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authorthomascube <thomas@roundcube.net>2011-01-12 15:47:44 +0000
committerthomascube <thomas@roundcube.net>2011-01-12 15:47:44 +0000
commit62a83b3bd5813885d964d9fd1509d52bb9c4f12c (patch)
tree241e4407b51747889e63cc2d26219301639c238d /plugins/enigma/lib/Crypt
parent28a4d4a49ebc4090155f97aeaf9a409f8e1549dc (diff)
Copying plugins to release branch
Diffstat (limited to 'plugins/enigma/lib/Crypt')
-rw-r--r--plugins/enigma/lib/Crypt/GPG.php2542
-rw-r--r--plugins/enigma/lib/Crypt/GPG/DecryptStatusHandler.php336
-rw-r--r--plugins/enigma/lib/Crypt/GPG/Engine.php1758
-rw-r--r--plugins/enigma/lib/Crypt/GPG/Exceptions.php473
-rw-r--r--plugins/enigma/lib/Crypt/GPG/Key.php223
-rw-r--r--plugins/enigma/lib/Crypt/GPG/Signature.php428
-rw-r--r--plugins/enigma/lib/Crypt/GPG/SubKey.php649
-rw-r--r--plugins/enigma/lib/Crypt/GPG/UserId.php373
-rw-r--r--plugins/enigma/lib/Crypt/GPG/VerifyStatusHandler.php216
9 files changed, 6998 insertions, 0 deletions
diff --git a/plugins/enigma/lib/Crypt/GPG.php b/plugins/enigma/lib/Crypt/GPG.php
new file mode 100644
index 000000000..6e8e717e8
--- /dev/null
+++ b/plugins/enigma/lib/Crypt/GPG.php
@@ -0,0 +1,2542 @@
+<?php
+
+/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
+
+/**
+ * Crypt_GPG is a package to use GPG from PHP
+ *
+ * This package provides an object oriented interface to GNU Privacy
+ * Guard (GPG). It requires the GPG executable to be on the system.
+ *
+ * Though GPG can support symmetric-key cryptography, this package is intended
+ * only to facilitate public-key cryptography.
+ *
+ * This file contains the main GPG class. The class in this file lets you
+ * encrypt, decrypt, sign and verify data; import and delete keys; and perform
+ * other useful GPG tasks.
+ *
+ * Example usage:
+ * <code>
+ * <?php
+ * // encrypt some data
+ * $gpg = new Crypt_GPG();
+ * $gpg->addEncryptKey($mySecretKeyId);
+ * $encryptedData = $gpg->encrypt($data);
+ * ?>
+ * </code>
+ *
+ * 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 Nathan Fredrickson <nathan@silverorange.com>
+ * @author Michael Gauthier <mike@silverorange.com>
+ * @copyright 2005-2010 silverorange
+ * @license http://www.gnu.org/copyleft/lesser.html LGPL License 2.1
+ * @version CVS: $Id: GPG.php 302814 2010-08-26 15:43:07Z gauthierm $
+ * @link http://pear.php.net/package/Crypt_GPG
+ * @link http://pear.php.net/manual/en/package.encryption.crypt-gpg.php
+ * @link http://www.gnupg.org/
+ */
+
+/**
+ * Signature handler class
+ */
+require_once 'Crypt/GPG/VerifyStatusHandler.php';
+
+/**
+ * Decryption handler class
+ */
+require_once 'Crypt/GPG/DecryptStatusHandler.php';
+
+/**
+ * GPG key class
+ */
+require_once 'Crypt/GPG/Key.php';
+
+/**
+ * GPG sub-key class
+ */
+require_once 'Crypt/GPG/SubKey.php';
+
+/**
+ * GPG user id class
+ */
+require_once 'Crypt/GPG/UserId.php';
+
+/**
+ * GPG process and I/O engine class
+ */
+require_once 'Crypt/GPG/Engine.php';
+
+/**
+ * GPG exception classes
+ */
+require_once 'Crypt/GPG/Exceptions.php';
+
+// {{{ class Crypt_GPG
+
+/**
+ * A class to use GPG from PHP
+ *
+ * This class provides an object oriented interface to GNU Privacy Guard (GPG).
+ *
+ * Though GPG can support symmetric-key cryptography, this class is intended
+ * only to facilitate public-key cryptography.
+ *
+ * @category Encryption
+ * @package Crypt_GPG
+ * @author Nathan Fredrickson <nathan@silverorange.com>
+ * @author Michael Gauthier <mike@silverorange.com>
+ * @copyright 2005-2010 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
+{
+ // {{{ class error constants
+
+ /**
+ * Error code returned when there is no error.
+ */
+ const ERROR_NONE = 0;
+
+ /**
+ * Error code returned when an unknown or unhandled error occurs.
+ */
+ const ERROR_UNKNOWN = 1;
+
+ /**
+ * Error code returned when a bad passphrase is used.
+ */
+ const ERROR_BAD_PASSPHRASE = 2;
+
+ /**
+ * Error code returned when a required passphrase is missing.
+ */
+ const ERROR_MISSING_PASSPHRASE = 3;
+
+ /**
+ * Error code returned when a key that is already in the keyring is
+ * imported.
+ */
+ const ERROR_DUPLICATE_KEY = 4;
+
+ /**
+ * Error code returned the required data is missing for an operation.
+ *
+ * This could be missing key data, missing encrypted data or missing
+ * signature data.
+ */
+ const ERROR_NO_DATA = 5;
+
+ /**
+ * Error code returned when an unsigned key is used.
+ */
+ const ERROR_UNSIGNED_KEY = 6;
+
+ /**
+ * Error code returned when a key that is not self-signed is used.
+ */
+ const ERROR_NOT_SELF_SIGNED = 7;
+
+ /**
+ * Error code returned when a public or private key that is not in the
+ * keyring is used.
+ */
+ const ERROR_KEY_NOT_FOUND = 8;
+
+ /**
+ * Error code returned when an attempt to delete public key having a
+ * private key is made.
+ */
+ const ERROR_DELETE_PRIVATE_KEY = 9;
+
+ /**
+ * Error code returned when one or more bad signatures are detected.
+ */
+ const ERROR_BAD_SIGNATURE = 10;
+
+ /**
+ * Error code returned when there is a problem reading GnuPG data files.
+ */
+ const ERROR_FILE_PERMISSIONS = 11;
+
+ // }}}
+ // {{{ class constants for data signing modes
+
+ /**
+ * Signing mode for normal signing of data. The signed message will not
+ * be readable without special software.
+ *
+ * This is the default signing mode.
+ *
+ * @see Crypt_GPG::sign()
+ * @see Crypt_GPG::signFile()
+ */
+ const SIGN_MODE_NORMAL = 1;
+
+ /**
+ * Signing mode for clearsigning data. Clearsigned signatures are ASCII
+ * armored data and are readable without special software. If the signed
+ * message is unencrypted, the message will still be readable. The message
+ * text will be in the original encoding.
+ *
+ * @see Crypt_GPG::sign()
+ * @see Crypt_GPG::signFile()
+ */
+ const SIGN_MODE_CLEAR = 2;
+
+ /**
+ * Signing mode for creating a detached signature. When using detached
+ * signatures, only the signature data is returned. The original message
+ * text may be distributed separately from the signature data. This is
+ * useful for miltipart/signed email messages as per
+ * {@link http://www.ietf.org/rfc/rfc3156.txt RFC 3156}.
+ *
+ * @see Crypt_GPG::sign()
+ * @see Crypt_GPG::signFile()
+ */
+ const SIGN_MODE_DETACHED = 3;
+
+ // }}}
+ // {{{ class constants for fingerprint formats
+
+ /**
+ * No formatting is performed.
+ *
+ * Example: C3BC615AD9C766E5A85C1F2716D27458B1BBA1C4
+ *
+ * @see Crypt_GPG::getFingerprint()
+ */
+ const FORMAT_NONE = 1;
+
+ /**
+ * Fingerprint is formatted in the format used by the GnuPG gpg command's
+ * default output.
+ *
+ * Example: C3BC 615A D9C7 66E5 A85C 1F27 16D2 7458 B1BB A1C4
+ *
+ * @see Crypt_GPG::getFingerprint()
+ */
+ const FORMAT_CANONICAL = 2;
+
+ /**
+ * Fingerprint is formatted in the format used when displaying X.509
+ * certificates
+ *
+ * Example: C3:BC:61:5A:D9:C7:66:E5:A8:5C:1F:27:16:D2:74:58:B1:BB:A1:C4
+ *
+ * @see Crypt_GPG::getFingerprint()
+ */
+ const FORMAT_X509 = 3;
+
+ // }}}
+ // {{{ other class constants
+
+ /**
+ * URI at which package bugs may be reported.
+ */
+ const BUG_URI = 'http://pear.php.net/bugs/report.php?package=Crypt_GPG';
+
+ // }}}
+ // {{{ protected class properties
+
+ /**
+ * Engine used to control the GPG subprocess
+ *
+ * @var Crypt_GPG_Engine
+ *
+ * @see Crypt_GPG::setEngine()
+ */
+ protected $engine = null;
+
+ /**
+ * Keys used to encrypt
+ *
+ * The array is of the form:
+ * <code>
+ * array(
+ * $key_id => array(
+ * 'fingerprint' => $fingerprint,
+ * 'passphrase' => null
+ * )
+ * );
+ * </code>
+ *
+ * @var array
+ * @see Crypt_GPG::addEncryptKey()
+ * @see Crypt_GPG::clearEncryptKeys()
+ */
+ protected $encryptKeys = array();
+
+ /**
+ * Keys used to decrypt
+ *
+ * The array is of the form:
+ * <code>
+ * array(
+ * $key_id => array(
+ * 'fingerprint' => $fingerprint,
+ * 'passphrase' => $passphrase
+ * )
+ * );
+ * </code>
+ *
+ * @var array
+ * @see Crypt_GPG::addSignKey()
+ * @see Crypt_GPG::clearSignKeys()
+ */
+ protected $signKeys = array();
+
+ /**
+ * Keys used to sign
+ *
+ * The array is of the form:
+ * <code>
+ * array(
+ * $key_id => array(
+ * 'fingerprint' => $fingerprint,
+ * 'passphrase' => $passphrase
+ * )
+ * );
+ * </code>
+ *
+ * @var array
+ * @see Crypt_GPG::addDecryptKey()
+ * @see Crypt_GPG::clearDecryptKeys()
+ */
+ protected $decryptKeys = array();
+
+ // }}}
+ // {{{ __construct()
+
+ /**
+ * Creates a new GPG object
+ *
+ * Available options are:
+ *
+ * - <kbd>string homedir</kbd> - the directory where the GPG
+ * keyring files are stored. If not
+ * specified, Crypt_GPG uses the
+ * default of <kbd>~/.gnupg</kbd>.
+ * - <kbd>string publicKeyring</kbd> - the file path of the public
+ * keyring. Use this if the public
+ * keyring is not in the homedir, or
+ * if the keyring is in a directory
+ * not writable by the process
+ * invoking GPG (like Apache). Then
+ * you can specify the path to the
+ * keyring with this option
+ * (/foo/bar/pubring.gpg), and specify
+ * a writable directory (like /tmp)
+ * using the <i>homedir</i> option.
+ * - <kbd>string privateKeyring</kbd> - the file path of the private
+ * keyring. Use this if the private
+ * keyring is not in the homedir, or
+ * if the keyring is in a directory
+ * not writable by the process
+ * invoking GPG (like Apache). Then
+ * you can specify the path to the
+ * keyring with this option
+ * (/foo/bar/secring.gpg), and specify
+ * a writable directory (like /tmp)
+ * using the <i>homedir</i> option.
+ * - <kbd>string trustDb</kbd> - the file path of the web-of-trust
+ * database. Use this if the trust
+ * database is not in the homedir, or
+ * if the database is in a directory
+ * not writable by the process
+ * invoking GPG (like Apache). Then
+ * you can specify the path to the
+ * trust database with this option
+ * (/foo/bar/trustdb.gpg), and specify
+ * a writable directory (like /tmp)
+ * using the <i>homedir</i> option.
+ * - <kbd>string binary</kbd> - the location of the GPG binary. If
+ * not specified, the driver attempts
+ * to auto-detect the GPG binary
+ * location using a list of known
+ * default locations for the current
+ * operating system. The option
+ * <kbd>gpgBinary</kbd> is a
+ * deprecated alias for this option.
+ * - <kbd>boolean debug</kbd> - whether or not to use debug mode.
+ * When debug mode is on, all
+ * communication to and from the GPG
+ * subprocess is logged. This can be
+ *
+ * @param array $options optional. An array of options used to create the
+ * GPG object. All options are optional and are
+ * represented as key-value pairs.
+ *
+ * @throws Crypt_GPG_FileException if the <kbd>homedir</kbd> does not exist
+ * and cannot be created. This can happen if <kbd>homedir</kbd> is
+ * not specified, Crypt_GPG is run as the web user, and the web
+ * user has no home directory. This exception is also thrown if any
+ * of the options <kbd>publicKeyring</kbd>,
+ * <kbd>privateKeyring</kbd> or <kbd>trustDb</kbd> options are
+ * specified but the files do not exist or are are not readable.
+ * This can happen if the user running the Crypt_GPG process (for
+ * example, the Apache user) does not have permission to read the
+ * files.
+ *
+ * @throws PEAR_Exception if the provided <kbd>binary</kbd> is invalid, or
+ * if no <kbd>binary</kbd> is provided and no suitable binary could
+ * be found.
+ */
+ public function __construct(array $options = array())
+ {
+ $this->setEngine(new Crypt_GPG_Engine($options));
+ }
+
+ // }}}
+ // {{{ importKey()
+
+ /**
+ * Imports a public or private key into the keyring
+ *
+ * Keys may be removed from the keyring using
+ * {@link Crypt_GPG::deletePublicKey()} or
+ * {@link Crypt_GPG::deletePrivateKey()}.
+ *
+ * @param string $data the key data to be imported.
+ *
+ * @return array an associative array containing the following elements:
+ * - <kbd>fingerprint</kbd> - the fingerprint of the
+ * imported key,
+ * - <kbd>public_imported</kbd> - the number of public
+ * keys imported,
+ * - <kbd>public_unchanged</kbd> - the number of unchanged
+ * public keys,
+ * - <kbd>private_imported</kbd> - the number of private
+ * keys imported,
+ * - <kbd>private_unchanged</kbd> - the number of unchanged
+ * private keys.
+ *
+ * @throws Crypt_GPG_NoDataException if the key data is missing or if the
+ * data is is not valid key data.
+ *
+ * @throws Crypt_GPG_Exception if an unknown or unexpected error occurs.
+ * Use the <kbd>debug</kbd> option and file a bug report if these
+ * exceptions occur.
+ */
+ public function importKey($data)
+ {
+ return $this->_importKey($data, false);
+ }
+
+ // }}}
+ // {{{ importKeyFile()
+
+ /**
+ * Imports a public or private key file into the keyring
+ *
+ * Keys may be removed from the keyring using
+ * {@link Crypt_GPG::deletePublicKey()} or
+ * {@link Crypt_GPG::deletePrivateKey()}.
+ *
+ * @param string $filename the key file to be imported.
+ *
+ * @return array an associative array containing the following elements:
+ * - <kbd>fingerprint</kbd> - the fingerprint of the
+ * imported key,
+ * - <kbd>public_imported</kbd> - the number of public
+ * keys imported,
+ * - <kbd>public_unchanged</kbd> - the number of unchanged
+ * public keys,
+ * - <kbd>private_imported</kbd> - the number of private
+ * keys imported,
+ * - <kbd>private_unchanged</kbd> - the number of unchanged
+ * private keys.
+ * private keys.
+ *
+ * @throws Crypt_GPG_NoDataException if the key data is missing or if the
+ * data is is not valid key data.
+ *
+ * @throws Crypt_GPG_FileException if the key file is not readable.
+ *
+ * @throws Crypt_GPG_Exception if an unknown or unexpected error occurs.
+ * Use the <kbd>debug</kbd> option and file a bug report if these
+ * exceptions occur.
+ */
+ public function importKeyFile($filename)
+ {
+ return $this->_importKey($filename, true);
+ }
+
+ // }}}
+ // {{{ exportPublicKey()
+
+ /**
+ * Exports a public key from the keyring
+ *
+ * The exported key remains on the keyring. To delete the public key, use
+ * {@link Crypt_GPG::deletePublicKey()}.
+ *
+ * If more than one key fingerprint is available for the specified
+ * <kbd>$keyId</kbd> (for example, if you use a non-unique uid) only the
+ * first public key is exported.
+ *
+ * @param string $keyId either the full uid of the public key, the email
+ * part of the uid of the public key or the key id of
+ * the public key. For example,
+ * "Test User (example) <test@example.com>",
+ * "test@example.com" or a hexadecimal string.
+ * @param boolean $armor optional. If true, ASCII armored data is returned;
+ * otherwise, binary data is returned. Defaults to
+ * true.
+ *
+ * @return string the public key data.
+ *
+ * @throws Crypt_GPG_KeyNotFoundException if a public key with the given
+ * <kbd>$keyId</kbd> is not found.
+ *
+ * @throws Crypt_GPG_Exception if an unknown or unexpected error occurs.
+ * Use the <kbd>debug</kbd> option and file a bug report if these
+ * exceptions occur.
+ */
+ public function exportPublicKey($keyId, $armor = true)
+ {
+ $fingerprint = $this->getFingerprint($keyId);
+
+ if ($fingerprint === null) {
+ throw new Crypt_GPG_KeyNotFoundException(
+ 'Public key not found: ' . $keyId,
+ Crypt_GPG::ERROR_KEY_NOT_FOUND, $keyId);
+ }
+
+ $keyData = '';
+ $operation = '--export ' . escapeshellarg($fingerprint);
+ $arguments = ($armor) ? array('--armor') : array();
+
+ $this->engine->reset();
+ $this->engine->setOutput($keyData);
+ $this->engine->setOperation($operation, $arguments);
+ $this->engine->run();
+
+ $code = $this->engine->getErrorCode();
+
+ if ($code !== Crypt_GPG::ERROR_NONE) {
+ throw new Crypt_GPG_Exception(
+ 'Unknown error exporting public key. Please use the ' .
+ '\'debug\' option when creating the Crypt_GPG object, and ' .
+ 'file a bug report at ' . self::BUG_URI, $code);
+ }
+
+ return $keyData;
+ }
+
+ // }}}
+ // {{{ deletePublicKey()
+
+ /**
+ * Deletes a public key from the keyring
+ *
+ * If more than one key fingerprint is available for the specified
+ * <kbd>$keyId</kbd> (for example, if you use a non-unique uid) only the
+ * first public key is deleted.
+ *
+ * The private key must be deleted first or an exception will be thrown.
+ * See {@link Crypt_GPG::deletePrivateKey()}.
+ *
+ * @param string $keyId either the full uid of the public key, the email
+ * part of the uid of the public key or the key id of
+ * the public key. For example,
+ * "Test User (example) <test@example.com>",
+ * "test@example.com" or a hexadecimal string.
+ *
+ * @return void
+ *
+ * @throws Crypt_GPG_KeyNotFoundException if a public key with the given
+ * <kbd>$keyId</kbd> is not found.
+ *
+ * @throws Crypt_GPG_DeletePrivateKeyException if the specified public key
+ * has an associated private key on the keyring. The private key
+ * must be deleted first.
+ *
+ * @throws Crypt_GPG_Exception if an unknown or unexpected error occurs.
+ * Use the <kbd>debug</kbd> option and file a bug report if these
+ * exceptions occur.
+ */
+ public function deletePublicKey($keyId)
+ {
+ $fingerprint = $this->getFingerprint($keyId);
+
+ if ($fingerprint === null) {
+ throw new Crypt_GPG_KeyNotFoundException(
+ 'Public key not found: ' . $keyId,
+ Crypt_GPG::ERROR_KEY_NOT_FOUND, $keyId);
+ }
+
+ $operation = '--delete-key ' . escapeshellarg($fingerprint);
+ $arguments = array(
+ '--batch',
+ '--yes'
+ );
+
+ $this->engine->reset();
+ $this->engine->setOperation($operation, $arguments);
+ $this->engine->run();
+
+ $code = $this->engine->getErrorCode();
+
+ switch ($code) {
+ case Crypt_GPG::ERROR_NONE:
+ break;
+ case Crypt_GPG::ERROR_DELETE_PRIVATE_KEY:
+ throw new Crypt_GPG_DeletePrivateKeyException(
+ 'Private key must be deleted before public key can be ' .
+ 'deleted.', $code, $keyId);
+ default:
+ throw new Crypt_GPG_Exception(
+ 'Unknown error deleting public key. Please use the ' .
+ '\'debug\' option when creating the Crypt_GPG object, and ' .
+ 'file a bug report at ' . self::BUG_URI, $code);
+ }
+ }
+
+ // }}}
+ // {{{ deletePrivateKey()
+
+ /**
+ * Deletes a private key from the keyring
+ *
+ * If more than one key fingerprint is available for the specified
+ * <kbd>$keyId</kbd> (for example, if you use a non-unique uid) only the
+ * first private key is deleted.
+ *
+ * Calls GPG with the <kbd>--delete-secret-key</kbd> command.
+ *
+ * @param string $keyId either the full uid of the private key, the email
+ * part of the uid of the private key or the key id of
+ * the private key. For example,
+ * "Test User (example) <test@example.com>",
+ * "test@example.com" or a hexadecimal string.
+ *
+ * @return void
+ *
+ * @throws Crypt_GPG_KeyNotFoundException if a private key with the given
+ * <kbd>$keyId</kbd> is not found.
+ *
+ * @throws Crypt_GPG_Exception if an unknown or unexpected error occurs.
+ * Use the <kbd>debug</kbd> option and file a bug report if these
+ * exceptions occur.
+ */
+ public function deletePrivateKey($keyId)
+ {
+ $fingerprint = $this->getFingerprint($keyId);
+
+ if ($fingerprint === null) {
+ throw new Crypt_GPG_KeyNotFoundException(
+ 'Private key not found: ' . $keyId,
+ Crypt_GPG::ERROR_KEY_NOT_FOUND, $keyId);
+ }
+
+ $operation = '--delete-secret-key ' . escapeshellarg($fingerprint);
+ $arguments = array(
+ '--batch',
+ '--yes'
+ );
+
+ $this->engine->reset();
+ $this->engine->setOperation($operation, $arguments);
+ $this->engine->run();
+
+ $code = $this->engine->getErrorCode();
+
+ switch ($code) {
+ case Crypt_GPG::ERROR_NONE:
+ break;
+ case Crypt_GPG::ERROR_KEY_NOT_FOUND:
+ throw new Crypt_GPG_KeyNotFoundException(
+ 'Private key not found: ' . $keyId,
+ $code, $keyId);
+ default:
+ throw new Crypt_GPG_Exception(
+ 'Unknown error deleting private key. Please use the ' .
+ '\'debug\' option when creating the Crypt_GPG object, and ' .
+ 'file a bug report at ' . self::BUG_URI, $code);
+ }
+ }
+
+ // }}}
+ // {{{ getKeys()
+
+ /**
+ * Gets the available keys in the keyring
+ *
+ * Calls GPG with the <kbd>--list-keys</kbd> command and grabs keys. See
+ * the first section of <b>doc/DETAILS</b> in the
+ * {@link http://www.gnupg.org/download/ GPG package} for a detailed
+ * description of how the GPG command output is parsed.
+ *
+ * @param string $keyId optional. Only keys with that match the specified
+ * pattern are returned. The pattern may be part of
+ * a user id, a key id or a key fingerprint. If not
+ * specified, all keys are returned.
+ *
+ * @return array an array of {@link Crypt_GPG_Key} objects. If no keys
+ * match the specified <kbd>$keyId</kbd> an empty array is
+ * returned.
+ *
+ * @throws Crypt_GPG_Exception if an unknown or unexpected error occurs.
+ * Use the <kbd>debug</kbd> option and file a bug report if these
+ * exceptions occur.
+ *
+ * @see Crypt_GPG_Key
+ */
+ public function getKeys($keyId = '')
+ {
+ // get private key fingerprints
+ if ($keyId == '') {
+ $operation = '--list-secret-keys';
+ } else {
+ $operation = '--list-secret-keys ' . escapeshellarg($keyId);
+ }
+
+ // According to The file 'doc/DETAILS' in the GnuPG distribution, using
+ // double '--with-fingerprint' also prints the fingerprint for subkeys.
+ $arguments = array(
+ '--with-colons',
+ '--with-fingerprint',
+ '--with-fingerprint',
+ '--fixed-list-mode'
+ );
+
+ $output = '';
+
+ $this->engine->reset();
+ $this->engine->setOutput($output);
+ $this->engine->setOperation($operation, $arguments);
+ $this->engine->run();
+
+ $code = $this->engine->getErrorCode();
+
+ switch ($code) {
+ case Crypt_GPG::ERROR_NONE:
+ case Crypt_GPG::ERROR_KEY_NOT_FOUND:
+ // ignore not found key errors
+ break;
+ case Crypt_GPG::ERROR_FILE_PERMISSIONS:
+ $filename = $this->engine->getErrorFilename();
+ if ($filename) {
+ throw new Crypt_GPG_FileException(sprintf(
+ 'Error reading GnuPG data file \'%s\'. Check to make ' .
+ 'sure it is readable by the current user.', $filename),
+ $code, $filename);
+ }
+ throw new Crypt_GPG_FileException(
+ 'Error reading GnuPG data file. Check to make GnuPG data ' .
+ 'files are readable by the current user.', $code);
+ default:
+ throw new Crypt_GPG_Exception(
+ 'Unknown error getting keys. Please use the \'debug\' option ' .
+ 'when creating the Crypt_GPG object, and file a bug report ' .
+ 'at ' . self::BUG_URI, $code);
+ }
+
+ $privateKeyFingerprints = array();
+
+ $lines = explode(PHP_EOL, $output);
+ foreach ($lines as $line) {
+ $lineExp = explode(':', $line);
+ if ($lineExp[0] == 'fpr') {
+ $privateKeyFingerprints[] = $lineExp[9];
+ }
+ }
+
+ // get public keys
+ if ($keyId == '') {
+ $operation = '--list-public-keys';
+ } else {
+ $operation = '--list-public-keys ' . escapeshellarg($keyId);
+ }
+
+ $output = '';
+
+ $this->engine->reset();
+ $this->engine->setOutput($output);
+ $this->engine->setOperation($operation, $arguments);
+ $this->engine->run();
+
+ $code = $this->engine->getErrorCode();
+
+ switch ($code) {
+ case Crypt_GPG::ERROR_NONE:
+ case Crypt_GPG::ERROR_KEY_NOT_FOUND:
+ // ignore not found key errors
+ break;
+ case Crypt_GPG::ERROR_FILE_PERMISSIONS:
+ $filename = $this->engine->getErrorFilename();
+ if ($filename) {
+ throw new Crypt_GPG_FileException(sprintf(
+ 'Error reading GnuPG data file \'%s\'. Check to make ' .
+ 'sure it is readable by the current user.', $filename),
+ $code, $filename);
+ }
+ throw new Crypt_GPG_FileException(
+ 'Error reading GnuPG data file. Check to make GnuPG data ' .
+ 'files are readable by the current user.', $code);
+ default:
+ throw new Crypt_GPG_Exception(
+ 'Unknown error getting keys. Please use the \'debug\' option ' .
+ 'when creating the Crypt_GPG object, and file a bug report ' .
+ 'at ' . self::BUG_URI, $code);
+ }
+
+ $keys = array();
+
+ $key = null; // current key
+ $subKey = null; // current sub-key
+
+ $lines = explode(PHP_EOL, $output);
+ foreach ($lines as $line) {
+ $lineExp = explode(':', $line);
+
+ if ($lineExp[0] == 'pub') {
+
+ // new primary key means last key should be added to the array
+ if ($key !== null) {
+ $keys[] = $key;
+ }
+
+ $key = new Crypt_GPG_Key();
+
+ $subKey = Crypt_GPG_SubKey::parse($line);
+ $key->addSubKey($subKey);
+
+ } elseif ($lineExp[0] == 'sub') {
+
+ $subKey = Crypt_GPG_SubKey::parse($line);
+ $key->addSubKey($subKey);
+
+ } elseif ($lineExp[0] == 'fpr') {
+
+ $fingerprint = $lineExp[9];
+
+ // set current sub-key fingerprint
+ $subKey->setFingerprint($fingerprint);
+
+ // if private key exists, set has private to true
+ if (in_array($fingerprint, $privateKeyFingerprints)) {
+ $subKey->setHasPrivate(true);
+ }
+
+ } elseif ($lineExp[0] == 'uid') {
+
+ $string = stripcslashes($lineExp[9]); // as per documentation
+ $userId = new Crypt_GPG_UserId($string);
+
+ if ($lineExp[1] == 'r') {
+ $userId->setRevoked(true);
+ }
+
+ $key->addUserId($userId);
+
+ }
+ }
+
+ // add last key
+ if ($key !== null) {
+ $keys[] = $key;
+ }
+
+ return $keys;
+ }
+
+ // }}}
+ // {{{ getFingerprint()
+
+ /**
+ * Gets a key fingerprint from the keyring
+ *
+ * If more than one key fingerprint is available (for example, if you use
+ * a non-unique user id) only the first key fingerprint is returned.
+ *
+ * Calls the GPG <kbd>--list-keys</kbd> command with the
+ * <kbd>--with-fingerprint</kbd> option to retrieve a public key
+ * fingerprint.
+ *
+ * @param string $keyId either the full user id of the key, the email
+ * part of the user id of the key, or the key id of
+ * the key. For example,
+ * "Test User (example) <test@example.com>",
+ * "test@example.com" or a hexadecimal string.
+ * @param integer $format optional. How the fingerprint should be formatted.
+ * Use {@link Crypt_GPG::FORMAT_X509} for X.509
+ * certificate format,
+ * {@link Crypt_GPG::FORMAT_CANONICAL} for the format
+ * used by GnuPG output and
+ * {@link Crypt_GPG::FORMAT_NONE} for no formatting.
+ * Defaults to <code>Crypt_GPG::FORMAT_NONE</code>.
+ *
+ * @return string the fingerprint of the key, or null if no fingerprint
+ * is found for the given <kbd>$keyId</kbd>.
+ *
+ * @throws Crypt_GPG_Exception if an unknown or unexpected error occurs.
+ * Use the <kbd>debug</kbd> option and file a bug report if these
+ * exceptions occur.
+ */
+ public function getFingerprint($keyId, $format = Crypt_GPG::FORMAT_NONE)
+ {
+ $output = '';
+ $operation = '--list-keys ' . escapeshellarg($keyId);
+ $arguments = array(
+ '--with-colons',
+ '--with-fingerprint'
+ );
+
+ $this->engine->reset();
+ $this->engine->setOutput($output);
+ $this->engine->setOperation($operation, $arguments);
+ $this->engine->run();
+
+ $code = $this->engine->getErrorCode();
+
+ switch ($code) {
+ case Crypt_GPG::ERROR_NONE:
+ case Crypt_GPG::ERROR_KEY_NOT_FOUND:
+ // ignore not found key errors
+ break;
+ default:
+ throw new Crypt_GPG_Exception(
+ 'Unknown error getting key fingerprint. Please use the ' .
+ '\'debug\' option when creating the Crypt_GPG object, and ' .
+ 'file a bug report at ' . self::BUG_URI, $code);
+ }
+
+ $fingerprint = null;
+
+ $lines = explode(PHP_EOL, $output);
+ foreach ($lines as $line) {
+ if (substr($line, 0, 3) == 'fpr') {
+ $lineExp = explode(':', $line);
+ $fingerprint = $lineExp[9];
+
+ switch ($format) {
+ case Crypt_GPG::FORMAT_CANONICAL:
+ $fingerprintExp = str_split($fingerprint, 4);
+ $format = '%s %s %s %s %s %s %s %s %s %s';
+ $fingerprint = vsprintf($format, $fingerprintExp);
+ break;
+
+ case Crypt_GPG::FORMAT_X509:
+ $fingerprintExp = str_split($fingerprint, 2);
+ $fingerprint = implode(':', $fingerprintExp);
+ break;
+ }
+
+ break;
+ }
+ }
+
+ return $fingerprint;
+ }
+
+ // }}}
+ // {{{ encrypt()
+
+ /**
+ * Encrypts string data
+ *
+ * Data is ASCII armored by default but may optionally be returned as
+ * binary.
+ *
+ * @param string $data the data to be encrypted.
+ * @param boolean $armor optional. If true, ASCII armored data is returned;
+ * otherwise, binary data is returned. Defaults to
+ * true.
+ *
+ * @return string the encrypted data.
+ *
+ * @throws Crypt_GPG_KeyNotFoundException if no encryption key is specified.
+ * See {@link Crypt_GPG::addEncryptKey()}.
+ *
+ * @throws Crypt_GPG_Exception if an unknown or unexpected error occurs.
+ * Use the <kbd>debug</kbd> option and file a bug report if these
+ * exceptions occur.
+ *
+ * @sensitive $data
+ */
+ public function encrypt($data, $armor = true)
+ {
+ return $this->_encrypt($data, false, null, $armor);
+ }
+
+ // }}}
+ // {{{ encryptFile()
+
+ /**
+ * Encrypts a file
+ *
+ * Encrypted data is ASCII armored by default but may optionally be saved
+ * as binary.
+ *
+ * @param string $filename the filename of the file to encrypt.
+ * @param string $encryptedFile optional. The filename of the file in
+ * which to store the encrypted data. If null
+ * or unspecified, the encrypted data is
+ * returned as a string.
+ * @param boolean $armor optional. If true, ASCII armored data is
+ * returned; otherwise, binary data is
+ * returned. Defaults to true.
+ *
+ * @return void|string if the <kbd>$encryptedFile</kbd> parameter is null,
+ * a string containing the encrypted data is returned.
+ *
+ * @throws Crypt_GPG_KeyNotFoundException if no encryption key is specified.
+ * See {@link Crypt_GPG::addEncryptKey()}.
+ *
+ * @throws Crypt_GPG_FileException if the output file is not writeable or
+ * if the input file is not readable.
+ *
+ * @throws Crypt_GPG_Exception if an unknown or unexpected error occurs.
+ * Use the <kbd>debug</kbd> option and file a bug report if these
+ * exceptions occur.
+ */
+ public function encryptFile($filename, $encryptedFile = null, $armor = true)
+ {
+ return $this->_encrypt($filename, true, $encryptedFile, $armor);
+ }
+
+ // }}}
+ // {{{ encryptAndSign()
+
+ /**
+ * Encrypts and signs data
+ *
+ * Data is encrypted and signed in a single pass.
+ *
+ * NOTE: Until GnuPG version 1.4.10, it was not possible to verify
+ * encrypted-signed data without decrypting it at the same time. If you try
+ * to use {@link Crypt_GPG::verify()} method on encrypted-signed data with
+ * earlier GnuPG versions, you will get an error. Please use
+ * {@link Crypt_GPG::decryptAndVerify()} to verify encrypted-signed data.
+ *
+ * @param string $data the data to be encrypted and signed.
+ * @param boolean $armor optional. If true, ASCII armored data is returned;
+ * otherwise, binary data is returned. Defaults to
+ * true.
+ *
+ * @return string the encrypted signed data.
+ *
+ * @throws Crypt_GPG_KeyNotFoundException if no encryption key is specified
+ * or if no signing key is specified. See
+ * {@link Crypt_GPG::addEncryptKey()} and
+ * {@link Crypt_GPG::addSignKey()}.
+ *
+ * @throws Crypt_GPG_BadPassphraseException if a specified passphrase is
+ * incorrect or if a required passphrase is not specified.
+ *
+ * @throws Crypt_GPG_Exception if an unknown or unexpected error occurs.
+ * Use the <kbd>debug</kbd> option and file a bug report if these
+ * exceptions occur.
+ *
+ * @see Crypt_GPG::decryptAndVerify()
+ */
+ public function encryptAndSign($data, $armor = true)
+ {
+ return $this->_encryptAndSign($data, false, null, $armor);
+ }
+
+ // }}}
+ // {{{ encryptAndSignFile()
+
+ /**
+ * Encrypts and signs a file
+ *
+ * The file is encrypted and signed in a single pass.
+ *
+ * NOTE: Until GnuPG version 1.4.10, it was not possible to verify
+ * encrypted-signed files without decrypting them at the same time. If you
+ * try to use {@link Crypt_GPG::verify()} method on encrypted-signed files
+ * with earlier GnuPG versions, you will get an error. Please use
+ * {@link Crypt_GPG::decryptAndVerifyFile()} to verify encrypted-signed
+ * files.
+ *
+ * @param string $filename the name of the file containing the data to
+ * be encrypted and signed.
+ * @param string $signedFile optional. The name of the file in which the
+ * encrypted, signed data should be stored. If
+ * null or unspecified, the encrypted, signed
+ * data is returned as a string.
+ * @param boolean $armor optional. If true, ASCII armored data is
+ * returned; otherwise, binary data is returned.
+ * Defaults to true.
+ *
+ * @return void|string if the <kbd>$signedFile</kbd> parameter is null, a
+ * string containing the encrypted, signed data is
+ * returned.
+ *
+ * @throws Crypt_GPG_KeyNotFoundException if no encryption key is specified
+ * or if no signing key is specified. See
+ * {@link Crypt_GPG::addEncryptKey()} and
+ * {@link Crypt_GPG::addSignKey()}.
+ *
+ * @throws Crypt_GPG_BadPassphraseException if a specified passphrase is
+ * incorrect or if a required passphrase is not specified.
+ *
+ * @throws Crypt_GPG_FileException if the output file is not writeable or
+ * if the input file is not readable.
+ *
+ * @throws Crypt_GPG_Exception if an unknown or unexpected error occurs.
+ * Use the <kbd>debug</kbd> option and file a bug report if these
+ * exceptions occur.
+ *
+ * @see Crypt_GPG::decryptAndVerifyFile()
+ */
+ public function encryptAndSignFile($filename, $signedFile = null,
+ $armor = true
+ ) {
+ return $this->_encryptAndSign($filename, true, $signedFile, $armor);
+ }
+
+ // }}}
+ // {{{ decrypt()
+
+ /**
+ * Decrypts string data
+ *
+ * This method assumes the required private key is available in the keyring
+ * and throws an exception if the private key is not available. To add a
+ * private key to the keyring, use the {@link Crypt_GPG::importKey()} or
+ * {@link Crypt_GPG::importKeyFile()} methods.
+ *
+ * @param string $encryptedData the data to be decrypted.
+ *
+ * @return string the decrypted data.
+ *
+ * @throws Crypt_GPG_KeyNotFoundException if the private key needed to
+ * decrypt the data is not in the user's keyring.
+ *
+ * @throws Crypt_GPG_NoDataException if specified data does not contain
+ * GPG encrypted data.
+ *
+ * @throws Crypt_GPG_BadPassphraseException if a required passphrase is
+ * incorrect or if a required passphrase is not specified. See
+ * {@link Crypt_GPG::addDecryptKey()}.
+ *
+ * @throws Crypt_GPG_Exception if an unknown or unexpected error occurs.
+ * Use the <kbd>debug</kbd> option and file a bug report if these
+ * exceptions occur.
+ */
+ public function decrypt($encryptedData)
+ {
+ return $this->_decrypt($encryptedData, false, null);
+ }
+
+ // }}}
+ // {{{ decryptFile()
+
+ /**
+ * Decrypts a file
+ *
+ * This method assumes the required private key is available in the keyring
+ * and throws an exception if the private key is not available. To add a
+ * private key to the keyring, use the {@link Crypt_GPG::importKey()} or
+ * {@link Crypt_GPG::importKeyFile()} methods.
+ *
+ * @param string $encryptedFile the name of the encrypted file data to
+ * decrypt.
+ * @param string $decryptedFile optional. The name of the file to which the
+ * decrypted data should be written. If null
+ * or unspecified, the decrypted data is
+ * returned as a string.
+ *
+ * @return void|string if the <kbd>$decryptedFile</kbd> parameter is null,
+ * a string containing the decrypted data is returned.
+ *
+ * @throws Crypt_GPG_KeyNotFoundException if the private key needed to
+ * decrypt the data is not in the user's keyring.
+ *
+ * @throws Crypt_GPG_NoDataException if specified data does not contain
+ * GPG encrypted data.
+ *
+ * @throws Crypt_GPG_BadPassphraseException if a required passphrase is
+ * incorrect or if a required passphrase is not specified. See
+ * {@link Crypt_GPG::addDecryptKey()}.
+ *
+ * @throws Crypt_GPG_FileException if the output file is not writeable or
+ * if the input file is not readable.
+ *
+ * @throws Crypt_GPG_Exception if an unknown or unexpected error occurs.
+ * Use the <kbd>debug</kbd> option and file a bug report if these
+ * exceptions occur.
+ */
+ public function decryptFile($encryptedFile, $decryptedFile = null)
+ {
+ return $this->_decrypt($encryptedFile, true, $decryptedFile);
+ }
+
+ // }}}
+ // {{{ decryptAndVerify()
+
+ /**
+ * Decrypts and verifies string data
+ *
+ * This method assumes the required private key is available in the keyring
+ * and throws an exception if the private key is not available. To add a
+ * private key to the keyring, use the {@link Crypt_GPG::importKey()} or
+ * {@link Crypt_GPG::importKeyFile()} methods.
+ *
+ * @param string $encryptedData the encrypted, signed data to be decrypted
+ * and verified.
+ *
+ * @return array two element array. The array has an element 'data'
+ * containing the decrypted data and an element
+ * 'signatures' containing an array of
+ * {@link Crypt_GPG_Signature} objects for the signed data.
+ *
+ * @throws Crypt_GPG_KeyNotFoundException if the private key needed to
+ * decrypt the data is not in the user's keyring.
+ *
+ * @throws Crypt_GPG_NoDataException if specified data does not contain
+ * GPG encrypted data.
+ *
+ * @throws Crypt_GPG_BadPassphraseException if a required passphrase is
+ * incorrect or if a required passphrase is not specified. See
+ * {@link Crypt_GPG::addDecryptKey()}.
+ *
+ * @throws Crypt_GPG_Exception if an unknown or unexpected error occurs.
+ * Use the <kbd>debug</kbd> option and file a bug report if these
+ * exceptions occur.
+ */
+ public function decryptAndVerify($encryptedData)
+ {
+ return $this->_decryptAndVerify($encryptedData, false, null);
+ }
+
+ // }}}
+ // {{{ decryptAndVerifyFile()
+
+ /**
+ * Decrypts and verifies a signed, encrypted file
+ *
+ * This method assumes the required private key is available in the keyring
+ * and throws an exception if the private key is not available. To add a
+ * private key to the keyring, use the {@link Crypt_GPG::importKey()} or
+ * {@link Crypt_GPG::importKeyFile()} methods.
+ *
+ * @param string $encryptedFile the name of the signed, encrypted file to
+ * to decrypt and verify.
+ * @param string $decryptedFile optional. The name of the file to which the
+ * decrypted data should be written. If null
+ * or unspecified, the decrypted data is
+ * returned in the results array.
+ *
+ * @return array two element array. The array has an element 'data'
+ * containing the decrypted data and an element
+ * 'signatures' containing an array of
+ * {@link Crypt_GPG_Signature} objects for the signed data.
+ * If the decrypted data is written to a file, the 'data'
+ * element is null.
+ *
+ * @throws Crypt_GPG_KeyNotFoundException if the private key needed to
+ * decrypt the data is not in the user's keyring.
+ *
+ * @throws Crypt_GPG_NoDataException if specified data does not contain
+ * GPG encrypted data.
+ *
+ * @throws Crypt_GPG_BadPassphraseException if a required passphrase is
+ * incorrect or if a required passphrase is not specified. See
+ * {@link Crypt_GPG::addDecryptKey()}.
+ *
+ * @throws Crypt_GPG_FileException if the output file is not writeable or
+ * if the input file is not readable.
+ *
+ * @throws Crypt_GPG_Exception if an unknown or unexpected error occurs.
+ * Use the <kbd>debug</kbd> option and file a bug report if these
+ * exceptions occur.
+ */
+ public function decryptAndVerifyFile($encryptedFile, $decryptedFile = null)
+ {
+ return $this->_decryptAndVerify($encryptedFile, true, $decryptedFile);
+ }
+
+ // }}}
+ // {{{ sign()
+
+ /**
+ * Signs data
+ *
+ * Data may be signed using any one of the three available signing modes:
+ * - {@link Crypt_GPG::SIGN_MODE_NORMAL}
+ * - {@link Crypt_GPG::SIGN_MODE_CLEAR}
+ * - {@link Crypt_GPG::SIGN_MODE_DETACHED}
+ *
+ * @param string $data the data to be signed.
+ * @param boolean $mode optional. The data signing mode to use. Should
+ * be one of {@link Crypt_GPG::SIGN_MODE_NORMAL},
+ * {@link Crypt_GPG::SIGN_MODE_CLEAR} or
+ * {@link Crypt_GPG::SIGN_MODE_DETACHED}. If not
+ * specified, defaults to
+ * <kbd>Crypt_GPG::SIGN_MODE_NORMAL</kbd>.
+ * @param boolean $armor optional. If true, ASCII armored data is
+ * returned; otherwise, binary data is returned.
+ * Defaults to true. This has no effect if the
+ * mode <kbd>Crypt_GPG::SIGN_MODE_CLEAR</kbd> is
+ * used.
+ * @param boolean $textmode optional. If true, line-breaks in signed data
+ * are normalized. Use this option when signing
+ * e-mail, or for greater compatibility between
+ * systems with different line-break formats.
+ * Defaults to false. This has no effect if the
+ * mode <kbd>Crypt_GPG::SIGN_MODE_CLEAR</kbd> is
+ * used as clear-signing always uses textmode.
+ *
+ * @return string the signed data, or the signature data if a detached
+ * signature is requested.
+ *
+ * @throws Crypt_GPG_KeyNotFoundException if no signing key is specified.
+ * See {@link Crypt_GPG::addSignKey()}.
+ *
+ * @throws Crypt_GPG_BadPassphraseException if a specified passphrase is
+ * incorrect or if a required passphrase is not specified.
+ *
+ * @throws Crypt_GPG_Exception if an unknown or unexpected error occurs.
+ * Use the <kbd>debug</kbd> option and file a bug report if these
+ * exceptions occur.
+ */
+ public function sign($data, $mode = Crypt_GPG::SIGN_MODE_NORMAL,
+ $armor = true, $textmode = false
+ ) {
+ return $this->_sign($data, false, null, $mode, $armor, $textmode);
+ }
+
+ // }}}
+ // {{{ signFile()
+
+ /**
+ * Signs a file
+ *
+ * The file may be signed using any one of the three available signing
+ * modes:
+ * - {@link Crypt_GPG::SIGN_MODE_NORMAL}
+ * - {@link Crypt_GPG::SIGN_MODE_CLEAR}
+ * - {@link Crypt_GPG::SIGN_MODE_DETACHED}
+ *
+ * @param string $filename the name of the file containing the data to
+ * be signed.
+ * @param string $signedFile optional. The name of the file in which the
+ * signed data should be stored. If null or
+ * unspecified, the signed data is returned as a
+ * string.
+ * @param boolean $mode optional. The data signing mode to use. Should
+ * be one of {@link Crypt_GPG::SIGN_MODE_NORMAL},
+ * {@link Crypt_GPG::SIGN_MODE_CLEAR} or
+ * {@link Crypt_GPG::SIGN_MODE_DETACHED}. If not
+ * specified, defaults to
+ * <kbd>Crypt_GPG::SIGN_MODE_NORMAL</kbd>.
+ * @param boolean $armor optional. If true, ASCII armored data is
+ * returned; otherwise, binary data is returned.
+ * Defaults to true. This has no effect if the
+ * mode <kbd>Crypt_GPG::SIGN_MODE_CLEAR</kbd> is
+ * used.
+ * @param boolean $textmode optional. If true, line-breaks in signed data
+ * are normalized. Use this option when signing
+ * e-mail, or for greater compatibility between
+ * systems with different line-break formats.
+ * Defaults to false. This has no effect if the
+ * mode <kbd>Crypt_GPG::SIGN_MODE_CLEAR</kbd> is
+ * used as clear-signing always uses textmode.
+ *
+ * @return void|string if the <kbd>$signedFile</kbd> parameter is null, a
+ * string containing the signed data (or the signature
+ * data if a detached signature is requested) is
+ * returned.
+ *
+ * @throws Crypt_GPG_KeyNotFoundException if no signing key is specified.
+ * See {@link Crypt_GPG::addSignKey()}.
+ *
+ * @throws Crypt_GPG_BadPassphraseException if a specified passphrase is
+ * incorrect or if a required passphrase is not specified.
+ *
+ * @throws Crypt_GPG_FileException if the output file is not writeable or
+ * if the input file is not readable.
+ *
+ * @throws Crypt_GPG_Exception if an unknown or unexpected error occurs.
+ * Use the <kbd>debug</kbd> option and file a bug report if these
+ * exceptions occur.
+ */
+ public function signFile($filename, $signedFile = null,
+ $mode = Crypt_GPG::SIGN_MODE_NORMAL, $armor = true, $textmode = false
+ ) {
+ return $this->_sign(
+ $filename,
+ true,
+ $signedFile,
+ $mode,
+ $armor,
+ $textmode
+ );
+ }
+
+ // }}}
+ // {{{ verify()
+
+ /**
+ * Verifies signed data
+ *
+ * The {@link Crypt_GPG::decrypt()} method may be used to get the original
+ * message if the signed data is not clearsigned and does not use a
+ * detached signature.
+ *
+ * @param string $signedData the signed data to be verified.
+ * @param string $signature optional. If verifying data signed using a
+ * detached signature, this must be the detached
+ * signature data. The data that was signed is
+ * specified in <kbd>$signedData</kbd>.
+ *
+ * @return array an array of {@link Crypt_GPG_Signature} objects for the
+ * signed data. For each signature that is valid, the
+ * {@link Crypt_GPG_Signature::isValid()} will return true.
+ *
+ * @throws Crypt_GPG_NoDataException if the provided data is not signed
+ * data.
+ *
+ * @throws Crypt_GPG_Exception if an unknown or unexpected error occurs.
+ * Use the <kbd>debug</kbd> option and file a bug report if these
+ * exceptions occur.
+ *
+ * @see Crypt_GPG_Signature
+ */
+ public function verify($signedData, $signature = '')
+ {
+ return $this->_verify($signedData, false, $signature);
+ }
+
+ // }}}
+ // {{{ verifyFile()
+
+ /**
+ * Verifies a signed file
+ *
+ * The {@link Crypt_GPG::decryptFile()} method may be used to get the
+ * original message if the signed data is not clearsigned and does not use
+ * a detached signature.
+ *
+ * @param string $filename the signed file to be verified.
+ * @param string $signature optional. If verifying a file signed using a
+ * detached signature, this must be the detached
+ * signature data. The file that was signed is
+ * specified in <kbd>$filename</kbd>.
+ *
+ * @return array an array of {@link Crypt_GPG_Signature} objects for the
+ * signed data. For each signature that is valid, the
+ * {@link Crypt_GPG_Signature::isValid()} will return true.
+ *
+ * @throws Crypt_GPG_NoDataException if the provided data is not signed
+ * data.
+ *
+ * @throws Crypt_GPG_FileException if the input file is not readable.
+ *
+ * @throws Crypt_GPG_Exception if an unknown or unexpected error occurs.
+ * Use the <kbd>debug</kbd> option and file a bug report if these
+ * exceptions occur.
+ *
+ * @see Crypt_GPG_Signature
+ */
+ public function verifyFile($filename, $signature = '')
+ {
+ return $this->_verify($filename, true, $signature);
+ }
+
+ // }}}
+ // {{{ addDecryptKey()
+
+ /**
+ * Adds a key to use for decryption
+ *
+ * @param mixed $key the key to use. This may be a key identifier,
+ * user id, fingerprint, {@link Crypt_GPG_Key} or
+ * {@link Crypt_GPG_SubKey}. The key must be able
+ * to encrypt.
+ * @param string $passphrase optional. The passphrase of the key required
+ * for decryption.
+ *
+ * @return void
+ *
+ * @see Crypt_GPG::decrypt()
+ * @see Crypt_GPG::decryptFile()
+ * @see Crypt_GPG::clearDecryptKeys()
+ * @see Crypt_GPG::_addKey()
+ * @see Crypt_GPG_DecryptStatusHandler
+ *
+ * @sensitive $passphrase
+ */
+ public function addDecryptKey($key, $passphrase = null)
+ {
+ $this->_addKey($this->decryptKeys, true, false, $key, $passphrase);
+ }
+
+ // }}}
+ // {{{ addEncryptKey()
+
+ /**
+ * Adds a key to use for encryption
+ *
+ * @param mixed $key the key to use. This may be a key identifier, user id
+ * user id, fingerprint, {@link Crypt_GPG_Key} or
+ * {@link Crypt_GPG_SubKey}. The key must be able to
+ * encrypt.
+ *
+ * @return void
+ *
+ * @see Crypt_GPG::encrypt()
+ * @see Crypt_GPG::encryptFile()
+ * @see Crypt_GPG::clearEncryptKeys()
+ * @see Crypt_GPG::_addKey()
+ */
+ public function addEncryptKey($key)
+ {
+ $this->_addKey($this->encryptKeys, true, false, $key);
+ }
+
+ // }}}
+ // {{{ addSignKey()
+
+ /**
+ * Adds a key to use for signing
+ *
+ * @param mixed $key the key to use. This may be a key identifier,
+ * user id, fingerprint, {@link Crypt_GPG_Key} or
+ * {@link Crypt_GPG_SubKey}. The key must be able
+ * to sign.
+ * @param string $passphrase optional. The passphrase of the key required
+ * for signing.
+ *
+ * @return void
+ *
+ * @see Crypt_GPG::sign()
+ * @see Crypt_GPG::signFile()
+ * @see Crypt_GPG::clearSignKeys()
+ * @see Crypt_GPG::handleSignStatus()
+ * @see Crypt_GPG::_addKey()
+ *
+ * @sensitive $passphrase
+ */
+ public function addSignKey($key, $passphrase = null)
+ {
+ $this->_addKey($this->signKeys, false, true, $key, $passphrase);
+ }
+
+ // }}}
+ // {{{ clearDecryptKeys()
+
+ /**
+ * Clears all decryption keys
+ *
+ * @return void
+ *
+ * @see Crypt_GPG::decrypt()
+ * @see Crypt_GPG::addDecryptKey()
+ */
+ public function clearDecryptKeys()
+ {
+ $this->decryptKeys = array();
+ }
+
+ // }}}
+ // {{{ clearEncryptKeys()
+
+ /**
+ * Clears all encryption keys
+ *
+ * @return void
+ *
+ * @see Crypt_GPG::encrypt()
+ * @see Crypt_GPG::addEncryptKey()
+ */
+ public function clearEncryptKeys()
+ {
+ $this->encryptKeys = array();
+ }
+
+ // }}}
+ // {{{ clearSignKeys()
+
+ /**
+ * Clears all signing keys
+ *
+ * @return void
+ *
+ * @see Crypt_GPG::sign()
+ * @see Crypt_GPG::addSignKey()
+ */
+ public function clearSignKeys()
+ {
+ $this->signKeys = array();
+ }
+
+ // }}}
+ // {{{ handleSignStatus()
+
+ /**
+ * Handles the status output from GPG for the sign operation
+ *
+ * This method is responsible for sending the passphrase commands when
+ * required by the {@link Crypt_GPG::sign()} method. See <b>doc/DETAILS</b>
+ * in the {@link http://www.gnupg.org/download/ GPG distribution} for
+ * detailed information on GPG's status output.
+ *
+ * @param string $line the status line to handle.
+ *
+ * @return void
+ *
+ * @see Crypt_GPG::sign()
+ */
+ public function handleSignStatus($line)
+ {
+ $tokens = explode(' ', $line);
+ switch ($tokens[0]) {
+ case 'NEED_PASSPHRASE':
+ $subKeyId = $tokens[1];
+ if (array_key_exists($subKeyId, $this->signKeys)) {
+ $passphrase = $this->signKeys[$subKeyId]['passphrase'];
+ $this->engine->sendCommand($passphrase);
+ } else {
+ $this->engine->sendCommand('');
+ }
+ break;
+ }
+ }
+
+ // }}}
+ // {{{ handleImportKeyStatus()
+
+ /**
+ * Handles the status output from GPG for the import operation
+ *
+ * This method is responsible for building the result array that is
+ * returned from the {@link Crypt_GPG::importKey()} method. See
+ * <b>doc/DETAILS</b> in the
+ * {@link http://www.gnupg.org/download/ GPG distribution} for detailed
+ * information on GPG's status output.
+ *
+ * @param string $line the status line to handle.
+ * @param array &$result the current result array being processed.
+ *
+ * @return void
+ *
+ * @see Crypt_GPG::importKey()
+ * @see Crypt_GPG::importKeyFile()
+ * @see Crypt_GPG_Engine::addStatusHandler()
+ */
+ public function handleImportKeyStatus($line, array &$result)
+ {
+ $tokens = explode(' ', $line);
+ switch ($tokens[0]) {
+ case 'IMPORT_OK':
+ $result['fingerprint'] = $tokens[2];
+ break;
+
+ case 'IMPORT_RES':
+ $result['public_imported'] = intval($tokens[3]);
+ $result['public_unchanged'] = intval($tokens[5]);
+ $result['private_imported'] = intval($tokens[11]);
+ $result['private_unchanged'] = intval($tokens[12]);
+ break;
+ }
+ }
+
+ // }}}
+ // {{{ setEngine()
+
+ /**
+ * Sets the I/O engine to use for GnuPG operations
+ *
+ * Normally this method does not need to be used. It provides a means for
+ * dependency injection.
+ *
+ * @param Crypt_GPG_Engine $engine the engine to use.
+ *
+ * @return void
+ */
+ public function setEngine(Crypt_GPG_Engine $engine)
+ {
+ $this->engine = $engine;
+ }
+
+ // }}}
+ // {{{ _addKey()
+
+ /**
+ * Adds a key to one of the internal key arrays
+ *
+ * This handles resolving full key objects from the provided
+ * <kbd>$key</kbd> value.
+ *
+ * @param array &$array the array to which the key should be added.
+ * @param boolean $encrypt whether or not the key must be able to
+ * encrypt.
+ * @param boolean $sign whether or not the key must be able to sign.
+ * @param mixed $key the key to add. This may be a key identifier,
+ * user id, fingerprint, {@link Crypt_GPG_Key} or
+ * {@link Crypt_GPG_SubKey}.
+ * @param string $passphrase optional. The passphrase associated with the
+ * key.
+ *
+ * @return void
+ *
+ * @sensitive $passphrase
+ */
+ private function _addKey(array &$array, $encrypt, $sign, $key,
+ $passphrase = null
+ ) {
+ $subKeys = array();
+
+ if (is_scalar($key)) {
+ $keys = $this->getKeys($key);
+ if (count($keys) == 0) {
+ throw new Crypt_GPG_KeyNotFoundException(
+ 'Key "' . $key . '" not found.', 0, $key);
+ }
+ $key = $keys[0];
+ }
+
+ if ($key instanceof Crypt_GPG_Key) {
+ if ($encrypt && !$key->canEncrypt()) {
+ throw new InvalidArgumentException(
+ 'Key "' . $key . '" cannot encrypt.');
+ }
+
+ if ($sign && !$key->canSign()) {
+ throw new InvalidArgumentException(
+ 'Key "' . $key . '" cannot sign.');
+ }
+
+ foreach ($key->getSubKeys() as $subKey) {
+ $canEncrypt = $subKey->canEncrypt();
+ $canSign = $subKey->canSign();
+ if ( ($encrypt && $sign && $canEncrypt && $canSign)
+ || ($encrypt && !$sign && $canEncrypt)
+ || (!$encrypt && $sign && $canSign)
+ ) {
+ // We add all subkeys that meet the requirements because we
+ // were not told which subkey is required.
+ $subKeys[] = $subKey;
+ }
+ }
+ } elseif ($key instanceof Crypt_GPG_SubKey) {
+ $subKeys[] = $key;
+ }
+
+ if (count($subKeys) === 0) {
+ throw new InvalidArgumentException(
+ 'Key "' . $key . '" is not in a recognized format.');
+ }
+
+ foreach ($subKeys as $subKey) {
+ if ($encrypt && !$subKey->canEncrypt()) {
+ throw new InvalidArgumentException(
+ 'Key "' . $key . '" cannot encrypt.');
+ }
+
+ if ($sign && !$subKey->canSign()) {
+ throw new InvalidArgumentException(
+ 'Key "' . $key . '" cannot sign.');
+ }
+
+ $array[$subKey->getId()] = array(
+ 'fingerprint' => $subKey->getFingerprint(),
+ 'passphrase' => $passphrase
+ );
+ }
+ }
+
+ // }}}
+ // {{{ _importKey()
+
+ /**
+ * Imports a public or private key into the keyring
+ *
+ * @param string $key the key to be imported.
+ * @param boolean $isFile whether or not the input is a filename.
+ *
+ * @return array an associative array containing the following elements:
+ * - <kbd>fingerprint</kbd> - the fingerprint of the
+ * imported key,
+ * - <kbd>public_imported</kbd> - the number of public
+ * keys imported,
+ * - <kbd>public_unchanged</kbd> - the number of unchanged
+ * public keys,
+ * - <kbd>private_imported</kbd> - the number of private
+ * keys imported,
+ * - <kbd>private_unchanged</kbd> - the number of unchanged
+ * private keys.
+ *
+ * @throws Crypt_GPG_NoDataException if the key data is missing or if the
+ * data is is not valid key data.
+ *
+ * @throws Crypt_GPG_FileException if the key file is not readable.
+ *
+ * @throws Crypt_GPG_Exception if an unknown or unexpected error occurs.
+ * Use the <kbd>debug</kbd> option and file a bug report if these
+ * exceptions occur.
+ */
+ private function _importKey($key, $isFile)
+ {
+ $result = array();
+
+ if ($isFile) {
+ $input = @fopen($key, 'rb');
+ if ($input === false) {
+ throw new Crypt_GPG_FileException('Could not open key file "' .
+ $key . '" for importing.', 0, $key);
+ }
+ } else {
+ $input = strval($key);
+ if ($input == '') {
+ throw new Crypt_GPG_NoDataException(
+ 'No valid GPG key data found.', Crypt_GPG::ERROR_NO_DATA);
+ }
+ }
+
+ $arguments = array();
+ $version = $this->engine->getVersion();
+
+ if ( version_compare($version, '1.0.5', 'ge')
+ && version_compare($version, '1.0.7', 'lt')
+ ) {
+ $arguments[] = '--allow-secret-key-import';
+ }
+
+ $this->engine->reset();
+ $this->engine->addStatusHandler(
+ array($this, 'handleImportKeyStatus'),
+ array(&$result)
+ );
+
+ $this->engine->setOperation('--import', $arguments);
+ $this->engine->setInput($input);
+ $this->engine->run();
+
+ if ($isFile) {
+ fclose($input);
+ }
+
+ $code = $this->engine->getErrorCode();
+
+ switch ($code) {
+ case Crypt_GPG::ERROR_DUPLICATE_KEY:
+ case Crypt_GPG::ERROR_NONE:
+ // ignore duplicate key import errors
+ break;
+ case Crypt_GPG::ERROR_NO_DATA:
+ throw new Crypt_GPG_NoDataException(
+ 'No valid GPG key data found.', $code);
+ default:
+ throw new Crypt_GPG_Exception(
+ 'Unknown error importing GPG key. Please use the \'debug\' ' .
+ 'option when creating the Crypt_GPG object, and file a bug ' .
+ 'report at ' . self::BUG_URI, $code);
+ }
+
+ return $result;
+ }
+
+ // }}}
+ // {{{ _encrypt()
+
+ /**
+ * Encrypts data
+ *
+ * @param string $data the data to encrypt.
+ * @param boolean $isFile whether or not the data is a filename.
+ * @param string $outputFile the filename of the file in which to store
+ * the encrypted data. If null, the encrypted
+ * data is returned as a string.
+ * @param boolean $armor if true, ASCII armored data is returned;
+ * otherwise, binary data is returned.
+ *
+ * @return void|string if the <kbd>$outputFile</kbd> parameter is null, a
+ * string containing the encrypted data is returned.
+ *
+ * @throws Crypt_GPG_KeyNotFoundException if no encryption key is specified.
+ * See {@link Crypt_GPG::addEncryptKey()}.
+ *
+ * @throws Crypt_GPG_FileException if the output file is not writeable or
+ * if the input file is not readable.
+ *
+ * @throws Crypt_GPG_Exception if an unknown or unexpected error occurs.
+ * Use the <kbd>debug</kbd> option and file a bug report if these
+ * exceptions occur.
+ */
+ private function _encrypt($data, $isFile, $outputFile, $armor)
+ {
+ if (count($this->encryptKeys) === 0) {
+ throw new Crypt_GPG_KeyNotFoundException(
+ 'No encryption keys specified.');
+ }
+
+ if ($isFile) {
+ $input = @fopen($data, 'rb');
+ if ($input === false) {
+ throw new Crypt_GPG_FileException('Could not open input file "' .
+ $data . '" for encryption.', 0, $data);
+ }
+ } else {
+ $input = strval($data);
+ }
+
+ if ($outputFile === null) {
+ $output = '';
+ } else {
+ $output = @fopen($outputFile, 'wb');
+ if ($output === false) {
+ if ($isFile) {
+ fclose($input);
+ }
+ throw new Crypt_GPG_FileException('Could not open output ' .
+ 'file "' . $outputFile . '" for storing encrypted data.',
+ 0, $outputFile);
+ }
+ }
+
+ $arguments = ($armor) ? array('--armor') : array();
+ foreach ($this->encryptKeys as $key) {
+ $arguments[] = '--recipient ' . escapeshellarg($key['fingerprint']);
+ }
+
+ $this->engine->reset();
+ $this->engine->setInput($input);
+ $this->engine->setOutput($output);
+ $this->engine->setOperation('--encrypt', $arguments);
+ $this->engine->run();
+
+ if ($isFile) {
+ fclose($input);
+ }
+
+ if ($outputFile !== null) {
+ fclose($output);
+ }
+
+ $code = $this->engine->getErrorCode();
+
+ if ($code !== Crypt_GPG::ERROR_NONE) {
+ throw new Crypt_GPG_Exception(
+ 'Unknown error encrypting data. Please use the \'debug\' ' .
+ 'option when creating the Crypt_GPG object, and file a bug ' .
+ 'report at ' . self::BUG_URI, $code);
+ }
+
+ if ($outputFile === null) {
+ return $output;
+ }
+ }
+
+ // }}}
+ // {{{ _decrypt()
+
+ /**
+ * Decrypts data
+ *
+ * @param string $data the data to be decrypted.
+ * @param boolean $isFile whether or not the data is a filename.
+ * @param string $outputFile the name of the file to which the decrypted
+ * data should be written. If null, the decrypted
+ * data is returned as a string.
+ *
+ * @return void|string if the <kbd>$outputFile</kbd> parameter is null, a
+ * string containing the decrypted data is returned.
+ *
+ * @throws Crypt_GPG_KeyNotFoundException if the private key needed to
+ * decrypt the data is not in the user's keyring.
+ *
+ * @throws Crypt_GPG_NoDataException if specified data does not contain
+ * GPG encrypted data.
+ *
+ * @throws Crypt_GPG_BadPassphraseException if a required passphrase is
+ * incorrect or if a required passphrase is not specified. See
+ * {@link Crypt_GPG::addDecryptKey()}.
+ *
+ * @throws Crypt_GPG_FileException if the output file is not writeable or
+ * if the input file is not readable.
+ *
+ * @throws Crypt_GPG_Exception if an unknown or unexpected error occurs.
+ * Use the <kbd>debug</kbd> option and file a bug report if these
+ * exceptions occur.
+ */
+ private function _decrypt($data, $isFile, $outputFile)
+ {
+ if ($isFile) {
+ $input = @fopen($data, 'rb');
+ if ($input === false) {
+ throw new Crypt_GPG_FileException('Could not open input file "' .
+ $data . '" for decryption.', 0, $data);
+ }
+ } else {
+ $input = strval($data);
+ if ($input == '') {
+ throw new Crypt_GPG_NoDataException(
+ 'Cannot decrypt data. No PGP encrypted data was found in '.
+ 'the provided data.', Crypt_GPG::ERROR_NO_DATA);
+ }
+ }
+
+ if ($outputFile === null) {
+ $output = '';
+ } else {
+ $output = @fopen($outputFile, 'wb');
+ if ($output === false) {
+ if ($isFile) {
+ fclose($input);
+ }
+ throw new Crypt_GPG_FileException('Could not open output ' .
+ 'file "' . $outputFile . '" for storing decrypted data.',
+ 0, $outputFile);
+ }
+ }
+
+ $handler = new Crypt_GPG_DecryptStatusHandler($this->engine,
+ $this->decryptKeys);
+
+ $this->engine->reset();
+ $this->engine->addStatusHandler(array($handler, 'handle'));
+ $this->engine->setOperation('--decrypt');
+ $this->engine->setInput($input);
+ $this->engine->setOutput($output);
+ $this->engine->run();
+
+ if ($isFile) {
+ fclose($input);
+ }
+
+ if ($outputFile !== null) {
+ fclose($output);
+ }
+
+ // if there was any problem decrypting the data, the handler will
+ // deal with it here.
+ $handler->throwException();
+
+ if ($outputFile === null) {
+ return $output;
+ }
+ }
+
+ // }}}
+ // {{{ _sign()
+
+ /**
+ * Signs data
+ *
+ * @param string $data the data to be signed.
+ * @param boolean $isFile whether or not the data is a filename.
+ * @param string $outputFile the name of the file in which the signed data
+ * should be stored. If null, the signed data is
+ * returned as a string.
+ * @param boolean $mode the data signing mode to use. Should be one of
+ * {@link Crypt_GPG::SIGN_MODE_NORMAL},
+ * {@link Crypt_GPG::SIGN_MODE_CLEAR} or
+ * {@link Crypt_GPG::SIGN_MODE_DETACHED}.
+ * @param boolean $armor if true, ASCII armored data is returned;
+ * otherwise, binary data is returned. This has
+ * no effect if the mode
+ * <kbd>Crypt_GPG::SIGN_MODE_CLEAR</kbd> is
+ * used.
+ * @param boolean $textmode if true, line-breaks in signed data be
+ * normalized. Use this option when signing
+ * e-mail, or for greater compatibility between
+ * systems with different line-break formats.
+ * Defaults to false. This has no effect if the
+ * mode <kbd>Crypt_GPG::SIGN_MODE_CLEAR</kbd> is
+ * used as clear-signing always uses textmode.
+ *
+ * @return void|string if the <kbd>$outputFile</kbd> parameter is null, a
+ * string containing the signed data (or the signature
+ * data if a detached signature is requested) is
+ * returned.
+ *
+ * @throws Crypt_GPG_KeyNotFoundException if no signing key is specified.
+ * See {@link Crypt_GPG::addSignKey()}.
+ *
+ * @throws Crypt_GPG_BadPassphraseException if a specified passphrase is
+ * incorrect or if a required passphrase is not specified.
+ *
+ * @throws Crypt_GPG_FileException if the output file is not writeable or
+ * if the input file is not readable.
+ *
+ * @throws Crypt_GPG_Exception if an unknown or unexpected error occurs.
+ * Use the <kbd>debug</kbd> option and file a bug report if these
+ * exceptions occur.
+ */
+ private function _sign($data, $isFile, $outputFile, $mode, $armor,
+ $textmode
+ ) {
+ if (count($this->signKeys) === 0) {
+ throw new Crypt_GPG_KeyNotFoundException(
+ 'No signing keys specified.');
+ }
+
+ if ($isFile) {
+ $input = @fopen($data, 'rb');
+ if ($input === false) {
+ throw new Crypt_GPG_FileException('Could not open input ' .
+ 'file "' . $data . '" for signing.', 0, $data);
+ }
+ } else {
+ $input = strval($data);
+ }
+
+ if ($outputFile === null) {
+ $output = '';
+ } else {
+ $output = @fopen($outputFile, 'wb');
+ if ($output === false) {
+ if ($isFile) {
+ fclose($input);
+ }
+ throw new Crypt_GPG_FileException('Could not open output ' .
+ 'file "' . $outputFile . '" for storing signed ' .
+ 'data.', 0, $outputFile);
+ }
+ }
+
+ switch ($mode) {
+ case Crypt_GPG::SIGN_MODE_DETACHED:
+ $operation = '--detach-sign';
+ break;
+ case Crypt_GPG::SIGN_MODE_CLEAR:
+ $operation = '--clearsign';
+ break;
+ case Crypt_GPG::SIGN_MODE_NORMAL:
+ default:
+ $operation = '--sign';
+ break;
+ }
+
+ $arguments = array();
+
+ if ($armor) {
+ $arguments[] = '--armor';
+ }
+ if ($textmode) {
+ $arguments[] = '--textmode';
+ }
+
+ foreach ($this->signKeys as $key) {
+ $arguments[] = '--local-user ' .
+ escapeshellarg($key['fingerprint']);
+ }
+
+ $this->engine->reset();
+ $this->engine->addStatusHandler(array($this, 'handleSignStatus'));
+ $this->engine->setInput($input);
+ $this->engine->setOutput($output);
+ $this->engine->setOperation($operation, $arguments);
+ $this->engine->run();
+
+ if ($isFile) {
+ fclose($input);
+ }
+
+ if ($outputFile !== null) {
+ fclose($output);
+ }
+
+ $code = $this->engine->getErrorCode();
+
+ switch ($code) {
+ case Crypt_GPG::ERROR_NONE:
+ break;
+ case Crypt_GPG::ERROR_KEY_NOT_FOUND:
+ throw new Crypt_GPG_KeyNotFoundException(
+ 'Cannot sign data. Private key not found. Import the '.
+ 'private key before trying to sign data.', $code,
+ $this->engine->getErrorKeyId());
+ case Crypt_GPG::ERROR_BAD_PASSPHRASE:
+ throw new Crypt_GPG_BadPassphraseException(
+ 'Cannot sign data. Incorrect passphrase provided.', $code);
+ case Crypt_GPG::ERROR_MISSING_PASSPHRASE:
+ throw new Crypt_GPG_BadPassphraseException(
+ 'Cannot sign data. No passphrase provided.', $code);
+ default:
+ throw new Crypt_GPG_Exception(
+ 'Unknown error signing data. Please use the \'debug\' option ' .
+ 'when creating the Crypt_GPG object, and file a bug report ' .
+ 'at ' . self::BUG_URI, $code);
+ }
+
+ if ($outputFile === null) {
+ return $output;
+ }
+ }
+
+ // }}}
+ // {{{ _encryptAndSign()
+
+ /**
+ * Encrypts and signs data
+ *
+ * @param string $data the data to be encrypted and signed.
+ * @param boolean $isFile whether or not the data is a filename.
+ * @param string $outputFile the name of the file in which the encrypted,
+ * signed data should be stored. If null, the
+ * encrypted, signed data is returned as a
+ * string.
+ * @param boolean $armor if true, ASCII armored data is returned;
+ * otherwise, binary data is returned.
+ *
+ * @return void|string if the <kbd>$outputFile</kbd> parameter is null, a
+ * string containing the encrypted, signed data is
+ * returned.
+ *
+ * @throws Crypt_GPG_KeyNotFoundException if no encryption key is specified
+ * or if no signing key is specified. See
+ * {@link Crypt_GPG::addEncryptKey()} and
+ * {@link Crypt_GPG::addSignKey()}.
+ *
+ * @throws Crypt_GPG_BadPassphraseException if a specified passphrase is
+ * incorrect or if a required passphrase is not specified.
+ *
+ * @throws Crypt_GPG_FileException if the output file is not writeable or
+ * if the input file is not readable.
+ *
+ * @throws Crypt_GPG_Exception if an unknown or unexpected error occurs.
+ * Use the <kbd>debug</kbd> option and file a bug report if these
+ * exceptions occur.
+ */
+ private function _encryptAndSign($data, $isFile, $outputFile, $armor)
+ {
+ if (count($this->signKeys) === 0) {
+ throw new Crypt_GPG_KeyNotFoundException(
+ 'No signing keys specified.');
+ }
+
+ if (count($this->encryptKeys) === 0) {
+ throw new Crypt_GPG_KeyNotFoundException(
+ 'No encryption keys specified.');
+ }
+
+
+ if ($isFile) {
+ $input = @fopen($data, 'rb');
+ if ($input === false) {
+ throw new Crypt_GPG_FileException('Could not open input ' .
+ 'file "' . $data . '" for encrypting and signing.', 0,
+ $data);
+ }
+ } else {
+ $input = strval($data);
+ }
+
+ if ($outputFile === null) {
+ $output = '';
+ } else {
+ $output = @fopen($outputFile, 'wb');
+ if ($output === false) {
+ if ($isFile) {
+ fclose($input);
+ }
+ throw new Crypt_GPG_FileException('Could not open output ' .
+ 'file "' . $outputFile . '" for storing encrypted, ' .
+ 'signed data.', 0, $outputFile);
+ }
+ }
+
+ $arguments = ($armor) ? array('--armor') : array();
+
+ foreach ($this->signKeys as $key) {
+ $arguments[] = '--local-user ' .
+ escapeshellarg($key['fingerprint']);
+ }
+
+ foreach ($this->encryptKeys as $key) {
+ $arguments[] = '--recipient ' . escapeshellarg($key['fingerprint']);
+ }
+
+ $this->engine->reset();
+ $this->engine->addStatusHandler(array($this, 'handleSignStatus'));
+ $this->engine->setInput($input);
+ $this->engine->setOutput($output);
+ $this->engine->setOperation('--encrypt --sign', $arguments);
+ $this->engine->run();
+
+ if ($isFile) {
+ fclose($input);
+ }
+
+ if ($outputFile !== null) {
+ fclose($output);
+ }
+
+ $code = $this->engine->getErrorCode();
+
+ switch ($code) {
+ case Crypt_GPG::ERROR_NONE:
+ break;
+ case Crypt_GPG::ERROR_KEY_NOT_FOUND:
+ throw new Crypt_GPG_KeyNotFoundException(
+ 'Cannot sign encrypted data. Private key not found. Import '.
+ 'the private key before trying to sign the encrypted data.',
+ $code, $this->engine->getErrorKeyId());
+ case Crypt_GPG::ERROR_BAD_PASSPHRASE:
+ throw new Crypt_GPG_BadPassphraseException(
+ 'Cannot sign encrypted data. Incorrect passphrase provided.',
+ $code);
+ case Crypt_GPG::ERROR_MISSING_PASSPHRASE:
+ throw new Crypt_GPG_BadPassphraseException(
+ 'Cannot sign encrypted data. No passphrase provided.', $code);
+ default:
+ throw new Crypt_GPG_Exception(
+ 'Unknown error encrypting and signing data. Please use the ' .
+ '\'debug\' option when creating the Crypt_GPG object, and ' .
+ 'file a bug report at ' . self::BUG_URI, $code);
+ }
+
+ if ($outputFile === null) {
+ return $output;
+ }
+ }
+
+ // }}}
+ // {{{ _verify()
+
+ /**
+ * Verifies data
+ *
+ * @param string $data the signed data to be verified.
+ * @param boolean $isFile whether or not the data is a filename.
+ * @param string $signature if verifying a file signed using a detached
+ * signature, this must be the detached signature
+ * data. Otherwise, specify ''.
+ *
+ * @return array an array of {@link Crypt_GPG_Signature} objects for the
+ * signed data.
+ *
+ * @throws Crypt_GPG_NoDataException if the provided data is not signed
+ * data.
+ *
+ * @throws Crypt_GPG_FileException if the input file is not readable.
+ *
+ * @throws Crypt_GPG_Exception if an unknown or unexpected error occurs.
+ * Use the <kbd>debug</kbd> option and file a bug report if these
+ * exceptions occur.
+ *
+ * @see Crypt_GPG_Signature
+ */
+ private function _verify($data, $isFile, $signature)
+ {
+ if ($signature == '') {
+ $operation = '--verify';
+ $arguments = array();
+ } else {
+ // Signed data goes in FD_MESSAGE, detached signature data goes in
+ // FD_INPUT.
+ $operation = '--verify - "-&' . Crypt_GPG_Engine::FD_MESSAGE. '"';
+ $arguments = array('--enable-special-filenames');
+ }
+
+ $handler = new Crypt_GPG_VerifyStatusHandler();
+
+ if ($isFile) {
+ $input = @fopen($data, 'rb');
+ if ($input === false) {
+ throw new Crypt_GPG_FileException('Could not open input ' .
+ 'file "' . $data . '" for verifying.', 0, $data);
+ }
+ } else {
+ $input = strval($data);
+ if ($input == '') {
+ throw new Crypt_GPG_NoDataException(
+ 'No valid signature data found.', Crypt_GPG::ERROR_NO_DATA);
+ }
+ }
+
+ $this->engine->reset();
+ $this->engine->addStatusHandler(array($handler, 'handle'));
+
+ if ($signature == '') {
+ // signed or clearsigned data
+ $this->engine->setInput($input);
+ } else {
+ // detached signature
+ $this->engine->setInput($signature);
+ $this->engine->setMessage($input);
+ }
+
+ $this->engine->setOperation($operation, $arguments);
+ $this->engine->run();
+
+ if ($isFile) {
+ fclose($input);
+ }
+
+ $code = $this->engine->getErrorCode();
+
+ switch ($code) {
+ case Crypt_GPG::ERROR_NONE:
+ case Crypt_GPG::ERROR_BAD_SIGNATURE:
+ break;
+ case Crypt_GPG::ERROR_NO_DATA:
+ throw new Crypt_GPG_NoDataException(
+ 'No valid signature data found.', $code);
+ case Crypt_GPG::ERROR_KEY_NOT_FOUND:
+ throw new Crypt_GPG_KeyNotFoundException(
+ 'Public key required for data verification not in keyring.',
+ $code, $this->engine->getErrorKeyId());
+ default:
+ throw new Crypt_GPG_Exception(
+ 'Unknown error validating signature details. Please use the ' .
+ '\'debug\' option when creating the Crypt_GPG object, and ' .
+ 'file a bug report at ' . self::BUG_URI, $code);
+ }
+
+ return $handler->getSignatures();
+ }
+
+ // }}}
+ // {{{ _decryptAndVerify()
+
+ /**
+ * Decrypts and verifies encrypted, signed data
+ *
+ * @param string $data the encrypted signed data to be decrypted and
+ * verified.
+ * @param boolean $isFile whether or not the data is a filename.
+ * @param string $outputFile the name of the file to which the decrypted
+ * data should be written. If null, the decrypted
+ * data is returned in the results array.
+ *
+ * @return array two element array. The array has an element 'data'
+ * containing the decrypted data and an element
+ * 'signatures' containing an array of
+ * {@link Crypt_GPG_Signature} objects for the signed data.
+ * If the decrypted data is written to a file, the 'data'
+ * element is null.
+ *
+ * @throws Crypt_GPG_KeyNotFoundException if the private key needed to
+ * decrypt the data is not in the user's keyring or it the public
+ * key needed for verification is not in the user's keyring.
+ *
+ * @throws Crypt_GPG_NoDataException if specified data does not contain
+ * GPG signed, encrypted data.
+ *
+ * @throws Crypt_GPG_BadPassphraseException if a required passphrase is
+ * incorrect or if a required passphrase is not specified. See
+ * {@link Crypt_GPG::addDecryptKey()}.
+ *
+ * @throws Crypt_GPG_FileException if the output file is not writeable or
+ * if the input file is not readable.
+ *
+ * @throws Crypt_GPG_Exception if an unknown or unexpected error occurs.
+ * Use the <kbd>debug</kbd> option and file a bug report if these
+ * exceptions occur.
+ *
+ * @see Crypt_GPG_Signature
+ */
+ private function _decryptAndVerify($data, $isFile, $outputFile)
+ {
+ if ($isFile) {
+ $input = @fopen($data, 'rb');
+ if ($input === false) {
+ throw new Crypt_GPG_FileException('Could not open input ' .
+ 'file "' . $data . '" for decrypting and verifying.', 0,
+ $data);
+ }
+ } else {
+ $input = strval($data);
+ if ($input == '') {
+ throw new Crypt_GPG_NoDataException(
+ 'No valid encrypted signed data found.',
+ Crypt_GPG::ERROR_NO_DATA);
+ }
+ }
+
+ if ($outputFile === null) {
+ $output = '';
+ } else {
+ $output = @fopen($outputFile, 'wb');
+ if ($output === false) {
+ if ($isFile) {
+ fclose($input);
+ }
+ throw new Crypt_GPG_FileException('Could not open output ' .
+ 'file "' . $outputFile . '" for storing decrypted data.',
+ 0, $outputFile);
+ }
+ }
+
+ $verifyHandler = new Crypt_GPG_VerifyStatusHandler();
+
+ $decryptHandler = new Crypt_GPG_DecryptStatusHandler($this->engine,
+ $this->decryptKeys);
+
+ $this->engine->reset();
+ $this->engine->addStatusHandler(array($verifyHandler, 'handle'));
+ $this->engine->addStatusHandler(array($decryptHandler, 'handle'));
+ $this->engine->setInput($input);
+ $this->engine->setOutput($output);
+ $this->engine->setOperation('--decrypt');
+ $this->engine->run();
+
+ if ($isFile) {
+ fclose($input);
+ }
+
+ if ($outputFile !== null) {
+ fclose($output);
+ }
+
+ $return = array(
+ 'data' => null,
+ 'signatures' => $verifyHandler->getSignatures()
+ );
+
+ // if there was any problem decrypting the data, the handler will
+ // deal with it here.
+ try {
+ $decryptHandler->throwException();
+ } catch (Exception $e) {
+ if ($e instanceof Crypt_GPG_KeyNotFoundException) {
+ throw new Crypt_GPG_KeyNotFoundException(
+ 'Public key required for data verification not in ',
+ 'the keyring. Either no suitable private decryption key ' .
+ 'is in the keyring or the public key required for data ' .
+ 'verification is not in the keyring. Import a suitable ' .
+ 'key before trying to decrypt and verify this data.',
+ self::ERROR_KEY_NOT_FOUND, $this->engine->getErrorKeyId());
+ }
+
+ if ($e instanceof Crypt_GPG_NoDataException) {
+ throw new Crypt_GPG_NoDataException(
+ 'Cannot decrypt and verify data. No PGP encrypted data ' .
+ 'was found in the provided data.', self::ERROR_NO_DATA);
+ }
+
+ throw $e;
+ }
+
+ if ($outputFile === null) {
+ $return['data'] = $output;
+ }
+
+ return $return;
+ }
+
+ // }}}
+}
+
+// }}}
+
+?>
diff --git a/plugins/enigma/lib/Crypt/GPG/DecryptStatusHandler.php b/plugins/enigma/lib/Crypt/GPG/DecryptStatusHandler.php
new file mode 100644
index 000000000..40e8d50ed
--- /dev/null
+++ b/plugins/enigma/lib/Crypt/GPG/DecryptStatusHandler.php
@@ -0,0 +1,336 @@
+<?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
+ * decrypt 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 2008-2009 silverorange
+ * @license http://www.gnu.org/copyleft/lesser.html LGPL License 2.1
+ * @version CVS: $Id: DecryptStatusHandler.php 302814 2010-08-26 15:43:07Z gauthierm $
+ * @link http://pear.php.net/package/Crypt_GPG
+ * @link http://www.gnupg.org/
+ */
+
+/**
+ * Crypt_GPG base class
+ */
+require_once 'Crypt/GPG.php';
+
+/**
+ * GPG exception classes
+ */
+require_once 'Crypt/GPG/Exceptions.php';
+
+
+/**
+ * Status line handler for the decrypt 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 sending the passphrase commands when required
+ * by the {@link Crypt_GPG::decrypt()} 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 decrypt operation.
+ *
+ * This class is also responsible for parsing error status and throwing a
+ * meaningful exception in the event that decryption fails.
+ *
+ * @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_DecryptStatusHandler
+{
+ // {{{ protected properties
+
+ /**
+ * Keys used to decrypt
+ *
+ * The array is of the form:
+ * <code>
+ * array(
+ * $key_id => array(
+ * 'fingerprint' => $fingerprint,
+ * 'passphrase' => $passphrase
+ * )
+ * );
+ * </code>
+ *
+ * @var array
+ */
+ protected $keys = array();
+
+ /**
+ * Engine used to which passphrases are passed
+ *
+ * @var Crypt_GPG_Engine
+ */
+ protected $engine = null;
+
+ /**
+ * The id of the current sub-key used for decryption
+ *
+ * @var string
+ */
+ protected $currentSubKey = '';
+
+ /**
+ * Whether or not decryption succeeded
+ *
+ * If the message is only signed (compressed) and not encrypted, this is
+ * always true. If the message is encrypted, this flag is set to false
+ * until we know the decryption succeeded.
+ *
+ * @var boolean
+ */
+ protected $decryptionOkay = true;
+
+ /**
+ * Whether or not there was no data for decryption
+ *
+ * @var boolean
+ */
+ protected $noData = false;
+
+ /**
+ * Keys for which the passhprase is missing
+ *
+ * This contains primary user ids indexed by sub-key id and is used to
+ * create helpful exception messages.
+ *
+ * @var array
+ */
+ protected $missingPassphrases = array();
+
+ /**
+ * Keys for which the passhprase is incorrect
+ *
+ * This contains primary user ids indexed by sub-key id and is used to
+ * create helpful exception messages.
+ *
+ * @var array
+ */
+ protected $badPassphrases = array();
+
+ /**
+ * Keys that can be used to decrypt the data but are missing from the
+ * keychain
+ *
+ * This is an array with both the key and value being the sub-key id of
+ * the missing keys.
+ *
+ * @var array
+ */
+ protected $missingKeys = array();
+
+ // }}}
+ // {{{ __construct()
+
+ /**
+ * Creates a new decryption status handler
+ *
+ * @param Crypt_GPG_Engine $engine the GPG engine to which passphrases are
+ * passed.
+ * @param array $keys the decryption keys to use.
+ */
+ public function __construct(Crypt_GPG_Engine $engine, array $keys)
+ {
+ $this->engine = $engine;
+ $this->keys = $keys;
+ }
+
+ // }}}
+ // {{{ 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 'ENC_TO':
+ // Now we know the message is encrypted. Set flag to check if
+ // decryption succeeded.
+ $this->decryptionOkay = false;
+
+ // this is the new key message
+ $this->currentSubKeyId = $tokens[1];
+ break;
+
+ case 'NEED_PASSPHRASE':
+ // send passphrase to the GPG engine
+ $subKeyId = $tokens[1];
+ if (array_key_exists($subKeyId, $this->keys)) {
+ $passphrase = $this->keys[$subKeyId]['passphrase'];
+ $this->engine->sendCommand($passphrase);
+ } else {
+ $this->engine->sendCommand('');
+ }
+ break;
+
+ case 'USERID_HINT':
+ // remember the user id for pretty exception messages
+ $this->badPassphrases[$tokens[1]]
+ = implode(' ', array_splice($tokens, 2));
+
+ break;
+
+ case 'GOOD_PASSPHRASE':
+ // if we got a good passphrase, remove the key from the list of
+ // bad passphrases.
+ unset($this->badPassphrases[$this->currentSubKeyId]);
+ break;
+
+ case 'MISSING_PASSPHRASE':
+ $this->missingPassphrases[$this->currentSubKeyId]
+ = $this->currentSubKeyId;
+
+ break;
+
+ case 'NO_SECKEY':
+ // note: this message is also received if there are multiple
+ // recipients and a previous key had a correct passphrase.
+ $this->missingKeys[$tokens[1]] = $tokens[1];
+ break;
+
+ case 'NODATA':
+ $this->noData = true;
+ break;
+
+ case 'DECRYPTION_OKAY':
+ // If the message is encrypted, this is the all-clear signal.
+ $this->decryptionOkay = true;
+ break;
+ }
+ }
+
+ // }}}
+ // {{{ throwException()
+
+ /**
+ * Takes the final status of the decrypt operation and throws an
+ * appropriate exception
+ *
+ * If decryption was successful, no exception is thrown.
+ *
+ * @return void
+ *
+ * @throws Crypt_GPG_KeyNotFoundException if the private key needed to
+ * decrypt the data is not in the user's keyring.
+ *
+ * @throws Crypt_GPG_NoDataException if specified data does not contain
+ * GPG encrypted data.
+ *
+ * @throws Crypt_GPG_BadPassphraseException if a required passphrase is
+ * incorrect or if a required passphrase is not specified. See
+ * {@link Crypt_GPG::addDecryptKey()}.
+ *
+ * @throws Crypt_GPG_Exception if an unknown or unexpected error occurs.
+ * Use the <i>debug</i> option and file a bug report if these
+ * exceptions occur.
+ */
+ public function throwException()
+ {
+ $code = Crypt_GPG::ERROR_NONE;
+
+ if (!$this->decryptionOkay) {
+ if (count($this->badPassphrases) > 0) {
+ $code = Crypt_GPG::ERROR_BAD_PASSPHRASE;
+ } elseif (count($this->missingKeys) > 0) {
+ $code = Crypt_GPG::ERROR_KEY_NOT_FOUND;
+ } else {
+ $code = Crypt_GPG::ERROR_UNKNOWN;
+ }
+ } elseif ($this->noData) {
+ $code = Crypt_GPG::ERROR_NO_DATA;
+ }
+
+ switch ($code) {
+ case Crypt_GPG::ERROR_NONE:
+ break;
+
+ case Crypt_GPG::ERROR_KEY_NOT_FOUND:
+ if (count($this->missingKeys) > 0) {
+ $keyId = reset($this->missingKeys);
+ } else {
+ $keyId = '';
+ }
+ throw new Crypt_GPG_KeyNotFoundException(
+ 'Cannot decrypt data. No suitable private key is in the ' .
+ 'keyring. Import a suitable private key before trying to ' .
+ 'decrypt this data.', $code, $keyId);
+
+ case Crypt_GPG::ERROR_BAD_PASSPHRASE:
+ $badPassphrases = array_diff_key(
+ $this->badPassphrases,
+ $this->missingPassphrases
+ );
+
+ $missingPassphrases = array_intersect_key(
+ $this->badPassphrases,
+ $this->missingPassphrases
+ );
+
+ $message = 'Cannot decrypt data.';
+ if (count($badPassphrases) > 0) {
+ $message = ' Incorrect passphrase provided for keys: "' .
+ implode('", "', $badPassphrases) . '".';
+ }
+ if (count($missingPassphrases) > 0) {
+ $message = ' No passphrase provided for keys: "' .
+ implode('", "', $badPassphrases) . '".';
+ }
+
+ throw new Crypt_GPG_BadPassphraseException($message, $code,
+ $badPassphrases, $missingPassphrases);
+
+ case Crypt_GPG::ERROR_NO_DATA:
+ throw new Crypt_GPG_NoDataException(
+ 'Cannot decrypt data. No PGP encrypted data was found in '.
+ 'the provided data.', $code);
+
+ default:
+ throw new Crypt_GPG_Exception(
+ 'Unknown error decrypting data.', $code);
+ }
+ }
+
+ // }}}
+}
+
+?>
diff --git a/plugins/enigma/lib/Crypt/GPG/Engine.php b/plugins/enigma/lib/Crypt/GPG/Engine.php
new file mode 100644
index 000000000..081be8e21
--- /dev/null
+++ b/plugins/enigma/lib/Crypt/GPG/Engine.php
@@ -0,0 +1,1758 @@
+<?php
+
+/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
+
+/**
+ * Crypt_GPG is a package to use GPG from PHP
+ *
+ * This file contains an engine that handles GPG subprocess control and I/O.
+ * PHP's process manipulation functions are used to handle the GPG subprocess.
+ *
+ * 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 Nathan Fredrickson <nathan@silverorange.com>
+ * @author Michael Gauthier <mike@silverorange.com>
+ * @copyright 2005-2010 silverorange
+ * @license http://www.gnu.org/copyleft/lesser.html LGPL License 2.1
+ * @version CVS: $Id: Engine.php 302822 2010-08-26 17:30:57Z gauthierm $
+ * @link http://pear.php.net/package/Crypt_GPG
+ * @link http://www.gnupg.org/
+ */
+
+/**
+ * Crypt_GPG base class.
+ */
+require_once 'Crypt/GPG.php';
+
+/**
+ * GPG exception classes.
+ */
+require_once 'Crypt/GPG/Exceptions.php';
+
+/**
+ * Standard PEAR exception is used if GPG binary is not found.
+ */
+require_once 'PEAR/Exception.php';
+
+// {{{ class Crypt_GPG_Engine
+
+/**
+ * Native PHP Crypt_GPG I/O engine
+ *
+ * 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 engine uses PHP's native process control functions to directly control
+ * the GPG process. The GPG executable is required to be on the system.
+ *
+ * All data is passed to the GPG subprocess using file descriptors. This is the
+ * most secure method of passing data to the GPG subprocess.
+ *
+ * @category Encryption
+ * @package Crypt_GPG
+ * @author Nathan Fredrickson <nathan@silverorange.com>
+ * @author Michael Gauthier <mike@silverorange.com>
+ * @copyright 2005-2010 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_Engine
+{
+ // {{{ constants
+
+ /**
+ * Size of data chunks that are sent to and retrieved from the IPC pipes.
+ *
+ * PHP reads 8192 bytes. If this is set to less than 8192, PHP reads 8192
+ * and buffers the rest so we might as well just read 8192.
+ *
+ * Using values other than 8192 also triggers PHP bugs.
+ *
+ * @see http://bugs.php.net/bug.php?id=35224
+ */
+ const CHUNK_SIZE = 8192;
+
+ /**
+ * Standard input file descriptor. This is used to pass data to the GPG
+ * process.
+ */
+ const FD_INPUT = 0;
+
+ /**
+ * Standard output file descriptor. This is used to receive normal output
+ * from the GPG process.
+ */
+ const FD_OUTPUT = 1;
+
+ /**
+ * Standard output file descriptor. This is used to receive error output
+ * from the GPG process.
+ */
+ const FD_ERROR = 2;
+
+ /**
+ * GPG status output file descriptor. The status file descriptor outputs
+ * detailed information for many GPG commands. See the second section of
+ * the file <b>doc/DETAILS</b> in the
+ * {@link http://www.gnupg.org/download/ GPG package} for a detailed
+ * description of GPG's status output.
+ */
+ const FD_STATUS = 3;
+
+ /**
+ * Command input file descriptor. This is used for methods requiring
+ * passphrases.
+ */
+ const FD_COMMAND = 4;
+
+ /**
+ * Extra message input file descriptor. This is used for passing signed
+ * data when verifying a detached signature.
+ */
+ const FD_MESSAGE = 5;
+
+ /**
+ * Minimum version of GnuPG that is supported.
+ */
+ const MIN_VERSION = '1.0.2';
+
+ // }}}
+ // {{{ private class properties
+
+ /**
+ * Whether or not to use debugging mode
+ *
+ * When set to true, every GPG command is echoed before it is run. Sensitive
+ * data is always handled using pipes and is not specified as part of the
+ * command. As a result, sensitive data is never displayed when debug is
+ * enabled. Sensitive data includes private key data and passphrases.
+ *
+ * Debugging is off by default.
+ *
+ * @var boolean
+ * @see Crypt_GPG_Engine::__construct()
+ */
+ private $_debug = false;
+
+ /**
+ * Location of GPG binary
+ *
+ * @var string
+ * @see Crypt_GPG_Engine::__construct()
+ * @see Crypt_GPG_Engine::_getBinary()
+ */
+ private $_binary = '';
+
+ /**
+ * Directory containing the GPG key files
+ *
+ * This property only contains the path when the <i>homedir</i> option
+ * is specified in the constructor.
+ *
+ * @var string
+ * @see Crypt_GPG_Engine::__construct()
+ */
+ private $_homedir = '';
+
+ /**
+ * File path of the public keyring
+ *
+ * This property only contains the file path when the <i>public_keyring</i>
+ * option is specified in the constructor.
+ *
+ * If the specified file path starts with <kbd>~/</kbd>, the path is
+ * relative to the <i>homedir</i> if specified, otherwise to
+ * <kbd>~/.gnupg</kbd>.
+ *
+ * @var string
+ * @see Crypt_GPG_Engine::__construct()
+ */
+ private $_publicKeyring = '';
+
+ /**
+ * File path of the private (secret) keyring
+ *
+ * This property only contains the file path when the <i>private_keyring</i>
+ * option is specified in the constructor.
+ *
+ * If the specified file path starts with <kbd>~/</kbd>, the path is
+ * relative to the <i>homedir</i> if specified, otherwise to
+ * <kbd>~/.gnupg</kbd>.
+ *
+ * @var string
+ * @see Crypt_GPG_Engine::__construct()
+ */
+ private $_privateKeyring = '';
+
+ /**
+ * File path of the trust database
+ *
+ * This property only contains the file path when the <i>trust_db</i>
+ * option is specified in the constructor.
+ *
+ * If the specified file path starts with <kbd>~/</kbd>, the path is
+ * relative to the <i>homedir</i> if specified, otherwise to
+ * <kbd>~/.gnupg</kbd>.
+ *
+ * @var string
+ * @see Crypt_GPG_Engine::__construct()
+ */
+ private $_trustDb = '';
+
+ /**
+ * Array of pipes used for communication with the GPG binary
+ *
+ * This is an array of file descriptor resources.
+ *
+ * @var array
+ */
+ private $_pipes = array();
+
+ /**
+ * Array of currently opened pipes
+ *
+ * This array is used to keep track of remaining opened pipes so they can
+ * be closed when the GPG subprocess is finished. This array is a subset of
+ * the {@link Crypt_GPG_Engine::$_pipes} array and contains opened file
+ * descriptor resources.
+ *
+ * @var array
+ * @see Crypt_GPG_Engine::_closePipe()
+ */
+ private $_openPipes = array();
+
+ /**
+ * A handle for the GPG process
+ *
+ * @var resource
+ */
+ private $_process = null;
+
+ /**
+ * Whether or not the operating system is Darwin (OS X)
+ *
+ * @var boolean
+ */
+ private $_isDarwin = false;
+
+ /**
+ * Commands to be sent to GPG's command input stream
+ *
+ * @var string
+ * @see Crypt_GPG_Engine::sendCommand()
+ */
+ private $_commandBuffer = '';
+
+ /**
+ * Array of status line handlers
+ *
+ * @var array
+ * @see Crypt_GPG_Engine::addStatusHandler()
+ */
+ private $_statusHandlers = array();
+
+ /**
+ * Array of error line handlers
+ *
+ * @var array
+ * @see Crypt_GPG_Engine::addErrorHandler()
+ */
+ private $_errorHandlers = array();
+
+ /**
+ * The error code of the current operation
+ *
+ * @var integer
+ * @see Crypt_GPG_Engine::getErrorCode()
+ */
+ private $_errorCode = Crypt_GPG::ERROR_NONE;
+
+ /**
+ * File related to the error code of the current operation
+ *
+ * @var string
+ * @see Crypt_GPG_Engine::getErrorFilename()
+ */
+ private $_errorFilename = '';
+
+ /**
+ * Key id related to the error code of the current operation
+ *
+ * @var string
+ * @see Crypt_GPG_Engine::getErrorKeyId()
+ */
+ private $_errorkeyId = '';
+
+ /**
+ * The number of currently needed passphrases
+ *
+ * If this is not zero when the GPG command is completed, the error code is
+ * set to {@link Crypt_GPG::ERROR_MISSING_PASSPHRASE}.
+ *
+ * @var integer
+ */
+ private $_needPassphrase = 0;
+
+ /**
+ * The input source
+ *
+ * This is data to send to GPG. Either a string or a stream resource.
+ *
+ * @var string|resource
+ * @see Crypt_GPG_Engine::setInput()
+ */
+ private $_input = null;
+
+ /**
+ * The extra message input source
+ *
+ * Either a string or a stream resource.
+ *
+ * @var string|resource
+ * @see Crypt_GPG_Engine::setMessage()
+ */
+ private $_message = null;
+
+ /**
+ * The output location
+ *
+ * This is where the output from GPG is sent. Either a string or a stream
+ * resource.
+ *
+ * @var string|resource
+ * @see Crypt_GPG_Engine::setOutput()
+ */
+ private $_output = '';
+
+ /**
+ * The GPG operation to execute
+ *
+ * @var string
+ * @see Crypt_GPG_Engine::setOperation()
+ */
+ private $_operation;
+
+ /**
+ * Arguments for the current operation
+ *
+ * @var array
+ * @see Crypt_GPG_Engine::setOperation()
+ */
+ private $_arguments = array();
+
+ /**
+ * The version number of the GPG binary
+ *
+ * @var string
+ * @see Crypt_GPG_Engine::getVersion()
+ */
+ private $_version = '';
+
+ /**
+ * Cached value indicating whether or not mbstring function overloading is
+ * on for strlen
+ *
+ * This is cached for optimal performance inside the I/O loop.
+ *
+ * @var boolean
+ * @see Crypt_GPG_Engine::_byteLength()
+ * @see Crypt_GPG_Engine::_byteSubstring()
+ */
+ private static $_mbStringOverload = null;
+
+ // }}}
+ // {{{ __construct()
+
+ /**
+ * Creates a new GPG engine
+ *
+ * Available options are:
+ *
+ * - <kbd>string homedir</kbd> - the directory where the GPG
+ * keyring files are stored. If not
+ * specified, Crypt_GPG uses the
+ * default of <kbd>~/.gnupg</kbd>.
+ * - <kbd>string publicKeyring</kbd> - the file path of the public
+ * keyring. Use this if the public
+ * keyring is not in the homedir, or
+ * if the keyring is in a directory
+ * not writable by the process
+ * invoking GPG (like Apache). Then
+ * you can specify the path to the
+ * keyring with this option
+ * (/foo/bar/pubring.gpg), and specify
+ * a writable directory (like /tmp)
+ * using the <i>homedir</i> option.
+ * - <kbd>string privateKeyring</kbd> - the file path of the private
+ * keyring. Use this if the private
+ * keyring is not in the homedir, or
+ * if the keyring is in a directory
+ * not writable by the process
+ * invoking GPG (like Apache). Then
+ * you can specify the path to the
+ * keyring with this option
+ * (/foo/bar/secring.gpg), and specify
+ * a writable directory (like /tmp)
+ * using the <i>homedir</i> option.
+ * - <kbd>string trustDb</kbd> - the file path of the web-of-trust
+ * database. Use this if the trust
+ * database is not in the homedir, or
+ * if the database is in a directory
+ * not writable by the process
+ * invoking GPG (like Apache). Then
+ * you can specify the path to the
+ * trust database with this option
+ * (/foo/bar/trustdb.gpg), and specify
+ * a writable directory (like /tmp)
+ * using the <i>homedir</i> option.
+ * - <kbd>string binary</kbd> - the location of the GPG binary. If
+ * not specified, the driver attempts
+ * to auto-detect the GPG binary
+ * location using a list of known
+ * default locations for the current
+ * operating system. The option
+ * <kbd>gpgBinary</kbd> is a
+ * deprecated alias for this option.
+ * - <kbd>boolean debug</kbd> - whether or not to use debug mode.
+ * When debug mode is on, all
+ * communication to and from the GPG
+ * subprocess is logged. This can be
+ * useful to diagnose errors when
+ * using Crypt_GPG.
+ *
+ * @param array $options optional. An array of options used to create the
+ * GPG object. All options are optional and are
+ * represented as key-value pairs.
+ *
+ * @throws Crypt_GPG_FileException if the <kbd>homedir</kbd> does not exist
+ * and cannot be created. This can happen if <kbd>homedir</kbd> is
+ * not specified, Crypt_GPG is run as the web user, and the web
+ * user has no home directory. This exception is also thrown if any
+ * of the options <kbd>publicKeyring</kbd>,
+ * <kbd>privateKeyring</kbd> or <kbd>trustDb</kbd> options are
+ * specified but the files do not exist or are are not readable.
+ * This can happen if the user running the Crypt_GPG process (for
+ * example, the Apache user) does not have permission to read the
+ * files.
+ *
+ * @throws PEAR_Exception if the provided <kbd>binary</kbd> is invalid, or
+ * if no <kbd>binary</kbd> is provided and no suitable binary could
+ * be found.
+ */
+ public function __construct(array $options = array())
+ {
+ $this->_isDarwin = (strncmp(strtoupper(PHP_OS), 'DARWIN', 6) === 0);
+
+ // populate mbstring overloading cache if not set
+ if (self::$_mbStringOverload === null) {
+ self::$_mbStringOverload = (extension_loaded('mbstring')
+ && (ini_get('mbstring.func_overload') & 0x02) === 0x02);
+ }
+
+ // get homedir
+ if (array_key_exists('homedir', $options)) {
+ $this->_homedir = (string)$options['homedir'];
+ } else {
+ // note: this requires the package OS dep exclude 'windows'
+ $info = posix_getpwuid(posix_getuid());
+ $this->_homedir = $info['dir'].'/.gnupg';
+ }
+
+ // attempt to create homedir if it does not exist
+ if (!is_dir($this->_homedir)) {
+ if (@mkdir($this->_homedir, 0777, true)) {
+ // Set permissions on homedir. Parent directories are created
+ // with 0777, homedir is set to 0700.
+ chmod($this->_homedir, 0700);
+ } else {
+ throw new Crypt_GPG_FileException('The \'homedir\' "' .
+ $this->_homedir . '" is not readable or does not exist '.
+ 'and cannot be created. This can happen if \'homedir\' '.
+ 'is not specified in the Crypt_GPG options, Crypt_GPG is '.
+ 'run as the web user, and the web user has no home '.
+ 'directory.',
+ 0, $this->_homedir);
+ }
+ }
+
+ // get binary
+ if (array_key_exists('binary', $options)) {
+ $this->_binary = (string)$options['binary'];
+ } elseif (array_key_exists('gpgBinary', $options)) {
+ // deprecated alias
+ $this->_binary = (string)$options['gpgBinary'];
+ } else {
+ $this->_binary = $this->_getBinary();
+ }
+
+ if ($this->_binary == '' || !is_executable($this->_binary)) {
+ throw new PEAR_Exception('GPG binary not found. If you are sure '.
+ 'the GPG binary is installed, please specify the location of '.
+ 'the GPG binary using the \'binary\' driver option.');
+ }
+
+ /*
+ * Note:
+ *
+ * Normally, GnuPG expects keyrings to be in the homedir and expects
+ * to be able to write temporary files in the homedir. Sometimes,
+ * keyrings are not in the homedir, or location of the keyrings does
+ * not allow writing temporary files. In this case, the <i>homedir</i>
+ * option by itself is not enough to specify the keyrings because GnuPG
+ * can not write required temporary files. Additional options are
+ * provided so you can specify the location of the keyrings separately
+ * from the homedir.
+ */
+
+ // get public keyring
+ if (array_key_exists('publicKeyring', $options)) {
+ $this->_publicKeyring = (string)$options['publicKeyring'];
+ if (!is_readable($this->_publicKeyring)) {
+ throw new Crypt_GPG_FileException('The \'publicKeyring\' "' .
+ $this->_publicKeyring . '" does not exist or is ' .
+ 'not readable. Check the location and ensure the file ' .
+ 'permissions are correct.', 0, $this->_publicKeyring);
+ }
+ }
+
+ // get private keyring
+ if (array_key_exists('privateKeyring', $options)) {
+ $this->_privateKeyring = (string)$options['privateKeyring'];
+ if (!is_readable($this->_privateKeyring)) {
+ throw new Crypt_GPG_FileException('The \'privateKeyring\' "' .
+ $this->_privateKeyring . '" does not exist or is ' .
+ 'not readable. Check the location and ensure the file ' .
+ 'permissions are correct.', 0, $this->_privateKeyring);
+ }
+ }
+
+ // get trust database
+ if (array_key_exists('trustDb', $options)) {
+ $this->_trustDb = (string)$options['trustDb'];
+ if (!is_readable($this->_trustDb)) {
+ throw new Crypt_GPG_FileException('The \'trustDb\' "' .
+ $this->_trustDb . '" does not exist or is not readable. ' .
+ 'Check the location and ensure the file permissions are ' .
+ 'correct.', 0, $this->_trustDb);
+ }
+ }
+
+ if (array_key_exists('debug', $options)) {
+ $this->_debug = (boolean)$options['debug'];
+ }
+ }
+
+ // }}}
+ // {{{ __destruct()
+
+ /**
+ * Closes open GPG subprocesses when this object is destroyed
+ *
+ * Subprocesses should never be left open by this class unless there is
+ * an unknown error and unexpected script termination occurs.
+ */
+ public function __destruct()
+ {
+ $this->_closeSubprocess();
+ }
+
+ // }}}
+ // {{{ addErrorHandler()
+
+ /**
+ * Adds an error handler method
+ *
+ * The method is run every time a new error line is received from the GPG
+ * subprocess. The handler method must accept the error line to be handled
+ * as its first parameter.
+ *
+ * @param callback $callback the callback method to use.
+ * @param array $args optional. Additional arguments to pass as
+ * parameters to the callback method.
+ *
+ * @return void
+ */
+ public function addErrorHandler($callback, array $args = array())
+ {
+ $this->_errorHandlers[] = array(
+ 'callback' => $callback,
+ 'args' => $args
+ );
+ }
+
+ // }}}
+ // {{{ addStatusHandler()
+
+ /**
+ * Adds a status handler method
+ *
+ * The method is run every time a new status line is received from the
+ * GPG subprocess. The handler method must accept the status line to be
+ * handled as its first parameter.
+ *
+ * @param callback $callback the callback method to use.
+ * @param array $args optional. Additional arguments to pass as
+ * parameters to the callback method.
+ *
+ * @return void
+ */
+ public function addStatusHandler($callback, array $args = array())
+ {
+ $this->_statusHandlers[] = array(
+ 'callback' => $callback,
+ 'args' => $args
+ );
+ }
+
+ // }}}
+ // {{{ sendCommand()
+
+ /**
+ * Sends a command to the GPG subprocess over the command file-descriptor
+ * pipe
+ *
+ * @param string $command the command to send.
+ *
+ * @return void
+ *
+ * @sensitive $command
+ */
+ public function sendCommand($command)
+ {
+ if (array_key_exists(self::FD_COMMAND, $this->_openPipes)) {
+ $this->_commandBuffer .= $command . PHP_EOL;
+ }
+ }
+
+ // }}}
+ // {{{ reset()
+
+ /**
+ * Resets the GPG engine, preparing it for a new operation
+ *
+ * @return void
+ *
+ * @see Crypt_GPG_Engine::run()
+ * @see Crypt_GPG_Engine::setOperation()
+ */
+ public function reset()
+ {
+ $this->_operation = '';
+ $this->_arguments = array();
+ $this->_input = null;
+ $this->_message = null;
+ $this->_output = '';
+ $this->_errorCode = Crypt_GPG::ERROR_NONE;
+ $this->_needPassphrase = 0;
+ $this->_commandBuffer = '';
+
+ $this->_statusHandlers = array();
+ $this->_errorHandlers = array();
+
+ $this->addStatusHandler(array($this, '_handleErrorStatus'));
+ $this->addErrorHandler(array($this, '_handleErrorError'));
+
+ if ($this->_debug) {
+ $this->addStatusHandler(array($this, '_handleDebugStatus'));
+ $this->addErrorHandler(array($this, '_handleDebugError'));
+ }
+ }
+
+ // }}}
+ // {{{ run()
+
+ /**
+ * Runs the current GPG operation
+ *
+ * This creates and manages the GPG subprocess.
+ *
+ * The operation must be set with {@link Crypt_GPG_Engine::setOperation()}
+ * before this method is called.
+ *
+ * @return void
+ *
+ * @throws Crypt_GPG_InvalidOperationException if no operation is specified.
+ *
+ * @see Crypt_GPG_Engine::reset()
+ * @see Crypt_GPG_Engine::setOperation()
+ */
+ public function run()
+ {
+ if ($this->_operation === '') {
+ throw new Crypt_GPG_InvalidOperationException('No GPG operation ' .
+ 'specified. Use Crypt_GPG_Engine::setOperation() before ' .
+ 'calling Crypt_GPG_Engine::run().');
+ }
+
+ $this->_openSubprocess();
+ $this->_process();
+ $this->_closeSubprocess();
+ }
+
+ // }}}
+ // {{{ getErrorCode()
+
+ /**
+ * Gets the error code of the last executed operation
+ *
+ * This value is only meaningful after {@link Crypt_GPG_Engine::run()} has
+ * been executed.
+ *
+ * @return integer the error code of the last executed operation.
+ */
+ public function getErrorCode()
+ {
+ return $this->_errorCode;
+ }
+
+ // }}}
+ // {{{ getErrorFilename()
+
+ /**
+ * Gets the file related to the error code of the last executed operation
+ *
+ * This value is only meaningful after {@link Crypt_GPG_Engine::run()} has
+ * been executed. If there is no file related to the error, an empty string
+ * is returned.
+ *
+ * @return string the file related to the error code of the last executed
+ * operation.
+ */
+ public function getErrorFilename()
+ {
+ return $this->_errorFilename;
+ }
+
+ // }}}
+ // {{{ getErrorKeyId()
+
+ /**
+ * Gets the key id related to the error code of the last executed operation
+ *
+ * This value is only meaningful after {@link Crypt_GPG_Engine::run()} has
+ * been executed. If there is no key id related to the error, an empty
+ * string is returned.
+ *
+ * @return string the key id related to the error code of the last executed
+ * operation.
+ */
+ public function getErrorKeyId()
+ {
+ return $this->_errorKeyId;
+ }
+
+ // }}}
+ // {{{ setInput()
+
+ /**
+ * Sets the input source for the current GPG operation
+ *
+ * @param string|resource &$input either a reference to the string
+ * containing the input data or an open
+ * stream resource containing the input
+ * data.
+ *
+ * @return void
+ */
+ public function setInput(&$input)
+ {
+ $this->_input =& $input;
+ }
+
+ // }}}
+ // {{{ setMessage()
+
+ /**
+ * Sets the message source for the current GPG operation
+ *
+ * Detached signature data should be specified here.
+ *
+ * @param string|resource &$message either a reference to the string
+ * containing the message data or an open
+ * stream resource containing the message
+ * data.
+ *
+ * @return void
+ */
+ public function setMessage(&$message)
+ {
+ $this->_message =& $message;
+ }
+
+ // }}}
+ // {{{ setOutput()
+
+ /**
+ * Sets the output destination for the current GPG operation
+ *
+ * @param string|resource &$output either a reference to the string in
+ * which to store GPG output or an open
+ * stream resource to which the output data
+ * should be written.
+ *
+ * @return void
+ */
+ public function setOutput(&$output)
+ {
+ $this->_output =& $output;
+ }
+
+ // }}}
+ // {{{ setOperation()
+
+ /**
+ * Sets the operation to perform
+ *
+ * @param string $operation the operation to perform. This should be one
+ * of GPG's operations. For example,
+ * <kbd>--encrypt</kbd>, <kbd>--decrypt</kbd>,
+ * <kbd>--sign</kbd>, etc.
+ * @param array $arguments optional. Additional arguments for the GPG
+ * subprocess. See the GPG manual for specific
+ * values.
+ *
+ * @return void
+ *
+ * @see Crypt_GPG_Engine::reset()
+ * @see Crypt_GPG_Engine::run()
+ */
+ public function setOperation($operation, array $arguments = array())
+ {
+ $this->_operation = $operation;
+ $this->_arguments = $arguments;
+ }
+
+ // }}}
+ // {{{ getVersion()
+
+ /**
+ * Gets the version of the GnuPG binary
+ *
+ * @return string a version number string containing the version of GnuPG
+ * being used. This value is suitable to use with PHP's
+ * version_compare() function.
+ *
+ * @throws Crypt_GPG_Exception if an unknown or unexpected error occurs.
+ * Use the <kbd>debug</kbd> option and file a bug report if these
+ * exceptions occur.
+ *
+ * @throws Crypt_GPG_UnsupportedException if the provided binary is not
+ * GnuPG or if the GnuPG version is less than 1.0.2.
+ */
+ public function getVersion()
+ {
+ if ($this->_version == '') {
+
+ $options = array(
+ 'homedir' => $this->_homedir,
+ 'binary' => $this->_binary,
+ 'debug' => $this->_debug
+ );
+
+ $engine = new self($options);
+ $info = '';
+
+ // Set a garbage version so we do not end up looking up the version
+ // recursively.
+ $engine->_version = '1.0.0';
+
+ $engine->reset();
+ $engine->setOutput($info);
+ $engine->setOperation('--version');
+ $engine->run();
+
+ $code = $this->getErrorCode();
+
+ if ($code !== Crypt_GPG::ERROR_NONE) {
+ throw new Crypt_GPG_Exception(
+ 'Unknown error getting GnuPG version information. Please ' .
+ 'use the \'debug\' option when creating the Crypt_GPG ' .
+ 'object, and file a bug report at ' . Crypt_GPG::BUG_URI,
+ $code);
+ }
+
+ $matches = array();
+ $expression = '/gpg \(GnuPG\) (\S+)/';
+
+ if (preg_match($expression, $info, $matches) === 1) {
+ $this->_version = $matches[1];
+ } else {
+ throw new Crypt_GPG_Exception(
+ 'No GnuPG version information provided by the binary "' .
+ $this->_binary . '". Are you sure it is GnuPG?');
+ }
+
+ if (version_compare($this->_version, self::MIN_VERSION, 'lt')) {
+ throw new Crypt_GPG_Exception(
+ 'The version of GnuPG being used (' . $this->_version .
+ ') is not supported by Crypt_GPG. The minimum version ' .
+ 'required by Crypt_GPG is ' . self::MIN_VERSION);
+ }
+ }
+
+
+ return $this->_version;
+ }
+
+ // }}}
+ // {{{ _handleErrorStatus()
+
+ /**
+ * Handles error values in the status output from GPG
+ *
+ * This method is responsible for setting the
+ * {@link Crypt_GPG_Engine::$_errorCode}. See <b>doc/DETAILS</b> in the
+ * {@link http://www.gnupg.org/download/ GPG distribution} for detailed
+ * information on GPG's status output.
+ *
+ * @param string $line the status line to handle.
+ *
+ * @return void
+ */
+ private function _handleErrorStatus($line)
+ {
+ $tokens = explode(' ', $line);
+ switch ($tokens[0]) {
+ case 'BAD_PASSPHRASE':
+ $this->_errorCode = Crypt_GPG::ERROR_BAD_PASSPHRASE;
+ break;
+
+ case 'MISSING_PASSPHRASE':
+ $this->_errorCode = Crypt_GPG::ERROR_MISSING_PASSPHRASE;
+ break;
+
+ case 'NODATA':
+ $this->_errorCode = Crypt_GPG::ERROR_NO_DATA;
+ break;
+
+ case 'DELETE_PROBLEM':
+ if ($tokens[1] == '1') {
+ $this->_errorCode = Crypt_GPG::ERROR_KEY_NOT_FOUND;
+ break;
+ } elseif ($tokens[1] == '2') {
+ $this->_errorCode = Crypt_GPG::ERROR_DELETE_PRIVATE_KEY;
+ break;
+ }
+ break;
+
+ case 'IMPORT_RES':
+ if ($tokens[12] > 0) {
+ $this->_errorCode = Crypt_GPG::ERROR_DUPLICATE_KEY;
+ }
+ break;
+
+ case 'NO_PUBKEY':
+ case 'NO_SECKEY':
+ $this->_errorKeyId = $tokens[1];
+ $this->_errorCode = Crypt_GPG::ERROR_KEY_NOT_FOUND;
+ break;
+
+ case 'NEED_PASSPHRASE':
+ $this->_needPassphrase++;
+ break;
+
+ case 'GOOD_PASSPHRASE':
+ $this->_needPassphrase--;
+ break;
+
+ case 'EXPSIG':
+ case 'EXPKEYSIG':
+ case 'REVKEYSIG':
+ case 'BADSIG':
+ $this->_errorCode = Crypt_GPG::ERROR_BAD_SIGNATURE;
+ break;
+
+ }
+ }
+
+ // }}}
+ // {{{ _handleErrorError()
+
+ /**
+ * Handles error values in the error output from GPG
+ *
+ * This method is responsible for setting the
+ * {@link Crypt_GPG_Engine::$_errorCode}.
+ *
+ * @param string $line the error line to handle.
+ *
+ * @return void
+ */
+ private function _handleErrorError($line)
+ {
+ if ($this->_errorCode === Crypt_GPG::ERROR_NONE) {
+ $pattern = '/no valid OpenPGP data found/';
+ if (preg_match($pattern, $line) === 1) {
+ $this->_errorCode = Crypt_GPG::ERROR_NO_DATA;
+ }
+ }
+
+ if ($this->_errorCode === Crypt_GPG::ERROR_NONE) {
+ $pattern = '/No secret key|secret key not available/';
+ if (preg_match($pattern, $line) === 1) {
+ $this->_errorCode = Crypt_GPG::ERROR_KEY_NOT_FOUND;
+ }
+ }
+
+ if ($this->_errorCode === Crypt_GPG::ERROR_NONE) {
+ $pattern = '/No public key|public key not found/';
+ if (preg_match($pattern, $line) === 1) {
+ $this->_errorCode = Crypt_GPG::ERROR_KEY_NOT_FOUND;
+ }
+ }
+
+ if ($this->_errorCode === Crypt_GPG::ERROR_NONE) {
+ $matches = array();
+ $pattern = '/can\'t (?:access|open) `(.*?)\'/';
+ if (preg_match($pattern, $line, $matches) === 1) {
+ $this->_errorFilename = $matches[1];
+ $this->_errorCode = Crypt_GPG::ERROR_FILE_PERMISSIONS;
+ }
+ }
+ }
+
+ // }}}
+ // {{{ _handleDebugStatus()
+
+ /**
+ * Displays debug output for status lines
+ *
+ * @param string $line the status line to handle.
+ *
+ * @return void
+ */
+ private function _handleDebugStatus($line)
+ {
+ $this->_debug('STATUS: ' . $line);
+ }
+
+ // }}}
+ // {{{ _handleDebugError()
+
+ /**
+ * Displays debug output for error lines
+ *
+ * @param string $line the error line to handle.
+ *
+ * @return void
+ */
+ private function _handleDebugError($line)
+ {
+ $this->_debug('ERROR: ' . $line);
+ }
+
+ // }}}
+ // {{{ _process()
+
+ /**
+ * Performs internal streaming operations for the subprocess using either
+ * strings or streams as input / output points
+ *
+ * This is the main I/O loop for streaming to and from the GPG subprocess.
+ *
+ * The implementation of this method is verbose mainly for performance
+ * reasons. Adding streams to a lookup array and looping the array inside
+ * the main I/O loop would be siginficantly slower for large streams.
+ *
+ * @return void
+ *
+ * @throws Crypt_GPG_Exception if there is an error selecting streams for
+ * reading or writing. If this occurs, please file a bug report at
+ * http://pear.php.net/bugs/report.php?package=Crypt_GPG.
+ */
+ private function _process()
+ {
+ $this->_debug('BEGIN PROCESSING');
+
+ $this->_commandBuffer = ''; // buffers input to GPG
+ $messageBuffer = ''; // buffers input to GPG
+ $inputBuffer = ''; // buffers input to GPG
+ $outputBuffer = ''; // buffers output from GPG
+ $statusBuffer = ''; // buffers output from GPG
+ $errorBuffer = ''; // buffers output from GPG
+ $inputComplete = false; // input stream is completely buffered
+ $messageComplete = false; // message stream is completely buffered
+
+ if (is_string($this->_input)) {
+ $inputBuffer = $this->_input;
+ $inputComplete = true;
+ }
+
+ if (is_string($this->_message)) {
+ $messageBuffer = $this->_message;
+ $messageComplete = true;
+ }
+
+ if (is_string($this->_output)) {
+ $outputBuffer =& $this->_output;
+ }
+
+ // convenience variables
+ $fdInput = $this->_pipes[self::FD_INPUT];
+ $fdOutput = $this->_pipes[self::FD_OUTPUT];
+ $fdError = $this->_pipes[self::FD_ERROR];
+ $fdStatus = $this->_pipes[self::FD_STATUS];
+ $fdCommand = $this->_pipes[self::FD_COMMAND];
+ $fdMessage = $this->_pipes[self::FD_MESSAGE];
+
+ while (true) {
+
+ $inputStreams = array();
+ $outputStreams = array();
+ $exceptionStreams = array();
+
+ // set up input streams
+ if (is_resource($this->_input) && !$inputComplete) {
+ if (feof($this->_input)) {
+ $inputComplete = true;
+ } else {
+ $inputStreams[] = $this->_input;
+ }
+ }
+
+ // close GPG input pipe if there is no more data
+ if ($inputBuffer == '' && $inputComplete) {
+ $this->_debug('=> closing GPG input pipe');
+ $this->_closePipe(self::FD_INPUT);
+ }
+
+ if (is_resource($this->_message) && !$messageComplete) {
+ if (feof($this->_message)) {
+ $messageComplete = true;
+ } else {
+ $inputStreams[] = $this->_message;
+ }
+ }
+
+ // close GPG message pipe if there is no more data
+ if ($messageBuffer == '' && $messageComplete) {
+ $this->_debug('=> closing GPG message pipe');
+ $this->_closePipe(self::FD_MESSAGE);
+ }
+
+ if (!feof($fdOutput)) {
+ $inputStreams[] = $fdOutput;
+ }
+
+ if (!feof($fdStatus)) {
+ $inputStreams[] = $fdStatus;
+ }
+
+ if (!feof($fdError)) {
+ $inputStreams[] = $fdError;
+ }
+
+ // set up output streams
+ if ($outputBuffer != '' && is_resource($this->_output)) {
+ $outputStreams[] = $this->_output;
+ }
+
+ if ($this->_commandBuffer != '') {
+ $outputStreams[] = $fdCommand;
+ }
+
+ if ($messageBuffer != '') {
+ $outputStreams[] = $fdMessage;
+ }
+
+ if ($inputBuffer != '') {
+ $outputStreams[] = $fdInput;
+ }
+
+ // no streams left to read or write, we're all done
+ if (count($inputStreams) === 0 && count($outputStreams) === 0) {
+ break;
+ }
+
+ $this->_debug('selecting streams');
+
+ $ready = stream_select(
+ $inputStreams,
+ $outputStreams,
+ $exceptionStreams,
+ null
+ );
+
+ $this->_debug('=> got ' . $ready);
+
+ if ($ready === false) {
+ throw new Crypt_GPG_Exception(
+ 'Error selecting stream for communication with GPG ' .
+ 'subprocess. Please file a bug report at: ' .
+ 'http://pear.php.net/bugs/report.php?package=Crypt_GPG');
+ }
+
+ if ($ready === 0) {
+ throw new Crypt_GPG_Exception(
+ 'stream_select() returned 0. This can not happen! Please ' .
+ 'file a bug report at: ' .
+ 'http://pear.php.net/bugs/report.php?package=Crypt_GPG');
+ }
+
+ // write input (to GPG)
+ if (in_array($fdInput, $outputStreams)) {
+ $this->_debug('GPG is ready for input');
+
+ $chunk = self::_byteSubstring(
+ $inputBuffer,
+ 0,
+ self::CHUNK_SIZE
+ );
+
+ $length = self::_byteLength($chunk);
+
+ $this->_debug(
+ '=> about to write ' . $length . ' bytes to GPG input'
+ );
+
+ $length = fwrite($fdInput, $chunk, $length);
+
+ $this->_debug('=> wrote ' . $length . ' bytes');
+
+ $inputBuffer = self::_byteSubstring(
+ $inputBuffer,
+ $length
+ );
+ }
+
+ // read input (from PHP stream)
+ if (in_array($this->_input, $inputStreams)) {
+ $this->_debug('input stream is ready for reading');
+ $this->_debug(
+ '=> about to read ' . self::CHUNK_SIZE .
+ ' bytes from input stream'
+ );
+
+ $chunk = fread($this->_input, self::CHUNK_SIZE);
+ $length = self::_byteLength($chunk);
+ $inputBuffer .= $chunk;
+
+ $this->_debug('=> read ' . $length . ' bytes');
+ }
+
+ // write message (to GPG)
+ if (in_array($fdMessage, $outputStreams)) {
+ $this->_debug('GPG is ready for message data');
+
+ $chunk = self::_byteSubstring(
+ $messageBuffer,
+ 0,
+ self::CHUNK_SIZE
+ );
+
+ $length = self::_byteLength($chunk);
+
+ $this->_debug(
+ '=> about to write ' . $length . ' bytes to GPG message'
+ );
+
+ $length = fwrite($fdMessage, $chunk, $length);
+ $this->_debug('=> wrote ' . $length . ' bytes');
+
+ $messageBuffer = self::_byteSubstring($messageBuffer, $length);
+ }
+
+ // read message (from PHP stream)
+ if (in_array($this->_message, $inputStreams)) {
+ $this->_debug('message stream is ready for reading');
+ $this->_debug(
+ '=> about to read ' . self::CHUNK_SIZE .
+ ' bytes from message stream'
+ );
+
+ $chunk = fread($this->_message, self::CHUNK_SIZE);
+ $length = self::_byteLength($chunk);
+ $messageBuffer .= $chunk;
+
+ $this->_debug('=> read ' . $length . ' bytes');
+ }
+
+ // read output (from GPG)
+ if (in_array($fdOutput, $inputStreams)) {
+ $this->_debug('GPG output stream ready for reading');
+ $this->_debug(
+ '=> about to read ' . self::CHUNK_SIZE .
+ ' bytes from GPG output'
+ );
+
+ $chunk = fread($fdOutput, self::CHUNK_SIZE);
+ $length = self::_byteLength($chunk);
+ $outputBuffer .= $chunk;
+
+ $this->_debug('=> read ' . $length . ' bytes');
+ }
+
+ // write output (to PHP stream)
+ if (in_array($this->_output, $outputStreams)) {
+ $this->_debug('output stream is ready for data');
+
+ $chunk = self::_byteSubstring(
+ $outputBuffer,
+ 0,
+ self::CHUNK_SIZE
+ );
+
+ $length = self::_byteLength($chunk);
+
+ $this->_debug(
+ '=> about to write ' . $length . ' bytes to output stream'
+ );
+
+ $length = fwrite($this->_output, $chunk, $length);
+
+ $this->_debug('=> wrote ' . $length . ' bytes');
+
+ $outputBuffer = self::_byteSubstring($outputBuffer, $length);
+ }
+
+ // read error (from GPG)
+ if (in_array($fdError, $inputStreams)) {
+ $this->_debug('GPG error stream ready for reading');
+ $this->_debug(
+ '=> about to read ' . self::CHUNK_SIZE .
+ ' bytes from GPG error'
+ );
+
+ $chunk = fread($fdError, self::CHUNK_SIZE);
+ $length = self::_byteLength($chunk);
+ $errorBuffer .= $chunk;
+
+ $this->_debug('=> read ' . $length . ' bytes');
+
+ // pass lines to error handlers
+ while (($pos = strpos($errorBuffer, PHP_EOL)) !== false) {
+ $line = self::_byteSubstring($errorBuffer, 0, $pos);
+ foreach ($this->_errorHandlers as $handler) {
+ array_unshift($handler['args'], $line);
+ call_user_func_array(
+ $handler['callback'],
+ $handler['args']
+ );
+
+ array_shift($handler['args']);
+ }
+ $errorBuffer = self::_byteSubString(
+ $errorBuffer,
+ $pos + self::_byteLength(PHP_EOL)
+ );
+ }
+ }
+
+ // read status (from GPG)
+ if (in_array($fdStatus, $inputStreams)) {
+ $this->_debug('GPG status stream ready for reading');
+ $this->_debug(
+ '=> about to read ' . self::CHUNK_SIZE .
+ ' bytes from GPG status'
+ );
+
+ $chunk = fread($fdStatus, self::CHUNK_SIZE);
+ $length = self::_byteLength($chunk);
+ $statusBuffer .= $chunk;
+
+ $this->_debug('=> read ' . $length . ' bytes');
+
+ // pass lines to status handlers
+ while (($pos = strpos($statusBuffer, PHP_EOL)) !== false) {
+ $line = self::_byteSubstring($statusBuffer, 0, $pos);
+ // only pass lines beginning with magic prefix
+ if (self::_byteSubstring($line, 0, 9) == '[GNUPG:] ') {
+ $line = self::_byteSubstring($line, 9);
+ foreach ($this->_statusHandlers as $handler) {
+ array_unshift($handler['args'], $line);
+ call_user_func_array(
+ $handler['callback'],
+ $handler['args']
+ );
+
+ array_shift($handler['args']);
+ }
+ }
+ $statusBuffer = self::_byteSubString(
+ $statusBuffer,
+ $pos + self::_byteLength(PHP_EOL)
+ );
+ }
+ }
+
+ // write command (to GPG)
+ if (in_array($fdCommand, $outputStreams)) {
+ $this->_debug('GPG is ready for command data');
+
+ // send commands
+ $chunk = self::_byteSubstring(
+ $this->_commandBuffer,
+ 0,
+ self::CHUNK_SIZE
+ );
+
+ $length = self::_byteLength($chunk);
+
+ $this->_debug(
+ '=> about to write ' . $length . ' bytes to GPG command'
+ );
+
+ $length = fwrite($fdCommand, $chunk, $length);
+
+ $this->_debug('=> wrote ' . $length);
+
+ $this->_commandBuffer = self::_byteSubstring(
+ $this->_commandBuffer,
+ $length
+ );
+ }
+
+ } // end loop while streams are open
+
+ $this->_debug('END PROCESSING');
+ }
+
+ // }}}
+ // {{{ _openSubprocess()
+
+ /**
+ * Opens an internal GPG subprocess for the current operation
+ *
+ * Opens a GPG subprocess, then connects the subprocess to some pipes. Sets
+ * the private class property {@link Crypt_GPG_Engine::$_process} to
+ * the new subprocess.
+ *
+ * @return void
+ *
+ * @throws Crypt_GPG_OpenSubprocessException if the subprocess could not be
+ * opened.
+ *
+ * @see Crypt_GPG_Engine::setOperation()
+ * @see Crypt_GPG_Engine::_closeSubprocess()
+ * @see Crypt_GPG_Engine::$_process
+ */
+ private function _openSubprocess()
+ {
+ $version = $this->getVersion();
+
+ $env = $_ENV;
+
+ // Newer versions of GnuPG return localized results. Crypt_GPG only
+ // works with English, so set the locale to 'C' for the subprocess.
+ $env['LC_ALL'] = 'C';
+
+ $commandLine = $this->_binary;
+
+ $defaultArguments = array(
+ '--status-fd ' . escapeshellarg(self::FD_STATUS),
+ '--command-fd ' . escapeshellarg(self::FD_COMMAND),
+ '--no-secmem-warning',
+ '--no-tty',
+ '--no-default-keyring', // ignored if keying files are not specified
+ '--no-options' // prevent creation of ~/.gnupg directory
+ );
+
+ if (version_compare($version, '1.0.7', 'ge')) {
+ if (version_compare($version, '2.0.0', 'lt')) {
+ $defaultArguments[] = '--no-use-agent';
+ }
+ $defaultArguments[] = '--no-permission-warning';
+ }
+
+ if (version_compare($version, '1.4.2', 'ge')) {
+ $defaultArguments[] = '--exit-on-status-write-error';
+ }
+
+ if (version_compare($version, '1.3.2', 'ge')) {
+ $defaultArguments[] = '--trust-model always';
+ } else {
+ $defaultArguments[] = '--always-trust';
+ }
+
+ $arguments = array_merge($defaultArguments, $this->_arguments);
+
+ if ($this->_homedir) {
+ $arguments[] = '--homedir ' . escapeshellarg($this->_homedir);
+
+ // the random seed file makes subsequent actions faster so only
+ // disable it if we have to.
+ if (!is_writeable($this->_homedir)) {
+ $arguments[] = '--no-random-seed-file';
+ }
+ }
+
+ if ($this->_publicKeyring) {
+ $arguments[] = '--keyring ' . escapeshellarg($this->_publicKeyring);
+ }
+
+ if ($this->_privateKeyring) {
+ $arguments[] = '--secret-keyring ' .
+ escapeshellarg($this->_privateKeyring);
+ }
+
+ if ($this->_trustDb) {
+ $arguments[] = '--trustdb-name ' . escapeshellarg($this->_trustDb);
+ }
+
+ $commandLine .= ' ' . implode(' ', $arguments) . ' ' .
+ $this->_operation;
+
+ // Binary operations will not work on Windows with PHP < 5.2.6. This is
+ // in case stream_select() ever works on Windows.
+ $rb = (version_compare(PHP_VERSION, '5.2.6') < 0) ? 'r' : 'rb';
+ $wb = (version_compare(PHP_VERSION, '5.2.6') < 0) ? 'w' : 'wb';
+
+ $descriptorSpec = array(
+ self::FD_INPUT => array('pipe', $rb), // stdin
+ self::FD_OUTPUT => array('pipe', $wb), // stdout
+ self::FD_ERROR => array('pipe', $wb), // stderr
+ self::FD_STATUS => array('pipe', $wb), // status
+ self::FD_COMMAND => array('pipe', $rb), // command
+ self::FD_MESSAGE => array('pipe', $rb) // message
+ );
+
+ $this->_debug('OPENING SUBPROCESS WITH THE FOLLOWING COMMAND:');
+ $this->_debug($commandLine);
+
+ $this->_process = proc_open(
+ $commandLine,
+ $descriptorSpec,
+ $this->_pipes,
+ null,
+ $env,
+ array('binary_pipes' => true)
+ );
+
+ if (!is_resource($this->_process)) {
+ throw new Crypt_GPG_OpenSubprocessException(
+ 'Unable to open GPG subprocess.', 0, $commandLine);
+ }
+
+ $this->_openPipes = $this->_pipes;
+ $this->_errorCode = Crypt_GPG::ERROR_NONE;
+ }
+
+ // }}}
+ // {{{ _closeSubprocess()
+
+ /**
+ * Closes a the internal GPG subprocess
+ *
+ * Closes the internal GPG subprocess. Sets the private class property
+ * {@link Crypt_GPG_Engine::$_process} to null.
+ *
+ * @return void
+ *
+ * @see Crypt_GPG_Engine::_openSubprocess()
+ * @see Crypt_GPG_Engine::$_process
+ */
+ private function _closeSubprocess()
+ {
+ if (is_resource($this->_process)) {
+ $this->_debug('CLOSING SUBPROCESS');
+
+ // close remaining open pipes
+ foreach (array_keys($this->_openPipes) as $pipeNumber) {
+ $this->_closePipe($pipeNumber);
+ }
+
+ $exitCode = proc_close($this->_process);
+
+ if ($exitCode != 0) {
+ $this->_debug(
+ '=> subprocess returned an unexpected exit code: ' .
+ $exitCode
+ );
+
+ if ($this->_errorCode === Crypt_GPG::ERROR_NONE) {
+ if ($this->_needPassphrase > 0) {
+ $this->_errorCode = Crypt_GPG::ERROR_MISSING_PASSPHRASE;
+ } else {
+ $this->_errorCode = Crypt_GPG::ERROR_UNKNOWN;
+ }
+ }
+ }
+
+ $this->_process = null;
+ $this->_pipes = array();
+ }
+ }
+
+ // }}}
+ // {{{ _closePipe()
+
+ /**
+ * Closes an opened pipe used to communicate with the GPG subprocess
+ *
+ * If the pipe is already closed, it is ignored. If the pipe is open, it
+ * is flushed and then closed.
+ *
+ * @param integer $pipeNumber the file descriptor number of the pipe to
+ * close.
+ *
+ * @return void
+ */
+ private function _closePipe($pipeNumber)
+ {
+ $pipeNumber = intval($pipeNumber);
+ if (array_key_exists($pipeNumber, $this->_openPipes)) {
+ fflush($this->_openPipes[$pipeNumber]);
+ fclose($this->_openPipes[$pipeNumber]);
+ unset($this->_openPipes[$pipeNumber]);
+ }
+ }
+
+ // }}}
+ // {{{ _getBinary()
+
+ /**
+ * Gets the name of the GPG binary for the current operating system
+ *
+ * This method is called if the '<kbd>binary</kbd>' option is <i>not</i>
+ * specified when creating this driver.
+ *
+ * @return string the name of the GPG binary for the current operating
+ * system. If no suitable binary could be found, an empty
+ * string is returned.
+ */
+ private function _getBinary()
+ {
+ $binary = '';
+
+ if ($this->_isDarwin) {
+ $binaryFiles = array(
+ '/opt/local/bin/gpg', // MacPorts
+ '/usr/local/bin/gpg', // Mac GPG
+ '/sw/bin/gpg', // Fink
+ '/usr/bin/gpg'
+ );
+ } else {
+ $binaryFiles = array(
+ '/usr/bin/gpg',
+ '/usr/local/bin/gpg'
+ );
+ }
+
+ foreach ($binaryFiles as $binaryFile) {
+ if (is_executable($binaryFile)) {
+ $binary = $binaryFile;
+ break;
+ }
+ }
+
+ return $binary;
+ }
+
+ // }}}
+ // {{{ _debug()
+
+ /**
+ * Displays debug text if debugging is turned on
+ *
+ * Debugging text is prepended with a debug identifier and echoed to stdout.
+ *
+ * @param string $text the debugging text to display.
+ *
+ * @return void
+ */
+ private function _debug($text)
+ {
+ if ($this->_debug) {
+ if (array_key_exists('SHELL', $_ENV)) {
+ foreach (explode(PHP_EOL, $text) as $line) {
+ echo "Crypt_GPG DEBUG: ", $line, PHP_EOL;
+ }
+ } else {
+ // running on a web server, format debug output nicely
+ foreach (explode(PHP_EOL, $text) as $line) {
+ echo "Crypt_GPG DEBUG: <strong>", $line,
+ '</strong><br />', PHP_EOL;
+ }
+ }
+ }
+ }
+
+ // }}}
+ // {{{ _byteLength()
+
+ /**
+ * Gets the length of a string in bytes even if mbstring function
+ * overloading is turned on
+ *
+ * This is used for stream-based communication with the GPG subprocess.
+ *
+ * @param string $string the string for which to get the length.
+ *
+ * @return integer the length of the string in bytes.
+ *
+ * @see Crypt_GPG_Engine::$_mbStringOverload
+ */
+ private static function _byteLength($string)
+ {
+ if (self::$_mbStringOverload) {
+ return mb_strlen($string, '8bit');
+ }
+
+ return strlen((binary)$string);
+ }
+
+ // }}}
+ // {{{ _byteSubstring()
+
+ /**
+ * Gets the substring of a string in bytes even if mbstring function
+ * overloading is turned on
+ *
+ * This is used for stream-based communication with the GPG subprocess.
+ *
+ * @param string $string the input string.
+ * @param integer $start the starting point at which to get the substring.
+ * @param integer $length optional. The length of the substring.
+ *
+ * @return string the extracted part of the string. Unlike the default PHP
+ * <kbd>substr()</kbd> function, the returned value is
+ * always a string and never false.
+ *
+ * @see Crypt_GPG_Engine::$_mbStringOverload
+ */
+ private static function _byteSubstring($string, $start, $length = null)
+ {
+ if (self::$_mbStringOverload) {
+ if ($length === null) {
+ return mb_substr(
+ $string,
+ $start,
+ self::_byteLength($string) - $start, '8bit'
+ );
+ }
+
+ return mb_substr($string, $start, $length, '8bit');
+ }
+
+ if ($length === null) {
+ return (string)substr((binary)$string, $start);
+ }
+
+ return (string)substr((binary)$string, $start, $length);
+ }
+
+ // }}}
+}
+
+// }}}
+
+?>
diff --git a/plugins/enigma/lib/Crypt/GPG/Exceptions.php b/plugins/enigma/lib/Crypt/GPG/Exceptions.php
new file mode 100644
index 000000000..744acf5d4
--- /dev/null
+++ b/plugins/enigma/lib/Crypt/GPG/Exceptions.php
@@ -0,0 +1,473 @@
+<?php
+
+/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
+
+/**
+ * Various exception handling classes for Crypt_GPG
+ *
+ * Crypt_GPG provides an object oriented interface to GNU Privacy
+ * Guard (GPG). It requires the GPG executable to be on the system.
+ *
+ * This file contains various exception classes used by the Crypt_GPG package.
+ *
+ * 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 Nathan Fredrickson <nathan@silverorange.com>
+ * @author Michael Gauthier <mike@silverorange.com>
+ * @copyright 2005 silverorange
+ * @license http://www.gnu.org/copyleft/lesser.html LGPL License 2.1
+ * @version CVS: $Id: Exceptions.php 273745 2009-01-18 05:24:25Z gauthierm $
+ * @link http://pear.php.net/package/Crypt_GPG
+ */
+
+/**
+ * PEAR Exception handler and base class
+ */
+require_once 'PEAR/Exception.php';
+
+// {{{ class Crypt_GPG_Exception
+
+/**
+ * An exception thrown by the Crypt_GPG package
+ *
+ * @category Encryption
+ * @package Crypt_GPG
+ * @author Michael Gauthier <mike@silverorange.com>
+ * @copyright 2005 silverorange
+ * @license http://www.gnu.org/copyleft/lesser.html LGPL License 2.1
+ * @link http://pear.php.net/package/Crypt_GPG
+ */
+class Crypt_GPG_Exception extends PEAR_Exception
+{
+}
+
+// }}}
+// {{{ class Crypt_GPG_FileException
+
+/**
+ * An exception thrown when a file is used in ways it cannot be used
+ *
+ * For example, if an output file is specified and the file is not writeable, or
+ * if an input file is specified and the file is not readable, this exception
+ * is thrown.
+ *
+ * @category Encryption
+ * @package Crypt_GPG
+ * @author Michael Gauthier <mike@silverorange.com>
+ * @copyright 2007-2008 silverorange
+ * @license http://www.gnu.org/copyleft/lesser.html LGPL License 2.1
+ * @link http://pear.php.net/package/Crypt_GPG
+ */
+class Crypt_GPG_FileException extends Crypt_GPG_Exception
+{
+ // {{{ private class properties
+
+ /**
+ * The name of the file that caused this exception
+ *
+ * @var string
+ */
+ private $_filename = '';
+
+ // }}}
+ // {{{ __construct()
+
+ /**
+ * Creates a new Crypt_GPG_FileException
+ *
+ * @param string $message an error message.
+ * @param integer $code a user defined error code.
+ * @param string $filename the name of the file that caused this exception.
+ */
+ public function __construct($message, $code = 0, $filename = '')
+ {
+ $this->_filename = $filename;
+ parent::__construct($message, $code);
+ }
+
+ // }}}
+ // {{{ getFilename()
+
+ /**
+ * Returns the filename of the file that caused this exception
+ *
+ * @return string the filename of the file that caused this exception.
+ *
+ * @see Crypt_GPG_FileException::$_filename
+ */
+ public function getFilename()
+ {
+ return $this->_filename;
+ }
+
+ // }}}
+}
+
+// }}}
+// {{{ class Crypt_GPG_OpenSubprocessException
+
+/**
+ * An exception thrown when the GPG subprocess cannot be opened
+ *
+ * This exception is thrown when the {@link Crypt_GPG_Engine} tries to open a
+ * new subprocess and fails.
+ *
+ * @category Encryption
+ * @package Crypt_GPG
+ * @author Michael Gauthier <mike@silverorange.com>
+ * @copyright 2005 silverorange
+ * @license http://www.gnu.org/copyleft/lesser.html LGPL License 2.1
+ * @link http://pear.php.net/package/Crypt_GPG
+ */
+class Crypt_GPG_OpenSubprocessException extends Crypt_GPG_Exception
+{
+ // {{{ private class properties
+
+ /**
+ * The command used to try to open the subprocess
+ *
+ * @var string
+ */
+ private $_command = '';
+
+ // }}}
+ // {{{ __construct()
+
+ /**
+ * Creates a new Crypt_GPG_OpenSubprocessException
+ *
+ * @param string $message an error message.
+ * @param integer $code a user defined error code.
+ * @param string $command the command that was called to open the
+ * new subprocess.
+ *
+ * @see Crypt_GPG::_openSubprocess()
+ */
+ public function __construct($message, $code = 0, $command = '')
+ {
+ $this->_command = $command;
+ parent::__construct($message, $code);
+ }
+
+ // }}}
+ // {{{ getCommand()
+
+ /**
+ * Returns the contents of the internal _command property
+ *
+ * @return string the command used to open the subprocess.
+ *
+ * @see Crypt_GPG_OpenSubprocessException::$_command
+ */
+ public function getCommand()
+ {
+ return $this->_command;
+ }
+
+ // }}}
+}
+
+// }}}
+// {{{ class Crypt_GPG_InvalidOperationException
+
+/**
+ * An exception thrown when an invalid GPG operation is attempted
+ *
+ * @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
+ */
+class Crypt_GPG_InvalidOperationException extends Crypt_GPG_Exception
+{
+ // {{{ private class properties
+
+ /**
+ * The attempted operation
+ *
+ * @var string
+ */
+ private $_operation = '';
+
+ // }}}
+ // {{{ __construct()
+
+ /**
+ * Creates a new Crypt_GPG_OpenSubprocessException
+ *
+ * @param string $message an error message.
+ * @param integer $code a user defined error code.
+ * @param string $operation the operation.
+ */
+ public function __construct($message, $code = 0, $operation = '')
+ {
+ $this->_operation = $operation;
+ parent::__construct($message, $code);
+ }
+
+ // }}}
+ // {{{ getOperation()
+
+ /**
+ * Returns the contents of the internal _operation property
+ *
+ * @return string the attempted operation.
+ *
+ * @see Crypt_GPG_InvalidOperationException::$_operation
+ */
+ public function getOperation()
+ {
+ return $this->_operation;
+ }
+
+ // }}}
+}
+
+// }}}
+// {{{ class Crypt_GPG_KeyNotFoundException
+
+/**
+ * An exception thrown when Crypt_GPG fails to find the key for various
+ * operations
+ *
+ * @category Encryption
+ * @package Crypt_GPG
+ * @author Michael Gauthier <mike@silverorange.com>
+ * @copyright 2005 silverorange
+ * @license http://www.gnu.org/copyleft/lesser.html LGPL License 2.1
+ * @link http://pear.php.net/package/Crypt_GPG
+ */
+class Crypt_GPG_KeyNotFoundException extends Crypt_GPG_Exception
+{
+ // {{{ private class properties
+
+ /**
+ * The key identifier that was searched for
+ *
+ * @var string
+ */
+ private $_keyId = '';
+
+ // }}}
+ // {{{ __construct()
+
+ /**
+ * Creates a new Crypt_GPG_KeyNotFoundException
+ *
+ * @param string $message an error message.
+ * @param integer $code a user defined error code.
+ * @param string $keyId the key identifier of the key.
+ */
+ public function __construct($message, $code = 0, $keyId= '')
+ {
+ $this->_keyId = $keyId;
+ parent::__construct($message, $code);
+ }
+
+ // }}}
+ // {{{ getKeyId()
+
+ /**
+ * Gets the key identifier of the key that was not found
+ *
+ * @return string the key identifier of the key that was not found.
+ */
+ public function getKeyId()
+ {
+ return $this->_keyId;
+ }
+
+ // }}}
+}
+
+// }}}
+// {{{ class Crypt_GPG_NoDataException
+
+/**
+ * An exception thrown when Crypt_GPG cannot find valid data for various
+ * operations
+ *
+ * @category Encryption
+ * @package Crypt_GPG
+ * @author Michael Gauthier <mike@silverorange.com>
+ * @copyright 2006 silverorange
+ * @license http://www.gnu.org/copyleft/lesser.html LGPL License 2.1
+ * @link http://pear.php.net/package/Crypt_GPG
+ */
+class Crypt_GPG_NoDataException extends Crypt_GPG_Exception
+{
+}
+
+// }}}
+// {{{ class Crypt_GPG_BadPassphraseException
+
+/**
+ * An exception thrown when a required passphrase is incorrect or missing
+ *
+ * @category Encryption
+ * @package Crypt_GPG
+ * @author Michael Gauthier <mike@silverorange.com>
+ * @copyright 2006-2008 silverorange
+ * @license http://www.gnu.org/copyleft/lesser.html LGPL License 2.1
+ * @link http://pear.php.net/package/Crypt_GPG
+ */
+class Crypt_GPG_BadPassphraseException extends Crypt_GPG_Exception
+{
+ // {{{ private class properties
+
+ /**
+ * Keys for which the passhprase is missing
+ *
+ * This contains primary user ids indexed by sub-key id.
+ *
+ * @var array
+ */
+ private $_missingPassphrases = array();
+
+ /**
+ * Keys for which the passhprase is incorrect
+ *
+ * This contains primary user ids indexed by sub-key id.
+ *
+ * @var array
+ */
+ private $_badPassphrases = array();
+
+ // }}}
+ // {{{ __construct()
+
+ /**
+ * Creates a new Crypt_GPG_BadPassphraseException
+ *
+ * @param string $message an error message.
+ * @param integer $code a user defined error code.
+ * @param string $badPassphrases an array containing user ids of keys
+ * for which the passphrase is incorrect.
+ * @param string $missingPassphrases an array containing user ids of keys
+ * for which the passphrase is missing.
+ */
+ public function __construct($message, $code = 0,
+ array $badPassphrases = array(), array $missingPassphrases = array()
+ ) {
+ $this->_badPassphrases = $badPassphrases;
+ $this->_missingPassphrases = $missingPassphrases;
+
+ parent::__construct($message, $code);
+ }
+
+ // }}}
+ // {{{ getBadPassphrases()
+
+ /**
+ * Gets keys for which the passhprase is incorrect
+ *
+ * @return array an array of keys for which the passphrase is incorrect.
+ * The array contains primary user ids indexed by the sub-key
+ * id.
+ */
+ public function getBadPassphrases()
+ {
+ return $this->_badPassphrases;
+ }
+
+ // }}}
+ // {{{ getMissingPassphrases()
+
+ /**
+ * Gets keys for which the passhprase is missing
+ *
+ * @return array an array of keys for which the passphrase is missing.
+ * The array contains primary user ids indexed by the sub-key
+ * id.
+ */
+ public function getMissingPassphrases()
+ {
+ return $this->_missingPassphrases;
+ }
+
+ // }}}
+}
+
+// }}}
+// {{{ class Crypt_GPG_DeletePrivateKeyException
+
+/**
+ * An exception thrown when an attempt is made to delete public key that has an
+ * associated private key on the keyring
+ *
+ * @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
+ */
+class Crypt_GPG_DeletePrivateKeyException extends Crypt_GPG_Exception
+{
+ // {{{ private class properties
+
+ /**
+ * The key identifier the deletion attempt was made upon
+ *
+ * @var string
+ */
+ private $_keyId = '';
+
+ // }}}
+ // {{{ __construct()
+
+ /**
+ * Creates a new Crypt_GPG_DeletePrivateKeyException
+ *
+ * @param string $message an error message.
+ * @param integer $code a user defined error code.
+ * @param string $keyId the key identifier of the public key that was
+ * attempted to delete.
+ *
+ * @see Crypt_GPG::deletePublicKey()
+ */
+ public function __construct($message, $code = 0, $keyId = '')
+ {
+ $this->_keyId = $keyId;
+ parent::__construct($message, $code);
+ }
+
+ // }}}
+ // {{{ getKeyId()
+
+ /**
+ * Gets the key identifier of the key that was not found
+ *
+ * @return string the key identifier of the key that was not found.
+ */
+ public function getKeyId()
+ {
+ return $this->_keyId;
+ }
+
+ // }}}
+}
+
+// }}}
+
+?>
diff --git a/plugins/enigma/lib/Crypt/GPG/Key.php b/plugins/enigma/lib/Crypt/GPG/Key.php
new file mode 100644
index 000000000..67a4b9c7d
--- /dev/null
+++ b/plugins/enigma/lib/Crypt/GPG/Key.php
@@ -0,0 +1,223 @@
+<?php
+
+/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
+
+/**
+ * Contains a class representing GPG keys
+ *
+ * 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 2008-2010 silverorange
+ * @license http://www.gnu.org/copyleft/lesser.html LGPL License 2.1
+ * @version CVS: $Id: Key.php 295621 2010-03-01 04:18:54Z gauthierm $
+ * @link http://pear.php.net/package/Crypt_GPG
+ */
+
+/**
+ * Sub-key class definition
+ */
+require_once 'Crypt/GPG/SubKey.php';
+
+/**
+ * User id class definition
+ */
+require_once 'Crypt/GPG/UserId.php';
+
+// {{{ class Crypt_GPG_Key
+
+/**
+ * A data class for GPG key information
+ *
+ * This class is used to store the results of the {@link Crypt_GPG::getKeys()}
+ * method.
+ *
+ * @category Encryption
+ * @package Crypt_GPG
+ * @author Michael Gauthier <mike@silverorange.com>
+ * @copyright 2008-2010 silverorange
+ * @license http://www.gnu.org/copyleft/lesser.html LGPL License 2.1
+ * @link http://pear.php.net/package/Crypt_GPG
+ * @see Crypt_GPG::getKeys()
+ */
+class Crypt_GPG_Key
+{
+ // {{{ class properties
+
+ /**
+ * The user ids associated with this key
+ *
+ * This is an array of {@link Crypt_GPG_UserId} objects.
+ *
+ * @var array
+ *
+ * @see Crypt_GPG_Key::addUserId()
+ * @see Crypt_GPG_Key::getUserIds()
+ */
+ private $_userIds = array();
+
+ /**
+ * The subkeys of this key
+ *
+ * This is an array of {@link Crypt_GPG_SubKey} objects.
+ *
+ * @var array
+ *
+ * @see Crypt_GPG_Key::addSubKey()
+ * @see Crypt_GPG_Key::getSubKeys()
+ */
+ private $_subKeys = array();
+
+ // }}}
+ // {{{ getSubKeys()
+
+ /**
+ * Gets the sub-keys of this key
+ *
+ * @return array the sub-keys of this key.
+ *
+ * @see Crypt_GPG_Key::addSubKey()
+ */
+ public function getSubKeys()
+ {
+ return $this->_subKeys;
+ }
+
+ // }}}
+ // {{{ getUserIds()
+
+ /**
+ * Gets the user ids of this key
+ *
+ * @return array the user ids of this key.
+ *
+ * @see Crypt_GPG_Key::addUserId()
+ */
+ public function getUserIds()
+ {
+ return $this->_userIds;
+ }
+
+ // }}}
+ // {{{ getPrimaryKey()
+
+ /**
+ * Gets the primary sub-key of this key
+ *
+ * The primary key is the first added sub-key.
+ *
+ * @return Crypt_GPG_SubKey the primary sub-key of this key.
+ */
+ public function getPrimaryKey()
+ {
+ $primary_key = null;
+ if (count($this->_subKeys) > 0) {
+ $primary_key = $this->_subKeys[0];
+ }
+ return $primary_key;
+ }
+
+ // }}}
+ // {{{ canSign()
+
+ /**
+ * Gets whether or not this key can sign data
+ *
+ * This key can sign data if any sub-key of this key can sign data.
+ *
+ * @return boolean true if this key can sign data and false if this key
+ * cannot sign data.
+ */
+ public function canSign()
+ {
+ $canSign = false;
+ foreach ($this->_subKeys as $subKey) {
+ if ($subKey->canSign()) {
+ $canSign = true;
+ break;
+ }
+ }
+ return $canSign;
+ }
+
+ // }}}
+ // {{{ canEncrypt()
+
+ /**
+ * Gets whether or not this key can encrypt data
+ *
+ * This key can encrypt data if any sub-key of this key can encrypt data.
+ *
+ * @return boolean true if this key can encrypt data and false if this
+ * key cannot encrypt data.
+ */
+ public function canEncrypt()
+ {
+ $canEncrypt = false;
+ foreach ($this->_subKeys as $subKey) {
+ if ($subKey->canEncrypt()) {
+ $canEncrypt = true;
+ break;
+ }
+ }
+ return $canEncrypt;
+ }
+
+ // }}}
+ // {{{ addSubKey()
+
+ /**
+ * Adds a sub-key to this key
+ *
+ * The first added sub-key will be the primary key of this key.
+ *
+ * @param Crypt_GPG_SubKey $subKey the sub-key to add.
+ *
+ * @return Crypt_GPG_Key the current object, for fluent interface.
+ */
+ public function addSubKey(Crypt_GPG_SubKey $subKey)
+ {
+ $this->_subKeys[] = $subKey;
+ return $this;
+ }
+
+ // }}}
+ // {{{ addUserId()
+
+ /**
+ * Adds a user id to this key
+ *
+ * @param Crypt_GPG_UserId $userId the user id to add.
+ *
+ * @return Crypt_GPG_Key the current object, for fluent interface.
+ */
+ public function addUserId(Crypt_GPG_UserId $userId)
+ {
+ $this->_userIds[] = $userId;
+ return $this;
+ }
+
+ // }}}
+}
+
+// }}}
+
+?>
diff --git a/plugins/enigma/lib/Crypt/GPG/Signature.php b/plugins/enigma/lib/Crypt/GPG/Signature.php
new file mode 100644
index 000000000..03ab44c53
--- /dev/null
+++ b/plugins/enigma/lib/Crypt/GPG/Signature.php
@@ -0,0 +1,428 @@
+<?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.
+ *
+ * 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 Nathan Fredrickson <nathan@silverorange.com>
+ * @copyright 2005-2010 silverorange
+ * @license http://www.gnu.org/copyleft/lesser.html LGPL License 2.1
+ * @version CVS: $Id: Signature.php 302773 2010-08-25 14:16:28Z gauthierm $
+ * @link http://pear.php.net/package/Crypt_GPG
+ */
+
+/**
+ * User id class definition
+ */
+require_once 'Crypt/GPG/UserId.php';
+
+// {{{ class Crypt_GPG_Signature
+
+/**
+ * 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 2005-2010 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
+{
+ // {{{ class properties
+
+ /**
+ * 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 integer
+ */
+ 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 integer
+ */
+ 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 boolean
+ */
+ private $_isValid = false;
+
+ // }}}
+ // {{{ __construct()
+
+ /**
+ * 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>integer creation</kbd> - the date the signature was created.
+ * This is a UNIX timestamp.
+ * - <kbd>integer expiration</kbd> - the date the signature expired. This
+ * is a UNIX timestamp. If the signature
+ * does not expire, use 0.
+ * - <kbd>boolean 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 $signature optional. Either an existing
+ * signature object, which is copied; or an array of initial values.
+ */
+ public function __construct($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;
+ } else {
+ $this->_userId = $signature->_userId;
+ }
+ }
+
+ // initialize from array
+ if (is_array($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);
+ }
+ }
+ }
+
+ // }}}
+ // {{{ getId()
+
+ /**
+ * 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;
+ }
+
+ // }}}
+ // {{{ getKeyFingerprint()
+
+ /**
+ * 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;
+ }
+
+ // }}}
+ // {{{ getKeyId()
+
+ /**
+ * 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;
+ }
+
+ // }}}
+ // {{{ getCreationDate()
+
+ /**
+ * Gets the creation date of this signature
+ *
+ * @return integer the creation date of this signature. This is a Unix
+ * timestamp.
+ */
+ public function getCreationDate()
+ {
+ return $this->_creationDate;
+ }
+
+ // }}}
+ // {{{ getExpirationDate()
+
+ /**
+ * Gets the expiration date of the signature
+ *
+ * @return integer 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;
+ }
+
+ // }}}
+ // {{{ getUserId()
+
+ /**
+ * Gets the user id associated with this signature
+ *
+ * @return Crypt_GPG_UserId the user id associated with this signature.
+ */
+ public function getUserId()
+ {
+ return $this->_userId;
+ }
+
+ // }}}
+ // {{{ isValid()
+
+ /**
+ * Gets whether or no this signature is valid
+ *
+ * @return boolean true if this signature is valid and false if it is not.
+ */
+ public function isValid()
+ {
+ return $this->_isValid;
+ }
+
+ // }}}
+ // {{{ setId()
+
+ /**
+ * 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;
+ }
+
+ // }}}
+ // {{{ setKeyFingerprint()
+
+ /**
+ * 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;
+ }
+
+ // }}}
+ // {{{ setKeyId()
+
+ /**
+ * 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;
+ }
+
+ // }}}
+ // {{{ setCreationDate()
+
+ /**
+ * Sets the creation date of this signature
+ *
+ * @param integer $creationDate the creation date of this signature. This
+ * is a Unix timestamp.
+ *
+ * @return Crypt_GPG_Signature the current object, for fluent interface.
+ */
+ public function setCreationDate($creationDate)
+ {
+ $this->_creationDate = intval($creationDate);
+ return $this;
+ }
+
+ // }}}
+ // {{{ setExpirationDate()
+
+ /**
+ * Sets the expiration date of this signature
+ *
+ * @param integer $expirationDate the expiration date of this signature.
+ * This is a Unix timestamp. Specify zero if
+ * this signature does not expire.
+ *
+ * @return Crypt_GPG_Signature the current object, for fluent interface.
+ */
+ public function setExpirationDate($expirationDate)
+ {
+ $this->_expirationDate = intval($expirationDate);
+ return $this;
+ }
+
+ // }}}
+ // {{{ setUserId()
+
+ /**
+ * 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;
+ }
+
+ // }}}
+ // {{{ setValid()
+
+ /**
+ * Sets whether or not this signature is valid
+ *
+ * @param boolean $isValid true if this signature is valid and false if it
+ * is not.
+ *
+ * @return Crypt_GPG_Signature the current object, for fluent interface.
+ */
+ public function setValid($isValid)
+ {
+ $this->_isValid = ($isValid) ? true : false;
+ return $this;
+ }
+
+ // }}}
+}
+
+// }}}
+
+?>
diff --git a/plugins/enigma/lib/Crypt/GPG/SubKey.php b/plugins/enigma/lib/Crypt/GPG/SubKey.php
new file mode 100644
index 000000000..b6316e99f
--- /dev/null
+++ b/plugins/enigma/lib/Crypt/GPG/SubKey.php
@@ -0,0 +1,649 @@
+<?php
+
+/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
+
+/**
+ * Contains a class representing GPG sub-keys and constants for GPG algorithms
+ *
+ * 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>
+ * @author Nathan Fredrickson <nathan@silverorange.com>
+ * @copyright 2005-2010 silverorange
+ * @license http://www.gnu.org/copyleft/lesser.html LGPL License 2.1
+ * @version CVS: $Id: SubKey.php 302768 2010-08-25 13:45:52Z gauthierm $
+ * @link http://pear.php.net/package/Crypt_GPG
+ */
+
+// {{{ class Crypt_GPG_SubKey
+
+/**
+ * A class for GPG sub-key information
+ *
+ * This class is used to store the results of the {@link Crypt_GPG::getKeys()}
+ * method. Sub-key objects are members of a {@link Crypt_GPG_Key} object.
+ *
+ * @category Encryption
+ * @package Crypt_GPG
+ * @author Michael Gauthier <mike@silverorange.com>
+ * @author Nathan Fredrickson <nathan@silverorange.com>
+ * @copyright 2005-2010 silverorange
+ * @license http://www.gnu.org/copyleft/lesser.html LGPL License 2.1
+ * @link http://pear.php.net/package/Crypt_GPG
+ * @see Crypt_GPG::getKeys()
+ * @see Crypt_GPG_Key::getSubKeys()
+ */
+class Crypt_GPG_SubKey
+{
+ // {{{ class constants
+
+ /**
+ * RSA encryption algorithm.
+ */
+ const ALGORITHM_RSA = 1;
+
+ /**
+ * Elgamal encryption algorithm (encryption only).
+ */
+ const ALGORITHM_ELGAMAL_ENC = 16;
+
+ /**
+ * DSA encryption algorithm (sometimes called DH, sign only).
+ */
+ const ALGORITHM_DSA = 17;
+
+ /**
+ * Elgamal encryption algorithm (signage and encryption - should not be
+ * used).
+ */
+ const ALGORITHM_ELGAMAL_ENC_SGN = 20;
+
+ // }}}
+ // {{{ class properties
+
+ /**
+ * The id of this sub-key
+ *
+ * @var string
+ */
+ private $_id = '';
+
+ /**
+ * The algorithm used to create this sub-key
+ *
+ * The value is one of the Crypt_GPG_SubKey::ALGORITHM_* constants.
+ *
+ * @var integer
+ */
+ private $_algorithm = 0;
+
+ /**
+ * The fingerprint of this sub-key
+ *
+ * @var string
+ */
+ private $_fingerprint = '';
+
+ /**
+ * Length of this sub-key in bits
+ *
+ * @var integer
+ */
+ private $_length = 0;
+
+ /**
+ * Date this sub-key was created
+ *
+ * This is a Unix timestamp.
+ *
+ * @var integer
+ */
+ private $_creationDate = 0;
+
+ /**
+ * Date this sub-key expires
+ *
+ * This is a Unix timestamp. If this sub-key does not expire, this will be
+ * zero.
+ *
+ * @var integer
+ */
+ private $_expirationDate = 0;
+
+ /**
+ * Whether or not this sub-key can sign data
+ *
+ * @var boolean
+ */
+ private $_canSign = false;
+
+ /**
+ * Whether or not this sub-key can encrypt data
+ *
+ * @var boolean
+ */
+ private $_canEncrypt = false;
+
+ /**
+ * Whether or not the private key for this sub-key exists in the keyring
+ *
+ * @var boolean
+ */
+ private $_hasPrivate = false;
+
+ /**
+ * Whether or not this sub-key is revoked
+ *
+ * @var boolean
+ */
+ private $_isRevoked = false;
+
+ // }}}
+ // {{{ __construct()
+
+ /**
+ * Creates a new sub-key object
+ *
+ * Sub-keys can be initialized from an array of named values. Available
+ * names are:
+ *
+ * - <kbd>string id</kbd> - the key id of the sub-key.
+ * - <kbd>integer algorithm</kbd> - the encryption algorithm of the
+ * sub-key.
+ * - <kbd>string fingerprint</kbd> - the fingerprint of the sub-key. The
+ * fingerprint should not contain
+ * formatting characters.
+ * - <kbd>integer length</kbd> - the length of the sub-key in bits.
+ * - <kbd>integer creation</kbd> - the date the sub-key was created.
+ * This is a UNIX timestamp.
+ * - <kbd>integer expiration</kbd> - the date the sub-key expires. This
+ * is a UNIX timestamp. If the sub-key
+ * does not expire, use 0.
+ * - <kbd>boolean canSign</kbd> - whether or not the sub-key can be
+ * used to sign data.
+ * - <kbd>boolean canEncrypt</kbd> - whether or not the sub-key can be
+ * used to encrypt data.
+ * - <kbd>boolean hasPrivate</kbd> - whether or not the private key for
+ * the sub-key exists in the keyring.
+ * - <kbd>boolean isRevoked</kbd> - whether or not this sub-key is
+ * revoked.
+ *
+ * @param Crypt_GPG_SubKey|string|array $key optional. Either an existing
+ * sub-key object, which is copied; a sub-key string, which is
+ * parsed; or an array of initial values.
+ */
+ public function __construct($key = null)
+ {
+ // parse from string
+ if (is_string($key)) {
+ $key = self::parse($key);
+ }
+
+ // copy from object
+ if ($key instanceof Crypt_GPG_SubKey) {
+ $this->_id = $key->_id;
+ $this->_algorithm = $key->_algorithm;
+ $this->_fingerprint = $key->_fingerprint;
+ $this->_length = $key->_length;
+ $this->_creationDate = $key->_creationDate;
+ $this->_expirationDate = $key->_expirationDate;
+ $this->_canSign = $key->_canSign;
+ $this->_canEncrypt = $key->_canEncrypt;
+ $this->_hasPrivate = $key->_hasPrivate;
+ $this->_isRevoked = $key->_isRevoked;
+ }
+
+ // initialize from array
+ if (is_array($key)) {
+ if (array_key_exists('id', $key)) {
+ $this->setId($key['id']);
+ }
+
+ if (array_key_exists('algorithm', $key)) {
+ $this->setAlgorithm($key['algorithm']);
+ }
+
+ if (array_key_exists('fingerprint', $key)) {
+ $this->setFingerprint($key['fingerprint']);
+ }
+
+ if (array_key_exists('length', $key)) {
+ $this->setLength($key['length']);
+ }
+
+ if (array_key_exists('creation', $key)) {
+ $this->setCreationDate($key['creation']);
+ }
+
+ if (array_key_exists('expiration', $key)) {
+ $this->setExpirationDate($key['expiration']);
+ }
+
+ if (array_key_exists('canSign', $key)) {
+ $this->setCanSign($key['canSign']);
+ }
+
+ if (array_key_exists('canEncrypt', $key)) {
+ $this->setCanEncrypt($key['canEncrypt']);
+ }
+
+ if (array_key_exists('hasPrivate', $key)) {
+ $this->setHasPrivate($key['hasPrivate']);
+ }
+
+ if (array_key_exists('isRevoked', $key)) {
+ $this->setRevoked($key['isRevoked']);
+ }
+ }
+ }
+
+ // }}}
+ // {{{ getId()
+
+ /**
+ * Gets the id of this sub-key
+ *
+ * @return string the id of this sub-key.
+ */
+ public function getId()
+ {
+ return $this->_id;
+ }
+
+ // }}}
+ // {{{ getAlgorithm()
+
+ /**
+ * Gets the algorithm used by this sub-key
+ *
+ * The algorithm should be one of the Crypt_GPG_SubKey::ALGORITHM_*
+ * constants.
+ *
+ * @return integer the algorithm used by this sub-key.
+ */
+ public function getAlgorithm()
+ {
+ return $this->_algorithm;
+ }
+
+ // }}}
+ // {{{ getCreationDate()
+
+ /**
+ * Gets the creation date of this sub-key
+ *
+ * This is a Unix timestamp.
+ *
+ * @return integer the creation date of this sub-key.
+ */
+ public function getCreationDate()
+ {
+ return $this->_creationDate;
+ }
+
+ // }}}
+ // {{{ getExpirationDate()
+
+ /**
+ * Gets the date this sub-key expires
+ *
+ * This is a Unix timestamp. If this sub-key does not expire, this will be
+ * zero.
+ *
+ * @return integer the date this sub-key expires.
+ */
+ public function getExpirationDate()
+ {
+ return $this->_expirationDate;
+ }
+
+ // }}}
+ // {{{ getFingerprint()
+
+ /**
+ * Gets the fingerprint of this sub-key
+ *
+ * @return string the fingerprint of this sub-key.
+ */
+ public function getFingerprint()
+ {
+ return $this->_fingerprint;
+ }
+
+ // }}}
+ // {{{ getLength()
+
+ /**
+ * Gets the length of this sub-key in bits
+ *
+ * @return integer the length of this sub-key in bits.
+ */
+ public function getLength()
+ {
+ return $this->_length;
+ }
+
+ // }}}
+ // {{{ canSign()
+
+ /**
+ * Gets whether or not this sub-key can sign data
+ *
+ * @return boolean true if this sub-key can sign data and false if this
+ * sub-key can not sign data.
+ */
+ public function canSign()
+ {
+ return $this->_canSign;
+ }
+
+ // }}}
+ // {{{ canEncrypt()
+
+ /**
+ * Gets whether or not this sub-key can encrypt data
+ *
+ * @return boolean true if this sub-key can encrypt data and false if this
+ * sub-key can not encrypt data.
+ */
+ public function canEncrypt()
+ {
+ return $this->_canEncrypt;
+ }
+
+ // }}}
+ // {{{ hasPrivate()
+
+ /**
+ * Gets whether or not the private key for this sub-key exists in the
+ * keyring
+ *
+ * @return boolean true the private key for this sub-key exists in the
+ * keyring and false if it does not.
+ */
+ public function hasPrivate()
+ {
+ return $this->_hasPrivate;
+ }
+
+ // }}}
+ // {{{ isRevoked()
+
+ /**
+ * Gets whether or not this sub-key is revoked
+ *
+ * @return boolean true if this sub-key is revoked and false if it is not.
+ */
+ public function isRevoked()
+ {
+ return $this->_isRevoked;
+ }
+
+ // }}}
+ // {{{ setCreationDate()
+
+ /**
+ * Sets the creation date of this sub-key
+ *
+ * The creation date is a Unix timestamp.
+ *
+ * @param integer $creationDate the creation date of this sub-key.
+ *
+ * @return Crypt_GPG_SubKey the current object, for fluent interface.
+ */
+ public function setCreationDate($creationDate)
+ {
+ $this->_creationDate = intval($creationDate);
+ return $this;
+ }
+
+ // }}}
+ // {{{ setExpirationDate()
+
+ /**
+ * Sets the expiration date of this sub-key
+ *
+ * The expiration date is a Unix timestamp. Specify zero if this sub-key
+ * does not expire.
+ *
+ * @param integer $expirationDate the expiration date of this sub-key.
+ *
+ * @return Crypt_GPG_SubKey the current object, for fluent interface.
+ */
+ public function setExpirationDate($expirationDate)
+ {
+ $this->_expirationDate = intval($expirationDate);
+ return $this;
+ }
+
+ // }}}
+ // {{{ setId()
+
+ /**
+ * Sets the id of this sub-key
+ *
+ * @param string $id the id of this sub-key.
+ *
+ * @return Crypt_GPG_SubKey the current object, for fluent interface.
+ */
+ public function setId($id)
+ {
+ $this->_id = strval($id);
+ return $this;
+ }
+
+ // }}}
+ // {{{ setAlgorithm()
+
+ /**
+ * Sets the algorithm used by this sub-key
+ *
+ * @param integer $algorithm the algorithm used by this sub-key.
+ *
+ * @return Crypt_GPG_SubKey the current object, for fluent interface.
+ */
+ public function setAlgorithm($algorithm)
+ {
+ $this->_algorithm = intval($algorithm);
+ return $this;
+ }
+
+ // }}}
+ // {{{ setFingerprint()
+
+ /**
+ * Sets the fingerprint of this sub-key
+ *
+ * @param string $fingerprint the fingerprint of this sub-key.
+ *
+ * @return Crypt_GPG_SubKey the current object, for fluent interface.
+ */
+ public function setFingerprint($fingerprint)
+ {
+ $this->_fingerprint = strval($fingerprint);
+ return $this;
+ }
+
+ // }}}
+ // {{{ setLength()
+
+ /**
+ * Sets the length of this sub-key in bits
+ *
+ * @param integer $length the length of this sub-key in bits.
+ *
+ * @return Crypt_GPG_SubKey the current object, for fluent interface.
+ */
+ public function setLength($length)
+ {
+ $this->_length = intval($length);
+ return $this;
+ }
+
+ // }}}
+ // {{{ setCanSign()
+
+ /**
+ * Sets whether of not this sub-key can sign data
+ *
+ * @param boolean $canSign true if this sub-key can sign data and false if
+ * it can not.
+ *
+ * @return Crypt_GPG_SubKey the current object, for fluent interface.
+ */
+ public function setCanSign($canSign)
+ {
+ $this->_canSign = ($canSign) ? true : false;
+ return $this;
+ }
+
+ // }}}
+ // {{{ setCanEncrypt()
+
+ /**
+ * Sets whether of not this sub-key can encrypt data
+ *
+ * @param boolean $canEncrypt true if this sub-key can encrypt data and
+ * false if it can not.
+ *
+ * @return Crypt_GPG_SubKey the current object, for fluent interface.
+ */
+ public function setCanEncrypt($canEncrypt)
+ {
+ $this->_canEncrypt = ($canEncrypt) ? true : false;
+ return $this;
+ }
+
+ // }}}
+ // {{{ setHasPrivate()
+
+ /**
+ * Sets whether of not the private key for this sub-key exists in the
+ * keyring
+ *
+ * @param boolean $hasPrivate true if the private key for this sub-key
+ * exists in the keyring and false if it does
+ * not.
+ *
+ * @return Crypt_GPG_SubKey the current object, for fluent interface.
+ */
+ public function setHasPrivate($hasPrivate)
+ {
+ $this->_hasPrivate = ($hasPrivate) ? true : false;
+ return $this;
+ }
+
+ // }}}
+ // {{{ setRevoked()
+
+ /**
+ * Sets whether or not this sub-key is revoked
+ *
+ * @param boolean $isRevoked whether or not this sub-key is revoked.
+ *
+ * @return Crypt_GPG_SubKey the current object, for fluent interface.
+ */
+ public function setRevoked($isRevoked)
+ {
+ $this->_isRevoked = ($isRevoked) ? true : false;
+ return $this;
+ }
+
+ // }}}
+ // {{{ parse()
+
+ /**
+ * Parses a sub-key object from a sub-key string
+ *
+ * See <b>doc/DETAILS</b> in the
+ * {@link http://www.gnupg.org/download/ GPG distribution} for information
+ * on how the sub-key string is parsed.
+ *
+ * @param string $string the string containing the sub-key.
+ *
+ * @return Crypt_GPG_SubKey the sub-key object parsed from the string.
+ */
+ public static function parse($string)
+ {
+ $tokens = explode(':', $string);
+
+ $subKey = new Crypt_GPG_SubKey();
+
+ $subKey->setId($tokens[4]);
+ $subKey->setLength($tokens[2]);
+ $subKey->setAlgorithm($tokens[3]);
+ $subKey->setCreationDate(self::_parseDate($tokens[5]));
+ $subKey->setExpirationDate(self::_parseDate($tokens[6]));
+
+ if ($tokens[1] == 'r') {
+ $subKey->setRevoked(true);
+ }
+
+ if (strpos($tokens[11], 's') !== false) {
+ $subKey->setCanSign(true);
+ }
+
+ if (strpos($tokens[11], 'e') !== false) {
+ $subKey->setCanEncrypt(true);
+ }
+
+ return $subKey;
+ }
+
+ // }}}
+ // {{{ _parseDate()
+
+ /**
+ * Parses a date string as provided by GPG into a UNIX timestamp
+ *
+ * @param string $string the date string.
+ *
+ * @return integer the UNIX timestamp corresponding to the provided date
+ * string.
+ */
+ private static function _parseDate($string)
+ {
+ if ($string == '') {
+ $timestamp = 0;
+ } else {
+ // all times are in UTC according to GPG documentation
+ $timeZone = new DateTimeZone('UTC');
+
+ if (strpos($string, 'T') === false) {
+ // interpret as UNIX timestamp
+ $string = '@' . $string;
+ }
+
+ $date = new DateTime($string, $timeZone);
+
+ // convert to UNIX timestamp
+ $timestamp = intval($date->format('U'));
+ }
+
+ return $timestamp;
+ }
+
+ // }}}
+}
+
+// }}}
+
+?>
diff --git a/plugins/enigma/lib/Crypt/GPG/UserId.php b/plugins/enigma/lib/Crypt/GPG/UserId.php
new file mode 100644
index 000000000..04435708c
--- /dev/null
+++ b/plugins/enigma/lib/Crypt/GPG/UserId.php
@@ -0,0 +1,373 @@
+<?php
+
+/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
+
+/**
+ * Contains a data class representing a GPG user id
+ *
+ * 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 2008-2010 silverorange
+ * @license http://www.gnu.org/copyleft/lesser.html LGPL License 2.1
+ * @version CVS: $Id: UserId.php 295621 2010-03-01 04:18:54Z gauthierm $
+ * @link http://pear.php.net/package/Crypt_GPG
+ */
+
+// {{{ class Crypt_GPG_UserId
+
+/**
+ * A class for GPG user id information
+ *
+ * This class is used to store the results of the {@link Crypt_GPG::getKeys()}
+ * method. User id objects are members of a {@link Crypt_GPG_Key} object.
+ *
+ * @category Encryption
+ * @package Crypt_GPG
+ * @author Michael Gauthier <mike@silverorange.com>
+ * @copyright 2008-2010 silverorange
+ * @license http://www.gnu.org/copyleft/lesser.html LGPL License 2.1
+ * @link http://pear.php.net/package/Crypt_GPG
+ * @see Crypt_GPG::getKeys()
+ * @see Crypt_GPG_Key::getUserIds()
+ */
+class Crypt_GPG_UserId
+{
+ // {{{ class properties
+
+ /**
+ * The name field of this user id
+ *
+ * @var string
+ */
+ private $_name = '';
+
+ /**
+ * The comment field of this user id
+ *
+ * @var string
+ */
+ private $_comment = '';
+
+ /**
+ * The email field of this user id
+ *
+ * @var string
+ */
+ private $_email = '';
+
+ /**
+ * Whether or not this user id is revoked
+ *
+ * @var boolean
+ */
+ private $_isRevoked = false;
+
+ /**
+ * Whether or not this user id is valid
+ *
+ * @var boolean
+ */
+ private $_isValid = true;
+
+ // }}}
+ // {{{ __construct()
+
+ /**
+ * Creates a new user id
+ *
+ * User ids can be initialized from an array of named values. Available
+ * names are:
+ *
+ * - <kbd>string name</kbd> - the name field of the user id.
+ * - <kbd>string comment</kbd> - the comment field of the user id.
+ * - <kbd>string email</kbd> - the email field of the user id.
+ * - <kbd>boolean valid</kbd> - whether or not the user id is valid.
+ * - <kbd>boolean revoked</kbd> - whether or not the user id is revoked.
+ *
+ * @param Crypt_GPG_UserId|string|array $userId optional. Either an
+ * existing user id object, which is copied; a user id string, which
+ * is parsed; or an array of initial values.
+ */
+ public function __construct($userId = null)
+ {
+ // parse from string
+ if (is_string($userId)) {
+ $userId = self::parse($userId);
+ }
+
+ // copy from object
+ if ($userId instanceof Crypt_GPG_UserId) {
+ $this->_name = $userId->_name;
+ $this->_comment = $userId->_comment;
+ $this->_email = $userId->_email;
+ $this->_isRevoked = $userId->_isRevoked;
+ $this->_isValid = $userId->_isValid;
+ }
+
+ // initialize from array
+ if (is_array($userId)) {
+ if (array_key_exists('name', $userId)) {
+ $this->setName($userId['name']);
+ }
+
+ if (array_key_exists('comment', $userId)) {
+ $this->setComment($userId['comment']);
+ }
+
+ if (array_key_exists('email', $userId)) {
+ $this->setEmail($userId['email']);
+ }
+
+ if (array_key_exists('revoked', $userId)) {
+ $this->setRevoked($userId['revoked']);
+ }
+
+ if (array_key_exists('valid', $userId)) {
+ $this->setValid($userId['valid']);
+ }
+ }
+ }
+
+ // }}}
+ // {{{ getName()
+
+ /**
+ * Gets the name field of this user id
+ *
+ * @return string the name field of this user id.
+ */
+ public function getName()
+ {
+ return $this->_name;
+ }
+
+ // }}}
+ // {{{ getComment()
+
+ /**
+ * Gets the comments field of this user id
+ *
+ * @return string the comments field of this user id.
+ */
+ public function getComment()
+ {
+ return $this->_comment;
+ }
+
+ // }}}
+ // {{{ getEmail()
+
+ /**
+ * Gets the email field of this user id
+ *
+ * @return string the email field of this user id.
+ */
+ public function getEmail()
+ {
+ return $this->_email;
+ }
+
+ // }}}
+ // {{{ isRevoked()
+
+ /**
+ * Gets whether or not this user id is revoked
+ *
+ * @return boolean true if this user id is revoked and false if it is not.
+ */
+ public function isRevoked()
+ {
+ return $this->_isRevoked;
+ }
+
+ // }}}
+ // {{{ isValid()
+
+ /**
+ * Gets whether or not this user id is valid
+ *
+ * @return boolean true if this user id is valid and false if it is not.
+ */
+ public function isValid()
+ {
+ return $this->_isValid;
+ }
+
+ // }}}
+ // {{{ __toString()
+
+ /**
+ * Gets a string representation of this user id
+ *
+ * The string is formatted as:
+ * <b><kbd>name (comment) <email-address></kbd></b>.
+ *
+ * @return string a string representation of this user id.
+ */
+ public function __toString()
+ {
+ $components = array();
+
+ if (strlen($this->_name) > 0) {
+ $components[] = $this->_name;
+ }
+
+ if (strlen($this->_comment) > 0) {
+ $components[] = '(' . $this->_comment . ')';
+ }
+
+ if (strlen($this->_email) > 0) {
+ $components[] = '<' . $this->_email. '>';
+ }
+
+ return implode(' ', $components);
+ }
+
+ // }}}
+ // {{{ setName()
+
+ /**
+ * Sets the name field of this user id
+ *
+ * @param string $name the name field of this user id.
+ *
+ * @return Crypt_GPG_UserId the current object, for fluent interface.
+ */
+ public function setName($name)
+ {
+ $this->_name = strval($name);
+ return $this;
+ }
+
+ // }}}
+ // {{{ setComment()
+
+ /**
+ * Sets the comment field of this user id
+ *
+ * @param string $comment the comment field of this user id.
+ *
+ * @return Crypt_GPG_UserId the current object, for fluent interface.
+ */
+ public function setComment($comment)
+ {
+ $this->_comment = strval($comment);
+ return $this;
+ }
+
+ // }}}
+ // {{{ setEmail()
+
+ /**
+ * Sets the email field of this user id
+ *
+ * @param string $email the email field of this user id.
+ *
+ * @return Crypt_GPG_UserId the current object, for fluent interface.
+ */
+ public function setEmail($email)
+ {
+ $this->_email = strval($email);
+ return $this;
+ }
+
+ // }}}
+ // {{{ setRevoked()
+
+ /**
+ * Sets whether or not this user id is revoked
+ *
+ * @param boolean $isRevoked whether or not this user id is revoked.
+ *
+ * @return Crypt_GPG_UserId the current object, for fluent interface.
+ */
+ public function setRevoked($isRevoked)
+ {
+ $this->_isRevoked = ($isRevoked) ? true : false;
+ return $this;
+ }
+
+ // }}}
+ // {{{ setValid()
+
+ /**
+ * Sets whether or not this user id is valid
+ *
+ * @param boolean $isValid whether or not this user id is valid.
+ *
+ * @return Crypt_GPG_UserId the current object, for fluent interface.
+ */
+ public function setValid($isValid)
+ {
+ $this->_isValid = ($isValid) ? true : false;
+ return $this;
+ }
+
+ // }}}
+ // {{{ parse()
+
+ /**
+ * Parses a user id object from a user id string
+ *
+ * A user id string is of the form:
+ * <b><kbd>name (comment) <email-address></kbd></b> with the <i>comment</i>
+ * and <i>email-address</i> fields being optional.
+ *
+ * @param string $string the user id string to parse.
+ *
+ * @return Crypt_GPG_UserId the user id object parsed from the string.
+ */
+ public static function parse($string)
+ {
+ $userId = new Crypt_GPG_UserId();
+ $email = '';
+ $comment = '';
+
+ // get email address from end of string if it exists
+ $matches = array();
+ if (preg_match('/^(.+?) <([^>]+)>$/', $string, $matches) === 1) {
+ $string = $matches[1];
+ $email = $matches[2];
+ }
+
+ // get comment from end of string if it exists
+ $matches = array();
+ if (preg_match('/^(.+?) \(([^\)]+)\)$/', $string, $matches) === 1) {
+ $string = $matches[1];
+ $comment = $matches[2];
+ }
+
+ $name = $string;
+
+ $userId->setName($name);
+ $userId->setComment($comment);
+ $userId->setEmail($email);
+
+ return $userId;
+ }
+
+ // }}}
+}
+
+// }}}
+
+?>
diff --git a/plugins/enigma/lib/Crypt/GPG/VerifyStatusHandler.php b/plugins/enigma/lib/Crypt/GPG/VerifyStatusHandler.php
new file mode 100644
index 000000000..083bd3012
--- /dev/null
+++ b/plugins/enigma/lib/Crypt/GPG/VerifyStatusHandler.php
@@ -0,0 +1,216 @@
+<?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: VerifyStatusHandler.php 302908 2010-08-31 03:56:54Z gauthierm $
+ * @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;
+ }
+
+ // }}}
+}
+
+?>