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Chamilo is a learning management system focused on ease of use and accessibility
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chamilo-lms/main/lp/openoffice_document.class.php

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<?php
/* For licensing terms, see /license.txt */
/**
* Defines the OpenofficeDocument class, which is meant as a mother class
* to help in the conversion of Office documents to learning paths.
*
* @package chamilo.learnpath
*
* @author Eric Marguin <eric.marguin@dokeos.com>
* @author Julio Montoya
* @license GNU/GPL
*/
/**
* Defines the "OpenofficeDocument" child of class "learnpath".
*/
abstract class OpenofficeDocument extends learnpath
{
public $first_item = 0;
public $original_charset = 'utf-8';
public $original_locale = 'en_US.UTF-8';
public $slide_width;
public $slide_height;
/**
* Class constructor. Based on the parent constructor.
*
* @param string Course code
* @param int Learnpath ID in DB
* @param int User ID
*/
public function __construct($course_code = null, $resource_id = null, $user_id = null)
{
if (!empty($course_code) && !empty($resource_id) && !empty($user_id)) {
parent::__construct($course_code, $resource_id, $user_id);
}
}
/**
* Calls the LibreOffice server to convert the PPTs to a set of HTML + png files in a learning path.
*
* @param string $file
* @param string $action_after_conversion
* @param string $size The size to which we want the slides to be generated
*
* @return bool|int
*/
public function convert_document($file, $action_after_conversion = 'make_lp', $size = null)
{
$_course = api_get_course_info();
$this->file_name = pathinfo($file['name'], PATHINFO_FILENAME);
// Create the directory
$result = $this->generate_lp_folder($_course, $this->file_name);
// Create the directory
$this->base_work_dir = api_get_path(SYS_COURSE_PATH).$_course['path'].'/document';
///learning_path/ppt_dirname directory
$this->created_dir = $result['dir'];
if (substr($this->created_dir, -1, 1) == '/') {
$this->file_path = $this->created_dir.api_replace_dangerous_char($file['name']);
} else {
$this->file_path = $this->created_dir.'/'.api_replace_dangerous_char($file['name']);
}
$dirMode = api_get_permissions_for_new_directories();
$fileMode = api_get_permissions_for_new_files();
if (!empty($size)) {
list($w, $h) = explode('x', $size);
if (!empty($w) && !empty($h)) {
$this->slide_width = $w;
$this->slide_height = $h;
}
}
$ppt2lp_host = api_get_setting('service_ppt2lp', 'host');
if ($ppt2lp_host == 'localhost') {
move_uploaded_file($file['tmp_name'], $this->base_work_dir.'/'.$this->file_path);
$perm = api_get_setting('permissions_for_new_files');
if (IS_WINDOWS_OS) { // IS_WINDOWS_OS has been defined in main_api.lib.php
$converter_path = str_replace('/', '\\', api_get_path(SYS_PATH).'main/inc/lib/ppt2png');
$class_path = $converter_path.';'.$converter_path.'/jodconverter-2.2.2.jar;'.$converter_path.'/jodconverter-cli-2.2.2.jar';
//$cmd = 'java -cp "'.$class_path.'" DokeosConverter';
$cmd = 'java -Dfile.encoding=UTF-8 -cp "'.$class_path.'" DokeosConverter';
} else {
$converter_path = api_get_path(SYS_PATH).'main/inc/lib/ppt2png';
//$class_path = '-cp .:jodconverter-2.2.1.jar:jodconverter-cli-2.2.1.jar';
$class_path = ' -Dfile.encoding=UTF-8 -cp .:jodconverter-2.2.2.jar:jodconverter-cli-2.2.2.jar';
$cmd = 'cd '.$converter_path.' && java '.$class_path.' DokeosConverter';
}
$cmd .= ' -p '.api_get_setting('service_ppt2lp', 'port');
// Call to the function implemented by child.
$cmd .= $this->add_command_parameters();
// To allow openoffice to manipulate docs.
@chmod($this->base_work_dir, $dirMode);
@chmod($this->base_work_dir.$this->created_dir, $dirMode);
@chmod($this->base_work_dir.$this->file_path, $fileMode);
$locale = $this->original_locale; // TODO: Improve it because we're not sure this locale is present everywhere.
putenv('LC_ALL='.$locale);
$files = [];
$return = 0;
$shell = exec($cmd, $files, $return);
if ($return != 0) { // If the java application returns an error code.
switch ($return) {
case 1:
// Can't connect to openoffice.
$this->error = get_lang('CannotConnectToOpenOffice');
break;
case 2:
// Conversion failed in openoffice.
$this->error = get_lang('OogieConversionFailed');
break;
case 255:
// Conversion can't be launch because command failed.
$this->error = get_lang('OogieUnknownError');
break;
}
DocumentManager::delete_document($_course, $this->created_dir, $this->base_work_dir);
return false;
}
} else {
// get result from webservices
$result = $this->_get_remote_ppt2lp_files($file, $size);
$result = unserialize($result);
// Save remote images to server
chmod($this->base_work_dir.$this->created_dir, api_get_permissions_for_new_directories());
if (!empty($result['images'])) {
foreach ($result['images'] as $image => $img_data) {
$image_path = $this->base_work_dir.$this->created_dir;
@file_put_contents($image_path.'/'.$image, base64_decode($img_data));
@chmod($image_path.'/'.$image, $fileMode);
}
}
// files info
$files = $result['files'];
}
if (!empty($files)) {
// Create lp
$this->lp_id = learnpath::add_lp($_course['id'], $this->file_name, '', 'guess', 'manual');
// make sure we have a course code available for later
$this->cc = $_course['id'];
$this->course_info = $_course;
// Call to the function implemented by child following action_after_conversion parameter.
switch ($action_after_conversion) {
case 'make_lp':
$this->make_lp($files);
break;
case 'add_docs_to_visio':
$this->add_docs_to_visio($files);
break;
}
@chmod($this->base_work_dir, api_get_permissions_for_new_directories());
}
return $this->first_item;
}
abstract public function make_lp();
abstract public function add_docs_to_visio();
abstract public function add_command_parameters();
/**
* Used to convert copied from document.
*
* @param string $originalPath
* @param string $convertedPath
* @param string $convertedTitle
*
* @return bool
*/
public function convertCopyDocument($originalPath, $convertedPath, $convertedTitle)
{
$_course = api_get_course_info();
$ids = [];
$originalPathInfo = pathinfo($originalPath);
$convertedPathInfo = pathinfo($convertedPath);
$this->base_work_dir = $originalPathInfo['dirname'];
$this->file_path = $originalPathInfo['basename'];
$this->created_dir = $convertedPathInfo['basename'];
$ppt2lpHost = api_get_setting('service_ppt2lp', 'host');
$permissionFile = api_get_permissions_for_new_files();
$permissionFolder = api_get_permissions_for_new_directories();
if (file_exists($this->base_work_dir.'/'.$this->created_dir)) {
return $ids;
}
if ($ppt2lpHost == 'localhost') {
if (IS_WINDOWS_OS) { // IS_WINDOWS_OS has been defined in main_api.lib.php
$converterPath = str_replace('/', '\\', api_get_path(SYS_PATH).'main/inc/lib/ppt2png');
$classPath = $converterPath.';'.$converterPath.'/jodconverter-2.2.2.jar;'.$converterPath.'/jodconverter-cli-2.2.2.jar';
$cmd = 'java -Dfile.encoding=UTF-8 -jar "'.$classPath.'/jodconverter-2.2.2.jar"';
} else {
$converterPath = api_get_path(SYS_PATH).'main/inc/lib/ppt2png';
$classPath = ' -Dfile.encoding=UTF-8 -jar jodconverter-cli-2.2.2.jar';
$cmd = 'cd '.$converterPath.' && java '.$classPath.' ';
}
$cmd .= ' -p '.api_get_setting('service_ppt2lp', 'port');
// Call to the function implemented by child.
$cmd .= ' "'.$this->base_work_dir.'/'.$this->file_path.'" "'.$this->base_work_dir.'/'.$this->created_dir.'"';
// To allow openoffice to manipulate docs.
@chmod($this->base_work_dir, $permissionFolder);
@chmod($this->base_work_dir.'/'.$this->file_path, $permissionFile);
$locale = $this->original_locale; // TODO: Improve it because we're not sure this locale is present everywhere.
putenv('LC_ALL='.$locale);
$files = [];
$return = 0;
$shell = exec($cmd, $files, $return);
// TODO: Chown is not working, root keep user privileges, should be www-data
@chown($this->base_work_dir.'/'.$this->created_dir, 'www-data');
@chmod($this->base_work_dir.'/'.$this->created_dir, $permissionFile);
if ($return != 0) { // If the java application returns an error code.
switch ($return) {
case 1:
// Can't connect to openoffice.
$this->error = get_lang('CannotConnectToOpenOffice');
break;
case 2:
// Conversion failed in openoffice.
$this->error = get_lang('OogieConversionFailed');
break;
case 255:
// Conversion can't be launch because command failed.
$this->error = get_lang('OogieUnknownError');
break;
}
DocumentManager::delete_document($_course, $this->created_dir, $this->base_work_dir);
return false;
}
} else {
/*
* @TODO Create method to use webservice
// get result from webservices
$result = $this->_get_remote_ppt2lp_files($file);
$result = unserialize(base64_decode($result));
// Save remote images to server
chmod($this->base_work_dir.$this->created_dir, api_get_permissions_for_new_directories());
if (!empty($result['images'])) {
foreach ($result['images'] as $image => $img_data) {
$image_path = $this->base_work_dir.$this->created_dir;
@file_put_contents($image_path . '/' . $image, base64_decode($img_data));
@chmod($image_path . '/' . $image, 0777);
}
}
// files info
$files = $result['files'];
*/
}
if (file_exists($this->base_work_dir.'/'.$this->created_dir)) {
// Register Files to Document tool
$ids[] = add_document(
$_course,
'/'.$this->created_dir,
'file',
filesize($this->base_work_dir.'/'.$this->created_dir),
$convertedTitle,
sprintf(
get_lang('FileConvertedFromXToY'),
strtoupper($originalPathInfo['extension']),
strtoupper($convertedPathInfo['extension'])
),
0,
true,
null,
api_get_session_id()
);
chmod($this->base_work_dir, $permissionFolder);
}
return $ids;
}
/**
* Get images files from remote host (with webservices).
*
* @param array $file current ppt file details
* @param string $size The expected final size of the rendered slides
*
* @return array images files
*/
private function _get_remote_ppt2lp_files($file, $size = null)
{
// host
$ppt2lp_host = api_get_setting('service_ppt2lp', 'host');
// SOAP URI (just the host)
$matches = [];
$uri = '';
$result = preg_match('/^([a-zA-Z0-9]*):\/\/([^\/]*)\//', $ppt2lp_host, $matches);
if ($result) {
$uri = $matches[1].'://'.$matches[2].'/';
} else {
$uri = $ppt2lp_host;
}
// secret key
$secret_key = sha1(api_get_setting('service_ppt2lp', 'ftp_password'));
// client
$options = [
'location' => $ppt2lp_host,
'uri' => $uri,
'trace' => 1,
'exceptions' => true,
'cache_wsdl' => WSDL_CACHE_NONE,
'keep_alive' => false,
'features' => SOAP_SINGLE_ELEMENT_ARRAYS,
'compression' => SOAP_COMPRESSION_ACCEPT | SOAP_COMPRESSION_GZIP | 9,
];
if (substr($ppt2lp_host, 0, 5) === 'https') {
$options['ssl_method'] = SOAP_SSL_METHOD_TLS;
// If using SSL, please note that *not* supporting the SSLv2
// (broken in terms of security), the server tends to generate
// the following issue:
// SoapClient::__doRequest(): SSL: Connection reset by peer
}
$client = new SoapClient(null, $options);
$result = '';
$file_data = base64_encode(file_get_contents($file['tmp_name']));
$file_name = $file['name'];
if (empty($size)) {
$size = api_get_setting('service_ppt2lp', 'size');
}
$params = [
'secret_key' => $secret_key,
'file_data' => $file_data,
'file_name' => $file_name,
'service_ppt2lp_size' => $size,
];
try {
$result = $client->wsConvertPpt($params);
} catch (Exception $e) {
error_log('['.time().'] Chamilo SOAP call error: '.$e->getMessage());
}
// Make sure we destroy the SOAP client as it may generate SSL connection
// binding issue (if using SSL)
unset($client);
return $result;
}
}