cgi/rss.c

   1 #include <stdio.h>
   2 #include <stdlib.h>
   3 #include <cgi-util.h>
   4 #include "database.h"
   5 #include "escapery.h"
   6 #include "canned_responses.h"
   7 #include "app.h"
   8
   9 int fprint_rss(FILE *f, const char *username) {
  10         struct blerg *b = blerg_open(username);
  11         uint64_t record_count = blerg_get_record_count(b);
  12         uint64_t i = (record_count > 50 ? record_count - 50 : 0);
  13         char *data;
  14         char *tmp;
  15         int len;
  16
  17         fprintf(f,
  18                 "<?xml version=\"1.0\" encoding=\"utf8\" ?>\n"
  19                 "<rss version=\"2.0\">\n"
  20                 "<channel>\n"
  21                 "<title>%s's blërg</title>\n"
  22                 "<link>%s#%s</link>\n"
  23                 "<description>%s</description>\n",
  24                 username,
  25                 "http://blerg.dominionfawesome.com/",
  26                 username,
  27                 "Textual vomit"
  28         );
  29
  30         while (i < record_count) {
  31                 blerg_fetch(b, i, &data, &len);
  32                 tmp = xml_escape_data(data, len);
  33                 fprintf(f,
  34                         "<item>\n"
  35                         "<description>%s</description>\n"
  36                         "</item>\n",
  37                         tmp
  38                 );
  39                 free(tmp);
  40                 free(data);
  41                 i++;
  42         }
  43         blerg_close(b);
  44
  45         fprintf(f,
  46                 "</channel>\n"
  47                 "</rss>\n"
  48         );
  49 }
  50
  51 int main (int argc, char *argv) {
  52         char *path;
  53         char *request_method;
  54         int ret;
  55         struct url_info info;
  56
  57         request_method = getenv("REQUEST_METHOD");
  58         if (request_method == NULL) {
  59                 fprintf(stderr, "Request method is null!?\n");
  60                 exit(0);
  61         }
  62
  63         if (strncmp(request_method, "GET", 4) != 0) {
  64                 respond_405();
  65                 exit(0);
  66         }
  67
  68         path = getenv("PATH_INFO");
  69         if (path == NULL) {
  70                 respond_404();
  71                 exit(0);
  72         }
  73
  74         if (path[0] != '/') {
  75                 respond_404();
  76                 exit(0);
  77         }
  78
  79         ret = parse_url_info(path + 1, &info);
  80         if ((ret & URL_INFO_AUTHOR) == 0) {
  81                 respond_404();
  82                 exit(0);
  83         }
  84
  85         if (!blerg_exists(info.author)) {
  86                 respond_404();
  87                 exit(0);
  88         }
  89
  90         printf("Content-type: application/rss+xml\r\n\r\n");
  91
  92         fprint_rss(stdout, "chip");
  93
  94 }