Classes/class-upgrade.php

   1 <?php
   2
   3 class Upgrade
   4 {
   5     public $web_dir;
   6     private $temp_dir;
   7     private static $temp_extracted_dir;
   8     public static $upgrade_available;
   9     public static $last_check;
  10     public $error;
  11     public static $latest_version;
  12     function __construct()
  13     {
  14         global $config;
  15         read_config_db();
  16         if (!get_config('upgrade'))
  17         {
  18             $config['upgrade'] =[];
  19             write_config('upgrade');
  20         }
  21
  22         $tok = split(__DIR__, '/');
  23         unset($tok[count($tok) - 1]);
  24         $this->web_dir = implode('/',$tok).'/';
  25
  26         /** prepare the temp directory */
  27         $temp_dir = $this->web_dir."panel_upgrade";
  28         $temp_dir .= ($temp_dir[strlen($temp_dir) - 1] != '/') ? "/" : "";
  29         if (file_exists($temp_dir)) {
  30             deleteDirectoryContents($temp_dir);
  31             rmdir($temp_dir);
  32         }
  33         $mkdir = mkdir($temp_dir, 0755, true);
  34
  35         $this->temp_dir = $mkdir ? $temp_dir : NULL;
  36         $this->error = $mkdir ? NULL : "Could not create directory: $temp_dir";
  37         Upgrade::$upgrade_available = false;
  38         if ($this->error)
  39             error_log($this->error);
  40     }
  41
  42     /** Checks for a new upgrade */
  43     function checkForNew()
  44     {
  45         global $config;
  46         read_config_db();
  47         $last_check = &$config['upgrade']['last_check'];
  48         if (isset($last_check) && time() - $last_check < 300) // only check every 15 mins
  49         {
  50             error_log("Skipping upgrade check, checked ".time() - $last_check." seconds ago");
  51             return false;
  52         }
  53         error_log(time()." - ".$last_check." = ".time()-$last_check);
  54         $apiUrl = "https://api.github.com/repos/unrealircd/unrealircd-webpanel/releases";
  55         $response = file_get_contents($apiUrl, false, stream_context_create(
  56                 ["http" => ["method" => "GET", "header" => "User-agent: UnrealIRCd Webpanel"]]
  57             ));
  58
  59         if ($response === false)
  60         {
  61             $this->error = "Couldn't check github.";
  62             return false;
  63         }
  64         $data = json_decode($response, true);
  65         $latest = $data[count($data) - 1];
  66         $config['upgrade']['latest_version'] = $latest['tag_name'];
  67         $last_check = time();
  68         $config['upgrade']['download_link'] = $latest['zipball_url'];
  69         write_config('upgrade');
  70         Upgrade::$upgrade_available = (float)$latest['tag_name'] > WEBPANEL_VERSION ? true : false;
  71     }
  72
  73     function downloadUpgradeZip()
  74     {
  75         $ch = curl_init(get_config('upgrade::download_link'));
  76         $fp = fopen($this->temp_dir."unrealircd-webpanel-upgrade.zip", 'w+');
  77
  78         curl_setopt($ch, CURLOPT_FILE, $fp);
  79         curl_setopt($ch, CURLOPT_TIMEOUT, 60);
  80         curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
  81         curl_setopt($ch, CURLOPT_HTTPHEADER, [
  82             'User-Agent: UnrealIRCd Webpanel',
  83         ]);
  84         $success = curl_exec($ch);
  85         $code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
  86
  87         if ($code == "403" || $code == "404")
  88         {
  89             $this->error ="Unable to download";
  90         }
  91         curl_close($ch);
  92         fclose($fp);
  93
  94         return $success;
  95     }
  96     function extractZip() {
  97         $zip = new ZipArchive;
  98         if ($zip->open($this->temp_dir."unrealircd-webpanel-upgrade.zip") === true)
  99         {
 100             $zip->extractTo("$this->temp_dir");
 101             $zip->close();
 102             self::$temp_extracted_dir = findOnlyDirectory($this->temp_dir);
 103             error_log(self::$temp_extracted_dir);
 104             return true;
 105         } else {
 106             return false;
 107         }
 108     }
 109     function cleanupOldFiles()
 110     {
 111         foreach ($this->compareAndGetFilesToDelete() as $file)
 112         {
 113             unlink("$this->web_dir$file");
 114             error_log("Deleting: $file");
 115         }
 116     }
 117     function compareAndGetFilesToDelete() : array
 118     {
 119         $currentFiles = $this->listFiles($this->web_dir);
 120         $updateFiles = $this->listFiles(self::$temp_extracted_dir);
 121         $filesToDelete = array_diff($currentFiles, $updateFiles);
 122         $filesToActuallyDelete = [];
 123         error_log("Comparing... Files to delete:");
 124         foreach ($filesToDelete as $file)
 125         {
 126             // skip the relevant directories
 127             if (str_starts_with($file, "panel_upgrade/")
 128              || str_starts_with($file, "vendor/")
 129              || str_starts_with($file, "config/")
 130              || str_starts_with($file, "data/")
 131              || str_starts_with($file, "plugins/"))
 132                 continue;
 133             $filesToActuallyDelete[] = $file;
 134         }
 135         return $filesToActuallyDelete;
 136     }
 137
 138     function extractToWebdir()
 139     {
 140         $zip = new ZipArchive;
 141         if ($zip->open($this->temp_dir."unrealircd-webpanel-upgrade.zip") === true)
 142         {
 143             $extracted = $zip->extractTo($this->web_dir);
 144             $zip->close();
 145             if (!$extracted)
 146             {
 147                 error_log("Cannot extract to web directory. Permission denied.");
 148                 return false;
 149             }
 150             return true;
 151         } else {
 152             error_log("Cannot open zip at $this->temp_dir");
 153             return false;
 154         }
 155     }
 156
 157     /**
 158      * Cleans up the extracted update files
 159      * @return void
 160      */
 161     function cleanupDownloadFiles()
 162     {
 163         $ex_dir = self::$temp_extracted_dir ?? findOnlyDirectory($this->temp_dir);
 164         deleteDirectoryContents($ex_dir);
 165         rmdir($ex_dir);
 166     }
 167
 168     function listFiles($dir) {
 169         $files = [];
 170         $iterator = new RecursiveIteratorIterator(new RecursiveDirectoryIterator($dir));
 171         foreach ($iterator as $file)
 172         {
 173             if ($file->isFile())
 174             {
 175                 $f = substr($file->getPathname(), strlen($dir));
 176                 if ($f[0] == "/") $f = substr($f,1);
 177
 178                 $files[] = $f;
 179             }
 180         }
 181         return $files;
 182     }
 183 }
 184
 185
 186 function findOnlyDirectory($topDir) {
 187     // Ensure the directory exists and is indeed a directory
 188     if (!is_dir($topDir)) {
 189         die("The specified path is not a directory.");
 190     }
 191
 192     // Open the directory
 193     $dirHandle = opendir($topDir);
 194     if ($dirHandle === false) {
 195         die("Unable to open directory.");
 196     }
 197
 198     $directories = [];
 199
 200     // Read through the directory contents
 201     while (($entry = readdir($dirHandle)) !== false) {
 202         $fullPath = $topDir . DIRECTORY_SEPARATOR . $entry;
 203         // Check if the entry is a directory and not . or ..
 204         if (is_dir($fullPath) && $entry !== '.' && $entry !== '..') {
 205             $directories[] = $fullPath;
 206         }
 207     }
 208
 209     // Close the directory handle
 210     closedir($dirHandle);
 211
 212     // Check if there is exactly one directory
 213     if (count($directories) === 1) {
 214         return $directories[0];
 215     } elseif (count($directories) === 0) {
 216         return "No directories found after extracting. Possibly missing php-zip extention. Aborting upgrade.";
 217     } else {
 218         return "Multiple directories found. Previous cleanup was unsuccessful for some reason, maybe a permissions error? Aborting upgrade.";
 219     }
 220 }
 221
 222
 223 function deleteDirectoryContents($dir) {
 224     error_log("Deleting directory contents at $dir");
 225     if (!is_dir($dir)) {
 226         echo "The provided path is not a directory.";
 227         return false;
 228     }
 229
 230     // Open the directory
 231     $handle = opendir($dir);
 232     if ($handle === false) {
 233         echo "Failed to open the directory.";
 234         return false;
 235     }
 236
 237     // Loop through the directory contents
 238     while (($item = readdir($handle)) !== false) {
 239         // Skip the special entries "." and ".."
 240         if ($item == "." || $item == "..") {
 241             continue;
 242         }
 243
 244         $itemPath = $dir."/".$item;
 245
 246         // If the item is a directory, recursively delete its contents
 247         if (is_dir($itemPath)) {
 248             deleteDirectoryContents($itemPath);
 249             // Remove the empty directory
 250             rmdir($itemPath);
 251         } else {
 252             // If the item is a file, delete it
 253             unlink($itemPath);
 254         }
 255     }
 256
 257     // Close the directory handle
 258     closedir($handle);
 259
 260     return true;
 261 }