Brad Arant
cd5e0a9905
IMAP (RFC 3501): LOGIN through UID, previously all stubs except CAPABILITY/LOGOUT/a partial APPEND. Multi-folder support with per-folder UID/flag indexing (new MailFolder class, backed by .uidvalidity/.uidnext/ .imapindex sidecar files), ENVELOPE support (new MessageHeaders class: header parsing, address-list parsing, IMAP quoting), and shared cursor-based argument parsing (new IMAPArgs class: sequence sets, flag lists, dates, folder-name normalization, and path-traversal protection via isValidFolderName - a bare ".." folder name would otherwise resolve into a sibling user's mailbox directory). POP3 (RFC 1939): USER through QUIT, previously only CAPA. Added UIDL. POP3 handlers use cursor-based parsing throughout rather than indexed access - ZString's copy constructor doesn't copy its `list` field, and POP3's dispatch passes the request by value, so indexed access into a copy was silently reading nothing. SMTP: DMARC evaluation added to the DATA-terminator path (DKIM verification + alignment/policy, Authentication-Results header, conditional rejection matching RFC 7489 6.3's p=reject + sampled pct=). AUTH LOGIN now handles RFC 4954's optional inline initial response (e.g. Python smtplib's "AUTH LOGIN <base64>" in one line) instead of only the exact three-line form. Outbound relay now forces IPv4 (AF_INET) instead of AF_UNSPEC - this server's IPv4 has a correct PTR record and SPF coverage, its IPv6 doesn't, and Gmail was rejecting outbound mail with 550 5.7.25 as a result. Delivery pipeline: local delivery now runs the message through SpamAssassin (new SpamAssassinFilter class, speaking spamd's PROCESS protocol directly over a raw socket - fails open/delivers unscanned if spamd is unreachable) instead of a plain hardlink, since scanning can tag/modify content. BARANTMailConfig: extracted config loading into its own class. compile: (see individual file changes - build script adjustments to match the above). Deliberately excluded from this commit: barantmail.log/ barantmail-service.log (operational logs, not source - barantmail.log in particular was the runaway 55GB/12.9GB file from a busy-loop bug fixed separately in ServerCore) and barantmail.cfg (this server's own live deployment config, matching how APIServer's equivalent config also stays untracked).
81 lines
2.5 KiB
C++
81 lines
2.5 KiB
C++
#include "__IMAP_STORE.h"
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#include "IMAPArgs.h"
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#include "IMAPServer.h"
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#include <algorithm>
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#include <cctype>
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namespace mail {
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namespace {
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std::string joinFlags(const std::vector<std::string> &flags) {
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std::string out;
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for (size_t i = 0; i < flags.size(); ++i) {
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if (i > 0)
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out += " ";
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out += flags[i];
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}
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return out;
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}
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}
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int storeImpl(coreutils::ZString &request, IMAPSession &session, IMAPServer &server, bool uidMode) {
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if (session.state != IMAPSession::SELECTED) {
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session.out << session.tag << " NO No mailbox selected" << CRLF;
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return 1;
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}
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if (session.readOnly) {
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session.out << session.tag << " NO Mailbox is read-only" << CRLF;
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return 1;
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}
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std::vector<uint32_t> uids = IMAPArgs::parseSequenceSet(request, session.mailbox, uidMode);
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coreutils::ZString modeArg = IMAPArgs::nextArgument(request);
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std::string mode = modeArg.str();
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bool silent = false;
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// Strip a trailing ".SILENT" (case-insensitive) before inspecting
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// the leading +/- sign.
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if (mode.size() >= 7) {
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std::string tail = mode.substr(mode.size() - 7);
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for (char &c : tail)
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c = std::toupper((unsigned char)c);
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if (tail == ".SILENT") {
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silent = true;
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mode = mode.substr(0, mode.size() - 7);
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}
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}
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char sign = mode.empty() ? '=' : mode[0];
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std::vector<std::string> flags = IMAPArgs::parseFlagList(request);
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for (uint32_t uid : uids) {
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MailFolder::Message *message = session.mailbox.find(uid);
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if (!message)
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continue;
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if (sign == '+')
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session.mailbox.addFlags(uid, flags);
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else if (sign == '-')
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session.mailbox.removeFlags(uid, flags);
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else
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session.mailbox.setFlags(uid, flags);
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if (!silent) {
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uint32_t seqNum = session.mailbox.seq(uid);
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session.out << "* " << (int)seqNum << " FETCH (FLAGS (" << joinFlags(message->flags) << ")";
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if (uidMode)
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session.out << " UID " << (int)uid;
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session.out << ")" << CRLF;
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}
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}
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session.out << session.tag << " OK " << (uidMode ? "UID STORE" : "STORE") << " completed" << CRLF;
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return 1;
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}
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int __IMAP_STORE::processCommand(coreutils::ZString &request, IMAPSession &session, IMAPServer &server) {
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return storeImpl(request, session, server, false);
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}
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}
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