citadel/modules/smtp/serv_smtpqueue.c

   1 /*
   2  * This module is an SMTP and ESMTP implementation for the Citadel system.
   3  * It is compliant with all of the following:
   4  *
   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
  19  *
  20  * The VRFY and EXPN commands have been removed from this implementation
  21  * because nobody uses these commands anymore, except for spammers.
  22  *
  23  * Copyright (c) 1998-2012 by the citadel.org team
  24  *
  25  *  This program is open source software; you can redistribute it and/or modify
  26  *  it under the terms of the GNU General Public License version 3.
  27  *
  28  *
  29  *
  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.
  34  *
  35  *
  36  *
  37  *
  38  */
  39
  40 #include "sysdep.h"
  41 #include <stdlib.h>
  42 #include <unistd.h>
  43 #include <stdio.h>
  44 #include <termios.h>
  45 #include <fcntl.h>
  46 #include <signal.h>
  47 #include <pwd.h>
  48 #include <errno.h>
  49 #include <sys/types.h>
  50 #include <syslog.h>
  51
  52 #if TIME_WITH_SYS_TIME
  53 # include <sys/time.h>
  54 # include <time.h>
  55 #else
  56 # if HAVE_SYS_TIME_H
  57 #  include <sys/time.h>
  58 # else
  59 #  include <time.h>
  60 # endif
  61 #endif
  62 #include <sys/wait.h>
  63 #include <ctype.h>
  64 #include <string.h>
  65 #include <limits.h>
  66 #include <sys/socket.h>
  67 #include <netinet/in.h>
  68 #include <arpa/inet.h>
  69 #include <libcitadel.h>
  70 #include "citadel.h"
  71 #include "server.h"
  72 #include "citserver.h"
  73 #include "support.h"
  74 #include "config.h"
  75 #include "control.h"
  76 #include "user_ops.h"
  77 #include "database.h"
  78 #include "msgbase.h"
  79 #include "internet_addressing.h"
  80 #include "genstamp.h"
  81 #include "domain.h"
  82 #include "clientsocket.h"
  83 #include "locate_host.h"
  84 #include "citadel_dirs.h"
  85
  86 #include "ctdl_module.h"
  87
  88 #include "smtpqueue.h"
  89 #include "smtp_clienthandlers.h"
  90 #include "event_client.h"
  91
  92
  93 struct CitContext smtp_queue_CC;
  94 pthread_mutex_t ActiveQItemsLock;
  95 HashList *ActiveQItems  = NULL;
  96 HashList *QItemHandlers = NULL;
  97 const unsigned short DefaultMXPort = 25;
  98 int max_sessions_for_outbound_smtp = 500; /* how many sessions might be active till we stop adding more smtp jobs */
  99 int ndelay_count = 50; /* every n queued messages we will sleep... */
 100 int delay_msec = 5000; /* this many seconds. */
 101
 102 static const long MaxRetry = SMTP_RETRY_INTERVAL * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2;
 103 int MsgCount            = 0;
 104 int run_queue_now       = 0;    /* Set to 1 to ignore SMTP send retry times */
 105
 106 void RegisterQItemHandler(const char *Key, long Len, QItemHandler H)
 107 {
 108         QItemHandlerStruct *HS = (QItemHandlerStruct*)malloc(sizeof(QItemHandlerStruct));
 109         HS->H = H;
 110         Put(QItemHandlers, Key, Len, HS, NULL);
 111 }
 112
 113
 114
 115 void smtp_try_one_queue_entry(OneQueItem *MyQItem,
 116                               MailQEntry *MyQEntry,
 117                               StrBuf *MsgText,
 118 /* KeepMsgText allows us to use MsgText as ours. */
 119                               int KeepMsgText,
 120                               int MsgCount,
 121                               ParsedURL *RelayUrls);
 122
 123
 124 void smtp_evq_cleanup(void)
 125 {
 126
 127         pthread_mutex_lock(&ActiveQItemsLock);
 128         DeleteHash(&QItemHandlers);
 129         DeleteHash(&ActiveQItems);
 130         pthread_mutex_unlock(&ActiveQItemsLock);
 131         pthread_setspecific(MyConKey, (void *)&smtp_queue_CC);
 132 /*      citthread_mutex_destroy(&ActiveQItemsLock); TODO */
 133 }
 134
 135 int DecreaseQReference(OneQueItem *MyQItem)
 136 {
 137         int IDestructQueItem;
 138
 139         pthread_mutex_lock(&ActiveQItemsLock);
 140         MyQItem->ActiveDeliveries--;
 141         IDestructQueItem = MyQItem->ActiveDeliveries == 0;
 142         pthread_mutex_unlock(&ActiveQItemsLock);
 143         return IDestructQueItem;
 144 }
 145
 146 void DecreaseShutdownDeliveries(OneQueItem *MyQItem)
 147 {
 148         pthread_mutex_lock(&ActiveQItemsLock);
 149         MyQItem->NotYetShutdownDeliveries--;
 150         pthread_mutex_unlock(&ActiveQItemsLock);
 151 }
 152
 153 int GetShutdownDeliveries(OneQueItem *MyQItem)
 154 {
 155         int DestructNow;
 156
 157         pthread_mutex_lock(&ActiveQItemsLock);
 158         DestructNow = MyQItem->ActiveDeliveries == 0;
 159         pthread_mutex_unlock(&ActiveQItemsLock);
 160         return DestructNow;
 161 }
 162 void RemoveQItem(OneQueItem *MyQItem)
 163 {
 164         long len;
 165         const char* Key;
 166         void *VData;
 167         HashPos  *It;
 168
 169         pthread_mutex_lock(&ActiveQItemsLock);
 170         It = GetNewHashPos(ActiveQItems, 0);
 171         if (GetHashPosFromKey(ActiveQItems, LKEY(MyQItem->MessageID), It))
 172                 DeleteEntryFromHash(ActiveQItems, It);
 173         else
 174         {
 175                 SMTPC_syslog(LOG_WARNING,
 176                              "unable to find QItem with ID[%ld]",
 177                              MyQItem->MessageID);
 178                 while (GetNextHashPos(ActiveQItems, It, &len, &Key, &VData))
 179                         SMTPC_syslog(LOG_WARNING,
 180                                      "have_: ID[%ld]",
 181                                      ((OneQueItem *)VData)->MessageID);
 182         }
 183         pthread_mutex_unlock(&ActiveQItemsLock);
 184         DeleteHashPos(&It);
 185 }
 186
 187
 188 void FreeMailQEntry(void *qv)
 189 {
 190         MailQEntry *Q = qv;
 191 /*
 192         SMTPC_syslog(LOG_DEBUG, "---------------%s--------------", __FUNCTION__);
 193         cit_backtrace();
 194 */
 195         FreeStrBuf(&Q->Recipient);
 196         FreeStrBuf(&Q->StatusMessage);
 197         FreeStrBuf(&Q->AllStatusMessages);
 198         memset(Q, 0, sizeof(MailQEntry));
 199         free(Q);
 200 }
 201 void FreeQueItem(OneQueItem **Item)
 202 {
 203 /*
 204         SMTPC_syslog(LOG_DEBUG, "---------------%s--------------", __FUNCTION__);
 205         cit_backtrace();
 206 */
 207         DeleteHash(&(*Item)->MailQEntries);
 208         FreeStrBuf(&(*Item)->EnvelopeFrom);
 209         FreeStrBuf(&(*Item)->BounceTo);
 210         FreeStrBuf(&(*Item)->SenderRoom);
 211         FreeURL(&(*Item)->URL);
 212         memset(*Item, 0, sizeof(OneQueItem));
 213         free(*Item);
 214         Item = NULL;
 215 }
 216 void HFreeQueItem(void *Item)
 217 {
 218         FreeQueItem((OneQueItem**)&Item);
 219 }
 220
 221 /* inspect recipients with a status of:
 222  * - 0 (no delivery yet attempted)
 223  * - 3/4 (transient errors
 224  *        were experienced and it's time to try again)
 225  */
 226 int CheckQEntryActive(MailQEntry *ThisItem)
 227 {
 228         if ((ThisItem->Status == 0) ||
 229             (ThisItem->Status == 3) ||
 230             (ThisItem->Status == 4))
 231         {
 232                 return 1;
 233         }
 234         else
 235                 return 0;
 236 }
 237 int CheckQEntryIsBounce(MailQEntry *ThisItem)
 238 {
 239         if ((ThisItem->Status == 3) ||
 240             (ThisItem->Status == 4) ||
 241             (ThisItem->Status == 5))
 242         {
 243                 return 1;
 244         }
 245         else
 246                 return 0;
 247 }
 248
 249 int CountActiveQueueEntries(OneQueItem *MyQItem, int before)
 250 {
 251         HashPos  *It;
 252         long len;
 253         long ActiveDeliveries;
 254         const char *Key;
 255         void *vQE;
 256
 257         ActiveDeliveries = 0;
 258         It = GetNewHashPos(MyQItem->MailQEntries, 0);
 259         while (GetNextHashPos(MyQItem->MailQEntries, It, &len, &Key, &vQE))
 260         {
 261                 int Active;
 262                 MailQEntry *ThisItem = vQE;
 263
 264                 if (CheckQEntryActive(ThisItem))
 265                 {
 266                         ActiveDeliveries++;
 267                         Active = 1;
 268                 }
 269                 else
 270                         Active = 0;
 271                 if (before)
 272                         ThisItem->Active = Active;
 273                 else
 274                         ThisItem->StillActive = Active;
 275         }
 276         DeleteHashPos(&It);
 277         return ActiveDeliveries;
 278 }
 279
 280 OneQueItem *DeserializeQueueItem(StrBuf *RawQItem, long QueMsgID)
 281 {
 282         OneQueItem *Item;
 283         const char *pLine = NULL;
 284         StrBuf *Line;
 285         StrBuf *Token;
 286         void *v;
 287
 288         Item = (OneQueItem*)malloc(sizeof(OneQueItem));
 289         memset(Item, 0, sizeof(OneQueItem));
 290         Item->Retry = SMTP_RETRY_INTERVAL;
 291         Item->MessageID = -1;
 292         Item->QueMsgID = QueMsgID;
 293
 294         Token = NewStrBuf();
 295         Line = NewStrBufPlain(NULL, 128);
 296         while (pLine != StrBufNOTNULL) {
 297                 const char *pItemPart = NULL;
 298                 void *vHandler;
 299
 300                 StrBufExtract_NextToken(Line, RawQItem, &pLine, '\n');
 301                 if (StrLength(Line) == 0) continue;
 302                 StrBufExtract_NextToken(Token, Line, &pItemPart, '|');
 303                 if (GetHash(QItemHandlers, SKEY(Token), &vHandler))
 304                 {
 305                         QItemHandlerStruct *HS;
 306                         HS = (QItemHandlerStruct*) vHandler;
 307                         HS->H(Item, Line, &pItemPart);
 308                 }
 309         }
 310         FreeStrBuf(&Line);
 311         FreeStrBuf(&Token);
 312
 313         if (Item->Retry >= MaxRetry)
 314                 Item->FailNow = 1;
 315
 316         pthread_mutex_lock(&ActiveQItemsLock);
 317         if (GetHash(ActiveQItems,
 318                     LKEY(Item->MessageID),
 319                     &v))
 320         {
 321                 /* WHOOPS. somebody else is already working on this. */
 322                 pthread_mutex_unlock(&ActiveQItemsLock);
 323                 FreeQueItem(&Item);
 324                 return NULL;
 325         }
 326         else {
 327                 /* mark our claim on this. */
 328                 Put(ActiveQItems,
 329                     LKEY(Item->MessageID),
 330                     Item,
 331                     HFreeQueItem);
 332                 pthread_mutex_unlock(&ActiveQItemsLock);
 333         }
 334
 335         return Item;
 336 }
 337
 338 StrBuf *SerializeQueueItem(OneQueItem *MyQItem)
 339 {
 340         StrBuf *QMessage;
 341         HashPos  *It;
 342         const char *Key;
 343         long len;
 344         void *vQE;
 345
 346         QMessage = NewStrBufPlain(NULL, SIZ);
 347         StrBufPrintf(QMessage, "Content-type: %s\n", SPOOLMIME);
 348 //      "attempted|%ld\n"  "retry|%ld\n",, (long)time(NULL), (long)retry );
 349         StrBufAppendBufPlain(QMessage, HKEY("\nmsgid|"), 0);
 350         StrBufAppendPrintf(QMessage, "%ld", MyQItem->MessageID);
 351
 352         StrBufAppendBufPlain(QMessage, HKEY("\nsubmitted|"), 0);
 353         StrBufAppendPrintf(QMessage, "%ld", MyQItem->Submitted);
 354
 355         if (StrLength(MyQItem->BounceTo) > 0) {
 356                 StrBufAppendBufPlain(QMessage, HKEY("\nbounceto|"), 0);
 357                 StrBufAppendBuf(QMessage, MyQItem->BounceTo, 0);
 358         }
 359
 360         if (StrLength(MyQItem->EnvelopeFrom) > 0) {
 361                 StrBufAppendBufPlain(QMessage, HKEY("\nenvelope_from|"), 0);
 362                 StrBufAppendBuf(QMessage, MyQItem->EnvelopeFrom, 0);
 363         }
 364
 365         if (StrLength(MyQItem->SenderRoom) > 0) {
 366                 StrBufAppendBufPlain(QMessage, HKEY("\nsource_room|"), 0);
 367                 StrBufAppendBuf(QMessage, MyQItem->SenderRoom, 0);
 368         }
 369
 370         StrBufAppendBufPlain(QMessage, HKEY("\nretry|"), 0);
 371         StrBufAppendPrintf(QMessage, "%ld",
 372                            MyQItem->Retry);
 373
 374         StrBufAppendBufPlain(QMessage, HKEY("\nattempted|"), 0);
 375         StrBufAppendPrintf(QMessage, "%ld",
 376                            time(NULL) /*ctdl_ev_now()*/ + MyQItem->Retry);
 377
 378         It = GetNewHashPos(MyQItem->MailQEntries, 0);
 379         while (GetNextHashPos(MyQItem->MailQEntries, It, &len, &Key, &vQE))
 380         {
 381                 MailQEntry *ThisItem = vQE;
 382
 383                 StrBufAppendBufPlain(QMessage, HKEY("\nremote|"), 0);
 384                 StrBufAppendBuf(QMessage, ThisItem->Recipient, 0);
 385                 StrBufAppendBufPlain(QMessage, HKEY("|"), 0);
 386                 StrBufAppendPrintf(QMessage, "%d", ThisItem->Status);
 387                 StrBufAppendBufPlain(QMessage, HKEY("|"), 0);
 388                 if (ThisItem->AllStatusMessages != NULL)
 389                         StrBufAppendBuf(QMessage, ThisItem->AllStatusMessages, 0);
 390                 else
 391                         StrBufAppendBuf(QMessage, ThisItem->StatusMessage, 0);
 392         }
 393         DeleteHashPos(&It);
 394         StrBufAppendBufPlain(QMessage, HKEY("\n"), 0);
 395         return QMessage;
 396 }
 397
 398
 399
 400
 401
 402 void NewMailQEntry(OneQueItem *Item)
 403 {
 404         Item->Current = (MailQEntry*) malloc(sizeof(MailQEntry));
 405         memset(Item->Current, 0, sizeof(MailQEntry));
 406
 407         if (Item->MailQEntries == NULL)
 408                 Item->MailQEntries = NewHash(1, Flathash);
 409         /* alocate big buffer so we won't get problems reallocating later. */
 410         Item->Current->StatusMessage = NewStrBufPlain(NULL, SIZ);
 411         Item->Current->n = GetCount(Item->MailQEntries);
 412         Put(Item->MailQEntries,
 413             IKEY(Item->Current->n),
 414             Item->Current,
 415             FreeMailQEntry);
 416 }
 417
 418 void QItem_Handle_MsgID(OneQueItem *Item, StrBuf *Line, const char **Pos)
 419 {
 420         Item->MessageID = StrBufExtractNext_long(Line, Pos, '|');
 421 }
 422
 423 void QItem_Handle_EnvelopeFrom(OneQueItem *Item, StrBuf *Line, const char **Pos)
 424 {
 425         if (Item->EnvelopeFrom == NULL)
 426                 Item->EnvelopeFrom = NewStrBufPlain(NULL, StrLength(Line));
 427         StrBufExtract_NextToken(Item->EnvelopeFrom, Line, Pos, '|');
 428 }
 429
 430 void QItem_Handle_BounceTo(OneQueItem *Item, StrBuf *Line, const char **Pos)
 431 {
 432         if (Item->BounceTo == NULL)
 433                 Item->BounceTo = NewStrBufPlain(NULL, StrLength(Line));
 434         StrBufExtract_NextToken(Item->BounceTo, Line, Pos, '|');
 435 }
 436
 437 void QItem_Handle_SenderRoom(OneQueItem *Item, StrBuf *Line, const char **Pos)
 438 {
 439         if (Item->SenderRoom == NULL)
 440                 Item->SenderRoom = NewStrBufPlain(NULL, StrLength(Line));
 441         StrBufExtract_NextToken(Item->SenderRoom, Line, Pos, '|');
 442 }
 443
 444 void QItem_Handle_Recipient(OneQueItem *Item, StrBuf *Line, const char **Pos)
 445 {
 446         if (Item->Current == NULL)
 447                 NewMailQEntry(Item);
 448         if (Item->Current->Recipient == NULL)
 449                 Item->Current->Recipient=NewStrBufPlain(NULL, StrLength(Line));
 450         StrBufExtract_NextToken(Item->Current->Recipient, Line, Pos, '|');
 451         Item->Current->Status = StrBufExtractNext_int(Line, Pos, '|');
 452         StrBufExtract_NextToken(Item->Current->StatusMessage, Line, Pos, '|');
 453         Item->Current = NULL; // TODO: is this always right?
 454 }
 455
 456
 457 void QItem_Handle_retry(OneQueItem *Item, StrBuf *Line, const char **Pos)
 458 {
 459         Item->Retry =
 460                 StrBufExtractNext_int(Line, Pos, '|');
 461         if (Item->Retry == 0)
 462                 Item->Retry = SMTP_RETRY_INTERVAL;
 463         else
 464                 Item->Retry *= 2;
 465 }
 466
 467
 468 void QItem_Handle_Submitted(OneQueItem *Item, StrBuf *Line, const char **Pos)
 469 {
 470         Item->Submitted = atol(*Pos);
 471
 472 }
 473
 474 void QItem_Handle_Attempted(OneQueItem *Item, StrBuf *Line, const char **Pos)
 475 {
 476         Item->ReattemptWhen = StrBufExtractNext_int(Line, Pos, '|');
 477 }
 478
 479
 480
 481 /**
 482  * this one has to have the context for loading the message via the redirect buffer...
 483  */
 484 StrBuf *smtp_load_msg(OneQueItem *MyQItem, int n, char **Author, char **Address)
 485 {
 486         CitContext *CCC=CC;
 487         StrBuf *SendMsg;
 488
 489         CCC->redirect_buffer = NewStrBufPlain(NULL, SIZ);
 490         CtdlOutputMsg(MyQItem->MessageID,
 491                       MT_RFC822, HEADERS_ALL,
 492                       0, 1, NULL,
 493                       (ESC_DOT|SUPPRESS_ENV_TO),
 494                       Author,
 495                       Address);
 496
 497         SendMsg = CCC->redirect_buffer;
 498         CCC->redirect_buffer = NULL;
 499         if ((StrLength(SendMsg) > 0) &&
 500             ChrPtr(SendMsg)[StrLength(SendMsg) - 1] != '\n') {
 501                 SMTPC_syslog(LOG_WARNING,
 502                              "[%d] Possible problem: message did not "
 503                              "correctly terminate. (expecting 0x10, got 0x%02x)\n",
 504                              MsgCount, //yes uncool, but best choice here...
 505                              ChrPtr(SendMsg)[StrLength(SendMsg) - 1] );
 506                 StrBufAppendBufPlain(SendMsg, HKEY("\r\n"), 0);
 507         }
 508         return SendMsg;
 509 }
 510
 511
 512
 513 /*
 514  * smtp_do_bounce() is caled by smtp_do_procmsg() to scan a set of delivery
 515  * instructions for "5" codes (permanent fatal errors) and produce/deliver
 516  * a "bounce" message (delivery status notification).
 517  */
 518 void smtpq_do_bounce(OneQueItem *MyQItem, StrBuf *OMsgTxt, ParsedURL *Relay)
 519 {
 520         static int seq = 0;
 521
 522         struct CtdlMessage *bmsg = NULL;
 523         StrBuf *boundary;
 524         StrBuf *Msg = NULL;
 525         StrBuf *BounceMB;
 526         struct recptypes *valid;
 527         time_t now;
 528
 529         HashPos *It;
 530         void *vQE;
 531         long len;
 532         const char *Key;
 533
 534         int first_attempt = 0;
 535         int successful_bounce = 0;
 536         int num_bounces = 0;
 537         int give_up = 0;
 538
 539         SMTPCM_syslog(LOG_DEBUG, "smtp_do_bounce() called\n");
 540
 541         if (MyQItem->SendBounceMail == 0)
 542                 return;
 543
 544         now = time (NULL); //ev_time();
 545
 546         if ( (now - MyQItem->Submitted) > SMTP_GIVE_UP ) {
 547                 give_up = 1;
 548         }
 549
 550         if (MyQItem->Retry == SMTP_RETRY_INTERVAL) {
 551                 first_attempt = 1;
 552         }
 553
 554         /*
 555          * Now go through the instructions checking for stuff.
 556          */
 557         Msg = NewStrBufPlain(NULL, 1024);
 558         It = GetNewHashPos(MyQItem->MailQEntries, 0);
 559         while (GetNextHashPos(MyQItem->MailQEntries, It, &len, &Key, &vQE))
 560         {
 561                 MailQEntry *ThisItem = vQE;
 562                 if ((ThisItem->Active && (ThisItem->Status == 5)) || /* failed now? */
 563                     ((give_up == 1) && (ThisItem->Status != 2)) ||
 564                     ((first_attempt == 1) && (ThisItem->Status != 2)))
 565                         /* giving up after failed attempts... */
 566                 {
 567                         ++num_bounces;
 568
 569                         StrBufAppendBufPlain(Msg, HKEY(" "), 0);
 570                         StrBufAppendBuf(Msg, ThisItem->Recipient, 0);
 571                         StrBufAppendBufPlain(Msg, HKEY(": "), 0);
 572                         StrBufAppendBuf(Msg, ThisItem->StatusMessage, 0);
 573                         StrBufAppendBufPlain(Msg, HKEY("\r\n"), 0);
 574                 }
 575         }
 576         DeleteHashPos(&It);
 577
 578         /* Deliver the bounce if there's anything worth mentioning */
 579         SMTPC_syslog(LOG_DEBUG, "num_bounces = %d\n", num_bounces);
 580
 581         if (num_bounces == 0) {
 582                 FreeStrBuf(&Msg);
 583                 return;
 584         }
 585
 586         if ((StrLength(MyQItem->SenderRoom) == 0) && MyQItem->HaveRelay) {
 587                 const char *RelayUrlStr = "[not found]";
 588                 /* one message that relaying is broken is enough; no extra room error message. */
 589                 StrBuf *RelayDetails = NewStrBuf();
 590
 591                 if (Relay != NULL)
 592                         RelayUrlStr = ChrPtr(Relay->URL);
 593
 594                 StrBufPrintf(RelayDetails,
 595                              "Relaying via %s failed permanently. \n Reason:\n%s\n Revalidate your relay configuration.",
 596                              RelayUrlStr,
 597                              ChrPtr(Msg));
 598                 CtdlAideMessage(ChrPtr(RelayDetails), "Relaying Failed");
 599                 FreeStrBuf(&RelayDetails);
 600         }
 601
 602         boundary = NewStrBufPlain(HKEY("=_Citadel_Multipart_"));
 603         StrBufAppendPrintf(boundary,
 604                            "%s_%04x%04x",
 605                            config.c_fqdn,
 606                            getpid(),
 607                            ++seq);
 608
 609         /* Start building our bounce message; go shopping for memory first. */
 610         BounceMB = NewStrBufPlain(
 611                 NULL,
 612                 1024 + /* mime stuff.... */
 613                 StrLength(Msg) +  /* the bounce information... */
 614                 StrLength(OMsgTxt)); /* the original message */
 615         if (BounceMB == NULL) {
 616                 FreeStrBuf(&boundary);
 617                 SMTPCM_syslog(LOG_ERR, "Failed to alloc() bounce message.\n");
 618
 619                 return;
 620         }
 621
 622         bmsg = (struct CtdlMessage *) malloc(sizeof(struct CtdlMessage));
 623         if (bmsg == NULL) {
 624                 FreeStrBuf(&boundary);
 625                 FreeStrBuf(&BounceMB);
 626                 SMTPCM_syslog(LOG_ERR, "Failed to alloc() bounce message.\n");
 627
 628                 return;
 629         }
 630         memset(bmsg, 0, sizeof(struct CtdlMessage));
 631
 632
 633         StrBufAppendBufPlain(BounceMB, HKEY("Content-type: multipart/mixed; boundary=\""), 0);
 634         StrBufAppendBuf(BounceMB, boundary, 0);
 635         StrBufAppendBufPlain(BounceMB, HKEY("\"\r\n"), 0);
 636         StrBufAppendBufPlain(BounceMB, HKEY("MIME-Version: 1.0\r\n"), 0);
 637         StrBufAppendBufPlain(BounceMB, HKEY("X-Mailer: " CITADEL "\r\n"), 0);
 638         StrBufAppendBufPlain(BounceMB, HKEY("\r\nThis is a multipart message in MIME format.\r\n\r\n"), 0);
 639         StrBufAppendBufPlain(BounceMB, HKEY("--"), 0);
 640         StrBufAppendBuf(BounceMB, boundary, 0);
 641         StrBufAppendBufPlain(BounceMB, HKEY("\r\n"), 0);
 642         StrBufAppendBufPlain(BounceMB, HKEY("Content-type: text/plain\r\n\r\n"), 0);
 643
 644         if (give_up)
 645                 StrBufAppendBufPlain(
 646                         BounceMB,
 647                         HKEY(
 648                                 "A message you sent could not be delivered "
 649                                 "to some or all of its recipients\n"
 650                                 "due to prolonged unavailability "
 651                                 "of its destination(s).\n"
 652                                 "Giving up on the following addresses:\n\n"
 653                                 ), 0);
 654         else
 655                 StrBufAppendBufPlain(
 656                         BounceMB,
 657                         HKEY(
 658                                 "A message you sent could not be delivered "
 659                                 "to some or all of its recipients.\n"
 660                                 "The following addresses "
 661                                 "were undeliverable:\n\n"
 662                                 ), 0);
 663
 664         StrBufAppendBuf(BounceMB, Msg, 0);
 665         FreeStrBuf(&Msg);
 666
 667         if (StrLength(MyQItem->SenderRoom) > 0)
 668         {
 669                 StrBufAppendBufPlain(
 670                         BounceMB,
 671                         HKEY("The message was originaly posted in: "), 0);
 672                 StrBufAppendBuf(BounceMB, MyQItem->SenderRoom, 0);
 673                 StrBufAppendBufPlain(
 674                         BounceMB,
 675                         HKEY("\n"), 0);
 676         }
 677
 678         /* Attach the original message */
 679         StrBufAppendBufPlain(BounceMB, HKEY("\r\n--"), 0);
 680         StrBufAppendBuf(BounceMB, boundary, 0);
 681         StrBufAppendBufPlain(BounceMB, HKEY("\r\n"), 0);
 682         StrBufAppendBufPlain(BounceMB,
 683                              HKEY("Content-type: message/rfc822\r\n"), 0);
 684         StrBufAppendBufPlain(BounceMB,
 685                              HKEY("Content-Transfer-Encoding: 7bit\r\n"), 0);
 686         StrBufAppendBufPlain(BounceMB,
 687                              HKEY("Content-Disposition: inline\r\n"), 0);
 688         StrBufAppendBufPlain(BounceMB, HKEY("\r\n"), 0);
 689         StrBufAppendBuf(BounceMB, OMsgTxt, 0);
 690
 691         /* Close the multipart MIME scope */
 692         StrBufAppendBufPlain(BounceMB, HKEY("--"), 0);
 693         StrBufAppendBuf(BounceMB, boundary, 0);
 694         StrBufAppendBufPlain(BounceMB, HKEY("--\r\n"), 0);
 695
 696         bmsg->cm_magic = CTDLMESSAGE_MAGIC;
 697         bmsg->cm_anon_type = MES_NORMAL;
 698         bmsg->cm_format_type = FMT_RFC822;
 699
 700         bmsg->cm_fields['O'] = strdup(MAILROOM);
 701         bmsg->cm_fields['A'] = strdup("Citadel");
 702         bmsg->cm_fields['N'] = strdup(config.c_nodename);
 703         bmsg->cm_fields['U'] = strdup("Delivery Status Notification (Failure)");
 704         bmsg->cm_fields['M'] = SmashStrBuf(&BounceMB);
 705
 706         /* First try the user who sent the message */
 707         if (StrLength(MyQItem->BounceTo) == 0) {
 708                 SMTPCM_syslog(LOG_ERR, "No bounce address specified\n");
 709         }
 710         else {
 711                 SMTPC_syslog(LOG_DEBUG, "bounce to user? <%s>\n",
 712                        ChrPtr(MyQItem->BounceTo));
 713         }
 714
 715         /* Can we deliver the bounce to the original sender? */
 716         valid = validate_recipients(ChrPtr(MyQItem->BounceTo), NULL, 0);
 717         if ((valid != NULL) && (valid->num_error == 0)) {
 718                 CtdlSubmitMsg(bmsg, valid, "", QP_EADDR);
 719                 successful_bounce = 1;
 720         }
 721
 722         /* If not, post it in the Aide> room */
 723         if (successful_bounce == 0) {
 724                 CtdlSubmitMsg(bmsg, NULL, config.c_aideroom, QP_EADDR);
 725         }
 726
 727         /* Free up the memory we used */
 728         free_recipients(valid);
 729         FreeStrBuf(&boundary);
 730         CtdlFreeMessage(bmsg);
 731         SMTPCM_syslog(LOG_DEBUG, "Done processing bounces\n");
 732 }
 733
 734 ParsedURL *LoadRelayUrls(OneQueItem *MyQItem,
 735                          char *Author,
 736                          char *Address)
 737 {
 738         int nRelays = 0;
 739         ParsedURL *RelayUrls = NULL;
 740         char mxbuf[SIZ];
 741         ParsedURL **Url = &MyQItem->URL;
 742
 743         nRelays = get_hosts(mxbuf, "fallbackhost");
 744         if (nRelays > 0) {
 745                 StrBuf *All;
 746                 StrBuf *One;
 747                 const char *Pos = NULL;
 748                 All = NewStrBufPlain(mxbuf, -1);
 749                 One = NewStrBufPlain(NULL, StrLength(All) + 1);
 750
 751                 while ((Pos != StrBufNOTNULL) &&
 752                        ((Pos == NULL) ||
 753                         !IsEmptyStr(Pos)))
 754                 {
 755                         StrBufExtract_NextToken(One, All, &Pos, '|');
 756                         if (!ParseURL(Url, One, DefaultMXPort)) {
 757                                 SMTPC_syslog(LOG_DEBUG,
 758                                              "Failed to parse: %s\n",
 759                                              ChrPtr(One));
 760                         }
 761                         else {
 762                                 (*Url)->IsRelay = 1;
 763                                 MyQItem->HaveRelay = 1;
 764                         }
 765                 }
 766                 FreeStrBuf(&All);
 767                 FreeStrBuf(&One);
 768         }
 769         nRelays = get_hosts(mxbuf, "smarthost");
 770         if (nRelays > 0) {
 771                 char *User;
 772                 StrBuf *All;
 773                 StrBuf *One;
 774                 const char *Pos = NULL;
 775                 All = NewStrBufPlain(mxbuf, -1);
 776                 One = NewStrBufPlain(NULL, StrLength(All) + 1);
 777
 778                 while ((Pos != StrBufNOTNULL) &&
 779                        ((Pos == NULL) ||
 780                         !IsEmptyStr(Pos)))
 781                 {
 782                         StrBufExtract_NextToken(One, All, &Pos, '|');
 783                         User = strchr(ChrPtr(One), ' ');
 784                         if (User != NULL) {
 785                                 if (!strcmp(User + 1, Author) ||
 786                                     !strcmp(User + 1, Address))
 787                                         StrBufCutAt(One, 0, User);
 788                                 else {
 789                                         MyQItem->HaveRelay = 1;
 790                                         continue;
 791                                 }
 792                         }
 793                         if (!ParseURL(Url, One, DefaultMXPort)) {
 794                                 SMTPC_syslog(LOG_DEBUG,
 795                                              "Failed to parse: %s\n",
 796                                              ChrPtr(One));
 797                         }
 798                         else {
 799                                 ///if (!Url->IsIP)) // todo dupe me fork ipv6
 800                                 (*Url)->IsRelay = 1;
 801                                 MyQItem->HaveRelay = 1;
 802                         }
 803                 }
 804                 FreeStrBuf(&All);
 805                 FreeStrBuf(&One);
 806         }
 807         return RelayUrls;
 808 }
 809 /*
 810  * smtp_do_procmsg()
 811  *
 812  * Called by smtp_do_queue() to handle an individual message.
 813  */
 814 void smtp_do_procmsg(long msgnum, void *userdata) {
 815         time_t now;
 816         int mynumsessions = num_sessions;
 817         struct CtdlMessage *msg = NULL;
 818         char *Author = NULL;
 819         char *Address = NULL;
 820         char *instr = NULL;
 821         StrBuf *PlainQItem;
 822         OneQueItem *MyQItem;
 823         char *pch;
 824         HashPos  *It;
 825         void *vQE;
 826         long len;
 827         const char *Key;
 828         int HaveBuffers = 0;
 829         StrBuf *Msg =NULL;
 830
 831         if (mynumsessions > max_sessions_for_outbound_smtp) {
 832                 SMTPC_syslog(LOG_DEBUG,
 833                              "skipping because of num jobs %d > %d max_sessions_for_outbound_smtp",
 834                              mynumsessions,
 835                              max_sessions_for_outbound_smtp);
 836         }
 837
 838         SMTPC_syslog(LOG_DEBUG, "smtp_do_procmsg(%ld)\n", msgnum);
 839         ///strcpy(envelope_from, "");
 840
 841         msg = CtdlFetchMessage(msgnum, 1);
 842         if (msg == NULL) {
 843                 SMTPC_syslog(LOG_ERR, "tried %ld but no such message!\n",
 844                        msgnum);
 845                 return;
 846         }
 847
 848         pch = instr = msg->cm_fields['M'];
 849
 850         /* Strip out the headers (no not amd any other non-instruction) line */
 851         while (pch != NULL) {
 852                 pch = strchr(pch, '\n');
 853                 if ((pch != NULL) && (*(pch + 1) == '\n')) {
 854                         instr = pch + 2;
 855                         pch = NULL;
 856                 }
 857         }
 858         PlainQItem = NewStrBufPlain(instr, -1);
 859         CtdlFreeMessage(msg);
 860         MyQItem = DeserializeQueueItem(PlainQItem, msgnum);
 861         FreeStrBuf(&PlainQItem);
 862
 863         if (MyQItem == NULL) {
 864                 SMTPC_syslog(LOG_ERR,
 865                              "Msg No %ld: already in progress!\n",
 866                              msgnum);
 867                 return; /* s.b. else is already processing... */
 868         }
 869
 870         /*
 871          * Postpone delivery if we've already tried recently.
 872          */
 873         now = time(NULL);
 874         if ((MyQItem->ReattemptWhen != 0) &&
 875             (now < MyQItem->ReattemptWhen) &&
 876             (run_queue_now == 0))
 877         {
 878                 SMTPC_syslog(LOG_DEBUG,
 879                              "Retry time not yet reached. %ld seconds left.",
 880                              MyQItem->ReattemptWhen - now);
 881
 882                 It = GetNewHashPos(MyQItem->MailQEntries, 0);
 883                 pthread_mutex_lock(&ActiveQItemsLock);
 884                 {
 885                         if (GetHashPosFromKey(ActiveQItems,
 886                                               LKEY(MyQItem->MessageID),
 887                                               It))
 888                         {
 889                                 DeleteEntryFromHash(ActiveQItems, It);
 890                         }
 891                 }
 892                 pthread_mutex_unlock(&ActiveQItemsLock);
 893                 ////FreeQueItem(&MyQItem); TODO: DeleteEntryFromHash frees this?
 894                 DeleteHashPos(&It);
 895                 return;
 896         }
 897
 898         /*
 899          * Bail out if there's no actual message associated with this
 900          */
 901         if (MyQItem->MessageID < 0L) {
 902                 SMTPCM_syslog(LOG_ERR, "no 'msgid' directive found!\n");
 903                 It = GetNewHashPos(MyQItem->MailQEntries, 0);
 904                 pthread_mutex_lock(&ActiveQItemsLock);
 905                 {
 906                         if (GetHashPosFromKey(ActiveQItems,
 907                                               LKEY(MyQItem->MessageID),
 908                                               It))
 909                         {
 910                                 DeleteEntryFromHash(ActiveQItems, It);
 911                         }
 912                 }
 913                 pthread_mutex_unlock(&ActiveQItemsLock);
 914                 DeleteHashPos(&It);
 915                 ////FreeQueItem(&MyQItem); TODO: DeleteEntryFromHash frees this?
 916                 return;
 917         }
 918
 919
 920         It = GetNewHashPos(MyQItem->MailQEntries, 0);
 921         while (GetNextHashPos(MyQItem->MailQEntries, It, &len, &Key, &vQE))
 922         {
 923                 MailQEntry *ThisItem = vQE;
 924                 SMTPC_syslog(LOG_DEBUG, "SMTP Queue: Task: <%s> %d\n",
 925                              ChrPtr(ThisItem->Recipient),
 926                              ThisItem->Active);
 927         }
 928         DeleteHashPos(&It);
 929
 930         MyQItem->NotYetShutdownDeliveries =
 931                 MyQItem->ActiveDeliveries = CountActiveQueueEntries(MyQItem, 1);
 932
 933         /* failsafe against overload:
 934          * will we exceed the limit set?
 935          */
 936         if ((MyQItem->ActiveDeliveries + mynumsessions > max_sessions_for_outbound_smtp) &&
 937             /* if yes, did we reach more than half of the quota? */
 938             ((mynumsessions * 2) > max_sessions_for_outbound_smtp) &&
 939             /* if... would we ever fit into half of the quota?? */
 940             (((MyQItem->ActiveDeliveries * 2)  < max_sessions_for_outbound_smtp)))
 941         {
 942                 /* abort delivery for another time. */
 943                 SMTPC_syslog(LOG_DEBUG,
 944                              "SMTP Queue: skipping because of num jobs %d + %ld > %d max_sessions_for_outbound_smtp",
 945                              mynumsessions,
 946                              MyQItem->ActiveDeliveries,
 947                              max_sessions_for_outbound_smtp);
 948
 949                 FreeQueItem(&MyQItem);
 950
 951                 return;
 952         }
 953
 954
 955         if (MyQItem->ActiveDeliveries > 0)
 956         {
 957                 ParsedURL *RelayUrls = NULL;
 958                 int nActivated = 0;
 959                 int n = MsgCount++;
 960                 int m = MyQItem->ActiveDeliveries;
 961                 int i = 1;
 962
 963                 It = GetNewHashPos(MyQItem->MailQEntries, 0);
 964
 965                 Msg = smtp_load_msg(MyQItem, n, &Author, &Address);
 966                 RelayUrls = LoadRelayUrls(MyQItem, Author, Address);
 967                 if ((RelayUrls == NULL) && MyQItem->HaveRelay) {
 968
 969                         while ((i <= m) &&
 970                                (GetNextHashPos(MyQItem->MailQEntries,
 971                                                It, &len, &Key, &vQE)))
 972                         {
 973                                 int KeepBuffers = (i == m);
 974                                 MailQEntry *ThisItem = vQE;
 975                                 StrBufPrintf(ThisItem->StatusMessage,
 976                                              "No relay configured matching %s / %s",
 977                                              (Author != NULL)? Author : "",
 978                                              (Address != NULL)? Address : "");
 979                                 ThisItem->Status = 5;
 980
 981                                 nActivated++;
 982
 983                                 if (i > 1) n = MsgCount++;
 984                                 syslog(LOG_INFO,
 985                                        "SMTPC: giving up on <%ld> <%s> %d / %d \n",
 986                                        MyQItem->MessageID,
 987                                        ChrPtr(ThisItem->Recipient),
 988                                        i,
 989                                        m);
 990                                 (*((int*) userdata)) ++;
 991                                 smtp_try_one_queue_entry(MyQItem,
 992                                                          ThisItem,
 993                                                          Msg,
 994                                                          KeepBuffers,
 995                                                          n,
 996                                                          RelayUrls);
 997
 998                                 if (KeepBuffers) HaveBuffers = 1;
 999
1000                                 i++;
1001                         }
1002                         if (Author != NULL) free (Author);
1003                         if (Address != NULL) free (Address);
1004                         DeleteHashPos(&It);
1005
1006                         return;
1007                 }
1008                 if (Author != NULL) free (Author);
1009                 if (Address != NULL) free (Address);
1010
1011                 while ((i <= m) &&
1012                        (GetNextHashPos(MyQItem->MailQEntries,
1013                                        It, &len, &Key, &vQE)))
1014                 {
1015                         MailQEntry *ThisItem = vQE;
1016
1017                         if (ThisItem->Active == 1)
1018                         {
1019                                 int KeepBuffers = (i == m);
1020
1021                                 nActivated++;
1022                                 if (nActivated % ndelay_count == 0)
1023                                         usleep(delay_msec);
1024
1025                                 if (i > 1) n = MsgCount++;
1026                                 syslog(LOG_DEBUG,
1027                                        "SMTPC: Trying <%ld> <%s> %d / %d \n",
1028                                        MyQItem->MessageID,
1029                                        ChrPtr(ThisItem->Recipient),
1030                                        i,
1031                                        m);
1032                                 (*((int*) userdata)) ++;
1033                                 smtp_try_one_queue_entry(MyQItem,
1034                                                          ThisItem,
1035                                                          Msg,
1036                                                          KeepBuffers,
1037                                                          n,
1038                                                          RelayUrls);
1039
1040                                 if (KeepBuffers) HaveBuffers = 1;
1041
1042                                 i++;
1043                         }
1044                 }
1045                 DeleteHashPos(&It);
1046         }
1047         else
1048         {
1049                 It = GetNewHashPos(MyQItem->MailQEntries, 0);
1050                 pthread_mutex_lock(&ActiveQItemsLock);
1051                 {
1052                         if (GetHashPosFromKey(ActiveQItems,
1053                                               LKEY(MyQItem->MessageID),
1054                                               It))
1055                         {
1056                                 DeleteEntryFromHash(ActiveQItems, It);
1057                         }
1058                         else
1059                         {
1060                                 long len;
1061                                 const char* Key;
1062                                 void *VData;
1063
1064                                 SMTPC_syslog(LOG_WARNING,
1065                                              "unable to find QItem with ID[%ld]",
1066                                              MyQItem->MessageID);
1067                                 while (GetNextHashPos(ActiveQItems,
1068                                                       It,
1069                                                       &len,
1070                                                       &Key,
1071                                                       &VData))
1072                                 {
1073                                         SMTPC_syslog(LOG_WARNING,
1074                                                      "have: ID[%ld]",
1075                                                      ((OneQueItem *)VData)->MessageID);
1076                                 }
1077                         }
1078
1079                 }
1080                 pthread_mutex_unlock(&ActiveQItemsLock);
1081                 DeleteHashPos(&It);
1082                 ////FreeQueItem(&MyQItem); TODO: DeleteEntryFromHash frees this?
1083
1084 // TODO: bounce & delete?
1085
1086         }
1087         if (!HaveBuffers) {
1088                 FreeStrBuf (&Msg);
1089 // TODO : free RelayUrls
1090         }
1091 }
1092
1093
1094
1095 /*
1096  * smtp_queue_thread()
1097  *
1098  * Run through the queue sending out messages.
1099  */
1100 void smtp_do_queue(void) {
1101         int num_processed = 0;
1102         int num_activated = 0;
1103
1104         pthread_setspecific(MyConKey, (void *)&smtp_queue_CC);
1105         SMTPCM_syslog(LOG_INFO, "processing outbound queue");
1106
1107         if (CtdlGetRoom(&CC->room, SMTP_SPOOLOUT_ROOM) != 0) {
1108                 SMTPC_syslog(LOG_ERR, "Cannot find room <%s>", SMTP_SPOOLOUT_ROOM);
1109         }
1110         else {
1111                 num_processed = CtdlForEachMessage(MSGS_ALL,
1112                                                    0L,
1113                                                    NULL,
1114                                                    SPOOLMIME,
1115                                                    NULL,
1116                                                    smtp_do_procmsg,
1117                                                    &num_activated);
1118         }
1119         SMTPC_syslog(LOG_INFO,
1120                      "queue run completed; %d messages processed %d activated",
1121                      num_processed, num_activated);
1122
1123 }
1124
1125
1126
1127 /*
1128  * Initialize the SMTP outbound queue
1129  */
1130 void smtp_init_spoolout(void) {
1131         struct ctdlroom qrbuf;
1132
1133         /*
1134          * Create the room.  This will silently fail if the room already
1135          * exists, and that's perfectly ok, because we want it to exist.
1136          */
1137         CtdlCreateRoom(SMTP_SPOOLOUT_ROOM, 3, "", 0, 1, 0, VIEW_QUEUE);
1138
1139         /*
1140          * Make sure it's set to be a "system room" so it doesn't show up
1141          * in the <K>nown rooms list for Aides.
1142          */
1143         if (CtdlGetRoomLock(&qrbuf, SMTP_SPOOLOUT_ROOM) == 0) {
1144                 qrbuf.QRflags2 |= QR2_SYSTEM;
1145                 CtdlPutRoomLock(&qrbuf);
1146         }
1147 }
1148
1149
1150
1151
1152 /*****************************************************************************/
1153 /*                          SMTP UTILITY COMMANDS                            */
1154 /*****************************************************************************/
1155
1156 void cmd_smtp(char *argbuf) {
1157         char cmd[64];
1158         char node[256];
1159         char buf[1024];
1160         int i;
1161         int num_mxhosts;
1162
1163         if (CtdlAccessCheck(ac_aide)) return;
1164
1165         extract_token(cmd, argbuf, 0, '|', sizeof cmd);
1166
1167         if (!strcasecmp(cmd, "mx")) {
1168                 extract_token(node, argbuf, 1, '|', sizeof node);
1169                 num_mxhosts = getmx(buf, node);
1170                 cprintf("%d %d MX hosts listed for %s\n",
1171                         LISTING_FOLLOWS, num_mxhosts, node);
1172                 for (i=0; i<num_mxhosts; ++i) {
1173                         extract_token(node, buf, i, '|', sizeof node);
1174                         cprintf("%s\n", node);
1175                 }
1176                 cprintf("000\n");
1177                 return;
1178         }
1179
1180         else if (!strcasecmp(cmd, "runqueue")) {
1181                 run_queue_now = 1;
1182                 cprintf("%d All outbound SMTP will be retried now.\n", CIT_OK);
1183                 return;
1184         }
1185
1186         else {
1187                 cprintf("%d Invalid command.\n", ERROR + ILLEGAL_VALUE);
1188         }
1189
1190 }
1191
1192
1193 CTDL_MODULE_INIT(smtp_queu)
1194 {
1195         char *pstr;
1196
1197         if (!threading)
1198         {
1199                 pstr = getenv("CITSERVER_n_session_max");
1200                 if ((pstr != NULL) && (*pstr != '\0'))
1201                         max_sessions_for_outbound_smtp = atol(pstr); /* how many sessions might be active till we stop adding more smtp jobs */
1202
1203                 pstr = getenv("CITSERVER_smtp_n_delay_count");
1204                 if ((pstr != NULL) && (*pstr != '\0'))
1205                         ndelay_count = atol(pstr); /* every n queued messages we will sleep... */
1206
1207                 pstr = getenv("CITSERVER_smtp_delay");
1208                 if ((pstr != NULL) && (*pstr != '\0'))
1209                         delay_msec = atol(pstr) * 1000; /* this many seconds. */
1210
1211
1212
1213
1214                 CtdlFillSystemContext(&smtp_queue_CC, "SMTP_Send");
1215                 ActiveQItems = NewHash(1, lFlathash);
1216                 pthread_mutex_init(&ActiveQItemsLock, NULL);
1217
1218                 QItemHandlers = NewHash(0, NULL);
1219
1220                 RegisterQItemHandler(HKEY("msgid"),             QItem_Handle_MsgID);
1221                 RegisterQItemHandler(HKEY("envelope_from"),     QItem_Handle_EnvelopeFrom);
1222                 RegisterQItemHandler(HKEY("retry"),             QItem_Handle_retry);
1223                 RegisterQItemHandler(HKEY("attempted"),         QItem_Handle_Attempted);
1224                 RegisterQItemHandler(HKEY("remote"),            QItem_Handle_Recipient);
1225                 RegisterQItemHandler(HKEY("bounceto"),          QItem_Handle_BounceTo);
1226                 RegisterQItemHandler(HKEY("source_room"),       QItem_Handle_SenderRoom);
1227                 RegisterQItemHandler(HKEY("submitted"),         QItem_Handle_Submitted);
1228
1229                 smtp_init_spoolout();
1230
1231                 CtdlRegisterEVCleanupHook(smtp_evq_cleanup);
1232
1233                 CtdlRegisterProtoHook(cmd_smtp, "SMTP", "SMTP utility commands");
1234                 CtdlRegisterSessionHook(smtp_do_queue, EVT_TIMER, PRIO_SEND + 10);
1235         }
1236
1237         /* return our Subversion id for the Log */
1238         return "smtpeventclient";
1239 }