/* * Copyright (C) Igor Sysoev * Copyright (C) Nginx, Inc. */ #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_add_addresses(ngx_conf_t *cf, ngx_http_core_srv_conf_t *cscf, ngx_http_conf_port_t *port, ngx_http_listen_opt_t *lsopt); static ngx_int_t ngx_http_add_address(ngx_conf_t *cf, ngx_http_core_srv_conf_t *cscf, ngx_http_conf_port_t *port, ngx_http_listen_opt_t *lsopt); static ngx_int_t ngx_http_add_server(ngx_conf_t *cf, ngx_http_core_srv_conf_t *cscf, ngx_http_conf_addr_t *addr); static char *ngx_http_merge_servers(ngx_conf_t *cf, ngx_http_core_main_conf_t *cmcf, ngx_http_module_t *module, ngx_uint_t ctx_index); 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_escape_location_name(ngx_conf_t *cf, ngx_http_core_loc_conf_t *clcf); 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 *ports); static ngx_int_t ngx_http_server_names(ngx_conf_t *cf, ngx_http_core_main_conf_t *cmcf, ngx_http_conf_addr_t *addr); static ngx_int_t ngx_http_cmp_conf_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_port_t *port); static ngx_listening_t *ngx_http_add_listening(ngx_conf_t *cf, ngx_http_conf_addr_t *addr); static ngx_int_t ngx_http_add_addrs(ngx_conf_t *cf, ngx_http_port_t *hport, ngx_http_conf_addr_t *addr); #if (NGX_HAVE_INET6) static ngx_int_t ngx_http_add_addrs6(ngx_conf_t *cf, ngx_http_port_t *hport, ngx_http_conf_addr_t *addr); #endif ngx_uint_t ngx_http_max_module; ngx_http_output_header_filter_pt ngx_http_top_header_filter; ngx_http_output_body_filter_pt ngx_http_top_body_filter; ngx_http_request_body_filter_pt ngx_http_top_request_body_filter; ngx_str_t ngx_http_html_default_types[] = { ngx_string("text/html"), ngx_null_string }; 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_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; if (*(ngx_http_conf_ctx_t **) conf) { return "is duplicate"; } /* 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 = ngx_count_modules(cf->cycle, NGX_HTTP_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; cf->cycle->modules[m]; m++) { if (cf->cycle->modules[m]->type != NGX_HTTP_MODULE) { continue; } module = cf->cycle->modules[m]->ctx; mi = cf->cycle->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; cf->cycle->modules[m]; m++) { if (cf->cycle->modules[m]->type != NGX_HTTP_MODULE) { continue; } module = cf->cycle->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; cf->cycle->modules[m]; m++) { if (cf->cycle->modules[m]->type != NGX_HTTP_MODULE) { continue; } module = cf->cycle->modules[m]->ctx; mi = cf->cycle->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; } } rv = ngx_http_merge_servers(cf, cmcf, 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; cf->cycle->modules[m]; m++) { if (cf->cycle->modules[m]->type != NGX_HTTP_MODULE) { continue; } module = cf->cycle->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; } /* optimize the lists of ports, addresses and server names */ if (ngx_http_optimize_servers(cf, cmcf, cmcf->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_PRECONTENT_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 = 1 /* find config phase */ + use_rewrite /* post rewrite phase */ + use_access; /* post access 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_rewrite_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_rewrite_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_servers(ngx_conf_t *cf, ngx_http_core_main_conf_t *cmcf, ngx_http_module_t *module, ngx_uint_t ctx_index) { char *rv; ngx_uint_t s; ngx_http_conf_ctx_t *ctx, saved; ngx_http_core_loc_conf_t *clcf; ngx_http_core_srv_conf_t **cscfp; cscfp = cmcf->servers.elts; ctx = (ngx_http_conf_ctx_t *) cf->ctx; saved = *ctx; rv = NGX_CONF_OK; for (s = 0; s < cmcf->servers.nelts; s++) { /* merge the server{}s' srv_conf's */ ctx->srv_conf = cscfp[s]->ctx->srv_conf; if (module->merge_srv_conf) { rv = module->merge_srv_conf(cf, saved.srv_conf[ctx_index], cscfp[s]->ctx->srv_conf[ctx_index]); if (rv != NGX_CONF_OK) { goto failed; } } if (module->merge_loc_conf) { /* merge the server{}'s loc_conf */ ctx->loc_conf = cscfp[s]->ctx->loc_conf; rv = module->merge_loc_conf(cf, saved.loc_conf[ctx_index], cscfp[s]->ctx->loc_conf[ctx_index]); 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, ctx_index); if (rv != NGX_CONF_OK) { goto failed; } } } failed: *ctx = saved; return rv; } 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_conf_ctx_t *ctx, saved; ngx_http_core_loc_conf_t *clcf; ngx_http_location_queue_t *lq; if (locations == NULL) { return NGX_CONF_OK; } ctx = (ngx_http_conf_ctx_t *) cf->ctx; saved = *ctx; 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; ctx->loc_conf = clcf->loc_conf; 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; } } *ctx = saved; 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); if (ngx_http_escape_location_name(cf, clcf) != NGX_OK) { return NGX_ERROR; } return NGX_OK; } static ngx_int_t ngx_http_escape_location_name(ngx_conf_t *cf, ngx_http_core_loc_conf_t *clcf) { u_char *p; size_t len; uintptr_t escape; escape = 2 * ngx_escape_uri(NULL, clcf->name.data, clcf->name.len, NGX_ESCAPE_URI); if (escape) { len = clcf->name.len + escape; p = ngx_pnalloc(cf->pool, len); if (p == NULL) { return NGX_ERROR; } clcf->escaped_name.len = len; clcf->escaped_name.data = p; ngx_escape_uri(p, clcf->name.data, clcf->name.len, NGX_ESCAPE_URI); } else { clcf->escaped_name = clcf->name; } 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_filename_cmp(first->name.data, second->name.data, ngx_min(first->name.len, second->name.len) + 1); 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 (lq->name->len == lx->name->len && ngx_filename_cmp(lq->name->data, lx->name->data, lx->name->len) == 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_filename_cmp(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; } ngx_int_t ngx_http_add_listen(ngx_conf_t *cf, ngx_http_core_srv_conf_t *cscf, ngx_http_listen_opt_t *lsopt) { in_port_t p; ngx_uint_t i; struct sockaddr *sa; ngx_http_conf_port_t *port; ngx_http_core_main_conf_t *cmcf; cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module); if (cmcf->ports == NULL) { cmcf->ports = ngx_array_create(cf->temp_pool, 2, sizeof(ngx_http_conf_port_t)); if (cmcf->ports == NULL) { return NGX_ERROR; } } sa = lsopt->sockaddr; p = ngx_inet_get_port(sa); port = cmcf->ports->elts; for (i = 0; i < cmcf->ports->nelts; i++) { if (p != port[i].port || lsopt->type != port[i].type || sa->sa_family != port[i].family) { continue; } /* a port is already in the port list */ return ngx_http_add_addresses(cf, cscf, &port[i], lsopt); } /* add a port to the port list */ port = ngx_array_push(cmcf->ports); if (port == NULL) { return NGX_ERROR; } port->family = sa->sa_family; port->type = lsopt->type; port->port = p; port->addrs.elts = NULL; return ngx_http_add_address(cf, cscf, port, lsopt); } static ngx_int_t ngx_http_add_addresses(ngx_conf_t *cf, ngx_http_core_srv_conf_t *cscf, ngx_http_conf_port_t *port, ngx_http_listen_opt_t *lsopt) { ngx_uint_t i, default_server, proxy_protocol; ngx_http_conf_addr_t *addr; #if (NGX_HTTP_SSL) ngx_uint_t ssl; #endif #if (NGX_HTTP_V2) ngx_uint_t http2; #endif #if (NGX_HTTP_V3) ngx_uint_t http3; ngx_uint_t quic; #endif /* * we cannot compare whole sockaddr struct's as kernel * may fill some fields in inherited sockaddr struct's */ addr = port->addrs.elts; for (i = 0; i < port->addrs.nelts; i++) { if (ngx_cmp_sockaddr(lsopt->sockaddr, lsopt->socklen, addr[i].opt.sockaddr, addr[i].opt.socklen, 0) != NGX_OK) { continue; } /* the address is already in the address list */ if (ngx_http_add_server(cf, cscf, &addr[i]) != NGX_OK) { return NGX_ERROR; } /* preserve default_server bit during listen options overwriting */ default_server = addr[i].opt.default_server; proxy_protocol = lsopt->proxy_protocol || addr[i].opt.proxy_protocol; #if (NGX_HTTP_SSL) ssl = lsopt->ssl || addr[i].opt.ssl; #endif #if (NGX_HTTP_V2) http2 = lsopt->http2 || addr[i].opt.http2; #endif #if (NGX_HTTP_V3) http3 = lsopt->http3 || addr[i].opt.http3; quic = lsopt->quic || addr[i].opt.quic; #endif if (lsopt->set) { if (addr[i].opt.set) { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "duplicate listen options for %V", &addr[i].opt.addr_text); return NGX_ERROR; } addr[i].opt = *lsopt; } /* check the duplicate "default" server for this address:port */ if (lsopt->default_server) { if (default_server) { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "a duplicate default server for %V", &addr[i].opt.addr_text); return NGX_ERROR; } default_server = 1; addr[i].default_server = cscf; } addr[i].opt.default_server = default_server; addr[i].opt.proxy_protocol = proxy_protocol; #if (NGX_HTTP_SSL) addr[i].opt.ssl = ssl; #endif #if (NGX_HTTP_V2) addr[i].opt.http2 = http2; #endif #if (NGX_HTTP_V3) addr[i].opt.http3 = http3; addr[i].opt.quic = quic; #endif return NGX_OK; } /* add the address to the addresses list that bound to this port */ return ngx_http_add_address(cf, cscf, port, lsopt); } /* * add the server address, the server names and the server core module * configurations to the port list */ static ngx_int_t ngx_http_add_address(ngx_conf_t *cf, ngx_http_core_srv_conf_t *cscf, ngx_http_conf_port_t *port, ngx_http_listen_opt_t *lsopt) { ngx_http_conf_addr_t *addr; if (port->addrs.elts == NULL) { if (ngx_array_init(&port->addrs, cf->temp_pool, 4, sizeof(ngx_http_conf_addr_t)) != NGX_OK) { return NGX_ERROR; } } #if (NGX_HTTP_V2 && NGX_HTTP_SSL \ && !defined TLSEXT_TYPE_application_layer_protocol_negotiation) if (lsopt->http2 && lsopt->ssl) { ngx_conf_log_error(NGX_LOG_WARN, cf, 0, "nginx was built with OpenSSL that lacks ALPN " "support, HTTP/2 is not enabled for %V", &lsopt->addr_text); } #endif addr = ngx_array_push(&port->addrs); if (addr == NULL) { return NGX_ERROR; } addr->opt = *lsopt; addr->hash.buckets = NULL; addr->hash.size = 0; addr->wc_head = NULL; addr->wc_tail = NULL; #if (NGX_PCRE) addr->nregex = 0; addr->regex = NULL; #endif addr->default_server = cscf; addr->servers.elts = NULL; return ngx_http_add_server(cf, cscf, addr); } /* add the server core module configuration to the address:port */ static ngx_int_t ngx_http_add_server(ngx_conf_t *cf, ngx_http_core_srv_conf_t *cscf, ngx_http_conf_addr_t *addr) { ngx_uint_t i; ngx_http_core_srv_conf_t **server; if (addr->servers.elts == NULL) { if (ngx_array_init(&addr->servers, cf->temp_pool, 4, sizeof(ngx_http_core_srv_conf_t *)) != NGX_OK) { return NGX_ERROR; } } else { server = addr->servers.elts; for (i = 0; i < addr->servers.nelts; i++) { if (server[i] == cscf) { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "a duplicate listen %V", &addr->opt.addr_text); return NGX_ERROR; } } } server = ngx_array_push(&addr->servers); if (server == NULL) { return NGX_ERROR; } *server = cscf; 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 *ports) { ngx_uint_t p, a; ngx_http_conf_port_t *port; ngx_http_conf_addr_t *addr; if (ports == NULL) { return NGX_OK; } port = ports->elts; for (p = 0; p < ports->nelts; p++) { ngx_sort(port[p].addrs.elts, (size_t) port[p].addrs.nelts, sizeof(ngx_http_conf_addr_t), ngx_http_cmp_conf_addrs); /* * check whether all name-based servers have the same * configuration as a default server for given address:port */ addr = port[p].addrs.elts; for (a = 0; a < port[p].addrs.nelts; a++) { if (addr[a].servers.nelts > 1 #if (NGX_PCRE) || addr[a].default_server->captures #endif ) { if (ngx_http_server_names(cf, cmcf, &addr[a]) != NGX_OK) { return NGX_ERROR; } } } if (ngx_http_init_listening(cf, &port[p]) != NGX_OK) { return NGX_ERROR; } } return NGX_OK; } static ngx_int_t ngx_http_server_names(ngx_conf_t *cf, ngx_http_core_main_conf_t *cmcf, ngx_http_conf_addr_t *addr) { ngx_int_t rc; ngx_uint_t n, s; ngx_hash_init_t hash; ngx_hash_keys_arrays_t ha; ngx_http_server_name_t *name; ngx_http_core_srv_conf_t **cscfp; #if (NGX_PCRE) ngx_uint_t regex, i; regex = 0; #endif ngx_memzero(&ha, sizeof(ngx_hash_keys_arrays_t)); ha.temp_pool = ngx_create_pool(NGX_DEFAULT_POOL_SIZE, 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; } cscfp = addr->servers.elts; for (s = 0; s < addr->servers.nelts; s++) { name = cscfp[s]->server_names.elts; for (n = 0; n < cscfp[s]->server_names.nelts; n++) { #if (NGX_PCRE) if (name[n].regex) { regex++; continue; } #endif rc = ngx_hash_add_key(&ha, &name[n].name, name[n].server, NGX_HASH_WILDCARD_KEY); if (rc == NGX_ERROR) { goto failed; } if (rc == NGX_DECLINED) { ngx_log_error(NGX_LOG_EMERG, cf->log, 0, "invalid server name or wildcard \"%V\" on %V", &name[n].name, &addr->opt.addr_text); goto failed; } if (rc == NGX_BUSY) { ngx_log_error(NGX_LOG_WARN, cf->log, 0, "conflicting server name \"%V\" on %V, ignored", &name[n].name, &addr->opt.addr_text); } } } 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 = &addr->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; } addr->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; } addr->wc_tail = (ngx_hash_wildcard_t *) hash.hash; } ngx_destroy_pool(ha.temp_pool); #if (NGX_PCRE) if (regex == 0) { return NGX_OK; } addr->nregex = regex; addr->regex = ngx_palloc(cf->pool, regex * sizeof(ngx_http_server_name_t)); if (addr->regex == NULL) { return NGX_ERROR; } i = 0; for (s = 0; s < addr->servers.nelts; s++) { name = cscfp[s]->server_names.elts; for (n = 0; n < cscfp[s]->server_names.nelts; n++) { if (name[n].regex) { addr->regex[i++] = name[n]; } } } #endif return NGX_OK; failed: ngx_destroy_pool(ha.temp_pool); return NGX_ERROR; } static ngx_int_t ngx_http_cmp_conf_addrs(const void *one, const void *two) { ngx_http_conf_addr_t *first, *second; first = (ngx_http_conf_addr_t *) one; second = (ngx_http_conf_addr_t *) two; if (first->opt.wildcard) { /* a wildcard address must be the last resort, shift it to the end */ return 1; } if (second->opt.wildcard) { /* a wildcard address must be the last resort, shift it to the end */ return -1; } if (first->opt.bind && !second->opt.bind) { /* shift explicit bind()ed addresses to the start */ return -1; } if (!first->opt.bind && second->opt.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_dns_strcmp(first->key.data, second->key.data); } static ngx_int_t ngx_http_init_listening(ngx_conf_t *cf, ngx_http_conf_port_t *port) { ngx_uint_t i, last, bind_wildcard; ngx_listening_t *ls; ngx_http_port_t *hport; ngx_http_conf_addr_t *addr; addr = port->addrs.elts; last = port->addrs.nelts; /* * If there is a binding to an "*:port" then we need to bind() to * the "*:port" only and ignore other implicit bindings. The bindings * have been already sorted: explicit bindings are on the start, then * implicit bindings go, and wildcard binding is in the end. */ if (addr[last - 1].opt.wildcard) { addr[last - 1].opt.bind = 1; bind_wildcard = 1; } else { bind_wildcard = 0; } i = 0; while (i < last) { if (bind_wildcard && !addr[i].opt.bind) { i++; continue; } ls = ngx_http_add_listening(cf, &addr[i]); if (ls == NULL) { return NGX_ERROR; } hport = ngx_pcalloc(cf->pool, sizeof(ngx_http_port_t)); if (hport == NULL) { return NGX_ERROR; } ls->servers = hport; hport->naddrs = i + 1; switch (ls->sockaddr->sa_family) { #if (NGX_HAVE_INET6) case AF_INET6: if (ngx_http_add_addrs6(cf, hport, addr) != NGX_OK) { return NGX_ERROR; } break; #endif default: /* AF_INET */ if (ngx_http_add_addrs(cf, hport, addr) != NGX_OK) { return NGX_ERROR; } break; } addr++; last--; } return NGX_OK; } static ngx_listening_t * ngx_http_add_listening(ngx_conf_t *cf, ngx_http_conf_addr_t *addr) { ngx_listening_t *ls; ngx_http_core_loc_conf_t *clcf; ngx_http_core_srv_conf_t *cscf; ls = ngx_create_listening(cf, addr->opt.sockaddr, addr->opt.socklen); if (ls == NULL) { return NULL; } ls->addr_ntop = 1; ls->handler = ngx_http_init_connection; cscf = addr->default_server; ls->pool_size = cscf->connection_pool_size; clcf = cscf->ctx->loc_conf[ngx_http_core_module.ctx_index]; ls->logp = clcf->error_log; ls->log.data = &ls->addr_text; ls->log.handler = ngx_accept_log_error; #if (NGX_WIN32) { ngx_iocp_conf_t *iocpcf = NULL; if (ngx_get_conf(cf->cycle->conf_ctx, ngx_events_module)) { iocpcf = ngx_event_get_conf(cf->cycle->conf_ctx, ngx_iocp_module); } if (iocpcf && iocpcf->acceptex_read) { ls->post_accept_buffer_size = cscf->client_header_buffer_size; } } #endif ls->type = addr->opt.type; ls->backlog = addr->opt.backlog; ls->rcvbuf = addr->opt.rcvbuf; ls->sndbuf = addr->opt.sndbuf; ls->keepalive = addr->opt.so_keepalive; #if (NGX_HAVE_KEEPALIVE_TUNABLE) ls->keepidle = addr->opt.tcp_keepidle; ls->keepintvl = addr->opt.tcp_keepintvl; ls->keepcnt = addr->opt.tcp_keepcnt; #endif #if (NGX_HAVE_DEFERRED_ACCEPT && defined SO_ACCEPTFILTER) ls->accept_filter = addr->opt.accept_filter; #endif #if (NGX_HAVE_DEFERRED_ACCEPT && defined TCP_DEFER_ACCEPT) ls->deferred_accept = addr->opt.deferred_accept; #endif #if (NGX_HAVE_INET6) ls->ipv6only = addr->opt.ipv6only; #endif #if (NGX_HAVE_SETFIB) ls->setfib = addr->opt.setfib; #endif #if (NGX_HAVE_TCP_FASTOPEN) ls->fastopen = addr->opt.fastopen; #endif #if (NGX_HAVE_REUSEPORT) ls->reuseport = addr->opt.reuseport; #endif ls->wildcard = addr->opt.wildcard; #if (NGX_HTTP_V3) ls->quic = addr->opt.quic; if (ls->quic) { ngx_rbtree_init(&ls->rbtree, &ls->sentinel, ngx_quic_rbtree_insert_value); } #endif return ls; } static ngx_int_t ngx_http_add_addrs(ngx_conf_t *cf, ngx_http_port_t *hport, ngx_http_conf_addr_t *addr) { ngx_uint_t i; ngx_http_in_addr_t *addrs; struct sockaddr_in *sin; ngx_http_virtual_names_t *vn; hport->addrs = ngx_pcalloc(cf->pool, hport->naddrs * sizeof(ngx_http_in_addr_t)); if (hport->addrs == NULL) { return NGX_ERROR; } addrs = hport->addrs; for (i = 0; i < hport->naddrs; i++) { sin = (struct sockaddr_in *) addr[i].opt.sockaddr; addrs[i].addr = sin->sin_addr.s_addr; addrs[i].conf.default_server = addr[i].default_server; #if (NGX_HTTP_SSL) addrs[i].conf.ssl = addr[i].opt.ssl; #endif #if (NGX_HTTP_V2) addrs[i].conf.http2 = addr[i].opt.http2; #endif #if (NGX_HTTP_V3) addrs[i].conf.http3 = addr[i].opt.http3; addrs[i].conf.quic = addr[i].opt.quic; #endif addrs[i].conf.proxy_protocol = addr[i].opt.proxy_protocol; if (addr[i].hash.buckets == NULL && (addr[i].wc_head == NULL || addr[i].wc_head->hash.buckets == NULL) && (addr[i].wc_tail == NULL || addr[i].wc_tail->hash.buckets == NULL) #if (NGX_PCRE) && addr[i].nregex == 0 #endif ) { continue; } vn = ngx_palloc(cf->pool, sizeof(ngx_http_virtual_names_t)); if (vn == NULL) { return NGX_ERROR; } addrs[i].conf.virtual_names = vn; vn->names.hash = addr[i].hash; vn->names.wc_head = addr[i].wc_head; vn->names.wc_tail = addr[i].wc_tail; #if (NGX_PCRE) vn->nregex = addr[i].nregex; vn->regex = addr[i].regex; #endif } return NGX_OK; } #if (NGX_HAVE_INET6) static ngx_int_t ngx_http_add_addrs6(ngx_conf_t *cf, ngx_http_port_t *hport, ngx_http_conf_addr_t *addr) { ngx_uint_t i; ngx_http_in6_addr_t *addrs6; struct sockaddr_in6 *sin6; ngx_http_virtual_names_t *vn; hport->addrs = ngx_pcalloc(cf->pool, hport->naddrs * sizeof(ngx_http_in6_addr_t)); if (hport->addrs == NULL) { return NGX_ERROR; } addrs6 = hport->addrs; for (i = 0; i < hport->naddrs; i++) { sin6 = (struct sockaddr_in6 *) addr[i].opt.sockaddr; addrs6[i].addr6 = sin6->sin6_addr; addrs6[i].conf.default_server = addr[i].default_server; #if (NGX_HTTP_SSL) addrs6[i].conf.ssl = addr[i].opt.ssl; #endif #if (NGX_HTTP_V2) addrs6[i].conf.http2 = addr[i].opt.http2; #endif #if (NGX_HTTP_V3) addrs6[i].conf.http3 = addr[i].opt.http3; addrs6[i].conf.quic = addr[i].opt.quic; #endif addrs6[i].conf.proxy_protocol = addr[i].opt.proxy_protocol; if (addr[i].hash.buckets == NULL && (addr[i].wc_head == NULL || addr[i].wc_head->hash.buckets == NULL) && (addr[i].wc_tail == NULL || addr[i].wc_tail->hash.buckets == NULL) #if (NGX_PCRE) && addr[i].nregex == 0 #endif ) { continue; } vn = ngx_palloc(cf->pool, sizeof(ngx_http_virtual_names_t)); if (vn == NULL) { return NGX_ERROR; } addrs6[i].conf.virtual_names = vn; vn->names.hash = addr[i].hash; vn->names.wc_head = addr[i].wc_head; vn->names.wc_tail = addr[i].wc_tail; #if (NGX_PCRE) vn->nregex = addr[i].nregex; vn->regex = addr[i].regex; #endif } return NGX_OK; } #endif char * ngx_http_types_slot(ngx_conf_t *cf, ngx_command_t *cmd, void *conf) { char *p = conf; ngx_array_t **types; ngx_str_t *value, *default_type; ngx_uint_t i, n, hash; ngx_hash_key_t *type; types = (ngx_array_t **) (p + cmd->offset); if (*types == (void *) -1) { return NGX_CONF_OK; } default_type = cmd->post; if (*types == NULL) { *types = ngx_array_create(cf->temp_pool, 1, sizeof(ngx_hash_key_t)); if (*types == NULL) { return NGX_CONF_ERROR; } if (default_type) { type = ngx_array_push(*types); if (type == NULL) { return NGX_CONF_ERROR; } type->key = *default_type; type->key_hash = ngx_hash_key(default_type->data, default_type->len); type->value = (void *) 4; } } value = cf->args->elts; for (i = 1; i < cf->args->nelts; i++) { if (value[i].len == 1 && value[i].data[0] == '*') { *types = (void *) -1; return NGX_CONF_OK; } hash = ngx_hash_strlow(value[i].data, value[i].data, value[i].len); value[i].data[value[i].len] = '\0'; type = (*types)->elts; for (n = 0; n < (*types)->nelts; n++) { if (ngx_strcmp(value[i].data, type[n].key.data) == 0) { ngx_conf_log_error(NGX_LOG_WARN, cf, 0, "duplicate MIME type \"%V\"", &value[i]); goto next; } } type = ngx_array_push(*types); if (type == NULL) { return NGX_CONF_ERROR; } type->key = value[i]; type->key_hash = hash; type->value = (void *) 4; next: continue; } return NGX_CONF_OK; } char * ngx_http_merge_types(ngx_conf_t *cf, ngx_array_t **keys, ngx_hash_t *types_hash, ngx_array_t **prev_keys, ngx_hash_t *prev_types_hash, ngx_str_t *default_types) { ngx_hash_init_t hash; if (*keys) { if (*keys == (void *) -1) { return NGX_CONF_OK; } hash.hash = types_hash; hash.key = NULL; hash.max_size = 2048; hash.bucket_size = 64; hash.name = "test_types_hash"; hash.pool = cf->pool; hash.temp_pool = NULL; if (ngx_hash_init(&hash, (*keys)->elts, (*keys)->nelts) != NGX_OK) { return NGX_CONF_ERROR; } return NGX_CONF_OK; } if (prev_types_hash->buckets == NULL) { if (*prev_keys == NULL) { if (ngx_http_set_default_types(cf, prev_keys, default_types) != NGX_OK) { return NGX_CONF_ERROR; } } else if (*prev_keys == (void *) -1) { *keys = *prev_keys; return NGX_CONF_OK; } hash.hash = prev_types_hash; hash.key = NULL; hash.max_size = 2048; hash.bucket_size = 64; hash.name = "test_types_hash"; hash.pool = cf->pool; hash.temp_pool = NULL; if (ngx_hash_init(&hash, (*prev_keys)->elts, (*prev_keys)->nelts) != NGX_OK) { return NGX_CONF_ERROR; } } *types_hash = *prev_types_hash; return NGX_CONF_OK; } ngx_int_t ngx_http_set_default_types(ngx_conf_t *cf, ngx_array_t **types, ngx_str_t *default_type) { ngx_hash_key_t *type; *types = ngx_array_create(cf->temp_pool, 1, sizeof(ngx_hash_key_t)); if (*types == NULL) { return NGX_ERROR; } while (default_type->len) { type = ngx_array_push(*types); if (type == NULL) { return NGX_ERROR; } type->key = *default_type; type->key_hash = ngx_hash_key(default_type->data, default_type->len); type->value = (void *) 4; default_type++; } return NGX_OK; }