Blame src/examples/authorization_example.c

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/*
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     This file is part of libmicrohttpd
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     Copyright (C) 2008 Christian Grothoff (and other contributing authors)
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     This library is free software; you can redistribute it and/or
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     modify it under the terms of the GNU Lesser General Public
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     License as published by the Free Software Foundation; either
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     version 2.1 of the License, or (at your option) any later version.
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     This library is distributed in the hope that it will be useful,
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     but WITHOUT ANY WARRANTY; without even the implied warranty of
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     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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     Lesser General Public License for more details.
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     You should have received a copy of the GNU Lesser General Public
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     License along with this library; if not, write to the Free Software
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     Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
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*/
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/**
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 * @file authorization_example.c
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 * @brief example for how to use libmicrohttpd with HTTP authentication
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 * @author Christian Grothoff
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 */
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#include "platform.h"
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#include <microhttpd.h>
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#ifdef _WIN32
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#ifndef WIN32_LEAN_AND_MEAN
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#define WIN32_LEAN_AND_MEAN 1
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#endif /* !WIN32_LEAN_AND_MEAN */
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#include <windows.h>
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#endif
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#define PAGE "<html><head><title>libmicrohttpd demo</title></head><body>libmicrohttpd demo</body></html>"
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#define DENIED "<html><head><title>Access denied</title></head><body>Access denied</body></html>"
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static int
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ahc_echo (void *cls,
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          struct MHD_Connection *connection,
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          const char *url,
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          const char *method,
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          const char *version,
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          const char *upload_data, size_t *upload_data_size, void **ptr)
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{
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  static int aptr;
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  const char *me = cls;
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  struct MHD_Response *response;
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  int ret;
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  char *user;
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  char *pass;
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  int fail;
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  (void)url;               /* Unused. Silent compiler warning. */
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  (void)version;           /* Unused. Silent compiler warning. */
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  (void)upload_data;       /* Unused. Silent compiler warning. */
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  (void)upload_data_size;  /* Unused. Silent compiler warning. */
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  if (0 != strcmp (method, "GET"))
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    return MHD_NO;              /* unexpected method */
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  if (&aptr != *ptr)
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    {
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      /* do never respond on first call */
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      *ptr = &apt;;
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      return MHD_YES;
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    }
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  *ptr = NULL;                  /* reset when done */
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  /* require: "Aladdin" with password "open sesame" */
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  pass = NULL;
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  user = MHD_basic_auth_get_username_password (connection,
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                                               &pass);
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  fail = ( (NULL == user) ||
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           (0 != strcmp (user, "Aladdin")) ||
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           (0 != strcmp (pass, "open sesame") ) );
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  if (fail)
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  {
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      response = MHD_create_response_from_buffer (strlen (DENIED),
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						  (void *) DENIED,
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						  MHD_RESPMEM_PERSISTENT);
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      ret = MHD_queue_basic_auth_fail_response (connection,"TestRealm",response);
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    }
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  else
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    {
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      response = MHD_create_response_from_buffer (strlen (me),
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						  (void *) me,
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						  MHD_RESPMEM_PERSISTENT);
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      ret = MHD_queue_response (connection, MHD_HTTP_OK, response);
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    }
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  if (NULL != user)
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    MHD_free (user);
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  if (NULL != pass)
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    MHD_free (pass);
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  MHD_destroy_response (response);
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  return ret;
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}
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int
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main (int argc, char *const *argv)
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{
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  struct MHD_Daemon *d;
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  unsigned int port;
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  if ( (argc != 2) ||
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       (1 != sscanf (argv[1], "%u", &port)) ||
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       (UINT16_MAX < port) )
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    {
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      fprintf (stderr,
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	       "%s PORT\n", argv[0]);
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      return 1;
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    }
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  d = MHD_start_daemon (MHD_USE_THREAD_PER_CONNECTION | MHD_USE_INTERNAL_POLLING_THREAD | MHD_USE_ERROR_LOG,
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                        atoi (argv[1]),
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                        NULL, NULL, &ahc_echo, PAGE, MHD_OPTION_END);
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  if (d == NULL)
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    return 1;
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  fprintf (stderr, "HTTP server running. Press ENTER to stop the server\n");
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  (void) getc (stdin);
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  MHD_stop_daemon (d);
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  return 0;
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}