citadel/room_ops.c

   1 /*
   2  * Server functions which perform operations on room objects.
   3  *
   4  * Copyright (c) 1987-2016 by the citadel.org team
   5  *
   6  * This program is open source software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License, version 3.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  */
  14
  15 #include <stdio.h>
  16 #include <libcitadel.h>
  17
  18 #include "citserver.h"
  19 #include "ctdl_module.h"
  20 #include "config.h"
  21 #include "control.h"
  22 #include "user_ops.h"
  23 #include "room_ops.h"
  24
  25 struct floor *floorcache[MAXFLOORS];
  26
  27 /*
  28  * Determine whether the currently logged in session has permission to read
  29  * messages in the current room.
  30  */
  31 int CtdlDoIHavePermissionToReadMessagesInThisRoom(void) {
  32         if (    (!(CC->logged_in))
  33                 && (!(CC->internal_pgm))
  34                 && (!CtdlGetConfigInt("c_guest_logins"))
  35         ) {
  36                 return(om_not_logged_in);
  37         }
  38         return(om_ok);
  39 }
  40
  41 /*
  42  * Check to see whether we have permission to post a message in the current
  43  * room.  Returns a *CITADEL ERROR CODE* and puts a message in errmsgbuf, or
  44  * returns 0 on success.
  45  */
  46 int CtdlDoIHavePermissionToPostInThisRoom(
  47         char *errmsgbuf,
  48         size_t n,
  49         const char* RemoteIdentifier,
  50         PostType PostPublic,
  51         int is_reply
  52         ) {
  53         int ra;
  54
  55         if (!(CC->logged_in) &&
  56             (PostPublic == POST_LOGGED_IN)) {
  57                 snprintf(errmsgbuf, n, "Not logged in.");
  58                 return (ERROR + NOT_LOGGED_IN);
  59         }
  60         else if (PostPublic == CHECK_EXISTANCE) {
  61                 return (0); // We're Evaling whether a recipient exists
  62         }
  63         else if (!(CC->logged_in)) {
  64
  65                 if ((CC->room.QRflags & QR_READONLY)) {
  66                         snprintf(errmsgbuf, n, "Not logged in.");
  67                         return (ERROR + NOT_LOGGED_IN);
  68                 }
  69                 if (CC->room.QRflags2 & QR2_MODERATED) {
  70                         snprintf(errmsgbuf, n, "Not logged in Moderation feature not yet implemented!");
  71                         return (ERROR + NOT_LOGGED_IN);
  72                 }
  73                 if ((PostPublic!=POST_LMTP) &&(CC->room.QRflags2 & QR2_SMTP_PUBLIC) == 0) {
  74
  75                         return CtdlNetconfigCheckRoomaccess(errmsgbuf, n, RemoteIdentifier);
  76                 }
  77                 return (0);
  78
  79         }
  80
  81         if ((CC->user.axlevel < AxProbU) && ((CC->room.QRflags & QR_MAILBOX) == 0))
  82         {
  83                 snprintf(errmsgbuf, n, "Need to be validated to enter (except in %s> to sysop)", MAILROOM);
  84                 return (ERROR + HIGHER_ACCESS_REQUIRED);
  85         }
  86
  87         CtdlRoomAccess(&CC->room, &CC->user, &ra, NULL);
  88
  89         if (ra & UA_POSTALLOWED) {
  90                 strcpy(errmsgbuf, "OK to post or reply here");
  91                 return(0);
  92         }
  93
  94         if ( (ra & UA_REPLYALLOWED) && (is_reply) ) {
  95                 /*
  96                  * To be thorough, we ought to check to see if the message they are
  97                  * replying to is actually a valid one in this room, but unless this
  98                  * actually becomes a problem we'll go with high performance instead.
  99                  */
 100                 strcpy(errmsgbuf, "OK to reply here");
 101                 return(0);
 102         }
 103
 104         if ( (ra & UA_REPLYALLOWED) && (!is_reply) ) {
 105                 /* Clarify what happened with a better error message */
 106                 snprintf(errmsgbuf, n, "You may only reply to existing messages here.");
 107                 return (ERROR + HIGHER_ACCESS_REQUIRED);
 108         }
 109
 110         snprintf(errmsgbuf, n, "Higher access is required to post in this room.");
 111         return (ERROR + HIGHER_ACCESS_REQUIRED);
 112
 113 }
 114
 115 /*
 116  * Check whether the current user has permission to delete messages from
 117  * the current room (returns 1 for yes, 0 for no)
 118  */
 119 int CtdlDoIHavePermissionToDeleteMessagesFromThisRoom(void) {
 120         int ra;
 121         CtdlRoomAccess(&CC->room, &CC->user, &ra, NULL);
 122         if (ra & UA_DELETEALLOWED) return(1);
 123         return(0);
 124 }
 125
 126 /*
 127  * Retrieve access control information for any user/room pair.
 128  * Yes, it has a couple of gotos.  If you don't like that, go die in a car fire.
 129  */
 130 void CtdlRoomAccess(struct ctdlroom *roombuf, struct ctdluser *userbuf,
 131                 int *result, int *view)
 132 {
 133         int retval = 0;
 134         visit vbuf;
 135         int is_me = 0;
 136         int is_guest = 0;
 137
 138         if (userbuf == &CC->user) {
 139                 is_me = 1;
 140         }
 141
 142         if ((is_me) && (CtdlGetConfigInt("c_guest_logins")) && (!CC->logged_in)) {
 143                 is_guest = 1;
 144         }
 145
 146         /* for internal programs, always do everything */
 147         if (((CC->internal_pgm)) && (roombuf->QRflags & QR_INUSE)) {
 148                 retval = (UA_KNOWN | UA_GOTOALLOWED | UA_POSTALLOWED | UA_DELETEALLOWED | UA_REPLYALLOWED);
 149                 vbuf.v_view = 0;
 150                 goto SKIP_EVERYTHING;
 151         }
 152
 153         /* If guest mode is enabled, always grant access to the Lobby */
 154         if ((is_guest) && (!strcasecmp(roombuf->QRname, BASEROOM))) {
 155                 retval = (UA_KNOWN | UA_GOTOALLOWED);
 156                 vbuf.v_view = 0;
 157                 goto SKIP_EVERYTHING;
 158         }
 159
 160         /* Locate any applicable user/room relationships */
 161         if (is_guest) {
 162                 memset(&vbuf, 0, sizeof vbuf);
 163         }
 164         else {
 165                 CtdlGetRelationship(&vbuf, userbuf, roombuf);
 166         }
 167
 168         /* Force the properties of the Aide room */
 169         if (!strcasecmp(roombuf->QRname, CtdlGetConfigStr("c_aideroom"))) {
 170                 if (userbuf->axlevel >= AxAideU) {
 171                         retval = UA_KNOWN | UA_GOTOALLOWED | UA_POSTALLOWED | UA_DELETEALLOWED | UA_REPLYALLOWED;
 172                 } else {
 173                         retval = 0;
 174                 }
 175                 goto NEWMSG;
 176         }
 177
 178         /* If this is a public room, it's accessible... */
 179         if (    ((roombuf->QRflags & QR_PRIVATE) == 0)
 180                 && ((roombuf->QRflags & QR_MAILBOX) == 0)
 181         ) {
 182                 retval = retval | UA_KNOWN | UA_GOTOALLOWED;
 183         }
 184
 185         /* If this is a preferred users only room, check access level */
 186         if (roombuf->QRflags & QR_PREFONLY) {
 187                 if (userbuf->axlevel < AxPrefU) {
 188                         retval = retval & ~UA_KNOWN & ~UA_GOTOALLOWED;
 189                 }
 190         }
 191
 192         /* For private rooms, check the generation number matchups */
 193         if (    (roombuf->QRflags & QR_PRIVATE)
 194                 && ((roombuf->QRflags & QR_MAILBOX) == 0)
 195         ) {
 196
 197                 /* An explicit match means the user belongs in this room */
 198                 if (vbuf.v_flags & V_ACCESS) {
 199                         retval = retval | UA_KNOWN | UA_GOTOALLOWED;
 200                 }
 201                 /* Otherwise, check if this is a guess-name or passworded
 202                  * room.  If it is, a goto may at least be attempted
 203                  */
 204                 else if (       (roombuf->QRflags & QR_PRIVATE)
 205                                 || (roombuf->QRflags & QR_PASSWORDED)
 206                 ) {
 207                         retval = retval & ~UA_KNOWN;
 208                         retval = retval | UA_GOTOALLOWED;
 209                 }
 210         }
 211
 212         /* For mailbox rooms, also check the namespace */
 213         /* Also, mailbox owners can delete their messages */
 214         if ( (roombuf->QRflags & QR_MAILBOX) && (atol(roombuf->QRname) != 0)) {
 215                 if (userbuf->usernum == atol(roombuf->QRname)) {
 216                         retval = retval | UA_KNOWN | UA_GOTOALLOWED | UA_POSTALLOWED | UA_DELETEALLOWED | UA_REPLYALLOWED;
 217                 }
 218                 /* An explicit match means the user belongs in this room */
 219                 if (vbuf.v_flags & V_ACCESS) {
 220                         retval = retval | UA_KNOWN | UA_GOTOALLOWED | UA_POSTALLOWED | UA_DELETEALLOWED | UA_REPLYALLOWED;
 221                 }
 222         }
 223
 224         /* For non-mailbox rooms... */
 225         else {
 226
 227                 /* User is allowed to post in the room unless:
 228                  * - User is not validated
 229                  * - User has no net privileges and it is a shared network room
 230                  * - It is a read-only room
 231                  * - It is a blog room (in which case we only allow replies to existing messages)
 232                  */
 233                 int post_allowed = 1;
 234                 int reply_allowed = 1;
 235                 if (userbuf->axlevel < AxProbU) {
 236                         post_allowed = 0;
 237                         reply_allowed = 0;
 238                 }
 239                 if ((userbuf->axlevel < AxNetU) && (roombuf->QRflags & QR_NETWORK)) {
 240                         post_allowed = 0;
 241                         reply_allowed = 0;
 242                 }
 243                 if (roombuf->QRflags & QR_READONLY) {
 244                         post_allowed = 0;
 245                         reply_allowed = 0;
 246                 }
 247                 if (roombuf->QRdefaultview == VIEW_BLOG) {
 248                         post_allowed = 0;
 249                 }
 250                 if (post_allowed) {
 251                         retval = retval | UA_POSTALLOWED | UA_REPLYALLOWED;
 252                 }
 253                 if (reply_allowed) {
 254                         retval = retval | UA_REPLYALLOWED;
 255                 }
 256
 257                 /* If "collaborative deletion" is active for this room, any user who can post
 258                  * is also allowed to delete
 259                  */
 260                 if (roombuf->QRflags2 & QR2_COLLABDEL) {
 261                         if (retval & UA_POSTALLOWED) {
 262                                 retval = retval | UA_DELETEALLOWED;
 263                         }
 264                 }
 265
 266         }
 267
 268         /* Check to see if the user has forgotten this room */
 269         if (vbuf.v_flags & V_FORGET) {
 270                 retval = retval & ~UA_KNOWN;
 271                 if (    ( ((roombuf->QRflags & QR_PRIVATE) == 0)
 272                         && ((roombuf->QRflags & QR_MAILBOX) == 0)
 273                 ) || (  (roombuf->QRflags & QR_MAILBOX)
 274                         && (atol(roombuf->QRname) == CC->user.usernum))
 275                 ) {
 276                         retval = retval | UA_ZAPPED;
 277                 }
 278         }
 279
 280         /* If user is explicitly locked out of this room, deny everything */
 281         if (vbuf.v_flags & V_LOCKOUT) {
 282                 retval = retval & ~UA_KNOWN & ~UA_GOTOALLOWED & ~UA_POSTALLOWED & ~UA_REPLYALLOWED;
 283         }
 284
 285         /* Aides get access to all private rooms */
 286         if (    (userbuf->axlevel >= AxAideU)
 287                 && ((roombuf->QRflags & QR_MAILBOX) == 0)
 288         ) {
 289                 if (vbuf.v_flags & V_FORGET) {
 290                         retval = retval | UA_GOTOALLOWED | UA_POSTALLOWED | UA_REPLYALLOWED;
 291                 }
 292                 else {
 293                         retval = retval | UA_KNOWN | UA_GOTOALLOWED | UA_POSTALLOWED | UA_REPLYALLOWED;
 294                 }
 295         }
 296
 297         /* Aides can gain access to mailboxes as well, but they don't show
 298          * by default.
 299          */
 300         if (    (userbuf->axlevel >= AxAideU)
 301                 && (roombuf->QRflags & QR_MAILBOX)
 302         ) {
 303                 retval = retval | UA_GOTOALLOWED | UA_POSTALLOWED | UA_REPLYALLOWED;
 304         }
 305
 306         /* Aides and Room Aides have admin privileges */
 307         if (    (userbuf->axlevel >= AxAideU)
 308                 || (userbuf->usernum == roombuf->QRroomaide)
 309         ) {
 310                 retval = retval | UA_ADMINALLOWED | UA_DELETEALLOWED | UA_POSTALLOWED | UA_REPLYALLOWED;
 311         }
 312
 313 NEWMSG: /* By the way, we also check for the presence of new messages */
 314         if (is_msg_in_sequence_set(vbuf.v_seen, roombuf->QRhighest) == 0) {
 315                 retval = retval | UA_HASNEWMSGS;
 316         }
 317
 318         /* System rooms never show up in the list. */
 319         if (roombuf->QRflags2 & QR2_SYSTEM) {
 320                 retval = retval & ~UA_KNOWN;
 321         }
 322
 323 SKIP_EVERYTHING:
 324         /* Now give the caller the information it wants. */
 325         if (result != NULL) *result = retval;
 326         if (view != NULL) *view = vbuf.v_view;
 327 }
 328
 329
 330 /*
 331  * Self-checking stuff for a room record read into memory
 332  */
 333 void room_sanity_check(struct ctdlroom *qrbuf)
 334 {
 335         /* Mailbox rooms are always on the lowest floor */
 336         if (qrbuf->QRflags & QR_MAILBOX) {
 337                 qrbuf->QRfloor = 0;
 338         }
 339         /* Listing order of 0 is illegal except for base rooms */
 340         if (qrbuf->QRorder == 0)
 341                 if (    !(qrbuf->QRflags & QR_MAILBOX)
 342                         && strncasecmp(qrbuf->QRname, CtdlGetConfigStr("c_baseroom"), ROOMNAMELEN)
 343                         && strncasecmp(qrbuf->QRname, CtdlGetConfigStr("c_aideroom"), ROOMNAMELEN)
 344                 ) {
 345                         qrbuf->QRorder = 64;
 346                 }
 347 }
 348
 349
 350 /*
 351  * CtdlGetRoom()  -  retrieve room data from disk
 352  */
 353 int CtdlGetRoom(struct ctdlroom *qrbuf, const char *room_name)
 354 {
 355         struct cdbdata *cdbqr;
 356         char lowercase_name[ROOMNAMELEN];
 357         char personal_lowercase_name[ROOMNAMELEN];
 358         const char *sptr;
 359         char *dptr, *eptr;
 360
 361         dptr = lowercase_name;
 362         sptr = room_name;
 363         eptr = (dptr + (sizeof lowercase_name - 1));
 364         while (!IsEmptyStr(sptr) && (dptr < eptr)){
 365                 *dptr = tolower(*sptr);
 366                 sptr++; dptr++;
 367         }
 368         *dptr = '\0';
 369
 370         memset(qrbuf, 0, sizeof(struct ctdlroom));
 371
 372         /* First, try the public namespace */
 373         cdbqr = cdb_fetch(CDB_ROOMS,
 374                           lowercase_name, strlen(lowercase_name));
 375
 376         /* If that didn't work, try the user's personal namespace */
 377         if (cdbqr == NULL) {
 378                 snprintf(personal_lowercase_name,
 379                          sizeof personal_lowercase_name, "%010ld.%s",
 380                          CC->user.usernum, lowercase_name);
 381                 cdbqr = cdb_fetch(CDB_ROOMS,
 382                                   personal_lowercase_name,
 383                                   strlen(personal_lowercase_name));
 384         }
 385         if (cdbqr != NULL) {
 386                 memcpy(qrbuf, cdbqr->ptr,
 387                        ((cdbqr->len > sizeof(struct ctdlroom)) ?
 388                         sizeof(struct ctdlroom) : cdbqr->len));
 389                 cdb_free(cdbqr);
 390
 391                 room_sanity_check(qrbuf);
 392
 393                 return (0);
 394         } else {
 395                 return (1);
 396         }
 397 }
 398
 399
 400 /*
 401  * CtdlGetRoomLock()  -  same as getroom() but locks the record (if supported)
 402  */
 403 int CtdlGetRoomLock(struct ctdlroom *qrbuf, const char *room_name)
 404 {
 405         register int retval;
 406         retval = CtdlGetRoom(qrbuf, room_name);
 407         if (retval == 0) begin_critical_section(S_ROOMS);
 408         return(retval);
 409 }
 410
 411
 412 /*
 413  * b_putroom()  -  back end to putroom() and b_deleteroom()
 414  *              (if the supplied buffer is NULL, delete the room record)
 415  */
 416 void b_putroom(struct ctdlroom *qrbuf, char *room_name)
 417 {
 418         char lowercase_name[ROOMNAMELEN];
 419         char *aptr, *bptr;
 420         long len;
 421
 422         aptr = room_name;
 423         bptr = lowercase_name;
 424         while (!IsEmptyStr(aptr))
 425         {
 426                 *bptr = tolower(*aptr);
 427                 aptr++;
 428                 bptr++;
 429         }
 430         *bptr='\0';
 431
 432         len = bptr - lowercase_name;
 433         if (qrbuf == NULL) {
 434                 cdb_delete(CDB_ROOMS, lowercase_name, len);
 435         } else {
 436                 time(&qrbuf->QRmtime);
 437                 cdb_store(CDB_ROOMS, lowercase_name, len, qrbuf, sizeof(struct ctdlroom));
 438         }
 439 }
 440
 441
 442 /*
 443  * CtdlPutRoom()  -  store room data to disk
 444  */
 445 void CtdlPutRoom(struct ctdlroom *qrbuf) {
 446         b_putroom(qrbuf, qrbuf->QRname);
 447 }
 448
 449
 450 /*
 451  * b_deleteroom()  -  delete a room record from disk
 452  */
 453 void b_deleteroom(char *room_name) {
 454         b_putroom(NULL, room_name);
 455 }
 456
 457
 458 /*
 459  * CtdlPutRoomLock()  -  same as CtdlPutRoom() but unlocks the record (if supported)
 460  */
 461 void CtdlPutRoomLock(struct ctdlroom *qrbuf)
 462 {
 463         CtdlPutRoom(qrbuf);
 464         end_critical_section(S_ROOMS);
 465 }
 466
 467
 468 /*
 469  * CtdlGetFloorByName()  -  retrieve the number of the named floor
 470  * return < 0 if not found else return floor number
 471  */
 472 int CtdlGetFloorByName(const char *floor_name)
 473 {
 474         int a;
 475         struct floor *flbuf = NULL;
 476
 477         for (a = 0; a < MAXFLOORS; ++a) {
 478                 flbuf = CtdlGetCachedFloor(a);
 479
 480                 /* check to see if it already exists */
 481                 if ((!strcasecmp(flbuf->f_name, floor_name))
 482                     && (flbuf->f_flags & F_INUSE)) {
 483                         return a;
 484                 }
 485         }
 486         return -1;
 487 }
 488
 489
 490 /*
 491  * CtdlGetFloorByNameLock()  -  retrieve floor number for given floor and lock the floor list.
 492  */
 493 int CtdlGetFloorByNameLock(const char *floor_name)
 494 {
 495         begin_critical_section(S_FLOORTAB);
 496         return CtdlGetFloorByName(floor_name);
 497 }
 498
 499
 500
 501 /*
 502  * CtdlGetAvailableFloor()  -  Return number of first unused floor
 503  * return < 0 if none available
 504  */
 505 int CtdlGetAvailableFloor(void)
 506 {
 507         int a;
 508         struct floor *flbuf = NULL;
 509
 510         for (a = 0; a < MAXFLOORS; a++) {
 511                 flbuf = CtdlGetCachedFloor(a);
 512
 513                 /* check to see if it already exists */
 514                 if ((flbuf->f_flags & F_INUSE) == 0) {
 515                         return a;
 516                 }
 517         }
 518         return -1;
 519 }
 520
 521
 522 /*
 523  * CtdlGetFloor()  -  retrieve floor data from disk
 524  */
 525 void CtdlGetFloor(struct floor *flbuf, int floor_num)
 526 {
 527         struct cdbdata *cdbfl;
 528
 529         memset(flbuf, 0, sizeof(struct floor));
 530         cdbfl = cdb_fetch(CDB_FLOORTAB, &floor_num, sizeof(int));
 531         if (cdbfl != NULL) {
 532                 memcpy(flbuf, cdbfl->ptr,
 533                        ((cdbfl->len > sizeof(struct floor)) ?
 534                         sizeof(struct floor) : cdbfl->len));
 535                 cdb_free(cdbfl);
 536         } else {
 537                 if (floor_num == 0) {
 538                         safestrncpy(flbuf->f_name, "Main Floor",
 539                                 sizeof flbuf->f_name);
 540                         flbuf->f_flags = F_INUSE;
 541                         flbuf->f_ref_count = 3;
 542                 }
 543         }
 544
 545 }
 546
 547
 548 /*
 549  * lgetfloor()  -  same as CtdlGetFloor() but locks the record (if supported)
 550  */
 551 void lgetfloor(struct floor *flbuf, int floor_num)
 552 {
 553         begin_critical_section(S_FLOORTAB);
 554         CtdlGetFloor(flbuf, floor_num);
 555 }
 556
 557
 558 /*
 559  * CtdlGetCachedFloor()  -  Get floor record from *cache* (loads from disk if needed)
 560  *
 561  * This is strictly a performance hack.
 562  */
 563 struct floor *CtdlGetCachedFloor(int floor_num) {
 564         static int initialized = 0;
 565         int i;
 566         int fetch_new = 0;
 567         struct floor *fl = NULL;
 568
 569         begin_critical_section(S_FLOORCACHE);
 570         if (initialized == 0) {
 571                 for (i=0; i<MAXFLOORS; ++i) {
 572                         floorcache[floor_num] = NULL;
 573                 }
 574         initialized = 1;
 575         }
 576         if (floorcache[floor_num] == NULL) {
 577                 fetch_new = 1;
 578         }
 579         end_critical_section(S_FLOORCACHE);
 580
 581         if (fetch_new) {
 582                 fl = malloc(sizeof(struct floor));
 583                 CtdlGetFloor(fl, floor_num);
 584                 begin_critical_section(S_FLOORCACHE);
 585                 if (floorcache[floor_num] != NULL) {
 586                         free(floorcache[floor_num]);
 587                 }
 588                 floorcache[floor_num] = fl;
 589                 end_critical_section(S_FLOORCACHE);
 590         }
 591
 592         return(floorcache[floor_num]);
 593 }
 594
 595
 596 /*
 597  * CtdlPutFloor()  -  store floor data on disk
 598  */
 599 void CtdlPutFloor(struct floor *flbuf, int floor_num)
 600 {
 601         /* If we've cached this, clear it out, 'cuz it's WRONG now! */
 602         begin_critical_section(S_FLOORCACHE);
 603         if (floorcache[floor_num] != NULL) {
 604                 free(floorcache[floor_num]);
 605                 floorcache[floor_num] = malloc(sizeof(struct floor));
 606                 memcpy(floorcache[floor_num], flbuf, sizeof(struct floor));
 607         }
 608         end_critical_section(S_FLOORCACHE);
 609
 610         cdb_store(CDB_FLOORTAB, &floor_num, sizeof(int),
 611                   flbuf, sizeof(struct floor));
 612 }
 613
 614
 615 /*
 616  * CtdlPutFloorLock()  -  same as CtdlPutFloor() but unlocks the record (if supported)
 617  */
 618 void CtdlPutFloorLock(struct floor *flbuf, int floor_num)
 619 {
 620         CtdlPutFloor(flbuf, floor_num);
 621         end_critical_section(S_FLOORTAB);
 622
 623 }
 624
 625
 626 /*
 627  * lputfloor()  -  same as CtdlPutFloor() but unlocks the record (if supported)
 628  */
 629 void lputfloor(struct floor *flbuf, int floor_num)
 630 {
 631         CtdlPutFloorLock(flbuf, floor_num);
 632 }
 633
 634
 635 /*
 636  * Iterate through the room table, performing a callback for each room.
 637  */
 638 void CtdlForEachRoom(ForEachRoomCallBack CB, void *in_data)
 639 {
 640         struct ctdlroom qrbuf;
 641         struct cdbdata *cdbqr;
 642
 643         cdb_rewind(CDB_ROOMS);
 644
 645         while (cdbqr = cdb_next_item(CDB_ROOMS), cdbqr != NULL) {
 646                 memset(&qrbuf, 0, sizeof(struct ctdlroom));
 647                 memcpy(&qrbuf, cdbqr->ptr,
 648                        ((cdbqr->len > sizeof(struct ctdlroom)) ?
 649                         sizeof(struct ctdlroom) : cdbqr->len)
 650                 );
 651                 cdb_free(cdbqr);
 652                 room_sanity_check(&qrbuf);
 653                 if (qrbuf.QRflags & QR_INUSE) {
 654                         CB(&qrbuf, in_data);
 655                 }
 656         }
 657 }
 658
 659 /*
 660  * Iterate through the room table, performing a callback for each room that has a netconfig entry.
 661  */
 662 void CtdlForEachNetCfgRoom(ForEachRoomNetCfgCallBack CB, void *in_data)
 663 {
 664         struct ctdlroom qrbuf;
 665         struct cdbdata *cdbqr;
 666
 667         cdb_rewind(CDB_ROOMS);
 668
 669         while (cdbqr = cdb_next_item(CDB_ROOMS), cdbqr != NULL) {
 670                 memset(&qrbuf, 0, sizeof(struct ctdlroom));
 671                 memcpy(&qrbuf, cdbqr->ptr, ((cdbqr->len > sizeof(struct ctdlroom)) ?  sizeof(struct ctdlroom) : cdbqr->len));
 672                 cdb_free(cdbqr);
 673                 room_sanity_check(&qrbuf);
 674                 if (qrbuf.QRflags & QR_INUSE)
 675                 {
 676                         OneRoomNetCfg *RNCfg;
 677                         RNCfg = CtdlGetNetCfgForRoom(qrbuf.QRnumber);
 678                         if (RNCfg != NULL)
 679                         {
 680                                 CB(&qrbuf, in_data, RNCfg);
 681                                 FreeRoomNetworkStruct(&RNCfg);
 682                         }
 683                 }
 684         }
 685 }
 686
 687
 688 /*
 689  * delete_msglist()  -  delete room message pointers
 690  */
 691 void delete_msglist(struct ctdlroom *whichroom)
 692 {
 693         struct cdbdata *cdbml;
 694
 695         /* Make sure the msglist we're deleting actually exists, otherwise
 696          * libdb will complain when we try to delete an invalid record
 697          */
 698         cdbml = cdb_fetch(CDB_MSGLISTS, &whichroom->QRnumber, sizeof(long));
 699         if (cdbml != NULL) {
 700                 cdb_free(cdbml);
 701
 702                 /* Go ahead and delete it */
 703                 cdb_delete(CDB_MSGLISTS, &whichroom->QRnumber, sizeof(long));
 704         }
 705 }
 706
 707
 708 /*
 709  * Message pointer compare function for sort_msglist()
 710  */
 711 int sort_msglist_cmp(const void *m1, const void *m2) {
 712         if ((*(const long *)m1) > (*(const long *)m2)) return(1);
 713         if ((*(const long *)m1) < (*(const long *)m2)) return(-1);
 714         return(0);
 715 }
 716
 717
 718 /*
 719  * sort message pointers
 720  * (returns new msg count)
 721  */
 722 int sort_msglist(long listptrs[], int oldcount)
 723 {
 724         int numitems;
 725         int i = 0;
 726
 727         numitems = oldcount;
 728         if (numitems < 2) {
 729                 return (oldcount);
 730         }
 731
 732         /* do the sort */
 733         qsort(listptrs, numitems, sizeof(long), sort_msglist_cmp);
 734
 735         /* and yank any nulls */
 736         while ((i < numitems) && (listptrs[i] == 0L)) i++;
 737
 738         if (i > 0)
 739         {
 740                 memmove(&listptrs[0], &listptrs[i], (sizeof(long) * (numitems - i)));
 741                 numitems-=i;
 742         }
 743
 744         return (numitems);
 745 }
 746
 747
 748 /*
 749  * Determine whether a given room is non-editable.
 750  */
 751 int CtdlIsNonEditable(struct ctdlroom *qrbuf)
 752 {
 753
 754         /* Mail> rooms are non-editable */
 755         if ( (qrbuf->QRflags & QR_MAILBOX)
 756              && (!strcasecmp(&qrbuf->QRname[11], MAILROOM)) )
 757                 return (1);
 758
 759         /* Everything else is editable */
 760         return (0);
 761 }
 762
 763
 764
 765 /*
 766  * Make the specified room the current room for this session.  No validation
 767  * or access control is done here -- the caller should make sure that the
 768  * specified room exists and is ok to access.
 769  */
 770 void CtdlUserGoto(char *where, int display_result, int transiently,
 771                 int *retmsgs, int *retnew, long *retoldest, long *retnewest)
 772 {
 773         struct CitContext *CCC = CC;
 774         int a;
 775         int new_messages = 0;
 776         int old_messages = 0;
 777         int total_messages = 0;
 778         long oldest_message = 0;
 779         long newest_message = 0;
 780         int info = 0;
 781         int rmailflag;
 782         int raideflag;
 783         int newmailcount = 0;
 784         visit vbuf;
 785         char truncated_roomname[ROOMNAMELEN];
 786         struct cdbdata *cdbfr;
 787         long *msglist = NULL;
 788         int num_msgs = 0;
 789         unsigned int original_v_flags;
 790         int num_sets;
 791         int s;
 792         char setstr[128], lostr[64], histr[64];
 793         long lo, hi;
 794         int is_trash = 0;
 795
 796         /* If the supplied room name is NULL, the caller wants us to know that
 797          * it has already copied the room record into CC->room, so
 798          * we can skip the extra database fetch.
 799          */
 800         if (where != NULL) {
 801                 safestrncpy(CCC->room.QRname, where, sizeof CCC->room.QRname);
 802                 CtdlGetRoom(&CCC->room, where);
 803         }
 804
 805         /* Take care of all the formalities. */
 806
 807         begin_critical_section(S_USERS);
 808         CtdlGetRelationship(&vbuf, &CCC->user, &CCC->room);
 809         original_v_flags = vbuf.v_flags;
 810
 811         /* Know the room ... but not if it's the page log room, or if the
 812          * caller specified that we're only entering this room transiently.
 813          */
 814         if ((strcasecmp(CCC->room.QRname, CtdlGetConfigStr("c_logpages"))) && (transiently == 0))
 815         {
 816                 vbuf.v_flags = vbuf.v_flags & ~V_FORGET & ~V_LOCKOUT;
 817                 vbuf.v_flags = vbuf.v_flags | V_ACCESS;
 818         }
 819
 820         /* Only rewrite the database record if we changed something */
 821         if (vbuf.v_flags != original_v_flags) {
 822                 CtdlSetRelationship(&vbuf, &CCC->user, &CCC->room);
 823         }
 824         end_critical_section(S_USERS);
 825
 826         /* Check for new mail */
 827         newmailcount = NewMailCount();
 828
 829         /* Set info to 1 if the room banner is new since our last visit.
 830          * Some clients only want to display it when it changes.
 831          */
 832         if (CCC->room.msgnum_info > vbuf.v_lastseen) {
 833                 info = 1;
 834         }
 835
 836         cdbfr = cdb_fetch(CDB_MSGLISTS, &CCC->room.QRnumber, sizeof(long));
 837         if (cdbfr != NULL) {
 838                 msglist = (long *) cdbfr->ptr;
 839                 cdbfr->ptr = NULL;      /* CtdlUserGoto() now owns this memory */
 840                 num_msgs = cdbfr->len / sizeof(long);
 841                 cdb_free(cdbfr);
 842         }
 843
 844         total_messages = 0;
 845         for (a=0; a<num_msgs; ++a) {
 846                 if (msglist[a] > 0L) ++total_messages;
 847         }
 848
 849         if (total_messages > 0) {
 850                 oldest_message = msglist[0];
 851                 newest_message = msglist[num_msgs - 1];
 852         }
 853
 854         num_sets = num_tokens(vbuf.v_seen, ',');
 855         for (s=0; s<num_sets; ++s) {
 856                 extract_token(setstr, vbuf.v_seen, s, ',', sizeof setstr);
 857
 858                 extract_token(lostr, setstr, 0, ':', sizeof lostr);
 859                 if (num_tokens(setstr, ':') >= 2) {
 860                         extract_token(histr, setstr, 1, ':', sizeof histr);
 861                         if (!strcmp(histr, "*")) {
 862                                 snprintf(histr, sizeof histr, "%ld", LONG_MAX);
 863                         }
 864                 }
 865                 else {
 866                         strcpy(histr, lostr);
 867                 }
 868                 lo = atol(lostr);
 869                 hi = atol(histr);
 870
 871                 for (a=0; a<num_msgs; ++a) if (msglist[a] > 0L) {
 872                         if ((msglist[a] >= lo) && (msglist[a] <= hi)) {
 873                                 ++old_messages;
 874                                 msglist[a] = 0L;
 875                         }
 876                 }
 877         }
 878         new_messages = total_messages - old_messages;
 879
 880         if (msglist != NULL) free(msglist);
 881
 882         if (CCC->room.QRflags & QR_MAILBOX)
 883                 rmailflag = 1;
 884         else
 885                 rmailflag = 0;
 886
 887         if ((CCC->room.QRroomaide == CCC->user.usernum)
 888             || (CCC->user.axlevel >= AxAideU))
 889                 raideflag = 1;
 890         else
 891                 raideflag = 0;
 892
 893         safestrncpy(truncated_roomname, CCC->room.QRname, sizeof truncated_roomname);
 894         if ( (CCC->room.QRflags & QR_MAILBOX)
 895            && (atol(CCC->room.QRname) == CCC->user.usernum) ) {
 896                 safestrncpy(truncated_roomname, &truncated_roomname[11], sizeof truncated_roomname);
 897         }
 898
 899         if (!strcasecmp(truncated_roomname, USERTRASHROOM)) {
 900                 is_trash = 1;
 901         }
 902
 903         if (retmsgs != NULL) *retmsgs = total_messages;
 904         if (retnew != NULL) *retnew = new_messages;
 905         if (retoldest != NULL) *retoldest = oldest_message;
 906         if (retnewest != NULL) *retnewest = newest_message;
 907         MSG_syslog(LOG_DEBUG, "<%s> %d new of %d total messages, oldest=%ld, newest=%ld",
 908                    CCC->room.QRname, new_messages, total_messages, oldest_message, newest_message
 909         );
 910
 911         CCC->curr_view = (int)vbuf.v_view;
 912
 913         if (display_result) {
 914                 cprintf("%d%c%s|%d|%d|%d|%d|%ld|%ld|%d|%d|%d|%d|%d|%d|%d|%d|%ld|\n",
 915                         CIT_OK, CtdlCheckExpress(),
 916                         truncated_roomname,
 917                         (int)new_messages,
 918                         (int)total_messages,
 919                         (int)info,
 920                         (int)CCC->room.QRflags,
 921                         (long)CCC->room.QRhighest,
 922                         (long)vbuf.v_lastseen,
 923                         (int)rmailflag,
 924                         (int)raideflag,
 925                         (int)newmailcount,
 926                         (int)CCC->room.QRfloor,
 927                         (int)vbuf.v_view,
 928                         (int)CCC->room.QRdefaultview,
 929                         (int)is_trash,
 930                         (int)CCC->room.QRflags2,
 931                         (long)CCC->room.QRmtime
 932                 );
 933         }
 934 }
 935
 936
 937 /*
 938  * Handle some of the macro named rooms
 939  */
 940 void convert_room_name_macros(char *towhere, size_t maxlen) {
 941         if (!strcasecmp(towhere, "_BASEROOM_")) {
 942                 safestrncpy(towhere, CtdlGetConfigStr("c_baseroom"), maxlen);
 943         }
 944         else if (!strcasecmp(towhere, "_MAIL_")) {
 945                 safestrncpy(towhere, MAILROOM, maxlen);
 946         }
 947         else if (!strcasecmp(towhere, "_TRASH_")) {
 948                 safestrncpy(towhere, USERTRASHROOM, maxlen);
 949         }
 950         else if (!strcasecmp(towhere, "_DRAFTS_")) {
 951                 safestrncpy(towhere, USERDRAFTROOM, maxlen);
 952         }
 953         else if (!strcasecmp(towhere, "_BITBUCKET_")) {
 954                 safestrncpy(towhere, CtdlGetConfigStr("c_twitroom"), maxlen);
 955         }
 956         else if (!strcasecmp(towhere, "_CALENDAR_")) {
 957                 safestrncpy(towhere, USERCALENDARROOM, maxlen);
 958         }
 959         else if (!strcasecmp(towhere, "_TASKS_")) {
 960                 safestrncpy(towhere, USERTASKSROOM, maxlen);
 961         }
 962         else if (!strcasecmp(towhere, "_CONTACTS_")) {
 963                 safestrncpy(towhere, USERCONTACTSROOM, maxlen);
 964         }
 965         else if (!strcasecmp(towhere, "_NOTES_")) {
 966                 safestrncpy(towhere, USERNOTESROOM, maxlen);
 967         }
 968 }
 969
 970
 971 /*
 972  * Back end function to rename a room.
 973  * You can also specify which floor to move the room to, or specify -1 to
 974  * keep the room on the same floor it was on.
 975  *
 976  * If you are renaming a mailbox room, you must supply the namespace prefix
 977  * in *at least* the old name!
 978  */
 979 int CtdlRenameRoom(char *old_name, char *new_name, int new_floor) {
 980         struct CitContext *CCC = CC;
 981         int old_floor = 0;
 982         struct ctdlroom qrbuf;
 983         struct ctdlroom qrtmp;
 984         int ret = 0;
 985         struct floor *fl;
 986         struct floor flbuf;
 987         long owner = 0L;
 988         char actual_old_name[ROOMNAMELEN];
 989
 990         MSG_syslog(LOG_DEBUG, "CtdlRenameRoom(%s, %s, %d)", old_name, new_name, new_floor);
 991
 992         if (new_floor >= 0) {
 993                 fl = CtdlGetCachedFloor(new_floor);
 994                 if ((fl->f_flags & F_INUSE) == 0) {
 995                         return(crr_invalid_floor);
 996                 }
 997         }
 998
 999         begin_critical_section(S_ROOMS);
1000
1001         if ( (CtdlGetRoom(&qrtmp, new_name) == 0)
1002            && (strcasecmp(new_name, old_name)) ) {
1003                 ret = crr_already_exists;
1004         }
1005
1006         else if (CtdlGetRoom(&qrbuf, old_name) != 0) {
1007                 ret = crr_room_not_found;
1008         }
1009
1010         else if ( (CCC->user.axlevel < AxAideU) && (!CCC->internal_pgm)
1011                   && (CCC->user.usernum != qrbuf.QRroomaide)
1012                   && ( (((qrbuf.QRflags & QR_MAILBOX) == 0) || (atol(qrbuf.QRname) != CCC->user.usernum))) )  {
1013                 ret = crr_access_denied;
1014         }
1015
1016         else if (CtdlIsNonEditable(&qrbuf)) {
1017                 ret = crr_noneditable;
1018         }
1019
1020         else {
1021                 /* Rename it */
1022                 safestrncpy(actual_old_name, qrbuf.QRname, sizeof actual_old_name);
1023                 if (qrbuf.QRflags & QR_MAILBOX) {
1024                         owner = atol(qrbuf.QRname);
1025                 }
1026                 if ( (owner > 0L) && (atol(new_name) == 0L) ) {
1027                         snprintf(qrbuf.QRname, sizeof(qrbuf.QRname),
1028                                         "%010ld.%s", owner, new_name);
1029                 }
1030                 else {
1031                         safestrncpy(qrbuf.QRname, new_name,
1032                                                 sizeof(qrbuf.QRname));
1033                 }
1034
1035                 /* Reject change of floor for baseroom/aideroom */
1036                 if (!strncasecmp(old_name, CtdlGetConfigStr("c_baseroom"), ROOMNAMELEN) ||
1037                     !strncasecmp(old_name, CtdlGetConfigStr("c_aideroom"), ROOMNAMELEN))
1038                 {
1039                         new_floor = 0;
1040                 }
1041
1042                 /* Take care of floor stuff */
1043                 old_floor = qrbuf.QRfloor;
1044                 if (new_floor < 0) {
1045                         new_floor = old_floor;
1046                 }
1047                 qrbuf.QRfloor = new_floor;
1048                 CtdlPutRoom(&qrbuf);
1049
1050                 begin_critical_section(S_CONFIG);
1051
1052                 /* If baseroom/aideroom name changes, update config */
1053                 if (!strncasecmp(old_name, CtdlGetConfigStr("c_baseroom"), ROOMNAMELEN)) {
1054                         CtdlSetConfigStr("c_baseroom", new_name);
1055                 }
1056                 if (!strncasecmp(old_name, CtdlGetConfigStr("c_aideroom"), ROOMNAMELEN)) {
1057                         CtdlSetConfigStr("c_aideroom", new_name);
1058                 }
1059
1060                 end_critical_section(S_CONFIG);
1061
1062                 /* If the room name changed, then there are now two room
1063                  * records, so we have to delete the old one.
1064                  */
1065                 if (strcasecmp(new_name, old_name)) {
1066                         b_deleteroom(actual_old_name);
1067                 }
1068
1069                 ret = crr_ok;
1070         }
1071
1072         end_critical_section(S_ROOMS);
1073
1074         /* Adjust the floor reference counts if necessary */
1075         if (new_floor != old_floor) {
1076                 lgetfloor(&flbuf, old_floor);
1077                 --flbuf.f_ref_count;
1078                 lputfloor(&flbuf, old_floor);
1079                 MSG_syslog(LOG_DEBUG, "Reference count for floor %d is now %d", old_floor, flbuf.f_ref_count);
1080                 lgetfloor(&flbuf, new_floor);
1081                 ++flbuf.f_ref_count;
1082                 lputfloor(&flbuf, new_floor);
1083                 MSG_syslog(LOG_DEBUG, "Reference count for floor %d is now %d", new_floor, flbuf.f_ref_count);
1084         }
1085
1086         /* ...and everybody say "YATTA!" */
1087         return(ret);
1088 }
1089
1090
1091 /*
1092  * Asynchronously schedule a room for deletion.  By placing the room into an invalid private namespace,
1093  * the room will appear deleted to the user(s), but the session doesn't need to block while waiting for
1094  * database operations to complete.  Instead, the room gets purged when THE DREADED AUTO-PURGER makes
1095  * its next run.  Aren't we so clever?!!
1096  */
1097 void CtdlScheduleRoomForDeletion(struct ctdlroom *qrbuf)
1098 {
1099         char old_name[ROOMNAMELEN];
1100         static int seq = 0;
1101
1102         syslog(LOG_NOTICE, "Scheduling room <%s> for deletion", qrbuf->QRname);
1103
1104         safestrncpy(old_name, qrbuf->QRname, sizeof old_name);
1105         CtdlGetRoom(qrbuf, qrbuf->QRname);
1106
1107         /* Turn the room into a private mailbox owned by a user who doesn't
1108          * exist.  This will immediately make the room invisible to everyone,
1109          * and qualify the room for purging.
1110          */
1111         snprintf(qrbuf->QRname, sizeof qrbuf->QRname, "9999999999.%08lx.%04d.%s",
1112                 time(NULL),
1113                 ++seq,
1114                 old_name
1115         );
1116         qrbuf->QRflags |= QR_MAILBOX;
1117         time(&qrbuf->QRgen);    /* Use a timestamp as the new generation number  */
1118         CtdlPutRoom(qrbuf);
1119         b_deleteroom(old_name);
1120 }
1121
1122
1123
1124 /*
1125  * Back end processing to delete a room and everything associated with it
1126  * (This one is synchronous and should only get called by THE DREADED
1127  * AUTO-PURGER in serv_expire.c.  All user-facing code should call
1128  * the asynchronous schedule_room_for_deletion() instead.)
1129  */
1130 void CtdlDeleteRoom(struct ctdlroom *qrbuf)
1131 {
1132         struct floor flbuf;
1133         char filename[PATH_MAX];
1134         char configdbkeyname[25];
1135
1136         syslog(LOG_NOTICE, "Deleting room <%s>", qrbuf->QRname);
1137
1138         /* Delete the info file */
1139         assoc_file_name(filename, sizeof filename, qrbuf, ctdl_info_dir);
1140         unlink(filename);
1141
1142         /* Delete the image file */
1143         assoc_file_name(filename, sizeof filename, qrbuf, ctdl_image_dir);
1144         unlink(filename);
1145
1146         /* Delete the room's network configdb entry */
1147         netcfg_keyname(configdbkeyname, qrbuf->QRnumber);
1148         CtdlDelConfig(configdbkeyname);
1149
1150         /* Delete the messages in the room
1151          * (Careful: this opens an S_ROOMS critical section!)
1152          */
1153         CtdlDeleteMessages(qrbuf->QRname, NULL, 0, "");
1154
1155         /* Flag the room record as not in use */
1156         CtdlGetRoomLock(qrbuf, qrbuf->QRname);
1157         qrbuf->QRflags = 0;
1158         CtdlPutRoomLock(qrbuf);
1159
1160         /* then decrement the reference count for the floor */
1161         lgetfloor(&flbuf, (int) (qrbuf->QRfloor));
1162         flbuf.f_ref_count = flbuf.f_ref_count - 1;
1163         lputfloor(&flbuf, (int) (qrbuf->QRfloor));
1164
1165         /* Delete the room record from the database! */
1166         b_deleteroom(qrbuf->QRname);
1167 }
1168
1169
1170 /*
1171  * Check access control for deleting a room
1172  */
1173 int CtdlDoIHavePermissionToDeleteThisRoom(struct ctdlroom *qr) {
1174
1175         if ((!(CC->logged_in)) && (!(CC->internal_pgm))) {
1176                 return(0);
1177         }
1178
1179         if (CtdlIsNonEditable(qr)) {
1180                 return(0);
1181         }
1182
1183         /*
1184          * For mailboxes, check stuff
1185          */
1186         if (qr->QRflags & QR_MAILBOX) {
1187
1188                 if (strlen(qr->QRname) < 12) return(0); /* bad name */
1189
1190                 if (atol(qr->QRname) != CC->user.usernum) {
1191                         return(0);      /* not my room */
1192                 }
1193
1194                 /* Can't delete your Mail> room */
1195                 if (!strcasecmp(&qr->QRname[11], MAILROOM)) return(0);
1196
1197                 /* Otherwise it's ok */
1198                 return(1);
1199         }
1200
1201         /*
1202          * For normal rooms, just check for admin or room admin status.
1203          */
1204         return(is_room_aide());
1205 }
1206
1207
1208
1209 /*
1210  * Internal code to create a new room (returns room flags)
1211  *
1212  * Room types:  0=public, 1=hidden, 2=passworded, 3=invitation-only,
1213  *              4=mailbox, 5=mailbox, but caller supplies namespace
1214  */
1215 unsigned CtdlCreateRoom(char *new_room_name,
1216                      int new_room_type,
1217                      char *new_room_pass,
1218                      int new_room_floor,
1219                      int really_create,
1220                      int avoid_access,
1221                      int new_room_view)
1222 {
1223
1224         struct ctdlroom qrbuf;
1225         struct floor flbuf;
1226         visit vbuf;
1227
1228         MARK_syslog(LOG_DEBUG, "CtdlCreateRoom(name=%s, type=%d, view=%d)", new_room_name, new_room_type, new_room_view);
1229
1230         if (CtdlGetRoom(&qrbuf, new_room_name) == 0) {
1231                 MARK_syslog(LOG_DEBUG, "Cannot create room <%s> - already exists", new_room_name);
1232                 return(0);
1233         }
1234
1235         memset(&qrbuf, 0, sizeof(struct ctdlroom));
1236         safestrncpy(qrbuf.QRpasswd, new_room_pass, sizeof qrbuf.QRpasswd);
1237         qrbuf.QRflags = QR_INUSE;
1238         if (new_room_type > 0)
1239                 qrbuf.QRflags = (qrbuf.QRflags | QR_PRIVATE);
1240         if (new_room_type == 1)
1241                 qrbuf.QRflags = (qrbuf.QRflags | QR_GUESSNAME);
1242         if (new_room_type == 2)
1243                 qrbuf.QRflags = (qrbuf.QRflags | QR_PASSWORDED);
1244         if ( (new_room_type == 4) || (new_room_type == 5) ) {
1245                 qrbuf.QRflags = (qrbuf.QRflags | QR_MAILBOX);
1246                 /* qrbuf.QRflags2 |= QR2_SUBJECTREQ; */
1247         }
1248
1249         /* If the user is requesting a personal room, set up the room
1250          * name accordingly (prepend the user number)
1251          */
1252         if (new_room_type == 4) {
1253                 CtdlMailboxName(qrbuf.QRname, sizeof qrbuf.QRname, &CC->user, new_room_name);
1254         }
1255         else {
1256                 safestrncpy(qrbuf.QRname, new_room_name, sizeof qrbuf.QRname);
1257         }
1258
1259         /* If the room is private, and the system administrator has elected
1260          * to automatically grant room admin privileges, do so now.
1261          */
1262         if ((qrbuf.QRflags & QR_PRIVATE) && (CREATAIDE == 1)) {
1263                 qrbuf.QRroomaide = CC->user.usernum;
1264         }
1265         /* Blog owners automatically become room admins of their blogs.
1266          * (In the future we will offer a site-wide configuration setting to suppress this behavior.)
1267          */
1268         else if (new_room_view == VIEW_BLOG) {
1269                 qrbuf.QRroomaide = CC->user.usernum;
1270         }
1271         /* Otherwise, set the room admin to undefined.
1272          */
1273         else {
1274                 qrbuf.QRroomaide = (-1L);
1275         }
1276
1277         /*
1278          * If the caller is only interested in testing whether this will work,
1279          * return now without creating the room.
1280          */
1281         if (!really_create) return (qrbuf.QRflags);
1282
1283         qrbuf.QRnumber = get_new_room_number();
1284         qrbuf.QRhighest = 0L;   /* No messages in this room yet */
1285         time(&qrbuf.QRgen);     /* Use a timestamp as the generation number */
1286         qrbuf.QRfloor = new_room_floor;
1287         qrbuf.QRdefaultview = new_room_view;
1288
1289         /* save what we just did... */
1290         CtdlPutRoom(&qrbuf);
1291
1292         /* bump the reference count on whatever floor the room is on */
1293         lgetfloor(&flbuf, (int) qrbuf.QRfloor);
1294         flbuf.f_ref_count = flbuf.f_ref_count + 1;
1295         lputfloor(&flbuf, (int) qrbuf.QRfloor);
1296
1297         /* Grant the creator access to the room unless the avoid_access
1298          * parameter was specified.
1299          */
1300         if ( (CC->logged_in) && (avoid_access == 0) ) {
1301                 CtdlGetRelationship(&vbuf, &CC->user, &qrbuf);
1302                 vbuf.v_flags = vbuf.v_flags & ~V_FORGET & ~V_LOCKOUT;
1303                 vbuf.v_flags = vbuf.v_flags | V_ACCESS;
1304                 CtdlSetRelationship(&vbuf, &CC->user, &qrbuf);
1305         }
1306
1307         /* resume our happy day */
1308         return (qrbuf.QRflags);
1309 }