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