diff options
| author | thomascube <thomas@roundcube.net> | 2010-11-27 14:09:03 +0000 |
|---|---|---|
| committer | thomascube <thomas@roundcube.net> | 2010-11-27 14:09:03 +0000 |
| commit | 5fec6de4216883e625d7e166f862985d00c99d4a (patch) | |
| tree | a5a1aec807bcbd2e7f03bd2a0155867339b47d04 /plugins/enigma/lib/Crypt | |
| parent | 26ea6f9ceb79a78b8b804897d863654bac46d01a (diff) | |
Copy plugins to release branch
Diffstat (limited to 'plugins/enigma/lib/Crypt')
| -rw-r--r-- | plugins/enigma/lib/Crypt/GPG.php | 2542 | ||||
| -rw-r--r-- | plugins/enigma/lib/Crypt/GPG/DecryptStatusHandler.php | 336 | ||||
| -rw-r--r-- | plugins/enigma/lib/Crypt/GPG/Engine.php | 1758 | ||||
| -rw-r--r-- | plugins/enigma/lib/Crypt/GPG/Exceptions.php | 473 | ||||
| -rw-r--r-- | plugins/enigma/lib/Crypt/GPG/Key.php | 223 | ||||
| -rw-r--r-- | plugins/enigma/lib/Crypt/GPG/Signature.php | 428 | ||||
| -rw-r--r-- | plugins/enigma/lib/Crypt/GPG/SubKey.php | 649 | ||||
| -rw-r--r-- | plugins/enigma/lib/Crypt/GPG/UserId.php | 373 | ||||
| -rw-r--r-- | plugins/enigma/lib/Crypt/GPG/VerifyStatusHandler.php | 216 |
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; + } + + // }}} +} + +?> |