Add monitoring module wizard

refs #7163

modules/monitoring/application/forms/Setup/BackendPage.php

@@ -0,0 +1,63 @@
+<?php
+// {{{ICINGA_LICENSE_HEADER}}}
+// {{{ICINGA_LICENSE_HEADER}}}
+
+namespace Icinga\Module\Monitoring\Form\Setup;
+
+use Icinga\Web\Form;
+use Icinga\Web\Form\Element\Note;
+use Icinga\Application\Platform;
+
+class BackendPage extends Form
+{
+    public function init()
+    {
+        $this->setName('setup_monitoring_backend');
+    }
+
+    public function createElements(array $formData)
+    {
+        $this->addElement(
+            new Note(
+                'description',
+                array(
+                    'value' => mt(
+                        'monitoring',
+                        'Please configure below how Icinga Web 2 should retrieve monitoring information.'
+                    )
+                )
+            )
+        );
+
+        $this->addElement(
+            'text',
+            'name',
+            array(
+                'required'      => true,
+                'label'         => mt('monitoring', 'Backend Name'),
+                'description'   => mt('monitoring', 'The identifier of this backend')
+            )
+        );
+
+        $resourceTypes = array('livestatus' => 'Livestatus');
+        if (
+            Platform::extensionLoaded('pdo') && (
+            Platform::zendClassExists('Zend_Db_Adapter_Pdo_Mysql')
+            || Platform::zendClassExists('Zend_Db_Adapter_Pdo_Pgsql')
+            )
+        ) {
+            $resourceTypes['ido'] = 'IDO';
+        }
+
+        $this->addElement(
+            'select',
+            'type',
+            array(
+                'required'      => true,
+                'label'         => mt('monitoring', 'Backend Type'),
+                'description'   => mt('monitoring', 'The data source used for retrieving monitoring information'),
+                'multiOptions'  => $resourceTypes
+            )
+        );
+    }
+}

modules/monitoring/application/forms/Setup/IdoResourcePage.php

@@ -0,0 +1,89 @@
+<?php
+// {{{ICINGA_LICENSE_HEADER}}}
+// {{{ICINGA_LICENSE_HEADER}}}
+
+namespace Icinga\Module\Monitoring\Form\Setup;
+
+use Icinga\Web\Form;
+use Icinga\Web\Form\Element\Note;
+use Icinga\Form\Config\Resource\DbResourceForm;
+
+class IdoResourcePage extends Form
+{
+    public function init()
+    {
+        $this->setName('setup_monitoring_ido');
+    }
+
+    public function createElements(array $formData)
+    {
+        $this->addElement(
+            'hidden',
+            'type',
+            array(
+                'required'  => true,
+                'value'     => 'db'
+            )
+        );
+        $this->addElement(
+            new Note(
+                'description',
+                array(
+                    'value' => mt(
+                        'monitoring',
+                        'Please fill out the connection details below to access'
+                        . ' the IDO database of your monitoring environment.'
+                    )
+                )
+            )
+        );
+
+        if (isset($formData['skip_validation']) && $formData['skip_validation']) {
+            $this->addSkipValidationCheckbox();
+        } else {
+            $this->addElement(
+                'hidden',
+                'skip_validation',
+                array(
+                    'required'  => true,
+                    'value'     => 0
+                )
+            );
+        }
+
+        $livestatusResourceForm = new DbResourceForm();
+        $this->addElements($livestatusResourceForm->createElements($formData)->getElements());
+    }
+
+    public function isValid($data)
+    {
+        if (false === parent::isValid($data)) {
+            return false;
+        }
+
+        if (false === isset($data['skip_validation']) || $data['skip_validation'] == 0) {
+            if (false === DbResourceForm::isValidResource($this)) {
+                $this->addSkipValidationCheckbox();
+                return false;
+            }
+        }
+
+        return true;
+    }
+
+    /**
+     * Add a checkbox to the form by which the user can skip the connection validation
+     */
+    protected function addSkipValidationCheckbox()
+    {
+        $this->addElement(
+            'checkbox',
+            'skip_validation',
+            array(
+                'required'      => true,
+                'label'         => t('Skip Validation'),
+                'description'   => t('Check this to not to validate connectivity with the given database server')
+            )
+        );
+    }
+}

modules/monitoring/application/forms/Setup/InstancePage.php

@@ -0,0 +1,40 @@
+<?php
+// {{{ICINGA_LICENSE_HEADER}}}
+// {{{ICINGA_LICENSE_HEADER}}}
+
+namespace Icinga\Module\Monitoring\Form\Setup;
+
+use Icinga\Web\Form;
+use Icinga\Web\Form\Element\Note;
+use Icinga\Module\Monitoring\Form\Config\InstanceConfigForm;
+
+class InstancePage extends Form
+{
+    public function init()
+    {
+        $this->setName('setup_monitoring_instance');
+    }
+
+    public function createElements(array $formData)
+    {
+        $this->addElement(
+            new Note(
+                'description',
+                array(
+                    'value' => mt(
+                        'monitoring',
+                        'Please define the settings specific to your monitoring instance below.'
+                    )
+                )
+            )
+        );
+
+        if (isset($formData['host'])) {
+            $formData['type'] = 'remote'; // This is necessary as the type element gets ignored by Form::getValues()
+        }
+
+        $instanceConfigForm = new InstanceConfigForm();
+        $instanceConfigForm->createElements($formData);
+        $this->addElements($instanceConfigForm->getElements());
+    }
+}

modules/monitoring/application/forms/Setup/LivestatusResourcePage.php

@@ -0,0 +1,89 @@
+<?php
+// {{{ICINGA_LICENSE_HEADER}}}
+// {{{ICINGA_LICENSE_HEADER}}}
+
+namespace Icinga\Module\Monitoring\Form\Setup;
+
+use Icinga\Web\Form;
+use Icinga\Web\Form\Element\Note;
+use Icinga\Form\Config\Resource\LivestatusResourceForm;
+
+class LivestatusResourcePage extends Form
+{
+    public function init()
+    {
+        $this->setName('setup_monitoring_livestatus');
+    }
+
+    public function createElements(array $formData)
+    {
+        $this->addElement(
+            'hidden',
+            'type',
+            array(
+                'required'  => true,
+                'value'     => 'livestatus'
+            )
+        );
+        $this->addElement(
+            new Note(
+                'description',
+                array(
+                    'value' => mt(
+                        'monitoring',
+                        'Please fill out the connection details below to access the Livestatus'
+                        . ' socket interface for your monitoring environment.'
+                    )
+                )
+            )
+        );
+
+        if (isset($formData['skip_validation']) && $formData['skip_validation']) {
+            $this->addSkipValidationCheckbox();
+        } else {
+            $this->addElement(
+                'hidden',
+                'skip_validation',
+                array(
+                    'required'  => true,
+                    'value'     => 0
+                )
+            );
+        }
+
+        $livestatusResourceForm = new LivestatusResourceForm();
+        $this->addElements($livestatusResourceForm->createElements($formData)->getElements());
+    }
+
+    public function isValid($data)
+    {
+        if (false === parent::isValid($data)) {
+            return false;
+        }
+
+        if (false === isset($data['skip_validation']) || $data['skip_validation'] == 0) {
+            if (false === LivestatusResourceForm::isValidResource($this)) {
+                $this->addSkipValidationCheckbox();
+                return false;
+            }
+        }
+
+        return true;
+    }
+
+    /**
+     * Add a checkbox to the form by which the user can skip the connection validation
+     */
+    protected function addSkipValidationCheckbox()
+    {
+        $this->addElement(
+            'checkbox',
+            'skip_validation',
+            array(
+                'required'      => true,
+                'label'         => t('Skip Validation'),
+                'description'   => t('Check this to not to validate connectivity with the given Livestatus socket')
+            )
+        );
+    }
+}

modules/monitoring/application/forms/Setup/SecurityPage.php

@@ -0,0 +1,36 @@
+<?php
+// {{{ICINGA_LICENSE_HEADER}}}
+// {{{ICINGA_LICENSE_HEADER}}}
+
+namespace Icinga\Module\Monitoring\Form\Setup;
+
+use Icinga\Web\Form;
+use Icinga\Web\Form\Element\Note;
+use Icinga\Module\Monitoring\Form\Config\SecurityConfigForm;
+
+class SecurityPage extends Form
+{
+    public function init()
+    {
+        $this->setName('setup_monitoring_security');
+    }
+
+    public function createElements(array $formData)
+    {
+        $this->addElement(
+            new Note(
+                'description',
+                array(
+                    'value' => mt(
+                        'monitoring',
+                        'To protect your monitoring environment against prying eyes please fill out the settings below.'
+                    )
+                )
+            )
+        );
+
+        $securityConfigForm = new SecurityConfigForm();
+        $securityConfigForm->createElements($formData);
+        $this->addElements($securityConfigForm->getElements());
+    }
+}

modules/monitoring/application/forms/Setup/WelcomePage.php

@@ -0,0 +1,65 @@
+<?php
+// {{{ICINGA_LICENSE_HEADER}}}
+// {{{ICINGA_LICENSE_HEADER}}}
+
+namespace Icinga\Module\Monitoring\Form\Setup;
+
+use Icinga\Web\Form;
+use Icinga\Web\Form\Element\Note;
+
+class WelcomePage extends Form
+{
+    public function init()
+    {
+        $this->setName('setup_monitoring_welcome');
+    }
+
+    public function createElements(array $formData)
+    {
+        $this->addElement(
+            new Note(
+                'welcome',
+                array(
+                    'value' => mt('monitoring', 'Welcome to the installation of the monitoring module for Icinga Web 2!'),
+                    'decorators'    => array(
+                        'ViewHelper',
+                        array('HtmlTag', array('tag' => 'h2'))
+                    )
+                )
+            )
+        );
+
+        $this->addElement(
+            new Note(
+                'core_hint',
+                array(
+                    'value' => mt('monitoring', 'This is the core module for Icinga Web 2.')
+                )
+            )
+        );
+
+        $this->addElement(
+            new Note(
+                'description',
+                array(
+                    'value' => mt(
+                        'monitoring',
+                        'It offers various status and reporting views with powerful filter capabilities that allow'
+                        . ' you to keep track of the most important events in your monitoring environment.'
+                    )
+                )
+            )
+        );
+
+        $this->addDisplayGroup(
+            array('core_hint', 'description'),
+            'info',
+            array(
+                'decorators' => array(
+                    'FormElements',
+                    array('HtmlTag', array('tag' => 'div', 'class' => 'info'))
+                )
+            )
+        );
+    }
+}

modules/monitoring/library/Monitoring/Installation/BackendStep.php

@@ -0,0 +1,177 @@
+<?php
+// {{{ICINGA_LICENSE_HEADER}}}
+// {{{ICINGA_LICENSE_HEADER}}}
+
+namespace Icinga\Module\Monitoring\Installation;
+
+use Exception;
+use Zend_Config;
+use Icinga\Web\Setup\Step;
+use Icinga\Application\Config;
+use Icinga\Config\PreservingIniWriter;
+
+class BackendStep extends Step
+{
+    protected $data;
+
+    protected $backendIniError;
+
+    protected $resourcesIniError;
+
+    public function __construct(array $data)
+    {
+        $this->data = $data;
+    }
+
+    public function apply()
+    {
+        $success = $this->createBackendsIni();
+        $success &= $this->createResourcesIni();
+        return $success;
+    }
+
+    protected function createBackendsIni()
+    {
+        $config = array();
+        $config[$this->data['backendConfig']['name']] = array(
+            'type'      => $this->data['backendConfig']['type'],
+            'resource'  => $this->data['resourceConfig']['name']
+        );
+
+        try {
+            $writer = new PreservingIniWriter(array(
+                'config'    => new Zend_Config($config),
+                'filename'  => Config::resolvePath('modules/monitoring/backends.ini'),
+                'filemode'  => octdec($this->data['fileMode'])
+            ));
+            $writer->write();
+        } catch (Exception $e) {
+            $this->backendIniError = $e;
+            return false;
+        }
+
+        $this->backendIniError = false;
+        return true;
+    }
+
+    protected function createResourcesIni()
+    {
+        $resourceConfig = $this->data['resourceConfig'];
+        $resourceName = $resourceConfig['name'];
+        unset($resourceConfig['name']);
+
+        try {
+            $config = Config::app('resources', true);
+            $config->merge(new Zend_Config(array($resourceName => $resourceConfig)));
+
+            $writer = new PreservingIniWriter(array(
+                'config'    => $config,
+                'filename'  => Config::resolvePath('resources.ini'),
+                'filemode'  => octdec($this->data['fileMode'])
+            ));
+            $writer->write();
+        } catch (Exception $e) {
+            $this->resourcesIniError = $e;
+            return false;
+        }
+
+        $this->resourcesIniError = false;
+        return true;
+    }
+
+    public function getSummary()
+    {
+        $pageTitle = '<h2>' . mt('monitoring', 'Monitoring Backend') . '</h2>';
+        $backendDescription = '<p>' . sprintf(
+            mt(
+                'monitoring',
+                'Icinga Web 2 will retrieve information from your monitoring environment'
+                . ' using a backend called "%s" and the specified resource below:'
+            ),
+            $this->data['backendConfig']['name']
+        ) . '</p>';
+
+        if ($this->data['resourceConfig']['type'] === 'db') {
+            $resourceTitle = '<h3>' . mt('monitoring', 'Database Resource') . '</h3>';
+            $resourceHtml = ''
+                . '<table>'
+                . '<tbody>'
+                . '<tr>'
+                . '<td><strong>' . t('Resource Name') . '</strong></td>'
+                . '<td>' . $this->data['resourceConfig']['name'] . '</td>'
+                . '</tr>'
+                . '<tr>'
+                . '<td><strong>' . t('Database Type') . '</strong></td>'
+                . '<td>' . $this->data['resourceConfig']['db'] . '</td>'
+                . '</tr>'
+                . '<tr>'
+                . '<td><strong>' . t('Host') . '</strong></td>'
+                . '<td>' . $this->data['resourceConfig']['host'] . '</td>'
+                . '</tr>'
+                . '<tr>'
+                . '<td><strong>' . t('Port') . '</strong></td>'
+                . '<td>' . $this->data['resourceConfig']['port'] . '</td>'
+                . '</tr>'
+                . '<tr>'
+                . '<td><strong>' . t('Database Name') . '</strong></td>'
+                . '<td>' . $this->data['resourceConfig']['dbname'] . '</td>'
+                . '</tr>'
+                . '<tr>'
+                . '<td><strong>' . t('Username') . '</strong></td>'
+                . '<td>' . $this->data['resourceConfig']['username'] . '</td>'
+                . '</tr>'
+                . '<tr>'
+                . '<td><strong>' . t('Password') . '</strong></td>'
+                . '<td>' . str_repeat('*', strlen($this->data['resourceConfig']['password'])) . '</td>'
+                . '</tr>'
+                . '</tbody>'
+                . '</table>';
+        } else { // $this->data['resourceConfig']['type'] === 'livestatus'
+            $resourceTitle = '<h3>' . mt('monitoring', 'Livestatus Resource') . '</h3>';
+            $resourceHtml = ''
+                . '<table>'
+                . '<tbody>'
+                . '<tr>'
+                . '<td><strong>' . t('Resource Name') . '</strong></td>'
+                . '<td>' . $this->data['resourceConfig']['name'] . '</td>'
+                . '</tr>'
+                . '<tr>'
+                . '<td><strong>' . t('Socket') . '</strong></td>'
+                . '<td>' . $this->data['resourceConfig']['socket'] . '</td>'
+                . '</tr>'
+                . '</tbody>'
+                . '</table>';
+        }
+
+        return $pageTitle . '<div class="topic">' . $backendDescription . $resourceTitle . $resourceHtml . '</div>';
+    }
+
+    public function getReport()
+    {
+        $report = '';
+        if ($this->backendIniError === false) {
+            $message = mt('monitoring', 'Monitoring backend configuration has been successfully written to: %s');
+            $report .= '<p>' . sprintf($message, Config::resolvePath('modules/monitoring/backends.ini')) . '</p>';
+        } elseif ($this->backendIniError !== null) {
+            $message = mt(
+                'monitoring',
+                'Monitoring backend configuration could not be written to: %s; An error occured:'
+            );
+            $report .= '<p class="error">' . sprintf(
+                $message,
+                Config::resolvePath('modules/monitoring/backends.ini')
+            ) . '</p><p>' . $this->backendIniError->getMessage() . '</p>';
+        }
+
+        if ($this->resourcesIniError === false) {
+            $message = mt('monitoring', 'Resource configuration has been successfully updated: %s');
+            $report .= '<p>' . sprintf($message, Config::resolvePath('resources.ini')) . '</p>';
+        } elseif ($this->resourcesIniError !== null) {
+            $message = mt('monitoring', 'Resource configuration could not be udpated: %s; An error occured:');
+            $report .= '<p class="error">' . sprintf($message, Config::resolvePath('resources.ini')) . '</p>'
+                . '<p>' . $this->resourcesIniError->getMessage() . '</p>';
+        }
+
+        return $report;
+    }
+}

modules/monitoring/library/Monitoring/Installation/InstanceStep.php

@@ -0,0 +1,105 @@
+<?php
+// {{{ICINGA_LICENSE_HEADER}}}
+// {{{ICINGA_LICENSE_HEADER}}}
+
+namespace Icinga\Module\Monitoring\Installation;
+
+use Exception;
+use Zend_Config;
+use Icinga\Web\Setup\Step;
+use Icinga\Application\Config;
+use Icinga\Config\PreservingIniWriter;
+
+class InstanceStep extends Step
+{
+    protected $data;
+
+    protected $error;
+
+    public function __construct(array $data)
+    {
+        $this->data = $data;
+    }
+
+    public function apply()
+    {
+        $instanceConfig = $this->data['instanceConfig'];
+        $instanceName = $instanceConfig['name'];
+        unset($instanceConfig['name']);
+
+        try {
+            $writer = new PreservingIniWriter(array(
+                'config'    => new Zend_Config(array($instanceName => $instanceConfig)),
+                'filename'  => Config::resolvePath('modules/monitoring/instances.ini'),
+                'filemode'  => octdec($this->data['fileMode'])
+            ));
+            $writer->write();
+        } catch (Exception $e) {
+            $this->error = $e;
+            return false;
+        }
+
+        $this->error = false;
+        return true;
+    }
+
+    public function getSummary()
+    {
+        $pageTitle = '<h2>' . mt('monitoring', 'Monitoring Instance') . '</h2>';
+
+        if (isset($this->data['instanceConfig']['host'])) {
+            $pipeHtml = '<p>' . sprintf(
+                mt(
+                    'monitoring',
+                    'Icinga Web 2 will use the named pipe located on a remote machine at "%s" to send commands'
+                    . ' to your monitoring instance by using the connection details listed below:'
+                ),
+                $this->data['instanceConfig']['path']
+            ) . '</p>';
+
+            $pipeHtml .= ''
+                . '<table>'
+                . '<tbody>'
+                . '<tr>'
+                . '<td><strong>' . mt('monitoring', 'Remote Host') . '</strong></td>'
+                . '<td>' . $this->data['instanceConfig']['host'] . '</td>'
+                . '</tr>'
+                . '<tr>'
+                . '<td><strong>' . mt('monitoring', 'Remote SSH Port') . '</strong></td>'
+                . '<td>' . $this->data['instanceConfig']['port'] . '</td>'
+                . '</tr>'
+                . '<tr>'
+                . '<td><strong>' . mt('monitoring', 'Remote SSH User') . '</strong></td>'
+                . '<td>' . $this->data['instanceConfig']['user'] . '</td>'
+                . '</tr>'
+                . '</tbody>'
+                . '</table>';
+        } else {
+            $pipeHtml = '<p>' . sprintf(
+                mt(
+                    'monitoring',
+                    'Icinga Web 2 will use the named pipe located at "%s"'
+                    . ' to send commands to your monitoring instance.'
+                ),
+                $this->data['instanceConfig']['path']
+            ) . '</p>';
+        }
+
+        return $pageTitle . '<div class="topic">' . $pipeHtml . '</div>';
+    }
+
+    public function getReport()
+    {
+        if ($this->error === false) {
+            $message = mt('monitoring', 'Monitoring instance configuration has been successfully created: %s');
+            return '<p>' . sprintf($message, Config::resolvePath('modules/monitoring/instances.ini')) . '</p>';
+        } elseif ($this->error !== null) {
+            $message = mt(
+                'monitoring',
+                'Monitoring instance configuration could not be written to: %s; An error occured:'
+            );
+            return '<p class="error">' . sprintf($message, Config::resolvePath('modules/monitoring/instances.ini'))
+                . '</p><p>' . $this->error->getMessage() . '</p>';
+        }
+    }
+}

modules/monitoring/library/Monitoring/Installation/SecurityStep.php

@@ -0,0 +1,81 @@
+<?php
+// {{{ICINGA_LICENSE_HEADER}}}
+// {{{ICINGA_LICENSE_HEADER}}}
+
+namespace Icinga\Module\Monitoring\Installation;
+
+use Exception;
+use Zend_Config;
+use Icinga\Web\Setup\Step;
+use Icinga\Application\Config;
+use Icinga\Config\PreservingIniWriter;
+
+class SecurityStep extends Step
+{
+    protected $data;
+
+    protected $error;
+
+    public function __construct(array $data)
+    {
+        $this->data = $data;
+    }
+
+    public function apply()
+    {
+        $config = array();
+        $config['security'] = $this->data['securityConfig'];
+
+        try {
+            $writer = new PreservingIniWriter(array(
+                'config'    => new Zend_Config($config),
+                'filename'  => Config::resolvePath('modules/monitoring/config.ini'),
+                'filemode'  => octdec($this->data['fileMode'])
+            ));
+            $writer->write();
+        } catch (Exception $e) {
+            $this->error = $e;
+            return false;
+        }
+
+        $this->error = false;
+        return true;
+    }
+
+    public function getSummary()
+    {
+        $pageTitle = '<h2>' . mt('monitoring', 'Monitoring Security') . '</h2>';
+        $pageDescription = '<p>' . mt(
+            'monitoring',
+            'Icinga Web 2 will protect your monitoring environment against'
+            . ' prying eyes using the configuration specified below:'
+        ) . '</p>';
+
+        $pageHtml = ''
+            . '<table>'
+            . '<tbody>'
+            . '<tr>'
+            . '<td><strong>' . mt('monitoring', 'Protected Custom Variables') . '</strong></td>'
+            . '<td>' . $this->data['securityConfig']['protected_customvars'] . '</td>'
+            . '</tr>'
+            . '</tbody>'
+            . '</table>';
+
+        return $pageTitle . '<div class="topic">' . $pageDescription . $pageHtml . '</div>';
+    }
+
+    public function getReport()
+    {
+        if ($this->error === false) {
+            $message = mt('monitoring', 'Monitoring security configuration has been successfully created: %s');
+            return '<p>' . sprintf($message, Config::resolvePath('modules/monitoring/config.ini')) . '</p>';
+        } elseif ($this->error !== null) {
+            $message = mt(
+                'monitoring',
+                'Monitoring security configuration could not be written to: %s; An error occured:'
+            );
+            return '<p class="error">' . sprintf($message, Config::resolvePath('modules/monitoring/config.ini'))
+                . '</p><p>' . $this->error->getMessage() . '</p>';
+        }
+    }
+}

modules/monitoring/library/Monitoring/Setup.php

@@ -0,0 +1,192 @@
+<?php
+// {{{ICINGA_LICENSE_HEADER}}}
+// {{{ICINGA_LICENSE_HEADER}}}
+
+namespace Icinga\Module\Monitoring;
+
+use Icinga\Web\Form;
+use Icinga\Web\Wizard;
+use Icinga\Web\Request;
+use Icinga\Web\Setup\Installer;
+use Icinga\Web\Setup\MakeDirStep;
+use Icinga\Web\Setup\EnableModuleStep;
+use Icinga\Web\Setup\SetupWizard;
+use Icinga\Web\Setup\Requirements;
+use Icinga\Module\Monitoring\Installation\BackendStep;
+use Icinga\Module\Monitoring\Installation\InstanceStep;
+use Icinga\Module\Monitoring\Installation\SecurityStep;
+use Icinga\Form\Setup\SummaryPage;
+use Icinga\Form\Setup\RequirementsPage;
+use Icinga\Module\Monitoring\Form\Setup\WelcomePage;
+use Icinga\Module\Monitoring\Form\Setup\BackendPage;
+use Icinga\Module\Monitoring\Form\Setup\InstancePage;
+use Icinga\Module\Monitoring\Form\Setup\SecurityPage;
+use Icinga\Module\Monitoring\Form\Setup\IdoResourcePage;
+use Icinga\Module\Monitoring\Form\Setup\LivestatusResourcePage;
+
+/**
+ * Monitoring Module Setup Wizard
+ */
+class Setup extends Wizard implements SetupWizard
+{
+    /**
+     * @see Wizard::init()
+     */
+    public function init()
+    {
+        $this->addPage(new WelcomePage());
+        $this->addPage(new RequirementsPage());
+        $this->addPage(new BackendPage());
+        $this->addPage(new IdoResourcePage());
+        $this->addPage(new LivestatusResourcePage());
+        $this->addPage(new InstancePage());
+        $this->addPage(new SecurityPage());
+        $this->addPage(new SummaryPage());
+    }
+
+    /**
+     * @see Wizard::setupPage()
+     */
+    public function setupPage(Form $page, Request $request)
+    {
+        if ($page->getName() === 'setup_requirements') {
+            $page->setRequirements($this->getRequirements());
+        } elseif ($page->getName() === 'setup_summary') {
+            $page->setSummary($this->getInstaller()->getSummary());
+            $page->setSubjectTitle(mt('monitoring', 'the monitoring module', 'setup.summary.subject'));
+        } elseif (
+            $this->getDirection() === static::FORWARD
+            && ($page->getName() === 'setup_monitoring_ido' || $page->getName() === 'setup_monitoring_livestatus')
+        ) {
+            if ((($dbResourceData = $this->getPageData('setup_db_resource')) !== null
+                 && $dbResourceData['name'] === $request->getPost('name'))
+                || (($ldapResourceData = $this->getPageData('setup_ldap_resource')) !== null
+                    && $ldapResourceData['name'] === $request->getPost('name'))
+            ) {
+                $page->addError(mt('monitoring', 'The given resource name is already in use.'));
+            }
+        }
+    }
+
+    /**
+     * @see Wizard::getNewPage()
+     */
+    protected function getNewPage($requestedPage, Form $originPage)
+    {
+        $skip = false;
+        $newPage = parent::getNewPage($requestedPage, $originPage);
+        if ($newPage->getName() === 'setup_monitoring_ido') {
+            $backendData = $this->getPageData('setup_monitoring_backend');
+            $skip = $backendData['type'] !== 'ido';
+        } elseif ($newPage->getName() === 'setup_monitoring_livestatus') {
+            $backendData = $this->getPageData('setup_monitoring_backend');
+            $skip = $backendData['type'] !== 'livestatus';
+        }
+
+        if ($skip) {
+            if ($this->hasPageData($newPage->getName())) {
+                $pageData = & $this->getPageData();
+                unset($pageData[$newPage->getName()]);
+            }
+
+            $pages = $this->getPages();
+            if ($this->getDirection() === static::FORWARD) {
+                $nextPage = $pages[array_search($newPage, $pages, true) + 1];
+                $newPage = $this->getNewPage($nextPage->getName(), $newPage);
+            } else { // $this->getDirection() === static::BACKWARD
+                $previousPage = $pages[array_search($newPage, $pages, true) - 1];
+                $newPage = $this->getNewPage($previousPage->getName(), $newPage);
+            }
+        }
+
+        return $newPage;
+    }
+
+    /**
+     * @see Wizard::addButtons()
+     */
+    protected function addButtons(Form $page)
+    {
+        parent::addButtons($page);
+
+        $pages = $this->getPages();
+        $index = array_search($page, $pages, true);
+        if ($index === 0) {
+            // Used t() here as "Start" is too generic and already translated in the icinga domain
+            $page->getElement(static::BTN_NEXT)->setLabel(t('Start', 'setup.welcome.btn.next'));
+        } elseif ($index === count($pages) - 1) {
+            $page->getElement(static::BTN_NEXT)->setLabel(
+                mt('monitoring', 'Install the monitoring module for Icinga Web 2', 'setup.summary.btn.finish')
+            );
+        }
+    }
+
+    /**
+     * @see SetupWizard::getInstaller()
+     */
+    public function getInstaller()
+    {
+        $pageData = $this->getPageData();
+        $installer = new Installer();
+
+        $installer->addStep(
+            new MakeDirStep(
+                array($this->getConfigDir() . '/modules/monitoring'),
+                $pageData['setup_general_config']['global_filemode']
+            )
+        );
+
+        $installer->addStep(
+            new BackendStep(array(
+                'backendConfig'     => $pageData['setup_monitoring_backend'],
+                'resourceConfig'    => isset($pageData['setup_monitoring_ido'])
+                    ? array_diff_key($pageData['setup_monitoring_ido'], array('skip_validation' => null))
+                    : array_diff_key($pageData['setup_monitoring_livestatus'], array('skip_validation' => null)),
+                'fileMode'          => $pageData['setup_general_config']['global_filemode']
+            ))
+        );
+
+        $installer->addStep(
+            new InstanceStep(array(
+                'instanceConfig'    => $pageData['setup_monitoring_instance'],
+                'fileMode'          => $pageData['setup_general_config']['global_filemode']
+            ))
+        );
+
+        $installer->addStep(
+            new SecurityStep(array(
+                'securityConfig'    => $pageData['setup_monitoring_security'],
+                'fileMode'          => $pageData['setup_general_config']['global_filemode']
+            ))
+        );
+
+        $installer->addStep(new EnableModuleStep('monitoring'));
+
+        return $installer;
+    }
+
+    /**
+     * @see SetupWizard::getRequirements()
+     */
+    public function getRequirements()
+    {
+        return new Requirements();
+    }
+
+    /**
+     * Return the configuration directory of Icinga Web 2
+     *
+     * @return  string
+     */
+    protected function getConfigDir()
+    {
+        if (array_key_exists('ICINGAWEB_CONFIGDIR', $_SERVER)) {
+            $configDir = $_SERVER['ICINGAWEB_CONFIGDIR'];
+        } else {
+            $configDir = '/etc/icingaweb';
+        }
+
+        $canonical = realpath($configDir);
+        return $canonical ? $canonical : $configDir;
+    }
+}

public/css/icinga/setup.less

@@ -149,8 +149,7 @@
 }
 
 #setup table.requirements {
-  margin-top: -1em;
+  margin: -1em -1em 0;
-  margin-left: -1em;
   border-spacing: 1em;
   border-collapse: separate;
 
@@ -300,6 +299,7 @@
 
   div.info {
     display: inline-block;
+    max-width: 66%;
     padding: 0 1em;
     border-radius: 1em;
     background-color: #eee;
@@ -346,6 +346,16 @@
   }
 }
 
+#setup_monitoring_welcome {
+  .welcome-page;
+  margin-top: 0;
+  padding: 1em;
+
+  h2 {
+    margin-top: 0;
+  }
+}
+
 #setup {
   div.module-wizard {
     width: auto;