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 eNextState RSSAggregatorShutdownAbort(AsyncIO *IO);
  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
  93
  94 void DeleteRoomReference(long QRnumber)
  95 {
  96         HashPos *At;
  97         long HKLen;
  98         const char *HK;
  99         void *vData = NULL;
 100         rss_room_counter *pRoomC;
 101
 102         At = GetNewHashPos(RSSQueueRooms, 0);
 103
 104         if (GetHashPosFromKey(RSSQueueRooms, LKEY(QRnumber), At))
 105         {
 106                 GetHashPos(RSSQueueRooms, At, &HKLen, &HK, &vData);
 107                 if (vData != NULL)
 108                 {
 109                         pRoomC = (rss_room_counter *) vData;
 110                         pRoomC->count --;
 111                         if (pRoomC->count == 0)
 112                                 DeleteEntryFromHash(RSSQueueRooms, At);
 113                 }
 114         }
 115         DeleteHashPos(&At);
 116 }
 117
 118 void UnlinkRooms(rss_aggregator *Cfg)
 119 {
 120
 121         DeleteRoomReference(Cfg->QRnumber);
 122         if (Cfg->OtherQRnumbers != NULL)
 123         {
 124                 long HKLen;
 125                 const char *HK;
 126                 HashPos *At;
 127                 void *vData;
 128
 129                 At = GetNewHashPos(Cfg->OtherQRnumbers, 0);
 130                 while (GetNextHashPos(Cfg->OtherQRnumbers, At, &HKLen, &HK, &vData) &&
 131                        (vData != NULL))
 132                 {
 133                         long *lData = (long*) vData;
 134                         DeleteRoomReference(*lData);
 135                 }
 136 /*
 137                 if (server_shutting_down)
 138                         break; / * TODO */
 139
 140                 DeleteHashPos(&At);
 141         }
 142 }
 143
 144 void UnlinkRSSAggregator(rss_aggregator *Cfg)
 145 {
 146         HashPos *At;
 147
 148         UnlinkRooms(Cfg);
 149
 150         At = GetNewHashPos(RSSFetchUrls, 0);
 151         if (GetHashPosFromKey(RSSFetchUrls, SKEY(Cfg->Url), At))
 152         {
 153                 DeleteEntryFromHash(RSSFetchUrls, At);
 154         }
 155         DeleteHashPos(&At);
 156         last_run = time(NULL);
 157 }
 158 /*
 159 eNextState FreeNetworkSaveMessage (AsyncIO *IO)
 160 {
 161         networker_save_message *Ctx = (networker_save_message *) IO->Data;
 162
 163         pthread_mutex_lock(&RSSQueueMutex);
 164         Ctx->Cfg->RefCount --;
 165
 166         if (Ctx->Cfg->RefCount == 0)
 167         {
 168                 UnlinkRSSAggregator(Ctx->Cfg);
 169
 170         }
 171         pthread_mutex_unlock(&RSSQueueMutex);
 172
 173         CtdlFreeMessage(Ctx->Msg);
 174         free_recipients(Ctx->recp);
 175         FreeStrBuf(&Ctx->Message);
 176         FreeStrBuf(&Ctx->MsgGUID);
 177         ((struct CitContext*)IO->CitContext)->state = CON_IDLE;
 178         ((struct CitContext*)IO->CitContext)->kill_me = 1;
 179         free(Ctx);
 180         last_run = time(NULL);
 181         return eAbort;
 182 }
 183 */
 184 void FreeNetworkSaveMessage (void *vMsg)
 185 {
 186         networker_save_message *Msg = (networker_save_message *) vMsg;
 187
 188         CtdlFreeMessage(Msg->Msg);
 189         FreeStrBuf(&Msg->Message);
 190         FreeStrBuf(&Msg->MsgGUID);
 191         free(Msg);
 192 }
 193
 194 eNextState AbortNetworkSaveMessage (AsyncIO *IO)
 195 {
 196         return eAbort; ///TODO
 197 }
 198
 199 eNextState RSSSaveMessage(AsyncIO *IO)
 200 {
 201         long len;
 202         const char *Key;
 203         rss_aggregator *Ctx = (rss_aggregator *) IO->Data;
 204
 205         Ctx->ThisMsg->Msg->cm_fields['M'] = SmashStrBuf(&Ctx->ThisMsg->Message);
 206
 207         CtdlSubmitMsg(Ctx->ThisMsg->Msg, &Ctx->recp, NULL, 0);
 208
 209         /* write the uidl to the use table so we don't store this item again */
 210         cdb_store(CDB_USETABLE, SKEY(Ctx->ThisMsg->MsgGUID), &Ctx->ThisMsg->ut, sizeof(struct UseTable) );
 211
 212         if (GetNextHashPos(Ctx->Messages, Ctx->Pos, &len, &Key, (void**) &Ctx->ThisMsg))
 213                 return NextDBOperation(IO, RSS_FetchNetworkUsetableEntry);
 214         else
 215                 return eAbort;
 216 }
 217
 218 eNextState RSS_FetchNetworkUsetableEntry(AsyncIO *IO)
 219 {
 220         const char *Key;
 221         long len;
 222         struct cdbdata *cdbut;
 223         rss_aggregator *Ctx = (rss_aggregator *) IO->Data;
 224
 225
 226         /* Find out if we've already seen this item */
 227         strcpy(Ctx->ThisMsg->ut.ut_msgid, ChrPtr(Ctx->ThisMsg->MsgGUID)); /// TODO
 228         Ctx->ThisMsg->ut.ut_timestamp = time(NULL);
 229
 230         cdbut = cdb_fetch(CDB_USETABLE, SKEY(Ctx->ThisMsg->MsgGUID));
 231 #ifndef DEBUG_RSS
 232         if (cdbut != NULL) {
 233                 /* Item has already been seen */
 234                 EV_syslog(LOG_DEBUG, "%s has already been seen\n", ChrPtr(Ctx->ThisMsg->MsgGUID));
 235                 cdb_free(cdbut);
 236
 237                 /* rewrite the record anyway, to update the timestamp */
 238                 cdb_store(CDB_USETABLE,
 239                           SKEY(Ctx->ThisMsg->MsgGUID),
 240                           &Ctx->ThisMsg->ut, sizeof(struct UseTable) );
 241
 242                 if (GetNextHashPos(Ctx->Messages, Ctx->Pos, &len, &Key, (void**) &Ctx->ThisMsg))
 243                         return NextDBOperation(IO, RSS_FetchNetworkUsetableEntry);
 244                 else
 245                         return eAbort;
 246         }
 247         else
 248 #endif
 249         {
 250                 NextDBOperation(IO, RSSSaveMessage);
 251                 return eSendMore;
 252         }
 253 }
 254 /*
 255 void RSSAddSaveMessage(struct CtdlMessage *Msg, struct recptypes *recp, StrBuf *MsgGUID, StrBuf *MessageBody, rss_aggregat *Cfg)
 256 {
 257         networker_save_message *Ctx;
 258
 259         pthread_mutex_lock(&RSSQueueMutex);
 260         Cfg->RefCount ++;
 261         pthread_mutex_unlock(&RSSQueueMutex);
 262
 263
 264         Ctx = (networker_save_message *) malloc(sizeof(networker_save_message));
 265         memset(Ctx, 0, sizeof(networker_save_message));
 266
 267         Ctx->MsgGUID = MsgGUID;
 268         Ctx->Message = MessageBody;
 269         Ctx->Msg = Msg;
 270         Ctx->Cfg = Cfg;
 271         Ctx->recp = recp;
 272         Ctx->IO.Data = Ctx;
 273         Ctx->IO.CitContext = CloneContext(&rss_CC);
 274         Ctx->IO.Terminate = FreeNetworkSaveMessage;
 275         Ctx->IO.ShutdownAbort = AbortNetworkSaveMessage;
 276         QueueDBOperation(&Ctx->IO, RSS_FetchNetworkUsetableEntry);
 277 }
 278 */
 279
 280 /*
 281  * Commit a fetched and parsed RSS item to disk
 282  */
 283 void rss_save_item(rss_item *ri, rss_aggregator *Cfg)
 284 {
 285
 286         struct MD5Context md5context;
 287         u_char rawdigest[MD5_DIGEST_LEN];
 288         struct CtdlMessage *msg;
 289         int msglen = 0;
 290         StrBuf *Message;
 291         StrBuf *guid;
 292         AsyncIO *IO = &Cfg->IO;
 293
 294         int n;
 295
 296         /* Construct a GUID to use in the S_USETABLE table.
 297          * If one is not present in the item itself, make one up.
 298          */
 299         if (ri->guid != NULL) {
 300                 StrBufSpaceToBlank(ri->guid);
 301                 StrBufTrim(ri->guid);
 302                 guid = NewStrBufPlain(HKEY("rss/"));
 303                 StrBufAppendBuf(guid, ri->guid, 0);
 304         }
 305         else {
 306                 MD5Init(&md5context);
 307                 if (ri->title != NULL) {
 308                         MD5Update(&md5context, (const unsigned char*)ChrPtr(ri->title), StrLength(ri->title));
 309                 }
 310                 if (ri->link != NULL) {
 311                         MD5Update(&md5context, (const unsigned char*)ChrPtr(ri->link), StrLength(ri->link));
 312                 }
 313                 MD5Final(rawdigest, &md5context);
 314                 guid = NewStrBufPlain(NULL, MD5_DIGEST_LEN * 2 + 12 /* _rss2ctdl*/);
 315                 StrBufHexEscAppend(guid, NULL, rawdigest, MD5_DIGEST_LEN);
 316                 StrBufAppendBufPlain(guid, HKEY("_rss2ctdl"), 0);
 317         }
 318
 319         /* translate Item into message. */
 320         EVM_syslog(LOG_DEBUG, "RSS: translating item...\n");
 321         if (ri->description == NULL) ri->description = NewStrBufPlain(HKEY(""));
 322         StrBufSpaceToBlank(ri->description);
 323         msg = malloc(sizeof(struct CtdlMessage));
 324         memset(msg, 0, sizeof(struct CtdlMessage));
 325         msg->cm_magic = CTDLMESSAGE_MAGIC;
 326         msg->cm_anon_type = MES_NORMAL;
 327         msg->cm_format_type = FMT_RFC822;
 328
 329         if (ri->guid != NULL) {
 330                 msg->cm_fields['E'] = strdup(ChrPtr(ri->guid));
 331         }
 332
 333         if (ri->author_or_creator != NULL) {
 334                 char *From;
 335                 StrBuf *Encoded = NULL;
 336                 int FromAt;
 337
 338                 From = html_to_ascii(ChrPtr(ri->author_or_creator),
 339                                      StrLength(ri->author_or_creator),
 340                                      512, 0);
 341                 StrBufPlain(ri->author_or_creator, From, -1);
 342                 StrBufTrim(ri->author_or_creator);
 343                 free(From);
 344
 345                 FromAt = strchr(ChrPtr(ri->author_or_creator), '@') != NULL;
 346                 if (!FromAt && StrLength (ri->author_email) > 0)
 347                 {
 348                         StrBufRFC2047encode(&Encoded, ri->author_or_creator);
 349                         msg->cm_fields['A'] = SmashStrBuf(&Encoded);
 350                         msg->cm_fields['P'] = SmashStrBuf(&ri->author_email);
 351                 }
 352                 else
 353                 {
 354                         if (FromAt)
 355                         {
 356                                 msg->cm_fields['A'] = SmashStrBuf(&ri->author_or_creator);
 357                                 msg->cm_fields['P'] = strdup(msg->cm_fields['A']);
 358                         }
 359                         else
 360                         {
 361                                 StrBufRFC2047encode(&Encoded, ri->author_or_creator);
 362                                 msg->cm_fields['A'] = SmashStrBuf(&Encoded);
 363                                 msg->cm_fields['P'] = strdup("rss@localhost");
 364
 365                         }
 366                         if (ri->pubdate <= 0) {
 367                                 ri->pubdate = time(NULL);
 368                         }
 369                 }
 370         }
 371         else {
 372                 msg->cm_fields['A'] = strdup("rss");
 373         }
 374
 375         msg->cm_fields['N'] = strdup(NODENAME);
 376         if (ri->title != NULL) {
 377                 long len;
 378                 char *Sbj;
 379                 StrBuf *Encoded, *QPEncoded;
 380
 381                 QPEncoded = NULL;
 382                 StrBufSpaceToBlank(ri->title);
 383                 len = StrLength(ri->title);
 384                 Sbj = html_to_ascii(ChrPtr(ri->title), len, 512, 0);
 385                 len = strlen(Sbj);
 386                 if (Sbj[len - 1] == '\n')
 387                 {
 388                         len --;
 389                         Sbj[len] = '\0';
 390                 }
 391                 Encoded = NewStrBufPlain(Sbj, len);
 392                 free(Sbj);
 393
 394                 StrBufTrim(Encoded);
 395                 StrBufRFC2047encode(&QPEncoded, Encoded);
 396
 397                 msg->cm_fields['U'] = SmashStrBuf(&QPEncoded);
 398                 FreeStrBuf(&Encoded);
 399         }
 400         msg->cm_fields['T'] = malloc(64);
 401         snprintf(msg->cm_fields['T'], 64, "%ld", ri->pubdate);
 402         if (ri->channel_title != NULL) {
 403                 if (StrLength(ri->channel_title) > 0) {
 404                         msg->cm_fields['O'] = strdup(ChrPtr(ri->channel_title));
 405                 }
 406         }
 407         if (ri->link == NULL)
 408                 ri->link = NewStrBufPlain(HKEY(""));
 409
 410 #if 0 /* temporarily disable shorter urls. */
 411         msg->cm_fields[TMP_SHORTER_URLS] = GetShorterUrls(ri->description);
 412 #endif
 413
 414         msglen += 1024 + StrLength(ri->link) + StrLength(ri->description) ;
 415
 416         Message = NewStrBufPlain(NULL, StrLength(ri->description));
 417
 418         StrBufPlain(Message, HKEY(
 419                             "Content-type: text/html; charset=\"UTF-8\"\r\n\r\n"
 420                             "<html><body>\n"));
 421 #if 0 /* disable shorter url for now. */
 422         msg->cm_fields[TMP_SHORTER_URL_OFFSET] = StrLength(Message);
 423 #endif
 424         StrBufAppendBuf(Message, ri->description, 0);
 425         StrBufAppendBufPlain(Message, HKEY("<br><br>\n"), 0);
 426
 427         AppendLink(Message, ri->link, ri->linkTitle, NULL);
 428         AppendLink(Message, ri->reLink, ri->reLinkTitle, "Reply to this");
 429         StrBufAppendBufPlain(Message, HKEY("</body></html>\n"), 0);
 430
 431
 432
 433         networker_save_message *SaveMsg;
 434
 435         SaveMsg = (networker_save_message *) malloc(sizeof(networker_save_message));
 436         memset(SaveMsg, 0, sizeof(networker_save_message));
 437
 438         SaveMsg->MsgGUID = guid;
 439         SaveMsg->Message = Message;
 440         SaveMsg->Msg = msg;
 441
 442         n = GetCount(Cfg->Messages) + 1;
 443         Put(Cfg->Messages, IKEY(n), SaveMsg, FreeNetworkSaveMessage);
 444 }
 445
 446
 447
 448 /*
 449  * Begin a feed parse
 450  */
 451 int rss_do_fetching(rss_aggregator *Cfg)
 452 {
 453         rss_item *ri;
 454
 455         time_t now;
 456         AsyncIO *IO;
 457
 458         now = time(NULL);
 459
 460         if ((Cfg->next_poll != 0) && (now < Cfg->next_poll))
 461                 return 0;
 462
 463         ri = (rss_item*) malloc(sizeof(rss_item));
 464         memset(ri, 0, sizeof(rss_item));
 465         Cfg->Item = ri;
 466         IO = &Cfg->IO;
 467         IO->CitContext = CloneContext(&rss_CC);
 468         IO->Data = Cfg;
 469
 470
 471         syslog(LOG_DEBUG, "Fetching RSS feed <%s>\n", ChrPtr(Cfg->Url));
 472         ParseURL(&IO->ConnectMe, Cfg->Url, 80);
 473         CurlPrepareURL(IO->ConnectMe);
 474
 475         if (! evcurl_init(IO,
 476 //                        Ctx,
 477                           NULL,
 478                           "Citadel RSS Client",
 479                           ParseRSSReply,
 480                           RSSAggregatorTerminate,
 481                           RSSAggregatorShutdownAbort))
 482         {
 483                 syslog(LOG_DEBUG, "Unable to initialize libcurl.\n");
 484                 return 0;
 485         }
 486
 487         QueueCurlContext(IO);
 488         return 1;
 489 }
 490
 491
 492 void DeleteRssCfg(void *vptr)
 493 {
 494         rss_aggregator *rncptr = (rss_aggregator *)vptr;
 495         AsyncIO *IO = &rncptr->IO;
 496         EVM_syslog(LOG_DEBUG, "RSS: destroying\n");
 497
 498         FreeStrBuf(&rncptr->Url);
 499         FreeStrBuf(&rncptr->rooms);
 500         FreeStrBuf(&rncptr->CData);
 501         FreeStrBuf(&rncptr->Key);
 502         FreeStrBuf(&rncptr->IO.HttpReq.ReplyData);
 503         DeleteHash(&rncptr->OtherQRnumbers);
 504         FreeURL(&rncptr->IO.ConnectMe);
 505
 506         DeleteHashPos (&rncptr->Pos);
 507         DeleteHash (&rncptr->Messages);
 508         if (rncptr->recp.recp_room != NULL)
 509                 free(rncptr->recp.recp_room);
 510
 511
 512         if (rncptr->Item != NULL)
 513         {
 514                 FreeStrBuf(&rncptr->Item->guid);
 515                 FreeStrBuf(&rncptr->Item->title);
 516                 FreeStrBuf(&rncptr->Item->link);
 517                 FreeStrBuf(&rncptr->Item->linkTitle);
 518                 FreeStrBuf(&rncptr->Item->reLink);
 519                 FreeStrBuf(&rncptr->Item->reLinkTitle);
 520                 FreeStrBuf(&rncptr->Item->description);
 521                 FreeStrBuf(&rncptr->Item->channel_title);
 522                 FreeStrBuf(&rncptr->Item->author_or_creator);
 523                 FreeStrBuf(&rncptr->Item->author_url);
 524                 FreeStrBuf(&rncptr->Item->author_email);
 525
 526                 free(rncptr->Item);
 527         }
 528         free(rncptr);
 529 }
 530
 531 eNextState RSSAggregatorTerminate(AsyncIO *IO)
 532 {
 533         rss_aggregator *rncptr = (rss_aggregator *)IO->Data;
 534
 535         EVM_syslog(LOG_DEBUG, "RSS: Terminating.\n");
 536
 537
 538         UnlinkRSSAggregator(rncptr);
 539         return eAbort;
 540 }
 541 eNextState RSSAggregatorShutdownAbort(AsyncIO *IO)
 542 {
 543         const char *pUrl;
 544         rss_aggregator *rncptr = (rss_aggregator *)IO->Data;
 545
 546         pUrl = IO->ConnectMe->PlainUrl;
 547         if (pUrl == NULL)
 548                 pUrl = "";
 549
 550         EV_syslog(LOG_DEBUG, "RSS: Aborting by shutdown: %s.\n", pUrl);
 551
 552
 553         UnlinkRSSAggregator(rncptr);
 554         return eAbort;
 555 }
 556
 557 /*
 558  * Scan a room's netconfig to determine whether it is requesting any RSS feeds
 559  */
 560 void rssclient_scan_room(struct ctdlroom *qrbuf, void *data)
 561 {
 562         StrBuf *CfgData=NULL;
 563         StrBuf *CfgType;
 564         StrBuf *Line;
 565         rss_room_counter *Count = NULL;
 566         struct stat statbuf;
 567         char filename[PATH_MAX];
 568         int  fd;
 569         int Done;
 570         rss_aggregator *rncptr = NULL;
 571         rss_aggregator *use_this_rncptr = NULL;
 572         void *vptr;
 573         const char *CfgPtr, *lPtr;
 574         const char *Err;
 575
 576         pthread_mutex_lock(&RSSQueueMutex);
 577         if (GetHash(RSSQueueRooms, LKEY(qrbuf->QRnumber), &vptr))
 578         {
 579                 syslog(LOG_DEBUG,
 580                               "rssclient: [%ld] %s already in progress.\n",
 581                               qrbuf->QRnumber,
 582                               qrbuf->QRname);
 583                 pthread_mutex_unlock(&RSSQueueMutex);
 584                 return;
 585         }
 586         pthread_mutex_unlock(&RSSQueueMutex);
 587
 588         assoc_file_name(filename, sizeof filename, qrbuf, ctdl_netcfg_dir);
 589
 590         if (server_shutting_down)
 591                 return;
 592
 593         /* Only do net processing for rooms that have netconfigs */
 594         fd = open(filename, 0);
 595         if (fd <= 0) {
 596                 //syslog(LOG_DEBUG, "rssclient: %s no config.\n", qrbuf->QRname);
 597                 return;
 598         }
 599
 600         if (server_shutting_down)
 601                 return;
 602
 603         if (fstat(fd, &statbuf) == -1) {
 604                 syslog(LOG_DEBUG, "ERROR: could not stat configfile '%s' - %s\n",
 605                        filename, strerror(errno));
 606                 return;
 607         }
 608
 609         if (server_shutting_down)
 610                 return;
 611
 612         CfgData = NewStrBufPlain(NULL, statbuf.st_size + 1);
 613
 614         if (StrBufReadBLOB(CfgData, &fd, 1, statbuf.st_size, &Err) < 0) {
 615                 close(fd);
 616                 FreeStrBuf(&CfgData);
 617                 syslog(LOG_DEBUG, "ERROR: reading config '%s' - %s<br>\n",
 618                         filename, strerror(errno));
 619                 return;
 620         }
 621         close(fd);
 622         if (server_shutting_down)
 623                 return;
 624
 625         CfgPtr = NULL;
 626         CfgType = NewStrBuf();
 627         Line = NewStrBufPlain(NULL, StrLength(CfgData));
 628         Done = 0;
 629         while (!Done)
 630         {
 631             Done = StrBufSipLine(Line, CfgData, &CfgPtr) == 0;
 632             if (StrLength(Line) > 0)
 633             {
 634                 lPtr = NULL;
 635                 StrBufExtract_NextToken(CfgType, Line, &lPtr, '|');
 636                 if (!strcasecmp("rssclient", ChrPtr(CfgType)))
 637                 {
 638                     if (Count == NULL)
 639                     {
 640                         Count = malloc(sizeof(rss_room_counter));
 641                         Count->count = 0;
 642                     }
 643                     Count->count ++;
 644                     rncptr = (rss_aggregator *) malloc(sizeof(rss_aggregator));
 645                     memset (rncptr, 0, sizeof(rss_aggregator));
 646                     rncptr->roomlist_parts = 1;
 647                     rncptr->Url = NewStrBuf();
 648                     StrBufExtract_NextToken(rncptr->Url, Line, &lPtr, '|');
 649
 650                     pthread_mutex_lock(&RSSQueueMutex);
 651                     GetHash(RSSFetchUrls, SKEY(rncptr->Url), &vptr);
 652                     use_this_rncptr = (rss_aggregator *)vptr;
 653                     if (use_this_rncptr != NULL)
 654                     {
 655                             long *QRnumber;
 656                             StrBufAppendBufPlain(use_this_rncptr->rooms,
 657                                                  qrbuf->QRname,
 658                                                  -1, 0);
 659                             if (use_this_rncptr->roomlist_parts == 1)
 660                             {
 661                                     use_this_rncptr->OtherQRnumbers = NewHash(1, lFlathash);
 662                             }
 663                             QRnumber = (long*)malloc(sizeof(long));
 664                             *QRnumber = qrbuf->QRnumber;
 665                             Put(use_this_rncptr->OtherQRnumbers, LKEY(qrbuf->QRnumber), QRnumber, NULL);
 666                             use_this_rncptr->roomlist_parts++;
 667
 668                             pthread_mutex_unlock(&RSSQueueMutex);
 669
 670                             FreeStrBuf(&rncptr->Url);
 671                             free(rncptr);
 672                             rncptr = NULL;
 673                             continue;
 674                     }
 675                     pthread_mutex_unlock(&RSSQueueMutex);
 676
 677                     rncptr->ItemType = RSS_UNSET;
 678
 679                     rncptr->rooms = NewStrBufPlain(qrbuf->QRname, -1);
 680
 681                     pthread_mutex_lock(&RSSQueueMutex);
 682                     Put(RSSFetchUrls, SKEY(rncptr->Url), rncptr, DeleteRssCfg);
 683                     pthread_mutex_unlock(&RSSQueueMutex);
 684                 }
 685             }
 686         }
 687         if (Count != NULL)
 688         {
 689                 Count->QRnumber = qrbuf->QRnumber;
 690                 pthread_mutex_lock(&RSSQueueMutex);
 691                 syslog(LOG_DEBUG, "rssclient: [%ld] %s now starting.\n",
 692                               qrbuf->QRnumber, qrbuf->QRname);
 693                 Put(RSSQueueRooms, LKEY(qrbuf->QRnumber), Count, NULL);
 694                 pthread_mutex_unlock(&RSSQueueMutex);
 695         }
 696         FreeStrBuf(&CfgData);
 697         FreeStrBuf(&CfgType);
 698         FreeStrBuf(&Line);
 699 }
 700
 701 /*
 702  * Scan for rooms that have RSS client requests configured
 703  */
 704 void rssclient_scan(void) {
 705         static int doing_rssclient = 0;
 706         rss_aggregator *rptr = NULL;
 707         void *vrptr = NULL;
 708         HashPos  *it;
 709         long len;
 710         const char *Key;
 711
 712         /* Run no more than once every 15 minutes. */
 713         if ((time(NULL) - last_run) < 900) {
 714                 return;
 715         }
 716
 717         /*
 718          * This is a simple concurrency check to make sure only one rssclient run
 719          * is done at a time.  We could do this with a mutex, but since we
 720          * don't really require extremely fine granularity here, we'll do it
 721          * with a static variable instead.
 722          */
 723         if (doing_rssclient) return;
 724         doing_rssclient = 1;
 725         if ((GetCount(RSSQueueRooms) > 0) || (GetCount(RSSFetchUrls) > 0))
 726                 return;
 727
 728         syslog(LOG_DEBUG, "rssclient started\n");
 729         CtdlForEachRoom(rssclient_scan_room, NULL);
 730
 731         pthread_mutex_lock(&RSSQueueMutex);
 732
 733         it = GetNewHashPos(RSSFetchUrls, 0);
 734         while (!server_shutting_down &&
 735                GetNextHashPos(RSSFetchUrls, it, &len, &Key, &vrptr) &&
 736                (vrptr != NULL)) {
 737                 rptr = (rss_aggregator *)vrptr;
 738                 if (!rss_do_fetching(rptr))
 739                         UnlinkRSSAggregator(rptr);
 740         }
 741         DeleteHashPos(&it);
 742         pthread_mutex_unlock(&RSSQueueMutex);
 743
 744         syslog(LOG_DEBUG, "rssclient ended\n");
 745         doing_rssclient = 0;
 746         return;
 747 }
 748
 749 void rss_cleanup(void)
 750 {
 751         /* citthread_mutex_destroy(&RSSQueueMutex); TODO */
 752         DeleteHash(&RSSFetchUrls);
 753         DeleteHash(&RSSQueueRooms);
 754 }
 755
 756
 757 CTDL_MODULE_INIT(rssclient)
 758 {
 759         if (threading)
 760         {
 761                 CtdlFillSystemContext(&rss_CC, "rssclient");
 762                 pthread_mutex_init(&RSSQueueMutex, NULL);
 763                 RSSQueueRooms = NewHash(1, lFlathash);
 764                 RSSFetchUrls = NewHash(1, NULL);
 765                 syslog(LOG_INFO, "%s\n", curl_version());
 766                 CtdlRegisterSessionHook(rssclient_scan, EVT_TIMER);
 767                 CtdlRegisterCleanupHook(rss_cleanup);
 768         }
 769         return "rssclient";
 770 }