citadel/serv_smtp.c

   1 /* $Id$ */
   2
   3 #include "sysdep.h"
   4 #include <stdlib.h>
   5 #include <unistd.h>
   6 #include <stdio.h>
   7 #include <fcntl.h>
   8 #include <signal.h>
   9 #include <pwd.h>
  10 #include <errno.h>
  11 #include <sys/types.h>
  12 #include <sys/time.h>
  13 #include <sys/wait.h>
  14 #include <string.h>
  15 #include <limits.h>
  16 #include "citadel.h"
  17 #include "server.h"
  18 #include <time.h>
  19 #include "sysdep_decls.h"
  20 #include "citserver.h"
  21 #include "support.h"
  22 #include "config.h"
  23 #include "dynloader.h"
  24 #include "room_ops.h"
  25 #include "user_ops.h"
  26 #include "policy.h"
  27 #include "database.h"
  28 #include "msgbase.h"
  29 #include "tools.h"
  30 #include "internet_addressing.h"
  31 #include "genstamp.h"
  32
  33
  34 struct citsmtp {                /* Information about the current session */
  35         int command_state;
  36         struct usersupp vrfy_buffer;
  37         int vrfy_count;
  38         char vrfy_match[256];
  39         char from[256];
  40         int number_of_recipients;
  41         int delivery_mode;
  42 };
  43
  44 enum {                          /* Command states for login authentication */
  45         smtp_command,
  46         smtp_user,
  47         smtp_password
  48 };
  49
  50 enum {                          /* Delivery modes */
  51         smtp_deliver_local,
  52         smtp_deliver_remote
  53 };
  54
  55 #define SMTP            ((struct citsmtp *)CtdlGetUserData(SYM_SMTP))
  56 #define SMTP_RECP       ((char *)CtdlGetUserData(SYM_SMTP_RECP))
  57
  58 long SYM_SMTP;
  59 long SYM_SMTP_RECP;
  60
  61
  62
  63 /*****************************************************************************/
  64 /*                      SMTP SERVER (INBOUND) STUFF                          */
  65 /*****************************************************************************/
  66
  67
  68 /*
  69  * Here's where our SMTP session begins its happy day.
  70  */
  71 void smtp_greeting(void) {
  72
  73         strcpy(CC->cs_clientname, "SMTP session");
  74         CC->internal_pgm = 1;
  75         CC->cs_flags |= CS_STEALTH;
  76         CtdlAllocUserData(SYM_SMTP, sizeof(struct citsmtp));
  77         CtdlAllocUserData(SYM_SMTP_RECP, 256);
  78         sprintf(SMTP_RECP, "%s", "");
  79
  80         cprintf("220 Welcome to the Citadel/UX ESMTP server at %s\r\n",
  81                 config.c_fqdn);
  82 }
  83
  84
  85 /*
  86  * Implement HELO and EHLO commands.
  87  */
  88 void smtp_hello(char *argbuf, int is_esmtp) {
  89
  90         if (!is_esmtp) {
  91                 cprintf("250 Greetings and joyous salutations.\r\n");
  92         }
  93         else {
  94                 cprintf("250-Greetings and joyous salutations.\r\n");
  95                 cprintf("250-HELP\r\n");
  96                 cprintf("250-SIZE %ld\r\n", config.c_maxmsglen);
  97                 cprintf("250 AUTH=LOGIN\r\n");
  98         }
  99 }
 100
 101
 102 /*
 103  * Implement HELP command.
 104  */
 105 void smtp_help(void) {
 106         cprintf("214-Here's the frequency, Kenneth:\r\n");
 107         cprintf("214-    DATA\r\n");
 108         cprintf("214-    EHLO\r\n");
 109         cprintf("214-    EXPN\r\n");
 110         cprintf("214-    HELO\r\n");
 111         cprintf("214-    HELP\r\n");
 112         cprintf("214-    MAIL\r\n");
 113         cprintf("214-    NOOP\r\n");
 114         cprintf("214-    QUIT\r\n");
 115         cprintf("214-    RCPT\r\n");
 116         cprintf("214-    RSET\r\n");
 117         cprintf("214-    VRFY\r\n");
 118         cprintf("214 I could tell you more, but then I'd have to kill you.\r\n");
 119 }
 120
 121
 122 /*
 123  *
 124  */
 125 void smtp_get_user(char *argbuf) {
 126         char buf[256];
 127         char username[256];
 128
 129         decode_base64(username, argbuf);
 130         lprintf(9, "Trying <%s>\n", username);
 131         if (CtdlLoginExistingUser(username) == login_ok) {
 132                 encode_base64(buf, "Password:");
 133                 cprintf("334 %s\r\n", buf);
 134                 SMTP->command_state = smtp_password;
 135         }
 136         else {
 137                 cprintf("500 No such user.\r\n");
 138                 SMTP->command_state = smtp_command;
 139         }
 140 }
 141
 142
 143 /*
 144  *
 145  */
 146 void smtp_get_pass(char *argbuf) {
 147         char password[256];
 148
 149         decode_base64(password, argbuf);
 150         lprintf(9, "Trying <%s>\n", password);
 151         if (CtdlTryPassword(password) == pass_ok) {
 152                 cprintf("235 Authentication successful.\r\n");
 153                 lprintf(9, "SMTP authenticated login successful\n");
 154                 CC->internal_pgm = 0;
 155                 CC->cs_flags &= ~CS_STEALTH;
 156         }
 157         else {
 158                 cprintf("500 Authentication failed.\r\n");
 159         }
 160         SMTP->command_state = smtp_command;
 161 }
 162
 163
 164 /*
 165  *
 166  */
 167 void smtp_auth(char *argbuf) {
 168         char buf[256];
 169
 170         if (strncasecmp(argbuf, "login", 5) ) {
 171                 cprintf("550 We only support LOGIN authentication.\r\n");
 172                 return;
 173         }
 174
 175         if (strlen(argbuf) >= 7) {
 176                 smtp_get_user(&argbuf[6]);
 177         }
 178
 179         else {
 180                 encode_base64(buf, "Username:");
 181                 cprintf("334 %s\r\n", buf);
 182                 SMTP->command_state = smtp_user;
 183         }
 184 }
 185
 186
 187 /*
 188  * Back end for smtp_vrfy() command
 189  */
 190 void smtp_vrfy_backend(struct usersupp *us, void *data) {
 191
 192         if (!fuzzy_match(us, SMTP->vrfy_match)) {
 193                 ++SMTP->vrfy_count;
 194                 memcpy(&SMTP->vrfy_buffer, us, sizeof(struct usersupp));
 195         }
 196 }
 197
 198
 199 /*
 200  * Implements the VRFY (verify user name) command.
 201  * Performs fuzzy match on full user names.
 202  */
 203 void smtp_vrfy(char *argbuf) {
 204         SMTP->vrfy_count = 0;
 205         strcpy(SMTP->vrfy_match, argbuf);
 206         ForEachUser(smtp_vrfy_backend, NULL);
 207
 208         if (SMTP->vrfy_count < 1) {
 209                 cprintf("550 String does not match anything.\r\n");
 210         }
 211         else if (SMTP->vrfy_count == 1) {
 212                 cprintf("250 %s <cit%ld@%s>\r\n",
 213                         SMTP->vrfy_buffer.fullname,
 214                         SMTP->vrfy_buffer.usernum,
 215                         config.c_fqdn);
 216         }
 217         else if (SMTP->vrfy_count > 1) {
 218                 cprintf("553 Request ambiguous: %d users matched.\r\n",
 219                         SMTP->vrfy_count);
 220         }
 221
 222 }
 223
 224
 225
 226 /*
 227  * Back end for smtp_expn() command
 228  */
 229 void smtp_expn_backend(struct usersupp *us, void *data) {
 230
 231         if (!fuzzy_match(us, SMTP->vrfy_match)) {
 232
 233                 if (SMTP->vrfy_count >= 1) {
 234                         cprintf("250-%s <cit%ld@%s>\r\n",
 235                                 SMTP->vrfy_buffer.fullname,
 236                                 SMTP->vrfy_buffer.usernum,
 237                                 config.c_fqdn);
 238                 }
 239
 240                 ++SMTP->vrfy_count;
 241                 memcpy(&SMTP->vrfy_buffer, us, sizeof(struct usersupp));
 242         }
 243 }
 244
 245
 246 /*
 247  * Implements the EXPN (expand user name) command.
 248  * Performs fuzzy match on full user names.
 249  */
 250 void smtp_expn(char *argbuf) {
 251         SMTP->vrfy_count = 0;
 252         strcpy(SMTP->vrfy_match, argbuf);
 253         ForEachUser(smtp_expn_backend, NULL);
 254
 255         if (SMTP->vrfy_count < 1) {
 256                 cprintf("550 String does not match anything.\r\n");
 257         }
 258         else if (SMTP->vrfy_count >= 1) {
 259                 cprintf("250 %s <cit%ld@%s>\r\n",
 260                         SMTP->vrfy_buffer.fullname,
 261                         SMTP->vrfy_buffer.usernum,
 262                         config.c_fqdn);
 263         }
 264 }
 265
 266
 267 /*
 268  * Implements the RSET (reset state) command.
 269  * Currently this just zeroes out the state buffer.  If pointers to data
 270  * allocated with mallok() are ever placed in the state buffer, we have to
 271  * be sure to phree() them first!
 272  */
 273 void smtp_rset(void) {
 274         memset(SMTP, 0, sizeof(struct citsmtp));
 275         if (CC->logged_in) logout(CC);
 276         cprintf("250 Zap!\r\n");
 277 }
 278
 279
 280
 281 /*
 282  * Implements the "MAIL From:" command
 283  */
 284 void smtp_mail(char *argbuf) {
 285         char user[256];
 286         char node[256];
 287         int cvt;
 288
 289         if (strlen(SMTP->from) != 0) {
 290                 cprintf("503 Only one sender permitted\r\n");
 291                 return;
 292         }
 293
 294         if (strncasecmp(argbuf, "From:", 5)) {
 295                 cprintf("501 Syntax error\r\n");
 296                 return;
 297         }
 298
 299         strcpy(SMTP->from, &argbuf[5]);
 300         striplt(SMTP->from);
 301
 302         if (strlen(SMTP->from) == 0) {
 303                 cprintf("501 Empty sender name is not permitted\r\n");
 304                 return;
 305         }
 306
 307
 308         /* If this SMTP connection is from a logged-in user, make sure that
 309          * the user only sends email from his/her own address.
 310          */
 311         if (CC->logged_in) {
 312                 cvt = convert_internet_address(user, node, SMTP->from);
 313                 lprintf(9, "cvt=%d, citaddr=<%s@%s>\n", cvt, user, node);
 314                 if ( (cvt != 0) || (strcasecmp(user, CC->usersupp.fullname))) {
 315                         cprintf("550 <%s> is not your address.\r\n", SMTP->from);
 316                         strcpy(SMTP->from, "");
 317                         return;
 318                 }
 319         }
 320
 321         /* Otherwise, make sure outsiders aren't trying to forge mail from
 322          * this system.
 323          */
 324         else {
 325                 cvt = convert_internet_address(user, node, SMTP->from);
 326                 lprintf(9, "cvt=%d, citaddr=<%s@%s>\n", cvt, user, node);
 327                 if (!strcasecmp(node, config.c_nodename)) { /* FIX use fcn */
 328                         cprintf("550 You must log in to send mail from %s\r\n",
 329                                 config.c_fqdn);
 330                         strcpy(SMTP->from, "");
 331                         return;
 332                 }
 333         }
 334
 335         cprintf("250 Sender ok.  Groovy.\r\n");
 336 }
 337
 338
 339
 340 /*
 341  * Implements the "RCPT To:" command
 342  */
 343 void smtp_rcpt(char *argbuf) {
 344         int cvt;
 345         char user[256];
 346         char node[256];
 347         char recp[256];
 348         int is_spam = 0;        /* FIX implement anti-spamming */
 349
 350         if (strlen(SMTP->from) == 0) {
 351                 cprintf("503 MAIL first, then RCPT.  Duh.\r\n");
 352                 return;
 353         }
 354
 355         if (strncasecmp(argbuf, "To:", 3)) {
 356                 cprintf("501 Syntax error\r\n");
 357                 return;
 358         }
 359
 360         strcpy(recp, &argbuf[3]);
 361         striplt(recp);
 362         alias(recp);
 363
 364         cvt = convert_internet_address(user, node, recp);
 365         sprintf(recp, "%s@%s", user, node);
 366
 367
 368         switch(cvt) {
 369                 case rfc822_address_locally_validated:
 370                         cprintf("250 %s is a valid recipient.\r\n", user);
 371                         ++SMTP->number_of_recipients;
 372                         CtdlReallocUserData(SYM_SMTP_RECP,
 373                                 strlen(SMTP_RECP) + 1024 );
 374                         strcat(SMTP_RECP, "local|");
 375                         strcat(SMTP_RECP, user);
 376                         strcat(SMTP_RECP, "|0\n");
 377                         return;
 378
 379                 case rfc822_room_delivery:
 380                         cprintf("250 Delivering to room '%s'\r\n", user);
 381                         ++SMTP->number_of_recipients;
 382                         CtdlReallocUserData(SYM_SMTP_RECP,
 383                                 strlen(SMTP_RECP) + 1024 );
 384                         strcat(SMTP_RECP, "room|");
 385                         strcat(SMTP_RECP, user);
 386                         strcat(SMTP_RECP, "|0|\n");
 387                         return;
 388
 389                 case rfc822_no_such_user:
 390                         cprintf("550 %s: no such user\r\n", recp);
 391                         return;
 392
 393                 case rfc822_address_invalid:
 394                         if (is_spam) {
 395                                 cprintf("551 Away with thee, spammer!\r\n");
 396                         }
 397                         else {
 398                                 cprintf("250 Remote recipient %s ok\r\n", recp);
 399                                 ++SMTP->number_of_recipients;
 400                                 CtdlReallocUserData(SYM_SMTP_RECP,
 401                                         strlen(SMTP_RECP) + 1024 );
 402                                 strcat(SMTP_RECP, "remote|");
 403                                 strcat(SMTP_RECP, recp);
 404                                 strcat(SMTP_RECP, "|0|\n");
 405                                 return;
 406                         }
 407                         return;
 408         }
 409
 410         cprintf("599 Unknown error\r\n");
 411 }
 412
 413
 414
 415
 416
 417 /*
 418  * Back end for smtp_data()  ... this does the actual delivery of the message
 419  * Returns 0 on success, nonzero on failure
 420  */
 421 int smtp_message_delivery(struct CtdlMessage *msg) {
 422         char user[1024];
 423         char node[1024];
 424         char name[1024];
 425         char buf[1024];
 426         char dtype[1024];
 427         char room[1024];
 428         int successful_saves = 0;       /* number of successful local saves */
 429         int failed_saves = 0;           /* number of failed deliveries */
 430         int remote_spools = 0;          /* number of copies to send out */
 431         long msgid = (-1L);
 432         int i;
 433         struct usersupp userbuf;
 434         char *instr;                    /* Remote delivery instructions */
 435         struct CtdlMessage *imsg;
 436
 437         lprintf(9, "smtp_message_delivery() called\n");
 438
 439         /* Fill in 'from' fields with envelope information if missing */
 440         process_rfc822_addr(SMTP->from, user, node, name);
 441         if (msg->cm_fields['A']==NULL) msg->cm_fields['A'] = strdoop(user);
 442         if (msg->cm_fields['N']==NULL) msg->cm_fields['N'] = strdoop(node);
 443         if (msg->cm_fields['H']==NULL) msg->cm_fields['H'] = strdoop(name);
 444
 445         /* Save the message in the queue */
 446         msgid = CtdlSaveMsg(msg,
 447                 "",
 448                 SMTP_SPOOLOUT_ROOM,
 449                 MES_LOCAL,
 450                 1);
 451         ++successful_saves;
 452
 453         instr = mallok(1024);
 454         sprintf(instr, "Content-type: %s\n\nmsgid|%ld\nsubmitted|%ld\n",
 455                 SPOOLMIME, msgid, time(NULL) );
 456
 457         for (i=0; i<SMTP->number_of_recipients; ++i) {
 458                 extract_token(buf, SMTP_RECP, i, '\n');
 459                 extract(dtype, buf, 0);
 460
 461                 /* Stuff local mailboxes */
 462                 if (!strcasecmp(dtype, "local")) {
 463                         extract(user, buf, 1);
 464                         if (getuser(&userbuf, user) == 0) {
 465                                 MailboxName(room, &userbuf, MAILROOM);
 466                                 CtdlSaveMsgPointerInRoom(room, msgid, 0);
 467                                 ++successful_saves;
 468                         }
 469                         else {
 470                                 ++failed_saves;
 471                         }
 472                 }
 473
 474                 /* Delivery to local non-mailbox rooms */
 475                 if (!strcasecmp(dtype, "room")) {
 476                         extract(room, buf, 1);
 477                         CtdlSaveMsgPointerInRoom(room, msgid, 0);
 478                         ++successful_saves;
 479                 }
 480
 481                 /* Remote delivery */
 482                 if (!strcasecmp(dtype, "remote")) {
 483                         extract(user, buf, 1);
 484                         instr = reallok(instr, strlen(instr) + 1024);
 485                         sprintf(&instr[strlen(instr)],
 486                                 "remote|%s|0\n",
 487                                 user);
 488                         ++remote_spools;
 489                 }
 490
 491         }
 492
 493         /* If there are remote spools to be done, save the instructions */
 494         if (remote_spools > 0) {
 495                 imsg = mallok(sizeof(struct CtdlMessage));
 496                 memset(imsg, 0, sizeof(struct CtdlMessage));
 497                 imsg->cm_magic = CTDLMESSAGE_MAGIC;
 498                 imsg->cm_anon_type = MES_NORMAL;
 499                 imsg->cm_format_type = FMT_RFC822;
 500                 imsg->cm_fields['M'] = instr;
 501                 CtdlSaveMsg(imsg, "", SMTP_SPOOLOUT_ROOM, MES_LOCAL, 1);
 502                 CtdlFreeMessage(imsg);
 503         }
 504
 505         /* If there are no remote spools, delete the message */
 506         else {
 507                 phree(instr);   /* only needed here, because CtdlSaveMsg()
 508                                  * would free this buffer otherwise */
 509                 CtdlDeleteMessages(SMTP_SPOOLOUT_ROOM, msgid, NULL);
 510         }
 511
 512         return(failed_saves);
 513 }
 514
 515
 516
 517 /*
 518  * Implements the DATA command
 519  */
 520 void smtp_data(void) {
 521         char *body;
 522         struct CtdlMessage *msg;
 523         int retval;
 524         char nowstamp[256];
 525
 526         if (strlen(SMTP->from) == 0) {
 527                 cprintf("503 Need MAIL command first.\r\n");
 528                 return;
 529         }
 530
 531         if (SMTP->number_of_recipients < 1) {
 532                 cprintf("503 Need RCPT command first.\r\n");
 533                 return;
 534         }
 535
 536         cprintf("354 Transmit message now; terminate with '.' by itself\r\n");
 537
 538         generate_rfc822_datestamp(nowstamp, time(NULL));
 539         body = mallok(4096);
 540         if (body != NULL) sprintf(body,
 541                 "Received: from %s\n"
 542                 "       by %s;\n"
 543                 "       %s\n",
 544                         "FIX.FIX.com",
 545                         config.c_fqdn,
 546                         nowstamp);
 547
 548         body = CtdlReadMessageBody(".", config.c_maxmsglen, body);
 549         if (body == NULL) {
 550                 cprintf("550 Unable to save message text: internal error.\r\n");
 551                 return;
 552         }
 553
 554         lprintf(9, "Converting message...\n");
 555         msg = convert_internet_message(body);
 556
 557         /* If the user is locally authenticated, FORCE the From: header to
 558          * show up as the real sender
 559          */
 560         if (CC->logged_in) {
 561                 if (msg->cm_fields['A'] != NULL) phree(msg->cm_fields['A']);
 562                 if (msg->cm_fields['N'] != NULL) phree(msg->cm_fields['N']);
 563                 if (msg->cm_fields['H'] != NULL) phree(msg->cm_fields['H']);
 564                 msg->cm_fields['A'] = strdoop(CC->usersupp.fullname);
 565                 msg->cm_fields['N'] = strdoop(config.c_nodename);
 566                 msg->cm_fields['H'] = strdoop(config.c_humannode);
 567         }
 568
 569         retval = smtp_message_delivery(msg);
 570         CtdlFreeMessage(msg);
 571
 572         if (!retval) {
 573                 cprintf("250 Message accepted for delivery.\r\n");
 574         }
 575         else {
 576                 cprintf("550 Internal delivery errors: %d\r\n", retval);
 577         }
 578 }
 579
 580
 581
 582
 583 /*
 584  * Main command loop for SMTP sessions.
 585  */
 586 void smtp_command_loop(void) {
 587         char cmdbuf[256];
 588
 589         time(&CC->lastcmd);
 590         memset(cmdbuf, 0, sizeof cmdbuf); /* Clear it, just in case */
 591         if (client_gets(cmdbuf) < 1) {
 592                 lprintf(3, "SMTP socket is broken.  Ending session.\n");
 593                 CC->kill_me = 1;
 594                 return;
 595         }
 596         lprintf(5, "citserver[%3d]: %s\n", CC->cs_pid, cmdbuf);
 597         while (strlen(cmdbuf) < 5) strcat(cmdbuf, " ");
 598
 599         if (SMTP->command_state == smtp_user) {
 600                 smtp_get_user(cmdbuf);
 601         }
 602
 603         else if (SMTP->command_state == smtp_password) {
 604                 smtp_get_pass(cmdbuf);
 605         }
 606
 607         else if (!strncasecmp(cmdbuf, "AUTH", 4)) {
 608                 smtp_auth(&cmdbuf[5]);
 609         }
 610
 611         else if (!strncasecmp(cmdbuf, "DATA", 4)) {
 612                 smtp_data();
 613         }
 614
 615         else if (!strncasecmp(cmdbuf, "EHLO", 4)) {
 616                 smtp_hello(&cmdbuf[5], 1);
 617         }
 618
 619         else if (!strncasecmp(cmdbuf, "EXPN", 4)) {
 620                 smtp_expn(&cmdbuf[5]);
 621         }
 622
 623         else if (!strncasecmp(cmdbuf, "HELO", 4)) {
 624                 smtp_hello(&cmdbuf[5], 0);
 625         }
 626
 627         else if (!strncasecmp(cmdbuf, "HELP", 4)) {
 628                 smtp_help();
 629         }
 630
 631         else if (!strncasecmp(cmdbuf, "MAIL", 4)) {
 632                 smtp_mail(&cmdbuf[5]);
 633         }
 634
 635         else if (!strncasecmp(cmdbuf, "NOOP", 4)) {
 636                 cprintf("250 This command successfully did nothing.\r\n");
 637         }
 638
 639         else if (!strncasecmp(cmdbuf, "QUIT", 4)) {
 640                 cprintf("221 Goodbye...\r\n");
 641                 CC->kill_me = 1;
 642                 return;
 643                 }
 644
 645         else if (!strncasecmp(cmdbuf, "RCPT", 4)) {
 646                 smtp_rcpt(&cmdbuf[5]);
 647         }
 648
 649         else if (!strncasecmp(cmdbuf, "RSET", 4)) {
 650                 smtp_rset();
 651         }
 652
 653         else if (!strncasecmp(cmdbuf, "VRFY", 4)) {
 654                 smtp_vrfy(&cmdbuf[5]);
 655         }
 656
 657         else {
 658                 cprintf("502 I'm sorry Dave, I'm afraid I can't do that.\r\n");
 659         }
 660
 661 }
 662
 663
 664
 665
 666 /*****************************************************************************/
 667 /*               SMTP CLIENT (OUTBOUND PROCESSING) STUFF                     */
 668 /*****************************************************************************/
 669
 670
 671
 672 /*
 673  * smtp_try()
 674  *
 675  * Called by smtp_do_procmsg() to attempt delivery to one SMTP host
 676  *
 677  */
 678 void smtp_try(char *key, char *addr, int *status, char *dsn) {
 679
 680         *status = 3;
 681         strcpy(dsn, "smtp_try() is not finished yet");
 682 }
 683
 684
 685
 686 /*
 687  * smtp_do_procmsg()
 688  *
 689  * Called by smtp_do_queue() to handle an individual message.
 690  */
 691 void smtp_do_procmsg(long msgnum) {
 692         struct CtdlMessage *msg;
 693         char *instr = NULL;
 694         char *results = NULL;
 695         int i;
 696         int lines;
 697         int status;
 698         char buf[1024];
 699         char key[1024];
 700         char addr[1024];
 701         char dsn[1024];
 702         long text_msgid = (-1);
 703
 704         msg = CtdlFetchMessage(msgnum);
 705         if (msg == NULL) {
 706                 lprintf(3, "SMTP: tried %ld but no such message!\n", msgnum);
 707                 return;
 708         }
 709
 710         instr = strdoop(msg->cm_fields['M']);
 711         CtdlFreeMessage(msg);
 712
 713         /* Strip out the headers amd any other non-instruction line */
 714         lines = num_tokens(instr, '\n');
 715         for (i=0; i<lines; ++i) {
 716                 extract_token(buf, instr, i, '\n');
 717                 if (num_tokens(buf, '|') < 2) {
 718                         lprintf(9, "removing <%s>\n", buf);
 719                         remove_token(instr, i, '|');
 720                         --lines;
 721                         --i;
 722                 }
 723         }
 724
 725         /* Learn the message ID */
 726         lines = num_tokens(instr, '\n');
 727         for (i=0; i<lines; ++i) {
 728                 extract_token(buf, instr, i, '\n');
 729                 extract(key, buf, 0);
 730                 if (!strcasecmp(key, "msgid")) {
 731                         text_msgid = extract_long(buf, 1);
 732                 }
 733         }
 734
 735         if (text_msgid < 0L) {
 736                 lprintf(3, "SMTP: no 'msgid' directive found!\n", msgnum);
 737                 phree(instr);
 738                 return;
 739         }
 740
 741         /* Plow through the instructions looking for 'remote' directives and
 742          * a status of 0 (no delivery yet attempted) or 3 (transient errors
 743          * were experienced and it's time to try again)
 744          */
 745         lines = num_tokens(instr, '\n');
 746         for (i=0; i<lines; ++i) {
 747                 extract_token(buf, instr, i, '\n');
 748                 extract(key, buf, 0);
 749                 extract(addr, buf, 1);
 750                 status = extract_int(buf, 2);
 751                 extract(dsn, buf, 3);
 752                 if ( (!strcasecmp(key, "remote"))
 753                    && ((status==0)||(status==3)) ) {
 754                         remove_token(instr, i, '\n');
 755                         --i;
 756                         --lines;
 757                         lprintf(9, "SMTP: Trying <%s>\n", addr);
 758                         smtp_try(key, addr, &status, dsn);
 759                         if (status != 2) {
 760                                 if (results == NULL) {
 761                                         results = mallok(1024);
 762                                         memset(results, 0, 1024);
 763                                 }
 764                                 else {
 765                                         results = reallok(results,
 766                                                 strlen(results) + 1024);
 767                                 }
 768                                 sprintf(&results[strlen(results)],
 769                                         "%s|%s|%d|%s\n",
 770                                         key, addr, status, dsn);
 771                         }
 772                 }
 773         }
 774
 775         if (results != NULL) {
 776                 instr = reallok(instr, strlen(instr) + strlen(results) + 2);
 777                 strcat(instr, results);
 778                 phree(results);
 779         }
 780
 781         /* Delete the instructions and replace with the updated ones */
 782         CtdlDeleteMessages(SMTP_SPOOLOUT_ROOM, msgnum, NULL);
 783         msg = mallok(sizeof(struct CtdlMessage));
 784         memset(msg, 0, sizeof(struct CtdlMessage));
 785         msg->cm_magic = CTDLMESSAGE_MAGIC;
 786         msg->cm_anon_type = MES_NORMAL;
 787         msg->cm_format_type = FMT_RFC822;
 788         msg->cm_fields['M'] = instr;
 789         CtdlSaveMsg(msg, "", SMTP_SPOOLOUT_ROOM, MES_LOCAL, 1);
 790         CtdlFreeMessage(msg);
 791 }
 792
 793
 794
 795 /*
 796  * smtp_do_queue()
 797  *
 798  * Run through the queue sending out messages.
 799  */
 800 void smtp_do_queue(void) {
 801         lprintf(5, "SMTP: processing outbound queue\n");
 802
 803         if (getroom(&CC->quickroom, SMTP_SPOOLOUT_ROOM) != 0) {
 804                 lprintf(3, "Cannot find room <%s>\n", SMTP_SPOOLOUT_ROOM);
 805                 return;
 806         }
 807         CtdlForEachMessage(MSGS_ALL, 0L, SPOOLMIME, NULL, smtp_do_procmsg);
 808
 809         lprintf(5, "SMTP: queue run completed\n");
 810 }
 811
 812
 813 /**** FIX  temporary hack to run the queue *****/
 814 void cmd_qqqq(char *argbuf) {
 815         smtp_do_queue();
 816         cprintf("%d ok\n", OK);
 817 }
 818
 819
 820
 821 /*****************************************************************************/
 822 /*                      MODULE INITIALIZATION STUFF                          */
 823 /*****************************************************************************/
 824
 825
 826 char *Dynamic_Module_Init(void)
 827 {
 828         SYM_SMTP = CtdlGetDynamicSymbol();
 829         SYM_SMTP_RECP = CtdlGetDynamicSymbol();
 830         CtdlRegisterServiceHook(SMTP_PORT,
 831                                 smtp_greeting,
 832                                 smtp_command_loop);
 833
 834         /****  FIX ... temporary hack to run the queue ******/
 835         CtdlRegisterProtoHook(cmd_qqqq, "QQQQ", "run the queue");
 836
 837         create_room(SMTP_SPOOLOUT_ROOM, 3, "", 0);
 838         return "$Id$";
 839 }
 840