1 /* 2 This file is part of libmicrohttpd 3 Copyright (C) 2010 Christian Grothoff (and other contributing authors) 4 5 This library is free software; you can redistribute it and/or 6 modify it under the terms of the GNU Lesser General Public 7 License as published by the Free Software Foundation; either 8 version 2.1 of the License, or (at your option) any later version. 9 10 This library is distributed in the hope that it will be useful, 11 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 Lesser General Public License for more details. 14 15 You should have received a copy of the GNU Lesser General Public 16 License along with this library; if not, write to the Free Software 17 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 18 */ 19 /** 20 * @file digest_auth_example.c 21 * @brief minimal example for how to use digest auth with libmicrohttpd 22 * @author Amr Ali 23 */ 24 25 #include "platform.h" 26 #include <microhttpd.h> 27 #include <stdlib.h> 28 29 #define PAGE "<html><head><title>libmicrohttpd demo</title></head><body>Access granted</body></html>" 30 31 #define DENIED "<html><head><title>libmicrohttpd demo</title></head><body>Access denied</body></html>" 32 33 #define MY_OPAQUE_STR "11733b200778ce33060f31c9af70a870ba96ddd4" 34 35 static int 36 ahc_echo (void *cls, 37 struct MHD_Connection *connection, 38 const char *url, 39 const char *method, 40 const char *version, 41 const char *upload_data, size_t *upload_data_size, void **ptr) 42 { 43 struct MHD_Response *response; 44 char *username; 45 const char *password = "testpass"; 46 const char *realm = "test (at) example.com"; 47 int ret; 48 49 username = MHD_digest_auth_get_username(connection); 50 if (username == NULL) 51 { 52 response = MHD_create_response_from_buffer(strlen (DENIED), 53 DENIED, 54 MHD_RESPMEM_PERSISTENT); 55 ret = MHD_queue_auth_fail_response(connection, realm, 56 MY_OPAQUE_STR, 57 response, 58 MHD_NO); 59 MHD_destroy_response(response); 60 return ret; 61 } 62 ret = MHD_digest_auth_check(connection, realm, 63 username, 64 password, 65 300); 66 free(username); 67 if ( (ret == MHD_INVALID_NONCE) || 68 (ret == MHD_NO) ) 69 { 70 response = MHD_create_response_from_buffer(strlen (DENIED), 71 DENIED, 72 MHD_RESPMEM_PERSISTENT); 73 if (NULL == response) 74 return MHD_NO; 75 ret = MHD_queue_auth_fail_response(connection, realm, 76 MY_OPAQUE_STR, 77 response, 78 (ret == MHD_INVALID_NONCE) ? MHD_YES : MHD_NO); 79 MHD_destroy_response(response); 80 return ret; 81 } 82 response = MHD_create_response_from_buffer(strlen(PAGE), PAGE, 83 MHD_RESPMEM_PERSISTENT); 84 ret = MHD_queue_response(connection, MHD_HTTP_OK, response); 85 MHD_destroy_response(response); 86 return ret; 87 } 88 89 int 90 main (int argc, char *const *argv) 91 { 92 int fd; 93 char rnd[8]; 94 ssize_t len; 95 size_t off; 96 struct MHD_Daemon *d; 97 98 if (argc != 2) 99 { 100 printf ("%s PORT\n", argv[0]); 101 return 1; 102 } 103 fd = open("/dev/urandom", O_RDONLY); 104 if (-1 == fd) 105 { 106 fprintf (stderr, "Failed to open `%s': %s\n", 107 "/dev/urandom", 108 strerror (errno)); 109 return 1; 110 } 111 off = 0; 112 while (off < 8) 113 { 114 len = read(fd, rnd, 8); 115 if (len == -1) 116 { 117 fprintf (stderr, "Failed to read `%s': %s\n", 118 "/dev/urandom", 119 strerror (errno)); 120 (void) close (fd); 121 return 1; 122 } 123 off += len; 124 } 125 (void) close(fd); 126 d = MHD_start_daemon (MHD_USE_THREAD_PER_CONNECTION | MHD_USE_DEBUG, 127 atoi (argv[1]), 128 NULL, NULL, &ahc_echo, PAGE, 129 MHD_OPTION_DIGEST_AUTH_RANDOM, sizeof(rnd), rnd, 130 MHD_OPTION_NONCE_NC_SIZE, 300, 131 MHD_OPTION_CONNECTION_TIMEOUT, (unsigned int) 120, 132 MHD_OPTION_END); 133 if (d == NULL) 134 return 1; 135 (void) getc (stdin); 136 MHD_stop_daemon (d); 137 return 0; 138 } 139 140 /* end of digest_auth_example.c */ 141
