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