X-Git-Url: http://git.vanrenterghem.biz/git.ikiwiki.info.git/blobdiff_plain/85aff81cfe50f677ca0e1c307bd55c336ea73288..4d166acccbd9c46b92bbda93a5e0876d4619afab:/doc/plugins/contrib/unixauth.mdwn?ds=sidebyside diff --git a/doc/plugins/contrib/unixauth.mdwn b/doc/plugins/contrib/unixauth.mdwn index 6cdf87f6a..6108ebfae 100644 --- a/doc/plugins/contrib/unixauth.mdwn +++ b/doc/plugins/contrib/unixauth.mdwn @@ -3,17 +3,21 @@ This plugin authenticates users against the Unix user database. It presents a similar UI to [[plugins/passwordauth]], but simpler, as there's no need to be able to register or change one's password. -To authenticate, either [checkpassword](http://cr.yp.to/checkpwd.html) or [pwauth](http://www.unixpapa.com/pwauth/) must be installed and configured. `checkpassword` is strongly preferred. If your web server runs as an unprivileged user -- as it darn well should! -- then `checkpassword` needs to be setuid root. Other checkpassword implementations are available, notably [checkpassword-pam](http://checkpasswd-pam.sourceforge.net/). +To authenticate, either [checkpassword](http://cr.yp.to/checkpwd.html) or [pwauth](http://www.unixpapa.com/pwauth/) must be installed and configured. `checkpassword` is strongly preferred. If your web server runs as an unprivileged user -- as it darn well should! -- then `checkpassword` needs to be setuid root. (Or your ikiwiki CGI wrapper, I guess, but don't do that.) Other checkpassword implementations are available, notably [checkpassword-pam](http://checkpasswd-pam.sourceforge.net/). Config variables that affect the behavior of `unixauth`: * `unixauth_type`: defaults to unset, can be "checkpassword" or "pwauth" * `unixauth_command`: defaults to unset, should contain the full path and any arguments -* `unixauth_sslrequire`: defaults to 1, can be 0 -* `sslcookie`: needs to be 1 if `unixauth_sslrequire` is 1 (perhaps this should be done automatically?) +* `unixauth_requiressl`: defaults to 1, can be 0 +* `sslcookie`: needs to be 1 if `unixauth_requiressl` is 1 (perhaps this should be done automatically?) __Security__: [As with passwordauth](/security/#index14h2), be wary of sending usernames and passwords in cleartext. Unlike passwordauth, sniffing `unixauth` credentials can get an attacker much further than mere wiki access. Therefore, this plugin defaults to not even _displaying_ the login form fields unless we're running under SSL. Nobody should be able to do anything remotely dumb until the admin has done at least a little thinking. After that, dumb things are always possible. ;-) +`unixauth` needs the `HTTPS` environment variable, available in ikiwiki 2.67 or later (fixed in #[502047](http://bugs.debian.org/502047)), without which it fails closed. + +The plugin has not been tested with newer versions of ikiwiki. [[schmonz]] hopes to have time to polish this plugin soon. + [[!toggle id="code" text="unixauth.pm"]] [[!toggleable id="code" text=""" @@ -26,16 +30,47 @@ __Security__: [As with passwordauth](/security/#index14h2), be wary of sending u use strict; use IkiWiki 2.00; - sub import { #{{{ + sub import { + hook(type => "getsetup", id => "unixauth", call => \&getsetup); hook(type => "formbuilder_setup", id => "unixauth", call => \&formbuilder_setup); hook(type => "formbuilder", id => "unixauth", call => \&formbuilder); hook(type => "sessioncgi", id => "unixauth", call => \&sessioncgi); - } # }}} + } + + sub getsetup () { + return + unixauth_type => { + type => "string", + example => "checkpassword", + description => "type of authenticator; can be 'checkpassword' or 'pwauth'", + safe => 0, + rebuild => 1, + }, + unixauth_command => { + type => "string", + example => "/path/to/checkpassword", + description => "full path and any arguments", + safe => 0, + rebuild => 1, + }, + unixauth_requiressl => { + type => "boolean", + example => "1", + description => "require SSL? strongly recommended", + safe => 0, + rebuild => 1, + }, + plugin => { + description => "Unix user authentication", + safe => 0, + rebuild => 1, + }, + } # Checks if a string matches a user's password, and returns true or false. - sub checkpassword ($$;$) { #{{{ + sub checkpassword ($$;$) { my $user=shift; my $password=shift; my $field=shift || "password"; @@ -80,9 +115,9 @@ __Security__: [As with passwordauth](/security/#index14h2), be wary of sending u } return $ret; - } #}}} + } - sub formbuilder_setup (@) { #{{{ + sub formbuilder_setup (@) { my %params=@_; my $form=$params{form}; @@ -94,9 +129,10 @@ __Security__: [As with passwordauth](/security/#index14h2), be wary of sending u if (! exists $config{unixauth_requiressl}) { $config{unixauth_requiressl} = 1; } - if ($config{unixauth_requiressl} && \ - (! $config{sslcookie} || ! exists $ENV{'HTTPS'})) { - die("SSL required to login. Contact your administrator."); + if ($config{unixauth_requiressl}) { + if ((! $config{sslcookie}) || (! exists $ENV{'HTTPS'})) { + die("SSL required to login. Contact your administrator.
"); + } } if ($form->title eq "signin") { @@ -152,7 +188,7 @@ __Security__: [As with passwordauth](/security/#index14h2), be wary of sending u } } - sub formbuilder (@) { #{{{ + sub formbuilder (@) { my %params=@_; my $form=$params{form}; @@ -173,12 +209,12 @@ __Security__: [As with passwordauth](/security/#index14h2), be wary of sending u my $user_name=$form->field('name'); } } - } #}}} + } - sub sessioncgi ($$) { #{{{ + sub sessioncgi ($$) { my $q=shift; my $session=shift; - } #}}} + } 1