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 time_t last_run = 0L;
  66
  67 pthread_mutex_t RSSQueueMutex; /* locks the access to the following vars: */
  68 HashList *RSSQueueRooms = NULL; /* rss_room_counter */
  69 HashList *RSSFetchUrls = NULL; /* -> rss_aggregator; ->RefCount access to be locked too. */
  70
  71 eNextState RSSAggregatorTerminate(AsyncIO *IO);
  72
  73 struct CitContext rss_CC;
  74
  75 struct rssnetcfg *rnclist = NULL;
  76 void AppendLink(StrBuf *Message, StrBuf *link, StrBuf *LinkTitle, const char *Title)
  77 {
  78         if (StrLength(link) > 0)
  79         {
  80                 StrBufAppendBufPlain(Message, HKEY("<a href=\""), 0);
  81                 StrBufAppendBuf(Message, link, 0);
  82                 StrBufAppendBufPlain(Message, HKEY("\">"), 0);
  83                 if (StrLength(LinkTitle) > 0)
  84                         StrBufAppendBuf(Message, LinkTitle, 0);
  85                 else if ((Title != NULL) && !IsEmptyStr(Title))
  86                         StrBufAppendBufPlain(Message, Title, -1, 0);
  87                 else
  88                         StrBufAppendBuf(Message, link, 0);
  89                 StrBufAppendBufPlain(Message, HKEY("</a><br>\n"), 0);
  90         }
  91 }
  92 typedef struct __networker_save_message {
  93         AsyncIO IO;
  94         struct CtdlMessage *Msg;
  95         struct recptypes *recp;
  96         rss_aggregator *Cfg;
  97         StrBuf *MsgGUID;
  98         StrBuf *Message;
  99         struct UseTable ut;
 100 } networker_save_message;
 101
 102
 103 void DeleteRoomReference(long QRnumber)
 104 {
 105         HashPos *At;
 106         long HKLen;
 107         const char *HK;
 108         void *vData = NULL;
 109         rss_room_counter *pRoomC;
 110
 111         At = GetNewHashPos(RSSQueueRooms, 0);
 112
 113         GetHashPosFromKey(RSSQueueRooms, LKEY(QRnumber), At);
 114         GetHashPos(RSSQueueRooms, At, &HKLen, &HK, &vData);
 115         if (vData != NULL)
 116         {
 117                 pRoomC = (rss_room_counter *) vData;
 118                 pRoomC->count --;
 119                 if (pRoomC->count == 0)
 120                         DeleteEntryFromHash(RSSQueueRooms, At);
 121         }
 122         DeleteHashPos(&At);
 123 }
 124
 125 void UnlinkRooms(rss_aggregator *Cfg)
 126 {
 127
 128         DeleteRoomReference(Cfg->QRnumber);
 129         if (Cfg->OtherQRnumbers != NULL)
 130         {
 131                 long HKLen;
 132                 const char *HK;
 133                 HashPos *At;
 134                 void *vData;
 135
 136                 At = GetNewHashPos(Cfg->OtherQRnumbers, 0);
 137                 while (GetNextHashPos(Cfg->OtherQRnumbers, At, &HKLen, &HK, &vData) &&
 138                        (vData != NULL))
 139                 {
 140                         long *lData = (long*) vData;
 141                         DeleteRoomReference(*lData);
 142                 }
 143 /*
 144                 if (server_shutting_down)
 145                         break; / * TODO */
 146
 147                 DeleteHashPos(&At);
 148         }
 149 }
 150
 151 void UnlinkRSSAggregator(rss_aggregator *Cfg)
 152 {
 153         HashPos *At;
 154
 155         UnlinkRooms(Cfg);
 156
 157         At = GetNewHashPos(RSSFetchUrls, 0);
 158         if (GetHashPosFromKey(RSSFetchUrls, SKEY(Cfg->Url), At) == 0)
 159         {
 160                 DeleteEntryFromHash(RSSFetchUrls, At);
 161         }
 162         DeleteHashPos(&At);
 163         last_run = time(NULL);
 164 }
 165
 166 eNextState FreeNetworkSaveMessage (AsyncIO *IO)
 167 {
 168         networker_save_message *Ctx = (networker_save_message *) IO->Data;
 169
 170         pthread_mutex_lock(&RSSQueueMutex);
 171         Ctx->Cfg->RefCount --;
 172
 173         if (Ctx->Cfg->RefCount == 0)
 174         {
 175                 UnlinkRSSAggregator(Ctx->Cfg);
 176
 177         }
 178         pthread_mutex_unlock(&RSSQueueMutex);
 179
 180         CtdlFreeMessage(Ctx->Msg);
 181         free_recipients(Ctx->recp);
 182         FreeStrBuf(&Ctx->Message);
 183         FreeStrBuf(&Ctx->MsgGUID);
 184         ((struct CitContext*)IO->CitContext)->state = CON_IDLE;
 185         ((struct CitContext*)IO->CitContext)->kill_me = 1;
 186         free(Ctx);
 187         last_run = time(NULL);
 188         return eAbort;
 189 }
 190
 191 eNextState AbortNetworkSaveMessage (AsyncIO *IO)
 192 {
 193         return eAbort; ///TODO
 194 }
 195
 196 eNextState RSSSaveMessage(AsyncIO *IO)
 197 {
 198         networker_save_message *Ctx = (networker_save_message *) IO->Data;
 199
 200         Ctx->Msg->cm_fields['M'] = SmashStrBuf(&Ctx->Message);
 201
 202         CtdlSubmitMsg(Ctx->Msg, Ctx->recp, NULL, 0);
 203
 204         /* write the uidl to the use table so we don't store this item again */
 205         cdb_store(CDB_USETABLE, SKEY(Ctx->MsgGUID), &Ctx->ut, sizeof(struct UseTable) );
 206
 207         return eTerminateConnection;
 208 }
 209
 210 eNextState RSS_FetchNetworkUsetableEntry(AsyncIO *IO)
 211 {
 212         struct cdbdata *cdbut;
 213         networker_save_message *Ctx = (networker_save_message *) IO->Data;
 214
 215         /* Find out if we've already seen this item */
 216         strcpy(Ctx->ut.ut_msgid, ChrPtr(Ctx->MsgGUID)); /// TODO
 217         Ctx->ut.ut_timestamp = time(NULL);
 218
 219         cdbut = cdb_fetch(CDB_USETABLE, SKEY(Ctx->MsgGUID));
 220 #ifndef DEBUG_RSS
 221         if (cdbut != NULL) {
 222                 /* Item has already been seen */
 223                 syslog(LOG_DEBUG, "%s has already been seen\n", ChrPtr(Ctx->MsgGUID));
 224                 cdb_free(cdbut);
 225
 226                 /* rewrite the record anyway, to update the timestamp */
 227                 cdb_store(CDB_USETABLE,
 228                           SKEY(Ctx->MsgGUID),
 229                           &Ctx->ut, sizeof(struct UseTable) );
 230                 return eAbort;
 231         }
 232         else
 233 #endif
 234         {
 235                 NextDBOperation(IO, RSSSaveMessage);
 236                 return eSendMore;
 237         }
 238 }
 239 void RSSQueueSaveMessage(struct CtdlMessage *Msg, struct recptypes *recp, StrBuf *MsgGUID, StrBuf *MessageBody, rss_aggregator *Cfg)
 240 {
 241         networker_save_message *Ctx;
 242
 243         Ctx = (networker_save_message *) malloc(sizeof(networker_save_message));
 244         memset(Ctx, 0, sizeof(networker_save_message));
 245
 246         Ctx->MsgGUID = MsgGUID;
 247         Ctx->Message = MessageBody;
 248         Ctx->Msg = Msg;
 249         Ctx->Cfg = Cfg;
 250         Ctx->recp = recp;
 251         Ctx->IO.Data = Ctx;
 252         Ctx->IO.CitContext = CloneContext(&rss_CC);
 253         Ctx->IO.Terminate = FreeNetworkSaveMessage;
 254         Ctx->IO.ShutdownAbort = AbortNetworkSaveMessage;
 255         QueueDBOperation(&Ctx->IO, RSS_FetchNetworkUsetableEntry);
 256 }
 257
 258
 259 /*
 260  * Commit a fetched and parsed RSS item to disk
 261  */
 262 void rss_save_item(rss_item *ri, rss_aggregator *Cfg)
 263 {
 264
 265         struct MD5Context md5context;
 266         u_char rawdigest[MD5_DIGEST_LEN];
 267         struct CtdlMessage *msg;
 268         struct recptypes *recp = NULL;
 269         int msglen = 0;
 270         StrBuf *Message;
 271         StrBuf *guid;
 272         StrBuf *Buf;
 273
 274         recp = (struct recptypes *) malloc(sizeof(struct recptypes));
 275         if (recp == NULL) return;
 276         memset(recp, 0, sizeof(struct recptypes));
 277         Buf = NewStrBufDup(Cfg->rooms);
 278         recp->recp_room = SmashStrBuf(&Buf);
 279         recp->num_room = Cfg->roomlist_parts;
 280         recp->recptypes_magic = RECPTYPES_MAGIC;
 281
 282         Cfg->RefCount ++;
 283         /* Construct a GUID to use in the S_USETABLE table.
 284          * If one is not present in the item itself, make one up.
 285          */
 286         if (ri->guid != NULL) {
 287                 StrBufSpaceToBlank(ri->guid);
 288                 StrBufTrim(ri->guid);
 289                 guid = NewStrBufPlain(HKEY("rss/"));
 290                 StrBufAppendBuf(guid, ri->guid, 0);
 291         }
 292         else {
 293                 MD5Init(&md5context);
 294                 if (ri->title != NULL) {
 295                         MD5Update(&md5context, (const unsigned char*)ChrPtr(ri->title), StrLength(ri->title));
 296                 }
 297                 if (ri->link != NULL) {
 298                         MD5Update(&md5context, (const unsigned char*)ChrPtr(ri->link), StrLength(ri->link));
 299                 }
 300                 MD5Final(rawdigest, &md5context);
 301                 guid = NewStrBufPlain(NULL, MD5_DIGEST_LEN * 2 + 12 /* _rss2ctdl*/);
 302                 StrBufHexEscAppend(guid, NULL, rawdigest, MD5_DIGEST_LEN);
 303                 StrBufAppendBufPlain(guid, HKEY("_rss2ctdl"), 0);
 304         }
 305
 306         /* translate Item into message. */
 307         syslog(LOG_DEBUG, "RSS: translating item...\n");
 308         if (ri->description == NULL) ri->description = NewStrBufPlain(HKEY(""));
 309         StrBufSpaceToBlank(ri->description);
 310         msg = malloc(sizeof(struct CtdlMessage));
 311         memset(msg, 0, sizeof(struct CtdlMessage));
 312         msg->cm_magic = CTDLMESSAGE_MAGIC;
 313         msg->cm_anon_type = MES_NORMAL;
 314         msg->cm_format_type = FMT_RFC822;
 315
 316         if (ri->guid != NULL) {
 317                 msg->cm_fields['E'] = strdup(ChrPtr(ri->guid));
 318         }
 319
 320         if (ri->author_or_creator != NULL) {
 321                 char *From;
 322                 StrBuf *Encoded = NULL;
 323                 int FromAt;
 324
 325                 From = html_to_ascii(ChrPtr(ri->author_or_creator),
 326                                      StrLength(ri->author_or_creator),
 327                                      512, 0);
 328                 StrBufPlain(ri->author_or_creator, From, -1);
 329                 StrBufTrim(ri->author_or_creator);
 330                 free(From);
 331
 332                 FromAt = strchr(ChrPtr(ri->author_or_creator), '@') != NULL;
 333                 if (!FromAt && StrLength (ri->author_email) > 0)
 334                 {
 335                         StrBufRFC2047encode(&Encoded, ri->author_or_creator);
 336                         msg->cm_fields['A'] = SmashStrBuf(&Encoded);
 337                         msg->cm_fields['P'] = SmashStrBuf(&ri->author_email);
 338                 }
 339                 else
 340                 {
 341                         if (FromAt)
 342                         {
 343                                 msg->cm_fields['A'] = SmashStrBuf(&ri->author_or_creator);
 344                                 msg->cm_fields['P'] = strdup(msg->cm_fields['A']);
 345                         }
 346                         else
 347                         {
 348                                 StrBufRFC2047encode(&Encoded, ri->author_or_creator);
 349                                 msg->cm_fields['A'] = SmashStrBuf(&Encoded);
 350                                 msg->cm_fields['P'] = strdup("rss@localhost");
 351
 352                         }
 353                         if (ri->pubdate <= 0) {
 354                                 ri->pubdate = time(NULL);
 355                         }
 356                 }
 357         }
 358         else {
 359                 msg->cm_fields['A'] = strdup("rss");
 360         }
 361
 362         msg->cm_fields['N'] = strdup(NODENAME);
 363         if (ri->title != NULL) {
 364                 long len;
 365                 char *Sbj;
 366                 StrBuf *Encoded, *QPEncoded;
 367
 368                 QPEncoded = NULL;
 369                 StrBufSpaceToBlank(ri->title);
 370                 len = StrLength(ri->title);
 371                 Sbj = html_to_ascii(ChrPtr(ri->title), len, 512, 0);
 372                 len = strlen(Sbj);
 373                 if (Sbj[len - 1] == '\n')
 374                 {
 375                         len --;
 376                         Sbj[len] = '\0';
 377                 }
 378                 Encoded = NewStrBufPlain(Sbj, len);
 379                 free(Sbj);
 380
 381                 StrBufTrim(Encoded);
 382                 StrBufRFC2047encode(&QPEncoded, Encoded);
 383
 384                 msg->cm_fields['U'] = SmashStrBuf(&QPEncoded);
 385                 FreeStrBuf(&Encoded);
 386         }
 387         msg->cm_fields['T'] = malloc(64);
 388         snprintf(msg->cm_fields['T'], 64, "%ld", ri->pubdate);
 389         if (ri->channel_title != NULL) {
 390                 if (StrLength(ri->channel_title) > 0) {
 391                         msg->cm_fields['O'] = strdup(ChrPtr(ri->channel_title));
 392                 }
 393         }
 394         if (ri->link == NULL)
 395                 ri->link = NewStrBufPlain(HKEY(""));
 396
 397 #if 0 /* temporarily disable shorter urls. */
 398         msg->cm_fields[TMP_SHORTER_URLS] = GetShorterUrls(ri->description);
 399 #endif
 400
 401         msglen += 1024 + StrLength(ri->link) + StrLength(ri->description) ;
 402
 403         Message = NewStrBufPlain(NULL, StrLength(ri->description));
 404
 405         StrBufPlain(Message, HKEY(
 406                             "Content-type: text/html; charset=\"UTF-8\"\r\n\r\n"
 407                             "<html><body>\n"));
 408 #if 0 /* disable shorter url for now. */
 409         msg->cm_fields[TMP_SHORTER_URL_OFFSET] = StrLength(Message);
 410 #endif
 411         StrBufAppendBuf(Message, ri->description, 0);
 412         StrBufAppendBufPlain(Message, HKEY("<br><br>\n"), 0);
 413
 414         AppendLink(Message, ri->link, ri->linkTitle, NULL);
 415         AppendLink(Message, ri->reLink, ri->reLinkTitle, "Reply to this");
 416         StrBufAppendBufPlain(Message, HKEY("</body></html>\n"), 0);
 417
 418         RSSQueueSaveMessage(msg, recp, guid, Message, Cfg);
 419 }
 420
 421
 422
 423 /*
 424  * Begin a feed parse
 425  */
 426 int rss_do_fetching(rss_aggregator *Cfg)
 427 {
 428         rss_item *ri;
 429
 430         time_t now;
 431         AsyncIO *IO;
 432
 433         now = time(NULL);
 434
 435         if ((Cfg->next_poll != 0) && (now < Cfg->next_poll))
 436                 return 0;
 437         Cfg->RefCount = 1;
 438
 439         ri = (rss_item*) malloc(sizeof(rss_item));
 440         memset(ri, 0, sizeof(rss_item));
 441         Cfg->Item = ri;
 442         IO = &Cfg->IO;
 443         IO->CitContext = CloneContext(&rss_CC);
 444         IO->Data = Cfg;
 445
 446
 447         syslog(LOG_DEBUG, "Fetching RSS feed <%s>\n", ChrPtr(Cfg->Url));
 448         ParseURL(&IO->ConnectMe, Cfg->Url, 80);
 449         CurlPrepareURL(IO->ConnectMe);
 450
 451         if (! evcurl_init(IO,
 452 //                        Ctx,
 453                           NULL,
 454                           "Citadel RSS Client",
 455                           ParseRSSReply,
 456                           RSSAggregatorTerminate))
 457         {
 458                 syslog(LOG_DEBUG, "Unable to initialize libcurl.\n");
 459                 return 0;
 460         }
 461
 462         QueueCurlContext(IO);
 463         return 1;
 464 }
 465
 466
 467 void DeleteRssCfg(void *vptr)
 468 {
 469         rss_aggregator *rncptr = (rss_aggregator *)vptr;
 470
 471         FreeStrBuf(&rncptr->Url);
 472         FreeStrBuf(&rncptr->rooms);
 473         FreeStrBuf(&rncptr->CData);
 474         FreeStrBuf(&rncptr->Key);
 475         FreeStrBuf(&rncptr->IO.HttpReq.ReplyData);
 476         DeleteHash(&rncptr->OtherQRnumbers);
 477         FreeURL(&rncptr->IO.ConnectMe);
 478
 479         if (rncptr->Item != NULL)
 480         {
 481                 FreeStrBuf(&rncptr->Item->guid);
 482                 FreeStrBuf(&rncptr->Item->title);
 483                 FreeStrBuf(&rncptr->Item->link);
 484                 FreeStrBuf(&rncptr->Item->linkTitle);
 485                 FreeStrBuf(&rncptr->Item->reLink);
 486                 FreeStrBuf(&rncptr->Item->reLinkTitle);
 487                 FreeStrBuf(&rncptr->Item->description);
 488                 FreeStrBuf(&rncptr->Item->channel_title);
 489                 FreeStrBuf(&rncptr->Item->author_or_creator);
 490                 FreeStrBuf(&rncptr->Item->author_url);
 491                 FreeStrBuf(&rncptr->Item->author_email);
 492
 493                 free(rncptr->Item);
 494         }
 495         free(rncptr);
 496 }
 497
 498 eNextState RSSAggregatorTerminate(AsyncIO *IO)
 499 {
 500         rss_aggregator *rncptr = (rss_aggregator *)IO->Data;
 501
 502         HashPos *At;
 503         long HKLen;
 504         const char *HK;
 505         void *vData;
 506
 507         pthread_mutex_lock(&RSSQueueMutex);
 508         rncptr->RefCount --;
 509         if (rncptr->RefCount == 0)
 510         {
 511                 UnlinkRSSAggregator(rncptr);
 512
 513         }
 514         pthread_mutex_unlock(&RSSQueueMutex);
 515
 516         At = GetNewHashPos(RSSFetchUrls, 0);
 517
 518         pthread_mutex_lock(&RSSQueueMutex);
 519         GetHashPosFromKey(RSSFetchUrls, SKEY(rncptr->Url), At);
 520         GetHashPos(RSSFetchUrls, At, &HKLen, &HK, &vData);
 521         DeleteEntryFromHash(RSSFetchUrls, At);
 522         pthread_mutex_unlock(&RSSQueueMutex);
 523
 524         DeleteHashPos(&At);
 525         return eAbort;
 526 }
 527
 528 /*
 529  * Scan a room's netconfig to determine whether it is requesting any RSS feeds
 530  */
 531 void rssclient_scan_room(struct ctdlroom *qrbuf, void *data)
 532 {
 533         StrBuf *CfgData=NULL;
 534         StrBuf *CfgType;
 535         StrBuf *Line;
 536         rss_room_counter *Count = NULL;
 537         struct stat statbuf;
 538         char filename[PATH_MAX];
 539         int  fd;
 540         int Done;
 541         rss_aggregator *rncptr = NULL;
 542         rss_aggregator *use_this_rncptr = NULL;
 543         void *vptr;
 544         const char *CfgPtr, *lPtr;
 545         const char *Err;
 546
 547         pthread_mutex_lock(&RSSQueueMutex);
 548         if (GetHash(RSSQueueRooms, LKEY(qrbuf->QRnumber), &vptr))
 549         {
 550                 syslog(LOG_DEBUG,
 551                               "rssclient: [%ld] %s already in progress.\n",
 552                               qrbuf->QRnumber,
 553                               qrbuf->QRname);
 554                 pthread_mutex_unlock(&RSSQueueMutex);
 555                 return;
 556         }
 557         pthread_mutex_unlock(&RSSQueueMutex);
 558
 559         assoc_file_name(filename, sizeof filename, qrbuf, ctdl_netcfg_dir);
 560
 561         if (server_shutting_down)
 562                 return;
 563
 564         /* Only do net processing for rooms that have netconfigs */
 565         fd = open(filename, 0);
 566         if (fd <= 0) {
 567                 //syslog(LOG_DEBUG, "rssclient: %s no config.\n", qrbuf->QRname);
 568                 return;
 569         }
 570
 571         if (server_shutting_down)
 572                 return;
 573
 574         if (fstat(fd, &statbuf) == -1) {
 575                 syslog(LOG_DEBUG, "ERROR: could not stat configfile '%s' - %s\n",
 576                        filename, strerror(errno));
 577                 return;
 578         }
 579
 580         if (server_shutting_down)
 581                 return;
 582
 583         CfgData = NewStrBufPlain(NULL, statbuf.st_size + 1);
 584
 585         if (StrBufReadBLOB(CfgData, &fd, 1, statbuf.st_size, &Err) < 0) {
 586                 close(fd);
 587                 FreeStrBuf(&CfgData);
 588                 syslog(LOG_DEBUG, "ERROR: reading config '%s' - %s<br>\n",
 589                         filename, strerror(errno));
 590                 return;
 591         }
 592         close(fd);
 593         if (server_shutting_down)
 594                 return;
 595
 596         CfgPtr = NULL;
 597         CfgType = NewStrBuf();
 598         Line = NewStrBufPlain(NULL, StrLength(CfgData));
 599         Done = 0;
 600         while (!Done)
 601         {
 602             Done = StrBufSipLine(Line, CfgData, &CfgPtr) == 0;
 603             if (StrLength(Line) > 0)
 604             {
 605                 lPtr = NULL;
 606                 StrBufExtract_NextToken(CfgType, Line, &lPtr, '|');
 607                 if (!strcasecmp("rssclient", ChrPtr(CfgType)))
 608                 {
 609                     if (Count == NULL)
 610                     {
 611                         Count = malloc(sizeof(rss_room_counter));
 612                         Count->count = 0;
 613                     }
 614                     Count->count ++;
 615                     rncptr = (rss_aggregator *) malloc(sizeof(rss_aggregator));
 616                     memset (rncptr, 0, sizeof(rss_aggregator));
 617                     rncptr->roomlist_parts = 1;
 618                     rncptr->Url = NewStrBuf();
 619                     StrBufExtract_NextToken(rncptr->Url, Line, &lPtr, '|');
 620
 621                     pthread_mutex_lock(&RSSQueueMutex);
 622                     GetHash(RSSFetchUrls, SKEY(rncptr->Url), &vptr);
 623                     use_this_rncptr = (rss_aggregator *)vptr;
 624                     if (use_this_rncptr != NULL)
 625                     {
 626                             /* mustn't attach to an active session */
 627                             if (use_this_rncptr->RefCount > 0)
 628                             {
 629                                     DeleteRssCfg(rncptr);
 630                                     Count->count--;
 631                             }
 632                             else
 633                             {
 634                                     long *QRnumber;
 635                                     StrBufAppendBufPlain(use_this_rncptr->rooms,
 636                                                          qrbuf->QRname,
 637                                                          -1, 0);
 638                                     if (use_this_rncptr->roomlist_parts == 1)
 639                                     {
 640                                             use_this_rncptr->OtherQRnumbers = NewHash(1, lFlathash);
 641                                     }
 642                                     QRnumber = (long*)malloc(sizeof(long));
 643                                     *QRnumber = qrbuf->QRnumber;
 644                                     Put(use_this_rncptr->OtherQRnumbers, LKEY(qrbuf->QRnumber), QRnumber, NULL);
 645                                     use_this_rncptr->roomlist_parts++;
 646                             }
 647                             pthread_mutex_unlock(&RSSQueueMutex);
 648
 649
 650                             FreeStrBuf(&rncptr->Url);
 651                             free(rncptr);
 652                             rncptr = NULL;
 653                             continue;
 654                     }
 655                     pthread_mutex_unlock(&RSSQueueMutex);
 656
 657                     rncptr->ItemType = RSS_UNSET;
 658
 659                     rncptr->rooms = NewStrBufPlain(qrbuf->QRname, -1);
 660
 661                     pthread_mutex_lock(&RSSQueueMutex);
 662                     Put(RSSFetchUrls, SKEY(rncptr->Url), rncptr, DeleteRssCfg);
 663                     pthread_mutex_unlock(&RSSQueueMutex);
 664                 }
 665             }
 666         }
 667         if (Count != NULL)
 668         {
 669                 Count->QRnumber = qrbuf->QRnumber;
 670                 pthread_mutex_lock(&RSSQueueMutex);
 671                 syslog(LOG_DEBUG, "rssclient: [%ld] %s now starting.\n",
 672                               qrbuf->QRnumber, qrbuf->QRname);
 673                 Put(RSSQueueRooms, LKEY(qrbuf->QRnumber), Count, NULL);
 674                 pthread_mutex_unlock(&RSSQueueMutex);
 675         }
 676         FreeStrBuf(&CfgData);
 677         FreeStrBuf(&CfgType);
 678         FreeStrBuf(&Line);
 679 }
 680
 681 /*
 682  * Scan for rooms that have RSS client requests configured
 683  */
 684 void rssclient_scan(void) {
 685         static int doing_rssclient = 0;
 686         rss_aggregator *rptr = NULL;
 687         void *vrptr = NULL;
 688         HashPos  *it;
 689         long len;
 690         const char *Key;
 691
 692         /* Run no more than once every 15 minutes. */
 693         if ((time(NULL) - last_run) < 900) {
 694                 return;
 695         }
 696
 697         /*
 698          * This is a simple concurrency check to make sure only one rssclient run
 699          * is done at a time.  We could do this with a mutex, but since we
 700          * don't really require extremely fine granularity here, we'll do it
 701          * with a static variable instead.
 702          */
 703         if (doing_rssclient) return;
 704         doing_rssclient = 1;
 705
 706         syslog(LOG_DEBUG, "rssclient started\n");
 707         CtdlForEachRoom(rssclient_scan_room, NULL);
 708
 709         pthread_mutex_lock(&RSSQueueMutex);
 710
 711         it = GetNewHashPos(RSSFetchUrls, 0);
 712         while (!server_shutting_down &&
 713                GetNextHashPos(RSSFetchUrls, it, &len, &Key, &vrptr) &&
 714                (vrptr != NULL)) {
 715                 rptr = (rss_aggregator *)vrptr;
 716                 if (rptr->RefCount == 0)
 717                         if (!rss_do_fetching(rptr))
 718                                 UnlinkRSSAggregator(rptr);
 719         }
 720         DeleteHashPos(&it);
 721         pthread_mutex_unlock(&RSSQueueMutex);
 722
 723         syslog(LOG_DEBUG, "rssclient ended\n");
 724         doing_rssclient = 0;
 725         return;
 726 }
 727
 728 void rss_cleanup(void)
 729 {
 730         /* citthread_mutex_destroy(&RSSQueueMutex); TODO */
 731         DeleteHash(&RSSFetchUrls);
 732         DeleteHash(&RSSQueueRooms);
 733 }
 734
 735
 736 CTDL_MODULE_INIT(rssclient)
 737 {
 738         if (threading)
 739         {
 740                 CtdlFillSystemContext(&rss_CC, "rssclient");
 741                 pthread_mutex_init(&RSSQueueMutex, NULL);
 742                 RSSQueueRooms = NewHash(1, lFlathash);
 743                 RSSFetchUrls = NewHash(1, NULL);
 744                 syslog(LOG_INFO, "%s\n", curl_version());
 745                 CtdlRegisterSessionHook(rssclient_scan, EVT_TIMER);
 746                 CtdlRegisterCleanupHook(rss_cleanup);
 747         }
 748         return "rssclient";
 749 }