citadel/modules/rssclient/serv_rssclient.c

   1 /*
   2  * Bring external RSS feeds into rooms.
   3  *
   4  * Copyright (c) 2007-2010 by the citadel.org team
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 3 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #include <stdlib.h>
  22 #include <unistd.h>
  23 #include <stdio.h>
  24
  25 #if TIME_WITH_SYS_TIME
  26 # include <sys/time.h>
  27 # include <time.h>
  28 #else
  29 # if HAVE_SYS_TIME_H
  30 #  include <sys/time.h>
  31 # else
  32 #  include <time.h>
  33 # endif
  34 #endif
  35
  36 #include <ctype.h>
  37 #include <string.h>
  38 #include <errno.h>
  39 #include <sys/types.h>
  40 #include <sys/stat.h>
  41 #include <expat.h>
  42 #include <curl/curl.h>
  43 #include <libcitadel.h>
  44 #include "citadel.h"
  45 #include "server.h"
  46 #include "citserver.h"
  47 #include "support.h"
  48 #include "config.h"
  49 #include "threads.h"
  50 #include "ctdl_module.h"
  51 #include "msgbase.h"
  52 #include "parsedate.h"
  53 #include "database.h"
  54 #include "citadel_dirs.h"
  55 #include "md5.h"
  56 #include "context.h"
  57 #include "event_client.h"
  58 #include "rss_atom_parser.h"
  59
  60
  61 #define TMP_MSGDATA 0xFF
  62 #define TMP_SHORTER_URL_OFFSET 0xFE
  63 #define TMP_SHORTER_URLS 0xFD
  64
  65 citthread_mutex_t RSSQueueMutex; /* locks the access to the following vars: */
  66 HashList *RSSQueueRooms = NULL; /* rss_room_counter */
  67 HashList *RSSFetchUrls = NULL; /* -> rss_aggregator; ->RefCount access to be locked too. */
  68
  69 eNextState RSSAggregatorTerminate(AsyncIO *IO);
  70
  71
  72 struct rssnetcfg *rnclist = NULL;
  73 void AppendLink(StrBuf *Message, StrBuf *link, StrBuf *LinkTitle, const char *Title)
  74 {
  75         if (StrLength(link) > 0)
  76         {
  77                 StrBufAppendBufPlain(Message, HKEY("<a href=\""), 0);
  78                 StrBufAppendBuf(Message, link, 0);
  79                 StrBufAppendBufPlain(Message, HKEY("\">"), 0);
  80                 if (StrLength(LinkTitle) > 0)
  81                         StrBufAppendBuf(Message, LinkTitle, 0);
  82                 else if ((Title != NULL) && !IsEmptyStr(Title))
  83                         StrBufAppendBufPlain(Message, Title, -1, 0);
  84                 else
  85                         StrBufAppendBuf(Message, link, 0);
  86                 StrBufAppendBufPlain(Message, HKEY("</a><br>\n"), 0);
  87         }
  88 }
  89 typedef struct __networker_save_message {
  90         AsyncIO IO;
  91         struct CtdlMessage *Msg;
  92         struct recptypes *recp;
  93         rss_aggregator *Cfg;
  94         StrBuf *MsgGUID;
  95         StrBuf *Message;
  96         struct UseTable ut;
  97 } networker_save_message;
  98
  99
 100 void DeleteRoomReference(long QRnumber)
 101 {
 102         HashPos *At;
 103         long HKLen;
 104         const char *HK;
 105         void *vData = NULL;
 106         rss_room_counter *pRoomC;
 107
 108         At = GetNewHashPos(RSSQueueRooms, 0);
 109
 110         GetHashPosFromKey(RSSQueueRooms, LKEY(QRnumber), At);
 111         GetHashPos(RSSQueueRooms, At, &HKLen, &HK, &vData);
 112         if (vData != NULL)
 113         {
 114                 pRoomC = (rss_room_counter *) vData;
 115                 pRoomC->count --;
 116                 if (pRoomC->count == 0)
 117                         DeleteEntryFromHash(RSSQueueRooms, At);
 118         }
 119         DeleteHashPos(&At);
 120 }
 121
 122 void UnlinkRooms(rss_aggregator *Cfg)
 123 {
 124
 125         DeleteRoomReference(Cfg->QRnumber);
 126         if (Cfg->OtherQRnumbers != NULL)
 127         {
 128                 long HKLen;
 129                 const char *HK;
 130                 HashPos *At;
 131                 void *vData;
 132
 133                 At = GetNewHashPos(Cfg->OtherQRnumbers, 0);
 134                 while (GetNextHashPos(Cfg->OtherQRnumbers, At, &HKLen, &HK, &vData) &&
 135                        (vData != NULL))
 136                 {
 137                         long *lData = (long*) vData;
 138                         DeleteRoomReference(*lData);
 139                 }
 140
 141                 DeleteHashPos(&At);
 142         }
 143
 144 }
 145
 146 void UnlinkRSSAggregator(rss_aggregator *Cfg)
 147 {
 148         HashPos *At;
 149
 150         UnlinkRooms(Cfg);
 151
 152         At = GetNewHashPos(RSSFetchUrls, 0);
 153         if (GetHashPosFromKey(RSSFetchUrls, SKEY(Cfg->Url), At) == 0)
 154         {
 155                 DeleteEntryFromHash(RSSFetchUrls, At);
 156         }
 157         DeleteHashPos(&At);
 158 }
 159
 160 eNextState FreeNetworkSaveMessage (AsyncIO *IO)
 161 {
 162         networker_save_message *Ctx = (networker_save_message *) IO->Data;
 163
 164         citthread_mutex_lock(&RSSQueueMutex);
 165         Ctx->Cfg->RefCount --;
 166
 167         if (Ctx->Cfg->RefCount == 0)
 168         {
 169                 UnlinkRSSAggregator(Ctx->Cfg);
 170
 171         }
 172         citthread_mutex_unlock(&RSSQueueMutex);
 173
 174         CtdlFreeMessage(Ctx->Msg);
 175         free_recipients(Ctx->recp);
 176         FreeStrBuf(&Ctx->Message);
 177         FreeStrBuf(&Ctx->MsgGUID);
 178         free(Ctx);
 179         return eAbort;
 180 }
 181
 182 eNextState AbortNetworkSaveMessage (AsyncIO *IO)
 183 {
 184         return eAbort; ///TODO
 185 }
 186
 187 eNextState RSSSaveMessage(AsyncIO *IO)
 188 {
 189         networker_save_message *Ctx = (networker_save_message *) IO->Data;
 190
 191         Ctx->Msg->cm_fields['M'] = SmashStrBuf(&Ctx->Message);
 192
 193         CtdlSubmitMsg(Ctx->Msg, Ctx->recp, NULL, 0);
 194
 195         /* write the uidl to the use table so we don't store this item again */
 196         cdb_store(CDB_USETABLE, SKEY(Ctx->MsgGUID), &Ctx->ut, sizeof(struct UseTable) );
 197
 198         return eTerminateConnection;
 199 }
 200
 201 eNextState RSS_FetchNetworkUsetableEntry(AsyncIO *IO)
 202 {
 203         struct cdbdata *cdbut;
 204         networker_save_message *Ctx = (networker_save_message *) IO->Data;
 205
 206         /* Find out if we've already seen this item */
 207         strcpy(Ctx->ut.ut_msgid, ChrPtr(Ctx->MsgGUID)); /// TODO
 208         Ctx->ut.ut_timestamp = time(NULL);
 209
 210         cdbut = cdb_fetch(CDB_USETABLE, SKEY(Ctx->MsgGUID));
 211 #ifndef DEBUG_RSS
 212         if (cdbut != NULL) {
 213                 /* Item has already been seen */
 214                 syslog(LOG_DEBUG, "%s has already been seen\n", ChrPtr(Ctx->MsgGUID));
 215                 cdb_free(cdbut);
 216
 217                 /* rewrite the record anyway, to update the timestamp */
 218                 cdb_store(CDB_USETABLE,
 219                           SKEY(Ctx->MsgGUID),
 220                           &Ctx->ut, sizeof(struct UseTable) );
 221                 return eAbort;
 222         }
 223         else
 224 #endif
 225         {
 226                 NextDBOperation(IO, RSSSaveMessage);
 227                 return eSendMore;
 228         }
 229 }
 230 void RSSQueueSaveMessage(struct CtdlMessage *Msg, struct recptypes *recp, StrBuf *MsgGUID, StrBuf *MessageBody, rss_aggregator *Cfg)
 231 {
 232         networker_save_message *Ctx;
 233
 234         Ctx = (networker_save_message *) malloc(sizeof(networker_save_message));
 235         memset(Ctx, 0, sizeof(networker_save_message));
 236
 237         Ctx->MsgGUID = MsgGUID;
 238         Ctx->Message = MessageBody;
 239         Ctx->Msg = Msg;
 240         Ctx->Cfg = Cfg;
 241         Ctx->recp = recp;
 242         Ctx->IO.Data = Ctx;
 243         Ctx->IO.CitContext = CloneContext(CC);
 244         Ctx->IO.Terminate = FreeNetworkSaveMessage;
 245         Ctx->IO.ShutdownAbort = AbortNetworkSaveMessage;
 246         QueueDBOperation(&Ctx->IO, RSS_FetchNetworkUsetableEntry);
 247 }
 248
 249
 250 /*
 251  * Commit a fetched and parsed RSS item to disk
 252  */
 253 void rss_save_item(rss_item *ri, rss_aggregator *Cfg)
 254 {
 255
 256         struct MD5Context md5context;
 257         u_char rawdigest[MD5_DIGEST_LEN];
 258         struct CtdlMessage *msg;
 259         struct recptypes *recp = NULL;
 260         int msglen = 0;
 261         StrBuf *Message;
 262         StrBuf *guid;
 263         StrBuf *Buf;
 264
 265         recp = (struct recptypes *) malloc(sizeof(struct recptypes));
 266         if (recp == NULL) return;
 267         memset(recp, 0, sizeof(struct recptypes));
 268         Buf = NewStrBufDup(Cfg->rooms);
 269         recp->recp_room = SmashStrBuf(&Buf);
 270         recp->num_room = Cfg->roomlist_parts;
 271         recp->recptypes_magic = RECPTYPES_MAGIC;
 272
 273         Cfg->RefCount ++;
 274         /* Construct a GUID to use in the S_USETABLE table.
 275          * If one is not present in the item itself, make one up.
 276          */
 277         if (ri->guid != NULL) {
 278                 StrBufSpaceToBlank(ri->guid);
 279                 StrBufTrim(ri->guid);
 280                 guid = NewStrBufPlain(HKEY("rss/"));
 281                 StrBufAppendBuf(guid, ri->guid, 0);
 282         }
 283         else {
 284                 MD5Init(&md5context);
 285                 if (ri->title != NULL) {
 286                         MD5Update(&md5context, (const unsigned char*)ChrPtr(ri->title), StrLength(ri->title));
 287                 }
 288                 if (ri->link != NULL) {
 289                         MD5Update(&md5context, (const unsigned char*)ChrPtr(ri->link), StrLength(ri->link));
 290                 }
 291                 MD5Final(rawdigest, &md5context);
 292                 guid = NewStrBufPlain(NULL, MD5_DIGEST_LEN * 2 + 12 /* _rss2ctdl*/);
 293                 StrBufHexEscAppend(guid, NULL, rawdigest, MD5_DIGEST_LEN);
 294                 StrBufAppendBufPlain(guid, HKEY("_rss2ctdl"), 0);
 295         }
 296
 297         /* translate Item into message. */
 298         syslog(LOG_DEBUG, "RSS: translating item...\n");
 299         if (ri->description == NULL) ri->description = NewStrBufPlain(HKEY(""));
 300         StrBufSpaceToBlank(ri->description);
 301         msg = malloc(sizeof(struct CtdlMessage));
 302         memset(msg, 0, sizeof(struct CtdlMessage));
 303         msg->cm_magic = CTDLMESSAGE_MAGIC;
 304         msg->cm_anon_type = MES_NORMAL;
 305         msg->cm_format_type = FMT_RFC822;
 306
 307         if (ri->guid != NULL) {
 308                 msg->cm_fields['E'] = strdup(ChrPtr(ri->guid));
 309         }
 310
 311         if (ri->author_or_creator != NULL) {
 312                 char *From;
 313                 StrBuf *Encoded = NULL;
 314                 int FromAt;
 315
 316                 From = html_to_ascii(ChrPtr(ri->author_or_creator),
 317                                      StrLength(ri->author_or_creator),
 318                                      512, 0);
 319                 StrBufPlain(ri->author_or_creator, From, -1);
 320                 StrBufTrim(ri->author_or_creator);
 321                 free(From);
 322
 323                 FromAt = strchr(ChrPtr(ri->author_or_creator), '@') != NULL;
 324                 if (!FromAt && StrLength (ri->author_email) > 0)
 325                 {
 326                         StrBufRFC2047encode(&Encoded, ri->author_or_creator);
 327                         msg->cm_fields['A'] = SmashStrBuf(&Encoded);
 328                         msg->cm_fields['P'] = SmashStrBuf(&ri->author_email);
 329                 }
 330                 else
 331                 {
 332                         if (FromAt)
 333                         {
 334                                 msg->cm_fields['A'] = SmashStrBuf(&ri->author_or_creator);
 335                                 msg->cm_fields['P'] = strdup(msg->cm_fields['A']);
 336                         }
 337                         else
 338                         {
 339                                 StrBufRFC2047encode(&Encoded, ri->author_or_creator);
 340                                 msg->cm_fields['A'] = SmashStrBuf(&Encoded);
 341                                 msg->cm_fields['P'] = strdup("rss@localhost");
 342                         }
 343                 }
 344         }
 345         else {
 346                 msg->cm_fields['A'] = strdup("rss");
 347         }
 348
 349         msg->cm_fields['N'] = strdup(NODENAME);
 350         if (ri->title != NULL) {
 351                 long len;
 352                 char *Sbj;
 353                 StrBuf *Encoded, *QPEncoded;
 354
 355                 QPEncoded = NULL;
 356                 StrBufSpaceToBlank(ri->title);
 357                 len = StrLength(ri->title);
 358                 Sbj = html_to_ascii(ChrPtr(ri->title), len, 512, 0);
 359                 len = strlen(Sbj);
 360                 if (Sbj[len - 1] == '\n')
 361                 {
 362                         len --;
 363                         Sbj[len] = '\0';
 364                 }
 365                 Encoded = NewStrBufPlain(Sbj, len);
 366                 free(Sbj);
 367
 368                 StrBufTrim(Encoded);
 369                 StrBufRFC2047encode(&QPEncoded, Encoded);
 370
 371                 msg->cm_fields['U'] = SmashStrBuf(&QPEncoded);
 372                 FreeStrBuf(&Encoded);
 373         }
 374         msg->cm_fields['T'] = malloc(64);
 375         snprintf(msg->cm_fields['T'], 64, "%ld", ri->pubdate);
 376         if (ri->channel_title != NULL) {
 377                 if (StrLength(ri->channel_title) > 0) {
 378                         msg->cm_fields['O'] = strdup(ChrPtr(ri->channel_title));
 379                 }
 380         }
 381         if (ri->link == NULL)
 382                 ri->link = NewStrBufPlain(HKEY(""));
 383
 384 #if 0 /* temporarily disable shorter urls. */
 385         msg->cm_fields[TMP_SHORTER_URLS] = GetShorterUrls(ri->description);
 386 #endif
 387
 388         msglen += 1024 + StrLength(ri->link) + StrLength(ri->description) ;
 389
 390         Message = NewStrBufPlain(NULL, StrLength(ri->description));
 391
 392         StrBufPlain(Message, HKEY(
 393                             "Content-type: text/html; charset=\"UTF-8\"\r\n\r\n"
 394                             "<html><body>\n"));
 395 #if 0 /* disable shorter url for now. */
 396         msg->cm_fields[TMP_SHORTER_URL_OFFSET] = StrLength(Message);
 397 #endif
 398         StrBufAppendBuf(Message, ri->description, 0);
 399         StrBufAppendBufPlain(Message, HKEY("<br><br>\n"), 0);
 400
 401         AppendLink(Message, ri->link, ri->linkTitle, NULL);
 402         AppendLink(Message, ri->reLink, ri->reLinkTitle, "Reply to this");
 403         StrBufAppendBufPlain(Message, HKEY("</body></html>\n"), 0);
 404
 405         RSSQueueSaveMessage(msg, recp, guid, Message, Cfg);
 406 }
 407
 408
 409
 410 /*
 411  * Begin a feed parse
 412  */
 413 int rss_do_fetching(rss_aggregator *Cfg)
 414 {
 415         rss_item *ri;
 416
 417         time_t now;
 418         AsyncIO *IO;
 419
 420         now = time(NULL);
 421
 422         if ((Cfg->next_poll != 0) && (now < Cfg->next_poll))
 423                 return 0;
 424         Cfg->RefCount = 1;
 425
 426         ri = (rss_item*) malloc(sizeof(rss_item));
 427         memset(ri, 0, sizeof(rss_item));
 428         Cfg->Item = ri;
 429         IO = &Cfg->IO;
 430         IO->CitContext = CloneContext(CC);
 431         IO->Data = Cfg;
 432
 433
 434         syslog(LOG_DEBUG, "Fetching RSS feed <%s>\n", ChrPtr(Cfg->Url));
 435         ParseURL(&IO->ConnectMe, Cfg->Url, 80);
 436         CurlPrepareURL(IO->ConnectMe);
 437
 438         if (! evcurl_init(IO,
 439 //                        Ctx,
 440                           NULL,
 441                           "Citadel RSS Client",
 442                           ParseRSSReply,
 443                           RSSAggregatorTerminate))
 444         {
 445                 syslog(LOG_DEBUG, "Unable to initialize libcurl.\n");
 446                 return 0;
 447         }
 448
 449         evcurl_handle_start(IO);
 450         return 1;
 451 }
 452
 453
 454
 455 void DeleteRssCfg(void *vptr)
 456 {
 457         rss_aggregator *rncptr = (rss_aggregator *)vptr;
 458
 459         FreeStrBuf(&rncptr->Url);
 460         FreeStrBuf(&rncptr->rooms);
 461         FreeStrBuf(&rncptr->CData);
 462         FreeStrBuf(&rncptr->Key);
 463
 464         DeleteHash(&rncptr->OtherQRnumbers);
 465
 466         if (rncptr->Item != NULL)
 467         {
 468                 FreeStrBuf(&rncptr->Item->guid);
 469                 FreeStrBuf(&rncptr->Item->title);
 470                 FreeStrBuf(&rncptr->Item->link);
 471                 FreeStrBuf(&rncptr->Item->linkTitle);
 472                 FreeStrBuf(&rncptr->Item->reLink);
 473                 FreeStrBuf(&rncptr->Item->reLinkTitle);
 474                 FreeStrBuf(&rncptr->Item->description);
 475                 FreeStrBuf(&rncptr->Item->channel_title);
 476                 FreeStrBuf(&rncptr->Item->author_or_creator);
 477                 FreeStrBuf(&rncptr->Item->author_url);
 478                 FreeStrBuf(&rncptr->Item->author_email);
 479
 480                 free(rncptr->Item);
 481         }
 482         free(rncptr);
 483 }
 484
 485 eNextState RSSAggregatorTerminate(AsyncIO *IO)
 486 {
 487         rss_aggregator *rncptr = (rss_aggregator *)IO->Data;
 488         HashPos *At;
 489         long HKLen;
 490         const char *HK;
 491         void *vData;
 492
 493         citthread_mutex_lock(&RSSQueueMutex);
 494         rncptr->RefCount --;
 495         if (rncptr->RefCount == 0)
 496         {
 497                 UnlinkRSSAggregator(rncptr);
 498
 499         }
 500         citthread_mutex_unlock(&RSSQueueMutex);
 501 /*
 502         At = GetNewHashPos(RSSFetchUrls, 0);
 503
 504         citthread_mutex_lock(&RSSQueueMutex);
 505         GetHashPosFromKey(RSSFetchUrls, SKEY(rncptr->Url), At);
 506         GetHashPos(RSSFetchUrls, At, &HKLen, &HK, &vData);
 507         DeleteEntryFromHash(RSSFetchUrls, At);
 508         citthread_mutex_unlock(&RSSQueueMutex);
 509
 510         DeleteHashPos(&At);
 511 */
 512         return eAbort;
 513 }
 514
 515 /*
 516  * Scan a room's netconfig to determine whether it is requesting any RSS feeds
 517  */
 518 void rssclient_scan_room(struct ctdlroom *qrbuf, void *data)
 519 {
 520         StrBuf *CfgData;
 521         StrBuf *CfgType;
 522         StrBuf *Line;
 523         rss_room_counter *Count = NULL;
 524         struct stat statbuf;
 525         char filename[PATH_MAX];
 526         int  fd;
 527         int Done;
 528         rss_aggregator *rncptr = NULL;
 529         rss_aggregator *use_this_rncptr = NULL;
 530         void *vptr;
 531         const char *CfgPtr, *lPtr;
 532         const char *Err;
 533
 534         citthread_mutex_lock(&RSSQueueMutex);
 535         if (GetHash(RSSQueueRooms, LKEY(qrbuf->QRnumber), &vptr))
 536         {
 537                 syslog(LOG_DEBUG,
 538                               "rssclient: [%ld] %s already in progress.\n",
 539                               qrbuf->QRnumber,
 540                               qrbuf->QRname);
 541                 citthread_mutex_unlock(&RSSQueueMutex);
 542                 return;
 543         }
 544         citthread_mutex_unlock(&RSSQueueMutex);
 545
 546         assoc_file_name(filename, sizeof filename, qrbuf, ctdl_netcfg_dir);
 547
 548         if (CtdlThreadCheckStop())
 549                 return;
 550
 551         /* Only do net processing for rooms that have netconfigs */
 552         fd = open(filename, 0);
 553         if (fd <= 0) {
 554                 //syslog(LOG_DEBUG, "rssclient: %s no config.\n", qrbuf->QRname);
 555                 return;
 556         }
 557         if (CtdlThreadCheckStop())
 558                 return;
 559         if (fstat(fd, &statbuf) == -1) {
 560                 syslog(LOG_DEBUG, "ERROR: could not stat configfile '%s' - %s\n",
 561                         filename, strerror(errno));
 562                 return;
 563         }
 564         if (CtdlThreadCheckStop())
 565                 return;
 566         CfgData = NewStrBufPlain(NULL, statbuf.st_size + 1);
 567         if (StrBufReadBLOB(CfgData, &fd, 1, statbuf.st_size, &Err) < 0) {
 568                 close(fd);
 569                 FreeStrBuf(&CfgData);
 570                 syslog(LOG_DEBUG, "ERROR: reading config '%s' - %s<br>\n",
 571                         filename, strerror(errno));
 572                 return;
 573         }
 574         close(fd);
 575         if (CtdlThreadCheckStop())
 576                 return;
 577
 578         CfgPtr = NULL;
 579         CfgType = NewStrBuf();
 580         Line = NewStrBufPlain(NULL, StrLength(CfgData));
 581         Done = 0;
 582         while (!Done)
 583         {
 584             Done = StrBufSipLine(Line, CfgData, &CfgPtr) == 0;
 585             if (StrLength(Line) > 0)
 586             {
 587                 lPtr = NULL;
 588                 StrBufExtract_NextToken(CfgType, Line, &lPtr, '|');
 589                 if (!strcasecmp("rssclient", ChrPtr(CfgType)))
 590                 {
 591                     if (Count == NULL)
 592                     {
 593                         Count = malloc(sizeof(rss_room_counter));
 594                         Count->count = 0;
 595                     }
 596                     Count->count ++;
 597                     rncptr = (rss_aggregator *) malloc(sizeof(rss_aggregator));
 598                     memset (rncptr, 0, sizeof(rss_aggregator));
 599                     rncptr->roomlist_parts = 1;
 600                     rncptr->Url = NewStrBuf();
 601                     StrBufExtract_NextToken(rncptr->Url, Line, &lPtr, '|');
 602
 603                     citthread_mutex_lock(&RSSQueueMutex);
 604                     GetHash(RSSFetchUrls, SKEY(rncptr->Url), &vptr);
 605                     use_this_rncptr = (rss_aggregator *)vptr;
 606                     if (use_this_rncptr != NULL)
 607                     {
 608                             /* mustn't attach to an active session */
 609                             if (use_this_rncptr->RefCount > 0)
 610                             {
 611                                     DeleteRssCfg(rncptr);
 612                                     Count->count--;
 613                             }
 614                             else
 615                             {
 616                                     long *QRnumber;
 617                                     StrBufAppendBufPlain(use_this_rncptr->rooms,
 618                                                          qrbuf->QRname,
 619                                                          -1, 0);
 620                                     if (use_this_rncptr->roomlist_parts == 1)
 621                                     {
 622                                             use_this_rncptr->OtherQRnumbers = NewHash(1, lFlathash);
 623                                     }
 624                                     QRnumber = (long*)malloc(sizeof(long));
 625                                     *QRnumber = qrbuf->QRnumber;
 626                                     Put(use_this_rncptr->OtherQRnumbers, LKEY(qrbuf->QRnumber), QRnumber, NULL);
 627                                     use_this_rncptr->roomlist_parts++;
 628                             }
 629                             citthread_mutex_unlock(&RSSQueueMutex);
 630                             continue;
 631                     }
 632                     citthread_mutex_unlock(&RSSQueueMutex);
 633
 634                     rncptr->ItemType = RSS_UNSET;
 635
 636                     rncptr->rooms = NewStrBufPlain(qrbuf->QRname, -1);
 637
 638                     citthread_mutex_lock(&RSSQueueMutex);
 639                     Put(RSSFetchUrls, SKEY(rncptr->Url), rncptr, DeleteRssCfg);
 640                     citthread_mutex_unlock(&RSSQueueMutex);
 641                 }
 642             }
 643         }
 644         if (Count != NULL)
 645         {
 646                 Count->QRnumber = qrbuf->QRnumber;
 647                 citthread_mutex_lock(&RSSQueueMutex);
 648                 syslog(LOG_DEBUG, "rssclient: [%ld] %s now starting.\n",
 649                               qrbuf->QRnumber, qrbuf->QRname);
 650                 Put(RSSQueueRooms, LKEY(qrbuf->QRnumber), Count, NULL);
 651                 citthread_mutex_unlock(&RSSQueueMutex);
 652         }
 653         FreeStrBuf(&CfgData);
 654         FreeStrBuf(&CfgType);
 655         FreeStrBuf(&Line);
 656 }
 657
 658 /*
 659  * Scan for rooms that have RSS client requests configured
 660  */
 661 void rssclient_scan(void) {
 662         static int doing_rssclient = 0;
 663         rss_aggregator *rptr = NULL;
 664         void *vrptr = NULL;
 665         HashPos  *it;
 666         long len;
 667         const char *Key;
 668
 669         /*
 670          * This is a simple concurrency check to make sure only one rssclient run
 671          * is done at a time.  We could do this with a mutex, but since we
 672          * don't really require extremely fine granularity here, we'll do it
 673          * with a static variable instead.
 674          */
 675         if (doing_rssclient) return;
 676         doing_rssclient = 1;
 677
 678         syslog(LOG_DEBUG, "rssclient started\n");
 679         CtdlForEachRoom(rssclient_scan_room, NULL);
 680
 681         citthread_mutex_lock(&RSSQueueMutex);
 682
 683         it = GetNewHashPos(RSSFetchUrls, 0);
 684         while (GetNextHashPos(RSSFetchUrls, it, &len, &Key, &vrptr) &&
 685                (vrptr != NULL)) {
 686                 rptr = (rss_aggregator *)vrptr;
 687                 if (rptr->RefCount == 0)
 688                         if (!rss_do_fetching(rptr))
 689                                 UnlinkRSSAggregator(rptr);
 690         }
 691         DeleteHashPos(&it);
 692         citthread_mutex_unlock(&RSSQueueMutex);
 693
 694         syslog(LOG_DEBUG, "rssclient ended\n");
 695         doing_rssclient = 0;
 696         return;
 697 }
 698
 699 void rss_cleanup(void)
 700 {
 701         citthread_mutex_destroy(&RSSQueueMutex);
 702         DeleteHash(&RSSFetchUrls);
 703         DeleteHash(&RSSQueueRooms);
 704 }
 705
 706
 707 CTDL_MODULE_INIT(rssclient)
 708 {
 709         if (threading)
 710         {
 711                 citthread_mutex_init(&RSSQueueMutex, NULL);
 712                 RSSQueueRooms = NewHash(1, lFlathash);
 713                 RSSFetchUrls = NewHash(1, NULL);
 714                 syslog(LOG_INFO, "%s\n", curl_version());
 715                 CtdlRegisterSessionHook(rssclient_scan, EVT_TIMER);
 716                 CtdlRegisterCleanupHook(rss_cleanup);
 717         }
 718         return "rssclient";
 719 }