2 * This module is an SMTP and ESMTP implementation for the Citadel system.
3 * It is compliant with all of the following:
5 * RFC 821 - Simple Mail Transfer Protocol
6 * RFC 876 - Survey of SMTP Implementations
7 * RFC 1047 - Duplicate messages and SMTP
8 * RFC 1652 - 8 bit MIME
9 * RFC 1869 - Extended Simple Mail Transfer Protocol
10 * RFC 1870 - SMTP Service Extension for Message Size Declaration
11 * RFC 2033 - Local Mail Transfer Protocol
12 * RFC 2197 - SMTP Service Extension for Command Pipelining
13 * RFC 2476 - Message Submission
14 * RFC 2487 - SMTP Service Extension for Secure SMTP over TLS
15 * RFC 2554 - SMTP Service Extension for Authentication
16 * RFC 2821 - Simple Mail Transfer Protocol
17 * RFC 2822 - Internet Message Format
18 * RFC 2920 - SMTP Service Extension for Command Pipelining
20 * The VRFY and EXPN commands have been removed from this implementation
21 * because nobody uses these commands anymore, except for spammers.
23 * Copyright (c) 1998-2009 by the citadel.org team
25 * This program is free software; you can redistribute it and/or modify
26 * it under the terms of the GNU General Public License as published by
27 * the Free Software Foundation; either version 3 of the License, or
28 * (at your option) any later version.
30 * This program is distributed in the hope that it will be useful,
31 * but WITHOUT ANY WARRANTY; without even the implied warranty of
32 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
33 * GNU General Public License for more details.
35 * You should have received a copy of the GNU General Public License
36 * along with this program; if not, write to the Free Software
37 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
49 #include <sys/types.h>
52 #if TIME_WITH_SYS_TIME
53 # include <sys/time.h>
57 # include <sys/time.h>
66 #include <sys/socket.h>
67 #include <netinet/in.h>
68 #include <arpa/inet.h>
69 #include <libcitadel.h>
72 #include "citserver.h"
79 #include "internet_addressing.h"
82 #include "clientsocket.h"
83 #include "locate_host.h"
84 #include "citadel_dirs.h"
86 #include "ctdl_module.h"
88 #include "smtp_util.h"
89 #include "event_client.h"
90 #include "smtpqueue.h"
92 #ifdef EXPERIMENTAL_SMTP_EVENT_CLIENT
93 /*****************************************************************************/
94 /* SMTP CLIENT (OUTBOUND PROCESSING) STUFF */
95 /*****************************************************************************/
97 typedef enum _eSMTP_C_States {
111 const double SMTP_C_ConnTimeout = 300.; /* wail 1 minute for connections... */
112 const double SMTP_C_ReadTimeouts[eMaxSMTPC] = {
113 300., /* Greeting... */
121 90., /* end of body... */
124 const double SMTP_C_SendTimeouts[eMaxSMTPC] = {
125 90., /* Greeting... */
133 900., /* end of body... */
137 static const ConstStr ReadErrors[eMaxSMTPC] = {
138 {HKEY("Connection broken during SMTP conversation")},
139 {HKEY("Connection broken during SMTP EHLO")},
140 {HKEY("Connection broken during SMTP HELO")},
141 {HKEY("Connection broken during SMTP AUTH")},
142 {HKEY("Connection broken during SMTP MAIL FROM")},
143 {HKEY("Connection broken during SMTP RCPT")},
144 {HKEY("Connection broken during SMTP DATA")},
145 {HKEY("Connection broken during SMTP message transmit")},
146 {HKEY("")}/* quit reply, don't care. */
150 typedef struct _stmp_out_msg {
151 MailQEntry *MyQEntry;
156 eSMTP_C_States State;
158 struct ares_mx_reply *AllMX;
159 struct ares_mx_reply *CurrMX;
163 struct hostent *OneMX;
166 ParsedURL *pCurrRelay;
175 void DeleteSmtpOutMsg(void *v)
179 ares_free_data(Msg->AllMX);
181 FreeStrBuf(&Msg->msgtext);
182 FreeAsyncIOContents(&Msg->IO);
186 eNextState SMTP_C_Timeout(AsyncIO *IO);
187 eNextState SMTP_C_ConnFail(AsyncIO *IO);
188 eNextState SMTP_C_DispatchReadDone(AsyncIO *IO);
189 eNextState SMTP_C_DispatchWriteDone(AsyncIO *IO);
190 eNextState SMTP_C_Terminate(AsyncIO *IO);
191 eReadState SMTP_C_ReadServerStatus(AsyncIO *IO);
193 typedef eNextState (*SMTPReadHandler)(SmtpOutMsg *Msg);
194 typedef eNextState (*SMTPSendHandler)(SmtpOutMsg *Msg);
197 #define SMTP_ERROR(WHICH_ERR, ERRSTR) do {\
198 SendMsg->MyQEntry->Status = WHICH_ERR; \
199 StrBufAppendBufPlain(SendMsg->MyQEntry->StatusMessage, HKEY(ERRSTR), 0); \
203 #define SMTP_VERROR(WHICH_ERR) do {\
204 SendMsg->MyQEntry->Status = WHICH_ERR; \
205 StrBufPlain(SendMsg->MyQEntry->StatusMessage, \
206 ChrPtr(SendMsg->IO.IOBuf) + 4, \
207 StrLength(SendMsg->IO.IOBuf) - 4); \
211 #define SMTP_IS_STATE(WHICH_STATE) (ChrPtr(SendMsg->IO.IOBuf)[0] == WHICH_STATE)
213 #define SMTP_DBG_SEND() CtdlLogPrintf(CTDL_DEBUG, "SMTP client[%ld]: > %s\n", SendMsg->n, ChrPtr(SendMsg->IO.SendBuf.Buf))
214 #define SMTP_DBG_READ() CtdlLogPrintf(CTDL_DEBUG, "SMTP client[%ld]: < %s\n", SendMsg->n, ChrPtr(SendMsg->IO.IOBuf))
217 void FinalizeMessageSend(SmtpOutMsg *Msg)
219 CtdlLogPrintf(CTDL_DEBUG, "SMTP: %s\n", __FUNCTION__);
221 if (DecreaseQReference(Msg->MyQItem))
226 nRemain = CountActiveQueueEntries(Msg->MyQItem);
228 MsgData = SerializeQueueItem(Msg->MyQItem);
230 * Uncompleted delivery instructions remain, so delete the old
231 * instructions and replace with the updated ones.
233 CtdlDeleteMessages(SMTP_SPOOLOUT_ROOM, &Msg->MyQItem->QueMsgID, 1, "");
234 smtpq_do_bounce(Msg->MyQItem,
237 struct CtdlMessage *msg;
238 msg = malloc(sizeof(struct CtdlMessage));
239 memset(msg, 0, sizeof(struct CtdlMessage));
240 msg->cm_magic = CTDLMESSAGE_MAGIC;
241 msg->cm_anon_type = MES_NORMAL;
242 msg->cm_format_type = FMT_RFC822;
243 msg->cm_fields['M'] = SmashStrBuf(&MsgData);
244 CtdlSubmitMsg(msg, NULL, SMTP_SPOOLOUT_ROOM, QP_EADDR);
245 CtdlFreeMessage(msg);
248 CtdlDeleteMessages(SMTP_SPOOLOUT_ROOM, &Msg->MyQItem->MessageID, 1, "");
249 FreeStrBuf(&MsgData);
252 RemoveQItem(Msg->MyQItem);
254 DeleteSmtpOutMsg(Msg);
258 void SetConnectStatus(AsyncIO *IO)
261 SmtpOutMsg *SendMsg = IO->Data;
268 src = &IO->Addr.sin6_addr;
271 unsigned long psaddr;
272 struct sockaddr_in *addr = (struct sockaddr_in *)&IO->Addr;
274 src = &addr->sin_addr.s_addr;
275 memcpy(&psaddr, &addr->sin_addr.s_addr, sizeof(psaddr));
276 /// psaddr = ntohl(psaddr);
278 CtdlLogPrintf(CTDL_DEBUG,
279 "SMTP client[%ld]: connecting to %s [%ld.%ld.%ld.%ld:%d] ...\n",
282 (psaddr >> 24) & 0xFF,
283 (psaddr >> 16) & 0xFF,
284 (psaddr >> 8) & 0xFF,
285 (psaddr >> 0) & 0xFF,
288 SendMsg->MyQEntry->Status = 5;
289 StrBufPrintf(SendMsg->MyQEntry->StatusMessage,
290 "Timeout while connecting %s [%ld.%ld.%ld.%ld:%d] ",
292 (psaddr >> 24) & 0xFF,
293 (psaddr >> 16) & 0xFF,
294 (psaddr >> 8) & 0xFF,
295 (psaddr >> 0) & 0xFF,
301 inet_ntop((IO->IP6)?AF_INET6:AF_INET,
305 CtdlLogPrintf(CTDL_DEBUG,
306 "SMTP client[%ld]: connecting to %s [%s]:%d ...\n",
312 SendMsg->MyQEntry->Status = 5;
313 StrBufPrintf(SendMsg->MyQEntry->StatusMessage,
314 "Timeout while connecting %s [%s]:%d ",
320 eNextState mx_connect_relay_ip(AsyncIO *IO)
323 SmtpOutMsg *SendMsg = IO->Data;
325 CtdlLogPrintf(CTDL_DEBUG, "SMTP: %s\n", __FUNCTION__);
327 IO->IP6 = SendMsg->pCurrRelay->af == AF_INET6;
329 if (SendMsg->pCurrRelay->Port != 0)
330 IO->dport = SendMsg->pCurrRelay->Port;
332 memset(&IO->Addr, 0, sizeof(struct in6_addr));
334 memcpy(&IO->Addr.sin6_addr.s6_addr,
335 &SendMsg->pCurrRelay->Addr,
336 sizeof(struct in6_addr));
338 IO->Addr.sin6_family = AF_INET6;
339 IO->Addr.sin6_port = htons(IO->dport);
342 struct sockaddr_in *addr = (struct sockaddr_in*) &IO->Addr;
343 /* Bypass the ns lookup result like this: IO->Addr.sin_addr.s_addr = inet_addr("127.0.0.1"); */
344 memcpy(&addr->sin_addr,///.s_addr,
345 &SendMsg->pCurrRelay->Addr,
346 sizeof(struct in_addr));
348 addr->sin_family = AF_INET;
349 addr->sin_port = htons(IO->dport);
352 SetConnectStatus(IO);
354 return InitEventIO(IO, SendMsg,
356 SMTP_C_ReadTimeouts[0],
360 void get_one_mx_host_ip_done(void *Ctx,
363 struct hostent *hostent)
365 AsyncIO *IO = (AsyncIO *) Ctx;
366 SmtpOutMsg *SendMsg = IO->Data;
367 eNextState State = eAbort;
369 if ((status == ARES_SUCCESS) && (hostent != NULL) ) {
371 IO->IP6 = hostent->h_addrtype == AF_INET6;
374 memset(&IO->Addr, 0, sizeof(struct in6_addr));
376 memcpy(&IO->Addr.sin6_addr.s6_addr,
377 &hostent->h_addr_list[0],
378 sizeof(struct in6_addr));
380 IO->Addr.sin6_family = hostent->h_addrtype;
381 IO->Addr.sin6_port = htons(IO->dport);
384 struct sockaddr_in *addr = (struct sockaddr_in*) &IO->Addr;
385 /* Bypass the ns lookup result like this: IO->Addr.sin_addr.s_addr = inet_addr("127.0.0.1"); */
386 // addr->sin_addr.s_addr = htonl((uint32_t)&hostent->h_addr_list[0]);
387 memcpy(&addr->sin_addr.s_addr, hostent->h_addr_list[0], sizeof(uint32_t));
389 addr->sin_family = hostent->h_addrtype;
390 addr->sin_port = htons(IO->dport);
393 SendMsg->IO.HEnt = hostent;
394 SetConnectStatus(IO);
395 State = InitEventIO(IO, SendMsg,
397 SMTP_C_ReadTimeouts[0],
401 SMTP_C_Terminate(IO);
404 const unsigned short DefaultMXPort = 25;
405 eNextState get_one_mx_host_ip(AsyncIO *IO)
407 SmtpOutMsg * SendMsg = IO->Data;
408 const char *Hostname;
413 if (SendMsg->CurrMX) {
414 SendMsg->mx_host = SendMsg->CurrMX->host;
415 SendMsg->CurrMX = SendMsg->CurrMX->next;
418 if (SendMsg->pCurrRelay != NULL) Hostname = SendMsg->pCurrRelay->Host;
419 else if (SendMsg->mx_host != NULL) Hostname = SendMsg->mx_host;
420 else Hostname = SendMsg->node;
422 CtdlLogPrintf(CTDL_DEBUG, "SMTP: %s\n", __FUNCTION__);
424 CtdlLogPrintf(CTDL_DEBUG,
425 "SMTP client[%ld]: looking up %s : %d ...\n",
430 ares_gethostbyname(SendMsg->IO.DNSChannel,
432 AF_INET6, /* it falls back to ipv4 in doubt... */
433 get_one_mx_host_ip_done,
435 return IO->NextState;
439 eNextState smtp_resolve_mx_done(AsyncIO *IO)
441 SmtpOutMsg * SendMsg = IO->Data;
443 CtdlLogPrintf(CTDL_DEBUG, "SMTP: %s\n", __FUNCTION__);
445 SendMsg->IO.SendBuf.Buf = NewStrBufPlain(NULL, 1024);
446 SendMsg->IO.RecvBuf.Buf = NewStrBufPlain(NULL, 1024);
447 SendMsg->IO.IOBuf = NewStrBuf();
448 SendMsg->IO.ErrMsg = SendMsg->MyQEntry->StatusMessage;
450 SendMsg->CurrMX = SendMsg->AllMX = IO->VParsedDNSReply;
451 //// TODO: should we remove the current ares context???
452 get_one_mx_host_ip(IO);
453 return IO->NextState;
457 eNextState resolve_mx_records(AsyncIO *IO)
459 SmtpOutMsg * SendMsg = IO->Data;
461 CtdlLogPrintf(CTDL_DEBUG, "SMTP: %s\n", __FUNCTION__);
463 if (!QueueQuery(ns_t_mx,
466 smtp_resolve_mx_done))
468 SendMsg->MyQEntry->Status = 5;
469 StrBufPrintf(SendMsg->MyQEntry->StatusMessage,
470 "No MX hosts found for <%s>", SendMsg->node);
471 return IO->NextState;
477 int smtp_resolve_recipients(SmtpOutMsg *SendMsg)
485 CtdlLogPrintf(CTDL_DEBUG, "SMTP: %s\n", __FUNCTION__);
487 if ((SendMsg==NULL) ||
488 (SendMsg->MyQEntry == NULL) ||
489 (StrLength(SendMsg->MyQEntry->Recipient) == 0)) {
493 /* Parse out the host portion of the recipient address */
494 process_rfc822_addr(ChrPtr(SendMsg->MyQEntry->Recipient),
499 CtdlLogPrintf(CTDL_DEBUG, "SMTP client[%ld]: Attempting delivery to <%s> @ <%s> (%s)\n",
500 SendMsg->n, SendMsg->user, SendMsg->node, SendMsg->name);
501 /* If no envelope_from is supplied, extract one from the message */
502 if ( (SendMsg->envelope_from == NULL) ||
503 (IsEmptyStr(SendMsg->envelope_from)) ) {
504 SendMsg->mailfrom[0] = '\0';
506 ptr = ChrPtr(SendMsg->msgtext);
508 if (ptr = cmemreadline(ptr, buf, sizeof buf), *ptr == 0) {
511 if (!strncasecmp(buf, "From:", 5)) {
512 safestrncpy(SendMsg->mailfrom, &buf[5], sizeof SendMsg->mailfrom);
513 striplt(SendMsg->mailfrom);
514 for (i=0; SendMsg->mailfrom[i]; ++i) {
515 if (!isprint(SendMsg->mailfrom[i])) {
516 strcpy(&SendMsg->mailfrom[i], &SendMsg->mailfrom[i+1]);
521 /* Strip out parenthesized names */
524 for (i=0; !IsEmptyStr(SendMsg->mailfrom + i); ++i) {
525 if (SendMsg->mailfrom[i] == '(') lp = i;
526 if (SendMsg->mailfrom[i] == ')') rp = i;
528 if ((lp>0)&&(rp>lp)) {
529 strcpy(&SendMsg->mailfrom[lp-1], &SendMsg->mailfrom[rp+1]);
532 /* Prefer brokketized names */
535 for (i=0; !IsEmptyStr(SendMsg->mailfrom + i); ++i) {
536 if (SendMsg->mailfrom[i] == '<') lp = i;
537 if (SendMsg->mailfrom[i] == '>') rp = i;
539 if ( (lp>=0) && (rp>lp) ) {
540 SendMsg->mailfrom[rp] = 0;
541 memmove(SendMsg->mailfrom,
542 &SendMsg->mailfrom[lp + 1],
548 } while (scan_done == 0);
549 if (IsEmptyStr(SendMsg->mailfrom)) strcpy(SendMsg->mailfrom, "someone@somewhere.org");
550 stripallbut(SendMsg->mailfrom, '<', '>');
551 SendMsg->envelope_from = SendMsg->mailfrom;
559 void smtp_try(OneQueItem *MyQItem,
560 MailQEntry *MyQEntry,
562 int KeepMsgText, /* KeepMsgText allows us to use MsgText as ours. */
565 SmtpOutMsg * SendMsg;
567 CtdlLogPrintf(CTDL_DEBUG, "SMTP: %s\n", __FUNCTION__);
569 SendMsg = (SmtpOutMsg *) malloc(sizeof(SmtpOutMsg));
570 memset(SendMsg, 0, sizeof(SmtpOutMsg));
571 SendMsg->IO.sock = (-1);
572 SendMsg->IO.NextState = eReadMessage;
573 SendMsg->n = MsgCount++;
574 SendMsg->MyQEntry = MyQEntry;
575 SendMsg->MyQItem = MyQItem;
576 SendMsg->pCurrRelay = MyQItem->URL;
578 SendMsg->IO.dport = DefaultMXPort;
579 SendMsg->IO.Data = SendMsg;
580 SendMsg->IO.SendDone = SMTP_C_DispatchWriteDone;
581 SendMsg->IO.ReadDone = SMTP_C_DispatchReadDone;
582 SendMsg->IO.Terminate = SMTP_C_Terminate;
583 SendMsg->IO.LineReader = SMTP_C_ReadServerStatus;
584 SendMsg->IO.ConnFail = SMTP_C_ConnFail;
585 SendMsg->IO.Timeout = SMTP_C_Timeout;
588 SendMsg->msgtext = MsgText;
591 SendMsg->msgtext = NewStrBufDup(MsgText);
594 if (smtp_resolve_recipients(SendMsg)) {
595 if (SendMsg->pCurrRelay == NULL)
596 QueueEventContext(&SendMsg->IO,
599 if (SendMsg->pCurrRelay->IsIP) {
600 QueueEventContext(&SendMsg->IO,
601 mx_connect_relay_ip);
604 QueueEventContext(&SendMsg->IO,
610 if ((SendMsg==NULL) ||
611 (SendMsg->MyQEntry == NULL)) {
612 SendMsg->MyQEntry->Status = 5;
613 StrBufPlain(SendMsg->MyQEntry->StatusMessage,
614 HKEY("Invalid Recipient!"));
616 FinalizeMessageSend(SendMsg);
624 /*****************************************************************************/
625 /* SMTP CLIENT STATE CALLBACKS */
626 /*****************************************************************************/
627 eNextState SMTPC_read_greeting(SmtpOutMsg *SendMsg)
629 /* Process the SMTP greeting from the server */
632 if (!SMTP_IS_STATE('2')) {
633 if (SMTP_IS_STATE('4'))
641 eNextState SMTPC_send_EHLO(SmtpOutMsg *SendMsg)
643 /* At this point we know we are talking to a real SMTP server */
645 /* Do a EHLO command. If it fails, try the HELO command. */
646 StrBufPrintf(SendMsg->IO.SendBuf.Buf,
647 "EHLO %s\r\n", config.c_fqdn);
653 eNextState SMTPC_read_EHLO_reply(SmtpOutMsg *SendMsg)
657 if (SMTP_IS_STATE('2')) {
660 if ((SendMsg->pCurrRelay == NULL) ||
661 (SendMsg->pCurrRelay->User == NULL))
662 SendMsg->State ++; /* Skip auth... */
664 /* else we fall back to 'helo' */
668 eNextState STMPC_send_HELO(SmtpOutMsg *SendMsg)
670 StrBufPrintf(SendMsg->IO.SendBuf.Buf,
671 "HELO %s\r\n", config.c_fqdn);
677 eNextState SMTPC_read_HELO_reply(SmtpOutMsg *SendMsg)
681 if (!SMTP_IS_STATE('2')) {
682 if (SMTP_IS_STATE('4'))
687 if ((SendMsg->pCurrRelay == NULL) ||
688 (SendMsg->pCurrRelay->User == NULL))
689 SendMsg->State ++; /* Skip auth... */
693 eNextState SMTPC_send_auth(SmtpOutMsg *SendMsg)
698 if ((SendMsg->pCurrRelay == NULL) ||
699 (SendMsg->pCurrRelay->User == NULL))
700 SendMsg->State ++; /* Skip auth, shouldn't even come here!... */
702 /* Do an AUTH command if necessary */
703 sprintf(buf, "%s%c%s%c%s",
704 SendMsg->pCurrRelay->User, '\0',
705 SendMsg->pCurrRelay->User, '\0',
706 SendMsg->pCurrRelay->Pass);
707 CtdlEncodeBase64(encoded, buf,
708 strlen(SendMsg->pCurrRelay->User) * 2 +
709 strlen(SendMsg->pCurrRelay->Pass) + 2, 0);
710 StrBufPrintf(SendMsg->IO.SendBuf.Buf,
711 "AUTH PLAIN %s\r\n", encoded);
717 eNextState SMTPC_read_auth_reply(SmtpOutMsg *SendMsg)
719 /* Do an AUTH command if necessary */
723 if (!SMTP_IS_STATE('2')) {
724 if (SMTP_IS_STATE('4'))
732 eNextState SMTPC_send_FROM(SmtpOutMsg *SendMsg)
734 /* previous command succeeded, now try the MAIL FROM: command */
735 StrBufPrintf(SendMsg->IO.SendBuf.Buf,
736 "MAIL FROM:<%s>\r\n",
737 SendMsg->envelope_from);
743 eNextState SMTPC_read_FROM_reply(SmtpOutMsg *SendMsg)
747 if (!SMTP_IS_STATE('2')) {
748 if (SMTP_IS_STATE('4'))
757 eNextState SMTPC_send_RCPT(SmtpOutMsg *SendMsg)
759 /* MAIL succeeded, now try the RCPT To: command */
760 StrBufPrintf(SendMsg->IO.SendBuf.Buf,
761 "RCPT TO:<%s@%s>\r\n",
769 eNextState SMTPC_read_RCPT_reply(SmtpOutMsg *SendMsg)
773 if (!SMTP_IS_STATE('2')) {
774 if (SMTP_IS_STATE('4'))
782 eNextState SMTPC_send_DATAcmd(SmtpOutMsg *SendMsg)
784 /* RCPT succeeded, now try the DATA command */
785 StrBufPlain(SendMsg->IO.SendBuf.Buf,
792 eNextState SMTPC_read_DATAcmd_reply(SmtpOutMsg *SendMsg)
796 if (!SMTP_IS_STATE('3')) {
797 if (SMTP_IS_STATE('4'))
805 eNextState SMTPC_send_data_body(SmtpOutMsg *SendMsg)
808 /* If we reach this point, the server is expecting data.*/
810 Buf = SendMsg->IO.SendBuf.Buf;
811 SendMsg->IO.SendBuf.Buf = SendMsg->msgtext;
812 SendMsg->msgtext = Buf;
818 eNextState SMTPC_send_terminate_data_body(SmtpOutMsg *SendMsg)
822 Buf = SendMsg->IO.SendBuf.Buf;
823 SendMsg->IO.SendBuf.Buf = SendMsg->msgtext;
824 SendMsg->msgtext = Buf;
826 StrBufPlain(SendMsg->IO.SendBuf.Buf,
833 eNextState SMTPC_read_data_body_reply(SmtpOutMsg *SendMsg)
837 if (!SMTP_IS_STATE('2')) {
838 if (SMTP_IS_STATE('4'))
845 StrBufPlain(SendMsg->MyQEntry->StatusMessage,
846 &ChrPtr(SendMsg->IO.RecvBuf.Buf)[4],
847 StrLength(SendMsg->IO.RecvBuf.Buf) - 4);
848 SendMsg->MyQEntry->Status = 2;
852 eNextState SMTPC_send_QUIT(SmtpOutMsg *SendMsg)
854 StrBufPlain(SendMsg->IO.SendBuf.Buf,
861 eNextState SMTPC_read_QUIT_reply(SmtpOutMsg *SendMsg)
865 CtdlLogPrintf(CTDL_INFO, "SMTP client[%ld]: delivery to <%s> @ <%s> (%s) succeeded\n",
866 SendMsg->n, SendMsg->user, SendMsg->node, SendMsg->name);
867 return eTerminateConnection;
870 eNextState SMTPC_read_dummy(SmtpOutMsg *SendMsg)
875 eNextState SMTPC_send_dummy(SmtpOutMsg *SendMsg)
881 /*****************************************************************************/
882 /* SMTP CLIENT DISPATCHER */
883 /*****************************************************************************/
884 SMTPReadHandler ReadHandlers[eMaxSMTPC] = {
886 SMTPC_read_EHLO_reply,
887 SMTPC_read_HELO_reply,
888 SMTPC_read_auth_reply,
889 SMTPC_read_FROM_reply,
890 SMTPC_read_RCPT_reply,
891 SMTPC_read_DATAcmd_reply,
893 SMTPC_read_data_body_reply,
894 SMTPC_read_QUIT_reply
896 SMTPSendHandler SendHandlers[eMaxSMTPC] = {
897 SMTPC_send_dummy, /* we don't send a greeting, the server does... */
904 SMTPC_send_data_body,
905 SMTPC_send_terminate_data_body,
909 void SMTPSetTimeout(eNextState NextTCPState, SmtpOutMsg *pMsg)
911 CtdlLogPrintf(CTDL_DEBUG, "SMTP: %s\n", __FUNCTION__);
913 switch (NextTCPState) {
916 Timeout = SMTP_C_SendTimeouts[pMsg->State];
917 if (pMsg->State == eDATABody) {
918 /* if we're sending a huge message, we need more time. */
919 Timeout += StrLength(pMsg->msgtext) / 1024;
923 Timeout = SMTP_C_ReadTimeouts[pMsg->State];
924 if (pMsg->State == eDATATerminateBody) {
926 * some mailservers take a nap before accepting the message
927 * content inspection and such.
929 Timeout += StrLength(pMsg->msgtext) / 1024;
932 case eTerminateConnection:
936 SetNextTimeout(&pMsg->IO, Timeout);
938 eNextState SMTP_C_DispatchReadDone(AsyncIO *IO)
940 CtdlLogPrintf(CTDL_DEBUG, "SMTP: %s\n", __FUNCTION__);
941 SmtpOutMsg *pMsg = IO->Data;
944 rc = ReadHandlers[pMsg->State](pMsg);
946 SMTPSetTimeout(rc, pMsg);
949 eNextState SMTP_C_DispatchWriteDone(AsyncIO *IO)
951 CtdlLogPrintf(CTDL_DEBUG, "SMTP: %s\n", __FUNCTION__);
952 SmtpOutMsg *pMsg = IO->Data;
955 rc = SendHandlers[pMsg->State](pMsg);
956 SMTPSetTimeout(rc, pMsg);
961 /*****************************************************************************/
962 /* SMTP CLIENT ERROR CATCHERS */
963 /*****************************************************************************/
964 eNextState SMTP_C_Terminate(AsyncIO *IO)
966 CtdlLogPrintf(CTDL_DEBUG, "SMTP: %s\n", __FUNCTION__);
967 SmtpOutMsg *pMsg = IO->Data;
968 FinalizeMessageSend(pMsg);
971 eNextState SMTP_C_Timeout(AsyncIO *IO)
973 CtdlLogPrintf(CTDL_DEBUG, "SMTP: %s\n", __FUNCTION__);
974 SmtpOutMsg *pMsg = IO->Data;
975 StrBufPlain(IO->ErrMsg, CKEY(ReadErrors[pMsg->State]));
976 FinalizeMessageSend(pMsg);
979 eNextState SMTP_C_ConnFail(AsyncIO *IO)
981 CtdlLogPrintf(CTDL_DEBUG, "SMTP: %s\n", __FUNCTION__);
982 SmtpOutMsg *pMsg = IO->Data;
983 FinalizeMessageSend(pMsg);
989 * @brief lineread Handler; understands when to read more SMTP lines, and when this is a one-lined reply.
991 eReadState SMTP_C_ReadServerStatus(AsyncIO *IO)
993 eReadState Finished = eBufferNotEmpty;
995 while (Finished == eBufferNotEmpty) {
996 Finished = StrBufChunkSipLine(IO->IOBuf, &IO->RecvBuf);
999 case eMustReadMore: /// read new from socket...
1002 case eBufferNotEmpty: /* shouldn't happen... */
1003 case eReadSuccess: /// done for now...
1004 if (StrLength(IO->IOBuf) < 4)
1006 if (ChrPtr(IO->IOBuf)[3] == '-')
1007 Finished = eBufferNotEmpty;
1011 case eReadFail: /// WHUT?
1020 CTDL_MODULE_INIT(smtp_eventclient)
1022 return "smtpeventclient";