2 * RSS feed generator (could be adapted in the future to feed both RSS and Atom)
4 * Copyright (c) 2010-2011 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) {
33 StrBuf *messagetext = NULL;
35 /* FIXME if this is a blog room we only want to include top-level messages */
37 serv_printf("MSG0 %ld", msgnum); /* FIXME we want msg4 eventually */
38 serv_getln(buf, sizeof buf);
39 if (buf[0] != '1') return;
42 wc_printf("<link>%s/readfwd?go=", ChrPtr(site_prefix));
43 urlescputs(ChrPtr(WC->CurRoom.name));
44 wc_printf("?start_reading_at=%ld</link>", msgnum);
46 while (serv_getln(buf, sizeof buf), strcmp(buf, "000")) {
48 StrBufAppendBufPlain(messagetext, buf, -1, 0);
49 StrBufAppendBufPlain(messagetext, HKEY("\r\n"), 0);
51 else if (!strncasecmp(buf, "subj=", 5)) {
54 wc_printf("</title>");
57 else if (!strncasecmp(buf, "exti=", 5)) {
62 else if (!strncasecmp(buf, "time=", 5)) {
63 http_datestring(pubdate, sizeof pubdate, atol(&buf[5]));
64 wc_printf("<pubDate>%s</pubDate>", pubdate);
66 else if (!strncasecmp(buf, "text", 4)) {
68 wc_printf("<title>Message #%ld</title>", msgnum);
70 wc_printf("<description>");
72 messagetext = NewStrBuf();
77 cdataout((char*)ChrPtr(messagetext));
78 FreeStrBuf(&messagetext);
79 wc_printf("</description>");
86 * RSS feed generator -- go through the message list
88 void feed_rss_do_messages(void) {
92 SharedMessageStatus Stat;
93 message_summary *Msg = NULL;
95 memset(&Stat, 0, sizeof Stat);
96 Stat.maxload = INT_MAX;
97 Stat.lowest_found = (-1);
98 Stat.highest_found = (-1);
99 num_msgs = load_msg_ptrs("MSGS ALL", &Stat, NULL);
100 if (num_msgs < 1) return;
102 i = num_msgs; /* convention is to feed newest-to-oldest */
104 Msg = GetMessagePtrAt(i-1, WCC->summ);
106 feed_rss_one_message(Msg->msgnum);
114 * Entry point for RSS feed generator
116 void feed_rss(void) {
119 output_headers(0, 0, 0, 0, 1, 0);
120 hprintf("Content-type: text/xml\r\n");
122 "Server: %s / %s\r\n"
123 "Connection: close\r\n"
125 PACKAGE_STRING, ChrPtr(WC->serv_info->serv_software)
129 wc_printf("<?xml version=\"1.0\"?>"
130 "<rss version=\"2.0\" xmlns:atom=\"http://www.w3.org/2005/Atom\">"
134 wc_printf("<title>");
135 escputs(ChrPtr(WC->CurRoom.name));
136 wc_printf("</title>");
139 urlescputs(ChrPtr(site_prefix));
140 wc_printf("</link>");
143 serv_getln(buf, sizeof buf);
145 wc_printf("<description>\r\n");
146 while (serv_getln(buf, sizeof buf), strcmp(buf, "000")) {
150 wc_printf("</description>");
153 wc_printf("<image><title>");
154 escputs(ChrPtr(WC->CurRoom.name));
155 wc_printf("</title><url>");
156 urlescputs(ChrPtr(site_prefix));
157 wc_printf("/image?name=_roompic_?go=");
158 urlescputs(ChrPtr(WC->CurRoom.name));
159 wc_printf("</url><link>");
160 urlescputs(ChrPtr(site_prefix));
161 wc_printf("</link></image>\r\n");
163 feed_rss_do_messages();
165 wc_printf("</channel>"
175 * Offer the RSS feed meta tag for this room
177 void tmplput_rssmeta(StrBuf *Target, WCTemplputParams *TP)
180 char feed_link[1024];
181 char encoded_link[1024];
183 strcpy(feed_link, "/feed_rss?go=");
184 urlesc(&feed_link[20], sizeof(feed_link) - 20, (char *)ChrPtr(WCC->CurRoom.name) );
185 CtdlEncodeBase64(encoded_link, feed_link, strlen(feed_link), 0);
187 StrBufAppendPrintf(Target,
188 "<link rel=\"alternate\" title=\"RSS\" href=\"/B64%s\" type=\"application/rss+xml\">",
195 * Offer the RSS feed button for this room
197 void tmplput_rssbutton(StrBuf *Target, WCTemplputParams *TP)
200 char feed_link[1024];
201 char encoded_link[1024];
203 strcpy(feed_link, "/feed_rss?go=");
204 urlesc(&feed_link[20], sizeof(feed_link) - 20, (char *)ChrPtr(WCC->CurRoom.name) );
205 CtdlEncodeBase64(encoded_link, feed_link, strlen(feed_link), 0);
207 StrBufAppendPrintf(Target, "<a type=\"application/rss+xml\" href=\"/B64%s\">", encoded_link);
208 StrBufAppendPrintf(Target, "<img border=\"0\" src=\"static/rss_16x.png\" alt=\"RSS\">");
209 StrBufAppendPrintf(Target, "</a>");
217 WebcitAddUrlHandler(HKEY("feed_rss"), "", 0, feed_rss, ANONYMOUS|COOKIEUNNEEDED);
218 RegisterNamespace("THISROOM:FEED:RSS", 0, 0, tmplput_rssbutton, NULL, CTX_NONE);
219 RegisterNamespace("THISROOM:FEED:RSSMETA", 0, 0, tmplput_rssmeta, NULL, CTX_NONE);