/*
- * $Id$
+ * Bring external RSS and/or Atom feeds into rooms. This module implements a
+ * very loose parser that scrapes both kinds of feeds and is not picky about
+ * the standards compliance of the source data.
*
- * Bring external RSS feeds into rooms.
+ * Copyright (c) 2007-2020 by the citadel.org team
*
- * Copyright (c) 2007-2009 by the citadel.org team
+ * This program is open source software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version 3.
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
*/
#include <stdlib.h>
# include <time.h>
#else
# if HAVE_SYS_TIME_H
-# include <sys/time.h>
+#include <sys/time.h>
# else
-# include <time.h>
+#include <time.h>
# endif
#endif
#include "config.h"
#include "threads.h"
#include "ctdl_module.h"
-#include "clientsocket.h"
#include "msgbase.h"
#include "parsedate.h"
#include "database.h"
#include "citadel_dirs.h"
-#include "md5.h"
#include "context.h"
+#include "internet_addressing.h"
-typedef struct rssnetcfg rssnetcfg;
+struct rssroom {
+ struct rssroom *next;
+ char *room;
+};
-struct rssnetcfg {
- rssnetcfg *next;
- char url[256];
- char *rooms;
- time_t last_error_when;
- int ItemType;
+struct rssurl {
+ struct rssurl *next;
+ char *url;
+ struct rssroom *rooms;
};
-#define RSS_UNSET 0
-#define RSS_RSS 1
-#define RSS_ATOM 2
-
-typedef struct _rss_item {
- char *chardata;
- int chardata_len;
- char *roomlist;
- int done_parsing;
- char *guid;
- char *title;
+struct rssparser {
+ StrBuf *CData;
+ struct CtdlMessage *msg;
char *link;
char *description;
- time_t pubdate;
- char channel_title[256];
- int item_tag_nesting;
- char *author_or_creator;
- char *author_url;
-}rss_item;
-
-
-typedef struct _rsscollection {
- rss_item *Item;
- rssnetcfg *Cfg;
-
-
-} rsscollection;
-
-struct rssnetcfg *rnclist = NULL;
-
-
-#if 0
-#ifdef HAVE_ICONV
-#include <iconv.h>
-
+ char *item_id;
+ struct rssroom *rooms;
+};
-/*
- * dug this out of the trashcan of the midgard project, lets see if it works for us.
- * original code by Alexander Bokovoy <bokovoy@avilink.ne> distributed under GPL V2 or later
- */
+time_t last_run = 0L;
+struct rssurl *rsstodo = NULL;
-/* Returns:
- >= 0 - successfull, 0 means conversion doesn't use multibyte sequences
- -1 - error during iconv_open call
- -2 - error during iconv_close call
- ----------------------------------
- This function expects that multibyte encoding in 'charset' wouldn't have
- characters with more than 3 bytes. It is not intended to convert UTF-8 because
- we'll never receive UTF-8 in our handler (it is handled by Exat itself).
-*/
-static int
-fill_encoding_info (const char *charset, XML_Encoding * info)
-{
- iconv_t cd = (iconv_t)(-1);
- int flag;
- CtdlLogPrintf(0, "RSS: fill encoding info ...\n");
-
-#if G_BYTE_ORDER == G_LITTLE_ENDIAN
- cd = iconv_open ("UCS-2LE", charset);
-#else
- cd = iconv_open ("UCS-2BE", charset);
-#endif
-
- if (cd == (iconv_t) (-1))
- {
- return -1;
- }
-
- {
- unsigned short out;
- unsigned char buf[4];
- unsigned int i0, i1, i2;
- int result;
- flag = 0;
- for (i0 = 0; i0 < 0x100; i0++)
- {
- buf[0] = i0;
- info->map[i0] = 0;
- //result = try (cd, buf, 1, &out);
- if (result < 0)
- {
- }
- else if (result > 0)
- {
- info->map[i0] = out;
- }
- else
- {
- for (i1 = 0; i1 < 0x100; i1++)
- {
- buf[1] = i1;
- ///result = try (cd, buf, 2, &out);
- if (result < 0)
- {
- }
- else if (result > 0)
- {
- flag++;
- info->map[i0] = -2;
- }
- else
- {
- for (i2 = 0; i2 < 0x100; i2++)
- {
- buf[2] = i2;
- ////result = try (cd, buf, 3, &out);
- if (result < 0)
- {
- }
- else if (result > 0)
- {
- flag++;
- info->map[i0] = -3;
- }
- }
- }
- }
- }
- }
- }
-
- if (iconv_close (cd) < 0)
- {
- return -2;
- }
- return flag;
-}
-
-static int
-iconv_convertor (void *data, const char *s)
-{
- XML_Encoding *info = data;
- int res;
- CtdlLogPrintf(0, "RSS: Converting ...\n");
-
- if (s == NULL)
- return -1;
-/*
- GByteArray *result;
- result = g_byte_array_new ();
- if (process_block (info->data, (char *) s, strlen (s), result) == 0)
- {
- res = *(result->data);
- g_byte_array_free (result, TRUE);
- return res;
- }
- g_byte_array_free (result, TRUE);
-*/
- return -1;
-}
-
-static void
-my_release (void *data)
-{
- iconv_t cd = (iconv_t) data;
- if (iconv_close (cd) != 0)
- {
-/// TODO: uh no. exit (1);
- }
-}
-int
-handle_unknown_xml_encoding (void *encodingHandleData,
- const XML_Char * name,
- XML_Encoding * info)
-{
- int result;
- CtdlLogPrintf(0, "RSS: unknown encoding ...\n");
- result = fill_encoding_info (name, info);
- if (result >= 0)
- {
- /*
- Special case: client asked for reverse conversion, we'll provide him with
- iconv descriptor which handles it. Client should release it by himself.
- */
- if(encodingHandleData != NULL)
- *((iconv_t *)encodingHandleData) = iconv_open(name, "UTF-8");
- /*
- Optimization: we do not need conversion function if encoding is one-to-one,
- info->map table will be enough
- */
- if (result == 0)
- {
- info->data = NULL;
- info->convert = NULL;
- info->release = NULL;
- return 1;
- }
- /*
- We do need conversion function because this encoding uses multibyte sequences
- */
- info->data = (void *) iconv_open ("UTF-8", name);
- if ((int)info->data == -1)
- return -1;
- info->convert = iconv_convertor;
- info->release = my_release;
- return 1;
- }
- if(encodingHandleData != NULL)
- *(iconv_t *)encodingHandleData = NULL;
- return 0;
-}
-#endif
-#endif
-
-/*
- * Commit a fetched and parsed RSS item to disk
- */
-void rss_save_item(rsscollection *rssc) {
-
- struct MD5Context md5context;
- u_char rawdigest[MD5_DIGEST_LEN];
+// This handler is called whenever an XML tag opens.
+//
+void rss_start_element(void *data, const char *el, const char **attribute)
+{
+ struct rssparser *r = (struct rssparser *)data;
int i;
- char utmsgid[SIZ];
- struct cdbdata *cdbut;
- struct UseTable ut;
- struct CtdlMessage *msg;
- struct recptypes *recp = NULL;
- int msglen = 0;
- rss_item *ri = rssc->Item;
-
- recp = (struct recptypes *) malloc(sizeof(struct recptypes));
- if (recp == NULL) return;
- memset(recp, 0, sizeof(struct recptypes));
- recp->recp_room = strdup(ri->roomlist);
- recp->num_room = num_tokens(ri->roomlist, '|');
- recp->recptypes_magic = RECPTYPES_MAGIC;
-
- /* Construct a GUID to use in the S_USETABLE table.
- * If one is not present in the item itself, make one up.
- */
- if (ri->guid != NULL) {
- snprintf(utmsgid, sizeof utmsgid, "rss/%s", ri->guid);
- }
- else {
- MD5Init(&md5context);
- if (ri->title != NULL) {
- MD5Update(&md5context, (unsigned char*)ri->title, strlen(ri->title));
- }
- if (ri->link != NULL) {
- MD5Update(&md5context, (unsigned char*)ri->link, strlen(ri->link));
- }
- MD5Final(rawdigest, &md5context);
- for (i=0; i<MD5_DIGEST_LEN; i++) {
- sprintf(&utmsgid[i*2], "%02X", (unsigned char) (rawdigest[i] & 0xff));
- utmsgid[i*2] = tolower(utmsgid[i*2]);
- utmsgid[(i*2)+1] = tolower(utmsgid[(i*2)+1]);
- }
- strcat(utmsgid, "_rss2ctdl");
- }
-
- /* Find out if we've already seen this item */
- cdbut = cdb_fetch(CDB_USETABLE, utmsgid, strlen(utmsgid));
- if (cdbut != NULL) {
- /* Item has already been seen */
- CtdlLogPrintf(CTDL_DEBUG, "%s has already been seen\n", utmsgid);
- cdb_free(cdbut);
-
- /* rewrite the record anyway, to update the timestamp */
- strcpy(ut.ut_msgid, utmsgid);
- ut.ut_timestamp = time(NULL);
- cdb_store(CDB_USETABLE, utmsgid, strlen(utmsgid), &ut, sizeof(struct UseTable) );
- }
- else {
- /* Item has not been seen, so save it. */
- CtdlLogPrintf(CTDL_DEBUG, "RSS: saving item...\n");
- if (ri->description == NULL) ri->description = strdup("");
- for (i=strlen(ri->description); i>=0; --i) {
- if (isspace(ri->description[i])) {
- ri->description[i] = ' ';
- }
- }
-
- msg = malloc(sizeof(struct CtdlMessage));
- memset(msg, 0, sizeof(struct CtdlMessage));
- msg->cm_magic = CTDLMESSAGE_MAGIC;
- msg->cm_anon_type = MES_NORMAL;
- msg->cm_format_type = FMT_RFC822;
- if (ri->guid != NULL) {
- msg->cm_fields['E'] = strdup(ri->guid);
+ if (
+ (!strcasecmp(el, "entry"))
+ || (!strcasecmp(el, "item"))
+ ) {
+ // this is the start of a new item(rss) or entry(atom)
+ if (r->msg != NULL) {
+ CM_Free(r->msg);
+ r->msg = NULL;
}
-
- if (ri->author_or_creator != NULL) {
- msg->cm_fields['A'] = html_to_ascii(ri->author_or_creator,
- strlen(ri->author_or_creator), 512, 0);
- striplt(msg->cm_fields['A']);
- }
- else {
- msg->cm_fields['A'] = strdup("rss");
- }
-
- msg->cm_fields['N'] = strdup(NODENAME);
- if (ri->title != NULL) {
- msg->cm_fields['U'] = html_to_ascii(ri->title, strlen(ri->title), 512, 0);
- striplt(msg->cm_fields['U']);
- }
- msg->cm_fields['T'] = malloc(64);
- snprintf(msg->cm_fields['T'], 64, "%ld", ri->pubdate);
- if (ri->channel_title != NULL) {
- if (!IsEmptyStr(ri->channel_title)) {
- msg->cm_fields['O'] = strdup(ri->channel_title);
+ r->msg = malloc(sizeof(struct CtdlMessage));
+ memset(r->msg, 0, sizeof(struct CtdlMessage));
+ r->msg->cm_magic = CTDLMESSAGE_MAGIC;
+ r->msg->cm_anon_type = MES_NORMAL;
+ r->msg->cm_format_type = FMT_RFC822;
+ }
+
+ else if (!strcasecmp(el, "link")) { // atom feeds have the link as an attribute
+ for(i = 0; attribute[i]; i += 2) {
+ if (!strcasecmp(attribute[i], "href")) {
+ if (r->link != NULL) {
+ free(r->link);
+ r->link = NULL;
+ }
+ r->link = strdup(attribute[i+1]);
+ striplt(r->link);
}
}
- if (ri->link == NULL)
- ri->link = strdup("");
- msglen += 1024 + strlen(ri->link) + strlen(ri->description) ;
- msg->cm_fields['M'] = malloc(msglen);
- snprintf(msg->cm_fields['M'], msglen,
- "Content-type: text/html; charset=\"UTF-8\"\r\n\r\n"
- "<html><body>\n"
- "%s<br><br>\n"
- "<a href=\"%s\">%s</a>\n"
- "</body></html>\n"
- ,
- ri->description,
- ri->link, ri->link
- );
-
- CtdlSubmitMsg(msg, recp, NULL, 0);
- CtdlFreeMessage(msg);
-
- /* write the uidl to the use table so we don't store this item again */
- strcpy(ut.ut_msgid, utmsgid);
- ut.ut_timestamp = time(NULL);
- cdb_store(CDB_USETABLE, utmsgid, strlen(utmsgid), &ut, sizeof(struct UseTable) );
}
- free_recipients(recp);
}
-
-/*
- * Convert an RDF/RSS datestamp into a time_t
- */
-time_t rdf_parsedate(char *p)
+// This handler is called whenever an XML tag closes.
+//
+void rss_end_element(void *data, const char *el)
{
- struct tm tm;
- time_t t = 0;
-
- if (!p) return 0L;
- if (strlen(p) < 10) return 0L;
-
- memset(&tm, 0, sizeof tm);
-
- /*
- * If the timestamp appears to be in W3C datetime format, try to
- * parse it. See also: http://www.w3.org/TR/NOTE-datetime
- *
- * This code, along with parsedate.c, is a potential candidate for
- * moving into libcitadel.
- */
- if ( (p[4] == '-') && (p[7] == '-') ) {
- tm.tm_year = atoi(&p[0]) - 1900;
- tm.tm_mon = atoi(&p[5]) - 1;
- tm.tm_mday = atoi(&p[8]);
- if ( (p[10] == 'T') && (p[13] == ':') ) {
- tm.tm_hour = atoi(&p[11]);
- tm.tm_min = atoi(&p[14]);
- }
- return mktime(&tm);
- }
-
- /* hmm... try RFC822 date stamp format */
-
- t = parsedate(p);
- if (t > 0) return(t);
+ struct rssparser *r = (struct rssparser *)data;
+ StrBuf *encoded_field;
- /* yeesh. ok, just return the current date and time. */
- return(time(NULL));
-}
-
-#define RSS_UNSET 0
-#define RSS_RSS 1
-#define RSS_ATOM 2
-
-void flush_rss_ite(rss_item *ri)
-{
- /* Initialize the feed item data structure */
- if (ri->guid != NULL) free(ri->guid);
- ri->guid = NULL;
- if (ri->title != NULL) free(ri->title);
- ri->title = NULL;
- if (ri->link != NULL) free(ri->link);
- ri->link = NULL;
- if (ri->author_or_creator != NULL) free(ri->author_or_creator);
- ri->author_or_creator = NULL;
- if (ri->author_url != NULL) free(ri->author_url);
- ri->author_url = NULL;
- if (ri->description != NULL) free(ri->description);
- ri->description = NULL;
- /* Throw away any existing character data */
- if (ri->chardata_len > 0) {
- free(ri->chardata);
- ri->chardata = 0;
- ri->chardata_len = 0;
+ if (StrLength(r->CData) > 0) { // strip leading/trailing whitespace from field
+ StrBufTrim(r->CData);
}
-}
-void rss_xml_start(void *data, const char *supplied_el, const char **attr) {
- rsscollection *rssc = (rsscollection*) data;
- rss_item *ri = rssc->Item;
- char el[256];
- char *sep = NULL;
-
- /* Axe the namespace, we don't care about it */
-/// CtdlLogPrintf(0, "RSS: supplied el %d: %s...\n", rssc->Cfg->ItemType, supplied_el);
- safestrncpy(el, supplied_el, sizeof el);
- while (sep = strchr(el, ':'), sep) {
- strcpy(el, ++sep);
- }
+ if ( // end of a new item(rss) or entry(atom)
+ (!strcasecmp(el, "entry"))
+ || (!strcasecmp(el, "item"))
+ ) {
+ if (r->msg != NULL) { // Save the message to the rooms
- if ((rssc->Cfg->ItemType == RSS_UNSET) && !strcasecmp(el, "rss"))
- {
- CtdlLogPrintf(9, "RSS: This is an RSS feed.\n");
- rssc->Cfg->ItemType = RSS_RSS;
- }
- if ((rssc->Cfg->ItemType == RSS_UNSET) && !strcasecmp(el, "rdf"))
- {
- CtdlLogPrintf(9, "RSS: This is an RDF feed.\n");
- rssc->Cfg->ItemType = RSS_RSS;
- }
- else if ((rssc->Cfg->ItemType == RSS_UNSET) && !strcasecmp(el, "feed"))
- {
- CtdlLogPrintf(9, "RSS: This is an ATOM feed.\n");
- rssc->Cfg->ItemType = RSS_ATOM;
- }
- else if ((rssc->Cfg->ItemType == RSS_RSS) &&
- !strcasecmp(el, "item"))
- {
- ri->item_tag_nesting ++ ;
- flush_rss_ite(ri);
- }
- else if ( (rssc->Cfg->ItemType == RSS_ATOM) &&
- !strcasecmp(el, "entry"))
- { /* Atom feed... */
- ++ri->item_tag_nesting;
- flush_rss_ite(ri);
- }
- else if ((rssc->Cfg->ItemType == RSS_ATOM) &&
- !strcasecmp(el, "link"))
- {
- int found ;
- int i;
-
- for (found = 0, i = 0;!found && attr[i] != NULL; i+=2)
- {
- if (!strcmp(attr[i], "href"))
- {
- found = 1;
- if (ri->link != NULL)
- free(ri->link);
- ri->link = strdup(attr[i+1]);
- striplt(ri->link);
+ // use the link as an item id if nothing else is available
+ if ((r->item_id == NULL) && (r->link != NULL)) {
+ r->item_id = strdup(r->link);
}
+
+ // check the use table
+ StrBuf *u = NewStrBuf();
+ StrBufAppendPrintf(u, "rss/%s", r->item_id);
+ int already_seen = CheckIfAlreadySeen(u);
+ FreeStrBuf(&u);
+
+ if (already_seen == 0) {
+
+ // Compose the message text
+ StrBuf *TheMessage = NewStrBuf();
+ StrBufAppendPrintf(TheMessage,
+ "Content-type: text/html\n\n"
+ "\n\n"
+ "<html><head></head><body>"
+ );
+
+ if (r->description != NULL) {
+ StrBufAppendPrintf(TheMessage, "%s<br><br>\r\n", r->description);
+ free(r->description);
+ r->description = NULL;
+ }
+
+ if (r->link != NULL) {
+ StrBufAppendPrintf(TheMessage, "<a href=\"%s\">%s</a>\r\n", r->link, r->link);
+ free(r->link);
+ r->link = NULL;
+ }
+
+ StrBufAppendPrintf(TheMessage, "</body></html>\r\n");
+ CM_SetField(r->msg, eMesageText, ChrPtr(TheMessage), StrLength(TheMessage));
+ FreeStrBuf(&TheMessage);
+
+ if (CM_IsEmpty(r->msg, eAuthor)) {
+ CM_SetField(r->msg, eAuthor, HKEY("rss"));
+ }
+
+ if (CM_IsEmpty(r->msg, eTimestamp)) {
+ CM_SetFieldLONG(r->msg, eTimestamp, time(NULL));
+ }
+
+ // Save it to the room(s)
+ struct rssroom *rr = NULL;
+ long msgnum = (-1);
+ for (rr=r->rooms; rr!=NULL; rr=rr->next) {
+ if (rr == r->rooms) {
+ msgnum = CtdlSubmitMsg(r->msg, NULL, rr->room); // in first room, save msg
+ }
+ else {
+ CtdlSaveMsgPointerInRoom(rr->room, msgnum, 0, NULL); // elsewhere, save a pointer
+ }
+ syslog(LOG_DEBUG, "rssclient: saved message %ld to %s", msgnum, rr->room);
+ }
+ }
+ else {
+ syslog(LOG_DEBUG, "rssclient: already seen %s", r->item_id);
+ }
+
+ CM_Free(r->msg);
+ r->msg = NULL;
}
+ if (r->item_id != NULL) {
+ free(r->item_id);
+ r->item_id = NULL;
+ }
}
-}
-
-void rss_xml_end(void *data, const char *supplied_el) {
- rsscollection *rssc = (rsscollection*) data;
- rss_item *ri = rssc->Item;
- char el[256];
- char *sep = NULL;
-
- /* Axe the namespace, we don't care about it */
- safestrncpy(el, supplied_el, sizeof el);
- while (sep = strchr(el, ':'), sep) {
- strcpy(el, ++sep);
+ else if (!strcasecmp(el, "title")) { // item subject (rss and atom)
+ if ((r->msg != NULL) && (CM_IsEmpty(r->msg, eMsgSubject))) {
+ encoded_field = NewStrBuf();
+ StrBufRFC2047encode(&encoded_field, r->CData);
+ CM_SetAsFieldSB(r->msg, eMsgSubject, &encoded_field);
+ }
}
-// CtdlLogPrintf(0, "RSS: END %s...\n", el);
- if ( (!strcasecmp(el, "title")) && (ri->item_tag_nesting == 0) && (ri->chardata != NULL) ) {
- safestrncpy(ri->channel_title, ri->chardata, sizeof ri->channel_title);
- striplt(ri->channel_title);
+ else if (!strcasecmp(el, "creator")) { // <creator> can be used if <author> is not present
+ if ((r->msg != NULL) && (CM_IsEmpty(r->msg, eAuthor))) {
+ encoded_field = NewStrBuf();
+ StrBufRFC2047encode(&encoded_field, r->CData);
+ CM_SetAsFieldSB(r->msg, eAuthor, &encoded_field);
+ }
}
- if ( (rssc->Cfg->ItemType == RSS_RSS) &&
- (!strcasecmp(el, "guid")) && (ri->chardata != NULL) ) {
- if (ri->guid != NULL) free(ri->guid);
- striplt(ri->chardata);
- ri->guid = strdup(ri->chardata);
- }
- else if ( (rssc->Cfg->ItemType == RSS_ATOM) &&
- (!strcasecmp(el, "id")) && (ri->chardata != NULL) ) {
- if (ri->guid != NULL) free(ri->guid);
- striplt(ri->chardata);
- ri->guid = strdup(ri->chardata);
+ else if (!strcasecmp(el, "author")) { // <author> supercedes <creator> if both are present
+ if (r->msg != NULL) {
+ encoded_field = NewStrBuf();
+ StrBufRFC2047encode(&encoded_field, r->CData);
+ CM_SetAsFieldSB(r->msg, eAuthor, &encoded_field);
+ }
}
- else if ( (rssc->Cfg->ItemType == RSS_RSS) && (!strcasecmp(el, "link")) && (ri->chardata != NULL) ) {
- if (ri->link != NULL) free(ri->link);
- striplt(ri->chardata);
- ri->link = strdup(ri->chardata);
+ else if (!strcasecmp(el, "pubdate")) { // date/time stamp (rss) Sat, 25 Feb 2017 14:28:01 EST
+ if ((r->msg)&&(r->msg->cm_fields[eTimestamp]==NULL)) {
+ CM_SetFieldLONG(r->msg, eTimestamp, parsedate(ChrPtr(r->CData)));
+ }
}
- else if ( (!strcasecmp(el, "title")) && (ri->chardata != NULL) ) {
- if (ri->title != NULL) free(ri->title);
- striplt(ri->chardata);
- ri->title = strdup(ri->chardata);
+ else if (!strcasecmp(el, "updated")) { // date/time stamp (atom) 2003-12-13T18:30:02Z
+ if ((r->msg)&&(r->msg->cm_fields[eTimestamp]==NULL)) {
+ struct tm t;
+ char zulu;
+ memset(&t, 0, sizeof t);
+ sscanf(ChrPtr(r->CData), "%d-%d-%dT%d:%d:%d%c", &t.tm_year, &t.tm_mon, &t.tm_mday, &t.tm_hour, &t.tm_min, &t.tm_sec, &zulu);
+ t.tm_year -= 1900;
+ t.tm_mon -= 1;
+ CM_SetFieldLONG(r->msg, eTimestamp, mktime(&t));
+ }
}
- else if ((rssc->Cfg->ItemType == RSS_ATOM) &&
- (!strcasecmp(el, "content")) &&
- (ri->chardata != NULL) ) {
- if (ri->description != NULL) free(ri->description);
- ri->description = strdup(ri->chardata);
- }
- else if ( (rssc->Cfg->ItemType == RSS_RSS) &&
- (!strcasecmp(el, "description")) &&
- (ri->chardata != NULL) ) {
- if (ri->description != NULL) free(ri->description);
- ri->description = strdup(ri->chardata);
- }
-
- else if ((rssc->Cfg->ItemType == RSS_ATOM) &&
- ((!strcasecmp(el, "published")) ||
- (!strcasecmp(el, "updated"))) &&
- (ri->chardata != NULL) ) {
- striplt(ri->chardata);
- ri->pubdate = rdf_parsedate(ri->chardata);
+ else if (!strcasecmp(el, "link")) { // link to story (rss)
+ if (r->link != NULL) {
+ free(r->link);
+ r->link = NULL;
+ }
+ r->link = strdup(ChrPtr(r->CData));
}
-
- else if ((rssc->Cfg->ItemType == RSS_RSS) &&
- ((!strcasecmp(el, "pubdate")) ||
- (!strcasecmp(el, "date"))) &&
- (ri->chardata != NULL) ) {
- striplt(ri->chardata);
- ri->pubdate = rdf_parsedate(ri->chardata);
+ else if (
+ (!strcasecmp(el, "guid")) // unique item id (rss)
+ || (!strcasecmp(el, "id")) // unique item id (atom)
+ ) {
+ if (r->item_id != NULL) {
+ free(r->item_id);
+ r->item_id = NULL;
+ }
+ r->item_id = strdup(ChrPtr(r->CData));
}
- else if ((rssc->Cfg->ItemType == RSS_RSS) &&
- ((!strcasecmp(el, "author")) ||
- (!strcasecmp(el, "creator"))) &&
- (ri->chardata != NULL) ) {
- if (ri->author_or_creator != NULL) free(ri->author_or_creator);
- striplt(ri->chardata);
- ri->author_or_creator = strdup(ri->chardata);
+ else if (
+ (!strcasecmp(el, "description")) // message text (rss)
+ || (!strcasecmp(el, "summary")) // message text (atom)
+ || (!strcasecmp(el, "content")) // message text (atom)
+ ) {
+ if (r->description != NULL) {
+ free(r->description);
+ r->description = NULL;
+ }
+ r->description = strdup(ChrPtr(r->CData));
}
- else if ((rssc->Cfg->ItemType == RSS_ATOM) &&
- (!strcasecmp(el, "name")) &&
- (ri->chardata != NULL) ) {
- if (ri->author_or_creator != NULL) free(ri->author_or_creator);
- striplt(ri->chardata);
- ri->author_or_creator = strdup(ri->chardata);
- }
- else if ((rssc->Cfg->ItemType == RSS_ATOM) &&
- (!strcasecmp(el, "uri")) &&
- (ri->chardata != NULL) ) {
- if (ri->author_url != NULL) free(ri->author_url);
- striplt(ri->chardata);
- ri->author_url = strdup(ri->chardata);
+ if (r->CData != NULL) {
+ FreeStrBuf(&r->CData);
+ r->CData = NULL;
}
+}
- else if ((rssc->Cfg->ItemType == RSS_RSS) &&
- !strcasecmp(el, "item")) {
- --ri->item_tag_nesting;
- rss_save_item(rssc);
- }
- else if ((rssc->Cfg->ItemType == RSS_ATOM) &&
- !strcasecmp(el, "entry")) {
- --ri->item_tag_nesting;
- rss_save_item(rssc);
- }
- else if ( (!strcasecmp(el, "rss")) ||
- (!strcasecmp(el, "rdf")) ) {
-// CtdlLogPrintf(CTDL_DEBUG, "End of feed detected. Closing parser.\n");
- ri->done_parsing = 1;
- }
+// This handler is called whenever data appears between opening and closing tags.
+//
+void rss_handle_data(void *data, const char *content, int length)
+{
+ struct rssparser *r = (struct rssparser *)data;
- if (ri->chardata_len > 0) {
- free(ri->chardata);
- ri->chardata = 0;
- ri->chardata_len = 0;
+ if (r->CData == NULL) {
+ r->CData = NewStrBuf();
}
+ StrBufAppendBufPlain(r->CData, content, length, 0);
}
-/*
- * This callback stores up the data which appears in between tags.
- */
-void rss_xml_chardata(void *data, const XML_Char *s, int len) {
- rsscollection *rssc = (rsscollection*) data;
- rss_item *ri = rssc->Item;
- int old_len;
- int new_len;
- char *new_buffer;
-
- old_len = ri->chardata_len;
- new_len = old_len + len;
- new_buffer = realloc(ri->chardata, new_len + 1);
- if (new_buffer != NULL) {
- memcpy(&new_buffer[old_len], s, len);
- new_buffer[new_len] = 0;
- ri->chardata = new_buffer;
- ri->chardata_len = new_len;
- }
+// Feed has been downloaded, now parse it.
+//
+void rss_parse_feed(StrBuf *Feed, struct rssroom *rooms)
+{
+ struct rssparser r;
+
+ memset(&r, 0, sizeof r);
+ r.rooms = rooms;
+ XML_Parser p = XML_ParserCreate("UTF-8");
+ XML_SetElementHandler(p, rss_start_element, rss_end_element);
+ XML_SetCharacterDataHandler(p, rss_handle_data);
+ XML_SetUserData(p, (void *)&r);
+ XML_Parse(p, ChrPtr(Feed), StrLength(Feed), XML_TRUE);
+ XML_ParserFree(p);
}
-
-/*
- * Callback function for passing libcurl's output to expat for parsing
- */
-size_t rss_libcurl_callback(void *ptr, size_t size, size_t nmemb, void *stream)
+// Add a feed/room pair into the todo list
+//
+void rssclient_push_todo(char *rssurl, char *roomname)
{
- XML_Parse((XML_Parser)stream, ptr, (size * nmemb), 0);
- return (size*nmemb);
-}
+ struct rssurl *r = NULL;
+ struct rssurl *thisone = NULL;
+ struct rssroom *newroom = NULL;
+ syslog(LOG_DEBUG, "rssclient: will fetch %s to %s", rssurl, roomname);
+ for (r=rsstodo; r!=NULL; r=r->next) {
+ if (!strcasecmp(r->url, rssurl)) {
+ thisone = r;
+ }
+ }
-/*
- * Begin a feed parse
- */
-void rss_do_fetching(rssnetcfg *Cfg) {
- rsscollection rssc;
- rss_item ri;
- XML_Parser xp;
+ if (thisone == NULL) {
+ thisone = malloc(sizeof(struct rssurl));
+ thisone->url = strdup(rssurl);
+ thisone->rooms = NULL;
+ thisone->next = rsstodo;
+ rsstodo = thisone;
+ }
+ newroom = malloc(sizeof(struct rssroom));
+ newroom->room = strdup(roomname);
+ newroom->next = thisone->rooms;
+ thisone->rooms = newroom;
+}
+
+
+// pull one feed (possibly multiple rooms)
+//
+void rss_pull_one_feed(struct rssurl *url)
+{
CURL *curl;
CURLcode res;
- char errmsg[1024] = "";
+ StrBuf *Downloaded = NULL;
- rssc.Item = &ri;
- rssc.Cfg = Cfg;
-
- CtdlLogPrintf(CTDL_DEBUG, "Fetching RSS feed <%s>\n", Cfg->url);
+ syslog(LOG_DEBUG, "rssclient: fetching %s", url->url);
curl = curl_easy_init();
if (!curl) {
- CtdlLogPrintf(CTDL_ALERT, "Unable to initialize libcurl.\n");
return;
}
- xp = XML_ParserCreateNS("UTF-8", ':');
- if (!xp) {
- CtdlLogPrintf(CTDL_ALERT, "Cannot create XML parser!\n");
- curl_easy_cleanup(curl);
- return;
- }
+ Downloaded = NewStrBuf();
- curl_easy_setopt(curl, CURLOPT_URL, Cfg->url);
- curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, 0);
- curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, 0);
- curl_easy_setopt(curl, CURLOPT_WRITEDATA, xp);
- curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, rss_libcurl_callback);
- curl_easy_setopt(curl, CURLOPT_ERRORBUFFER, errmsg);
- curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1);
-#ifdef CURLOPT_HTTP_CONTENT_DECODING
- curl_easy_setopt(curl, CURLOPT_HTTP_CONTENT_DECODING, 1);
- curl_easy_setopt(curl, CURLOPT_ENCODING, "");
-#endif
- curl_easy_setopt(curl, CURLOPT_USERAGENT, CITADEL);
- curl_easy_setopt(curl, CURLOPT_TIMEOUT, 180); /* die after 180 seconds */
- if (!IsEmptyStr(config.c_ip_addr)) {
- curl_easy_setopt(curl, CURLOPT_INTERFACE, config.c_ip_addr);
+ curl_easy_setopt(curl, CURLOPT_URL, url->url);
+ curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, 0L);
+ curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, 0L);
+ curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1L); // Follow redirects
+ curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, CurlFillStrBuf_callback); // What to do with downloaded data
+ curl_easy_setopt(curl, CURLOPT_WRITEDATA, Downloaded); // Give it our StrBuf to work with
+ curl_easy_setopt(curl, CURLOPT_TIMEOUT, 20L); // Time out after 20 seconds
+ res = curl_easy_perform(curl); // Perform the request
+ if (res != CURLE_OK) {
+ syslog(LOG_WARNING, "rssclient: failed to load feed: %s", curl_easy_strerror(res));
}
-
- memset(&ri, 0, sizeof(rss_item));
- ri.roomlist = Cfg->rooms;
-#ifdef HAVE_ICONV
-#if 0
- XML_SetUnknownEncodingHandler(xp,
- handle_unknown_xml_encoding,
- NULL);
-#endif
-#endif
- XML_SetElementHandler(xp, rss_xml_start, rss_xml_end);
- XML_SetCharacterDataHandler(xp, rss_xml_chardata);
- XML_SetUserData(xp, &rssc);
- if (CtdlThreadCheckStop())
- {
- XML_ParserFree(xp);
- curl_easy_cleanup(curl);
- return;
- }
-
- if (CtdlThreadCheckStop())
- goto shutdown ;
-
- res = curl_easy_perform(curl);
- if (res) {
- CtdlLogPrintf(CTDL_ALERT, "libcurl error %d: %s\n", res, errmsg);
- }
-
- if (CtdlThreadCheckStop())
- goto shutdown ;
-
- if (ri.done_parsing == 0)
- XML_Parse(xp, "", 0, 1);
-
-
- CtdlLogPrintf(CTDL_ALERT, "RSS: XML Status [%s] \n",
- XML_ErrorString(
- XML_GetErrorCode(xp)));
-
-shutdown:
curl_easy_cleanup(curl);
- XML_ParserFree(xp);
- flush_rss_ite(&ri);
+ rss_parse_feed(Downloaded, url->rooms); // parse the feed
+ FreeStrBuf(&Downloaded); // free the downloaded feed data
}
-/*
- * Scan a room's netconfig to determine whether it is requesting any RSS feeds
- */
-void rssclient_scan_room(struct ctdlroom *qrbuf, void *data)
+// We have a list, now download the feeds
+//
+void rss_pull_feeds(void)
{
- char filename[PATH_MAX];
- char buf[1024];
- char instr[32];
- FILE *fp;
- char feedurl[256];
- rssnetcfg *rncptr = NULL;
- rssnetcfg *use_this_rncptr = NULL;
- int len = 0;
- char *ptr = NULL;
-
- assoc_file_name(filename, sizeof filename, qrbuf, ctdl_netcfg_dir);
-
- if (CtdlThreadCheckStop())
- return;
-
- /* Only do net processing for rooms that have netconfigs */
- fp = fopen(filename, "r");
- if (fp == NULL) {
- return;
+ struct rssurl *r;
+ struct rssroom *rr;
+
+ while (rsstodo != NULL) {
+ rss_pull_one_feed(rsstodo);
+ r = rsstodo;
+ rsstodo = rsstodo->next;
+ while (r->rooms != NULL) {
+ rr = r->rooms;
+ r->rooms = r->rooms->next;
+ free(rr->room);
+ free(rr);
+ }
+ free(r->url);
+ free(r);
}
+}
- while (fgets(buf, sizeof buf, fp) != NULL && !CtdlThreadCheckStop()) {
- buf[strlen(buf)-1] = 0;
-
- extract_token(instr, buf, 0, '|', sizeof instr);
- if (!strcasecmp(instr, "rssclient")) {
-
- use_this_rncptr = NULL;
-
- extract_token(feedurl, buf, 1, '|', sizeof feedurl);
- /* If any other rooms have requested the same feed, then we will just add this
- * room to the target list for that client request.
- */
- for (rncptr=rnclist; rncptr!=NULL; rncptr=rncptr->next) {
- if (!strcmp(rncptr->url, feedurl)) {
- use_this_rncptr = rncptr;
- }
- }
+// Scan a room's netconfig looking for RSS feed parsing requests
+//
+void rssclient_scan_room(struct ctdlroom *qrbuf, void *data)
+{
+ char *serialized_config = NULL;
+ int num_configs = 0;
+ char cfgline[SIZ];
+ int i = 0;
- /* Otherwise create a new client request */
- if (use_this_rncptr == NULL) {
- rncptr = (rssnetcfg *) malloc(sizeof(rssnetcfg));
- rncptr->ItemType = RSS_UNSET;
- if (rncptr != NULL) {
- rncptr->next = rnclist;
- safestrncpy(rncptr->url, feedurl, sizeof rncptr->url);
- rncptr->rooms = NULL;
- rnclist = rncptr;
- use_this_rncptr = rncptr;
- }
- }
+ serialized_config = LoadRoomNetConfigFile(qrbuf->QRnumber);
+ if (!serialized_config) {
+ return;
+ }
- /* Add the room name to the request */
- if (use_this_rncptr != NULL) {
- if (use_this_rncptr->rooms == NULL) {
- rncptr->rooms = strdup(qrbuf->QRname);
- }
- else {
- len = strlen(use_this_rncptr->rooms) + strlen(qrbuf->QRname) + 5;
- ptr = realloc(use_this_rncptr->rooms, len);
- if (ptr != NULL) {
- strcat(ptr, "|");
- strcat(ptr, qrbuf->QRname);
- use_this_rncptr->rooms = ptr;
- }
- }
+ num_configs = num_tokens(serialized_config, '\n');
+ for (i=0; i<num_configs; ++i) {
+ extract_token(cfgline, serialized_config, i, '\n', sizeof cfgline);
+ if (!strncasecmp(cfgline, HKEY("rssclient|"))) {
+ strcpy(cfgline, &cfgline[10]);
+ char *vbar = strchr(cfgline, '|');
+ if (vbar != NULL) {
+ *vbar = 0;
}
+ rssclient_push_todo(cfgline, qrbuf->QRname);
}
-
}
- fclose(fp);
-
+ free(serialized_config);
}
+
/*
* Scan for rooms that have RSS client requests configured
*/
-void *rssclient_scan(void *args) {
- static time_t last_run = 0L;
- static int doing_rssclient = 0;
- rssnetcfg *rptr = NULL;
- CitContext rssclientCC;
-
- /* Give this thread its own private CitContext */
- CtdlFillSystemContext(&rssclientCC, "rssclient");
- citthread_setspecific(MyConKey, (void *)&rssclientCC );
-
- CtdlThreadAllocTSD();
-
- /*
- * This is a simple concurrency check to make sure only one rssclient run
- * is done at a time. We could do this with a mutex, but since we
- * don't really require extremely fine granularity here, we'll do it
- * with a static variable instead.
- */
- if (doing_rssclient) return NULL;
- doing_rssclient = 1;
-
- CtdlLogPrintf(CTDL_DEBUG, "rssclient started\n");
- CtdlForEachRoom(rssclient_scan_room, NULL);
-
- while (rnclist != NULL && !CtdlThreadCheckStop()) {
- rss_do_fetching(rnclist);
- rptr = rnclist;
- rnclist = rnclist->next;
- if (rptr->rooms != NULL) free(rptr->rooms);
- free(rptr);
+void rssclient_scan(void) {
+ time_t now = time(NULL);
+
+ /* Run no more than once every 15 minutes. */
+ if ((now - last_run) < 900) {
+ syslog(LOG_DEBUG,
+ "rssclient: polling interval not yet reached; last run was %ldm%lds ago",
+ ((now - last_run) / 60),
+ ((now - last_run) % 60)
+ );
+ return;
}
- CtdlLogPrintf(CTDL_DEBUG, "rssclient ended\n");
+ syslog(LOG_DEBUG, "rssclient: started");
+ CtdlForEachRoom(rssclient_scan_room, NULL);
+ rss_pull_feeds();
+ syslog(LOG_DEBUG, "rssclient: ended");
last_run = time(NULL);
- doing_rssclient = 0;
- if (!CtdlThreadCheckStop())
- CtdlThreadSchedule ("RSS Client", CTDLTHREAD_BIGSTACK, rssclient_scan, NULL, last_run + config.c_net_freq);
- else
- CtdlLogPrintf(CTDL_DEBUG, "rssclient: Task STOPPED.\n");
- CtdlClearSystemContext();
- return NULL;
+ return;
}
CTDL_MODULE_INIT(rssclient)
{
- if (threading)
+ if (!threading)
{
- CtdlLogPrintf(CTDL_INFO, "%s\n", curl_version());
- CtdlThreadSchedule ("RSS Client", CTDLTHREAD_BIGSTACK, rssclient_scan, NULL, 0);
+ syslog(LOG_INFO, "rssclient: using %s", curl_version());
+ CtdlRegisterSessionHook(rssclient_scan, EVT_TIMER, PRIO_AGGR + 300);
}
- /* return our Subversion id for the Log */
- return "$Id$";
+ return "rssclient";
}
+
projects / citadel.git / blobdiff