citadel/modules/rssclient/serv_rssclient.c

   1 /*
   2  * Bring external RSS feeds into rooms.
   3  *
   4  * Copyright (c) 2007-2012 by the citadel.org team
   5  *
   6  * This program is open source software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 3.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.See the
  12  * GNU General Public License for more details.
  13  */
  14
  15 #include <stdlib.h>
  16 #include <unistd.h>
  17 #include <stdio.h>
  18
  19 #if TIME_WITH_SYS_TIME
  20 # include <sys/time.h>
  21 # include <time.h>
  22 #else
  23 # if HAVE_SYS_TIME_H
  24 #include <sys/time.h>
  25 # else
  26 #include <time.h>
  27 # endif
  28 #endif
  29
  30 #include <ctype.h>
  31 #include <string.h>
  32 #include <errno.h>
  33 #include <sys/types.h>
  34 #include <sys/stat.h>
  35 #include <expat.h>
  36 #include <curl/curl.h>
  37 #include <libcitadel.h>
  38 #include "citadel.h"
  39 #include "server.h"
  40 #include "citserver.h"
  41 #include "support.h"
  42 #include "config.h"
  43 #include "threads.h"
  44 #include "ctdl_module.h"
  45 #include "msgbase.h"
  46 #include "parsedate.h"
  47 #include "database.h"
  48 #include "citadel_dirs.h"
  49 #include "md5.h"
  50 #include "context.h"
  51 #include "event_client.h"
  52 #include "rss_atom_parser.h"
  53
  54
  55 #define TMP_MSGDATA 0xFF
  56 #define TMP_SHORTER_URL_OFFSET 0xFE
  57 #define TMP_SHORTER_URLS 0xFD
  58
  59 time_t last_run = 0L;
  60
  61 pthread_mutex_t RSSQueueMutex; /* locks the access to the following vars: */
  62 HashList *RSSQueueRooms = NULL; /* rss_room_counter */
  63 HashList *RSSFetchUrls = NULL; /*->rss_aggregator;->RefCount access locked*/
  64
  65 eNextState RSSAggregator_Terminate(AsyncIO *IO);
  66 eNextState RSSAggregator_TerminateDB(AsyncIO *IO);
  67 eNextState RSSAggregator_ShutdownAbort(AsyncIO *IO);
  68 struct CitContext rss_CC;
  69
  70 struct rssnetcfg *rnclist = NULL;
  71 int RSSClientDebugEnabled = 0;
  72 #define N ((rss_aggregator*)IO->Data)->QRnumber
  73
  74 #define DBGLOG(LEVEL) if ((LEVEL != LOG_DEBUG) || (RSSClientDebugEnabled != 0))
  75
  76 #define EVRSSC_syslog(LEVEL, FORMAT, ...)                               \
  77         DBGLOG(LEVEL) syslog(LEVEL,                                     \
  78                              "IO[%ld]CC[%d][%ld]RSS" FORMAT,            \
  79                              IO->ID, CCID, N, __VA_ARGS__)
  80
  81 #define EVRSSCM_syslog(LEVEL, FORMAT)                                   \
  82         DBGLOG(LEVEL) syslog(LEVEL,                                     \
  83                              "IO[%ld]CC[%d][%ld]RSS" FORMAT,            \
  84                              IO->ID, CCID, N)
  85
  86 #define EVRSSQ_syslog(LEVEL, FORMAT, ...)                               \
  87         DBGLOG(LEVEL) syslog(LEVEL, "RSS" FORMAT,                       \
  88                              __VA_ARGS__)
  89 #define EVRSSQM_syslog(LEVEL, FORMAT)                   \
  90         DBGLOG(LEVEL) syslog(LEVEL, "RSS" FORMAT)
  91
  92 #define EVRSSCSM_syslog(LEVEL, FORMAT)                                  \
  93         DBGLOG(LEVEL) syslog(LEVEL, "IO[%ld][%ld]RSS" FORMAT,           \
  94                              IO->ID, N)
  95
  96 void DeleteRoomReference(long QRnumber)
  97 {
  98         HashPos *At;
  99         long HKLen;
 100         const char *HK;
 101         void *vData = NULL;
 102         rss_room_counter *pRoomC;
 103
 104         At = GetNewHashPos(RSSQueueRooms, 0);
 105
 106         if (GetHashPosFromKey(RSSQueueRooms, LKEY(QRnumber), At))
 107         {
 108                 GetHashPos(RSSQueueRooms, At, &HKLen, &HK, &vData);
 109                 if (vData != NULL)
 110                 {
 111                         pRoomC = (rss_room_counter *) vData;
 112                         pRoomC->count --;
 113                         if (pRoomC->count == 0)
 114                                 DeleteEntryFromHash(RSSQueueRooms, At);
 115                 }
 116         }
 117         DeleteHashPos(&At);
 118 }
 119
 120 void UnlinkRooms(rss_aggregator *RSSAggr)
 121 {
 122         DeleteRoomReference(RSSAggr->QRnumber);
 123         if (RSSAggr->OtherQRnumbers != NULL)
 124         {
 125                 long HKLen;
 126                 const char *HK;
 127                 HashPos *At;
 128                 void *vData;
 129
 130                 At = GetNewHashPos(RSSAggr->OtherQRnumbers, 0);
 131                 while (! server_shutting_down &&
 132                        GetNextHashPos(RSSAggr->OtherQRnumbers,
 133                                       At,
 134                                       &HKLen, &HK,
 135                                       &vData) &&
 136                        (vData != NULL))
 137                 {
 138                         long *lData = (long*) vData;
 139                         DeleteRoomReference(*lData);
 140                 }
 141
 142                 DeleteHashPos(&At);
 143         }
 144 }
 145
 146 void UnlinkRSSAggregator(rss_aggregator *RSSAggr)
 147 {
 148         HashPos *At;
 149
 150         pthread_mutex_lock(&RSSQueueMutex);
 151         UnlinkRooms(RSSAggr);
 152
 153         At = GetNewHashPos(RSSFetchUrls, 0);
 154         if (GetHashPosFromKey(RSSFetchUrls, SKEY(RSSAggr->Url), At))
 155         {
 156                 DeleteEntryFromHash(RSSFetchUrls, At);
 157         }
 158         DeleteHashPos(&At);
 159         last_run = time(NULL);
 160         pthread_mutex_unlock(&RSSQueueMutex);
 161 }
 162
 163 void DeleteRssCfg(void *vptr)
 164 {
 165         rss_aggregator *RSSAggr = (rss_aggregator *)vptr;
 166         AsyncIO *IO = &RSSAggr->IO;
 167         EVRSSCM_syslog(LOG_DEBUG, "RSS: destroying\n");
 168
 169         FreeStrBuf(&RSSAggr->Url);
 170         FreeStrBuf(&RSSAggr->rooms);
 171         FreeStrBuf(&RSSAggr->CData);
 172         FreeStrBuf(&RSSAggr->Key);
 173         DeleteHash(&RSSAggr->OtherQRnumbers);
 174
 175         DeleteHashPos (&RSSAggr->Pos);
 176         DeleteHash (&RSSAggr->Messages);
 177         if (RSSAggr->recp.recp_room != NULL)
 178                 free(RSSAggr->recp.recp_room);
 179
 180
 181         if (RSSAggr->Item != NULL)
 182         {
 183                 flush_rss_item(RSSAggr->Item);
 184
 185                 free(RSSAggr->Item);
 186         }
 187
 188         FreeAsyncIOContents(&RSSAggr->IO);
 189         memset(RSSAggr, 0, sizeof(rss_aggregator));
 190         free(RSSAggr);
 191 }
 192
 193 eNextState RSSAggregator_Terminate(AsyncIO *IO)
 194 {
 195         rss_aggregator *RSSAggr = (rss_aggregator *)IO->Data;
 196
 197         EVRSSCM_syslog(LOG_DEBUG, "RSS: Terminating.\n");
 198
 199         StopCurlWatchers(IO);
 200         UnlinkRSSAggregator(RSSAggr);
 201         return eAbort;
 202 }
 203
 204 eNextState RSSAggregator_TerminateDB(AsyncIO *IO)
 205 {
 206         rss_aggregator *RSSAggr = (rss_aggregator *)IO->Data;
 207
 208         EVRSSCM_syslog(LOG_DEBUG, "RSS: Terminating.\n");
 209
 210
 211         StopDBWatchers(&RSSAggr->IO);
 212         UnlinkRSSAggregator(RSSAggr);
 213         return eAbort;
 214 }
 215
 216 eNextState RSSAggregator_ShutdownAbort(AsyncIO *IO)
 217 {
 218         const char *pUrl;
 219         rss_aggregator *RSSAggr = (rss_aggregator *)IO->Data;
 220
 221         pUrl = IO->ConnectMe->PlainUrl;
 222         if (pUrl == NULL)
 223                 pUrl = "";
 224
 225         EVRSSC_syslog(LOG_DEBUG, "RSS: Aborting by shutdown: %s.\n", pUrl);
 226
 227         StopCurlWatchers(IO);
 228         UnlinkRSSAggregator(RSSAggr);
 229         return eAbort;
 230 }
 231
 232 void AppendLink(StrBuf *Message,
 233                 StrBuf *link,
 234                 StrBuf *LinkTitle,
 235                 const char *Title)
 236 {
 237         if (StrLength(link) > 0)
 238         {
 239                 StrBufAppendBufPlain(Message, HKEY("<a href=\""), 0);
 240                 StrBufAppendBuf(Message, link, 0);
 241                 StrBufAppendBufPlain(Message, HKEY("\">"), 0);
 242                 if (StrLength(LinkTitle) > 0)
 243                         StrBufAppendBuf(Message, LinkTitle, 0);
 244                 else if ((Title != NULL) && !IsEmptyStr(Title))
 245                         StrBufAppendBufPlain(Message, Title, -1, 0);
 246                 else
 247                         StrBufAppendBuf(Message, link, 0);
 248                 StrBufAppendBufPlain(Message, HKEY("</a><br>\n"), 0);
 249         }
 250 }
 251
 252
 253 void rss_format_item(networker_save_message *SaveMsg)
 254 {
 255         StrBuf *Message;
 256         int msglen = 0;
 257
 258         if (SaveMsg->author_or_creator != NULL) {
 259
 260                 char *From;
 261                 StrBuf *Encoded = NULL;
 262                 int FromAt;
 263
 264                 From = html_to_ascii(ChrPtr(SaveMsg->author_or_creator),
 265                                      StrLength(SaveMsg->author_or_creator),
 266                                      512, 0);
 267                 StrBufPlain(SaveMsg->author_or_creator, From, -1);
 268                 StrBufTrim(SaveMsg->author_or_creator);
 269                 free(From);
 270
 271                 FromAt = strchr(ChrPtr(SaveMsg->author_or_creator), '@') != NULL;
 272                 if (!FromAt && StrLength (SaveMsg->author_email) > 0)
 273                 {
 274                         StrBufRFC2047encode(&Encoded, SaveMsg->author_or_creator);
 275                         SaveMsg->Msg.cm_fields['A'] = SmashStrBuf(&Encoded);
 276                         SaveMsg->Msg.cm_fields['P'] =
 277                                 SmashStrBuf(&SaveMsg->author_email);
 278                 }
 279                 else
 280                 {
 281                         if (FromAt)
 282                         {
 283                                 SaveMsg->Msg.cm_fields['A'] =
 284                                         SmashStrBuf(&SaveMsg->author_or_creator);
 285                                 SaveMsg->Msg.cm_fields['P'] =
 286                                         strdup(SaveMsg->Msg.cm_fields['A']);
 287                         }
 288                         else
 289                         {
 290                                 StrBufRFC2047encode(&Encoded,
 291                                                     SaveMsg->author_or_creator);
 292                                 SaveMsg->Msg.cm_fields['A'] =
 293                                         SmashStrBuf(&Encoded);
 294                                 SaveMsg->Msg.cm_fields['P'] =
 295                                         strdup("rss@localhost");
 296
 297                         }
 298                 }
 299         }
 300         else {
 301                 SaveMsg->Msg.cm_fields['A'] = strdup("rss");
 302         }
 303
 304         SaveMsg->Msg.cm_fields['N'] = strdup(NODENAME);
 305         if (SaveMsg->title != NULL) {
 306                 long len;
 307                 char *Sbj;
 308                 StrBuf *Encoded, *QPEncoded;
 309
 310                 QPEncoded = NULL;
 311                 StrBufSpaceToBlank(SaveMsg->title);
 312                 len = StrLength(SaveMsg->title);
 313                 Sbj = html_to_ascii(ChrPtr(SaveMsg->title), len, 512, 0);
 314                 len = strlen(Sbj);
 315                 if ((len > 0) && (Sbj[len - 1] == '\n'))
 316                 {
 317                         len --;
 318                         Sbj[len] = '\0';
 319                 }
 320                 Encoded = NewStrBufPlain(Sbj, len);
 321                 free(Sbj);
 322
 323                 StrBufTrim(Encoded);
 324                 StrBufRFC2047encode(&QPEncoded, Encoded);
 325
 326                 SaveMsg->Msg.cm_fields['U'] = SmashStrBuf(&QPEncoded);
 327                 FreeStrBuf(&Encoded);
 328         }
 329         if (SaveMsg->link == NULL)
 330                 SaveMsg->link = NewStrBufPlain(HKEY(""));
 331
 332 #if 0 /* temporarily disable shorter urls. */
 333         SaveMsg->Msg.cm_fields[TMP_SHORTER_URLS] =
 334                 GetShorterUrls(SaveMsg->description);
 335 #endif
 336
 337         msglen += 1024 + StrLength(SaveMsg->link) + StrLength(SaveMsg->description) ;
 338
 339         Message = NewStrBufPlain(NULL, msglen);
 340
 341         StrBufPlain(Message, HKEY(
 342                             "Content-type: text/html; charset=\"UTF-8\"\r\n\r\n"
 343                             "<html><body>\n"));
 344 #if 0 /* disable shorter url for now. */
 345         SaveMsg->Msg.cm_fields[TMP_SHORTER_URL_OFFSET] = StrLength(Message);
 346 #endif
 347         StrBufAppendBuf(Message, SaveMsg->description, 0);
 348         StrBufAppendBufPlain(Message, HKEY("<br><br>\n"), 0);
 349
 350         AppendLink(Message, SaveMsg->link, SaveMsg->linkTitle, NULL);
 351         AppendLink(Message, SaveMsg->reLink, SaveMsg->reLinkTitle, "Reply to this");
 352         StrBufAppendBufPlain(Message, HKEY("</body></html>\n"), 0);
 353
 354
 355         SaveMsg->Message = Message;
 356 }
 357
 358 eNextState RSSSaveMessage(AsyncIO *IO)
 359 {
 360         long len;
 361         const char *Key;
 362         rss_aggregator *RSSAggr = (rss_aggregator *) IO->Data;
 363
 364         rss_format_item(RSSAggr->ThisMsg);
 365
 366         RSSAggr->ThisMsg->Msg.cm_fields['M'] =
 367                 SmashStrBuf(&RSSAggr->ThisMsg->Message);
 368
 369         CtdlSubmitMsg(&RSSAggr->ThisMsg->Msg, &RSSAggr->recp, NULL, 0);
 370
 371         /* write the uidl to the use table so we don't store this item again */
 372         cdb_store(CDB_USETABLE,
 373                   SKEY(RSSAggr->ThisMsg->MsgGUID),
 374                   &RSSAggr->ThisMsg->ut,
 375                   sizeof(struct UseTable) );
 376
 377         if (GetNextHashPos(RSSAggr->Messages,
 378                            RSSAggr->Pos,
 379                            &len, &Key,
 380                            (void**) &RSSAggr->ThisMsg))
 381                 return NextDBOperation(IO, RSS_FetchNetworkUsetableEntry);
 382         else
 383                 return eAbort;
 384 }
 385
 386 eNextState RSS_FetchNetworkUsetableEntry(AsyncIO *IO)
 387 {
 388         const char *Key;
 389         long len;
 390         struct cdbdata *cdbut;
 391         rss_aggregator *Ctx = (rss_aggregator *) IO->Data;
 392
 393         /* Find out if we've already seen this item */
 394         strcpy(Ctx->ThisMsg->ut.ut_msgid,
 395                ChrPtr(Ctx->ThisMsg->MsgGUID)); /// TODO
 396         Ctx->ThisMsg->ut.ut_timestamp = time(NULL);
 397
 398         cdbut = cdb_fetch(CDB_USETABLE, SKEY(Ctx->ThisMsg->MsgGUID));
 399 #ifndef DEBUG_RSS
 400         if (cdbut != NULL) {
 401                 /* Item has already been seen */
 402                 EVRSSC_syslog(LOG_DEBUG,
 403                           "%s has already been seen\n",
 404                           ChrPtr(Ctx->ThisMsg->MsgGUID));
 405                 cdb_free(cdbut);
 406
 407                 /* rewrite the record anyway, to update the timestamp */
 408                 cdb_store(CDB_USETABLE,
 409                           SKEY(Ctx->ThisMsg->MsgGUID),
 410                           &Ctx->ThisMsg->ut, sizeof(struct UseTable) );
 411
 412                 if (GetNextHashPos(Ctx->Messages,
 413                                    Ctx->Pos,
 414                                    &len, &Key,
 415                                    (void**) &Ctx->ThisMsg))
 416                         return NextDBOperation(
 417                                 IO,
 418                                 RSS_FetchNetworkUsetableEntry);
 419                 else
 420                         return eAbort;
 421         }
 422         else
 423 #endif
 424         {
 425                 NextDBOperation(IO, RSSSaveMessage);
 426                 return eSendMore;
 427         }
 428 }
 429
 430 eNextState RSSAggregator_AnalyseReply(AsyncIO *IO)
 431 {
 432         struct UseTable ut;
 433         u_char rawdigest[MD5_DIGEST_LEN];
 434         struct MD5Context md5context;
 435         StrBuf *guid;
 436         struct cdbdata *cdbut;
 437         rss_aggregator *Ctx = (rss_aggregator *) IO->Data;
 438
 439         if (IO->HttpReq.httpcode != 200)
 440         {
 441                 StrBuf *ErrMsg;
 442                 long lens[2];
 443                 const char *strs[2];
 444
 445                 ErrMsg = NewStrBuf();
 446                 EVRSSC_syslog(LOG_ALERT, "need a 200, got a %ld !\n",
 447                               IO->HttpReq.httpcode);
 448
 449                 strs[0] = ChrPtr(Ctx->Url);
 450                 lens[0] = StrLength(Ctx->Url);
 451
 452                 strs[1] = ChrPtr(Ctx->rooms);
 453                 lens[1] = StrLength(Ctx->rooms);
 454                 StrBufPrintf(ErrMsg,
 455                              "Error while RSS-Aggregation Run of %s\n"
 456                              " need a 200, got a %ld !\n"
 457                              " Response text was: \n"
 458                              " \n %s\n",
 459                              ChrPtr(Ctx->Url),
 460                              IO->HttpReq.httpcode,
 461                              ChrPtr(IO->HttpReq.ReplyData));
 462                 CtdlAideFPMessage(
 463                         ChrPtr(ErrMsg),
 464                         "RSS Aggregation run failure",
 465                         2, strs, (long*) &lens);
 466                 FreeStrBuf(&ErrMsg);
 467                 return eAbort;
 468         }
 469
 470         MD5Init(&md5context);
 471
 472         MD5Update(&md5context,
 473                   (const unsigned char*)SKEY(IO->HttpReq.ReplyData));
 474
 475         MD5Update(&md5context,
 476                   (const unsigned char*)SKEY(Ctx->Url));
 477
 478         MD5Final(rawdigest, &md5context);
 479         guid = NewStrBufPlain(NULL,
 480                               MD5_DIGEST_LEN * 2 + 12 /* _rss2ctdl*/);
 481         StrBufHexEscAppend(guid, NULL, rawdigest, MD5_DIGEST_LEN);
 482         StrBufAppendBufPlain(guid, HKEY("_rssFM"), 0);
 483         if (StrLength(guid) > 40)
 484                 StrBufCutAt(guid, 40, NULL);
 485         /* Find out if we've already seen this item */
 486         memcpy(ut.ut_msgid, SKEY(guid));
 487         ut.ut_timestamp = time(NULL);
 488
 489         cdbut = cdb_fetch(CDB_USETABLE, SKEY(guid));
 490 #ifndef DEBUG_RSS
 491         if (cdbut != NULL) {
 492                 /* Item has already been seen */
 493                 EVRSSC_syslog(LOG_DEBUG,
 494                               "%s has already been seen\n",
 495                               ChrPtr(Ctx->Url));
 496                 cdb_free(cdbut);
 497         }
 498
 499         /* rewrite the record anyway, to update the timestamp */
 500         cdb_store(CDB_USETABLE,
 501                   SKEY(guid),
 502                   &ut, sizeof(struct UseTable) );
 503         FreeStrBuf(&guid);
 504         if (cdbut != NULL) return eAbort;
 505 #endif
 506         return RSSAggregator_ParseReply(IO);
 507 }
 508
 509 eNextState RSSAggregator_FinishHttp(AsyncIO *IO)
 510 {
 511         return QueueDBOperation(IO, RSSAggregator_AnalyseReply);
 512 }
 513
 514 /*
 515  * Begin a feed parse
 516  */
 517 int rss_do_fetching(rss_aggregator *RSSAggr)
 518 {
 519         AsyncIO         *IO = &RSSAggr->IO;
 520         rss_item *ri;
 521         time_t now;
 522
 523         now = time(NULL);
 524
 525         if ((RSSAggr->next_poll != 0) && (now < RSSAggr->next_poll))
 526                 return 0;
 527
 528         ri = (rss_item*) malloc(sizeof(rss_item));
 529         memset(ri, 0, sizeof(rss_item));
 530         RSSAggr->Item = ri;
 531
 532         if (! InitcURLIOStruct(&RSSAggr->IO,
 533                                RSSAggr,
 534                                "Citadel RSS Client",
 535                                RSSAggregator_FinishHttp,
 536                                RSSAggregator_Terminate,
 537                                RSSAggregator_TerminateDB,
 538                                RSSAggregator_ShutdownAbort))
 539         {
 540                 EVRSSCM_syslog(LOG_ALERT, "Unable to initialize libcurl.\n");
 541                 return 0;
 542         }
 543
 544         safestrncpy(((CitContext*)RSSAggr->IO.CitContext)->cs_host,
 545                     ChrPtr(RSSAggr->Url),
 546                     sizeof(((CitContext*)RSSAggr->IO.CitContext)->cs_host));
 547
 548         EVRSSC_syslog(LOG_DEBUG, "Fetching RSS feed <%s>\n", ChrPtr(RSSAggr->Url));
 549         ParseURL(&RSSAggr->IO.ConnectMe, RSSAggr->Url, 80);
 550         CurlPrepareURL(RSSAggr->IO.ConnectMe);
 551
 552         QueueCurlContext(&RSSAggr->IO);
 553         return 1;
 554 }
 555
 556 /*
 557  * Scan a room's netconfig to determine whether it is requesting any RSS feeds
 558  */
 559 void rssclient_scan_room(struct ctdlroom *qrbuf, void *data)
 560 {
 561         StrBuf *CfgData=NULL;
 562         StrBuf *CfgType;
 563         StrBuf *Line;
 564         rss_room_counter *Count = NULL;
 565         struct stat statbuf;
 566         char filename[PATH_MAX];
 567         int fd;
 568         int Done;
 569         rss_aggregator *RSSAggr = NULL;
 570         rss_aggregator *use_this_RSSAggr = NULL;
 571         void *vptr;
 572         const char *CfgPtr, *lPtr;
 573         const char *Err;
 574
 575         pthread_mutex_lock(&RSSQueueMutex);
 576         if (GetHash(RSSQueueRooms, LKEY(qrbuf->QRnumber), &vptr))
 577         {
 578                 EVRSSQ_syslog(LOG_DEBUG,
 579                               "rssclient: [%ld] %s already in progress.\n",
 580                               qrbuf->QRnumber,
 581                               qrbuf->QRname);
 582                 pthread_mutex_unlock(&RSSQueueMutex);
 583                 return;
 584         }
 585         pthread_mutex_unlock(&RSSQueueMutex);
 586
 587         assoc_file_name(filename, sizeof filename, qrbuf, ctdl_netcfg_dir);
 588
 589         if (server_shutting_down)
 590                 return;
 591
 592         /* Only do net processing for rooms that have netconfigs */
 593         fd = open(filename, 0);
 594         if (fd <= 0) {
 595                 /* syslog(LOG_DEBUG,
 596                    "rssclient: %s no config.\n",
 597                    qrbuf->QRname); */
 598                 return;
 599         }
 600
 601         if (server_shutting_down)
 602                 return;
 603
 604         if (fstat(fd, &statbuf) == -1) {
 605                 EVRSSQ_syslog(LOG_DEBUG,
 606                               "ERROR: could not stat configfile '%s' - %s\n",
 607                               filename,
 608                               strerror(errno));
 609                 return;
 610         }
 611
 612         if (server_shutting_down)
 613                 return;
 614
 615         CfgData = NewStrBufPlain(NULL, statbuf.st_size + 1);
 616
 617         if (StrBufReadBLOB(CfgData, &fd, 1, statbuf.st_size, &Err) < 0) {
 618                 close(fd);
 619                 FreeStrBuf(&CfgData);
 620                 EVRSSQ_syslog(LOG_ERR, "ERROR: reading config '%s' - %s<br>\n",
 621                               filename, strerror(errno));
 622                 return;
 623         }
 624         close(fd);
 625         if (server_shutting_down)
 626                 return;
 627
 628         CfgPtr = NULL;
 629         CfgType = NewStrBuf();
 630         Line = NewStrBufPlain(NULL, StrLength(CfgData));
 631         Done = 0;
 632         while (!Done)
 633         {
 634                 Done = StrBufSipLine(Line, CfgData, &CfgPtr) == 0;
 635                 if (StrLength(Line) > 0)
 636                 {
 637                         lPtr = NULL;
 638                         StrBufExtract_NextToken(CfgType, Line, &lPtr, '|');
 639                         if (!strcasecmp("rssclient", ChrPtr(CfgType)))
 640                         {
 641                                 if (Count == NULL)
 642                                 {
 643                                         Count = malloc(
 644                                                 sizeof(rss_room_counter));
 645                                         Count->count = 0;
 646                                 }
 647                                 Count->count ++;
 648                                 RSSAggr = (rss_aggregator *) malloc(
 649                                         sizeof(rss_aggregator));
 650
 651                                 memset (RSSAggr, 0, sizeof(rss_aggregator));
 652                                 RSSAggr->QRnumber = qrbuf->QRnumber;
 653                                 RSSAggr->roomlist_parts = 1;
 654                                 RSSAggr->Url = NewStrBuf();
 655
 656                                 StrBufExtract_NextToken(RSSAggr->Url,
 657                                                         Line,
 658                                                         &lPtr,
 659                                                         '|');
 660
 661                                 pthread_mutex_lock(&RSSQueueMutex);
 662                                 GetHash(RSSFetchUrls,
 663                                         SKEY(RSSAggr->Url),
 664                                         &vptr);
 665
 666                                 use_this_RSSAggr = (rss_aggregator *)vptr;
 667                                 if (use_this_RSSAggr != NULL)
 668                                 {
 669                                         long *QRnumber;
 670                                         StrBufAppendBufPlain(
 671                                                 use_this_RSSAggr->rooms,
 672                                                 qrbuf->QRname,
 673                                                 -1, 0);
 674                                         if (use_this_RSSAggr->roomlist_parts==1)
 675                                         {
 676                                                 use_this_RSSAggr->OtherQRnumbers
 677                                                         = NewHash(1, lFlathash);
 678                                         }
 679                                         QRnumber = (long*)malloc(sizeof(long));
 680                                         *QRnumber = qrbuf->QRnumber;
 681                                         Put(use_this_RSSAggr->OtherQRnumbers,
 682                                             LKEY(qrbuf->QRnumber),
 683                                             QRnumber,
 684                                             NULL);
 685                                         use_this_RSSAggr->roomlist_parts++;
 686
 687                                         pthread_mutex_unlock(&RSSQueueMutex);
 688
 689                                         FreeStrBuf(&RSSAggr->Url);
 690                                         free(RSSAggr);
 691                                         RSSAggr = NULL;
 692                                         continue;
 693                                 }
 694                                 pthread_mutex_unlock(&RSSQueueMutex);
 695
 696                                 RSSAggr->ItemType = RSS_UNSET;
 697
 698                                 RSSAggr->rooms = NewStrBufPlain(
 699                                         qrbuf->QRname, -1);
 700
 701                                 pthread_mutex_lock(&RSSQueueMutex);
 702
 703                                 Put(RSSFetchUrls,
 704                                     SKEY(RSSAggr->Url),
 705                                     RSSAggr,
 706                                     DeleteRssCfg);
 707
 708                                 pthread_mutex_unlock(&RSSQueueMutex);
 709                         }
 710                 }
 711         }
 712         if (Count != NULL)
 713         {
 714                 Count->QRnumber = qrbuf->QRnumber;
 715                 pthread_mutex_lock(&RSSQueueMutex);
 716                 EVRSSQ_syslog(LOG_DEBUG, "client: [%ld] %s now starting.\n",
 717                               qrbuf->QRnumber, qrbuf->QRname);
 718                 Put(RSSQueueRooms, LKEY(qrbuf->QRnumber), Count, NULL);
 719                 pthread_mutex_unlock(&RSSQueueMutex);
 720         }
 721         FreeStrBuf(&CfgData);
 722         FreeStrBuf(&CfgType);
 723         FreeStrBuf(&Line);
 724 }
 725
 726 /*
 727  * Scan for rooms that have RSS client requests configured
 728  */
 729 void rssclient_scan(void) {
 730         int RSSRoomCount, RSSCount;
 731         rss_aggregator *rptr = NULL;
 732         void *vrptr = NULL;
 733         HashPos *it;
 734         long len;
 735         const char *Key;
 736         time_t now = time(NULL);
 737
 738         /* Run no more than once every 15 minutes. */
 739         if ((now - last_run) < 900) {
 740                 EVRSSQ_syslog(LOG_DEBUG,
 741                               "Client: polling interval not yet reached; last run was %ldm%lds ago",
 742                               ((now - last_run) / 60),
 743                               ((now - last_run) % 60)
 744                 );
 745                 return;
 746         }
 747
 748         /*
 749          * This is a simple concurrency check to make sure only one rssclient
 750          * run is done at a time.
 751          */
 752         pthread_mutex_lock(&RSSQueueMutex);
 753         RSSCount = GetCount(RSSFetchUrls);
 754         RSSRoomCount = GetCount(RSSQueueRooms);
 755         pthread_mutex_unlock(&RSSQueueMutex);
 756
 757         if ((RSSRoomCount > 0) || (RSSCount > 0)) {
 758                 EVRSSQ_syslog(LOG_DEBUG,
 759                               "rssclient: concurrency check failed; %d rooms and %d url's are queued",
 760                               RSSRoomCount, RSSCount
 761                         );
 762                 return;
 763         }
 764
 765         become_session(&rss_CC);
 766         EVRSSQM_syslog(LOG_DEBUG, "rssclient started\n");
 767         CtdlForEachRoom(rssclient_scan_room, NULL);
 768
 769         pthread_mutex_lock(&RSSQueueMutex);
 770
 771         it = GetNewHashPos(RSSFetchUrls, 0);
 772         while (!server_shutting_down &&
 773                GetNextHashPos(RSSFetchUrls, it, &len, &Key, &vrptr) &&
 774                (vrptr != NULL)) {
 775                 rptr = (rss_aggregator *)vrptr;
 776                 if (!rss_do_fetching(rptr))
 777                         UnlinkRSSAggregator(rptr);
 778         }
 779         DeleteHashPos(&it);
 780         pthread_mutex_unlock(&RSSQueueMutex);
 781
 782         EVRSSQM_syslog(LOG_DEBUG, "rssclient ended\n");
 783         return;
 784 }
 785
 786 void rss_cleanup(void)
 787 {
 788         /* citthread_mutex_destroy(&RSSQueueMutex); TODO */
 789         DeleteHash(&RSSFetchUrls);
 790         DeleteHash(&RSSQueueRooms);
 791 }
 792
 793 void LogDebugEnableRSSClient(const int n)
 794 {
 795         RSSClientDebugEnabled = n;
 796 }
 797
 798 CTDL_MODULE_INIT(rssclient)
 799 {
 800         if (threading)
 801         {
 802                 CtdlFillSystemContext(&rss_CC, "rssclient");
 803                 pthread_mutex_init(&RSSQueueMutex, NULL);
 804                 RSSQueueRooms = NewHash(1, lFlathash);
 805                 RSSFetchUrls = NewHash(1, NULL);
 806                 syslog(LOG_INFO, "%s\n", curl_version());
 807                 CtdlRegisterSessionHook(rssclient_scan, EVT_TIMER, PRIO_AGGR + 300);
 808                 CtdlRegisterEVCleanupHook(rss_cleanup);
 809                 CtdlRegisterDebugFlagHook(HKEY("rssclient"), LogDebugEnableRSSClient, &RSSClientDebugEnabled);
 810         }
 811         return "rssclient";
 812 }