X-Git-Url: http://git.vanrenterghem.biz/git.ikiwiki.info.git/blobdiff_plain/297ff849b93e5a75074e321fe65500f0e091601c..43a88daa5fc23fb70c22ab4472dd293e04b7236d:/doc/plugins/httpauth.mdwn

diff --git a/doc/plugins/httpauth.mdwn b/doc/plugins/httpauth.mdwn
index fbf366291..b2f789b8e 100644
--- a/doc/plugins/httpauth.mdwn
+++ b/doc/plugins/httpauth.mdwn
@@ -2,8 +2,45 @@
 [[!tag type/auth]]
 
 This plugin allows HTTP basic authentication to be used to log into the
-wiki. To use the plugin, your web server should be set up to perform HTTP
-basic authentiation. The authenticated user will be automatically signed
-into the wiki.
+wiki. In this mode, the web browser authenticates the user by some means,
+and sets the `REMOTE_USER CGI` environment variable. This plugin trusts
+that if that variable is set, the user is authenticated.
 
-This plugin is included in ikiwiki, but is not enabled by default.
+## fully authenticated wiki
+
+One way to use the plugin is to configure your web server to require
+HTTP basic authentication for any access to the directory containing the
+wiki (and `ikiwiki.cgi`). The authenticated user will be automatically
+signed into the wiki. This method is suitable only for private wikis.
+
+## separate cgiauthurl
+
+To use httpauth for a wiki where the content is public, and where
+the `ikiwiki.cgi` needs to be usable without authentication (for searching,
+or logging in using other methods, and so on), you can configure a separate
+url that is used for authentication, via the `cgiauthurl` option in the setup
+file. This url will then be redirected to when a user chooses to log in using
+httpauth.
+
+A typical setup is to make an `auth` subdirectory, and symlink `ikiwiki.cgi` 
+into it. Then configure the web server to require authentication only for
+access to the `auth` subdirectory. Then `cgiauthurl` is pointed at this
+symlink.
+
+## using only httpauth for some pages
+
+If you want to only use httpauth for editing some pages, while allowing
+other authentication methods to be used for other pages, you can
+configure `httpauth_pagespec` in the setup file. This makes Edit
+links on pages that match the [[ikiwiki/PageSpec]] automatically use
+the `cgiauthurl`, and prevents matching pages from being edited by
+users authentication via other methods.
+
+## Using httpauth with nginx
+
+You have to pass the $remote_user variable to the CGI:
+
+    location /ikiwiki.cgi {
+        fastcgi_param REMOTE_USER $remote_user if_not_empty;
+        ....
+    }