+++ /dev/null
-/*
- * This module is an SMTP and ESMTP implementation for the Citadel system.
- * It is compliant with all of the following:
- *
- * RFC 821 - Simple Mail Transfer Protocol
- * RFC 876 - Survey of SMTP Implementations
- * RFC 1047 - Duplicate messages and SMTP
- * RFC 1652 - 8 bit MIME
- * RFC 1869 - Extended Simple Mail Transfer Protocol
- * RFC 1870 - SMTP Service Extension for Message Size Declaration
- * RFC 2033 - Local Mail Transfer Protocol
- * RFC 2197 - SMTP Service Extension for Command Pipelining
- * RFC 2476 - Message Submission
- * RFC 2487 - SMTP Service Extension for Secure SMTP over TLS
- * RFC 2554 - SMTP Service Extension for Authentication
- * RFC 2821 - Simple Mail Transfer Protocol
- * RFC 2822 - Internet Message Format
- * RFC 2920 - SMTP Service Extension for Command Pipelining
- *
- * The VRFY and EXPN commands have been removed from this implementation
- * because nobody uses these commands anymore, except for spammers.
- *
- * Copyright (c) 1998-2012 by the citadel.org team
- *
- * This program is open source software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 3.
- *
- *
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- *
- *
- *
- */
-
-#include "sysdep.h"
-#include <stdlib.h>
-#include <unistd.h>
-#include <stdio.h>
-#include <termios.h>
-#include <fcntl.h>
-#include <signal.h>
-#include <pwd.h>
-#include <errno.h>
-#include <sys/types.h>
-#include <syslog.h>
-
-#if TIME_WITH_SYS_TIME
-# include <sys/time.h>
-# include <time.h>
-#else
-# if HAVE_SYS_TIME_H
-# include <sys/time.h>
-# else
-# include <time.h>
-# endif
-#endif
-#include <sys/wait.h>
-#include <ctype.h>
-#include <string.h>
-#include <limits.h>
-#include <sys/socket.h>
-#include <netinet/in.h>
-#include <arpa/inet.h>
-#include <libcitadel.h>
-#include "citadel.h"
-#include "server.h"
-#include "citserver.h"
-#include "support.h"
-#include "config.h"
-#include "control.h"
-#include "user_ops.h"
-#include "database.h"
-#include "msgbase.h"
-#include "internet_addressing.h"
-#include "genstamp.h"
-#include "domain.h"
-#include "clientsocket.h"
-#include "locate_host.h"
-#include "citadel_dirs.h"
-
-#include "ctdl_module.h"
-
-#include "smtp_util.h"
-#include "event_client.h"
-#include "smtpqueue.h"
-#include "smtp_clienthandlers.h"
-
-ConstStr SMTPStates[] = {
- {HKEY("looking up mx - record")},
- {HKEY("evaluating what to do next")},
- {HKEY("looking up a - record")},
- {HKEY("looking up aaaa - record")},
- {HKEY("connecting remote")},
- {HKEY("smtp conversation ongoing")},
- {HKEY("smtp sending maildata")},
- {HKEY("smtp sending done")},
- {HKEY("smtp successfully finished")},
- {HKEY("failed one attempt")},
- {HKEY("failed temporarily")},
- {HKEY("failed permanently")}
-};
-
-void SetSMTPState(AsyncIO *IO, smtpstate State)
-{
- CitContext* CCC = IO->CitContext;
- if (CCC != NULL)
- memcpy(CCC->cs_clientname, SMTPStates[State].Key, SMTPStates[State].len + 1);
-}
-
-void DeleteSmtpOutMsg(void *v)
-{
- SmtpOutMsg *Msg = v;
- syslog(LOG_DEBUG, "%s Exit\n", __FUNCTION__);
-
- /* these are kept in our own space and free'd below */
- Msg->IO.ConnectMe = NULL;
-
- ares_free_data(Msg->AllMX);
- if (Msg->HostLookup.VParsedDNSReply != NULL)
- Msg->HostLookup.DNSReplyFree(Msg->HostLookup.VParsedDNSReply);
- FreeURL(&Msg->Relay);
- FreeStrBuf(&Msg->msgtext);
- FreeStrBuf(&Msg->MultiLineBuf);
- FreeAsyncIOContents(&Msg->IO);
- memset (Msg, 0, sizeof(SmtpOutMsg)); /* just to be shure... */
- free(Msg);
-}
-
-eNextState SMTP_C_Shutdown(AsyncIO *IO);
-eNextState SMTP_C_Timeout(AsyncIO *IO);
-eNextState SMTP_C_ConnFail(AsyncIO *IO);
-eNextState SMTP_C_DispatchReadDone(AsyncIO *IO);
-eNextState SMTP_C_DispatchWriteDone(AsyncIO *IO);
-eNextState SMTP_C_DNSFail(AsyncIO *IO);
-eNextState SMTP_C_Terminate(AsyncIO *IO);
-eNextState SMTP_C_TerminateDB(AsyncIO *IO);
-eReadState SMTP_C_ReadServerStatus(AsyncIO *IO);
-
-eNextState mx_connect_ip(AsyncIO *IO);
-eNextState get_one_mx_host_ip(AsyncIO *IO);
-
-/******************************************************************************
- * So, we're finished with sending (regardless of success or failure) *
- * This Message might be referenced by several Queue-Items, if we're the last,*
- * we need to free the memory and send bounce messages (on terminal failure) *
- * else we just free our SMTP-Message struct. *
- ******************************************************************************/
-eNextState FinalizeMessageSend_DB(AsyncIO *IO)
-{
- const char *Status;
- SmtpOutMsg *Msg = IO->Data;
- StrBuf *StatusMessage;
-
- if (Msg->MyQEntry->AllStatusMessages != NULL)
- StatusMessage = Msg->MyQEntry->AllStatusMessages;
- else
- StatusMessage = Msg->MyQEntry->StatusMessage;
-
-
- if (Msg->MyQEntry->Status == 2) {
- SetSMTPState(IO, eSTMPfinished);
- Status = "Delivery successful.";
- }
- else if (Msg->MyQEntry->Status == 5) {
- SetSMTPState(IO, eSMTPFailTotal);
- Status = "Delivery failed permanently; giving up.";
- }
- else {
- SetSMTPState(IO, eSMTPFailTemporary);
- Status = "Delivery failed temporarily; will retry later.";
- }
-
- syslog(LOG_INFO,
- "%s Time[%fs] Recipient <%s> @ <%s> (%s) Status message: %s\n",
- Status,
- Msg->IO.Now - Msg->IO.StartIO,
- Msg->user,
- Msg->node,
- Msg->name,
- ChrPtr(StatusMessage));
-
-
- Msg->IDestructQueItem = DecreaseQReference(Msg->MyQItem);
-
- Msg->nRemain = CountActiveQueueEntries(Msg->MyQItem, 0);
-
- if (Msg->MyQEntry->Active &&
- !Msg->MyQEntry->StillActive &&
- CheckQEntryIsBounce(Msg->MyQEntry))
- {
- /* are we casue for a bounce mail? */
- Msg->MyQItem->SendBounceMail |= (1<<Msg->MyQEntry->Status);
- }
-
- if ((Msg->nRemain > 0) || Msg->IDestructQueItem)
- Msg->QMsgData = SerializeQueueItem(Msg->MyQItem);
- else
- Msg->QMsgData = NULL;
-
- /*
- * Uncompleted delivery instructions remain, so delete the old
- * instructions and replace with the updated ones.
- */
- syslog(LOG_DEBUG, "%ld", Msg->MyQItem->QueMsgID);
- CtdlDeleteMessages(SMTP_SPOOLOUT_ROOM, &Msg->MyQItem->QueMsgID, 1, "");
- Msg->MyQItem->QueMsgID = -1;
-
- if (Msg->IDestructQueItem)
- smtpq_do_bounce(Msg->MyQItem, Msg->msgtext, Msg->pCurrRelay);
-
- if (Msg->nRemain > 0)
- {
- struct CtdlMessage *msg;
- msg = malloc(sizeof(struct CtdlMessage));
- memset(msg, 0, sizeof(struct CtdlMessage));
- msg->cm_magic = CTDLMESSAGE_MAGIC;
- msg->cm_anon_type = MES_NORMAL;
- msg->cm_format_type = FMT_RFC822;
- CM_SetAsFieldSB(msg, eMesageText, &Msg->QMsgData);
- CM_SetField(msg, eMsgSubject, HKEY("QMSG"));
- Msg->MyQItem->QueMsgID =
- CtdlSubmitMsg(msg, NULL, SMTP_SPOOLOUT_ROOM, QP_EADDR);
- syslog(LOG_DEBUG, "%ld", Msg->MyQItem->QueMsgID);
- CM_Free(msg);
- }
- else {
- CtdlDeleteMessages(SMTP_SPOOLOUT_ROOM,
- &Msg->MyQItem->MessageID,
- 1,
- "");
- FreeStrBuf(&Msg->QMsgData);
- }
-
- RemoveContext(Msg->IO.CitContext);
- return eAbort;
-}
-
-eNextState Terminate(AsyncIO *IO)
-{
- SmtpOutMsg *Msg = IO->Data;
-
- if (Msg->IDestructQueItem)
- RemoveQItem(Msg->MyQItem);
-
- DeleteSmtpOutMsg(Msg);
- return eAbort;
-}
-eNextState FinalizeMessageSend(SmtpOutMsg *Msg)
-{
- /* hand over to DB Queue */
- return EventQueueDBOperation(&Msg->IO, FinalizeMessageSend_DB, 0);
-}
-
-eNextState FailOneAttempt(AsyncIO *IO)
-{
- SmtpOutMsg *Msg = IO->Data;
-
- SetSMTPState(IO, eSTMPfailOne);
- if (Msg->MyQEntry->Status == 2)
- return eAbort;
-
- /*
- * possible ways here:
- * - connection timeout
- * - dns lookup failed
- */
- StopClientWatchers(IO, 1);
-
- Msg->MyQEntry->nAttempt ++;
- if (Msg->MyQEntry->AllStatusMessages == NULL)
- Msg->MyQEntry->AllStatusMessages = NewStrBuf();
-
- StrBufAppendPrintf(Msg->MyQEntry->AllStatusMessages, "%ld) ", Msg->MyQEntry->nAttempt);
- StrBufAppendBuf(Msg->MyQEntry->AllStatusMessages, Msg->MyQEntry->StatusMessage, 0);
- StrBufAppendBufPlain(Msg->MyQEntry->AllStatusMessages, HKEY("; "), 0);
-
- if (Msg->pCurrRelay != NULL)
- Msg->pCurrRelay = Msg->pCurrRelay->Next;
- if ((Msg->pCurrRelay != NULL) &&
- !Msg->pCurrRelay->IsRelay &&
- Msg->MyQItem->HaveRelay)
- {
- syslog(LOG_DEBUG, "%s Aborting; last relay failed.\n", __FUNCTION__);
- return FinalizeMessageSend(Msg);
- }
-
- if (Msg->pCurrRelay == NULL) {
- syslog(LOG_DEBUG, "%s Aborting\n", __FUNCTION__);
- return FinalizeMessageSend(Msg);
- }
- if (Msg->pCurrRelay->IsIP) {
- syslog(LOG_DEBUG, "%s connecting IP\n", __FUNCTION__);
- return mx_connect_ip(IO);
- }
- else {
- syslog(LOG_DEBUG,
- "%s resolving next MX Record\n",
- __FUNCTION__);
- return get_one_mx_host_ip(IO);
- }
-}
-
-
-void SetConnectStatus(AsyncIO *IO)
-{
- SmtpOutMsg *Msg = IO->Data;
- char buf[256];
- void *src;
-
- buf[0] = '\0';
-
- if (IO->ConnectMe->IPv6) {
- src = &IO->ConnectMe->Addr.sin6_addr;
- }
- else {
- struct sockaddr_in *addr;
-
- addr = (struct sockaddr_in *)&IO->ConnectMe->Addr;
- src = &addr->sin_addr.s_addr;
- }
-
- inet_ntop((IO->ConnectMe->IPv6)?AF_INET6:AF_INET,
- src,
- buf,
- sizeof(buf));
-
- if (Msg->mx_host == NULL)
- Msg->mx_host = "<no MX-Record>";
-
- syslog(LOG_INFO,
- "connecting to %s [%s]:%d ...\n",
- Msg->mx_host,
- buf,
- Msg->IO.ConnectMe->Port);
-
- Msg->MyQEntry->Status = 4;
- StrBufPrintf(Msg->MyQEntry->StatusMessage,
- "Timeout while connecting %s [%s]:%d ",
- Msg->mx_host,
- buf,
- Msg->IO.ConnectMe->Port);
- Msg->IO.NextState = eConnect;
-}
-
-/*****************************************************************************
- * So we connect our Relay IP here. *
- *****************************************************************************/
-eNextState mx_connect_ip(AsyncIO *IO)
-{
- SmtpOutMsg *Msg = IO->Data;
- SetSMTPState(IO, eSTMPconnecting);
-
- syslog(LOG_DEBUG, "%s(%s)\n", __FUNCTION__, (Msg->IsRelay)? "Relay":"Remote");
-
- IO->ConnectMe = Msg->pCurrRelay;
- Msg->State = eConnectMX;
-
- SetConnectStatus(IO);
-
- return EvConnectSock(IO,
- SMTP_C_ConnTimeout,
- SMTP_C_ReadTimeouts[0],
- 1);
-}
-
-eNextState get_one_mx_host_ip_done(AsyncIO *IO)
-{
- SmtpOutMsg *Msg = IO->Data;
- struct hostent *hostent;
-
- IO->ConnectMe = Msg->pCurrRelay;
-
- QueryCbDone(IO);
- syslog(LOG_DEBUG, "%s Time[%fs]\n",
- __FUNCTION__,
- IO->Now - IO->DNS.Start);
-
- hostent = Msg->HostLookup.VParsedDNSReply;
- if ((Msg->HostLookup.DNSStatus == ARES_SUCCESS) &&
- (hostent != NULL) ) {
- memset(&Msg->pCurrRelay->Addr, 0, sizeof(struct in6_addr));
- if (Msg->pCurrRelay->IPv6) {
- memcpy(&Msg->pCurrRelay->Addr.sin6_addr.s6_addr,
- &hostent->h_addr_list[0],
- sizeof(struct in6_addr));
-
- Msg->pCurrRelay->Addr.sin6_family =
- hostent->h_addrtype;
- Msg->pCurrRelay->Addr.sin6_port =
- htons(Msg->IO.ConnectMe->Port);
- }
- else {
- struct sockaddr_in *addr;
- /*
- * Bypass the ns lookup result like this:
- * IO->Addr.sin_addr.s_addr = inet_addr("127.0.0.1");
- * addr->sin_addr.s_addr =
- * htonl((uint32_t)&hostent->h_addr_list[0]);
- */
-
- addr = (struct sockaddr_in*) &Msg->pCurrRelay->Addr;
-
- memcpy(&addr->sin_addr.s_addr,
- hostent->h_addr_list[0],
- sizeof(uint32_t));
-
- addr->sin_family = hostent->h_addrtype;
- addr->sin_port = htons(Msg->IO.ConnectMe->Port);
- }
- Msg->mx_host = Msg->pCurrRelay->Host;
- if (Msg->HostLookup.VParsedDNSReply != NULL) {
- Msg->HostLookup.DNSReplyFree(Msg->HostLookup.VParsedDNSReply);
- Msg->HostLookup.VParsedDNSReply = NULL;
- }
- return mx_connect_ip(IO);
- }
- else {
- SetSMTPState(IO, eSTMPfailOne);
- if (Msg->HostLookup.VParsedDNSReply != NULL) {
- Msg->HostLookup.DNSReplyFree(Msg->HostLookup.VParsedDNSReply);
- Msg->HostLookup.VParsedDNSReply = NULL;
- }
- return FailOneAttempt(IO);
- }
-}
-
-eNextState get_one_mx_host_ip(AsyncIO *IO)
-{
- SmtpOutMsg * Msg = IO->Data;
- /*
- * here we start with the lookup of one host. it might be...
- * - the relay host *sigh*
- * - the direct hostname if there was no mx record
- * - one of the mx'es
- */
- SetSMTPState(IO, (Msg->pCurrRelay->IPv6)?eSTMPalookup:eSTMPaaaalookup);
-
- syslog(LOG_DEBUG, "%s\n", __FUNCTION__);
-
- syslog(LOG_DEBUG,
- "looking up %s-Record %s : %d ...\n",
- (Msg->pCurrRelay->IPv6)? "aaaa": "a",
- Msg->pCurrRelay->Host,
- Msg->pCurrRelay->Port);
-
- if (!QueueQuery((Msg->pCurrRelay->IPv6)? ns_t_aaaa : ns_t_a,
- Msg->pCurrRelay->Host,
- &Msg->IO,
- &Msg->HostLookup,
- get_one_mx_host_ip_done))
- {
- Msg->MyQEntry->Status = 5;
- StrBufPrintf(Msg->MyQEntry->StatusMessage,
- "No MX hosts found for <%s>", Msg->node);
- Msg->IO.NextState = eTerminateConnection;
- return IO->NextState;
- }
- IO->NextState = eReadDNSReply;
- return IO->NextState;
-}
-
-
-/*****************************************************************************
- * here we try to find out about the MX records for our recipients. *
- *****************************************************************************/
-eNextState smtp_resolve_mx_record_done(AsyncIO *IO)
-{
- SmtpOutMsg * Msg = IO->Data;
- ParsedURL **pp;
-
- QueryCbDone(IO);
-
- syslog(LOG_DEBUG, "%s Time[%fs]\n",
- __FUNCTION__,
- IO->Now - IO->DNS.Start);
-
- pp = &Msg->Relay;
- while ((pp != NULL) && (*pp != NULL) && ((*pp)->Next != NULL))
- pp = &(*pp)->Next;
-
- if ((IO->DNS.Query->DNSStatus == ARES_SUCCESS) &&
- (IO->DNS.Query->VParsedDNSReply != NULL))
- { /* ok, we found mx records. */
-
- Msg->CurrMX
- = Msg->AllMX
- = IO->DNS.Query->VParsedDNSReply;
- while (Msg->CurrMX) {
- int i;
- for (i = 0; i < 2; i++) {
- ParsedURL *p;
-
- p = (ParsedURL*) malloc(sizeof(ParsedURL));
- memset(p, 0, sizeof(ParsedURL));
- p->Priority = Msg->CurrMX->priority;
- p->IsIP = 0;
- p->Port = DefaultMXPort;
- p->IPv6 = i == 1;
- p->Host = Msg->CurrMX->host;
- if (*pp == NULL)
- *pp = p;
- else {
- ParsedURL *ppp = *pp;
-
- while ((ppp->Next != NULL) &&
- (ppp->Next->Priority <= p->Priority))
- ppp = ppp->Next;
- if ((ppp == *pp) &&
- (ppp->Priority > p->Priority)) {
- p->Next = *pp;
- *pp = p;
- }
- else {
- p->Next = ppp->Next;
- ppp->Next = p;
- }
- }
- }
- Msg->CurrMX = Msg->CurrMX->next;
- }
- Msg->CXFlags = Msg->CXFlags & F_HAVE_MX;
- }
- else { /* else fall back to the plain hostname */
- int i;
- for (i = 0; i < 2; i++) {
- ParsedURL *p;
-
- p = (ParsedURL*) malloc(sizeof(ParsedURL));
- memset(p, 0, sizeof(ParsedURL));
- p->IsIP = 0;
- p->Port = DefaultMXPort;
- p->IPv6 = i == 1;
- p->Host = Msg->node;
-
- *pp = p;
- pp = &p->Next;
- }
- Msg->CXFlags = Msg->CXFlags & F_DIRECT;
- }
- if (Msg->MyQItem->FallBackHost != NULL)
- {
- Msg->MyQItem->FallBackHost->Next = *pp;
- *pp = Msg->MyQItem->FallBackHost;
- }
- Msg->pCurrRelay = Msg->Relay;
- return get_one_mx_host_ip(IO);
-}
-
-eNextState resolve_mx_records(AsyncIO *IO)
-{
- SmtpOutMsg * Msg = IO->Data;
-
- SetSMTPState(IO, eSTMPmxlookup);
-
- syslog(LOG_DEBUG, "%s\n", __FUNCTION__);
- /* start resolving MX records here. */
- if (!QueueQuery(ns_t_mx,
- Msg->node,
- &Msg->IO,
- &Msg->MxLookup,
- smtp_resolve_mx_record_done))
- {
- Msg->MyQEntry->Status = 5;
- StrBufPrintf(Msg->MyQEntry->StatusMessage,
- "No MX hosts found for <%s>", Msg->node);
- return IO->NextState;
- }
- Msg->IO.NextState = eReadDNSReply;
- return IO->NextState;
-}
-
-
-
-/******************************************************************************
- * so, we're going to start a SMTP delivery. lets get it on. *
- ******************************************************************************/
-
-SmtpOutMsg *new_smtp_outmsg(OneQueItem *MyQItem,
- MailQEntry *MyQEntry,
- int MsgCount)
-{
- SmtpOutMsg * Msg;
-
- Msg = (SmtpOutMsg *) malloc(sizeof(SmtpOutMsg));
- if (Msg == NULL)
- return NULL;
- memset(Msg, 0, sizeof(SmtpOutMsg));
-
- Msg->n = MsgCount;
- Msg->MyQEntry = MyQEntry;
- Msg->MyQItem = MyQItem;
- Msg->pCurrRelay = MyQItem->URL;
-
- InitIOStruct(&Msg->IO,
- Msg,
- eReadMessage,
- SMTP_C_ReadServerStatus,
- SMTP_C_DNSFail,
- SMTP_C_DispatchWriteDone,
- SMTP_C_DispatchReadDone,
- SMTP_C_Terminate,
- SMTP_C_TerminateDB,
- SMTP_C_ConnFail,
- SMTP_C_Timeout,
- SMTP_C_Shutdown);
-
- Msg->IO.ErrMsg = Msg->MyQEntry->StatusMessage;
-
- return Msg;
-}
-
-void smtp_try_one_queue_entry(OneQueItem *MyQItem,
- MailQEntry *MyQEntry,
- StrBuf *MsgText,
- /*KeepMsgText allows us to use MsgText as ours.*/
- int KeepMsgText,
- int MsgCount)
-{
- SmtpOutMsg *Msg;
-
- syslog(LOG_DEBUG, "%s\n", __FUNCTION__);
-
- Msg = new_smtp_outmsg(MyQItem, MyQEntry, MsgCount);
- if (Msg == NULL) {
- syslog(LOG_DEBUG, "%s Failed to alocate message context.\n", __FUNCTION__);
- if (KeepMsgText)
- FreeStrBuf (&MsgText);
- return;
- }
- if (KeepMsgText) Msg->msgtext = MsgText;
- else Msg->msgtext = NewStrBufDup(MsgText);
-
- if (smtp_resolve_recipients(Msg) &&
- (!MyQItem->HaveRelay ||
- (MyQItem->URL != NULL)))
- {
- safestrncpy(
- ((CitContext *)Msg->IO.CitContext)->cs_host,
- Msg->node,
- sizeof(((CitContext *)
- Msg->IO.CitContext)->cs_host));
-
- syslog(LOG_DEBUG, "Starting: [%ld] <%s> CC <%d> \n",
- Msg->MyQItem->MessageID,
- ChrPtr(Msg->MyQEntry->Recipient),
- ((CitContext*)Msg->IO.CitContext)->cs_pid);
- if (Msg->pCurrRelay == NULL) {
- SetSMTPState(&Msg->IO, eSTMPmxlookup);
- QueueEventContext(&Msg->IO,
- resolve_mx_records);
- }
- else { /* oh... via relay host */
- Msg->IsRelay = 1;
- if (Msg->pCurrRelay->IsIP) {
- SetSMTPState(&Msg->IO, eSTMPconnecting);
- QueueEventContext(&Msg->IO,
- mx_connect_ip);
- }
- else {
- SetSMTPState(&Msg->IO, eSTMPalookup);
- /* uneducated admin has chosen to
- add DNS to the equation... */
- QueueEventContext(&Msg->IO,
- get_one_mx_host_ip);
- }
- }
- }
- else {
- SetSMTPState(&Msg->IO, eSMTPFailTotal);
- /* No recipients? well fail then. */
- if (Msg->MyQEntry != NULL) {
- Msg->MyQEntry->Status = 5;
- if (StrLength(Msg->MyQEntry->StatusMessage) == 0)
- StrBufPlain(Msg->MyQEntry->StatusMessage,
- HKEY("Invalid Recipient!"));
- }
- FinalizeMessageSend_DB(&Msg->IO);
- DeleteSmtpOutMsg(Msg);
- }
-}
-
-
-
-
-
-
-/*****************************************************************************/
-/* SMTP CLIENT DISPATCHER */
-/*****************************************************************************/
-
-void SMTPSetTimeout(eNextState NextTCPState, SmtpOutMsg *Msg)
-{
- double Timeout = 0.0;
-
- syslog(LOG_DEBUG, "%s\n", __FUNCTION__);
-
- switch (NextTCPState) {
- case eSendFile:
- case eSendReply:
- case eSendMore:
- Timeout = SMTP_C_SendTimeouts[Msg->State];
- if (Msg->State == eDATABody) {
- /* if we're sending a huge message,
- * we need more time.
- */
- Timeout += StrLength(Msg->msgtext) / 512;
- }
- break;
- case eReadMessage:
- Timeout = SMTP_C_ReadTimeouts[Msg->State];
- if (Msg->State == eDATATerminateBody) {
- /*
- * some mailservers take a nap before accepting
- * the message content inspection and such.
- */
- Timeout += StrLength(Msg->msgtext) / 512;
- }
- break;
- case eSendDNSQuery:
- case eReadDNSReply:
- case eDBQuery:
- case eReadFile:
- case eReadMore:
- case eReadPayload:
- case eConnect:
- case eTerminateConnection:
- case eAbort:
- return;
- }
- SetNextTimeout(&Msg->IO, Timeout);
-}
-eNextState SMTP_C_DispatchReadDone(AsyncIO *IO)
-{
- syslog(LOG_DEBUG, "%s\n", __FUNCTION__);
- SmtpOutMsg *Msg = IO->Data;
- eNextState rc;
-
- rc = ReadHandlers[Msg->State](Msg);
- if (rc != eAbort)
- {
- Msg->State++;
- SMTPSetTimeout(rc, Msg);
- }
- return rc;
-}
-eNextState SMTP_C_DispatchWriteDone(AsyncIO *IO)
-{
- syslog(LOG_DEBUG, "%s\n", __FUNCTION__);
- SmtpOutMsg *Msg = IO->Data;
- eNextState rc;
-
- rc = SendHandlers[Msg->State](Msg);
- SMTPSetTimeout(rc, Msg);
- return rc;
-}
-
-
-/*****************************************************************************/
-/* SMTP CLIENT ERROR CATCHERS */
-/*****************************************************************************/
-eNextState SMTP_C_Terminate(AsyncIO *IO)
-{
- SmtpOutMsg *Msg = IO->Data;
-
- syslog(LOG_DEBUG, "%s\n", __FUNCTION__);
- return FinalizeMessageSend(Msg);
-}
-eNextState SMTP_C_TerminateDB(AsyncIO *IO)
-{
- syslog(LOG_DEBUG, "%s\n", __FUNCTION__);
- return Terminate(IO);
-}
-eNextState SMTP_C_Timeout(AsyncIO *IO)
-{
- SmtpOutMsg *Msg = IO->Data;
-
- Msg->MyQEntry->Status = 4;
- syslog(LOG_DEBUG, "%s\n", __FUNCTION__);
- StrBufPrintf(IO->ErrMsg, "Timeout: %s while talking to %s",
- ReadErrors[Msg->State].Key,
- Msg->mx_host);
- if (Msg->State > eRCPT)
- return eAbort;
- else
- return FailOneAttempt(IO);
-}
-eNextState SMTP_C_ConnFail(AsyncIO *IO)
-{
- SmtpOutMsg *Msg = IO->Data;
-
- Msg->MyQEntry->Status = 4;
- syslog(LOG_DEBUG, "%s\n", __FUNCTION__);
- StrBufPrintf(IO->ErrMsg, "Connection failure: %s while talking to %s",
- ReadErrors[Msg->State].Key,
- Msg->mx_host);
-
- return FailOneAttempt(IO);
-}
-eNextState SMTP_C_DNSFail(AsyncIO *IO)
-{
- SmtpOutMsg *Msg = IO->Data;
- Msg->MyQEntry->Status = 4;
- syslog(LOG_DEBUG, "%s\n", __FUNCTION__);
- return FailOneAttempt(IO);
-}
-eNextState SMTP_C_Shutdown(AsyncIO *IO)
-{
- syslog(LOG_DEBUG, "%s\n", __FUNCTION__);
- SmtpOutMsg *Msg = IO->Data;
-
- switch (IO->NextState) {
- case eSendDNSQuery:
- case eReadDNSReply:
-
- /* todo: abort c-ares */
- case eConnect:
- case eSendReply:
- case eSendMore:
- case eSendFile:
- case eReadMessage:
- case eReadMore:
- case eReadPayload:
- case eReadFile:
- StopClientWatchers(IO, 1);
- break;
- case eDBQuery:
-
- break;
- case eTerminateConnection:
- case eAbort:
- break;
- }
- Msg->MyQEntry->Status = 3;
- StrBufPlain(Msg->MyQEntry->StatusMessage,
- HKEY("server shutdown during message submit."));
- return FinalizeMessageSend(Msg);
-}
-
-
-/**
- * @brief lineread Handler;
- * understands when to read more SMTP lines, and when this is a one-lined reply.
- */
-eReadState SMTP_C_ReadServerStatus(AsyncIO *IO)
-{
- eReadState Finished = eBufferNotEmpty;
-
- while (Finished == eBufferNotEmpty) {
- Finished = StrBufChunkSipLine(IO->IOBuf, &IO->RecvBuf);
-
- switch (Finished) {
- case eMustReadMore: /// read new from socket...
- return Finished;
- break;
- case eBufferNotEmpty: /* shouldn't happen... */
- case eReadSuccess: /// done for now...
- if (StrLength(IO->IOBuf) < 4)
- continue;
- if (ChrPtr(IO->IOBuf)[3] == '-')
- {
- SmtpOutMsg *Msg;
- Msg = (SmtpOutMsg *)IO->Data;
- if (Msg->MultiLineBuf == NULL)
- Msg->MultiLineBuf = NewStrBuf ();
- else
- StrBufAppendBufPlain(Msg->MultiLineBuf, HKEY("\n"), 0);
- StrBufAppendBuf(Msg->MultiLineBuf, IO->IOBuf, 0);
- Finished = eBufferNotEmpty;
- }
- else
- return Finished;
- break;
- case eReadFail: /// WHUT?
- ///todo: shut down!
- break;
- }
- }
- return Finished;
-}
-
-CTDL_MODULE_INIT(smtp_eventclient)
-{
- if (!threading) {
- // nothing here
- }
- return "smtpeventclient";
-}
projects / citadel.git / blobdiff