/* * Copyright (C) Igor Sysoev */ #include #include #include #include static char *ngx_http_block(ngx_conf_t *cf, ngx_command_t *cmd, void *conf); static ngx_int_t ngx_http_init_phases(ngx_conf_t *cf, ngx_http_core_main_conf_t *cmcf); static ngx_int_t ngx_http_init_headers_in_hash(ngx_conf_t *cf, ngx_http_core_main_conf_t *cmcf); static ngx_int_t ngx_http_init_phase_handlers(ngx_conf_t *cf, ngx_http_core_main_conf_t *cmcf); static ngx_int_t ngx_http_init_server_lists(ngx_conf_t *cf, ngx_array_t *servers, ngx_array_t *in_ports); static ngx_int_t ngx_http_add_address(ngx_conf_t *cf, ngx_http_core_srv_conf_t *cscf, ngx_http_conf_in_port_t *in_port, ngx_http_listen_t *listen); static ngx_int_t ngx_http_add_names(ngx_conf_t *cf, ngx_http_core_srv_conf_t *cscf, ngx_http_conf_in_addr_t *in_addr); static char *ngx_http_merge_locations(ngx_conf_t *cf, ngx_queue_t *locations, void **loc_conf, ngx_http_module_t *module, ngx_uint_t ctx_index); static ngx_int_t ngx_http_init_locations(ngx_conf_t *cf, ngx_http_core_srv_conf_t *cscf, ngx_http_core_loc_conf_t *pclcf); static ngx_int_t ngx_http_init_static_location_trees(ngx_conf_t *cf, ngx_http_core_loc_conf_t *pclcf); static ngx_int_t ngx_http_cmp_locations(const ngx_queue_t *one, const ngx_queue_t *two); static ngx_int_t ngx_http_join_exact_locations(ngx_conf_t *cf, ngx_queue_t *locations); static void ngx_http_create_locations_list(ngx_queue_t *locations, ngx_queue_t *q); static ngx_http_location_tree_node_t * ngx_http_create_locations_tree(ngx_conf_t *cf, ngx_queue_t *locations, size_t prefix); static ngx_int_t ngx_http_optimize_servers(ngx_conf_t *cf, ngx_http_core_main_conf_t *cmcf, ngx_array_t *in_ports); static ngx_int_t ngx_http_cmp_conf_in_addrs(const void *one, const void *two); static int ngx_libc_cdecl ngx_http_cmp_dns_wildcards(const void *one, const void *two); static ngx_int_t ngx_http_init_listening(ngx_conf_t *cf, ngx_http_conf_in_port_t *in_port); ngx_uint_t ngx_http_max_module; ngx_int_t (*ngx_http_top_header_filter) (ngx_http_request_t *r); ngx_int_t (*ngx_http_top_body_filter) (ngx_http_request_t *r, ngx_chain_t *ch); static ngx_command_t ngx_http_commands[] = { { ngx_string("http"), NGX_MAIN_CONF|NGX_CONF_BLOCK|NGX_CONF_NOARGS, ngx_http_block, 0, 0, NULL }, ngx_null_command }; static ngx_core_module_t ngx_http_module_ctx = { ngx_string("http"), NULL, NULL }; ngx_module_t ngx_http_module = { NGX_MODULE_V1, &ngx_http_module_ctx, /* module context */ ngx_http_commands, /* module directives */ NGX_CORE_MODULE, /* module type */ NULL, /* init master */ NULL, /* init module */ NULL, /* init process */ NULL, /* init thread */ NULL, /* exit thread */ NULL, /* exit process */ NULL, /* exit master */ NGX_MODULE_V1_PADDING }; static char * ngx_http_block(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) { char *rv; ngx_uint_t mi, m, s; ngx_conf_t pcf; ngx_array_t in_ports; ngx_http_module_t *module; ngx_http_conf_ctx_t *ctx; ngx_http_core_loc_conf_t *clcf; ngx_http_core_srv_conf_t **cscfp; ngx_http_core_main_conf_t *cmcf; /* the main http context */ ctx = ngx_pcalloc(cf->pool, sizeof(ngx_http_conf_ctx_t)); if (ctx == NULL) { return NGX_CONF_ERROR; } *(ngx_http_conf_ctx_t **) conf = ctx; /* count the number of the http modules and set up their indices */ ngx_http_max_module = 0; for (m = 0; ngx_modules[m]; m++) { if (ngx_modules[m]->type != NGX_HTTP_MODULE) { continue; } ngx_modules[m]->ctx_index = ngx_http_max_module++; } /* the http main_conf context, it is the same in the all http contexts */ ctx->main_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module); if (ctx->main_conf == NULL) { return NGX_CONF_ERROR; } /* * the http null srv_conf context, it is used to merge * the server{}s' srv_conf's */ ctx->srv_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module); if (ctx->srv_conf == NULL) { return NGX_CONF_ERROR; } /* * the http null loc_conf context, it is used to merge * the server{}s' loc_conf's */ ctx->loc_conf = ngx_pcalloc(cf->pool, sizeof(void *) * ngx_http_max_module); if (ctx->loc_conf == NULL) { return NGX_CONF_ERROR; } /* * create the main_conf's, the null srv_conf's, and the null loc_conf's * of the all http modules */ for (m = 0; ngx_modules[m]; m++) { if (ngx_modules[m]->type != NGX_HTTP_MODULE) { continue; } module = ngx_modules[m]->ctx; mi = ngx_modules[m]->ctx_index; if (module->create_main_conf) { ctx->main_conf[mi] = module->create_main_conf(cf); if (ctx->main_conf[mi] == NULL) { return NGX_CONF_ERROR; } } if (module->create_srv_conf) { ctx->srv_conf[mi] = module->create_srv_conf(cf); if (ctx->srv_conf[mi] == NULL) { return NGX_CONF_ERROR; } } if (module->create_loc_conf) { ctx->loc_conf[mi] = module->create_loc_conf(cf); if (ctx->loc_conf[mi] == NULL) { return NGX_CONF_ERROR; } } } pcf = *cf; cf->ctx = ctx; for (m = 0; ngx_modules[m]; m++) { if (ngx_modules[m]->type != NGX_HTTP_MODULE) { continue; } module = ngx_modules[m]->ctx; if (module->preconfiguration) { if (module->preconfiguration(cf) != NGX_OK) { return NGX_CONF_ERROR; } } } /* parse inside the http{} block */ cf->module_type = NGX_HTTP_MODULE; cf->cmd_type = NGX_HTTP_MAIN_CONF; rv = ngx_conf_parse(cf, NULL); if (rv != NGX_CONF_OK) { goto failed; } /* * init http{} main_conf's, merge the server{}s' srv_conf's * and its location{}s' loc_conf's */ cmcf = ctx->main_conf[ngx_http_core_module.ctx_index]; cscfp = cmcf->servers.elts; for (m = 0; ngx_modules[m]; m++) { if (ngx_modules[m]->type != NGX_HTTP_MODULE) { continue; } module = ngx_modules[m]->ctx; mi = ngx_modules[m]->ctx_index; /* init http{} main_conf's */ if (module->init_main_conf) { rv = module->init_main_conf(cf, ctx->main_conf[mi]); if (rv != NGX_CONF_OK) { goto failed; } } for (s = 0; s < cmcf->servers.nelts; s++) { /* merge the server{}s' srv_conf's */ if (module->merge_srv_conf) { rv = module->merge_srv_conf(cf, ctx->srv_conf[mi], cscfp[s]->ctx->srv_conf[mi]); if (rv != NGX_CONF_OK) { goto failed; } } if (module->merge_loc_conf) { /* merge the server{}'s loc_conf */ rv = module->merge_loc_conf(cf, ctx->loc_conf[mi], cscfp[s]->ctx->loc_conf[mi]); if (rv != NGX_CONF_OK) { goto failed; } /* merge the locations{}' loc_conf's */ clcf = cscfp[s]->ctx->loc_conf[ngx_http_core_module.ctx_index]; rv = ngx_http_merge_locations(cf, clcf->locations, cscfp[s]->ctx->loc_conf, module, mi); if (rv != NGX_CONF_OK) { goto failed; } } } } /* create location trees */ for (s = 0; s < cmcf->servers.nelts; s++) { clcf = cscfp[s]->ctx->loc_conf[ngx_http_core_module.ctx_index]; if (ngx_http_init_locations(cf, cscfp[s], clcf) != NGX_OK) { return NGX_CONF_ERROR; } if (ngx_http_init_static_location_trees(cf, clcf) != NGX_OK) { return NGX_CONF_ERROR; } } if (ngx_http_init_phases(cf, cmcf) != NGX_OK) { return NGX_CONF_ERROR; } if (ngx_http_init_headers_in_hash(cf, cmcf) != NGX_OK) { return NGX_CONF_ERROR; } for (m = 0; ngx_modules[m]; m++) { if (ngx_modules[m]->type != NGX_HTTP_MODULE) { continue; } module = ngx_modules[m]->ctx; if (module->postconfiguration) { if (module->postconfiguration(cf) != NGX_OK) { return NGX_CONF_ERROR; } } } if (ngx_http_variables_init_vars(cf) != NGX_OK) { return NGX_CONF_ERROR; } /* * http{}'s cf->ctx was needed while the configuration merging * and in postconfiguration process */ *cf = pcf; if (ngx_http_init_phase_handlers(cf, cmcf) != NGX_OK) { return NGX_CONF_ERROR; } /* * create the lists of ports, addresses and server names * to find quickly the server core module configuration at run-time */ /* AF_INET only */ if (ngx_http_init_server_lists(cf, &cmcf->servers, &in_ports) != NGX_OK) { return NGX_CONF_ERROR; } /* optimize the lists of ports, addresses and server names */ /* AF_INET only */ if (ngx_http_optimize_servers(cf, cmcf, &in_ports) != NGX_OK) { return NGX_CONF_ERROR; } return NGX_CONF_OK; failed: *cf = pcf; return rv; } static ngx_int_t ngx_http_init_phases(ngx_conf_t *cf, ngx_http_core_main_conf_t *cmcf) { if (ngx_array_init(&cmcf->phases[NGX_HTTP_POST_READ_PHASE].handlers, cf->pool, 1, sizeof(ngx_http_handler_pt)) != NGX_OK) { return NGX_ERROR; } if (ngx_array_init(&cmcf->phases[NGX_HTTP_SERVER_REWRITE_PHASE].handlers, cf->pool, 1, sizeof(ngx_http_handler_pt)) != NGX_OK) { return NGX_ERROR; } if (ngx_array_init(&cmcf->phases[NGX_HTTP_REWRITE_PHASE].handlers, cf->pool, 1, sizeof(ngx_http_handler_pt)) != NGX_OK) { return NGX_ERROR; } if (ngx_array_init(&cmcf->phases[NGX_HTTP_PREACCESS_PHASE].handlers, cf->pool, 1, sizeof(ngx_http_handler_pt)) != NGX_OK) { return NGX_ERROR; } if (ngx_array_init(&cmcf->phases[NGX_HTTP_ACCESS_PHASE].handlers, cf->pool, 2, sizeof(ngx_http_handler_pt)) != NGX_OK) { return NGX_ERROR; } if (ngx_array_init(&cmcf->phases[NGX_HTTP_CONTENT_PHASE].handlers, cf->pool, 4, sizeof(ngx_http_handler_pt)) != NGX_OK) { return NGX_ERROR; } if (ngx_array_init(&cmcf->phases[NGX_HTTP_LOG_PHASE].handlers, cf->pool, 1, sizeof(ngx_http_handler_pt)) != NGX_OK) { return NGX_ERROR; } return NGX_OK; } static ngx_int_t ngx_http_init_headers_in_hash(ngx_conf_t *cf, ngx_http_core_main_conf_t *cmcf) { ngx_array_t headers_in; ngx_hash_key_t *hk; ngx_hash_init_t hash; ngx_http_header_t *header; if (ngx_array_init(&headers_in, cf->temp_pool, 32, sizeof(ngx_hash_key_t)) != NGX_OK) { return NGX_ERROR; } for (header = ngx_http_headers_in; header->name.len; header++) { hk = ngx_array_push(&headers_in); if (hk == NULL) { return NGX_ERROR; } hk->key = header->name; hk->key_hash = ngx_hash_key_lc(header->name.data, header->name.len); hk->value = header; } hash.hash = &cmcf->headers_in_hash; hash.key = ngx_hash_key_lc; hash.max_size = 512; hash.bucket_size = ngx_align(64, ngx_cacheline_size); hash.name = "headers_in_hash"; hash.pool = cf->pool; hash.temp_pool = NULL; if (ngx_hash_init(&hash, headers_in.elts, headers_in.nelts) != NGX_OK) { return NGX_ERROR; } return NGX_OK; } static ngx_int_t ngx_http_init_phase_handlers(ngx_conf_t *cf, ngx_http_core_main_conf_t *cmcf) { ngx_int_t j; ngx_uint_t i, n; ngx_uint_t find_config_index, use_rewrite, use_access; ngx_http_handler_pt *h; ngx_http_phase_handler_t *ph; ngx_http_phase_handler_pt checker; cmcf->phase_engine.server_rewrite_index = (ngx_uint_t) -1; cmcf->phase_engine.location_rewrite_index = (ngx_uint_t) -1; find_config_index = 0; use_rewrite = cmcf->phases[NGX_HTTP_REWRITE_PHASE].handlers.nelts ? 1 : 0; use_access = cmcf->phases[NGX_HTTP_ACCESS_PHASE].handlers.nelts ? 1 : 0; n = use_rewrite + use_access + 1; /* find config phase */ for (i = 0; i < NGX_HTTP_LOG_PHASE; i++) { n += cmcf->phases[i].handlers.nelts; } ph = ngx_pcalloc(cf->pool, n * sizeof(ngx_http_phase_handler_t) + sizeof(void *)); if (ph == NULL) { return NGX_ERROR; } cmcf->phase_engine.handlers = ph; n = 0; for (i = 0; i < NGX_HTTP_LOG_PHASE; i++) { h = cmcf->phases[i].handlers.elts; switch (i) { case NGX_HTTP_SERVER_REWRITE_PHASE: if (cmcf->phase_engine.server_rewrite_index == (ngx_uint_t) -1) { cmcf->phase_engine.server_rewrite_index = n; } checker = ngx_http_core_generic_phase; break; case NGX_HTTP_FIND_CONFIG_PHASE: find_config_index = n; ph->checker = ngx_http_core_find_config_phase; n++; ph++; continue; case NGX_HTTP_REWRITE_PHASE: if (cmcf->phase_engine.location_rewrite_index == (ngx_uint_t) -1) { cmcf->phase_engine.location_rewrite_index = n; } checker = ngx_http_core_generic_phase; break; case NGX_HTTP_POST_REWRITE_PHASE: if (use_rewrite) { ph->checker = ngx_http_core_post_rewrite_phase; ph->next = find_config_index; n++; ph++; } continue; case NGX_HTTP_ACCESS_PHASE: checker = ngx_http_core_access_phase; n++; break; case NGX_HTTP_POST_ACCESS_PHASE: if (use_access) { ph->checker = ngx_http_core_post_access_phase; ph->next = n; ph++; } continue; case NGX_HTTP_CONTENT_PHASE: checker = ngx_http_core_content_phase; break; default: checker = ngx_http_core_generic_phase; } n += cmcf->phases[i].handlers.nelts; for (j = cmcf->phases[i].handlers.nelts - 1; j >=0; j--) { ph->checker = checker; ph->handler = h[j]; ph->next = n; ph++; } } return NGX_OK; } static char * ngx_http_merge_locations(ngx_conf_t *cf, ngx_queue_t *locations, void **loc_conf, ngx_http_module_t *module, ngx_uint_t ctx_index) { char *rv; ngx_queue_t *q; ngx_http_core_loc_conf_t *clcf; ngx_http_location_queue_t *lq; if (locations == NULL) { return NGX_CONF_OK; } for (q = ngx_queue_head(locations); q != ngx_queue_sentinel(locations); q = ngx_queue_next(q)) { lq = (ngx_http_location_queue_t *) q; clcf = lq->exact ? lq->exact : lq->inclusive; rv = module->merge_loc_conf(cf, loc_conf[ctx_index], clcf->loc_conf[ctx_index]); if (rv != NGX_CONF_OK) { return rv; } rv = ngx_http_merge_locations(cf, clcf->locations, clcf->loc_conf, module, ctx_index); if (rv != NGX_CONF_OK) { return rv; } } return NGX_CONF_OK; } static ngx_int_t ngx_http_init_locations(ngx_conf_t *cf, ngx_http_core_srv_conf_t *cscf, ngx_http_core_loc_conf_t *pclcf) { ngx_uint_t n; ngx_queue_t *q, *locations, *named, tail; ngx_http_core_loc_conf_t *clcf; ngx_http_location_queue_t *lq; ngx_http_core_loc_conf_t **clcfp; #if (NGX_PCRE) ngx_uint_t r; ngx_queue_t *regex; #endif locations = pclcf->locations; if (locations == NULL) { return NGX_OK; } ngx_queue_sort(locations, ngx_http_cmp_locations); named = NULL; n = 0; #if (NGX_PCRE) regex = NULL; r = 0; #endif for (q = ngx_queue_head(locations); q != ngx_queue_sentinel(locations); q = ngx_queue_next(q)) { lq = (ngx_http_location_queue_t *) q; clcf = lq->exact ? lq->exact : lq->inclusive; if (ngx_http_init_locations(cf, NULL, clcf) != NGX_OK) { return NGX_ERROR; } #if (NGX_PCRE) if (clcf->regex) { r++; if (regex == NULL) { regex = q; } continue; } #endif if (clcf->named) { n++; if (named == NULL) { named = q; } continue; } if (clcf->noname) { break; } } if (q != ngx_queue_sentinel(locations)) { ngx_queue_split(locations, q, &tail); } if (named) { clcfp = ngx_palloc(cf->pool, (n + 1) * sizeof(ngx_http_core_loc_conf_t **)); if (clcfp == NULL) { return NGX_ERROR; } cscf->named_locations = clcfp; for (q = named; q != ngx_queue_sentinel(locations); q = ngx_queue_next(q)) { lq = (ngx_http_location_queue_t *) q; *(clcfp++) = lq->exact; } *clcfp = NULL; ngx_queue_split(locations, named, &tail); } #if (NGX_PCRE) if (regex) { clcfp = ngx_palloc(cf->pool, (r + 1) * sizeof(ngx_http_core_loc_conf_t **)); if (clcfp == NULL) { return NGX_ERROR; } pclcf->regex_locations = clcfp; for (q = regex; q != ngx_queue_sentinel(locations); q = ngx_queue_next(q)) { lq = (ngx_http_location_queue_t *) q; *(clcfp++) = lq->exact; } *clcfp = NULL; ngx_queue_split(locations, regex, &tail); } #endif return NGX_OK; } static ngx_int_t ngx_http_init_static_location_trees(ngx_conf_t *cf, ngx_http_core_loc_conf_t *pclcf) { ngx_queue_t *q, *locations; ngx_http_core_loc_conf_t *clcf; ngx_http_location_queue_t *lq; locations = pclcf->locations; if (locations == NULL) { return NGX_OK; } if (ngx_queue_empty(locations)) { return NGX_OK; } for (q = ngx_queue_head(locations); q != ngx_queue_sentinel(locations); q = ngx_queue_next(q)) { lq = (ngx_http_location_queue_t *) q; clcf = lq->exact ? lq->exact : lq->inclusive; if (ngx_http_init_static_location_trees(cf, clcf) != NGX_OK) { return NGX_ERROR; } } if (ngx_http_join_exact_locations(cf, locations) != NGX_OK) { return NGX_ERROR; } ngx_http_create_locations_list(locations, ngx_queue_head(locations)); pclcf->static_locations = ngx_http_create_locations_tree(cf, locations, 0); if (pclcf->static_locations == NULL) { return NGX_ERROR; } return NGX_OK; } ngx_int_t ngx_http_add_location(ngx_conf_t *cf, ngx_queue_t **locations, ngx_http_core_loc_conf_t *clcf) { ngx_http_location_queue_t *lq; if (*locations == NULL) { *locations = ngx_palloc(cf->temp_pool, sizeof(ngx_http_location_queue_t)); if (*locations == NULL) { return NGX_ERROR; } ngx_queue_init(*locations); } lq = ngx_palloc(cf->temp_pool, sizeof(ngx_http_location_queue_t)); if (lq == NULL) { return NGX_ERROR; } if (clcf->exact_match #if (NGX_PCRE) || clcf->regex #endif || clcf->named || clcf->noname) { lq->exact = clcf; lq->inclusive = NULL; } else { lq->exact = NULL; lq->inclusive = clcf; } lq->name = &clcf->name; lq->file_name = cf->conf_file->file.name.data; lq->line = cf->conf_file->line; ngx_queue_init(&lq->list); ngx_queue_insert_tail(*locations, &lq->queue); return NGX_OK; } static ngx_int_t ngx_http_cmp_locations(const ngx_queue_t *one, const ngx_queue_t *two) { ngx_int_t rc; ngx_http_core_loc_conf_t *first, *second; ngx_http_location_queue_t *lq1, *lq2; lq1 = (ngx_http_location_queue_t *) one; lq2 = (ngx_http_location_queue_t *) two; first = lq1->exact ? lq1->exact : lq1->inclusive; second = lq2->exact ? lq2->exact : lq2->inclusive; if (first->noname && !second->noname) { /* shift no named locations to the end */ return 1; } if (!first->noname && second->noname) { /* shift no named locations to the end */ return -1; } if (first->noname || second->noname) { /* do not sort no named locations */ return 0; } if (first->named && !second->named) { /* shift named locations to the end */ return 1; } if (!first->named && second->named) { /* shift named locations to the end */ return -1; } if (first->named && second->named) { return ngx_strcmp(first->name.data, second->name.data); } #if (NGX_PCRE) if (first->regex && !second->regex) { /* shift the regex matches to the end */ return 1; } if (!first->regex && second->regex) { /* shift the regex matches to the end */ return -1; } if (first->regex || second->regex) { /* do not sort the regex matches */ return 0; } #endif rc = ngx_strcmp(first->name.data, second->name.data); if (rc == 0 && !first->exact_match && second->exact_match) { /* an exact match must be before the same inclusive one */ return 1; } return rc; } static ngx_int_t ngx_http_join_exact_locations(ngx_conf_t *cf, ngx_queue_t *locations) { ngx_queue_t *q, *x; ngx_http_location_queue_t *lq, *lx; q = ngx_queue_head(locations); while (q != ngx_queue_last(locations)) { x = ngx_queue_next(q); lq = (ngx_http_location_queue_t *) q; lx = (ngx_http_location_queue_t *) x; if (ngx_strcmp(lq->name->data, lx->name->data) == 0) { if ((lq->exact && lx->exact) || (lq->inclusive && lx->inclusive)) { ngx_log_error(NGX_LOG_EMERG, cf->log, 0, "duplicate location \"%V\" in %s:%ui", lx->name, lx->file_name, lx->line); return NGX_ERROR; } lq->inclusive = lx->inclusive; ngx_queue_remove(x); continue; } q = ngx_queue_next(q); } return NGX_OK; } static void ngx_http_create_locations_list(ngx_queue_t *locations, ngx_queue_t *q) { u_char *name; size_t len; ngx_queue_t *x, tail; ngx_http_location_queue_t *lq, *lx; if (q == ngx_queue_last(locations)) { return; } lq = (ngx_http_location_queue_t *) q; if (lq->inclusive == NULL) { ngx_http_create_locations_list(locations, ngx_queue_next(q)); return; } len = lq->name->len; name = lq->name->data; for (x = ngx_queue_next(q); x != ngx_queue_sentinel(locations); x = ngx_queue_next(x)) { lx = (ngx_http_location_queue_t *) x; if (len > lx->name->len || (ngx_strncmp(name, lx->name->data, len) != 0)) { break; } } q = ngx_queue_next(q); if (q == x) { ngx_http_create_locations_list(locations, x); return; } ngx_queue_split(locations, q, &tail); ngx_queue_add(&lq->list, &tail); if (x == ngx_queue_sentinel(locations)) { ngx_http_create_locations_list(&lq->list, ngx_queue_head(&lq->list)); return; } ngx_queue_split(&lq->list, x, &tail); ngx_queue_add(locations, &tail); ngx_http_create_locations_list(&lq->list, ngx_queue_head(&lq->list)); ngx_http_create_locations_list(locations, x); } /* * to keep cache locality for left leaf nodes, allocate nodes in following * order: node, left subtree, right subtree, inclusive subtree */ static ngx_http_location_tree_node_t * ngx_http_create_locations_tree(ngx_conf_t *cf, ngx_queue_t *locations, size_t prefix) { size_t len; ngx_queue_t *q, tail; ngx_http_location_queue_t *lq; ngx_http_location_tree_node_t *node; q = ngx_queue_middle(locations); lq = (ngx_http_location_queue_t *) q; len = lq->name->len - prefix; node = ngx_palloc(cf->pool, offsetof(ngx_http_location_tree_node_t, name) + len); if (node == NULL) { return NULL; } node->left = NULL; node->right = NULL; node->tree = NULL; node->exact = lq->exact; node->inclusive = lq->inclusive; node->auto_redirect = (u_char) ((lq->exact && lq->exact->auto_redirect) || (lq->inclusive && lq->inclusive->auto_redirect)); node->len = (u_char) len; ngx_memcpy(node->name, &lq->name->data[prefix], len); ngx_queue_split(locations, q, &tail); if (ngx_queue_empty(locations)) { /* * ngx_queue_split() insures that if left part is empty, * then right one is empty too */ goto inclusive; } node->left = ngx_http_create_locations_tree(cf, locations, prefix); if (node->left == NULL) { return NULL; } ngx_queue_remove(q); if (ngx_queue_empty(&tail)) { goto inclusive; } node->right = ngx_http_create_locations_tree(cf, &tail, prefix); if (node->right == NULL) { return NULL; } inclusive: if (ngx_queue_empty(&lq->list)) { return node; } node->tree = ngx_http_create_locations_tree(cf, &lq->list, prefix + len); if (node->tree == NULL) { return NULL; } return node; } static ngx_int_t ngx_http_init_server_lists(ngx_conf_t *cf, ngx_array_t *servers, ngx_array_t *in_ports) { ngx_uint_t s, l, p, a; ngx_http_listen_t *listen; ngx_http_conf_in_port_t *in_port; ngx_http_conf_in_addr_t *in_addr; ngx_http_core_srv_conf_t **cscfp; if (ngx_array_init(in_ports, cf->temp_pool, 2, sizeof(ngx_http_conf_in_port_t)) != NGX_OK) { return NGX_ERROR; } /* "server" directives */ cscfp = servers->elts; for (s = 0; s < servers->nelts; s++) { /* "listen" directives */ listen = cscfp[s]->listen.elts; for (l = 0; l < cscfp[s]->listen.nelts; l++) { /* AF_INET only */ in_port = in_ports->elts; for (p = 0; p < in_ports->nelts; p++) { if (listen[l].port != in_port[p].port) { continue; } /* the port is already in the port list */ in_addr = in_port[p].addrs.elts; for (a = 0; a < in_port[p].addrs.nelts; a++) { if (listen[l].addr != in_addr[a].addr) { continue; } /* the address is already in the address list */ if (ngx_http_add_names(cf, cscfp[s], &in_addr[a]) != NGX_OK) { return NGX_ERROR; } /* * check the duplicate "default" server * for this address:port */ if (listen[l].conf.default_server) { if (in_addr[a].default_server) { ngx_log_error(NGX_LOG_ERR, cf->log, 0, "the duplicate default server in %s:%ui", listen[l].file_name, listen[l].line); return NGX_ERROR; } in_addr[a].core_srv_conf = cscfp[s]; in_addr[a].default_server = 1; } goto found; } /* * add the address to the addresses list that * bound to this port */ if (ngx_http_add_address(cf, cscfp[s], &in_port[p], &listen[l]) != NGX_OK) { return NGX_ERROR; } goto found; } /* add the port to the in_port list */ in_port = ngx_array_push(in_ports); if (in_port == NULL) { return NGX_ERROR; } in_port->port = listen[l].port; in_port->addrs.elts = NULL; if (ngx_http_add_address(cf, cscfp[s], in_port, &listen[l]) != NGX_OK) { return NGX_ERROR; } found: continue; } } return NGX_OK; } /* * add the server address, the server names and the server core module * configurations to the port (in_port) */ static ngx_int_t ngx_http_add_address(ngx_conf_t *cf, ngx_http_core_srv_conf_t *cscf, ngx_http_conf_in_port_t *in_port, ngx_http_listen_t *listen) { ngx_http_conf_in_addr_t *in_addr; if (in_port->addrs.elts == NULL) { if (ngx_array_init(&in_port->addrs, cf->temp_pool, 4, sizeof(ngx_http_conf_in_addr_t)) != NGX_OK) { return NGX_ERROR; } } in_addr = ngx_array_push(&in_port->addrs); if (in_addr == NULL) { return NGX_ERROR; } in_addr->addr = listen->addr; in_addr->hash.buckets = NULL; in_addr->hash.size = 0; in_addr->wc_head = NULL; in_addr->wc_tail = NULL; in_addr->names.elts = NULL; #if (NGX_PCRE) in_addr->nregex = 0; in_addr->regex = NULL; #endif in_addr->core_srv_conf = cscf; in_addr->default_server = listen->conf.default_server; in_addr->bind = listen->conf.bind; in_addr->listen_conf = &listen->conf; #if (NGX_DEBUG) { u_char text[20]; ngx_inet_ntop(AF_INET, &in_addr->addr, text, 20); ngx_log_debug2(NGX_LOG_DEBUG_HTTP, cf->log, 0, "address: %s:%d", text, in_port->port); } #endif return ngx_http_add_names(cf, cscf, in_addr); } /* * add the server names and the server core module * configurations to the address:port (in_addr) */ static ngx_int_t ngx_http_add_names(ngx_conf_t *cf, ngx_http_core_srv_conf_t *cscf, ngx_http_conf_in_addr_t *in_addr) { ngx_uint_t i, n; ngx_http_server_name_t *server_names, *name; if (in_addr->names.elts == NULL) { if (ngx_array_init(&in_addr->names, cf->temp_pool, 4, sizeof(ngx_http_server_name_t)) != NGX_OK) { return NGX_ERROR; } } server_names = cscf->server_names.elts; for (i = 0; i < cscf->server_names.nelts; i++) { for (n = 0; n < server_names[i].name.len; n++) { server_names[i].name.data[n] = ngx_tolower(server_names[i].name.data[n]); } ngx_log_debug1(NGX_LOG_DEBUG_HTTP, cf->log, 0, "name: %V", &server_names[i].name); name = ngx_array_push(&in_addr->names); if (name == NULL) { return NGX_ERROR; } *name = server_names[i]; } return NGX_OK; } static ngx_int_t ngx_http_optimize_servers(ngx_conf_t *cf, ngx_http_core_main_conf_t *cmcf, ngx_array_t *in_ports) { ngx_int_t rc; ngx_uint_t s, p, a; ngx_hash_init_t hash; ngx_http_server_name_t *name; ngx_hash_keys_arrays_t ha; ngx_http_conf_in_port_t *in_port; ngx_http_conf_in_addr_t *in_addr; #if (NGX_PCRE) ngx_uint_t regex, i; #endif in_port = in_ports->elts; for (p = 0; p < in_ports->nelts; p++) { ngx_sort(in_port[p].addrs.elts, (size_t) in_port[p].addrs.nelts, sizeof(ngx_http_conf_in_addr_t), ngx_http_cmp_conf_in_addrs); /* * check whether all name-based servers have * the same configuraiton as the default server */ in_addr = in_port[p].addrs.elts; for (a = 0; a < in_port[p].addrs.nelts; a++) { name = in_addr[a].names.elts; for (s = 0; s < in_addr[a].names.nelts; s++) { if (in_addr[a].core_srv_conf != name[s].core_srv_conf) { goto virtual_names; } } /* * if all name-based servers have the same configuration * as the default server, then we do not need to check * them at run-time at all */ in_addr[a].names.nelts = 0; continue; virtual_names: ngx_memzero(&ha, sizeof(ngx_hash_keys_arrays_t)); ha.temp_pool = ngx_create_pool(16384, cf->log); if (ha.temp_pool == NULL) { return NGX_ERROR; } ha.pool = cf->pool; if (ngx_hash_keys_array_init(&ha, NGX_HASH_LARGE) != NGX_OK) { goto failed; } #if (NGX_PCRE) regex = 0; #endif name = in_addr[a].names.elts; for (s = 0; s < in_addr[a].names.nelts; s++) { #if (NGX_PCRE) if (name[s].regex) { regex++; continue; } #endif rc = ngx_hash_add_key(&ha, &name[s].name, name[s].core_srv_conf, NGX_HASH_WILDCARD_KEY); if (rc == NGX_ERROR) { return NGX_ERROR; } if (rc == NGX_DECLINED) { ngx_log_error(NGX_LOG_EMERG, cf->log, 0, "invalid server name or wildcard \"%V\" on %s", &name[s].name, in_addr[a].listen_conf->addr); return NGX_ERROR; } if (rc == NGX_BUSY) { ngx_log_error(NGX_LOG_WARN, cf->log, 0, "conflicting server name \"%V\" on %s, ignored", &name[s].name, in_addr[a].listen_conf->addr); } } hash.key = ngx_hash_key_lc; hash.max_size = cmcf->server_names_hash_max_size; hash.bucket_size = cmcf->server_names_hash_bucket_size; hash.name = "server_names_hash"; hash.pool = cf->pool; if (ha.keys.nelts) { hash.hash = &in_addr[a].hash; hash.temp_pool = NULL; if (ngx_hash_init(&hash, ha.keys.elts, ha.keys.nelts) != NGX_OK) { goto failed; } } if (ha.dns_wc_head.nelts) { ngx_qsort(ha.dns_wc_head.elts, (size_t) ha.dns_wc_head.nelts, sizeof(ngx_hash_key_t), ngx_http_cmp_dns_wildcards); hash.hash = NULL; hash.temp_pool = ha.temp_pool; if (ngx_hash_wildcard_init(&hash, ha.dns_wc_head.elts, ha.dns_wc_head.nelts) != NGX_OK) { goto failed; } in_addr[a].wc_head = (ngx_hash_wildcard_t *) hash.hash; } if (ha.dns_wc_tail.nelts) { ngx_qsort(ha.dns_wc_tail.elts, (size_t) ha.dns_wc_tail.nelts, sizeof(ngx_hash_key_t), ngx_http_cmp_dns_wildcards); hash.hash = NULL; hash.temp_pool = ha.temp_pool; if (ngx_hash_wildcard_init(&hash, ha.dns_wc_tail.elts, ha.dns_wc_tail.nelts) != NGX_OK) { goto failed; } in_addr[a].wc_tail = (ngx_hash_wildcard_t *) hash.hash; } ngx_destroy_pool(ha.temp_pool); #if (NGX_PCRE) if (regex == 0) { continue; } in_addr[a].nregex = regex; in_addr[a].regex = ngx_palloc(cf->pool, regex * sizeof(ngx_http_server_name_t)); if (in_addr[a].regex == NULL) { return NGX_ERROR; } for (i = 0, s = 0; s < in_addr[a].names.nelts; s++) { if (name[s].regex) { in_addr[a].regex[i++] = name[s]; } } #endif } if (ngx_http_init_listening(cf, &in_port[p]) != NGX_OK) { return NGX_ERROR; } } return NGX_OK; failed: ngx_destroy_pool(ha.temp_pool); return NGX_ERROR; } static ngx_int_t ngx_http_cmp_conf_in_addrs(const void *one, const void *two) { ngx_http_conf_in_addr_t *first, *second; first = (ngx_http_conf_in_addr_t *) one; second = (ngx_http_conf_in_addr_t *) two; if (first->addr == INADDR_ANY) { /* the INADDR_ANY must be the last resort, shift it to the end */ return 1; } if (first->bind && !second->bind) { /* shift explicit bind()ed addresses to the start */ return -1; } if (!first->bind && second->bind) { /* shift explicit bind()ed addresses to the start */ return 1; } /* do not sort by default */ return 0; } static int ngx_libc_cdecl ngx_http_cmp_dns_wildcards(const void *one, const void *two) { ngx_hash_key_t *first, *second; first = (ngx_hash_key_t *) one; second = (ngx_hash_key_t *) two; return ngx_strcmp(first->key.data, second->key.data); } static ngx_int_t ngx_http_init_listening(ngx_conf_t *cf, ngx_http_conf_in_port_t *in_port) { ngx_uint_t i, a, last, bind_all, done; ngx_listening_t *ls; ngx_http_in_port_t *hip; ngx_http_conf_in_addr_t *in_addr; ngx_http_virtual_names_t *vn; ngx_http_core_loc_conf_t *clcf; ngx_http_core_srv_conf_t *cscf; in_addr = in_port->addrs.elts; last = in_port->addrs.nelts; /* * if there is a binding to a "*:port" then we need to bind() * to the "*:port" only and ignore other bindings */ if (in_addr[last - 1].addr == INADDR_ANY) { in_addr[last - 1].bind = 1; bind_all = 0; } else { bind_all = 1; } a = 0; while (a < last) { if (!bind_all && !in_addr[a].bind) { a++; continue; } ls = ngx_listening_inet_stream_socket(cf, in_addr[a].addr, in_port->port); if (ls == NULL) { return NGX_ERROR; } ls->addr_ntop = 1; ls->handler = ngx_http_init_connection; cscf = in_addr[a].core_srv_conf; ls->pool_size = cscf->connection_pool_size; ls->post_accept_timeout = cscf->client_header_timeout; clcf = cscf->ctx->loc_conf[ngx_http_core_module.ctx_index]; ls->log = *clcf->err_log; ls->log.data = &ls->addr_text; ls->log.handler = ngx_accept_log_error; #if (NGX_WIN32) { ngx_iocp_conf_t *iocpcf; iocpcf = ngx_event_get_conf(cf->cycle->conf_ctx, ngx_iocp_module); if (iocpcf->acceptex_read) { ls->post_accept_buffer_size = cscf->client_header_buffer_size; } } #endif ls->backlog = in_addr[a].listen_conf->backlog; ls->rcvbuf = in_addr[a].listen_conf->rcvbuf; ls->sndbuf = in_addr[a].listen_conf->sndbuf; #if (NGX_HAVE_DEFERRED_ACCEPT && defined SO_ACCEPTFILTER) ls->accept_filter = in_addr[a].listen_conf->accept_filter; #endif #if (NGX_HAVE_DEFERRED_ACCEPT && defined TCP_DEFER_ACCEPT) ls->deferred_accept = in_addr[a].listen_conf->deferred_accept; #endif hip = ngx_palloc(cf->pool, sizeof(ngx_http_in_port_t)); if (hip == NULL) { return NGX_ERROR; } hip->port = in_port->port; hip->port_text.data = ngx_pnalloc(cf->pool, 7); if (hip->port_text.data == NULL) { return NGX_ERROR; } ls->servers = hip; hip->port_text.len = ngx_sprintf(hip->port_text.data, ":%d", hip->port) - hip->port_text.data; in_addr = in_port->addrs.elts; if (in_addr[a].bind && in_addr[a].addr != INADDR_ANY) { hip->naddrs = 1; done = 0; } else if (in_port->addrs.nelts > 1 && in_addr[last - 1].addr == INADDR_ANY) { hip->naddrs = last; done = 1; } else { hip->naddrs = 1; done = 0; } hip->addrs = ngx_pcalloc(cf->pool, hip->naddrs * sizeof(ngx_http_in_addr_t)); if (hip->addrs == NULL) { return NGX_ERROR; } for (i = 0; i < hip->naddrs; i++) { hip->addrs[i].addr = in_addr[i].addr; hip->addrs[i].core_srv_conf = in_addr[i].core_srv_conf; if (in_addr[i].hash.buckets == NULL && (in_addr[i].wc_head == NULL || in_addr[i].wc_head->hash.buckets == NULL) && (in_addr[i].wc_head == NULL || in_addr[i].wc_head->hash.buckets == NULL)) { continue; } vn = ngx_palloc(cf->pool, sizeof(ngx_http_virtual_names_t)); if (vn == NULL) { return NGX_ERROR; } hip->addrs[i].virtual_names = vn; vn->names.hash = in_addr[i].hash; vn->names.wc_head = in_addr[i].wc_head; vn->names.wc_tail = in_addr[i].wc_tail; #if (NGX_PCRE) vn->nregex = in_addr[i].nregex; vn->regex = in_addr[i].regex; #endif } if (done) { return NGX_OK; } in_addr++; in_port->addrs.elts = in_addr; last--; a = 0; } return NGX_OK; }