Module ngx_http_auth_request_module

Example Configuration
Directives
     auth_request
     auth_request_set

The ngx_http_auth_request_module module (1.5.4+) implements client authorization based on the result of a subrequest. If the subrequest returns a 2xx response code, the access is allowed. If it returns 401 or 403, the access is denied with the corresponding error code. Any other response code returned by the subrequest is considered an error.

For the 401 error, the client also receives the “WWW-Authenticate” header from the subrequest response.

This module is not built by default, it should be enabled with the --with-http_auth_request_module configuration parameter.

The module may be combined with other access modules, such as ngx_http_access_module and ngx_http_auth_basic_module, via the satisfy directive.

Currently, responses to authorization subrequests cannot be cached (using proxy_cache, proxy_store, etc.).

Example Configuration

location /private/ {
    auth_request /auth;
    ...
}

location = /auth {
    proxy_pass ...
    proxy_pass_request_body off;
    proxy_set_header Content-Length "";
    proxy_set_header X-Original-URI $request_uri;
}

Directives

Syntax: auth_request uri | off;
Default:
auth_request off;
Context: http, server, location

Enables authorization based on the result of a subrequest and sets the URI to which the subrequest will be sent.

Syntax: auth_request_set variable value;
Default:
Context: http, server, location

Sets the request variable to the given value after the authorization request completes. The value may contain variables from the authorization request, such as $upstream_http_*.