2 * RSS feed generator (could be adapted in the future to feed both RSS and Atom)
4 * Copyright (c) 2010 by the citadel.org team
6 * This program is open source software. You can redistribute it and/or
7 * modify it under the terms of the GNU General Public License as
8 * published by the Free Software Foundation; either version 3 of the
9 * License, or (at your option) any later version.
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.
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
22 #include "webserver.h"
26 * RSS feed generator -- do one message
28 void feed_rss_one_message(long msgnum) {
34 /* FIXME if this is a blog room we only want to include top-level messages */
36 serv_printf("MSG0 %ld", msgnum); /* FIXME we want msg4 eventually */
37 serv_getln(buf, sizeof buf);
38 if (buf[0] != '1') return;
41 wc_printf("<link>%s/readfwd?go=", ChrPtr(site_prefix));
42 urlescputs(ChrPtr(WC->CurRoom.name));
43 wc_printf("?start_reading_at=%ld</link>", msgnum);
45 while (serv_getln(buf, sizeof buf), strcmp(buf, "000")) {
50 else if (!strncasecmp(buf, "subj=", 5)) {
53 wc_printf("</title>");
56 else if (!strncasecmp(buf, "exti=", 5)) {
61 else if (!strncasecmp(buf, "time=", 5)) {
62 http_datestring(pubdate, sizeof pubdate, atol(&buf[5]));
63 wc_printf("<pubDate>%s</pubDate>", pubdate);
65 else if (!strncasecmp(buf, "text", 4)) {
67 wc_printf("<title>Message #%ld</title>", msgnum);
69 wc_printf("<description>");
75 wc_printf("</description>");
82 * RSS feed generator -- go through the message list
84 void feed_rss_do_messages(void) {
88 SharedMessageStatus Stat;
89 message_summary *Msg = NULL;
91 memset(&Stat, 0, sizeof Stat);
92 Stat.maxload = INT_MAX;
93 Stat.lowest_found = (-1);
94 Stat.highest_found = (-1);
95 num_msgs = load_msg_ptrs("MSGS ALL", &Stat, NULL);
96 if (num_msgs < 1) return;
98 i = num_msgs; /* convention is to feed newest-to-oldest */
100 Msg = GetMessagePtrAt(i-1, WCC->summ);
102 feed_rss_one_message(Msg->msgnum);
110 * Entry point for RSS feed generator
112 void feed_rss(void) {
115 output_headers(0, 0, 0, 0, 1, 0);
116 hprintf("Content-type: text/xml\r\n");
118 "Server: %s / %s\r\n"
119 "Connection: close\r\n"
121 PACKAGE_STRING, ChrPtr(WC->serv_info->serv_software)
125 wc_printf("<?xml version=\"1.0\"?>"
126 "<rss version=\"2.0\" xmlns:atom=\"http://www.w3.org/2005/Atom\">"
130 wc_printf("<title>");
131 escputs(ChrPtr(WC->CurRoom.name));
132 wc_printf("</title>");
135 urlescputs(ChrPtr(site_prefix));
136 wc_printf("</link>");
139 serv_getln(buf, sizeof buf);
141 wc_printf("<description>\r\n");
142 while (serv_getln(buf, sizeof buf), strcmp(buf, "000")) {
146 wc_printf("</description>");
149 wc_printf("<image><title>");
150 escputs(ChrPtr(WC->CurRoom.name));
151 wc_printf("</title><url>");
152 urlescputs(ChrPtr(site_prefix));
153 wc_printf("/image?name=_roompic_?go=");
154 urlescputs(ChrPtr(WC->CurRoom.name));
155 wc_printf("</url><link>");
156 urlescputs(ChrPtr(site_prefix));
157 wc_printf("</link></image>\r\n");
159 feed_rss_do_messages();
161 wc_printf("</channel>"
171 * Offer the RSS feed meta tag for this room
173 void tmplput_rssmeta(StrBuf *Target, WCTemplputParams *TP)
176 char feed_link[1024];
177 char encoded_link[1024];
179 strcpy(feed_link, "/feed_rss?go=");
180 urlesc(&feed_link[20], sizeof(feed_link) - 20, (char *)ChrPtr(WCC->CurRoom.name) );
181 CtdlEncodeBase64(encoded_link, feed_link, strlen(feed_link), 0);
183 StrBufAppendPrintf(Target,
184 "<link rel=\"alternate\" title=\"RSS\" href=\"/B64%s\" type=\"application/rss+xml\">",
191 * Offer the RSS feed button for this room
193 void tmplput_rssbutton(StrBuf *Target, WCTemplputParams *TP)
196 char feed_link[1024];
197 char encoded_link[1024];
199 strcpy(feed_link, "/feed_rss?go=");
200 urlesc(&feed_link[20], sizeof(feed_link) - 20, (char *)ChrPtr(WCC->CurRoom.name) );
201 CtdlEncodeBase64(encoded_link, feed_link, strlen(feed_link), 0);
203 StrBufAppendPrintf(Target, "<a type=\"application/rss+xml\" href=\"/B64%s\">", encoded_link);
204 StrBufAppendPrintf(Target, "<img border=\"0\" src=\"static/rss_16x.png\" alt=\"RSS\">");
205 StrBufAppendPrintf(Target, "</a>");
213 WebcitAddUrlHandler(HKEY("feed_rss"), "", 0, feed_rss, ANONYMOUS|COOKIEUNNEEDED);
214 RegisterNamespace("THISROOM:FEED:RSS", 0, 0, tmplput_rssbutton, NULL, CTX_NONE);
215 RegisterNamespace("THISROOM:FEED:RSSMETA", 0, 0, tmplput_rssmeta, NULL, CTX_NONE);