+
/*
- * RSS/Atom feed generator
+ * RSS feed generator (could be adapted in the future to feed both RSS and Atom)
*
- * Copyright (c) 2005-2010 by the citadel.org team
+ * Copyright (c) 2010-2012 by the citadel.org team
*
- * 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 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 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
*/
#include "webcit.h"
#include "webserver.h"
+/*
+ * RSS feed generator -- do one message
+ */
+void feed_rss_one_message(long msgnum) {
+ int in_body = 0;
+ int in_messagetext = 0;
+ int found_title = 0;
+ int found_guid = 0;
+ char pubdate[128];
+ StrBuf *messagetext = NULL;
+ int is_top_level_post = 1;
+ const char *BufPtr = NULL;
+ StrBuf *Line = NewStrBufPlain(NULL, 1024);
+ char buf[1024];
+ int permalink_hash = 0;
+
+ /* Phase 1: read the message into memory */
+ serv_printf("MSG4 %ld", msgnum);
+ serv_getln(buf, sizeof buf);
+ if (buf[0] != '1')
+ return;
+ StrBuf *ServerResponse = NewStrBuf();
+ while (serv_getln(buf, sizeof buf), strcmp(buf, "000")) {
+ StrBufAppendPrintf(ServerResponse, "%s\n", buf);
+ }
+
+ /* Phase 2: help SkyNet become self-aware */
+ BufPtr = NULL;
+ while (StrBufSipLine(Line, ServerResponse, &BufPtr), ((BufPtr != StrBufNOTNULL) && (BufPtr != NULL))) {
+ if (in_body) {
+ /* do nothing */
+ }
+ else if (StrLength(Line) == 0) {
+ ++in_body;
+ }
+ else if ((StrLength(Line) > 5) && (!strncasecmp(ChrPtr(Line), "wefw=", 5))) {
+ is_top_level_post = 0; /* presence of references means it's a reply/comment */
+ }
+ else if ((StrLength(Line) > 5) && (!strncasecmp(ChrPtr(Line), "msgn=", 5))) {
+ StrBufCutLeft(Line, 5);
+ permalink_hash = ThreadIdHash(Line);
+ }
+ }
+
+ /*
+ * Phase 3: output the message in RSS <item> form
+ * (suppress replies [comments] if this is a blog room)
+ */
+ if ((WC->CurRoom.view != VIEW_BLOG) || (is_top_level_post == 1)) {
+ wc_printf("<item>");
+ wc_printf("<link>%s/readfwd?go=", ChrPtr(site_prefix));
+ urlescputs(ChrPtr(WC->CurRoom.name));
+ if ((WC->CurRoom.view == VIEW_BLOG) && (permalink_hash != 0)) {
+ wc_printf("?p=%d", permalink_hash);
+ }
+ else {
+ wc_printf("?start_reading_at=%ld", msgnum);
+ }
+ wc_printf("</link>");
+
+ BufPtr = NULL;
+ in_body = 0;
+ in_messagetext = 0;
+ while (StrBufSipLine(Line, ServerResponse, &BufPtr), ((BufPtr != StrBufNOTNULL) && (BufPtr != NULL))) {
+ safestrncpy(buf, ChrPtr(Line), sizeof buf);
+
+ /* XML parsers can be picky; strip out nonprintable header characters */
+ if ((strlen(buf) >= 6) && (buf[4] == '=')) {
+ char *p = &buf[5];
+ while (*p) {
+ if (!isprint(*p)) {
+ *p = 0;
+ }
+ ++p;
+ }
+ }
+
+ /* Now output fields */
+ if (in_body) {
+ if (in_messagetext) {
+ StrBufAppendBufPlain(messagetext, buf, -1, 0);
+ StrBufAppendBufPlain(messagetext, HKEY("\r\n"), 0);
+ }
+ else if (IsEmptyStr(buf)) {
+ in_messagetext = 1;
+ }
+ }
+ else if (!strncasecmp(buf, "subj=", 5)) {
+ wc_printf("<title>");
+ escputs(&buf[5]);
+ wc_printf("</title>");
+ ++found_title;
+ }
+ else if (!strncasecmp(buf, "exti=", 5)) {
+ wc_printf("<guid isPermaLink=\"false\">");
+ escputs(&buf[5]);
+ wc_printf("</guid>");
+ ++found_guid;
+ }
+ else if (!strncasecmp(buf, "time=", 5)) {
+ http_datestring(pubdate, sizeof pubdate, atol(&buf[5]));
+ wc_printf("<pubDate>%s</pubDate>", pubdate);
+ }
+ else if (!strncasecmp(buf, "text", 4)) {
+ if (!found_title) {
+ wc_printf("<title>Message #%ld</title>", msgnum);
+ }
+ if (!found_guid) {
+ wc_printf("<guid isPermaLink=\"false\">%ld@%s</guid>",
+ msgnum, ChrPtr(WC->serv_info->serv_humannode)
+ );
+ }
+ wc_printf("<description>");
+ in_body = 1;
+ messagetext = NewStrBuf();
+ }
+ }
+
+ if (in_body) {
+ cdataout((char *) ChrPtr(messagetext));
+ FreeStrBuf(&messagetext);
+ wc_printf("</description>");
+ }
+
+ wc_printf("</item>");
+ }
+
+ FreeStrBuf(&Line);
+ FreeStrBuf(&ServerResponse);
+ return;
+}
+
+
+/*
+ * RSS feed generator -- go through the message list
+ */
+void feed_rss_do_messages(void) {
+ wcsession *WCC = WC;
+ int num_msgs = 0;
+ int i;
+ SharedMessageStatus Stat;
+ message_summary *Msg = NULL;
+
+ memset(&Stat, 0, sizeof Stat);
+ Stat.maxload = INT_MAX;
+ Stat.lowest_found = (-1);
+ Stat.highest_found = (-1);
+ num_msgs = load_msg_ptrs("MSGS ALL", NULL, NULL, &Stat, NULL, NULL, NULL, NULL, 0);
+ if (num_msgs < 1)
+ return;
+
+ i = num_msgs; /* convention is to feed newest-to-oldest */
+ while (i > 0) {
+ Msg = GetMessagePtrAt(i - 1, WCC->summ);
+ if (Msg != NULL) {
+ feed_rss_one_message(Msg->msgnum);
+ }
+ --i;
+ }
+}
+
+
+/*
+ * Output the room info file of the current room as a <description> for the channel
+ */
+void feed_rss_do_room_info_as_description(void) {
+ wc_printf("<description>");
+ escputs(ChrPtr(WC->CurRoom.name)); /* FIXME use the output of RINF instead */
+ wc_printf("</description>\r\n");
+}
/*
- * Main entry point for GroupDAV requests
+ * Entry point for RSS feed generator
*/
void feed_rss(void) {
+ char buf[1024];
- output_headers(0, 0, 0, 1, 1, 0);
- hprintf("Content-type: text/xml\r\n");
- hprintf(
- "Server: %s / %s\r\n"
- "Connection: close\r\n"
- ,
- PACKAGE_STRING, ChrPtr(WC->serv_info->serv_software)
- );
+ output_headers(0, 0, 0, 0, 1, 0);
+ hprintf("Content-type: text/xml; charset=utf-8\r\n");
+ hprintf("Server: %s / %s\r\n" "Connection: close\r\n", PACKAGE_STRING, ChrPtr(WC->serv_info->serv_software)
+ );
begin_burst();
- wc_printf("<?xml version=\"1.0\"?>"
- "<rss version=\"2.0\" xmlns:atom=\"http://www.w3.org/2005/Atom\">"
- "<channel>"
- );
+ wc_printf("<?xml version=\"1.0\"?>" "<rss version=\"2.0\">" "<channel>");
wc_printf("<title>");
escputs(ChrPtr(WC->CurRoom.name));
wc_printf("</title>");
wc_printf("<link>");
- urlescputs(ChrPtr(site_prefix));
- wc_printf("</link>");
-
- // <language>en-us</language>
- // <description>Linux Today News Service</description>
- // <atom:link href="http://linuxtoday.com/biglt.rss" rel="self" type="application/rss+xml" />
-
- // <image>
- // <title>Linux Today</title>
- // <url>http://linuxtoday.com/pics/ltnet.png</url>
- // <link>http://linuxtoday.com</link>
- // </image>
-
-#if 0
- <item>
- <title>lorem ipsum dolor sit amet</title>
- <pubDate>Wed, 08 Sep 2010 20:03:21 GMT</pubDate>
- <link>http://xxxxx.xxxx.xxxxxx.xxxx.xxx</link>
- <description><b>foo bar baz:</b> lorem ipsum dolor sit amet, foo bar eek</description>
- <guid>xxxx-xxxx-xxxx-xxxx-xxxx-xxxx</guid>
- </item>
-#endif
-
- wc_printf("</channel>"
- "</rss>"
- "\r\n\r\n"
- );
+ escputs(ChrPtr(site_prefix));
+ wc_printf("/</link>");
+
+ serv_puts("RINF");
+ serv_getln(buf, sizeof buf);
+ if (buf[0] == '1') {
+ wc_printf("<description>\r\n");
+ while (serv_getln(buf, sizeof buf), strcmp(buf, "000")) {
+ escputs(buf);
+ wc_printf("\r\n");
+ }
+ wc_printf("</description>");
+ }
+
+ wc_printf("<image><title>");
+ escputs(ChrPtr(WC->CurRoom.name));
+ wc_printf("</title><url>");
+ escputs(ChrPtr(site_prefix));
+ wc_printf("/roompic?room=");
+ urlescputs(ChrPtr(WC->CurRoom.name));
+ wc_printf("</url><link>");
+ escputs(ChrPtr(site_prefix));
+ wc_printf("/</link></image>\r\n");
+
+ feed_rss_do_room_info_as_description();
+ feed_rss_do_messages();
+
+ wc_printf("</channel>" "</rss>" "\r\n\r\n");
wDumpContent(0);
- end_webcit_session();
}
-void
-InitModule_RSS
-(void)
-{
- WebcitAddUrlHandler(HKEY("feed_rss"), "", 0, feed_rss, ANONYMOUS|COOKIEUNNEEDED|FORCE_SESSIONCLOSE);
+/*
+ * Offer the RSS feed meta tag for this room
+ */
+void tmplput_rssmeta(StrBuf * Target, WCTemplputParams * TP) {
+ wcsession *WCC = WC;
+ char feed_link[1024];
+
+ strcpy(feed_link, "/feed_rss?go=");
+ urlesc(&feed_link[20], sizeof(feed_link) - 20, (char *) ChrPtr(WCC->CurRoom.name));
+ StrBufAppendPrintf(Target, "<link rel=\"alternate\" title=\"RSS\" href=\"%s\" type=\"application/rss+xml\">", feed_link);
+}
+
+
+/*
+ * Offer the RSS feed button for this room
+ */
+void tmplput_rssbutton(StrBuf * Target, WCTemplputParams * TP) {
+ StrBuf *FeedLink = NULL;
+
+ FeedLink = NewStrBufPlain(HKEY("/feed_rss?go="));
+ StrBufUrlescAppend(FeedLink, WC->CurRoom.name, NULL);
+
+ StrBufAppendPrintf(Target, "<a type=\"application/rss+xml\" href=\"");
+ StrBufAppendBuf(Target, FeedLink, 0);
+ StrBufAppendPrintf(Target, "\"><img src=\"static/webcit_icons/essen/16x16/rss.png\" alt=\"RSS\">");
+ StrBufAppendPrintf(Target, "</a>");
+ FreeStrBuf(&FeedLink);
+}
+
+
+void InitModule_RSS(void) {
+ WebcitAddUrlHandler(HKEY("feed_rss"), "", 0, feed_rss, ANONYMOUS | COOKIEUNNEEDED);
+ RegisterNamespace("THISROOM:FEED:RSS", 0, 0, tmplput_rssbutton, NULL, CTX_NONE);
+ RegisterNamespace("THISROOM:FEED:RSSMETA", 0, 0, tmplput_rssmeta, NULL, CTX_NONE);
}
projects / citadel.git / blobdiff