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