| /* |
| This file is part of libmicrohttpd |
| Copyright (C) 2007, 2008 Christian Grothoff (and other contributing authors) |
| Copyright (C) 2016-2022 Evgeny Grin (Karlson2k) |
| |
| 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 refuse_post_example.c |
| * @brief example for how to refuse a POST request properly |
| * @author Christian Grothoff and Sebastian Gerhardt |
| * @author Karlson2k (Evgeny Grin) |
| */ |
| #include "platform.h" |
| #include <microhttpd.h> |
| |
| struct handler_param |
| { |
| const char *response_page; |
| }; |
| |
| static const char *askpage = |
| "<html><body>\n\ |
| Upload a file, please!<br>\n\ |
| <form action=\"/filepost\" method=\"post\" enctype=\"multipart/form-data\">\n\ |
| <input name=\"file\" type=\"file\">\n\ |
| <input type=\"submit\" value=\" Send \"></form>\n\ |
| </body></html>"; |
| |
| #define BUSYPAGE \ |
| "<html><head><title>Webserver busy</title></head>" \ |
| "<body>We are too busy to process POSTs right now.</body></html>" |
| |
| static enum MHD_Result |
| 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 **req_cls) |
| { |
| static int aptr; |
| struct handler_param *param = (struct handler_param *) cls; |
| struct MHD_Response *response; |
| enum MHD_Result ret; |
| (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")) && (0 != strcmp (method, "POST"))) |
| return MHD_NO; /* unexpected method */ |
| |
| if (&aptr != *req_cls) |
| { |
| *req_cls = &aptr; |
| |
| /* always to busy for POST requests */ |
| if (0 == strcmp (method, "POST")) |
| { |
| response = |
| MHD_create_response_from_buffer_static (strlen (BUSYPAGE), |
| (const void *) BUSYPAGE); |
| ret = |
| MHD_queue_response (connection, MHD_HTTP_SERVICE_UNAVAILABLE, |
| response); |
| MHD_destroy_response (response); |
| return ret; |
| } |
| } |
| |
| *req_cls = NULL; /* reset when done */ |
| response = |
| MHD_create_response_from_buffer_static (strlen (param->response_page), |
| (const void *) |
| param->response_page); |
| 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; |
| struct handler_param data_for_handler; |
| int port; |
| |
| if (argc != 2) |
| { |
| printf ("%s PORT\n", argv[0]); |
| return 1; |
| } |
| port = atoi (argv[1]); |
| if ( (1 > port) || (port > 65535) ) |
| { |
| fprintf (stderr, |
| "Port must be a number between 1 and 65535.\n"); |
| return 1; |
| } |
| data_for_handler.response_page = askpage; |
| 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, &data_for_handler, |
| MHD_OPTION_END); |
| if (d == NULL) |
| return 1; |
| (void) getc (stdin); |
| MHD_stop_daemon (d); |
| return 0; |
| } |
| |
| |
| /* end of refuse_post_example.c */ |
