1 files changed, 192 insertions, 0 deletions
diff --git a/application/forms/ConfigForm.php b/application/forms/ConfigForm.php
new file mode 100644
index 0000000..8b0c5f9
--- /dev/null
+++ b/application/forms/ConfigForm.php
@@ -0,0 +1,192 @@
+<?php
+/* Icinga Web 2 | (c) 2014 Icinga Development Team | GPLv2+ */
+
+namespace Icinga\Forms;
+
+use Exception;
+use Zend_Form_Decorator_Abstract;
+use Icinga\Application\Config;
+use Icinga\Application\Hook\ConfigFormEventsHook;
+use Icinga\Exception\ConfigurationError;
+use Icinga\Web\Form;
+use Icinga\Web\Notification;
+
+/**
+ * Form base-class providing standard functionality for configuration forms
+ */
+class ConfigForm extends Form
+{
+    /**
+     * The configuration to work with
+     *
+     * @var Config
+     */
+    protected $config;
+
+    /**
+     * {@inheritdoc}
+     *
+     * Values from subforms are directly added to the returned values array instead of being grouped by the subforms'
+     * names.
+     */
+    public function getValues($suppressArrayNotation = false)
+    {
+        $values = parent::getValues($suppressArrayNotation);
+        foreach (array_keys($this->_subForms) as $name) {
+            // Zend returns values from subforms grouped by their names, but we want them flat
+            $values = array_merge($values, $values[$name]);
+            unset($values[$name]);
+        }
+        return $values;
+    }
+
+    /**
+     * Set the configuration to use when populating the form or when saving the user's input
+     *
+     * @param   Config      $config     The configuration to use
+     *
+     * @return  $this
+     */
+    public function setIniConfig(Config $config)
+    {
+        $this->config = $config;
+        return $this;
+    }
+
+    public function isValid($formData)
+    {
+        $valid = parent::isValid($formData);
+
+        if ($valid && ConfigFormEventsHook::runIsValid($this) === false) {
+            foreach (ConfigFormEventsHook::getLastErrors() as $msg) {
+                $this->error($msg);
+            }
+
+            $valid = false;
+        }
+
+        return $valid;
+    }
+
+    public function onSuccess()
+    {
+        $sections = array();
+        foreach (static::transformEmptyValuesToNull($this->getValues()) as $sectionAndPropertyName => $value) {
+            list($section, $property) = explode('_', $sectionAndPropertyName, 2);
+            $sections[$section][$property] = $value;
+        }
+
+        foreach ($sections as $section => $config) {
+            if ($this->isEmptyConfig($config)) {
+                $this->config->removeSection($section);
+            } else {
+                $this->config->setSection($section, $config);
+            }
+        }
+
+        if ($this->save()) {
+            Notification::success($this->translate('New configuration has successfully been stored'));
+        } else {
+            return false;
+        }
+
+        if (ConfigFormEventsHook::runOnSuccess($this) === false) {
+            Notification::error($this->translate(
+                'Configuration successfully stored. Though, one or more module hooks failed to run.'
+                . ' See logs for details'
+            ));
+        }
+    }
+
+    public function onRequest()
+    {
+        $values = array();
+        foreach ($this->config as $section => $properties) {
+            foreach ($properties as $name => $value) {
+                $values[$section . '_' . $name] = $value;
+            }
+        }
+
+        $this->populate($values);
+    }
+
+    /**
+     * Persist the current configuration to disk
+     *
+     * If an error occurs the user is shown a view describing the issue and displaying the raw INI configuration.
+     *
+     * @return  bool                    Whether the configuration could be persisted
+     */
+    public function save()
+    {
+        try {
+            $this->writeConfig($this->config);
+        } catch (ConfigurationError $e) {
+            $this->addError($e->getMessage());
+
+            return false;
+        } catch (Exception $e) {
+            $this->addDecorator('ViewScript', array(
+                'viewModule'    => 'default',
+                'viewScript'    => 'showConfiguration.phtml',
+                'errorMessage'  => $e->getMessage(),
+                'configString'  => $this->config,
+                'filePath'      => $this->config->getConfigFile(),
+                'placement'     => Zend_Form_Decorator_Abstract::PREPEND
+            ));
+            return false;
+        }
+
+        return true;
+    }
+
+    /**
+     * Write the configuration to disk
+     *
+     * @param   Config  $config
+     */
+    protected function writeConfig(Config $config)
+    {
+        $config->saveIni();
+    }
+
+    /**
+     * Get whether the given config is empty or has only empty values
+     *
+     * @param array|Config $config
+     *
+     * @return bool
+     */
+    protected function isEmptyConfig($config)
+    {
+        if ($config instanceof Config) {
+            $config = $config->toArray();
+        }
+
+        foreach ($config as $value) {
+            if ($value !== null) {
+                return false;
+            }
+        }
+
+        return true;
+    }
+
+    /**
+     * Transform all empty values of the given array to null
+     *
+     * @param   array   $values
+     *
+     * @return  array
+     */
+    public static function transformEmptyValuesToNull(array $values)
+    {
+        array_walk($values, function (&$v) {
+            if ($v === '' || $v === false || $v === array()) {
+                $v = null;
+            }
+        });
+
+        return $values;
+    }
+}