Compare commits
| Author | SHA1 | Date | |
|---|---|---|---|
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275c7298ee |
No files matched your search
@@ -11,4 +11,4 @@ docs/html
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*/mmap_address.bin
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*/mmap_address.bin
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.history/*
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.history/*
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html
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html
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latex*.pre-*
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latex
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@@ -1,10 +1,13 @@
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#ifndef __Command_h__
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#ifndef __Command_h__
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#define __Command_h__
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#define __Command_h__
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#include "Object.h"
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#include "TCPSession.h"
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#include "TCPSession.h"
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#include "ZString.h"
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#include "ZString.h"
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#include "includes"
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namespace core {
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namespace core
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{
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class CommandList;
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class CommandList;
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@@ -17,10 +20,10 @@ namespace core {
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/// a list of functions that can be invoked as a result of processing a request.
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/// a list of functions that can be invoked as a result of processing a request.
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///
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///
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class Command {
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class Command
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{
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public:
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public:
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///
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///
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/// This method is used to implement the functionality of the requested command.
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/// This method is used to implement the functionality of the requested command.
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/// This pure virtual function must be implemented in your inheriting object.
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/// This pure virtual function must be implemented in your inheriting object.
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@@ -41,7 +44,6 @@ namespace core {
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///
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///
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virtual void output(std::stringstream &out);
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virtual void output(std::stringstream &out);
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};
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};
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}
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}
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@@ -1,30 +1,11 @@
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#include "CommandList.h"
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#include "CommandList.h"
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#include "Log.h"
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#include "Log.h"
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#include <algorithm>
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#include <cctype>
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namespace core {
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namespace core {
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CommandList::CommandList(std::string delimiter, int depth) : delimiter(delimiter), depth(depth) {}
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CommandList::CommandList(std::string delimiter, int depth) : delimiter(delimiter), depth(depth) {}
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void CommandList::add(Command &command, std::string name) {
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void CommandList::add(Command &command, std::string name) {
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// processRequest() below upper-cases the incoming keyword before
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// looking it up, but this previously stored whatever case the
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// caller passed in verbatim - any registration that wasn't
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// already uppercase (nearly everything outside SMTP/POP3/IMAP's
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// own RFC-driven uppercase convention) could then NEVER be
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// matched by any input, since upper-casing a non-uppercase string
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// can't produce a match against a non-uppercase key. Confirmed:
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// this alone made every Zephora game command unreachable, along
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// with this class's own base-level "publish"/"subscribe"/"event"/
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// etc. registrations (TCPServer's constructor). Folding the same
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// way here keeps registration and lookup permanently in sync
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// regardless of what case any given add() call happens to use -
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// already-uppercase callers (SMTP, the BARANTMail admin console)
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// are unaffected, since upper-casing an uppercase string is a
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// no-op.
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std::transform(name.begin(), name.end(), name.begin(),
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[](unsigned char c) { return std::toupper(c); });
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commands.insert(std::make_pair(name, &command));
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commands.insert(std::make_pair(name, &command));
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}
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}
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@@ -40,20 +21,7 @@ namespace core {
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request.split(delimiter, depth);
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request.split(delimiter, depth);
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request.reset();
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request.reset();
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try {
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try {
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// Every protocol built on this (SMTP, POP3, IMAP - RFC 5321
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auto command = commands.at(request[0].str());
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// 2.4, RFC 1939 3, RFC 3501 2.2.1) specifies that command
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// keywords are case-insensitive, but commands are always
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// registered here in uppercase and this was an exact-match
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// lookup - "mail from:" or "Mail From:" (both legal on the
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// wire, and not unusual from real clients) silently failed
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// to dispatch at all. Only the lookup key is case-folded;
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// the token instances handlers actually receive are
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// untouched, so any handler doing its own case-sensitive
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// parsing on arguments is unaffected.
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std::string key = request[0].str();
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std::transform(key.begin(), key.end(), key.begin(),
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[](unsigned char c) { return std::toupper(c); });
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auto command = commands.at(key);
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return command->processCommand(request, session);
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return command->processCommand(request, session);
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}
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}
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catch(...) {
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catch(...) {
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@@ -73,15 +41,8 @@ namespace core {
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}
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}
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int CommandList::processCommand(coreutils::ZString &request, TCPSession &session) {
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int CommandList::processCommand(coreutils::ZString &request, TCPSession &session) {
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// The intent was always "typing help lists the available
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// for(Command *command : commands)
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// commands" - this was left as a no-op stub (the commented-out
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// session.out << command->getName() << std::endl;
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// body even called a Command::getName() that was never added to
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// the base class) so every registered CommandList - including
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// the top-level one behind the "help" command itself - silently
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// did nothing. The map's own key IS the registered name (see
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// add()), so no getName() is needed at all - just walk it directly.
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for (auto &pair : commands)
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session.out << pair.first << std::string("\r\n");
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return true;
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return true;
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}
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}
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@@ -4,7 +4,6 @@
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#include "TCPSession.h"
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#include "TCPSession.h"
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#include "Command.h"
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#include "Command.h"
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#include "Log.h"
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#include "Log.h"
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#include <map>
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namespace core {
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namespace core {
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@@ -5,28 +5,17 @@
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namespace core {
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namespace core {
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ConsoleServer::ConsoleServer(EPoll &ePoll, IPAddress address, TLSInfo *tlsInfo,
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ConsoleServer::ConsoleServer(EPoll &ePoll, IPAddress address) : TCPServer(ePoll, address, " ", 10, "Console Server") {
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std::function<bool(std::string, std::string)> credentialChecker)
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: TCPServer(ePoll, address, tlsInfo, " ", 10, "Console Server"), credentialChecker(credentialChecker) {
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coreutils::Log(this);
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coreutils::Log(this);
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}
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}
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void ConsoleServer::logSend(std::string out) {
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void ConsoleServer::logSend(std::string out) {
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// Was unlocked entirely (and iterated raw pointers before
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for(auto *session : sessions)
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// TCPServer::sessions became shared_ptr-owned - see its own doc
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((ConsoleSession *)session)->writeLog(out);
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// comment) despite connectionRequest()/removeFromSessionList()
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// both mutating this same vector under `lock` from other threads.
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std::lock_guard guard(lock);
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for(auto &session : sessions)
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((ConsoleSession *)session.get())->writeLog(out);
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}
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}
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TCPSession * ConsoleServer::getSocketAccept(EPoll &ePoll) {
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TCPSession * ConsoleServer::getSocketAccept(EPoll &ePoll) {
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return new ConsoleSession(ePoll, this);
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return new ConsoleSession(ePoll, *this);
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}
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bool ConsoleServer::checkCredentials(std::string user, std::string password) {
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return credentialChecker ? credentialChecker(user, password) : true;
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}
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}
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}
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}
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@@ -1,13 +1,11 @@
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#ifndef __ConsoleServer_h__
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#ifndef __ConsoleServer_h__
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#define __ConsoleServer_h__
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#define __ConsoleServer_h__
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# include "TCPServer.h"
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#include "includes"
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#include "TLSServer.h"
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#include "Command.h"
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#include "Command.h"
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#include "EPoll.h"
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#include "EPoll.h"
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#include "LogListener.h"
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#include "LogListener.h"
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# include "TLSInfo.h"
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# include <functional>
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# include <string>
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namespace core {
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namespace core {
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@@ -23,16 +21,10 @@ namespace core {
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public:
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public:
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//
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//
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// credentialChecker, when provided, is consulted by
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//
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// ConsoleSession's login flow (see its own doc comment) instead
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// of the previous unconditional accept-anything behavior. Left
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// defaulting to nullptr so any other, unrelated use of
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// ConsoleServer that never cared about authentication is
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// unaffected.
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//
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//
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ConsoleServer(EPoll &ePoll, IPAddress address, TLSInfo *tlsInfo,
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ConsoleServer(EPoll &ePoll, IPAddress address);
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std::function<bool(std::string, std::string)> credentialChecker = nullptr);
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//
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//
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//
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//
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@@ -42,11 +34,6 @@ namespace core {
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TCPSession * getSocketAccept(EPoll &ePoll) override;
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TCPSession * getSocketAccept(EPoll &ePoll) override;
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bool checkCredentials(std::string user, std::string password);
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private:
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std::function<bool(std::string, std::string)> credentialChecker;
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|
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};
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};
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}
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}
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@@ -1,11 +1,10 @@
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#include "ConsoleSession.h"
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#include "ConsoleSession.h"
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#include "ConsoleServer.h"
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#include "TCPServer.h"
|
#include "TCPServer.h"
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#include "Log.h"
|
#include "Log.h"
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|
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namespace core {
|
namespace core {
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|
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ConsoleSession::ConsoleSession(EPoll &ePoll, TCPServer *server) : TerminalSession(ePoll, server) {}
|
ConsoleSession::ConsoleSession(EPoll &ePoll, TCPServer &server) : TerminalSession(ePoll, server) {}
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|
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ConsoleSession::~ConsoleSession() {}
|
ConsoleSession::~ConsoleSession() {}
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@@ -28,10 +27,6 @@ namespace core {
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break;
|
break;
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|
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case WAIT_USER_PROFILE:
|
case WAIT_USER_PROFILE:
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// Previously discarded entirely - nothing captured what was
|
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// actually typed here, so a real credential check further
|
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// down could never have anything to compare against.
|
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enteredUser = data.str();
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status = PASSWORD;
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status = PASSWORD;
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protocol(blank);
|
protocol(blank);
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break;
|
break;
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@@ -42,21 +37,8 @@ namespace core {
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break;
|
break;
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|
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case WAIT_PASSWORD:
|
case WAIT_PASSWORD:
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// The actual check: previously this state unconditionally
|
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// advanced to PROMPT regardless of what (if anything) was
|
|
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// entered at either step - any username/password, including
|
|
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// blank, reached the command prompt. checkCredentials()
|
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// returns true unconditionally when the owning ConsoleServer
|
|
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// was built without a credentialChecker, preserving that
|
|
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// exact behavior for any other use of this class.
|
|
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if (((ConsoleServer *)server)->checkCredentials(enteredUser, data.str())) {
|
|
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status = PROMPT;
|
status = PROMPT;
|
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protocol(blank);
|
protocol(blank);
|
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} else {
|
|
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out << "Login failed." << "\r\n";
|
|
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status = DONE;
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|
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protocol(blank);
|
|
||||||
}
|
|
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break;
|
break;
|
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|
|
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case PROMPT:
|
case PROMPT:
|
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@@ -86,11 +68,6 @@ namespace core {
|
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}
|
}
|
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}
|
}
|
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|
|
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void ConsoleSession::onConnected() {
|
|
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coreutils::ZString blank("");
|
|
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protocol(blank);
|
|
||||||
}
|
|
||||||
|
|
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void ConsoleSession::writeLog(std::string data) {
|
void ConsoleSession::writeLog(std::string data) {
|
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// saveCursor();
|
// saveCursor();
|
||||||
// setCursorLocation(16, 1);
|
// setCursorLocation(16, 1);
|
||||||
@@ -98,7 +75,7 @@ namespace core {
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|||||||
}
|
}
|
||||||
|
|
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void ConsoleSession::doCommand(coreutils::ZString &request) {
|
void ConsoleSession::doCommand(coreutils::ZString &request) {
|
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server->commands.processRequest(request, *this);
|
server.commands.processRequest(request, *this);
|
||||||
}
|
}
|
||||||
|
|
||||||
}
|
}
|
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@@ -16,19 +16,11 @@ namespace core {
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|||||||
/// Extend the protocol() method in order to define the behavior and
|
/// Extend the protocol() method in order to define the behavior and
|
||||||
/// protocol interaction for this socket which is a console session.
|
/// protocol interaction for this socket which is a console session.
|
||||||
///
|
///
|
||||||
/// The User:/Password: exchange is a real login when the owning
|
|
||||||
/// ConsoleServer was constructed with a credentialChecker (see its
|
|
||||||
/// own doc comment) - previously the entered username was never
|
|
||||||
/// even stored and the password was never compared against
|
|
||||||
/// anything, so any input (including blank) reached the command
|
|
||||||
/// prompt. A ConsoleServer built without a credentialChecker still
|
|
||||||
/// accepts anything, matching that original behavior exactly.
|
|
||||||
///
|
|
||||||
|
|
||||||
class ConsoleSession : public TerminalSession {
|
class ConsoleSession : public TerminalSession {
|
||||||
|
|
||||||
public:
|
public:
|
||||||
ConsoleSession(EPoll &ePoll, TCPServer *server);
|
ConsoleSession(EPoll &ePoll, TCPServer &server);
|
||||||
~ConsoleSession();
|
~ConsoleSession();
|
||||||
|
|
||||||
void writeLog(std::string data);
|
void writeLog(std::string data);
|
||||||
@@ -36,27 +28,11 @@ namespace core {
|
|||||||
protected:
|
protected:
|
||||||
void protocol(coreutils::ZString &data) override;
|
void protocol(coreutils::ZString &data) override;
|
||||||
|
|
||||||
// Previously absent entirely, so the state machine only ever
|
|
||||||
// advanced on the CLIENT's first line of input - that line was
|
|
||||||
// consumed just to drive WELCOME->LOGIN and was never used as
|
|
||||||
// real content, meaning every subsequent line was shifted one
|
|
||||||
// slot early (what the user typed as their *username* actually
|
|
||||||
// got compared as nothing, their *password* got captured as
|
|
||||||
// enteredUser, and their first real command got compared as the
|
|
||||||
// password). Harmless before real credential checking existed -
|
|
||||||
// any input reached the prompt regardless - but it broke login
|
|
||||||
// outright once checkCredentials() started actually comparing
|
|
||||||
// values. Kicking the state machine off here instead means
|
|
||||||
// "User: " is sent immediately on connect, before the client
|
|
||||||
// has sent anything at all.
|
|
||||||
void onConnected() override;
|
|
||||||
|
|
||||||
private:
|
private:
|
||||||
enum Status {WELCOME, LOGIN, WAIT_USER_PROFILE, PASSWORD, WAIT_PASSWORD, PROMPT, INPUT, PROCESS, DONE};
|
enum Status {WELCOME, LOGIN, WAIT_USER_PROFILE, PASSWORD, WAIT_PASSWORD, PROMPT, INPUT, PROCESS, DONE};
|
||||||
Status status = WELCOME;
|
Status status = WELCOME;
|
||||||
void doCommand(coreutils::ZString &request);
|
void doCommand(coreutils::ZString &request);
|
||||||
coreutils::ZString command;
|
coreutils::ZString command;
|
||||||
std::string enteredUser;
|
|
||||||
|
|
||||||
};
|
};
|
||||||
|
|
||||||
|
|||||||
@@ -3,7 +3,6 @@
|
|||||||
#include "Command.h"
|
#include "Command.h"
|
||||||
#include "Exception.h"
|
#include "Exception.h"
|
||||||
#include <signal.h>
|
#include <signal.h>
|
||||||
#include <sys/epoll.h>
|
|
||||||
|
|
||||||
namespace core {
|
namespace core {
|
||||||
|
|
||||||
@@ -14,27 +13,11 @@ namespace core {
|
|||||||
maxSockets = 1000;
|
maxSockets = 1000;
|
||||||
epfd = epoll_create1(0);
|
epfd = epoll_create1(0);
|
||||||
terminateThreads = false;
|
terminateThreads = false;
|
||||||
started = false;
|
|
||||||
}
|
}
|
||||||
|
|
||||||
// Was empty - if this EPoll's worker pool was started but stop() was
|
EPoll::~EPoll() {}
|
||||||
// never explicitly called (e.g. an exception unwinding the stack
|
|
||||||
// during startup, before the caller's own normal shutdown path could
|
|
||||||
// run), the pool just kept running against this object's - and every
|
|
||||||
// Socket registered with it's - soon-to-be-freed memory. stop() itself
|
|
||||||
// is what actually joins every worker thread before anything gets
|
|
||||||
// torn down; see Thread::~Thread()'s doc comment for the crash this
|
|
||||||
// was confirmed to cause. Guarded by `started` so a never-started
|
|
||||||
// EPoll (numberOfThreads/threads still default) doesn't call stop()
|
|
||||||
// over a garbage thread count, and by `!terminateThreads` so an
|
|
||||||
// EPoll that already went through a normal stop() doesn't do it
|
|
||||||
// (and close an already-closed epfd) twice.
|
|
||||||
EPoll::~EPoll() {
|
|
||||||
if (started && !terminateThreads)
|
|
||||||
stop();
|
|
||||||
}
|
|
||||||
|
|
||||||
bool EPoll::start(int numberOfThreads, int maxSockets, ThreadScope *scope) {
|
bool EPoll::start(int numberOfThreads, int maxSockets) {
|
||||||
|
|
||||||
coreutils::Log(coreutils::LOG_DEBUG_2) << "Starting epoll event processing.";
|
coreutils::Log(coreutils::LOG_DEBUG_2) << "Starting epoll event processing.";
|
||||||
|
|
||||||
@@ -48,20 +31,15 @@ namespace core {
|
|||||||
//----------------------------------------------------------------------
|
//----------------------------------------------------------------------
|
||||||
// Create thread objects into vector for number of threads requested.
|
// Create thread objects into vector for number of threads requested.
|
||||||
// Hand all the threads a pointer to the EPoll object so they can run
|
// Hand all the threads a pointer to the EPoll object so they can run
|
||||||
// the socket handlers - and, if given, the same shared ThreadScope
|
// the socket handlers.
|
||||||
// so each one runs its onThreadStart()/onThreadEnd() hooks (see
|
|
||||||
// ThreadScope's own doc comment for why - e.g. MySQL client library
|
|
||||||
// per-thread init).
|
|
||||||
//----------------------------------------------------------------------
|
//----------------------------------------------------------------------
|
||||||
|
|
||||||
for(int ix = 0; ix < numberOfThreads; ++ix)
|
for(int ix = 0; ix < numberOfThreads; ++ix)
|
||||||
threads.emplace_back(*this, scope);
|
threads.emplace_back(*this);
|
||||||
|
|
||||||
for(int ix = 0; ix < numberOfThreads; ++ix)
|
for(int ix = 0; ix < numberOfThreads; ++ix)
|
||||||
threads[ix].start();
|
threads[ix].start();
|
||||||
|
|
||||||
started = true;
|
|
||||||
|
|
||||||
return true;
|
return true;
|
||||||
}
|
}
|
||||||
|
|
||||||
@@ -95,16 +73,7 @@ namespace core {
|
|||||||
|
|
||||||
int EPoll::processCommand(coreutils::ZString &request, TCPSession &session) {
|
int EPoll::processCommand(coreutils::ZString &request, TCPSession &session) {
|
||||||
int sequence = 0;
|
int sequence = 0;
|
||||||
// Was `for(auto threadx : threads)` - copied each live, running
|
for(auto threadx : threads) {
|
||||||
// Thread by value. Harmless while ~Thread() was empty, but now
|
|
||||||
// that it actually joins and deletes the underlying std::thread*
|
|
||||||
// (see its own doc comment), a copy going out of scope at the end
|
|
||||||
// of each iteration would join and free the SAME thread the real
|
|
||||||
// vector entry still owns and expects to keep running - a
|
|
||||||
// double-free the next time anything lists threads on a live
|
|
||||||
// server (this method is reachable via the console's own command
|
|
||||||
// dispatch).
|
|
||||||
for(auto &threadx : threads) {
|
|
||||||
session.out << "|" << ++sequence;
|
session.out << "|" << ++sequence;
|
||||||
threadx.output(session.out);
|
threadx.output(session.out);
|
||||||
session.out << "|" << std::endl;
|
session.out << "|" << std::endl;
|
||||||
|
|||||||
@@ -51,13 +51,9 @@ namespace core {
|
|||||||
///
|
///
|
||||||
/// @param numberOfThreads the number of threads to start for processing epoll entries.
|
/// @param numberOfThreads the number of threads to start for processing epoll entries.
|
||||||
/// @param maxSockets the maximum number of open sockets that epoll will manage.
|
/// @param maxSockets the maximum number of open sockets that epoll will manage.
|
||||||
/// @param scope optional - if given, its onThreadStart()/onThreadEnd() run once on
|
|
||||||
/// each worker thread, at the top/bottom of that thread's own lifetime. The SAME
|
|
||||||
/// scope instance is shared across every worker thread - see ThreadScope's own
|
|
||||||
/// doc comment. Not owned by EPoll; caller keeps it alive for the server's lifetime.
|
|
||||||
///
|
///
|
||||||
|
|
||||||
bool start(int numberOfThreads, int maxSockets, ThreadScope *scope = NULL); ///< Start the BMAEPoll processing.
|
bool start(int numberOfThreads, int maxSockets); ///< Start the BMAEPoll processing.
|
||||||
|
|
||||||
///
|
///
|
||||||
/// Use the stop() method to initiate the shutdown process for the epoll socket management.
|
/// Use the stop() method to initiate the shutdown process for the epoll socket management.
|
||||||
@@ -107,12 +103,6 @@ namespace core {
|
|||||||
int numberOfThreads;
|
int numberOfThreads;
|
||||||
std::vector<Thread> threads;
|
std::vector<Thread> threads;
|
||||||
volatile bool terminateThreads;
|
volatile bool terminateThreads;
|
||||||
// Guards ~EPoll()'s own call to stop() - false until start()
|
|
||||||
// actually runs, so a never-started EPoll (numberOfThreads and
|
|
||||||
// threads both still default/empty) doesn't have its destructor
|
|
||||||
// iterate a garbage thread count. See ~EPoll()'s own doc comment
|
|
||||||
// in EPoll.cpp for what this is actually protecting against.
|
|
||||||
bool started;
|
|
||||||
|
|
||||||
};
|
};
|
||||||
|
|
||||||
|
|||||||
@@ -1,22 +1,15 @@
|
|||||||
#include "INotify.h"
|
#include "INotify.h"
|
||||||
#include "Log.h"
|
#include "Log.h"
|
||||||
#include "ZString.h"
|
#include "ZString.h"
|
||||||
#include <sys/inotify.h>
|
|
||||||
|
|
||||||
namespace core {
|
namespace core {
|
||||||
|
|
||||||
INotify::INotify(EPoll &ePoll) : Socket(ePoll, "INotify") {
|
INotify::INotify(EPoll &ePoll) : Socket(ePoll, "INotify") {
|
||||||
setDescriptor(inotify_init());
|
setDescriptor(inotify_init());
|
||||||
// See isKnownINotify()'s own doc comment - registers this object
|
|
||||||
// as safe for Thread::run() to dispatch epoll events to directly.
|
|
||||||
std::lock_guard<std::mutex> guard(knownINotifiesMutex());
|
|
||||||
knownINotifies().insert(this);
|
|
||||||
}
|
}
|
||||||
|
|
||||||
INotify::~INotify() {
|
INotify::~INotify() {
|
||||||
shutdown();
|
shutdown();
|
||||||
std::lock_guard<std::mutex> guard(knownINotifiesMutex());
|
|
||||||
knownINotifies().erase(this);
|
|
||||||
}
|
}
|
||||||
|
|
||||||
int INotify::addWatch(coreutils::ZString &watch) {
|
int INotify::addWatch(coreutils::ZString &watch) {
|
||||||
@@ -34,53 +27,32 @@ namespace core {
|
|||||||
ptr < buffer.getData() + buffer.getLength();
|
ptr < buffer.getData() + buffer.getLength();
|
||||||
ptr += sizeof(struct inotify_event) + event->len) {
|
ptr += sizeof(struct inotify_event) + event->len) {
|
||||||
event = (const struct inotify_event *) ptr;
|
event = (const struct inotify_event *) ptr;
|
||||||
|
coreutils::ZString name(event->name);
|
||||||
// event->name only exists - and is only NUL-terminated - when
|
|
||||||
// event->len > 0 (inotify(7): "This field is present only when
|
|
||||||
// the event relates to a file inside a watched directory ...
|
|
||||||
// otherwise ... this field is absent."). For events with
|
|
||||||
// len == 0 (e.g. IN_UNMOUNT, IN_Q_OVERFLOW, IN_IGNORED, or
|
|
||||||
// self-watch events), event->name is not a valid C-string at
|
|
||||||
// all - calling strlen() on it (as the old ZString(const char*)
|
|
||||||
// one-arg constructor did unconditionally here) reads past
|
|
||||||
// whatever garbage follows in the socket's 4096-byte receive
|
|
||||||
// buffer looking for a NUL, a real heap-buffer-overflow read
|
|
||||||
// confirmed via AddressSanitizer under concurrent load (the
|
|
||||||
// eventual heap corruption this caused was previously
|
|
||||||
// misdiagnosed as a MySQL client thread-safety issue, since it
|
|
||||||
// surfaces on whichever EPoll worker thread happens to service
|
|
||||||
// this watcher's socket and corrupts unrelated heap state).
|
|
||||||
// strnlen() bounded by event->len (rather than the one-arg
|
|
||||||
// ZString ctor's unbounded strlen) matches the kernel's actual
|
|
||||||
// guarantee: name is NUL-padded to exactly event->len bytes.
|
|
||||||
coreutils::ZString name = event->len > 0
|
|
||||||
? coreutils::ZString(event->name, strnlen(event->name, event->len))
|
|
||||||
: coreutils::ZString("");
|
|
||||||
|
|
||||||
if(event->mask & IN_ACCESS)
|
if(event->mask & IN_ACCESS)
|
||||||
inAccess(name);
|
inAccess(name);
|
||||||
if(event->mask & IN_ATTRIB)
|
if(event->mask & IN_ATTRIB)
|
||||||
inAttrib(name.str());
|
inAttrib(std::string(event->name));
|
||||||
if(event->mask & IN_CLOSE_WRITE)
|
if(event->mask & IN_CLOSE_WRITE)
|
||||||
inCloseWrite(name.str());
|
inCloseWrite(std::string(event->name));
|
||||||
if(event->mask & IN_CLOSE_NOWRITE)
|
if(event->mask & IN_CLOSE_NOWRITE)
|
||||||
inCloseNoWrite(name.str());
|
inCloseNoWrite(std::string(event->name));
|
||||||
if(event->mask & IN_CREATE)
|
if(event->mask & IN_CREATE)
|
||||||
inCreate(name);
|
inCreate(name);
|
||||||
if(event->mask & IN_DELETE)
|
if(event->mask & IN_DELETE)
|
||||||
inDelete(name.str());
|
inDelete(std::string(event->name));
|
||||||
if(event->mask & IN_DELETE_SELF)
|
if(event->mask & IN_DELETE_SELF)
|
||||||
inDeleteSelf(name.str());
|
inDeleteSelf(std::string(event->name));
|
||||||
if(event->mask & IN_MODIFY)
|
if(event->mask & IN_MODIFY)
|
||||||
inModify(name.str());
|
inModify(std::string(event->name));
|
||||||
if(event->mask & IN_MOVE_SELF)
|
if(event->mask & IN_MOVE_SELF)
|
||||||
inMoveSelf(name.str());
|
inMoveSelf(std::string(event->name));
|
||||||
if(event->mask & IN_MOVED_FROM)
|
if(event->mask & IN_MOVED_FROM)
|
||||||
inMovedFrom(name.str());
|
inMovedFrom(std::string(event->name));
|
||||||
if(event->mask & IN_MOVED_TO)
|
if(event->mask & IN_MOVED_TO)
|
||||||
inMovedTo(name.str());
|
inMovedTo(std::string(event->name));
|
||||||
if(event->mask & IN_OPEN)
|
if(event->mask & IN_OPEN)
|
||||||
inOpen(name.str());
|
inOpen(std::string(event->name));
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|||||||
@@ -1,9 +1,8 @@
|
|||||||
#ifndef __INotify_h__
|
#ifndef __INotify_h__
|
||||||
# define __INotify_h__
|
# define __INotify_h__
|
||||||
|
|
||||||
|
#include "includes"
|
||||||
#include "Socket.h"
|
#include "Socket.h"
|
||||||
#include <set>
|
|
||||||
#include <mutex>
|
|
||||||
|
|
||||||
namespace core {
|
namespace core {
|
||||||
|
|
||||||
@@ -31,41 +30,6 @@ namespace core {
|
|||||||
virtual void inMovedTo(std::string name) {}
|
virtual void inMovedTo(std::string name) {}
|
||||||
virtual void inOpen(std::string name) {}
|
virtual void inOpen(std::string name) {}
|
||||||
|
|
||||||
/// core::INotify is a long-lived Socket subclass that is neither
|
|
||||||
/// a TCPSession (shared_ptr/pin()-owned) nor a listening
|
|
||||||
/// TCPServer - it is normally embedded as a base subobject of a
|
|
||||||
/// server object constructed once in main() and living for the
|
|
||||||
/// whole process (e.g. mail::SMTPServer's queue-directory watch).
|
|
||||||
/// Thread::run()'s epoll dispatch only ever recognized those two
|
|
||||||
/// categories of raw pointer as safe to call directly (see
|
|
||||||
/// TCPServer::isKnownListeningSocket()'s own doc comment) -
|
|
||||||
/// anything else fell through to the "stale/unrecognized epoll
|
|
||||||
/// event" branch and was silently dropped forever. Confirmed
|
|
||||||
/// live: a real IN_CREATE event on a mail queue directory logged
|
|
||||||
/// exactly that "Ignoring stale/unrecognized epoll event" line
|
|
||||||
/// and the newly queued message was never delivered - it just sat
|
|
||||||
/// in the queue until the next process restart, whose
|
|
||||||
/// processExisting() directory scan (a plain synchronous loop,
|
|
||||||
/// entirely independent of epoll) happened to flush the backlog
|
|
||||||
/// and made the bug look intermittent. Registering the instance here,
|
|
||||||
/// mirroring listeningSockets() exactly, gives Thread::run() the
|
|
||||||
/// same kind of safe "yes, dispatch to this raw pointer directly"
|
|
||||||
/// signal for INotify objects too.
|
|
||||||
static bool isKnownINotify(void *ptr) {
|
|
||||||
std::lock_guard<std::mutex> guard(knownINotifiesMutex());
|
|
||||||
return knownINotifies().count(ptr) > 0;
|
|
||||||
}
|
|
||||||
|
|
||||||
private:
|
|
||||||
static std::mutex &knownINotifiesMutex() {
|
|
||||||
static std::mutex m;
|
|
||||||
return m;
|
|
||||||
}
|
|
||||||
static std::set<void *> &knownINotifies() {
|
|
||||||
static std::set<void *> s;
|
|
||||||
return s;
|
|
||||||
}
|
|
||||||
|
|
||||||
};
|
};
|
||||||
|
|
||||||
}
|
}
|
||||||
|
|||||||
@@ -1,10 +1,4 @@
|
|||||||
#include "IPAddress.h"
|
#include "IPAddress.h"
|
||||||
#include <cstring>
|
|
||||||
#include <sstream>
|
|
||||||
#include <netdb.h>
|
|
||||||
#include <sys/socket.h>
|
|
||||||
#include <netinet/in.h>
|
|
||||||
#include <arpa/inet.h>
|
|
||||||
|
|
||||||
namespace core {
|
namespace core {
|
||||||
|
|
||||||
|
|||||||
@@ -1,13 +1,12 @@
|
|||||||
#ifndef __IPAddress_h__
|
#ifndef __IPAddress_h__
|
||||||
#define __IPAddress_h__
|
#define __IPAddress_h__
|
||||||
|
|
||||||
#include <sys/socket.h>
|
#include "includes"
|
||||||
#include <netinet/in.h>
|
#include "Object.h"
|
||||||
#include <string>
|
|
||||||
|
|
||||||
namespace core {
|
namespace core {
|
||||||
|
|
||||||
class IPAddress {
|
class IPAddress : public Object {
|
||||||
|
|
||||||
public:
|
public:
|
||||||
IPAddress();
|
IPAddress();
|
||||||
|
|||||||
@@ -1,9 +1,8 @@
|
|||||||
#ifndef __IPAddressList_h__
|
#ifndef __IPAddressList_h__
|
||||||
#define __IPAddressList_h__
|
#define __IPAddressList_h__
|
||||||
|
|
||||||
|
#include "includes"
|
||||||
#include "IPAddress.h"
|
#include "IPAddress.h"
|
||||||
#include <map>
|
|
||||||
#include <string>
|
|
||||||
|
|
||||||
namespace core {
|
namespace core {
|
||||||
|
|
||||||
|
|||||||
@@ -0,0 +1,91 @@
|
|||||||
|
#
|
||||||
|
# 'make' build executable file 'main'
|
||||||
|
# 'make clean' removes all .o and executable files
|
||||||
|
#
|
||||||
|
|
||||||
|
# define the Cpp compiler to use
|
||||||
|
CXX = g++
|
||||||
|
|
||||||
|
# define any compile-time flags
|
||||||
|
CXXFLAGS := -std=c++17 -Wall -Wextra -g
|
||||||
|
|
||||||
|
# define library paths in addition to /usr/lib
|
||||||
|
# if I wanted to include libraries not in /usr/lib I'd specify
|
||||||
|
# their path using -Lpath, something like:
|
||||||
|
LFLAGS =
|
||||||
|
|
||||||
|
# define output directory
|
||||||
|
OUTPUT := output
|
||||||
|
|
||||||
|
# define source directory
|
||||||
|
SRC := src
|
||||||
|
|
||||||
|
# define include directory
|
||||||
|
INCLUDE := include
|
||||||
|
|
||||||
|
# define lib directory
|
||||||
|
LIB := lib
|
||||||
|
|
||||||
|
ifeq ($(OS),Windows_NT)
|
||||||
|
MAIN := main.exe
|
||||||
|
SOURCEDIRS := $(SRC)
|
||||||
|
INCLUDEDIRS := $(INCLUDE)
|
||||||
|
LIBDIRS := $(LIB)
|
||||||
|
FIXPATH = $(subst /,\,$1)
|
||||||
|
RM := del /q /f
|
||||||
|
MD := mkdir
|
||||||
|
else
|
||||||
|
MAIN := main
|
||||||
|
SOURCEDIRS := $(shell find $(SRC) -type d)
|
||||||
|
INCLUDEDIRS := $(shell find $(INCLUDE) -type d)
|
||||||
|
LIBDIRS := $(shell find $(LIB) -type d)
|
||||||
|
FIXPATH = $1
|
||||||
|
RM = rm -f
|
||||||
|
MD := mkdir -p
|
||||||
|
endif
|
||||||
|
|
||||||
|
# define any directories containing header files other than /usr/include
|
||||||
|
INCLUDES := $(patsubst %,-I%, $(INCLUDEDIRS:%/=%))
|
||||||
|
|
||||||
|
# define the C libs
|
||||||
|
LIBS := $(patsubst %,-L%, $(LIBDIRS:%/=%))
|
||||||
|
|
||||||
|
# define the C source files
|
||||||
|
SOURCES := $(wildcard $(patsubst %,%/*.cpp, $(SOURCEDIRS)))
|
||||||
|
|
||||||
|
# define the C object files
|
||||||
|
OBJECTS := $(SOURCES:.cpp=.o)
|
||||||
|
|
||||||
|
#
|
||||||
|
# The following part of the makefile is generic; it can be used to
|
||||||
|
# build any executable just by changing the definitions above and by
|
||||||
|
# deleting dependencies appended to the file from 'make depend'
|
||||||
|
#
|
||||||
|
|
||||||
|
OUTPUTMAIN := $(call FIXPATH,$(OUTPUT)/$(MAIN))
|
||||||
|
|
||||||
|
all: $(OUTPUT) $(MAIN)
|
||||||
|
@echo Executing 'all' complete!
|
||||||
|
|
||||||
|
$(OUTPUT):
|
||||||
|
$(MD) $(OUTPUT)
|
||||||
|
|
||||||
|
$(MAIN): $(OBJECTS)
|
||||||
|
$(CXX) $(CXXFLAGS) $(INCLUDES) -o $(OUTPUTMAIN) $(OBJECTS) $(LFLAGS) $(LIBS)
|
||||||
|
|
||||||
|
# this is a suffix replacement rule for building .o's from .c's
|
||||||
|
# it uses automatic variables $<: the name of the prerequisite of
|
||||||
|
# the rule(a .c file) and $@: the name of the target of the rule (a .o file)
|
||||||
|
# (see the gnu make manual section about automatic variables)
|
||||||
|
.cpp.o:
|
||||||
|
$(CXX) $(CXXFLAGS) $(INCLUDES) -c $< -o $@
|
||||||
|
|
||||||
|
.PHONY: clean
|
||||||
|
clean:
|
||||||
|
$(RM) $(OUTPUTMAIN)
|
||||||
|
$(RM) $(call FIXPATH,$(OBJECTS))
|
||||||
|
@echo Cleanup complete!
|
||||||
|
|
||||||
|
run: all
|
||||||
|
./$(OUTPUTMAIN)
|
||||||
|
@echo Executing 'run: all' complete!
|
||||||
@@ -0,0 +1,19 @@
|
|||||||
|
#ifndef __Object_h__
|
||||||
|
#define __Object_h__
|
||||||
|
|
||||||
|
#include "includes"
|
||||||
|
|
||||||
|
namespace core {
|
||||||
|
|
||||||
|
class Object {
|
||||||
|
|
||||||
|
public:
|
||||||
|
|
||||||
|
std::string name;
|
||||||
|
std::string tag;
|
||||||
|
|
||||||
|
};
|
||||||
|
|
||||||
|
}
|
||||||
|
|
||||||
|
#endif
|
||||||
@@ -1,14 +1,20 @@
|
|||||||
#ifndef __SessionFilter_h__
|
#ifndef __SessionFilter_h__
|
||||||
#define __SessionFilter_h__
|
#define __SessionFilter_h__
|
||||||
|
|
||||||
namespace core {
|
//#include "Session.h"
|
||||||
|
#include "Object.h"
|
||||||
|
|
||||||
|
namespace core
|
||||||
|
{
|
||||||
|
|
||||||
class TCPSession;
|
class TCPSession;
|
||||||
|
|
||||||
class SessionFilter {
|
class SessionFilter : public Object
|
||||||
|
{
|
||||||
|
|
||||||
public:
|
public:
|
||||||
virtual bool test(TCPSession &session) {
|
virtual bool test(TCPSession &session)
|
||||||
|
{
|
||||||
return true;
|
return true;
|
||||||
}
|
}
|
||||||
};
|
};
|
||||||
|
|||||||
@@ -3,7 +3,6 @@
|
|||||||
#include "Exception.h"
|
#include "Exception.h"
|
||||||
#include "Log.h"
|
#include "Log.h"
|
||||||
#include "ZString.h"
|
#include "ZString.h"
|
||||||
#include <iostream>
|
|
||||||
|
|
||||||
namespace core
|
namespace core
|
||||||
{
|
{
|
||||||
@@ -49,17 +48,6 @@ namespace core
|
|||||||
return descriptor;
|
return descriptor;
|
||||||
}
|
}
|
||||||
|
|
||||||
void Socket::setBufferSize(int length)
|
|
||||||
{
|
|
||||||
this->length = length;
|
|
||||||
buffer = (char *)realloc(buffer, length);
|
|
||||||
}
|
|
||||||
|
|
||||||
int Socket::getBufferSize()
|
|
||||||
{
|
|
||||||
return length;
|
|
||||||
}
|
|
||||||
|
|
||||||
void Socket::onRegister() {}
|
void Socket::onRegister() {}
|
||||||
|
|
||||||
void Socket::onRegistered() {}
|
void Socket::onRegistered() {}
|
||||||
@@ -69,142 +57,36 @@ namespace core
|
|||||||
void Socket::onUnregistered() {}
|
void Socket::onUnregistered() {}
|
||||||
|
|
||||||
bool Socket::eventReceived(struct epoll_event event, long long eventId) {
|
bool Socket::eventReceived(struct epoll_event event, long long eventId) {
|
||||||
coreutils::Log(coreutils::LOG_DEBUG_1) << "Event process beginning for socket " << getDescriptor();
|
// coreutils::Log(coreutils::LOG_DEBUG_1) << "Event process beginning for socket " << getDescriptor();
|
||||||
if(inHandler)
|
if(inHandler)
|
||||||
coreutils::Log(coreutils::LOG_DEBUG_2) << "inHandler was already true.";
|
// coreutils::Log(coreutils::LOG_DEBUG_2) << "inHandler was already true.";
|
||||||
inHandler = true;
|
inHandler = true;
|
||||||
if(event.events & EPOLLRDHUP) {
|
if(event.events & EPOLLRDHUP) {
|
||||||
coreutils::Log(coreutils::LOG_DEBUG_2) << "EPOLLRDHUP";
|
// coreutils::Log(coreutils::LOG_DEBUG_2) << "EPOLLRDHUP";
|
||||||
readHangup = true;
|
readHangup = true;
|
||||||
shutdown("hangup received");
|
shutdown("hangup received");
|
||||||
}
|
}
|
||||||
if(event.events & EPOLLIN) {
|
if(event.events & EPOLLIN) {
|
||||||
coreutils::Log(coreutils::LOG_DEBUG_2) << "EPOLLIN";
|
// coreutils::Log(coreutils::LOG_DEBUG_2) << "EPOLLIN";
|
||||||
// A read just happened (or at least an opportunity for OpenSSL
|
lock.lock();
|
||||||
// to make progress on whatever it needed a read for) - give any
|
receiveDataNotification();
|
||||||
// write that was waiting on that a fresh attempt via this same
|
if(!shutDown) {
|
||||||
// call's own trailing resetSocket(), rather than leaving
|
inHandler = false;
|
||||||
// EPOLLWRNORM permanently un-armed from a single earlier stall.
|
lock.unlock();
|
||||||
waitingOnReadToWrite = false;
|
resetSocket();
|
||||||
coreutils::ZString zbuffer(buffer, length);
|
|
||||||
// receiveData() calls all the way down through
|
|
||||||
// onDataReceived()/HTTPRequest::doParse()/application request
|
|
||||||
// handling with NO exception protection anywhere in that chain -
|
|
||||||
// confirmed live: a single thrown coreutils::Exception (e.g. a
|
|
||||||
// malformed request hitting a parse-time throw, well before
|
|
||||||
// ApiSession::handleComplete()'s own try/catch around
|
|
||||||
// match.render() ever runs) reached std::terminate() and killed
|
|
||||||
// the entire server process, not just this one connection, since
|
|
||||||
// this runs on an EPoll worker thread and C++ terminates the
|
|
||||||
// whole program on an exception escaping a thread. The old
|
|
||||||
// lock.lock()/lock.unlock() pair (no RAII) also leaked the lock
|
|
||||||
// permanently on this same path - std::lock_guard fixes that as
|
|
||||||
// a side effect of adding the try/catch here.
|
|
||||||
try {
|
|
||||||
std::lock_guard<std::mutex> guard(lock);
|
|
||||||
receiveData(zbuffer);
|
|
||||||
} catch(coreutils::Exception &e) {
|
|
||||||
// Also to stderr, not just Log() - this process's Log class
|
|
||||||
// writes through a static listener/file neither this server
|
|
||||||
// nor its main() ever configures (its own startup banner
|
|
||||||
// uses plain std::cout, not Log at all), so a Log()-only
|
|
||||||
// message here would be silently dropped. stderr reliably
|
|
||||||
// lands in the log file given how this process is started
|
|
||||||
// (both stdout and stderr redirected to the same file).
|
|
||||||
std::cerr << "Exception processing socket " << getDescriptor() << ": " << e.text << std::endl;
|
|
||||||
coreutils::Log(coreutils::LOG_EXCEPT) << "Exception processing socket " << getDescriptor() << ": " << e.text;
|
|
||||||
shutdown("exception during receiveData: " + e.text);
|
|
||||||
} catch(std::exception &e) {
|
|
||||||
std::cerr << "std::exception processing socket " << getDescriptor() << ": " << e.what() << std::endl;
|
|
||||||
coreutils::Log(coreutils::LOG_EXCEPT) << "std::exception processing socket " << getDescriptor() << ": " << e.what();
|
|
||||||
shutdown(std::string("exception during receiveData: ") + e.what());
|
|
||||||
} catch(...) {
|
|
||||||
std::cerr << "Unknown exception processing socket " << getDescriptor() << std::endl;
|
|
||||||
coreutils::Log(coreutils::LOG_EXCEPT) << "Unknown exception processing socket " << getDescriptor();
|
|
||||||
shutdown("unknown exception during receiveData");
|
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
if(event.events & EPOLLWRNORM) {
|
if(event.events & EPOLLWRNORM) {
|
||||||
coreutils::Log(coreutils::LOG_DEBUG_2) << "EPOLLWRNORM";
|
// coreutils::Log(coreutils::LOG_DEBUG_2) << "EPOLLWRNORM";
|
||||||
writeSocket();
|
writeSocket();
|
||||||
}
|
|
||||||
// A graceful shutdown() (session.terminate() -> "goodbye" reply
|
|
||||||
// queued via write(), then shutdown() called - see e.g. IMAP's
|
|
||||||
// LOGOUT/POP3's QUIT/SMTP's QUIT) used to make keepAlive false
|
|
||||||
// the moment shutDown was set, in this SAME event cycle that had
|
|
||||||
// just queued that reply - Thread::run() then deletes this object
|
|
||||||
// immediately on a false return, before the reply was ever
|
|
||||||
// written to the actual socket (write() only queues into fifo;
|
|
||||||
// the real send() happens in writeSocket(), only reachable via a
|
|
||||||
// LATER EPOLLWRNORM event this object never lived to receive).
|
|
||||||
// Confirmed live: LOGOUT/QUIT connections closed correctly but
|
|
||||||
// their own final reply line never reached the client. Staying
|
|
||||||
// alive while shutDown is set but fifo still has data - as long
|
|
||||||
// as the peer hasn't already hung up (readHangup - trying to
|
|
||||||
// drain to a peer that's already gone is pointless, not graceful)
|
|
||||||
// - gives that queued reply a real chance to go out before this
|
|
||||||
// socket actually closes.
|
|
||||||
bool keepAlive = preventSelfDelete || !shutDown || (fifo.size() > 0 && !readHangup);
|
|
||||||
|
|
||||||
// resetSocket() re-arms this fd via EPOLL_CTL_MOD, which makes it
|
|
||||||
// immediately eligible for delivery to ANY worker thread's
|
|
||||||
// epoll_wait() - including one already blocked and about to wake
|
|
||||||
// up right away. The old code called resetSocket() from inside
|
|
||||||
// the branches above while several more statements (an
|
|
||||||
// unconditional inHandler write, this Log call, and `return
|
|
||||||
// !shutDown`) still touched `this` afterward - a second thread
|
|
||||||
// could legitimately receive the re-armed event, finish handling
|
|
||||||
// it, and delete this object (Thread::run() does exactly that
|
|
||||||
// when eventReceived() returns false) before this thread's own
|
|
||||||
// remaining statements ran, a heap-use-after-free confirmed via
|
|
||||||
// AddressSanitizer under concurrent load. resetSocket() must be
|
|
||||||
// the last thing that ever touches `this`, with the return value
|
|
||||||
// already captured in a local (`keepAlive`) beforehand.
|
|
||||||
coreutils::Log(coreutils::LOG_DEBUG_1) << "Event process ending for socket " << getDescriptor();
|
|
||||||
// Was cleared several statements above (right after the EPOLLIN/
|
|
||||||
// EPOLLWRNORM handling), with no lock held around clearing it or
|
|
||||||
// calling resetSocket() below - a genuinely separate race from the
|
|
||||||
// one documented above: Socket::write() re-arms via this same
|
|
||||||
// resetSocket() (see its own doc comment there) whenever it can
|
|
||||||
// grab `lock`, from whatever thread called it (e.g. a broadcast
|
|
||||||
// hitting this session while ITS OWN eventReceived() call is still
|
|
||||||
// running, past receiveData()'s lock_guard but before reaching
|
|
||||||
// here). A first attempt narrowed this to just checking `inHandler`
|
|
||||||
// in both places, without holding `lock` across the check-and-act
|
|
||||||
// in either one - still a real TOCTOU window (inHandler read as
|
|
||||||
// false here, then write() on another thread sees false too and
|
|
||||||
// wins the race to resetSocket() first), confirmed live via
|
|
||||||
// AddressSanitizer as a genuine double-delete of the same session
|
|
||||||
// object (two threads both reaching ~TCPSession() on it) even
|
|
||||||
// after that narrowing. Holding `lock` for the whole
|
|
||||||
// clear-then-reset sequence - the exact same mutex write() already
|
|
||||||
// takes before its own resetSocket() call - makes the two
|
|
||||||
// mutually exclusive for real: whichever thread gets there first
|
|
||||||
// fully finishes (clearing inHandler and re-arming, or observing
|
|
||||||
// inHandler still true and skipping) before the other can act at
|
|
||||||
// all, closing the window rather than just narrowing it.
|
|
||||||
if(keepAlive) {
|
|
||||||
lock.lock();
|
|
||||||
inHandler = false;
|
inHandler = false;
|
||||||
resetSocket();
|
resetSocket();
|
||||||
lock.unlock();
|
|
||||||
}
|
}
|
||||||
// else: this object is about to be delete()'d by Thread::run() the
|
inHandler = false;
|
||||||
// moment this call returns, unconditionally, regardless of
|
// coreutils::Log(coreutils::LOG_DEBUG_1) << "Event process ending for socket " << getDescriptor();
|
||||||
// anything write() does. Leaving inHandler true forever (never
|
return !shutDown;
|
||||||
// clearing it here) means no other thread's write() can ever
|
|
||||||
// resetSocket() this dying object in the meantime - it has no
|
|
||||||
// future to reset it FOR, and letting write() re-arm it here, even
|
|
||||||
// briefly, was exactly the remaining gap: a third thread could
|
|
||||||
// pick up that re-armed fd and touch/delete an object Thread::run()
|
|
||||||
// was already about to free, a genuine double-delete confirmed
|
|
||||||
// live via AddressSanitizer even after write()/resetSocket() were
|
|
||||||
// otherwise fully serialized against each other.
|
|
||||||
return keepAlive;
|
|
||||||
}
|
}
|
||||||
|
|
||||||
void Socket::connectionRequest() {}
|
|
||||||
|
|
||||||
void Socket::onDataReceived(std::string data) {
|
void Socket::onDataReceived(std::string data) {
|
||||||
throw coreutils::Exception("Need to override onDataReceived.", __FILE__, __LINE__, -1);
|
throw coreutils::Exception("Need to override onDataReceived.", __FILE__, __LINE__, -1);
|
||||||
}
|
}
|
||||||
@@ -213,7 +95,10 @@ namespace core
|
|||||||
onDataReceived(std::string(data.getData(), data.getLength()));
|
onDataReceived(std::string(data.getData(), data.getLength()));
|
||||||
}
|
}
|
||||||
|
|
||||||
void Socket::receiveData(coreutils::ZString &buffer) {
|
void Socket::receiveDataNotification() {}
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
coreutils::ZString blank("");
|
coreutils::ZString blank("");
|
||||||
if(buffer.getLength() <= 0)
|
if(buffer.getLength() <= 0)
|
||||||
throw coreutils::Exception("Request to receive data with a zero buffer length.", __FILE__, __LINE__, -1);
|
throw coreutils::Exception("Request to receive data with a zero buffer length.", __FILE__, __LINE__, -1);
|
||||||
@@ -223,15 +108,20 @@ namespace core
|
|||||||
coreutils::ZString zbuffer(buffer.getData(), len);
|
coreutils::ZString zbuffer(buffer.getData(), len);
|
||||||
// coreutils::Log(coreutils::LOG_DEBUG_1) << zbuffer;
|
// coreutils::Log(coreutils::LOG_DEBUG_1) << zbuffer;
|
||||||
onDataReceived(zbuffer);
|
onDataReceived(zbuffer);
|
||||||
} else {
|
}
|
||||||
|
else
|
||||||
|
{
|
||||||
|
|
||||||
error = errno;
|
error = errno;
|
||||||
switch (error) {
|
|
||||||
|
switch (error)
|
||||||
|
{
|
||||||
|
|
||||||
// When a listening socket receives a connection
|
// When a listening socket receives a connection
|
||||||
// request we get one of these.
|
// request we get one of these.
|
||||||
|
//
|
||||||
case ENOTCONN:
|
case ENOTCONN:
|
||||||
connectionRequest();
|
onDataReceived(blank);
|
||||||
break;
|
break;
|
||||||
|
|
||||||
case ECONNRESET:
|
case ECONNRESET:
|
||||||
@@ -243,94 +133,13 @@ namespace core
|
|||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
int Socket::sendData(const char *data, int length) {
|
|
||||||
return ::write(descriptor, data, length);
|
|
||||||
}
|
|
||||||
|
|
||||||
void Socket::writeSocket() {
|
void Socket::writeSocket() {
|
||||||
outlock.lock();
|
outlock.lock();
|
||||||
// coreutils::Log(coreutils::LOG_DEBUG_3) << "writing data to socket " << getDescriptor();
|
// coreutils::Log(coreutils::LOG_DEBUG_3) << "writing data to socket " << getDescriptor();
|
||||||
if(fifo.size() > 0) {
|
if(fifo.size() > 0) {
|
||||||
// No longer gated on !shutDown: writeSocket() only ever runs in
|
if(!shutDown)
|
||||||
// response to an EPOLLWRNORM event this object explicitly
|
int rc = ::write(descriptor, fifo.front().c_str(), fifo.front().length());
|
||||||
// re-armed for (see resetSocket()'s own doc comment) - refusing
|
|
||||||
// to actually perform that queued write once shutDown was set
|
|
||||||
// was exactly what left a graceful QUIT/LOGOUT's own reply
|
|
||||||
// stuck in the fifo forever, never reaching the client.
|
|
||||||
{
|
|
||||||
// sendData()'s return value was previously discarded and the
|
|
||||||
// fifo entry popped unconditionally after ONE call - correct
|
|
||||||
// only by accident, since a single write()/SSL_write() call is
|
|
||||||
// never guaranteed to accept an entire buffer. A response
|
|
||||||
// small enough to fit the kernel's socket send buffer in one
|
|
||||||
// shot (true for almost everything on this site, and always
|
|
||||||
// true testing over loopback, where that buffer is
|
|
||||||
// effectively unlimited) went out fine either way - but a
|
|
||||||
// large one (confirmed with a real 208KB response, mostly an
|
|
||||||
// embedded base64 font: fine over loopback, but only ~65KB of
|
|
||||||
// it ever reached a real remote client before the rest was
|
|
||||||
// silently dropped here) left the client waiting forever for
|
|
||||||
// bytes matching its own Content-Length that were never
|
|
||||||
// coming. Now: pop only once the FULL entry has gone out;
|
|
||||||
// otherwise trim off just what was actually sent and leave
|
|
||||||
// the remainder queued - resetSocket() (called at the end of
|
|
||||||
// every eventReceived(), see its own doc comment) keeps
|
|
||||||
// re-arming EPOLLWRNORM as long as the fifo isn't empty, so
|
|
||||||
// the next write-ready event retries this same entry
|
|
||||||
// automatically. A return <= 0 (EAGAIN or a transient error)
|
|
||||||
// sends nothing this round and is handled identically - just
|
|
||||||
// leave the entry queued for the next attempt.
|
|
||||||
int sent = sendData(fifo.front().c_str(), fifo.front().length());
|
|
||||||
if(sent > 0) {
|
|
||||||
consecutiveWriteStalls = 0;
|
|
||||||
waitingOnReadToWrite = false;
|
|
||||||
if((size_t)sent >= fifo.front().length())
|
|
||||||
fifo.pop();
|
fifo.pop();
|
||||||
else
|
|
||||||
fifo.front().erase(0, sent);
|
|
||||||
} else if(sendNeedsRead()) {
|
|
||||||
// Not a stall in the CPU-spinning sense consecutiveWriteStalls
|
|
||||||
// exists to catch - resetSocket() below simply won't re-arm
|
|
||||||
// EPOLLWRNORM while this is true, so there's nothing to busy-
|
|
||||||
// retry until a real EPOLLIN event (already always watched
|
|
||||||
// for) brings in whatever OpenSSL is actually waiting to read.
|
|
||||||
waitingOnReadToWrite = true;
|
|
||||||
} else if(++consecutiveWriteStalls > 50) {
|
|
||||||
// sendData() keeps failing for a reason that has nothing to
|
|
||||||
// do with the socket's own write-readiness (confirmed real
|
|
||||||
// case: TLS::sendData() returning SSL_ERROR_WANT_READ,
|
|
||||||
// which needs a READ to make progress, not another write
|
|
||||||
// attempt) - resetSocket() re-arms EPOLLWRNORM regardless,
|
|
||||||
// and an already-writable TCP socket makes it fire again
|
|
||||||
// immediately, so this cycle would otherwise spin forever
|
|
||||||
// doing real work at the CPU's own top speed. See
|
|
||||||
// consecutiveWriteStalls' own doc comment in Socket.h for
|
|
||||||
// the confirmed real damage (a 55GB, then 12.9GB debug log)
|
|
||||||
// this caused before being noticed.
|
|
||||||
coreutils::Log(coreutils::LOG_EXCEPT) << "Socket " << getDescriptor() << ": " << consecutiveWriteStalls << " consecutive writes made zero progress - giving up and shutting down.";
|
|
||||||
// shutdown() alone only sets shutDown=true and expects the
|
|
||||||
// fifo to drain normally before the connection actually
|
|
||||||
// closes (see eventReceived()'s keepAlive: "!shutDown ||
|
|
||||||
// (fifo.size() > 0 && !readHangup)") - exactly backwards
|
|
||||||
// for THIS path, since the whole reason we're here is that
|
|
||||||
// the front of the fifo can never be sent. Leaving it
|
|
||||||
// queued meant keepAlive stayed true forever, resetSocket()
|
|
||||||
// kept re-arming EPOLLWRNORM because fifo.size() > 0, the
|
|
||||||
// very next write attempt hit this identical stall
|
|
||||||
// immediately, and shutdown() got called again - forever,
|
|
||||||
// at whatever rate the kernel could fire EPOLLWRNORM.
|
|
||||||
// Confirmed live: 2.4 million+ repeats of this exact log
|
|
||||||
// line for one socket in under 4 milliseconds, pegging a
|
|
||||||
// worker thread at 100% CPU indefinitely (a real game
|
|
||||||
// server, brought down by nothing more than an ordinary
|
|
||||||
// port-scanner connection). Clearing the undeliverable data
|
|
||||||
// here lets keepAlive correctly evaluate to just !shutDown
|
|
||||||
// (now false) on the very next cycle, so the connection
|
|
||||||
// actually tears down instead of spinning forever.
|
|
||||||
std::queue<std::string>().swap(fifo);
|
|
||||||
shutdown("stuck write retry loop - no progress after repeated attempts");
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
}
|
||||||
outlock.unlock();
|
outlock.unlock();
|
||||||
}
|
}
|
||||||
@@ -339,35 +148,7 @@ namespace core
|
|||||||
outlock.lock();
|
outlock.lock();
|
||||||
fifo.emplace(data);
|
fifo.emplace(data);
|
||||||
outlock.unlock();
|
outlock.unlock();
|
||||||
// Was unconditional - re-arming here (resetSocket() -> EPOLL_CTL_MOD)
|
|
||||||
// while this socket's OWN eventReceived() call is still mid-flight
|
|
||||||
// on another thread (inHandler true - see eventReceived()'s own
|
|
||||||
// comment on exactly this race) makes the fd immediately eligible
|
|
||||||
// for a THIRD thread to pick up a fresh event and potentially
|
|
||||||
// delete this object (Thread::run() does exactly that on a false
|
|
||||||
// return) while the first thread is still touching it - a genuine
|
|
||||||
// use-after-free, matching a real heap-corruption crash confirmed
|
|
||||||
// live via dmesg/AddressSanitizer under concurrent load.
|
|
||||||
// eventReceived() already re-arms itself once it's actually done
|
|
||||||
// (checking the current fifo, which already includes whatever was
|
|
||||||
// just queued above); skip doing it a second, early time from here
|
|
||||||
// while that's still in progress - the data isn't lost, just
|
|
||||||
// picked up on that call's own re-arm instead of this one's.
|
|
||||||
//
|
|
||||||
// inHandler must be re-checked AFTER acquiring `lock`, not just
|
|
||||||
// before try_lock() - checking it first and then separately
|
|
||||||
// acquiring the lock leaves a real TOCTOU gap (this thread reads
|
|
||||||
// inHandler==false, eventReceived() flips it back and forth on
|
|
||||||
// another thread, both end up calling resetSocket()); a first
|
|
||||||
// attempt at this fix only checked before, and a genuine
|
|
||||||
// double-delete of the same session object still reproduced live
|
|
||||||
// under AddressSanitizer despite it. eventReceived() holds this
|
|
||||||
// exact same `lock` across its own inHandler-clear-then-reset
|
|
||||||
// sequence now (see its own comment), so re-checking inHandler
|
|
||||||
// only after try_lock() succeeds makes the two truly mutually
|
|
||||||
// exclusive.
|
|
||||||
if(lock.try_lock()) {
|
if(lock.try_lock()) {
|
||||||
if(!inHandler)
|
|
||||||
resetSocket();
|
resetSocket();
|
||||||
lock.unlock();
|
lock.unlock();
|
||||||
}
|
}
|
||||||
@@ -405,17 +186,9 @@ namespace core
|
|||||||
struct epoll_event event;
|
struct epoll_event event;
|
||||||
event.data.ptr = this;
|
event.data.ptr = this;
|
||||||
event.events = EPOLLIN | EPOLLRDHUP | EPOLLONESHOT | EPOLLET;
|
event.events = EPOLLIN | EPOLLRDHUP | EPOLLONESHOT | EPOLLET;
|
||||||
if(fifo.size() > 0 && !waitingOnReadToWrite)
|
if(fifo.size() > 0)
|
||||||
event.events |= EPOLLWRNORM;
|
event.events |= EPOLLWRNORM;
|
||||||
// Was `if(!shutDown)` - refused to re-arm at all once shutting
|
if(!shutDown)
|
||||||
// down, even with data still queued to send (e.g. a graceful
|
|
||||||
// QUIT/LOGOUT's own final reply - see eventReceived()'s own doc
|
|
||||||
// comment on keepAlive for the full chain this broke). Re-arming
|
|
||||||
// for just long enough to drain the fifo, when the peer is still
|
|
||||||
// there to receive it (!readHangup - draining to an already-gone
|
|
||||||
// peer is pointless), is what actually lets that reply go out
|
|
||||||
// before this socket closes.
|
|
||||||
if(!shutDown || (fifo.size() > 0 && !readHangup))
|
|
||||||
epoll_ctl(ePoll.getDescriptor(), EPOLL_CTL_MOD, getDescriptor(), &event);
|
epoll_ctl(ePoll.getDescriptor(), EPOLL_CTL_MOD, getDescriptor(), &event);
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|||||||
@@ -1,11 +1,9 @@
|
|||||||
#ifndef __Socket_h__
|
#ifndef __Socket_h__
|
||||||
#define __Socket_h__
|
#define __Socket_h__
|
||||||
|
|
||||||
|
#include "includes"
|
||||||
|
#include "Object.h"
|
||||||
#include "ZString.h"
|
#include "ZString.h"
|
||||||
#include <queue>
|
|
||||||
#include <mutex>
|
|
||||||
#include <atomic>
|
|
||||||
#include <sys/epoll.h>
|
|
||||||
|
|
||||||
namespace core {
|
namespace core {
|
||||||
|
|
||||||
@@ -124,29 +122,8 @@ namespace core {
|
|||||||
|
|
||||||
protected:
|
protected:
|
||||||
|
|
||||||
// Set by Timer's own constructor (see its own doc comment) - a
|
|
||||||
// Timer is always a Socket subobject privately/multiply inherited
|
|
||||||
// alongside a session's own real network Socket (e.g. ZephoraSession
|
|
||||||
// : TCPSession, Timer), never a standalone connection with its own
|
|
||||||
// independent lifetime. eventReceived()'s ordinary keepAlive
|
|
||||||
// contract - returning false means "delete me" (see Thread::run(),
|
|
||||||
// which then does exactly that on this object's own Socket* base) -
|
|
||||||
// is correct for a real connection but catastrophic here: deleting
|
|
||||||
// through a pointer to just the Timer subobject deletes the entire
|
|
||||||
// composite object at the WRONG size (Timer/Socket's own smaller
|
|
||||||
// size, not the true derived object's), a new-delete-type-mismatch
|
|
||||||
// confirmed live via AddressSanitizer under concurrent load. A
|
|
||||||
// Timer's own fd is already correctly torn down as part of its
|
|
||||||
// containing object's own destructor chain; it never needs (and
|
|
||||||
// must never trigger) independent deletion through this path.
|
|
||||||
bool preventSelfDelete = false;
|
|
||||||
|
|
||||||
EPoll &ePoll; // The EPoll control object.
|
EPoll &ePoll; // The EPoll control object.
|
||||||
|
|
||||||
void setBufferSize(int length);
|
|
||||||
|
|
||||||
int getBufferSize();
|
|
||||||
|
|
||||||
///
|
///
|
||||||
/// The onConnected method is called when the socket is ready to communicate.
|
/// The onConnected method is called when the socket is ready to communicate.
|
||||||
/// Writing to the socket can begin on this call to initiate a contact with the
|
/// Writing to the socket can begin on this call to initiate a contact with the
|
||||||
@@ -155,13 +132,6 @@ namespace core {
|
|||||||
|
|
||||||
// virtual void onConnected(); ///< Called when socket is open and ready to communicate.
|
// virtual void onConnected(); ///< Called when socket is open and ready to communicate.
|
||||||
|
|
||||||
///
|
|
||||||
/// The connectionRequest method is called to instantiate a new session handler object
|
|
||||||
/// and form a new connection to a listening server.
|
|
||||||
///
|
|
||||||
|
|
||||||
virtual void connectionRequest();
|
|
||||||
|
|
||||||
///
|
///
|
||||||
///
|
///
|
||||||
///
|
///
|
||||||
@@ -169,47 +139,10 @@ namespace core {
|
|||||||
// virtual void onDisconnected(); ///< Called when socket is closing and no longer ready to communicate.
|
// virtual void onDisconnected(); ///< Called when socket is closing and no longer ready to communicate.
|
||||||
|
|
||||||
///
|
///
|
||||||
/// The onDataReceived method is called when the socket has received an event from
|
/// This method is called when data is ready to be read from the socket.
|
||||||
/// epoll and there is data ready to be read from the socket. The default handler
|
|
||||||
/// will pull the data and put it into the streambuf for the socket. EPOLLIN
|
|
||||||
///
|
|
||||||
/// @param data the data that has been received from the socket.
|
|
||||||
///
|
///
|
||||||
|
|
||||||
virtual void onDataReceived(std::string data); ///< Called when data is received from the socket.
|
virtual void readDataNotification();
|
||||||
|
|
||||||
///
|
|
||||||
///
|
|
||||||
///
|
|
||||||
|
|
||||||
virtual void onDataReceived(coreutils::ZString &data);
|
|
||||||
|
|
||||||
///
|
|
||||||
/// receiveData will read the data from the socket and place it in the socket buffer.
|
|
||||||
/// TLS layer overrides this to be able to read from SSL.
|
|
||||||
///
|
|
||||||
|
|
||||||
virtual void receiveData(coreutils::ZString &buffer);
|
|
||||||
|
|
||||||
///
|
|
||||||
/// sendData writes data to the socket descriptor. TLS layer overrides this to
|
|
||||||
/// write through SSL instead of a raw socket write.
|
|
||||||
///
|
|
||||||
/// @return The number of bytes written, or -1 on error.
|
|
||||||
///
|
|
||||||
|
|
||||||
virtual int sendData(const char *data, int length);
|
|
||||||
|
|
||||||
///
|
|
||||||
/// Overridden by TCPSocket to report whether the last sendData()
|
|
||||||
/// call failed specifically because the TLS layer needs a READ to
|
|
||||||
/// make progress (SSL_ERROR_WANT_READ), as opposed to any other
|
|
||||||
/// reason - see waitingOnReadToWrite's own doc comment for why
|
|
||||||
/// writeSocket()/resetSocket() need to know this. Always false for
|
|
||||||
/// a plain (non-TLS) socket, which has no such distinction.
|
|
||||||
///
|
|
||||||
|
|
||||||
virtual bool sendNeedsRead() { return false; }
|
|
||||||
|
|
||||||
private:
|
private:
|
||||||
|
|
||||||
@@ -217,11 +150,7 @@ namespace core {
|
|||||||
int descriptor = -1;
|
int descriptor = -1;
|
||||||
std::mutex outlock;
|
std::mutex outlock;
|
||||||
bool readHangup = false;
|
bool readHangup = false;
|
||||||
// Was `volatile bool` - volatile gives no actual thread-safety
|
volatile bool inHandler = false;
|
||||||
// (no atomicity, no cross-thread visibility guarantee), and this
|
|
||||||
// flag is now load-bearing (see Socket::write()'s own check of it)
|
|
||||||
// rather than just feeding a diagnostic log line.
|
|
||||||
std::atomic<bool> inHandler{false};
|
|
||||||
|
|
||||||
//-------------------------------------------------------------------------------------
|
//-------------------------------------------------------------------------------------
|
||||||
// the writeSocket is called when epoll has received a write request for a socket.
|
// the writeSocket is called when epoll has received a write request for a socket.
|
||||||
@@ -237,41 +166,8 @@ namespace core {
|
|||||||
// int_type pbackfail(int_type ch);
|
// int_type pbackfail(int_type ch);
|
||||||
// streamsize showmanyc();
|
// streamsize showmanyc();
|
||||||
|
|
||||||
char *buffer; // This is a pointer to the managed buffer space.
|
|
||||||
int length; // This is the length of the buffer.
|
|
||||||
|
|
||||||
std::queue<std::string> fifo;
|
std::queue<std::string> fifo;
|
||||||
|
|
||||||
// Counts consecutive writeSocket() calls that sent zero bytes for
|
|
||||||
// the SAME queued fifo entry (SSL_ERROR_WANT_READ from
|
|
||||||
// TLS::sendData() is the confirmed real case - see writeSocket()'s
|
|
||||||
// own doc comment). resetSocket() re-arms EPOLLWRNORM whenever the
|
|
||||||
// fifo is non-empty regardless of WHY the last send failed, and an
|
|
||||||
// already-writable TCP socket (the common case) makes EPOLLWRNORM
|
|
||||||
// fire again essentially immediately - so a send that keeps
|
|
||||||
// failing for a reason unrelated to socket writability (like SSL
|
|
||||||
// needing a read first) spins this cycle as fast as the CPU can
|
|
||||||
// run it, forever, with zero actual progress. Confirmed live: one
|
|
||||||
// stuck connection generated a 55GB, then a 12.9GB debug log
|
|
||||||
// before being noticed, at roughly 20 log lines per millisecond.
|
|
||||||
// Reset to 0 on any successful send (even a partial one - real
|
|
||||||
// progress happened); past the threshold, the connection is
|
|
||||||
// clearly never going to un-stick itself and gets shut down.
|
|
||||||
int consecutiveWriteStalls = 0;
|
|
||||||
|
|
||||||
// Set by writeSocket() when the last failed send specifically
|
|
||||||
// needed a read to proceed (sendNeedsRead() true) rather than
|
|
||||||
// being genuinely stalled on write-readiness. resetSocket() skips
|
|
||||||
// adding EPOLLWRNORM to the re-armed event mask while this is
|
|
||||||
// true - re-arming it anyway just spins the CPU as fast as it can
|
|
||||||
// loop, since an already-writable TCP socket keeps firing
|
|
||||||
// EPOLLWRNORM immediately while the actual blocker (more bytes
|
|
||||||
// from the peer) has nothing to do with write-readiness at all.
|
|
||||||
// Cleared on any EPOLLIN event (see eventReceived()) so the write
|
|
||||||
// gets a fresh attempt via that same event's own trailing
|
|
||||||
// resetSocket() call, once there's real reason to expect progress.
|
|
||||||
bool waitingOnReadToWrite = false;
|
|
||||||
|
|
||||||
void resetSocket();
|
void resetSocket();
|
||||||
|
|
||||||
std::mutex lock;
|
std::mutex lock;
|
||||||
|
|||||||
@@ -25,15 +25,8 @@ namespace core {
|
|||||||
std::stringstream out;
|
std::stringstream out;
|
||||||
|
|
||||||
out << "cancel:" << id << std::endl;
|
out << "cancel:" << id << std::endl;
|
||||||
// subscribers holds plain observer pointers, not ownership (see
|
|
||||||
// TCPSession::pin()'s own doc comment) - a subscriber's session may
|
|
||||||
// have already started tearing down on another thread by the time
|
|
||||||
// this runs. pin() safely tells the two cases apart instead of
|
|
||||||
// blindly dereferencing a pointer that might already be mid-
|
|
||||||
// destruction or fully freed.
|
|
||||||
for (auto subscriber : subscribers) {
|
for (auto subscriber : subscribers) {
|
||||||
if (auto safe = subscriber->pin())
|
subscriber->write(out.str());
|
||||||
safe->write(out.str());
|
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
@@ -72,14 +65,8 @@ namespace core {
|
|||||||
}
|
}
|
||||||
|
|
||||||
int Subscription::event(std::stringstream &out) {
|
int Subscription::event(std::stringstream &out) {
|
||||||
// See ~Subscription()'s comment above - same pin()-before-use
|
|
||||||
// reasoning applies to every subscriber write here. This is the
|
|
||||||
// broadcast path for every *SUBSCRIBERS-mode topic (chat, item
|
|
||||||
// database updates, etc.) - the exact crash pin() closes here was
|
|
||||||
// confirmed live under concurrent load this session.
|
|
||||||
for (auto subscriber = subscribers.begin(); subscriber < subscribers.end(); ++subscriber)
|
for (auto subscriber = subscribers.begin(); subscriber < subscribers.end(); ++subscriber)
|
||||||
if (auto safe = (*subscriber)->pin())
|
(*subscriber)->write(out.str());
|
||||||
safe->write(out.str());
|
|
||||||
return 1;
|
return 1;
|
||||||
}
|
}
|
||||||
|
|
||||||
@@ -98,8 +85,7 @@ namespace core {
|
|||||||
void Subscription::sendToAll(std::stringstream &data, TCPSession &sender) {
|
void Subscription::sendToAll(std::stringstream &data, TCPSession &sender) {
|
||||||
for (auto session : subscribers)
|
for (auto session : subscribers)
|
||||||
if (session != &sender)
|
if (session != &sender)
|
||||||
if (auto safe = session->pin())
|
session->write(data.str());
|
||||||
safe->write(data.str());
|
|
||||||
data.str("");
|
data.str("");
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|||||||
@@ -7,7 +7,6 @@
|
|||||||
#include "ZString.h"
|
#include "ZString.h"
|
||||||
#include <string>
|
#include <string>
|
||||||
#include <vector>
|
#include <vector>
|
||||||
#include <map>
|
|
||||||
|
|
||||||
namespace core {
|
namespace core {
|
||||||
|
|
||||||
|
|||||||
@@ -4,82 +4,61 @@
|
|||||||
#include "SubscriptionHandlerFactory.h"
|
#include "SubscriptionHandlerFactory.h"
|
||||||
#include "TCPServer.h"
|
#include "TCPServer.h"
|
||||||
#include <algorithm>
|
#include <algorithm>
|
||||||
#include <mutex>
|
|
||||||
|
|
||||||
namespace core
|
namespace core {
|
||||||
{
|
|
||||||
|
|
||||||
int SubscriptionManager::add(Subscription &subscription)
|
int SubscriptionManager::add(Subscription &subscription) {
|
||||||
{
|
|
||||||
lock.lock();
|
lock.lock();
|
||||||
subscriptions.insert(std::make_pair(subscription.id, &subscription));
|
subscriptions.insert(std::make_pair(subscription.id, &subscription));
|
||||||
lock.unlock();
|
lock.unlock();
|
||||||
return 1;
|
return 1;
|
||||||
}
|
}
|
||||||
|
|
||||||
bool SubscriptionManager::onClearSubscription(coreutils::MString temp, coreutils::MString key)
|
bool SubscriptionManager::onClearSubscription(coreutils::MString temp, coreutils::MString key) {
|
||||||
{
|
|
||||||
temp = "";
|
temp = "";
|
||||||
key = "";
|
key = "";
|
||||||
return true;
|
return true;
|
||||||
}
|
}
|
||||||
|
|
||||||
int SubscriptionManager::removeSessionSubscriptions(TCPSession &session)
|
int SubscriptionManager::removeSessionSubscriptions(TCPSession &session) {
|
||||||
{
|
|
||||||
int countSubscribed = 0;
|
int countSubscribed = 0;
|
||||||
int countPublished = 0;
|
int countPublished = 0;
|
||||||
int count = 0;
|
int count = 0;
|
||||||
|
|
||||||
lock.lock();
|
lock.lock();
|
||||||
coreutils::MString temp = "";
|
coreutils::MString temp = "";
|
||||||
for (auto [key, subscription] : subscriptions)
|
for (auto [key, subscription] : subscriptions) {
|
||||||
{
|
if (temp != "") {
|
||||||
if (temp != "")
|
|
||||||
{
|
|
||||||
subscriptions.erase(temp);
|
subscriptions.erase(temp);
|
||||||
temp = "";
|
temp = "";
|
||||||
}
|
}
|
||||||
countSubscribed += subscription->unsubscribe(session);
|
countSubscribed += subscription->unsubscribe(session);
|
||||||
if (subscription->subscriptionOwners == coreutils::MString(session.alias))
|
if (subscription->subscriptionOwners == session.alias) {
|
||||||
{
|
if (subscription->selectionOfOwnerForSubscription == "*DIE") {
|
||||||
if (subscription->selectionOfOwnerForSubscription == "*DIE")
|
|
||||||
{
|
|
||||||
onClearSubscription(temp, key);
|
onClearSubscription(temp, key);
|
||||||
}
|
}
|
||||||
|
|
||||||
else if (subscription->will == "*NEXT")
|
else if (subscription->will == "*NEXT") {
|
||||||
{
|
if (subscription->subscribers.size() < 1) {
|
||||||
if (subscription->subscribers.size() < 1)
|
|
||||||
{
|
|
||||||
coreutils::Log(coreutils::LOG_DEBUG_1) << "There is not enough people to move to the next";
|
coreutils::Log(coreutils::LOG_DEBUG_1) << "There is not enough people to move to the next";
|
||||||
onClearSubscription(temp, key);
|
onClearSubscription(temp, key);
|
||||||
}
|
}
|
||||||
else
|
else {
|
||||||
{
|
for (auto subscribed = subscription->subscribers.begin(); subscribed < subscription->subscribers.end(); subscribed++) {
|
||||||
for (auto subscribed = subscription->subscribers.begin(); subscribed < subscription->subscribers.end(); subscribed++)
|
if ((*subscribed)->alias == session.alias) {
|
||||||
{
|
|
||||||
// pin() before reading .alias - a raw subscriber
|
|
||||||
// pointer here could already be mid-destruction or
|
|
||||||
// fully freed on another thread (see
|
|
||||||
// TCPSession::pin()'s own doc comment).
|
|
||||||
if (auto safe = (*subscribed)->pin())
|
|
||||||
if (safe->alias == session.alias)
|
|
||||||
{
|
|
||||||
subscription->subscribers.erase(subscribed++);
|
subscription->subscribers.erase(subscribed++);
|
||||||
}
|
}
|
||||||
subscription->subscriptionOwner(session.alias, "*NEXT");
|
subscription->subscriptionOwner(session.alias, "*NEXT");
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
else
|
else {
|
||||||
{
|
|
||||||
coreutils::Log(coreutils::LOG_DEBUG_1) << "Subscription doesn't exist";
|
coreutils::Log(coreutils::LOG_DEBUG_1) << "Subscription doesn't exist";
|
||||||
}
|
}
|
||||||
++countPublished;
|
++countPublished;
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
if (temp != "")
|
if (temp != "") {
|
||||||
{
|
|
||||||
subscriptions.erase(temp);
|
subscriptions.erase(temp);
|
||||||
temp = "";
|
temp = "";
|
||||||
}
|
}
|
||||||
@@ -89,35 +68,13 @@ namespace core
|
|||||||
return countSubscribed;
|
return countSubscribed;
|
||||||
}
|
}
|
||||||
|
|
||||||
int SubscriptionManager::processCommand(coreutils::ZString &request, TCPSession &session)
|
int SubscriptionManager::processCommand(coreutils::ZString &request, TCPSession &session) {
|
||||||
{
|
if (request[0] == "publish") {
|
||||||
// Every branch below reads or mutates either the `subscriptions` map
|
|
||||||
// or some Subscription's own `subscribers` vector - both of which
|
|
||||||
// removeSessionSubscriptions() (called from ~TCPSession(), on
|
|
||||||
// whatever thread happens to be tearing down a *different*
|
|
||||||
// connection) also reads/mutates, under `lock`. This method used to
|
|
||||||
// take no lock at all, so a session disconnecting on one thread
|
|
||||||
// could run subscribers.erase() concurrently with subscribe()/
|
|
||||||
// event() iterating or push_back()-ing the same vector on another -
|
|
||||||
// an unsynchronized data race. Confirmed live: rapid connect/
|
|
||||||
// subscribe/disconnect cycles against ItemDataBase's "createItem"
|
|
||||||
// subscription produced a real segfault (gdb: Socket::write() ->
|
|
||||||
// resetSocket() dereferencing a corrupted EPoll reference) while
|
|
||||||
// broadcasting to *SUBSCRIBERS. `lock` is a plain, non-recursive
|
|
||||||
// std::mutex, and nothing reachable from this function re-enters
|
|
||||||
// processCommand()/add()/removeSessionSubscriptions() on the same
|
|
||||||
// thread, so holding it for the whole call is safe.
|
|
||||||
std::lock_guard<std::mutex> guard(lock);
|
|
||||||
|
|
||||||
if (request[0] == "publish")
|
|
||||||
{
|
|
||||||
SubscriptionHandler *handler = NULL;
|
SubscriptionHandler *handler = NULL;
|
||||||
if (request.getList().size() > 3)
|
if (request.getList().size() > 3) {
|
||||||
{
|
|
||||||
handler = factory->getSubscriptionHandler(request[4].str());
|
handler = factory->getSubscriptionHandler(request[4].str());
|
||||||
}
|
}
|
||||||
if (request[2] == "*OWNER")
|
if (request[2] == "*OWNER") {
|
||||||
{
|
|
||||||
newSubscription = new Subscription(request[1].str(), session.alias, request[2].str(), request[3].str(), handler, request[5].str(), request[6].str());
|
newSubscription = new Subscription(request[1].str(), session.alias, request[2].str(), request[3].str(), handler, request[5].str(), request[6].str());
|
||||||
subscriptions.insert(std::make_pair(request[1].str(), newSubscription));
|
subscriptions.insert(std::make_pair(request[1].str(), newSubscription));
|
||||||
return 1;
|
return 1;
|
||||||
@@ -125,101 +82,48 @@ namespace core
|
|||||||
|
|
||||||
return 1;
|
return 1;
|
||||||
}
|
}
|
||||||
else if (request[0] == "catalog")
|
else if (request[0] == "catalog") {
|
||||||
{
|
|
||||||
session.out << ":catalog:";
|
session.out << ":catalog:";
|
||||||
for (auto const &[key, subscription] : subscriptions)
|
for (auto const &[key, subscription] : subscriptions) {
|
||||||
{
|
|
||||||
session.out << subscription->id << ";";
|
session.out << subscription->id << ";";
|
||||||
}
|
}
|
||||||
session.out << std::endl;
|
session.out << std::endl;
|
||||||
return 1;
|
return 1;
|
||||||
}
|
}
|
||||||
else if (request[0] == "invite")
|
else if (request[0] == "invite") {
|
||||||
{
|
|
||||||
std::stringstream out;
|
std::stringstream out;
|
||||||
coreutils::Log(coreutils::LOG_DEBUG_1) << request[2];
|
coreutils::Log(coreutils::LOG_DEBUG_1) << request[2];
|
||||||
std::string invitee = request[2].str();
|
invitee = (coreutils::MString *)&request[2];
|
||||||
// Was getSessionByAlias(&invitee) - getSessionByAlias(void*)
|
TCPSession *tempSession = session.server.getSessionByAlias(invitee);
|
||||||
// compares by POINTER IDENTITY against each session's own
|
|
||||||
// alias, but &invitee is the address of a local variable that
|
|
||||||
// was just created in this function call - it can never equal
|
|
||||||
// any real session's alias, so this lookup was guaranteed to
|
|
||||||
// return NULL every time, and the result was dereferenced
|
|
||||||
// unconditionally below. Any client sending a bare "invite:"
|
|
||||||
// crashed the entire process, not just its own connection -
|
|
||||||
// same class of bug as the two GuildManager crashes fixed
|
|
||||||
// this session. This generic ServerCore layer has no
|
|
||||||
// name-based session lookup available (that only exists as a
|
|
||||||
// Zephora-specific addition on top of TCPServer), so a real
|
|
||||||
// fix for "find a session by the player name they typed"
|
|
||||||
// isn't possible at this layer without a larger change; this
|
|
||||||
// stops the crash without pretending to fix that gap.
|
|
||||||
// getSessionByAlias() now returns an already-pin()'d
|
|
||||||
// shared_ptr - see its own doc comment - so tempSession itself
|
|
||||||
// guarantees the session stays alive for this write() call
|
|
||||||
// below, no separate pin() needed.
|
|
||||||
auto tempSession = session.server->getSessionByAlias(&invitee);
|
|
||||||
if (!tempSession)
|
|
||||||
{
|
|
||||||
coreutils::Log(coreutils::LOG_DEBUG_1) << "invite: could not find session for " << invitee;
|
|
||||||
return 0;
|
|
||||||
}
|
|
||||||
std::stringstream temp;
|
std::stringstream temp;
|
||||||
temp << "invite:" << request[1] << ":" << invitee;
|
temp << "invite:" << request[1] << ":" << invitee;
|
||||||
tempSession->write(temp.str());
|
tempSession->write(temp.str());
|
||||||
return 1;
|
return 1;
|
||||||
}
|
}
|
||||||
|
|
||||||
// Was subscriptions[request[1].str()] - map::operator[] default-
|
auto subscription = subscriptions[request[1].str()];
|
||||||
// constructs (here: NULL) and INSERTS an entry for any id that
|
|
||||||
// isn't already registered, and subscription->id below was then
|
|
||||||
// dereferenced completely unconditionally. Any subscribe:/
|
|
||||||
// unsubscribe:/event: naming an id nobody ever created (confirmed
|
|
||||||
// live: "subscribe:invite", sent by the client on every scene
|
|
||||||
// load, referencing an "invite" subscription that plain doesn't
|
|
||||||
// exist anywhere - real invites are Publish()'d under a
|
|
||||||
// per-group-guid id, not a shared "invite" channel) null-derefs
|
|
||||||
// and takes down the ENTIRE process, every connection included,
|
|
||||||
// not just the one that sent it. find() avoids polluting the map
|
|
||||||
// with the bogus NULL entry too.
|
|
||||||
auto it = subscriptions.find(request[1].str());
|
|
||||||
if (it == subscriptions.end())
|
|
||||||
{
|
|
||||||
coreutils::Log(coreutils::LOG_DEBUG_1) << "Unknown subscription id: " << request[1].str();
|
|
||||||
return 0;
|
|
||||||
}
|
|
||||||
auto subscription = it->second;
|
|
||||||
|
|
||||||
if (request[1].equals(subscription->id))
|
if (request[1].equals(subscription->id)) {
|
||||||
{
|
if (request[0] == "unpublish") {
|
||||||
if (request[0] == "unpublish")
|
|
||||||
{
|
|
||||||
subscriptions.erase(request[1].str());
|
subscriptions.erase(request[1].str());
|
||||||
}
|
}
|
||||||
else if (request[0] == "subscribe")
|
else if (request[0] == "subscribe") {
|
||||||
{
|
|
||||||
subscription->subscribe(session);
|
subscription->subscribe(session);
|
||||||
return 1;
|
return 1;
|
||||||
}
|
}
|
||||||
else if (request[0] == "unsubscribe")
|
else if (request[0] == "unsubscribe") {
|
||||||
{
|
|
||||||
subscription->unsubscribe(session);
|
subscription->unsubscribe(session);
|
||||||
return 1;
|
return 1;
|
||||||
}
|
}
|
||||||
else if (request[0] == "event")
|
else if (request[0] == "event") {
|
||||||
{
|
|
||||||
std::stringstream out;
|
std::stringstream out;
|
||||||
subscription->process(request, out, session);
|
subscription->process(request, out, session);
|
||||||
if (subscription->mode == "*ANYONE")
|
if (subscription->mode == "*ANYONE") {
|
||||||
{
|
|
||||||
subscription->event(out);
|
subscription->event(out);
|
||||||
return 1;
|
return 1;
|
||||||
}
|
}
|
||||||
else if (subscription->mode == "*SUBSCRIBERS")
|
else if (subscription->mode == "*SUBSCRIBERS") {
|
||||||
{
|
if (subscription->ifSubscriber(session)) {
|
||||||
if (subscription->ifSubscriber(session))
|
|
||||||
{
|
|
||||||
subscription->event(out);
|
subscription->event(out);
|
||||||
return 1;
|
return 1;
|
||||||
}
|
}
|
||||||
|
|||||||
@@ -33,6 +33,7 @@ namespace core {
|
|||||||
std::map<coreutils::MString, Subscription *> subscriptions;
|
std::map<coreutils::MString, Subscription *> subscriptions;
|
||||||
Subscription *newSubscription;
|
Subscription *newSubscription;
|
||||||
std::mutex lock;
|
std::mutex lock;
|
||||||
|
coreutils::MString invitee;
|
||||||
|
|
||||||
};
|
};
|
||||||
|
|
||||||
|
|||||||
@@ -0,0 +1,29 @@
|
|||||||
|
#include "TCPLineBufferParser.h"
|
||||||
|
|
||||||
|
namespace core {
|
||||||
|
|
||||||
|
TCPLineBufferParser::TCPLineBufferParser() {
|
||||||
|
buffer = nullptr;
|
||||||
|
bufferSize = 4096;
|
||||||
|
buffer = realloc(buffer, bufferSize);
|
||||||
|
cursor = buffer;
|
||||||
|
}
|
||||||
|
|
||||||
|
void TCPLineBufferParser::readDataNotification() {
|
||||||
|
|
||||||
|
len = ::read(getDescriptor(), buffer, bufferSize);
|
||||||
|
|
||||||
|
for(unsigned int index = 0; index < bufferSize; ++index) {
|
||||||
|
if(cursor[index] == '\n') {
|
||||||
|
coreutils::ZString data(cursor, index);
|
||||||
|
dataReceived(data);
|
||||||
|
}
|
||||||
|
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
}
|
||||||
|
|
||||||
|
void TCPLineBufferParser::onDataReceived(coreutils::ZString data) {}
|
||||||
|
|
||||||
|
}
|
||||||
@@ -0,0 +1,43 @@
|
|||||||
|
#ifndef __TCPLineBufferParser_h__
|
||||||
|
#define __TCPLineBufferParser_h__
|
||||||
|
|
||||||
|
#include "TCPSocket.h"
|
||||||
|
|
||||||
|
namespace core {
|
||||||
|
|
||||||
|
///
|
||||||
|
/// TCPLineBufferParser
|
||||||
|
///
|
||||||
|
/// This object will read lines of data from the source one line at a time.
|
||||||
|
///
|
||||||
|
///
|
||||||
|
|
||||||
|
class TCPLineBufferParser : public TCPSocket {
|
||||||
|
|
||||||
|
protected:
|
||||||
|
|
||||||
|
///
|
||||||
|
/// This method is called when a line is ready to be processed.
|
||||||
|
///
|
||||||
|
|
||||||
|
virtual void onDataReceived();
|
||||||
|
|
||||||
|
private:
|
||||||
|
|
||||||
|
///
|
||||||
|
/// Read the data for the socket and split into lines and call dataReceived
|
||||||
|
/// for each line parsed.
|
||||||
|
///
|
||||||
|
|
||||||
|
void readDataNotification() override;
|
||||||
|
|
||||||
|
char *buffer;
|
||||||
|
size_t bufferSize;
|
||||||
|
char *cursor;
|
||||||
|
|
||||||
|
};
|
||||||
|
|
||||||
|
}
|
||||||
|
|
||||||
|
#endif
|
||||||
|
|
||||||
@@ -3,20 +3,14 @@
|
|||||||
#include "Exception.h"
|
#include "Exception.h"
|
||||||
#include "Log.h"
|
#include "Log.h"
|
||||||
#include "TCPSession.h"
|
#include "TCPSession.h"
|
||||||
#include <chrono>
|
|
||||||
#include <vector>
|
|
||||||
|
|
||||||
namespace core {
|
namespace core
|
||||||
|
{
|
||||||
|
|
||||||
TCPServer::TCPServer(EPoll &ePoll, IPAddress address, TLSInfo *tlsInfo, std::string delimiter, int depth, std::string text)
|
TCPServer::TCPServer(EPoll &ePoll, IPAddress address, std::string delimiter, int depth, std::string text)
|
||||||
: TCPSocket(ePoll, tlsInfo, text), commands(delimiter, depth) {
|
: TCPSocket(ePoll, text), commands(delimiter, depth)
|
||||||
|
{
|
||||||
|
|
||||||
// Wires the subscription (pub/sub) command set into this server's
|
|
||||||
// own command dispatch - previously missing entirely here (the
|
|
||||||
// subscriptions member existed but nothing ever routed these verbs
|
|
||||||
// to it), so publish/subscribe/catalog/etc were unreachable on any
|
|
||||||
// TCPServer built after the TLS work, even though SubscriptionManager
|
|
||||||
// itself was still fully implemented.
|
|
||||||
commands.add(subscriptions, "publish");
|
commands.add(subscriptions, "publish");
|
||||||
commands.add(subscriptions, "unpublish");
|
commands.add(subscriptions, "unpublish");
|
||||||
commands.add(subscriptions, "subscribe");
|
commands.add(subscriptions, "subscribe");
|
||||||
@@ -32,103 +26,27 @@ namespace core {
|
|||||||
if (bind(getDescriptor(), address.getPointer(), address.addressLength) < 0)
|
if (bind(getDescriptor(), address.getPointer(), address.addressLength) < 0)
|
||||||
throw coreutils::Exception("Error on bind to socket: " + std::to_string(errno));
|
throw coreutils::Exception("Error on bind to socket: " + std::to_string(errno));
|
||||||
|
|
||||||
// Was 20 - small enough that a burst of connection attempts
|
if (listen(getDescriptor(), 20) < 0)
|
||||||
// arriving faster than this process calls accept() (a port scan,
|
|
||||||
// or just several real clients reconnecting around the same
|
|
||||||
// moment) can fill the kernel's own backlog before the
|
|
||||||
// application layer gets a chance to drain it, silently dropping
|
|
||||||
// the overflow SYNs rather than queuing them. 128 gives real
|
|
||||||
// bursts meaningfully more headroom; still bounded, not unlimited.
|
|
||||||
if (listen(getDescriptor(), 128) < 0)
|
|
||||||
throw coreutils::Exception("Error on listen to socket");
|
throw coreutils::Exception("Error on listen to socket");
|
||||||
|
}
|
||||||
|
|
||||||
// See isKnownListeningSocket()'s own doc comment - registers this
|
TCPServer::~TCPServer()
|
||||||
// listening socket as safe for Thread::run() to dispatch to
|
|
||||||
// directly, distinct from the shared_ptr-owned TCPSession registry.
|
|
||||||
{
|
{
|
||||||
std::lock_guard<std::mutex> guard(listeningSocketsMutex());
|
|
||||||
listeningSockets().insert(this);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
TCPServer::~TCPServer() {
|
|
||||||
coreutils::Log(coreutils::LOG_DEBUG_2) << "Closing server socket " << getDescriptor() << ".";
|
coreutils::Log(coreutils::LOG_DEBUG_2) << "Closing server socket " << getDescriptor() << ".";
|
||||||
close(getDescriptor());
|
close(getDescriptor());
|
||||||
}
|
}
|
||||||
|
|
||||||
void TCPServer::connectionRequest() {
|
void TCPServer::onDataReceived(std::string data)
|
||||||
coreutils::Log(coreutils::LOG_DEBUG_2) << "Connection request is being received on socket " << getDescriptor() << ".";
|
{
|
||||||
// Outside the lock.lock()/unlock() below, not nested inside it -
|
|
||||||
// sweepStaleSessions() takes the same `lock` itself (see its own
|
|
||||||
// comment), and this mutex isn't recursive.
|
|
||||||
sweepStaleSessions();
|
|
||||||
lock.lock();
|
lock.lock();
|
||||||
TCPSession *session = accept();
|
TCPSession *session = accept();
|
||||||
// The shared_ptr constructed here IS the session's real, strong
|
if (session)
|
||||||
// ownership from now on (see sessions' own doc comment). A second
|
sessions.push_back(session);
|
||||||
// reference to the SAME shared_ptr (never a second, independent
|
|
||||||
// std::shared_ptr<TCPSession>(session) call on the same raw
|
|
||||||
// pointer - that would create a second, competing control block
|
|
||||||
// and a guaranteed double-free) also goes into the tryGet()
|
|
||||||
// registry, which is what Thread::run()'s epoll dispatch actually
|
|
||||||
// uses to safely reach this object (see TCPSession::tryGet()'s
|
|
||||||
// own comment on why).
|
|
||||||
if (session) {
|
|
||||||
auto sessionPtr = std::shared_ptr<TCPSession>(session);
|
|
||||||
sessions.push_back(sessionPtr);
|
|
||||||
TCPSession::registerLive(session, sessionPtr);
|
|
||||||
}
|
|
||||||
// Must run ON THE SESSION, not `this` (the listening server) - the
|
|
||||||
// unqualified registerSocket()/acceptSocket() calls this replaced
|
|
||||||
// built the SSL* handshake state on the SERVER's own TLS-base
|
|
||||||
// member instead of the newly accepted session's, leaving every
|
|
||||||
// session's own `ssl` uninitialized and segfaulting the first time
|
|
||||||
// real data arrived on it (SSL_read() against a never-SSL_new()'d
|
|
||||||
// pointer - confirmed via gdb). Sessions already correctly inherit
|
|
||||||
// this server's SSL_CTX at construction (TCPSession's own
|
|
||||||
// TLS(SSL_CTX*)-taking constructor) - performTLSHandshake() just
|
|
||||||
// needed to actually be invoked on that object.
|
|
||||||
if (session && tlsInfo)
|
|
||||||
session->performTLSHandshake();
|
|
||||||
lock.unlock();
|
lock.unlock();
|
||||||
}
|
}
|
||||||
|
|
||||||
void TCPServer::sweepStaleSessions() {
|
TCPSession *TCPServer::accept()
|
||||||
// 30 seconds is generous for completing a TCP handshake plus a
|
|
||||||
// TLS handshake plus sending a first real message over any real
|
|
||||||
// network - deliberately not aimed at catching anything borderline,
|
|
||||||
// only connections that never progressed at all.
|
|
||||||
static const std::chrono::seconds GRACE_PERIOD(30);
|
|
||||||
auto now = std::chrono::steady_clock::now();
|
|
||||||
|
|
||||||
// Collect under `lock` (sessions is mutated elsewhere under the
|
|
||||||
// same mutex - see its own doc comment), then drop the lock before
|
|
||||||
// actually removing anything. removeFromSessionList() takes `lock`
|
|
||||||
// itself for each call; calling it while still holding the guard
|
|
||||||
// below would deadlock on this non-recursive mutex.
|
|
||||||
std::vector<TCPSession *> stale;
|
|
||||||
{
|
{
|
||||||
std::lock_guard guard(lock);
|
|
||||||
for (auto &s : sessions)
|
|
||||||
if (!s->hasReceivedData && (now - s->acceptedAt) > GRACE_PERIOD)
|
|
||||||
stale.push_back(s.get());
|
|
||||||
}
|
|
||||||
|
|
||||||
for (auto *s : stale) {
|
|
||||||
coreutils::Log(coreutils::LOG_DEBUG_2) << "Reaping stale, never-active session " << s->getDescriptor() << ".";
|
|
||||||
removeFromSessionList(s);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
void TCPServer::receiveData(coreutils::ZString &buffer) {
|
|
||||||
// See this override's own doc comment in TCPServer.h - the
|
|
||||||
// listening socket always uses the plain read()/ENOTCONN detection
|
|
||||||
// path, never TLS::receiveData(), regardless of whether this server
|
|
||||||
// is TLS-configured.
|
|
||||||
Socket::receiveData(buffer);
|
|
||||||
}
|
|
||||||
|
|
||||||
TCPSession * TCPServer::accept() {
|
|
||||||
|
|
||||||
try
|
try
|
||||||
{
|
{
|
||||||
@@ -147,50 +65,38 @@ namespace core {
|
|||||||
// }
|
// }
|
||||||
return session;
|
return session;
|
||||||
}
|
}
|
||||||
catch (coreutils::Exception e) {
|
catch (coreutils::Exception e)
|
||||||
|
{
|
||||||
coreutils::Log(coreutils::LOG_EXCEPT) << "Major error on session initialization. Error is '" << e.text << "'.";
|
coreutils::Log(coreutils::LOG_EXCEPT) << "Major error on session initialization. Error is '" << e.text << "'.";
|
||||||
}
|
}
|
||||||
catch (...) {
|
catch (...)
|
||||||
|
{
|
||||||
coreutils::Log(coreutils::LOG_EXCEPT) << "Unnspecified error on session initialization.";
|
coreutils::Log(coreutils::LOG_EXCEPT) << "Unnspecified error on session initialization.";
|
||||||
}
|
}
|
||||||
return NULL;
|
return NULL;
|
||||||
}
|
}
|
||||||
|
|
||||||
void TCPServer::removeFromSessionList(TCPSession *session) {
|
void TCPServer::removeFromSessionList(TCPSession *session)
|
||||||
lock.lock();
|
{
|
||||||
for (auto cursor = sessions.begin(); cursor < sessions.end(); ++cursor)
|
std::vector<TCPSession *>::iterator cursor;
|
||||||
if (cursor->get() == session)
|
lock.lock();
|
||||||
|
for (cursor = sessions.begin(); cursor < sessions.end(); ++cursor)
|
||||||
|
if (*cursor == session)
|
||||||
{
|
{
|
||||||
// Drops the one strong-owning reference. If nothing else is
|
|
||||||
// currently pin()'d to this session, the object is actually
|
|
||||||
// destroyed right here, synchronously - same timing as
|
|
||||||
// before this change for the common (no-contention) case.
|
|
||||||
// If some other thread IS mid-call via its own pin()'d
|
|
||||||
// shared_ptr right now, destruction is safely deferred until
|
|
||||||
// that reference is released too, instead of the crash
|
|
||||||
// (double-delete / use-after-free, confirmed live via
|
|
||||||
// AddressSanitizer under concurrent load) that raw-pointer
|
|
||||||
// ownership produced here before.
|
|
||||||
sessions.erase(cursor);
|
sessions.erase(cursor);
|
||||||
break;
|
break;
|
||||||
}
|
}
|
||||||
lock.unlock();
|
lock.unlock();
|
||||||
// Removes this pointer from the tryGet() lookup registry too (see
|
|
||||||
// TCPSession::tryGet()'s own comment). Safe to do after releasing
|
|
||||||
// `lock` and regardless of whether the erase() above was actually
|
|
||||||
// the last reference: tryGet() correctly reports "gone" the moment
|
|
||||||
// a session's real refcount hits zero, via the weak_ptr's own
|
|
||||||
// expiration - this call is just tidying the registry map itself,
|
|
||||||
// not something later correctness depends on.
|
|
||||||
TCPSession::unregisterLive(session);
|
|
||||||
}
|
}
|
||||||
|
|
||||||
void TCPServer::sessionErrorHandler(std::string errorString, std::stringstream &out) {
|
void TCPServer::sessionErrorHandler(std::string errorString, std::stringstream &out)
|
||||||
|
{
|
||||||
throw coreutils::Exception(errorString);
|
throw coreutils::Exception(errorString);
|
||||||
}
|
}
|
||||||
|
|
||||||
TCPSession * TCPServer::getSocketAccept(EPoll &ePoll) {
|
TCPSession *TCPServer::getSocketAccept(EPoll &ePoll)
|
||||||
return new TCPSession(ePoll, this);
|
{
|
||||||
|
return new TCPSession(ePoll, *this);
|
||||||
}
|
}
|
||||||
|
|
||||||
void TCPServer::output(std::stringstream &out)
|
void TCPServer::output(std::stringstream &out)
|
||||||
@@ -200,23 +106,8 @@ namespace core {
|
|||||||
|
|
||||||
int TCPServer::processCommand(coreutils::ZString &request, TCPSession &session)
|
int TCPServer::processCommand(coreutils::ZString &request, TCPSession &session)
|
||||||
{
|
{
|
||||||
// Was unguarded, like every other method below - `sessions` is
|
|
||||||
// mutated under `lock` by connectionRequest()/removeFromSessionList()
|
|
||||||
// (a session accepting or disconnecting on another thread), but
|
|
||||||
// every READ of it here had no lock at all. Confirmed live via
|
|
||||||
// dmesg: a real segfault at a stable, deterministic instruction
|
|
||||||
// offset (same crash signature as the Subscription::subscribers
|
|
||||||
// race fixed earlier this session, in SubscriptionManager.cpp) -
|
|
||||||
// Socket::write() -> resetSocket() dereferencing a null EPoll
|
|
||||||
// reference, consistent with iterating `sessions` while another
|
|
||||||
// thread concurrently erased and freed one of its entries.
|
|
||||||
// sendToAll() in particular is what most real gameplay broadcasts
|
|
||||||
// (combat, position, chat) go through, so this is very likely the
|
|
||||||
// actual dominant cause of that crash, not just the ItemDataBase
|
|
||||||
// subscriber list this session's earlier fix addressed.
|
|
||||||
std::lock_guard guard(lock);
|
|
||||||
int sequence = 0;
|
int sequence = 0;
|
||||||
for (auto &sessionx : sessions)
|
for (auto *sessionx : sessions)
|
||||||
{
|
{
|
||||||
session.out << "|" << ++sequence;
|
session.out << "|" << ++sequence;
|
||||||
sessionx->output(session.out);
|
sessionx->output(session.out);
|
||||||
@@ -225,37 +116,35 @@ namespace core {
|
|||||||
return 1;
|
return 1;
|
||||||
}
|
}
|
||||||
|
|
||||||
void TCPServer::sendToAll(std::stringstream &data) {
|
void TCPServer::sendToAll(std::stringstream &data)
|
||||||
std::lock_guard guard(lock);
|
{
|
||||||
for (auto &session : sessions)
|
for (auto session : sessions)
|
||||||
session->write(data.str());
|
session->write(data.str());
|
||||||
data.str("");
|
data.str("");
|
||||||
}
|
}
|
||||||
|
|
||||||
void TCPServer::sendToAll(std::stringstream &data, TCPSession &sender) {
|
void TCPServer::sendToAll(std::stringstream &data, TCPSession &sender)
|
||||||
std::lock_guard guard(lock);
|
{
|
||||||
for (auto &session : sessions)
|
for (auto session : sessions)
|
||||||
if (session.get() != &sender)
|
if (session != &sender)
|
||||||
session->write(data.str());
|
session->write(data.str());
|
||||||
data.str("");
|
data.str("");
|
||||||
}
|
}
|
||||||
|
|
||||||
void TCPServer::sendToAll(std::stringstream &data, TCPSession &sender, SessionFilter filter) {
|
void TCPServer::sendToAll(std::stringstream &data, TCPSession &sender, SessionFilter filter)
|
||||||
std::lock_guard guard(lock);
|
{
|
||||||
for (auto &session : sessions)
|
for (auto session : sessions)
|
||||||
if (filter.test(*session))
|
if (filter.test(*session))
|
||||||
if (session.get() != &sender)
|
if (session != &sender)
|
||||||
session->write(data.str());
|
session->write(data.str());
|
||||||
data.str("");
|
data.str("");
|
||||||
}
|
}
|
||||||
|
|
||||||
std::shared_ptr<TCPSession> TCPServer::getSessionByAlias(void *alias) {
|
TCPSession *TCPServer::getSessionByAlias(coreutils::MString alias) {
|
||||||
coreutils::Log(coreutils::LOG_DEBUG_1) << alias;
|
for (auto session : sessions)
|
||||||
std::lock_guard guard(lock);
|
|
||||||
for (auto &session : sessions)
|
|
||||||
if (session->alias == alias)
|
if (session->alias == alias)
|
||||||
return session;
|
return session;
|
||||||
return nullptr;
|
return NULL;
|
||||||
}
|
}
|
||||||
|
|
||||||
}
|
}
|
||||||
@@ -8,11 +8,9 @@
|
|||||||
#include "SubscriptionManager.h"
|
#include "SubscriptionManager.h"
|
||||||
#include "TCPSession.h"
|
#include "TCPSession.h"
|
||||||
#include "TCPSocket.h"
|
#include "TCPSocket.h"
|
||||||
# include "TLSInfo.h"
|
|
||||||
# include <mutex>
|
|
||||||
# include <set>
|
|
||||||
|
|
||||||
namespace core {
|
namespace core
|
||||||
|
{
|
||||||
|
|
||||||
///
|
///
|
||||||
/// TCPServer
|
/// TCPServer
|
||||||
@@ -22,14 +20,14 @@ namespace core {
|
|||||||
///
|
///
|
||||||
/// A list of connections is maintained in a vector object.
|
/// A list of connections is maintained in a vector object.
|
||||||
///
|
///
|
||||||
/// This object extends the Command object as well so it can be added to a Console object and
|
/// This object extends the BMACommand object as well so it can be added to a Console object and
|
||||||
/// process commands to display status information.
|
/// process commands to display status information.
|
||||||
///
|
///
|
||||||
|
|
||||||
class TCPServer : public TCPSocket, public Command {
|
class TCPServer : public TCPSocket, public Command
|
||||||
|
{
|
||||||
|
|
||||||
public:
|
public:
|
||||||
|
|
||||||
///
|
///
|
||||||
/// The constructor for the TCPServer object.
|
/// The constructor for the TCPServer object.
|
||||||
///
|
///
|
||||||
@@ -39,7 +37,7 @@ namespace core {
|
|||||||
/// @param commandName the name of the command used to invoke the status display for this object.
|
/// @param commandName the name of the command used to invoke the status display for this object.
|
||||||
///
|
///
|
||||||
|
|
||||||
TCPServer(EPoll &ePoll, IPAddress address, TLSInfo *tlsInfo, std::string delimiter = " ", int depth = 10, std::string text = "");
|
TCPServer(EPoll &ePoll, IPAddress address, std::string delimiter = " ", int depth = 10, std::string text = "");
|
||||||
|
|
||||||
///
|
///
|
||||||
/// The destructor for this object.
|
/// The destructor for this object.
|
||||||
@@ -62,20 +60,8 @@ namespace core {
|
|||||||
///
|
///
|
||||||
/// The list of sessions that are currently open and being maintained by this object.
|
/// The list of sessions that are currently open and being maintained by this object.
|
||||||
///
|
///
|
||||||
/// This is the one real, strong-owning reference per live session -
|
|
||||||
/// see TCPSession::pin()'s own doc comment for the full reasoning.
|
|
||||||
/// Every other place that keeps a TCPSession* around (Subscription::
|
|
||||||
/// subscribers, a Zephora-specific sessionsByPlayerName map, etc.)
|
|
||||||
/// is just a non-owning observer and must pin() before touching the
|
|
||||||
/// object. A session stops existing, for real, the instant its
|
|
||||||
/// entry here is erased and every other outstanding pin() (if any
|
|
||||||
/// thread happened to be mid-call) has released its own reference -
|
|
||||||
/// removeFromSessionList() is the only place that ever removes an
|
|
||||||
/// entry, and Thread::run() calls it instead of ever calling
|
|
||||||
/// `delete` on a TCPSession directly (see its own comment).
|
|
||||||
///
|
|
||||||
|
|
||||||
std::vector<std::shared_ptr<TCPSession>> sessions;
|
std::vector<TCPSession *> sessions;
|
||||||
|
|
||||||
///
|
///
|
||||||
/// The commands object is a CommandList and is used to store Command objects to be
|
/// The commands object is a CommandList and is used to store Command objects to be
|
||||||
@@ -133,64 +119,23 @@ namespace core {
|
|||||||
|
|
||||||
///
|
///
|
||||||
/// Use the getSessionByAlias to retrieve a session pointer by the value
|
/// Use the getSessionByAlias to retrieve a session pointer by the value
|
||||||
/// of the alias pointer. Returns an already-pin()'d shared_ptr (null
|
/// of the alias pointer.
|
||||||
/// if not found) rather than a raw pointer, so callers can't
|
|
||||||
/// accidentally hold onto - or use - a reference that isn't actually
|
|
||||||
/// keeping the session alive.
|
|
||||||
///
|
///
|
||||||
|
|
||||||
std::shared_ptr<TCPSession> getSessionByAlias(void *alias);
|
TCPSession *getSessionByAlias(coreutils::MString alias);
|
||||||
|
|
||||||
protected:
|
protected:
|
||||||
///
|
///
|
||||||
/// This method is called by the lower socket when a connection request comes into
|
/// Override the virtual dataReceived since for the server these
|
||||||
/// the listening and bound server port.
|
/// are requests to accept the new connection socket.
|
||||||
|
/// No data is to be read or written when this method is called. It is the response to
|
||||||
|
/// the fact that a new connection is coming into the system
|
||||||
|
///
|
||||||
|
/// @param data the pointer to the buffer containing the received data.
|
||||||
|
/// @param length the length of the associated data buffer.
|
||||||
///
|
///
|
||||||
|
|
||||||
void connectionRequest() override;
|
void onDataReceived(std::string data) override;
|
||||||
|
|
||||||
///
|
|
||||||
/// Drops any session that completed a TCP accept() but has never
|
|
||||||
/// had a single byte of real data pass through onDataReceived() -
|
|
||||||
/// covers both a TLS handshake that never finishes and a plain
|
|
||||||
/// connection that never sends anything - once it's been open
|
|
||||||
/// longer than a short grace period. Nothing else in this class
|
|
||||||
/// ever revisits an already-accepted session once it stops
|
|
||||||
/// generating epoll events (Thread::run()'s dispatch loop only
|
|
||||||
/// acts on a session when a real event for it arrives), so a
|
|
||||||
/// connection that completes the handshake and then goes
|
|
||||||
/// permanently silent - exactly what a port scan/prober looks
|
|
||||||
/// like from here, as opposed to a normal scan that just connects
|
|
||||||
/// and immediately closes again, which the existing read-hangup
|
|
||||||
/// path already cleans up fine - would otherwise sit in `sessions`
|
|
||||||
/// forever, one TCPSession + one fd each. Called from
|
|
||||||
/// connectionRequest() (see its own call site) so the sweep keeps
|
|
||||||
/// pace with however fast new connections are actually arriving,
|
|
||||||
/// without needing a dedicated timer/thread of its own; a
|
|
||||||
/// legitimate, already-talking client is never at risk, since
|
|
||||||
/// hasReceivedData latches true permanently on its first real byte
|
|
||||||
/// and is never consulted again after that.
|
|
||||||
///
|
|
||||||
|
|
||||||
void sweepStaleSessions();
|
|
||||||
|
|
||||||
///
|
|
||||||
/// The listening socket itself is never a TLS peer - accepting a
|
|
||||||
/// connection on it surfaces as a plain read() failing with ENOTCONN
|
|
||||||
/// (see Socket::receiveData(), which is what actually detects and
|
|
||||||
/// dispatches to connectionRequest() above). When this server is
|
|
||||||
/// TLS-configured, TCPSocket::receiveData()'s normal ctx-based
|
|
||||||
/// dispatch would instead route that same event through
|
|
||||||
/// TLS::receiveData()/SSL_read() against a listening fd that was
|
|
||||||
/// never SSL_accept()-ed at all (real per-connection sessions are
|
|
||||||
/// the only sockets TLS applies to) - confirmed via a real crash
|
|
||||||
/// (SIGSEGV inside SSL_read, called with `this` pointing at this
|
|
||||||
/// server object, not a session). Always using the plain path here,
|
|
||||||
/// regardless of whether tlsInfo is set, keeps connection-detection
|
|
||||||
/// working the same way with or without TLS configured.
|
|
||||||
///
|
|
||||||
|
|
||||||
void receiveData(coreutils::ZString &buffer) override;
|
|
||||||
|
|
||||||
///
|
///
|
||||||
/// This method is called when the Command associated with this object is requested
|
/// This method is called when the Command associated with this object is requested
|
||||||
@@ -201,74 +146,9 @@ namespace core {
|
|||||||
|
|
||||||
int processCommand(coreutils::ZString &request, TCPSession &session) override;
|
int processCommand(coreutils::ZString &request, TCPSession &session) override;
|
||||||
|
|
||||||
protected:
|
|
||||||
// Was private - ConsoleServer::logSend() (and any other subclass
|
|
||||||
// that iterates `sessions`, itself public further up) needs to be
|
|
||||||
// able to synchronize against the exact same mutex
|
|
||||||
// connectionRequest()/removeFromSessionList() already use, rather
|
|
||||||
// than reading a shared_ptr vector with no locking of its own.
|
|
||||||
//
|
|
||||||
// Was a plain std::mutex - self-deadlocked the accepting thread on
|
|
||||||
// EVERY single connection to ConsoleServer (confirmed live via a
|
|
||||||
// gdb thread dump caught mid-stall): connectionRequest() locks
|
|
||||||
// `lock`, then calls accept(), which constructs the new session -
|
|
||||||
// whose base Socket constructor logs its own creation via
|
|
||||||
// coreutils::Log, whose destructor calls back into
|
|
||||||
// ConsoleServer::logSend() (exactly the synchronization this was
|
|
||||||
// designed for, per the comment above) - which tries to lock this
|
|
||||||
// SAME mutex again, on the SAME thread that already holds it.
|
|
||||||
// std::mutex is not reentrant, so that thread deadlocked
|
|
||||||
// permanently, every time, without ever completing the accept -
|
|
||||||
// this is why the admin console never responded to anything.
|
|
||||||
// Since all of a server's listening sockets share one fixed-size
|
|
||||||
// EPoll worker-thread pool, each such deadlocked thread is gone
|
|
||||||
// for good - enough accumulated connection attempts (even
|
|
||||||
// sporadic ones, e.g. internet-wide port scanners probing every
|
|
||||||
// port) eventually exhausts every worker thread, at which point
|
|
||||||
// the WHOLE server - every listening socket, not just the
|
|
||||||
// console - stops accepting anything new. This is the actual
|
|
||||||
// root cause of BARANTMail's own multi-day-recurring "all ports
|
|
||||||
// simultaneously stop accepting connections" incidents - nothing
|
|
||||||
// to do with DNS/SPF lookup timing, which was a real, separate,
|
|
||||||
// worthwhile fix but not this bug. recursive_mutex lets the same
|
|
||||||
// thread re-enter safely (identical behavior to std::mutex for
|
|
||||||
// every other thread) without changing the locking design at all.
|
|
||||||
std::recursive_mutex lock;
|
|
||||||
|
|
||||||
public:
|
|
||||||
///
|
|
||||||
/// A listening TCPServer/ConsoleServer (as opposed to an accepted
|
|
||||||
/// TCPSession) is constructed once, directly by main(), and lives
|
|
||||||
/// for the whole process - never through the shared_ptr-based
|
|
||||||
/// ownership TCPSession::registerLive()/pin() provide (see their
|
|
||||||
/// own comments), since nothing ever calls `new` on one of these.
|
|
||||||
/// Thread::run()'s epoll dispatch still needs a SAFE way to tell
|
|
||||||
/// "this raw pointer is one of those known-immortal listening
|
|
||||||
/// sockets, fine to call methods on directly" apart from "this is
|
|
||||||
/// an unrecognized/stale pointer that must not be touched at all"
|
|
||||||
/// (see TCPSession::tryGet()'s own comment on why dynamic_cast
|
|
||||||
/// can't make that distinction safely). Registering `this` once,
|
|
||||||
/// in the constructor, into this tiny set is that signal - it's
|
|
||||||
/// checked by address only, never dereferenced for the check
|
|
||||||
/// itself.
|
|
||||||
///
|
|
||||||
|
|
||||||
static bool isKnownListeningSocket(void *ptr) {
|
|
||||||
std::lock_guard<std::mutex> guard(listeningSocketsMutex());
|
|
||||||
return listeningSockets().count(ptr) > 0;
|
|
||||||
}
|
|
||||||
|
|
||||||
private:
|
private:
|
||||||
TCPSession *accept();
|
TCPSession *accept();
|
||||||
|
std::mutex lock;
|
||||||
static std::mutex &listeningSocketsMutex() {
|
|
||||||
static std::mutex m;
|
|
||||||
return m;
|
|
||||||
}
|
|
||||||
static std::set<void *> &listeningSockets() {
|
|
||||||
static std::set<void *> s;
|
|
||||||
return s;
|
|
||||||
}
|
|
||||||
};
|
};
|
||||||
|
|
||||||
}
|
}
|
||||||
|
|||||||
@@ -6,38 +6,15 @@
|
|||||||
|
|
||||||
namespace core {
|
namespace core {
|
||||||
|
|
||||||
TCPSession::TCPSession(EPoll &ePoll, std::string text) : TCPSocket(ePoll, text) {
|
TCPSession::TCPSession(EPoll &ePoll, TCPServer &server, std::string text) : TCPSocket(ePoll, text), server(server) {
|
||||||
// uuid_t is 16 raw binary bytes, not a NUL-terminated string -
|
uuid_t uuid;
|
||||||
// streaming it directly (the old code did `<< uuidObject`) hits
|
uuid_generate(uuid);
|
||||||
// libstdc++'s unsigned-char* operator<< overload, which treats its
|
alias = coreutils::MString((char *)uuid, 26);
|
||||||
// argument as a C-string and calls strlen() on it: a real
|
|
||||||
// stack-buffer-overflow read past the 16-byte local, confirmed via
|
|
||||||
// AddressSanitizer under concurrent load. Separately, `alias` was
|
|
||||||
// being pointed at `uuidObject` itself - a stack-local array that is
|
|
||||||
// destroyed the instant this constructor returns, leaving `alias` a
|
|
||||||
// dangling pointer for the rest of the session's life (used by
|
|
||||||
// compareAlias() for session identity). uuid_unparse() into the
|
|
||||||
// `uuid` member (declared for exactly this - see its doc comment)
|
|
||||||
// fixes both: a real NUL-terminated string safe to log, backed by
|
|
||||||
// storage that lives as long as the TCPSession does.
|
|
||||||
uuid_t uuidObject;
|
|
||||||
uuid_generate(uuidObject);
|
|
||||||
uuid_unparse(uuidObject, uuid);
|
|
||||||
coreutils::Log(coreutils::LOG_DEBUG_1) << uuid;
|
|
||||||
alias = (void *)uuid;
|
|
||||||
}
|
|
||||||
|
|
||||||
TCPSession::TCPSession(EPoll &ePoll, TCPServer *server, std::string text) : TCPSocket(ePoll, server->ctx, text), server(server) {
|
|
||||||
uuid_t uuidObject;
|
|
||||||
uuid_generate(uuidObject);
|
|
||||||
uuid_unparse(uuidObject, uuid);
|
|
||||||
coreutils::Log(coreutils::LOG_DEBUG_1) << uuid;
|
|
||||||
alias = (void *)uuid;
|
|
||||||
}
|
}
|
||||||
|
|
||||||
TCPSession::~TCPSession() {
|
TCPSession::~TCPSession() {
|
||||||
server->removeFromSessionList(this);
|
server.removeFromSessionList(this);
|
||||||
server->subscriptions.removeSessionSubscriptions(*this);
|
server.subscriptions.removeSessionSubscriptions(*this);
|
||||||
}
|
}
|
||||||
|
|
||||||
void TCPSession::output(std::stringstream &data) {
|
void TCPSession::output(std::stringstream &data) {
|
||||||
@@ -45,34 +22,14 @@ namespace core {
|
|||||||
}
|
}
|
||||||
|
|
||||||
void TCPSession::protocol(coreutils::ZString &data) {
|
void TCPSession::protocol(coreutils::ZString &data) {
|
||||||
// The data.getLength() != 0 guard alone silently swallowed every
|
if (data.getLength() != 0)
|
||||||
// blank line a client sent, before it ever reached
|
if (!server.commands.processRequest(data, *this))
|
||||||
// CommandList::processRequest() - fine for ordinary command
|
|
||||||
// dispatch (a stray blank line between commands isn't a command),
|
|
||||||
// but CommandList::processRequest() already special-cases
|
|
||||||
// session.grab != NULL to hand the line to the grabbed handler
|
|
||||||
// unconditionally, blank or not - a handler mid-grabInput() (e.g.
|
|
||||||
// __SMTP_DATA reading a message body, or an IMAP APPEND literal)
|
|
||||||
// depends on seeing blank lines as real content, not commands.
|
|
||||||
// With the outer guard unconditional, every message body's
|
|
||||||
// header/body separator - and every blank line within the body
|
|
||||||
// itself - was getting dropped before that handler ever saw it.
|
|
||||||
// Confirmed via a delivered test message with zero CRLFCRLF
|
|
||||||
// sequences anywhere in it, which is what first exposed this.
|
|
||||||
if (grab != NULL || data.getLength() != 0) {
|
|
||||||
if (!server->commands.processRequest(data, *this)) {
|
|
||||||
coreutils::Log(coreutils::LOG_DEBUG_1) << "Received data could not be parsed: " << data.str();
|
coreutils::Log(coreutils::LOG_DEBUG_1) << "Received data could not be parsed: " << data.str();
|
||||||
}
|
}
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
bool TCPSession::compareAlias(void *alias) {
|
// bool TCPSession::compareAlias(coreutils::MString alias) {
|
||||||
return this->alias = alias;
|
// return this->alias == alias;
|
||||||
}
|
// }
|
||||||
|
|
||||||
void TCPSession::outputAlias(std::stringstream &out) {
|
|
||||||
out << alias;
|
|
||||||
}
|
|
||||||
|
|
||||||
void TCPSession::onRegistered() {
|
void TCPSession::onRegistered() {
|
||||||
onConnected();
|
onConnected();
|
||||||
@@ -83,6 +40,43 @@ namespace core {
|
|||||||
|
|
||||||
void TCPSession::onConnected() {}
|
void TCPSession::onConnected() {}
|
||||||
|
|
||||||
|
void TCPSession::onDataReceived(coreutils::ZString &data) {
|
||||||
|
if (data.getLength() > 0) {
|
||||||
|
lineBuffer = (char *)realloc(lineBuffer, lineBufferSize + data.getLength());
|
||||||
|
memcpy(lineBuffer + lineBufferSize, data.getData(), data.getLength());
|
||||||
|
lineBufferSize += data.getLength();
|
||||||
|
while (lineBufferSize > 0) {
|
||||||
|
if (blockSize == 0) {
|
||||||
|
lineLength = strcspn(lineBuffer, "\r\n");
|
||||||
|
if (lineLength == lineBufferSize)
|
||||||
|
break;
|
||||||
|
coreutils::ZString zLine(lineBuffer, lineLength);
|
||||||
|
onLineReceived(zLine);
|
||||||
|
if (lineBuffer[lineLength] == '\r')
|
||||||
|
++lineLength;
|
||||||
|
if (lineBuffer[lineLength] == '\n')
|
||||||
|
++lineLength;
|
||||||
|
lineBufferSize -= lineLength;
|
||||||
|
if (lineBufferSize > 0)
|
||||||
|
memmove(lineBuffer, lineBuffer + lineLength, lineBufferSize);
|
||||||
|
lineBuffer = (char *)realloc(lineBuffer, lineBufferSize);
|
||||||
|
}
|
||||||
|
else if (lineBufferSize >= blockLength) {
|
||||||
|
coreutils::ZString zBlock(lineBuffer, blockLength);
|
||||||
|
onBlockReceived(zBlock);
|
||||||
|
lineBufferSize -= blockLength;
|
||||||
|
if (lineBufferSize > 0)
|
||||||
|
memmove(lineBuffer, lineBuffer + blockLength, lineBufferSize);
|
||||||
|
lineBuffer = (char *)realloc(lineBuffer, lineBufferSize);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
void TCPSession::setBlockSize(int blockSize) {
|
||||||
|
this->blockSize = blockSize;
|
||||||
|
}
|
||||||
|
|
||||||
void TCPSession::onLineReceived(coreutils::ZString &line) {
|
void TCPSession::onLineReceived(coreutils::ZString &line) {
|
||||||
protocol(line);
|
protocol(line);
|
||||||
send();
|
send();
|
||||||
@@ -90,6 +84,12 @@ namespace core {
|
|||||||
shutdown("termination requested");
|
shutdown("termination requested");
|
||||||
}
|
}
|
||||||
|
|
||||||
|
void TCPSession::onBlockReceived(coreutils::ZString &block) {
|
||||||
|
coreutils::Log(coreutils::LOG_DEBUG_3) << "[" << block.getLength() << "]";
|
||||||
|
if (term)
|
||||||
|
shutdown("termination requested");
|
||||||
|
}
|
||||||
|
|
||||||
void TCPSession::send() {
|
void TCPSession::send() {
|
||||||
if (out.tellp() > 0)
|
if (out.tellp() > 0)
|
||||||
write(out.str());
|
write(out.str());
|
||||||
|
|||||||
@@ -1,12 +1,10 @@
|
|||||||
#ifndef __Session_h__
|
#ifndef __Session_h__
|
||||||
#define __Session_h__
|
#define __Session_h__
|
||||||
|
|
||||||
|
#include "TCPLineBufferParser.h"
|
||||||
|
#include "MString.h"
|
||||||
#include "SessionFilter.h"
|
#include "SessionFilter.h"
|
||||||
#include "TCPSocket.h"
|
#include "TCPSocket.h"
|
||||||
# include <map>
|
|
||||||
# include <memory>
|
|
||||||
# include <mutex>
|
|
||||||
# include <sstream>
|
|
||||||
|
|
||||||
namespace core {
|
namespace core {
|
||||||
|
|
||||||
@@ -25,134 +23,14 @@ namespace core {
|
|||||||
///
|
///
|
||||||
///
|
///
|
||||||
|
|
||||||
class TCPSession : public TCPSocket, public std::enable_shared_from_this<TCPSession> {
|
class TCPSession : public TCPLineBufferParser {
|
||||||
|
|
||||||
public:
|
public:
|
||||||
|
|
||||||
///
|
|
||||||
/// pin() safely upgrades a raw TCPSession* (as stored in
|
|
||||||
/// Subscription::subscribers, ZephoraServer's own
|
|
||||||
/// sessionsByPlayerName, GroupManager's membership lists, etc.)
|
|
||||||
/// into a real, ownership-extending shared_ptr before it's used.
|
|
||||||
///
|
|
||||||
/// The core problem this solves: every crash found and root-caused
|
|
||||||
/// this session (SubscriptionManager.cpp/TCPServer.cpp/Socket.cpp's
|
|
||||||
/// own fixes) was the same shape - one thread calling a method
|
|
||||||
/// (write(), a destructor) on a TCPSession* while another thread
|
|
||||||
/// concurrently deleted that same object, because nothing actually
|
|
||||||
/// guaranteed the object stayed alive for the duration of the
|
|
||||||
/// call. Mutex-based fixes at each individual call site kept
|
|
||||||
/// narrowing the window without fully closing it, and a mutex
|
|
||||||
/// around every write() call also isn't what the fifo-based
|
|
||||||
/// design (see Socket::write()) was going for in the first place -
|
|
||||||
/// no thread should have to block just to hand off a message.
|
|
||||||
///
|
|
||||||
/// TCPServer::sessions now holds the one real, strong-owning
|
|
||||||
/// shared_ptr<TCPSession> per live session (see its own comment).
|
|
||||||
/// Every OTHER place that stores a TCPSession* for later use is a
|
|
||||||
/// plain observer, not an owner - it must call pin() and check for
|
|
||||||
/// null immediately before touching the object, rather than
|
|
||||||
/// dereferencing the raw pointer directly. pin() returns nullptr
|
|
||||||
/// (instead of throwing, unlike raw shared_from_this()) once the
|
|
||||||
/// object's last real owner has let go and it's on its way out -
|
|
||||||
/// at that point there is nothing left to safely do with it, and
|
|
||||||
/// the caller should just skip it as if it were never there,
|
|
||||||
/// exactly like a stale/already-unsubscribed entry.
|
|
||||||
///
|
|
||||||
/// This adds no blocking anywhere: shared_ptr's own refcounting is
|
|
||||||
/// a couple of atomic increments, not a mutex - the actual
|
|
||||||
/// deletion still only ever happens once, whenever the last
|
|
||||||
/// outstanding shared_ptr (held by TCPServer::sessions, or
|
|
||||||
/// briefly by whichever thread(s) are mid-call via their own
|
|
||||||
/// pin()'d reference) goes out of scope.
|
|
||||||
///
|
|
||||||
|
|
||||||
std::shared_ptr<TCPSession> pin() {
|
|
||||||
try { return shared_from_this(); }
|
|
||||||
catch (const std::bad_weak_ptr &) { return nullptr; }
|
|
||||||
}
|
|
||||||
|
|
||||||
///
|
|
||||||
/// A second, distinct safety problem pin()/shared_from_this()
|
|
||||||
/// alone cannot solve: Thread::run()'s epoll dispatch loop starts
|
|
||||||
/// from a raw `void*` (epoll_event.data.ptr) whose TYPE isn't known
|
|
||||||
/// yet - the original code cast it straight to `Socket*` and
|
|
||||||
/// called virtual methods on it; an early version of this fix used
|
|
||||||
/// dynamic_cast<TCPSession*> to identify session objects before
|
|
||||||
/// calling pin(). Both of those REQUIRE reading the pointed-to
|
|
||||||
/// object's own memory (its vtable, at minimum) to work at all -
|
|
||||||
/// confirmed live via AddressSanitizer that dynamic_cast on a
|
|
||||||
/// stale pointer (one epoll handed out for a TCPSession that
|
|
||||||
/// something else had already fully destroyed and freed on another
|
|
||||||
/// thread) segfaults outright, before pin()'s own safety logic
|
|
||||||
/// ever gets a chance to run.
|
|
||||||
///
|
|
||||||
/// tryGet() sidesteps this entirely: it looks the raw pointer VALUE
|
|
||||||
/// up as a key in a plain map, and only ever touches a weak_ptr's
|
|
||||||
/// own control block (a separate heap allocation that outlives the
|
|
||||||
/// TCPSession object itself for as long as any weak_ptr or
|
|
||||||
/// shared_ptr referencing it exists) - never the TCPSession's own
|
|
||||||
/// memory - to decide whether it's still valid. That makes it safe
|
|
||||||
/// to call on ANY raw pointer value, including ones that turn out
|
|
||||||
/// to be completely unrelated to this registry (never a
|
|
||||||
/// TCPSession, e.g. a listening TCPServer/ConsoleServer - see
|
|
||||||
/// TCPServer::isKnownListeningSocket() for how Thread::run()
|
|
||||||
/// distinguishes that case) or ones pointing at freed memory.
|
|
||||||
///
|
|
||||||
/// registerLive()/unregisterLive() are called exactly once each,
|
|
||||||
/// by TCPServer::connectionRequest() and removeFromSessionList()
|
|
||||||
/// respectively - see their own comments for why those are the
|
|
||||||
/// right, and only, call sites.
|
|
||||||
///
|
|
||||||
|
|
||||||
static void registerLive(TCPSession *raw, std::shared_ptr<TCPSession> owner) {
|
|
||||||
std::lock_guard<std::mutex> guard(registryMutex());
|
|
||||||
registry()[raw] = owner;
|
|
||||||
}
|
|
||||||
|
|
||||||
static void unregisterLive(TCPSession *raw) {
|
|
||||||
std::lock_guard<std::mutex> guard(registryMutex());
|
|
||||||
registry().erase(raw);
|
|
||||||
}
|
|
||||||
|
|
||||||
static std::shared_ptr<TCPSession> tryGet(void *raw) {
|
|
||||||
std::lock_guard<std::mutex> guard(registryMutex());
|
|
||||||
auto it = registry().find((TCPSession *)raw);
|
|
||||||
if (it == registry().end())
|
|
||||||
return nullptr;
|
|
||||||
return it->second.lock();
|
|
||||||
}
|
|
||||||
|
|
||||||
private:
|
|
||||||
// Function-local statics (constructed on first use, in whichever
|
|
||||||
// translation unit/thread reaches them first, thread-safely per
|
|
||||||
// C++11's own guarantee for static local initialization) instead
|
|
||||||
// of ordinary static data members - avoids needing a .cpp
|
|
||||||
// definition for these two and any static-initialization-order
|
|
||||||
// concerns with other translation units, since TCPSession.h is
|
|
||||||
// included widely.
|
|
||||||
static std::mutex ®istryMutex() {
|
|
||||||
static std::mutex m;
|
|
||||||
return m;
|
|
||||||
}
|
|
||||||
static std::map<TCPSession *, std::weak_ptr<TCPSession>> ®istry() {
|
|
||||||
static std::map<TCPSession *, std::weak_ptr<TCPSession>> r;
|
|
||||||
return r;
|
|
||||||
}
|
|
||||||
|
|
||||||
public:
|
|
||||||
|
|
||||||
///
|
///
|
||||||
///
|
///
|
||||||
///
|
///
|
||||||
|
|
||||||
TCPSession(EPoll &ePoll, std::string text = "");
|
TCPSession(EPoll &ePoll, TCPServer &server, std::string text = "");
|
||||||
|
|
||||||
///
|
|
||||||
///
|
|
||||||
///
|
|
||||||
|
|
||||||
TCPSession(EPoll &ePoll, TCPServer *server, std::string text = "");
|
|
||||||
|
|
||||||
///
|
///
|
||||||
///
|
///
|
||||||
@@ -178,11 +56,10 @@ namespace core {
|
|||||||
void terminate();
|
void terminate();
|
||||||
|
|
||||||
///
|
///
|
||||||
/// This is a pointer to the server that was used to 'spawn' the server connection.
|
///
|
||||||
/// If the session is just client side connection this pointer should be NULL;
|
|
||||||
///
|
///
|
||||||
|
|
||||||
TCPServer *server;
|
TCPServer &server;
|
||||||
|
|
||||||
///
|
///
|
||||||
/// Use out to send data to the session socket or other session sockets.
|
/// Use out to send data to the session socket or other session sockets.
|
||||||
@@ -199,20 +76,20 @@ namespace core {
|
|||||||
char uuid[37];
|
char uuid[37];
|
||||||
|
|
||||||
///
|
///
|
||||||
/// alias is a void pointer that can be set to point to any object that identifies
|
/// alias is a MString that can be set to any string of characters that identifies
|
||||||
/// this session uniquely. Using this approach, inheriting objects can determine
|
/// this session uniquely. Alias's should be unique between sessions.
|
||||||
/// how it knows the contacts that this server manages.
|
|
||||||
///
|
///
|
||||||
|
|
||||||
void *alias;
|
coreutils::MString alias;
|
||||||
|
///
|
||||||
|
///
|
||||||
|
///
|
||||||
|
|
||||||
///
|
///
|
||||||
///
|
///
|
||||||
///
|
///
|
||||||
|
|
||||||
virtual bool compareAlias(void *alias);
|
// bool compareAlias(coreutils::MString alias);
|
||||||
|
|
||||||
virtual void outputAlias(std::stringstream &out);
|
|
||||||
|
|
||||||
protected:
|
protected:
|
||||||
///
|
///
|
||||||
@@ -221,6 +98,14 @@ namespace core {
|
|||||||
|
|
||||||
virtual void onRegistered() override;
|
virtual void onRegistered() override;
|
||||||
|
|
||||||
|
///
|
||||||
|
/// Override this method to receive data directly from the socket as data is
|
||||||
|
/// received. If you need data split by line termination characters then
|
||||||
|
/// override the onLineReceived method instead.
|
||||||
|
///
|
||||||
|
|
||||||
|
void onDataReceived(coreutils::ZString &data) override;
|
||||||
|
|
||||||
///
|
///
|
||||||
/// Override the onLineReceived method to receive a string of characters that
|
/// Override the onLineReceived method to receive a string of characters that
|
||||||
/// represents a single line of data terminated by a LF or CRLF. If onDataReceived
|
/// represents a single line of data terminated by a LF or CRLF. If onDataReceived
|
||||||
@@ -228,14 +113,6 @@ namespace core {
|
|||||||
/// this method explicitly using the class and member name.
|
/// this method explicitly using the class and member name.
|
||||||
///
|
///
|
||||||
|
|
||||||
virtual void onLineReceived(coreutils::ZString &line) override;
|
|
||||||
|
|
||||||
///
|
|
||||||
/// This method is called from within the protocol method when protocol is called
|
|
||||||
/// on the initial connection where the data is an empty string. Use this method
|
|
||||||
/// to deliver a message to the connection upon connection.
|
|
||||||
///
|
|
||||||
|
|
||||||
virtual void onConnected();
|
virtual void onConnected();
|
||||||
|
|
||||||
///
|
///
|
||||||
@@ -250,9 +127,22 @@ namespace core {
|
|||||||
|
|
||||||
virtual void protocol(coreutils::ZString &data);
|
virtual void protocol(coreutils::ZString &data);
|
||||||
|
|
||||||
private:
|
///
|
||||||
std::mutex mtx;
|
/// Use setBlockSize to set the amount of data that should be read at once from the
|
||||||
|
/// session data buffer.
|
||||||
|
/// If this value is set to 0 then the data will be retrieved
|
||||||
|
///
|
||||||
|
|
||||||
|
void setBlockSize(int size = 0);
|
||||||
|
|
||||||
|
private:
|
||||||
|
char *lineBuffer = NULL;
|
||||||
|
int lineBufferSize = 0;
|
||||||
|
int lineLength = 0;
|
||||||
|
int blockLength = 0;
|
||||||
|
std::mutex mtx;
|
||||||
|
bool term = false;
|
||||||
|
int blockSize = 0;
|
||||||
};
|
};
|
||||||
|
|
||||||
}
|
}
|
||||||
|
|||||||
@@ -0,0 +1,85 @@
|
|||||||
|
#include "TCPSession2.h"
|
||||||
|
#include "Exception.h"
|
||||||
|
#include "Log.h"
|
||||||
|
|
||||||
|
namespace core {
|
||||||
|
|
||||||
|
TCPSession2::TCPSession2(EPoll &ePoll, std::string text) : TCPSocket(ePoll, text) {}
|
||||||
|
|
||||||
|
TCPSession2::~TCPSession2() {}
|
||||||
|
|
||||||
|
void TCPSession2::output(std::stringstream &data) {
|
||||||
|
data << "|" << ipAddress.getClientAddressAndPort();
|
||||||
|
}
|
||||||
|
|
||||||
|
void TCPSession2::protocol(coreutils::ZString &data) {}
|
||||||
|
|
||||||
|
void TCPSession2::onRegistered() {
|
||||||
|
onConnected();
|
||||||
|
send();
|
||||||
|
if(term)
|
||||||
|
TCPSocket::shutdown("termination requested");
|
||||||
|
}
|
||||||
|
|
||||||
|
void TCPSession2::onConnected() {}
|
||||||
|
|
||||||
|
void TCPSession2::onDataReceived(coreutils::ZString &data) {
|
||||||
|
if(data.getLength() > 0) {
|
||||||
|
lineBuffer = (char *)realloc(lineBuffer, lineBufferSize + data.getLength());
|
||||||
|
memcpy(lineBuffer + lineBufferSize, data.getData(), data.getLength());
|
||||||
|
lineBufferSize += data.getLength();
|
||||||
|
while(lineBufferSize > 0) {
|
||||||
|
if(blockSize == 0) {
|
||||||
|
lineLength = strcspn(lineBuffer, "\r\n");
|
||||||
|
if(lineLength == lineBufferSize)
|
||||||
|
break;
|
||||||
|
coreutils::ZString zLine(lineBuffer, lineLength);
|
||||||
|
onLineReceived(zLine);
|
||||||
|
if(lineBuffer[lineLength] == '\r')
|
||||||
|
++lineLength;
|
||||||
|
if(lineBuffer[lineLength] == '\n')
|
||||||
|
++lineLength;
|
||||||
|
lineBufferSize -= lineLength;
|
||||||
|
if(lineBufferSize > 0)
|
||||||
|
memmove(lineBuffer, lineBuffer + lineLength, lineBufferSize);
|
||||||
|
lineBuffer = (char *)realloc(lineBuffer, lineBufferSize);
|
||||||
|
} else if(lineBufferSize >= blockLength) {
|
||||||
|
coreutils::ZString zBlock(lineBuffer, blockLength);
|
||||||
|
onBlockReceived(zBlock);
|
||||||
|
lineBufferSize -= blockLength;
|
||||||
|
if(lineBufferSize > 0)
|
||||||
|
memmove(lineBuffer, lineBuffer + blockLength, lineBufferSize);
|
||||||
|
lineBuffer = (char *)realloc(lineBuffer, lineBufferSize);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
void TCPSession2::setBlockSize(int blockSize) {
|
||||||
|
this->blockSize = blockSize;
|
||||||
|
}
|
||||||
|
|
||||||
|
void TCPSession2::onLineReceived(coreutils::ZString &line) {
|
||||||
|
protocol(line);
|
||||||
|
send();
|
||||||
|
if(term)
|
||||||
|
TCPSocket::shutdown("termination requested");
|
||||||
|
}
|
||||||
|
|
||||||
|
void TCPSession2::onBlockReceived(coreutils::ZString &block) {
|
||||||
|
coreutils::Log(coreutils::LOG_DEBUG_3) << "[" << block.getLength() << "]";
|
||||||
|
if(term)
|
||||||
|
TCPSocket::shutdown("termination requested");
|
||||||
|
}
|
||||||
|
|
||||||
|
void TCPSession2::send() {
|
||||||
|
if(out.tellp() > 0)
|
||||||
|
TCPSocket::write(out.str());
|
||||||
|
out.str("");
|
||||||
|
}
|
||||||
|
|
||||||
|
void TCPSession2::terminate() {
|
||||||
|
term = true;
|
||||||
|
}
|
||||||
|
|
||||||
|
}
|
||||||
@@ -0,0 +1,139 @@
|
|||||||
|
#ifndef __TCPSession2_h__
|
||||||
|
# define __TCPSession2_h__
|
||||||
|
|
||||||
|
#include "TCPSocket.h"
|
||||||
|
#include "Timer.h"
|
||||||
|
#include "SessionFilter.h"
|
||||||
|
|
||||||
|
namespace core {
|
||||||
|
|
||||||
|
class Command;
|
||||||
|
class TCPServer;
|
||||||
|
|
||||||
|
///
|
||||||
|
/// TCPSession2
|
||||||
|
///
|
||||||
|
/// TCPSession defines the nature of the interaction with the client
|
||||||
|
/// and stores persistent data for a defined session. TCPSession objects
|
||||||
|
/// are not sockets but instead provide a communications control
|
||||||
|
/// mechanism. Protocol conversations are provided through extensions
|
||||||
|
/// from this object.
|
||||||
|
///
|
||||||
|
/// TCPSession2 is designed to be 'connected' instead of being served
|
||||||
|
/// by a server.
|
||||||
|
///
|
||||||
|
|
||||||
|
class TCPSession2 : public TCPSocket {
|
||||||
|
|
||||||
|
public:
|
||||||
|
|
||||||
|
///
|
||||||
|
///
|
||||||
|
///
|
||||||
|
|
||||||
|
TCPSession2(EPoll &ePoll, std::string text = "");
|
||||||
|
|
||||||
|
///
|
||||||
|
///
|
||||||
|
///
|
||||||
|
|
||||||
|
virtual ~TCPSession2();
|
||||||
|
|
||||||
|
Command *grab = NULL;
|
||||||
|
|
||||||
|
virtual void output(std::stringstream &data);
|
||||||
|
|
||||||
|
///
|
||||||
|
/// The send method is used to output the contents of the out stream
|
||||||
|
/// to the session containing the stream.
|
||||||
|
///
|
||||||
|
|
||||||
|
void send();
|
||||||
|
|
||||||
|
///
|
||||||
|
/// Use this method to terminate this TCPSession.
|
||||||
|
///
|
||||||
|
|
||||||
|
void terminate();
|
||||||
|
|
||||||
|
///
|
||||||
|
/// Use out to send data to the session socket or other session sockets.
|
||||||
|
///
|
||||||
|
|
||||||
|
std::stringstream out;
|
||||||
|
|
||||||
|
protected:
|
||||||
|
|
||||||
|
///
|
||||||
|
///
|
||||||
|
///
|
||||||
|
|
||||||
|
virtual void onRegistered() override;
|
||||||
|
|
||||||
|
///
|
||||||
|
/// Override this method to receive data directly from the socket as data is
|
||||||
|
/// received. If you need data split by line termination characters then
|
||||||
|
/// override the onLineReceived method instead.
|
||||||
|
///
|
||||||
|
virtual void onDataReceived(coreutils::ZString &data) override;
|
||||||
|
|
||||||
|
///
|
||||||
|
/// Override the onLineReceived method to receive a string of characters that
|
||||||
|
/// represents a single line of data terminated by a LF or CRLF. If onDataReceived
|
||||||
|
/// was overriden this method will not be called unless the onDataReceived calls
|
||||||
|
/// this method explicitly using the class and member name.
|
||||||
|
///
|
||||||
|
|
||||||
|
virtual void onLineReceived(coreutils::ZString &line);
|
||||||
|
|
||||||
|
///
|
||||||
|
/// Override the onBlockReceived method to receive a string of characters that
|
||||||
|
/// represents a single block of data of length determined by the block length value. If
|
||||||
|
/// onDataReceived was overriden this method will not be called unless the onDataReceived
|
||||||
|
/// calls this method explicitly using the class and member name.
|
||||||
|
///
|
||||||
|
|
||||||
|
virtual void onBlockReceived(coreutils::ZString &block);
|
||||||
|
|
||||||
|
///
|
||||||
|
/// This method is called from within the protocol method when protocol is called
|
||||||
|
/// on the initial connection where the data is an empty string. Use this method
|
||||||
|
/// to deliver a message to the connection upon connection.
|
||||||
|
///
|
||||||
|
|
||||||
|
virtual void onConnected();
|
||||||
|
|
||||||
|
///
|
||||||
|
/// Override the protocol method to manage and control the session communications
|
||||||
|
/// in your inherited session. If you do not override this method then the Session
|
||||||
|
/// default will process the 'commands' added to the server object using the
|
||||||
|
/// processRequest method on the session input.
|
||||||
|
///
|
||||||
|
/// When data is received within the session two modes are available to pass the
|
||||||
|
/// data through the protocol method: LINE or BLOCK.
|
||||||
|
///
|
||||||
|
|
||||||
|
virtual void protocol(coreutils::ZString &data);
|
||||||
|
|
||||||
|
///
|
||||||
|
/// Use setBlockSize to set the amount of data that should be read at once from the
|
||||||
|
/// session data buffer.
|
||||||
|
/// If this value is set to 0 then the data will be retrieved
|
||||||
|
///
|
||||||
|
|
||||||
|
void setBlockSize(int size = 0);
|
||||||
|
|
||||||
|
private:
|
||||||
|
char *lineBuffer = NULL;
|
||||||
|
int lineBufferSize = 0;
|
||||||
|
int lineLength = 0;
|
||||||
|
int blockLength = 0;
|
||||||
|
std::mutex mtx;
|
||||||
|
bool term = false;
|
||||||
|
int blockSize = 0;
|
||||||
|
|
||||||
|
};
|
||||||
|
|
||||||
|
}
|
||||||
|
|
||||||
|
#endif
|
||||||
@@ -3,8 +3,6 @@
|
|||||||
#include "Log.h"
|
#include "Log.h"
|
||||||
#include "Exception.h"
|
#include "Exception.h"
|
||||||
#include "errno.h"
|
#include "errno.h"
|
||||||
#include <algorithm>
|
|
||||||
#include <cstring>
|
|
||||||
|
|
||||||
namespace core {
|
namespace core {
|
||||||
|
|
||||||
@@ -12,10 +10,6 @@ namespace core {
|
|||||||
|
|
||||||
TCPSocket::TCPSocket(EPoll &ePoll, std::string text) : Socket(ePoll, text) {}
|
TCPSocket::TCPSocket(EPoll &ePoll, std::string text) : Socket(ePoll, text) {}
|
||||||
|
|
||||||
TCPSocket::TCPSocket(EPoll &ePoll, TLSInfo *tlsInfo, std::string text) : Socket(ePoll, text), TLS(tlsInfo), tlsInfo(tlsInfo) {}
|
|
||||||
|
|
||||||
TCPSocket::TCPSocket(EPoll &ePoll, SSL_CTX *ctx, std::string text) : Socket(ePoll, text), TLS(ctx) {}
|
|
||||||
|
|
||||||
TCPSocket::~TCPSocket() {}
|
TCPSocket::~TCPSocket() {}
|
||||||
|
|
||||||
void TCPSocket::connect(IPAddress &address) {
|
void TCPSocket::connect(IPAddress &address) {
|
||||||
@@ -29,162 +23,5 @@ namespace core {
|
|||||||
out << "|" << ipAddress.getClientAddressAndPort();
|
out << "|" << ipAddress.getClientAddressAndPort();
|
||||||
}
|
}
|
||||||
|
|
||||||
void TCPSocket::receiveData(coreutils::ZString &buffer) {
|
|
||||||
// Dispatch on `ctx`, not `tlsInfo` - the SSL_CTX*-taking constructor
|
|
||||||
// (used for every accepted TCPSession) never sets `tlsInfo` at all,
|
|
||||||
// leaving it as uninitialized garbage that intermittently (whenever
|
|
||||||
// that garbage happened to be non-zero) routed a plain, non-TLS
|
|
||||||
// session's data through SSL_read()/SSL_write() against an
|
|
||||||
// uninitialized SSL*, segfaulting inside libssl. `ctx` is the
|
|
||||||
// reliable signal: real and non-NULL for an actual TLS server/
|
|
||||||
// session (set in TLS::createContext(), inherited by sessions via
|
|
||||||
// TLS(SSL_CTX*)), safely NULL by default otherwise (see TLS.h).
|
|
||||||
if(ctx) {
|
|
||||||
int len;
|
|
||||||
{
|
|
||||||
// Held only around the raw SSL_read call - released before
|
|
||||||
// onDataReceived() so the request-handling chain it triggers
|
|
||||||
// (which reaches Socket::write()/outlock) never runs while
|
|
||||||
// ioLock is held. See ioLock's own doc comment in TCPSocket.h.
|
|
||||||
std::lock_guard<std::mutex> ioGuard(ioLock);
|
|
||||||
len = TLS::receiveData(buffer);
|
|
||||||
}
|
|
||||||
if(len >= 0) {
|
|
||||||
coreutils::ZString zbuffer(buffer.getData(), len);
|
|
||||||
onDataReceived(zbuffer);
|
|
||||||
}
|
|
||||||
} else {
|
|
||||||
Socket::receiveData(buffer);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
int TCPSocket::sendData(const char *data, int length) {
|
|
||||||
if(ctx) {
|
|
||||||
std::lock_guard<std::mutex> ioGuard(ioLock);
|
|
||||||
return TLS::sendData(data, length);
|
|
||||||
} else
|
|
||||||
return Socket::sendData(data, length);
|
|
||||||
}
|
|
||||||
|
|
||||||
bool TCPSocket::sendNeedsRead() {
|
|
||||||
return ctx && lastSendWantedRead;
|
|
||||||
}
|
|
||||||
|
|
||||||
void TCPSocket::performTLSHandshake() {
|
|
||||||
// registerSocket() makes this fd eligible for epoll dispatch to ANY
|
|
||||||
// worker thread immediately. ioLock MUST be acquired BEFORE that
|
|
||||||
// call, not after - a first attempt here took the lock AFTER
|
|
||||||
// registerSocket(), which still left a real window: another thread
|
|
||||||
// could win the race for ioLock (via a read/write event on this
|
|
||||||
// same brand-new connection) and have SSL_read/SSL_write silently
|
|
||||||
// complete the handshake on OpenSSL's own initiative, and only
|
|
||||||
// THEN would this thread acquire ioLock and run its own, now
|
|
||||||
// redundant, acceptSocket() (SSL_accept) against an already-
|
|
||||||
// negotiated SSL object - confirmed via gdb `thread apply all bt`
|
|
||||||
// during a live crash: one thread mid-SSL_read, a second thread
|
|
||||||
// simultaneously inside performTLSHandshake, both on the identical
|
|
||||||
// object address. Acquiring ioLock first closes that window
|
|
||||||
// entirely: no other thread can even begin touching this
|
|
||||||
// connection's SSL object until this thread's own handshake
|
|
||||||
// attempt has released the lock. acceptSocket() only attempts
|
|
||||||
// SSL_accept() once and may leave the handshake incomplete
|
|
||||||
// (WANT_READ/WANT_WRITE) - that's fine, OpenSSL transparently
|
|
||||||
// finishes a pending handshake on the next SSL_read/SSL_write,
|
|
||||||
// which ioLock already serializes against everything else.
|
|
||||||
std::lock_guard<std::mutex> ioGuard(ioLock);
|
|
||||||
registerSocket(getDescriptor());
|
|
||||||
acceptSocket();
|
|
||||||
}
|
|
||||||
|
|
||||||
void TCPSocket::onDataReceived(coreutils::ZString &data) {
|
|
||||||
|
|
||||||
if (data.getLength() > 0) {
|
|
||||||
hasReceivedData = true;
|
|
||||||
lineBuffer = (char *)realloc(lineBuffer, lineBufferSize + data.getLength());
|
|
||||||
memcpy(lineBuffer + lineBufferSize, data.getData(), data.getLength());
|
|
||||||
lineBufferSize += data.getLength();
|
|
||||||
while (lineBufferSize > 0) {
|
|
||||||
if (blockSize == 0) {
|
|
||||||
// strcspn() treats its argument as a NUL-terminated C
|
|
||||||
// string and keeps scanning past the end looking for one -
|
|
||||||
// lineBuffer is a raw byte buffer sized via realloc() to
|
|
||||||
// exactly lineBufferSize bytes, with no NUL terminator
|
|
||||||
// appended anywhere. Whenever the buffered data doesn't yet
|
|
||||||
// contain a CRLF (an ordinary, frequent case - a line split
|
|
||||||
// across TCP reads, or mid-way through a long one, e.g. a
|
|
||||||
// large email body), strcspn() read straight past
|
|
||||||
// lineBufferSize into whatever heap memory happened to
|
|
||||||
// follow, hunting for a byte that happened to match '\r',
|
|
||||||
// '\n', or an accidental '\0' - producing a lineLength
|
|
||||||
// larger than the buffer actually holds. Confirmed live via
|
|
||||||
// gdb: SIGSEGV inside a LATER, unrelated realloc() call on
|
|
||||||
// this same lineBuffer, well downstream of where the real
|
|
||||||
// corruption happened (lineBufferSize -= lineLength
|
|
||||||
// underflows when lineLength > lineBufferSize, and that
|
|
||||||
// negative value gets handed to realloc() as a size_t -
|
|
||||||
// realloc(ptr, SIZE_MAX-ish) - during a real inbound SMTP
|
|
||||||
// message with a long quoted-printable line). memchr() is
|
|
||||||
// the bounded equivalent - it never looks past the length
|
|
||||||
// given, so "no CRLF yet" correctly comes back as "not
|
|
||||||
// found" instead of reading off the end of the allocation.
|
|
||||||
char *cr = (char *)memchr(lineBuffer, '\r', lineBufferSize);
|
|
||||||
char *nl = (char *)memchr(lineBuffer, '\n', lineBufferSize);
|
|
||||||
char *found = (cr && nl) ? std::min(cr, nl) : (cr ? cr : nl);
|
|
||||||
lineLength = found ? (int)(found - lineBuffer) : lineBufferSize;
|
|
||||||
if (lineLength == lineBufferSize)
|
|
||||||
break;
|
|
||||||
coreutils::ZString zLine(lineBuffer, lineLength);
|
|
||||||
onLineReceived(zLine);
|
|
||||||
// lineLength < lineBufferSize is guaranteed by the break
|
|
||||||
// above, so this first index is always in bounds; bump
|
|
||||||
// past a lone '\r' only if there's still at least one more
|
|
||||||
// buffered byte to safely check for a following '\n' -
|
|
||||||
// otherwise (a bare trailing '\r' with nothing buffered
|
|
||||||
// after it yet) leave it for the next read to resolve,
|
|
||||||
// rather than reading lineBuffer[lineBufferSize], one past
|
|
||||||
// the allocation.
|
|
||||||
if (lineBuffer[lineLength] == '\r')
|
|
||||||
++lineLength;
|
|
||||||
if (lineLength < lineBufferSize && lineBuffer[lineLength] == '\n')
|
|
||||||
++lineLength;
|
|
||||||
lineBufferSize -= lineLength;
|
|
||||||
if (lineBufferSize > 0)
|
|
||||||
memmove(lineBuffer, lineBuffer + lineLength, lineBufferSize);
|
|
||||||
lineBuffer = (char *)realloc(lineBuffer, lineBufferSize);
|
|
||||||
}
|
|
||||||
else if (lineBufferSize >= blockSize) {
|
|
||||||
coreutils::ZString zBlock(lineBuffer, blockSize);
|
|
||||||
onBlockReceived(zBlock);
|
|
||||||
lineBufferSize -= blockSize;
|
|
||||||
if (lineBufferSize > 0)
|
|
||||||
memmove(lineBuffer, lineBuffer + blockSize, lineBufferSize);
|
|
||||||
lineBuffer = (char *)realloc(lineBuffer, lineBufferSize);
|
|
||||||
}
|
|
||||||
else
|
|
||||||
// Not enough buffered data yet for a full block - stop and
|
|
||||||
// wait for the next read, exactly like the line-mode
|
|
||||||
// branch's own "no complete line yet" break above.
|
|
||||||
// Without this, a block spanning more than one TCP read
|
|
||||||
// (any IMAP APPEND literal bigger than a single read()'s
|
|
||||||
// worth of socket buffer) sends this EPoll worker thread
|
|
||||||
// into an unconditional busy-spin - lineBufferSize never
|
|
||||||
// changes, so the while(lineBufferSize > 0) loop above
|
|
||||||
// never yields back to let more data arrive.
|
|
||||||
break;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
void TCPSocket::onLineReceived(coreutils::ZString &line) {
|
|
||||||
if (term)
|
|
||||||
shutdown("termination requested");
|
|
||||||
}
|
|
||||||
|
|
||||||
void TCPSocket::onBlockReceived(coreutils::ZString &block) {}
|
|
||||||
|
|
||||||
void TCPSocket::setBlockSize(int blockSize) {
|
|
||||||
this->blockSize = blockSize;
|
|
||||||
}
|
|
||||||
|
|
||||||
}
|
}
|
||||||
|
|
||||||
@@ -1,12 +1,9 @@
|
|||||||
|
|
||||||
#ifndef __TCPSocket_h__
|
#ifndef __TCPSocket_h__
|
||||||
#define __TCPSocket_h__
|
#define __TCPSocket_h__
|
||||||
|
|
||||||
#include "Socket.h"
|
|
||||||
#include "TLS.h"
|
|
||||||
#include "TLSInfo.h"
|
|
||||||
#include "IPAddress.h"
|
#include "IPAddress.h"
|
||||||
#include <chrono>
|
#include "Socket.h"
|
||||||
|
#include "includes"
|
||||||
|
|
||||||
namespace core {
|
namespace core {
|
||||||
|
|
||||||
@@ -20,44 +17,13 @@ namespace core {
|
|||||||
/// synchronous data connection.
|
/// synchronous data connection.
|
||||||
///
|
///
|
||||||
|
|
||||||
class TCPSocket : public Socket, public TLS {
|
class TCPSocket : public Socket {
|
||||||
|
|
||||||
public:
|
public:
|
||||||
|
|
||||||
///
|
|
||||||
///
|
|
||||||
///
|
|
||||||
|
|
||||||
TCPSocket(EPoll &ePoll);
|
TCPSocket(EPoll &ePoll);
|
||||||
|
|
||||||
///
|
|
||||||
///
|
|
||||||
///
|
|
||||||
|
|
||||||
TCPSocket(EPoll &ePoll, std::string text);
|
TCPSocket(EPoll &ePoll, std::string text);
|
||||||
|
|
||||||
///
|
|
||||||
///
|
|
||||||
///
|
|
||||||
|
|
||||||
TCPSocket(EPoll &ePoll, TLSInfo *tlsInfo, std::string text);
|
|
||||||
|
|
||||||
///
|
|
||||||
///
|
|
||||||
///
|
|
||||||
|
|
||||||
TCPSocket(EPoll &ePoll, SSL_CTX *ctx, std::string text);
|
|
||||||
|
|
||||||
///
|
|
||||||
///
|
|
||||||
///
|
|
||||||
|
|
||||||
virtual ~TCPSocket();
|
virtual ~TCPSocket();
|
||||||
|
|
||||||
///
|
|
||||||
///
|
|
||||||
///
|
|
||||||
|
|
||||||
void connect(IPAddress &address);
|
void connect(IPAddress &address);
|
||||||
|
|
||||||
IPAddress ipAddress;
|
IPAddress ipAddress;
|
||||||
@@ -65,157 +31,11 @@ namespace core {
|
|||||||
///
|
///
|
||||||
/// The output method is called by a socket session (TCPSession) and
|
/// The output method is called by a socket session (TCPSession) and
|
||||||
/// will output the detail information for the client socket. When extending
|
/// will output the detail information for the client socket. When extending
|
||||||
/// TCPSocket or TCPSession you can override the method to add attributes
|
/// BMATCPSocket or BMASession you can override the method to add attributes
|
||||||
/// to the list.
|
/// to the list.
|
||||||
///
|
///
|
||||||
|
|
||||||
virtual void output(std::stringstream &out);
|
virtual void output(std::stringstream &out);
|
||||||
|
|
||||||
///
|
|
||||||
/// Override this method to receive data directly from the socket as data is
|
|
||||||
/// received. If you need data split by line termination characters then
|
|
||||||
/// override the onLineReceived method instead.
|
|
||||||
///
|
|
||||||
|
|
||||||
virtual void onDataReceived(coreutils::ZString &data) override;
|
|
||||||
|
|
||||||
///
|
|
||||||
/// Override the onLineReceived method to receive a string of characters that
|
|
||||||
/// represents a single line of data terminated by a LF or CRLF. If onDataReceived
|
|
||||||
/// was overriden this method will not be called unless the onDataReceived calls
|
|
||||||
/// this method explicitly using the class and member name.
|
|
||||||
///
|
|
||||||
|
|
||||||
virtual void onLineReceived(coreutils::ZString &line);
|
|
||||||
|
|
||||||
///
|
|
||||||
/// Override the onBlockReceived method to receive a string of characters that
|
|
||||||
/// represents a single block of data of length determined by the block length value. If
|
|
||||||
/// onDataReceived was overriden this method will not be called unless the onDataReceived
|
|
||||||
/// calls this method explicitly using the class and member name.
|
|
||||||
///
|
|
||||||
|
|
||||||
virtual void onBlockReceived(coreutils::ZString &block);
|
|
||||||
|
|
||||||
///
|
|
||||||
/// Use setBlockSize to set the amount of data that should be read at once from the
|
|
||||||
/// session data buffer.
|
|
||||||
/// If this value is set to 0 then the data will be retrieved
|
|
||||||
///
|
|
||||||
|
|
||||||
void setBlockSize(int size = 0);
|
|
||||||
|
|
||||||
///
|
|
||||||
/// Dispatches to TLS::receiveData (SSL_read) when this socket was constructed with a
|
|
||||||
/// TLSInfo/SSL_CTX, otherwise falls back to Socket::receiveData (plain ::read). Needed
|
|
||||||
/// because Socket and TLS both declare receiveData as unrelated sibling methods -
|
|
||||||
/// Socket::receiveData is virtual but TLS::receiveData does not override it, so without
|
|
||||||
/// this explicit override TLS::receiveData would never be reached and encrypted bytes
|
|
||||||
/// would be handed to onDataReceived as if they were plaintext.
|
|
||||||
///
|
|
||||||
|
|
||||||
virtual void receiveData(coreutils::ZString &buffer) override;
|
|
||||||
|
|
||||||
///
|
|
||||||
/// Dispatches to TLS::sendData (SSL_write) when this socket was constructed with a
|
|
||||||
/// TLSInfo/SSL_CTX, otherwise falls back to Socket::sendData (plain ::write). Mirrors
|
|
||||||
/// the receiveData override above for the write path.
|
|
||||||
///
|
|
||||||
|
|
||||||
virtual int sendData(const char *data, int length) override;
|
|
||||||
|
|
||||||
///
|
|
||||||
/// True only when this socket is actually TLS (ctx set) and the
|
|
||||||
/// last sendData() call failed specifically with
|
|
||||||
/// SSL_ERROR_WANT_READ - see TLS::lastSendWantedRead's own doc
|
|
||||||
/// comment for why Socket::writeSocket()/resetSocket() need this.
|
|
||||||
///
|
|
||||||
|
|
||||||
virtual bool sendNeedsRead() override;
|
|
||||||
|
|
||||||
///
|
|
||||||
/// Completes the TLS handshake (SSL_new/SSL_set_fd/SSL_accept) for
|
|
||||||
/// THIS socket's own ctx/descriptor. registerSocket()/acceptSocket()
|
|
||||||
/// are protected TLS members, reachable here via an ordinary
|
|
||||||
/// same-class call - the point of exposing this as a public wrapper
|
|
||||||
/// is so a sibling class (TCPServer, which does not inherit
|
|
||||||
/// TCPSocket-the-session's-particular-instance and so cannot reach
|
|
||||||
/// another object's protected members directly) can still trigger
|
|
||||||
/// the handshake on a specific accepted session from
|
|
||||||
/// TCPServer::connectionRequest(), rather than accidentally running
|
|
||||||
/// it against the listening server socket itself (see that call
|
|
||||||
/// site's own comment for the real, confirmed crash this replaces -
|
|
||||||
/// SSL_read() on an accepted session's never-initialized ssl
|
|
||||||
/// member).
|
|
||||||
///
|
|
||||||
|
|
||||||
void performTLSHandshake();
|
|
||||||
|
|
||||||
///
|
|
||||||
/// Set once, at construction, and never touched again - how long
|
|
||||||
/// this specific socket has been open since accept()/connect(),
|
|
||||||
/// regardless of whether anything has actually happened on it
|
|
||||||
/// since. TCPServer::sweepStaleSessions() reads this (alongside
|
|
||||||
/// hasReceivedData below) to find connections that completed a
|
|
||||||
/// TCP handshake but then never progressed - a scanner/prober
|
|
||||||
/// probing an open port, or a TLS handshake that never finished -
|
|
||||||
/// which otherwise sit in TCPServer::sessions forever: nothing in
|
|
||||||
/// the existing design ever revisits a socket that stops
|
|
||||||
/// generating epoll events (see sweepStaleSessions()'s own doc
|
|
||||||
/// comment for the full reasoning).
|
|
||||||
///
|
|
||||||
|
|
||||||
std::chrono::steady_clock::time_point acceptedAt = std::chrono::steady_clock::now();
|
|
||||||
|
|
||||||
///
|
|
||||||
/// Flips to true the first time onDataReceived() sees a non-empty
|
|
||||||
/// read - true for both a plaintext socket's raw bytes and a TLS
|
|
||||||
/// session's already-decrypted ones, since both paths funnel
|
|
||||||
/// through the same onDataReceived() override below. A session
|
|
||||||
/// that reaches sweepStaleSessions()'s grace period with this
|
|
||||||
/// still false has never had a real exchange of any kind, TLS
|
|
||||||
/// handshake included (a stuck/incomplete SSL_accept() never
|
|
||||||
/// surfaces anything to onDataReceived) - the specific, narrow
|
|
||||||
/// condition that sweep treats as abandoned. Deliberately NOT
|
|
||||||
/// reset afterward and never consulted again once true, so a
|
|
||||||
/// legitimate client that sends something once and then goes
|
|
||||||
/// idle for a long time (an ordinary connected-but-idle game
|
|
||||||
/// session) is never at risk from this - only a connection that
|
|
||||||
/// NEVER said anything at all within the grace window is.
|
|
||||||
///
|
|
||||||
|
|
||||||
bool hasReceivedData = false;
|
|
||||||
|
|
||||||
protected:
|
|
||||||
bool term = false;
|
|
||||||
TLSInfo *tlsInfo;
|
|
||||||
|
|
||||||
private:
|
|
||||||
char *lineBuffer = NULL;
|
|
||||||
int lineBufferSize = 0;
|
|
||||||
int lineLength = 0;
|
|
||||||
int blockSize = 0;
|
|
||||||
|
|
||||||
// Socket's own `lock` (guards receiveData) and `outlock` (guards
|
|
||||||
// writeSocket/the fifo) are two DIFFERENT mutexes - a thread
|
|
||||||
// handling EPOLLIN and a different thread handling EPOLLWRNORM for
|
|
||||||
// the SAME connection can therefore call SSL_read and SSL_write on
|
|
||||||
// the SAME `ssl*` concurrently. OpenSSL does not support that: an
|
|
||||||
// SSL object must not be used by more than one thread at a time
|
|
||||||
// (even in 1.1.0+/3.x, which dropped the old app-supplied
|
|
||||||
// CRYPTO_set_locking_callback global-locking API entirely - that
|
|
||||||
// API never protected concurrent use of one SSL object anyway,
|
|
||||||
// only OpenSSL's own internal global state). Confirmed live via
|
|
||||||
// dmesg: "traps: apiserver[...] general protection fault ... in
|
|
||||||
// libssl.so.3" during ordinary interactive use. ioLock serializes
|
|
||||||
// just the raw SSL_read/SSL_write calls themselves (see
|
|
||||||
// receiveData/sendData below) - deliberately NOT the surrounding
|
|
||||||
// request-handling, which already nests `lock` before `outlock`
|
|
||||||
// (receiveData's call chain reaches Socket::write(), which takes
|
|
||||||
// outlock) - wrapping any larger scope in ioLock+lock+outlock
|
|
||||||
// together risks recreating that same ordering as a new cycle.
|
|
||||||
std::mutex ioLock;
|
|
||||||
|
|
||||||
};
|
};
|
||||||
|
|
||||||
}
|
}
|
||||||
|
|||||||
@@ -1,322 +0,0 @@
|
|||||||
#include "TLS.h"
|
|
||||||
#include "Exception.h"
|
|
||||||
#include "Log.h"
|
|
||||||
#include <iostream>
|
|
||||||
#include <openssl/rand.h>
|
|
||||||
|
|
||||||
namespace core {
|
|
||||||
|
|
||||||
static pthread_mutex_t *lockarray;
|
|
||||||
|
|
||||||
static unsigned long thread_id(void) {
|
|
||||||
return ((unsigned long) pthread_self());
|
|
||||||
}
|
|
||||||
|
|
||||||
static void lock_callback(int mode, int type, const char *file, int line) {
|
|
||||||
if(mode & CRYPTO_LOCK)
|
|
||||||
pthread_mutex_lock(&(lockarray[type]));
|
|
||||||
else
|
|
||||||
pthread_mutex_unlock(&(lockarray[type]));
|
|
||||||
}
|
|
||||||
|
|
||||||
static int generate_session_id(const SSL *ssl, unsigned char *id, unsigned int *id_len) {
|
|
||||||
char *session_id_prefix = (char *)"BARANT";
|
|
||||||
unsigned int count = 0;
|
|
||||||
coreutils::Log(coreutils::LOG_DEBUG_3) << "Generating unique session id.";
|
|
||||||
do {
|
|
||||||
RAND_bytes(id, *id_len);
|
|
||||||
memcpy(id, session_id_prefix, (strlen(session_id_prefix) < *id_len));
|
|
||||||
} while(SSL_has_matching_session_id(ssl, id, *id_len) && (++count < 10));
|
|
||||||
return 1;
|
|
||||||
}
|
|
||||||
|
|
||||||
void handshake_complete(const SSL *ssl, int where, int ret) {
|
|
||||||
coreutils::Log(coreutils::LOG_DEBUG_3) << "==>" << SSL_state_string_long(ssl) << "<==" << ret;
|
|
||||||
if(where & SSL_CB_HANDSHAKE_DONE) {
|
|
||||||
// Only a context configured with SSL_VERIFY_PEER (see
|
|
||||||
// createContext()'s own cACertificate-gated block) ever sends a
|
|
||||||
// client a CertificateRequest in the first place - ordinary
|
|
||||||
// one-way TLS (a public site's normal case, no caCertificate
|
|
||||||
// configured) never asks the client for one, so
|
|
||||||
// SSL_get_peer_certificate() is unconditionally NULL there and is
|
|
||||||
// not a failure. Checking the mode actually negotiated on THIS
|
|
||||||
// connection (inherited from the context) rather than assuming
|
|
||||||
// every handshake is mutual-TLS is what makes plain
|
|
||||||
// browser-facing HTTPS work at all under this callback.
|
|
||||||
if(SSL_get_verify_mode(ssl) & SSL_VERIFY_PEER) {
|
|
||||||
X509 *ssl_client_cert = SSL_get_peer_certificate(ssl);
|
|
||||||
if(!ssl_client_cert)
|
|
||||||
throw std::string("Unable to get peer certificate.");
|
|
||||||
X509_free(ssl_client_cert);
|
|
||||||
if(SSL_get_verify_result(ssl) != X509_V_OK)
|
|
||||||
throw std::string("Certificate verification failed.");
|
|
||||||
coreutils::Log(coreutils::LOG_DEBUG_3) << "Certificate verified successfully.";
|
|
||||||
}
|
|
||||||
}
|
|
||||||
else
|
|
||||||
coreutils::Log(coreutils::LOG_DEBUG_3) << "No client certificate.";
|
|
||||||
}
|
|
||||||
|
|
||||||
TLS::TLS() {}
|
|
||||||
|
|
||||||
TLS::TLS(TLSInfo *tlsInfo) {
|
|
||||||
createContext(tlsInfo);
|
|
||||||
}
|
|
||||||
|
|
||||||
TLS::TLS(SSL_CTX *ctx) : ctx(ctx) {}
|
|
||||||
|
|
||||||
TLS::~TLS() {}
|
|
||||||
|
|
||||||
void TLS::createContext(TLSInfo *tlsInfo) {
|
|
||||||
|
|
||||||
if(tlsInfo) {
|
|
||||||
SSL_library_init();
|
|
||||||
SSL_load_error_strings();
|
|
||||||
lockarray = (pthread_mutex_t *)OPENSSL_malloc(CRYPTO_num_locks() * sizeof(pthread_mutex_t));
|
|
||||||
for(int i = 0; i < CRYPTO_num_locks(); ++i)
|
|
||||||
pthread_mutex_init(&(lockarray[i]), NULL);
|
|
||||||
CRYPTO_set_id_callback((unsigned long (*)())thread_id);
|
|
||||||
CRYPTO_set_locking_callback((void (*)(int, int, const char *, int))lock_callback);
|
|
||||||
SSLeay_add_ssl_algorithms();
|
|
||||||
RAND_load_file("/dev/hwrng", 1024);
|
|
||||||
ctx = buildContext(tlsInfo);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
// The per-context cert/key/cipher/verify setup factored out of
|
|
||||||
// createContext() above so addSNIContext() (below) can build
|
|
||||||
// additional contexts - one per extra hostname - without repeating
|
|
||||||
// the ONE-TIME, process-wide OpenSSL library init that stays in
|
|
||||||
// createContext() itself (SSL_library_init(), the lockarray, RAND
|
|
||||||
// seeding): that part must only ever run once per process, not once
|
|
||||||
// per hostname.
|
|
||||||
SSL_CTX *TLS::buildContext(TLSInfo *tlsInfo) {
|
|
||||||
SSL_CTX *newCtx;
|
|
||||||
if(!(newCtx = SSL_CTX_new(SSLv23_server_method())))
|
|
||||||
throw coreutils::Exception("Error while setting server method SSLv23.");
|
|
||||||
SSL_CTX_set_mode(newCtx, SSL_MODE_RELEASE_BUFFERS | SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER);
|
|
||||||
SSL_CTX_set_options(newCtx, SSL_OP_NO_TICKET);
|
|
||||||
SSL_CTX_set_session_cache_mode(newCtx, SSL_SESS_CACHE_SERVER);
|
|
||||||
SSL_CTX_set_cipher_list(newCtx, "ECDH-ECDSA-AES256-GCM-SHA384:DHE-DSS-AES256-GCM-SHA384:DHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES256-SHA256:DHE-DSS-AES256-SHA256:DHE-RSA-AES256-SHA:DHE-DSS-AES256-SHA:AES256-GCM-SHA384:AES256-SHA256:AES256-SHA:AES128-GCM-SHA256:AES128-SHA256:AES128-SHA");
|
|
||||||
// _chain_file (not _file) - loads every certificate in the file,
|
|
||||||
// not just the first. A real Let's Encrypt fullchain.pem is the
|
|
||||||
// leaf cert followed by the intermediate CA cert concatenated in
|
|
||||||
// one file specifically so a server can hand both to the client
|
|
||||||
// in one shot; SSL_CTX_use_certificate_file() only ever reads the
|
|
||||||
// first PEM block, silently dropping the intermediate - confirmed
|
|
||||||
// via a real handshake against this exact fullchain.pem: clients
|
|
||||||
// got "unable to get local issuer certificate" because the server
|
|
||||||
// only ever sent the leaf, never the intermediate needed to chain
|
|
||||||
// up to a root the client already trusts.
|
|
||||||
if(SSL_CTX_use_certificate_chain_file(newCtx, tlsInfo->certificate.c_str()) <= 0)
|
|
||||||
throw coreutils::Exception("Error looking up certificate.");
|
|
||||||
if(SSL_CTX_use_PrivateKey_file(newCtx, tlsInfo->key.c_str(), SSL_FILETYPE_PEM) < 0)
|
|
||||||
throw coreutils::Exception("Error with private key.");
|
|
||||||
if(SSL_CTX_check_private_key(newCtx) != 1)
|
|
||||||
throw coreutils::Exception("Private key does not match certificate.");
|
|
||||||
// Client-certificate verification (mutual TLS) is opt-in, not the
|
|
||||||
// default - a public-facing site (e.g. a real Let's Encrypt
|
|
||||||
// server cert with no corresponding client CA of its own) has no
|
|
||||||
// client certificate to hand out to ordinary visitors, so
|
|
||||||
// requesting one via SSL_VERIFY_PEER would surface a "select a
|
|
||||||
// certificate" prompt real browsers can't meaningfully answer.
|
|
||||||
// Only enable it when a caCertificate is actually configured -
|
|
||||||
// existing internal/mTLS use of this class (any config that DOES
|
|
||||||
// set tls.caCertificate) keeps behaving exactly as before.
|
|
||||||
if(tlsInfo->cACertificate.getLength() > 0) {
|
|
||||||
SSL_CTX_set_verify(newCtx, SSL_VERIFY_PEER, NULL);
|
|
||||||
SSL_CTX_set_verify_depth(newCtx, 1);
|
|
||||||
if(!SSL_CTX_load_verify_locations(newCtx, tlsInfo->cACertificate.c_str(), NULL))
|
|
||||||
throw coreutils::Exception("Cannot verify locations.");
|
|
||||||
SSL_CTX_set_client_CA_list(newCtx, SSL_load_client_CA_file(tlsInfo->cACertificate.c_str()));
|
|
||||||
coreutils::Log(coreutils::LOG_INFO) << "Server key authenticated (client certificate required).";
|
|
||||||
} else {
|
|
||||||
coreutils::Log(coreutils::LOG_INFO) << "Server key authenticated (no client certificate required).";
|
|
||||||
}
|
|
||||||
return newCtx;
|
|
||||||
}
|
|
||||||
|
|
||||||
int TLS::sniCallback(SSL *ssl, int *ad, void *arg) {
|
|
||||||
TLS *self = (TLS *)arg;
|
|
||||||
const char *name = SSL_get_servername(ssl, TLSEXT_NAMETYPE_host_name);
|
|
||||||
if(name) {
|
|
||||||
auto it = self->sniContexts.find(name);
|
|
||||||
if(it != self->sniContexts.end())
|
|
||||||
SSL_set_SSL_CTX(ssl, it->second);
|
|
||||||
// No match (an unconfigured hostname, or a typo'd Host that still
|
|
||||||
// resolves here via DNS) - fall through and keep whatever SSL_CTX
|
|
||||||
// this SSL* already has, which is the base `ctx` SSL_new() was
|
|
||||||
// constructed from. Exactly the same cert a pre-SNI client (or
|
|
||||||
// one sending no SNI at all) already gets today.
|
|
||||||
}
|
|
||||||
return SSL_TLSEXT_ERR_OK;
|
|
||||||
}
|
|
||||||
|
|
||||||
void TLS::addSNIContext(const std::string &hostname, TLSInfo *tlsInfo) {
|
|
||||||
SSL_CTX *newCtx = buildContext(tlsInfo);
|
|
||||||
sniContexts[hostname] = newCtx;
|
|
||||||
if(!sniCallbackRegistered) {
|
|
||||||
SSL_CTX_set_tlsext_servername_callback(ctx, sniCallback);
|
|
||||||
SSL_CTX_set_tlsext_servername_arg(ctx, this);
|
|
||||||
sniCallbackRegistered = true;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
void TLS::registerSocket(int fd) {
|
|
||||||
int ret;
|
|
||||||
|
|
||||||
coreutils::Log(coreutils::LOG_DEBUG_3) << "TLS socket initializing on socket " << fd << "...";
|
|
||||||
|
|
||||||
fcntl(fd, F_SETFL, fcntl(fd, F_GETFL, 0) | O_NONBLOCK);
|
|
||||||
|
|
||||||
ssl = SSL_new(ctx);
|
|
||||||
// if(ssl <= 0)
|
|
||||||
// throw std::string("Error creating new TLS socket.");
|
|
||||||
|
|
||||||
SSL_set_info_callback(ssl, handshake_complete);
|
|
||||||
|
|
||||||
if((ret = SSL_set_fd(ssl, fd)) == 0)
|
|
||||||
throw std::string("Error setting TLS socket descriptor.");
|
|
||||||
|
|
||||||
// if(!SSL_set_generate_session_id(ssl, generate_session_id))
|
|
||||||
// throw std::string("Error setting session identifier callback.");
|
|
||||||
|
|
||||||
// Was set unconditionally as the FIRST statement in this
|
|
||||||
// function (before `ssl` was even assigned) - a flag meant to
|
|
||||||
// mean "ssl is a valid, ready-to-use SSL*" needs to become true
|
|
||||||
// only once that's actually true, at the end, not the start.
|
|
||||||
// Previously set but never actually READ anywhere either -
|
|
||||||
// sendData()/receiveData() below now check it before touching
|
|
||||||
// `ssl` at all. See their own doc comments for the real,
|
|
||||||
// confirmed crash this fixes: a brand-new TLS session's own
|
|
||||||
// greeting (queued in onConnected(), see e.g. IMAPSession.h)
|
|
||||||
// gets written via Socket::write() -> resetSocket(), which - deep
|
|
||||||
// inside TCPServer::accept(), BEFORE TCPServer::connectionRequest()
|
|
||||||
// ever calls this session's own performTLSHandshake() - makes the
|
|
||||||
// fd immediately eligible for an EPOLLWRNORM event on a SEPARATE
|
|
||||||
// epoll worker thread. That thread's TCPSocket::sendData() takes
|
|
||||||
// ioLock (see its own doc comment) and calls straight into
|
|
||||||
// SSL_write() on `ssl`, which is genuinely uninitialized garbage
|
|
||||||
// (TLS.h explicitly documents `ssl` has no default member
|
|
||||||
// initializer) until THIS function runs - ioLock alone doesn't
|
|
||||||
// prevent it, since performTLSHandshake() (the only other place
|
|
||||||
// that takes ioLock) hasn't even been called yet at that point.
|
|
||||||
// Confirmed live via gdb under a mixed-protocol connection-churn
|
|
||||||
// stress test: SIGSEGV inside libssl.so's SSL_write(), called from
|
|
||||||
// TCPSocket::sendData() with ioGuard already held, while
|
|
||||||
// registerSocket()/acceptSocket() for that same session were still
|
|
||||||
// pending on the accepting thread.
|
|
||||||
initialized = true;
|
|
||||||
}
|
|
||||||
|
|
||||||
void TLS::acceptSocket() {
|
|
||||||
|
|
||||||
switch (SSL_get_error(ssl, SSL_accept(ssl))) {
|
|
||||||
case SSL_ERROR_SSL:
|
|
||||||
coreutils::Log(coreutils::LOG_DEBUG_3) << "ERROR_SSL on ssl_accept. errno=" << errno;
|
|
||||||
break;
|
|
||||||
case SSL_ERROR_WANT_READ:
|
|
||||||
coreutils::Log(coreutils::LOG_DEBUG_3) << "ERROR_WANT_READ on ssl_accept.";
|
|
||||||
break;
|
|
||||||
case SSL_ERROR_WANT_WRITE:
|
|
||||||
coreutils::Log(coreutils::LOG_DEBUG_3) << "ERROR_WANT_WRITE on ssl_accept.";
|
|
||||||
break;
|
|
||||||
case SSL_ERROR_SYSCALL:
|
|
||||||
coreutils::Log(coreutils::LOG_DEBUG_3) << "ERROR_SYSCALL on ssl_accept. errno=" << errno;
|
|
||||||
// shutdown();
|
|
||||||
break;
|
|
||||||
default:
|
|
||||||
coreutils::Log(coreutils::LOG_DEBUG_3) << "Unknown ERROR on ssl_accept.";
|
|
||||||
break;
|
|
||||||
}
|
|
||||||
|
|
||||||
}
|
|
||||||
|
|
||||||
int TLS::receiveData(coreutils::ZString &buffer) {
|
|
||||||
|
|
||||||
// `ssl` is genuinely uninitialized until registerSocket() has
|
|
||||||
// fully run (see its own doc comment on `initialized` for the
|
|
||||||
// real crash this prevents) - a racing thread landing here first
|
|
||||||
// just gets "nothing yet", exactly like a real SSL_ERROR_WANT_READ
|
|
||||||
// would report, rather than touching a garbage pointer.
|
|
||||||
if (!initialized)
|
|
||||||
return -1;
|
|
||||||
|
|
||||||
int len;
|
|
||||||
coreutils::Log(coreutils::LOG_DEBUG_3) << "receiveData TLS on socket.";
|
|
||||||
|
|
||||||
if((len = ::SSL_read(ssl, buffer.getData(), buffer.getLength())) >= 0) {
|
|
||||||
coreutils::Log(coreutils::LOG_DEBUG_3) << "receiveData TLS...len=" << len;
|
|
||||||
return len;
|
|
||||||
}
|
|
||||||
else {
|
|
||||||
switch (SSL_get_error(ssl, len)) {
|
|
||||||
case SSL_ERROR_SSL:
|
|
||||||
coreutils::Log(coreutils::LOG_DEBUG_3) << "ERROR_SSL on ssl_read. error=" << errno;
|
|
||||||
break;
|
|
||||||
case SSL_ERROR_WANT_READ:
|
|
||||||
coreutils::Log(coreutils::LOG_DEBUG_3) << "ERROR_WANT_READ on ssl_read.";
|
|
||||||
break;
|
|
||||||
case SSL_ERROR_WANT_WRITE:
|
|
||||||
coreutils::Log(coreutils::LOG_DEBUG_3) << "ERROR_WANT_WRITE on ssl_read.";
|
|
||||||
break;
|
|
||||||
case SSL_ERROR_SYSCALL:
|
|
||||||
coreutils::Log(coreutils::LOG_DEBUG_3) << "ERROR_SYSCALL on ssl_read. errno=" << errno;
|
|
||||||
break;
|
|
||||||
default:
|
|
||||||
coreutils::Log(coreutils::LOG_DEBUG_3) << "Unknown ERROR on ssl_read.";
|
|
||||||
break;
|
|
||||||
}
|
|
||||||
return -1;
|
|
||||||
}
|
|
||||||
|
|
||||||
}
|
|
||||||
|
|
||||||
int TLS::sendData(const char *data, int length) {
|
|
||||||
|
|
||||||
// Same "ssl isn't ready yet" guard as receiveData() - see
|
|
||||||
// registerSocket()'s doc comment on `initialized` for the real,
|
|
||||||
// confirmed crash this prevents (SIGSEGV in SSL_write() on a
|
|
||||||
// still-uninitialized `ssl`, reached via a brand-new session's own
|
|
||||||
// greeting racing ahead of its own TLS handshake). Returning <= 0
|
|
||||||
// here is already the exact case Socket::writeSocket() treats as
|
|
||||||
// "nothing sent this round, leave it queued and retry on the next
|
|
||||||
// EPOLLWRNORM" - no special-casing needed at any call site.
|
|
||||||
if (!initialized)
|
|
||||||
return -1;
|
|
||||||
|
|
||||||
int len;
|
|
||||||
|
|
||||||
if((len = ::SSL_write(ssl, data, length)) >= 0) {
|
|
||||||
coreutils::Log(coreutils::LOG_DEBUG_3) << "sendData TLS...len=" << len;
|
|
||||||
lastSendWantedRead = false;
|
|
||||||
return len;
|
|
||||||
}
|
|
||||||
else {
|
|
||||||
lastSendWantedRead = false;
|
|
||||||
switch (SSL_get_error(ssl, len)) {
|
|
||||||
case SSL_ERROR_SSL:
|
|
||||||
coreutils::Log(coreutils::LOG_DEBUG_3) << "ERROR_SSL on ssl_write. error=" << errno;
|
|
||||||
break;
|
|
||||||
case SSL_ERROR_WANT_READ:
|
|
||||||
coreutils::Log(coreutils::LOG_DEBUG_3) << "ERROR_WANT_READ on ssl_write.";
|
|
||||||
lastSendWantedRead = true;
|
|
||||||
break;
|
|
||||||
case SSL_ERROR_WANT_WRITE:
|
|
||||||
coreutils::Log(coreutils::LOG_DEBUG_3) << "ERROR_WANT_WRITE on ssl_write.";
|
|
||||||
break;
|
|
||||||
case SSL_ERROR_SYSCALL:
|
|
||||||
coreutils::Log(coreutils::LOG_DEBUG_3) << "ERROR_SYSCALL on ssl_write. errno=" << errno;
|
|
||||||
break;
|
|
||||||
default:
|
|
||||||
coreutils::Log(coreutils::LOG_DEBUG_3) << "Unknown ERROR on ssl_write.";
|
|
||||||
break;
|
|
||||||
}
|
|
||||||
return -1;
|
|
||||||
}
|
|
||||||
|
|
||||||
}
|
|
||||||
|
|
||||||
}
|
|
||||||
|
|
||||||
@@ -1,130 +0,0 @@
|
|||||||
#ifndef __TLS_h__
|
|
||||||
#define __TLS_h__
|
|
||||||
|
|
||||||
#include "ZString.h"
|
|
||||||
#include "TLSInfo.h"
|
|
||||||
#include <openssl/ssl.h>
|
|
||||||
#include <map>
|
|
||||||
#include <string>
|
|
||||||
|
|
||||||
namespace core {
|
|
||||||
|
|
||||||
///
|
|
||||||
/// TLS
|
|
||||||
///
|
|
||||||
/// This object provides the support methods to handle TLS on the server core and
|
|
||||||
/// session environment.
|
|
||||||
///
|
|
||||||
|
|
||||||
class TLS {
|
|
||||||
|
|
||||||
public:
|
|
||||||
|
|
||||||
///
|
|
||||||
///
|
|
||||||
///
|
|
||||||
|
|
||||||
TLS();
|
|
||||||
|
|
||||||
///
|
|
||||||
/// Use this constructor when the SSL context needs to be created as when opening
|
|
||||||
/// a server TCPSocket.
|
|
||||||
///
|
|
||||||
|
|
||||||
TLS(TLSInfo *tlsInfo);
|
|
||||||
|
|
||||||
///
|
|
||||||
/// Use this constructor on creation of a new TCPSocket that needs access to
|
|
||||||
/// the generating server's SSL context.
|
|
||||||
///
|
|
||||||
|
|
||||||
TLS(SSL_CTX *ctx);
|
|
||||||
|
|
||||||
///
|
|
||||||
/// The destructor for this object.
|
|
||||||
///
|
|
||||||
|
|
||||||
~TLS();
|
|
||||||
|
|
||||||
void createContext(TLSInfo *tlsInfo);
|
|
||||||
|
|
||||||
///
|
|
||||||
/// Registers a second (or third, etc.) certificate/key pair for a
|
|
||||||
/// specific hostname on THIS SAME listening socket, via TLS's
|
|
||||||
/// Server Name Indication (SNI) extension - lets one TCPServer
|
|
||||||
/// terminate TLS for multiple unrelated domains, each with its own
|
|
||||||
/// real certificate, without needing a separate listening port or
|
|
||||||
/// process per domain. Must be called after createContext() (or the
|
|
||||||
/// TLSInfo* constructor, which calls it) has already established the
|
|
||||||
/// base `ctx` - that base context keeps serving as both the
|
|
||||||
/// fallback for hostnames not registered here AND the cert offered
|
|
||||||
/// to any client that sends no SNI hostname at all (a bare-IP
|
|
||||||
/// request, or any TLS client old enough to predate SNI). Callers
|
|
||||||
/// that never call this at all (every existing single-site
|
|
||||||
/// TLSInfo* user - BARANTMail, Zephora, ClockPlanet, and a
|
|
||||||
/// single-site APIServer config) see zero behavior change: the SNI
|
|
||||||
/// callback is only ever registered on `ctx` the first time this is
|
|
||||||
/// called, not unconditionally in createContext().
|
|
||||||
///
|
|
||||||
void addSNIContext(const std::string &hostname, TLSInfo *tlsInfo);
|
|
||||||
|
|
||||||
// A never-configured TLS object (either the listening TCPServer
|
|
||||||
// itself when constructed with tlsInfo=NULL, or a TCPSession spawned
|
|
||||||
// from one via TLS(SSL_CTX*)) must default to a real NULL here, not
|
|
||||||
// garbage - TCPSocket::receiveData()/sendData() key their TLS-vs-
|
|
||||||
// plain dispatch on this exact value (see TCPSocket.cpp).
|
|
||||||
SSL_CTX *ctx = NULL;
|
|
||||||
|
|
||||||
protected:
|
|
||||||
int receiveData(coreutils::ZString &buffer);
|
|
||||||
int sendData(const char *data, int length);
|
|
||||||
void registerSocket(int fd);
|
|
||||||
void acceptSocket();
|
|
||||||
|
|
||||||
protected:
|
|
||||||
// Set by sendData() when the last SSL_write() failed specifically
|
|
||||||
// with SSL_ERROR_WANT_READ (needs a READ to make progress - e.g.
|
|
||||||
// mid-handshake application data, or a post-handshake session
|
|
||||||
// ticket exchange) rather than any other reason. TCPSocket::
|
|
||||||
// sendNeedsRead() reads this (protected, so a subclass can reach
|
|
||||||
// it directly) to tell Socket::writeSocket()/resetSocket() not to
|
|
||||||
// busy-spin retrying the write via EPOLLWRNORM - see their own
|
|
||||||
// doc comments for the confirmed real damage (a 15GB+ debug log,
|
|
||||||
// and every affected connection dropped before ever reading the
|
|
||||||
// client's first command) this caused when unaddressed.
|
|
||||||
bool lastSendWantedRead = false;
|
|
||||||
|
|
||||||
private:
|
|
||||||
char *sip_cacert = (char *)"../testkeys/certs/pbxca.crt";
|
|
||||||
char *sip_cert = (char *)"../testkeys/certs/pbxserver.crt";
|
|
||||||
char *sip_key = (char *)"../testkeys/certs/pbxserver.key";
|
|
||||||
bool initialized = false;
|
|
||||||
SSL *ssl;
|
|
||||||
|
|
||||||
// The actual cert/key-loading + cipher/session-cache setup shared
|
|
||||||
// by both the base context (createContext(), unchanged) and every
|
|
||||||
// additional per-hostname context addSNIContext() builds - factored
|
|
||||||
// out so there's exactly one place that does this, not two copies
|
|
||||||
// drifting apart.
|
|
||||||
SSL_CTX *buildContext(TLSInfo *tlsInfo);
|
|
||||||
|
|
||||||
// Owns every SSL_CTX* built by addSNIContext() (the base `ctx` is
|
|
||||||
// owned/freed the same way it always was, untouched by this map).
|
|
||||||
// Keyed by hostname exactly as configured - matched case-
|
|
||||||
// insensitively against the ClientHello's SNI value in the
|
|
||||||
// callback (see TLS.cpp).
|
|
||||||
std::map<std::string, SSL_CTX *> sniContexts;
|
|
||||||
bool sniCallbackRegistered = false;
|
|
||||||
|
|
||||||
// OpenSSL's own SSL_CTX_set_tlsext_servername_callback signature -
|
|
||||||
// a static member (not a free function) so it can reach the owning
|
|
||||||
// TLS instance's private sniContexts via the `arg` parameter
|
|
||||||
// (SSL_CTX_set_tlsext_servername_arg(ctx, this), set alongside the
|
|
||||||
// callback itself in addSNIContext()).
|
|
||||||
static int sniCallback(SSL *ssl, int *ad, void *arg);
|
|
||||||
|
|
||||||
};
|
|
||||||
|
|
||||||
}
|
|
||||||
|
|
||||||
#endif
|
|
||||||
@@ -1,27 +0,0 @@
|
|||||||
#ifndef __TLSInfo_h__
|
|
||||||
#define __TLSInfo_h__
|
|
||||||
|
|
||||||
#include "ZString.h"
|
|
||||||
|
|
||||||
namespace core {
|
|
||||||
|
|
||||||
///
|
|
||||||
/// TLSInfo
|
|
||||||
///
|
|
||||||
/// This object provides the support data to handle TLS on the server core and
|
|
||||||
/// session environment.
|
|
||||||
///
|
|
||||||
|
|
||||||
class TLSInfo {
|
|
||||||
|
|
||||||
public:
|
|
||||||
|
|
||||||
coreutils::ZString cACertificate;
|
|
||||||
coreutils::ZString certificate;
|
|
||||||
coreutils::ZString key;
|
|
||||||
|
|
||||||
};
|
|
||||||
|
|
||||||
}
|
|
||||||
|
|
||||||
#endif
|
|
||||||
@@ -0,0 +1,66 @@
|
|||||||
|
#include "TLSServer.h"
|
||||||
|
#include "TLSSession.h"
|
||||||
|
#include "EPoll.h"
|
||||||
|
#include "TCPSession.h"
|
||||||
|
#include "Exception.h"
|
||||||
|
|
||||||
|
namespace core {
|
||||||
|
|
||||||
|
static pthread_mutex_t *lockarray;
|
||||||
|
|
||||||
|
static unsigned long thread_id(void) {
|
||||||
|
return ((unsigned long) pthread_self());
|
||||||
|
}
|
||||||
|
|
||||||
|
static void lock_callback(int mode, int type, const char *file, int line) {
|
||||||
|
if(mode & CRYPTO_LOCK)
|
||||||
|
pthread_mutex_lock(&(lockarray[type]));
|
||||||
|
else
|
||||||
|
pthread_mutex_unlock(&(lockarray[type]));
|
||||||
|
}
|
||||||
|
|
||||||
|
TLSServer::TLSServer(EPoll &ePoll, IPAddress address) : TCPServer(ePoll, address) {
|
||||||
|
|
||||||
|
SSL_library_init();
|
||||||
|
SSL_load_error_strings();
|
||||||
|
|
||||||
|
lockarray = (pthread_mutex_t *)OPENSSL_malloc(CRYPTO_num_locks() * sizeof(pthread_mutex_t));
|
||||||
|
for(int i = 0; i < CRYPTO_num_locks(); ++i)
|
||||||
|
pthread_mutex_init(&(lockarray[i]), NULL);
|
||||||
|
|
||||||
|
CRYPTO_set_id_callback((unsigned long (*)())thread_id);
|
||||||
|
CRYPTO_set_locking_callback((void (*)(int, int, const char *, int))lock_callback);
|
||||||
|
|
||||||
|
SSLeay_add_ssl_algorithms();
|
||||||
|
RAND_load_file("/dev/hwrng", 1024);
|
||||||
|
|
||||||
|
if(!(ctx = SSL_CTX_new(SSLv23_server_method())))
|
||||||
|
throw coreutils::Exception("Error while setting server method SSLv23.");
|
||||||
|
SSL_CTX_set_mode(ctx, SSL_MODE_RELEASE_BUFFERS | SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER);
|
||||||
|
SSL_CTX_set_options(ctx, SSL_OP_NO_TICKET);
|
||||||
|
SSL_CTX_set_session_cache_mode(ctx, SSL_SESS_CACHE_SERVER);
|
||||||
|
// SSL_CTX_set_generate_session_id(ctx, generate_session_id);
|
||||||
|
SSL_CTX_set_cipher_list(ctx, "ECDH-ECDSA-AES256-GCM-SHA384:DHE-DSS-AES256-GCM-SHA384:DHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES256-SHA256:DHE-DSS-AES256-SHA256:DHE-RSA-AES256-SHA:DHE-DSS-AES256-SHA:AES256-GCM-SHA384:AES256-SHA256:AES256-SHA:AES128-GCM-SHA256:AES128-SHA256:AES128-SHA");
|
||||||
|
if(SSL_CTX_use_certificate_file(ctx, sip_cert, SSL_FILETYPE_PEM) <= 0)
|
||||||
|
throw coreutils::Exception("Error looking up certificate.");
|
||||||
|
if(SSL_CTX_use_PrivateKey_file(ctx, sip_key, SSL_FILETYPE_PEM) < 0)
|
||||||
|
throw coreutils::Exception("Error with private key.");
|
||||||
|
if(SSL_CTX_check_private_key(ctx) != 1)
|
||||||
|
throw coreutils::Exception("Private key does not match certificate.");
|
||||||
|
SSL_CTX_set_verify(ctx, SSL_VERIFY_PEER, NULL);
|
||||||
|
SSL_CTX_set_verify_depth(ctx, 1);
|
||||||
|
if(!SSL_CTX_load_verify_locations(ctx, sip_cacert, NULL))
|
||||||
|
throw coreutils::Exception("Cannot verify locations.");
|
||||||
|
SSL_CTX_set_client_CA_list(ctx, SSL_load_client_CA_file(sip_cacert));
|
||||||
|
coreutils::Log(coreutils::LOG_DEBUG_1) << "Server key authenticated.";
|
||||||
|
}
|
||||||
|
|
||||||
|
TLSServer::~TLSServer() {
|
||||||
|
|
||||||
|
}
|
||||||
|
|
||||||
|
TCPSession * TLSServer::getSocketAccept() {
|
||||||
|
return new TLSSession(ePoll, *this);
|
||||||
|
}
|
||||||
|
|
||||||
|
}
|
||||||
@@ -0,0 +1,54 @@
|
|||||||
|
#ifndef TLSServerSocket_h__
|
||||||
|
#define TLSServerSocket_h__
|
||||||
|
|
||||||
|
#include "Socket.h"
|
||||||
|
#include "TCPServer.h"
|
||||||
|
#include "Command.h"
|
||||||
|
#include "TCPSession.h"
|
||||||
|
#include "IPAddress.h"
|
||||||
|
|
||||||
|
namespace core {
|
||||||
|
|
||||||
|
///
|
||||||
|
/// TLSServer
|
||||||
|
///
|
||||||
|
/// Manage a socket connection as a TLS server type. Connections to the socket are processed through
|
||||||
|
/// the accept functionality.
|
||||||
|
///
|
||||||
|
|
||||||
|
class TLSServer : public TCPServer {
|
||||||
|
|
||||||
|
public:
|
||||||
|
|
||||||
|
///
|
||||||
|
/// The constructor.
|
||||||
|
///
|
||||||
|
/// @param ePoll the BMAEPoll instance that manages the socket.
|
||||||
|
/// @param url the IP address for the socket to receive connection requests.
|
||||||
|
/// @param port the port number that the socket will listen on.
|
||||||
|
/// @param commandName the name of the command used to invoke the status display for this object.
|
||||||
|
/// @return the instance of the BMATLSServerSocket.
|
||||||
|
|
||||||
|
TLSServer(EPoll &ePoll, IPAddress address);
|
||||||
|
|
||||||
|
///
|
||||||
|
/// The destructor for this object.
|
||||||
|
///
|
||||||
|
|
||||||
|
~TLSServer();
|
||||||
|
|
||||||
|
TCPSession * getSocketAccept();
|
||||||
|
|
||||||
|
SSL_CTX *ctx;
|
||||||
|
|
||||||
|
private:
|
||||||
|
|
||||||
|
char *sip_cacert = (char *)"../testkeys/certs/pbxca.crt";
|
||||||
|
char *sip_cert = (char *)"../testkeys/certs/pbxserver.crt";
|
||||||
|
char *sip_key = (char *)"../testkeys/certs/pbxserver.key";
|
||||||
|
|
||||||
|
};
|
||||||
|
|
||||||
|
}
|
||||||
|
|
||||||
|
#endif
|
||||||
@@ -0,0 +1,123 @@
|
|||||||
|
#include "TLSSession.h"
|
||||||
|
#include "EPoll.h"
|
||||||
|
#include "Log.h"
|
||||||
|
#include "Exception.h"
|
||||||
|
|
||||||
|
namespace core {
|
||||||
|
|
||||||
|
static int generate_session_id(const SSL *ssl, unsigned char *id, unsigned int *id_len) {
|
||||||
|
char *session_id_prefix = (char *)"BARANT";
|
||||||
|
unsigned int count = 0;
|
||||||
|
coreutils::Log(coreutils::LOG_DEBUG_3) << "Generating unique session id.";
|
||||||
|
do {
|
||||||
|
RAND_bytes(id, *id_len);
|
||||||
|
memcpy(id, session_id_prefix, (strlen(session_id_prefix) < *id_len));
|
||||||
|
} while(SSL_has_matching_session_id(ssl, id, *id_len) && (++count < 10));
|
||||||
|
return 1;
|
||||||
|
}
|
||||||
|
|
||||||
|
void handshake_complete(const SSL *ssl, int where, int ret) {
|
||||||
|
coreutils::Log(coreutils::LOG_DEBUG_3) << "==>" << SSL_state_string_long(ssl) << "<==" << ret;
|
||||||
|
if(where & SSL_CB_HANDSHAKE_DONE) {
|
||||||
|
X509 *ssl_client_cert = SSL_get_peer_certificate(ssl);
|
||||||
|
if(!ssl_client_cert)
|
||||||
|
throw std::string("Unable to get peer certificate.");
|
||||||
|
X509_free(ssl_client_cert);
|
||||||
|
if(SSL_get_verify_result(ssl) != X509_V_OK)
|
||||||
|
throw std::string("Certificate verification failed.");
|
||||||
|
coreutils::Log(coreutils::LOG_DEBUG_3) << "Certificate verified successfully.";
|
||||||
|
}
|
||||||
|
else
|
||||||
|
coreutils::Log(coreutils::LOG_DEBUG_3) << "No client certificate.";
|
||||||
|
}
|
||||||
|
|
||||||
|
TLSSession::TLSSession(EPoll &ePoll, TCPServer &server) : TCPSession(ePoll, server) {}
|
||||||
|
|
||||||
|
void TLSSession::onRegister() {
|
||||||
|
initialized = true;
|
||||||
|
int ret;
|
||||||
|
|
||||||
|
coreutils::Log(coreutils::LOG_DEBUG_3) << "TLS socket initializing on socket " << getDescriptor() << "...";
|
||||||
|
|
||||||
|
fcntl(getDescriptor(), F_SETFL, fcntl(getDescriptor(), F_GETFL, 0) | O_NONBLOCK);
|
||||||
|
|
||||||
|
ssl = SSL_new(static_cast<TLSServer &>(server).ctx);
|
||||||
|
// if(ssl <= 0)
|
||||||
|
// throw std::string("Error creating new TLS socket.");
|
||||||
|
|
||||||
|
SSL_set_info_callback(ssl, handshake_complete);
|
||||||
|
|
||||||
|
if((ret = SSL_set_fd(ssl, getDescriptor())) == 0)
|
||||||
|
throw std::string("Error setting TLS socket descriptor.");
|
||||||
|
|
||||||
|
// if(!SSL_set_generate_session_id(ssl, generate_session_id))
|
||||||
|
// throw std::string("Error setting session identifier callback.");
|
||||||
|
|
||||||
|
}
|
||||||
|
|
||||||
|
void TLSSession::onRegistered() {
|
||||||
|
|
||||||
|
switch (SSL_get_error(ssl, SSL_accept(ssl))) {
|
||||||
|
case SSL_ERROR_SSL:
|
||||||
|
coreutils::Log(coreutils::LOG_DEBUG_3) << "ERROR_SSL on ssl_accept. errno=" << errno;
|
||||||
|
break;
|
||||||
|
case SSL_ERROR_WANT_READ:
|
||||||
|
coreutils::Log(coreutils::LOG_DEBUG_3) << "ERROR_WANT_READ on ssl_accept.";
|
||||||
|
break;
|
||||||
|
case SSL_ERROR_WANT_WRITE:
|
||||||
|
coreutils::Log(coreutils::LOG_DEBUG_3) << "ERROR_WANT_WRITE on ssl_accept.";
|
||||||
|
break;
|
||||||
|
case SSL_ERROR_SYSCALL:
|
||||||
|
coreutils::Log(coreutils::LOG_DEBUG_3) << "ERROR_SYSCALL on ssl_accept. errno=" << errno;
|
||||||
|
shutdown();
|
||||||
|
break;
|
||||||
|
default:
|
||||||
|
coreutils::Log(coreutils::LOG_DEBUG_3) << "Unknown ERROR on ssl_accept.";
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
|
||||||
|
}
|
||||||
|
|
||||||
|
TLSSession::~TLSSession() {}
|
||||||
|
|
||||||
|
void TLSSession::protocol(coreutils::ZString &data) {}
|
||||||
|
|
||||||
|
void TLSSession::receiveData(coreutils::ZString &buffer) {
|
||||||
|
|
||||||
|
int len;
|
||||||
|
// int error = -1;
|
||||||
|
//
|
||||||
|
std::cout << "receiveData TLS" << std::endl;
|
||||||
|
|
||||||
|
if((len = ::SSL_read(ssl, buffer.getData(), buffer.getLength())) >= 0) {
|
||||||
|
std::cout << "receiveData TLS...len=" << len << ":" << buffer << std::endl;
|
||||||
|
onDataReceived(buffer);
|
||||||
|
}
|
||||||
|
else {
|
||||||
|
switch (SSL_get_error(ssl, len)) {
|
||||||
|
case SSL_ERROR_SSL:
|
||||||
|
coreutils::Log(coreutils::LOG_DEBUG_3) << "ERROR_SSL on ssl_read. error=" << errno;
|
||||||
|
break;
|
||||||
|
case SSL_ERROR_WANT_READ:
|
||||||
|
coreutils::Log(coreutils::LOG_DEBUG_3) << "ERROR_WANT_READ on ssl_read.";
|
||||||
|
break;
|
||||||
|
case SSL_ERROR_WANT_WRITE:
|
||||||
|
coreutils::Log(coreutils::LOG_DEBUG_3) << "ERROR_WANT_WRITE on ssl_read.";
|
||||||
|
break;
|
||||||
|
case SSL_ERROR_SYSCALL:
|
||||||
|
coreutils::Log(coreutils::LOG_DEBUG_3) << "ERROR_SYSCALL on ssl_read. errno=" << errno;
|
||||||
|
break;
|
||||||
|
default:
|
||||||
|
coreutils::Log(coreutils::LOG_DEBUG_3) << "Unknown ERROR on ssl_read.";
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
}
|
||||||
|
|
||||||
|
void TLSSession::output(std::stringstream &out) {
|
||||||
|
out << "|" << ipAddress.getClientAddressAndPort();
|
||||||
|
}
|
||||||
|
|
||||||
|
}
|
||||||
|
|
||||||
@@ -0,0 +1,53 @@
|
|||||||
|
#ifndef __TLSSession_h__
|
||||||
|
#define __TLSSession_h__
|
||||||
|
|
||||||
|
#include "includes"
|
||||||
|
#include "TCPSession.h"
|
||||||
|
#include "TLSServer.h"
|
||||||
|
#include <openssl/ssl.h>
|
||||||
|
|
||||||
|
namespace core {
|
||||||
|
|
||||||
|
class TLSServer;
|
||||||
|
|
||||||
|
///
|
||||||
|
/// TLSSession
|
||||||
|
///
|
||||||
|
/// Provides a network TLS socket.
|
||||||
|
///
|
||||||
|
/// For accessing TLS network functions use this object. The connection oriented nature of TLS
|
||||||
|
/// provides a single client persistent connection with data error correction and a durable
|
||||||
|
/// synchronous data connection.
|
||||||
|
///
|
||||||
|
|
||||||
|
class TLSSession : public TCPSession {
|
||||||
|
|
||||||
|
public:
|
||||||
|
|
||||||
|
TLSSession(EPoll &ePoll, TCPServer &server);
|
||||||
|
~TLSSession();
|
||||||
|
|
||||||
|
///
|
||||||
|
/// The output method is called by a socket session (Session) and
|
||||||
|
/// will output the detail information for the client socket. When extending
|
||||||
|
/// TLSSocket or Session you can override the method to add attributes
|
||||||
|
/// to the list.
|
||||||
|
///
|
||||||
|
|
||||||
|
virtual void output(std::stringstream &out);
|
||||||
|
virtual void protocol(coreutils::ZString &data) override;
|
||||||
|
|
||||||
|
protected:
|
||||||
|
void receiveData(coreutils::ZString &buffer) override;
|
||||||
|
void onRegister();
|
||||||
|
void onRegistered();
|
||||||
|
|
||||||
|
private:
|
||||||
|
bool initialized = false;
|
||||||
|
SSL *ssl;
|
||||||
|
|
||||||
|
};
|
||||||
|
|
||||||
|
}
|
||||||
|
|
||||||
|
#endif
|
||||||
@@ -1,11 +1,12 @@
|
|||||||
#include "TerminalSession.h"
|
#include "TerminalSession.h"
|
||||||
#include <sys/ioctl.h>
|
|
||||||
|
|
||||||
namespace core {
|
namespace core {
|
||||||
|
|
||||||
TerminalSession::TerminalSession(EPoll &ePoll, TCPServer *server) : TCPSession(ePoll, server) {}
|
TerminalSession::TerminalSession(EPoll &ePoll, TCPServer &server) : TCPSession(ePoll, server) {
|
||||||
|
}
|
||||||
|
|
||||||
TerminalSession::~TerminalSession() {}
|
TerminalSession::~TerminalSession() {
|
||||||
|
}
|
||||||
|
|
||||||
int TerminalSession::getLines() {
|
int TerminalSession::getLines() {
|
||||||
struct winsize size;
|
struct winsize size;
|
||||||
|
|||||||
@@ -1,6 +1,7 @@
|
|||||||
#ifndef __Terminal_h__
|
#ifndef __Terminal_h__
|
||||||
#define __Terminal_h__
|
#define __Terminal_h__
|
||||||
|
|
||||||
|
#include "includes"
|
||||||
#include "TCPSession.h"
|
#include "TCPSession.h"
|
||||||
#include "TCPServer.h"
|
#include "TCPServer.h"
|
||||||
|
|
||||||
@@ -29,7 +30,7 @@ namespace core {
|
|||||||
class TerminalSession : public TCPSession {
|
class TerminalSession : public TCPSession {
|
||||||
|
|
||||||
public:
|
public:
|
||||||
TerminalSession(EPoll &ePoll, TCPServer *server);
|
TerminalSession(EPoll &ePoll, TCPServer &server);
|
||||||
~TerminalSession();
|
~TerminalSession();
|
||||||
|
|
||||||
int getLines();
|
int getLines();
|
||||||
|
|||||||
@@ -1,40 +1,12 @@
|
|||||||
#include "Thread.h"
|
#include "Thread.h"
|
||||||
#include "EPoll.h"
|
#include "EPoll.h"
|
||||||
#include "TCPServer.h"
|
|
||||||
#include "INotify.h"
|
|
||||||
#include <sys/epoll.h>
|
|
||||||
|
|
||||||
namespace core {
|
namespace core {
|
||||||
|
|
||||||
Thread::Thread(EPoll &ePoll) : ePoll(ePoll), _thread(NULL), thread(NULL) {}
|
Thread::Thread(EPoll &ePoll) : ePoll(ePoll) {}
|
||||||
// Previously discarded `scope` entirely (never assigned to the `thread`
|
Thread::Thread(EPoll &ePoll, ThreadScope *scope) : ePoll(ePoll) {}
|
||||||
// member) - a real, live bug found while adding the first actual caller
|
|
||||||
// of this constructor (APIServer's MysqlThreadScope): the whole point
|
|
||||||
// of passing a scope in was to have it invoked from run() below, which
|
|
||||||
// silently never happened.
|
|
||||||
Thread::Thread(EPoll &ePoll, ThreadScope *scope) : ePoll(ePoll), _thread(NULL), thread(scope) {}
|
|
||||||
|
|
||||||
// Was empty - _thread (heap-allocated in start()) was never joined or
|
Thread::~Thread() {}
|
||||||
// freed here. A joinable std::thread destroyed without join()/detach()
|
|
||||||
// calls std::terminate() immediately, which this leaked-pointer
|
|
||||||
// approach silently sidestepped: the wrapped OS thread just kept
|
|
||||||
// running - polling this Thread's EPoll reference, touching Socket
|
|
||||||
// objects registered with it - even after this object, its EPoll, and
|
|
||||||
// every one of those sockets had already been destroyed out from under
|
|
||||||
// it (confirmed live: an exception thrown during BARANTMail startup,
|
|
||||||
// after EPoll::start() had already spun up its worker pool, unwound
|
|
||||||
// the stack destructing EPoll and its registered sockets while those
|
|
||||||
// still-running threads kept dereferencing them, producing a real
|
|
||||||
// "double free or corruption" crash). join() first (skipped if already
|
|
||||||
// joined via EPoll::stop() having run normally) so the OS thread is
|
|
||||||
// actually gone before anything it might touch gets freed.
|
|
||||||
Thread::~Thread() {
|
|
||||||
if (_thread) {
|
|
||||||
if (_thread->joinable())
|
|
||||||
_thread->join();
|
|
||||||
delete _thread;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
void Thread::start() {
|
void Thread::start() {
|
||||||
_thread = new std::thread(&Thread::run, this);
|
_thread = new std::thread(&Thread::run, this);
|
||||||
@@ -68,9 +40,6 @@ namespace core {
|
|||||||
|
|
||||||
coreutils::Log(coreutils::LOG_DEBUG_1) << "Thread started with thread id " << threadId << ".";
|
coreutils::Log(coreutils::LOG_DEBUG_1) << "Thread started with thread id " << threadId << ".";
|
||||||
|
|
||||||
if(thread)
|
|
||||||
thread->onThreadStart();
|
|
||||||
|
|
||||||
count = 0;
|
count = 0;
|
||||||
|
|
||||||
struct epoll_event events[50];
|
struct epoll_event events[50];
|
||||||
@@ -81,108 +50,27 @@ namespace core {
|
|||||||
break;
|
break;
|
||||||
|
|
||||||
status = "WAITING";
|
status = "WAITING";
|
||||||
// A finite timeout, not the previous -1 (wait forever), is what
|
int rc = epoll_wait(ePoll.getDescriptor(), events, 50, -1);
|
||||||
// makes EPoll::stop() able to return at all: a thread idly
|
|
||||||
// blocked here with no socket activity would otherwise never
|
|
||||||
// re-check isStopping() above, so join()ing it (both
|
|
||||||
// EPoll::stop() and, now, ~Thread() itself) would hang forever.
|
|
||||||
// Costs up to a one-second shutdown latency.
|
|
||||||
int rc = epoll_wait(ePoll.getDescriptor(), events, 50, 1000);
|
|
||||||
status = "RUNNING";
|
status = "RUNNING";
|
||||||
|
|
||||||
if(rc < 0) {
|
if(rc < 0) {
|
||||||
// TODO: Make log entry indicating status received and ignore for now.
|
// TODO: Make log entry indicating status received and ignore for now.
|
||||||
} else if(rc == 0) {
|
} else if(rc == 0) {
|
||||||
// Plain timeout, no socket activity - not itself a signal to
|
break;
|
||||||
// stop (isStopping() above already decides that). Previously
|
|
||||||
// broke out of the loop unconditionally, which the old
|
|
||||||
// infinite wait never actually triggered in practice, but
|
|
||||||
// would have silently ended this thread after any single
|
|
||||||
// idle second once the wait became finite.
|
|
||||||
} else if(rc > 0) {
|
} else if(rc > 0) {
|
||||||
for(int ix = 0; ix < rc; ++ix) {
|
for(int ix = 0; ix < rc; ++ix) {
|
||||||
++count;
|
++count;
|
||||||
// events[ix].data.ptr is a raw pointer of UNKNOWN validity at
|
if(((Socket *)events[ix].data.ptr)->eventReceived(events[ix], ++ePoll.eventId)) {
|
||||||
// this point - it could be a live TCPSession, a listening
|
// coreutils::Log(coreutils::LOG_DEBUG_4) << "return true";
|
||||||
// TCPServer/ConsoleServer (immortal, never shared_ptr-owned),
|
// ePoll.resetSocket((Socket *)events[ix].data.ptr);
|
||||||
// or - the case this whole block exists to handle safely - a
|
|
||||||
// stale/duplicate event for a TCPSession something else
|
|
||||||
// already fully destroyed and freed on another thread.
|
|
||||||
//
|
|
||||||
// A first version of this fix used dynamic_cast<TCPSession*>
|
|
||||||
// to tell these apart, and a version before that cast
|
|
||||||
// straight to Socket* unconditionally (the original code).
|
|
||||||
// BOTH require reading the pointed-to object's own memory
|
|
||||||
// (its vtable, at minimum) to work - confirmed live via
|
|
||||||
// AddressSanitizer that dynamic_cast itself segfaults on a
|
|
||||||
// stale pointer, before any pin()-based safety logic even
|
|
||||||
// runs. TCPSession::tryGet() and TCPServer::isKnownListening
|
|
||||||
// Socket() below never dereference this raw pointer for their
|
|
||||||
// own check - only compare its address against a registry -
|
|
||||||
// so they're safe to call on literally any value here,
|
|
||||||
// known-good or not.
|
|
||||||
void *rawPtr = events[ix].data.ptr;
|
|
||||||
std::shared_ptr<TCPSession> pinned = TCPSession::tryGet(rawPtr);
|
|
||||||
if(pinned) {
|
|
||||||
if(pinned->eventReceived(events[ix], ++ePoll.eventId)) {
|
|
||||||
// keep alive - pinned goes out of scope at the end of
|
|
||||||
// this iteration, releasing this thread's temporary
|
|
||||||
// reference; real ownership (TCPServer::sessions) is
|
|
||||||
// unaffected.
|
|
||||||
} else {
|
} else {
|
||||||
pinned->shutDown = true;
|
((Socket *)events[ix].data.ptr)->shutDown = true;
|
||||||
// Was `delete (Socket *)events[ix].data.ptr;`
|
// coreutils::Log(coreutils::LOG_DEBUG_4) << "return false";
|
||||||
// unconditionally, for every socket type, including
|
delete (Socket *)events[ix].data.ptr;
|
||||||
// real sessions another thread might be mid-call on
|
|
||||||
// right now via its own pin()'d reference. Dropping
|
|
||||||
// the one real owning reference is what actually
|
|
||||||
// frees the object - immediately, if this thread's
|
|
||||||
// own `pinned` (about to go out of scope) was the
|
|
||||||
// last one outstanding; safely deferred otherwise.
|
|
||||||
pinned->server->removeFromSessionList(pinned.get());
|
|
||||||
}
|
|
||||||
} else if(TCPServer::isKnownListeningSocket(rawPtr)) {
|
|
||||||
// Known-immortal (see its own doc comment) - safe to call
|
|
||||||
// directly, unchanged from the original behavior. A
|
|
||||||
// listening socket's own eventReceived() returning false
|
|
||||||
// isn't something that happens in normal operation, but
|
|
||||||
// preserved as-is for parity with the pre-existing code.
|
|
||||||
Socket *rawSocket = (Socket *)rawPtr;
|
|
||||||
if(rawSocket->eventReceived(events[ix], ++ePoll.eventId)) {
|
|
||||||
// keep alive
|
|
||||||
} else {
|
|
||||||
rawSocket->shutDown = true;
|
|
||||||
delete rawSocket;
|
|
||||||
}
|
|
||||||
} else if(INotify::isKnownINotify(rawPtr)) {
|
|
||||||
// A third category of long-lived, non-TCPSession Socket -
|
|
||||||
// see INotify::isKnownINotify()'s own doc comment for the
|
|
||||||
// real, confirmed-live bug this fixes: every INotify event
|
|
||||||
// (e.g. BARANTMail's mail-queue delivery watch) previously
|
|
||||||
// fell all the way through to the "unrecognized" branch
|
|
||||||
// below and was silently dropped forever.
|
|
||||||
Socket *rawSocket = (Socket *)rawPtr;
|
|
||||||
if(rawSocket->eventReceived(events[ix], ++ePoll.eventId)) {
|
|
||||||
// keep alive
|
|
||||||
} else {
|
|
||||||
rawSocket->shutDown = true;
|
|
||||||
delete rawSocket;
|
|
||||||
}
|
|
||||||
} else {
|
|
||||||
// Neither registry recognizes this pointer - almost
|
|
||||||
// certainly a stale/duplicate epoll event for a
|
|
||||||
// TCPSession that has already been fully destroyed and
|
|
||||||
// unregistered elsewhere. There is nothing safe to do
|
|
||||||
// with it except leave it alone entirely.
|
|
||||||
coreutils::Log(coreutils::LOG_DEBUG_1) << "Ignoring stale/unrecognized epoll event (pointer " << rawPtr << ")";
|
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
if(thread)
|
|
||||||
thread->onThreadEnd();
|
|
||||||
|
|
||||||
coreutils::Log(coreutils::LOG_DEBUG_1) << "Thread ending with thread id " << threadId << ".";
|
coreutils::Log(coreutils::LOG_DEBUG_1) << "Thread ending with thread id " << threadId << ".";
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|||||||
@@ -1,10 +1,11 @@
|
|||||||
#ifndef __Thread_h__
|
#ifndef __Thread_h__
|
||||||
#define __Thread_h__
|
#define __Thread_h__
|
||||||
|
|
||||||
|
#include "includes"
|
||||||
#include "Log.h"
|
#include "Log.h"
|
||||||
|
#include "Object.h"
|
||||||
#include "TCPSession.h"
|
#include "TCPSession.h"
|
||||||
#include "ThreadScope.h"
|
#include "ThreadScope.h"
|
||||||
#include <thread>
|
|
||||||
|
|
||||||
namespace core {
|
namespace core {
|
||||||
|
|
||||||
@@ -18,7 +19,7 @@ namespace core {
|
|||||||
/// a Thread object for each thread specified in the EPoll's start method.
|
/// a Thread object for each thread specified in the EPoll's start method.
|
||||||
///
|
///
|
||||||
|
|
||||||
class Thread {
|
class Thread : public Object {
|
||||||
|
|
||||||
public:
|
public:
|
||||||
Thread(EPoll &ePoll);
|
Thread(EPoll &ePoll);
|
||||||
|
|||||||
@@ -3,34 +3,10 @@
|
|||||||
|
|
||||||
namespace core {
|
namespace core {
|
||||||
|
|
||||||
///
|
|
||||||
/// ThreadScope
|
|
||||||
///
|
|
||||||
/// Extension point for per-OS-thread setup/teardown in an EPoll worker
|
|
||||||
/// pool. EPoll's threads are long-lived (one persistent event loop per
|
|
||||||
/// thread, for the process's whole lifetime, not spawned per-request) -
|
|
||||||
/// onThreadStart() runs once at the top of each thread, before it
|
|
||||||
/// enters its event loop; onThreadEnd() runs once as that thread is
|
|
||||||
/// shutting down. A single ThreadScope instance is shared across every
|
|
||||||
/// worker thread (passed to EPoll::start()), so overrides should only
|
|
||||||
/// touch thread-LOCAL state from these hooks, never the ThreadScope
|
|
||||||
/// object's own fields, without their own synchronization.
|
|
||||||
///
|
|
||||||
/// Concrete motivating case: a C library that requires explicit
|
|
||||||
/// per-thread initialization before use from a multi-threaded program
|
|
||||||
/// (e.g. the MySQL client library's mysql_thread_init()/
|
|
||||||
/// mysql_thread_end() - see APIServer's MysqlThreadScope) has no other
|
|
||||||
/// clean way to hook into an EPoll worker thread's lifetime.
|
|
||||||
///
|
|
||||||
|
|
||||||
class ThreadScope {
|
class ThreadScope {
|
||||||
|
|
||||||
public:
|
public:
|
||||||
ThreadScope() {}
|
ThreadScope() {}
|
||||||
virtual ~ThreadScope() {}
|
|
||||||
|
|
||||||
virtual void onThreadStart() {}
|
|
||||||
virtual void onThreadEnd() {}
|
|
||||||
|
|
||||||
};
|
};
|
||||||
|
|
||||||
|
|||||||
@@ -1,18 +1,10 @@
|
|||||||
#include "Timer.h"
|
#include "Timer.h"
|
||||||
#include <sys/timerfd.h>
|
|
||||||
#include <math.h>
|
|
||||||
|
|
||||||
namespace core
|
namespace core
|
||||||
{
|
{
|
||||||
|
|
||||||
Timer::Timer(EPoll &ePoll, double delay = 0.0f) : Socket(ePoll, "Timer")
|
Timer::Timer(EPoll &ePoll, double delay = 0.0f) : Socket(ePoll, "Timer")
|
||||||
{
|
{
|
||||||
// See preventSelfDelete's own doc comment on Socket - a Timer is
|
|
||||||
// always a subobject of some larger composite (e.g. ZephoraSession
|
|
||||||
// : TCPSession, Timer), never a standalone connection, so its own
|
|
||||||
// eventReceived() must never be allowed to signal "delete me" to
|
|
||||||
// Thread::run()'s generic dispatch.
|
|
||||||
preventSelfDelete = true;
|
|
||||||
setDescriptor(timerfd_create(CLOCK_REALTIME, 0));
|
setDescriptor(timerfd_create(CLOCK_REALTIME, 0));
|
||||||
setTimer(delay);
|
setTimer(delay);
|
||||||
}
|
}
|
||||||
|
|||||||
@@ -1,8 +1,6 @@
|
|||||||
#include "UDPServerSocket.h"
|
#include "UDPServerSocket.h"
|
||||||
#include "EPoll.h"
|
#include "EPoll.h"
|
||||||
#include "TCPSession.h"
|
#include "TCPSession.h"
|
||||||
#include <sys/socket.h>
|
|
||||||
#include <netdb.h>
|
|
||||||
|
|
||||||
namespace core {
|
namespace core {
|
||||||
|
|
||||||
|
|||||||
@@ -28,7 +28,7 @@ else
|
|||||||
fi
|
fi
|
||||||
|
|
||||||
echo -n "Building library documentation manual..."
|
echo -n "Building library documentation manual..."
|
||||||
doxygen doxygen.sty >/dev/null 2>/dev/null
|
doxygen docs/latex/doxygen.sty >/dev/null 2>/dev/null
|
||||||
echo "OK"
|
echo "OK"
|
||||||
|
|
||||||
rm *.o
|
rm *.o
|
||||||
|
|||||||
@@ -0,0 +1,75 @@
|
|||||||
|
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
|
||||||
|
<html xmlns="http://www.w3.org/1999/xhtml">
|
||||||
|
<head>
|
||||||
|
<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
|
||||||
|
<meta http-equiv="X-UA-Compatible" content="IE=9"/>
|
||||||
|
<meta name="generator" content="Doxygen 1.8.13"/>
|
||||||
|
<meta name="viewport" content="width=device-width, initial-scale=1"/>
|
||||||
|
<title>BMA Server Framework: /home/barant/Documents/Development/BMASockets/BMAAccount.h Source File</title>
|
||||||
|
<link href="tabs.css" rel="stylesheet" type="text/css"/>
|
||||||
|
<script type="text/javascript" src="jquery.js"></script>
|
||||||
|
<script type="text/javascript" src="dynsections.js"></script>
|
||||||
|
<link href="search/search.css" rel="stylesheet" type="text/css"/>
|
||||||
|
<script type="text/javascript" src="search/searchdata.js"></script>
|
||||||
|
<script type="text/javascript" src="search/search.js"></script>
|
||||||
|
<link href="doxygen.css" rel="stylesheet" type="text/css" />
|
||||||
|
</head>
|
||||||
|
<body>
|
||||||
|
<div id="top"><!-- do not remove this div, it is closed by doxygen! -->
|
||||||
|
<div id="titlearea">
|
||||||
|
<table cellspacing="0" cellpadding="0">
|
||||||
|
<tbody>
|
||||||
|
<tr style="height: 56px;">
|
||||||
|
<td id="projectalign" style="padding-left: 0.5em;">
|
||||||
|
<div id="projectname">BMA Server Framework
|
||||||
|
</div>
|
||||||
|
</td>
|
||||||
|
</tr>
|
||||||
|
</tbody>
|
||||||
|
</table>
|
||||||
|
</div>
|
||||||
|
<!-- end header part -->
|
||||||
|
<!-- Generated by Doxygen 1.8.13 -->
|
||||||
|
<script type="text/javascript">
|
||||||
|
var searchBox = new SearchBox("searchBox", "search",false,'Search');
|
||||||
|
</script>
|
||||||
|
<script type="text/javascript" src="menudata.js"></script>
|
||||||
|
<script type="text/javascript" src="menu.js"></script>
|
||||||
|
<script type="text/javascript">
|
||||||
|
$(function() {
|
||||||
|
initMenu('',true,false,'search.php','Search');
|
||||||
|
$(document).ready(function() { init_search(); });
|
||||||
|
});
|
||||||
|
</script>
|
||||||
|
<div id="main-nav"></div>
|
||||||
|
</div><!-- top -->
|
||||||
|
<!-- window showing the filter options -->
|
||||||
|
<div id="MSearchSelectWindow"
|
||||||
|
onmouseover="return searchBox.OnSearchSelectShow()"
|
||||||
|
onmouseout="return searchBox.OnSearchSelectHide()"
|
||||||
|
onkeydown="return searchBox.OnSearchSelectKey(event)">
|
||||||
|
</div>
|
||||||
|
|
||||||
|
<!-- iframe showing the search results (closed by default) -->
|
||||||
|
<div id="MSearchResultsWindow">
|
||||||
|
<iframe src="javascript:void(0)" frameborder="0"
|
||||||
|
name="MSearchResults" id="MSearchResults">
|
||||||
|
</iframe>
|
||||||
|
</div>
|
||||||
|
|
||||||
|
<div class="header">
|
||||||
|
<div class="headertitle">
|
||||||
|
<div class="title">/home/barant/Documents/Development/BMASockets/BMAAccount.h</div> </div>
|
||||||
|
</div><!--header-->
|
||||||
|
<div class="contents">
|
||||||
|
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<tr class="memitem:"><td class="memItemLeft" align="right" valign="top">class  </td><td class="memItemRight" valign="bottom"><a class="el" href="class_b_m_a_authenticate.html">BMAAuthenticate</a></td></tr>
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="preprocessor">#ifndef __BMAAuthenticate_h__</span></div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="preprocessor">#define __BMAAuthenticate_h__</span></div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span> </div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="preprocessor">#include "includes"</span></div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="preprocessor">#include "BMASession.h"</span></div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span> </div><div class="line"><a name="l00007"></a><span class="lineno"><a class="line" href="class_b_m_a_authenticate.html"> 7</a></span> <span class="keyword">class </span><a class="code" href="class_b_m_a_authenticate.html">BMAAuthenticate</a> : <span class="keyword">public</span> <a class="code" href="class_b_m_a_object.html">BMAObject</a> {</div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span> </div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span>  <a class="code" href="class_b_m_a_authenticate.html">BMAAuthenticate</a>(<a class="code" href="class_b_m_a_session.html">BMASession</a> *session);</div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span>  ~<a class="code" href="class_b_m_a_authenticate.html">BMAAuthenticate</a>();</div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> </div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span>  <span class="keywordtype">void</span> onStart();</div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span>  <span class="keywordtype">void</span> onDataReceived(<span class="keywordtype">char</span> *data, <span class="keywordtype">int</span> length);</div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span>  <span class="keywordtype">void</span> onEnd();</div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span>  </div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> };</div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> </div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="preprocessor">#endif</span></div><div class="ttc" id="class_b_m_a_session_html"><div class="ttname"><a href="class_b_m_a_session.html">BMASession</a></div><div class="ttdef"><b>Definition:</b> BMASession.h:18</div></div>
|
||||||
|
<div class="ttc" id="class_b_m_a_object_html"><div class="ttname"><a href="class_b_m_a_object.html">BMAObject</a></div><div class="ttdef"><b>Definition:</b> BMAObject.h:6</div></div>
|
||||||
|
<div class="ttc" id="class_b_m_a_authenticate_html"><div class="ttname"><a href="class_b_m_a_authenticate.html">BMAAuthenticate</a></div><div class="ttdef"><b>Definition:</b> BMAAuthenticate.h:7</div></div>
|
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="preprocessor">#ifndef BMACommand_h__</span></div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="preprocessor">#define BMACommand_h__</span></div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span> </div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="preprocessor">#include "includes"</span></div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="preprocessor">#include "BMAObject.h"</span></div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="keyword">class </span><a class="code" href="class_b_m_a_session.html">BMASession</a>;</div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span> </div><div class="line"><a name="l00008"></a><span class="lineno"><a class="line" href="class_b_m_a_command.html"> 8</a></span> <span class="keyword">class </span><a class="code" href="class_b_m_a_command.html">BMACommand</a> : <span class="keyword">public</span> <a class="code" href="class_b_m_a_object.html">BMAObject</a> {</div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span>  </div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span>  <a class="code" href="class_b_m_a_command.html">BMACommand</a>(std::string commandName);</div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span>  ~<a class="code" href="class_b_m_a_command.html">BMACommand</a>(); </div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span>  </div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span>  std::string commandName;</div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> </div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span>  <span class="keyword">virtual</span> <span class="keywordtype">void</span> processCommand(std::string command, <a class="code" href="class_b_m_a_session.html">BMASession</a> *session) = 0;</div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span>  <span class="keyword">virtual</span> <span class="keywordtype">void</span> output(<a class="code" href="class_b_m_a_session.html">BMASession</a> *session);</div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> </div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span> };</div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span> </div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="preprocessor">#endif</span></div><div class="ttc" id="class_b_m_a_command_html"><div class="ttname"><a href="class_b_m_a_command.html">BMACommand</a></div><div class="ttdef"><b>Definition:</b> BMACommand.h:8</div></div>
|
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<div class="ttc" id="class_b_m_a_session_html"><div class="ttname"><a href="class_b_m_a_session.html">BMASession</a></div><div class="ttdef"><b>Definition:</b> BMASession.h:18</div></div>
|
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|
<div class="ttc" id="class_b_m_a_object_html"><div class="ttname"><a href="class_b_m_a_object.html">BMAObject</a></div><div class="ttdef"><b>Definition:</b> BMAObject.h:6</div></div>
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="preprocessor">#ifndef __BMACommandSession_h__</span></div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="preprocessor">#define __BMACommandSession_h__</span></div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span> </div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="preprocessor">#include "BMASession.h"</span></div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span> </div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span> </div><div class="line"><a name="l00014"></a><span class="lineno"><a class="line" href="class_b_m_a_command_session.html"> 14</a></span> <span class="keyword">class </span><a class="code" href="class_b_m_a_command_session.html">BMACommandSession</a> : <span class="keyword">public</span> <a class="code" href="class_b_m_a_session.html">BMASession</a> {</div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span>  </div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span>  <a class="code" href="class_b_m_a_command_session.html">BMACommandSession</a>(<a class="code" href="class_b_m_a_e_poll.html">BMAEPoll</a> &ePoll);</div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span>  ~<a class="code" href="class_b_m_a_command_session.html">BMACommandSession</a>(); </div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span>  </div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment">// string command;</span></div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span>  </div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span>  <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="class_b_m_a_command_session.html#a72e11ea685f9bbc32f66d42ab5a1627d">output</a>(stringstream &out);</div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span> </div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span>  <span class="keyword">protected</span>:</div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="comment">// virtual void onConnected(); </span></div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="comment">// virtual void onDataReceived(char *data, int length); </span></div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span>  <span class="keywordtype">void</span> protocol(<span class="keywordtype">char</span> *data, <span class="keywordtype">int</span> length) <span class="keyword">override</span>; </div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span>  </div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span>  <span class="keyword">private</span>:</div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  <span class="keyword">enum</span> Status {WELCOME, PROMPT, INPUT, PROCESS, DONE};</div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  Status status = WELCOME; </div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  </div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span> };</div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span> </div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="preprocessor">#endif</span></div><div class="ttc" id="class_b_m_a_e_poll_html"><div class="ttname"><a href="class_b_m_a_e_poll.html">BMAEPoll</a></div><div class="ttdef"><b>Definition:</b> BMAEPoll.h:29</div></div>
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|
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<div class="textblock"><code>#include "<a class="el" href="_b_m_a_e_poll_8h_source.html">BMAEPoll.h</a>"</code><br />
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<code>#include "<a class="el" href="_b_m_a_console_8h_source.html">BMAConsole.h</a>"</code><br />
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<div class="textblock"><code>#include "<a class="el" href="_b_m_a_t_c_p_server_socket_8h_source.html">BMATCPServerSocket.h</a>"</code><br />
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<code>#include "<a class="el" href="_b_m_a_console_command_8h_source.html">BMAConsoleCommand.h</a>"</code><br />
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="preprocessor">#ifndef BMAConsole_h__</span></div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="preprocessor">#define BMAConsole_h__</span></div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span> </div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="preprocessor">#include "includes"</span></div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="preprocessor">#include "BMATCPServerSocket.h"</span></div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment">//#include "BMACommand.h"</span></div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="keyword">class </span><a class="code" href="class_b_m_a_t_c_p_socket.html">BMATCPSocket</a>;</div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span> </div><div class="line"><a name="l00009"></a><span class="lineno"><a class="line" href="class_b_m_a_console.html"> 9</a></span> <span class="keyword">class </span><a class="code" href="class_b_m_a_console.html">BMAConsole</a> : <span class="keyword">public</span> <a class="code" href="class_b_m_a_t_c_p_server_socket.html">BMATCPServerSocket</a> {</div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span>  </div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span>  <a class="code" href="class_b_m_a_console.html">BMAConsole</a>(<a class="code" href="class_b_m_a_e_poll.html">BMAEPoll</a> &ePoll, <span class="keywordtype">string</span> url, <span class="keywordtype">short</span> <span class="keywordtype">int</span> port);</div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span>  ~<a class="code" href="class_b_m_a_console.html">BMAConsole</a>(); </div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> </div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span>  <a class="code" href="class_b_m_a_session.html">BMASession</a> * getSocketAccept();</div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span> </div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment">// void registerCommand(BMACommand &command);</span></div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> </div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment">// vector<BMACommand *> commands; </span></div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span>  </div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="comment">// void protocolHandler() {</span></div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span>  </div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="comment">// BMAAnnouncer announcer("Welcome to BMA Server Framework console.\n"); </span></div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="comment">// addProtocol(announcer);</span></div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="comment">// BMACommandProcessor commandProcess();</span></div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span>  </div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="comment">// }</span></div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span> </div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span> };</div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span> </div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="preprocessor">#endif</span></div><div class="ttc" id="class_b_m_a_t_c_p_socket_html"><div class="ttname"><a href="class_b_m_a_t_c_p_socket.html">BMATCPSocket</a></div><div class="ttdef"><b>Definition:</b> BMATCPSocket.h:17</div></div>
|
||||||
|
<div class="ttc" id="class_b_m_a_console_html"><div class="ttname"><a href="class_b_m_a_console.html">BMAConsole</a></div><div class="ttdef"><b>Definition:</b> BMAConsole.h:9</div></div>
|
||||||
|
<div class="ttc" id="class_b_m_a_t_c_p_server_socket_html"><div class="ttname"><a href="class_b_m_a_t_c_p_server_socket.html">BMATCPServerSocket</a></div><div class="ttdef"><b>Definition:</b> BMATCPServerSocket.h:15</div></div>
|
||||||
|
<div class="ttc" id="class_b_m_a_e_poll_html"><div class="ttname"><a href="class_b_m_a_e_poll.html">BMAEPoll</a></div><div class="ttdef"><b>Definition:</b> BMAEPoll.h:29</div></div>
|
||||||
|
<div class="ttc" id="class_b_m_a_session_html"><div class="ttname"><a href="class_b_m_a_session.html">BMASession</a></div><div class="ttdef"><b>Definition:</b> BMASession.h:16</div></div>
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<div class="textblock"><code>#include "<a class="el" href="_b_m_a_console_command_8h_source.html">BMAConsoleCommand.h</a>"</code><br />
|
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<code>#include "<a class="el" href="_b_m_a_console_session_8h_source.html">BMAConsoleSession.h</a>"</code><br />
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<a href="_b_m_a_console_command_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="preprocessor">#ifndef BMAConsoleCommand_h__</span></div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="preprocessor">#define BMAConsoleCommand_h__</span></div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span> </div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="preprocessor">#include "includes"</span></div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="keyword">class </span><a class="code" href="class_b_m_a_console_session.html">BMAConsoleSession</a>;</div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span> </div><div class="line"><a name="l00007"></a><span class="lineno"><a class="line" href="class_b_m_a_console_command.html"> 7</a></span> <span class="keyword">class </span><a class="code" href="class_b_m_a_console_command.html">BMAConsoleCommand</a> {</div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span>  </div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span>  <a class="code" href="class_b_m_a_console_command.html#a318938fc38946e3f2e5d606e84784754">BMAConsoleCommand</a>(<span class="keywordtype">string</span> <a class="code" href="class_b_m_a_console_command.html#a5c003e975e6d63f83e5131e5b8df758f">commandName</a>);</div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span>  <a class="code" href="class_b_m_a_console_command.html#a909dee1bc6659e50d95fa3d43526557a">~BMAConsoleCommand</a>(); </div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span>  </div><div class="line"><a name="l00013"></a><span class="lineno"><a class="line" href="class_b_m_a_console_command.html#a5c003e975e6d63f83e5131e5b8df758f"> 13</a></span>  <span class="keywordtype">string</span> <a class="code" href="class_b_m_a_console_command.html#a5c003e975e6d63f83e5131e5b8df758f">commandName</a>;</div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> </div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span>  <span class="keyword">virtual</span> <span class="keywordtype">int</span> <a class="code" href="class_b_m_a_console_command.html#a0822dab9f44e4a046ff7bb4ab997170e">processCommand</a>(<a class="code" href="class_b_m_a_console_session.html">BMAConsoleSession</a> *session);</div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span> </div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> };</div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> </div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="preprocessor">#endif</span></div><div class="ttc" id="class_b_m_a_console_command_html_a318938fc38946e3f2e5d606e84784754"><div class="ttname"><a href="class_b_m_a_console_command.html#a318938fc38946e3f2e5d606e84784754">BMAConsoleCommand::BMAConsoleCommand</a></div><div class="ttdeci">BMAConsoleCommand(string commandName)</div><div class="ttdef"><b>Definition:</b> BMAConsoleCommand.cpp:4</div></div>
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|
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<div class="ttc" id="class_b_m_a_console_command_html"><div class="ttname"><a href="class_b_m_a_console_command.html">BMAConsoleCommand</a></div><div class="ttdef"><b>Definition:</b> BMAConsoleCommand.h:7</div></div>
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<div class="ttc" id="class_b_m_a_console_session_html"><div class="ttname"><a href="class_b_m_a_console_session.html">BMAConsoleSession</a></div><div class="ttdef"><b>Definition:</b> BMAConsoleSession.h:7</div></div>
|
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|
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="preprocessor">#ifndef BMAConsoleServer_h__</span></div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="preprocessor">#define BMAConsoleServer_h__</span></div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span> </div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="preprocessor">#include "includes"</span></div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="preprocessor">#include "BMATCPServerSocket.h"</span></div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="preprocessor">#include "BMACommand.h"</span></div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="keyword">class </span><a class="code" href="class_b_m_a_t_c_p_socket.html">BMATCPSocket</a>;</div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span> </div><div class="line"><a name="l00009"></a><span class="lineno"><a class="line" href="class_b_m_a_console_server.html"> 9</a></span> <span class="keyword">class </span><a class="code" href="class_b_m_a_console_server.html">BMAConsoleServer</a> : <span class="keyword">public</span> <a class="code" href="class_b_m_a_t_c_p_server_socket.html">BMATCPServerSocket</a> {</div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span>  </div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span>  <a class="code" href="class_b_m_a_console_server.html">BMAConsoleServer</a>(<a class="code" href="class_b_m_a_e_poll.html">BMAEPoll</a> &ePoll, std::string url, <span class="keywordtype">short</span> <span class="keywordtype">int</span> port);</div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span>  ~<a class="code" href="class_b_m_a_console_server.html">BMAConsoleServer</a>(); </div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> </div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span>  <span class="keywordtype">void</span> sendToConnectedConsoles(std::string out);</div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span> </div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span>  <a class="code" href="class_b_m_a_session.html">BMASession</a> * <a class="code" href="class_b_m_a_console_server.html#a94847bdd07f651825e5fce5237e98335">getSocketAccept</a>() <span class="keyword">override</span>;</div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> </div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span>  <span class="keywordtype">void</span> registerCommand(<a class="code" href="class_b_m_a_command.html">BMACommand</a> &command);</div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span> </div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span>  <span class="keywordtype">void</span> <a class="code" href="class_b_m_a_console_server.html#aa148f8b49c4460f06ca92bf05c786239">output</a>(<a class="code" href="class_b_m_a_session.html">BMASession</a> *session) <span class="keyword">override</span>; </div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span> </div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span>  std::vector<BMACommand *> commands; </div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span>  </div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span> };</div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span> </div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="preprocessor">#endif</span></div><div class="ttc" id="class_b_m_a_t_c_p_socket_html"><div class="ttname"><a href="class_b_m_a_t_c_p_socket.html">BMATCPSocket</a></div><div class="ttdef"><b>Definition:</b> BMATCPSocket.h:18</div></div>
|
||||||
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<div class="ttc" id="class_b_m_a_t_c_p_server_socket_html"><div class="ttname"><a href="class_b_m_a_t_c_p_server_socket.html">BMATCPServerSocket</a></div><div class="ttdef"><b>Definition:</b> BMATCPServerSocket.h:20</div></div>
|
||||||
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<div class="ttc" id="class_b_m_a_e_poll_html"><div class="ttname"><a href="class_b_m_a_e_poll.html">BMAEPoll</a></div><div class="ttdef"><b>Definition:</b> BMAEPoll.h:29</div></div>
|
||||||
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<div class="ttc" id="class_b_m_a_command_html"><div class="ttname"><a href="class_b_m_a_command.html">BMACommand</a></div><div class="ttdef"><b>Definition:</b> BMACommand.h:8</div></div>
|
||||||
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<div class="ttc" id="class_b_m_a_console_server_html"><div class="ttname"><a href="class_b_m_a_console_server.html">BMAConsoleServer</a></div><div class="ttdef"><b>Definition:</b> BMAConsoleServer.h:9</div></div>
|
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<div class="ttc" id="class_b_m_a_console_server_html_a94847bdd07f651825e5fce5237e98335"><div class="ttname"><a href="class_b_m_a_console_server.html#a94847bdd07f651825e5fce5237e98335">BMAConsoleServer::getSocketAccept</a></div><div class="ttdeci">BMASession * getSocketAccept() override</div><div class="ttdef"><b>Definition:</b> BMAConsoleServer.cpp:21</div></div>
|
||||||
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<div class="ttc" id="class_b_m_a_console_server_html_aa148f8b49c4460f06ca92bf05c786239"><div class="ttname"><a href="class_b_m_a_console_server.html#aa148f8b49c4460f06ca92bf05c786239">BMAConsoleServer::output</a></div><div class="ttdeci">void output(BMASession *session) override</div><div class="ttdoc">Output the consoles array to the console. </div><div class="ttdef"><b>Definition:</b> BMAConsoleServer.cpp:29</div></div>
|
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<div class="ttc" id="class_b_m_a_session_html"><div class="ttname"><a href="class_b_m_a_session.html">BMASession</a></div><div class="ttdef"><b>Definition:</b> BMASession.h:18</div></div>
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<div class="title">/home/barant/Documents/Development/BMASockets/BMAConsoleSession.h File Reference</div> </div>
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||||||
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