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[yaffs-website] / vendor / drush / drush / src / Preflight / PreflightVerify.php

diff --git a/vendor/drush/drush/src/Preflight/PreflightVerify.php b/vendor/drush/drush/src/Preflight/PreflightVerify.php
new file mode 100644 (file)
index 0000000..aec71ee
--- /dev/null
+++ b/vendor/drush/drush/src/Preflight/PreflightVerify.php
@@ -0,0 +1,117 @@
+<?php
+namespace Drush\Preflight;
+
+use Drush\Drush;
+use Drush\Config\Environment;
+use Drush\Utils\StringUtils;
+
+/**
+ * Helper methods to verify preflight state.
+ */
+class PreflightVerify
+{
+    /**
+     * Throw an exception if the environment is not right for running Drush.
+     *
+     * @param Environment $environment
+     */
+    public function verify(Environment $environment)
+    {
+        // Fail fast if the PHP version is not at least 5.6.0.
+        // We'll come back and check this again later, in case someone
+        // set a higher value in a configuration file.
+        $this->confirmPhpVersion('5.6.0');
+
+        // Fail if this is not a CLI php
+        $this->confirmUsingCLI($environment);
+
+        // Fail if any mandatory functions have been disabled, or any
+        // illegal options have been set in php.ini.
+        $this->checkPhpIni();
+    }
+
+    /**
+     * Fail fast if the php version does not meet the minimum requirements.
+     *
+     * @param string $minimumPhpVersion
+     *   The minimum allowable php version
+     */
+    public function confirmPhpVersion($minimumPhpVersion)
+    {
+        if (version_compare(phpversion(), $minimumPhpVersion) < 0 && !getenv('DRUSH_NO_MIN_PHP')) {
+            throw new \Exception(StringUtils::interpolate('Your command line PHP installation is too old. Drush requires at least PHP {version}. To suppress this check, set the environment variable DRUSH_NO_MIN_PHP=1', ['version' => $minimumPhpVersion]));
+        }
+    }
+
+    /**
+     * Fail if not being run from the command line.
+     *
+     * @param Environment $environment
+     */
+    protected function confirmUsingCLI(Environment $environment)
+    {
+        if (!$environment->verifyCLI()) {
+            throw new \Exception(StringUtils::interpolate('Drush is designed to run via the command line.'));
+        }
+    }
+
+    /**
+     * Evaluate the environment before command bootstrapping
+     * begins.  If the php environment is too restrictive, then
+     * notify the user that a setting change is needed and abort.
+     */
+    protected function checkPhpIni()
+    {
+        $ini_checks = ['safe_mode' => '', 'open_basedir' => '', 'disable_functions' => ['exec', 'system'], 'disable_classes' => ''];
+
+        // Test to insure that certain php ini restrictions have not been enabled
+        $prohibited_list = [];
+        foreach ($ini_checks as $prohibited_mode => $disallowed_value) {
+            $ini_value = ini_get($prohibited_mode);
+            if ($this->invalidIniValue($ini_value, $disallowed_value)) {
+                $prohibited_list[] = $prohibited_mode;
+            }
+        }
+        if (!empty($prohibited_list)) {
+            throw new \Exception(StringUtils::interpolate('The following restricted PHP modes have non-empty values: {prohibited_list}. This configuration is incompatible with drush.  {php_ini_msg}', ['prohibited_list' => implode(' and ', $prohibited_list), 'php_ini_msg' => $this->loadedPhpIniMessage()]));
+        }
+    }
+
+    /**
+     * Determine whether an ini value is valid based on the criteria.
+     *
+     * @param string $ini_value
+     *   The value of the ini setting being tested.
+     * @param string|string[] $disallowed_value
+     *   The value that the ini seting cannot be, or a list of disallowed
+     *   values that cannot appear in the setting.
+     * @return bool
+     */
+    protected function invalidIniValue($ini_value, $disallowed_value)
+    {
+        if (empty($disallowed_value)) {
+            return !empty($ini_value) && (strcasecmp($ini_value, 'off') != 0);
+        } else {
+            foreach ($disallowed_value as $test_value) {
+                if (preg_match('/(^|,)' . $test_value . '(,|$)/', $ini_value)) {
+                    return true;
+                }
+            }
+        }
+        return false;
+    }
+
+    /**
+     * Returns a localizable message about php.ini that
+     * varies depending on whether the php_ini_loaded_file()
+     * is available or not.
+     */
+    protected function loadedPhpIniMessage()
+    {
+        if (function_exists('php_ini_loaded_file')) {
+            return StringUtils::interpolate('Please check your configuration settings in !phpini or in your drush.ini file; see examples/example.drush.ini for details.', ['!phpini' => php_ini_loaded_file()]);
+        } else {
+            return StringUtils::interpolate('Please check your configuration settings in your php.ini file or in your drush.ini file; see examples/example.drush.ini for details.');
+        }
+    }
+}