| /* |
| 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; |
| |
| 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; |
| |
| if (argc != 2) |
| { |
| printf ("%s PORT\n", argv[0]); |
| return 1; |
| } |
| d = MHD_start_daemon (MHD_USE_THREAD_PER_CONNECTION | MHD_USE_DEBUG, |
| atoi (argv[1]), |
| NULL, NULL, &ahc_echo, PAGE, MHD_OPTION_END); |
| if (d == NULL) |
| return 1; |
| (void) getc (stdin); |
| MHD_stop_daemon (d); |
| return 0; |
| } |
