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 void UnlinkRSSAggregator(rss_aggregator *Cfg)
 149 {
 150         HashPos *At;
 151
 152         UnlinkRooms(Cfg);
 153
 154         At = GetNewHashPos(RSSFetchUrls, 0);
 155         if (GetHashPosFromKey(RSSFetchUrls, SKEY(Cfg->Url), At) == 0)
 156         {
 157                 DeleteEntryFromHash(RSSFetchUrls, At);
 158         }
 159         DeleteHashPos(&At);
 160 }
 161
 162 eNextState FreeNetworkSaveMessage (AsyncIO *IO)
 163 {
 164         networker_save_message *Ctx = (networker_save_message *) IO->Data;
 165
 166         pthread_mutex_lock(&RSSQueueMutex);
 167         Ctx->Cfg->RefCount --;
 168
 169         if (Ctx->Cfg->RefCount == 0)
 170         {
 171                 UnlinkRSSAggregator(Ctx->Cfg);
 172
 173         }
 174         pthread_mutex_unlock(&RSSQueueMutex);
 175
 176         CtdlFreeMessage(Ctx->Msg);
 177         free_recipients(Ctx->recp);
 178         FreeStrBuf(&Ctx->Message);
 179         FreeStrBuf(&Ctx->MsgGUID);
 180         free(Ctx);
 181         return eAbort;
 182 }
 183
 184 eNextState AbortNetworkSaveMessage (AsyncIO *IO)
 185 {
 186         return eAbort; ///TODO
 187 }
 188
 189 eNextState RSSSaveMessage(AsyncIO *IO)
 190 {
 191         networker_save_message *Ctx = (networker_save_message *) IO->Data;
 192
 193         Ctx->Msg->cm_fields['M'] = SmashStrBuf(&Ctx->Message);
 194
 195         CtdlSubmitMsg(Ctx->Msg, Ctx->recp, NULL, 0);
 196
 197         /* write the uidl to the use table so we don't store this item again */
 198         cdb_store(CDB_USETABLE, SKEY(Ctx->MsgGUID), &Ctx->ut, sizeof(struct UseTable) );
 199
 200         return eTerminateConnection;
 201 }
 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                         {
 336                                 msg->cm_fields['A'] = SmashStrBuf(&ri->author_or_creator);
 337                                 msg->cm_fields['P'] = strdup(msg->cm_fields['A']);
 338                         }
 339                         else
 340                         {
 341                                 StrBufRFC2047encode(&Encoded, ri->author_or_creator);
 342                                 msg->cm_fields['A'] = SmashStrBuf(&Encoded);
 343                                 msg->cm_fields['P'] = strdup("rss@localhost");
 344
 345                         }
 346                         if (ri->pubdate <= 0) {
 347                                 ri->pubdate = time(NULL);
 348                         }
 349                 }
 350         }
 351         else {
 352                 msg->cm_fields['A'] = strdup("rss");
 353         }
 354
 355         msg->cm_fields['N'] = strdup(NODENAME);
 356         if (ri->title != NULL) {
 357                 long len;
 358                 char *Sbj;
 359                 StrBuf *Encoded, *QPEncoded;
 360
 361                 QPEncoded = NULL;
 362                 StrBufSpaceToBlank(ri->title);
 363                 len = StrLength(ri->title);
 364                 Sbj = html_to_ascii(ChrPtr(ri->title), len, 512, 0);
 365                 len = strlen(Sbj);
 366                 if (Sbj[len - 1] == '\n')
 367                 {
 368                         len --;
 369                         Sbj[len] = '\0';
 370                 }
 371                 Encoded = NewStrBufPlain(Sbj, len);
 372                 free(Sbj);
 373
 374                 StrBufTrim(Encoded);
 375                 StrBufRFC2047encode(&QPEncoded, Encoded);
 376
 377                 msg->cm_fields['U'] = SmashStrBuf(&QPEncoded);
 378                 FreeStrBuf(&Encoded);
 379         }
 380         msg->cm_fields['T'] = malloc(64);
 381         snprintf(msg->cm_fields['T'], 64, "%ld", ri->pubdate);
 382         if (ri->channel_title != NULL) {
 383                 if (StrLength(ri->channel_title) > 0) {
 384                         msg->cm_fields['O'] = strdup(ChrPtr(ri->channel_title));
 385                 }
 386         }
 387         if (ri->link == NULL)
 388                 ri->link = NewStrBufPlain(HKEY(""));
 389
 390 #if 0 /* temporarily disable shorter urls. */
 391         msg->cm_fields[TMP_SHORTER_URLS] = GetShorterUrls(ri->description);
 392 #endif
 393
 394         msglen += 1024 + StrLength(ri->link) + StrLength(ri->description) ;
 395
 396         Message = NewStrBufPlain(NULL, StrLength(ri->description));
 397
 398         StrBufPlain(Message, HKEY(
 399                             "Content-type: text/html; charset=\"UTF-8\"\r\n\r\n"
 400                             "<html><body>\n"));
 401 #if 0 /* disable shorter url for now. */
 402         msg->cm_fields[TMP_SHORTER_URL_OFFSET] = StrLength(Message);
 403 #endif
 404         StrBufAppendBuf(Message, ri->description, 0);
 405         StrBufAppendBufPlain(Message, HKEY("<br><br>\n"), 0);
 406
 407         AppendLink(Message, ri->link, ri->linkTitle, NULL);
 408         AppendLink(Message, ri->reLink, ri->reLinkTitle, "Reply to this");
 409         StrBufAppendBufPlain(Message, HKEY("</body></html>\n"), 0);
 410
 411         RSSQueueSaveMessage(msg, recp, guid, Message, Cfg);
 412 }
 413
 414
 415
 416 /*
 417  * Begin a feed parse
 418  */
 419 int rss_do_fetching(rss_aggregator *Cfg)
 420 {
 421         rss_item *ri;
 422
 423         time_t now;
 424         AsyncIO *IO;
 425
 426         now = time(NULL);
 427
 428         if ((Cfg->next_poll != 0) && (now < Cfg->next_poll))
 429                 return 0;
 430         Cfg->RefCount = 1;
 431
 432         ri = (rss_item*) malloc(sizeof(rss_item));
 433         memset(ri, 0, sizeof(rss_item));
 434         Cfg->Item = ri;
 435         IO = &Cfg->IO;
 436         IO->CitContext = CloneContext(CC);
 437         IO->Data = Cfg;
 438
 439
 440         syslog(LOG_DEBUG, "Fetching RSS feed <%s>\n", ChrPtr(Cfg->Url));
 441         ParseURL(&IO->ConnectMe, Cfg->Url, 80);
 442         CurlPrepareURL(IO->ConnectMe);
 443
 444         if (! evcurl_init(IO,
 445 //                        Ctx,
 446                           NULL,
 447                           "Citadel RSS Client",
 448                           ParseRSSReply,
 449                           RSSAggregatorTerminate))
 450         {
 451                 syslog(LOG_DEBUG, "Unable to initialize libcurl.\n");
 452                 return 0;
 453         }
 454
 455         evcurl_handle_start(IO);
 456         return 1;
 457 }
 458
 459
 460 void DeleteRssCfg(void *vptr)
 461 {
 462         rss_aggregator *rncptr = (rss_aggregator *)vptr;
 463
 464         FreeStrBuf(&rncptr->Url);
 465         FreeStrBuf(&rncptr->rooms);
 466         FreeStrBuf(&rncptr->CData);
 467         FreeStrBuf(&rncptr->Key);
 468
 469         DeleteHash(&rncptr->OtherQRnumbers);
 470
 471         if (rncptr->Item != NULL)
 472         {
 473                 FreeStrBuf(&rncptr->Item->guid);
 474                 FreeStrBuf(&rncptr->Item->title);
 475                 FreeStrBuf(&rncptr->Item->link);
 476                 FreeStrBuf(&rncptr->Item->linkTitle);
 477                 FreeStrBuf(&rncptr->Item->reLink);
 478                 FreeStrBuf(&rncptr->Item->reLinkTitle);
 479                 FreeStrBuf(&rncptr->Item->description);
 480                 FreeStrBuf(&rncptr->Item->channel_title);
 481                 FreeStrBuf(&rncptr->Item->author_or_creator);
 482                 FreeStrBuf(&rncptr->Item->author_url);
 483                 FreeStrBuf(&rncptr->Item->author_email);
 484
 485                 free(rncptr->Item);
 486         }
 487         free(rncptr);
 488 }
 489
 490 eNextState RSSAggregatorTerminate(AsyncIO *IO)
 491 {
 492         rss_aggregator *rncptr = (rss_aggregator *)IO->Data;
 493         /*
 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=NULL;
 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         if (fstat(fd, &statbuf) == -1) {
 568                 syslog(LOG_DEBUG, "ERROR: could not stat configfile '%s' - %s\n",
 569                        filename, strerror(errno));
 570                 return;
 571         }
 572
 573         if (server_shutting_down)
 574                 return;
 575
 576         CfgData = NewStrBufPlain(NULL, statbuf.st_size + 1);
 577
 578         if (StrBufReadBLOB(CfgData, &fd, 1, statbuf.st_size, &Err) < 0) {
 579                 close(fd);
 580                 FreeStrBuf(&CfgData);
 581                 syslog(LOG_DEBUG, "ERROR: reading config '%s' - %s<br>\n",
 582                         filename, strerror(errno));
 583                 return;
 584         }
 585         close(fd);
 586         if (server_shutting_down)
 587                 return;
 588
 589         CfgPtr = NULL;
 590         CfgType = NewStrBuf();
 591         Line = NewStrBufPlain(NULL, StrLength(CfgData));
 592         Done = 0;
 593         while (!Done)
 594         {
 595             Done = StrBufSipLine(Line, CfgData, &CfgPtr) == 0;
 596             if (StrLength(Line) > 0)
 597             {
 598                 lPtr = NULL;
 599                 StrBufExtract_NextToken(CfgType, Line, &lPtr, '|');
 600                 if (!strcasecmp("rssclient", ChrPtr(CfgType)))
 601                 {
 602                     if (Count == NULL)
 603                     {
 604                         Count = malloc(sizeof(rss_room_counter));
 605                         Count->count = 0;
 606                     }
 607                     Count->count ++;
 608                     rncptr = (rss_aggregator *) malloc(sizeof(rss_aggregator));
 609                     memset (rncptr, 0, sizeof(rss_aggregator));
 610                     rncptr->roomlist_parts = 1;
 611                     rncptr->Url = NewStrBuf();
 612                     StrBufExtract_NextToken(rncptr->Url, Line, &lPtr, '|');
 613
 614                     pthread_mutex_lock(&RSSQueueMutex);
 615                     GetHash(RSSFetchUrls, SKEY(rncptr->Url), &vptr);
 616                     use_this_rncptr = (rss_aggregator *)vptr;
 617                     if (use_this_rncptr != NULL)
 618                     {
 619                             /* mustn't attach to an active session */
 620                             if (use_this_rncptr->RefCount > 0)
 621                             {
 622                                     DeleteRssCfg(rncptr);
 623                                     Count->count--;
 624                             }
 625                             else
 626                             {
 627                                     long *QRnumber;
 628                                     StrBufAppendBufPlain(use_this_rncptr->rooms,
 629                                                          qrbuf->QRname,
 630                                                          -1, 0);
 631                                     if (use_this_rncptr->roomlist_parts == 1)
 632                                     {
 633                                             use_this_rncptr->OtherQRnumbers = NewHash(1, lFlathash);
 634                                     }
 635                                     QRnumber = (long*)malloc(sizeof(long));
 636                                     *QRnumber = qrbuf->QRnumber;
 637                                     Put(use_this_rncptr->OtherQRnumbers, LKEY(qrbuf->QRnumber), QRnumber, NULL);
 638                                     use_this_rncptr->roomlist_parts++;
 639                             }
 640                             pthread_mutex_unlock(&RSSQueueMutex);
 641                             continue;
 642                     }
 643                     pthread_mutex_unlock(&RSSQueueMutex);
 644
 645                     rncptr->ItemType = RSS_UNSET;
 646
 647                     rncptr->rooms = NewStrBufPlain(qrbuf->QRname, -1);
 648
 649                     pthread_mutex_lock(&RSSQueueMutex);
 650                     Put(RSSFetchUrls, SKEY(rncptr->Url), rncptr, DeleteRssCfg);
 651                     pthread_mutex_unlock(&RSSQueueMutex);
 652                 }
 653             }
 654         }
 655         if (Count != NULL)
 656         {
 657                 Count->QRnumber = qrbuf->QRnumber;
 658                 pthread_mutex_lock(&RSSQueueMutex);
 659                 syslog(LOG_DEBUG, "rssclient: [%ld] %s now starting.\n",
 660                               qrbuf->QRnumber, qrbuf->QRname);
 661                 Put(RSSQueueRooms, LKEY(qrbuf->QRnumber), Count, NULL);
 662                 pthread_mutex_unlock(&RSSQueueMutex);
 663         }
 664         FreeStrBuf(&CfgData);
 665         FreeStrBuf(&CfgType);
 666         FreeStrBuf(&Line);
 667 }
 668
 669 /*
 670  * Scan for rooms that have RSS client requests configured
 671  */
 672 void rssclient_scan(void) {
 673         static int doing_rssclient = 0;
 674         rss_aggregator *rptr = NULL;
 675         void *vrptr = NULL;
 676         HashPos  *it;
 677         long len;
 678         const char *Key;
 679
 680         /* Run no more than once every 15 minutes. * /
 681         if ((time(NULL) - last_run) < 900) {
 682                 return;
 683         }
 684 */
 685         /*
 686          * This is a simple concurrency check to make sure only one rssclient run
 687          * is done at a time.  We could do this with a mutex, but since we
 688          * don't really require extremely fine granularity here, we'll do it
 689          * with a static variable instead.
 690          */
 691         if (doing_rssclient) return;
 692         doing_rssclient = 1;
 693
 694         syslog(LOG_DEBUG, "rssclient started\n");
 695         CtdlForEachRoom(rssclient_scan_room, NULL);
 696
 697         pthread_mutex_lock(&RSSQueueMutex);
 698
 699         it = GetNewHashPos(RSSFetchUrls, 0);
 700         while (!server_shutting_down &&
 701                GetNextHashPos(RSSFetchUrls, it, &len, &Key, &vrptr) &&
 702                (vrptr != NULL)) {
 703                 rptr = (rss_aggregator *)vrptr;
 704                 if (rptr->RefCount == 0)
 705                         if (!rss_do_fetching(rptr))
 706                                 UnlinkRSSAggregator(rptr);
 707         }
 708         DeleteHashPos(&it);
 709         pthread_mutex_unlock(&RSSQueueMutex);
 710
 711         syslog(LOG_DEBUG, "rssclient ended\n");
 712         doing_rssclient = 0;
 713         return;
 714 }
 715
 716 void rss_cleanup(void)
 717 {
 718         /* citthread_mutex_destroy(&RSSQueueMutex); TODO */
 719         DeleteHash(&RSSFetchUrls);
 720         DeleteHash(&RSSQueueRooms);
 721 }
 722
 723
 724 CTDL_MODULE_INIT(rssclient)
 725 {
 726         if (threading)
 727         {
 728                 pthread_mutex_init(&RSSQueueMutex, NULL);
 729                 RSSQueueRooms = NewHash(1, lFlathash);
 730                 RSSFetchUrls = NewHash(1, NULL);
 731                 syslog(LOG_INFO, "%s\n", curl_version());
 732                 CtdlRegisterSessionHook(rssclient_scan, EVT_TIMER);
 733                 CtdlRegisterCleanupHook(rss_cleanup);
 734         }
 735         return "rssclient";
 736 }