| |
| /* |
| * Copyright (C) Igor Sysoev |
| * Copyright (C) Nginx, Inc. |
| */ |
| |
| |
| #include <ngx_config.h> |
| #include <ngx_core.h> |
| #include <ngx_http.h> |
| #include <nginx.h> |
| |
| |
| static ngx_http_variable_t *ngx_http_add_prefix_variable(ngx_conf_t *cf, |
| ngx_str_t *name, ngx_uint_t flags); |
| |
| static ngx_int_t ngx_http_variable_request(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data); |
| #if 0 |
| static void ngx_http_variable_request_set(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data); |
| #endif |
| static ngx_int_t ngx_http_variable_request_get_size(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data); |
| static ngx_int_t ngx_http_variable_header(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data); |
| |
| static ngx_int_t ngx_http_variable_cookies(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data); |
| static ngx_int_t ngx_http_variable_headers(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data); |
| static ngx_int_t ngx_http_variable_headers_internal(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data, u_char sep); |
| |
| static ngx_int_t ngx_http_variable_unknown_header_in(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data); |
| static ngx_int_t ngx_http_variable_unknown_header_out(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data); |
| static ngx_int_t ngx_http_variable_unknown_trailer_out(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data); |
| static ngx_int_t ngx_http_variable_request_line(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data); |
| static ngx_int_t ngx_http_variable_cookie(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data); |
| static ngx_int_t ngx_http_variable_argument(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data); |
| #if (NGX_HAVE_TCP_INFO) |
| static ngx_int_t ngx_http_variable_tcpinfo(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data); |
| #endif |
| |
| static ngx_int_t ngx_http_variable_content_length(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data); |
| static ngx_int_t ngx_http_variable_host(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data); |
| static ngx_int_t ngx_http_variable_binary_remote_addr(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data); |
| static ngx_int_t ngx_http_variable_remote_addr(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data); |
| static ngx_int_t ngx_http_variable_remote_port(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data); |
| static ngx_int_t ngx_http_variable_proxy_protocol_addr(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data); |
| static ngx_int_t ngx_http_variable_proxy_protocol_port(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data); |
| static ngx_int_t ngx_http_variable_server_addr(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data); |
| static ngx_int_t ngx_http_variable_server_port(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data); |
| static ngx_int_t ngx_http_variable_scheme(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data); |
| static ngx_int_t ngx_http_variable_https(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data); |
| static void ngx_http_variable_set_args(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data); |
| static ngx_int_t ngx_http_variable_is_args(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data); |
| static ngx_int_t ngx_http_variable_document_root(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data); |
| static ngx_int_t ngx_http_variable_realpath_root(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data); |
| static ngx_int_t ngx_http_variable_request_filename(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data); |
| static ngx_int_t ngx_http_variable_server_name(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data); |
| static ngx_int_t ngx_http_variable_request_method(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data); |
| static ngx_int_t ngx_http_variable_remote_user(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data); |
| static ngx_int_t ngx_http_variable_bytes_sent(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data); |
| static ngx_int_t ngx_http_variable_body_bytes_sent(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data); |
| static ngx_int_t ngx_http_variable_pipe(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data); |
| static ngx_int_t ngx_http_variable_request_completion(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data); |
| static ngx_int_t ngx_http_variable_request_body(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data); |
| static ngx_int_t ngx_http_variable_request_body_file(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data); |
| static ngx_int_t ngx_http_variable_request_length(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data); |
| static ngx_int_t ngx_http_variable_request_time(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data); |
| static ngx_int_t ngx_http_variable_request_id(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data); |
| static ngx_int_t ngx_http_variable_status(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data); |
| |
| static ngx_int_t ngx_http_variable_sent_content_type(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data); |
| static ngx_int_t ngx_http_variable_sent_content_length(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data); |
| static ngx_int_t ngx_http_variable_sent_location(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data); |
| static ngx_int_t ngx_http_variable_sent_last_modified(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data); |
| static ngx_int_t ngx_http_variable_sent_connection(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data); |
| static ngx_int_t ngx_http_variable_sent_keep_alive(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data); |
| static ngx_int_t ngx_http_variable_sent_transfer_encoding(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data); |
| static void ngx_http_variable_set_limit_rate(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data); |
| |
| static ngx_int_t ngx_http_variable_connection(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data); |
| static ngx_int_t ngx_http_variable_connection_requests(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data); |
| static ngx_int_t ngx_http_variable_connection_time(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data); |
| |
| static ngx_int_t ngx_http_variable_nginx_version(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data); |
| static ngx_int_t ngx_http_variable_hostname(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data); |
| static ngx_int_t ngx_http_variable_pid(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data); |
| static ngx_int_t ngx_http_variable_msec(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data); |
| static ngx_int_t ngx_http_variable_time_iso8601(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data); |
| static ngx_int_t ngx_http_variable_time_local(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data); |
| |
| /* |
| * TODO: |
| * Apache CGI: AUTH_TYPE, PATH_INFO (null), PATH_TRANSLATED |
| * REMOTE_HOST (null), REMOTE_IDENT (null), |
| * SERVER_SOFTWARE |
| * |
| * Apache SSI: DOCUMENT_NAME, LAST_MODIFIED, USER_NAME (file owner) |
| */ |
| |
| /* |
| * the $http_host, $http_user_agent, $http_referer, and $http_via |
| * variables may be handled by generic |
| * ngx_http_variable_unknown_header_in(), but for performance reasons |
| * they are handled using dedicated entries |
| */ |
| |
| static ngx_http_variable_t ngx_http_core_variables[] = { |
| |
| { ngx_string("http_host"), NULL, ngx_http_variable_header, |
| offsetof(ngx_http_request_t, headers_in.host), 0, 0 }, |
| |
| { ngx_string("http_user_agent"), NULL, ngx_http_variable_header, |
| offsetof(ngx_http_request_t, headers_in.user_agent), 0, 0 }, |
| |
| { ngx_string("http_referer"), NULL, ngx_http_variable_header, |
| offsetof(ngx_http_request_t, headers_in.referer), 0, 0 }, |
| |
| #if (NGX_HTTP_GZIP) |
| { ngx_string("http_via"), NULL, ngx_http_variable_header, |
| offsetof(ngx_http_request_t, headers_in.via), 0, 0 }, |
| #endif |
| |
| #if (NGX_HTTP_X_FORWARDED_FOR) |
| { ngx_string("http_x_forwarded_for"), NULL, ngx_http_variable_headers, |
| offsetof(ngx_http_request_t, headers_in.x_forwarded_for), 0, 0 }, |
| #endif |
| |
| { ngx_string("http_cookie"), NULL, ngx_http_variable_cookies, |
| offsetof(ngx_http_request_t, headers_in.cookies), 0, 0 }, |
| |
| { ngx_string("content_length"), NULL, ngx_http_variable_content_length, |
| 0, 0, 0 }, |
| |
| { ngx_string("content_type"), NULL, ngx_http_variable_header, |
| offsetof(ngx_http_request_t, headers_in.content_type), 0, 0 }, |
| |
| { ngx_string("host"), NULL, ngx_http_variable_host, 0, 0, 0 }, |
| |
| { ngx_string("binary_remote_addr"), NULL, |
| ngx_http_variable_binary_remote_addr, 0, 0, 0 }, |
| |
| { ngx_string("remote_addr"), NULL, ngx_http_variable_remote_addr, 0, 0, 0 }, |
| |
| { ngx_string("remote_port"), NULL, ngx_http_variable_remote_port, 0, 0, 0 }, |
| |
| { ngx_string("proxy_protocol_addr"), NULL, |
| ngx_http_variable_proxy_protocol_addr, |
| offsetof(ngx_proxy_protocol_t, src_addr), 0, 0 }, |
| |
| { ngx_string("proxy_protocol_port"), NULL, |
| ngx_http_variable_proxy_protocol_port, |
| offsetof(ngx_proxy_protocol_t, src_port), 0, 0 }, |
| |
| { ngx_string("proxy_protocol_server_addr"), NULL, |
| ngx_http_variable_proxy_protocol_addr, |
| offsetof(ngx_proxy_protocol_t, dst_addr), 0, 0 }, |
| |
| { ngx_string("proxy_protocol_server_port"), NULL, |
| ngx_http_variable_proxy_protocol_port, |
| offsetof(ngx_proxy_protocol_t, dst_port), 0, 0 }, |
| |
| { ngx_string("server_addr"), NULL, ngx_http_variable_server_addr, 0, 0, 0 }, |
| |
| { ngx_string("server_port"), NULL, ngx_http_variable_server_port, 0, 0, 0 }, |
| |
| { ngx_string("server_protocol"), NULL, ngx_http_variable_request, |
| offsetof(ngx_http_request_t, http_protocol), 0, 0 }, |
| |
| { ngx_string("scheme"), NULL, ngx_http_variable_scheme, 0, 0, 0 }, |
| |
| { ngx_string("https"), NULL, ngx_http_variable_https, 0, 0, 0 }, |
| |
| { ngx_string("request_uri"), NULL, ngx_http_variable_request, |
| offsetof(ngx_http_request_t, unparsed_uri), 0, 0 }, |
| |
| { ngx_string("uri"), NULL, ngx_http_variable_request, |
| offsetof(ngx_http_request_t, uri), |
| NGX_HTTP_VAR_NOCACHEABLE, 0 }, |
| |
| { ngx_string("document_uri"), NULL, ngx_http_variable_request, |
| offsetof(ngx_http_request_t, uri), |
| NGX_HTTP_VAR_NOCACHEABLE, 0 }, |
| |
| { ngx_string("request"), NULL, ngx_http_variable_request_line, 0, 0, 0 }, |
| |
| { ngx_string("document_root"), NULL, |
| ngx_http_variable_document_root, 0, NGX_HTTP_VAR_NOCACHEABLE, 0 }, |
| |
| { ngx_string("realpath_root"), NULL, |
| ngx_http_variable_realpath_root, 0, NGX_HTTP_VAR_NOCACHEABLE, 0 }, |
| |
| { ngx_string("query_string"), NULL, ngx_http_variable_request, |
| offsetof(ngx_http_request_t, args), |
| NGX_HTTP_VAR_NOCACHEABLE, 0 }, |
| |
| { ngx_string("args"), |
| ngx_http_variable_set_args, |
| ngx_http_variable_request, |
| offsetof(ngx_http_request_t, args), |
| NGX_HTTP_VAR_CHANGEABLE|NGX_HTTP_VAR_NOCACHEABLE, 0 }, |
| |
| { ngx_string("is_args"), NULL, ngx_http_variable_is_args, |
| 0, NGX_HTTP_VAR_NOCACHEABLE, 0 }, |
| |
| { ngx_string("request_filename"), NULL, |
| ngx_http_variable_request_filename, 0, |
| NGX_HTTP_VAR_NOCACHEABLE, 0 }, |
| |
| { ngx_string("server_name"), NULL, ngx_http_variable_server_name, 0, 0, 0 }, |
| |
| { ngx_string("request_method"), NULL, |
| ngx_http_variable_request_method, 0, |
| NGX_HTTP_VAR_NOCACHEABLE, 0 }, |
| |
| { ngx_string("remote_user"), NULL, ngx_http_variable_remote_user, 0, 0, 0 }, |
| |
| { ngx_string("bytes_sent"), NULL, ngx_http_variable_bytes_sent, |
| 0, 0, 0 }, |
| |
| { ngx_string("body_bytes_sent"), NULL, ngx_http_variable_body_bytes_sent, |
| 0, 0, 0 }, |
| |
| { ngx_string("pipe"), NULL, ngx_http_variable_pipe, |
| 0, 0, 0 }, |
| |
| { ngx_string("request_completion"), NULL, |
| ngx_http_variable_request_completion, |
| 0, 0, 0 }, |
| |
| { ngx_string("request_body"), NULL, |
| ngx_http_variable_request_body, |
| 0, 0, 0 }, |
| |
| { ngx_string("request_body_file"), NULL, |
| ngx_http_variable_request_body_file, |
| 0, 0, 0 }, |
| |
| { ngx_string("request_length"), NULL, ngx_http_variable_request_length, |
| 0, NGX_HTTP_VAR_NOCACHEABLE, 0 }, |
| |
| { ngx_string("request_time"), NULL, ngx_http_variable_request_time, |
| 0, NGX_HTTP_VAR_NOCACHEABLE, 0 }, |
| |
| { ngx_string("request_id"), NULL, |
| ngx_http_variable_request_id, |
| 0, 0, 0 }, |
| |
| { ngx_string("status"), NULL, |
| ngx_http_variable_status, 0, |
| NGX_HTTP_VAR_NOCACHEABLE, 0 }, |
| |
| { ngx_string("sent_http_content_type"), NULL, |
| ngx_http_variable_sent_content_type, 0, 0, 0 }, |
| |
| { ngx_string("sent_http_content_length"), NULL, |
| ngx_http_variable_sent_content_length, 0, 0, 0 }, |
| |
| { ngx_string("sent_http_location"), NULL, |
| ngx_http_variable_sent_location, 0, 0, 0 }, |
| |
| { ngx_string("sent_http_last_modified"), NULL, |
| ngx_http_variable_sent_last_modified, 0, 0, 0 }, |
| |
| { ngx_string("sent_http_connection"), NULL, |
| ngx_http_variable_sent_connection, 0, 0, 0 }, |
| |
| { ngx_string("sent_http_keep_alive"), NULL, |
| ngx_http_variable_sent_keep_alive, 0, 0, 0 }, |
| |
| { ngx_string("sent_http_transfer_encoding"), NULL, |
| ngx_http_variable_sent_transfer_encoding, 0, 0, 0 }, |
| |
| { ngx_string("sent_http_cache_control"), NULL, ngx_http_variable_headers, |
| offsetof(ngx_http_request_t, headers_out.cache_control), 0, 0 }, |
| |
| { ngx_string("sent_http_link"), NULL, ngx_http_variable_headers, |
| offsetof(ngx_http_request_t, headers_out.link), 0, 0 }, |
| |
| { ngx_string("limit_rate"), ngx_http_variable_set_limit_rate, |
| ngx_http_variable_request_get_size, |
| offsetof(ngx_http_request_t, limit_rate), |
| NGX_HTTP_VAR_CHANGEABLE|NGX_HTTP_VAR_NOCACHEABLE, 0 }, |
| |
| { ngx_string("connection"), NULL, |
| ngx_http_variable_connection, 0, 0, 0 }, |
| |
| { ngx_string("connection_requests"), NULL, |
| ngx_http_variable_connection_requests, 0, 0, 0 }, |
| |
| { ngx_string("connection_time"), NULL, ngx_http_variable_connection_time, |
| 0, NGX_HTTP_VAR_NOCACHEABLE, 0 }, |
| |
| { ngx_string("nginx_version"), NULL, ngx_http_variable_nginx_version, |
| 0, 0, 0 }, |
| |
| { ngx_string("hostname"), NULL, ngx_http_variable_hostname, |
| 0, 0, 0 }, |
| |
| { ngx_string("pid"), NULL, ngx_http_variable_pid, |
| 0, 0, 0 }, |
| |
| { ngx_string("msec"), NULL, ngx_http_variable_msec, |
| 0, NGX_HTTP_VAR_NOCACHEABLE, 0 }, |
| |
| { ngx_string("time_iso8601"), NULL, ngx_http_variable_time_iso8601, |
| 0, NGX_HTTP_VAR_NOCACHEABLE, 0 }, |
| |
| { ngx_string("time_local"), NULL, ngx_http_variable_time_local, |
| 0, NGX_HTTP_VAR_NOCACHEABLE, 0 }, |
| |
| #if (NGX_HAVE_TCP_INFO) |
| { ngx_string("tcpinfo_rtt"), NULL, ngx_http_variable_tcpinfo, |
| 0, NGX_HTTP_VAR_NOCACHEABLE, 0 }, |
| |
| { ngx_string("tcpinfo_rttvar"), NULL, ngx_http_variable_tcpinfo, |
| 1, NGX_HTTP_VAR_NOCACHEABLE, 0 }, |
| |
| { ngx_string("tcpinfo_snd_cwnd"), NULL, ngx_http_variable_tcpinfo, |
| 2, NGX_HTTP_VAR_NOCACHEABLE, 0 }, |
| |
| { ngx_string("tcpinfo_rcv_space"), NULL, ngx_http_variable_tcpinfo, |
| 3, NGX_HTTP_VAR_NOCACHEABLE, 0 }, |
| #endif |
| |
| { ngx_string("http_"), NULL, ngx_http_variable_unknown_header_in, |
| 0, NGX_HTTP_VAR_PREFIX, 0 }, |
| |
| { ngx_string("sent_http_"), NULL, ngx_http_variable_unknown_header_out, |
| 0, NGX_HTTP_VAR_PREFIX, 0 }, |
| |
| { ngx_string("sent_trailer_"), NULL, ngx_http_variable_unknown_trailer_out, |
| 0, NGX_HTTP_VAR_PREFIX, 0 }, |
| |
| { ngx_string("cookie_"), NULL, ngx_http_variable_cookie, |
| 0, NGX_HTTP_VAR_PREFIX, 0 }, |
| |
| { ngx_string("arg_"), NULL, ngx_http_variable_argument, |
| 0, NGX_HTTP_VAR_NOCACHEABLE|NGX_HTTP_VAR_PREFIX, 0 }, |
| |
| ngx_http_null_variable |
| }; |
| |
| |
| ngx_http_variable_value_t ngx_http_variable_null_value = |
| ngx_http_variable(""); |
| ngx_http_variable_value_t ngx_http_variable_true_value = |
| ngx_http_variable("1"); |
| |
| |
| static ngx_uint_t ngx_http_variable_depth = 100; |
| |
| |
| ngx_http_variable_t * |
| ngx_http_add_variable(ngx_conf_t *cf, ngx_str_t *name, ngx_uint_t flags) |
| { |
| ngx_int_t rc; |
| ngx_uint_t i; |
| ngx_hash_key_t *key; |
| ngx_http_variable_t *v; |
| ngx_http_core_main_conf_t *cmcf; |
| |
| if (name->len == 0) { |
| ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
| "invalid variable name \"$\""); |
| return NULL; |
| } |
| |
| if (flags & NGX_HTTP_VAR_PREFIX) { |
| return ngx_http_add_prefix_variable(cf, name, flags); |
| } |
| |
| cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module); |
| |
| key = cmcf->variables_keys->keys.elts; |
| for (i = 0; i < cmcf->variables_keys->keys.nelts; i++) { |
| if (name->len != key[i].key.len |
| || ngx_strncasecmp(name->data, key[i].key.data, name->len) != 0) |
| { |
| continue; |
| } |
| |
| v = key[i].value; |
| |
| if (!(v->flags & NGX_HTTP_VAR_CHANGEABLE)) { |
| ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
| "the duplicate \"%V\" variable", name); |
| return NULL; |
| } |
| |
| if (!(flags & NGX_HTTP_VAR_WEAK)) { |
| v->flags &= ~NGX_HTTP_VAR_WEAK; |
| } |
| |
| return v; |
| } |
| |
| v = ngx_palloc(cf->pool, sizeof(ngx_http_variable_t)); |
| if (v == NULL) { |
| return NULL; |
| } |
| |
| v->name.len = name->len; |
| v->name.data = ngx_pnalloc(cf->pool, name->len); |
| if (v->name.data == NULL) { |
| return NULL; |
| } |
| |
| ngx_strlow(v->name.data, name->data, name->len); |
| |
| v->set_handler = NULL; |
| v->get_handler = NULL; |
| v->data = 0; |
| v->flags = flags; |
| v->index = 0; |
| |
| rc = ngx_hash_add_key(cmcf->variables_keys, &v->name, v, 0); |
| |
| if (rc == NGX_ERROR) { |
| return NULL; |
| } |
| |
| if (rc == NGX_BUSY) { |
| ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
| "conflicting variable name \"%V\"", name); |
| return NULL; |
| } |
| |
| return v; |
| } |
| |
| |
| static ngx_http_variable_t * |
| ngx_http_add_prefix_variable(ngx_conf_t *cf, ngx_str_t *name, ngx_uint_t flags) |
| { |
| ngx_uint_t i; |
| ngx_http_variable_t *v; |
| ngx_http_core_main_conf_t *cmcf; |
| |
| cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module); |
| |
| v = cmcf->prefix_variables.elts; |
| for (i = 0; i < cmcf->prefix_variables.nelts; i++) { |
| if (name->len != v[i].name.len |
| || ngx_strncasecmp(name->data, v[i].name.data, name->len) != 0) |
| { |
| continue; |
| } |
| |
| v = &v[i]; |
| |
| if (!(v->flags & NGX_HTTP_VAR_CHANGEABLE)) { |
| ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
| "the duplicate \"%V\" variable", name); |
| return NULL; |
| } |
| |
| if (!(flags & NGX_HTTP_VAR_WEAK)) { |
| v->flags &= ~NGX_HTTP_VAR_WEAK; |
| } |
| |
| return v; |
| } |
| |
| v = ngx_array_push(&cmcf->prefix_variables); |
| if (v == NULL) { |
| return NULL; |
| } |
| |
| v->name.len = name->len; |
| v->name.data = ngx_pnalloc(cf->pool, name->len); |
| if (v->name.data == NULL) { |
| return NULL; |
| } |
| |
| ngx_strlow(v->name.data, name->data, name->len); |
| |
| v->set_handler = NULL; |
| v->get_handler = NULL; |
| v->data = 0; |
| v->flags = flags; |
| v->index = 0; |
| |
| return v; |
| } |
| |
| |
| ngx_int_t |
| ngx_http_get_variable_index(ngx_conf_t *cf, ngx_str_t *name) |
| { |
| ngx_uint_t i; |
| ngx_http_variable_t *v; |
| ngx_http_core_main_conf_t *cmcf; |
| |
| if (name->len == 0) { |
| ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, |
| "invalid variable name \"$\""); |
| return NGX_ERROR; |
| } |
| |
| cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module); |
| |
| v = cmcf->variables.elts; |
| |
| if (v == NULL) { |
| if (ngx_array_init(&cmcf->variables, cf->pool, 4, |
| sizeof(ngx_http_variable_t)) |
| != NGX_OK) |
| { |
| return NGX_ERROR; |
| } |
| |
| } else { |
| for (i = 0; i < cmcf->variables.nelts; i++) { |
| if (name->len != v[i].name.len |
| || ngx_strncasecmp(name->data, v[i].name.data, name->len) != 0) |
| { |
| continue; |
| } |
| |
| return i; |
| } |
| } |
| |
| v = ngx_array_push(&cmcf->variables); |
| if (v == NULL) { |
| return NGX_ERROR; |
| } |
| |
| v->name.len = name->len; |
| v->name.data = ngx_pnalloc(cf->pool, name->len); |
| if (v->name.data == NULL) { |
| return NGX_ERROR; |
| } |
| |
| ngx_strlow(v->name.data, name->data, name->len); |
| |
| v->set_handler = NULL; |
| v->get_handler = NULL; |
| v->data = 0; |
| v->flags = 0; |
| v->index = cmcf->variables.nelts - 1; |
| |
| return v->index; |
| } |
| |
| |
| ngx_http_variable_value_t * |
| ngx_http_get_indexed_variable(ngx_http_request_t *r, ngx_uint_t index) |
| { |
| ngx_http_variable_t *v; |
| ngx_http_core_main_conf_t *cmcf; |
| |
| cmcf = ngx_http_get_module_main_conf(r, ngx_http_core_module); |
| |
| if (cmcf->variables.nelts <= index) { |
| ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0, |
| "unknown variable index: %ui", index); |
| return NULL; |
| } |
| |
| if (r->variables[index].not_found || r->variables[index].valid) { |
| return &r->variables[index]; |
| } |
| |
| v = cmcf->variables.elts; |
| |
| if (ngx_http_variable_depth == 0) { |
| ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, |
| "cycle while evaluating variable \"%V\"", |
| &v[index].name); |
| return NULL; |
| } |
| |
| ngx_http_variable_depth--; |
| |
| if (v[index].get_handler(r, &r->variables[index], v[index].data) |
| == NGX_OK) |
| { |
| ngx_http_variable_depth++; |
| |
| if (v[index].flags & NGX_HTTP_VAR_NOCACHEABLE) { |
| r->variables[index].no_cacheable = 1; |
| } |
| |
| return &r->variables[index]; |
| } |
| |
| ngx_http_variable_depth++; |
| |
| r->variables[index].valid = 0; |
| r->variables[index].not_found = 1; |
| |
| return NULL; |
| } |
| |
| |
| ngx_http_variable_value_t * |
| ngx_http_get_flushed_variable(ngx_http_request_t *r, ngx_uint_t index) |
| { |
| ngx_http_variable_value_t *v; |
| |
| v = &r->variables[index]; |
| |
| if (v->valid || v->not_found) { |
| if (!v->no_cacheable) { |
| return v; |
| } |
| |
| v->valid = 0; |
| v->not_found = 0; |
| } |
| |
| return ngx_http_get_indexed_variable(r, index); |
| } |
| |
| |
| ngx_http_variable_value_t * |
| ngx_http_get_variable(ngx_http_request_t *r, ngx_str_t *name, ngx_uint_t key) |
| { |
| size_t len; |
| ngx_uint_t i, n; |
| ngx_http_variable_t *v; |
| ngx_http_variable_value_t *vv; |
| ngx_http_core_main_conf_t *cmcf; |
| |
| cmcf = ngx_http_get_module_main_conf(r, ngx_http_core_module); |
| |
| v = ngx_hash_find(&cmcf->variables_hash, key, name->data, name->len); |
| |
| if (v) { |
| if (v->flags & NGX_HTTP_VAR_INDEXED) { |
| return ngx_http_get_flushed_variable(r, v->index); |
| } |
| |
| if (ngx_http_variable_depth == 0) { |
| ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, |
| "cycle while evaluating variable \"%V\"", name); |
| return NULL; |
| } |
| |
| ngx_http_variable_depth--; |
| |
| vv = ngx_palloc(r->pool, sizeof(ngx_http_variable_value_t)); |
| |
| if (vv && v->get_handler(r, vv, v->data) == NGX_OK) { |
| ngx_http_variable_depth++; |
| return vv; |
| } |
| |
| ngx_http_variable_depth++; |
| return NULL; |
| } |
| |
| vv = ngx_palloc(r->pool, sizeof(ngx_http_variable_value_t)); |
| if (vv == NULL) { |
| return NULL; |
| } |
| |
| len = 0; |
| |
| v = cmcf->prefix_variables.elts; |
| n = cmcf->prefix_variables.nelts; |
| |
| for (i = 0; i < cmcf->prefix_variables.nelts; i++) { |
| if (name->len >= v[i].name.len && name->len > len |
| && ngx_strncmp(name->data, v[i].name.data, v[i].name.len) == 0) |
| { |
| len = v[i].name.len; |
| n = i; |
| } |
| } |
| |
| if (n != cmcf->prefix_variables.nelts) { |
| if (v[n].get_handler(r, vv, (uintptr_t) name) == NGX_OK) { |
| return vv; |
| } |
| |
| return NULL; |
| } |
| |
| vv->not_found = 1; |
| |
| return vv; |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_variable_request(ngx_http_request_t *r, ngx_http_variable_value_t *v, |
| uintptr_t data) |
| { |
| ngx_str_t *s; |
| |
| s = (ngx_str_t *) ((char *) r + data); |
| |
| if (s->data) { |
| v->len = s->len; |
| v->valid = 1; |
| v->no_cacheable = 0; |
| v->not_found = 0; |
| v->data = s->data; |
| |
| } else { |
| v->not_found = 1; |
| } |
| |
| return NGX_OK; |
| } |
| |
| |
| #if 0 |
| |
| static void |
| ngx_http_variable_request_set(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data) |
| { |
| ngx_str_t *s; |
| |
| s = (ngx_str_t *) ((char *) r + data); |
| |
| s->len = v->len; |
| s->data = v->data; |
| } |
| |
| #endif |
| |
| |
| static ngx_int_t |
| ngx_http_variable_request_get_size(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data) |
| { |
| size_t *sp; |
| |
| sp = (size_t *) ((char *) r + data); |
| |
| v->data = ngx_pnalloc(r->pool, NGX_SIZE_T_LEN); |
| if (v->data == NULL) { |
| return NGX_ERROR; |
| } |
| |
| v->len = ngx_sprintf(v->data, "%uz", *sp) - v->data; |
| v->valid = 1; |
| v->no_cacheable = 0; |
| v->not_found = 0; |
| |
| return NGX_OK; |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_variable_header(ngx_http_request_t *r, ngx_http_variable_value_t *v, |
| uintptr_t data) |
| { |
| ngx_table_elt_t *h; |
| |
| h = *(ngx_table_elt_t **) ((char *) r + data); |
| |
| if (h) { |
| v->len = h->value.len; |
| v->valid = 1; |
| v->no_cacheable = 0; |
| v->not_found = 0; |
| v->data = h->value.data; |
| |
| } else { |
| v->not_found = 1; |
| } |
| |
| return NGX_OK; |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_variable_cookies(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data) |
| { |
| return ngx_http_variable_headers_internal(r, v, data, ';'); |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_variable_headers(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data) |
| { |
| return ngx_http_variable_headers_internal(r, v, data, ','); |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_variable_headers_internal(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data, u_char sep) |
| { |
| size_t len; |
| u_char *p, *end; |
| ngx_uint_t i, n; |
| ngx_array_t *a; |
| ngx_table_elt_t **h; |
| |
| a = (ngx_array_t *) ((char *) r + data); |
| |
| n = a->nelts; |
| h = a->elts; |
| |
| len = 0; |
| |
| for (i = 0; i < n; i++) { |
| |
| if (h[i]->hash == 0) { |
| continue; |
| } |
| |
| len += h[i]->value.len + 2; |
| } |
| |
| if (len == 0) { |
| v->not_found = 1; |
| return NGX_OK; |
| } |
| |
| len -= 2; |
| |
| v->valid = 1; |
| v->no_cacheable = 0; |
| v->not_found = 0; |
| |
| if (n == 1) { |
| v->len = (*h)->value.len; |
| v->data = (*h)->value.data; |
| |
| return NGX_OK; |
| } |
| |
| p = ngx_pnalloc(r->pool, len); |
| if (p == NULL) { |
| return NGX_ERROR; |
| } |
| |
| v->len = len; |
| v->data = p; |
| |
| end = p + len; |
| |
| for (i = 0; /* void */ ; i++) { |
| |
| if (h[i]->hash == 0) { |
| continue; |
| } |
| |
| p = ngx_copy(p, h[i]->value.data, h[i]->value.len); |
| |
| if (p == end) { |
| break; |
| } |
| |
| *p++ = sep; *p++ = ' '; |
| } |
| |
| return NGX_OK; |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_variable_unknown_header_in(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data) |
| { |
| return ngx_http_variable_unknown_header(r, v, (ngx_str_t *) data, |
| &r->headers_in.headers.part, |
| sizeof("http_") - 1); |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_variable_unknown_header_out(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data) |
| { |
| return ngx_http_variable_unknown_header(r, v, (ngx_str_t *) data, |
| &r->headers_out.headers.part, |
| sizeof("sent_http_") - 1); |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_variable_unknown_trailer_out(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data) |
| { |
| return ngx_http_variable_unknown_header(r, v, (ngx_str_t *) data, |
| &r->headers_out.trailers.part, |
| sizeof("sent_trailer_") - 1); |
| } |
| |
| |
| ngx_int_t |
| ngx_http_variable_unknown_header(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, ngx_str_t *var, |
| ngx_list_part_t *part, size_t prefix) |
| { |
| u_char *p, ch; |
| size_t len; |
| ngx_uint_t i, n; |
| ngx_table_elt_t *header, *h, **ph; |
| |
| ph = &h; |
| #if (NGX_SUPPRESS_WARN) |
| len = 0; |
| #endif |
| |
| header = part->elts; |
| |
| for (i = 0; /* void */ ; i++) { |
| |
| if (i >= part->nelts) { |
| if (part->next == NULL) { |
| break; |
| } |
| |
| part = part->next; |
| header = part->elts; |
| i = 0; |
| } |
| |
| if (header[i].hash == 0) { |
| continue; |
| } |
| |
| if (header[i].key.len != var->len - prefix) { |
| continue; |
| } |
| |
| for (n = 0; n < var->len - prefix; n++) { |
| ch = header[i].key.data[n]; |
| |
| if (ch >= 'A' && ch <= 'Z') { |
| ch |= 0x20; |
| |
| } else if (ch == '-') { |
| ch = '_'; |
| } |
| |
| if (var->data[n + prefix] != ch) { |
| break; |
| } |
| } |
| |
| if (n != var->len - prefix) { |
| continue; |
| } |
| |
| len += header[i].value.len + 2; |
| |
| *ph = &header[i]; |
| ph = &header[i].next; |
| } |
| |
| *ph = NULL; |
| |
| if (h == NULL) { |
| v->not_found = 1; |
| return NGX_OK; |
| } |
| |
| len -= 2; |
| |
| if (h->next == NULL) { |
| |
| v->len = h->value.len; |
| v->valid = 1; |
| v->no_cacheable = 0; |
| v->not_found = 0; |
| v->data = h->value.data; |
| |
| return NGX_OK; |
| } |
| |
| p = ngx_pnalloc(r->pool, len); |
| if (p == NULL) { |
| return NGX_ERROR; |
| } |
| |
| v->len = len; |
| v->valid = 1; |
| v->no_cacheable = 0; |
| v->not_found = 0; |
| v->data = p; |
| |
| for ( ;; ) { |
| |
| p = ngx_copy(p, h->value.data, h->value.len); |
| |
| if (h->next == NULL) { |
| break; |
| } |
| |
| *p++ = ','; *p++ = ' '; |
| |
| h = h->next; |
| } |
| |
| return NGX_OK; |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_variable_request_line(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data) |
| { |
| u_char *p, *s; |
| |
| s = r->request_line.data; |
| |
| if (s == NULL) { |
| s = r->request_start; |
| |
| if (s == NULL) { |
| v->not_found = 1; |
| return NGX_OK; |
| } |
| |
| for (p = s; p < r->header_in->last; p++) { |
| if (*p == CR || *p == LF) { |
| break; |
| } |
| } |
| |
| r->request_line.len = p - s; |
| r->request_line.data = s; |
| } |
| |
| v->len = r->request_line.len; |
| v->valid = 1; |
| v->no_cacheable = 0; |
| v->not_found = 0; |
| v->data = s; |
| |
| return NGX_OK; |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_variable_cookie(ngx_http_request_t *r, ngx_http_variable_value_t *v, |
| uintptr_t data) |
| { |
| ngx_str_t *name = (ngx_str_t *) data; |
| |
| ngx_str_t cookie, s; |
| |
| s.len = name->len - (sizeof("cookie_") - 1); |
| s.data = name->data + sizeof("cookie_") - 1; |
| |
| if (ngx_http_parse_multi_header_lines(&r->headers_in.cookies, &s, &cookie) |
| == NGX_DECLINED) |
| { |
| v->not_found = 1; |
| return NGX_OK; |
| } |
| |
| v->len = cookie.len; |
| v->valid = 1; |
| v->no_cacheable = 0; |
| v->not_found = 0; |
| v->data = cookie.data; |
| |
| return NGX_OK; |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_variable_argument(ngx_http_request_t *r, ngx_http_variable_value_t *v, |
| uintptr_t data) |
| { |
| ngx_str_t *name = (ngx_str_t *) data; |
| |
| u_char *arg; |
| size_t len; |
| ngx_str_t value; |
| |
| len = name->len - (sizeof("arg_") - 1); |
| arg = name->data + sizeof("arg_") - 1; |
| |
| if (len == 0 || ngx_http_arg(r, arg, len, &value) != NGX_OK) { |
| v->not_found = 1; |
| return NGX_OK; |
| } |
| |
| v->data = value.data; |
| v->len = value.len; |
| v->valid = 1; |
| v->no_cacheable = 0; |
| v->not_found = 0; |
| |
| return NGX_OK; |
| } |
| |
| |
| #if (NGX_HAVE_TCP_INFO) |
| |
| static ngx_int_t |
| ngx_http_variable_tcpinfo(ngx_http_request_t *r, ngx_http_variable_value_t *v, |
| uintptr_t data) |
| { |
| struct tcp_info ti; |
| socklen_t len; |
| uint32_t value; |
| |
| len = sizeof(struct tcp_info); |
| if (getsockopt(r->connection->fd, IPPROTO_TCP, TCP_INFO, &ti, &len) == -1) { |
| v->not_found = 1; |
| return NGX_OK; |
| } |
| |
| v->data = ngx_pnalloc(r->pool, NGX_INT32_LEN); |
| if (v->data == NULL) { |
| return NGX_ERROR; |
| } |
| |
| switch (data) { |
| case 0: |
| value = ti.tcpi_rtt; |
| break; |
| |
| case 1: |
| value = ti.tcpi_rttvar; |
| break; |
| |
| case 2: |
| value = ti.tcpi_snd_cwnd; |
| break; |
| |
| case 3: |
| value = ti.tcpi_rcv_space; |
| break; |
| |
| /* suppress warning */ |
| default: |
| value = 0; |
| break; |
| } |
| |
| v->len = ngx_sprintf(v->data, "%uD", value) - v->data; |
| v->valid = 1; |
| v->no_cacheable = 0; |
| v->not_found = 0; |
| |
| return NGX_OK; |
| } |
| |
| #endif |
| |
| |
| static ngx_int_t |
| ngx_http_variable_content_length(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data) |
| { |
| u_char *p; |
| |
| if (r->headers_in.content_length) { |
| v->len = r->headers_in.content_length->value.len; |
| v->data = r->headers_in.content_length->value.data; |
| v->valid = 1; |
| v->no_cacheable = 0; |
| v->not_found = 0; |
| |
| } else if (r->reading_body) { |
| v->not_found = 1; |
| v->no_cacheable = 1; |
| |
| } else if (r->headers_in.content_length_n >= 0) { |
| p = ngx_pnalloc(r->pool, NGX_OFF_T_LEN); |
| if (p == NULL) { |
| return NGX_ERROR; |
| } |
| |
| v->len = ngx_sprintf(p, "%O", r->headers_in.content_length_n) - p; |
| v->data = p; |
| v->valid = 1; |
| v->no_cacheable = 0; |
| v->not_found = 0; |
| |
| } else if (r->headers_in.chunked) { |
| v->not_found = 1; |
| v->no_cacheable = 1; |
| |
| } else { |
| v->not_found = 1; |
| } |
| |
| return NGX_OK; |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_variable_host(ngx_http_request_t *r, ngx_http_variable_value_t *v, |
| uintptr_t data) |
| { |
| ngx_http_core_srv_conf_t *cscf; |
| |
| if (r->headers_in.server.len) { |
| v->len = r->headers_in.server.len; |
| v->data = r->headers_in.server.data; |
| |
| } else { |
| cscf = ngx_http_get_module_srv_conf(r, ngx_http_core_module); |
| |
| v->len = cscf->server_name.len; |
| v->data = cscf->server_name.data; |
| } |
| |
| v->valid = 1; |
| v->no_cacheable = 0; |
| v->not_found = 0; |
| |
| return NGX_OK; |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_variable_binary_remote_addr(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data) |
| { |
| struct sockaddr_in *sin; |
| #if (NGX_HAVE_INET6) |
| struct sockaddr_in6 *sin6; |
| #endif |
| |
| switch (r->connection->sockaddr->sa_family) { |
| |
| #if (NGX_HAVE_INET6) |
| case AF_INET6: |
| sin6 = (struct sockaddr_in6 *) r->connection->sockaddr; |
| |
| v->len = sizeof(struct in6_addr); |
| v->valid = 1; |
| v->no_cacheable = 0; |
| v->not_found = 0; |
| v->data = sin6->sin6_addr.s6_addr; |
| |
| break; |
| #endif |
| |
| #if (NGX_HAVE_UNIX_DOMAIN) |
| case AF_UNIX: |
| |
| v->len = r->connection->addr_text.len; |
| v->valid = 1; |
| v->no_cacheable = 0; |
| v->not_found = 0; |
| v->data = r->connection->addr_text.data; |
| |
| break; |
| #endif |
| |
| default: /* AF_INET */ |
| sin = (struct sockaddr_in *) r->connection->sockaddr; |
| |
| v->len = sizeof(in_addr_t); |
| v->valid = 1; |
| v->no_cacheable = 0; |
| v->not_found = 0; |
| v->data = (u_char *) &sin->sin_addr; |
| |
| break; |
| } |
| |
| return NGX_OK; |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_variable_remote_addr(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data) |
| { |
| v->len = r->connection->addr_text.len; |
| v->valid = 1; |
| v->no_cacheable = 0; |
| v->not_found = 0; |
| v->data = r->connection->addr_text.data; |
| |
| return NGX_OK; |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_variable_remote_port(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data) |
| { |
| ngx_uint_t port; |
| |
| v->len = 0; |
| v->valid = 1; |
| v->no_cacheable = 0; |
| v->not_found = 0; |
| |
| v->data = ngx_pnalloc(r->pool, sizeof("65535") - 1); |
| if (v->data == NULL) { |
| return NGX_ERROR; |
| } |
| |
| port = ngx_inet_get_port(r->connection->sockaddr); |
| |
| if (port > 0 && port < 65536) { |
| v->len = ngx_sprintf(v->data, "%ui", port) - v->data; |
| } |
| |
| return NGX_OK; |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_variable_proxy_protocol_addr(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data) |
| { |
| ngx_str_t *addr; |
| ngx_proxy_protocol_t *pp; |
| |
| pp = r->connection->proxy_protocol; |
| if (pp == NULL) { |
| v->not_found = 1; |
| return NGX_OK; |
| } |
| |
| addr = (ngx_str_t *) ((char *) pp + data); |
| |
| v->len = addr->len; |
| v->valid = 1; |
| v->no_cacheable = 0; |
| v->not_found = 0; |
| v->data = addr->data; |
| |
| return NGX_OK; |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_variable_proxy_protocol_port(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data) |
| { |
| ngx_uint_t port; |
| ngx_proxy_protocol_t *pp; |
| |
| pp = r->connection->proxy_protocol; |
| if (pp == NULL) { |
| v->not_found = 1; |
| return NGX_OK; |
| } |
| |
| v->len = 0; |
| v->valid = 1; |
| v->no_cacheable = 0; |
| v->not_found = 0; |
| |
| v->data = ngx_pnalloc(r->pool, sizeof("65535") - 1); |
| if (v->data == NULL) { |
| return NGX_ERROR; |
| } |
| |
| port = *(in_port_t *) ((char *) pp + data); |
| |
| if (port > 0 && port < 65536) { |
| v->len = ngx_sprintf(v->data, "%ui", port) - v->data; |
| } |
| |
| return NGX_OK; |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_variable_server_addr(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data) |
| { |
| ngx_str_t s; |
| u_char addr[NGX_SOCKADDR_STRLEN]; |
| |
| s.len = NGX_SOCKADDR_STRLEN; |
| s.data = addr; |
| |
| if (ngx_connection_local_sockaddr(r->connection, &s, 0) != NGX_OK) { |
| return NGX_ERROR; |
| } |
| |
| s.data = ngx_pnalloc(r->pool, s.len); |
| if (s.data == NULL) { |
| return NGX_ERROR; |
| } |
| |
| ngx_memcpy(s.data, addr, s.len); |
| |
| v->len = s.len; |
| v->valid = 1; |
| v->no_cacheable = 0; |
| v->not_found = 0; |
| v->data = s.data; |
| |
| return NGX_OK; |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_variable_server_port(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data) |
| { |
| ngx_uint_t port; |
| |
| v->len = 0; |
| v->valid = 1; |
| v->no_cacheable = 0; |
| v->not_found = 0; |
| |
| if (ngx_connection_local_sockaddr(r->connection, NULL, 0) != NGX_OK) { |
| return NGX_ERROR; |
| } |
| |
| v->data = ngx_pnalloc(r->pool, sizeof("65535") - 1); |
| if (v->data == NULL) { |
| return NGX_ERROR; |
| } |
| |
| port = ngx_inet_get_port(r->connection->local_sockaddr); |
| |
| if (port > 0 && port < 65536) { |
| v->len = ngx_sprintf(v->data, "%ui", port) - v->data; |
| } |
| |
| return NGX_OK; |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_variable_scheme(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data) |
| { |
| #if (NGX_HTTP_SSL) |
| |
| if (r->connection->ssl) { |
| v->len = sizeof("https") - 1; |
| v->valid = 1; |
| v->no_cacheable = 0; |
| v->not_found = 0; |
| v->data = (u_char *) "https"; |
| |
| return NGX_OK; |
| } |
| |
| #endif |
| |
| v->len = sizeof("http") - 1; |
| v->valid = 1; |
| v->no_cacheable = 0; |
| v->not_found = 0; |
| v->data = (u_char *) "http"; |
| |
| return NGX_OK; |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_variable_https(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data) |
| { |
| #if (NGX_HTTP_SSL) |
| |
| if (r->connection->ssl) { |
| v->len = sizeof("on") - 1; |
| v->valid = 1; |
| v->no_cacheable = 0; |
| v->not_found = 0; |
| v->data = (u_char *) "on"; |
| |
| return NGX_OK; |
| } |
| |
| #endif |
| |
| *v = ngx_http_variable_null_value; |
| |
| return NGX_OK; |
| } |
| |
| |
| static void |
| ngx_http_variable_set_args(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data) |
| { |
| r->args.len = v->len; |
| r->args.data = v->data; |
| r->valid_unparsed_uri = 0; |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_variable_is_args(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data) |
| { |
| if (r->args.len == 0) { |
| *v = ngx_http_variable_null_value; |
| return NGX_OK; |
| } |
| |
| v->len = 1; |
| v->valid = 1; |
| v->no_cacheable = 0; |
| v->not_found = 0; |
| v->data = (u_char *) "?"; |
| |
| return NGX_OK; |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_variable_document_root(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data) |
| { |
| ngx_str_t path; |
| ngx_http_core_loc_conf_t *clcf; |
| |
| clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); |
| |
| if (clcf->root_lengths == NULL) { |
| v->len = clcf->root.len; |
| v->valid = 1; |
| v->no_cacheable = 0; |
| v->not_found = 0; |
| v->data = clcf->root.data; |
| |
| } else { |
| if (ngx_http_script_run(r, &path, clcf->root_lengths->elts, 0, |
| clcf->root_values->elts) |
| == NULL) |
| { |
| return NGX_ERROR; |
| } |
| |
| if (ngx_get_full_name(r->pool, (ngx_str_t *) &ngx_cycle->prefix, &path) |
| != NGX_OK) |
| { |
| return NGX_ERROR; |
| } |
| |
| v->len = path.len; |
| v->valid = 1; |
| v->no_cacheable = 0; |
| v->not_found = 0; |
| v->data = path.data; |
| } |
| |
| return NGX_OK; |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_variable_realpath_root(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data) |
| { |
| u_char *real; |
| size_t len; |
| ngx_str_t path; |
| ngx_http_core_loc_conf_t *clcf; |
| #if (NGX_HAVE_MAX_PATH) |
| u_char buffer[NGX_MAX_PATH]; |
| #endif |
| |
| clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); |
| |
| if (clcf->root_lengths == NULL) { |
| path = clcf->root; |
| |
| } else { |
| if (ngx_http_script_run(r, &path, clcf->root_lengths->elts, 1, |
| clcf->root_values->elts) |
| == NULL) |
| { |
| return NGX_ERROR; |
| } |
| |
| path.data[path.len - 1] = '\0'; |
| |
| if (ngx_get_full_name(r->pool, (ngx_str_t *) &ngx_cycle->prefix, &path) |
| != NGX_OK) |
| { |
| return NGX_ERROR; |
| } |
| } |
| |
| #if (NGX_HAVE_MAX_PATH) |
| real = buffer; |
| #else |
| real = NULL; |
| #endif |
| |
| real = ngx_realpath(path.data, real); |
| |
| if (real == NULL) { |
| ngx_log_error(NGX_LOG_CRIT, r->connection->log, ngx_errno, |
| ngx_realpath_n " \"%s\" failed", path.data); |
| return NGX_ERROR; |
| } |
| |
| len = ngx_strlen(real); |
| |
| v->data = ngx_pnalloc(r->pool, len); |
| if (v->data == NULL) { |
| #if !(NGX_HAVE_MAX_PATH) |
| ngx_free(real); |
| #endif |
| return NGX_ERROR; |
| } |
| |
| v->len = len; |
| v->valid = 1; |
| v->no_cacheable = 0; |
| v->not_found = 0; |
| |
| ngx_memcpy(v->data, real, len); |
| |
| #if !(NGX_HAVE_MAX_PATH) |
| ngx_free(real); |
| #endif |
| |
| return NGX_OK; |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_variable_request_filename(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data) |
| { |
| size_t root; |
| ngx_str_t path; |
| |
| if (ngx_http_map_uri_to_path(r, &path, &root, 0) == NULL) { |
| return NGX_ERROR; |
| } |
| |
| /* ngx_http_map_uri_to_path() allocates memory for terminating '\0' */ |
| |
| v->len = path.len - 1; |
| v->valid = 1; |
| v->no_cacheable = 0; |
| v->not_found = 0; |
| v->data = path.data; |
| |
| return NGX_OK; |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_variable_server_name(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data) |
| { |
| ngx_http_core_srv_conf_t *cscf; |
| |
| cscf = ngx_http_get_module_srv_conf(r, ngx_http_core_module); |
| |
| v->len = cscf->server_name.len; |
| v->valid = 1; |
| v->no_cacheable = 0; |
| v->not_found = 0; |
| v->data = cscf->server_name.data; |
| |
| return NGX_OK; |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_variable_request_method(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data) |
| { |
| if (r->main->method_name.data) { |
| v->len = r->main->method_name.len; |
| v->valid = 1; |
| v->no_cacheable = 0; |
| v->not_found = 0; |
| v->data = r->main->method_name.data; |
| |
| } else { |
| v->not_found = 1; |
| } |
| |
| return NGX_OK; |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_variable_remote_user(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data) |
| { |
| ngx_int_t rc; |
| |
| rc = ngx_http_auth_basic_user(r); |
| |
| if (rc == NGX_DECLINED) { |
| v->not_found = 1; |
| return NGX_OK; |
| } |
| |
| if (rc == NGX_ERROR) { |
| return NGX_ERROR; |
| } |
| |
| v->len = r->headers_in.user.len; |
| v->valid = 1; |
| v->no_cacheable = 0; |
| v->not_found = 0; |
| v->data = r->headers_in.user.data; |
| |
| return NGX_OK; |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_variable_bytes_sent(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data) |
| { |
| u_char *p; |
| |
| p = ngx_pnalloc(r->pool, NGX_OFF_T_LEN); |
| if (p == NULL) { |
| return NGX_ERROR; |
| } |
| |
| v->len = ngx_sprintf(p, "%O", r->connection->sent) - p; |
| v->valid = 1; |
| v->no_cacheable = 0; |
| v->not_found = 0; |
| v->data = p; |
| |
| return NGX_OK; |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_variable_body_bytes_sent(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data) |
| { |
| off_t sent; |
| u_char *p; |
| |
| sent = r->connection->sent - r->header_size; |
| |
| if (sent < 0) { |
| sent = 0; |
| } |
| |
| p = ngx_pnalloc(r->pool, NGX_OFF_T_LEN); |
| if (p == NULL) { |
| return NGX_ERROR; |
| } |
| |
| v->len = ngx_sprintf(p, "%O", sent) - p; |
| v->valid = 1; |
| v->no_cacheable = 0; |
| v->not_found = 0; |
| v->data = p; |
| |
| return NGX_OK; |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_variable_pipe(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data) |
| { |
| v->data = (u_char *) (r->pipeline ? "p" : "."); |
| v->len = 1; |
| v->valid = 1; |
| v->no_cacheable = 0; |
| v->not_found = 0; |
| |
| return NGX_OK; |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_variable_status(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data) |
| { |
| ngx_uint_t status; |
| |
| v->data = ngx_pnalloc(r->pool, NGX_INT_T_LEN); |
| if (v->data == NULL) { |
| return NGX_ERROR; |
| } |
| |
| if (r->err_status) { |
| status = r->err_status; |
| |
| } else if (r->headers_out.status) { |
| status = r->headers_out.status; |
| |
| } else if (r->http_version == NGX_HTTP_VERSION_9) { |
| status = 9; |
| |
| } else { |
| status = 0; |
| } |
| |
| v->len = ngx_sprintf(v->data, "%03ui", status) - v->data; |
| v->valid = 1; |
| v->no_cacheable = 0; |
| v->not_found = 0; |
| |
| return NGX_OK; |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_variable_sent_content_type(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data) |
| { |
| if (r->headers_out.content_type.len) { |
| v->len = r->headers_out.content_type.len; |
| v->valid = 1; |
| v->no_cacheable = 0; |
| v->not_found = 0; |
| v->data = r->headers_out.content_type.data; |
| |
| } else { |
| v->not_found = 1; |
| } |
| |
| return NGX_OK; |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_variable_sent_content_length(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data) |
| { |
| u_char *p; |
| |
| if (r->headers_out.content_length) { |
| v->len = r->headers_out.content_length->value.len; |
| v->valid = 1; |
| v->no_cacheable = 0; |
| v->not_found = 0; |
| v->data = r->headers_out.content_length->value.data; |
| |
| return NGX_OK; |
| } |
| |
| if (r->headers_out.content_length_n >= 0) { |
| p = ngx_pnalloc(r->pool, NGX_OFF_T_LEN); |
| if (p == NULL) { |
| return NGX_ERROR; |
| } |
| |
| v->len = ngx_sprintf(p, "%O", r->headers_out.content_length_n) - p; |
| v->valid = 1; |
| v->no_cacheable = 0; |
| v->not_found = 0; |
| v->data = p; |
| |
| return NGX_OK; |
| } |
| |
| v->not_found = 1; |
| |
| return NGX_OK; |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_variable_sent_location(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data) |
| { |
| ngx_str_t name; |
| |
| if (r->headers_out.location) { |
| v->len = r->headers_out.location->value.len; |
| v->valid = 1; |
| v->no_cacheable = 0; |
| v->not_found = 0; |
| v->data = r->headers_out.location->value.data; |
| |
| return NGX_OK; |
| } |
| |
| ngx_str_set(&name, "sent_http_location"); |
| |
| return ngx_http_variable_unknown_header(r, v, &name, |
| &r->headers_out.headers.part, |
| sizeof("sent_http_") - 1); |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_variable_sent_last_modified(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data) |
| { |
| u_char *p; |
| |
| if (r->headers_out.last_modified) { |
| v->len = r->headers_out.last_modified->value.len; |
| v->valid = 1; |
| v->no_cacheable = 0; |
| v->not_found = 0; |
| v->data = r->headers_out.last_modified->value.data; |
| |
| return NGX_OK; |
| } |
| |
| if (r->headers_out.last_modified_time >= 0) { |
| p = ngx_pnalloc(r->pool, sizeof("Mon, 28 Sep 1970 06:00:00 GMT") - 1); |
| if (p == NULL) { |
| return NGX_ERROR; |
| } |
| |
| v->len = ngx_http_time(p, r->headers_out.last_modified_time) - p; |
| v->valid = 1; |
| v->no_cacheable = 0; |
| v->not_found = 0; |
| v->data = p; |
| |
| return NGX_OK; |
| } |
| |
| v->not_found = 1; |
| |
| return NGX_OK; |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_variable_sent_connection(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data) |
| { |
| size_t len; |
| char *p; |
| |
| if (r->headers_out.status == NGX_HTTP_SWITCHING_PROTOCOLS) { |
| len = sizeof("upgrade") - 1; |
| p = "upgrade"; |
| |
| } else if (r->keepalive) { |
| len = sizeof("keep-alive") - 1; |
| p = "keep-alive"; |
| |
| } else { |
| len = sizeof("close") - 1; |
| p = "close"; |
| } |
| |
| v->len = len; |
| v->valid = 1; |
| v->no_cacheable = 0; |
| v->not_found = 0; |
| v->data = (u_char *) p; |
| |
| return NGX_OK; |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_variable_sent_keep_alive(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data) |
| { |
| u_char *p; |
| ngx_http_core_loc_conf_t *clcf; |
| |
| if (r->keepalive) { |
| clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module); |
| |
| if (clcf->keepalive_header) { |
| |
| p = ngx_pnalloc(r->pool, sizeof("timeout=") - 1 + NGX_TIME_T_LEN); |
| if (p == NULL) { |
| return NGX_ERROR; |
| } |
| |
| v->len = ngx_sprintf(p, "timeout=%T", clcf->keepalive_header) - p; |
| v->valid = 1; |
| v->no_cacheable = 0; |
| v->not_found = 0; |
| v->data = p; |
| |
| return NGX_OK; |
| } |
| } |
| |
| v->not_found = 1; |
| |
| return NGX_OK; |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_variable_sent_transfer_encoding(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data) |
| { |
| if (r->chunked) { |
| v->len = sizeof("chunked") - 1; |
| v->valid = 1; |
| v->no_cacheable = 0; |
| v->not_found = 0; |
| v->data = (u_char *) "chunked"; |
| |
| } else { |
| v->not_found = 1; |
| } |
| |
| return NGX_OK; |
| } |
| |
| |
| static void |
| ngx_http_variable_set_limit_rate(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data) |
| { |
| ssize_t s; |
| ngx_str_t val; |
| |
| val.len = v->len; |
| val.data = v->data; |
| |
| s = ngx_parse_size(&val); |
| |
| if (s == NGX_ERROR) { |
| ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, |
| "invalid $limit_rate \"%V\"", &val); |
| return; |
| } |
| |
| r->limit_rate = s; |
| r->limit_rate_set = 1; |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_variable_request_completion(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data) |
| { |
| if (r->request_complete) { |
| v->len = 2; |
| v->valid = 1; |
| v->no_cacheable = 0; |
| v->not_found = 0; |
| v->data = (u_char *) "OK"; |
| |
| return NGX_OK; |
| } |
| |
| *v = ngx_http_variable_null_value; |
| |
| return NGX_OK; |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_variable_request_body(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data) |
| { |
| u_char *p; |
| size_t len; |
| ngx_buf_t *buf; |
| ngx_chain_t *cl; |
| |
| if (r->request_body == NULL |
| || r->request_body->bufs == NULL |
| || r->request_body->temp_file) |
| { |
| v->not_found = 1; |
| |
| return NGX_OK; |
| } |
| |
| cl = r->request_body->bufs; |
| buf = cl->buf; |
| |
| if (cl->next == NULL) { |
| v->len = buf->last - buf->pos; |
| v->valid = 1; |
| v->no_cacheable = 0; |
| v->not_found = 0; |
| v->data = buf->pos; |
| |
| return NGX_OK; |
| } |
| |
| len = buf->last - buf->pos; |
| cl = cl->next; |
| |
| for ( /* void */ ; cl; cl = cl->next) { |
| buf = cl->buf; |
| len += buf->last - buf->pos; |
| } |
| |
| p = ngx_pnalloc(r->pool, len); |
| if (p == NULL) { |
| return NGX_ERROR; |
| } |
| |
| v->data = p; |
| cl = r->request_body->bufs; |
| |
| for ( /* void */ ; cl; cl = cl->next) { |
| buf = cl->buf; |
| p = ngx_cpymem(p, buf->pos, buf->last - buf->pos); |
| } |
| |
| v->len = len; |
| v->valid = 1; |
| v->no_cacheable = 0; |
| v->not_found = 0; |
| |
| return NGX_OK; |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_variable_request_body_file(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data) |
| { |
| if (r->request_body == NULL || r->request_body->temp_file == NULL) { |
| v->not_found = 1; |
| |
| return NGX_OK; |
| } |
| |
| v->len = r->request_body->temp_file->file.name.len; |
| v->valid = 1; |
| v->no_cacheable = 0; |
| v->not_found = 0; |
| v->data = r->request_body->temp_file->file.name.data; |
| |
| return NGX_OK; |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_variable_request_length(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data) |
| { |
| u_char *p; |
| |
| p = ngx_pnalloc(r->pool, NGX_OFF_T_LEN); |
| if (p == NULL) { |
| return NGX_ERROR; |
| } |
| |
| v->len = ngx_sprintf(p, "%O", r->request_length) - p; |
| v->valid = 1; |
| v->no_cacheable = 0; |
| v->not_found = 0; |
| v->data = p; |
| |
| return NGX_OK; |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_variable_request_time(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data) |
| { |
| u_char *p; |
| ngx_time_t *tp; |
| ngx_msec_int_t ms; |
| |
| p = ngx_pnalloc(r->pool, NGX_TIME_T_LEN + 4); |
| if (p == NULL) { |
| return NGX_ERROR; |
| } |
| |
| tp = ngx_timeofday(); |
| |
| ms = (ngx_msec_int_t) |
| ((tp->sec - r->start_sec) * 1000 + (tp->msec - r->start_msec)); |
| ms = ngx_max(ms, 0); |
| |
| v->len = ngx_sprintf(p, "%T.%03M", (time_t) ms / 1000, ms % 1000) - p; |
| v->valid = 1; |
| v->no_cacheable = 0; |
| v->not_found = 0; |
| v->data = p; |
| |
| return NGX_OK; |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_variable_request_id(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data) |
| { |
| u_char *id; |
| |
| #if (NGX_OPENSSL) |
| u_char random_bytes[16]; |
| #endif |
| |
| id = ngx_pnalloc(r->pool, 32); |
| if (id == NULL) { |
| return NGX_ERROR; |
| } |
| |
| v->valid = 1; |
| v->no_cacheable = 0; |
| v->not_found = 0; |
| |
| v->len = 32; |
| v->data = id; |
| |
| #if (NGX_OPENSSL) |
| |
| if (RAND_bytes(random_bytes, 16) == 1) { |
| ngx_hex_dump(id, random_bytes, 16); |
| return NGX_OK; |
| } |
| |
| ngx_ssl_error(NGX_LOG_ERR, r->connection->log, 0, "RAND_bytes() failed"); |
| |
| #endif |
| |
| ngx_sprintf(id, "%08xD%08xD%08xD%08xD", |
| (uint32_t) ngx_random(), (uint32_t) ngx_random(), |
| (uint32_t) ngx_random(), (uint32_t) ngx_random()); |
| |
| return NGX_OK; |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_variable_connection(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data) |
| { |
| u_char *p; |
| |
| p = ngx_pnalloc(r->pool, NGX_ATOMIC_T_LEN); |
| if (p == NULL) { |
| return NGX_ERROR; |
| } |
| |
| v->len = ngx_sprintf(p, "%uA", r->connection->number) - p; |
| v->valid = 1; |
| v->no_cacheable = 0; |
| v->not_found = 0; |
| v->data = p; |
| |
| return NGX_OK; |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_variable_connection_requests(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data) |
| { |
| u_char *p; |
| |
| p = ngx_pnalloc(r->pool, NGX_INT_T_LEN); |
| if (p == NULL) { |
| return NGX_ERROR; |
| } |
| |
| v->len = ngx_sprintf(p, "%ui", r->connection->requests) - p; |
| v->valid = 1; |
| v->no_cacheable = 0; |
| v->not_found = 0; |
| v->data = p; |
| |
| return NGX_OK; |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_variable_connection_time(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data) |
| { |
| u_char *p; |
| ngx_msec_int_t ms; |
| |
| p = ngx_pnalloc(r->pool, NGX_TIME_T_LEN + 4); |
| if (p == NULL) { |
| return NGX_ERROR; |
| } |
| |
| ms = ngx_current_msec - r->connection->start_time; |
| ms = ngx_max(ms, 0); |
| |
| v->len = ngx_sprintf(p, "%T.%03M", (time_t) ms / 1000, ms % 1000) - p; |
| v->valid = 1; |
| v->no_cacheable = 0; |
| v->not_found = 0; |
| v->data = p; |
| |
| return NGX_OK; |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_variable_nginx_version(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data) |
| { |
| v->len = sizeof(NGINX_VERSION) - 1; |
| v->valid = 1; |
| v->no_cacheable = 0; |
| v->not_found = 0; |
| v->data = (u_char *) NGINX_VERSION; |
| |
| return NGX_OK; |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_variable_hostname(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data) |
| { |
| v->len = ngx_cycle->hostname.len; |
| v->valid = 1; |
| v->no_cacheable = 0; |
| v->not_found = 0; |
| v->data = ngx_cycle->hostname.data; |
| |
| return NGX_OK; |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_variable_pid(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data) |
| { |
| u_char *p; |
| |
| p = ngx_pnalloc(r->pool, NGX_INT64_LEN); |
| if (p == NULL) { |
| return NGX_ERROR; |
| } |
| |
| v->len = ngx_sprintf(p, "%P", ngx_pid) - p; |
| v->valid = 1; |
| v->no_cacheable = 0; |
| v->not_found = 0; |
| v->data = p; |
| |
| return NGX_OK; |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_variable_msec(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data) |
| { |
| u_char *p; |
| ngx_time_t *tp; |
| |
| p = ngx_pnalloc(r->pool, NGX_TIME_T_LEN + 4); |
| if (p == NULL) { |
| return NGX_ERROR; |
| } |
| |
| tp = ngx_timeofday(); |
| |
| v->len = ngx_sprintf(p, "%T.%03M", tp->sec, tp->msec) - p; |
| v->valid = 1; |
| v->no_cacheable = 0; |
| v->not_found = 0; |
| v->data = p; |
| |
| return NGX_OK; |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_variable_time_iso8601(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data) |
| { |
| u_char *p; |
| |
| p = ngx_pnalloc(r->pool, ngx_cached_http_log_iso8601.len); |
| if (p == NULL) { |
| return NGX_ERROR; |
| } |
| |
| ngx_memcpy(p, ngx_cached_http_log_iso8601.data, |
| ngx_cached_http_log_iso8601.len); |
| |
| v->len = ngx_cached_http_log_iso8601.len; |
| v->valid = 1; |
| v->no_cacheable = 0; |
| v->not_found = 0; |
| v->data = p; |
| |
| return NGX_OK; |
| } |
| |
| |
| static ngx_int_t |
| ngx_http_variable_time_local(ngx_http_request_t *r, |
| ngx_http_variable_value_t *v, uintptr_t data) |
| { |
| u_char *p; |
| |
| p = ngx_pnalloc(r->pool, ngx_cached_http_log_time.len); |
| if (p == NULL) { |
| return NGX_ERROR; |
| } |
| |
| ngx_memcpy(p, ngx_cached_http_log_time.data, ngx_cached_http_log_time.len); |
| |
| v->len = ngx_cached_http_log_time.len; |
| v->valid = 1; |
| v->no_cacheable = 0; |
| v->not_found = 0; |
| v->data = p; |
| |
| return NGX_OK; |
| } |
| |
| |
| void * |
| ngx_http_map_find(ngx_http_request_t *r, ngx_http_map_t *map, ngx_str_t *match) |
| { |
| void *value; |
| u_char *low; |
| size_t len; |
| ngx_uint_t key; |
| |
| len = match->len; |
| |
| if (len) { |
| low = ngx_pnalloc(r->pool, len); |
| if (low == NULL) { |
| return NULL; |
| } |
| |
| } else { |
| low = NULL; |
| } |
| |
| key = ngx_hash_strlow(low, match->data, len); |
| |
| value = ngx_hash_find_combined(&map->hash, key, low, len); |
| if (value) { |
| return value; |
| } |
| |
| #if (NGX_PCRE) |
| |
| if (len && map->nregex) { |
| ngx_int_t n; |
| ngx_uint_t i; |
| ngx_http_map_regex_t *reg; |
| |
| reg = map->regex; |
| |
| for (i = 0; i < map->nregex; i++) { |
| |
| n = ngx_http_regex_exec(r, reg[i].regex, match); |
| |
| if (n == NGX_OK) { |
| return reg[i].value; |
| } |
| |
| if (n == NGX_DECLINED) { |
| continue; |
| } |
| |
| /* NGX_ERROR */ |
| |
| return NULL; |
| } |
| } |
| |
| #endif |
| |
| return NULL; |
| } |
| |
| |
| #if (NGX_PCRE) |
| |
| static ngx_int_t |
| ngx_http_variable_not_found(ngx_http_request_t *r, ngx_http_variable_value_t *v, |
| uintptr_t data) |
| { |
| v->not_found = 1; |
| return NGX_OK; |
| } |
| |
| |
| ngx_http_regex_t * |
| ngx_http_regex_compile(ngx_conf_t *cf, ngx_regex_compile_t *rc) |
| { |
| u_char *p; |
| size_t size; |
| ngx_str_t name; |
| ngx_uint_t i, n; |
| ngx_http_variable_t *v; |
| ngx_http_regex_t *re; |
| ngx_http_regex_variable_t *rv; |
| ngx_http_core_main_conf_t *cmcf; |
| |
| rc->pool = cf->pool; |
| |
| if (ngx_regex_compile(rc) != NGX_OK) { |
| ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "%V", &rc->err); |
| return NULL; |
| } |
| |
| re = ngx_pcalloc(cf->pool, sizeof(ngx_http_regex_t)); |
| if (re == NULL) { |
| return NULL; |
| } |
| |
| re->regex = rc->regex; |
| re->ncaptures = rc->captures; |
| re->name = rc->pattern; |
| |
| cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module); |
| cmcf->ncaptures = ngx_max(cmcf->ncaptures, re->ncaptures); |
| |
| n = (ngx_uint_t) rc->named_captures; |
| |
| if (n == 0) { |
| return re; |
| } |
| |
| rv = ngx_palloc(rc->pool, n * sizeof(ngx_http_regex_variable_t)); |
| if (rv == NULL) { |
| return NULL; |
| } |
| |
| re->variables = rv; |
| re->nvariables = n; |
| |
| size = rc->name_size; |
| p = rc->names; |
| |
| for (i = 0; i < n; i++) { |
| rv[i].capture = 2 * ((p[0] << 8) + p[1]); |
| |
| name.data = &p[2]; |
| name.len = ngx_strlen(name.data); |
| |
| v = ngx_http_add_variable(cf, &name, NGX_HTTP_VAR_CHANGEABLE); |
| if (v == NULL) { |
| return NULL; |
| } |
| |
| rv[i].index = ngx_http_get_variable_index(cf, &name); |
| if (rv[i].index == NGX_ERROR) { |
| return NULL; |
| } |
| |
| v->get_handler = ngx_http_variable_not_found; |
| |
| p += size; |
| } |
| |
| return re; |
| } |
| |
| |
| ngx_int_t |
| ngx_http_regex_exec(ngx_http_request_t *r, ngx_http_regex_t *re, ngx_str_t *s) |
| { |
| ngx_int_t rc, index; |
| ngx_uint_t i, n, len; |
| ngx_http_variable_value_t *vv; |
| ngx_http_core_main_conf_t *cmcf; |
| |
| cmcf = ngx_http_get_module_main_conf(r, ngx_http_core_module); |
| |
| if (re->ncaptures) { |
| len = cmcf->ncaptures; |
| |
| if (r->captures == NULL || r->realloc_captures) { |
| r->realloc_captures = 0; |
| |
| r->captures = ngx_palloc(r->pool, len * sizeof(int)); |
| if (r->captures == NULL) { |
| return NGX_ERROR; |
| } |
| } |
| |
| } else { |
| len = 0; |
| } |
| |
| rc = ngx_regex_exec(re->regex, s, r->captures, len); |
| |
| if (rc == NGX_REGEX_NO_MATCHED) { |
| return NGX_DECLINED; |
| } |
| |
| if (rc < 0) { |
| ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0, |
| ngx_regex_exec_n " failed: %i on \"%V\" using \"%V\"", |
| rc, s, &re->name); |
| return NGX_ERROR; |
| } |
| |
| for (i = 0; i < re->nvariables; i++) { |
| |
| n = re->variables[i].capture; |
| index = re->variables[i].index; |
| vv = &r->variables[index]; |
| |
| vv->len = r->captures[n + 1] - r->captures[n]; |
| vv->valid = 1; |
| vv->no_cacheable = 0; |
| vv->not_found = 0; |
| vv->data = &s->data[r->captures[n]]; |
| |
| #if (NGX_DEBUG) |
| { |
| ngx_http_variable_t *v; |
| |
| v = cmcf->variables.elts; |
| |
| ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
| "http regex set $%V to \"%v\"", &v[index].name, vv); |
| } |
| #endif |
| } |
| |
| r->ncaptures = rc * 2; |
| r->captures_data = s->data; |
| |
| return NGX_OK; |
| } |
| |
| #endif |
| |
| |
| ngx_int_t |
| ngx_http_variables_add_core_vars(ngx_conf_t *cf) |
| { |
| ngx_http_variable_t *cv, *v; |
| ngx_http_core_main_conf_t *cmcf; |
| |
| cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module); |
| |
| cmcf->variables_keys = ngx_pcalloc(cf->temp_pool, |
| sizeof(ngx_hash_keys_arrays_t)); |
| if (cmcf->variables_keys == NULL) { |
| return NGX_ERROR; |
| } |
| |
| cmcf->variables_keys->pool = cf->pool; |
| cmcf->variables_keys->temp_pool = cf->pool; |
| |
| if (ngx_hash_keys_array_init(cmcf->variables_keys, NGX_HASH_SMALL) |
| != NGX_OK) |
| { |
| return NGX_ERROR; |
| } |
| |
| if (ngx_array_init(&cmcf->prefix_variables, cf->pool, 8, |
| sizeof(ngx_http_variable_t)) |
| != NGX_OK) |
| { |
| return NGX_ERROR; |
| } |
| |
| for (cv = ngx_http_core_variables; cv->name.len; cv++) { |
| v = ngx_http_add_variable(cf, &cv->name, cv->flags); |
| if (v == NULL) { |
| return NGX_ERROR; |
| } |
| |
| *v = *cv; |
| } |
| |
| return NGX_OK; |
| } |
| |
| |
| ngx_int_t |
| ngx_http_variables_init_vars(ngx_conf_t *cf) |
| { |
| size_t len; |
| ngx_uint_t i, n; |
| ngx_hash_key_t *key; |
| ngx_hash_init_t hash; |
| ngx_http_variable_t *v, *av, *pv; |
| ngx_http_core_main_conf_t *cmcf; |
| |
| /* set the handlers for the indexed http variables */ |
| |
| cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module); |
| |
| v = cmcf->variables.elts; |
| pv = cmcf->prefix_variables.elts; |
| key = cmcf->variables_keys->keys.elts; |
| |
| for (i = 0; i < cmcf->variables.nelts; i++) { |
| |
| for (n = 0; n < cmcf->variables_keys->keys.nelts; n++) { |
| |
| av = key[n].value; |
| |
| if (v[i].name.len == key[n].key.len |
| && ngx_strncmp(v[i].name.data, key[n].key.data, v[i].name.len) |
| == 0) |
| { |
| v[i].get_handler = av->get_handler; |
| v[i].data = av->data; |
| |
| av->flags |= NGX_HTTP_VAR_INDEXED; |
| v[i].flags = av->flags; |
| |
| av->index = i; |
| |
| if (av->get_handler == NULL |
| || (av->flags & NGX_HTTP_VAR_WEAK)) |
| { |
| break; |
| } |
| |
| goto next; |
| } |
| } |
| |
| len = 0; |
| av = NULL; |
| |
| for (n = 0; n < cmcf->prefix_variables.nelts; n++) { |
| if (v[i].name.len >= pv[n].name.len && v[i].name.len > len |
| && ngx_strncmp(v[i].name.data, pv[n].name.data, pv[n].name.len) |
| == 0) |
| { |
| av = &pv[n]; |
| len = pv[n].name.len; |
| } |
| } |
| |
| if (av) { |
| v[i].get_handler = av->get_handler; |
| v[i].data = (uintptr_t) &v[i].name; |
| v[i].flags = av->flags; |
| |
| goto next; |
| } |
| |
| if (v[i].get_handler == NULL) { |
| ngx_log_error(NGX_LOG_EMERG, cf->log, 0, |
| "unknown \"%V\" variable", &v[i].name); |
| |
| return NGX_ERROR; |
| } |
| |
| next: |
| continue; |
| } |
| |
| |
| for (n = 0; n < cmcf->variables_keys->keys.nelts; n++) { |
| av = key[n].value; |
| |
| if (av->flags & NGX_HTTP_VAR_NOHASH) { |
| key[n].key.data = NULL; |
| } |
| } |
| |
| |
| hash.hash = &cmcf->variables_hash; |
| hash.key = ngx_hash_key; |
| hash.max_size = cmcf->variables_hash_max_size; |
| hash.bucket_size = cmcf->variables_hash_bucket_size; |
| hash.name = "variables_hash"; |
| hash.pool = cf->pool; |
| hash.temp_pool = NULL; |
| |
| if (ngx_hash_init(&hash, cmcf->variables_keys->keys.elts, |
| cmcf->variables_keys->keys.nelts) |
| != NGX_OK) |
| { |
| return NGX_ERROR; |
| } |
| |
| cmcf->variables_keys = NULL; |
| |
| return NGX_OK; |
| } |