mirror of
https://github.com/nginx/nginx.git
synced 2024-12-15 13:28:59 +08:00
5192b3651f
*) Feature: the "limit_rate" directive is supported in in proxy and
FastCGI mode.
*) Feature: the "X-Accel-Limit-Rate" response header line is supported
in proxy and FastCGI mode.
*) Feature: the "break" directive.
*) Feature: the "log_not_found" directive.
*) Bugfix: the response status code was not changed when request was
redirected by the ""X-Accel-Redirect" header line.
*) Bugfix: the variables set by the "set" directive could not be used
in SSI.
*) Bugfix: the segmentation fault may occurred if the SSI page has more
than one remote subrequest.
*) Bugfix: nginx treated the backend response as invalid if the status
line in the header was transferred in two packets; the bug had
appeared in 0.1.29.
*) Feature: the "ssi_types" directive.
*) Feature: the "autoindex_exact_size" directive.
*) Bugfix: the ngx_http_autoindex_module did not support the long file
names in UTF-8.
*) Feature: the IMAP/POP3 proxy.
758 lines
19 KiB
C
758 lines
19 KiB
C
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/*
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* Copyright (C) Igor Sysoev
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*/
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#include <ngx_config.h>
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#include <ngx_core.h>
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#include <ngx_event.h>
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#include <ngx_http.h>
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static ngx_http_variable_value_t *
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ngx_http_variable_request(ngx_http_request_t *r, uintptr_t data);
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static ngx_http_variable_value_t *
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ngx_http_variable_header(ngx_http_request_t *r, uintptr_t data);
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static ngx_http_variable_value_t *
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ngx_http_variable_headers(ngx_http_request_t *r, uintptr_t data);
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static ngx_http_variable_value_t *
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ngx_http_variable_unknown_header(ngx_http_request_t *r, uintptr_t data);
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static ngx_http_variable_value_t *
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ngx_http_variable_host(ngx_http_request_t *r, uintptr_t data);
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static ngx_http_variable_value_t *
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ngx_http_variable_remote_addr(ngx_http_request_t *r, uintptr_t data);
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static ngx_http_variable_value_t *
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ngx_http_variable_remote_port(ngx_http_request_t *r, uintptr_t data);
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static ngx_http_variable_value_t *
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ngx_http_variable_server_addr(ngx_http_request_t *r, uintptr_t data);
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static ngx_http_variable_value_t *
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ngx_http_variable_server_port(ngx_http_request_t *r, uintptr_t data);
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static ngx_http_variable_value_t *
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ngx_http_variable_document_root(ngx_http_request_t *r, uintptr_t data);
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static ngx_http_variable_value_t *
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ngx_http_variable_request_filename(ngx_http_request_t *r, uintptr_t data);
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/*
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* TODO:
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* Apache CGI: AUTH_TYPE, PATH_INFO (null), PATH_TRANSLATED
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* REMOTE_HOST (null), REMOTE_IDENT (null),
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* SERVER_SOFTWARE
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*
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* Apache SSI: DATE_GMT, DOCUMENT_NAME, LAST_MODIFIED,
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* USER_NAME (file owner)
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*/
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static ngx_http_variable_t ngx_http_core_variables[] = {
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{ ngx_string("http_host"), ngx_http_variable_header,
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offsetof(ngx_http_request_t, headers_in.host), 0 },
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{ ngx_string("http_user_agent"), ngx_http_variable_header,
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offsetof(ngx_http_request_t, headers_in.user_agent), 0 },
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{ ngx_string("http_referer"), ngx_http_variable_header,
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offsetof(ngx_http_request_t, headers_in.referer), 0 },
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#if (NGX_HTTP_GZIP)
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{ ngx_string("http_via"), ngx_http_variable_header,
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offsetof(ngx_http_request_t, headers_in.via), 0 },
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#endif
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#if (NGX_HTTP_PROXY)
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{ ngx_string("http_x_forwarded_for"), ngx_http_variable_header,
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offsetof(ngx_http_request_t, headers_in.x_forwarded_for), 0 },
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#endif
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{ ngx_string("http_cookie"), ngx_http_variable_headers,
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offsetof(ngx_http_request_t, headers_in.cookies), 0 },
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{ ngx_string("content_length"), ngx_http_variable_header,
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offsetof(ngx_http_request_t, headers_in.content_length), 0 },
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{ ngx_string("content_type"), ngx_http_variable_header,
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offsetof(ngx_http_request_t, headers_in.content_type), 0 },
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{ ngx_string("host"), ngx_http_variable_host, 0, 0 },
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{ ngx_string("remote_addr"), ngx_http_variable_remote_addr, 0, 0 },
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{ ngx_string("remote_port"), ngx_http_variable_remote_port, 0, 0 },
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{ ngx_string("server_addr"), ngx_http_variable_server_addr, 0, 0 },
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{ ngx_string("server_port"), ngx_http_variable_server_port, 0, 0 },
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{ ngx_string("server_protocol"), ngx_http_variable_request,
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offsetof(ngx_http_request_t, http_protocol), 0 },
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{ ngx_string("request_uri"), ngx_http_variable_request,
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offsetof(ngx_http_request_t, unparsed_uri), 0 },
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{ ngx_string("document_uri"), ngx_http_variable_request,
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offsetof(ngx_http_request_t, uri), 0 },
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{ ngx_string("document_root"), ngx_http_variable_document_root, 0, 0 },
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{ ngx_string("query_string"), ngx_http_variable_request,
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offsetof(ngx_http_request_t, args),
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NGX_HTTP_VAR_NOCACHABLE },
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{ ngx_string("request_filename"), ngx_http_variable_request_filename, 0,
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NGX_HTTP_VAR_NOCACHABLE },
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{ ngx_string("server_name"), ngx_http_variable_request,
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offsetof(ngx_http_request_t, server_name), 0 },
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{ ngx_string("request_method"), ngx_http_variable_request,
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offsetof(ngx_http_request_t, method_name), 0 },
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{ ngx_string("remote_user"), ngx_http_variable_request,
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offsetof(ngx_http_request_t, headers_in.user), 0 },
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{ ngx_null_string, NULL, 0, 0 }
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};
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ngx_http_variable_t *
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ngx_http_add_variable(ngx_conf_t *cf, ngx_str_t *name, ngx_uint_t flags)
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{
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ngx_uint_t i;
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ngx_http_variable_t *v;
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ngx_http_core_main_conf_t *cmcf;
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cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module);
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v = cmcf->all_variables.elts;
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for (i = 0; i < cmcf->all_variables.nelts; i++) {
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if (name->len != v[i].name.len
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|| ngx_strncasecmp(name->data, v[i].name.data, name->len) != 0)
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{
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continue;
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}
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if (!(v[i].flags & NGX_HTTP_VAR_CHANGABLE)) {
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ngx_conf_log_error(NGX_LOG_EMERG, cf, 0,
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"the duplicate \"%V\" variable", name);
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return NULL;
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}
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return &v[i];
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}
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v = ngx_array_push(&cmcf->all_variables);
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if (v == NULL) {
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return NULL;
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}
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v->name.len = name->len;
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v->name.data = ngx_palloc(cf->pool, name->len);
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if (v->name.data == NULL) {
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return NULL;
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}
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for (i = 0; i < name->len; i++) {
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v->name.data[i] = ngx_tolower(name->data[i]);
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}
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v->handler = NULL;
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v->data = 0;
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v->flags = flags;
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return v;
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}
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ngx_int_t
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ngx_http_get_variable_index(ngx_conf_t *cf, ngx_str_t *name)
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{
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ngx_uint_t i;
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ngx_http_variable_t *v;
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ngx_http_core_main_conf_t *cmcf;
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cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module);
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v = cmcf->variables.elts;
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if (v == NULL) {
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if (ngx_array_init(&cmcf->variables, cf->pool, 4,
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sizeof(ngx_http_variable_t)) == NGX_ERROR)
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{
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return NGX_ERROR;
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}
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} else {
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for (i = 0; i < cmcf->variables.nelts; i++) {
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if (name->len != v[i].name.len
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|| ngx_strncasecmp(name->data, v[i].name.data, name->len) != 0)
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{
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continue;
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}
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return i;
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}
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}
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v = ngx_array_push(&cmcf->variables);
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if (v == NULL) {
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return NGX_ERROR;
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}
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v->name.len = name->len;
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v->name.data = ngx_palloc(cf->pool, name->len);
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if (v->name.data == NULL) {
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return NGX_ERROR;
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}
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for (i = 0; i < name->len; i++) {
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v->name.data[i] = ngx_tolower(name->data[i]);
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}
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v->handler = NULL;
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v->data = 0;
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v->flags = 0;
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return cmcf->variables.nelts - 1;
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}
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ngx_http_variable_value_t *
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ngx_http_get_indexed_variable(ngx_http_request_t *r, ngx_uint_t index)
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{
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ngx_http_variable_t *v;
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ngx_http_variable_value_t *vv;
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ngx_http_core_main_conf_t *cmcf;
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cmcf = ngx_http_get_module_main_conf(r, ngx_http_core_module);
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if (cmcf->variables.elts == NULL || cmcf->variables.nelts <= index) {
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ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0,
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"unknown variable index: %d", index);
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return NULL;
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}
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if (r->variables && r->variables[index]) {
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return r->variables[index];
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}
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v = cmcf->variables.elts;
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vv = v[index].handler(r, v[index].data);
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if (r->variables == NULL) {
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r->variables = ngx_pcalloc(r->pool, cmcf->variables.nelts
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* sizeof(ngx_http_variable_value_t *));
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if (r->variables == NULL) {
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return NULL;
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}
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}
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if (!(v[index].flags & NGX_HTTP_VAR_NOCACHABLE)) {
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r->variables[index] = vv;
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}
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return vv;
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}
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ngx_http_variable_value_t *
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ngx_http_get_variable(ngx_http_request_t *r, ngx_str_t *name)
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{
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ngx_uint_t i, key;
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ngx_http_variable_t *v;
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ngx_http_core_main_conf_t *cmcf;
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cmcf = ngx_http_get_module_main_conf(r, ngx_http_core_module);
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key = 0;
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for (i = 0; i < name->len; i++) {
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key += name->data[i];
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}
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key %= cmcf->variables_hash.hash_size;
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v = (ngx_http_variable_t *) cmcf->variables_hash.buckets;
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if (v[key].name.len == name->len
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&& ngx_strncmp(v[key].name.data, name->data, name->len) == 0)
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{
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if (v[key].flags & NGX_HTTP_VAR_INDEXED) {
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return ngx_http_get_indexed_variable(r, v[key].data);
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} else {
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return v[key].handler(r, v[key].data);
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}
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}
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if (ngx_strncmp(name->data, "http_", 5) == 0) {
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return ngx_http_variable_unknown_header(r, (uintptr_t) name);
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}
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ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
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"unknown \"%V\" variable", name);
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return NGX_HTTP_VAR_NOT_FOUND;
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}
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static ngx_http_variable_value_t *
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ngx_http_variable_request(ngx_http_request_t *r, uintptr_t data)
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{
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ngx_str_t *s;
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ngx_http_variable_value_t *vv;
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s = (ngx_str_t *) ((char *) r + data);
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if (s->data == NULL) {
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return NGX_HTTP_VAR_NOT_FOUND;
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}
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vv = ngx_palloc(r->pool, sizeof(ngx_http_variable_value_t));
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if (vv == NULL) {
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return NULL;
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}
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vv->value = 0;
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vv->text = *s;
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return vv;
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}
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static ngx_http_variable_value_t *
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ngx_http_variable_header(ngx_http_request_t *r, uintptr_t data)
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{
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ngx_table_elt_t *h;
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ngx_http_variable_value_t *vv;
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h = *(ngx_table_elt_t **) ((char *) r + data);
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if (h == NULL) {
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return NGX_HTTP_VAR_NOT_FOUND;
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}
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vv = ngx_palloc(r->pool, sizeof(ngx_http_variable_value_t));
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if (vv == NULL) {
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return NULL;
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}
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vv->value = 0;
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vv->text = h->value;
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return vv;
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}
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static ngx_http_variable_value_t *
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ngx_http_variable_headers(ngx_http_request_t *r, uintptr_t data)
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{
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u_char *p;
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ngx_uint_t i;
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ngx_array_t *a;
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ngx_table_elt_t **h;
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ngx_http_variable_value_t *vv;
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a = (ngx_array_t *) ((char *) r + data);
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if (a->nelts == 0) {
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return NGX_HTTP_VAR_NOT_FOUND;
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}
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vv = ngx_palloc(r->pool, sizeof(ngx_http_variable_value_t));
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if (vv == NULL) {
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return NULL;
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}
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vv->value = 0;
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h = a->elts;
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if (a->nelts == 1) {
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vv->text = (*h)->value;
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return vv;
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}
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vv->text.len = (size_t) - (ssize_t) (sizeof("; ") - 1);
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for (i = 0; i < a->nelts; i++) {
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vv->text.len += h[i]->value.len + sizeof("; ") - 1;
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}
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vv->text.data = ngx_palloc(r->pool, vv->text.len);
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if (vv->text.data == NULL) {
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return NULL;
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}
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p = vv->text.data;
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for (i = 0; /* void */ ; i++) {
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p = ngx_cpymem(p, h[i]->value.data, h[i]->value.len);
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if (i == a->nelts - 1) {
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break;
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}
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*p++ = ';'; *p++ = ' ';
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}
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return vv;
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}
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static ngx_http_variable_value_t *
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ngx_http_variable_unknown_header(ngx_http_request_t *r, uintptr_t data)
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{
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ngx_str_t *var = (ngx_str_t *) data;
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u_char ch;
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ngx_uint_t i, n;
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ngx_list_part_t *part;
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ngx_table_elt_t *header;
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ngx_http_variable_value_t *vv;
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part = &r->headers_in.headers.part;
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header = part->elts;
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for (i = 0; /* void */ ; i++) {
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if (i >= part->nelts) {
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if (part->next == NULL) {
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break;
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}
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part = part->next;
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header = part->elts;
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i = 0;
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}
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for (n = 0; n + 5 < var->len && n < header[i].key.len; n++) {
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ch = header[i].key.data[n];
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if (ch >= 'A' && ch <= 'Z') {
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ch |= 0x20;
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} else if (ch == '-') {
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ch = '_';
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}
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if (var->data[n + 5] != ch) {
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break;
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}
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}
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if (n + 5 == var->len) {
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vv = ngx_palloc(r->pool, sizeof(ngx_http_variable_value_t));
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if (vv == NULL) {
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return NULL;
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}
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vv->value = 0;
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vv->text = header[i].value;
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return vv;
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}
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}
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return NGX_HTTP_VAR_NOT_FOUND;
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}
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static ngx_http_variable_value_t *
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ngx_http_variable_host(ngx_http_request_t *r, uintptr_t data)
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{
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ngx_http_variable_value_t *vv;
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vv = ngx_palloc(r->pool, sizeof(ngx_http_variable_value_t));
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if (vv == NULL) {
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return NULL;
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}
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vv->value = 0;
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if (r->headers_in.host) {
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vv->text.len = r->headers_in.host_name_len;
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vv->text.data = r->headers_in.host->value.data;
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} else {
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vv->text = r->server_name;
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}
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return vv;
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}
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static ngx_http_variable_value_t *
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ngx_http_variable_remote_addr(ngx_http_request_t *r, uintptr_t data)
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{
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ngx_http_variable_value_t *vv;
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vv = ngx_palloc(r->pool, sizeof(ngx_http_variable_value_t));
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if (vv == NULL) {
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return NULL;
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}
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vv->value = 0;
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vv->text = r->connection->addr_text;
|
|
|
|
return vv;
|
|
}
|
|
|
|
|
|
static ngx_http_variable_value_t *
|
|
ngx_http_variable_remote_port(ngx_http_request_t *r, uintptr_t data)
|
|
{
|
|
ngx_uint_t port;
|
|
struct sockaddr_in *sin;
|
|
ngx_http_variable_value_t *vv;
|
|
|
|
vv = ngx_palloc(r->pool, sizeof(ngx_http_variable_value_t));
|
|
if (vv == NULL) {
|
|
return NULL;
|
|
}
|
|
|
|
vv->value = 0;
|
|
vv->text.len = 0;
|
|
|
|
vv->text.data = ngx_palloc(r->pool, sizeof("65535") - 1);
|
|
if (vv->text.data == NULL) {
|
|
return NULL;
|
|
}
|
|
|
|
/* AF_INET only */
|
|
|
|
if (r->connection->sockaddr->sa_family == AF_INET) {
|
|
sin = (struct sockaddr_in *) r->connection->sockaddr;
|
|
|
|
port = ntohs(sin->sin_port);
|
|
|
|
if (port > 0 && port < 65536) {
|
|
vv->value = port;
|
|
vv->text.len = ngx_sprintf(vv->text.data, "%ui", port)
|
|
- vv->text.data;
|
|
}
|
|
}
|
|
|
|
return vv;
|
|
}
|
|
|
|
|
|
static ngx_http_variable_value_t *
|
|
ngx_http_variable_server_addr(ngx_http_request_t *r, uintptr_t data)
|
|
{
|
|
socklen_t len;
|
|
ngx_connection_t *c;
|
|
struct sockaddr_in sin;
|
|
ngx_http_variable_value_t *vv;
|
|
|
|
vv = ngx_palloc(r->pool, sizeof(ngx_http_variable_value_t));
|
|
if (vv == NULL) {
|
|
return NULL;
|
|
}
|
|
|
|
vv->value = 0;
|
|
|
|
vv->text.data = ngx_palloc(r->pool, INET_ADDRSTRLEN);
|
|
if (vv->text.data == NULL) {
|
|
return NULL;
|
|
}
|
|
|
|
c = r->connection;
|
|
|
|
if (r->in_addr == 0) {
|
|
len = sizeof(struct sockaddr_in);
|
|
if (getsockname(c->fd, (struct sockaddr *) &sin, &len) == -1) {
|
|
ngx_log_error(NGX_LOG_CRIT, c->log,
|
|
ngx_socket_errno, "getsockname() failed");
|
|
return NULL;
|
|
}
|
|
|
|
r->in_addr = sin.sin_addr.s_addr;
|
|
}
|
|
|
|
vv->text.len = ngx_inet_ntop(c->listening->family, &r->in_addr,
|
|
vv->text.data, INET_ADDRSTRLEN);
|
|
|
|
return vv;
|
|
}
|
|
|
|
|
|
static ngx_http_variable_value_t *
|
|
ngx_http_variable_server_port(ngx_http_request_t *r, uintptr_t data)
|
|
{
|
|
ngx_http_variable_value_t *vv;
|
|
|
|
vv = ngx_palloc(r->pool, sizeof(ngx_http_variable_value_t));
|
|
if (vv == NULL) {
|
|
return NULL;
|
|
}
|
|
|
|
vv->value = r->port;
|
|
vv->text.len = r->port_text->len - 1;
|
|
vv->text.data = r->port_text->data + 1;
|
|
|
|
return vv;
|
|
}
|
|
|
|
|
|
static ngx_http_variable_value_t *
|
|
ngx_http_variable_document_root(ngx_http_request_t *r, uintptr_t data)
|
|
{
|
|
ngx_http_core_loc_conf_t *clcf;
|
|
ngx_http_variable_value_t *vv;
|
|
|
|
vv = ngx_palloc(r->pool, sizeof(ngx_http_variable_value_t));
|
|
if (vv == NULL) {
|
|
return NULL;
|
|
}
|
|
|
|
clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
|
vv->value = 0;
|
|
vv->text = clcf->root;
|
|
|
|
return vv;
|
|
}
|
|
|
|
|
|
static ngx_http_variable_value_t *
|
|
ngx_http_variable_request_filename(ngx_http_request_t *r, uintptr_t data)
|
|
{
|
|
u_char *p;
|
|
ngx_http_core_loc_conf_t *clcf;
|
|
ngx_http_variable_value_t *vv;
|
|
|
|
vv = ngx_palloc(r->pool, sizeof(ngx_http_variable_value_t));
|
|
if (vv == NULL) {
|
|
return NULL;
|
|
}
|
|
|
|
vv->value = 0;
|
|
|
|
clcf = ngx_http_get_module_loc_conf(r, ngx_http_core_module);
|
|
|
|
if (!clcf->alias) {
|
|
vv->text.len = clcf->root.len + r->uri.len;
|
|
vv->text.data = ngx_palloc(r->pool, vv->text.len);
|
|
if (vv->text.data == NULL) {
|
|
return NULL;
|
|
}
|
|
|
|
p = ngx_cpymem(vv->text.data, clcf->root.data, clcf->root.len);
|
|
ngx_memcpy(p, r->uri.data, r->uri.len + 1);
|
|
|
|
} else {
|
|
vv->text.len = clcf->root.len + r->uri.len + 2 - clcf->name.len;
|
|
vv->text.data = ngx_palloc(r->pool, vv->text.len);
|
|
if (vv->text.data == NULL) {
|
|
return NULL;
|
|
}
|
|
|
|
p = ngx_cpymem(vv->text.data, clcf->root.data, clcf->root.len);
|
|
ngx_memcpy(p, r->uri.data + clcf->name.len,
|
|
r->uri.len + 1 - clcf->name.len);
|
|
}
|
|
|
|
return vv;
|
|
}
|
|
|
|
|
|
ngx_int_t
|
|
ngx_http_variables_add_core_vars(ngx_conf_t *cf)
|
|
{
|
|
ngx_http_variable_t *v, *cv;
|
|
ngx_http_core_main_conf_t *cmcf;
|
|
|
|
cmcf = ngx_http_conf_get_module_main_conf(cf, ngx_http_core_module);
|
|
|
|
if (ngx_array_init(&cmcf->all_variables, cf->pool, 32,
|
|
sizeof(ngx_http_variable_t)) == NGX_ERROR)
|
|
{
|
|
return NGX_ERROR;
|
|
}
|
|
|
|
for (cv = ngx_http_core_variables; cv->name.len; cv++) {
|
|
v = ngx_array_push(&cmcf->all_variables);
|
|
if (v == NULL) {
|
|
return NGX_ERROR;
|
|
}
|
|
|
|
*v = *cv;
|
|
}
|
|
|
|
return NGX_OK;
|
|
}
|
|
|
|
|
|
ngx_int_t
|
|
ngx_http_variables_init_vars(ngx_conf_t *cf)
|
|
{
|
|
ngx_uint_t i, n;
|
|
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;
|
|
av = cmcf->all_variables.elts;
|
|
|
|
for (i = 0; i < cmcf->variables.nelts; i++) {
|
|
|
|
for (n = 0; n < cmcf->all_variables.nelts; n++) {
|
|
|
|
if (v[i].name.len == av[n].name.len
|
|
&& ngx_strncmp(v[i].name.data, av[n].name.data, v[i].name.len)
|
|
== 0)
|
|
{
|
|
v[i].handler = av[n].handler;
|
|
v[i].data = av[n].data;
|
|
|
|
av[n].flags |= NGX_HTTP_VAR_INDEXED;
|
|
v[i].flags = av[n].flags;
|
|
|
|
goto next;
|
|
}
|
|
}
|
|
|
|
if (ngx_strncmp(v[i].name.data, "http_", 5) == 0) {
|
|
v[i].handler = ngx_http_variable_unknown_header;
|
|
v[i].data = (uintptr_t) &v[i].name;
|
|
|
|
continue;
|
|
}
|
|
|
|
ngx_log_error(NGX_LOG_EMERG, cf->log, 0,
|
|
"unknown \"%V\" variable", &v[i].name);
|
|
|
|
return NGX_ERROR;
|
|
|
|
next:
|
|
continue;
|
|
}
|
|
|
|
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, cf->log, 0,
|
|
"http variables: %ui", cmcf->variables.nelts);
|
|
|
|
|
|
/* init the all http variables hash */
|
|
|
|
cmcf->variables_hash.max_size = 500;
|
|
cmcf->variables_hash.bucket_limit = 1;
|
|
cmcf->variables_hash.bucket_size = sizeof(ngx_http_variable_t);
|
|
cmcf->variables_hash.name = "http variables";
|
|
|
|
if (ngx_hash_init(&cmcf->variables_hash, cf->pool,
|
|
cmcf->all_variables.elts, cmcf->all_variables.nelts) != NGX_OK)
|
|
{
|
|
return NGX_ERROR;
|
|
}
|
|
|
|
ngx_log_debug3(NGX_LOG_DEBUG_HTTP, cf->log, 0,
|
|
"http variables hash size: %ui for %ui values, "
|
|
"max buckets per entry: %ui",
|
|
cmcf->variables_hash.hash_size, cmcf->all_variables.nelts,
|
|
cmcf->variables_hash.min_buckets);
|
|
|
|
return NGX_OK;
|
|
}
|