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
 357         /* Don't bother doing *anything* if we were passed a list of zero messages */
 358         if (num_target_msgnums < 1) {
 359                 return;
 360         }
 361
 362         /* If no room was specified, we go with the current room. */
 363         if (!which_room) {
 364                 which_room = &CC->room;
 365         }
 366
 367         /* If no user was specified, we go with the current user. */
 368         if (!which_user) {
 369                 which_user = &CC->user;
 370         }
 371
 372         CtdlLogPrintf(CTDL_DEBUG, "CtdlSetSeen(%d msgs starting with %ld, %s, %d) in <%s>\n",
 373                 num_target_msgnums, target_msgnums[0],
 374                 (target_setting ? "SET" : "CLEAR"),
 375                 which_set,
 376                 which_room->QRname);
 377
 378         /* Learn about the user and room in question */
 379         CtdlGetRelationship(&vbuf, which_user, which_room);
 380
 381         /* Load the message list */
 382         cdbfr = cdb_fetch(CDB_MSGLISTS, &which_room->QRnumber, sizeof(long));
 383         if (cdbfr != NULL) {
 384                 msglist = (long *) cdbfr->ptr;
 385                 cdbfr->ptr = NULL;      /* CtdlSetSeen() now owns this memory */
 386                 num_msgs = cdbfr->len / sizeof(long);
 387                 cdb_free(cdbfr);
 388         } else {
 389                 return; /* No messages at all?  No further action. */
 390         }
 391
 392         is_set = malloc(num_msgs * sizeof(char));
 393         memset(is_set, 0, (num_msgs * sizeof(char)) );
 394
 395         /* Decide which message set we're manipulating */
 396         switch(which_set) {
 397         case ctdlsetseen_seen:
 398                 vset = NewStrBufPlain(vbuf.v_seen, -1);
 399                 break;
 400         case ctdlsetseen_answered:
 401                 vset = NewStrBufPlain(vbuf.v_answered, -1);
 402                 break;
 403         default:
 404                 vset = NewStrBuf();
 405         }
 406
 407
 408 #if 0   /* This is a special diagnostic section.  Do not allow it to run during normal operation. */
 409         CtdlLogPrintf(CTDL_DEBUG, "There are %d messages in the room.\n", num_msgs);
 410         for (i=0; i<num_msgs; ++i) {
 411                 if ((i > 0) && (msglist[i] <= msglist[i-1])) abort();
 412         }
 413         CtdlLogPrintf(CTDL_DEBUG, "We are twiddling %d of them.\n", num_target_msgnums);
 414         for (k=0; k<num_target_msgnums; ++k) {
 415                 if ((k > 0) && (target_msgnums[k] <= target_msgnums[k-1])) abort();
 416         }
 417 #endif
 418
 419         CtdlLogPrintf(CTDL_DEBUG, "before update: %s\n", ChrPtr(vset));
 420
 421         /* Translate the existing sequence set into an array of booleans */
 422         setstr = NewStrBuf();
 423         lostr = NewStrBuf();
 424         histr = NewStrBuf();
 425         pvset = NULL;
 426         while (StrBufExtract_NextToken(setstr, vset, &pvset, ',') >= 0) {
 427
 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                 if ((was_seen == 0) && (is_seen == 1)) {
 472                         lo = msglist[i];
 473                 }
 474                 else if ((was_seen == 1) && (is_seen == 0)) {
 475                         hi = msglist[i-1];
 476
 477                         if (StrLength(vset) > 0) {
 478                                 StrBufAppendBufPlain(vset, HKEY(","), 0);
 479                         }
 480                         if (lo == hi) {
 481                                 StrBufAppendPrintf(vset, "%ld", hi);
 482                         }
 483                         else {
 484                                 StrBufAppendPrintf(vset, "%ld:%ld", lo, hi);
 485                         }
 486                 }
 487
 488                 if ((is_seen) && (i == num_msgs - 1)) {
 489                         if (StrLength(vset) > 0) {
 490                                 StrBufAppendBufPlain(vset, HKEY(","), 0);
 491                         }
 492                         if ((i==0) || (was_seen == 0)) {
 493                                 StrBufAppendPrintf(vset, "%ld", msglist[i]);
 494                         }
 495                         else {
 496                                 StrBufAppendPrintf(vset, "%ld:%ld", lo, msglist[i]);
 497                         }
 498                 }
 499
 500                 was_seen = is_seen;
 501         }
 502
 503         /*
 504          * We will have to stuff this string back into a 4096 byte buffer, so if it's
 505          * larger than that now, truncate it by removing tokens from the beginning.
 506          * The limit of 100 iterations is there to prevent an infinite loop in case
 507          * something unexpected happens.
 508          */
 509         int number_of_truncations = 0;
 510         while ( (StrLength(vset) > SIZ) && (number_of_truncations < 100) ) {
 511                 StrBufRemove_token(vset, 0, ',');
 512                 ++number_of_truncations;
 513         }
 514
 515         /*
 516          * If we're truncating the sequence set of messages marked with the 'seen' flag,
 517          * we want the earliest messages (the truncated ones) to be marked, not unmarked.
 518          * Otherwise messages at the beginning will suddenly appear to be 'unseen'.
 519          */
 520         if ( (which_set == ctdlsetseen_seen) && (number_of_truncations > 0) ) {
 521                 StrBuf *first_tok;
 522                 first_tok = NewStrBuf();
 523                 StrBufExtract_token(first_tok, vset, 0, ',');
 524                 StrBufRemove_token(vset, 0, ',');
 525
 526                 if (StrBufNum_tokens(first_tok, ':') > 1) {
 527                         StrBufRemove_token(first_tok, 0, ':');
 528                 }
 529
 530                 StrBuf *new_set;
 531                 new_set = NewStrBuf();
 532                 StrBufAppendBufPlain(new_set, HKEY("1:"), 0);
 533                 StrBufAppendBuf(new_set, first_tok, 0);
 534                 StrBufAppendBufPlain(new_set, HKEY(":"), 0);
 535                 StrBufAppendBuf(new_set, vset, 0);
 536
 537                 FreeStrBuf(&vset);
 538                 FreeStrBuf(&first_tok);
 539                 vset = new_set;
 540         }
 541
 542         CtdlLogPrintf(CTDL_DEBUG, " after update: %s\n", ChrPtr(vset));
 543
 544         /* Decide which message set we're manipulating */
 545         switch (which_set) {
 546                 case ctdlsetseen_seen:
 547                         safestrncpy(vbuf.v_seen, ChrPtr(vset), sizeof vbuf.v_seen);
 548                         break;
 549                 case ctdlsetseen_answered:
 550                         safestrncpy(vbuf.v_answered, ChrPtr(vset), sizeof vbuf.v_answered);
 551                         break;
 552         }
 553
 554         free(is_set);
 555         free(msglist);
 556         CtdlSetRelationship(&vbuf, which_user, which_room);
 557         FreeStrBuf(&vset);
 558 }
 559
 560
 561 /*
 562  * API function to perform an operation for each qualifying message in the
 563  * current room.  (Returns the number of messages processed.)
 564  */
 565 int CtdlForEachMessage(int mode,
 566                         long ref,
 567                         char *search_string,
 568                         char *content_type,
 569                         struct CtdlMessage *compare,
 570                         void (*CallBack) (long, void *),
 571                         void *userdata)
 572 {
 573
 574         int a, i, j;
 575         struct visit vbuf;
 576         struct cdbdata *cdbfr;
 577         long *msglist = NULL;
 578         int num_msgs = 0;
 579         int num_processed = 0;
 580         long thismsg;
 581         struct MetaData smi;
 582         struct CtdlMessage *msg = NULL;
 583         int is_seen = 0;
 584         long lastold = 0L;
 585         int printed_lastold = 0;
 586         int num_search_msgs = 0;
 587         long *search_msgs = NULL;
 588         regex_t re;
 589         int need_to_free_re = 0;
 590         regmatch_t pm;
 591
 592         if ((content_type) && (!IsEmptyStr(content_type))) {
 593                 regcomp(&re, content_type, 0);
 594                 need_to_free_re = 1;
 595         }
 596
 597         /* Learn about the user and room in question */
 598         getuser(&CC->user, CC->curr_user);
 599         CtdlGetRelationship(&vbuf, &CC->user, &CC->room);
 600
 601         /* Load the message list */
 602         cdbfr = cdb_fetch(CDB_MSGLISTS, &CC->room.QRnumber, sizeof(long));
 603         if (cdbfr != NULL) {
 604                 msglist = (long *) cdbfr->ptr;
 605                 num_msgs = cdbfr->len / sizeof(long);
 606         } else {
 607                 if (need_to_free_re) regfree(&re);
 608                 return 0;       /* No messages at all?  No further action. */
 609         }
 610
 611
 612         /*
 613          * Now begin the traversal.
 614          */
 615         if (num_msgs > 0) for (a = 0; a < num_msgs; ++a) {
 616
 617                 /* If the caller is looking for a specific MIME type, filter
 618                  * out all messages which are not of the type requested.
 619                  */
 620                 if ((content_type != NULL) && (!IsEmptyStr(content_type))) {
 621
 622                         /* This call to GetMetaData() sits inside this loop
 623                          * so that we only do the extra database read per msg
 624                          * if we need to.  Doing the extra read all the time
 625                          * really kills the server.  If we ever need to use
 626                          * metadata for another search criterion, we need to
 627                          * move the read somewhere else -- but still be smart
 628                          * enough to only do the read if the caller has
 629                          * specified something that will need it.
 630                          */
 631                         GetMetaData(&smi, msglist[a]);
 632
 633                         /* if (strcasecmp(smi.meta_content_type, content_type)) { old non-regex way */
 634                         if (regexec(&re, smi.meta_content_type, 1, &pm, 0) != 0) {
 635                                 msglist[a] = 0L;
 636                         }
 637                 }
 638         }
 639
 640         num_msgs = sort_msglist(msglist, num_msgs);
 641
 642         /* If a template was supplied, filter out the messages which
 643          * don't match.  (This could induce some delays!)
 644          */
 645         if (num_msgs > 0) {
 646                 if (compare != NULL) {
 647                         for (a = 0; a < num_msgs; ++a) {
 648                                 msg = CtdlFetchMessage(msglist[a], 1);
 649                                 if (msg != NULL) {
 650                                         if (CtdlMsgCmp(msg, compare)) {
 651                                                 msglist[a] = 0L;
 652                                         }
 653                                         CtdlFreeMessage(msg);
 654                                 }
 655                         }
 656                 }
 657         }
 658
 659         /* If an EUID was specified, throw away all messages except the correct one. */
 660         if (mode == MSGS_EUID) {
 661                 long correct_msgnum;
 662                 int found_match = 0;
 663
 664                 if ((num_msgs > 0) && (search_string) ) {
 665                         correct_msgnum = locate_message_by_euid(search_string, &CC->room);
 666                         if ( (num_msgs > 0) && (correct_msgnum >= 0L) ) {
 667                                 for (i=0; i<num_msgs; ++i) {
 668                                         if (msglist[i] == correct_msgnum) {
 669                                                 found_match = 1;
 670                                         }
 671                                 }
 672                         }
 673                 }
 674                 if (found_match) {
 675                         msglist[0] = correct_msgnum;
 676                         num_msgs = 1;
 677                 } else {
 678                         num_msgs = 0;   /* didn't find the right one ... dump the rest */
 679                 }
 680                 mode = MSGS_ALL;        /* treat it like 'read all' from now on */
 681         }
 682
 683         /* If a search string was specified, get a message list from
 684          * the full text index and remove messages which aren't on both
 685          * lists.
 686          *
 687          * How this works:
 688          * Since the lists are sorted and strictly ascending, and the
 689          * output list is guaranteed to be shorter than or equal to the
 690          * input list, we overwrite the bottom of the input list.  This
 691          * eliminates the need to memmove big chunks of the list over and
 692          * over again.
 693          */
 694         if ( (num_msgs > 0) && (mode == MSGS_SEARCH) && (search_string) ) {
 695
 696                 /* Call search module via hook mechanism.
 697                  * NULL means use any search function available.
 698                  * otherwise replace with a char * to name of search routine
 699                  */
 700                 CtdlModuleDoSearch(&num_search_msgs, &search_msgs, search_string, "fulltext");
 701
 702                 if (num_search_msgs > 0) {
 703
 704                         int orig_num_msgs;
 705
 706                         orig_num_msgs = num_msgs;
 707                         num_msgs = 0;
 708                         for (i=0; i<orig_num_msgs; ++i) {
 709                                 for (j=0; j<num_search_msgs; ++j) {
 710                                         if (msglist[i] == search_msgs[j]) {
 711                                                 msglist[num_msgs++] = msglist[i];
 712                                         }
 713                                 }
 714                         }
 715                 }
 716                 else {
 717                         num_msgs = 0;   /* No messages qualify */
 718                 }
 719                 if (search_msgs != NULL) free(search_msgs);
 720
 721                 /* Now that we've purged messages which don't contain the search
 722                  * string, treat a MSGS_SEARCH just like a MSGS_ALL from this
 723                  * point on.
 724                  */
 725                 mode = MSGS_ALL;
 726         }
 727
 728         /*
 729          * Now iterate through the message list, according to the
 730          * criteria supplied by the caller.
 731          */
 732         if (num_msgs > 0)
 733                 for (a = 0; a < num_msgs; ++a) {
 734                         thismsg = msglist[a];
 735                         if (mode == MSGS_ALL) {
 736                                 is_seen = 0;
 737                         }
 738                         else {
 739                                 is_seen = is_msg_in_sequence_set(
 740                                                         vbuf.v_seen, thismsg);
 741                                 if (is_seen) lastold = thismsg;
 742                         }
 743                         if ((thismsg > 0L)
 744                             && (
 745
 746                                        (mode == MSGS_ALL)
 747                                        || ((mode == MSGS_OLD) && (is_seen))
 748                                        || ((mode == MSGS_NEW) && (!is_seen))
 749                                        || ((mode == MSGS_LAST) && (a >= (num_msgs - ref)))
 750                                    || ((mode == MSGS_FIRST) && (a < ref))
 751                                 || ((mode == MSGS_GT) && (thismsg > ref))
 752                                 || ((mode == MSGS_EQ) && (thismsg == ref))
 753                             )
 754                             ) {
 755                                 if ((mode == MSGS_NEW) && (CC->user.flags & US_LASTOLD) && (lastold > 0L) && (printed_lastold == 0) && (!is_seen)) {
 756                                         if (CallBack)
 757                                                 CallBack(lastold, userdata);
 758                                         printed_lastold = 1;
 759                                         ++num_processed;
 760                                 }
 761                                 if (CallBack) CallBack(thismsg, userdata);
 762                                 ++num_processed;
 763                         }
 764                 }
 765         cdb_free(cdbfr);        /* Clean up */
 766         if (need_to_free_re) regfree(&re);
 767         return num_processed;
 768 }
 769
 770
 771
 772 /*
 773  * cmd_msgs()  -  get list of message #'s in this room
 774  *              implements the MSGS server command using CtdlForEachMessage()
 775  */
 776 void cmd_msgs(char *cmdbuf)
 777 {
 778         int mode = 0;
 779         char which[16];
 780         char buf[256];
 781         char tfield[256];
 782         char tvalue[256];
 783         int cm_ref = 0;
 784         int i;
 785         int with_template = 0;
 786         struct CtdlMessage *template = NULL;
 787         int with_headers = 0;
 788         char search_string[1024];
 789
 790         extract_token(which, cmdbuf, 0, '|', sizeof which);
 791         cm_ref = extract_int(cmdbuf, 1);
 792         extract_token(search_string, cmdbuf, 1, '|', sizeof search_string);
 793         with_template = extract_int(cmdbuf, 2);
 794         with_headers = extract_int(cmdbuf, 3);
 795
 796         strcat(which, "   ");
 797         if (!strncasecmp(which, "OLD", 3))
 798                 mode = MSGS_OLD;
 799         else if (!strncasecmp(which, "NEW", 3))
 800                 mode = MSGS_NEW;
 801         else if (!strncasecmp(which, "FIRST", 5))
 802                 mode = MSGS_FIRST;
 803         else if (!strncasecmp(which, "LAST", 4))
 804                 mode = MSGS_LAST;
 805         else if (!strncasecmp(which, "GT", 2))
 806                 mode = MSGS_GT;
 807         else if (!strncasecmp(which, "SEARCH", 6))
 808                 mode = MSGS_SEARCH;
 809         else if (!strncasecmp(which, "EUID", 4))
 810                 mode = MSGS_EUID;
 811         else
 812                 mode = MSGS_ALL;
 813
 814         if ((!(CC->logged_in)) && (!(CC->internal_pgm))) {
 815                 cprintf("%d not logged in\n", ERROR + NOT_LOGGED_IN);
 816                 return;
 817         }
 818
 819         if ( (mode == MSGS_SEARCH) && (!config.c_enable_fulltext) ) {
 820                 cprintf("%d Full text index is not enabled on this server.\n",
 821                         ERROR + CMD_NOT_SUPPORTED);
 822                 return;
 823         }
 824
 825         if (with_template) {
 826                 unbuffer_output();
 827                 cprintf("%d Send template then receive message list\n",
 828                         START_CHAT_MODE);
 829                 template = (struct CtdlMessage *)
 830                         malloc(sizeof(struct CtdlMessage));
 831                 memset(template, 0, sizeof(struct CtdlMessage));
 832                 template->cm_magic = CTDLMESSAGE_MAGIC;
 833                 template->cm_anon_type = MES_NORMAL;
 834
 835                 while(client_getln(buf, sizeof buf) >= 0 && strcmp(buf,"000")) {
 836                         extract_token(tfield, buf, 0, '|', sizeof tfield);
 837                         extract_token(tvalue, buf, 1, '|', sizeof tvalue);
 838                         for (i='A'; i<='Z'; ++i) if (msgkeys[i]!=NULL) {
 839                                 if (!strcasecmp(tfield, msgkeys[i])) {
 840                                         template->cm_fields[i] =
 841                                                 strdup(tvalue);
 842                                 }
 843                         }
 844                 }
 845                 buffer_output();
 846         }
 847         else {
 848                 cprintf("%d  \n", LISTING_FOLLOWS);
 849         }
 850
 851         CtdlForEachMessage(mode,
 852                         ( (mode == MSGS_SEARCH) ? 0 : cm_ref ),
 853                         ( ((mode == MSGS_SEARCH)||(mode == MSGS_EUID)) ? search_string : NULL ),
 854                         NULL,
 855                         template,
 856                         (with_headers ? headers_listing : simple_listing),
 857                         NULL
 858         );
 859         if (template != NULL) CtdlFreeMessage(template);
 860         cprintf("000\n");
 861 }
 862
 863
 864
 865
 866 /*
 867  * help_subst()  -  support routine for help file viewer
 868  */
 869 void help_subst(char *strbuf, char *source, char *dest)
 870 {
 871         char workbuf[SIZ];
 872         int p;
 873
 874         while (p = pattern2(strbuf, source), (p >= 0)) {
 875                 strcpy(workbuf, &strbuf[p + strlen(source)]);
 876                 strcpy(&strbuf[p], dest);
 877                 strcat(strbuf, workbuf);
 878         }
 879 }
 880
 881
 882 void do_help_subst(char *buffer)
 883 {
 884         char buf2[16];
 885
 886         help_subst(buffer, "^nodename", config.c_nodename);
 887         help_subst(buffer, "^humannode", config.c_humannode);
 888         help_subst(buffer, "^fqdn", config.c_fqdn);
 889         help_subst(buffer, "^username", CC->user.fullname);
 890         snprintf(buf2, sizeof buf2, "%ld", CC->user.usernum);
 891         help_subst(buffer, "^usernum", buf2);
 892         help_subst(buffer, "^sysadm", config.c_sysadm);
 893         help_subst(buffer, "^variantname", CITADEL);
 894         snprintf(buf2, sizeof buf2, "%d", config.c_maxsessions);
 895         help_subst(buffer, "^maxsessions", buf2);
 896         help_subst(buffer, "^bbsdir", ctdl_message_dir);
 897 }
 898
 899
 900
 901 /*
 902  * memfmout()  -  Citadel text formatter and paginator.
 903  *           Although the original purpose of this routine was to format
 904  *           text to the reader's screen width, all we're really using it
 905  *           for here is to format text out to 80 columns before sending it
 906  *           to the client.  The client software may reformat it again.
 907  */
 908 void memfmout(
 909         char *mptr,             /* where are we going to get our text from? */
 910         char subst,             /* nonzero if we should do substitutions */
 911         char *nl)               /* string to terminate lines with */
 912 {
 913         int a, b, c;
 914         int real = 0;
 915         int old = 0;
 916         cit_uint8_t ch;
 917         char aaa[140];
 918         char buffer[SIZ];
 919         static int width = 80;
 920
 921         strcpy(aaa, "");
 922         old = 255;
 923         strcpy(buffer, "");
 924         c = 1;                  /* c is the current pos */
 925
 926         do {
 927                 if (subst) {
 928                         while (ch = *mptr, ((ch != 0) && (strlen(buffer) < 126))) {
 929                                 ch = *mptr++;
 930                                 buffer[strlen(buffer) + 1] = 0;
 931                                 buffer[strlen(buffer)] = ch;
 932                         }
 933
 934                         if (buffer[0] == '^')
 935                                 do_help_subst(buffer);
 936
 937                         buffer[strlen(buffer) + 1] = 0;
 938                         a = buffer[0];
 939                         strcpy(buffer, &buffer[1]);
 940                 } else {
 941                         ch = *mptr++;
 942                 }
 943
 944                 old = real;
 945                 real = ch;
 946
 947                 if (((ch == 13) || (ch == 10)) && (old != 13) && (old != 10)) {
 948                         ch = 32;
 949                 }
 950                 if (((old == 13) || (old == 10)) && (isspace(real))) {
 951                         cprintf("%s", nl);
 952                         c = 1;
 953                 }
 954                 if (ch > 32) {
 955                         if (((strlen(aaa) + c) > (width - 5)) && (strlen(aaa) > (width - 5))) {
 956                                 cprintf("%s%s", nl, aaa);
 957                                 c = strlen(aaa);
 958                                 aaa[0] = 0;
 959                         }
 960                         b = strlen(aaa);
 961                         aaa[b] = ch;
 962                         aaa[b + 1] = 0;
 963                 }
 964                 if (ch == 32) {
 965                         if ((strlen(aaa) + c) > (width - 5)) {
 966                                 cprintf("%s", nl);
 967                                 c = 1;
 968                         }
 969                         cprintf("%s ", aaa);
 970                         ++c;
 971                         c = c + strlen(aaa);
 972                         strcpy(aaa, "");
 973                 }
 974                 if ((ch == 13) || (ch == 10)) {
 975                         cprintf("%s%s", aaa, nl);
 976                         c = 1;
 977                         strcpy(aaa, "");
 978                 }
 979
 980         } while (ch > 0);
 981
 982         cprintf("%s%s", aaa, nl);
 983 }
 984
 985
 986
 987 /*
 988  * Callback function for mime parser that simply lists the part
 989  */
 990 void list_this_part(char *name, char *filename, char *partnum, char *disp,
 991                     void *content, char *cbtype, char *cbcharset, size_t length, char *encoding,
 992                     char *cbid, void *cbuserdata)
 993 {
 994         struct ma_info *ma;
 995
 996         ma = (struct ma_info *)cbuserdata;
 997         if (ma->is_ma == 0) {
 998                 cprintf("part=%s|%s|%s|%s|%s|%ld|%s\n",
 999                         name, filename, partnum, disp, cbtype, (long)length, cbid);
1000         }
1001 }
1002
1003 /*
1004  * Callback function for multipart prefix
1005  */
1006 void list_this_pref(char *name, char *filename, char *partnum, char *disp,
1007                     void *content, char *cbtype, char *cbcharset, size_t length, char *encoding,
1008                     char *cbid, void *cbuserdata)
1009 {
1010         struct ma_info *ma;
1011
1012         ma = (struct ma_info *)cbuserdata;
1013         if (!strcasecmp(cbtype, "multipart/alternative")) {
1014                 ++ma->is_ma;
1015         }
1016
1017         if (ma->is_ma == 0) {
1018                 cprintf("pref=%s|%s\n", partnum, cbtype);
1019         }
1020 }
1021
1022 /*
1023  * Callback function for multipart sufffix
1024  */
1025 void list_this_suff(char *name, char *filename, char *partnum, char *disp,
1026                     void *content, char *cbtype, char *cbcharset, size_t length, char *encoding,
1027                     char *cbid, void *cbuserdata)
1028 {
1029         struct ma_info *ma;
1030
1031         ma = (struct ma_info *)cbuserdata;
1032         if (ma->is_ma == 0) {
1033                 cprintf("suff=%s|%s\n", partnum, cbtype);
1034         }
1035         if (!strcasecmp(cbtype, "multipart/alternative")) {
1036                 --ma->is_ma;
1037         }
1038 }
1039
1040
1041 /*
1042  * Callback function for mime parser that opens a section for downloading
1043  */
1044 void mime_download(char *name, char *filename, char *partnum, char *disp,
1045                    void *content, char *cbtype, char *cbcharset, size_t length,
1046                    char *encoding, char *cbid, void *cbuserdata)
1047 {
1048         int rv = 0;
1049
1050         /* Silently go away if there's already a download open. */
1051         if (CC->download_fp != NULL)
1052                 return;
1053
1054         if (
1055                 (!IsEmptyStr(partnum) && (!strcasecmp(CC->download_desired_section, partnum)))
1056         ||      (!IsEmptyStr(cbid) && (!strcasecmp(CC->download_desired_section, cbid)))
1057         ) {
1058                 CC->download_fp = tmpfile();
1059                 if (CC->download_fp == NULL)
1060                         return;
1061
1062                 rv = fwrite(content, length, 1, CC->download_fp);
1063                 fflush(CC->download_fp);
1064                 rewind(CC->download_fp);
1065
1066                 OpenCmdResult(filename, cbtype);
1067         }
1068 }
1069
1070
1071
1072 /*
1073  * Callback function for mime parser that outputs a section all at once.
1074  * We can specify the desired section by part number *or* content-id.
1075  */
1076 void mime_spew_section(char *name, char *filename, char *partnum, char *disp,
1077                    void *content, char *cbtype, char *cbcharset, size_t length,
1078                    char *encoding, char *cbid, void *cbuserdata)
1079 {
1080         int *found_it = (int *)cbuserdata;
1081
1082         if (
1083                 (!IsEmptyStr(partnum) && (!strcasecmp(CC->download_desired_section, partnum)))
1084         ||      (!IsEmptyStr(cbid) && (!strcasecmp(CC->download_desired_section, cbid)))
1085         ) {
1086                 *found_it = 1;
1087                 cprintf("%d %d|-1|%s|%s\n",
1088                         BINARY_FOLLOWS,
1089                         (int)length,
1090                         filename,
1091                         cbtype
1092                 );
1093                 client_write(content, length);
1094         }
1095 }
1096
1097
1098
1099 /*
1100  * Load a message from disk into memory.
1101  * This is used by CtdlOutputMsg() and other fetch functions.
1102  *
1103  * NOTE: Caller is responsible for freeing the returned CtdlMessage struct
1104  *       using the CtdlMessageFree() function.
1105  */
1106 struct CtdlMessage *CtdlFetchMessage(long msgnum, int with_body)
1107 {
1108         struct cdbdata *dmsgtext;
1109         struct CtdlMessage *ret = NULL;
1110         char *mptr;
1111         char *upper_bound;
1112         cit_uint8_t ch;
1113         cit_uint8_t field_header;
1114
1115         CtdlLogPrintf(CTDL_DEBUG, "CtdlFetchMessage(%ld, %d)\n", msgnum, with_body);
1116
1117         dmsgtext = cdb_fetch(CDB_MSGMAIN, &msgnum, sizeof(long));
1118         if (dmsgtext == NULL) {
1119                 return NULL;
1120         }
1121         mptr = dmsgtext->ptr;
1122         upper_bound = mptr + dmsgtext->len;
1123
1124         /* Parse the three bytes that begin EVERY message on disk.
1125          * The first is always 0xFF, the on-disk magic number.
1126          * The second is the anonymous/public type byte.
1127          * The third is the format type byte (vari, fixed, or MIME).
1128          */
1129         ch = *mptr++;
1130         if (ch != 255) {
1131                 CtdlLogPrintf(CTDL_ERR, "Message %ld appears to be corrupted.\n", msgnum);
1132                 cdb_free(dmsgtext);
1133                 return NULL;
1134         }
1135         ret = (struct CtdlMessage *) malloc(sizeof(struct CtdlMessage));
1136         memset(ret, 0, sizeof(struct CtdlMessage));
1137
1138         ret->cm_magic = CTDLMESSAGE_MAGIC;
1139         ret->cm_anon_type = *mptr++;    /* Anon type byte */
1140         ret->cm_format_type = *mptr++;  /* Format type byte */
1141
1142         /*
1143          * The rest is zero or more arbitrary fields.  Load them in.
1144          * We're done when we encounter either a zero-length field or
1145          * have just processed the 'M' (message text) field.
1146          */
1147         do {
1148                 if (mptr >= upper_bound) {
1149                         break;
1150                 }
1151                 field_header = *mptr++;
1152                 ret->cm_fields[field_header] = strdup(mptr);
1153
1154                 while (*mptr++ != 0);   /* advance to next field */
1155
1156         } while ((mptr < upper_bound) && (field_header != 'M'));
1157
1158         cdb_free(dmsgtext);
1159
1160         /* Always make sure there's something in the msg text field.  If
1161          * it's NULL, the message text is most likely stored separately,
1162          * so go ahead and fetch that.  Failing that, just set a dummy
1163          * body so other code doesn't barf.
1164          */
1165         if ( (ret->cm_fields['M'] == NULL) && (with_body) ) {
1166                 dmsgtext = cdb_fetch(CDB_BIGMSGS, &msgnum, sizeof(long));
1167                 if (dmsgtext != NULL) {
1168                         ret->cm_fields['M'] = strdup(dmsgtext->ptr);
1169                         cdb_free(dmsgtext);
1170                 }
1171         }
1172         if (ret->cm_fields['M'] == NULL) {
1173                 ret->cm_fields['M'] = strdup("\r\n\r\n (no text)\r\n");
1174         }
1175
1176         /* Perform "before read" hooks (aborting if any return nonzero) */
1177         if (PerformMessageHooks(ret, EVT_BEFOREREAD) > 0) {
1178                 CtdlFreeMessage(ret);
1179                 return NULL;
1180         }
1181
1182         return (ret);
1183 }
1184
1185
1186 /*
1187  * Returns 1 if the supplied pointer points to a valid Citadel message.
1188  * If the pointer is NULL or the magic number check fails, returns 0.
1189  */
1190 int is_valid_message(struct CtdlMessage *msg) {
1191         if (msg == NULL)
1192                 return 0;
1193         if ((msg->cm_magic) != CTDLMESSAGE_MAGIC) {
1194                 CtdlLogPrintf(CTDL_WARNING, "is_valid_message() -- self-check failed\n");
1195                 return 0;
1196         }
1197         return 1;
1198 }
1199
1200
1201 /*
1202  * 'Destructor' for struct CtdlMessage
1203  */
1204 void CtdlFreeMessage(struct CtdlMessage *msg)
1205 {
1206         int i;
1207
1208         if (is_valid_message(msg) == 0)
1209         {
1210                 if (msg != NULL) free (msg);
1211                 return;
1212         }
1213
1214         for (i = 0; i < 256; ++i)
1215                 if (msg->cm_fields[i] != NULL) {
1216                         free(msg->cm_fields[i]);
1217                 }
1218
1219         msg->cm_magic = 0;      /* just in case */
1220         free(msg);
1221 }
1222
1223
1224 /*
1225  * Pre callback function for multipart/alternative
1226  *
1227  * NOTE: this differs from the standard behavior for a reason.  Normally when
1228  *       displaying multipart/alternative you want to show the _last_ usable
1229  *       format in the message.  Here we show the _first_ one, because it's
1230  *       usually text/plain.  Since this set of functions is designed for text
1231  *       output to non-MIME-aware clients, this is the desired behavior.
1232  *
1233  */
1234 void fixed_output_pre(char *name, char *filename, char *partnum, char *disp,
1235                 void *content, char *cbtype, char *cbcharset, size_t length, char *encoding,
1236                 char *cbid, void *cbuserdata)
1237 {
1238         struct ma_info *ma;
1239
1240         ma = (struct ma_info *)cbuserdata;
1241         CtdlLogPrintf(CTDL_DEBUG, "fixed_output_pre() type=<%s>\n", cbtype);
1242         if (!strcasecmp(cbtype, "multipart/alternative")) {
1243                 ++ma->is_ma;
1244                 ma->did_print = 0;
1245         }
1246         if (!strcasecmp(cbtype, "message/rfc822")) {
1247                 ++ma->freeze;
1248         }
1249 }
1250
1251 /*
1252  * Post callback function for multipart/alternative
1253  */
1254 void fixed_output_post(char *name, char *filename, char *partnum, char *disp,
1255                 void *content, char *cbtype, char *cbcharset, size_t length,
1256                 char *encoding, char *cbid, void *cbuserdata)
1257 {
1258         struct ma_info *ma;
1259
1260         ma = (struct ma_info *)cbuserdata;
1261         CtdlLogPrintf(CTDL_DEBUG, "fixed_output_post() type=<%s>\n", cbtype);
1262         if (!strcasecmp(cbtype, "multipart/alternative")) {
1263                 --ma->is_ma;
1264                 ma->did_print = 0;
1265         }
1266         if (!strcasecmp(cbtype, "message/rfc822")) {
1267                 --ma->freeze;
1268         }
1269 }
1270
1271 /*
1272  * Inline callback function for mime parser that wants to display text
1273  */
1274 void fixed_output(char *name, char *filename, char *partnum, char *disp,
1275                 void *content, char *cbtype, char *cbcharset, size_t length,
1276                 char *encoding, char *cbid, void *cbuserdata)
1277 {
1278         char *ptr;
1279         char *wptr;
1280         size_t wlen;
1281         struct ma_info *ma;
1282
1283         ma = (struct ma_info *)cbuserdata;
1284
1285         CtdlLogPrintf(CTDL_DEBUG,
1286                 "fixed_output() part %s: %s (%s) (%ld bytes)\n",
1287                 partnum, filename, cbtype, (long)length);
1288
1289         /*
1290          * If we're in the middle of a multipart/alternative scope and
1291          * we've already printed another section, skip this one.
1292          */
1293         if ( (ma->is_ma) && (ma->did_print) ) {
1294                 CtdlLogPrintf(CTDL_DEBUG, "Skipping part %s (%s)\n", partnum, cbtype);
1295                 return;
1296         }
1297         ma->did_print = 1;
1298
1299         if ( (!strcasecmp(cbtype, "text/plain"))
1300            || (IsEmptyStr(cbtype)) ) {
1301                 wptr = content;
1302                 if (length > 0) {
1303                         client_write(wptr, length);
1304                         if (wptr[length-1] != '\n') {
1305                                 cprintf("\n");
1306                         }
1307                 }
1308                 return;
1309         }
1310
1311         if (!strcasecmp(cbtype, "text/html")) {
1312                 ptr = html_to_ascii(content, length, 80, 0);
1313                 wlen = strlen(ptr);
1314                 client_write(ptr, wlen);
1315                 if (ptr[wlen-1] != '\n') {
1316                         cprintf("\n");
1317                 }
1318                 free(ptr);
1319                 return;
1320         }
1321
1322         if (ma->use_fo_hooks) {
1323                 if (PerformFixedOutputHooks(cbtype, content, length)) {
1324                 /* above function returns nonzero if it handled the part */
1325                         return;
1326                 }
1327         }
1328
1329         if (strncasecmp(cbtype, "multipart/", 10)) {
1330                 cprintf("Part %s: %s (%s) (%ld bytes)\r\n",
1331                         partnum, filename, cbtype, (long)length);
1332                 return;
1333         }
1334 }
1335
1336 /*
1337  * The client is elegant and sophisticated and wants to be choosy about
1338  * MIME content types, so figure out which multipart/alternative part
1339  * we're going to send.
1340  *
1341  * We use a system of weights.  When we find a part that matches one of the
1342  * MIME types we've declared as preferential, we can store it in ma->chosen_part
1343  * and then set ma->chosen_pref to that MIME type's position in our preference
1344  * list.  If we then hit another match, we only replace the first match if
1345  * the preference value is lower.
1346  */
1347 void choose_preferred(char *name, char *filename, char *partnum, char *disp,
1348                 void *content, char *cbtype, char *cbcharset, size_t length,
1349                 char *encoding, char *cbid, void *cbuserdata)
1350 {
1351         char buf[1024];
1352         int i;
1353         struct ma_info *ma;
1354
1355         ma = (struct ma_info *)cbuserdata;
1356
1357         // NOTE: REMOVING THIS CONDITIONAL FIXES BUG 220
1358         //       http://bugzilla.citadel.org/show_bug.cgi?id=220
1359         // I don't know if there are any side effects!  Please TEST TEST TEST
1360         //if (ma->is_ma > 0) {
1361
1362         for (i=0; i<num_tokens(CC->preferred_formats, '|'); ++i) {
1363                 extract_token(buf, CC->preferred_formats, i, '|', sizeof buf);
1364                 if ( (!strcasecmp(buf, cbtype)) && (!ma->freeze) ) {
1365                         if (i < ma->chosen_pref) {
1366                                 CtdlLogPrintf(CTDL_DEBUG, "Setting chosen part: <%s>\n", partnum);
1367                                 safestrncpy(ma->chosen_part, partnum, sizeof ma->chosen_part);
1368                                 ma->chosen_pref = i;
1369                         }
1370                 }
1371         }
1372 }
1373
1374 /*
1375  * Now that we've chosen our preferred part, output it.
1376  */
1377 void output_preferred(char *name, char *filename, char *partnum, char *disp,
1378                 void *content, char *cbtype, char *cbcharset, size_t length,
1379                 char *encoding, char *cbid, void *cbuserdata)
1380 {
1381         int i;
1382         char buf[128];
1383         int add_newline = 0;
1384         char *text_content;
1385         struct ma_info *ma;
1386
1387         ma = (struct ma_info *)cbuserdata;
1388
1389         /* This is not the MIME part you're looking for... */
1390         if (strcasecmp(partnum, ma->chosen_part)) return;
1391
1392         /* If the content-type of this part is in our preferred formats
1393          * list, we can simply output it verbatim.
1394          */
1395         for (i=0; i<num_tokens(CC->preferred_formats, '|'); ++i) {
1396                 extract_token(buf, CC->preferred_formats, i, '|', sizeof buf);
1397                 if (!strcasecmp(buf, cbtype)) {
1398                         /* Yeah!  Go!  W00t!! */
1399
1400                         text_content = (char *)content;
1401                         if (text_content[length-1] != '\n') {
1402                                 ++add_newline;
1403                         }
1404                         cprintf("Content-type: %s", cbtype);
1405                         if (!IsEmptyStr(cbcharset)) {
1406                                 cprintf("; charset=%s", cbcharset);
1407                         }
1408                         cprintf("\nContent-length: %d\n",
1409                                 (int)(length + add_newline) );
1410                         if (!IsEmptyStr(encoding)) {
1411                                 cprintf("Content-transfer-encoding: %s\n", encoding);
1412                         }
1413                         else {
1414                                 cprintf("Content-transfer-encoding: 7bit\n");
1415                         }
1416                         cprintf("X-Citadel-MSG4-Partnum: %s\n", partnum);
1417                         cprintf("\n");
1418                         client_write(content, length);
1419                         if (add_newline) cprintf("\n");
1420                         return;
1421                 }
1422         }
1423
1424         /* No translations required or possible: output as text/plain */
1425         cprintf("Content-type: text/plain\n\n");
1426         fixed_output(name, filename, partnum, disp, content, cbtype, cbcharset,
1427                         length, encoding, cbid, cbuserdata);
1428 }
1429
1430
1431 struct encapmsg {
1432         char desired_section[64];
1433         char *msg;
1434         size_t msglen;
1435 };
1436
1437
1438 /*
1439  * Callback function for
1440  */
1441 void extract_encapsulated_message(char *name, char *filename, char *partnum, char *disp,
1442                    void *content, char *cbtype, char *cbcharset, size_t length,
1443                    char *encoding, char *cbid, void *cbuserdata)
1444 {
1445         struct encapmsg *encap;
1446
1447         encap = (struct encapmsg *)cbuserdata;
1448
1449         /* Only proceed if this is the desired section... */
1450         if (!strcasecmp(encap->desired_section, partnum)) {
1451                 encap->msglen = length;
1452                 encap->msg = malloc(length + 2);
1453                 memcpy(encap->msg, content, length);
1454                 return;
1455         }
1456
1457 }
1458
1459
1460
1461
1462 /*
1463  * Get a message off disk.  (returns om_* values found in msgbase.h)
1464  *
1465  */
1466 int CtdlOutputMsg(long msg_num,         /* message number (local) to fetch */
1467                   int mode,             /* how would you like that message? */
1468                   int headers_only,     /* eschew the message body? */
1469                   int do_proto,         /* do Citadel protocol responses? */
1470                   int crlf,             /* Use CRLF newlines instead of LF? */
1471                   char *section,        /* NULL or a message/rfc822 section */
1472                   int flags             /* should the bessage be exported clean? */
1473 ) {
1474         struct CtdlMessage *TheMessage = NULL;
1475         int retcode = om_no_such_msg;
1476         struct encapmsg encap;
1477
1478         CtdlLogPrintf(CTDL_DEBUG, "CtdlOutputMsg() msgnum=%ld, mode=%d, section=%s\n",
1479                 msg_num, mode,
1480                 (section ? section : "<>")
1481         );
1482
1483         if ((!(CC->logged_in)) && (!(CC->internal_pgm))) {
1484                 if (do_proto) cprintf("%d Not logged in.\n",
1485                         ERROR + NOT_LOGGED_IN);
1486                 return(om_not_logged_in);
1487         }
1488
1489         /* FIXME: check message id against msglist for this room */
1490
1491         /*
1492          * Fetch the message from disk.  If we're in HEADERS_FAST mode,
1493          * request that we don't even bother loading the body into memory.
1494          */
1495         if (headers_only == HEADERS_FAST) {
1496                 TheMessage = CtdlFetchMessage(msg_num, 0);
1497         }
1498         else {
1499                 TheMessage = CtdlFetchMessage(msg_num, 1);
1500         }
1501
1502         if (TheMessage == NULL) {
1503                 if (do_proto) cprintf("%d Can't locate msg %ld on disk\n",
1504                         ERROR + MESSAGE_NOT_FOUND, msg_num);
1505                 return(om_no_such_msg);
1506         }
1507
1508         /* Here is the weird form of this command, to process only an
1509          * encapsulated message/rfc822 section.
1510          */
1511         if (section) if (!IsEmptyStr(section)) if (strcmp(section, "0")) {
1512                 memset(&encap, 0, sizeof encap);
1513                 safestrncpy(encap.desired_section, section, sizeof encap.desired_section);
1514                 mime_parser(TheMessage->cm_fields['M'],
1515                         NULL,
1516                         *extract_encapsulated_message,
1517                         NULL, NULL, (void *)&encap, 0
1518                 );
1519                 CtdlFreeMessage(TheMessage);
1520                 TheMessage = NULL;
1521
1522                 if (encap.msg) {
1523                         encap.msg[encap.msglen] = 0;
1524                         TheMessage = convert_internet_message(encap.msg);
1525                         encap.msg = NULL;       /* no free() here, TheMessage owns it now */
1526
1527                         /* Now we let it fall through to the bottom of this
1528                          * function, because TheMessage now contains the
1529                          * encapsulated message instead of the top-level
1530                          * message.  Isn't that neat?
1531                          */
1532
1533                 }
1534                 else {
1535                         if (do_proto) cprintf("%d msg %ld has no part %s\n",
1536                                 ERROR + MESSAGE_NOT_FOUND, msg_num, section);
1537                         retcode = om_no_such_msg;
1538                 }
1539
1540         }
1541
1542         /* Ok, output the message now */
1543         retcode = CtdlOutputPreLoadedMsg(TheMessage, mode, headers_only, do_proto, crlf, flags);
1544         CtdlFreeMessage(TheMessage);
1545
1546         return(retcode);
1547 }
1548
1549
1550 char *qp_encode_email_addrs(char *source)
1551 {
1552         char user[256], node[256], name[256];
1553         const char headerStr[] = "=?UTF-8?Q?";
1554         char *Encoded;
1555         char *EncodedName;
1556         char *nPtr;
1557         int need_to_encode = 0;
1558         long SourceLen;
1559         long EncodedMaxLen;
1560         long nColons = 0;
1561         long *AddrPtr;
1562         long *AddrUtf8;
1563         long nAddrPtrMax = 50;
1564         long nmax;
1565         int InQuotes = 0;
1566         int i, n;
1567
1568         if (source == NULL) return source;
1569         if (IsEmptyStr(source)) return source;
1570
1571         AddrPtr = malloc (sizeof (long) * nAddrPtrMax);
1572         AddrUtf8 = malloc (sizeof (long) * nAddrPtrMax);
1573         memset(AddrUtf8, 0, sizeof (long) * nAddrPtrMax);
1574         *AddrPtr = 0;
1575         i = 0;
1576         while (!IsEmptyStr (&source[i])) {
1577                 if (nColons >= nAddrPtrMax){
1578                         long *ptr;
1579
1580                         ptr = (long *) malloc(sizeof (long) * nAddrPtrMax * 2);
1581                         memcpy (ptr, AddrPtr, sizeof (long) * nAddrPtrMax);
1582                         free (AddrPtr), AddrPtr = ptr;
1583
1584                         ptr = (long *) malloc(sizeof (long) * nAddrPtrMax * 2);
1585                         memset(&ptr[nAddrPtrMax], 0,
1586                                sizeof (long) * nAddrPtrMax);
1587
1588                         memcpy (ptr, AddrUtf8, sizeof (long) * nAddrPtrMax);
1589                         free (AddrUtf8), AddrUtf8 = ptr;
1590                         nAddrPtrMax *= 2;
1591                 }
1592                 if (((unsigned char) source[i] < 32) ||
1593                     ((unsigned char) source[i] > 126)) {
1594                         need_to_encode = 1;
1595                         AddrUtf8[nColons] = 1;
1596                 }
1597                 if (source[i] == '"')
1598                         InQuotes = !InQuotes;
1599                 if (!InQuotes && source[i] == ',') {
1600                         AddrPtr[nColons] = i;
1601                         nColons++;
1602                 }
1603                 i++;
1604         }
1605         if (need_to_encode == 0) {
1606                 free(AddrPtr);
1607                 free(AddrUtf8);
1608                 return source;
1609         }
1610
1611         SourceLen = i;
1612         EncodedMaxLen = nColons * (sizeof(headerStr) + 3) + SourceLen * 3;
1613         Encoded = (char*) malloc (EncodedMaxLen);
1614
1615         for (i = 0; i < nColons; i++)
1616                 source[AddrPtr[i]++] = '\0';
1617
1618         nPtr = Encoded;
1619         *nPtr = '\0';
1620         for (i = 0; i < nColons && nPtr != NULL; i++) {
1621                 nmax = EncodedMaxLen - (nPtr - Encoded);
1622                 if (AddrUtf8[i]) {
1623                         process_rfc822_addr(&source[AddrPtr[i]],
1624                                             user,
1625                                             node,
1626                                             name);
1627                         /* TODO: libIDN here ! */
1628                         if (IsEmptyStr(name)) {
1629                                 n = snprintf(nPtr, nmax,
1630                                              (i==0)?"%s@%s" : ",%s@%s",
1631                                              user, node);
1632                         }
1633                         else {
1634                                 EncodedName = rfc2047encode(name, strlen(name));
1635                                 n = snprintf(nPtr, nmax,
1636                                              (i==0)?"%s <%s@%s>" : ",%s <%s@%s>",
1637                                              EncodedName, user, node);
1638                                 free(EncodedName);
1639                         }
1640                 }
1641                 else {
1642                         n = snprintf(nPtr, nmax,
1643                                      (i==0)?"%s" : ",%s",
1644                                      &source[AddrPtr[i]]);
1645                 }
1646                 if (n > 0 )
1647                         nPtr += n;
1648                 else {
1649                         char *ptr, *nnPtr;
1650                         ptr = (char*) malloc(EncodedMaxLen * 2);
1651                         memcpy(ptr, Encoded, EncodedMaxLen);
1652                         nnPtr = ptr + (nPtr - Encoded), nPtr = nnPtr;
1653                         free(Encoded), Encoded = ptr;
1654                         EncodedMaxLen *= 2;
1655                         i--; /* do it once more with properly lengthened buffer */
1656                 }
1657         }
1658         for (i = 0; i < nColons; i++)
1659                 source[--AddrPtr[i]] = ',';
1660         free(AddrUtf8);
1661         free(AddrPtr);
1662         return Encoded;
1663 }
1664
1665
1666 /* If the last item in a list of recipients was truncated to a partial address,
1667  * remove it completely in order to avoid choking libSieve
1668  */
1669 void sanitize_truncated_recipient(char *str)
1670 {
1671         if (!str) return;
1672         if (num_tokens(str, ',') < 2) return;
1673
1674         int len = strlen(str);
1675         if (len < 900) return;
1676         if (len > 998) str[998] = 0;
1677
1678         char *cptr = strrchr(str, ',');
1679         if (!cptr) return;
1680
1681         char *lptr = strchr(cptr, '<');
1682         char *rptr = strchr(cptr, '>');
1683
1684         if ( (lptr) && (rptr) && (rptr > lptr) ) return;
1685
1686         *cptr = 0;
1687 }
1688
1689
1690
1691 /*
1692  * Get a message off disk.  (returns om_* values found in msgbase.h)
1693  */
1694 int CtdlOutputPreLoadedMsg(
1695                 struct CtdlMessage *TheMessage,
1696                 int mode,               /* how would you like that message? */
1697                 int headers_only,       /* eschew the message body? */
1698                 int do_proto,           /* do Citadel protocol responses? */
1699                 int crlf,               /* Use CRLF newlines instead of LF? */
1700                 int flags               /* should the bessage be exported clean? */
1701 ) {
1702         int i, j, k;
1703         char buf[SIZ];
1704         cit_uint8_t ch, prev_ch;
1705         char allkeys[30];
1706         char display_name[256];
1707         char *mptr, *mpptr;
1708         char *nl;       /* newline string */
1709         int suppress_f = 0;
1710         int subject_found = 0;
1711         struct ma_info ma;
1712
1713         /* Buffers needed for RFC822 translation.  These are all filled
1714          * using functions that are bounds-checked, and therefore we can
1715          * make them substantially smaller than SIZ.
1716          */
1717         char suser[100];
1718         char luser[100];
1719         char fuser[100];
1720         char snode[100];
1721         char mid[100];
1722         char datestamp[100];
1723
1724         CtdlLogPrintf(CTDL_DEBUG, "CtdlOutputPreLoadedMsg(TheMessage=%s, %d, %d, %d, %d\n",
1725                 ((TheMessage == NULL) ? "NULL" : "not null"),
1726                 mode, headers_only, do_proto, crlf);
1727
1728         strcpy(mid, "unknown");
1729         nl = (crlf ? "\r\n" : "\n");
1730
1731         if (!is_valid_message(TheMessage)) {
1732                 CtdlLogPrintf(CTDL_ERR,
1733                         "ERROR: invalid preloaded message for output\n");
1734                 cit_backtrace ();
1735                 return(om_no_such_msg);
1736         }
1737
1738         /* Are we downloading a MIME component? */
1739         if (mode == MT_DOWNLOAD) {
1740                 if (TheMessage->cm_format_type != FMT_RFC822) {
1741                         if (do_proto)
1742                                 cprintf("%d This is not a MIME message.\n",
1743                                 ERROR + ILLEGAL_VALUE);
1744                 } else if (CC->download_fp != NULL) {
1745                         if (do_proto) cprintf(
1746                                 "%d You already have a download open.\n",
1747                                 ERROR + RESOURCE_BUSY);
1748                 } else {
1749                         /* Parse the message text component */
1750                         mptr = TheMessage->cm_fields['M'];
1751                         mime_parser(mptr, NULL, *mime_download, NULL, NULL, NULL, 0);
1752                         /* If there's no file open by this time, the requested
1753                          * section wasn't found, so print an error
1754                          */
1755                         if (CC->download_fp == NULL) {
1756                                 if (do_proto) cprintf(
1757                                         "%d Section %s not found.\n",
1758                                         ERROR + FILE_NOT_FOUND,
1759                                         CC->download_desired_section);
1760                         }
1761                 }
1762                 return((CC->download_fp != NULL) ? om_ok : om_mime_error);
1763         }
1764
1765         /* MT_SPEW_SECTION is like MT_DOWNLOAD except it outputs the whole MIME part
1766          * in a single server operation instead of opening a download file.
1767          */
1768         if (mode == MT_SPEW_SECTION) {
1769                 if (TheMessage->cm_format_type != FMT_RFC822) {
1770                         if (do_proto)
1771                                 cprintf("%d This is not a MIME message.\n",
1772                                 ERROR + ILLEGAL_VALUE);
1773                 } else {
1774                         /* Parse the message text component */
1775                         int found_it = 0;
1776
1777                         mptr = TheMessage->cm_fields['M'];
1778                         mime_parser(mptr, NULL, *mime_spew_section, NULL, NULL, (void *)&found_it, 0);
1779                         /* If section wasn't found, print an error
1780                          */
1781                         if (!found_it) {
1782                                 if (do_proto) cprintf(
1783                                         "%d Section %s not found.\n",
1784                                         ERROR + FILE_NOT_FOUND,
1785                                         CC->download_desired_section);
1786                         }
1787                 }
1788                 return((CC->download_fp != NULL) ? om_ok : om_mime_error);
1789         }
1790
1791         /* now for the user-mode message reading loops */
1792         if (do_proto) cprintf("%d msg:\n", LISTING_FOLLOWS);
1793
1794         /* Does the caller want to skip the headers? */
1795         if (headers_only == HEADERS_NONE) goto START_TEXT;
1796
1797         /* Tell the client which format type we're using. */
1798         if ( (mode == MT_CITADEL) && (do_proto) ) {
1799                 cprintf("type=%d\n", TheMessage->cm_format_type);
1800         }
1801
1802         /* nhdr=yes means that we're only displaying headers, no body */
1803         if ( (TheMessage->cm_anon_type == MES_ANONONLY)
1804            && ((mode == MT_CITADEL) || (mode == MT_MIME))
1805            && (do_proto)
1806            ) {
1807                 cprintf("nhdr=yes\n");
1808         }
1809
1810         /* begin header processing loop for Citadel message format */
1811
1812         if ((mode == MT_CITADEL) || (mode == MT_MIME)) {
1813
1814                 safestrncpy(display_name, "<unknown>", sizeof display_name);
1815                 if (TheMessage->cm_fields['A']) {
1816                         strcpy(buf, TheMessage->cm_fields['A']);
1817                         if (TheMessage->cm_anon_type == MES_ANONONLY) {
1818                                 safestrncpy(display_name, "****", sizeof display_name);
1819                         }
1820                         else if (TheMessage->cm_anon_type == MES_ANONOPT) {
1821                                 safestrncpy(display_name, "anonymous", sizeof display_name);
1822                         }
1823                         else {
1824                                 safestrncpy(display_name, buf, sizeof display_name);
1825                         }
1826                         if ((is_room_aide())
1827                             && ((TheMessage->cm_anon_type == MES_ANONONLY)
1828                              || (TheMessage->cm_anon_type == MES_ANONOPT))) {
1829                                 size_t tmp = strlen(display_name);
1830                                 snprintf(&display_name[tmp],
1831                                          sizeof display_name - tmp,
1832                                          " [%s]", buf);
1833                         }
1834                 }
1835
1836                 /* Don't show Internet address for users on the
1837                  * local Citadel network.
1838                  */
1839                 suppress_f = 0;
1840                 if (TheMessage->cm_fields['N'] != NULL)
1841                    if (!IsEmptyStr(TheMessage->cm_fields['N']))
1842                       if (haschar(TheMessage->cm_fields['N'], '.') == 0) {
1843                         suppress_f = 1;
1844                 }
1845
1846                 /* Now spew the header fields in the order we like them. */
1847                 safestrncpy(allkeys, FORDER, sizeof allkeys);
1848                 for (i=0; i<strlen(allkeys); ++i) {
1849                         k = (int) allkeys[i];
1850                         if (k != 'M') {
1851                                 if ( (TheMessage->cm_fields[k] != NULL)
1852                                    && (msgkeys[k] != NULL) ) {
1853                                         if ((k == 'V') || (k == 'R') || (k == 'Y')) {
1854                                                 sanitize_truncated_recipient(TheMessage->cm_fields[k]);
1855                                         }
1856                                         if (k == 'A') {
1857                                                 if (do_proto) cprintf("%s=%s\n",
1858                                                         msgkeys[k],
1859                                                         display_name);
1860                                         }
1861                                         else if ((k == 'F') && (suppress_f)) {
1862                                                 /* do nothing */
1863                                         }
1864                                         /* Masquerade display name if needed */
1865                                         else {
1866                                                 if (do_proto) cprintf("%s=%s\n",
1867                                                         msgkeys[k],
1868                                                         TheMessage->cm_fields[k]
1869                                         );
1870                                         }
1871                                 }
1872                         }
1873                 }
1874
1875         }
1876
1877         /* begin header processing loop for RFC822 transfer format */
1878
1879         strcpy(suser, "");
1880         strcpy(luser, "");
1881         strcpy(fuser, "");
1882         strcpy(snode, NODENAME);
1883         if (mode == MT_RFC822) {
1884                 for (i = 0; i < 256; ++i) {
1885                         if (TheMessage->cm_fields[i]) {
1886                                 mptr = mpptr = TheMessage->cm_fields[i];
1887
1888                                 if (i == 'A') {
1889                                         safestrncpy(luser, mptr, sizeof luser);
1890                                         safestrncpy(suser, mptr, sizeof suser);
1891                                 }
1892                                 else if (i == 'Y') {
1893                                         if ((flags & QP_EADDR) != 0) {
1894                                                 mptr = qp_encode_email_addrs(mptr);
1895                                         }
1896                                         sanitize_truncated_recipient(mptr);
1897                                         cprintf("CC: %s%s", mptr, nl);
1898                                 }
1899                                 else if (i == 'P') {
1900                                         cprintf("Return-Path: %s%s", mptr, nl);
1901                                 }
1902                                 else if (i == 'L') {
1903                                         cprintf("List-ID: %s%s", mptr, nl);
1904                                 }
1905                                 else if (i == 'V') {
1906                                         if ((flags & QP_EADDR) != 0)
1907                                                 mptr = qp_encode_email_addrs(mptr);
1908                                         cprintf("Envelope-To: %s%s", mptr, nl);
1909                                 }
1910                                 else if (i == 'U') {
1911                                         cprintf("Subject: %s%s", mptr, nl);
1912                                         subject_found = 1;
1913                                 }
1914                                 else if (i == 'I')
1915                                         safestrncpy(mid, mptr, sizeof mid);
1916                                 else if (i == 'F')
1917                                         safestrncpy(fuser, mptr, sizeof fuser);
1918                                 /* else if (i == 'O')
1919                                         cprintf("X-Citadel-Room: %s%s",
1920                                                 mptr, nl); */
1921                                 else if (i == 'N')
1922                                         safestrncpy(snode, mptr, sizeof snode);
1923                                 else if (i == 'R')
1924                                 {
1925                                         if (haschar(mptr, '@') == 0)
1926                                         {
1927                                                 sanitize_truncated_recipient(mptr);
1928                                                 cprintf("To: %s@%s", mptr, config.c_fqdn);
1929                                                 cprintf("%s", nl);
1930                                         }
1931                                         else
1932                                         {
1933                                                 if ((flags & QP_EADDR) != 0) {
1934                                                         mptr = qp_encode_email_addrs(mptr);
1935                                                 }
1936                                                 sanitize_truncated_recipient(mptr);
1937                                                 cprintf("To: %s", mptr);
1938                                                 cprintf("%s", nl);
1939                                         }
1940                                 }
1941                                 else if (i == 'T') {
1942                                         datestring(datestamp, sizeof datestamp,
1943                                                 atol(mptr), DATESTRING_RFC822);
1944                                         cprintf("Date: %s%s", datestamp, nl);
1945                                 }
1946                                 else if (i == 'W') {
1947                                         cprintf("References: ");
1948                                         k = num_tokens(mptr, '|');
1949                                         for (j=0; j<k; ++j) {
1950                                                 extract_token(buf, mptr, j, '|', sizeof buf);
1951                                                 cprintf("<%s>", buf);
1952                                                 if (j == (k-1)) {
1953                                                         cprintf("%s", nl);
1954                                                 }
1955                                                 else {
1956                                                         cprintf(" ");
1957                                                 }
1958                                         }
1959                                 }
1960                                 if (mptr != mpptr)
1961                                         free (mptr);
1962                         }
1963                 }
1964                 if (subject_found == 0) {
1965                         cprintf("Subject: (no subject)%s", nl);
1966                 }
1967         }
1968
1969         for (i=0; !IsEmptyStr(&suser[i]); ++i) {
1970                 suser[i] = tolower(suser[i]);
1971                 if (!isalnum(suser[i])) suser[i]='_';
1972         }
1973
1974         if (mode == MT_RFC822) {
1975                 if (!strcasecmp(snode, NODENAME)) {
1976                         safestrncpy(snode, FQDN, sizeof snode);
1977                 }
1978
1979                 /* Construct a fun message id */
1980                 cprintf("Message-ID: <%s", mid);/// todo: this possibly breaks threadding mails.
1981                 if (strchr(mid, '@')==NULL) {
1982                         cprintf("@%s", snode);
1983                 }
1984                 cprintf(">%s", nl);
1985
1986                 if (!is_room_aide() && (TheMessage->cm_anon_type == MES_ANONONLY)) {
1987                         cprintf("From: \"----\" <x@x.org>%s", nl);
1988                 }
1989                 else if (!is_room_aide() && (TheMessage->cm_anon_type == MES_ANONOPT)) {
1990                         cprintf("From: \"anonymous\" <x@x.org>%s", nl);
1991                 }
1992                 else if (!IsEmptyStr(fuser)) {
1993                         cprintf("From: \"%s\" <%s>%s", luser, fuser, nl);
1994                 }
1995                 else {
1996                         cprintf("From: \"%s\" <%s@%s>%s", luser, suser, snode, nl);
1997                 }
1998
1999                 /* Blank line signifying RFC822 end-of-headers */
2000                 if (TheMessage->cm_format_type != FMT_RFC822) {
2001                         cprintf("%s", nl);
2002                 }
2003         }
2004
2005         /* end header processing loop ... at this point, we're in the text */
2006 START_TEXT:
2007         if (headers_only == HEADERS_FAST) goto DONE;
2008         mptr = TheMessage->cm_fields['M'];
2009
2010         /* Tell the client about the MIME parts in this message */
2011         if (TheMessage->cm_format_type == FMT_RFC822) {
2012                 if ( (mode == MT_CITADEL) || (mode == MT_MIME) ) {
2013                         memset(&ma, 0, sizeof(struct ma_info));
2014                         mime_parser(mptr, NULL,
2015                                 (do_proto ? *list_this_part : NULL),
2016                                 (do_proto ? *list_this_pref : NULL),
2017                                 (do_proto ? *list_this_suff : NULL),
2018                                 (void *)&ma, 0);
2019                 }
2020                 else if (mode == MT_RFC822) {   /* unparsed RFC822 dump */
2021                         char *start_of_text = NULL;
2022                         start_of_text = strstr(mptr, "\n\r\n");
2023                         if (start_of_text == NULL) start_of_text = strstr(mptr, "\n\n");
2024                         if (start_of_text == NULL) start_of_text = mptr;
2025                         ++start_of_text;
2026                         start_of_text = strstr(start_of_text, "\n");
2027                         ++start_of_text;
2028
2029                         char outbuf[1024];
2030                         int outlen = 0;
2031                         int nllen = strlen(nl);
2032                         prev_ch = 0;
2033                         while (ch=*mptr, ch!=0) {
2034                                 if (ch==13) {
2035                                         /* do nothing */
2036                                 }
2037                                 else {
2038                                         if (
2039                                                 ((headers_only == HEADERS_NONE) && (mptr >= start_of_text))
2040                                            ||   ((headers_only == HEADERS_ONLY) && (mptr < start_of_text))
2041                                            ||   ((headers_only != HEADERS_NONE) && (headers_only != HEADERS_ONLY))
2042                                         ) {
2043                                                 if (ch == 10) {
2044                                                         sprintf(&outbuf[outlen], "%s", nl);
2045                                                         outlen += nllen;
2046                                                 }
2047                                                 else {
2048                                                         outbuf[outlen++] = ch;
2049                                                 }
2050                                         }
2051                                 }
2052                                 if (flags & ESC_DOT)
2053                                 {
2054                                         if ((prev_ch == 10) && (ch == '.') && ((*(mptr+1) == 13) || (*(mptr+1) == 10)))
2055                                         {
2056                                                 outbuf[outlen++] = '.';
2057                                         }
2058                                 }
2059                                 prev_ch = ch;
2060                                 ++mptr;
2061                                 if (outlen > 1000) {
2062                                         client_write(outbuf, outlen);
2063                                         outlen = 0;
2064                                 }
2065                         }
2066                         if (outlen > 0) {
2067                                 client_write(outbuf, outlen);
2068                                 outlen = 0;
2069                         }
2070
2071                         goto DONE;
2072                 }
2073         }
2074
2075         if (headers_only == HEADERS_ONLY) {
2076                 goto DONE;
2077         }
2078
2079         /* signify start of msg text */
2080         if ( (mode == MT_CITADEL) || (mode == MT_MIME) ) {
2081                 if (do_proto) cprintf("text\n");
2082         }
2083
2084         /* If the format type on disk is 1 (fixed-format), then we want
2085          * everything to be output completely literally ... regardless of
2086          * what message transfer format is in use.
2087          */
2088         if (TheMessage->cm_format_type == FMT_FIXED) {
2089                 int buflen;
2090                 if (mode == MT_MIME) {
2091                         cprintf("Content-type: text/plain\n\n");
2092                 }
2093                 *buf = '\0';
2094                 buflen = 0;
2095                 while (ch = *mptr++, ch > 0) {
2096                         if (ch == 13)
2097                                 ch = 10;
2098                         if ((ch == 10) || (buflen > 250)) {
2099                                 buf[buflen] = '\0';
2100                                 cprintf("%s%s", buf, nl);
2101                                 *buf = '\0';
2102                                 buflen = 0;
2103                         } else {
2104                                 buf[buflen] = ch;
2105                                 buflen++;
2106                         }
2107                 }
2108                 buf[buflen] = '\0';
2109                 if (!IsEmptyStr(buf))
2110                         cprintf("%s%s", buf, nl);
2111         }
2112
2113         /* If the message on disk is format 0 (Citadel vari-format), we
2114          * output using the formatter at 80 columns.  This is the final output
2115          * form if the transfer format is RFC822, but if the transfer format
2116          * is Citadel proprietary, it'll still work, because the indentation
2117          * for new paragraphs is correct and the client will reformat the
2118          * message to the reader's screen width.
2119          */
2120         if (TheMessage->cm_format_type == FMT_CITADEL) {
2121                 if (mode == MT_MIME) {
2122                         cprintf("Content-type: text/x-citadel-variformat\n\n");
2123                 }
2124                 memfmout(mptr, 0, nl);
2125         }
2126
2127         /* If the message on disk is format 4 (MIME), we've gotta hand it
2128          * off to the MIME parser.  The client has already been told that
2129          * this message is format 1 (fixed format), so the callback function
2130          * we use will display those parts as-is.
2131          */
2132         if (TheMessage->cm_format_type == FMT_RFC822) {
2133                 memset(&ma, 0, sizeof(struct ma_info));
2134
2135                 if (mode == MT_MIME) {
2136                         ma.use_fo_hooks = 0;
2137                         strcpy(ma.chosen_part, "1");
2138                         ma.chosen_pref = 9999;
2139                         mime_parser(mptr, NULL,
2140                                 *choose_preferred, *fixed_output_pre,
2141                                 *fixed_output_post, (void *)&ma, 0);
2142                         mime_parser(mptr, NULL,
2143                                 *output_preferred, NULL, NULL, (void *)&ma, CC->msg4_dont_decode);
2144                 }
2145                 else {
2146                         ma.use_fo_hooks = 1;
2147                         mime_parser(mptr, NULL,
2148                                 *fixed_output, *fixed_output_pre,
2149                                 *fixed_output_post, (void *)&ma, 0);
2150                 }
2151
2152         }
2153
2154 DONE:   /* now we're done */
2155         if (do_proto) cprintf("000\n");
2156         return(om_ok);
2157 }
2158
2159
2160
2161 /*
2162  * display a message (mode 0 - Citadel proprietary)
2163  */
2164 void cmd_msg0(char *cmdbuf)
2165 {
2166         long msgid;
2167         int headers_only = HEADERS_ALL;
2168
2169         msgid = extract_long(cmdbuf, 0);
2170         headers_only = extract_int(cmdbuf, 1);
2171
2172         CtdlOutputMsg(msgid, MT_CITADEL, headers_only, 1, 0, NULL, 0);
2173         return;
2174 }
2175
2176
2177 /*
2178  * display a message (mode 2 - RFC822)
2179  */
2180 void cmd_msg2(char *cmdbuf)
2181 {
2182         long msgid;
2183         int headers_only = HEADERS_ALL;
2184
2185         msgid = extract_long(cmdbuf, 0);
2186         headers_only = extract_int(cmdbuf, 1);
2187
2188         CtdlOutputMsg(msgid, MT_RFC822, headers_only, 1, 1, NULL, 0);
2189 }
2190
2191
2192
2193 /*
2194  * display a message (mode 3 - IGnet raw format - internal programs only)
2195  */
2196 void cmd_msg3(char *cmdbuf)
2197 {
2198         long msgnum;
2199         struct CtdlMessage *msg = NULL;
2200         struct ser_ret smr;
2201
2202         if (CC->internal_pgm == 0) {
2203                 cprintf("%d This command is for internal programs only.\n",
2204                         ERROR + HIGHER_ACCESS_REQUIRED);
2205                 return;
2206         }
2207
2208         msgnum = extract_long(cmdbuf, 0);
2209         msg = CtdlFetchMessage(msgnum, 1);
2210         if (msg == NULL) {
2211                 cprintf("%d Message %ld not found.\n",
2212                         ERROR + MESSAGE_NOT_FOUND, msgnum);
2213                 return;
2214         }
2215
2216         serialize_message(&smr, msg);
2217         CtdlFreeMessage(msg);
2218
2219         if (smr.len == 0) {
2220                 cprintf("%d Unable to serialize message\n",
2221                         ERROR + INTERNAL_ERROR);
2222                 return;
2223         }
2224
2225         cprintf("%d %ld\n", BINARY_FOLLOWS, (long)smr.len);
2226         client_write((char *)smr.ser, (int)smr.len);
2227         free(smr.ser);
2228 }
2229
2230
2231
2232 /*
2233  * Display a message using MIME content types
2234  */
2235 void cmd_msg4(char *cmdbuf)
2236 {
2237         long msgid;
2238         char section[64];
2239
2240         msgid = extract_long(cmdbuf, 0);
2241         extract_token(section, cmdbuf, 1, '|', sizeof section);
2242         CtdlOutputMsg(msgid, MT_MIME, 0, 1, 0, (section[0] ? section : NULL) , 0);
2243 }
2244
2245
2246
2247 /*
2248  * Client tells us its preferred message format(s)
2249  */
2250 void cmd_msgp(char *cmdbuf)
2251 {
2252         if (!strcasecmp(cmdbuf, "dont_decode")) {
2253                 CC->msg4_dont_decode = 1;
2254                 cprintf("%d MSG4 will not pre-decode messages.\n", CIT_OK);
2255         }
2256         else {
2257                 safestrncpy(CC->preferred_formats, cmdbuf, sizeof(CC->preferred_formats));
2258                 cprintf("%d Preferred MIME formats have been set.\n", CIT_OK);
2259         }
2260 }
2261
2262
2263 /*
2264  * Open a component of a MIME message as a download file
2265  */
2266 void cmd_opna(char *cmdbuf)
2267 {
2268         long msgid;
2269         char desired_section[128];
2270
2271         msgid = extract_long(cmdbuf, 0);
2272         extract_token(desired_section, cmdbuf, 1, '|', sizeof desired_section);
2273         safestrncpy(CC->download_desired_section, desired_section,
2274                 sizeof CC->download_desired_section);
2275         CtdlOutputMsg(msgid, MT_DOWNLOAD, 0, 1, 1, NULL, 0);
2276 }
2277
2278
2279 /*
2280  * Open a component of a MIME message and transmit it all at once
2281  */
2282 void cmd_dlat(char *cmdbuf)
2283 {
2284         long msgid;
2285         char desired_section[128];
2286
2287         msgid = extract_long(cmdbuf, 0);
2288         extract_token(desired_section, cmdbuf, 1, '|', sizeof desired_section);
2289         safestrncpy(CC->download_desired_section, desired_section,
2290                 sizeof CC->download_desired_section);
2291         CtdlOutputMsg(msgid, MT_SPEW_SECTION, 0, 1, 1, NULL, 0);
2292 }
2293
2294
2295 /*
2296  * Save one or more message pointers into a specified room
2297  * (Returns 0 for success, nonzero for failure)
2298  * roomname may be NULL to use the current room
2299  *
2300  * Note that the 'supplied_msg' field may be set to NULL, in which case
2301  * the message will be fetched from disk, by number, if we need to perform
2302  * replication checks.  This adds an additional database read, so if the
2303  * caller already has the message in memory then it should be supplied.  (Obviously
2304  * this mode of operation only works if we're saving a single message.)
2305  */
2306 int CtdlSaveMsgPointersInRoom(char *roomname, long newmsgidlist[], int num_newmsgs,
2307                                 int do_repl_check, struct CtdlMessage *supplied_msg)
2308 {
2309         int i, j, unique;
2310         char hold_rm[ROOMNAMELEN];
2311         struct cdbdata *cdbfr;
2312         int num_msgs;
2313         long *msglist;
2314         long highest_msg = 0L;
2315
2316         long msgid = 0;
2317         struct CtdlMessage *msg = NULL;
2318
2319         long *msgs_to_be_merged = NULL;
2320         int num_msgs_to_be_merged = 0;
2321
2322         CtdlLogPrintf(CTDL_DEBUG,
2323                 "CtdlSaveMsgPointersInRoom(room=%s, num_msgs=%d, repl=%d)\n",
2324                 roomname, num_newmsgs, do_repl_check);
2325
2326         strcpy(hold_rm, CC->room.QRname);
2327
2328         /* Sanity checks */
2329         if (newmsgidlist == NULL) return(ERROR + INTERNAL_ERROR);
2330         if (num_newmsgs < 1) return(ERROR + INTERNAL_ERROR);
2331         if (num_newmsgs > 1) supplied_msg = NULL;
2332
2333         /* Now the regular stuff */
2334         if (lgetroom(&CC->room,
2335            ((roomname != NULL) ? roomname : CC->room.QRname) )
2336            != 0) {
2337                 CtdlLogPrintf(CTDL_ERR, "No such room <%s>\n", roomname);
2338                 return(ERROR + ROOM_NOT_FOUND);
2339         }
2340
2341
2342         msgs_to_be_merged = malloc(sizeof(long) * num_newmsgs);
2343         num_msgs_to_be_merged = 0;
2344
2345
2346         cdbfr = cdb_fetch(CDB_MSGLISTS, &CC->room.QRnumber, sizeof(long));
2347         if (cdbfr == NULL) {
2348                 msglist = NULL;
2349                 num_msgs = 0;
2350         } else {
2351                 msglist = (long *) cdbfr->ptr;
2352                 cdbfr->ptr = NULL;      /* CtdlSaveMsgPointerInRoom() now owns this memory */
2353                 num_msgs = cdbfr->len / sizeof(long);
2354                 cdb_free(cdbfr);
2355         }
2356
2357
2358         /* Create a list of msgid's which were supplied by the caller, but do
2359          * not already exist in the target room.  It is absolutely taboo to
2360          * have more than one reference to the same message in a room.
2361          */
2362         for (i=0; i<num_newmsgs; ++i) {
2363                 unique = 1;
2364                 if (num_msgs > 0) for (j=0; j<num_msgs; ++j) {
2365                         if (msglist[j] == newmsgidlist[i]) {
2366                                 unique = 0;
2367                         }
2368                 }
2369                 if (unique) {
2370                         msgs_to_be_merged[num_msgs_to_be_merged++] = newmsgidlist[i];
2371                 }
2372         }
2373
2374         CtdlLogPrintf(9, "%d unique messages to be merged\n", num_msgs_to_be_merged);
2375
2376         /*
2377          * Now merge the new messages
2378          */
2379         msglist = realloc(msglist, (sizeof(long) * (num_msgs + num_msgs_to_be_merged)) );
2380         if (msglist == NULL) {
2381                 CtdlLogPrintf(CTDL_ALERT, "ERROR: can't realloc message list!\n");
2382         }
2383         memcpy(&msglist[num_msgs], msgs_to_be_merged, (sizeof(long) * num_msgs_to_be_merged) );
2384         num_msgs += num_msgs_to_be_merged;
2385
2386         /* Sort the message list, so all the msgid's are in order */
2387         num_msgs = sort_msglist(msglist, num_msgs);
2388
2389         /* Determine the highest message number */
2390         highest_msg = msglist[num_msgs - 1];
2391
2392         /* Write it back to disk. */
2393         cdb_store(CDB_MSGLISTS, &CC->room.QRnumber, (int)sizeof(long),
2394                   msglist, (int)(num_msgs * sizeof(long)));
2395
2396         /* Free up the memory we used. */
2397         free(msglist);
2398
2399         /* Update the highest-message pointer and unlock the room. */
2400         CC->room.QRhighest = highest_msg;
2401         lputroom(&CC->room);
2402
2403         /* Perform replication checks if necessary */
2404         if ( (DoesThisRoomNeedEuidIndexing(&CC->room)) && (do_repl_check) ) {
2405                 CtdlLogPrintf(CTDL_DEBUG, "CtdlSaveMsgPointerInRoom() doing repl checks\n");
2406
2407                 for (i=0; i<num_msgs_to_be_merged; ++i) {
2408                         msgid = msgs_to_be_merged[i];
2409
2410                         if (supplied_msg != NULL) {
2411                                 msg = supplied_msg;
2412                         }
2413                         else {
2414                                 msg = CtdlFetchMessage(msgid, 0);
2415                         }
2416
2417                         if (msg != NULL) {
2418                                 ReplicationChecks(msg);
2419
2420                                 /* If the message has an Exclusive ID, index that... */
2421                                 if (msg->cm_fields['E'] != NULL) {
2422                                         index_message_by_euid(msg->cm_fields['E'], &CC->room, msgid);
2423                                 }
2424
2425                                 /* Free up the memory we may have allocated */
2426                                 if (msg != supplied_msg) {
2427                                         CtdlFreeMessage(msg);
2428                                 }
2429                         }
2430
2431                 }
2432         }
2433
2434         else {
2435                 CtdlLogPrintf(CTDL_DEBUG, "CtdlSaveMsgPointerInRoom() skips repl checks\n");
2436         }
2437
2438         /* Submit this room for processing by hooks */
2439         PerformRoomHooks(&CC->room);
2440
2441         /* Go back to the room we were in before we wandered here... */
2442         getroom(&CC->room, hold_rm);
2443
2444         /* Bump the reference count for all messages which were merged */
2445         for (i=0; i<num_msgs_to_be_merged; ++i) {
2446                 AdjRefCount(msgs_to_be_merged[i], +1);
2447         }
2448
2449         /* Free up memory... */
2450         if (msgs_to_be_merged != NULL) {
2451                 free(msgs_to_be_merged);
2452         }
2453
2454         /* Return success. */
2455         return (0);
2456 }
2457
2458
2459 /*
2460  * This is the same as CtdlSaveMsgPointersInRoom() but it only accepts
2461  * a single message.
2462  */
2463 int CtdlSaveMsgPointerInRoom(char *roomname, long msgid,
2464                         int do_repl_check, struct CtdlMessage *supplied_msg)
2465 {
2466         return CtdlSaveMsgPointersInRoom(roomname, &msgid, 1, do_repl_check, supplied_msg);
2467 }
2468
2469
2470
2471
2472 /*
2473  * Message base operation to save a new message to the message store
2474  * (returns new message number)
2475  *
2476  * This is the back end for CtdlSubmitMsg() and should not be directly
2477  * called by server-side modules.
2478  *
2479  */
2480 long send_message(struct CtdlMessage *msg) {
2481         long newmsgid;
2482         long retval;
2483         char msgidbuf[256];
2484         struct ser_ret smr;
2485         int is_bigmsg = 0;
2486         char *holdM = NULL;
2487
2488         /* Get a new message number */
2489         newmsgid = get_new_message_number();
2490         snprintf(msgidbuf, sizeof msgidbuf, "%010ld@%s", newmsgid, config.c_fqdn);
2491
2492         /* Generate an ID if we don't have one already */
2493         if (msg->cm_fields['I']==NULL) {
2494                 msg->cm_fields['I'] = strdup(msgidbuf);
2495         }
2496
2497         /* If the message is big, set its body aside for storage elsewhere */
2498         if (msg->cm_fields['M'] != NULL) {
2499                 if (strlen(msg->cm_fields['M']) > BIGMSG) {
2500                         is_bigmsg = 1;
2501                         holdM = msg->cm_fields['M'];
2502                         msg->cm_fields['M'] = NULL;
2503                 }
2504         }
2505
2506         /* Serialize our data structure for storage in the database */
2507         serialize_message(&smr, msg);
2508
2509         if (is_bigmsg) {
2510                 msg->cm_fields['M'] = holdM;
2511         }
2512
2513         if (smr.len == 0) {
2514                 cprintf("%d Unable to serialize message\n",
2515                         ERROR + INTERNAL_ERROR);
2516                 return (-1L);
2517         }
2518
2519         /* Write our little bundle of joy into the message base */
2520         if (cdb_store(CDB_MSGMAIN, &newmsgid, (int)sizeof(long),
2521                       smr.ser, smr.len) < 0) {
2522                 CtdlLogPrintf(CTDL_ERR, "Can't store message\n");
2523                 retval = 0L;
2524         } else {
2525                 if (is_bigmsg) {
2526                         cdb_store(CDB_BIGMSGS,
2527                                 &newmsgid,
2528                                 (int)sizeof(long),
2529                                 holdM,
2530                                 (strlen(holdM) + 1)
2531                         );
2532                 }
2533                 retval = newmsgid;
2534         }
2535
2536         /* Free the memory we used for the serialized message */
2537         free(smr.ser);
2538
2539         /* Return the *local* message ID to the caller
2540          * (even if we're storing an incoming network message)
2541          */
2542         return(retval);
2543 }
2544
2545
2546
2547 /*
2548  * Serialize a struct CtdlMessage into the format used on disk and network.
2549  *
2550  * This function loads up a "struct ser_ret" (defined in server.h) which
2551  * contains the length of the serialized message and a pointer to the
2552  * serialized message in memory.  THE LATTER MUST BE FREED BY THE CALLER.
2553  */
2554 void serialize_message(struct ser_ret *ret,             /* return values */
2555                         struct CtdlMessage *msg)        /* unserialized msg */
2556 {
2557         size_t wlen, fieldlen;
2558         int i;
2559         static char *forder = FORDER;
2560
2561         /*
2562          * Check for valid message format
2563          */
2564         if (is_valid_message(msg) == 0) {
2565                 CtdlLogPrintf(CTDL_ERR, "serialize_message() aborting due to invalid message\n");
2566                 ret->len = 0;
2567                 ret->ser = NULL;
2568                 return;
2569         }
2570
2571         ret->len = 3;
2572         for (i=0; i<26; ++i) if (msg->cm_fields[(int)forder[i]] != NULL)
2573                 ret->len = ret->len +
2574                         strlen(msg->cm_fields[(int)forder[i]]) + 2;
2575
2576         ret->ser = malloc(ret->len);
2577         if (ret->ser == NULL) {
2578                 CtdlLogPrintf(CTDL_ERR, "serialize_message() malloc(%ld) failed: %s\n",
2579                         (long)ret->len, strerror(errno));
2580                 ret->len = 0;
2581                 ret->ser = NULL;
2582                 return;
2583         }
2584
2585         ret->ser[0] = 0xFF;
2586         ret->ser[1] = msg->cm_anon_type;
2587         ret->ser[2] = msg->cm_format_type;
2588         wlen = 3;
2589
2590         for (i=0; i<26; ++i) if (msg->cm_fields[(int)forder[i]] != NULL) {
2591                 fieldlen = strlen(msg->cm_fields[(int)forder[i]]);
2592                 ret->ser[wlen++] = (char)forder[i];
2593                 safestrncpy((char *)&ret->ser[wlen], msg->cm_fields[(int)forder[i]], fieldlen+1);
2594                 wlen = wlen + fieldlen + 1;
2595         }
2596         if (ret->len != wlen) CtdlLogPrintf(CTDL_ERR, "ERROR: len=%ld wlen=%ld\n",
2597                 (long)ret->len, (long)wlen);
2598
2599         return;
2600 }
2601
2602
2603 /*
2604  * Serialize a struct CtdlMessage into the format used on disk and network.
2605  *
2606  * This function loads up a "struct ser_ret" (defined in server.h) which
2607  * contains the length of the serialized message and a pointer to the
2608  * serialized message in memory.  THE LATTER MUST BE FREED BY THE CALLER.
2609  */
2610 void dump_message(struct CtdlMessage *msg,      /* unserialized msg */
2611                   long Siz)                     /* how many chars ? */
2612 {
2613         size_t wlen;
2614         int i;
2615         static char *forder = FORDER;
2616         char *buf;
2617
2618         /*
2619          * Check for valid message format
2620          */
2621         if (is_valid_message(msg) == 0) {
2622                 CtdlLogPrintf(CTDL_ERR, "dump_message() aborting due to invalid message\n");
2623                 return;
2624         }
2625
2626         buf = (char*) malloc (Siz + 1);
2627
2628         wlen = 3;
2629
2630         for (i=0; i<26; ++i) if (msg->cm_fields[(int)forder[i]] != NULL) {
2631                         snprintf (buf, Siz, " msg[%c] = %s ...\n", (char) forder[i],
2632                                    msg->cm_fields[(int)forder[i]]);
2633                         client_write (buf, strlen(buf));
2634                 }
2635
2636         return;
2637 }
2638
2639
2640
2641 /*
2642  * Check to see if any messages already exist in the current room which
2643  * carry the same Exclusive ID as this one.  If any are found, delete them.
2644  */
2645 void ReplicationChecks(struct CtdlMessage *msg) {
2646         long old_msgnum = (-1L);
2647
2648         if (DoesThisRoomNeedEuidIndexing(&CC->room) == 0) return;
2649
2650         CtdlLogPrintf(CTDL_DEBUG, "Performing replication checks in <%s>\n",
2651                 CC->room.QRname);
2652
2653         /* No exclusive id?  Don't do anything. */
2654         if (msg == NULL) return;
2655         if (msg->cm_fields['E'] == NULL) return;
2656         if (IsEmptyStr(msg->cm_fields['E'])) return;
2657         /*CtdlLogPrintf(CTDL_DEBUG, "Exclusive ID: <%s> for room <%s>\n",
2658                 msg->cm_fields['E'], CC->room.QRname);*/
2659
2660         old_msgnum = locate_message_by_euid(msg->cm_fields['E'], &CC->room);
2661         if (old_msgnum > 0L) {
2662                 CtdlLogPrintf(CTDL_DEBUG, "ReplicationChecks() replacing message %ld\n", old_msgnum);
2663                 CtdlDeleteMessages(CC->room.QRname, &old_msgnum, 1, "");
2664         }
2665 }
2666
2667
2668
2669 /*
2670  * Save a message to disk and submit it into the delivery system.
2671  */
2672 long CtdlSubmitMsg(struct CtdlMessage *msg,     /* message to save */
2673                    struct recptypes *recps,     /* recipients (if mail) */
2674                    char *force,                 /* force a particular room? */
2675                    int flags                    /* should the bessage be exported clean? */
2676 ) {
2677         char submit_filename[128];
2678         char generated_timestamp[32];
2679         char hold_rm[ROOMNAMELEN];
2680         char actual_rm[ROOMNAMELEN];
2681         char force_room[ROOMNAMELEN];
2682         char content_type[SIZ];                 /* We have to learn this */
2683         char recipient[SIZ];
2684         long newmsgid;
2685         char *mptr = NULL;
2686         struct ctdluser userbuf;
2687         int a, i;
2688         struct MetaData smi;
2689         FILE *network_fp = NULL;
2690         static int seqnum = 1;
2691         struct CtdlMessage *imsg = NULL;
2692         char *instr = NULL;
2693         size_t instr_alloc = 0;
2694         struct ser_ret smr;
2695         char *hold_R, *hold_D;
2696         char *collected_addresses = NULL;
2697         struct addresses_to_be_filed *aptr = NULL;
2698         char *saved_rfc822_version = NULL;
2699         int qualified_for_journaling = 0;
2700         struct CitContext *CCC = CC;            /* CachedCitContext - performance boost */
2701         char bounce_to[1024] = "";
2702         size_t tmp = 0;
2703         int rv = 0;
2704
2705         CtdlLogPrintf(CTDL_DEBUG, "CtdlSubmitMsg() called\n");
2706         if (is_valid_message(msg) == 0) return(-1);     /* self check */
2707
2708         /* If this message has no timestamp, we take the liberty of
2709          * giving it one, right now.
2710          */
2711         if (msg->cm_fields['T'] == NULL) {
2712                 snprintf(generated_timestamp, sizeof generated_timestamp, "%ld", (long)time(NULL));
2713                 msg->cm_fields['T'] = strdup(generated_timestamp);
2714         }
2715
2716         /* If this message has no path, we generate one.
2717          */
2718         if (msg->cm_fields['P'] == NULL) {
2719                 if (msg->cm_fields['A'] != NULL) {
2720                         msg->cm_fields['P'] = strdup(msg->cm_fields['A']);
2721                         for (a=0; !IsEmptyStr(&msg->cm_fields['P'][a]); ++a) {
2722                                 if (isspace(msg->cm_fields['P'][a])) {
2723                                         msg->cm_fields['P'][a] = ' ';
2724                                 }
2725                         }
2726                 }
2727                 else {
2728                         msg->cm_fields['P'] = strdup("unknown");
2729                 }
2730         }
2731
2732         if (force == NULL) {
2733                 strcpy(force_room, "");
2734         }
2735         else {
2736                 strcpy(force_room, force);
2737         }
2738
2739         /* Learn about what's inside, because it's what's inside that counts */
2740         if (msg->cm_fields['M'] == NULL) {
2741                 CtdlLogPrintf(CTDL_ERR, "ERROR: attempt to save message with NULL body\n");
2742                 return(-2);
2743         }
2744
2745         switch (msg->cm_format_type) {
2746         case 0:
2747                 strcpy(content_type, "text/x-citadel-variformat");
2748                 break;
2749         case 1:
2750                 strcpy(content_type, "text/plain");
2751                 break;
2752         case 4:
2753                 strcpy(content_type, "text/plain");
2754                 mptr = bmstrcasestr(msg->cm_fields['M'], "Content-type:");
2755                 if (mptr != NULL) {
2756                         char *aptr;
2757                         safestrncpy(content_type, &mptr[13], sizeof content_type);
2758                         striplt(content_type);
2759                         aptr = content_type;
2760                         while (!IsEmptyStr(aptr)) {
2761                                 if ((*aptr == ';')
2762                                     || (*aptr == ' ')
2763                                     || (*aptr == 13)
2764                                     || (*aptr == 10)) {
2765                                         *aptr = 0;
2766                                 }
2767                                 else aptr++;
2768                         }
2769                 }
2770         }
2771
2772         /* Goto the correct room */
2773         CtdlLogPrintf(CTDL_DEBUG, "Selected room %s\n", (recps) ? CCC->room.QRname : SENTITEMS);
2774         strcpy(hold_rm, CCC->room.QRname);
2775         strcpy(actual_rm, CCC->room.QRname);
2776         if (recps != NULL) {
2777                 strcpy(actual_rm, SENTITEMS);
2778         }
2779
2780         /* If the user is a twit, move to the twit room for posting */
2781         if (TWITDETECT) {
2782                 if (CCC->user.axlevel == 2) {
2783                         strcpy(hold_rm, actual_rm);
2784                         strcpy(actual_rm, config.c_twitroom);
2785                         CtdlLogPrintf(CTDL_DEBUG, "Diverting to twit room\n");
2786                 }
2787         }
2788
2789         /* ...or if this message is destined for Aide> then go there. */
2790         if (!IsEmptyStr(force_room)) {
2791                 strcpy(actual_rm, force_room);
2792         }
2793
2794         CtdlLogPrintf(CTDL_DEBUG, "Final selection: %s\n", actual_rm);
2795         if (strcasecmp(actual_rm, CCC->room.QRname)) {
2796                 /* getroom(&CCC->room, actual_rm); */
2797                 usergoto(actual_rm, 0, 1, NULL, NULL);
2798         }
2799
2800         /*
2801          * If this message has no O (room) field, generate one.
2802          */
2803         if (msg->cm_fields['O'] == NULL) {
2804                 msg->cm_fields['O'] = strdup(CCC->room.QRname);
2805         }
2806
2807         /* Perform "before save" hooks (aborting if any return nonzero) */
2808         CtdlLogPrintf(CTDL_DEBUG, "Performing before-save hooks\n");
2809         if (PerformMessageHooks(msg, EVT_BEFORESAVE) > 0) return(-3);
2810
2811         /*
2812          * If this message has an Exclusive ID, and the room is replication
2813          * checking enabled, then do replication checks.
2814          */
2815         if (DoesThisRoomNeedEuidIndexing(&CCC->room)) {
2816                 ReplicationChecks(msg);
2817         }
2818
2819         /* Save it to disk */
2820         CtdlLogPrintf(CTDL_DEBUG, "Saving to disk\n");
2821         newmsgid = send_message(msg);
2822         if (newmsgid <= 0L) return(-5);
2823
2824         /* Write a supplemental message info record.  This doesn't have to
2825          * be a critical section because nobody else knows about this message
2826          * yet.
2827          */
2828         CtdlLogPrintf(CTDL_DEBUG, "Creating MetaData record\n");
2829         memset(&smi, 0, sizeof(struct MetaData));
2830         smi.meta_msgnum = newmsgid;
2831         smi.meta_refcount = 0;
2832         safestrncpy(smi.meta_content_type, content_type,
2833                         sizeof smi.meta_content_type);
2834
2835         /*
2836          * Measure how big this message will be when rendered as RFC822.
2837          * We do this for two reasons:
2838          * 1. We need the RFC822 length for the new metadata record, so the
2839          *    POP and IMAP services don't have to calculate message lengths
2840          *    while the user is waiting (multiplied by potentially hundreds
2841          *    or thousands of messages).
2842          * 2. If journaling is enabled, we will need an RFC822 version of the
2843          *    message to attach to the journalized copy.
2844          */
2845         if (CCC->redirect_buffer != NULL) {
2846                 CtdlLogPrintf(CTDL_ALERT, "CCC->redirect_buffer is not NULL during message submission!\n");
2847                 abort();
2848         }
2849         CCC->redirect_buffer = malloc(SIZ);
2850         CCC->redirect_len = 0;
2851         CCC->redirect_alloc = SIZ;
2852         CtdlOutputPreLoadedMsg(msg, MT_RFC822, HEADERS_ALL, 0, 1, QP_EADDR);
2853         smi.meta_rfc822_length = CCC->redirect_len;
2854         saved_rfc822_version = CCC->redirect_buffer;
2855         CCC->redirect_buffer = NULL;
2856         CCC->redirect_len = 0;
2857         CCC->redirect_alloc = 0;
2858
2859         PutMetaData(&smi);
2860
2861         /* Now figure out where to store the pointers */
2862         CtdlLogPrintf(CTDL_DEBUG, "Storing pointers\n");
2863
2864         /* If this is being done by the networker delivering a private
2865          * message, we want to BYPASS saving the sender's copy (because there
2866          * is no local sender; it would otherwise go to the Trashcan).
2867          */
2868         if ((!CCC->internal_pgm) || (recps == NULL)) {
2869                 if (CtdlSaveMsgPointerInRoom(actual_rm, newmsgid, 1, msg) != 0) {
2870                         CtdlLogPrintf(CTDL_ERR, "ERROR saving message pointer!\n");
2871                         CtdlSaveMsgPointerInRoom(config.c_aideroom, newmsgid, 0, msg);
2872                 }
2873         }
2874
2875         /* For internet mail, drop a copy in the outbound queue room */
2876         if ((recps != NULL) && (recps->num_internet > 0)) {
2877                 CtdlSaveMsgPointerInRoom(SMTP_SPOOLOUT_ROOM, newmsgid, 0, msg);
2878         }
2879
2880         /* If other rooms are specified, drop them there too. */
2881         if ((recps != NULL) && (recps->num_room > 0))
2882           for (i=0; i<num_tokens(recps->recp_room, '|'); ++i) {
2883                 extract_token(recipient, recps->recp_room, i,
2884                                         '|', sizeof recipient);
2885                 CtdlLogPrintf(CTDL_DEBUG, "Delivering to room <%s>\n", recipient);
2886                 CtdlSaveMsgPointerInRoom(recipient, newmsgid, 0, msg);
2887         }
2888
2889         /* Bump this user's messages posted counter. */
2890         CtdlLogPrintf(CTDL_DEBUG, "Updating user\n");
2891         lgetuser(&CCC->user, CCC->curr_user);
2892         CCC->user.posted = CCC->user.posted + 1;
2893         lputuser(&CCC->user);
2894
2895         /* Decide where bounces need to be delivered */
2896         if ((recps != NULL) && (recps->bounce_to != NULL)) {
2897                 safestrncpy(bounce_to, recps->bounce_to, sizeof bounce_to);
2898         }
2899         else if (CCC->logged_in) {
2900                 snprintf(bounce_to, sizeof bounce_to, "%s@%s", CCC->user.fullname, config.c_nodename);
2901         }
2902         else {
2903                 snprintf(bounce_to, sizeof bounce_to, "%s@%s", msg->cm_fields['A'], msg->cm_fields['N']);
2904         }
2905
2906         /* If this is private, local mail, make a copy in the
2907          * recipient's mailbox and bump the reference count.
2908          */
2909         if ((recps != NULL) && (recps->num_local > 0))
2910           for (i=0; i<num_tokens(recps->recp_local, '|'); ++i) {
2911                 extract_token(recipient, recps->recp_local, i,
2912                                         '|', sizeof recipient);
2913                 CtdlLogPrintf(CTDL_DEBUG, "Delivering private local mail to <%s>\n",
2914                         recipient);
2915                 if (getuser(&userbuf, recipient) == 0) {
2916                         // Add a flag so the Funambol module knows its mail
2917                         msg->cm_fields['W'] = strdup(recipient);
2918                         MailboxName(actual_rm, sizeof actual_rm, &userbuf, MAILROOM);
2919                         CtdlSaveMsgPointerInRoom(actual_rm, newmsgid, 0, msg);
2920                         BumpNewMailCounter(userbuf.usernum);
2921                         if (!IsEmptyStr(config.c_funambol_host) || !IsEmptyStr(config.c_pager_program)) {
2922                         /* Generate a instruction message for the Funambol notification
2923                          * server, in the same style as the SMTP queue
2924                          */
2925                            instr_alloc = 1024;
2926                            instr = malloc(instr_alloc);
2927                            snprintf(instr, instr_alloc,
2928                         "Content-type: %s\n\nmsgid|%ld\nsubmitted|%ld\n"
2929                         "bounceto|%s\n",
2930                         SPOOLMIME, newmsgid, (long)time(NULL),
2931                         bounce_to
2932                         );
2933
2934                            imsg = malloc(sizeof(struct CtdlMessage));
2935                            memset(imsg, 0, sizeof(struct CtdlMessage));
2936                            imsg->cm_magic = CTDLMESSAGE_MAGIC;
2937                            imsg->cm_anon_type = MES_NORMAL;
2938                            imsg->cm_format_type = FMT_RFC822;
2939                            imsg->cm_fields['A'] = strdup("Citadel");
2940                            imsg->cm_fields['J'] = strdup("do not journal");
2941                            imsg->cm_fields['M'] = instr;        /* imsg owns this memory now */
2942                            imsg->cm_fields['W'] = strdup(recipient);
2943                            CtdlSubmitMsg(imsg, NULL, FNBL_QUEUE_ROOM, 0);
2944                            CtdlFreeMessage(imsg);
2945                         }
2946                 }
2947                 else {
2948                         CtdlLogPrintf(CTDL_DEBUG, "No user <%s>\n", recipient);
2949                         CtdlSaveMsgPointerInRoom(config.c_aideroom,
2950                                 newmsgid, 0, msg);
2951                 }
2952         }
2953
2954         /* Perform "after save" hooks */
2955         CtdlLogPrintf(CTDL_DEBUG, "Performing after-save hooks\n");
2956         PerformMessageHooks(msg, EVT_AFTERSAVE);
2957
2958         /* For IGnet mail, we have to save a new copy into the spooler for
2959          * each recipient, with the R and D fields set to the recipient and
2960          * destination-node.  This has two ugly side effects: all other
2961          * recipients end up being unlisted in this recipient's copy of the
2962          * message, and it has to deliver multiple messages to the same
2963          * node.  We'll revisit this again in a year or so when everyone has
2964          * a network spool receiver that can handle the new style messages.
2965          */
2966         if ((recps != NULL) && (recps->num_ignet > 0))
2967           for (i=0; i<num_tokens(recps->recp_ignet, '|'); ++i) {
2968                 extract_token(recipient, recps->recp_ignet, i,
2969                                 '|', sizeof recipient);
2970
2971                 hold_R = msg->cm_fields['R'];
2972                 hold_D = msg->cm_fields['D'];
2973                 msg->cm_fields['R'] = malloc(SIZ);
2974                 msg->cm_fields['D'] = malloc(128);
2975                 extract_token(msg->cm_fields['R'], recipient, 0, '@', SIZ);
2976                 extract_token(msg->cm_fields['D'], recipient, 1, '@', 128);
2977
2978                 serialize_message(&smr, msg);
2979                 if (smr.len > 0) {
2980                         snprintf(submit_filename, sizeof submit_filename,
2981                                          "%s/netmail.%04lx.%04x.%04x",
2982                                          ctdl_netin_dir,
2983                                          (long) getpid(), CCC->cs_pid, ++seqnum);
2984                         network_fp = fopen(submit_filename, "wb+");
2985                         if (network_fp != NULL) {
2986                                 rv = fwrite(smr.ser, smr.len, 1, network_fp);
2987                                 fclose(network_fp);
2988                         }
2989                         free(smr.ser);
2990                 }
2991
2992                 free(msg->cm_fields['R']);
2993                 free(msg->cm_fields['D']);
2994                 msg->cm_fields['R'] = hold_R;
2995                 msg->cm_fields['D'] = hold_D;
2996         }
2997
2998         /* Go back to the room we started from */
2999         CtdlLogPrintf(CTDL_DEBUG, "Returning to original room %s\n", hold_rm);
3000         if (strcasecmp(hold_rm, CCC->room.QRname))
3001                 usergoto(hold_rm, 0, 1, NULL, NULL);
3002
3003         /* For internet mail, generate delivery instructions.
3004          * Yes, this is recursive.  Deal with it.  Infinite recursion does
3005          * not happen because the delivery instructions message does not
3006          * contain a recipient.
3007          */
3008         if ((recps != NULL) && (recps->num_internet > 0)) {
3009                 CtdlLogPrintf(CTDL_DEBUG, "Generating delivery instructions\n");
3010                 instr_alloc = 1024;
3011                 instr = malloc(instr_alloc);
3012                 snprintf(instr, instr_alloc,
3013                         "Content-type: %s\n\nmsgid|%ld\nsubmitted|%ld\n"
3014                         "bounceto|%s\n",
3015                         SPOOLMIME, newmsgid, (long)time(NULL),
3016                         bounce_to
3017                 );
3018
3019                 if (recps->envelope_from != NULL) {
3020                         tmp = strlen(instr);
3021                         snprintf(&instr[tmp], instr_alloc-tmp, "envelope_from|%s\n", recps->envelope_from);
3022                 }
3023
3024                 for (i=0; i<num_tokens(recps->recp_internet, '|'); ++i) {
3025                         tmp = strlen(instr);
3026                         extract_token(recipient, recps->recp_internet, i, '|', sizeof recipient);
3027                         if ((tmp + strlen(recipient) + 32) > instr_alloc) {
3028                                 instr_alloc = instr_alloc * 2;
3029                                 instr = realloc(instr, instr_alloc);
3030                         }
3031                         snprintf(&instr[tmp], instr_alloc - tmp, "remote|%s|0||\n", recipient);
3032                 }
3033
3034                 imsg = malloc(sizeof(struct CtdlMessage));
3035                 memset(imsg, 0, sizeof(struct CtdlMessage));
3036                 imsg->cm_magic = CTDLMESSAGE_MAGIC;
3037                 imsg->cm_anon_type = MES_NORMAL;
3038                 imsg->cm_format_type = FMT_RFC822;
3039                 imsg->cm_fields['A'] = strdup("Citadel");
3040                 imsg->cm_fields['J'] = strdup("do not journal");
3041                 imsg->cm_fields['M'] = instr;   /* imsg owns this memory now */
3042                 CtdlSubmitMsg(imsg, NULL, SMTP_SPOOLOUT_ROOM, QP_EADDR);
3043                 CtdlFreeMessage(imsg);
3044         }
3045
3046         /*
3047          * Any addresses to harvest for someone's address book?
3048          */
3049         if ( (CCC->logged_in) && (recps != NULL) ) {
3050                 collected_addresses = harvest_collected_addresses(msg);
3051         }
3052
3053         if (collected_addresses != NULL) {
3054                 aptr = (struct addresses_to_be_filed *)
3055                         malloc(sizeof(struct addresses_to_be_filed));
3056                 MailboxName(actual_rm, sizeof actual_rm,
3057                         &CCC->user, USERCONTACTSROOM);
3058                 aptr->roomname = strdup(actual_rm);
3059                 aptr->collected_addresses = collected_addresses;
3060                 begin_critical_section(S_ATBF);
3061                 aptr->next = atbf;
3062                 atbf = aptr;
3063                 end_critical_section(S_ATBF);
3064         }
3065
3066         /*
3067          * Determine whether this message qualifies for journaling.
3068          */
3069         if (msg->cm_fields['J'] != NULL) {
3070                 qualified_for_journaling = 0;
3071         }
3072         else {
3073                 if (recps == NULL) {
3074                         qualified_for_journaling = config.c_journal_pubmsgs;
3075                 }
3076                 else if (recps->num_local + recps->num_ignet + recps->num_internet > 0) {
3077                         qualified_for_journaling = config.c_journal_email;
3078                 }
3079                 else {
3080                         qualified_for_journaling = config.c_journal_pubmsgs;
3081                 }
3082         }
3083
3084         /*
3085          * Do we have to perform journaling?  If so, hand off the saved
3086          * RFC822 version will be handed off to the journaler for background
3087          * submit.  Otherwise, we have to free the memory ourselves.
3088          */
3089         if (saved_rfc822_version != NULL) {
3090                 if (qualified_for_journaling) {
3091                         JournalBackgroundSubmit(msg, saved_rfc822_version, recps);
3092                 }
3093                 else {
3094                         free(saved_rfc822_version);
3095                 }
3096         }
3097
3098         /* Done. */
3099         return(newmsgid);
3100 }
3101
3102
3103
3104
3105
3106 /*
3107  * Convenience function for generating small administrative messages.
3108  */
3109 void quickie_message(const char *from, const char *fromaddr, char *to, char *room, const char *text,
3110                         int format_type, const char *subject)
3111 {
3112         struct CtdlMessage *msg;
3113         struct recptypes *recp = NULL;
3114
3115         msg = malloc(sizeof(struct CtdlMessage));
3116         memset(msg, 0, sizeof(struct CtdlMessage));
3117         msg->cm_magic = CTDLMESSAGE_MAGIC;
3118         msg->cm_anon_type = MES_NORMAL;
3119         msg->cm_format_type = format_type;
3120
3121         if (from != NULL) {
3122                 msg->cm_fields['A'] = strdup(from);
3123         }
3124         else if (fromaddr != NULL) {
3125                 msg->cm_fields['A'] = strdup(fromaddr);
3126                 if (strchr(msg->cm_fields['A'], '@')) {
3127                         *strchr(msg->cm_fields['A'], '@') = 0;
3128                 }
3129         }
3130         else {
3131                 msg->cm_fields['A'] = strdup("Citadel");
3132         }
3133
3134         if (fromaddr != NULL) msg->cm_fields['F'] = strdup(fromaddr);
3135         if (room != NULL) msg->cm_fields['O'] = strdup(room);
3136         msg->cm_fields['N'] = strdup(NODENAME);
3137         if (to != NULL) {
3138                 msg->cm_fields['R'] = strdup(to);
3139                 recp = validate_recipients(to, NULL, 0);
3140         }
3141         if (subject != NULL) {
3142                 msg->cm_fields['U'] = strdup(subject);
3143         }
3144         msg->cm_fields['M'] = strdup(text);
3145
3146         CtdlSubmitMsg(msg, recp, room, 0);
3147         CtdlFreeMessage(msg);
3148         if (recp != NULL) free_recipients(recp);
3149 }
3150
3151
3152
3153 /*
3154  * Back end function used by CtdlMakeMessage() and similar functions
3155  */
3156 char *CtdlReadMessageBody(char *terminator,     /* token signalling EOT */
3157                         size_t maxlen,          /* maximum message length */
3158                         char *exist,            /* if non-null, append to it;
3159                                                    exist is ALWAYS freed  */
3160                         int crlf,               /* CRLF newlines instead of LF */
3161                         int sock                /* socket handle or 0 for this session's client socket */
3162                         ) {
3163         char buf[1024];
3164         int linelen;
3165         size_t message_len = 0;
3166         size_t buffer_len = 0;
3167         char *ptr;
3168         char *m;
3169         int flushing = 0;
3170         int finished = 0;
3171         int dotdot = 0;
3172
3173         if (exist == NULL) {
3174                 m = malloc(4096);
3175                 m[0] = 0;
3176                 buffer_len = 4096;
3177                 message_len = 0;
3178         }
3179         else {
3180                 message_len = strlen(exist);
3181                 buffer_len = message_len + 4096;
3182                 m = realloc(exist, buffer_len);
3183                 if (m == NULL) {
3184                         free(exist);
3185                         return m;
3186                 }
3187         }
3188
3189         /* Do we need to change leading ".." to "." for SMTP escaping? */
3190         if (!strcmp(terminator, ".")) {
3191                 dotdot = 1;
3192         }
3193
3194         /* flush the input if we have nowhere to store it */
3195         if (m == NULL) {
3196                 flushing = 1;
3197         }
3198
3199         /* read in the lines of message text one by one */
3200         do {
3201                 if (sock > 0) {
3202                         if (sock_getln(sock, buf, (sizeof buf - 3)) < 0) finished = 1;
3203                 }
3204                 else {
3205                         if (client_getln(buf, (sizeof buf - 3)) < 1) finished = 1;
3206                 }
3207                 if (!strcmp(buf, terminator)) finished = 1;
3208                 if (crlf) {
3209                         strcat(buf, "\r\n");
3210                 }
3211                 else {
3212                         strcat(buf, "\n");
3213                 }
3214
3215                 /* Unescape SMTP-style input of two dots at the beginning of the line */
3216                 if (dotdot) {
3217                         if (!strncmp(buf, "..", 2)) {
3218                                 strcpy(buf, &buf[1]);
3219                         }
3220                 }
3221
3222                 if ( (!flushing) && (!finished) ) {
3223                         /* Measure the line */
3224                         linelen = strlen(buf);
3225
3226                         /* augment the buffer if we have to */
3227                         if ((message_len + linelen) >= buffer_len) {
3228                                 ptr = realloc(m, (buffer_len * 2) );
3229                                 if (ptr == NULL) {      /* flush if can't allocate */
3230                                         flushing = 1;
3231                                 } else {
3232                                         buffer_len = (buffer_len * 2);
3233                                         m = ptr;
3234                                         CtdlLogPrintf(CTDL_DEBUG, "buffer_len is now %ld\n", (long)buffer_len);
3235                                 }
3236                         }
3237
3238                         /* Add the new line to the buffer.  NOTE: this loop must avoid
3239                         * using functions like strcat() and strlen() because they
3240                         * traverse the entire buffer upon every call, and doing that
3241                         * for a multi-megabyte message slows it down beyond usability.
3242                         */
3243                         strcpy(&m[message_len], buf);
3244                         message_len += linelen;
3245                 }
3246
3247                 /* if we've hit the max msg length, flush the rest */
3248                 if (message_len >= maxlen) flushing = 1;
3249
3250         } while (!finished);
3251         return(m);
3252 }
3253
3254
3255
3256
3257 /*
3258  * Build a binary message to be saved on disk.
3259  * (NOTE: if you supply 'preformatted_text', the buffer you give it
3260  * will become part of the message.  This means you are no longer
3261  * responsible for managing that memory -- it will be freed along with
3262  * the rest of the fields when CtdlFreeMessage() is called.)
3263  */
3264
3265 struct CtdlMessage *CtdlMakeMessage(
3266         struct ctdluser *author,        /* author's user structure */
3267         char *recipient,                /* NULL if it's not mail */
3268         char *recp_cc,                  /* NULL if it's not mail */
3269         char *room,                     /* room where it's going */
3270         int type,                       /* see MES_ types in header file */
3271         int format_type,                /* variformat, plain text, MIME... */
3272         char *fake_name,                /* who we're masquerading as */
3273         char *my_email,                 /* which of my email addresses to use (empty is ok) */
3274         char *subject,                  /* Subject (optional) */
3275         char *supplied_euid,            /* ...or NULL if this is irrelevant */
3276         char *preformatted_text,        /* ...or NULL to read text from client */
3277         char *references                /* Thread references */
3278 ) {
3279         char dest_node[256];
3280         char buf[1024];
3281         struct CtdlMessage *msg;
3282
3283         msg = malloc(sizeof(struct CtdlMessage));
3284         memset(msg, 0, sizeof(struct CtdlMessage));
3285         msg->cm_magic = CTDLMESSAGE_MAGIC;
3286         msg->cm_anon_type = type;
3287         msg->cm_format_type = format_type;
3288
3289         /* Don't confuse the poor folks if it's not routed mail. */
3290         strcpy(dest_node, "");
3291
3292         if (recipient != NULL) striplt(recipient);
3293         if (recp_cc != NULL) striplt(recp_cc);
3294
3295         /* Path or Return-Path */
3296         if (my_email == NULL) my_email = "";
3297
3298         if (!IsEmptyStr(my_email)) {
3299                 msg->cm_fields['P'] = strdup(my_email);
3300         }
3301         else {
3302                 snprintf(buf, sizeof buf, "%s", author->fullname);
3303                 msg->cm_fields['P'] = strdup(buf);
3304         }
3305         convert_spaces_to_underscores(msg->cm_fields['P']);
3306
3307         snprintf(buf, sizeof buf, "%ld", (long)time(NULL));     /* timestamp */
3308         msg->cm_fields['T'] = strdup(buf);
3309
3310         if ((fake_name != NULL) && (fake_name[0])) {            /* author */
3311                 msg->cm_fields['A'] = strdup(fake_name);
3312         }
3313         else {
3314                 msg->cm_fields['A'] = strdup(author->fullname);
3315         }
3316
3317         if (CC->room.QRflags & QR_MAILBOX) {            /* room */
3318                 msg->cm_fields['O'] = strdup(&CC->room.QRname[11]);
3319         }
3320         else {
3321                 msg->cm_fields['O'] = strdup(CC->room.QRname);
3322         }
3323
3324         msg->cm_fields['N'] = strdup(NODENAME);         /* nodename */
3325         msg->cm_fields['H'] = strdup(HUMANNODE);                /* hnodename */
3326
3327         if ((recipient != NULL) && (recipient[0] != 0)) {
3328                 msg->cm_fields['R'] = strdup(recipient);
3329         }
3330         if ((recp_cc != NULL) && (recp_cc[0] != 0)) {
3331                 msg->cm_fields['Y'] = strdup(recp_cc);
3332         }
3333         if (dest_node[0] != 0) {
3334                 msg->cm_fields['D'] = strdup(dest_node);
3335         }
3336
3337         if (!IsEmptyStr(my_email)) {
3338                 msg->cm_fields['F'] = strdup(my_email);
3339         }
3340         else if ( (author == &CC->user) && (!IsEmptyStr(CC->cs_inet_email)) ) {
3341                 msg->cm_fields['F'] = strdup(CC->cs_inet_email);
3342         }
3343
3344         if (subject != NULL) {
3345                 long length;
3346                 striplt(subject);
3347                 length = strlen(subject);
3348                 if (length > 0) {
3349                         long i;
3350                         long IsAscii;
3351                         IsAscii = -1;
3352                         i = 0;
3353                         while ((subject[i] != '\0') &&
3354                                (IsAscii = isascii(subject[i]) != 0 ))
3355                                 i++;
3356                         if (IsAscii != 0)
3357                                 msg->cm_fields['U'] = strdup(subject);
3358                         else /* ok, we've got utf8 in the string. */
3359                         {
3360                                 msg->cm_fields['U'] = rfc2047encode(subject, length);
3361                         }
3362
3363                 }
3364         }
3365
3366         if (supplied_euid != NULL) {
3367                 msg->cm_fields['E'] = strdup(supplied_euid);
3368         }
3369
3370         if (references != NULL) {
3371                 if (!IsEmptyStr(references)) {
3372                         msg->cm_fields['W'] = strdup(references);
3373                 }
3374         }
3375
3376         if (preformatted_text != NULL) {
3377                 msg->cm_fields['M'] = preformatted_text;
3378         }
3379         else {
3380                 msg->cm_fields['M'] = CtdlReadMessageBody("000", config.c_maxmsglen, NULL, 0, 0);
3381         }
3382
3383         return(msg);
3384 }
3385
3386
3387 /*
3388  * Check to see whether we have permission to post a message in the current
3389  * room.  Returns a *CITADEL ERROR CODE* and puts a message in errmsgbuf, or
3390  * returns 0 on success.
3391  */
3392 int CtdlDoIHavePermissionToPostInThisRoom(char *errmsgbuf,
3393                                           size_t n,
3394                                           const char* RemoteIdentifier,
3395                                           int PostPublic) {
3396         int ra;
3397
3398         if (!(CC->logged_in) &&
3399             (PostPublic == POST_LOGGED_IN)) {
3400                 snprintf(errmsgbuf, n, "Not logged in.");
3401                 return (ERROR + NOT_LOGGED_IN);
3402         }
3403         else if (PostPublic == CHECK_EXISTANCE) {
3404                 return (0); // We're Evaling whether a recipient exists
3405         }
3406         else if (!(CC->logged_in)) {
3407
3408                 if ((CC->room.QRflags & QR_READONLY)) {
3409                         snprintf(errmsgbuf, n, "Not logged in.");
3410                         return (ERROR + NOT_LOGGED_IN);
3411                 }
3412                 if (CC->room.QRflags2 & QR2_MODERATED) {
3413                         snprintf(errmsgbuf, n, "Not logged in Moderation feature not yet implemented!");
3414                         return (ERROR + NOT_LOGGED_IN);
3415                 }
3416                 if ((PostPublic!=POST_LMTP) &&(CC->room.QRflags2 & QR2_SMTP_PUBLIC) == 0) {
3417                         SpoolControl *sc;
3418                         char filename[SIZ];
3419                         int found;
3420
3421                         if (RemoteIdentifier == NULL)
3422                         {
3423                                 snprintf(errmsgbuf, n, "Need sender to permit access.");
3424                                 return (ERROR + USERNAME_REQUIRED);
3425                         }
3426
3427                         assoc_file_name(filename, sizeof filename, &CC->room, ctdl_netcfg_dir);
3428                         begin_critical_section(S_NETCONFIGS);
3429                         if (!read_spoolcontrol_file(&sc, filename))
3430                         {
3431                                 end_critical_section(S_NETCONFIGS);
3432                                 snprintf(errmsgbuf, n,
3433                                         "This mailing list only accepts posts from subscribers.");
3434                                 return (ERROR + NO_SUCH_USER);
3435                         }
3436                         end_critical_section(S_NETCONFIGS);
3437                         found = is_recipient (sc, RemoteIdentifier);
3438                         free_spoolcontrol_struct(&sc);
3439                         if (found) {
3440                                 return (0);
3441                         }
3442                         else {
3443                                 snprintf(errmsgbuf, n,
3444                                         "This mailing list only accepts posts from subscribers.");
3445                                 return (ERROR + NO_SUCH_USER);
3446                         }
3447                 }
3448                 return (0);
3449
3450         }
3451
3452         if ((CC->user.axlevel < 2)
3453             && ((CC->room.QRflags & QR_MAILBOX) == 0)) {
3454                 snprintf(errmsgbuf, n, "Need to be validated to enter "
3455                                 "(except in %s> to sysop)", MAILROOM);
3456                 return (ERROR + HIGHER_ACCESS_REQUIRED);
3457         }
3458
3459         CtdlRoomAccess(&CC->room, &CC->user, &ra, NULL);
3460         if (!(ra & UA_POSTALLOWED)) {
3461                 snprintf(errmsgbuf, n, "Higher access is required to post in this room.");
3462                 return (ERROR + HIGHER_ACCESS_REQUIRED);
3463         }
3464
3465         strcpy(errmsgbuf, "Ok");
3466         return(0);
3467 }
3468
3469
3470 /*
3471  * Check to see if the specified user has Internet mail permission
3472  * (returns nonzero if permission is granted)
3473  */
3474 int CtdlCheckInternetMailPermission(struct ctdluser *who) {
3475
3476         /* Do not allow twits to send Internet mail */
3477         if (who->axlevel <= 2) return(0);
3478
3479         /* Globally enabled? */
3480         if (config.c_restrict == 0) return(1);
3481
3482         /* User flagged ok? */
3483         if (who->flags & US_INTERNET) return(2);
3484
3485         /* Aide level access? */
3486         if (who->axlevel >= 6) return(3);
3487
3488         /* No mail for you! */
3489         return(0);
3490 }
3491
3492
3493 /*
3494  * Validate recipients, count delivery types and errors, and handle aliasing
3495  * FIXME check for dupes!!!!!
3496  *
3497  * Returns 0 if all addresses are ok, ret->num_error = -1 if no addresses
3498  * were specified, or the number of addresses found invalid.
3499  *
3500  * Caller needs to free the result using free_recipients()
3501  */
3502 struct recptypes *validate_recipients(char *supplied_recipients,
3503                                       const char *RemoteIdentifier,
3504                                       int Flags) {
3505         struct recptypes *ret;
3506         char *recipients = NULL;
3507         char this_recp[256];
3508         char this_recp_cooked[256];
3509         char append[SIZ];
3510         int num_recps = 0;
3511         int i, j;
3512         int mailtype;
3513         int invalid;
3514         struct ctdluser tempUS;
3515         struct ctdlroom tempQR;
3516         struct ctdlroom tempQR2;
3517         int err = 0;
3518         char errmsg[SIZ];
3519         int in_quotes = 0;
3520
3521         /* Initialize */
3522         ret = (struct recptypes *) malloc(sizeof(struct recptypes));
3523         if (ret == NULL) return(NULL);
3524
3525         /* Set all strings to null and numeric values to zero */
3526         memset(ret, 0, sizeof(struct recptypes));
3527
3528         if (supplied_recipients == NULL) {
3529                 recipients = strdup("");
3530         }
3531         else {
3532                 recipients = strdup(supplied_recipients);
3533         }
3534
3535         /* Allocate some memory.  Yes, this allocates 500% more memory than we will
3536          * actually need, but it's healthier for the heap than doing lots of tiny
3537          * realloc() calls instead.
3538          */
3539
3540         ret->errormsg = malloc(strlen(recipients) + 1024);
3541         ret->recp_local = malloc(strlen(recipients) + 1024);
3542         ret->recp_internet = malloc(strlen(recipients) + 1024);
3543         ret->recp_ignet = malloc(strlen(recipients) + 1024);
3544         ret->recp_room = malloc(strlen(recipients) + 1024);
3545         ret->display_recp = malloc(strlen(recipients) + 1024);
3546
3547         ret->errormsg[0] = 0;
3548         ret->recp_local[0] = 0;
3549         ret->recp_internet[0] = 0;
3550         ret->recp_ignet[0] = 0;
3551         ret->recp_room[0] = 0;
3552         ret->display_recp[0] = 0;
3553
3554         ret->recptypes_magic = RECPTYPES_MAGIC;
3555
3556         /* Change all valid separator characters to commas */
3557         for (i=0; !IsEmptyStr(&recipients[i]); ++i) {
3558                 if ((recipients[i] == ';') || (recipients[i] == '|')) {
3559                         recipients[i] = ',';
3560                 }
3561         }
3562
3563         /* Now start extracting recipients... */
3564
3565         while (!IsEmptyStr(recipients)) {
3566
3567                 for (i=0; i<=strlen(recipients); ++i) {
3568                         if (recipients[i] == '\"') in_quotes = 1 - in_quotes;
3569                         if ( ( (recipients[i] == ',') && (!in_quotes) ) || (recipients[i] == 0) ) {
3570                                 safestrncpy(this_recp, recipients, i+1);
3571                                 this_recp[i] = 0;
3572                                 if (recipients[i] == ',') {
3573                                         strcpy(recipients, &recipients[i+1]);
3574                                 }
3575                                 else {
3576                                         strcpy(recipients, "");
3577                                 }
3578                                 break;
3579                         }
3580                 }
3581
3582                 striplt(this_recp);
3583                 if (IsEmptyStr(this_recp))
3584                         break;
3585                 CtdlLogPrintf(CTDL_DEBUG, "Evaluating recipient #%d: %s\n", num_recps, this_recp);
3586                 ++num_recps;
3587                 mailtype = alias(this_recp);
3588                 mailtype = alias(this_recp);
3589                 mailtype = alias(this_recp);
3590                 j = 0;
3591                 for (j=0; !IsEmptyStr(&this_recp[j]); ++j) {
3592                         if (this_recp[j]=='_') {
3593                                 this_recp_cooked[j] = ' ';
3594                         }
3595                         else {
3596                                 this_recp_cooked[j] = this_recp[j];
3597                         }
3598                 }
3599                 this_recp_cooked[j] = '\0';
3600                 invalid = 0;
3601                 errmsg[0] = 0;
3602                 switch(mailtype) {
3603                         case MES_LOCAL:
3604                                 if (!strcasecmp(this_recp, "sysop")) {
3605                                         ++ret->num_room;
3606                                         strcpy(this_recp, config.c_aideroom);
3607                                         if (!IsEmptyStr(ret->recp_room)) {
3608                                                 strcat(ret->recp_room, "|");
3609                                         }
3610                                         strcat(ret->recp_room, this_recp);
3611                                 }
3612                                 else if ( (!strncasecmp(this_recp, "room_", 5))
3613                                       && (!getroom(&tempQR, &this_recp_cooked[5])) ) {
3614
3615                                         /* Save room so we can restore it later */
3616                                         tempQR2 = CC->room;
3617                                         CC->room = tempQR;
3618
3619                                         /* Check permissions to send mail to this room */
3620                                         err = CtdlDoIHavePermissionToPostInThisRoom(errmsg,
3621                                                                                     sizeof errmsg,
3622                                                                                     RemoteIdentifier,
3623                                                                                     Flags
3624                                         );
3625                                         if (err)
3626                                         {
3627                                                 ++ret->num_error;
3628                                                 invalid = 1;
3629                                         }
3630                                         else {
3631                                                 ++ret->num_room;
3632                                                 if (!IsEmptyStr(ret->recp_room)) {
3633                                                         strcat(ret->recp_room, "|");
3634                                                 }
3635                                                 strcat(ret->recp_room, &this_recp_cooked[5]);
3636                                         }
3637
3638                                         /* Restore room in case something needs it */
3639                                         CC->room = tempQR2;
3640
3641                                 }
3642                                 else if (getuser(&tempUS, this_recp) == 0) {
3643                                         ++ret->num_local;
3644                                         strcpy(this_recp, tempUS.fullname);
3645                                         if (!IsEmptyStr(ret->recp_local)) {
3646                                                 strcat(ret->recp_local, "|");
3647                                         }
3648                                         strcat(ret->recp_local, this_recp);
3649                                 }
3650                                 else if (getuser(&tempUS, this_recp_cooked) == 0) {
3651                                         ++ret->num_local;
3652                                         strcpy(this_recp, tempUS.fullname);
3653                                         if (!IsEmptyStr(ret->recp_local)) {
3654                                                 strcat(ret->recp_local, "|");
3655                                         }
3656                                         strcat(ret->recp_local, this_recp);
3657                                 }
3658                                 else {
3659                                         ++ret->num_error;
3660                                         invalid = 1;
3661                                 }
3662                                 break;
3663                         case MES_INTERNET:
3664                                 /* Yes, you're reading this correctly: if the target
3665                                  * domain points back to the local system or an attached
3666                                  * Citadel directory, the address is invalid.  That's
3667                                  * because if the address were valid, we would have
3668                                  * already translated it to a local address by now.
3669                                  */
3670                                 if (IsDirectory(this_recp, 0)) {
3671                                         ++ret->num_error;
3672                                         invalid = 1;
3673                                 }
3674                                 else {
3675                                         ++ret->num_internet;
3676                                         if (!IsEmptyStr(ret->recp_internet)) {
3677                                                 strcat(ret->recp_internet, "|");
3678                                         }
3679                                         strcat(ret->recp_internet, this_recp);
3680                                 }
3681                                 break;
3682                         case MES_IGNET:
3683                                 ++ret->num_ignet;
3684                                 if (!IsEmptyStr(ret->recp_ignet)) {
3685                                         strcat(ret->recp_ignet, "|");
3686                                 }
3687                                 strcat(ret->recp_ignet, this_recp);
3688                                 break;
3689                         case MES_ERROR:
3690                                 ++ret->num_error;
3691                                 invalid = 1;
3692                                 break;
3693                 }
3694                 if (invalid) {
3695                         if (IsEmptyStr(errmsg)) {
3696                                 snprintf(append, sizeof append, "Invalid recipient: %s", this_recp);
3697                         }
3698                         else {
3699                                 snprintf(append, sizeof append, "%s", errmsg);
3700                         }
3701                         if ( (strlen(ret->errormsg) + strlen(append) + 3) < SIZ) {
3702                                 if (!IsEmptyStr(ret->errormsg)) {
3703                                         strcat(ret->errormsg, "; ");
3704                                 }
3705                                 strcat(ret->errormsg, append);
3706                         }
3707                 }
3708                 else {
3709                         if (IsEmptyStr(ret->display_recp)) {
3710                                 strcpy(append, this_recp);
3711                         }
3712                         else {
3713                                 snprintf(append, sizeof append, ", %s", this_recp);
3714                         }
3715                         if ( (strlen(ret->display_recp)+strlen(append)) < SIZ) {
3716                                 strcat(ret->display_recp, append);
3717                         }
3718                 }
3719         }
3720
3721         if ((ret->num_local + ret->num_internet + ret->num_ignet +
3722            ret->num_room + ret->num_error) == 0) {
3723                 ret->num_error = (-1);
3724                 strcpy(ret->errormsg, "No recipients specified.");
3725         }
3726
3727         CtdlLogPrintf(CTDL_DEBUG, "validate_recipients()\n");
3728         CtdlLogPrintf(CTDL_DEBUG, " local: %d <%s>\n", ret->num_local, ret->recp_local);
3729         CtdlLogPrintf(CTDL_DEBUG, "  room: %d <%s>\n", ret->num_room, ret->recp_room);
3730         CtdlLogPrintf(CTDL_DEBUG, "  inet: %d <%s>\n", ret->num_internet, ret->recp_internet);
3731         CtdlLogPrintf(CTDL_DEBUG, " ignet: %d <%s>\n", ret->num_ignet, ret->recp_ignet);
3732         CtdlLogPrintf(CTDL_DEBUG, " error: %d <%s>\n", ret->num_error, ret->errormsg);
3733
3734         free(recipients);
3735         return(ret);
3736 }
3737
3738
3739 /*
3740  * Destructor for struct recptypes
3741  */
3742 void free_recipients(struct recptypes *valid) {
3743
3744         if (valid == NULL) {
3745                 return;
3746         }
3747
3748         if (valid->recptypes_magic != RECPTYPES_MAGIC) {
3749                 CtdlLogPrintf(CTDL_EMERG, "Attempt to call free_recipients() on some other data type!\n");
3750                 abort();
3751         }
3752
3753         if (valid->errormsg != NULL)            free(valid->errormsg);
3754         if (valid->recp_local != NULL)          free(valid->recp_local);
3755         if (valid->recp_internet != NULL)       free(valid->recp_internet);
3756         if (valid->recp_ignet != NULL)          free(valid->recp_ignet);
3757         if (valid->recp_room != NULL)           free(valid->recp_room);
3758         if (valid->display_recp != NULL)        free(valid->display_recp);
3759         if (valid->bounce_to != NULL)           free(valid->bounce_to);
3760         if (valid->envelope_from != NULL)       free(valid->envelope_from);
3761         free(valid);
3762 }
3763
3764
3765
3766 /*
3767  * message entry  -  mode 0 (normal)
3768  */
3769 void cmd_ent0(char *entargs)
3770 {
3771         int post = 0;
3772         char recp[SIZ];
3773         char cc[SIZ];
3774         char bcc[SIZ];
3775         char supplied_euid[128];
3776         int anon_flag = 0;
3777         int format_type = 0;
3778         char newusername[256];
3779         char newuseremail[256];
3780         struct CtdlMessage *msg;
3781         int anonymous = 0;
3782         char errmsg[SIZ];
3783         int err = 0;
3784         struct recptypes *valid = NULL;
3785         struct recptypes *valid_to = NULL;
3786         struct recptypes *valid_cc = NULL;
3787         struct recptypes *valid_bcc = NULL;
3788         char subject[SIZ];
3789         int subject_required = 0;
3790         int do_confirm = 0;
3791         long msgnum;
3792         int i, j;
3793         char buf[256];
3794         int newuseremail_ok = 0;
3795         char references[SIZ];
3796         char *ptr;
3797
3798         unbuffer_output();
3799
3800         post = extract_int(entargs, 0);
3801         extract_token(recp, entargs, 1, '|', sizeof recp);
3802         anon_flag = extract_int(entargs, 2);
3803         format_type = extract_int(entargs, 3);
3804         extract_token(subject, entargs, 4, '|', sizeof subject);
3805         extract_token(newusername, entargs, 5, '|', sizeof newusername);
3806         do_confirm = extract_int(entargs, 6);
3807         extract_token(cc, entargs, 7, '|', sizeof cc);
3808         extract_token(bcc, entargs, 8, '|', sizeof bcc);
3809         switch(CC->room.QRdefaultview) {
3810                 case VIEW_NOTES:
3811                 case VIEW_WIKI:
3812                         extract_token(supplied_euid, entargs, 9, '|', sizeof supplied_euid);
3813                         break;
3814                 default:
3815                         supplied_euid[0] = 0;
3816                         break;
3817         }
3818         extract_token(newuseremail, entargs, 10, '|', sizeof newuseremail);
3819         extract_token(references, entargs, 11, '|', sizeof references);
3820         for (ptr=references; *ptr != 0; ++ptr) {
3821                 if (*ptr == '!') *ptr = '|';
3822         }
3823
3824         /* first check to make sure the request is valid. */
3825
3826         err = CtdlDoIHavePermissionToPostInThisRoom(errmsg, sizeof errmsg, NULL, POST_LOGGED_IN);
3827         if (err)
3828         {
3829                 cprintf("%d %s\n", err, errmsg);
3830                 return;
3831         }
3832
3833         /* Check some other permission type things. */
3834
3835         if (IsEmptyStr(newusername)) {
3836                 strcpy(newusername, CC->user.fullname);
3837         }
3838         if (  (CC->user.axlevel < 6)
3839            && (strcasecmp(newusername, CC->user.fullname))
3840            && (strcasecmp(newusername, CC->cs_inet_fn))
3841         ) {
3842                 cprintf("%d You don't have permission to author messages as '%s'.\n",
3843                         ERROR + HIGHER_ACCESS_REQUIRED,
3844                         newusername
3845                 );
3846                 return;
3847         }
3848
3849
3850         if (IsEmptyStr(newuseremail)) {
3851                 newuseremail_ok = 1;
3852         }
3853
3854         if (!IsEmptyStr(newuseremail)) {
3855                 if (!strcasecmp(newuseremail, CC->cs_inet_email)) {
3856                         newuseremail_ok = 1;
3857                 }
3858                 else if (!IsEmptyStr(CC->cs_inet_other_emails)) {
3859                         j = num_tokens(CC->cs_inet_other_emails, '|');
3860                         for (i=0; i<j; ++i) {
3861                                 extract_token(buf, CC->cs_inet_other_emails, i, '|', sizeof buf);
3862                                 if (!strcasecmp(newuseremail, buf)) {
3863                                         newuseremail_ok = 1;
3864                                 }
3865                         }
3866                 }
3867         }
3868
3869         if (!newuseremail_ok) {
3870                 cprintf("%d You don't have permission to author messages as '%s'.\n",
3871                         ERROR + HIGHER_ACCESS_REQUIRED,
3872                         newuseremail
3873                 );
3874                 return;
3875         }
3876
3877         CC->cs_flags |= CS_POSTING;
3878
3879         /* In mailbox rooms we have to behave a little differently --
3880          * make sure the user has specified at least one recipient.  Then
3881          * validate the recipient(s).  We do this for the Mail> room, as
3882          * well as any room which has the "Mailbox" view set.
3883          */
3884
3885         if (  ( (CC->room.QRflags & QR_MAILBOX) && (!strcasecmp(&CC->room.QRname[11], MAILROOM)) )
3886            || ( (CC->room.QRflags & QR_MAILBOX) && (CC->curr_view == VIEW_MAILBOX) )
3887         ) {
3888                 if (CC->user.axlevel < 2) {
3889                         strcpy(recp, "sysop");
3890                         strcpy(cc, "");
3891                         strcpy(bcc, "");
3892                 }
3893
3894                 valid_to = validate_recipients(recp, NULL, 0);
3895                 if (valid_to->num_error > 0) {
3896                         cprintf("%d %s\n", ERROR + NO_SUCH_USER, valid_to->errormsg);
3897                         free_recipients(valid_to);
3898                         return;
3899                 }
3900
3901                 valid_cc = validate_recipients(cc, NULL, 0);
3902                 if (valid_cc->num_error > 0) {
3903                         cprintf("%d %s\n", ERROR + NO_SUCH_USER, valid_cc->errormsg);
3904                         free_recipients(valid_to);
3905                         free_recipients(valid_cc);
3906                         return;
3907                 }
3908
3909                 valid_bcc = validate_recipients(bcc, NULL, 0);
3910                 if (valid_bcc->num_error > 0) {
3911                         cprintf("%d %s\n", ERROR + NO_SUCH_USER, valid_bcc->errormsg);
3912                         free_recipients(valid_to);
3913                         free_recipients(valid_cc);
3914                         free_recipients(valid_bcc);
3915                         return;
3916                 }
3917
3918                 /* Recipient required, but none were specified */
3919                 if ( (valid_to->num_error < 0) && (valid_cc->num_error < 0) && (valid_bcc->num_error < 0) ) {
3920                         free_recipients(valid_to);
3921                         free_recipients(valid_cc);
3922                         free_recipients(valid_bcc);
3923                         cprintf("%d At least one recipient is required.\n", ERROR + NO_SUCH_USER);
3924                         return;
3925                 }
3926
3927                 if (valid_to->num_internet + valid_cc->num_internet + valid_bcc->num_internet > 0) {
3928                         if (CtdlCheckInternetMailPermission(&CC->user)==0) {
3929                                 cprintf("%d You do not have permission "
3930                                         "to send Internet mail.\n",
3931                                         ERROR + HIGHER_ACCESS_REQUIRED);
3932                                 free_recipients(valid_to);
3933                                 free_recipients(valid_cc);
3934                                 free_recipients(valid_bcc);
3935                                 return;
3936                         }
3937                 }
3938
3939                 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)
3940                    && (CC->user.axlevel < 4) ) {
3941                         cprintf("%d Higher access required for network mail.\n",
3942                                 ERROR + HIGHER_ACCESS_REQUIRED);
3943                         free_recipients(valid_to);
3944                         free_recipients(valid_cc);
3945                         free_recipients(valid_bcc);
3946                         return;
3947                 }
3948
3949                 if ((RESTRICT_INTERNET == 1)
3950                     && (valid_to->num_internet + valid_cc->num_internet + valid_bcc->num_internet > 0)
3951                     && ((CC->user.flags & US_INTERNET) == 0)
3952                     && (!CC->internal_pgm)) {
3953                         cprintf("%d You don't have access to Internet mail.\n",
3954                                 ERROR + HIGHER_ACCESS_REQUIRED);
3955                         free_recipients(valid_to);
3956                         free_recipients(valid_cc);
3957                         free_recipients(valid_bcc);
3958                         return;
3959                 }
3960
3961         }
3962
3963         /* Is this a room which has anonymous-only or anonymous-option? */
3964         anonymous = MES_NORMAL;
3965         if (CC->room.QRflags & QR_ANONONLY) {
3966                 anonymous = MES_ANONONLY;
3967         }
3968         if (CC->room.QRflags & QR_ANONOPT) {
3969                 if (anon_flag == 1) {   /* only if the user requested it */
3970                         anonymous = MES_ANONOPT;
3971                 }
3972         }
3973
3974         if ((CC->room.QRflags & QR_MAILBOX) == 0) {
3975                 recp[0] = 0;
3976         }
3977
3978         /* Recommend to the client that the use of a message subject is
3979          * strongly recommended in this room, if either the SUBJECTREQ flag
3980          * is set, or if there is one or more Internet email recipients.
3981          */
3982         if (CC->room.QRflags2 & QR2_SUBJECTREQ) subject_required = 1;
3983         if ((valid_to)  && (valid_to->num_internet > 0))        subject_required = 1;
3984         if ((valid_cc)  && (valid_cc->num_internet > 0))        subject_required = 1;
3985         if ((valid_bcc) && (valid_bcc->num_internet > 0))       subject_required = 1;
3986
3987         /* If we're only checking the validity of the request, return
3988          * success without creating the message.
3989          */
3990         if (post == 0) {
3991                 cprintf("%d %s|%d\n", CIT_OK,
3992                         ((valid_to != NULL) ? valid_to->display_recp : ""),
3993                         subject_required);
3994                 free_recipients(valid_to);
3995                 free_recipients(valid_cc);
3996                 free_recipients(valid_bcc);
3997                 return;
3998         }
3999
4000         /* We don't need these anymore because we'll do it differently below */
4001         free_recipients(valid_to);
4002         free_recipients(valid_cc);
4003         free_recipients(valid_bcc);
4004
4005         /* Read in the message from the client. */
4006         if (do_confirm) {
4007                 cprintf("%d send message\n", START_CHAT_MODE);
4008         } else {
4009                 cprintf("%d send message\n", SEND_LISTING);
4010         }
4011
4012         msg = CtdlMakeMessage(&CC->user, recp, cc,
4013                 CC->room.QRname, anonymous, format_type,
4014                 newusername, newuseremail, subject,
4015                 ((!IsEmptyStr(supplied_euid)) ? supplied_euid : NULL),
4016                 NULL, references);
4017
4018         /* Put together one big recipients struct containing to/cc/bcc all in
4019          * one.  This is for the envelope.
4020          */
4021         char *all_recps = malloc(SIZ * 3);
4022         strcpy(all_recps, recp);
4023         if (!IsEmptyStr(cc)) {
4024                 if (!IsEmptyStr(all_recps)) {
4025                         strcat(all_recps, ",");
4026                 }
4027                 strcat(all_recps, cc);
4028         }
4029         if (!IsEmptyStr(bcc)) {
4030                 if (!IsEmptyStr(all_recps)) {
4031                         strcat(all_recps, ",");
4032                 }
4033                 strcat(all_recps, bcc);
4034         }
4035         if (!IsEmptyStr(all_recps)) {
4036                 valid = validate_recipients(all_recps, NULL, 0);
4037         }
4038         else {
4039                 valid = NULL;
4040         }
4041         free(all_recps);
4042
4043         if (msg != NULL) {
4044                 msgnum = CtdlSubmitMsg(msg, valid, "", QP_EADDR);
4045
4046                 if (do_confirm) {
4047                         cprintf("%ld\n", msgnum);
4048                         if (msgnum >= 0L) {
4049                                 cprintf("Message accepted.\n");
4050                         }
4051                         else {
4052                                 cprintf("Internal error.\n");
4053                         }
4054                         if (msg->cm_fields['E'] != NULL) {
4055                                 cprintf("%s\n", msg->cm_fields['E']);
4056                         } else {
4057                                 cprintf("\n");
4058                         }
4059                         cprintf("000\n");
4060                 }
4061
4062                 CtdlFreeMessage(msg);
4063         }
4064         if (valid != NULL) {
4065                 free_recipients(valid);
4066         }
4067         return;
4068 }
4069
4070
4071
4072 /*
4073  * API function to delete messages which match a set of criteria
4074  * (returns the actual number of messages deleted)
4075  */
4076 int CtdlDeleteMessages(char *room_name,         /* which room */
4077                         long *dmsgnums,         /* array of msg numbers to be deleted */
4078                         int num_dmsgnums,       /* number of msgs to be deleted, or 0 for "any" */
4079                         char *content_type      /* or "" for any.  regular expressions expected. */
4080 )
4081 {
4082         struct ctdlroom qrbuf;
4083         struct cdbdata *cdbfr;
4084         long *msglist = NULL;
4085         long *dellist = NULL;
4086         int num_msgs = 0;
4087         int i, j;
4088         int num_deleted = 0;
4089         int delete_this;
4090         struct MetaData smi;
4091         regex_t re;
4092         regmatch_t pm;
4093         int need_to_free_re = 0;
4094
4095         if (content_type) if (!IsEmptyStr(content_type)) {
4096                 regcomp(&re, content_type, 0);
4097                 need_to_free_re = 1;
4098         }
4099         CtdlLogPrintf(CTDL_DEBUG, "CtdlDeleteMessages(%s, %d msgs, %s)\n",
4100                 room_name, num_dmsgnums, content_type);
4101
4102         /* get room record, obtaining a lock... */
4103         if (lgetroom(&qrbuf, room_name) != 0) {
4104                 CtdlLogPrintf(CTDL_ERR, "CtdlDeleteMessages(): Room <%s> not found\n",
4105                         room_name);
4106                 if (need_to_free_re) regfree(&re);
4107                 return (0);     /* room not found */
4108         }
4109         cdbfr = cdb_fetch(CDB_MSGLISTS, &qrbuf.QRnumber, sizeof(long));
4110
4111         if (cdbfr != NULL) {
4112                 dellist = malloc(cdbfr->len);
4113                 msglist = (long *) cdbfr->ptr;
4114                 cdbfr->ptr = NULL;      /* CtdlDeleteMessages() now owns this memory */
4115                 num_msgs = cdbfr->len / sizeof(long);
4116                 cdb_free(cdbfr);
4117         }
4118         if (num_msgs > 0) {
4119                 for (i = 0; i < num_msgs; ++i) {
4120                         delete_this = 0x00;
4121
4122                         /* Set/clear a bit for each criterion */
4123
4124                         /* 0 messages in the list or a null list means that we are
4125                          * interested in deleting any messages which meet the other criteria.
4126                          */
4127                         if ((num_dmsgnums == 0) || (dmsgnums == NULL)) {
4128                                 delete_this |= 0x01;
4129                         }
4130                         else {
4131                                 for (j=0; j<num_dmsgnums; ++j) {
4132                                         if (msglist[i] == dmsgnums[j]) {
4133                                                 delete_this |= 0x01;
4134                                         }
4135                                 }
4136                         }
4137
4138                         if (IsEmptyStr(content_type)) {
4139                                 delete_this |= 0x02;
4140                         } else {
4141                                 GetMetaData(&smi, msglist[i]);
4142                                 if (regexec(&re, smi.meta_content_type, 1, &pm, 0) == 0) {
4143                                         delete_this |= 0x02;
4144                                 }
4145                         }
4146
4147                         /* Delete message only if all bits are set */
4148                         if (delete_this == 0x03) {
4149                                 dellist[num_deleted++] = msglist[i];
4150                                 msglist[i] = 0L;
4151                         }
4152                 }
4153
4154                 num_msgs = sort_msglist(msglist, num_msgs);
4155                 cdb_store(CDB_MSGLISTS, &qrbuf.QRnumber, (int)sizeof(long),
4156                           msglist, (int)(num_msgs * sizeof(long)));
4157
4158                 qrbuf.QRhighest = msglist[num_msgs - 1];
4159         }
4160         lputroom(&qrbuf);
4161
4162         /* Go through the messages we pulled out of the index, and decrement
4163          * their reference counts by 1.  If this is the only room the message
4164          * was in, the reference count will reach zero and the message will
4165          * automatically be deleted from the database.  We do this in a
4166          * separate pass because there might be plug-in hooks getting called,
4167          * and we don't want that happening during an S_ROOMS critical
4168          * section.
4169          */
4170         if (num_deleted) for (i=0; i<num_deleted; ++i) {
4171                 PerformDeleteHooks(qrbuf.QRname, dellist[i]);
4172                 AdjRefCount(dellist[i], -1);
4173         }
4174
4175         /* Now free the memory we used, and go away. */
4176         if (msglist != NULL) free(msglist);
4177         if (dellist != NULL) free(dellist);
4178         CtdlLogPrintf(CTDL_DEBUG, "%d message(s) deleted.\n", num_deleted);
4179         if (need_to_free_re) regfree(&re);
4180         return (num_deleted);
4181 }
4182
4183
4184
4185 /*
4186  * Check whether the current user has permission to delete messages from
4187  * the current room (returns 1 for yes, 0 for no)
4188  */
4189 int CtdlDoIHavePermissionToDeleteMessagesFromThisRoom(void) {
4190         int ra;
4191         CtdlRoomAccess(&CC->room, &CC->user, &ra, NULL);
4192         if (ra & UA_DELETEALLOWED) return(1);
4193         return(0);
4194 }
4195
4196
4197
4198
4199 /*
4200  * Delete message from current room
4201  */
4202 void cmd_dele(char *args)
4203 {
4204         int num_deleted;
4205         int i;
4206         char msgset[SIZ];
4207         char msgtok[32];
4208         long *msgs;
4209         int num_msgs = 0;
4210
4211         extract_token(msgset, args, 0, '|', sizeof msgset);
4212         num_msgs = num_tokens(msgset, ',');
4213         if (num_msgs < 1) {
4214                 cprintf("%d Nothing to do.\n", CIT_OK);
4215                 return;
4216         }
4217
4218         if (CtdlDoIHavePermissionToDeleteMessagesFromThisRoom() == 0) {
4219                 cprintf("%d Higher access required.\n",
4220                         ERROR + HIGHER_ACCESS_REQUIRED);
4221                 return;
4222         }
4223
4224         /*
4225          * Build our message set to be moved/copied
4226          */
4227         msgs = malloc(num_msgs * sizeof(long));
4228         for (i=0; i<num_msgs; ++i) {
4229                 extract_token(msgtok, msgset, i, ',', sizeof msgtok);
4230                 msgs[i] = atol(msgtok);
4231         }
4232
4233         num_deleted = CtdlDeleteMessages(CC->room.QRname, msgs, num_msgs, "");
4234         free(msgs);
4235
4236         if (num_deleted) {
4237                 cprintf("%d %d message%s deleted.\n", CIT_OK,
4238                         num_deleted, ((num_deleted != 1) ? "s" : ""));
4239         } else {
4240                 cprintf("%d Message not found.\n", ERROR + MESSAGE_NOT_FOUND);
4241         }
4242 }
4243
4244
4245
4246
4247 /*
4248  * move or copy a message to another room
4249  */
4250 void cmd_move(char *args)
4251 {
4252         char msgset[SIZ];
4253         char msgtok[32];
4254         long *msgs;
4255         int num_msgs = 0;
4256
4257         char targ[ROOMNAMELEN];
4258         struct ctdlroom qtemp;
4259         int err;
4260         int is_copy = 0;
4261         int ra;
4262         int permit = 0;
4263         int i;
4264
4265         extract_token(msgset, args, 0, '|', sizeof msgset);
4266         num_msgs = num_tokens(msgset, ',');
4267         if (num_msgs < 1) {
4268                 cprintf("%d Nothing to do.\n", CIT_OK);
4269                 return;
4270         }
4271
4272         extract_token(targ, args, 1, '|', sizeof targ);
4273         convert_room_name_macros(targ, sizeof targ);
4274         targ[ROOMNAMELEN - 1] = 0;
4275         is_copy = extract_int(args, 2);
4276
4277         if (getroom(&qtemp, targ) != 0) {
4278                 cprintf("%d '%s' does not exist.\n", ERROR + ROOM_NOT_FOUND, targ);
4279                 return;
4280         }
4281
4282         if (!strcasecmp(qtemp.QRname, CC->room.QRname)) {
4283                 cprintf("%d Source and target rooms are the same.\n", ERROR + ALREADY_EXISTS);
4284                 return;
4285         }
4286
4287         getuser(&CC->user, CC->curr_user);
4288         CtdlRoomAccess(&qtemp, &CC->user, &ra, NULL);
4289
4290         /* Check for permission to perform this operation.
4291          * Remember: "CC->room" is source, "qtemp" is target.
4292          */
4293         permit = 0;
4294
4295         /* Aides can move/copy */
4296         if (CC->user.axlevel >= 6) permit = 1;
4297
4298         /* Room aides can move/copy */
4299         if (CC->user.usernum == CC->room.QRroomaide) permit = 1;
4300
4301         /* Permit move/copy from personal rooms */
4302         if ((CC->room.QRflags & QR_MAILBOX)
4303            && (qtemp.QRflags & QR_MAILBOX)) permit = 1;
4304
4305         /* Permit only copy from public to personal room */
4306         if ( (is_copy)
4307            && (!(CC->room.QRflags & QR_MAILBOX))
4308            && (qtemp.QRflags & QR_MAILBOX)) permit = 1;
4309
4310         /* Permit message removal from collaborative delete rooms */
4311         if (CC->room.QRflags2 & QR2_COLLABDEL) permit = 1;
4312
4313         /* Users allowed to post into the target room may move into it too. */
4314         if ((CC->room.QRflags & QR_MAILBOX) &&
4315             (qtemp.QRflags & UA_POSTALLOWED))  permit = 1;
4316
4317         /* User must have access to target room */
4318         if (!(ra & UA_KNOWN))  permit = 0;
4319
4320         if (!permit) {
4321                 cprintf("%d Higher access required.\n",
4322                         ERROR + HIGHER_ACCESS_REQUIRED);
4323                 return;
4324         }
4325
4326         /*
4327          * Build our message set to be moved/copied
4328          */
4329         msgs = malloc(num_msgs * sizeof(long));
4330         for (i=0; i<num_msgs; ++i) {
4331                 extract_token(msgtok, msgset, i, ',', sizeof msgtok);
4332                 msgs[i] = atol(msgtok);
4333         }
4334
4335         /*
4336          * Do the copy
4337          */
4338         err = CtdlSaveMsgPointersInRoom(targ, msgs, num_msgs, 1, NULL);
4339         if (err != 0) {
4340                 cprintf("%d Cannot store message(s) in %s: error %d\n",
4341                         err, targ, err);
4342                 free(msgs);
4343                 return;
4344         }
4345
4346         /* Now delete the message from the source room,
4347          * if this is a 'move' rather than a 'copy' operation.
4348          */
4349         if (is_copy == 0) {
4350                 CtdlDeleteMessages(CC->room.QRname, msgs, num_msgs, "");
4351         }
4352         free(msgs);
4353
4354         cprintf("%d Message(s) %s.\n", CIT_OK, (is_copy ? "copied" : "moved") );
4355 }
4356
4357
4358
4359 /*
4360  * GetMetaData()  -  Get the supplementary record for a message
4361  */
4362 void GetMetaData(struct MetaData *smibuf, long msgnum)
4363 {
4364
4365         struct cdbdata *cdbsmi;
4366         long TheIndex;
4367
4368         memset(smibuf, 0, sizeof(struct MetaData));
4369         smibuf->meta_msgnum = msgnum;
4370         smibuf->meta_refcount = 1;      /* Default reference count is 1 */
4371
4372         /* Use the negative of the message number for its supp record index */
4373         TheIndex = (0L - msgnum);
4374
4375         cdbsmi = cdb_fetch(CDB_MSGMAIN, &TheIndex, sizeof(long));
4376         if (cdbsmi == NULL) {
4377                 return;         /* record not found; go with defaults */
4378         }
4379         memcpy(smibuf, cdbsmi->ptr,
4380                ((cdbsmi->len > sizeof(struct MetaData)) ?
4381                 sizeof(struct MetaData) : cdbsmi->len));
4382         cdb_free(cdbsmi);
4383         return;
4384 }
4385
4386
4387 /*
4388  * PutMetaData()  -  (re)write supplementary record for a message
4389  */
4390 void PutMetaData(struct MetaData *smibuf)
4391 {
4392         long TheIndex;
4393
4394         /* Use the negative of the message number for the metadata db index */
4395         TheIndex = (0L - smibuf->meta_msgnum);
4396
4397         cdb_store(CDB_MSGMAIN,
4398                   &TheIndex, (int)sizeof(long),
4399                   smibuf, (int)sizeof(struct MetaData));
4400
4401 }
4402
4403 /*
4404  * AdjRefCount  -  submit an adjustment to the reference count for a message.
4405  *                 (These are just queued -- we actually process them later.)
4406  */
4407 void AdjRefCount(long msgnum, int incr)
4408 {
4409         struct arcq new_arcq;
4410         int rv = 0;
4411
4412         begin_critical_section(S_SUPPMSGMAIN);
4413         if (arcfp == NULL) {
4414                 arcfp = fopen(file_arcq, "ab+");
4415         }
4416         end_critical_section(S_SUPPMSGMAIN);
4417
4418         /* msgnum < 0 means that we're trying to close the file */
4419         if (msgnum < 0) {
4420                 CtdlLogPrintf(CTDL_DEBUG, "Closing the AdjRefCount queue file\n");
4421                 begin_critical_section(S_SUPPMSGMAIN);
4422                 if (arcfp != NULL) {
4423                         fclose(arcfp);
4424                         arcfp = NULL;
4425                 }
4426                 end_critical_section(S_SUPPMSGMAIN);
4427                 return;
4428         }
4429
4430         /*
4431          * If we can't open the queue, perform the operation synchronously.
4432          */
4433         if (arcfp == NULL) {
4434                 TDAP_AdjRefCount(msgnum, incr);
4435                 return;
4436         }
4437
4438         new_arcq.arcq_msgnum = msgnum;
4439         new_arcq.arcq_delta = incr;
4440         rv = fwrite(&new_arcq, sizeof(struct arcq), 1, arcfp);
4441         fflush(arcfp);
4442
4443         return;
4444 }
4445
4446
4447 /*
4448  * TDAP_ProcessAdjRefCountQueue()
4449  *
4450  * Process the queue of message count adjustments that was created by calls
4451  * to AdjRefCount() ... by reading the queue and calling TDAP_AdjRefCount()
4452  * for each one.  This should be an "off hours" operation.
4453  */
4454 int TDAP_ProcessAdjRefCountQueue(void)
4455 {
4456         char file_arcq_temp[PATH_MAX];
4457         int r;
4458         FILE *fp;
4459         struct arcq arcq_rec;
4460         int num_records_processed = 0;
4461
4462         snprintf(file_arcq_temp, sizeof file_arcq_temp, "%s.%04x", file_arcq, rand());
4463
4464         begin_critical_section(S_SUPPMSGMAIN);
4465         if (arcfp != NULL) {
4466                 fclose(arcfp);
4467                 arcfp = NULL;
4468         }
4469
4470         r = link(file_arcq, file_arcq_temp);
4471         if (r != 0) {
4472                 CtdlLogPrintf(CTDL_CRIT, "%s: %s\n", file_arcq_temp, strerror(errno));
4473                 end_critical_section(S_SUPPMSGMAIN);
4474                 return(num_records_processed);
4475         }
4476
4477         unlink(file_arcq);
4478         end_critical_section(S_SUPPMSGMAIN);
4479
4480         fp = fopen(file_arcq_temp, "rb");
4481         if (fp == NULL) {
4482                 CtdlLogPrintf(CTDL_CRIT, "%s: %s\n", file_arcq_temp, strerror(errno));
4483                 return(num_records_processed);
4484         }
4485
4486         while (fread(&arcq_rec, sizeof(struct arcq), 1, fp) == 1) {
4487                 TDAP_AdjRefCount(arcq_rec.arcq_msgnum, arcq_rec.arcq_delta);
4488                 ++num_records_processed;
4489         }
4490
4491         fclose(fp);
4492         r = unlink(file_arcq_temp);
4493         if (r != 0) {
4494                 CtdlLogPrintf(CTDL_CRIT, "%s: %s\n", file_arcq_temp, strerror(errno));
4495         }
4496
4497         return(num_records_processed);
4498 }
4499
4500
4501
4502 /*
4503  * TDAP_AdjRefCount  -  adjust the reference count for a message.
4504  *                      This one does it "for real" because it's called by
4505  *                      the autopurger function that processes the queue
4506  *                      created by AdjRefCount().   If a message's reference
4507  *                      count becomes zero, we also delete the message from
4508  *                      disk and de-index it.
4509  */
4510 void TDAP_AdjRefCount(long msgnum, int incr)
4511 {
4512
4513         struct MetaData smi;
4514         long delnum;
4515
4516         /* This is a *tight* critical section; please keep it that way, as
4517          * it may get called while nested in other critical sections.
4518          * Complicating this any further will surely cause deadlock!
4519          */
4520         begin_critical_section(S_SUPPMSGMAIN);
4521         GetMetaData(&smi, msgnum);
4522         smi.meta_refcount += incr;
4523         PutMetaData(&smi);
4524         end_critical_section(S_SUPPMSGMAIN);
4525         CtdlLogPrintf(CTDL_DEBUG, "msg %ld ref count delta %+d, is now %d\n",
4526                 msgnum, incr, smi.meta_refcount);
4527
4528         /* If the reference count is now zero, delete the message
4529          * (and its supplementary record as well).
4530          */
4531         if (smi.meta_refcount == 0) {
4532                 CtdlLogPrintf(CTDL_DEBUG, "Deleting message <%ld>\n", msgnum);
4533
4534                 /* Call delete hooks with NULL room to show it has gone altogether */
4535                 PerformDeleteHooks(NULL, msgnum);
4536
4537                 /* Remove from message base */
4538                 delnum = msgnum;
4539                 cdb_delete(CDB_MSGMAIN, &delnum, (int)sizeof(long));
4540                 cdb_delete(CDB_BIGMSGS, &delnum, (int)sizeof(long));
4541
4542                 /* Remove metadata record */
4543                 delnum = (0L - msgnum);
4544                 cdb_delete(CDB_MSGMAIN, &delnum, (int)sizeof(long));
4545         }
4546
4547 }
4548
4549 /*
4550  * Write a generic object to this room
4551  *
4552  * Note: this could be much more efficient.  Right now we use two temporary
4553  * files, and still pull the message into memory as with all others.
4554  */
4555 void CtdlWriteObject(char *req_room,                    /* Room to stuff it in */
4556                         char *content_type,             /* MIME type of this object */
4557                         char *raw_message,              /* Data to be written */
4558                         off_t raw_length,               /* Size of raw_message */
4559                         struct ctdluser *is_mailbox,    /* Mailbox room? */
4560                         int is_binary,                  /* Is encoding necessary? */
4561                         int is_unique,                  /* Del others of this type? */
4562                         unsigned int flags              /* Internal save flags */
4563                         )
4564 {
4565
4566         struct ctdlroom qrbuf;
4567         char roomname[ROOMNAMELEN];
4568         struct CtdlMessage *msg;
4569         char *encoded_message = NULL;
4570
4571         if (is_mailbox != NULL) {
4572                 MailboxName(roomname, sizeof roomname, is_mailbox, req_room);
4573         }
4574         else {
4575                 safestrncpy(roomname, req_room, sizeof(roomname));
4576         }
4577
4578         CtdlLogPrintf(CTDL_DEBUG, "Raw length is %ld\n", (long)raw_length);
4579
4580         if (is_binary) {
4581                 encoded_message = malloc((size_t) (((raw_length * 134) / 100) + 4096 ) );
4582         }
4583         else {
4584                 encoded_message = malloc((size_t)(raw_length + 4096));
4585         }
4586
4587         sprintf(encoded_message, "Content-type: %s\n", content_type);
4588
4589         if (is_binary) {
4590                 sprintf(&encoded_message[strlen(encoded_message)],
4591                         "Content-transfer-encoding: base64\n\n"
4592                 );
4593         }
4594         else {
4595                 sprintf(&encoded_message[strlen(encoded_message)],
4596                         "Content-transfer-encoding: 7bit\n\n"
4597                 );
4598         }
4599
4600         if (is_binary) {
4601                 CtdlEncodeBase64(
4602                         &encoded_message[strlen(encoded_message)],
4603                         raw_message,
4604                         (int)raw_length,
4605                         0
4606                 );
4607         }
4608         else {
4609                 memcpy(
4610                         &encoded_message[strlen(encoded_message)],
4611                         raw_message,
4612                         (int)(raw_length+1)
4613                 );
4614         }
4615
4616         CtdlLogPrintf(CTDL_DEBUG, "Allocating\n");
4617         msg = malloc(sizeof(struct CtdlMessage));
4618         memset(msg, 0, sizeof(struct CtdlMessage));
4619         msg->cm_magic = CTDLMESSAGE_MAGIC;
4620         msg->cm_anon_type = MES_NORMAL;
4621         msg->cm_format_type = 4;
4622         msg->cm_fields['A'] = strdup(CC->user.fullname);
4623         msg->cm_fields['O'] = strdup(req_room);
4624         msg->cm_fields['N'] = strdup(config.c_nodename);
4625         msg->cm_fields['H'] = strdup(config.c_humannode);
4626         msg->cm_flags = flags;
4627
4628         msg->cm_fields['M'] = encoded_message;
4629
4630         /* Create the requested room if we have to. */
4631         if (getroom(&qrbuf, roomname) != 0) {
4632                 create_room(roomname,
4633                         ( (is_mailbox != NULL) ? 5 : 3 ),
4634                         "", 0, 1, 0, VIEW_BBS);
4635         }
4636         /* If the caller specified this object as unique, delete all
4637          * other objects of this type that are currently in the room.
4638          */
4639         if (is_unique) {
4640                 CtdlLogPrintf(CTDL_DEBUG, "Deleted %d other msgs of this type\n",
4641                         CtdlDeleteMessages(roomname, NULL, 0, content_type)
4642                 );
4643         }
4644         /* Now write the data */
4645         CtdlSubmitMsg(msg, NULL, roomname, 0);
4646         CtdlFreeMessage(msg);
4647 }
4648
4649
4650
4651
4652
4653
4654 void CtdlGetSysConfigBackend(long msgnum, void *userdata) {
4655         config_msgnum = msgnum;
4656 }
4657
4658
4659 char *CtdlGetSysConfig(char *sysconfname) {
4660         char hold_rm[ROOMNAMELEN];
4661         long msgnum;
4662         char *conf;
4663         struct CtdlMessage *msg;
4664         char buf[SIZ];
4665
4666         strcpy(hold_rm, CC->room.QRname);
4667         if (getroom(&CC->room, SYSCONFIGROOM) != 0) {
4668                 getroom(&CC->room, hold_rm);
4669                 return NULL;
4670         }
4671
4672
4673         /* We want the last (and probably only) config in this room */
4674         begin_critical_section(S_CONFIG);
4675         config_msgnum = (-1L);
4676         CtdlForEachMessage(MSGS_LAST, 1, NULL, sysconfname, NULL,
4677                 CtdlGetSysConfigBackend, NULL);
4678         msgnum = config_msgnum;
4679         end_critical_section(S_CONFIG);
4680
4681         if (msgnum < 0L) {
4682                 conf = NULL;
4683         }
4684         else {
4685                 msg = CtdlFetchMessage(msgnum, 1);
4686                 if (msg != NULL) {
4687                         conf = strdup(msg->cm_fields['M']);
4688                         CtdlFreeMessage(msg);
4689                 }
4690                 else {
4691                         conf = NULL;
4692                 }
4693         }
4694
4695         getroom(&CC->room, hold_rm);
4696
4697         if (conf != NULL) do {
4698                 extract_token(buf, conf, 0, '\n', sizeof buf);
4699                 strcpy(conf, &conf[strlen(buf)+1]);
4700         } while ( (!IsEmptyStr(conf)) && (!IsEmptyStr(buf)) );
4701
4702         return(conf);
4703 }
4704
4705
4706 void CtdlPutSysConfig(char *sysconfname, char *sysconfdata) {
4707         CtdlWriteObject(SYSCONFIGROOM, sysconfname, sysconfdata, (strlen(sysconfdata)+1), NULL, 0, 1, 0);
4708 }
4709
4710
4711 /*
4712  * Determine whether a given Internet address belongs to the current user
4713  */
4714 int CtdlIsMe(char *addr, int addr_buf_len)
4715 {
4716         struct recptypes *recp;
4717         int i;
4718
4719         recp = validate_recipients(addr, NULL, 0);
4720         if (recp == NULL) return(0);
4721
4722         if (recp->num_local == 0) {
4723                 free_recipients(recp);
4724                 return(0);
4725         }
4726
4727         for (i=0; i<recp->num_local; ++i) {
4728                 extract_token(addr, recp->recp_local, i, '|', addr_buf_len);
4729                 if (!strcasecmp(addr, CC->user.fullname)) {
4730                         free_recipients(recp);
4731                         return(1);
4732                 }
4733         }
4734
4735         free_recipients(recp);
4736         return(0);
4737 }
4738
4739
4740 /*
4741  * Citadel protocol command to do the same
4742  */
4743 void cmd_isme(char *argbuf) {
4744         char addr[256];
4745
4746         if (CtdlAccessCheck(ac_logged_in)) return;
4747         extract_token(addr, argbuf, 0, '|', sizeof addr);
4748
4749         if (CtdlIsMe(addr, sizeof addr)) {
4750                 cprintf("%d %s\n", CIT_OK, addr);
4751         }
4752         else {
4753                 cprintf("%d Not you.\n", ERROR + ILLEGAL_VALUE);
4754         }
4755
4756 }
4757
4758
4759 /*****************************************************************************/
4760 /*                      MODULE INITIALIZATION STUFF                          */
4761 /*****************************************************************************/
4762
4763 CTDL_MODULE_INIT(msgbase)
4764 {
4765         CtdlRegisterProtoHook(cmd_msgs, "MSGS", "Output a list of messages in the current room");
4766         CtdlRegisterProtoHook(cmd_msg0, "MSG0", "Output a message in plain text format");
4767         CtdlRegisterProtoHook(cmd_msg2, "MSG2", "Output a message in RFC822 format");
4768         CtdlRegisterProtoHook(cmd_msg3, "MSG3", "Output a message in raw format (deprecated)");
4769         CtdlRegisterProtoHook(cmd_msg4, "MSG4", "Output a message in the client's preferred format");
4770         CtdlRegisterProtoHook(cmd_msgp, "MSGP", "Select preferred format for MSG4 output");
4771         CtdlRegisterProtoHook(cmd_opna, "OPNA", "Open an attachment for download");
4772         CtdlRegisterProtoHook(cmd_dlat, "DLAT", "Download an attachment");
4773         CtdlRegisterProtoHook(cmd_ent0, "ENT0", "Enter a message");
4774         CtdlRegisterProtoHook(cmd_dele, "DELE", "Delete a message");
4775         CtdlRegisterProtoHook(cmd_move, "MOVE", "Move or copy a message to another room");
4776         CtdlRegisterProtoHook(cmd_isme, "ISME", "Determine whether an email address belongs to a user");
4777
4778         /* return our Subversion id for the Log */
4779         return "$Id$";
4780 }