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/* Feel free to use this example code in any way
you see fit (Public Domain) */
#include <sys/types.h>
#ifndef _WIN32
#include <sys/select.h>
#include <sys/socket.h>
#else
#include <winsock2.h>
#endif
#include <microhttpd.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#define PORT 8888
#define REALM "Maintenance"
#define USER "a legitimate user"
#define PASSWORD "and his password"
#define SERVERKEYFILE "server.key"
#define SERVERCERTFILE "server.pem"
static size_t
get_file_size (const char *filename)
{
FILE *fp;
fp = fopen (filename, "rb");
if (fp)
{
long size;
if ((0 != fseek (fp, 0, SEEK_END)) || (-1 == (size = ftell (fp))))
size = 0;
fclose (fp);
return (size_t) size;
}
else
return 0;
}
static char *
load_file (const char *filename)
{
FILE *fp;
char *buffer;
size_t size;
size = get_file_size (filename);
if (0 == size)
return NULL;
fp = fopen (filename, "rb");
if (! fp)
return NULL;
buffer = malloc (size + 1);
if (! buffer)
{
fclose (fp);
return NULL;
}
buffer[size] = '\0';
if (size != fread (buffer, 1, size, fp))
{
free (buffer);
buffer = NULL;
}
fclose (fp);
return buffer;
}
static enum MHD_Result
ask_for_authentication (struct MHD_Connection *connection, const char *realm)
{
enum MHD_Result ret;
struct MHD_Response *response;
response = MHD_create_response_empty (MHD_RF_NONE);
if (! response)
return MHD_NO;
ret = MHD_queue_basic_auth_required_response3 (connection,
realm,
MHD_YES,
response);
MHD_destroy_response (response);
return ret;
}
static int
is_authenticated (struct MHD_Connection *connection,
const char *username,
const char *password)
{
struct MHD_BasicAuthInfo *auth_info;
int authenticated;
auth_info = MHD_basic_auth_get_username_password3 (connection);
if (NULL == auth_info)
return 0;
authenticated =
( (strlen (username) == auth_info->username_len) &&
(0 == memcmp (auth_info->username, username, auth_info->username_len)) &&
/* The next check against NULL is optional,
* if 'password' is NULL then 'password_len' is always zero. */
(NULL != auth_info->password) &&
(strlen (password) == auth_info->password_len) &&
(0 == memcmp (auth_info->password, password, auth_info->password_len)) );
MHD_free (auth_info);
return authenticated;
}
static enum MHD_Result
secret_page (struct MHD_Connection *connection)
{
enum MHD_Result ret;
struct MHD_Response *response;
const char *page = "<html><body>A secret.</body></html>";
response = MHD_create_response_from_buffer_static (strlen (page), page);
if (! response)
return MHD_NO;
ret = MHD_queue_response (connection, MHD_HTTP_OK, response);
MHD_destroy_response (response);
return ret;
}
static enum MHD_Result
answer_to_connection (void *cls, struct MHD_Connection *connection,
const char *url, const char *method,
const char *version, const char *upload_data,
size_t *upload_data_size, void **req_cls)
{
(void) cls; /* Unused. Silent compiler warning. */
(void) url; /* Unused. Silent compiler warning. */
(void) version; /* Unused. Silent compiler warning. */
(void) upload_data; /* Unused. Silent compiler warning. */
(void) upload_data_size; /* Unused. Silent compiler warning. */
if (0 != strcmp (method, "GET"))
return MHD_NO;
if (NULL == *req_cls)
{
*req_cls = connection;
return MHD_YES;
}
if (! is_authenticated (connection, USER, PASSWORD))
return ask_for_authentication (connection, REALM);
return secret_page (connection);
}
int
main (void)
{
struct MHD_Daemon *daemon;
char *key_pem;
char *cert_pem;
key_pem = load_file (SERVERKEYFILE);
cert_pem = load_file (SERVERCERTFILE);
if ((key_pem == NULL) || (cert_pem == NULL))
{
printf ("The key/certificate files could not be read.\n");
if (NULL != key_pem)
free (key_pem);
if (NULL != cert_pem)
free (cert_pem);
return 1;
}
daemon =
MHD_start_daemon (MHD_USE_INTERNAL_POLLING_THREAD | MHD_USE_TLS, PORT, NULL,
NULL, &answer_to_connection, NULL,
MHD_OPTION_HTTPS_MEM_KEY, key_pem,
MHD_OPTION_HTTPS_MEM_CERT, cert_pem, MHD_OPTION_END);
if (NULL == daemon)
{
printf ("%s\n", cert_pem);
free (key_pem);
free (cert_pem);
return 1;
}
(void) getchar ();
MHD_stop_daemon (daemon);
free (key_pem);
free (cert_pem);
return 0;
}
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