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