src/Core/Addon.php

   1 <?php
   2 /**
   3  * @file src/Core/Addon.php
   4  */
   5 namespace Friendica\Core;
   6
   7 use Friendica\BaseObject;
   8 use Friendica\Database\DBA;
   9
  10 /**
  11  * Some functions to handle addons
  12  */
  13 class Addon extends BaseObject
  14 {
  15         /**
  16          * The addon sub-directory
  17          * @var string
  18          */
  19         const DIRECTORY = 'addon';
  20
  21         /**
  22          * List of the names of enabled addons
  23          *
  24          * @var array
  25          */
  26         private static $addons = [];
  27
  28         /**
  29          * @brief Synchronize addons:
  30          *
  31          * system.addon contains a comma-separated list of names
  32          * of addons which are used on this system.
  33          * Go through the database list of already installed addons, and if we have
  34          * an entry, but it isn't in the config list, call the uninstall procedure
  35          * and mark it uninstalled in the database (for now we'll remove it).
  36          * Then go through the config list and if we have a addon that isn't installed,
  37          * call the install procedure and add it to the database.
  38          *
  39          */
  40         public static function loadAddons()
  41         {
  42                 $installed_addons = [];
  43
  44                 $r = DBA::select('addon', [], ['installed' => 1]);
  45                 if (DBA::isResult($r)) {
  46                         $installed_addons = DBA::toArray($r);
  47                 }
  48
  49                 $addons = Config::get('system', 'addon');
  50                 $addons_arr = [];
  51
  52                 if ($addons) {
  53                         $addons_arr = explode(',', str_replace(' ', '', $addons));
  54                 }
  55
  56                 self::$addons = $addons_arr;
  57
  58                 $installed_arr = [];
  59
  60                 foreach ($installed_addons as $addon) {
  61                         if (!self::isEnabled($addon['name'])) {
  62                                 self::uninstall($addon['name']);
  63                         } else {
  64                                 $installed_arr[] = $addon['name'];
  65                         }
  66                 }
  67
  68                 foreach (self::$addons as $p) {
  69                         if (!in_array($p, $installed_arr)) {
  70                                 self::install($p);
  71                         }
  72                 }
  73         }
  74
  75         /**
  76          * @brief uninstalls an addon.
  77          *
  78          * @param string $addon name of the addon
  79          * @return void
  80          * @throws \Exception
  81          */
  82         public static function uninstall($addon)
  83         {
  84                 Logger::notice("Addon {addon}: {action}", ['action' => 'uninstall', 'addon' => $addon]);
  85                 DBA::delete('addon', ['name' => $addon]);
  86
  87                 @include_once('addon/' . $addon . '/' . $addon . '.php');
  88                 if (function_exists($addon . '_uninstall')) {
  89                         $func = $addon . '_uninstall';
  90                         $func();
  91                 }
  92
  93                 unset(self::$addons[array_search($addon, self::$addons)]);
  94         }
  95
  96         /**
  97          * @brief installs an addon.
  98          *
  99          * @param string $addon name of the addon
 100          * @return bool
 101          * @throws \Exception
 102          */
 103         public static function install($addon)
 104         {
 105                 // silently fail if addon was removed
 106
 107                 if (!file_exists('addon/' . $addon . '/' . $addon . '.php')) {
 108                         return false;
 109                 }
 110                 Logger::notice("Addon {addon}: {action}", ['action' => 'install', 'addon' => $addon]);
 111                 $t = @filemtime('addon/' . $addon . '/' . $addon . '.php');
 112                 @include_once('addon/' . $addon . '/' . $addon . '.php');
 113                 if (function_exists($addon . '_install')) {
 114                         $func = $addon . '_install';
 115                         $func();
 116
 117                         $addon_admin = (function_exists($addon . "_addon_admin") ? 1 : 0);
 118
 119                         DBA::insert('addon', ['name' => $addon, 'installed' => true,
 120                                 'timestamp' => $t, 'plugin_admin' => $addon_admin]);
 121
 122                         // we can add the following with the previous SQL
 123                         // once most site tables have been updated.
 124                         // This way the system won't fall over dead during the update.
 125
 126                         if (file_exists('addon/' . $addon . '/.hidden')) {
 127                                 DBA::update('addon', ['hidden' => true], ['name' => $addon]);
 128                         }
 129
 130                         if (!self::isEnabled($addon)) {
 131                                 self::$addons[] = $addon;
 132                         }
 133                         return true;
 134                 } else {
 135                         Logger::error("Addon {addon}: {action} failed", ['action' => 'uninstall', 'addon' => $addon]);
 136                         return false;
 137                 }
 138         }
 139
 140         /**
 141          * reload all updated addons
 142          */
 143         public static function reload()
 144         {
 145                 $addons = Config::get('system', 'addon');
 146                 if (strlen($addons)) {
 147                         $r = DBA::select('addon', [], ['installed' => 1]);
 148                         if (DBA::isResult($r)) {
 149                                 $installed = DBA::toArray($r);
 150                         } else {
 151                                 $installed = [];
 152                         }
 153
 154                         $addon_list = explode(',', $addons);
 155
 156                         if (count($addon_list)) {
 157                                 foreach ($addon_list as $addon) {
 158                                         $addon = trim($addon);
 159                                         $fname = 'addon/' . $addon . '/' . $addon . '.php';
 160
 161                                         if (file_exists($fname)) {
 162                                                 $t = @filemtime($fname);
 163                                                 foreach ($installed as $i) {
 164                                                         if (($i['name'] == $addon) && ($i['timestamp'] != $t)) {
 165
 166                                                                 Logger::notice("Addon {addon}: {action}", ['action' => 'reload', 'addon' => $i['name']]);
 167                                                                 @include_once($fname);
 168
 169                                                                 if (function_exists($addon . '_uninstall')) {
 170                                                                         $func = $addon . '_uninstall';
 171                                                                         $func();
 172                                                                 }
 173                                                                 if (function_exists($addon . '_install')) {
 174                                                                         $func = $addon . '_install';
 175                                                                         $func();
 176                                                                 }
 177                                                                 DBA::update('addon', ['timestamp' => $t], ['id' => $i['id']]);
 178                                                         }
 179                                                 }
 180                                         }
 181                                 }
 182                         }
 183                 }
 184         }
 185
 186         /**
 187          * @brief Parse addon comment in search of addon infos.
 188          *
 189          * like
 190          * \code
 191          *   * Name: addon
 192          *   * Description: An addon which plugs in
 193          * . * Version: 1.2.3
 194          *   * Author: John <profile url>
 195          *   * Author: Jane <email>
 196          *   * Maintainer: Jess <email>
 197          *   *
 198          *   *\endcode
 199          * @param string $addon the name of the addon
 200          * @return array with the addon information
 201          * @throws \Exception
 202          */
 203         public static function getInfo($addon)
 204         {
 205                 $a = self::getApp();
 206
 207                 $info = [
 208                         'name' => $addon,
 209                         'description' => "",
 210                         'author' => [],
 211                         'maintainer' => [],
 212                         'version' => "",
 213                         'status' => ""
 214                 ];
 215
 216                 if (!is_file("addon/$addon/$addon.php")) {
 217                         return $info;
 218                 }
 219
 220                 $stamp1 = microtime(true);
 221                 $f = file_get_contents("addon/$addon/$addon.php");
 222                 $a->saveTimestamp($stamp1, "file");
 223
 224                 $r = preg_match("|/\*.*\*/|msU", $f, $m);
 225
 226                 if ($r) {
 227                         $ll = explode("\n", $m[0]);
 228                         foreach ($ll as $l) {
 229                                 $l = trim($l, "\t\n\r */");
 230                                 if ($l != "") {
 231                                         $addon_info = array_map("trim", explode(":", $l, 2));
 232                                         if (count($addon_info) < 2) {
 233                                                 continue;
 234                                         }
 235
 236                                         list($type, $v) = $addon_info;
 237                                         $type = strtolower($type);
 238                                         if ($type == "author" || $type == "maintainer") {
 239                                                 $r = preg_match("|([^<]+)<([^>]+)>|", $v, $m);
 240                                                 if ($r) {
 241                                                         $info[$type][] = ['name' => $m[1], 'link' => $m[2]];
 242                                                 } else {
 243                                                         $info[$type][] = ['name' => $v];
 244                                                 }
 245                                         } else {
 246                                                 if (array_key_exists($type, $info)) {
 247                                                         $info[$type] = $v;
 248                                                 }
 249                                         }
 250                                 }
 251                         }
 252                 }
 253                 return $info;
 254         }
 255
 256         /**
 257          * Checks if the provided addon is enabled
 258          *
 259          * @param string $addon
 260          * @return boolean
 261          */
 262         public static function isEnabled($addon)
 263         {
 264                 return in_array($addon, self::$addons);
 265         }
 266
 267         /**
 268          * Returns a list of the enabled addon names
 269          *
 270          * @return array
 271          */
 272         public static function getEnabledList()
 273         {
 274                 return self::$addons;
 275         }
 276
 277         /**
 278          * Saves the current enabled addon list in the system.addon config key
 279          *
 280          * @return boolean
 281          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 282          */
 283         public static function saveEnabledList()
 284         {
 285                 return Config::set("system", "addon", implode(", ", self::$addons));
 286         }
 287
 288         /**
 289          * Returns the list of non-hidden enabled addon names
 290          *
 291          * @return array
 292          * @throws \Exception
 293          */
 294         public static function getVisibleList()
 295         {
 296                 $visible_addons = [];
 297                 $stmt = DBA::select('addon', ['name'], ['hidden' => false, 'installed' => true]);
 298                 if (DBA::isResult($stmt)) {
 299                         foreach (DBA::toArray($stmt) as $addon) {
 300                                 $visible_addons[] = $addon['name'];
 301                         }
 302                 }
 303
 304                 return $visible_addons;
 305         }
 306
 307         /**
 308          * Shim of Hook::register left for backward compatibility purpose.
 309          *
 310          * @see        Hook::register
 311          * @deprecated since version 2018.12
 312          * @param string $hook     the name of the hook
 313          * @param string $file     the name of the file that hooks into
 314          * @param string $function the name of the function that the hook will call
 315          * @param int    $priority A priority (defaults to 0)
 316          * @return mixed|bool
 317          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 318          */
 319         public static function registerHook($hook, $file, $function, $priority = 0)
 320         {
 321                 return Hook::register($hook, $file, $function, $priority);
 322         }
 323
 324         /**
 325          * Shim of Hook::unregister left for backward compatibility purpose.
 326          *
 327          * @see        Hook::unregister
 328          * @deprecated since version 2018.12
 329          * @param string $hook     the name of the hook
 330          * @param string $file     the name of the file that hooks into
 331          * @param string $function the name of the function that the hook called
 332          * @return boolean
 333          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 334          */
 335         public static function unregisterHook($hook, $file, $function)
 336         {
 337                 return Hook::unregister($hook, $file, $function);
 338         }
 339
 340         /**
 341          * Shim of Hook::callAll left for backward-compatibility purpose.
 342          *
 343          * @see        Hook::callAll
 344          * @deprecated since version 2018.12
 345          * @param string        $name of the hook to call
 346          * @param string|array &$data to transmit to the callback handler
 347          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 348          */
 349         public static function callHooks($name, &$data = null)
 350         {
 351                 Hook::callAll($name, $data);
 352         }
 353 }