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).
57 lines
1.8 KiB
C++
57 lines
1.8 KiB
C++
#ifndef __POP3Session_h__
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#define __POP3Session_h__
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#include "TCPServer.h"
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#include "TCPSession.h"
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#include "MailFolder.h"
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#include <set>
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#define CRLF "\r\n"
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namespace mail {
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class POP3Session : public core::TCPSession {
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public:
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POP3Session(core::EPoll &ePoll, core::TCPServer &server)
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: TCPSession(ePoll, &server, "POP3 Client Session") {}
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std::string clientDomainName;
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// RFC 1939 4/7: USER sets the pending username and replies +OK
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// without checking anything - only PASS actually authenticates
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// (against MailFileSystem::checkPassword(), shared with SMTP AUTH
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// and IMAP LOGIN). userName is meaningless until PASS succeeds;
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// authenticated gates every other command per RFC 1939 3's state
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// diagram (AUTHORIZATION vs TRANSACTION state).
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std::string userName;
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bool authenticated = false;
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// Loaded once, right after a successful PASS - POP3 has no
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// folder concept (RFC 1939 has no SELECT-equivalent), it only
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// ever operates on Inbox. RFC 1939 3's "maildrop" message
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// numbering is fixed for the whole session (assigned once here,
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// not re-derived per command) even if new mail is delivered
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// mid-session - deletedMarks/QUIT below follow the same
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// session-frozen-snapshot model.
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MailFolder mailbox;
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// RFC 1939 3: DELE only MARKS a message deleted - the mark (and
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// any RSET undoing it) is session-local and has no effect until
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// QUIT actually commits it by unlinking the marked messages.
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// Keyed by 1-based POP3 message number (this session's frozen
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// ordering), not UID.
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std::set<int> deletedMarks;
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// RFC 1939 4: the server must send a positive greeting before the
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// client sends anything.
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void onConnected() override {
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out << "+OK POP3 server ready" << CRLF;
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}
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};
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}
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#endif
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