citadel/msgbase.c

   1 /*
   2  * $Id$
   3  *
   4  * Implements the message store.
   5  *
   6  */
   7
   8 #include "sysdep.h"
   9 #include <stdlib.h>
  10 #include <unistd.h>
  11 #include <stdio.h>
  12 #include <fcntl.h>
  13
  14 #if TIME_WITH_SYS_TIME
  15 # include <sys/time.h>
  16 # include <time.h>
  17 #else
  18 # if HAVE_SYS_TIME_H
  19 #  include <sys/time.h>
  20 # else
  21 #  include <time.h>
  22 # endif
  23 #endif
  24
  25
  26 #include <ctype.h>
  27 #include <string.h>
  28 #include <limits.h>
  29 #include <errno.h>
  30 #include <stdarg.h>
  31 #include <sys/stat.h>
  32 #include <sys/types.h>
  33 #include <regex.h>
  34 #include <libcitadel.h>
  35 #include "citadel.h"
  36 #include "server.h"
  37 #include "serv_extensions.h"
  38 #include "database.h"
  39 #include "msgbase.h"
  40 #include "support.h"
  41 #include "sysdep_decls.h"
  42 #include "citserver.h"
  43 #include "room_ops.h"
  44 #include "user_ops.h"
  45 #include "file_ops.h"
  46 #include "config.h"
  47 #include "control.h"
  48 #include "genstamp.h"
  49 #include "internet_addressing.h"
  50 #include "euidindex.h"
  51 #include "journaling.h"
  52 #include "citadel_dirs.h"
  53 #include "clientsocket.h"
  54 #include "serv_network.h"
  55 #include "threads.h"
  56
  57 long config_msgnum;
  58 struct addresses_to_be_filed *atbf = NULL;
  59
  60 /* This temp file holds the queue of operations for AdjRefCount() */
  61 static FILE *arcfp = NULL;
  62
  63 /*
  64  * This really belongs in serv_network.c, but I don't know how to export
  65  * symbols between modules.
  66  */
  67 struct FilterList *filterlist = NULL;
  68
  69
  70 /*
  71  * These are the four-character field headers we use when outputting
  72  * messages in Citadel format (as opposed to RFC822 format).
  73  */
  74 char *msgkeys[] = {
  75         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  76         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  77         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  78         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  79         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  80         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  81         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  82         NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
  83         NULL,
  84         "from",
  85         NULL, NULL, NULL,
  86         "exti",
  87         "rfca",
  88         NULL,
  89         "hnod",
  90         "msgn",
  91         "jrnl",
  92         NULL, NULL,
  93         "text",
  94         "node",
  95         "room",
  96         "path",
  97         NULL,
  98         "rcpt",
  99         "spec",
 100         "time",
 101         "subj",
 102         NULL,
 103         "wefw",
 104         NULL,
 105         "cccc",
 106         NULL
 107 };
 108
 109 /*
 110  * This function is self explanatory.
 111  * (What can I say, I'm in a weird mood today...)
 112  */
 113 void remove_any_whitespace_to_the_left_or_right_of_at_symbol(char *name)
 114 {
 115         int i;
 116
 117         for (i = 0; i < strlen(name); ++i) {
 118                 if (name[i] == '@') {
 119                         while (isspace(name[i - 1]) && i > 0) {
 120                                 strcpy(&name[i - 1], &name[i]);
 121                                 --i;
 122                         }
 123                         while (isspace(name[i + 1])) {
 124                                 strcpy(&name[i + 1], &name[i + 2]);
 125                         }
 126                 }
 127         }
 128 }
 129
 130
 131 /*
 132  * Aliasing for network mail.
 133  * (Error messages have been commented out, because this is a server.)
 134  */
 135 int alias(char *name)
 136 {                               /* process alias and routing info for mail */
 137         FILE *fp;
 138         int a, i;
 139         char aaa[SIZ], bbb[SIZ];
 140         char *ignetcfg = NULL;
 141         char *ignetmap = NULL;
 142         int at = 0;
 143         char node[64];
 144         char testnode[64];
 145         char buf[SIZ];
 146
 147         char original_name[256];
 148         safestrncpy(original_name, name, sizeof original_name);
 149
 150         striplt(name);
 151         remove_any_whitespace_to_the_left_or_right_of_at_symbol(name);
 152         stripallbut(name, '<', '>');
 153
 154         fp = fopen(file_mail_aliases, "r");
 155         if (fp == NULL) {
 156                 fp = fopen("/dev/null", "r");
 157         }
 158         if (fp == NULL) {
 159                 return (MES_ERROR);
 160         }
 161         strcpy(aaa, "");
 162         strcpy(bbb, "");
 163         while (fgets(aaa, sizeof aaa, fp) != NULL) {
 164                 while (isspace(name[0]))
 165                         strcpy(name, &name[1]);
 166                 aaa[strlen(aaa) - 1] = 0;
 167                 strcpy(bbb, "");
 168                 for (a = 0; a < strlen(aaa); ++a) {
 169                         if (aaa[a] == ',') {
 170                                 strcpy(bbb, &aaa[a + 1]);
 171                                 aaa[a] = 0;
 172                         }
 173                 }
 174                 if (!strcasecmp(name, aaa))
 175                         strcpy(name, bbb);
 176         }
 177         fclose(fp);
 178
 179         /* Hit the Global Address Book */
 180         if (CtdlDirectoryLookup(aaa, name, sizeof aaa) == 0) {
 181                 strcpy(name, aaa);
 182         }
 183
 184         if (strcasecmp(original_name, name)) {
 185                 CtdlLogPrintf(CTDL_INFO, "%s is being forwarded to %s\n", original_name, name);
 186         }
 187
 188         /* Change "user @ xxx" to "user" if xxx is an alias for this host */
 189         for (a=0; a<strlen(name); ++a) {
 190                 if (name[a] == '@') {
 191                         if (CtdlHostAlias(&name[a+1]) == hostalias_localhost) {
 192                                 name[a] = 0;
 193                                 CtdlLogPrintf(CTDL_INFO, "Changed to <%s>\n", name);
 194                         }
 195                 }
 196         }
 197
 198         /* determine local or remote type, see citadel.h */
 199         at = haschar(name, '@');
 200         if (at == 0) return(MES_LOCAL);         /* no @'s - local address */
 201         if (at > 1) return(MES_ERROR);          /* >1 @'s - invalid address */
 202         remove_any_whitespace_to_the_left_or_right_of_at_symbol(name);
 203
 204         /* figure out the delivery mode */
 205         extract_token(node, name, 1, '@', sizeof node);
 206
 207         /* If there are one or more dots in the nodename, we assume that it
 208          * is an FQDN and will attempt SMTP delivery to the Internet.
 209          */
 210         if (haschar(node, '.') > 0) {
 211                 return(MES_INTERNET);
 212         }
 213
 214         /* Otherwise we look in the IGnet maps for a valid Citadel node.
 215          * Try directly-connected nodes first...
 216          */
 217         ignetcfg = CtdlGetSysConfig(IGNETCFG);
 218         for (i=0; i<num_tokens(ignetcfg, '\n'); ++i) {
 219                 extract_token(buf, ignetcfg, i, '\n', sizeof buf);
 220                 extract_token(testnode, buf, 0, '|', sizeof testnode);
 221                 if (!strcasecmp(node, testnode)) {
 222                         free(ignetcfg);
 223                         return(MES_IGNET);
 224                 }
 225         }
 226         free(ignetcfg);
 227
 228         /*
 229          * Then try nodes that are two or more hops away.
 230          */
 231         ignetmap = CtdlGetSysConfig(IGNETMAP);
 232         for (i=0; i<num_tokens(ignetmap, '\n'); ++i) {
 233                 extract_token(buf, ignetmap, i, '\n', sizeof buf);
 234                 extract_token(testnode, buf, 0, '|', sizeof testnode);
 235                 if (!strcasecmp(node, testnode)) {
 236                         free(ignetmap);
 237                         return(MES_IGNET);
 238                 }
 239         }
 240         free(ignetmap);
 241
 242         /* If we get to this point it's an invalid node name */
 243         return (MES_ERROR);
 244 }
 245
 246
 247 /*
 248  * Back end for the MSGS command: output message number only.
 249  */
 250 void simple_listing(long msgnum, void *userdata)
 251 {
 252         cprintf("%ld\n", msgnum);
 253 }
 254
 255
 256
 257 /*
 258  * Back end for the MSGS command: output header summary.
 259  */
 260 void headers_listing(long msgnum, void *userdata)
 261 {
 262         struct CtdlMessage *msg;
 263
 264         msg = CtdlFetchMessage(msgnum, 0);
 265         if (msg == NULL) {
 266                 cprintf("%ld|0|||||\n", msgnum);
 267                 return;
 268         }
 269
 270         cprintf("%ld|%s|%s|%s|%s|%s|\n",
 271                 msgnum,
 272                 (msg->cm_fields['T'] ? msg->cm_fields['T'] : "0"),
 273                 (msg->cm_fields['A'] ? msg->cm_fields['A'] : ""),
 274                 (msg->cm_fields['N'] ? msg->cm_fields['N'] : ""),
 275                 (msg->cm_fields['F'] ? msg->cm_fields['F'] : ""),
 276                 (msg->cm_fields['U'] ? msg->cm_fields['U'] : "")
 277         );
 278         CtdlFreeMessage(msg);
 279 }
 280
 281
 282
 283 /* Determine if a given message matches the fields in a message template.
 284  * Return 0 for a successful match.
 285  */
 286 int CtdlMsgCmp(struct CtdlMessage *msg, struct CtdlMessage *template) {
 287         int i;
 288
 289         /* If there aren't any fields in the template, all messages will
 290          * match.
 291          */
 292         if (template == NULL) return(0);
 293
 294         /* Null messages are bogus. */
 295         if (msg == NULL) return(1);
 296
 297         for (i='A'; i<='Z'; ++i) {
 298                 if (template->cm_fields[i] != NULL) {
 299                         if (msg->cm_fields[i] == NULL) {
 300                                 return 1;
 301                         }
 302                         if (strcasecmp(msg->cm_fields[i],
 303                                 template->cm_fields[i])) return 1;
 304                 }
 305         }
 306
 307         /* All compares succeeded: we have a match! */
 308         return 0;
 309 }
 310
 311
 312
 313 /*
 314  * Retrieve the "seen" message list for the current room.
 315  */
 316 void CtdlGetSeen(char *buf, int which_set) {
 317         struct visit vbuf;
 318
 319         /* Learn about the user and room in question */
 320         CtdlGetRelationship(&vbuf, &CC->user, &CC->room);
 321
 322         if (which_set == ctdlsetseen_seen)
 323                 safestrncpy(buf, vbuf.v_seen, SIZ);
 324         if (which_set == ctdlsetseen_answered)
 325                 safestrncpy(buf, vbuf.v_answered, SIZ);
 326 }
 327
 328
 329
 330 /*
 331  * Manipulate the "seen msgs" string (or other message set strings)
 332  */
 333 void CtdlSetSeen(long *target_msgnums, int num_target_msgnums,
 334                 int target_setting, int which_set,
 335                 struct ctdluser *which_user, struct ctdlroom *which_room) {
 336         struct cdbdata *cdbfr;
 337         int i, j, k;
 338         int is_seen = 0;
 339         int was_seen = 0;
 340         long lo = (-1L);
 341         long hi = (-1L);
 342         long t = (-1L);
 343         int trimming = 0;
 344         struct visit vbuf;
 345         long *msglist;
 346         int num_msgs = 0;
 347         char vset[SIZ];
 348         char *is_set;   /* actually an array of booleans */
 349         int num_sets;
 350         int s;
 351         char setstr[SIZ], lostr[SIZ], histr[SIZ];
 352         size_t tmp;
 353
 354         /* Don't bother doing *anything* if we were passed a list of zero messages */
 355         if (num_target_msgnums < 1) {
 356                 return;
 357         }
 358
 359         CtdlLogPrintf(CTDL_DEBUG, "CtdlSetSeen(%d msgs starting with %ld, %d, %d)\n",
 360                 num_target_msgnums, target_msgnums[0],
 361                 target_setting, which_set);
 362
 363         /* Learn about the user and room in question */
 364         CtdlGetRelationship(&vbuf,
 365                 ((which_user != NULL) ? which_user : &CC->user),
 366                 ((which_room != NULL) ? which_room : &CC->room)
 367         );
 368
 369         /* Load the message list */
 370         cdbfr = cdb_fetch(CDB_MSGLISTS, &CC->room.QRnumber, sizeof(long));
 371         if (cdbfr != NULL) {
 372                 msglist = (long *) cdbfr->ptr;
 373                 cdbfr->ptr = NULL;      /* CtdlSetSeen() now owns this memory */
 374                 num_msgs = cdbfr->len / sizeof(long);
 375                 cdb_free(cdbfr);
 376         } else {
 377                 return; /* No messages at all?  No further action. */
 378         }
 379
 380         is_set = malloc(num_msgs * sizeof(char));
 381         memset(is_set, 0, (num_msgs * sizeof(char)) );
 382
 383         /* Decide which message set we're manipulating */
 384         switch(which_set) {
 385                 case ctdlsetseen_seen:
 386                         safestrncpy(vset, vbuf.v_seen, sizeof vset);
 387                         break;
 388                 case ctdlsetseen_answered:
 389                         safestrncpy(vset, vbuf.v_answered, sizeof vset);
 390                         break;
 391         }
 392
 393         /* CtdlLogPrintf(CTDL_DEBUG, "before optimize: %s\n", vset); */
 394
 395         /* Translate the existing sequence set into an array of booleans */
 396         num_sets = num_tokens(vset, ',');
 397         for (s=0; s<num_sets; ++s) {
 398                 extract_token(setstr, vset, s, ',', sizeof setstr);
 399
 400                 extract_token(lostr, setstr, 0, ':', sizeof lostr);
 401                 if (num_tokens(setstr, ':') >= 2) {
 402                         extract_token(histr, setstr, 1, ':', sizeof histr);
 403                         if (!strcmp(histr, "*")) {
 404                                 snprintf(histr, sizeof histr, "%ld", LONG_MAX);
 405                         }
 406                 }
 407                 else {
 408                         strcpy(histr, lostr);
 409                 }
 410                 lo = atol(lostr);
 411                 hi = atol(histr);
 412
 413                 for (i = 0; i < num_msgs; ++i) {
 414                         if ((msglist[i] >= lo) && (msglist[i] <= hi)) {
 415                                 is_set[i] = 1;
 416                         }
 417                 }
 418         }
 419
 420         /* Now translate the array of booleans back into a sequence set */
 421         strcpy(vset, "");
 422         lo = (-1L);
 423         hi = (-1L);
 424
 425         for (i=0; i<num_msgs; ++i) {
 426
 427                 is_seen = is_set[i];    /* Default to existing setting */
 428
 429                 for (k=0; k<num_target_msgnums; ++k) {
 430                         if (msglist[i] == target_msgnums[k]) {
 431                                 is_seen = target_setting;
 432                         }
 433                 }
 434
 435                 if (is_seen) {
 436                         if (lo < 0L) lo = msglist[i];
 437                         hi = msglist[i];
 438                 }
 439
 440                 if (  ((is_seen == 0) && (was_seen == 1))
 441                    || ((is_seen == 1) && (i == num_msgs-1)) ) {
 442
 443                         /* begin trim-o-matic code */
 444                         j=9;
 445                         trimming = 0;
 446                         while ( (strlen(vset) + 20) > sizeof vset) {
 447                                 remove_token(vset, 0, ',');
 448                                 trimming = 1;
 449                                 if (j--) break; /* loop no more than 9 times */
 450                         }
 451                         if ( (trimming) && (which_set == ctdlsetseen_seen) ) {
 452                                 t = atol(vset);
 453                                 if (t<2) t=2;
 454                                 --t;
 455                                 snprintf(lostr, sizeof lostr,
 456                                         "1:%ld,%s", t, vset);
 457                                 safestrncpy(vset, lostr, sizeof vset);
 458                         }
 459                         /* end trim-o-matic code */
 460
 461                         tmp = strlen(vset);
 462                         if (tmp > 0) {
 463                                 strcat(vset, ",");
 464                                 ++tmp;
 465                         }
 466                         if (lo == hi) {
 467                                 snprintf(&vset[tmp], (sizeof vset) - tmp,
 468                                          "%ld", lo);
 469                         }
 470                         else {
 471                                 snprintf(&vset[tmp], (sizeof vset) - tmp,
 472                                          "%ld:%ld", lo, hi);
 473                         }
 474                         lo = (-1L);
 475                         hi = (-1L);
 476                 }
 477                 was_seen = is_seen;
 478         }
 479
 480         /* Decide which message set we're manipulating */
 481         switch (which_set) {
 482                 case ctdlsetseen_seen:
 483                         safestrncpy(vbuf.v_seen, vset, sizeof vbuf.v_seen);
 484                         break;
 485                 case ctdlsetseen_answered:
 486                         safestrncpy(vbuf.v_answered, vset,
 487                                                 sizeof vbuf.v_answered);
 488                         break;
 489         }
 490         free(is_set);
 491
 492         /* CtdlLogPrintf(CTDL_DEBUG, " after optimize: %s\n", vset); */
 493         free(msglist);
 494         CtdlSetRelationship(&vbuf,
 495                 ((which_user != NULL) ? which_user : &CC->user),
 496                 ((which_room != NULL) ? which_room : &CC->room)
 497         );
 498 }
 499
 500
 501 /*
 502  * API function to perform an operation for each qualifying message in the
 503  * current room.  (Returns the number of messages processed.)
 504  */
 505 int CtdlForEachMessage(int mode, long ref, char *search_string,
 506                         char *content_type,
 507                         struct CtdlMessage *compare,
 508                         void (*CallBack) (long, void *),
 509                         void *userdata)
 510 {
 511
 512         int a, i, j;
 513         struct visit vbuf;
 514         struct cdbdata *cdbfr;
 515         long *msglist = NULL;
 516         int num_msgs = 0;
 517         int num_processed = 0;
 518         long thismsg;
 519         struct MetaData smi;
 520         struct CtdlMessage *msg = NULL;
 521         int is_seen = 0;
 522         long lastold = 0L;
 523         int printed_lastold = 0;
 524         int num_search_msgs = 0;
 525         long *search_msgs = NULL;
 526         regex_t re;
 527         int need_to_free_re = 0;
 528         regmatch_t pm;
 529
 530         if (content_type) if (!IsEmptyStr(content_type)) {
 531                 regcomp(&re, content_type, 0);
 532                 need_to_free_re = 1;
 533         }
 534
 535         /* Learn about the user and room in question */
 536         getuser(&CC->user, CC->curr_user);
 537         CtdlGetRelationship(&vbuf, &CC->user, &CC->room);
 538
 539         /* Load the message list */
 540         cdbfr = cdb_fetch(CDB_MSGLISTS, &CC->room.QRnumber, sizeof(long));
 541         if (cdbfr != NULL) {
 542                 msglist = (long *) cdbfr->ptr;
 543                 num_msgs = cdbfr->len / sizeof(long);
 544         } else {
 545                 if (need_to_free_re) regfree(&re);
 546                 return 0;       /* No messages at all?  No further action. */
 547         }
 548
 549
 550         /*
 551          * Now begin the traversal.
 552          */
 553         if (num_msgs > 0) for (a = 0; a < num_msgs; ++a) {
 554
 555                 /* If the caller is looking for a specific MIME type, filter
 556                  * out all messages which are not of the type requested.
 557                  */
 558                 if (content_type != NULL) if (!IsEmptyStr(content_type)) {
 559
 560                         /* This call to GetMetaData() sits inside this loop
 561                          * so that we only do the extra database read per msg
 562                          * if we need to.  Doing the extra read all the time
 563                          * really kills the server.  If we ever need to use
 564                          * metadata for another search criterion, we need to
 565                          * move the read somewhere else -- but still be smart
 566                          * enough to only do the read if the caller has
 567                          * specified something that will need it.
 568                          */
 569                         GetMetaData(&smi, msglist[a]);
 570
 571                         /* if (strcasecmp(smi.meta_content_type, content_type)) { old non-regex way */
 572                         if (regexec(&re, smi.meta_content_type, 1, &pm, 0) != 0) {
 573                                 msglist[a] = 0L;
 574                         }
 575                 }
 576         }
 577
 578         num_msgs = sort_msglist(msglist, num_msgs);
 579
 580         /* If a template was supplied, filter out the messages which
 581          * don't match.  (This could induce some delays!)
 582          */
 583         if (num_msgs > 0) {
 584                 if (compare != NULL) {
 585                         for (a = 0; a < num_msgs; ++a) {
 586                                 msg = CtdlFetchMessage(msglist[a], 1);
 587                                 if (msg != NULL) {
 588                                         if (CtdlMsgCmp(msg, compare)) {
 589                                                 msglist[a] = 0L;
 590                                         }
 591                                         CtdlFreeMessage(msg);
 592                                 }
 593                         }
 594                 }
 595         }
 596
 597         /* If a search string was specified, get a message list from
 598          * the full text index and remove messages which aren't on both
 599          * lists.
 600          *
 601          * How this works:
 602          * Since the lists are sorted and strictly ascending, and the
 603          * output list is guaranteed to be shorter than or equal to the
 604          * input list, we overwrite the bottom of the input list.  This
 605          * eliminates the need to memmove big chunks of the list over and
 606          * over again.
 607          */
 608         if ( (num_msgs > 0) && (mode == MSGS_SEARCH) && (search_string) ) {
 609
 610                 /* Call search module via hook mechanism.
 611                  * NULL means use any search function available.
 612                  * otherwise replace with a char * to name of search routine
 613                  */
 614                 CtdlModuleDoSearch(&num_search_msgs, &search_msgs, search_string, "fulltext");
 615
 616                 if (num_search_msgs > 0) {
 617
 618                         int orig_num_msgs;
 619
 620                         orig_num_msgs = num_msgs;
 621                         num_msgs = 0;
 622                         for (i=0; i<orig_num_msgs; ++i) {
 623                                 for (j=0; j<num_search_msgs; ++j) {
 624                                         if (msglist[i] == search_msgs[j]) {
 625                                                 msglist[num_msgs++] = msglist[i];
 626                                         }
 627                                 }
 628                         }
 629                 }
 630                 else {
 631                         num_msgs = 0;   /* No messages qualify */
 632                 }
 633                 if (search_msgs != NULL) free(search_msgs);
 634
 635                 /* Now that we've purged messages which don't contain the search
 636                  * string, treat a MSGS_SEARCH just like a MSGS_ALL from this
 637                  * point on.
 638                  */
 639                 mode = MSGS_ALL;
 640         }
 641
 642         /*
 643          * Now iterate through the message list, according to the
 644          * criteria supplied by the caller.
 645          */
 646         if (num_msgs > 0)
 647                 for (a = 0; a < num_msgs; ++a) {
 648                         thismsg = msglist[a];
 649                         if (mode == MSGS_ALL) {
 650                                 is_seen = 0;
 651                         }
 652                         else {
 653                                 is_seen = is_msg_in_sequence_set(
 654                                                         vbuf.v_seen, thismsg);
 655                                 if (is_seen) lastold = thismsg;
 656                         }
 657                         if ((thismsg > 0L)
 658                             && (
 659
 660                                        (mode == MSGS_ALL)
 661                                        || ((mode == MSGS_OLD) && (is_seen))
 662                                        || ((mode == MSGS_NEW) && (!is_seen))
 663                                        || ((mode == MSGS_LAST) && (a >= (num_msgs - ref)))
 664                                    || ((mode == MSGS_FIRST) && (a < ref))
 665                                 || ((mode == MSGS_GT) && (thismsg > ref))
 666                                 || ((mode == MSGS_EQ) && (thismsg == ref))
 667                             )
 668                             ) {
 669                                 if ((mode == MSGS_NEW) && (CC->user.flags & US_LASTOLD) && (lastold > 0L) && (printed_lastold == 0) && (!is_seen)) {
 670                                         if (CallBack)
 671                                                 CallBack(lastold, userdata);
 672                                         printed_lastold = 1;
 673                                         ++num_processed;
 674                                 }
 675                                 if (CallBack) CallBack(thismsg, userdata);
 676                                 ++num_processed;
 677                         }
 678                 }
 679         cdb_free(cdbfr);        /* Clean up */
 680         if (need_to_free_re) regfree(&re);
 681         return num_processed;
 682 }
 683
 684
 685
 686 /*
 687  * cmd_msgs()  -  get list of message #'s in this room
 688  *              implements the MSGS server command using CtdlForEachMessage()
 689  */
 690 void cmd_msgs(char *cmdbuf)
 691 {
 692         int mode = 0;
 693         char which[16];
 694         char buf[256];
 695         char tfield[256];
 696         char tvalue[256];
 697         int cm_ref = 0;
 698         int i;
 699         int with_template = 0;
 700         struct CtdlMessage *template = NULL;
 701         int with_headers = 0;
 702         char search_string[1024];
 703
 704         extract_token(which, cmdbuf, 0, '|', sizeof which);
 705         cm_ref = extract_int(cmdbuf, 1);
 706         extract_token(search_string, cmdbuf, 1, '|', sizeof search_string);
 707         with_template = extract_int(cmdbuf, 2);
 708         with_headers = extract_int(cmdbuf, 3);
 709
 710         strcat(which, "   ");
 711         if (!strncasecmp(which, "OLD", 3))
 712                 mode = MSGS_OLD;
 713         else if (!strncasecmp(which, "NEW", 3))
 714                 mode = MSGS_NEW;
 715         else if (!strncasecmp(which, "FIRST", 5))
 716                 mode = MSGS_FIRST;
 717         else if (!strncasecmp(which, "LAST", 4))
 718                 mode = MSGS_LAST;
 719         else if (!strncasecmp(which, "GT", 2))
 720                 mode = MSGS_GT;
 721         else if (!strncasecmp(which, "SEARCH", 6))
 722                 mode = MSGS_SEARCH;
 723         else
 724                 mode = MSGS_ALL;
 725
 726         if ((!(CC->logged_in)) && (!(CC->internal_pgm))) {
 727                 cprintf("%d not logged in\n", ERROR + NOT_LOGGED_IN);
 728                 return;
 729         }
 730
 731         if ( (mode == MSGS_SEARCH) && (!config.c_enable_fulltext) ) {
 732                 cprintf("%d Full text index is not enabled on this server.\n",
 733                         ERROR + CMD_NOT_SUPPORTED);
 734                 return;
 735         }
 736
 737         if (with_template) {
 738                 unbuffer_output();
 739                 cprintf("%d Send template then receive message list\n",
 740                         START_CHAT_MODE);
 741                 template = (struct CtdlMessage *)
 742                         malloc(sizeof(struct CtdlMessage));
 743                 memset(template, 0, sizeof(struct CtdlMessage));
 744                 template->cm_magic = CTDLMESSAGE_MAGIC;
 745                 template->cm_anon_type = MES_NORMAL;
 746
 747                 while(client_getln(buf, sizeof buf) >= 0 && strcmp(buf,"000")) {
 748                         extract_token(tfield, buf, 0, '|', sizeof tfield);
 749                         extract_token(tvalue, buf, 1, '|', sizeof tvalue);
 750                         for (i='A'; i<='Z'; ++i) if (msgkeys[i]!=NULL) {
 751                                 if (!strcasecmp(tfield, msgkeys[i])) {
 752                                         template->cm_fields[i] =
 753                                                 strdup(tvalue);
 754                                 }
 755                         }
 756                 }
 757                 buffer_output();
 758         }
 759         else {
 760                 cprintf("%d  \n", LISTING_FOLLOWS);
 761         }
 762
 763         CtdlForEachMessage(mode,
 764                         ( (mode == MSGS_SEARCH) ? 0 : cm_ref ),
 765                         ( (mode == MSGS_SEARCH) ? search_string : NULL ),
 766                         NULL,
 767                         template,
 768                         (with_headers ? headers_listing : simple_listing),
 769                         NULL
 770         );
 771         if (template != NULL) CtdlFreeMessage(template);
 772         cprintf("000\n");
 773 }
 774
 775
 776
 777
 778 /*
 779  * help_subst()  -  support routine for help file viewer
 780  */
 781 void help_subst(char *strbuf, char *source, char *dest)
 782 {
 783         char workbuf[SIZ];
 784         int p;
 785
 786         while (p = pattern2(strbuf, source), (p >= 0)) {
 787                 strcpy(workbuf, &strbuf[p + strlen(source)]);
 788                 strcpy(&strbuf[p], dest);
 789                 strcat(strbuf, workbuf);
 790         }
 791 }
 792
 793
 794 void do_help_subst(char *buffer)
 795 {
 796         char buf2[16];
 797
 798         help_subst(buffer, "^nodename", config.c_nodename);
 799         help_subst(buffer, "^humannode", config.c_humannode);
 800         help_subst(buffer, "^fqdn", config.c_fqdn);
 801         help_subst(buffer, "^username", CC->user.fullname);
 802         snprintf(buf2, sizeof buf2, "%ld", CC->user.usernum);
 803         help_subst(buffer, "^usernum", buf2);
 804         help_subst(buffer, "^sysadm", config.c_sysadm);
 805         help_subst(buffer, "^variantname", CITADEL);
 806         snprintf(buf2, sizeof buf2, "%d", config.c_maxsessions);
 807         help_subst(buffer, "^maxsessions", buf2);
 808         help_subst(buffer, "^bbsdir", ctdl_message_dir);
 809 }
 810
 811
 812
 813 /*
 814  * memfmout()  -  Citadel text formatter and paginator.
 815  *           Although the original purpose of this routine was to format
 816  *           text to the reader's screen width, all we're really using it
 817  *           for here is to format text out to 80 columns before sending it
 818  *           to the client.  The client software may reformat it again.
 819  */
 820 void memfmout(
 821         char *mptr,             /* where are we going to get our text from? */
 822         char subst,             /* nonzero if we should do substitutions */
 823         char *nl)               /* string to terminate lines with */
 824 {
 825         int a, b, c;
 826         int real = 0;
 827         int old = 0;
 828         cit_uint8_t ch;
 829         char aaa[140];
 830         char buffer[SIZ];
 831         static int width = 80;
 832
 833         strcpy(aaa, "");
 834         old = 255;
 835         strcpy(buffer, "");
 836         c = 1;                  /* c is the current pos */
 837
 838         do {
 839                 if (subst) {
 840                         while (ch = *mptr, ((ch != 0) && (strlen(buffer) < 126))) {
 841                                 ch = *mptr++;
 842                                 buffer[strlen(buffer) + 1] = 0;
 843                                 buffer[strlen(buffer)] = ch;
 844                         }
 845
 846                         if (buffer[0] == '^')
 847                                 do_help_subst(buffer);
 848
 849                         buffer[strlen(buffer) + 1] = 0;
 850                         a = buffer[0];
 851                         strcpy(buffer, &buffer[1]);
 852                 } else {
 853                         ch = *mptr++;
 854                 }
 855
 856                 old = real;
 857                 real = ch;
 858
 859                 if (((ch == 13) || (ch == 10)) && (old != 13) && (old != 10)) {
 860                         ch = 32;
 861                 }
 862                 if (((old == 13) || (old == 10)) && (isspace(real))) {
 863                         cprintf("%s", nl);
 864                         c = 1;
 865                 }
 866                 if (ch > 32) {
 867                         if (((strlen(aaa) + c) > (width - 5)) && (strlen(aaa) > (width - 5))) {
 868                                 cprintf("%s%s", nl, aaa);
 869                                 c = strlen(aaa);
 870                                 aaa[0] = 0;
 871                         }
 872                         b = strlen(aaa);
 873                         aaa[b] = ch;
 874                         aaa[b + 1] = 0;
 875                 }
 876                 if (ch == 32) {
 877                         if ((strlen(aaa) + c) > (width - 5)) {
 878                                 cprintf("%s", nl);
 879                                 c = 1;
 880                         }
 881                         cprintf("%s ", aaa);
 882                         ++c;
 883                         c = c + strlen(aaa);
 884                         strcpy(aaa, "");
 885                 }
 886                 if ((ch == 13) || (ch == 10)) {
 887                         cprintf("%s%s", aaa, nl);
 888                         c = 1;
 889                         strcpy(aaa, "");
 890                 }
 891
 892         } while (ch > 0);
 893
 894         cprintf("%s%s", aaa, nl);
 895 }
 896
 897
 898
 899 /*
 900  * Callback function for mime parser that simply lists the part
 901  */
 902 void list_this_part(char *name, char *filename, char *partnum, char *disp,
 903                     void *content, char *cbtype, char *cbcharset, size_t length, char *encoding,
 904                     void *cbuserdata)
 905 {
 906         struct ma_info *ma;
 907
 908         ma = (struct ma_info *)cbuserdata;
 909         if (ma->is_ma == 0) {
 910                 cprintf("part=%s|%s|%s|%s|%s|%ld\n",
 911                         name, filename, partnum, disp, cbtype, (long)length);
 912         }
 913 }
 914
 915 /*
 916  * Callback function for multipart prefix
 917  */
 918 void list_this_pref(char *name, char *filename, char *partnum, char *disp,
 919                     void *content, char *cbtype, char *cbcharset, size_t length, char *encoding,
 920                     void *cbuserdata)
 921 {
 922         struct ma_info *ma;
 923
 924         ma = (struct ma_info *)cbuserdata;
 925         if (!strcasecmp(cbtype, "multipart/alternative")) {
 926                 ++ma->is_ma;
 927         }
 928
 929         if (ma->is_ma == 0) {
 930                 cprintf("pref=%s|%s\n", partnum, cbtype);
 931         }
 932 }
 933
 934 /*
 935  * Callback function for multipart sufffix
 936  */
 937 void list_this_suff(char *name, char *filename, char *partnum, char *disp,
 938                     void *content, char *cbtype, char *cbcharset, size_t length, char *encoding,
 939                     void *cbuserdata)
 940 {
 941         struct ma_info *ma;
 942
 943         ma = (struct ma_info *)cbuserdata;
 944         if (ma->is_ma == 0) {
 945                 cprintf("suff=%s|%s\n", partnum, cbtype);
 946         }
 947         if (!strcasecmp(cbtype, "multipart/alternative")) {
 948                 --ma->is_ma;
 949         }
 950 }
 951
 952
 953 /*
 954  * Callback function for mime parser that opens a section for downloading
 955  */
 956 void mime_download(char *name, char *filename, char *partnum, char *disp,
 957                    void *content, char *cbtype, char *cbcharset, size_t length,
 958                    char *encoding, void *cbuserdata)
 959 {
 960
 961         /* Silently go away if there's already a download open... */
 962         if (CC->download_fp != NULL)
 963                 return;
 964
 965         /* ...or if this is not the desired section */
 966         if (strcasecmp(CC->download_desired_section, partnum))
 967                 return;
 968
 969         CC->download_fp = tmpfile();
 970         if (CC->download_fp == NULL)
 971                 return;
 972
 973         fwrite(content, length, 1, CC->download_fp);
 974         fflush(CC->download_fp);
 975         rewind(CC->download_fp);
 976
 977         OpenCmdResult(filename, cbtype);
 978 }
 979
 980
 981
 982 /*
 983  * Callback function for mime parser that outputs a section all at once
 984  */
 985 void mime_spew_section(char *name, char *filename, char *partnum, char *disp,
 986                    void *content, char *cbtype, char *cbcharset, size_t length,
 987                    char *encoding, void *cbuserdata)
 988 {
 989         int *found_it = (int *)cbuserdata;
 990
 991         /* ...or if this is not the desired section */
 992         if (strcasecmp(CC->download_desired_section, partnum))
 993                 return;
 994
 995         *found_it = 1;
 996
 997         cprintf("%d %d\n", BINARY_FOLLOWS, (int)length);
 998         client_write(content, length);
 999 }
1000
1001
1002
1003 /*
1004  * Load a message from disk into memory.
1005  * This is used by CtdlOutputMsg() and other fetch functions.
1006  *
1007  * NOTE: Caller is responsible for freeing the returned CtdlMessage struct
1008  *       using the CtdlMessageFree() function.
1009  */
1010 struct CtdlMessage *CtdlFetchMessage(long msgnum, int with_body)
1011 {
1012         struct cdbdata *dmsgtext;
1013         struct CtdlMessage *ret = NULL;
1014         char *mptr;
1015         char *upper_bound;
1016         cit_uint8_t ch;
1017         cit_uint8_t field_header;
1018
1019         CtdlLogPrintf(CTDL_DEBUG, "CtdlFetchMessage(%ld, %d)\n", msgnum, with_body);
1020
1021         dmsgtext = cdb_fetch(CDB_MSGMAIN, &msgnum, sizeof(long));
1022         if (dmsgtext == NULL) {
1023                 return NULL;
1024         }
1025         mptr = dmsgtext->ptr;
1026         upper_bound = mptr + dmsgtext->len;
1027
1028         /* Parse the three bytes that begin EVERY message on disk.
1029          * The first is always 0xFF, the on-disk magic number.
1030          * The second is the anonymous/public type byte.
1031          * The third is the format type byte (vari, fixed, or MIME).
1032          */
1033         ch = *mptr++;
1034         if (ch != 255) {
1035                 CtdlLogPrintf(CTDL_ERR, "Message %ld appears to be corrupted.\n", msgnum);
1036                 cdb_free(dmsgtext);
1037                 return NULL;
1038         }
1039         ret = (struct CtdlMessage *) malloc(sizeof(struct CtdlMessage));
1040         memset(ret, 0, sizeof(struct CtdlMessage));
1041
1042         ret->cm_magic = CTDLMESSAGE_MAGIC;
1043         ret->cm_anon_type = *mptr++;    /* Anon type byte */
1044         ret->cm_format_type = *mptr++;  /* Format type byte */
1045
1046         /*
1047          * The rest is zero or more arbitrary fields.  Load them in.
1048          * We're done when we encounter either a zero-length field or
1049          * have just processed the 'M' (message text) field.
1050          */
1051         do {
1052                 if (mptr >= upper_bound) {
1053                         break;
1054                 }
1055                 field_header = *mptr++;
1056                 ret->cm_fields[field_header] = strdup(mptr);
1057
1058                 while (*mptr++ != 0);   /* advance to next field */
1059
1060         } while ((mptr < upper_bound) && (field_header != 'M'));
1061
1062         cdb_free(dmsgtext);
1063
1064         /* Always make sure there's something in the msg text field.  If
1065          * it's NULL, the message text is most likely stored separately,
1066          * so go ahead and fetch that.  Failing that, just set a dummy
1067          * body so other code doesn't barf.
1068          */
1069         if ( (ret->cm_fields['M'] == NULL) && (with_body) ) {
1070                 dmsgtext = cdb_fetch(CDB_BIGMSGS, &msgnum, sizeof(long));
1071                 if (dmsgtext != NULL) {
1072                         ret->cm_fields['M'] = strdup(dmsgtext->ptr);
1073                         cdb_free(dmsgtext);
1074                 }
1075         }
1076         if (ret->cm_fields['M'] == NULL) {
1077                 ret->cm_fields['M'] = strdup("\r\n\r\n (no text)\r\n");
1078         }
1079
1080         /* Perform "before read" hooks (aborting if any return nonzero) */
1081         if (PerformMessageHooks(ret, EVT_BEFOREREAD) > 0) {
1082                 CtdlFreeMessage(ret);
1083                 return NULL;
1084         }
1085
1086         return (ret);
1087 }
1088
1089
1090 /*
1091  * Returns 1 if the supplied pointer points to a valid Citadel message.
1092  * If the pointer is NULL or the magic number check fails, returns 0.
1093  */
1094 int is_valid_message(struct CtdlMessage *msg) {
1095         if (msg == NULL)
1096                 return 0;
1097         if ((msg->cm_magic) != CTDLMESSAGE_MAGIC) {
1098                 CtdlLogPrintf(CTDL_WARNING, "is_valid_message() -- self-check failed\n");
1099                 return 0;
1100         }
1101         return 1;
1102 }
1103
1104
1105 /*
1106  * 'Destructor' for struct CtdlMessage
1107  */
1108 void CtdlFreeMessage(struct CtdlMessage *msg)
1109 {
1110         int i;
1111
1112         if (is_valid_message(msg) == 0)
1113         {
1114                 if (msg != NULL) free (msg);
1115                 return;
1116         }
1117
1118         for (i = 0; i < 256; ++i)
1119                 if (msg->cm_fields[i] != NULL) {
1120                         free(msg->cm_fields[i]);
1121                 }
1122
1123         msg->cm_magic = 0;      /* just in case */
1124         free(msg);
1125 }
1126
1127
1128 /*
1129  * Pre callback function for multipart/alternative
1130  *
1131  * NOTE: this differs from the standard behavior for a reason.  Normally when
1132  *       displaying multipart/alternative you want to show the _last_ usable
1133  *       format in the message.  Here we show the _first_ one, because it's
1134  *       usually text/plain.  Since this set of functions is designed for text
1135  *       output to non-MIME-aware clients, this is the desired behavior.
1136  *
1137  */
1138 void fixed_output_pre(char *name, char *filename, char *partnum, char *disp,
1139                 void *content, char *cbtype, char *cbcharset, size_t length, char *encoding,
1140                 void *cbuserdata)
1141 {
1142         struct ma_info *ma;
1143
1144         ma = (struct ma_info *)cbuserdata;
1145         CtdlLogPrintf(CTDL_DEBUG, "fixed_output_pre() type=<%s>\n", cbtype);
1146         if (!strcasecmp(cbtype, "multipart/alternative")) {
1147                 ++ma->is_ma;
1148                 ma->did_print = 0;
1149         }
1150         if (!strcasecmp(cbtype, "message/rfc822")) {
1151                 ++ma->freeze;
1152         }
1153 }
1154
1155 /*
1156  * Post callback function for multipart/alternative
1157  */
1158 void fixed_output_post(char *name, char *filename, char *partnum, char *disp,
1159                 void *content, char *cbtype, char *cbcharset, size_t length,
1160                 char *encoding, void *cbuserdata)
1161 {
1162         struct ma_info *ma;
1163
1164         ma = (struct ma_info *)cbuserdata;
1165         CtdlLogPrintf(CTDL_DEBUG, "fixed_output_post() type=<%s>\n", cbtype);
1166         if (!strcasecmp(cbtype, "multipart/alternative")) {
1167                 --ma->is_ma;
1168                 ma->did_print = 0;
1169         }
1170         if (!strcasecmp(cbtype, "message/rfc822")) {
1171                 --ma->freeze;
1172         }
1173 }
1174
1175 /*
1176  * Inline callback function for mime parser that wants to display text
1177  */
1178 void fixed_output(char *name, char *filename, char *partnum, char *disp,
1179                 void *content, char *cbtype, char *cbcharset, size_t length,
1180                 char *encoding, void *cbuserdata)
1181 {
1182         char *ptr;
1183         char *wptr;
1184         size_t wlen;
1185         struct ma_info *ma;
1186
1187         ma = (struct ma_info *)cbuserdata;
1188
1189         CtdlLogPrintf(CTDL_DEBUG,
1190                 "fixed_output() part %s: %s (%s) (%ld bytes)\n",
1191                 partnum, filename, cbtype, (long)length);
1192
1193         /*
1194          * If we're in the middle of a multipart/alternative scope and
1195          * we've already printed another section, skip this one.
1196          */
1197         if ( (ma->is_ma) && (ma->did_print) ) {
1198                 CtdlLogPrintf(CTDL_DEBUG, "Skipping part %s (%s)\n", partnum, cbtype);
1199                 return;
1200         }
1201         ma->did_print = 1;
1202
1203         if ( (!strcasecmp(cbtype, "text/plain"))
1204            || (IsEmptyStr(cbtype)) ) {
1205                 wptr = content;
1206                 if (length > 0) {
1207                         client_write(wptr, length);
1208                         if (wptr[length-1] != '\n') {
1209                                 cprintf("\n");
1210                         }
1211                 }
1212                 return;
1213         }
1214
1215         if (!strcasecmp(cbtype, "text/html")) {
1216                 ptr = html_to_ascii(content, length, 80, 0);
1217                 wlen = strlen(ptr);
1218                 client_write(ptr, wlen);
1219                 if (ptr[wlen-1] != '\n') {
1220                         cprintf("\n");
1221                 }
1222                 free(ptr);
1223                 return;
1224         }
1225
1226         if (ma->use_fo_hooks) {
1227                 if (PerformFixedOutputHooks(cbtype, content, length)) {
1228                 /* above function returns nonzero if it handled the part */
1229                         return;
1230                 }
1231         }
1232
1233         if (strncasecmp(cbtype, "multipart/", 10)) {
1234                 cprintf("Part %s: %s (%s) (%ld bytes)\r\n",
1235                         partnum, filename, cbtype, (long)length);
1236                 return;
1237         }
1238 }
1239
1240 /*
1241  * The client is elegant and sophisticated and wants to be choosy about
1242  * MIME content types, so figure out which multipart/alternative part
1243  * we're going to send.
1244  *
1245  * We use a system of weights.  When we find a part that matches one of the
1246  * MIME types we've declared as preferential, we can store it in ma->chosen_part
1247  * and then set ma->chosen_pref to that MIME type's position in our preference
1248  * list.  If we then hit another match, we only replace the first match if
1249  * the preference value is lower.
1250  */
1251 void choose_preferred(char *name, char *filename, char *partnum, char *disp,
1252                 void *content, char *cbtype, char *cbcharset, size_t length,
1253                 char *encoding, void *cbuserdata)
1254 {
1255         char buf[1024];
1256         int i;
1257         struct ma_info *ma;
1258
1259         ma = (struct ma_info *)cbuserdata;
1260
1261         // NOTE: REMOVING THIS CONDITIONAL FIXES BUG 220
1262         //       http://bugzilla.citadel.org/show_bug.cgi?id=220
1263         // I don't know if there are any side effects!  Please TEST TEST TEST
1264         //if (ma->is_ma > 0) {
1265
1266         for (i=0; i<num_tokens(CC->preferred_formats, '|'); ++i) {
1267                 extract_token(buf, CC->preferred_formats, i, '|', sizeof buf);
1268                 if ( (!strcasecmp(buf, cbtype)) && (!ma->freeze) ) {
1269                         if (i < ma->chosen_pref) {
1270                                 CtdlLogPrintf(CTDL_DEBUG, "Setting chosen part: <%s>\n", partnum);
1271                                 safestrncpy(ma->chosen_part, partnum, sizeof ma->chosen_part);
1272                                 ma->chosen_pref = i;
1273                         }
1274                 }
1275         }
1276 }
1277
1278 /*
1279  * Now that we've chosen our preferred part, output it.
1280  */
1281 void output_preferred(char *name, char *filename, char *partnum, char *disp,
1282                 void *content, char *cbtype, char *cbcharset, size_t length,
1283                 char *encoding, void *cbuserdata)
1284 {
1285         int i;
1286         char buf[128];
1287         int add_newline = 0;
1288         char *text_content;
1289         struct ma_info *ma;
1290
1291         ma = (struct ma_info *)cbuserdata;
1292
1293         /* This is not the MIME part you're looking for... */
1294         if (strcasecmp(partnum, ma->chosen_part)) return;
1295
1296         /* If the content-type of this part is in our preferred formats
1297          * list, we can simply output it verbatim.
1298          */
1299         for (i=0; i<num_tokens(CC->preferred_formats, '|'); ++i) {
1300                 extract_token(buf, CC->preferred_formats, i, '|', sizeof buf);
1301                 if (!strcasecmp(buf, cbtype)) {
1302                         /* Yeah!  Go!  W00t!! */
1303
1304                         text_content = (char *)content;
1305                         if (text_content[length-1] != '\n') {
1306                                 ++add_newline;
1307                         }
1308                         cprintf("Content-type: %s", cbtype);
1309                         if (!IsEmptyStr(cbcharset)) {
1310                                 cprintf("; charset=%s", cbcharset);
1311                         }
1312                         cprintf("\nContent-length: %d\n",
1313                                 (int)(length + add_newline) );
1314                         if (!IsEmptyStr(encoding)) {
1315                                 cprintf("Content-transfer-encoding: %s\n", encoding);
1316                         }
1317                         else {
1318                                 cprintf("Content-transfer-encoding: 7bit\n");
1319                         }
1320                         cprintf("X-Citadel-MSG4-Partnum: %s\n", partnum);
1321                         cprintf("\n");
1322                         client_write(content, length);
1323                         if (add_newline) cprintf("\n");
1324                         return;
1325                 }
1326         }
1327
1328         /* No translations required or possible: output as text/plain */
1329         cprintf("Content-type: text/plain\n\n");
1330         fixed_output(name, filename, partnum, disp, content, cbtype, cbcharset,
1331                         length, encoding, cbuserdata);
1332 }
1333
1334
1335 struct encapmsg {
1336         char desired_section[64];
1337         char *msg;
1338         size_t msglen;
1339 };
1340
1341
1342 /*
1343  * Callback function for
1344  */
1345 void extract_encapsulated_message(char *name, char *filename, char *partnum, char *disp,
1346                    void *content, char *cbtype, char *cbcharset, size_t length,
1347                    char *encoding, void *cbuserdata)
1348 {
1349         struct encapmsg *encap;
1350
1351         encap = (struct encapmsg *)cbuserdata;
1352
1353         /* Only proceed if this is the desired section... */
1354         if (!strcasecmp(encap->desired_section, partnum)) {
1355                 encap->msglen = length;
1356                 encap->msg = malloc(length + 2);
1357                 memcpy(encap->msg, content, length);
1358                 return;
1359         }
1360
1361 }
1362
1363
1364
1365
1366 /*
1367  * Get a message off disk.  (returns om_* values found in msgbase.h)
1368  *
1369  */
1370 int CtdlOutputMsg(long msg_num,         /* message number (local) to fetch */
1371                 int mode,               /* how would you like that message? */
1372                 int headers_only,       /* eschew the message body? */
1373                 int do_proto,           /* do Citadel protocol responses? */
1374                 int crlf,               /* Use CRLF newlines instead of LF? */
1375                 char *section           /* NULL or a message/rfc822 section */
1376 ) {
1377         struct CtdlMessage *TheMessage = NULL;
1378         int retcode = om_no_such_msg;
1379         struct encapmsg encap;
1380
1381         CtdlLogPrintf(CTDL_DEBUG, "CtdlOutputMsg() msgnum=%ld, mode=%d, section=%s\n",
1382                 msg_num, mode,
1383                 (section ? section : "<>")
1384         );
1385
1386         if ((!(CC->logged_in)) && (!(CC->internal_pgm))) {
1387                 if (do_proto) cprintf("%d Not logged in.\n",
1388                         ERROR + NOT_LOGGED_IN);
1389                 return(om_not_logged_in);
1390         }
1391
1392         /* FIXME: check message id against msglist for this room */
1393
1394         /*
1395          * Fetch the message from disk.  If we're in any sort of headers
1396          * only mode, request that we don't even bother loading the body
1397          * into memory.
1398          */
1399         if ( (headers_only == HEADERS_FAST) || (headers_only == HEADERS_ONLY) ) {
1400                 TheMessage = CtdlFetchMessage(msg_num, 0);
1401         }
1402         else {
1403                 TheMessage = CtdlFetchMessage(msg_num, 1);
1404         }
1405
1406         if (TheMessage == NULL) {
1407                 if (do_proto) cprintf("%d Can't locate msg %ld on disk\n",
1408                         ERROR + MESSAGE_NOT_FOUND, msg_num);
1409                 return(om_no_such_msg);
1410         }
1411
1412         /* Here is the weird form of this command, to process only an
1413          * encapsulated message/rfc822 section.
1414          */
1415         if (section) if (!IsEmptyStr(section)) if (strcmp(section, "0")) {
1416                 memset(&encap, 0, sizeof encap);
1417                 safestrncpy(encap.desired_section, section, sizeof encap.desired_section);
1418                 mime_parser(TheMessage->cm_fields['M'],
1419                         NULL,
1420                         *extract_encapsulated_message,
1421                         NULL, NULL, (void *)&encap, 0
1422                 );
1423                 CtdlFreeMessage(TheMessage);
1424                 TheMessage = NULL;
1425
1426                 if (encap.msg) {
1427                         encap.msg[encap.msglen] = 0;
1428                         TheMessage = convert_internet_message(encap.msg);
1429                         encap.msg = NULL;       /* no free() here, TheMessage owns it now */
1430
1431                         /* Now we let it fall through to the bottom of this
1432                          * function, because TheMessage now contains the
1433                          * encapsulated message instead of the top-level
1434                          * message.  Isn't that neat?
1435                          */
1436
1437                 }
1438                 else {
1439                         if (do_proto) cprintf("%d msg %ld has no part %s\n",
1440                                 ERROR + MESSAGE_NOT_FOUND, msg_num, section);
1441                         retcode = om_no_such_msg;
1442                 }
1443
1444         }
1445
1446         /* Ok, output the message now */
1447         retcode = CtdlOutputPreLoadedMsg(TheMessage, mode, headers_only, do_proto, crlf);
1448         CtdlFreeMessage(TheMessage);
1449
1450         return(retcode);
1451 }
1452
1453 char *qp_encode_email_addrs(char *source)
1454 {
1455         char user[256], node[256], name[256];
1456         const char headerStr[] = "=?UTF-8?Q?";
1457         char *Encoded;
1458         char *EncodedName;
1459         char *nPtr;
1460         int need_to_encode = 0;
1461         long SourceLen;
1462         long EncodedMaxLen;
1463         long nColons = 0;
1464         long *AddrPtr;
1465         long nAddrPtrMax = 50;
1466         long nmax;
1467         int InQuotes = 0;
1468         int i, n;
1469
1470
1471         if (source == NULL)
1472                 return source;
1473
1474         AddrPtr = malloc (sizeof (long) * nAddrPtrMax);
1475         *AddrPtr = 0;
1476
1477         while (!IsEmptyStr (&source[i])) {
1478                 if (((unsigned char) source[i] < 32) ||
1479                     ((unsigned char) source[i] > 126)) {
1480                         need_to_encode = 1;
1481                 }
1482                 if (source[i] == '"')
1483                         InQuotes = !InQuotes;
1484                 if (!InQuotes && source[i] == ',') {
1485                         nColons++;
1486                         if (nColons > nAddrPtrMax){
1487                                 /// TODO realloc!
1488                         }
1489                         AddrPtr[nColons] = i;
1490                 }
1491                 i++;
1492         }
1493         if (need_to_encode == 0) {
1494                 free (AddrPtr);
1495                 return source;
1496         }
1497
1498         SourceLen = i;
1499         EncodedMaxLen = nColons * (sizeof(headerStr) + 3) + SourceLen * 3;
1500         Encoded = (char*) malloc (EncodedMaxLen);
1501
1502         for (i = 1; i <= nColons; i++)
1503                 source[AddrPtr[i]++] = '\0';
1504
1505         nPtr = Encoded;
1506         *nPtr = '\0';
1507         for (i = 0; i <= nColons && nPtr != NULL; i++) {
1508                 process_rfc822_addr(&source[AddrPtr[i]],
1509                                     user,
1510                                     node,
1511                                     name);
1512                 nmax = EncodedMaxLen - (nPtr - Encoded);
1513
1514                 if (IsEmptyStr(name)) {
1515                         n = snprintf(nPtr, nmax,
1516                                      (i==0)?"%s@%s" : ",%s@%s",
1517                                      user, node);
1518                 }
1519                 else {
1520                         EncodedName = rfc2047encode(name, strlen(name));
1521                         n = snprintf(nPtr, nmax,
1522                                      (i==0)?"%s <%s@%s>" : ",%s <%s@%s>",
1523                                      EncodedName, user, node);
1524                         free(EncodedName);
1525                 }
1526                 if (n > 0 )
1527                         nPtr += n;
1528                 else
1529                         nPtr = NULL;/// TODO: should we implement realloc?
1530         }
1531
1532         for (i = 1; i <= nColons; i++)
1533                 source[--AddrPtr[i]] = ',';
1534         return Encoded;
1535 }
1536
1537 /*
1538  * Get a message off disk.  (returns om_* values found in msgbase.h)
1539  */
1540 int CtdlOutputPreLoadedMsg(
1541                 struct CtdlMessage *TheMessage,
1542                 int mode,               /* how would you like that message? */
1543                 int headers_only,       /* eschew the message body? */
1544                 int do_proto,           /* do Citadel protocol responses? */
1545                 int crlf                /* Use CRLF newlines instead of LF? */
1546 ) {
1547         int i, j, k;
1548         char buf[SIZ];
1549         cit_uint8_t ch;
1550         char allkeys[30];
1551         char display_name[256];
1552         char *mptr, *mpptr;
1553         char *nl;       /* newline string */
1554         int suppress_f = 0;
1555         int subject_found = 0;
1556         struct ma_info ma;
1557
1558         /* Buffers needed for RFC822 translation.  These are all filled
1559          * using functions that are bounds-checked, and therefore we can
1560          * make them substantially smaller than SIZ.
1561          */
1562         char suser[100];
1563         char luser[100];
1564         char fuser[100];
1565         char snode[100];
1566         char lnode[100];
1567         char mid[100];
1568         char datestamp[100];
1569
1570         CtdlLogPrintf(CTDL_DEBUG, "CtdlOutputPreLoadedMsg(TheMessage=%s, %d, %d, %d, %d\n",
1571                 ((TheMessage == NULL) ? "NULL" : "not null"),
1572                 mode, headers_only, do_proto, crlf);
1573
1574         strcpy(mid, "unknown");
1575         nl = (crlf ? "\r\n" : "\n");
1576
1577         if (!is_valid_message(TheMessage)) {
1578                 CtdlLogPrintf(CTDL_ERR,
1579                         "ERROR: invalid preloaded message for output\n");
1580                 return(om_no_such_msg);
1581         }
1582
1583         /* Are we downloading a MIME component? */
1584         if (mode == MT_DOWNLOAD) {
1585                 if (TheMessage->cm_format_type != FMT_RFC822) {
1586                         if (do_proto)
1587                                 cprintf("%d This is not a MIME message.\n",
1588                                 ERROR + ILLEGAL_VALUE);
1589                 } else if (CC->download_fp != NULL) {
1590                         if (do_proto) cprintf(
1591                                 "%d You already have a download open.\n",
1592                                 ERROR + RESOURCE_BUSY);
1593                 } else {
1594                         /* Parse the message text component */
1595                         mptr = TheMessage->cm_fields['M'];
1596                         mime_parser(mptr, NULL, *mime_download, NULL, NULL, NULL, 0);
1597                         /* If there's no file open by this time, the requested
1598                          * section wasn't found, so print an error
1599                          */
1600                         if (CC->download_fp == NULL) {
1601                                 if (do_proto) cprintf(
1602                                         "%d Section %s not found.\n",
1603                                         ERROR + FILE_NOT_FOUND,
1604                                         CC->download_desired_section);
1605                         }
1606                 }
1607                 return((CC->download_fp != NULL) ? om_ok : om_mime_error);
1608         }
1609
1610         /* MT_SPEW_SECTION is like MT_DOWNLOAD except it outputs the whole MIME part
1611          * in a single server operation instead of opening a download file.
1612          */
1613         if (mode == MT_SPEW_SECTION) {
1614                 if (TheMessage->cm_format_type != FMT_RFC822) {
1615                         if (do_proto)
1616                                 cprintf("%d This is not a MIME message.\n",
1617                                 ERROR + ILLEGAL_VALUE);
1618                 } else {
1619                         /* Parse the message text component */
1620                         int found_it = 0;
1621
1622                         mptr = TheMessage->cm_fields['M'];
1623                         mime_parser(mptr, NULL, *mime_spew_section, NULL, NULL, (void *)&found_it, 0);
1624                         /* If section wasn't found, print an error
1625                          */
1626                         if (!found_it) {
1627                                 if (do_proto) cprintf(
1628                                         "%d Section %s not found.\n",
1629                                         ERROR + FILE_NOT_FOUND,
1630                                         CC->download_desired_section);
1631                         }
1632                 }
1633                 return((CC->download_fp != NULL) ? om_ok : om_mime_error);
1634         }
1635
1636         /* now for the user-mode message reading loops */
1637         if (do_proto) cprintf("%d msg:\n", LISTING_FOLLOWS);
1638
1639         /* Does the caller want to skip the headers? */
1640         if (headers_only == HEADERS_NONE) goto START_TEXT;
1641
1642         /* Tell the client which format type we're using. */
1643         if ( (mode == MT_CITADEL) && (do_proto) ) {
1644                 cprintf("type=%d\n", TheMessage->cm_format_type);
1645         }
1646
1647         /* nhdr=yes means that we're only displaying headers, no body */
1648         if ( (TheMessage->cm_anon_type == MES_ANONONLY)
1649            && (mode == MT_CITADEL)
1650            && (do_proto)
1651            ) {
1652                 cprintf("nhdr=yes\n");
1653         }
1654
1655         /* begin header processing loop for Citadel message format */
1656
1657         if ((mode == MT_CITADEL) || (mode == MT_MIME)) {
1658
1659                 safestrncpy(display_name, "<unknown>", sizeof display_name);
1660                 if (TheMessage->cm_fields['A']) {
1661                         strcpy(buf, TheMessage->cm_fields['A']);
1662                         if (TheMessage->cm_anon_type == MES_ANONONLY) {
1663                                 safestrncpy(display_name, "****", sizeof display_name);
1664                         }
1665                         else if (TheMessage->cm_anon_type == MES_ANONOPT) {
1666                                 safestrncpy(display_name, "anonymous", sizeof display_name);
1667                         }
1668                         else {
1669                                 safestrncpy(display_name, buf, sizeof display_name);
1670                         }
1671                         if ((is_room_aide())
1672                             && ((TheMessage->cm_anon_type == MES_ANONONLY)
1673                              || (TheMessage->cm_anon_type == MES_ANONOPT))) {
1674                                 size_t tmp = strlen(display_name);
1675                                 snprintf(&display_name[tmp],
1676                                          sizeof display_name - tmp,
1677                                          " [%s]", buf);
1678                         }
1679                 }
1680
1681                 /* Don't show Internet address for users on the
1682                  * local Citadel network.
1683                  */
1684                 suppress_f = 0;
1685                 if (TheMessage->cm_fields['N'] != NULL)
1686                    if (!IsEmptyStr(TheMessage->cm_fields['N']))
1687                       if (haschar(TheMessage->cm_fields['N'], '.') == 0) {
1688                         suppress_f = 1;
1689                 }
1690
1691                 /* Now spew the header fields in the order we like them. */
1692                 safestrncpy(allkeys, FORDER, sizeof allkeys);
1693                 for (i=0; i<strlen(allkeys); ++i) {
1694                         k = (int) allkeys[i];
1695                         if (k != 'M') {
1696                                 if ( (TheMessage->cm_fields[k] != NULL)
1697                                    && (msgkeys[k] != NULL) ) {
1698                                         if (k == 'A') {
1699                                                 if (do_proto) cprintf("%s=%s\n",
1700                                                         msgkeys[k],
1701                                                         display_name);
1702                                         }
1703                                         else if ((k == 'F') && (suppress_f)) {
1704                                                 /* do nothing */
1705                                         }
1706                                         /* Masquerade display name if needed */
1707                                         else {
1708                                                 if (do_proto) cprintf("%s=%s\n",
1709                                                         msgkeys[k],
1710                                                         TheMessage->cm_fields[k]
1711                                         );
1712                                         }
1713                                 }
1714                         }
1715                 }
1716
1717         }
1718
1719         /* begin header processing loop for RFC822 transfer format */
1720
1721         strcpy(suser, "");
1722         strcpy(luser, "");
1723         strcpy(fuser, "");
1724         strcpy(snode, NODENAME);
1725         strcpy(lnode, HUMANNODE);
1726         if (mode == MT_RFC822) {
1727                 for (i = 0; i < 256; ++i) {
1728                         if (TheMessage->cm_fields[i]) {
1729                                 mptr = mpptr = TheMessage->cm_fields[i];
1730
1731                                 if (i == 'A') {
1732                                         safestrncpy(luser, mptr, sizeof luser);
1733                                         safestrncpy(suser, mptr, sizeof suser);
1734                                 }
1735                                 else if (i == 'Y') {
1736                                         mptr = qp_encode_email_addrs(mptr);
1737                                         cprintf("CC: %s%s", mptr, nl);
1738                                 }
1739                                 else if (i == 'P') {
1740                                         cprintf("Return-Path: %s%s", mptr, nl);
1741                                 }
1742                                 else if (i == 'V') {
1743                                         mptr = qp_encode_email_addrs(mptr);
1744                                         cprintf("Envelope-To: %s%s", mptr, nl);
1745                                 }
1746                                 else if (i == 'U') {
1747                                         cprintf("Subject: %s%s", mptr, nl);
1748                                         subject_found = 1;
1749                                 }
1750                                 else if (i == 'I')
1751                                         safestrncpy(mid, mptr, sizeof mid);
1752                                 else if (i == 'H')
1753                                         safestrncpy(lnode, mptr, sizeof lnode);
1754                                 else if (i == 'F')
1755                                         safestrncpy(fuser, mptr, sizeof fuser);
1756                                 /* else if (i == 'O')
1757                                         cprintf("X-Citadel-Room: %s%s",
1758                                                 mptr, nl); */
1759                                 else if (i == 'N')
1760                                         safestrncpy(snode, mptr, sizeof snode);
1761                                 else if (i == 'R')
1762                                 {
1763                                         if (haschar(mptr, '@') == 0)
1764                                         {
1765                                                 cprintf("To: %s@%s%s", mptr, config.c_fqdn, nl);
1766                                         }
1767                                         else
1768                                         {
1769                                                 mptr = qp_encode_email_addrs(mptr);
1770                                                 cprintf("To: %s%s", mptr, nl);
1771                                         }
1772                                 }
1773                                 else if (i == 'T') {
1774                                         datestring(datestamp, sizeof datestamp,
1775                                                 atol(mptr), DATESTRING_RFC822);
1776                                         cprintf("Date: %s%s", datestamp, nl);
1777                                 }
1778                                 else if (i == 'W') {
1779                                         cprintf("References: ");
1780                                         k = num_tokens(mptr, '|');
1781                                         for (j=0; j<k; ++j) {
1782                                                 extract_token(buf, mptr, j, '|', sizeof buf);
1783                                                 cprintf("<%s>", buf);
1784                                                 if (j == (k-1)) {
1785                                                         cprintf("%s", nl);
1786                                                 }
1787                                                 else {
1788                                                         cprintf(" ");
1789                                                 }
1790                                         }
1791                                 }
1792                                 if (mptr != mpptr)
1793                                         free (mptr);
1794                         }
1795                 }
1796                 if (subject_found == 0) {
1797                         cprintf("Subject: (no subject)%s", nl);
1798                 }
1799         }
1800
1801         for (i=0; !IsEmptyStr(&suser[i]); ++i) {
1802                 suser[i] = tolower(suser[i]);
1803                 if (!isalnum(suser[i])) suser[i]='_';
1804         }
1805
1806         if (mode == MT_RFC822) {
1807                 if (!strcasecmp(snode, NODENAME)) {
1808                         safestrncpy(snode, FQDN, sizeof snode);
1809                 }
1810
1811                 /* Construct a fun message id */
1812                 cprintf("Message-ID: <%s", mid);/// todo: this possibly breaks threadding mails.
1813                 if (strchr(mid, '@')==NULL) {
1814                         cprintf("@%s", snode);
1815                 }
1816                 cprintf(">%s", nl);
1817
1818                 if (!is_room_aide() && (TheMessage->cm_anon_type == MES_ANONONLY)) {
1819                         cprintf("From: \"----\" <x@x.org>%s", nl);
1820                 }
1821                 else if (!is_room_aide() && (TheMessage->cm_anon_type == MES_ANONOPT)) {
1822                         cprintf("From: \"anonymous\" <x@x.org>%s", nl);
1823                 }
1824                 else if (!IsEmptyStr(fuser)) {
1825                         cprintf("From: \"%s\" <%s>%s", luser, fuser, nl);
1826                 }
1827                 else {
1828                         cprintf("From: \"%s\" <%s@%s>%s", luser, suser, snode, nl);
1829                 }
1830
1831                 cprintf("Organization: %s%s", lnode, nl);
1832
1833                 /* Blank line signifying RFC822 end-of-headers */
1834                 if (TheMessage->cm_format_type != FMT_RFC822) {
1835                         cprintf("%s", nl);
1836                 }
1837         }
1838
1839         /* end header processing loop ... at this point, we're in the text */
1840 START_TEXT:
1841         if (headers_only == HEADERS_FAST) goto DONE;
1842         mptr = TheMessage->cm_fields['M'];
1843
1844         /* Tell the client about the MIME parts in this message */
1845         if (TheMessage->cm_format_type == FMT_RFC822) {
1846                 if ( (mode == MT_CITADEL) || (mode == MT_MIME) ) {
1847                         memset(&ma, 0, sizeof(struct ma_info));
1848                         mime_parser(mptr, NULL,
1849                                 (do_proto ? *list_this_part : NULL),
1850                                 (do_proto ? *list_this_pref : NULL),
1851                                 (do_proto ? *list_this_suff : NULL),
1852                                 (void *)&ma, 0);
1853                 }
1854                 else if (mode == MT_RFC822) {   /* unparsed RFC822 dump */
1855                         char *start_of_text = NULL;
1856                         start_of_text = strstr(mptr, "\n\r\n");
1857                         if (start_of_text == NULL) start_of_text = strstr(mptr, "\n\n");
1858                         if (start_of_text == NULL) start_of_text = mptr;
1859                         ++start_of_text;
1860                         start_of_text = strstr(start_of_text, "\n");
1861                         ++start_of_text;
1862
1863                         char outbuf[1024];
1864                         int outlen = 0;
1865                         int nllen = strlen(nl);
1866                         while (ch=*mptr, ch!=0) {
1867                                 if (ch==13) {
1868                                         /* do nothing */
1869                                 }
1870                                 else {
1871                                         if (
1872                                                 ((headers_only == HEADERS_NONE) && (mptr >= start_of_text))
1873                                            ||   ((headers_only == HEADERS_ONLY) && (mptr < start_of_text))
1874                                            ||   ((headers_only != HEADERS_NONE) && (headers_only != HEADERS_ONLY))
1875                                         ) {
1876                                                 if (ch == 10) {
1877                                                         sprintf(&outbuf[outlen], "%s", nl);
1878                                                         outlen += nllen;
1879                                                 }
1880                                                 else {
1881                                                         outbuf[outlen++] = ch;
1882                                                 }
1883                                         }
1884                                 }
1885                                 ++mptr;
1886                                 if (outlen > 1000) {
1887                                         client_write(outbuf, outlen);
1888                                         outlen = 0;
1889                                 }
1890                         }
1891                         if (outlen > 0) {
1892                                 client_write(outbuf, outlen);
1893                                 outlen = 0;
1894                         }
1895
1896                         goto DONE;
1897                 }
1898         }
1899
1900         if (headers_only == HEADERS_ONLY) {
1901                 goto DONE;
1902         }
1903
1904         /* signify start of msg text */
1905         if ( (mode == MT_CITADEL) || (mode == MT_MIME) ) {
1906                 if (do_proto) cprintf("text\n");
1907         }
1908
1909         /* If the format type on disk is 1 (fixed-format), then we want
1910          * everything to be output completely literally ... regardless of
1911          * what message transfer format is in use.
1912          */
1913         if (TheMessage->cm_format_type == FMT_FIXED) {
1914                 int buflen;
1915                 if (mode == MT_MIME) {
1916                         cprintf("Content-type: text/plain\n\n");
1917                 }
1918                 *buf = '\0';
1919                 buflen = 0;
1920                 while (ch = *mptr++, ch > 0) {
1921                         if (ch == 13)
1922                                 ch = 10;
1923                         if ((ch == 10) || (buflen > 250)) {
1924                                 buf[buflen] = '\0';
1925                                 cprintf("%s%s", buf, nl);
1926                                 *buf = '\0';
1927                                 buflen = 0;
1928                         } else {
1929                                 buf[buflen] = ch;
1930                                 buflen++;
1931                         }
1932                 }
1933                 buf[buflen] = '\0';
1934                 if (!IsEmptyStr(buf))
1935                         cprintf("%s%s", buf, nl);
1936         }
1937
1938         /* If the message on disk is format 0 (Citadel vari-format), we
1939          * output using the formatter at 80 columns.  This is the final output
1940          * form if the transfer format is RFC822, but if the transfer format
1941          * is Citadel proprietary, it'll still work, because the indentation
1942          * for new paragraphs is correct and the client will reformat the
1943          * message to the reader's screen width.
1944          */
1945         if (TheMessage->cm_format_type == FMT_CITADEL) {
1946                 if (mode == MT_MIME) {
1947                         cprintf("Content-type: text/x-citadel-variformat\n\n");
1948                 }
1949                 memfmout(mptr, 0, nl);
1950         }
1951
1952         /* If the message on disk is format 4 (MIME), we've gotta hand it
1953          * off to the MIME parser.  The client has already been told that
1954          * this message is format 1 (fixed format), so the callback function
1955          * we use will display those parts as-is.
1956          */
1957         if (TheMessage->cm_format_type == FMT_RFC822) {
1958                 memset(&ma, 0, sizeof(struct ma_info));
1959
1960                 if (mode == MT_MIME) {
1961                         ma.use_fo_hooks = 0;
1962                         strcpy(ma.chosen_part, "1");
1963                         ma.chosen_pref = 9999;
1964                         mime_parser(mptr, NULL,
1965                                 *choose_preferred, *fixed_output_pre,
1966                                 *fixed_output_post, (void *)&ma, 0);
1967                         mime_parser(mptr, NULL,
1968                                 *output_preferred, NULL, NULL, (void *)&ma, CC->msg4_dont_decode);
1969                 }
1970                 else {
1971                         ma.use_fo_hooks = 1;
1972                         mime_parser(mptr, NULL,
1973                                 *fixed_output, *fixed_output_pre,
1974                                 *fixed_output_post, (void *)&ma, 0);
1975                 }
1976
1977         }
1978
1979 DONE:   /* now we're done */
1980         if (do_proto) cprintf("000\n");
1981         return(om_ok);
1982 }
1983
1984
1985
1986 /*
1987  * display a message (mode 0 - Citadel proprietary)
1988  */
1989 void cmd_msg0(char *cmdbuf)
1990 {
1991         long msgid;
1992         int headers_only = HEADERS_ALL;
1993
1994         msgid = extract_long(cmdbuf, 0);
1995         headers_only = extract_int(cmdbuf, 1);
1996
1997         CtdlOutputMsg(msgid, MT_CITADEL, headers_only, 1, 0, NULL);
1998         return;
1999 }
2000
2001
2002 /*
2003  * display a message (mode 2 - RFC822)
2004  */
2005 void cmd_msg2(char *cmdbuf)
2006 {
2007         long msgid;
2008         int headers_only = HEADERS_ALL;
2009
2010         msgid = extract_long(cmdbuf, 0);
2011         headers_only = extract_int(cmdbuf, 1);
2012
2013         CtdlOutputMsg(msgid, MT_RFC822, headers_only, 1, 1, NULL);
2014 }
2015
2016
2017
2018 /*
2019  * display a message (mode 3 - IGnet raw format - internal programs only)
2020  */
2021 void cmd_msg3(char *cmdbuf)
2022 {
2023         long msgnum;
2024         struct CtdlMessage *msg = NULL;
2025         struct ser_ret smr;
2026
2027         if (CC->internal_pgm == 0) {
2028                 cprintf("%d This command is for internal programs only.\n",
2029                         ERROR + HIGHER_ACCESS_REQUIRED);
2030                 return;
2031         }
2032
2033         msgnum = extract_long(cmdbuf, 0);
2034         msg = CtdlFetchMessage(msgnum, 1);
2035         if (msg == NULL) {
2036                 cprintf("%d Message %ld not found.\n",
2037                         ERROR + MESSAGE_NOT_FOUND, msgnum);
2038                 return;
2039         }
2040
2041         serialize_message(&smr, msg);
2042         CtdlFreeMessage(msg);
2043
2044         if (smr.len == 0) {
2045                 cprintf("%d Unable to serialize message\n",
2046                         ERROR + INTERNAL_ERROR);
2047                 return;
2048         }
2049
2050         cprintf("%d %ld\n", BINARY_FOLLOWS, (long)smr.len);
2051         client_write((char *)smr.ser, (int)smr.len);
2052         free(smr.ser);
2053 }
2054
2055
2056
2057 /*
2058  * Display a message using MIME content types
2059  */
2060 void cmd_msg4(char *cmdbuf)
2061 {
2062         long msgid;
2063         char section[64];
2064
2065         msgid = extract_long(cmdbuf, 0);
2066         extract_token(section, cmdbuf, 1, '|', sizeof section);
2067         CtdlOutputMsg(msgid, MT_MIME, 0, 1, 0, (section[0] ? section : NULL) );
2068 }
2069
2070
2071
2072 /*
2073  * Client tells us its preferred message format(s)
2074  */
2075 void cmd_msgp(char *cmdbuf)
2076 {
2077         if (!strcasecmp(cmdbuf, "dont_decode")) {
2078                 CC->msg4_dont_decode = 1;
2079                 cprintf("%d MSG4 will not pre-decode messages.\n", CIT_OK);
2080         }
2081         else {
2082                 safestrncpy(CC->preferred_formats, cmdbuf, sizeof(CC->preferred_formats));
2083                 cprintf("%d Preferred MIME formats have been set.\n", CIT_OK);
2084         }
2085 }
2086
2087
2088 /*
2089  * Open a component of a MIME message as a download file
2090  */
2091 void cmd_opna(char *cmdbuf)
2092 {
2093         long msgid;
2094         char desired_section[128];
2095
2096         msgid = extract_long(cmdbuf, 0);
2097         extract_token(desired_section, cmdbuf, 1, '|', sizeof desired_section);
2098         safestrncpy(CC->download_desired_section, desired_section,
2099                 sizeof CC->download_desired_section);
2100         CtdlOutputMsg(msgid, MT_DOWNLOAD, 0, 1, 1, NULL);
2101 }
2102
2103
2104 /*
2105  * Open a component of a MIME message and transmit it all at once
2106  */
2107 void cmd_dlat(char *cmdbuf)
2108 {
2109         long msgid;
2110         char desired_section[128];
2111
2112         msgid = extract_long(cmdbuf, 0);
2113         extract_token(desired_section, cmdbuf, 1, '|', sizeof desired_section);
2114         safestrncpy(CC->download_desired_section, desired_section,
2115                 sizeof CC->download_desired_section);
2116         CtdlOutputMsg(msgid, MT_SPEW_SECTION, 0, 1, 1, NULL);
2117 }
2118
2119
2120 /*
2121  * Save one or more message pointers into a specified room
2122  * (Returns 0 for success, nonzero for failure)
2123  * roomname may be NULL to use the current room
2124  *
2125  * Note that the 'supplied_msg' field may be set to NULL, in which case
2126  * the message will be fetched from disk, by number, if we need to perform
2127  * replication checks.  This adds an additional database read, so if the
2128  * caller already has the message in memory then it should be supplied.  (Obviously
2129  * this mode of operation only works if we're saving a single message.)
2130  */
2131 int CtdlSaveMsgPointersInRoom(char *roomname, long newmsgidlist[], int num_newmsgs,
2132                                 int do_repl_check, struct CtdlMessage *supplied_msg)
2133 {
2134         int i, j, unique;
2135         char hold_rm[ROOMNAMELEN];
2136         struct cdbdata *cdbfr;
2137         int num_msgs;
2138         long *msglist;
2139         long highest_msg = 0L;
2140
2141         long msgid = 0;
2142         struct CtdlMessage *msg = NULL;
2143
2144         long *msgs_to_be_merged = NULL;
2145         int num_msgs_to_be_merged = 0;
2146
2147         CtdlLogPrintf(CTDL_DEBUG,
2148                 "CtdlSaveMsgPointersInRoom(room=%s, num_msgs=%d, repl=%d)\n",
2149                 roomname, num_newmsgs, do_repl_check);
2150
2151         strcpy(hold_rm, CC->room.QRname);
2152
2153         /* Sanity checks */
2154         if (newmsgidlist == NULL) return(ERROR + INTERNAL_ERROR);
2155         if (num_newmsgs < 1) return(ERROR + INTERNAL_ERROR);
2156         if (num_newmsgs > 1) supplied_msg = NULL;
2157
2158         /* Now the regular stuff */
2159         if (lgetroom(&CC->room,
2160            ((roomname != NULL) ? roomname : CC->room.QRname) )
2161            != 0) {
2162                 CtdlLogPrintf(CTDL_ERR, "No such room <%s>\n", roomname);
2163                 return(ERROR + ROOM_NOT_FOUND);
2164         }
2165
2166
2167         msgs_to_be_merged = malloc(sizeof(long) * num_newmsgs);
2168         num_msgs_to_be_merged = 0;
2169
2170
2171         cdbfr = cdb_fetch(CDB_MSGLISTS, &CC->room.QRnumber, sizeof(long));
2172         if (cdbfr == NULL) {
2173                 msglist = NULL;
2174                 num_msgs = 0;
2175         } else {
2176                 msglist = (long *) cdbfr->ptr;
2177                 cdbfr->ptr = NULL;      /* CtdlSaveMsgPointerInRoom() now owns this memory */
2178                 num_msgs = cdbfr->len / sizeof(long);
2179                 cdb_free(cdbfr);
2180         }
2181
2182
2183         /* Create a list of msgid's which were supplied by the caller, but do
2184          * not already exist in the target room.  It is absolutely taboo to
2185          * have more than one reference to the same message in a room.
2186          */
2187         for (i=0; i<num_newmsgs; ++i) {
2188                 unique = 1;
2189                 if (num_msgs > 0) for (j=0; j<num_msgs; ++j) {
2190                         if (msglist[j] == newmsgidlist[i]) {
2191                                 unique = 0;
2192                         }
2193                 }
2194                 if (unique) {
2195                         msgs_to_be_merged[num_msgs_to_be_merged++] = newmsgidlist[i];
2196                 }
2197         }
2198
2199         CtdlLogPrintf(9, "%d unique messages to be merged\n", num_msgs_to_be_merged);
2200
2201         /*
2202          * Now merge the new messages
2203          */
2204         msglist = realloc(msglist, (sizeof(long) * (num_msgs + num_msgs_to_be_merged)) );
2205         if (msglist == NULL) {
2206                 CtdlLogPrintf(CTDL_ALERT, "ERROR: can't realloc message list!\n");
2207         }
2208         memcpy(&msglist[num_msgs], msgs_to_be_merged, (sizeof(long) * num_msgs_to_be_merged) );
2209         num_msgs += num_msgs_to_be_merged;
2210
2211         /* Sort the message list, so all the msgid's are in order */
2212         num_msgs = sort_msglist(msglist, num_msgs);
2213
2214         /* Determine the highest message number */
2215         highest_msg = msglist[num_msgs - 1];
2216
2217         /* Write it back to disk. */
2218         cdb_store(CDB_MSGLISTS, &CC->room.QRnumber, (int)sizeof(long),
2219                   msglist, (int)(num_msgs * sizeof(long)));
2220
2221         /* Free up the memory we used. */
2222         free(msglist);
2223
2224         /* Update the highest-message pointer and unlock the room. */
2225         CC->room.QRhighest = highest_msg;
2226         lputroom(&CC->room);
2227
2228         /* Perform replication checks if necessary */
2229         if ( (DoesThisRoomNeedEuidIndexing(&CC->room)) && (do_repl_check) ) {
2230                 CtdlLogPrintf(CTDL_DEBUG, "CtdlSaveMsgPointerInRoom() doing repl checks\n");
2231
2232                 for (i=0; i<num_msgs_to_be_merged; ++i) {
2233                         msgid = msgs_to_be_merged[i];
2234
2235                         if (supplied_msg != NULL) {
2236                                 msg = supplied_msg;
2237                         }
2238                         else {
2239                                 msg = CtdlFetchMessage(msgid, 0);
2240                         }
2241
2242                         if (msg != NULL) {
2243                                 ReplicationChecks(msg);
2244
2245                                 /* If the message has an Exclusive ID, index that... */
2246                                 if (msg->cm_fields['E'] != NULL) {
2247                                         index_message_by_euid(msg->cm_fields['E'], &CC->room, msgid);
2248                                 }
2249
2250                                 /* Free up the memory we may have allocated */
2251                                 if (msg != supplied_msg) {
2252                                         CtdlFreeMessage(msg);
2253                                 }
2254                         }
2255
2256                 }
2257         }
2258
2259         else {
2260                 CtdlLogPrintf(CTDL_DEBUG, "CtdlSaveMsgPointerInRoom() skips repl checks\n");
2261         }
2262
2263         /* Submit this room for processing by hooks */
2264         PerformRoomHooks(&CC->room);
2265
2266         /* Go back to the room we were in before we wandered here... */
2267         getroom(&CC->room, hold_rm);
2268
2269         /* Bump the reference count for all messages which were merged */
2270         for (i=0; i<num_msgs_to_be_merged; ++i) {
2271                 AdjRefCount(msgs_to_be_merged[i], +1);
2272         }
2273
2274         /* Free up memory... */
2275         if (msgs_to_be_merged != NULL) {
2276                 free(msgs_to_be_merged);
2277         }
2278
2279         /* Return success. */
2280         return (0);
2281 }
2282
2283
2284 /*
2285  * This is the same as CtdlSaveMsgPointersInRoom() but it only accepts
2286  * a single message.
2287  */
2288 int CtdlSaveMsgPointerInRoom(char *roomname, long msgid,
2289                         int do_repl_check, struct CtdlMessage *supplied_msg)
2290 {
2291         return CtdlSaveMsgPointersInRoom(roomname, &msgid, 1, do_repl_check, supplied_msg);
2292 }
2293
2294
2295
2296
2297 /*
2298  * Message base operation to save a new message to the message store
2299  * (returns new message number)
2300  *
2301  * This is the back end for CtdlSubmitMsg() and should not be directly
2302  * called by server-side modules.
2303  *
2304  */
2305 long send_message(struct CtdlMessage *msg) {
2306         long newmsgid;
2307         long retval;
2308         char msgidbuf[256];
2309         struct ser_ret smr;
2310         int is_bigmsg = 0;
2311         char *holdM = NULL;
2312
2313         /* Get a new message number */
2314         newmsgid = get_new_message_number();
2315         snprintf(msgidbuf, sizeof msgidbuf, "%010ld@%s", newmsgid, config.c_fqdn);
2316
2317         /* Generate an ID if we don't have one already */
2318         if (msg->cm_fields['I']==NULL) {
2319                 msg->cm_fields['I'] = strdup(msgidbuf);
2320         }
2321
2322         /* If the message is big, set its body aside for storage elsewhere */
2323         if (msg->cm_fields['M'] != NULL) {
2324                 if (strlen(msg->cm_fields['M']) > BIGMSG) {
2325                         is_bigmsg = 1;
2326                         holdM = msg->cm_fields['M'];
2327                         msg->cm_fields['M'] = NULL;
2328                 }
2329         }
2330
2331         /* Serialize our data structure for storage in the database */
2332         serialize_message(&smr, msg);
2333
2334         if (is_bigmsg) {
2335                 msg->cm_fields['M'] = holdM;
2336         }
2337
2338         if (smr.len == 0) {
2339                 cprintf("%d Unable to serialize message\n",
2340                         ERROR + INTERNAL_ERROR);
2341                 return (-1L);
2342         }
2343
2344         /* Write our little bundle of joy into the message base */
2345         if (cdb_store(CDB_MSGMAIN, &newmsgid, (int)sizeof(long),
2346                       smr.ser, smr.len) < 0) {
2347                 CtdlLogPrintf(CTDL_ERR, "Can't store message\n");
2348                 retval = 0L;
2349         } else {
2350                 if (is_bigmsg) {
2351                         cdb_store(CDB_BIGMSGS,
2352                                 &newmsgid,
2353                                 (int)sizeof(long),
2354                                 holdM,
2355                                 (strlen(holdM) + 1)
2356                         );
2357                 }
2358                 retval = newmsgid;
2359         }
2360
2361         /* Free the memory we used for the serialized message */
2362         free(smr.ser);
2363
2364         /* Return the *local* message ID to the caller
2365          * (even if we're storing an incoming network message)
2366          */
2367         return(retval);
2368 }
2369
2370
2371
2372 /*
2373  * Serialize a struct CtdlMessage into the format used on disk and network.
2374  *
2375  * This function loads up a "struct ser_ret" (defined in server.h) which
2376  * contains the length of the serialized message and a pointer to the
2377  * serialized message in memory.  THE LATTER MUST BE FREED BY THE CALLER.
2378  */
2379 void serialize_message(struct ser_ret *ret,             /* return values */
2380                         struct CtdlMessage *msg)        /* unserialized msg */
2381 {
2382         size_t wlen, fieldlen;
2383         int i;
2384         static char *forder = FORDER;
2385
2386         /*
2387          * Check for valid message format
2388          */
2389         if (is_valid_message(msg) == 0) {
2390                 CtdlLogPrintf(CTDL_ERR, "serialize_message() aborting due to invalid message\n");
2391                 ret->len = 0;
2392                 ret->ser = NULL;
2393                 return;
2394         }
2395
2396         ret->len = 3;
2397         for (i=0; i<26; ++i) if (msg->cm_fields[(int)forder[i]] != NULL)
2398                 ret->len = ret->len +
2399                         strlen(msg->cm_fields[(int)forder[i]]) + 2;
2400
2401         ret->ser = malloc(ret->len);
2402         if (ret->ser == NULL) {
2403                 CtdlLogPrintf(CTDL_ERR, "serialize_message() malloc(%ld) failed: %s\n",
2404                         (long)ret->len, strerror(errno));
2405                 ret->len = 0;
2406                 ret->ser = NULL;
2407                 return;
2408         }
2409
2410         ret->ser[0] = 0xFF;
2411         ret->ser[1] = msg->cm_anon_type;
2412         ret->ser[2] = msg->cm_format_type;
2413         wlen = 3;
2414
2415         for (i=0; i<26; ++i) if (msg->cm_fields[(int)forder[i]] != NULL) {
2416                 fieldlen = strlen(msg->cm_fields[(int)forder[i]]);
2417                 ret->ser[wlen++] = (char)forder[i];
2418                 safestrncpy((char *)&ret->ser[wlen], msg->cm_fields[(int)forder[i]], fieldlen+1);
2419                 wlen = wlen + fieldlen + 1;
2420         }
2421         if (ret->len != wlen) CtdlLogPrintf(CTDL_ERR, "ERROR: len=%ld wlen=%ld\n",
2422                 (long)ret->len, (long)wlen);
2423
2424         return;
2425 }
2426
2427
2428 /*
2429  * Serialize a struct CtdlMessage into the format used on disk and network.
2430  *
2431  * This function loads up a "struct ser_ret" (defined in server.h) which
2432  * contains the length of the serialized message and a pointer to the
2433  * serialized message in memory.  THE LATTER MUST BE FREED BY THE CALLER.
2434  */
2435 void dump_message(struct CtdlMessage *msg,      /* unserialized msg */
2436                   long Siz)                     /* how many chars ? */
2437 {
2438         size_t wlen;
2439         int i;
2440         static char *forder = FORDER;
2441         char *buf;
2442
2443         /*
2444          * Check for valid message format
2445          */
2446         if (is_valid_message(msg) == 0) {
2447                 CtdlLogPrintf(CTDL_ERR, "dump_message() aborting due to invalid message\n");
2448                 return;
2449         }
2450
2451         buf = (char*) malloc (Siz + 1);
2452
2453         wlen = 3;
2454
2455         for (i=0; i<26; ++i) if (msg->cm_fields[(int)forder[i]] != NULL) {
2456                         snprintf (buf, Siz, " msg[%c] = %s ...\n", (char) forder[i],
2457                                    msg->cm_fields[(int)forder[i]]);
2458                         client_write (buf, strlen(buf));
2459                 }
2460
2461         return;
2462 }
2463
2464
2465
2466 /*
2467  * Check to see if any messages already exist in the current room which
2468  * carry the same Exclusive ID as this one.  If any are found, delete them.
2469  */
2470 void ReplicationChecks(struct CtdlMessage *msg) {
2471         long old_msgnum = (-1L);
2472
2473         if (DoesThisRoomNeedEuidIndexing(&CC->room) == 0) return;
2474
2475         CtdlLogPrintf(CTDL_DEBUG, "Performing replication checks in <%s>\n",
2476                 CC->room.QRname);
2477
2478         /* No exclusive id?  Don't do anything. */
2479         if (msg == NULL) return;
2480         if (msg->cm_fields['E'] == NULL) return;
2481         if (IsEmptyStr(msg->cm_fields['E'])) return;
2482         /*CtdlLogPrintf(CTDL_DEBUG, "Exclusive ID: <%s> for room <%s>\n",
2483                 msg->cm_fields['E'], CC->room.QRname);*/
2484
2485         old_msgnum = locate_message_by_euid(msg->cm_fields['E'], &CC->room);
2486         if (old_msgnum > 0L) {
2487                 CtdlLogPrintf(CTDL_DEBUG, "ReplicationChecks() replacing message %ld\n", old_msgnum);
2488                 CtdlDeleteMessages(CC->room.QRname, &old_msgnum, 1, "");
2489         }
2490 }
2491
2492
2493
2494 /*
2495  * Save a message to disk and submit it into the delivery system.
2496  */
2497 long CtdlSubmitMsg(struct CtdlMessage *msg,     /* message to save */
2498                 struct recptypes *recps,        /* recipients (if mail) */
2499                 char *force                     /* force a particular room? */
2500 ) {
2501         char submit_filename[128];
2502         char generated_timestamp[32];
2503         char hold_rm[ROOMNAMELEN];
2504         char actual_rm[ROOMNAMELEN];
2505         char force_room[ROOMNAMELEN];
2506         char content_type[SIZ];                 /* We have to learn this */
2507         char recipient[SIZ];
2508         long newmsgid;
2509         char *mptr = NULL;
2510         struct ctdluser userbuf;
2511         int a, i;
2512         struct MetaData smi;
2513         FILE *network_fp = NULL;
2514         static int seqnum = 1;
2515         struct CtdlMessage *imsg = NULL;
2516         char *instr = NULL;
2517         size_t instr_alloc = 0;
2518         struct ser_ret smr;
2519         char *hold_R, *hold_D;
2520         char *collected_addresses = NULL;
2521         struct addresses_to_be_filed *aptr = NULL;
2522         char *saved_rfc822_version = NULL;
2523         int qualified_for_journaling = 0;
2524         struct CitContext *CCC = CC;            /* CachedCitContext - performance boost */
2525
2526         CtdlLogPrintf(CTDL_DEBUG, "CtdlSubmitMsg() called\n");
2527         if (is_valid_message(msg) == 0) return(-1);     /* self check */
2528
2529         /* If this message has no timestamp, we take the liberty of
2530          * giving it one, right now.
2531          */
2532         if (msg->cm_fields['T'] == NULL) {
2533                 snprintf(generated_timestamp, sizeof generated_timestamp, "%ld", (long)time(NULL));
2534                 msg->cm_fields['T'] = strdup(generated_timestamp);
2535         }
2536
2537         /* If this message has no path, we generate one.
2538          */
2539         if (msg->cm_fields['P'] == NULL) {
2540                 if (msg->cm_fields['A'] != NULL) {
2541                         msg->cm_fields['P'] = strdup(msg->cm_fields['A']);
2542                         for (a=0; !IsEmptyStr(&msg->cm_fields['P'][a]); ++a) {
2543                                 if (isspace(msg->cm_fields['P'][a])) {
2544                                         msg->cm_fields['P'][a] = ' ';
2545                                 }
2546                         }
2547                 }
2548                 else {
2549                         msg->cm_fields['P'] = strdup("unknown");
2550                 }
2551         }
2552
2553         if (force == NULL) {
2554                 strcpy(force_room, "");
2555         }
2556         else {
2557                 strcpy(force_room, force);
2558         }
2559
2560         /* Learn about what's inside, because it's what's inside that counts */
2561         if (msg->cm_fields['M'] == NULL) {
2562                 CtdlLogPrintf(CTDL_ERR, "ERROR: attempt to save message with NULL body\n");
2563                 return(-2);
2564         }
2565
2566         switch (msg->cm_format_type) {
2567         case 0:
2568                 strcpy(content_type, "text/x-citadel-variformat");
2569                 break;
2570         case 1:
2571                 strcpy(content_type, "text/plain");
2572                 break;
2573         case 4:
2574                 strcpy(content_type, "text/plain");
2575                 mptr = bmstrcasestr(msg->cm_fields['M'], "Content-type:");
2576                 if (mptr != NULL) {
2577                         char *aptr;
2578                         safestrncpy(content_type, &mptr[13], sizeof content_type);
2579                         striplt(content_type);
2580                         aptr = content_type;
2581                         while (!IsEmptyStr(aptr)) {
2582                                 if ((*aptr == ';')
2583                                     || (*aptr == ' ')
2584                                     || (*aptr == 13)
2585                                     || (*aptr == 10)) {
2586                                         *aptr = 0;
2587                                 }
2588                                 else aptr++;
2589                         }
2590                 }
2591         }
2592
2593         /* Goto the correct room */
2594         CtdlLogPrintf(CTDL_DEBUG, "Selected room %s\n", (recps) ? CCC->room.QRname : SENTITEMS);
2595         strcpy(hold_rm, CCC->room.QRname);
2596         strcpy(actual_rm, CCC->room.QRname);
2597         if (recps != NULL) {
2598                 strcpy(actual_rm, SENTITEMS);
2599         }
2600
2601         /* If the user is a twit, move to the twit room for posting */
2602         if (TWITDETECT) {
2603                 if (CCC->user.axlevel == 2) {
2604                         strcpy(hold_rm, actual_rm);
2605                         strcpy(actual_rm, config.c_twitroom);
2606                         CtdlLogPrintf(CTDL_DEBUG, "Diverting to twit room\n");
2607                 }
2608         }
2609
2610         /* ...or if this message is destined for Aide> then go there. */
2611         if (!IsEmptyStr(force_room)) {
2612                 strcpy(actual_rm, force_room);
2613         }
2614
2615         CtdlLogPrintf(CTDL_DEBUG, "Final selection: %s\n", actual_rm);
2616         if (strcasecmp(actual_rm, CCC->room.QRname)) {
2617                 /* getroom(&CCC->room, actual_rm); */
2618                 usergoto(actual_rm, 0, 1, NULL, NULL);
2619         }
2620
2621         /*
2622          * If this message has no O (room) field, generate one.
2623          */
2624         if (msg->cm_fields['O'] == NULL) {
2625                 msg->cm_fields['O'] = strdup(CCC->room.QRname);
2626         }
2627
2628         /* Perform "before save" hooks (aborting if any return nonzero) */
2629         CtdlLogPrintf(CTDL_DEBUG, "Performing before-save hooks\n");
2630         if (PerformMessageHooks(msg, EVT_BEFORESAVE) > 0) return(-3);
2631
2632         /*
2633          * If this message has an Exclusive ID, and the room is replication
2634          * checking enabled, then do replication checks.
2635          */
2636         if (DoesThisRoomNeedEuidIndexing(&CCC->room)) {
2637                 ReplicationChecks(msg);
2638         }
2639
2640         /* Save it to disk */
2641         CtdlLogPrintf(CTDL_DEBUG, "Saving to disk\n");
2642         newmsgid = send_message(msg);
2643         if (newmsgid <= 0L) return(-5);
2644
2645         /* Write a supplemental message info record.  This doesn't have to
2646          * be a critical section because nobody else knows about this message
2647          * yet.
2648          */
2649         CtdlLogPrintf(CTDL_DEBUG, "Creating MetaData record\n");
2650         memset(&smi, 0, sizeof(struct MetaData));
2651         smi.meta_msgnum = newmsgid;
2652         smi.meta_refcount = 0;
2653         safestrncpy(smi.meta_content_type, content_type,
2654                         sizeof smi.meta_content_type);
2655
2656         /*
2657          * Measure how big this message will be when rendered as RFC822.
2658          * We do this for two reasons:
2659          * 1. We need the RFC822 length for the new metadata record, so the
2660          *    POP and IMAP services don't have to calculate message lengths
2661          *    while the user is waiting (multiplied by potentially hundreds
2662          *    or thousands of messages).
2663          * 2. If journaling is enabled, we will need an RFC822 version of the
2664          *    message to attach to the journalized copy.
2665          */
2666         if (CCC->redirect_buffer != NULL) {
2667                 CtdlLogPrintf(CTDL_ALERT, "CCC->redirect_buffer is not NULL during message submission!\n");
2668                 abort();
2669         }
2670         CCC->redirect_buffer = malloc(SIZ);
2671         CCC->redirect_len = 0;
2672         CCC->redirect_alloc = SIZ;
2673         CtdlOutputPreLoadedMsg(msg, MT_RFC822, HEADERS_ALL, 0, 1);
2674         smi.meta_rfc822_length = CCC->redirect_len;
2675         saved_rfc822_version = CCC->redirect_buffer;
2676         CCC->redirect_buffer = NULL;
2677         CCC->redirect_len = 0;
2678         CCC->redirect_alloc = 0;
2679
2680         PutMetaData(&smi);
2681
2682         /* Now figure out where to store the pointers */
2683         CtdlLogPrintf(CTDL_DEBUG, "Storing pointers\n");
2684
2685         /* If this is being done by the networker delivering a private
2686          * message, we want to BYPASS saving the sender's copy (because there
2687          * is no local sender; it would otherwise go to the Trashcan).
2688          */
2689         if ((!CCC->internal_pgm) || (recps == NULL)) {
2690                 if (CtdlSaveMsgPointerInRoom(actual_rm, newmsgid, 1, msg) != 0) {
2691                         CtdlLogPrintf(CTDL_ERR, "ERROR saving message pointer!\n");
2692                         CtdlSaveMsgPointerInRoom(config.c_aideroom, newmsgid, 0, msg);
2693                 }
2694         }
2695
2696         /* For internet mail, drop a copy in the outbound queue room */
2697         if (recps != NULL)
2698          if (recps->num_internet > 0) {
2699                 CtdlSaveMsgPointerInRoom(SMTP_SPOOLOUT_ROOM, newmsgid, 0, msg);
2700         }
2701
2702         /* If other rooms are specified, drop them there too. */
2703         if (recps != NULL)
2704          if (recps->num_room > 0)
2705           for (i=0; i<num_tokens(recps->recp_room, '|'); ++i) {
2706                 extract_token(recipient, recps->recp_room, i,
2707                                         '|', sizeof recipient);
2708                 CtdlLogPrintf(CTDL_DEBUG, "Delivering to room <%s>\n", recipient);
2709                 CtdlSaveMsgPointerInRoom(recipient, newmsgid, 0, msg);
2710         }
2711
2712         /* Bump this user's messages posted counter. */
2713         CtdlLogPrintf(CTDL_DEBUG, "Updating user\n");
2714         lgetuser(&CCC->user, CCC->curr_user);
2715         CCC->user.posted = CCC->user.posted + 1;
2716         lputuser(&CCC->user);
2717
2718         /* If this is private, local mail, make a copy in the
2719          * recipient's mailbox and bump the reference count.
2720          */
2721         if (recps != NULL)
2722          if (recps->num_local > 0)
2723           for (i=0; i<num_tokens(recps->recp_local, '|'); ++i) {
2724                 extract_token(recipient, recps->recp_local, i,
2725                                         '|', sizeof recipient);
2726                 CtdlLogPrintf(CTDL_DEBUG, "Delivering private local mail to <%s>\n",
2727                         recipient);
2728                 if (getuser(&userbuf, recipient) == 0) {
2729                         // Add a flag so the Funambol module knows its mail
2730                         msg->cm_fields['W'] = strdup(recipient);
2731                         MailboxName(actual_rm, sizeof actual_rm, &userbuf, MAILROOM);
2732                         CtdlSaveMsgPointerInRoom(actual_rm, newmsgid, 0, msg);
2733                         BumpNewMailCounter(userbuf.usernum);
2734                         if (!IsEmptyStr(config.c_funambol_host) || !IsEmptyStr(config.c_pager_program)) {
2735                         /* Generate a instruction message for the Funambol notification
2736                          * server, in the same style as the SMTP queue
2737                          */
2738                            instr_alloc = 1024;
2739                            instr = malloc(instr_alloc);
2740                            snprintf(instr, instr_alloc,
2741                         "Content-type: %s\n\nmsgid|%ld\nsubmitted|%ld\n"
2742                         "bounceto|%s@%s\n",
2743                         SPOOLMIME, newmsgid, (long)time(NULL),
2744                         msg->cm_fields['A'], msg->cm_fields['N']
2745                         );
2746
2747                            imsg = malloc(sizeof(struct CtdlMessage));
2748                            memset(imsg, 0, sizeof(struct CtdlMessage));
2749                            imsg->cm_magic = CTDLMESSAGE_MAGIC;
2750                            imsg->cm_anon_type = MES_NORMAL;
2751                            imsg->cm_format_type = FMT_RFC822;
2752                            imsg->cm_fields['A'] = strdup("Citadel");
2753                            imsg->cm_fields['J'] = strdup("do not journal");
2754                            imsg->cm_fields['M'] = instr;        /* imsg owns this memory now */
2755                            imsg->cm_fields['W'] = strdup(recipient);
2756                            CtdlSubmitMsg(imsg, NULL, FNBL_QUEUE_ROOM);
2757                            CtdlFreeMessage(imsg);
2758                         }
2759                 }
2760                 else {
2761                         CtdlLogPrintf(CTDL_DEBUG, "No user <%s>\n", recipient);
2762                         CtdlSaveMsgPointerInRoom(config.c_aideroom,
2763                                 newmsgid, 0, msg);
2764                 }
2765         }
2766
2767         /* Perform "after save" hooks */
2768         CtdlLogPrintf(CTDL_DEBUG, "Performing after-save hooks\n");
2769         PerformMessageHooks(msg, EVT_AFTERSAVE);
2770
2771         /* For IGnet mail, we have to save a new copy into the spooler for
2772          * each recipient, with the R and D fields set to the recipient and
2773          * destination-node.  This has two ugly side effects: all other
2774          * recipients end up being unlisted in this recipient's copy of the
2775          * message, and it has to deliver multiple messages to the same
2776          * node.  We'll revisit this again in a year or so when everyone has
2777          * a network spool receiver that can handle the new style messages.
2778          */
2779         if (recps != NULL)
2780          if (recps->num_ignet > 0)
2781           for (i=0; i<num_tokens(recps->recp_ignet, '|'); ++i) {
2782                 extract_token(recipient, recps->recp_ignet, i,
2783                                 '|', sizeof recipient);
2784
2785                 hold_R = msg->cm_fields['R'];
2786                 hold_D = msg->cm_fields['D'];
2787                 msg->cm_fields['R'] = malloc(SIZ);
2788                 msg->cm_fields['D'] = malloc(128);
2789                 extract_token(msg->cm_fields['R'], recipient, 0, '@', SIZ);
2790                 extract_token(msg->cm_fields['D'], recipient, 1, '@', 128);
2791
2792                 serialize_message(&smr, msg);
2793                 if (smr.len > 0) {
2794                         snprintf(submit_filename, sizeof submit_filename,
2795                                          "%s/netmail.%04lx.%04x.%04x",
2796                                          ctdl_netin_dir,
2797                                          (long) getpid(), CCC->cs_pid, ++seqnum);
2798                         network_fp = fopen(submit_filename, "wb+");
2799                         if (network_fp != NULL) {
2800                                 fwrite(smr.ser, smr.len, 1, network_fp);
2801                                 fclose(network_fp);
2802                         }
2803                         free(smr.ser);
2804                 }
2805
2806                 free(msg->cm_fields['R']);
2807                 free(msg->cm_fields['D']);
2808                 msg->cm_fields['R'] = hold_R;
2809                 msg->cm_fields['D'] = hold_D;
2810         }
2811
2812         /* Go back to the room we started from */
2813         CtdlLogPrintf(CTDL_DEBUG, "Returning to original room %s\n", hold_rm);
2814         if (strcasecmp(hold_rm, CCC->room.QRname))
2815                 usergoto(hold_rm, 0, 1, NULL, NULL);
2816
2817         /* For internet mail, generate delivery instructions.
2818          * Yes, this is recursive.  Deal with it.  Infinite recursion does
2819          * not happen because the delivery instructions message does not
2820          * contain a recipient.
2821          */
2822         if (recps != NULL)
2823          if (recps->num_internet > 0) {
2824                 CtdlLogPrintf(CTDL_DEBUG, "Generating delivery instructions\n");
2825                 instr_alloc = 1024;
2826                 instr = malloc(instr_alloc);
2827                 snprintf(instr, instr_alloc,
2828                         "Content-type: %s\n\nmsgid|%ld\nsubmitted|%ld\n"
2829                         "bounceto|%s@%s\n",
2830                         SPOOLMIME, newmsgid, (long)time(NULL),
2831                         msg->cm_fields['A'], msg->cm_fields['N']
2832                 );
2833
2834                 for (i=0; i<num_tokens(recps->recp_internet, '|'); ++i) {
2835                         size_t tmp = strlen(instr);
2836                         extract_token(recipient, recps->recp_internet, i, '|', sizeof recipient);
2837                         if ((tmp + strlen(recipient) + 32) > instr_alloc) {
2838                                 instr_alloc = instr_alloc * 2;
2839                                 instr = realloc(instr, instr_alloc);
2840                         }
2841                         snprintf(&instr[tmp], instr_alloc - tmp, "remote|%s|0||\n", recipient);
2842                 }
2843
2844                 imsg = malloc(sizeof(struct CtdlMessage));
2845                 memset(imsg, 0, sizeof(struct CtdlMessage));
2846                 imsg->cm_magic = CTDLMESSAGE_MAGIC;
2847                 imsg->cm_anon_type = MES_NORMAL;
2848                 imsg->cm_format_type = FMT_RFC822;
2849                 imsg->cm_fields['A'] = strdup("Citadel");
2850                 imsg->cm_fields['J'] = strdup("do not journal");
2851                 imsg->cm_fields['M'] = instr;   /* imsg owns this memory now */
2852                 CtdlSubmitMsg(imsg, NULL, SMTP_SPOOLOUT_ROOM);
2853                 CtdlFreeMessage(imsg);
2854         }
2855
2856         /*
2857          * Any addresses to harvest for someone's address book?
2858          */
2859         if ( (CCC->logged_in) && (recps != NULL) ) {
2860                 collected_addresses = harvest_collected_addresses(msg);
2861         }
2862
2863         if (collected_addresses != NULL) {
2864                 begin_critical_section(S_ATBF);
2865                 aptr = (struct addresses_to_be_filed *)
2866                         malloc(sizeof(struct addresses_to_be_filed));
2867                 aptr->next = atbf;
2868                 MailboxName(actual_rm, sizeof actual_rm,
2869                         &CCC->user, USERCONTACTSROOM);
2870                 aptr->roomname = strdup(actual_rm);
2871                 aptr->collected_addresses = collected_addresses;
2872                 atbf = aptr;
2873                 end_critical_section(S_ATBF);
2874         }
2875
2876         /*
2877          * Determine whether this message qualifies for journaling.
2878          */
2879         if (msg->cm_fields['J'] != NULL) {
2880                 qualified_for_journaling = 0;
2881         }
2882         else {
2883                 if (recps == NULL) {
2884                         qualified_for_journaling = config.c_journal_pubmsgs;
2885                 }
2886                 else if (recps->num_local + recps->num_ignet + recps->num_internet > 0) {
2887                         qualified_for_journaling = config.c_journal_email;
2888                 }
2889                 else {
2890                         qualified_for_journaling = config.c_journal_pubmsgs;
2891                 }
2892         }
2893
2894         /*
2895          * Do we have to perform journaling?  If so, hand off the saved
2896          * RFC822 version will be handed off to the journaler for background
2897          * submit.  Otherwise, we have to free the memory ourselves.
2898          */
2899         if (saved_rfc822_version != NULL) {
2900                 if (qualified_for_journaling) {
2901                         JournalBackgroundSubmit(msg, saved_rfc822_version, recps);
2902                 }
2903                 else {
2904                         free(saved_rfc822_version);
2905                 }
2906         }
2907
2908         /* Done. */
2909         return(newmsgid);
2910 }
2911
2912
2913
2914
2915
2916 /*
2917  * Convenience function for generating small administrative messages.
2918  */
2919 void quickie_message(char *from, char *fromaddr, char *to, char *room, char *text,
2920                         int format_type, char *subject)
2921 {
2922         struct CtdlMessage *msg;
2923         struct recptypes *recp = NULL;
2924
2925         msg = malloc(sizeof(struct CtdlMessage));
2926         memset(msg, 0, sizeof(struct CtdlMessage));
2927         msg->cm_magic = CTDLMESSAGE_MAGIC;
2928         msg->cm_anon_type = MES_NORMAL;
2929         msg->cm_format_type = format_type;
2930
2931         if (from != NULL) {
2932                 msg->cm_fields['A'] = strdup(from);
2933         }
2934         else if (fromaddr != NULL) {
2935                 msg->cm_fields['A'] = strdup(fromaddr);
2936                 if (strchr(msg->cm_fields['A'], '@')) {
2937                         *strchr(msg->cm_fields['A'], '@') = 0;
2938                 }
2939         }
2940         else {
2941                 msg->cm_fields['A'] = strdup("Citadel");
2942         }
2943
2944         if (fromaddr != NULL) msg->cm_fields['F'] = strdup(fromaddr);
2945         if (room != NULL) msg->cm_fields['O'] = strdup(room);
2946         msg->cm_fields['N'] = strdup(NODENAME);
2947         if (to != NULL) {
2948                 msg->cm_fields['R'] = strdup(to);
2949                 recp = validate_recipients(to, NULL, 0);
2950         }
2951         if (subject != NULL) {
2952                 msg->cm_fields['U'] = strdup(subject);
2953         }
2954         msg->cm_fields['M'] = strdup(text);
2955
2956         CtdlSubmitMsg(msg, recp, room);
2957         CtdlFreeMessage(msg);
2958         if (recp != NULL) free_recipients(recp);
2959 }
2960
2961
2962
2963 /*
2964  * Back end function used by CtdlMakeMessage() and similar functions
2965  */
2966 char *CtdlReadMessageBody(char *terminator,     /* token signalling EOT */
2967                         size_t maxlen,          /* maximum message length */
2968                         char *exist,            /* if non-null, append to it;
2969                                                    exist is ALWAYS freed  */
2970                         int crlf,               /* CRLF newlines instead of LF */
2971                         int sock                /* socket handle or 0 for this session's client socket */
2972                         ) {
2973         char buf[1024];
2974         int linelen;
2975         size_t message_len = 0;
2976         size_t buffer_len = 0;
2977         char *ptr;
2978         char *m;
2979         int flushing = 0;
2980         int finished = 0;
2981         int dotdot = 0;
2982
2983         if (exist == NULL) {
2984                 m = malloc(4096);
2985                 m[0] = 0;
2986                 buffer_len = 4096;
2987                 message_len = 0;
2988         }
2989         else {
2990                 message_len = strlen(exist);
2991                 buffer_len = message_len + 4096;
2992                 m = realloc(exist, buffer_len);
2993                 if (m == NULL) {
2994                         free(exist);
2995                         return m;
2996                 }
2997         }
2998
2999         /* Do we need to change leading ".." to "." for SMTP escaping? */
3000         if (!strcmp(terminator, ".")) {
3001                 dotdot = 1;
3002         }
3003
3004         /* flush the input if we have nowhere to store it */
3005         if (m == NULL) {
3006                 flushing = 1;
3007         }
3008
3009         /* read in the lines of message text one by one */
3010         do {
3011                 if (sock > 0) {
3012                         if (sock_getln(sock, buf, (sizeof buf - 3)) < 0) finished = 1;
3013                 }
3014                 else {
3015                         if (client_getln(buf, (sizeof buf - 3)) < 1) finished = 1;
3016                 }
3017                 if (!strcmp(buf, terminator)) finished = 1;
3018                 if (crlf) {
3019                         strcat(buf, "\r\n");
3020                 }
3021                 else {
3022                         strcat(buf, "\n");
3023                 }
3024
3025                 /* Unescape SMTP-style input of two dots at the beginning of the line */
3026                 if (dotdot) {
3027                         if (!strncmp(buf, "..", 2)) {
3028                                 strcpy(buf, &buf[1]);
3029                         }
3030                 }
3031
3032                 if ( (!flushing) && (!finished) ) {
3033                         /* Measure the line */
3034                         linelen = strlen(buf);
3035
3036                         /* augment the buffer if we have to */
3037                         if ((message_len + linelen) >= buffer_len) {
3038                                 ptr = realloc(m, (buffer_len * 2) );
3039                                 if (ptr == NULL) {      /* flush if can't allocate */
3040                                         flushing = 1;
3041                                 } else {
3042                                         buffer_len = (buffer_len * 2);
3043                                         m = ptr;
3044                                         CtdlLogPrintf(CTDL_DEBUG, "buffer_len is now %ld\n", (long)buffer_len);
3045                                 }
3046                         }
3047
3048                         /* Add the new line to the buffer.  NOTE: this loop must avoid
3049                         * using functions like strcat() and strlen() because they
3050                         * traverse the entire buffer upon every call, and doing that
3051                         * for a multi-megabyte message slows it down beyond usability.
3052                         */
3053                         strcpy(&m[message_len], buf);
3054                         message_len += linelen;
3055                 }
3056
3057                 /* if we've hit the max msg length, flush the rest */
3058                 if (message_len >= maxlen) flushing = 1;
3059
3060         } while (!finished);
3061         return(m);
3062 }
3063
3064
3065
3066
3067 /*
3068  * Build a binary message to be saved on disk.
3069  * (NOTE: if you supply 'preformatted_text', the buffer you give it
3070  * will become part of the message.  This means you are no longer
3071  * responsible for managing that memory -- it will be freed along with
3072  * the rest of the fields when CtdlFreeMessage() is called.)
3073  */
3074
3075 struct CtdlMessage *CtdlMakeMessage(
3076         struct ctdluser *author,        /* author's user structure */
3077         char *recipient,                /* NULL if it's not mail */
3078         char *recp_cc,                  /* NULL if it's not mail */
3079         char *room,                     /* room where it's going */
3080         int type,                       /* see MES_ types in header file */
3081         int format_type,                /* variformat, plain text, MIME... */
3082         char *fake_name,                /* who we're masquerading as */
3083         char *my_email,                 /* which of my email addresses to use (empty is ok) */
3084         char *subject,                  /* Subject (optional) */
3085         char *supplied_euid,            /* ...or NULL if this is irrelevant */
3086         char *preformatted_text,        /* ...or NULL to read text from client */
3087         char *references                /* Thread references */
3088 ) {
3089         char dest_node[256];
3090         char buf[1024];
3091         struct CtdlMessage *msg;
3092
3093         msg = malloc(sizeof(struct CtdlMessage));
3094         memset(msg, 0, sizeof(struct CtdlMessage));
3095         msg->cm_magic = CTDLMESSAGE_MAGIC;
3096         msg->cm_anon_type = type;
3097         msg->cm_format_type = format_type;
3098
3099         /* Don't confuse the poor folks if it's not routed mail. */
3100         strcpy(dest_node, "");
3101
3102         striplt(recipient);
3103         striplt(recp_cc);
3104
3105         /* Path or Return-Path */
3106         if (my_email == NULL) my_email = "";
3107
3108         if (!IsEmptyStr(my_email)) {
3109                 msg->cm_fields['P'] = strdup(my_email);
3110         }
3111         else {
3112                 snprintf(buf, sizeof buf, "%s", author->fullname);
3113                 msg->cm_fields['P'] = strdup(buf);
3114         }
3115         convert_spaces_to_underscores(msg->cm_fields['P']);
3116
3117         snprintf(buf, sizeof buf, "%ld", (long)time(NULL));     /* timestamp */
3118         msg->cm_fields['T'] = strdup(buf);
3119
3120         if (fake_name[0])                                       /* author */
3121                 msg->cm_fields['A'] = strdup(fake_name);
3122         else
3123                 msg->cm_fields['A'] = strdup(author->fullname);
3124
3125         if (CC->room.QRflags & QR_MAILBOX) {            /* room */
3126                 msg->cm_fields['O'] = strdup(&CC->room.QRname[11]);
3127         }
3128         else {
3129                 msg->cm_fields['O'] = strdup(CC->room.QRname);
3130         }
3131
3132         msg->cm_fields['N'] = strdup(NODENAME);         /* nodename */
3133         msg->cm_fields['H'] = strdup(HUMANNODE);                /* hnodename */
3134
3135         if (recipient[0] != 0) {
3136                 msg->cm_fields['R'] = strdup(recipient);
3137         }
3138         if (recp_cc[0] != 0) {
3139                 msg->cm_fields['Y'] = strdup(recp_cc);
3140         }
3141         if (dest_node[0] != 0) {
3142                 msg->cm_fields['D'] = strdup(dest_node);
3143         }
3144
3145         if (!IsEmptyStr(my_email)) {
3146                 msg->cm_fields['F'] = strdup(my_email);
3147         }
3148         else if ( (author == &CC->user) && (!IsEmptyStr(CC->cs_inet_email)) ) {
3149                 msg->cm_fields['F'] = strdup(CC->cs_inet_email);
3150         }
3151
3152         if (subject != NULL) {
3153                 long length;
3154                 striplt(subject);
3155                 length = strlen(subject);
3156                 if (length > 0) {
3157                         long i;
3158                         long IsAscii;
3159                         IsAscii = -1;
3160                         i = 0;
3161                         while ((subject[i] != '\0') &&
3162                                (IsAscii = isascii(subject[i]) != 0 ))
3163                                 i++;
3164                         if (IsAscii != 0)
3165                                 msg->cm_fields['U'] = strdup(subject);
3166                         else /* ok, we've got utf8 in the string. */
3167                         {
3168                                 msg->cm_fields['U'] = rfc2047encode(subject, length);
3169                         }
3170
3171                 }
3172         }
3173
3174         if (supplied_euid != NULL) {
3175                 msg->cm_fields['E'] = strdup(supplied_euid);
3176         }
3177
3178         if (references != NULL) {
3179                 if (!IsEmptyStr(references)) {
3180                         msg->cm_fields['W'] = strdup(references);
3181                 }
3182         }
3183
3184         if (preformatted_text != NULL) {
3185                 msg->cm_fields['M'] = preformatted_text;
3186         }
3187         else {
3188                 msg->cm_fields['M'] = CtdlReadMessageBody("000", config.c_maxmsglen, NULL, 0, 0);
3189         }
3190
3191         return(msg);
3192 }
3193
3194
3195 /*
3196  * Check to see whether we have permission to post a message in the current
3197  * room.  Returns a *CITADEL ERROR CODE* and puts a message in errmsgbuf, or
3198  * returns 0 on success.
3199  */
3200 int CtdlDoIHavePermissionToPostInThisRoom(char *errmsgbuf,
3201                                           size_t n,
3202                                           const char* RemoteIdentifier,
3203                                           int PostPublic) {
3204         int ra;
3205
3206         if (!(CC->logged_in) &&
3207             (PostPublic == POST_LOGGED_IN)) {
3208                 snprintf(errmsgbuf, n, "Not logged in.");
3209                 return (ERROR + NOT_LOGGED_IN);
3210         }
3211         else if (PostPublic == CHECK_EXISTANCE) {
3212                 return (0); // We're Evaling whether a recipient exists
3213         }
3214         else if (!(CC->logged_in)) {
3215
3216                 if ((CC->room.QRflags & QR_READONLY)) {
3217                         snprintf(errmsgbuf, n, "Not logged in.");
3218                         return (ERROR + NOT_LOGGED_IN);
3219                 }
3220                 if (CC->room.QRflags2 & QR2_MODERATED) {
3221                         snprintf(errmsgbuf, n, "Not logged in Moderation feature not yet implemented!");
3222                         return (ERROR + NOT_LOGGED_IN);
3223                 }
3224                 if ((PostPublic!=POST_LMTP) &&(CC->room.QRflags2 & QR2_SMTP_PUBLIC) == 0) {
3225                         SpoolControl *sc;
3226                         char filename[SIZ];
3227                         int found;
3228
3229                         if (RemoteIdentifier == NULL)
3230                         {
3231                                 snprintf(errmsgbuf, n, "Need sender to permit access.");
3232                                 return (ERROR + USERNAME_REQUIRED);
3233                         }
3234
3235                         assoc_file_name(filename, sizeof filename, &CC->room, ctdl_netcfg_dir);
3236                         begin_critical_section(S_NETCONFIGS);
3237                         if (!read_spoolcontrol_file(&sc, filename))
3238                         {
3239                                 end_critical_section(S_NETCONFIGS);
3240                                 snprintf(errmsgbuf, n,
3241                                         "This mailing list only accepts posts from subscribers.");
3242                                 return (ERROR + NO_SUCH_USER);
3243                         }
3244                         end_critical_section(S_NETCONFIGS);
3245                         found = is_recipient (sc, RemoteIdentifier);
3246                         free_spoolcontrol_struct(&sc);
3247                         if (found) {
3248                                 return (0);
3249                         }
3250                         else {
3251                                 snprintf(errmsgbuf, n,
3252                                         "This mailing list only accepts posts from subscribers.");
3253                                 return (ERROR + NO_SUCH_USER);
3254                         }
3255                 }
3256                 return (0);
3257
3258         }
3259
3260         if ((CC->user.axlevel < 2)
3261             && ((CC->room.QRflags & QR_MAILBOX) == 0)) {
3262                 snprintf(errmsgbuf, n, "Need to be validated to enter "
3263                                 "(except in %s> to sysop)", MAILROOM);
3264                 return (ERROR + HIGHER_ACCESS_REQUIRED);
3265         }
3266
3267         CtdlRoomAccess(&CC->room, &CC->user, &ra, NULL);
3268         if (!(ra & UA_POSTALLOWED)) {
3269                 snprintf(errmsgbuf, n, "Higher access is required to post in this room.");
3270                 return (ERROR + HIGHER_ACCESS_REQUIRED);
3271         }
3272
3273         strcpy(errmsgbuf, "Ok");
3274         return(0);
3275 }
3276
3277
3278 /*
3279  * Check to see if the specified user has Internet mail permission
3280  * (returns nonzero if permission is granted)
3281  */
3282 int CtdlCheckInternetMailPermission(struct ctdluser *who) {
3283
3284         /* Do not allow twits to send Internet mail */
3285         if (who->axlevel <= 2) return(0);
3286
3287         /* Globally enabled? */
3288         if (config.c_restrict == 0) return(1);
3289
3290         /* User flagged ok? */
3291         if (who->flags & US_INTERNET) return(2);
3292
3293         /* Aide level access? */
3294         if (who->axlevel >= 6) return(3);
3295
3296         /* No mail for you! */
3297         return(0);
3298 }
3299
3300
3301 /*
3302  * Validate recipients, count delivery types and errors, and handle aliasing
3303  * FIXME check for dupes!!!!!
3304  *
3305  * Returns 0 if all addresses are ok, ret->num_error = -1 if no addresses
3306  * were specified, or the number of addresses found invalid.
3307  *
3308  * Caller needs to free the result using free_recipients()
3309  */
3310 struct recptypes *validate_recipients(char *supplied_recipients,
3311                                       const char *RemoteIdentifier,
3312                                       int Flags) {
3313         struct recptypes *ret;
3314         char *recipients = NULL;
3315         char this_recp[256];
3316         char this_recp_cooked[256];
3317         char append[SIZ];
3318         int num_recps = 0;
3319         int i, j;
3320         int mailtype;
3321         int invalid;
3322         struct ctdluser tempUS;
3323         struct ctdlroom tempQR;
3324         struct ctdlroom tempQR2;
3325         int err = 0;
3326         char errmsg[SIZ];
3327         int in_quotes = 0;
3328
3329         /* Initialize */
3330         ret = (struct recptypes *) malloc(sizeof(struct recptypes));
3331         if (ret == NULL) return(NULL);
3332
3333         /* Set all strings to null and numeric values to zero */
3334         memset(ret, 0, sizeof(struct recptypes));
3335
3336         if (supplied_recipients == NULL) {
3337                 recipients = strdup("");
3338         }
3339         else {
3340                 recipients = strdup(supplied_recipients);
3341         }
3342
3343         /* Allocate some memory.  Yes, this allocates 500% more memory than we will
3344          * actually need, but it's healthier for the heap than doing lots of tiny
3345          * realloc() calls instead.
3346          */
3347
3348         ret->errormsg = malloc(strlen(recipients) + 1024);
3349         ret->recp_local = malloc(strlen(recipients) + 1024);
3350         ret->recp_internet = malloc(strlen(recipients) + 1024);
3351         ret->recp_ignet = malloc(strlen(recipients) + 1024);
3352         ret->recp_room = malloc(strlen(recipients) + 1024);
3353         ret->display_recp = malloc(strlen(recipients) + 1024);
3354
3355         ret->errormsg[0] = 0;
3356         ret->recp_local[0] = 0;
3357         ret->recp_internet[0] = 0;
3358         ret->recp_ignet[0] = 0;
3359         ret->recp_room[0] = 0;
3360         ret->display_recp[0] = 0;
3361
3362         ret->recptypes_magic = RECPTYPES_MAGIC;
3363
3364         /* Change all valid separator characters to commas */
3365         for (i=0; !IsEmptyStr(&recipients[i]); ++i) {
3366                 if ((recipients[i] == ';') || (recipients[i] == '|')) {
3367                         recipients[i] = ',';
3368                 }
3369         }
3370
3371         /* Now start extracting recipients... */
3372
3373         while (!IsEmptyStr(recipients)) {
3374
3375                 for (i=0; i<=strlen(recipients); ++i) {
3376                         if (recipients[i] == '\"') in_quotes = 1 - in_quotes;
3377                         if ( ( (recipients[i] == ',') && (!in_quotes) ) || (recipients[i] == 0) ) {
3378                                 safestrncpy(this_recp, recipients, i+1);
3379                                 this_recp[i] = 0;
3380                                 if (recipients[i] == ',') {
3381                                         strcpy(recipients, &recipients[i+1]);
3382                                 }
3383                                 else {
3384                                         strcpy(recipients, "");
3385                                 }
3386                                 break;
3387                         }
3388                 }
3389
3390                 striplt(this_recp);
3391                 if (IsEmptyStr(this_recp))
3392                         break;
3393                 CtdlLogPrintf(CTDL_DEBUG, "Evaluating recipient #%d: %s\n", num_recps, this_recp);
3394                 ++num_recps;
3395                 mailtype = alias(this_recp);
3396                 mailtype = alias(this_recp);
3397                 mailtype = alias(this_recp);
3398                 j = 0;
3399                 for (j=0; !IsEmptyStr(&this_recp[j]); ++j) {
3400                         if (this_recp[j]=='_') {
3401                                 this_recp_cooked[j] = ' ';
3402                         }
3403                         else {
3404                                 this_recp_cooked[j] = this_recp[j];
3405                         }
3406                 }
3407                 this_recp_cooked[j] = '\0';
3408                 invalid = 0;
3409                 errmsg[0] = 0;
3410                 switch(mailtype) {
3411                         case MES_LOCAL:
3412                                 if (!strcasecmp(this_recp, "sysop")) {
3413                                         ++ret->num_room;
3414                                         strcpy(this_recp, config.c_aideroom);
3415                                         if (!IsEmptyStr(ret->recp_room)) {
3416                                                 strcat(ret->recp_room, "|");
3417                                         }
3418                                         strcat(ret->recp_room, this_recp);
3419                                 }
3420                                 else if ( (!strncasecmp(this_recp, "room_", 5))
3421                                       && (!getroom(&tempQR, &this_recp_cooked[5])) ) {
3422
3423                                         /* Save room so we can restore it later */
3424                                         tempQR2 = CC->room;
3425                                         CC->room = tempQR;
3426
3427                                         /* Check permissions to send mail to this room */
3428                                         err = CtdlDoIHavePermissionToPostInThisRoom(errmsg,
3429                                                                                     sizeof errmsg,
3430                                                                                     RemoteIdentifier,
3431                                                                                     Flags
3432                                         );
3433                                         if (err)
3434                                         {
3435                                                 ++ret->num_error;
3436                                                 invalid = 1;
3437                                         }
3438                                         else {
3439                                                 ++ret->num_room;
3440                                                 if (!IsEmptyStr(ret->recp_room)) {
3441                                                         strcat(ret->recp_room, "|");
3442                                                 }
3443                                                 strcat(ret->recp_room, &this_recp_cooked[5]);
3444                                         }
3445
3446                                         /* Restore room in case something needs it */
3447                                         CC->room = tempQR2;
3448
3449                                 }
3450                                 else if (getuser(&tempUS, this_recp) == 0) {
3451                                         ++ret->num_local;
3452                                         strcpy(this_recp, tempUS.fullname);
3453                                         if (!IsEmptyStr(ret->recp_local)) {
3454                                                 strcat(ret->recp_local, "|");
3455                                         }
3456                                         strcat(ret->recp_local, this_recp);
3457                                 }
3458                                 else if (getuser(&tempUS, this_recp_cooked) == 0) {
3459                                         ++ret->num_local;
3460                                         strcpy(this_recp, tempUS.fullname);
3461                                         if (!IsEmptyStr(ret->recp_local)) {
3462                                                 strcat(ret->recp_local, "|");
3463                                         }
3464                                         strcat(ret->recp_local, this_recp);
3465                                 }
3466                                 else {
3467                                         ++ret->num_error;
3468                                         invalid = 1;
3469                                 }
3470                                 break;
3471                         case MES_INTERNET:
3472                                 /* Yes, you're reading this correctly: if the target
3473                                  * domain points back to the local system or an attached
3474                                  * Citadel directory, the address is invalid.  That's
3475                                  * because if the address were valid, we would have
3476                                  * already translated it to a local address by now.
3477                                  */
3478                                 if (IsDirectory(this_recp, 0)) {
3479                                         ++ret->num_error;
3480                                         invalid = 1;
3481                                 }
3482                                 else {
3483                                         ++ret->num_internet;
3484                                         if (!IsEmptyStr(ret->recp_internet)) {
3485                                                 strcat(ret->recp_internet, "|");
3486                                         }
3487                                         strcat(ret->recp_internet, this_recp);
3488                                 }
3489                                 break;
3490                         case MES_IGNET:
3491                                 ++ret->num_ignet;
3492                                 if (!IsEmptyStr(ret->recp_ignet)) {
3493                                         strcat(ret->recp_ignet, "|");
3494                                 }
3495                                 strcat(ret->recp_ignet, this_recp);
3496                                 break;
3497                         case MES_ERROR:
3498                                 ++ret->num_error;
3499                                 invalid = 1;
3500                                 break;
3501                 }
3502                 if (invalid) {
3503                         if (IsEmptyStr(errmsg)) {
3504                                 snprintf(append, sizeof append, "Invalid recipient: %s", this_recp);
3505                         }
3506                         else {
3507                                 snprintf(append, sizeof append, "%s", errmsg);
3508                         }
3509                         if ( (strlen(ret->errormsg) + strlen(append) + 3) < SIZ) {
3510                                 if (!IsEmptyStr(ret->errormsg)) {
3511                                         strcat(ret->errormsg, "; ");
3512                                 }
3513                                 strcat(ret->errormsg, append);
3514                         }
3515                 }
3516                 else {
3517                         if (IsEmptyStr(ret->display_recp)) {
3518                                 strcpy(append, this_recp);
3519                         }
3520                         else {
3521                                 snprintf(append, sizeof append, ", %s", this_recp);
3522                         }
3523                         if ( (strlen(ret->display_recp)+strlen(append)) < SIZ) {
3524                                 strcat(ret->display_recp, append);
3525                         }
3526                 }
3527         }
3528
3529         if ((ret->num_local + ret->num_internet + ret->num_ignet +
3530            ret->num_room + ret->num_error) == 0) {
3531                 ret->num_error = (-1);
3532                 strcpy(ret->errormsg, "No recipients specified.");
3533         }
3534
3535         CtdlLogPrintf(CTDL_DEBUG, "validate_recipients()\n");
3536         CtdlLogPrintf(CTDL_DEBUG, " local: %d <%s>\n", ret->num_local, ret->recp_local);
3537         CtdlLogPrintf(CTDL_DEBUG, "  room: %d <%s>\n", ret->num_room, ret->recp_room);
3538         CtdlLogPrintf(CTDL_DEBUG, "  inet: %d <%s>\n", ret->num_internet, ret->recp_internet);
3539         CtdlLogPrintf(CTDL_DEBUG, " ignet: %d <%s>\n", ret->num_ignet, ret->recp_ignet);
3540         CtdlLogPrintf(CTDL_DEBUG, " error: %d <%s>\n", ret->num_error, ret->errormsg);
3541
3542         free(recipients);
3543         return(ret);
3544 }
3545
3546
3547 /*
3548  * Destructor for struct recptypes
3549  */
3550 void free_recipients(struct recptypes *valid) {
3551
3552         if (valid == NULL) {
3553                 return;
3554         }
3555
3556         if (valid->recptypes_magic != RECPTYPES_MAGIC) {
3557                 CtdlLogPrintf(CTDL_EMERG, "Attempt to call free_recipients() on some other data type!\n");
3558                 abort();
3559         }
3560
3561         if (valid->errormsg != NULL)            free(valid->errormsg);
3562         if (valid->recp_local != NULL)          free(valid->recp_local);
3563         if (valid->recp_internet != NULL)       free(valid->recp_internet);
3564         if (valid->recp_ignet != NULL)          free(valid->recp_ignet);
3565         if (valid->recp_room != NULL)           free(valid->recp_room);
3566         if (valid->display_recp != NULL)        free(valid->display_recp);
3567         free(valid);
3568 }
3569
3570
3571
3572 /*
3573  * message entry  -  mode 0 (normal)
3574  */
3575 void cmd_ent0(char *entargs)
3576 {
3577         int post = 0;
3578         char recp[SIZ];
3579         char cc[SIZ];
3580         char bcc[SIZ];
3581         char supplied_euid[128];
3582         int anon_flag = 0;
3583         int format_type = 0;
3584         char newusername[256];
3585         char newuseremail[256];
3586         struct CtdlMessage *msg;
3587         int anonymous = 0;
3588         char errmsg[SIZ];
3589         int err = 0;
3590         struct recptypes *valid = NULL;
3591         struct recptypes *valid_to = NULL;
3592         struct recptypes *valid_cc = NULL;
3593         struct recptypes *valid_bcc = NULL;
3594         char subject[SIZ];
3595         int subject_required = 0;
3596         int do_confirm = 0;
3597         long msgnum;
3598         int i, j;
3599         char buf[256];
3600         int newuseremail_ok = 0;
3601         char references[SIZ];
3602         char *ptr;
3603
3604         unbuffer_output();
3605
3606         post = extract_int(entargs, 0);
3607         extract_token(recp, entargs, 1, '|', sizeof recp);
3608         anon_flag = extract_int(entargs, 2);
3609         format_type = extract_int(entargs, 3);
3610         extract_token(subject, entargs, 4, '|', sizeof subject);
3611         extract_token(newusername, entargs, 5, '|', sizeof newusername);
3612         do_confirm = extract_int(entargs, 6);
3613         extract_token(cc, entargs, 7, '|', sizeof cc);
3614         extract_token(bcc, entargs, 8, '|', sizeof bcc);
3615         switch(CC->room.QRdefaultview) {
3616                 case VIEW_NOTES:
3617                 case VIEW_WIKI:
3618                         extract_token(supplied_euid, entargs, 9, '|', sizeof supplied_euid);
3619                         break;
3620                 default:
3621                         supplied_euid[0] = 0;
3622                         break;
3623         }
3624         extract_token(newuseremail, entargs, 10, '|', sizeof newuseremail);
3625         extract_token(references, entargs, 11, '|', sizeof references);
3626         for (ptr=references; *ptr != 0; ++ptr) {
3627                 if (*ptr == '!') *ptr = '|';
3628         }
3629
3630         /* first check to make sure the request is valid. */
3631
3632         err = CtdlDoIHavePermissionToPostInThisRoom(errmsg, sizeof errmsg, NULL, POST_LOGGED_IN);
3633         if (err)
3634         {
3635                 cprintf("%d %s\n", err, errmsg);
3636                 return;
3637         }
3638
3639         /* Check some other permission type things. */
3640
3641         if (IsEmptyStr(newusername)) {
3642                 strcpy(newusername, CC->user.fullname);
3643         }
3644         if (  (CC->user.axlevel < 6)
3645            && (strcasecmp(newusername, CC->user.fullname))
3646            && (strcasecmp(newusername, CC->cs_inet_fn))
3647         ) {
3648                 cprintf("%d You don't have permission to author messages as '%s'.\n",
3649                         ERROR + HIGHER_ACCESS_REQUIRED,
3650                         newusername
3651                 );
3652                 return;
3653         }
3654
3655
3656         if (IsEmptyStr(newuseremail)) {
3657                 newuseremail_ok = 1;
3658         }
3659
3660         if (!IsEmptyStr(newuseremail)) {
3661                 if (!strcasecmp(newuseremail, CC->cs_inet_email)) {
3662                         newuseremail_ok = 1;
3663                 }
3664                 else if (!IsEmptyStr(CC->cs_inet_other_emails)) {
3665                         j = num_tokens(CC->cs_inet_other_emails, '|');
3666                         for (i=0; i<j; ++i) {
3667                                 extract_token(buf, CC->cs_inet_other_emails, i, '|', sizeof buf);
3668                                 if (!strcasecmp(newuseremail, buf)) {
3669                                         newuseremail_ok = 1;
3670                                 }
3671                         }
3672                 }
3673         }
3674
3675         if (!newuseremail_ok) {
3676                 cprintf("%d You don't have permission to author messages as '%s'.\n",
3677                         ERROR + HIGHER_ACCESS_REQUIRED,
3678                         newuseremail
3679                 );
3680                 return;
3681         }
3682
3683         CC->cs_flags |= CS_POSTING;
3684
3685         /* In mailbox rooms we have to behave a little differently --
3686          * make sure the user has specified at least one recipient.  Then
3687          * validate the recipient(s).  We do this for the Mail> room, as
3688          * well as any room which has the "Mailbox" view set.
3689          */
3690
3691         if (  ( (CC->room.QRflags & QR_MAILBOX) && (!strcasecmp(&CC->room.QRname[11], MAILROOM)) )
3692            || ( (CC->room.QRflags & QR_MAILBOX) && (CC->curr_view == VIEW_MAILBOX) )
3693         ) {
3694                 if (CC->user.axlevel < 2) {
3695                         strcpy(recp, "sysop");
3696                         strcpy(cc, "");
3697                         strcpy(bcc, "");
3698                 }
3699
3700                 valid_to = validate_recipients(recp, NULL, 0);
3701                 if (valid_to->num_error > 0) {
3702                         cprintf("%d %s\n", ERROR + NO_SUCH_USER, valid_to->errormsg);
3703                         free_recipients(valid_to);
3704                         return;
3705                 }
3706
3707                 valid_cc = validate_recipients(cc, NULL, 0);
3708                 if (valid_cc->num_error > 0) {
3709                         cprintf("%d %s\n", ERROR + NO_SUCH_USER, valid_cc->errormsg);
3710                         free_recipients(valid_to);
3711                         free_recipients(valid_cc);
3712                         return;
3713                 }
3714
3715                 valid_bcc = validate_recipients(bcc, NULL, 0);
3716                 if (valid_bcc->num_error > 0) {
3717                         cprintf("%d %s\n", ERROR + NO_SUCH_USER, valid_bcc->errormsg);
3718                         free_recipients(valid_to);
3719                         free_recipients(valid_cc);
3720                         free_recipients(valid_bcc);
3721                         return;
3722                 }
3723
3724                 /* Recipient required, but none were specified */
3725                 if ( (valid_to->num_error < 0) && (valid_cc->num_error < 0) && (valid_bcc->num_error < 0) ) {
3726                         free_recipients(valid_to);
3727                         free_recipients(valid_cc);
3728                         free_recipients(valid_bcc);
3729                         cprintf("%d At least one recipient is required.\n", ERROR + NO_SUCH_USER);
3730                         return;
3731                 }
3732
3733                 if (valid_to->num_internet + valid_cc->num_internet + valid_bcc->num_internet > 0) {
3734                         if (CtdlCheckInternetMailPermission(&CC->user)==0) {
3735                                 cprintf("%d You do not have permission "
3736                                         "to send Internet mail.\n",
3737                                         ERROR + HIGHER_ACCESS_REQUIRED);
3738                                 free_recipients(valid_to);
3739                                 free_recipients(valid_cc);
3740                                 free_recipients(valid_bcc);
3741                                 return;
3742                         }
3743                 }
3744
3745                 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)
3746                    && (CC->user.axlevel < 4) ) {
3747                         cprintf("%d Higher access required for network mail.\n",
3748                                 ERROR + HIGHER_ACCESS_REQUIRED);
3749                         free_recipients(valid_to);
3750                         free_recipients(valid_cc);
3751                         free_recipients(valid_bcc);
3752                         return;
3753                 }
3754
3755                 if ((RESTRICT_INTERNET == 1)
3756                     && (valid_to->num_internet + valid_cc->num_internet + valid_bcc->num_internet > 0)
3757                     && ((CC->user.flags & US_INTERNET) == 0)
3758                     && (!CC->internal_pgm)) {
3759                         cprintf("%d You don't have access to Internet mail.\n",
3760                                 ERROR + HIGHER_ACCESS_REQUIRED);
3761                         free_recipients(valid_to);
3762                         free_recipients(valid_cc);
3763                         free_recipients(valid_bcc);
3764                         return;
3765                 }
3766
3767         }
3768
3769         /* Is this a room which has anonymous-only or anonymous-option? */
3770         anonymous = MES_NORMAL;
3771         if (CC->room.QRflags & QR_ANONONLY) {
3772                 anonymous = MES_ANONONLY;
3773         }
3774         if (CC->room.QRflags & QR_ANONOPT) {
3775                 if (anon_flag == 1) {   /* only if the user requested it */
3776                         anonymous = MES_ANONOPT;
3777                 }
3778         }
3779
3780         if ((CC->room.QRflags & QR_MAILBOX) == 0) {
3781                 recp[0] = 0;
3782         }
3783
3784         /* Recommend to the client that the use of a message subject is
3785          * strongly recommended in this room, if either the SUBJECTREQ flag
3786          * is set, or if there is one or more Internet email recipients.
3787          */
3788         if (CC->room.QRflags2 & QR2_SUBJECTREQ) subject_required = 1;
3789         if (valid_to) if (valid_to->num_internet > 0) subject_required = 1;
3790         if (valid_cc) if (valid_cc->num_internet > 0) subject_required = 1;
3791         if (valid_bcc) if (valid_bcc->num_internet > 0) subject_required = 1;
3792
3793         /* If we're only checking the validity of the request, return
3794          * success without creating the message.
3795          */
3796         if (post == 0) {
3797                 cprintf("%d %s|%d\n", CIT_OK,
3798                         ((valid_to != NULL) ? valid_to->display_recp : ""),
3799                         subject_required);
3800                 free_recipients(valid_to);
3801                 free_recipients(valid_cc);
3802                 free_recipients(valid_bcc);
3803                 return;
3804         }
3805
3806         /* We don't need these anymore because we'll do it differently below */
3807         free_recipients(valid_to);
3808         free_recipients(valid_cc);
3809         free_recipients(valid_bcc);
3810
3811         /* Read in the message from the client. */
3812         if (do_confirm) {
3813                 cprintf("%d send message\n", START_CHAT_MODE);
3814         } else {
3815                 cprintf("%d send message\n", SEND_LISTING);
3816         }
3817
3818         msg = CtdlMakeMessage(&CC->user, recp, cc,
3819                 CC->room.QRname, anonymous, format_type,
3820                 newusername, newuseremail, subject,
3821                 ((!IsEmptyStr(supplied_euid)) ? supplied_euid : NULL),
3822                 NULL, references);
3823
3824         /* Put together one big recipients struct containing to/cc/bcc all in
3825          * one.  This is for the envelope.
3826          */
3827         char *all_recps = malloc(SIZ * 3);
3828         strcpy(all_recps, recp);
3829         if (!IsEmptyStr(cc)) {
3830                 if (!IsEmptyStr(all_recps)) {
3831                         strcat(all_recps, ",");
3832                 }
3833                 strcat(all_recps, cc);
3834         }
3835         if (!IsEmptyStr(bcc)) {
3836                 if (!IsEmptyStr(all_recps)) {
3837                         strcat(all_recps, ",");
3838                 }
3839                 strcat(all_recps, bcc);
3840         }
3841         if (!IsEmptyStr(all_recps)) {
3842                 valid = validate_recipients(all_recps, NULL, 0);
3843         }
3844         else {
3845                 valid = NULL;
3846         }
3847         free(all_recps);
3848
3849         if (msg != NULL) {
3850                 msgnum = CtdlSubmitMsg(msg, valid, "");
3851
3852                 if (do_confirm) {
3853                         cprintf("%ld\n", msgnum);
3854                         if (msgnum >= 0L) {
3855                                 cprintf("Message accepted.\n");
3856                         }
3857                         else {
3858                                 cprintf("Internal error.\n");
3859                         }
3860                         if (msg->cm_fields['E'] != NULL) {
3861                                 cprintf("%s\n", msg->cm_fields['E']);
3862                         } else {
3863                                 cprintf("\n");
3864                         }
3865                         cprintf("000\n");
3866                 }
3867
3868                 CtdlFreeMessage(msg);
3869         }
3870         if (valid != NULL) {
3871                 free_recipients(valid);
3872         }
3873         return;
3874 }
3875
3876
3877
3878 /*
3879  * API function to delete messages which match a set of criteria
3880  * (returns the actual number of messages deleted)
3881  */
3882 int CtdlDeleteMessages(char *room_name,         /* which room */
3883                         long *dmsgnums,         /* array of msg numbers to be deleted */
3884                         int num_dmsgnums,       /* number of msgs to be deleted, or 0 for "any" */
3885                         char *content_type      /* or "" for any.  regular expressions expected. */
3886 )
3887 {
3888         struct ctdlroom qrbuf;
3889         struct cdbdata *cdbfr;
3890         long *msglist = NULL;
3891         long *dellist = NULL;
3892         int num_msgs = 0;
3893         int i, j;
3894         int num_deleted = 0;
3895         int delete_this;
3896         struct MetaData smi;
3897         regex_t re;
3898         regmatch_t pm;
3899         int need_to_free_re = 0;
3900
3901         if (content_type) if (!IsEmptyStr(content_type)) {
3902                 regcomp(&re, content_type, 0);
3903                 need_to_free_re = 1;
3904         }
3905         CtdlLogPrintf(CTDL_DEBUG, "CtdlDeleteMessages(%s, %d msgs, %s)\n",
3906                 room_name, num_dmsgnums, content_type);
3907
3908         /* get room record, obtaining a lock... */
3909         if (lgetroom(&qrbuf, room_name) != 0) {
3910                 CtdlLogPrintf(CTDL_ERR, "CtdlDeleteMessages(): Room <%s> not found\n",
3911                         room_name);
3912                 if (need_to_free_re) regfree(&re);
3913                 return (0);     /* room not found */
3914         }
3915         cdbfr = cdb_fetch(CDB_MSGLISTS, &qrbuf.QRnumber, sizeof(long));
3916
3917         if (cdbfr != NULL) {
3918                 dellist = malloc(cdbfr->len);
3919                 msglist = (long *) cdbfr->ptr;
3920                 cdbfr->ptr = NULL;      /* CtdlDeleteMessages() now owns this memory */
3921                 num_msgs = cdbfr->len / sizeof(long);
3922                 cdb_free(cdbfr);
3923         }
3924         if (num_msgs > 0) {
3925                 for (i = 0; i < num_msgs; ++i) {
3926                         delete_this = 0x00;
3927
3928                         /* Set/clear a bit for each criterion */
3929
3930                         /* 0 messages in the list or a null list means that we are
3931                          * interested in deleting any messages which meet the other criteria.
3932                          */
3933                         if ((num_dmsgnums == 0) || (dmsgnums == NULL)) {
3934                                 delete_this |= 0x01;
3935                         }
3936                         else {
3937                                 for (j=0; j<num_dmsgnums; ++j) {
3938                                         if (msglist[i] == dmsgnums[j]) {
3939                                                 delete_this |= 0x01;
3940                                         }
3941                                 }
3942                         }
3943
3944                         if (IsEmptyStr(content_type)) {
3945                                 delete_this |= 0x02;
3946                         } else {
3947                                 GetMetaData(&smi, msglist[i]);
3948                                 if (regexec(&re, smi.meta_content_type, 1, &pm, 0) == 0) {
3949                                         delete_this |= 0x02;
3950                                 }
3951                         }
3952
3953                         /* Delete message only if all bits are set */
3954                         if (delete_this == 0x03) {
3955                                 dellist[num_deleted++] = msglist[i];
3956                                 msglist[i] = 0L;
3957                         }
3958                 }
3959
3960                 num_msgs = sort_msglist(msglist, num_msgs);
3961                 cdb_store(CDB_MSGLISTS, &qrbuf.QRnumber, (int)sizeof(long),
3962                           msglist, (int)(num_msgs * sizeof(long)));
3963
3964                 qrbuf.QRhighest = msglist[num_msgs - 1];
3965         }
3966         lputroom(&qrbuf);
3967
3968         /* Go through the messages we pulled out of the index, and decrement
3969          * their reference counts by 1.  If this is the only room the message
3970          * was in, the reference count will reach zero and the message will
3971          * automatically be deleted from the database.  We do this in a
3972          * separate pass because there might be plug-in hooks getting called,
3973          * and we don't want that happening during an S_ROOMS critical
3974          * section.
3975          */
3976         if (num_deleted) for (i=0; i<num_deleted; ++i) {
3977                 PerformDeleteHooks(qrbuf.QRname, dellist[i]);
3978                 AdjRefCount(dellist[i], -1);
3979         }
3980
3981         /* Now free the memory we used, and go away. */
3982         if (msglist != NULL) free(msglist);
3983         if (dellist != NULL) free(dellist);
3984         CtdlLogPrintf(CTDL_DEBUG, "%d message(s) deleted.\n", num_deleted);
3985         if (need_to_free_re) regfree(&re);
3986         return (num_deleted);
3987 }
3988
3989
3990
3991 /*
3992  * Check whether the current user has permission to delete messages from
3993  * the current room (returns 1 for yes, 0 for no)
3994  */
3995 int CtdlDoIHavePermissionToDeleteMessagesFromThisRoom(void) {
3996         int ra;
3997         CtdlRoomAccess(&CC->room, &CC->user, &ra, NULL);
3998         if (ra & UA_DELETEALLOWED) return(1);
3999         return(0);
4000 }
4001
4002
4003
4004
4005 /*
4006  * Delete message from current room
4007  */
4008 void cmd_dele(char *args)
4009 {
4010         int num_deleted;
4011         int i;
4012         char msgset[SIZ];
4013         char msgtok[32];
4014         long *msgs;
4015         int num_msgs = 0;
4016
4017         extract_token(msgset, args, 0, '|', sizeof msgset);
4018         num_msgs = num_tokens(msgset, ',');
4019         if (num_msgs < 1) {
4020                 cprintf("%d Nothing to do.\n", CIT_OK);
4021                 return;
4022         }
4023
4024         if (CtdlDoIHavePermissionToDeleteMessagesFromThisRoom() == 0) {
4025                 cprintf("%d Higher access required.\n",
4026                         ERROR + HIGHER_ACCESS_REQUIRED);
4027                 return;
4028         }
4029
4030         /*
4031          * Build our message set to be moved/copied
4032          */
4033         msgs = malloc(num_msgs * sizeof(long));
4034         for (i=0; i<num_msgs; ++i) {
4035                 extract_token(msgtok, msgset, i, ',', sizeof msgtok);
4036                 msgs[i] = atol(msgtok);
4037         }
4038
4039         num_deleted = CtdlDeleteMessages(CC->room.QRname, msgs, num_msgs, "");
4040         free(msgs);
4041
4042         if (num_deleted) {
4043                 cprintf("%d %d message%s deleted.\n", CIT_OK,
4044                         num_deleted, ((num_deleted != 1) ? "s" : ""));
4045         } else {
4046                 cprintf("%d Message not found.\n", ERROR + MESSAGE_NOT_FOUND);
4047         }
4048 }
4049
4050
4051 /*
4052  * Back end API function for moves and deletes (multiple messages)
4053  */
4054 int CtdlCopyMsgsToRoom(long *msgnums, int num_msgs, char *dest) {
4055         int err;
4056
4057         err = CtdlSaveMsgPointersInRoom(dest, msgnums, num_msgs, 1, NULL);
4058         if (err != 0) return(err);
4059
4060         return(0);
4061 }
4062
4063
4064
4065
4066 /*
4067  * move or copy a message to another room
4068  */
4069 void cmd_move(char *args)
4070 {
4071         char msgset[SIZ];
4072         char msgtok[32];
4073         long *msgs;
4074         int num_msgs = 0;
4075
4076         char targ[ROOMNAMELEN];
4077         struct ctdlroom qtemp;
4078         int err;
4079         int is_copy = 0;
4080         int ra;
4081         int permit = 0;
4082         int i;
4083
4084         extract_token(msgset, args, 0, '|', sizeof msgset);
4085         num_msgs = num_tokens(msgset, ',');
4086         if (num_msgs < 1) {
4087                 cprintf("%d Nothing to do.\n", CIT_OK);
4088                 return;
4089         }
4090
4091         extract_token(targ, args, 1, '|', sizeof targ);
4092         convert_room_name_macros(targ, sizeof targ);
4093         targ[ROOMNAMELEN - 1] = 0;
4094         is_copy = extract_int(args, 2);
4095
4096         if (getroom(&qtemp, targ) != 0) {
4097                 cprintf("%d '%s' does not exist.\n",
4098                         ERROR + ROOM_NOT_FOUND, targ);
4099                 return;
4100         }
4101
4102         getuser(&CC->user, CC->curr_user);
4103         CtdlRoomAccess(&qtemp, &CC->user, &ra, NULL);
4104
4105         /* Check for permission to perform this operation.
4106          * Remember: "CC->room" is source, "qtemp" is target.
4107          */
4108         permit = 0;
4109
4110         /* Aides can move/copy */
4111         if (CC->user.axlevel >= 6) permit = 1;
4112
4113         /* Room aides can move/copy */
4114         if (CC->user.usernum == CC->room.QRroomaide) permit = 1;
4115
4116         /* Permit move/copy from personal rooms */
4117         if ((CC->room.QRflags & QR_MAILBOX)
4118            && (qtemp.QRflags & QR_MAILBOX)) permit = 1;
4119
4120         /* Permit only copy from public to personal room */
4121         if ( (is_copy)
4122            && (!(CC->room.QRflags & QR_MAILBOX))
4123            && (qtemp.QRflags & QR_MAILBOX)) permit = 1;
4124
4125         /* Permit message removal from collaborative delete rooms */
4126         if (CC->room.QRflags2 & QR2_COLLABDEL) permit = 1;
4127
4128         /* Users allowed to post into the target room may move into it too. */
4129         if ((CC->room.QRflags & QR_MAILBOX) &&
4130             (qtemp.QRflags & UA_POSTALLOWED))  permit = 1;
4131
4132         /* User must have access to target room */
4133         if (!(ra & UA_KNOWN))  permit = 0;
4134
4135         if (!permit) {
4136                 cprintf("%d Higher access required.\n",
4137                         ERROR + HIGHER_ACCESS_REQUIRED);
4138                 return;
4139         }
4140
4141         /*
4142          * Build our message set to be moved/copied
4143          */
4144         msgs = malloc(num_msgs * sizeof(long));
4145         for (i=0; i<num_msgs; ++i) {
4146                 extract_token(msgtok, msgset, i, ',', sizeof msgtok);
4147                 msgs[i] = atol(msgtok);
4148         }
4149
4150         /*
4151          * Do the copy
4152          */
4153         err = CtdlCopyMsgsToRoom(msgs, num_msgs, targ);
4154         if (err != 0) {
4155                 cprintf("%d Cannot store message(s) in %s: error %d\n",
4156                         err, targ, err);
4157                 free(msgs);
4158                 return;
4159         }
4160
4161         /* Now delete the message from the source room,
4162          * if this is a 'move' rather than a 'copy' operation.
4163          */
4164         if (is_copy == 0) {
4165                 CtdlDeleteMessages(CC->room.QRname, msgs, num_msgs, "");
4166         }
4167         free(msgs);
4168
4169         cprintf("%d Message(s) %s.\n", CIT_OK, (is_copy ? "copied" : "moved") );
4170 }
4171
4172
4173
4174 /*
4175  * GetMetaData()  -  Get the supplementary record for a message
4176  */
4177 void GetMetaData(struct MetaData *smibuf, long msgnum)
4178 {
4179
4180         struct cdbdata *cdbsmi;
4181         long TheIndex;
4182
4183         memset(smibuf, 0, sizeof(struct MetaData));
4184         smibuf->meta_msgnum = msgnum;
4185         smibuf->meta_refcount = 1;      /* Default reference count is 1 */
4186
4187         /* Use the negative of the message number for its supp record index */
4188         TheIndex = (0L - msgnum);
4189
4190         cdbsmi = cdb_fetch(CDB_MSGMAIN, &TheIndex, sizeof(long));
4191         if (cdbsmi == NULL) {
4192                 return;         /* record not found; go with defaults */
4193         }
4194         memcpy(smibuf, cdbsmi->ptr,
4195                ((cdbsmi->len > sizeof(struct MetaData)) ?
4196                 sizeof(struct MetaData) : cdbsmi->len));
4197         cdb_free(cdbsmi);
4198         return;
4199 }
4200
4201
4202 /*
4203  * PutMetaData()  -  (re)write supplementary record for a message
4204  */
4205 void PutMetaData(struct MetaData *smibuf)
4206 {
4207         long TheIndex;
4208
4209         /* Use the negative of the message number for the metadata db index */
4210         TheIndex = (0L - smibuf->meta_msgnum);
4211
4212         cdb_store(CDB_MSGMAIN,
4213                   &TheIndex, (int)sizeof(long),
4214                   smibuf, (int)sizeof(struct MetaData));
4215
4216 }
4217
4218 /*
4219  * AdjRefCount  -  submit an adjustment to the reference count for a message.
4220  *                 (These are just queued -- we actually process them later.)
4221  */
4222 void AdjRefCount(long msgnum, int incr)
4223 {
4224         struct arcq new_arcq;
4225
4226         begin_critical_section(S_SUPPMSGMAIN);
4227         if (arcfp == NULL) {
4228                 arcfp = fopen(file_arcq, "ab+");
4229         }
4230         end_critical_section(S_SUPPMSGMAIN);
4231
4232         /* msgnum < 0 means that we're trying to close the file */
4233         if (msgnum < 0) {
4234                 CtdlLogPrintf(CTDL_DEBUG, "Closing the AdjRefCount queue file\n");
4235                 begin_critical_section(S_SUPPMSGMAIN);
4236                 if (arcfp != NULL) {
4237                         fclose(arcfp);
4238                         arcfp = NULL;
4239                 }
4240                 end_critical_section(S_SUPPMSGMAIN);
4241                 return;
4242         }
4243
4244         /*
4245          * If we can't open the queue, perform the operation synchronously.
4246          */
4247         if (arcfp == NULL) {
4248                 TDAP_AdjRefCount(msgnum, incr);
4249                 return;
4250         }
4251
4252         new_arcq.arcq_msgnum = msgnum;
4253         new_arcq.arcq_delta = incr;
4254         fwrite(&new_arcq, sizeof(struct arcq), 1, arcfp);
4255         fflush(arcfp);
4256
4257         return;
4258 }
4259
4260
4261 /*
4262  * TDAP_ProcessAdjRefCountQueue()
4263  *
4264  * Process the queue of message count adjustments that was created by calls
4265  * to AdjRefCount() ... by reading the queue and calling TDAP_AdjRefCount()
4266  * for each one.  This should be an "off hours" operation.
4267  */
4268 int TDAP_ProcessAdjRefCountQueue(void)
4269 {
4270         char file_arcq_temp[PATH_MAX];
4271         int r;
4272         FILE *fp;
4273         struct arcq arcq_rec;
4274         int num_records_processed = 0;
4275
4276         snprintf(file_arcq_temp, sizeof file_arcq_temp, "%s2", file_arcq);
4277
4278         begin_critical_section(S_SUPPMSGMAIN);
4279         if (arcfp != NULL) {
4280                 fclose(arcfp);
4281                 arcfp = NULL;
4282         }
4283
4284         r = link(file_arcq, file_arcq_temp);
4285         if (r != 0) {
4286                 CtdlLogPrintf(CTDL_CRIT, "%s: %s\n", file_arcq_temp, strerror(errno));
4287                 end_critical_section(S_SUPPMSGMAIN);
4288                 return(num_records_processed);
4289         }
4290
4291         unlink(file_arcq);
4292         end_critical_section(S_SUPPMSGMAIN);
4293
4294         fp = fopen(file_arcq_temp, "rb");
4295         if (fp == NULL) {
4296                 CtdlLogPrintf(CTDL_CRIT, "%s: %s\n", file_arcq_temp, strerror(errno));
4297                 return(num_records_processed);
4298         }
4299
4300         while (fread(&arcq_rec, sizeof(struct arcq), 1, fp) == 1) {
4301                 TDAP_AdjRefCount(arcq_rec.arcq_msgnum, arcq_rec.arcq_delta);
4302                 ++num_records_processed;
4303         }
4304
4305         fclose(fp);
4306         r = unlink(file_arcq_temp);
4307         if (r != 0) {
4308                 CtdlLogPrintf(CTDL_CRIT, "%s: %s\n", file_arcq_temp, strerror(errno));
4309         }
4310
4311         return(num_records_processed);
4312 }
4313
4314
4315
4316 /*
4317  * TDAP_AdjRefCount  -  adjust the reference count for a message.
4318  *                      This one does it "for real" because it's called by
4319  *                      the autopurger function that processes the queue
4320  *                      created by AdjRefCount().   If a message's reference
4321  *                      count becomes zero, we also delete the message from
4322  *                      disk and de-index it.
4323  */
4324 void TDAP_AdjRefCount(long msgnum, int incr)
4325 {
4326
4327         struct MetaData smi;
4328         long delnum;
4329
4330         /* This is a *tight* critical section; please keep it that way, as
4331          * it may get called while nested in other critical sections.
4332          * Complicating this any further will surely cause deadlock!
4333          */
4334         begin_critical_section(S_SUPPMSGMAIN);
4335         GetMetaData(&smi, msgnum);
4336         smi.meta_refcount += incr;
4337         PutMetaData(&smi);
4338         end_critical_section(S_SUPPMSGMAIN);
4339         CtdlLogPrintf(CTDL_DEBUG, "msg %ld ref count delta %d, is now %d\n",
4340                 msgnum, incr, smi.meta_refcount);
4341
4342         /* If the reference count is now zero, delete the message
4343          * (and its supplementary record as well).
4344          */
4345         if (smi.meta_refcount == 0) {
4346                 CtdlLogPrintf(CTDL_DEBUG, "Deleting message <%ld>\n", msgnum);
4347
4348                 /* Call delete hooks with NULL room to show it has gone altogether */
4349                 PerformDeleteHooks(NULL, msgnum);
4350
4351                 /* Remove from message base */
4352                 delnum = msgnum;
4353                 cdb_delete(CDB_MSGMAIN, &delnum, (int)sizeof(long));
4354                 cdb_delete(CDB_BIGMSGS, &delnum, (int)sizeof(long));
4355
4356                 /* Remove metadata record */
4357                 delnum = (0L - msgnum);
4358                 cdb_delete(CDB_MSGMAIN, &delnum, (int)sizeof(long));
4359         }
4360
4361 }
4362
4363 /*
4364  * Write a generic object to this room
4365  *
4366  * Note: this could be much more efficient.  Right now we use two temporary
4367  * files, and still pull the message into memory as with all others.
4368  */
4369 void CtdlWriteObject(char *req_room,            /* Room to stuff it in */
4370                         char *content_type,     /* MIME type of this object */
4371                         char *tempfilename,     /* Where to fetch it from */
4372                         struct ctdluser *is_mailbox,    /* Mailbox room? */
4373                         int is_binary,          /* Is encoding necessary? */
4374                         int is_unique,          /* Del others of this type? */
4375                         unsigned int flags      /* Internal save flags */
4376                         )
4377 {
4378
4379         FILE *fp;
4380         struct ctdlroom qrbuf;
4381         char roomname[ROOMNAMELEN];
4382         struct CtdlMessage *msg;
4383
4384         char *raw_message = NULL;
4385         char *encoded_message = NULL;
4386         off_t raw_length = 0;
4387
4388         if (is_mailbox != NULL) {
4389                 MailboxName(roomname, sizeof roomname, is_mailbox, req_room);
4390         }
4391         else {
4392                 safestrncpy(roomname, req_room, sizeof(roomname));
4393         }
4394
4395         fp = fopen(tempfilename, "rb");
4396         if (fp == NULL) {
4397                 CtdlLogPrintf(CTDL_CRIT, "Cannot open %s: %s\n",
4398                         tempfilename, strerror(errno));
4399                 return;
4400         }
4401         fseek(fp, 0L, SEEK_END);
4402         raw_length = ftell(fp);
4403         rewind(fp);
4404         CtdlLogPrintf(CTDL_DEBUG, "Raw length is %ld\n", (long)raw_length);
4405
4406         raw_message = malloc((size_t)raw_length + 2);
4407         fread(raw_message, (size_t)raw_length, 1, fp);
4408         fclose(fp);
4409
4410         if (is_binary) {
4411                 encoded_message = malloc((size_t)
4412                         (((raw_length * 134) / 100) + 4096 ) );
4413         }
4414         else {
4415                 encoded_message = malloc((size_t)(raw_length + 4096));
4416         }
4417
4418         sprintf(encoded_message, "Content-type: %s\n", content_type);
4419
4420         if (is_binary) {
4421                 sprintf(&encoded_message[strlen(encoded_message)],
4422                         "Content-transfer-encoding: base64\n\n"
4423                 );
4424         }
4425         else {
4426                 sprintf(&encoded_message[strlen(encoded_message)],
4427                         "Content-transfer-encoding: 7bit\n\n"
4428                 );
4429         }
4430
4431         if (is_binary) {
4432                 CtdlEncodeBase64(
4433                         &encoded_message[strlen(encoded_message)],
4434                         raw_message,
4435                         (int)raw_length,
4436                         0
4437                 );
4438         }
4439         else {
4440                 raw_message[raw_length] = 0;
4441                 memcpy(
4442                         &encoded_message[strlen(encoded_message)],
4443                         raw_message,
4444                         (int)(raw_length+1)
4445                 );
4446         }
4447
4448         free(raw_message);
4449
4450         CtdlLogPrintf(CTDL_DEBUG, "Allocating\n");
4451         msg = malloc(sizeof(struct CtdlMessage));
4452         memset(msg, 0, sizeof(struct CtdlMessage));
4453         msg->cm_magic = CTDLMESSAGE_MAGIC;
4454         msg->cm_anon_type = MES_NORMAL;
4455         msg->cm_format_type = 4;
4456         msg->cm_fields['A'] = strdup(CC->user.fullname);
4457         msg->cm_fields['O'] = strdup(req_room);
4458         msg->cm_fields['N'] = strdup(config.c_nodename);
4459         msg->cm_fields['H'] = strdup(config.c_humannode);
4460         msg->cm_flags = flags;
4461
4462         msg->cm_fields['M'] = encoded_message;
4463
4464         /* Create the requested room if we have to. */
4465         if (getroom(&qrbuf, roomname) != 0) {
4466                 create_room(roomname,
4467                         ( (is_mailbox != NULL) ? 5 : 3 ),
4468                         "", 0, 1, 0, VIEW_BBS);
4469         }
4470         /* If the caller specified this object as unique, delete all
4471          * other objects of this type that are currently in the room.
4472          */
4473         if (is_unique) {
4474                 CtdlLogPrintf(CTDL_DEBUG, "Deleted %d other msgs of this type\n",
4475                         CtdlDeleteMessages(roomname, NULL, 0, content_type)
4476                 );
4477         }
4478         /* Now write the data */
4479         CtdlSubmitMsg(msg, NULL, roomname);
4480         CtdlFreeMessage(msg);
4481 }
4482
4483
4484
4485
4486
4487
4488 void CtdlGetSysConfigBackend(long msgnum, void *userdata) {
4489         config_msgnum = msgnum;
4490 }
4491
4492
4493 char *CtdlGetSysConfig(char *sysconfname) {
4494         char hold_rm[ROOMNAMELEN];
4495         long msgnum;
4496         char *conf;
4497         struct CtdlMessage *msg;
4498         char buf[SIZ];
4499
4500         strcpy(hold_rm, CC->room.QRname);
4501         if (getroom(&CC->room, SYSCONFIGROOM) != 0) {
4502                 getroom(&CC->room, hold_rm);
4503                 return NULL;
4504         }
4505
4506
4507         /* We want the last (and probably only) config in this room */
4508         begin_critical_section(S_CONFIG);
4509         config_msgnum = (-1L);
4510         CtdlForEachMessage(MSGS_LAST, 1, NULL, sysconfname, NULL,
4511                 CtdlGetSysConfigBackend, NULL);
4512         msgnum = config_msgnum;
4513         end_critical_section(S_CONFIG);
4514
4515         if (msgnum < 0L) {
4516                 conf = NULL;
4517         }
4518         else {
4519                 msg = CtdlFetchMessage(msgnum, 1);
4520                 if (msg != NULL) {
4521                         conf = strdup(msg->cm_fields['M']);
4522                         CtdlFreeMessage(msg);
4523                 }
4524                 else {
4525                         conf = NULL;
4526                 }
4527         }
4528
4529         getroom(&CC->room, hold_rm);
4530
4531         if (conf != NULL) do {
4532                 extract_token(buf, conf, 0, '\n', sizeof buf);
4533                 strcpy(conf, &conf[strlen(buf)+1]);
4534         } while ( (!IsEmptyStr(conf)) && (!IsEmptyStr(buf)) );
4535
4536         return(conf);
4537 }
4538
4539 void CtdlPutSysConfig(char *sysconfname, char *sysconfdata) {
4540         char temp[PATH_MAX];
4541         FILE *fp;
4542
4543         CtdlMakeTempFileName(temp, sizeof temp);
4544
4545         fp = fopen(temp, "w");
4546         if (fp == NULL) return;
4547         fprintf(fp, "%s", sysconfdata);
4548         fclose(fp);
4549
4550         /* this handy API function does all the work for us */
4551         CtdlWriteObject(SYSCONFIGROOM, sysconfname, temp, NULL, 0, 1, 0);
4552         unlink(temp);
4553 }
4554
4555
4556 /*
4557  * Determine whether a given Internet address belongs to the current user
4558  */
4559 int CtdlIsMe(char *addr, int addr_buf_len)
4560 {
4561         struct recptypes *recp;
4562         int i;
4563
4564         recp = validate_recipients(addr, NULL, 0);
4565         if (recp == NULL) return(0);
4566
4567         if (recp->num_local == 0) {
4568                 free_recipients(recp);
4569                 return(0);
4570         }
4571
4572         for (i=0; i<recp->num_local; ++i) {
4573                 extract_token(addr, recp->recp_local, i, '|', addr_buf_len);
4574                 if (!strcasecmp(addr, CC->user.fullname)) {
4575                         free_recipients(recp);
4576                         return(1);
4577                 }
4578         }
4579
4580         free_recipients(recp);
4581         return(0);
4582 }
4583
4584
4585 /*
4586  * Citadel protocol command to do the same
4587  */
4588 void cmd_isme(char *argbuf) {
4589         char addr[256];
4590
4591         if (CtdlAccessCheck(ac_logged_in)) return;
4592         extract_token(addr, argbuf, 0, '|', sizeof addr);
4593
4594         if (CtdlIsMe(addr, sizeof addr)) {
4595                 cprintf("%d %s\n", CIT_OK, addr);
4596         }
4597         else {
4598                 cprintf("%d Not you.\n", ERROR + ILLEGAL_VALUE);
4599         }
4600
4601 }