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/*
This file is part of libmicrohttpd
Copyright (C) 2007, 2008 Christian Grothoff (and other contributing authors)
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file querystring_example.c
* @brief example for how to get the query string from libmicrohttpd
* Call with an URI ending with something like "?q=QUERY"
* @author Christian Grothoff
*/
#include "platform.h"
#include <microhttpd.h>
#define PAGE "<html><head><title>libmicrohttpd demo</title></head><body>Query string for "%s" was "%s"</body></html>"
static int
ahc_echo (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 **ptr)
{
static int aptr;
const char *fmt = cls;
const char *val;
char *me;
struct MHD_Response *response;
int ret;
(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; /* unexpected method */
if (&aptr != *ptr)
{
/* do never respond on first call */
*ptr = &aptr;
return MHD_YES;
}
*ptr = NULL; /* reset when done */
val = MHD_lookup_connection_value (connection, MHD_GET_ARGUMENT_KIND, "q");
me = malloc (snprintf (NULL, 0, fmt, "q", val) + 1);
if (me == NULL)
return MHD_NO;
sprintf (me, fmt, "q", val);
response = MHD_create_response_from_buffer (strlen (me), me,
MHD_RESPMEM_MUST_FREE);
if (response == NULL)
{
free (me);
return MHD_NO;
}
ret = MHD_queue_response (connection, MHD_HTTP_OK, response);
MHD_destroy_response (response);
return ret;
}
int
main (int argc, char *const *argv)
{
struct MHD_Daemon *d;
int port;
if (argc != 2)
{
printf ("%s PORT\n", argv[0]);
return 1;
}
port = atoi (argv[1]);
if ( (port < 0) ||
(port > UINT16_MAX) )
{
printf ("%s PORT\n", argv[0]);
return 1;
}
d = MHD_start_daemon (MHD_USE_THREAD_PER_CONNECTION | MHD_USE_INTERNAL_POLLING_THREAD | MHD_USE_ERROR_LOG,
(uint16_t) port,
NULL, NULL, &ahc_echo, PAGE, MHD_OPTION_END);
if (NULL == d)
return 1;
(void) getc (stdin);
MHD_stop_daemon (d);
return 0;
}
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