From 5c0e56d149c6b33d010561f64f583e7ad1c529da Mon Sep 17 00:00:00 2001
From: Amitai Schlair <schmonz@magnetic-babysitter.(none)>
Date: Fri, 21 Aug 2009 22:51:12 -0400
Subject: [PATCH] Put old unixauth plugin under git control. Needs some serious
 attention.

---
 IkiWiki/Plugin/unixauth.pm | 195 +++++++++++++++++++++++++++++++++++++
 1 file changed, 195 insertions(+)
 create mode 100644 IkiWiki/Plugin/unixauth.pm

diff --git a/IkiWiki/Plugin/unixauth.pm b/IkiWiki/Plugin/unixauth.pm
new file mode 100644
index 000000000..4f0cb4dd2
--- /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
-- 
2.26.2