Add some code for S/MIME signatures verification, update Crypt_GPG package

1 files changed, 875 insertions, 0 deletions

diff --git a/program/lib/Crypt/GPG/PinEntry.php b/program/lib/Crypt/GPG/PinEntry.php
new file mode 100644
index 000000000..c09703617
--- /dev/null
+++ b/program/lib/Crypt/GPG/PinEntry.php
@@ -0,0 +1,875 @@
+<?php
+
+/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
+
+/**
+ * Contains a class implementing automatic pinentry for gpg-agent
+ *
+ * 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 2013 silverorange
+ * @license   http://www.gnu.org/copyleft/lesser.html LGPL License 2.1
+ * @version   CVS: $Id$
+ * @link      http://pear.php.net/package/Crypt_GPG
+ */
+
+/**
+ * CLI user-interface and parser.
+ */
+require_once 'Console/CommandLine.php';
+
+// {{{ class Crypt_GPG_PinEntry
+
+/**
+ * A command-line dummy pinentry program for use with gpg-agent and Crypt_GPG
+ *
+ * This pinentry receives passphrases through en environment variable and
+ * automatically enters the PIN in response to gpg-agent requests. No user-
+ * interaction required.
+ *
+ * Thie pinentry can be run independently for testing and debugging with the
+ * following syntax:
+ *
+ * <pre>
+ * Usage:
+ *   crypt-gpg-pinentry [options]
+ *
+ * Options:
+ *   -l log, --log=log  Optional location to log pinentry activity.
+ *   -v, --verbose      Sets verbosity level. Use multiples for more detail
+ *                      (e.g. "-vv").
+ *   -h, --help         show this help message and exit
+ *   --version          show the program version and exit
+ * </pre>
+ *
+ * @category  Encryption
+ * @package   Crypt_GPG
+ * @author    Michael Gauthier <mike@silverorange.com>
+ * @copyright 2013 silverorange
+ * @license   http://www.gnu.org/copyleft/lesser.html LGPL License 2.1
+ * @link      http://pear.php.net/package/Crypt_GPG
+ * @see       Crypt_GPG::getKeys()
+ */
+class Crypt_GPG_PinEntry
+{
+    // {{{ class constants
+
+    /**
+     * Verbosity level for showing no output.
+     */
+    const VERBOSITY_NONE = 0;
+
+    /**
+     * Verbosity level for showing error output.
+     */
+    const VERBOSITY_ERRORS = 1;
+
+    /**
+     * Verbosity level for showing all output, including Assuan protocol
+     * messages.
+     */
+    const VERBOSITY_ALL = 2;
+
+    /**
+     * Length of buffer for reading lines from the Assuan server.
+     *
+     * 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;
+
+    // }}}
+    // {{{ protected properties
+
+    /**
+     * File handle for the input stream
+     *
+     * @var resource
+     */
+    protected $stdin = null;
+
+    /**
+     * File handle for the output stream
+     *
+     * @var resource
+     */
+    protected $stdout = null;
+
+    /**
+     * File handle for the log file if a log file is used
+     *
+     * @var resource
+     */
+    protected $logFile = null;
+
+    /**
+     * Whether or not this pinentry is finished and is exiting
+     *
+     * @var boolean
+     */
+    protected $moribund = false;
+
+    /**
+     * Verbosity level
+     *
+     * One of:
+     * - {@link Crypt_GPG_PinEntry::VERBOSITY_NONE},
+     * - {@link Crypt_GPG_PinEntry::VERBOSITY_ERRORS}, or
+     * - {@link Crypt_GPG_PinEntry::VERBOSITY_ALL}
+     *
+     * @var integer
+     */
+    protected $verbosity = self::VERBOSITY_NONE;
+
+    /**
+     * The command-line interface parser for this pinentry
+     *
+     * @var Console_CommandLine
+     *
+     * @see Crypt_GPG_PinEntry::getParser()
+     */
+    protected $parser = null;
+
+    /**
+     * PINs to be entered by this pinentry
+     *
+     * An indexed array of associative arrays in the form:
+     * <code>
+     * <?php
+     *   array(
+     *     array(
+     *       'keyId'      => $keyId,
+     *       'passphrase' => $passphrase
+     *     ),
+     *     ...
+     *   );
+     * ?>
+     * </code>
+     *
+     * This array is parsed from the environment variable
+     * <kbd>PINENTRY_USER_DATA</kbd>.
+     *
+     * @var array
+     *
+     * @see Crypt_GPG_PinEntry::initPinsFromENV()
+     */
+    protected $pins = array();
+
+    /**
+     * PINs that have been tried for the current PIN
+     *
+     * This is an associative array indexed by the key identifier with
+     * values being the same as elements in the {@link Crypt_GPG_PinEntry::$pins}
+     * array.
+     *
+     * @var array
+     */
+    protected $triedPins = array();
+
+    /**
+     * The PIN currently being requested by the Assuan server
+     *
+     * If set, this is an associative array in the form:
+     * <code>
+     * <?php
+     *   array(
+     *     'keyId'  => $shortKeyId,
+     *     'userId' => $userIdString
+     *   );
+     * ?>
+     * </code>
+     *
+     * @var array|null
+     */
+    protected $currentPin = null;
+
+    // }}}
+    // {{{ __invoke()
+
+    /**
+     * Runs this pinentry
+     *
+     * @return void
+     */
+    public function __invoke()
+    {
+        $this->parser = $this->getCommandLineParser();
+
+        try {
+            $result = $this->parser->parse();
+
+            $this->setVerbosity($result->options['verbose']);
+            $this->setLogFilename($result->options['log']);
+
+            $this->connect();
+            $this->initPinsFromENV();
+
+            while (($line = fgets($this->stdin, self::CHUNK_SIZE)) !== false) {
+                $this->parseCommand(mb_substr($line, 0, -1, '8bit'));
+                if ($this->moribund) {
+                    break;
+                }
+            }
+
+            $this->disconnect();
+
+        } catch (Console_CommandLineException $e) {
+            $this->log($e->getMessage() . PHP_EOL, slf::VERBOSITY_ERRORS);
+            exit(1);
+        } catch (Exception $e) {
+            $this->log($e->getMessage() . PHP_EOL, self::VERBOSITY_ERRORS);
+            $this->log($e->getTraceAsString() . PHP_EOL, self::VERBOSITY_ERRORS);
+            exit(1);
+        }
+    }
+
+    // }}}
+    // {{{ setVerbosity()
+
+    /**
+     * Sets the verbosity of logging for this pinentry
+     *
+     * Verbosity levels are:
+     *
+     * - {@link Crypt_GPG_PinEntry::VERBOSITY_NONE}   - no logging.
+     * - {@link Crypt_GPG_PinEntry::VERBOSITY_ERRORS} - log errors only.
+     * - {@link Crypt_GPG_PinEntry::VERBOSITY_ALL}    - log everything, including
+     *                                                  the assuan protocol.
+     *
+     * @param integer $verbosity the level of verbosity of this pinentry.
+     *
+     * @return Crypt_GPG_PinEntry the current object, for fluent interface.
+     */
+    public function setVerbosity($verbosity)
+    {
+        $this->verbosity = (integer)$verbosity;
+        return $this;
+    }
+
+    // }}}
+    // {{{ setLogFilename()
+
+    /**
+     * Sets the log file location
+     *
+     * @param string $filename the new log filename to use. If an empty string
+     *                         is used, file-based logging is disabled.
+     *
+     * @return Crypt_GPG_PinEntry the current object, for fluent interface.
+     */
+    public function setLogFilename($filename)
+    {
+        if (is_resource($this->logFile)) {
+            fflush($this->logFile);
+            fclose($this->logFile);
+            $this->logFile = null;
+        }
+
+        if ($filename != '') {
+            if (($this->logFile = fopen($filename, 'w')) === false) {
+                $this->log(
+                    'Unable to open log file "' . $filename . '" '
+                    . 'for writing.' . PHP_EOL,
+                    self::VERBOSITY_ERRORS
+                );
+                exit(1);
+            } else {
+                stream_set_write_buffer($this->logFile, 0);
+            }
+        }
+
+        return $this;
+    }
+
+    // }}}
+    // {{{ getUIXML()
+
+    /**
+     * Gets the CLI user-interface definition for this pinentry
+     *
+     * Detects whether or not this package is PEAR-installed and appropriately
+     * locates the XML UI definition.
+     *
+     * @return string the location of the CLI user-interface definition XML.
+     */
+    protected function getUIXML()
+    {
+        $dir = '@data-dir@' . DIRECTORY_SEPARATOR
+            . '@package-name@' . DIRECTORY_SEPARATOR . 'data';
+
+        // Check if we're running directly from a git checkout or if we're
+        // running from a PEAR-packaged version.
+        if ($dir[0] == '@') {
+            $dir = dirname(__FILE__) . DIRECTORY_SEPARATOR . '..'
+                . DIRECTORY_SEPARATOR . '..' . DIRECTORY_SEPARATOR . 'data';
+        }
+
+        return $dir . DIRECTORY_SEPARATOR . 'pinentry-cli.xml';
+    }
+
+    // }}}
+    // {{{ getCommandLineParser()
+
+    /**
+     * Gets the CLI parser for this pinentry
+     *
+     * @return Console_CommandLine the CLI parser for this pinentry.
+     */
+    protected function getCommandLineParser()
+    {
+        return Console_CommandLine::fromXmlFile($this->getUIXML());
+    }
+
+    // }}}
+    // {{{ log()
+
+    /**
+     * Logs a message at the specified verbosity level
+     *
+     * If a log file is used, the message is written to the log. Otherwise,
+     * the message is sent to STDERR.
+     *
+     * @param string  $data  the message to log.
+     * @param integer $level the verbosity level above which the message should
+     *                       be logged.
+     *
+     * @return Crypt_GPG_PinEntry the current object, for fluent interface.
+     */
+    protected function log($data, $level)
+    {
+        if ($this->verbosity >= $level) {
+            if (is_resource($this->logFile)) {
+                fwrite($this->logFile, $data);
+                fflush($this->logFile);
+            } else {
+                $this->parser->outputter->stderr($data);
+            }
+        }
+
+        return $this;
+    }
+
+    // }}}
+    // {{{ connect()
+
+    /**
+     * Connects this pinentry to the assuan server
+     *
+     * Opens I/O streams and sends initial handshake.
+     *
+     * @return Crypt_GPG_PinEntry the current object, for fluent interface.
+     */
+    protected function connect()
+    {
+        // Binary operations will not work on Windows with PHP < 5.2.6.
+        $rb = (version_compare(PHP_VERSION, '5.2.6') < 0) ? 'r' : 'rb';
+        $wb = (version_compare(PHP_VERSION, '5.2.6') < 0) ? 'w' : 'wb';
+
+        $this->stdin  = fopen('php://stdin', $rb);
+        $this->stdout = fopen('php://stdout', $wb);
+
+        if (function_exists('stream_set_read_buffer')) {
+            stream_set_read_buffer($this->stdin, 0);
+        }
+        stream_set_write_buffer($this->stdout, 0);
+
+        // initial handshake
+        $this->send($this->getOK('Crypt_GPG pinentry ready and waiting'));
+
+        return $this;
+    }
+
+    // }}}
+    // {{{ parseCommand()
+
+    /**
+     * Parses an assuan command and performs the appropriate action
+     *
+     * Documentation of the assuan commands for pinentry is limited to
+     * non-existent. Most of these commands were taken from the C source code
+     * to gpg-agent and pinentry.
+     *
+     * Additional context was provided by using strace -f when calling the
+     * gpg-agent.
+     *
+     * @param string $line the assuan command line to parse
+     *
+     * @return Crypt_GPG_PinEntry the current object, for fluent interface.
+     */
+    protected function parseCommand($line)
+    {
+        $this->log('<- ' . $line . PHP_EOL, self::VERBOSITY_ALL);
+
+        $parts = explode(' ', $line, 2);
+
+        $command = $parts[0];
+
+        if (count($parts) === 2) {
+            $data = $parts[1];
+        } else {
+            $data = null;
+        }
+
+        switch ($command) {
+        case 'SETDESC':
+            return $this->sendSetDescription($data);
+
+        case 'SETPROMPT':
+        case 'SETERROR':
+        case 'SETOK':
+        case 'SETNOTOK':
+        case 'SETCANCEL':
+        case 'SETQUALITYBAR':
+        case 'SETQUALITYBAR_TT':
+        case 'OPTION':
+            return $this->sendNotImplementedOK();
+
+        case 'MESSAGE':
+            return $this->sendMessage();
+
+        case 'CONFIRM':
+            return $this->sendConfirm();
+
+        case 'GETINFO':
+            return $this->sendGetInfo($data);
+
+        case 'GETPIN':
+            return $this->sendGetPin($data);
+
+        case 'RESET':
+            return $this->sendReset();
+
+        case 'BYE':
+            return $this->sendBye();
+        }
+    }
+
+    // }}}
+    // {{{ initPinsFromENV()
+
+    /**
+     * Initializes the PINs to be entered by this pinentry from the environment
+     * variable PINENTRY_USER_DATA
+     *
+     * The PINs are parsed from a JSON-encoded string.
+     *
+     * @return Crypt_GPG_PinEntry the current object, for fluent interface.
+     */
+    protected function initPinsFromENV()
+    {
+        if (($userData = getenv('PINENTRY_USER_DATA')) !== false) {
+            $pins = json_decode($userData, true);
+            if ($pins === null) {
+                $this->log(
+                    '-- failed to parse user data' . PHP_EOL,
+                    self::VERBOSITY_ERRORS
+                );
+            } else {
+                $this->pins = $pins;
+                $this->log(
+                    '-- got user data [not showing passphrases]' . PHP_EOL,
+                    self::VERBOSITY_ALL
+                );
+            }
+        }
+
+        return $this;
+    }
+
+    // }}}
+    // {{{ disconnect()
+
+    /**
+     * Disconnects this pinentry from the Assuan server
+     *
+     * @return Crypt_GPG_PinEntry the current object, for fluent interface.
+     */
+    protected function disconnect()
+    {
+        $this->log('-- disconnecting' . PHP_EOL, self::VERBOSITY_ALL);
+
+        fflush($this->stdout);
+        fclose($this->stdout);
+        fclose($this->stdin);
+
+        $this->stdin  = null;
+        $this->stdout = null;
+
+        $this->log('-- disconnected' . PHP_EOL, self::VERBOSITY_ALL);
+
+        if (is_resource($this->logFile)) {
+            fflush($this->logFile);
+            fclose($this->logFile);
+            $this->logFile = null;
+        }
+
+        return $this;
+    }
+
+    // }}}
+    // {{{ sendNotImplementedOK()
+
+    /**
+     * Sends an OK response for a not implemented feature
+     *
+     * @return Crypt_GPG_PinEntry the current object, for fluent interface.
+     */
+    protected function sendNotImplementedOK()
+    {
+        return $this->send($this->getOK());
+    }
+
+    // }}}
+    // {{{ sendSetDescription()
+
+    /**
+     * Parses the currently requested key identifier and user identifier from
+     * the description passed to this pinentry
+     *
+     * @param string $text the raw description sent from gpg-agent.
+     *
+     * @return Crypt_GPG_PinEntry the current object, for fluent interface.
+     */
+    protected function sendSetDescription($text)
+    {
+        $text = rawurldecode($text);
+        $matches = array();
+        // TODO: handle user id with quotation marks
+        $exp = '/\n"(.+)"\n.*\sID ([A-Z0-9]+),\n/mu';
+        if (preg_match($exp, $text, $matches) === 1) {
+            $userId = $matches[1];
+            $keyId  = $matches[2];
+
+            // only reset tried pins for new requested pin
+            if (   $this->currentPin === null
+                || $this->currentPin['keyId'] !== $keyId
+            ) {
+                $this->currentPin = array(
+                    'userId' => $userId,
+                    'keyId'  => $keyId
+                );
+                $this->triedPins = array();
+                $this->log(
+                    '-- looking for PIN for ' . $keyId . PHP_EOL,
+                    self::VERBOSITY_ALL
+                );
+            }
+        }
+
+        return $this->send($this->getOK());
+    }
+
+    // }}}
+    // {{{ sendConfirm()
+
+    /**
+     * Tells the assuan server the PIN entry was confirmed (not cancelled)
+     * by pressing the fake 'close' button
+     *
+     * @return Crypt_GPG_PinEntry the current object, for fluent interface.
+     */
+    protected function sendConfirm()
+    {
+        return $this->sendButtonInfo('close');
+    }
+
+    // }}}
+    // {{{ sendMessage()
+
+    /**
+     * Tells the assuan server that any requested pop-up messages were confirmed
+     * by pressing the fake 'close' button
+     *
+     * @return Crypt_GPG_PinEntry the current object, for fluent interface.
+     */
+    protected function sendMessage()
+    {
+        return $this->sendButtonInfo('close');
+    }
+
+    // }}}
+    // {{{ sendButtonInfo()
+
+    /**
+     * Sends information about pressed buttons to the assuan server
+     *
+     * This is used to fake a user-interface for this pinentry.
+     *
+     * @param string $text the button status to send.
+     *
+     * @return Crypt_GPG_PinEntry the current object, for fluent interface.
+     */
+    protected function sendButtonInfo($text)
+    {
+        return $this->send('BUTTON_INFO ' . $text . "\n");
+    }
+
+    // }}}
+    // {{{ sendGetPin()
+
+    /**
+     * Sends the PIN value for the currently requested key
+     *
+     * @return Crypt_GPG_PinEntry the current object, for fluent interface.
+     */
+    protected function sendGetPin()
+    {
+        $foundPin = '';
+
+        if (is_array($this->currentPin)) {
+            $keyIdLength = mb_strlen($this->currentPin['keyId'], '8bit');
+
+            // search for the pin
+            foreach ($this->pins as $pin) {
+                // only check pins we haven't tried
+                if (!isset($this->triedPins[$pin['keyId']])) {
+
+                    // get last X characters of key identifier to compare
+                    $keyId = mb_substr(
+                        $pin['keyId'],
+                        -$keyIdLength,
+                        mb_strlen($pin['keyId'], '8bit'),
+                        '8bit'
+                    );
+
+                    if ($keyId === $this->currentPin['keyId']) {
+                        $foundPin = $pin['passphrase'];
+                        $this->triedPins[$pin['keyId']] = $pin;
+                        break;
+                    }
+                }
+            }
+        }
+
+        return $this
+            ->send($this->getData($foundPin))
+            ->send($this->getOK());
+    }
+
+    // }}}
+    // {{{ sendGetInfo()
+
+    /**
+     * Sends information about this pinentry
+     *
+     * @param string $data the information requested by the assuan server.
+     *                     Currently only 'pid' is supported. Other requests
+     *                     return no information.
+     *
+     * @return Crypt_GPG_PinEntry the current object, for fluent interface.
+     */
+    protected function sendGetInfo($data)
+    {
+        $parts   = explode(' ', $data, 2);
+        $command = reset($parts);
+
+        switch ($command) {
+        case 'pid':
+            return $this->sendGetInfoPID();
+        default:
+            return $this->send($this->getOK());
+        }
+
+        return $this;
+    }
+    // }}}
+    // {{{ sendGetInfoPID()
+
+    /**
+     * Sends the PID of this pinentry to the assuan server
+     *
+     * @return Crypt_GPG_PinEntry the current object, for fluent interface.
+     */
+    protected function sendGetInfoPID()
+    {
+        return $this
+            ->send($this->getData(getmypid()))
+            ->send($this->getOK());
+    }
+
+    // }}}
+    // {{{ sendBye()
+
+    /**
+     * Flags this pinentry for disconnection and sends an OK response
+     *
+     * @return Crypt_GPG_PinEntry the current object, for fluent interface.
+     */
+    protected function sendBye()
+    {
+        $return = $this->send($this->getOK('closing connection'));
+        $this->moribund = true;
+        return $return;
+    }
+
+    // }}}
+    // {{{ sendReset()
+
+    /**
+     * Resets this pinentry and sends an OK response
+     *
+     * @return Crypt_GPG_PinEntry the current object, for fluent interface.
+     */
+    protected function sendReset()
+    {
+        $this->currentPin = null;
+        $this->triedPins = array();
+        return $this->send($this->getOK());
+    }
+
+    // }}}
+    // {{{ getOK()
+
+    /**
+     * Gets an OK response to send to the assuan server
+     *
+     * @param string $data an optional message to include with the OK response.
+     *
+     * @return string the OK response.
+     */
+    protected function getOK($data = null)
+    {
+        $return = 'OK';
+
+        if ($data) {
+            $return .= ' ' . $data;
+        }
+
+        return $return . "\n";
+    }
+
+    // }}}
+    // {{{ getData()
+
+    /**
+     * Gets data ready to send to the assuan server
+     *
+     * Data is appropriately escaped and long lines are wrapped.
+     *
+     * @param string $data the data to send to the assuan server.
+     *
+     * @return string the properly escaped, formatted data.
+     *
+     * @see  http://www.gnupg.org/documentation/manuals/assuan/Server-responses.html
+     */
+    protected function getData($data)
+    {
+        // Escape data. Only %, \n and \r need to be escaped but other
+        // values are allowed to be escaped. See
+        // http://www.gnupg.org/documentation/manuals/assuan/Server-responses.html
+        $data = rawurlencode($data);
+        $data = $this->getWordWrappedData($data, 'D');
+        return $data;
+    }
+
+    // }}}
+    // {{{ getComment()
+
+    /**
+     * Gets a comment ready to send to the assuan server
+     *
+     * @param string $data the comment to send to the assuan server.
+     *
+     * @return string the properly formatted comment.
+     *
+     * @see  http://www.gnupg.org/documentation/manuals/assuan/Server-responses.html
+     */
+    protected function getComment($data)
+    {
+        return $this->getWordWrappedData($data, '#');
+    }
+
+    // }}}
+    // {{{ getWordWrappedData()
+
+    /**
+     * Wraps strings at 1,000 bytes without splitting UTF-8 multibyte
+     * characters
+     *
+     * Each line is prepended with the specified line prefix. Wrapped lines
+     * are automatically appended with \ characters.
+     *
+     * Protocol strings are UTF-8 but maximum line length is 1,000 bytes.
+     * <kbd>mb_strcut()</kbd> is used so we can limit line length by bytes
+     * and not split characters across multiple lines.
+     *
+     * @param string $data   the data to wrap.
+     * @param string $prefix a single character to use as the line prefix. For
+     *                       example, 'D' or '#'.
+     *
+     * @return string the word-wrapped, prefixed string.
+     *
+     * @see http://www.gnupg.org/documentation/manuals/assuan/Server-responses.html
+     */
+    protected function getWordWrappedData($data, $prefix)
+    {
+        $lines = array();
+
+        do {
+            if (mb_strlen($data, '8bit') > 997) {
+                $line = $prefix . ' ' . mb_strcut($data, 0, 996, 'utf-8') . "\\\n";
+                $lines[] = $line;
+                $lineLength = mb_strlen($line, '8bit') - 1;
+                $dataLength = mb_substr($data, '8bit');
+                $data = mb_substr(
+                    $data,
+                    $lineLength,
+                    $dataLength - $lineLength,
+                    '8bit'
+                );
+            } else {
+                $lines[] = $prefix . ' ' . $data . "\n";
+                $data = '';
+            }
+        } while ($data != '');
+
+        return implode('', $lines);
+    }
+
+    // }}}
+    // {{{ send()
+
+    /**
+     * Sends raw data to the assuan server
+     *
+     * @param string $data the data to send.
+     *
+     * @return Crypt_GPG_PinEntry the current object, for fluent interface.
+     */
+    protected function send($data)
+    {
+        $this->log('-> ' . $data, self::VERBOSITY_ALL);
+        fwrite($this->stdout, $data);
+        fflush($this->stdout);
+        return $this;
+    }
+
+    // }}}
+}
+
+// }}}
+
+?>