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|
<?php
/*
+-------------------------------------------------------------------------+
| Key class for the Enigma Plugin |
| |
| Copyright (C) 2010-2015 The Roundcube Dev Team |
| |
| Licensed under the GNU General Public License version 3 or |
| any later version with exceptions for skins & plugins. |
| See the README file for a full license statement. |
| |
+-------------------------------------------------------------------------+
| Author: Aleksander Machniak <alec@alec.pl> |
+-------------------------------------------------------------------------+
*/
class enigma_key
{
public $id;
public $name;
public $users = array();
public $subkeys = array();
const TYPE_UNKNOWN = 0;
const TYPE_KEYPAIR = 1;
const TYPE_PUBLIC = 2;
const CAN_SIGN = 1;
const CAN_ENCRYPT = 2;
/**
* Keys list sorting callback for usort()
*/
static function cmp($a, $b)
{
return strcmp($a->name, $b->name);
}
/**
* Returns key type
*/
function get_type()
{
if ($this->subkeys[0]->has_private)
return enigma_key::TYPE_KEYPAIR;
else if (!empty($this->subkeys[0]))
return enigma_key::TYPE_PUBLIC;
return enigma_key::TYPE_UNKNOWN;
}
/**
* Returns true if all user IDs are revoked
*/
function is_revoked()
{
foreach ($this->subkeys as $subkey)
if (!$subkey->revoked)
return false;
return true;
}
/**
* Returns true if any user ID is valid
*/
function is_valid()
{
foreach ($this->users as $user)
if ($user->valid)
return true;
return false;
}
/**
* Returns true if any of subkeys is not expired
*/
function is_expired()
{
$now = time();
foreach ($this->subkeys as $subkey)
if (!$subkey->expires || $subkey->expires > $now)
return true;
return false;
}
/**
* Get key ID by user email
*/
function find_subkey($email, $mode)
{
$now = time();
foreach ($this->users as $user) {
if ($user->email === $email && $user->valid && !$user->revoked) {
foreach ($this->subkeys as $subkey) {
if (!$subkey->revoked && (!$subkey->expires || $subkey->expires > $now)) {
if (($mode == self::CAN_ENCRYPT && $subkey->can_encrypt)
|| ($mode == self::CAN_SIGN && $subkey->has_private)
) {
return $subkey;
}
}
}
}
}
}
/**
* Converts long ID or Fingerprint to short ID
* Crypt_GPG uses internal, but e.g. Thunderbird's Enigmail displays short ID
*
* @param string Key ID or fingerprint
* @return string Key short ID
*/
static function format_id($id)
{
// E.g. 04622F2089E037A5 => 89E037A5
return substr($id, -8);
}
/**
* Formats fingerprint string
*
* @param string Key fingerprint
*
* @return string Formatted fingerprint (with spaces)
*/
static function format_fingerprint($fingerprint)
{
if (!$fingerprint) {
return '';
}
$result = '';
for ($i=0; $i<40; $i++) {
if ($i % 4 == 0) {
$result .= ' ';
}
$result .= $fingerprint[$i];
}
return $result;
}
}
|
