Put old unixauth plugin under git control. Needs some serious attention.

diff --git a/IkiWiki/Plugin/unixauth.pm b/IkiWiki/Plugin/unixauth.pm
new file mode 100644 (file)
index 0000000..4f0cb4d
--- /dev/null
+++ b/IkiWiki/Plugin/unixauth.pm
@@ -0,0 +1,195 @@
+#!/usr/bin/perl
+# Ikiwiki unixauth authentication.
+package IkiWiki::Plugin::unixauth;
+
+use warnings;
+use strict;
+use IkiWiki 2.00;
+
+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 ($$;$) {
+       my $user=shift;
+       my $password=shift;
+       my $field=shift || "password";
+
+       # It's very important that the user not be allowed to log in with
+       # an empty password!
+       if (! length $password) {
+                       return 0;
+       }
+
+       my $ret=0;
+       if (! exists $config{unixauth_type}) {
+                       # admin needs to carefully think over his configuration
+                       return 0;
+       }
+       elsif ($config{unixauth_type} eq "checkpassword") {
+                       open UNIXAUTH, "|$config{unixauth_command} true 3<&0" or die("Could not run $config{unixauth_type}");
+                       print UNIXAUTH "$user\0$password\0Y123456\0";
+                       close UNIXAUTH;
+                       $ret=!($?>>8);
+       }
+       elsif ($config{unixauth_type} eq "pwauth") {
+                       open UNIXAUTH, "|$config{unixauth_command}" or die("Could not run $config{unixauth_type}");
+                       print UNIXAUTH "$user\n$password\n";
+                       close UNIXAUTH;
+                       $ret=!($?>>8);
+       }
+       else {
+                       # no such authentication type
+                       return 0;
+       }
+
+       if ($ret) {
+               my $userinfo=IkiWiki::userinfo_retrieve();
+               if (! length $user || ! defined $userinfo ||
+                       ! exists $userinfo->{$user} || ! ref $userinfo->{$user}) {
+                               IkiWiki::userinfo_setall($user, {
+                                       'email' => '',
+                                       'regdate' => time,
+                               });
+               }
+       }
+
+       return $ret;
+}
+
+sub formbuilder_setup (@) {
+       my %params=@_;
+
+       my $form=$params{form};
+       my $session=$params{session};
+       my $cgi=$params{cgi};
+
+       # if not under SSL, die before even showing a login form,
+       # unless the admin explicitly says it's fine
+       if (! exists $config{unixauth_requiressl}) {
+                       $config{unixauth_requiressl} = 1;
+       }
+       if ($config{unixauth_requiressl}) {
+               if ((! $config{sslcookie}) || (! exists $ENV{'HTTPS'})) {
+                       die("SSL required to login. Contact your administrator.<br>");
+               }
+       }
+
+       if ($form->title eq "signin") {
+                       $form->field(name => "name", required => 0);
+                       $form->field(name => "password", type => "password", required => 0);
+
+                       if ($form->submitted) {
+                                       my $submittype=$form->submitted;
+                                       # Set required fields based on how form was submitted.
+                                       my %required=(
+                                                       "Login" => [qw(name password)],
+                                       );
+                                       foreach my $opt (@{$required{$submittype}}) {
+                                                       $form->field(name => $opt, required => 1);
+                                       }
+
+                                       # Validate password against name for Login.
+                                       if ($submittype eq "Login") {
+                                                       $form->field(
+                                                                       name => "password",
+                                                                       validate => sub {
+                                                                                       checkpassword($form->field("name"), shift);
+                                                                       },
+                                                       );
+                                       }
+
+                                       # XXX is this reachable? looks like no
+                                       elsif ($submittype eq "Login") {
+                                                       $form->field(
+                                                                       name => "name",
+                                                                       validate => sub {
+                                                                                       my $name=shift;
+                                                                                       length $name &&
+                                                                                       IkiWiki::userinfo_get($name, "regdate");
+                                                                       },
+                                                       );
+                                       }
+                       }
+                       else {
+                                       # First time settings.
+                                       $form->field(name => "name");
+                                       if ($session->param("name")) {
+                                                       $form->field(name => "name", value => $session->param("name"));
+                                       }
+                       }
+       }
+       elsif ($form->title eq "preferences") {
+               $form->field(name => "name", disabled => 1,
+                               value => $session->param("name"), force => 1,
+                               fieldset => "login");
+               $form->field(name => "password", disabled => 1, type => "password",
+                               fieldset => "login"),
+       }
+}
+
+sub formbuilder (@) {
+       my %params=@_;
+
+       my $form=$params{form};
+       my $session=$params{session};
+       my $cgi=$params{cgi};
+       my $buttons=$params{buttons};
+
+       if ($form->title eq "signin") {
+               if ($form->submitted && $form->validate) {
+                       if ($form->submitted eq 'Login') {
+                               $session->param("name", $form->field("name"));
+                               IkiWiki::cgi_postsignin($cgi, $session);
+                       }
+               }
+       }
+       elsif ($form->title eq "preferences") {
+               if ($form->submitted eq "Save Preferences" && $form->validate) {
+                       my $user_name=$form->field('name');
+               }
+       }
+}
+
+sub sessioncgi ($$) {
+       my $q=shift;
+       my $session=shift;
+}
+
+1