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).
58 lines
2.0 KiB
C++
58 lines
2.0 KiB
C++
#include "__IMAP_LIST.h"
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#include "IMAPArgs.h"
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#include "IMAPServer.h"
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namespace mail {
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bool imapListPatternMatch(const std::string &pattern, const std::string &name) {
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size_t p = 0, n = 0, star = std::string::npos, matchPos = 0;
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while (n < name.size()) {
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if (p < pattern.size() && pattern[p] == name[n]) {
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++p; ++n;
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} else if (p < pattern.size() && (pattern[p] == '*' || pattern[p] == '%')) {
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star = p;
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matchPos = n;
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++p;
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} else if (star != std::string::npos) {
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p = star + 1;
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++matchPos;
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n = matchPos;
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} else {
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return false;
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}
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}
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while (p < pattern.size() && (pattern[p] == '*' || pattern[p] == '%'))
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++p;
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return p == pattern.size();
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}
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int __IMAP_LIST::processCommand(coreutils::ZString &request, IMAPSession &session, IMAPServer &server) {
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if (session.state == IMAPSession::NOT_AUTHENTICATED) {
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session.out << session.tag << " NO Not authenticated" << CRLF;
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return 1;
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}
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IMAPArgs::nextArgument(request); // reference name - unused, no folder hierarchy to resolve against
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coreutils::ZString patArg = IMAPArgs::nextArgument(request);
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std::string pattern = IMAPArgs::unwrap(patArg);
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if (pattern.empty()) {
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// RFC 3501 6.3.8: an empty mailbox name means "return the
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// hierarchy delimiter and the root name only".
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session.out << "* LIST (\\Noselect) \"/\" \"\"" << CRLF;
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session.out << session.tag << " OK LIST completed" << CRLF;
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return 1;
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}
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coreutils::ZString userNameZ(session.userName);
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for (coreutils::MString &folder : server.mailFileSystem.listFolders(userNameZ)) {
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std::string name = folder.str();
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if (imapListPatternMatch(pattern, name))
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session.out << "* LIST (\\HasNoChildren) \"/\" \"" << name << "\"" << CRLF;
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}
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session.out << session.tag << " OK LIST completed" << CRLF;
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return 1;
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}
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}
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