1 2 /* 3 * Copyright (C) Igor Sysoev 4 * Copyright (C) NGINX, Inc. 5 */ 6 7 #include <nxt_router.h> 8 #include <nxt_http.h> 9 #include <nxt_sockaddr.h> 10 #include <nxt_http_route_addr.h> 11 #include <nxt_regex.h> 12 13 14 typedef enum { 15 NXT_HTTP_ROUTE_TABLE = 0, 16 NXT_HTTP_ROUTE_STRING, 17 NXT_HTTP_ROUTE_STRING_PTR, 18 NXT_HTTP_ROUTE_HEADER, 19 NXT_HTTP_ROUTE_ARGUMENT, 20 NXT_HTTP_ROUTE_COOKIE, 21 NXT_HTTP_ROUTE_SCHEME, 22 NXT_HTTP_ROUTE_SOURCE, 23 NXT_HTTP_ROUTE_DESTINATION, 24 } nxt_http_route_object_t; 25 26 27 typedef enum { 28 NXT_HTTP_ROUTE_PATTERN_EXACT = 0, 29 NXT_HTTP_ROUTE_PATTERN_BEGIN, 30 NXT_HTTP_ROUTE_PATTERN_END, 31 NXT_HTTP_ROUTE_PATTERN_SUBSTRING, 32 } nxt_http_route_pattern_type_t; 33 34 35 typedef enum { 36 NXT_HTTP_ROUTE_PATTERN_NOCASE = 0, 37 NXT_HTTP_ROUTE_PATTERN_LOWCASE, 38 NXT_HTTP_ROUTE_PATTERN_UPCASE, 39 } nxt_http_route_pattern_case_t; 40 41 42 typedef enum { 43 NXT_HTTP_ROUTE_ENCODING_NONE = 0, 44 NXT_HTTP_ROUTE_ENCODING_URI, 45 NXT_HTTP_ROUTE_ENCODING_URI_PLUS 46 } nxt_http_route_encoding_t; 47 48 49 typedef struct { 50 nxt_conf_value_t *pass; 51 nxt_conf_value_t *ret; 52 nxt_str_t location; 53 nxt_conf_value_t *share; 54 nxt_conf_value_t *proxy; 55 nxt_conf_value_t *fallback; 56 } nxt_http_route_action_conf_t; 57 58 59 typedef struct { 60 nxt_conf_value_t *host; 61 nxt_conf_value_t *uri; 62 nxt_conf_value_t *method; 63 nxt_conf_value_t *headers; 64 nxt_conf_value_t *arguments; 65 nxt_conf_value_t *cookies; 66 nxt_conf_value_t *scheme; 67 nxt_conf_value_t *source; 68 nxt_conf_value_t *destination; 69 } nxt_http_route_match_conf_t; 70 71 72 typedef struct { 73 u_char *start; 74 uint32_t length; 75 nxt_http_route_pattern_type_t type:8; 76 } nxt_http_route_pattern_slice_t; 77 78 79 typedef struct { 80 union { 81 nxt_array_t *pattern_slices; 82 #if (NXT_HAVE_REGEX) 83 nxt_regex_t *regex; 84 #endif 85 } u; 86 uint32_t min_length; 87 88 uint8_t case_sensitive; /* 1 bit */ 89 uint8_t negative; /* 1 bit */ 90 uint8_t any; /* 1 bit */ 91 #if (NXT_HAVE_REGEX) 92 uint8_t regex; /* 1 bit */ 93 #endif 94 } nxt_http_route_pattern_t; 95 96 97 typedef struct { 98 uint16_t hash; 99 uint16_t name_length; 100 uint32_t value_length; 101 u_char *name; 102 u_char *value; 103 } nxt_http_name_value_t; 104 105 106 typedef struct { 107 uint16_t hash; 108 uint16_t name_length; 109 uint32_t value_length; 110 u_char *name; 111 u_char *value; 112 } nxt_http_cookie_t; 113 114 115 typedef struct { 116 /* The object must be the first field. */ 117 nxt_http_route_object_t object:8; 118 uint32_t items; 119 120 union { 121 uintptr_t offset; 122 123 struct { 124 u_char *start; 125 uint16_t hash; 126 uint16_t length; 127 } name; 128 } u; 129 130 nxt_http_route_pattern_t pattern[0]; 131 } nxt_http_route_rule_t; 132 133 134 typedef struct { 135 uint32_t items; 136 nxt_http_route_rule_t *rule[0]; 137 } nxt_http_route_ruleset_t; 138 139 140 typedef struct { 141 /* The object must be the first field. */ 142 nxt_http_route_object_t object:8; 143 uint32_t items; 144 nxt_http_route_ruleset_t *ruleset[0]; 145 } nxt_http_route_table_t; 146 147 148 typedef struct { 149 /* The object must be the first field. */ 150 nxt_http_route_object_t object:8; 151 uint32_t items; 152 nxt_http_route_addr_pattern_t addr_pattern[0]; 153 } nxt_http_route_addr_rule_t; 154 155 156 typedef union { 157 nxt_http_route_rule_t *rule; 158 nxt_http_route_table_t *table; 159 nxt_http_route_addr_rule_t *addr_rule; 160 } nxt_http_route_test_t; 161 162 163 typedef struct { 164 uint32_t items; 165 nxt_http_action_t action; 166 nxt_http_route_test_t test[0]; 167 } nxt_http_route_match_t; 168 169 170 struct nxt_http_route_s { 171 nxt_str_t name; 172 uint32_t items; 173 nxt_http_route_match_t *match[0]; 174 }; 175 176 177 struct nxt_http_routes_s { 178 uint32_t items; 179 nxt_http_route_t *route[0]; 180 }; 181 182 183 #define NXT_COOKIE_HASH \ 184 (nxt_http_field_hash_end( \ 185 nxt_http_field_hash_char( \ 186 nxt_http_field_hash_char( \ 187 nxt_http_field_hash_char( \ 188 nxt_http_field_hash_char( \ 189 nxt_http_field_hash_char( \ 190 nxt_http_field_hash_char(NXT_HTTP_FIELD_HASH_INIT, \ 191 'c'), 'o'), 'o'), 'k'), 'i'), 'e')) & 0xFFFF) 192 193 194 static nxt_http_route_t *nxt_http_route_create(nxt_task_t *task, 195 nxt_router_temp_conf_t *tmcf, nxt_conf_value_t *cv); 196 static nxt_http_route_match_t *nxt_http_route_match_create(nxt_task_t *task, 197 nxt_router_temp_conf_t *tmcf, nxt_conf_value_t *cv); 198 static nxt_int_t nxt_http_route_action_create(nxt_router_temp_conf_t *tmcf, 199 nxt_conf_value_t *cv, nxt_http_action_t *action); 200 static nxt_http_route_table_t *nxt_http_route_table_create(nxt_task_t *task, 201 nxt_mp_t *mp, nxt_conf_value_t *table_cv, nxt_http_route_object_t object, 202 nxt_bool_t case_sensitive, nxt_http_route_encoding_t encoding); 203 static nxt_http_route_ruleset_t *nxt_http_route_ruleset_create(nxt_task_t *task, 204 nxt_mp_t *mp, nxt_conf_value_t *ruleset_cv, nxt_http_route_object_t object, 205 nxt_bool_t case_sensitive, nxt_http_route_encoding_t encoding); 206 static nxt_http_route_rule_t *nxt_http_route_rule_name_create(nxt_task_t *task, 207 nxt_mp_t *mp, nxt_conf_value_t *rule_cv, nxt_str_t *name, 208 nxt_bool_t case_sensitive, nxt_http_route_encoding_t encoding); 209 static nxt_http_route_addr_rule_t *nxt_http_route_addr_rule_create( 210 nxt_task_t *task, nxt_mp_t *mp, nxt_conf_value_t *cv); 211 static nxt_http_route_rule_t *nxt_http_route_rule_create(nxt_task_t *task, 212 nxt_mp_t *mp, nxt_conf_value_t *cv, nxt_bool_t case_sensitive, 213 nxt_http_route_pattern_case_t pattern_case, 214 nxt_http_route_encoding_t encoding); 215 static int nxt_http_pattern_compare(const void *one, const void *two); 216 static int nxt_http_addr_pattern_compare(const void *one, const void *two); 217 static nxt_int_t nxt_http_route_pattern_create(nxt_task_t *task, nxt_mp_t *mp, 218 nxt_conf_value_t *cv, nxt_http_route_pattern_t *pattern, 219 nxt_http_route_pattern_case_t pattern_case, 220 nxt_http_route_encoding_t encoding); 221 static nxt_int_t nxt_http_route_decode_str(nxt_str_t *str, 222 nxt_http_route_encoding_t encoding); 223 static nxt_int_t nxt_http_route_pattern_slice(nxt_array_t *slices, 224 nxt_str_t *test, 225 nxt_http_route_pattern_type_t type, 226 nxt_http_route_encoding_t encoding, 227 nxt_http_route_pattern_case_t pattern_case); 228 229 static nxt_int_t nxt_http_route_resolve(nxt_task_t *task, 230 nxt_router_temp_conf_t *tmcf, nxt_http_route_t *route); 231 static nxt_int_t nxt_http_action_resolve(nxt_task_t *task, 232 nxt_router_temp_conf_t *tmcf, nxt_http_action_t *action); 233 static nxt_http_action_t *nxt_http_action_pass_var(nxt_task_t *task, 234 nxt_http_request_t *r, nxt_http_action_t *action); 235 static void nxt_http_action_pass_var_ready(nxt_task_t *task, void *obj, 236 void *data); 237 static void nxt_http_action_pass_var_error(nxt_task_t *task, void *obj, 238 void *data); 239 static nxt_int_t nxt_http_pass_find(nxt_task_t *task, nxt_mp_t *mp, 240 nxt_router_conf_t *rtcf, nxt_http_action_t *action); 241 static nxt_int_t nxt_http_route_find(nxt_http_routes_t *routes, nxt_str_t *name, 242 nxt_http_action_t *action); 243 244 static nxt_http_action_t *nxt_http_route_handler(nxt_task_t *task, 245 nxt_http_request_t *r, nxt_http_action_t *start); 246 static nxt_http_action_t *nxt_http_route_match(nxt_task_t *task, 247 nxt_http_request_t *r, nxt_http_route_match_t *match); 248 static nxt_int_t nxt_http_route_table(nxt_http_request_t *r, 249 nxt_http_route_table_t *table); 250 static nxt_int_t nxt_http_route_ruleset(nxt_http_request_t *r, 251 nxt_http_route_ruleset_t *ruleset); 252 static nxt_int_t nxt_http_route_addr_rule(nxt_http_request_t *r, 253 nxt_http_route_addr_rule_t *addr_rule, nxt_sockaddr_t *sockaddr); 254 static nxt_int_t nxt_http_route_rule(nxt_http_request_t *r, 255 nxt_http_route_rule_t *rule); 256 static nxt_int_t nxt_http_route_header(nxt_http_request_t *r, 257 nxt_http_route_rule_t *rule); 258 static nxt_int_t nxt_http_route_arguments(nxt_http_request_t *r, 259 nxt_http_route_rule_t *rule); 260 static nxt_array_t *nxt_http_route_arguments_parse(nxt_http_request_t *r); 261 static nxt_http_name_value_t *nxt_http_route_argument(nxt_array_t *array, 262 u_char *name, size_t name_length, uint32_t hash, u_char *start, 263 u_char *end); 264 static nxt_int_t nxt_http_route_test_argument(nxt_http_request_t *r, 265 nxt_http_route_rule_t *rule, nxt_array_t *array); 266 static nxt_int_t nxt_http_route_scheme(nxt_http_request_t *r, 267 nxt_http_route_rule_t *rule); 268 static nxt_int_t nxt_http_route_cookies(nxt_http_request_t *r, 269 nxt_http_route_rule_t *rule); 270 static nxt_array_t *nxt_http_route_cookies_parse(nxt_http_request_t *r); 271 static nxt_int_t nxt_http_route_cookie_parse(nxt_array_t *cookies, 272 u_char *start, u_char *end); 273 static nxt_http_name_value_t *nxt_http_route_cookie(nxt_array_t *array, 274 u_char *name, size_t name_length, u_char *start, u_char *end); 275 static nxt_int_t nxt_http_route_test_cookie(nxt_http_request_t *r, 276 nxt_http_route_rule_t *rule, nxt_array_t *array); 277 static nxt_int_t nxt_http_route_test_rule(nxt_http_request_t *r, 278 nxt_http_route_rule_t *rule, u_char *start, size_t length); 279 static nxt_int_t nxt_http_route_pattern(nxt_http_request_t *r, 280 nxt_http_route_pattern_t *pattern, u_char *start, size_t length); 281 static nxt_int_t nxt_http_route_memcmp(u_char *start, u_char *test, 282 size_t length, nxt_bool_t case_sensitive); 283 284 285 nxt_http_routes_t * 286 nxt_http_routes_create(nxt_task_t *task, nxt_router_temp_conf_t *tmcf, 287 nxt_conf_value_t *routes_conf) 288 { 289 size_t size; 290 uint32_t i, n, next; 291 nxt_mp_t *mp; 292 nxt_str_t name, *string; 293 nxt_bool_t object; 294 nxt_conf_value_t *route_conf; 295 nxt_http_route_t *route; 296 nxt_http_routes_t *routes; 297 298 object = (nxt_conf_type(routes_conf) == NXT_CONF_OBJECT); 299 n = object ? nxt_conf_object_members_count(routes_conf) : 1; 300 size = sizeof(nxt_http_routes_t) + n * sizeof(nxt_http_route_t *); 301 302 mp = tmcf->router_conf->mem_pool; 303 304 routes = nxt_mp_alloc(mp, size); 305 if (nxt_slow_path(routes == NULL)) { 306 return NULL; 307 } 308 309 routes->items = n; 310 311 if (object) { 312 next = 0; 313 314 for (i = 0; i < n; i++) { 315 route_conf = nxt_conf_next_object_member(routes_conf, &name, &next); 316 317 route = nxt_http_route_create(task, tmcf, route_conf); 318 if (nxt_slow_path(route == NULL)) { 319 return NULL; 320 } 321 322 routes->route[i] = route; 323 324 string = nxt_str_dup(mp, &route->name, &name); 325 if (nxt_slow_path(string == NULL)) { 326 return NULL; 327 } 328 } 329 330 } else { 331 route = nxt_http_route_create(task, tmcf, routes_conf); 332 if (nxt_slow_path(route == NULL)) { 333 return NULL; 334 } 335 336 routes->route[0] = route; 337 338 route->name.length = 0; 339 route->name.start = NULL; 340 } 341 342 return routes; 343 } 344 345 346 static nxt_conf_map_t nxt_http_route_match_conf[] = { 347 { 348 nxt_string("scheme"), 349 NXT_CONF_MAP_PTR, 350 offsetof(nxt_http_route_match_conf_t, scheme) 351 }, 352 { 353 nxt_string("host"), 354 NXT_CONF_MAP_PTR, 355 offsetof(nxt_http_route_match_conf_t, host), 356 }, 357 358 { 359 nxt_string("uri"), 360 NXT_CONF_MAP_PTR, 361 offsetof(nxt_http_route_match_conf_t, uri), 362 }, 363 364 { 365 nxt_string("method"), 366 NXT_CONF_MAP_PTR, 367 offsetof(nxt_http_route_match_conf_t, method), 368 }, 369 370 { 371 nxt_string("headers"), 372 NXT_CONF_MAP_PTR, 373 offsetof(nxt_http_route_match_conf_t, headers), 374 }, 375 376 { 377 nxt_string("arguments"), 378 NXT_CONF_MAP_PTR, 379 offsetof(nxt_http_route_match_conf_t, arguments), 380 }, 381 382 { 383 nxt_string("cookies"), 384 NXT_CONF_MAP_PTR, 385 offsetof(nxt_http_route_match_conf_t, cookies), 386 }, 387 388 { 389 nxt_string("source"), 390 NXT_CONF_MAP_PTR, 391 offsetof(nxt_http_route_match_conf_t, source), 392 }, 393 394 { 395 nxt_string("destination"), 396 NXT_CONF_MAP_PTR, 397 offsetof(nxt_http_route_match_conf_t, destination), 398 }, 399 }; 400 401 402 static nxt_http_route_t * 403 nxt_http_route_create(nxt_task_t *task, nxt_router_temp_conf_t *tmcf, 404 nxt_conf_value_t *cv) 405 { 406 size_t size; 407 uint32_t i, n; 408 nxt_conf_value_t *value; 409 nxt_http_route_t *route; 410 nxt_http_route_match_t *match, **m; 411 412 n = nxt_conf_array_elements_count(cv); 413 size = sizeof(nxt_http_route_t) + n * sizeof(nxt_http_route_match_t *); 414 415 route = nxt_mp_alloc(tmcf->router_conf->mem_pool, size); 416 if (nxt_slow_path(route == NULL)) { 417 return NULL; 418 } 419 420 route->items = n; 421 m = &route->match[0]; 422 423 for (i = 0; i < n; i++) { 424 value = nxt_conf_get_array_element(cv, i); 425 426 match = nxt_http_route_match_create(task, tmcf, value); 427 if (match == NULL) { 428 return NULL; 429 } 430 431 *m++ = match; 432 } 433 434 return route; 435 } 436 437 438 static nxt_http_route_match_t * 439 nxt_http_route_match_create(nxt_task_t *task, nxt_router_temp_conf_t *tmcf, 440 nxt_conf_value_t *cv) 441 { 442 size_t size; 443 uint32_t n; 444 nxt_mp_t *mp; 445 nxt_int_t ret; 446 nxt_conf_value_t *match_conf, *action_conf; 447 nxt_http_route_test_t *test; 448 nxt_http_route_rule_t *rule; 449 nxt_http_route_table_t *table; 450 nxt_http_route_match_t *match; 451 nxt_http_route_addr_rule_t *addr_rule; 452 nxt_http_route_match_conf_t mtcf; 453 454 static nxt_str_t match_path = nxt_string("/match"); 455 static nxt_str_t action_path = nxt_string("/action"); 456 457 match_conf = nxt_conf_get_path(cv, &match_path); 458 459 n = (match_conf != NULL) ? nxt_conf_object_members_count(match_conf) : 0; 460 size = sizeof(nxt_http_route_match_t) + n * sizeof(nxt_http_route_rule_t *); 461 462 mp = tmcf->router_conf->mem_pool; 463 464 match = nxt_mp_alloc(mp, size); 465 if (nxt_slow_path(match == NULL)) { 466 return NULL; 467 } 468 469 match->items = n; 470 471 action_conf = nxt_conf_get_path(cv, &action_path); 472 if (nxt_slow_path(action_conf == NULL)) { 473 return NULL; 474 } 475 476 ret = nxt_http_route_action_create(tmcf, action_conf, &match->action); 477 if (nxt_slow_path(ret != NXT_OK)) { 478 return NULL; 479 } 480 481 if (n == 0) { 482 return match; 483 } 484 485 nxt_memzero(&mtcf, sizeof(mtcf)); 486 487 ret = nxt_conf_map_object(tmcf->mem_pool, 488 match_conf, nxt_http_route_match_conf, 489 nxt_nitems(nxt_http_route_match_conf), &mtcf); 490 if (ret != NXT_OK) { 491 return NULL; 492 } 493 494 test = &match->test[0]; 495 496 if (mtcf.scheme != NULL) { 497 rule = nxt_http_route_rule_create(task, mp, mtcf.scheme, 1, 498 NXT_HTTP_ROUTE_PATTERN_NOCASE, 499 NXT_HTTP_ROUTE_ENCODING_NONE); 500 if (rule == NULL) { 501 return NULL; 502 } 503 504 rule->object = NXT_HTTP_ROUTE_SCHEME; 505 test->rule = rule; 506 test++; 507 } 508 509 if (mtcf.host != NULL) { 510 rule = nxt_http_route_rule_create(task, mp, mtcf.host, 1, 511 NXT_HTTP_ROUTE_PATTERN_LOWCASE, 512 NXT_HTTP_ROUTE_ENCODING_NONE); 513 if (rule == NULL) { 514 return NULL; 515 } 516 517 rule->u.offset = offsetof(nxt_http_request_t, host); 518 rule->object = NXT_HTTP_ROUTE_STRING; 519 test->rule = rule; 520 test++; 521 } 522 523 if (mtcf.uri != NULL) { 524 rule = nxt_http_route_rule_create(task, mp, mtcf.uri, 1, 525 NXT_HTTP_ROUTE_PATTERN_NOCASE, 526 NXT_HTTP_ROUTE_ENCODING_URI); 527 if (rule == NULL) { 528 return NULL; 529 } 530 531 rule->u.offset = offsetof(nxt_http_request_t, path); 532 rule->object = NXT_HTTP_ROUTE_STRING_PTR; 533 test->rule = rule; 534 test++; 535 } 536 537 if (mtcf.method != NULL) { 538 rule = nxt_http_route_rule_create(task, mp, mtcf.method, 1, 539 NXT_HTTP_ROUTE_PATTERN_UPCASE, 540 NXT_HTTP_ROUTE_ENCODING_NONE); 541 if (rule == NULL) { 542 return NULL; 543 } 544 545 rule->u.offset = offsetof(nxt_http_request_t, method); 546 rule->object = NXT_HTTP_ROUTE_STRING_PTR; 547 test->rule = rule; 548 test++; 549 } 550 551 if (mtcf.headers != NULL) { 552 table = nxt_http_route_table_create(task, mp, mtcf.headers, 553 NXT_HTTP_ROUTE_HEADER, 0, 554 NXT_HTTP_ROUTE_ENCODING_NONE); 555 if (table == NULL) { 556 return NULL; 557 } 558 559 test->table = table; 560 test++; 561 } 562 563 if (mtcf.arguments != NULL) { 564 table = nxt_http_route_table_create(task, mp, mtcf.arguments, 565 NXT_HTTP_ROUTE_ARGUMENT, 1, 566 NXT_HTTP_ROUTE_ENCODING_URI_PLUS); 567 if (table == NULL) { 568 return NULL; 569 } 570 571 test->table = table; 572 test++; 573 } 574 575 if (mtcf.cookies != NULL) { 576 table = nxt_http_route_table_create(task, mp, mtcf.cookies, 577 NXT_HTTP_ROUTE_COOKIE, 1, 578 NXT_HTTP_ROUTE_ENCODING_NONE); 579 if (table == NULL) { 580 return NULL; 581 } 582 583 test->table = table; 584 test++; 585 } 586 587 if (mtcf.source != NULL) { 588 addr_rule = nxt_http_route_addr_rule_create(task, mp, mtcf.source); 589 if (addr_rule == NULL) { 590 return NULL; 591 } 592 593 addr_rule->object = NXT_HTTP_ROUTE_SOURCE; 594 test->addr_rule = addr_rule; 595 test++; 596 } 597 598 if (mtcf.destination != NULL) { 599 addr_rule = nxt_http_route_addr_rule_create(task, mp, mtcf.destination); 600 if (addr_rule == NULL) { 601 return NULL; 602 } 603 604 addr_rule->object = NXT_HTTP_ROUTE_DESTINATION; 605 test->addr_rule = addr_rule; 606 test++; 607 } 608 609 return match; 610 } 611 612 613 static nxt_conf_map_t nxt_http_route_action_conf[] = { 614 { 615 nxt_string("pass"), 616 NXT_CONF_MAP_PTR, 617 offsetof(nxt_http_route_action_conf_t, pass) 618 }, 619 { 620 nxt_string("return"), 621 NXT_CONF_MAP_PTR, 622 offsetof(nxt_http_route_action_conf_t, ret) 623 }, 624 { 625 nxt_string("location"), 626 NXT_CONF_MAP_STR, 627 offsetof(nxt_http_route_action_conf_t, location) 628 }, 629 { 630 nxt_string("share"), 631 NXT_CONF_MAP_PTR, 632 offsetof(nxt_http_route_action_conf_t, share) 633 }, 634 { 635 nxt_string("proxy"), 636 NXT_CONF_MAP_PTR, 637 offsetof(nxt_http_route_action_conf_t, proxy) 638 }, 639 { 640 nxt_string("fallback"), 641 NXT_CONF_MAP_PTR, 642 offsetof(nxt_http_route_action_conf_t, fallback) 643 }, 644 }; 645 646 647 static nxt_int_t 648 nxt_http_route_action_create(nxt_router_temp_conf_t *tmcf, nxt_conf_value_t *cv, 649 nxt_http_action_t *action) 650 { 651 nxt_mp_t *mp; 652 nxt_int_t ret; 653 nxt_str_t name, *string; 654 nxt_uint_t encode; 655 nxt_conf_value_t *conf; 656 nxt_http_route_action_conf_t accf; 657 658 nxt_memzero(&accf, sizeof(accf)); 659 660 ret = nxt_conf_map_object(tmcf->mem_pool, cv, nxt_http_route_action_conf, 661 nxt_nitems(nxt_http_route_action_conf), &accf); 662 if (ret != NXT_OK) { 663 return ret; 664 } 665 666 nxt_memzero(action, sizeof(nxt_http_action_t)); 667 668 mp = tmcf->router_conf->mem_pool; 669 670 if (accf.ret != NULL) { 671 action->handler = nxt_http_return_handler; 672 action->u.return_code = nxt_conf_get_number(accf.ret); 673 674 if (accf.location.length > 0) { 675 if (nxt_is_complex_uri_encoded(accf.location.start, 676 accf.location.length)) 677 { 678 string = nxt_str_dup(mp, &action->name, &accf.location); 679 if (nxt_slow_path(string == NULL)) { 680 return NXT_ERROR; 681 } 682 683 } else { 684 string = &action->name; 685 686 encode = nxt_encode_complex_uri(NULL, accf.location.start, 687 accf.location.length); 688 string->length = accf.location.length + encode * 2; 689 690 string->start = nxt_mp_nget(mp, string->length); 691 if (nxt_slow_path(string->start == NULL)) { 692 return NXT_ERROR; 693 } 694 695 nxt_encode_complex_uri(string->start, accf.location.start, 696 accf.location.length); 697 } 698 } 699 700 return NXT_OK; 701 } 702 703 conf = accf.pass; 704 705 if (accf.share != NULL) { 706 conf = accf.share; 707 action->handler = nxt_http_static_handler; 708 709 } else if (accf.proxy != NULL) { 710 conf = accf.proxy; 711 } 712 713 nxt_conf_get_string(conf, &name); 714 715 string = nxt_str_dup(mp, &action->name, &name); 716 if (nxt_slow_path(string == NULL)) { 717 return NXT_ERROR; 718 } 719 720 if (accf.fallback != NULL) { 721 action->u.fallback = nxt_mp_alloc(mp, sizeof(nxt_http_action_t)); 722 if (nxt_slow_path(action->u.fallback == NULL)) { 723 return NXT_ERROR; 724 } 725 726 return nxt_http_route_action_create(tmcf, accf.fallback, 727 action->u.fallback); 728 } 729 730 if (accf.proxy != NULL) { 731 return nxt_http_proxy_create(mp, action); 732 } 733 734 return NXT_OK; 735 } 736 737 738 static nxt_http_route_table_t * 739 nxt_http_route_table_create(nxt_task_t *task, nxt_mp_t *mp, 740 nxt_conf_value_t *table_cv, nxt_http_route_object_t object, 741 nxt_bool_t case_sensitive, nxt_http_route_encoding_t encoding) 742 { 743 size_t size; 744 uint32_t i, n; 745 nxt_bool_t array; 746 nxt_conf_value_t *ruleset_cv; 747 nxt_http_route_table_t *table; 748 nxt_http_route_ruleset_t *ruleset; 749 750 array = (nxt_conf_type(table_cv) == NXT_CONF_ARRAY); 751 n = array ? nxt_conf_array_elements_count(table_cv) : 1; 752 size = sizeof(nxt_http_route_table_t) 753 + n * sizeof(nxt_http_route_ruleset_t *); 754 755 table = nxt_mp_alloc(mp, size); 756 if (nxt_slow_path(table == NULL)) { 757 return NULL; 758 } 759 760 table->items = n; 761 table->object = NXT_HTTP_ROUTE_TABLE; 762 763 if (!array) { 764 ruleset = nxt_http_route_ruleset_create(task, mp, table_cv, object, 765 case_sensitive, encoding); 766 if (nxt_slow_path(ruleset == NULL)) { 767 return NULL; 768 } 769 770 table->ruleset[0] = ruleset; 771 772 return table; 773 } 774 775 for (i = 0; i < n; i++) { 776 ruleset_cv = nxt_conf_get_array_element(table_cv, i); 777 778 ruleset = nxt_http_route_ruleset_create(task, mp, ruleset_cv, object, 779 case_sensitive, encoding); 780 if (nxt_slow_path(ruleset == NULL)) { 781 return NULL; 782 } 783 784 table->ruleset[i] = ruleset; 785 } 786 787 return table; 788 } 789 790 791 static nxt_http_route_ruleset_t * 792 nxt_http_route_ruleset_create(nxt_task_t *task, nxt_mp_t *mp, 793 nxt_conf_value_t *ruleset_cv, nxt_http_route_object_t object, 794 nxt_bool_t case_sensitive, nxt_http_route_encoding_t encoding) 795 { 796 size_t size; 797 uint32_t i, n, next; 798 nxt_str_t name; 799 nxt_conf_value_t *rule_cv; 800 nxt_http_route_rule_t *rule; 801 nxt_http_route_ruleset_t *ruleset; 802 803 n = nxt_conf_object_members_count(ruleset_cv); 804 size = sizeof(nxt_http_route_ruleset_t) 805 + n * sizeof(nxt_http_route_rule_t *); 806 807 ruleset = nxt_mp_alloc(mp, size); 808 if (nxt_slow_path(ruleset == NULL)) { 809 return NULL; 810 } 811 812 ruleset->items = n; 813 814 next = 0; 815 816 for (i = 0; i < n; i++) { 817 rule_cv = nxt_conf_next_object_member(ruleset_cv, &name, &next); 818 819 rule = nxt_http_route_rule_name_create(task, mp, rule_cv, &name, 820 case_sensitive, encoding); 821 if (nxt_slow_path(rule == NULL)) { 822 return NULL; 823 } 824 825 rule->object = object; 826 ruleset->rule[i] = rule; 827 } 828 829 return ruleset; 830 } 831 832 833 static nxt_http_route_rule_t * 834 nxt_http_route_rule_name_create(nxt_task_t *task, nxt_mp_t *mp, 835 nxt_conf_value_t *rule_cv, nxt_str_t *name, nxt_bool_t case_sensitive, 836 nxt_http_route_encoding_t encoding) 837 { 838 u_char c, *p, *src, *start, *end, plus; 839 uint8_t d0, d1; 840 uint32_t hash; 841 nxt_uint_t i; 842 nxt_http_route_rule_t *rule; 843 844 rule = nxt_http_route_rule_create(task, mp, rule_cv, case_sensitive, 845 NXT_HTTP_ROUTE_PATTERN_NOCASE, 846 encoding); 847 if (nxt_slow_path(rule == NULL)) { 848 return NULL; 849 } 850 851 rule->u.name.length = name->length; 852 853 p = nxt_mp_nget(mp, name->length); 854 if (nxt_slow_path(p == NULL)) { 855 return NULL; 856 } 857 858 hash = NXT_HTTP_FIELD_HASH_INIT; 859 rule->u.name.start = p; 860 861 if (encoding == NXT_HTTP_ROUTE_ENCODING_NONE) { 862 for (i = 0; i < name->length; i++) { 863 c = name->start[i]; 864 *p++ = c; 865 866 c = case_sensitive ? c : nxt_lowcase(c); 867 hash = nxt_http_field_hash_char(hash, c); 868 } 869 870 goto end; 871 } 872 873 plus = (encoding == NXT_HTTP_ROUTE_ENCODING_URI_PLUS) ? ' ' : '+'; 874 875 start = name->start; 876 end = start + name->length; 877 878 for (src = start; src < end; src++) { 879 c = *src; 880 881 switch (c) { 882 case '%': 883 if (nxt_slow_path(end - src <= 2)) { 884 return NULL; 885 } 886 887 d0 = nxt_hex2int[src[1]]; 888 d1 = nxt_hex2int[src[2]]; 889 src += 2; 890 891 if (nxt_slow_path((d0 | d1) >= 16)) { 892 return NULL; 893 } 894 895 c = (d0 << 4) + d1; 896 *p++ = c; 897 break; 898 899 case '+': 900 c = plus; 901 *p++ = c; 902 break; 903 904 default: 905 *p++ = c; 906 break; 907 } 908 909 c = case_sensitive ? c : nxt_lowcase(c); 910 hash = nxt_http_field_hash_char(hash, c); 911 } 912 913 rule->u.name.length = p - rule->u.name.start; 914 915 end: 916 917 rule->u.name.hash = nxt_http_field_hash_end(hash) & 0xFFFF; 918 919 return rule; 920 } 921 922 923 static nxt_http_route_rule_t * 924 nxt_http_route_rule_create(nxt_task_t *task, nxt_mp_t *mp, 925 nxt_conf_value_t *cv, nxt_bool_t case_sensitive, 926 nxt_http_route_pattern_case_t pattern_case, 927 nxt_http_route_encoding_t encoding) 928 { 929 size_t size; 930 uint32_t i, n; 931 nxt_int_t ret; 932 nxt_bool_t string; 933 nxt_conf_value_t *value; 934 nxt_http_route_rule_t *rule; 935 nxt_http_route_pattern_t *pattern; 936 937 string = (nxt_conf_type(cv) != NXT_CONF_ARRAY); 938 n = string ? 1 : nxt_conf_array_elements_count(cv); 939 size = sizeof(nxt_http_route_rule_t) + n * sizeof(nxt_http_route_pattern_t); 940 941 rule = nxt_mp_alloc(mp, size); 942 if (nxt_slow_path(rule == NULL)) { 943 return NULL; 944 } 945 946 rule->items = n; 947 948 pattern = &rule->pattern[0]; 949 950 if (string) { 951 pattern[0].case_sensitive = case_sensitive; 952 ret = nxt_http_route_pattern_create(task, mp, cv, &pattern[0], 953 pattern_case, encoding); 954 if (nxt_slow_path(ret != NXT_OK)) { 955 return NULL; 956 } 957 958 return rule; 959 } 960 961 nxt_conf_array_qsort(cv, nxt_http_pattern_compare); 962 963 for (i = 0; i < n; i++) { 964 pattern[i].case_sensitive = case_sensitive; 965 value = nxt_conf_get_array_element(cv, i); 966 967 ret = nxt_http_route_pattern_create(task, mp, value, &pattern[i], 968 pattern_case, encoding); 969 if (nxt_slow_path(ret != NXT_OK)) { 970 return NULL; 971 } 972 } 973 974 return rule; 975 } 976 977 978 static nxt_http_route_addr_rule_t * 979 nxt_http_route_addr_rule_create(nxt_task_t *task, nxt_mp_t *mp, 980 nxt_conf_value_t *cv) 981 { 982 size_t size; 983 uint32_t i, n; 984 nxt_bool_t array; 985 nxt_conf_value_t *value; 986 nxt_http_route_addr_rule_t *addr_rule; 987 nxt_http_route_addr_pattern_t *pattern; 988 989 array = (nxt_conf_type(cv) == NXT_CONF_ARRAY); 990 n = array ? nxt_conf_array_elements_count(cv) : 1; 991 992 size = sizeof(nxt_http_route_addr_rule_t) 993 + n * sizeof(nxt_http_route_addr_pattern_t); 994 995 addr_rule = nxt_mp_alloc(mp, size); 996 if (nxt_slow_path(addr_rule == NULL)) { 997 return NULL; 998 } 999 1000 addr_rule->items = n; 1001 1002 if (!array) { 1003 pattern = &addr_rule->addr_pattern[0]; 1004 1005 if (nxt_http_route_addr_pattern_parse(mp, pattern, cv) != NXT_OK) { 1006 return NULL; 1007 } 1008 1009 return addr_rule; 1010 } 1011 1012 for (i = 0; i < n; i++) { 1013 pattern = &addr_rule->addr_pattern[i]; 1014 value = nxt_conf_get_array_element(cv, i); 1015 1016 if (nxt_http_route_addr_pattern_parse(mp, pattern, value) != NXT_OK) { 1017 return NULL; 1018 } 1019 } 1020 1021 if (n > 1) { 1022 nxt_qsort(addr_rule->addr_pattern, addr_rule->items, 1023 sizeof(nxt_http_route_addr_pattern_t), 1024 nxt_http_addr_pattern_compare); 1025 } 1026 1027 return addr_rule; 1028 } 1029 1030 1031 static int 1032 nxt_http_pattern_compare(const void *one, const void *two) 1033 { 1034 nxt_str_t test; 1035 nxt_bool_t negative1, negative2; 1036 nxt_conf_value_t *value; 1037 1038 value = (nxt_conf_value_t *) one; 1039 nxt_conf_get_string(value, &test); 1040 negative1 = (test.length != 0 && test.start[0] == '!'); 1041 1042 value = (nxt_conf_value_t *) two; 1043 nxt_conf_get_string(value, &test); 1044 negative2 = (test.length != 0 && test.start[0] == '!'); 1045 1046 return (negative2 - negative1); 1047 } 1048 1049 1050 static int 1051 nxt_http_addr_pattern_compare(const void *one, const void *two) 1052 { 1053 const nxt_http_route_addr_pattern_t *p1, *p2; 1054 1055 p1 = one; 1056 p2 = two; 1057 1058 return (p2->base.negative - p1->base.negative); 1059 } 1060 1061 1062 static nxt_int_t 1063 nxt_http_route_pattern_create(nxt_task_t *task, nxt_mp_t *mp, 1064 nxt_conf_value_t *cv, nxt_http_route_pattern_t *pattern, 1065 nxt_http_route_pattern_case_t pattern_case, 1066 nxt_http_route_encoding_t encoding) 1067 { 1068 u_char c, *p, *end; 1069 nxt_str_t test, tmp; 1070 nxt_int_t ret; 1071 nxt_array_t *slices; 1072 #if (NXT_HAVE_REGEX) 1073 nxt_regex_t *re; 1074 nxt_regex_err_t err; 1075 #endif 1076 nxt_http_route_pattern_type_t type; 1077 nxt_http_route_pattern_slice_t *slice; 1078 1079 type = NXT_HTTP_ROUTE_PATTERN_EXACT; 1080 1081 nxt_conf_get_string(cv, &test); 1082 1083 pattern->u.pattern_slices = NULL; 1084 pattern->negative = 0; 1085 pattern->any = 1; 1086 pattern->min_length = 0; 1087 #if (NXT_HAVE_REGEX) 1088 pattern->regex = 0; 1089 #endif 1090 1091 if (test.length != 0 && test.start[0] == '!') { 1092 test.start++; 1093 test.length--; 1094 1095 pattern->negative = 1; 1096 pattern->any = 0; 1097 } 1098 1099 if (test.length > 0 && test.start[0] == '~') { 1100 #if (NXT_HAVE_REGEX) 1101 test.start++; 1102 test.length--; 1103 1104 re = nxt_regex_compile(mp, &test, &err); 1105 if (nxt_slow_path(re == NULL)) { 1106 if (err.offset < test.length) { 1107 nxt_alert(task, "nxt_regex_compile(%V) failed: %s at offset %d", 1108 &test, err.msg, (int) err.offset); 1109 return NXT_ERROR; 1110 } 1111 1112 nxt_alert(task, "nxt_regex_compile(%V) failed %s", &test, err.msg); 1113 1114 return NXT_ERROR; 1115 } 1116 1117 pattern->u.regex = re; 1118 pattern->regex = 1; 1119 1120 return NXT_OK; 1121 1122 #else 1123 return NXT_ERROR; 1124 #endif 1125 } 1126 1127 slices = nxt_array_create(mp, 1, sizeof(nxt_http_route_pattern_slice_t)); 1128 if (nxt_slow_path(slices == NULL)) { 1129 return NXT_ERROR; 1130 } 1131 1132 pattern->u.pattern_slices = slices; 1133 1134 if (test.length == 0) { 1135 slice = nxt_array_add(slices); 1136 if (nxt_slow_path(slice == NULL)) { 1137 return NXT_ERROR; 1138 } 1139 1140 slice->type = NXT_HTTP_ROUTE_PATTERN_EXACT; 1141 slice->start = NULL; 1142 slice->length = 0; 1143 1144 return NXT_OK; 1145 } 1146 1147 if (test.start[0] == '*') { 1148 /* 'type' is no longer 'EXACT', assume 'END'. */ 1149 type = NXT_HTTP_ROUTE_PATTERN_END; 1150 test.start++; 1151 test.length--; 1152 } 1153 1154 if (type == NXT_HTTP_ROUTE_PATTERN_EXACT) { 1155 tmp.start = test.start; 1156 1157 p = nxt_memchr(test.start, '*', test.length); 1158 1159 if (p == NULL) { 1160 /* No '*' found - EXACT pattern. */ 1161 tmp.length = test.length; 1162 type = NXT_HTTP_ROUTE_PATTERN_EXACT; 1163 1164 test.start += test.length; 1165 test.length = 0; 1166 1167 } else { 1168 /* '*' found - BEGIN pattern. */ 1169 tmp.length = p - test.start; 1170 type = NXT_HTTP_ROUTE_PATTERN_BEGIN; 1171 1172 test.start = p + 1; 1173 test.length -= tmp.length + 1; 1174 } 1175 1176 ret = nxt_http_route_pattern_slice(slices, &tmp, type, encoding, 1177 pattern_case); 1178 if (nxt_slow_path(ret != NXT_OK)) { 1179 return ret; 1180 } 1181 1182 pattern->min_length += tmp.length; 1183 } 1184 1185 end = test.start + test.length; 1186 1187 if (test.length != 0 && end[-1] != '*') { 1188 p = end - 1; 1189 1190 while (p != test.start) { 1191 c = *p--; 1192 1193 if (c == '*') { 1194 p += 2; 1195 break; 1196 } 1197 } 1198 1199 tmp.start = p; 1200 tmp.length = end - p; 1201 1202 test.length -= tmp.length; 1203 end = p; 1204 1205 ret = nxt_http_route_pattern_slice(slices, &tmp, 1206 NXT_HTTP_ROUTE_PATTERN_END, 1207 encoding, pattern_case); 1208 if (nxt_slow_path(ret != NXT_OK)) { 1209 return ret; 1210 } 1211 1212 pattern->min_length += tmp.length; 1213 } 1214 1215 tmp.start = test.start; 1216 tmp.length = 0; 1217 1218 p = tmp.start; 1219 1220 while (p != end) { 1221 c = *p++; 1222 1223 if (c != '*') { 1224 tmp.length++; 1225 continue; 1226 } 1227 1228 if (tmp.length == 0) { 1229 tmp.start = p; 1230 continue; 1231 } 1232 1233 ret = nxt_http_route_pattern_slice(slices, &tmp, 1234 NXT_HTTP_ROUTE_PATTERN_SUBSTRING, 1235 encoding, pattern_case); 1236 if (nxt_slow_path(ret != NXT_OK)) { 1237 return ret; 1238 } 1239 1240 pattern->min_length += tmp.length; 1241 1242 tmp.start = p; 1243 tmp.length = 0; 1244 } 1245 1246 if (tmp.length != 0) { 1247 ret = nxt_http_route_pattern_slice(slices, &tmp, 1248 NXT_HTTP_ROUTE_PATTERN_SUBSTRING, 1249 encoding, pattern_case); 1250 if (nxt_slow_path(ret != NXT_OK)) { 1251 return ret; 1252 } 1253 1254 pattern->min_length += tmp.length; 1255 } 1256 1257 return NXT_OK; 1258 } 1259 1260 1261 static nxt_int_t 1262 nxt_http_route_decode_str(nxt_str_t *str, nxt_http_route_encoding_t encoding) 1263 { 1264 u_char *start, *end; 1265 1266 switch (encoding) { 1267 case NXT_HTTP_ROUTE_ENCODING_NONE: 1268 break; 1269 1270 case NXT_HTTP_ROUTE_ENCODING_URI: 1271 start = str->start; 1272 1273 end = nxt_decode_uri(start, start, str->length); 1274 if (nxt_slow_path(end == NULL)) { 1275 return NXT_ERROR; 1276 } 1277 1278 str->length = end - start; 1279 break; 1280 1281 case NXT_HTTP_ROUTE_ENCODING_URI_PLUS: 1282 start = str->start; 1283 1284 end = nxt_decode_uri_plus(start, start, str->length); 1285 if (nxt_slow_path(end == NULL)) { 1286 return NXT_ERROR; 1287 } 1288 1289 str->length = end - start; 1290 break; 1291 1292 default: 1293 nxt_unreachable(); 1294 } 1295 1296 return NXT_OK; 1297 } 1298 1299 1300 static nxt_int_t 1301 nxt_http_route_pattern_slice(nxt_array_t *slices, 1302 nxt_str_t *test, 1303 nxt_http_route_pattern_type_t type, 1304 nxt_http_route_encoding_t encoding, 1305 nxt_http_route_pattern_case_t pattern_case) 1306 { 1307 u_char *start; 1308 nxt_int_t ret; 1309 nxt_http_route_pattern_slice_t *slice; 1310 1311 ret = nxt_http_route_decode_str(test, encoding); 1312 if (nxt_slow_path(ret != NXT_OK)) { 1313 return ret; 1314 } 1315 1316 start = nxt_mp_nget(slices->mem_pool, test->length); 1317 if (nxt_slow_path(start == NULL)) { 1318 return NXT_ERROR; 1319 } 1320 1321 switch (pattern_case) { 1322 1323 case NXT_HTTP_ROUTE_PATTERN_UPCASE: 1324 nxt_memcpy_upcase(start, test->start, test->length); 1325 break; 1326 1327 case NXT_HTTP_ROUTE_PATTERN_LOWCASE: 1328 nxt_memcpy_lowcase(start, test->start, test->length); 1329 break; 1330 1331 case NXT_HTTP_ROUTE_PATTERN_NOCASE: 1332 nxt_memcpy(start, test->start, test->length); 1333 break; 1334 } 1335 1336 slice = nxt_array_add(slices); 1337 if (nxt_slow_path(slice == NULL)) { 1338 return NXT_ERROR; 1339 } 1340 1341 slice->type = type; 1342 slice->start = start; 1343 slice->length = test->length; 1344 1345 return NXT_OK; 1346 } 1347 1348 1349 nxt_int_t 1350 nxt_http_routes_resolve(nxt_task_t *task, nxt_router_temp_conf_t *tmcf) 1351 { 1352 nxt_int_t ret; 1353 nxt_http_route_t **route, **end; 1354 nxt_http_routes_t *routes; 1355 1356 routes = tmcf->router_conf->routes; 1357 1358 if (routes != NULL) { 1359 route = &routes->route[0]; 1360 end = route + routes->items; 1361 1362 while (route < end) { 1363 ret = nxt_http_route_resolve(task, tmcf, *route); 1364 if (nxt_slow_path(ret != NXT_OK)) { 1365 return NXT_ERROR; 1366 } 1367 1368 route++; 1369 } 1370 } 1371 1372 return NXT_OK; 1373 } 1374 1375 1376 static nxt_int_t 1377 nxt_http_route_resolve(nxt_task_t *task, nxt_router_temp_conf_t *tmcf, 1378 nxt_http_route_t *route) 1379 { 1380 nxt_int_t ret; 1381 nxt_http_route_match_t **match, **end; 1382 1383 match = &route->match[0]; 1384 end = match + route->items; 1385 1386 while (match < end) { 1387 ret = nxt_http_action_resolve(task, tmcf, &(*match)->action); 1388 if (nxt_slow_path(ret != NXT_OK)) { 1389 return NXT_ERROR; 1390 } 1391 1392 match++; 1393 } 1394 1395 return NXT_OK; 1396 } 1397 1398 1399 static nxt_int_t 1400 nxt_http_action_resolve(nxt_task_t *task, nxt_router_temp_conf_t *tmcf, 1401 nxt_http_action_t *action) 1402 { 1403 nxt_var_t *var; 1404 nxt_int_t ret; 1405 1406 if (action->handler != NULL) { 1407 if (action->handler == nxt_http_static_handler 1408 && action->u.fallback != NULL) 1409 { 1410 return nxt_http_action_resolve(task, tmcf, action->u.fallback); 1411 } 1412 1413 return NXT_OK; 1414 } 1415 1416 if (nxt_is_var(&action->name)) { 1417 var = nxt_var_compile(&action->name, tmcf->router_conf->mem_pool); 1418 if (nxt_slow_path(var == NULL)) { 1419 return NXT_ERROR; 1420 } 1421 1422 action->u.var = var; 1423 action->handler = nxt_http_action_pass_var; 1424 return NXT_OK; 1425 } 1426 1427 ret = nxt_http_pass_find(task, tmcf->mem_pool, tmcf->router_conf, action); 1428 if (nxt_slow_path(ret != NXT_OK)) { 1429 return NXT_ERROR; 1430 } 1431 1432 return NXT_OK; 1433 } 1434 1435 1436 static nxt_http_action_t * 1437 nxt_http_action_pass_var(nxt_task_t *task, nxt_http_request_t *r, 1438 nxt_http_action_t *action) 1439 { 1440 nxt_var_t *var; 1441 nxt_int_t ret; 1442 1443 ret = nxt_var_query_init(&r->var_query, r, r->mem_pool); 1444 if (nxt_slow_path(ret != NXT_OK)) { 1445 goto fail; 1446 } 1447 1448 var = action->u.var; 1449 1450 action = nxt_mp_get(r->mem_pool, sizeof(nxt_http_action_t)); 1451 if (nxt_slow_path(action == NULL)) { 1452 goto fail; 1453 } 1454 1455 nxt_var_query(task, r->var_query, var, &action->name); 1456 nxt_var_query_resolve(task, r->var_query, action, 1457 nxt_http_action_pass_var_ready, 1458 nxt_http_action_pass_var_error); 1459 return NULL; 1460 1461 fail: 1462 1463 nxt_http_request_error(task, r, NXT_HTTP_INTERNAL_SERVER_ERROR); 1464 return NULL; 1465 } 1466 1467 1468 static void 1469 nxt_http_action_pass_var_ready(nxt_task_t *task, void *obj, void *data) 1470 { 1471 nxt_int_t ret; 1472 nxt_router_conf_t *rtcf; 1473 nxt_http_action_t *action; 1474 nxt_http_status_t status; 1475 nxt_http_request_t *r; 1476 1477 r = obj; 1478 action = data; 1479 rtcf = r->conf->socket_conf->router_conf; 1480 1481 nxt_debug(task, "http pass lookup: %V", &action->name); 1482 1483 ret = nxt_http_pass_find(task, r->mem_pool, rtcf, action); 1484 1485 if (ret != NXT_OK) { 1486 status = (ret == NXT_DECLINED) ? NXT_HTTP_NOT_FOUND 1487 : NXT_HTTP_INTERNAL_SERVER_ERROR; 1488 1489 nxt_http_request_error(task, r, status); 1490 return; 1491 } 1492 1493 nxt_http_request_action(task, r, action); 1494 } 1495 1496 1497 static void 1498 nxt_http_action_pass_var_error(nxt_task_t *task, void *obj, void *data) 1499 { 1500 nxt_http_request_t *r; 1501 1502 r = obj; 1503 1504 nxt_http_request_error(task, r, NXT_HTTP_INTERNAL_SERVER_ERROR); 1505 } 1506 1507 1508 static nxt_int_t 1509 nxt_http_pass_find(nxt_task_t *task, nxt_mp_t *mp, nxt_router_conf_t *rtcf, 1510 nxt_http_action_t *action) 1511 { 1512 nxt_str_t *targets; 1513 nxt_int_t ret; 1514 nxt_uint_t i; 1515 nxt_str_t segments[3]; 1516 1517 ret = nxt_http_pass_segments(mp, &action->name, segments, 3); 1518 if (nxt_slow_path(ret != NXT_OK)) { 1519 return ret; 1520 } 1521 1522 if (nxt_str_eq(&segments[0], "applications", 12)) { 1523 ret = nxt_router_listener_application(rtcf, &segments[1], action); 1524 1525 if (ret != NXT_OK) { 1526 return ret; 1527 } 1528 1529 if (segments[2].length != 0) { 1530 targets = action->u.application->targets; 1531 1532 for (i = 0; !nxt_strstr_eq(&segments[2], &targets[i]); i++); 1533 1534 action->target = i; 1535 1536 } else { 1537 action->target = 0; 1538 } 1539 1540 return NXT_OK; 1541 } 1542 1543 if (segments[2].length == 0) { 1544 if (nxt_str_eq(&segments[0], "upstreams", 9)) { 1545 return nxt_upstream_find(rtcf->upstreams, &segments[1], action); 1546 } 1547 1548 if (nxt_str_eq(&segments[0], "routes", 6)) { 1549 return nxt_http_route_find(rtcf->routes, &segments[1], action); 1550 } 1551 } 1552 1553 return NXT_DECLINED; 1554 } 1555 1556 1557 nxt_int_t 1558 nxt_http_pass_segments(nxt_mp_t *mp, nxt_str_t *pass, nxt_str_t *segments, 1559 nxt_uint_t n) 1560 { 1561 u_char *p; 1562 nxt_str_t rest; 1563 1564 if (nxt_slow_path(nxt_str_dup(mp, &rest, pass) == NULL)) { 1565 return NXT_ERROR; 1566 } 1567 1568 nxt_memzero(segments, n * sizeof(nxt_str_t)); 1569 1570 do { 1571 p = nxt_memchr(rest.start, '/', rest.length); 1572 1573 if (p != NULL) { 1574 n--; 1575 1576 if (n == 0) { 1577 return NXT_DECLINED; 1578 } 1579 1580 segments->length = p - rest.start; 1581 segments->start = rest.start; 1582 1583 rest.length -= segments->length + 1; 1584 rest.start = p + 1; 1585 1586 } else { 1587 n = 0; 1588 *segments = rest; 1589 } 1590 1591 if (segments->length == 0) { 1592 return NXT_DECLINED; 1593 } 1594 1595 p = nxt_decode_uri(segments->start, segments->start, segments->length); 1596 if (p == NULL) { 1597 return NXT_DECLINED; 1598 } 1599 1600 segments->length = p - segments->start; 1601 segments++; 1602 1603 } while (n); 1604 1605 return NXT_OK; 1606 } 1607 1608 1609 static nxt_int_t 1610 nxt_http_route_find(nxt_http_routes_t *routes, nxt_str_t *name, 1611 nxt_http_action_t *action) 1612 { 1613 nxt_http_route_t **route, **end; 1614 1615 route = &routes->route[0]; 1616 end = route + routes->items; 1617 1618 while (route < end) { 1619 if (nxt_strstr_eq(&(*route)->name, name)) { 1620 action->u.route = *route; 1621 action->handler = nxt_http_route_handler; 1622 1623 return NXT_OK; 1624 } 1625 1626 route++; 1627 } 1628 1629 return NXT_DECLINED; 1630 } 1631 1632 1633 nxt_http_action_t * 1634 nxt_http_action_create(nxt_task_t *task, nxt_router_temp_conf_t *tmcf, 1635 nxt_str_t *name) 1636 { 1637 nxt_int_t ret; 1638 nxt_http_action_t *action; 1639 1640 action = nxt_mp_alloc(tmcf->router_conf->mem_pool, 1641 sizeof(nxt_http_action_t)); 1642 if (nxt_slow_path(action == NULL)) { 1643 return NULL; 1644 } 1645 1646 action->name = *name; 1647 action->handler = NULL; 1648 1649 ret = nxt_http_action_resolve(task, tmcf, action); 1650 if (nxt_slow_path(ret != NXT_OK)) { 1651 return NULL; 1652 } 1653 1654 return action; 1655 } 1656 1657 1658 /* COMPATIBILITY: listener application. */ 1659 1660 nxt_http_action_t * 1661 nxt_http_pass_application(nxt_task_t *task, nxt_router_conf_t *rtcf, 1662 nxt_str_t *name) 1663 { 1664 nxt_http_action_t *action; 1665 1666 action = nxt_mp_alloc(rtcf->mem_pool, sizeof(nxt_http_action_t)); 1667 if (nxt_slow_path(action == NULL)) { 1668 return NULL; 1669 } 1670 1671 action->name = *name; 1672 1673 (void) nxt_router_listener_application(rtcf, name, action); 1674 1675 action->target = 0; 1676 1677 return action; 1678 } 1679 1680 1681 static nxt_http_action_t * 1682 nxt_http_route_handler(nxt_task_t *task, nxt_http_request_t *r, 1683 nxt_http_action_t *start) 1684 { 1685 nxt_http_route_t *route; 1686 nxt_http_action_t *action; 1687 nxt_http_route_match_t **match, **end; 1688 1689 route = start->u.route; 1690 match = &route->match[0]; 1691 end = match + route->items; 1692 1693 while (match < end) { 1694 action = nxt_http_route_match(task, r, *match); 1695 if (action != NULL) { 1696 return action; 1697 } 1698 1699 match++; 1700 } 1701 1702 nxt_http_request_error(task, r, NXT_HTTP_NOT_FOUND); 1703 1704 return NULL; 1705 } 1706 1707 1708 static nxt_http_action_t * 1709 nxt_http_route_match(nxt_task_t *task, nxt_http_request_t *r, 1710 nxt_http_route_match_t *match) 1711 { 1712 nxt_int_t ret; 1713 nxt_http_route_test_t *test, *end; 1714 1715 test = &match->test[0]; 1716 end = test + match->items; 1717 1718 while (test < end) { 1719 switch (test->rule->object) { 1720 case NXT_HTTP_ROUTE_TABLE: 1721 ret = nxt_http_route_table(r, test->table); 1722 break; 1723 case NXT_HTTP_ROUTE_SOURCE: 1724 ret = nxt_http_route_addr_rule(r, test->addr_rule, r->remote); 1725 break; 1726 case NXT_HTTP_ROUTE_DESTINATION: 1727 if (r->local == NULL && nxt_fast_path(r->proto.any != NULL)) { 1728 nxt_http_proto[r->protocol].local_addr(task, r); 1729 } 1730 1731 ret = nxt_http_route_addr_rule(r, test->addr_rule, r->local); 1732 break; 1733 default: 1734 ret = nxt_http_route_rule(r, test->rule); 1735 break; 1736 } 1737 1738 if (ret <= 0) { 1739 /* 0 => NULL, -1 => NXT_HTTP_ACTION_ERROR. */ 1740 return (nxt_http_action_t *) (intptr_t) ret; 1741 } 1742 1743 test++; 1744 } 1745 1746 return &match->action; 1747 } 1748 1749 1750 static nxt_int_t 1751 nxt_http_route_table(nxt_http_request_t *r, nxt_http_route_table_t *table) 1752 { 1753 nxt_int_t ret; 1754 nxt_http_route_ruleset_t **ruleset, **end; 1755 1756 ret = 1; 1757 ruleset = &table->ruleset[0]; 1758 end = ruleset + table->items; 1759 1760 while (ruleset < end) { 1761 ret = nxt_http_route_ruleset(r, *ruleset); 1762 1763 if (ret != 0) { 1764 return ret; 1765 } 1766 1767 ruleset++; 1768 } 1769 1770 return ret; 1771 } 1772 1773 1774 static nxt_int_t 1775 nxt_http_route_ruleset(nxt_http_request_t *r, nxt_http_route_ruleset_t *ruleset) 1776 { 1777 nxt_int_t ret; 1778 nxt_http_route_rule_t **rule, **end; 1779 1780 rule = &ruleset->rule[0]; 1781 end = rule + ruleset->items; 1782 1783 while (rule < end) { 1784 ret = nxt_http_route_rule(r, *rule); 1785 1786 if (ret <= 0) { 1787 return ret; 1788 } 1789 1790 rule++; 1791 } 1792 1793 return 1; 1794 } 1795 1796 1797 static nxt_int_t 1798 nxt_http_route_rule(nxt_http_request_t *r, nxt_http_route_rule_t *rule) 1799 { 1800 void *p, **pp; 1801 u_char *start; 1802 size_t length; 1803 nxt_str_t *s; 1804 1805 switch (rule->object) { 1806 1807 case NXT_HTTP_ROUTE_HEADER: 1808 return nxt_http_route_header(r, rule); 1809 1810 case NXT_HTTP_ROUTE_ARGUMENT: 1811 return nxt_http_route_arguments(r, rule); 1812 1813 case NXT_HTTP_ROUTE_COOKIE: 1814 return nxt_http_route_cookies(r, rule); 1815 1816 case NXT_HTTP_ROUTE_SCHEME: 1817 return nxt_http_route_scheme(r, rule); 1818 1819 default: 1820 break; 1821 } 1822 1823 p = nxt_pointer_to(r, rule->u.offset); 1824 1825 if (rule->object == NXT_HTTP_ROUTE_STRING) { 1826 s = p; 1827 1828 } else { 1829 /* NXT_HTTP_ROUTE_STRING_PTR */ 1830 pp = p; 1831 s = *pp; 1832 1833 if (s == NULL) { 1834 return 0; 1835 } 1836 } 1837 1838 length = s->length; 1839 start = s->start; 1840 1841 return nxt_http_route_test_rule(r, rule, start, length); 1842 } 1843 1844 1845 static nxt_int_t 1846 nxt_http_route_addr_pattern_match(nxt_http_route_addr_pattern_t *p, 1847 nxt_sockaddr_t *sa) 1848 { 1849 #if (NXT_INET6) 1850 uint32_t i; 1851 #endif 1852 in_port_t in_port; 1853 nxt_int_t match; 1854 struct sockaddr_in *sin; 1855 #if (NXT_INET6) 1856 struct sockaddr_in6 *sin6; 1857 #endif 1858 nxt_http_route_addr_base_t *base; 1859 1860 base = &p->base; 1861 1862 switch (sa->u.sockaddr.sa_family) { 1863 1864 case AF_INET: 1865 1866 match = (base->addr_family == AF_INET 1867 || base->addr_family == AF_UNSPEC); 1868 if (!match) { 1869 break; 1870 } 1871 1872 sin = &sa->u.sockaddr_in; 1873 in_port = ntohs(sin->sin_port); 1874 1875 match = (in_port >= base->port.start && in_port <= base->port.end); 1876 if (!match) { 1877 break; 1878 } 1879 1880 switch (base->match_type) { 1881 1882 case NXT_HTTP_ROUTE_ADDR_ANY: 1883 break; 1884 1885 case NXT_HTTP_ROUTE_ADDR_EXACT: 1886 match = (nxt_memcmp(&sin->sin_addr, &p->addr.v4.start, 1887 sizeof(struct in_addr)) 1888 == 0); 1889 break; 1890 1891 case NXT_HTTP_ROUTE_ADDR_RANGE: 1892 match = (nxt_memcmp(&sin->sin_addr, &p->addr.v4.start, 1893 sizeof(struct in_addr)) >= 0 1894 && nxt_memcmp(&sin->sin_addr, &p->addr.v4.end, 1895 sizeof(struct in_addr)) <= 0); 1896 break; 1897 1898 case NXT_HTTP_ROUTE_ADDR_CIDR: 1899 match = ((sin->sin_addr.s_addr & p->addr.v4.end) 1900 == p->addr.v4.start); 1901 break; 1902 1903 default: 1904 nxt_unreachable(); 1905 } 1906 1907 break; 1908 1909 #if (NXT_INET6) 1910 case AF_INET6: 1911 1912 match = (base->addr_family == AF_INET6 1913 || base->addr_family == AF_UNSPEC); 1914 if (!match) { 1915 break; 1916 } 1917 1918 sin6 = &sa->u.sockaddr_in6; 1919 in_port = ntohs(sin6->sin6_port); 1920 1921 match = (in_port >= base->port.start && in_port <= base->port.end); 1922 if (!match) { 1923 break; 1924 } 1925 1926 switch (base->match_type) { 1927 1928 case NXT_HTTP_ROUTE_ADDR_ANY: 1929 break; 1930 1931 case NXT_HTTP_ROUTE_ADDR_EXACT: 1932 match = (nxt_memcmp(&sin6->sin6_addr, &p->addr.v6.start, 1933 sizeof(struct in6_addr)) 1934 == 0); 1935 break; 1936 1937 case NXT_HTTP_ROUTE_ADDR_RANGE: 1938 match = (nxt_memcmp(&sin6->sin6_addr, &p->addr.v6.start, 1939 sizeof(struct in6_addr)) >= 0 1940 && nxt_memcmp(&sin6->sin6_addr, &p->addr.v6.end, 1941 sizeof(struct in6_addr)) <= 0); 1942 break; 1943 1944 case NXT_HTTP_ROUTE_ADDR_CIDR: 1945 for (i = 0; i < 16; i++) { 1946 match = ((sin6->sin6_addr.s6_addr[i] 1947 & p->addr.v6.end.s6_addr[i]) 1948 == p->addr.v6.start.s6_addr[i]); 1949 1950 if (!match) { 1951 break; 1952 } 1953 } 1954 1955 break; 1956 1957 default: 1958 nxt_unreachable(); 1959 } 1960 1961 break; 1962 #endif 1963 1964 default: 1965 match = 0; 1966 break; 1967 } 1968 1969 return match ^ base->negative; 1970 } 1971 1972 1973 static nxt_int_t 1974 nxt_http_route_addr_rule(nxt_http_request_t *r, 1975 nxt_http_route_addr_rule_t *addr_rule, nxt_sockaddr_t *sa) 1976 { 1977 uint32_t n; 1978 nxt_bool_t matches; 1979 nxt_http_route_addr_pattern_t *p; 1980 1981 n = addr_rule->items; 1982 p = &addr_rule->addr_pattern[0] - 1; 1983 1984 do { 1985 p++; 1986 n--; 1987 1988 matches = nxt_http_route_addr_pattern_match(p, sa); 1989 1990 if (p->base.negative) { 1991 if (matches) { 1992 continue; 1993 } 1994 1995 return 0; 1996 } 1997 1998 if (matches) { 1999 return 1; 2000 } 2001 2002 } while (n > 0); 2003 2004 return p->base.negative; 2005 } 2006 2007 2008 static nxt_int_t 2009 nxt_http_route_header(nxt_http_request_t *r, nxt_http_route_rule_t *rule) 2010 { 2011 nxt_int_t ret; 2012 nxt_http_field_t *f; 2013 2014 ret = 0; 2015 2016 nxt_list_each(f, r->fields) { 2017 2018 if (rule->u.name.hash != f->hash 2019 || rule->u.name.length != f->name_length 2020 || nxt_strncasecmp(rule->u.name.start, f->name, f->name_length) 2021 != 0) 2022 { 2023 continue; 2024 } 2025 2026 ret = nxt_http_route_test_rule(r, rule, f->value, f->value_length); 2027 if (nxt_slow_path(ret == NXT_ERROR)) { 2028 return NXT_ERROR; 2029 } 2030 2031 if (ret == 0) { 2032 return ret; 2033 } 2034 2035 } nxt_list_loop; 2036 2037 return ret; 2038 } 2039 2040 2041 static nxt_int_t 2042 nxt_http_route_arguments(nxt_http_request_t *r, nxt_http_route_rule_t *rule) 2043 { 2044 nxt_array_t *arguments; 2045 2046 if (r->args == NULL) { 2047 return 0; 2048 } 2049 2050 arguments = nxt_http_route_arguments_parse(r); 2051 if (nxt_slow_path(arguments == NULL)) { 2052 return -1; 2053 } 2054 2055 return nxt_http_route_test_argument(r, rule, arguments); 2056 } 2057 2058 2059 static nxt_array_t * 2060 nxt_http_route_arguments_parse(nxt_http_request_t *r) 2061 { 2062 size_t name_length; 2063 u_char c, *p, *dst, *dst_start, *start, *end, *name; 2064 uint8_t d0, d1; 2065 uint32_t hash; 2066 nxt_bool_t valid; 2067 nxt_array_t *args; 2068 nxt_http_name_value_t *nv; 2069 2070 if (r->arguments != NULL) { 2071 return r->arguments; 2072 } 2073 2074 args = nxt_array_create(r->mem_pool, 2, sizeof(nxt_http_name_value_t)); 2075 if (nxt_slow_path(args == NULL)) { 2076 return NULL; 2077 } 2078 2079 hash = NXT_HTTP_FIELD_HASH_INIT; 2080 valid = 1; 2081 name = NULL; 2082 name_length = 0; 2083 2084 dst_start = nxt_mp_nget(r->mem_pool, r->args->length); 2085 if (nxt_slow_path(dst_start == NULL)) { 2086 return NULL; 2087 } 2088 2089 start = r->args->start; 2090 end = start + r->args->length; 2091 2092 for (p = start, dst = dst_start; p < end; p++, dst++) { 2093 c = *p; 2094 *dst = c; 2095 2096 switch (c) { 2097 case '=': 2098 if (name != NULL) { 2099 break; 2100 } 2101 2102 name_length = dst - dst_start; 2103 valid = (name_length != 0); 2104 name = dst_start; 2105 dst_start = dst + 1; 2106 2107 continue; 2108 2109 case '&': 2110 if (valid) { 2111 nv = nxt_http_route_argument(args, name, name_length, hash, 2112 dst_start, dst); 2113 if (nxt_slow_path(nv == NULL)) { 2114 return NULL; 2115 } 2116 } 2117 2118 hash = NXT_HTTP_FIELD_HASH_INIT; 2119 name_length = 0; 2120 valid = 1; 2121 name = NULL; 2122 dst_start = dst + 1; 2123 2124 continue; 2125 2126 case '+': 2127 c = ' '; 2128 *dst = ' '; 2129 2130 break; 2131 2132 case '%': 2133 if (nxt_slow_path(end - p <= 2)) { 2134 break; 2135 } 2136 2137 d0 = nxt_hex2int[p[1]]; 2138 d1 = nxt_hex2int[p[2]]; 2139 2140 if (nxt_slow_path((d0 | d1) >= 16)) { 2141 break; 2142 } 2143 2144 p += 2; 2145 c = (d0 << 4) + d1; 2146 *dst = c; 2147 2148 break; 2149 } 2150 2151 if (name == NULL) { 2152 hash = nxt_http_field_hash_char(hash, c); 2153 } 2154 } 2155 2156 if (valid) { 2157 nv = nxt_http_route_argument(args, name, name_length, hash, dst_start, 2158 dst); 2159 if (nxt_slow_path(nv == NULL)) { 2160 return NULL; 2161 } 2162 } 2163 2164 r->arguments = args; 2165 2166 return args; 2167 } 2168 2169 2170 static nxt_http_name_value_t * 2171 nxt_http_route_argument(nxt_array_t *array, u_char *name, size_t name_length, 2172 uint32_t hash, u_char *start, u_char *end) 2173 { 2174 size_t length; 2175 nxt_http_name_value_t *nv; 2176 2177 nv = nxt_array_add(array); 2178 if (nxt_slow_path(nv == NULL)) { 2179 return NULL; 2180 } 2181 2182 nv->hash = nxt_http_field_hash_end(hash) & 0xFFFF; 2183 2184 length = end - start; 2185 2186 if (name == NULL) { 2187 name_length = length; 2188 name = start; 2189 length = 0; 2190 } 2191 2192 nv->name_length = name_length; 2193 nv->value_length = length; 2194 nv->name = name; 2195 nv->value = start; 2196 2197 return nv; 2198 } 2199 2200 2201 static nxt_int_t 2202 nxt_http_route_test_argument(nxt_http_request_t *r, 2203 nxt_http_route_rule_t *rule, nxt_array_t *array) 2204 { 2205 nxt_int_t ret; 2206 nxt_http_name_value_t *nv, *end; 2207 2208 ret = 0; 2209 2210 nv = array->elts; 2211 end = nv + array->nelts; 2212 2213 while (nv < end) { 2214 2215 if (rule->u.name.hash == nv->hash 2216 && rule->u.name.length == nv->name_length 2217 && nxt_memcmp(rule->u.name.start, nv->name, nv->name_length) == 0) 2218 { 2219 ret = nxt_http_route_test_rule(r, rule, nv->value, 2220 nv->value_length); 2221 if (nxt_slow_path(ret == NXT_ERROR)) { 2222 return NXT_ERROR; 2223 } 2224 2225 if (ret == 0) { 2226 break; 2227 } 2228 } 2229 2230 nv++; 2231 } 2232 2233 return ret; 2234 } 2235 2236 2237 static nxt_int_t 2238 nxt_http_route_scheme(nxt_http_request_t *r, nxt_http_route_rule_t *rule) 2239 { 2240 nxt_bool_t tls, https; 2241 nxt_http_route_pattern_slice_t *pattern_slice; 2242 2243 pattern_slice = rule->pattern[0].u.pattern_slices->elts; 2244 https = (pattern_slice->length == nxt_length("https")); 2245 tls = (r->tls != NULL); 2246 2247 return (tls == https); 2248 } 2249 2250 2251 static nxt_int_t 2252 nxt_http_route_cookies(nxt_http_request_t *r, nxt_http_route_rule_t *rule) 2253 { 2254 nxt_array_t *cookies; 2255 2256 cookies = nxt_http_route_cookies_parse(r); 2257 if (nxt_slow_path(cookies == NULL)) { 2258 return -1; 2259 } 2260 2261 return nxt_http_route_test_cookie(r, rule, cookies); 2262 } 2263 2264 2265 static nxt_array_t * 2266 nxt_http_route_cookies_parse(nxt_http_request_t *r) 2267 { 2268 nxt_int_t ret; 2269 nxt_array_t *cookies; 2270 nxt_http_field_t *f; 2271 2272 if (r->cookies != NULL) { 2273 return r->cookies; 2274 } 2275 2276 cookies = nxt_array_create(r->mem_pool, 2, sizeof(nxt_http_name_value_t)); 2277 if (nxt_slow_path(cookies == NULL)) { 2278 return NULL; 2279 } 2280 2281 nxt_list_each(f, r->fields) { 2282 2283 if (f->hash != NXT_COOKIE_HASH 2284 || f->name_length != 6 2285 || nxt_strncasecmp(f->name, (u_char *) "Cookie", 6) != 0) 2286 { 2287 continue; 2288 } 2289 2290 ret = nxt_http_route_cookie_parse(cookies, f->value, 2291 f->value + f->value_length); 2292 if (ret != NXT_OK) { 2293 return NULL; 2294 } 2295 2296 } nxt_list_loop; 2297 2298 r->cookies = cookies; 2299 2300 return cookies; 2301 } 2302 2303 2304 static nxt_int_t 2305 nxt_http_route_cookie_parse(nxt_array_t *cookies, u_char *start, u_char *end) 2306 { 2307 size_t name_length; 2308 u_char c, *p, *name; 2309 nxt_http_name_value_t *nv; 2310 2311 name = NULL; 2312 name_length = 0; 2313 2314 for (p = start; p < end; p++) { 2315 c = *p; 2316 2317 if (c == '=') { 2318 while (start[0] == ' ') { start++; } 2319 2320 name_length = p - start; 2321 2322 if (name_length != 0) { 2323 name = start; 2324 } 2325 2326 start = p + 1; 2327 2328 } else if (c == ';') { 2329 if (name != NULL) { 2330 nv = nxt_http_route_cookie(cookies, name, name_length, 2331 start, p); 2332 if (nxt_slow_path(nv == NULL)) { 2333 return NXT_ERROR; 2334 } 2335 } 2336 2337 name = NULL; 2338 start = p + 1; 2339 } 2340 } 2341 2342 if (name != NULL) { 2343 nv = nxt_http_route_cookie(cookies, name, name_length, start, p); 2344 if (nxt_slow_path(nv == NULL)) { 2345 return NXT_ERROR; 2346 } 2347 } 2348 2349 return NXT_OK; 2350 } 2351 2352 2353 static nxt_http_name_value_t * 2354 nxt_http_route_cookie(nxt_array_t *array, u_char *name, size_t name_length, 2355 u_char *start, u_char *end) 2356 { 2357 u_char c, *p; 2358 uint32_t hash; 2359 nxt_http_name_value_t *nv; 2360 2361 nv = nxt_array_add(array); 2362 if (nxt_slow_path(nv == NULL)) { 2363 return NULL; 2364 } 2365 2366 nv->name_length = name_length; 2367 nv->name = name; 2368 2369 hash = NXT_HTTP_FIELD_HASH_INIT; 2370 2371 for (p = name; p < name + name_length; p++) { 2372 c = *p; 2373 hash = nxt_http_field_hash_char(hash, c); 2374 } 2375 2376 nv->hash = nxt_http_field_hash_end(hash) & 0xFFFF; 2377 2378 while (start < end && end[-1] == ' ') { end--; } 2379 2380 nv->value_length = end - start; 2381 nv->value = start; 2382 2383 return nv; 2384 } 2385 2386 2387 static nxt_int_t 2388 nxt_http_route_test_cookie(nxt_http_request_t *r, 2389 nxt_http_route_rule_t *rule, nxt_array_t *array) 2390 { 2391 nxt_int_t ret; 2392 nxt_http_name_value_t *nv, *end; 2393 2394 ret = 0; 2395 2396 nv = array->elts; 2397 end = nv + array->nelts; 2398 2399 while (nv < end) { 2400 2401 if (rule->u.name.hash == nv->hash 2402 && rule->u.name.length == nv->name_length 2403 && nxt_memcmp(rule->u.name.start, nv->name, nv->name_length) == 0) 2404 { 2405 ret = nxt_http_route_test_rule(r, rule, nv->value, 2406 nv->value_length); 2407 if (nxt_slow_path(ret == NXT_ERROR)) { 2408 return NXT_ERROR; 2409 } 2410 2411 if (ret == 0) { 2412 break; 2413 } 2414 } 2415 2416 nv++; 2417 } 2418 2419 return ret; 2420 } 2421 2422 2423 static nxt_int_t 2424 nxt_http_route_test_rule(nxt_http_request_t *r, nxt_http_route_rule_t *rule, 2425 u_char *start, size_t length) 2426 { 2427 nxt_int_t ret; 2428 nxt_http_route_pattern_t *pattern, *end; 2429 2430 ret = 1; 2431 pattern = &rule->pattern[0]; 2432 end = pattern + rule->items; 2433 2434 while (pattern < end) { 2435 ret = nxt_http_route_pattern(r, pattern, start, length); 2436 if (nxt_slow_path(ret == NXT_ERROR)) { 2437 return NXT_ERROR; 2438 } 2439 2440 /* nxt_http_route_pattern() returns either 1 or 0. */ 2441 ret ^= pattern->negative; 2442 2443 if (pattern->any == ret) { 2444 return ret; 2445 } 2446 2447 pattern++; 2448 } 2449 2450 return ret; 2451 } 2452 2453 2454 static nxt_int_t 2455 nxt_http_route_pattern(nxt_http_request_t *r, nxt_http_route_pattern_t *pattern, 2456 u_char *start, size_t length) 2457 { 2458 u_char *p, *end, *test; 2459 size_t test_length; 2460 uint32_t i; 2461 nxt_array_t *pattern_slices; 2462 nxt_http_route_pattern_slice_t *pattern_slice; 2463 2464 #if (NXT_HAVE_REGEX) 2465 if (pattern->regex) { 2466 if (r->regex_match == NULL) { 2467 r->regex_match = nxt_regex_match_create(r->mem_pool, 0); 2468 if (nxt_slow_path(r->regex_match == NULL)) { 2469 return NXT_ERROR; 2470 } 2471 } 2472 2473 return nxt_regex_match(pattern->u.regex, start, length, r->regex_match); 2474 } 2475 #endif 2476 2477 if (length < pattern->min_length) { 2478 return 0; 2479 } 2480 2481 nxt_assert(pattern->u.pattern_slices != NULL); 2482 2483 pattern_slices = pattern->u.pattern_slices; 2484 pattern_slice = pattern_slices->elts; 2485 end = start + length; 2486 2487 for (i = 0; i < pattern_slices->nelts; i++, pattern_slice++) { 2488 test = pattern_slice->start; 2489 test_length = pattern_slice->length; 2490 2491 switch (pattern_slice->type) { 2492 case NXT_HTTP_ROUTE_PATTERN_EXACT: 2493 return ((length == pattern->min_length) && 2494 nxt_http_route_memcmp(start, test, test_length, 2495 pattern->case_sensitive)); 2496 2497 case NXT_HTTP_ROUTE_PATTERN_BEGIN: 2498 if (nxt_http_route_memcmp(start, test, test_length, 2499 pattern->case_sensitive)) 2500 { 2501 start += test_length; 2502 break; 2503 } 2504 2505 return 0; 2506 2507 case NXT_HTTP_ROUTE_PATTERN_END: 2508 p = end - test_length; 2509 2510 if (nxt_http_route_memcmp(p, test, test_length, 2511 pattern->case_sensitive)) 2512 { 2513 end = p; 2514 break; 2515 } 2516 2517 return 0; 2518 2519 case NXT_HTTP_ROUTE_PATTERN_SUBSTRING: 2520 if (pattern->case_sensitive) { 2521 p = nxt_memstrn(start, end, (char *) test, test_length); 2522 2523 } else { 2524 p = nxt_memcasestrn(start, end, (char *) test, test_length); 2525 } 2526 2527 if (p == NULL) { 2528 return 0; 2529 } 2530 2531 start = p + test_length; 2532 } 2533 } 2534 2535 return 1; 2536 } 2537 2538 2539 static nxt_int_t 2540 nxt_http_route_memcmp(u_char *start, u_char *test, size_t test_length, 2541 nxt_bool_t case_sensitive) 2542 { 2543 nxt_int_t n; 2544 2545 if (case_sensitive) { 2546 n = nxt_memcmp(start, test, test_length); 2547 2548 } else { 2549 n = nxt_memcasecmp(start, test, test_length); 2550 } 2551 2552 return (n == 0); 2553 } 2554