cgi/rss.c

   1 /* Blerg is (C) 2011 The Dominion of Awesome, and is distributed under a
   2  * BSD-style license.  Please see the COPYING file for details.
   3  */
   4 #include <stdio.h>
   5 #include <stdlib.h>
   6 #include <time.h>
   7 #include <cgi-util.h>
   8 #include "database.h"
   9 #include "escapery.h"
  10 #include "canned_responses.h"
  11 #include "app.h"
  12 #include "config.h"
  13
  14 int fprint_rss(FILE *f, const char *username) {
  15         struct blerg *b = blerg_open(username);
  16         uint64_t record_count = blerg_get_record_count(b);
  17         uint64_t i = (record_count > 50 ? record_count - 50 : 0);
  18         char *data;
  19         char *tmp;
  20         time_t post_time;
  21         char date[40];
  22         int len;
  23
  24         fprintf(f,
  25                 "<?xml version=\"1.0\" encoding=\"utf-8\" ?>\n"
  26                 "<rss version=\"2.0\">\n"
  27                 "<channel>\n"
  28                 "<title>%s's blërg</title>\n"
  29                 "<link>%s#%s</link>\n"
  30                 "<description>%s</description>\n",
  31                 username,
  32                 BASEURL,
  33                 username,
  34                 "Textual vomit"
  35         );
  36
  37         while (i < record_count) {
  38                 blerg_fetch(b, i, &data, &len);
  39                 tmp = xml_escape_data(data, len);
  40                 post_time = blerg_get_timestamp(b, i);
  41                 strftime(date, 39, "%a, %d %b %Y %H:%M:%S %Z", gmtime(&post_time));
  42                 fprintf(f,
  43                         "<item>\n"
  44                         "<pubDate>%s</pubDate>\n"
  45                         "<guid>%sget/%s/%llu</guid>\n"
  46                         "<description>%s</description>\n"
  47                         "</item>\n",
  48                         date,
  49                         BASEURL, username, i,
  50                         tmp
  51                 );
  52                 free(tmp);
  53                 free(data);
  54                 i++;
  55         }
  56         blerg_close(b);
  57
  58         fprintf(f,
  59                 "</channel>\n"
  60                 "</rss>\n"
  61         );
  62 }
  63
  64 int main (int argc, char *argv) {
  65         char *path;
  66         char *request_method;
  67         int ret;
  68         struct url_info info;
  69
  70         request_method = getenv("REQUEST_METHOD");
  71         if (request_method == NULL) {
  72                 fprintf(stderr, "Request method is null!?\n");
  73                 exit(0);
  74         }
  75
  76         if (strncmp(request_method, "GET", 4) != 0) {
  77                 respond_405();
  78                 exit(0);
  79         }
  80
  81         path = getenv("PATH_INFO");
  82         if (path == NULL) {
  83                 respond_404();
  84                 exit(0);
  85         }
  86
  87         if (path[0] != '/') {
  88                 respond_404();
  89                 exit(0);
  90         }
  91
  92         ret = parse_url_info(path + 1, &info);
  93         if ((ret & URL_INFO_AUTHOR) == 0) {
  94                 respond_404();
  95                 exit(0);
  96         }
  97
  98         if (!blerg_exists(info.author)) {
  99                 respond_404();
 100                 exit(0);
 101         }
 102
 103         printf("Content-type: application/rss+xml\r\n\r\n");
 104
 105         fprint_rss(stdout, info.author);
 106
 107 }