extensions.php

<?php
$tmppath="/tmp/manager/extensions";
//$sn = rtrim(shell_exec('ioreg -c IOPlatformExpertDevice -d 2 | awk -F\" \'/IOPlatformSerialNumber/{print $(NF-1)}\''), PHP_EOL);

$user = rtrim(shell_exec('stat -f "%Su" /dev/console'), PHP_EOL); //get current user
$directory = '/Users/'.$user.'/Library/Application\ Support/Google/Chrome/';
$output = shell_exec('ls '. $directory);

$dirs = explode(PHP_EOL, $output);
$dirs_extensions = array();

foreach($dirs as $dir) { //find the directories that may contain extensions (Profile X or Default)
    if(strpos($dir, "Profile ") !== false || strpos($dir, "Default") !== false) {
        array_push($dirs_extensions, $dir);
    }
}

$extensions = array();
foreach($dirs_extensions as $dir) {
    $exec = 'find ' . $directory . str_replace(" ", "\ ", $dir) . '/Extensions$d -maxdepth 3 -name "manifest.json"';
    $output = shell_exec($exec);
    $jsons = explode(PHP_EOL, $output);

    foreach($jsons as $manifest) {
        if($manifest != '') {
            $json_exec = 'cat "' . $manifest. '"';
            $str = shell_exec($json_exec);
            $json = json_decode($str, true);

            $id_str = substr(strstr($json_exec, '/Extensions/'), 12);
            $id = strstr($id_str, '/', true);

            $name = $json['name'];
            $pos = strpos($name, '__');
            if ($pos !== false) { //name is a placeholder
                $placeholder = $name = substr($json['name'], 6, -2);

                    $exec = 'find ' . $directory . str_replace(" ", "\ ", $dir) . '/Extensions/' . $id . '/*/_locales/en*$d -maxdepth 3 -name "messages.json"'; //find the json that contains the string constants
                    $output = shell_exec($exec);
                    if(!is_null($output)) {//found the file
                        $messages = explode(PHP_EOL, $output);
                        $exec = 'cat ' . str_replace(" ", "\ ", $messages[0]);
                        $output = shell_exec($exec);
                        $jsonName = json_decode($output, true);

                        if(isset($jsonName[$placeholder])){
                            $name = $jsonName[$placeholder]['message'];
                            if(is_null($name)) {
                                $name = $jsonName[strtolower($placeholder)]['message'];
                            }
                        }
                    } else {
                        $name = $json['name'];
                    }
            }//end if
            $extensions[] = array('id' => $id, 'name' => $name, 'version' => $json['version']);
        }//end if
    }//end foreach
}//end foreach

$extensions = json_encode($extensions, 128);

file_put_contents($tmppath.'/extensions.json', $extensions);