Adding upstream version 2.5.0.upstream/2.5.0upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

9 files changed, 1824 insertions, 0 deletions

diff --git a/application/forms/AddNodeForm.php b/application/forms/AddNodeForm.php
new file mode 100644
index 0000000..3840d8a
--- /dev/null
+++ b/application/forms/AddNodeForm.php
@@ -0,0 +1,412 @@
+<?php
+
+namespace Icinga\Module\Businessprocess\Forms;
+
+use Exception;
+use Icinga\Module\Businessprocess\BpConfig;
+use Icinga\Module\Businessprocess\BpNode;
+use Icinga\Module\Businessprocess\Common\Sort;
+use Icinga\Module\Businessprocess\Modification\ProcessChanges;
+use Icinga\Module\Businessprocess\Node;
+use Icinga\Module\Businessprocess\Storage\Storage;
+use Icinga\Module\Businessprocess\Web\Form\Element\IplStateOverrides;
+use Icinga\Module\Businessprocess\Web\Form\Validator\HostServiceTermValidator;
+use Icinga\Module\Monitoring\Backend\MonitoringBackend;
+use Icinga\Web\Session\SessionNamespace;
+use ipl\Html\HtmlElement;
+use ipl\Html\Text;
+use ipl\I18n\Translation;
+use ipl\Stdlib\Str;
+use ipl\Web\Compat\CompatForm;
+use ipl\Web\FormElement\TermInput;
+use ipl\Web\Url;
+
+class AddNodeForm extends CompatForm
+{
+    use Sort;
+    use Translation;
+
+    /** @var Storage */
+    protected $storage;
+
+    /** @var ?BpConfig */
+    protected $bp;
+
+    /** @var ?BpNode */
+    protected $parent;
+
+    /** @var SessionNamespace */
+    protected $session;
+
+    /**
+     * Set the storage to use
+     *
+     * @param Storage $storage
+     *
+     * @return $this
+     */
+    public function setStorage(Storage $storage): self
+    {
+        $this->storage = $storage;
+
+        return $this;
+    }
+
+    /**
+     * Set the affected configuration
+     *
+     * @param BpConfig $bp
+     *
+     * @return $this
+     */
+    public function setProcess(BpConfig $bp): self
+    {
+        $this->bp = $bp;
+
+        return $this;
+    }
+
+    /**
+     * Set the affected sub-process
+     *
+     * @param ?BpNode $node
+     *
+     * @return $this
+     */
+    public function setParentNode(BpNode $node = null): self
+    {
+        $this->parent = $node;
+
+        return $this;
+    }
+
+    /**
+     * Set the user's session
+     *
+     * @param SessionNamespace $session
+     *
+     * @return $this
+     */
+    public function setSession(SessionNamespace $session): self
+    {
+        $this->session = $session;
+
+        return $this;
+    }
+
+    protected function assemble()
+    {
+        if ($this->parent !== null) {
+            $title = sprintf($this->translate('Add a node to %s'), $this->parent->getAlias());
+            $nodeTypes = [
+                'host' => $this->translate('Host'),
+                'service' => $this->translate('Service'),
+                'process' => $this->translate('Existing Process'),
+                'new-process' => $this->translate('New Process')
+            ];
+        } else {
+            $title = $this->translate('Add a new root node');
+            if (! $this->bp->isEmpty()) {
+                $nodeTypes = [
+                    'process' => $this->translate('Existing Process'),
+                    'new-process' => $this->translate('New Process')
+                ];
+            } else {
+                $nodeTypes = [];
+            }
+        }
+
+        $this->addHtml(new HtmlElement('h2', null, Text::create($title)));
+
+        if (! empty($nodeTypes)) {
+            $this->addElement('select', 'node_type', [
+                'label' => $this->translate('Node type'),
+                'options' => array_merge(
+                    ['' => ' - ' . $this->translate('Please choose') . ' - '],
+                    $nodeTypes
+                ),
+                'disabledOptions' => [''],
+                'class' => 'autosubmit',
+                'required' => true,
+                'ignore' => true
+            ]);
+
+            $nodeType = $this->getPopulatedValue('node_type');
+        } else {
+            $nodeType = 'new-process';
+        }
+
+        if ($nodeType === 'new-process') {
+            $this->assembleNewProcessElements();
+        } elseif ($nodeType === 'process') {
+            $this->assembleExistingProcessElements();
+        } elseif ($nodeType === 'host') {
+            $this->assembleHostElements();
+        } elseif ($nodeType === 'service') {
+            $this->assembleServiceElements();
+        }
+
+        $this->addElement('submit', 'submit', [
+            'label' => $this->translate('Add Process')
+        ]);
+    }
+
+    protected function assembleNewProcessElements(): void
+    {
+        $this->addElement('text', 'name', [
+            'required'     => true,
+            'ignore'       => true,
+            'label'        => $this->translate('ID'),
+            'description'  => $this->translate('This is the unique identifier of this process'),
+            'validators'   => [
+                'callback' => function ($value, $validator) {
+                    if ($this->parent !== null ? $this->parent->hasChild($value) : $this->bp->hasRootNode($value)) {
+                        $validator->addMessage(
+                            sprintf($this->translate('%s is already defined in this process'), $value)
+                        );
+
+                        return false;
+                    }
+
+                    return true;
+                }
+            ]
+        ]);
+
+        $this->addElement('text', 'alias', [
+            'label'       => $this->translate('Display Name'),
+            'description' => $this->translate(
+                'Usually this name will be shown for this node. Equals ID if not given'
+            ),
+        ]);
+
+        $this->addElement('select', 'operator', [
+            'required'     => true,
+            'label'        => $this->translate('Operator'),
+            'multiOptions' => Node::getOperators()
+        ]);
+
+        $display = 1;
+        if (! $this->bp->isEmpty() && $this->bp->getMetadata()->isManuallyOrdered()) {
+            $rootNodes = self::applyManualSorting($this->bp->getRootNodes());
+            $display = end($rootNodes)->getDisplay() + 1;
+        }
+        $this->addElement('select', 'display', [
+            'required'     => true,
+            'label'        => $this->translate('Visualization'),
+            'description'  => $this->translate('Where to show this process'),
+            'value'        => $this->parent !== null ? '0' : "$display",
+            'multiOptions' => [
+                "$display" => $this->translate('Toplevel Process'),
+                '0' => $this->translate('Subprocess only'),
+            ]
+        ]);
+
+        $this->addElement('text', 'infoUrl', [
+            'label'       => $this->translate('Info URL'),
+            'description' => $this->translate('URL pointing to more information about this node')
+        ]);
+    }
+
+    protected function assembleExistingProcessElements(): void
+    {
+        $termValidator = function (array $terms) {
+            foreach ($terms as $term) {
+                /** @var TermInput\ValidatedTerm $term */
+                $nodeName = $term->getSearchValue();
+                if ($nodeName[0] === '@') {
+                    if ($this->parent === null) {
+                        $term->setMessage($this->translate('Imported nodes cannot be used as root nodes'));
+                    } elseif (strpos($nodeName, ':') === false) {
+                        $term->setMessage($this->translate('Missing node name'));
+                    } else {
+                        [$config, $nodeName] = Str::trimSplit(substr($nodeName, 1), ':', 2);
+                        if (! $this->storage->hasProcess($config)) {
+                            $term->setMessage($this->translate('Config does not exist or access has been denied'));
+                        } else {
+                            try {
+                                $bp = $this->storage->loadProcess($config);
+                            } catch (Exception $e) {
+                                $term->setMessage(
+                                    sprintf($this->translate('Cannot load config: %s'), $e->getMessage())
+                                );
+                            }
+
+                            if (isset($bp)) {
+                                if (! $bp->hasNode($nodeName)) {
+                                    $term->setMessage($this->translate('No node with this name found in config'));
+                                } else {
+                                    $term->setLabel($bp->getNode($nodeName)->getAlias());
+                                }
+                            }
+                        }
+                    }
+                } elseif (! $this->bp->hasNode($nodeName)) {
+                    $term->setMessage($this->translate('No node with this name found in config'));
+                } else {
+                    $term->setLabel($this->bp->getNode($nodeName)->getAlias());
+                }
+
+                if ($this->parent !== null && $this->parent->hasChild($term->getSearchValue())) {
+                    $term->setMessage($this->translate('Already defined in this process'));
+                }
+
+                if ($this->parent !== null && $term->getSearchValue() === $this->parent->getName()) {
+                    $term->setMessage($this->translate('Results in a parent/child loop'));
+                }
+            }
+        };
+
+        $this->addElement(
+            (new TermInput('children'))
+                ->setRequired()
+                ->setVerticalTermDirection()
+                ->setLabel($this->translate('Process Nodes'))
+                ->setSuggestionUrl(Url::fromPath('businessprocess/suggestions/process', [
+                    'node' => isset($this->parent) ? $this->parent->getName() : null,
+                    'config' => $this->bp->getName(),
+                    'showCompact' => true,
+                    '_disableLayout' => true
+                ]))
+                ->on(TermInput::ON_ENRICH, $termValidator)
+                ->on(TermInput::ON_ADD, $termValidator)
+                ->on(TermInput::ON_PASTE, $termValidator)
+                ->on(TermInput::ON_SAVE, $termValidator)
+        );
+    }
+
+    protected function assembleHostElements(): void
+    {
+        if ($this->bp->getBackend() instanceof MonitoringBackend) {
+            $suggestionsPath = 'businessprocess/suggestions/monitoring-host';
+        } else {
+            $suggestionsPath = 'businessprocess/suggestions/icingadb-host';
+        }
+
+        $this->addElement($this->createChildrenElementForObjects(
+            $this->translate('Hosts'),
+            $suggestionsPath
+        ));
+
+        $this->addElement('checkbox', 'host_override', [
+            'ignore' => true,
+            'class' => 'autosubmit',
+            'label' => $this->translate('Override Host State')
+        ]);
+        if ($this->getPopulatedValue('host_override') === 'y') {
+            $this->addElement(new IplStateOverrides('stateOverrides', [
+                'label' => $this->translate('State Overrides'),
+                'options' => [
+                    0 => $this->translate('UP'),
+                    1 => $this->translate('DOWN'),
+                    99 => $this->translate('PENDING')
+                ]
+            ]));
+        }
+    }
+
+    protected function assembleServiceElements(): void
+    {
+        if ($this->bp->getBackend() instanceof MonitoringBackend) {
+            $suggestionsPath = 'businessprocess/suggestions/monitoring-service';
+        } else {
+            $suggestionsPath = 'businessprocess/suggestions/icingadb-service';
+        }
+
+        $this->addElement($this->createChildrenElementForObjects(
+            $this->translate('Services'),
+            $suggestionsPath
+        ));
+
+        $this->addElement('checkbox', 'service_override', [
+            'ignore' => true,
+            'class' => 'autosubmit',
+            'label' => $this->translate('Override Service State')
+        ]);
+        if ($this->getPopulatedValue('service_override') === 'y') {
+            $this->addElement(new IplStateOverrides('stateOverrides', [
+                'label' => $this->translate('State Overrides'),
+                'options' => [
+                    0 => $this->translate('OK'),
+                    1 => $this->translate('WARNING'),
+                    2 => $this->translate('CRITICAL'),
+                    3 => $this->translate('UNKNOWN'),
+                    99 => $this->translate('PENDING'),
+                ]
+            ]));
+        }
+    }
+
+    protected function createChildrenElementForObjects(string $label, string $suggestionsPath): TermInput
+    {
+        $termValidator = function (array $terms) {
+            (new HostServiceTermValidator())
+                ->setParent($this->parent)
+                ->isValid($terms);
+        };
+
+        return (new TermInput('children'))
+            ->setRequired()
+            ->setLabel($label)
+            ->setVerticalTermDirection()
+            ->setSuggestionUrl(Url::fromPath($suggestionsPath, [
+                'node' => isset($this->parent) ? $this->parent->getName() : null,
+                'config' => $this->bp->getName(),
+                'showCompact' => true,
+                '_disableLayout' => true
+            ]))
+            ->on(TermInput::ON_ENRICH, $termValidator)
+            ->on(TermInput::ON_ADD, $termValidator)
+            ->on(TermInput::ON_PASTE, $termValidator)
+            ->on(TermInput::ON_SAVE, $termValidator);
+    }
+
+    protected function onSuccess()
+    {
+        $changes = ProcessChanges::construct($this->bp, $this->session);
+
+        $nodeType = $this->getValue('node_type');
+        if (! $nodeType || $nodeType === 'new-process') {
+            $properties = $this->getValues();
+            if (! $properties['alias']) {
+                unset($properties['alias']);
+            }
+
+            if ($this->parent !== null) {
+                $properties['parentName'] = $this->parent->getName();
+            }
+
+            $changes->createNode(BpConfig::escapeName($this->getValue('name')), $properties);
+        } else {
+            /** @var TermInput $term */
+            $term = $this->getElement('children');
+            $children = array_unique(array_map(function ($term) {
+                return $term->getSearchValue();
+            }, $term->getTerms()));
+
+            if ($nodeType === 'host' || $nodeType === 'service') {
+                $stateOverrides = $this->getValue('stateOverrides');
+                if (! empty($stateOverrides)) {
+                    $childOverrides = [];
+                    foreach ($children as $nodeName) {
+                        $childOverrides[$nodeName] = $stateOverrides;
+                    }
+
+                    $changes->modifyNode($this->parent, [
+                        'stateOverrides' => array_merge($this->parent->getStateOverrides(), $childOverrides)
+                    ]);
+                }
+            }
+
+            if ($this->parent !== null) {
+                $changes->addChildrenToNode($children, $this->parent);
+            } else {
+                foreach ($children as $nodeName) {
+                    $changes->copyNode($nodeName);
+                }
+            }
+        }
+
+        unset($changes);
+    }
+}
diff --git a/application/forms/BpConfigForm.php b/application/forms/BpConfigForm.php
new file mode 100644
index 0000000..8a0bc95
--- /dev/null
+++ b/application/forms/BpConfigForm.php
@@ -0,0 +1,236 @@
+<?php
+
+namespace Icinga\Module\Businessprocess\Forms;
+
+use Icinga\Authentication\Auth;
+use Icinga\Module\Businessprocess\BpConfig;
+use Icinga\Module\Businessprocess\Web\Form\BpConfigBaseForm;
+
+class BpConfigForm extends BpConfigBaseForm
+{
+    protected $deleteButtonName;
+
+    public function setup()
+    {
+        $this->addElement('text', 'name', array(
+            'label' => $this->translate('ID'),
+            'required'    => true,
+            'validators' => array(
+                array(
+                    'validator' => 'StringLength',
+                    'options' => array(
+                        'min' => 2,
+                        'max' => 40
+                    )
+                ),
+                [
+                    'validator' => 'Regex',
+                    'options'   => [
+                        'pattern' => '/^[a-zA-Z0-9](?:[\w\h._-]*)?\w$/',
+                        'messages'  => [
+                            'regexNotMatch' => $this->translate(
+                                'Id must only consist of alphanumeric characters.'
+                                . ' Underscore at the beginning and space, dot and hyphen at the beginning'
+                                . ' and end are not allowed.'
+                            )
+                        ]
+                    ]
+                ]
+            ),
+            'description' => $this->translate(
+                'This is the unique identifier of this process'
+            ),
+        ));
+
+        $this->addElement('text', 'Title', array(
+            'label'       => $this->translate('Display Name'),
+            'description' => $this->translate(
+                'Usually this name will be shown for this process. Equals ID'
+                . ' if not given'
+            ),
+        ));
+
+        $this->addElement('textarea', 'Description', array(
+            'label'       => $this->translate('Description'),
+            'description' => $this->translate(
+                'A slightly more detailed description for this process, about 100-150 characters long'
+            ),
+            'rows' => 4,
+        ));
+
+        if (! empty($this->listAvailableBackends())) {
+            $this->addElement('select', 'Backend', array(
+                'label'       => $this->translate('Backend'),
+                'description' => $this->translate(
+                    'Icinga Web Monitoring Backend where current object states for'
+                    . ' this process should be retrieved from'
+                ),
+                'multiOptions' => array(
+                        null => $this->translate('Use the configured default backend'),
+                    ) + $this->listAvailableBackends()
+            ));
+        }
+
+        $this->addElement('select', 'Statetype', array(
+            'label'       => $this->translate('State Type'),
+            'required'    => true,
+            'description' => $this->translate(
+                'Whether this process should be based on Icinga hard or soft states'
+            ),
+            'multiOptions' => array(
+                'soft' => $this->translate('Use SOFT states'),
+                'hard' => $this->translate('Use HARD states'),
+            )
+        ));
+
+        $this->addElement('select', 'AddToMenu', array(
+            'label'       => $this->translate('Add to menu'),
+            'required'    => true,
+            'description' => $this->translate(
+                'Whether this process should be linked in the main Icinga Web 2 menu'
+            ),
+            'multiOptions' => array(
+                'yes' => $this->translate('Yes'),
+                'no'  => $this->translate('No'),
+            )
+        ));
+
+        $this->addElement('text', 'AllowedUsers', array(
+            'label'       => $this->translate('Allowed Users'),
+            'description' => $this->translate(
+                'Allowed Users (comma-separated)'
+            ),
+        ));
+
+        $this->addElement('text', 'AllowedGroups', array(
+            'label'       => $this->translate('Allowed Groups'),
+            'description' => $this->translate(
+                'Allowed Groups (comma-separated)'
+            ),
+        ));
+
+        $this->addElement('text', 'AllowedRoles', array(
+            'label'       => $this->translate('Allowed Roles'),
+            'description' => $this->translate(
+                'Allowed Roles (comma-separated)'
+            ),
+        ));
+
+        if ($this->bp === null) {
+            $this->setSubmitLabel(
+                $this->translate('Add')
+            );
+        } else {
+            $config = $this->bp;
+
+            $meta = $config->getMetadata();
+            foreach ($meta->getProperties() as $k => $v) {
+                if ($el = $this->getElement($k)) {
+                    $el->setValue($v);
+                }
+            }
+            $this->getElement('name')
+                 ->setValue($config->getName())
+                 ->setAttrib('readonly', true);
+
+            $this->setSubmitLabel(
+                $this->translate('Store')
+            );
+
+            $label = $this->translate('Delete');
+            $el = $this->createElement('submit', $label, array(
+                'data-base-target' => '_main'
+            ))->setLabel($label)->setDecorators(array('ViewHelper'));
+            $this->deleteButtonName = $el->getName();
+            $this->addElement($el);
+        }
+    }
+
+    protected function onSetup()
+    {
+        $this->getElement($this->getSubmitLabel())->setAttrib('data-base-target', '_main');
+    }
+
+    protected function onRequest()
+    {
+        $name = $this->getValue('name');
+
+        if ($this->shouldBeDeleted()) {
+            if ($this->bp->isReferenced()) {
+                $this->addError(sprintf(
+                    $this->translate('Process "%s" cannot be deleted as it has been referenced in other processes'),
+                    $name
+                ));
+            } else {
+                $this->bp->clearAppliedChanges();
+                $this->storage->deleteProcess($name);
+                $this->setSuccessUrl('businessprocess');
+                $this->redirectOnSuccess(sprintf('Process %s has been deleted', $name));
+            }
+        }
+    }
+
+    public function onSuccess()
+    {
+        $name = $this->getValue('name');
+
+        if ($this->bp === null) {
+            if ($this->storage->hasProcess($name)) {
+                $this->addError(sprintf(
+                    $this->translate('A process named "%s" already exists'),
+                    $name
+                ));
+
+                return;
+            }
+
+            // New config
+            $config = new BpConfig();
+            $config->setName($name);
+
+            if (! $this->prepareMetadata($config)) {
+                return;
+            }
+
+            $this->setSuccessUrl(
+                $this->getSuccessUrl()->setParams(
+                    array('config' => $name, 'unlocked' => true)
+                )
+            );
+            $this->setSuccessMessage(sprintf('Process %s has been created', $name));
+        } else {
+            $config = $this->bp;
+            $this->setSuccessMessage(sprintf('Process %s has been stored', $name));
+        }
+        $meta = $config->getMetadata();
+        foreach ($this->getValues() as $key => $value) {
+            if (! in_array($key, ['Title', 'Description', 'Backend'], true)
+                && ($value === null || $value === '')) {
+                continue;
+            }
+
+            if ($meta->hasKey($key)) {
+                $meta->set($key, $value);
+            }
+        }
+
+        $this->storage->storeProcess($config);
+        $config->clearAppliedChanges();
+        parent::onSuccess();
+    }
+
+    public function hasDeleteButton()
+    {
+        return $this->deleteButtonName !== null;
+    }
+
+    public function shouldBeDeleted()
+    {
+        if (! $this->hasDeleteButton()) {
+            return false;
+        }
+
+        $name = $this->deleteButtonName;
+        return $this->getSentValue($name) === $this->getElement($name)->getLabel();
+    }
+}
diff --git a/application/forms/BpUploadForm.php b/application/forms/BpUploadForm.php
new file mode 100644
index 0000000..a746740
--- /dev/null
+++ b/application/forms/BpUploadForm.php
@@ -0,0 +1,207 @@
+<?php
+
+namespace Icinga\Module\Businessprocess\Forms;
+
+use Exception;
+use Icinga\Module\Businessprocess\BpConfig;
+use Icinga\Module\Businessprocess\Storage\LegacyConfigParser;
+use Icinga\Module\Businessprocess\Web\Form\BpConfigBaseForm;
+use Icinga\Web\Notification;
+
+class BpUploadForm extends BpConfigBaseForm
+{
+    protected $node;
+
+    protected $objectList = array();
+
+    protected $processList = array();
+
+    protected $deleteButtonName;
+
+    private $sourceCode;
+
+    /** @var BpConfig */
+    private $uploadedConfig;
+
+    public function setup()
+    {
+        $this->showUpload();
+        if ($this->hasSource()) {
+            $this->showDetails();
+        }
+    }
+
+    protected function showDetails()
+    {
+        $this->addElement('text', 'name', array(
+            'label'       => $this->translate('Name'),
+            'required'    => true,
+            'description' => $this->translate(
+                'This is the unique identifier of this process'
+            ),
+            'validators' => array(
+                array(
+                    'validator' => 'StringLength',
+                    'options' => array(
+                        'min' => 2,
+                        'max' => 40
+                    )
+                ),
+                [
+                    'validator' => 'Regex',
+                    'options'   => [
+                        'pattern'   => '/^[a-zA-Z0-9](?:[\w\h._-]*)?\w$/',
+                        'messages'  => [
+                            'regexNotMatch' => $this->translate(
+                                'Id must only consist of alphanumeric characters.'
+                                . ' Underscore at the beginning and space, dot and hyphen at the beginning'
+                                . ' and end are not allowed.'
+                            )
+                        ]
+                    ]
+                ]
+            ),
+        ));
+
+        $this->addElement('textarea', 'source', array(
+            'label'       => $this->translate('Source'),
+            'description' => $this->translate(
+                'Business process source code'
+            ),
+            'value' => $this->sourceCode,
+            'class' => 'preformatted smaller',
+            'rows'  => 7,
+        ));
+
+        $this->getUploadedConfig();
+
+        $this->setSubmitLabel(
+            $this->translate('Store')
+        );
+    }
+
+    public function getUploadedConfig()
+    {
+        if ($this->uploadedConfig === null) {
+            $this->uploadedConfig = $this->parseSubmittedSourceCode();
+        }
+
+        return $this->uploadedConfig;
+    }
+
+    protected function parseSubmittedSourceCode()
+    {
+        $code = $this->getSentValue('source');
+        $name = $this->getSentValue('name', '<new config>');
+        if (empty($code)) {
+            $code = $this->sourceCode;
+        }
+
+        try {
+            $config = LegacyConfigParser::parseString($name, $code);
+
+            if ($config->hasErrors()) {
+                foreach ($config->getErrors() as $error) {
+                    $this->addError($error);
+                }
+            }
+        } catch (Exception $e) {
+            $this->addError($e->getMessage());
+            return null;
+        }
+
+        return $config;
+    }
+
+    protected function hasSource()
+    {
+        if ($this->hasBeenSent() && $source = $this->getSentValue('source')) {
+            $this->sourceCode = $source;
+        } else {
+            $this->processUploadedSource();
+        }
+
+        if (empty($this->sourceCode)) {
+            return false;
+        } else {
+            $this->removeElement('uploaded_file');
+            return true;
+        }
+    }
+
+    protected function showUpload()
+    {
+        $this->setAttrib('enctype', 'multipart/form-data');
+
+        $this->addElement('file', 'uploaded_file', array(
+            'label'       => $this->translate('File'),
+            'destination' => $this->getTempDir(),
+            'required'    => true,
+        ));
+
+        /** @var \Zend_Form_Element_File $el */
+        $el = $this->getElement('uploaded_file');
+        $el->setValueDisabled(true);
+
+        $this->setSubmitLabel(
+            $this->translate('Next')
+        );
+    }
+
+    protected function getTempDir()
+    {
+        return sys_get_temp_dir();
+    }
+
+    protected function processUploadedSource()
+    {
+        /** @var ?\Zend_Form_Element_File $el */
+        $el = $this->getElement('uploaded_file');
+
+        if ($el && $this->hasBeenSent()) {
+            $tmpdir = $this->getTempDir();
+            $tmpfile = tempnam($tmpdir, 'bpupload_');
+
+            // TODO: race condition, try to do this without unlinking here
+            unlink($tmpfile);
+
+            $el->addFilter('Rename', $tmpfile);
+            if ($el->receive()) {
+                $this->sourceCode = file_get_contents($tmpfile);
+                unlink($tmpfile);
+            } else {
+                foreach ($el->file->getMessages() as $error) {
+                    $this->addError($error);
+                }
+            }
+        }
+
+        return $this;
+    }
+
+    public function onSuccess()
+    {
+        $config = $this->getUploadedConfig();
+        $name = $config->getName();
+
+        if ($this->storage->hasProcess($name)) {
+            $this->addError(sprintf(
+                $this->translate('A process named "%s" already exists'),
+                $name
+            ));
+
+            return;
+        }
+
+        if (! $this->prepareMetadata($config)) {
+            return;
+        }
+
+        $this->storage->storeProcess($config);
+        Notification::success(sprintf('Process %s has been stored', $name));
+
+        $this->getSuccessUrl()->setParam('config', $name);
+
+        parent::onSuccess();
+    }
+}
diff --git a/application/forms/CleanupNodeForm.php b/application/forms/CleanupNodeForm.php
new file mode 100644
index 0000000..c6e5398
--- /dev/null
+++ b/application/forms/CleanupNodeForm.php
@@ -0,0 +1,61 @@
+<?php
+
+namespace Icinga\Module\Businessprocess\Forms;
+
+use Icinga\Module\Businessprocess\BpConfig;
+use Icinga\Module\Businessprocess\Modification\ProcessChanges;
+use Icinga\Module\Businessprocess\Web\Form\BpConfigBaseForm;
+use Icinga\Module\Monitoring\Backend\MonitoringBackend;
+use Icinga\Web\Session\SessionNamespace;
+use ipl\Html\Html;
+use ipl\Sql\Connection as IcingaDbConnection;
+
+class CleanupNodeForm extends BpConfigBaseForm
+{
+    /** @var MonitoringBackend|IcingaDbConnection */
+    protected $backend;
+
+    /** @var BpConfig */
+    protected $bp;
+
+    /** @var SessionNamespace */
+    protected $session;
+
+    public function setup()
+    {
+        $this->addHtml(Html::tag('h2', $this->translate('Cleanup missing nodes')));
+
+        $this->addElement('checkbox', 'cleanup_all', [
+            'class'         => 'autosubmit',
+            'label'         => $this->translate('Cleanup all missing nodes'),
+            'description'   => $this->translate('Remove all missing nodes from config')
+        ]);
+
+        if ($this->getSentValue('cleanup_all') !== '1') {
+            $this->addElement('multiselect', 'nodes', [
+                    'label'        => $this->translate('Select nodes to cleanup'),
+                    'required'     => true,
+                    'size'         => 8,
+                    'multiOptions' => $this->bp->getMissingChildren()
+            ]);
+        }
+    }
+
+    public function onSuccess()
+    {
+        $changes = ProcessChanges::construct($this->bp, $this->session);
+
+        $nodesToCleanup = $this->getValue('cleanup_all') === '1'
+            ? array_keys($this->bp->getMissingChildren())
+            : $this->getValue('nodes');
+
+        foreach ($nodesToCleanup as $nodeName) {
+            $node = $this->bp->getNode($nodeName);
+            $changes->deleteNode($node);
+        }
+
+        unset($changes);
+
+        parent::onSuccess();
+    }
+}
diff --git a/application/forms/DeleteNodeForm.php b/application/forms/DeleteNodeForm.php
new file mode 100644
index 0000000..dba0710
--- /dev/null
+++ b/application/forms/DeleteNodeForm.php
@@ -0,0 +1,125 @@
+<?php
+
+namespace Icinga\Module\Businessprocess\Forms;
+
+use Icinga\Module\Businessprocess\BpNode;
+use Icinga\Module\Businessprocess\Modification\ProcessChanges;
+use Icinga\Module\Businessprocess\Node;
+use Icinga\Module\Businessprocess\Web\Form\BpConfigBaseForm;
+use Icinga\Web\View;
+
+class DeleteNodeForm extends BpConfigBaseForm
+{
+    /** @var Node */
+    protected $node;
+
+    /** @var ?BpNode */
+    protected $parentNode;
+
+    public function setup()
+    {
+        $node = $this->node;
+        $nodeName = $node->getAlias() ?? $node->getName();
+
+        /** @var View $view */
+        $view = $this->getView();
+        $this->addHtml(
+            '<h2>' . $view->escape(
+                sprintf($this->translate('Delete "%s"'), $nodeName)
+            ) . '</h2>'
+        );
+
+        $biLink = $view->qlink(
+            $nodeName,
+            'businessprocess/node/impact',
+            array('name' => $node->getName()),
+            array('data-base-target' => '_next')
+        );
+        $this->addHtml(
+            '<p>' . sprintf(
+                $view->escape(
+                    $this->translate('Unsure? Show business impact of "%s"')
+                ),
+                $biLink
+            ) . '</p>'
+        );
+
+        if ($this->parentNode) {
+            $yesMsg = sprintf(
+                $this->translate('Delete from %s'),
+                $this->parentNode->getAlias()
+            );
+        } else {
+            $yesMsg = sprintf(
+                $this->translate('Delete root node "%s"'),
+                $nodeName
+            );
+        }
+
+        $this->addElement('select', 'confirm', array(
+            'label'        => $this->translate('Are you sure?'),
+            'required'     => true,
+            'description'  => $this->translate(
+                'Do you really want to delete this node?'
+            ),
+            'multiOptions' => $this->optionalEnum(array(
+                'no'  => $this->translate('No'),
+                'yes' => $yesMsg,
+                'all' => sprintf($this->translate('Delete all occurrences of %s'), $nodeName),
+            ))
+        ));
+    }
+
+    /**
+     * @param Node $node
+     * @return $this
+     */
+    public function setNode(Node $node)
+    {
+        $this->node = $node;
+        return $this;
+    }
+
+    /**
+     * @param BpNode|null $node
+     * @return $this
+     */
+    public function setParentNode(BpNode $node = null)
+    {
+        $this->parentNode = $node;
+        return $this;
+    }
+
+    public function onSuccess()
+    {
+        $changes = ProcessChanges::construct($this->bp, $this->session);
+
+        $confirm = $this->getValue('confirm');
+        switch ($confirm) {
+            case 'yes':
+                $changes->deleteNode($this->node, $this->parentNode === null ? null : $this->parentNode->getName());
+                break;
+            case 'all':
+                $changes->deleteNode($this->node);
+                break;
+            case 'no':
+                $this->setSuccessMessage($this->translate('Well, maybe next time'));
+        }
+
+        switch ($confirm) {
+            case 'yes':
+            case 'all':
+                if ($this->successUrl === null) {
+                    $this->successUrl = clone $this->getRequest()->getUrl();
+                }
+
+                $this->successUrl->getParams()->remove(array('action', 'deletenode'));
+        }
+
+        // Trigger session desctruction to make sure it get's stored.
+        // TODO: figure out why this is necessary, might be an unclean shutdown on redirect
+        unset($changes);
+
+        parent::onSuccess();
+    }
+}
diff --git a/application/forms/EditNodeForm.php b/application/forms/EditNodeForm.php
new file mode 100644
index 0000000..bd1592b
--- /dev/null
+++ b/application/forms/EditNodeForm.php
@@ -0,0 +1,315 @@
+<?php
+
+namespace Icinga\Module\Businessprocess\Forms;
+
+use Icinga\Module\Businessprocess\BpConfig;
+use Icinga\Module\Businessprocess\BpNode;
+use Icinga\Module\Businessprocess\Modification\ProcessChanges;
+use Icinga\Module\Businessprocess\Node;
+use Icinga\Module\Businessprocess\ServiceNode;
+use Icinga\Module\Businessprocess\Web\Form\Element\IplStateOverrides;
+use Icinga\Module\Businessprocess\Web\Form\Validator\HostServiceTermValidator;
+use Icinga\Module\Monitoring\Backend\MonitoringBackend;
+use Icinga\Web\Session\SessionNamespace;
+use ipl\Html\Attributes;
+use ipl\Html\FormattedString;
+use ipl\Html\HtmlElement;
+use ipl\Html\ValidHtml;
+use ipl\I18n\Translation;
+use ipl\Web\Compat\CompatForm;
+use ipl\Web\FormElement\TermInput\ValidatedTerm;
+use ipl\Web\Url;
+
+class EditNodeForm extends CompatForm
+{
+    use Translation;
+
+    /** @var ?BpConfig */
+    protected $bp;
+
+    /** @var ?Node */
+    protected $node;
+
+    /** @var ?BpNode */
+    protected $parent;
+
+    /** @var SessionNamespace */
+    protected $session;
+
+    /**
+     * Set the affected configuration
+     *
+     * @param BpConfig $bp
+     *
+     * @return $this
+     */
+    public function setProcess(BpConfig $bp): self
+    {
+        $this->bp = $bp;
+
+        return $this;
+    }
+
+    /**
+     * Set the affected node
+     *
+     * @param Node $node
+     *
+     * @return $this
+     */
+    public function setNode(Node $node): self
+    {
+        $this->node = $node;
+
+        $this->populate([
+            'node-search' => $node->getName(),
+            'node-label' => $node->getAlias()
+        ]);
+
+        return $this;
+    }
+
+    /**
+     * Set the affected sub-process
+     *
+     * @param ?BpNode $node
+     *
+     * @return $this
+     */
+    public function setParentNode(BpNode $node = null): self
+    {
+        $this->parent = $node;
+
+        if ($this->node !== null) {
+            $stateOverrides = $this->parent->getStateOverrides($this->node->getName());
+            if (! empty($stateOverrides)) {
+                $this->populate([
+                    'overrideStates' => 'y',
+                    'stateOverrides' => $stateOverrides
+                ]);
+            }
+        }
+
+        return $this;
+    }
+
+    /**
+     * Set the user's session
+     *
+     * @param SessionNamespace $session
+     *
+     * @return $this
+     */
+    public function setSession(SessionNamespace $session): self
+    {
+        $this->session = $session;
+
+        return $this;
+    }
+
+    /**
+     * Identify and return the node the user has chosen
+     *
+     * @return Node
+     */
+    protected function identifyChosenNode(): Node
+    {
+        $userInput = $this->getPopulatedValue('node');
+        $nodeName = $this->getPopulatedValue('node-search');
+        $nodeLabel = $this->getPopulatedValue('node-label');
+
+        if ($nodeName && $userInput === $nodeLabel) {
+            // User accepted a suggestion and didn't change it manually
+            $node = $this->bp->getNode($nodeName);
+        } elseif ($userInput && (! $nodeLabel || $userInput !== $nodeLabel)) {
+            // User didn't choose a suggestion or changed it manually
+            $node = $this->bp->getNode(BpConfig::joinNodeName($userInput, 'Hoststatus'));
+        } else {
+            // If the search and user input are both empty, it can only be the initial value
+            $node = $this->node;
+        }
+
+        return $node;
+    }
+
+    protected function assemble()
+    {
+        $this->addHtml(new HtmlElement('h2', null, FormattedString::create(
+            $this->translate('Modify "%s"'),
+            $this->node->getAlias() ?? $this->node->getName()
+        )));
+
+        if ($this->node instanceof ServiceNode) {
+            $this->assembleServiceElements();
+        } else {
+            $this->assembleHostElements();
+        }
+
+        $this->addElement('submit', 'btn_submit', [
+            'label' => $this->translate('Save Changes')
+        ]);
+    }
+
+    protected function assembleServiceElements(): void
+    {
+        if ($this->bp->getBackend() instanceof MonitoringBackend) {
+            $suggestionsPath = 'businessprocess/suggestions/monitoring-service';
+        } else {
+            $suggestionsPath = 'businessprocess/suggestions/icingadb-service';
+        }
+
+        $node = $this->identifyChosenNode();
+
+        $this->addHtml($this->createSearchInput(
+            $this->translate('Service'),
+            $node->getAlias() ?? $node->getName(),
+            $suggestionsPath
+        ));
+
+        $this->addElement('checkbox', 'overrideStates', [
+            'ignore' => true,
+            'class' => 'autosubmit',
+            'label' => $this->translate('Override Service State')
+        ]);
+        if ($this->getPopulatedValue('overrideStates') === 'y') {
+            $this->addElement(new IplStateOverrides('stateOverrides', [
+                'label' => $this->translate('State Overrides'),
+                'options' => [
+                    0 => $this->translate('OK'),
+                    1 => $this->translate('WARNING'),
+                    2 => $this->translate('CRITICAL'),
+                    3 => $this->translate('UNKNOWN'),
+                    99 => $this->translate('PENDING'),
+                ]
+            ]));
+        }
+    }
+
+    protected function assembleHostElements(): void
+    {
+        if ($this->bp->getBackend() instanceof MonitoringBackend) {
+            $suggestionsPath = 'businessprocess/suggestions/monitoring-host';
+        } else {
+            $suggestionsPath = 'businessprocess/suggestions/icingadb-host';
+        }
+
+        $node = $this->identifyChosenNode();
+
+        $this->addHtml($this->createSearchInput(
+            $this->translate('Host'),
+            $node->getAlias() ?? $node->getName(),
+            $suggestionsPath
+        ));
+
+        $this->addElement('checkbox', 'overrideStates', [
+            'ignore' => true,
+            'class' => 'autosubmit',
+            'label' => $this->translate('Override Host State')
+        ]);
+        if ($this->getPopulatedValue('overrideStates') === 'y') {
+            $this->addElement(new IplStateOverrides('stateOverrides', [
+                'label' => $this->translate('State Overrides'),
+                'options' => [
+                    0 => $this->translate('UP'),
+                    1 => $this->translate('DOWN'),
+                    99 => $this->translate('PENDING')
+                ]
+            ]));
+        }
+    }
+
+    protected function createSearchInput(string $label, string $value, string $suggestionsPath): ValidHtml
+    {
+        $userInput = $this->createElement('text', 'node', [
+            'ignore' => true,
+            'required' => true,
+            'autocomplete' => 'off',
+            'label' => $label,
+            'value' => $value,
+            'data-enrichment-type' => 'completion',
+            'data-term-suggestions' => '#node-suggestions',
+            'data-suggest-url' => Url::fromPath($suggestionsPath, [
+                'node' => isset($this->parent) ? $this->parent->getName() : null,
+                'config' => $this->bp->getName(),
+                'showCompact' => true,
+                '_disableLayout' => true
+            ]),
+            'validators' => ['callback' => function ($_, $validator) {
+                $newName = $this->identifyChosenNode()->getName();
+                if ($newName === $this->node->getName()) {
+                    return true;
+                }
+
+                $term = new ValidatedTerm($newName);
+
+                (new HostServiceTermValidator())
+                    ->setParent($this->parent)
+                    ->isValid($term);
+
+                if (! $term->isValid()) {
+                    $validator->addMessage($term->getMessage());
+                    return false;
+                }
+
+                return true;
+            }]
+        ]);
+
+        $fieldset = new HtmlElement('fieldset');
+
+        $searchInput = $this->createElement('hidden', 'node-search', ['ignore' => true]);
+        $this->registerElement($searchInput);
+        $fieldset->addHtml($searchInput);
+
+        $labelInput = $this->createElement('hidden', 'node-label', ['ignore' => true]);
+        $this->registerElement($labelInput);
+        $fieldset->addHtml($labelInput);
+
+        $this->registerElement($userInput);
+        $this->decorate($userInput);
+
+        $fieldset->addHtml(
+            $userInput,
+            new HtmlElement('div', Attributes::create([
+                'id' => 'node-suggestions',
+                'class' => 'search-suggestions'
+            ]))
+        );
+
+        return $fieldset;
+    }
+
+    protected function onSuccess()
+    {
+        $changes = ProcessChanges::construct($this->bp, $this->session);
+
+        $children = $this->parent->getChildNames();
+        $previousPos = array_search($this->node->getName(), $children, true);
+        $node = $this->identifyChosenNode();
+        $nodeName = $node->getName();
+
+        $changes->deleteNode($this->node, $this->parent->getName());
+        $changes->addChildrenToNode([$nodeName], $this->parent);
+
+        $stateOverrides = $this->getValue('stateOverrides');
+        if (! empty($stateOverrides)) {
+            $changes->modifyNode($this->parent, [
+                'stateOverrides' => array_merge($this->parent->getStateOverrides(), [
+                    $nodeName => $stateOverrides
+                ])
+            ]);
+        }
+
+        if ($this->bp->getMetadata()->isManuallyOrdered() && ($newPos = count($children) - 1) > $previousPos) {
+            $changes->moveNode(
+                $node,
+                $newPos,
+                $previousPos,
+                $this->parent->getName(),
+                $this->parent->getName()
+            );
+        }
+
+        unset($changes);
+    }
+}
diff --git a/application/forms/MoveNodeForm.php b/application/forms/MoveNodeForm.php
new file mode 100644
index 0000000..81d15c7
--- /dev/null
+++ b/application/forms/MoveNodeForm.php
@@ -0,0 +1,172 @@
+<?php
+
+namespace Icinga\Module\Businessprocess\Forms;
+
+use Icinga\Application\Icinga;
+use Icinga\Application\Web;
+use Icinga\Exception\Http\HttpException;
+use Icinga\Module\Businessprocess\BpConfig;
+use Icinga\Module\Businessprocess\BpNode;
+use Icinga\Module\Businessprocess\Exception\ModificationError;
+use Icinga\Module\Businessprocess\Modification\ProcessChanges;
+use Icinga\Module\Businessprocess\Node;
+use Icinga\Module\Businessprocess\Web\Form\BpConfigBaseForm;
+use Icinga\Module\Businessprocess\Web\Form\CsrfToken;
+use Icinga\Web\Session;
+use Icinga\Web\Session\SessionNamespace;
+
+class MoveNodeForm extends BpConfigBaseForm
+{
+    /** @var BpConfig */
+    protected $bp;
+
+    /** @var Node */
+    protected $node;
+
+    /** @var BpNode */
+    protected $parentNode;
+
+    /** @var SessionNamespace */
+    protected $session;
+
+    public function __construct($options = null)
+    {
+        parent::__construct($options);
+
+        // Zend's plugin loader reverses the order of added prefix paths thus trying our paths first before trying
+        // Zend paths
+        $this->addPrefixPaths(array(
+            array(
+                'prefix'    => 'Icinga\\Web\\Form\\Element\\',
+                'path'      => Icinga::app()->getLibraryDir('Icinga/Web/Form/Element'),
+                'type'      => static::ELEMENT
+            ),
+            array(
+                'prefix'    => 'Icinga\\Web\\Form\\Decorator\\',
+                'path'      => Icinga::app()->getLibraryDir('Icinga/Web/Form/Decorator'),
+                'type'      => static::DECORATOR
+            )
+        ));
+    }
+
+    public function setup()
+    {
+        $this->addElement(
+            'text',
+            'parent',
+            [
+                'allowEmpty'    => true,
+                'filters'       => ['Null'],
+                'validators'    => [
+                    ['Callback', true, [
+                        'callback'  => function ($name) {
+                            return empty($name) || $this->bp->hasBpNode($name);
+                        },
+                        'messages'  => [
+                            'callbackValue' => $this->translate('No process found with name %value%')
+                        ]
+                    ]]
+                ]
+            ]
+        );
+        $this->addElement(
+            'number',
+            'from',
+            [
+                'required'  => true,
+                'min'       => 0
+            ]
+        );
+        $this->addElement(
+            'number',
+            'to',
+            [
+                'required'  => true,
+                'min'       => 0
+            ]
+        );
+        $this->addElement(
+            'hidden',
+            'csrfToken',
+            [
+                'required'  => true
+            ]
+        );
+
+        $this->setSubmitLabel('movenode');
+    }
+
+    /**
+     * @param Node $node
+     * @return $this
+     */
+    public function setNode(Node $node)
+    {
+        $this->node = $node;
+        return $this;
+    }
+
+    /**
+     * @param BpNode|null $node
+     * @return $this
+     */
+    public function setParentNode(BpNode $node = null)
+    {
+        $this->parentNode = $node;
+        return $this;
+    }
+
+    public function onSuccess()
+    {
+        if (! CsrfToken::isValid($this->getValue('csrfToken'))) {
+            throw new HttpException(403, 'nope');
+        }
+
+        $changes = ProcessChanges::construct($this->bp, $this->session);
+        if (! $this->bp->getMetadata()->isManuallyOrdered()) {
+            $changes->applyManualOrder();
+        }
+
+        try {
+            $changes->moveNode(
+                $this->node,
+                $this->getValue('from'),
+                $this->getValue('to'),
+                $this->getValue('parent'),
+                $this->parentNode !== null ? $this->parentNode->getName() : null
+            );
+        } catch (ModificationError $e) {
+            $this->notifyError($e->getMessage());
+            /** @var Web $app */
+            $app = Icinga::app();
+            $app->getResponse()
+                // Web 2's JS forces a content update for non-200s. Our own JS
+                // can't prevent this, hence we're not making this a 400 :(
+                //->setHttpResponseCode(400)
+                ->setHeader('X-Icinga-Container', 'ignore')
+                ->sendResponse();
+            exit;
+        }
+
+        // Trigger session destruction to make sure it get's stored.
+        unset($changes);
+
+        $this->notifySuccess($this->getSuccessMessage($this->translate('Node order updated')));
+
+        $response = $this->getRequest()->getResponse()
+            ->setHeader('X-Icinga-Container', 'ignore')
+            ->setHeader('X-Icinga-Extra-Updates', implode(';', [
+                $this->getRequest()->getHeader('X-Icinga-Container'),
+                $this->getSuccessUrl()->getAbsoluteUrl()
+            ]));
+
+        Session::getSession()->write();
+        $response->sendResponse();
+        exit;
+    }
+
+    public function hasBeenSent()
+    {
+        return true; // This form has no id
+    }
+}
diff --git a/application/forms/ProcessForm.php b/application/forms/ProcessForm.php
new file mode 100644
index 0000000..126fe9b
--- /dev/null
+++ b/application/forms/ProcessForm.php
@@ -0,0 +1,158 @@
+<?php
+
+namespace Icinga\Module\Businessprocess\Forms;
+
+use Icinga\Module\Businessprocess\BpNode;
+use Icinga\Module\Businessprocess\Modification\ProcessChanges;
+use Icinga\Module\Businessprocess\Node;
+use Icinga\Module\Businessprocess\Web\Form\BpConfigBaseForm;
+use Icinga\Web\Notification;
+use Icinga\Web\View;
+
+class ProcessForm extends BpConfigBaseForm
+{
+    /** @var BpNode */
+    protected $node;
+
+    public function setup()
+    {
+        if ($this->node !== null) {
+            /** @var View $view */
+            $view = $this->getView();
+
+            $this->addHtml(
+                '<h2>' . $view->escape(
+                    sprintf($this->translate('Modify "%s"'), $this->node->getAlias())
+                ) . '</h2>'
+            );
+        }
+
+        $this->addElement('text', 'name', [
+            'label'         => $this->translate('ID'),
+            'value'         => (string) $this->node,
+            'required'      => true,
+            'readonly'      => $this->node ? true : null,
+            'description'   => $this->translate('This is the unique identifier of this process')
+        ]);
+
+        $this->addElement('text', 'alias', array(
+            'label'        => $this->translate('Display Name'),
+            'description' => $this->translate(
+                'Usually this name will be shown for this node. Equals ID'
+                . ' if not given'
+            ),
+        ));
+
+        $this->addElement('select', 'operator', array(
+            'label'        => $this->translate('Operator'),
+            'required'     => true,
+            'multiOptions' => Node::getOperators()
+        ));
+
+        if ($this->node !== null) {
+            $display = $this->node->getDisplay() ?: 1;
+        } else {
+            $display = 1;
+        }
+        $this->addElement('select', 'display', array(
+            'label'        => $this->translate('Visualization'),
+            'required'     => true,
+            'description'  => $this->translate(
+                'Where to show this process'
+            ),
+            'multiOptions' => array(
+                "$display" => $this->translate('Toplevel Process'),
+                '0' => $this->translate('Subprocess only'),
+            )
+        ));
+
+        $this->addElement('text', 'url', array(
+            'label'        => $this->translate('Info URL'),
+            'description' => $this->translate(
+                'URL pointing to more information about this node'
+            )
+        ));
+
+        if ($node = $this->node) {
+            if ($node->hasAlias()) {
+                $this->getElement('alias')->setValue($node->getAlias());
+            }
+            $this->getElement('operator')->setValue($node->getOperator());
+            $this->getElement('display')->setValue($node->getDisplay());
+            if ($node->hasInfoUrl()) {
+                $this->getElement('url')->setValue($node->getInfoUrl());
+            }
+        }
+    }
+
+    /**
+     * @param BpNode $node
+     * @return $this
+     */
+    public function setNode(BpNode $node)
+    {
+        $this->node = $node;
+        return $this;
+    }
+
+    public function onSuccess()
+    {
+        $changes = ProcessChanges::construct($this->bp, $this->session);
+
+        $modifications = array();
+        $alias    = $this->getValue('alias');
+        $operator = $this->getValue('operator');
+        $display  = $this->getValue('display');
+        $url      = $this->getValue('url');
+        if (empty($url)) {
+            $url = null;
+        }
+        if (empty($alias)) {
+            $alias = null;
+        }
+        // TODO: rename
+
+        if ($node = $this->node) {
+            if ($display !== $node->getDisplay()) {
+                $modifications['display'] = $display;
+            }
+            if ($operator !== $node->getOperator()) {
+                $modifications['operator'] = $operator;
+            }
+            if ($url !== $node->getInfoUrl()) {
+                $modifications['infoUrl'] = $url;
+            }
+            if ($alias !== $node->getAlias()) {
+                $modifications['alias'] = $alias;
+            }
+        } else {
+            $modifications = array(
+                'display'    => $display,
+                'operator'   => $operator,
+                'infoUrl'    => $url,
+                'alias'      => $alias,
+            );
+        }
+
+        if (! empty($modifications)) {
+            if ($this->node === null) {
+                $changes->createNode($this->getValue('name'), $modifications);
+            } else {
+                $changes->modifyNode($this->node, $modifications);
+            }
+
+            Notification::success(
+                sprintf(
+                    'Process %s has been modified',
+                    $this->bp->getName()
+                )
+            );
+        }
+
+        // Trigger session destruction to make sure it get's stored.
+        // TODO: figure out why this is necessary, might be an unclean shutdown on redirect
+        unset($changes);
+
+        parent::onSuccess();
+    }
+}
diff --git a/application/forms/SimulationForm.php b/application/forms/SimulationForm.php
new file mode 100644
index 0000000..04a0f56
--- /dev/null
+++ b/application/forms/SimulationForm.php
@@ -0,0 +1,138 @@
+<?php
+
+namespace Icinga\Module\Businessprocess\Forms;
+
+use Icinga\Module\Businessprocess\MonitoredNode;
+use Icinga\Module\Businessprocess\Simulation;
+use Icinga\Module\Businessprocess\Web\Form\BpConfigBaseForm;
+use Icinga\Web\View;
+
+class SimulationForm extends BpConfigBaseForm
+{
+    /** @var MonitoredNode */
+    protected $node;
+
+    /** @var ?MonitoredNode */
+    protected $simulatedNode;
+
+    /** @var Simulation */
+    protected $simulation;
+
+    public function setup()
+    {
+        $states = $this->enumStateNames();
+
+        // TODO: Fetch state from object
+        if ($this->simulatedNode) {
+            $simulatedState = $this->simulatedNode->getState();
+            $states[$simulatedState] = sprintf(
+                '%s (%s)',
+                $this->node->getStateName($simulatedState),
+                $this->translate('Current simulation')
+            );
+            $node = $this->simulatedNode;
+            $hasSimulation = true;
+        } else {
+            $hasSimulation = false;
+            $node = $this->node;
+        }
+
+        /** @var View $view */
+        $view = $this->getView();
+        if ($hasSimulation) {
+            $title = $this->translate('Modify simulation for %s');
+        } else {
+            $title = $this->translate('Add simulation for %s');
+        }
+        $this->addHtml(
+            '<h2>'
+            . $view->escape(sprintf($title, $node->getAlias() ?? $node->getName()))
+            . '</h2>'
+        );
+
+        $this->addElement('select', 'state', array(
+            'label'        => $this->translate('State'),
+            'multiOptions' => $states,
+            'class'        => 'autosubmit',
+            'value'        => $this->simulatedNode ? $node->getState() : null,
+        ));
+
+        $sentState = $this->getSentValue('state');
+        if (in_array($sentState, array('0', '99'))) {
+            return;
+        }
+
+        if ($hasSimulation || ($sentState !== null && ctype_digit($sentState))) {
+            $this->addElement('checkbox', 'acknowledged', array(
+                'label' => $this->translate('Acknowledged'),
+                'value' => $node->isAcknowledged(),
+            ));
+
+            $this->addElement('checkbox', 'in_downtime', array(
+                'label' => $this->translate('In downtime'),
+                'value' => $node->isInDowntime(),
+            ));
+        }
+
+        $this->setSubmitLabel($this->translate('Apply'));
+    }
+
+    public function setNode($node)
+    {
+        $this->node = $node;
+        return $this;
+    }
+
+    public function setSimulation(Simulation $simulation)
+    {
+        $this->simulation = $simulation;
+
+        $name = $this->node->getName();
+        if ($simulation->hasNode($name)) {
+            $this->simulatedNode = clone($this->node);
+            $s = $simulation->getNode($name);
+            $this->simulatedNode->setState($s->state)
+                ->setAck($s->acknowledged)
+                ->setDowntime($s->in_downtime)
+                ->setMissing(false);
+        }
+
+        return $this;
+    }
+
+    public function onSuccess()
+    {
+        $nodeName = $this->node->getName();
+        $state = $this->getValue('state');
+
+        if ($state !== null && ctype_digit($state)) {
+            $this->notifySuccess($this->translate('Simulation has been set'));
+            $this->simulation->set($nodeName, (object) array(
+                'state'        => $this->getValue('state'),
+                'acknowledged' => $this->getValue('acknowledged'),
+                'in_downtime'  => $this->getValue('in_downtime'),
+            ));
+        } else {
+            if ($this->simulation->remove($nodeName)) {
+                $this->notifySuccess($this->translate('Simulation has been removed'));
+            }
+        }
+
+        parent::onSuccess();
+    }
+
+    /**
+     * @return array
+     */
+    protected function enumStateNames()
+    {
+        $states = array(
+            null => sprintf(
+                $this->translate('Use current state (%s)'),
+                $this->translate($this->node->getStateName())
+            )
+        ) + $this->node->enumStateNames();
+
+        return $states;
+    }
+}