Friendica Communications Platform (please note that this is a clone of the repository at github, issues are handled there) https://friendi.ca
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<?php
/**
* @file src/Core/Install.php
*/
namespace Friendica\Core;
use DOMDocument;
use Exception;
use Friendica\Object\Image;
use Friendica\Util\Network;
/**
* Contains methods for installation purpose of Friendica
*/
class Install
{
/**
* @var array the check outcomes
*/
private $checks;
/**
* Returns all checks made
*
* @return array the checks
*/
public function getChecks()
{
return $this->checks;
}
/**
* Resets all checks
*/
public function resetChecks()
{
$this->checks = [];
}
/**
* Install constructor.
*
*/
public function __construct()
{
$this->checks = [];
}
/**
* Checks the current installation environment. There are optional and mandatory checks.
*
* @param string $baseurl The baseurl of Friendica
* @param string $phpath Optional path to the PHP binary
*
* @return bool if the check succeed
*/
public function checkAll($baseurl, $phpath = null)
{
$returnVal = true;
if (isset($phpath)) {
if (!$this->checkPHP($phpath)) {
$returnVal = false;
}
}
if (!$this->checkFunctions()) {
$returnVal = false;
}
if (!$this->checkImagick()) {
$returnVal = false;
}
if (!$this->checkLocalIni()) {
$returnVal = false;
}
if (!$this->checkSmarty3()) {
$returnVal = false;
}
if (!$this->checkKeys()) {
$returnVal = false;
}
if (!$this->checkHtAccess($baseurl)) {
$returnVal = false;
}
return $returnVal;
}
/**
* Executes the installation of Friendica in the given environment.
* - Creates `config/local.ini.php`
* - Installs Database Structure
*
* @param string $phppath Path to the PHP-Binary (optional, if not set e.g. 'php' or '/usr/bin/php')
* @param string $urlpath Path based on the URL of Friendica (e.g. '/friendica')
* @param string $dbhost Hostname/IP of the Friendica Database
* @param string $dbuser Username of the Database connection credentials
* @param string $dbpass Password of the Database connection credentials
* @param string $dbdata Name of the Database
* @param string $timezone Timezone of the Friendica Installaton (e.g. 'Europe/Berlin')
* @param string $language 2-letter ISO 639-1 code (eg. 'en')
* @param string $adminmail Mail-Adress of the administrator
* @param string $basepath The basepath of Friendica
*
* @return bool|string true if the config was created, the text if something went wrong
*/
public function createConfig($phppath, $urlpath, $dbhost, $dbuser, $dbpass, $dbdata, $timezone, $language, $adminmail, $basepath)
{
$tpl = get_markup_template('local.ini.tpl');
$txt = replace_macros($tpl,[
'$phpath' => $phppath,
'$dbhost' => $dbhost,
'$dbuser' => $dbuser,
'$dbpass' => $dbpass,
'$dbdata' => $dbdata,
'$timezone' => $timezone,
'$language' => $language,
'$urlpath' => $urlpath,
'$adminmail' => $adminmail,
]);
$result = file_put_contents($basepath . DIRECTORY_SEPARATOR . 'config' . DIRECTORY_SEPARATOR . 'local.ini.php', $txt);
if (!$result) {
return $txt;
} else {
return true;
}
}
/**
* Adds new checks to the array $checks
*
* @param string $title The title of the current check
* @param bool $status 1 = check passed, 0 = check not passed
* @param bool $required 1 = check is mandatory, 0 = check is optional
* @param string $help A help-string for the current check
* @param string $error_msg Optional. A error message, if the current check failed
*/
private function addCheck($title, $status, $required, $help, $error_msg = "")
{
array_push($this->checks, [
'title' => $title,
'status' => $status,
'required' => $required,
'help' => $help,
'error_msg' => $error_msg,
]);
}
/**
* PHP Check
*
* Checks the PHP environment.
*
* - Checks if a PHP binary is available
* - Checks if it is the CLI version
* - Checks if "register_argc_argv" is enabled
*
* @param string $phppath Optional. The Path to the PHP-Binary
* @param bool $required Optional. If set to true, the PHP-Binary has to exist (Default false)
*
* @return bool false if something required failed
*/
public function checkPHP($phppath = null, $required = false)
{
$passed = $passed2 = $passed3 = false;
if (isset($phppath)) {
$passed = file_exists($phppath);
} else {
$phppath = trim(shell_exec('which php'));
$passed = strlen($phppath);
}
$help = "";
if (!$passed) {
$help .= L10n::t('Could not find a command line version of PHP in the web server PATH.') . EOL;
$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;
$help .= EOL . EOL;
$tpl = get_markup_template('field_input.tpl');
$help .= replace_macros($tpl, [
'$field' => ['phpath', L10n::t('PHP executable path'), $phppath, L10n::t('Enter full path to php executable. You can leave this blank to continue the installation.')],
]);
$phppath = "";
}
$this->addCheck(L10n::t('Command line PHP') . ($passed ? " (<tt>$phppath</tt>)" : ""), $passed, false, $help);
if ($passed) {
$cmd = "$phppath -v";
$result = trim(shell_exec($cmd));
$passed2 = (strpos($result, "(cli)") !== false);
list($result) = explode("\n", $result);
$help = "";
if (!$passed2) {
$help .= L10n::t("PHP executable is not the php cli binary \x28could be cgi-fgci version\x29") . EOL;
$help .= L10n::t('Found PHP version: ') . "<tt>$result</tt>";
}
$this->addCheck(L10n::t('PHP cli binary'), $passed2, true, $help);
} else {
// return if it was required
return $required;
}
if ($passed2) {
$str = autoname(8);
$cmd = "$phppath testargs.php $str";
$result = trim(shell_exec($cmd));
$passed3 = $result == $str;
$help = "";
if (!$passed3) {
$help .= L10n::t('The command line version of PHP on your system does not have "register_argc_argv" enabled.') . EOL;
$help .= L10n::t('This is required for message delivery to work.');
} else {
$this->phppath = $phppath;
}
$this->addCheck(L10n::t('PHP register_argc_argv'), $passed3, true, $help);
}
// passed2 & passed3 are required if first check passed
return $passed2 && $passed3;
}
/**
* OpenSSL Check
*
* Checks the OpenSSL Environment
*
* - Checks, if the command "openssl_pkey_new" is available
*
* @return bool false if something required failed
*/
public function checkKeys()
{
$help = '';
$res = false;
$status = true;
if (function_exists('openssl_pkey_new')) {
$res = openssl_pkey_new([
'digest_alg' => 'sha1',
'private_key_bits' => 4096,
'encrypt_key' => false
]);
}
// Get private key
if (!$res) {
$help .= L10n::t('Error: the "openssl_pkey_new" function on this system is not able to generate encryption keys') . EOL;
$help .= L10n::t('If running under Windows, please see "http://www.php.net/manual/en/openssl.installation.php".');
$status = false;
}
$this->addCheck(L10n::t('Generate encryption keys'), $res, true, $help);
return $status;
}
/**
* PHP basic function check
*
* @param string $name The name of the function
* @param string $title The (localized) title of the function
* @param string $help The (localized) help of the function
* @param boolean $required If true, this check is required
*
* @return bool false, if the check failed
*/
private function checkFunction($name, $title, $help, $required)
{
$currHelp = '';
$status = true;
if (!function_exists($name)) {
$currHelp = $help;
$status = false;
}
$this->addCheck($title, $status, $required, $currHelp);
return $status || (!$status && !$required);
}
/**
* PHP functions Check
*
* Checks the following PHP functions
* - libCurl
* - GD Graphics
* - OpenSSL
* - PDO or MySQLi
* - mb_string
* - XML
* - iconv
* - POSIX
*
* @return bool false if something required failed
*/
public function checkFunctions()
{
$returnVal = true;
$help = '';
$status = true;
if (function_exists('apache_get_modules')) {
if (!in_array('mod_rewrite', apache_get_modules())) {
$help = L10n::t('Error: Apache webserver mod-rewrite module is required but not installed.');
$status = false;
$returnVal = false;
}
}
$this->addCheck(L10n::t('Apache mod_rewrite module'), $status, true, $help);
$help = '';
$status = true;
if (!function_exists('mysqli_connect') && !class_exists('pdo')) {
$status = false;
$help = L10n::t('Error: PDO or MySQLi PHP module required but not installed.');
$returnVal = false;
} else {
if (!function_exists('mysqli_connect') && class_exists('pdo') && !in_array('mysql', \PDO::getAvailableDrivers())) {
$status = false;
$help = L10n::t('Error: The MySQL driver for PDO is not installed.');
$returnVal = false;
}
}
$this->addCheck(L10n::t('PDO or MySQLi PHP module'), $status, true, $help);
// check for XML DOM Documents being able to be generated
$help = '';
$status = true;
try {
$xml = new DOMDocument();
} catch (Exception $e) {
$help = L10n::t('Error, XML PHP module required but not installed.');
$status = false;
$returnVal = false;
}
$this->addCheck(L10n::t('XML PHP module'), $status, true, $help);
$status = $this->checkFunction('curl_init',
L10n::t('libCurl PHP module'),
L10n::t('Error: libCURL PHP module required but not installed.'),
true
);
$returnVal = $returnVal ? $status : false;
$status = $this->checkFunction('imagecreatefromjpeg',
L10n::t('GD graphics PHP module'),
L10n::t('Error: GD graphics PHP module with JPEG support required but not installed.'),
true
);
$returnVal = $returnVal ? $status : false;
$status = $this->checkFunction('openssl_public_encrypt',
L10n::t('OpenSSL PHP module'),
L10n::t('Error: openssl PHP module required but not installed.'),
true
);
$returnVal = $returnVal ? $status : false;
$status = $this->checkFunction('mb_strlen',
L10n::t('mb_string PHP module'),
L10n::t('Error: mb_string PHP module required but not installed.'),
true
);
$returnVal = $returnVal ? $status : false;
$status = $this->checkFunction('iconv_strlen',
L10n::t('iconv PHP module'),
L10n::t('Error: iconv PHP module required but not installed.'),
true
);
$returnVal = $returnVal ? $status : false;
$status = $this->checkFunction('posix_kill',
L10n::t('POSIX PHP module'),
L10n::t('Error: POSIX PHP module required but not installed.'),
true
);
$returnVal = $returnVal ? $status : false;
return $returnVal;
}
/**
* "config/local.ini.php" - Check
*
* Checks if it's possible to create the "config/local.ini.php"
*
* @return bool false if something required failed
*/
public function checkLocalIni()
{
$status = true;
$help = "";
if ((file_exists('config/local.ini.php') && !is_writable('config/local.ini.php')) ||
(!file_exists('config/local.ini.php') && !is_writable('.'))) {
$status = false;
$help = L10n::t('The web installer needs to be able to create a file called "local.ini.php" in the "config" folder of your web server and it is unable to do so.') . EOL;
$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;
$help .= L10n::t('At the end of this procedure, we will give you a text to save in a file named local.ini.php in your Friendica "config" folder.') . EOL;
$help .= L10n::t('You can alternatively skip this procedure and perform a manual installation. Please see the file "INSTALL.txt" for instructions.') . EOL;
}
$this->addCheck(L10n::t('config/local.ini.php is writable'), $status, false, $help);
// Local INI File is not required
return true;
}
/**
* Smarty3 Template Check
*
* Checks, if the directory of Smarty3 is writable
*
* @return bool false if something required failed
*/
public function checkSmarty3()
{
$status = true;
$help = "";
if (!is_writable('view/smarty3')) {
$status = false;
$help = L10n::t('Friendica uses the Smarty3 template engine to render its web views. Smarty3 compiles templates to PHP to speed up rendering.') . EOL;
$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;
$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;
$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;
}
$this->addCheck(L10n::t('view/smarty3 is writable'), $status, true, $help);
return $status;
}
/**
* ".htaccess" - Check
*
* Checks, if "url_rewrite" is enabled in the ".htaccess" file
*
* @param string $baseurl The baseurl of the app
* @return bool false if something required failed
*/
public function checkHtAccess($baseurl)
{
$status = true;
$help = "";
$error_msg = "";
if (function_exists('curl_init')) {
$fetchResult = Network::fetchUrlFull($baseurl . "/install/testrewrite");
$url = normalise_link($baseurl . "/install/testrewrite");
if ($fetchResult->getReturnCode() != 204) {
$fetchResult = Network::fetchUrlFull($url);
}
if ($fetchResult->getReturnCode() != 204) {
$status = false;
$help = L10n::t('Url rewrite in .htaccess is not working. Check your server configuration.');
$error_msg = [];
$error_msg['head'] = L10n::t('Error message from Curl when fetching');
$error_msg['url'] = $fetchResult->getRedirectUrl();
$error_msg['msg'] = $fetchResult->getError();
}
$this->addCheck(L10n::t('Url rewrite is working'), $status, true, $help, $error_msg);
} else {
// cannot check modrewrite if libcurl is not installed
/// @TODO Maybe issue warning here?
}
return $status;
}
/**
* Imagick Check
*
* Checks, if the imagick module is available
*
* @return bool false if something required failed
*/
public function checkImagick()
{
$imagick = false;
$gif = false;
if (class_exists('Imagick')) {
$imagick = true;
$supported = Image::supportedTypes();
if (array_key_exists('image/gif', $supported)) {
$gif = true;
}
}
if (!$imagick) {
$this->addCheck(L10n::t('ImageMagick PHP extension is not installed'), $imagick, false, "");
} else {
$this->addCheck(L10n::t('ImageMagick PHP extension is installed'), $imagick, false, "");
if ($imagick) {
$this->addCheck(L10n::t('ImageMagick supports GIF'), $gif, false, "");
}
}
// Imagick is not required
return true;
}
}