src/Core/Installer.php

   1 <?php
   2 /**
   3  * @file src/Core/Install.php
   4  */
   5 namespace Friendica\Core;
   6
   7 use DOMDocument;
   8 use Exception;
   9 use Friendica\Core\Config\Cache\IConfigCache;
  10 use Friendica\Database\DBA;
  11 use Friendica\Database\DBStructure;
  12 use Friendica\Object\Image;
  13 use Friendica\Util\Logger\VoidLogger;
  14 use Friendica\Util\BasePath;
  15 use Friendica\Util\Network;
  16 use Friendica\Util\Profiler;
  17 use Friendica\Util\Strings;
  18
  19 /**
  20  * Contains methods for installation purpose of Friendica
  21  */
  22 class Installer
  23 {
  24         // Default values for the install page
  25         const DEFAULT_LANG = 'en';
  26         const DEFAULT_TZ   = 'America/Los_Angeles';
  27         const DEFAULT_HOST = 'localhost';
  28
  29         /**
  30          * @var array the check outcomes
  31          */
  32         private $checks;
  33
  34         /**
  35          * @var string The path to the PHP binary
  36          */
  37         private $phppath = null;
  38
  39         /**
  40          * Returns all checks made
  41          *
  42          * @return array the checks
  43          */
  44         public function getChecks()
  45         {
  46                 return $this->checks;
  47         }
  48
  49         /**
  50          * Returns the PHP path
  51          *
  52          * @return string the PHP Path
  53          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
  54          */
  55         public function getPHPPath()
  56         {
  57                 // if not set, determine the PHP path
  58                 if (!isset($this->phppath)) {
  59                         $this->checkPHP();
  60                         $this->resetChecks();
  61                 }
  62
  63                 return $this->phppath;
  64         }
  65
  66         /**
  67          * Resets all checks
  68          */
  69         public function resetChecks()
  70         {
  71                 $this->checks = [];
  72         }
  73
  74         /**
  75          * Install constructor.
  76          *
  77          */
  78         public function __construct()
  79         {
  80                 $this->checks = [];
  81         }
  82
  83         /**
  84          * Checks the current installation environment. There are optional and mandatory checks.
  85          *
  86          * @param string $baseurl The baseurl of Friendica
  87          * @param string $phpath  Optional path to the PHP binary
  88          *
  89          * @return bool if the check succeed
  90          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
  91          */
  92         public function checkEnvironment($baseurl, $phpath = null)
  93         {
  94                 $returnVal = true;
  95
  96                 if (isset($phpath)) {
  97                         if (!$this->checkPHP($phpath)) {
  98                                 $returnVal = false;
  99                         }
 100                 }
 101
 102                 if (!$this->checkFunctions()) {
 103                         $returnVal = false;
 104                 }
 105
 106                 if (!$this->checkImagick()) {
 107                         $returnVal = false;
 108                 }
 109
 110                 if (!$this->checkLocalIni()) {
 111                         $returnVal = false;
 112                 }
 113
 114                 if (!$this->checkSmarty3()) {
 115                         $returnVal = false;
 116                 }
 117
 118                 if (!$this->checkKeys()) {
 119                         $returnVal = false;
 120                 }
 121
 122                 if (!$this->checkHtAccess($baseurl)) {
 123                         $returnVal = false;
 124                 }
 125
 126                 return $returnVal;
 127         }
 128
 129         /**
 130          * Executes the installation of Friendica in the given environment.
 131          * - Creates `config/local.config.php`
 132          * - Installs Database Structure
 133          *
 134          * @param IConfigCache $configCache The config cache with all config relevant information
 135          *
 136          * @return bool true if the config was created, otherwise false
 137          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 138          */
 139         public function createConfig(IConfigCache $configCache)
 140         {
 141                 $basepath = $configCache->get('system', 'basepath');
 142
 143                 $url = $configCache->get('system', 'url');
 144
 145                 $tpl = Renderer::getMarkupTemplate('local.config.tpl');
 146                 $txt = Renderer::replaceMacros($tpl, [
 147                         '$dbhost'    => $configCache->get('database', 'hostname'),
 148                         '$dbuser'    => $configCache->get('database', 'username'),
 149                         '$dbpass'    => $configCache->get('database', 'password'),
 150                         '$dbdata'    => $configCache->get('database', 'database'),
 151
 152                         '$phpath'    => $configCache->get('config', 'php_path'),
 153                         '$adminmail' => $configCache->get('config', 'admin_email'),
 154                         '$hostname'  => $configCache->get('config', 'hostname'),
 155
 156                         '$urlpath'   => $configCache->get('system', 'urlpath'),
 157                         '$baseurl'   => $url,
 158                         '$sslpolicy' => $configCache->get('system', 'ssl_policy'),
 159                         '$basepath'  => $basepath,
 160                         '$timezone'  => $configCache->get('system', 'default_timezone'),
 161                         '$language'  => $configCache->get('system', 'language'),
 162                 ], false);
 163
 164                 $result = file_put_contents($basepath . DIRECTORY_SEPARATOR . 'config' . DIRECTORY_SEPARATOR . 'local.config.php', $txt);
 165
 166                 if (!$result) {
 167                         $this->addCheck(L10n::t('The database configuration file "config/local.config.php" could not be written. Please use the enclosed text to create a configuration file in your web server root.'), false, false, htmlentities($txt, ENT_COMPAT, 'UTF-8'));
 168                 }
 169
 170                 return $result;
 171         }
 172
 173         /***
 174          * Installs the DB-Scheme for Friendica
 175          *
 176          * @param string $basePath The base path of this application
 177          *
 178          * @return bool true if the installation was successful, otherwise false
 179          * @throws Exception
 180          */
 181         public function installDatabase($basePath)
 182         {
 183                 $result = DBStructure::update($basePath, false, true, true);
 184
 185                 if ($result) {
 186                         $txt = L10n::t('You may need to import the file "database.sql" manually using phpmyadmin or mysql.') . EOL;
 187                         $txt .= L10n::t('Please see the file "INSTALL.txt".');
 188
 189                         $this->addCheck($txt, false, true, htmlentities($result, ENT_COMPAT, 'UTF-8'));
 190
 191                         return false;
 192                 }
 193
 194                 return true;
 195         }
 196
 197         /**
 198          * Adds new checks to the array $checks
 199          *
 200          * @param string $title The title of the current check
 201          * @param bool $status 1 = check passed, 0 = check not passed
 202          * @param bool $required 1 = check is mandatory, 0 = check is optional
 203          * @param string $help A help-string for the current check
 204          * @param string $error_msg Optional. A error message, if the current check failed
 205          */
 206         private function addCheck($title, $status, $required, $help, $error_msg = "")
 207         {
 208                 array_push($this->checks, [
 209                         'title' => $title,
 210                         'status' => $status,
 211                         'required' => $required,
 212                         'help' => $help,
 213                         'error_msg' => $error_msg,
 214                 ]);
 215         }
 216
 217         /**
 218          * PHP Check
 219          *
 220          * Checks the PHP environment.
 221          *
 222          * - Checks if a PHP binary is available
 223          * - Checks if it is the CLI version
 224          * - Checks if "register_argc_argv" is enabled
 225          *
 226          * @param string $phppath  Optional. The Path to the PHP-Binary
 227          * @param bool   $required Optional. If set to true, the PHP-Binary has to exist (Default false)
 228          *
 229          * @return bool false if something required failed
 230          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 231          */
 232         public function checkPHP($phppath = null, $required = false)
 233         {
 234                 $passed3 = false;
 235
 236                 if (!isset($phppath)) {
 237                         $phppath = 'php';
 238                 }
 239
 240                 $passed = file_exists($phppath);
 241                 if (!$passed) {
 242                         $phppath = trim(shell_exec('which ' . $phppath));
 243                         $passed = strlen($phppath);
 244                 }
 245
 246                 $help = "";
 247                 if (!$passed) {
 248                         $help .= L10n::t('Could not find a command line version of PHP in the web server PATH.') . EOL;
 249                         $help .= L10n::t("If you don't have a command line version of PHP installed on your server, you will not be able to run the background processing. See <a href='https://github.com/friendica/friendica/blob/master/doc/Install.md#set-up-the-worker'>'Setup the worker'</a>") . EOL;
 250                         $help .= EOL . EOL;
 251                         $tpl = Renderer::getMarkupTemplate('field_input.tpl');
 252                         /// @todo Separate backend Installer class and presentation layer/view
 253                         $help .= Renderer::replaceMacros($tpl, [
 254                                 '$field' => ['config-php_path', L10n::t('PHP executable path'), $phppath, L10n::t('Enter full path to php executable. You can leave this blank to continue the installation.')],
 255                         ]);
 256                         $phppath = "";
 257                 }
 258
 259                 $this->addCheck(L10n::t('Command line PHP') . ($passed ? " (<tt>$phppath</tt>)" : ""), $passed, false, $help);
 260
 261                 if ($passed) {
 262                         $cmd = "$phppath -v";
 263                         $result = trim(shell_exec($cmd));
 264                         $passed2 = (strpos($result, "(cli)") !== false);
 265                         list($result) = explode("\n", $result);
 266                         $help = "";
 267                         if (!$passed2) {
 268                                 $help .= L10n::t("PHP executable is not the php cli binary \x28could be cgi-fgci version\x29") . EOL;
 269                                 $help .= L10n::t('Found PHP version: ') . "<tt>$result</tt>";
 270                         }
 271                         $this->addCheck(L10n::t('PHP cli binary'), $passed2, true, $help);
 272                 } else {
 273                         // return if it was required
 274                         return !$required;
 275                 }
 276
 277                 if ($passed2) {
 278                         $str = Strings::getRandomName(8);
 279                         $cmd = "$phppath bin/testargs.php $str";
 280                         $result = trim(shell_exec($cmd));
 281                         $passed3 = $result == $str;
 282                         $help = "";
 283                         if (!$passed3) {
 284                                 $help .= L10n::t('The command line version of PHP on your system does not have "register_argc_argv" enabled.') . EOL;
 285                                 $help .= L10n::t('This is required for message delivery to work.');
 286                         } else {
 287                                 $this->phppath = $phppath;
 288                         }
 289
 290                         $this->addCheck(L10n::t('PHP register_argc_argv'), $passed3, true, $help);
 291                 }
 292
 293                 // passed2 & passed3 are required if first check passed
 294                 return $passed2 && $passed3;
 295         }
 296
 297         /**
 298          * OpenSSL Check
 299          *
 300          * Checks the OpenSSL Environment
 301          *
 302          * - Checks, if the command "openssl_pkey_new" is available
 303          *
 304          * @return bool false if something required failed
 305          */
 306         public function checkKeys()
 307         {
 308                 $help = '';
 309                 $res = false;
 310                 $status = true;
 311
 312                 if (function_exists('openssl_pkey_new')) {
 313                         $res = openssl_pkey_new([
 314                                 'digest_alg' => 'sha1',
 315                                 'private_key_bits' => 4096,
 316                                 'encrypt_key' => false
 317                         ]);
 318                 }
 319
 320                 // Get private key
 321                 if (!$res) {
 322                         $help .= L10n::t('Error: the "openssl_pkey_new" function on this system is not able to generate encryption keys') . EOL;
 323                         $help .= L10n::t('If running under Windows, please see "http://www.php.net/manual/en/openssl.installation.php".');
 324                         $status = false;
 325                 }
 326                 $this->addCheck(L10n::t('Generate encryption keys'), $res, true, $help);
 327
 328                 return $status;
 329         }
 330
 331         /**
 332          * PHP basic function check
 333          *
 334          * @param string $name The name of the function
 335          * @param string $title The (localized) title of the function
 336          * @param string $help The (localized) help of the function
 337          * @param boolean $required If true, this check is required
 338          *
 339          * @return bool false, if the check failed
 340          */
 341         private function checkFunction($name, $title, $help, $required)
 342         {
 343                 $currHelp = '';
 344                 $status = true;
 345                 if (!function_exists($name)) {
 346                         $currHelp = $help;
 347                         $status = false;
 348                 }
 349                 $this->addCheck($title, $status, $required, $currHelp);
 350
 351                 return $status || (!$status && !$required);
 352         }
 353
 354         /**
 355          * PHP functions Check
 356          *
 357          * Checks the following PHP functions
 358          * - libCurl
 359          * - GD Graphics
 360          * - OpenSSL
 361          * - PDO or MySQLi
 362          * - mb_string
 363          * - XML
 364          * - iconv
 365          * - fileinfo
 366          * - POSIX
 367          *
 368          * @return bool false if something required failed
 369          */
 370         public function checkFunctions()
 371         {
 372                 $returnVal = true;
 373
 374                 $help = '';
 375                 $status = true;
 376                 if (function_exists('apache_get_modules')) {
 377                         if (!in_array('mod_rewrite', apache_get_modules())) {
 378                                 $help = L10n::t('Error: Apache webserver mod-rewrite module is required but not installed.');
 379                                 $status = false;
 380                                 $returnVal = false;
 381                         }
 382                 }
 383                 $this->addCheck(L10n::t('Apache mod_rewrite module'), $status, true, $help);
 384
 385                 $help = '';
 386                 $status = true;
 387                 if (!function_exists('mysqli_connect') && !class_exists('pdo')) {
 388                         $status = false;
 389                         $help = L10n::t('Error: PDO or MySQLi PHP module required but not installed.');
 390                         $returnVal = false;
 391                 } else {
 392                         if (!function_exists('mysqli_connect') && class_exists('pdo') && !in_array('mysql', \PDO::getAvailableDrivers())) {
 393                                 $status = false;
 394                                 $help = L10n::t('Error: The MySQL driver for PDO is not installed.');
 395                                 $returnVal = false;
 396                         }
 397                 }
 398                 $this->addCheck(L10n::t('PDO or MySQLi PHP module'), $status, true, $help);
 399
 400                 // check for XML DOM Documents being able to be generated
 401                 $help = '';
 402                 $status = true;
 403                 try {
 404                         new DOMDocument();
 405                 } catch (Exception $e) {
 406                         $help = L10n::t('Error, XML PHP module required but not installed.');
 407                         $status = false;
 408                         $returnVal = false;
 409                 }
 410                 $this->addCheck(L10n::t('XML PHP module'), $status, true, $help);
 411
 412                 $status = $this->checkFunction('curl_init',
 413                         L10n::t('libCurl PHP module'),
 414                         L10n::t('Error: libCURL PHP module required but not installed.'),
 415                         true
 416                 );
 417                 $returnVal = $returnVal ? $status : false;
 418
 419                 $status = $this->checkFunction('imagecreatefromjpeg',
 420                         L10n::t('GD graphics PHP module'),
 421                         L10n::t('Error: GD graphics PHP module with JPEG support required but not installed.'),
 422                         true
 423                 );
 424                 $returnVal = $returnVal ? $status : false;
 425
 426                 $status = $this->checkFunction('openssl_public_encrypt',
 427                         L10n::t('OpenSSL PHP module'),
 428                         L10n::t('Error: openssl PHP module required but not installed.'),
 429                         true
 430                 );
 431                 $returnVal = $returnVal ? $status : false;
 432
 433                 $status = $this->checkFunction('mb_strlen',
 434                         L10n::t('mb_string PHP module'),
 435                         L10n::t('Error: mb_string PHP module required but not installed.'),
 436                         true
 437                 );
 438                 $returnVal = $returnVal ? $status : false;
 439
 440                 $status = $this->checkFunction('iconv_strlen',
 441                         L10n::t('iconv PHP module'),
 442                         L10n::t('Error: iconv PHP module required but not installed.'),
 443                         true
 444                 );
 445                 $returnVal = $returnVal ? $status : false;
 446
 447                 $status = $this->checkFunction('posix_kill',
 448                         L10n::t('POSIX PHP module'),
 449                         L10n::t('Error: POSIX PHP module required but not installed.'),
 450                         true
 451                 );
 452                 $returnVal = $returnVal ? $status : false;
 453
 454                 $status = $this->checkFunction('json_encode',
 455                         L10n::t('JSON PHP module'),
 456                         L10n::t('Error: JSON PHP module required but not installed.'),
 457                         true
 458                 );
 459                 $returnVal = $returnVal ? $status : false;
 460
 461                 $status = $this->checkFunction('finfo_open',
 462                         L10n::t('File Information PHP module'),
 463                         L10n::t('Error: File Information PHP module required but not installed.'),
 464                         true
 465                 );
 466                 $returnVal = $returnVal ? $status : false;
 467
 468                 return $returnVal;
 469         }
 470
 471         /**
 472          * "config/local.config.php" - Check
 473          *
 474          * Checks if it's possible to create the "config/local.config.php"
 475          *
 476          * @return bool false if something required failed
 477          */
 478         public function checkLocalIni()
 479         {
 480                 $status = true;
 481                 $help = "";
 482                 if ((file_exists('config/local.config.php') && !is_writable('config/local.config.php')) ||
 483                         (!file_exists('config/local.config.php') && !is_writable('.'))) {
 484
 485                         $status = false;
 486                         $help = L10n::t('The web installer needs to be able to create a file called "local.config.php" in the "config" folder of your web server and it is unable to do so.') . EOL;
 487                         $help .= L10n::t('This is most often a permission setting, as the web server may not be able to write files in your folder - even if you can.') . EOL;
 488                         $help .= L10n::t('At the end of this procedure, we will give you a text to save in a file named local.config.php in your Friendica "config" folder.') . EOL;
 489                         $help .= L10n::t('You can alternatively skip this procedure and perform a manual installation. Please see the file "INSTALL.txt" for instructions.') . EOL;
 490                 }
 491
 492                 $this->addCheck(L10n::t('config/local.config.php is writable'), $status, false, $help);
 493
 494                 // Local INI File is not required
 495                 return true;
 496         }
 497
 498         /**
 499          * Smarty3 Template Check
 500          *
 501          * Checks, if the directory of Smarty3 is writable
 502          *
 503          * @return bool false if something required failed
 504          */
 505         public function checkSmarty3()
 506         {
 507                 $status = true;
 508                 $help = "";
 509                 if (!is_writable('view/smarty3')) {
 510
 511                         $status = false;
 512                         $help = L10n::t('Friendica uses the Smarty3 template engine to render its web views. Smarty3 compiles templates to PHP to speed up rendering.') . EOL;
 513                         $help .= L10n::t('In order to store these compiled templates, the web server needs to have write access to the directory view/smarty3/ under the Friendica top level folder.') . EOL;
 514                         $help .= L10n::t("Please ensure that the user that your web server runs as \x28e.g. www-data\x29 has write access to this folder.") . EOL;
 515                         $help .= L10n::t("Note: as a security measure, you should give the web server write access to view/smarty3/ only--not the template files \x28.tpl\x29 that it contains.") . EOL;
 516                 }
 517
 518                 $this->addCheck(L10n::t('view/smarty3 is writable'), $status, true, $help);
 519
 520                 return $status;
 521         }
 522
 523         /**
 524          * ".htaccess" - Check
 525          *
 526          * Checks, if "url_rewrite" is enabled in the ".htaccess" file
 527          *
 528          * @param string $baseurl The baseurl of the app
 529          * @return bool false if something required failed
 530          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 531          */
 532         public function checkHtAccess($baseurl)
 533         {
 534                 $status = true;
 535                 $help = "";
 536                 $error_msg = "";
 537                 if (function_exists('curl_init')) {
 538                         $fetchResult = Network::fetchUrlFull($baseurl . "/install/testrewrite");
 539
 540                         $url = Strings::normaliseLink($baseurl . "/install/testrewrite");
 541                         if ($fetchResult->getReturnCode() != 204) {
 542                                 $fetchResult = Network::fetchUrlFull($url);
 543                         }
 544
 545                         if ($fetchResult->getReturnCode() != 204) {
 546                                 $status = false;
 547                                 $help = L10n::t('Url rewrite in .htaccess is not working. Make sure you copied .htaccess-dist to .htaccess.');
 548                                 $error_msg = [];
 549                                 $error_msg['head'] = L10n::t('Error message from Curl when fetching');
 550                                 $error_msg['url'] = $fetchResult->getRedirectUrl();
 551                                 $error_msg['msg'] = $fetchResult->getError();
 552                         }
 553
 554                         $this->addCheck(L10n::t('Url rewrite is working'), $status, true, $help, $error_msg);
 555                 } else {
 556                         // cannot check modrewrite if libcurl is not installed
 557                         /// @TODO Maybe issue warning here?
 558                 }
 559
 560                 return $status;
 561         }
 562
 563         /**
 564          * Imagick Check
 565          *
 566          * Checks, if the imagick module is available
 567          *
 568          * @return bool false if something required failed
 569          */
 570         public function checkImagick()
 571         {
 572                 $imagick = false;
 573                 $gif = false;
 574
 575                 if (class_exists('Imagick')) {
 576                         $imagick = true;
 577                         $supported = Image::supportedTypes();
 578                         if (array_key_exists('image/gif', $supported)) {
 579                                 $gif = true;
 580                         }
 581                 }
 582                 if (!$imagick) {
 583                         $this->addCheck(L10n::t('ImageMagick PHP extension is not installed'), $imagick, false, "");
 584                 } else {
 585                         $this->addCheck(L10n::t('ImageMagick PHP extension is installed'), $imagick, false, "");
 586                         if ($imagick) {
 587                                 $this->addCheck(L10n::t('ImageMagick supports GIF'), $gif, false, "");
 588                         }
 589                 }
 590
 591                 // Imagick is not required
 592                 return true;
 593         }
 594
 595         /**
 596          * Checking the Database connection and if it is available for the current installation
 597          *
 598          * @param IConfigCache $configCache The configuration cache
 599          * @param Profiler    $profiler    The profiler of this app
 600          *
 601          * @return bool true if the check was successful, otherwise false
 602          * @throws Exception
 603          */
 604         public function checkDB(IConfigCache $configCache, Profiler $profiler)
 605         {
 606                 $dbhost = $configCache->get('database', 'hostname');
 607                 $dbuser = $configCache->get('database', 'username');
 608                 $dbpass = $configCache->get('database', 'password');
 609                 $dbdata = $configCache->get('database', 'database');
 610
 611                 if (!DBA::connect($configCache, $profiler, new VoidLogger(), $dbhost, $dbuser, $dbpass, $dbdata)) {
 612                         $this->addCheck(L10n::t('Could not connect to database.'), false, true, '');
 613
 614                         return false;
 615                 }
 616
 617                 if (DBA::connected()) {
 618                         if (DBStructure::existsTable('user')) {
 619                                 $this->addCheck(L10n::t('Database already in use.'), false, true, '');
 620
 621                                 return false;
 622                         }
 623                 }
 624
 625                 return true;
 626         }
 627
 628         /**
 629          * Setup the default cache for a new installation
 630          *
 631          * @param IConfigCache $configCache The configuration cache
 632          * @param string       $basePath    The determined basepath
 633          *
 634          * @throws \Friendica\Network\HTTPException\InternalServerErrorException
 635          */
 636         public function setUpCache(IConfigCache $configCache, $basePath)
 637         {
 638                 $configCache->set('config', 'php_path'  , $this->getPHPPath());
 639                 $configCache->set('system', 'basepath'  , $basePath);
 640         }
 641 }