citadel/msgbase.c

   1 /*
   2  * $Id$
   3  *
   4  * Implements the message store.
   5  *
   6  */
   7
   8 #include "sysdep.h"
   9 #include <stdlib.h>
  10 #include <unistd.h>
  11 #include <stdio.h>
  12 #include <fcntl.h>
  13
  14 #if TIME_WITH_SYS_TIME
  15 # include <sys/time.h>
  16 # include <time.h>
  17 #else
  18 # if HAVE_SYS_TIME_H
  19 #  include <sys/time.h>
  20 # else
  21 #  include <time.h>
  22 # endif
  23 #endif
  24
  25
  26 #include <ctype.h>
  27 #include <string.h>
  28 #include <limits.h>
  29 #include <errno.h>
  30 #include <stdarg.h>
  31 #include <sys/stat.h>
  32 #include <sys/types.h>
  33 #include <regex.h>
  34 #include <libcitadel.h>
  35 #include "citadel.h"
  36 #include "server.h"
  37 #include "serv_extensions.h"
  38 #include "database.h"
  39 #include "msgbase.h"
  40 #include "support.h"
  41 #include "sysdep_decls.h"
  42 #include "citserver.h"
  43 #include "room_ops.h"
  44 #include "user_ops.h"
  45 #include "file_ops.h"
  46 #include "config.h"
  47 #include "control.h"
  48 #include "genstamp.h"
  49 #include "internet_addressing.h"
  50 #include "euidindex.h"
  51 #include "journaling.h"
  52 #include "citadel_dirs.h"
  53 #include "clientsocket.h"
  54 #include "serv_network.h"
  55 #include "threads.h"
  56
  57 #include "ctdl_module.h"
  58
  59 long config_msgnum;
  60 struct addresses_to_be_filed *atbf = NULL;
  61
  62 /* This temp file holds the queue of operations for AdjRefCount() */
  63 static FILE *arcfp = NULL;
  64
  65 /*
  66  * This really belongs in serv_network.c, but I don't know how to export
  67  * symbols between modules.
  68  */
  69 struct FilterList *filterlist = NULL;
  70
  71
  72 /*
  73  * These are the four-character field headers we use when outputting
  74  * messages in Citadel format (as opposed to RFC822 format).
  75  */
  76 char *msgkeys[] = {
  77         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  78         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  79         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  80         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  81         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  82         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  83         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  84         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  85         NULL,
  86         "from",
  87         NULL, NULL, NULL,
  88         "exti",
  89         "rfca",
  90         NULL,
  91         "hnod",
  92         "msgn",
  93         "jrnl",
  94         NULL,
  95         "list",
  96         "text",
  97         "node",
  98         "room",
  99         "path",
 100         NULL,
 101         "rcpt",
 102         "spec",
 103         "time",
 104         "subj",
 105         NULL,
 106         "wefw",
 107         NULL,
 108         "cccc",
 109         NULL
 110 };
 111
 112 /*
 113  * This function is self explanatory.
 114  * (What can I say, I'm in a weird mood today...)
 115  */
 116 void remove_any_whitespace_to_the_left_or_right_of_at_symbol(char *name)
 117 {
 118         int i;
 119
 120         for (i = 0; i < strlen(name); ++i) {
 121                 if (name[i] == '@') {
 122                         while (isspace(name[i - 1]) && i > 0) {
 123                                 strcpy(&name[i - 1], &name[i]);
 124                                 --i;
 125                         }
 126                         while (isspace(name[i + 1])) {
 127                                 strcpy(&name[i + 1], &name[i + 2]);
 128                         }
 129                 }
 130         }
 131 }
 132
 133
 134 /*
 135  * Aliasing for network mail.
 136  * (Error messages have been commented out, because this is a server.)
 137  */
 138 int alias(char *name)
 139 {                               /* process alias and routing info for mail */
 140         FILE *fp;
 141         int a, i;
 142         char aaa[SIZ], bbb[SIZ];
 143         char *ignetcfg = NULL;
 144         char *ignetmap = NULL;
 145         int at = 0;
 146         char node[64];
 147         char testnode[64];
 148         char buf[SIZ];
 149
 150         char original_name[256];
 151         safestrncpy(original_name, name, sizeof original_name);
 152
 153         striplt(name);
 154         remove_any_whitespace_to_the_left_or_right_of_at_symbol(name);
 155         stripallbut(name, '<', '>');
 156
 157         fp = fopen(file_mail_aliases, "r");
 158         if (fp == NULL) {
 159                 fp = fopen("/dev/null", "r");
 160         }
 161         if (fp == NULL) {
 162                 return (MES_ERROR);
 163         }
 164         strcpy(aaa, "");
 165         strcpy(bbb, "");
 166         while (fgets(aaa, sizeof aaa, fp) != NULL) {
 167                 while (isspace(name[0]))
 168                         strcpy(name, &name[1]);
 169                 aaa[strlen(aaa) - 1] = 0;
 170                 strcpy(bbb, "");
 171                 for (a = 0; a < strlen(aaa); ++a) {
 172                         if (aaa[a] == ',') {
 173                                 strcpy(bbb, &aaa[a + 1]);
 174                                 aaa[a] = 0;
 175                         }
 176                 }
 177                 if (!strcasecmp(name, aaa))
 178                         strcpy(name, bbb);
 179         }
 180         fclose(fp);
 181
 182         /* Hit the Global Address Book */
 183         if (CtdlDirectoryLookup(aaa, name, sizeof aaa) == 0) {
 184                 strcpy(name, aaa);
 185         }
 186
 187         if (strcasecmp(original_name, name)) {
 188                 CtdlLogPrintf(CTDL_INFO, "%s is being forwarded to %s\n", original_name, name);
 189         }
 190
 191         /* Change "user @ xxx" to "user" if xxx is an alias for this host */
 192         for (a=0; a<strlen(name); ++a) {
 193                 if (name[a] == '@') {
 194                         if (CtdlHostAlias(&name[a+1]) == hostalias_localhost) {
 195                                 name[a] = 0;
 196                                 CtdlLogPrintf(CTDL_INFO, "Changed to <%s>\n", name);
 197                         }
 198                 }
 199         }
 200
 201         /* determine local or remote type, see citadel.h */
 202         at = haschar(name, '@');
 203         if (at == 0) return(MES_LOCAL);         /* no @'s - local address */
 204         if (at > 1) return(MES_ERROR);          /* >1 @'s - invalid address */
 205         remove_any_whitespace_to_the_left_or_right_of_at_symbol(name);
 206
 207         /* figure out the delivery mode */
 208         extract_token(node, name, 1, '@', sizeof node);
 209
 210         /* If there are one or more dots in the nodename, we assume that it
 211          * is an FQDN and will attempt SMTP delivery to the Internet.
 212          */
 213         if (haschar(node, '.') > 0) {
 214                 return(MES_INTERNET);
 215         }
 216
 217         /* Otherwise we look in the IGnet maps for a valid Citadel node.
 218          * Try directly-connected nodes first...
 219          */
 220         ignetcfg = CtdlGetSysConfig(IGNETCFG);
 221         for (i=0; i<num_tokens(ignetcfg, '\n'); ++i) {
 222                 extract_token(buf, ignetcfg, i, '\n', sizeof buf);
 223                 extract_token(testnode, buf, 0, '|', sizeof testnode);
 224                 if (!strcasecmp(node, testnode)) {
 225                         free(ignetcfg);
 226                         return(MES_IGNET);
 227                 }
 228         }
 229         free(ignetcfg);
 230
 231         /*
 232          * Then try nodes that are two or more hops away.
 233          */
 234         ignetmap = CtdlGetSysConfig(IGNETMAP);
 235         for (i=0; i<num_tokens(ignetmap, '\n'); ++i) {
 236                 extract_token(buf, ignetmap, i, '\n', sizeof buf);
 237                 extract_token(testnode, buf, 0, '|', sizeof testnode);
 238                 if (!strcasecmp(node, testnode)) {
 239                         free(ignetmap);
 240                         return(MES_IGNET);
 241                 }
 242         }
 243         free(ignetmap);
 244
 245         /* If we get to this point it's an invalid node name */
 246         return (MES_ERROR);
 247 }
 248
 249
 250 /*
 251  * Back end for the MSGS command: output message number only.
 252  */
 253 void simple_listing(long msgnum, void *userdata)
 254 {
 255         cprintf("%ld\n", msgnum);
 256 }
 257
 258
 259
 260 /*
 261  * Back end for the MSGS command: output header summary.
 262  */
 263 void headers_listing(long msgnum, void *userdata)
 264 {
 265         struct CtdlMessage *msg;
 266
 267         msg = CtdlFetchMessage(msgnum, 0);
 268         if (msg == NULL) {
 269                 cprintf("%ld|0|||||\n", msgnum);
 270                 return;
 271         }
 272
 273         cprintf("%ld|%s|%s|%s|%s|%s|\n",
 274                 msgnum,
 275                 (msg->cm_fields['T'] ? msg->cm_fields['T'] : "0"),
 276                 (msg->cm_fields['A'] ? msg->cm_fields['A'] : ""),
 277                 (msg->cm_fields['N'] ? msg->cm_fields['N'] : ""),
 278                 (msg->cm_fields['F'] ? msg->cm_fields['F'] : ""),
 279                 (msg->cm_fields['U'] ? msg->cm_fields['U'] : "")
 280         );
 281         CtdlFreeMessage(msg);
 282 }
 283
 284
 285
 286 /* Determine if a given message matches the fields in a message template.
 287  * Return 0 for a successful match.
 288  */
 289 int CtdlMsgCmp(struct CtdlMessage *msg, struct CtdlMessage *template) {
 290         int i;
 291
 292         /* If there aren't any fields in the template, all messages will
 293          * match.
 294          */
 295         if (template == NULL) return(0);
 296
 297         /* Null messages are bogus. */
 298         if (msg == NULL) return(1);
 299
 300         for (i='A'; i<='Z'; ++i) {
 301                 if (template->cm_fields[i] != NULL) {
 302                         if (msg->cm_fields[i] == NULL) {
 303                                 /* Considered equal if temmplate is empty string */
 304                                 if (IsEmptyStr(template->cm_fields[i])) continue;
 305                                 return 1;
 306                         }
 307                         if (strcasecmp(msg->cm_fields[i],
 308                                 template->cm_fields[i])) return 1;
 309                 }
 310         }
 311
 312         /* All compares succeeded: we have a match! */
 313         return 0;
 314 }
 315
 316
 317
 318 /*
 319  * Retrieve the "seen" message list for the current room.
 320  */
 321 void CtdlGetSeen(char *buf, int which_set) {
 322         struct visit vbuf;
 323
 324         /* Learn about the user and room in question */
 325         CtdlGetRelationship(&vbuf, &CC->user, &CC->room);
 326
 327         if (which_set == ctdlsetseen_seen)
 328                 safestrncpy(buf, vbuf.v_seen, SIZ);
 329         if (which_set == ctdlsetseen_answered)
 330                 safestrncpy(buf, vbuf.v_answered, SIZ);
 331 }
 332
 333
 334
 335 /*
 336  * Manipulate the "seen msgs" string (or other message set strings)
 337  */
 338 void CtdlSetSeen(long *target_msgnums, int num_target_msgnums,
 339                 int target_setting, int which_set,
 340                 struct ctdluser *which_user, struct ctdlroom *which_room) {
 341         struct cdbdata *cdbfr;
 342         int i, j, k;
 343         int is_seen = 0;
 344         int was_seen = 0;
 345         long lo = (-1L);
 346         long hi = (-1L);
 347         struct visit vbuf;
 348         long *msglist;
 349         int num_msgs = 0;
 350         char vset[SIZ];
 351         char *is_set;   /* actually an array of booleans */
 352         int num_sets;
 353         int s;
 354         int w = 0;
 355         char setstr[SIZ], lostr[SIZ], histr[SIZ];
 356
 357         /* Don't bother doing *anything* if we were passed a list of zero messages */
 358         if (num_target_msgnums < 1) {
 359                 return;
 360         }
 361
 362         /* If no room was specified, we go with the current room. */
 363         if (!which_room) {
 364                 which_room = &CC->room;
 365         }
 366
 367         /* If no user was specified, we go with the current user. */
 368         if (!which_user) {
 369                 which_user = &CC->user;
 370         }
 371
 372         CtdlLogPrintf(CTDL_DEBUG, "CtdlSetSeen(%d msgs starting with %ld, %s, %d) in <%s>\n",
 373                 num_target_msgnums, target_msgnums[0],
 374                 (target_setting ? "SET" : "CLEAR"),
 375                 which_set,
 376                 which_room->QRname);
 377
 378         /* Learn about the user and room in question */
 379         CtdlGetRelationship(&vbuf, which_user, which_room);
 380
 381         /* Load the message list */
 382         cdbfr = cdb_fetch(CDB_MSGLISTS, &which_room->QRnumber, sizeof(long));
 383         if (cdbfr != NULL) {
 384                 msglist = (long *) cdbfr->ptr;
 385                 cdbfr->ptr = NULL;      /* CtdlSetSeen() now owns this memory */
 386                 num_msgs = cdbfr->len / sizeof(long);
 387                 cdb_free(cdbfr);
 388         } else {
 389                 return; /* No messages at all?  No further action. */
 390         }
 391
 392         is_set = malloc(num_msgs * sizeof(char));
 393         memset(is_set, 0, (num_msgs * sizeof(char)) );
 394
 395         /* Decide which message set we're manipulating */
 396         switch(which_set) {
 397                 case ctdlsetseen_seen:
 398                         safestrncpy(vset, vbuf.v_seen, sizeof vset);
 399                         break;
 400                 case ctdlsetseen_answered:
 401                         safestrncpy(vset, vbuf.v_answered, sizeof vset);
 402                         break;
 403         }
 404
 405
 406 #if 0   /* This is a special diagnostic section.  Do not allow it to run during normal operation. */
 407         CtdlLogPrintf(CTDL_DEBUG, "There are %d messages in the room.\n", num_msgs);
 408         for (i=0; i<num_msgs; ++i) {
 409                 if ((i > 0) && (msglist[i] <= msglist[i-1])) abort();
 410         }
 411         CtdlLogPrintf(CTDL_DEBUG, "We are twiddling %d of them.\n", num_target_msgnums);
 412         for (k=0; k<num_target_msgnums; ++k) {
 413                 if ((k > 0) && (target_msgnums[k] <= target_msgnums[k-1])) abort();
 414         }
 415 #endif
 416
 417         CtdlLogPrintf(CTDL_DEBUG, "before update: %s\n", vset);
 418
 419         /* Translate the existing sequence set into an array of booleans */
 420         num_sets = num_tokens(vset, ',');
 421         for (s=0; s<num_sets; ++s) {
 422                 extract_token(setstr, vset, s, ',', sizeof setstr);
 423
 424                 extract_token(lostr, setstr, 0, ':', sizeof lostr);
 425                 if (num_tokens(setstr, ':') >= 2) {
 426                         extract_token(histr, setstr, 1, ':', sizeof histr);
 427                 }
 428                 else {
 429                         strcpy(histr, lostr);
 430                 }
 431                 lo = atol(lostr);
 432                 if (!strcmp(histr, "*")) {
 433                         hi = LONG_MAX;
 434                 }
 435                 else {
 436                         hi = atol(histr);
 437                 }
 438
 439                 for (i = 0; i < num_msgs; ++i) {
 440                         if ((msglist[i] >= lo) && (msglist[i] <= hi)) {
 441                                 is_set[i] = 1;
 442                         }
 443                 }
 444         }
 445
 446
 447         /* Now translate the array of booleans back into a sequence set */
 448         strcpy(vset, "");
 449         was_seen = 0;
 450         lo = (-1);
 451         hi = (-1);
 452
 453         for (i=0; i<num_msgs; ++i) {
 454                 is_seen = is_set[i];
 455
 456                 /* Apply changes */
 457                 for (k=0; k<num_target_msgnums; ++k) {
 458                         if (msglist[i] == target_msgnums[k]) {
 459                                 is_seen = target_setting;
 460                         }
 461                 }
 462
 463                 w = 0;  /* set to 1 if we write something to the string */
 464
 465                 if ((was_seen == 0) && (is_seen == 1)) {
 466                         lo = msglist[i];
 467                 }
 468                 else if ((was_seen == 1) && (is_seen == 0)) {
 469                         hi = msglist[i-1];
 470                         w = 1;
 471
 472                         if (!IsEmptyStr(vset)) {
 473                                 strcat(vset, ",");
 474                         }
 475                         if (lo == hi) {
 476                                 sprintf(&vset[strlen(vset)], "%ld", hi);
 477                         }
 478                         else {
 479                                 sprintf(&vset[strlen(vset)], "%ld:%ld", lo, hi);
 480                         }
 481                 }
 482                 else if ((is_seen) && (i == num_msgs - 1)) {
 483                         w = 1;
 484                         if (!IsEmptyStr(vset)) {
 485                                 strcat(vset, ",");
 486                         }
 487                         if ((i==0) || (was_seen == 0)) {
 488                                 sprintf(&vset[strlen(vset)], "%ld", msglist[i]);
 489                         }
 490                         else {
 491                                 sprintf(&vset[strlen(vset)], "%ld:%ld", lo, msglist[i]);
 492                         }
 493                 }
 494
 495                 /* If the string is getting too long, truncate it at the beginning; repeat up to 9 times */
 496                 if (w) for (j=0; j<9; ++j) {
 497                         if ((strlen(vset) + 20) > sizeof vset) {
 498                                 remove_token(vset, 0, ',');
 499                                 if (which_set == ctdlsetseen_seen) {
 500                                         char temp[SIZ];
 501                                         sprintf(temp, "1:%ld,", atol(vset)-1L);
 502                                         strcat(temp, vset);
 503                                         strcpy(vset, temp);
 504                                 }
 505                         }
 506                 }
 507
 508                 was_seen = is_seen;
 509         }
 510
 511         CtdlLogPrintf(CTDL_DEBUG, " after update: %s\n", vset);
 512
 513         /* Decide which message set we're manipulating */
 514         switch (which_set) {
 515                 case ctdlsetseen_seen:
 516                         safestrncpy(vbuf.v_seen, vset, sizeof vbuf.v_seen);
 517                         break;
 518                 case ctdlsetseen_answered:
 519                         safestrncpy(vbuf.v_answered, vset, sizeof vbuf.v_answered);
 520                         break;
 521         }
 522
 523         free(is_set);
 524         free(msglist);
 525         CtdlSetRelationship(&vbuf, which_user, which_room);
 526 }
 527
 528
 529 /*
 530  * API function to perform an operation for each qualifying message in the
 531  * current room.  (Returns the number of messages processed.)
 532  */
 533 int CtdlForEachMessage(int mode, long ref, char *search_string,
 534                         char *content_type,
 535                         struct CtdlMessage *compare,
 536                         void (*CallBack) (long, void *),
 537                         void *userdata)
 538 {
 539
 540         int a, i, j;
 541         struct visit vbuf;
 542         struct cdbdata *cdbfr;
 543         long *msglist = NULL;
 544         int num_msgs = 0;
 545         int num_processed = 0;
 546         long thismsg;
 547         struct MetaData smi;
 548         struct CtdlMessage *msg = NULL;
 549         int is_seen = 0;
 550         long lastold = 0L;
 551         int printed_lastold = 0;
 552         int num_search_msgs = 0;
 553         long *search_msgs = NULL;
 554         regex_t re;
 555         int need_to_free_re = 0;
 556         regmatch_t pm;
 557
 558         if ((content_type) && (!IsEmptyStr(content_type))) {
 559                 regcomp(&re, content_type, 0);
 560                 need_to_free_re = 1;
 561         }
 562
 563         /* Learn about the user and room in question */
 564         getuser(&CC->user, CC->curr_user);
 565         CtdlGetRelationship(&vbuf, &CC->user, &CC->room);
 566
 567         /* Load the message list */
 568         cdbfr = cdb_fetch(CDB_MSGLISTS, &CC->room.QRnumber, sizeof(long));
 569         if (cdbfr != NULL) {
 570                 msglist = (long *) cdbfr->ptr;
 571                 num_msgs = cdbfr->len / sizeof(long);
 572         } else {
 573                 if (need_to_free_re) regfree(&re);
 574                 return 0;       /* No messages at all?  No further action. */
 575         }
 576
 577
 578         /*
 579          * Now begin the traversal.
 580          */
 581         if (num_msgs > 0) for (a = 0; a < num_msgs; ++a) {
 582
 583                 /* If the caller is looking for a specific MIME type, filter
 584                  * out all messages which are not of the type requested.
 585                  */
 586                 if ((content_type != NULL) && (!IsEmptyStr(content_type))) {
 587
 588                         /* This call to GetMetaData() sits inside this loop
 589                          * so that we only do the extra database read per msg
 590                          * if we need to.  Doing the extra read all the time
 591                          * really kills the server.  If we ever need to use
 592                          * metadata for another search criterion, we need to
 593                          * move the read somewhere else -- but still be smart
 594                          * enough to only do the read if the caller has
 595                          * specified something that will need it.
 596                          */
 597                         GetMetaData(&smi, msglist[a]);
 598
 599                         /* if (strcasecmp(smi.meta_content_type, content_type)) { old non-regex way */
 600                         if (regexec(&re, smi.meta_content_type, 1, &pm, 0) != 0) {
 601                                 msglist[a] = 0L;
 602                         }
 603                 }
 604         }
 605
 606         num_msgs = sort_msglist(msglist, num_msgs);
 607
 608         /* If a template was supplied, filter out the messages which
 609          * don't match.  (This could induce some delays!)
 610          */
 611         if (num_msgs > 0) {
 612                 if (compare != NULL) {
 613                         for (a = 0; a < num_msgs; ++a) {
 614                                 msg = CtdlFetchMessage(msglist[a], 1);
 615                                 if (msg != NULL) {
 616                                         if (CtdlMsgCmp(msg, compare)) {
 617                                                 msglist[a] = 0L;
 618                                         }
 619                                         CtdlFreeMessage(msg);
 620                                 }
 621                         }
 622                 }
 623         }
 624
 625         /* If a search string was specified, get a message list from
 626          * the full text index and remove messages which aren't on both
 627          * lists.
 628          *
 629          * How this works:
 630          * Since the lists are sorted and strictly ascending, and the
 631          * output list is guaranteed to be shorter than or equal to the
 632          * input list, we overwrite the bottom of the input list.  This
 633          * eliminates the need to memmove big chunks of the list over and
 634          * over again.
 635          */
 636         if ( (num_msgs > 0) && (mode == MSGS_SEARCH) && (search_string) ) {
 637
 638                 /* Call search module via hook mechanism.
 639                  * NULL means use any search function available.
 640                  * otherwise replace with a char * to name of search routine
 641                  */
 642                 CtdlModuleDoSearch(&num_search_msgs, &search_msgs, search_string, "fulltext");
 643
 644                 if (num_search_msgs > 0) {
 645
 646                         int orig_num_msgs;
 647
 648                         orig_num_msgs = num_msgs;
 649                         num_msgs = 0;
 650                         for (i=0; i<orig_num_msgs; ++i) {
 651                                 for (j=0; j<num_search_msgs; ++j) {
 652                                         if (msglist[i] == search_msgs[j]) {
 653                                                 msglist[num_msgs++] = msglist[i];
 654                                         }
 655                                 }
 656                         }
 657                 }
 658                 else {
 659                         num_msgs = 0;   /* No messages qualify */
 660                 }
 661                 if (search_msgs != NULL) free(search_msgs);
 662
 663                 /* Now that we've purged messages which don't contain the search
 664                  * string, treat a MSGS_SEARCH just like a MSGS_ALL from this
 665                  * point on.
 666                  */
 667                 mode = MSGS_ALL;
 668         }
 669
 670         /*
 671          * Now iterate through the message list, according to the
 672          * criteria supplied by the caller.
 673          */
 674         if (num_msgs > 0)
 675                 for (a = 0; a < num_msgs; ++a) {
 676                         thismsg = msglist[a];
 677                         if (mode == MSGS_ALL) {
 678                                 is_seen = 0;
 679                         }
 680                         else {
 681                                 is_seen = is_msg_in_sequence_set(
 682                                                         vbuf.v_seen, thismsg);
 683                                 if (is_seen) lastold = thismsg;
 684                         }
 685                         if ((thismsg > 0L)
 686                             && (
 687
 688                                        (mode == MSGS_ALL)
 689                                        || ((mode == MSGS_OLD) && (is_seen))
 690                                        || ((mode == MSGS_NEW) && (!is_seen))
 691                                        || ((mode == MSGS_LAST) && (a >= (num_msgs - ref)))
 692                                    || ((mode == MSGS_FIRST) && (a < ref))
 693                                 || ((mode == MSGS_GT) && (thismsg > ref))
 694                                 || ((mode == MSGS_EQ) && (thismsg == ref))
 695                             )
 696                             ) {
 697                                 if ((mode == MSGS_NEW) && (CC->user.flags & US_LASTOLD) && (lastold > 0L) && (printed_lastold == 0) && (!is_seen)) {
 698                                         if (CallBack)
 699                                                 CallBack(lastold, userdata);
 700                                         printed_lastold = 1;
 701                                         ++num_processed;
 702                                 }
 703                                 if (CallBack) CallBack(thismsg, userdata);
 704                                 ++num_processed;
 705                         }
 706                 }
 707         cdb_free(cdbfr);        /* Clean up */
 708         if (need_to_free_re) regfree(&re);
 709         return num_processed;
 710 }
 711
 712
 713
 714 /*
 715  * cmd_msgs()  -  get list of message #'s in this room
 716  *              implements the MSGS server command using CtdlForEachMessage()
 717  */
 718 void cmd_msgs(char *cmdbuf)
 719 {
 720         int mode = 0;
 721         char which[16];
 722         char buf[256];
 723         char tfield[256];
 724         char tvalue[256];
 725         int cm_ref = 0;
 726         int i;
 727         int with_template = 0;
 728         struct CtdlMessage *template = NULL;
 729         int with_headers = 0;
 730         char search_string[1024];
 731
 732         extract_token(which, cmdbuf, 0, '|', sizeof which);
 733         cm_ref = extract_int(cmdbuf, 1);
 734         extract_token(search_string, cmdbuf, 1, '|', sizeof search_string);
 735         with_template = extract_int(cmdbuf, 2);
 736         with_headers = extract_int(cmdbuf, 3);
 737
 738         strcat(which, "   ");
 739         if (!strncasecmp(which, "OLD", 3))
 740                 mode = MSGS_OLD;
 741         else if (!strncasecmp(which, "NEW", 3))
 742                 mode = MSGS_NEW;
 743         else if (!strncasecmp(which, "FIRST", 5))
 744                 mode = MSGS_FIRST;
 745         else if (!strncasecmp(which, "LAST", 4))
 746                 mode = MSGS_LAST;
 747         else if (!strncasecmp(which, "GT", 2))
 748                 mode = MSGS_GT;
 749         else if (!strncasecmp(which, "SEARCH", 6))
 750                 mode = MSGS_SEARCH;
 751         else
 752                 mode = MSGS_ALL;
 753
 754         if ((!(CC->logged_in)) && (!(CC->internal_pgm))) {
 755                 cprintf("%d not logged in\n", ERROR + NOT_LOGGED_IN);
 756                 return;
 757         }
 758
 759         if ( (mode == MSGS_SEARCH) && (!config.c_enable_fulltext) ) {
 760                 cprintf("%d Full text index is not enabled on this server.\n",
 761                         ERROR + CMD_NOT_SUPPORTED);
 762                 return;
 763         }
 764
 765         if (with_template) {
 766                 unbuffer_output();
 767                 cprintf("%d Send template then receive message list\n",
 768                         START_CHAT_MODE);
 769                 template = (struct CtdlMessage *)
 770                         malloc(sizeof(struct CtdlMessage));
 771                 memset(template, 0, sizeof(struct CtdlMessage));
 772                 template->cm_magic = CTDLMESSAGE_MAGIC;
 773                 template->cm_anon_type = MES_NORMAL;
 774
 775                 while(client_getln(buf, sizeof buf) >= 0 && strcmp(buf,"000")) {
 776                         extract_token(tfield, buf, 0, '|', sizeof tfield);
 777                         extract_token(tvalue, buf, 1, '|', sizeof tvalue);
 778                         for (i='A'; i<='Z'; ++i) if (msgkeys[i]!=NULL) {
 779                                 if (!strcasecmp(tfield, msgkeys[i])) {
 780                                         template->cm_fields[i] =
 781                                                 strdup(tvalue);
 782                                 }
 783                         }
 784                 }
 785                 buffer_output();
 786         }
 787         else {
 788                 cprintf("%d  \n", LISTING_FOLLOWS);
 789         }
 790
 791         CtdlForEachMessage(mode,
 792                         ( (mode == MSGS_SEARCH) ? 0 : cm_ref ),
 793                         ( (mode == MSGS_SEARCH) ? search_string : NULL ),
 794                         NULL,
 795                         template,
 796                         (with_headers ? headers_listing : simple_listing),
 797                         NULL
 798         );
 799         if (template != NULL) CtdlFreeMessage(template);
 800         cprintf("000\n");
 801 }
 802
 803
 804
 805
 806 /*
 807  * help_subst()  -  support routine for help file viewer
 808  */
 809 void help_subst(char *strbuf, char *source, char *dest)
 810 {
 811         char workbuf[SIZ];
 812         int p;
 813
 814         while (p = pattern2(strbuf, source), (p >= 0)) {
 815                 strcpy(workbuf, &strbuf[p + strlen(source)]);
 816                 strcpy(&strbuf[p], dest);
 817                 strcat(strbuf, workbuf);
 818         }
 819 }
 820
 821
 822 void do_help_subst(char *buffer)
 823 {
 824         char buf2[16];
 825
 826         help_subst(buffer, "^nodename", config.c_nodename);
 827         help_subst(buffer, "^humannode", config.c_humannode);
 828         help_subst(buffer, "^fqdn", config.c_fqdn);
 829         help_subst(buffer, "^username", CC->user.fullname);
 830         snprintf(buf2, sizeof buf2, "%ld", CC->user.usernum);
 831         help_subst(buffer, "^usernum", buf2);
 832         help_subst(buffer, "^sysadm", config.c_sysadm);
 833         help_subst(buffer, "^variantname", CITADEL);
 834         snprintf(buf2, sizeof buf2, "%d", config.c_maxsessions);
 835         help_subst(buffer, "^maxsessions", buf2);
 836         help_subst(buffer, "^bbsdir", ctdl_message_dir);
 837 }
 838
 839
 840
 841 /*
 842  * memfmout()  -  Citadel text formatter and paginator.
 843  *           Although the original purpose of this routine was to format
 844  *           text to the reader's screen width, all we're really using it
 845  *           for here is to format text out to 80 columns before sending it
 846  *           to the client.  The client software may reformat it again.
 847  */
 848 void memfmout(
 849         char *mptr,             /* where are we going to get our text from? */
 850         char subst,             /* nonzero if we should do substitutions */
 851         char *nl)               /* string to terminate lines with */
 852 {
 853         int a, b, c;
 854         int real = 0;
 855         int old = 0;
 856         cit_uint8_t ch;
 857         char aaa[140];
 858         char buffer[SIZ];
 859         static int width = 80;
 860
 861         strcpy(aaa, "");
 862         old = 255;
 863         strcpy(buffer, "");
 864         c = 1;                  /* c is the current pos */
 865
 866         do {
 867                 if (subst) {
 868                         while (ch = *mptr, ((ch != 0) && (strlen(buffer) < 126))) {
 869                                 ch = *mptr++;
 870                                 buffer[strlen(buffer) + 1] = 0;
 871                                 buffer[strlen(buffer)] = ch;
 872                         }
 873
 874                         if (buffer[0] == '^')
 875                                 do_help_subst(buffer);
 876
 877                         buffer[strlen(buffer) + 1] = 0;
 878                         a = buffer[0];
 879                         strcpy(buffer, &buffer[1]);
 880                 } else {
 881                         ch = *mptr++;
 882                 }
 883
 884                 old = real;
 885                 real = ch;
 886
 887                 if (((ch == 13) || (ch == 10)) && (old != 13) && (old != 10)) {
 888                         ch = 32;
 889                 }
 890                 if (((old == 13) || (old == 10)) && (isspace(real))) {
 891                         cprintf("%s", nl);
 892                         c = 1;
 893                 }
 894                 if (ch > 32) {
 895                         if (((strlen(aaa) + c) > (width - 5)) && (strlen(aaa) > (width - 5))) {
 896                                 cprintf("%s%s", nl, aaa);
 897                                 c = strlen(aaa);
 898                                 aaa[0] = 0;
 899                         }
 900                         b = strlen(aaa);
 901                         aaa[b] = ch;
 902                         aaa[b + 1] = 0;
 903                 }
 904                 if (ch == 32) {
 905                         if ((strlen(aaa) + c) > (width - 5)) {
 906                                 cprintf("%s", nl);
 907                                 c = 1;
 908                         }
 909                         cprintf("%s ", aaa);
 910                         ++c;
 911                         c = c + strlen(aaa);
 912                         strcpy(aaa, "");
 913                 }
 914                 if ((ch == 13) || (ch == 10)) {
 915                         cprintf("%s%s", aaa, nl);
 916                         c = 1;
 917                         strcpy(aaa, "");
 918                 }
 919
 920         } while (ch > 0);
 921
 922         cprintf("%s%s", aaa, nl);
 923 }
 924
 925
 926
 927 /*
 928  * Callback function for mime parser that simply lists the part
 929  */
 930 void list_this_part(char *name, char *filename, char *partnum, char *disp,
 931                     void *content, char *cbtype, char *cbcharset, size_t length, char *encoding,
 932                     char *cbid, void *cbuserdata)
 933 {
 934         struct ma_info *ma;
 935
 936         ma = (struct ma_info *)cbuserdata;
 937         if (ma->is_ma == 0) {
 938                 cprintf("part=%s|%s|%s|%s|%s|%ld|%s\n",
 939                         name, filename, partnum, disp, cbtype, (long)length, cbid);
 940         }
 941 }
 942
 943 /*
 944  * Callback function for multipart prefix
 945  */
 946 void list_this_pref(char *name, char *filename, char *partnum, char *disp,
 947                     void *content, char *cbtype, char *cbcharset, size_t length, char *encoding,
 948                     char *cbid, void *cbuserdata)
 949 {
 950         struct ma_info *ma;
 951
 952         ma = (struct ma_info *)cbuserdata;
 953         if (!strcasecmp(cbtype, "multipart/alternative")) {
 954                 ++ma->is_ma;
 955         }
 956
 957         if (ma->is_ma == 0) {
 958                 cprintf("pref=%s|%s\n", partnum, cbtype);
 959         }
 960 }
 961
 962 /*
 963  * Callback function for multipart sufffix
 964  */
 965 void list_this_suff(char *name, char *filename, char *partnum, char *disp,
 966                     void *content, char *cbtype, char *cbcharset, size_t length, char *encoding,
 967                     char *cbid, void *cbuserdata)
 968 {
 969         struct ma_info *ma;
 970
 971         ma = (struct ma_info *)cbuserdata;
 972         if (ma->is_ma == 0) {
 973                 cprintf("suff=%s|%s\n", partnum, cbtype);
 974         }
 975         if (!strcasecmp(cbtype, "multipart/alternative")) {
 976                 --ma->is_ma;
 977         }
 978 }
 979
 980
 981 /*
 982  * Callback function for mime parser that opens a section for downloading
 983  */
 984 void mime_download(char *name, char *filename, char *partnum, char *disp,
 985                    void *content, char *cbtype, char *cbcharset, size_t length,
 986                    char *encoding, char *cbid, void *cbuserdata)
 987 {
 988
 989         /* Silently go away if there's already a download open. */
 990         if (CC->download_fp != NULL)
 991                 return;
 992
 993         if (
 994                 (!IsEmptyStr(partnum) && (!strcasecmp(CC->download_desired_section, partnum)))
 995         ||      (!IsEmptyStr(cbid) && (!strcasecmp(CC->download_desired_section, cbid)))
 996         ) {
 997                 CC->download_fp = tmpfile();
 998                 if (CC->download_fp == NULL)
 999                         return;
1000
1001                 fwrite(content, length, 1, CC->download_fp);
1002                 fflush(CC->download_fp);
1003                 rewind(CC->download_fp);
1004
1005                 OpenCmdResult(filename, cbtype);
1006         }
1007 }
1008
1009
1010
1011 /*
1012  * Callback function for mime parser that outputs a section all at once.
1013  * We can specify the desired section by part number *or* content-id.
1014  */
1015 void mime_spew_section(char *name, char *filename, char *partnum, char *disp,
1016                    void *content, char *cbtype, char *cbcharset, size_t length,
1017                    char *encoding, char *cbid, void *cbuserdata)
1018 {
1019         int *found_it = (int *)cbuserdata;
1020
1021         if (
1022                 (!IsEmptyStr(partnum) && (!strcasecmp(CC->download_desired_section, partnum)))
1023         ||      (!IsEmptyStr(cbid) && (!strcasecmp(CC->download_desired_section, cbid)))
1024         ) {
1025                 *found_it = 1;
1026                 cprintf("%d %d|-1|%s|%s\n",
1027                         BINARY_FOLLOWS,
1028                         (int)length,
1029                         filename,
1030                         cbtype
1031                 );
1032                 client_write(content, length);
1033         }
1034 }
1035
1036
1037
1038 /*
1039  * Load a message from disk into memory.
1040  * This is used by CtdlOutputMsg() and other fetch functions.
1041  *
1042  * NOTE: Caller is responsible for freeing the returned CtdlMessage struct
1043  *       using the CtdlMessageFree() function.
1044  */
1045 struct CtdlMessage *CtdlFetchMessage(long msgnum, int with_body)
1046 {
1047         struct cdbdata *dmsgtext;
1048         struct CtdlMessage *ret = NULL;
1049         char *mptr;
1050         char *upper_bound;
1051         cit_uint8_t ch;
1052         cit_uint8_t field_header;
1053
1054         CtdlLogPrintf(CTDL_DEBUG, "CtdlFetchMessage(%ld, %d)\n", msgnum, with_body);
1055
1056         dmsgtext = cdb_fetch(CDB_MSGMAIN, &msgnum, sizeof(long));
1057         if (dmsgtext == NULL) {
1058                 return NULL;
1059         }
1060         mptr = dmsgtext->ptr;
1061         upper_bound = mptr + dmsgtext->len;
1062
1063         /* Parse the three bytes that begin EVERY message on disk.
1064          * The first is always 0xFF, the on-disk magic number.
1065          * The second is the anonymous/public type byte.
1066          * The third is the format type byte (vari, fixed, or MIME).
1067          */
1068         ch = *mptr++;
1069         if (ch != 255) {
1070                 CtdlLogPrintf(CTDL_ERR, "Message %ld appears to be corrupted.\n", msgnum);
1071                 cdb_free(dmsgtext);
1072                 return NULL;
1073         }
1074         ret = (struct CtdlMessage *) malloc(sizeof(struct CtdlMessage));
1075         memset(ret, 0, sizeof(struct CtdlMessage));
1076
1077         ret->cm_magic = CTDLMESSAGE_MAGIC;
1078         ret->cm_anon_type = *mptr++;    /* Anon type byte */
1079         ret->cm_format_type = *mptr++;  /* Format type byte */
1080
1081         /*
1082          * The rest is zero or more arbitrary fields.  Load them in.
1083          * We're done when we encounter either a zero-length field or
1084          * have just processed the 'M' (message text) field.
1085          */
1086         do {
1087                 if (mptr >= upper_bound) {
1088                         break;
1089                 }
1090                 field_header = *mptr++;
1091                 ret->cm_fields[field_header] = strdup(mptr);
1092
1093                 while (*mptr++ != 0);   /* advance to next field */
1094
1095         } while ((mptr < upper_bound) && (field_header != 'M'));
1096
1097         cdb_free(dmsgtext);
1098
1099         /* Always make sure there's something in the msg text field.  If
1100          * it's NULL, the message text is most likely stored separately,
1101          * so go ahead and fetch that.  Failing that, just set a dummy
1102          * body so other code doesn't barf.
1103          */
1104         if ( (ret->cm_fields['M'] == NULL) && (with_body) ) {
1105                 dmsgtext = cdb_fetch(CDB_BIGMSGS, &msgnum, sizeof(long));
1106                 if (dmsgtext != NULL) {
1107                         ret->cm_fields['M'] = strdup(dmsgtext->ptr);
1108                         cdb_free(dmsgtext);
1109                 }
1110         }
1111         if (ret->cm_fields['M'] == NULL) {
1112                 ret->cm_fields['M'] = strdup("\r\n\r\n (no text)\r\n");
1113         }
1114
1115         /* Perform "before read" hooks (aborting if any return nonzero) */
1116         if (PerformMessageHooks(ret, EVT_BEFOREREAD) > 0) {
1117                 CtdlFreeMessage(ret);
1118                 return NULL;
1119         }
1120
1121         return (ret);
1122 }
1123
1124
1125 /*
1126  * Returns 1 if the supplied pointer points to a valid Citadel message.
1127  * If the pointer is NULL or the magic number check fails, returns 0.
1128  */
1129 int is_valid_message(struct CtdlMessage *msg) {
1130         if (msg == NULL)
1131                 return 0;
1132         if ((msg->cm_magic) != CTDLMESSAGE_MAGIC) {
1133                 CtdlLogPrintf(CTDL_WARNING, "is_valid_message() -- self-check failed\n");
1134                 return 0;
1135         }
1136         return 1;
1137 }
1138
1139
1140 /*
1141  * 'Destructor' for struct CtdlMessage
1142  */
1143 void CtdlFreeMessage(struct CtdlMessage *msg)
1144 {
1145         int i;
1146
1147         if (is_valid_message(msg) == 0)
1148         {
1149                 if (msg != NULL) free (msg);
1150                 return;
1151         }
1152
1153         for (i = 0; i < 256; ++i)
1154                 if (msg->cm_fields[i] != NULL) {
1155                         free(msg->cm_fields[i]);
1156                 }
1157
1158         msg->cm_magic = 0;      /* just in case */
1159         free(msg);
1160 }
1161
1162
1163 /*
1164  * Pre callback function for multipart/alternative
1165  *
1166  * NOTE: this differs from the standard behavior for a reason.  Normally when
1167  *       displaying multipart/alternative you want to show the _last_ usable
1168  *       format in the message.  Here we show the _first_ one, because it's
1169  *       usually text/plain.  Since this set of functions is designed for text
1170  *       output to non-MIME-aware clients, this is the desired behavior.
1171  *
1172  */
1173 void fixed_output_pre(char *name, char *filename, char *partnum, char *disp,
1174                 void *content, char *cbtype, char *cbcharset, size_t length, char *encoding,
1175                 char *cbid, void *cbuserdata)
1176 {
1177         struct ma_info *ma;
1178
1179         ma = (struct ma_info *)cbuserdata;
1180         CtdlLogPrintf(CTDL_DEBUG, "fixed_output_pre() type=<%s>\n", cbtype);
1181         if (!strcasecmp(cbtype, "multipart/alternative")) {
1182                 ++ma->is_ma;
1183                 ma->did_print = 0;
1184         }
1185         if (!strcasecmp(cbtype, "message/rfc822")) {
1186                 ++ma->freeze;
1187         }
1188 }
1189
1190 /*
1191  * Post callback function for multipart/alternative
1192  */
1193 void fixed_output_post(char *name, char *filename, char *partnum, char *disp,
1194                 void *content, char *cbtype, char *cbcharset, size_t length,
1195                 char *encoding, char *cbid, void *cbuserdata)
1196 {
1197         struct ma_info *ma;
1198
1199         ma = (struct ma_info *)cbuserdata;
1200         CtdlLogPrintf(CTDL_DEBUG, "fixed_output_post() type=<%s>\n", cbtype);
1201         if (!strcasecmp(cbtype, "multipart/alternative")) {
1202                 --ma->is_ma;
1203                 ma->did_print = 0;
1204         }
1205         if (!strcasecmp(cbtype, "message/rfc822")) {
1206                 --ma->freeze;
1207         }
1208 }
1209
1210 /*
1211  * Inline callback function for mime parser that wants to display text
1212  */
1213 void fixed_output(char *name, char *filename, char *partnum, char *disp,
1214                 void *content, char *cbtype, char *cbcharset, size_t length,
1215                 char *encoding, char *cbid, void *cbuserdata)
1216 {
1217         char *ptr;
1218         char *wptr;
1219         size_t wlen;
1220         struct ma_info *ma;
1221
1222         ma = (struct ma_info *)cbuserdata;
1223
1224         CtdlLogPrintf(CTDL_DEBUG,
1225                 "fixed_output() part %s: %s (%s) (%ld bytes)\n",
1226                 partnum, filename, cbtype, (long)length);
1227
1228         /*
1229          * If we're in the middle of a multipart/alternative scope and
1230          * we've already printed another section, skip this one.
1231          */
1232         if ( (ma->is_ma) && (ma->did_print) ) {
1233                 CtdlLogPrintf(CTDL_DEBUG, "Skipping part %s (%s)\n", partnum, cbtype);
1234                 return;
1235         }
1236         ma->did_print = 1;
1237
1238         if ( (!strcasecmp(cbtype, "text/plain"))
1239            || (IsEmptyStr(cbtype)) ) {
1240                 wptr = content;
1241                 if (length > 0) {
1242                         client_write(wptr, length);
1243                         if (wptr[length-1] != '\n') {
1244                                 cprintf("\n");
1245                         }
1246                 }
1247                 return;
1248         }
1249
1250         if (!strcasecmp(cbtype, "text/html")) {
1251                 ptr = html_to_ascii(content, length, 80, 0);
1252                 wlen = strlen(ptr);
1253                 client_write(ptr, wlen);
1254                 if (ptr[wlen-1] != '\n') {
1255                         cprintf("\n");
1256                 }
1257                 free(ptr);
1258                 return;
1259         }
1260
1261         if (ma->use_fo_hooks) {
1262                 if (PerformFixedOutputHooks(cbtype, content, length)) {
1263                 /* above function returns nonzero if it handled the part */
1264                         return;
1265                 }
1266         }
1267
1268         if (strncasecmp(cbtype, "multipart/", 10)) {
1269                 cprintf("Part %s: %s (%s) (%ld bytes)\r\n",
1270                         partnum, filename, cbtype, (long)length);
1271                 return;
1272         }
1273 }
1274
1275 /*
1276  * The client is elegant and sophisticated and wants to be choosy about
1277  * MIME content types, so figure out which multipart/alternative part
1278  * we're going to send.
1279  *
1280  * We use a system of weights.  When we find a part that matches one of the
1281  * MIME types we've declared as preferential, we can store it in ma->chosen_part
1282  * and then set ma->chosen_pref to that MIME type's position in our preference
1283  * list.  If we then hit another match, we only replace the first match if
1284  * the preference value is lower.
1285  */
1286 void choose_preferred(char *name, char *filename, char *partnum, char *disp,
1287                 void *content, char *cbtype, char *cbcharset, size_t length,
1288                 char *encoding, char *cbid, void *cbuserdata)
1289 {
1290         char buf[1024];
1291         int i;
1292         struct ma_info *ma;
1293
1294         ma = (struct ma_info *)cbuserdata;
1295
1296         // NOTE: REMOVING THIS CONDITIONAL FIXES BUG 220
1297         //       http://bugzilla.citadel.org/show_bug.cgi?id=220
1298         // I don't know if there are any side effects!  Please TEST TEST TEST
1299         //if (ma->is_ma > 0) {
1300
1301         for (i=0; i<num_tokens(CC->preferred_formats, '|'); ++i) {
1302                 extract_token(buf, CC->preferred_formats, i, '|', sizeof buf);
1303                 if ( (!strcasecmp(buf, cbtype)) && (!ma->freeze) ) {
1304                         if (i < ma->chosen_pref) {
1305                                 CtdlLogPrintf(CTDL_DEBUG, "Setting chosen part: <%s>\n", partnum);
1306                                 safestrncpy(ma->chosen_part, partnum, sizeof ma->chosen_part);
1307                                 ma->chosen_pref = i;
1308                         }
1309                 }
1310         }
1311 }
1312
1313 /*
1314  * Now that we've chosen our preferred part, output it.
1315  */
1316 void output_preferred(char *name, char *filename, char *partnum, char *disp,
1317                 void *content, char *cbtype, char *cbcharset, size_t length,
1318                 char *encoding, char *cbid, void *cbuserdata)
1319 {
1320         int i;
1321         char buf[128];
1322         int add_newline = 0;
1323         char *text_content;
1324         struct ma_info *ma;
1325
1326         ma = (struct ma_info *)cbuserdata;
1327
1328         /* This is not the MIME part you're looking for... */
1329         if (strcasecmp(partnum, ma->chosen_part)) return;
1330
1331         /* If the content-type of this part is in our preferred formats
1332          * list, we can simply output it verbatim.
1333          */
1334         for (i=0; i<num_tokens(CC->preferred_formats, '|'); ++i) {
1335                 extract_token(buf, CC->preferred_formats, i, '|', sizeof buf);
1336                 if (!strcasecmp(buf, cbtype)) {
1337                         /* Yeah!  Go!  W00t!! */
1338
1339                         text_content = (char *)content;
1340                         if (text_content[length-1] != '\n') {
1341                                 ++add_newline;
1342                         }
1343                         cprintf("Content-type: %s", cbtype);
1344                         if (!IsEmptyStr(cbcharset)) {
1345                                 cprintf("; charset=%s", cbcharset);
1346                         }
1347                         cprintf("\nContent-length: %d\n",
1348                                 (int)(length + add_newline) );
1349                         if (!IsEmptyStr(encoding)) {
1350                                 cprintf("Content-transfer-encoding: %s\n", encoding);
1351                         }
1352                         else {
1353                                 cprintf("Content-transfer-encoding: 7bit\n");
1354                         }
1355                         cprintf("X-Citadel-MSG4-Partnum: %s\n", partnum);
1356                         cprintf("\n");
1357                         client_write(content, length);
1358                         if (add_newline) cprintf("\n");
1359                         return;
1360                 }
1361         }
1362
1363         /* No translations required or possible: output as text/plain */
1364         cprintf("Content-type: text/plain\n\n");
1365         fixed_output(name, filename, partnum, disp, content, cbtype, cbcharset,
1366                         length, encoding, cbid, cbuserdata);
1367 }
1368
1369
1370 struct encapmsg {
1371         char desired_section[64];
1372         char *msg;
1373         size_t msglen;
1374 };
1375
1376
1377 /*
1378  * Callback function for
1379  */
1380 void extract_encapsulated_message(char *name, char *filename, char *partnum, char *disp,
1381                    void *content, char *cbtype, char *cbcharset, size_t length,
1382                    char *encoding, char *cbid, void *cbuserdata)
1383 {
1384         struct encapmsg *encap;
1385
1386         encap = (struct encapmsg *)cbuserdata;
1387
1388         /* Only proceed if this is the desired section... */
1389         if (!strcasecmp(encap->desired_section, partnum)) {
1390                 encap->msglen = length;
1391                 encap->msg = malloc(length + 2);
1392                 memcpy(encap->msg, content, length);
1393                 return;
1394         }
1395
1396 }
1397
1398
1399
1400
1401 /*
1402  * Get a message off disk.  (returns om_* values found in msgbase.h)
1403  *
1404  */
1405 int CtdlOutputMsg(long msg_num,         /* message number (local) to fetch */
1406                   int mode,             /* how would you like that message? */
1407                   int headers_only,     /* eschew the message body? */
1408                   int do_proto,         /* do Citadel protocol responses? */
1409                   int crlf,             /* Use CRLF newlines instead of LF? */
1410                   char *section,        /* NULL or a message/rfc822 section */
1411                   int flags             /* should the bessage be exported clean? */
1412 ) {
1413         struct CtdlMessage *TheMessage = NULL;
1414         int retcode = om_no_such_msg;
1415         struct encapmsg encap;
1416
1417         CtdlLogPrintf(CTDL_DEBUG, "CtdlOutputMsg() msgnum=%ld, mode=%d, section=%s\n",
1418                 msg_num, mode,
1419                 (section ? section : "<>")
1420         );
1421
1422         if ((!(CC->logged_in)) && (!(CC->internal_pgm))) {
1423                 if (do_proto) cprintf("%d Not logged in.\n",
1424                         ERROR + NOT_LOGGED_IN);
1425                 return(om_not_logged_in);
1426         }
1427
1428         /* FIXME: check message id against msglist for this room */
1429
1430         /*
1431          * Fetch the message from disk.  If we're in HEADERS_FAST mode,
1432          * request that we don't even bother loading the body into memory.
1433          */
1434         if (headers_only == HEADERS_FAST) {
1435                 TheMessage = CtdlFetchMessage(msg_num, 0);
1436         }
1437         else {
1438                 TheMessage = CtdlFetchMessage(msg_num, 1);
1439         }
1440
1441         if (TheMessage == NULL) {
1442                 if (do_proto) cprintf("%d Can't locate msg %ld on disk\n",
1443                         ERROR + MESSAGE_NOT_FOUND, msg_num);
1444                 return(om_no_such_msg);
1445         }
1446
1447         /* Here is the weird form of this command, to process only an
1448          * encapsulated message/rfc822 section.
1449          */
1450         if (section) if (!IsEmptyStr(section)) if (strcmp(section, "0")) {
1451                 memset(&encap, 0, sizeof encap);
1452                 safestrncpy(encap.desired_section, section, sizeof encap.desired_section);
1453                 mime_parser(TheMessage->cm_fields['M'],
1454                         NULL,
1455                         *extract_encapsulated_message,
1456                         NULL, NULL, (void *)&encap, 0
1457                 );
1458                 CtdlFreeMessage(TheMessage);
1459                 TheMessage = NULL;
1460
1461                 if (encap.msg) {
1462                         encap.msg[encap.msglen] = 0;
1463                         TheMessage = convert_internet_message(encap.msg);
1464                         encap.msg = NULL;       /* no free() here, TheMessage owns it now */
1465
1466                         /* Now we let it fall through to the bottom of this
1467                          * function, because TheMessage now contains the
1468                          * encapsulated message instead of the top-level
1469                          * message.  Isn't that neat?
1470                          */
1471
1472                 }
1473                 else {
1474                         if (do_proto) cprintf("%d msg %ld has no part %s\n",
1475                                 ERROR + MESSAGE_NOT_FOUND, msg_num, section);
1476                         retcode = om_no_such_msg;
1477                 }
1478
1479         }
1480
1481         /* Ok, output the message now */
1482         retcode = CtdlOutputPreLoadedMsg(TheMessage, mode, headers_only, do_proto, crlf, flags);
1483         CtdlFreeMessage(TheMessage);
1484
1485         return(retcode);
1486 }
1487
1488
1489 char *qp_encode_email_addrs(char *source)
1490 {
1491         char user[256], node[256], name[256];
1492         const char headerStr[] = "=?UTF-8?Q?";
1493         char *Encoded;
1494         char *EncodedName;
1495         char *nPtr;
1496         int need_to_encode = 0;
1497         long SourceLen;
1498         long EncodedMaxLen;
1499         long nColons = 0;
1500         long *AddrPtr;
1501         long *AddrUtf8;
1502         long nAddrPtrMax = 50;
1503         long nmax;
1504         int InQuotes = 0;
1505         int i, n;
1506
1507         if (source == NULL) return source;
1508         if (IsEmptyStr(source)) return source;
1509
1510         AddrPtr = malloc (sizeof (long) * nAddrPtrMax);
1511         AddrUtf8 = malloc (sizeof (long) * nAddrPtrMax);
1512         memset(AddrUtf8, 0, sizeof (long) * nAddrPtrMax);
1513         *AddrPtr = 0;
1514         i = 0;
1515         while (!IsEmptyStr (&source[i])) {
1516                 if (nColons >= nAddrPtrMax){
1517                         long *ptr;
1518
1519                         ptr = (long *) malloc(sizeof (long) * nAddrPtrMax * 2);
1520                         memcpy (ptr, AddrPtr, sizeof (long) * nAddrPtrMax);
1521                         free (AddrPtr), AddrPtr = ptr;
1522
1523                         ptr = (long *) malloc(sizeof (long) * nAddrPtrMax * 2);
1524                         memset(&ptr[nAddrPtrMax], 0,
1525                                sizeof (long) * nAddrPtrMax);
1526
1527                         memcpy (ptr, AddrUtf8, sizeof (long) * nAddrPtrMax);
1528                         free (AddrUtf8), AddrUtf8 = ptr;
1529                         nAddrPtrMax *= 2;
1530                 }
1531                 if (((unsigned char) source[i] < 32) ||
1532                     ((unsigned char) source[i] > 126)) {
1533                         need_to_encode = 1;
1534                         AddrUtf8[nColons] = 1;
1535                 }
1536                 if (source[i] == '"')
1537                         InQuotes = !InQuotes;
1538                 if (!InQuotes && source[i] == ',') {
1539                         AddrPtr[nColons] = i;
1540                         nColons++;
1541                 }
1542                 i++;
1543         }
1544         if (need_to_encode == 0) {
1545                 free(AddrPtr);
1546                 free(AddrUtf8);
1547                 return source;
1548         }
1549
1550         SourceLen = i;
1551         EncodedMaxLen = nColons * (sizeof(headerStr) + 3) + SourceLen * 3;
1552         Encoded = (char*) malloc (EncodedMaxLen);
1553
1554         for (i = 0; i < nColons; i++)
1555                 source[AddrPtr[i]++] = '\0';
1556
1557         nPtr = Encoded;
1558         *nPtr = '\0';
1559         for (i = 0; i < nColons && nPtr != NULL; i++) {
1560                 nmax = EncodedMaxLen - (nPtr - Encoded);
1561                 if (AddrUtf8[i]) {
1562                         process_rfc822_addr(&source[AddrPtr[i]],
1563                                             user,
1564                                             node,
1565                                             name);
1566                         /* TODO: libIDN here ! */
1567                         if (IsEmptyStr(name)) {
1568                                 n = snprintf(nPtr, nmax,
1569                                              (i==0)?"%s@%s" : ",%s@%s",
1570                                              user, node);
1571                         }
1572                         else {
1573                                 EncodedName = rfc2047encode(name, strlen(name));
1574                                 n = snprintf(nPtr, nmax,
1575                                              (i==0)?"%s <%s@%s>" : ",%s <%s@%s>",
1576                                              EncodedName, user, node);
1577                                 free(EncodedName);
1578                         }
1579                 }
1580                 else {
1581                         n = snprintf(nPtr, nmax,
1582                                      (i==0)?"%s" : ",%s",
1583                                      &source[AddrPtr[i]]);
1584                 }
1585                 if (n > 0 )
1586                         nPtr += n;
1587                 else {
1588                         char *ptr, *nnPtr;
1589                         ptr = (char*) malloc(EncodedMaxLen * 2);
1590                         memcpy(ptr, Encoded, EncodedMaxLen);
1591                         nnPtr = ptr + (nPtr - Encoded), nPtr = nnPtr;
1592                         free(Encoded), Encoded = ptr;
1593                         EncodedMaxLen *= 2;
1594                         i--; /* do it once more with properly lengthened buffer */
1595                 }
1596         }
1597         for (i = 0; i < nColons; i++)
1598                 source[--AddrPtr[i]] = ',';
1599         free(AddrUtf8);
1600         free(AddrPtr);
1601         return Encoded;
1602 }
1603
1604
1605 /* If the last item in a list of recipients was truncated to a partial address,
1606  * remove it completely in order to avoid choking libSieve
1607  */
1608 void sanitize_truncated_recipient(char *str)
1609 {
1610         if (!str) return;
1611         if (num_tokens(str, ',') < 2) return;
1612
1613         int len = strlen(str);
1614         if (len < 900) return;
1615         if (len > 998) str[998] = 0;
1616
1617         char *cptr = strrchr(str, ',');
1618         if (!cptr) return;
1619
1620         char *lptr = strchr(cptr, '<');
1621         char *rptr = strchr(cptr, '>');
1622
1623         if ( (lptr) && (rptr) && (rptr > lptr) ) return;
1624
1625         *cptr = 0;
1626 }
1627
1628
1629
1630 /*
1631  * Get a message off disk.  (returns om_* values found in msgbase.h)
1632  */
1633 int CtdlOutputPreLoadedMsg(
1634                 struct CtdlMessage *TheMessage,
1635                 int mode,               /* how would you like that message? */
1636                 int headers_only,       /* eschew the message body? */
1637                 int do_proto,           /* do Citadel protocol responses? */
1638                 int crlf,               /* Use CRLF newlines instead of LF? */
1639                 int flags               /* should the bessage be exported clean? */
1640 ) {
1641         int i, j, k;
1642         char buf[SIZ];
1643         cit_uint8_t ch, prev_ch;
1644         char allkeys[30];
1645         char display_name[256];
1646         char *mptr, *mpptr;
1647         char *nl;       /* newline string */
1648         int suppress_f = 0;
1649         int subject_found = 0;
1650         struct ma_info ma;
1651
1652         /* Buffers needed for RFC822 translation.  These are all filled
1653          * using functions that are bounds-checked, and therefore we can
1654          * make them substantially smaller than SIZ.
1655          */
1656         char suser[100];
1657         char luser[100];
1658         char fuser[100];
1659         char snode[100];
1660         char mid[100];
1661         char datestamp[100];
1662
1663         CtdlLogPrintf(CTDL_DEBUG, "CtdlOutputPreLoadedMsg(TheMessage=%s, %d, %d, %d, %d\n",
1664                 ((TheMessage == NULL) ? "NULL" : "not null"),
1665                 mode, headers_only, do_proto, crlf);
1666
1667         strcpy(mid, "unknown");
1668         nl = (crlf ? "\r\n" : "\n");
1669
1670         if (!is_valid_message(TheMessage)) {
1671                 CtdlLogPrintf(CTDL_ERR,
1672                         "ERROR: invalid preloaded message for output\n");
1673                 cit_backtrace ();
1674                 return(om_no_such_msg);
1675         }
1676
1677         /* Are we downloading a MIME component? */
1678         if (mode == MT_DOWNLOAD) {
1679                 if (TheMessage->cm_format_type != FMT_RFC822) {
1680                         if (do_proto)
1681                                 cprintf("%d This is not a MIME message.\n",
1682                                 ERROR + ILLEGAL_VALUE);
1683                 } else if (CC->download_fp != NULL) {
1684                         if (do_proto) cprintf(
1685                                 "%d You already have a download open.\n",
1686                                 ERROR + RESOURCE_BUSY);
1687                 } else {
1688                         /* Parse the message text component */
1689                         mptr = TheMessage->cm_fields['M'];
1690                         mime_parser(mptr, NULL, *mime_download, NULL, NULL, NULL, 0);
1691                         /* If there's no file open by this time, the requested
1692                          * section wasn't found, so print an error
1693                          */
1694                         if (CC->download_fp == NULL) {
1695                                 if (do_proto) cprintf(
1696                                         "%d Section %s not found.\n",
1697                                         ERROR + FILE_NOT_FOUND,
1698                                         CC->download_desired_section);
1699                         }
1700                 }
1701                 return((CC->download_fp != NULL) ? om_ok : om_mime_error);
1702         }
1703
1704         /* MT_SPEW_SECTION is like MT_DOWNLOAD except it outputs the whole MIME part
1705          * in a single server operation instead of opening a download file.
1706          */
1707         if (mode == MT_SPEW_SECTION) {
1708                 if (TheMessage->cm_format_type != FMT_RFC822) {
1709                         if (do_proto)
1710                                 cprintf("%d This is not a MIME message.\n",
1711                                 ERROR + ILLEGAL_VALUE);
1712                 } else {
1713                         /* Parse the message text component */
1714                         int found_it = 0;
1715
1716                         mptr = TheMessage->cm_fields['M'];
1717                         mime_parser(mptr, NULL, *mime_spew_section, NULL, NULL, (void *)&found_it, 0);
1718                         /* If section wasn't found, print an error
1719                          */
1720                         if (!found_it) {
1721                                 if (do_proto) cprintf(
1722                                         "%d Section %s not found.\n",
1723                                         ERROR + FILE_NOT_FOUND,
1724                                         CC->download_desired_section);
1725                         }
1726                 }
1727                 return((CC->download_fp != NULL) ? om_ok : om_mime_error);
1728         }
1729
1730         /* now for the user-mode message reading loops */
1731         if (do_proto) cprintf("%d msg:\n", LISTING_FOLLOWS);
1732
1733         /* Does the caller want to skip the headers? */
1734         if (headers_only == HEADERS_NONE) goto START_TEXT;
1735
1736         /* Tell the client which format type we're using. */
1737         if ( (mode == MT_CITADEL) && (do_proto) ) {
1738                 cprintf("type=%d\n", TheMessage->cm_format_type);
1739         }
1740
1741         /* nhdr=yes means that we're only displaying headers, no body */
1742         if ( (TheMessage->cm_anon_type == MES_ANONONLY)
1743            && ((mode == MT_CITADEL) || (mode == MT_MIME))
1744            && (do_proto)
1745            ) {
1746                 cprintf("nhdr=yes\n");
1747         }
1748
1749         /* begin header processing loop for Citadel message format */
1750
1751         if ((mode == MT_CITADEL) || (mode == MT_MIME)) {
1752
1753                 safestrncpy(display_name, "<unknown>", sizeof display_name);
1754                 if (TheMessage->cm_fields['A']) {
1755                         strcpy(buf, TheMessage->cm_fields['A']);
1756                         if (TheMessage->cm_anon_type == MES_ANONONLY) {
1757                                 safestrncpy(display_name, "****", sizeof display_name);
1758                         }
1759                         else if (TheMessage->cm_anon_type == MES_ANONOPT) {
1760                                 safestrncpy(display_name, "anonymous", sizeof display_name);
1761                         }
1762                         else {
1763                                 safestrncpy(display_name, buf, sizeof display_name);
1764                         }
1765                         if ((is_room_aide())
1766                             && ((TheMessage->cm_anon_type == MES_ANONONLY)
1767                              || (TheMessage->cm_anon_type == MES_ANONOPT))) {
1768                                 size_t tmp = strlen(display_name);
1769                                 snprintf(&display_name[tmp],
1770                                          sizeof display_name - tmp,
1771                                          " [%s]", buf);
1772                         }
1773                 }
1774
1775                 /* Don't show Internet address for users on the
1776                  * local Citadel network.
1777                  */
1778                 suppress_f = 0;
1779                 if (TheMessage->cm_fields['N'] != NULL)
1780                    if (!IsEmptyStr(TheMessage->cm_fields['N']))
1781                       if (haschar(TheMessage->cm_fields['N'], '.') == 0) {
1782                         suppress_f = 1;
1783                 }
1784
1785                 /* Now spew the header fields in the order we like them. */
1786                 safestrncpy(allkeys, FORDER, sizeof allkeys);
1787                 for (i=0; i<strlen(allkeys); ++i) {
1788                         k = (int) allkeys[i];
1789                         if (k != 'M') {
1790                                 if ( (TheMessage->cm_fields[k] != NULL)
1791                                    && (msgkeys[k] != NULL) ) {
1792                                         if ((k == 'V') || (k == 'R') || (k == 'Y')) {
1793                                                 sanitize_truncated_recipient(TheMessage->cm_fields[k]);
1794                                         }
1795                                         if (k == 'A') {
1796                                                 if (do_proto) cprintf("%s=%s\n",
1797                                                         msgkeys[k],
1798                                                         display_name);
1799                                         }
1800                                         else if ((k == 'F') && (suppress_f)) {
1801                                                 /* do nothing */
1802                                         }
1803                                         /* Masquerade display name if needed */
1804                                         else {
1805                                                 if (do_proto) cprintf("%s=%s\n",
1806                                                         msgkeys[k],
1807                                                         TheMessage->cm_fields[k]
1808                                         );
1809                                         }
1810                                 }
1811                         }
1812                 }
1813
1814         }
1815
1816         /* begin header processing loop for RFC822 transfer format */
1817
1818         strcpy(suser, "");
1819         strcpy(luser, "");
1820         strcpy(fuser, "");
1821         strcpy(snode, NODENAME);
1822         if (mode == MT_RFC822) {
1823                 for (i = 0; i < 256; ++i) {
1824                         if (TheMessage->cm_fields[i]) {
1825                                 mptr = mpptr = TheMessage->cm_fields[i];
1826
1827                                 if (i == 'A') {
1828                                         safestrncpy(luser, mptr, sizeof luser);
1829                                         safestrncpy(suser, mptr, sizeof suser);
1830                                 }
1831                                 else if (i == 'Y') {
1832                                         if ((flags & QP_EADDR) != 0) {
1833                                                 mptr = qp_encode_email_addrs(mptr);
1834                                         }
1835                                         sanitize_truncated_recipient(mptr);
1836                                         cprintf("CC: %s%s", mptr, nl);
1837                                 }
1838                                 else if (i == 'P') {
1839                                         cprintf("Return-Path: %s%s", mptr, nl);
1840                                 }
1841                                 else if (i == 'L') {
1842                                         cprintf("List-ID: %s%s", mptr, nl);
1843                                 }
1844                                 else if (i == 'V') {
1845                                         if ((flags & QP_EADDR) != 0)
1846                                                 mptr = qp_encode_email_addrs(mptr);
1847                                         cprintf("Envelope-To: %s%s", mptr, nl);
1848                                 }
1849                                 else if (i == 'U') {
1850                                         cprintf("Subject: %s%s", mptr, nl);
1851                                         subject_found = 1;
1852                                 }
1853                                 else if (i == 'I')
1854                                         safestrncpy(mid, mptr, sizeof mid);
1855                                 else if (i == 'F')
1856                                         safestrncpy(fuser, mptr, sizeof fuser);
1857                                 /* else if (i == 'O')
1858                                         cprintf("X-Citadel-Room: %s%s",
1859                                                 mptr, nl); */
1860                                 else if (i == 'N')
1861                                         safestrncpy(snode, mptr, sizeof snode);
1862                                 else if (i == 'R')
1863                                 {
1864                                         if (haschar(mptr, '@') == 0)
1865                                         {
1866                                                 sanitize_truncated_recipient(mptr);
1867                                                 cprintf("To: %s@%s", mptr, config.c_fqdn);
1868                                                 cprintf("%s", nl);
1869                                         }
1870                                         else
1871                                         {
1872                                                 if ((flags & QP_EADDR) != 0) {
1873                                                         mptr = qp_encode_email_addrs(mptr);
1874                                                 }
1875                                                 sanitize_truncated_recipient(mptr);
1876                                                 cprintf("To: %s", mptr);
1877                                                 cprintf("%s", nl);
1878                                         }
1879                                 }
1880                                 else if (i == 'T') {
1881                                         datestring(datestamp, sizeof datestamp,
1882                                                 atol(mptr), DATESTRING_RFC822);
1883                                         cprintf("Date: %s%s", datestamp, nl);
1884                                 }
1885                                 else if (i == 'W') {
1886                                         cprintf("References: ");
1887                                         k = num_tokens(mptr, '|');
1888                                         for (j=0; j<k; ++j) {
1889                                                 extract_token(buf, mptr, j, '|', sizeof buf);
1890                                                 cprintf("<%s>", buf);
1891                                                 if (j == (k-1)) {
1892                                                         cprintf("%s", nl);
1893                                                 }
1894                                                 else {
1895                                                         cprintf(" ");
1896                                                 }
1897                                         }
1898                                 }
1899                                 if (mptr != mpptr)
1900                                         free (mptr);
1901                         }
1902                 }
1903                 if (subject_found == 0) {
1904                         cprintf("Subject: (no subject)%s", nl);
1905                 }
1906         }
1907
1908         for (i=0; !IsEmptyStr(&suser[i]); ++i) {
1909                 suser[i] = tolower(suser[i]);
1910                 if (!isalnum(suser[i])) suser[i]='_';
1911         }
1912
1913         if (mode == MT_RFC822) {
1914                 if (!strcasecmp(snode, NODENAME)) {
1915                         safestrncpy(snode, FQDN, sizeof snode);
1916                 }
1917
1918                 /* Construct a fun message id */
1919                 cprintf("Message-ID: <%s", mid);/// todo: this possibly breaks threadding mails.
1920                 if (strchr(mid, '@')==NULL) {
1921                         cprintf("@%s", snode);
1922                 }
1923                 cprintf(">%s", nl);
1924
1925                 if (!is_room_aide() && (TheMessage->cm_anon_type == MES_ANONONLY)) {
1926                         cprintf("From: \"----\" <x@x.org>%s", nl);
1927                 }
1928                 else if (!is_room_aide() && (TheMessage->cm_anon_type == MES_ANONOPT)) {
1929                         cprintf("From: \"anonymous\" <x@x.org>%s", nl);
1930                 }
1931                 else if (!IsEmptyStr(fuser)) {
1932                         cprintf("From: \"%s\" <%s>%s", luser, fuser, nl);
1933                 }
1934                 else {
1935                         cprintf("From: \"%s\" <%s@%s>%s", luser, suser, snode, nl);
1936                 }
1937
1938                 /* Blank line signifying RFC822 end-of-headers */
1939                 if (TheMessage->cm_format_type != FMT_RFC822) {
1940                         cprintf("%s", nl);
1941                 }
1942         }
1943
1944         /* end header processing loop ... at this point, we're in the text */
1945 START_TEXT:
1946         if (headers_only == HEADERS_FAST) goto DONE;
1947         mptr = TheMessage->cm_fields['M'];
1948
1949         /* Tell the client about the MIME parts in this message */
1950         if (TheMessage->cm_format_type == FMT_RFC822) {
1951                 if ( (mode == MT_CITADEL) || (mode == MT_MIME) ) {
1952                         memset(&ma, 0, sizeof(struct ma_info));
1953                         mime_parser(mptr, NULL,
1954                                 (do_proto ? *list_this_part : NULL),
1955                                 (do_proto ? *list_this_pref : NULL),
1956                                 (do_proto ? *list_this_suff : NULL),
1957                                 (void *)&ma, 0);
1958                 }
1959                 else if (mode == MT_RFC822) {   /* unparsed RFC822 dump */
1960                         char *start_of_text = NULL;
1961                         start_of_text = strstr(mptr, "\n\r\n");
1962                         if (start_of_text == NULL) start_of_text = strstr(mptr, "\n\n");
1963                         if (start_of_text == NULL) start_of_text = mptr;
1964                         ++start_of_text;
1965                         start_of_text = strstr(start_of_text, "\n");
1966                         ++start_of_text;
1967
1968                         char outbuf[1024];
1969                         int outlen = 0;
1970                         int nllen = strlen(nl);
1971                         prev_ch = 0;
1972                         while (ch=*mptr, ch!=0) {
1973                                 if (ch==13) {
1974                                         /* do nothing */
1975                                 }
1976                                 else {
1977                                         if (
1978                                                 ((headers_only == HEADERS_NONE) && (mptr >= start_of_text))
1979                                            ||   ((headers_only == HEADERS_ONLY) && (mptr < start_of_text))
1980                                            ||   ((headers_only != HEADERS_NONE) && (headers_only != HEADERS_ONLY))
1981                                         ) {
1982                                                 if (ch == 10) {
1983                                                         sprintf(&outbuf[outlen], "%s", nl);
1984                                                         outlen += nllen;
1985                                                 }
1986                                                 else {
1987                                                         outbuf[outlen++] = ch;
1988                                                 }
1989                                         }
1990                                 }
1991                                 if (flags & ESC_DOT)
1992                                 {
1993                                         if ((prev_ch == 10) && (ch == '.') && ((*(mptr+1) == 13) || (*(mptr+1) == 10)))
1994                                         {
1995                                                 outbuf[outlen++] = '.';
1996                                         }
1997                                 }
1998                                 prev_ch = ch;
1999                                 ++mptr;
2000                                 if (outlen > 1000) {
2001                                         client_write(outbuf, outlen);
2002                                         outlen = 0;
2003                                 }
2004                         }
2005                         if (outlen > 0) {
2006                                 client_write(outbuf, outlen);
2007                                 outlen = 0;
2008                         }
2009
2010                         goto DONE;
2011                 }
2012         }
2013
2014         if (headers_only == HEADERS_ONLY) {
2015                 goto DONE;
2016         }
2017
2018         /* signify start of msg text */
2019         if ( (mode == MT_CITADEL) || (mode == MT_MIME) ) {
2020                 if (do_proto) cprintf("text\n");
2021         }
2022
2023         /* If the format type on disk is 1 (fixed-format), then we want
2024          * everything to be output completely literally ... regardless of
2025          * what message transfer format is in use.
2026          */
2027         if (TheMessage->cm_format_type == FMT_FIXED) {
2028                 int buflen;
2029                 if (mode == MT_MIME) {
2030                         cprintf("Content-type: text/plain\n\n");
2031                 }
2032                 *buf = '\0';
2033                 buflen = 0;
2034                 while (ch = *mptr++, ch > 0) {
2035                         if (ch == 13)
2036                                 ch = 10;
2037                         if ((ch == 10) || (buflen > 250)) {
2038                                 buf[buflen] = '\0';
2039                                 cprintf("%s%s", buf, nl);
2040                                 *buf = '\0';
2041                                 buflen = 0;
2042                         } else {
2043                                 buf[buflen] = ch;
2044                                 buflen++;
2045                         }
2046                 }
2047                 buf[buflen] = '\0';
2048                 if (!IsEmptyStr(buf))
2049                         cprintf("%s%s", buf, nl);
2050         }
2051
2052         /* If the message on disk is format 0 (Citadel vari-format), we
2053          * output using the formatter at 80 columns.  This is the final output
2054          * form if the transfer format is RFC822, but if the transfer format
2055          * is Citadel proprietary, it'll still work, because the indentation
2056          * for new paragraphs is correct and the client will reformat the
2057          * message to the reader's screen width.
2058          */
2059         if (TheMessage->cm_format_type == FMT_CITADEL) {
2060                 if (mode == MT_MIME) {
2061                         cprintf("Content-type: text/x-citadel-variformat\n\n");
2062                 }
2063                 memfmout(mptr, 0, nl);
2064         }
2065
2066         /* If the message on disk is format 4 (MIME), we've gotta hand it
2067          * off to the MIME parser.  The client has already been told that
2068          * this message is format 1 (fixed format), so the callback function
2069          * we use will display those parts as-is.
2070          */
2071         if (TheMessage->cm_format_type == FMT_RFC822) {
2072                 memset(&ma, 0, sizeof(struct ma_info));
2073
2074                 if (mode == MT_MIME) {
2075                         ma.use_fo_hooks = 0;
2076                         strcpy(ma.chosen_part, "1");
2077                         ma.chosen_pref = 9999;
2078                         mime_parser(mptr, NULL,
2079                                 *choose_preferred, *fixed_output_pre,
2080                                 *fixed_output_post, (void *)&ma, 0);
2081                         mime_parser(mptr, NULL,
2082                                 *output_preferred, NULL, NULL, (void *)&ma, CC->msg4_dont_decode);
2083                 }
2084                 else {
2085                         ma.use_fo_hooks = 1;
2086                         mime_parser(mptr, NULL,
2087                                 *fixed_output, *fixed_output_pre,
2088                                 *fixed_output_post, (void *)&ma, 0);
2089                 }
2090
2091         }
2092
2093 DONE:   /* now we're done */
2094         if (do_proto) cprintf("000\n");
2095         return(om_ok);
2096 }
2097
2098
2099
2100 /*
2101  * display a message (mode 0 - Citadel proprietary)
2102  */
2103 void cmd_msg0(char *cmdbuf)
2104 {
2105         long msgid;
2106         int headers_only = HEADERS_ALL;
2107
2108         msgid = extract_long(cmdbuf, 0);
2109         headers_only = extract_int(cmdbuf, 1);
2110
2111         CtdlOutputMsg(msgid, MT_CITADEL, headers_only, 1, 0, NULL, 0);
2112         return;
2113 }
2114
2115
2116 /*
2117  * display a message (mode 2 - RFC822)
2118  */
2119 void cmd_msg2(char *cmdbuf)
2120 {
2121         long msgid;
2122         int headers_only = HEADERS_ALL;
2123
2124         msgid = extract_long(cmdbuf, 0);
2125         headers_only = extract_int(cmdbuf, 1);
2126
2127         CtdlOutputMsg(msgid, MT_RFC822, headers_only, 1, 1, NULL, 0);
2128 }
2129
2130
2131
2132 /*
2133  * display a message (mode 3 - IGnet raw format - internal programs only)
2134  */
2135 void cmd_msg3(char *cmdbuf)
2136 {
2137         long msgnum;
2138         struct CtdlMessage *msg = NULL;
2139         struct ser_ret smr;
2140
2141         if (CC->internal_pgm == 0) {
2142                 cprintf("%d This command is for internal programs only.\n",
2143                         ERROR + HIGHER_ACCESS_REQUIRED);
2144                 return;
2145         }
2146
2147         msgnum = extract_long(cmdbuf, 0);
2148         msg = CtdlFetchMessage(msgnum, 1);
2149         if (msg == NULL) {
2150                 cprintf("%d Message %ld not found.\n",
2151                         ERROR + MESSAGE_NOT_FOUND, msgnum);
2152                 return;
2153         }
2154
2155         serialize_message(&smr, msg);
2156         CtdlFreeMessage(msg);
2157
2158         if (smr.len == 0) {
2159                 cprintf("%d Unable to serialize message\n",
2160                         ERROR + INTERNAL_ERROR);
2161                 return;
2162         }
2163
2164         cprintf("%d %ld\n", BINARY_FOLLOWS, (long)smr.len);
2165         client_write((char *)smr.ser, (int)smr.len);
2166         free(smr.ser);
2167 }
2168
2169
2170
2171 /*
2172  * Display a message using MIME content types
2173  */
2174 void cmd_msg4(char *cmdbuf)
2175 {
2176         long msgid;
2177         char section[64];
2178
2179         msgid = extract_long(cmdbuf, 0);
2180         extract_token(section, cmdbuf, 1, '|', sizeof section);
2181         CtdlOutputMsg(msgid, MT_MIME, 0, 1, 0, (section[0] ? section : NULL) , 0);
2182 }
2183
2184
2185
2186 /*
2187  * Client tells us its preferred message format(s)
2188  */
2189 void cmd_msgp(char *cmdbuf)
2190 {
2191         if (!strcasecmp(cmdbuf, "dont_decode")) {
2192                 CC->msg4_dont_decode = 1;
2193                 cprintf("%d MSG4 will not pre-decode messages.\n", CIT_OK);
2194         }
2195         else {
2196                 safestrncpy(CC->preferred_formats, cmdbuf, sizeof(CC->preferred_formats));
2197                 cprintf("%d Preferred MIME formats have been set.\n", CIT_OK);
2198         }
2199 }
2200
2201
2202 /*
2203  * Open a component of a MIME message as a download file
2204  */
2205 void cmd_opna(char *cmdbuf)
2206 {
2207         long msgid;
2208         char desired_section[128];
2209
2210         msgid = extract_long(cmdbuf, 0);
2211         extract_token(desired_section, cmdbuf, 1, '|', sizeof desired_section);
2212         safestrncpy(CC->download_desired_section, desired_section,
2213                 sizeof CC->download_desired_section);
2214         CtdlOutputMsg(msgid, MT_DOWNLOAD, 0, 1, 1, NULL, 0);
2215 }
2216
2217
2218 /*
2219  * Open a component of a MIME message and transmit it all at once
2220  */
2221 void cmd_dlat(char *cmdbuf)
2222 {
2223         long msgid;
2224         char desired_section[128];
2225
2226         msgid = extract_long(cmdbuf, 0);
2227         extract_token(desired_section, cmdbuf, 1, '|', sizeof desired_section);
2228         safestrncpy(CC->download_desired_section, desired_section,
2229                 sizeof CC->download_desired_section);
2230         CtdlOutputMsg(msgid, MT_SPEW_SECTION, 0, 1, 1, NULL, 0);
2231 }
2232
2233
2234 /*
2235  * Save one or more message pointers into a specified room
2236  * (Returns 0 for success, nonzero for failure)
2237  * roomname may be NULL to use the current room
2238  *
2239  * Note that the 'supplied_msg' field may be set to NULL, in which case
2240  * the message will be fetched from disk, by number, if we need to perform
2241  * replication checks.  This adds an additional database read, so if the
2242  * caller already has the message in memory then it should be supplied.  (Obviously
2243  * this mode of operation only works if we're saving a single message.)
2244  */
2245 int CtdlSaveMsgPointersInRoom(char *roomname, long newmsgidlist[], int num_newmsgs,
2246                                 int do_repl_check, struct CtdlMessage *supplied_msg)
2247 {
2248         int i, j, unique;
2249         char hold_rm[ROOMNAMELEN];
2250         struct cdbdata *cdbfr;
2251         int num_msgs;
2252         long *msglist;
2253         long highest_msg = 0L;
2254
2255         long msgid = 0;
2256         struct CtdlMessage *msg = NULL;
2257
2258         long *msgs_to_be_merged = NULL;
2259         int num_msgs_to_be_merged = 0;
2260
2261         CtdlLogPrintf(CTDL_DEBUG,
2262                 "CtdlSaveMsgPointersInRoom(room=%s, num_msgs=%d, repl=%d)\n",
2263                 roomname, num_newmsgs, do_repl_check);
2264
2265         strcpy(hold_rm, CC->room.QRname);
2266
2267         /* Sanity checks */
2268         if (newmsgidlist == NULL) return(ERROR + INTERNAL_ERROR);
2269         if (num_newmsgs < 1) return(ERROR + INTERNAL_ERROR);
2270         if (num_newmsgs > 1) supplied_msg = NULL;
2271
2272         /* Now the regular stuff */
2273         if (lgetroom(&CC->room,
2274            ((roomname != NULL) ? roomname : CC->room.QRname) )
2275            != 0) {
2276                 CtdlLogPrintf(CTDL_ERR, "No such room <%s>\n", roomname);
2277                 return(ERROR + ROOM_NOT_FOUND);
2278         }
2279
2280
2281         msgs_to_be_merged = malloc(sizeof(long) * num_newmsgs);
2282         num_msgs_to_be_merged = 0;
2283
2284
2285         cdbfr = cdb_fetch(CDB_MSGLISTS, &CC->room.QRnumber, sizeof(long));
2286         if (cdbfr == NULL) {
2287                 msglist = NULL;
2288                 num_msgs = 0;
2289         } else {
2290                 msglist = (long *) cdbfr->ptr;
2291                 cdbfr->ptr = NULL;      /* CtdlSaveMsgPointerInRoom() now owns this memory */
2292                 num_msgs = cdbfr->len / sizeof(long);
2293                 cdb_free(cdbfr);
2294         }
2295
2296
2297         /* Create a list of msgid's which were supplied by the caller, but do
2298          * not already exist in the target room.  It is absolutely taboo to
2299          * have more than one reference to the same message in a room.
2300          */
2301         for (i=0; i<num_newmsgs; ++i) {
2302                 unique = 1;
2303                 if (num_msgs > 0) for (j=0; j<num_msgs; ++j) {
2304                         if (msglist[j] == newmsgidlist[i]) {
2305                                 unique = 0;
2306                         }
2307                 }
2308                 if (unique) {
2309                         msgs_to_be_merged[num_msgs_to_be_merged++] = newmsgidlist[i];
2310                 }
2311         }
2312
2313         CtdlLogPrintf(9, "%d unique messages to be merged\n", num_msgs_to_be_merged);
2314
2315         /*
2316          * Now merge the new messages
2317          */
2318         msglist = realloc(msglist, (sizeof(long) * (num_msgs + num_msgs_to_be_merged)) );
2319         if (msglist == NULL) {
2320                 CtdlLogPrintf(CTDL_ALERT, "ERROR: can't realloc message list!\n");
2321         }
2322         memcpy(&msglist[num_msgs], msgs_to_be_merged, (sizeof(long) * num_msgs_to_be_merged) );
2323         num_msgs += num_msgs_to_be_merged;
2324
2325         /* Sort the message list, so all the msgid's are in order */
2326         num_msgs = sort_msglist(msglist, num_msgs);
2327
2328         /* Determine the highest message number */
2329         highest_msg = msglist[num_msgs - 1];
2330
2331         /* Write it back to disk. */
2332         cdb_store(CDB_MSGLISTS, &CC->room.QRnumber, (int)sizeof(long),
2333                   msglist, (int)(num_msgs * sizeof(long)));
2334
2335         /* Free up the memory we used. */
2336         free(msglist);
2337
2338         /* Update the highest-message pointer and unlock the room. */
2339         CC->room.QRhighest = highest_msg;
2340         lputroom(&CC->room);
2341
2342         /* Perform replication checks if necessary */
2343         if ( (DoesThisRoomNeedEuidIndexing(&CC->room)) && (do_repl_check) ) {
2344                 CtdlLogPrintf(CTDL_DEBUG, "CtdlSaveMsgPointerInRoom() doing repl checks\n");
2345
2346                 for (i=0; i<num_msgs_to_be_merged; ++i) {
2347                         msgid = msgs_to_be_merged[i];
2348
2349                         if (supplied_msg != NULL) {
2350                                 msg = supplied_msg;
2351                         }
2352                         else {
2353                                 msg = CtdlFetchMessage(msgid, 0);
2354                         }
2355
2356                         if (msg != NULL) {
2357                                 ReplicationChecks(msg);
2358
2359                                 /* If the message has an Exclusive ID, index that... */
2360                                 if (msg->cm_fields['E'] != NULL) {
2361                                         index_message_by_euid(msg->cm_fields['E'], &CC->room, msgid);
2362                                 }
2363
2364                                 /* Free up the memory we may have allocated */
2365                                 if (msg != supplied_msg) {
2366                                         CtdlFreeMessage(msg);
2367                                 }
2368                         }
2369
2370                 }
2371         }
2372
2373         else {
2374                 CtdlLogPrintf(CTDL_DEBUG, "CtdlSaveMsgPointerInRoom() skips repl checks\n");
2375         }
2376
2377         /* Submit this room for processing by hooks */
2378         PerformRoomHooks(&CC->room);
2379
2380         /* Go back to the room we were in before we wandered here... */
2381         getroom(&CC->room, hold_rm);
2382
2383         /* Bump the reference count for all messages which were merged */
2384         for (i=0; i<num_msgs_to_be_merged; ++i) {
2385                 AdjRefCount(msgs_to_be_merged[i], +1);
2386         }
2387
2388         /* Free up memory... */
2389         if (msgs_to_be_merged != NULL) {
2390                 free(msgs_to_be_merged);
2391         }
2392
2393         /* Return success. */
2394         return (0);
2395 }
2396
2397
2398 /*
2399  * This is the same as CtdlSaveMsgPointersInRoom() but it only accepts
2400  * a single message.
2401  */
2402 int CtdlSaveMsgPointerInRoom(char *roomname, long msgid,
2403                         int do_repl_check, struct CtdlMessage *supplied_msg)
2404 {
2405         return CtdlSaveMsgPointersInRoom(roomname, &msgid, 1, do_repl_check, supplied_msg);
2406 }
2407
2408
2409
2410
2411 /*
2412  * Message base operation to save a new message to the message store
2413  * (returns new message number)
2414  *
2415  * This is the back end for CtdlSubmitMsg() and should not be directly
2416  * called by server-side modules.
2417  *
2418  */
2419 long send_message(struct CtdlMessage *msg) {
2420         long newmsgid;
2421         long retval;
2422         char msgidbuf[256];
2423         struct ser_ret smr;
2424         int is_bigmsg = 0;
2425         char *holdM = NULL;
2426
2427         /* Get a new message number */
2428         newmsgid = get_new_message_number();
2429         snprintf(msgidbuf, sizeof msgidbuf, "%010ld@%s", newmsgid, config.c_fqdn);
2430
2431         /* Generate an ID if we don't have one already */
2432         if (msg->cm_fields['I']==NULL) {
2433                 msg->cm_fields['I'] = strdup(msgidbuf);
2434         }
2435
2436         /* If the message is big, set its body aside for storage elsewhere */
2437         if (msg->cm_fields['M'] != NULL) {
2438                 if (strlen(msg->cm_fields['M']) > BIGMSG) {
2439                         is_bigmsg = 1;
2440                         holdM = msg->cm_fields['M'];
2441                         msg->cm_fields['M'] = NULL;
2442                 }
2443         }
2444
2445         /* Serialize our data structure for storage in the database */
2446         serialize_message(&smr, msg);
2447
2448         if (is_bigmsg) {
2449                 msg->cm_fields['M'] = holdM;
2450         }
2451
2452         if (smr.len == 0) {
2453                 cprintf("%d Unable to serialize message\n",
2454                         ERROR + INTERNAL_ERROR);
2455                 return (-1L);
2456         }
2457
2458         /* Write our little bundle of joy into the message base */
2459         if (cdb_store(CDB_MSGMAIN, &newmsgid, (int)sizeof(long),
2460                       smr.ser, smr.len) < 0) {
2461                 CtdlLogPrintf(CTDL_ERR, "Can't store message\n");
2462                 retval = 0L;
2463         } else {
2464                 if (is_bigmsg) {
2465                         cdb_store(CDB_BIGMSGS,
2466                                 &newmsgid,
2467                                 (int)sizeof(long),
2468                                 holdM,
2469                                 (strlen(holdM) + 1)
2470                         );
2471                 }
2472                 retval = newmsgid;
2473         }
2474
2475         /* Free the memory we used for the serialized message */
2476         free(smr.ser);
2477
2478         /* Return the *local* message ID to the caller
2479          * (even if we're storing an incoming network message)
2480          */
2481         return(retval);
2482 }
2483
2484
2485
2486 /*
2487  * Serialize a struct CtdlMessage into the format used on disk and network.
2488  *
2489  * This function loads up a "struct ser_ret" (defined in server.h) which
2490  * contains the length of the serialized message and a pointer to the
2491  * serialized message in memory.  THE LATTER MUST BE FREED BY THE CALLER.
2492  */
2493 void serialize_message(struct ser_ret *ret,             /* return values */
2494                         struct CtdlMessage *msg)        /* unserialized msg */
2495 {
2496         size_t wlen, fieldlen;
2497         int i;
2498         static char *forder = FORDER;
2499
2500         /*
2501          * Check for valid message format
2502          */
2503         if (is_valid_message(msg) == 0) {
2504                 CtdlLogPrintf(CTDL_ERR, "serialize_message() aborting due to invalid message\n");
2505                 ret->len = 0;
2506                 ret->ser = NULL;
2507                 return;
2508         }
2509
2510         ret->len = 3;
2511         for (i=0; i<26; ++i) if (msg->cm_fields[(int)forder[i]] != NULL)
2512                 ret->len = ret->len +
2513                         strlen(msg->cm_fields[(int)forder[i]]) + 2;
2514
2515         ret->ser = malloc(ret->len);
2516         if (ret->ser == NULL) {
2517                 CtdlLogPrintf(CTDL_ERR, "serialize_message() malloc(%ld) failed: %s\n",
2518                         (long)ret->len, strerror(errno));
2519                 ret->len = 0;
2520                 ret->ser = NULL;
2521                 return;
2522         }
2523
2524         ret->ser[0] = 0xFF;
2525         ret->ser[1] = msg->cm_anon_type;
2526         ret->ser[2] = msg->cm_format_type;
2527         wlen = 3;
2528
2529         for (i=0; i<26; ++i) if (msg->cm_fields[(int)forder[i]] != NULL) {
2530                 fieldlen = strlen(msg->cm_fields[(int)forder[i]]);
2531                 ret->ser[wlen++] = (char)forder[i];
2532                 safestrncpy((char *)&ret->ser[wlen], msg->cm_fields[(int)forder[i]], fieldlen+1);
2533                 wlen = wlen + fieldlen + 1;
2534         }
2535         if (ret->len != wlen) CtdlLogPrintf(CTDL_ERR, "ERROR: len=%ld wlen=%ld\n",
2536                 (long)ret->len, (long)wlen);
2537
2538         return;
2539 }
2540
2541
2542 /*
2543  * Serialize a struct CtdlMessage into the format used on disk and network.
2544  *
2545  * This function loads up a "struct ser_ret" (defined in server.h) which
2546  * contains the length of the serialized message and a pointer to the
2547  * serialized message in memory.  THE LATTER MUST BE FREED BY THE CALLER.
2548  */
2549 void dump_message(struct CtdlMessage *msg,      /* unserialized msg */
2550                   long Siz)                     /* how many chars ? */
2551 {
2552         size_t wlen;
2553         int i;
2554         static char *forder = FORDER;
2555         char *buf;
2556
2557         /*
2558          * Check for valid message format
2559          */
2560         if (is_valid_message(msg) == 0) {
2561                 CtdlLogPrintf(CTDL_ERR, "dump_message() aborting due to invalid message\n");
2562                 return;
2563         }
2564
2565         buf = (char*) malloc (Siz + 1);
2566
2567         wlen = 3;
2568
2569         for (i=0; i<26; ++i) if (msg->cm_fields[(int)forder[i]] != NULL) {
2570                         snprintf (buf, Siz, " msg[%c] = %s ...\n", (char) forder[i],
2571                                    msg->cm_fields[(int)forder[i]]);
2572                         client_write (buf, strlen(buf));
2573                 }
2574
2575         return;
2576 }
2577
2578
2579
2580 /*
2581  * Check to see if any messages already exist in the current room which
2582  * carry the same Exclusive ID as this one.  If any are found, delete them.
2583  */
2584 void ReplicationChecks(struct CtdlMessage *msg) {
2585         long old_msgnum = (-1L);
2586
2587         if (DoesThisRoomNeedEuidIndexing(&CC->room) == 0) return;
2588
2589         CtdlLogPrintf(CTDL_DEBUG, "Performing replication checks in <%s>\n",
2590                 CC->room.QRname);
2591
2592         /* No exclusive id?  Don't do anything. */
2593         if (msg == NULL) return;
2594         if (msg->cm_fields['E'] == NULL) return;
2595         if (IsEmptyStr(msg->cm_fields['E'])) return;
2596         /*CtdlLogPrintf(CTDL_DEBUG, "Exclusive ID: <%s> for room <%s>\n",
2597                 msg->cm_fields['E'], CC->room.QRname);*/
2598
2599         old_msgnum = locate_message_by_euid(msg->cm_fields['E'], &CC->room);
2600         if (old_msgnum > 0L) {
2601                 CtdlLogPrintf(CTDL_DEBUG, "ReplicationChecks() replacing message %ld\n", old_msgnum);
2602                 CtdlDeleteMessages(CC->room.QRname, &old_msgnum, 1, "");
2603         }
2604 }
2605
2606
2607
2608 /*
2609  * Save a message to disk and submit it into the delivery system.
2610  */
2611 long CtdlSubmitMsg(struct CtdlMessage *msg,     /* message to save */
2612                    struct recptypes *recps,     /* recipients (if mail) */
2613                    char *force,                 /* force a particular room? */
2614                    int flags                    /* should the bessage be exported clean? */
2615 ) {
2616         char submit_filename[128];
2617         char generated_timestamp[32];
2618         char hold_rm[ROOMNAMELEN];
2619         char actual_rm[ROOMNAMELEN];
2620         char force_room[ROOMNAMELEN];
2621         char content_type[SIZ];                 /* We have to learn this */
2622         char recipient[SIZ];
2623         long newmsgid;
2624         char *mptr = NULL;
2625         struct ctdluser userbuf;
2626         int a, i;
2627         struct MetaData smi;
2628         FILE *network_fp = NULL;
2629         static int seqnum = 1;
2630         struct CtdlMessage *imsg = NULL;
2631         char *instr = NULL;
2632         size_t instr_alloc = 0;
2633         struct ser_ret smr;
2634         char *hold_R, *hold_D;
2635         char *collected_addresses = NULL;
2636         struct addresses_to_be_filed *aptr = NULL;
2637         char *saved_rfc822_version = NULL;
2638         int qualified_for_journaling = 0;
2639         struct CitContext *CCC = CC;            /* CachedCitContext - performance boost */
2640         char bounce_to[1024] = "";
2641         size_t tmp = 0;
2642
2643         CtdlLogPrintf(CTDL_DEBUG, "CtdlSubmitMsg() called\n");
2644         if (is_valid_message(msg) == 0) return(-1);     /* self check */
2645
2646         /* If this message has no timestamp, we take the liberty of
2647          * giving it one, right now.
2648          */
2649         if (msg->cm_fields['T'] == NULL) {
2650                 snprintf(generated_timestamp, sizeof generated_timestamp, "%ld", (long)time(NULL));
2651                 msg->cm_fields['T'] = strdup(generated_timestamp);
2652         }
2653
2654         /* If this message has no path, we generate one.
2655          */
2656         if (msg->cm_fields['P'] == NULL) {
2657                 if (msg->cm_fields['A'] != NULL) {
2658                         msg->cm_fields['P'] = strdup(msg->cm_fields['A']);
2659                         for (a=0; !IsEmptyStr(&msg->cm_fields['P'][a]); ++a) {
2660                                 if (isspace(msg->cm_fields['P'][a])) {
2661                                         msg->cm_fields['P'][a] = ' ';
2662                                 }
2663                         }
2664                 }
2665                 else {
2666                         msg->cm_fields['P'] = strdup("unknown");
2667                 }
2668         }
2669
2670         if (force == NULL) {
2671                 strcpy(force_room, "");
2672         }
2673         else {
2674                 strcpy(force_room, force);
2675         }
2676
2677         /* Learn about what's inside, because it's what's inside that counts */
2678         if (msg->cm_fields['M'] == NULL) {
2679                 CtdlLogPrintf(CTDL_ERR, "ERROR: attempt to save message with NULL body\n");
2680                 return(-2);
2681         }
2682
2683         switch (msg->cm_format_type) {
2684         case 0:
2685                 strcpy(content_type, "text/x-citadel-variformat");
2686                 break;
2687         case 1:
2688                 strcpy(content_type, "text/plain");
2689                 break;
2690         case 4:
2691                 strcpy(content_type, "text/plain");
2692                 mptr = bmstrcasestr(msg->cm_fields['M'], "Content-type:");
2693                 if (mptr != NULL) {
2694                         char *aptr;
2695                         safestrncpy(content_type, &mptr[13], sizeof content_type);
2696                         striplt(content_type);
2697                         aptr = content_type;
2698                         while (!IsEmptyStr(aptr)) {
2699                                 if ((*aptr == ';')
2700                                     || (*aptr == ' ')
2701                                     || (*aptr == 13)
2702                                     || (*aptr == 10)) {
2703                                         *aptr = 0;
2704                                 }
2705                                 else aptr++;
2706                         }
2707                 }
2708         }
2709
2710         /* Goto the correct room */
2711         CtdlLogPrintf(CTDL_DEBUG, "Selected room %s\n", (recps) ? CCC->room.QRname : SENTITEMS);
2712         strcpy(hold_rm, CCC->room.QRname);
2713         strcpy(actual_rm, CCC->room.QRname);
2714         if (recps != NULL) {
2715                 strcpy(actual_rm, SENTITEMS);
2716         }
2717
2718         /* If the user is a twit, move to the twit room for posting */
2719         if (TWITDETECT) {
2720                 if (CCC->user.axlevel == 2) {
2721                         strcpy(hold_rm, actual_rm);
2722                         strcpy(actual_rm, config.c_twitroom);
2723                         CtdlLogPrintf(CTDL_DEBUG, "Diverting to twit room\n");
2724                 }
2725         }
2726
2727         /* ...or if this message is destined for Aide> then go there. */
2728         if (!IsEmptyStr(force_room)) {
2729                 strcpy(actual_rm, force_room);
2730         }
2731
2732         CtdlLogPrintf(CTDL_DEBUG, "Final selection: %s\n", actual_rm);
2733         if (strcasecmp(actual_rm, CCC->room.QRname)) {
2734                 /* getroom(&CCC->room, actual_rm); */
2735                 usergoto(actual_rm, 0, 1, NULL, NULL);
2736         }
2737
2738         /*
2739          * If this message has no O (room) field, generate one.
2740          */
2741         if (msg->cm_fields['O'] == NULL) {
2742                 msg->cm_fields['O'] = strdup(CCC->room.QRname);
2743         }
2744
2745         /* Perform "before save" hooks (aborting if any return nonzero) */
2746         CtdlLogPrintf(CTDL_DEBUG, "Performing before-save hooks\n");
2747         if (PerformMessageHooks(msg, EVT_BEFORESAVE) > 0) return(-3);
2748
2749         /*
2750          * If this message has an Exclusive ID, and the room is replication
2751          * checking enabled, then do replication checks.
2752          */
2753         if (DoesThisRoomNeedEuidIndexing(&CCC->room)) {
2754                 ReplicationChecks(msg);
2755         }
2756
2757         /* Save it to disk */
2758         CtdlLogPrintf(CTDL_DEBUG, "Saving to disk\n");
2759         newmsgid = send_message(msg);
2760         if (newmsgid <= 0L) return(-5);
2761
2762         /* Write a supplemental message info record.  This doesn't have to
2763          * be a critical section because nobody else knows about this message
2764          * yet.
2765          */
2766         CtdlLogPrintf(CTDL_DEBUG, "Creating MetaData record\n");
2767         memset(&smi, 0, sizeof(struct MetaData));
2768         smi.meta_msgnum = newmsgid;
2769         smi.meta_refcount = 0;
2770         safestrncpy(smi.meta_content_type, content_type,
2771                         sizeof smi.meta_content_type);
2772
2773         /*
2774          * Measure how big this message will be when rendered as RFC822.
2775          * We do this for two reasons:
2776          * 1. We need the RFC822 length for the new metadata record, so the
2777          *    POP and IMAP services don't have to calculate message lengths
2778          *    while the user is waiting (multiplied by potentially hundreds
2779          *    or thousands of messages).
2780          * 2. If journaling is enabled, we will need an RFC822 version of the
2781          *    message to attach to the journalized copy.
2782          */
2783         if (CCC->redirect_buffer != NULL) {
2784                 CtdlLogPrintf(CTDL_ALERT, "CCC->redirect_buffer is not NULL during message submission!\n");
2785                 abort();
2786         }
2787         CCC->redirect_buffer = malloc(SIZ);
2788         CCC->redirect_len = 0;
2789         CCC->redirect_alloc = SIZ;
2790         CtdlOutputPreLoadedMsg(msg, MT_RFC822, HEADERS_ALL, 0, 1, QP_EADDR);
2791         smi.meta_rfc822_length = CCC->redirect_len;
2792         saved_rfc822_version = CCC->redirect_buffer;
2793         CCC->redirect_buffer = NULL;
2794         CCC->redirect_len = 0;
2795         CCC->redirect_alloc = 0;
2796
2797         PutMetaData(&smi);
2798
2799         /* Now figure out where to store the pointers */
2800         CtdlLogPrintf(CTDL_DEBUG, "Storing pointers\n");
2801
2802         /* If this is being done by the networker delivering a private
2803          * message, we want to BYPASS saving the sender's copy (because there
2804          * is no local sender; it would otherwise go to the Trashcan).
2805          */
2806         if ((!CCC->internal_pgm) || (recps == NULL)) {
2807                 if (CtdlSaveMsgPointerInRoom(actual_rm, newmsgid, 1, msg) != 0) {
2808                         CtdlLogPrintf(CTDL_ERR, "ERROR saving message pointer!\n");
2809                         CtdlSaveMsgPointerInRoom(config.c_aideroom, newmsgid, 0, msg);
2810                 }
2811         }
2812
2813         /* For internet mail, drop a copy in the outbound queue room */
2814         if ((recps != NULL) && (recps->num_internet > 0)) {
2815                 CtdlSaveMsgPointerInRoom(SMTP_SPOOLOUT_ROOM, newmsgid, 0, msg);
2816         }
2817
2818         /* If other rooms are specified, drop them there too. */
2819         if ((recps != NULL) && (recps->num_room > 0))
2820           for (i=0; i<num_tokens(recps->recp_room, '|'); ++i) {
2821                 extract_token(recipient, recps->recp_room, i,
2822                                         '|', sizeof recipient);
2823                 CtdlLogPrintf(CTDL_DEBUG, "Delivering to room <%s>\n", recipient);
2824                 CtdlSaveMsgPointerInRoom(recipient, newmsgid, 0, msg);
2825         }
2826
2827         /* Bump this user's messages posted counter. */
2828         CtdlLogPrintf(CTDL_DEBUG, "Updating user\n");
2829         lgetuser(&CCC->user, CCC->curr_user);
2830         CCC->user.posted = CCC->user.posted + 1;
2831         lputuser(&CCC->user);
2832
2833         /* Decide where bounces need to be delivered */
2834         if ((recps != NULL) && (recps->bounce_to != NULL)) {
2835                 safestrncpy(bounce_to, recps->bounce_to, sizeof bounce_to);
2836         }
2837         else if (CCC->logged_in) {
2838                 snprintf(bounce_to, sizeof bounce_to, "%s@%s", CCC->user.fullname, config.c_nodename);
2839         }
2840         else {
2841                 snprintf(bounce_to, sizeof bounce_to, "%s@%s", msg->cm_fields['A'], msg->cm_fields['N']);
2842         }
2843
2844         /* If this is private, local mail, make a copy in the
2845          * recipient's mailbox and bump the reference count.
2846          */
2847         if ((recps != NULL) && (recps->num_local > 0))
2848           for (i=0; i<num_tokens(recps->recp_local, '|'); ++i) {
2849                 extract_token(recipient, recps->recp_local, i,
2850                                         '|', sizeof recipient);
2851                 CtdlLogPrintf(CTDL_DEBUG, "Delivering private local mail to <%s>\n",
2852                         recipient);
2853                 if (getuser(&userbuf, recipient) == 0) {
2854                         // Add a flag so the Funambol module knows its mail
2855                         msg->cm_fields['W'] = strdup(recipient);
2856                         MailboxName(actual_rm, sizeof actual_rm, &userbuf, MAILROOM);
2857                         CtdlSaveMsgPointerInRoom(actual_rm, newmsgid, 0, msg);
2858                         BumpNewMailCounter(userbuf.usernum);
2859                         if (!IsEmptyStr(config.c_funambol_host) || !IsEmptyStr(config.c_pager_program)) {
2860                         /* Generate a instruction message for the Funambol notification
2861                          * server, in the same style as the SMTP queue
2862                          */
2863                            instr_alloc = 1024;
2864                            instr = malloc(instr_alloc);
2865                            snprintf(instr, instr_alloc,
2866                         "Content-type: %s\n\nmsgid|%ld\nsubmitted|%ld\n"
2867                         "bounceto|%s\n",
2868                         SPOOLMIME, newmsgid, (long)time(NULL),
2869                         bounce_to
2870                         );
2871
2872                            imsg = malloc(sizeof(struct CtdlMessage));
2873                            memset(imsg, 0, sizeof(struct CtdlMessage));
2874                            imsg->cm_magic = CTDLMESSAGE_MAGIC;
2875                            imsg->cm_anon_type = MES_NORMAL;
2876                            imsg->cm_format_type = FMT_RFC822;
2877                            imsg->cm_fields['A'] = strdup("Citadel");
2878                            imsg->cm_fields['J'] = strdup("do not journal");
2879                            imsg->cm_fields['M'] = instr;        /* imsg owns this memory now */
2880                            imsg->cm_fields['W'] = strdup(recipient);
2881                            CtdlSubmitMsg(imsg, NULL, FNBL_QUEUE_ROOM, 0);
2882                            CtdlFreeMessage(imsg);
2883                         }
2884                 }
2885                 else {
2886                         CtdlLogPrintf(CTDL_DEBUG, "No user <%s>\n", recipient);
2887                         CtdlSaveMsgPointerInRoom(config.c_aideroom,
2888                                 newmsgid, 0, msg);
2889                 }
2890         }
2891
2892         /* Perform "after save" hooks */
2893         CtdlLogPrintf(CTDL_DEBUG, "Performing after-save hooks\n");
2894         PerformMessageHooks(msg, EVT_AFTERSAVE);
2895
2896         /* For IGnet mail, we have to save a new copy into the spooler for
2897          * each recipient, with the R and D fields set to the recipient and
2898          * destination-node.  This has two ugly side effects: all other
2899          * recipients end up being unlisted in this recipient's copy of the
2900          * message, and it has to deliver multiple messages to the same
2901          * node.  We'll revisit this again in a year or so when everyone has
2902          * a network spool receiver that can handle the new style messages.
2903          */
2904         if ((recps != NULL) && (recps->num_ignet > 0))
2905           for (i=0; i<num_tokens(recps->recp_ignet, '|'); ++i) {
2906                 extract_token(recipient, recps->recp_ignet, i,
2907                                 '|', sizeof recipient);
2908
2909                 hold_R = msg->cm_fields['R'];
2910                 hold_D = msg->cm_fields['D'];
2911                 msg->cm_fields['R'] = malloc(SIZ);
2912                 msg->cm_fields['D'] = malloc(128);
2913                 extract_token(msg->cm_fields['R'], recipient, 0, '@', SIZ);
2914                 extract_token(msg->cm_fields['D'], recipient, 1, '@', 128);
2915
2916                 serialize_message(&smr, msg);
2917                 if (smr.len > 0) {
2918                         snprintf(submit_filename, sizeof submit_filename,
2919                                          "%s/netmail.%04lx.%04x.%04x",
2920                                          ctdl_netin_dir,
2921                                          (long) getpid(), CCC->cs_pid, ++seqnum);
2922                         network_fp = fopen(submit_filename, "wb+");
2923                         if (network_fp != NULL) {
2924                                 fwrite(smr.ser, smr.len, 1, network_fp);
2925                                 fclose(network_fp);
2926                         }
2927                         free(smr.ser);
2928                 }
2929
2930                 free(msg->cm_fields['R']);
2931                 free(msg->cm_fields['D']);
2932                 msg->cm_fields['R'] = hold_R;
2933                 msg->cm_fields['D'] = hold_D;
2934         }
2935
2936         /* Go back to the room we started from */
2937         CtdlLogPrintf(CTDL_DEBUG, "Returning to original room %s\n", hold_rm);
2938         if (strcasecmp(hold_rm, CCC->room.QRname))
2939                 usergoto(hold_rm, 0, 1, NULL, NULL);
2940
2941         /* For internet mail, generate delivery instructions.
2942          * Yes, this is recursive.  Deal with it.  Infinite recursion does
2943          * not happen because the delivery instructions message does not
2944          * contain a recipient.
2945          */
2946         if ((recps != NULL) && (recps->num_internet > 0)) {
2947                 CtdlLogPrintf(CTDL_DEBUG, "Generating delivery instructions\n");
2948                 instr_alloc = 1024;
2949                 instr = malloc(instr_alloc);
2950                 snprintf(instr, instr_alloc,
2951                         "Content-type: %s\n\nmsgid|%ld\nsubmitted|%ld\n"
2952                         "bounceto|%s\n",
2953                         SPOOLMIME, newmsgid, (long)time(NULL),
2954                         bounce_to
2955                 );
2956
2957                 if (recps->envelope_from != NULL) {
2958                         tmp = strlen(instr);
2959                         snprintf(&instr[tmp], instr_alloc-tmp, "envelope_from|%s\n", recps->envelope_from);
2960                 }
2961
2962                 for (i=0; i<num_tokens(recps->recp_internet, '|'); ++i) {
2963                         tmp = strlen(instr);
2964                         extract_token(recipient, recps->recp_internet, i, '|', sizeof recipient);
2965                         if ((tmp + strlen(recipient) + 32) > instr_alloc) {
2966                                 instr_alloc = instr_alloc * 2;
2967                                 instr = realloc(instr, instr_alloc);
2968                         }
2969                         snprintf(&instr[tmp], instr_alloc - tmp, "remote|%s|0||\n", recipient);
2970                 }
2971
2972                 imsg = malloc(sizeof(struct CtdlMessage));
2973                 memset(imsg, 0, sizeof(struct CtdlMessage));
2974                 imsg->cm_magic = CTDLMESSAGE_MAGIC;
2975                 imsg->cm_anon_type = MES_NORMAL;
2976                 imsg->cm_format_type = FMT_RFC822;
2977                 imsg->cm_fields['A'] = strdup("Citadel");
2978                 imsg->cm_fields['J'] = strdup("do not journal");
2979                 imsg->cm_fields['M'] = instr;   /* imsg owns this memory now */
2980                 CtdlSubmitMsg(imsg, NULL, SMTP_SPOOLOUT_ROOM, QP_EADDR);
2981                 CtdlFreeMessage(imsg);
2982         }
2983
2984         /*
2985          * Any addresses to harvest for someone's address book?
2986          */
2987         if ( (CCC->logged_in) && (recps != NULL) ) {
2988                 collected_addresses = harvest_collected_addresses(msg);
2989         }
2990
2991         if (collected_addresses != NULL) {
2992                 aptr = (struct addresses_to_be_filed *)
2993                         malloc(sizeof(struct addresses_to_be_filed));
2994                 MailboxName(actual_rm, sizeof actual_rm,
2995                         &CCC->user, USERCONTACTSROOM);
2996                 aptr->roomname = strdup(actual_rm);
2997                 aptr->collected_addresses = collected_addresses;
2998                 begin_critical_section(S_ATBF);
2999                 aptr->next = atbf;
3000                 atbf = aptr;
3001                 end_critical_section(S_ATBF);
3002         }
3003
3004         /*
3005          * Determine whether this message qualifies for journaling.
3006          */
3007         if (msg->cm_fields['J'] != NULL) {
3008                 qualified_for_journaling = 0;
3009         }
3010         else {
3011                 if (recps == NULL) {
3012                         qualified_for_journaling = config.c_journal_pubmsgs;
3013                 }
3014                 else if (recps->num_local + recps->num_ignet + recps->num_internet > 0) {
3015                         qualified_for_journaling = config.c_journal_email;
3016                 }
3017                 else {
3018                         qualified_for_journaling = config.c_journal_pubmsgs;
3019                 }
3020         }
3021
3022         /*
3023          * Do we have to perform journaling?  If so, hand off the saved
3024          * RFC822 version will be handed off to the journaler for background
3025          * submit.  Otherwise, we have to free the memory ourselves.
3026          */
3027         if (saved_rfc822_version != NULL) {
3028                 if (qualified_for_journaling) {
3029                         JournalBackgroundSubmit(msg, saved_rfc822_version, recps);
3030                 }
3031                 else {
3032                         free(saved_rfc822_version);
3033                 }
3034         }
3035
3036         /* Done. */
3037         return(newmsgid);
3038 }
3039
3040
3041
3042
3043
3044 /*
3045  * Convenience function for generating small administrative messages.
3046  */
3047 void quickie_message(const char *from, const char *fromaddr, char *to, char *room, const char *text,
3048                         int format_type, const char *subject)
3049 {
3050         struct CtdlMessage *msg;
3051         struct recptypes *recp = NULL;
3052
3053         msg = malloc(sizeof(struct CtdlMessage));
3054         memset(msg, 0, sizeof(struct CtdlMessage));
3055         msg->cm_magic = CTDLMESSAGE_MAGIC;
3056         msg->cm_anon_type = MES_NORMAL;
3057         msg->cm_format_type = format_type;
3058
3059         if (from != NULL) {
3060                 msg->cm_fields['A'] = strdup(from);
3061         }
3062         else if (fromaddr != NULL) {
3063                 msg->cm_fields['A'] = strdup(fromaddr);
3064                 if (strchr(msg->cm_fields['A'], '@')) {
3065                         *strchr(msg->cm_fields['A'], '@') = 0;
3066                 }
3067         }
3068         else {
3069                 msg->cm_fields['A'] = strdup("Citadel");
3070         }
3071
3072         if (fromaddr != NULL) msg->cm_fields['F'] = strdup(fromaddr);
3073         if (room != NULL) msg->cm_fields['O'] = strdup(room);
3074         msg->cm_fields['N'] = strdup(NODENAME);
3075         if (to != NULL) {
3076                 msg->cm_fields['R'] = strdup(to);
3077                 recp = validate_recipients(to, NULL, 0);
3078         }
3079         if (subject != NULL) {
3080                 msg->cm_fields['U'] = strdup(subject);
3081         }
3082         msg->cm_fields['M'] = strdup(text);
3083
3084         CtdlSubmitMsg(msg, recp, room, 0);
3085         CtdlFreeMessage(msg);
3086         if (recp != NULL) free_recipients(recp);
3087 }
3088
3089
3090
3091 /*
3092  * Back end function used by CtdlMakeMessage() and similar functions
3093  */
3094 char *CtdlReadMessageBody(char *terminator,     /* token signalling EOT */
3095                         size_t maxlen,          /* maximum message length */
3096                         char *exist,            /* if non-null, append to it;
3097                                                    exist is ALWAYS freed  */
3098                         int crlf,               /* CRLF newlines instead of LF */
3099                         int sock                /* socket handle or 0 for this session's client socket */
3100                         ) {
3101         char buf[1024];
3102         int linelen;
3103         size_t message_len = 0;
3104         size_t buffer_len = 0;
3105         char *ptr;
3106         char *m;
3107         int flushing = 0;
3108         int finished = 0;
3109         int dotdot = 0;
3110
3111         if (exist == NULL) {
3112                 m = malloc(4096);
3113                 m[0] = 0;
3114                 buffer_len = 4096;
3115                 message_len = 0;
3116         }
3117         else {
3118                 message_len = strlen(exist);
3119                 buffer_len = message_len + 4096;
3120                 m = realloc(exist, buffer_len);
3121                 if (m == NULL) {
3122                         free(exist);
3123                         return m;
3124                 }
3125         }
3126
3127         /* Do we need to change leading ".." to "." for SMTP escaping? */
3128         if (!strcmp(terminator, ".")) {
3129                 dotdot = 1;
3130         }
3131
3132         /* flush the input if we have nowhere to store it */
3133         if (m == NULL) {
3134                 flushing = 1;
3135         }
3136
3137         /* read in the lines of message text one by one */
3138         do {
3139                 if (sock > 0) {
3140                         if (sock_getln(sock, buf, (sizeof buf - 3)) < 0) finished = 1;
3141                 }
3142                 else {
3143                         if (client_getln(buf, (sizeof buf - 3)) < 1) finished = 1;
3144                 }
3145                 if (!strcmp(buf, terminator)) finished = 1;
3146                 if (crlf) {
3147                         strcat(buf, "\r\n");
3148                 }
3149                 else {
3150                         strcat(buf, "\n");
3151                 }
3152
3153                 /* Unescape SMTP-style input of two dots at the beginning of the line */
3154                 if (dotdot) {
3155                         if (!strncmp(buf, "..", 2)) {
3156                                 strcpy(buf, &buf[1]);
3157                         }
3158                 }
3159
3160                 if ( (!flushing) && (!finished) ) {
3161                         /* Measure the line */
3162                         linelen = strlen(buf);
3163
3164                         /* augment the buffer if we have to */
3165                         if ((message_len + linelen) >= buffer_len) {
3166                                 ptr = realloc(m, (buffer_len * 2) );
3167                                 if (ptr == NULL) {      /* flush if can't allocate */
3168                                         flushing = 1;
3169                                 } else {
3170                                         buffer_len = (buffer_len * 2);
3171                                         m = ptr;
3172                                         CtdlLogPrintf(CTDL_DEBUG, "buffer_len is now %ld\n", (long)buffer_len);
3173                                 }
3174                         }
3175
3176                         /* Add the new line to the buffer.  NOTE: this loop must avoid
3177                         * using functions like strcat() and strlen() because they
3178                         * traverse the entire buffer upon every call, and doing that
3179                         * for a multi-megabyte message slows it down beyond usability.
3180                         */
3181                         strcpy(&m[message_len], buf);
3182                         message_len += linelen;
3183                 }
3184
3185                 /* if we've hit the max msg length, flush the rest */
3186                 if (message_len >= maxlen) flushing = 1;
3187
3188         } while (!finished);
3189         return(m);
3190 }
3191
3192
3193
3194
3195 /*
3196  * Build a binary message to be saved on disk.
3197  * (NOTE: if you supply 'preformatted_text', the buffer you give it
3198  * will become part of the message.  This means you are no longer
3199  * responsible for managing that memory -- it will be freed along with
3200  * the rest of the fields when CtdlFreeMessage() is called.)
3201  */
3202
3203 struct CtdlMessage *CtdlMakeMessage(
3204         struct ctdluser *author,        /* author's user structure */
3205         char *recipient,                /* NULL if it's not mail */
3206         char *recp_cc,                  /* NULL if it's not mail */
3207         char *room,                     /* room where it's going */
3208         int type,                       /* see MES_ types in header file */
3209         int format_type,                /* variformat, plain text, MIME... */
3210         char *fake_name,                /* who we're masquerading as */
3211         char *my_email,                 /* which of my email addresses to use (empty is ok) */
3212         char *subject,                  /* Subject (optional) */
3213         char *supplied_euid,            /* ...or NULL if this is irrelevant */
3214         char *preformatted_text,        /* ...or NULL to read text from client */
3215         char *references                /* Thread references */
3216 ) {
3217         char dest_node[256];
3218         char buf[1024];
3219         struct CtdlMessage *msg;
3220
3221         msg = malloc(sizeof(struct CtdlMessage));
3222         memset(msg, 0, sizeof(struct CtdlMessage));
3223         msg->cm_magic = CTDLMESSAGE_MAGIC;
3224         msg->cm_anon_type = type;
3225         msg->cm_format_type = format_type;
3226
3227         /* Don't confuse the poor folks if it's not routed mail. */
3228         strcpy(dest_node, "");
3229
3230         if (recipient != NULL) striplt(recipient);
3231         if (recp_cc != NULL) striplt(recp_cc);
3232
3233         /* Path or Return-Path */
3234         if (my_email == NULL) my_email = "";
3235
3236         if (!IsEmptyStr(my_email)) {
3237                 msg->cm_fields['P'] = strdup(my_email);
3238         }
3239         else {
3240                 snprintf(buf, sizeof buf, "%s", author->fullname);
3241                 msg->cm_fields['P'] = strdup(buf);
3242         }
3243         convert_spaces_to_underscores(msg->cm_fields['P']);
3244
3245         snprintf(buf, sizeof buf, "%ld", (long)time(NULL));     /* timestamp */
3246         msg->cm_fields['T'] = strdup(buf);
3247
3248         if ((fake_name != NULL) && (fake_name[0])) {            /* author */
3249                 msg->cm_fields['A'] = strdup(fake_name);
3250         }
3251         else {
3252                 msg->cm_fields['A'] = strdup(author->fullname);
3253         }
3254
3255         if (CC->room.QRflags & QR_MAILBOX) {            /* room */
3256                 msg->cm_fields['O'] = strdup(&CC->room.QRname[11]);
3257         }
3258         else {
3259                 msg->cm_fields['O'] = strdup(CC->room.QRname);
3260         }
3261
3262         msg->cm_fields['N'] = strdup(NODENAME);         /* nodename */
3263         msg->cm_fields['H'] = strdup(HUMANNODE);                /* hnodename */
3264
3265         if ((recipient != NULL) && (recipient[0] != 0)) {
3266                 msg->cm_fields['R'] = strdup(recipient);
3267         }
3268         if ((recp_cc != NULL) && (recp_cc[0] != 0)) {
3269                 msg->cm_fields['Y'] = strdup(recp_cc);
3270         }
3271         if (dest_node[0] != 0) {
3272                 msg->cm_fields['D'] = strdup(dest_node);
3273         }
3274
3275         if (!IsEmptyStr(my_email)) {
3276                 msg->cm_fields['F'] = strdup(my_email);
3277         }
3278         else if ( (author == &CC->user) && (!IsEmptyStr(CC->cs_inet_email)) ) {
3279                 msg->cm_fields['F'] = strdup(CC->cs_inet_email);
3280         }
3281
3282         if (subject != NULL) {
3283                 long length;
3284                 striplt(subject);
3285                 length = strlen(subject);
3286                 if (length > 0) {
3287                         long i;
3288                         long IsAscii;
3289                         IsAscii = -1;
3290                         i = 0;
3291                         while ((subject[i] != '\0') &&
3292                                (IsAscii = isascii(subject[i]) != 0 ))
3293                                 i++;
3294                         if (IsAscii != 0)
3295                                 msg->cm_fields['U'] = strdup(subject);
3296                         else /* ok, we've got utf8 in the string. */
3297                         {
3298                                 msg->cm_fields['U'] = rfc2047encode(subject, length);
3299                         }
3300
3301                 }
3302         }
3303
3304         if (supplied_euid != NULL) {
3305                 msg->cm_fields['E'] = strdup(supplied_euid);
3306         }
3307
3308         if (references != NULL) {
3309                 if (!IsEmptyStr(references)) {
3310                         msg->cm_fields['W'] = strdup(references);
3311                 }
3312         }
3313
3314         if (preformatted_text != NULL) {
3315                 msg->cm_fields['M'] = preformatted_text;
3316         }
3317         else {
3318                 msg->cm_fields['M'] = CtdlReadMessageBody("000", config.c_maxmsglen, NULL, 0, 0);
3319         }
3320
3321         return(msg);
3322 }
3323
3324
3325 /*
3326  * Check to see whether we have permission to post a message in the current
3327  * room.  Returns a *CITADEL ERROR CODE* and puts a message in errmsgbuf, or
3328  * returns 0 on success.
3329  */
3330 int CtdlDoIHavePermissionToPostInThisRoom(char *errmsgbuf,
3331                                           size_t n,
3332                                           const char* RemoteIdentifier,
3333                                           int PostPublic) {
3334         int ra;
3335
3336         if (!(CC->logged_in) &&
3337             (PostPublic == POST_LOGGED_IN)) {
3338                 snprintf(errmsgbuf, n, "Not logged in.");
3339                 return (ERROR + NOT_LOGGED_IN);
3340         }
3341         else if (PostPublic == CHECK_EXISTANCE) {
3342                 return (0); // We're Evaling whether a recipient exists
3343         }
3344         else if (!(CC->logged_in)) {
3345
3346                 if ((CC->room.QRflags & QR_READONLY)) {
3347                         snprintf(errmsgbuf, n, "Not logged in.");
3348                         return (ERROR + NOT_LOGGED_IN);
3349                 }
3350                 if (CC->room.QRflags2 & QR2_MODERATED) {
3351                         snprintf(errmsgbuf, n, "Not logged in Moderation feature not yet implemented!");
3352                         return (ERROR + NOT_LOGGED_IN);
3353                 }
3354                 if ((PostPublic!=POST_LMTP) &&(CC->room.QRflags2 & QR2_SMTP_PUBLIC) == 0) {
3355                         SpoolControl *sc;
3356                         char filename[SIZ];
3357                         int found;
3358
3359                         if (RemoteIdentifier == NULL)
3360                         {
3361                                 snprintf(errmsgbuf, n, "Need sender to permit access.");
3362                                 return (ERROR + USERNAME_REQUIRED);
3363                         }
3364
3365                         assoc_file_name(filename, sizeof filename, &CC->room, ctdl_netcfg_dir);
3366                         begin_critical_section(S_NETCONFIGS);
3367                         if (!read_spoolcontrol_file(&sc, filename))
3368                         {
3369                                 end_critical_section(S_NETCONFIGS);
3370                                 snprintf(errmsgbuf, n,
3371                                         "This mailing list only accepts posts from subscribers.");
3372                                 return (ERROR + NO_SUCH_USER);
3373                         }
3374                         end_critical_section(S_NETCONFIGS);
3375                         found = is_recipient (sc, RemoteIdentifier);
3376                         free_spoolcontrol_struct(&sc);
3377                         if (found) {
3378                                 return (0);
3379                         }
3380                         else {
3381                                 snprintf(errmsgbuf, n,
3382                                         "This mailing list only accepts posts from subscribers.");
3383                                 return (ERROR + NO_SUCH_USER);
3384                         }
3385                 }
3386                 return (0);
3387
3388         }
3389
3390         if ((CC->user.axlevel < 2)
3391             && ((CC->room.QRflags & QR_MAILBOX) == 0)) {
3392                 snprintf(errmsgbuf, n, "Need to be validated to enter "
3393                                 "(except in %s> to sysop)", MAILROOM);
3394                 return (ERROR + HIGHER_ACCESS_REQUIRED);
3395         }
3396
3397         CtdlRoomAccess(&CC->room, &CC->user, &ra, NULL);
3398         if (!(ra & UA_POSTALLOWED)) {
3399                 snprintf(errmsgbuf, n, "Higher access is required to post in this room.");
3400                 return (ERROR + HIGHER_ACCESS_REQUIRED);
3401         }
3402
3403         strcpy(errmsgbuf, "Ok");
3404         return(0);
3405 }
3406
3407
3408 /*
3409  * Check to see if the specified user has Internet mail permission
3410  * (returns nonzero if permission is granted)
3411  */
3412 int CtdlCheckInternetMailPermission(struct ctdluser *who) {
3413
3414         /* Do not allow twits to send Internet mail */
3415         if (who->axlevel <= 2) return(0);
3416
3417         /* Globally enabled? */
3418         if (config.c_restrict == 0) return(1);
3419
3420         /* User flagged ok? */
3421         if (who->flags & US_INTERNET) return(2);
3422
3423         /* Aide level access? */
3424         if (who->axlevel >= 6) return(3);
3425
3426         /* No mail for you! */
3427         return(0);
3428 }
3429
3430
3431 /*
3432  * Validate recipients, count delivery types and errors, and handle aliasing
3433  * FIXME check for dupes!!!!!
3434  *
3435  * Returns 0 if all addresses are ok, ret->num_error = -1 if no addresses
3436  * were specified, or the number of addresses found invalid.
3437  *
3438  * Caller needs to free the result using free_recipients()
3439  */
3440 struct recptypes *validate_recipients(char *supplied_recipients,
3441                                       const char *RemoteIdentifier,
3442                                       int Flags) {
3443         struct recptypes *ret;
3444         char *recipients = NULL;
3445         char this_recp[256];
3446         char this_recp_cooked[256];
3447         char append[SIZ];
3448         int num_recps = 0;
3449         int i, j;
3450         int mailtype;
3451         int invalid;
3452         struct ctdluser tempUS;
3453         struct ctdlroom tempQR;
3454         struct ctdlroom tempQR2;
3455         int err = 0;
3456         char errmsg[SIZ];
3457         int in_quotes = 0;
3458
3459         /* Initialize */
3460         ret = (struct recptypes *) malloc(sizeof(struct recptypes));
3461         if (ret == NULL) return(NULL);
3462
3463         /* Set all strings to null and numeric values to zero */
3464         memset(ret, 0, sizeof(struct recptypes));
3465
3466         if (supplied_recipients == NULL) {
3467                 recipients = strdup("");
3468         }
3469         else {
3470                 recipients = strdup(supplied_recipients);
3471         }
3472
3473         /* Allocate some memory.  Yes, this allocates 500% more memory than we will
3474          * actually need, but it's healthier for the heap than doing lots of tiny
3475          * realloc() calls instead.
3476          */
3477
3478         ret->errormsg = malloc(strlen(recipients) + 1024);
3479         ret->recp_local = malloc(strlen(recipients) + 1024);
3480         ret->recp_internet = malloc(strlen(recipients) + 1024);
3481         ret->recp_ignet = malloc(strlen(recipients) + 1024);
3482         ret->recp_room = malloc(strlen(recipients) + 1024);
3483         ret->display_recp = malloc(strlen(recipients) + 1024);
3484
3485         ret->errormsg[0] = 0;
3486         ret->recp_local[0] = 0;
3487         ret->recp_internet[0] = 0;
3488         ret->recp_ignet[0] = 0;
3489         ret->recp_room[0] = 0;
3490         ret->display_recp[0] = 0;
3491
3492         ret->recptypes_magic = RECPTYPES_MAGIC;
3493
3494         /* Change all valid separator characters to commas */
3495         for (i=0; !IsEmptyStr(&recipients[i]); ++i) {
3496                 if ((recipients[i] == ';') || (recipients[i] == '|')) {
3497                         recipients[i] = ',';
3498                 }
3499         }
3500
3501         /* Now start extracting recipients... */
3502
3503         while (!IsEmptyStr(recipients)) {
3504
3505                 for (i=0; i<=strlen(recipients); ++i) {
3506                         if (recipients[i] == '\"') in_quotes = 1 - in_quotes;
3507                         if ( ( (recipients[i] == ',') && (!in_quotes) ) || (recipients[i] == 0) ) {
3508                                 safestrncpy(this_recp, recipients, i+1);
3509                                 this_recp[i] = 0;
3510                                 if (recipients[i] == ',') {
3511                                         strcpy(recipients, &recipients[i+1]);
3512                                 }
3513                                 else {
3514                                         strcpy(recipients, "");
3515                                 }
3516                                 break;
3517                         }
3518                 }
3519
3520                 striplt(this_recp);
3521                 if (IsEmptyStr(this_recp))
3522                         break;
3523                 CtdlLogPrintf(CTDL_DEBUG, "Evaluating recipient #%d: %s\n", num_recps, this_recp);
3524                 ++num_recps;
3525                 mailtype = alias(this_recp);
3526                 mailtype = alias(this_recp);
3527                 mailtype = alias(this_recp);
3528                 j = 0;
3529                 for (j=0; !IsEmptyStr(&this_recp[j]); ++j) {
3530                         if (this_recp[j]=='_') {
3531                                 this_recp_cooked[j] = ' ';
3532                         }
3533                         else {
3534                                 this_recp_cooked[j] = this_recp[j];
3535                         }
3536                 }
3537                 this_recp_cooked[j] = '\0';
3538                 invalid = 0;
3539                 errmsg[0] = 0;
3540                 switch(mailtype) {
3541                         case MES_LOCAL:
3542                                 if (!strcasecmp(this_recp, "sysop")) {
3543                                         ++ret->num_room;
3544                                         strcpy(this_recp, config.c_aideroom);
3545                                         if (!IsEmptyStr(ret->recp_room)) {
3546                                                 strcat(ret->recp_room, "|");
3547                                         }
3548                                         strcat(ret->recp_room, this_recp);
3549                                 }
3550                                 else if ( (!strncasecmp(this_recp, "room_", 5))
3551                                       && (!getroom(&tempQR, &this_recp_cooked[5])) ) {
3552
3553                                         /* Save room so we can restore it later */
3554                                         tempQR2 = CC->room;
3555                                         CC->room = tempQR;
3556
3557                                         /* Check permissions to send mail to this room */
3558                                         err = CtdlDoIHavePermissionToPostInThisRoom(errmsg,
3559                                                                                     sizeof errmsg,
3560                                                                                     RemoteIdentifier,
3561                                                                                     Flags
3562                                         );
3563                                         if (err)
3564                                         {
3565                                                 ++ret->num_error;
3566                                                 invalid = 1;
3567                                         }
3568                                         else {
3569                                                 ++ret->num_room;
3570                                                 if (!IsEmptyStr(ret->recp_room)) {
3571                                                         strcat(ret->recp_room, "|");
3572                                                 }
3573                                                 strcat(ret->recp_room, &this_recp_cooked[5]);
3574                                         }
3575
3576                                         /* Restore room in case something needs it */
3577                                         CC->room = tempQR2;
3578
3579                                 }
3580                                 else if (getuser(&tempUS, this_recp) == 0) {
3581                                         ++ret->num_local;
3582                                         strcpy(this_recp, tempUS.fullname);
3583                                         if (!IsEmptyStr(ret->recp_local)) {
3584                                                 strcat(ret->recp_local, "|");
3585                                         }
3586                                         strcat(ret->recp_local, this_recp);
3587                                 }
3588                                 else if (getuser(&tempUS, this_recp_cooked) == 0) {
3589                                         ++ret->num_local;
3590                                         strcpy(this_recp, tempUS.fullname);
3591                                         if (!IsEmptyStr(ret->recp_local)) {
3592                                                 strcat(ret->recp_local, "|");
3593                                         }
3594                                         strcat(ret->recp_local, this_recp);
3595                                 }
3596                                 else {
3597                                         ++ret->num_error;
3598                                         invalid = 1;
3599                                 }
3600                                 break;
3601                         case MES_INTERNET:
3602                                 /* Yes, you're reading this correctly: if the target
3603                                  * domain points back to the local system or an attached
3604                                  * Citadel directory, the address is invalid.  That's
3605                                  * because if the address were valid, we would have
3606                                  * already translated it to a local address by now.
3607                                  */
3608                                 if (IsDirectory(this_recp, 0)) {
3609                                         ++ret->num_error;
3610                                         invalid = 1;
3611                                 }
3612                                 else {
3613                                         ++ret->num_internet;
3614                                         if (!IsEmptyStr(ret->recp_internet)) {
3615                                                 strcat(ret->recp_internet, "|");
3616                                         }
3617                                         strcat(ret->recp_internet, this_recp);
3618                                 }
3619                                 break;
3620                         case MES_IGNET:
3621                                 ++ret->num_ignet;
3622                                 if (!IsEmptyStr(ret->recp_ignet)) {
3623                                         strcat(ret->recp_ignet, "|");
3624                                 }
3625                                 strcat(ret->recp_ignet, this_recp);
3626                                 break;
3627                         case MES_ERROR:
3628                                 ++ret->num_error;
3629                                 invalid = 1;
3630                                 break;
3631                 }
3632                 if (invalid) {
3633                         if (IsEmptyStr(errmsg)) {
3634                                 snprintf(append, sizeof append, "Invalid recipient: %s", this_recp);
3635                         }
3636                         else {
3637                                 snprintf(append, sizeof append, "%s", errmsg);
3638                         }
3639                         if ( (strlen(ret->errormsg) + strlen(append) + 3) < SIZ) {
3640                                 if (!IsEmptyStr(ret->errormsg)) {
3641                                         strcat(ret->errormsg, "; ");
3642                                 }
3643                                 strcat(ret->errormsg, append);
3644                         }
3645                 }
3646                 else {
3647                         if (IsEmptyStr(ret->display_recp)) {
3648                                 strcpy(append, this_recp);
3649                         }
3650                         else {
3651                                 snprintf(append, sizeof append, ", %s", this_recp);
3652                         }
3653                         if ( (strlen(ret->display_recp)+strlen(append)) < SIZ) {
3654                                 strcat(ret->display_recp, append);
3655                         }
3656                 }
3657         }
3658
3659         if ((ret->num_local + ret->num_internet + ret->num_ignet +
3660            ret->num_room + ret->num_error) == 0) {
3661                 ret->num_error = (-1);
3662                 strcpy(ret->errormsg, "No recipients specified.");
3663         }
3664
3665         CtdlLogPrintf(CTDL_DEBUG, "validate_recipients()\n");
3666         CtdlLogPrintf(CTDL_DEBUG, " local: %d <%s>\n", ret->num_local, ret->recp_local);
3667         CtdlLogPrintf(CTDL_DEBUG, "  room: %d <%s>\n", ret->num_room, ret->recp_room);
3668         CtdlLogPrintf(CTDL_DEBUG, "  inet: %d <%s>\n", ret->num_internet, ret->recp_internet);
3669         CtdlLogPrintf(CTDL_DEBUG, " ignet: %d <%s>\n", ret->num_ignet, ret->recp_ignet);
3670         CtdlLogPrintf(CTDL_DEBUG, " error: %d <%s>\n", ret->num_error, ret->errormsg);
3671
3672         free(recipients);
3673         return(ret);
3674 }
3675
3676
3677 /*
3678  * Destructor for struct recptypes
3679  */
3680 void free_recipients(struct recptypes *valid) {
3681
3682         if (valid == NULL) {
3683                 return;
3684         }
3685
3686         if (valid->recptypes_magic != RECPTYPES_MAGIC) {
3687                 CtdlLogPrintf(CTDL_EMERG, "Attempt to call free_recipients() on some other data type!\n");
3688                 abort();
3689         }
3690
3691         if (valid->errormsg != NULL)            free(valid->errormsg);
3692         if (valid->recp_local != NULL)          free(valid->recp_local);
3693         if (valid->recp_internet != NULL)       free(valid->recp_internet);
3694         if (valid->recp_ignet != NULL)          free(valid->recp_ignet);
3695         if (valid->recp_room != NULL)           free(valid->recp_room);
3696         if (valid->display_recp != NULL)        free(valid->display_recp);
3697         if (valid->bounce_to != NULL)           free(valid->bounce_to);
3698         if (valid->envelope_from != NULL)       free(valid->envelope_from);
3699         free(valid);
3700 }
3701
3702
3703
3704 /*
3705  * message entry  -  mode 0 (normal)
3706  */
3707 void cmd_ent0(char *entargs)
3708 {
3709         int post = 0;
3710         char recp[SIZ];
3711         char cc[SIZ];
3712         char bcc[SIZ];
3713         char supplied_euid[128];
3714         int anon_flag = 0;
3715         int format_type = 0;
3716         char newusername[256];
3717         char newuseremail[256];
3718         struct CtdlMessage *msg;
3719         int anonymous = 0;
3720         char errmsg[SIZ];
3721         int err = 0;
3722         struct recptypes *valid = NULL;
3723         struct recptypes *valid_to = NULL;
3724         struct recptypes *valid_cc = NULL;
3725         struct recptypes *valid_bcc = NULL;
3726         char subject[SIZ];
3727         int subject_required = 0;
3728         int do_confirm = 0;
3729         long msgnum;
3730         int i, j;
3731         char buf[256];
3732         int newuseremail_ok = 0;
3733         char references[SIZ];
3734         char *ptr;
3735
3736         unbuffer_output();
3737
3738         post = extract_int(entargs, 0);
3739         extract_token(recp, entargs, 1, '|', sizeof recp);
3740         anon_flag = extract_int(entargs, 2);
3741         format_type = extract_int(entargs, 3);
3742         extract_token(subject, entargs, 4, '|', sizeof subject);
3743         extract_token(newusername, entargs, 5, '|', sizeof newusername);
3744         do_confirm = extract_int(entargs, 6);
3745         extract_token(cc, entargs, 7, '|', sizeof cc);
3746         extract_token(bcc, entargs, 8, '|', sizeof bcc);
3747         switch(CC->room.QRdefaultview) {
3748                 case VIEW_NOTES:
3749                 case VIEW_WIKI:
3750                         extract_token(supplied_euid, entargs, 9, '|', sizeof supplied_euid);
3751                         break;
3752                 default:
3753                         supplied_euid[0] = 0;
3754                         break;
3755         }
3756         extract_token(newuseremail, entargs, 10, '|', sizeof newuseremail);
3757         extract_token(references, entargs, 11, '|', sizeof references);
3758         for (ptr=references; *ptr != 0; ++ptr) {
3759                 if (*ptr == '!') *ptr = '|';
3760         }
3761
3762         /* first check to make sure the request is valid. */
3763
3764         err = CtdlDoIHavePermissionToPostInThisRoom(errmsg, sizeof errmsg, NULL, POST_LOGGED_IN);
3765         if (err)
3766         {
3767                 cprintf("%d %s\n", err, errmsg);
3768                 return;
3769         }
3770
3771         /* Check some other permission type things. */
3772
3773         if (IsEmptyStr(newusername)) {
3774                 strcpy(newusername, CC->user.fullname);
3775         }
3776         if (  (CC->user.axlevel < 6)
3777            && (strcasecmp(newusername, CC->user.fullname))
3778            && (strcasecmp(newusername, CC->cs_inet_fn))
3779         ) {
3780                 cprintf("%d You don't have permission to author messages as '%s'.\n",
3781                         ERROR + HIGHER_ACCESS_REQUIRED,
3782                         newusername
3783                 );
3784                 return;
3785         }
3786
3787
3788         if (IsEmptyStr(newuseremail)) {
3789                 newuseremail_ok = 1;
3790         }
3791
3792         if (!IsEmptyStr(newuseremail)) {
3793                 if (!strcasecmp(newuseremail, CC->cs_inet_email)) {
3794                         newuseremail_ok = 1;
3795                 }
3796                 else if (!IsEmptyStr(CC->cs_inet_other_emails)) {
3797                         j = num_tokens(CC->cs_inet_other_emails, '|');
3798                         for (i=0; i<j; ++i) {
3799                                 extract_token(buf, CC->cs_inet_other_emails, i, '|', sizeof buf);
3800                                 if (!strcasecmp(newuseremail, buf)) {
3801                                         newuseremail_ok = 1;
3802                                 }
3803                         }
3804                 }
3805         }
3806
3807         if (!newuseremail_ok) {
3808                 cprintf("%d You don't have permission to author messages as '%s'.\n",
3809                         ERROR + HIGHER_ACCESS_REQUIRED,
3810                         newuseremail
3811                 );
3812                 return;
3813         }
3814
3815         CC->cs_flags |= CS_POSTING;
3816
3817         /* In mailbox rooms we have to behave a little differently --
3818          * make sure the user has specified at least one recipient.  Then
3819          * validate the recipient(s).  We do this for the Mail> room, as
3820          * well as any room which has the "Mailbox" view set.
3821          */
3822
3823         if (  ( (CC->room.QRflags & QR_MAILBOX) && (!strcasecmp(&CC->room.QRname[11], MAILROOM)) )
3824            || ( (CC->room.QRflags & QR_MAILBOX) && (CC->curr_view == VIEW_MAILBOX) )
3825         ) {
3826                 if (CC->user.axlevel < 2) {
3827                         strcpy(recp, "sysop");
3828                         strcpy(cc, "");
3829                         strcpy(bcc, "");
3830                 }
3831
3832                 valid_to = validate_recipients(recp, NULL, 0);
3833                 if (valid_to->num_error > 0) {
3834                         cprintf("%d %s\n", ERROR + NO_SUCH_USER, valid_to->errormsg);
3835                         free_recipients(valid_to);
3836                         return;
3837                 }
3838
3839                 valid_cc = validate_recipients(cc, NULL, 0);
3840                 if (valid_cc->num_error > 0) {
3841                         cprintf("%d %s\n", ERROR + NO_SUCH_USER, valid_cc->errormsg);
3842                         free_recipients(valid_to);
3843                         free_recipients(valid_cc);
3844                         return;
3845                 }
3846
3847                 valid_bcc = validate_recipients(bcc, NULL, 0);
3848                 if (valid_bcc->num_error > 0) {
3849                         cprintf("%d %s\n", ERROR + NO_SUCH_USER, valid_bcc->errormsg);
3850                         free_recipients(valid_to);
3851                         free_recipients(valid_cc);
3852                         free_recipients(valid_bcc);
3853                         return;
3854                 }
3855
3856                 /* Recipient required, but none were specified */
3857                 if ( (valid_to->num_error < 0) && (valid_cc->num_error < 0) && (valid_bcc->num_error < 0) ) {
3858                         free_recipients(valid_to);
3859                         free_recipients(valid_cc);
3860                         free_recipients(valid_bcc);
3861                         cprintf("%d At least one recipient is required.\n", ERROR + NO_SUCH_USER);
3862                         return;
3863                 }
3864
3865                 if (valid_to->num_internet + valid_cc->num_internet + valid_bcc->num_internet > 0) {
3866                         if (CtdlCheckInternetMailPermission(&CC->user)==0) {
3867                                 cprintf("%d You do not have permission "
3868                                         "to send Internet mail.\n",
3869                                         ERROR + HIGHER_ACCESS_REQUIRED);
3870                                 free_recipients(valid_to);
3871                                 free_recipients(valid_cc);
3872                                 free_recipients(valid_bcc);
3873                                 return;
3874                         }
3875                 }
3876
3877                 if ( ( (valid_to->num_internet + valid_to->num_ignet + valid_cc->num_internet + valid_cc->num_ignet + valid_bcc->num_internet + valid_bcc->num_ignet) > 0)
3878                    && (CC->user.axlevel < 4) ) {
3879                         cprintf("%d Higher access required for network mail.\n",
3880                                 ERROR + HIGHER_ACCESS_REQUIRED);
3881                         free_recipients(valid_to);
3882                         free_recipients(valid_cc);
3883                         free_recipients(valid_bcc);
3884                         return;
3885                 }
3886
3887                 if ((RESTRICT_INTERNET == 1)
3888                     && (valid_to->num_internet + valid_cc->num_internet + valid_bcc->num_internet > 0)
3889                     && ((CC->user.flags & US_INTERNET) == 0)
3890                     && (!CC->internal_pgm)) {
3891                         cprintf("%d You don't have access to Internet mail.\n",
3892                                 ERROR + HIGHER_ACCESS_REQUIRED);
3893                         free_recipients(valid_to);
3894                         free_recipients(valid_cc);
3895                         free_recipients(valid_bcc);
3896                         return;
3897                 }
3898
3899         }
3900
3901         /* Is this a room which has anonymous-only or anonymous-option? */
3902         anonymous = MES_NORMAL;
3903         if (CC->room.QRflags & QR_ANONONLY) {
3904                 anonymous = MES_ANONONLY;
3905         }
3906         if (CC->room.QRflags & QR_ANONOPT) {
3907                 if (anon_flag == 1) {   /* only if the user requested it */
3908                         anonymous = MES_ANONOPT;
3909                 }
3910         }
3911
3912         if ((CC->room.QRflags & QR_MAILBOX) == 0) {
3913                 recp[0] = 0;
3914         }
3915
3916         /* Recommend to the client that the use of a message subject is
3917          * strongly recommended in this room, if either the SUBJECTREQ flag
3918          * is set, or if there is one or more Internet email recipients.
3919          */
3920         if (CC->room.QRflags2 & QR2_SUBJECTREQ) subject_required = 1;
3921         if ((valid_to)  && (valid_to->num_internet > 0))        subject_required = 1;
3922         if ((valid_cc)  && (valid_cc->num_internet > 0))        subject_required = 1;
3923         if ((valid_bcc) && (valid_bcc->num_internet > 0))       subject_required = 1;
3924
3925         /* If we're only checking the validity of the request, return
3926          * success without creating the message.
3927          */
3928         if (post == 0) {
3929                 cprintf("%d %s|%d\n", CIT_OK,
3930                         ((valid_to != NULL) ? valid_to->display_recp : ""),
3931                         subject_required);
3932                 free_recipients(valid_to);
3933                 free_recipients(valid_cc);
3934                 free_recipients(valid_bcc);
3935                 return;
3936         }
3937
3938         /* We don't need these anymore because we'll do it differently below */
3939         free_recipients(valid_to);
3940         free_recipients(valid_cc);
3941         free_recipients(valid_bcc);
3942
3943         /* Read in the message from the client. */
3944         if (do_confirm) {
3945                 cprintf("%d send message\n", START_CHAT_MODE);
3946         } else {
3947                 cprintf("%d send message\n", SEND_LISTING);
3948         }
3949
3950         msg = CtdlMakeMessage(&CC->user, recp, cc,
3951                 CC->room.QRname, anonymous, format_type,
3952                 newusername, newuseremail, subject,
3953                 ((!IsEmptyStr(supplied_euid)) ? supplied_euid : NULL),
3954                 NULL, references);
3955
3956         /* Put together one big recipients struct containing to/cc/bcc all in
3957          * one.  This is for the envelope.
3958          */
3959         char *all_recps = malloc(SIZ * 3);
3960         strcpy(all_recps, recp);
3961         if (!IsEmptyStr(cc)) {
3962                 if (!IsEmptyStr(all_recps)) {
3963                         strcat(all_recps, ",");
3964                 }
3965                 strcat(all_recps, cc);
3966         }
3967         if (!IsEmptyStr(bcc)) {
3968                 if (!IsEmptyStr(all_recps)) {
3969                         strcat(all_recps, ",");
3970                 }
3971                 strcat(all_recps, bcc);
3972         }
3973         if (!IsEmptyStr(all_recps)) {
3974                 valid = validate_recipients(all_recps, NULL, 0);
3975         }
3976         else {
3977                 valid = NULL;
3978         }
3979         free(all_recps);
3980
3981         if (msg != NULL) {
3982                 msgnum = CtdlSubmitMsg(msg, valid, "", QP_EADDR);
3983
3984                 if (do_confirm) {
3985                         cprintf("%ld\n", msgnum);
3986                         if (msgnum >= 0L) {
3987                                 cprintf("Message accepted.\n");
3988                         }
3989                         else {
3990                                 cprintf("Internal error.\n");
3991                         }
3992                         if (msg->cm_fields['E'] != NULL) {
3993                                 cprintf("%s\n", msg->cm_fields['E']);
3994                         } else {
3995                                 cprintf("\n");
3996                         }
3997                         cprintf("000\n");
3998                 }
3999
4000                 CtdlFreeMessage(msg);
4001         }
4002         if (valid != NULL) {
4003                 free_recipients(valid);
4004         }
4005         return;
4006 }
4007
4008
4009
4010 /*
4011  * API function to delete messages which match a set of criteria
4012  * (returns the actual number of messages deleted)
4013  */
4014 int CtdlDeleteMessages(char *room_name,         /* which room */
4015                         long *dmsgnums,         /* array of msg numbers to be deleted */
4016                         int num_dmsgnums,       /* number of msgs to be deleted, or 0 for "any" */
4017                         char *content_type      /* or "" for any.  regular expressions expected. */
4018 )
4019 {
4020         struct ctdlroom qrbuf;
4021         struct cdbdata *cdbfr;
4022         long *msglist = NULL;
4023         long *dellist = NULL;
4024         int num_msgs = 0;
4025         int i, j;
4026         int num_deleted = 0;
4027         int delete_this;
4028         struct MetaData smi;
4029         regex_t re;
4030         regmatch_t pm;
4031         int need_to_free_re = 0;
4032
4033         if (content_type) if (!IsEmptyStr(content_type)) {
4034                 regcomp(&re, content_type, 0);
4035                 need_to_free_re = 1;
4036         }
4037         CtdlLogPrintf(CTDL_DEBUG, "CtdlDeleteMessages(%s, %d msgs, %s)\n",
4038                 room_name, num_dmsgnums, content_type);
4039
4040         /* get room record, obtaining a lock... */
4041         if (lgetroom(&qrbuf, room_name) != 0) {
4042                 CtdlLogPrintf(CTDL_ERR, "CtdlDeleteMessages(): Room <%s> not found\n",
4043                         room_name);
4044                 if (need_to_free_re) regfree(&re);
4045                 return (0);     /* room not found */
4046         }
4047         cdbfr = cdb_fetch(CDB_MSGLISTS, &qrbuf.QRnumber, sizeof(long));
4048
4049         if (cdbfr != NULL) {
4050                 dellist = malloc(cdbfr->len);
4051                 msglist = (long *) cdbfr->ptr;
4052                 cdbfr->ptr = NULL;      /* CtdlDeleteMessages() now owns this memory */
4053                 num_msgs = cdbfr->len / sizeof(long);
4054                 cdb_free(cdbfr);
4055         }
4056         if (num_msgs > 0) {
4057                 for (i = 0; i < num_msgs; ++i) {
4058                         delete_this = 0x00;
4059
4060                         /* Set/clear a bit for each criterion */
4061
4062                         /* 0 messages in the list or a null list means that we are
4063                          * interested in deleting any messages which meet the other criteria.
4064                          */
4065                         if ((num_dmsgnums == 0) || (dmsgnums == NULL)) {
4066                                 delete_this |= 0x01;
4067                         }
4068                         else {
4069                                 for (j=0; j<num_dmsgnums; ++j) {
4070                                         if (msglist[i] == dmsgnums[j]) {
4071                                                 delete_this |= 0x01;
4072                                         }
4073                                 }
4074                         }
4075
4076                         if (IsEmptyStr(content_type)) {
4077                                 delete_this |= 0x02;
4078                         } else {
4079                                 GetMetaData(&smi, msglist[i]);
4080                                 if (regexec(&re, smi.meta_content_type, 1, &pm, 0) == 0) {
4081                                         delete_this |= 0x02;
4082                                 }
4083                         }
4084
4085                         /* Delete message only if all bits are set */
4086                         if (delete_this == 0x03) {
4087                                 dellist[num_deleted++] = msglist[i];
4088                                 msglist[i] = 0L;
4089                         }
4090                 }
4091
4092                 num_msgs = sort_msglist(msglist, num_msgs);
4093                 cdb_store(CDB_MSGLISTS, &qrbuf.QRnumber, (int)sizeof(long),
4094                           msglist, (int)(num_msgs * sizeof(long)));
4095
4096                 qrbuf.QRhighest = msglist[num_msgs - 1];
4097         }
4098         lputroom(&qrbuf);
4099
4100         /* Go through the messages we pulled out of the index, and decrement
4101          * their reference counts by 1.  If this is the only room the message
4102          * was in, the reference count will reach zero and the message will
4103          * automatically be deleted from the database.  We do this in a
4104          * separate pass because there might be plug-in hooks getting called,
4105          * and we don't want that happening during an S_ROOMS critical
4106          * section.
4107          */
4108         if (num_deleted) for (i=0; i<num_deleted; ++i) {
4109                 PerformDeleteHooks(qrbuf.QRname, dellist[i]);
4110                 AdjRefCount(dellist[i], -1);
4111         }
4112
4113         /* Now free the memory we used, and go away. */
4114         if (msglist != NULL) free(msglist);
4115         if (dellist != NULL) free(dellist);
4116         CtdlLogPrintf(CTDL_DEBUG, "%d message(s) deleted.\n", num_deleted);
4117         if (need_to_free_re) regfree(&re);
4118         return (num_deleted);
4119 }
4120
4121
4122
4123 /*
4124  * Check whether the current user has permission to delete messages from
4125  * the current room (returns 1 for yes, 0 for no)
4126  */
4127 int CtdlDoIHavePermissionToDeleteMessagesFromThisRoom(void) {
4128         int ra;
4129         CtdlRoomAccess(&CC->room, &CC->user, &ra, NULL);
4130         if (ra & UA_DELETEALLOWED) return(1);
4131         return(0);
4132 }
4133
4134
4135
4136
4137 /*
4138  * Delete message from current room
4139  */
4140 void cmd_dele(char *args)
4141 {
4142         int num_deleted;
4143         int i;
4144         char msgset[SIZ];
4145         char msgtok[32];
4146         long *msgs;
4147         int num_msgs = 0;
4148
4149         extract_token(msgset, args, 0, '|', sizeof msgset);
4150         num_msgs = num_tokens(msgset, ',');
4151         if (num_msgs < 1) {
4152                 cprintf("%d Nothing to do.\n", CIT_OK);
4153                 return;
4154         }
4155
4156         if (CtdlDoIHavePermissionToDeleteMessagesFromThisRoom() == 0) {
4157                 cprintf("%d Higher access required.\n",
4158                         ERROR + HIGHER_ACCESS_REQUIRED);
4159                 return;
4160         }
4161
4162         /*
4163          * Build our message set to be moved/copied
4164          */
4165         msgs = malloc(num_msgs * sizeof(long));
4166         for (i=0; i<num_msgs; ++i) {
4167                 extract_token(msgtok, msgset, i, ',', sizeof msgtok);
4168                 msgs[i] = atol(msgtok);
4169         }
4170
4171         num_deleted = CtdlDeleteMessages(CC->room.QRname, msgs, num_msgs, "");
4172         free(msgs);
4173
4174         if (num_deleted) {
4175                 cprintf("%d %d message%s deleted.\n", CIT_OK,
4176                         num_deleted, ((num_deleted != 1) ? "s" : ""));
4177         } else {
4178                 cprintf("%d Message not found.\n", ERROR + MESSAGE_NOT_FOUND);
4179         }
4180 }
4181
4182
4183
4184
4185 /*
4186  * move or copy a message to another room
4187  */
4188 void cmd_move(char *args)
4189 {
4190         char msgset[SIZ];
4191         char msgtok[32];
4192         long *msgs;
4193         int num_msgs = 0;
4194
4195         char targ[ROOMNAMELEN];
4196         struct ctdlroom qtemp;
4197         int err;
4198         int is_copy = 0;
4199         int ra;
4200         int permit = 0;
4201         int i;
4202
4203         extract_token(msgset, args, 0, '|', sizeof msgset);
4204         num_msgs = num_tokens(msgset, ',');
4205         if (num_msgs < 1) {
4206                 cprintf("%d Nothing to do.\n", CIT_OK);
4207                 return;
4208         }
4209
4210         extract_token(targ, args, 1, '|', sizeof targ);
4211         convert_room_name_macros(targ, sizeof targ);
4212         targ[ROOMNAMELEN - 1] = 0;
4213         is_copy = extract_int(args, 2);
4214
4215         if (getroom(&qtemp, targ) != 0) {
4216                 cprintf("%d '%s' does not exist.\n", ERROR + ROOM_NOT_FOUND, targ);
4217                 return;
4218         }
4219
4220         if (!strcasecmp(qtemp.QRname, CC->room.QRname)) {
4221                 cprintf("%d Source and target rooms are the same.\n", ERROR + ALREADY_EXISTS);
4222                 return;
4223         }
4224
4225         getuser(&CC->user, CC->curr_user);
4226         CtdlRoomAccess(&qtemp, &CC->user, &ra, NULL);
4227
4228         /* Check for permission to perform this operation.
4229          * Remember: "CC->room" is source, "qtemp" is target.
4230          */
4231         permit = 0;
4232
4233         /* Aides can move/copy */
4234         if (CC->user.axlevel >= 6) permit = 1;
4235
4236         /* Room aides can move/copy */
4237         if (CC->user.usernum == CC->room.QRroomaide) permit = 1;
4238
4239         /* Permit move/copy from personal rooms */
4240         if ((CC->room.QRflags & QR_MAILBOX)
4241            && (qtemp.QRflags & QR_MAILBOX)) permit = 1;
4242
4243         /* Permit only copy from public to personal room */
4244         if ( (is_copy)
4245            && (!(CC->room.QRflags & QR_MAILBOX))
4246            && (qtemp.QRflags & QR_MAILBOX)) permit = 1;
4247
4248         /* Permit message removal from collaborative delete rooms */
4249         if (CC->room.QRflags2 & QR2_COLLABDEL) permit = 1;
4250
4251         /* Users allowed to post into the target room may move into it too. */
4252         if ((CC->room.QRflags & QR_MAILBOX) &&
4253             (qtemp.QRflags & UA_POSTALLOWED))  permit = 1;
4254
4255         /* User must have access to target room */
4256         if (!(ra & UA_KNOWN))  permit = 0;
4257
4258         if (!permit) {
4259                 cprintf("%d Higher access required.\n",
4260                         ERROR + HIGHER_ACCESS_REQUIRED);
4261                 return;
4262         }
4263
4264         /*
4265          * Build our message set to be moved/copied
4266          */
4267         msgs = malloc(num_msgs * sizeof(long));
4268         for (i=0; i<num_msgs; ++i) {
4269                 extract_token(msgtok, msgset, i, ',', sizeof msgtok);
4270                 msgs[i] = atol(msgtok);
4271         }
4272
4273         /*
4274          * Do the copy
4275          */
4276         err = CtdlSaveMsgPointersInRoom(targ, msgs, num_msgs, 1, NULL);
4277         if (err != 0) {
4278                 cprintf("%d Cannot store message(s) in %s: error %d\n",
4279                         err, targ, err);
4280                 free(msgs);
4281                 return;
4282         }
4283
4284         /* Now delete the message from the source room,
4285          * if this is a 'move' rather than a 'copy' operation.
4286          */
4287         if (is_copy == 0) {
4288                 CtdlDeleteMessages(CC->room.QRname, msgs, num_msgs, "");
4289         }
4290         free(msgs);
4291
4292         cprintf("%d Message(s) %s.\n", CIT_OK, (is_copy ? "copied" : "moved") );
4293 }
4294
4295
4296
4297 /*
4298  * GetMetaData()  -  Get the supplementary record for a message
4299  */
4300 void GetMetaData(struct MetaData *smibuf, long msgnum)
4301 {
4302
4303         struct cdbdata *cdbsmi;
4304         long TheIndex;
4305
4306         memset(smibuf, 0, sizeof(struct MetaData));
4307         smibuf->meta_msgnum = msgnum;
4308         smibuf->meta_refcount = 1;      /* Default reference count is 1 */
4309
4310         /* Use the negative of the message number for its supp record index */
4311         TheIndex = (0L - msgnum);
4312
4313         cdbsmi = cdb_fetch(CDB_MSGMAIN, &TheIndex, sizeof(long));
4314         if (cdbsmi == NULL) {
4315                 return;         /* record not found; go with defaults */
4316         }
4317         memcpy(smibuf, cdbsmi->ptr,
4318                ((cdbsmi->len > sizeof(struct MetaData)) ?
4319                 sizeof(struct MetaData) : cdbsmi->len));
4320         cdb_free(cdbsmi);
4321         return;
4322 }
4323
4324
4325 /*
4326  * PutMetaData()  -  (re)write supplementary record for a message
4327  */
4328 void PutMetaData(struct MetaData *smibuf)
4329 {
4330         long TheIndex;
4331
4332         /* Use the negative of the message number for the metadata db index */
4333         TheIndex = (0L - smibuf->meta_msgnum);
4334
4335         cdb_store(CDB_MSGMAIN,
4336                   &TheIndex, (int)sizeof(long),
4337                   smibuf, (int)sizeof(struct MetaData));
4338
4339 }
4340
4341 /*
4342  * AdjRefCount  -  submit an adjustment to the reference count for a message.
4343  *                 (These are just queued -- we actually process them later.)
4344  */
4345 void AdjRefCount(long msgnum, int incr)
4346 {
4347         struct arcq new_arcq;
4348
4349         begin_critical_section(S_SUPPMSGMAIN);
4350         if (arcfp == NULL) {
4351                 arcfp = fopen(file_arcq, "ab+");
4352         }
4353         end_critical_section(S_SUPPMSGMAIN);
4354
4355         /* msgnum < 0 means that we're trying to close the file */
4356         if (msgnum < 0) {
4357                 CtdlLogPrintf(CTDL_DEBUG, "Closing the AdjRefCount queue file\n");
4358                 begin_critical_section(S_SUPPMSGMAIN);
4359                 if (arcfp != NULL) {
4360                         fclose(arcfp);
4361                         arcfp = NULL;
4362                 }
4363                 end_critical_section(S_SUPPMSGMAIN);
4364                 return;
4365         }
4366
4367         /*
4368          * If we can't open the queue, perform the operation synchronously.
4369          */
4370         if (arcfp == NULL) {
4371                 TDAP_AdjRefCount(msgnum, incr);
4372                 return;
4373         }
4374
4375         new_arcq.arcq_msgnum = msgnum;
4376         new_arcq.arcq_delta = incr;
4377         fwrite(&new_arcq, sizeof(struct arcq), 1, arcfp);
4378         fflush(arcfp);
4379
4380         return;
4381 }
4382
4383
4384 /*
4385  * TDAP_ProcessAdjRefCountQueue()
4386  *
4387  * Process the queue of message count adjustments that was created by calls
4388  * to AdjRefCount() ... by reading the queue and calling TDAP_AdjRefCount()
4389  * for each one.  This should be an "off hours" operation.
4390  */
4391 int TDAP_ProcessAdjRefCountQueue(void)
4392 {
4393         char file_arcq_temp[PATH_MAX];
4394         int r;
4395         FILE *fp;
4396         struct arcq arcq_rec;
4397         int num_records_processed = 0;
4398
4399         snprintf(file_arcq_temp, sizeof file_arcq_temp, "%s.%04x", file_arcq, rand());
4400
4401         begin_critical_section(S_SUPPMSGMAIN);
4402         if (arcfp != NULL) {
4403                 fclose(arcfp);
4404                 arcfp = NULL;
4405         }
4406
4407         r = link(file_arcq, file_arcq_temp);
4408         if (r != 0) {
4409                 CtdlLogPrintf(CTDL_CRIT, "%s: %s\n", file_arcq_temp, strerror(errno));
4410                 end_critical_section(S_SUPPMSGMAIN);
4411                 return(num_records_processed);
4412         }
4413
4414         unlink(file_arcq);
4415         end_critical_section(S_SUPPMSGMAIN);
4416
4417         fp = fopen(file_arcq_temp, "rb");
4418         if (fp == NULL) {
4419                 CtdlLogPrintf(CTDL_CRIT, "%s: %s\n", file_arcq_temp, strerror(errno));
4420                 return(num_records_processed);
4421         }
4422
4423         while (fread(&arcq_rec, sizeof(struct arcq), 1, fp) == 1) {
4424                 TDAP_AdjRefCount(arcq_rec.arcq_msgnum, arcq_rec.arcq_delta);
4425                 ++num_records_processed;
4426         }
4427
4428         fclose(fp);
4429         r = unlink(file_arcq_temp);
4430         if (r != 0) {
4431                 CtdlLogPrintf(CTDL_CRIT, "%s: %s\n", file_arcq_temp, strerror(errno));
4432         }
4433
4434         return(num_records_processed);
4435 }
4436
4437
4438
4439 /*
4440  * TDAP_AdjRefCount  -  adjust the reference count for a message.
4441  *                      This one does it "for real" because it's called by
4442  *                      the autopurger function that processes the queue
4443  *                      created by AdjRefCount().   If a message's reference
4444  *                      count becomes zero, we also delete the message from
4445  *                      disk and de-index it.
4446  */
4447 void TDAP_AdjRefCount(long msgnum, int incr)
4448 {
4449
4450         struct MetaData smi;
4451         long delnum;
4452
4453         /* This is a *tight* critical section; please keep it that way, as
4454          * it may get called while nested in other critical sections.
4455          * Complicating this any further will surely cause deadlock!
4456          */
4457         begin_critical_section(S_SUPPMSGMAIN);
4458         GetMetaData(&smi, msgnum);
4459         smi.meta_refcount += incr;
4460         PutMetaData(&smi);
4461         end_critical_section(S_SUPPMSGMAIN);
4462         CtdlLogPrintf(CTDL_DEBUG, "msg %ld ref count delta %+d, is now %d\n",
4463                 msgnum, incr, smi.meta_refcount);
4464
4465         /* If the reference count is now zero, delete the message
4466          * (and its supplementary record as well).
4467          */
4468         if (smi.meta_refcount == 0) {
4469                 CtdlLogPrintf(CTDL_DEBUG, "Deleting message <%ld>\n", msgnum);
4470
4471                 /* Call delete hooks with NULL room to show it has gone altogether */
4472                 PerformDeleteHooks(NULL, msgnum);
4473
4474                 /* Remove from message base */
4475                 delnum = msgnum;
4476                 cdb_delete(CDB_MSGMAIN, &delnum, (int)sizeof(long));
4477                 cdb_delete(CDB_BIGMSGS, &delnum, (int)sizeof(long));
4478
4479                 /* Remove metadata record */
4480                 delnum = (0L - msgnum);
4481                 cdb_delete(CDB_MSGMAIN, &delnum, (int)sizeof(long));
4482         }
4483
4484 }
4485
4486 /*
4487  * Write a generic object to this room
4488  *
4489  * Note: this could be much more efficient.  Right now we use two temporary
4490  * files, and still pull the message into memory as with all others.
4491  */
4492 void CtdlWriteObject(char *req_room,                    /* Room to stuff it in */
4493                         char *content_type,             /* MIME type of this object */
4494                         char *raw_message,              /* Data to be written */
4495                         off_t raw_length,               /* Size of raw_message */
4496                         struct ctdluser *is_mailbox,    /* Mailbox room? */
4497                         int is_binary,                  /* Is encoding necessary? */
4498                         int is_unique,                  /* Del others of this type? */
4499                         unsigned int flags              /* Internal save flags */
4500                         )
4501 {
4502
4503         struct ctdlroom qrbuf;
4504         char roomname[ROOMNAMELEN];
4505         struct CtdlMessage *msg;
4506         char *encoded_message = NULL;
4507
4508         if (is_mailbox != NULL) {
4509                 MailboxName(roomname, sizeof roomname, is_mailbox, req_room);
4510         }
4511         else {
4512                 safestrncpy(roomname, req_room, sizeof(roomname));
4513         }
4514
4515         CtdlLogPrintf(CTDL_DEBUG, "Raw length is %ld\n", (long)raw_length);
4516
4517         if (is_binary) {
4518                 encoded_message = malloc((size_t) (((raw_length * 134) / 100) + 4096 ) );
4519         }
4520         else {
4521                 encoded_message = malloc((size_t)(raw_length + 4096));
4522         }
4523
4524         sprintf(encoded_message, "Content-type: %s\n", content_type);
4525
4526         if (is_binary) {
4527                 sprintf(&encoded_message[strlen(encoded_message)],
4528                         "Content-transfer-encoding: base64\n\n"
4529                 );
4530         }
4531         else {
4532                 sprintf(&encoded_message[strlen(encoded_message)],
4533                         "Content-transfer-encoding: 7bit\n\n"
4534                 );
4535         }
4536
4537         if (is_binary) {
4538                 CtdlEncodeBase64(
4539                         &encoded_message[strlen(encoded_message)],
4540                         raw_message,
4541                         (int)raw_length,
4542                         0
4543                 );
4544         }
4545         else {
4546                 memcpy(
4547                         &encoded_message[strlen(encoded_message)],
4548                         raw_message,
4549                         (int)(raw_length+1)
4550                 );
4551         }
4552
4553         CtdlLogPrintf(CTDL_DEBUG, "Allocating\n");
4554         msg = malloc(sizeof(struct CtdlMessage));
4555         memset(msg, 0, sizeof(struct CtdlMessage));
4556         msg->cm_magic = CTDLMESSAGE_MAGIC;
4557         msg->cm_anon_type = MES_NORMAL;
4558         msg->cm_format_type = 4;
4559         msg->cm_fields['A'] = strdup(CC->user.fullname);
4560         msg->cm_fields['O'] = strdup(req_room);
4561         msg->cm_fields['N'] = strdup(config.c_nodename);
4562         msg->cm_fields['H'] = strdup(config.c_humannode);
4563         msg->cm_flags = flags;
4564
4565         msg->cm_fields['M'] = encoded_message;
4566
4567         /* Create the requested room if we have to. */
4568         if (getroom(&qrbuf, roomname) != 0) {
4569                 create_room(roomname,
4570                         ( (is_mailbox != NULL) ? 5 : 3 ),
4571                         "", 0, 1, 0, VIEW_BBS);
4572         }
4573         /* If the caller specified this object as unique, delete all
4574          * other objects of this type that are currently in the room.
4575          */
4576         if (is_unique) {
4577                 CtdlLogPrintf(CTDL_DEBUG, "Deleted %d other msgs of this type\n",
4578                         CtdlDeleteMessages(roomname, NULL, 0, content_type)
4579                 );
4580         }
4581         /* Now write the data */
4582         CtdlSubmitMsg(msg, NULL, roomname, 0);
4583         CtdlFreeMessage(msg);
4584 }
4585
4586
4587
4588
4589
4590
4591 void CtdlGetSysConfigBackend(long msgnum, void *userdata) {
4592         config_msgnum = msgnum;
4593 }
4594
4595
4596 char *CtdlGetSysConfig(char *sysconfname) {
4597         char hold_rm[ROOMNAMELEN];
4598         long msgnum;
4599         char *conf;
4600         struct CtdlMessage *msg;
4601         char buf[SIZ];
4602
4603         strcpy(hold_rm, CC->room.QRname);
4604         if (getroom(&CC->room, SYSCONFIGROOM) != 0) {
4605                 getroom(&CC->room, hold_rm);
4606                 return NULL;
4607         }
4608
4609
4610         /* We want the last (and probably only) config in this room */
4611         begin_critical_section(S_CONFIG);
4612         config_msgnum = (-1L);
4613         CtdlForEachMessage(MSGS_LAST, 1, NULL, sysconfname, NULL,
4614                 CtdlGetSysConfigBackend, NULL);
4615         msgnum = config_msgnum;
4616         end_critical_section(S_CONFIG);
4617
4618         if (msgnum < 0L) {
4619                 conf = NULL;
4620         }
4621         else {
4622                 msg = CtdlFetchMessage(msgnum, 1);
4623                 if (msg != NULL) {
4624                         conf = strdup(msg->cm_fields['M']);
4625                         CtdlFreeMessage(msg);
4626                 }
4627                 else {
4628                         conf = NULL;
4629                 }
4630         }
4631
4632         getroom(&CC->room, hold_rm);
4633
4634         if (conf != NULL) do {
4635                 extract_token(buf, conf, 0, '\n', sizeof buf);
4636                 strcpy(conf, &conf[strlen(buf)+1]);
4637         } while ( (!IsEmptyStr(conf)) && (!IsEmptyStr(buf)) );
4638
4639         return(conf);
4640 }
4641
4642
4643 void CtdlPutSysConfig(char *sysconfname, char *sysconfdata) {
4644         CtdlWriteObject(SYSCONFIGROOM, sysconfname, sysconfdata, (strlen(sysconfdata)+1), NULL, 0, 1, 0);
4645 }
4646
4647
4648 /*
4649  * Determine whether a given Internet address belongs to the current user
4650  */
4651 int CtdlIsMe(char *addr, int addr_buf_len)
4652 {
4653         struct recptypes *recp;
4654         int i;
4655
4656         recp = validate_recipients(addr, NULL, 0);
4657         if (recp == NULL) return(0);
4658
4659         if (recp->num_local == 0) {
4660                 free_recipients(recp);
4661                 return(0);
4662         }
4663
4664         for (i=0; i<recp->num_local; ++i) {
4665                 extract_token(addr, recp->recp_local, i, '|', addr_buf_len);
4666                 if (!strcasecmp(addr, CC->user.fullname)) {
4667                         free_recipients(recp);
4668                         return(1);
4669                 }
4670         }
4671
4672         free_recipients(recp);
4673         return(0);
4674 }
4675
4676
4677 /*
4678  * Citadel protocol command to do the same
4679  */
4680 void cmd_isme(char *argbuf) {
4681         char addr[256];
4682
4683         if (CtdlAccessCheck(ac_logged_in)) return;
4684         extract_token(addr, argbuf, 0, '|', sizeof addr);
4685
4686         if (CtdlIsMe(addr, sizeof addr)) {
4687                 cprintf("%d %s\n", CIT_OK, addr);
4688         }
4689         else {
4690                 cprintf("%d Not you.\n", ERROR + ILLEGAL_VALUE);
4691         }
4692
4693 }
4694
4695
4696 /*****************************************************************************/
4697 /*                      MODULE INITIALIZATION STUFF                          */
4698 /*****************************************************************************/
4699
4700 CTDL_MODULE_INIT(msgbase)
4701 {
4702         CtdlRegisterProtoHook(cmd_msgs, "MSGS", "Output a list of messages in the current room");
4703         CtdlRegisterProtoHook(cmd_msg0, "MSG0", "Output a message in plain text format");
4704         CtdlRegisterProtoHook(cmd_msg2, "MSG2", "Output a message in RFC822 format");
4705         CtdlRegisterProtoHook(cmd_msg3, "MSG3", "Output a message in raw format (deprecated)");
4706         CtdlRegisterProtoHook(cmd_msg4, "MSG4", "Output a message in the client's preferred format");
4707         CtdlRegisterProtoHook(cmd_msgp, "MSGP", "Select preferred format for MSG4 output");
4708         CtdlRegisterProtoHook(cmd_opna, "OPNA", "Open an attachment for download");
4709         CtdlRegisterProtoHook(cmd_dlat, "DLAT", "Download an attachment");
4710         CtdlRegisterProtoHook(cmd_ent0, "ENT0", "Enter a message");
4711         CtdlRegisterProtoHook(cmd_dele, "DELE", "Delete a message");
4712         CtdlRegisterProtoHook(cmd_move, "MOVE", "Move or copy a message to another room");
4713         CtdlRegisterProtoHook(cmd_isme, "ISME", "Determine whether an email address belongs to a user");
4714
4715         /* return our Subversion id for the Log */
4716         return "$Id$";
4717 }