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enigma_key.php
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enigma_key.php
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<?php
/*
+-------------------------------------------------------------------------+
| Key class for the Enigma Plugin |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License version 2 |
| as published by the Free Software Foundation. |
| |
| 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. |
| |
+-------------------------------------------------------------------------+
| Author: Aleksander Machniak <alec@alec.pl> |
+-------------------------------------------------------------------------+
*/
class enigma_key
{
public $id;
public $name;
public $users = array();
public $subkeys = array();
const TYPE_UNKNOWN = 0;
const TYPE_KEYPAIR = 1;
const TYPE_PUBLIC = 2;
/**
* Keys list sorting callback for usort()
*/
static function cmp($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 > $now)
return true;
return false;
}
/**
* Converts long ID or Fingerprint to short ID
* Crypt_GPG uses internal, but e.g. Thunderbird's Enigmail displays short ID
*
* @param string Key ID or fingerprint
* @return string Key short ID
*/
static function format_id($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;
}
}

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