Mercurial > hg > nginx-quic
view src/http/ngx_http_variables.c @ 4497:95ab6658654a
Fix of rbtree lookup on hash collisions.
Previous code incorrectly assumed that nodes with identical keys are linked
together. This might not be true after tree rebalance.
Patch by Lanshun Zhou.
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Mon, 27 Feb 2012 22:15:39 +0000 |
parents | d9bf6caf0371 |
children | cab9aa79256c |
line wrap: on
line source
/* * 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_int_t ngx_http_variable_request(ngx_http_request_t *r, ngx_http_variable_value_t *v, uintptr_t data); static void ngx_http_variable_request_set(ngx_http_request_t *r, ngx_http_variable_value_t *v, uintptr_t data); 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_headers(ngx_http_request_t *r, ngx_http_variable_value_t *v, uintptr_t data); 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); 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_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 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_body_bytes_sent(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_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_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); /* * 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, $http_via, * and $http_x_forwarded_for variables may be handled by generic * ngx_http_variable_unknown_header_in(), but for perfomance 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_PROXY || NGX_HTTP_REALIP) { ngx_string("http_x_forwarded_for"), NULL, ngx_http_variable_header, offsetof(ngx_http_request_t, headers_in.x_forwarded_for), 0, 0 }, #endif { ngx_string("http_cookie"), NULL, ngx_http_variable_headers, offsetof(ngx_http_request_t, headers_in.cookies), 0, 0 }, { ngx_string("content_length"), NULL, ngx_http_variable_header, offsetof(ngx_http_request_t, headers_in.content_length), 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("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_request_set, 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("body_bytes_sent"), NULL, ngx_http_variable_body_bytes_sent, 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("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("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_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"); 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; 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; } 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; } 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; 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 cmcf->variables.nelts - 1; } 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: %d", index); return NULL; } if (r->variables[index].not_found || r->variables[index].valid) { return &r->variables[index]; } v = cmcf->variables.elts; if (v[index].get_handler(r, &r->variables[index], v[index].data) == NGX_OK) { if (v[index].flags & NGX_HTTP_VAR_NOCACHEABLE) { r->variables[index].no_cacheable = 1; } return &r->variables[index]; } 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) { 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); } else { vv = ngx_palloc(r->pool, sizeof(ngx_http_variable_value_t)); if (vv && v->get_handler(r, vv, v->data) == NGX_OK) { return vv; } return NULL; } } vv = ngx_palloc(r->pool, sizeof(ngx_http_variable_value_t)); if (vv == NULL) { return NULL; } if (ngx_strncmp(name->data, "http_", 5) == 0) { if (ngx_http_variable_unknown_header_in(r, vv, (uintptr_t) name) == NGX_OK) { return vv; } return NULL; } if (ngx_strncmp(name->data, "sent_http_", 10) == 0) { if (ngx_http_variable_unknown_header_out(r, vv, (uintptr_t) name) == NGX_OK) { return vv; } return NULL; } if (ngx_strncmp(name->data, "upstream_http_", 14) == 0) { if (ngx_http_upstream_header_variable(r, vv, (uintptr_t) name) == NGX_OK) { return vv; } return NULL; } if (ngx_strncmp(name->data, "cookie_", 7) == 0) { if (ngx_http_variable_cookie(r, vv, (uintptr_t) name) == NGX_OK) { return vv; } return NULL; } if (ngx_strncmp(name->data, "arg_", 4) == 0) { if (ngx_http_variable_argument(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; } 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; } 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_headers(ngx_http_request_t *r, ngx_http_variable_value_t *v, uintptr_t data) { 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 + sizeof("; ") - 1; } if (len == 0) { v->not_found = 1; return NGX_OK; } len -= sizeof("; ") - 1; 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++ = ';'; *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; } 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; struct sockaddr_in *sin; #if (NGX_HAVE_INET6) struct sockaddr_in6 *sin6; #endif 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; } switch (r->connection->sockaddr->sa_family) { #if (NGX_HAVE_INET6) case AF_INET6: sin6 = (struct sockaddr_in6 *) r->connection->sockaddr; port = ntohs(sin6->sin6_port); break; #endif default: /* AF_INET */ sin = (struct sockaddr_in *) r->connection->sockaddr; port = ntohs(sin->sin_port); break; } 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; struct sockaddr_in *sin; #if (NGX_HAVE_INET6) struct sockaddr_in6 *sin6; #endif 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; } switch (r->connection->local_sockaddr->sa_family) { #if (NGX_HAVE_INET6) case AF_INET6: sin6 = (struct sockaddr_in6 *) r->connection->local_sockaddr; port = ntohs(sin6->sin6_port); break; #endif default: /* AF_INET */ sin = (struct sockaddr_in *) r->connection->local_sockaddr; port = ntohs(sin->sin_port); break; } 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 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_conf_full_name((ngx_cycle_t *) ngx_cycle, &path, 0) != 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) { size_t len; ngx_str_t path; ngx_http_core_loc_conf_t *clcf; u_char real[NGX_MAX_PATH]; 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_conf_full_name((ngx_cycle_t *) ngx_cycle, &path, 0) != NGX_OK) { return NGX_ERROR; } } if (ngx_realpath(path.data, 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) { return NGX_ERROR; } v->len = len; v->valid = 1; v->no_cacheable = 0; v->not_found = 0; ngx_memcpy(v->data, real, len); 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_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_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("Last-Modified: 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->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, *next; 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; } next = cl->next->buf; len = (buf->last - buf->pos) + (next->last - next->pos); p = ngx_pnalloc(r->pool, len); if (p == NULL) { return NGX_ERROR; } v->data = p; p = ngx_cpymem(p, buf->pos, buf->last - buf->pos); ngx_memcpy(p, next->pos, next->last - next->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_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; } 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; 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; re->name = rc->pattern; 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_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, "http regex set $%V to \"%*s\"", &v[index].name, vv->len, vv->data); } #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_int_t rc; 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); 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; } for (v = ngx_http_core_variables; v->name.len; v++) { rc = ngx_hash_add_key(cmcf->variables_keys, &v->name, v, NGX_HASH_READONLY_KEY); if (rc == NGX_OK) { continue; } if (rc == NGX_BUSY) { ngx_conf_log_error(NGX_LOG_EMERG, cf, 0, "conflicting variable name \"%V\"", &v->name); } return NGX_ERROR; } return NGX_OK; } ngx_int_t ngx_http_variables_init_vars(ngx_conf_t *cf) { ngx_uint_t i, n; ngx_hash_key_t *key; ngx_hash_init_t hash; ngx_http_variable_t *v, *av; 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; 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 (av->get_handler && 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; goto next; } } if (ngx_strncmp(v[i].name.data, "http_", 5) == 0) { v[i].get_handler = ngx_http_variable_unknown_header_in; v[i].data = (uintptr_t) &v[i].name; continue; } if (ngx_strncmp(v[i].name.data, "sent_http_", 10) == 0) { v[i].get_handler = ngx_http_variable_unknown_header_out; v[i].data = (uintptr_t) &v[i].name; continue; } if (ngx_strncmp(v[i].name.data, "upstream_http_", 14) == 0) { v[i].get_handler = ngx_http_upstream_header_variable; v[i].data = (uintptr_t) &v[i].name; v[i].flags = NGX_HTTP_VAR_NOCACHEABLE; continue; } if (ngx_strncmp(v[i].name.data, "cookie_", 7) == 0) { v[i].get_handler = ngx_http_variable_cookie; v[i].data = (uintptr_t) &v[i].name; continue; } if (ngx_strncmp(v[i].name.data, "arg_", 4) == 0) { v[i].get_handler = ngx_http_variable_argument; v[i].data = (uintptr_t) &v[i].name; v[i].flags = NGX_HTTP_VAR_NOCACHEABLE; continue; } 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; }