The Tor Browser / file comparison
comparison: media/mtransport/third_party/nICEr/src/stun/stun_msg.c
media/mtransport/third_party/nICEr/src/stun/stun_msg.c
- branch
- TOR_BUG_9701
- changeset 8
- 97036ab72558
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deleted
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| -1:000000000000 | 0:0761e37c687a |
|---|---|
| 1 /* | |
| 2 Copyright (c) 2007, Adobe Systems, Incorporated | |
| 3 All rights reserved. | |
| 4 | |
| 5 Redistribution and use in source and binary forms, with or without | |
| 6 modification, are permitted provided that the following conditions are | |
| 7 met: | |
| 8 | |
| 9 * Redistributions of source code must retain the above copyright | |
| 10 notice, this list of conditions and the following disclaimer. | |
| 11 | |
| 12 * Redistributions in binary form must reproduce the above copyright | |
| 13 notice, this list of conditions and the following disclaimer in the | |
| 14 documentation and/or other materials provided with the distribution. | |
| 15 | |
| 16 * Neither the name of Adobe Systems, Network Resonance nor the names of its | |
| 17 contributors may be used to endorse or promote products derived from | |
| 18 this software without specific prior written permission. | |
| 19 | |
| 20 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
| 21 "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
| 22 LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
| 23 A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
| 24 OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
| 25 SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
| 26 LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
| 27 DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
| 28 THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 29 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
| 30 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 31 */ | |
| 32 | |
| 33 | |
| 34 static char *RCSSTRING __UNUSED__="$Id: stun_msg.c,v 1.2 2008/04/28 18:21:30 ekr Exp $"; | |
| 35 | |
| 36 #include <errno.h> | |
| 37 #include <csi_platform.h> | |
| 38 | |
| 39 #ifdef WIN32 | |
| 40 #include <winsock2.h> | |
| 41 #include <stdlib.h> | |
| 42 #include <io.h> | |
| 43 #include <time.h> | |
| 44 #else /* UNIX */ | |
| 45 #include <string.h> | |
| 46 #endif /* end UNIX */ | |
| 47 #include <assert.h> | |
| 48 | |
| 49 #include "stun.h" | |
| 50 | |
| 51 | |
| 52 int | |
| 53 nr_stun_message_create(nr_stun_message **msg) | |
| 54 { | |
| 55 int _status; | |
| 56 nr_stun_message *m = 0; | |
| 57 | |
| 58 m = RCALLOC(sizeof(*m)); | |
| 59 if (!m) | |
| 60 ABORT(R_NO_MEMORY); | |
| 61 | |
| 62 TAILQ_INIT(&m->attributes); | |
| 63 | |
| 64 *msg = m; | |
| 65 | |
| 66 _status=0; | |
| 67 abort: | |
| 68 return(_status); | |
| 69 } | |
| 70 | |
| 71 int | |
| 72 nr_stun_message_create2(nr_stun_message **msg, UCHAR *buffer, int length) | |
| 73 { | |
| 74 int r,_status; | |
| 75 nr_stun_message *m = 0; | |
| 76 | |
| 77 if (length > sizeof(m->buffer)) { | |
| 78 ABORT(R_BAD_DATA); | |
| 79 } | |
| 80 | |
| 81 if ((r=nr_stun_message_create(&m))) | |
| 82 ABORT(r); | |
| 83 | |
| 84 memcpy(m->buffer, buffer, length); | |
| 85 m->length = length; | |
| 86 | |
| 87 *msg = m; | |
| 88 | |
| 89 _status=0; | |
| 90 abort: | |
| 91 return(_status); | |
| 92 } | |
| 93 | |
| 94 int | |
| 95 nr_stun_message_destroy(nr_stun_message **msg) | |
| 96 { | |
| 97 int _status; | |
| 98 nr_stun_message_attribute_head *attrs; | |
| 99 nr_stun_message_attribute *attr; | |
| 100 | |
| 101 if (msg && *msg) { | |
| 102 attrs = &(*msg)->attributes; | |
| 103 while (!TAILQ_EMPTY(attrs)) { | |
| 104 attr = TAILQ_FIRST(attrs); | |
| 105 nr_stun_message_attribute_destroy(*msg, &attr); | |
| 106 } | |
| 107 | |
| 108 RFREE(*msg); | |
| 109 | |
| 110 *msg = 0; | |
| 111 } | |
| 112 | |
| 113 _status=0; | |
| 114 /* abort: */ | |
| 115 return(_status); | |
| 116 } | |
| 117 | |
| 118 int | |
| 119 nr_stun_message_attribute_create(nr_stun_message *msg, nr_stun_message_attribute **attr) | |
| 120 { | |
| 121 int _status; | |
| 122 nr_stun_message_attribute *a = 0; | |
| 123 | |
| 124 a = RCALLOC(sizeof(*a)); | |
| 125 if (!a) | |
| 126 ABORT(R_NO_MEMORY); | |
| 127 | |
| 128 TAILQ_INSERT_TAIL(&msg->attributes, a, entry); | |
| 129 | |
| 130 *attr = a; | |
| 131 | |
| 132 _status=0; | |
| 133 abort: | |
| 134 return(_status); | |
| 135 } | |
| 136 | |
| 137 int | |
| 138 nr_stun_message_attribute_destroy(nr_stun_message *msg, nr_stun_message_attribute **attr) | |
| 139 { | |
| 140 int _status; | |
| 141 nr_stun_message_attribute *a = 0; | |
| 142 | |
| 143 if (attr && *attr) { | |
| 144 a = *attr; | |
| 145 TAILQ_REMOVE(&msg->attributes, a, entry); | |
| 146 | |
| 147 RFREE(a); | |
| 148 | |
| 149 *attr = 0; | |
| 150 } | |
| 151 | |
| 152 _status=0; | |
| 153 /* abort: */ | |
| 154 return(_status); | |
| 155 } | |
| 156 | |
| 157 int | |
| 158 nr_stun_message_has_attribute(nr_stun_message *msg, UINT2 type, nr_stun_message_attribute **attribute) | |
| 159 { | |
| 160 nr_stun_message_attribute *attr = 0; | |
| 161 | |
| 162 if (attribute) | |
| 163 *attribute = 0; | |
| 164 | |
| 165 TAILQ_FOREACH(attr, &msg->attributes, entry) { | |
| 166 if (attr->type == type) | |
| 167 break; | |
| 168 } | |
| 169 | |
| 170 if (!attr || attr->invalid) | |
| 171 return 0; /* does not have */ | |
| 172 | |
| 173 if (attribute) | |
| 174 *attribute = attr; | |
| 175 | |
| 176 return 1; /* has */ | |
| 177 } | |
| 178 | |
| 179 #define NR_STUN_MESSAGE_ADD_ATTRIBUTE(__type, __code) \ | |
| 180 { \ | |
| 181 int r,_status; \ | |
| 182 nr_stun_message_attribute *attr = 0; \ | |
| 183 if ((r=nr_stun_message_attribute_create(msg, &attr))) \ | |
| 184 ABORT(r); \ | |
| 185 attr->type = (__type); \ | |
| 186 { __code } \ | |
| 187 _status=0; \ | |
| 188 abort: \ | |
| 189 if (_status) RFREE(attr); \ | |
| 190 return(_status); \ | |
| 191 } | |
| 192 | |
| 193 | |
| 194 int | |
| 195 nr_stun_message_add_alternate_server_attribute(nr_stun_message *msg, nr_transport_addr *alternate_server) | |
| 196 NR_STUN_MESSAGE_ADD_ATTRIBUTE( | |
| 197 NR_STUN_ATTR_ALTERNATE_SERVER, | |
| 198 { | |
| 199 if ((r=nr_transport_addr_copy(&attr->u.alternate_server, alternate_server))) | |
| 200 ABORT(r); | |
| 201 } | |
| 202 ) | |
| 203 | |
| 204 int | |
| 205 nr_stun_message_add_error_code_attribute(nr_stun_message *msg, UINT2 number, char *reason) | |
| 206 NR_STUN_MESSAGE_ADD_ATTRIBUTE( | |
| 207 NR_STUN_ATTR_ERROR_CODE, | |
| 208 { | |
| 209 attr->u.error_code.number = number; | |
| 210 strlcpy(attr->u.error_code.reason, reason, sizeof(attr->u.error_code.reason)); | |
| 211 } | |
| 212 ) | |
| 213 | |
| 214 int | |
| 215 nr_stun_message_add_fingerprint_attribute(nr_stun_message *msg) | |
| 216 NR_STUN_MESSAGE_ADD_ATTRIBUTE( | |
| 217 NR_STUN_ATTR_FINGERPRINT, | |
| 218 {} | |
| 219 ) | |
| 220 | |
| 221 int | |
| 222 nr_stun_message_add_message_integrity_attribute(nr_stun_message *msg, Data *password) | |
| 223 NR_STUN_MESSAGE_ADD_ATTRIBUTE( | |
| 224 NR_STUN_ATTR_MESSAGE_INTEGRITY, | |
| 225 { | |
| 226 if (sizeof(attr->u.message_integrity.password) < password->len) | |
| 227 ABORT(R_BAD_DATA); | |
| 228 | |
| 229 memcpy(attr->u.message_integrity.password, password->data, password->len); | |
| 230 attr->u.message_integrity.passwordlen = password->len; | |
| 231 } | |
| 232 ) | |
| 233 | |
| 234 int | |
| 235 nr_stun_message_add_nonce_attribute(nr_stun_message *msg, char *nonce) | |
| 236 NR_STUN_MESSAGE_ADD_ATTRIBUTE( | |
| 237 NR_STUN_ATTR_NONCE, | |
| 238 { strlcpy(attr->u.nonce, nonce, sizeof(attr->u.nonce)); } | |
| 239 ) | |
| 240 | |
| 241 int | |
| 242 nr_stun_message_add_realm_attribute(nr_stun_message *msg, char *realm) | |
| 243 NR_STUN_MESSAGE_ADD_ATTRIBUTE( | |
| 244 NR_STUN_ATTR_REALM, | |
| 245 { strlcpy(attr->u.realm, realm, sizeof(attr->u.realm)); } | |
| 246 ) | |
| 247 | |
| 248 int | |
| 249 nr_stun_message_add_server_attribute(nr_stun_message *msg, char *server_name) | |
| 250 NR_STUN_MESSAGE_ADD_ATTRIBUTE( | |
| 251 NR_STUN_ATTR_SERVER, | |
| 252 { strlcpy(attr->u.server_name, server_name, sizeof(attr->u.server_name)); } | |
| 253 ) | |
| 254 | |
| 255 int | |
| 256 nr_stun_message_add_unknown_attributes_attribute(nr_stun_message *msg, nr_stun_attr_unknown_attributes *unknown_attributes) | |
| 257 NR_STUN_MESSAGE_ADD_ATTRIBUTE( | |
| 258 NR_STUN_ATTR_UNKNOWN_ATTRIBUTES, | |
| 259 { memcpy(&attr->u.unknown_attributes, unknown_attributes, sizeof(attr->u.unknown_attributes)); } | |
| 260 ) | |
| 261 | |
| 262 int | |
| 263 nr_stun_message_add_username_attribute(nr_stun_message *msg, char *username) | |
| 264 NR_STUN_MESSAGE_ADD_ATTRIBUTE( | |
| 265 NR_STUN_ATTR_USERNAME, | |
| 266 { strlcpy(attr->u.username, username, sizeof(attr->u.username)); } | |
| 267 ) | |
| 268 | |
| 269 int | |
| 270 nr_stun_message_add_requested_transport_attribute(nr_stun_message *msg, UCHAR protocol) | |
| 271 NR_STUN_MESSAGE_ADD_ATTRIBUTE( | |
| 272 NR_STUN_ATTR_REQUESTED_TRANSPORT, | |
| 273 { attr->u.requested_transport = protocol; } | |
| 274 ) | |
| 275 | |
| 276 int | |
| 277 nr_stun_message_add_xor_mapped_address_attribute(nr_stun_message *msg, nr_transport_addr *mapped_address) | |
| 278 NR_STUN_MESSAGE_ADD_ATTRIBUTE( | |
| 279 NR_STUN_ATTR_XOR_MAPPED_ADDRESS, | |
| 280 { | |
| 281 if ((r=nr_transport_addr_copy(&attr->u.xor_mapped_address.unmasked, mapped_address))) | |
| 282 ABORT(r); | |
| 283 } | |
| 284 ) | |
| 285 | |
| 286 int | |
| 287 nr_stun_message_add_xor_peer_address_attribute(nr_stun_message *msg, nr_transport_addr *peer_address) | |
| 288 NR_STUN_MESSAGE_ADD_ATTRIBUTE( | |
| 289 NR_STUN_ATTR_XOR_PEER_ADDRESS, | |
| 290 { | |
| 291 if ((r=nr_transport_addr_copy(&attr->u.xor_mapped_address.unmasked, peer_address))) | |
| 292 ABORT(r); | |
| 293 } | |
| 294 ) | |
| 295 | |
| 296 #ifdef USE_ICE | |
| 297 int | |
| 298 nr_stun_message_add_ice_controlled_attribute(nr_stun_message *msg, UINT8 ice_controlled) | |
| 299 NR_STUN_MESSAGE_ADD_ATTRIBUTE( | |
| 300 NR_STUN_ATTR_ICE_CONTROLLED, | |
| 301 { attr->u.ice_controlled = ice_controlled; } | |
| 302 ) | |
| 303 | |
| 304 int | |
| 305 nr_stun_message_add_ice_controlling_attribute(nr_stun_message *msg, UINT8 ice_controlling) | |
| 306 NR_STUN_MESSAGE_ADD_ATTRIBUTE( | |
| 307 NR_STUN_ATTR_ICE_CONTROLLING, | |
| 308 { attr->u.ice_controlling = ice_controlling; } | |
| 309 ) | |
| 310 | |
| 311 int | |
| 312 nr_stun_message_add_priority_attribute(nr_stun_message *msg, UINT4 priority) | |
| 313 NR_STUN_MESSAGE_ADD_ATTRIBUTE( | |
| 314 NR_STUN_ATTR_PRIORITY, | |
| 315 { attr->u.priority = priority; } | |
| 316 ) | |
| 317 | |
| 318 int | |
| 319 nr_stun_message_add_use_candidate_attribute(nr_stun_message *msg) | |
| 320 NR_STUN_MESSAGE_ADD_ATTRIBUTE( | |
| 321 NR_STUN_ATTR_USE_CANDIDATE, | |
| 322 {} | |
| 323 ) | |
| 324 #endif /* USE_ICE */ | |
| 325 | |
| 326 #ifdef USE_TURN | |
| 327 int | |
| 328 nr_stun_message_add_data_attribute(nr_stun_message *msg, UCHAR *data, int length) | |
| 329 | |
| 330 NR_STUN_MESSAGE_ADD_ATTRIBUTE( | |
| 331 NR_STUN_ATTR_DATA, | |
| 332 { | |
| 333 if (length > NR_STUN_MAX_MESSAGE_SIZE) | |
| 334 ABORT(R_BAD_ARGS); | |
| 335 | |
| 336 memcpy(attr->u.data.data, data, length); | |
| 337 attr->u.data.length=length; | |
| 338 } | |
| 339 ) | |
| 340 | |
| 341 int | |
| 342 nr_stun_message_add_lifetime_attribute(nr_stun_message *msg, UINT4 lifetime_secs) | |
| 343 NR_STUN_MESSAGE_ADD_ATTRIBUTE( | |
| 344 NR_STUN_ATTR_LIFETIME, | |
| 345 { attr->u.lifetime_secs = lifetime_secs; } | |
| 346 ) | |
| 347 | |
| 348 #endif /* USE_TURN */ | |
| 349 | |
| 350 #ifdef USE_STUND_0_96 | |
| 351 int | |
| 352 nr_stun_message_add_change_request_attribute(nr_stun_message *msg, UINT4 change_request) | |
| 353 NR_STUN_MESSAGE_ADD_ATTRIBUTE( | |
| 354 NR_STUN_ATTR_OLD_CHANGE_REQUEST, | |
| 355 { attr->u.change_request = change_request; } | |
| 356 ) | |
| 357 #endif /* USE_STUND_0_96 */ | |
| 358 |
