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/* This file is part of libmicrohttpd (C) 2007 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 fileserver_example.c * @brief minimal example for how to use libmicrohttpd to serve files * @author Christian Grothoff */ #include "platform.h" #include #include #define PAGE "File not foundFile not found" static int file_reader (void *cls, uint64_t pos, char *buf, int max) { FILE *file = cls; fseek (file, pos, SEEK_SET); return fread (buf, 1, max, file); } static void free_callback (void *cls) { FILE *file = cls; fclose (file); } 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; struct MHD_Response *response; int ret; FILE *file; struct stat buf; if (0 != strcmp (method, MHD_HTTP_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 */ if (0 == stat (&url[1], &buf)) file = fopen (&url[1], "rb"); else file = NULL; if (file == NULL) { response = MHD_create_response_from_data (strlen (PAGE), (void *) PAGE, MHD_NO, MHD_NO); ret = MHD_queue_response (connection, MHD_HTTP_NOT_FOUND, response); MHD_destroy_response (response); } else { response = MHD_create_response_from_callback (buf.st_size, 32 * 1024, /* 32k page size */ &file_reader, file, &free_callback); if (response == NULL) { fclose (file); 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; getc (stdin); MHD_stop_daemon (d); return 0; }