File indexing completed on 2024-04-21 14:53:24

 /*
     SPDX-FileCopyrightText: 2009-2012 Dario Freddi <drf@kde.org>
     SPDX-FileCopyrightText: 2008 Nicola Gigante <nicola.gigante@gmail.com>
     SPDX-FileCopyrightText: 2022 Harald Sitter <sitter@kde.org>
 
     SPDX-License-Identifier: LGPL-2.1-or-later
 */
 
 #ifndef KAUTH_ACTION_H
 #define KAUTH_ACTION_H
 
 #include "kauthcore_export.h"
 
 #include <QHash>
 #include <QSharedDataPointer>
 #include <QString>
 #include <QVariant>
 
 #if __has_include(<chrono>)
 #include <chrono>
 #endif
 
 namespace KAuth
 {
 class ExecuteJob;
 
 class ActionData;
 /**
  * @class Action action.h <KAuth/Action>
  *
  * @brief Class to access, authorize and execute actions.
  *
  * This is the main class of the KAuth API. It provides the interface to
  * manipulate actions. Every action is identified by its name. Every instance
  * of the Action class with the same name refers to the same action.
  *
  * Once you have an action object you can tell the helper to execute it
  * (asking the user to authenticate if needed) with the execute() method.
  * The simplest thing to do is to execute a single action synchronously
  * blocking for the reply by calling KJob::exec() on the job object returned by
  * execute().
  *
  * For asynchronous calls, use KAuth::ExecuteJob::start() instead.
  * It sends the request
  * to the helper and returns immediately. Before doing so you should however
  * connect to at least the KJob::result(KJob *) signal to receive a slot call
  * once the action is done executing.
  *
  * To use the execute() method you have to set the default helper's ID using
  * the setHelperId() static method. Alternatively, you can specify the helperID using
  * the overloaded version of the methods that takes it as a parameter.
  *
  * Each action object contains a QVariantMap object that is passed directly to the
  * helper when the action is executed. You can access this map using the arguments()
  * method. You can insert into it any kind of custom data you need to pass to the helper.
  *
  * @code
  * void MyApp::runAction()
  * {
  *     action = KAuth::Action("org.kde.myapp.action");
  *     KAuth::ExecuteJob *job = action.execute();
  *     connect(job, &KAuth::ExecuteJob::result, this, &MyApp::actionResult);
  *     job->start();
  * }
  *
  * void MyApp::actionResult(KJob *kjob)
  * {
  *     auto job = qobject_cast<KAuth::ExecuteJob *>(kjob);
  *     qDebug() << job.error() << job.data();
  * }
  * @endcode
  *
  * @since 4.4
  */
 class KAUTHCORE_EXPORT Action
 {
     Q_GADGET
 public:
     /**
      * The three values set by authorization methods
      */
     enum AuthStatus {
         DeniedStatus, ///< The authorization has been denied by the authorization backend
         ErrorStatus, ///< An error occurred
         InvalidStatus, ///< An invalid action cannot be authorized
         AuthorizedStatus, ///< The authorization has been granted by the authorization backend
         AuthRequiredStatus, ///< The user could obtain the authorization after authentication
         UserCancelledStatus, ///< The user pressed Cancel the authentication dialog. Currently used only on the mac
     };
     Q_ENUM(AuthStatus)
 
     enum ExecutionMode {
         ExecuteMode,
         AuthorizeOnlyMode,
     };
     Q_ENUM(ExecutionMode)
 
     /**
      * The backend specific details.
      */
     enum class AuthDetail {
         DetailOther = 0,
         DetailMessage, ///< The message to show in authentication dialog.
     };
     Q_ENUM(AuthDetail)
 
     /**
      * Map of details.
      */
     typedef QMap<AuthDetail, QVariant> DetailsMap;
 
     /**
      * @brief Default constructor
      *
      * This constructor sets the name to the empty string.
      * Such an action is invalid and cannot be authorized nor executed, so
      * you need to call setName() before you can use the object.
      */
     Action();
 
     /** Copy constructor */
     Action(const Action &action);
 
     /**
      * This creates a new action object with this name
      * @param name The name of the new action
      */
     Action(const QString &name);
 
 #if KAUTHCORE_ENABLE_DEPRECATED_SINCE(5, 71)
     /**
      * This creates a new action object with this name and details
      * @param name The name of the new action
      * @param details The details of the action
      *
      * @see setDetails
      * @deprecated since 5.68, use constructor with DetailsMap
      */
     KAUTHCORE_DEPRECATED_VERSION_BELATED(5, 71, 5, 68, "Use constructor with DetailsMap")
     Action(const QString &name, const QString &details);
 #endif
 
     /**
      * This creates a new action object with this name and details
      * @param name The name of the new action
      * @param details The details of the action
      *
      * @see setDetails
      * @since 5.68
      */
     Action(const QString &name, const DetailsMap &details);
 
     /// Virtual destructor
     ~Action();
 
     /// Assignment operator
     Action &operator=(const Action &action);
 
     /**
      * @brief Comparison operator
      *
      * This comparison operator compares the <b>names</b> of two
      * actions and returns whether they are the same. It does not
      * care about the arguments stored in the actions. However,
      * if two actions are invalid they'll match as equal, even
      * if the invalid names are different.
      *
      * @returns true if the two actions are the same or both invalid
      */
     bool operator==(const Action &action) const;
 
     /**
      * @brief Negated comparison operator
      *
      * Returns the negation of operator==
      *
      * @returns true if the two actions are different and not both invalid
      */
     bool operator!=(const Action &action) const;
 
     /**
      * @brief Gets the action's name.
      *
      * This is the unique attribute that identifies
      * an action object. Two action objects with the same
      * name always refer to the same action.
      *
      * @return The action name
      */
     QString name() const;
 
     /**
      * @brief Sets the action's name.
      *
      * It's not common to change the action name
      * after its creation. Usually you set the name
      * with the constructor (and you have to, because
      * there's no default constructor)
      */
     void setName(const QString &name);
 
     /**
      * @brief Gets the action's timeout.
      *
      * The timeout of the action in milliseconds
      * -1 means the default D-Bus timeout (usually 25 seconds)
      *
      * @since 5.29
      *
      * @return The action timeouts
      */
     int timeout() const;
 
     /**
      * @brief Sets the action's timeout.
      *
      * The timeout of the action in milliseconds
      * -1 means the default D-Bus timeout (usually 25 seconds)
      *
      * @since 5.29
      *
      */
     void setTimeout(int timeout);
 
 #if __has_include(<chrono>)
     /**
      * Convenience overload suporting C++ chrono types. May also be used with chrono literals.
      * @since 5.93
      */
     void setTimeout(std::chrono::milliseconds msec)
     {
         setTimeout(int(msec.count()));
     }
 #endif
 
 #if KAUTHCORE_ENABLE_DEPRECATED_SINCE(5, 71)
     /**
      * @brief Sets the action's details
      *
      * You can use this function to provide the user more details
      * (if the backend supports it) on the action being authorized in
      * the authorization dialog
      *
      * @deprecated since 5.68, use setDetailsV2() with DetailsMap.
      */
     KAUTHCORE_DEPRECATED_VERSION_BELATED(5, 71, 5, 68, "Use setDetailsV2() with DetailsMap")
     void setDetails(const QString &details);
 #endif
 
     /**
      * @brief Sets the action's details
      *
      * You can use this function to provide the user more details
      * (if the backend supports it) on the action being authorized in
      * the authorization dialog
      *
      * @param details the details describing the action. For e.g, "DetailMessage" key can
      * be used to give a customized authentication message.
      *
      * @since 5.68
      */
     void setDetailsV2(const DetailsMap &details);
 
 #if KAUTHCORE_ENABLE_DEPRECATED_SINCE(5, 71)
     /**
      * @brief Gets the action's details
      *
      * The details that will be shown in the authorization dialog, if the
      * backend supports it.
      *
      * @return The action's details
      * @deprecated since 5.68, use detailsV2() with DetailsMap.
      */
     KAUTHCORE_DEPRECATED_VERSION_BELATED(5, 71, 5, 68, "Use detailsV2() with DetailsMap")
     QString details() const;
 #endif
 
     /**
      * @brief Gets the action's details
      *
      * The details that will be shown in the authorization dialog, if the
      * backend supports it.
      *
      * @return The action's details
      * @since 5.68
      */
     DetailsMap detailsV2() const;
 
     /**
      * @brief Returns if the object represents a valid action
      *
      * Action names have to respect a simple syntax.
      * They have to be all in lowercase characters, separated
      * by dots. Dots can't appear at the beginning and at the end of
      * the name.
      *
      * In other words, the action name has to match this perl-like
      * regular expression:
      * @code
      * /^[a-z]+(\.[a-z]+)*$/
      * @endcode
      *
      * This method returns @c false if the action name doesn't match the
      * valid syntax.
      *
      * If the backend supports it, this method also checks if the action is
      * valid and recognized by the backend itself.
      * @note This may spawn a nested event loop.
      *
      * Invalid actions cannot be authorized nor executed.
      * The empty string is not a valid action name, so the default
      * constructor returns an invalid action.
      */
     bool isValid() const;
 
     /**
      * @brief Gets the default helper ID used for actions execution
      *
      * The helper ID is the string that uniquely identifies the helper in
      * the system. It is the string passed to the KAUTH_HELPER_MAIN() macro
      * in the helper source. Because one could have different helpers,
      * you need to specify an helper ID for each execution, or set a default
      * ID by calling setHelperId(). This method returns the current default
      * value.
      *
      * @return The default helper ID.
      */
     QString helperId() const;
 
     /**
      * @brief Sets the default helper ID used for actions execution
      *
      * This method sets the helper ID which contains the body of this action.
      * If the string is non-empty, the corresponding helper will be fired and
      * the action executed inside the helper. Otherwise, the action will be just
      * authorized.
      *
      * @note To unset a previously set helper, just pass an empty string
      *
      * @param id The default helper ID.
      *
      * @see hasHelper
      * @see helperId
      */
     void setHelperId(const QString &id);
 
     /**
      * @brief Checks if the action has an helper
      *
      * This function can be used to check if an helper will be called upon the
      * execution of an action. Such an helper can be set through setHelperId(). If
      * this function returns false, upon execution the action will be just authorized.
      *
      * @since 4.5
      *
      * @return Whether the action has an helper or not
      *
      * @see setHelperId
      */
     bool hasHelper() const;
 
     /**
      * @brief Sets the map object used to pass arguments to the helper.
      *
      * This method sets the variant map that the application
      * can use to pass arbitrary data to the helper when executing the action.
      *
      * Only non-gui variants are supported.
      *
      * @param arguments The new arguments map
      */
     void setArguments(const QVariantMap &arguments);
 
     /**
      * @brief Returns map object used to pass arguments to the helper.
      *
      * This method returns the variant map that the application
      * can use to pass arbitrary data to the helper when executing the action.
      *
      * @return The arguments map that will be passed to the helper.
      */
     QVariantMap arguments() const;
 
     /**
      * @brief Convenience method to add an argument.
      *
      * This method adds the pair @c key/value to the QVariantMap used to
      * send custom data to the helper.
      *
      * Use this method if you don't want to create a new QVariantMap only to
      * add a new entry.
      *
      * @param key The new entry's key
      * @param value The value of the new entry
      */
     void addArgument(const QString &key, const QVariant &value);
 
     /**
      * @brief Gets information about the authorization status of an action
      *
      * This methods query the authorization backend to know if the user can try
      * to acquire the authorization for this action. If the result is Action::AuthRequired,
      * the user can try to acquire the authorization by authenticating.
      *
      * It should not be needed to call this method directly, because the execution methods
      * already take care of all the authorization stuff.
      *
      * @return @c Action::Denied if the user doesn't have the authorization to execute the action,
      *         @c Action::Authorized if the action can be executed,
      *         @c Action::AuthRequired if the user could acquire the authorization after authentication,
      *         @c Action::UserCancelled if the user cancels the authentication dialog. Not currently supported by the Polkit backend
      */
     AuthStatus status() const;
 
     /**
      * @brief Get the job object used to execute the action
      *
      * @return The KAuth::ExecuteJob object to be used to run the action.
      */
     ExecuteJob *execute(ExecutionMode mode = ExecuteMode);
 
     /**
      * @brief Sets a parent widget for the authentication dialog
      *
      * This function is used for explicitly setting a parent window for an eventual authentication dialog required when
      * authorization is triggered. Some backends, in fact, (like polkit-1) need to have a parent explicitly set for displaying
      * the dialog correctly.
      *
      * @note If you are using KAuth through one of KDE's GUI components (KPushButton, KCModule...) you do not need and should not
      *       call this function, as it is already done by the component itself.
      *
      * @since 4.6
      *
      * @param parent A QWidget which will be used as the dialog's parent
      */
     void setParentWidget(QWidget *parent);
 
     /**
      * @brief Returns the parent widget for the authentication dialog for this action
      *
      * @since 4.6
      *
      * @returns A QWidget which will is being used as the dialog's parent
      */
     QWidget *parentWidget() const;
 
 private:
     QSharedDataPointer<ActionData> d;
 };
 
 } // namespace Auth
 
 #endif