| File: | ws.c |
| Warning: | line 842, column 4 Value stored to 'code' is never read |
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| 1 | #include <switch.h> |
| 2 | #include "ws.h" |
| 3 | #include <pthread.h> |
| 4 | |
| 5 | #ifndef _MSC_VER |
| 6 | #include <fcntl.h> |
| 7 | #endif |
| 8 | |
| 9 | #if defined(__linux__1) || defined(__GLIBC__2) |
| 10 | #include <byteswap.h> |
| 11 | #endif |
| 12 | |
| 13 | #ifndef _MSC_VER |
| 14 | #define ms_sleep(x)usleep( x * 1000); usleep( x * 1000); |
| 15 | #else |
| 16 | #define ms_sleep(x)usleep( x * 1000); Sleep( x ); |
| 17 | #endif |
| 18 | |
| 19 | #ifdef _MSC_VER |
| 20 | /* warning C4706: assignment within conditional expression*/ |
| 21 | #pragma warning(disable: 4706) |
| 22 | #endif |
| 23 | |
| 24 | #define WS_BLOCK1 1 |
| 25 | #define WS_NOBLOCK0 0 |
| 26 | |
| 27 | #define WS_INIT_SANITY5000 5000 |
| 28 | #define WS_WRITE_SANITY200 200 |
| 29 | |
| 30 | #define SHA1_HASH_SIZE20 20 |
| 31 | static struct ws_globals_s ws_globals; |
| 32 | ssize_t ws_global_payload_size_max = 0; |
| 33 | |
| 34 | #ifndef WSS_STANDALONE |
| 35 | |
| 36 | void init_ssl(void) |
| 37 | { |
| 38 | // SSL_library_init(); |
| 39 | SSL_load_error_strings()OPENSSL_init_ssl(0x00200000L | 0x00000002L, ((void*)0)); |
| 40 | } |
| 41 | void deinit_ssl(void) |
| 42 | { |
| 43 | return; |
| 44 | } |
| 45 | |
| 46 | #else |
| 47 | static void pthreads_thread_id(CRYPTO_THREADID *id); |
| 48 | static void pthreads_locking_callback(int mode, int type, const char *file, int line); |
| 49 | |
| 50 | static pthread_mutex_t *lock_cs; |
| 51 | static long *lock_count; |
| 52 | |
| 53 | |
| 54 | |
| 55 | static void thread_setup(void) |
| 56 | { |
| 57 | int i; |
| 58 | |
| 59 | lock_cs = OPENSSL_malloc(CRYPTO_num_locks() * sizeof(pthread_mutex_t))CRYPTO_malloc((1) * sizeof(pthread_mutex_t), "ws.c", 59); |
| 60 | lock_count = OPENSSL_malloc(CRYPTO_num_locks() * sizeof(long))CRYPTO_malloc((1) * sizeof(long), "ws.c", 60); |
| 61 | |
| 62 | for (i = 0; i < CRYPTO_num_locks()(1); i++) { |
| 63 | lock_count[i] = 0; |
| 64 | pthread_mutex_init(&(lock_cs[i]), NULL((void*)0)); |
| 65 | } |
| 66 | |
| 67 | CRYPTO_THREADID_set_callback(pthreads_thread_id)(0); |
| 68 | CRYPTO_set_locking_callback(pthreads_locking_callback); |
| 69 | } |
| 70 | |
| 71 | static void thread_cleanup(void) |
| 72 | { |
| 73 | int i; |
| 74 | |
| 75 | CRYPTO_set_locking_callback(NULL); |
| 76 | |
| 77 | for (i=0; i<CRYPTO_num_locks()(1); i++) { |
| 78 | pthread_mutex_destroy(&(lock_cs[i])); |
| 79 | } |
| 80 | OPENSSL_free(lock_cs)CRYPTO_free(lock_cs, "ws.c", 80); |
| 81 | OPENSSL_free(lock_count)CRYPTO_free(lock_count, "ws.c", 81); |
| 82 | |
| 83 | } |
| 84 | |
| 85 | static void pthreads_locking_callback(int mode, int type, const char *file, int line) |
| 86 | { |
| 87 | |
| 88 | if (mode & CRYPTO_LOCK1) { |
| 89 | pthread_mutex_lock(&(lock_cs[type])); |
| 90 | lock_count[type]++; |
| 91 | } else { |
| 92 | pthread_mutex_unlock(&(lock_cs[type])); |
| 93 | } |
| 94 | } |
| 95 | |
| 96 | |
| 97 | |
| 98 | static void pthreads_thread_id(CRYPTO_THREADID *id) |
| 99 | { |
| 100 | CRYPTO_THREADID_set_numeric(id, (unsigned long)pthread_self()); |
| 101 | } |
| 102 | |
| 103 | |
| 104 | void init_ssl(void) { |
| 105 | SSL_library_init()OPENSSL_init_ssl(0, ((void*)0)); |
| 106 | |
| 107 | |
| 108 | OpenSSL_add_all_algorithms()OPENSSL_init_crypto(0x00000004L | 0x00000008L, ((void*)0)); /* load & register cryptos */ |
| 109 | SSL_load_error_strings()OPENSSL_init_ssl(0x00200000L | 0x00000002L, ((void*)0)); /* load all error messages */ |
| 110 | ws_globals.ssl_method = SSLv23_server_methodTLS_server_method(); /* create server instance */ |
| 111 | ws_globals.ssl_ctx = SSL_CTX_new(ws_globals.ssl_method); /* create context */ |
| 112 | assert(ws_globals.ssl_ctx)((void) sizeof ((ws_globals.ssl_ctx) ? 1 : 0), __extension__ ( { if (ws_globals.ssl_ctx) ; else __assert_fail ("ws_globals.ssl_ctx" , "ws.c", 112, __extension__ __PRETTY_FUNCTION__); })); |
| 113 | |
| 114 | /* Disable SSLv2 */ |
| 115 | SSL_CTX_set_options(ws_globals.ssl_ctx, SSL_OP_NO_SSLv20x0); |
| 116 | /* Disable SSLv3 */ |
| 117 | SSL_CTX_set_options(ws_globals.ssl_ctx, SSL_OP_NO_SSLv30x02000000U); |
| 118 | /* Disable TLSv1 */ |
| 119 | SSL_CTX_set_options(ws_globals.ssl_ctx, SSL_OP_NO_TLSv10x04000000U); |
| 120 | /* Disable Compression CRIME (Compression Ratio Info-leak Made Easy) */ |
| 121 | SSL_CTX_set_options(ws_globals.ssl_ctx, SSL_OP_NO_COMPRESSION0x00020000U); |
| 122 | /* set the local certificate from CertFile */ |
| 123 | SSL_CTX_use_certificate_file(ws_globals.ssl_ctx, ws_globals.cert, SSL_FILETYPE_PEM1); |
| 124 | /* set the private key from KeyFile */ |
| 125 | SSL_CTX_use_PrivateKey_file(ws_globals.ssl_ctx, ws_globals.key, SSL_FILETYPE_PEM1); |
| 126 | /* verify private key */ |
| 127 | if ( !SSL_CTX_check_private_key(ws_globals.ssl_ctx) ) { |
| 128 | abort(); |
| 129 | } |
| 130 | |
| 131 | SSL_CTX_set_cipher_list(ws_globals.ssl_ctx, "HIGH:!DSS:!aNULL@STRENGTH"); |
| 132 | |
| 133 | thread_setup(); |
| 134 | } |
| 135 | |
| 136 | |
| 137 | void deinit_ssl(void) { |
| 138 | thread_cleanup(); |
| 139 | } |
| 140 | |
| 141 | #endif |
| 142 | |
| 143 | static const char c64[65] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"; |
| 144 | |
| 145 | |
| 146 | static int cheezy_get_var(char *data, char *name, char *buf, size_t buflen) |
| 147 | { |
| 148 | char *p=data; |
| 149 | |
| 150 | /* the old way didnt make sure that variable values were used for the name hunt |
| 151 | * and didnt ensure that only a full match of the variable name was used |
| 152 | */ |
| 153 | |
| 154 | do { |
| 155 | if(!strncasecmp(p,name,strlen(name)) && *(p+strlen(name))==':') break; |
| 156 | } while((p = (strstr(p,"\n")+1))!=(char *)1); |
| 157 | |
| 158 | |
| 159 | if (p && p != (char *)1 && *p!='\0') { |
| 160 | char *v, *e = 0; |
| 161 | |
| 162 | v = strchr(p, ':'); |
| 163 | if (v) { |
| 164 | v++; |
| 165 | while(v && *v == ' ') { |
| 166 | v++; |
| 167 | } |
| 168 | if (v) { |
| 169 | e = strchr(v, '\r'); |
| 170 | if (!e) { |
| 171 | e = strchr(v, '\n'); |
| 172 | } |
| 173 | } |
| 174 | |
| 175 | if (v && e) { |
| 176 | int cplen; |
| 177 | size_t len = e - v; |
| 178 | |
| 179 | if (len > buflen - 1) { |
| 180 | cplen = buflen -1; |
| 181 | } else { |
| 182 | cplen = len; |
| 183 | } |
| 184 | |
| 185 | strncpy(buf, v, cplen); |
| 186 | *(buf+cplen) = '\0'; |
| 187 | return 1; |
| 188 | } |
| 189 | |
| 190 | } |
| 191 | } |
| 192 | return 0; |
| 193 | } |
| 194 | |
| 195 | static int b64encode(unsigned char *in, size_t ilen, unsigned char *out, size_t olen) |
| 196 | { |
| 197 | int y=0,bytes=0; |
| 198 | size_t x=0; |
| 199 | unsigned int b=0,l=0; |
| 200 | |
| 201 | if(olen) { |
| 202 | } |
| 203 | |
| 204 | for(x=0;x<ilen;x++) { |
| 205 | b = (b<<8) + in[x]; |
| 206 | l += 8; |
| 207 | while (l >= 6) { |
| 208 | out[bytes++] = c64[(b>>(l-=6))%64]; |
| 209 | if(++y!=72) { |
| 210 | continue; |
| 211 | } |
| 212 | //out[bytes++] = '\n'; |
| 213 | y=0; |
| 214 | } |
| 215 | } |
| 216 | |
| 217 | if (l > 0) { |
| 218 | out[bytes++] = c64[((b%16)<<(6-l))%64]; |
| 219 | } |
| 220 | if (l != 0) while (l < 6) { |
| 221 | out[bytes++] = '=', l += 2; |
| 222 | } |
| 223 | |
| 224 | return 0; |
| 225 | } |
| 226 | |
| 227 | #ifdef NO_OPENSSL |
| 228 | static void sha1_digest(char *digest, unsigned char *in) |
| 229 | { |
| 230 | SHA1Context sha; |
| 231 | char *p; |
| 232 | int x; |
| 233 | |
| 234 | |
| 235 | SHA1Init(&sha); |
| 236 | SHA1Update(&sha, in, strlen(in)); |
| 237 | SHA1Final(&sha, digest); |
| 238 | } |
| 239 | #else |
| 240 | |
| 241 | static void sha1_digest(unsigned char *digest, char *in) |
| 242 | { |
| 243 | SHA_CTX sha; |
| 244 | |
| 245 | SHA1_Init(&sha); |
| 246 | SHA1_Update(&sha, in, strlen(in)); |
| 247 | SHA1_Final(digest, &sha); |
| 248 | |
| 249 | } |
| 250 | |
| 251 | #endif |
| 252 | |
| 253 | int ws_handshake(wsh_t *wsh) |
| 254 | { |
| 255 | char key[256] = ""; |
| 256 | char version[5] = ""; |
| 257 | char proto[256] = ""; |
| 258 | char proto_buf[384] = ""; |
| 259 | char input[512] = ""; |
| 260 | unsigned char output[SHA1_HASH_SIZE20] = ""; |
| 261 | char b64[256] = ""; |
| 262 | char respond[1024] = ""; |
| 263 | ssize_t bytes; |
| 264 | char *p, *e = 0; |
| 265 | |
| 266 | if (wsh->sock == ws_sock_invalid(ws_socket_t)-1) { |
| 267 | return -3; |
| 268 | } |
| 269 | |
| 270 | while((bytes = ws_raw_read(wsh, wsh->buffer + wsh->datalen, wsh->buflen - wsh->datalen, WS_BLOCK1)) > 0) { |
| 271 | wsh->datalen += bytes; |
| 272 | if (strstr(wsh->buffer, "\r\n\r\n") || strstr(wsh->buffer, "\n\n")) { |
| 273 | break; |
| 274 | } |
| 275 | } |
| 276 | |
| 277 | if (bytes < 0 || bytes > wsh->buflen -1) { |
| 278 | goto err; |
| 279 | } |
| 280 | |
| 281 | *(wsh->buffer + wsh->datalen) = '\0'; |
| 282 | |
| 283 | if (strncasecmp(wsh->buffer, "GET ", 4)) { |
| 284 | goto err; |
| 285 | } |
| 286 | |
| 287 | p = wsh->buffer + 4; |
| 288 | |
| 289 | e = strchr(p, ' '); |
| 290 | if (!e) { |
| 291 | goto err; |
| 292 | } |
| 293 | |
| 294 | wsh->uri = malloc((e-p) + 1); |
| 295 | |
| 296 | if (!wsh->uri) goto err; |
| 297 | |
| 298 | strncpy(wsh->uri, p, e-p); |
| 299 | *(wsh->uri + (e-p)) = '\0'; |
| 300 | |
| 301 | cheezy_get_var(wsh->buffer, "Sec-WebSocket-Key", key, sizeof(key)); |
| 302 | cheezy_get_var(wsh->buffer, "Sec-WebSocket-Version", version, sizeof(version)); |
| 303 | cheezy_get_var(wsh->buffer, "Sec-WebSocket-Protocol", proto, sizeof(proto)); |
| 304 | |
| 305 | if (!*key) { |
| 306 | goto err; |
| 307 | } |
| 308 | |
| 309 | snprintf(input, sizeof(input), "%s%s", key, WEBSOCKET_GUID"258EAFA5-E914-47DA-95CA-C5AB0DC85B11"); |
| 310 | sha1_digest(output, input); |
| 311 | b64encode((unsigned char *)output, SHA1_HASH_SIZE20, (unsigned char *)b64, sizeof(b64)); |
| 312 | |
| 313 | if (*proto) { |
| 314 | snprintf(proto_buf, sizeof(proto_buf), "Sec-WebSocket-Protocol: %s\r\n", proto); |
| 315 | } |
| 316 | |
| 317 | snprintf(respond, sizeof(respond), |
| 318 | "HTTP/1.1 101 Switching Protocols\r\n" |
| 319 | "Upgrade: websocket\r\n" |
| 320 | "Connection: Upgrade\r\n" |
| 321 | "Sec-WebSocket-Accept: %s\r\n" |
| 322 | "%s\r\n", |
| 323 | b64, |
| 324 | proto_buf); |
| 325 | respond[511] = 0; |
| 326 | |
| 327 | if (ws_raw_write(wsh, respond, strlen(respond)) != (ssize_t)strlen(respond)) { |
| 328 | goto err; |
| 329 | } |
| 330 | |
| 331 | wsh->handshake = 1; |
| 332 | |
| 333 | return 0; |
| 334 | |
| 335 | err: |
| 336 | |
| 337 | if (!wsh->stay_open) { |
| 338 | |
| 339 | if (bytes > 0) { |
| 340 | snprintf(respond, sizeof(respond), "HTTP/1.1 400 Bad Request\r\n" |
| 341 | "Sec-WebSocket-Version: 13\r\n\r\n"); |
| 342 | respond[511] = 0; |
| 343 | |
| 344 | ws_raw_write(wsh, respond, strlen(respond)); |
| 345 | } |
| 346 | |
| 347 | ws_close(wsh, WS_NONE); |
| 348 | } |
| 349 | |
| 350 | return -1; |
| 351 | |
| 352 | } |
| 353 | |
| 354 | #define SSL_WANT_READ_WRITE(err)(err == 2 || err == 3) (err == SSL_ERROR_WANT_READ2 || err == SSL_ERROR_WANT_WRITE3) |
| 355 | int wss_error(wsh_t *wsh, int ssl_err, char const *who); |
| 356 | |
| 357 | ssize_t ws_raw_read(wsh_t *wsh, void *data, size_t bytes, int block) |
| 358 | { |
| 359 | ssize_t r; |
| 360 | int ssl_err = 0; |
| 361 | |
| 362 | wsh->x++; |
| 363 | if (wsh->x > 250) ms_sleep(1)usleep( 1 * 1000);; |
| 364 | |
| 365 | if (wsh->ssl) { |
| 366 | do { |
| 367 | //ERR_clear_error(); |
| 368 | r = SSL_read(wsh->ssl, data, bytes); |
| 369 | |
| 370 | if (r < 0) { |
| 371 | ssl_err = SSL_get_error(wsh->ssl, r); |
| 372 | |
| 373 | if (SSL_WANT_READ_WRITE(ssl_err)(ssl_err == 2 || ssl_err == 3)) { |
| 374 | if (!block) { |
| 375 | r = -2; |
| 376 | goto end; |
| 377 | } |
| 378 | wsh->x++; |
| 379 | ms_sleep(10)usleep( 10 * 1000);; |
| 380 | } else { |
| 381 | wss_error(wsh, ssl_err, "ws_raw_read: SSL_read"); |
| 382 | r = -1; |
| 383 | goto end; |
| 384 | } |
| 385 | } |
| 386 | |
| 387 | } while (r < 0 && SSL_WANT_READ_WRITE(ssl_err)(ssl_err == 2 || ssl_err == 3) && wsh->x < 1000); |
| 388 | |
| 389 | goto end; |
| 390 | } |
| 391 | |
| 392 | do { |
| 393 | |
| 394 | r = recv(wsh->sock, data, bytes, 0); |
| 395 | |
| 396 | if (r == -1) { |
| 397 | if (!block && xp_is_blocking(xp_errno())) { |
| 398 | r = -2; |
| 399 | goto end; |
| 400 | } |
| 401 | |
| 402 | if (block) { |
| 403 | wsh->x++; |
| 404 | ms_sleep(10)usleep( 10 * 1000);; |
| 405 | } |
| 406 | } |
| 407 | } while (r == -1 && xp_is_blocking(xp_errno()) && wsh->x < 1000); |
| 408 | |
| 409 | end: |
| 410 | |
| 411 | if (wsh->x >= 10000 || (block && wsh->x >= 1000)) { |
| 412 | r = -1; |
| 413 | } |
| 414 | |
| 415 | if (r > 0) { |
| 416 | *((char *)data + r) = '\0'; |
| 417 | } |
| 418 | |
| 419 | if (r >= 0) { |
| 420 | wsh->x = 0; |
| 421 | } |
| 422 | |
| 423 | return r; |
| 424 | } |
| 425 | |
| 426 | /** Log WSS error(s). |
| 427 | * |
| 428 | * Log the WSS error specified by the error code @a e and all the errors in |
| 429 | * the queue. The error code @a e implies no error, and it is not logged. |
| 430 | */ |
| 431 | void wss_log_errors(unsigned level, char const *s, unsigned long e) |
| 432 | { |
| 433 | if (e == 0) |
| 434 | e = ERR_get_error(); |
| 435 | |
| 436 | if (!tport_log->log_init) |
| 437 | su_log_init(tport_log); |
| 438 | |
| 439 | if (s == NULL((void*)0)) s = "tls"; |
| 440 | |
| 441 | for (; e != 0; e = ERR_get_error()) { |
| 442 | if (level <= tport_log->log_level) { |
| 443 | const char *error = ERR_lib_error_string(e); |
| 444 | const char *func = ERR_func_error_string(e); |
| 445 | const char *reason = ERR_reason_error_string(e); |
| 446 | |
| 447 | su_llog(tport_log, level, "%s: %08lx:%s:%s:%s\n",_su_llog(tport_log, level, "ws.c", (const char *)__func__, 448 , "%s: %08lx:%s:%s:%s\n", s, e, error, func, reason) |
| 448 | s, e, error, func, reason)_su_llog(tport_log, level, "ws.c", (const char *)__func__, 448 , "%s: %08lx:%s:%s:%s\n", s, e, error, func, reason); |
| 449 | } |
| 450 | } |
| 451 | } |
| 452 | |
| 453 | int wss_error(wsh_t *wsh, int ssl_err, char const *who) |
| 454 | { |
| 455 | switch (ssl_err) { |
| 456 | case SSL_ERROR_ZERO_RETURN6: |
| 457 | return 0; |
| 458 | |
| 459 | case SSL_ERROR_SYSCALL5: |
| 460 | ERR_clear_error(); |
| 461 | if (SSL_get_shutdown(wsh->ssl) & SSL_RECEIVED_SHUTDOWN2) |
| 462 | return 0; /* EOS */ |
| 463 | if (errno(*__errno_location ()) == 0) |
| 464 | return 0; /* EOS */ |
| 465 | |
| 466 | errno(*__errno_location ()) = EIO5; |
| 467 | return -1; |
| 468 | |
| 469 | default: |
| 470 | wss_log_errors(1, who, ssl_err); |
| 471 | errno(*__errno_location ()) = EIO5; |
| 472 | return -1; |
| 473 | } |
| 474 | } |
| 475 | |
| 476 | /* |
| 477 | * Blocking read until bytes have been received, failure, or too many retries. |
| 478 | */ |
| 479 | static ssize_t ws_raw_read_blocking(wsh_t *wsh, char *data, size_t max_bytes, int max_retries) |
| 480 | { |
| 481 | ssize_t total_bytes_read = 0; |
| 482 | while (total_bytes_read < max_bytes && max_retries-- > 0) { |
| 483 | ssize_t bytes_read = ws_raw_read(wsh, data + total_bytes_read, max_bytes - total_bytes_read, WS_BLOCK1); |
| 484 | if (bytes_read < 0) { |
| 485 | break; |
| 486 | } |
| 487 | total_bytes_read += bytes_read; |
| 488 | } |
| 489 | return total_bytes_read; |
| 490 | } |
| 491 | |
| 492 | ssize_t ws_raw_write(wsh_t *wsh, void *data, size_t bytes) |
| 493 | { |
| 494 | ssize_t r; |
| 495 | int sanity = WS_WRITE_SANITY200; |
| 496 | int ssl_err = 0; |
| 497 | size_t wrote = 0; |
| 498 | |
| 499 | if (wsh == NULL((void*)0) || data == NULL((void*)0)) { |
| 500 | errno(*__errno_location ()) = EINVAL22; |
| 501 | return -1; |
| 502 | } |
| 503 | |
| 504 | if (wsh->ssl) { |
| 505 | do { |
| 506 | void *buf = (void *)((unsigned char *)data + wrote); |
| 507 | int size = bytes - wrote; |
| 508 | |
| 509 | //ERR_clear_error(); |
| 510 | r = SSL_write(wsh->ssl, buf, size); |
| 511 | |
| 512 | if (r == 0) { |
| 513 | ssl_err = -42; |
| 514 | break; |
| 515 | } |
| 516 | |
| 517 | if (r > 0) { |
| 518 | wrote += r; |
| 519 | } |
| 520 | |
| 521 | if (sanity < WS_WRITE_SANITY200) { |
| 522 | int ms = 1; |
| 523 | |
| 524 | if (wsh->block) { |
| 525 | if (sanity < WS_WRITE_SANITY200 / 2) { |
| 526 | ms = 25; |
| 527 | } else if (sanity < WS_WRITE_SANITY200 * 3 / 4) { |
| 528 | ms = 50; |
| 529 | } |
| 530 | } |
| 531 | ms_sleep(ms)usleep( ms * 1000);; |
| 532 | } |
| 533 | |
| 534 | if (r < 0) { |
| 535 | ssl_err = SSL_get_error(wsh->ssl, r); |
| 536 | |
| 537 | if (!SSL_WANT_READ_WRITE(ssl_err)(ssl_err == 2 || ssl_err == 3)) { |
| 538 | ssl_err = wss_error(wsh, ssl_err, "ws_raw_write: SSL_write"); |
| 539 | break; |
| 540 | } |
| 541 | ssl_err = 0; |
| 542 | } |
| 543 | |
| 544 | } while (--sanity > 0 && wrote < bytes); |
| 545 | |
| 546 | if (!sanity) ssl_err = -56; |
| 547 | |
| 548 | if (ssl_err) { |
| 549 | r = ssl_err; |
| 550 | } |
| 551 | |
| 552 | return r < 0 ? r : wrote; |
| 553 | } |
| 554 | |
| 555 | do { |
| 556 | r = send(wsh->sock, (void *)((unsigned char *)data + wrote), bytes - wrote, 0); |
| 557 | |
| 558 | if (r > 0) { |
| 559 | wrote += r; |
| 560 | } |
| 561 | |
| 562 | if (sanity < WS_WRITE_SANITY200) { |
| 563 | int ms = 1; |
| 564 | |
| 565 | if (wsh->block) { |
| 566 | if (sanity < WS_WRITE_SANITY200 / 2) { |
| 567 | ms = 25; |
| 568 | } else if (sanity < WS_WRITE_SANITY200 * 3 / 4) { |
| 569 | ms = 50; |
| 570 | } |
| 571 | } |
| 572 | ms_sleep(ms)usleep( ms * 1000);; |
| 573 | } |
| 574 | |
| 575 | if (r == -1) { |
| 576 | if (!xp_is_blocking(xp_errno())) { |
| 577 | break; |
| 578 | } |
| 579 | } |
| 580 | |
| 581 | } while (--sanity > 0 && wrote < bytes); |
| 582 | |
| 583 | //if (r<0) { |
| 584 | //printf("wRITE FAIL: %s\n", strerror(errno)); |
| 585 | //} |
| 586 | |
| 587 | return r < 0 ? r : wrote; |
| 588 | } |
| 589 | |
| 590 | #ifdef _MSC_VER |
| 591 | static int setup_socket(ws_socket_t sock) |
| 592 | { |
| 593 | unsigned long v = 1; |
| 594 | |
| 595 | if (ioctlsocket(sock, FIONBIO0x5421, &v) == SOCKET_ERRORSOCKET_ERROR) { |
| 596 | return -1; |
| 597 | } |
| 598 | |
| 599 | return 0; |
| 600 | |
| 601 | } |
| 602 | |
| 603 | static int restore_socket(ws_socket_t sock) |
| 604 | { |
| 605 | unsigned long v = 0; |
| 606 | |
| 607 | if (ioctlsocket(sock, FIONBIO0x5421, &v) == SOCKET_ERRORSOCKET_ERROR) { |
| 608 | return -1; |
| 609 | } |
| 610 | |
| 611 | return 0; |
| 612 | |
| 613 | } |
| 614 | |
| 615 | #else |
| 616 | |
| 617 | static int setup_socket(ws_socket_t sock) |
| 618 | { |
| 619 | int flags = fcntl(sock, F_GETFL3, 0); |
| 620 | return fcntl(sock, F_SETFL4, flags | O_NONBLOCK04000); |
| 621 | } |
| 622 | |
| 623 | static int restore_socket(ws_socket_t sock) |
| 624 | { |
| 625 | int flags = fcntl(sock, F_GETFL3, 0); |
| 626 | |
| 627 | flags &= ~O_NONBLOCK04000; |
| 628 | |
| 629 | return fcntl(sock, F_SETFL4, flags); |
| 630 | |
| 631 | } |
| 632 | |
| 633 | #endif |
| 634 | |
| 635 | |
| 636 | int establish_logical_layer(wsh_t *wsh) |
| 637 | { |
| 638 | |
| 639 | if (!wsh->sanity) { |
| 640 | return -1; |
| 641 | } |
| 642 | |
| 643 | if (wsh->logical_established) { |
| 644 | return 0; |
| 645 | } |
| 646 | |
| 647 | if (wsh->secure && !wsh->secure_established) { |
| 648 | int code; |
| 649 | |
| 650 | if (!wsh->ssl) { |
| 651 | wsh->ssl = SSL_new(wsh->ssl_ctx); |
| 652 | assert(wsh->ssl)((void) sizeof ((wsh->ssl) ? 1 : 0), __extension__ ({ if ( wsh->ssl) ; else __assert_fail ("wsh->ssl", "ws.c", 652 , __extension__ __PRETTY_FUNCTION__); })); |
| 653 | |
| 654 | SSL_set_fd(wsh->ssl, wsh->sock); |
| 655 | } |
| 656 | |
| 657 | do { |
| 658 | code = SSL_accept(wsh->ssl); |
| 659 | |
| 660 | if (code == 1) { |
| 661 | wsh->secure_established = 1; |
| 662 | break; |
| 663 | } |
| 664 | |
| 665 | if (code == 0) { |
| 666 | return -1; |
| 667 | } |
| 668 | |
| 669 | if (code < 0) { |
| 670 | int ssl_err = SSL_get_error(wsh->ssl, code); |
| 671 | if (!SSL_WANT_READ_WRITE(ssl_err)(ssl_err == 2 || ssl_err == 3)) { |
| 672 | wss_error(wsh, ssl_err, "establish_logical_layer: SSL_accept"); |
| 673 | return -1; |
| 674 | } |
| 675 | } |
| 676 | |
| 677 | if (wsh->block) { |
| 678 | ms_sleep(10)usleep( 10 * 1000);; |
| 679 | } else { |
| 680 | ms_sleep(1)usleep( 1 * 1000);; |
| 681 | } |
| 682 | |
| 683 | wsh->sanity--; |
| 684 | |
| 685 | if (!wsh->block) { |
| 686 | return -2; |
| 687 | } |
| 688 | |
| 689 | } while (wsh->sanity > 0); |
| 690 | |
| 691 | if (!wsh->sanity) { |
| 692 | return -1; |
| 693 | } |
| 694 | |
| 695 | } |
| 696 | |
| 697 | while (!wsh->down && !wsh->handshake) { |
| 698 | int r = ws_handshake(wsh); |
| 699 | |
| 700 | if (r < 0) { |
| 701 | wsh->down = 1; |
| 702 | return -1; |
| 703 | } |
| 704 | |
| 705 | if (!wsh->handshake && !wsh->block) { |
| 706 | return -2; |
| 707 | } |
| 708 | |
| 709 | } |
| 710 | |
| 711 | wsh->logical_established = 1; |
| 712 | |
| 713 | return 0; |
| 714 | } |
| 715 | |
| 716 | void ws_set_global_payload_size_max(ssize_t bytes) |
| 717 | { |
| 718 | ws_global_payload_size_max = bytes; |
| 719 | } |
| 720 | |
| 721 | int ws_init(wsh_t *wsh, ws_socket_t sock, SSL_CTX *ssl_ctx, int close_sock, int block, int stay_open) |
| 722 | { |
| 723 | memset(wsh, 0, sizeof(*wsh)); |
| 724 | |
| 725 | wsh->payload_size_max = ws_global_payload_size_max; |
| 726 | wsh->sock = sock; |
| 727 | wsh->block = block; |
| 728 | wsh->sanity = WS_INIT_SANITY5000; |
| 729 | wsh->ssl_ctx = ssl_ctx; |
| 730 | wsh->stay_open = stay_open; |
| 731 | |
| 732 | if (!ssl_ctx) { |
| 733 | ssl_ctx = ws_globals.ssl_ctx; |
| 734 | } |
| 735 | |
| 736 | if (close_sock) { |
| 737 | wsh->close_sock = 1; |
| 738 | } |
| 739 | |
| 740 | wsh->buflen = 1024 * 64; |
| 741 | wsh->bbuflen = wsh->buflen; |
| 742 | |
| 743 | wsh->buffer = malloc(wsh->buflen); |
| 744 | wsh->bbuffer = malloc(wsh->bbuflen); |
| 745 | //printf("init %p %ld\n", (void *) wsh->bbuffer, wsh->bbuflen); |
| 746 | //memset(wsh->buffer, 0, wsh->buflen); |
| 747 | //memset(wsh->bbuffer, 0, wsh->bbuflen); |
| 748 | |
| 749 | wsh->secure = ssl_ctx ? 1 : 0; |
| 750 | |
| 751 | setup_socket(sock); |
| 752 | |
| 753 | if (establish_logical_layer(wsh) == -1) { |
| 754 | return -1; |
| 755 | } |
| 756 | |
| 757 | if (wsh->down) { |
| 758 | return -1; |
| 759 | } |
| 760 | |
| 761 | return 0; |
| 762 | } |
| 763 | |
| 764 | void ws_destroy(wsh_t *wsh) |
| 765 | { |
| 766 | |
| 767 | if (!wsh) { |
| 768 | return; |
| 769 | } |
| 770 | |
| 771 | if (!wsh->down) { |
| 772 | ws_close(wsh, WS_NONE); |
| 773 | } |
| 774 | |
| 775 | if (wsh->down > 1) { |
| 776 | return; |
| 777 | } |
| 778 | |
| 779 | wsh->down = 2; |
| 780 | |
| 781 | if (wsh->write_buffer) { |
| 782 | free(wsh->write_buffer); |
| 783 | wsh->write_buffer = NULL((void*)0); |
| 784 | wsh->write_buffer_len = 0; |
| 785 | } |
| 786 | |
| 787 | if (wsh->buffer) free(wsh->buffer); |
| 788 | if (wsh->bbuffer) free(wsh->bbuffer); |
| 789 | |
| 790 | wsh->buffer = wsh->bbuffer = NULL((void*)0); |
| 791 | |
| 792 | } |
| 793 | |
| 794 | ssize_t ws_close(wsh_t *wsh, int16_t reason) |
| 795 | { |
| 796 | |
| 797 | if (wsh->down) { |
| 798 | return -1; |
| 799 | } |
| 800 | |
| 801 | wsh->down = 1; |
| 802 | |
| 803 | if (wsh->uri) { |
| 804 | free(wsh->uri); |
| 805 | wsh->uri = NULL((void*)0); |
| 806 | } |
| 807 | |
| 808 | if (reason && wsh->sock != ws_sock_invalid(ws_socket_t)-1) { |
| 809 | uint16_t *u16; |
| 810 | uint8_t fr[4] = {WSOC_CLOSE | 0x80, 2, 0}; |
| 811 | |
| 812 | u16 = (uint16_t *) &fr[2]; |
| 813 | *u16 = htons((int16_t)reason); |
| 814 | ws_raw_write(wsh, fr, 4); |
| 815 | } |
| 816 | |
| 817 | if (wsh->ssl) { |
| 818 | int code = 0, rcode = 0; |
| 819 | int ssl_error = 0; |
| 820 | const char* buf = "0"; |
| 821 | |
| 822 | /* SSL layer was never established */ |
| 823 | if (!wsh->secure_established) { |
| 824 | goto ssl_finish_it; |
| 825 | } |
| 826 | |
| 827 | /* connection has been already closed */ |
| 828 | if (SSL_get_shutdown(wsh->ssl) & SSL_SENT_SHUTDOWN1) { |
| 829 | goto ssl_finish_it; |
| 830 | } |
| 831 | |
| 832 | restore_socket(wsh->sock); |
| 833 | |
| 834 | /* peer closes the connection */ |
| 835 | if (SSL_get_shutdown(wsh->ssl) & SSL_RECEIVED_SHUTDOWN2) { |
| 836 | code = SSL_write(wsh->ssl, buf, 1); |
| 837 | ssl_error = SSL_get_error(wsh->ssl, code); |
| 838 | if (ssl_error == SSL_ERROR_SYSCALL5 || ssl_error == SSL_ERROR_SSL1) { |
| 839 | goto ssl_finish_it; |
| 840 | } |
| 841 | |
| 842 | code = SSL_shutdown(wsh->ssl); |
Value stored to 'code' is never read | |
| 843 | goto ssl_finish_it; |
| 844 | } |
| 845 | |
| 846 | /* us closes the connection. We do bidirection shutdown handshake */ |
| 847 | code = SSL_write(wsh->ssl, buf, 1); |
| 848 | ssl_error = SSL_get_error(wsh->ssl, code); |
| 849 | if (ssl_error == SSL_ERROR_SYSCALL5 || ssl_error == SSL_ERROR_SSL1) { |
| 850 | goto ssl_finish_it; |
| 851 | } |
| 852 | |
| 853 | do { |
| 854 | code = SSL_shutdown(wsh->ssl); |
| 855 | if (code == 0) { |
| 856 | /* need to make sure there are no more data to read */ |
| 857 | do { |
| 858 | if ((rcode = SSL_read(wsh->ssl, wsh->buffer, 9)) <= 0) { |
| 859 | ssl_error = SSL_get_error(wsh->ssl, rcode); |
| 860 | if (ssl_error == SSL_ERROR_ZERO_RETURN6 || ssl_error == SSL_ERROR_SYSCALL5 || ssl_error == SSL_ERROR_SSL1) { |
| 861 | break; |
| 862 | } |
| 863 | } |
| 864 | } while (rcode >= 0); |
| 865 | } |
| 866 | } while (code == 0); |
| 867 | |
| 868 | ssl_finish_it: |
| 869 | SSL_free(wsh->ssl); |
| 870 | wsh->ssl = NULL((void*)0); |
| 871 | } |
| 872 | |
| 873 | if (wsh->close_sock && wsh->sock != ws_sock_invalid(ws_socket_t)-1) { |
| 874 | #ifndef WIN32 |
| 875 | close(wsh->sock); |
| 876 | #else |
| 877 | closesocket(wsh->sock); |
| 878 | #endif |
| 879 | } |
| 880 | |
| 881 | wsh->sock = ws_sock_invalid(ws_socket_t)-1; |
| 882 | |
| 883 | return reason * -1; |
| 884 | |
| 885 | } |
| 886 | |
| 887 | |
| 888 | uint64_t hton64(uint64_t val) |
| 889 | { |
| 890 | if (__BYTE_ORDER1234 == __BIG_ENDIAN4321) return (val); |
| 891 | else return __bswap_64(val); |
| 892 | } |
| 893 | |
| 894 | uint64_t ntoh64(uint64_t val) |
| 895 | { |
| 896 | if (__BYTE_ORDER1234 == __BIG_ENDIAN4321) return (val); |
| 897 | else return __bswap_64(val); |
| 898 | } |
| 899 | |
| 900 | |
| 901 | ssize_t ws_read_frame(wsh_t *wsh, ws_opcode_t *oc, uint8_t **data) |
| 902 | { |
| 903 | |
| 904 | ssize_t need = 2; |
| 905 | char *maskp; |
| 906 | int ll = 0; |
| 907 | int frag = 0; |
| 908 | int blen; |
| 909 | |
| 910 | wsh->body = wsh->bbuffer; |
| 911 | wsh->packetlen = 0; |
| 912 | |
| 913 | again: |
| 914 | need = 2; |
| 915 | maskp = NULL((void*)0); |
| 916 | *data = NULL((void*)0); |
| 917 | |
| 918 | ll = establish_logical_layer(wsh); |
| 919 | |
| 920 | if (ll < 0) { |
| 921 | return ll; |
| 922 | } |
| 923 | |
| 924 | if (wsh->down) { |
| 925 | return -1; |
| 926 | } |
| 927 | |
| 928 | if (!wsh->handshake) { |
| 929 | return ws_close(wsh, WS_NONE); |
| 930 | } |
| 931 | |
| 932 | if ((wsh->datalen = ws_raw_read(wsh, wsh->buffer, 9, wsh->block)) < 0) { |
| 933 | if (wsh->datalen == -2) { |
| 934 | return -2; |
| 935 | } |
| 936 | return ws_close(wsh, WS_NONE); |
| 937 | } |
| 938 | |
| 939 | if (wsh->datalen < need) { |
| 940 | ssize_t bytes = ws_raw_read(wsh, wsh->buffer + wsh->datalen, 9 - wsh->datalen, WS_BLOCK1); |
| 941 | |
| 942 | if (bytes < 0 || (wsh->datalen += bytes) < need) { |
| 943 | /* too small - protocol err */ |
| 944 | return ws_close(wsh, WS_NONE); |
| 945 | } |
| 946 | } |
| 947 | |
| 948 | *oc = *wsh->buffer & 0xf; |
| 949 | |
| 950 | switch(*oc) { |
| 951 | case WSOC_CLOSE: |
| 952 | { |
| 953 | wsh->plen = wsh->buffer[1] & 0x7f; |
| 954 | *data = (uint8_t *) &wsh->buffer[2]; |
| 955 | return ws_close(wsh, 1000); |
| 956 | } |
| 957 | break; |
| 958 | case WSOC_CONTINUATION: |
| 959 | case WSOC_TEXT: |
| 960 | case WSOC_BINARY: |
| 961 | case WSOC_PING: |
| 962 | case WSOC_PONG: |
| 963 | { |
| 964 | int fin = (wsh->buffer[0] >> 7) & 1; |
| 965 | int mask = (wsh->buffer[1] >> 7) & 1; |
| 966 | |
| 967 | |
| 968 | if (!fin && *oc != WSOC_CONTINUATION) { |
| 969 | frag = 1; |
| 970 | } else if (fin && *oc == WSOC_CONTINUATION) { |
| 971 | frag = 0; |
| 972 | } |
| 973 | |
| 974 | if (mask) { |
| 975 | need += 4; |
| 976 | |
| 977 | if (need > wsh->datalen) { |
| 978 | ssize_t bytes = ws_raw_read_blocking(wsh, wsh->buffer + wsh->datalen, need - wsh->datalen, 10); |
| 979 | if (bytes < 0 || (wsh->datalen += bytes) < need) { |
| 980 | /* too small - protocol err */ |
| 981 | *oc = WSOC_CLOSE; |
| 982 | return ws_close(wsh, WS_NONE); |
| 983 | } |
| 984 | } |
| 985 | } |
| 986 | |
| 987 | wsh->plen = wsh->buffer[1] & 0x7f; |
| 988 | wsh->payload = &wsh->buffer[2]; |
| 989 | |
| 990 | if (wsh->plen == 127) { |
| 991 | uint64_t *u64; |
| 992 | |
| 993 | need += 8; |
| 994 | |
| 995 | if (need > wsh->datalen) { |
| 996 | ssize_t bytes = ws_raw_read_blocking(wsh, wsh->buffer + wsh->datalen, need - wsh->datalen, 10); |
| 997 | if (bytes < 0 || (wsh->datalen += bytes) < need) { |
| 998 | /* too small - protocol err */ |
| 999 | *oc = WSOC_CLOSE; |
| 1000 | return ws_close(wsh, WS_NONE); |
| 1001 | } |
| 1002 | } |
| 1003 | |
| 1004 | u64 = (uint64_t *) wsh->payload; |
| 1005 | wsh->payload += 8; |
| 1006 | wsh->plen = ntoh64(*u64); |
| 1007 | } else if (wsh->plen == 126) { |
| 1008 | uint16_t *u16; |
| 1009 | |
| 1010 | need += 2; |
| 1011 | |
| 1012 | if (need > wsh->datalen) { |
| 1013 | ssize_t bytes = ws_raw_read_blocking(wsh, wsh->buffer + wsh->datalen, need - wsh->datalen, 10); |
| 1014 | if (bytes < 0 || (wsh->datalen += bytes) < need) { |
| 1015 | /* too small - protocol err */ |
| 1016 | *oc = WSOC_CLOSE; |
| 1017 | return ws_close(wsh, WS_NONE); |
| 1018 | } |
| 1019 | } |
| 1020 | |
| 1021 | u16 = (uint16_t *) wsh->payload; |
| 1022 | wsh->payload += 2; |
| 1023 | wsh->plen = ntohs(*u16); |
| 1024 | } |
| 1025 | |
| 1026 | if (mask) { |
| 1027 | maskp = (char *)wsh->payload; |
| 1028 | wsh->payload += 4; |
| 1029 | } |
| 1030 | |
| 1031 | need = (wsh->plen - (wsh->datalen - need)); |
| 1032 | |
| 1033 | if (need < 0) { |
| 1034 | /* invalid read - protocol err .. */ |
| 1035 | *oc = WSOC_CLOSE; |
| 1036 | return ws_close(wsh, WS_NONE); |
| 1037 | } |
| 1038 | |
| 1039 | blen = wsh->body - wsh->bbuffer; |
| 1040 | |
| 1041 | if (need + blen > (ssize_t)wsh->bbuflen) { |
| 1042 | void *tmp; |
| 1043 | |
| 1044 | wsh->bbuflen = need + blen + wsh->rplen; |
| 1045 | |
| 1046 | if (wsh->payload_size_max && wsh->bbuflen > wsh->payload_size_max) { |
| 1047 | /* size limit */ |
| 1048 | *oc = WSOC_CLOSE; |
| 1049 | return ws_close(wsh, WS_NONE); |
| 1050 | } |
| 1051 | |
| 1052 | if ((tmp = realloc(wsh->bbuffer, wsh->bbuflen))) { |
| 1053 | wsh->bbuffer = tmp; |
| 1054 | } else { |
| 1055 | abort(); |
| 1056 | } |
| 1057 | |
| 1058 | wsh->body = wsh->bbuffer + blen; |
| 1059 | } |
| 1060 | |
| 1061 | wsh->rplen = wsh->plen - need; |
| 1062 | |
| 1063 | if (wsh->rplen) { |
| 1064 | memcpy(wsh->body, wsh->payload, wsh->rplen); |
| 1065 | } |
| 1066 | |
| 1067 | while(need) { |
| 1068 | ssize_t r = ws_raw_read(wsh, wsh->body + wsh->rplen, need, WS_BLOCK1); |
| 1069 | |
| 1070 | if (r < 1) { |
| 1071 | /* invalid read - protocol err .. */ |
| 1072 | *oc = WSOC_CLOSE; |
| 1073 | return ws_close(wsh, WS_NONE); |
| 1074 | } |
| 1075 | |
| 1076 | wsh->datalen += r; |
| 1077 | wsh->rplen += r; |
| 1078 | need -= r; |
| 1079 | } |
| 1080 | |
| 1081 | if (mask && maskp) { |
| 1082 | ssize_t i; |
| 1083 | |
| 1084 | for (i = 0; i < wsh->datalen; i++) { |
| 1085 | wsh->body[i] ^= maskp[i % 4]; |
| 1086 | } |
| 1087 | } |
| 1088 | |
| 1089 | |
| 1090 | if (*oc == WSOC_PING) { |
| 1091 | ws_write_frame(wsh, WSOC_PONG, wsh->body, wsh->rplen); |
| 1092 | goto again; |
| 1093 | } |
| 1094 | |
| 1095 | *(wsh->body+wsh->rplen) = '\0'; |
| 1096 | wsh->packetlen += wsh->rplen; |
| 1097 | wsh->body += wsh->rplen; |
| 1098 | |
| 1099 | if (frag) { |
| 1100 | goto again; |
| 1101 | } |
| 1102 | |
| 1103 | *data = (uint8_t *)wsh->bbuffer; |
| 1104 | |
| 1105 | //printf("READ[%ld][%d]-----------------------------:\n[%s]\n-------------------------------\n", wsh->packetlen, *oc, (char *)*data); |
| 1106 | |
| 1107 | |
| 1108 | return wsh->packetlen; |
| 1109 | } |
| 1110 | break; |
| 1111 | default: |
| 1112 | { |
| 1113 | /* invalid op code - protocol err .. */ |
| 1114 | *oc = WSOC_CLOSE; |
| 1115 | return ws_close(wsh, WS_PROTO_ERR); |
| 1116 | } |
| 1117 | break; |
| 1118 | } |
| 1119 | } |
| 1120 | |
| 1121 | ssize_t ws_write_frame(wsh_t *wsh, ws_opcode_t oc, void *data, size_t bytes) |
| 1122 | { |
| 1123 | uint8_t hdr[14] = { 0 }; |
| 1124 | size_t hlen = 2; |
| 1125 | uint8_t *bp; |
| 1126 | ssize_t raw_ret = 0; |
| 1127 | |
| 1128 | if (wsh->down) { |
| 1129 | errno(*__errno_location ()) = EIO5; |
| 1130 | return -1; |
| 1131 | } |
| 1132 | |
| 1133 | //printf("WRITE[%ld]-----------------------------:\n[%s]\n-----------------------------------\n", bytes, (char *) data); |
| 1134 | |
| 1135 | hdr[0] = (uint8_t)(oc | 0x80); |
| 1136 | |
| 1137 | if (bytes < 126) { |
| 1138 | hdr[1] = (uint8_t)bytes; |
| 1139 | } else if (bytes < 0x10000) { |
| 1140 | uint16_t *u16; |
| 1141 | |
| 1142 | hdr[1] = 126; |
| 1143 | hlen += 2; |
| 1144 | |
| 1145 | u16 = (uint16_t *) &hdr[2]; |
| 1146 | *u16 = htons((uint16_t) bytes); |
| 1147 | |
| 1148 | } else { |
| 1149 | uint64_t *u64; |
| 1150 | |
| 1151 | hdr[1] = 127; |
| 1152 | hlen += 8; |
| 1153 | |
| 1154 | u64 = (uint64_t *) &hdr[2]; |
| 1155 | *u64 = hton64(bytes); |
| 1156 | } |
| 1157 | |
| 1158 | if (wsh->write_buffer_len < (hlen + bytes + 1)) { |
| 1159 | void *tmp; |
| 1160 | |
| 1161 | wsh->write_buffer_len = hlen + bytes + 1; |
| 1162 | if ((tmp = realloc(wsh->write_buffer, wsh->write_buffer_len))) { |
| 1163 | wsh->write_buffer = tmp; |
| 1164 | } else { |
| 1165 | abort(); |
| 1166 | } |
| 1167 | } |
| 1168 | |
| 1169 | bp = (uint8_t *) wsh->write_buffer; |
| 1170 | memcpy(bp, (void *) &hdr[0], hlen); |
| 1171 | memcpy(bp + hlen, data, bytes); |
| 1172 | |
| 1173 | raw_ret = ws_raw_write(wsh, bp, (hlen + bytes)); |
| 1174 | |
| 1175 | if (raw_ret <= 0 || raw_ret != (ssize_t) (hlen + bytes)) { |
| 1176 | return raw_ret; |
| 1177 | } |
| 1178 | |
| 1179 | return bytes; |
| 1180 | } |
| 1181 | |
| 1182 | #ifdef _MSC_VER |
| 1183 | |
| 1184 | int xp_errno(void) |
| 1185 | { |
| 1186 | return WSAGetLastError(); |
| 1187 | } |
| 1188 | |
| 1189 | int xp_is_blocking(int errcode) |
| 1190 | { |
| 1191 | return errcode == WSAEWOULDBLOCK || errcode == WSAEINPROGRESS; |
| 1192 | } |
| 1193 | |
| 1194 | #else |
| 1195 | |
| 1196 | int xp_errno(void) |
| 1197 | { |
| 1198 | return errno(*__errno_location ()); |
| 1199 | } |
| 1200 | |
| 1201 | int xp_is_blocking(int errcode) |
| 1202 | { |
| 1203 | return errcode == EAGAIN11 || errcode == EWOULDBLOCK11 || errcode == EINPROGRESS115 || errcode == EINTR4 || errcode == ETIMEDOUT110; |
| 1204 | } |
| 1205 | |
| 1206 | #endif |