[[!tag type/auth]]
This plugin allows HTTP basic authentication to be used to log 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.
## fully authenticated wiki
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;
+ ....
+ }