citadel/msgbase.c

   1 /*
   2  * $Id$
   3  *
   4  * Implements the message store.
   5  *
   6  */
   7
   8 #ifdef DLL_EXPORT
   9 #define IN_LIBCIT
  10 #endif
  11
  12 #include "sysdep.h"
  13 #include <stdlib.h>
  14 #include <unistd.h>
  15 #include <stdio.h>
  16 #include <fcntl.h>
  17
  18 #if TIME_WITH_SYS_TIME
  19 # include <sys/time.h>
  20 # include <time.h>
  21 #else
  22 # if HAVE_SYS_TIME_H
  23 #  include <sys/time.h>
  24 # else
  25 #  include <time.h>
  26 # endif
  27 #endif
  28
  29
  30 #include <ctype.h>
  31 #include <string.h>
  32 #include <limits.h>
  33 #include <errno.h>
  34 #include <stdarg.h>
  35 #include <sys/stat.h>
  36 #include "citadel.h"
  37 #include "server.h"
  38 #include "serv_extensions.h"
  39 #include "database.h"
  40 #include "msgbase.h"
  41 #include "support.h"
  42 #include "sysdep_decls.h"
  43 #include "citserver.h"
  44 #include "room_ops.h"
  45 #include "user_ops.h"
  46 #include "file_ops.h"
  47 #include "config.h"
  48 #include "control.h"
  49 #include "tools.h"
  50 #include "mime_parser.h"
  51 #include "html.h"
  52 #include "genstamp.h"
  53 #include "internet_addressing.h"
  54 #include "serv_fulltext.h"
  55 #include "vcard.h"
  56
  57 long config_msgnum;
  58
  59
  60 /*
  61  * This really belongs in serv_network.c, but I don't know how to export
  62  * symbols between modules.
  63  */
  64 struct FilterList *filterlist = NULL;
  65
  66
  67 /*
  68  * These are the four-character field headers we use when outputting
  69  * messages in Citadel format (as opposed to RFC822 format).
  70  */
  71 char *msgkeys[] = {
  72         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  73         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  74         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  75         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  76         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  77         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  78         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  79         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  80         NULL,
  81         "from",
  82         NULL, NULL, NULL,
  83         "exti",
  84         "rfca",
  85         NULL,
  86         "hnod",
  87         "msgn",
  88         NULL, NULL, NULL,
  89         "text",
  90         "node",
  91         "room",
  92         "path",
  93         NULL,
  94         "rcpt",
  95         "spec",
  96         "time",
  97         "subj",
  98         NULL,
  99         NULL,
 100         NULL,
 101         "cccc",
 102         NULL
 103 };
 104
 105 /*
 106  * This function is self explanatory.
 107  * (What can I say, I'm in a weird mood today...)
 108  */
 109 void remove_any_whitespace_to_the_left_or_right_of_at_symbol(char *name)
 110 {
 111         int i;
 112
 113         for (i = 0; i < strlen(name); ++i) {
 114                 if (name[i] == '@') {
 115                         while (isspace(name[i - 1]) && i > 0) {
 116                                 strcpy(&name[i - 1], &name[i]);
 117                                 --i;
 118                         }
 119                         while (isspace(name[i + 1])) {
 120                                 strcpy(&name[i + 1], &name[i + 2]);
 121                         }
 122                 }
 123         }
 124 }
 125
 126
 127 /*
 128  * Aliasing for network mail.
 129  * (Error messages have been commented out, because this is a server.)
 130  */
 131 int alias(char *name)
 132 {                               /* process alias and routing info for mail */
 133         FILE *fp;
 134         int a, i;
 135         char aaa[SIZ], bbb[SIZ];
 136         char *ignetcfg = NULL;
 137         char *ignetmap = NULL;
 138         int at = 0;
 139         char node[64];
 140         char testnode[64];
 141         char buf[SIZ];
 142
 143         striplt(name);
 144         remove_any_whitespace_to_the_left_or_right_of_at_symbol(name);
 145
 146         fp = fopen(
 147 #ifndef HAVE_ETG_DIR
 148                            "network/"
 149 #else
 150                            ETC_DIR
 151 #endif
 152                            "mail.aliases", "r");
 153         if (fp == NULL) {
 154                 fp = fopen("/dev/null", "r");
 155         }
 156         if (fp == NULL) {
 157                 return (MES_ERROR);
 158         }
 159         strcpy(aaa, "");
 160         strcpy(bbb, "");
 161         while (fgets(aaa, sizeof aaa, fp) != NULL) {
 162                 while (isspace(name[0]))
 163                         strcpy(name, &name[1]);
 164                 aaa[strlen(aaa) - 1] = 0;
 165                 strcpy(bbb, "");
 166                 for (a = 0; a < strlen(aaa); ++a) {
 167                         if (aaa[a] == ',') {
 168                                 strcpy(bbb, &aaa[a + 1]);
 169                                 aaa[a] = 0;
 170                         }
 171                 }
 172                 if (!strcasecmp(name, aaa))
 173                         strcpy(name, bbb);
 174         }
 175         fclose(fp);
 176
 177         /* Hit the Global Address Book */
 178         if (CtdlDirectoryLookup(aaa, name, sizeof aaa) == 0) {
 179                 strcpy(name, aaa);
 180         }
 181
 182         lprintf(CTDL_INFO, "Mail is being forwarded to %s\n", name);
 183
 184         /* Change "user @ xxx" to "user" if xxx is an alias for this host */
 185         for (a=0; a<strlen(name); ++a) {
 186                 if (name[a] == '@') {
 187                         if (CtdlHostAlias(&name[a+1]) == hostalias_localhost) {
 188                                 name[a] = 0;
 189                                 lprintf(CTDL_INFO, "Changed to <%s>\n", name);
 190                         }
 191                 }
 192         }
 193
 194         /* determine local or remote type, see citadel.h */
 195         at = haschar(name, '@');
 196         if (at == 0) return(MES_LOCAL);         /* no @'s - local address */
 197         if (at > 1) return(MES_ERROR);          /* >1 @'s - invalid address */
 198         remove_any_whitespace_to_the_left_or_right_of_at_symbol(name);
 199
 200         /* figure out the delivery mode */
 201         extract_token(node, name, 1, '@', sizeof node);
 202
 203         /* If there are one or more dots in the nodename, we assume that it
 204          * is an FQDN and will attempt SMTP delivery to the Internet.
 205          */
 206         if (haschar(node, '.') > 0) {
 207                 return(MES_INTERNET);
 208         }
 209
 210         /* Otherwise we look in the IGnet maps for a valid Citadel node.
 211          * Try directly-connected nodes first...
 212          */
 213         ignetcfg = CtdlGetSysConfig(IGNETCFG);
 214         for (i=0; i<num_tokens(ignetcfg, '\n'); ++i) {
 215                 extract_token(buf, ignetcfg, i, '\n', sizeof buf);
 216                 extract_token(testnode, buf, 0, '|', sizeof testnode);
 217                 if (!strcasecmp(node, testnode)) {
 218                         free(ignetcfg);
 219                         return(MES_IGNET);
 220                 }
 221         }
 222         free(ignetcfg);
 223
 224         /*
 225          * Then try nodes that are two or more hops away.
 226          */
 227         ignetmap = CtdlGetSysConfig(IGNETMAP);
 228         for (i=0; i<num_tokens(ignetmap, '\n'); ++i) {
 229                 extract_token(buf, ignetmap, i, '\n', sizeof buf);
 230                 extract_token(testnode, buf, 0, '|', sizeof testnode);
 231                 if (!strcasecmp(node, testnode)) {
 232                         free(ignetmap);
 233                         return(MES_IGNET);
 234                 }
 235         }
 236         free(ignetmap);
 237
 238         /* If we get to this point it's an invalid node name */
 239         return (MES_ERROR);
 240 }
 241
 242
 243 void get_mm(void)
 244 {
 245         FILE *fp;
 246
 247         fp = fopen(
 248 #ifndef HAVE_RUN_DIR
 249                            "."
 250 #else
 251                            RUN_DIR
 252 #endif
 253                            "/citadel.control", "r");
 254         if (fp == NULL) {
 255                 lprintf(CTDL_CRIT, "Cannot open citadel.control: %s\n",
 256                         strerror(errno));
 257                 exit(errno);
 258         }
 259         fread((char *) &CitControl, sizeof(struct CitControl), 1, fp);
 260         fclose(fp);
 261 }
 262
 263
 264 /*
 265  * Back end for the MSGS command: output message number only.
 266  */
 267 void simple_listing(long msgnum, void *userdata)
 268 {
 269         cprintf("%ld\n", msgnum);
 270 }
 271
 272
 273
 274 /*
 275  * Back end for the MSGS command: output header summary.
 276  */
 277 void headers_listing(long msgnum, void *userdata)
 278 {
 279         struct CtdlMessage *msg;
 280
 281         msg = CtdlFetchMessage(msgnum, 0);
 282         if (msg < 0L) {
 283                 cprintf("%ld|0|||||\n", msgnum);
 284                 return;
 285         }
 286
 287         cprintf("%ld|%s|%s|%s|%s|%s|\n",
 288                 msgnum,
 289                 (msg->cm_fields['T'] ? msg->cm_fields['T'] : "0"),
 290                 (msg->cm_fields['A'] ? msg->cm_fields['A'] : ""),
 291                 (msg->cm_fields['N'] ? msg->cm_fields['N'] : ""),
 292                 (msg->cm_fields['F'] ? msg->cm_fields['F'] : ""),
 293                 (msg->cm_fields['U'] ? msg->cm_fields['U'] : "")
 294         );
 295         CtdlFreeMessage(msg);
 296 }
 297
 298
 299
 300 /* Determine if a given message matches the fields in a message template.
 301  * Return 0 for a successful match.
 302  */
 303 int CtdlMsgCmp(struct CtdlMessage *msg, struct CtdlMessage *template) {
 304         int i;
 305
 306         /* If there aren't any fields in the template, all messages will
 307          * match.
 308          */
 309         if (template == NULL) return(0);
 310
 311         /* Null messages are bogus. */
 312         if (msg == NULL) return(1);
 313
 314         for (i='A'; i<='Z'; ++i) {
 315                 if (template->cm_fields[i] != NULL) {
 316                         if (msg->cm_fields[i] == NULL) {
 317                                 return 1;
 318                         }
 319                         if (strcasecmp(msg->cm_fields[i],
 320                                 template->cm_fields[i])) return 1;
 321                 }
 322         }
 323
 324         /* All compares succeeded: we have a match! */
 325         return 0;
 326 }
 327
 328
 329
 330 /*
 331  * Retrieve the "seen" message list for the current room.
 332  */
 333 void CtdlGetSeen(char *buf, int which_set) {
 334         struct visit vbuf;
 335
 336         /* Learn about the user and room in question */
 337         CtdlGetRelationship(&vbuf, &CC->user, &CC->room);
 338
 339         if (which_set == ctdlsetseen_seen)
 340                 safestrncpy(buf, vbuf.v_seen, SIZ);
 341         if (which_set == ctdlsetseen_answered)
 342                 safestrncpy(buf, vbuf.v_answered, SIZ);
 343 }
 344
 345
 346
 347 /*
 348  * Manipulate the "seen msgs" string (or other message set strings)
 349  */
 350 void CtdlSetSeen(long target_msgnum, int target_setting, int which_set,
 351                 struct ctdluser *which_user, struct ctdlroom *which_room) {
 352         struct cdbdata *cdbfr;
 353         int i, j;
 354         int is_seen = 0;
 355         int was_seen = 0;
 356         long lo = (-1L);
 357         long hi = (-1L);
 358         long t = (-1L);
 359         int trimming = 0;
 360         struct visit vbuf;
 361         long *msglist;
 362         int num_msgs = 0;
 363         char vset[SIZ];
 364         char *is_set;   /* actually an array of booleans */
 365         int num_sets;
 366         int s;
 367         char setstr[SIZ], lostr[SIZ], histr[SIZ];
 368         size_t tmp;
 369
 370         lprintf(CTDL_DEBUG, "CtdlSetSeen(%ld, %d, %d)\n",
 371                 target_msgnum, target_setting, which_set);
 372
 373         /* Learn about the user and room in question */
 374         CtdlGetRelationship(&vbuf,
 375                 ((which_user != NULL) ? which_user : &CC->user),
 376                 ((which_room != NULL) ? which_room : &CC->room)
 377         );
 378
 379         /* Load the message list */
 380         cdbfr = cdb_fetch(CDB_MSGLISTS, &CC->room.QRnumber, sizeof(long));
 381         if (cdbfr != NULL) {
 382                 msglist = malloc(cdbfr->len);
 383                 memcpy(msglist, cdbfr->ptr, cdbfr->len);
 384                 num_msgs = cdbfr->len / sizeof(long);
 385                 cdb_free(cdbfr);
 386         } else {
 387                 return; /* No messages at all?  No further action. */
 388         }
 389
 390         is_set = malloc(num_msgs * sizeof(char));
 391         memset(is_set, 0, (num_msgs * sizeof(char)) );
 392
 393         /* Decide which message set we're manipulating */
 394         switch(which_set) {
 395                 case ctdlsetseen_seen:
 396                         safestrncpy(vset, vbuf.v_seen, sizeof vset);
 397                         break;
 398                 case ctdlsetseen_answered:
 399                         safestrncpy(vset, vbuf.v_answered, sizeof vset);
 400                         break;
 401         }
 402
 403         /* lprintf(CTDL_DEBUG, "before optimize: %s\n", vset); */
 404
 405         /* Translate the existing sequence set into an array of booleans */
 406         num_sets = num_tokens(vset, ',');
 407         for (s=0; s<num_sets; ++s) {
 408                 extract_token(setstr, vset, s, ',', sizeof setstr);
 409
 410                 extract_token(lostr, setstr, 0, ':', sizeof lostr);
 411                 if (num_tokens(setstr, ':') >= 2) {
 412                         extract_token(histr, setstr, 1, ':', sizeof histr);
 413                         if (!strcmp(histr, "*")) {
 414                                 snprintf(histr, sizeof histr, "%ld", LONG_MAX);
 415                         }
 416                 }
 417                 else {
 418                         strcpy(histr, lostr);
 419                 }
 420                 lo = atol(lostr);
 421                 hi = atol(histr);
 422
 423                 for (i = 0; i < num_msgs; ++i) {
 424                         if ((msglist[i] >= lo) && (msglist[i] <= hi)) {
 425                                 is_set[i] = 1;
 426                         }
 427                 }
 428         }
 429
 430         /* Now translate the array of booleans back into a sequence set */
 431         strcpy(vset, "");
 432         lo = (-1L);
 433         hi = (-1L);
 434
 435         for (i=0; i<num_msgs; ++i) {
 436                 is_seen = 0;
 437
 438                 if (msglist[i] == target_msgnum) {
 439                         is_seen = target_setting;
 440                 }
 441                 else {
 442                         is_seen = is_set[i];
 443                 }
 444
 445                 if (is_seen) {
 446                         if (lo < 0L) lo = msglist[i];
 447                         hi = msglist[i];
 448                 }
 449
 450                 if (  ((is_seen == 0) && (was_seen == 1))
 451                    || ((is_seen == 1) && (i == num_msgs-1)) ) {
 452
 453                         /* begin trim-o-matic code */
 454                         j=9;
 455                         trimming = 0;
 456                         while ( (strlen(vset) + 20) > sizeof vset) {
 457                                 remove_token(vset, 0, ',');
 458                                 trimming = 1;
 459                                 if (j--) break; /* loop no more than 9 times */
 460                         }
 461                         if ( (trimming) && (which_set == ctdlsetseen_seen) ) {
 462                                 t = atol(vset);
 463                                 if (t<2) t=2;
 464                                 --t;
 465                                 snprintf(lostr, sizeof lostr,
 466                                         "1:%ld,%s", t, vset);
 467                                 safestrncpy(vset, lostr, sizeof vset);
 468                         }
 469                         /* end trim-o-matic code */
 470
 471                         tmp = strlen(vset);
 472                         if (tmp > 0) {
 473                                 strcat(vset, ",");
 474                                 ++tmp;
 475                         }
 476                         if (lo == hi) {
 477                                 snprintf(&vset[tmp], (sizeof vset) - tmp,
 478                                          "%ld", lo);
 479                         }
 480                         else {
 481                                 snprintf(&vset[tmp], (sizeof vset) - tmp,
 482                                          "%ld:%ld", lo, hi);
 483                         }
 484                         lo = (-1L);
 485                         hi = (-1L);
 486                 }
 487                 was_seen = is_seen;
 488         }
 489
 490         /* Decide which message set we're manipulating */
 491         switch (which_set) {
 492                 case ctdlsetseen_seen:
 493                         safestrncpy(vbuf.v_seen, vset, sizeof vbuf.v_seen);
 494                         break;
 495                 case ctdlsetseen_answered:
 496                         safestrncpy(vbuf.v_answered, vset,
 497                                                 sizeof vbuf.v_answered);
 498                         break;
 499         }
 500         free(is_set);
 501
 502         /* lprintf(CTDL_DEBUG, " after optimize: %s\n", vset); */
 503         free(msglist);
 504         CtdlSetRelationship(&vbuf,
 505                 ((which_user != NULL) ? which_user : &CC->user),
 506                 ((which_room != NULL) ? which_room : &CC->room)
 507         );
 508 }
 509
 510
 511 /*
 512  * API function to perform an operation for each qualifying message in the
 513  * current room.  (Returns the number of messages processed.)
 514  */
 515 int CtdlForEachMessage(int mode, long ref,
 516                         char *content_type,
 517                         struct CtdlMessage *compare,
 518                         void (*CallBack) (long, void *),
 519                         void *userdata)
 520 {
 521
 522         int a;
 523         struct visit vbuf;
 524         struct cdbdata *cdbfr;
 525         long *msglist = NULL;
 526         int num_msgs = 0;
 527         int num_processed = 0;
 528         long thismsg;
 529         struct MetaData smi;
 530         struct CtdlMessage *msg;
 531         int is_seen = 0;
 532         long lastold = 0L;
 533         int printed_lastold = 0;
 534
 535         /* Learn about the user and room in question */
 536         get_mm();
 537         getuser(&CC->user, CC->curr_user);
 538         CtdlGetRelationship(&vbuf, &CC->user, &CC->room);
 539
 540         /* Load the message list */
 541         cdbfr = cdb_fetch(CDB_MSGLISTS, &CC->room.QRnumber, sizeof(long));
 542         if (cdbfr != NULL) {
 543                 msglist = malloc(cdbfr->len);
 544                 memcpy(msglist, cdbfr->ptr, cdbfr->len);
 545                 num_msgs = cdbfr->len / sizeof(long);
 546                 cdb_free(cdbfr);
 547         } else {
 548                 return 0;       /* No messages at all?  No further action. */
 549         }
 550
 551
 552         /*
 553          * Now begin the traversal.
 554          */
 555         if (num_msgs > 0) for (a = 0; a < num_msgs; ++a) {
 556
 557                 /* If the caller is looking for a specific MIME type, filter
 558                  * out all messages which are not of the type requested.
 559                  */
 560                 if (content_type != NULL) if (strlen(content_type) > 0) {
 561
 562                         /* This call to GetMetaData() sits inside this loop
 563                          * so that we only do the extra database read per msg
 564                          * if we need to.  Doing the extra read all the time
 565                          * really kills the server.  If we ever need to use
 566                          * metadata for another search criterion, we need to
 567                          * move the read somewhere else -- but still be smart
 568                          * enough to only do the read if the caller has
 569                          * specified something that will need it.
 570                          */
 571                         GetMetaData(&smi, msglist[a]);
 572
 573                         if (strcasecmp(smi.meta_content_type, content_type)) {
 574                                 msglist[a] = 0L;
 575                         }
 576                 }
 577         }
 578
 579         num_msgs = sort_msglist(msglist, num_msgs);
 580
 581         /* If a template was supplied, filter out the messages which
 582          * don't match.  (This could induce some delays!)
 583          */
 584         if (num_msgs > 0) {
 585                 if (compare != NULL) {
 586                         for (a = 0; a < num_msgs; ++a) {
 587                                 msg = CtdlFetchMessage(msglist[a], 1);
 588                                 if (msg != NULL) {
 589                                         if (CtdlMsgCmp(msg, compare)) {
 590                                                 msglist[a] = 0L;
 591                                         }
 592                                         CtdlFreeMessage(msg);
 593                                 }
 594                         }
 595                 }
 596         }
 597
 598
 599         /*
 600          * Now iterate through the message list, according to the
 601          * criteria supplied by the caller.
 602          */
 603         if (num_msgs > 0)
 604                 for (a = 0; a < num_msgs; ++a) {
 605                         thismsg = msglist[a];
 606                         if (mode == MSGS_ALL) {
 607                                 is_seen = 0;
 608                         }
 609                         else {
 610                                 is_seen = is_msg_in_sequence_set(
 611                                                         vbuf.v_seen, thismsg);
 612                                 if (is_seen) lastold = thismsg;
 613                         }
 614                         if ((thismsg > 0L)
 615                             && (
 616
 617                                        (mode == MSGS_ALL)
 618                                        || ((mode == MSGS_OLD) && (is_seen))
 619                                        || ((mode == MSGS_NEW) && (!is_seen))
 620                                        || ((mode == MSGS_LAST) && (a >= (num_msgs - ref)))
 621                                    || ((mode == MSGS_FIRST) && (a < ref))
 622                                 || ((mode == MSGS_GT) && (thismsg > ref))
 623                                 || ((mode == MSGS_EQ) && (thismsg == ref))
 624                             )
 625                             ) {
 626                                 if ((mode == MSGS_NEW) && (CC->user.flags & US_LASTOLD) && (lastold > 0L) && (printed_lastold == 0) && (!is_seen)) {
 627                                         if (CallBack)
 628                                                 CallBack(lastold, userdata);
 629                                         printed_lastold = 1;
 630                                         ++num_processed;
 631                                 }
 632                                 if (CallBack) CallBack(thismsg, userdata);
 633                                 ++num_processed;
 634                         }
 635                 }
 636         free(msglist);          /* Clean up */
 637         return num_processed;
 638 }
 639
 640
 641
 642 /*
 643  * cmd_msgs()  -  get list of message #'s in this room
 644  *              implements the MSGS server command using CtdlForEachMessage()
 645  */
 646 void cmd_msgs(char *cmdbuf)
 647 {
 648         int mode = 0;
 649         char which[16];
 650         char buf[256];
 651         char tfield[256];
 652         char tvalue[256];
 653         int cm_ref = 0;
 654         int i;
 655         int with_template = 0;
 656         struct CtdlMessage *template = NULL;
 657         int with_headers = 0;
 658
 659         extract_token(which, cmdbuf, 0, '|', sizeof which);
 660         cm_ref = extract_int(cmdbuf, 1);
 661         with_template = extract_int(cmdbuf, 2);
 662         with_headers = extract_int(cmdbuf, 3);
 663
 664         mode = MSGS_ALL;
 665         strcat(which, "   ");
 666         if (!strncasecmp(which, "OLD", 3))
 667                 mode = MSGS_OLD;
 668         else if (!strncasecmp(which, "NEW", 3))
 669                 mode = MSGS_NEW;
 670         else if (!strncasecmp(which, "FIRST", 5))
 671                 mode = MSGS_FIRST;
 672         else if (!strncasecmp(which, "LAST", 4))
 673                 mode = MSGS_LAST;
 674         else if (!strncasecmp(which, "GT", 2))
 675                 mode = MSGS_GT;
 676
 677         if ((!(CC->logged_in)) && (!(CC->internal_pgm))) {
 678                 cprintf("%d not logged in\n", ERROR + NOT_LOGGED_IN);
 679                 return;
 680         }
 681
 682         if (with_template) {
 683                 unbuffer_output();
 684                 cprintf("%d Send template then receive message list\n",
 685                         START_CHAT_MODE);
 686                 template = (struct CtdlMessage *)
 687                         malloc(sizeof(struct CtdlMessage));
 688                 memset(template, 0, sizeof(struct CtdlMessage));
 689                 while(client_getln(buf, sizeof buf), strcmp(buf,"000")) {
 690                         extract_token(tfield, buf, 0, '|', sizeof tfield);
 691                         extract_token(tvalue, buf, 1, '|', sizeof tvalue);
 692                         for (i='A'; i<='Z'; ++i) if (msgkeys[i]!=NULL) {
 693                                 if (!strcasecmp(tfield, msgkeys[i])) {
 694                                         template->cm_fields[i] =
 695                                                 strdup(tvalue);
 696                                 }
 697                         }
 698                 }
 699                 buffer_output();
 700         }
 701         else {
 702                 cprintf("%d  \n", LISTING_FOLLOWS);
 703         }
 704
 705         CtdlForEachMessage(mode,
 706                         cm_ref,
 707                         NULL,
 708                         template,
 709                         (with_headers ? headers_listing : simple_listing),
 710                         NULL
 711         );
 712         if (template != NULL) CtdlFreeMessage(template);
 713         cprintf("000\n");
 714 }
 715
 716
 717
 718
 719 /*
 720  * help_subst()  -  support routine for help file viewer
 721  */
 722 void help_subst(char *strbuf, char *source, char *dest)
 723 {
 724         char workbuf[SIZ];
 725         int p;
 726
 727         while (p = pattern2(strbuf, source), (p >= 0)) {
 728                 strcpy(workbuf, &strbuf[p + strlen(source)]);
 729                 strcpy(&strbuf[p], dest);
 730                 strcat(strbuf, workbuf);
 731         }
 732 }
 733
 734
 735 void do_help_subst(char *buffer)
 736 {
 737         char buf2[16];
 738
 739         help_subst(buffer, "^nodename", config.c_nodename);
 740         help_subst(buffer, "^humannode", config.c_humannode);
 741         help_subst(buffer, "^fqdn", config.c_fqdn);
 742         help_subst(buffer, "^username", CC->user.fullname);
 743         snprintf(buf2, sizeof buf2, "%ld", CC->user.usernum);
 744         help_subst(buffer, "^usernum", buf2);
 745         help_subst(buffer, "^sysadm", config.c_sysadm);
 746         help_subst(buffer, "^variantname", CITADEL);
 747         snprintf(buf2, sizeof buf2, "%d", config.c_maxsessions);
 748         help_subst(buffer, "^maxsessions", buf2);
 749         help_subst(buffer, "^bbsdir", CTDLDIR);
 750 }
 751
 752
 753
 754 /*
 755  * memfmout()  -  Citadel text formatter and paginator.
 756  *           Although the original purpose of this routine was to format
 757  *           text to the reader's screen width, all we're really using it
 758  *           for here is to format text out to 80 columns before sending it
 759  *           to the client.  The client software may reformat it again.
 760  */
 761 void memfmout(
 762         int width,              /* screen width to use */
 763         char *mptr,             /* where are we going to get our text from? */
 764         char subst,             /* nonzero if we should do substitutions */
 765         char *nl)               /* string to terminate lines with */
 766 {
 767         int a, b, c;
 768         int real = 0;
 769         int old = 0;
 770         cit_uint8_t ch;
 771         char aaa[140];
 772         char buffer[SIZ];
 773
 774         strcpy(aaa, "");
 775         old = 255;
 776         strcpy(buffer, "");
 777         c = 1;                  /* c is the current pos */
 778
 779         do {
 780                 if (subst) {
 781                         while (ch = *mptr, ((ch != 0) && (strlen(buffer) < 126))) {
 782                                 ch = *mptr++;
 783                                 buffer[strlen(buffer) + 1] = 0;
 784                                 buffer[strlen(buffer)] = ch;
 785                         }
 786
 787                         if (buffer[0] == '^')
 788                                 do_help_subst(buffer);
 789
 790                         buffer[strlen(buffer) + 1] = 0;
 791                         a = buffer[0];
 792                         strcpy(buffer, &buffer[1]);
 793                 } else {
 794                         ch = *mptr++;
 795                 }
 796
 797                 old = real;
 798                 real = ch;
 799
 800                 if (((ch == 13) || (ch == 10)) && (old != 13) && (old != 10))
 801                         ch = 32;
 802                 if (((old == 13) || (old == 10)) && (isspace(real))) {
 803                         cprintf("%s", nl);
 804                         c = 1;
 805                 }
 806                 if (ch > 126)
 807                         continue;
 808
 809                 if (ch > 32) {
 810                         if (((strlen(aaa) + c) > (width - 5)) && (strlen(aaa) > (width - 5))) {
 811                                 cprintf("%s%s", nl, aaa);
 812                                 c = strlen(aaa);
 813                                 aaa[0] = 0;
 814                         }
 815                         b = strlen(aaa);
 816                         aaa[b] = ch;
 817                         aaa[b + 1] = 0;
 818                 }
 819                 if (ch == 32) {
 820                         if ((strlen(aaa) + c) > (width - 5)) {
 821                                 cprintf("%s", nl);
 822                                 c = 1;
 823                         }
 824                         cprintf("%s ", aaa);
 825                         ++c;
 826                         c = c + strlen(aaa);
 827                         strcpy(aaa, "");
 828                 }
 829                 if ((ch == 13) || (ch == 10)) {
 830                         cprintf("%s%s", aaa, nl);
 831                         c = 1;
 832                         strcpy(aaa, "");
 833                 }
 834
 835         } while (ch > 0);
 836
 837         cprintf("%s%s", aaa, nl);
 838 }
 839
 840
 841
 842 /*
 843  * Callback function for mime parser that simply lists the part
 844  */
 845 void list_this_part(char *name, char *filename, char *partnum, char *disp,
 846                     void *content, char *cbtype, char *cbcharset, size_t length, char *encoding,
 847                     void *cbuserdata)
 848 {
 849
 850         cprintf("part=%s|%s|%s|%s|%s|%ld\n",
 851                 name, filename, partnum, disp, cbtype, (long)length);
 852 }
 853
 854 /*
 855  * Callback function for multipart prefix
 856  */
 857 void list_this_pref(char *name, char *filename, char *partnum, char *disp,
 858                     void *content, char *cbtype, char *cbcharset, size_t length, char *encoding,
 859                     void *cbuserdata)
 860 {
 861         cprintf("pref=%s|%s\n", partnum, cbtype);
 862 }
 863
 864 /*
 865  * Callback function for multipart sufffix
 866  */
 867 void list_this_suff(char *name, char *filename, char *partnum, char *disp,
 868                     void *content, char *cbtype, char *cbcharset, size_t length, char *encoding,
 869                     void *cbuserdata)
 870 {
 871         cprintf("suff=%s|%s\n", partnum, cbtype);
 872 }
 873
 874
 875 /*
 876  * Callback function for mime parser that opens a section for downloading
 877  */
 878 void mime_download(char *name, char *filename, char *partnum, char *disp,
 879                    void *content, char *cbtype, char *cbcharset, size_t length,
 880                    char *encoding, void *cbuserdata)
 881 {
 882
 883         /* Silently go away if there's already a download open... */
 884         if (CC->download_fp != NULL)
 885                 return;
 886
 887         /* ...or if this is not the desired section */
 888         if (strcasecmp(CC->download_desired_section, partnum))
 889                 return;
 890
 891         CC->download_fp = tmpfile();
 892         if (CC->download_fp == NULL)
 893                 return;
 894
 895         fwrite(content, length, 1, CC->download_fp);
 896         fflush(CC->download_fp);
 897         rewind(CC->download_fp);
 898
 899         OpenCmdResult(filename, cbtype);
 900 }
 901
 902
 903
 904 /*
 905  * Load a message from disk into memory.
 906  * This is used by CtdlOutputMsg() and other fetch functions.
 907  *
 908  * NOTE: Caller is responsible for freeing the returned CtdlMessage struct
 909  *       using the CtdlMessageFree() function.
 910  */
 911 struct CtdlMessage *CtdlFetchMessage(long msgnum, int with_body)
 912 {
 913         struct cdbdata *dmsgtext;
 914         struct CtdlMessage *ret = NULL;
 915         char *mptr;
 916         char *upper_bound;
 917         cit_uint8_t ch;
 918         cit_uint8_t field_header;
 919
 920         lprintf(CTDL_DEBUG, "CtdlFetchMessage(%ld, %d)\n", msgnum, with_body);
 921
 922         dmsgtext = cdb_fetch(CDB_MSGMAIN, &msgnum, sizeof(long));
 923         if (dmsgtext == NULL) {
 924                 return NULL;
 925         }
 926         mptr = dmsgtext->ptr;
 927         upper_bound = mptr + dmsgtext->len;
 928
 929         /* Parse the three bytes that begin EVERY message on disk.
 930          * The first is always 0xFF, the on-disk magic number.
 931          * The second is the anonymous/public type byte.
 932          * The third is the format type byte (vari, fixed, or MIME).
 933          */
 934         ch = *mptr++;
 935         if (ch != 255) {
 936                 lprintf(CTDL_ERR,
 937                         "Message %ld appears to be corrupted.\n",
 938                         msgnum);
 939                 cdb_free(dmsgtext);
 940                 return NULL;
 941         }
 942         ret = (struct CtdlMessage *) malloc(sizeof(struct CtdlMessage));
 943         memset(ret, 0, sizeof(struct CtdlMessage));
 944
 945         ret->cm_magic = CTDLMESSAGE_MAGIC;
 946         ret->cm_anon_type = *mptr++;    /* Anon type byte */
 947         ret->cm_format_type = *mptr++;  /* Format type byte */
 948
 949         /*
 950          * The rest is zero or more arbitrary fields.  Load them in.
 951          * We're done when we encounter either a zero-length field or
 952          * have just processed the 'M' (message text) field.
 953          */
 954         do {
 955                 if (mptr >= upper_bound) {
 956                         break;
 957                 }
 958                 field_header = *mptr++;
 959                 ret->cm_fields[field_header] = strdup(mptr);
 960
 961                 while (*mptr++ != 0);   /* advance to next field */
 962
 963         } while ((mptr < upper_bound) && (field_header != 'M'));
 964
 965         cdb_free(dmsgtext);
 966
 967         /* Always make sure there's something in the msg text field.  If
 968          * it's NULL, the message text is most likely stored separately,
 969          * so go ahead and fetch that.  Failing that, just set a dummy
 970          * body so other code doesn't barf.
 971          */
 972         if ( (ret->cm_fields['M'] == NULL) && (with_body) ) {
 973                 dmsgtext = cdb_fetch(CDB_BIGMSGS, &msgnum, sizeof(long));
 974                 if (dmsgtext != NULL) {
 975                         ret->cm_fields['M'] = strdup(dmsgtext->ptr);
 976                         cdb_free(dmsgtext);
 977                 }
 978         }
 979         if (ret->cm_fields['M'] == NULL) {
 980                 ret->cm_fields['M'] = strdup("<no text>\n");
 981         }
 982
 983         /* Perform "before read" hooks (aborting if any return nonzero) */
 984         if (PerformMessageHooks(ret, EVT_BEFOREREAD) > 0) {
 985                 CtdlFreeMessage(ret);
 986                 return NULL;
 987         }
 988
 989         return (ret);
 990 }
 991
 992
 993 /*
 994  * Returns 1 if the supplied pointer points to a valid Citadel message.
 995  * If the pointer is NULL or the magic number check fails, returns 0.
 996  */
 997 int is_valid_message(struct CtdlMessage *msg) {
 998         if (msg == NULL)
 999                 return 0;
1000         if ((msg->cm_magic) != CTDLMESSAGE_MAGIC) {
1001                 lprintf(CTDL_WARNING, "is_valid_message() -- self-check failed\n");
1002                 return 0;
1003         }
1004         return 1;
1005 }
1006
1007
1008 /*
1009  * 'Destructor' for struct CtdlMessage
1010  */
1011 void CtdlFreeMessage(struct CtdlMessage *msg)
1012 {
1013         int i;
1014
1015         if (is_valid_message(msg) == 0) return;
1016
1017         for (i = 0; i < 256; ++i)
1018                 if (msg->cm_fields[i] != NULL) {
1019                         free(msg->cm_fields[i]);
1020                 }
1021
1022         msg->cm_magic = 0;      /* just in case */
1023         free(msg);
1024 }
1025
1026
1027 /*
1028  * Pre callback function for multipart/alternative
1029  *
1030  * NOTE: this differs from the standard behavior for a reason.  Normally when
1031  *       displaying multipart/alternative you want to show the _last_ usable
1032  *       format in the message.  Here we show the _first_ one, because it's
1033  *       usually text/plain.  Since this set of functions is designed for text
1034  *       output to non-MIME-aware clients, this is the desired behavior.
1035  *
1036  */
1037 void fixed_output_pre(char *name, char *filename, char *partnum, char *disp,
1038                 void *content, char *cbtype, char *cbcharset, size_t length, char *encoding,
1039                 void *cbuserdata)
1040 {
1041         struct ma_info *ma;
1042
1043         ma = (struct ma_info *)cbuserdata;
1044         lprintf(CTDL_DEBUG, "fixed_output_pre() type=<%s>\n", cbtype);
1045         if (!strcasecmp(cbtype, "multipart/alternative")) {
1046                 ++ma->is_ma;
1047                 ma->did_print = 0;
1048                 return;
1049         }
1050 }
1051
1052 /*
1053  * Post callback function for multipart/alternative
1054  */
1055 void fixed_output_post(char *name, char *filename, char *partnum, char *disp,
1056                 void *content, char *cbtype, char *cbcharset, size_t length, char *encoding,
1057                 void *cbuserdata)
1058 {
1059         struct ma_info *ma;
1060
1061         ma = (struct ma_info *)cbuserdata;
1062         lprintf(CTDL_DEBUG, "fixed_output_post() type=<%s>\n", cbtype);
1063         if (!strcasecmp(cbtype, "multipart/alternative")) {
1064                 --ma->is_ma;
1065                 ma->did_print = 0;
1066         return;
1067         }
1068 }
1069
1070 /*
1071  * Inline callback function for mime parser that wants to display text
1072  */
1073 void fixed_output(char *name, char *filename, char *partnum, char *disp,
1074                 void *content, char *cbtype, char *cbcharset, size_t length, char *encoding,
1075                 void *cbuserdata)
1076         {
1077                 char *ptr;
1078                 char *wptr;
1079                 size_t wlen;
1080                 struct ma_info *ma;
1081
1082                 ma = (struct ma_info *)cbuserdata;
1083
1084                 lprintf(CTDL_DEBUG, "fixed_output() type=<%s>\n", cbtype);
1085
1086                 /*
1087                  * If we're in the middle of a multipart/alternative scope and
1088                  * we've already printed another section, skip this one.
1089                  */
1090                 if ( (ma->is_ma == 1) && (ma->did_print == 1) ) {
1091                         lprintf(CTDL_DEBUG, "Skipping part %s (%s)\n", partnum, cbtype);
1092                         return;
1093                 }
1094                 ma->did_print = 1;
1095
1096                 if ( (!strcasecmp(cbtype, "text/plain"))
1097                    || (strlen(cbtype)==0) ) {
1098                         wptr = content;
1099                         if (length > 0) {
1100                                 client_write(wptr, length);
1101                                 if (wptr[length-1] != '\n') {
1102                                         cprintf("\n");
1103                                 }
1104                         }
1105                 }
1106                 else if (!strcasecmp(cbtype, "text/html")) {
1107                         ptr = html_to_ascii(content, 80, 0);
1108                         wlen = strlen(ptr);
1109                         client_write(ptr, wlen);
1110                         if (ptr[wlen-1] != '\n') {
1111                                 cprintf("\n");
1112                         }
1113                         free(ptr);
1114                 }
1115                 else if (strncasecmp(cbtype, "multipart/", 10)) {
1116                         cprintf("Part %s: %s (%s) (%ld bytes)\r\n",
1117                                 partnum, filename, cbtype, (long)length);
1118                 }
1119         }
1120
1121 /*
1122  * The client is elegant and sophisticated and wants to be choosy about
1123  * MIME content types, so figure out which multipart/alternative part
1124  * we're going to send.
1125  */
1126 void choose_preferred(char *name, char *filename, char *partnum, char *disp,
1127                 void *content, char *cbtype, char *cbcharset, size_t length, char *encoding,
1128                 void *cbuserdata)
1129 {
1130         char buf[1024];
1131         int i;
1132         struct ma_info *ma;
1133
1134         ma = (struct ma_info *)cbuserdata;
1135
1136         if (ma->is_ma > 0) {
1137                 for (i=0; i<num_tokens(CC->preferred_formats, '|'); ++i) {
1138                         extract_token(buf, CC->preferred_formats, i, '|', sizeof buf);
1139                         if (!strcasecmp(buf, cbtype)) {
1140                                 strcpy(ma->chosen_part, partnum);
1141                         }
1142                 }
1143         }
1144 }
1145
1146 /*
1147  * Now that we've chosen our preferred part, output it.
1148  */
1149 void output_preferred(char *name, char *filename, char *partnum, char *disp,
1150                 void *content, char *cbtype, char *cbcharset, size_t length, char *encoding,
1151                 void *cbuserdata)
1152 {
1153         int i;
1154         char buf[128];
1155         int add_newline = 0;
1156         char *text_content;
1157         struct ma_info *ma;
1158
1159         ma = (struct ma_info *)cbuserdata;
1160
1161         /* This is not the MIME part you're looking for... */
1162         if (strcasecmp(partnum, ma->chosen_part)) return;
1163
1164         /* If the content-type of this part is in our preferred formats
1165          * list, we can simply output it verbatim.
1166          */
1167         for (i=0; i<num_tokens(CC->preferred_formats, '|'); ++i) {
1168                 extract_token(buf, CC->preferred_formats, i, '|', sizeof buf);
1169                 if (!strcasecmp(buf, cbtype)) {
1170                         /* Yeah!  Go!  W00t!! */
1171
1172                         text_content = (char *)content;
1173                         if (text_content[length-1] != '\n') {
1174                                 ++add_newline;
1175                         }
1176
1177                         cprintf("Content-type: %s", cbtype);
1178                         if (strlen(cbcharset) > 0) {
1179                                 cprintf("; charset=%s", cbcharset);
1180                         }
1181                         cprintf("\nContent-length: %d\n",
1182                                 (int)(length + add_newline) );
1183                         if (strlen(encoding) > 0) {
1184                                 cprintf("Content-transfer-encoding: %s\n", encoding);
1185                         }
1186                         else {
1187                                 cprintf("Content-transfer-encoding: 7bit\n");
1188                         }
1189                         cprintf("\n");
1190                         client_write(content, length);
1191                         if (add_newline) cprintf("\n");
1192                         return;
1193                 }
1194         }
1195
1196         /* No translations required or possible: output as text/plain */
1197         cprintf("Content-type: text/plain\n\n");
1198         fixed_output(name, filename, partnum, disp, content, cbtype, cbcharset,
1199                         length, encoding, cbuserdata);
1200 }
1201
1202
1203 /*
1204  * Get a message off disk.  (returns om_* values found in msgbase.h)
1205  *
1206  */
1207 int CtdlOutputMsg(long msg_num,         /* message number (local) to fetch */
1208                 int mode,               /* how would you like that message? */
1209                 int headers_only,       /* eschew the message body? */
1210                 int do_proto,           /* do Citadel protocol responses? */
1211                 int crlf                /* Use CRLF newlines instead of LF? */
1212 ) {
1213         struct CtdlMessage *TheMessage = NULL;
1214         int retcode = om_no_such_msg;
1215
1216         lprintf(CTDL_DEBUG, "CtdlOutputMsg() msgnum=%ld, mode=%d\n",
1217                 msg_num, mode);
1218
1219         if ((!(CC->logged_in)) && (!(CC->internal_pgm))) {
1220                 if (do_proto) cprintf("%d Not logged in.\n",
1221                         ERROR + NOT_LOGGED_IN);
1222                 return(om_not_logged_in);
1223         }
1224
1225         /* FIXME: check message id against msglist for this room */
1226
1227         /*
1228          * Fetch the message from disk.  If we're in any sort of headers
1229          * only mode, request that we don't even bother loading the body
1230          * into memory.
1231          */
1232         if ( (headers_only == HEADERS_FAST) || (headers_only == HEADERS_ONLY) ) {
1233                 TheMessage = CtdlFetchMessage(msg_num, 0);
1234         }
1235         else {
1236                 TheMessage = CtdlFetchMessage(msg_num, 1);
1237         }
1238
1239         if (TheMessage == NULL) {
1240                 if (do_proto) cprintf("%d Can't locate msg %ld on disk\n",
1241                         ERROR + MESSAGE_NOT_FOUND, msg_num);
1242                 return(om_no_such_msg);
1243         }
1244
1245         retcode = CtdlOutputPreLoadedMsg(
1246                         TheMessage, msg_num, mode,
1247                         headers_only, do_proto, crlf);
1248
1249         CtdlFreeMessage(TheMessage);
1250
1251         return(retcode);
1252 }
1253
1254
1255 /*
1256  * Get a message off disk.  (returns om_* values found in msgbase.h)
1257  *
1258  */
1259 int CtdlOutputPreLoadedMsg(
1260                 struct CtdlMessage *TheMessage,
1261                 long msg_num,
1262                 int mode,               /* how would you like that message? */
1263                 int headers_only,       /* eschew the message body? */
1264                 int do_proto,           /* do Citadel protocol responses? */
1265                 int crlf                /* Use CRLF newlines instead of LF? */
1266 ) {
1267         int i, k;
1268         char buf[SIZ];
1269         cit_uint8_t ch;
1270         char allkeys[30];
1271         char display_name[256];
1272         char *mptr;
1273         char *nl;       /* newline string */
1274         int suppress_f = 0;
1275         int subject_found = 0;
1276         struct ma_info *ma;
1277
1278         /* Buffers needed for RFC822 translation.  These are all filled
1279          * using functions that are bounds-checked, and therefore we can
1280          * make them substantially smaller than SIZ.
1281          */
1282         char suser[100];
1283         char luser[100];
1284         char fuser[100];
1285         char snode[100];
1286         char lnode[100];
1287         char mid[100];
1288         char datestamp[100];
1289
1290         lprintf(CTDL_DEBUG, "CtdlOutputPreLoadedMsg(TheMessage=%s, %ld, %d, %d, %d, %d\n",
1291                 ((TheMessage == NULL) ? "NULL" : "not null"),
1292                 msg_num,
1293                 mode, headers_only, do_proto, crlf);
1294
1295         snprintf(mid, sizeof mid, "%ld", msg_num);
1296         nl = (crlf ? "\r\n" : "\n");
1297
1298         if (!is_valid_message(TheMessage)) {
1299                 lprintf(CTDL_ERR,
1300                         "ERROR: invalid preloaded message for output\n");
1301                 return(om_no_such_msg);
1302         }
1303
1304         /* Are we downloading a MIME component? */
1305         if (mode == MT_DOWNLOAD) {
1306                 if (TheMessage->cm_format_type != FMT_RFC822) {
1307                         if (do_proto)
1308                                 cprintf("%d This is not a MIME message.\n",
1309                                 ERROR + ILLEGAL_VALUE);
1310                 } else if (CC->download_fp != NULL) {
1311                         if (do_proto) cprintf(
1312                                 "%d You already have a download open.\n",
1313                                 ERROR + RESOURCE_BUSY);
1314                 } else {
1315                         /* Parse the message text component */
1316                         mptr = TheMessage->cm_fields['M'];
1317                         ma = malloc(sizeof(struct ma_info));
1318                         memset(ma, 0, sizeof(struct ma_info));
1319                         mime_parser(mptr, NULL, *mime_download, NULL, NULL, (void *)ma, 0);
1320                         free(ma);
1321                         /* If there's no file open by this time, the requested
1322                          * section wasn't found, so print an error
1323                          */
1324                         if (CC->download_fp == NULL) {
1325                                 if (do_proto) cprintf(
1326                                         "%d Section %s not found.\n",
1327                                         ERROR + FILE_NOT_FOUND,
1328                                         CC->download_desired_section);
1329                         }
1330                 }
1331                 return((CC->download_fp != NULL) ? om_ok : om_mime_error);
1332         }
1333
1334         /* now for the user-mode message reading loops */
1335         if (do_proto) cprintf("%d Message %ld:\n", LISTING_FOLLOWS, msg_num);
1336
1337         /* Does the caller want to skip the headers? */
1338         if (headers_only == HEADERS_NONE) goto START_TEXT;
1339
1340         /* Tell the client which format type we're using. */
1341         if ( (mode == MT_CITADEL) && (do_proto) ) {
1342                 cprintf("type=%d\n", TheMessage->cm_format_type);
1343         }
1344
1345         /* nhdr=yes means that we're only displaying headers, no body */
1346         if ( (TheMessage->cm_anon_type == MES_ANONONLY)
1347            && (mode == MT_CITADEL)
1348            && (do_proto)
1349            ) {
1350                 cprintf("nhdr=yes\n");
1351         }
1352
1353         /* begin header processing loop for Citadel message format */
1354
1355         if ((mode == MT_CITADEL) || (mode == MT_MIME)) {
1356
1357                 safestrncpy(display_name, "<unknown>", sizeof display_name);
1358                 if (TheMessage->cm_fields['A']) {
1359                         strcpy(buf, TheMessage->cm_fields['A']);
1360                         if (TheMessage->cm_anon_type == MES_ANONONLY) {
1361                                 safestrncpy(display_name, "****", sizeof display_name);
1362                         }
1363                         else if (TheMessage->cm_anon_type == MES_ANONOPT) {
1364                                 safestrncpy(display_name, "anonymous", sizeof display_name);
1365                         }
1366                         else {
1367                                 safestrncpy(display_name, buf, sizeof display_name);
1368                         }
1369                         if ((is_room_aide())
1370                             && ((TheMessage->cm_anon_type == MES_ANONONLY)
1371                              || (TheMessage->cm_anon_type == MES_ANONOPT))) {
1372                                 size_t tmp = strlen(display_name);
1373                                 snprintf(&display_name[tmp],
1374                                          sizeof display_name - tmp,
1375                                          " [%s]", buf);
1376                         }
1377                 }
1378
1379                 /* Don't show Internet address for users on the
1380                  * local Citadel network.
1381                  */
1382                 suppress_f = 0;
1383                 if (TheMessage->cm_fields['N'] != NULL)
1384                    if (strlen(TheMessage->cm_fields['N']) > 0)
1385                       if (haschar(TheMessage->cm_fields['N'], '.') == 0) {
1386                         suppress_f = 1;
1387                 }
1388
1389                 /* Now spew the header fields in the order we like them. */
1390                 safestrncpy(allkeys, FORDER, sizeof allkeys);
1391                 for (i=0; i<strlen(allkeys); ++i) {
1392                         k = (int) allkeys[i];
1393                         if (k != 'M') {
1394                                 if ( (TheMessage->cm_fields[k] != NULL)
1395                                    && (msgkeys[k] != NULL) ) {
1396                                         if (k == 'A') {
1397                                                 if (do_proto) cprintf("%s=%s\n",
1398                                                         msgkeys[k],
1399                                                         display_name);
1400                                         }
1401                                         else if ((k == 'F') && (suppress_f)) {
1402                                                 /* do nothing */
1403                                         }
1404                                         /* Masquerade display name if needed */
1405                                         else {
1406                                                 if (do_proto) cprintf("%s=%s\n",
1407                                                         msgkeys[k],
1408                                                         TheMessage->cm_fields[k]
1409                                         );
1410                                         }
1411                                 }
1412                         }
1413                 }
1414
1415         }
1416
1417         /* begin header processing loop for RFC822 transfer format */
1418
1419         strcpy(suser, "");
1420         strcpy(luser, "");
1421         strcpy(fuser, "");
1422         strcpy(snode, NODENAME);
1423         strcpy(lnode, HUMANNODE);
1424         if (mode == MT_RFC822) {
1425                 for (i = 0; i < 256; ++i) {
1426                         if (TheMessage->cm_fields[i]) {
1427                                 mptr = TheMessage->cm_fields[i];
1428
1429                                 if (i == 'A') {
1430                                         safestrncpy(luser, mptr, sizeof luser);
1431                                         safestrncpy(suser, mptr, sizeof suser);
1432                                 }
1433                                 else if (i == 'Y') {
1434                                         cprintf("CC: %s%s", mptr, nl);
1435                                 }
1436                                 else if (i == 'U') {
1437                                         cprintf("Subject: %s%s", mptr, nl);
1438                                         subject_found = 1;
1439                                 }
1440                                 else if (i == 'I')
1441                                         safestrncpy(mid, mptr, sizeof mid);
1442                                 else if (i == 'H')
1443                                         safestrncpy(lnode, mptr, sizeof lnode);
1444                                 else if (i == 'F')
1445                                         safestrncpy(fuser, mptr, sizeof fuser);
1446                                 /* else if (i == 'O')
1447                                         cprintf("X-Citadel-Room: %s%s",
1448                                                 mptr, nl); */
1449                                 else if (i == 'N')
1450                                         safestrncpy(snode, mptr, sizeof snode);
1451                                 else if (i == 'R')
1452                                         cprintf("To: %s%s", mptr, nl);
1453                                 else if (i == 'T') {
1454                                         datestring(datestamp, sizeof datestamp,
1455                                                 atol(mptr), DATESTRING_RFC822);
1456                                         cprintf("Date: %s%s", datestamp, nl);
1457                                 }
1458                         }
1459                 }
1460                 if (subject_found == 0) {
1461                         cprintf("Subject: (no subject)%s", nl);
1462                 }
1463         }
1464
1465         for (i=0; i<strlen(suser); ++i) {
1466                 suser[i] = tolower(suser[i]);
1467                 if (!isalnum(suser[i])) suser[i]='_';
1468         }
1469
1470         if (mode == MT_RFC822) {
1471                 if (!strcasecmp(snode, NODENAME)) {
1472                         safestrncpy(snode, FQDN, sizeof snode);
1473                 }
1474
1475                 /* Construct a fun message id */
1476                 cprintf("Message-ID: <%s", mid);
1477                 if (strchr(mid, '@')==NULL) {
1478                         cprintf("@%s", snode);
1479                 }
1480                 cprintf(">%s", nl);
1481
1482                 if (!is_room_aide() && (TheMessage->cm_anon_type == MES_ANONONLY)) {
1483                         cprintf("From: \"----\" <x@x.org>%s", nl);
1484                 }
1485                 else if (!is_room_aide() && (TheMessage->cm_anon_type == MES_ANONOPT)) {
1486                         cprintf("From: \"anonymous\" <x@x.org>%s", nl);
1487                 }
1488                 else if (strlen(fuser) > 0) {
1489                         cprintf("From: \"%s\" <%s>%s", luser, fuser, nl);
1490                 }
1491                 else {
1492                         cprintf("From: \"%s\" <%s@%s>%s", luser, suser, snode, nl);
1493                 }
1494
1495                 cprintf("Organization: %s%s", lnode, nl);
1496
1497                 /* Blank line signifying RFC822 end-of-headers */
1498                 if (TheMessage->cm_format_type != FMT_RFC822) {
1499                         cprintf("%s", nl);
1500                 }
1501         }
1502
1503         /* end header processing loop ... at this point, we're in the text */
1504 START_TEXT:
1505         if (headers_only == HEADERS_FAST) goto DONE;
1506         mptr = TheMessage->cm_fields['M'];
1507
1508         /* Tell the client about the MIME parts in this message */
1509         if (TheMessage->cm_format_type == FMT_RFC822) {
1510                 if ( (mode == MT_CITADEL) || (mode == MT_MIME) ) {
1511                         mime_parser(mptr, NULL,
1512                                 (do_proto ? *list_this_part : NULL),
1513                                 (do_proto ? *list_this_pref : NULL),
1514                                 (do_proto ? *list_this_suff : NULL),
1515                                 NULL, 0);
1516                 }
1517                 else if (mode == MT_RFC822) {   /* unparsed RFC822 dump */
1518                         /* FIXME ... we have to put some code in here to avoid
1519                          * printing duplicate header information when both
1520                          * Citadel and RFC822 headers exist.  Preference should
1521                          * probably be given to the RFC822 headers.
1522                          */
1523                         int done_rfc822_hdrs = 0;
1524                         while (ch=*(mptr++), ch!=0) {
1525                                 if (ch==13) {
1526                                         /* do nothing */
1527                                 }
1528                                 else if (ch==10) {
1529                                         if (!done_rfc822_hdrs) {
1530                                                 if (headers_only != HEADERS_NONE) {
1531                                                         cprintf("%s", nl);
1532                                                 }
1533                                         }
1534                                         else {
1535                                                 if (headers_only != HEADERS_ONLY) {
1536                                                         cprintf("%s", nl);
1537                                                 }
1538                                         }
1539                                         if ((*(mptr) == 13) || (*(mptr) == 10)) {
1540                                                 done_rfc822_hdrs = 1;
1541                                         }
1542                                 }
1543                                 else {
1544                                         if (done_rfc822_hdrs) {
1545                                                 if (headers_only != HEADERS_NONE) {
1546                                                         cprintf("%c", ch);
1547                                                 }
1548                                         }
1549                                         else {
1550                                                 if (headers_only != HEADERS_ONLY) {
1551                                                         cprintf("%c", ch);
1552                                                 }
1553                                         }
1554                                         if ((*mptr == 13) || (*mptr == 10)) {
1555                                                 done_rfc822_hdrs = 1;
1556                                         }
1557                                 }
1558                         }
1559                         goto DONE;
1560                 }
1561         }
1562
1563         if (headers_only == HEADERS_ONLY) {
1564                 goto DONE;
1565         }
1566
1567         /* signify start of msg text */
1568         if ( (mode == MT_CITADEL) || (mode == MT_MIME) ) {
1569                 if (do_proto) cprintf("text\n");
1570         }
1571
1572         /* If the format type on disk is 1 (fixed-format), then we want
1573          * everything to be output completely literally ... regardless of
1574          * what message transfer format is in use.
1575          */
1576         if (TheMessage->cm_format_type == FMT_FIXED) {
1577                 if (mode == MT_MIME) {
1578                         cprintf("Content-type: text/plain\n\n");
1579                 }
1580                 strcpy(buf, "");
1581                 while (ch = *mptr++, ch > 0) {
1582                         if (ch == 13)
1583                                 ch = 10;
1584                         if ((ch == 10) || (strlen(buf) > 250)) {
1585                                 cprintf("%s%s", buf, nl);
1586                                 strcpy(buf, "");
1587                         } else {
1588                                 buf[strlen(buf) + 1] = 0;
1589                                 buf[strlen(buf)] = ch;
1590                         }
1591                 }
1592                 if (strlen(buf) > 0)
1593                         cprintf("%s%s", buf, nl);
1594         }
1595
1596         /* If the message on disk is format 0 (Citadel vari-format), we
1597          * output using the formatter at 80 columns.  This is the final output
1598          * form if the transfer format is RFC822, but if the transfer format
1599          * is Citadel proprietary, it'll still work, because the indentation
1600          * for new paragraphs is correct and the client will reformat the
1601          * message to the reader's screen width.
1602          */
1603         if (TheMessage->cm_format_type == FMT_CITADEL) {
1604                 if (mode == MT_MIME) {
1605                         cprintf("Content-type: text/x-citadel-variformat\n\n");
1606                 }
1607                 memfmout(80, mptr, 0, nl);
1608         }
1609
1610         /* If the message on disk is format 4 (MIME), we've gotta hand it
1611          * off to the MIME parser.  The client has already been told that
1612          * this message is format 1 (fixed format), so the callback function
1613          * we use will display those parts as-is.
1614          */
1615         if (TheMessage->cm_format_type == FMT_RFC822) {
1616                 ma = malloc(sizeof(struct ma_info));
1617                 memset(ma, 0, sizeof(struct ma_info));
1618
1619                 if (mode == MT_MIME) {
1620                         strcpy(ma->chosen_part, "1");
1621                         mime_parser(mptr, NULL,
1622                                 *choose_preferred, *fixed_output_pre,
1623                                 *fixed_output_post, (void *)ma, 0);
1624                         mime_parser(mptr, NULL,
1625                                 *output_preferred, NULL, NULL, (void *)ma, 0);
1626                 }
1627                 else {
1628                         mime_parser(mptr, NULL,
1629                                 *fixed_output, *fixed_output_pre,
1630                                 *fixed_output_post, (void *)ma, 0);
1631                 }
1632
1633                 free(ma);
1634         }
1635
1636 DONE:   /* now we're done */
1637         if (do_proto) cprintf("000\n");
1638         return(om_ok);
1639 }
1640
1641
1642
1643 /*
1644  * display a message (mode 0 - Citadel proprietary)
1645  */
1646 void cmd_msg0(char *cmdbuf)
1647 {
1648         long msgid;
1649         int headers_only = HEADERS_ALL;
1650
1651         msgid = extract_long(cmdbuf, 0);
1652         headers_only = extract_int(cmdbuf, 1);
1653
1654         CtdlOutputMsg(msgid, MT_CITADEL, headers_only, 1, 0);
1655         return;
1656 }
1657
1658
1659 /*
1660  * display a message (mode 2 - RFC822)
1661  */
1662 void cmd_msg2(char *cmdbuf)
1663 {
1664         long msgid;
1665         int headers_only = HEADERS_ALL;
1666
1667         msgid = extract_long(cmdbuf, 0);
1668         headers_only = extract_int(cmdbuf, 1);
1669
1670         CtdlOutputMsg(msgid, MT_RFC822, headers_only, 1, 1);
1671 }
1672
1673
1674
1675 /*
1676  * display a message (mode 3 - IGnet raw format - internal programs only)
1677  */
1678 void cmd_msg3(char *cmdbuf)
1679 {
1680         long msgnum;
1681         struct CtdlMessage *msg;
1682         struct ser_ret smr;
1683
1684         if (CC->internal_pgm == 0) {
1685                 cprintf("%d This command is for internal programs only.\n",
1686                         ERROR + HIGHER_ACCESS_REQUIRED);
1687                 return;
1688         }
1689
1690         msgnum = extract_long(cmdbuf, 0);
1691         msg = CtdlFetchMessage(msgnum, 1);
1692         if (msg == NULL) {
1693                 cprintf("%d Message %ld not found.\n",
1694                         ERROR + MESSAGE_NOT_FOUND, msgnum);
1695                 return;
1696         }
1697
1698         serialize_message(&smr, msg);
1699         CtdlFreeMessage(msg);
1700
1701         if (smr.len == 0) {
1702                 cprintf("%d Unable to serialize message\n",
1703                         ERROR + INTERNAL_ERROR);
1704                 return;
1705         }
1706
1707         cprintf("%d %ld\n", BINARY_FOLLOWS, (long)smr.len);
1708         client_write((char *)smr.ser, (int)smr.len);
1709         free(smr.ser);
1710 }
1711
1712
1713
1714 /*
1715  * Display a message using MIME content types
1716  */
1717 void cmd_msg4(char *cmdbuf)
1718 {
1719         long msgid;
1720
1721         msgid = extract_long(cmdbuf, 0);
1722         CtdlOutputMsg(msgid, MT_MIME, 0, 1, 0);
1723 }
1724
1725
1726
1727 /*
1728  * Client tells us its preferred message format(s)
1729  */
1730 void cmd_msgp(char *cmdbuf)
1731 {
1732         safestrncpy(CC->preferred_formats, cmdbuf,
1733                         sizeof(CC->preferred_formats));
1734         cprintf("%d ok\n", CIT_OK);
1735 }
1736
1737
1738 /*
1739  * Open a component of a MIME message as a download file
1740  */
1741 void cmd_opna(char *cmdbuf)
1742 {
1743         long msgid;
1744         char desired_section[128];
1745
1746         msgid = extract_long(cmdbuf, 0);
1747         extract_token(desired_section, cmdbuf, 1, '|', sizeof desired_section);
1748         safestrncpy(CC->download_desired_section, desired_section, sizeof CC->download_desired_section);
1749         CtdlOutputMsg(msgid, MT_DOWNLOAD, 0, 1, 1);
1750 }
1751
1752
1753 /*
1754  * Save a message pointer into a specified room
1755  * (Returns 0 for success, nonzero for failure)
1756  * roomname may be NULL to use the current room
1757  */
1758 int CtdlSaveMsgPointerInRoom(char *roomname, long msgid, int flags) {
1759         int i;
1760         char hold_rm[ROOMNAMELEN];
1761         struct cdbdata *cdbfr;
1762         int num_msgs;
1763         long *msglist;
1764         long highest_msg = 0L;
1765         struct CtdlMessage *msg = NULL;
1766
1767         lprintf(CTDL_DEBUG, "CtdlSaveMsgPointerInRoom(%s, %ld, %d)\n",
1768                 roomname, msgid, flags);
1769
1770         strcpy(hold_rm, CC->room.QRname);
1771
1772         /* We may need to check to see if this message is real */
1773         if (  (flags & SM_VERIFY_GOODNESS)
1774            || (flags & SM_DO_REPL_CHECK)
1775            ) {
1776                 msg = CtdlFetchMessage(msgid, 1);
1777                 if (msg == NULL) return(ERROR + ILLEGAL_VALUE);
1778         }
1779
1780         /* Perform replication checks if necessary */
1781         if ( (flags & SM_DO_REPL_CHECK) && (msg != NULL) ) {
1782
1783                 if (getroom(&CC->room,
1784                    ((roomname != NULL) ? roomname : CC->room.QRname) )
1785                    != 0) {
1786                         lprintf(CTDL_ERR, "No such room <%s>\n", roomname);
1787                         if (msg != NULL) CtdlFreeMessage(msg);
1788                         return(ERROR + ROOM_NOT_FOUND);
1789                 }
1790
1791                 if (ReplicationChecks(msg) != 0) {
1792                         getroom(&CC->room, hold_rm);
1793                         if (msg != NULL) CtdlFreeMessage(msg);
1794                         lprintf(CTDL_DEBUG,
1795                                 "Did replication, and newer exists\n");
1796                         return(0);
1797                 }
1798         }
1799
1800         /* Now the regular stuff */
1801         if (lgetroom(&CC->room,
1802            ((roomname != NULL) ? roomname : CC->room.QRname) )
1803            != 0) {
1804                 lprintf(CTDL_ERR, "No such room <%s>\n", roomname);
1805                 if (msg != NULL) CtdlFreeMessage(msg);
1806                 return(ERROR + ROOM_NOT_FOUND);
1807         }
1808
1809         cdbfr = cdb_fetch(CDB_MSGLISTS, &CC->room.QRnumber, sizeof(long));
1810         if (cdbfr == NULL) {
1811                 msglist = NULL;
1812                 num_msgs = 0;
1813         } else {
1814                 msglist = malloc(cdbfr->len);
1815                 if (msglist == NULL)
1816                         lprintf(CTDL_ALERT, "ERROR malloc msglist!\n");
1817                 num_msgs = cdbfr->len / sizeof(long);
1818                 memcpy(msglist, cdbfr->ptr, cdbfr->len);
1819                 cdb_free(cdbfr);
1820         }
1821
1822
1823         /* Make sure the message doesn't already exist in this room.  It
1824          * is absolutely taboo to have more than one reference to the same
1825          * message in a room.
1826          */
1827         if (num_msgs > 0) for (i=0; i<num_msgs; ++i) {
1828                 if (msglist[i] == msgid) {
1829                         lputroom(&CC->room);    /* unlock the room */
1830                         getroom(&CC->room, hold_rm);
1831                         if (msg != NULL) CtdlFreeMessage(msg);
1832                         free(msglist);
1833                         return(ERROR + ALREADY_EXISTS);
1834                 }
1835         }
1836
1837         /* Now add the new message */
1838         ++num_msgs;
1839         msglist = realloc(msglist, (num_msgs * sizeof(long)));
1840
1841         if (msglist == NULL) {
1842                 lprintf(CTDL_ALERT, "ERROR: can't realloc message list!\n");
1843         }
1844         msglist[num_msgs - 1] = msgid;
1845
1846         /* Sort the message list, so all the msgid's are in order */
1847         num_msgs = sort_msglist(msglist, num_msgs);
1848
1849         /* Determine the highest message number */
1850         highest_msg = msglist[num_msgs - 1];
1851
1852         /* Write it back to disk. */
1853         cdb_store(CDB_MSGLISTS, &CC->room.QRnumber, (int)sizeof(long),
1854                   msglist, (int)(num_msgs * sizeof(long)));
1855
1856         /* Free up the memory we used. */
1857         free(msglist);
1858
1859         /* Update the highest-message pointer and unlock the room. */
1860         CC->room.QRhighest = highest_msg;
1861         lputroom(&CC->room);
1862         getroom(&CC->room, hold_rm);
1863
1864         /* Bump the reference count for this message. */
1865         if ((flags & SM_DONT_BUMP_REF)==0) {
1866                 AdjRefCount(msgid, +1);
1867         }
1868
1869         /* Return success. */
1870         if (msg != NULL) CtdlFreeMessage(msg);
1871         return (0);
1872 }
1873
1874
1875
1876 /*
1877  * Message base operation to save a new message to the message store
1878  * (returns new message number)
1879  *
1880  * This is the back end for CtdlSubmitMsg() and should not be directly
1881  * called by server-side modules.
1882  *
1883  */
1884 long send_message(struct CtdlMessage *msg) {
1885         long newmsgid;
1886         long retval;
1887         char msgidbuf[256];
1888         struct ser_ret smr;
1889         int is_bigmsg = 0;
1890         char *holdM = NULL;
1891
1892         /* Get a new message number */
1893         newmsgid = get_new_message_number();
1894         snprintf(msgidbuf, sizeof msgidbuf, "%ld@%s", newmsgid, config.c_fqdn);
1895
1896         /* Generate an ID if we don't have one already */
1897         if (msg->cm_fields['I']==NULL) {
1898                 msg->cm_fields['I'] = strdup(msgidbuf);
1899         }
1900
1901         /* If the message is big, set its body aside for storage elsewhere */
1902         if (msg->cm_fields['M'] != NULL) {
1903                 if (strlen(msg->cm_fields['M']) > BIGMSG) {
1904                         is_bigmsg = 1;
1905                         holdM = msg->cm_fields['M'];
1906                         msg->cm_fields['M'] = NULL;
1907                 }
1908         }
1909
1910         /* Serialize our data structure for storage in the database */
1911         serialize_message(&smr, msg);
1912
1913         if (is_bigmsg) {
1914                 msg->cm_fields['M'] = holdM;
1915         }
1916
1917         if (smr.len == 0) {
1918                 cprintf("%d Unable to serialize message\n",
1919                         ERROR + INTERNAL_ERROR);
1920                 return (-1L);
1921         }
1922
1923         /* Write our little bundle of joy into the message base */
1924         if (cdb_store(CDB_MSGMAIN, &newmsgid, (int)sizeof(long),
1925                       smr.ser, smr.len) < 0) {
1926                 lprintf(CTDL_ERR, "Can't store message\n");
1927                 retval = 0L;
1928         } else {
1929                 if (is_bigmsg) {
1930                         cdb_store(CDB_BIGMSGS,
1931                                 &newmsgid,
1932                                 (int)sizeof(long),
1933                                 holdM,
1934                                 (strlen(holdM) + 1)
1935                         );
1936                 }
1937                 retval = newmsgid;
1938         }
1939
1940         /* Free the memory we used for the serialized message */
1941         free(smr.ser);
1942
1943         /* Return the *local* message ID to the caller
1944          * (even if we're storing an incoming network message)
1945          */
1946         return(retval);
1947 }
1948
1949
1950
1951 /*
1952  * Serialize a struct CtdlMessage into the format used on disk and network.
1953  *
1954  * This function loads up a "struct ser_ret" (defined in server.h) which
1955  * contains the length of the serialized message and a pointer to the
1956  * serialized message in memory.  THE LATTER MUST BE FREED BY THE CALLER.
1957  */
1958 void serialize_message(struct ser_ret *ret,             /* return values */
1959                         struct CtdlMessage *msg)        /* unserialized msg */
1960 {
1961         size_t wlen;
1962         int i;
1963         static char *forder = FORDER;
1964
1965         if (is_valid_message(msg) == 0) return;         /* self check */
1966
1967         ret->len = 3;
1968         for (i=0; i<26; ++i) if (msg->cm_fields[(int)forder[i]] != NULL)
1969                 ret->len = ret->len +
1970                         strlen(msg->cm_fields[(int)forder[i]]) + 2;
1971
1972         lprintf(CTDL_DEBUG, "serialize_message() calling malloc(%ld)\n", (long)ret->len);
1973         ret->ser = malloc(ret->len);
1974         if (ret->ser == NULL) {
1975                 ret->len = 0;
1976                 return;
1977         }
1978
1979         ret->ser[0] = 0xFF;
1980         ret->ser[1] = msg->cm_anon_type;
1981         ret->ser[2] = msg->cm_format_type;
1982         wlen = 3;
1983
1984         for (i=0; i<26; ++i) if (msg->cm_fields[(int)forder[i]] != NULL) {
1985                 ret->ser[wlen++] = (char)forder[i];
1986                 strcpy((char *)&ret->ser[wlen], msg->cm_fields[(int)forder[i]]);
1987                 wlen = wlen + strlen(msg->cm_fields[(int)forder[i]]) + 1;
1988         }
1989         if (ret->len != wlen) lprintf(CTDL_ERR, "ERROR: len=%ld wlen=%ld\n",
1990                 (long)ret->len, (long)wlen);
1991
1992         return;
1993 }
1994
1995
1996
1997 /*
1998  * Back end for the ReplicationChecks() function
1999  */
2000 void check_repl(long msgnum, void *userdata) {
2001         lprintf(CTDL_DEBUG, "check_repl() replacing message %ld\n", msgnum);
2002         CtdlDeleteMessages(CC->room.QRname, msgnum, "", 0);
2003 }
2004
2005
2006 /*
2007  * Check to see if any messages already exist which carry the same Exclusive ID
2008  * as this one.  If any are found, delete them.
2009  *
2010  */
2011 int ReplicationChecks(struct CtdlMessage *msg) {
2012         struct CtdlMessage *template;
2013         int abort_this = 0;
2014
2015         /* No exclusive id?  Don't do anything. */
2016         if (msg->cm_fields['E'] == NULL) return 0;
2017         if (strlen(msg->cm_fields['E']) == 0) return 0;
2018         lprintf(CTDL_DEBUG, "Exclusive ID: <%s>\n", msg->cm_fields['E']);
2019
2020         template = (struct CtdlMessage *) malloc(sizeof(struct CtdlMessage));
2021         memset(template, 0, sizeof(struct CtdlMessage));
2022         template->cm_fields['E'] = strdup(msg->cm_fields['E']);
2023
2024         CtdlForEachMessage(MSGS_ALL, 0L, NULL, template, check_repl, NULL);
2025
2026         CtdlFreeMessage(template);
2027         lprintf(CTDL_DEBUG, "ReplicationChecks() returning %d\n", abort_this);
2028         return(abort_this);
2029 }
2030
2031
2032
2033 /*
2034  * Turn an arbitrary RFC822 address into a struct vCard for possible
2035  * inclusion into an address book.
2036  */
2037 struct vCard *vcard_new_from_rfc822_addr(char *addr) {
2038         struct vCard *v;
2039         char user[256], node[256], name[256], email[256], n[256];
2040
2041         v = vcard_new();
2042         if (v == NULL) return(NULL);
2043
2044         process_rfc822_addr(addr, user, node, name);
2045         vcard_set_prop(v, "fn", name, 0);
2046
2047         vcard_fn_to_n(n, name, sizeof n);
2048         vcard_set_prop(v, "n", n, 0);
2049
2050         snprintf(email, sizeof email, "%s@%s", user, node);
2051         vcard_set_prop(v, "email;internet", email, 0);
2052
2053         return(v);
2054 }
2055
2056
2057 /*
2058  * Save a message to disk and submit it into the delivery system.
2059  */
2060 long CtdlSubmitMsg(struct CtdlMessage *msg,     /* message to save */
2061                 struct recptypes *recps,        /* recipients (if mail) */
2062                 char *force                     /* force a particular room? */
2063 ) {
2064         char submit_filename[128];
2065         char generated_timestamp[32];
2066         char hold_rm[ROOMNAMELEN];
2067         char actual_rm[ROOMNAMELEN];
2068         char force_room[ROOMNAMELEN];
2069         char content_type[SIZ];                 /* We have to learn this */
2070         char recipient[SIZ];
2071         long newmsgid;
2072         char *mptr = NULL;
2073         struct ctdluser userbuf;
2074         int a, i, j;
2075         struct MetaData smi;
2076         FILE *network_fp = NULL;
2077         static int seqnum = 1;
2078         struct CtdlMessage *imsg = NULL;
2079         struct CtdlMessage *vmsg = NULL;
2080         long vmsgnum = (-1L);
2081         char *ser = NULL;
2082         struct vCard *v = NULL;
2083         char *instr;
2084         struct ser_ret smr;
2085         char *hold_R, *hold_D;
2086         char *collected_addresses = NULL;
2087
2088         lprintf(CTDL_DEBUG, "CtdlSubmitMsg() called\n");
2089         if (is_valid_message(msg) == 0) return(-1);     /* self check */
2090
2091         /* If this message has no timestamp, we take the liberty of
2092          * giving it one, right now.
2093          */
2094         if (msg->cm_fields['T'] == NULL) {
2095                 lprintf(CTDL_DEBUG, "Generating timestamp\n");
2096                 snprintf(generated_timestamp, sizeof generated_timestamp, "%ld", (long)time(NULL));
2097                 msg->cm_fields['T'] = strdup(generated_timestamp);
2098         }
2099
2100         /* If this message has no path, we generate one.
2101          */
2102         if (msg->cm_fields['P'] == NULL) {
2103                 lprintf(CTDL_DEBUG, "Generating path\n");
2104                 if (msg->cm_fields['A'] != NULL) {
2105                         msg->cm_fields['P'] = strdup(msg->cm_fields['A']);
2106                         for (a=0; a<strlen(msg->cm_fields['P']); ++a) {
2107                                 if (isspace(msg->cm_fields['P'][a])) {
2108                                         msg->cm_fields['P'][a] = ' ';
2109                                 }
2110                         }
2111                 }
2112                 else {
2113                         msg->cm_fields['P'] = strdup("unknown");
2114                 }
2115         }
2116
2117         if (force == NULL) {
2118                 strcpy(force_room, "");
2119         }
2120         else {
2121                 strcpy(force_room, force);
2122         }
2123
2124         /* Learn about what's inside, because it's what's inside that counts */
2125         lprintf(CTDL_DEBUG, "Learning what's inside\n");
2126         if (msg->cm_fields['M'] == NULL) {
2127                 lprintf(CTDL_ERR, "ERROR: attempt to save message with NULL body\n");
2128                 return(-2);
2129         }
2130
2131         switch (msg->cm_format_type) {
2132         case 0:
2133                 strcpy(content_type, "text/x-citadel-variformat");
2134                 break;
2135         case 1:
2136                 strcpy(content_type, "text/plain");
2137                 break;
2138         case 4:
2139                 strcpy(content_type, "text/plain");
2140                 mptr = bmstrcasestr(msg->cm_fields['M'], "Content-type: ");
2141                 if (mptr != NULL) {
2142                         safestrncpy(content_type, &mptr[14],
2143                                         sizeof content_type);
2144                         for (a = 0; a < strlen(content_type); ++a) {
2145                                 if ((content_type[a] == ';')
2146                                     || (content_type[a] == ' ')
2147                                     || (content_type[a] == 13)
2148                                     || (content_type[a] == 10)) {
2149                                         content_type[a] = 0;
2150                                 }
2151                         }
2152                 }
2153         }
2154
2155         /* Goto the correct room */
2156         lprintf(CTDL_DEBUG, "Selected room %s\n",
2157                 (recps) ? CC->room.QRname : SENTITEMS);
2158         strcpy(hold_rm, CC->room.QRname);
2159         strcpy(actual_rm, CC->room.QRname);
2160         if (recps != NULL) {
2161                 strcpy(actual_rm, SENTITEMS);
2162         }
2163
2164         /* If the user is a twit, move to the twit room for posting */
2165         lprintf(CTDL_DEBUG, "Handling twit stuff: %s\n",
2166                         (CC->user.axlevel == 2) ? config.c_twitroom : "OK");
2167         if (TWITDETECT) {
2168                 if (CC->user.axlevel == 2) {
2169                         strcpy(hold_rm, actual_rm);
2170                         strcpy(actual_rm, config.c_twitroom);
2171                 }
2172         }
2173
2174         /* ...or if this message is destined for Aide> then go there. */
2175         if (strlen(force_room) > 0) {
2176                 strcpy(actual_rm, force_room);
2177         }
2178
2179         lprintf(CTDL_DEBUG, "Final selection: %s\n", actual_rm);
2180         if (strcasecmp(actual_rm, CC->room.QRname)) {
2181                 /* getroom(&CC->room, actual_rm); */
2182                 usergoto(actual_rm, 0, 1, NULL, NULL);
2183         }
2184
2185         /*
2186          * If this message has no O (room) field, generate one.
2187          */
2188         if (msg->cm_fields['O'] == NULL) {
2189                 msg->cm_fields['O'] = strdup(CC->room.QRname);
2190         }
2191
2192         /* Perform "before save" hooks (aborting if any return nonzero) */
2193         lprintf(CTDL_DEBUG, "Performing before-save hooks\n");
2194         if (PerformMessageHooks(msg, EVT_BEFORESAVE) > 0) return(-3);
2195
2196         /* If this message has an Exclusive ID, perform replication checks */
2197         lprintf(CTDL_DEBUG, "Performing replication checks\n");
2198         if (ReplicationChecks(msg) > 0) return(-4);
2199
2200         /* Save it to disk */
2201         lprintf(CTDL_DEBUG, "Saving to disk\n");
2202         newmsgid = send_message(msg);
2203         if (newmsgid <= 0L) return(-5);
2204
2205         /* Write a supplemental message info record.  This doesn't have to
2206          * be a critical section because nobody else knows about this message
2207          * yet.
2208          */
2209         lprintf(CTDL_DEBUG, "Creating MetaData record\n");
2210         memset(&smi, 0, sizeof(struct MetaData));
2211         smi.meta_msgnum = newmsgid;
2212         smi.meta_refcount = 0;
2213         safestrncpy(smi.meta_content_type, content_type,
2214                         sizeof smi.meta_content_type);
2215
2216         /* As part of the new metadata record, measure how
2217          * big this message will be when displayed as RFC822.
2218          * Both POP and IMAP use this, and it's best to just take the hit now
2219          * instead of having to potentially measure thousands of messages when
2220          * a mailbox is opened later.
2221          */
2222
2223         if (CC->redirect_buffer != NULL) {
2224                 lprintf(CTDL_ALERT, "CC->redirect_buffer is not NULL during message submission!\n");
2225                 abort();
2226         }
2227         CC->redirect_buffer = malloc(SIZ);
2228         CC->redirect_len = 0;
2229         CC->redirect_alloc = SIZ;
2230         CtdlOutputPreLoadedMsg(msg, 0L, MT_RFC822, HEADERS_ALL, 0, 1);
2231         smi.meta_rfc822_length = CC->redirect_len;
2232         free(CC->redirect_buffer);
2233         CC->redirect_buffer = NULL;
2234         CC->redirect_len = 0;
2235         CC->redirect_alloc = 0;
2236
2237         PutMetaData(&smi);
2238
2239         /* Now figure out where to store the pointers */
2240         lprintf(CTDL_DEBUG, "Storing pointers\n");
2241
2242         /* If this is being done by the networker delivering a private
2243          * message, we want to BYPASS saving the sender's copy (because there
2244          * is no local sender; it would otherwise go to the Trashcan).
2245          */
2246         if ((!CC->internal_pgm) || (recps == NULL)) {
2247                 if (CtdlSaveMsgPointerInRoom(actual_rm, newmsgid, 0) != 0) {
2248                         lprintf(CTDL_ERR, "ERROR saving message pointer!\n");
2249                         CtdlSaveMsgPointerInRoom(config.c_aideroom,
2250                                                         newmsgid, 0);
2251                 }
2252         }
2253
2254         /* For internet mail, drop a copy in the outbound queue room */
2255         if (recps != NULL)
2256          if (recps->num_internet > 0) {
2257                 CtdlSaveMsgPointerInRoom(SMTP_SPOOLOUT_ROOM, newmsgid, 0);
2258         }
2259
2260         /* If other rooms are specified, drop them there too. */
2261         if (recps != NULL)
2262          if (recps->num_room > 0)
2263           for (i=0; i<num_tokens(recps->recp_room, '|'); ++i) {
2264                 extract_token(recipient, recps->recp_room, i,
2265                                         '|', sizeof recipient);
2266                 lprintf(CTDL_DEBUG, "Delivering to room <%s>\n", recipient);
2267                 CtdlSaveMsgPointerInRoom(recipient, newmsgid, 0);
2268         }
2269
2270         /* Bump this user's messages posted counter. */
2271         lprintf(CTDL_DEBUG, "Updating user\n");
2272         lgetuser(&CC->user, CC->curr_user);
2273         CC->user.posted = CC->user.posted + 1;
2274         lputuser(&CC->user);
2275
2276         /* If this is private, local mail, make a copy in the
2277          * recipient's mailbox and bump the reference count.
2278          */
2279         if (recps != NULL)
2280          if (recps->num_local > 0)
2281           for (i=0; i<num_tokens(recps->recp_local, '|'); ++i) {
2282                 extract_token(recipient, recps->recp_local, i,
2283                                         '|', sizeof recipient);
2284                 lprintf(CTDL_DEBUG, "Delivering private local mail to <%s>\n",
2285                         recipient);
2286                 if (getuser(&userbuf, recipient) == 0) {
2287                         MailboxName(actual_rm, sizeof actual_rm,
2288                                         &userbuf, MAILROOM);
2289                         CtdlSaveMsgPointerInRoom(actual_rm, newmsgid, 0);
2290                         BumpNewMailCounter(userbuf.usernum);
2291                 }
2292                 else {
2293                         lprintf(CTDL_DEBUG, "No user <%s>\n", recipient);
2294                         CtdlSaveMsgPointerInRoom(config.c_aideroom,
2295                                                         newmsgid, 0);
2296                 }
2297         }
2298
2299         /* Perform "after save" hooks */
2300         lprintf(CTDL_DEBUG, "Performing after-save hooks\n");
2301         PerformMessageHooks(msg, EVT_AFTERSAVE);
2302
2303         /* For IGnet mail, we have to save a new copy into the spooler for
2304          * each recipient, with the R and D fields set to the recipient and
2305          * destination-node.  This has two ugly side effects: all other
2306          * recipients end up being unlisted in this recipient's copy of the
2307          * message, and it has to deliver multiple messages to the same
2308          * node.  We'll revisit this again in a year or so when everyone has
2309          * a network spool receiver that can handle the new style messages.
2310          */
2311         if (recps != NULL)
2312          if (recps->num_ignet > 0)
2313           for (i=0; i<num_tokens(recps->recp_ignet, '|'); ++i) {
2314                 extract_token(recipient, recps->recp_ignet, i,
2315                                 '|', sizeof recipient);
2316
2317                 hold_R = msg->cm_fields['R'];
2318                 hold_D = msg->cm_fields['D'];
2319                 msg->cm_fields['R'] = malloc(SIZ);
2320                 msg->cm_fields['D'] = malloc(128);
2321                 extract_token(msg->cm_fields['R'], recipient, 0, '@', SIZ);
2322                 extract_token(msg->cm_fields['D'], recipient, 1, '@', 128);
2323
2324                 serialize_message(&smr, msg);
2325                 if (smr.len > 0) {
2326                         snprintf(submit_filename, sizeof submit_filename,
2327 #ifndef HAVE_SPOOL_DIR
2328                                          "."
2329 #else
2330                                          SPOOL_DIR
2331 #endif
2332                                          "/network/spoolin/netmail.%04lx.%04x.%04x",
2333                                          (long) getpid(), CC->cs_pid, ++seqnum);
2334                         network_fp = fopen(submit_filename, "wb+");
2335                         if (network_fp != NULL) {
2336                                 fwrite(smr.ser, smr.len, 1, network_fp);
2337                                 fclose(network_fp);
2338                         }
2339                         free(smr.ser);
2340                 }
2341
2342                 free(msg->cm_fields['R']);
2343                 free(msg->cm_fields['D']);
2344                 msg->cm_fields['R'] = hold_R;
2345                 msg->cm_fields['D'] = hold_D;
2346         }
2347
2348         /* Go back to the room we started from */
2349         lprintf(CTDL_DEBUG, "Returning to original room %s\n", hold_rm);
2350         if (strcasecmp(hold_rm, CC->room.QRname))
2351                 /* getroom(&CC->room, hold_rm); */
2352                 usergoto(hold_rm, 0, 1, NULL, NULL);
2353
2354         /* For internet mail, generate delivery instructions.
2355          * Yes, this is recursive.  Deal with it.  Infinite recursion does
2356          * not happen because the delivery instructions message does not
2357          * contain a recipient.
2358          */
2359         if (recps != NULL)
2360          if (recps->num_internet > 0) {
2361                 lprintf(CTDL_DEBUG, "Generating delivery instructions\n");
2362                 instr = malloc(SIZ * 2);
2363                 snprintf(instr, SIZ * 2,
2364                         "Content-type: %s\n\nmsgid|%ld\nsubmitted|%ld\n"
2365                         "bounceto|%s@%s\n",
2366                         SPOOLMIME, newmsgid, (long)time(NULL),
2367                         msg->cm_fields['A'], msg->cm_fields['N']
2368                 );
2369
2370                 for (i=0; i<num_tokens(recps->recp_internet, '|'); ++i) {
2371                         size_t tmp = strlen(instr);
2372                         extract_token(recipient, recps->recp_internet, i, '|', sizeof recipient);
2373                         snprintf(&instr[tmp], SIZ * 2 - tmp,
2374                                  "remote|%s|0||\n", recipient);
2375                 }
2376
2377                 imsg = malloc(sizeof(struct CtdlMessage));
2378                 memset(imsg, 0, sizeof(struct CtdlMessage));
2379                 imsg->cm_magic = CTDLMESSAGE_MAGIC;
2380                 imsg->cm_anon_type = MES_NORMAL;
2381                 imsg->cm_format_type = FMT_RFC822;
2382                 imsg->cm_fields['A'] = strdup("Citadel");
2383                 imsg->cm_fields['M'] = instr;
2384                 CtdlSubmitMsg(imsg, NULL, SMTP_SPOOLOUT_ROOM);
2385                 CtdlFreeMessage(imsg);
2386         }
2387
2388         /*
2389          * Any addresses to harvest for someone's address book?
2390          * (Don't do this if this is not a message with recipients, otherwise we will
2391          * send this function into infinite recursion!!!!!)
2392          */
2393         if (recps != NULL) {
2394                 collected_addresses = harvest_collected_addresses(msg);
2395         }
2396
2397         if (collected_addresses != NULL) {
2398                 for (i=0; i<num_tokens(collected_addresses, ','); ++i) {
2399
2400                         /* Make a vCard out of each address */
2401                         extract_token(recipient, collected_addresses, i, ',', sizeof recipient);
2402                         striplt(recipient);
2403                         v = vcard_new_from_rfc822_addr(recipient);
2404                         if (v != NULL) {
2405                                 vmsg = malloc(sizeof(struct CtdlMessage));
2406                                 memset(vmsg, 0, sizeof(struct CtdlMessage));
2407                                 vmsg->cm_magic = CTDLMESSAGE_MAGIC;
2408                                 vmsg->cm_anon_type = MES_NORMAL;
2409                                 vmsg->cm_format_type = FMT_RFC822;
2410                                 vmsg->cm_fields['A'] = strdup("Citadel");
2411                                 vmsg->cm_fields['E'] = strdup(recipient);       /* this handles dups */
2412                                 ser = vcard_serialize(v);
2413                                 if (ser != NULL) {
2414                                         vmsg->cm_fields['M'] = malloc(strlen(ser) + 1024);
2415                                         sprintf(vmsg->cm_fields['M'],
2416                                                 "Content-type: text/x-vcard"
2417                                                 "\r\n\r\n%s\r\n", ser);
2418                                         free(ser);
2419                                 }
2420                                 vcard_free(v);
2421
2422                                 if (recps->num_local > 0) {
2423                                         for (j=0; j<num_tokens(recps->recp_local, '|'); ++j) {
2424                                                 extract_token(recipient, recps->recp_local, j,
2425                                                         '|', sizeof recipient);
2426                                                 lprintf(CTDL_DEBUG, "Adding contact for <%s>\n", recipient);
2427                                                 if (getuser(&userbuf, recipient) == 0) {
2428                                                         MailboxName(actual_rm, sizeof actual_rm,
2429                                                                 &userbuf, USERCONTACTSROOM);
2430
2431                                                         if (vmsgnum < 0L) {
2432                                                                 vmsgnum = CtdlSubmitMsg(vmsg,
2433                                                                                         NULL, actual_rm);
2434                                                         }
2435                                                         else {
2436                                                                 CtdlSaveMsgPointerInRoom(actual_rm,
2437                                                                                                 vmsgnum, 0);
2438                                                         }
2439
2440                                                 }
2441                                         }
2442                                 }
2443                                 CtdlFreeMessage(vmsg);
2444                         }
2445                 }
2446                 free(collected_addresses);
2447         }
2448         return(newmsgid);
2449 }
2450
2451
2452
2453
2454
2455
2456
2457
2458 /*
2459  * Convenience function for generating small administrative messages.
2460  */
2461 void quickie_message(char *from, char *to, char *room, char *text,
2462                         int format_type, char *subject)
2463 {
2464         struct CtdlMessage *msg;
2465         struct recptypes *recp = NULL;
2466
2467         msg = malloc(sizeof(struct CtdlMessage));
2468         memset(msg, 0, sizeof(struct CtdlMessage));
2469         msg->cm_magic = CTDLMESSAGE_MAGIC;
2470         msg->cm_anon_type = MES_NORMAL;
2471         msg->cm_format_type = format_type;
2472         msg->cm_fields['A'] = strdup(from);
2473         if (room != NULL) msg->cm_fields['O'] = strdup(room);
2474         msg->cm_fields['N'] = strdup(NODENAME);
2475         if (to != NULL) {
2476                 msg->cm_fields['R'] = strdup(to);
2477                 recp = validate_recipients(to);
2478         }
2479         if (subject != NULL) {
2480                 msg->cm_fields['U'] = strdup(subject);
2481         }
2482         msg->cm_fields['M'] = strdup(text);
2483
2484         CtdlSubmitMsg(msg, recp, room);
2485         CtdlFreeMessage(msg);
2486         if (recp != NULL) free(recp);
2487 }
2488
2489
2490
2491 /*
2492  * Back end function used by CtdlMakeMessage() and similar functions
2493  */
2494 char *CtdlReadMessageBody(char *terminator,     /* token signalling EOT */
2495                         size_t maxlen,          /* maximum message length */
2496                         char *exist,            /* if non-null, append to it;
2497                                                    exist is ALWAYS freed  */
2498                         int crlf                /* CRLF newlines instead of LF */
2499                         ) {
2500         char buf[1024];
2501         int linelen;
2502         size_t message_len = 0;
2503         size_t buffer_len = 0;
2504         char *ptr;
2505         char *m;
2506         int flushing = 0;
2507         int finished = 0;
2508
2509         if (exist == NULL) {
2510                 m = malloc(4096);
2511                 m[0] = 0;
2512                 buffer_len = 4096;
2513                 message_len = 0;
2514         }
2515         else {
2516                 message_len = strlen(exist);
2517                 buffer_len = message_len + 4096;
2518                 m = realloc(exist, buffer_len);
2519                 if (m == NULL) {
2520                         free(exist);
2521                         return m;
2522                 }
2523         }
2524
2525         /* flush the input if we have nowhere to store it */
2526         if (m == NULL) {
2527                 flushing = 1;
2528         }
2529
2530         /* read in the lines of message text one by one */
2531         do {
2532                 if (client_getln(buf, (sizeof buf - 3)) < 1) finished = 1;
2533                 if (!strcmp(buf, terminator)) finished = 1;
2534                 if (crlf) {
2535                         strcat(buf, "\r\n");
2536                 }
2537                 else {
2538                         strcat(buf, "\n");
2539                 }
2540
2541                 if ( (!flushing) && (!finished) ) {
2542                         /* Measure the line */
2543                         linelen = strlen(buf);
2544
2545                         /* augment the buffer if we have to */
2546                         if ((message_len + linelen) >= buffer_len) {
2547                                 ptr = realloc(m, (buffer_len * 2) );
2548                                 if (ptr == NULL) {      /* flush if can't allocate */
2549                                         flushing = 1;
2550                                 } else {
2551                                         buffer_len = (buffer_len * 2);
2552                                         m = ptr;
2553                                         lprintf(CTDL_DEBUG, "buffer_len is now %ld\n", (long)buffer_len);
2554                                 }
2555                         }
2556
2557                         /* Add the new line to the buffer.  NOTE: this loop must avoid
2558                         * using functions like strcat() and strlen() because they
2559                         * traverse the entire buffer upon every call, and doing that
2560                         * for a multi-megabyte message slows it down beyond usability.
2561                         */
2562                         strcpy(&m[message_len], buf);
2563                         message_len += linelen;
2564                 }
2565
2566                 /* if we've hit the max msg length, flush the rest */
2567                 if (message_len >= maxlen) flushing = 1;
2568
2569         } while (!finished);
2570         return(m);
2571 }
2572
2573
2574
2575
2576 /*
2577  * Build a binary message to be saved on disk.
2578  * (NOTE: if you supply 'preformatted_text', the buffer you give it
2579  * will become part of the message.  This means you are no longer
2580  * responsible for managing that memory -- it will be freed along with
2581  * the rest of the fields when CtdlFreeMessage() is called.)
2582  */
2583
2584 struct CtdlMessage *CtdlMakeMessage(
2585         struct ctdluser *author,        /* author's user structure */
2586         char *recipient,                /* NULL if it's not mail */
2587         char *recp_cc,                  /* NULL if it's not mail */
2588         char *room,                     /* room where it's going */
2589         int type,                       /* see MES_ types in header file */
2590         int format_type,                /* variformat, plain text, MIME... */
2591         char *fake_name,                /* who we're masquerading as */
2592         char *subject,                  /* Subject (optional) */
2593         char *preformatted_text         /* ...or NULL to read text from client */
2594 ) {
2595         char dest_node[SIZ];
2596         char buf[SIZ];
2597         struct CtdlMessage *msg;
2598
2599         msg = malloc(sizeof(struct CtdlMessage));
2600         memset(msg, 0, sizeof(struct CtdlMessage));
2601         msg->cm_magic = CTDLMESSAGE_MAGIC;
2602         msg->cm_anon_type = type;
2603         msg->cm_format_type = format_type;
2604
2605         /* Don't confuse the poor folks if it's not routed mail. */
2606         strcpy(dest_node, "");
2607
2608         striplt(recipient);
2609         striplt(recp_cc);
2610
2611         snprintf(buf, sizeof buf, "cit%ld", author->usernum);   /* Path */
2612         msg->cm_fields['P'] = strdup(buf);
2613
2614         snprintf(buf, sizeof buf, "%ld", (long)time(NULL));     /* timestamp */
2615         msg->cm_fields['T'] = strdup(buf);
2616
2617         if (fake_name[0])                                       /* author */
2618                 msg->cm_fields['A'] = strdup(fake_name);
2619         else
2620                 msg->cm_fields['A'] = strdup(author->fullname);
2621
2622         if (CC->room.QRflags & QR_MAILBOX) {            /* room */
2623                 msg->cm_fields['O'] = strdup(&CC->room.QRname[11]);
2624         }
2625         else {
2626                 msg->cm_fields['O'] = strdup(CC->room.QRname);
2627         }
2628
2629         msg->cm_fields['N'] = strdup(NODENAME);         /* nodename */
2630         msg->cm_fields['H'] = strdup(HUMANNODE);                /* hnodename */
2631
2632         if (recipient[0] != 0) {
2633                 msg->cm_fields['R'] = strdup(recipient);
2634         }
2635         if (recp_cc[0] != 0) {
2636                 msg->cm_fields['Y'] = strdup(recp_cc);
2637         }
2638         if (dest_node[0] != 0) {
2639                 msg->cm_fields['D'] = strdup(dest_node);
2640         }
2641
2642         if ( (author == &CC->user) && (strlen(CC->cs_inet_email) > 0) ) {
2643                 msg->cm_fields['F'] = strdup(CC->cs_inet_email);
2644         }
2645
2646         if (subject != NULL) {
2647                 striplt(subject);
2648                 if (strlen(subject) > 0) {
2649                         msg->cm_fields['U'] = strdup(subject);
2650                 }
2651         }
2652
2653         if (preformatted_text != NULL) {
2654                 msg->cm_fields['M'] = preformatted_text;
2655         }
2656         else {
2657                 msg->cm_fields['M'] = CtdlReadMessageBody("000",
2658                                         config.c_maxmsglen, NULL, 0);
2659         }
2660
2661         return(msg);
2662 }
2663
2664
2665 /*
2666  * Check to see whether we have permission to post a message in the current
2667  * room.  Returns a *CITADEL ERROR CODE* and puts a message in errmsgbuf, or
2668  * returns 0 on success.
2669  */
2670 int CtdlDoIHavePermissionToPostInThisRoom(char *errmsgbuf, size_t n) {
2671
2672         if (!(CC->logged_in)) {
2673                 snprintf(errmsgbuf, n, "Not logged in.");
2674                 return (ERROR + NOT_LOGGED_IN);
2675         }
2676
2677         if ((CC->user.axlevel < 2)
2678             && ((CC->room.QRflags & QR_MAILBOX) == 0)) {
2679                 snprintf(errmsgbuf, n, "Need to be validated to enter "
2680                                 "(except in %s> to sysop)", MAILROOM);
2681                 return (ERROR + HIGHER_ACCESS_REQUIRED);
2682         }
2683
2684         if ((CC->user.axlevel < 4)
2685            && (CC->room.QRflags & QR_NETWORK)) {
2686                 snprintf(errmsgbuf, n, "Need net privileges to enter here.");
2687                 return (ERROR + HIGHER_ACCESS_REQUIRED);
2688         }
2689
2690         if ((CC->user.axlevel < 6)
2691            && (CC->room.QRflags & QR_READONLY)) {
2692                 snprintf(errmsgbuf, n, "Sorry, this is a read-only room.");
2693                 return (ERROR + HIGHER_ACCESS_REQUIRED);
2694         }
2695
2696         strcpy(errmsgbuf, "Ok");
2697         return(0);
2698 }
2699
2700
2701 /*
2702  * Check to see if the specified user has Internet mail permission
2703  * (returns nonzero if permission is granted)
2704  */
2705 int CtdlCheckInternetMailPermission(struct ctdluser *who) {
2706
2707         /* Do not allow twits to send Internet mail */
2708         if (who->axlevel <= 2) return(0);
2709
2710         /* Globally enabled? */
2711         if (config.c_restrict == 0) return(1);
2712
2713         /* User flagged ok? */
2714         if (who->flags & US_INTERNET) return(2);
2715
2716         /* Aide level access? */
2717         if (who->axlevel >= 6) return(3);
2718
2719         /* No mail for you! */
2720         return(0);
2721 }
2722
2723
2724 /*
2725  * Validate recipients, count delivery types and errors, and handle aliasing
2726  * FIXME check for dupes!!!!!
2727  * Returns 0 if all addresses are ok, -1 if no addresses were specified,
2728  * or the number of addresses found invalid.
2729  */
2730 struct recptypes *validate_recipients(char *recipients) {
2731         struct recptypes *ret;
2732         char this_recp[SIZ];
2733         char this_recp_cooked[SIZ];
2734         char append[SIZ];
2735         int num_recps;
2736         int i, j;
2737         int mailtype;
2738         int invalid;
2739         struct ctdluser tempUS;
2740         struct ctdlroom tempQR;
2741
2742         /* Initialize */
2743         ret = (struct recptypes *) malloc(sizeof(struct recptypes));
2744         if (ret == NULL) return(NULL);
2745         memset(ret, 0, sizeof(struct recptypes));
2746
2747         ret->num_local = 0;
2748         ret->num_internet = 0;
2749         ret->num_ignet = 0;
2750         ret->num_error = 0;
2751         ret->num_room = 0;
2752
2753         if (recipients == NULL) {
2754                 num_recps = 0;
2755         }
2756         else if (strlen(recipients) == 0) {
2757                 num_recps = 0;
2758         }
2759         else {
2760                 /* Change all valid separator characters to commas */
2761                 for (i=0; i<strlen(recipients); ++i) {
2762                         if ((recipients[i] == ';') || (recipients[i] == '|')) {
2763                                 recipients[i] = ',';
2764                         }
2765                 }
2766
2767                 /* Count 'em up */
2768                 num_recps = num_tokens(recipients, ',');
2769         }
2770
2771         if (num_recps > 0) for (i=0; i<num_recps; ++i) {
2772                 extract_token(this_recp, recipients, i, ',', sizeof this_recp);
2773                 striplt(this_recp);
2774                 lprintf(CTDL_DEBUG, "Evaluating recipient #%d <%s>\n", i, this_recp);
2775                 mailtype = alias(this_recp);
2776                 mailtype = alias(this_recp);
2777                 mailtype = alias(this_recp);
2778                 for (j=0; j<=strlen(this_recp); ++j) {
2779                         if (this_recp[j]=='_') {
2780                                 this_recp_cooked[j] = ' ';
2781                         }
2782                         else {
2783                                 this_recp_cooked[j] = this_recp[j];
2784                         }
2785                 }
2786                 invalid = 0;
2787                 switch(mailtype) {
2788                         case MES_LOCAL:
2789                                 if (!strcasecmp(this_recp, "sysop")) {
2790                                         ++ret->num_room;
2791                                         strcpy(this_recp, config.c_aideroom);
2792                                         if (strlen(ret->recp_room) > 0) {
2793                                                 strcat(ret->recp_room, "|");
2794                                         }
2795                                         strcat(ret->recp_room, this_recp);
2796                                 }
2797                                 else if (getuser(&tempUS, this_recp) == 0) {
2798                                         ++ret->num_local;
2799                                         strcpy(this_recp, tempUS.fullname);
2800                                         if (strlen(ret->recp_local) > 0) {
2801                                                 strcat(ret->recp_local, "|");
2802                                         }
2803                                         strcat(ret->recp_local, this_recp);
2804                                 }
2805                                 else if (getuser(&tempUS, this_recp_cooked) == 0) {
2806                                         ++ret->num_local;
2807                                         strcpy(this_recp, tempUS.fullname);
2808                                         if (strlen(ret->recp_local) > 0) {
2809                                                 strcat(ret->recp_local, "|");
2810                                         }
2811                                         strcat(ret->recp_local, this_recp);
2812                                 }
2813                                 else if ( (!strncasecmp(this_recp, "room_", 5))
2814                                       && (!getroom(&tempQR, &this_recp_cooked[5])) ) {
2815                                         ++ret->num_room;
2816                                         if (strlen(ret->recp_room) > 0) {
2817                                                 strcat(ret->recp_room, "|");
2818                                         }
2819                                         strcat(ret->recp_room, &this_recp_cooked[5]);
2820                                 }
2821                                 else {
2822                                         ++ret->num_error;
2823                                         invalid = 1;
2824                                 }
2825                                 break;
2826                         case MES_INTERNET:
2827                                 /* Yes, you're reading this correctly: if the target
2828                                  * domain points back to the local system or an attached
2829                                  * Citadel directory, the address is invalid.  That's
2830                                  * because if the address were valid, we would have
2831                                  * already translated it to a local address by now.
2832                                  */
2833                                 if (IsDirectory(this_recp)) {
2834                                         ++ret->num_error;
2835                                         invalid = 1;
2836                                 }
2837                                 else {
2838                                         ++ret->num_internet;
2839                                         if (strlen(ret->recp_internet) > 0) {
2840                                                 strcat(ret->recp_internet, "|");
2841                                         }
2842                                         strcat(ret->recp_internet, this_recp);
2843                                 }
2844                                 break;
2845                         case MES_IGNET:
2846                                 ++ret->num_ignet;
2847                                 if (strlen(ret->recp_ignet) > 0) {
2848                                         strcat(ret->recp_ignet, "|");
2849                                 }
2850                                 strcat(ret->recp_ignet, this_recp);
2851                                 break;
2852                         case MES_ERROR:
2853                                 ++ret->num_error;
2854                                 invalid = 1;
2855                                 break;
2856                 }
2857                 if (invalid) {
2858                         if (strlen(ret->errormsg) == 0) {
2859                                 snprintf(append, sizeof append,
2860                                          "Invalid recipient: %s",
2861                                          this_recp);
2862                         }
2863                         else {
2864                                 snprintf(append, sizeof append,
2865                                          ", %s", this_recp);
2866                         }
2867                         if ( (strlen(ret->errormsg) + strlen(append)) < SIZ) {
2868                                 strcat(ret->errormsg, append);
2869                         }
2870                 }
2871                 else {
2872                         if (strlen(ret->display_recp) == 0) {
2873                                 strcpy(append, this_recp);
2874                         }
2875                         else {
2876                                 snprintf(append, sizeof append, ", %s",
2877                                          this_recp);
2878                         }
2879                         if ( (strlen(ret->display_recp)+strlen(append)) < SIZ) {
2880                                 strcat(ret->display_recp, append);
2881                         }
2882                 }
2883         }
2884
2885         if ((ret->num_local + ret->num_internet + ret->num_ignet +
2886            ret->num_room + ret->num_error) == 0) {
2887                 ret->num_error = (-1);
2888                 strcpy(ret->errormsg, "No recipients specified.");
2889         }
2890
2891         lprintf(CTDL_DEBUG, "validate_recipients()\n");
2892         lprintf(CTDL_DEBUG, " local: %d <%s>\n", ret->num_local, ret->recp_local);
2893         lprintf(CTDL_DEBUG, "  room: %d <%s>\n", ret->num_room, ret->recp_room);
2894         lprintf(CTDL_DEBUG, "  inet: %d <%s>\n", ret->num_internet, ret->recp_internet);
2895         lprintf(CTDL_DEBUG, " ignet: %d <%s>\n", ret->num_ignet, ret->recp_ignet);
2896         lprintf(CTDL_DEBUG, " error: %d <%s>\n", ret->num_error, ret->errormsg);
2897
2898         return(ret);
2899 }
2900
2901
2902
2903 /*
2904  * message entry  -  mode 0 (normal)
2905  */
2906 void cmd_ent0(char *entargs)
2907 {
2908         int post = 0;
2909         char recp[SIZ];
2910         char cc[SIZ];
2911         char bcc[SIZ];
2912         char masquerade_as[SIZ];
2913         int anon_flag = 0;
2914         int format_type = 0;
2915         char newusername[SIZ];
2916         struct CtdlMessage *msg;
2917         int anonymous = 0;
2918         char errmsg[SIZ];
2919         int err = 0;
2920         struct recptypes *valid = NULL;
2921         struct recptypes *valid_to = NULL;
2922         struct recptypes *valid_cc = NULL;
2923         struct recptypes *valid_bcc = NULL;
2924         char subject[SIZ];
2925         int do_confirm = 0;
2926         long msgnum;
2927
2928         unbuffer_output();
2929
2930         post = extract_int(entargs, 0);
2931         extract_token(recp, entargs, 1, '|', sizeof recp);
2932         anon_flag = extract_int(entargs, 2);
2933         format_type = extract_int(entargs, 3);
2934         extract_token(subject, entargs, 4, '|', sizeof subject);
2935         do_confirm = extract_int(entargs, 6);
2936         extract_token(cc, entargs, 7, '|', sizeof cc);
2937         extract_token(bcc, entargs, 8, '|', sizeof bcc);
2938
2939         /* first check to make sure the request is valid. */
2940
2941         err = CtdlDoIHavePermissionToPostInThisRoom(errmsg, sizeof errmsg);
2942         if (err) {
2943                 cprintf("%d %s\n", err, errmsg);
2944                 return;
2945         }
2946
2947         /* Check some other permission type things. */
2948
2949         if (post == 2) {
2950                 if (CC->user.axlevel < 6) {
2951                         cprintf("%d You don't have permission to masquerade.\n",
2952                                 ERROR + HIGHER_ACCESS_REQUIRED);
2953                         return;
2954                 }
2955                 extract_token(newusername, entargs, 5, '|', sizeof newusername);
2956                 memset(CC->fake_postname, 0, sizeof(CC->fake_postname) );
2957                 safestrncpy(CC->fake_postname, newusername,
2958                         sizeof(CC->fake_postname) );
2959                 cprintf("%d ok\n", CIT_OK);
2960                 return;
2961         }
2962         CC->cs_flags |= CS_POSTING;
2963
2964         /* In the Mail> room we have to behave a little differently --
2965          * make sure the user has specified at least one recipient.  Then
2966          * validate the recipient(s).
2967          */
2968         if ( (CC->room.QRflags & QR_MAILBOX)
2969            && (!strcasecmp(&CC->room.QRname[11], MAILROOM)) ) {
2970
2971                 if (CC->user.axlevel < 2) {
2972                         strcpy(recp, "sysop");
2973                         strcpy(cc, "");
2974                         strcpy(bcc, "");
2975                 }
2976
2977                 valid_to = validate_recipients(recp);
2978                 if (valid_to->num_error > 0) {
2979                         cprintf("%d Invalid recipient (To)\n", ERROR + NO_SUCH_USER);
2980                         free(valid_to);
2981                         return;
2982                 }
2983
2984                 valid_cc = validate_recipients(cc);
2985                 if (valid_cc->num_error > 0) {
2986                         cprintf("%d Invalid recipient (CC)\n", ERROR + NO_SUCH_USER);
2987                         free(valid_to);
2988                         free(valid_cc);
2989                         return;
2990                 }
2991
2992                 valid_bcc = validate_recipients(bcc);
2993                 if (valid_bcc->num_error > 0) {
2994                         cprintf("%d Invalid recipient (BCC)\n", ERROR + NO_SUCH_USER);
2995                         free(valid_to);
2996                         free(valid_cc);
2997                         free(valid_bcc);
2998                         return;
2999                 }
3000
3001                 /* Recipient required, but none were specified */
3002                 if ( (valid_to->num_error < 0) && (valid_cc->num_error < 0) && (valid_bcc->num_error < 0) ) {
3003                         free(valid_to);
3004                         free(valid_cc);
3005                         free(valid_bcc);
3006                         cprintf("%d At least one recipient is required.\n", ERROR + NO_SUCH_USER);
3007                         return;
3008                 }
3009
3010                 if (valid_to->num_internet + valid_cc->num_internet + valid_bcc->num_internet > 0) {
3011                         if (CtdlCheckInternetMailPermission(&CC->user)==0) {
3012                                 cprintf("%d You do not have permission "
3013                                         "to send Internet mail.\n",
3014                                         ERROR + HIGHER_ACCESS_REQUIRED);
3015                                 free(valid_to);
3016                                 free(valid_cc);
3017                                 free(valid_bcc);
3018                                 return;
3019                         }
3020                 }
3021
3022                 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)
3023                    && (CC->user.axlevel < 4) ) {
3024                         cprintf("%d Higher access required for network mail.\n",
3025                                 ERROR + HIGHER_ACCESS_REQUIRED);
3026                         free(valid_to);
3027                         free(valid_cc);
3028                         free(valid_bcc);
3029                         return;
3030                 }
3031
3032                 if ((RESTRICT_INTERNET == 1)
3033                     && (valid_to->num_internet + valid_cc->num_internet + valid_bcc->num_internet > 0)
3034                     && ((CC->user.flags & US_INTERNET) == 0)
3035                     && (!CC->internal_pgm)) {
3036                         cprintf("%d You don't have access to Internet mail.\n",
3037                                 ERROR + HIGHER_ACCESS_REQUIRED);
3038                         free(valid_to);
3039                         free(valid_cc);
3040                         free(valid_bcc);
3041                         return;
3042                 }
3043
3044         }
3045
3046         /* Is this a room which has anonymous-only or anonymous-option? */
3047         anonymous = MES_NORMAL;
3048         if (CC->room.QRflags & QR_ANONONLY) {
3049                 anonymous = MES_ANONONLY;
3050         }
3051         if (CC->room.QRflags & QR_ANONOPT) {
3052                 if (anon_flag == 1) {   /* only if the user requested it */
3053                         anonymous = MES_ANONOPT;
3054                 }
3055         }
3056
3057         if ((CC->room.QRflags & QR_MAILBOX) == 0) {
3058                 recp[0] = 0;
3059         }
3060
3061         /* If we're only checking the validity of the request, return
3062          * success without creating the message.
3063          */
3064         if (post == 0) {
3065                 cprintf("%d %s\n", CIT_OK,
3066                         ((valid_to != NULL) ? valid_to->display_recp : "") );
3067                 free(valid_to);
3068                 free(valid_cc);
3069                 free(valid_bcc);
3070                 return;
3071         }
3072
3073         /* We don't need these anymore because we'll do it differently below */
3074         free(valid_to);
3075         free(valid_cc);
3076         free(valid_bcc);
3077
3078         /* Handle author masquerading */
3079         if (CC->fake_postname[0]) {
3080                 strcpy(masquerade_as, CC->fake_postname);
3081         }
3082         else if (CC->fake_username[0]) {
3083                 strcpy(masquerade_as, CC->fake_username);
3084         }
3085         else {
3086                 strcpy(masquerade_as, "");
3087         }
3088
3089         /* Read in the message from the client. */
3090         if (do_confirm) {
3091                 cprintf("%d send message\n", START_CHAT_MODE);
3092         } else {
3093                 cprintf("%d send message\n", SEND_LISTING);
3094         }
3095
3096         msg = CtdlMakeMessage(&CC->user, recp, cc,
3097                 CC->room.QRname, anonymous, format_type,
3098                 masquerade_as, subject, NULL);
3099
3100         /* Put together one big recipients struct containing to/cc/bcc all in
3101          * one.  This is for the envelope.
3102          */
3103         char *all_recps = malloc(SIZ * 3);
3104         strcpy(all_recps, recp);
3105         if (strlen(cc) > 0) {
3106                 if (strlen(all_recps) > 0) {
3107                         strcat(all_recps, ",");
3108                 }
3109                 strcat(all_recps, cc);
3110         }
3111         if (strlen(bcc) > 0) {
3112                 if (strlen(all_recps) > 0) {
3113                         strcat(all_recps, ",");
3114                 }
3115                 strcat(all_recps, bcc);
3116         }
3117         if (strlen(all_recps) > 0) {
3118                 valid = validate_recipients(all_recps);
3119         }
3120         else {
3121                 valid = NULL;
3122         }
3123         free(all_recps);
3124
3125         if (msg != NULL) {
3126                 msgnum = CtdlSubmitMsg(msg, valid, "");
3127
3128                 if (do_confirm) {
3129                         cprintf("%ld\n", msgnum);
3130                         if (msgnum >= 0L) {
3131                                 cprintf("Message accepted.\n");
3132                         }
3133                         else {
3134                                 cprintf("Internal error.\n");
3135                         }
3136                         if (msg->cm_fields['E'] != NULL) {
3137                                 cprintf("%s\n", msg->cm_fields['E']);
3138                         } else {
3139                                 cprintf("\n");
3140                         }
3141                         cprintf("000\n");
3142                 }
3143
3144                 CtdlFreeMessage(msg);
3145         }
3146         CC->fake_postname[0] = '\0';
3147         if (valid != NULL) {
3148                 free(valid);
3149         }
3150         return;
3151 }
3152
3153
3154
3155 /*
3156  * API function to delete messages which match a set of criteria
3157  * (returns the actual number of messages deleted)
3158  */
3159 int CtdlDeleteMessages(char *room_name,         /* which room */
3160                         long dmsgnum,           /* or "0" for any */
3161                         char *content_type,     /* or "" for any */
3162                         int deferred            /* let TDAP sweep it later */
3163 )
3164 {
3165
3166         struct ctdlroom qrbuf;
3167         struct cdbdata *cdbfr;
3168         long *msglist = NULL;
3169         long *dellist = NULL;
3170         int num_msgs = 0;
3171         int i;
3172         int num_deleted = 0;
3173         int delete_this;
3174         struct MetaData smi;
3175
3176         lprintf(CTDL_DEBUG, "CtdlDeleteMessages(%s, %ld, %s, %d)\n",
3177                 room_name, dmsgnum, content_type, deferred);
3178
3179         /* get room record, obtaining a lock... */
3180         if (lgetroom(&qrbuf, room_name) != 0) {
3181                 lprintf(CTDL_ERR, "CtdlDeleteMessages(): Room <%s> not found\n",
3182                         room_name);
3183                 return (0);     /* room not found */
3184         }
3185         cdbfr = cdb_fetch(CDB_MSGLISTS, &qrbuf.QRnumber, sizeof(long));
3186
3187         if (cdbfr != NULL) {
3188                 msglist = malloc(cdbfr->len);
3189                 dellist = malloc(cdbfr->len);
3190                 memcpy(msglist, cdbfr->ptr, cdbfr->len);
3191                 num_msgs = cdbfr->len / sizeof(long);
3192                 cdb_free(cdbfr);
3193         }
3194         if (num_msgs > 0) {
3195                 for (i = 0; i < num_msgs; ++i) {
3196                         delete_this = 0x00;
3197
3198                         /* Set/clear a bit for each criterion */
3199
3200                         if ((dmsgnum == 0L) || (msglist[i] == dmsgnum)) {
3201                                 delete_this |= 0x01;
3202                         }
3203                         if (strlen(content_type) == 0) {
3204                                 delete_this |= 0x02;
3205                         } else {
3206                                 GetMetaData(&smi, msglist[i]);
3207                                 if (!strcasecmp(smi.meta_content_type,
3208                                                 content_type)) {
3209                                         delete_this |= 0x02;
3210                                 }
3211                         }
3212
3213                         /* Delete message only if all bits are set */
3214                         if (delete_this == 0x03) {
3215                                 dellist[num_deleted++] = msglist[i];
3216                                 msglist[i] = 0L;
3217                         }
3218                 }
3219
3220                 num_msgs = sort_msglist(msglist, num_msgs);
3221                 cdb_store(CDB_MSGLISTS, &qrbuf.QRnumber, (int)sizeof(long),
3222                           msglist, (int)(num_msgs * sizeof(long)));
3223
3224                 qrbuf.QRhighest = msglist[num_msgs - 1];
3225         }
3226         lputroom(&qrbuf);
3227
3228         /*
3229          * If the delete operation is "deferred" (and technically, any delete
3230          * operation not performed by THE DREADED AUTO-PURGER ought to be
3231          * a deferred delete) then we save a pointer to the message in the
3232          * DELETED_MSGS_ROOM.  This will cause the reference count to remain
3233          * at least 1, which will save the user from having to synchronously
3234          * wait for various disk-intensive operations to complete.
3235          */
3236         if ( (deferred) && (num_deleted) ) {
3237                 for (i=0; i<num_deleted; ++i) {
3238                         CtdlCopyMsgToRoom(dellist[i], DELETED_MSGS_ROOM);
3239                 }
3240         }
3241
3242         /* Go through the messages we pulled out of the index, and decrement
3243          * their reference counts by 1.  If this is the only room the message
3244          * was in, the reference count will reach zero and the message will
3245          * automatically be deleted from the database.  We do this in a
3246          * separate pass because there might be plug-in hooks getting called,
3247          * and we don't want that happening during an S_ROOMS critical
3248          * section.
3249          */
3250         if (num_deleted) for (i=0; i<num_deleted; ++i) {
3251                 PerformDeleteHooks(qrbuf.QRname, dellist[i]);
3252                 AdjRefCount(dellist[i], -1);
3253         }
3254
3255         /* Now free the memory we used, and go away. */
3256         if (msglist != NULL) free(msglist);
3257         if (dellist != NULL) free(dellist);
3258         lprintf(CTDL_DEBUG, "%d message(s) deleted.\n", num_deleted);
3259         return (num_deleted);
3260 }
3261
3262
3263
3264 /*
3265  * Check whether the current user has permission to delete messages from
3266  * the current room (returns 1 for yes, 0 for no)
3267  */
3268 int CtdlDoIHavePermissionToDeleteMessagesFromThisRoom(void) {
3269         getuser(&CC->user, CC->curr_user);
3270         if ((CC->user.axlevel < 6)
3271             && (CC->user.usernum != CC->room.QRroomaide)
3272             && ((CC->room.QRflags & QR_MAILBOX) == 0)
3273             && (!(CC->internal_pgm))) {
3274                 return(0);
3275         }
3276         return(1);
3277 }
3278
3279
3280
3281 /*
3282  * Delete message from current room
3283  */
3284 void cmd_dele(char *delstr)
3285 {
3286         long delnum;
3287         int num_deleted;
3288
3289         if (CtdlDoIHavePermissionToDeleteMessagesFromThisRoom() == 0) {
3290                 cprintf("%d Higher access required.\n",
3291                         ERROR + HIGHER_ACCESS_REQUIRED);
3292                 return;
3293         }
3294         delnum = extract_long(delstr, 0);
3295
3296         num_deleted = CtdlDeleteMessages(CC->room.QRname, delnum, "", 1);
3297
3298         if (num_deleted) {
3299                 cprintf("%d %d message%s deleted.\n", CIT_OK,
3300                         num_deleted, ((num_deleted != 1) ? "s" : ""));
3301         } else {
3302                 cprintf("%d Message %ld not found.\n", ERROR + MESSAGE_NOT_FOUND, delnum);
3303         }
3304 }
3305
3306
3307 /*
3308  * Back end API function for moves and deletes
3309  */
3310 int CtdlCopyMsgToRoom(long msgnum, char *dest) {
3311         int err;
3312
3313         err = CtdlSaveMsgPointerInRoom(dest, msgnum,
3314                 (SM_VERIFY_GOODNESS | SM_DO_REPL_CHECK) );
3315         if (err != 0) return(err);
3316
3317         return(0);
3318 }
3319
3320
3321
3322 /*
3323  * move or copy a message to another room
3324  */
3325 void cmd_move(char *args)
3326 {
3327         long num;
3328         char targ[ROOMNAMELEN];
3329         struct ctdlroom qtemp;
3330         int err;
3331         int is_copy = 0;
3332         int ra;
3333         int permit = 0;
3334
3335         num = extract_long(args, 0);
3336         extract_token(targ, args, 1, '|', sizeof targ);
3337         targ[ROOMNAMELEN - 1] = 0;
3338         is_copy = extract_int(args, 2);
3339
3340         if (getroom(&qtemp, targ) != 0) {
3341                 cprintf("%d '%s' does not exist.\n",
3342                         ERROR + ROOM_NOT_FOUND, targ);
3343                 return;
3344         }
3345
3346         getuser(&CC->user, CC->curr_user);
3347         CtdlRoomAccess(&qtemp, &CC->user, &ra, NULL);
3348
3349         /* Check for permission to perform this operation.
3350          * Remember: "CC->room" is source, "qtemp" is target.
3351          */
3352         permit = 0;
3353
3354         /* Aides can move/copy */
3355         if (CC->user.axlevel >= 6) permit = 1;
3356
3357         /* Room aides can move/copy */
3358         if (CC->user.usernum == CC->room.QRroomaide) permit = 1;
3359
3360         /* Permit move/copy from personal rooms */
3361         if ((CC->room.QRflags & QR_MAILBOX)
3362            && (qtemp.QRflags & QR_MAILBOX)) permit = 1;
3363
3364         /* Permit only copy from public to personal room */
3365         if ( (is_copy)
3366            && (!(CC->room.QRflags & QR_MAILBOX))
3367            && (qtemp.QRflags & QR_MAILBOX)) permit = 1;
3368
3369         /* User must have access to target room */
3370         if (!(ra & UA_KNOWN))  permit = 0;
3371
3372         if (!permit) {
3373                 cprintf("%d Higher access required.\n",
3374                         ERROR + HIGHER_ACCESS_REQUIRED);
3375                 return;
3376         }
3377
3378         err = CtdlCopyMsgToRoom(num, targ);
3379         if (err != 0) {
3380                 cprintf("%d Cannot store message in %s: error %d\n",
3381                         err, targ, err);
3382                 return;
3383         }
3384
3385         /* Now delete the message from the source room,
3386          * if this is a 'move' rather than a 'copy' operation.
3387          */
3388         if (is_copy == 0) {
3389                 CtdlDeleteMessages(CC->room.QRname, num, "", 0);
3390         }
3391
3392         cprintf("%d Message %s.\n", CIT_OK, (is_copy ? "copied" : "moved") );
3393 }
3394
3395
3396
3397 /*
3398  * GetMetaData()  -  Get the supplementary record for a message
3399  */
3400 void GetMetaData(struct MetaData *smibuf, long msgnum)
3401 {
3402
3403         struct cdbdata *cdbsmi;
3404         long TheIndex;
3405
3406         memset(smibuf, 0, sizeof(struct MetaData));
3407         smibuf->meta_msgnum = msgnum;
3408         smibuf->meta_refcount = 1;      /* Default reference count is 1 */
3409
3410         /* Use the negative of the message number for its supp record index */
3411         TheIndex = (0L - msgnum);
3412
3413         cdbsmi = cdb_fetch(CDB_MSGMAIN, &TheIndex, sizeof(long));
3414         if (cdbsmi == NULL) {
3415                 return;         /* record not found; go with defaults */
3416         }
3417         memcpy(smibuf, cdbsmi->ptr,
3418                ((cdbsmi->len > sizeof(struct MetaData)) ?
3419                 sizeof(struct MetaData) : cdbsmi->len));
3420         cdb_free(cdbsmi);
3421         return;
3422 }
3423
3424
3425 /*
3426  * PutMetaData()  -  (re)write supplementary record for a message
3427  */
3428 void PutMetaData(struct MetaData *smibuf)
3429 {
3430         long TheIndex;
3431
3432         /* Use the negative of the message number for the metadata db index */
3433         TheIndex = (0L - smibuf->meta_msgnum);
3434
3435         lprintf(CTDL_DEBUG, "PutMetaData(%ld) - ref count is %d\n",
3436                 smibuf->meta_msgnum, smibuf->meta_refcount);
3437
3438         cdb_store(CDB_MSGMAIN,
3439                   &TheIndex, (int)sizeof(long),
3440                   smibuf, (int)sizeof(struct MetaData));
3441
3442 }
3443
3444 /*
3445  * AdjRefCount  -  change the reference count for a message;
3446  *               delete the message if it reaches zero
3447  */
3448 void AdjRefCount(long msgnum, int incr)
3449 {
3450
3451         struct MetaData smi;
3452         long delnum;
3453
3454         /* This is a *tight* critical section; please keep it that way, as
3455          * it may get called while nested in other critical sections.
3456          * Complicating this any further will surely cause deadlock!
3457          */
3458         begin_critical_section(S_SUPPMSGMAIN);
3459         GetMetaData(&smi, msgnum);
3460         smi.meta_refcount += incr;
3461         PutMetaData(&smi);
3462         end_critical_section(S_SUPPMSGMAIN);
3463         lprintf(CTDL_DEBUG, "msg %ld ref count incr %d, is now %d\n",
3464                 msgnum, incr, smi.meta_refcount);
3465
3466         /* If the reference count is now zero, delete the message
3467          * (and its supplementary record as well).
3468          */
3469         if (smi.meta_refcount == 0) {
3470                 lprintf(CTDL_DEBUG, "Deleting message <%ld>\n", msgnum);
3471
3472                 /* Remove from fulltext index */
3473                 if (config.c_enable_fulltext) {
3474                         ft_index_message(msgnum, 0);
3475                 }
3476
3477                 /* Remove from message base */
3478                 delnum = msgnum;
3479                 cdb_delete(CDB_MSGMAIN, &delnum, (int)sizeof(long));
3480                 cdb_delete(CDB_BIGMSGS, &delnum, (int)sizeof(long));
3481
3482                 /* Remove metadata record */
3483                 delnum = (0L - msgnum);
3484                 cdb_delete(CDB_MSGMAIN, &delnum, (int)sizeof(long));
3485         }
3486 }
3487
3488 /*
3489  * Write a generic object to this room
3490  *
3491  * Note: this could be much more efficient.  Right now we use two temporary
3492  * files, and still pull the message into memory as with all others.
3493  */
3494 void CtdlWriteObject(char *req_room,            /* Room to stuff it in */
3495                         char *content_type,     /* MIME type of this object */
3496                         char *tempfilename,     /* Where to fetch it from */
3497                         struct ctdluser *is_mailbox,    /* Mailbox room? */
3498                         int is_binary,          /* Is encoding necessary? */
3499                         int is_unique,          /* Del others of this type? */
3500                         unsigned int flags      /* Internal save flags */
3501                         )
3502 {
3503
3504         FILE *fp;
3505         struct ctdlroom qrbuf;
3506         char roomname[ROOMNAMELEN];
3507         struct CtdlMessage *msg;
3508
3509         char *raw_message = NULL;
3510         char *encoded_message = NULL;
3511         off_t raw_length = 0;
3512
3513         if (is_mailbox != NULL)
3514                 MailboxName(roomname, sizeof roomname, is_mailbox, req_room);
3515         else
3516                 safestrncpy(roomname, req_room, sizeof(roomname));
3517         lprintf(CTDL_DEBUG, "CtdlWriteObject() to <%s> (flags=%d)\n", roomname, flags);
3518
3519
3520         fp = fopen(tempfilename, "rb");
3521         if (fp == NULL) {
3522                 lprintf(CTDL_CRIT, "Cannot open %s: %s\n",
3523                         tempfilename, strerror(errno));
3524                 return;
3525         }
3526         fseek(fp, 0L, SEEK_END);
3527         raw_length = ftell(fp);
3528         rewind(fp);
3529         lprintf(CTDL_DEBUG, "Raw length is %ld\n", (long)raw_length);
3530
3531         raw_message = malloc((size_t)raw_length + 2);
3532         fread(raw_message, (size_t)raw_length, 1, fp);
3533         fclose(fp);
3534
3535         if (is_binary) {
3536                 encoded_message = malloc((size_t)
3537                         (((raw_length * 134) / 100) + 4096 ) );
3538         }
3539         else {
3540                 encoded_message = malloc((size_t)(raw_length + 4096));
3541         }
3542
3543         sprintf(encoded_message, "Content-type: %s\n", content_type);
3544
3545         if (is_binary) {
3546                 sprintf(&encoded_message[strlen(encoded_message)],
3547                         "Content-transfer-encoding: base64\n\n"
3548                 );
3549         }
3550         else {
3551                 sprintf(&encoded_message[strlen(encoded_message)],
3552                         "Content-transfer-encoding: 7bit\n\n"
3553                 );
3554         }
3555
3556         if (is_binary) {
3557                 CtdlEncodeBase64(
3558                         &encoded_message[strlen(encoded_message)],
3559                         raw_message,
3560                         (int)raw_length
3561                 );
3562         }
3563         else {
3564                 raw_message[raw_length] = 0;
3565                 memcpy(
3566                         &encoded_message[strlen(encoded_message)],
3567                         raw_message,
3568                         (int)(raw_length+1)
3569                 );
3570         }
3571
3572         free(raw_message);
3573
3574         lprintf(CTDL_DEBUG, "Allocating\n");
3575         msg = malloc(sizeof(struct CtdlMessage));
3576         memset(msg, 0, sizeof(struct CtdlMessage));
3577         msg->cm_magic = CTDLMESSAGE_MAGIC;
3578         msg->cm_anon_type = MES_NORMAL;
3579         msg->cm_format_type = 4;
3580         msg->cm_fields['A'] = strdup(CC->user.fullname);
3581         msg->cm_fields['O'] = strdup(req_room);
3582         msg->cm_fields['N'] = strdup(config.c_nodename);
3583         msg->cm_fields['H'] = strdup(config.c_humannode);
3584         msg->cm_flags = flags;
3585
3586         msg->cm_fields['M'] = encoded_message;
3587
3588         /* Create the requested room if we have to. */
3589         if (getroom(&qrbuf, roomname) != 0) {
3590                 create_room(roomname,
3591                         ( (is_mailbox != NULL) ? 5 : 3 ),
3592                         "", 0, 1, 0, VIEW_BBS);
3593         }
3594         /* If the caller specified this object as unique, delete all
3595          * other objects of this type that are currently in the room.
3596          */
3597         if (is_unique) {
3598                 lprintf(CTDL_DEBUG, "Deleted %d other msgs of this type\n",
3599                         CtdlDeleteMessages(roomname, 0L, content_type, 0)
3600                 );
3601         }
3602         /* Now write the data */
3603         CtdlSubmitMsg(msg, NULL, roomname);
3604         CtdlFreeMessage(msg);
3605 }
3606
3607
3608
3609
3610
3611
3612 void CtdlGetSysConfigBackend(long msgnum, void *userdata) {
3613         config_msgnum = msgnum;
3614 }
3615
3616
3617 char *CtdlGetSysConfig(char *sysconfname) {
3618         char hold_rm[ROOMNAMELEN];
3619         long msgnum;
3620         char *conf;
3621         struct CtdlMessage *msg;
3622         char buf[SIZ];
3623
3624         strcpy(hold_rm, CC->room.QRname);
3625         if (getroom(&CC->room, SYSCONFIGROOM) != 0) {
3626                 getroom(&CC->room, hold_rm);
3627                 return NULL;
3628         }
3629
3630
3631         /* We want the last (and probably only) config in this room */
3632         begin_critical_section(S_CONFIG);
3633         config_msgnum = (-1L);
3634         CtdlForEachMessage(MSGS_LAST, 1, sysconfname, NULL,
3635                 CtdlGetSysConfigBackend, NULL);
3636         msgnum = config_msgnum;
3637         end_critical_section(S_CONFIG);
3638
3639         if (msgnum < 0L) {
3640                 conf = NULL;
3641         }
3642         else {
3643                 msg = CtdlFetchMessage(msgnum, 1);
3644                 if (msg != NULL) {
3645                         conf = strdup(msg->cm_fields['M']);
3646                         CtdlFreeMessage(msg);
3647                 }
3648                 else {
3649                         conf = NULL;
3650                 }
3651         }
3652
3653         getroom(&CC->room, hold_rm);
3654
3655         if (conf != NULL) do {
3656                 extract_token(buf, conf, 0, '\n', sizeof buf);
3657                 strcpy(conf, &conf[strlen(buf)+1]);
3658         } while ( (strlen(conf)>0) && (strlen(buf)>0) );
3659
3660         return(conf);
3661 }
3662
3663 void CtdlPutSysConfig(char *sysconfname, char *sysconfdata) {
3664         char temp[PATH_MAX];
3665         FILE *fp;
3666
3667         strcpy(temp, tmpnam(NULL));
3668
3669         fp = fopen(temp, "w");
3670         if (fp == NULL) return;
3671         fprintf(fp, "%s", sysconfdata);
3672         fclose(fp);
3673
3674         /* this handy API function does all the work for us */
3675         CtdlWriteObject(SYSCONFIGROOM, sysconfname, temp, NULL, 0, 1, 0);
3676         unlink(temp);
3677 }
3678
3679
3680 /*
3681  * Determine whether a given Internet address belongs to the current user
3682  */
3683 int CtdlIsMe(char *addr, int addr_buf_len)
3684 {
3685         struct recptypes *recp;
3686         int i;
3687
3688         recp = validate_recipients(addr);
3689         if (recp == NULL) return(0);
3690
3691         if (recp->num_local == 0) {
3692                 free(recp);
3693                 return(0);
3694         }
3695
3696         for (i=0; i<recp->num_local; ++i) {
3697                 extract_token(addr, recp->recp_local, i, '|', addr_buf_len);
3698                 if (!strcasecmp(addr, CC->user.fullname)) {
3699                         free(recp);
3700                         return(1);
3701                 }
3702         }
3703
3704         free(recp);
3705         return(0);
3706 }
3707
3708
3709 /*
3710  * Citadel protocol command to do the same
3711  */
3712 void cmd_isme(char *argbuf) {
3713         char addr[256];
3714
3715         if (CtdlAccessCheck(ac_logged_in)) return;
3716         extract_token(addr, argbuf, 0, '|', sizeof addr);
3717
3718         if (CtdlIsMe(addr, sizeof addr)) {
3719                 cprintf("%d %s\n", CIT_OK, addr);
3720         }
3721         else {
3722                 cprintf("%d Not you.\n", ERROR + ILLEGAL_VALUE);
3723         }
3724
3725 }