|  | 275 | === Authentication for tracd behind a proxy | 
                          |  | 276 | It is convenient to provide central external authentication to your tracd instances, instead of using {{{--basic-auth}}}. There is some discussion about this in #9206. | 
                          |  | 277 |  | 
                          |  | 278 | Below is example configuration based on Apache 2.2, mod_proxy, mod_authnz_ldap. | 
                          |  | 279 |  | 
                          |  | 280 | First we bring tracd into Apache's location namespace. | 
                          |  | 281 |  | 
                          |  | 282 | {{{ | 
                          |  | 283 | <Location /project/proxified> | 
                          |  | 284 | Require ldap-group cn=somegroup, ou=Groups,dc=domain.com | 
                          |  | 285 | Require ldap-user somespecificusertoo | 
                          |  | 286 | ProxyPass http://localhost:8101/project/proxified/ | 
                          |  | 287 | # Turns out we don't really need complicated RewriteRules here at all | 
                          |  | 288 | RequestHeader set REMOTE_USER %{REMOTE_USER}s | 
                          |  | 289 | </Location> | 
                          |  | 290 | }}} | 
                          |  | 291 |  | 
                          |  | 292 | Then we need a single file plugin to recognize HTTP_REMOTE_USER header as valid authentication source. HTTP headers like '''HTTP_FOO_BAR''' will get converted to '''Foo-Bar''' during processing. Name it something like '''remote-user-auth.py''' and drop it into '''proxified/plugins''' directory: | 
                          |  | 293 | {{{ | 
                          |  | 294 | #!python | 
                          |  | 295 | from trac.core import * | 
                          |  | 296 | from trac.config import BoolOption | 
                          |  | 297 | from trac.web.api import IAuthenticator | 
                          |  | 298 |  | 
                          |  | 299 | class MyRemoteUserAuthenticator(Component): | 
                          |  | 300 |  | 
                          |  | 301 | implements(IAuthenticator) | 
                          |  | 302 |  | 
                          |  | 303 | obey_remote_user_header = BoolOption('trac', 'obey_remote_user_header', 'false', | 
                          |  | 304 | """Whether the 'Remote-User:' HTTP header is to be trusted for user logins | 
                          |  | 305 | (''since ??.??').""") | 
                          |  | 306 |  | 
                          |  | 307 | def authenticate(self, req): | 
                          |  | 308 | if self.obey_remote_user_header and req.get_header('Remote-User'): | 
                          |  | 309 | return req.get_header('Remote-User') | 
                          |  | 310 | return None | 
                          |  | 311 |  | 
                          |  | 312 | }}} | 
                          |  | 313 |  | 
                          |  | 314 | Add this new parameter to your TracIni: | 
                          |  | 315 | {{{ | 
                          |  | 316 | ... | 
                          |  | 317 | [trac] | 
                          |  | 318 | ... | 
                          |  | 319 | obey_remote_user_header = true | 
                          |  | 320 | ... | 
                          |  | 321 | }}} | 
                          |  | 322 |  | 
                          |  | 323 | Run tracd: | 
                          |  | 324 | {{{ | 
                          |  | 325 | tracd -p 8101 -r -s proxified --base-path=/project/proxified | 
                          |  | 326 | }}} | 
                          |  | 327 |  |