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<?php
/**
* Piwik - free/libre analytics platform
*
* @link http://piwik.org
* @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
*
*/
/**
* This file is executed before anything else.
* It checks the minimum PHP version required to run Matomo.
* This file must be compatible PHP4.
*/
$piwik_errorMessage = '';
// Minimum requirement: stream_resolve_include_path, working json_encode in 5.3.3, namespaces in 5.3
// NOTE: when changing this variable, we also need to update
// 1) api.matomo.org
// 2) tests/travis/generator/Generator.php
// 3) composer.json (in two places)
// 4) tests/PHPUnit/Integration/ReleaseCheckListTest.php
$piwik_minimumPHPVersion = '5.5.9';
$piwik_currentPHPVersion = PHP_VERSION;
$minimumPhpInvalid = version_compare($piwik_minimumPHPVersion, $piwik_currentPHPVersion) > 0;
if ($minimumPhpInvalid) {
$piwik_errorMessage .= "<p><strong>To run Matomo you need at least PHP version $piwik_minimumPHPVersion</strong></p>
<p>Unfortunately it seems your webserver is using PHP version $piwik_currentPHPVersion. </p>
<p>Please try to update your PHP version, Matomo is really worth it! Nowadays most web hosts
support PHP $piwik_minimumPHPVersion.</p>
<p>Also see the FAQ: <a href='https://matomo.org/faq/how-to-install/#faq_77'>My Web host supports PHP4 by default. How can I enable PHP5?</a></p>";
} else {
if (!extension_loaded('session')) {
$piwik_errorMessage .= "<p><strong>Matomo and Zend_Session require the session extension</strong></p>
<p>It appears your PHP was compiled with <pre>--disable-session</pre>.
To enjoy Matomo, you need PHP compiled without that configure option.</p>";
}
if (!function_exists('ini_set')) {
$piwik_errorMessage .= "<p><strong>Matomo and Zend_Session require the <code>ini_set()</code> function</strong></p>
<p>It appears your PHP has disabled this function.
To enjoy Matomo, you need remove <pre>ini_set</pre> from your <pre>disable_functions</pre> directive in php.ini, and restart your webserver.</p>";
}
if (ini_get('mbstring.func_overload')) {
$piwik_errorMessage .= "<p><strong>Matomo does not work when PHP is configured with <pre>mbstring.func_overload = " . ini_get('mbstring.func_overload') . "</pre></strong></p>
<p>It appears your mbstring extension in PHP is configured to override string functions.
To enjoy Matomo, you need to modify php.ini <pre>mbstring.func_overload = 0</pre>, and restart your webserver.</p>";
}
if (!function_exists('json_encode')) {
$piwik_errorMessage .= "<p><strong>Matomo requires the php5-json extension which provides the functions <code>json_encode()</code> and <code>json_decode()</code></strong></p>
<p>It appears your PHP has not yet installed the php5-json extension.
To use Matomo, please ask your web host to install php5-json or install it yourself, for example on debian system: <code>sudo apt-get install php5-json</code>. <br/>Then restart your webserver and refresh this page.</p>";
}
if (!file_exists(PIWIK_VENDOR_PATH . '/autoload.php')) {
$composerInstall = "In the matomo directory, run in the command line the following (eg. via ssh): \n\n"
. "<pre> curl -sS https://getcomposer.org/installer | php \n\n php composer.phar install\n\n</pre> ";
if (DIRECTORY_SEPARATOR === '\\' /* ::isWindows() */) {
$composerInstall = "Download and run <a href=\"https://getcomposer.org/Composer-Setup.exe\"><b>Composer-Setup.exe</b></a>, it will install the latest Composer version and set up your PATH so that you can just call composer from any directory in your command line. "
. " <br>Then run this command in a terminal in the matomo directory: <br> $ php composer.phar install ";
}
$piwik_errorMessage .= "<p>It appears the <a href='https://getcomposer.org/' rel='noreferrer noopener' target='_blank'>composer</a> tool is not yet installed. You can install Composer in a few easy steps:\n\n".
"<br/>" . $composerInstall.
" This will initialize composer for Matomo and download libraries we use in vendor/* directory.".
"\n\n<br/><br/>Then reload this page to access your analytics reports." .
"\n\n<br/><br/>For more information check out this FAQ: <a href='https://matomo.org/faq/how-to-install/faq_18271/' rel='noreferrer noopener' target='_blank'>How do I use Matomo from the Git repository?</a>." .
"\n\n<br/><br/>Note: if for some reasons you cannot install composer, instead install the latest Matomo release from ".
"<a href='https://builds.matomo.org/piwik.zip' rel='noreferrer noopener'>builds.matomo.org</a>.</p>";
}
}
define('PAGE_TITLE_WHEN_ERROR', 'Matomo › Error');
if (!function_exists('Piwik_GetErrorMessagePage')) {
/**
* Returns true if Piwik should print the backtrace with error messages.
*
* To make sure the backtrace is printed, define PIWIK_PRINT_ERROR_BACKTRACE.
*
* @return bool
*/
function Piwik_ShouldPrintBackTraceWithMessage()
{
$bool = (defined('PIWIK_PRINT_ERROR_BACKTRACE') && PIWIK_PRINT_ERROR_BACKTRACE)
|| !empty($GLOBALS['PIWIK_TRACKER_DEBUG']);
return $bool;
}
/**
* Displays info/warning/error message in a friendly UI and exits.
*
* Note: this method should not be called by anyone other than FrontController.
*
* @param string $message Main message, must be html encoded before calling
* @param bool|string $optionalTrace Backtrace; will be displayed in lighter color
* @param bool $optionalLinks If true, will show links to the Piwik website for help
* @param bool $optionalLinkBack If true, displays a link to go back
* @param bool|string $logoUrl The URL to the logo to use.
* @param bool|string $faviconUrl The URL to the favicon to use.
* @return string
*/
function Piwik_GetErrorMessagePage($message, $optionalTrace = false, $optionalLinks = false, $optionalLinkBack = false,
$logoUrl = false, $faviconUrl = false, $isCli = null)
{
error_log(sprintf("Error in Matomo: %s", str_replace("\n", " ", strip_tags($message))));
if (!headers_sent()) {
header('Content-Type: text/html; charset=utf-8');
$isInternalServerError = preg_match('/(sql|database|mysql)/i', $message);
if ($isInternalServerError) {
header('HTTP/1.1 500 Internal Server Error');
}
}
// We return only an HTML fragment for AJAX requests
if (isset($_SERVER['HTTP_X_REQUESTED_WITH'])
&& (strtolower($_SERVER['HTTP_X_REQUESTED_WITH']) === 'xmlhttprequest')
) {
return "<div class='alert alert-danger'><strong>Error:</strong> $message</div>";
}
if (empty($logoUrl)) {
$logoUrl = "plugins/Morpheus/images/logo.svg";
}
if (empty($faviconUrl)) {
$faviconUrl = "plugins/CoreHome/images/favicon.png";
}
if ($optionalTrace) {
$optionalTrace = '<h2>Stack trace</h2><pre>' . htmlentities($optionalTrace, ENT_COMPAT | ENT_HTML401, 'UTF-8') . '</pre>';
}
if ($isCli === null) {
$isCli = PHP_SAPI == 'cli';
}
if ($optionalLinks) {
$optionalLinks = '<ul>
<li><a rel="noreferrer noopener" target="_blank" href="https://matomo.org">Matomo.org homepage</a></li>
<li><a rel="noreferrer noopener" target="_blank" href="https://matomo.org/faq/">Matomo Frequently Asked Questions</a></li>
<li><a rel="noreferrer noopener" target="_blank" href="https://matomo.org/docs/">Matomo Documentation</a></li>
<li><a rel="noreferrer noopener" target="_blank" href="https://forum.matomo.org/">Matomo Forums</a></li>
<li><a rel="noreferrer noopener" target="_blank" href="https://matomo.org/support/?pk_campaign=App_AnErrorOccured&pk_source=Piwik_App&pk_medium=ProfessionalServicesLink">Professional help for Matomo</a></li>
</ul>';
}
if ($optionalLinkBack) {
$optionalLinkBack = '<a href="javascript:window.history.back();">Go Back</a>';
}
$headerPage = file_get_contents(PIWIK_INCLUDE_PATH . '/plugins/Morpheus/templates/simpleLayoutHeader.tpl');
$headerPage = str_replace('%logoUrl%', $logoUrl, $headerPage);
$headerPage = str_replace('%faviconUrl%', $faviconUrl, $headerPage);
$footerPage = file_get_contents(PIWIK_INCLUDE_PATH . '/plugins/Morpheus/templates/simpleLayoutFooter.tpl');
$headerPage = str_replace('{$HTML_TITLE}', PAGE_TITLE_WHEN_ERROR, $headerPage);
$content = '<h2>' . $message . '</h2>
<p>'
. $optionalLinkBack
. ' | <a href="index.php">Go to Matomo</a>'
. '</p>'
. ' ' . (Piwik_ShouldPrintBackTraceWithMessage() ? $optionalTrace : '')
. ' ' . $optionalLinks;
$message = str_replace(array("<br />", "<br>", "<br/>", "</p>"), "\n", $message);
$message = str_replace("\t", "", $message);
$message = strip_tags($message);
if (!$isCli) {
$message = $headerPage . $content . $footerPage;
}
$message .= "\n";
return $message;
}
}
if (!empty($piwik_errorMessage)) {
echo Piwik_GetErrorMessagePage($piwik_errorMessage, false, true);
exit(1);
}
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