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Diffstat (limited to 'app/nginx/src/http/ngx_http_variables.c')
-rw-r--r--app/nginx/src/http/ngx_http_variables.c2685
1 files changed, 2685 insertions, 0 deletions
diff --git a/app/nginx/src/http/ngx_http_variables.c b/app/nginx/src/http/ngx_http_variables.c
new file mode 100644
index 0000000..6138819
--- /dev/null
+++ b/app/nginx/src/http/ngx_http_variables.c
@@ -0,0 +1,2685 @@
+
+/*
+ * 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 void ngx_http_variable_request_set_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_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 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_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, 0, 0, 0 },
+
+ { ngx_string("proxy_protocol_port"), NULL,
+ ngx_http_variable_proxy_protocol_port, 0, 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("limit_rate"), ngx_http_variable_request_set_size,
+ 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("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("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_null_string, NULL, NULL, 0, 0, 0 }
+};
+
+
+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;
+ }
+
+ v->flags &= 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;
+ }
+
+ v->flags &= 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 void
+ngx_http_variable_request_set_size(ngx_http_request_t *r,
+ ngx_http_variable_value_t *v, uintptr_t data)
+{
+ ssize_t s, *sp;
+ 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 size \"%V\"", &val);
+ return;
+ }
+
+ sp = (ssize_t *) ((char *) r + data);
+
+ *sp = s;
+
+ return;
+}
+
+
+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(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(v, (ngx_str_t *) data,
+ &r->headers_out.headers.part,
+ sizeof("sent_http_") - 1);
+}
+
+
+ngx_int_t
+ngx_http_variable_unknown_header(ngx_http_variable_value_t *v, ngx_str_t *var,
+ ngx_list_part_t *part, size_t prefix)
+{
+ u_char ch;
+ ngx_uint_t i, n;
+ ngx_table_elt_t *header;
+
+ 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;
+ }
+
+ for (n = 0; n + prefix < var->len && n < header[i].key.len; 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 + prefix == var->len && n == header[i].key.len) {
+ v->len = header[i].value.len;
+ v->valid = 1;
+ v->no_cacheable = 0;
+ v->not_found = 0;
+ v->data = header[i].value.data;
+
+ return NGX_OK;
+ }
+ }
+
+ v->not_found = 1;
+
+ 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 (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 {
+ 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
+
+ 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)
+{
+ v->len = r->connection->proxy_protocol_addr.len;
+ v->valid = 1;
+ v->no_cacheable = 0;
+ v->not_found = 0;
+ v->data = r->connection->proxy_protocol_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;
+
+ 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 = r->connection->proxy_protocol_port;
+
+ 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)
+{
+ v->valid = 1;
+ v->no_cacheable = 0;
+ v->not_found = 0;
+
+ if (r->args.len == 0) {
+ v->len = 0;
+ v->data = NULL;
+ return NGX_OK;
+ }
+
+ v->len = 1;
+ 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(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 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->len = 0;
+ 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_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_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->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;
+}