Alexandre Lision | 8af73cb | 2013-12-10 14:11:20 -0500 | [diff] [blame] | 1 | /* $Id$ */ |
| 2 | /* |
| 3 | * Copyright (C) 2009-2011 Teluu Inc. (http://www.teluu.com) |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License as published by |
| 7 | * the Free Software Foundation; either version 2 of the License, or |
| 8 | * (at your option) any later version. |
| 9 | * |
| 10 | * This program 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 |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License |
| 16 | * along with this program; if not, write to the Free Software |
| 17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 18 | */ |
| 19 | |
| 20 | #include <pjsip/sip_transport_tls.h> |
| 21 | #include <pjsip/sip_endpoint.h> |
| 22 | #include <pjsip/sip_errno.h> |
| 23 | #include <pj/compat/socket.h> |
| 24 | #include <pj/addr_resolv.h> |
| 25 | #include <pj/ssl_sock.h> |
| 26 | #include <pj/assert.h> |
| 27 | #include <pj/hash.h> |
| 28 | #include <pj/lock.h> |
| 29 | #include <pj/log.h> |
| 30 | #include <pj/os.h> |
| 31 | #include <pj/pool.h> |
| 32 | #include <pj/string.h> |
| 33 | |
| 34 | #if defined(PJSIP_HAS_TLS_TRANSPORT) && PJSIP_HAS_TLS_TRANSPORT!=0 |
| 35 | |
| 36 | #define THIS_FILE "sip_transport_tls.c" |
| 37 | |
| 38 | #define MAX_ASYNC_CNT 16 |
| 39 | #define POOL_LIS_INIT 512 |
| 40 | #define POOL_LIS_INC 512 |
| 41 | #define POOL_TP_INIT 512 |
| 42 | #define POOL_TP_INC 512 |
| 43 | |
| 44 | struct tls_listener; |
| 45 | struct tls_transport; |
| 46 | |
| 47 | /* |
| 48 | * Definition of TLS/SSL transport listener, and it's descendant of |
| 49 | * pjsip_tpfactory. |
| 50 | */ |
| 51 | struct tls_listener |
| 52 | { |
| 53 | pjsip_tpfactory factory; |
| 54 | pj_bool_t is_registered; |
| 55 | pjsip_endpoint *endpt; |
| 56 | pjsip_tpmgr *tpmgr; |
| 57 | pj_ssl_sock_t *ssock; |
| 58 | pj_sockaddr bound_addr; |
| 59 | pj_ssl_cert_t *cert; |
| 60 | pjsip_tls_setting tls_setting; |
| 61 | }; |
| 62 | |
| 63 | |
| 64 | /* |
| 65 | * This structure is used to keep delayed transmit operation in a list. |
| 66 | * A delayed transmission occurs when application sends tx_data when |
| 67 | * the TLS connect/establishment is still in progress. These delayed |
| 68 | * transmission will be "flushed" once the socket is connected (either |
| 69 | * successfully or with errors). |
| 70 | */ |
| 71 | struct delayed_tdata |
| 72 | { |
| 73 | PJ_DECL_LIST_MEMBER(struct delayed_tdata); |
| 74 | pjsip_tx_data_op_key *tdata_op_key; |
| 75 | pj_time_val timeout; |
| 76 | }; |
| 77 | |
| 78 | |
| 79 | /* |
| 80 | * TLS/SSL transport, and it's descendant of pjsip_transport. |
| 81 | */ |
| 82 | struct tls_transport |
| 83 | { |
| 84 | pjsip_transport base; |
| 85 | pj_bool_t is_server; |
| 86 | pj_str_t remote_name; |
| 87 | |
| 88 | pj_bool_t is_registered; |
| 89 | pj_bool_t is_closing; |
| 90 | pj_status_t close_reason; |
| 91 | pj_ssl_sock_t *ssock; |
| 92 | pj_bool_t has_pending_connect; |
| 93 | pj_bool_t verify_server; |
| 94 | |
| 95 | /* Keep-alive timer. */ |
| 96 | pj_timer_entry ka_timer; |
| 97 | pj_time_val last_activity; |
| 98 | pjsip_tx_data_op_key ka_op_key; |
| 99 | pj_str_t ka_pkt; |
| 100 | |
| 101 | /* TLS transport can only have one rdata! |
| 102 | * Otherwise chunks of incoming PDU may be received on different |
| 103 | * buffer. |
| 104 | */ |
| 105 | pjsip_rx_data rdata; |
| 106 | |
| 107 | /* Pending transmission list. */ |
| 108 | struct delayed_tdata delayed_list; |
| 109 | }; |
| 110 | |
| 111 | |
| 112 | /**************************************************************************** |
| 113 | * PROTOTYPES |
| 114 | */ |
| 115 | |
| 116 | /* This callback is called when pending accept() operation completes. */ |
| 117 | static pj_bool_t on_accept_complete(pj_ssl_sock_t *ssock, |
| 118 | pj_ssl_sock_t *new_ssock, |
| 119 | const pj_sockaddr_t *src_addr, |
| 120 | int src_addr_len); |
| 121 | |
| 122 | /* Callback on incoming data */ |
| 123 | static pj_bool_t on_data_read(pj_ssl_sock_t *ssock, |
| 124 | void *data, |
| 125 | pj_size_t size, |
| 126 | pj_status_t status, |
| 127 | pj_size_t *remainder); |
| 128 | |
| 129 | /* Callback when packet is sent */ |
| 130 | static pj_bool_t on_data_sent(pj_ssl_sock_t *ssock, |
| 131 | pj_ioqueue_op_key_t *send_key, |
| 132 | pj_ssize_t sent); |
| 133 | |
| 134 | /* This callback is called by transport manager to destroy listener */ |
| 135 | static pj_status_t lis_destroy(pjsip_tpfactory *factory); |
| 136 | |
| 137 | /* This callback is called by transport manager to create transport */ |
| 138 | static pj_status_t lis_create_transport(pjsip_tpfactory *factory, |
| 139 | pjsip_tpmgr *mgr, |
| 140 | pjsip_endpoint *endpt, |
| 141 | const pj_sockaddr *rem_addr, |
| 142 | int addr_len, |
| 143 | pjsip_tx_data *tdata, |
| 144 | pjsip_transport **transport); |
| 145 | |
| 146 | /* Common function to create and initialize transport */ |
| 147 | static pj_status_t tls_create(struct tls_listener *listener, |
| 148 | pj_pool_t *pool, |
| 149 | pj_ssl_sock_t *ssock, |
| 150 | pj_bool_t is_server, |
| 151 | const pj_sockaddr *local, |
| 152 | const pj_sockaddr *remote, |
| 153 | const pj_str_t *remote_name, |
| 154 | struct tls_transport **p_tls); |
| 155 | |
| 156 | |
| 157 | static void tls_perror(const char *sender, const char *title, |
| 158 | pj_status_t status) |
| 159 | { |
| 160 | char errmsg[PJ_ERR_MSG_SIZE]; |
| 161 | |
| 162 | pj_strerror(status, errmsg, sizeof(errmsg)); |
| 163 | |
| 164 | PJ_LOG(1,(sender, "%s: %s [code=%d]", title, errmsg, status)); |
| 165 | } |
| 166 | |
| 167 | |
| 168 | static void sockaddr_to_host_port( pj_pool_t *pool, |
| 169 | pjsip_host_port *host_port, |
| 170 | const pj_sockaddr *addr ) |
| 171 | { |
| 172 | host_port->host.ptr = (char*) pj_pool_alloc(pool, PJ_INET6_ADDRSTRLEN+4); |
| 173 | pj_sockaddr_print(addr, host_port->host.ptr, PJ_INET6_ADDRSTRLEN+4, 0); |
| 174 | host_port->host.slen = pj_ansi_strlen(host_port->host.ptr); |
| 175 | host_port->port = pj_sockaddr_get_port(addr); |
| 176 | } |
| 177 | |
| 178 | |
| 179 | static void tls_init_shutdown(struct tls_transport *tls, pj_status_t status) |
| 180 | { |
| 181 | pjsip_tp_state_callback state_cb; |
| 182 | |
| 183 | if (tls->close_reason == PJ_SUCCESS) |
| 184 | tls->close_reason = status; |
| 185 | |
| 186 | if (tls->base.is_shutdown || tls->base.is_destroying) |
| 187 | return; |
| 188 | |
| 189 | /* Prevent immediate transport destroy by application, as transport |
| 190 | * state notification callback may be stacked and transport instance |
| 191 | * must remain valid at any point in the callback. |
| 192 | */ |
| 193 | pjsip_transport_add_ref(&tls->base); |
| 194 | |
| 195 | /* Notify application of transport disconnected state */ |
| 196 | state_cb = pjsip_tpmgr_get_state_cb(tls->base.tpmgr); |
| 197 | if (state_cb) { |
| 198 | pjsip_transport_state_info state_info; |
| 199 | pjsip_tls_state_info tls_info; |
| 200 | pj_ssl_sock_info ssl_info; |
| 201 | |
| 202 | /* Init transport state info */ |
| 203 | pj_bzero(&state_info, sizeof(state_info)); |
| 204 | state_info.status = tls->close_reason; |
| 205 | |
| 206 | if (tls->ssock && |
| 207 | pj_ssl_sock_get_info(tls->ssock, &ssl_info) == PJ_SUCCESS) |
| 208 | { |
| 209 | pj_bzero(&tls_info, sizeof(tls_info)); |
| 210 | tls_info.ssl_sock_info = &ssl_info; |
| 211 | state_info.ext_info = &tls_info; |
| 212 | } |
| 213 | |
| 214 | (*state_cb)(&tls->base, PJSIP_TP_STATE_DISCONNECTED, &state_info); |
| 215 | } |
| 216 | |
| 217 | /* check again */ |
| 218 | if (tls->base.is_shutdown || tls->base.is_destroying) |
| 219 | return; |
| 220 | |
| 221 | /* We can not destroy the transport since high level objects may |
| 222 | * still keep reference to this transport. So we can only |
| 223 | * instruct transport manager to gracefully start the shutdown |
| 224 | * procedure for this transport. |
| 225 | */ |
| 226 | pjsip_transport_shutdown(&tls->base); |
| 227 | |
| 228 | /* Now, it is ok to destroy the transport. */ |
| 229 | pjsip_transport_dec_ref(&tls->base); |
| 230 | } |
| 231 | |
| 232 | |
| 233 | /**************************************************************************** |
| 234 | * The TLS listener/transport factory. |
| 235 | */ |
| 236 | |
| 237 | /* |
| 238 | * This is the public API to create, initialize, register, and start the |
| 239 | * TLS listener. |
| 240 | */ |
| 241 | PJ_DEF(pj_status_t) pjsip_tls_transport_start (pjsip_endpoint *endpt, |
| 242 | const pjsip_tls_setting *opt, |
| 243 | const pj_sockaddr_in *local_in, |
| 244 | const pjsip_host_port *a_name, |
| 245 | unsigned async_cnt, |
| 246 | pjsip_tpfactory **p_factory) |
| 247 | { |
| 248 | pj_sockaddr local; |
| 249 | |
| 250 | if (local_in) |
| 251 | pj_sockaddr_cp(&local, local_in); |
| 252 | |
| 253 | return pjsip_tls_transport_start2(endpt, opt, (local_in? &local : NULL), |
| 254 | a_name, async_cnt, p_factory); |
| 255 | } |
| 256 | |
| 257 | PJ_DEF(pj_status_t) pjsip_tls_transport_start2( pjsip_endpoint *endpt, |
| 258 | const pjsip_tls_setting *opt, |
| 259 | const pj_sockaddr *local, |
| 260 | const pjsip_host_port *a_name, |
| 261 | unsigned async_cnt, |
| 262 | pjsip_tpfactory **p_factory) |
| 263 | { |
| 264 | pj_pool_t *pool; |
| 265 | pj_bool_t is_ipv6; |
| 266 | int af; |
| 267 | struct tls_listener *listener; |
| 268 | pj_ssl_sock_param ssock_param; |
| 269 | pj_sockaddr *listener_addr; |
| 270 | pj_bool_t has_listener; |
| 271 | pj_status_t status; |
| 272 | |
| 273 | /* Sanity check */ |
| 274 | PJ_ASSERT_RETURN(endpt && async_cnt, PJ_EINVAL); |
| 275 | |
| 276 | is_ipv6 = (local && local->addr.sa_family == pj_AF_INET6()); |
| 277 | af = is_ipv6 ? pj_AF_INET6() : pj_AF_INET(); |
| 278 | |
| 279 | /* Verify that address given in a_name (if any) is valid */ |
| 280 | if (a_name && a_name->host.slen) { |
| 281 | pj_sockaddr tmp; |
| 282 | |
| 283 | status = pj_sockaddr_init(af, &tmp, &a_name->host, |
| 284 | (pj_uint16_t)a_name->port); |
| 285 | if (status != PJ_SUCCESS || !pj_sockaddr_has_addr(&tmp) || |
| 286 | (!is_ipv6 && tmp.ipv4.sin_addr.s_addr == PJ_INADDR_NONE)) |
| 287 | { |
| 288 | /* Invalid address */ |
| 289 | return PJ_EINVAL; |
| 290 | } |
| 291 | } |
| 292 | |
| 293 | pool = pjsip_endpt_create_pool(endpt, "tlslis", POOL_LIS_INIT, |
| 294 | POOL_LIS_INC); |
| 295 | PJ_ASSERT_RETURN(pool, PJ_ENOMEM); |
| 296 | |
| 297 | listener = PJ_POOL_ZALLOC_T(pool, struct tls_listener); |
| 298 | listener->factory.pool = pool; |
| 299 | if (is_ipv6) |
| 300 | listener->factory.type = PJSIP_TRANSPORT_TLS6; |
| 301 | else |
| 302 | listener->factory.type = PJSIP_TRANSPORT_TLS; |
| 303 | listener->factory.type_name = (char*) |
| 304 | pjsip_transport_get_type_name(listener->factory.type); |
| 305 | listener->factory.flag = |
| 306 | pjsip_transport_get_flag_from_type(listener->factory.type); |
| 307 | |
| 308 | pj_ansi_strcpy(listener->factory.obj_name, "tlslis"); |
| 309 | if (is_ipv6) |
| 310 | pj_ansi_strcat(listener->factory.obj_name, "6"); |
| 311 | |
| 312 | if (opt) |
| 313 | pjsip_tls_setting_copy(pool, &listener->tls_setting, opt); |
| 314 | else |
| 315 | pjsip_tls_setting_default(&listener->tls_setting); |
| 316 | |
| 317 | status = pj_lock_create_recursive_mutex(pool, listener->factory.obj_name, |
| 318 | &listener->factory.lock); |
| 319 | if (status != PJ_SUCCESS) |
| 320 | goto on_error; |
| 321 | |
| 322 | if (async_cnt > MAX_ASYNC_CNT) |
| 323 | async_cnt = MAX_ASYNC_CNT; |
| 324 | |
| 325 | /* Build SSL socket param */ |
| 326 | pj_ssl_sock_param_default(&ssock_param); |
| 327 | ssock_param.sock_af = af; |
| 328 | ssock_param.cb.on_accept_complete = &on_accept_complete; |
| 329 | ssock_param.cb.on_data_read = &on_data_read; |
| 330 | ssock_param.cb.on_data_sent = &on_data_sent; |
| 331 | ssock_param.async_cnt = async_cnt; |
| 332 | ssock_param.ioqueue = pjsip_endpt_get_ioqueue(endpt); |
| 333 | ssock_param.require_client_cert = listener->tls_setting.require_client_cert; |
| 334 | ssock_param.timeout = listener->tls_setting.timeout; |
| 335 | ssock_param.user_data = listener; |
| 336 | ssock_param.verify_peer = PJ_FALSE; /* avoid SSL socket closing the socket |
| 337 | * due to verification error */ |
| 338 | if (ssock_param.send_buffer_size < PJSIP_MAX_PKT_LEN) |
| 339 | ssock_param.send_buffer_size = PJSIP_MAX_PKT_LEN; |
| 340 | if (ssock_param.read_buffer_size < PJSIP_MAX_PKT_LEN) |
| 341 | ssock_param.read_buffer_size = PJSIP_MAX_PKT_LEN; |
| 342 | ssock_param.ciphers_num = listener->tls_setting.ciphers_num; |
| 343 | ssock_param.ciphers = listener->tls_setting.ciphers; |
| 344 | ssock_param.reuse_addr = listener->tls_setting.reuse_addr; |
| 345 | ssock_param.qos_type = listener->tls_setting.qos_type; |
| 346 | ssock_param.qos_ignore_error = listener->tls_setting.qos_ignore_error; |
| 347 | pj_memcpy(&ssock_param.qos_params, &listener->tls_setting.qos_params, |
| 348 | sizeof(ssock_param.qos_params)); |
| 349 | |
| 350 | has_listener = PJ_FALSE; |
| 351 | |
| 352 | switch(listener->tls_setting.method) { |
| 353 | case PJSIP_TLSV1_METHOD: |
| 354 | ssock_param.proto = PJ_SSL_SOCK_PROTO_TLS1; |
| 355 | break; |
| 356 | case PJSIP_SSLV2_METHOD: |
| 357 | ssock_param.proto = PJ_SSL_SOCK_PROTO_SSL2; |
| 358 | break; |
| 359 | case PJSIP_SSLV3_METHOD: |
| 360 | ssock_param.proto = PJ_SSL_SOCK_PROTO_SSL3; |
| 361 | break; |
| 362 | case PJSIP_SSLV23_METHOD: |
| 363 | ssock_param.proto = PJ_SSL_SOCK_PROTO_SSL23; |
| 364 | break; |
| 365 | default: |
| 366 | ssock_param.proto = PJ_SSL_SOCK_PROTO_DEFAULT; |
| 367 | break; |
| 368 | } |
| 369 | |
| 370 | /* Create SSL socket */ |
| 371 | status = pj_ssl_sock_create(pool, &ssock_param, &listener->ssock); |
| 372 | if (status != PJ_SUCCESS) |
| 373 | goto on_error; |
| 374 | |
| 375 | /* Bind address may be different than factory.local_addr because |
| 376 | * factory.local_addr will be resolved below. |
| 377 | */ |
| 378 | listener_addr = &listener->factory.local_addr; |
| 379 | if (local) { |
| 380 | pj_sockaddr_cp((pj_sockaddr_t*)listener_addr, |
| 381 | (const pj_sockaddr_t*)local); |
| 382 | pj_sockaddr_cp(&listener->bound_addr, local); |
| 383 | } else { |
| 384 | pj_sockaddr_init(af, listener_addr, NULL, 0); |
| 385 | pj_sockaddr_init(af, &listener->bound_addr, NULL, 0); |
| 386 | } |
| 387 | |
| 388 | /* Check if certificate/CA list for SSL socket is set */ |
| 389 | if (listener->tls_setting.cert_file.slen || |
| 390 | listener->tls_setting.ca_list_file.slen) |
| 391 | { |
| 392 | status = pj_ssl_cert_load_from_files(pool, |
| 393 | &listener->tls_setting.ca_list_file, |
| 394 | &listener->tls_setting.cert_file, |
| 395 | &listener->tls_setting.privkey_file, |
| 396 | &listener->tls_setting.password, |
| 397 | &listener->cert); |
| 398 | if (status != PJ_SUCCESS) |
| 399 | goto on_error; |
| 400 | |
| 401 | status = pj_ssl_sock_set_certificate(listener->ssock, pool, |
| 402 | listener->cert); |
| 403 | if (status != PJ_SUCCESS) |
| 404 | goto on_error; |
| 405 | } |
| 406 | |
| 407 | /* Start accepting incoming connections. Note that some TLS/SSL backends |
| 408 | * may not support for SSL socket server. |
| 409 | */ |
| 410 | has_listener = PJ_FALSE; |
| 411 | |
| 412 | status = pj_ssl_sock_start_accept(listener->ssock, pool, |
| 413 | (pj_sockaddr_t*)listener_addr, |
| 414 | pj_sockaddr_get_len((pj_sockaddr_t*)listener_addr)); |
| 415 | if (status == PJ_SUCCESS || status == PJ_EPENDING) { |
| 416 | pj_ssl_sock_info info; |
| 417 | has_listener = PJ_TRUE; |
| 418 | |
| 419 | /* Retrieve the bound address */ |
| 420 | status = pj_ssl_sock_get_info(listener->ssock, &info); |
| 421 | if (status == PJ_SUCCESS) |
| 422 | pj_sockaddr_cp(listener_addr, (pj_sockaddr_t*)&info.local_addr); |
| 423 | } else if (status != PJ_ENOTSUP) { |
| 424 | goto on_error; |
| 425 | } |
| 426 | |
| 427 | /* If published host/IP is specified, then use that address as the |
| 428 | * listener advertised address. |
| 429 | */ |
| 430 | if (a_name && a_name->host.slen) { |
| 431 | /* Copy the address */ |
| 432 | listener->factory.addr_name = *a_name; |
| 433 | pj_strdup(listener->factory.pool, &listener->factory.addr_name.host, |
| 434 | &a_name->host); |
| 435 | listener->factory.addr_name.port = a_name->port; |
| 436 | |
| 437 | } else { |
| 438 | /* No published address is given, use the bound address */ |
| 439 | |
| 440 | /* If the address returns 0.0.0.0, use the default |
| 441 | * interface address as the transport's address. |
| 442 | */ |
| 443 | if (!pj_sockaddr_has_addr(listener_addr)) { |
| 444 | pj_sockaddr hostip; |
| 445 | |
| 446 | status = pj_gethostip(af, &hostip); |
| 447 | if (status != PJ_SUCCESS) |
| 448 | goto on_error; |
| 449 | |
| 450 | pj_sockaddr_copy_addr(listener_addr, &hostip); |
| 451 | } |
| 452 | |
| 453 | /* Save the address name */ |
| 454 | sockaddr_to_host_port(listener->factory.pool, |
| 455 | &listener->factory.addr_name, listener_addr); |
| 456 | } |
| 457 | |
| 458 | /* If port is zero, get the bound port */ |
| 459 | if (listener->factory.addr_name.port == 0) { |
| 460 | listener->factory.addr_name.port = pj_sockaddr_get_port(listener_addr); |
| 461 | } |
| 462 | |
| 463 | pj_ansi_snprintf(listener->factory.obj_name, |
| 464 | sizeof(listener->factory.obj_name), |
| 465 | "tlslis:%d", listener->factory.addr_name.port); |
| 466 | |
| 467 | /* Register to transport manager */ |
| 468 | listener->endpt = endpt; |
| 469 | listener->tpmgr = pjsip_endpt_get_tpmgr(endpt); |
| 470 | listener->factory.create_transport2 = lis_create_transport; |
| 471 | listener->factory.destroy = lis_destroy; |
| 472 | listener->is_registered = PJ_TRUE; |
| 473 | status = pjsip_tpmgr_register_tpfactory(listener->tpmgr, |
| 474 | &listener->factory); |
| 475 | if (status != PJ_SUCCESS) { |
| 476 | listener->is_registered = PJ_FALSE; |
| 477 | goto on_error; |
| 478 | } |
| 479 | |
| 480 | if (has_listener) { |
| 481 | PJ_LOG(4,(listener->factory.obj_name, |
| 482 | "SIP TLS listener is ready for incoming connections " |
| 483 | "at %.*s:%d", |
| 484 | (int)listener->factory.addr_name.host.slen, |
| 485 | listener->factory.addr_name.host.ptr, |
| 486 | listener->factory.addr_name.port)); |
| 487 | } else { |
| 488 | PJ_LOG(4,(listener->factory.obj_name, "SIP TLS is ready " |
| 489 | "(client only)")); |
| 490 | } |
| 491 | |
| 492 | /* Return the pointer to user */ |
| 493 | if (p_factory) *p_factory = &listener->factory; |
| 494 | |
| 495 | return PJ_SUCCESS; |
| 496 | |
| 497 | on_error: |
| 498 | lis_destroy(&listener->factory); |
| 499 | return status; |
| 500 | } |
| 501 | |
| 502 | |
| 503 | /* This callback is called by transport manager to destroy listener */ |
| 504 | static pj_status_t lis_destroy(pjsip_tpfactory *factory) |
| 505 | { |
| 506 | struct tls_listener *listener = (struct tls_listener *)factory; |
| 507 | |
| 508 | if (listener->is_registered) { |
| 509 | pjsip_tpmgr_unregister_tpfactory(listener->tpmgr, &listener->factory); |
| 510 | listener->is_registered = PJ_FALSE; |
| 511 | } |
| 512 | |
| 513 | if (listener->ssock) { |
| 514 | pj_ssl_sock_close(listener->ssock); |
| 515 | listener->ssock = NULL; |
| 516 | } |
| 517 | |
| 518 | if (listener->factory.lock) { |
| 519 | pj_lock_destroy(listener->factory.lock); |
| 520 | listener->factory.lock = NULL; |
| 521 | } |
| 522 | |
| 523 | if (listener->factory.pool) { |
| 524 | pj_pool_t *pool = listener->factory.pool; |
| 525 | |
| 526 | PJ_LOG(4,(listener->factory.obj_name, "SIP TLS listener destroyed")); |
| 527 | |
| 528 | listener->factory.pool = NULL; |
| 529 | pj_pool_release(pool); |
| 530 | } |
| 531 | |
| 532 | return PJ_SUCCESS; |
| 533 | } |
| 534 | |
| 535 | |
| 536 | /***************************************************************************/ |
| 537 | /* |
| 538 | * TLS Transport |
| 539 | */ |
| 540 | |
| 541 | /* |
| 542 | * Prototypes. |
| 543 | */ |
| 544 | /* Called by transport manager to send message */ |
| 545 | static pj_status_t tls_send_msg(pjsip_transport *transport, |
| 546 | pjsip_tx_data *tdata, |
| 547 | const pj_sockaddr_t *rem_addr, |
| 548 | int addr_len, |
| 549 | void *token, |
| 550 | pjsip_transport_callback callback); |
| 551 | |
| 552 | /* Called by transport manager to shutdown */ |
| 553 | static pj_status_t tls_shutdown(pjsip_transport *transport); |
| 554 | |
| 555 | /* Called by transport manager to destroy transport */ |
| 556 | static pj_status_t tls_destroy_transport(pjsip_transport *transport); |
| 557 | |
| 558 | /* Utility to destroy transport */ |
| 559 | static pj_status_t tls_destroy(pjsip_transport *transport, |
| 560 | pj_status_t reason); |
| 561 | |
| 562 | /* Callback when connect completes */ |
| 563 | static pj_bool_t on_connect_complete(pj_ssl_sock_t *ssock, |
| 564 | pj_status_t status); |
| 565 | |
| 566 | /* TLS keep-alive timer callback */ |
| 567 | static void tls_keep_alive_timer(pj_timer_heap_t *th, pj_timer_entry *e); |
| 568 | |
| 569 | /* |
| 570 | * Common function to create TLS transport, called when pending accept() and |
| 571 | * pending connect() complete. |
| 572 | */ |
| 573 | static pj_status_t tls_create( struct tls_listener *listener, |
| 574 | pj_pool_t *pool, |
| 575 | pj_ssl_sock_t *ssock, |
| 576 | pj_bool_t is_server, |
| 577 | const pj_sockaddr *local, |
| 578 | const pj_sockaddr *remote, |
| 579 | const pj_str_t *remote_name, |
| 580 | struct tls_transport **p_tls) |
| 581 | { |
| 582 | struct tls_transport *tls; |
| 583 | const pj_str_t ka_pkt = PJSIP_TLS_KEEP_ALIVE_DATA; |
| 584 | char print_addr[PJ_INET6_ADDRSTRLEN+10]; |
| 585 | pj_status_t status; |
| 586 | |
| 587 | |
| 588 | PJ_ASSERT_RETURN(listener && ssock && local && remote && p_tls, PJ_EINVAL); |
| 589 | |
| 590 | |
| 591 | if (pool == NULL) { |
| 592 | pool = pjsip_endpt_create_pool(listener->endpt, "tls", |
| 593 | POOL_TP_INIT, POOL_TP_INC); |
| 594 | PJ_ASSERT_RETURN(pool != NULL, PJ_ENOMEM); |
| 595 | } |
| 596 | |
| 597 | /* |
| 598 | * Create and initialize basic transport structure. |
| 599 | */ |
| 600 | tls = PJ_POOL_ZALLOC_T(pool, struct tls_transport); |
| 601 | tls->is_server = is_server; |
| 602 | tls->verify_server = listener->tls_setting.verify_server; |
| 603 | pj_list_init(&tls->delayed_list); |
| 604 | tls->base.pool = pool; |
| 605 | |
| 606 | pj_ansi_snprintf(tls->base.obj_name, PJ_MAX_OBJ_NAME, |
| 607 | (is_server ? "tlss%p" :"tlsc%p"), tls); |
| 608 | |
| 609 | status = pj_atomic_create(pool, 0, &tls->base.ref_cnt); |
| 610 | if (status != PJ_SUCCESS) { |
| 611 | goto on_error; |
| 612 | } |
| 613 | |
| 614 | status = pj_lock_create_recursive_mutex(pool, "tls", &tls->base.lock); |
| 615 | if (status != PJ_SUCCESS) { |
| 616 | goto on_error; |
| 617 | } |
| 618 | |
| 619 | if (remote_name) |
| 620 | pj_strdup(pool, &tls->remote_name, remote_name); |
| 621 | |
| 622 | tls->base.key.type = listener->factory.type; |
| 623 | pj_sockaddr_cp(&tls->base.key.rem_addr, remote); |
| 624 | tls->base.type_name = (char*)pjsip_transport_get_type_name( |
| 625 | (pjsip_transport_type_e)tls->base.key.type); |
| 626 | tls->base.flag = pjsip_transport_get_flag_from_type( |
| 627 | (pjsip_transport_type_e)tls->base.key.type); |
| 628 | |
| 629 | tls->base.info = (char*) pj_pool_alloc(pool, 64); |
| 630 | pj_ansi_snprintf(tls->base.info, 64, "%s to %s", |
| 631 | tls->base.type_name, |
| 632 | pj_sockaddr_print(remote, print_addr, |
| 633 | sizeof(print_addr), 3)); |
| 634 | |
| 635 | |
| 636 | tls->base.addr_len = pj_sockaddr_get_len(remote); |
| 637 | tls->base.dir = is_server? PJSIP_TP_DIR_INCOMING : PJSIP_TP_DIR_OUTGOING; |
| 638 | |
| 639 | /* Set initial local address */ |
| 640 | if (!pj_sockaddr_has_addr(local)) { |
| 641 | pj_sockaddr_cp(&tls->base.local_addr, |
| 642 | &listener->factory.local_addr); |
| 643 | } else { |
| 644 | pj_sockaddr_cp(&tls->base.local_addr, local); |
| 645 | } |
| 646 | |
| 647 | sockaddr_to_host_port(pool, &tls->base.local_name, &tls->base.local_addr); |
| 648 | if (tls->remote_name.slen) { |
| 649 | tls->base.remote_name.host = tls->remote_name; |
| 650 | tls->base.remote_name.port = pj_sockaddr_get_port(remote); |
| 651 | } else { |
| 652 | sockaddr_to_host_port(pool, &tls->base.remote_name, remote); |
| 653 | } |
| 654 | |
| 655 | tls->base.endpt = listener->endpt; |
| 656 | tls->base.tpmgr = listener->tpmgr; |
| 657 | tls->base.send_msg = &tls_send_msg; |
| 658 | tls->base.do_shutdown = &tls_shutdown; |
| 659 | tls->base.destroy = &tls_destroy_transport; |
| 660 | |
| 661 | tls->ssock = ssock; |
| 662 | |
| 663 | /* Register transport to transport manager */ |
| 664 | status = pjsip_transport_register(listener->tpmgr, &tls->base); |
| 665 | if (status != PJ_SUCCESS) { |
| 666 | goto on_error; |
| 667 | } |
| 668 | |
| 669 | tls->is_registered = PJ_TRUE; |
| 670 | |
| 671 | /* Initialize keep-alive timer */ |
| 672 | tls->ka_timer.user_data = (void*)tls; |
| 673 | tls->ka_timer.cb = &tls_keep_alive_timer; |
| 674 | pj_ioqueue_op_key_init(&tls->ka_op_key.key, sizeof(pj_ioqueue_op_key_t)); |
| 675 | pj_strdup(tls->base.pool, &tls->ka_pkt, &ka_pkt); |
| 676 | |
| 677 | /* Done setting up basic transport. */ |
| 678 | *p_tls = tls; |
| 679 | |
| 680 | PJ_LOG(4,(tls->base.obj_name, "TLS %s transport created", |
| 681 | (tls->is_server ? "server" : "client"))); |
| 682 | |
| 683 | return PJ_SUCCESS; |
| 684 | |
| 685 | on_error: |
| 686 | tls_destroy(&tls->base, status); |
| 687 | return status; |
| 688 | } |
| 689 | |
| 690 | |
| 691 | /* Flush all delayed transmision once the socket is connected. */ |
| 692 | static void tls_flush_pending_tx(struct tls_transport *tls) |
| 693 | { |
| 694 | pj_time_val now; |
| 695 | |
| 696 | pj_gettickcount(&now); |
| 697 | pj_lock_acquire(tls->base.lock); |
| 698 | while (!pj_list_empty(&tls->delayed_list)) { |
| 699 | struct delayed_tdata *pending_tx; |
| 700 | pjsip_tx_data *tdata; |
| 701 | pj_ioqueue_op_key_t *op_key; |
| 702 | pj_ssize_t size; |
| 703 | pj_status_t status; |
| 704 | |
| 705 | pending_tx = tls->delayed_list.next; |
| 706 | pj_list_erase(pending_tx); |
| 707 | |
| 708 | tdata = pending_tx->tdata_op_key->tdata; |
| 709 | op_key = (pj_ioqueue_op_key_t*)pending_tx->tdata_op_key; |
| 710 | |
| 711 | if (pending_tx->timeout.sec > 0 && |
| 712 | PJ_TIME_VAL_GT(now, pending_tx->timeout)) |
| 713 | { |
| 714 | continue; |
| 715 | } |
| 716 | |
| 717 | /* send! */ |
| 718 | size = tdata->buf.cur - tdata->buf.start; |
| 719 | status = pj_ssl_sock_send(tls->ssock, op_key, tdata->buf.start, |
| 720 | &size, 0); |
| 721 | |
| 722 | if (status != PJ_EPENDING) { |
| 723 | pj_lock_release(tls->base.lock); |
| 724 | on_data_sent(tls->ssock, op_key, size); |
| 725 | pj_lock_acquire(tls->base.lock); |
| 726 | } |
| 727 | } |
| 728 | pj_lock_release(tls->base.lock); |
| 729 | } |
| 730 | |
| 731 | |
| 732 | /* Called by transport manager to destroy transport */ |
| 733 | static pj_status_t tls_destroy_transport(pjsip_transport *transport) |
| 734 | { |
| 735 | struct tls_transport *tls = (struct tls_transport*)transport; |
| 736 | |
| 737 | /* Transport would have been unregistered by now since this callback |
| 738 | * is called by transport manager. |
| 739 | */ |
| 740 | tls->is_registered = PJ_FALSE; |
| 741 | |
| 742 | return tls_destroy(transport, tls->close_reason); |
| 743 | } |
| 744 | |
| 745 | |
| 746 | /* Destroy TLS transport */ |
| 747 | static pj_status_t tls_destroy(pjsip_transport *transport, |
| 748 | pj_status_t reason) |
| 749 | { |
| 750 | struct tls_transport *tls = (struct tls_transport*)transport; |
| 751 | |
| 752 | if (tls->close_reason == 0) |
| 753 | tls->close_reason = reason; |
| 754 | |
| 755 | if (tls->is_registered) { |
| 756 | tls->is_registered = PJ_FALSE; |
| 757 | pjsip_transport_destroy(transport); |
| 758 | |
| 759 | /* pjsip_transport_destroy will recursively call this function |
| 760 | * again. |
| 761 | */ |
| 762 | return PJ_SUCCESS; |
| 763 | } |
| 764 | |
| 765 | /* Mark transport as closing */ |
| 766 | tls->is_closing = PJ_TRUE; |
| 767 | |
| 768 | /* Stop keep-alive timer. */ |
| 769 | if (tls->ka_timer.id) { |
| 770 | pjsip_endpt_cancel_timer(tls->base.endpt, &tls->ka_timer); |
| 771 | tls->ka_timer.id = PJ_FALSE; |
| 772 | } |
| 773 | |
| 774 | /* Cancel all delayed transmits */ |
| 775 | while (!pj_list_empty(&tls->delayed_list)) { |
| 776 | struct delayed_tdata *pending_tx; |
| 777 | pj_ioqueue_op_key_t *op_key; |
| 778 | |
| 779 | pending_tx = tls->delayed_list.next; |
| 780 | pj_list_erase(pending_tx); |
| 781 | |
| 782 | op_key = (pj_ioqueue_op_key_t*)pending_tx->tdata_op_key; |
| 783 | |
| 784 | on_data_sent(tls->ssock, op_key, -reason); |
| 785 | } |
| 786 | |
| 787 | if (tls->rdata.tp_info.pool) { |
| 788 | pj_pool_release(tls->rdata.tp_info.pool); |
| 789 | tls->rdata.tp_info.pool = NULL; |
| 790 | } |
| 791 | |
| 792 | if (tls->ssock) { |
| 793 | pj_ssl_sock_close(tls->ssock); |
| 794 | tls->ssock = NULL; |
| 795 | } |
| 796 | if (tls->base.lock) { |
| 797 | pj_lock_destroy(tls->base.lock); |
| 798 | tls->base.lock = NULL; |
| 799 | } |
| 800 | |
| 801 | if (tls->base.ref_cnt) { |
| 802 | pj_atomic_destroy(tls->base.ref_cnt); |
| 803 | tls->base.ref_cnt = NULL; |
| 804 | } |
| 805 | |
| 806 | if (tls->base.pool) { |
| 807 | pj_pool_t *pool; |
| 808 | |
| 809 | if (reason != PJ_SUCCESS) { |
| 810 | char errmsg[PJ_ERR_MSG_SIZE]; |
| 811 | |
| 812 | pj_strerror(reason, errmsg, sizeof(errmsg)); |
| 813 | PJ_LOG(4,(tls->base.obj_name, |
| 814 | "TLS transport destroyed with reason %d: %s", |
| 815 | reason, errmsg)); |
| 816 | |
| 817 | } else { |
| 818 | |
| 819 | PJ_LOG(4,(tls->base.obj_name, |
| 820 | "TLS transport destroyed normally")); |
| 821 | |
| 822 | } |
| 823 | |
| 824 | pool = tls->base.pool; |
| 825 | tls->base.pool = NULL; |
| 826 | pj_pool_release(pool); |
| 827 | } |
| 828 | |
| 829 | return PJ_SUCCESS; |
| 830 | } |
| 831 | |
| 832 | |
| 833 | /* |
| 834 | * This utility function creates receive data buffers and start |
| 835 | * asynchronous recv() operations from the socket. It is called after |
| 836 | * accept() or connect() operation complete. |
| 837 | */ |
| 838 | static pj_status_t tls_start_read(struct tls_transport *tls) |
| 839 | { |
| 840 | pj_pool_t *pool; |
| 841 | pj_uint32_t size; |
| 842 | pj_sockaddr *rem_addr; |
| 843 | void *readbuf[1]; |
| 844 | pj_status_t status; |
| 845 | |
| 846 | /* Init rdata */ |
| 847 | pool = pjsip_endpt_create_pool(tls->base.endpt, |
| 848 | "rtd%p", |
| 849 | PJSIP_POOL_RDATA_LEN, |
| 850 | PJSIP_POOL_RDATA_INC); |
| 851 | if (!pool) { |
| 852 | tls_perror(tls->base.obj_name, "Unable to create pool", PJ_ENOMEM); |
| 853 | return PJ_ENOMEM; |
| 854 | } |
| 855 | |
| 856 | tls->rdata.tp_info.pool = pool; |
| 857 | |
| 858 | tls->rdata.tp_info.transport = &tls->base; |
| 859 | tls->rdata.tp_info.tp_data = tls; |
| 860 | tls->rdata.tp_info.op_key.rdata = &tls->rdata; |
| 861 | pj_ioqueue_op_key_init(&tls->rdata.tp_info.op_key.op_key, |
| 862 | sizeof(pj_ioqueue_op_key_t)); |
| 863 | |
| 864 | tls->rdata.pkt_info.src_addr = tls->base.key.rem_addr; |
| 865 | tls->rdata.pkt_info.src_addr_len = sizeof(tls->rdata.pkt_info.src_addr); |
| 866 | rem_addr = &tls->base.key.rem_addr; |
| 867 | pj_sockaddr_print(rem_addr, tls->rdata.pkt_info.src_name, |
| 868 | sizeof(tls->rdata.pkt_info.src_name), 0); |
| 869 | tls->rdata.pkt_info.src_port = pj_sockaddr_get_port(rem_addr); |
| 870 | |
| 871 | size = sizeof(tls->rdata.pkt_info.packet); |
| 872 | readbuf[0] = tls->rdata.pkt_info.packet; |
| 873 | status = pj_ssl_sock_start_read2(tls->ssock, tls->base.pool, size, |
| 874 | readbuf, 0); |
| 875 | if (status != PJ_SUCCESS && status != PJ_EPENDING) { |
| 876 | PJ_LOG(4, (tls->base.obj_name, |
| 877 | "pj_ssl_sock_start_read() error, status=%d", |
| 878 | status)); |
| 879 | return status; |
| 880 | } |
| 881 | |
| 882 | return PJ_SUCCESS; |
| 883 | } |
| 884 | |
| 885 | |
| 886 | /* This callback is called by transport manager for the TLS factory |
| 887 | * to create outgoing transport to the specified destination. |
| 888 | */ |
| 889 | static pj_status_t lis_create_transport(pjsip_tpfactory *factory, |
| 890 | pjsip_tpmgr *mgr, |
| 891 | pjsip_endpoint *endpt, |
| 892 | const pj_sockaddr *rem_addr, |
| 893 | int addr_len, |
| 894 | pjsip_tx_data *tdata, |
| 895 | pjsip_transport **p_transport) |
| 896 | { |
| 897 | struct tls_listener *listener; |
| 898 | struct tls_transport *tls; |
| 899 | pj_pool_t *pool; |
| 900 | pj_ssl_sock_t *ssock; |
| 901 | pj_ssl_sock_param ssock_param; |
| 902 | pj_sockaddr local_addr; |
| 903 | pj_str_t remote_name; |
| 904 | pj_status_t status; |
| 905 | |
| 906 | /* Sanity checks */ |
| 907 | PJ_ASSERT_RETURN(factory && mgr && endpt && rem_addr && |
| 908 | addr_len && p_transport, PJ_EINVAL); |
| 909 | |
| 910 | /* Check that address is a sockaddr_in or sockaddr_in6*/ |
| 911 | PJ_ASSERT_RETURN((rem_addr->addr.sa_family == pj_AF_INET() && |
| 912 | addr_len == sizeof(pj_sockaddr_in)) || |
| 913 | (rem_addr->addr.sa_family == pj_AF_INET6() && |
| 914 | addr_len == sizeof(pj_sockaddr_in6)), PJ_EINVAL); |
| 915 | |
| 916 | |
| 917 | listener = (struct tls_listener*)factory; |
| 918 | |
| 919 | pool = pjsip_endpt_create_pool(listener->endpt, "tls", |
| 920 | POOL_TP_INIT, POOL_TP_INC); |
| 921 | PJ_ASSERT_RETURN(pool != NULL, PJ_ENOMEM); |
| 922 | |
| 923 | /* Get remote host name from tdata */ |
| 924 | if (tdata) |
| 925 | remote_name = tdata->dest_info.name; |
| 926 | else |
| 927 | pj_bzero(&remote_name, sizeof(remote_name)); |
| 928 | |
| 929 | /* Build SSL socket param */ |
| 930 | pj_ssl_sock_param_default(&ssock_param); |
| 931 | ssock_param.sock_af = (factory->type & PJSIP_TRANSPORT_IPV6) ? |
| 932 | pj_AF_INET6() : pj_AF_INET(); |
| 933 | ssock_param.cb.on_connect_complete = &on_connect_complete; |
| 934 | ssock_param.cb.on_data_read = &on_data_read; |
| 935 | ssock_param.cb.on_data_sent = &on_data_sent; |
| 936 | ssock_param.async_cnt = 1; |
| 937 | ssock_param.ioqueue = pjsip_endpt_get_ioqueue(listener->endpt); |
| 938 | ssock_param.server_name = remote_name; |
| 939 | ssock_param.timeout = listener->tls_setting.timeout; |
| 940 | ssock_param.user_data = NULL; /* pending, must be set later */ |
| 941 | ssock_param.verify_peer = PJ_FALSE; /* avoid SSL socket closing the socket |
| 942 | * due to verification error */ |
| 943 | if (ssock_param.send_buffer_size < PJSIP_MAX_PKT_LEN) |
| 944 | ssock_param.send_buffer_size = PJSIP_MAX_PKT_LEN; |
| 945 | if (ssock_param.read_buffer_size < PJSIP_MAX_PKT_LEN) |
| 946 | ssock_param.read_buffer_size = PJSIP_MAX_PKT_LEN; |
| 947 | ssock_param.ciphers_num = listener->tls_setting.ciphers_num; |
| 948 | ssock_param.ciphers = listener->tls_setting.ciphers; |
| 949 | ssock_param.qos_type = listener->tls_setting.qos_type; |
| 950 | ssock_param.qos_ignore_error = listener->tls_setting.qos_ignore_error; |
| 951 | pj_memcpy(&ssock_param.qos_params, &listener->tls_setting.qos_params, |
| 952 | sizeof(ssock_param.qos_params)); |
| 953 | |
| 954 | switch(listener->tls_setting.method) { |
| 955 | case PJSIP_TLSV1_METHOD: |
| 956 | ssock_param.proto = PJ_SSL_SOCK_PROTO_TLS1; |
| 957 | break; |
| 958 | case PJSIP_SSLV2_METHOD: |
| 959 | ssock_param.proto = PJ_SSL_SOCK_PROTO_SSL2; |
| 960 | break; |
| 961 | case PJSIP_SSLV3_METHOD: |
| 962 | ssock_param.proto = PJ_SSL_SOCK_PROTO_SSL3; |
| 963 | break; |
| 964 | case PJSIP_SSLV23_METHOD: |
| 965 | ssock_param.proto = PJ_SSL_SOCK_PROTO_SSL23; |
| 966 | break; |
| 967 | default: |
| 968 | ssock_param.proto = PJ_SSL_SOCK_PROTO_DEFAULT; |
| 969 | break; |
| 970 | } |
| 971 | |
| 972 | status = pj_ssl_sock_create(pool, &ssock_param, &ssock); |
| 973 | if (status != PJ_SUCCESS) |
| 974 | return status; |
| 975 | |
| 976 | /* Apply SSL certificate */ |
| 977 | if (listener->cert) { |
| 978 | status = pj_ssl_sock_set_certificate(ssock, pool, listener->cert); |
| 979 | if (status != PJ_SUCCESS) |
| 980 | return status; |
| 981 | } |
| 982 | |
| 983 | /* Initially set bind address to listener's bind address */ |
| 984 | pj_sockaddr_init(listener->bound_addr.addr.sa_family, |
| 985 | &local_addr, NULL, 0); |
| 986 | pj_sockaddr_copy_addr(&local_addr, &listener->bound_addr); |
| 987 | |
| 988 | /* Create the transport descriptor */ |
| 989 | status = tls_create(listener, pool, ssock, PJ_FALSE, &local_addr, |
| 990 | rem_addr, &remote_name, &tls); |
| 991 | if (status != PJ_SUCCESS) |
| 992 | return status; |
| 993 | |
| 994 | /* Set the "pending" SSL socket user data */ |
| 995 | pj_ssl_sock_set_user_data(tls->ssock, tls); |
| 996 | |
| 997 | /* Start asynchronous connect() operation */ |
| 998 | tls->has_pending_connect = PJ_TRUE; |
| 999 | status = pj_ssl_sock_start_connect(tls->ssock, tls->base.pool, |
| 1000 | (pj_sockaddr_t*)&local_addr, |
| 1001 | (pj_sockaddr_t*)rem_addr, |
| 1002 | addr_len); |
| 1003 | if (status == PJ_SUCCESS) { |
| 1004 | on_connect_complete(tls->ssock, PJ_SUCCESS); |
| 1005 | } else if (status != PJ_EPENDING) { |
| 1006 | tls_destroy(&tls->base, status); |
| 1007 | return status; |
| 1008 | } |
| 1009 | |
| 1010 | if (tls->has_pending_connect) { |
| 1011 | pj_ssl_sock_info info; |
| 1012 | |
| 1013 | /* Update local address, just in case local address currently set is |
| 1014 | * different now that asynchronous connect() is started. |
| 1015 | */ |
| 1016 | |
| 1017 | /* Retrieve the bound address */ |
| 1018 | status = pj_ssl_sock_get_info(tls->ssock, &info); |
| 1019 | if (status == PJ_SUCCESS) { |
| 1020 | pj_uint16_t new_port; |
| 1021 | |
| 1022 | new_port = pj_sockaddr_get_port((pj_sockaddr_t*)&info.local_addr); |
| 1023 | |
| 1024 | if (pj_sockaddr_has_addr((pj_sockaddr_t*)&info.local_addr)) { |
| 1025 | /* Update sockaddr */ |
| 1026 | pj_sockaddr_cp((pj_sockaddr_t*)&tls->base.local_addr, |
| 1027 | (pj_sockaddr_t*)&info.local_addr); |
| 1028 | } else if (new_port && new_port != pj_sockaddr_get_port( |
| 1029 | (pj_sockaddr_t*)&tls->base.local_addr)) |
| 1030 | { |
| 1031 | /* Update port only */ |
| 1032 | pj_sockaddr_set_port(&tls->base.local_addr, |
| 1033 | new_port); |
| 1034 | } |
| 1035 | |
| 1036 | sockaddr_to_host_port(tls->base.pool, &tls->base.local_name, |
| 1037 | &tls->base.local_addr); |
| 1038 | } |
| 1039 | |
| 1040 | PJ_LOG(4,(tls->base.obj_name, |
| 1041 | "TLS transport %.*s:%d is connecting to %.*s:%d...", |
| 1042 | (int)tls->base.local_name.host.slen, |
| 1043 | tls->base.local_name.host.ptr, |
| 1044 | tls->base.local_name.port, |
| 1045 | (int)tls->base.remote_name.host.slen, |
| 1046 | tls->base.remote_name.host.ptr, |
| 1047 | tls->base.remote_name.port)); |
| 1048 | } |
| 1049 | |
| 1050 | /* Done */ |
| 1051 | *p_transport = &tls->base; |
| 1052 | |
| 1053 | return PJ_SUCCESS; |
| 1054 | } |
| 1055 | |
| 1056 | |
| 1057 | /* |
| 1058 | * This callback is called by SSL socket when pending accept() operation |
| 1059 | * has completed. |
| 1060 | */ |
| 1061 | static pj_bool_t on_accept_complete(pj_ssl_sock_t *ssock, |
| 1062 | pj_ssl_sock_t *new_ssock, |
| 1063 | const pj_sockaddr_t *src_addr, |
| 1064 | int src_addr_len) |
| 1065 | { |
| 1066 | struct tls_listener *listener; |
| 1067 | struct tls_transport *tls; |
| 1068 | pj_ssl_sock_info ssl_info; |
| 1069 | char addr[PJ_INET6_ADDRSTRLEN+10]; |
| 1070 | pjsip_tp_state_callback state_cb; |
| 1071 | pj_sockaddr tmp_src_addr; |
| 1072 | pj_bool_t is_shutdown; |
| 1073 | pj_status_t status; |
| 1074 | |
| 1075 | PJ_UNUSED_ARG(src_addr_len); |
| 1076 | |
| 1077 | listener = (struct tls_listener*) pj_ssl_sock_get_user_data(ssock); |
| 1078 | |
| 1079 | PJ_ASSERT_RETURN(new_ssock, PJ_TRUE); |
| 1080 | |
| 1081 | PJ_LOG(4,(listener->factory.obj_name, |
| 1082 | "TLS listener %.*s:%d: got incoming TLS connection " |
| 1083 | "from %s, sock=%d", |
| 1084 | (int)listener->factory.addr_name.host.slen, |
| 1085 | listener->factory.addr_name.host.ptr, |
| 1086 | listener->factory.addr_name.port, |
| 1087 | pj_sockaddr_print(src_addr, addr, sizeof(addr), 3), |
| 1088 | new_ssock)); |
| 1089 | |
| 1090 | /* Retrieve SSL socket info, close the socket if this is failed |
| 1091 | * as the SSL socket info availability is rather critical here. |
| 1092 | */ |
| 1093 | status = pj_ssl_sock_get_info(new_ssock, &ssl_info); |
| 1094 | if (status != PJ_SUCCESS) { |
| 1095 | pj_ssl_sock_close(new_ssock); |
| 1096 | return PJ_TRUE; |
| 1097 | } |
| 1098 | |
| 1099 | /* Copy to larger buffer, just in case */ |
| 1100 | pj_bzero(&tmp_src_addr, sizeof(tmp_src_addr)); |
| 1101 | pj_sockaddr_cp(&tmp_src_addr, src_addr); |
| 1102 | |
| 1103 | /* |
| 1104 | * Incoming connection! |
| 1105 | * Create TLS transport for the new socket. |
| 1106 | */ |
| 1107 | status = tls_create( listener, NULL, new_ssock, PJ_TRUE, |
| 1108 | &listener->factory.local_addr, |
| 1109 | &tmp_src_addr, NULL, &tls); |
| 1110 | |
| 1111 | if (status != PJ_SUCCESS) |
| 1112 | return PJ_TRUE; |
| 1113 | |
| 1114 | /* Set the "pending" SSL socket user data */ |
| 1115 | pj_ssl_sock_set_user_data(new_ssock, tls); |
| 1116 | |
| 1117 | /* Prevent immediate transport destroy as application may access it |
| 1118 | * (getting info, etc) in transport state notification callback. |
| 1119 | */ |
| 1120 | pjsip_transport_add_ref(&tls->base); |
| 1121 | |
| 1122 | /* If there is verification error and verification is mandatory, shutdown |
| 1123 | * and destroy the transport. |
| 1124 | */ |
| 1125 | if (ssl_info.verify_status && listener->tls_setting.verify_client) { |
| 1126 | if (tls->close_reason == PJ_SUCCESS) |
| 1127 | tls->close_reason = PJSIP_TLS_ECERTVERIF; |
| 1128 | pjsip_transport_shutdown(&tls->base); |
| 1129 | } |
| 1130 | |
| 1131 | /* Notify transport state to application */ |
| 1132 | state_cb = pjsip_tpmgr_get_state_cb(tls->base.tpmgr); |
| 1133 | if (state_cb) { |
| 1134 | pjsip_transport_state_info state_info; |
| 1135 | pjsip_tls_state_info tls_info; |
| 1136 | pjsip_transport_state tp_state; |
| 1137 | |
| 1138 | /* Init transport state info */ |
| 1139 | pj_bzero(&tls_info, sizeof(tls_info)); |
| 1140 | pj_bzero(&state_info, sizeof(state_info)); |
| 1141 | tls_info.ssl_sock_info = &ssl_info; |
| 1142 | state_info.ext_info = &tls_info; |
| 1143 | |
| 1144 | /* Set transport state based on verification status */ |
| 1145 | if (ssl_info.verify_status && listener->tls_setting.verify_client) |
| 1146 | { |
| 1147 | tp_state = PJSIP_TP_STATE_DISCONNECTED; |
| 1148 | state_info.status = PJSIP_TLS_ECERTVERIF; |
| 1149 | } else { |
| 1150 | tp_state = PJSIP_TP_STATE_CONNECTED; |
| 1151 | state_info.status = PJ_SUCCESS; |
| 1152 | } |
| 1153 | |
| 1154 | (*state_cb)(&tls->base, tp_state, &state_info); |
| 1155 | } |
| 1156 | |
| 1157 | /* Release transport reference. If transport is shutting down, it may |
| 1158 | * get destroyed here. |
| 1159 | */ |
| 1160 | is_shutdown = tls->base.is_shutdown; |
| 1161 | pjsip_transport_dec_ref(&tls->base); |
| 1162 | if (is_shutdown) |
| 1163 | return PJ_TRUE; |
| 1164 | |
| 1165 | |
| 1166 | status = tls_start_read(tls); |
| 1167 | if (status != PJ_SUCCESS) { |
| 1168 | PJ_LOG(3,(tls->base.obj_name, "New transport cancelled")); |
| 1169 | tls_init_shutdown(tls, status); |
| 1170 | tls_destroy(&tls->base, status); |
| 1171 | } else { |
| 1172 | /* Start keep-alive timer */ |
| 1173 | if (PJSIP_TLS_KEEP_ALIVE_INTERVAL) { |
| 1174 | pj_time_val delay = {PJSIP_TLS_KEEP_ALIVE_INTERVAL, 0}; |
| 1175 | pjsip_endpt_schedule_timer(listener->endpt, |
| 1176 | &tls->ka_timer, |
| 1177 | &delay); |
| 1178 | tls->ka_timer.id = PJ_TRUE; |
| 1179 | pj_gettimeofday(&tls->last_activity); |
| 1180 | } |
| 1181 | } |
| 1182 | |
| 1183 | return PJ_TRUE; |
| 1184 | } |
| 1185 | |
| 1186 | |
| 1187 | /* |
| 1188 | * Callback from ioqueue when packet is sent. |
| 1189 | */ |
| 1190 | static pj_bool_t on_data_sent(pj_ssl_sock_t *ssock, |
| 1191 | pj_ioqueue_op_key_t *op_key, |
| 1192 | pj_ssize_t bytes_sent) |
| 1193 | { |
| 1194 | struct tls_transport *tls = (struct tls_transport*) |
| 1195 | pj_ssl_sock_get_user_data(ssock); |
| 1196 | pjsip_tx_data_op_key *tdata_op_key = (pjsip_tx_data_op_key*)op_key; |
| 1197 | |
| 1198 | /* Note that op_key may be the op_key from keep-alive, thus |
| 1199 | * it will not have tdata etc. |
| 1200 | */ |
| 1201 | |
| 1202 | tdata_op_key->tdata = NULL; |
| 1203 | |
| 1204 | if (tdata_op_key->callback) { |
| 1205 | /* |
| 1206 | * Notify sip_transport.c that packet has been sent. |
| 1207 | */ |
| 1208 | if (bytes_sent == 0) |
| 1209 | bytes_sent = -PJ_RETURN_OS_ERROR(OSERR_ENOTCONN); |
| 1210 | |
| 1211 | tdata_op_key->callback(&tls->base, tdata_op_key->token, bytes_sent); |
| 1212 | |
| 1213 | /* Mark last activity time */ |
| 1214 | pj_gettimeofday(&tls->last_activity); |
| 1215 | |
| 1216 | } |
| 1217 | |
| 1218 | /* Check for error/closure */ |
| 1219 | if (bytes_sent <= 0) { |
| 1220 | pj_status_t status; |
| 1221 | |
| 1222 | PJ_LOG(5,(tls->base.obj_name, "TLS send() error, sent=%d", |
| 1223 | bytes_sent)); |
| 1224 | |
| 1225 | status = (bytes_sent == 0) ? PJ_RETURN_OS_ERROR(OSERR_ENOTCONN) : |
| 1226 | (pj_status_t)-bytes_sent; |
| 1227 | |
| 1228 | tls_init_shutdown(tls, status); |
| 1229 | |
| 1230 | return PJ_FALSE; |
| 1231 | } |
| 1232 | |
| 1233 | return PJ_TRUE; |
| 1234 | } |
| 1235 | |
| 1236 | |
| 1237 | /* |
| 1238 | * This callback is called by transport manager to send SIP message |
| 1239 | */ |
| 1240 | static pj_status_t tls_send_msg(pjsip_transport *transport, |
| 1241 | pjsip_tx_data *tdata, |
| 1242 | const pj_sockaddr_t *rem_addr, |
| 1243 | int addr_len, |
| 1244 | void *token, |
| 1245 | pjsip_transport_callback callback) |
| 1246 | { |
| 1247 | struct tls_transport *tls = (struct tls_transport*)transport; |
| 1248 | pj_ssize_t size; |
| 1249 | pj_bool_t delayed = PJ_FALSE; |
| 1250 | pj_status_t status = PJ_SUCCESS; |
| 1251 | |
| 1252 | /* Sanity check */ |
| 1253 | PJ_ASSERT_RETURN(transport && tdata, PJ_EINVAL); |
| 1254 | |
| 1255 | /* Check that there's no pending operation associated with the tdata */ |
| 1256 | PJ_ASSERT_RETURN(tdata->op_key.tdata == NULL, PJSIP_EPENDINGTX); |
| 1257 | |
| 1258 | /* Check the address is supported */ |
| 1259 | PJ_ASSERT_RETURN(rem_addr && (addr_len==sizeof(pj_sockaddr_in) || |
| 1260 | addr_len==sizeof(pj_sockaddr_in6)), |
| 1261 | PJ_EINVAL); |
| 1262 | |
| 1263 | /* Init op key. */ |
| 1264 | tdata->op_key.tdata = tdata; |
| 1265 | tdata->op_key.token = token; |
| 1266 | tdata->op_key.callback = callback; |
| 1267 | |
| 1268 | /* If asynchronous connect() has not completed yet, just put the |
| 1269 | * transmit data in the pending transmission list since we can not |
| 1270 | * use the socket yet. |
| 1271 | */ |
| 1272 | if (tls->has_pending_connect) { |
| 1273 | |
| 1274 | /* |
| 1275 | * Looks like connect() is still in progress. Check again (this time |
| 1276 | * with holding the lock) to be sure. |
| 1277 | */ |
| 1278 | pj_lock_acquire(tls->base.lock); |
| 1279 | |
| 1280 | if (tls->has_pending_connect) { |
| 1281 | struct delayed_tdata *delayed_tdata; |
| 1282 | |
| 1283 | /* |
| 1284 | * connect() is still in progress. Put the transmit data to |
| 1285 | * the delayed list. |
| 1286 | * Starting from #1583 (https://trac.pjsip.org/repos/ticket/1583), |
| 1287 | * we also add timeout value for the transmit data. When the |
| 1288 | * connect() is completed, the timeout value will be checked to |
| 1289 | * determine whether the transmit data needs to be sent. |
| 1290 | */ |
| 1291 | delayed_tdata = PJ_POOL_ZALLOC_T(tdata->pool, |
| 1292 | struct delayed_tdata); |
| 1293 | delayed_tdata->tdata_op_key = &tdata->op_key; |
| 1294 | if (tdata->msg && tdata->msg->type == PJSIP_REQUEST_MSG) { |
| 1295 | pj_gettickcount(&delayed_tdata->timeout); |
| 1296 | delayed_tdata->timeout.msec += pjsip_cfg()->tsx.td; |
| 1297 | pj_time_val_normalize(&delayed_tdata->timeout); |
| 1298 | } |
| 1299 | |
| 1300 | pj_list_push_back(&tls->delayed_list, delayed_tdata); |
| 1301 | status = PJ_EPENDING; |
| 1302 | |
| 1303 | /* Prevent pj_ioqueue_send() to be called below */ |
| 1304 | delayed = PJ_TRUE; |
| 1305 | } |
| 1306 | |
| 1307 | pj_lock_release(tls->base.lock); |
| 1308 | } |
| 1309 | |
| 1310 | if (!delayed) { |
| 1311 | /* |
| 1312 | * Transport is ready to go. Send the packet to ioqueue to be |
| 1313 | * sent asynchronously. |
| 1314 | */ |
| 1315 | size = tdata->buf.cur - tdata->buf.start; |
| 1316 | status = pj_ssl_sock_send(tls->ssock, |
| 1317 | (pj_ioqueue_op_key_t*)&tdata->op_key, |
| 1318 | tdata->buf.start, &size, 0); |
| 1319 | |
| 1320 | if (status != PJ_EPENDING) { |
| 1321 | /* Not pending (could be immediate success or error) */ |
| 1322 | tdata->op_key.tdata = NULL; |
| 1323 | |
| 1324 | /* Shutdown transport on closure/errors */ |
| 1325 | if (size <= 0) { |
| 1326 | |
| 1327 | PJ_LOG(5,(tls->base.obj_name, "TLS send() error, sent=%d", |
| 1328 | size)); |
| 1329 | |
| 1330 | if (status == PJ_SUCCESS) |
| 1331 | status = PJ_RETURN_OS_ERROR(OSERR_ENOTCONN); |
| 1332 | |
| 1333 | tls_init_shutdown(tls, status); |
| 1334 | } |
| 1335 | } |
| 1336 | } |
| 1337 | |
| 1338 | return status; |
| 1339 | } |
| 1340 | |
| 1341 | |
| 1342 | /* |
| 1343 | * This callback is called by transport manager to shutdown transport. |
| 1344 | */ |
| 1345 | static pj_status_t tls_shutdown(pjsip_transport *transport) |
| 1346 | { |
| 1347 | struct tls_transport *tls = (struct tls_transport*)transport; |
| 1348 | |
| 1349 | /* Stop keep-alive timer. */ |
| 1350 | if (tls->ka_timer.id) { |
| 1351 | pjsip_endpt_cancel_timer(tls->base.endpt, &tls->ka_timer); |
| 1352 | tls->ka_timer.id = PJ_FALSE; |
| 1353 | } |
| 1354 | |
| 1355 | return PJ_SUCCESS; |
| 1356 | } |
| 1357 | |
| 1358 | |
| 1359 | /* |
| 1360 | * Callback from ioqueue that an incoming data is received from the socket. |
| 1361 | */ |
| 1362 | static pj_bool_t on_data_read(pj_ssl_sock_t *ssock, |
| 1363 | void *data, |
| 1364 | pj_size_t size, |
| 1365 | pj_status_t status, |
| 1366 | pj_size_t *remainder) |
| 1367 | { |
| 1368 | enum { MAX_IMMEDIATE_PACKET = 10 }; |
| 1369 | struct tls_transport *tls; |
| 1370 | pjsip_rx_data *rdata; |
| 1371 | |
| 1372 | PJ_UNUSED_ARG(data); |
| 1373 | |
| 1374 | tls = (struct tls_transport*) pj_ssl_sock_get_user_data(ssock); |
| 1375 | rdata = &tls->rdata; |
| 1376 | |
| 1377 | /* Don't do anything if transport is closing. */ |
| 1378 | if (tls->is_closing) { |
| 1379 | tls->is_closing++; |
| 1380 | return PJ_FALSE; |
| 1381 | } |
| 1382 | |
| 1383 | /* Houston, we have packet! Report the packet to transport manager |
| 1384 | * to be parsed. |
| 1385 | */ |
| 1386 | if (status == PJ_SUCCESS) { |
| 1387 | pj_size_t size_eaten; |
| 1388 | |
| 1389 | /* Mark this as an activity */ |
| 1390 | pj_gettimeofday(&tls->last_activity); |
| 1391 | |
| 1392 | pj_assert((void*)rdata->pkt_info.packet == data); |
| 1393 | |
| 1394 | /* Init pkt_info part. */ |
| 1395 | rdata->pkt_info.len = size; |
| 1396 | rdata->pkt_info.zero = 0; |
| 1397 | pj_gettimeofday(&rdata->pkt_info.timestamp); |
| 1398 | |
| 1399 | /* Report to transport manager. |
| 1400 | * The transport manager will tell us how many bytes of the packet |
| 1401 | * have been processed (as valid SIP message). |
| 1402 | */ |
| 1403 | size_eaten = |
| 1404 | pjsip_tpmgr_receive_packet(rdata->tp_info.transport->tpmgr, |
| 1405 | rdata); |
| 1406 | |
| 1407 | pj_assert(size_eaten <= (pj_size_t)rdata->pkt_info.len); |
| 1408 | |
| 1409 | /* Move unprocessed data to the front of the buffer */ |
| 1410 | *remainder = size - size_eaten; |
| 1411 | if (*remainder > 0 && *remainder != size) { |
| 1412 | pj_memmove(rdata->pkt_info.packet, |
| 1413 | rdata->pkt_info.packet + size_eaten, |
| 1414 | *remainder); |
| 1415 | } |
| 1416 | |
| 1417 | } else { |
| 1418 | |
| 1419 | /* Transport is closed */ |
| 1420 | PJ_LOG(4,(tls->base.obj_name, "TLS connection closed")); |
| 1421 | |
| 1422 | tls_init_shutdown(tls, status); |
| 1423 | |
| 1424 | return PJ_FALSE; |
| 1425 | |
| 1426 | } |
| 1427 | |
| 1428 | /* Reset pool. */ |
| 1429 | pj_pool_reset(rdata->tp_info.pool); |
| 1430 | |
| 1431 | return PJ_TRUE; |
| 1432 | } |
| 1433 | |
| 1434 | |
| 1435 | /* |
| 1436 | * Callback from ioqueue when asynchronous connect() operation completes. |
| 1437 | */ |
| 1438 | static pj_bool_t on_connect_complete(pj_ssl_sock_t *ssock, |
| 1439 | pj_status_t status) |
| 1440 | { |
| 1441 | struct tls_transport *tls; |
| 1442 | pj_ssl_sock_info ssl_info; |
| 1443 | pj_sockaddr addr, *tp_addr; |
| 1444 | pjsip_tp_state_callback state_cb; |
| 1445 | pj_bool_t is_shutdown; |
| 1446 | |
| 1447 | tls = (struct tls_transport*) pj_ssl_sock_get_user_data(ssock); |
| 1448 | |
| 1449 | /* Check connect() status */ |
| 1450 | if (status != PJ_SUCCESS) { |
| 1451 | |
| 1452 | tls_perror(tls->base.obj_name, "TLS connect() error", status); |
| 1453 | |
| 1454 | /* Cancel all delayed transmits */ |
| 1455 | while (!pj_list_empty(&tls->delayed_list)) { |
| 1456 | struct delayed_tdata *pending_tx; |
| 1457 | pj_ioqueue_op_key_t *op_key; |
| 1458 | |
| 1459 | pending_tx = tls->delayed_list.next; |
| 1460 | pj_list_erase(pending_tx); |
| 1461 | |
| 1462 | op_key = (pj_ioqueue_op_key_t*)pending_tx->tdata_op_key; |
| 1463 | |
| 1464 | on_data_sent(tls->ssock, op_key, -status); |
| 1465 | } |
| 1466 | |
| 1467 | goto on_error; |
| 1468 | } |
| 1469 | |
| 1470 | /* Retrieve SSL socket info, shutdown the transport if this is failed |
| 1471 | * as the SSL socket info availability is rather critical here. |
| 1472 | */ |
| 1473 | status = pj_ssl_sock_get_info(tls->ssock, &ssl_info); |
| 1474 | if (status != PJ_SUCCESS) |
| 1475 | goto on_error; |
| 1476 | |
| 1477 | /* Update (again) local address, just in case local address currently |
| 1478 | * set is different now that the socket is connected (could happen |
| 1479 | * on some systems, like old Win32 probably?). |
| 1480 | */ |
| 1481 | tp_addr = &tls->base.local_addr; |
| 1482 | pj_sockaddr_cp((pj_sockaddr_t*)&addr, |
| 1483 | (pj_sockaddr_t*)&ssl_info.local_addr); |
| 1484 | if (pj_sockaddr_cmp(tp_addr, &addr) != 0) { |
| 1485 | pj_sockaddr_cp(tp_addr, &addr); |
| 1486 | sockaddr_to_host_port(tls->base.pool, &tls->base.local_name, |
| 1487 | tp_addr); |
| 1488 | } |
| 1489 | |
| 1490 | /* Server identity verification based on server certificate. */ |
| 1491 | if (ssl_info.remote_cert_info->version) { |
| 1492 | pj_str_t *remote_name; |
| 1493 | pj_ssl_cert_info *serv_cert = ssl_info.remote_cert_info; |
| 1494 | pj_bool_t matched = PJ_FALSE; |
| 1495 | unsigned i; |
| 1496 | |
| 1497 | /* Remote name may be hostname or IP address */ |
| 1498 | if (tls->remote_name.slen) |
| 1499 | remote_name = &tls->remote_name; |
| 1500 | else |
| 1501 | remote_name = &tls->base.remote_name.host; |
| 1502 | |
| 1503 | /* Start matching remote name with SubjectAltName fields of |
| 1504 | * server certificate. |
| 1505 | */ |
| 1506 | for (i = 0; i < serv_cert->subj_alt_name.cnt && !matched; ++i) { |
| 1507 | pj_str_t *cert_name = &serv_cert->subj_alt_name.entry[i].name; |
| 1508 | |
| 1509 | switch (serv_cert->subj_alt_name.entry[i].type) { |
| 1510 | case PJ_SSL_CERT_NAME_DNS: |
| 1511 | case PJ_SSL_CERT_NAME_IP: |
| 1512 | matched = !pj_stricmp(remote_name, cert_name); |
| 1513 | break; |
| 1514 | case PJ_SSL_CERT_NAME_URI: |
| 1515 | if (pj_strnicmp2(cert_name, "sip:", 4) == 0 || |
| 1516 | pj_strnicmp2(cert_name, "sips:", 5) == 0) |
| 1517 | { |
| 1518 | pj_str_t host_part; |
| 1519 | char *p; |
| 1520 | |
| 1521 | p = pj_strchr(cert_name, ':') + 1; |
| 1522 | pj_strset(&host_part, p, cert_name->slen - |
| 1523 | (p - cert_name->ptr)); |
| 1524 | matched = !pj_stricmp(remote_name, &host_part); |
| 1525 | } |
| 1526 | break; |
| 1527 | default: |
| 1528 | break; |
| 1529 | } |
| 1530 | } |
| 1531 | |
| 1532 | /* When still not matched or no SubjectAltName fields in server |
| 1533 | * certificate, try with Common Name of Subject field. |
| 1534 | */ |
| 1535 | if (!matched) { |
| 1536 | matched = !pj_stricmp(remote_name, &serv_cert->subject.cn); |
| 1537 | } |
| 1538 | |
| 1539 | if (!matched) |
| 1540 | ssl_info.verify_status |= PJ_SSL_CERT_EIDENTITY_NOT_MATCH; |
| 1541 | } |
| 1542 | |
| 1543 | /* Prevent immediate transport destroy as application may access it |
| 1544 | * (getting info, etc) in transport state notification callback. |
| 1545 | */ |
| 1546 | pjsip_transport_add_ref(&tls->base); |
| 1547 | |
| 1548 | /* If there is verification error and verification is mandatory, shutdown |
| 1549 | * and destroy the transport. |
| 1550 | */ |
| 1551 | if (ssl_info.verify_status && tls->verify_server) { |
| 1552 | if (tls->close_reason == PJ_SUCCESS) |
| 1553 | tls->close_reason = PJSIP_TLS_ECERTVERIF; |
| 1554 | pjsip_transport_shutdown(&tls->base); |
| 1555 | } |
| 1556 | |
| 1557 | /* Notify transport state to application */ |
| 1558 | state_cb = pjsip_tpmgr_get_state_cb(tls->base.tpmgr); |
| 1559 | if (state_cb) { |
| 1560 | pjsip_transport_state_info state_info; |
| 1561 | pjsip_tls_state_info tls_info; |
| 1562 | pjsip_transport_state tp_state; |
| 1563 | |
| 1564 | /* Init transport state info */ |
| 1565 | pj_bzero(&state_info, sizeof(state_info)); |
| 1566 | pj_bzero(&tls_info, sizeof(tls_info)); |
| 1567 | state_info.ext_info = &tls_info; |
| 1568 | tls_info.ssl_sock_info = &ssl_info; |
| 1569 | |
| 1570 | /* Set transport state based on verification status */ |
| 1571 | if (ssl_info.verify_status && tls->verify_server) |
| 1572 | { |
| 1573 | tp_state = PJSIP_TP_STATE_DISCONNECTED; |
| 1574 | state_info.status = PJSIP_TLS_ECERTVERIF; |
| 1575 | } else { |
| 1576 | tp_state = PJSIP_TP_STATE_CONNECTED; |
| 1577 | state_info.status = PJ_SUCCESS; |
| 1578 | } |
| 1579 | |
| 1580 | (*state_cb)(&tls->base, tp_state, &state_info); |
| 1581 | } |
| 1582 | |
| 1583 | /* Release transport reference. If transport is shutting down, it may |
| 1584 | * get destroyed here. |
| 1585 | */ |
| 1586 | is_shutdown = tls->base.is_shutdown; |
| 1587 | pjsip_transport_dec_ref(&tls->base); |
| 1588 | if (is_shutdown) { |
| 1589 | status = tls->close_reason; |
| 1590 | tls_perror(tls->base.obj_name, "TLS connect() error", status); |
| 1591 | |
| 1592 | /* Cancel all delayed transmits */ |
| 1593 | while (!pj_list_empty(&tls->delayed_list)) { |
| 1594 | struct delayed_tdata *pending_tx; |
| 1595 | pj_ioqueue_op_key_t *op_key; |
| 1596 | |
| 1597 | pending_tx = tls->delayed_list.next; |
| 1598 | pj_list_erase(pending_tx); |
| 1599 | |
| 1600 | op_key = (pj_ioqueue_op_key_t*)pending_tx->tdata_op_key; |
| 1601 | |
| 1602 | on_data_sent(tls->ssock, op_key, -status); |
| 1603 | } |
| 1604 | |
| 1605 | return PJ_FALSE; |
| 1606 | } |
| 1607 | |
| 1608 | |
| 1609 | /* Mark that pending connect() operation has completed. */ |
| 1610 | tls->has_pending_connect = PJ_FALSE; |
| 1611 | |
| 1612 | PJ_LOG(4,(tls->base.obj_name, |
| 1613 | "TLS transport %.*s:%d is connected to %.*s:%d", |
| 1614 | (int)tls->base.local_name.host.slen, |
| 1615 | tls->base.local_name.host.ptr, |
| 1616 | tls->base.local_name.port, |
| 1617 | (int)tls->base.remote_name.host.slen, |
| 1618 | tls->base.remote_name.host.ptr, |
| 1619 | tls->base.remote_name.port)); |
| 1620 | |
| 1621 | /* Start pending read */ |
| 1622 | status = tls_start_read(tls); |
| 1623 | if (status != PJ_SUCCESS) |
| 1624 | goto on_error; |
| 1625 | |
| 1626 | /* Flush all pending send operations */ |
| 1627 | tls_flush_pending_tx(tls); |
| 1628 | |
| 1629 | /* Start keep-alive timer */ |
| 1630 | if (PJSIP_TLS_KEEP_ALIVE_INTERVAL) { |
| 1631 | pj_time_val delay = { PJSIP_TLS_KEEP_ALIVE_INTERVAL, 0 }; |
| 1632 | pjsip_endpt_schedule_timer(tls->base.endpt, &tls->ka_timer, |
| 1633 | &delay); |
| 1634 | tls->ka_timer.id = PJ_TRUE; |
| 1635 | pj_gettimeofday(&tls->last_activity); |
| 1636 | } |
| 1637 | |
| 1638 | return PJ_TRUE; |
| 1639 | |
| 1640 | on_error: |
| 1641 | tls_init_shutdown(tls, status); |
| 1642 | |
| 1643 | return PJ_FALSE; |
| 1644 | } |
| 1645 | |
| 1646 | |
| 1647 | /* Transport keep-alive timer callback */ |
| 1648 | static void tls_keep_alive_timer(pj_timer_heap_t *th, pj_timer_entry *e) |
| 1649 | { |
| 1650 | struct tls_transport *tls = (struct tls_transport*) e->user_data; |
| 1651 | pj_time_val delay; |
| 1652 | pj_time_val now; |
| 1653 | pj_ssize_t size; |
| 1654 | pj_status_t status; |
| 1655 | |
| 1656 | PJ_UNUSED_ARG(th); |
| 1657 | |
| 1658 | tls->ka_timer.id = PJ_TRUE; |
| 1659 | |
| 1660 | pj_gettimeofday(&now); |
| 1661 | PJ_TIME_VAL_SUB(now, tls->last_activity); |
| 1662 | |
| 1663 | if (now.sec > 0 && now.sec < PJSIP_TLS_KEEP_ALIVE_INTERVAL) { |
| 1664 | /* There has been activity, so don't send keep-alive */ |
| 1665 | delay.sec = PJSIP_TLS_KEEP_ALIVE_INTERVAL - now.sec; |
| 1666 | delay.msec = 0; |
| 1667 | |
| 1668 | pjsip_endpt_schedule_timer(tls->base.endpt, &tls->ka_timer, |
| 1669 | &delay); |
| 1670 | tls->ka_timer.id = PJ_TRUE; |
| 1671 | return; |
| 1672 | } |
| 1673 | |
| 1674 | PJ_LOG(5,(tls->base.obj_name, "Sending %d byte(s) keep-alive to %.*s:%d", |
| 1675 | (int)tls->ka_pkt.slen, (int)tls->base.remote_name.host.slen, |
| 1676 | tls->base.remote_name.host.ptr, |
| 1677 | tls->base.remote_name.port)); |
| 1678 | |
| 1679 | /* Send the data */ |
| 1680 | size = tls->ka_pkt.slen; |
| 1681 | status = pj_ssl_sock_send(tls->ssock, &tls->ka_op_key.key, |
| 1682 | tls->ka_pkt.ptr, &size, 0); |
| 1683 | |
| 1684 | if (status != PJ_SUCCESS && status != PJ_EPENDING) { |
| 1685 | tls_perror(tls->base.obj_name, |
| 1686 | "Error sending keep-alive packet", status); |
| 1687 | |
| 1688 | tls_init_shutdown(tls, status); |
| 1689 | return; |
| 1690 | } |
| 1691 | |
| 1692 | /* Register next keep-alive */ |
| 1693 | delay.sec = PJSIP_TLS_KEEP_ALIVE_INTERVAL; |
| 1694 | delay.msec = 0; |
| 1695 | |
| 1696 | pjsip_endpt_schedule_timer(tls->base.endpt, &tls->ka_timer, |
| 1697 | &delay); |
| 1698 | tls->ka_timer.id = PJ_TRUE; |
| 1699 | } |
| 1700 | |
| 1701 | #endif /* PJSIP_HAS_TLS_TRANSPORT */ |