Package org.jivesoftware.openfire.commands

Class AdHocCommandHandler

java.lang.Object
org.jivesoftware.openfire.container.BasicModule
org.jivesoftware.openfire.handler.IQHandler
org.jivesoftware.openfire.commands.AdHocCommandHandler
All Implemented Interfaces:
ChannelHandler<org.xmpp.packet.IQ>, Module, DiscoInfoProvider, DiscoItemsProvider, ServerFeaturesProvider
public class AdHocCommandHandler extends IQHandler implements ServerFeaturesProvider, DiscoInfoProvider, DiscoItemsProvider
An AdHocCommandHandler is responsible for providing discoverable information about the supported commands and for handling commands requests. This is an implementation of JEP-50: Ad-Hoc Commands.

Ad-hoc commands that require user interaction will have one or more stages. For each stage the user will complete a data form and send it back to the server. The data entered by the user is kept in a SessionData. Instances of AdHocCommand are stateless. In order to prevent "bad" users from consuming all system memory there exists a limit of simultaneous commands that a user might perform. Configure the system property "xmpp.command.limit" to control this limit. User sessions will also timeout and their data destroyed if they have not been executed within a time limit since the session was created. The default timeout value is 10 minutes. The timeout value can be modified by setting the system property "xmpp.command.timeout".

New commands can be added dynamically by sending the message addCommand(AdHocCommand). The command will immediately appear in the disco#items list and might be executed by those users with enough execution permissions.

Author:
Gaston Dombiak

  • Constructor Details

    • AdHocCommandHandler

      public AdHocCommandHandler()

  • Method Details

    • handleIQ

      public org.xmpp.packet.IQ handleIQ(org.xmpp.packet.IQ packet) throws UnauthorizedException
      Description copied from class: IQHandler
      Handles the received IQ packet.
      Specified by:
      handleIQ in class IQHandler
      Parameters:
      packet - the IQ packet to handle.
      Returns:
      the response to send back.
      Throws:
      UnauthorizedException - if the user that sent the packet is not authorized to request the given operation.

    • getInfo

      public IQHandlerInfo getInfo()
      Description copied from class: IQHandler
      Returns the handler information to help generically handle IQ packets. IQHandlers that aren't local server iq handlers (e.g. chatbots, transports, etc) return null.
      Specified by:
      getInfo in class IQHandler
      Returns:
      The IQHandlerInfo for this handler

    • getFeatures

      public Iterator<String> getFeatures()
      Description copied from interface: ServerFeaturesProvider
      Returns an Iterator (of String) with the supported features by the server. The features to include are the features offered and supported protocols by the SERVER. The idea is that different modules may provide their features that will ultimately be part of the features offered by the server.
      Specified by:
      getFeatures in interface ServerFeaturesProvider
      Returns:
      an Iterator (of String) with the supported features by the server.

    • getIdentities

      public Iterator<org.dom4j.Element> getIdentities(String name, String node, org.xmpp.packet.JID senderJID)
      Description copied from interface: DiscoInfoProvider
      Returns an Iterator (of Element) with the target entity's identities. Each Element must include the category, type and name attributes of the entity.
      Specified by:
      getIdentities in interface DiscoInfoProvider
      Parameters:
      name - the recipient JID's name.
      node - the requested disco node.
      senderJID - the XMPPAddress of user that sent the disco info request.
      Returns:
      an Iterator (of Element) with the target entity's identities.

    • getFeatures

      public Iterator<String> getFeatures(String name, String node, org.xmpp.packet.JID senderJID)
      Description copied from interface: DiscoInfoProvider
      Returns an Iterator (of String) with the supported features. The features to include are the features offered and supported protocols by the target entity identified by the requested name and node.
      Specified by:
      getFeatures in interface DiscoInfoProvider
      Parameters:
      name - the recipient JID's name.
      node - the requested disco node.
      senderJID - the XMPPAddress of user that sent the disco info request.
      Returns:
      an Iterator (of String) with the supported features.

    • getExtendedInfos

      public Set<org.xmpp.forms.DataForm> getExtendedInfos(String name, String node, org.xmpp.packet.JID senderJID)
      Description copied from interface: DiscoInfoProvider
      Returns a collection of XDataForm with the extended information about the entity or an empty collection if none. Each bit of information about the entity must be included as a value of a field of the form.
      Specified by:
      getExtendedInfos in interface DiscoInfoProvider
      Parameters:
      name - the recipient JID's name.
      node - the requested disco node.
      senderJID - the XMPPAddress of user that sent the disco info request.
      Returns:
      A collection of XDataForms with the extended information about the entity or an empty collection if none.

    • hasInfo

      public boolean hasInfo(String name, String node, org.xmpp.packet.JID senderJID)
      Description copied from interface: DiscoInfoProvider
      Returns true if we can provide information related to the requested name and node. For example, if the requested name refers to a non-existent MUC room then the answer will be false. In case that the sender of the disco request is not authorized to discover this information an UnauthorizedException will be thrown.
      Specified by:
      hasInfo in interface DiscoInfoProvider
      Parameters:
      name - the recipient JID's name.
      node - the requested disco node.
      senderJID - the XMPPAddress of user that sent the disco info request.
      Returns:
      true if we can provide information related to the requested name and node.

    • getItems

      public Iterator<DiscoItem> getItems(String name, String node, org.xmpp.packet.JID senderJID)
      Description copied from interface: DiscoItemsProvider
      Returns an Iterator (of DiscoItem) with the target entity's items or null if none. Each DiscoItem must include a JID attribute and may include the name and node attributes of the entity. In case that the sender of the disco request is not authorized to discover items an UnauthorizedException will be thrown.
      Specified by:
      getItems in interface DiscoItemsProvider
      Parameters:
      name - the recipient JID's name.
      node - the requested disco node.
      senderJID - the XMPPAddress of user that sent the disco items request.
      Returns:
      an Iterator (of DiscoItem) with the target entity's items or null if none.

    • initialize

      public void initialize(XMPPServer server)
      Description copied from class: BasicModule

      Initializes the basic module.

      Inheriting classes that choose to override this method MUST call this initialize() method before accessing BasicModule resources.

      Specified by:
      initialize in interface Module
      Overrides:
      initialize in class IQHandler
      Parameters:
      server - the server hosting this module.

    • start

      public void start() throws IllegalStateException
      Description copied from class: BasicModule

      Starts the basic module.

      Inheriting classes that choose to override this method MUST call this start() method before accessing BasicModule resources.

      Specified by:
      start in interface Module
      Overrides:
      start in class BasicModule
      Throws:
      IllegalStateException - If start is called before initialize successfully returns

    • stop

      public void stop()
      Description copied from class: BasicModule

      Stops the basic module.

      Inheriting classes that choose to override this method MUST call this stop() method before accessing BasicModule resources.

      Specified by:
      stop in interface Module
      Overrides:
      stop in class BasicModule

    • addCommand

      public void addCommand(AdHocCommand command)
      Adds a new command to the list of supported ad-hoc commands by this server. The new command will appear in the discoverable items list and will be executed for those users with enough permission.
      Parameters:
      command - the new ad-hoc command to add.

    • removeCommand

      public void removeCommand(AdHocCommand command)
      Removes the command from the list of ad-hoc commands supported by this server. The command will no longer appear in the discoverable items list.
      Parameters:
      command - the ad-hoc command to remove.