/* * Copyright (C) Igor Sysoev * Copyright (C) NGINX, Inc. */ #include #include #include #include typedef enum { NXT_HTTP_ROUTE_TABLE = 0, NXT_HTTP_ROUTE_STRING, NXT_HTTP_ROUTE_STRING_PTR, NXT_HTTP_ROUTE_HEADER, NXT_HTTP_ROUTE_ARGUMENT, NXT_HTTP_ROUTE_COOKIE, NXT_HTTP_ROUTE_SCHEME, NXT_HTTP_ROUTE_SOURCE, NXT_HTTP_ROUTE_DESTINATION, } nxt_http_route_object_t; typedef enum { NXT_HTTP_ROUTE_PATTERN_EXACT = 0, NXT_HTTP_ROUTE_PATTERN_BEGIN, NXT_HTTP_ROUTE_PATTERN_END, NXT_HTTP_ROUTE_PATTERN_SUBSTRING, } nxt_http_route_pattern_type_t; typedef enum { NXT_HTTP_ROUTE_PATTERN_NOCASE = 0, NXT_HTTP_ROUTE_PATTERN_LOWCASE, NXT_HTTP_ROUTE_PATTERN_UPCASE, } nxt_http_route_pattern_case_t; typedef enum { NXT_HTTP_ROUTE_ENCODING_NONE = 0, NXT_HTTP_ROUTE_ENCODING_URI, NXT_HTTP_ROUTE_ENCODING_URI_PLUS } nxt_http_route_encoding_t; typedef struct { nxt_conf_value_t *pass; nxt_conf_value_t *ret; nxt_str_t location; nxt_conf_value_t *share; nxt_conf_value_t *proxy; nxt_conf_value_t *fallback; } nxt_http_route_action_conf_t; typedef struct { nxt_conf_value_t *host; nxt_conf_value_t *uri; nxt_conf_value_t *method; nxt_conf_value_t *headers; nxt_conf_value_t *arguments; nxt_conf_value_t *cookies; nxt_conf_value_t *scheme; nxt_conf_value_t *source; nxt_conf_value_t *destination; } nxt_http_route_match_conf_t; typedef struct { u_char *start; uint32_t length; nxt_http_route_pattern_type_t type:8; } nxt_http_route_pattern_slice_t; typedef struct { uint32_t min_length; nxt_array_t *pattern_slices; uint8_t case_sensitive; /* 1 bit */ uint8_t negative; /* 1 bit */ uint8_t any; /* 1 bit */ } nxt_http_route_pattern_t; typedef struct { uint16_t hash; uint16_t name_length; uint32_t value_length; u_char *name; u_char *value; } nxt_http_name_value_t; typedef struct { uint16_t hash; uint16_t name_length; uint32_t value_length; u_char *name; u_char *value; } nxt_http_cookie_t; typedef struct { /* The object must be the first field. */ nxt_http_route_object_t object:8; uint32_t items; union { uintptr_t offset; struct { u_char *start; uint16_t hash; uint16_t length; } name; } u; nxt_http_route_pattern_t pattern[0]; } nxt_http_route_rule_t; typedef struct { uint32_t items; nxt_http_route_rule_t *rule[0]; } nxt_http_route_ruleset_t; typedef struct { /* The object must be the first field. */ nxt_http_route_object_t object:8; uint32_t items; nxt_http_route_ruleset_t *ruleset[0]; } nxt_http_route_table_t; typedef struct { /* The object must be the first field. */ nxt_http_route_object_t object:8; uint32_t items; nxt_http_route_addr_pattern_t addr_pattern[0]; } nxt_http_route_addr_rule_t; typedef union { nxt_http_route_rule_t *rule; nxt_http_route_table_t *table; nxt_http_route_addr_rule_t *addr_rule; } nxt_http_route_test_t; typedef struct { uint32_t items; nxt_http_action_t action; nxt_http_route_test_t test[0]; } nxt_http_route_match_t; struct nxt_http_route_s { nxt_str_t name; uint32_t items; nxt_http_route_match_t *match[0]; }; struct nxt_http_routes_s { uint32_t items; nxt_http_route_t *route[0]; }; #define NXT_COOKIE_HASH \ (nxt_http_field_hash_end( \ nxt_http_field_hash_char( \ nxt_http_field_hash_char( \ nxt_http_field_hash_char( \ nxt_http_field_hash_char( \ nxt_http_field_hash_char( \ nxt_http_field_hash_char(NXT_HTTP_FIELD_HASH_INIT, \ 'c'), 'o'), 'o'), 'k'), 'i'), 'e')) & 0xFFFF) static nxt_http_route_t *nxt_http_route_create(nxt_task_t *task, nxt_router_temp_conf_t *tmcf, nxt_conf_value_t *cv); static nxt_http_route_match_t *nxt_http_route_match_create(nxt_task_t *task, nxt_router_temp_conf_t *tmcf, nxt_conf_value_t *cv); static nxt_int_t nxt_http_route_action_create(nxt_router_temp_conf_t *tmcf, nxt_conf_value_t *cv, nxt_http_action_t *action); static nxt_http_route_table_t *nxt_http_route_table_create(nxt_task_t *task, nxt_mp_t *mp, nxt_conf_value_t *table_cv, nxt_http_route_object_t object, nxt_bool_t case_sensitive, nxt_http_route_encoding_t encoding); static nxt_http_route_ruleset_t *nxt_http_route_ruleset_create(nxt_task_t *task, nxt_mp_t *mp, nxt_conf_value_t *ruleset_cv, nxt_http_route_object_t object, nxt_bool_t case_sensitive, nxt_http_route_encoding_t encoding); static nxt_http_route_rule_t *nxt_http_route_rule_name_create(nxt_task_t *task, nxt_mp_t *mp, nxt_conf_value_t *rule_cv, nxt_str_t *name, nxt_bool_t case_sensitive, nxt_http_route_encoding_t encoding); static nxt_http_route_addr_rule_t *nxt_http_route_addr_rule_create( nxt_task_t *task, nxt_mp_t *mp, nxt_conf_value_t *cv); static nxt_http_route_rule_t *nxt_http_route_rule_create(nxt_task_t *task, nxt_mp_t *mp, nxt_conf_value_t *cv, nxt_bool_t case_sensitive, nxt_http_route_pattern_case_t pattern_case, nxt_http_route_encoding_t encoding); static int nxt_http_pattern_compare(const void *one, const void *two); static int nxt_http_addr_pattern_compare(const void *one, const void *two); static nxt_int_t nxt_http_route_pattern_create(nxt_task_t *task, nxt_mp_t *mp, nxt_conf_value_t *cv, nxt_http_route_pattern_t *pattern, nxt_http_route_pattern_case_t pattern_case, nxt_http_route_encoding_t encoding); static nxt_int_t nxt_http_route_decode_str(nxt_str_t *str, nxt_http_route_encoding_t encoding); static nxt_int_t nxt_http_route_pattern_slice(nxt_array_t *slices, nxt_str_t *test, nxt_http_route_pattern_type_t type, nxt_http_route_encoding_t encoding, nxt_http_route_pattern_case_t pattern_case); static nxt_int_t nxt_http_route_resolve(nxt_task_t *task, nxt_router_temp_conf_t *tmcf, nxt_http_route_t *route); static nxt_int_t nxt_http_action_resolve(nxt_task_t *task, nxt_router_temp_conf_t *tmcf, nxt_http_action_t *action); static nxt_http_action_t *nxt_http_action_pass_var(nxt_task_t *task, nxt_http_request_t *r, nxt_http_action_t *action); static void nxt_http_action_pass_var_ready(nxt_task_t *task, void *obj, void *data); static void nxt_http_action_pass_var_error(nxt_task_t *task, void *obj, void *data); static nxt_int_t nxt_http_pass_find(nxt_task_t *task, nxt_mp_t *mp, nxt_router_conf_t *rtcf, nxt_http_action_t *action); static nxt_int_t nxt_http_route_find(nxt_http_routes_t *routes, nxt_str_t *name, nxt_http_action_t *action); static nxt_http_action_t *nxt_http_route_handler(nxt_task_t *task, nxt_http_request_t *r, nxt_http_action_t *start); static nxt_http_action_t *nxt_http_route_match(nxt_task_t *task, nxt_http_request_t *r, nxt_http_route_match_t *match); static nxt_int_t nxt_http_route_table(nxt_http_request_t *r, nxt_http_route_table_t *table); static nxt_int_t nxt_http_route_ruleset(nxt_http_request_t *r, nxt_http_route_ruleset_t *ruleset); static nxt_int_t nxt_http_route_addr_rule(nxt_http_request_t *r, nxt_http_route_addr_rule_t *addr_rule, nxt_sockaddr_t *sockaddr); static nxt_int_t nxt_http_route_rule(nxt_http_request_t *r, nxt_http_route_rule_t *rule); static nxt_int_t nxt_http_route_header(nxt_http_request_t *r, nxt_http_route_rule_t *rule); static nxt_int_t nxt_http_route_arguments(nxt_http_request_t *r, nxt_http_route_rule_t *rule); static nxt_array_t *nxt_http_route_arguments_parse(nxt_http_request_t *r); static nxt_http_name_value_t *nxt_http_route_argument(nxt_array_t *array, u_char *name, size_t name_length, uint32_t hash, u_char *start, u_char *end); static nxt_int_t nxt_http_route_test_argument(nxt_http_request_t *r, nxt_http_route_rule_t *rule, nxt_array_t *array); static nxt_int_t nxt_http_route_scheme(nxt_http_request_t *r, nxt_http_route_rule_t *rule); static nxt_int_t nxt_http_route_cookies(nxt_http_request_t *r, nxt_http_route_rule_t *rule); static nxt_array_t *nxt_http_route_cookies_parse(nxt_http_request_t *r); static nxt_int_t nxt_http_route_cookie_parse(nxt_array_t *cookies, u_char *start, u_char *end); static nxt_http_name_value_t *nxt_http_route_cookie(nxt_array_t *array, u_char *name, size_t name_length, u_char *start, u_char *end); static nxt_int_t nxt_http_route_test_cookie(nxt_http_request_t *r, nxt_http_route_rule_t *rule, nxt_array_t *array); static nxt_int_t nxt_http_route_test_rule(nxt_http_request_t *r, nxt_http_route_rule_t *rule, u_char *start, size_t length); static nxt_int_t nxt_http_route_pattern(nxt_http_request_t *r, nxt_http_route_pattern_t *pattern, u_char *start, size_t length); static nxt_int_t nxt_http_route_memcmp(u_char *start, u_char *test, size_t length, nxt_bool_t case_sensitive); nxt_http_routes_t * nxt_http_routes_create(nxt_task_t *task, nxt_router_temp_conf_t *tmcf, nxt_conf_value_t *routes_conf) { size_t size; uint32_t i, n, next; nxt_mp_t *mp; nxt_str_t name, *string; nxt_bool_t object; nxt_conf_value_t *route_conf; nxt_http_route_t *route; nxt_http_routes_t *routes; object = (nxt_conf_type(routes_conf) == NXT_CONF_OBJECT); n = object ? nxt_conf_object_members_count(routes_conf) : 1; size = sizeof(nxt_http_routes_t) + n * sizeof(nxt_http_route_t *); mp = tmcf->router_conf->mem_pool; routes = nxt_mp_alloc(mp, size); if (nxt_slow_path(routes == NULL)) { return NULL; } routes->items = n; if (object) { next = 0; for (i = 0; i < n; i++) { route_conf = nxt_conf_next_object_member(routes_conf, &name, &next); route = nxt_http_route_create(task, tmcf, route_conf); if (nxt_slow_path(route == NULL)) { return NULL; } routes->route[i] = route; string = nxt_str_dup(mp, &route->name, &name); if (nxt_slow_path(string == NULL)) { return NULL; } } } else { route = nxt_http_route_create(task, tmcf, routes_conf); if (nxt_slow_path(route == NULL)) { return NULL; } routes->route[0] = route; route->name.length = 0; route->name.start = NULL; } return routes; } static nxt_conf_map_t nxt_http_route_match_conf[] = { { nxt_string("scheme"), NXT_CONF_MAP_PTR, offsetof(nxt_http_route_match_conf_t, scheme) }, { nxt_string("host"), NXT_CONF_MAP_PTR, offsetof(nxt_http_route_match_conf_t, host), }, { nxt_string("uri"), NXT_CONF_MAP_PTR, offsetof(nxt_http_route_match_conf_t, uri), }, { nxt_string("method"), NXT_CONF_MAP_PTR, offsetof(nxt_http_route_match_conf_t, method), }, { nxt_string("headers"), NXT_CONF_MAP_PTR, offsetof(nxt_http_route_match_conf_t, headers), }, { nxt_string("arguments"), NXT_CONF_MAP_PTR, offsetof(nxt_http_route_match_conf_t, arguments), }, { nxt_string("cookies"), NXT_CONF_MAP_PTR, offsetof(nxt_http_route_match_conf_t, cookies), }, { nxt_string("source"), NXT_CONF_MAP_PTR, offsetof(nxt_http_route_match_conf_t, source), }, { nxt_string("destination"), NXT_CONF_MAP_PTR, offsetof(nxt_http_route_match_conf_t, destination), }, }; static nxt_http_route_t * nxt_http_route_create(nxt_task_t *task, nxt_router_temp_conf_t *tmcf, nxt_conf_value_t *cv) { size_t size; uint32_t i, n; nxt_conf_value_t *value; nxt_http_route_t *route; nxt_http_route_match_t *match, **m; n = nxt_conf_array_elements_count(cv); size = sizeof(nxt_http_route_t) + n * sizeof(nxt_http_route_match_t *); route = nxt_mp_alloc(tmcf->router_conf->mem_pool, size); if (nxt_slow_path(route == NULL)) { return NULL; } route->items = n; m = &route->match[0]; for (i = 0; i < n; i++) { value = nxt_conf_get_array_element(cv, i); match = nxt_http_route_match_create(task, tmcf, value); if (match == NULL) { return NULL; } *m++ = match; } return route; } static nxt_http_route_match_t * nxt_http_route_match_create(nxt_task_t *task, nxt_router_temp_conf_t *tmcf, nxt_conf_value_t *cv) { size_t size; uint32_t n; nxt_mp_t *mp; nxt_int_t ret; nxt_conf_value_t *match_conf, *action_conf; nxt_http_route_test_t *test; nxt_http_route_rule_t *rule; nxt_http_route_table_t *table; nxt_http_route_match_t *match; nxt_http_route_addr_rule_t *addr_rule; nxt_http_route_match_conf_t mtcf; static nxt_str_t match_path = nxt_string("/match"); static nxt_str_t action_path = nxt_string("/action"); match_conf = nxt_conf_get_path(cv, &match_path); n = (match_conf != NULL) ? nxt_conf_object_members_count(match_conf) : 0; size = sizeof(nxt_http_route_match_t) + n * sizeof(nxt_http_route_rule_t *); mp = tmcf->router_conf->mem_pool; match = nxt_mp_alloc(mp, size); if (nxt_slow_path(match == NULL)) { return NULL; } match->items = n; action_conf = nxt_conf_get_path(cv, &action_path); if (nxt_slow_path(action_conf == NULL)) { return NULL; } ret = nxt_http_route_action_create(tmcf, action_conf, &match->action); if (nxt_slow_path(ret != NXT_OK)) { return NULL; } if (n == 0) { return match; } nxt_memzero(&mtcf, sizeof(mtcf)); ret = nxt_conf_map_object(tmcf->mem_pool, match_conf, nxt_http_route_match_conf, nxt_nitems(nxt_http_route_match_conf), &mtcf); if (ret != NXT_OK) { return NULL; } test = &match->test[0]; if (mtcf.scheme != NULL) { rule = nxt_http_route_rule_create(task, mp, mtcf.scheme, 1, NXT_HTTP_ROUTE_PATTERN_NOCASE, NXT_HTTP_ROUTE_ENCODING_NONE); if (rule == NULL) { return NULL; } rule->object = NXT_HTTP_ROUTE_SCHEME; test->rule = rule; test++; } if (mtcf.host != NULL) { rule = nxt_http_route_rule_create(task, mp, mtcf.host, 1, NXT_HTTP_ROUTE_PATTERN_LOWCASE, NXT_HTTP_ROUTE_ENCODING_NONE); if (rule == NULL) { return NULL; } rule->u.offset = offsetof(nxt_http_request_t, host); rule->object = NXT_HTTP_ROUTE_STRING; test->rule = rule; test++; } if (mtcf.uri != NULL) { rule = nxt_http_route_rule_create(task, mp, mtcf.uri, 1, NXT_HTTP_ROUTE_PATTERN_NOCASE, NXT_HTTP_ROUTE_ENCODING_URI); if (rule == NULL) { return NULL; } rule->u.offset = offsetof(nxt_http_request_t, path); rule->object = NXT_HTTP_ROUTE_STRING_PTR; test->rule = rule; test++; } if (mtcf.method != NULL) { rule = nxt_http_route_rule_create(task, mp, mtcf.method, 1, NXT_HTTP_ROUTE_PATTERN_UPCASE, NXT_HTTP_ROUTE_ENCODING_NONE); if (rule == NULL) { return NULL; } rule->u.offset = offsetof(nxt_http_request_t, method); rule->object = NXT_HTTP_ROUTE_STRING_PTR; test->rule = rule; test++; } if (mtcf.headers != NULL) { table = nxt_http_route_table_create(task, mp, mtcf.headers, NXT_HTTP_ROUTE_HEADER, 0, NXT_HTTP_ROUTE_ENCODING_NONE); if (table == NULL) { return NULL; } test->table = table; test++; } if (mtcf.arguments != NULL) { table = nxt_http_route_table_create(task, mp, mtcf.arguments, NXT_HTTP_ROUTE_ARGUMENT, 1, NXT_HTTP_ROUTE_ENCODING_URI_PLUS); if (table == NULL) { return NULL; } test->table = table; test++; } if (mtcf.cookies != NULL) { table = nxt_http_route_table_create(task, mp, mtcf.cookies, NXT_HTTP_ROUTE_COOKIE, 1, NXT_HTTP_ROUTE_ENCODING_NONE); if (table == NULL) { return NULL; } test->table = table; test++; } if (mtcf.source != NULL) { addr_rule = nxt_http_route_addr_rule_create(task, mp, mtcf.source); if (addr_rule == NULL) { return NULL; } addr_rule->object = NXT_HTTP_ROUTE_SOURCE; test->addr_rule = addr_rule; test++; } if (mtcf.destination != NULL) { addr_rule = nxt_http_route_addr_rule_create(task, mp, mtcf.destination); if (addr_rule == NULL) { return NULL; } addr_rule->object = NXT_HTTP_ROUTE_DESTINATION; test->addr_rule = addr_rule; test++; } return match; } static nxt_conf_map_t nxt_http_route_action_conf[] = { { nxt_string("pass"), NXT_CONF_MAP_PTR, offsetof(nxt_http_route_action_conf_t, pass) }, { nxt_string("return"), NXT_CONF_MAP_PTR, offsetof(nxt_http_route_action_conf_t, ret) }, { nxt_string("location"), NXT_CONF_MAP_STR, offsetof(nxt_http_route_action_conf_t, location) }, { nxt_string("share"), NXT_CONF_MAP_PTR, offsetof(nxt_http_route_action_conf_t, share) }, { nxt_string("proxy"), NXT_CONF_MAP_PTR, offsetof(nxt_http_route_action_conf_t, proxy) }, { nxt_string("fallback"), NXT_CONF_MAP_PTR, offsetof(nxt_http_route_action_conf_t, fallback) }, }; static nxt_int_t nxt_http_route_action_create(nxt_router_temp_conf_t *tmcf, nxt_conf_value_t *cv, nxt_http_action_t *action) { nxt_mp_t *mp; nxt_int_t ret; nxt_str_t name, *string; nxt_uint_t encode; nxt_conf_value_t *conf; nxt_http_route_action_conf_t accf; nxt_memzero(&accf, sizeof(accf)); ret = nxt_conf_map_object(tmcf->mem_pool, cv, nxt_http_route_action_conf, nxt_nitems(nxt_http_route_action_conf), &accf); if (ret != NXT_OK) { return ret; } nxt_memzero(action, sizeof(nxt_http_action_t)); mp = tmcf->router_conf->mem_pool; if (accf.ret != NULL) { action->handler = nxt_http_return_handler; action->u.return_code = nxt_conf_get_number(accf.ret); if (accf.location.length > 0) { if (nxt_is_complex_uri_encoded(accf.location.start, accf.location.length)) { string = nxt_str_dup(mp, &action->name, &accf.location); if (nxt_slow_path(string == NULL)) { return NXT_ERROR; } } else { string = &action->name; encode = nxt_encode_complex_uri(NULL, accf.location.start, accf.location.length); string->length = accf.location.length + encode * 2; string->start = nxt_mp_nget(mp, string->length); if (nxt_slow_path(string->start == NULL)) { return NXT_ERROR; } nxt_encode_complex_uri(string->start, accf.location.start, accf.location.length); } } return NXT_OK; } conf = accf.pass; if (accf.share != NULL) { conf = accf.share; action->handler = nxt_http_static_handler; } else if (accf.proxy != NULL) { conf = accf.proxy; } nxt_conf_get_string(conf, &name); string = nxt_str_dup(mp, &action->name, &name); if (nxt_slow_path(string == NULL)) { return NXT_ERROR; } if (accf.fallback != NULL) { action->u.fallback = nxt_mp_alloc(mp, sizeof(nxt_http_action_t)); if (nxt_slow_path(action->u.fallback == NULL)) { return NXT_ERROR; } return nxt_http_route_action_create(tmcf, accf.fallback, action->u.fallback); } if (accf.proxy != NULL) { return nxt_http_proxy_create(mp, action); } return NXT_OK; } static nxt_http_route_table_t * nxt_http_route_table_create(nxt_task_t *task, nxt_mp_t *mp, nxt_conf_value_t *table_cv, nxt_http_route_object_t object, nxt_bool_t case_sensitive, nxt_http_route_encoding_t encoding) { size_t size; uint32_t i, n; nxt_bool_t array; nxt_conf_value_t *ruleset_cv; nxt_http_route_table_t *table; nxt_http_route_ruleset_t *ruleset; array = (nxt_conf_type(table_cv) == NXT_CONF_ARRAY); n = array ? nxt_conf_array_elements_count(table_cv) : 1; size = sizeof(nxt_http_route_table_t) + n * sizeof(nxt_http_route_ruleset_t *); table = nxt_mp_alloc(mp, size); if (nxt_slow_path(table == NULL)) { return NULL; } table->items = n; table->object = NXT_HTTP_ROUTE_TABLE; if (!array) { ruleset = nxt_http_route_ruleset_create(task, mp, table_cv, object, case_sensitive, encoding); if (nxt_slow_path(ruleset == NULL)) { return NULL; } table->ruleset[0] = ruleset; return table; } for (i = 0; i < n; i++) { ruleset_cv = nxt_conf_get_array_element(table_cv, i); ruleset = nxt_http_route_ruleset_create(task, mp, ruleset_cv, object, case_sensitive, encoding); if (nxt_slow_path(ruleset == NULL)) { return NULL; } table->ruleset[i] = ruleset; } return table; } static nxt_http_route_ruleset_t * nxt_http_route_ruleset_create(nxt_task_t *task, nxt_mp_t *mp, nxt_conf_value_t *ruleset_cv, nxt_http_route_object_t object, nxt_bool_t case_sensitive, nxt_http_route_encoding_t encoding) { size_t size; uint32_t i, n, next; nxt_str_t name; nxt_conf_value_t *rule_cv; nxt_http_route_rule_t *rule; nxt_http_route_ruleset_t *ruleset; n = nxt_conf_object_members_count(ruleset_cv); size = sizeof(nxt_http_route_ruleset_t) + n * sizeof(nxt_http_route_rule_t *); ruleset = nxt_mp_alloc(mp, size); if (nxt_slow_path(ruleset == NULL)) { return NULL; } ruleset->items = n; next = 0; for (i = 0; i < n; i++) { rule_cv = nxt_conf_next_object_member(ruleset_cv, &name, &next); rule = nxt_http_route_rule_name_create(task, mp, rule_cv, &name, case_sensitive, encoding); if (nxt_slow_path(rule == NULL)) { return NULL; } rule->object = object; ruleset->rule[i] = rule; } return ruleset; } static nxt_http_route_rule_t * nxt_http_route_rule_name_create(nxt_task_t *task, nxt_mp_t *mp, nxt_conf_value_t *rule_cv, nxt_str_t *name, nxt_bool_t case_sensitive, nxt_http_route_encoding_t encoding) { u_char c, *p, *src, *start, *end, plus; uint8_t d0, d1; uint32_t hash; nxt_uint_t i; nxt_http_route_rule_t *rule; rule = nxt_http_route_rule_create(task, mp, rule_cv, case_sensitive, NXT_HTTP_ROUTE_PATTERN_NOCASE, encoding); if (nxt_slow_path(rule == NULL)) { return NULL; } rule->u.name.length = name->length; p = nxt_mp_nget(mp, name->length); if (nxt_slow_path(p == NULL)) { return NULL; } hash = NXT_HTTP_FIELD_HASH_INIT; rule->u.name.start = p; if (encoding == NXT_HTTP_ROUTE_ENCODING_NONE) { for (i = 0; i < name->length; i++) { c = name->start[i]; *p++ = c; c = case_sensitive ? c : nxt_lowcase(c); hash = nxt_http_field_hash_char(hash, c); } goto end; } plus = (encoding == NXT_HTTP_ROUTE_ENCODING_URI_PLUS) ? ' ' : '+'; start = name->start; end = start + name->length; for (src = start; src < end; src++) { c = *src; switch (c) { case '%': if (nxt_slow_path(end - src <= 2)) { return NULL; } d0 = nxt_hex2int[src[1]]; d1 = nxt_hex2int[src[2]]; src += 2; if (nxt_slow_path((d0 | d1) >= 16)) { return NULL; } c = (d0 << 4) + d1; *p++ = c; break; case '+': c = plus; *p++ = c; break; default: *p++ = c; break; } c = case_sensitive ? c : nxt_lowcase(c); hash = nxt_http_field_hash_char(hash, c); } rule->u.name.length = p - rule->u.name.start; end: rule->u.name.hash = nxt_http_field_hash_end(hash) & 0xFFFF; return rule; } static nxt_http_route_rule_t * nxt_http_route_rule_create(nxt_task_t *task, nxt_mp_t *mp, nxt_conf_value_t *cv, nxt_bool_t case_sensitive, nxt_http_route_pattern_case_t pattern_case, nxt_http_route_encoding_t encoding) { size_t size; uint32_t i, n; nxt_int_t ret; nxt_bool_t string; nxt_conf_value_t *value; nxt_http_route_rule_t *rule; nxt_http_route_pattern_t *pattern; string = (nxt_conf_type(cv) != NXT_CONF_ARRAY); n = string ? 1 : nxt_conf_array_elements_count(cv); size = sizeof(nxt_http_route_rule_t) + n * sizeof(nxt_http_route_pattern_t); rule = nxt_mp_alloc(mp, size); if (nxt_slow_path(rule == NULL)) { return NULL; } rule->items = n; pattern = &rule->pattern[0]; if (string) { pattern[0].case_sensitive = case_sensitive; ret = nxt_http_route_pattern_create(task, mp, cv, &pattern[0], pattern_case, encoding); if (nxt_slow_path(ret != NXT_OK)) { return NULL; } return rule; } nxt_conf_array_qsort(cv, nxt_http_pattern_compare); for (i = 0; i < n; i++) { pattern[i].case_sensitive = case_sensitive; value = nxt_conf_get_array_element(cv, i); ret = nxt_http_route_pattern_create(task, mp, value, &pattern[i], pattern_case, encoding); if (nxt_slow_path(ret != NXT_OK)) { return NULL; } } return rule; } static nxt_http_route_addr_rule_t * nxt_http_route_addr_rule_create(nxt_task_t *task, nxt_mp_t *mp, nxt_conf_value_t *cv) { size_t size; uint32_t i, n; nxt_bool_t array; nxt_conf_value_t *value; nxt_http_route_addr_rule_t *addr_rule; nxt_http_route_addr_pattern_t *pattern; array = (nxt_conf_type(cv) == NXT_CONF_ARRAY); n = array ? nxt_conf_array_elements_count(cv) : 1; size = sizeof(nxt_http_route_addr_rule_t) + n * sizeof(nxt_http_route_addr_pattern_t); addr_rule = nxt_mp_alloc(mp, size); if (nxt_slow_path(addr_rule == NULL)) { return NULL; } addr_rule->items = n; if (!array) { pattern = &addr_rule->addr_pattern[0]; if (nxt_http_route_addr_pattern_parse(mp, pattern, cv) != NXT_OK) { return NULL; } return addr_rule; } for (i = 0; i < n; i++) { pattern = &addr_rule->addr_pattern[i]; value = nxt_conf_get_array_element(cv, i); if (nxt_http_route_addr_pattern_parse(mp, pattern, value) != NXT_OK) { return NULL; } } if (n > 1) { nxt_qsort(addr_rule->addr_pattern, addr_rule->items, sizeof(nxt_http_route_addr_pattern_t), nxt_http_addr_pattern_compare); } return addr_rule; } static int nxt_http_pattern_compare(const void *one, const void *two) { nxt_str_t test; nxt_bool_t negative1, negative2; nxt_conf_value_t *value; value = (nxt_conf_value_t *) one; nxt_conf_get_string(value, &test); negative1 = (test.length != 0 && test.start[0] == '!'); value = (nxt_conf_value_t *) two; nxt_conf_get_string(value, &test); negative2 = (test.length != 0 && test.start[0] == '!'); return (negative2 - negative1); } static int nxt_http_addr_pattern_compare(const void *one, const void *two) { const nxt_http_route_addr_pattern_t *p1, *p2; p1 = one; p2 = two; return (p2->base.negative - p1->base.negative); } static nxt_int_t nxt_http_route_pattern_create(nxt_task_t *task, nxt_mp_t *mp, nxt_conf_value_t *cv, nxt_http_route_pattern_t *pattern, nxt_http_route_pattern_case_t pattern_case, nxt_http_route_encoding_t encoding) { u_char c, *p, *end; nxt_str_t test, tmp; nxt_int_t ret; nxt_array_t *slices; nxt_http_route_pattern_type_t type; nxt_http_route_pattern_slice_t *slice; type = NXT_HTTP_ROUTE_PATTERN_EXACT; nxt_conf_get_string(cv, &test); slices = nxt_array_create(mp, 1, sizeof(nxt_http_route_pattern_slice_t)); if (nxt_slow_path(slices == NULL)) { return NXT_ERROR; } pattern->pattern_slices = slices; pattern->negative = 0; pattern->any = 1; pattern->min_length = 0; if (test.length != 0 && test.start[0] == '!') { test.start++; test.length--; pattern->negative = 1; pattern->any = 0; } if (test.length == 0) { slice = nxt_array_add(slices); if (nxt_slow_path(slice == NULL)) { return NXT_ERROR; } slice->type = NXT_HTTP_ROUTE_PATTERN_EXACT; slice->start = NULL; slice->length = 0; return NXT_OK; } if (test.start[0] == '*') { /* 'type' is no longer 'EXACT', assume 'END'. */ type = NXT_HTTP_ROUTE_PATTERN_END; test.start++; test.length--; } if (type == NXT_HTTP_ROUTE_PATTERN_EXACT) { tmp.start = test.start; p = nxt_memchr(test.start, '*', test.length); if (p == NULL) { /* No '*' found - EXACT pattern. */ tmp.length = test.length; type = NXT_HTTP_ROUTE_PATTERN_EXACT; test.start += test.length; test.length = 0; } else { /* '*' found - BEGIN pattern. */ tmp.length = p - test.start; type = NXT_HTTP_ROUTE_PATTERN_BEGIN; test.start = p + 1; test.length -= tmp.length + 1; } ret = nxt_http_route_pattern_slice(slices, &tmp, type, encoding, pattern_case); if (nxt_slow_path(ret != NXT_OK)) { return ret; } pattern->min_length += tmp.length; } end = test.start + test.length; if (test.length != 0 && end[-1] != '*') { p = end - 1; while (p != test.start) { c = *p--; if (c == '*') { p += 2; break; } } tmp.start = p; tmp.length = end - p; test.length -= tmp.length; end = p; ret = nxt_http_route_pattern_slice(slices, &tmp, NXT_HTTP_ROUTE_PATTERN_END, encoding, pattern_case); if (nxt_slow_path(ret != NXT_OK)) { return ret; } pattern->min_length += tmp.length; } tmp.start = test.start; tmp.length = 0; p = tmp.start; while (p != end) { c = *p++; if (c != '*') { tmp.length++; continue; } if (tmp.length == 0) { tmp.start = p; continue; } ret = nxt_http_route_pattern_slice(slices, &tmp, NXT_HTTP_ROUTE_PATTERN_SUBSTRING, encoding, pattern_case); if (nxt_slow_path(ret != NXT_OK)) { return ret; } pattern->min_length += tmp.length; tmp.start = p; tmp.length = 0; } if (tmp.length != 0) { ret = nxt_http_route_pattern_slice(slices, &tmp, NXT_HTTP_ROUTE_PATTERN_SUBSTRING, encoding, pattern_case); if (nxt_slow_path(ret != NXT_OK)) { return ret; } pattern->min_length += tmp.length; } return NXT_OK; } static nxt_int_t nxt_http_route_decode_str(nxt_str_t *str, nxt_http_route_encoding_t encoding) { u_char *start, *end; switch (encoding) { case NXT_HTTP_ROUTE_ENCODING_NONE: break; case NXT_HTTP_ROUTE_ENCODING_URI: start = str->start; end = nxt_decode_uri(start, start, str->length); if (nxt_slow_path(end == NULL)) { return NXT_ERROR; } str->length = end - start; break; case NXT_HTTP_ROUTE_ENCODING_URI_PLUS: start = str->start; end = nxt_decode_uri_plus(start, start, str->length); if (nxt_slow_path(end == NULL)) { return NXT_ERROR; } str->length = end - start; break; default: nxt_unreachable(); } return NXT_OK; } static nxt_int_t nxt_http_route_pattern_slice(nxt_array_t *slices, nxt_str_t *test, nxt_http_route_pattern_type_t type, nxt_http_route_encoding_t encoding, nxt_http_route_pattern_case_t pattern_case) { u_char *start; nxt_int_t ret; nxt_http_route_pattern_slice_t *slice; ret = nxt_http_route_decode_str(test, encoding); if (nxt_slow_path(ret != NXT_OK)) { return ret; } start = nxt_mp_nget(slices->mem_pool, test->length); if (nxt_slow_path(start == NULL)) { return NXT_ERROR; } switch (pattern_case) { case NXT_HTTP_ROUTE_PATTERN_UPCASE: nxt_memcpy_upcase(start, test->start, test->length); break; case NXT_HTTP_ROUTE_PATTERN_LOWCASE: nxt_memcpy_lowcase(start, test->start, test->length); break; case NXT_HTTP_ROUTE_PATTERN_NOCASE: nxt_memcpy(start, test->start, test->length); break; } slice = nxt_array_add(slices); if (nxt_slow_path(slice == NULL)) { return NXT_ERROR; } slice->type = type; slice->start = start; slice->length = test->length; return NXT_OK; } nxt_int_t nxt_http_routes_resolve(nxt_task_t *task, nxt_router_temp_conf_t *tmcf) { nxt_int_t ret; nxt_http_route_t **route, **end; nxt_http_routes_t *routes; routes = tmcf->router_conf->routes; if (routes != NULL) { route = &routes->route[0]; end = route + routes->items; while (route < end) { ret = nxt_http_route_resolve(task, tmcf, *route); if (nxt_slow_path(ret != NXT_OK)) { return NXT_ERROR; } route++; } } return NXT_OK; } static nxt_int_t nxt_http_route_resolve(nxt_task_t *task, nxt_router_temp_conf_t *tmcf, nxt_http_route_t *route) { nxt_int_t ret; nxt_http_route_match_t **match, **end; match = &route->match[0]; end = match + route->items; while (match < end) { ret = nxt_http_action_resolve(task, tmcf, &(*match)->action); if (nxt_slow_path(ret != NXT_OK)) { return NXT_ERROR; } match++; } return NXT_OK; } static nxt_int_t nxt_http_action_resolve(nxt_task_t *task, nxt_router_temp_conf_t *tmcf, nxt_http_action_t *action) { nxt_var_t *var; nxt_int_t ret; if (action->handler != NULL) { if (action->handler == nxt_http_static_handler && action->u.fallback != NULL) { return nxt_http_action_resolve(task, tmcf, action->u.fallback); } return NXT_OK; } if (nxt_is_var(&action->name)) { var = nxt_var_compile(&action->name, tmcf->router_conf->mem_pool); if (nxt_slow_path(var == NULL)) { return NXT_ERROR; } action->u.var = var; action->handler = nxt_http_action_pass_var; return NXT_OK; } ret = nxt_http_pass_find(task, tmcf->mem_pool, tmcf->router_conf, action); if (nxt_slow_path(ret != NXT_OK)) { return NXT_ERROR; } return NXT_OK; } static nxt_http_action_t * nxt_http_action_pass_var(nxt_task_t *task, nxt_http_request_t *r, nxt_http_action_t *action) { nxt_var_t *var; nxt_int_t ret; ret = nxt_var_query_init(&r->var_query, r, r->mem_pool); if (nxt_slow_path(ret != NXT_OK)) { goto fail; } var = action->u.var; action = nxt_mp_get(r->mem_pool, sizeof(nxt_http_action_t)); if (nxt_slow_path(action == NULL)) { goto fail; } nxt_var_query(task, r->var_query, var, &action->name); nxt_var_query_resolve(task, r->var_query, action, nxt_http_action_pass_var_ready, nxt_http_action_pass_var_error); return NULL; fail: nxt_http_request_error(task, r, NXT_HTTP_INTERNAL_SERVER_ERROR); return NULL; } static void nxt_http_action_pass_var_ready(nxt_task_t *task, void *obj, void *data) { nxt_int_t ret; nxt_router_conf_t *rtcf; nxt_http_action_t *action; nxt_http_status_t status; nxt_http_request_t *r; r = obj; action = data; rtcf = r->conf->socket_conf->router_conf; nxt_debug(task, "http pass lookup: %V", &action->name); ret = nxt_http_pass_find(task, r->mem_pool, rtcf, action); if (ret != NXT_OK) { status = (ret == NXT_DECLINED) ? NXT_HTTP_NOT_FOUND : NXT_HTTP_INTERNAL_SERVER_ERROR; nxt_http_request_error(task, r, status); return; } nxt_http_request_action(task, r, action); } static void nxt_http_action_pass_var_error(nxt_task_t *task, void *obj, void *data) { nxt_http_request_t *r; r = obj; nxt_http_request_error(task, r, NXT_HTTP_INTERNAL_SERVER_ERROR); } static nxt_int_t nxt_http_pass_find(nxt_task_t *task, nxt_mp_t *mp, nxt_router_conf_t *rtcf, nxt_http_action_t *action) { nxt_str_t *targets; nxt_int_t ret; nxt_uint_t i; nxt_str_t segments[3]; ret = nxt_http_pass_segments(mp, &action->name, segments, 3); if (nxt_slow_path(ret != NXT_OK)) { return ret; } if (nxt_str_eq(&segments[0], "applications", 12)) { ret = nxt_router_listener_application(rtcf, &segments[1], action); if (ret != NXT_OK) { return ret; } if (segments[2].length != 0) { targets = action->u.application->targets; for (i = 0; !nxt_strstr_eq(&segments[2], &targets[i]); i++); action->target = i; } else { action->target = 0; } return NXT_OK; } if (segments[2].length == 0) { if (nxt_str_eq(&segments[0], "upstreams", 9)) { return nxt_upstream_find(rtcf->upstreams, &segments[1], action); } if (nxt_str_eq(&segments[0], "routes", 6)) { return nxt_http_route_find(rtcf->routes, &segments[1], action); } } return NXT_DECLINED; } nxt_int_t nxt_http_pass_segments(nxt_mp_t *mp, nxt_str_t *pass, nxt_str_t *segments, nxt_uint_t n) { u_char *p; nxt_str_t rest; if (nxt_slow_path(nxt_str_dup(mp, &rest, pass) == NULL)) { return NXT_ERROR; } nxt_memzero(segments, n * sizeof(nxt_str_t)); do { p = nxt_memchr(rest.start, '/', rest.length); if (p != NULL) { n--; if (n == 0) { return NXT_DECLINED; } segments->length = p - rest.start; segments->start = rest.start; rest.length -= segments->length + 1; rest.start = p + 1; } else { n = 0; *segments = rest; } if (segments->length == 0) { return NXT_DECLINED; } p = nxt_decode_uri(segments->start, segments->start, segments->length); if (p == NULL) { return NXT_DECLINED; } segments->length = p - segments->start; segments++; } while (n); return NXT_OK; } static nxt_int_t nxt_http_route_find(nxt_http_routes_t *routes, nxt_str_t *name, nxt_http_action_t *action) { nxt_http_route_t **route, **end; route = &routes->route[0]; end = route + routes->items; while (route < end) { if (nxt_strstr_eq(&(*route)->name, name)) { action->u.route = *route; action->handler = nxt_http_route_handler; return NXT_OK; } route++; } return NXT_DECLINED; } nxt_http_action_t * nxt_http_action_create(nxt_task_t *task, nxt_router_temp_conf_t *tmcf, nxt_str_t *name) { nxt_int_t ret; nxt_http_action_t *action; action = nxt_mp_alloc(tmcf->router_conf->mem_pool, sizeof(nxt_http_action_t)); if (nxt_slow_path(action == NULL)) { return NULL; } action->name = *name; action->handler = NULL; ret = nxt_http_action_resolve(task, tmcf, action); if (nxt_slow_path(ret != NXT_OK)) { return NULL; } return action; } /* COMPATIBILITY: listener application. */ nxt_http_action_t * nxt_http_pass_application(nxt_task_t *task, nxt_router_conf_t *rtcf, nxt_str_t *name) { nxt_http_action_t *action; action = nxt_mp_alloc(rtcf->mem_pool, sizeof(nxt_http_action_t)); if (nxt_slow_path(action == NULL)) { return NULL; } action->name = *name; (void) nxt_router_listener_application(rtcf, name, action); action->target = 0; return action; } static nxt_http_action_t * nxt_http_route_handler(nxt_task_t *task, nxt_http_request_t *r, nxt_http_action_t *start) { nxt_http_route_t *route; nxt_http_action_t *action; nxt_http_route_match_t **match, **end; route = start->u.route; match = &route->match[0]; end = match + route->items; while (match < end) { action = nxt_http_route_match(task, r, *match); if (action != NULL) { return action; } match++; } nxt_http_request_error(task, r, NXT_HTTP_NOT_FOUND); return NULL; } static nxt_http_action_t * nxt_http_route_match(nxt_task_t *task, nxt_http_request_t *r, nxt_http_route_match_t *match) { nxt_int_t ret; nxt_http_route_test_t *test, *end; test = &match->test[0]; end = test + match->items; while (test < end) { switch (test->rule->object) { case NXT_HTTP_ROUTE_TABLE: ret = nxt_http_route_table(r, test->table); break; case NXT_HTTP_ROUTE_SOURCE: ret = nxt_http_route_addr_rule(r, test->addr_rule, r->remote); break; case NXT_HTTP_ROUTE_DESTINATION: if (r->local == NULL && nxt_fast_path(r->proto.any != NULL)) { nxt_http_proto[r->protocol].local_addr(task, r); } ret = nxt_http_route_addr_rule(r, test->addr_rule, r->local); break; default: ret = nxt_http_route_rule(r, test->rule); break; } if (ret <= 0) { /* 0 => NULL, -1 => NXT_HTTP_ACTION_ERROR. */ return (nxt_http_action_t *) (intptr_t) ret; } test++; } return &match->action; } static nxt_int_t nxt_http_route_table(nxt_http_request_t *r, nxt_http_route_table_t *table) { nxt_int_t ret; nxt_http_route_ruleset_t **ruleset, **end; ret = 1; ruleset = &table->ruleset[0]; end = ruleset + table->items; while (ruleset < end) { ret = nxt_http_route_ruleset(r, *ruleset); if (ret != 0) { return ret; } ruleset++; } return ret; } static nxt_int_t nxt_http_route_ruleset(nxt_http_request_t *r, nxt_http_route_ruleset_t *ruleset) { nxt_int_t ret; nxt_http_route_rule_t **rule, **end; rule = &ruleset->rule[0]; end = rule + ruleset->items; while (rule < end) { ret = nxt_http_route_rule(r, *rule); if (ret <= 0) { return ret; } rule++; } return 1; } static nxt_int_t nxt_http_route_rule(nxt_http_request_t *r, nxt_http_route_rule_t *rule) { void *p, **pp; u_char *start; size_t length; nxt_str_t *s; switch (rule->object) { case NXT_HTTP_ROUTE_HEADER: return nxt_http_route_header(r, rule); case NXT_HTTP_ROUTE_ARGUMENT: return nxt_http_route_arguments(r, rule); case NXT_HTTP_ROUTE_COOKIE: return nxt_http_route_cookies(r, rule); case NXT_HTTP_ROUTE_SCHEME: return nxt_http_route_scheme(r, rule); default: break; } p = nxt_pointer_to(r, rule->u.offset); if (rule->object == NXT_HTTP_ROUTE_STRING) { s = p; } else { /* NXT_HTTP_ROUTE_STRING_PTR */ pp = p; s = *pp; if (s == NULL) { return 0; } } length = s->length; start = s->start; return nxt_http_route_test_rule(r, rule, start, length); } static nxt_int_t nxt_http_route_addr_pattern_match(nxt_http_route_addr_pattern_t *p, nxt_sockaddr_t *sa) { #if (NXT_INET6) uint32_t i; #endif in_port_t in_port; nxt_int_t match; struct sockaddr_in *sin; #if (NXT_INET6) struct sockaddr_in6 *sin6; #endif nxt_http_route_addr_base_t *base; base = &p->base; switch (sa->u.sockaddr.sa_family) { case AF_INET: match = (base->addr_family == AF_INET || base->addr_family == AF_UNSPEC); if (!match) { break; } sin = &sa->u.sockaddr_in; in_port = ntohs(sin->sin_port); match = (in_port >= base->port.start && in_port <= base->port.end); if (!match) { break; } switch (base->match_type) { case NXT_HTTP_ROUTE_ADDR_ANY: break; case NXT_HTTP_ROUTE_ADDR_EXACT: match = (nxt_memcmp(&sin->sin_addr, &p->addr.v4.start, sizeof(struct in_addr)) == 0); break; case NXT_HTTP_ROUTE_ADDR_RANGE: match = (nxt_memcmp(&sin->sin_addr, &p->addr.v4.start, sizeof(struct in_addr)) >= 0 && nxt_memcmp(&sin->sin_addr, &p->addr.v4.end, sizeof(struct in_addr)) <= 0); break; case NXT_HTTP_ROUTE_ADDR_CIDR: match = ((sin->sin_addr.s_addr & p->addr.v4.end) == p->addr.v4.start); break; default: nxt_unreachable(); } break; #if (NXT_INET6) case AF_INET6: match = (base->addr_family == AF_INET6 || base->addr_family == AF_UNSPEC); if (!match) { break; } sin6 = &sa->u.sockaddr_in6; in_port = ntohs(sin6->sin6_port); match = (in_port >= base->port.start && in_port <= base->port.end); if (!match) { break; } switch (base->match_type) { case NXT_HTTP_ROUTE_ADDR_ANY: break; case NXT_HTTP_ROUTE_ADDR_EXACT: match = (nxt_memcmp(&sin6->sin6_addr, &p->addr.v6.start, sizeof(struct in6_addr)) == 0); break; case NXT_HTTP_ROUTE_ADDR_RANGE: match = (nxt_memcmp(&sin6->sin6_addr, &p->addr.v6.start, sizeof(struct in6_addr)) >= 0 && nxt_memcmp(&sin6->sin6_addr, &p->addr.v6.end, sizeof(struct in6_addr)) <= 0); break; case NXT_HTTP_ROUTE_ADDR_CIDR: for (i = 0; i < 16; i++) { match = ((sin6->sin6_addr.s6_addr[i] & p->addr.v6.end.s6_addr[i]) == p->addr.v6.start.s6_addr[i]); if (!match) { break; } } break; default: nxt_unreachable(); } break; #endif default: match = 0; break; } return match ^ base->negative; } static nxt_int_t nxt_http_route_addr_rule(nxt_http_request_t *r, nxt_http_route_addr_rule_t *addr_rule, nxt_sockaddr_t *sa) { uint32_t n; nxt_bool_t matches; nxt_http_route_addr_pattern_t *p; n = addr_rule->items; p = &addr_rule->addr_pattern[0] - 1; do { p++; n--; matches = nxt_http_route_addr_pattern_match(p, sa); if (p->base.negative) { if (matches) { continue; } return 0; } if (matches) { return 1; } } while (n > 0); return p->base.negative; } static nxt_int_t nxt_http_route_header(nxt_http_request_t *r, nxt_http_route_rule_t *rule) { nxt_int_t ret; nxt_http_field_t *f; ret = 0; nxt_list_each(f, r->fields) { if (rule->u.name.hash != f->hash || rule->u.name.length != f->name_length || nxt_strncasecmp(rule->u.name.start, f->name, f->name_length) != 0) { continue; } ret = nxt_http_route_test_rule(r, rule, f->value, f->value_length); if (ret == 0) { return ret; } } nxt_list_loop; return ret; } static nxt_int_t nxt_http_route_arguments(nxt_http_request_t *r, nxt_http_route_rule_t *rule) { nxt_array_t *arguments; if (r->args == NULL) { return 0; } arguments = nxt_http_route_arguments_parse(r); if (nxt_slow_path(arguments == NULL)) { return -1; } return nxt_http_route_test_argument(r, rule, arguments); } static nxt_array_t * nxt_http_route_arguments_parse(nxt_http_request_t *r) { size_t name_length; u_char c, *p, *dst, *dst_start, *start, *end, *name; uint8_t d0, d1; uint32_t hash; nxt_bool_t valid; nxt_array_t *args; nxt_http_name_value_t *nv; if (r->arguments != NULL) { return r->arguments; } args = nxt_array_create(r->mem_pool, 2, sizeof(nxt_http_name_value_t)); if (nxt_slow_path(args == NULL)) { return NULL; } hash = NXT_HTTP_FIELD_HASH_INIT; valid = 1; name = NULL; name_length = 0; dst_start = nxt_mp_nget(r->mem_pool, r->args->length); if (nxt_slow_path(dst_start == NULL)) { return NULL; } start = r->args->start; end = start + r->args->length; for (p = start, dst = dst_start; p < end; p++, dst++) { c = *p; *dst = c; switch (c) { case '=': if (name != NULL) { break; } name_length = dst - dst_start; valid = (name_length != 0); name = dst_start; dst_start = dst + 1; continue; case '&': if (valid) { nv = nxt_http_route_argument(args, name, name_length, hash, dst_start, dst); if (nxt_slow_path(nv == NULL)) { return NULL; } } hash = NXT_HTTP_FIELD_HASH_INIT; name_length = 0; valid = 1; name = NULL; dst_start = dst + 1; continue; case '+': c = ' '; *dst = ' '; break; case '%': if (nxt_slow_path(end - p <= 2)) { break; } d0 = nxt_hex2int[p[1]]; d1 = nxt_hex2int[p[2]]; if (nxt_slow_path((d0 | d1) >= 16)) { break; } p += 2; c = (d0 << 4) + d1; *dst = c; break; } if (name == NULL) { hash = nxt_http_field_hash_char(hash, c); } } if (valid) { nv = nxt_http_route_argument(args, name, name_length, hash, dst_start, dst); if (nxt_slow_path(nv == NULL)) { return NULL; } } r->arguments = args; return args; } static nxt_http_name_value_t * nxt_http_route_argument(nxt_array_t *array, u_char *name, size_t name_length, uint32_t hash, u_char *start, u_char *end) { size_t length; nxt_http_name_value_t *nv; nv = nxt_array_add(array); if (nxt_slow_path(nv == NULL)) { return NULL; } nv->hash = nxt_http_field_hash_end(hash) & 0xFFFF; length = end - start; if (name == NULL) { name_length = length; name = start; length = 0; } nv->name_length = name_length; nv->value_length = length; nv->name = name; nv->value = start; return nv; } static nxt_int_t nxt_http_route_test_argument(nxt_http_request_t *r, nxt_http_route_rule_t *rule, nxt_array_t *array) { nxt_bool_t ret; nxt_http_name_value_t *nv, *end; ret = 0; nv = array->elts; end = nv + array->nelts; while (nv < end) { if (rule->u.name.hash == nv->hash && rule->u.name.length == nv->name_length && nxt_memcmp(rule->u.name.start, nv->name, nv->name_length) == 0) { ret = nxt_http_route_test_rule(r, rule, nv->value, nv->value_length); if (ret == 0) { break; } } nv++; } return ret; } static nxt_int_t nxt_http_route_scheme(nxt_http_request_t *r, nxt_http_route_rule_t *rule) { nxt_bool_t tls, https; nxt_http_route_pattern_slice_t *pattern_slice; pattern_slice = rule->pattern[0].pattern_slices->elts; https = (pattern_slice->length == nxt_length("https")); tls = (r->tls != NULL); return (tls == https); } static nxt_int_t nxt_http_route_cookies(nxt_http_request_t *r, nxt_http_route_rule_t *rule) { nxt_array_t *cookies; cookies = nxt_http_route_cookies_parse(r); if (nxt_slow_path(cookies == NULL)) { return -1; } return nxt_http_route_test_cookie(r, rule, cookies); } static nxt_array_t * nxt_http_route_cookies_parse(nxt_http_request_t *r) { nxt_int_t ret; nxt_array_t *cookies; nxt_http_field_t *f; if (r->cookies != NULL) { return r->cookies; } cookies = nxt_array_create(r->mem_pool, 2, sizeof(nxt_http_name_value_t)); if (nxt_slow_path(cookies == NULL)) { return NULL; } nxt_list_each(f, r->fields) { if (f->hash != NXT_COOKIE_HASH || f->name_length != 6 || nxt_strncasecmp(f->name, (u_char *) "Cookie", 6) != 0) { continue; } ret = nxt_http_route_cookie_parse(cookies, f->value, f->value + f->value_length); if (ret != NXT_OK) { return NULL; } } nxt_list_loop; r->cookies = cookies; return cookies; } static nxt_int_t nxt_http_route_cookie_parse(nxt_array_t *cookies, u_char *start, u_char *end) { size_t name_length; u_char c, *p, *name; nxt_http_name_value_t *nv; name = NULL; name_length = 0; for (p = start; p < end; p++) { c = *p; if (c == '=') { while (start[0] == ' ') { start++; } name_length = p - start; if (name_length != 0) { name = start; } start = p + 1; } else if (c == ';') { if (name != NULL) { nv = nxt_http_route_cookie(cookies, name, name_length, start, p); if (nxt_slow_path(nv == NULL)) { return NXT_ERROR; } } name = NULL; start = p + 1; } } if (name != NULL) { nv = nxt_http_route_cookie(cookies, name, name_length, start, p); if (nxt_slow_path(nv == NULL)) { return NXT_ERROR; } } return NXT_OK; } static nxt_http_name_value_t * nxt_http_route_cookie(nxt_array_t *array, u_char *name, size_t name_length, u_char *start, u_char *end) { u_char c, *p; uint32_t hash; nxt_http_name_value_t *nv; nv = nxt_array_add(array); if (nxt_slow_path(nv == NULL)) { return NULL; } nv->name_length = name_length; nv->name = name; hash = NXT_HTTP_FIELD_HASH_INIT; for (p = name; p < name + name_length; p++) { c = *p; hash = nxt_http_field_hash_char(hash, c); } nv->hash = nxt_http_field_hash_end(hash) & 0xFFFF; while (start < end && end[-1] == ' ') { end--; } nv->value_length = end - start; nv->value = start; return nv; } static nxt_int_t nxt_http_route_test_cookie(nxt_http_request_t *r, nxt_http_route_rule_t *rule, nxt_array_t *array) { nxt_bool_t ret; nxt_http_name_value_t *nv, *end; ret = 0; nv = array->elts; end = nv + array->nelts; while (nv < end) { if (rule->u.name.hash == nv->hash && rule->u.name.length == nv->name_length && nxt_memcmp(rule->u.name.start, nv->name, nv->name_length) == 0) { ret = nxt_http_route_test_rule(r, rule, nv->value, nv->value_length); if (ret == 0) { break; } } nv++; } return ret; } static nxt_int_t nxt_http_route_test_rule(nxt_http_request_t *r, nxt_http_route_rule_t *rule, u_char *start, size_t length) { nxt_int_t ret; nxt_http_route_pattern_t *pattern, *end; ret = 1; pattern = &rule->pattern[0]; end = pattern + rule->items; while (pattern < end) { ret = nxt_http_route_pattern(r, pattern, start, length); /* nxt_http_route_pattern() returns either 1 or 0. */ ret ^= pattern->negative; if (pattern->any == ret) { return ret; } pattern++; } return ret; } static nxt_int_t nxt_http_route_pattern(nxt_http_request_t *r, nxt_http_route_pattern_t *pattern, u_char *start, size_t length) { u_char *p, *end, *test; size_t test_length; uint32_t i; nxt_array_t *pattern_slices; nxt_http_route_pattern_slice_t *pattern_slice; if (length < pattern->min_length) { return 0; } pattern_slices = pattern->pattern_slices; pattern_slice = pattern_slices->elts; end = start + length; for (i = 0; i < pattern_slices->nelts; i++, pattern_slice++) { test = pattern_slice->start; test_length = pattern_slice->length; switch (pattern_slice->type) { case NXT_HTTP_ROUTE_PATTERN_EXACT: return ((length == pattern->min_length) && nxt_http_route_memcmp(start, test, test_length, pattern->case_sensitive)); case NXT_HTTP_ROUTE_PATTERN_BEGIN: if (nxt_http_route_memcmp(start, test, test_length, pattern->case_sensitive)) { start += test_length; break; } return 0; case NXT_HTTP_ROUTE_PATTERN_END: p = end - test_length; if (nxt_http_route_memcmp(p, test, test_length, pattern->case_sensitive)) { end = p; break; } return 0; case NXT_HTTP_ROUTE_PATTERN_SUBSTRING: if (pattern->case_sensitive) { p = nxt_memstrn(start, end, (char *) test, test_length); } else { p = nxt_memcasestrn(start, end, (char *) test, test_length); } if (p == NULL) { return 0; } start = p + test_length; } } return 1; } static nxt_int_t nxt_http_route_memcmp(u_char *start, u_char *test, size_t test_length, nxt_bool_t case_sensitive) { nxt_int_t n; if (case_sensitive) { n = nxt_memcmp(start, test, test_length); } else { n = nxt_memcasecmp(start, test, test_length); } return (n == 0); }