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 // TODO: relink me:     ExpandShortUrls(ri->description);
 202
 203 eNextState RSS_FetchNetworkUsetableEntry(AsyncIO *IO)
 204 {
 205         struct cdbdata *cdbut;
 206         networker_save_message *Ctx = (networker_save_message *) IO->Data;
 207
 208         /* Find out if we've already seen this item */
 209         strcpy(Ctx->ut.ut_msgid, ChrPtr(Ctx->MsgGUID)); /// TODO
 210         Ctx->ut.ut_timestamp = time(NULL);
 211
 212         cdbut = cdb_fetch(CDB_USETABLE, SKEY(Ctx->MsgGUID));
 213 #ifndef DEBUG_RSS
 214         if (cdbut != NULL) {
 215                 /* Item has already been seen */
 216                 syslog(LOG_DEBUG, "%s has already been seen\n", ChrPtr(Ctx->MsgGUID));
 217                 cdb_free(cdbut);
 218
 219                 /* rewrite the record anyway, to update the timestamp */
 220                 cdb_store(CDB_USETABLE,
 221                           SKEY(Ctx->MsgGUID),
 222                           &Ctx->ut, sizeof(struct UseTable) );
 223                 return eAbort;
 224         }
 225         else
 226 #endif
 227         {
 228                 NextDBOperation(IO, RSSSaveMessage);
 229                 return eSendMore;
 230         }
 231 }
 232 void RSSQueueSaveMessage(struct CtdlMessage *Msg, struct recptypes *recp, StrBuf *MsgGUID, StrBuf *MessageBody, rss_aggregator *Cfg)
 233 {
 234         networker_save_message *Ctx;
 235
 236         Ctx = (networker_save_message *) malloc(sizeof(networker_save_message));
 237         memset(Ctx, 0, sizeof(networker_save_message));
 238
 239         Ctx->MsgGUID = MsgGUID;
 240         Ctx->Message = MessageBody;
 241         Ctx->Msg = Msg;
 242         Ctx->Cfg = Cfg;
 243         Ctx->recp = recp;
 244         Ctx->IO.Data = Ctx;
 245         Ctx->IO.CitContext = CloneContext(CC);
 246         Ctx->IO.Terminate = FreeNetworkSaveMessage;
 247         Ctx->IO.ShutdownAbort = AbortNetworkSaveMessage;
 248         QueueDBOperation(&Ctx->IO, RSS_FetchNetworkUsetableEntry);
 249 }
 250
 251
 252 /*
 253  * Commit a fetched and parsed RSS item to disk
 254  */
 255 void rss_save_item(rss_item *ri, rss_aggregator *Cfg)
 256 {
 257
 258         struct MD5Context md5context;
 259         u_char rawdigest[MD5_DIGEST_LEN];
 260         struct CtdlMessage *msg;
 261         struct recptypes *recp = NULL;
 262         int msglen = 0;
 263         StrBuf *Message;
 264         StrBuf *guid;
 265         StrBuf *Buf;
 266
 267         recp = (struct recptypes *) malloc(sizeof(struct recptypes));
 268         if (recp == NULL) return;
 269         memset(recp, 0, sizeof(struct recptypes));
 270         Buf = NewStrBufDup(Cfg->rooms);
 271         recp->recp_room = SmashStrBuf(&Buf);
 272         recp->num_room = Cfg->roomlist_parts;
 273         recp->recptypes_magic = RECPTYPES_MAGIC;
 274
 275         Cfg->RefCount ++;
 276         /* Construct a GUID to use in the S_USETABLE table.
 277          * If one is not present in the item itself, make one up.
 278          */
 279         if (ri->guid != NULL) {
 280                 StrBufSpaceToBlank(ri->guid);
 281                 StrBufTrim(ri->guid);
 282                 guid = NewStrBufPlain(HKEY("rss/"));
 283                 StrBufAppendBuf(guid, ri->guid, 0);
 284         }
 285         else {
 286                 MD5Init(&md5context);
 287                 if (ri->title != NULL) {
 288                         MD5Update(&md5context, (const unsigned char*)ChrPtr(ri->title), StrLength(ri->title));
 289                 }
 290                 if (ri->link != NULL) {
 291                         MD5Update(&md5context, (const unsigned char*)ChrPtr(ri->link), StrLength(ri->link));
 292                 }
 293                 MD5Final(rawdigest, &md5context);
 294                 guid = NewStrBufPlain(NULL, MD5_DIGEST_LEN * 2 + 12 /* _rss2ctdl*/);
 295                 StrBufHexEscAppend(guid, NULL, rawdigest, MD5_DIGEST_LEN);
 296                 StrBufAppendBufPlain(guid, HKEY("_rss2ctdl"), 0);
 297         }
 298
 299         /* translate Item into message. */
 300         syslog(LOG_DEBUG, "RSS: translating item...\n");
 301         if (ri->description == NULL) ri->description = NewStrBufPlain(HKEY(""));
 302         StrBufSpaceToBlank(ri->description);
 303         msg = malloc(sizeof(struct CtdlMessage));
 304         memset(msg, 0, sizeof(struct CtdlMessage));
 305         msg->cm_magic = CTDLMESSAGE_MAGIC;
 306         msg->cm_anon_type = MES_NORMAL;
 307         msg->cm_format_type = FMT_RFC822;
 308
 309         if (ri->guid != NULL) {
 310                 msg->cm_fields['E'] = strdup(ChrPtr(ri->guid));
 311         }
 312
 313         if (ri->author_or_creator != NULL) {
 314                 char *From;
 315                 StrBuf *Encoded = NULL;
 316                 int FromAt;
 317
 318                 From = html_to_ascii(ChrPtr(ri->author_or_creator),
 319                                      StrLength(ri->author_or_creator),
 320                                      512, 0);
 321                 StrBufPlain(ri->author_or_creator, From, -1);
 322                 StrBufTrim(ri->author_or_creator);
 323                 free(From);
 324
 325                 FromAt = strchr(ChrPtr(ri->author_or_creator), '@') != NULL;
 326                 if (!FromAt && StrLength (ri->author_email) > 0)
 327                 {
 328                         StrBufRFC2047encode(&Encoded, ri->author_or_creator);
 329                         msg->cm_fields['A'] = SmashStrBuf(&Encoded);
 330                         msg->cm_fields['P'] = SmashStrBuf(&ri->author_email);
 331                 }
 332                 else
 333                 {
 334                         if (FromAt)
 335                                 msg->cm_fields['P'] = SmashStrBuf(&ri->author_or_creator);
 336                         else
 337                         {
 338                                 StrBufRFC2047encode(&Encoded, ri->author_or_creator);
 339                                 msg->cm_fields['A'] = SmashStrBuf(&Encoded);
 340                                 msg->cm_fields['P'] = strdup("rss@localhost");
 341                         }
 342                 }
 343         }
 344         else {
 345                 msg->cm_fields['A'] = strdup("rss");
 346         }
 347
 348         msg->cm_fields['N'] = strdup(NODENAME);
 349         if (ri->title != NULL) {
 350                 long len;
 351                 char *Sbj;
 352                 StrBuf *Encoded, *QPEncoded;
 353
 354                 QPEncoded = NULL;
 355                 StrBufSpaceToBlank(ri->title);
 356                 len = StrLength(ri->title);
 357                 Sbj = html_to_ascii(ChrPtr(ri->title), len, 512, 0);
 358                 len = strlen(Sbj);
 359                 if (Sbj[len - 1] == '\n')
 360                 {
 361                         len --;
 362                         Sbj[len] = '\0';
 363                 }
 364                 Encoded = NewStrBufPlain(Sbj, len);
 365                 free(Sbj);
 366
 367                 StrBufTrim(Encoded);
 368                 StrBufRFC2047encode(&QPEncoded, Encoded);
 369
 370                 msg->cm_fields['U'] = SmashStrBuf(&QPEncoded);
 371                 FreeStrBuf(&Encoded);
 372         }
 373         msg->cm_fields['T'] = malloc(64);
 374         snprintf(msg->cm_fields['T'], 64, "%ld", ri->pubdate);
 375         if (ri->channel_title != NULL) {
 376                 if (StrLength(ri->channel_title) > 0) {
 377                         msg->cm_fields['O'] = strdup(ChrPtr(ri->channel_title));
 378                 }
 379         }
 380         if (ri->link == NULL)
 381                 ri->link = NewStrBufPlain(HKEY(""));
 382
 383 #if 0 /* temporarily disable shorter urls. */
 384         msg->cm_fields[TMP_SHORTER_URLS] = GetShorterUrls(ri->description);
 385 #endif
 386
 387         msglen += 1024 + StrLength(ri->link) + StrLength(ri->description) ;
 388
 389         Message = NewStrBufPlain(NULL, StrLength(ri->description));
 390
 391         StrBufPlain(Message, HKEY(
 392                             "Content-type: text/html; charset=\"UTF-8\"\r\n\r\n"
 393                             "<html><body>\n"));
 394 #if 0 /* disable shorter url for now. */
 395         msg->cm_fields[TMP_SHORTER_URL_OFFSET] = StrLength(Message);
 396 #endif
 397         StrBufAppendBuf(Message, ri->description, 0);
 398         StrBufAppendBufPlain(Message, HKEY("<br><br>\n"), 0);
 399
 400         AppendLink(Message, ri->link, ri->linkTitle, NULL);
 401         AppendLink(Message, ri->reLink, ri->reLinkTitle, "Reply to this");
 402         StrBufAppendBufPlain(Message, HKEY("</body></html>\n"), 0);
 403
 404         RSSQueueSaveMessage(msg, recp, guid, Message, Cfg);
 405 }
 406
 407
 408
 409 /*
 410  * Begin a feed parse
 411  */
 412 int rss_do_fetching(rss_aggregator *Cfg)
 413 {
 414         rss_item *ri;
 415
 416         time_t now;
 417         AsyncIO *IO;
 418
 419         now = time(NULL);
 420
 421         if ((Cfg->next_poll != 0) && (now < Cfg->next_poll))
 422                 return 0;
 423         Cfg->RefCount = 1;
 424
 425         ri = (rss_item*) malloc(sizeof(rss_item));
 426         memset(ri, 0, sizeof(rss_item));
 427         Cfg->Item = ri;
 428         IO = &Cfg->IO;
 429         IO->CitContext = CloneContext(CC);
 430         IO->Data = Cfg;
 431
 432
 433         syslog(LOG_DEBUG, "Fetching RSS feed <%s>\n", ChrPtr(Cfg->Url));
 434         ParseURL(&IO->ConnectMe, Cfg->Url, 80);
 435         CurlPrepareURL(IO->ConnectMe);
 436
 437         if (! evcurl_init(IO,
 438 //                        Ctx,
 439                           NULL,
 440                           "Citadel RSS Client",
 441                           ParseRSSReply,
 442                           RSSAggregatorTerminate))
 443         {
 444                 syslog(LOG_DEBUG, "Unable to initialize libcurl.\n");
 445                 return 0;
 446         }
 447
 448         evcurl_handle_start(IO);
 449         return 1;
 450 }
 451
 452
 453
 454 void DeleteRssCfg(void *vptr)
 455 {
 456         rss_aggregator *rncptr = (rss_aggregator *)vptr;
 457
 458         FreeStrBuf(&rncptr->Url);
 459         FreeStrBuf(&rncptr->rooms);
 460         FreeStrBuf(&rncptr->CData);
 461         FreeStrBuf(&rncptr->Key);
 462
 463         DeleteHash(&rncptr->OtherQRnumbers);
 464
 465         if (rncptr->Item != NULL)
 466         {
 467                 FreeStrBuf(&rncptr->Item->guid);
 468                 FreeStrBuf(&rncptr->Item->title);
 469                 FreeStrBuf(&rncptr->Item->link);
 470                 FreeStrBuf(&rncptr->Item->linkTitle);
 471                 FreeStrBuf(&rncptr->Item->reLink);
 472                 FreeStrBuf(&rncptr->Item->reLinkTitle);
 473                 FreeStrBuf(&rncptr->Item->description);
 474                 FreeStrBuf(&rncptr->Item->channel_title);
 475                 FreeStrBuf(&rncptr->Item->author_or_creator);
 476                 FreeStrBuf(&rncptr->Item->author_url);
 477                 FreeStrBuf(&rncptr->Item->author_email);
 478
 479                 free(rncptr->Item);
 480         }
 481         free(rncptr);
 482 }
 483
 484 eNextState RSSAggregatorTerminate(AsyncIO *IO)
 485 {
 486         rss_aggregator *rncptr = (rss_aggregator *)IO->Data;
 487         HashPos *At;
 488         long HKLen;
 489         const char *HK;
 490         void *vData;
 491
 492         citthread_mutex_lock(&RSSQueueMutex);
 493         rncptr->RefCount --;
 494         if (rncptr->RefCount == 0)
 495         {
 496                 UnlinkRSSAggregator(rncptr);
 497
 498         }
 499         citthread_mutex_unlock(&RSSQueueMutex);
 500 /*
 501         At = GetNewHashPos(RSSFetchUrls, 0);
 502
 503         citthread_mutex_lock(&RSSQueueMutex);
 504         GetHashPosFromKey(RSSFetchUrls, SKEY(rncptr->Url), At);
 505         GetHashPos(RSSFetchUrls, At, &HKLen, &HK, &vData);
 506         DeleteEntryFromHash(RSSFetchUrls, At);
 507         citthread_mutex_unlock(&RSSQueueMutex);
 508
 509         DeleteHashPos(&At);
 510 */
 511         return eAbort;
 512 }
 513
 514 /*
 515  * Scan a room's netconfig to determine whether it is requesting any RSS feeds
 516  */
 517 void rssclient_scan_room(struct ctdlroom *qrbuf, void *data)
 518 {
 519         StrBuf *CfgData;
 520         StrBuf *CfgType;
 521         StrBuf *Line;
 522         rss_room_counter *Count = NULL;
 523         struct stat statbuf;
 524         char filename[PATH_MAX];
 525         int  fd;
 526         int Done;
 527         rss_aggregator *rncptr = NULL;
 528         rss_aggregator *use_this_rncptr = NULL;
 529         void *vptr;
 530         const char *CfgPtr, *lPtr;
 531         const char *Err;
 532
 533         citthread_mutex_lock(&RSSQueueMutex);
 534         if (GetHash(RSSQueueRooms, LKEY(qrbuf->QRnumber), &vptr))
 535         {
 536                 syslog(LOG_DEBUG,
 537                               "rssclient: [%ld] %s already in progress.\n",
 538                               qrbuf->QRnumber,
 539                               qrbuf->QRname);
 540                 citthread_mutex_unlock(&RSSQueueMutex);
 541                 return;
 542         }
 543         citthread_mutex_unlock(&RSSQueueMutex);
 544
 545         assoc_file_name(filename, sizeof filename, qrbuf, ctdl_netcfg_dir);
 546
 547         if (CtdlThreadCheckStop())
 548                 return;
 549
 550         /* Only do net processing for rooms that have netconfigs */
 551         fd = open(filename, 0);
 552         if (fd <= 0) {
 553                 //syslog(LOG_DEBUG, "rssclient: %s no config.\n", qrbuf->QRname);
 554                 return;
 555         }
 556         if (CtdlThreadCheckStop())
 557                 return;
 558         if (fstat(fd, &statbuf) == -1) {
 559                 syslog(LOG_DEBUG, "ERROR: could not stat configfile '%s' - %s\n",
 560                         filename, strerror(errno));
 561                 return;
 562         }
 563         if (CtdlThreadCheckStop())
 564                 return;
 565         CfgData = NewStrBufPlain(NULL, statbuf.st_size + 1);
 566         if (StrBufReadBLOB(CfgData, &fd, 1, statbuf.st_size, &Err) < 0) {
 567                 close(fd);
 568                 FreeStrBuf(&CfgData);
 569                 syslog(LOG_DEBUG, "ERROR: reading config '%s' - %s<br>\n",
 570                         filename, strerror(errno));
 571                 return;
 572         }
 573         close(fd);
 574         if (CtdlThreadCheckStop())
 575                 return;
 576
 577         CfgPtr = NULL;
 578         CfgType = NewStrBuf();
 579         Line = NewStrBufPlain(NULL, StrLength(CfgData));
 580         Done = 0;
 581         while (!Done)
 582         {
 583             Done = StrBufSipLine(Line, CfgData, &CfgPtr) == 0;
 584             if (StrLength(Line) > 0)
 585             {
 586                 lPtr = NULL;
 587                 StrBufExtract_NextToken(CfgType, Line, &lPtr, '|');
 588                 if (!strcasecmp("rssclient", ChrPtr(CfgType)))
 589                 {
 590                     if (Count == NULL)
 591                     {
 592                         Count = malloc(sizeof(rss_room_counter));
 593                         Count->count = 0;
 594                     }
 595                     Count->count ++;
 596                     rncptr = (rss_aggregator *) malloc(sizeof(rss_aggregator));
 597                     memset (rncptr, 0, sizeof(rss_aggregator));
 598                     rncptr->roomlist_parts = 1;
 599                     rncptr->Url = NewStrBuf();
 600                     StrBufExtract_NextToken(rncptr->Url, Line, &lPtr, '|');
 601
 602                     citthread_mutex_lock(&RSSQueueMutex);
 603                     GetHash(RSSFetchUrls, SKEY(rncptr->Url), &vptr);
 604                     use_this_rncptr = (rss_aggregator *)vptr;
 605                     if (use_this_rncptr != NULL)
 606                     {
 607                             /* mustn't attach to an active session */
 608                             if (use_this_rncptr->RefCount > 0)
 609                             {
 610                                     DeleteRssCfg(rncptr);
 611                                     Count->count--;
 612                             }
 613                             else
 614                             {
 615                                     long *QRnumber;
 616                                     StrBufAppendBufPlain(use_this_rncptr->rooms,
 617                                                          qrbuf->QRname,
 618                                                          -1, 0);
 619                                     if (use_this_rncptr->roomlist_parts == 1)
 620                                     {
 621                                             use_this_rncptr->OtherQRnumbers = NewHash(1, lFlathash);
 622                                     }
 623                                     QRnumber = (long*)malloc(sizeof(long));
 624                                     *QRnumber = qrbuf->QRnumber;
 625                                     Put(use_this_rncptr->OtherQRnumbers, LKEY(qrbuf->QRnumber), QRnumber, NULL);
 626                                     use_this_rncptr->roomlist_parts++;
 627                             }
 628                             citthread_mutex_unlock(&RSSQueueMutex);
 629                             continue;
 630                     }
 631                     citthread_mutex_unlock(&RSSQueueMutex);
 632
 633                     rncptr->ItemType = RSS_UNSET;
 634
 635                     rncptr->rooms = NewStrBufPlain(qrbuf->QRname, -1);
 636
 637                     citthread_mutex_lock(&RSSQueueMutex);
 638                     Put(RSSFetchUrls, SKEY(rncptr->Url), rncptr, DeleteRssCfg);
 639                     citthread_mutex_unlock(&RSSQueueMutex);
 640                 }
 641             }
 642         }
 643         if (Count != NULL)
 644         {
 645                 Count->QRnumber = qrbuf->QRnumber;
 646                 citthread_mutex_lock(&RSSQueueMutex);
 647                 syslog(LOG_DEBUG, "rssclient: [%ld] %s now starting.\n",
 648                               qrbuf->QRnumber, qrbuf->QRname);
 649                 Put(RSSQueueRooms, LKEY(qrbuf->QRnumber), Count, NULL);
 650                 citthread_mutex_unlock(&RSSQueueMutex);
 651         }
 652         FreeStrBuf(&CfgData);
 653         FreeStrBuf(&CfgType);
 654         FreeStrBuf(&Line);
 655 }
 656
 657 /*
 658  * Scan for rooms that have RSS client requests configured
 659  */
 660 void rssclient_scan(void) {
 661         static int doing_rssclient = 0;
 662         rss_aggregator *rptr = NULL;
 663         void *vrptr = NULL;
 664         HashPos  *it;
 665         long len;
 666         const char *Key;
 667
 668         /*
 669          * This is a simple concurrency check to make sure only one rssclient run
 670          * is done at a time.  We could do this with a mutex, but since we
 671          * don't really require extremely fine granularity here, we'll do it
 672          * with a static variable instead.
 673          */
 674         if (doing_rssclient) return;
 675         doing_rssclient = 1;
 676
 677         syslog(LOG_DEBUG, "rssclient started\n");
 678         CtdlForEachRoom(rssclient_scan_room, NULL);
 679
 680         citthread_mutex_lock(&RSSQueueMutex);
 681
 682         it = GetNewHashPos(RSSFetchUrls, 0);
 683         while (GetNextHashPos(RSSFetchUrls, it, &len, &Key, &vrptr) &&
 684                (vrptr != NULL)) {
 685                 rptr = (rss_aggregator *)vrptr;
 686                 if (rptr->RefCount == 0)
 687                         if (!rss_do_fetching(rptr))
 688                                 UnlinkRSSAggregator(rptr);
 689         }
 690         DeleteHashPos(&it);
 691         citthread_mutex_unlock(&RSSQueueMutex);
 692
 693         syslog(LOG_DEBUG, "rssclient ended\n");
 694         doing_rssclient = 0;
 695         return;
 696 }
 697
 698 void rss_cleanup(void)
 699 {
 700         citthread_mutex_destroy(&RSSQueueMutex);
 701         DeleteHash(&RSSFetchUrls);
 702         DeleteHash(&RSSQueueRooms);
 703 }
 704
 705
 706 CTDL_MODULE_INIT(rssclient)
 707 {
 708         if (threading)
 709         {
 710                 citthread_mutex_init(&RSSQueueMutex, NULL);
 711                 RSSQueueRooms = NewHash(1, lFlathash);
 712                 RSSFetchUrls = NewHash(1, NULL);
 713                 syslog(LOG_INFO, "%s\n", curl_version());
 714                 CtdlRegisterSessionHook(rssclient_scan, EVT_TIMER);
 715                 CtdlRegisterCleanupHook(rss_cleanup);
 716         }
 717         return "rssclient";
 718 }