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<?php
/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
/**
* A class representing GPG signatures
*
* This file contains a data class representing a GPG signature.
*
* 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, see
* <http://www.gnu.org/licenses/>
*
* @category Encryption
* @package Crypt_GPG
* @author Nathan Fredrickson <nathan@silverorange.com>
* @author Michael Gauthier <mike@silverorange.com>
* @copyright 2005-2013 silverorange
* @license http://www.gnu.org/copyleft/lesser.html LGPL License 2.1
* @link http://pear.php.net/package/Crypt_GPG
*/
/**
* User id class definition
*/
require_once 'Crypt/GPG/UserId.php';
/**
* A class for GPG signature information
*
* This class is used to store the results of the Crypt_GPG::verify() method.
*
* @category Encryption
* @package Crypt_GPG
* @author Nathan Fredrickson <nathan@silverorange.com>
* @author Michael Gauthier <mike@silverorange.com>
* @copyright 2005-2013 silverorange
* @license http://www.gnu.org/copyleft/lesser.html LGPL License 2.1
* @link http://pear.php.net/package/Crypt_GPG
* @see Crypt_GPG::verify()
*/
class Crypt_GPG_Signature
{
/**
* A base64-encoded string containing a unique id for this signature if
* this signature has been verified as ok
*
* This id is used to prevent replay attacks and is not present for all
* types of signatures.
*
* @var string
*/
private $_id = '';
/**
* The fingerprint of the key used to create the signature
*
* @var string
*/
private $_keyFingerprint = '';
/**
* The id of the key used to create the signature
*
* @var string
*/
private $_keyId = '';
/**
* The creation date of this signature
*
* This is a Unix timestamp.
*
* @var int
*/
private $_creationDate = 0;
/**
* The expiration date of the signature
*
* This is a Unix timestamp. If this signature does not expire, this will
* be zero.
*
* @var int
*/
private $_expirationDate = 0;
/**
* The user id associated with this signature
*
* @var Crypt_GPG_UserId
*/
private $_userId = null;
/**
* Whether or not this signature is valid
*
* @var bool
*/
private $_isValid = false;
/**
* Creates a new signature
*
* Signatures can be initialized from an array of named values. Available
* names are:
*
* - <kbd>string id</kbd> - the unique id of this signature.
* - <kbd>string fingerprint</kbd> - the fingerprint of the key used to
* create the signature. The fingerprint
* should not contain formatting
* characters.
* - <kbd>string keyId</kbd> - the id of the key used to create the
* the signature.
* - <kbd>int creation</kbd> - the date the signature was created.
* This is a UNIX timestamp.
* - <kbd>int expiration</kbd> - the date the signature expired. This
* is a UNIX timestamp. If the signature
* does not expire, use 0.
* - <kbd>bool valid</kbd> - whether or not the signature is valid.
* - <kbd>string userId</kbd> - the user id associated with the
* signature. This may also be a
* {@link Crypt_GPG_UserId} object.
*
* @param Crypt_GPG_Signature|array|null $signature Either an existing signature object,
* which is copied; or an array
* of initial values.
*/
public function __construct($signature = null)
{
// copy from object
if ($signature instanceof Crypt_GPG_Signature) {
$this->_id = $signature->_id;
$this->_keyFingerprint = $signature->_keyFingerprint;
$this->_keyId = $signature->_keyId;
$this->_creationDate = $signature->_creationDate;
$this->_expirationDate = $signature->_expirationDate;
$this->_isValid = $signature->_isValid;
if ($signature->_userId instanceof Crypt_GPG_UserId) {
$this->_userId = clone $signature->_userId;
}
}
// initialize from array
if (is_array($signature)) {
if (array_key_exists('id', $signature)) {
$this->setId($signature['id']);
}
if (array_key_exists('fingerprint', $signature)) {
$this->setKeyFingerprint($signature['fingerprint']);
}
if (array_key_exists('keyId', $signature)) {
$this->setKeyId($signature['keyId']);
}
if (array_key_exists('creation', $signature)) {
$this->setCreationDate($signature['creation']);
}
if (array_key_exists('expiration', $signature)) {
$this->setExpirationDate($signature['expiration']);
}
if (array_key_exists('valid', $signature)) {
$this->setValid($signature['valid']);
}
if (array_key_exists('userId', $signature)) {
$userId = new Crypt_GPG_UserId($signature['userId']);
$this->setUserId($userId);
}
}
}
/**
* Gets the id of this signature
*
* @return string A base64-encoded string containing a unique id for this
* signature. This id is used to prevent replay attacks and
* is not present for all types of signatures.
*/
public function getId()
{
return $this->_id;
}
/**
* Gets the fingerprint of the key used to create this signature
*
* @return string The fingerprint of the key used to create this signature.
*/
public function getKeyFingerprint()
{
return $this->_keyFingerprint;
}
/**
* Gets the id of the key used to create this signature
*
* Whereas the fingerprint of the signing key may not always be available
* (for example if the signature is bad), the id should always be
* available.
*
* @return string The id of the key used to create this signature.
*/
public function getKeyId()
{
return $this->_keyId;
}
/**
* Gets the creation date of this signature
*
* @return int The creation date of this signature. This is a Unix
* timestamp.
*/
public function getCreationDate()
{
return $this->_creationDate;
}
/**
* Gets the expiration date of the signature
*
* @return int The expiration date of this signature. This is a Unix
* timestamp. If this signature does not expire, this will
* be zero.
*/
public function getExpirationDate()
{
return $this->_expirationDate;
}
/**
* Gets the user id associated with this signature
*
* @return Crypt_GPG_UserId|null The user id associated with this signature.
*/
public function getUserId()
{
return $this->_userId;
}
/**
* Gets whether or no this signature is valid
*
* @return bool True if this signature is valid and false if it is not.
*/
public function isValid()
{
return $this->_isValid;
}
/**
* Sets the id of this signature
*
* @param string $id a base64-encoded string containing a unique id for
* this signature.
*
* @return Crypt_GPG_Signature the current object, for fluent interface.
*
* @see Crypt_GPG_Signature::getId()
*/
public function setId($id)
{
$this->_id = strval($id);
return $this;
}
/**
* Sets the key fingerprint of this signature
*
* @param string $fingerprint the key fingerprint of this signature. This
* is the fingerprint of the primary key used to
* create this signature.
*
* @return Crypt_GPG_Signature the current object, for fluent interface.
*/
public function setKeyFingerprint($fingerprint)
{
$this->_keyFingerprint = strval($fingerprint);
return $this;
}
/**
* Sets the key id of this signature
*
* @param string $id the key id of this signature. This is the id of the
* primary key used to create this signature.
*
* @return Crypt_GPG_Signature the current object, for fluent interface.
*/
public function setKeyId($id)
{
$this->_keyId = strval($id);
return $this;
}
/**
* Sets the creation date of this signature
*
* @param int $creationDate The creation date of this signature. This
* is a Unix timestamp.
*
* @return Crypt_GPG_Signature the current object, for fluent interface.
*/
public function setCreationDate($creationDate)
{
$this->_creationDate = intval($creationDate);
return $this;
}
/**
* Sets the expiration date of this signature
*
* @param int $expirationDate the expiration date of this signature.
* This is a Unix timestamp. Specify zero if
* this signature does not expire.
*
* @return Crypt_GPG_Signature the current object, for fluent interface.
*/
public function setExpirationDate($expirationDate)
{
$this->_expirationDate = intval($expirationDate);
return $this;
}
/**
* Sets the user id associated with this signature
*
* @param Crypt_GPG_UserId $userId the user id associated with this
* signature.
*
* @return Crypt_GPG_Signature the current object, for fluent interface.
*/
public function setUserId(Crypt_GPG_UserId $userId)
{
$this->_userId = $userId;
return $this;
}
/**
* Sets whether or not this signature is valid
*
* @param bool $isValid True if this signature is valid and false if it
* is not.
*
* @return Crypt_GPG_Signature the current object, for fluent interface.
*/
public function setValid($isValid)
{
$this->_isValid = ($isValid) ? true : false;
return $this;
}
}