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Wordpress authentication for Gallery3
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mp2300 authored and mp2300 committed Feb 21, 2010
1 parent 0da1677 commit 5296c55
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63 changes: 63 additions & 0 deletions modules/wordpress_auth/config/identity.php
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<?php defined('SYSPATH') or die('No direct script access.');
/**
* Gallery - a web based photo album viewer and editor
* Copyright (C) 2000-2009 Bharat Mediratta
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or (at
* your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
*/
/*
* @package Wordpress_auth
*
* Use Wordpress installation as authentication source.
* Wordpress Roles are mappee to Gallery groups
*
* The module comes with two drivers:
* wordpressdb: Connect directly to the wordpress database defined in
* $config['wordpress_auth']['params']['wp_database'] and authenticate
*
* wordpressfile: Load the entire Wordpress codebase and use Wordpress API
* functions to authenticate users. The path to the Wordpress basedir must be
* defined in $config['wordpress_auth']['params']['path'] and this file must
* be included from the gallery index.php file
*
* wordpressdb is fastest but does only work with straight Wordpress database.
* If other authentications plugins have been added to wordpress, then the
* wordpressfile driver must be used.
*
*/


$config['wordpress_auth'] = array(
'driver' => 'wordpressdb',
'allow_updates' => false,
'params' => array(
'wp_database' => array(
'username' => 'user',
'password' => 'pass',
'database' => 'dbname',
'host' => 'localhost',
'table_prefix' => 'wp_',
'charset' => 'utf8'
),
'path' => 'path/to/local/wordpress/installation'
)
);


// load code
if ($config['wordpress_auth']['driver'] == 'wordpressfile') {
require_once $config['wordpress_auth']['params']['path'] . 'wp-load.php';
require_once $config['wordpress_auth']['params']['path'] . 'wp-admin/includes/user.php';
}
64 changes: 64 additions & 0 deletions modules/wordpress_auth/helpers/wordpress_auth_installer.php
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<?php defined("SYSPATH") or die("No direct script access.");
/**
* Gallery - a web based photo album viewer and editor
* Copyright (C) 2000-2009 Bharat Mediratta
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or (at
* your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
*/
class wordpress_auth_installer {
static function can_activate() {
$messages = array();
try {
// load config
require MODPATH . 'wordpress_auth/config/identity.php';
// create instance and fetch admin user
$driver = ucfirst($config['wordpress_auth']['driver']);
$filename = MODPATH . 'wordpress_auth/libraries/drivers/IdentityProvider/' . $driver . '.php';
$classname = 'IdentityProvider_' . $driver . '_Driver';
require($filename);
$wordpress_auth_provider = new $classname($config['wordpress_auth']['params']);
$admin = $wordpress_auth_provider->admin_user();
// Everything is fine
$messages["warn"][] = IdentityProvider::confirmation_message();
}
catch (Exception $e) {
$messages["error"][] =
'Cannot install Wordpress identity provider. Error: ' . $e->getMessage();
}
return $messages;
}

static function install() {
IdentityProvider::change_provider('wordpress_auth');
}

static function initialize() {
module::set_version('wordpress_auth', 1);
$root = item::root();
foreach (IdentityProvider::instance()->groups() as $group) {
module::event("group_created", $group);
access::allow($group, "view", $root);
access::allow($group, "view_full", $root);
}
}

static function uninstall() {
// Delete all groups so that we give other modules an opportunity to clean up
$wordpress_auth_provider = new IdentityProvider("wordpress_auth");
foreach ($wordpress_auth_provider->groups() as $group) {
module::event("group_deleted", $group);
}
}
}
258 changes: 258 additions & 0 deletions modules/wordpress_auth/libraries/PasswordHash.php
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<?php
/**
* Portable PHP password hashing framework.
* @package phpass
* @since 2.5
* @version 0.1
* @link http://www.openwall.com/phpass/
*/

#
# Written by Solar Designer <solar at openwall.com> in 2004-2006 and placed in
# the public domain.
#
# There's absolutely no warranty.
#
# Please be sure to update the Version line if you edit this file in any way.
# It is suggested that you leave the main version number intact, but indicate
# your project name (after the slash) and add your own revision information.
#
# Please do not change the "private" password hashing method implemented in
# here, thereby making your hashes incompatible. However, if you must, please
# change the hash type identifier (the "$P$") to something different.
#
# Obviously, since this code is in the public domain, the above are not
# requirements (there can be none), but merely suggestions.
#

/**
* Portable PHP password hashing framework.
*
* @package phpass
* @version 0.1 / genuine
* @link http://www.openwall.com/phpass/
* @since 2.5
*/
class PasswordHash {
var $itoa64;
var $iteration_count_log2;
var $portable_hashes;
var $random_state;

function PasswordHash($iteration_count_log2, $portable_hashes)
{
$this->itoa64 = './0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz';

if ($iteration_count_log2 < 4 || $iteration_count_log2 > 31)
$iteration_count_log2 = 8;
$this->iteration_count_log2 = $iteration_count_log2;

$this->portable_hashes = $portable_hashes;

$this->random_state = microtime() . (function_exists('getmypid') ? getmypid() : '') . uniqid(rand(), TRUE);

}

function get_random_bytes($count)
{
$output = '';
if (($fh = @fopen('/dev/urandom', 'rb'))) {
$output = fread($fh, $count);
fclose($fh);
}

if (strlen($output) < $count) {
$output = '';
for ($i = 0; $i < $count; $i += 16) {
$this->random_state =
md5(microtime() . $this->random_state);
$output .=
pack('H*', md5($this->random_state));
}
$output = substr($output, 0, $count);
}

return $output;
}

function encode64($input, $count)
{
$output = '';
$i = 0;
do {
$value = ord($input[$i++]);
$output .= $this->itoa64[$value & 0x3f];
if ($i < $count)
$value |= ord($input[$i]) << 8;
$output .= $this->itoa64[($value >> 6) & 0x3f];
if ($i++ >= $count)
break;
if ($i < $count)
$value |= ord($input[$i]) << 16;
$output .= $this->itoa64[($value >> 12) & 0x3f];
if ($i++ >= $count)
break;
$output .= $this->itoa64[($value >> 18) & 0x3f];
} while ($i < $count);

return $output;
}

function gensalt_private($input)
{
$output = '$P$';
$output .= $this->itoa64[min($this->iteration_count_log2 +
((PHP_VERSION >= '5') ? 5 : 3), 30)];
$output .= $this->encode64($input, 6);

return $output;
}

function crypt_private($password, $setting)
{
$output = '*0';
if (substr($setting, 0, 2) == $output)
$output = '*1';

if (substr($setting, 0, 3) != '$P$')
return $output;

$count_log2 = strpos($this->itoa64, $setting[3]);
if ($count_log2 < 7 || $count_log2 > 30)
return $output;

$count = 1 << $count_log2;

$salt = substr($setting, 4, 8);
if (strlen($salt) != 8)
return $output;

# We're kind of forced to use MD5 here since it's the only
# cryptographic primitive available in all versions of PHP
# currently in use. To implement our own low-level crypto
# in PHP would result in much worse performance and
# consequently in lower iteration counts and hashes that are
# quicker to crack (by non-PHP code).
if (PHP_VERSION >= '5') {
$hash = md5($salt . $password, TRUE);
do {
$hash = md5($hash . $password, TRUE);
} while (--$count);
} else {
$hash = pack('H*', md5($salt . $password));
do {
$hash = pack('H*', md5($hash . $password));
} while (--$count);
}

$output = substr($setting, 0, 12);
$output .= $this->encode64($hash, 16);

return $output;
}

function gensalt_extended($input)
{
$count_log2 = min($this->iteration_count_log2 + 8, 24);
# This should be odd to not reveal weak DES keys, and the
# maximum valid value is (2**24 - 1) which is odd anyway.
$count = (1 << $count_log2) - 1;

$output = '_';
$output .= $this->itoa64[$count & 0x3f];
$output .= $this->itoa64[($count >> 6) & 0x3f];
$output .= $this->itoa64[($count >> 12) & 0x3f];
$output .= $this->itoa64[($count >> 18) & 0x3f];

$output .= $this->encode64($input, 3);

return $output;
}

function gensalt_blowfish($input)
{
# This one needs to use a different order of characters and a
# different encoding scheme from the one in encode64() above.
# We care because the last character in our encoded string will
# only represent 2 bits. While two known implementations of
# bcrypt will happily accept and correct a salt string which
# has the 4 unused bits set to non-zero, we do not want to take
# chances and we also do not want to waste an additional byte
# of entropy.
$itoa64 = './ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';

$output = '$2a$';
$output .= chr(ord('0') + $this->iteration_count_log2 / 10);
$output .= chr(ord('0') + $this->iteration_count_log2 % 10);
$output .= '$';

$i = 0;
do {
$c1 = ord($input[$i++]);
$output .= $itoa64[$c1 >> 2];
$c1 = ($c1 & 0x03) << 4;
if ($i >= 16) {
$output .= $itoa64[$c1];
break;
}

$c2 = ord($input[$i++]);
$c1 |= $c2 >> 4;
$output .= $itoa64[$c1];
$c1 = ($c2 & 0x0f) << 2;

$c2 = ord($input[$i++]);
$c1 |= $c2 >> 6;
$output .= $itoa64[$c1];
$output .= $itoa64[$c2 & 0x3f];
} while (1);

return $output;
}

function HashPassword($password)
{
$random = '';

if (CRYPT_BLOWFISH == 1 && !$this->portable_hashes) {
$random = $this->get_random_bytes(16);
$hash =
crypt($password, $this->gensalt_blowfish($random));
if (strlen($hash) == 60)
return $hash;
}

if (CRYPT_EXT_DES == 1 && !$this->portable_hashes) {
if (strlen($random) < 3)
$random = $this->get_random_bytes(3);
$hash =
crypt($password, $this->gensalt_extended($random));
if (strlen($hash) == 20)
return $hash;
}

if (strlen($random) < 6)
$random = $this->get_random_bytes(6);
$hash =
$this->crypt_private($password,
$this->gensalt_private($random));
if (strlen($hash) == 34)
return $hash;

# Returning '*' on error is safe here, but would _not_ be safe
# in a crypt(3)-like function used _both_ for generating new
# hashes and for validating passwords against existing hashes.
return '*';
}

function CheckPassword($password, $stored_hash)
{
$hash = $this->crypt_private($password, $stored_hash);
if ($hash[0] == '*')
$hash = crypt($password, $stored_hash);

return $hash == $stored_hash;
}
}

?>
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