/usr/share/php/Crypt/GPGAbstract.php is in php-crypt-gpg 1.4.0-1ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 | <?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 an abstract implementation of a user of the
* {@link Crypt_GPG_Engine} class.
*
* 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 2005-2013 silverorange
* @license http://www.gnu.org/copyleft/lesser.html LGPL License 2.1
* @version CVS: $Id: GPG.php 305428 2010-11-17 02:47:56Z 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/
*/
/**
* 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_GPGAbstract
/**
* Base class for implementing a user of {@link Crypt_GPG_Engine}
*
* @category Encryption
* @package Crypt_GPG
* @author Nathan Fredrickson <nathan@silverorange.com>
* @author Michael Gauthier <mike@silverorange.com>
* @copyright 2005-2013 silverorange
* @license http://www.gnu.org/copyleft/lesser.html LGPL License 2.1
* @link http://pear.php.net/package/Crypt_GPG
* @link http://www.gnupg.org/
*/
abstract class Crypt_GPGAbstract
{
// {{{ 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;
/**
* Error code returned when a key could not be created.
*/
const ERROR_KEY_NOT_CREATED = 12;
/**
* Error code returned when bad key parameters are used during key
* generation.
*/
const ERROR_BAD_KEY_PARAMS = 13;
// }}}
// {{{ 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_GPGAbstract::setEngine()
*/
protected $engine = null;
// }}}
// {{{ __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>string agent</kbd> - the location of the GnuPG agent
* binary. The gpg-agent is only
* used for GnuPG 2.x. If not
* specified, the engine attempts
* to auto-detect the gpg-agent
* binary location using a list of
* know default locations for the
* current operating system.
* - <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.
*
* @throws PEAR_Exception if the provided <kbd>agent</kbd> is invalid, or
* if no <kbd>agent</kbd> is provided and no suitable gpg-agent
* cound be found.
*/
public function __construct(array $options = array())
{
$this->setEngine(new Crypt_GPG_Engine($options));
}
// }}}
// {{{ 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 Crypt_GPGAbstract the current object, for fluent interface.
*/
public function setEngine(Crypt_GPG_Engine $engine)
{
$this->engine = $engine;
return $this;
}
// }}}
// {{{ _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
*/
protected 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 self::ERROR_NONE:
case self::ERROR_KEY_NOT_FOUND:
// ignore not found key errors
break;
case self::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 self::ERROR_NONE:
case self::ERROR_KEY_NOT_FOUND:
// ignore not found key errors
break;
case self::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;
}
// }}}
}
// }}}
?>
|