* @copyright 2014 Christian Weiske * @license http://www.gnu.org/licenses/agpl.html GNU AGPL v3 * @link http://cweiske.de/phancap.htm */ if (!in_array('phar', stream_get_wrappers()) || !class_exists('Phar', false)) { echo "Phar extension not avaiable\n"; exit(255); } $web = 'www/index.php'; /** * Rewrite the HTTP request path to an internal file. * Maps "" and "/" to "www/index.php". * * @param string $path Path from the browser, relative to the .phar * * @return string Internal path. */ function rewritePath($path) { if ($path == '') { //we need a / to get the relative links on index.php work if (!isset($_SERVER['REQUEST_SCHEME'])) { $_SERVER['REQUEST_SCHEME'] = 'http'; } $url = $_SERVER['REQUEST_SCHEME'] . '://' . $_SERVER['HTTP_HOST'] . preg_replace('/[?#].*$/', '', $_SERVER['REQUEST_URI']) . '/'; header('Location: ' . $url); exit(0); } else if ($path == '/') { return 'www/index.php'; } if (substr($path, -4) == '.css') { header('Expires: ' . date('r', time() + 86400 * 7)); } return 'www' . $path; } set_include_path( 'phar://' . __FILE__ . PATH_SEPARATOR . 'phar://' . __FILE__ . '/lib/' ); Phar::webPhar(null, $web, null, array(), 'rewritePath'); //TODO: implement CLI setup check echo "phancap can only be used in the browser\n"; exit(1); __HALT_COMPILER(); ?>  phancap.phar www/setup.php*%tW*3>C www/get.php %tW \Fawww/infinite.png%tWCwww/README.htmld%tWd/ www/index.php%tWwww/css/phancap.css%tWjwww/css/bootstrap-theme.min.cssZ_%tWZ_34Vwww/css/bootstrap.min.css%tW>J lib/PEAR.phpi%tWi-Blib/System.phpO%tWOng<lib/PEAR/Exception.php6%tW6,lib/Console/Getopt.php4%tW4[Ww lib/PEAR5.php?%tW?xʶ README.rstM %tWM \data/phancap.config.php.dist%tWa\Rsrc/phancap/Config.php#%tW#.src/phancap/Autoloader.php%tWmdsrc/phancap/Executor.php%tWCrȶsrc/phancap/Options.php,%tW,xMsrc/phancap/Image.php %tW ^src/phancap/Authenticator.php %tW o5src/phancap/Repository.phph %tWh pM src/phancap/Adapter/Cutycapt.phps%tWsȕ src/phar-stub.phpn%tWn]3l * @copyright 2014 Christian Weiske * @license http://www.gnu.org/licenses/agpl.html GNU AGPL v3 * @link http://cweiske.de/phancap.htm */ namespace phancap; header('HTTP/1.0 500 Internal Server Error'); if (file_exists(__DIR__ . '/../src/phancap/Autoloader.php')) { include_once __DIR__ . '/../src/phancap/Autoloader.php'; Autoloader::register(); } else { include_once 'phancap/Autoloader.php'; } $messages = array(); $config = new Config(); try { $config->load(); if ($config->disableSetup) { header('HTTP/1.0 403 Forbidden'); header('Content-type: text/plain'); echo "Setup check is disabled.\n"; exit(1); } $messages[][] = array('ok', 'Base configuration is ok'); if ($config->access === true) { $messages[][] = array('ok', 'Everyone may access the API'); } else if ($config->access === false) { $messages[][] = array('err', 'API access is disabled'); } else { $messages[][] = array( 'ok', count($config->access) . ' users may access the API' ); } foreach ($config->cfgFiles as $cfgFile) { $messages[][] = array( 'info', 'Possible config file: ' . $cfgFile ); } if ($config->cfgFileExists) { $messages[][] = array( 'ok', 'Configuration file loaded' ); } else { $messages[][] = array( 'info', 'No configuration file found' ); } } catch (\Exception $e) { $messages[][] = array('err', $e->getMessage()); } $adapter = array( 'Cutycapt' ); foreach ($adapter as $classpart) { $class = '\\phancap\\Adapter_' . $classpart; $adapter = new $class(); $adapter->setConfig($config); $errors = $adapter->isAvailable(); if ($errors === true) { $messages[][] = array( 'ok', 'Adapter ' . $classpart . ' is available' ); } else { foreach ($errors as $msg) { $messages['Adapter: '. $classpart][] = array('err', $msg); } } } $out = << phancap setup check
    HTM; $stateMap = array( 'ok' => 'success', 'info' => 'info', 'err' => 'danger' ); foreach ($messages as $key => $messages) { if (!is_numeric($key)) { $out .= '
  • ' . htmlspecialchars($key) . '
      '; } foreach ($messages as $data) { list($state, $message) = $data; $out .= '
    • '; $out .= htmlspecialchars($message); $out .= '
    • ' . "\n"; } if (!is_numeric($key)) { $out .= '
  • ' . "\n"; } } $out .= <<

    back to the index

HTM; header('HTTP/1.0 200 OK'); echo $out; ?> * @copyright 2014 Christian Weiske * @license http://www.gnu.org/licenses/agpl.html GNU AGPL v3 * @link http://cweiske.de/phancap.htm */ namespace phancap; header('HTTP/1.0 500 Internal Server Error'); if (file_exists(__DIR__ . '/../src/phancap/Autoloader.php')) { include_once __DIR__ . '/../src/phancap/Autoloader.php'; Autoloader::register(); } else { include_once 'phancap/Autoloader.php'; } $config = new Config(); $config->load(); $options = new Options(); try { $options->setConfig($config); $options->parse($_GET); } catch (\InvalidArgumentException $e) { header('HTTP/1.0 400 Bad Request'); header('Content-type: text/plain'); echo $e->getMessage() . "\n"; exit(1); } $auth = new Authenticator(); try { $auth->authenticate($config); } catch (\Exception $e) { header('HTTP/1.0 401 Unauthorized'); header('Content-type: text/plain'); echo $e->getMessage() . "\n"; exit(1); } if (strpos($_SERVER['HTTP_USER_AGENT'], ' cutycapt ') !== false) { //phancap is trying to render a page with an image that // is being fetched from phancap itself, leading to an // infinite loop header('HTTP/1.0 500 Infinite Loop'); header('Location: ' . $config->getCurrentUrlDir() . '/infinite.png'); exit(3); } $rep = new Repository(); $rep->setConfig($config); try { $img = $rep->getImage($options); if ($config->redirect) { header('HTTP/1.0 302 Found'); header('phancap-file: ' . $img->name); header('Expires: ' . date('r', $img->getExpiryDate($options))); header('Location: ' . $img->getUrl()); } else { header('HTTP/1.0 200 OK'); header('phancap-file: ' . $img->name); header('Content-Type: ' . $img->getMimeType()); header('Content-Length: ' . filesize($img->getPath())); readfile($img->getPath()); } } catch (\Exception $e) { //FIXME: handle 404s and so properly //FIXME: send out error image if images are preferred header('HTTP/1.0 500 Internal Server error'); header('Content-type: text/plain'); echo $e->getMessage() . "\n"; exit(2); } ?> PNG  IHDRddJ,PLTEٟ pHYs  4IDAT8c`L? lP'?? phancap - website screenshot service

phancap - website screenshot service

Web service (API) to create website screenshots.

Self-hosted and written in PHP. Caching included.

phancap is useful for:

  • Show screenshots for websites in your bookmarking application
  • Archive a HTML page as PDF for later viewing

Features

  • Configurable browser size
  • Configurable screenshot size
  • Clip and full page rendering (full height)
  • JPG, PNG and PDF output (PDFs are searchable)
  • Authentication
  • Can run on a normal web server without GUI. See dependencies.

Note

phancap does not rely on a "real" browser. Currently cutycapt is utilized, which uses a pretty bare webkit to render the pages. Do not expect pixel-for-pixel identical rendering as your desktop browser.

Getting started

Basic setup

  1. Download the .phar file and put it onto your web server

  2. Open the phar file in your browser

    If you only see text beginning with <?php, you need to setup .phar file extension handling in your web server first.

  3. Click the "setup check" link

  4. Fix all errors that are reported

  5. Run phancap.phar/get.php?url=cweiske.de and see the screenshot

Advanced setup

With the basic setup, everyone may use your server to create website screenshots. You may want to change that or simply change some default settings.

  1. Create a config file phancap.phar.config.php
  2. Edit it; see the configuration options.

URL parameters

get.php supports the following parameters:

Browser parameters

url
Website URL
bwidth
Browser width (default: 1024)
bheight
Browser height (default: none)

Screenshot parameters

swidth
Screenshot width (default: none (no scaling))
sheight
Screenshot height (default: none)
sformat
Screenshot format (png, jpg, pdf, default: png)
smode
Screenshot mode (screen (4:3) or page (full website height))
smaxage

Maximum age of screenshot in seconds. ISO 8601 duration specifications accepted:

  • P1Y - 1 year
  • P2W - 2 weeks
  • P1D - 1 day
  • PT4H - 4 hours

The configuration file defines a minimum age that the user cannot undercut ($screenshotMinAge), as well as a default value ($screenshotMaxAge).

Authentication parameters

atimestamp
Time at which the request URL was generated (unix timestamp)
atoken
Access token (username)
asignature
Signature for the request. See the authentication section.

Configuration

phancap looks at several places for its configuration file:

  1. phancap.phar.config.php in the same directory as your phancap.phar file.
  2. /etc/phancap.php

Configuration variables

$cacheDir
Full file system path to image cache directory
$cacheDirUrl
Full URL to cache directory
$access

Credentials for access control

true to allow access to anyone, false to disable it completely. array of username - secret key combinations otherwise.

$cutycapt['parameters']

Additional command line parameters for cutycapt. Can be used to e.g. enable browser plugins:

$cutycapt['parameters'] = '--plugins=on';

$cutycapt['maxWaitTime']
Maximal time in seconds to wait for cutycapt to finish rendering. Defaults to 30 seconds.
$disableSetup
Disable setup.php which will leak file system paths
$redirect
Redirect to static image urls after generating them
$timestampmaxAge
How long a signature timestamp is considered valid. 2 days default.
$screenshotMaxAge

Cache time of downloaded screenshots.

When the file is as older than this, it gets re-created.

$screenshotMinAge

Minimum age of a screeshot. 1 hour default.

A user cannot set the max age parameter below it.

Authentication

Creating screenshots of websites is a resource intensive process. To prevent unauthorized access to the service, phancap supports authentication via a signature parameter similar to OAuth's oauth_signature.

Phancap's configuration file may contain a $access variable:

true
Everyone is allowed to access the service
false
Nobody is allowed to access the service
array

A list of usernames that are allowed to request screenshots, together with their secret keys (password):

$access = array(
   'user1' => 'secret1',
   'user2' => 'secret2',
)

The signature algorithm is as follows:

  1. Parameters atimestamp (current unix timestamp) and atoken (username) have to be added to the URL parameters
  2. URL parameters are normalized as described in OAuth Parameters Normalization:
    1. Sort parameters list by name
    2. Name and value are raw-url-encoded
    3. Name and value are concatenated with = as separator
    4. The resulting strings are concatenated with & as separator
  3. URL parameter string is used together with the secret key to create a HMAC-SHA1 digest
  4. Digest is appended to the URL as asignature

Example

Note

The docs/ directory contains an example PHP client implementation.

We want to create a screenshot of http://example.org/ in size 400x300, using the browser size of 1024x768:

http://example.org/phancap/get.php?swidth=400&sheight=300&url=http%3A%2F%2Fexample.org%2F&bwidth=1024&bheight=768

Phancap's config file contains:

$access = array(
    'user' => 'secret'
);

Our parameters are thus:

Name Value
swidth 400
sheight 300
url http://example.org/
bwidth 1024
bheight 768

At first, we need to add parameters atimestamp and atoken. atimestamp is the current unix timestamp. atoken is our user name: user.

Now the parameter list is sorted:

Name Value
atimestamp 1396353987
atoken user
bheight 768
bwidth 1024
sheight 300
swidth 400
url http://example.org/

The parameters are raw-url-encoded. The only value that changes is the url, it becomes http%3A%2F%2Fexample.org%2F.

Concatenating the name/value pairs leads to the following string:

atimestamp=1396353987&atoken=user&bheight=768&bwidth=1024&sheight=300&swidth=400&url=http%3A%2F%2Fexample.org%2F

Creating the HMAC digest with sha1, the calculated string and our key secret gives us the following string:

9a12eac5ff859f9306eaaf5a18b9a931fe10b89d

This is the signature; it gets appended to the URL as asignature parameter.

Dependencies

  • External tools:
  • Libraries (already included in the .phar):
    • PEAR's System.php

About phancap

License

phancap is licensed under the AGPL v3 or later.

Author

Written by Christian Weiske, cweiske@cweiske.de

Development

Releasing a new version

  1. Update ChangeLog
  2. Change version number in build.xml
  3. Run phing
  4. Deploy the new files in dist/
  5. Tag the new version in git
* @copyright 2014 Christian Weiske * @license http://www.gnu.org/licenses/agpl.html GNU AGPL v3 * @link http://cweiske.de/phancap.htm */ namespace phancap; header('HTTP/1.0 500 Internal Server Error'); if (file_exists(__DIR__ . '/../src/phancap/Autoloader.php')) { include_once __DIR__ . '/../src/phancap/Autoloader.php'; Autoloader::register(); } else { include_once 'phancap/Autoloader.php'; } header('HTTP/1.0 200 OK'); $options = new Options(); $config = new Config(); try { $config->load(); $options->setConfig($config); } catch (\Exception $e) { } ?> phancap

Web service to create website screenshots.

Create screenshot
access === false) { ?>
API is disabled
access !== true) { ?>
API requires authentication

Tools

API

The API is accessible at get.php.

Available URL parameters
options as $name => $option) { echo '' . '' . '' . '' . '' . ''; } ?>
Name Description Type Default
' . $name . '' . htmlspecialchars($option['title']) . '' . ( is_array($option['type']) ? ('One of: ' . implode(', ', $option['type']) . '') : str_replace('skip', ' ', $option['type']) ) . ' ' . $option['default'] . '

Ages can be given as ISO 8601 duration specification, for example:

P1Y
1 year
P2W
2 weeks
P1D
1 day
PT4H
4 hours

Complex request

h2 { margin-top: 3ex; } .footer { margin-top: 3ex; margin-bottom: 0px; border-top: 1px solid #DDD; color: #999; text-align: center; clear: both; } var { font-family: monospace; } /*! * Bootstrap v3.3.5 (http://getbootstrap.com) * Copyright 2011-2016 Twitter, Inc. * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE) */ /*! * Generated using the Bootstrap Customizer (http://getbootstrap.com/customize/?id=9a52f4868e9e9964593cf0e97f5373fb) * Config saved to config.json and https://gist.github.com/9a52f4868e9e9964593cf0e97f5373fb *//*! * Bootstrap v3.3.6 (http://getbootstrap.com) * Copyright 2011-2015 Twitter, Inc. * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE) */.btn-default,.btn-primary,.btn-success,.btn-info,.btn-warning,.btn-danger{text-shadow:0 -1px 0 rgba(0,0,0,0.2);-webkit-box-shadow:inset 0 1px 0 rgba(255,255,255,0.15),0 1px 1px rgba(0,0,0,0.075);box-shadow:inset 0 1px 0 rgba(255,255,255,0.15),0 1px 1px 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dd:after,.container:before,.container:after,.container-fluid:before,.container-fluid:after,.row:before,.row:after,.form-horizontal .form-group:before,.form-horizontal .form-group:after,.panel-body:before,.panel-body:after{content:" ";display:table}.clearfix:after,.dl-horizontal dd:after,.container:after,.container-fluid:after,.row:after,.form-horizontal .form-group:after,.panel-body:after{clear:both}.center-block{display:block;margin-left:auto;margin-right:auto}.pull-right{float:right !important}.pull-left{float:left !important}.hide{display:none !important}.show{display:block !important}.invisible{visibility:hidden}.text-hide{font:0/0 a;color:transparent;text-shadow:none;background-color:transparent;border:0}.hidden{display:none !important}.affix{position:fixed} * @author Stig Bakken * @author Tomas V.V.Cox * @author Greg Beaver * @copyright 1997-2010 The Authors * @license http://opensource.org/licenses/bsd-license.php New BSD License * @version CVS: $Id: PEAR.php 313023 2011-07-06 19:17:11Z dufuz $ * @link http://pear.php.net/package/PEAR * @since File available since Release 0.1 */ /**#@+ * ERROR constants */ define('PEAR_ERROR_RETURN', 1); define('PEAR_ERROR_PRINT', 2); define('PEAR_ERROR_TRIGGER', 4); define('PEAR_ERROR_DIE', 8); define('PEAR_ERROR_CALLBACK', 16); /** * WARNING: obsolete * @deprecated */ define('PEAR_ERROR_EXCEPTION', 32); /**#@-*/ define('PEAR_ZE2', (function_exists('version_compare') && version_compare(zend_version(), "2-dev", "ge"))); if (substr(PHP_OS, 0, 3) == 'WIN') { define('OS_WINDOWS', true); define('OS_UNIX', false); define('PEAR_OS', 'Windows'); } else { define('OS_WINDOWS', false); define('OS_UNIX', true); define('PEAR_OS', 'Unix'); // blatant assumption } $GLOBALS['_PEAR_default_error_mode'] = PEAR_ERROR_RETURN; $GLOBALS['_PEAR_default_error_options'] = E_USER_NOTICE; $GLOBALS['_PEAR_destructor_object_list'] = array(); $GLOBALS['_PEAR_shutdown_funcs'] = array(); $GLOBALS['_PEAR_error_handler_stack'] = array(); @ini_set('track_errors', true); /** * Base class for other PEAR classes. Provides rudimentary * emulation of destructors. * * If you want a destructor in your class, inherit PEAR and make a * destructor method called _yourclassname (same name as the * constructor, but with a "_" prefix). Also, in your constructor you * have to call the PEAR constructor: $this->PEAR();. * The destructor method will be called without parameters. Note that * at in some SAPI implementations (such as Apache), any output during * the request shutdown (in which destructors are called) seems to be * discarded. If you need to get any debug information from your * destructor, use error_log(), syslog() or something similar. * * IMPORTANT! To use the emulated destructors you need to create the * objects by reference: $obj =& new PEAR_child; * * @category pear * @package PEAR * @author Stig Bakken * @author Tomas V.V. Cox * @author Greg Beaver * @copyright 1997-2006 The PHP Group * @license http://opensource.org/licenses/bsd-license.php New BSD License * @version Release: 1.9.4 * @link http://pear.php.net/package/PEAR * @see PEAR_Error * @since Class available since PHP 4.0.2 * @link http://pear.php.net/manual/en/core.pear.php#core.pear.pear */ class PEAR { /** * Whether to enable internal debug messages. * * @var bool * @access private */ var $_debug = false; /** * Default error mode for this object. * * @var int * @access private */ var $_default_error_mode = null; /** * Default error options used for this object when error mode * is PEAR_ERROR_TRIGGER. * * @var int * @access private */ var $_default_error_options = null; /** * Default error handler (callback) for this object, if error mode is * PEAR_ERROR_CALLBACK. * * @var string * @access private */ var $_default_error_handler = ''; /** * Which class to use for error objects. * * @var string * @access private */ var $_error_class = 'PEAR_Error'; /** * An array of expected errors. * * @var array * @access private */ var $_expected_errors = array(); /** * Constructor. Registers this object in * $_PEAR_destructor_object_list for destructor emulation if a * destructor object exists. * * @param string $error_class (optional) which class to use for * error objects, defaults to PEAR_Error. * @access public * @return void */ function PEAR($error_class = null) { $classname = strtolower(get_class($this)); if ($this->_debug) { print "PEAR constructor called, class=$classname\n"; } if ($error_class !== null) { $this->_error_class = $error_class; } while ($classname && strcasecmp($classname, "pear")) { $destructor = "_$classname"; if (method_exists($this, $destructor)) { global $_PEAR_destructor_object_list; $_PEAR_destructor_object_list[] = &$this; if (!isset($GLOBALS['_PEAR_SHUTDOWN_REGISTERED'])) { register_shutdown_function("_PEAR_call_destructors"); $GLOBALS['_PEAR_SHUTDOWN_REGISTERED'] = true; } break; } else { $classname = get_parent_class($classname); } } } /** * Destructor (the emulated type of...). Does nothing right now, * but is included for forward compatibility, so subclass * destructors should always call it. * * See the note in the class desciption about output from * destructors. * * @access public * @return void */ function _PEAR() { if ($this->_debug) { printf("PEAR destructor called, class=%s\n", strtolower(get_class($this))); } } /** * If you have a class that's mostly/entirely static, and you need static * properties, you can use this method to simulate them. Eg. in your method(s) * do this: $myVar = &PEAR::getStaticProperty('myclass', 'myVar'); * You MUST use a reference, or they will not persist! * * @access public * @param string $class The calling classname, to prevent clashes * @param string $var The variable to retrieve. * @return mixed A reference to the variable. If not set it will be * auto initialised to NULL. */ function &getStaticProperty($class, $var) { static $properties; if (!isset($properties[$class])) { $properties[$class] = array(); } if (!array_key_exists($var, $properties[$class])) { $properties[$class][$var] = null; } return $properties[$class][$var]; } /** * Use this function to register a shutdown method for static * classes. * * @access public * @param mixed $func The function name (or array of class/method) to call * @param mixed $args The arguments to pass to the function * @return void */ function registerShutdownFunc($func, $args = array()) { // if we are called statically, there is a potential // that no shutdown func is registered. Bug #6445 if (!isset($GLOBALS['_PEAR_SHUTDOWN_REGISTERED'])) { register_shutdown_function("_PEAR_call_destructors"); $GLOBALS['_PEAR_SHUTDOWN_REGISTERED'] = true; } $GLOBALS['_PEAR_shutdown_funcs'][] = array($func, $args); } /** * Tell whether a value is a PEAR error. * * @param mixed $data the value to test * @param int $code if $data is an error object, return true * only if $code is a string and * $obj->getMessage() == $code or * $code is an integer and $obj->getCode() == $code * @access public * @return bool true if parameter is an error */ function isError($data, $code = null) { if (!is_a($data, 'PEAR_Error')) { return false; } if (is_null($code)) { return true; } elseif (is_string($code)) { return $data->getMessage() == $code; } return $data->getCode() == $code; } /** * Sets how errors generated by this object should be handled. * Can be invoked both in objects and statically. If called * statically, setErrorHandling sets the default behaviour for all * PEAR objects. If called in an object, setErrorHandling sets * the default behaviour for that object. * * @param int $mode * One of PEAR_ERROR_RETURN, PEAR_ERROR_PRINT, * PEAR_ERROR_TRIGGER, PEAR_ERROR_DIE, * PEAR_ERROR_CALLBACK or PEAR_ERROR_EXCEPTION. * * @param mixed $options * When $mode is PEAR_ERROR_TRIGGER, this is the error level (one * of E_USER_NOTICE, E_USER_WARNING or E_USER_ERROR). * * When $mode is PEAR_ERROR_CALLBACK, this parameter is expected * to be the callback function or method. A callback * function is a string with the name of the function, a * callback method is an array of two elements: the element * at index 0 is the object, and the element at index 1 is * the name of the method to call in the object. * * When $mode is PEAR_ERROR_PRINT or PEAR_ERROR_DIE, this is * a printf format string used when printing the error * message. * * @access public * @return void * @see PEAR_ERROR_RETURN * @see PEAR_ERROR_PRINT * @see PEAR_ERROR_TRIGGER * @see PEAR_ERROR_DIE * @see PEAR_ERROR_CALLBACK * @see PEAR_ERROR_EXCEPTION * * @since PHP 4.0.5 */ function setErrorHandling($mode = null, $options = null) { if (isset($this) && is_a($this, 'PEAR')) { $setmode = &$this->_default_error_mode; $setoptions = &$this->_default_error_options; } else { $setmode = &$GLOBALS['_PEAR_default_error_mode']; $setoptions = &$GLOBALS['_PEAR_default_error_options']; } switch ($mode) { case PEAR_ERROR_EXCEPTION: case PEAR_ERROR_RETURN: case PEAR_ERROR_PRINT: case PEAR_ERROR_TRIGGER: case PEAR_ERROR_DIE: case null: $setmode = $mode; $setoptions = $options; break; case PEAR_ERROR_CALLBACK: $setmode = $mode; // class/object method callback if (is_callable($options)) { $setoptions = $options; } else { trigger_error("invalid error callback", E_USER_WARNING); } break; default: trigger_error("invalid error mode", E_USER_WARNING); break; } } /** * This method is used to tell which errors you expect to get. * Expected errors are always returned with error mode * PEAR_ERROR_RETURN. Expected error codes are stored in a stack, * and this method pushes a new element onto it. The list of * expected errors are in effect until they are popped off the * stack with the popExpect() method. * * Note that this method can not be called statically * * @param mixed $code a single error code or an array of error codes to expect * * @return int the new depth of the "expected errors" stack * @access public */ function expectError($code = '*') { if (is_array($code)) { array_push($this->_expected_errors, $code); } else { array_push($this->_expected_errors, array($code)); } return count($this->_expected_errors); } /** * This method pops one element off the expected error codes * stack. * * @return array the list of error codes that were popped */ function popExpect() { return array_pop($this->_expected_errors); } /** * This method checks unsets an error code if available * * @param mixed error code * @return bool true if the error code was unset, false otherwise * @access private * @since PHP 4.3.0 */ function _checkDelExpect($error_code) { $deleted = false; foreach ($this->_expected_errors as $key => $error_array) { if (in_array($error_code, $error_array)) { unset($this->_expected_errors[$key][array_search($error_code, $error_array)]); $deleted = true; } // clean up empty arrays if (0 == count($this->_expected_errors[$key])) { unset($this->_expected_errors[$key]); } } return $deleted; } /** * This method deletes all occurences of the specified element from * the expected error codes stack. * * @param mixed $error_code error code that should be deleted * @return mixed list of error codes that were deleted or error * @access public * @since PHP 4.3.0 */ function delExpect($error_code) { $deleted = false; if ((is_array($error_code) && (0 != count($error_code)))) { // $error_code is a non-empty array here; we walk through it trying // to unset all values foreach ($error_code as $key => $error) { $deleted = $this->_checkDelExpect($error) ? true : false; } return $deleted ? true : PEAR::raiseError("The expected error you submitted does not exist"); // IMPROVE ME } elseif (!empty($error_code)) { // $error_code comes alone, trying to unset it if ($this->_checkDelExpect($error_code)) { return true; } return PEAR::raiseError("The expected error you submitted does not exist"); // IMPROVE ME } // $error_code is empty return PEAR::raiseError("The expected error you submitted is empty"); // IMPROVE ME } /** * This method is a wrapper that returns an instance of the * configured error class with this object's default error * handling applied. If the $mode and $options parameters are not * specified, the object's defaults are used. * * @param mixed $message a text error message or a PEAR error object * * @param int $code a numeric error code (it is up to your class * to define these if you want to use codes) * * @param int $mode One of PEAR_ERROR_RETURN, PEAR_ERROR_PRINT, * PEAR_ERROR_TRIGGER, PEAR_ERROR_DIE, * PEAR_ERROR_CALLBACK, PEAR_ERROR_EXCEPTION. * * @param mixed $options If $mode is PEAR_ERROR_TRIGGER, this parameter * specifies the PHP-internal error level (one of * E_USER_NOTICE, E_USER_WARNING or E_USER_ERROR). * If $mode is PEAR_ERROR_CALLBACK, this * parameter specifies the callback function or * method. In other error modes this parameter * is ignored. * * @param string $userinfo If you need to pass along for example debug * information, this parameter is meant for that. * * @param string $error_class The returned error object will be * instantiated from this class, if specified. * * @param bool $skipmsg If true, raiseError will only pass error codes, * the error message parameter will be dropped. * * @access public * @return object a PEAR error object * @see PEAR::setErrorHandling * @since PHP 4.0.5 */ function &raiseError($message = null, $code = null, $mode = null, $options = null, $userinfo = null, $error_class = null, $skipmsg = false) { // The error is yet a PEAR error object if (is_object($message)) { $code = $message->getCode(); $userinfo = $message->getUserInfo(); $error_class = $message->getType(); $message->error_message_prefix = ''; $message = $message->getMessage(); } if ( isset($this) && isset($this->_expected_errors) && count($this->_expected_errors) > 0 && count($exp = end($this->_expected_errors)) ) { if ($exp[0] == "*" || (is_int(reset($exp)) && in_array($code, $exp)) || (is_string(reset($exp)) && in_array($message, $exp)) ) { $mode = PEAR_ERROR_RETURN; } } // No mode given, try global ones if ($mode === null) { // Class error handler if (isset($this) && isset($this->_default_error_mode)) { $mode = $this->_default_error_mode; $options = $this->_default_error_options; // Global error handler } elseif (isset($GLOBALS['_PEAR_default_error_mode'])) { $mode = $GLOBALS['_PEAR_default_error_mode']; $options = $GLOBALS['_PEAR_default_error_options']; } } if ($error_class !== null) { $ec = $error_class; } elseif (isset($this) && isset($this->_error_class)) { $ec = $this->_error_class; } else { $ec = 'PEAR_Error'; } if (intval(PHP_VERSION) < 5) { // little non-eval hack to fix bug #12147 include 'PEAR/FixPHP5PEARWarnings.php'; return $a; } if ($skipmsg) { $a = new $ec($code, $mode, $options, $userinfo); } else { $a = new $ec($message, $code, $mode, $options, $userinfo); } return $a; } /** * Simpler form of raiseError with fewer options. In most cases * message, code and userinfo are enough. * * @param mixed $message a text error message or a PEAR error object * * @param int $code a numeric error code (it is up to your class * to define these if you want to use codes) * * @param string $userinfo If you need to pass along for example debug * information, this parameter is meant for that. * * @access public * @return object a PEAR error object * @see PEAR::raiseError */ function &throwError($message = null, $code = null, $userinfo = null) { if (isset($this) && is_a($this, 'PEAR')) { $a = &$this->raiseError($message, $code, null, null, $userinfo); return $a; } $a = &PEAR::raiseError($message, $code, null, null, $userinfo); return $a; } function staticPushErrorHandling($mode, $options = null) { $stack = &$GLOBALS['_PEAR_error_handler_stack']; $def_mode = &$GLOBALS['_PEAR_default_error_mode']; $def_options = &$GLOBALS['_PEAR_default_error_options']; $stack[] = array($def_mode, $def_options); switch ($mode) { case PEAR_ERROR_EXCEPTION: case PEAR_ERROR_RETURN: case PEAR_ERROR_PRINT: case PEAR_ERROR_TRIGGER: case PEAR_ERROR_DIE: case null: $def_mode = $mode; $def_options = $options; break; case PEAR_ERROR_CALLBACK: $def_mode = $mode; // class/object method callback if (is_callable($options)) { $def_options = $options; } else { trigger_error("invalid error callback", E_USER_WARNING); } break; default: trigger_error("invalid error mode", E_USER_WARNING); break; } $stack[] = array($mode, $options); return true; } function staticPopErrorHandling() { $stack = &$GLOBALS['_PEAR_error_handler_stack']; $setmode = &$GLOBALS['_PEAR_default_error_mode']; $setoptions = &$GLOBALS['_PEAR_default_error_options']; array_pop($stack); list($mode, $options) = $stack[sizeof($stack) - 1]; array_pop($stack); switch ($mode) { case PEAR_ERROR_EXCEPTION: case PEAR_ERROR_RETURN: case PEAR_ERROR_PRINT: case PEAR_ERROR_TRIGGER: case PEAR_ERROR_DIE: case null: $setmode = $mode; $setoptions = $options; break; case PEAR_ERROR_CALLBACK: $setmode = $mode; // class/object method callback if (is_callable($options)) { $setoptions = $options; } else { trigger_error("invalid error callback", E_USER_WARNING); } break; default: trigger_error("invalid error mode", E_USER_WARNING); break; } return true; } /** * Push a new error handler on top of the error handler options stack. With this * you can easily override the actual error handler for some code and restore * it later with popErrorHandling. * * @param mixed $mode (same as setErrorHandling) * @param mixed $options (same as setErrorHandling) * * @return bool Always true * * @see PEAR::setErrorHandling */ function pushErrorHandling($mode, $options = null) { $stack = &$GLOBALS['_PEAR_error_handler_stack']; if (isset($this) && is_a($this, 'PEAR')) { $def_mode = &$this->_default_error_mode; $def_options = &$this->_default_error_options; } else { $def_mode = &$GLOBALS['_PEAR_default_error_mode']; $def_options = &$GLOBALS['_PEAR_default_error_options']; } $stack[] = array($def_mode, $def_options); if (isset($this) && is_a($this, 'PEAR')) { $this->setErrorHandling($mode, $options); } else { PEAR::setErrorHandling($mode, $options); } $stack[] = array($mode, $options); return true; } /** * Pop the last error handler used * * @return bool Always true * * @see PEAR::pushErrorHandling */ function popErrorHandling() { $stack = &$GLOBALS['_PEAR_error_handler_stack']; array_pop($stack); list($mode, $options) = $stack[sizeof($stack) - 1]; array_pop($stack); if (isset($this) && is_a($this, 'PEAR')) { $this->setErrorHandling($mode, $options); } else { PEAR::setErrorHandling($mode, $options); } return true; } /** * OS independant PHP extension load. Remember to take care * on the correct extension name for case sensitive OSes. * * @param string $ext The extension name * @return bool Success or not on the dl() call */ function loadExtension($ext) { if (extension_loaded($ext)) { return true; } // if either returns true dl() will produce a FATAL error, stop that if ( function_exists('dl') === false || ini_get('enable_dl') != 1 || ini_get('safe_mode') == 1 ) { return false; } if (OS_WINDOWS) { $suffix = '.dll'; } elseif (PHP_OS == 'HP-UX') { $suffix = '.sl'; } elseif (PHP_OS == 'AIX') { $suffix = '.a'; } elseif (PHP_OS == 'OSX') { $suffix = '.bundle'; } else { $suffix = '.so'; } return @dl('php_'.$ext.$suffix) || @dl($ext.$suffix); } } if (PEAR_ZE2) { include_once 'PEAR5.php'; } function _PEAR_call_destructors() { global $_PEAR_destructor_object_list; if (is_array($_PEAR_destructor_object_list) && sizeof($_PEAR_destructor_object_list)) { reset($_PEAR_destructor_object_list); if (PEAR_ZE2) { $destructLifoExists = PEAR5::getStaticProperty('PEAR', 'destructlifo'); } else { $destructLifoExists = PEAR::getStaticProperty('PEAR', 'destructlifo'); } if ($destructLifoExists) { $_PEAR_destructor_object_list = array_reverse($_PEAR_destructor_object_list); } while (list($k, $objref) = each($_PEAR_destructor_object_list)) { $classname = get_class($objref); while ($classname) { $destructor = "_$classname"; if (method_exists($objref, $destructor)) { $objref->$destructor(); break; } else { $classname = get_parent_class($classname); } } } // Empty the object list to ensure that destructors are // not called more than once. $_PEAR_destructor_object_list = array(); } // Now call the shutdown functions if ( isset($GLOBALS['_PEAR_shutdown_funcs']) && is_array($GLOBALS['_PEAR_shutdown_funcs']) && !empty($GLOBALS['_PEAR_shutdown_funcs']) ) { foreach ($GLOBALS['_PEAR_shutdown_funcs'] as $value) { call_user_func_array($value[0], $value[1]); } } } /** * Standard PEAR error class for PHP 4 * * This class is supserseded by {@link PEAR_Exception} in PHP 5 * * @category pear * @package PEAR * @author Stig Bakken * @author Tomas V.V. Cox * @author Gregory Beaver * @copyright 1997-2006 The PHP Group * @license http://opensource.org/licenses/bsd-license.php New BSD License * @version Release: 1.9.4 * @link http://pear.php.net/manual/en/core.pear.pear-error.php * @see PEAR::raiseError(), PEAR::throwError() * @since Class available since PHP 4.0.2 */ class PEAR_Error { var $error_message_prefix = ''; var $mode = PEAR_ERROR_RETURN; var $level = E_USER_NOTICE; var $code = -1; var $message = ''; var $userinfo = ''; var $backtrace = null; /** * PEAR_Error constructor * * @param string $message message * * @param int $code (optional) error code * * @param int $mode (optional) error mode, one of: PEAR_ERROR_RETURN, * PEAR_ERROR_PRINT, PEAR_ERROR_DIE, PEAR_ERROR_TRIGGER, * PEAR_ERROR_CALLBACK or PEAR_ERROR_EXCEPTION * * @param mixed $options (optional) error level, _OR_ in the case of * PEAR_ERROR_CALLBACK, the callback function or object/method * tuple. * * @param string $userinfo (optional) additional user/debug info * * @access public * */ function PEAR_Error($message = 'unknown error', $code = null, $mode = null, $options = null, $userinfo = null) { if ($mode === null) { $mode = PEAR_ERROR_RETURN; } $this->message = $message; $this->code = $code; $this->mode = $mode; $this->userinfo = $userinfo; if (PEAR_ZE2) { $skiptrace = PEAR5::getStaticProperty('PEAR_Error', 'skiptrace'); } else { $skiptrace = PEAR::getStaticProperty('PEAR_Error', 'skiptrace'); } if (!$skiptrace) { $this->backtrace = debug_backtrace(); if (isset($this->backtrace[0]) && isset($this->backtrace[0]['object'])) { unset($this->backtrace[0]['object']); } } if ($mode & PEAR_ERROR_CALLBACK) { $this->level = E_USER_NOTICE; $this->callback = $options; } else { if ($options === null) { $options = E_USER_NOTICE; } $this->level = $options; $this->callback = null; } if ($this->mode & PEAR_ERROR_PRINT) { if (is_null($options) || is_int($options)) { $format = "%s"; } else { $format = $options; } printf($format, $this->getMessage()); } if ($this->mode & PEAR_ERROR_TRIGGER) { trigger_error($this->getMessage(), $this->level); } if ($this->mode & PEAR_ERROR_DIE) { $msg = $this->getMessage(); if (is_null($options) || is_int($options)) { $format = "%s"; if (substr($msg, -1) != "\n") { $msg .= "\n"; } } else { $format = $options; } die(sprintf($format, $msg)); } if ($this->mode & PEAR_ERROR_CALLBACK && is_callable($this->callback)) { call_user_func($this->callback, $this); } if ($this->mode & PEAR_ERROR_EXCEPTION) { trigger_error("PEAR_ERROR_EXCEPTION is obsolete, use class PEAR_Exception for exceptions", E_USER_WARNING); eval('$e = new Exception($this->message, $this->code);throw($e);'); } } /** * Get the error mode from an error object. * * @return int error mode * @access public */ function getMode() { return $this->mode; } /** * Get the callback function/method from an error object. * * @return mixed callback function or object/method array * @access public */ function getCallback() { return $this->callback; } /** * Get the error message from an error object. * * @return string full error message * @access public */ function getMessage() { return ($this->error_message_prefix . $this->message); } /** * Get error code from an error object * * @return int error code * @access public */ function getCode() { return $this->code; } /** * Get the name of this error/exception. * * @return string error/exception name (type) * @access public */ function getType() { return get_class($this); } /** * Get additional user-supplied information. * * @return string user-supplied information * @access public */ function getUserInfo() { return $this->userinfo; } /** * Get additional debug information supplied by the application. * * @return string debug information * @access public */ function getDebugInfo() { return $this->getUserInfo(); } /** * Get the call backtrace from where the error was generated. * Supported with PHP 4.3.0 or newer. * * @param int $frame (optional) what frame to fetch * @return array Backtrace, or NULL if not available. * @access public */ function getBacktrace($frame = null) { if (defined('PEAR_IGNORE_BACKTRACE')) { return null; } if ($frame === null) { return $this->backtrace; } return $this->backtrace[$frame]; } function addUserInfo($info) { if (empty($this->userinfo)) { $this->userinfo = $info; } else { $this->userinfo .= " ** $info"; } } function __toString() { return $this->getMessage(); } /** * Make a string representation of this object. * * @return string a string with an object summary * @access public */ function toString() { $modes = array(); $levels = array(E_USER_NOTICE => 'notice', E_USER_WARNING => 'warning', E_USER_ERROR => 'error'); if ($this->mode & PEAR_ERROR_CALLBACK) { if (is_array($this->callback)) { $callback = (is_object($this->callback[0]) ? strtolower(get_class($this->callback[0])) : $this->callback[0]) . '::' . $this->callback[1]; } else { $callback = $this->callback; } return sprintf('[%s: message="%s" code=%d mode=callback '. 'callback=%s prefix="%s" info="%s"]', strtolower(get_class($this)), $this->message, $this->code, $callback, $this->error_message_prefix, $this->userinfo); } if ($this->mode & PEAR_ERROR_PRINT) { $modes[] = 'print'; } if ($this->mode & PEAR_ERROR_TRIGGER) { $modes[] = 'trigger'; } if ($this->mode & PEAR_ERROR_DIE) { $modes[] = 'die'; } if ($this->mode & PEAR_ERROR_RETURN) { $modes[] = 'return'; } return sprintf('[%s: message="%s" code=%d mode=%s level=%s '. 'prefix="%s" info="%s"]', strtolower(get_class($this)), $this->message, $this->code, implode("|", $modes), $levels[$this->level], $this->error_message_prefix, $this->userinfo); } } /* * Local Variables: * mode: php * tab-width: 4 * c-basic-offset: 4 * End: */ * @copyright 1997-2009 The Authors * @license http://opensource.org/licenses/bsd-license.php New BSD License * @version CVS: $Id: System.php 313024 2011-07-06 19:51:24Z dufuz $ * @link http://pear.php.net/package/PEAR * @since File available since Release 0.1 */ /** * base class */ require_once 'PEAR.php'; require_once 'Console/Getopt.php'; $GLOBALS['_System_temp_files'] = array(); /** * System offers cross plattform compatible system functions * * Static functions for different operations. Should work under * Unix and Windows. The names and usage has been taken from its respectively * GNU commands. The functions will return (bool) false on error and will * trigger the error with the PHP trigger_error() function (you can silence * the error by prefixing a '@' sign after the function call, but this * is not recommended practice. Instead use an error handler with * {@link set_error_handler()}). * * Documentation on this class you can find in: * http://pear.php.net/manual/ * * Example usage: * if (!@System::rm('-r file1 dir1')) { * print "could not delete file1 or dir1"; * } * * In case you need to to pass file names with spaces, * pass the params as an array: * * System::rm(array('-r', $file1, $dir1)); * * @category pear * @package System * @author Tomas V.V. Cox * @copyright 1997-2006 The PHP Group * @license http://opensource.org/licenses/bsd-license.php New BSD License * @version Release: 1.9.4 * @link http://pear.php.net/package/PEAR * @since Class available since Release 0.1 * @static */ class System { /** * returns the commandline arguments of a function * * @param string $argv the commandline * @param string $short_options the allowed option short-tags * @param string $long_options the allowed option long-tags * @return array the given options and there values * @static * @access private */ function _parseArgs($argv, $short_options, $long_options = null) { if (!is_array($argv) && $argv !== null) { // Find all items, quoted or otherwise preg_match_all("/(?:[\"'])(.*?)(?:['\"])|([^\s]+)/", $argv, $av); $argv = $av[1]; foreach ($av[2] as $k => $a) { if (empty($a)) { continue; } $argv[$k] = trim($a) ; } } return Console_Getopt::getopt2($argv, $short_options, $long_options); } /** * Output errors with PHP trigger_error(). You can silence the errors * with prefixing a "@" sign to the function call: @System::mkdir(..); * * @param mixed $error a PEAR error or a string with the error message * @return bool false * @static * @access private */ function raiseError($error) { if (PEAR::isError($error)) { $error = $error->getMessage(); } trigger_error($error, E_USER_WARNING); return false; } /** * Creates a nested array representing the structure of a directory * * System::_dirToStruct('dir1', 0) => * Array * ( * [dirs] => Array * ( * [0] => dir1 * ) * * [files] => Array * ( * [0] => dir1/file2 * [1] => dir1/file3 * ) * ) * @param string $sPath Name of the directory * @param integer $maxinst max. deep of the lookup * @param integer $aktinst starting deep of the lookup * @param bool $silent if true, do not emit errors. * @return array the structure of the dir * @static * @access private */ function _dirToStruct($sPath, $maxinst, $aktinst = 0, $silent = false) { $struct = array('dirs' => array(), 'files' => array()); if (($dir = @opendir($sPath)) === false) { if (!$silent) { System::raiseError("Could not open dir $sPath"); } return $struct; // XXX could not open error } $struct['dirs'][] = $sPath = realpath($sPath); // XXX don't add if '.' or '..' ? $list = array(); while (false !== ($file = readdir($dir))) { if ($file != '.' && $file != '..') { $list[] = $file; } } closedir($dir); natsort($list); if ($aktinst < $maxinst || $maxinst == 0) { foreach ($list as $val) { $path = $sPath . DIRECTORY_SEPARATOR . $val; if (is_dir($path) && !is_link($path)) { $tmp = System::_dirToStruct($path, $maxinst, $aktinst+1, $silent); $struct = array_merge_recursive($struct, $tmp); } else { $struct['files'][] = $path; } } } return $struct; } /** * Creates a nested array representing the structure of a directory and files * * @param array $files Array listing files and dirs * @return array * @static * @see System::_dirToStruct() */ function _multipleToStruct($files) { $struct = array('dirs' => array(), 'files' => array()); settype($files, 'array'); foreach ($files as $file) { if (is_dir($file) && !is_link($file)) { $tmp = System::_dirToStruct($file, 0); $struct = array_merge_recursive($tmp, $struct); } else { if (!in_array($file, $struct['files'])) { $struct['files'][] = $file; } } } return $struct; } /** * The rm command for removing files. * Supports multiple files and dirs and also recursive deletes * * @param string $args the arguments for rm * @return mixed PEAR_Error or true for success * @static * @access public */ function rm($args) { $opts = System::_parseArgs($args, 'rf'); // "f" does nothing but I like it :-) if (PEAR::isError($opts)) { return System::raiseError($opts); } foreach ($opts[0] as $opt) { if ($opt[0] == 'r') { $do_recursive = true; } } $ret = true; if (isset($do_recursive)) { $struct = System::_multipleToStruct($opts[1]); foreach ($struct['files'] as $file) { if (!@unlink($file)) { $ret = false; } } rsort($struct['dirs']); foreach ($struct['dirs'] as $dir) { if (!@rmdir($dir)) { $ret = false; } } } else { foreach ($opts[1] as $file) { $delete = (is_dir($file)) ? 'rmdir' : 'unlink'; if (!@$delete($file)) { $ret = false; } } } return $ret; } /** * Make directories. * * The -p option will create parent directories * @param string $args the name of the director(y|ies) to create * @return bool True for success * @static * @access public */ function mkDir($args) { $opts = System::_parseArgs($args, 'pm:'); if (PEAR::isError($opts)) { return System::raiseError($opts); } $mode = 0777; // default mode foreach ($opts[0] as $opt) { if ($opt[0] == 'p') { $create_parents = true; } elseif ($opt[0] == 'm') { // if the mode is clearly an octal number (starts with 0) // convert it to decimal if (strlen($opt[1]) && $opt[1]{0} == '0') { $opt[1] = octdec($opt[1]); } else { // convert to int $opt[1] += 0; } $mode = $opt[1]; } } $ret = true; if (isset($create_parents)) { foreach ($opts[1] as $dir) { $dirstack = array(); while ((!file_exists($dir) || !is_dir($dir)) && $dir != DIRECTORY_SEPARATOR) { array_unshift($dirstack, $dir); $dir = dirname($dir); } while ($newdir = array_shift($dirstack)) { if (!is_writeable(dirname($newdir))) { $ret = false; break; } if (!mkdir($newdir, $mode)) { $ret = false; } } } } else { foreach($opts[1] as $dir) { if ((@file_exists($dir) || !is_dir($dir)) && !mkdir($dir, $mode)) { $ret = false; } } } return $ret; } /** * Concatenate files * * Usage: * 1) $var = System::cat('sample.txt test.txt'); * 2) System::cat('sample.txt test.txt > final.txt'); * 3) System::cat('sample.txt test.txt >> final.txt'); * * Note: as the class use fopen, urls should work also (test that) * * @param string $args the arguments * @return boolean true on success * @static * @access public */ function &cat($args) { $ret = null; $files = array(); if (!is_array($args)) { $args = preg_split('/\s+/', $args, -1, PREG_SPLIT_NO_EMPTY); } $count_args = count($args); for ($i = 0; $i < $count_args; $i++) { if ($args[$i] == '>') { $mode = 'wb'; $outputfile = $args[$i+1]; break; } elseif ($args[$i] == '>>') { $mode = 'ab+'; $outputfile = $args[$i+1]; break; } else { $files[] = $args[$i]; } } $outputfd = false; if (isset($mode)) { if (!$outputfd = fopen($outputfile, $mode)) { $err = System::raiseError("Could not open $outputfile"); return $err; } $ret = true; } foreach ($files as $file) { if (!$fd = fopen($file, 'r')) { System::raiseError("Could not open $file"); continue; } while ($cont = fread($fd, 2048)) { if (is_resource($outputfd)) { fwrite($outputfd, $cont); } else { $ret .= $cont; } } fclose($fd); } if (is_resource($outputfd)) { fclose($outputfd); } return $ret; } /** * Creates temporary files or directories. This function will remove * the created files when the scripts finish its execution. * * Usage: * 1) $tempfile = System::mktemp("prefix"); * 2) $tempdir = System::mktemp("-d prefix"); * 3) $tempfile = System::mktemp(); * 4) $tempfile = System::mktemp("-t /var/tmp prefix"); * * prefix -> The string that will be prepended to the temp name * (defaults to "tmp"). * -d -> A temporary dir will be created instead of a file. * -t -> The target dir where the temporary (file|dir) will be created. If * this param is missing by default the env vars TMP on Windows or * TMPDIR in Unix will be used. If these vars are also missing * c:\windows\temp or /tmp will be used. * * @param string $args The arguments * @return mixed the full path of the created (file|dir) or false * @see System::tmpdir() * @static * @access public */ function mktemp($args = null) { static $first_time = true; $opts = System::_parseArgs($args, 't:d'); if (PEAR::isError($opts)) { return System::raiseError($opts); } foreach ($opts[0] as $opt) { if ($opt[0] == 'd') { $tmp_is_dir = true; } elseif ($opt[0] == 't') { $tmpdir = $opt[1]; } } $prefix = (isset($opts[1][0])) ? $opts[1][0] : 'tmp'; if (!isset($tmpdir)) { $tmpdir = System::tmpdir(); } if (!System::mkDir(array('-p', $tmpdir))) { return false; } $tmp = tempnam($tmpdir, $prefix); if (isset($tmp_is_dir)) { unlink($tmp); // be careful possible race condition here if (!mkdir($tmp, 0700)) { return System::raiseError("Unable to create temporary directory $tmpdir"); } } $GLOBALS['_System_temp_files'][] = $tmp; if (isset($tmp_is_dir)) { //$GLOBALS['_System_temp_files'][] = dirname($tmp); } if ($first_time) { PEAR::registerShutdownFunc(array('System', '_removeTmpFiles')); $first_time = false; } return $tmp; } /** * Remove temporary files created my mkTemp. This function is executed * at script shutdown time * * @static * @access private */ function _removeTmpFiles() { if (count($GLOBALS['_System_temp_files'])) { $delete = $GLOBALS['_System_temp_files']; array_unshift($delete, '-r'); System::rm($delete); $GLOBALS['_System_temp_files'] = array(); } } /** * Get the path of the temporal directory set in the system * by looking in its environments variables. * Note: php.ini-recommended removes the "E" from the variables_order setting, * making unavaible the $_ENV array, that s why we do tests with _ENV * * @static * @return string The temporary directory on the system */ function tmpdir() { if (OS_WINDOWS) { if ($var = isset($_ENV['TMP']) ? $_ENV['TMP'] : getenv('TMP')) { return $var; } if ($var = isset($_ENV['TEMP']) ? $_ENV['TEMP'] : getenv('TEMP')) { return $var; } if ($var = isset($_ENV['USERPROFILE']) ? $_ENV['USERPROFILE'] : getenv('USERPROFILE')) { return $var; } if ($var = isset($_ENV['windir']) ? $_ENV['windir'] : getenv('windir')) { return $var; } return getenv('SystemRoot') . '\temp'; } if ($var = isset($_ENV['TMPDIR']) ? $_ENV['TMPDIR'] : getenv('TMPDIR')) { return $var; } return realpath('/tmp'); } /** * The "which" command (show the full path of a command) * * @param string $program The command to search for * @param mixed $fallback Value to return if $program is not found * * @return mixed A string with the full path or false if not found * @static * @author Stig Bakken */ function which($program, $fallback = false) { // enforce API if (!is_string($program) || '' == $program) { return $fallback; } // full path given if (basename($program) != $program) { $path_elements[] = dirname($program); $program = basename($program); } else { // Honor safe mode if (!ini_get('safe_mode') || !$path = ini_get('safe_mode_exec_dir')) { $path = getenv('PATH'); if (!$path) { $path = getenv('Path'); // some OSes are just stupid enough to do this } } $path_elements = explode(PATH_SEPARATOR, $path); } if (OS_WINDOWS) { $exe_suffixes = getenv('PATHEXT') ? explode(PATH_SEPARATOR, getenv('PATHEXT')) : array('.exe','.bat','.cmd','.com'); // allow passing a command.exe param if (strpos($program, '.') !== false) { array_unshift($exe_suffixes, ''); } // is_executable() is not available on windows for PHP4 $pear_is_executable = (function_exists('is_executable')) ? 'is_executable' : 'is_file'; } else { $exe_suffixes = array(''); $pear_is_executable = 'is_executable'; } foreach ($exe_suffixes as $suff) { foreach ($path_elements as $dir) { $file = $dir . DIRECTORY_SEPARATOR . $program . $suff; if (@$pear_is_executable($file)) { return $file; } } } return $fallback; } /** * The "find" command * * Usage: * * System::find($dir); * System::find("$dir -type d"); * System::find("$dir -type f"); * System::find("$dir -name *.php"); * System::find("$dir -name *.php -name *.htm*"); * System::find("$dir -maxdepth 1"); * * Params implmented: * $dir -> Start the search at this directory * -type d -> return only directories * -type f -> return only files * -maxdepth -> max depth of recursion * -name -> search pattern (bash style). Multiple -name param allowed * * @param mixed Either array or string with the command line * @return array Array of found files * @static * */ function find($args) { if (!is_array($args)) { $args = preg_split('/\s+/', $args, -1, PREG_SPLIT_NO_EMPTY); } $dir = realpath(array_shift($args)); if (!$dir) { return array(); } $patterns = array(); $depth = 0; $do_files = $do_dirs = true; $args_count = count($args); for ($i = 0; $i < $args_count; $i++) { switch ($args[$i]) { case '-type': if (in_array($args[$i+1], array('d', 'f'))) { if ($args[$i+1] == 'd') { $do_files = false; } else { $do_dirs = false; } } $i++; break; case '-name': $name = preg_quote($args[$i+1], '#'); // our magic characters ? and * have just been escaped, // so now we change the escaped versions to PCRE operators $name = strtr($name, array('\?' => '.', '\*' => '.*')); $patterns[] = '('.$name.')'; $i++; break; case '-maxdepth': $depth = $args[$i+1]; break; } } $path = System::_dirToStruct($dir, $depth, 0, true); if ($do_files && $do_dirs) { $files = array_merge($path['files'], $path['dirs']); } elseif ($do_dirs) { $files = $path['dirs']; } else { $files = $path['files']; } if (count($patterns)) { $dsq = preg_quote(DIRECTORY_SEPARATOR, '#'); $pattern = '#(^|'.$dsq.')'.implode('|', $patterns).'($|'.$dsq.')#'; $ret = array(); $files_count = count($files); for ($i = 0; $i < $files_count; $i++) { // only search in the part of the file below the current directory $filepart = basename($files[$i]); if (preg_match($pattern, $filepart)) { $ret[] = $files[$i]; } } return $ret; } return $files; } } * @author Hans Lellelid * @author Bertrand Mansion * @author Greg Beaver * @copyright 1997-2009 The Authors * @license http://opensource.org/licenses/bsd-license.php New BSD License * @version CVS: $Id: Exception.php 313023 2011-07-06 19:17:11Z dufuz $ * @link http://pear.php.net/package/PEAR * @since File available since Release 1.3.3 */ /** * Base PEAR_Exception Class * * 1) Features: * * - Nestable exceptions (throw new PEAR_Exception($msg, $prev_exception)) * - Definable triggers, shot when exceptions occur * - Pretty and informative error messages * - Added more context info available (like class, method or cause) * - cause can be a PEAR_Exception or an array of mixed * PEAR_Exceptions/PEAR_ErrorStack warnings * - callbacks for specific exception classes and their children * * 2) Ideas: * * - Maybe a way to define a 'template' for the output * * 3) Inherited properties from PHP Exception Class: * * protected $message * protected $code * protected $line * protected $file * private $trace * * 4) Inherited methods from PHP Exception Class: * * __clone * __construct * getMessage * getCode * getFile * getLine * getTraceSafe * getTraceSafeAsString * __toString * * 5) Usage example * * * require_once 'PEAR/Exception.php'; * * class Test { * function foo() { * throw new PEAR_Exception('Error Message', ERROR_CODE); * } * } * * function myLogger($pear_exception) { * echo $pear_exception->getMessage(); * } * // each time a exception is thrown the 'myLogger' will be called * // (its use is completely optional) * PEAR_Exception::addObserver('myLogger'); * $test = new Test; * try { * $test->foo(); * } catch (PEAR_Exception $e) { * print $e; * } * * * @category pear * @package PEAR * @author Tomas V.V.Cox * @author Hans Lellelid * @author Bertrand Mansion * @author Greg Beaver * @copyright 1997-2009 The Authors * @license http://opensource.org/licenses/bsd-license.php New BSD License * @version Release: 1.9.4 * @link http://pear.php.net/package/PEAR * @since Class available since Release 1.3.3 * */ class PEAR_Exception extends Exception { const OBSERVER_PRINT = -2; const OBSERVER_TRIGGER = -4; const OBSERVER_DIE = -8; protected $cause; private static $_observers = array(); private static $_uniqueid = 0; private $_trace; /** * Supported signatures: * - PEAR_Exception(string $message); * - PEAR_Exception(string $message, int $code); * - PEAR_Exception(string $message, Exception $cause); * - PEAR_Exception(string $message, Exception $cause, int $code); * - PEAR_Exception(string $message, PEAR_Error $cause); * - PEAR_Exception(string $message, PEAR_Error $cause, int $code); * - PEAR_Exception(string $message, array $causes); * - PEAR_Exception(string $message, array $causes, int $code); * @param string exception message * @param int|Exception|PEAR_Error|array|null exception cause * @param int|null exception code or null */ public function __construct($message, $p2 = null, $p3 = null) { if (is_int($p2)) { $code = $p2; $this->cause = null; } elseif (is_object($p2) || is_array($p2)) { // using is_object allows both Exception and PEAR_Error if (is_object($p2) && !($p2 instanceof Exception)) { if (!class_exists('PEAR_Error') || !($p2 instanceof PEAR_Error)) { throw new PEAR_Exception('exception cause must be Exception, ' . 'array, or PEAR_Error'); } } $code = $p3; if (is_array($p2) && isset($p2['message'])) { // fix potential problem of passing in a single warning $p2 = array($p2); } $this->cause = $p2; } else { $code = null; $this->cause = null; } parent::__construct($message, $code); $this->signal(); } /** * @param mixed $callback - A valid php callback, see php func is_callable() * - A PEAR_Exception::OBSERVER_* constant * - An array(const PEAR_Exception::OBSERVER_*, * mixed $options) * @param string $label The name of the observer. Use this if you want * to remove it later with removeObserver() */ public static function addObserver($callback, $label = 'default') { self::$_observers[$label] = $callback; } public static function removeObserver($label = 'default') { unset(self::$_observers[$label]); } /** * @return int unique identifier for an observer */ public static function getUniqueId() { return self::$_uniqueid++; } private function signal() { foreach (self::$_observers as $func) { if (is_callable($func)) { call_user_func($func, $this); continue; } settype($func, 'array'); switch ($func[0]) { case self::OBSERVER_PRINT : $f = (isset($func[1])) ? $func[1] : '%s'; printf($f, $this->getMessage()); break; case self::OBSERVER_TRIGGER : $f = (isset($func[1])) ? $func[1] : E_USER_NOTICE; trigger_error($this->getMessage(), $f); break; case self::OBSERVER_DIE : $f = (isset($func[1])) ? $func[1] : '%s'; die(printf($f, $this->getMessage())); break; default: trigger_error('invalid observer type', E_USER_WARNING); } } } /** * Return specific error information that can be used for more detailed * error messages or translation. * * This method may be overridden in child exception classes in order * to add functionality not present in PEAR_Exception and is a placeholder * to define API * * The returned array must be an associative array of parameter => value like so: *
     * array('name' => $name, 'context' => array(...))
     * 
* @return array */ public function getErrorData() { return array(); } /** * Returns the exception that caused this exception to be thrown * @access public * @return Exception|array The context of the exception */ public function getCause() { return $this->cause; } /** * Function must be public to call on caused exceptions * @param array */ public function getCauseMessage(&$causes) { $trace = $this->getTraceSafe(); $cause = array('class' => get_class($this), 'message' => $this->message, 'file' => 'unknown', 'line' => 'unknown'); if (isset($trace[0])) { if (isset($trace[0]['file'])) { $cause['file'] = $trace[0]['file']; $cause['line'] = $trace[0]['line']; } } $causes[] = $cause; if ($this->cause instanceof PEAR_Exception) { $this->cause->getCauseMessage($causes); } elseif ($this->cause instanceof Exception) { $causes[] = array('class' => get_class($this->cause), 'message' => $this->cause->getMessage(), 'file' => $this->cause->getFile(), 'line' => $this->cause->getLine()); } elseif (class_exists('PEAR_Error') && $this->cause instanceof PEAR_Error) { $causes[] = array('class' => get_class($this->cause), 'message' => $this->cause->getMessage(), 'file' => 'unknown', 'line' => 'unknown'); } elseif (is_array($this->cause)) { foreach ($this->cause as $cause) { if ($cause instanceof PEAR_Exception) { $cause->getCauseMessage($causes); } elseif ($cause instanceof Exception) { $causes[] = array('class' => get_class($cause), 'message' => $cause->getMessage(), 'file' => $cause->getFile(), 'line' => $cause->getLine()); } elseif (class_exists('PEAR_Error') && $cause instanceof PEAR_Error) { $causes[] = array('class' => get_class($cause), 'message' => $cause->getMessage(), 'file' => 'unknown', 'line' => 'unknown'); } elseif (is_array($cause) && isset($cause['message'])) { // PEAR_ErrorStack warning $causes[] = array( 'class' => $cause['package'], 'message' => $cause['message'], 'file' => isset($cause['context']['file']) ? $cause['context']['file'] : 'unknown', 'line' => isset($cause['context']['line']) ? $cause['context']['line'] : 'unknown', ); } } } } public function getTraceSafe() { if (!isset($this->_trace)) { $this->_trace = $this->getTrace(); if (empty($this->_trace)) { $backtrace = debug_backtrace(); $this->_trace = array($backtrace[count($backtrace)-1]); } } return $this->_trace; } public function getErrorClass() { $trace = $this->getTraceSafe(); return $trace[0]['class']; } public function getErrorMethod() { $trace = $this->getTraceSafe(); return $trace[0]['function']; } public function __toString() { if (isset($_SERVER['REQUEST_URI'])) { return $this->toHtml(); } return $this->toText(); } public function toHtml() { $trace = $this->getTraceSafe(); $causes = array(); $this->getCauseMessage($causes); $html = '' . "\n"; foreach ($causes as $i => $cause) { $html .= '\n"; } $html .= '' . "\n" . '' . '' . '' . "\n"; foreach ($trace as $k => $v) { $html .= '' . '' . '' . "\n"; } $html .= '' . '' . '' . "\n" . '
' . str_repeat('-', $i) . ' ' . $cause['class'] . ': ' . htmlspecialchars($cause['message']) . ' in ' . $cause['file'] . ' ' . 'on line ' . $cause['line'] . '' . "
Exception trace
#FunctionLocation
' . $k . ''; if (!empty($v['class'])) { $html .= $v['class'] . $v['type']; } $html .= $v['function']; $args = array(); if (!empty($v['args'])) { foreach ($v['args'] as $arg) { if (is_null($arg)) $args[] = 'null'; elseif (is_array($arg)) $args[] = 'Array'; elseif (is_object($arg)) $args[] = 'Object('.get_class($arg).')'; elseif (is_bool($arg)) $args[] = $arg ? 'true' : 'false'; elseif (is_int($arg) || is_double($arg)) $args[] = $arg; else { $arg = (string)$arg; $str = htmlspecialchars(substr($arg, 0, 16)); if (strlen($arg) > 16) $str .= '…'; $args[] = "'" . $str . "'"; } } } $html .= '(' . implode(', ',$args) . ')' . '' . (isset($v['file']) ? $v['file'] : 'unknown') . ':' . (isset($v['line']) ? $v['line'] : 'unknown') . '
' . ($k+1) . '{main} 
'; return $html; } public function toText() { $causes = array(); $this->getCauseMessage($causes); $causeMsg = ''; foreach ($causes as $i => $cause) { $causeMsg .= str_repeat(' ', $i) . $cause['class'] . ': ' . $cause['message'] . ' in ' . $cause['file'] . ' on line ' . $cause['line'] . "\n"; } return $causeMsg . $this->getTraceAsString(); } } * @license http://www.php.net/license/3_0.txt PHP 3.0 * @version CVS: $Id: Getopt.php 306067 2010-12-08 00:13:31Z dufuz $ * @link http://pear.php.net/package/Console_Getopt */ require_once 'PEAR.php'; /** * Command-line options parsing class. * * @category Console * @package Console_Getopt * @author Andrei Zmievski * @license http://www.php.net/license/3_0.txt PHP 3.0 * @link http://pear.php.net/package/Console_Getopt */ class Console_Getopt { /** * Parses the command-line options. * * The first parameter to this function should be the list of command-line * arguments without the leading reference to the running program. * * The second parameter is a string of allowed short options. Each of the * option letters can be followed by a colon ':' to specify that the option * requires an argument, or a double colon '::' to specify that the option * takes an optional argument. * * The third argument is an optional array of allowed long options. The * leading '--' should not be included in the option name. Options that * require an argument should be followed by '=', and options that take an * option argument should be followed by '=='. * * The return value is an array of two elements: the list of parsed * options and the list of non-option command-line arguments. Each entry in * the list of parsed options is a pair of elements - the first one * specifies the option, and the second one specifies the option argument, * if there was one. * * Long and short options can be mixed. * * Most of the semantics of this function are based on GNU getopt_long(). * * @param array $args an array of command-line arguments * @param string $short_options specifies the list of allowed short options * @param array $long_options specifies the list of allowed long options * @param boolean $skip_unknown suppresses Console_Getopt: unrecognized option * * @return array two-element array containing the list of parsed options and * the non-option arguments * @access public */ function getopt2($args, $short_options, $long_options = null, $skip_unknown = false) { return Console_Getopt::doGetopt(2, $args, $short_options, $long_options, $skip_unknown); } /** * This function expects $args to start with the script name (POSIX-style). * Preserved for backwards compatibility. * * @param array $args an array of command-line arguments * @param string $short_options specifies the list of allowed short options * @param array $long_options specifies the list of allowed long options * * @see getopt2() * @return array two-element array containing the list of parsed options and * the non-option arguments */ function getopt($args, $short_options, $long_options = null, $skip_unknown = false) { return Console_Getopt::doGetopt(1, $args, $short_options, $long_options, $skip_unknown); } /** * The actual implementation of the argument parsing code. * * @param int $version Version to use * @param array $args an array of command-line arguments * @param string $short_options specifies the list of allowed short options * @param array $long_options specifies the list of allowed long options * @param boolean $skip_unknown suppresses Console_Getopt: unrecognized option * * @return array */ function doGetopt($version, $args, $short_options, $long_options = null, $skip_unknown = false) { // in case you pass directly readPHPArgv() as the first arg if (PEAR::isError($args)) { return $args; } if (empty($args)) { return array(array(), array()); } $non_opts = $opts = array(); settype($args, 'array'); if ($long_options) { sort($long_options); } /* * Preserve backwards compatibility with callers that relied on * erroneous POSIX fix. */ if ($version < 2) { if (isset($args[0]{0}) && $args[0]{0} != '-') { array_shift($args); } } reset($args); while (list($i, $arg) = each($args)) { /* The special element '--' means explicit end of options. Treat the rest of the arguments as non-options and end the loop. */ if ($arg == '--') { $non_opts = array_merge($non_opts, array_slice($args, $i + 1)); break; } if ($arg{0} != '-' || (strlen($arg) > 1 && $arg{1} == '-' && !$long_options)) { $non_opts = array_merge($non_opts, array_slice($args, $i)); break; } elseif (strlen($arg) > 1 && $arg{1} == '-') { $error = Console_Getopt::_parseLongOption(substr($arg, 2), $long_options, $opts, $args, $skip_unknown); if (PEAR::isError($error)) { return $error; } } elseif ($arg == '-') { // - is stdin $non_opts = array_merge($non_opts, array_slice($args, $i)); break; } else { $error = Console_Getopt::_parseShortOption(substr($arg, 1), $short_options, $opts, $args, $skip_unknown); if (PEAR::isError($error)) { return $error; } } } return array($opts, $non_opts); } /** * Parse short option * * @param string $arg Argument * @param string[] $short_options Available short options * @param string[][] &$opts * @param string[] &$args * @param boolean $skip_unknown suppresses Console_Getopt: unrecognized option * * @access private * @return void */ function _parseShortOption($arg, $short_options, &$opts, &$args, $skip_unknown) { for ($i = 0; $i < strlen($arg); $i++) { $opt = $arg{$i}; $opt_arg = null; /* Try to find the short option in the specifier string. */ if (($spec = strstr($short_options, $opt)) === false || $arg{$i} == ':') { if ($skip_unknown === true) { break; } $msg = "Console_Getopt: unrecognized option -- $opt"; return PEAR::raiseError($msg); } if (strlen($spec) > 1 && $spec{1} == ':') { if (strlen($spec) > 2 && $spec{2} == ':') { if ($i + 1 < strlen($arg)) { /* Option takes an optional argument. Use the remainder of the arg string if there is anything left. */ $opts[] = array($opt, substr($arg, $i + 1)); break; } } else { /* Option requires an argument. Use the remainder of the arg string if there is anything left. */ if ($i + 1 < strlen($arg)) { $opts[] = array($opt, substr($arg, $i + 1)); break; } else if (list(, $opt_arg) = each($args)) { /* Else use the next argument. */; if (Console_Getopt::_isShortOpt($opt_arg) || Console_Getopt::_isLongOpt($opt_arg)) { $msg = "option requires an argument --$opt"; return PEAR::raiseError("Console_Getopt:" . $msg); } } else { $msg = "option requires an argument --$opt"; return PEAR::raiseError("Console_Getopt:" . $msg); } } } $opts[] = array($opt, $opt_arg); } } /** * Checks if an argument is a short option * * @param string $arg Argument to check * * @access private * @return bool */ function _isShortOpt($arg) { return strlen($arg) == 2 && $arg[0] == '-' && preg_match('/[a-zA-Z]/', $arg[1]); } /** * Checks if an argument is a long option * * @param string $arg Argument to check * * @access private * @return bool */ function _isLongOpt($arg) { return strlen($arg) > 2 && $arg[0] == '-' && $arg[1] == '-' && preg_match('/[a-zA-Z]+$/', substr($arg, 2)); } /** * Parse long option * * @param string $arg Argument * @param string[] $long_options Available long options * @param string[][] &$opts * @param string[] &$args * * @access private * @return void|PEAR_Error */ function _parseLongOption($arg, $long_options, &$opts, &$args, $skip_unknown) { @list($opt, $opt_arg) = explode('=', $arg, 2); $opt_len = strlen($opt); for ($i = 0; $i < count($long_options); $i++) { $long_opt = $long_options[$i]; $opt_start = substr($long_opt, 0, $opt_len); $long_opt_name = str_replace('=', '', $long_opt); /* Option doesn't match. Go on to the next one. */ if ($long_opt_name != $opt) { continue; } $opt_rest = substr($long_opt, $opt_len); /* Check that the options uniquely matches one of the allowed options. */ if ($i + 1 < count($long_options)) { $next_option_rest = substr($long_options[$i + 1], $opt_len); } else { $next_option_rest = ''; } if ($opt_rest != '' && $opt{0} != '=' && $i + 1 < count($long_options) && $opt == substr($long_options[$i+1], 0, $opt_len) && $next_option_rest != '' && $next_option_rest{0} != '=') { $msg = "Console_Getopt: option --$opt is ambiguous"; return PEAR::raiseError($msg); } if (substr($long_opt, -1) == '=') { if (substr($long_opt, -2) != '==') { /* Long option requires an argument. Take the next argument if one wasn't specified. */; if (!strlen($opt_arg) && !(list(, $opt_arg) = each($args))) { $msg = "Console_Getopt: option requires an argument --$opt"; return PEAR::raiseError($msg); } if (Console_Getopt::_isShortOpt($opt_arg) || Console_Getopt::_isLongOpt($opt_arg)) { $msg = "Console_Getopt: option requires an argument --$opt"; return PEAR::raiseError($msg); } } } else if ($opt_arg) { $msg = "Console_Getopt: option --$opt doesn't allow an argument"; return PEAR::raiseError($msg); } $opts[] = array('--' . $opt, $opt_arg); return; } if ($skip_unknown === true) { return; } return PEAR::raiseError("Console_Getopt: unrecognized option --$opt"); } /** * Safely read the $argv PHP array across different PHP configurations. * Will take care on register_globals and register_argc_argv ini directives * * @access public * @return mixed the $argv PHP array or PEAR error if not registered */ function readPHPArgv() { global $argv; if (!is_array($argv)) { if (!@is_array($_SERVER['argv'])) { if (!@is_array($GLOBALS['HTTP_SERVER_VARS']['argv'])) { $msg = "Could not read cmd args (register_argc_argv=Off?)"; return PEAR::raiseError("Console_Getopt: " . $msg); } return $GLOBALS['HTTP_SERVER_VARS']['argv']; } return $_SERVER['argv']; } return $argv; } } 'secret1', 'user2' => 'secret2', ) The signature algorithm is as follows: #. Parameters ``atimestamp`` (current unix timestamp) and ``atoken`` (username) have to be added to the URL parameters #. URL parameters are normalized as described in `OAuth Parameters Normalization`__: #. Sort parameters list by name #. Name and value are `raw-url-encoded`__ #. Name and value are concatenated with ``=`` as separator #. The resulting strings are concatenated with ``&`` as separator #. URL parameter string is used together with the secret key to create a `HMAC-SHA1`__ digest #. Digest is appended to the URL as ``asignature`` __ http://tools.ietf.org/html/rfc5849#section-3.4.1.3.2 __ http://tools.ietf.org/html/rfc5849#section-3.6 __ http://tools.ietf.org/html/rfc5849#section-3.4.2 Example ======= .. note:: The ``docs/`` directory contains an example PHP client implementation. We want to create a screenshot of ``http://example.org/`` in size 400x300, using the browser size of 1024x768:: http://example.org/phancap/get.php?swidth=400&sheight=300&url=http%3A%2F%2Fexample.org%2F&bwidth=1024&bheight=768 Phancap's config file contains:: $access = array( 'user' => 'secret' ); Our parameters are thus: ============== ===== Name Value ============== ===== ``swidth`` ``400`` ``sheight`` ``300`` ``url`` ``http://example.org/`` ``bwidth`` ``1024`` ``bheight`` ``768`` ============== ===== At first, we need to add parameters ``atimestamp`` and ``atoken``. ``atimestamp`` is the current unix timestamp. ``atoken`` is our user name: ``user``. Now the parameter list is sorted: ============== ===== Name Value ============== ===== ``atimestamp`` ``1396353987`` ``atoken`` ``user`` ``bheight`` ``768`` ``bwidth`` ``1024`` ``sheight`` ``300`` ``swidth`` ``400`` ``url`` ``http://example.org/`` ============== ===== The parameters are raw-url-encoded. The only value that changes is the url, it becomes ``http%3A%2F%2Fexample.org%2F``. Concatenating the name/value pairs leads to the following string:: atimestamp=1396353987&atoken=user&bheight=768&bwidth=1024&sheight=300&swidth=400&url=http%3A%2F%2Fexample.org%2F Creating the HMAC digest with sha1, the calculated string and our key ``secret`` gives us the following string:: 9a12eac5ff859f9306eaaf5a18b9a931fe10b89d This is the signature; it gets appended to the URL as ``asignature`` parameter. ============ Dependencies ============ - External tools: - `cutycapt `_ - `imagemagick's `_ ``convert`` - ``xvfb-run`` - Libraries (already included in the ``.phar``): - PEAR's ``System.php`` ============= About phancap ============= License ======= ``phancap`` is licensed under the `AGPL v3`__ or later. __ http://www.gnu.org/licenses/agpl.html Homepage ======== Web site http://cweiske.de/phancap.htm Source code http://git.cweiske.de/phancap.git Mirror: https://github.com/cweiske/phancap Author ====== Written by Christian Weiske, cweiske@cweiske.de ============ Alternatives ============ All of those are open source: * http://code.google.com/p/browsershots/ (python) * https://github.com/gre/screenshot-webservice (scala) =========== Development =========== Releasing a new version ======================= #. Update ``ChangeLog`` #. Change version number in ``build.xml`` #. Run ``phing`` #. Deploy the new files in ``dist/`` #. Tag the new version in git secret key $access = array( 'bar' => 'bar', ); ?> * @copyright 2014 Christian Weiske * @license http://www.gnu.org/licenses/agpl.html GNU AGPL v3 * @link http://cweiske.de/phancap.htm */ namespace phancap; /** * Phancap configuration * * @category Tools * @package Config * @author Christian Weiske * @copyright 2014 Christian Weiske * @license http://www.gnu.org/licenses/agpl.html GNU AGPL v3 * @version Release: @package_version@ * @link http://cweiske.de/phancap.htm */ class Config { /** * Full file system path to cache directory * @var string */ public $cacheDir; /** * Full URL to cache directory * @var string */ public $cacheDirUrl; /** * List of config file paths that were tried to load * @var array */ public $cfgFiles = array(); /** * If a configuration file could be found * @var boolean */ public $cfgFileExists; /** * Credentials for access * * Array of * username => secret key * entries (used for signature). * * Boolean true to allow access in every case, * false to completely disable it. * * @var array|boolean */ public $access = true; /** * Disable the setup check tool * @var boolean */ public $disableSetup = false; /** * Redirect the browser to the cache URL. * If disabled, the file is directly delivered. * * Helpful for debugging since it does not change the browser's URL. * * @var boolean */ public $redirect = true; /** * How long requests with an old timestamp may be used. * 2 days default. * * @var integer */ public $timestampMaxAge = 'P2D'; /** * Cache time of downloaded screenshots. * When the file is as older than this, it gets re-created. * The user can override that using the "smaxage" parameter. * * Defaults to 1 week. * * @var integer Lifetime in seconds */ public $screenshotMaxAge = 'P1W'; /** * Minimum age of a screeshot. * A user cannot set the max age parameter below it. * * Defaults to 1 hour. * * @var integer Minimum lifetime in seconds */ public $screenshotMinAge = 'PT1H'; /** * Cutycapt adapter options */ public $cutycapt = array(); /** * Initialize default values and loads configuration file paths */ public function __construct() { $this->cacheDir = getcwd() . '/imgcache/'; $this->cacheDirUrl = $this->getCurrentUrlDir() . '/imgcache/'; $this->timestampMaxAge = Options::validateAge($this->timestampMaxAge); $this->screenshotMaxAge = Options::validateAge($this->screenshotMaxAge); $this->screenshotMinAge = Options::validateAge($this->screenshotMinAge); $this->loadConfigFilePaths(); } /** * Load the first configuration file that exists * * @return void * @uses $cfgFileExists */ public function load() { $this->cfgFileExists = false; foreach ($this->cfgFiles as $file) { if (file_exists($file)) { $this->cfgFileExists = true; $this->loadFile($file); break; } } $this->setupCheck(); } /** * Load possible configuration file paths into $this->cfgFiles. * * @return void */ protected function loadConfigFilePaths() { $phar = false; if (class_exists('\\Phar')) { $pharFile = \Phar::running(); if ($pharFile != '') { $phar = true; } } if ($phar) { //remove phar:// from the path $this->cfgFiles[] = substr($pharFile, 7) . '.config.php'; } else { $this->cfgFiles[] = __DIR__ . '/../../data/phancap.config.php'; } //TODO: add ~/.config/phancap.php $this->cfgFiles[] = '/etc/phancap.php'; } /** * Load values of a configuration file into this class * * @param string $filename Configuration file (.php) * * @return void */ protected function loadFile($filename) { include $filename; $vars = get_defined_vars(); foreach ($vars as $k => $value) { $this->$k = $value; } } /** * Check if the cache directory exists and is writable * * @return void * @throws \Exception When something is not ok */ public function setupCheck() { if (!is_dir($this->cacheDir)) { throw new \Exception( 'Cache directory does not exist: ' . $this->cacheDir ); } if (!is_writable($this->cacheDir)) { throw new \Exception( 'Cache directory is not writable: ' . $this->cacheDir ); } } /** * Returns the current URL, without fragmet. * * @return string Full URL */ protected function getCurrentUrl() { if (!isset($_SERVER['REQUEST_SCHEME'])) { $_SERVER['REQUEST_SCHEME'] = 'http'; } return $_SERVER['REQUEST_SCHEME'] . '://' . $_SERVER['HTTP_HOST'] . preg_replace('/#.*$/', '', $_SERVER['REQUEST_URI']); } /** * Returns the current URL without the file name in the path * * @return string Directory of URL without trailing slash, * and without .phar file */ public function getCurrentUrlDir() { $url = $this->getCurrentUrl(); $url = preg_replace('/\?.*$/', '', $url); if (substr($url, -1) != '/') { $url = substr($url, 0, -strlen(basename($url)) - 1); } if (class_exists('\\Phar') && \Phar::running()) { //remove .phar file name $url = substr($url, 0, -strlen(basename($url)) - 1); } return $url; } } ?> * @copyright 2014 Christian Weiske * @license http://www.gnu.org/licenses/agpl.html GNU AGPL v3 * @link http://cweiske.de/phancap.htm */ namespace phancap; /** * Class autoloader, PSR-0 compliant. * * @category Tools * @package Phancap * @author Christian Weiske * @copyright 2014 Christian Weiske * @license http://www.gnu.org/licenses/agpl.html GNU AGPL v3 * @version Release: @package_version@ * @link http://cweiske.de/phancap.htm */ class Autoloader { /** * Load the given class * * @param string $class Class name * * @return void */ public function load($class) { $file = strtr($class, '_\\', '//') . '.php'; if (stream_resolve_include_path($file)) { include $file; } } /** * Register this autoloader * * @return void */ public static function register() { set_include_path( get_include_path() . PATH_SEPARATOR . __DIR__ . '/../' ); spl_autoload_register(array(new self(), 'load')); } } ?> * @copyright 2014 Christian Weiske * @license http://www.gnu.org/licenses/agpl.html GNU AGPL v3 * @link http://cweiske.de/phancap.htm */ namespace phancap; /** * Run a shell command * * @category Tools * @package Executor * @author Christian Weiske * @copyright 2014 Christian Weiske * @license http://www.gnu.org/licenses/agpl.html GNU AGPL v3 * @version Release: @package_version@ * @link http://cweiske.de/phancap.htm */ class Executor { /** * Run a shell command and check exit code. * * @param string $cmd Full command including parameters and options * * @return void * @throws \Exception When the exit code is not 0 */ public static function run($cmd) { exec($cmd . ' 2>&1', $arOutput, $exitcode); if ($exitcode != 0) { //FIXME: do something with $arOutput //echo implode("\n", $arOutput) . "\n"; throw new \Exception('Error running cutycapt', $exitcode); } } /** * Let the command run for some time. Kill it if it did not exit itself. * * We use the GNU coreutils "timeout" utility instead of the pcntl * extension since pcntl is disabled on mod_php. * * @param string $cmd Full command including parameters and options * * @return void * @throws \Exception When the exit code is not 0 */ public static function runForSomeTime($cmd, $seconds) { return static::run( 'timeout --signal=9 ' . $seconds . 's ' . $cmd ); } } ?> * @copyright 2014 Christian Weiske * @license http://www.gnu.org/licenses/agpl.html GNU AGPL v3 * @link http://cweiske.de/phancap.htm */ namespace phancap; /** * Options a user can give to the API * * @category Tools * @package Options * @author Christian Weiske * @copyright 2014 Christian Weiske * @license http://www.gnu.org/licenses/agpl.html GNU AGPL v3 * @version Release: @package_version@ * @link http://cweiske.de/phancap.htm */ class Options { /** * Available options and their configuration * * @var array */ public $options = array( /** * Browser settings */ 'url' => array( 'title' => 'Website URL', 'default' => null, 'type' => 'url', 'required' => true, ), 'bwidth' => array( 'title' => 'Browser width', 'default' => 1024, 'type' => 'int', 'min' => 16, 'max' => 2048, ), 'bheight' => array( 'title' => 'Browser height', 'default' => null, 'type' => 'int', 'min' => 16, 'max' => 8192, ), /** * Screenshot settings */ 'swidth' => array( 'title' => 'Screenshot width', 'default' => null, 'type' => 'int', 'min' => 16, 'max' => 8192, ), 'sheight' => array( 'title' => 'Screenshot height', 'default' => null, 'type' => 'int', 'min' => 16, 'max' => 8192, ), 'sformat' => array( 'title' => 'Screenshot format', 'default' => 'png', 'type' => array('png', 'jpg', 'pdf'), ), 'smode' => array( 'title' => 'Screenshot mode', 'default' => 'screen', 'type' => array('screen', 'page'), ), 'smaxage' => array( 'title' => 'Maximum age for a screenshot', 'default' => null, 'type' => 'age', 'min' => null, ), /** * Authentication */ 'atimestamp' => array( 'title' => 'Timestamp the request has been generated', 'default' => null, 'type' => 'skip', ), 'atoken' => array( 'title' => 'Access token (user name)', 'default' => null, 'type' => 'skip', ), 'asignature' => array( 'title' => 'Access signature', 'default' => null, 'type' => 'skip', ), ); /** * Actual values we use after parsing the GET parameters * * @var array */ public $values = array(); /** * @var Config */ protected $config; /** * Parses an array of options, validates them and writes them into * $this->values. * * @param array $arValues Array of options, e.g. $_GET * * @return void * @throws \InvalidArgumentException When required parameters are missing * or parameter values are invalid. */ public function parse($arValues) { foreach ($this->options as $name => $arOption) { $this->values[$name] = $arOption['default']; if (!isset($arValues[$name])) { if (isset($arOption['required'])) { throw new \InvalidArgumentException( $name . ' parameter missing' ); } continue; } if ($arValues[$name] === '' && !isset($arOption['required']) ) { //allow empty value; default value will be used } else if ($arOption['type'] == 'url') { $this->values[$name] = $this->validateUrl($arValues[$name]); } else if ($arOption['type'] == 'int') { $this->values[$name] = $this->validateInt( $name, $arValues[$name], $arOption['min'], $arOption['max'] ); } else if (gettype($arOption['type']) == 'array') { $this->values[$name] = $this->validateArray( $name, $arValues[$name], $arOption['type'] ); } else if ($arOption['type'] == 'age') { $this->values[$name] = $this->clamp( static::validateAge($arValues[$name]), $arOption['min'], null, true ); } else if ($arOption['type'] != 'skip') { throw new \InvalidArgumentException( 'Unsupported option type: ' . $arOption['type'] ); } unset($arValues[$name]); } if (count($arValues) > 0) { throw new \InvalidArgumentException( 'Unsupported parameter: ' . implode(', ', array_keys($arValues)) ); } $this->calcPageSize(); } /** * Calculate the browser size and screenshot size from the given options * * @return void */ protected function calcPageSize() { if ($this->values['swidth'] === null) { $this->values['swidth'] = $this->values['bwidth']; } if ($this->values['smode'] == 'page') { return; } if ($this->values['sheight'] !== null) { $this->values['bheight'] = intval( $this->values['bwidth'] / $this->values['swidth'] * $this->values['sheight'] ); } else if ($this->values['bheight'] !== null) { $this->values['sheight'] = intval( $this->values['swidth'] / $this->values['bwidth'] * $this->values['bheight'] ); } else { //no height set. use 4:3 $this->values['sheight'] = $this->values['swidth'] / 4 * 3; $this->values['bheight'] = $this->values['bwidth'] / 4 * 3; } } /** * Makes sure a value is between $min and $max (inclusive) * * @param integer $value Value to check * @param integer $min Minimum allowed value * @param integer $max Maximum allowed value * @param boolean $silent When silent, invalid values are corrected. * An exception is thrown otherwise. * * @return integer Corrected value * @throws \InvalidArgumentException When not silent and value outside range */ protected function clamp($value, $min, $max, $silent = false) { if ($min !== null && $value < $min) { if ($silent) { $value = $min; } else { throw new \InvalidArgumentException( 'Value must be at least ' . $min ); } } if ($max !== null && $value > $max) { if ($silent) { $value = $max; } else { throw new \InvalidArgumentException( 'Value may be up to ' . $min ); } } return $value; } /** * Validates an age is numeric. If it is not numeric, it's interpreted as * a ISO 8601 duration specification. * * @param string $value Age in seconds * * @return integer Age in seconds * @throws \InvalidArgumentException * @link http://en.wikipedia.org/wiki/Iso8601#Durations */ public static function validateAge($value) { if (!is_numeric($value)) { //convert short notation to seconds $value = 'P' . ltrim(strtoupper($value), 'P'); try { $interval = new \DateInterval($value); } catch (\Exception $e) { throw new \InvalidArgumentException( 'Invalid age: ' . $value ); } $value = 86400 * ( $interval->y * 365 + $interval->m * 30 + $interval->d ) + $interval->h * 3600 + $interval->m * 60 + $interval->s; } return $value; } /** * Check that a given value exists in an array * * @param string $name Variable name * @param string $value Value to check * @param array $options Array of allowed values * * @return string Value * @throws \InvalidArgumentException If the value does not exist in $options */ protected function validateArray($name, $value, $options) { if (array_search($value, $options) === false) { throw new \InvalidArgumentException( 'Invalid value ' . $value . ' for ' . $name . '.' . ' Allowed: ' . implode(', ', $options) ); } return $value; } /** * Validate that a value is numeric and between $min and $max (inclusive) * * @param string $name Variable name * @param string $value Value to check * @param integer $min Minimum allowed value * @param integer $max Maximum allowed value * * @return integer Value as integer * @throws \InvalidArgumentException When outside range or not numeric */ protected function validateInt($name, $value, $min, $max) { if (!is_numeric($value)) { throw new \InvalidArgumentException( $name . ' value must be a number' ); } $value = (int) $value; return $this->clamp($value, $min, $max); } /** * Validate (and fix) an URL * * @param string $url URL * * @return string Fixed URL * @throws \InvalidArgumentException */ protected function validateUrl($url) { if ($url === '') { throw new \InvalidArgumentException('URL is empty'); } $parts = parse_url($url); if ($parts === false) { throw new \InvalidArgumentException('Invalid URL'); } if (!isset($parts['scheme'])) { $url = 'http://' . $url; $parts = parse_url($url); } else if ($parts['scheme'] != 'http' && $parts['scheme'] != 'https') { throw new \InvalidArgumentException('Unsupported protocol'); } if (!isset($parts['host'])) { throw new \InvalidArgumentException('URL host missing'); } return $url; } /** * Set phancap configuration * * @param Config $config Phancap configuration * * @return void */ public function setConfig(Config $config) { $this->config = $config; $this->options['smaxage']['default'] = $this->config->screenshotMaxAge; $this->options['smaxage']['min'] = $this->config->screenshotMinAge; } } ?> * @copyright 2014 Christian Weiske * @license http://www.gnu.org/licenses/agpl.html GNU AGPL v3 * @link http://cweiske.de/phancap.htm */ namespace phancap; /** * Image meta data and methods to get info about the file * * @category Tools * @package Image * @author Christian Weiske * @copyright 2014 Christian Weiske * @license http://www.gnu.org/licenses/agpl.html GNU AGPL v3 * @version Release: @package_version@ * @link http://cweiske.de/phancap.htm */ class Image { /** * Description for protected * @var object */ protected $config; /** * Description for public * @var string */ public $name; /** * Set the file name * * @param string $name Image file name */ public function __construct($name) { $this->name = $name; } /** * Get the expiration date for the image, depending on * the maximum age the user requested. * * @param Options $options Image rendering options * * @return integer Unix timestamp */ public function getExpiryDate(Options $options) { $mtime = filemtime($this->getPath()); return $mtime + $options->values['smaxage']; } /** * Get the MIME type for the file * * @return string MIME type string ("image/png") */ public function getMimeType() { $ext = substr($this->name, -4); if ($ext == '.jpg') { return 'image/jpeg'; } else if ($ext == '.png') { return 'image/png'; } else if ($ext == '.pdf') { return 'application/pdf'; } return 'application/octet-stream'; } /** * Get the full path to the cached image on disk * * @return string Full path to image */ public function getPath() { return $this->config->cacheDir . $this->name; } /** * Get the public URL for the image * * @return string Public image URL */ public function getUrl() { return $this->config->cacheDirUrl . $this->name; } /** * Set phancap configuration * * @param Config $config Phancap configuration * * @return void */ public function setConfig(Config $config) { $this->config = $config; } } ?> * @copyright 2014 Christian Weiske * @license http://www.gnu.org/licenses/agpl.html GNU AGPL v3 * @link http://cweiske.de/phancap.htm */ namespace phancap; /** * Authentication helper methods * * @category Tools * @package Authenticator * @author Christian Weiske * @copyright 2014 Christian Weiske * @license http://www.gnu.org/licenses/agpl.html GNU AGPL v3 * @version Release: @package_version@ * @link http://cweiske.de/phancap.htm */ class Authenticator { /** * Validate the authentication signature. * * @param object $config Phancap configuration * * @return void * @throws \Exception When a parameter is missing, or authentication fails */ public function authenticate(Config $config) { if ($config->access === false) { throw new \Exception('Authentication not setup'); } if ($config->access === true) { //Access without restrictions allowed return; } if (!isset($_GET['atoken'])) { throw new \Exception('Parameter missing: atoken'); } if (!isset($_GET['asignature'])) { throw new \Exception('Parameter missing: asignature'); } if (!isset($_GET['atimestamp'])) { throw new \Exception('Parameter missing: atimestamp'); } $token = $_GET['atoken']; if (!array_key_exists($token, $config->access)) { throw new \Exception('Unknown atoken'); } $timestamp = (int) $_GET['atimestamp']; if ($timestamp + $config->timestampMaxAge < time()) { throw new \Exception('atimestamp too old'); } $signature = $_GET['asignature']; $params = $_GET; unset($params['asignature']); $sigdata = $this->getSignatureData($params); $verifiedSignature = hash_hmac('sha1', $sigdata, $config->access[$token]); if ($signature !== $verifiedSignature) { throw new \Exception('Invalid signature'); } } /** * Convert a list of parameters into a string that can be hashed. * * @param array $params Parameters, key-value pairs * * @return string Line of encoded parameters */ protected function getSignatureData($params) { ksort($params); $encparams = array(); foreach ($params as $key => $value) { $encparams[] = $key . '=' . rawurlencode($value); } return implode('&', $encparams); } } ?> * @copyright 2014 Christian Weiske * @license http://www.gnu.org/licenses/agpl.html GNU AGPL v3 * @link http://cweiske.de/phancap.htm */ namespace phancap; /** * Repository of existing screenshots * * @category Tools * @package Repository * @author Christian Weiske * @copyright 2014 Christian Weiske * @license http://www.gnu.org/licenses/agpl.html GNU AGPL v3 * @version Release: @package_version@ * @link http://cweiske.de/phancap.htm */ class Repository { /** * Return image object for the given rendering options. * Loads it from cache if possible. * If cache is expired or image does not yet exist, * it will be rendered. * * @param Options $options Image rendering options * * @return Image Image object */ public function getImage(Options $options) { $name = $this->getFilename($options); $img = new Image($name); $img->setConfig($this->config); if (!$this->isAvailable($img, $options)) { $this->render($img, $options); } return $img; } /** * Get the cache image filename for the given rendering options * * @param Options $options Image rendering options * * @return string relative file name for the image */ public function getFilename(Options $options) { $optValues = $options->values; unset($optValues['smaxage']); unset($optValues['atimestamp']); unset($optValues['asignature']); unset($optValues['atoken']); return parse_url($optValues['url'], PHP_URL_HOST) . '-' . md5(\serialize($optValues)) . '.' . $optValues['sformat']; } /** * Check if the image is available locally. * * @param Image $img Image object to render (contains name) * @param Options $options Image rendering options * * @return boolean True if we have it and it's within the cache lifetime, * false if the cache expired or the screenshot does not * exist. */ public function isAvailable(Image $img, Options $options) { $path = $img->getPath(); if (!file_exists($path)) { return false; } if (filemtime($path) < time() - $options->values['smaxage']) { return false; } return true; } /** * Render a website screenshot * * @param Image $img Image object to render (contains name) * @param Options $options Image rendering options * * @return void * @throws \Exception When something goes wrong */ protected function render(Image $img, Options $options) { $adapter = new Adapter_Cutycapt(); $adapter->setConfig($this->config); try { $adapter->render($img, $options); $adapter->cleanup(); } catch (\Exception $e) { $adapter->cleanup(); throw $e; } } /** * Set phancap configuration * * @param Config $config Phancap configuration * * @return void */ public function setConfig(Config $config) { $this->config = $config; } } ?> * @copyright 2014 Christian Weiske * @license http://www.gnu.org/licenses/agpl.html GNU AGPL v3 * @link http://cweiske.de/phancap.htm */ namespace phancap; /** * Screenshot rendering using the "cutycapt" command line tool. * * @category Tools * @package Adapter_Cutycapt * @author Christian Weiske * @copyright 2014 Christian Weiske * @license http://www.gnu.org/licenses/agpl.html GNU AGPL v3 * @version Release: @package_version@ * @link http://cweiske.de/phancap.htm */ class Adapter_Cutycapt { /** * Lock file handle * @var resourece */ protected $lockHdl; /** * Lock file path * @var string */ protected $lockFile = null; /** * Check if all dependencies are available. * * @return mixed TRUE if all is fine, array with error messages otherwise */ public function isAvailable() { $old = error_reporting(error_reporting() & ~E_STRICT); $arErrors = array(); if (\System::which('xvfb-run') === false) { $arErrors[] = '"xvfb-run" is not installed'; } if (\System::which('cutycapt') === false) { $arErrors[] = '"cutycapt" is not installed'; } if (\System::which('convert') === false) { $arErrors[] = '"convert" (imagemagick) is not installed'; } if (\System::which('timeout') === false) { $arErrors[] = '"timeout" (GNU coreutils) is not installed'; } error_reporting($old); if (count($arErrors)) { return $arErrors; } return true; } /** * Render a website screenshot * * @param Image $img Image configuration * @param Options $options Screenshot configuration * * @return void * @throws \Exception When something fails */ public function render(Image $img, Options $options) { $format = $options->values['sformat']; if ($format == 'jpg') { $format = 'jpeg'; } $maxWaitTime = 30;//seconds if (isset($this->config->cutycapt['maxWaitTime'])) { $maxWaitTime = (int) $this->config->cutycapt['maxWaitTime']; } $parameters = ''; if (isset($this->config->cutycapt['parameters'])) { $parameters = $this->config->cutycapt['parameters']; } $serverNumber = $this->getServerNumber($options); $tmpPath = $img->getPath() . '-tmp'; $cmd = 'cutycapt' . ' --url=' . escapeshellarg($options->values['url']) . ' --out-format=' . escapeshellarg($format) . ' --out=' . escapeshellarg($tmpPath) . ' --max-wait=' . (($maxWaitTime - 1) * 1000) . ' --min-width=' . $options->values['bwidth']; if ($options->values['bheight'] !== null) { $cmd .= ' --min-height=' . $options->values['bheight']; } if (strlen($parameters) > 0) { $cmd .= ' ' . $parameters; } $xvfbcmd = 'xvfb-run' . ' -e /dev/stdout' . ' --server-args="-screen 0, 1024x768x24"' . ' --server-num=' . $serverNumber; //cutycapt hangs sometimes - https://sourceforge.net/p/cutycapt/bugs/8/ // we kill it if it does not exit itself Executor::runForSomeTime($xvfbcmd . ' ' . $cmd, $maxWaitTime); $this->resize($tmpPath, $img, $options); } /** * Get a free X server number. * * Each xvfb-run process needs its own free server number. * Needed for multiple parallel requests. * * @return integer Server number */ protected function getServerNumber() { //clean stale lock files $this->cleanup(); $num = 100; $bFound = false; do { ++$num; $f = $this->config->cacheDir . 'tmp-curlycapt-server-' . $num . '.lock'; $this->lockHdl = fopen($f, 'w'); if (flock($this->lockHdl, LOCK_EX | LOCK_NB)) { $this->lockFile = $f; $bFound = true; break; } else { fclose($this->lockHdl); } } while ($num < 200); if (!$bFound) { throw new \Exception('Too many requests running'); } $this->lockFile = $f; return $num; } /** * Unlock lock file and clean up old lock files * * @return void */ public function cleanup() { if ($this->lockFile !== null && $this->lockHdl) { flock($this->lockHdl, LOCK_UN); unlink($this->lockFile); } $lockFiles = glob( $this->config->cacheDir . 'tmp-curlycapt-server-*.lock' ); $now = time(); foreach ($lockFiles as $file) { if ($now - filemtime($file) > 120) { //delete stale lock file; probably something crashed. unlink($file); } } } /** * Convert an image to the given size. * * Target file is the path of $img. * * @param string $tmpPath Path of image to be scaled. * @param Image $img Image configuration * @param Options $options Screenshot configuration * * @return void */ protected function resize($tmpPath, Image $img, Options $options) { if ($options->values['sformat'] == 'pdf') { //nothing to resize. rename($tmpPath, $img->getPath()); return; } $crop = ''; if ($options->values['smode'] == 'screen') { $crop = ' -crop ' . $options->values['swidth'] . 'x' . $options->values['sheight'] . '+0x0'; } $convertcmd = 'convert' . ' ' . escapeshellarg($tmpPath) . ' -resize ' . $options->values['swidth'] . $crop . ' ' . escapeshellarg($img->getPath()); Executor::run($convertcmd); //var_dump($convertcmd);die(); unlink($tmpPath); } /** * Set phancap configuration * * @param Config $config Phancap configuration * * @return void */ public function setConfig(Config $config) { $this->config = $config; } } ?> * @copyright 2014 Christian Weiske * @license http://www.gnu.org/licenses/agpl.html GNU AGPL v3 * @link http://cweiske.de/phancap.htm */ if (!in_array('phar', stream_get_wrappers()) || !class_exists('Phar', false)) { echo "Phar extension not avaiable\n"; exit(255); } $web = 'www/index.php'; /** * Rewrite the HTTP request path to an internal file. * Maps "" and "/" to "www/index.php". * * @param string $path Path from the browser, relative to the .phar * * @return string Internal path. */ function rewritePath($path) { if ($path == '') { //we need a / to get the relative links on index.php work if (!isset($_SERVER['REQUEST_SCHEME'])) { $_SERVER['REQUEST_SCHEME'] = 'http'; } $url = $_SERVER['REQUEST_SCHEME'] . '://' . $_SERVER['HTTP_HOST'] . preg_replace('/[?#].*$/', '', $_SERVER['REQUEST_URI']) . '/'; header('Location: ' . $url); exit(0); } else if ($path == '/') { return 'www/index.php'; } if (substr($path, -4) == '.css') { header('Expires: ' . date('r', time() + 86400 * 7)); } return 'www' . $path; } set_include_path( 'phar://' . __FILE__ . PATH_SEPARATOR . 'phar://' . __FILE__ . '/lib/' ); Phar::webPhar(null, $web, null, array(), 'rewritePath'); //TODO: implement CLI setup check echo "phancap can only be used in the browser\n"; exit(1); __HALT_COMPILER(); ?> 9b[p20 RGBMB