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 bl&euml;rg</title>\n"
  22                 "<link>%s</link>\n"
  23                 "<description>%s</description>\n",
  24                 "bl&euml;rg",
  25                 "http://blerg.dominionfawesome.com/",
  26                 "Textual vomit"
  27         );
  28
  29         while (i < record_count) {
  30                 blerg_fetch(b, i, &data, &len);
  31                 tmp = xml_escape_data(data, len);
  32                 fprintf(f,
  33                         "<item>\n"
  34                         "<description>%s</description>\n"
  35                         "</item>\n",
  36                         tmp
  37                 );
  38                 free(tmp);
  39                 free(data);
  40                 i++;
  41         }
  42         blerg_close(b);
  43
  44         fprintf(f,
  45                 "</channel>\n"
  46                 "</rss>\n"
  47         );
  48 }
  49
  50 int main (int argc, char *argv) {
  51         char *path;
  52         char *request_method;
  53         int ret;
  54         struct url_info info;
  55
  56         request_method = getenv("REQUEST_METHOD");
  57         if (request_method == NULL) {
  58                 fprintf(stderr, "Request method is null!?\n");
  59                 exit(0);
  60         }
  61
  62         if (strncmp(request_method, "GET", 4) != 0) {
  63                 respond_405();
  64                 exit(0);
  65         }
  66
  67         path = getenv("PATH_INFO");
  68         if (path == NULL) {
  69                 respond_404();
  70                 exit(0);
  71         }
  72
  73         if (path[0] != '/') {
  74                 respond_404();
  75                 exit(0);
  76         }
  77
  78         ret = parse_url_info(path + 1, &info);
  79         if ((ret & URL_INFO_AUTHOR) == 0) {
  80                 respond_404();
  81                 exit(0);
  82         }
  83
  84         if (!blerg_exists(info.author)) {
  85                 respond_404();
  86                 exit(0);
  87         }
  88
  89         printf("Content-type: application/rss+xml\r\n\r\n");
  90
  91         fprint_rss(stdout, "chip");
  92
  93 }