1/* Feel free to use this example code in any way
2   you see fit (Public Domain) */
3
4#include <sys/types.h>
5#ifndef _WIN32
6#include <sys/select.h>
7#include <sys/socket.h>
8#else
9#include <winsock2.h>
10#endif
11#include <microhttpd.h>
12#include <time.h>
13#include <sys/stat.h>
14#include <fcntl.h>
15#include <string.h>
16#include <stdio.h>
17
18#define PORT 8888
19#define FILENAME "picture.png"
20#define MIMETYPE "image/png"
21
22static int
23answer_to_connection (void *cls, struct MHD_Connection *connection,
24                      const char *url, const char *method,
25                      const char *version, const char *upload_data,
26                      size_t *upload_data_size, void **con_cls)
27{
28  struct MHD_Response *response;
29  int fd;
30  int ret;
31  struct stat sbuf;
32
33  if (0 != strcmp (method, "GET"))
34    return MHD_NO;
35
36  if ( (-1 == (fd = open (FILENAME, O_RDONLY))) ||
37       (0 != fstat (fd, &sbuf)) )
38    {
39      /* error accessing file */
40      if (fd != -1)
41	(void) close (fd);
42      const char *errorstr =
43        "<html><body>An internal server error has occured!\
44                              </body></html>";
45      response =
46	MHD_create_response_from_buffer (strlen (errorstr),
47					 (void *) errorstr,
48					 MHD_RESPMEM_PERSISTENT);
49      if (NULL != response)
50        {
51          ret =
52            MHD_queue_response (connection, MHD_HTTP_INTERNAL_SERVER_ERROR,
53                                response);
54          MHD_destroy_response (response);
55
56          return ret;
57        }
58      else
59        return MHD_NO;
60    }
61  response =
62    MHD_create_response_from_fd_at_offset (sbuf.st_size, fd, 0);
63  MHD_add_response_header (response, "Content-Type", MIMETYPE);
64  ret = MHD_queue_response (connection, MHD_HTTP_OK, response);
65  MHD_destroy_response (response);
66
67  return ret;
68}
69
70
71int
72main ()
73{
74  struct MHD_Daemon *daemon;
75
76  daemon = MHD_start_daemon (MHD_USE_SELECT_INTERNALLY, PORT, NULL, NULL,
77                             &answer_to_connection, NULL, MHD_OPTION_END);
78  if (NULL == daemon)
79    return 1;
80
81  (void) getchar ();
82
83  MHD_stop_daemon (daemon);
84
85  return 0;
86}
87