/*
- * RSS/Atom feed generator
+ * RSS feed generator (could be adapted in the future to feed both RSS and Atom)
*
- * Copyright (c) 2010 by the citadel.org team
+ * Copyright (c) 2010-2011 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 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
*
* 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
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "webcit.h"
* RSS feed generator -- do one message
*/
void feed_rss_one_message(long msgnum) {
- char buf[1024];
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;
- serv_printf("MSG0 %ld", msgnum); /* FIXME we want msg4 eventually */
+ /* Phase 1: read the message into memory */
+ serv_printf("MSG4 %ld", msgnum);
serv_getln(buf, sizeof buf);
if (buf[0] != '1') return;
-
- wc_printf("<item>");
- wc_printf("<link>%s/readfwd?gotofirst=", ChrPtr(site_prefix));
- urlescputs(ChrPtr(WC->CurRoom.name));
- wc_printf("?start_reading_at=%ld</link>", msgnum);
-
+ 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) {
- escputs(buf);
+ /* do nothing */
}
- else if (!strncasecmp(buf, "subj=", 5)) {
- wc_printf("<title>");
- escputs(&buf[5]);
- wc_printf("</title>");
- ++found_title;
+ else if (StrLength(Line) == 0) {
+ ++in_body;
}
- else if (!strncasecmp(buf, "exti=", 5)) {
- wc_printf("<guid>");
- escputs(&buf[5]);
- wc_printf("</guid>");
+ 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 (!strncasecmp(buf, "time=", 5)) {
- http_datestring(pubdate, sizeof pubdate, atol(&buf[5]));
- wc_printf("<pubDate>%s</pubDate>", pubdate);
+ else if ((StrLength(Line) > 5) && (!strncasecmp(ChrPtr(Line), "msgn=", 5))) {
+ StrBufCutLeft(Line, 5);
+ permalink_hash = ThreadIdHash(Line);
}
- else if (!strncasecmp(buf, "text", 4)) {
- if (!found_title) {
- wc_printf("<title>Message #%ld</title>", msgnum);
+ }
+
+ /*
+ * 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);
+ 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();
}
- wc_printf("<description>");
- in_body = 1;
}
- }
+
+ if (in_body) {
+ cdataout((char*)ChrPtr(messagetext));
+ FreeStrBuf(&messagetext);
+ wc_printf("</description>");
+ }
- if (in_body) {
- wc_printf("</description>");
+ wc_printf("</item>");
}
- wc_printf("</item>");
+ FreeStrBuf(&Line);
+ FreeStrBuf(&ServerResponse);
+ return;
}
/*
* RSS feed generator -- go through the message list
*/
void feed_rss_do_messages(void) {
- char buf[1024];
- long *msgs = NULL;
+ wcsession *WCC = WC;
int num_msgs = 0;
- int num_msgs_alloc = 0;
int i;
+ SharedMessageStatus Stat;
+ message_summary *Msg = NULL;
- serv_puts("MSGP text/html|text/plain"); /* identify our preferred mime types */
- serv_getln(buf, sizeof buf); /* don't care about the result */
-
- serv_puts("MSGS ALL"); /* ask for all messages in the room */
- serv_getln(buf, sizeof buf);
- if (buf[0] != '1') return;
-
- while (serv_getln(buf, sizeof buf), strcmp(buf, "000"))
- {
- if (num_msgs >= num_msgs_alloc) {
- num_msgs_alloc += 1024;
- msgs = realloc(msgs, num_msgs_alloc*sizeof(long) );
- }
- msgs[num_msgs++] = atol(buf);
- }
+ 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, &Stat, NULL);
+ if (num_msgs < 1) return;
i = num_msgs; /* convention is to feed newest-to-oldest */
while (i > 0) {
- feed_rss_one_message(msgs[i-1]);
+ Msg = GetMessagePtrAt(i-1, WCC->summ);
+ if (Msg != NULL) {
+ feed_rss_one_message(Msg->msgnum);
+ }
--i;
}
+}
- free(msgs);
+/*
+ * 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");
}
+
/*
* 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");
+ 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"
begin_burst();
wc_printf("<?xml version=\"1.0\"?>"
- "<rss version=\"2.0\" xmlns:atom=\"http://www.w3.org/2005/Atom\">"
+ "<rss version=\"2.0\">"
"<channel>"
);
wc_printf("</title>");
wc_printf("<link>");
- urlescputs(ChrPtr(site_prefix));
- wc_printf("</link>");
+ escputs(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" />
+ 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>");
+ }
- // <image>
- // <title>Linux Today</title>
- // <url>http://linuxtoday.com/pics/ltnet.png</url>
- // <link>http://linuxtoday.com</link>
- // </image>
+ wc_printf("<image><title>");
+ escputs(ChrPtr(WC->CurRoom.name));
+ wc_printf("</title><url>");
+ escputs(ChrPtr(site_prefix));
+ wc_printf("/image?name=_roompic_?go=");
+ 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>"
);
wDumpContent(0);
- end_webcit_session();
+}
+
+
+/*
+ * Offer the RSS feed meta tag for this room
+ */
+void tmplput_rssmeta(StrBuf *Target, WCTemplputParams *TP)
+{
+ wcsession *WCC = WC;
+ char feed_link[1024];
+ char encoded_link[1024];
+
+ strcpy(feed_link, "/feed_rss?go=");
+ urlesc(&feed_link[20], sizeof(feed_link) - 20, (char *)ChrPtr(WCC->CurRoom.name) );
+ CtdlEncodeBase64(encoded_link, feed_link, strlen(feed_link), 0);
+
+ StrBufAppendPrintf(Target,
+ "<link rel=\"alternate\" title=\"RSS\" href=\"/B64%s\" type=\"application/rss+xml\">",
+ encoded_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);
}
InitModule_RSS
(void)
{
- WebcitAddUrlHandler(HKEY("feed_rss"), "", 0, feed_rss, ANONYMOUS|COOKIEUNNEEDED|FORCE_SESSIONCLOSE);
+ 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