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