mirror of
https://github.com/EGroupware/egroupware.git
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458 lines
14 KiB
PHP
Executable File
458 lines
14 KiB
PHP
Executable File
<?php
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/**
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* EGroupware addressbook: Contacts
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*
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* @link http://www.egroupware.org
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* @author Cornelius Weiss <egw@von-und-zu-weiss.de>
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* @author Ralf Becker <RalfBecker-AT-outdoor-training.de>
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* @author Joerg Lehrke <jlehrke@noc.de>
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* @package addressbook
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* @copyright (c) 2005-16 by Ralf Becker <RalfBecker-AT-outdoor-training.de>
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* @copyright (c) 2005/6 by Cornelius Weiss <egw@von-und-zu-weiss.de>
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* @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
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* @version $Id$
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*/
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use EGroupware\Api;
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use EGroupware\Api\Acl;
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/**
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* Business object for addressbook
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*
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* Currently this only contains PGP stuff, which needs to be called via Ajax
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*/
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class addressbook_bo extends Api\Contacts
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{
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static public $pgp_key_regexp = '/-----BEGIN PGP PUBLIC KEY BLOCK-----.*-----END PGP PUBLIC KEY BLOCK-----\r?\n?/s';
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/**
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* Search addressbook for PGP public keys of given recipients
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*
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* EMail addresses are lowercased to make search case-insensitive
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*
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* @param string|int|array $recipients (array of) email addresses or numeric account-ids
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* @return array email|account_id => key pairs
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*/
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public function get_pgp_keys($recipients)
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{
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return $this->get_keys($recipients, true);
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}
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/**
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* Keyserver URL and CA to verify ssl connection
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*/
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const KEYSERVER = 'https://hkps.pool.sks-keyservers.net/pks/lookup?op=get&exact=on&search=';
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const KEYSERVER_CA = '/addressbook/doc/sks-keyservers.netCA.pem';
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/**
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* Search keyserver for PGP public keys
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*
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* @param int|string|array $recipients (array of) email addresses or numeric account-ids
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* @param array $result =array()
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*/
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public static function get_pgp_keyserver($recipients, array $result=array())
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{
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foreach($recipients as $recipient)
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{
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$id = $recipient;
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if (is_numeric($recipient))
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{
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$recipient = $GLOBALS['egw']->accounts->id2name($recipient, 'account_email');
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}
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$matches = null;
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if (($response = file_get_contents(self::KEYSERVER.urlencode($recipient), false, stream_context_create(array(
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'ssl' => array(
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'verify_peer' => true,
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'cafile' => EGW_SERVER_ROOT.self::KEYSERVER_CA,
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)
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)))) && preg_match(self::$pgp_key_regexp, $response, $matches))
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{
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$result[$id] = $matches[0];
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}
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}
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return $result;
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}
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/**
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* Search addressbook for PGP public keys of given recipients
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*
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* EMail addresses are lowercased to make search case-insensitive
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*
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* @param string|int|array $recipients (array of) email addresses or numeric account-ids
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* @return array email|account_id => key pairs
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*/
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public function ajax_get_pgp_keys($recipients)
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{
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if (!$recipients) return array();
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if (!is_array($recipients)) $recipients = array($recipients);
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$result = $this->get_pgp_keys($recipients);
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if (($missing = array_diff($recipients, array_keys($result))))
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{
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$result = self::get_pgp_keyserver($missing, $result);
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}
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//error_log(__METHOD__."(".array2string($recipients).") returning ".array2string($result));
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Api\Json\Response::get()->data($result);
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}
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/**
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* Set PGP keys for given email or account_id, if user has necessary rights
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*
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* @param array $keys email|account_id => public key pairs to store
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* @param boolean $allow_user_updates =null for admins, set config to allow regular users to store their pgp key
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* @return int number of pgp keys stored
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*/
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public function ajax_set_pgp_keys($keys, $allow_user_updates=null)
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{
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$message = $this->set_keys($keys, true, $allow_user_updates);
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// add all keys to public keyserver too
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$message .= "\n".lang('%1 key(s) added to public keyserver "%2".',
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self::set_pgp_keyserver($keys), PARSE_URL(self::KEYSERVER_ADD, PHP_URL_HOST));
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Api\Json\Response::get()->data($message);
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}
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/**
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* Keyserver add URL
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*/
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const KEYSERVER_ADD = 'https://hkps.pool.sks-keyservers.net/pks/add';
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/**
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* Upload PGP keys to public keyserver
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*
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* @param array $keys email|account_id => public key pairs to store
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* @return int number of pgp keys stored
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*/
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public static function set_pgp_keyserver($keys)
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{
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$added = 0;
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foreach($keys as $email => $cert)
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{
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if (is_numeric($email))
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{
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$email = $GLOBALS['egw']->accounts->id2name($email, 'account_email');
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}
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if (($response = file_get_contents(self::KEYSERVER_ADD, false, stream_context_create(array(
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'ssl' => array(
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'verify_peer' => true,
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'cafile' => EGW_SERVER_ROOT.self::KEYSERVER_CA,
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),
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'http' => array(
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'header' => "Content-type: text/plain",
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'method' => 'POST',
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'content' => http_build_query(array(
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'keytext' => $cert,
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)),
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),
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)))))
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{
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$added++;
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}
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}
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return $added;
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}
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/**
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* Where to store public key depending on type and storage backend
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*
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* @param boolean $pgp true: PGP, false: S/Mime
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* @param array $contact =null contact array to pass to get_backend()
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* @return boolean true: store as file, false: store with contact
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*/
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public function pubkey_use_file($pgp, array $contact=null)
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{
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return $pgp || empty($contact) || get_class($this->get_backend($contact)) == 'EGroupware\\Api\\Contacts\\Sql';
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}
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/**
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* Set keys for given email or account_id and key type based on regexp (SMIME or PGP), if user has necessary rights
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*
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* @param array $keys email|account_id => public key pairs to store
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* @param boolean $pgp true: PGP, false: S/Mime
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* @param boolean $allow_user_updates = null for admins, set config to allow regular users to store their key
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*
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* @return string message of the update operation result
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*/
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public function set_keys ($keys, $pgp, $allow_user_updates = null)
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{
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if (isset($allow_user_updates) && isset($GLOBALS['egw_info']['user']['apps']['admin']))
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{
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$update = false;
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if ($allow_user_updates && !in_array('pubkey', $this->own_account_acl))
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{
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$this->own_account_acl[] = 'pubkey';
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$update = true;
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}
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elseif (!$allow_user_updates && ($key = array_search('pubkey', $this->own_account_acl)) !== false)
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{
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unset($this->own_account_acl[$key]);
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$update = true;
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}
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if ($update)
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{
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Config::save_value('own_account_acl', $this->own_account_acl, 'phpgwapi');
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}
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}
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$key_regexp = $pgp ? self::$pgp_key_regexp : Api\Mail\Smime::$certificate_regexp;
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$file = $pgp ? Api\Contacts::FILES_PGP_PUBKEY : Api\Contacts::FILES_SMIME_PUBKEY;
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$criteria = array();
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foreach($keys as $recipient => $key)
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{
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if (!preg_match($key_regexp, $key))
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{
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return lang('File is not a %1 public key!', $pgp ? lang('PGP') : lang('S/MIME'));
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}
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if (is_numeric($recipient))
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{
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$criteria['egw_addressbook.account_id'][] = (int)$recipient;
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}
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else
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{
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$criteria['contact_email'][] = $recipient;
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}
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}
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if (!$criteria) return 0;
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$updated = 0;
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$filters = array(null);
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// if accounts-backend is NOT SQL, we need to search the accounts separate
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if ($this->so_accounts)
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{
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$filters[] = array('owner' => '0');
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}
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foreach($filters as $filter)
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{
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foreach((array)$this->search($criteria, false, '', '', '', false, 'OR', false, $filter) as $contact)
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{
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if ($contact['account_id'] && isset($keys[$contact['account_id']]))
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{
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$key = $keys[$contact['account_id']];
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}
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elseif (isset($keys[$contact['email']]))
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{
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$key = $keys[$contact['email']];
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}
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// key is stored in file for sql backend or allways for pgp key
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$path = null;
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if ($contact['id'] && $this->pubkey_use_file($pgp, $contact))
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{
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$path = Api\Link::vfs_path('addressbook', $contact['id'], $file);
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$contact['files'] |= $pgp ? self::FILES_BIT_PGP_PUBKEY : self::FILES_BIT_SMIME_PUBKEY;
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// remove evtl. existing old pubkey
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if (preg_match($key_regexp, $contact['pubkey']))
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{
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$contact['pubkey'] = preg_replace($key_regexp, '', $contact['pubkey']);
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}
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$updated++;
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}
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elseif (empty($contact['pubkey']) || !preg_match($key_regexp, $contact['pubkey']))
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{
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$contact['pubkey'] .= $key;
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}
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else
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{
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$contact['pubkey'] = preg_replace($key_regexp, $key, $contact['pubkey']);
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}
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$contact['photo_unchanged'] = true; // otherwise photo will be lost, because $contact['jpegphoto'] is not set
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if ($this->check_perms(Acl::EDIT, $contact) && $this->save($contact))
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{
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if ($path)
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{
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// check_perms && save check ACL, in case of access only via own-account we have to use root to allow the update
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$backup = Api\Vfs::$is_root; Api\Vfs::$is_root = true;
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if (file_put_contents($path, $key)) ++$updated;
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Api\Vfs::$is_root = $backup;
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}
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else
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{
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++$updated;
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}
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}
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}
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}
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if ($criteria == array('egw.addressbook.account_id' => array((int)$GLOBALS['egw_info']['user']['account_id'])))
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{
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$message = !$updated ? lang('Permissiong denied! Ask your administrator to allow regular uses to update their public keys.') :
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lang('Your new public key has been stored in accounts addressbook.');
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}
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else
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{
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$message = !$updated ? false: lang('%1 public keys added.', $updated);
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}
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return $message;
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}
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/**
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* Search addressbook for keys of given recipients
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*
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* EMail addresses are lowercased to make search case-insensitive
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*
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* @param string|int|array $recipients (array of) email addresses or numeric account-ids or "contact:$id" for contacts by id
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* @param boolean $pgp true: PGP, false: S/Mime public keys
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* @return array email|account_id => key pairs
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*/
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protected function get_keys ($recipients, $pgp)
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{
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if (!$recipients) return array();
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if (!is_array($recipients)) $recipients = array($recipients);
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$criteria = $result = array();
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foreach($recipients as &$recipient)
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{
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if (is_numeric($recipient))
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{
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$criteria['egw_addressbook.account_id'][] = (int)$recipient;
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}
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else
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{
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$criteria['contact_email_home'][] = $criteria['contact_email'][] = $recipient = strtolower($recipient);
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}
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}
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$filters = array(null);
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// if accounts-backend is NOT SQL, we need to search the accounts separate
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if ($this->so_accounts)
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{
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$filters[] = array('owner' => '0');
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}
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foreach ($filters as $filter)
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{
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foreach((array)$this->search($criteria, array('account_id', 'contact_email', 'contact_email_home', 'contact_pubkey', 'contact_id'),
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'', '', '', false, 'OR', false, $filter) as $contact)
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{
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// first check for file and second for pubkey field (LDAP, AD or old SQL)
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if (($content = $this->get_key($contact, $pgp)))
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{
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$contact['email'] = strtolower($contact['email']);
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if (empty($criteria['account_id']) || in_array($contact['email'], $recipients))
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{
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if (in_array($contact['email_home'], $recipients))
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{
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$result[$contact['email_home']] = $content;
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}
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else
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{
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$result[$contact['email']] = $content;
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}
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}
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else
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{
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$result[$contact['account_id']] = $content;
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}
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}
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}
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}
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return $result;
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}
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/**
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* Extract PGP or S/Mime pubkey from contact array
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*
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* @param array $contact
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* @param boolean $pgp
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* @return string pubkey or NULL
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*/
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function get_key(array $contact, $pgp)
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{
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if ($pgp)
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{
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$key_regexp = self::$pgp_key_regexp;
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$file = Api\Contacts::FILES_PGP_PUBKEY;
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}
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else
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{
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$key_regexp = Api\Mail\Smime::$certificate_regexp;
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$file = Api\Contacts::FILES_SMIME_PUBKEY;
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}
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$matches = null;
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if (file_exists($path = Api\Link::vfs_path('addressbook', $contact['id'], $file)) &&
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($content = file_get_contents($path)) &&
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preg_match($key_regexp, $content, $matches) ||
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preg_match($key_regexp, $contact['pubkey'], $matches))
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{
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return $matches[0];
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}
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return null;
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}
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/**
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* Search addressbook for SMIME Certificate keys of given recipients
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*
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* EMail addresses are lowercased to make search case-insensitive
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*
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* @param string|int|array $recipients (array of) email addresses or numeric account-ids
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* @return array email|account_id => key pairs
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*/
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public function get_smime_keys($recipients)
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{
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return $this->get_keys($recipients, false);
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}
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/**
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* Set SMIME keys for given email or account_id, if user has necessary rights
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*
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* @param array $keys email|account_id => public key pairs to store
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* @param boolean $allow_user_updates =null for admins, set config to allow regular users to store their smime key
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*
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* @return string message of the update operation result
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*/
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public function set_smime_keys($keys, $allow_user_updates=null)
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{
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return $this->set_keys($keys, false, $allow_user_updates);
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}
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/**
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* Saves contact
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*
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* Reimplemented to strip pubkeys pasted into pubkey field or imported and store them as files in Vfs.
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* We allways store PGP pubkeys to Vfs, but S/Mime ones only for SQL backend, not for LDAP or AD.
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*
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* @param array &$contact contact array from etemplate::exec
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* @param boolean $ignore_acl =false should the acl be checked or not
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* @param boolean $touch_modified =true should modified/r be updated
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* @return int|string|boolean id on success, false on failure, the error-message is in $this->error
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*/
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function save(&$contact, $ignore_acl=false, $touch_modified=true)
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{
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if (($id = parent::save($contact, $ignore_acl, $touch_modified)) && !empty($contact['pubkey']))
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{
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$files = 0;
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foreach(array(
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array(addressbook_bo::$pgp_key_regexp, Api\Contacts::FILES_PGP_PUBKEY, Api\Contacts::FILES_BIT_PGP_PUBKEY),
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array(Api\Mail\Smime::$certificate_regexp, Api\Contacts::FILES_SMIME_PUBKEY, Api\Contacts::FILES_BIT_SMIME_PUBKEY),
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) as $data)
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{
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list($regexp, $file, $bit) = $data;
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$matches = null;
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if (!empty($contact['pubkey']) && preg_match($regexp, $contact['pubkey'], $matches) &&
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// check if we store that pubkey as file (PGP allways, but S/Mime only for SQL backend, not for LDAP or AD!)
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$this->pubkey_use_file($bit === Api\Contacts::FILES_BIT_PGP_PUBKEY, $contact))
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{
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// check_perms && save check ACL, in case of access only via own-account we have to use root to allow the update
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$backup = Api\Vfs::$is_root; Api\Vfs::$is_root = true;
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if (file_put_contents(Api\Link::vfs_path('addressbook', $id, $file), $matches[0]))
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{
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$files |= $bit;
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$contact['pubkey'] = str_replace($matches[0], '', $contact['pubkey']);
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}
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Api\Vfs::$is_root = $backup;
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}
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}
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// if we stripped a pubkey / stored it as file --> remove it from DB
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if ($files)
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{
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if (!trim($contact['pubkey'])) $contact['pubkey'] = null;
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$contact['files'] |= $files;
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parent::save($contact, $ignore_acl, $touch_modified);
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}
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}
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return $id;
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}
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}
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