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