cgi/rss.c

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