citadel/msgbase.c

   1 /*
   2  * $Id$
   3  *
   4  * Implements the message store.
   5  *
   6  */
   7
   8 #include "sysdep.h"
   9 #include <stdlib.h>
  10 #include <unistd.h>
  11 #include <stdio.h>
  12 #include <fcntl.h>
  13
  14 #if TIME_WITH_SYS_TIME
  15 # include <sys/time.h>
  16 # include <time.h>
  17 #else
  18 # if HAVE_SYS_TIME_H
  19 #  include <sys/time.h>
  20 # else
  21 #  include <time.h>
  22 # endif
  23 #endif
  24
  25
  26 #include <ctype.h>
  27 #include <string.h>
  28 #include <limits.h>
  29 #include <errno.h>
  30 #include <stdarg.h>
  31 #include <sys/stat.h>
  32 #include <sys/types.h>
  33 #include <regex.h>
  34 #include <libcitadel.h>
  35 #include "citadel.h"
  36 #include "server.h"
  37 #include "serv_extensions.h"
  38 #include "database.h"
  39 #include "msgbase.h"
  40 #include "support.h"
  41 #include "sysdep_decls.h"
  42 #include "citserver.h"
  43 #include "room_ops.h"
  44 #include "user_ops.h"
  45 #include "file_ops.h"
  46 #include "config.h"
  47 #include "control.h"
  48 #include "genstamp.h"
  49 #include "internet_addressing.h"
  50 #include "euidindex.h"
  51 #include "journaling.h"
  52 #include "citadel_dirs.h"
  53 #include "clientsocket.h"
  54 #include "serv_network.h"
  55 #include "threads.h"
  56
  57 #include "ctdl_module.h"
  58
  59 long config_msgnum;
  60 struct addresses_to_be_filed *atbf = NULL;
  61
  62 /* This temp file holds the queue of operations for AdjRefCount() */
  63 static FILE *arcfp = NULL;
  64
  65 /*
  66  * This really belongs in serv_network.c, but I don't know how to export
  67  * symbols between modules.
  68  */
  69 struct FilterList *filterlist = NULL;
  70
  71
  72 /*
  73  * These are the four-character field headers we use when outputting
  74  * messages in Citadel format (as opposed to RFC822 format).
  75  */
  76 char *msgkeys[] = {
  77         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  78         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  79         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  80         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  81         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  82         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  83         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  84         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  85         NULL,
  86         "from",
  87         NULL, NULL, NULL,
  88         "exti",
  89         "rfca",
  90         NULL,
  91         "hnod",
  92         "msgn",
  93         "jrnl",
  94         NULL,
  95         "list",
  96         "text",
  97         "node",
  98         "room",
  99         "path",
 100         NULL,
 101         "rcpt",
 102         "spec",
 103         "time",
 104         "subj",
 105         NULL,
 106         "wefw",
 107         NULL,
 108         "cccc",
 109         NULL
 110 };
 111
 112 /*
 113  * This function is self explanatory.
 114  * (What can I say, I'm in a weird mood today...)
 115  */
 116 void remove_any_whitespace_to_the_left_or_right_of_at_symbol(char *name)
 117 {
 118         int i;
 119
 120         for (i = 0; i < strlen(name); ++i) {
 121                 if (name[i] == '@') {
 122                         while (isspace(name[i - 1]) && i > 0) {
 123                                 strcpy(&name[i - 1], &name[i]);
 124                                 --i;
 125                         }
 126                         while (isspace(name[i + 1])) {
 127                                 strcpy(&name[i + 1], &name[i + 2]);
 128                         }
 129                 }
 130         }
 131 }
 132
 133
 134 /*
 135  * Aliasing for network mail.
 136  * (Error messages have been commented out, because this is a server.)
 137  */
 138 int alias(char *name)
 139 {                               /* process alias and routing info for mail */
 140         FILE *fp;
 141         int a, i;
 142         char aaa[SIZ], bbb[SIZ];
 143         char *ignetcfg = NULL;
 144         char *ignetmap = NULL;
 145         int at = 0;
 146         char node[64];
 147         char testnode[64];
 148         char buf[SIZ];
 149
 150         char original_name[256];
 151         safestrncpy(original_name, name, sizeof original_name);
 152
 153         striplt(name);
 154         remove_any_whitespace_to_the_left_or_right_of_at_symbol(name);
 155         stripallbut(name, '<', '>');
 156
 157         fp = fopen(file_mail_aliases, "r");
 158         if (fp == NULL) {
 159                 fp = fopen("/dev/null", "r");
 160         }
 161         if (fp == NULL) {
 162                 return (MES_ERROR);
 163         }
 164         strcpy(aaa, "");
 165         strcpy(bbb, "");
 166         while (fgets(aaa, sizeof aaa, fp) != NULL) {
 167                 while (isspace(name[0]))
 168                         strcpy(name, &name[1]);
 169                 aaa[strlen(aaa) - 1] = 0;
 170                 strcpy(bbb, "");
 171                 for (a = 0; a < strlen(aaa); ++a) {
 172                         if (aaa[a] == ',') {
 173                                 strcpy(bbb, &aaa[a + 1]);
 174                                 aaa[a] = 0;
 175                         }
 176                 }
 177                 if (!strcasecmp(name, aaa))
 178                         strcpy(name, bbb);
 179         }
 180         fclose(fp);
 181
 182         /* Hit the Global Address Book */
 183         if (CtdlDirectoryLookup(aaa, name, sizeof aaa) == 0) {
 184                 strcpy(name, aaa);
 185         }
 186
 187         if (strcasecmp(original_name, name)) {
 188                 CtdlLogPrintf(CTDL_INFO, "%s is being forwarded to %s\n", original_name, name);
 189         }
 190
 191         /* Change "user @ xxx" to "user" if xxx is an alias for this host */
 192         for (a=0; a<strlen(name); ++a) {
 193                 if (name[a] == '@') {
 194                         if (CtdlHostAlias(&name[a+1]) == hostalias_localhost) {
 195                                 name[a] = 0;
 196                                 CtdlLogPrintf(CTDL_INFO, "Changed to <%s>\n", name);
 197                         }
 198                 }
 199         }
 200
 201         /* determine local or remote type, see citadel.h */
 202         at = haschar(name, '@');
 203         if (at == 0) return(MES_LOCAL);         /* no @'s - local address */
 204         if (at > 1) return(MES_ERROR);          /* >1 @'s - invalid address */
 205         remove_any_whitespace_to_the_left_or_right_of_at_symbol(name);
 206
 207         /* figure out the delivery mode */
 208         extract_token(node, name, 1, '@', sizeof node);
 209
 210         /* If there are one or more dots in the nodename, we assume that it
 211          * is an FQDN and will attempt SMTP delivery to the Internet.
 212          */
 213         if (haschar(node, '.') > 0) {
 214                 return(MES_INTERNET);
 215         }
 216
 217         /* Otherwise we look in the IGnet maps for a valid Citadel node.
 218          * Try directly-connected nodes first...
 219          */
 220         ignetcfg = CtdlGetSysConfig(IGNETCFG);
 221         for (i=0; i<num_tokens(ignetcfg, '\n'); ++i) {
 222                 extract_token(buf, ignetcfg, i, '\n', sizeof buf);
 223                 extract_token(testnode, buf, 0, '|', sizeof testnode);
 224                 if (!strcasecmp(node, testnode)) {
 225                         free(ignetcfg);
 226                         return(MES_IGNET);
 227                 }
 228         }
 229         free(ignetcfg);
 230
 231         /*
 232          * Then try nodes that are two or more hops away.
 233          */
 234         ignetmap = CtdlGetSysConfig(IGNETMAP);
 235         for (i=0; i<num_tokens(ignetmap, '\n'); ++i) {
 236                 extract_token(buf, ignetmap, i, '\n', sizeof buf);
 237                 extract_token(testnode, buf, 0, '|', sizeof testnode);
 238                 if (!strcasecmp(node, testnode)) {
 239                         free(ignetmap);
 240                         return(MES_IGNET);
 241                 }
 242         }
 243         free(ignetmap);
 244
 245         /* If we get to this point it's an invalid node name */
 246         return (MES_ERROR);
 247 }
 248
 249
 250 /*
 251  * Back end for the MSGS command: output message number only.
 252  */
 253 void simple_listing(long msgnum, void *userdata)
 254 {
 255         cprintf("%ld\n", msgnum);
 256 }
 257
 258
 259
 260 /*
 261  * Back end for the MSGS command: output header summary.
 262  */
 263 void headers_listing(long msgnum, void *userdata)
 264 {
 265         struct CtdlMessage *msg;
 266
 267         msg = CtdlFetchMessage(msgnum, 0);
 268         if (msg == NULL) {
 269                 cprintf("%ld|0|||||\n", msgnum);
 270                 return;
 271         }
 272
 273         cprintf("%ld|%s|%s|%s|%s|%s|\n",
 274                 msgnum,
 275                 (msg->cm_fields['T'] ? msg->cm_fields['T'] : "0"),
 276                 (msg->cm_fields['A'] ? msg->cm_fields['A'] : ""),
 277                 (msg->cm_fields['N'] ? msg->cm_fields['N'] : ""),
 278                 (msg->cm_fields['F'] ? msg->cm_fields['F'] : ""),
 279                 (msg->cm_fields['U'] ? msg->cm_fields['U'] : "")
 280         );
 281         CtdlFreeMessage(msg);
 282 }
 283
 284
 285
 286 /* Determine if a given message matches the fields in a message template.
 287  * Return 0 for a successful match.
 288  */
 289 int CtdlMsgCmp(struct CtdlMessage *msg, struct CtdlMessage *template) {
 290         int i;
 291
 292         /* If there aren't any fields in the template, all messages will
 293          * match.
 294          */
 295         if (template == NULL) return(0);
 296
 297         /* Null messages are bogus. */
 298         if (msg == NULL) return(1);
 299
 300         for (i='A'; i<='Z'; ++i) {
 301                 if (template->cm_fields[i] != NULL) {
 302                         if (msg->cm_fields[i] == NULL) {
 303                                 /* Considered equal if temmplate is empty string */
 304                                 if (IsEmptyStr(template->cm_fields[i])) continue;
 305                                 return 1;
 306                         }
 307                         if (strcasecmp(msg->cm_fields[i],
 308                                 template->cm_fields[i])) return 1;
 309                 }
 310         }
 311
 312         /* All compares succeeded: we have a match! */
 313         return 0;
 314 }
 315
 316
 317
 318 /*
 319  * Retrieve the "seen" message list for the current room.
 320  */
 321 void CtdlGetSeen(char *buf, int which_set) {
 322         struct visit vbuf;
 323
 324         /* Learn about the user and room in question */
 325         CtdlGetRelationship(&vbuf, &CC->user, &CC->room);
 326
 327         if (which_set == ctdlsetseen_seen)
 328                 safestrncpy(buf, vbuf.v_seen, SIZ);
 329         if (which_set == ctdlsetseen_answered)
 330                 safestrncpy(buf, vbuf.v_answered, SIZ);
 331 }
 332
 333
 334
 335 /*
 336  * Manipulate the "seen msgs" string (or other message set strings)
 337  */
 338 void CtdlSetSeen(long *target_msgnums, int num_target_msgnums,
 339                 int target_setting, int which_set,
 340                 struct ctdluser *which_user, struct ctdlroom *which_room) {
 341         struct cdbdata *cdbfr;
 342         int i, k;
 343         int is_seen = 0;
 344         int was_seen = 0;
 345         long lo = (-1L);
 346         long hi = (-1L);
 347         struct visit vbuf;
 348         long *msglist;
 349         int num_msgs = 0;
 350         StrBuf *vset;
 351         StrBuf *setstr;
 352         StrBuf *lostr;
 353         StrBuf *histr;
 354         const char *pvset;
 355         char *is_set;   /* actually an array of booleans */
 356         int w = 0;
 357
 358         /* Don't bother doing *anything* if we were passed a list of zero messages */
 359         if (num_target_msgnums < 1) {
 360                 return;
 361         }
 362
 363         /* If no room was specified, we go with the current room. */
 364         if (!which_room) {
 365                 which_room = &CC->room;
 366         }
 367
 368         /* If no user was specified, we go with the current user. */
 369         if (!which_user) {
 370                 which_user = &CC->user;
 371         }
 372
 373         CtdlLogPrintf(CTDL_DEBUG, "CtdlSetSeen(%d msgs starting with %ld, %s, %d) in <%s>\n",
 374                 num_target_msgnums, target_msgnums[0],
 375                 (target_setting ? "SET" : "CLEAR"),
 376                 which_set,
 377                 which_room->QRname);
 378
 379         /* Learn about the user and room in question */
 380         CtdlGetRelationship(&vbuf, which_user, which_room);
 381
 382         /* Load the message list */
 383         cdbfr = cdb_fetch(CDB_MSGLISTS, &which_room->QRnumber, sizeof(long));
 384         if (cdbfr != NULL) {
 385                 msglist = (long *) cdbfr->ptr;
 386                 cdbfr->ptr = NULL;      /* CtdlSetSeen() now owns this memory */
 387                 num_msgs = cdbfr->len / sizeof(long);
 388                 cdb_free(cdbfr);
 389         } else {
 390                 return; /* No messages at all?  No further action. */
 391         }
 392
 393         is_set = malloc(num_msgs * sizeof(char));
 394         memset(is_set, 0, (num_msgs * sizeof(char)) );
 395
 396         /* Decide which message set we're manipulating */
 397         switch(which_set) {
 398         case ctdlsetseen_seen:
 399                 vset = NewStrBufPlain(vbuf.v_seen, -1);
 400                 break;
 401         case ctdlsetseen_answered:
 402                 vset = NewStrBufPlain(vbuf.v_answered, -1);
 403                 break;
 404         default:
 405                 vset = NewStrBuf();
 406         }
 407
 408
 409 #if 0   /* This is a special diagnostic section.  Do not allow it to run during normal operation. */
 410         CtdlLogPrintf(CTDL_DEBUG, "There are %d messages in the room.\n", num_msgs);
 411         for (i=0; i<num_msgs; ++i) {
 412                 if ((i > 0) && (msglist[i] <= msglist[i-1])) abort();
 413         }
 414         CtdlLogPrintf(CTDL_DEBUG, "We are twiddling %d of them.\n", num_target_msgnums);
 415         for (k=0; k<num_target_msgnums; ++k) {
 416                 if ((k > 0) && (target_msgnums[k] <= target_msgnums[k-1])) abort();
 417         }
 418 #endif
 419
 420         CtdlLogPrintf(CTDL_DEBUG, "before update: %s\n", ChrPtr(vset));
 421
 422         /* Translate the existing sequence set into an array of booleans */
 423         setstr = NewStrBuf();
 424         lostr = NewStrBuf();
 425         histr = NewStrBuf();
 426         pvset = NULL;
 427         while (StrBufExtract_NextToken(setstr, vset, &pvset, ',')) {
 428                 StrBufExtract_token(lostr, setstr, 0, ':');
 429                 if (StrBufNum_tokens(setstr, ':') >= 2) {
 430                         StrBufExtract_token(histr, setstr, 1, ':');
 431                 }
 432                 else {
 433                         FlushStrBuf(histr);
 434                         StrBufAppendBuf(histr, lostr, 0);
 435                 }
 436                 lo = StrTol(lostr);
 437                 if (!strcmp(ChrPtr(histr), "*")) {
 438                         hi = LONG_MAX;
 439                 }
 440                 else {
 441                         hi = StrTol(histr);
 442                 }
 443
 444                 for (i = 0; i < num_msgs; ++i) {
 445                         if ((msglist[i] >= lo) && (msglist[i] <= hi)) {
 446                                 is_set[i] = 1;
 447                         }
 448                 }
 449         }
 450         FreeStrBuf(&setstr);
 451         FreeStrBuf(&lostr);
 452         FreeStrBuf(&histr);
 453
 454
 455         /* Now translate the array of booleans back into a sequence set */
 456         FlushStrBuf(vset);
 457         was_seen = 0;
 458         lo = (-1);
 459         hi = (-1);
 460
 461         for (i=0; i<num_msgs; ++i) {
 462                 is_seen = is_set[i];
 463
 464                 /* Apply changes */
 465                 for (k=0; k<num_target_msgnums; ++k) {
 466                         if (msglist[i] == target_msgnums[k]) {
 467                                 is_seen = target_setting;
 468                         }
 469                 }
 470
 471                 w = 0;  /* set to 1 if we write something to the string */
 472
 473                 if ((was_seen == 0) && (is_seen == 1)) {
 474                         lo = msglist[i];
 475                 }
 476                 else if ((was_seen == 1) && (is_seen == 0)) {
 477                         hi = msglist[i-1];
 478                         w = 1;
 479
 480                         if (StrLength(vset) > 0) {
 481                                 StrBufAppendBufPlain(vset, HKEY(","), 0);
 482                         }
 483                         if (lo == hi) {
 484                                 StrBufAppendPrintf(vset, "%ld", hi);
 485                         }
 486                         else {
 487                                 StrBufAppendPrintf(vset, "%ld:%ld", lo, hi);
 488                         }
 489                 }
 490                 else if ((is_seen) && (i == num_msgs - 1)) {
 491                         w = 1;
 492                         if (StrLength(vset) > 0) {
 493                                 StrBufAppendBufPlain(vset, HKEY(","), 0);
 494                         }
 495                         if ((i==0) || (was_seen == 0)) {
 496                                 StrBufAppendPrintf(vset, "%ld", msglist[i]);
 497                         }
 498                         else {
 499                                 StrBufAppendPrintf(vset, "%ld:%ld", lo, msglist[i]);
 500                         }
 501                 }
 502
 503                 /* If the string is getting too long, truncate it at the beginning; repeat up to 9 times * /
 504                 if (w) for (j=0; j<9; ++j) {
 505                         if ((StrLength(vset) + 20) > sizeof vset) {
 506                                 remove_token(vset, 0, ',');
 507                                 if (which_set == ctdlsetseen_seen) {
 508                                         char temp[SIZ];
 509                                         sprintf(temp, "1:%ld,", atol(vset)-1L);
 510                                         strcat(temp, vset);
 511                                         strcpy(vset, temp);
 512                                 }
 513                         }
 514                 }
 515                 we don't get to long anymore.
 516                 */
 517
 518                 was_seen = is_seen;
 519         }
 520
 521         while (StrLength(vset) > SIZ)
 522                 StrBufRemove_token(vset, 0, ',');
 523
 524         CtdlLogPrintf(CTDL_DEBUG, " after update: %s\n", ChrPtr(vset));
 525
 526         /* Decide which message set we're manipulating */
 527         switch (which_set) {
 528                 case ctdlsetseen_seen:
 529                         safestrncpy(vbuf.v_seen, ChrPtr(vset), sizeof vbuf.v_seen);
 530                         break;
 531                 case ctdlsetseen_answered:
 532                         safestrncpy(vbuf.v_answered, ChrPtr(vset), sizeof vbuf.v_answered);
 533                         break;
 534         }
 535
 536         free(is_set);
 537         free(msglist);
 538         CtdlSetRelationship(&vbuf, which_user, which_room);
 539         FreeStrBuf(&vset);
 540 }
 541
 542
 543 /*
 544  * API function to perform an operation for each qualifying message in the
 545  * current room.  (Returns the number of messages processed.)
 546  */
 547 int CtdlForEachMessage(int mode, long ref, char *search_string,
 548                         char *content_type,
 549                         struct CtdlMessage *compare,
 550                         void (*CallBack) (long, void *),
 551                         void *userdata)
 552 {
 553
 554         int a, i, j;
 555         struct visit vbuf;
 556         struct cdbdata *cdbfr;
 557         long *msglist = NULL;
 558         int num_msgs = 0;
 559         int num_processed = 0;
 560         long thismsg;
 561         struct MetaData smi;
 562         struct CtdlMessage *msg = NULL;
 563         int is_seen = 0;
 564         long lastold = 0L;
 565         int printed_lastold = 0;
 566         int num_search_msgs = 0;
 567         long *search_msgs = NULL;
 568         regex_t re;
 569         int need_to_free_re = 0;
 570         regmatch_t pm;
 571
 572         if ((content_type) && (!IsEmptyStr(content_type))) {
 573                 regcomp(&re, content_type, 0);
 574                 need_to_free_re = 1;
 575         }
 576
 577         /* Learn about the user and room in question */
 578         getuser(&CC->user, CC->curr_user);
 579         CtdlGetRelationship(&vbuf, &CC->user, &CC->room);
 580
 581         /* Load the message list */
 582         cdbfr = cdb_fetch(CDB_MSGLISTS, &CC->room.QRnumber, sizeof(long));
 583         if (cdbfr != NULL) {
 584                 msglist = (long *) cdbfr->ptr;
 585                 num_msgs = cdbfr->len / sizeof(long);
 586         } else {
 587                 if (need_to_free_re) regfree(&re);
 588                 return 0;       /* No messages at all?  No further action. */
 589         }
 590
 591
 592         /*
 593          * Now begin the traversal.
 594          */
 595         if (num_msgs > 0) for (a = 0; a < num_msgs; ++a) {
 596
 597                 /* If the caller is looking for a specific MIME type, filter
 598                  * out all messages which are not of the type requested.
 599                  */
 600                 if ((content_type != NULL) && (!IsEmptyStr(content_type))) {
 601
 602                         /* This call to GetMetaData() sits inside this loop
 603                          * so that we only do the extra database read per msg
 604                          * if we need to.  Doing the extra read all the time
 605                          * really kills the server.  If we ever need to use
 606                          * metadata for another search criterion, we need to
 607                          * move the read somewhere else -- but still be smart
 608                          * enough to only do the read if the caller has
 609                          * specified something that will need it.
 610                          */
 611                         GetMetaData(&smi, msglist[a]);
 612
 613                         /* if (strcasecmp(smi.meta_content_type, content_type)) { old non-regex way */
 614                         if (regexec(&re, smi.meta_content_type, 1, &pm, 0) != 0) {
 615                                 msglist[a] = 0L;
 616                         }
 617                 }
 618         }
 619
 620         num_msgs = sort_msglist(msglist, num_msgs);
 621
 622         /* If a template was supplied, filter out the messages which
 623          * don't match.  (This could induce some delays!)
 624          */
 625         if (num_msgs > 0) {
 626                 if (compare != NULL) {
 627                         for (a = 0; a < num_msgs; ++a) {
 628                                 msg = CtdlFetchMessage(msglist[a], 1);
 629                                 if (msg != NULL) {
 630                                         if (CtdlMsgCmp(msg, compare)) {
 631                                                 msglist[a] = 0L;
 632                                         }
 633                                         CtdlFreeMessage(msg);
 634                                 }
 635                         }
 636                 }
 637         }
 638
 639         /* If a search string was specified, get a message list from
 640          * the full text index and remove messages which aren't on both
 641          * lists.
 642          *
 643          * How this works:
 644          * Since the lists are sorted and strictly ascending, and the
 645          * output list is guaranteed to be shorter than or equal to the
 646          * input list, we overwrite the bottom of the input list.  This
 647          * eliminates the need to memmove big chunks of the list over and
 648          * over again.
 649          */
 650         if ( (num_msgs > 0) && (mode == MSGS_SEARCH) && (search_string) ) {
 651
 652                 /* Call search module via hook mechanism.
 653                  * NULL means use any search function available.
 654                  * otherwise replace with a char * to name of search routine
 655                  */
 656                 CtdlModuleDoSearch(&num_search_msgs, &search_msgs, search_string, "fulltext");
 657
 658                 if (num_search_msgs > 0) {
 659
 660                         int orig_num_msgs;
 661
 662                         orig_num_msgs = num_msgs;
 663                         num_msgs = 0;
 664                         for (i=0; i<orig_num_msgs; ++i) {
 665                                 for (j=0; j<num_search_msgs; ++j) {
 666                                         if (msglist[i] == search_msgs[j]) {
 667                                                 msglist[num_msgs++] = msglist[i];
 668                                         }
 669                                 }
 670                         }
 671                 }
 672                 else {
 673                         num_msgs = 0;   /* No messages qualify */
 674                 }
 675                 if (search_msgs != NULL) free(search_msgs);
 676
 677                 /* Now that we've purged messages which don't contain the search
 678                  * string, treat a MSGS_SEARCH just like a MSGS_ALL from this
 679                  * point on.
 680                  */
 681                 mode = MSGS_ALL;
 682         }
 683
 684         /*
 685          * Now iterate through the message list, according to the
 686          * criteria supplied by the caller.
 687          */
 688         if (num_msgs > 0)
 689                 for (a = 0; a < num_msgs; ++a) {
 690                         thismsg = msglist[a];
 691                         if (mode == MSGS_ALL) {
 692                                 is_seen = 0;
 693                         }
 694                         else {
 695                                 is_seen = is_msg_in_sequence_set(
 696                                                         vbuf.v_seen, thismsg);
 697                                 if (is_seen) lastold = thismsg;
 698                         }
 699                         if ((thismsg > 0L)
 700                             && (
 701
 702                                        (mode == MSGS_ALL)
 703                                        || ((mode == MSGS_OLD) && (is_seen))
 704                                        || ((mode == MSGS_NEW) && (!is_seen))
 705                                        || ((mode == MSGS_LAST) && (a >= (num_msgs - ref)))
 706                                    || ((mode == MSGS_FIRST) && (a < ref))
 707                                 || ((mode == MSGS_GT) && (thismsg > ref))
 708                                 || ((mode == MSGS_EQ) && (thismsg == ref))
 709                             )
 710                             ) {
 711                                 if ((mode == MSGS_NEW) && (CC->user.flags & US_LASTOLD) && (lastold > 0L) && (printed_lastold == 0) && (!is_seen)) {
 712                                         if (CallBack)
 713                                                 CallBack(lastold, userdata);
 714                                         printed_lastold = 1;
 715                                         ++num_processed;
 716                                 }
 717                                 if (CallBack) CallBack(thismsg, userdata);
 718                                 ++num_processed;
 719                         }
 720                 }
 721         cdb_free(cdbfr);        /* Clean up */
 722         if (need_to_free_re) regfree(&re);
 723         return num_processed;
 724 }
 725
 726
 727
 728 /*
 729  * cmd_msgs()  -  get list of message #'s in this room
 730  *              implements the MSGS server command using CtdlForEachMessage()
 731  */
 732 void cmd_msgs(char *cmdbuf)
 733 {
 734         int mode = 0;
 735         char which[16];
 736         char buf[256];
 737         char tfield[256];
 738         char tvalue[256];
 739         int cm_ref = 0;
 740         int i;
 741         int with_template = 0;
 742         struct CtdlMessage *template = NULL;
 743         int with_headers = 0;
 744         char search_string[1024];
 745
 746         extract_token(which, cmdbuf, 0, '|', sizeof which);
 747         cm_ref = extract_int(cmdbuf, 1);
 748         extract_token(search_string, cmdbuf, 1, '|', sizeof search_string);
 749         with_template = extract_int(cmdbuf, 2);
 750         with_headers = extract_int(cmdbuf, 3);
 751
 752         strcat(which, "   ");
 753         if (!strncasecmp(which, "OLD", 3))
 754                 mode = MSGS_OLD;
 755         else if (!strncasecmp(which, "NEW", 3))
 756                 mode = MSGS_NEW;
 757         else if (!strncasecmp(which, "FIRST", 5))
 758                 mode = MSGS_FIRST;
 759         else if (!strncasecmp(which, "LAST", 4))
 760                 mode = MSGS_LAST;
 761         else if (!strncasecmp(which, "GT", 2))
 762                 mode = MSGS_GT;
 763         else if (!strncasecmp(which, "SEARCH", 6))
 764                 mode = MSGS_SEARCH;
 765         else
 766                 mode = MSGS_ALL;
 767
 768         if ((!(CC->logged_in)) && (!(CC->internal_pgm))) {
 769                 cprintf("%d not logged in\n", ERROR + NOT_LOGGED_IN);
 770                 return;
 771         }
 772
 773         if ( (mode == MSGS_SEARCH) && (!config.c_enable_fulltext) ) {
 774                 cprintf("%d Full text index is not enabled on this server.\n",
 775                         ERROR + CMD_NOT_SUPPORTED);
 776                 return;
 777         }
 778
 779         if (with_template) {
 780                 unbuffer_output();
 781                 cprintf("%d Send template then receive message list\n",
 782                         START_CHAT_MODE);
 783                 template = (struct CtdlMessage *)
 784                         malloc(sizeof(struct CtdlMessage));
 785                 memset(template, 0, sizeof(struct CtdlMessage));
 786                 template->cm_magic = CTDLMESSAGE_MAGIC;
 787                 template->cm_anon_type = MES_NORMAL;
 788
 789                 while(client_getln(buf, sizeof buf) >= 0 && strcmp(buf,"000")) {
 790                         extract_token(tfield, buf, 0, '|', sizeof tfield);
 791                         extract_token(tvalue, buf, 1, '|', sizeof tvalue);
 792                         for (i='A'; i<='Z'; ++i) if (msgkeys[i]!=NULL) {
 793                                 if (!strcasecmp(tfield, msgkeys[i])) {
 794                                         template->cm_fields[i] =
 795                                                 strdup(tvalue);
 796                                 }
 797                         }
 798                 }
 799                 buffer_output();
 800         }
 801         else {
 802                 cprintf("%d  \n", LISTING_FOLLOWS);
 803         }
 804
 805         CtdlForEachMessage(mode,
 806                         ( (mode == MSGS_SEARCH) ? 0 : cm_ref ),
 807                         ( (mode == MSGS_SEARCH) ? search_string : NULL ),
 808                         NULL,
 809                         template,
 810                         (with_headers ? headers_listing : simple_listing),
 811                         NULL
 812         );
 813         if (template != NULL) CtdlFreeMessage(template);
 814         cprintf("000\n");
 815 }
 816
 817
 818
 819
 820 /*
 821  * help_subst()  -  support routine for help file viewer
 822  */
 823 void help_subst(char *strbuf, char *source, char *dest)
 824 {
 825         char workbuf[SIZ];
 826         int p;
 827
 828         while (p = pattern2(strbuf, source), (p >= 0)) {
 829                 strcpy(workbuf, &strbuf[p + strlen(source)]);
 830                 strcpy(&strbuf[p], dest);
 831                 strcat(strbuf, workbuf);
 832         }
 833 }
 834
 835
 836 void do_help_subst(char *buffer)
 837 {
 838         char buf2[16];
 839
 840         help_subst(buffer, "^nodename", config.c_nodename);
 841         help_subst(buffer, "^humannode", config.c_humannode);
 842         help_subst(buffer, "^fqdn", config.c_fqdn);
 843         help_subst(buffer, "^username", CC->user.fullname);
 844         snprintf(buf2, sizeof buf2, "%ld", CC->user.usernum);
 845         help_subst(buffer, "^usernum", buf2);
 846         help_subst(buffer, "^sysadm", config.c_sysadm);
 847         help_subst(buffer, "^variantname", CITADEL);
 848         snprintf(buf2, sizeof buf2, "%d", config.c_maxsessions);
 849         help_subst(buffer, "^maxsessions", buf2);
 850         help_subst(buffer, "^bbsdir", ctdl_message_dir);
 851 }
 852
 853
 854
 855 /*
 856  * memfmout()  -  Citadel text formatter and paginator.
 857  *           Although the original purpose of this routine was to format
 858  *           text to the reader's screen width, all we're really using it
 859  *           for here is to format text out to 80 columns before sending it
 860  *           to the client.  The client software may reformat it again.
 861  */
 862 void memfmout(
 863         char *mptr,             /* where are we going to get our text from? */
 864         char subst,             /* nonzero if we should do substitutions */
 865         char *nl)               /* string to terminate lines with */
 866 {
 867         int a, b, c;
 868         int real = 0;
 869         int old = 0;
 870         cit_uint8_t ch;
 871         char aaa[140];
 872         char buffer[SIZ];
 873         static int width = 80;
 874
 875         strcpy(aaa, "");
 876         old = 255;
 877         strcpy(buffer, "");
 878         c = 1;                  /* c is the current pos */
 879
 880         do {
 881                 if (subst) {
 882                         while (ch = *mptr, ((ch != 0) && (strlen(buffer) < 126))) {
 883                                 ch = *mptr++;
 884                                 buffer[strlen(buffer) + 1] = 0;
 885                                 buffer[strlen(buffer)] = ch;
 886                         }
 887
 888                         if (buffer[0] == '^')
 889                                 do_help_subst(buffer);
 890
 891                         buffer[strlen(buffer) + 1] = 0;
 892                         a = buffer[0];
 893                         strcpy(buffer, &buffer[1]);
 894                 } else {
 895                         ch = *mptr++;
 896                 }
 897
 898                 old = real;
 899                 real = ch;
 900
 901                 if (((ch == 13) || (ch == 10)) && (old != 13) && (old != 10)) {
 902                         ch = 32;
 903                 }
 904                 if (((old == 13) || (old == 10)) && (isspace(real))) {
 905                         cprintf("%s", nl);
 906                         c = 1;
 907                 }
 908                 if (ch > 32) {
 909                         if (((strlen(aaa) + c) > (width - 5)) && (strlen(aaa) > (width - 5))) {
 910                                 cprintf("%s%s", nl, aaa);
 911                                 c = strlen(aaa);
 912                                 aaa[0] = 0;
 913                         }
 914                         b = strlen(aaa);
 915                         aaa[b] = ch;
 916                         aaa[b + 1] = 0;
 917                 }
 918                 if (ch == 32) {
 919                         if ((strlen(aaa) + c) > (width - 5)) {
 920                                 cprintf("%s", nl);
 921                                 c = 1;
 922                         }
 923                         cprintf("%s ", aaa);
 924                         ++c;
 925                         c = c + strlen(aaa);
 926                         strcpy(aaa, "");
 927                 }
 928                 if ((ch == 13) || (ch == 10)) {
 929                         cprintf("%s%s", aaa, nl);
 930                         c = 1;
 931                         strcpy(aaa, "");
 932                 }
 933
 934         } while (ch > 0);
 935
 936         cprintf("%s%s", aaa, nl);
 937 }
 938
 939
 940
 941 /*
 942  * Callback function for mime parser that simply lists the part
 943  */
 944 void list_this_part(char *name, char *filename, char *partnum, char *disp,
 945                     void *content, char *cbtype, char *cbcharset, size_t length, char *encoding,
 946                     char *cbid, void *cbuserdata)
 947 {
 948         struct ma_info *ma;
 949
 950         ma = (struct ma_info *)cbuserdata;
 951         if (ma->is_ma == 0) {
 952                 cprintf("part=%s|%s|%s|%s|%s|%ld|%s\n",
 953                         name, filename, partnum, disp, cbtype, (long)length, cbid);
 954         }
 955 }
 956
 957 /*
 958  * Callback function for multipart prefix
 959  */
 960 void list_this_pref(char *name, char *filename, char *partnum, char *disp,
 961                     void *content, char *cbtype, char *cbcharset, size_t length, char *encoding,
 962                     char *cbid, void *cbuserdata)
 963 {
 964         struct ma_info *ma;
 965
 966         ma = (struct ma_info *)cbuserdata;
 967         if (!strcasecmp(cbtype, "multipart/alternative")) {
 968                 ++ma->is_ma;
 969         }
 970
 971         if (ma->is_ma == 0) {
 972                 cprintf("pref=%s|%s\n", partnum, cbtype);
 973         }
 974 }
 975
 976 /*
 977  * Callback function for multipart sufffix
 978  */
 979 void list_this_suff(char *name, char *filename, char *partnum, char *disp,
 980                     void *content, char *cbtype, char *cbcharset, size_t length, char *encoding,
 981                     char *cbid, void *cbuserdata)
 982 {
 983         struct ma_info *ma;
 984
 985         ma = (struct ma_info *)cbuserdata;
 986         if (ma->is_ma == 0) {
 987                 cprintf("suff=%s|%s\n", partnum, cbtype);
 988         }
 989         if (!strcasecmp(cbtype, "multipart/alternative")) {
 990                 --ma->is_ma;
 991         }
 992 }
 993
 994
 995 /*
 996  * Callback function for mime parser that opens a section for downloading
 997  */
 998 void mime_download(char *name, char *filename, char *partnum, char *disp,
 999                    void *content, char *cbtype, char *cbcharset, size_t length,
1000                    char *encoding, char *cbid, void *cbuserdata)
1001 {
1002
1003         /* Silently go away if there's already a download open. */
1004         if (CC->download_fp != NULL)
1005                 return;
1006
1007         if (
1008                 (!IsEmptyStr(partnum) && (!strcasecmp(CC->download_desired_section, partnum)))
1009         ||      (!IsEmptyStr(cbid) && (!strcasecmp(CC->download_desired_section, cbid)))
1010         ) {
1011                 CC->download_fp = tmpfile();
1012                 if (CC->download_fp == NULL)
1013                         return;
1014
1015                 fwrite(content, length, 1, CC->download_fp);
1016                 fflush(CC->download_fp);
1017                 rewind(CC->download_fp);
1018
1019                 OpenCmdResult(filename, cbtype);
1020         }
1021 }
1022
1023
1024
1025 /*
1026  * Callback function for mime parser that outputs a section all at once.
1027  * We can specify the desired section by part number *or* content-id.
1028  */
1029 void mime_spew_section(char *name, char *filename, char *partnum, char *disp,
1030                    void *content, char *cbtype, char *cbcharset, size_t length,
1031                    char *encoding, char *cbid, void *cbuserdata)
1032 {
1033         int *found_it = (int *)cbuserdata;
1034
1035         if (
1036                 (!IsEmptyStr(partnum) && (!strcasecmp(CC->download_desired_section, partnum)))
1037         ||      (!IsEmptyStr(cbid) && (!strcasecmp(CC->download_desired_section, cbid)))
1038         ) {
1039                 *found_it = 1;
1040                 cprintf("%d %d|-1|%s|%s\n",
1041                         BINARY_FOLLOWS,
1042                         (int)length,
1043                         filename,
1044                         cbtype
1045                 );
1046                 client_write(content, length);
1047         }
1048 }
1049
1050
1051
1052 /*
1053  * Load a message from disk into memory.
1054  * This is used by CtdlOutputMsg() and other fetch functions.
1055  *
1056  * NOTE: Caller is responsible for freeing the returned CtdlMessage struct
1057  *       using the CtdlMessageFree() function.
1058  */
1059 struct CtdlMessage *CtdlFetchMessage(long msgnum, int with_body)
1060 {
1061         struct cdbdata *dmsgtext;
1062         struct CtdlMessage *ret = NULL;
1063         char *mptr;
1064         char *upper_bound;
1065         cit_uint8_t ch;
1066         cit_uint8_t field_header;
1067
1068         CtdlLogPrintf(CTDL_DEBUG, "CtdlFetchMessage(%ld, %d)\n", msgnum, with_body);
1069
1070         dmsgtext = cdb_fetch(CDB_MSGMAIN, &msgnum, sizeof(long));
1071         if (dmsgtext == NULL) {
1072                 return NULL;
1073         }
1074         mptr = dmsgtext->ptr;
1075         upper_bound = mptr + dmsgtext->len;
1076
1077         /* Parse the three bytes that begin EVERY message on disk.
1078          * The first is always 0xFF, the on-disk magic number.
1079          * The second is the anonymous/public type byte.
1080          * The third is the format type byte (vari, fixed, or MIME).
1081          */
1082         ch = *mptr++;
1083         if (ch != 255) {
1084                 CtdlLogPrintf(CTDL_ERR, "Message %ld appears to be corrupted.\n", msgnum);
1085                 cdb_free(dmsgtext);
1086                 return NULL;
1087         }
1088         ret = (struct CtdlMessage *) malloc(sizeof(struct CtdlMessage));
1089         memset(ret, 0, sizeof(struct CtdlMessage));
1090
1091         ret->cm_magic = CTDLMESSAGE_MAGIC;
1092         ret->cm_anon_type = *mptr++;    /* Anon type byte */
1093         ret->cm_format_type = *mptr++;  /* Format type byte */
1094
1095         /*
1096          * The rest is zero or more arbitrary fields.  Load them in.
1097          * We're done when we encounter either a zero-length field or
1098          * have just processed the 'M' (message text) field.
1099          */
1100         do {
1101                 if (mptr >= upper_bound) {
1102                         break;
1103                 }
1104                 field_header = *mptr++;
1105                 ret->cm_fields[field_header] = strdup(mptr);
1106
1107                 while (*mptr++ != 0);   /* advance to next field */
1108
1109         } while ((mptr < upper_bound) && (field_header != 'M'));
1110
1111         cdb_free(dmsgtext);
1112
1113         /* Always make sure there's something in the msg text field.  If
1114          * it's NULL, the message text is most likely stored separately,
1115          * so go ahead and fetch that.  Failing that, just set a dummy
1116          * body so other code doesn't barf.
1117          */
1118         if ( (ret->cm_fields['M'] == NULL) && (with_body) ) {
1119                 dmsgtext = cdb_fetch(CDB_BIGMSGS, &msgnum, sizeof(long));
1120                 if (dmsgtext != NULL) {
1121                         ret->cm_fields['M'] = strdup(dmsgtext->ptr);
1122                         cdb_free(dmsgtext);
1123                 }
1124         }
1125         if (ret->cm_fields['M'] == NULL) {
1126                 ret->cm_fields['M'] = strdup("\r\n\r\n (no text)\r\n");
1127         }
1128
1129         /* Perform "before read" hooks (aborting if any return nonzero) */
1130         if (PerformMessageHooks(ret, EVT_BEFOREREAD) > 0) {
1131                 CtdlFreeMessage(ret);
1132                 return NULL;
1133         }
1134
1135         return (ret);
1136 }
1137
1138
1139 /*
1140  * Returns 1 if the supplied pointer points to a valid Citadel message.
1141  * If the pointer is NULL or the magic number check fails, returns 0.
1142  */
1143 int is_valid_message(struct CtdlMessage *msg) {
1144         if (msg == NULL)
1145                 return 0;
1146         if ((msg->cm_magic) != CTDLMESSAGE_MAGIC) {
1147                 CtdlLogPrintf(CTDL_WARNING, "is_valid_message() -- self-check failed\n");
1148                 return 0;
1149         }
1150         return 1;
1151 }
1152
1153
1154 /*
1155  * 'Destructor' for struct CtdlMessage
1156  */
1157 void CtdlFreeMessage(struct CtdlMessage *msg)
1158 {
1159         int i;
1160
1161         if (is_valid_message(msg) == 0)
1162         {
1163                 if (msg != NULL) free (msg);
1164                 return;
1165         }
1166
1167         for (i = 0; i < 256; ++i)
1168                 if (msg->cm_fields[i] != NULL) {
1169                         free(msg->cm_fields[i]);
1170                 }
1171
1172         msg->cm_magic = 0;      /* just in case */
1173         free(msg);
1174 }
1175
1176
1177 /*
1178  * Pre callback function for multipart/alternative
1179  *
1180  * NOTE: this differs from the standard behavior for a reason.  Normally when
1181  *       displaying multipart/alternative you want to show the _last_ usable
1182  *       format in the message.  Here we show the _first_ one, because it's
1183  *       usually text/plain.  Since this set of functions is designed for text
1184  *       output to non-MIME-aware clients, this is the desired behavior.
1185  *
1186  */
1187 void fixed_output_pre(char *name, char *filename, char *partnum, char *disp,
1188                 void *content, char *cbtype, char *cbcharset, size_t length, char *encoding,
1189                 char *cbid, void *cbuserdata)
1190 {
1191         struct ma_info *ma;
1192
1193         ma = (struct ma_info *)cbuserdata;
1194         CtdlLogPrintf(CTDL_DEBUG, "fixed_output_pre() type=<%s>\n", cbtype);
1195         if (!strcasecmp(cbtype, "multipart/alternative")) {
1196                 ++ma->is_ma;
1197                 ma->did_print = 0;
1198         }
1199         if (!strcasecmp(cbtype, "message/rfc822")) {
1200                 ++ma->freeze;
1201         }
1202 }
1203
1204 /*
1205  * Post callback function for multipart/alternative
1206  */
1207 void fixed_output_post(char *name, char *filename, char *partnum, char *disp,
1208                 void *content, char *cbtype, char *cbcharset, size_t length,
1209                 char *encoding, char *cbid, void *cbuserdata)
1210 {
1211         struct ma_info *ma;
1212
1213         ma = (struct ma_info *)cbuserdata;
1214         CtdlLogPrintf(CTDL_DEBUG, "fixed_output_post() type=<%s>\n", cbtype);
1215         if (!strcasecmp(cbtype, "multipart/alternative")) {
1216                 --ma->is_ma;
1217                 ma->did_print = 0;
1218         }
1219         if (!strcasecmp(cbtype, "message/rfc822")) {
1220                 --ma->freeze;
1221         }
1222 }
1223
1224 /*
1225  * Inline callback function for mime parser that wants to display text
1226  */
1227 void fixed_output(char *name, char *filename, char *partnum, char *disp,
1228                 void *content, char *cbtype, char *cbcharset, size_t length,
1229                 char *encoding, char *cbid, void *cbuserdata)
1230 {
1231         char *ptr;
1232         char *wptr;
1233         size_t wlen;
1234         struct ma_info *ma;
1235
1236         ma = (struct ma_info *)cbuserdata;
1237
1238         CtdlLogPrintf(CTDL_DEBUG,
1239                 "fixed_output() part %s: %s (%s) (%ld bytes)\n",
1240                 partnum, filename, cbtype, (long)length);
1241
1242         /*
1243          * If we're in the middle of a multipart/alternative scope and
1244          * we've already printed another section, skip this one.
1245          */
1246         if ( (ma->is_ma) && (ma->did_print) ) {
1247                 CtdlLogPrintf(CTDL_DEBUG, "Skipping part %s (%s)\n", partnum, cbtype);
1248                 return;
1249         }
1250         ma->did_print = 1;
1251
1252         if ( (!strcasecmp(cbtype, "text/plain"))
1253            || (IsEmptyStr(cbtype)) ) {
1254                 wptr = content;
1255                 if (length > 0) {
1256                         client_write(wptr, length);
1257                         if (wptr[length-1] != '\n') {
1258                                 cprintf("\n");
1259                         }
1260                 }
1261                 return;
1262         }
1263
1264         if (!strcasecmp(cbtype, "text/html")) {
1265                 ptr = html_to_ascii(content, length, 80, 0);
1266                 wlen = strlen(ptr);
1267                 client_write(ptr, wlen);
1268                 if (ptr[wlen-1] != '\n') {
1269                         cprintf("\n");
1270                 }
1271                 free(ptr);
1272                 return;
1273         }
1274
1275         if (ma->use_fo_hooks) {
1276                 if (PerformFixedOutputHooks(cbtype, content, length)) {
1277                 /* above function returns nonzero if it handled the part */
1278                         return;
1279                 }
1280         }
1281
1282         if (strncasecmp(cbtype, "multipart/", 10)) {
1283                 cprintf("Part %s: %s (%s) (%ld bytes)\r\n",
1284                         partnum, filename, cbtype, (long)length);
1285                 return;
1286         }
1287 }
1288
1289 /*
1290  * The client is elegant and sophisticated and wants to be choosy about
1291  * MIME content types, so figure out which multipart/alternative part
1292  * we're going to send.
1293  *
1294  * We use a system of weights.  When we find a part that matches one of the
1295  * MIME types we've declared as preferential, we can store it in ma->chosen_part
1296  * and then set ma->chosen_pref to that MIME type's position in our preference
1297  * list.  If we then hit another match, we only replace the first match if
1298  * the preference value is lower.
1299  */
1300 void choose_preferred(char *name, char *filename, char *partnum, char *disp,
1301                 void *content, char *cbtype, char *cbcharset, size_t length,
1302                 char *encoding, char *cbid, void *cbuserdata)
1303 {
1304         char buf[1024];
1305         int i;
1306         struct ma_info *ma;
1307
1308         ma = (struct ma_info *)cbuserdata;
1309
1310         // NOTE: REMOVING THIS CONDITIONAL FIXES BUG 220
1311         //       http://bugzilla.citadel.org/show_bug.cgi?id=220
1312         // I don't know if there are any side effects!  Please TEST TEST TEST
1313         //if (ma->is_ma > 0) {
1314
1315         for (i=0; i<num_tokens(CC->preferred_formats, '|'); ++i) {
1316                 extract_token(buf, CC->preferred_formats, i, '|', sizeof buf);
1317                 if ( (!strcasecmp(buf, cbtype)) && (!ma->freeze) ) {
1318                         if (i < ma->chosen_pref) {
1319                                 CtdlLogPrintf(CTDL_DEBUG, "Setting chosen part: <%s>\n", partnum);
1320                                 safestrncpy(ma->chosen_part, partnum, sizeof ma->chosen_part);
1321                                 ma->chosen_pref = i;
1322                         }
1323                 }
1324         }
1325 }
1326
1327 /*
1328  * Now that we've chosen our preferred part, output it.
1329  */
1330 void output_preferred(char *name, char *filename, char *partnum, char *disp,
1331                 void *content, char *cbtype, char *cbcharset, size_t length,
1332                 char *encoding, char *cbid, void *cbuserdata)
1333 {
1334         int i;
1335         char buf[128];
1336         int add_newline = 0;
1337         char *text_content;
1338         struct ma_info *ma;
1339
1340         ma = (struct ma_info *)cbuserdata;
1341
1342         /* This is not the MIME part you're looking for... */
1343         if (strcasecmp(partnum, ma->chosen_part)) return;
1344
1345         /* If the content-type of this part is in our preferred formats
1346          * list, we can simply output it verbatim.
1347          */
1348         for (i=0; i<num_tokens(CC->preferred_formats, '|'); ++i) {
1349                 extract_token(buf, CC->preferred_formats, i, '|', sizeof buf);
1350                 if (!strcasecmp(buf, cbtype)) {
1351                         /* Yeah!  Go!  W00t!! */
1352
1353                         text_content = (char *)content;
1354                         if (text_content[length-1] != '\n') {
1355                                 ++add_newline;
1356                         }
1357                         cprintf("Content-type: %s", cbtype);
1358                         if (!IsEmptyStr(cbcharset)) {
1359                                 cprintf("; charset=%s", cbcharset);
1360                         }
1361                         cprintf("\nContent-length: %d\n",
1362                                 (int)(length + add_newline) );
1363                         if (!IsEmptyStr(encoding)) {
1364                                 cprintf("Content-transfer-encoding: %s\n", encoding);
1365                         }
1366                         else {
1367                                 cprintf("Content-transfer-encoding: 7bit\n");
1368                         }
1369                         cprintf("X-Citadel-MSG4-Partnum: %s\n", partnum);
1370                         cprintf("\n");
1371                         client_write(content, length);
1372                         if (add_newline) cprintf("\n");
1373                         return;
1374                 }
1375         }
1376
1377         /* No translations required or possible: output as text/plain */
1378         cprintf("Content-type: text/plain\n\n");
1379         fixed_output(name, filename, partnum, disp, content, cbtype, cbcharset,
1380                         length, encoding, cbid, cbuserdata);
1381 }
1382
1383
1384 struct encapmsg {
1385         char desired_section[64];
1386         char *msg;
1387         size_t msglen;
1388 };
1389
1390
1391 /*
1392  * Callback function for
1393  */
1394 void extract_encapsulated_message(char *name, char *filename, char *partnum, char *disp,
1395                    void *content, char *cbtype, char *cbcharset, size_t length,
1396                    char *encoding, char *cbid, void *cbuserdata)
1397 {
1398         struct encapmsg *encap;
1399
1400         encap = (struct encapmsg *)cbuserdata;
1401
1402         /* Only proceed if this is the desired section... */
1403         if (!strcasecmp(encap->desired_section, partnum)) {
1404                 encap->msglen = length;
1405                 encap->msg = malloc(length + 2);
1406                 memcpy(encap->msg, content, length);
1407                 return;
1408         }
1409
1410 }
1411
1412
1413
1414
1415 /*
1416  * Get a message off disk.  (returns om_* values found in msgbase.h)
1417  *
1418  */
1419 int CtdlOutputMsg(long msg_num,         /* message number (local) to fetch */
1420                   int mode,             /* how would you like that message? */
1421                   int headers_only,     /* eschew the message body? */
1422                   int do_proto,         /* do Citadel protocol responses? */
1423                   int crlf,             /* Use CRLF newlines instead of LF? */
1424                   char *section,        /* NULL or a message/rfc822 section */
1425                   int flags             /* should the bessage be exported clean? */
1426 ) {
1427         struct CtdlMessage *TheMessage = NULL;
1428         int retcode = om_no_such_msg;
1429         struct encapmsg encap;
1430
1431         CtdlLogPrintf(CTDL_DEBUG, "CtdlOutputMsg() msgnum=%ld, mode=%d, section=%s\n",
1432                 msg_num, mode,
1433                 (section ? section : "<>")
1434         );
1435
1436         if ((!(CC->logged_in)) && (!(CC->internal_pgm))) {
1437                 if (do_proto) cprintf("%d Not logged in.\n",
1438                         ERROR + NOT_LOGGED_IN);
1439                 return(om_not_logged_in);
1440         }
1441
1442         /* FIXME: check message id against msglist for this room */
1443
1444         /*
1445          * Fetch the message from disk.  If we're in HEADERS_FAST mode,
1446          * request that we don't even bother loading the body into memory.
1447          */
1448         if (headers_only == HEADERS_FAST) {
1449                 TheMessage = CtdlFetchMessage(msg_num, 0);
1450         }
1451         else {
1452                 TheMessage = CtdlFetchMessage(msg_num, 1);
1453         }
1454
1455         if (TheMessage == NULL) {
1456                 if (do_proto) cprintf("%d Can't locate msg %ld on disk\n",
1457                         ERROR + MESSAGE_NOT_FOUND, msg_num);
1458                 return(om_no_such_msg);
1459         }
1460
1461         /* Here is the weird form of this command, to process only an
1462          * encapsulated message/rfc822 section.
1463          */
1464         if (section) if (!IsEmptyStr(section)) if (strcmp(section, "0")) {
1465                 memset(&encap, 0, sizeof encap);
1466                 safestrncpy(encap.desired_section, section, sizeof encap.desired_section);
1467                 mime_parser(TheMessage->cm_fields['M'],
1468                         NULL,
1469                         *extract_encapsulated_message,
1470                         NULL, NULL, (void *)&encap, 0
1471                 );
1472                 CtdlFreeMessage(TheMessage);
1473                 TheMessage = NULL;
1474
1475                 if (encap.msg) {
1476                         encap.msg[encap.msglen] = 0;
1477                         TheMessage = convert_internet_message(encap.msg);
1478                         encap.msg = NULL;       /* no free() here, TheMessage owns it now */
1479
1480                         /* Now we let it fall through to the bottom of this
1481                          * function, because TheMessage now contains the
1482                          * encapsulated message instead of the top-level
1483                          * message.  Isn't that neat?
1484                          */
1485
1486                 }
1487                 else {
1488                         if (do_proto) cprintf("%d msg %ld has no part %s\n",
1489                                 ERROR + MESSAGE_NOT_FOUND, msg_num, section);
1490                         retcode = om_no_such_msg;
1491                 }
1492
1493         }
1494
1495         /* Ok, output the message now */
1496         retcode = CtdlOutputPreLoadedMsg(TheMessage, mode, headers_only, do_proto, crlf, flags);
1497         CtdlFreeMessage(TheMessage);
1498
1499         return(retcode);
1500 }
1501
1502
1503 char *qp_encode_email_addrs(char *source)
1504 {
1505         char user[256], node[256], name[256];
1506         const char headerStr[] = "=?UTF-8?Q?";
1507         char *Encoded;
1508         char *EncodedName;
1509         char *nPtr;
1510         int need_to_encode = 0;
1511         long SourceLen;
1512         long EncodedMaxLen;
1513         long nColons = 0;
1514         long *AddrPtr;
1515         long *AddrUtf8;
1516         long nAddrPtrMax = 50;
1517         long nmax;
1518         int InQuotes = 0;
1519         int i, n;
1520
1521         if (source == NULL) return source;
1522         if (IsEmptyStr(source)) return source;
1523
1524         AddrPtr = malloc (sizeof (long) * nAddrPtrMax);
1525         AddrUtf8 = malloc (sizeof (long) * nAddrPtrMax);
1526         memset(AddrUtf8, 0, sizeof (long) * nAddrPtrMax);
1527         *AddrPtr = 0;
1528         i = 0;
1529         while (!IsEmptyStr (&source[i])) {
1530                 if (nColons >= nAddrPtrMax){
1531                         long *ptr;
1532
1533                         ptr = (long *) malloc(sizeof (long) * nAddrPtrMax * 2);
1534                         memcpy (ptr, AddrPtr, sizeof (long) * nAddrPtrMax);
1535                         free (AddrPtr), AddrPtr = ptr;
1536
1537                         ptr = (long *) malloc(sizeof (long) * nAddrPtrMax * 2);
1538                         memset(&ptr[nAddrPtrMax], 0,
1539                                sizeof (long) * nAddrPtrMax);
1540
1541                         memcpy (ptr, AddrUtf8, sizeof (long) * nAddrPtrMax);
1542                         free (AddrUtf8), AddrUtf8 = ptr;
1543                         nAddrPtrMax *= 2;
1544                 }
1545                 if (((unsigned char) source[i] < 32) ||
1546                     ((unsigned char) source[i] > 126)) {
1547                         need_to_encode = 1;
1548                         AddrUtf8[nColons] = 1;
1549                 }
1550                 if (source[i] == '"')
1551                         InQuotes = !InQuotes;
1552                 if (!InQuotes && source[i] == ',') {
1553                         AddrPtr[nColons] = i;
1554                         nColons++;
1555                 }
1556                 i++;
1557         }
1558         if (need_to_encode == 0) {
1559                 free(AddrPtr);
1560                 free(AddrUtf8);
1561                 return source;
1562         }
1563
1564         SourceLen = i;
1565         EncodedMaxLen = nColons * (sizeof(headerStr) + 3) + SourceLen * 3;
1566         Encoded = (char*) malloc (EncodedMaxLen);
1567
1568         for (i = 0; i < nColons; i++)
1569                 source[AddrPtr[i]++] = '\0';
1570
1571         nPtr = Encoded;
1572         *nPtr = '\0';
1573         for (i = 0; i < nColons && nPtr != NULL; i++) {
1574                 nmax = EncodedMaxLen - (nPtr - Encoded);
1575                 if (AddrUtf8[i]) {
1576                         process_rfc822_addr(&source[AddrPtr[i]],
1577                                             user,
1578                                             node,
1579                                             name);
1580                         /* TODO: libIDN here ! */
1581                         if (IsEmptyStr(name)) {
1582                                 n = snprintf(nPtr, nmax,
1583                                              (i==0)?"%s@%s" : ",%s@%s",
1584                                              user, node);
1585                         }
1586                         else {
1587                                 EncodedName = rfc2047encode(name, strlen(name));
1588                                 n = snprintf(nPtr, nmax,
1589                                              (i==0)?"%s <%s@%s>" : ",%s <%s@%s>",
1590                                              EncodedName, user, node);
1591                                 free(EncodedName);
1592                         }
1593                 }
1594                 else {
1595                         n = snprintf(nPtr, nmax,
1596                                      (i==0)?"%s" : ",%s",
1597                                      &source[AddrPtr[i]]);
1598                 }
1599                 if (n > 0 )
1600                         nPtr += n;
1601                 else {
1602                         char *ptr, *nnPtr;
1603                         ptr = (char*) malloc(EncodedMaxLen * 2);
1604                         memcpy(ptr, Encoded, EncodedMaxLen);
1605                         nnPtr = ptr + (nPtr - Encoded), nPtr = nnPtr;
1606                         free(Encoded), Encoded = ptr;
1607                         EncodedMaxLen *= 2;
1608                         i--; /* do it once more with properly lengthened buffer */
1609                 }
1610         }
1611         for (i = 0; i < nColons; i++)
1612                 source[--AddrPtr[i]] = ',';
1613         free(AddrUtf8);
1614         free(AddrPtr);
1615         return Encoded;
1616 }
1617
1618
1619 /* If the last item in a list of recipients was truncated to a partial address,
1620  * remove it completely in order to avoid choking libSieve
1621  */
1622 void sanitize_truncated_recipient(char *str)
1623 {
1624         if (!str) return;
1625         if (num_tokens(str, ',') < 2) return;
1626
1627         int len = strlen(str);
1628         if (len < 900) return;
1629         if (len > 998) str[998] = 0;
1630
1631         char *cptr = strrchr(str, ',');
1632         if (!cptr) return;
1633
1634         char *lptr = strchr(cptr, '<');
1635         char *rptr = strchr(cptr, '>');
1636
1637         if ( (lptr) && (rptr) && (rptr > lptr) ) return;
1638
1639         *cptr = 0;
1640 }
1641
1642
1643
1644 /*
1645  * Get a message off disk.  (returns om_* values found in msgbase.h)
1646  */
1647 int CtdlOutputPreLoadedMsg(
1648                 struct CtdlMessage *TheMessage,
1649                 int mode,               /* how would you like that message? */
1650                 int headers_only,       /* eschew the message body? */
1651                 int do_proto,           /* do Citadel protocol responses? */
1652                 int crlf,               /* Use CRLF newlines instead of LF? */
1653                 int flags               /* should the bessage be exported clean? */
1654 ) {
1655         int i, j, k;
1656         char buf[SIZ];
1657         cit_uint8_t ch, prev_ch;
1658         char allkeys[30];
1659         char display_name[256];
1660         char *mptr, *mpptr;
1661         char *nl;       /* newline string */
1662         int suppress_f = 0;
1663         int subject_found = 0;
1664         struct ma_info ma;
1665
1666         /* Buffers needed for RFC822 translation.  These are all filled
1667          * using functions that are bounds-checked, and therefore we can
1668          * make them substantially smaller than SIZ.
1669          */
1670         char suser[100];
1671         char luser[100];
1672         char fuser[100];
1673         char snode[100];
1674         char mid[100];
1675         char datestamp[100];
1676
1677         CtdlLogPrintf(CTDL_DEBUG, "CtdlOutputPreLoadedMsg(TheMessage=%s, %d, %d, %d, %d\n",
1678                 ((TheMessage == NULL) ? "NULL" : "not null"),
1679                 mode, headers_only, do_proto, crlf);
1680
1681         strcpy(mid, "unknown");
1682         nl = (crlf ? "\r\n" : "\n");
1683
1684         if (!is_valid_message(TheMessage)) {
1685                 CtdlLogPrintf(CTDL_ERR,
1686                         "ERROR: invalid preloaded message for output\n");
1687                 cit_backtrace ();
1688                 return(om_no_such_msg);
1689         }
1690
1691         /* Are we downloading a MIME component? */
1692         if (mode == MT_DOWNLOAD) {
1693                 if (TheMessage->cm_format_type != FMT_RFC822) {
1694                         if (do_proto)
1695                                 cprintf("%d This is not a MIME message.\n",
1696                                 ERROR + ILLEGAL_VALUE);
1697                 } else if (CC->download_fp != NULL) {
1698                         if (do_proto) cprintf(
1699                                 "%d You already have a download open.\n",
1700                                 ERROR + RESOURCE_BUSY);
1701                 } else {
1702                         /* Parse the message text component */
1703                         mptr = TheMessage->cm_fields['M'];
1704                         mime_parser(mptr, NULL, *mime_download, NULL, NULL, NULL, 0);
1705                         /* If there's no file open by this time, the requested
1706                          * section wasn't found, so print an error
1707                          */
1708                         if (CC->download_fp == NULL) {
1709                                 if (do_proto) cprintf(
1710                                         "%d Section %s not found.\n",
1711                                         ERROR + FILE_NOT_FOUND,
1712                                         CC->download_desired_section);
1713                         }
1714                 }
1715                 return((CC->download_fp != NULL) ? om_ok : om_mime_error);
1716         }
1717
1718         /* MT_SPEW_SECTION is like MT_DOWNLOAD except it outputs the whole MIME part
1719          * in a single server operation instead of opening a download file.
1720          */
1721         if (mode == MT_SPEW_SECTION) {
1722                 if (TheMessage->cm_format_type != FMT_RFC822) {
1723                         if (do_proto)
1724                                 cprintf("%d This is not a MIME message.\n",
1725                                 ERROR + ILLEGAL_VALUE);
1726                 } else {
1727                         /* Parse the message text component */
1728                         int found_it = 0;
1729
1730                         mptr = TheMessage->cm_fields['M'];
1731                         mime_parser(mptr, NULL, *mime_spew_section, NULL, NULL, (void *)&found_it, 0);
1732                         /* If section wasn't found, print an error
1733                          */
1734                         if (!found_it) {
1735                                 if (do_proto) cprintf(
1736                                         "%d Section %s not found.\n",
1737                                         ERROR + FILE_NOT_FOUND,
1738                                         CC->download_desired_section);
1739                         }
1740                 }
1741                 return((CC->download_fp != NULL) ? om_ok : om_mime_error);
1742         }
1743
1744         /* now for the user-mode message reading loops */
1745         if (do_proto) cprintf("%d msg:\n", LISTING_FOLLOWS);
1746
1747         /* Does the caller want to skip the headers? */
1748         if (headers_only == HEADERS_NONE) goto START_TEXT;
1749
1750         /* Tell the client which format type we're using. */
1751         if ( (mode == MT_CITADEL) && (do_proto) ) {
1752                 cprintf("type=%d\n", TheMessage->cm_format_type);
1753         }
1754
1755         /* nhdr=yes means that we're only displaying headers, no body */
1756         if ( (TheMessage->cm_anon_type == MES_ANONONLY)
1757            && ((mode == MT_CITADEL) || (mode == MT_MIME))
1758            && (do_proto)
1759            ) {
1760                 cprintf("nhdr=yes\n");
1761         }
1762
1763         /* begin header processing loop for Citadel message format */
1764
1765         if ((mode == MT_CITADEL) || (mode == MT_MIME)) {
1766
1767                 safestrncpy(display_name, "<unknown>", sizeof display_name);
1768                 if (TheMessage->cm_fields['A']) {
1769                         strcpy(buf, TheMessage->cm_fields['A']);
1770                         if (TheMessage->cm_anon_type == MES_ANONONLY) {
1771                                 safestrncpy(display_name, "****", sizeof display_name);
1772                         }
1773                         else if (TheMessage->cm_anon_type == MES_ANONOPT) {
1774                                 safestrncpy(display_name, "anonymous", sizeof display_name);
1775                         }
1776                         else {
1777                                 safestrncpy(display_name, buf, sizeof display_name);
1778                         }
1779                         if ((is_room_aide())
1780                             && ((TheMessage->cm_anon_type == MES_ANONONLY)
1781                              || (TheMessage->cm_anon_type == MES_ANONOPT))) {
1782                                 size_t tmp = strlen(display_name);
1783                                 snprintf(&display_name[tmp],
1784                                          sizeof display_name - tmp,
1785                                          " [%s]", buf);
1786                         }
1787                 }
1788
1789                 /* Don't show Internet address for users on the
1790                  * local Citadel network.
1791                  */
1792                 suppress_f = 0;
1793                 if (TheMessage->cm_fields['N'] != NULL)
1794                    if (!IsEmptyStr(TheMessage->cm_fields['N']))
1795                       if (haschar(TheMessage->cm_fields['N'], '.') == 0) {
1796                         suppress_f = 1;
1797                 }
1798
1799                 /* Now spew the header fields in the order we like them. */
1800                 safestrncpy(allkeys, FORDER, sizeof allkeys);
1801                 for (i=0; i<strlen(allkeys); ++i) {
1802                         k = (int) allkeys[i];
1803                         if (k != 'M') {
1804                                 if ( (TheMessage->cm_fields[k] != NULL)
1805                                    && (msgkeys[k] != NULL) ) {
1806                                         if ((k == 'V') || (k == 'R') || (k == 'Y')) {
1807                                                 sanitize_truncated_recipient(TheMessage->cm_fields[k]);
1808                                         }
1809                                         if (k == 'A') {
1810                                                 if (do_proto) cprintf("%s=%s\n",
1811                                                         msgkeys[k],
1812                                                         display_name);
1813                                         }
1814                                         else if ((k == 'F') && (suppress_f)) {
1815                                                 /* do nothing */
1816                                         }
1817                                         /* Masquerade display name if needed */
1818                                         else {
1819                                                 if (do_proto) cprintf("%s=%s\n",
1820                                                         msgkeys[k],
1821                                                         TheMessage->cm_fields[k]
1822                                         );
1823                                         }
1824                                 }
1825                         }
1826                 }
1827
1828         }
1829
1830         /* begin header processing loop for RFC822 transfer format */
1831
1832         strcpy(suser, "");
1833         strcpy(luser, "");
1834         strcpy(fuser, "");
1835         strcpy(snode, NODENAME);
1836         if (mode == MT_RFC822) {
1837                 for (i = 0; i < 256; ++i) {
1838                         if (TheMessage->cm_fields[i]) {
1839                                 mptr = mpptr = TheMessage->cm_fields[i];
1840
1841                                 if (i == 'A') {
1842                                         safestrncpy(luser, mptr, sizeof luser);
1843                                         safestrncpy(suser, mptr, sizeof suser);
1844                                 }
1845                                 else if (i == 'Y') {
1846                                         if ((flags & QP_EADDR) != 0) {
1847                                                 mptr = qp_encode_email_addrs(mptr);
1848                                         }
1849                                         sanitize_truncated_recipient(mptr);
1850                                         cprintf("CC: %s%s", mptr, nl);
1851                                 }
1852                                 else if (i == 'P') {
1853                                         cprintf("Return-Path: %s%s", mptr, nl);
1854                                 }
1855                                 else if (i == 'L') {
1856                                         cprintf("List-ID: %s%s", mptr, nl);
1857                                 }
1858                                 else if (i == 'V') {
1859                                         if ((flags & QP_EADDR) != 0)
1860                                                 mptr = qp_encode_email_addrs(mptr);
1861                                         cprintf("Envelope-To: %s%s", mptr, nl);
1862                                 }
1863                                 else if (i == 'U') {
1864                                         cprintf("Subject: %s%s", mptr, nl);
1865                                         subject_found = 1;
1866                                 }
1867                                 else if (i == 'I')
1868                                         safestrncpy(mid, mptr, sizeof mid);
1869                                 else if (i == 'F')
1870                                         safestrncpy(fuser, mptr, sizeof fuser);
1871                                 /* else if (i == 'O')
1872                                         cprintf("X-Citadel-Room: %s%s",
1873                                                 mptr, nl); */
1874                                 else if (i == 'N')
1875                                         safestrncpy(snode, mptr, sizeof snode);
1876                                 else if (i == 'R')
1877                                 {
1878                                         if (haschar(mptr, '@') == 0)
1879                                         {
1880                                                 sanitize_truncated_recipient(mptr);
1881                                                 cprintf("To: %s@%s", mptr, config.c_fqdn);
1882                                                 cprintf("%s", nl);
1883                                         }
1884                                         else
1885                                         {
1886                                                 if ((flags & QP_EADDR) != 0) {
1887                                                         mptr = qp_encode_email_addrs(mptr);
1888                                                 }
1889                                                 sanitize_truncated_recipient(mptr);
1890                                                 cprintf("To: %s", mptr);
1891                                                 cprintf("%s", nl);
1892                                         }
1893                                 }
1894                                 else if (i == 'T') {
1895                                         datestring(datestamp, sizeof datestamp,
1896                                                 atol(mptr), DATESTRING_RFC822);
1897                                         cprintf("Date: %s%s", datestamp, nl);
1898                                 }
1899                                 else if (i == 'W') {
1900                                         cprintf("References: ");
1901                                         k = num_tokens(mptr, '|');
1902                                         for (j=0; j<k; ++j) {
1903                                                 extract_token(buf, mptr, j, '|', sizeof buf);
1904                                                 cprintf("<%s>", buf);
1905                                                 if (j == (k-1)) {
1906                                                         cprintf("%s", nl);
1907                                                 }
1908                                                 else {
1909                                                         cprintf(" ");
1910                                                 }
1911                                         }
1912                                 }
1913                                 if (mptr != mpptr)
1914                                         free (mptr);
1915                         }
1916                 }
1917                 if (subject_found == 0) {
1918                         cprintf("Subject: (no subject)%s", nl);
1919                 }
1920         }
1921
1922         for (i=0; !IsEmptyStr(&suser[i]); ++i) {
1923                 suser[i] = tolower(suser[i]);
1924                 if (!isalnum(suser[i])) suser[i]='_';
1925         }
1926
1927         if (mode == MT_RFC822) {
1928                 if (!strcasecmp(snode, NODENAME)) {
1929                         safestrncpy(snode, FQDN, sizeof snode);
1930                 }
1931
1932                 /* Construct a fun message id */
1933                 cprintf("Message-ID: <%s", mid);/// todo: this possibly breaks threadding mails.
1934                 if (strchr(mid, '@')==NULL) {
1935                         cprintf("@%s", snode);
1936                 }
1937                 cprintf(">%s", nl);
1938
1939                 if (!is_room_aide() && (TheMessage->cm_anon_type == MES_ANONONLY)) {
1940                         cprintf("From: \"----\" <x@x.org>%s", nl);
1941                 }
1942                 else if (!is_room_aide() && (TheMessage->cm_anon_type == MES_ANONOPT)) {
1943                         cprintf("From: \"anonymous\" <x@x.org>%s", nl);
1944                 }
1945                 else if (!IsEmptyStr(fuser)) {
1946                         cprintf("From: \"%s\" <%s>%s", luser, fuser, nl);
1947                 }
1948                 else {
1949                         cprintf("From: \"%s\" <%s@%s>%s", luser, suser, snode, nl);
1950                 }
1951
1952                 /* Blank line signifying RFC822 end-of-headers */
1953                 if (TheMessage->cm_format_type != FMT_RFC822) {
1954                         cprintf("%s", nl);
1955                 }
1956         }
1957
1958         /* end header processing loop ... at this point, we're in the text */
1959 START_TEXT:
1960         if (headers_only == HEADERS_FAST) goto DONE;
1961         mptr = TheMessage->cm_fields['M'];
1962
1963         /* Tell the client about the MIME parts in this message */
1964         if (TheMessage->cm_format_type == FMT_RFC822) {
1965                 if ( (mode == MT_CITADEL) || (mode == MT_MIME) ) {
1966                         memset(&ma, 0, sizeof(struct ma_info));
1967                         mime_parser(mptr, NULL,
1968                                 (do_proto ? *list_this_part : NULL),
1969                                 (do_proto ? *list_this_pref : NULL),
1970                                 (do_proto ? *list_this_suff : NULL),
1971                                 (void *)&ma, 0);
1972                 }
1973                 else if (mode == MT_RFC822) {   /* unparsed RFC822 dump */
1974                         char *start_of_text = NULL;
1975                         start_of_text = strstr(mptr, "\n\r\n");
1976                         if (start_of_text == NULL) start_of_text = strstr(mptr, "\n\n");
1977                         if (start_of_text == NULL) start_of_text = mptr;
1978                         ++start_of_text;
1979                         start_of_text = strstr(start_of_text, "\n");
1980                         ++start_of_text;
1981
1982                         char outbuf[1024];
1983                         int outlen = 0;
1984                         int nllen = strlen(nl);
1985                         prev_ch = 0;
1986                         while (ch=*mptr, ch!=0) {
1987                                 if (ch==13) {
1988                                         /* do nothing */
1989                                 }
1990                                 else {
1991                                         if (
1992                                                 ((headers_only == HEADERS_NONE) && (mptr >= start_of_text))
1993                                            ||   ((headers_only == HEADERS_ONLY) && (mptr < start_of_text))
1994                                            ||   ((headers_only != HEADERS_NONE) && (headers_only != HEADERS_ONLY))
1995                                         ) {
1996                                                 if (ch == 10) {
1997                                                         sprintf(&outbuf[outlen], "%s", nl);
1998                                                         outlen += nllen;
1999                                                 }
2000                                                 else {
2001                                                         outbuf[outlen++] = ch;
2002                                                 }
2003                                         }
2004                                 }
2005                                 if (flags & ESC_DOT)
2006                                 {
2007                                         if ((prev_ch == 10) && (ch == '.') && ((*(mptr+1) == 13) || (*(mptr+1) == 10)))
2008                                         {
2009                                                 outbuf[outlen++] = '.';
2010                                         }
2011                                 }
2012                                 prev_ch = ch;
2013                                 ++mptr;
2014                                 if (outlen > 1000) {
2015                                         client_write(outbuf, outlen);
2016                                         outlen = 0;
2017                                 }
2018                         }
2019                         if (outlen > 0) {
2020                                 client_write(outbuf, outlen);
2021                                 outlen = 0;
2022                         }
2023
2024                         goto DONE;
2025                 }
2026         }
2027
2028         if (headers_only == HEADERS_ONLY) {
2029                 goto DONE;
2030         }
2031
2032         /* signify start of msg text */
2033         if ( (mode == MT_CITADEL) || (mode == MT_MIME) ) {
2034                 if (do_proto) cprintf("text\n");
2035         }
2036
2037         /* If the format type on disk is 1 (fixed-format), then we want
2038          * everything to be output completely literally ... regardless of
2039          * what message transfer format is in use.
2040          */
2041         if (TheMessage->cm_format_type == FMT_FIXED) {
2042                 int buflen;
2043                 if (mode == MT_MIME) {
2044                         cprintf("Content-type: text/plain\n\n");
2045                 }
2046                 *buf = '\0';
2047                 buflen = 0;
2048                 while (ch = *mptr++, ch > 0) {
2049                         if (ch == 13)
2050                                 ch = 10;
2051                         if ((ch == 10) || (buflen > 250)) {
2052                                 buf[buflen] = '\0';
2053                                 cprintf("%s%s", buf, nl);
2054                                 *buf = '\0';
2055                                 buflen = 0;
2056                         } else {
2057                                 buf[buflen] = ch;
2058                                 buflen++;
2059                         }
2060                 }
2061                 buf[buflen] = '\0';
2062                 if (!IsEmptyStr(buf))
2063                         cprintf("%s%s", buf, nl);
2064         }
2065
2066         /* If the message on disk is format 0 (Citadel vari-format), we
2067          * output using the formatter at 80 columns.  This is the final output
2068          * form if the transfer format is RFC822, but if the transfer format
2069          * is Citadel proprietary, it'll still work, because the indentation
2070          * for new paragraphs is correct and the client will reformat the
2071          * message to the reader's screen width.
2072          */
2073         if (TheMessage->cm_format_type == FMT_CITADEL) {
2074                 if (mode == MT_MIME) {
2075                         cprintf("Content-type: text/x-citadel-variformat\n\n");
2076                 }
2077                 memfmout(mptr, 0, nl);
2078         }
2079
2080         /* If the message on disk is format 4 (MIME), we've gotta hand it
2081          * off to the MIME parser.  The client has already been told that
2082          * this message is format 1 (fixed format), so the callback function
2083          * we use will display those parts as-is.
2084          */
2085         if (TheMessage->cm_format_type == FMT_RFC822) {
2086                 memset(&ma, 0, sizeof(struct ma_info));
2087
2088                 if (mode == MT_MIME) {
2089                         ma.use_fo_hooks = 0;
2090                         strcpy(ma.chosen_part, "1");
2091                         ma.chosen_pref = 9999;
2092                         mime_parser(mptr, NULL,
2093                                 *choose_preferred, *fixed_output_pre,
2094                                 *fixed_output_post, (void *)&ma, 0);
2095                         mime_parser(mptr, NULL,
2096                                 *output_preferred, NULL, NULL, (void *)&ma, CC->msg4_dont_decode);
2097                 }
2098                 else {
2099                         ma.use_fo_hooks = 1;
2100                         mime_parser(mptr, NULL,
2101                                 *fixed_output, *fixed_output_pre,
2102                                 *fixed_output_post, (void *)&ma, 0);
2103                 }
2104
2105         }
2106
2107 DONE:   /* now we're done */
2108         if (do_proto) cprintf("000\n");
2109         return(om_ok);
2110 }
2111
2112
2113
2114 /*
2115  * display a message (mode 0 - Citadel proprietary)
2116  */
2117 void cmd_msg0(char *cmdbuf)
2118 {
2119         long msgid;
2120         int headers_only = HEADERS_ALL;
2121
2122         msgid = extract_long(cmdbuf, 0);
2123         headers_only = extract_int(cmdbuf, 1);
2124
2125         CtdlOutputMsg(msgid, MT_CITADEL, headers_only, 1, 0, NULL, 0);
2126         return;
2127 }
2128
2129
2130 /*
2131  * display a message (mode 2 - RFC822)
2132  */
2133 void cmd_msg2(char *cmdbuf)
2134 {
2135         long msgid;
2136         int headers_only = HEADERS_ALL;
2137
2138         msgid = extract_long(cmdbuf, 0);
2139         headers_only = extract_int(cmdbuf, 1);
2140
2141         CtdlOutputMsg(msgid, MT_RFC822, headers_only, 1, 1, NULL, 0);
2142 }
2143
2144
2145
2146 /*
2147  * display a message (mode 3 - IGnet raw format - internal programs only)
2148  */
2149 void cmd_msg3(char *cmdbuf)
2150 {
2151         long msgnum;
2152         struct CtdlMessage *msg = NULL;
2153         struct ser_ret smr;
2154
2155         if (CC->internal_pgm == 0) {
2156                 cprintf("%d This command is for internal programs only.\n",
2157                         ERROR + HIGHER_ACCESS_REQUIRED);
2158                 return;
2159         }
2160
2161         msgnum = extract_long(cmdbuf, 0);
2162         msg = CtdlFetchMessage(msgnum, 1);
2163         if (msg == NULL) {
2164                 cprintf("%d Message %ld not found.\n",
2165                         ERROR + MESSAGE_NOT_FOUND, msgnum);
2166                 return;
2167         }
2168
2169         serialize_message(&smr, msg);
2170         CtdlFreeMessage(msg);
2171
2172         if (smr.len == 0) {
2173                 cprintf("%d Unable to serialize message\n",
2174                         ERROR + INTERNAL_ERROR);
2175                 return;
2176         }
2177
2178         cprintf("%d %ld\n", BINARY_FOLLOWS, (long)smr.len);
2179         client_write((char *)smr.ser, (int)smr.len);
2180         free(smr.ser);
2181 }
2182
2183
2184
2185 /*
2186  * Display a message using MIME content types
2187  */
2188 void cmd_msg4(char *cmdbuf)
2189 {
2190         long msgid;
2191         char section[64];
2192
2193         msgid = extract_long(cmdbuf, 0);
2194         extract_token(section, cmdbuf, 1, '|', sizeof section);
2195         CtdlOutputMsg(msgid, MT_MIME, 0, 1, 0, (section[0] ? section : NULL) , 0);
2196 }
2197
2198
2199
2200 /*
2201  * Client tells us its preferred message format(s)
2202  */
2203 void cmd_msgp(char *cmdbuf)
2204 {
2205         if (!strcasecmp(cmdbuf, "dont_decode")) {
2206                 CC->msg4_dont_decode = 1;
2207                 cprintf("%d MSG4 will not pre-decode messages.\n", CIT_OK);
2208         }
2209         else {
2210                 safestrncpy(CC->preferred_formats, cmdbuf, sizeof(CC->preferred_formats));
2211                 cprintf("%d Preferred MIME formats have been set.\n", CIT_OK);
2212         }
2213 }
2214
2215
2216 /*
2217  * Open a component of a MIME message as a download file
2218  */
2219 void cmd_opna(char *cmdbuf)
2220 {
2221         long msgid;
2222         char desired_section[128];
2223
2224         msgid = extract_long(cmdbuf, 0);
2225         extract_token(desired_section, cmdbuf, 1, '|', sizeof desired_section);
2226         safestrncpy(CC->download_desired_section, desired_section,
2227                 sizeof CC->download_desired_section);
2228         CtdlOutputMsg(msgid, MT_DOWNLOAD, 0, 1, 1, NULL, 0);
2229 }
2230
2231
2232 /*
2233  * Open a component of a MIME message and transmit it all at once
2234  */
2235 void cmd_dlat(char *cmdbuf)
2236 {
2237         long msgid;
2238         char desired_section[128];
2239
2240         msgid = extract_long(cmdbuf, 0);
2241         extract_token(desired_section, cmdbuf, 1, '|', sizeof desired_section);
2242         safestrncpy(CC->download_desired_section, desired_section,
2243                 sizeof CC->download_desired_section);
2244         CtdlOutputMsg(msgid, MT_SPEW_SECTION, 0, 1, 1, NULL, 0);
2245 }
2246
2247
2248 /*
2249  * Save one or more message pointers into a specified room
2250  * (Returns 0 for success, nonzero for failure)
2251  * roomname may be NULL to use the current room
2252  *
2253  * Note that the 'supplied_msg' field may be set to NULL, in which case
2254  * the message will be fetched from disk, by number, if we need to perform
2255  * replication checks.  This adds an additional database read, so if the
2256  * caller already has the message in memory then it should be supplied.  (Obviously
2257  * this mode of operation only works if we're saving a single message.)
2258  */
2259 int CtdlSaveMsgPointersInRoom(char *roomname, long newmsgidlist[], int num_newmsgs,
2260                                 int do_repl_check, struct CtdlMessage *supplied_msg)
2261 {
2262         int i, j, unique;
2263         char hold_rm[ROOMNAMELEN];
2264         struct cdbdata *cdbfr;
2265         int num_msgs;
2266         long *msglist;
2267         long highest_msg = 0L;
2268
2269         long msgid = 0;
2270         struct CtdlMessage *msg = NULL;
2271
2272         long *msgs_to_be_merged = NULL;
2273         int num_msgs_to_be_merged = 0;
2274
2275         CtdlLogPrintf(CTDL_DEBUG,
2276                 "CtdlSaveMsgPointersInRoom(room=%s, num_msgs=%d, repl=%d)\n",
2277                 roomname, num_newmsgs, do_repl_check);
2278
2279         strcpy(hold_rm, CC->room.QRname);
2280
2281         /* Sanity checks */
2282         if (newmsgidlist == NULL) return(ERROR + INTERNAL_ERROR);
2283         if (num_newmsgs < 1) return(ERROR + INTERNAL_ERROR);
2284         if (num_newmsgs > 1) supplied_msg = NULL;
2285
2286         /* Now the regular stuff */
2287         if (lgetroom(&CC->room,
2288            ((roomname != NULL) ? roomname : CC->room.QRname) )
2289            != 0) {
2290                 CtdlLogPrintf(CTDL_ERR, "No such room <%s>\n", roomname);
2291                 return(ERROR + ROOM_NOT_FOUND);
2292         }
2293
2294
2295         msgs_to_be_merged = malloc(sizeof(long) * num_newmsgs);
2296         num_msgs_to_be_merged = 0;
2297
2298
2299         cdbfr = cdb_fetch(CDB_MSGLISTS, &CC->room.QRnumber, sizeof(long));
2300         if (cdbfr == NULL) {
2301                 msglist = NULL;
2302                 num_msgs = 0;
2303         } else {
2304                 msglist = (long *) cdbfr->ptr;
2305                 cdbfr->ptr = NULL;      /* CtdlSaveMsgPointerInRoom() now owns this memory */
2306                 num_msgs = cdbfr->len / sizeof(long);
2307                 cdb_free(cdbfr);
2308         }
2309
2310
2311         /* Create a list of msgid's which were supplied by the caller, but do
2312          * not already exist in the target room.  It is absolutely taboo to
2313          * have more than one reference to the same message in a room.
2314          */
2315         for (i=0; i<num_newmsgs; ++i) {
2316                 unique = 1;
2317                 if (num_msgs > 0) for (j=0; j<num_msgs; ++j) {
2318                         if (msglist[j] == newmsgidlist[i]) {
2319                                 unique = 0;
2320                         }
2321                 }
2322                 if (unique) {
2323                         msgs_to_be_merged[num_msgs_to_be_merged++] = newmsgidlist[i];
2324                 }
2325         }
2326
2327         CtdlLogPrintf(9, "%d unique messages to be merged\n", num_msgs_to_be_merged);
2328
2329         /*
2330          * Now merge the new messages
2331          */
2332         msglist = realloc(msglist, (sizeof(long) * (num_msgs + num_msgs_to_be_merged)) );
2333         if (msglist == NULL) {
2334                 CtdlLogPrintf(CTDL_ALERT, "ERROR: can't realloc message list!\n");
2335         }
2336         memcpy(&msglist[num_msgs], msgs_to_be_merged, (sizeof(long) * num_msgs_to_be_merged) );
2337         num_msgs += num_msgs_to_be_merged;
2338
2339         /* Sort the message list, so all the msgid's are in order */
2340         num_msgs = sort_msglist(msglist, num_msgs);
2341
2342         /* Determine the highest message number */
2343         highest_msg = msglist[num_msgs - 1];
2344
2345         /* Write it back to disk. */
2346         cdb_store(CDB_MSGLISTS, &CC->room.QRnumber, (int)sizeof(long),
2347                   msglist, (int)(num_msgs * sizeof(long)));
2348
2349         /* Free up the memory we used. */
2350         free(msglist);
2351
2352         /* Update the highest-message pointer and unlock the room. */
2353         CC->room.QRhighest = highest_msg;
2354         lputroom(&CC->room);
2355
2356         /* Perform replication checks if necessary */
2357         if ( (DoesThisRoomNeedEuidIndexing(&CC->room)) && (do_repl_check) ) {
2358                 CtdlLogPrintf(CTDL_DEBUG, "CtdlSaveMsgPointerInRoom() doing repl checks\n");
2359
2360                 for (i=0; i<num_msgs_to_be_merged; ++i) {
2361                         msgid = msgs_to_be_merged[i];
2362
2363                         if (supplied_msg != NULL) {
2364                                 msg = supplied_msg;
2365                         }
2366                         else {
2367                                 msg = CtdlFetchMessage(msgid, 0);
2368                         }
2369
2370                         if (msg != NULL) {
2371                                 ReplicationChecks(msg);
2372
2373                                 /* If the message has an Exclusive ID, index that... */
2374                                 if (msg->cm_fields['E'] != NULL) {
2375                                         index_message_by_euid(msg->cm_fields['E'], &CC->room, msgid);
2376                                 }
2377
2378                                 /* Free up the memory we may have allocated */
2379                                 if (msg != supplied_msg) {
2380                                         CtdlFreeMessage(msg);
2381                                 }
2382                         }
2383
2384                 }
2385         }
2386
2387         else {
2388                 CtdlLogPrintf(CTDL_DEBUG, "CtdlSaveMsgPointerInRoom() skips repl checks\n");
2389         }
2390
2391         /* Submit this room for processing by hooks */
2392         PerformRoomHooks(&CC->room);
2393
2394         /* Go back to the room we were in before we wandered here... */
2395         getroom(&CC->room, hold_rm);
2396
2397         /* Bump the reference count for all messages which were merged */
2398         for (i=0; i<num_msgs_to_be_merged; ++i) {
2399                 AdjRefCount(msgs_to_be_merged[i], +1);
2400         }
2401
2402         /* Free up memory... */
2403         if (msgs_to_be_merged != NULL) {
2404                 free(msgs_to_be_merged);
2405         }
2406
2407         /* Return success. */
2408         return (0);
2409 }
2410
2411
2412 /*
2413  * This is the same as CtdlSaveMsgPointersInRoom() but it only accepts
2414  * a single message.
2415  */
2416 int CtdlSaveMsgPointerInRoom(char *roomname, long msgid,
2417                         int do_repl_check, struct CtdlMessage *supplied_msg)
2418 {
2419         return CtdlSaveMsgPointersInRoom(roomname, &msgid, 1, do_repl_check, supplied_msg);
2420 }
2421
2422
2423
2424
2425 /*
2426  * Message base operation to save a new message to the message store
2427  * (returns new message number)
2428  *
2429  * This is the back end for CtdlSubmitMsg() and should not be directly
2430  * called by server-side modules.
2431  *
2432  */
2433 long send_message(struct CtdlMessage *msg) {
2434         long newmsgid;
2435         long retval;
2436         char msgidbuf[256];
2437         struct ser_ret smr;
2438         int is_bigmsg = 0;
2439         char *holdM = NULL;
2440
2441         /* Get a new message number */
2442         newmsgid = get_new_message_number();
2443         snprintf(msgidbuf, sizeof msgidbuf, "%010ld@%s", newmsgid, config.c_fqdn);
2444
2445         /* Generate an ID if we don't have one already */
2446         if (msg->cm_fields['I']==NULL) {
2447                 msg->cm_fields['I'] = strdup(msgidbuf);
2448         }
2449
2450         /* If the message is big, set its body aside for storage elsewhere */
2451         if (msg->cm_fields['M'] != NULL) {
2452                 if (strlen(msg->cm_fields['M']) > BIGMSG) {
2453                         is_bigmsg = 1;
2454                         holdM = msg->cm_fields['M'];
2455                         msg->cm_fields['M'] = NULL;
2456                 }
2457         }
2458
2459         /* Serialize our data structure for storage in the database */
2460         serialize_message(&smr, msg);
2461
2462         if (is_bigmsg) {
2463                 msg->cm_fields['M'] = holdM;
2464         }
2465
2466         if (smr.len == 0) {
2467                 cprintf("%d Unable to serialize message\n",
2468                         ERROR + INTERNAL_ERROR);
2469                 return (-1L);
2470         }
2471
2472         /* Write our little bundle of joy into the message base */
2473         if (cdb_store(CDB_MSGMAIN, &newmsgid, (int)sizeof(long),
2474                       smr.ser, smr.len) < 0) {
2475                 CtdlLogPrintf(CTDL_ERR, "Can't store message\n");
2476                 retval = 0L;
2477         } else {
2478                 if (is_bigmsg) {
2479                         cdb_store(CDB_BIGMSGS,
2480                                 &newmsgid,
2481                                 (int)sizeof(long),
2482                                 holdM,
2483                                 (strlen(holdM) + 1)
2484                         );
2485                 }
2486                 retval = newmsgid;
2487         }
2488
2489         /* Free the memory we used for the serialized message */
2490         free(smr.ser);
2491
2492         /* Return the *local* message ID to the caller
2493          * (even if we're storing an incoming network message)
2494          */
2495         return(retval);
2496 }
2497
2498
2499
2500 /*
2501  * Serialize a struct CtdlMessage into the format used on disk and network.
2502  *
2503  * This function loads up a "struct ser_ret" (defined in server.h) which
2504  * contains the length of the serialized message and a pointer to the
2505  * serialized message in memory.  THE LATTER MUST BE FREED BY THE CALLER.
2506  */
2507 void serialize_message(struct ser_ret *ret,             /* return values */
2508                         struct CtdlMessage *msg)        /* unserialized msg */
2509 {
2510         size_t wlen, fieldlen;
2511         int i;
2512         static char *forder = FORDER;
2513
2514         /*
2515          * Check for valid message format
2516          */
2517         if (is_valid_message(msg) == 0) {
2518                 CtdlLogPrintf(CTDL_ERR, "serialize_message() aborting due to invalid message\n");
2519                 ret->len = 0;
2520                 ret->ser = NULL;
2521                 return;
2522         }
2523
2524         ret->len = 3;
2525         for (i=0; i<26; ++i) if (msg->cm_fields[(int)forder[i]] != NULL)
2526                 ret->len = ret->len +
2527                         strlen(msg->cm_fields[(int)forder[i]]) + 2;
2528
2529         ret->ser = malloc(ret->len);
2530         if (ret->ser == NULL) {
2531                 CtdlLogPrintf(CTDL_ERR, "serialize_message() malloc(%ld) failed: %s\n",
2532                         (long)ret->len, strerror(errno));
2533                 ret->len = 0;
2534                 ret->ser = NULL;
2535                 return;
2536         }
2537
2538         ret->ser[0] = 0xFF;
2539         ret->ser[1] = msg->cm_anon_type;
2540         ret->ser[2] = msg->cm_format_type;
2541         wlen = 3;
2542
2543         for (i=0; i<26; ++i) if (msg->cm_fields[(int)forder[i]] != NULL) {
2544                 fieldlen = strlen(msg->cm_fields[(int)forder[i]]);
2545                 ret->ser[wlen++] = (char)forder[i];
2546                 safestrncpy((char *)&ret->ser[wlen], msg->cm_fields[(int)forder[i]], fieldlen+1);
2547                 wlen = wlen + fieldlen + 1;
2548         }
2549         if (ret->len != wlen) CtdlLogPrintf(CTDL_ERR, "ERROR: len=%ld wlen=%ld\n",
2550                 (long)ret->len, (long)wlen);
2551
2552         return;
2553 }
2554
2555
2556 /*
2557  * Serialize a struct CtdlMessage into the format used on disk and network.
2558  *
2559  * This function loads up a "struct ser_ret" (defined in server.h) which
2560  * contains the length of the serialized message and a pointer to the
2561  * serialized message in memory.  THE LATTER MUST BE FREED BY THE CALLER.
2562  */
2563 void dump_message(struct CtdlMessage *msg,      /* unserialized msg */
2564                   long Siz)                     /* how many chars ? */
2565 {
2566         size_t wlen;
2567         int i;
2568         static char *forder = FORDER;
2569         char *buf;
2570
2571         /*
2572          * Check for valid message format
2573          */
2574         if (is_valid_message(msg) == 0) {
2575                 CtdlLogPrintf(CTDL_ERR, "dump_message() aborting due to invalid message\n");
2576                 return;
2577         }
2578
2579         buf = (char*) malloc (Siz + 1);
2580
2581         wlen = 3;
2582
2583         for (i=0; i<26; ++i) if (msg->cm_fields[(int)forder[i]] != NULL) {
2584                         snprintf (buf, Siz, " msg[%c] = %s ...\n", (char) forder[i],
2585                                    msg->cm_fields[(int)forder[i]]);
2586                         client_write (buf, strlen(buf));
2587                 }
2588
2589         return;
2590 }
2591
2592
2593
2594 /*
2595  * Check to see if any messages already exist in the current room which
2596  * carry the same Exclusive ID as this one.  If any are found, delete them.
2597  */
2598 void ReplicationChecks(struct CtdlMessage *msg) {
2599         long old_msgnum = (-1L);
2600
2601         if (DoesThisRoomNeedEuidIndexing(&CC->room) == 0) return;
2602
2603         CtdlLogPrintf(CTDL_DEBUG, "Performing replication checks in <%s>\n",
2604                 CC->room.QRname);
2605
2606         /* No exclusive id?  Don't do anything. */
2607         if (msg == NULL) return;
2608         if (msg->cm_fields['E'] == NULL) return;
2609         if (IsEmptyStr(msg->cm_fields['E'])) return;
2610         /*CtdlLogPrintf(CTDL_DEBUG, "Exclusive ID: <%s> for room <%s>\n",
2611                 msg->cm_fields['E'], CC->room.QRname);*/
2612
2613         old_msgnum = locate_message_by_euid(msg->cm_fields['E'], &CC->room);
2614         if (old_msgnum > 0L) {
2615                 CtdlLogPrintf(CTDL_DEBUG, "ReplicationChecks() replacing message %ld\n", old_msgnum);
2616                 CtdlDeleteMessages(CC->room.QRname, &old_msgnum, 1, "");
2617         }
2618 }
2619
2620
2621
2622 /*
2623  * Save a message to disk and submit it into the delivery system.
2624  */
2625 long CtdlSubmitMsg(struct CtdlMessage *msg,     /* message to save */
2626                    struct recptypes *recps,     /* recipients (if mail) */
2627                    char *force,                 /* force a particular room? */
2628                    int flags                    /* should the bessage be exported clean? */
2629 ) {
2630         char submit_filename[128];
2631         char generated_timestamp[32];
2632         char hold_rm[ROOMNAMELEN];
2633         char actual_rm[ROOMNAMELEN];
2634         char force_room[ROOMNAMELEN];
2635         char content_type[SIZ];                 /* We have to learn this */
2636         char recipient[SIZ];
2637         long newmsgid;
2638         char *mptr = NULL;
2639         struct ctdluser userbuf;
2640         int a, i;
2641         struct MetaData smi;
2642         FILE *network_fp = NULL;
2643         static int seqnum = 1;
2644         struct CtdlMessage *imsg = NULL;
2645         char *instr = NULL;
2646         size_t instr_alloc = 0;
2647         struct ser_ret smr;
2648         char *hold_R, *hold_D;
2649         char *collected_addresses = NULL;
2650         struct addresses_to_be_filed *aptr = NULL;
2651         char *saved_rfc822_version = NULL;
2652         int qualified_for_journaling = 0;
2653         struct CitContext *CCC = CC;            /* CachedCitContext - performance boost */
2654         char bounce_to[1024] = "";
2655         size_t tmp = 0;
2656
2657         CtdlLogPrintf(CTDL_DEBUG, "CtdlSubmitMsg() called\n");
2658         if (is_valid_message(msg) == 0) return(-1);     /* self check */
2659
2660         /* If this message has no timestamp, we take the liberty of
2661          * giving it one, right now.
2662          */
2663         if (msg->cm_fields['T'] == NULL) {
2664                 snprintf(generated_timestamp, sizeof generated_timestamp, "%ld", (long)time(NULL));
2665                 msg->cm_fields['T'] = strdup(generated_timestamp);
2666         }
2667
2668         /* If this message has no path, we generate one.
2669          */
2670         if (msg->cm_fields['P'] == NULL) {
2671                 if (msg->cm_fields['A'] != NULL) {
2672                         msg->cm_fields['P'] = strdup(msg->cm_fields['A']);
2673                         for (a=0; !IsEmptyStr(&msg->cm_fields['P'][a]); ++a) {
2674                                 if (isspace(msg->cm_fields['P'][a])) {
2675                                         msg->cm_fields['P'][a] = ' ';
2676                                 }
2677                         }
2678                 }
2679                 else {
2680                         msg->cm_fields['P'] = strdup("unknown");
2681                 }
2682         }
2683
2684         if (force == NULL) {
2685                 strcpy(force_room, "");
2686         }
2687         else {
2688                 strcpy(force_room, force);
2689         }
2690
2691         /* Learn about what's inside, because it's what's inside that counts */
2692         if (msg->cm_fields['M'] == NULL) {
2693                 CtdlLogPrintf(CTDL_ERR, "ERROR: attempt to save message with NULL body\n");
2694                 return(-2);
2695         }
2696
2697         switch (msg->cm_format_type) {
2698         case 0:
2699                 strcpy(content_type, "text/x-citadel-variformat");
2700                 break;
2701         case 1:
2702                 strcpy(content_type, "text/plain");
2703                 break;
2704         case 4:
2705                 strcpy(content_type, "text/plain");
2706                 mptr = bmstrcasestr(msg->cm_fields['M'], "Content-type:");
2707                 if (mptr != NULL) {
2708                         char *aptr;
2709                         safestrncpy(content_type, &mptr[13], sizeof content_type);
2710                         striplt(content_type);
2711                         aptr = content_type;
2712                         while (!IsEmptyStr(aptr)) {
2713                                 if ((*aptr == ';')
2714                                     || (*aptr == ' ')
2715                                     || (*aptr == 13)
2716                                     || (*aptr == 10)) {
2717                                         *aptr = 0;
2718                                 }
2719                                 else aptr++;
2720                         }
2721                 }
2722         }
2723
2724         /* Goto the correct room */
2725         CtdlLogPrintf(CTDL_DEBUG, "Selected room %s\n", (recps) ? CCC->room.QRname : SENTITEMS);
2726         strcpy(hold_rm, CCC->room.QRname);
2727         strcpy(actual_rm, CCC->room.QRname);
2728         if (recps != NULL) {
2729                 strcpy(actual_rm, SENTITEMS);
2730         }
2731
2732         /* If the user is a twit, move to the twit room for posting */
2733         if (TWITDETECT) {
2734                 if (CCC->user.axlevel == 2) {
2735                         strcpy(hold_rm, actual_rm);
2736                         strcpy(actual_rm, config.c_twitroom);
2737                         CtdlLogPrintf(CTDL_DEBUG, "Diverting to twit room\n");
2738                 }
2739         }
2740
2741         /* ...or if this message is destined for Aide> then go there. */
2742         if (!IsEmptyStr(force_room)) {
2743                 strcpy(actual_rm, force_room);
2744         }
2745
2746         CtdlLogPrintf(CTDL_DEBUG, "Final selection: %s\n", actual_rm);
2747         if (strcasecmp(actual_rm, CCC->room.QRname)) {
2748                 /* getroom(&CCC->room, actual_rm); */
2749                 usergoto(actual_rm, 0, 1, NULL, NULL);
2750         }
2751
2752         /*
2753          * If this message has no O (room) field, generate one.
2754          */
2755         if (msg->cm_fields['O'] == NULL) {
2756                 msg->cm_fields['O'] = strdup(CCC->room.QRname);
2757         }
2758
2759         /* Perform "before save" hooks (aborting if any return nonzero) */
2760         CtdlLogPrintf(CTDL_DEBUG, "Performing before-save hooks\n");
2761         if (PerformMessageHooks(msg, EVT_BEFORESAVE) > 0) return(-3);
2762
2763         /*
2764          * If this message has an Exclusive ID, and the room is replication
2765          * checking enabled, then do replication checks.
2766          */
2767         if (DoesThisRoomNeedEuidIndexing(&CCC->room)) {
2768                 ReplicationChecks(msg);
2769         }
2770
2771         /* Save it to disk */
2772         CtdlLogPrintf(CTDL_DEBUG, "Saving to disk\n");
2773         newmsgid = send_message(msg);
2774         if (newmsgid <= 0L) return(-5);
2775
2776         /* Write a supplemental message info record.  This doesn't have to
2777          * be a critical section because nobody else knows about this message
2778          * yet.
2779          */
2780         CtdlLogPrintf(CTDL_DEBUG, "Creating MetaData record\n");
2781         memset(&smi, 0, sizeof(struct MetaData));
2782         smi.meta_msgnum = newmsgid;
2783         smi.meta_refcount = 0;
2784         safestrncpy(smi.meta_content_type, content_type,
2785                         sizeof smi.meta_content_type);
2786
2787         /*
2788          * Measure how big this message will be when rendered as RFC822.
2789          * We do this for two reasons:
2790          * 1. We need the RFC822 length for the new metadata record, so the
2791          *    POP and IMAP services don't have to calculate message lengths
2792          *    while the user is waiting (multiplied by potentially hundreds
2793          *    or thousands of messages).
2794          * 2. If journaling is enabled, we will need an RFC822 version of the
2795          *    message to attach to the journalized copy.
2796          */
2797         if (CCC->redirect_buffer != NULL) {
2798                 CtdlLogPrintf(CTDL_ALERT, "CCC->redirect_buffer is not NULL during message submission!\n");
2799                 abort();
2800         }
2801         CCC->redirect_buffer = malloc(SIZ);
2802         CCC->redirect_len = 0;
2803         CCC->redirect_alloc = SIZ;
2804         CtdlOutputPreLoadedMsg(msg, MT_RFC822, HEADERS_ALL, 0, 1, QP_EADDR);
2805         smi.meta_rfc822_length = CCC->redirect_len;
2806         saved_rfc822_version = CCC->redirect_buffer;
2807         CCC->redirect_buffer = NULL;
2808         CCC->redirect_len = 0;
2809         CCC->redirect_alloc = 0;
2810
2811         PutMetaData(&smi);
2812
2813         /* Now figure out where to store the pointers */
2814         CtdlLogPrintf(CTDL_DEBUG, "Storing pointers\n");
2815
2816         /* If this is being done by the networker delivering a private
2817          * message, we want to BYPASS saving the sender's copy (because there
2818          * is no local sender; it would otherwise go to the Trashcan).
2819          */
2820         if ((!CCC->internal_pgm) || (recps == NULL)) {
2821                 if (CtdlSaveMsgPointerInRoom(actual_rm, newmsgid, 1, msg) != 0) {
2822                         CtdlLogPrintf(CTDL_ERR, "ERROR saving message pointer!\n");
2823                         CtdlSaveMsgPointerInRoom(config.c_aideroom, newmsgid, 0, msg);
2824                 }
2825         }
2826
2827         /* For internet mail, drop a copy in the outbound queue room */
2828         if ((recps != NULL) && (recps->num_internet > 0)) {
2829                 CtdlSaveMsgPointerInRoom(SMTP_SPOOLOUT_ROOM, newmsgid, 0, msg);
2830         }
2831
2832         /* If other rooms are specified, drop them there too. */
2833         if ((recps != NULL) && (recps->num_room > 0))
2834           for (i=0; i<num_tokens(recps->recp_room, '|'); ++i) {
2835                 extract_token(recipient, recps->recp_room, i,
2836                                         '|', sizeof recipient);
2837                 CtdlLogPrintf(CTDL_DEBUG, "Delivering to room <%s>\n", recipient);
2838                 CtdlSaveMsgPointerInRoom(recipient, newmsgid, 0, msg);
2839         }
2840
2841         /* Bump this user's messages posted counter. */
2842         CtdlLogPrintf(CTDL_DEBUG, "Updating user\n");
2843         lgetuser(&CCC->user, CCC->curr_user);
2844         CCC->user.posted = CCC->user.posted + 1;
2845         lputuser(&CCC->user);
2846
2847         /* Decide where bounces need to be delivered */
2848         if ((recps != NULL) && (recps->bounce_to != NULL)) {
2849                 safestrncpy(bounce_to, recps->bounce_to, sizeof bounce_to);
2850         }
2851         else if (CCC->logged_in) {
2852                 snprintf(bounce_to, sizeof bounce_to, "%s@%s", CCC->user.fullname, config.c_nodename);
2853         }
2854         else {
2855                 snprintf(bounce_to, sizeof bounce_to, "%s@%s", msg->cm_fields['A'], msg->cm_fields['N']);
2856         }
2857
2858         /* If this is private, local mail, make a copy in the
2859          * recipient's mailbox and bump the reference count.
2860          */
2861         if ((recps != NULL) && (recps->num_local > 0))
2862           for (i=0; i<num_tokens(recps->recp_local, '|'); ++i) {
2863                 extract_token(recipient, recps->recp_local, i,
2864                                         '|', sizeof recipient);
2865                 CtdlLogPrintf(CTDL_DEBUG, "Delivering private local mail to <%s>\n",
2866                         recipient);
2867                 if (getuser(&userbuf, recipient) == 0) {
2868                         // Add a flag so the Funambol module knows its mail
2869                         msg->cm_fields['W'] = strdup(recipient);
2870                         MailboxName(actual_rm, sizeof actual_rm, &userbuf, MAILROOM);
2871                         CtdlSaveMsgPointerInRoom(actual_rm, newmsgid, 0, msg);
2872                         BumpNewMailCounter(userbuf.usernum);
2873                         if (!IsEmptyStr(config.c_funambol_host) || !IsEmptyStr(config.c_pager_program)) {
2874                         /* Generate a instruction message for the Funambol notification
2875                          * server, in the same style as the SMTP queue
2876                          */
2877                            instr_alloc = 1024;
2878                            instr = malloc(instr_alloc);
2879                            snprintf(instr, instr_alloc,
2880                         "Content-type: %s\n\nmsgid|%ld\nsubmitted|%ld\n"
2881                         "bounceto|%s\n",
2882                         SPOOLMIME, newmsgid, (long)time(NULL),
2883                         bounce_to
2884                         );
2885
2886                            imsg = malloc(sizeof(struct CtdlMessage));
2887                            memset(imsg, 0, sizeof(struct CtdlMessage));
2888                            imsg->cm_magic = CTDLMESSAGE_MAGIC;
2889                            imsg->cm_anon_type = MES_NORMAL;
2890                            imsg->cm_format_type = FMT_RFC822;
2891                            imsg->cm_fields['A'] = strdup("Citadel");
2892                            imsg->cm_fields['J'] = strdup("do not journal");
2893                            imsg->cm_fields['M'] = instr;        /* imsg owns this memory now */
2894                            imsg->cm_fields['W'] = strdup(recipient);
2895                            CtdlSubmitMsg(imsg, NULL, FNBL_QUEUE_ROOM, 0);
2896                            CtdlFreeMessage(imsg);
2897                         }
2898                 }
2899                 else {
2900                         CtdlLogPrintf(CTDL_DEBUG, "No user <%s>\n", recipient);
2901                         CtdlSaveMsgPointerInRoom(config.c_aideroom,
2902                                 newmsgid, 0, msg);
2903                 }
2904         }
2905
2906         /* Perform "after save" hooks */
2907         CtdlLogPrintf(CTDL_DEBUG, "Performing after-save hooks\n");
2908         PerformMessageHooks(msg, EVT_AFTERSAVE);
2909
2910         /* For IGnet mail, we have to save a new copy into the spooler for
2911          * each recipient, with the R and D fields set to the recipient and
2912          * destination-node.  This has two ugly side effects: all other
2913          * recipients end up being unlisted in this recipient's copy of the
2914          * message, and it has to deliver multiple messages to the same
2915          * node.  We'll revisit this again in a year or so when everyone has
2916          * a network spool receiver that can handle the new style messages.
2917          */
2918         if ((recps != NULL) && (recps->num_ignet > 0))
2919           for (i=0; i<num_tokens(recps->recp_ignet, '|'); ++i) {
2920                 extract_token(recipient, recps->recp_ignet, i,
2921                                 '|', sizeof recipient);
2922
2923                 hold_R = msg->cm_fields['R'];
2924                 hold_D = msg->cm_fields['D'];
2925                 msg->cm_fields['R'] = malloc(SIZ);
2926                 msg->cm_fields['D'] = malloc(128);
2927                 extract_token(msg->cm_fields['R'], recipient, 0, '@', SIZ);
2928                 extract_token(msg->cm_fields['D'], recipient, 1, '@', 128);
2929
2930                 serialize_message(&smr, msg);
2931                 if (smr.len > 0) {
2932                         snprintf(submit_filename, sizeof submit_filename,
2933                                          "%s/netmail.%04lx.%04x.%04x",
2934                                          ctdl_netin_dir,
2935                                          (long) getpid(), CCC->cs_pid, ++seqnum);
2936                         network_fp = fopen(submit_filename, "wb+");
2937                         if (network_fp != NULL) {
2938                                 fwrite(smr.ser, smr.len, 1, network_fp);
2939                                 fclose(network_fp);
2940                         }
2941                         free(smr.ser);
2942                 }
2943
2944                 free(msg->cm_fields['R']);
2945                 free(msg->cm_fields['D']);
2946                 msg->cm_fields['R'] = hold_R;
2947                 msg->cm_fields['D'] = hold_D;
2948         }
2949
2950         /* Go back to the room we started from */
2951         CtdlLogPrintf(CTDL_DEBUG, "Returning to original room %s\n", hold_rm);
2952         if (strcasecmp(hold_rm, CCC->room.QRname))
2953                 usergoto(hold_rm, 0, 1, NULL, NULL);
2954
2955         /* For internet mail, generate delivery instructions.
2956          * Yes, this is recursive.  Deal with it.  Infinite recursion does
2957          * not happen because the delivery instructions message does not
2958          * contain a recipient.
2959          */
2960         if ((recps != NULL) && (recps->num_internet > 0)) {
2961                 CtdlLogPrintf(CTDL_DEBUG, "Generating delivery instructions\n");
2962                 instr_alloc = 1024;
2963                 instr = malloc(instr_alloc);
2964                 snprintf(instr, instr_alloc,
2965                         "Content-type: %s\n\nmsgid|%ld\nsubmitted|%ld\n"
2966                         "bounceto|%s\n",
2967                         SPOOLMIME, newmsgid, (long)time(NULL),
2968                         bounce_to
2969                 );
2970
2971                 if (recps->envelope_from != NULL) {
2972                         tmp = strlen(instr);
2973                         snprintf(&instr[tmp], instr_alloc-tmp, "envelope_from|%s\n", recps->envelope_from);
2974                 }
2975
2976                 for (i=0; i<num_tokens(recps->recp_internet, '|'); ++i) {
2977                         tmp = strlen(instr);
2978                         extract_token(recipient, recps->recp_internet, i, '|', sizeof recipient);
2979                         if ((tmp + strlen(recipient) + 32) > instr_alloc) {
2980                                 instr_alloc = instr_alloc * 2;
2981                                 instr = realloc(instr, instr_alloc);
2982                         }
2983                         snprintf(&instr[tmp], instr_alloc - tmp, "remote|%s|0||\n", recipient);
2984                 }
2985
2986                 imsg = malloc(sizeof(struct CtdlMessage));
2987                 memset(imsg, 0, sizeof(struct CtdlMessage));
2988                 imsg->cm_magic = CTDLMESSAGE_MAGIC;
2989                 imsg->cm_anon_type = MES_NORMAL;
2990                 imsg->cm_format_type = FMT_RFC822;
2991                 imsg->cm_fields['A'] = strdup("Citadel");
2992                 imsg->cm_fields['J'] = strdup("do not journal");
2993                 imsg->cm_fields['M'] = instr;   /* imsg owns this memory now */
2994                 CtdlSubmitMsg(imsg, NULL, SMTP_SPOOLOUT_ROOM, QP_EADDR);
2995                 CtdlFreeMessage(imsg);
2996         }
2997
2998         /*
2999          * Any addresses to harvest for someone's address book?
3000          */
3001         if ( (CCC->logged_in) && (recps != NULL) ) {
3002                 collected_addresses = harvest_collected_addresses(msg);
3003         }
3004
3005         if (collected_addresses != NULL) {
3006                 aptr = (struct addresses_to_be_filed *)
3007                         malloc(sizeof(struct addresses_to_be_filed));
3008                 MailboxName(actual_rm, sizeof actual_rm,
3009                         &CCC->user, USERCONTACTSROOM);
3010                 aptr->roomname = strdup(actual_rm);
3011                 aptr->collected_addresses = collected_addresses;
3012                 begin_critical_section(S_ATBF);
3013                 aptr->next = atbf;
3014                 atbf = aptr;
3015                 end_critical_section(S_ATBF);
3016         }
3017
3018         /*
3019          * Determine whether this message qualifies for journaling.
3020          */
3021         if (msg->cm_fields['J'] != NULL) {
3022                 qualified_for_journaling = 0;
3023         }
3024         else {
3025                 if (recps == NULL) {
3026                         qualified_for_journaling = config.c_journal_pubmsgs;
3027                 }
3028                 else if (recps->num_local + recps->num_ignet + recps->num_internet > 0) {
3029                         qualified_for_journaling = config.c_journal_email;
3030                 }
3031                 else {
3032                         qualified_for_journaling = config.c_journal_pubmsgs;
3033                 }
3034         }
3035
3036         /*
3037          * Do we have to perform journaling?  If so, hand off the saved
3038          * RFC822 version will be handed off to the journaler for background
3039          * submit.  Otherwise, we have to free the memory ourselves.
3040          */
3041         if (saved_rfc822_version != NULL) {
3042                 if (qualified_for_journaling) {
3043                         JournalBackgroundSubmit(msg, saved_rfc822_version, recps);
3044                 }
3045                 else {
3046                         free(saved_rfc822_version);
3047                 }
3048         }
3049
3050         /* Done. */
3051         return(newmsgid);
3052 }
3053
3054
3055
3056
3057
3058 /*
3059  * Convenience function for generating small administrative messages.
3060  */
3061 void quickie_message(const char *from, const char *fromaddr, char *to, char *room, const char *text,
3062                         int format_type, const char *subject)
3063 {
3064         struct CtdlMessage *msg;
3065         struct recptypes *recp = NULL;
3066
3067         msg = malloc(sizeof(struct CtdlMessage));
3068         memset(msg, 0, sizeof(struct CtdlMessage));
3069         msg->cm_magic = CTDLMESSAGE_MAGIC;
3070         msg->cm_anon_type = MES_NORMAL;
3071         msg->cm_format_type = format_type;
3072
3073         if (from != NULL) {
3074                 msg->cm_fields['A'] = strdup(from);
3075         }
3076         else if (fromaddr != NULL) {
3077                 msg->cm_fields['A'] = strdup(fromaddr);
3078                 if (strchr(msg->cm_fields['A'], '@')) {
3079                         *strchr(msg->cm_fields['A'], '@') = 0;
3080                 }
3081         }
3082         else {
3083                 msg->cm_fields['A'] = strdup("Citadel");
3084         }
3085
3086         if (fromaddr != NULL) msg->cm_fields['F'] = strdup(fromaddr);
3087         if (room != NULL) msg->cm_fields['O'] = strdup(room);
3088         msg->cm_fields['N'] = strdup(NODENAME);
3089         if (to != NULL) {
3090                 msg->cm_fields['R'] = strdup(to);
3091                 recp = validate_recipients(to, NULL, 0);
3092         }
3093         if (subject != NULL) {
3094                 msg->cm_fields['U'] = strdup(subject);
3095         }
3096         msg->cm_fields['M'] = strdup(text);
3097
3098         CtdlSubmitMsg(msg, recp, room, 0);
3099         CtdlFreeMessage(msg);
3100         if (recp != NULL) free_recipients(recp);
3101 }
3102
3103
3104
3105 /*
3106  * Back end function used by CtdlMakeMessage() and similar functions
3107  */
3108 char *CtdlReadMessageBody(char *terminator,     /* token signalling EOT */
3109                         size_t maxlen,          /* maximum message length */
3110                         char *exist,            /* if non-null, append to it;
3111                                                    exist is ALWAYS freed  */
3112                         int crlf,               /* CRLF newlines instead of LF */
3113                         int sock                /* socket handle or 0 for this session's client socket */
3114                         ) {
3115         char buf[1024];
3116         int linelen;
3117         size_t message_len = 0;
3118         size_t buffer_len = 0;
3119         char *ptr;
3120         char *m;
3121         int flushing = 0;
3122         int finished = 0;
3123         int dotdot = 0;
3124
3125         if (exist == NULL) {
3126                 m = malloc(4096);
3127                 m[0] = 0;
3128                 buffer_len = 4096;
3129                 message_len = 0;
3130         }
3131         else {
3132                 message_len = strlen(exist);
3133                 buffer_len = message_len + 4096;
3134                 m = realloc(exist, buffer_len);
3135                 if (m == NULL) {
3136                         free(exist);
3137                         return m;
3138                 }
3139         }
3140
3141         /* Do we need to change leading ".." to "." for SMTP escaping? */
3142         if (!strcmp(terminator, ".")) {
3143                 dotdot = 1;
3144         }
3145
3146         /* flush the input if we have nowhere to store it */
3147         if (m == NULL) {
3148                 flushing = 1;
3149         }
3150
3151         /* read in the lines of message text one by one */
3152         do {
3153                 if (sock > 0) {
3154                         if (sock_getln(sock, buf, (sizeof buf - 3)) < 0) finished = 1;
3155                 }
3156                 else {
3157                         if (client_getln(buf, (sizeof buf - 3)) < 1) finished = 1;
3158                 }
3159                 if (!strcmp(buf, terminator)) finished = 1;
3160                 if (crlf) {
3161                         strcat(buf, "\r\n");
3162                 }
3163                 else {
3164                         strcat(buf, "\n");
3165                 }
3166
3167                 /* Unescape SMTP-style input of two dots at the beginning of the line */
3168                 if (dotdot) {
3169                         if (!strncmp(buf, "..", 2)) {
3170                                 strcpy(buf, &buf[1]);
3171                         }
3172                 }
3173
3174                 if ( (!flushing) && (!finished) ) {
3175                         /* Measure the line */
3176                         linelen = strlen(buf);
3177
3178                         /* augment the buffer if we have to */
3179                         if ((message_len + linelen) >= buffer_len) {
3180                                 ptr = realloc(m, (buffer_len * 2) );
3181                                 if (ptr == NULL) {      /* flush if can't allocate */
3182                                         flushing = 1;
3183                                 } else {
3184                                         buffer_len = (buffer_len * 2);
3185                                         m = ptr;
3186                                         CtdlLogPrintf(CTDL_DEBUG, "buffer_len is now %ld\n", (long)buffer_len);
3187                                 }
3188                         }
3189
3190                         /* Add the new line to the buffer.  NOTE: this loop must avoid
3191                         * using functions like strcat() and strlen() because they
3192                         * traverse the entire buffer upon every call, and doing that
3193                         * for a multi-megabyte message slows it down beyond usability.
3194                         */
3195                         strcpy(&m[message_len], buf);
3196                         message_len += linelen;
3197                 }
3198
3199                 /* if we've hit the max msg length, flush the rest */
3200                 if (message_len >= maxlen) flushing = 1;
3201
3202         } while (!finished);
3203         return(m);
3204 }
3205
3206
3207
3208
3209 /*
3210  * Build a binary message to be saved on disk.
3211  * (NOTE: if you supply 'preformatted_text', the buffer you give it
3212  * will become part of the message.  This means you are no longer
3213  * responsible for managing that memory -- it will be freed along with
3214  * the rest of the fields when CtdlFreeMessage() is called.)
3215  */
3216
3217 struct CtdlMessage *CtdlMakeMessage(
3218         struct ctdluser *author,        /* author's user structure */
3219         char *recipient,                /* NULL if it's not mail */
3220         char *recp_cc,                  /* NULL if it's not mail */
3221         char *room,                     /* room where it's going */
3222         int type,                       /* see MES_ types in header file */
3223         int format_type,                /* variformat, plain text, MIME... */
3224         char *fake_name,                /* who we're masquerading as */
3225         char *my_email,                 /* which of my email addresses to use (empty is ok) */
3226         char *subject,                  /* Subject (optional) */
3227         char *supplied_euid,            /* ...or NULL if this is irrelevant */
3228         char *preformatted_text,        /* ...or NULL to read text from client */
3229         char *references                /* Thread references */
3230 ) {
3231         char dest_node[256];
3232         char buf[1024];
3233         struct CtdlMessage *msg;
3234
3235         msg = malloc(sizeof(struct CtdlMessage));
3236         memset(msg, 0, sizeof(struct CtdlMessage));
3237         msg->cm_magic = CTDLMESSAGE_MAGIC;
3238         msg->cm_anon_type = type;
3239         msg->cm_format_type = format_type;
3240
3241         /* Don't confuse the poor folks if it's not routed mail. */
3242         strcpy(dest_node, "");
3243
3244         if (recipient != NULL) striplt(recipient);
3245         if (recp_cc != NULL) striplt(recp_cc);
3246
3247         /* Path or Return-Path */
3248         if (my_email == NULL) my_email = "";
3249
3250         if (!IsEmptyStr(my_email)) {
3251                 msg->cm_fields['P'] = strdup(my_email);
3252         }
3253         else {
3254                 snprintf(buf, sizeof buf, "%s", author->fullname);
3255                 msg->cm_fields['P'] = strdup(buf);
3256         }
3257         convert_spaces_to_underscores(msg->cm_fields['P']);
3258
3259         snprintf(buf, sizeof buf, "%ld", (long)time(NULL));     /* timestamp */
3260         msg->cm_fields['T'] = strdup(buf);
3261
3262         if ((fake_name != NULL) && (fake_name[0])) {            /* author */
3263                 msg->cm_fields['A'] = strdup(fake_name);
3264         }
3265         else {
3266                 msg->cm_fields['A'] = strdup(author->fullname);
3267         }
3268
3269         if (CC->room.QRflags & QR_MAILBOX) {            /* room */
3270                 msg->cm_fields['O'] = strdup(&CC->room.QRname[11]);
3271         }
3272         else {
3273                 msg->cm_fields['O'] = strdup(CC->room.QRname);
3274         }
3275
3276         msg->cm_fields['N'] = strdup(NODENAME);         /* nodename */
3277         msg->cm_fields['H'] = strdup(HUMANNODE);                /* hnodename */
3278
3279         if ((recipient != NULL) && (recipient[0] != 0)) {
3280                 msg->cm_fields['R'] = strdup(recipient);
3281         }
3282         if ((recp_cc != NULL) && (recp_cc[0] != 0)) {
3283                 msg->cm_fields['Y'] = strdup(recp_cc);
3284         }
3285         if (dest_node[0] != 0) {
3286                 msg->cm_fields['D'] = strdup(dest_node);
3287         }
3288
3289         if (!IsEmptyStr(my_email)) {
3290                 msg->cm_fields['F'] = strdup(my_email);
3291         }
3292         else if ( (author == &CC->user) && (!IsEmptyStr(CC->cs_inet_email)) ) {
3293                 msg->cm_fields['F'] = strdup(CC->cs_inet_email);
3294         }
3295
3296         if (subject != NULL) {
3297                 long length;
3298                 striplt(subject);
3299                 length = strlen(subject);
3300                 if (length > 0) {
3301                         long i;
3302                         long IsAscii;
3303                         IsAscii = -1;
3304                         i = 0;
3305                         while ((subject[i] != '\0') &&
3306                                (IsAscii = isascii(subject[i]) != 0 ))
3307                                 i++;
3308                         if (IsAscii != 0)
3309                                 msg->cm_fields['U'] = strdup(subject);
3310                         else /* ok, we've got utf8 in the string. */
3311                         {
3312                                 msg->cm_fields['U'] = rfc2047encode(subject, length);
3313                         }
3314
3315                 }
3316         }
3317
3318         if (supplied_euid != NULL) {
3319                 msg->cm_fields['E'] = strdup(supplied_euid);
3320         }
3321
3322         if (references != NULL) {
3323                 if (!IsEmptyStr(references)) {
3324                         msg->cm_fields['W'] = strdup(references);
3325                 }
3326         }
3327
3328         if (preformatted_text != NULL) {
3329                 msg->cm_fields['M'] = preformatted_text;
3330         }
3331         else {
3332                 msg->cm_fields['M'] = CtdlReadMessageBody("000", config.c_maxmsglen, NULL, 0, 0);
3333         }
3334
3335         return(msg);
3336 }
3337
3338
3339 /*
3340  * Check to see whether we have permission to post a message in the current
3341  * room.  Returns a *CITADEL ERROR CODE* and puts a message in errmsgbuf, or
3342  * returns 0 on success.
3343  */
3344 int CtdlDoIHavePermissionToPostInThisRoom(char *errmsgbuf,
3345                                           size_t n,
3346                                           const char* RemoteIdentifier,
3347                                           int PostPublic) {
3348         int ra;
3349
3350         if (!(CC->logged_in) &&
3351             (PostPublic == POST_LOGGED_IN)) {
3352                 snprintf(errmsgbuf, n, "Not logged in.");
3353                 return (ERROR + NOT_LOGGED_IN);
3354         }
3355         else if (PostPublic == CHECK_EXISTANCE) {
3356                 return (0); // We're Evaling whether a recipient exists
3357         }
3358         else if (!(CC->logged_in)) {
3359
3360                 if ((CC->room.QRflags & QR_READONLY)) {
3361                         snprintf(errmsgbuf, n, "Not logged in.");
3362                         return (ERROR + NOT_LOGGED_IN);
3363                 }
3364                 if (CC->room.QRflags2 & QR2_MODERATED) {
3365                         snprintf(errmsgbuf, n, "Not logged in Moderation feature not yet implemented!");
3366                         return (ERROR + NOT_LOGGED_IN);
3367                 }
3368                 if ((PostPublic!=POST_LMTP) &&(CC->room.QRflags2 & QR2_SMTP_PUBLIC) == 0) {
3369                         SpoolControl *sc;
3370                         char filename[SIZ];
3371                         int found;
3372
3373                         if (RemoteIdentifier == NULL)
3374                         {
3375                                 snprintf(errmsgbuf, n, "Need sender to permit access.");
3376                                 return (ERROR + USERNAME_REQUIRED);
3377                         }
3378
3379                         assoc_file_name(filename, sizeof filename, &CC->room, ctdl_netcfg_dir);
3380                         begin_critical_section(S_NETCONFIGS);
3381                         if (!read_spoolcontrol_file(&sc, filename))
3382                         {
3383                                 end_critical_section(S_NETCONFIGS);
3384                                 snprintf(errmsgbuf, n,
3385                                         "This mailing list only accepts posts from subscribers.");
3386                                 return (ERROR + NO_SUCH_USER);
3387                         }
3388                         end_critical_section(S_NETCONFIGS);
3389                         found = is_recipient (sc, RemoteIdentifier);
3390                         free_spoolcontrol_struct(&sc);
3391                         if (found) {
3392                                 return (0);
3393                         }
3394                         else {
3395                                 snprintf(errmsgbuf, n,
3396                                         "This mailing list only accepts posts from subscribers.");
3397                                 return (ERROR + NO_SUCH_USER);
3398                         }
3399                 }
3400                 return (0);
3401
3402         }
3403
3404         if ((CC->user.axlevel < 2)
3405             && ((CC->room.QRflags & QR_MAILBOX) == 0)) {
3406                 snprintf(errmsgbuf, n, "Need to be validated to enter "
3407                                 "(except in %s> to sysop)", MAILROOM);
3408                 return (ERROR + HIGHER_ACCESS_REQUIRED);
3409         }
3410
3411         CtdlRoomAccess(&CC->room, &CC->user, &ra, NULL);
3412         if (!(ra & UA_POSTALLOWED)) {
3413                 snprintf(errmsgbuf, n, "Higher access is required to post in this room.");
3414                 return (ERROR + HIGHER_ACCESS_REQUIRED);
3415         }
3416
3417         strcpy(errmsgbuf, "Ok");
3418         return(0);
3419 }
3420
3421
3422 /*
3423  * Check to see if the specified user has Internet mail permission
3424  * (returns nonzero if permission is granted)
3425  */
3426 int CtdlCheckInternetMailPermission(struct ctdluser *who) {
3427
3428         /* Do not allow twits to send Internet mail */
3429         if (who->axlevel <= 2) return(0);
3430
3431         /* Globally enabled? */
3432         if (config.c_restrict == 0) return(1);
3433
3434         /* User flagged ok? */
3435         if (who->flags & US_INTERNET) return(2);
3436
3437         /* Aide level access? */
3438         if (who->axlevel >= 6) return(3);
3439
3440         /* No mail for you! */
3441         return(0);
3442 }
3443
3444
3445 /*
3446  * Validate recipients, count delivery types and errors, and handle aliasing
3447  * FIXME check for dupes!!!!!
3448  *
3449  * Returns 0 if all addresses are ok, ret->num_error = -1 if no addresses
3450  * were specified, or the number of addresses found invalid.
3451  *
3452  * Caller needs to free the result using free_recipients()
3453  */
3454 struct recptypes *validate_recipients(char *supplied_recipients,
3455                                       const char *RemoteIdentifier,
3456                                       int Flags) {
3457         struct recptypes *ret;
3458         char *recipients = NULL;
3459         char this_recp[256];
3460         char this_recp_cooked[256];
3461         char append[SIZ];
3462         int num_recps = 0;
3463         int i, j;
3464         int mailtype;
3465         int invalid;
3466         struct ctdluser tempUS;
3467         struct ctdlroom tempQR;
3468         struct ctdlroom tempQR2;
3469         int err = 0;
3470         char errmsg[SIZ];
3471         int in_quotes = 0;
3472
3473         /* Initialize */
3474         ret = (struct recptypes *) malloc(sizeof(struct recptypes));
3475         if (ret == NULL) return(NULL);
3476
3477         /* Set all strings to null and numeric values to zero */
3478         memset(ret, 0, sizeof(struct recptypes));
3479
3480         if (supplied_recipients == NULL) {
3481                 recipients = strdup("");
3482         }
3483         else {
3484                 recipients = strdup(supplied_recipients);
3485         }
3486
3487         /* Allocate some memory.  Yes, this allocates 500% more memory than we will
3488          * actually need, but it's healthier for the heap than doing lots of tiny
3489          * realloc() calls instead.
3490          */
3491
3492         ret->errormsg = malloc(strlen(recipients) + 1024);
3493         ret->recp_local = malloc(strlen(recipients) + 1024);
3494         ret->recp_internet = malloc(strlen(recipients) + 1024);
3495         ret->recp_ignet = malloc(strlen(recipients) + 1024);
3496         ret->recp_room = malloc(strlen(recipients) + 1024);
3497         ret->display_recp = malloc(strlen(recipients) + 1024);
3498
3499         ret->errormsg[0] = 0;
3500         ret->recp_local[0] = 0;
3501         ret->recp_internet[0] = 0;
3502         ret->recp_ignet[0] = 0;
3503         ret->recp_room[0] = 0;
3504         ret->display_recp[0] = 0;
3505
3506         ret->recptypes_magic = RECPTYPES_MAGIC;
3507
3508         /* Change all valid separator characters to commas */
3509         for (i=0; !IsEmptyStr(&recipients[i]); ++i) {
3510                 if ((recipients[i] == ';') || (recipients[i] == '|')) {
3511                         recipients[i] = ',';
3512                 }
3513         }
3514
3515         /* Now start extracting recipients... */
3516
3517         while (!IsEmptyStr(recipients)) {
3518
3519                 for (i=0; i<=strlen(recipients); ++i) {
3520                         if (recipients[i] == '\"') in_quotes = 1 - in_quotes;
3521                         if ( ( (recipients[i] == ',') && (!in_quotes) ) || (recipients[i] == 0) ) {
3522                                 safestrncpy(this_recp, recipients, i+1);
3523                                 this_recp[i] = 0;
3524                                 if (recipients[i] == ',') {
3525                                         strcpy(recipients, &recipients[i+1]);
3526                                 }
3527                                 else {
3528                                         strcpy(recipients, "");
3529                                 }
3530                                 break;
3531                         }
3532                 }
3533
3534                 striplt(this_recp);
3535                 if (IsEmptyStr(this_recp))
3536                         break;
3537                 CtdlLogPrintf(CTDL_DEBUG, "Evaluating recipient #%d: %s\n", num_recps, this_recp);
3538                 ++num_recps;
3539                 mailtype = alias(this_recp);
3540                 mailtype = alias(this_recp);
3541                 mailtype = alias(this_recp);
3542                 j = 0;
3543                 for (j=0; !IsEmptyStr(&this_recp[j]); ++j) {
3544                         if (this_recp[j]=='_') {
3545                                 this_recp_cooked[j] = ' ';
3546                         }
3547                         else {
3548                                 this_recp_cooked[j] = this_recp[j];
3549                         }
3550                 }
3551                 this_recp_cooked[j] = '\0';
3552                 invalid = 0;
3553                 errmsg[0] = 0;
3554                 switch(mailtype) {
3555                         case MES_LOCAL:
3556                                 if (!strcasecmp(this_recp, "sysop")) {
3557                                         ++ret->num_room;
3558                                         strcpy(this_recp, config.c_aideroom);
3559                                         if (!IsEmptyStr(ret->recp_room)) {
3560                                                 strcat(ret->recp_room, "|");
3561                                         }
3562                                         strcat(ret->recp_room, this_recp);
3563                                 }
3564                                 else if ( (!strncasecmp(this_recp, "room_", 5))
3565                                       && (!getroom(&tempQR, &this_recp_cooked[5])) ) {
3566
3567                                         /* Save room so we can restore it later */
3568                                         tempQR2 = CC->room;
3569                                         CC->room = tempQR;
3570
3571                                         /* Check permissions to send mail to this room */
3572                                         err = CtdlDoIHavePermissionToPostInThisRoom(errmsg,
3573                                                                                     sizeof errmsg,
3574                                                                                     RemoteIdentifier,
3575                                                                                     Flags
3576                                         );
3577                                         if (err)
3578                                         {
3579                                                 ++ret->num_error;
3580                                                 invalid = 1;
3581                                         }
3582                                         else {
3583                                                 ++ret->num_room;
3584                                                 if (!IsEmptyStr(ret->recp_room)) {
3585                                                         strcat(ret->recp_room, "|");
3586                                                 }
3587                                                 strcat(ret->recp_room, &this_recp_cooked[5]);
3588                                         }
3589
3590                                         /* Restore room in case something needs it */
3591                                         CC->room = tempQR2;
3592
3593                                 }
3594                                 else if (getuser(&tempUS, this_recp) == 0) {
3595                                         ++ret->num_local;
3596                                         strcpy(this_recp, tempUS.fullname);
3597                                         if (!IsEmptyStr(ret->recp_local)) {
3598                                                 strcat(ret->recp_local, "|");
3599                                         }
3600                                         strcat(ret->recp_local, this_recp);
3601                                 }
3602                                 else if (getuser(&tempUS, this_recp_cooked) == 0) {
3603                                         ++ret->num_local;
3604                                         strcpy(this_recp, tempUS.fullname);
3605                                         if (!IsEmptyStr(ret->recp_local)) {
3606                                                 strcat(ret->recp_local, "|");
3607                                         }
3608                                         strcat(ret->recp_local, this_recp);
3609                                 }
3610                                 else {
3611                                         ++ret->num_error;
3612                                         invalid = 1;
3613                                 }
3614                                 break;
3615                         case MES_INTERNET:
3616                                 /* Yes, you're reading this correctly: if the target
3617                                  * domain points back to the local system or an attached
3618                                  * Citadel directory, the address is invalid.  That's
3619                                  * because if the address were valid, we would have
3620                                  * already translated it to a local address by now.
3621                                  */
3622                                 if (IsDirectory(this_recp, 0)) {
3623                                         ++ret->num_error;
3624                                         invalid = 1;
3625                                 }
3626                                 else {
3627                                         ++ret->num_internet;
3628                                         if (!IsEmptyStr(ret->recp_internet)) {
3629                                                 strcat(ret->recp_internet, "|");
3630                                         }
3631                                         strcat(ret->recp_internet, this_recp);
3632                                 }
3633                                 break;
3634                         case MES_IGNET:
3635                                 ++ret->num_ignet;
3636                                 if (!IsEmptyStr(ret->recp_ignet)) {
3637                                         strcat(ret->recp_ignet, "|");
3638                                 }
3639                                 strcat(ret->recp_ignet, this_recp);
3640                                 break;
3641                         case MES_ERROR:
3642                                 ++ret->num_error;
3643                                 invalid = 1;
3644                                 break;
3645                 }
3646                 if (invalid) {
3647                         if (IsEmptyStr(errmsg)) {
3648                                 snprintf(append, sizeof append, "Invalid recipient: %s", this_recp);
3649                         }
3650                         else {
3651                                 snprintf(append, sizeof append, "%s", errmsg);
3652                         }
3653                         if ( (strlen(ret->errormsg) + strlen(append) + 3) < SIZ) {
3654                                 if (!IsEmptyStr(ret->errormsg)) {
3655                                         strcat(ret->errormsg, "; ");
3656                                 }
3657                                 strcat(ret->errormsg, append);
3658                         }
3659                 }
3660                 else {
3661                         if (IsEmptyStr(ret->display_recp)) {
3662                                 strcpy(append, this_recp);
3663                         }
3664                         else {
3665                                 snprintf(append, sizeof append, ", %s", this_recp);
3666                         }
3667                         if ( (strlen(ret->display_recp)+strlen(append)) < SIZ) {
3668                                 strcat(ret->display_recp, append);
3669                         }
3670                 }
3671         }
3672
3673         if ((ret->num_local + ret->num_internet + ret->num_ignet +
3674            ret->num_room + ret->num_error) == 0) {
3675                 ret->num_error = (-1);
3676                 strcpy(ret->errormsg, "No recipients specified.");
3677         }
3678
3679         CtdlLogPrintf(CTDL_DEBUG, "validate_recipients()\n");
3680         CtdlLogPrintf(CTDL_DEBUG, " local: %d <%s>\n", ret->num_local, ret->recp_local);
3681         CtdlLogPrintf(CTDL_DEBUG, "  room: %d <%s>\n", ret->num_room, ret->recp_room);
3682         CtdlLogPrintf(CTDL_DEBUG, "  inet: %d <%s>\n", ret->num_internet, ret->recp_internet);
3683         CtdlLogPrintf(CTDL_DEBUG, " ignet: %d <%s>\n", ret->num_ignet, ret->recp_ignet);
3684         CtdlLogPrintf(CTDL_DEBUG, " error: %d <%s>\n", ret->num_error, ret->errormsg);
3685
3686         free(recipients);
3687         return(ret);
3688 }
3689
3690
3691 /*
3692  * Destructor for struct recptypes
3693  */
3694 void free_recipients(struct recptypes *valid) {
3695
3696         if (valid == NULL) {
3697                 return;
3698         }
3699
3700         if (valid->recptypes_magic != RECPTYPES_MAGIC) {
3701                 CtdlLogPrintf(CTDL_EMERG, "Attempt to call free_recipients() on some other data type!\n");
3702                 abort();
3703         }
3704
3705         if (valid->errormsg != NULL)            free(valid->errormsg);
3706         if (valid->recp_local != NULL)          free(valid->recp_local);
3707         if (valid->recp_internet != NULL)       free(valid->recp_internet);
3708         if (valid->recp_ignet != NULL)          free(valid->recp_ignet);
3709         if (valid->recp_room != NULL)           free(valid->recp_room);
3710         if (valid->display_recp != NULL)        free(valid->display_recp);
3711         if (valid->bounce_to != NULL)           free(valid->bounce_to);
3712         if (valid->envelope_from != NULL)       free(valid->envelope_from);
3713         free(valid);
3714 }
3715
3716
3717
3718 /*
3719  * message entry  -  mode 0 (normal)
3720  */
3721 void cmd_ent0(char *entargs)
3722 {
3723         int post = 0;
3724         char recp[SIZ];
3725         char cc[SIZ];
3726         char bcc[SIZ];
3727         char supplied_euid[128];
3728         int anon_flag = 0;
3729         int format_type = 0;
3730         char newusername[256];
3731         char newuseremail[256];
3732         struct CtdlMessage *msg;
3733         int anonymous = 0;
3734         char errmsg[SIZ];
3735         int err = 0;
3736         struct recptypes *valid = NULL;
3737         struct recptypes *valid_to = NULL;
3738         struct recptypes *valid_cc = NULL;
3739         struct recptypes *valid_bcc = NULL;
3740         char subject[SIZ];
3741         int subject_required = 0;
3742         int do_confirm = 0;
3743         long msgnum;
3744         int i, j;
3745         char buf[256];
3746         int newuseremail_ok = 0;
3747         char references[SIZ];
3748         char *ptr;
3749
3750         unbuffer_output();
3751
3752         post = extract_int(entargs, 0);
3753         extract_token(recp, entargs, 1, '|', sizeof recp);
3754         anon_flag = extract_int(entargs, 2);
3755         format_type = extract_int(entargs, 3);
3756         extract_token(subject, entargs, 4, '|', sizeof subject);
3757         extract_token(newusername, entargs, 5, '|', sizeof newusername);
3758         do_confirm = extract_int(entargs, 6);
3759         extract_token(cc, entargs, 7, '|', sizeof cc);
3760         extract_token(bcc, entargs, 8, '|', sizeof bcc);
3761         switch(CC->room.QRdefaultview) {
3762                 case VIEW_NOTES:
3763                 case VIEW_WIKI:
3764                         extract_token(supplied_euid, entargs, 9, '|', sizeof supplied_euid);
3765                         break;
3766                 default:
3767                         supplied_euid[0] = 0;
3768                         break;
3769         }
3770         extract_token(newuseremail, entargs, 10, '|', sizeof newuseremail);
3771         extract_token(references, entargs, 11, '|', sizeof references);
3772         for (ptr=references; *ptr != 0; ++ptr) {
3773                 if (*ptr == '!') *ptr = '|';
3774         }
3775
3776         /* first check to make sure the request is valid. */
3777
3778         err = CtdlDoIHavePermissionToPostInThisRoom(errmsg, sizeof errmsg, NULL, POST_LOGGED_IN);
3779         if (err)
3780         {
3781                 cprintf("%d %s\n", err, errmsg);
3782                 return;
3783         }
3784
3785         /* Check some other permission type things. */
3786
3787         if (IsEmptyStr(newusername)) {
3788                 strcpy(newusername, CC->user.fullname);
3789         }
3790         if (  (CC->user.axlevel < 6)
3791            && (strcasecmp(newusername, CC->user.fullname))
3792            && (strcasecmp(newusername, CC->cs_inet_fn))
3793         ) {
3794                 cprintf("%d You don't have permission to author messages as '%s'.\n",
3795                         ERROR + HIGHER_ACCESS_REQUIRED,
3796                         newusername
3797                 );
3798                 return;
3799         }
3800
3801
3802         if (IsEmptyStr(newuseremail)) {
3803                 newuseremail_ok = 1;
3804         }
3805
3806         if (!IsEmptyStr(newuseremail)) {
3807                 if (!strcasecmp(newuseremail, CC->cs_inet_email)) {
3808                         newuseremail_ok = 1;
3809                 }
3810                 else if (!IsEmptyStr(CC->cs_inet_other_emails)) {
3811                         j = num_tokens(CC->cs_inet_other_emails, '|');
3812                         for (i=0; i<j; ++i) {
3813                                 extract_token(buf, CC->cs_inet_other_emails, i, '|', sizeof buf);
3814                                 if (!strcasecmp(newuseremail, buf)) {
3815                                         newuseremail_ok = 1;
3816                                 }
3817                         }
3818                 }
3819         }
3820
3821         if (!newuseremail_ok) {
3822                 cprintf("%d You don't have permission to author messages as '%s'.\n",
3823                         ERROR + HIGHER_ACCESS_REQUIRED,
3824                         newuseremail
3825                 );
3826                 return;
3827         }
3828
3829         CC->cs_flags |= CS_POSTING;
3830
3831         /* In mailbox rooms we have to behave a little differently --
3832          * make sure the user has specified at least one recipient.  Then
3833          * validate the recipient(s).  We do this for the Mail> room, as
3834          * well as any room which has the "Mailbox" view set.
3835          */
3836
3837         if (  ( (CC->room.QRflags & QR_MAILBOX) && (!strcasecmp(&CC->room.QRname[11], MAILROOM)) )
3838            || ( (CC->room.QRflags & QR_MAILBOX) && (CC->curr_view == VIEW_MAILBOX) )
3839         ) {
3840                 if (CC->user.axlevel < 2) {
3841                         strcpy(recp, "sysop");
3842                         strcpy(cc, "");
3843                         strcpy(bcc, "");
3844                 }
3845
3846                 valid_to = validate_recipients(recp, NULL, 0);
3847                 if (valid_to->num_error > 0) {
3848                         cprintf("%d %s\n", ERROR + NO_SUCH_USER, valid_to->errormsg);
3849                         free_recipients(valid_to);
3850                         return;
3851                 }
3852
3853                 valid_cc = validate_recipients(cc, NULL, 0);
3854                 if (valid_cc->num_error > 0) {
3855                         cprintf("%d %s\n", ERROR + NO_SUCH_USER, valid_cc->errormsg);
3856                         free_recipients(valid_to);
3857                         free_recipients(valid_cc);
3858                         return;
3859                 }
3860
3861                 valid_bcc = validate_recipients(bcc, NULL, 0);
3862                 if (valid_bcc->num_error > 0) {
3863                         cprintf("%d %s\n", ERROR + NO_SUCH_USER, valid_bcc->errormsg);
3864                         free_recipients(valid_to);
3865                         free_recipients(valid_cc);
3866                         free_recipients(valid_bcc);
3867                         return;
3868                 }
3869
3870                 /* Recipient required, but none were specified */
3871                 if ( (valid_to->num_error < 0) && (valid_cc->num_error < 0) && (valid_bcc->num_error < 0) ) {
3872                         free_recipients(valid_to);
3873                         free_recipients(valid_cc);
3874                         free_recipients(valid_bcc);
3875                         cprintf("%d At least one recipient is required.\n", ERROR + NO_SUCH_USER);
3876                         return;
3877                 }
3878
3879                 if (valid_to->num_internet + valid_cc->num_internet + valid_bcc->num_internet > 0) {
3880                         if (CtdlCheckInternetMailPermission(&CC->user)==0) {
3881                                 cprintf("%d You do not have permission "
3882                                         "to send Internet mail.\n",
3883                                         ERROR + HIGHER_ACCESS_REQUIRED);
3884                                 free_recipients(valid_to);
3885                                 free_recipients(valid_cc);
3886                                 free_recipients(valid_bcc);
3887                                 return;
3888                         }
3889                 }
3890
3891                 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)
3892                    && (CC->user.axlevel < 4) ) {
3893                         cprintf("%d Higher access required for network mail.\n",
3894                                 ERROR + HIGHER_ACCESS_REQUIRED);
3895                         free_recipients(valid_to);
3896                         free_recipients(valid_cc);
3897                         free_recipients(valid_bcc);
3898                         return;
3899                 }
3900
3901                 if ((RESTRICT_INTERNET == 1)
3902                     && (valid_to->num_internet + valid_cc->num_internet + valid_bcc->num_internet > 0)
3903                     && ((CC->user.flags & US_INTERNET) == 0)
3904                     && (!CC->internal_pgm)) {
3905                         cprintf("%d You don't have access to Internet mail.\n",
3906                                 ERROR + HIGHER_ACCESS_REQUIRED);
3907                         free_recipients(valid_to);
3908                         free_recipients(valid_cc);
3909                         free_recipients(valid_bcc);
3910                         return;
3911                 }
3912
3913         }
3914
3915         /* Is this a room which has anonymous-only or anonymous-option? */
3916         anonymous = MES_NORMAL;
3917         if (CC->room.QRflags & QR_ANONONLY) {
3918                 anonymous = MES_ANONONLY;
3919         }
3920         if (CC->room.QRflags & QR_ANONOPT) {
3921                 if (anon_flag == 1) {   /* only if the user requested it */
3922                         anonymous = MES_ANONOPT;
3923                 }
3924         }
3925
3926         if ((CC->room.QRflags & QR_MAILBOX) == 0) {
3927                 recp[0] = 0;
3928         }
3929
3930         /* Recommend to the client that the use of a message subject is
3931          * strongly recommended in this room, if either the SUBJECTREQ flag
3932          * is set, or if there is one or more Internet email recipients.
3933          */
3934         if (CC->room.QRflags2 & QR2_SUBJECTREQ) subject_required = 1;
3935         if ((valid_to)  && (valid_to->num_internet > 0))        subject_required = 1;
3936         if ((valid_cc)  && (valid_cc->num_internet > 0))        subject_required = 1;
3937         if ((valid_bcc) && (valid_bcc->num_internet > 0))       subject_required = 1;
3938
3939         /* If we're only checking the validity of the request, return
3940          * success without creating the message.
3941          */
3942         if (post == 0) {
3943                 cprintf("%d %s|%d\n", CIT_OK,
3944                         ((valid_to != NULL) ? valid_to->display_recp : ""),
3945                         subject_required);
3946                 free_recipients(valid_to);
3947                 free_recipients(valid_cc);
3948                 free_recipients(valid_bcc);
3949                 return;
3950         }
3951
3952         /* We don't need these anymore because we'll do it differently below */
3953         free_recipients(valid_to);
3954         free_recipients(valid_cc);
3955         free_recipients(valid_bcc);
3956
3957         /* Read in the message from the client. */
3958         if (do_confirm) {
3959                 cprintf("%d send message\n", START_CHAT_MODE);
3960         } else {
3961                 cprintf("%d send message\n", SEND_LISTING);
3962         }
3963
3964         msg = CtdlMakeMessage(&CC->user, recp, cc,
3965                 CC->room.QRname, anonymous, format_type,
3966                 newusername, newuseremail, subject,
3967                 ((!IsEmptyStr(supplied_euid)) ? supplied_euid : NULL),
3968                 NULL, references);
3969
3970         /* Put together one big recipients struct containing to/cc/bcc all in
3971          * one.  This is for the envelope.
3972          */
3973         char *all_recps = malloc(SIZ * 3);
3974         strcpy(all_recps, recp);
3975         if (!IsEmptyStr(cc)) {
3976                 if (!IsEmptyStr(all_recps)) {
3977                         strcat(all_recps, ",");
3978                 }
3979                 strcat(all_recps, cc);
3980         }
3981         if (!IsEmptyStr(bcc)) {
3982                 if (!IsEmptyStr(all_recps)) {
3983                         strcat(all_recps, ",");
3984                 }
3985                 strcat(all_recps, bcc);
3986         }
3987         if (!IsEmptyStr(all_recps)) {
3988                 valid = validate_recipients(all_recps, NULL, 0);
3989         }
3990         else {
3991                 valid = NULL;
3992         }
3993         free(all_recps);
3994
3995         if (msg != NULL) {
3996                 msgnum = CtdlSubmitMsg(msg, valid, "", QP_EADDR);
3997
3998                 if (do_confirm) {
3999                         cprintf("%ld\n", msgnum);
4000                         if (msgnum >= 0L) {
4001                                 cprintf("Message accepted.\n");
4002                         }
4003                         else {
4004                                 cprintf("Internal error.\n");
4005                         }
4006                         if (msg->cm_fields['E'] != NULL) {
4007                                 cprintf("%s\n", msg->cm_fields['E']);
4008                         } else {
4009                                 cprintf("\n");
4010                         }
4011                         cprintf("000\n");
4012                 }
4013
4014                 CtdlFreeMessage(msg);
4015         }
4016         if (valid != NULL) {
4017                 free_recipients(valid);
4018         }
4019         return;
4020 }
4021
4022
4023
4024 /*
4025  * API function to delete messages which match a set of criteria
4026  * (returns the actual number of messages deleted)
4027  */
4028 int CtdlDeleteMessages(char *room_name,         /* which room */
4029                         long *dmsgnums,         /* array of msg numbers to be deleted */
4030                         int num_dmsgnums,       /* number of msgs to be deleted, or 0 for "any" */
4031                         char *content_type      /* or "" for any.  regular expressions expected. */
4032 )
4033 {
4034         struct ctdlroom qrbuf;
4035         struct cdbdata *cdbfr;
4036         long *msglist = NULL;
4037         long *dellist = NULL;
4038         int num_msgs = 0;
4039         int i, j;
4040         int num_deleted = 0;
4041         int delete_this;
4042         struct MetaData smi;
4043         regex_t re;
4044         regmatch_t pm;
4045         int need_to_free_re = 0;
4046
4047         if (content_type) if (!IsEmptyStr(content_type)) {
4048                 regcomp(&re, content_type, 0);
4049                 need_to_free_re = 1;
4050         }
4051         CtdlLogPrintf(CTDL_DEBUG, "CtdlDeleteMessages(%s, %d msgs, %s)\n",
4052                 room_name, num_dmsgnums, content_type);
4053
4054         /* get room record, obtaining a lock... */
4055         if (lgetroom(&qrbuf, room_name) != 0) {
4056                 CtdlLogPrintf(CTDL_ERR, "CtdlDeleteMessages(): Room <%s> not found\n",
4057                         room_name);
4058                 if (need_to_free_re) regfree(&re);
4059                 return (0);     /* room not found */
4060         }
4061         cdbfr = cdb_fetch(CDB_MSGLISTS, &qrbuf.QRnumber, sizeof(long));
4062
4063         if (cdbfr != NULL) {
4064                 dellist = malloc(cdbfr->len);
4065                 msglist = (long *) cdbfr->ptr;
4066                 cdbfr->ptr = NULL;      /* CtdlDeleteMessages() now owns this memory */
4067                 num_msgs = cdbfr->len / sizeof(long);
4068                 cdb_free(cdbfr);
4069         }
4070         if (num_msgs > 0) {
4071                 for (i = 0; i < num_msgs; ++i) {
4072                         delete_this = 0x00;
4073
4074                         /* Set/clear a bit for each criterion */
4075
4076                         /* 0 messages in the list or a null list means that we are
4077                          * interested in deleting any messages which meet the other criteria.
4078                          */
4079                         if ((num_dmsgnums == 0) || (dmsgnums == NULL)) {
4080                                 delete_this |= 0x01;
4081                         }
4082                         else {
4083                                 for (j=0; j<num_dmsgnums; ++j) {
4084                                         if (msglist[i] == dmsgnums[j]) {
4085                                                 delete_this |= 0x01;
4086                                         }
4087                                 }
4088                         }
4089
4090                         if (IsEmptyStr(content_type)) {
4091                                 delete_this |= 0x02;
4092                         } else {
4093                                 GetMetaData(&smi, msglist[i]);
4094                                 if (regexec(&re, smi.meta_content_type, 1, &pm, 0) == 0) {
4095                                         delete_this |= 0x02;
4096                                 }
4097                         }
4098
4099                         /* Delete message only if all bits are set */
4100                         if (delete_this == 0x03) {
4101                                 dellist[num_deleted++] = msglist[i];
4102                                 msglist[i] = 0L;
4103                         }
4104                 }
4105
4106                 num_msgs = sort_msglist(msglist, num_msgs);
4107                 cdb_store(CDB_MSGLISTS, &qrbuf.QRnumber, (int)sizeof(long),
4108                           msglist, (int)(num_msgs * sizeof(long)));
4109
4110                 qrbuf.QRhighest = msglist[num_msgs - 1];
4111         }
4112         lputroom(&qrbuf);
4113
4114         /* Go through the messages we pulled out of the index, and decrement
4115          * their reference counts by 1.  If this is the only room the message
4116          * was in, the reference count will reach zero and the message will
4117          * automatically be deleted from the database.  We do this in a
4118          * separate pass because there might be plug-in hooks getting called,
4119          * and we don't want that happening during an S_ROOMS critical
4120          * section.
4121          */
4122         if (num_deleted) for (i=0; i<num_deleted; ++i) {
4123                 PerformDeleteHooks(qrbuf.QRname, dellist[i]);
4124                 AdjRefCount(dellist[i], -1);
4125         }
4126
4127         /* Now free the memory we used, and go away. */
4128         if (msglist != NULL) free(msglist);
4129         if (dellist != NULL) free(dellist);
4130         CtdlLogPrintf(CTDL_DEBUG, "%d message(s) deleted.\n", num_deleted);
4131         if (need_to_free_re) regfree(&re);
4132         return (num_deleted);
4133 }
4134
4135
4136
4137 /*
4138  * Check whether the current user has permission to delete messages from
4139  * the current room (returns 1 for yes, 0 for no)
4140  */
4141 int CtdlDoIHavePermissionToDeleteMessagesFromThisRoom(void) {
4142         int ra;
4143         CtdlRoomAccess(&CC->room, &CC->user, &ra, NULL);
4144         if (ra & UA_DELETEALLOWED) return(1);
4145         return(0);
4146 }
4147
4148
4149
4150
4151 /*
4152  * Delete message from current room
4153  */
4154 void cmd_dele(char *args)
4155 {
4156         int num_deleted;
4157         int i;
4158         char msgset[SIZ];
4159         char msgtok[32];
4160         long *msgs;
4161         int num_msgs = 0;
4162
4163         extract_token(msgset, args, 0, '|', sizeof msgset);
4164         num_msgs = num_tokens(msgset, ',');
4165         if (num_msgs < 1) {
4166                 cprintf("%d Nothing to do.\n", CIT_OK);
4167                 return;
4168         }
4169
4170         if (CtdlDoIHavePermissionToDeleteMessagesFromThisRoom() == 0) {
4171                 cprintf("%d Higher access required.\n",
4172                         ERROR + HIGHER_ACCESS_REQUIRED);
4173                 return;
4174         }
4175
4176         /*
4177          * Build our message set to be moved/copied
4178          */
4179         msgs = malloc(num_msgs * sizeof(long));
4180         for (i=0; i<num_msgs; ++i) {
4181                 extract_token(msgtok, msgset, i, ',', sizeof msgtok);
4182                 msgs[i] = atol(msgtok);
4183         }
4184
4185         num_deleted = CtdlDeleteMessages(CC->room.QRname, msgs, num_msgs, "");
4186         free(msgs);
4187
4188         if (num_deleted) {
4189                 cprintf("%d %d message%s deleted.\n", CIT_OK,
4190                         num_deleted, ((num_deleted != 1) ? "s" : ""));
4191         } else {
4192                 cprintf("%d Message not found.\n", ERROR + MESSAGE_NOT_FOUND);
4193         }
4194 }
4195
4196
4197
4198
4199 /*
4200  * move or copy a message to another room
4201  */
4202 void cmd_move(char *args)
4203 {
4204         char msgset[SIZ];
4205         char msgtok[32];
4206         long *msgs;
4207         int num_msgs = 0;
4208
4209         char targ[ROOMNAMELEN];
4210         struct ctdlroom qtemp;
4211         int err;
4212         int is_copy = 0;
4213         int ra;
4214         int permit = 0;
4215         int i;
4216
4217         extract_token(msgset, args, 0, '|', sizeof msgset);
4218         num_msgs = num_tokens(msgset, ',');
4219         if (num_msgs < 1) {
4220                 cprintf("%d Nothing to do.\n", CIT_OK);
4221                 return;
4222         }
4223
4224         extract_token(targ, args, 1, '|', sizeof targ);
4225         convert_room_name_macros(targ, sizeof targ);
4226         targ[ROOMNAMELEN - 1] = 0;
4227         is_copy = extract_int(args, 2);
4228
4229         if (getroom(&qtemp, targ) != 0) {
4230                 cprintf("%d '%s' does not exist.\n", ERROR + ROOM_NOT_FOUND, targ);
4231                 return;
4232         }
4233
4234         if (!strcasecmp(qtemp.QRname, CC->room.QRname)) {
4235                 cprintf("%d Source and target rooms are the same.\n", ERROR + ALREADY_EXISTS);
4236                 return;
4237         }
4238
4239         getuser(&CC->user, CC->curr_user);
4240         CtdlRoomAccess(&qtemp, &CC->user, &ra, NULL);
4241
4242         /* Check for permission to perform this operation.
4243          * Remember: "CC->room" is source, "qtemp" is target.
4244          */
4245         permit = 0;
4246
4247         /* Aides can move/copy */
4248         if (CC->user.axlevel >= 6) permit = 1;
4249
4250         /* Room aides can move/copy */
4251         if (CC->user.usernum == CC->room.QRroomaide) permit = 1;
4252
4253         /* Permit move/copy from personal rooms */
4254         if ((CC->room.QRflags & QR_MAILBOX)
4255            && (qtemp.QRflags & QR_MAILBOX)) permit = 1;
4256
4257         /* Permit only copy from public to personal room */
4258         if ( (is_copy)
4259            && (!(CC->room.QRflags & QR_MAILBOX))
4260            && (qtemp.QRflags & QR_MAILBOX)) permit = 1;
4261
4262         /* Permit message removal from collaborative delete rooms */
4263         if (CC->room.QRflags2 & QR2_COLLABDEL) permit = 1;
4264
4265         /* Users allowed to post into the target room may move into it too. */
4266         if ((CC->room.QRflags & QR_MAILBOX) &&
4267             (qtemp.QRflags & UA_POSTALLOWED))  permit = 1;
4268
4269         /* User must have access to target room */
4270         if (!(ra & UA_KNOWN))  permit = 0;
4271
4272         if (!permit) {
4273                 cprintf("%d Higher access required.\n",
4274                         ERROR + HIGHER_ACCESS_REQUIRED);
4275                 return;
4276         }
4277
4278         /*
4279          * Build our message set to be moved/copied
4280          */
4281         msgs = malloc(num_msgs * sizeof(long));
4282         for (i=0; i<num_msgs; ++i) {
4283                 extract_token(msgtok, msgset, i, ',', sizeof msgtok);
4284                 msgs[i] = atol(msgtok);
4285         }
4286
4287         /*
4288          * Do the copy
4289          */
4290         err = CtdlSaveMsgPointersInRoom(targ, msgs, num_msgs, 1, NULL);
4291         if (err != 0) {
4292                 cprintf("%d Cannot store message(s) in %s: error %d\n",
4293                         err, targ, err);
4294                 free(msgs);
4295                 return;
4296         }
4297
4298         /* Now delete the message from the source room,
4299          * if this is a 'move' rather than a 'copy' operation.
4300          */
4301         if (is_copy == 0) {
4302                 CtdlDeleteMessages(CC->room.QRname, msgs, num_msgs, "");
4303         }
4304         free(msgs);
4305
4306         cprintf("%d Message(s) %s.\n", CIT_OK, (is_copy ? "copied" : "moved") );
4307 }
4308
4309
4310
4311 /*
4312  * GetMetaData()  -  Get the supplementary record for a message
4313  */
4314 void GetMetaData(struct MetaData *smibuf, long msgnum)
4315 {
4316
4317         struct cdbdata *cdbsmi;
4318         long TheIndex;
4319
4320         memset(smibuf, 0, sizeof(struct MetaData));
4321         smibuf->meta_msgnum = msgnum;
4322         smibuf->meta_refcount = 1;      /* Default reference count is 1 */
4323
4324         /* Use the negative of the message number for its supp record index */
4325         TheIndex = (0L - msgnum);
4326
4327         cdbsmi = cdb_fetch(CDB_MSGMAIN, &TheIndex, sizeof(long));
4328         if (cdbsmi == NULL) {
4329                 return;         /* record not found; go with defaults */
4330         }
4331         memcpy(smibuf, cdbsmi->ptr,
4332                ((cdbsmi->len > sizeof(struct MetaData)) ?
4333                 sizeof(struct MetaData) : cdbsmi->len));
4334         cdb_free(cdbsmi);
4335         return;
4336 }
4337
4338
4339 /*
4340  * PutMetaData()  -  (re)write supplementary record for a message
4341  */
4342 void PutMetaData(struct MetaData *smibuf)
4343 {
4344         long TheIndex;
4345
4346         /* Use the negative of the message number for the metadata db index */
4347         TheIndex = (0L - smibuf->meta_msgnum);
4348
4349         cdb_store(CDB_MSGMAIN,
4350                   &TheIndex, (int)sizeof(long),
4351                   smibuf, (int)sizeof(struct MetaData));
4352
4353 }
4354
4355 /*
4356  * AdjRefCount  -  submit an adjustment to the reference count for a message.
4357  *                 (These are just queued -- we actually process them later.)
4358  */
4359 void AdjRefCount(long msgnum, int incr)
4360 {
4361         struct arcq new_arcq;
4362
4363         begin_critical_section(S_SUPPMSGMAIN);
4364         if (arcfp == NULL) {
4365                 arcfp = fopen(file_arcq, "ab+");
4366         }
4367         end_critical_section(S_SUPPMSGMAIN);
4368
4369         /* msgnum < 0 means that we're trying to close the file */
4370         if (msgnum < 0) {
4371                 CtdlLogPrintf(CTDL_DEBUG, "Closing the AdjRefCount queue file\n");
4372                 begin_critical_section(S_SUPPMSGMAIN);
4373                 if (arcfp != NULL) {
4374                         fclose(arcfp);
4375                         arcfp = NULL;
4376                 }
4377                 end_critical_section(S_SUPPMSGMAIN);
4378                 return;
4379         }
4380
4381         /*
4382          * If we can't open the queue, perform the operation synchronously.
4383          */
4384         if (arcfp == NULL) {
4385                 TDAP_AdjRefCount(msgnum, incr);
4386                 return;
4387         }
4388
4389         new_arcq.arcq_msgnum = msgnum;
4390         new_arcq.arcq_delta = incr;
4391         fwrite(&new_arcq, sizeof(struct arcq), 1, arcfp);
4392         fflush(arcfp);
4393
4394         return;
4395 }
4396
4397
4398 /*
4399  * TDAP_ProcessAdjRefCountQueue()
4400  *
4401  * Process the queue of message count adjustments that was created by calls
4402  * to AdjRefCount() ... by reading the queue and calling TDAP_AdjRefCount()
4403  * for each one.  This should be an "off hours" operation.
4404  */
4405 int TDAP_ProcessAdjRefCountQueue(void)
4406 {
4407         char file_arcq_temp[PATH_MAX];
4408         int r;
4409         FILE *fp;
4410         struct arcq arcq_rec;
4411         int num_records_processed = 0;
4412
4413         snprintf(file_arcq_temp, sizeof file_arcq_temp, "%s.%04x", file_arcq, rand());
4414
4415         begin_critical_section(S_SUPPMSGMAIN);
4416         if (arcfp != NULL) {
4417                 fclose(arcfp);
4418                 arcfp = NULL;
4419         }
4420
4421         r = link(file_arcq, file_arcq_temp);
4422         if (r != 0) {
4423                 CtdlLogPrintf(CTDL_CRIT, "%s: %s\n", file_arcq_temp, strerror(errno));
4424                 end_critical_section(S_SUPPMSGMAIN);
4425                 return(num_records_processed);
4426         }
4427
4428         unlink(file_arcq);
4429         end_critical_section(S_SUPPMSGMAIN);
4430
4431         fp = fopen(file_arcq_temp, "rb");
4432         if (fp == NULL) {
4433                 CtdlLogPrintf(CTDL_CRIT, "%s: %s\n", file_arcq_temp, strerror(errno));
4434                 return(num_records_processed);
4435         }
4436
4437         while (fread(&arcq_rec, sizeof(struct arcq), 1, fp) == 1) {
4438                 TDAP_AdjRefCount(arcq_rec.arcq_msgnum, arcq_rec.arcq_delta);
4439                 ++num_records_processed;
4440         }
4441
4442         fclose(fp);
4443         r = unlink(file_arcq_temp);
4444         if (r != 0) {
4445                 CtdlLogPrintf(CTDL_CRIT, "%s: %s\n", file_arcq_temp, strerror(errno));
4446         }
4447
4448         return(num_records_processed);
4449 }
4450
4451
4452
4453 /*
4454  * TDAP_AdjRefCount  -  adjust the reference count for a message.
4455  *                      This one does it "for real" because it's called by
4456  *                      the autopurger function that processes the queue
4457  *                      created by AdjRefCount().   If a message's reference
4458  *                      count becomes zero, we also delete the message from
4459  *                      disk and de-index it.
4460  */
4461 void TDAP_AdjRefCount(long msgnum, int incr)
4462 {
4463
4464         struct MetaData smi;
4465         long delnum;
4466
4467         /* This is a *tight* critical section; please keep it that way, as
4468          * it may get called while nested in other critical sections.
4469          * Complicating this any further will surely cause deadlock!
4470          */
4471         begin_critical_section(S_SUPPMSGMAIN);
4472         GetMetaData(&smi, msgnum);
4473         smi.meta_refcount += incr;
4474         PutMetaData(&smi);
4475         end_critical_section(S_SUPPMSGMAIN);
4476         CtdlLogPrintf(CTDL_DEBUG, "msg %ld ref count delta %+d, is now %d\n",
4477                 msgnum, incr, smi.meta_refcount);
4478
4479         /* If the reference count is now zero, delete the message
4480          * (and its supplementary record as well).
4481          */
4482         if (smi.meta_refcount == 0) {
4483                 CtdlLogPrintf(CTDL_DEBUG, "Deleting message <%ld>\n", msgnum);
4484
4485                 /* Call delete hooks with NULL room to show it has gone altogether */
4486                 PerformDeleteHooks(NULL, msgnum);
4487
4488                 /* Remove from message base */
4489                 delnum = msgnum;
4490                 cdb_delete(CDB_MSGMAIN, &delnum, (int)sizeof(long));
4491                 cdb_delete(CDB_BIGMSGS, &delnum, (int)sizeof(long));
4492
4493                 /* Remove metadata record */
4494                 delnum = (0L - msgnum);
4495                 cdb_delete(CDB_MSGMAIN, &delnum, (int)sizeof(long));
4496         }
4497
4498 }
4499
4500 /*
4501  * Write a generic object to this room
4502  *
4503  * Note: this could be much more efficient.  Right now we use two temporary
4504  * files, and still pull the message into memory as with all others.
4505  */
4506 void CtdlWriteObject(char *req_room,                    /* Room to stuff it in */
4507                         char *content_type,             /* MIME type of this object */
4508                         char *raw_message,              /* Data to be written */
4509                         off_t raw_length,               /* Size of raw_message */
4510                         struct ctdluser *is_mailbox,    /* Mailbox room? */
4511                         int is_binary,                  /* Is encoding necessary? */
4512                         int is_unique,                  /* Del others of this type? */
4513                         unsigned int flags              /* Internal save flags */
4514                         )
4515 {
4516
4517         struct ctdlroom qrbuf;
4518         char roomname[ROOMNAMELEN];
4519         struct CtdlMessage *msg;
4520         char *encoded_message = NULL;
4521
4522         if (is_mailbox != NULL) {
4523                 MailboxName(roomname, sizeof roomname, is_mailbox, req_room);
4524         }
4525         else {
4526                 safestrncpy(roomname, req_room, sizeof(roomname));
4527         }
4528
4529         CtdlLogPrintf(CTDL_DEBUG, "Raw length is %ld\n", (long)raw_length);
4530
4531         if (is_binary) {
4532                 encoded_message = malloc((size_t) (((raw_length * 134) / 100) + 4096 ) );
4533         }
4534         else {
4535                 encoded_message = malloc((size_t)(raw_length + 4096));
4536         }
4537
4538         sprintf(encoded_message, "Content-type: %s\n", content_type);
4539
4540         if (is_binary) {
4541                 sprintf(&encoded_message[strlen(encoded_message)],
4542                         "Content-transfer-encoding: base64\n\n"
4543                 );
4544         }
4545         else {
4546                 sprintf(&encoded_message[strlen(encoded_message)],
4547                         "Content-transfer-encoding: 7bit\n\n"
4548                 );
4549         }
4550
4551         if (is_binary) {
4552                 CtdlEncodeBase64(
4553                         &encoded_message[strlen(encoded_message)],
4554                         raw_message,
4555                         (int)raw_length,
4556                         0
4557                 );
4558         }
4559         else {
4560                 memcpy(
4561                         &encoded_message[strlen(encoded_message)],
4562                         raw_message,
4563                         (int)(raw_length+1)
4564                 );
4565         }
4566
4567         CtdlLogPrintf(CTDL_DEBUG, "Allocating\n");
4568         msg = malloc(sizeof(struct CtdlMessage));
4569         memset(msg, 0, sizeof(struct CtdlMessage));
4570         msg->cm_magic = CTDLMESSAGE_MAGIC;
4571         msg->cm_anon_type = MES_NORMAL;
4572         msg->cm_format_type = 4;
4573         msg->cm_fields['A'] = strdup(CC->user.fullname);
4574         msg->cm_fields['O'] = strdup(req_room);
4575         msg->cm_fields['N'] = strdup(config.c_nodename);
4576         msg->cm_fields['H'] = strdup(config.c_humannode);
4577         msg->cm_flags = flags;
4578
4579         msg->cm_fields['M'] = encoded_message;
4580
4581         /* Create the requested room if we have to. */
4582         if (getroom(&qrbuf, roomname) != 0) {
4583                 create_room(roomname,
4584                         ( (is_mailbox != NULL) ? 5 : 3 ),
4585                         "", 0, 1, 0, VIEW_BBS);
4586         }
4587         /* If the caller specified this object as unique, delete all
4588          * other objects of this type that are currently in the room.
4589          */
4590         if (is_unique) {
4591                 CtdlLogPrintf(CTDL_DEBUG, "Deleted %d other msgs of this type\n",
4592                         CtdlDeleteMessages(roomname, NULL, 0, content_type)
4593                 );
4594         }
4595         /* Now write the data */
4596         CtdlSubmitMsg(msg, NULL, roomname, 0);
4597         CtdlFreeMessage(msg);
4598 }
4599
4600
4601
4602
4603
4604
4605 void CtdlGetSysConfigBackend(long msgnum, void *userdata) {
4606         config_msgnum = msgnum;
4607 }
4608
4609
4610 char *CtdlGetSysConfig(char *sysconfname) {
4611         char hold_rm[ROOMNAMELEN];
4612         long msgnum;
4613         char *conf;
4614         struct CtdlMessage *msg;
4615         char buf[SIZ];
4616
4617         strcpy(hold_rm, CC->room.QRname);
4618         if (getroom(&CC->room, SYSCONFIGROOM) != 0) {
4619                 getroom(&CC->room, hold_rm);
4620                 return NULL;
4621         }
4622
4623
4624         /* We want the last (and probably only) config in this room */
4625         begin_critical_section(S_CONFIG);
4626         config_msgnum = (-1L);
4627         CtdlForEachMessage(MSGS_LAST, 1, NULL, sysconfname, NULL,
4628                 CtdlGetSysConfigBackend, NULL);
4629         msgnum = config_msgnum;
4630         end_critical_section(S_CONFIG);
4631
4632         if (msgnum < 0L) {
4633                 conf = NULL;
4634         }
4635         else {
4636                 msg = CtdlFetchMessage(msgnum, 1);
4637                 if (msg != NULL) {
4638                         conf = strdup(msg->cm_fields['M']);
4639                         CtdlFreeMessage(msg);
4640                 }
4641                 else {
4642                         conf = NULL;
4643                 }
4644         }
4645
4646         getroom(&CC->room, hold_rm);
4647
4648         if (conf != NULL) do {
4649                 extract_token(buf, conf, 0, '\n', sizeof buf);
4650                 strcpy(conf, &conf[strlen(buf)+1]);
4651         } while ( (!IsEmptyStr(conf)) && (!IsEmptyStr(buf)) );
4652
4653         return(conf);
4654 }
4655
4656
4657 void CtdlPutSysConfig(char *sysconfname, char *sysconfdata) {
4658         CtdlWriteObject(SYSCONFIGROOM, sysconfname, sysconfdata, (strlen(sysconfdata)+1), NULL, 0, 1, 0);
4659 }
4660
4661
4662 /*
4663  * Determine whether a given Internet address belongs to the current user
4664  */
4665 int CtdlIsMe(char *addr, int addr_buf_len)
4666 {
4667         struct recptypes *recp;
4668         int i;
4669
4670         recp = validate_recipients(addr, NULL, 0);
4671         if (recp == NULL) return(0);
4672
4673         if (recp->num_local == 0) {
4674                 free_recipients(recp);
4675                 return(0);
4676         }
4677
4678         for (i=0; i<recp->num_local; ++i) {
4679                 extract_token(addr, recp->recp_local, i, '|', addr_buf_len);
4680                 if (!strcasecmp(addr, CC->user.fullname)) {
4681                         free_recipients(recp);
4682                         return(1);
4683                 }
4684         }
4685
4686         free_recipients(recp);
4687         return(0);
4688 }
4689
4690
4691 /*
4692  * Citadel protocol command to do the same
4693  */
4694 void cmd_isme(char *argbuf) {
4695         char addr[256];
4696
4697         if (CtdlAccessCheck(ac_logged_in)) return;
4698         extract_token(addr, argbuf, 0, '|', sizeof addr);
4699
4700         if (CtdlIsMe(addr, sizeof addr)) {
4701                 cprintf("%d %s\n", CIT_OK, addr);
4702         }
4703         else {
4704                 cprintf("%d Not you.\n", ERROR + ILLEGAL_VALUE);
4705         }
4706
4707 }
4708
4709
4710 /*****************************************************************************/
4711 /*                      MODULE INITIALIZATION STUFF                          */
4712 /*****************************************************************************/
4713
4714 CTDL_MODULE_INIT(msgbase)
4715 {
4716         CtdlRegisterProtoHook(cmd_msgs, "MSGS", "Output a list of messages in the current room");
4717         CtdlRegisterProtoHook(cmd_msg0, "MSG0", "Output a message in plain text format");
4718         CtdlRegisterProtoHook(cmd_msg2, "MSG2", "Output a message in RFC822 format");
4719         CtdlRegisterProtoHook(cmd_msg3, "MSG3", "Output a message in raw format (deprecated)");
4720         CtdlRegisterProtoHook(cmd_msg4, "MSG4", "Output a message in the client's preferred format");
4721         CtdlRegisterProtoHook(cmd_msgp, "MSGP", "Select preferred format for MSG4 output");
4722         CtdlRegisterProtoHook(cmd_opna, "OPNA", "Open an attachment for download");
4723         CtdlRegisterProtoHook(cmd_dlat, "DLAT", "Download an attachment");
4724         CtdlRegisterProtoHook(cmd_ent0, "ENT0", "Enter a message");
4725         CtdlRegisterProtoHook(cmd_dele, "DELE", "Delete a message");
4726         CtdlRegisterProtoHook(cmd_move, "MOVE", "Move or copy a message to another room");
4727         CtdlRegisterProtoHook(cmd_isme, "ISME", "Determine whether an email address belongs to a user");
4728
4729         /* return our Subversion id for the Log */
4730         return "$Id$";
4731 }