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webcit  8.12-dfsg
Functions
feed_generator.c File Reference
#include "webcit.h"
#include "webserver.h"

Go to the source code of this file.

Functions

void feed_rss_one_message (long msgnum)
void feed_rss_do_messages (void)
void feed_rss_do_room_info_as_description (void)
void feed_rss (void)
void tmplput_rssmeta (StrBuf *Target, WCTemplputParams *TP)
void tmplput_rssbutton (StrBuf *Target, WCTemplputParams *TP)
void InitModule_RSS (void)

Function Documentation

void feed_rss ( void  )

Definition at line 193 of file feed_generator.c.

                    {
       char buf[1024];

       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\">"
              "<channel>"
       );

       wc_printf("<title>");
       escputs(ChrPtr(WC->CurRoom.name));
       wc_printf("</title>");

       wc_printf("<link>");
       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("/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>"
              "</rss>"
              "\r\n\r\n"
       );

       wDumpContent(0);
}

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void feed_rss_do_messages ( void  )

Definition at line 154 of file feed_generator.c.

                                {
       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, &Stat, NULL);
       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;
       }
}

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Definition at line 182 of file feed_generator.c.

{
       wc_printf("<description>");
       escputs(ChrPtr(WC->CurRoom.name)); /* FIXME use the output of RINF instead */
       wc_printf("</description>\r\n");
}

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void feed_rss_one_message ( long  msgnum)

Definition at line 21 of file feed_generator.c.

                                       {
       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;
}

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void InitModule_RSS ( void  )

Definition at line 289 of file feed_generator.c.

{
       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);
}

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void tmplput_rssbutton ( StrBuf *  Target,
WCTemplputParams TP 
)

Definition at line 272 of file feed_generator.c.

{
       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);
}

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void tmplput_rssmeta ( StrBuf *  Target,
WCTemplputParams TP 
)

Definition at line 255 of file feed_generator.c.

{
       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
       );
}

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