+++ /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) 1998-2015 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 "smtpqueue.h"
-#include "smtp_clienthandlers.h"
-#include "event_client.h"
-
-
-struct CitContext smtp_queue_CC;
-pthread_mutex_t ActiveQItemsLock;
-HashList *ActiveQItems = NULL;
-HashList *QItemHandlers = NULL;
-const unsigned short DefaultMXPort = 25;
-int max_sessions_for_outbound_smtp = 500; /* how many sessions might be active till we stop adding more smtp jobs */
-int ndelay_count = 50; /* every n queued messages we will sleep... */
-int delay_msec = 5000; /* this many seconds. */
-
-static const long MaxRetry = SMTP_RETRY_INTERVAL * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2;
-int MsgCount = 0;
-int run_queue_now = 0; /* Set to 1 to ignore SMTP send retry times */
-
-void RegisterQItemHandler(const char *Key, long Len, QItemHandler H)
-{
- QItemHandlerStruct *HS = (QItemHandlerStruct*)malloc(sizeof(QItemHandlerStruct));
- HS->H = H;
- Put(QItemHandlers, Key, Len, HS, NULL);
-}
-
-
-
-void smtp_try_one_queue_entry(OneQueItem *MyQItem,
- MailQEntry *MyQEntry,
- StrBuf *MsgText,
-/* KeepMsgText allows us to use MsgText as ours. */
- int KeepMsgText,
- int MsgCount,
- ParsedURL *RelayUrls);
-
-
-void smtp_evq_cleanup(void)
-{
-
- pthread_mutex_lock(&ActiveQItemsLock);
- DeleteHash(&QItemHandlers);
- DeleteHash(&ActiveQItems);
- pthread_mutex_unlock(&ActiveQItemsLock);
- pthread_setspecific(MyConKey, (void *)&smtp_queue_CC);
-/* citthread_mutex_destroy(&ActiveQItemsLock); TODO */
-}
-
-int DecreaseQReference(OneQueItem *MyQItem)
-{
- int IDestructQueItem;
-
- pthread_mutex_lock(&ActiveQItemsLock);
- MyQItem->ActiveDeliveries--;
- IDestructQueItem = MyQItem->ActiveDeliveries == 0;
- pthread_mutex_unlock(&ActiveQItemsLock);
- return IDestructQueItem;
-}
-
-void DecreaseShutdownDeliveries(OneQueItem *MyQItem)
-{
- pthread_mutex_lock(&ActiveQItemsLock);
- MyQItem->NotYetShutdownDeliveries--;
- pthread_mutex_unlock(&ActiveQItemsLock);
-}
-
-int GetShutdownDeliveries(OneQueItem *MyQItem)
-{
- int DestructNow;
-
- pthread_mutex_lock(&ActiveQItemsLock);
- DestructNow = MyQItem->ActiveDeliveries == 0;
- pthread_mutex_unlock(&ActiveQItemsLock);
- return DestructNow;
-}
-void RemoveQItem(OneQueItem *MyQItem)
-{
- long len;
- const char* Key;
- void *VData;
- HashPos *It;
-
- pthread_mutex_lock(&ActiveQItemsLock);
- It = GetNewHashPos(ActiveQItems, 0);
- if (GetHashPosFromKey(ActiveQItems, LKEY(MyQItem->MessageID), It))
- DeleteEntryFromHash(ActiveQItems, It);
- else
- {
- syslog(LOG_WARNING,
- "unable to find QItem with ID[%ld]",
- MyQItem->MessageID);
- while (GetNextHashPos(ActiveQItems, It, &len, &Key, &VData))
- syslog(LOG_WARNING,
- "have_: ID[%ld]",
- ((OneQueItem *)VData)->MessageID);
- }
- pthread_mutex_unlock(&ActiveQItemsLock);
- DeleteHashPos(&It);
-}
-
-
-void FreeMailQEntry(void *qv)
-{
- MailQEntry *Q = qv;
-/*
- syslog(LOG_DEBUG, "---------------%s--------------", __FUNCTION__);
- cit_backtrace();
-*/
- FreeStrBuf(&Q->Recipient);
- FreeStrBuf(&Q->StatusMessage);
- FreeStrBuf(&Q->AllStatusMessages);
- memset(Q, 0, sizeof(MailQEntry));
- free(Q);
-}
-void FreeQueItem(OneQueItem **Item)
-{
-/*
- syslog(LOG_DEBUG, "---------------%s--------------", __FUNCTION__);
- cit_backtrace();
-*/
- DeleteHash(&(*Item)->MailQEntries);
- FreeStrBuf(&(*Item)->EnvelopeFrom);
- FreeStrBuf(&(*Item)->BounceTo);
- FreeStrBuf(&(*Item)->SenderRoom);
- FreeURL(&(*Item)->URL);
- memset(*Item, 0, sizeof(OneQueItem));
- free(*Item);
- Item = NULL;
-}
-void HFreeQueItem(void *Item)
-{
- FreeQueItem((OneQueItem**)&Item);
-}
-
-/* inspect recipients with a status of:
- * - 0 (no delivery yet attempted)
- * - 3/4 (transient errors
- * were experienced and it's time to try again)
- */
-int CheckQEntryActive(MailQEntry *ThisItem)
-{
- if ((ThisItem->Status == 0) ||
- (ThisItem->Status == 3) ||
- (ThisItem->Status == 4))
- {
- return 1;
- }
- else
- return 0;
-}
-int CheckQEntryIsBounce(MailQEntry *ThisItem)
-{
- if ((ThisItem->Status == 3) ||
- (ThisItem->Status == 4) ||
- (ThisItem->Status == 5))
- {
- return 1;
- }
- else
- return 0;
-}
-
-int CountActiveQueueEntries(OneQueItem *MyQItem, int before)
-{
- HashPos *It;
- long len;
- long ActiveDeliveries;
- const char *Key;
- void *vQE;
-
- ActiveDeliveries = 0;
- It = GetNewHashPos(MyQItem->MailQEntries, 0);
- while (GetNextHashPos(MyQItem->MailQEntries, It, &len, &Key, &vQE))
- {
- int Active;
- MailQEntry *ThisItem = vQE;
-
- if (CheckQEntryActive(ThisItem))
- {
- ActiveDeliveries++;
- Active = 1;
- }
- else
- Active = 0;
- if (before)
- ThisItem->Active = Active;
- else
- ThisItem->StillActive = Active;
- }
- DeleteHashPos(&It);
- return ActiveDeliveries;
-}
-
-OneQueItem *DeserializeQueueItem(StrBuf *RawQItem, long QueMsgID)
-{
- OneQueItem *Item;
- const char *pLine = NULL;
- StrBuf *Line;
- StrBuf *Token;
- void *v;
-
- Item = (OneQueItem*)malloc(sizeof(OneQueItem));
- memset(Item, 0, sizeof(OneQueItem));
- Item->Retry = SMTP_RETRY_INTERVAL;
- Item->MessageID = -1;
- Item->QueMsgID = QueMsgID;
-
- Token = NewStrBuf();
- Line = NewStrBufPlain(NULL, 128);
- while (pLine != StrBufNOTNULL) {
- const char *pItemPart = NULL;
- void *vHandler;
-
- StrBufExtract_NextToken(Line, RawQItem, &pLine, '\n');
- if (StrLength(Line) == 0) continue;
- StrBufExtract_NextToken(Token, Line, &pItemPart, '|');
- if (GetHash(QItemHandlers, SKEY(Token), &vHandler))
- {
- QItemHandlerStruct *HS;
- HS = (QItemHandlerStruct*) vHandler;
- HS->H(Item, Line, &pItemPart);
- }
- }
- FreeStrBuf(&Line);
- FreeStrBuf(&Token);
-
- if (Item->Retry >= MaxRetry)
- Item->FailNow = 1;
-
- pthread_mutex_lock(&ActiveQItemsLock);
- if (GetHash(ActiveQItems,
- LKEY(Item->MessageID),
- &v))
- {
- /* WHOOPS. somebody else is already working on this. */
- pthread_mutex_unlock(&ActiveQItemsLock);
- FreeQueItem(&Item);
- return NULL;
- }
- else {
- /* mark our claim on this. */
- Put(ActiveQItems,
- LKEY(Item->MessageID),
- Item,
- HFreeQueItem);
- pthread_mutex_unlock(&ActiveQItemsLock);
- }
-
- return Item;
-}
-
-StrBuf *SerializeQueueItem(OneQueItem *MyQItem)
-{
- StrBuf *QMessage;
- HashPos *It;
- const char *Key;
- long len;
- void *vQE;
-
- QMessage = NewStrBufPlain(NULL, SIZ);
- StrBufPrintf(QMessage, "Content-type: %s\n", SPOOLMIME);
-// "attempted|%ld\n" "retry|%ld\n",, (long)time(NULL), (long)retry );
- StrBufAppendBufPlain(QMessage, HKEY("\nmsgid|"), 0);
- StrBufAppendPrintf(QMessage, "%ld", MyQItem->MessageID);
-
- StrBufAppendBufPlain(QMessage, HKEY("\nsubmitted|"), 0);
- StrBufAppendPrintf(QMessage, "%ld", MyQItem->Submitted);
-
- if (StrLength(MyQItem->BounceTo) > 0) {
- StrBufAppendBufPlain(QMessage, HKEY("\nbounceto|"), 0);
- StrBufAppendBuf(QMessage, MyQItem->BounceTo, 0);
- }
-
- if (StrLength(MyQItem->EnvelopeFrom) > 0) {
- StrBufAppendBufPlain(QMessage, HKEY("\nenvelope_from|"), 0);
- StrBufAppendBuf(QMessage, MyQItem->EnvelopeFrom, 0);
- }
-
- if (StrLength(MyQItem->SenderRoom) > 0) {
- StrBufAppendBufPlain(QMessage, HKEY("\nsource_room|"), 0);
- StrBufAppendBuf(QMessage, MyQItem->SenderRoom, 0);
- }
-
- StrBufAppendBufPlain(QMessage, HKEY("\nretry|"), 0);
- StrBufAppendPrintf(QMessage, "%ld",
- MyQItem->Retry);
-
- StrBufAppendBufPlain(QMessage, HKEY("\nattempted|"), 0);
- StrBufAppendPrintf(QMessage, "%ld",
- time(NULL) /*ctdl_ev_now()*/ + MyQItem->Retry);
-
- It = GetNewHashPos(MyQItem->MailQEntries, 0);
- while (GetNextHashPos(MyQItem->MailQEntries, It, &len, &Key, &vQE))
- {
- MailQEntry *ThisItem = vQE;
-
- StrBufAppendBufPlain(QMessage, HKEY("\nremote|"), 0);
- StrBufAppendBuf(QMessage, ThisItem->Recipient, 0);
- StrBufAppendBufPlain(QMessage, HKEY("|"), 0);
- StrBufAppendPrintf(QMessage, "%d", ThisItem->Status);
- StrBufAppendBufPlain(QMessage, HKEY("|"), 0);
- if (ThisItem->AllStatusMessages != NULL)
- StrBufAppendBuf(QMessage, ThisItem->AllStatusMessages, 0);
- else
- StrBufAppendBuf(QMessage, ThisItem->StatusMessage, 0);
- }
- DeleteHashPos(&It);
- StrBufAppendBufPlain(QMessage, HKEY("\n"), 0);
- return QMessage;
-}
-
-
-
-
-
-void NewMailQEntry(OneQueItem *Item)
-{
- Item->Current = (MailQEntry*) malloc(sizeof(MailQEntry));
- memset(Item->Current, 0, sizeof(MailQEntry));
-
- if (Item->MailQEntries == NULL)
- Item->MailQEntries = NewHash(1, Flathash);
- /* alocate big buffer so we won't get problems reallocating later. */
- Item->Current->StatusMessage = NewStrBufPlain(NULL, SIZ);
- Item->Current->n = GetCount(Item->MailQEntries);
- Put(Item->MailQEntries,
- IKEY(Item->Current->n),
- Item->Current,
- FreeMailQEntry);
-}
-
-void QItem_Handle_MsgID(OneQueItem *Item, StrBuf *Line, const char **Pos)
-{
- Item->MessageID = StrBufExtractNext_long(Line, Pos, '|');
-}
-
-void QItem_Handle_EnvelopeFrom(OneQueItem *Item, StrBuf *Line, const char **Pos)
-{
- if (Item->EnvelopeFrom == NULL)
- Item->EnvelopeFrom = NewStrBufPlain(NULL, StrLength(Line));
- StrBufExtract_NextToken(Item->EnvelopeFrom, Line, Pos, '|');
-}
-
-void QItem_Handle_BounceTo(OneQueItem *Item, StrBuf *Line, const char **Pos)
-{
- if (Item->BounceTo == NULL)
- Item->BounceTo = NewStrBufPlain(NULL, StrLength(Line));
- StrBufExtract_NextToken(Item->BounceTo, Line, Pos, '|');
-}
-
-void QItem_Handle_SenderRoom(OneQueItem *Item, StrBuf *Line, const char **Pos)
-{
- if (Item->SenderRoom == NULL)
- Item->SenderRoom = NewStrBufPlain(NULL, StrLength(Line));
- StrBufExtract_NextToken(Item->SenderRoom, Line, Pos, '|');
-}
-
-void QItem_Handle_Recipient(OneQueItem *Item, StrBuf *Line, const char **Pos)
-{
- if (Item->Current == NULL)
- NewMailQEntry(Item);
- if (Item->Current->Recipient == NULL)
- Item->Current->Recipient=NewStrBufPlain(NULL, StrLength(Line));
- StrBufExtract_NextToken(Item->Current->Recipient, Line, Pos, '|');
- Item->Current->Status = StrBufExtractNext_int(Line, Pos, '|');
- StrBufExtract_NextToken(Item->Current->StatusMessage, Line, Pos, '|');
- Item->Current = NULL; // TODO: is this always right?
-}
-
-
-void QItem_Handle_retry(OneQueItem *Item, StrBuf *Line, const char **Pos)
-{
- Item->Retry =
- StrBufExtractNext_int(Line, Pos, '|');
- if (Item->Retry == 0)
- Item->Retry = SMTP_RETRY_INTERVAL;
- else
- Item->Retry *= 2;
-}
-
-
-void QItem_Handle_Submitted(OneQueItem *Item, StrBuf *Line, const char **Pos)
-{
- Item->Submitted = atol(*Pos);
-
-}
-
-void QItem_Handle_Attempted(OneQueItem *Item, StrBuf *Line, const char **Pos)
-{
- Item->ReattemptWhen = StrBufExtractNext_int(Line, Pos, '|');
-}
-
-
-
-/**
- * this one has to have the context for loading the message via the redirect buffer...
- */
-StrBuf *smtp_load_msg(OneQueItem *MyQItem, int n, char **Author, char **Address)
-{
- CitContext *CCC=CC;
- StrBuf *SendMsg;
-
- CCC->redirect_buffer = NewStrBufPlain(NULL, SIZ);
- CtdlOutputMsg(MyQItem->MessageID,
- MT_RFC822, HEADERS_ALL,
- 0, 1, NULL,
- (ESC_DOT|SUPPRESS_ENV_TO),
- Author,
- Address,
- NULL);
-
- SendMsg = CCC->redirect_buffer;
- CCC->redirect_buffer = NULL;
- if ((StrLength(SendMsg) > 0) &&
- ChrPtr(SendMsg)[StrLength(SendMsg) - 1] != '\n') {
- syslog(LOG_WARNING,
- "[%d] Possible problem: message did not "
- "correctly terminate. (expecting 0x10, got 0x%02x)\n",
- MsgCount, //yes uncool, but best choice here...
- ChrPtr(SendMsg)[StrLength(SendMsg) - 1] );
- StrBufAppendBufPlain(SendMsg, HKEY("\r\n"), 0);
- }
- return SendMsg;
-}
-
-
-
-/*
- * smtp_do_bounce() is caled by smtp_do_procmsg() to scan a set of delivery
- * instructions for "5" codes (permanent fatal errors) and produce/deliver
- * a "bounce" message (delivery status notification).
- */
-void smtpq_do_bounce(OneQueItem *MyQItem, StrBuf *OMsgTxt, ParsedURL *Relay)
-{
- static int seq = 0;
-
- struct CtdlMessage *bmsg = NULL;
- StrBuf *boundary;
- StrBuf *Msg = NULL;
- StrBuf *BounceMB;
- recptypes *valid;
- time_t now;
-
- HashPos *It;
- void *vQE;
- long len;
- const char *Key;
-
- int first_attempt = 0;
- int successful_bounce = 0;
- int num_bounces = 0;
- int give_up = 0;
-
- syslog(LOG_DEBUG, "smtp_do_bounce() called\n");
-
- if (MyQItem->SendBounceMail == 0)
- return;
-
- now = time (NULL); //ev_time();
-
- if ( (now - MyQItem->Submitted) > SMTP_GIVE_UP ) {
- give_up = 1;
- }
-
- if (MyQItem->Retry == SMTP_RETRY_INTERVAL) {
- first_attempt = 1;
- }
-
- /*
- * Now go through the instructions checking for stuff.
- */
- Msg = NewStrBufPlain(NULL, 1024);
- It = GetNewHashPos(MyQItem->MailQEntries, 0);
- while (GetNextHashPos(MyQItem->MailQEntries, It, &len, &Key, &vQE))
- {
- MailQEntry *ThisItem = vQE;
- if ((ThisItem->Active && (ThisItem->Status == 5)) || /* failed now? */
- ((give_up == 1) && (ThisItem->Status != 2)) ||
- ((first_attempt == 1) && (ThisItem->Status != 2)))
- /* giving up after failed attempts... */
- {
- ++num_bounces;
-
- StrBufAppendBufPlain(Msg, HKEY(" "), 0);
- StrBufAppendBuf(Msg, ThisItem->Recipient, 0);
- StrBufAppendBufPlain(Msg, HKEY(": "), 0);
- if (ThisItem->AllStatusMessages != NULL)
- StrBufAppendBuf(Msg, ThisItem->AllStatusMessages, 0);
- else
- StrBufAppendBuf(Msg, ThisItem->StatusMessage, 0);
- StrBufAppendBufPlain(Msg, HKEY("\r\n"), 0);
- }
- }
- DeleteHashPos(&It);
-
- /* Deliver the bounce if there's anything worth mentioning */
- syslog(LOG_DEBUG, "num_bounces = %d\n", num_bounces);
-
- if (num_bounces == 0) {
- FreeStrBuf(&Msg);
- return;
- }
-
- if ((StrLength(MyQItem->SenderRoom) == 0) && MyQItem->HaveRelay) {
- const char *RelayUrlStr = "[not found]";
- /* one message that relaying is broken is enough; no extra room error message. */
- StrBuf *RelayDetails = NewStrBuf();
-
- if (Relay != NULL)
- RelayUrlStr = ChrPtr(Relay->URL);
-
- StrBufPrintf(RelayDetails,
- "Relaying via %s failed permanently. \n Reason:\n%s\n Revalidate your relay configuration.",
- RelayUrlStr,
- ChrPtr(Msg));
- CtdlAideMessage(ChrPtr(RelayDetails), "Relaying Failed");
- FreeStrBuf(&RelayDetails);
- }
-
- boundary = NewStrBufPlain(HKEY("=_Citadel_Multipart_"));
- StrBufAppendPrintf(boundary,
- "%s_%04x%04x",
- CtdlGetConfigStr("c_fqdn"),
- getpid(),
- ++seq);
-
- /* Start building our bounce message; go shopping for memory first. */
- BounceMB = NewStrBufPlain(
- NULL,
- 1024 + /* mime stuff.... */
- StrLength(Msg) + /* the bounce information... */
- StrLength(OMsgTxt)); /* the original message */
- if (BounceMB == NULL) {
- FreeStrBuf(&boundary);
- syslog(LOG_ERR, "Failed to alloc() bounce message.\n");
-
- return;
- }
-
- bmsg = (struct CtdlMessage *) malloc(sizeof(struct CtdlMessage));
- if (bmsg == NULL) {
- FreeStrBuf(&boundary);
- FreeStrBuf(&BounceMB);
- syslog(LOG_ERR, "Failed to alloc() bounce message.\n");
-
- return;
- }
- memset(bmsg, 0, sizeof(struct CtdlMessage));
-
-
- StrBufAppendBufPlain(BounceMB, HKEY("Content-type: multipart/mixed; boundary=\""), 0);
- StrBufAppendBuf(BounceMB, boundary, 0);
- StrBufAppendBufPlain(BounceMB, HKEY("\"\r\n"), 0);
- StrBufAppendBufPlain(BounceMB, HKEY("MIME-Version: 1.0\r\n"), 0);
- StrBufAppendBufPlain(BounceMB, HKEY("X-Mailer: " CITADEL "\r\n"), 0);
- StrBufAppendBufPlain(BounceMB, HKEY("\r\nThis is a multipart message in MIME format.\r\n\r\n"), 0);
- StrBufAppendBufPlain(BounceMB, HKEY("--"), 0);
- StrBufAppendBuf(BounceMB, boundary, 0);
- StrBufAppendBufPlain(BounceMB, HKEY("\r\n"), 0);
- StrBufAppendBufPlain(BounceMB, HKEY("Content-type: text/plain\r\n\r\n"), 0);
-
- if (give_up)
- StrBufAppendBufPlain(
- BounceMB,
- HKEY(
- "A message you sent could not be delivered "
- "to some or all of its recipients\n"
- "due to prolonged unavailability "
- "of its destination(s).\n"
- "Giving up on the following addresses:\n\n"
- ), 0);
- else
- StrBufAppendBufPlain(
- BounceMB,
- HKEY(
- "A message you sent could not be delivered "
- "to some or all of its recipients.\n"
- "The following addresses "
- "were undeliverable:\n\n"
- ), 0);
-
- StrBufAppendBuf(BounceMB, Msg, 0);
- FreeStrBuf(&Msg);
-
- if (StrLength(MyQItem->SenderRoom) > 0)
- {
- StrBufAppendBufPlain(
- BounceMB,
- HKEY("The message was originaly posted in: "), 0);
- StrBufAppendBuf(BounceMB, MyQItem->SenderRoom, 0);
- StrBufAppendBufPlain(
- BounceMB,
- HKEY("\n"), 0);
- }
-
- /* Attach the original message */
- StrBufAppendBufPlain(BounceMB, HKEY("\r\n--"), 0);
- StrBufAppendBuf(BounceMB, boundary, 0);
- StrBufAppendBufPlain(BounceMB, HKEY("\r\n"), 0);
- StrBufAppendBufPlain(BounceMB,
- HKEY("Content-type: message/rfc822\r\n"), 0);
- StrBufAppendBufPlain(BounceMB,
- HKEY("Content-Transfer-Encoding: 7bit\r\n"), 0);
- StrBufAppendBufPlain(BounceMB,
- HKEY("Content-Disposition: inline\r\n"), 0);
- StrBufAppendBufPlain(BounceMB, HKEY("\r\n"), 0);
- StrBufAppendBuf(BounceMB, OMsgTxt, 0);
-
- /* Close the multipart MIME scope */
- StrBufAppendBufPlain(BounceMB, HKEY("--"), 0);
- StrBufAppendBuf(BounceMB, boundary, 0);
- StrBufAppendBufPlain(BounceMB, HKEY("--\r\n"), 0);
-
- bmsg->cm_magic = CTDLMESSAGE_MAGIC;
- bmsg->cm_anon_type = MES_NORMAL;
- bmsg->cm_format_type = FMT_RFC822;
-
- CM_SetField(bmsg, eOriginalRoom, HKEY(MAILROOM));
- CM_SetField(bmsg, eAuthor, HKEY("Citadel"));
- CM_SetField(bmsg, eNodeName, CtdlGetConfigStr("c_nodename"), strlen(CtdlGetConfigStr("c_nodename")));
- CM_SetField(bmsg, eMsgSubject, HKEY("Delivery Status Notification (Failure)"));
- CM_SetAsFieldSB(bmsg, eMesageText, &BounceMB);
-
- /* First try the user who sent the message */
- if (StrLength(MyQItem->BounceTo) == 0) {
- syslog(LOG_ERR, "No bounce address specified\n");
- }
- else {
- syslog(LOG_DEBUG, "bounce to user? <%s>\n",
- ChrPtr(MyQItem->BounceTo));
- }
-
- /* Can we deliver the bounce to the original sender? */
- valid = validate_recipients(ChrPtr(MyQItem->BounceTo), NULL, 0);
- if ((valid != NULL) && (valid->num_error == 0)) {
- CtdlSubmitMsg(bmsg, valid, "", QP_EADDR);
- successful_bounce = 1;
- }
-
- /* If not, post it in the Aide> room */
- if (successful_bounce == 0) {
- CtdlSubmitMsg(bmsg, NULL, CtdlGetConfigStr("c_aideroom"), QP_EADDR);
- }
-
- /* Free up the memory we used */
- free_recipients(valid);
- FreeStrBuf(&boundary);
- CM_Free(bmsg);
- syslog(LOG_DEBUG, "Done processing bounces\n");
-}
-
-ParsedURL *LoadRelayUrls(OneQueItem *MyQItem,
- char *Author,
- char *Address)
-{
- int nRelays = 0;
- ParsedURL *RelayUrls = NULL;
- char mxbuf[SIZ];
- ParsedURL **Url = &MyQItem->URL;
-
- nRelays = get_hosts(mxbuf, "fallbackhost");
- if (nRelays > 0) {
- StrBuf *All;
- StrBuf *One;
- const char *Pos = NULL;
- All = NewStrBufPlain(mxbuf, -1);
- One = NewStrBufPlain(NULL, StrLength(All) + 1);
-
- while ((Pos != StrBufNOTNULL) &&
- ((Pos == NULL) ||
- !IsEmptyStr(Pos)))
- {
- StrBufExtract_NextToken(One, All, &Pos, '|');
- if (!ParseURL(Url, One, DefaultMXPort)) {
- syslog(LOG_DEBUG,
- "Failed to parse: %s\n",
- ChrPtr(One));
- }
- else {
- (*Url)->IsRelay = 1;
- MyQItem->HaveRelay = 1;
- }
- }
- FreeStrBuf(&All);
- FreeStrBuf(&One);
- }
- nRelays = get_hosts(mxbuf, "smarthost");
- if (nRelays > 0) {
- char *User;
- StrBuf *All;
- StrBuf *One;
- const char *Pos = NULL;
- All = NewStrBufPlain(mxbuf, -1);
- One = NewStrBufPlain(NULL, StrLength(All) + 1);
-
- while ((Pos != StrBufNOTNULL) &&
- ((Pos == NULL) ||
- !IsEmptyStr(Pos)))
- {
- StrBufExtract_NextToken(One, All, &Pos, '|');
- User = strchr(ChrPtr(One), ' ');
- if (User != NULL) {
- if (!strcmp(User + 1, Author) ||
- !strcmp(User + 1, Address))
- StrBufCutAt(One, 0, User);
- else {
- MyQItem->HaveRelay = 1;
- continue;
- }
- }
- if (!ParseURL(Url, One, DefaultMXPort)) {
- syslog(LOG_DEBUG,
- "Failed to parse: %s\n",
- ChrPtr(One));
- }
- else {
- ///if (!Url->IsIP)) // todo dupe me fork ipv6
- (*Url)->IsRelay = 1;
- MyQItem->HaveRelay = 1;
- }
- }
- FreeStrBuf(&All);
- FreeStrBuf(&One);
- }
- return RelayUrls;
-}
-/*
- * smtp_do_procmsg()
- *
- * Called by smtp_do_queue() to handle an individual message.
- */
-void smtp_do_procmsg(long msgnum, void *userdata) {
- time_t now;
- int mynumsessions = num_sessions;
- struct CtdlMessage *msg = NULL;
- char *Author = NULL;
- char *Address = NULL;
- char *instr = NULL;
- StrBuf *PlainQItem;
- OneQueItem *MyQItem;
- char *pch;
- HashPos *It;
- void *vQE;
- long len;
- const char *Key;
- int HaveBuffers = 0;
- StrBuf *Msg =NULL;
-
- if (mynumsessions > max_sessions_for_outbound_smtp) {
- syslog(LOG_INFO,
- "skipping because of num jobs %d > %d max_sessions_for_outbound_smtp",
- mynumsessions,
- max_sessions_for_outbound_smtp);
- }
-
- syslog(LOG_DEBUG, "smtp_do_procmsg(%ld)\n", msgnum);
- ///strcpy(envelope_from, "");
-
- msg = CtdlFetchMessage(msgnum, 1, 1);
- if (msg == NULL) {
- syslog(LOG_ERR, "tried %ld but no such message!\n",
- msgnum);
- return;
- }
-
- pch = instr = msg->cm_fields[eMesageText];
-
- /* Strip out the headers (no not amd any other non-instruction) line */
- while (pch != NULL) {
- pch = strchr(pch, '\n');
- if ((pch != NULL) &&
- ((*(pch + 1) == '\n') ||
- (*(pch + 1) == '\r')))
- {
- instr = pch + 2;
- pch = NULL;
- }
- }
- PlainQItem = NewStrBufPlain(instr, -1);
- CM_Free(msg);
- MyQItem = DeserializeQueueItem(PlainQItem, msgnum);
- FreeStrBuf(&PlainQItem);
-
- if (MyQItem == NULL) {
- syslog(LOG_ERR,
- "Msg No %ld: already in progress!\n",
- msgnum);
- return; /* s.b. else is already processing... */
- }
-
- /*
- * Postpone delivery if we've already tried recently.
- */
- now = time(NULL);
- if ((MyQItem->ReattemptWhen != 0) &&
- (now < MyQItem->ReattemptWhen) &&
- (run_queue_now == 0))
- {
- syslog(LOG_DEBUG,
- "Retry time not yet reached. %ld seconds left.",
- MyQItem->ReattemptWhen - now);
-
- It = GetNewHashPos(MyQItem->MailQEntries, 0);
- pthread_mutex_lock(&ActiveQItemsLock);
- {
- if (GetHashPosFromKey(ActiveQItems,
- LKEY(MyQItem->MessageID),
- It))
- {
- DeleteEntryFromHash(ActiveQItems, It);
- }
- }
- pthread_mutex_unlock(&ActiveQItemsLock);
- ////FreeQueItem(&MyQItem); TODO: DeleteEntryFromHash frees this?
- DeleteHashPos(&It);
- return;
- }
-
- /*
- * Bail out if there's no actual message associated with this
- */
- if (MyQItem->MessageID < 0L) {
- syslog(LOG_ERR, "no 'msgid' directive found!\n");
- It = GetNewHashPos(MyQItem->MailQEntries, 0);
- pthread_mutex_lock(&ActiveQItemsLock);
- {
- if (GetHashPosFromKey(ActiveQItems,
- LKEY(MyQItem->MessageID),
- It))
- {
- DeleteEntryFromHash(ActiveQItems, It);
- }
- }
- pthread_mutex_unlock(&ActiveQItemsLock);
- DeleteHashPos(&It);
- ////FreeQueItem(&MyQItem); TODO: DeleteEntryFromHash frees this?
- return;
- }
-
-
- It = GetNewHashPos(MyQItem->MailQEntries, 0);
- while (GetNextHashPos(MyQItem->MailQEntries, It, &len, &Key, &vQE))
- {
- MailQEntry *ThisItem = vQE;
- syslog(LOG_DEBUG, "SMTP Queue: Task: <%s> %d\n",
- ChrPtr(ThisItem->Recipient),
- ThisItem->Active);
- }
- DeleteHashPos(&It);
-
- MyQItem->NotYetShutdownDeliveries =
- MyQItem->ActiveDeliveries = CountActiveQueueEntries(MyQItem, 1);
-
- /* failsafe against overload:
- * will we exceed the limit set?
- */
- if ((MyQItem->ActiveDeliveries + mynumsessions > max_sessions_for_outbound_smtp) &&
- /* if yes, did we reach more than half of the quota? */
- ((mynumsessions * 2) > max_sessions_for_outbound_smtp) &&
- /* if... would we ever fit into half of the quota?? */
- (((MyQItem->ActiveDeliveries * 2) < max_sessions_for_outbound_smtp)))
- {
- /* abort delivery for another time. */
- syslog(LOG_INFO,
- "SMTP Queue: skipping because of num jobs %d + %ld > %d max_sessions_for_outbound_smtp",
- mynumsessions,
- MyQItem->ActiveDeliveries,
- max_sessions_for_outbound_smtp);
-
- It = GetNewHashPos(MyQItem->MailQEntries, 0);
- pthread_mutex_lock(&ActiveQItemsLock);
- {
- if (GetHashPosFromKey(ActiveQItems,
- LKEY(MyQItem->MessageID),
- It))
- {
- DeleteEntryFromHash(ActiveQItems, It);
- }
- }
- pthread_mutex_unlock(&ActiveQItemsLock);
-
- return;
- }
-
-
- if (MyQItem->ActiveDeliveries > 0)
- {
- ParsedURL *RelayUrls = NULL;
- int nActivated = 0;
- int n = MsgCount++;
- int m = MyQItem->ActiveDeliveries;
- int i = 1;
-
- It = GetNewHashPos(MyQItem->MailQEntries, 0);
-
- Msg = smtp_load_msg(MyQItem, n, &Author, &Address);
- RelayUrls = LoadRelayUrls(MyQItem, Author, Address);
- if ((RelayUrls == NULL) && MyQItem->HaveRelay) {
-
- while ((i <= m) &&
- (GetNextHashPos(MyQItem->MailQEntries,
- It, &len, &Key, &vQE)))
- {
- int KeepBuffers = (i == m);
- MailQEntry *ThisItem = vQE;
- StrBufPrintf(ThisItem->StatusMessage,
- "No relay configured matching %s / %s",
- (Author != NULL)? Author : "",
- (Address != NULL)? Address : "");
- ThisItem->Status = 5;
-
- nActivated++;
-
- if (i > 1) n = MsgCount++;
- syslog(LOG_INFO,
- "SMTPC: giving up on <%ld> <%s> %d / %d \n",
- MyQItem->MessageID,
- ChrPtr(ThisItem->Recipient),
- i,
- m);
- (*((int*) userdata)) ++;
- smtp_try_one_queue_entry(MyQItem,
- ThisItem,
- Msg,
- KeepBuffers,
- n,
- RelayUrls);
-
- if (KeepBuffers) HaveBuffers++;
-
- i++;
- }
- if (Author != NULL) free (Author);
- if (Address != NULL) free (Address);
- DeleteHashPos(&It);
-
- return;
- }
- if (Author != NULL) free (Author);
- if (Address != NULL) free (Address);
-
- while ((i <= m) &&
- (GetNextHashPos(MyQItem->MailQEntries,
- It, &len, &Key, &vQE)))
- {
- MailQEntry *ThisItem = vQE;
-
- if (ThisItem->Active == 1)
- {
- int KeepBuffers = (i == m);
-
- nActivated++;
- if (nActivated % ndelay_count == 0)
- usleep(delay_msec);
-
- if (i > 1) n = MsgCount++;
- syslog(LOG_DEBUG,
- "SMTPC: Trying <%ld> <%s> %d / %d \n",
- MyQItem->MessageID,
- ChrPtr(ThisItem->Recipient),
- i,
- m);
- (*((int*) userdata)) ++;
- smtp_try_one_queue_entry(MyQItem,
- ThisItem,
- Msg,
- KeepBuffers,
- n,
- RelayUrls);
-
- if (KeepBuffers) HaveBuffers++;
-
- i++;
- }
- }
- DeleteHashPos(&It);
- }
- else
- {
- It = GetNewHashPos(MyQItem->MailQEntries, 0);
- pthread_mutex_lock(&ActiveQItemsLock);
- {
- if (GetHashPosFromKey(ActiveQItems,
- LKEY(MyQItem->MessageID),
- It))
- {
- DeleteEntryFromHash(ActiveQItems, It);
- }
- else
- {
- long len;
- const char* Key;
- void *VData;
-
- syslog(LOG_WARNING,
- "unable to find QItem with ID[%ld]",
- MyQItem->MessageID);
- while (GetNextHashPos(ActiveQItems,
- It,
- &len,
- &Key,
- &VData))
- {
- syslog(LOG_WARNING,
- "have: ID[%ld]",
- ((OneQueItem *)VData)->MessageID);
- }
- }
-
- }
- pthread_mutex_unlock(&ActiveQItemsLock);
- DeleteHashPos(&It);
- ////FreeQueItem(&MyQItem); TODO: DeleteEntryFromHash frees this?
-
-// TODO: bounce & delete?
-
- }
- if (!HaveBuffers) {
- FreeStrBuf (&Msg);
-// TODO : free RelayUrls
- }
-}
-
-
-
-/*
- * smtp_queue_thread()
- *
- * Run through the queue sending out messages.
- */
-void smtp_do_queue(void) {
- int num_processed = 0;
- int num_activated = 0;
-
- pthread_setspecific(MyConKey, (void *)&smtp_queue_CC);
- syslog(LOG_DEBUG, "processing outbound queue");
-
- if (CtdlGetRoom(&CC->room, SMTP_SPOOLOUT_ROOM) != 0) {
- syslog(LOG_ERR, "Cannot find room <%s>", SMTP_SPOOLOUT_ROOM);
- }
- else {
- num_processed = CtdlForEachMessage(MSGS_ALL,
- 0L,
- NULL,
- SPOOLMIME,
- NULL,
- smtp_do_procmsg,
- &num_activated);
- }
- if (num_activated > 0) {
- syslog(LOG_INFO,
- "queue run completed; %d messages processed %d activated",
- num_processed, num_activated);
- }
-
-}
-
-
-
-/*
- * Initialize the SMTP outbound queue
- */
-void smtp_init_spoolout(void) {
- struct ctdlroom qrbuf;
-
- /*
- * Create the room. This will silently fail if the room already
- * exists, and that's perfectly ok, because we want it to exist.
- */
- CtdlCreateRoom(SMTP_SPOOLOUT_ROOM, 3, "", 0, 1, 0, VIEW_QUEUE);
-
- /*
- * Make sure it's set to be a "system room" so it doesn't show up
- * in the <K>nown rooms list for Aides.
- */
- if (CtdlGetRoomLock(&qrbuf, SMTP_SPOOLOUT_ROOM) == 0) {
- qrbuf.QRflags2 |= QR2_SYSTEM;
- CtdlPutRoomLock(&qrbuf);
- }
-}
-
-
-
-
-/*****************************************************************************/
-/* SMTP UTILITY COMMANDS */
-/*****************************************************************************/
-
-void cmd_smtp(char *argbuf) {
- char cmd[64];
- char node[256];
- char buf[1024];
- int i;
- int num_mxhosts;
-
- if (CtdlAccessCheck(ac_aide)) return;
-
- extract_token(cmd, argbuf, 0, '|', sizeof cmd);
-
- if (!strcasecmp(cmd, "mx")) {
- extract_token(node, argbuf, 1, '|', sizeof node);
- num_mxhosts = getmx(buf, node);
- cprintf("%d %d MX hosts listed for %s\n",
- LISTING_FOLLOWS, num_mxhosts, node);
- for (i=0; i<num_mxhosts; ++i) {
- extract_token(node, buf, i, '|', sizeof node);
- cprintf("%s\n", node);
- }
- cprintf("000\n");
- return;
- }
-
- else if (!strcasecmp(cmd, "runqueue")) {
- run_queue_now = 1;
- cprintf("%d All outbound SMTP will be retried now.\n", CIT_OK);
- return;
- }
-
- else {
- cprintf("%d Invalid command.\n", ERROR + ILLEGAL_VALUE);
- }
-
-}
-
-int smtp_aftersave(struct CtdlMessage *msg,
- recptypes *recps)
-{
- /* For internet mail, generate delivery instructions.
- * Yes, this is recursive. Deal with it. Infinite recursion does
- * not happen because the delivery instructions message does not
- * contain a recipient.
- */
- if ((recps != NULL) && (recps->num_internet > 0)) {
- struct CtdlMessage *imsg = NULL;
- char recipient[SIZ];
- StrBuf *SpoolMsg = NewStrBuf();
- long nTokens;
- int i;
-
- syslog(LOG_DEBUG, "Generating delivery instructions\n");
-
- StrBufPrintf(SpoolMsg,
- "Content-type: "SPOOLMIME"\n"
- "\n"
- "msgid|%s\n"
- "submitted|%ld\n"
- "bounceto|%s\n",
- msg->cm_fields[eVltMsgNum],
- (long)time(NULL),
- recps->bounce_to);
-
- if (recps->envelope_from != NULL) {
- StrBufAppendBufPlain(SpoolMsg, HKEY("envelope_from|"), 0);
- StrBufAppendBufPlain(SpoolMsg, recps->envelope_from, -1, 0);
- StrBufAppendBufPlain(SpoolMsg, HKEY("\n"), 0);
- }
- if (recps->sending_room != NULL) {
- StrBufAppendBufPlain(SpoolMsg, HKEY("source_room|"), 0);
- StrBufAppendBufPlain(SpoolMsg, recps->sending_room, -1, 0);
- StrBufAppendBufPlain(SpoolMsg, HKEY("\n"), 0);
- }
-
- nTokens = num_tokens(recps->recp_internet, '|');
- for (i = 0; i < nTokens; i++) {
- long len;
- len = extract_token(recipient, recps->recp_internet, i, '|', sizeof recipient);
- if (len > 0) {
- StrBufAppendBufPlain(SpoolMsg, HKEY("remote|"), 0);
- StrBufAppendBufPlain(SpoolMsg, recipient, len, 0);
- StrBufAppendBufPlain(SpoolMsg, HKEY("|0||\n"), 0);
- }
- }
-
- imsg = malloc(sizeof(struct CtdlMessage));
- memset(imsg, 0, sizeof(struct CtdlMessage));
- imsg->cm_magic = CTDLMESSAGE_MAGIC;
- imsg->cm_anon_type = MES_NORMAL;
- imsg->cm_format_type = FMT_RFC822;
- CM_SetField(imsg, eMsgSubject, HKEY("QMSG"));
- CM_SetField(imsg, eAuthor, HKEY("Citadel"));
- CM_SetField(imsg, eJournal, HKEY("do not journal"));
- CM_SetAsFieldSB(imsg, eMesageText, &SpoolMsg);
- CtdlSubmitMsg(imsg, NULL, SMTP_SPOOLOUT_ROOM, QP_EADDR);
- CM_Free(imsg);
- }
- return 0;
-}
-
-CTDL_MODULE_INIT(smtp_queu)
-{
- char *pstr;
-
- if (!threading)
- {
- pstr = getenv("CITSERVER_n_session_max");
- if ((pstr != NULL) && (*pstr != '\0'))
- max_sessions_for_outbound_smtp = atol(pstr); /* how many sessions might be active till we stop adding more smtp jobs */
-
- pstr = getenv("CITSERVER_smtp_n_delay_count");
- if ((pstr != NULL) && (*pstr != '\0'))
- ndelay_count = atol(pstr); /* every n queued messages we will sleep... */
-
- pstr = getenv("CITSERVER_smtp_delay");
- if ((pstr != NULL) && (*pstr != '\0'))
- delay_msec = atol(pstr) * 1000; /* this many seconds. */
-
- CtdlRegisterMessageHook(smtp_aftersave, EVT_AFTERSAVE);
-
- CtdlFillSystemContext(&smtp_queue_CC, "SMTP_Send");
- ActiveQItems = NewHash(1, lFlathash);
- pthread_mutex_init(&ActiveQItemsLock, NULL);
-
- QItemHandlers = NewHash(0, NULL);
-
- RegisterQItemHandler(HKEY("msgid"), QItem_Handle_MsgID);
- RegisterQItemHandler(HKEY("envelope_from"), QItem_Handle_EnvelopeFrom);
- RegisterQItemHandler(HKEY("retry"), QItem_Handle_retry);
- RegisterQItemHandler(HKEY("attempted"), QItem_Handle_Attempted);
- RegisterQItemHandler(HKEY("remote"), QItem_Handle_Recipient);
- RegisterQItemHandler(HKEY("bounceto"), QItem_Handle_BounceTo);
- RegisterQItemHandler(HKEY("source_room"), QItem_Handle_SenderRoom);
- RegisterQItemHandler(HKEY("submitted"), QItem_Handle_Submitted);
-
- smtp_init_spoolout();
-
- CtdlRegisterEVCleanupHook(smtp_evq_cleanup);
-
- CtdlRegisterProtoHook(cmd_smtp, "SMTP", "SMTP utility commands");
- CtdlRegisterSessionHook(smtp_do_queue, EVT_TIMER, PRIO_SEND + 10);
- }
-
- /* return our Subversion id for the Log */
- return "smtpeventclient";
-}
projects / citadel.git / blobdiff