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-rw-r--r--modules/setup/library/Setup/Requirement.php343
-rw-r--r--modules/setup/library/Setup/Requirement/ClassRequirement.php48
-rw-r--r--modules/setup/library/Setup/Requirement/ConfigDirectoryRequirement.php42
-rw-r--r--modules/setup/library/Setup/Requirement/OSRequirement.php27
-rw-r--r--modules/setup/library/Setup/Requirement/PhpConfigRequirement.php22
-rw-r--r--modules/setup/library/Setup/Requirement/PhpModuleRequirement.php42
-rw-r--r--modules/setup/library/Setup/Requirement/PhpVersionRequirement.php28
-rw-r--r--modules/setup/library/Setup/Requirement/SetRequirement.php34
-rw-r--r--modules/setup/library/Setup/Requirement/WebLibraryRequirement.php24
-rw-r--r--modules/setup/library/Setup/Requirement/WebModuleRequirement.php31
-rw-r--r--modules/setup/library/Setup/RequirementSet.php335
-rw-r--r--modules/setup/library/Setup/RequirementsRenderer.php64
12 files changed, 1040 insertions, 0 deletions
diff --git a/modules/setup/library/Setup/Requirement.php b/modules/setup/library/Setup/Requirement.php
new file mode 100644
index 0000000..fd16405
--- /dev/null
+++ b/modules/setup/library/Setup/Requirement.php
@@ -0,0 +1,343 @@
+<?php
+/* Icinga Web 2 | (c) 2015 Icinga Development Team | GPLv2+ */
+
+namespace Icinga\Module\Setup;
+
+use LogicException;
+
+abstract class Requirement
+{
+ /**
+ * The state of this requirement
+ *
+ * @var bool
+ */
+ protected $state;
+
+ /**
+ * A descriptive text representing the current state of this requirement
+ *
+ * @var string
+ */
+ protected $stateText;
+
+ /**
+ * The descriptions of this requirement
+ *
+ * @var array
+ */
+ protected $descriptions;
+
+ /**
+ * The title of this requirement
+ *
+ * @var string
+ */
+ protected $title;
+
+ /**
+ * The condition of this requirement
+ *
+ * @var mixed
+ */
+ protected $condition;
+
+ /**
+ * Whether this requirement is optional
+ *
+ * @var bool
+ */
+ protected $optional;
+
+ /**
+ * The alias to display the condition with in a human readable way
+ *
+ * @var string
+ */
+ protected $alias;
+
+ /**
+ * The text to display if the given requirement is fulfilled
+ *
+ * @var string
+ */
+ protected $textAvailable;
+
+ /**
+ * The text to display if the given requirement is not fulfilled
+ *
+ * @var string
+ */
+ protected $textMissing;
+
+ /**
+ * Create a new requirement
+ *
+ * @param array $options
+ *
+ * @throws LogicException In case there exists no setter for an option's key
+ */
+ public function __construct(array $options = array())
+ {
+ $this->optional = false;
+ $this->descriptions = array();
+
+ foreach ($options as $key => $value) {
+ $setMethod = 'set' . ucfirst($key);
+ $addMethod = 'add' . ucfirst($key);
+ if (method_exists($this, $setMethod)) {
+ $this->$setMethod($value);
+ } elseif (method_exists($this, $addMethod)) {
+ $this->$addMethod($value);
+ } else {
+ throw LogicException('No setter found for option key: ' . $key);
+ }
+ }
+ }
+
+ /**
+ * Set the state of this requirement
+ *
+ * @param bool $state
+ *
+ * @return Requirement
+ */
+ public function setState($state)
+ {
+ $this->state = (bool) $state;
+ return $this;
+ }
+
+ /**
+ * Return the state of this requirement
+ *
+ * Evaluates the requirement in case there is no state set yet.
+ *
+ * @return int
+ */
+ public function getState()
+ {
+ if ($this->state === null) {
+ $this->state = $this->evaluate();
+ }
+
+ return $this->state;
+ }
+
+ /**
+ * Set a descriptive text for this requirement's current state
+ *
+ * @param string $text
+ *
+ * @return Requirement
+ */
+ public function setStateText($text)
+ {
+ $this->stateText = $text;
+ return $this;
+ }
+
+ /**
+ * Return a descriptive text for this requirement's current state
+ *
+ * @return string
+ */
+ public function getStateText()
+ {
+ $state = $this->getState();
+ if ($this->stateText === null) {
+ return $state ? $this->getTextAvailable() : $this->getTextMissing();
+ }
+ return $this->stateText;
+ }
+
+ /**
+ * Add a description for this requirement
+ *
+ * @param string $description
+ *
+ * @return Requirement
+ */
+ public function addDescription($description)
+ {
+ $this->descriptions[] = $description;
+ return $this;
+ }
+
+ /**
+ * Return the descriptions of this wizard
+ *
+ * @return array
+ */
+ public function getDescriptions()
+ {
+ return $this->descriptions;
+ }
+
+ /**
+ * Set the title for this requirement
+ *
+ * @param string $title
+ *
+ * @return Requirement
+ */
+ public function setTitle($title)
+ {
+ $this->title = $title;
+ return $this;
+ }
+
+ /**
+ * Return the title of this requirement
+ *
+ * In case there is no title set the alias is returned instead.
+ *
+ * @return string
+ */
+ public function getTitle()
+ {
+ if ($this->title === null) {
+ return $this->getAlias();
+ }
+
+ return $this->title;
+ }
+
+ /**
+ * Set the condition for this requirement
+ *
+ * @param mixed $condition
+ *
+ * @return Requirement
+ */
+ public function setCondition($condition)
+ {
+ $this->condition = $condition;
+ return $this;
+ }
+
+ /**
+ * Return the condition of this requirement
+ *
+ * @return mixed
+ */
+ public function getCondition()
+ {
+ return $this->condition;
+ }
+
+ /**
+ * Set whether this requirement is optional
+ *
+ * @param bool $state
+ *
+ * @return Requirement
+ */
+ public function setOptional($state = true)
+ {
+ $this->optional = (bool) $state;
+ return $this;
+ }
+
+ /**
+ * Return whether this requirement is optional
+ *
+ * @return bool
+ */
+ public function isOptional()
+ {
+ return $this->optional;
+ }
+
+ /**
+ * Set the alias to display the condition with in a human readable way
+ *
+ * @param string $alias
+ *
+ * @return Requirement
+ */
+ public function setAlias($alias)
+ {
+ $this->alias = $alias;
+ return $this;
+ }
+
+ /**
+ * Return the alias to display the condition with in a human readable way
+ *
+ * @return string
+ */
+ public function getAlias()
+ {
+ return $this->alias;
+ }
+
+ /**
+ * Set the text to display if the given requirement is fulfilled
+ *
+ * @param string $textAvailable
+ *
+ * @return Requirement
+ */
+ public function setTextAvailable($textAvailable)
+ {
+ $this->textAvailable = $textAvailable;
+ return $this;
+ }
+
+ /**
+ * Get the text to display if the given requirement is fulfilled
+ *
+ * @return string
+ */
+ public function getTextAvailable()
+ {
+ return $this->textAvailable;
+ }
+
+ /**
+ * Set the text to display if the given requirement is not fulfilled
+ *
+ * @param string $textMissing
+ *
+ * @return Requirement
+ */
+ public function setTextMissing($textMissing)
+ {
+ $this->textMissing = $textMissing;
+ return $this;
+ }
+
+ /**
+ * Get the text to display if the given requirement is not fulfilled
+ *
+ * @return string
+ */
+ public function getTextMissing()
+ {
+ return $this->textMissing;
+ }
+
+ /**
+ * Evaluate this requirement and return whether it is fulfilled
+ *
+ * @return bool
+ */
+ abstract protected function evaluate();
+
+ /**
+ * Return whether the given requirement equals this one
+ *
+ * @param Requirement $requirement
+ *
+ * @return bool
+ */
+ public function equals(Requirement $requirement)
+ {
+ if ($requirement instanceof static) {
+ return $this->getCondition() === $requirement->getCondition();
+ }
+
+ return false;
+ }
+}
diff --git a/modules/setup/library/Setup/Requirement/ClassRequirement.php b/modules/setup/library/Setup/Requirement/ClassRequirement.php
new file mode 100644
index 0000000..d884c31
--- /dev/null
+++ b/modules/setup/library/Setup/Requirement/ClassRequirement.php
@@ -0,0 +1,48 @@
+<?php
+/* Icinga Web 2 | (c) 2015 Icinga Development Team | GPLv2+ */
+
+namespace Icinga\Module\Setup\Requirement;
+
+use Icinga\Application\Platform;
+use Icinga\Module\Setup\Requirement;
+
+class ClassRequirement extends Requirement
+{
+ protected function evaluate()
+ {
+ return Platform::classExists($this->getCondition());
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getStateText()
+ {
+ $stateText = parent::getStateText();
+ if ($stateText === null) {
+ $alias = $this->getAlias();
+ if ($this->getState()) {
+ $stateText = $alias === null
+ ? sprintf(
+ mt('setup', 'The %s class is available.', 'setup.requirement.class'),
+ $this->getCondition()
+ )
+ : sprintf(
+ mt('setup', 'The %s is available.', 'setup.requirement.class'),
+ $alias
+ );
+ } else {
+ $stateText = $alias === null
+ ? sprintf(
+ mt('setup', 'The %s class is missing.', 'setup.requirement.class'),
+ $this->getCondition()
+ )
+ : sprintf(
+ mt('setup', 'The %s is missing.', 'setup.requirement.class'),
+ $alias
+ );
+ }
+ }
+ return $stateText;
+ }
+}
diff --git a/modules/setup/library/Setup/Requirement/ConfigDirectoryRequirement.php b/modules/setup/library/Setup/Requirement/ConfigDirectoryRequirement.php
new file mode 100644
index 0000000..7e9044c
--- /dev/null
+++ b/modules/setup/library/Setup/Requirement/ConfigDirectoryRequirement.php
@@ -0,0 +1,42 @@
+<?php
+/* Icinga Web 2 | (c) 2015 Icinga Development Team | GPLv2+ */
+
+namespace Icinga\Module\Setup\Requirement;
+
+use Icinga\Module\Setup\Requirement;
+
+class ConfigDirectoryRequirement extends Requirement
+{
+ public function getTitle()
+ {
+ $title = parent::getTitle();
+ if ($title === null) {
+ return mt('setup', 'Read- and writable configuration directory');
+ }
+
+ return $title;
+ }
+
+ protected function evaluate()
+ {
+ $path = $this->getCondition();
+ if (file_exists($path)) {
+ $readable = is_readable($path);
+ if ($readable && is_writable($path)) {
+ $this->setStateText(sprintf(mt('setup', 'The directory %s is read- and writable.'), $path));
+ return true;
+ } else {
+ $this->setStateText(sprintf(
+ $readable
+ ? mt('setup', 'The directory %s is not writable.')
+ : mt('setup', 'The directory %s is not readable.'),
+ $path
+ ));
+ return false;
+ }
+ } else {
+ $this->setStateText(sprintf(mt('setup', 'The directory %s does not exist.'), $path));
+ return false;
+ }
+ }
+}
diff --git a/modules/setup/library/Setup/Requirement/OSRequirement.php b/modules/setup/library/Setup/Requirement/OSRequirement.php
new file mode 100644
index 0000000..760c97a
--- /dev/null
+++ b/modules/setup/library/Setup/Requirement/OSRequirement.php
@@ -0,0 +1,27 @@
+<?php
+/* Icinga Web 2 | (c) 2015 Icinga Development Team | GPLv2+ */
+
+namespace Icinga\Module\Setup\Requirement;
+
+use Icinga\Application\Platform;
+use Icinga\Module\Setup\Requirement;
+
+class OSRequirement extends Requirement
+{
+ public function getTitle()
+ {
+ $title = parent::getTitle();
+ if ($title === null) {
+ return sprintf(mt('setup', '%s Platform'), ucfirst($this->getCondition()));
+ }
+
+ return $title;
+ }
+
+ protected function evaluate()
+ {
+ $phpOS = Platform::getOperatingSystemName();
+ $this->setStateText(sprintf(mt('setup', 'You are running PHP on a %s system.'), ucfirst($phpOS)));
+ return strtolower($phpOS) === strtolower($this->getCondition());
+ }
+}
diff --git a/modules/setup/library/Setup/Requirement/PhpConfigRequirement.php b/modules/setup/library/Setup/Requirement/PhpConfigRequirement.php
new file mode 100644
index 0000000..6c77af5
--- /dev/null
+++ b/modules/setup/library/Setup/Requirement/PhpConfigRequirement.php
@@ -0,0 +1,22 @@
+<?php
+/* Icinga Web 2 | (c) 2015 Icinga Development Team | GPLv2+ */
+
+namespace Icinga\Module\Setup\Requirement;
+
+use Icinga\Application\Platform;
+use Icinga\Module\Setup\Requirement;
+
+class PhpConfigRequirement extends Requirement
+{
+ protected function evaluate()
+ {
+ list($configDirective, $value) = $this->getCondition();
+ $configValue = Platform::getPhpConfig($configDirective);
+ $this->setStateText(
+ $configValue
+ ? sprintf(mt('setup', 'The PHP config `%s\' is set to "%s".'), $configDirective, $configValue)
+ : sprintf(mt('setup', 'The PHP config `%s\' is not defined.'), $configDirective)
+ );
+ return is_bool($value) ? $configValue == $value : $configValue === $value;
+ }
+}
diff --git a/modules/setup/library/Setup/Requirement/PhpModuleRequirement.php b/modules/setup/library/Setup/Requirement/PhpModuleRequirement.php
new file mode 100644
index 0000000..f8ab129
--- /dev/null
+++ b/modules/setup/library/Setup/Requirement/PhpModuleRequirement.php
@@ -0,0 +1,42 @@
+<?php
+/* Icinga Web 2 | (c) 2015 Icinga Development Team | GPLv2+ */
+
+namespace Icinga\Module\Setup\Requirement;
+
+use Icinga\Application\Platform;
+use Icinga\Module\Setup\Requirement;
+
+class PhpModuleRequirement extends Requirement
+{
+ public function getTitle()
+ {
+ $title = parent::getTitle();
+ if ($title === $this->getAlias()) {
+ if ($title === null) {
+ $title = $this->getCondition();
+ }
+
+ return sprintf(mt('setup', 'PHP Module: %s'), $title);
+ }
+
+ return $title;
+ }
+
+ protected function evaluate()
+ {
+ $moduleName = $this->getCondition();
+ if (Platform::extensionLoaded($moduleName)) {
+ $this->setStateText(sprintf(
+ mt('setup', 'The PHP module %s is available.'),
+ $this->getAlias() ?: $moduleName
+ ));
+ return true;
+ } else {
+ $this->setStateText(sprintf(
+ mt('setup', 'The PHP module %s is missing.'),
+ $this->getAlias() ?: $moduleName
+ ));
+ return false;
+ }
+ }
+}
diff --git a/modules/setup/library/Setup/Requirement/PhpVersionRequirement.php b/modules/setup/library/Setup/Requirement/PhpVersionRequirement.php
new file mode 100644
index 0000000..b811ca8
--- /dev/null
+++ b/modules/setup/library/Setup/Requirement/PhpVersionRequirement.php
@@ -0,0 +1,28 @@
+<?php
+/* Icinga Web 2 | (c) 2015 Icinga Development Team | GPLv2+ */
+
+namespace Icinga\Module\Setup\Requirement;
+
+use Icinga\Application\Platform;
+use Icinga\Module\Setup\Requirement;
+
+class PhpVersionRequirement extends Requirement
+{
+ public function getTitle()
+ {
+ $title = parent::getTitle();
+ if ($title === null) {
+ return mt('setup', 'PHP Version');
+ }
+
+ return $title;
+ }
+
+ protected function evaluate()
+ {
+ $phpVersion = Platform::getPhpVersion();
+ $this->setStateText(sprintf(mt('setup', 'You are running PHP version %s.'), $phpVersion));
+ list($operator, $requiredVersion) = $this->getCondition();
+ return version_compare($phpVersion, $requiredVersion, $operator);
+ }
+}
diff --git a/modules/setup/library/Setup/Requirement/SetRequirement.php b/modules/setup/library/Setup/Requirement/SetRequirement.php
new file mode 100644
index 0000000..77cbaf0
--- /dev/null
+++ b/modules/setup/library/Setup/Requirement/SetRequirement.php
@@ -0,0 +1,34 @@
+<?php
+/* Icinga Web 2 | (c) 2020 Icinga GmbH | GPLv2+ */
+
+namespace Icinga\Module\Setup\Requirement;
+
+use Icinga\Module\Setup\Requirement;
+
+/**
+ * Add requirement field
+ *
+ * @package Icinga\Module\Setup\Requirement
+ */
+class SetRequirement extends Requirement
+{
+ protected function evaluate()
+ {
+ $condition = $this->getCondition();
+
+ if ($condition->getState()) {
+ $this->setStateText(sprintf(
+ mt('setup', '%s is available.'),
+ $this->getAlias() ?: $this->getTitle()
+ ));
+ return true;
+ }
+
+ $this->setStateText(sprintf(
+ mt('setup', '%s is missing.'),
+ $this->getAlias() ?: $this->getTitle()
+ ));
+
+ return false;
+ }
+}
diff --git a/modules/setup/library/Setup/Requirement/WebLibraryRequirement.php b/modules/setup/library/Setup/Requirement/WebLibraryRequirement.php
new file mode 100644
index 0000000..bab587a
--- /dev/null
+++ b/modules/setup/library/Setup/Requirement/WebLibraryRequirement.php
@@ -0,0 +1,24 @@
+<?php
+/* Icinga Web 2 | (c) 2021 Icinga GmbH | GPLv2+ */
+
+namespace Icinga\Module\Setup\Requirement;
+
+use Icinga\Application\Icinga;
+use Icinga\Module\Setup\Requirement;
+
+class WebLibraryRequirement extends Requirement
+{
+ protected function evaluate()
+ {
+ list($name, $op, $version) = $this->getCondition();
+
+ $libs = Icinga::app()->getLibraries();
+ if (! $libs->has($name)) {
+ $this->setStateText(sprintf(mt('setup', '%s is not installed'), $this->getAlias()));
+ return false;
+ }
+
+ $this->setStateText(sprintf(mt('setup', '%s version: %s'), $this->getAlias(), $libs->get($name)->getVersion()));
+ return $libs->has($name, $op . $version);
+ }
+}
diff --git a/modules/setup/library/Setup/Requirement/WebModuleRequirement.php b/modules/setup/library/Setup/Requirement/WebModuleRequirement.php
new file mode 100644
index 0000000..ad600e1
--- /dev/null
+++ b/modules/setup/library/Setup/Requirement/WebModuleRequirement.php
@@ -0,0 +1,31 @@
+<?php
+/* Icinga Web 2 | (c) 2020 Icinga GmbH | GPLv2+ */
+
+namespace Icinga\Module\Setup\Requirement;
+
+use Icinga\Application\Icinga;
+use Icinga\Module\Setup\Requirement;
+
+class WebModuleRequirement extends Requirement
+{
+ protected function evaluate()
+ {
+ list($name, $op, $version) = $this->getCondition();
+
+ $mm = Icinga::app()->getModuleManager();
+ if (! $mm->hasInstalled($name)) {
+ $this->setStateText(sprintf(mt('setup', '%s is not installed'), $this->getAlias()));
+ return false;
+ }
+
+ $module = $mm->getModule($name, false);
+
+ $moduleVersion = $module->getVersion();
+ if ($moduleVersion[0] === 'v') {
+ $moduleVersion = substr($moduleVersion, 1);
+ }
+
+ $this->setStateText(sprintf(mt('setup', '%s version: %s'), $this->getAlias(), $moduleVersion));
+ return version_compare($moduleVersion, $version, $op);
+ }
+}
diff --git a/modules/setup/library/Setup/RequirementSet.php b/modules/setup/library/Setup/RequirementSet.php
new file mode 100644
index 0000000..672fad4
--- /dev/null
+++ b/modules/setup/library/Setup/RequirementSet.php
@@ -0,0 +1,335 @@
+<?php
+/* Icinga Web 2 | (c) 2014 Icinga Development Team | GPLv2+ */
+
+namespace Icinga\Module\Setup;
+
+use LogicException;
+use RecursiveIterator;
+use Traversable;
+
+/**
+ * Container to store and handle requirements
+ */
+class RequirementSet implements RecursiveIterator
+{
+ /**
+ * Mode AND (all requirements must be met)
+ */
+ const MODE_AND = 0;
+
+ /**
+ * Mode OR (at least one requirement must be met)
+ */
+ const MODE_OR = 1;
+
+ /**
+ * Whether all requirements meet their condition
+ *
+ * @var bool
+ */
+ protected $state;
+
+ /**
+ * Whether this set is optional
+ *
+ * @var bool
+ */
+ protected $optional;
+
+ /**
+ * The mode by which the requirements are evaluated
+ *
+ * @var string
+ */
+ protected $mode;
+
+ /**
+ * The registered requirements
+ *
+ * @var array
+ */
+ protected $requirements;
+
+ /**
+ * The raw state of this set's requirements
+ *
+ * @var bool
+ */
+ private $forcedState;
+
+ /**
+ * Initialize a new set of requirements
+ *
+ * @param bool $optional Whether this set is optional
+ * @param int $mode The mode by which to evaluate this set
+ */
+ public function __construct($optional = false, $mode = null)
+ {
+ $this->optional = $optional;
+ $this->requirements = array();
+ $this->setMode($mode ?: static::MODE_AND);
+ }
+
+ /**
+ * Set the state of this set
+ *
+ * @param bool $state
+ *
+ * @return RequirementSet
+ */
+ public function setState($state)
+ {
+ $this->state = (bool) $state;
+ return $this;
+ }
+
+ /**
+ * Return the state of this set
+ *
+ * Alias for RequirementSet::fulfilled(true).
+ *
+ * @return bool
+ */
+ public function getState()
+ {
+ return $this->fulfilled(true);
+ }
+
+ /**
+ * Set whether this set of requirements should be optional
+ *
+ * @param bool $state
+ *
+ * @return RequirementSet
+ */
+ public function setOptional($state = true)
+ {
+ $this->optional = (bool) $state;
+ return $this;
+ }
+
+ /**
+ * Return whether this set of requirements is optional
+ *
+ * @return bool
+ */
+ public function isOptional()
+ {
+ return $this->optional;
+ }
+
+ /**
+ * Set the mode by which to evaluate the requirements
+ *
+ * @param int $mode
+ *
+ * @return RequirementSet
+ *
+ * @throws LogicException In case the given mode is invalid
+ */
+ public function setMode($mode)
+ {
+ if ($mode !== static::MODE_AND && $mode !== static::MODE_OR) {
+ throw new LogicException(sprintf('Invalid mode %u given.'), $mode);
+ }
+
+ $this->mode = $mode;
+ return $this;
+ }
+
+ /**
+ * Return the mode by which the requirements are evaluated
+ *
+ * @return int
+ */
+ public function getMode()
+ {
+ return $this->mode;
+ }
+
+ /**
+ * Register a requirement
+ *
+ * @param Requirement $requirement The requirement to add
+ *
+ * @return RequirementSet
+ */
+ public function add(Requirement $requirement)
+ {
+ $merged = false;
+ foreach ($this->requirements as $knownRequirement) {
+ if ($knownRequirement instanceof Requirement && $requirement->equals($knownRequirement)) {
+ $knownRequirement->setOptional($requirement->isOptional());
+ foreach ($requirement->getDescriptions() as $description) {
+ $knownRequirement->addDescription($description);
+ }
+
+ $merged = true;
+ break;
+ }
+ }
+
+ if (! $merged) {
+ $this->requirements[] = $requirement;
+ }
+
+ return $this;
+ }
+
+ /**
+ * Return all registered requirements
+ *
+ * @return array
+ */
+ public function getAll()
+ {
+ return $this->requirements;
+ }
+
+ /**
+ * Register the given set of requirements
+ *
+ * @param RequirementSet $set The set to register
+ *
+ * @return RequirementSet
+ */
+ public function merge(RequirementSet $set)
+ {
+ if ($this->getMode() === $set->getMode() && $this->isOptional() === $set->isOptional()) {
+ foreach ($set->getAll() as $requirement) {
+ if ($requirement instanceof static) {
+ $this->merge($requirement);
+ } else {
+ $this->add($requirement);
+ }
+ }
+ } else {
+ $this->requirements[] = $set;
+ }
+
+ return $this;
+ }
+
+ /**
+ * Return whether all requirements can successfully be evaluated based on the current mode
+ *
+ * In case this is a optional set of requirements (and $force is false), true is returned immediately.
+ *
+ * @param bool $force Whether to ignore the optionality of a set or single requirement
+ *
+ * @return bool
+ */
+ public function fulfilled($force = false)
+ {
+ $state = $this->isOptional();
+ if (! $force && $state) {
+ return true;
+ }
+
+ if (! $force && $this->state !== null) {
+ return $this->state;
+ } elseif ($force && $this->forcedState !== null) {
+ return $this->forcedState;
+ }
+
+ $self = $this->requirements;
+ foreach ($self as $requirement) {
+ if ($requirement->getState()) {
+ $state = true;
+ if ($this->getMode() === static::MODE_OR) {
+ break;
+ }
+ } elseif ($force || !$requirement->isOptional()) {
+ $state = false;
+ if ($this->getMode() === static::MODE_AND) {
+ break;
+ }
+ }
+ }
+
+ if ($force) {
+ return $this->forcedState = $state;
+ }
+
+ return $this->state = $state;
+ }
+
+ /**
+ * Return whether the current element represents a nested set of requirements
+ *
+ * @return bool
+ */
+ public function hasChildren(): bool
+ {
+ $current = $this->current();
+ return $current instanceof static;
+ }
+
+ /**
+ * Return a iterator for the current nested set of requirements
+ *
+ * @return ?RecursiveIterator
+ */
+ public function getChildren(): ?RecursiveIterator
+ {
+ return $this->current();
+ }
+
+ /**
+ * Rewind the iterator to its first element
+ */
+ public function rewind(): void
+ {
+ reset($this->requirements);
+ }
+
+ /**
+ * Return whether the current iterator position is valid
+ *
+ * @return bool
+ */
+ public function valid(): bool
+ {
+ return key($this->requirements) !== null;
+ }
+
+ /**
+ * Return the current element in the iteration
+ *
+ * @return Requirement|RequirementSet
+ */
+ #[\ReturnTypeWillChange]
+ public function current()
+ {
+ return current($this->requirements);
+ }
+
+ /**
+ * Return the position of the current element in the iteration
+ *
+ * @return int
+ */
+ public function key(): int
+ {
+ return key($this->requirements);
+ }
+
+ /**
+ * Advance the iterator to the next element
+ */
+ public function next(): void
+ {
+ next($this->requirements);
+ }
+
+ /**
+ * Return this set of requirements rendered as HTML
+ *
+ * @return string
+ */
+ public function __toString()
+ {
+ $renderer = new RequirementsRenderer($this);
+ return (string) $renderer;
+ }
+}
diff --git a/modules/setup/library/Setup/RequirementsRenderer.php b/modules/setup/library/Setup/RequirementsRenderer.php
new file mode 100644
index 0000000..cc9392a
--- /dev/null
+++ b/modules/setup/library/Setup/RequirementsRenderer.php
@@ -0,0 +1,64 @@
+<?php
+/* Icinga Web 2 | (c) 2015 Icinga Development Team | GPLv2+ */
+
+namespace Icinga\Module\Setup;
+
+use RecursiveIteratorIterator;
+
+class RequirementsRenderer extends RecursiveIteratorIterator
+{
+ public function beginIteration(): void
+ {
+ $this->tags[] = '<ul class="requirements">';
+ }
+
+ public function endIteration(): void
+ {
+ $this->tags[] = '</ul>';
+ }
+
+ public function beginChildren(): void
+ {
+ $this->tags[] = '<li>';
+ $currentSet = $this->getSubIterator();
+ $state = $currentSet->getState() ? 'fulfilled' : ($currentSet->isOptional() ? 'not-available' : 'missing');
+ $this->tags[] = '<ul class="set-state ' . $state . '">';
+ }
+
+ public function endChildren(): void
+ {
+ $this->tags[] = '</ul>';
+ $this->tags[] = '</li>';
+ }
+
+ public function render()
+ {
+ foreach ($this as $requirement) {
+ $this->tags[] = '<li class="clearfix">';
+ $this->tags[] = '<div class="title"><h2>' . $requirement->getTitle() . '</h2></div>';
+ $this->tags[] = '<div class="description">';
+ $descriptions = $requirement->getDescriptions();
+ if (count($descriptions) > 1) {
+ $this->tags[] = '<ul>';
+ foreach ($descriptions as $d) {
+ $this->tags[] = '<li>' . $d . '</li>';
+ }
+ $this->tags[] = '</ul>';
+ } elseif (! empty($descriptions)) {
+ $this->tags[] = $descriptions[0];
+ }
+ $this->tags[] = '</div>';
+ $this->tags[] = '<div class="state ' . ($requirement->getState() ? 'fulfilled' : (
+ $requirement->isOptional() ? 'not-available' : 'missing'
+ )) . '">' . $requirement->getStateText() . '</div>';
+ $this->tags[] = '</li>';
+ }
+
+ return implode("\n", $this->tags);
+ }
+
+ public function __toString()
+ {
+ return $this->render();
+ }
+}