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VerifyStatusHandler.php
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VerifyStatusHandler.php
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<?php
/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
/**
* Crypt_GPG is a package to use GPG from PHP
*
* This file contains an object that handles GPG's status output for the verify
* operation.
*
* PHP version 5
*
* LICENSE:
*
* This library is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of the
* License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* @category Encryption
* @package Crypt_GPG
* @author Michael Gauthier <mike@silverorange.com>
* @copyright 2008 silverorange
* @license http://www.gnu.org/copyleft/lesser.html LGPL License 2.1
* @version CVS: $Id$
* @link http://pear.php.net/package/Crypt_GPG
* @link http://www.gnupg.org/
*/
/**
* Signature object class definition
*/
require_once 'Crypt/GPG/Signature.php';
/**
* Status line handler for the verify operation
*
* This class is used internally by Crypt_GPG and does not need be used
* directly. See the {@link Crypt_GPG} class for end-user API.
*
* This class is responsible for building signature objects that are returned
* by the {@link Crypt_GPG::verify()} method. See <b>doc/DETAILS</b> in the
* {@link http://www.gnupg.org/download/ GPG distribution} for detailed
* information on GPG's status output for the verify operation.
*
* @category Encryption
* @package Crypt_GPG
* @author Michael Gauthier <mike@silverorange.com>
* @copyright 2008 silverorange
* @license http://www.gnu.org/copyleft/lesser.html LGPL License 2.1
* @link http://pear.php.net/package/Crypt_GPG
* @link http://www.gnupg.org/
*/
class Crypt_GPG_VerifyStatusHandler
{
// {{{ protected properties
/**
* The current signature id
*
* Ths signature id is emitted by GPG before the new signature line so we
* must remember it temporarily.
*
* @var string
*/
protected $signatureId = '';
/**
* List of parsed {@link Crypt_GPG_Signature} objects
*
* @var array
*/
protected $signatures = array();
/**
* Array index of the current signature
*
* @var integer
*/
protected $index = -1;
// }}}
// {{{ handle()
/**
* Handles a status line
*
* @param string $line the status line to handle.
*
* @return void
*/
public function handle($line)
{
$tokens = explode(' ', $line);
switch ($tokens[0]) {
case 'GOODSIG':
case 'EXPSIG':
case 'EXPKEYSIG':
case 'REVKEYSIG':
case 'BADSIG':
$signature = new Crypt_GPG_Signature();
// if there was a signature id, set it on the new signature
if ($this->signatureId != '') {
$signature->setId($this->signatureId);
$this->signatureId = '';
}
// Detect whether fingerprint or key id was returned and set
// signature values appropriately. Key ids are strings of either
// 16 or 8 hexadecimal characters. Fingerprints are strings of 40
// hexadecimal characters. The key id is the last 16 characters of
// the key fingerprint.
if (strlen($tokens[1]) > 16) {
$signature->setKeyFingerprint($tokens[1]);
$signature->setKeyId(substr($tokens[1], -16));
} else {
$signature->setKeyId($tokens[1]);
}
// get user id string
$string = implode(' ', array_splice($tokens, 2));
$string = rawurldecode($string);
$signature->setUserId(Crypt_GPG_UserId::parse($string));
$this->index++;
$this->signatures[$this->index] = $signature;
break;
case 'ERRSIG':
$signature = new Crypt_GPG_Signature();
// if there was a signature id, set it on the new signature
if ($this->signatureId != '') {
$signature->setId($this->signatureId);
$this->signatureId = '';
}
// Detect whether fingerprint or key id was returned and set
// signature values appropriately. Key ids are strings of either
// 16 or 8 hexadecimal characters. Fingerprints are strings of 40
// hexadecimal characters. The key id is the last 16 characters of
// the key fingerprint.
if (strlen($tokens[1]) > 16) {
$signature->setKeyFingerprint($tokens[1]);
$signature->setKeyId(substr($tokens[1], -16));
} else {
$signature->setKeyId($tokens[1]);
}
$this->index++;
$this->signatures[$this->index] = $signature;
break;
case 'VALIDSIG':
if (!array_key_exists($this->index, $this->signatures)) {
break;
}
$signature = $this->signatures[$this->index];
$signature->setValid(true);
$signature->setKeyFingerprint($tokens[1]);
if (strpos($tokens[3], 'T') === false) {
$signature->setCreationDate($tokens[3]);
} else {
$signature->setCreationDate(strtotime($tokens[3]));
}
if (array_key_exists(4, $tokens)) {
if (strpos($tokens[4], 'T') === false) {
$signature->setExpirationDate($tokens[4]);
} else {
$signature->setExpirationDate(strtotime($tokens[4]));
}
}
break;
case 'SIG_ID':
// note: signature id comes before new signature line and may not
// exist for some signature types
$this->signatureId = $tokens[1];
break;
}
}
// }}}
// {{{ getSignatures()
/**
* Gets the {@link Crypt_GPG_Signature} objects parsed by this handler
*
* @return array the signature objects parsed by this handler.
*/
public function getSignatures()
{
return $this->signatures;
}
// }}}
}
?>

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