Tristan Matthews | 0a329cc | 2013-07-17 13:20:14 -0400 | [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 | #include <pj/ssl_sock.h> |
| 20 | #include <pj/activesock.h> |
| 21 | #include <pj/compat/socket.h> |
| 22 | #include <pj/assert.h> |
| 23 | #include <pj/errno.h> |
| 24 | #include <pj/list.h> |
| 25 | #include <pj/lock.h> |
| 26 | #include <pj/log.h> |
| 27 | #include <pj/math.h> |
| 28 | #include <pj/os.h> |
| 29 | #include <pj/pool.h> |
| 30 | #include <pj/string.h> |
| 31 | #include <pj/timer.h> |
| 32 | |
| 33 | |
| 34 | /* Only build when PJ_HAS_SSL_SOCK is enabled */ |
| 35 | #if defined(PJ_HAS_SSL_SOCK) && PJ_HAS_SSL_SOCK!=0 |
| 36 | |
| 37 | #define THIS_FILE "ssl_sock_ossl.c" |
| 38 | |
| 39 | /* Workaround for ticket #985 */ |
| 40 | #define DELAYED_CLOSE_TIMEOUT 200 |
| 41 | |
| 42 | /* Maximum ciphers */ |
| 43 | #define MAX_CIPHERS 100 |
| 44 | |
| 45 | /* |
| 46 | * Include OpenSSL headers |
| 47 | */ |
| 48 | #include <openssl/bio.h> |
| 49 | #include <openssl/ssl.h> |
| 50 | #include <openssl/err.h> |
| 51 | #include <openssl/x509v3.h> |
| 52 | |
| 53 | |
| 54 | #ifdef _MSC_VER |
| 55 | # pragma comment( lib, "libeay32") |
| 56 | # pragma comment( lib, "ssleay32") |
| 57 | #endif |
| 58 | |
| 59 | |
| 60 | /* |
| 61 | * SSL/TLS state enumeration. |
| 62 | */ |
| 63 | enum ssl_state { |
| 64 | SSL_STATE_NULL, |
| 65 | SSL_STATE_HANDSHAKING, |
| 66 | SSL_STATE_ESTABLISHED |
| 67 | }; |
| 68 | |
| 69 | /* |
| 70 | * Internal timer types. |
| 71 | */ |
| 72 | enum timer_id |
| 73 | { |
| 74 | TIMER_NONE, |
| 75 | TIMER_HANDSHAKE_TIMEOUT, |
| 76 | TIMER_CLOSE |
| 77 | }; |
| 78 | |
| 79 | /* |
| 80 | * Structure of SSL socket read buffer. |
| 81 | */ |
| 82 | typedef struct read_data_t |
| 83 | { |
| 84 | void *data; |
| 85 | pj_size_t len; |
| 86 | } read_data_t; |
| 87 | |
| 88 | /* |
| 89 | * Get the offset of pointer to read-buffer of SSL socket from read-buffer |
| 90 | * of active socket. Note that both SSL socket and active socket employ |
| 91 | * different but correlated read-buffers (as much as async_cnt for each), |
| 92 | * and to make it easier/faster to find corresponding SSL socket's read-buffer |
| 93 | * from known active socket's read-buffer, the pointer of corresponding |
| 94 | * SSL socket's read-buffer is stored right after the end of active socket's |
| 95 | * read-buffer. |
| 96 | */ |
| 97 | #define OFFSET_OF_READ_DATA_PTR(ssock, asock_rbuf) \ |
| 98 | (read_data_t**) \ |
| 99 | ((pj_int8_t*)(asock_rbuf) + \ |
| 100 | ssock->param.read_buffer_size) |
| 101 | |
| 102 | /* |
| 103 | * Structure of SSL socket write data. |
| 104 | */ |
| 105 | typedef struct write_data_t { |
| 106 | PJ_DECL_LIST_MEMBER(struct write_data_t); |
| 107 | pj_ioqueue_op_key_t key; |
| 108 | pj_size_t record_len; |
| 109 | pj_ioqueue_op_key_t *app_key; |
| 110 | pj_size_t plain_data_len; |
| 111 | pj_size_t data_len; |
| 112 | unsigned flags; |
| 113 | union { |
| 114 | char content[1]; |
| 115 | const char *ptr; |
| 116 | } data; |
| 117 | } write_data_t; |
| 118 | |
| 119 | /* |
| 120 | * Structure of SSL socket write buffer (circular buffer). |
| 121 | */ |
| 122 | typedef struct send_buf_t { |
| 123 | char *buf; |
| 124 | pj_size_t max_len; |
| 125 | char *start; |
| 126 | pj_size_t len; |
| 127 | } send_buf_t; |
| 128 | |
| 129 | /* |
| 130 | * Secure socket structure definition. |
| 131 | */ |
| 132 | struct pj_ssl_sock_t |
| 133 | { |
| 134 | pj_pool_t *pool; |
| 135 | pj_ssl_sock_t *parent; |
| 136 | pj_ssl_sock_param param; |
| 137 | pj_ssl_cert_t *cert; |
| 138 | |
| 139 | pj_ssl_cert_info local_cert_info; |
| 140 | pj_ssl_cert_info remote_cert_info; |
| 141 | |
| 142 | pj_bool_t is_server; |
| 143 | enum ssl_state ssl_state; |
| 144 | pj_ioqueue_op_key_t handshake_op_key; |
| 145 | pj_timer_entry timer; |
| 146 | pj_status_t verify_status; |
| 147 | |
| 148 | unsigned long last_err; |
| 149 | |
| 150 | pj_sock_t sock; |
| 151 | pj_activesock_t *asock; |
| 152 | |
| 153 | pj_sockaddr local_addr; |
| 154 | pj_sockaddr rem_addr; |
| 155 | int addr_len; |
| 156 | |
| 157 | pj_bool_t read_started; |
| 158 | pj_size_t read_size; |
| 159 | pj_uint32_t read_flags; |
| 160 | void **asock_rbuf; |
| 161 | read_data_t *ssock_rbuf; |
| 162 | |
| 163 | write_data_t write_pending;/* list of pending write to OpenSSL */ |
| 164 | write_data_t write_pending_empty; /* cache for write_pending */ |
| 165 | pj_bool_t flushing_write_pend; /* flag of flushing is ongoing*/ |
| 166 | send_buf_t send_buf; |
| 167 | write_data_t send_pending; /* list of pending write to network */ |
| 168 | pj_lock_t *write_mutex; /* protect write BIO and send_buf */ |
| 169 | |
| 170 | SSL_CTX *ossl_ctx; |
| 171 | SSL *ossl_ssl; |
| 172 | BIO *ossl_rbio; |
| 173 | BIO *ossl_wbio; |
| 174 | }; |
| 175 | |
| 176 | |
| 177 | /* |
| 178 | * Certificate/credential structure definition. |
| 179 | */ |
| 180 | struct pj_ssl_cert_t |
| 181 | { |
| 182 | pj_str_t CA_file; |
| 183 | pj_str_t cert_file; |
| 184 | pj_str_t privkey_file; |
| 185 | pj_str_t privkey_pass; |
| 186 | }; |
| 187 | |
| 188 | |
| 189 | static write_data_t* alloc_send_data(pj_ssl_sock_t *ssock, pj_size_t len); |
| 190 | static void free_send_data(pj_ssl_sock_t *ssock, write_data_t *wdata); |
| 191 | static pj_status_t flush_delayed_send(pj_ssl_sock_t *ssock); |
| 192 | |
| 193 | /* |
| 194 | ******************************************************************* |
| 195 | * Static/internal functions. |
| 196 | ******************************************************************* |
| 197 | */ |
| 198 | |
| 199 | /** |
| 200 | * Mapping from OpenSSL error codes to pjlib error space. |
| 201 | */ |
| 202 | |
| 203 | #define PJ_SSL_ERRNO_START (PJ_ERRNO_START_USER + \ |
| 204 | PJ_ERRNO_SPACE_SIZE*6) |
| 205 | |
| 206 | #define PJ_SSL_ERRNO_SPACE_SIZE PJ_ERRNO_SPACE_SIZE |
| 207 | |
| 208 | /* Expected maximum value of reason component in OpenSSL error code */ |
| 209 | #define MAX_OSSL_ERR_REASON 1200 |
| 210 | |
| 211 | static pj_status_t STATUS_FROM_SSL_ERR(pj_ssl_sock_t *ssock, |
| 212 | unsigned long err) |
| 213 | { |
| 214 | pj_status_t status; |
| 215 | |
| 216 | /* General SSL error, dig more from OpenSSL error queue */ |
| 217 | if (err == SSL_ERROR_SSL) |
| 218 | err = ERR_get_error(); |
| 219 | |
| 220 | /* OpenSSL error range is much wider than PJLIB errno space, so |
| 221 | * if it exceeds the space, only the error reason will be kept. |
| 222 | * Note that the last native error will be kept as is and can be |
| 223 | * retrieved via SSL socket info. |
| 224 | */ |
| 225 | status = ERR_GET_LIB(err)*MAX_OSSL_ERR_REASON + ERR_GET_REASON(err); |
| 226 | if (status > PJ_SSL_ERRNO_SPACE_SIZE) |
| 227 | status = ERR_GET_REASON(err); |
| 228 | |
| 229 | status += PJ_SSL_ERRNO_START; |
| 230 | ssock->last_err = err; |
| 231 | return status; |
| 232 | } |
| 233 | |
| 234 | static pj_status_t GET_SSL_STATUS(pj_ssl_sock_t *ssock) |
| 235 | { |
| 236 | return STATUS_FROM_SSL_ERR(ssock, ERR_get_error()); |
| 237 | } |
| 238 | |
| 239 | |
| 240 | /* |
| 241 | * Get error string of OpenSSL. |
| 242 | */ |
| 243 | static pj_str_t ssl_strerror(pj_status_t status, |
| 244 | char *buf, pj_size_t bufsize) |
| 245 | { |
| 246 | pj_str_t errstr; |
| 247 | unsigned long ssl_err = status; |
| 248 | |
| 249 | if (ssl_err) { |
| 250 | unsigned long l, r; |
| 251 | ssl_err -= PJ_SSL_ERRNO_START; |
| 252 | l = ssl_err / MAX_OSSL_ERR_REASON; |
| 253 | r = ssl_err % MAX_OSSL_ERR_REASON; |
| 254 | ssl_err = ERR_PACK(l, 0, r); |
| 255 | } |
| 256 | |
| 257 | #if defined(PJ_HAS_ERROR_STRING) && (PJ_HAS_ERROR_STRING != 0) |
| 258 | |
| 259 | { |
| 260 | const char *tmp = NULL; |
| 261 | tmp = ERR_reason_error_string(ssl_err); |
| 262 | if (tmp) { |
| 263 | pj_ansi_strncpy(buf, tmp, bufsize); |
| 264 | errstr = pj_str(buf); |
| 265 | return errstr; |
| 266 | } |
| 267 | } |
| 268 | |
| 269 | #endif /* PJ_HAS_ERROR_STRING */ |
| 270 | |
| 271 | errstr.ptr = buf; |
| 272 | errstr.slen = pj_ansi_snprintf(buf, bufsize, |
| 273 | "Unknown OpenSSL error %lu", |
| 274 | ssl_err); |
| 275 | |
| 276 | return errstr; |
| 277 | } |
| 278 | |
| 279 | |
| 280 | /* OpenSSL library initialization counter */ |
| 281 | static int openssl_init_count; |
| 282 | |
| 283 | /* OpenSSL available ciphers */ |
| 284 | static unsigned openssl_cipher_num; |
| 285 | static struct openssl_ciphers_t { |
| 286 | pj_ssl_cipher id; |
| 287 | const char *name; |
| 288 | } openssl_ciphers[MAX_CIPHERS]; |
| 289 | |
| 290 | /* OpenSSL application data index */ |
| 291 | static int sslsock_idx; |
| 292 | |
| 293 | |
| 294 | /* Initialize OpenSSL */ |
| 295 | static pj_status_t init_openssl(void) |
| 296 | { |
| 297 | pj_status_t status; |
| 298 | |
| 299 | if (openssl_init_count) |
| 300 | return PJ_SUCCESS; |
| 301 | |
| 302 | openssl_init_count = 1; |
| 303 | |
| 304 | /* Register error subsystem */ |
| 305 | status = pj_register_strerror(PJ_SSL_ERRNO_START, |
| 306 | PJ_SSL_ERRNO_SPACE_SIZE, |
| 307 | &ssl_strerror); |
| 308 | pj_assert(status == PJ_SUCCESS); |
| 309 | |
| 310 | /* Init OpenSSL lib */ |
| 311 | SSL_library_init(); |
| 312 | SSL_load_error_strings(); |
| 313 | OpenSSL_add_all_algorithms(); |
| 314 | |
| 315 | /* Init available ciphers */ |
| 316 | if (openssl_cipher_num == 0) { |
| 317 | SSL_METHOD *meth = NULL; |
| 318 | SSL_CTX *ctx; |
| 319 | SSL *ssl; |
| 320 | STACK_OF(SSL_CIPHER) *sk_cipher; |
| 321 | unsigned i, n; |
| 322 | |
| 323 | meth = (SSL_METHOD*)SSLv23_server_method(); |
| 324 | if (!meth) |
| 325 | meth = (SSL_METHOD*)TLSv1_server_method(); |
| 326 | if (!meth) |
| 327 | meth = (SSL_METHOD*)SSLv3_server_method(); |
| 328 | #ifndef OPENSSL_NO_SSL2 |
| 329 | if (!meth) |
| 330 | meth = (SSL_METHOD*)SSLv2_server_method(); |
| 331 | #endif |
| 332 | pj_assert(meth); |
| 333 | |
| 334 | ctx=SSL_CTX_new(meth); |
| 335 | SSL_CTX_set_cipher_list(ctx, "ALL"); |
| 336 | |
| 337 | ssl = SSL_new(ctx); |
| 338 | sk_cipher = SSL_get_ciphers(ssl); |
| 339 | |
| 340 | n = sk_SSL_CIPHER_num(sk_cipher); |
| 341 | if (n > PJ_ARRAY_SIZE(openssl_ciphers)) |
| 342 | n = PJ_ARRAY_SIZE(openssl_ciphers); |
| 343 | |
| 344 | for (i = 0; i < n; ++i) { |
| 345 | SSL_CIPHER *c; |
| 346 | c = sk_SSL_CIPHER_value(sk_cipher,i); |
| 347 | openssl_ciphers[i].id = (pj_ssl_cipher) |
| 348 | (pj_uint32_t)c->id & 0x00FFFFFF; |
| 349 | openssl_ciphers[i].name = SSL_CIPHER_get_name(c); |
| 350 | } |
| 351 | |
| 352 | SSL_free(ssl); |
| 353 | SSL_CTX_free(ctx); |
| 354 | |
| 355 | openssl_cipher_num = n; |
| 356 | } |
| 357 | |
| 358 | /* Create OpenSSL application data index for SSL socket */ |
| 359 | sslsock_idx = SSL_get_ex_new_index(0, "SSL socket", NULL, NULL, NULL); |
| 360 | |
| 361 | return PJ_SUCCESS; |
| 362 | } |
| 363 | |
| 364 | |
| 365 | /* Shutdown OpenSSL */ |
| 366 | static void shutdown_openssl(void) |
| 367 | { |
| 368 | PJ_UNUSED_ARG(openssl_init_count); |
| 369 | } |
| 370 | |
| 371 | |
| 372 | /* SSL password callback. */ |
| 373 | static int password_cb(char *buf, int num, int rwflag, void *user_data) |
| 374 | { |
| 375 | pj_ssl_cert_t *cert = (pj_ssl_cert_t*) user_data; |
| 376 | |
| 377 | PJ_UNUSED_ARG(rwflag); |
| 378 | |
| 379 | if(num < cert->privkey_pass.slen) |
| 380 | return 0; |
| 381 | |
| 382 | pj_memcpy(buf, cert->privkey_pass.ptr, cert->privkey_pass.slen); |
| 383 | return (int)cert->privkey_pass.slen; |
| 384 | } |
| 385 | |
| 386 | |
| 387 | /* SSL password callback. */ |
| 388 | static int verify_cb(int preverify_ok, X509_STORE_CTX *x509_ctx) |
| 389 | { |
| 390 | pj_ssl_sock_t *ssock; |
| 391 | SSL *ossl_ssl; |
| 392 | int err; |
| 393 | |
| 394 | /* Get SSL instance */ |
| 395 | ossl_ssl = X509_STORE_CTX_get_ex_data(x509_ctx, |
| 396 | SSL_get_ex_data_X509_STORE_CTX_idx()); |
| 397 | pj_assert(ossl_ssl); |
| 398 | |
| 399 | /* Get SSL socket instance */ |
| 400 | ssock = SSL_get_ex_data(ossl_ssl, sslsock_idx); |
| 401 | pj_assert(ssock); |
| 402 | |
| 403 | /* Store verification status */ |
| 404 | err = X509_STORE_CTX_get_error(x509_ctx); |
| 405 | switch (err) { |
| 406 | case X509_V_OK: |
| 407 | break; |
| 408 | |
| 409 | case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT: |
| 410 | ssock->verify_status |= PJ_SSL_CERT_EISSUER_NOT_FOUND; |
| 411 | break; |
| 412 | |
| 413 | case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD: |
| 414 | case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD: |
| 415 | case X509_V_ERR_UNABLE_TO_DECRYPT_CERT_SIGNATURE: |
| 416 | case X509_V_ERR_UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY: |
| 417 | ssock->verify_status |= PJ_SSL_CERT_EINVALID_FORMAT; |
| 418 | break; |
| 419 | |
| 420 | case X509_V_ERR_CERT_NOT_YET_VALID: |
| 421 | case X509_V_ERR_CERT_HAS_EXPIRED: |
| 422 | ssock->verify_status |= PJ_SSL_CERT_EVALIDITY_PERIOD; |
| 423 | break; |
| 424 | |
| 425 | case X509_V_ERR_UNABLE_TO_GET_CRL: |
| 426 | case X509_V_ERR_CRL_NOT_YET_VALID: |
| 427 | case X509_V_ERR_CRL_HAS_EXPIRED: |
| 428 | case X509_V_ERR_UNABLE_TO_DECRYPT_CRL_SIGNATURE: |
| 429 | case X509_V_ERR_CRL_SIGNATURE_FAILURE: |
| 430 | case X509_V_ERR_ERROR_IN_CRL_LAST_UPDATE_FIELD: |
| 431 | case X509_V_ERR_ERROR_IN_CRL_NEXT_UPDATE_FIELD: |
| 432 | ssock->verify_status |= PJ_SSL_CERT_ECRL_FAILURE; |
| 433 | break; |
| 434 | |
| 435 | case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT: |
| 436 | case X509_V_ERR_CERT_UNTRUSTED: |
| 437 | case X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN: |
| 438 | case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY: |
| 439 | ssock->verify_status |= PJ_SSL_CERT_EUNTRUSTED; |
| 440 | break; |
| 441 | |
| 442 | case X509_V_ERR_CERT_SIGNATURE_FAILURE: |
| 443 | case X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE: |
| 444 | case X509_V_ERR_SUBJECT_ISSUER_MISMATCH: |
| 445 | case X509_V_ERR_AKID_SKID_MISMATCH: |
| 446 | case X509_V_ERR_AKID_ISSUER_SERIAL_MISMATCH: |
| 447 | case X509_V_ERR_KEYUSAGE_NO_CERTSIGN: |
| 448 | ssock->verify_status |= PJ_SSL_CERT_EISSUER_MISMATCH; |
| 449 | break; |
| 450 | |
| 451 | case X509_V_ERR_CERT_REVOKED: |
| 452 | ssock->verify_status |= PJ_SSL_CERT_EREVOKED; |
| 453 | break; |
| 454 | |
| 455 | case X509_V_ERR_INVALID_PURPOSE: |
| 456 | case X509_V_ERR_CERT_REJECTED: |
| 457 | case X509_V_ERR_INVALID_CA: |
| 458 | ssock->verify_status |= PJ_SSL_CERT_EINVALID_PURPOSE; |
| 459 | break; |
| 460 | |
| 461 | case X509_V_ERR_CERT_CHAIN_TOO_LONG: /* not really used */ |
| 462 | case X509_V_ERR_PATH_LENGTH_EXCEEDED: |
| 463 | ssock->verify_status |= PJ_SSL_CERT_ECHAIN_TOO_LONG; |
| 464 | break; |
| 465 | |
| 466 | /* Unknown errors */ |
| 467 | case X509_V_ERR_OUT_OF_MEM: |
| 468 | default: |
| 469 | ssock->verify_status |= PJ_SSL_CERT_EUNKNOWN; |
| 470 | break; |
| 471 | } |
| 472 | |
| 473 | /* When verification is not requested just return ok here, however |
| 474 | * application can still get the verification status. |
| 475 | */ |
| 476 | if (PJ_FALSE == ssock->param.verify_peer) |
| 477 | preverify_ok = 1; |
| 478 | |
| 479 | return preverify_ok; |
| 480 | } |
| 481 | |
| 482 | /* Setting SSL sock cipher list */ |
| 483 | static pj_status_t set_cipher_list(pj_ssl_sock_t *ssock); |
| 484 | |
| 485 | |
| 486 | /* Create and initialize new SSL context and instance */ |
| 487 | static pj_status_t create_ssl(pj_ssl_sock_t *ssock) |
| 488 | { |
| 489 | SSL_METHOD *ssl_method; |
| 490 | SSL_CTX *ctx; |
| 491 | pj_ssl_cert_t *cert; |
| 492 | int mode, rc; |
| 493 | pj_status_t status; |
| 494 | |
| 495 | pj_assert(ssock); |
| 496 | |
| 497 | cert = ssock->cert; |
| 498 | |
| 499 | /* Make sure OpenSSL library has been initialized */ |
| 500 | init_openssl(); |
| 501 | |
| 502 | /* Determine SSL method to use */ |
| 503 | switch (ssock->param.proto) { |
| 504 | case PJ_SSL_SOCK_PROTO_DEFAULT: |
| 505 | case PJ_SSL_SOCK_PROTO_TLS1: |
| 506 | ssl_method = (SSL_METHOD*)TLSv1_method(); |
| 507 | break; |
| 508 | #ifndef OPENSSL_NO_SSL2 |
| 509 | case PJ_SSL_SOCK_PROTO_SSL2: |
| 510 | ssl_method = (SSL_METHOD*)SSLv2_method(); |
| 511 | break; |
| 512 | #endif |
| 513 | case PJ_SSL_SOCK_PROTO_SSL3: |
| 514 | ssl_method = (SSL_METHOD*)SSLv3_method(); |
| 515 | break; |
| 516 | case PJ_SSL_SOCK_PROTO_SSL23: |
| 517 | ssl_method = (SSL_METHOD*)SSLv23_method(); |
| 518 | break; |
| 519 | //case PJ_SSL_SOCK_PROTO_DTLS1: |
| 520 | //ssl_method = (SSL_METHOD*)DTLSv1_method(); |
| 521 | //break; |
| 522 | default: |
| 523 | return PJ_EINVAL; |
| 524 | } |
| 525 | |
| 526 | /* Create SSL context */ |
| 527 | ctx = SSL_CTX_new(ssl_method); |
| 528 | if (ctx == NULL) { |
| 529 | return GET_SSL_STATUS(ssock); |
| 530 | } |
| 531 | |
| 532 | /* Apply credentials */ |
| 533 | if (cert) { |
| 534 | /* Load CA list if one is specified. */ |
| 535 | if (cert->CA_file.slen) { |
| 536 | |
| 537 | rc = SSL_CTX_load_verify_locations(ctx, cert->CA_file.ptr, NULL); |
| 538 | |
| 539 | if (rc != 1) { |
| 540 | status = GET_SSL_STATUS(ssock); |
| 541 | PJ_LOG(1,(ssock->pool->obj_name, "Error loading CA list file " |
| 542 | "'%s'", cert->CA_file.ptr)); |
| 543 | SSL_CTX_free(ctx); |
| 544 | return status; |
| 545 | } |
| 546 | } |
| 547 | |
| 548 | /* Set password callback */ |
| 549 | if (cert->privkey_pass.slen) { |
| 550 | SSL_CTX_set_default_passwd_cb(ctx, password_cb); |
| 551 | SSL_CTX_set_default_passwd_cb_userdata(ctx, cert); |
| 552 | } |
| 553 | |
| 554 | |
| 555 | /* Load certificate if one is specified */ |
| 556 | if (cert->cert_file.slen) { |
| 557 | |
| 558 | /* Load certificate chain from file into ctx */ |
| 559 | rc = SSL_CTX_use_certificate_chain_file(ctx, cert->cert_file.ptr); |
| 560 | |
| 561 | if(rc != 1) { |
| 562 | status = GET_SSL_STATUS(ssock); |
| 563 | PJ_LOG(1,(ssock->pool->obj_name, "Error loading certificate " |
| 564 | "chain file '%s'", cert->cert_file.ptr)); |
| 565 | SSL_CTX_free(ctx); |
| 566 | return status; |
| 567 | } |
| 568 | } |
| 569 | |
| 570 | |
| 571 | /* Load private key if one is specified */ |
| 572 | if (cert->privkey_file.slen) { |
| 573 | /* Adds the first private key found in file to ctx */ |
| 574 | rc = SSL_CTX_use_PrivateKey_file(ctx, cert->privkey_file.ptr, |
| 575 | SSL_FILETYPE_PEM); |
| 576 | |
| 577 | if(rc != 1) { |
| 578 | status = GET_SSL_STATUS(ssock); |
| 579 | PJ_LOG(1,(ssock->pool->obj_name, "Error adding private key " |
| 580 | "from '%s'", cert->privkey_file.ptr)); |
| 581 | SSL_CTX_free(ctx); |
| 582 | return status; |
| 583 | } |
| 584 | } |
| 585 | } |
| 586 | |
| 587 | /* Create SSL instance */ |
| 588 | ssock->ossl_ctx = ctx; |
| 589 | ssock->ossl_ssl = SSL_new(ssock->ossl_ctx); |
| 590 | if (ssock->ossl_ssl == NULL) { |
| 591 | return GET_SSL_STATUS(ssock); |
| 592 | } |
| 593 | |
| 594 | /* Set SSL sock as application data of SSL instance */ |
| 595 | SSL_set_ex_data(ssock->ossl_ssl, sslsock_idx, ssock); |
| 596 | |
| 597 | /* SSL verification options */ |
| 598 | mode = SSL_VERIFY_PEER; |
| 599 | if (ssock->is_server && ssock->param.require_client_cert) |
| 600 | mode |= SSL_VERIFY_FAIL_IF_NO_PEER_CERT; |
| 601 | |
| 602 | SSL_set_verify(ssock->ossl_ssl, mode, &verify_cb); |
| 603 | |
| 604 | /* Set cipher list */ |
| 605 | status = set_cipher_list(ssock); |
| 606 | if (status != PJ_SUCCESS) |
| 607 | return status; |
| 608 | |
| 609 | /* Setup SSL BIOs */ |
| 610 | ssock->ossl_rbio = BIO_new(BIO_s_mem()); |
| 611 | ssock->ossl_wbio = BIO_new(BIO_s_mem()); |
| 612 | BIO_set_close(ssock->ossl_rbio, BIO_CLOSE); |
| 613 | BIO_set_close(ssock->ossl_wbio, BIO_CLOSE); |
| 614 | SSL_set_bio(ssock->ossl_ssl, ssock->ossl_rbio, ssock->ossl_wbio); |
| 615 | |
| 616 | return PJ_SUCCESS; |
| 617 | } |
| 618 | |
| 619 | |
| 620 | /* Destroy SSL context and instance */ |
| 621 | static void destroy_ssl(pj_ssl_sock_t *ssock) |
| 622 | { |
| 623 | /* Destroy SSL instance */ |
| 624 | if (ssock->ossl_ssl) { |
| 625 | SSL_shutdown(ssock->ossl_ssl); |
| 626 | SSL_free(ssock->ossl_ssl); /* this will also close BIOs */ |
| 627 | ssock->ossl_ssl = NULL; |
| 628 | } |
| 629 | |
| 630 | /* Destroy SSL context */ |
| 631 | if (ssock->ossl_ctx) { |
| 632 | SSL_CTX_free(ssock->ossl_ctx); |
| 633 | ssock->ossl_ctx = NULL; |
| 634 | } |
| 635 | |
| 636 | /* Potentially shutdown OpenSSL library if this is the last |
| 637 | * context exists. |
| 638 | */ |
| 639 | shutdown_openssl(); |
| 640 | } |
| 641 | |
| 642 | |
| 643 | /* Reset SSL socket state */ |
| 644 | static void reset_ssl_sock_state(pj_ssl_sock_t *ssock) |
| 645 | { |
| 646 | ssock->ssl_state = SSL_STATE_NULL; |
| 647 | |
| 648 | destroy_ssl(ssock); |
| 649 | |
| 650 | if (ssock->asock) { |
| 651 | pj_activesock_close(ssock->asock); |
| 652 | ssock->asock = NULL; |
| 653 | ssock->sock = PJ_INVALID_SOCKET; |
| 654 | } |
| 655 | if (ssock->sock != PJ_INVALID_SOCKET) { |
| 656 | pj_sock_close(ssock->sock); |
| 657 | ssock->sock = PJ_INVALID_SOCKET; |
| 658 | } |
| 659 | |
| 660 | /* Upon error, OpenSSL may leave any error description in the thread |
| 661 | * error queue, which sometime may cause next call to SSL API returning |
| 662 | * false error alarm, e.g: in Linux, SSL_CTX_use_certificate_chain_file() |
| 663 | * returning false error after a handshake error (in different SSL_CTX!). |
| 664 | * For now, just clear thread error queue here. |
| 665 | */ |
| 666 | ERR_clear_error(); |
| 667 | } |
| 668 | |
| 669 | |
| 670 | /* Generate cipher list with user preference order in OpenSSL format */ |
| 671 | static pj_status_t set_cipher_list(pj_ssl_sock_t *ssock) |
| 672 | { |
| 673 | char buf[1024]; |
| 674 | pj_str_t cipher_list; |
| 675 | STACK_OF(SSL_CIPHER) *sk_cipher; |
| 676 | unsigned i; |
| 677 | int j, ret; |
| 678 | |
| 679 | if (ssock->param.ciphers_num == 0) |
| 680 | return PJ_SUCCESS; |
| 681 | |
| 682 | pj_strset(&cipher_list, buf, 0); |
| 683 | |
| 684 | /* Set SSL with ALL available ciphers */ |
| 685 | SSL_set_cipher_list(ssock->ossl_ssl, "ALL"); |
| 686 | |
| 687 | /* Generate user specified cipher list in OpenSSL format */ |
| 688 | sk_cipher = SSL_get_ciphers(ssock->ossl_ssl); |
| 689 | for (i = 0; i < ssock->param.ciphers_num; ++i) { |
| 690 | for (j = 0; j < sk_SSL_CIPHER_num(sk_cipher); ++j) { |
| 691 | SSL_CIPHER *c; |
| 692 | c = sk_SSL_CIPHER_value(sk_cipher, j); |
| 693 | if (ssock->param.ciphers[i] == (pj_ssl_cipher) |
| 694 | ((pj_uint32_t)c->id & 0x00FFFFFF)) |
| 695 | { |
| 696 | const char *c_name; |
| 697 | |
| 698 | c_name = SSL_CIPHER_get_name(c); |
| 699 | |
| 700 | /* Check buffer size */ |
| 701 | if (cipher_list.slen + pj_ansi_strlen(c_name) + 2 > sizeof(buf)) { |
| 702 | pj_assert(!"Insufficient temporary buffer for cipher"); |
| 703 | return PJ_ETOOMANY; |
| 704 | } |
| 705 | |
| 706 | /* Add colon separator */ |
| 707 | if (cipher_list.slen) |
| 708 | pj_strcat2(&cipher_list, ":"); |
| 709 | |
| 710 | /* Add the cipher */ |
| 711 | pj_strcat2(&cipher_list, c_name); |
| 712 | break; |
| 713 | } |
| 714 | } |
| 715 | } |
| 716 | |
| 717 | /* Put NULL termination in the generated cipher list */ |
| 718 | cipher_list.ptr[cipher_list.slen] = '\0'; |
| 719 | |
| 720 | /* Finally, set chosen cipher list */ |
| 721 | ret = SSL_set_cipher_list(ssock->ossl_ssl, buf); |
| 722 | if (ret < 1) { |
| 723 | return GET_SSL_STATUS(ssock); |
| 724 | } |
| 725 | |
| 726 | return PJ_SUCCESS; |
| 727 | } |
| 728 | |
| 729 | |
| 730 | /* Parse OpenSSL ASN1_TIME to pj_time_val and GMT info */ |
| 731 | static pj_bool_t parse_ossl_asn1_time(pj_time_val *tv, pj_bool_t *gmt, |
| 732 | const ASN1_TIME *tm) |
| 733 | { |
| 734 | unsigned long parts[7] = {0}; |
| 735 | char *p, *end; |
| 736 | unsigned len; |
| 737 | pj_bool_t utc; |
| 738 | pj_parsed_time pt; |
| 739 | int i; |
| 740 | |
| 741 | utc = tm->type == V_ASN1_UTCTIME; |
| 742 | p = (char*)tm->data; |
| 743 | len = tm->length; |
| 744 | end = p + len - 1; |
| 745 | |
| 746 | /* GMT */ |
| 747 | *gmt = (*end == 'Z'); |
| 748 | |
| 749 | /* parse parts */ |
| 750 | for (i = 0; i < 7 && p < end; ++i) { |
| 751 | pj_str_t st; |
| 752 | |
| 753 | if (i==0 && !utc) { |
| 754 | /* 4 digits year part for non-UTC time format */ |
| 755 | st.slen = 4; |
| 756 | } else if (i==6) { |
| 757 | /* fraction of seconds */ |
| 758 | if (*p == '.') ++p; |
| 759 | st.slen = end - p + 1; |
| 760 | } else { |
| 761 | /* other parts always 2 digits length */ |
| 762 | st.slen = 2; |
| 763 | } |
| 764 | st.ptr = p; |
| 765 | |
| 766 | parts[i] = pj_strtoul(&st); |
| 767 | p += st.slen; |
| 768 | } |
| 769 | |
| 770 | /* encode parts to pj_time_val */ |
| 771 | pt.year = parts[0]; |
| 772 | if (utc) |
| 773 | pt.year += (pt.year < 50)? 2000:1900; |
| 774 | pt.mon = parts[1] - 1; |
| 775 | pt.day = parts[2]; |
| 776 | pt.hour = parts[3]; |
| 777 | pt.min = parts[4]; |
| 778 | pt.sec = parts[5]; |
| 779 | pt.msec = parts[6]; |
| 780 | |
| 781 | pj_time_encode(&pt, tv); |
| 782 | |
| 783 | return PJ_TRUE; |
| 784 | } |
| 785 | |
| 786 | |
| 787 | /* Get Common Name field string from a general name string */ |
| 788 | static void get_cn_from_gen_name(const pj_str_t *gen_name, pj_str_t *cn) |
| 789 | { |
| 790 | pj_str_t CN_sign = {"/CN=", 4}; |
| 791 | char *p, *q; |
| 792 | |
| 793 | pj_bzero(cn, sizeof(cn)); |
| 794 | |
| 795 | p = pj_strstr(gen_name, &CN_sign); |
| 796 | if (!p) |
| 797 | return; |
| 798 | |
| 799 | p += 4; /* shift pointer to value part */ |
| 800 | pj_strset(cn, p, gen_name->slen - (p - gen_name->ptr)); |
| 801 | q = pj_strchr(cn, '/'); |
| 802 | if (q) |
| 803 | cn->slen = q - p; |
| 804 | } |
| 805 | |
| 806 | |
| 807 | /* Get certificate info from OpenSSL X509, in case the certificate info |
| 808 | * hal already populated, this function will check if the contents need |
| 809 | * to be updated by inspecting the issuer and the serial number. |
| 810 | */ |
| 811 | static void get_cert_info(pj_pool_t *pool, pj_ssl_cert_info *ci, X509 *x) |
| 812 | { |
| 813 | pj_bool_t update_needed; |
| 814 | char buf[512]; |
| 815 | pj_uint8_t serial_no[64] = {0}; /* should be >= sizeof(ci->serial_no) */ |
| 816 | pj_uint8_t *p; |
| 817 | unsigned len; |
| 818 | GENERAL_NAMES *names = NULL; |
| 819 | |
| 820 | pj_assert(pool && ci && x); |
| 821 | |
| 822 | /* Get issuer */ |
| 823 | X509_NAME_oneline(X509_get_issuer_name(x), buf, sizeof(buf)); |
| 824 | |
| 825 | /* Get serial no */ |
| 826 | p = (pj_uint8_t*) M_ASN1_STRING_data(X509_get_serialNumber(x)); |
| 827 | len = M_ASN1_STRING_length(X509_get_serialNumber(x)); |
| 828 | if (len > sizeof(ci->serial_no)) |
| 829 | len = sizeof(ci->serial_no); |
| 830 | pj_memcpy(serial_no + sizeof(ci->serial_no) - len, p, len); |
| 831 | |
| 832 | /* Check if the contents need to be updated. */ |
| 833 | update_needed = pj_strcmp2(&ci->issuer.info, buf) || |
| 834 | pj_memcmp(ci->serial_no, serial_no, sizeof(ci->serial_no)); |
| 835 | if (!update_needed) |
| 836 | return; |
| 837 | |
| 838 | /* Update cert info */ |
| 839 | |
| 840 | pj_bzero(ci, sizeof(pj_ssl_cert_info)); |
| 841 | |
| 842 | /* Version */ |
| 843 | ci->version = X509_get_version(x) + 1; |
| 844 | |
| 845 | /* Issuer */ |
| 846 | pj_strdup2(pool, &ci->issuer.info, buf); |
| 847 | get_cn_from_gen_name(&ci->issuer.info, &ci->issuer.cn); |
| 848 | |
| 849 | /* Serial number */ |
| 850 | pj_memcpy(ci->serial_no, serial_no, sizeof(ci->serial_no)); |
| 851 | |
| 852 | /* Subject */ |
| 853 | pj_strdup2(pool, &ci->subject.info, |
| 854 | X509_NAME_oneline(X509_get_subject_name(x), |
| 855 | buf, sizeof(buf))); |
| 856 | get_cn_from_gen_name(&ci->subject.info, &ci->subject.cn); |
| 857 | |
| 858 | /* Validity */ |
| 859 | parse_ossl_asn1_time(&ci->validity.start, &ci->validity.gmt, |
| 860 | X509_get_notBefore(x)); |
| 861 | parse_ossl_asn1_time(&ci->validity.end, &ci->validity.gmt, |
| 862 | X509_get_notAfter(x)); |
| 863 | |
| 864 | /* Subject Alternative Name extension */ |
| 865 | if (ci->version >= 3) { |
| 866 | names = (GENERAL_NAMES*) X509_get_ext_d2i(x, NID_subject_alt_name, |
| 867 | NULL, NULL); |
| 868 | } |
| 869 | if (names) { |
| 870 | unsigned i, cnt; |
| 871 | |
| 872 | cnt = sk_GENERAL_NAME_num(names); |
| 873 | ci->subj_alt_name.entry = pj_pool_calloc(pool, cnt, |
| 874 | sizeof(*ci->subj_alt_name.entry)); |
| 875 | |
| 876 | for (i = 0; i < cnt; ++i) { |
| 877 | unsigned char *p = 0; |
| 878 | pj_ssl_cert_name_type type = PJ_SSL_CERT_NAME_UNKNOWN; |
| 879 | const GENERAL_NAME *name; |
| 880 | |
| 881 | name = sk_GENERAL_NAME_value(names, i); |
| 882 | |
| 883 | switch (name->type) { |
| 884 | case GEN_EMAIL: |
| 885 | len = ASN1_STRING_to_UTF8(&p, name->d.ia5); |
| 886 | type = PJ_SSL_CERT_NAME_RFC822; |
| 887 | break; |
| 888 | case GEN_DNS: |
| 889 | len = ASN1_STRING_to_UTF8(&p, name->d.ia5); |
| 890 | type = PJ_SSL_CERT_NAME_DNS; |
| 891 | break; |
| 892 | case GEN_URI: |
| 893 | len = ASN1_STRING_to_UTF8(&p, name->d.ia5); |
| 894 | type = PJ_SSL_CERT_NAME_URI; |
| 895 | break; |
| 896 | case GEN_IPADD: |
| 897 | p = ASN1_STRING_data(name->d.ip); |
| 898 | len = ASN1_STRING_length(name->d.ip); |
| 899 | type = PJ_SSL_CERT_NAME_IP; |
| 900 | break; |
| 901 | default: |
| 902 | break; |
| 903 | } |
| 904 | |
| 905 | if (p && len && type != PJ_SSL_CERT_NAME_UNKNOWN) { |
| 906 | ci->subj_alt_name.entry[ci->subj_alt_name.cnt].type = type; |
| 907 | if (type == PJ_SSL_CERT_NAME_IP) { |
| 908 | int af = pj_AF_INET(); |
| 909 | if (len == sizeof(pj_in6_addr)) af = pj_AF_INET6(); |
| 910 | pj_inet_ntop2(af, p, buf, sizeof(buf)); |
| 911 | pj_strdup2(pool, |
| 912 | &ci->subj_alt_name.entry[ci->subj_alt_name.cnt].name, |
| 913 | buf); |
| 914 | } else { |
| 915 | pj_strdup2(pool, |
| 916 | &ci->subj_alt_name.entry[ci->subj_alt_name.cnt].name, |
| 917 | (char*)p); |
| 918 | OPENSSL_free(p); |
| 919 | } |
| 920 | ci->subj_alt_name.cnt++; |
| 921 | } |
| 922 | } |
| 923 | } |
| 924 | } |
| 925 | |
| 926 | |
| 927 | /* Update local & remote certificates info. This function should be |
| 928 | * called after handshake or renegotiation successfully completed. |
| 929 | */ |
| 930 | static void update_certs_info(pj_ssl_sock_t *ssock) |
| 931 | { |
| 932 | X509 *x; |
| 933 | |
| 934 | pj_assert(ssock->ssl_state == SSL_STATE_ESTABLISHED); |
| 935 | |
| 936 | /* Active local certificate */ |
| 937 | x = SSL_get_certificate(ssock->ossl_ssl); |
| 938 | if (x) { |
| 939 | get_cert_info(ssock->pool, &ssock->local_cert_info, x); |
| 940 | /* Don't free local's X509! */ |
| 941 | } else { |
| 942 | pj_bzero(&ssock->local_cert_info, sizeof(pj_ssl_cert_info)); |
| 943 | } |
| 944 | |
| 945 | /* Active remote certificate */ |
| 946 | x = SSL_get_peer_certificate(ssock->ossl_ssl); |
| 947 | if (x) { |
| 948 | get_cert_info(ssock->pool, &ssock->remote_cert_info, x); |
| 949 | /* Free peer's X509 */ |
| 950 | X509_free(x); |
| 951 | } else { |
| 952 | pj_bzero(&ssock->remote_cert_info, sizeof(pj_ssl_cert_info)); |
| 953 | } |
| 954 | } |
| 955 | |
| 956 | |
| 957 | /* When handshake completed: |
| 958 | * - notify application |
| 959 | * - if handshake failed, reset SSL state |
| 960 | * - return PJ_FALSE when SSL socket instance is destroyed by application. |
| 961 | */ |
| 962 | static pj_bool_t on_handshake_complete(pj_ssl_sock_t *ssock, |
| 963 | pj_status_t status) |
| 964 | { |
| 965 | /* Cancel handshake timer */ |
| 966 | if (ssock->timer.id == TIMER_HANDSHAKE_TIMEOUT) { |
| 967 | pj_timer_heap_cancel(ssock->param.timer_heap, &ssock->timer); |
| 968 | ssock->timer.id = TIMER_NONE; |
| 969 | } |
| 970 | |
| 971 | /* Update certificates info on successful handshake */ |
| 972 | if (status == PJ_SUCCESS) |
| 973 | update_certs_info(ssock); |
| 974 | |
| 975 | /* Accepting */ |
| 976 | if (ssock->is_server) { |
| 977 | if (status != PJ_SUCCESS) { |
| 978 | /* Handshake failed in accepting, destroy our self silently. */ |
| 979 | |
| 980 | char errmsg[PJ_ERR_MSG_SIZE]; |
| 981 | char buf[PJ_INET6_ADDRSTRLEN+10]; |
| 982 | |
| 983 | pj_strerror(status, errmsg, sizeof(errmsg)); |
| 984 | PJ_LOG(3,(ssock->pool->obj_name, "Handshake failed in accepting " |
| 985 | "%s: %s", |
| 986 | pj_sockaddr_print(&ssock->rem_addr, buf, sizeof(buf), 3), |
| 987 | errmsg)); |
| 988 | |
| 989 | /* Workaround for ticket #985 */ |
| 990 | #if (defined(PJ_WIN32) && PJ_WIN32!=0) || (defined(PJ_WIN64) && PJ_WIN64!=0) |
| 991 | if (ssock->param.timer_heap) { |
| 992 | pj_time_val interval = {0, DELAYED_CLOSE_TIMEOUT}; |
| 993 | |
| 994 | reset_ssl_sock_state(ssock); |
| 995 | |
| 996 | ssock->timer.id = TIMER_CLOSE; |
| 997 | pj_time_val_normalize(&interval); |
| 998 | if (pj_timer_heap_schedule(ssock->param.timer_heap, |
| 999 | &ssock->timer, &interval) != 0) |
| 1000 | { |
| 1001 | ssock->timer.id = TIMER_NONE; |
| 1002 | pj_ssl_sock_close(ssock); |
| 1003 | } |
| 1004 | } else |
| 1005 | #endif /* PJ_WIN32 */ |
| 1006 | { |
| 1007 | pj_ssl_sock_close(ssock); |
| 1008 | } |
| 1009 | return PJ_FALSE; |
| 1010 | } |
| 1011 | /* Notify application the newly accepted SSL socket */ |
| 1012 | if (ssock->param.cb.on_accept_complete) { |
| 1013 | pj_bool_t ret; |
| 1014 | ret = (*ssock->param.cb.on_accept_complete) |
| 1015 | (ssock->parent, ssock, (pj_sockaddr_t*)&ssock->rem_addr, |
| 1016 | pj_sockaddr_get_len((pj_sockaddr_t*)&ssock->rem_addr)); |
| 1017 | if (ret == PJ_FALSE) |
| 1018 | return PJ_FALSE; |
| 1019 | } |
| 1020 | } |
| 1021 | |
| 1022 | /* Connecting */ |
| 1023 | else { |
| 1024 | /* On failure, reset SSL socket state first, as app may try to |
| 1025 | * reconnect in the callback. |
| 1026 | */ |
| 1027 | if (status != PJ_SUCCESS) { |
| 1028 | /* Server disconnected us, possibly due to SSL nego failure */ |
| 1029 | if (status == PJ_EEOF) { |
| 1030 | unsigned long err; |
| 1031 | err = ERR_get_error(); |
| 1032 | if (err != SSL_ERROR_NONE) |
| 1033 | status = STATUS_FROM_SSL_ERR(ssock, err); |
| 1034 | } |
| 1035 | reset_ssl_sock_state(ssock); |
| 1036 | } |
| 1037 | if (ssock->param.cb.on_connect_complete) { |
| 1038 | pj_bool_t ret; |
| 1039 | ret = (*ssock->param.cb.on_connect_complete)(ssock, status); |
| 1040 | if (ret == PJ_FALSE) |
| 1041 | return PJ_FALSE; |
| 1042 | } |
| 1043 | } |
| 1044 | |
| 1045 | return PJ_TRUE; |
| 1046 | } |
| 1047 | |
| 1048 | static write_data_t* alloc_send_data(pj_ssl_sock_t *ssock, pj_size_t len) |
| 1049 | { |
| 1050 | send_buf_t *send_buf = &ssock->send_buf; |
| 1051 | pj_size_t avail_len, skipped_len = 0; |
| 1052 | char *reg1, *reg2; |
| 1053 | pj_size_t reg1_len, reg2_len; |
| 1054 | write_data_t *p; |
| 1055 | |
| 1056 | /* Check buffer availability */ |
| 1057 | avail_len = send_buf->max_len - send_buf->len; |
| 1058 | if (avail_len < len) |
| 1059 | return NULL; |
| 1060 | |
| 1061 | /* If buffer empty, reset start pointer and return it */ |
| 1062 | if (send_buf->len == 0) { |
| 1063 | send_buf->start = send_buf->buf; |
| 1064 | send_buf->len = len; |
| 1065 | p = (write_data_t*)send_buf->start; |
| 1066 | goto init_send_data; |
| 1067 | } |
| 1068 | |
| 1069 | /* Free space may be wrapped/splitted into two regions, so let's |
| 1070 | * analyze them if any region can hold the write data. |
| 1071 | */ |
| 1072 | reg1 = send_buf->start + send_buf->len; |
| 1073 | if (reg1 >= send_buf->buf + send_buf->max_len) |
| 1074 | reg1 -= send_buf->max_len; |
| 1075 | reg1_len = send_buf->max_len - send_buf->len; |
| 1076 | if (reg1 + reg1_len > send_buf->buf + send_buf->max_len) { |
| 1077 | reg1_len = send_buf->buf + send_buf->max_len - reg1; |
| 1078 | reg2 = send_buf->buf; |
| 1079 | reg2_len = send_buf->start - send_buf->buf; |
| 1080 | } else { |
| 1081 | reg2 = NULL; |
| 1082 | reg2_len = 0; |
| 1083 | } |
| 1084 | |
| 1085 | /* More buffer availability check, note that the write data must be in |
| 1086 | * a contigue buffer. |
| 1087 | */ |
| 1088 | avail_len = PJ_MAX(reg1_len, reg2_len); |
| 1089 | if (avail_len < len) |
| 1090 | return NULL; |
| 1091 | |
| 1092 | /* Get the data slot */ |
| 1093 | if (reg1_len >= len) { |
| 1094 | p = (write_data_t*)reg1; |
| 1095 | } else { |
| 1096 | p = (write_data_t*)reg2; |
| 1097 | skipped_len = reg1_len; |
| 1098 | } |
| 1099 | |
| 1100 | /* Update buffer length */ |
| 1101 | send_buf->len += len + skipped_len; |
| 1102 | |
| 1103 | init_send_data: |
| 1104 | /* Init the new send data */ |
| 1105 | pj_bzero(p, sizeof(*p)); |
| 1106 | pj_list_init(p); |
| 1107 | pj_list_push_back(&ssock->send_pending, p); |
| 1108 | |
| 1109 | return p; |
| 1110 | } |
| 1111 | |
| 1112 | static void free_send_data(pj_ssl_sock_t *ssock, write_data_t *wdata) |
| 1113 | { |
| 1114 | send_buf_t *buf = &ssock->send_buf; |
| 1115 | write_data_t *spl = &ssock->send_pending; |
| 1116 | |
| 1117 | pj_assert(!pj_list_empty(&ssock->send_pending)); |
| 1118 | |
| 1119 | /* Free slot from the buffer */ |
| 1120 | if (spl->next == wdata && spl->prev == wdata) { |
| 1121 | /* This is the only data, reset the buffer */ |
| 1122 | buf->start = buf->buf; |
| 1123 | buf->len = 0; |
| 1124 | } else if (spl->next == wdata) { |
| 1125 | /* This is the first data, shift start pointer of the buffer and |
| 1126 | * adjust the buffer length. |
| 1127 | */ |
| 1128 | buf->start = (char*)wdata->next; |
| 1129 | if (wdata->next > wdata) { |
| 1130 | buf->len -= ((char*)wdata->next - buf->start); |
| 1131 | } else { |
| 1132 | /* Overlapped */ |
| 1133 | pj_size_t right_len, left_len; |
| 1134 | right_len = buf->buf + buf->max_len - (char*)wdata; |
| 1135 | left_len = (char*)wdata->next - buf->buf; |
| 1136 | buf->len -= (right_len + left_len); |
| 1137 | } |
| 1138 | } else if (spl->prev == wdata) { |
| 1139 | /* This is the last data, just adjust the buffer length */ |
| 1140 | if (wdata->prev < wdata) { |
| 1141 | pj_size_t jump_len; |
| 1142 | jump_len = (char*)wdata - |
| 1143 | ((char*)wdata->prev + wdata->prev->record_len); |
| 1144 | buf->len -= (wdata->record_len + jump_len); |
| 1145 | } else { |
| 1146 | /* Overlapped */ |
| 1147 | pj_size_t right_len, left_len; |
| 1148 | right_len = buf->buf + buf->max_len - |
| 1149 | ((char*)wdata->prev + wdata->prev->record_len); |
| 1150 | left_len = (char*)wdata + wdata->record_len - buf->buf; |
| 1151 | buf->len -= (right_len + left_len); |
| 1152 | } |
| 1153 | } |
| 1154 | /* For data in the middle buffer, just do nothing on the buffer. The slot |
| 1155 | * will be freed later when freeing the first/last data. |
| 1156 | */ |
| 1157 | |
| 1158 | /* Remove the data from send pending list */ |
| 1159 | pj_list_erase(wdata); |
| 1160 | } |
| 1161 | |
| 1162 | #if 0 |
| 1163 | /* Just for testing send buffer alloc/free */ |
| 1164 | #include <pj/rand.h> |
| 1165 | pj_status_t pj_ssl_sock_ossl_test_send_buf(pj_pool_t *pool) |
| 1166 | { |
| 1167 | enum { MAX_CHUNK_NUM = 20 }; |
| 1168 | unsigned chunk_size, chunk_cnt, i; |
| 1169 | write_data_t *wdata[MAX_CHUNK_NUM] = {0}; |
| 1170 | pj_time_val now; |
| 1171 | pj_ssl_sock_t *ssock = NULL; |
| 1172 | pj_ssl_sock_param param; |
| 1173 | pj_status_t status; |
| 1174 | |
| 1175 | pj_gettimeofday(&now); |
| 1176 | pj_srand((unsigned)now.sec); |
| 1177 | |
| 1178 | pj_ssl_sock_param_default(¶m); |
| 1179 | status = pj_ssl_sock_create(pool, ¶m, &ssock); |
| 1180 | if (status != PJ_SUCCESS) { |
| 1181 | return status; |
| 1182 | } |
| 1183 | |
| 1184 | if (ssock->send_buf.max_len == 0) { |
| 1185 | ssock->send_buf.buf = (char*) |
| 1186 | pj_pool_alloc(ssock->pool, |
| 1187 | ssock->param.send_buffer_size); |
| 1188 | ssock->send_buf.max_len = ssock->param.send_buffer_size; |
| 1189 | ssock->send_buf.start = ssock->send_buf.buf; |
| 1190 | ssock->send_buf.len = 0; |
| 1191 | } |
| 1192 | |
| 1193 | chunk_size = ssock->param.send_buffer_size / MAX_CHUNK_NUM / 2; |
| 1194 | chunk_cnt = 0; |
| 1195 | for (i = 0; i < MAX_CHUNK_NUM; i++) { |
| 1196 | wdata[i] = alloc_send_data(ssock, pj_rand() % chunk_size + 321); |
| 1197 | if (wdata[i]) |
| 1198 | chunk_cnt++; |
| 1199 | else |
| 1200 | break; |
| 1201 | } |
| 1202 | |
| 1203 | while (chunk_cnt) { |
| 1204 | i = pj_rand() % MAX_CHUNK_NUM; |
| 1205 | if (wdata[i]) { |
| 1206 | free_send_data(ssock, wdata[i]); |
| 1207 | wdata[i] = NULL; |
| 1208 | chunk_cnt--; |
| 1209 | } |
| 1210 | } |
| 1211 | |
| 1212 | if (ssock->send_buf.len != 0) |
| 1213 | status = PJ_EBUG; |
| 1214 | |
| 1215 | pj_ssl_sock_close(ssock); |
| 1216 | return status; |
| 1217 | } |
| 1218 | #endif |
| 1219 | |
| 1220 | |
| 1221 | /* Flush write BIO to network socket. Note that any access to write BIO |
| 1222 | * MUST be serialized, so mutex protection must cover any call to OpenSSL |
| 1223 | * API (that possibly generate data for write BIO) along with the call to |
| 1224 | * this function (flushing all data in write BIO generated by above |
| 1225 | * OpenSSL API call). |
| 1226 | */ |
| 1227 | static pj_status_t flush_write_bio(pj_ssl_sock_t *ssock, |
| 1228 | pj_ioqueue_op_key_t *send_key, |
| 1229 | pj_size_t orig_len, |
| 1230 | unsigned flags) |
| 1231 | { |
| 1232 | char *data; |
| 1233 | pj_ssize_t len; |
| 1234 | write_data_t *wdata; |
| 1235 | pj_size_t needed_len; |
| 1236 | pj_status_t status; |
| 1237 | |
| 1238 | pj_lock_acquire(ssock->write_mutex); |
| 1239 | |
| 1240 | /* Check if there is data in write BIO, flush it if any */ |
| 1241 | if (!BIO_pending(ssock->ossl_wbio)) { |
| 1242 | pj_lock_release(ssock->write_mutex); |
| 1243 | return PJ_SUCCESS; |
| 1244 | } |
| 1245 | |
| 1246 | /* Get data and its length */ |
| 1247 | len = BIO_get_mem_data(ssock->ossl_wbio, &data); |
| 1248 | if (len == 0) { |
| 1249 | pj_lock_release(ssock->write_mutex); |
| 1250 | return PJ_SUCCESS; |
| 1251 | } |
| 1252 | |
| 1253 | /* Calculate buffer size needed, and align it to 8 */ |
| 1254 | needed_len = len + sizeof(write_data_t); |
| 1255 | needed_len = ((needed_len + 7) >> 3) << 3; |
| 1256 | |
| 1257 | /* Allocate buffer for send data */ |
| 1258 | wdata = alloc_send_data(ssock, needed_len); |
| 1259 | if (wdata == NULL) { |
| 1260 | pj_lock_release(ssock->write_mutex); |
| 1261 | return PJ_ENOMEM; |
| 1262 | } |
| 1263 | |
| 1264 | /* Copy the data and set its properties into the send data */ |
| 1265 | pj_ioqueue_op_key_init(&wdata->key, sizeof(pj_ioqueue_op_key_t)); |
| 1266 | wdata->key.user_data = wdata; |
| 1267 | wdata->app_key = send_key; |
| 1268 | wdata->record_len = needed_len; |
| 1269 | wdata->data_len = len; |
| 1270 | wdata->plain_data_len = orig_len; |
| 1271 | wdata->flags = flags; |
| 1272 | pj_memcpy(&wdata->data, data, len); |
| 1273 | |
| 1274 | /* Reset write BIO */ |
| 1275 | BIO_reset(ssock->ossl_wbio); |
| 1276 | |
| 1277 | /* Ticket #1573: Don't hold mutex while calling PJLIB socket send(). */ |
| 1278 | pj_lock_release(ssock->write_mutex); |
| 1279 | |
| 1280 | /* Send it */ |
| 1281 | if (ssock->param.sock_type == pj_SOCK_STREAM()) { |
| 1282 | status = pj_activesock_send(ssock->asock, &wdata->key, |
| 1283 | wdata->data.content, &len, |
| 1284 | flags); |
| 1285 | } else { |
| 1286 | status = pj_activesock_sendto(ssock->asock, &wdata->key, |
| 1287 | wdata->data.content, &len, |
| 1288 | flags, |
| 1289 | (pj_sockaddr_t*)&ssock->rem_addr, |
| 1290 | ssock->addr_len); |
| 1291 | } |
| 1292 | |
| 1293 | if (status != PJ_EPENDING) { |
| 1294 | /* When the sending is not pending, remove the wdata from send |
| 1295 | * pending list. |
| 1296 | */ |
| 1297 | pj_lock_acquire(ssock->write_mutex); |
| 1298 | free_send_data(ssock, wdata); |
| 1299 | pj_lock_release(ssock->write_mutex); |
| 1300 | } |
| 1301 | |
| 1302 | return status; |
| 1303 | } |
| 1304 | |
| 1305 | |
| 1306 | static void on_timer(pj_timer_heap_t *th, struct pj_timer_entry *te) |
| 1307 | { |
| 1308 | pj_ssl_sock_t *ssock = (pj_ssl_sock_t*)te->user_data; |
| 1309 | int timer_id = te->id; |
| 1310 | |
| 1311 | te->id = TIMER_NONE; |
| 1312 | |
| 1313 | PJ_UNUSED_ARG(th); |
| 1314 | |
| 1315 | switch (timer_id) { |
| 1316 | case TIMER_HANDSHAKE_TIMEOUT: |
| 1317 | PJ_LOG(1,(ssock->pool->obj_name, "SSL timeout after %d.%ds", |
| 1318 | ssock->param.timeout.sec, ssock->param.timeout.msec)); |
| 1319 | |
| 1320 | on_handshake_complete(ssock, PJ_ETIMEDOUT); |
| 1321 | break; |
| 1322 | case TIMER_CLOSE: |
| 1323 | pj_ssl_sock_close(ssock); |
| 1324 | break; |
| 1325 | default: |
| 1326 | pj_assert(!"Unknown timer"); |
| 1327 | break; |
| 1328 | } |
| 1329 | } |
| 1330 | |
| 1331 | |
| 1332 | /* Asynchronouse handshake */ |
| 1333 | static pj_status_t do_handshake(pj_ssl_sock_t *ssock) |
| 1334 | { |
| 1335 | pj_status_t status; |
| 1336 | int err; |
| 1337 | |
| 1338 | /* Perform SSL handshake */ |
| 1339 | pj_lock_acquire(ssock->write_mutex); |
| 1340 | err = SSL_do_handshake(ssock->ossl_ssl); |
| 1341 | pj_lock_release(ssock->write_mutex); |
| 1342 | |
| 1343 | /* SSL_do_handshake() may put some pending data into SSL write BIO, |
| 1344 | * flush it if any. |
| 1345 | */ |
| 1346 | status = flush_write_bio(ssock, &ssock->handshake_op_key, 0, 0); |
| 1347 | if (status != PJ_SUCCESS && status != PJ_EPENDING) { |
| 1348 | return status; |
| 1349 | } |
| 1350 | |
| 1351 | if (err < 0) { |
| 1352 | err = SSL_get_error(ssock->ossl_ssl, err); |
| 1353 | if (err != SSL_ERROR_NONE && err != SSL_ERROR_WANT_READ) |
| 1354 | { |
| 1355 | /* Handshake fails */ |
| 1356 | status = STATUS_FROM_SSL_ERR(ssock, err); |
| 1357 | return status; |
| 1358 | } |
| 1359 | } |
| 1360 | |
| 1361 | /* Check if handshake has been completed */ |
| 1362 | if (SSL_is_init_finished(ssock->ossl_ssl)) { |
| 1363 | ssock->ssl_state = SSL_STATE_ESTABLISHED; |
| 1364 | return PJ_SUCCESS; |
| 1365 | } |
| 1366 | |
| 1367 | return PJ_EPENDING; |
| 1368 | } |
| 1369 | |
| 1370 | |
| 1371 | /* |
| 1372 | ******************************************************************* |
| 1373 | * Active socket callbacks. |
| 1374 | ******************************************************************* |
| 1375 | */ |
| 1376 | |
| 1377 | static pj_bool_t asock_on_data_read (pj_activesock_t *asock, |
| 1378 | void *data, |
| 1379 | pj_size_t size, |
| 1380 | pj_status_t status, |
| 1381 | pj_size_t *remainder) |
| 1382 | { |
| 1383 | pj_ssl_sock_t *ssock = (pj_ssl_sock_t*) |
| 1384 | pj_activesock_get_user_data(asock); |
| 1385 | pj_size_t nwritten; |
| 1386 | |
| 1387 | /* Socket error or closed */ |
| 1388 | if (data && size > 0) { |
| 1389 | /* Consume the whole data */ |
| 1390 | nwritten = BIO_write(ssock->ossl_rbio, data, (int)size); |
| 1391 | if (nwritten < size) { |
| 1392 | status = GET_SSL_STATUS(ssock); |
| 1393 | goto on_error; |
| 1394 | } |
| 1395 | } |
| 1396 | |
| 1397 | /* Check if SSL handshake hasn't finished yet */ |
| 1398 | if (ssock->ssl_state == SSL_STATE_HANDSHAKING) { |
| 1399 | pj_bool_t ret = PJ_TRUE; |
| 1400 | |
| 1401 | if (status == PJ_SUCCESS) |
| 1402 | status = do_handshake(ssock); |
| 1403 | |
| 1404 | /* Not pending is either success or failed */ |
| 1405 | if (status != PJ_EPENDING) |
| 1406 | ret = on_handshake_complete(ssock, status); |
| 1407 | |
| 1408 | return ret; |
| 1409 | } |
| 1410 | |
| 1411 | /* See if there is any decrypted data for the application */ |
| 1412 | if (ssock->read_started) { |
| 1413 | do { |
| 1414 | read_data_t *buf = *(OFFSET_OF_READ_DATA_PTR(ssock, data)); |
| 1415 | void *data_ = (pj_int8_t*)buf->data + buf->len; |
| 1416 | int size_ = (int)(ssock->read_size - buf->len); |
| 1417 | |
| 1418 | /* SSL_read() may write some data to BIO write when re-negotiation |
| 1419 | * is on progress, so let's protect it with write mutex. |
| 1420 | */ |
| 1421 | pj_lock_acquire(ssock->write_mutex); |
| 1422 | size_ = SSL_read(ssock->ossl_ssl, data_, size_); |
| 1423 | pj_lock_release(ssock->write_mutex); |
| 1424 | |
| 1425 | if (size_ > 0 || status != PJ_SUCCESS) { |
| 1426 | if (ssock->param.cb.on_data_read) { |
| 1427 | pj_bool_t ret; |
| 1428 | pj_size_t remainder_ = 0; |
| 1429 | |
| 1430 | if (size_ > 0) |
| 1431 | buf->len += size_; |
| 1432 | |
| 1433 | ret = (*ssock->param.cb.on_data_read)(ssock, buf->data, |
| 1434 | buf->len, status, |
| 1435 | &remainder_); |
| 1436 | if (!ret) { |
| 1437 | /* We've been destroyed */ |
| 1438 | return PJ_FALSE; |
| 1439 | } |
| 1440 | |
| 1441 | /* Application may have left some data to be consumed |
| 1442 | * later. |
| 1443 | */ |
| 1444 | buf->len = remainder_; |
| 1445 | } |
| 1446 | |
| 1447 | /* Active socket signalled connection closed/error, this has |
| 1448 | * been signalled to the application along with any remaining |
| 1449 | * buffer. So, let's just reset SSL socket now. |
| 1450 | */ |
| 1451 | if (status != PJ_SUCCESS) { |
| 1452 | reset_ssl_sock_state(ssock); |
| 1453 | return PJ_FALSE; |
| 1454 | } |
| 1455 | |
| 1456 | } else { |
| 1457 | |
| 1458 | int err = SSL_get_error(ssock->ossl_ssl, (int)size); |
| 1459 | |
| 1460 | /* SSL might just return SSL_ERROR_WANT_READ in |
| 1461 | * re-negotiation. |
| 1462 | */ |
| 1463 | if (err != SSL_ERROR_NONE && err != SSL_ERROR_WANT_READ) |
| 1464 | { |
| 1465 | /* Reset SSL socket state, then return PJ_FALSE */ |
| 1466 | status = STATUS_FROM_SSL_ERR(ssock, err); |
| 1467 | reset_ssl_sock_state(ssock); |
| 1468 | goto on_error; |
| 1469 | } |
| 1470 | |
| 1471 | status = do_handshake(ssock); |
| 1472 | if (status == PJ_SUCCESS) { |
| 1473 | /* Renegotiation completed */ |
| 1474 | |
| 1475 | /* Update certificates */ |
| 1476 | update_certs_info(ssock); |
| 1477 | |
| 1478 | // Ticket #1573: Don't hold mutex while calling |
| 1479 | // PJLIB socket send(). |
| 1480 | //pj_lock_acquire(ssock->write_mutex); |
| 1481 | status = flush_delayed_send(ssock); |
| 1482 | //pj_lock_release(ssock->write_mutex); |
| 1483 | |
| 1484 | /* If flushing is ongoing, treat it as success */ |
| 1485 | if (status == PJ_EBUSY) |
| 1486 | status = PJ_SUCCESS; |
| 1487 | |
| 1488 | if (status != PJ_SUCCESS && status != PJ_EPENDING) { |
| 1489 | PJ_PERROR(1,(ssock->pool->obj_name, status, |
| 1490 | "Failed to flush delayed send")); |
| 1491 | goto on_error; |
| 1492 | } |
| 1493 | } else if (status != PJ_EPENDING) { |
| 1494 | PJ_PERROR(1,(ssock->pool->obj_name, status, |
| 1495 | "Renegotiation failed")); |
| 1496 | goto on_error; |
| 1497 | } |
| 1498 | |
| 1499 | break; |
| 1500 | } |
| 1501 | } while (1); |
| 1502 | } |
| 1503 | |
| 1504 | return PJ_TRUE; |
| 1505 | |
| 1506 | on_error: |
| 1507 | if (ssock->ssl_state == SSL_STATE_HANDSHAKING) |
| 1508 | return on_handshake_complete(ssock, status); |
| 1509 | |
| 1510 | if (ssock->read_started && ssock->param.cb.on_data_read) { |
| 1511 | pj_bool_t ret; |
| 1512 | ret = (*ssock->param.cb.on_data_read)(ssock, NULL, 0, status, |
| 1513 | remainder); |
| 1514 | if (!ret) { |
| 1515 | /* We've been destroyed */ |
| 1516 | return PJ_FALSE; |
| 1517 | } |
| 1518 | } |
| 1519 | |
| 1520 | reset_ssl_sock_state(ssock); |
| 1521 | return PJ_FALSE; |
| 1522 | } |
| 1523 | |
| 1524 | |
| 1525 | static pj_bool_t asock_on_data_sent (pj_activesock_t *asock, |
| 1526 | pj_ioqueue_op_key_t *send_key, |
| 1527 | pj_ssize_t sent) |
| 1528 | { |
| 1529 | pj_ssl_sock_t *ssock = (pj_ssl_sock_t*) |
| 1530 | pj_activesock_get_user_data(asock); |
| 1531 | |
| 1532 | PJ_UNUSED_ARG(send_key); |
| 1533 | PJ_UNUSED_ARG(sent); |
| 1534 | |
| 1535 | if (ssock->ssl_state == SSL_STATE_HANDSHAKING) { |
| 1536 | /* Initial handshaking */ |
| 1537 | pj_status_t status; |
| 1538 | |
| 1539 | status = do_handshake(ssock); |
| 1540 | /* Not pending is either success or failed */ |
| 1541 | if (status != PJ_EPENDING) |
| 1542 | return on_handshake_complete(ssock, status); |
| 1543 | |
| 1544 | } else if (send_key != &ssock->handshake_op_key) { |
| 1545 | /* Some data has been sent, notify application */ |
| 1546 | write_data_t *wdata = (write_data_t*)send_key->user_data; |
| 1547 | if (ssock->param.cb.on_data_sent) { |
| 1548 | pj_bool_t ret; |
| 1549 | pj_ssize_t sent_len; |
| 1550 | |
| 1551 | sent_len = (sent > 0)? wdata->plain_data_len : sent; |
| 1552 | ret = (*ssock->param.cb.on_data_sent)(ssock, wdata->app_key, |
| 1553 | sent_len); |
| 1554 | if (!ret) { |
| 1555 | /* We've been destroyed */ |
| 1556 | return PJ_FALSE; |
| 1557 | } |
| 1558 | } |
| 1559 | |
| 1560 | /* Update write buffer state */ |
| 1561 | pj_lock_acquire(ssock->write_mutex); |
| 1562 | free_send_data(ssock, wdata); |
| 1563 | pj_lock_release(ssock->write_mutex); |
| 1564 | |
| 1565 | } else { |
| 1566 | /* SSL re-negotiation is on-progress, just do nothing */ |
| 1567 | } |
| 1568 | |
| 1569 | return PJ_TRUE; |
| 1570 | } |
| 1571 | |
| 1572 | |
| 1573 | static pj_bool_t asock_on_accept_complete (pj_activesock_t *asock, |
| 1574 | pj_sock_t newsock, |
| 1575 | const pj_sockaddr_t *src_addr, |
| 1576 | int src_addr_len) |
| 1577 | { |
| 1578 | pj_ssl_sock_t *ssock_parent = (pj_ssl_sock_t*) |
| 1579 | pj_activesock_get_user_data(asock); |
| 1580 | pj_ssl_sock_t *ssock; |
| 1581 | pj_activesock_cb asock_cb; |
| 1582 | pj_activesock_cfg asock_cfg; |
| 1583 | unsigned i; |
| 1584 | pj_status_t status; |
| 1585 | |
| 1586 | PJ_UNUSED_ARG(src_addr_len); |
| 1587 | |
| 1588 | /* Create new SSL socket instance */ |
| 1589 | status = pj_ssl_sock_create(ssock_parent->pool, &ssock_parent->param, |
| 1590 | &ssock); |
| 1591 | if (status != PJ_SUCCESS) |
| 1592 | goto on_return; |
| 1593 | |
| 1594 | /* Update new SSL socket attributes */ |
| 1595 | ssock->sock = newsock; |
| 1596 | ssock->parent = ssock_parent; |
| 1597 | ssock->is_server = PJ_TRUE; |
| 1598 | if (ssock_parent->cert) { |
| 1599 | status = pj_ssl_sock_set_certificate(ssock, ssock->pool, |
| 1600 | ssock_parent->cert); |
| 1601 | if (status != PJ_SUCCESS) |
| 1602 | goto on_return; |
| 1603 | } |
| 1604 | |
| 1605 | /* Apply QoS, if specified */ |
| 1606 | status = pj_sock_apply_qos2(ssock->sock, ssock->param.qos_type, |
| 1607 | &ssock->param.qos_params, 1, |
| 1608 | ssock->pool->obj_name, NULL); |
| 1609 | if (status != PJ_SUCCESS && !ssock->param.qos_ignore_error) |
| 1610 | goto on_return; |
| 1611 | |
| 1612 | /* Update local address */ |
| 1613 | ssock->addr_len = src_addr_len; |
| 1614 | status = pj_sock_getsockname(ssock->sock, &ssock->local_addr, |
| 1615 | &ssock->addr_len); |
| 1616 | if (status != PJ_SUCCESS) { |
| 1617 | /* This fails on few envs, e.g: win IOCP, just tolerate this and |
| 1618 | * use parent local address instead. |
| 1619 | */ |
| 1620 | pj_sockaddr_cp(&ssock->local_addr, &ssock_parent->local_addr); |
| 1621 | } |
| 1622 | |
| 1623 | /* Set remote address */ |
| 1624 | pj_sockaddr_cp(&ssock->rem_addr, src_addr); |
| 1625 | |
| 1626 | /* Create SSL context */ |
| 1627 | status = create_ssl(ssock); |
| 1628 | if (status != PJ_SUCCESS) |
| 1629 | goto on_return; |
| 1630 | |
| 1631 | /* Prepare read buffer */ |
| 1632 | ssock->asock_rbuf = (void**)pj_pool_calloc(ssock->pool, |
| 1633 | ssock->param.async_cnt, |
| 1634 | sizeof(void*)); |
| 1635 | for (i = 0; i<ssock->param.async_cnt; ++i) { |
| 1636 | ssock->asock_rbuf[i] = (void*) pj_pool_alloc( |
| 1637 | ssock->pool, |
| 1638 | ssock->param.read_buffer_size + |
| 1639 | sizeof(read_data_t*)); |
| 1640 | } |
| 1641 | |
| 1642 | /* Create active socket */ |
| 1643 | pj_activesock_cfg_default(&asock_cfg); |
| 1644 | asock_cfg.async_cnt = ssock->param.async_cnt; |
| 1645 | asock_cfg.concurrency = ssock->param.concurrency; |
| 1646 | asock_cfg.whole_data = PJ_TRUE; |
| 1647 | |
| 1648 | pj_bzero(&asock_cb, sizeof(asock_cb)); |
| 1649 | asock_cb.on_data_read = asock_on_data_read; |
| 1650 | asock_cb.on_data_sent = asock_on_data_sent; |
| 1651 | |
| 1652 | status = pj_activesock_create(ssock->pool, |
| 1653 | ssock->sock, |
| 1654 | ssock->param.sock_type, |
| 1655 | &asock_cfg, |
| 1656 | ssock->param.ioqueue, |
| 1657 | &asock_cb, |
| 1658 | ssock, |
| 1659 | &ssock->asock); |
| 1660 | |
| 1661 | if (status != PJ_SUCCESS) |
| 1662 | goto on_return; |
| 1663 | |
| 1664 | /* Start read */ |
| 1665 | status = pj_activesock_start_read2(ssock->asock, ssock->pool, |
| 1666 | (unsigned)ssock->param.read_buffer_size, |
| 1667 | ssock->asock_rbuf, |
| 1668 | PJ_IOQUEUE_ALWAYS_ASYNC); |
| 1669 | if (status != PJ_SUCCESS) |
| 1670 | goto on_return; |
| 1671 | |
| 1672 | /* Prepare write/send state */ |
| 1673 | pj_assert(ssock->send_buf.max_len == 0); |
| 1674 | ssock->send_buf.buf = (char*) |
| 1675 | pj_pool_alloc(ssock->pool, |
| 1676 | ssock->param.send_buffer_size); |
| 1677 | ssock->send_buf.max_len = ssock->param.send_buffer_size; |
| 1678 | ssock->send_buf.start = ssock->send_buf.buf; |
| 1679 | ssock->send_buf.len = 0; |
| 1680 | |
| 1681 | /* Start handshake timer */ |
| 1682 | if (ssock->param.timer_heap && (ssock->param.timeout.sec != 0 || |
| 1683 | ssock->param.timeout.msec != 0)) |
| 1684 | { |
| 1685 | pj_assert(ssock->timer.id == TIMER_NONE); |
| 1686 | ssock->timer.id = TIMER_HANDSHAKE_TIMEOUT; |
| 1687 | status = pj_timer_heap_schedule(ssock->param.timer_heap, |
| 1688 | &ssock->timer, |
| 1689 | &ssock->param.timeout); |
| 1690 | if (status != PJ_SUCCESS) |
| 1691 | ssock->timer.id = TIMER_NONE; |
| 1692 | } |
| 1693 | |
| 1694 | /* Start SSL handshake */ |
| 1695 | ssock->ssl_state = SSL_STATE_HANDSHAKING; |
| 1696 | SSL_set_accept_state(ssock->ossl_ssl); |
| 1697 | status = do_handshake(ssock); |
| 1698 | |
| 1699 | on_return: |
| 1700 | if (ssock && status != PJ_EPENDING) |
| 1701 | on_handshake_complete(ssock, status); |
| 1702 | |
| 1703 | /* Must return PJ_TRUE whatever happened, as active socket must |
| 1704 | * continue listening. |
| 1705 | */ |
| 1706 | return PJ_TRUE; |
| 1707 | } |
| 1708 | |
| 1709 | |
| 1710 | static pj_bool_t asock_on_connect_complete (pj_activesock_t *asock, |
| 1711 | pj_status_t status) |
| 1712 | { |
| 1713 | pj_ssl_sock_t *ssock = (pj_ssl_sock_t*) |
| 1714 | pj_activesock_get_user_data(asock); |
| 1715 | unsigned i; |
| 1716 | |
| 1717 | if (status != PJ_SUCCESS) |
| 1718 | goto on_return; |
| 1719 | |
| 1720 | /* Update local address */ |
| 1721 | ssock->addr_len = sizeof(pj_sockaddr); |
| 1722 | status = pj_sock_getsockname(ssock->sock, &ssock->local_addr, |
| 1723 | &ssock->addr_len); |
| 1724 | if (status != PJ_SUCCESS) |
| 1725 | goto on_return; |
| 1726 | |
| 1727 | /* Create SSL context */ |
| 1728 | status = create_ssl(ssock); |
| 1729 | if (status != PJ_SUCCESS) |
| 1730 | goto on_return; |
| 1731 | |
| 1732 | /* Prepare read buffer */ |
| 1733 | ssock->asock_rbuf = (void**)pj_pool_calloc(ssock->pool, |
| 1734 | ssock->param.async_cnt, |
| 1735 | sizeof(void*)); |
| 1736 | for (i = 0; i<ssock->param.async_cnt; ++i) { |
| 1737 | ssock->asock_rbuf[i] = (void*) pj_pool_alloc( |
| 1738 | ssock->pool, |
| 1739 | ssock->param.read_buffer_size + |
| 1740 | sizeof(read_data_t*)); |
| 1741 | } |
| 1742 | |
| 1743 | /* Start read */ |
| 1744 | status = pj_activesock_start_read2(ssock->asock, ssock->pool, |
| 1745 | (unsigned)ssock->param.read_buffer_size, |
| 1746 | ssock->asock_rbuf, |
| 1747 | PJ_IOQUEUE_ALWAYS_ASYNC); |
| 1748 | if (status != PJ_SUCCESS) |
| 1749 | goto on_return; |
| 1750 | |
| 1751 | /* Prepare write/send state */ |
| 1752 | pj_assert(ssock->send_buf.max_len == 0); |
| 1753 | ssock->send_buf.buf = (char*) |
| 1754 | pj_pool_alloc(ssock->pool, |
| 1755 | ssock->param.send_buffer_size); |
| 1756 | ssock->send_buf.max_len = ssock->param.send_buffer_size; |
| 1757 | ssock->send_buf.start = ssock->send_buf.buf; |
| 1758 | ssock->send_buf.len = 0; |
| 1759 | |
| 1760 | #ifdef SSL_set_tlsext_host_name |
| 1761 | /* Set server name to connect */ |
| 1762 | if (ssock->param.server_name.slen) { |
| 1763 | /* Server name is null terminated already */ |
| 1764 | if (!SSL_set_tlsext_host_name(ssock->ossl_ssl, |
| 1765 | ssock->param.server_name.ptr)) |
| 1766 | { |
| 1767 | char err_str[PJ_ERR_MSG_SIZE]; |
| 1768 | |
| 1769 | ERR_error_string_n(ERR_get_error(), err_str, sizeof(err_str)); |
| 1770 | PJ_LOG(3,(ssock->pool->obj_name, "SSL_set_tlsext_host_name() " |
| 1771 | "failed: %s", err_str)); |
| 1772 | } |
| 1773 | } |
| 1774 | #endif |
| 1775 | |
| 1776 | /* Start SSL handshake */ |
| 1777 | ssock->ssl_state = SSL_STATE_HANDSHAKING; |
| 1778 | SSL_set_connect_state(ssock->ossl_ssl); |
| 1779 | |
| 1780 | status = do_handshake(ssock); |
| 1781 | if (status != PJ_EPENDING) |
| 1782 | goto on_return; |
| 1783 | |
| 1784 | return PJ_TRUE; |
| 1785 | |
| 1786 | on_return: |
| 1787 | return on_handshake_complete(ssock, status); |
| 1788 | } |
| 1789 | |
| 1790 | |
| 1791 | |
| 1792 | /* |
| 1793 | ******************************************************************* |
| 1794 | * API |
| 1795 | ******************************************************************* |
| 1796 | */ |
| 1797 | |
| 1798 | /* Load credentials from files. */ |
| 1799 | PJ_DEF(pj_status_t) pj_ssl_cert_load_from_files (pj_pool_t *pool, |
| 1800 | const pj_str_t *CA_file, |
| 1801 | const pj_str_t *cert_file, |
| 1802 | const pj_str_t *privkey_file, |
| 1803 | const pj_str_t *privkey_pass, |
| 1804 | pj_ssl_cert_t **p_cert) |
| 1805 | { |
| 1806 | pj_ssl_cert_t *cert; |
| 1807 | |
| 1808 | PJ_ASSERT_RETURN(pool && CA_file && cert_file && privkey_file, PJ_EINVAL); |
| 1809 | |
| 1810 | cert = PJ_POOL_ZALLOC_T(pool, pj_ssl_cert_t); |
| 1811 | pj_strdup_with_null(pool, &cert->CA_file, CA_file); |
| 1812 | pj_strdup_with_null(pool, &cert->cert_file, cert_file); |
| 1813 | pj_strdup_with_null(pool, &cert->privkey_file, privkey_file); |
| 1814 | pj_strdup_with_null(pool, &cert->privkey_pass, privkey_pass); |
| 1815 | |
| 1816 | *p_cert = cert; |
| 1817 | |
| 1818 | return PJ_SUCCESS; |
| 1819 | } |
| 1820 | |
| 1821 | |
| 1822 | /* Set SSL socket credentials. */ |
| 1823 | PJ_DECL(pj_status_t) pj_ssl_sock_set_certificate( |
| 1824 | pj_ssl_sock_t *ssock, |
| 1825 | pj_pool_t *pool, |
| 1826 | const pj_ssl_cert_t *cert) |
| 1827 | { |
| 1828 | pj_ssl_cert_t *cert_; |
| 1829 | |
| 1830 | PJ_ASSERT_RETURN(ssock && pool && cert, PJ_EINVAL); |
| 1831 | |
| 1832 | cert_ = PJ_POOL_ZALLOC_T(pool, pj_ssl_cert_t); |
| 1833 | pj_memcpy(cert_, cert, sizeof(cert)); |
| 1834 | pj_strdup_with_null(pool, &cert_->CA_file, &cert->CA_file); |
| 1835 | pj_strdup_with_null(pool, &cert_->cert_file, &cert->cert_file); |
| 1836 | pj_strdup_with_null(pool, &cert_->privkey_file, &cert->privkey_file); |
| 1837 | pj_strdup_with_null(pool, &cert_->privkey_pass, &cert->privkey_pass); |
| 1838 | |
| 1839 | ssock->cert = cert_; |
| 1840 | |
| 1841 | return PJ_SUCCESS; |
| 1842 | } |
| 1843 | |
| 1844 | |
| 1845 | /* Get available ciphers. */ |
| 1846 | PJ_DEF(pj_status_t) pj_ssl_cipher_get_availables(pj_ssl_cipher ciphers[], |
| 1847 | unsigned *cipher_num) |
| 1848 | { |
| 1849 | unsigned i; |
| 1850 | |
| 1851 | PJ_ASSERT_RETURN(ciphers && cipher_num, PJ_EINVAL); |
| 1852 | |
| 1853 | if (openssl_cipher_num == 0) { |
| 1854 | init_openssl(); |
| 1855 | shutdown_openssl(); |
| 1856 | } |
| 1857 | |
| 1858 | if (openssl_cipher_num == 0) { |
| 1859 | *cipher_num = 0; |
| 1860 | return PJ_ENOTFOUND; |
| 1861 | } |
| 1862 | |
| 1863 | *cipher_num = PJ_MIN(*cipher_num, openssl_cipher_num); |
| 1864 | |
| 1865 | for (i = 0; i < *cipher_num; ++i) |
| 1866 | ciphers[i] = openssl_ciphers[i].id; |
| 1867 | |
| 1868 | return PJ_SUCCESS; |
| 1869 | } |
| 1870 | |
| 1871 | |
| 1872 | /* Get cipher name string */ |
| 1873 | PJ_DEF(const char*) pj_ssl_cipher_name(pj_ssl_cipher cipher) |
| 1874 | { |
| 1875 | unsigned i; |
| 1876 | |
| 1877 | if (openssl_cipher_num == 0) { |
| 1878 | init_openssl(); |
| 1879 | shutdown_openssl(); |
| 1880 | } |
| 1881 | |
| 1882 | for (i = 0; i < openssl_cipher_num; ++i) { |
| 1883 | if (cipher == openssl_ciphers[i].id) |
| 1884 | return openssl_ciphers[i].name; |
| 1885 | } |
| 1886 | |
| 1887 | return NULL; |
| 1888 | } |
| 1889 | |
| 1890 | /* Check if the specified cipher is supported by SSL/TLS backend. */ |
| 1891 | PJ_DEF(pj_bool_t) pj_ssl_cipher_is_supported(pj_ssl_cipher cipher) |
| 1892 | { |
| 1893 | unsigned i; |
| 1894 | |
| 1895 | if (openssl_cipher_num == 0) { |
| 1896 | init_openssl(); |
| 1897 | shutdown_openssl(); |
| 1898 | } |
| 1899 | |
| 1900 | for (i = 0; i < openssl_cipher_num; ++i) { |
| 1901 | if (cipher == openssl_ciphers[i].id) |
| 1902 | return PJ_TRUE; |
| 1903 | } |
| 1904 | |
| 1905 | return PJ_FALSE; |
| 1906 | } |
| 1907 | |
| 1908 | |
| 1909 | /* |
| 1910 | * Create SSL socket instance. |
| 1911 | */ |
| 1912 | PJ_DEF(pj_status_t) pj_ssl_sock_create (pj_pool_t *pool, |
| 1913 | const pj_ssl_sock_param *param, |
| 1914 | pj_ssl_sock_t **p_ssock) |
| 1915 | { |
| 1916 | pj_ssl_sock_t *ssock; |
| 1917 | pj_status_t status; |
| 1918 | |
| 1919 | PJ_ASSERT_RETURN(pool && param && p_ssock, PJ_EINVAL); |
| 1920 | PJ_ASSERT_RETURN(param->sock_type == pj_SOCK_STREAM(), PJ_ENOTSUP); |
| 1921 | |
| 1922 | pool = pj_pool_create(pool->factory, "ssl%p", 512, 512, NULL); |
| 1923 | |
| 1924 | /* Create secure socket */ |
| 1925 | ssock = PJ_POOL_ZALLOC_T(pool, pj_ssl_sock_t); |
| 1926 | ssock->pool = pool; |
| 1927 | ssock->sock = PJ_INVALID_SOCKET; |
| 1928 | ssock->ssl_state = SSL_STATE_NULL; |
| 1929 | pj_list_init(&ssock->write_pending); |
| 1930 | pj_list_init(&ssock->write_pending_empty); |
| 1931 | pj_list_init(&ssock->send_pending); |
| 1932 | pj_timer_entry_init(&ssock->timer, 0, ssock, &on_timer); |
| 1933 | pj_ioqueue_op_key_init(&ssock->handshake_op_key, |
| 1934 | sizeof(pj_ioqueue_op_key_t)); |
| 1935 | |
| 1936 | /* Create secure socket mutex */ |
| 1937 | status = pj_lock_create_recursive_mutex(pool, pool->obj_name, |
| 1938 | &ssock->write_mutex); |
| 1939 | if (status != PJ_SUCCESS) |
| 1940 | return status; |
| 1941 | |
| 1942 | /* Init secure socket param */ |
| 1943 | ssock->param = *param; |
| 1944 | ssock->param.read_buffer_size = ((ssock->param.read_buffer_size+7)>>3)<<3; |
| 1945 | if (param->ciphers_num > 0) { |
| 1946 | unsigned i; |
| 1947 | ssock->param.ciphers = (pj_ssl_cipher*) |
| 1948 | pj_pool_calloc(pool, param->ciphers_num, |
| 1949 | sizeof(pj_ssl_cipher)); |
| 1950 | for (i = 0; i < param->ciphers_num; ++i) |
| 1951 | ssock->param.ciphers[i] = param->ciphers[i]; |
| 1952 | } |
| 1953 | |
| 1954 | /* Server name must be null-terminated */ |
| 1955 | pj_strdup_with_null(pool, &ssock->param.server_name, |
| 1956 | ¶m->server_name); |
| 1957 | |
| 1958 | /* Finally */ |
| 1959 | *p_ssock = ssock; |
| 1960 | |
| 1961 | return PJ_SUCCESS; |
| 1962 | } |
| 1963 | |
| 1964 | |
| 1965 | /* |
| 1966 | * Close the secure socket. This will unregister the socket from the |
| 1967 | * ioqueue and ultimately close the socket. |
| 1968 | */ |
| 1969 | PJ_DEF(pj_status_t) pj_ssl_sock_close(pj_ssl_sock_t *ssock) |
| 1970 | { |
| 1971 | pj_pool_t *pool; |
| 1972 | |
| 1973 | PJ_ASSERT_RETURN(ssock, PJ_EINVAL); |
| 1974 | |
| 1975 | if (!ssock->pool) |
| 1976 | return PJ_SUCCESS; |
| 1977 | |
| 1978 | if (ssock->timer.id != TIMER_NONE) { |
| 1979 | pj_timer_heap_cancel(ssock->param.timer_heap, &ssock->timer); |
| 1980 | ssock->timer.id = TIMER_NONE; |
| 1981 | } |
| 1982 | |
| 1983 | reset_ssl_sock_state(ssock); |
| 1984 | pj_lock_destroy(ssock->write_mutex); |
| 1985 | |
| 1986 | pool = ssock->pool; |
| 1987 | ssock->pool = NULL; |
| 1988 | if (pool) |
| 1989 | pj_pool_release(pool); |
| 1990 | |
| 1991 | return PJ_SUCCESS; |
| 1992 | } |
| 1993 | |
| 1994 | |
| 1995 | /* |
| 1996 | * Associate arbitrary data with the secure socket. |
| 1997 | */ |
| 1998 | PJ_DEF(pj_status_t) pj_ssl_sock_set_user_data(pj_ssl_sock_t *ssock, |
| 1999 | void *user_data) |
| 2000 | { |
| 2001 | PJ_ASSERT_RETURN(ssock, PJ_EINVAL); |
| 2002 | |
| 2003 | ssock->param.user_data = user_data; |
| 2004 | return PJ_SUCCESS; |
| 2005 | } |
| 2006 | |
| 2007 | |
| 2008 | /* |
| 2009 | * Retrieve the user data previously associated with this secure |
| 2010 | * socket. |
| 2011 | */ |
| 2012 | PJ_DEF(void*) pj_ssl_sock_get_user_data(pj_ssl_sock_t *ssock) |
| 2013 | { |
| 2014 | PJ_ASSERT_RETURN(ssock, NULL); |
| 2015 | |
| 2016 | return ssock->param.user_data; |
| 2017 | } |
| 2018 | |
| 2019 | |
| 2020 | /* |
| 2021 | * Retrieve the local address and port used by specified SSL socket. |
| 2022 | */ |
| 2023 | PJ_DEF(pj_status_t) pj_ssl_sock_get_info (pj_ssl_sock_t *ssock, |
| 2024 | pj_ssl_sock_info *info) |
| 2025 | { |
| 2026 | pj_bzero(info, sizeof(*info)); |
| 2027 | |
| 2028 | /* Established flag */ |
| 2029 | info->established = (ssock->ssl_state == SSL_STATE_ESTABLISHED); |
| 2030 | |
| 2031 | /* Protocol */ |
| 2032 | info->proto = ssock->param.proto; |
| 2033 | |
| 2034 | /* Local address */ |
| 2035 | pj_sockaddr_cp(&info->local_addr, &ssock->local_addr); |
| 2036 | |
| 2037 | if (info->established) { |
| 2038 | const SSL_CIPHER *cipher; |
| 2039 | |
| 2040 | /* Current cipher */ |
| 2041 | cipher = SSL_get_current_cipher(ssock->ossl_ssl); |
| 2042 | info->cipher = (cipher->id & 0x00FFFFFF); |
| 2043 | |
| 2044 | /* Remote address */ |
| 2045 | pj_sockaddr_cp(&info->remote_addr, &ssock->rem_addr); |
| 2046 | |
| 2047 | /* Certificates info */ |
| 2048 | info->local_cert_info = &ssock->local_cert_info; |
| 2049 | info->remote_cert_info = &ssock->remote_cert_info; |
| 2050 | |
| 2051 | /* Verification status */ |
| 2052 | info->verify_status = ssock->verify_status; |
| 2053 | } |
| 2054 | |
| 2055 | /* Last known OpenSSL error code */ |
| 2056 | info->last_native_err = ssock->last_err; |
| 2057 | |
| 2058 | return PJ_SUCCESS; |
| 2059 | } |
| 2060 | |
| 2061 | |
| 2062 | /* |
| 2063 | * Starts read operation on this secure socket. |
| 2064 | */ |
| 2065 | PJ_DEF(pj_status_t) pj_ssl_sock_start_read (pj_ssl_sock_t *ssock, |
| 2066 | pj_pool_t *pool, |
| 2067 | unsigned buff_size, |
| 2068 | pj_uint32_t flags) |
| 2069 | { |
| 2070 | void **readbuf; |
| 2071 | unsigned i; |
| 2072 | |
| 2073 | PJ_ASSERT_RETURN(ssock && pool && buff_size, PJ_EINVAL); |
| 2074 | PJ_ASSERT_RETURN(ssock->ssl_state==SSL_STATE_ESTABLISHED, PJ_EINVALIDOP); |
| 2075 | |
| 2076 | readbuf = (void**) pj_pool_calloc(pool, ssock->param.async_cnt, |
| 2077 | sizeof(void*)); |
| 2078 | |
| 2079 | for (i=0; i<ssock->param.async_cnt; ++i) { |
| 2080 | readbuf[i] = pj_pool_alloc(pool, buff_size); |
| 2081 | } |
| 2082 | |
| 2083 | return pj_ssl_sock_start_read2(ssock, pool, buff_size, |
| 2084 | readbuf, flags); |
| 2085 | } |
| 2086 | |
| 2087 | |
| 2088 | /* |
| 2089 | * Same as #pj_ssl_sock_start_read(), except that the application |
| 2090 | * supplies the buffers for the read operation so that the acive socket |
| 2091 | * does not have to allocate the buffers. |
| 2092 | */ |
| 2093 | PJ_DEF(pj_status_t) pj_ssl_sock_start_read2 (pj_ssl_sock_t *ssock, |
| 2094 | pj_pool_t *pool, |
| 2095 | unsigned buff_size, |
| 2096 | void *readbuf[], |
| 2097 | pj_uint32_t flags) |
| 2098 | { |
| 2099 | unsigned i; |
| 2100 | |
| 2101 | PJ_ASSERT_RETURN(ssock && pool && buff_size && readbuf, PJ_EINVAL); |
| 2102 | PJ_ASSERT_RETURN(ssock->ssl_state==SSL_STATE_ESTABLISHED, PJ_EINVALIDOP); |
| 2103 | |
| 2104 | /* Create SSL socket read buffer */ |
| 2105 | ssock->ssock_rbuf = (read_data_t*)pj_pool_calloc(pool, |
| 2106 | ssock->param.async_cnt, |
| 2107 | sizeof(read_data_t)); |
| 2108 | |
| 2109 | /* Store SSL socket read buffer pointer in the activesock read buffer */ |
| 2110 | for (i=0; i<ssock->param.async_cnt; ++i) { |
| 2111 | read_data_t **p_ssock_rbuf = |
| 2112 | OFFSET_OF_READ_DATA_PTR(ssock, ssock->asock_rbuf[i]); |
| 2113 | |
| 2114 | ssock->ssock_rbuf[i].data = readbuf[i]; |
| 2115 | ssock->ssock_rbuf[i].len = 0; |
| 2116 | |
| 2117 | *p_ssock_rbuf = &ssock->ssock_rbuf[i]; |
| 2118 | } |
| 2119 | |
| 2120 | ssock->read_size = buff_size; |
| 2121 | ssock->read_started = PJ_TRUE; |
| 2122 | ssock->read_flags = flags; |
| 2123 | |
| 2124 | return PJ_SUCCESS; |
| 2125 | } |
| 2126 | |
| 2127 | |
| 2128 | /* |
| 2129 | * Same as pj_ssl_sock_start_read(), except that this function is used |
| 2130 | * only for datagram sockets, and it will trigger \a on_data_recvfrom() |
| 2131 | * callback instead. |
| 2132 | */ |
| 2133 | PJ_DEF(pj_status_t) pj_ssl_sock_start_recvfrom (pj_ssl_sock_t *ssock, |
| 2134 | pj_pool_t *pool, |
| 2135 | unsigned buff_size, |
| 2136 | pj_uint32_t flags) |
| 2137 | { |
| 2138 | PJ_UNUSED_ARG(ssock); |
| 2139 | PJ_UNUSED_ARG(pool); |
| 2140 | PJ_UNUSED_ARG(buff_size); |
| 2141 | PJ_UNUSED_ARG(flags); |
| 2142 | |
| 2143 | return PJ_ENOTSUP; |
| 2144 | } |
| 2145 | |
| 2146 | |
| 2147 | /* |
| 2148 | * Same as #pj_ssl_sock_start_recvfrom() except that the recvfrom() |
| 2149 | * operation takes the buffer from the argument rather than creating |
| 2150 | * new ones. |
| 2151 | */ |
| 2152 | PJ_DEF(pj_status_t) pj_ssl_sock_start_recvfrom2 (pj_ssl_sock_t *ssock, |
| 2153 | pj_pool_t *pool, |
| 2154 | unsigned buff_size, |
| 2155 | void *readbuf[], |
| 2156 | pj_uint32_t flags) |
| 2157 | { |
| 2158 | PJ_UNUSED_ARG(ssock); |
| 2159 | PJ_UNUSED_ARG(pool); |
| 2160 | PJ_UNUSED_ARG(buff_size); |
| 2161 | PJ_UNUSED_ARG(readbuf); |
| 2162 | PJ_UNUSED_ARG(flags); |
| 2163 | |
| 2164 | return PJ_ENOTSUP; |
| 2165 | } |
| 2166 | |
| 2167 | /* Write plain data to SSL and flush write BIO. */ |
| 2168 | static pj_status_t ssl_write(pj_ssl_sock_t *ssock, |
| 2169 | pj_ioqueue_op_key_t *send_key, |
| 2170 | const void *data, |
| 2171 | pj_ssize_t size, |
| 2172 | unsigned flags) |
| 2173 | { |
| 2174 | pj_status_t status; |
| 2175 | int nwritten; |
| 2176 | |
| 2177 | /* Write the plain data to SSL, after SSL encrypts it, write BIO will |
| 2178 | * contain the secured data to be sent via socket. Note that re- |
| 2179 | * negotitation may be on progress, so sending data should be delayed |
| 2180 | * until re-negotiation is completed. |
| 2181 | */ |
| 2182 | pj_lock_acquire(ssock->write_mutex); |
| 2183 | nwritten = SSL_write(ssock->ossl_ssl, data, (int)size); |
| 2184 | pj_lock_release(ssock->write_mutex); |
| 2185 | |
| 2186 | if (nwritten == size) { |
| 2187 | /* All data written, flush write BIO to network socket */ |
| 2188 | status = flush_write_bio(ssock, send_key, size, flags); |
| 2189 | } else if (nwritten <= 0) { |
| 2190 | /* SSL failed to process the data, it may just that re-negotiation |
| 2191 | * is on progress. |
| 2192 | */ |
| 2193 | int err; |
| 2194 | err = SSL_get_error(ssock->ossl_ssl, nwritten); |
| 2195 | if (err == SSL_ERROR_WANT_READ || err == SSL_ERROR_NONE) { |
| 2196 | /* Re-negotiation is on progress, flush re-negotiation data */ |
| 2197 | status = flush_write_bio(ssock, &ssock->handshake_op_key, 0, 0); |
| 2198 | if (status == PJ_SUCCESS || status == PJ_EPENDING) |
| 2199 | /* Just return PJ_EBUSY when re-negotiation is on progress */ |
| 2200 | status = PJ_EBUSY; |
| 2201 | } else { |
| 2202 | /* Some problem occured */ |
| 2203 | status = STATUS_FROM_SSL_ERR(ssock, err); |
| 2204 | } |
| 2205 | } else { |
| 2206 | /* nwritten < *size, shouldn't happen, unless write BIO cannot hold |
| 2207 | * the whole secured data, perhaps because of insufficient memory. |
| 2208 | */ |
| 2209 | status = PJ_ENOMEM; |
| 2210 | } |
| 2211 | |
| 2212 | return status; |
| 2213 | } |
| 2214 | |
| 2215 | /* Flush delayed data sending in the write pending list. */ |
| 2216 | static pj_status_t flush_delayed_send(pj_ssl_sock_t *ssock) |
| 2217 | { |
| 2218 | /* Check for another ongoing flush */ |
| 2219 | if (ssock->flushing_write_pend) |
| 2220 | return PJ_EBUSY; |
| 2221 | |
| 2222 | pj_lock_acquire(ssock->write_mutex); |
| 2223 | |
| 2224 | /* Again, check for another ongoing flush */ |
| 2225 | if (ssock->flushing_write_pend) { |
| 2226 | pj_lock_release(ssock->write_mutex); |
| 2227 | return PJ_EBUSY; |
| 2228 | } |
| 2229 | |
| 2230 | /* Set ongoing flush flag */ |
| 2231 | ssock->flushing_write_pend = PJ_TRUE; |
| 2232 | |
| 2233 | while (!pj_list_empty(&ssock->write_pending)) { |
| 2234 | write_data_t *wp; |
| 2235 | pj_status_t status; |
| 2236 | |
| 2237 | wp = ssock->write_pending.next; |
| 2238 | |
| 2239 | /* Ticket #1573: Don't hold mutex while calling socket send. */ |
| 2240 | pj_lock_release(ssock->write_mutex); |
| 2241 | |
| 2242 | status = ssl_write(ssock, &wp->key, wp->data.ptr, |
| 2243 | wp->plain_data_len, wp->flags); |
| 2244 | if (status != PJ_SUCCESS) { |
| 2245 | /* Reset ongoing flush flag first. */ |
| 2246 | ssock->flushing_write_pend = PJ_FALSE; |
| 2247 | return status; |
| 2248 | } |
| 2249 | |
| 2250 | pj_lock_acquire(ssock->write_mutex); |
| 2251 | pj_list_erase(wp); |
| 2252 | pj_list_push_back(&ssock->write_pending_empty, wp); |
| 2253 | } |
| 2254 | |
| 2255 | /* Reset ongoing flush flag */ |
| 2256 | ssock->flushing_write_pend = PJ_FALSE; |
| 2257 | |
| 2258 | pj_lock_release(ssock->write_mutex); |
| 2259 | |
| 2260 | return PJ_SUCCESS; |
| 2261 | } |
| 2262 | |
| 2263 | /* Sending is delayed, push back the sending data into pending list. */ |
| 2264 | static pj_status_t delay_send (pj_ssl_sock_t *ssock, |
| 2265 | pj_ioqueue_op_key_t *send_key, |
| 2266 | const void *data, |
| 2267 | pj_ssize_t size, |
| 2268 | unsigned flags) |
| 2269 | { |
| 2270 | write_data_t *wp; |
| 2271 | |
| 2272 | pj_lock_acquire(ssock->write_mutex); |
| 2273 | |
| 2274 | /* Init write pending instance */ |
| 2275 | if (!pj_list_empty(&ssock->write_pending_empty)) { |
| 2276 | wp = ssock->write_pending_empty.next; |
| 2277 | pj_list_erase(wp); |
| 2278 | } else { |
| 2279 | wp = PJ_POOL_ZALLOC_T(ssock->pool, write_data_t); |
| 2280 | } |
| 2281 | |
| 2282 | wp->app_key = send_key; |
| 2283 | wp->plain_data_len = size; |
| 2284 | wp->data.ptr = data; |
| 2285 | wp->flags = flags; |
| 2286 | |
| 2287 | pj_list_push_back(&ssock->write_pending, wp); |
| 2288 | |
| 2289 | pj_lock_release(ssock->write_mutex); |
| 2290 | |
| 2291 | /* Must return PJ_EPENDING */ |
| 2292 | return PJ_EPENDING; |
| 2293 | } |
| 2294 | |
| 2295 | /** |
| 2296 | * Send data using the socket. |
| 2297 | */ |
| 2298 | PJ_DEF(pj_status_t) pj_ssl_sock_send (pj_ssl_sock_t *ssock, |
| 2299 | pj_ioqueue_op_key_t *send_key, |
| 2300 | const void *data, |
| 2301 | pj_ssize_t *size, |
| 2302 | unsigned flags) |
| 2303 | { |
| 2304 | pj_status_t status; |
| 2305 | |
| 2306 | PJ_ASSERT_RETURN(ssock && data && size && (*size>0), PJ_EINVAL); |
| 2307 | PJ_ASSERT_RETURN(ssock->ssl_state==SSL_STATE_ESTABLISHED, PJ_EINVALIDOP); |
| 2308 | |
| 2309 | // Ticket #1573: Don't hold mutex while calling PJLIB socket send(). |
| 2310 | //pj_lock_acquire(ssock->write_mutex); |
| 2311 | |
| 2312 | /* Flush delayed send first. Sending data might be delayed when |
| 2313 | * re-negotiation is on-progress. |
| 2314 | */ |
| 2315 | status = flush_delayed_send(ssock); |
| 2316 | if (status == PJ_EBUSY) { |
| 2317 | /* Re-negotiation or flushing is on progress, delay sending */ |
| 2318 | status = delay_send(ssock, send_key, data, *size, flags); |
| 2319 | goto on_return; |
| 2320 | } else if (status != PJ_SUCCESS) { |
| 2321 | goto on_return; |
| 2322 | } |
| 2323 | |
| 2324 | /* Write data to SSL */ |
| 2325 | status = ssl_write(ssock, send_key, data, *size, flags); |
| 2326 | if (status == PJ_EBUSY) { |
| 2327 | /* Re-negotiation is on progress, delay sending */ |
| 2328 | status = delay_send(ssock, send_key, data, *size, flags); |
| 2329 | } |
| 2330 | |
| 2331 | on_return: |
| 2332 | //pj_lock_release(ssock->write_mutex); |
| 2333 | return status; |
| 2334 | } |
| 2335 | |
| 2336 | |
| 2337 | /** |
| 2338 | * Send datagram using the socket. |
| 2339 | */ |
| 2340 | PJ_DEF(pj_status_t) pj_ssl_sock_sendto (pj_ssl_sock_t *ssock, |
| 2341 | pj_ioqueue_op_key_t *send_key, |
| 2342 | const void *data, |
| 2343 | pj_ssize_t *size, |
| 2344 | unsigned flags, |
| 2345 | const pj_sockaddr_t *addr, |
| 2346 | int addr_len) |
| 2347 | { |
| 2348 | PJ_UNUSED_ARG(ssock); |
| 2349 | PJ_UNUSED_ARG(send_key); |
| 2350 | PJ_UNUSED_ARG(data); |
| 2351 | PJ_UNUSED_ARG(size); |
| 2352 | PJ_UNUSED_ARG(flags); |
| 2353 | PJ_UNUSED_ARG(addr); |
| 2354 | PJ_UNUSED_ARG(addr_len); |
| 2355 | |
| 2356 | return PJ_ENOTSUP; |
| 2357 | } |
| 2358 | |
| 2359 | |
| 2360 | /** |
| 2361 | * Starts asynchronous socket accept() operations on this secure socket. |
| 2362 | */ |
| 2363 | PJ_DEF(pj_status_t) pj_ssl_sock_start_accept (pj_ssl_sock_t *ssock, |
| 2364 | pj_pool_t *pool, |
| 2365 | const pj_sockaddr_t *localaddr, |
| 2366 | int addr_len) |
| 2367 | { |
| 2368 | pj_activesock_cb asock_cb; |
| 2369 | pj_activesock_cfg asock_cfg; |
| 2370 | pj_status_t status; |
| 2371 | |
| 2372 | PJ_ASSERT_RETURN(ssock && pool && localaddr && addr_len, PJ_EINVAL); |
| 2373 | |
| 2374 | /* Create socket */ |
| 2375 | status = pj_sock_socket(ssock->param.sock_af, ssock->param.sock_type, 0, |
| 2376 | &ssock->sock); |
| 2377 | if (status != PJ_SUCCESS) |
| 2378 | goto on_error; |
| 2379 | |
| 2380 | /* Apply SO_REUSEADDR */ |
| 2381 | if (ssock->param.reuse_addr) { |
| 2382 | int enabled = 1; |
| 2383 | status = pj_sock_setsockopt(ssock->sock, pj_SOL_SOCKET(), |
| 2384 | pj_SO_REUSEADDR(), |
| 2385 | &enabled, sizeof(enabled)); |
| 2386 | if (status != PJ_SUCCESS) { |
| 2387 | PJ_PERROR(4,(ssock->pool->obj_name, status, |
| 2388 | "Warning: error applying SO_REUSEADDR")); |
| 2389 | } |
| 2390 | } |
| 2391 | |
| 2392 | /* Apply QoS, if specified */ |
| 2393 | status = pj_sock_apply_qos2(ssock->sock, ssock->param.qos_type, |
| 2394 | &ssock->param.qos_params, 2, |
| 2395 | ssock->pool->obj_name, NULL); |
| 2396 | if (status != PJ_SUCCESS && !ssock->param.qos_ignore_error) |
| 2397 | goto on_error; |
| 2398 | |
| 2399 | /* Bind socket */ |
| 2400 | status = pj_sock_bind(ssock->sock, localaddr, addr_len); |
| 2401 | if (status != PJ_SUCCESS) |
| 2402 | goto on_error; |
| 2403 | |
| 2404 | /* Start listening to the address */ |
| 2405 | status = pj_sock_listen(ssock->sock, PJ_SOMAXCONN); |
| 2406 | if (status != PJ_SUCCESS) |
| 2407 | goto on_error; |
| 2408 | |
| 2409 | /* Create active socket */ |
| 2410 | pj_activesock_cfg_default(&asock_cfg); |
| 2411 | asock_cfg.async_cnt = ssock->param.async_cnt; |
| 2412 | asock_cfg.concurrency = ssock->param.concurrency; |
| 2413 | asock_cfg.whole_data = PJ_TRUE; |
| 2414 | |
| 2415 | pj_bzero(&asock_cb, sizeof(asock_cb)); |
| 2416 | asock_cb.on_accept_complete = asock_on_accept_complete; |
| 2417 | |
| 2418 | status = pj_activesock_create(pool, |
| 2419 | ssock->sock, |
| 2420 | ssock->param.sock_type, |
| 2421 | &asock_cfg, |
| 2422 | ssock->param.ioqueue, |
| 2423 | &asock_cb, |
| 2424 | ssock, |
| 2425 | &ssock->asock); |
| 2426 | |
| 2427 | if (status != PJ_SUCCESS) |
| 2428 | goto on_error; |
| 2429 | |
| 2430 | /* Start accepting */ |
| 2431 | status = pj_activesock_start_accept(ssock->asock, pool); |
| 2432 | if (status != PJ_SUCCESS) |
| 2433 | goto on_error; |
| 2434 | |
| 2435 | /* Update local address */ |
| 2436 | ssock->addr_len = addr_len; |
| 2437 | status = pj_sock_getsockname(ssock->sock, &ssock->local_addr, |
| 2438 | &ssock->addr_len); |
| 2439 | if (status != PJ_SUCCESS) |
| 2440 | pj_sockaddr_cp(&ssock->local_addr, localaddr); |
| 2441 | |
| 2442 | ssock->is_server = PJ_TRUE; |
| 2443 | |
| 2444 | return PJ_SUCCESS; |
| 2445 | |
| 2446 | on_error: |
| 2447 | reset_ssl_sock_state(ssock); |
| 2448 | return status; |
| 2449 | } |
| 2450 | |
| 2451 | |
| 2452 | /** |
| 2453 | * Starts asynchronous socket connect() operation. |
| 2454 | */ |
| 2455 | PJ_DECL(pj_status_t) pj_ssl_sock_start_connect(pj_ssl_sock_t *ssock, |
| 2456 | pj_pool_t *pool, |
| 2457 | const pj_sockaddr_t *localaddr, |
| 2458 | const pj_sockaddr_t *remaddr, |
| 2459 | int addr_len) |
| 2460 | { |
| 2461 | pj_activesock_cb asock_cb; |
| 2462 | pj_activesock_cfg asock_cfg; |
| 2463 | pj_status_t status; |
| 2464 | |
| 2465 | PJ_ASSERT_RETURN(ssock && pool && localaddr && remaddr && addr_len, |
| 2466 | PJ_EINVAL); |
| 2467 | |
| 2468 | /* Create socket */ |
| 2469 | status = pj_sock_socket(ssock->param.sock_af, ssock->param.sock_type, 0, |
| 2470 | &ssock->sock); |
| 2471 | if (status != PJ_SUCCESS) |
| 2472 | goto on_error; |
| 2473 | |
| 2474 | /* Apply QoS, if specified */ |
| 2475 | status = pj_sock_apply_qos2(ssock->sock, ssock->param.qos_type, |
| 2476 | &ssock->param.qos_params, 2, |
| 2477 | ssock->pool->obj_name, NULL); |
| 2478 | if (status != PJ_SUCCESS && !ssock->param.qos_ignore_error) |
| 2479 | goto on_error; |
| 2480 | |
| 2481 | /* Bind socket */ |
| 2482 | status = pj_sock_bind(ssock->sock, localaddr, addr_len); |
| 2483 | if (status != PJ_SUCCESS) |
| 2484 | goto on_error; |
| 2485 | |
| 2486 | /* Create active socket */ |
| 2487 | pj_activesock_cfg_default(&asock_cfg); |
| 2488 | asock_cfg.async_cnt = ssock->param.async_cnt; |
| 2489 | asock_cfg.concurrency = ssock->param.concurrency; |
| 2490 | asock_cfg.whole_data = PJ_TRUE; |
| 2491 | |
| 2492 | pj_bzero(&asock_cb, sizeof(asock_cb)); |
| 2493 | asock_cb.on_connect_complete = asock_on_connect_complete; |
| 2494 | asock_cb.on_data_read = asock_on_data_read; |
| 2495 | asock_cb.on_data_sent = asock_on_data_sent; |
| 2496 | |
| 2497 | status = pj_activesock_create(pool, |
| 2498 | ssock->sock, |
| 2499 | ssock->param.sock_type, |
| 2500 | &asock_cfg, |
| 2501 | ssock->param.ioqueue, |
| 2502 | &asock_cb, |
| 2503 | ssock, |
| 2504 | &ssock->asock); |
| 2505 | |
| 2506 | if (status != PJ_SUCCESS) |
| 2507 | goto on_error; |
| 2508 | |
| 2509 | /* Save remote address */ |
| 2510 | pj_sockaddr_cp(&ssock->rem_addr, remaddr); |
| 2511 | |
| 2512 | /* Start timer */ |
| 2513 | if (ssock->param.timer_heap && (ssock->param.timeout.sec != 0 || |
| 2514 | ssock->param.timeout.msec != 0)) |
| 2515 | { |
| 2516 | pj_assert(ssock->timer.id == TIMER_NONE); |
| 2517 | ssock->timer.id = TIMER_HANDSHAKE_TIMEOUT; |
| 2518 | status = pj_timer_heap_schedule(ssock->param.timer_heap, |
| 2519 | &ssock->timer, |
| 2520 | &ssock->param.timeout); |
| 2521 | if (status != PJ_SUCCESS) |
| 2522 | ssock->timer.id = TIMER_NONE; |
| 2523 | } |
| 2524 | |
| 2525 | status = pj_activesock_start_connect(ssock->asock, pool, remaddr, |
| 2526 | addr_len); |
| 2527 | |
| 2528 | if (status == PJ_SUCCESS) |
| 2529 | asock_on_connect_complete(ssock->asock, PJ_SUCCESS); |
| 2530 | else if (status != PJ_EPENDING) |
| 2531 | goto on_error; |
| 2532 | |
| 2533 | /* Update local address */ |
| 2534 | ssock->addr_len = addr_len; |
| 2535 | status = pj_sock_getsockname(ssock->sock, &ssock->local_addr, |
| 2536 | &ssock->addr_len); |
| 2537 | /* Note that we may not get an IP address here. This can |
| 2538 | * happen for example on Windows, where getsockname() |
| 2539 | * would return 0.0.0.0 if socket has just started the |
| 2540 | * async connect. In this case, just leave the local |
| 2541 | * address with 0.0.0.0 for now; it will be updated |
| 2542 | * once the socket is established. |
| 2543 | */ |
| 2544 | |
| 2545 | /* Update SSL state */ |
| 2546 | ssock->is_server = PJ_FALSE; |
| 2547 | |
| 2548 | return PJ_EPENDING; |
| 2549 | |
| 2550 | on_error: |
| 2551 | reset_ssl_sock_state(ssock); |
| 2552 | return status; |
| 2553 | } |
| 2554 | |
| 2555 | |
| 2556 | PJ_DEF(pj_status_t) pj_ssl_sock_renegotiate(pj_ssl_sock_t *ssock) |
| 2557 | { |
| 2558 | int ret; |
| 2559 | pj_status_t status; |
| 2560 | |
| 2561 | PJ_ASSERT_RETURN(ssock->ssl_state == SSL_STATE_ESTABLISHED, PJ_EINVALIDOP); |
| 2562 | |
| 2563 | if (SSL_renegotiate_pending(ssock->ossl_ssl)) |
| 2564 | return PJ_EPENDING; |
| 2565 | |
| 2566 | ret = SSL_renegotiate(ssock->ossl_ssl); |
| 2567 | if (ret <= 0) { |
| 2568 | status = GET_SSL_STATUS(ssock); |
| 2569 | } else { |
| 2570 | status = do_handshake(ssock); |
| 2571 | } |
| 2572 | |
| 2573 | return status; |
| 2574 | } |
| 2575 | |
| 2576 | #endif /* PJ_HAS_SSL_SOCK */ |
| 2577 | |