Net::XMPP::IQ(3)

NAME
Net::XMPP::IQ - XMPP Info/Query Module

SYNOPSIS
  Net::XMPP::IQ is a companion to the Net::XMPP module. It
  provides the user a simple interface to set and retrieve all
  parts of an XMPP IQ.

DESCRIPTION
  Net::XMPP::IQ differs from the other Net::XMPP::* modules in that
  the XMLNS of the query is split out into a submodule under
  IQ.  For specifics on each module please view the documentation
  for the Net::XMPP::Namespaces module.

  A Net::XMPP::IQ object is passed to the callback function for the
  message.  Also, the first argument to the callback functions is the
  session ID from XML::Stream.  There are some cases where you might
  want this information, like if you created a Client that connects to
  two servers at once, or for writing a mini server.

    use Net::XMPP;

    sub iq {
      my ($sid,$IQ) = @_;
      .
      .
      my $reply = $IQ->Reply();
      my $replyQuery->GetQuery();
      .
    }

  You now have access to all of the retrieval functions available.

  To create a new iq to send to the server:

    use Net::XMPP;

    $IQ = Net::XMPP::IQ->new();
    $IQType = $IQ->NewChild( type );
    $IQType->SetXXXXX("yyyyy");

  Now you can call the creation functions for the IQ, and for the
  <query/> on the new query object itself.  See below for the <iq/>
  functions, and in each query module for those functions.

METHODS

  General functions
  Reply(%args) - Creates a return <iq/> with the to and from
                 filled in correctly, and a query object already
                 added in.  The %args that you pass are passed
                 to SetIQ() and will overwrite the IQ settings
                 that Reply sets.

  Retrieval functions
  GetTo()      - returns either a string with the JID, or a
  GetTo("jid")   Net::XMPP::JID object for the person who is
                 going to receive the <iq/>.  To get the JID
                 object set the string to "jid", otherwise leave
                 blank for the text string.

                 $to    = $IQ->GetTo();
                 $toJID = $IQ->GetTo("jid");

  GetFrom()      -  returns either a string with the JID, or a
  GetFrom("jid")    Net::XMPP::JID object for the person who
                    sent the <iq/>.  To get the JID object set
                    the string to "jid", otherwise leave blank for the
                    text string.

                    $from    = $IQ->GetFrom();
                    $fromJID = $IQ->GetFrom("jid");

  GetType() - returns a string with the type <iq/> this is.

              $type = $IQ->GetType();

  GetID() - returns an integer with the id of the <iq/>.

            $id = $IQ->GetID();

  GetError() - returns a string with the text description of the error.

               $error = $IQ->GetError();

  GetErrorCode() - returns a string with the code of error.

                   $errorCode = $IQ->GetErrorCode();

  GetQuery() - returns a Net::XMPP::Stanza object that contains the data
               in the query of the <iq/>.  Basically, it returns the
               first child in the <iq/>.

               $query = $IQ->GetQuery();

  GetQueryXMLNS() - returns a string with the namespace of the query
                    for this <iq/>, if one exists.

                    $xmlns = $IQ->GetQueryXMLNS();

  Creation functions
  SetIQ(to=>string|JID,    - set multiple fields in the <iq/> at one
        from=>string|JID,    time.  This is a cumulative and over
        id=>string,          writing action.  If you set the "to"
        type=>string,        attribute twice, the second setting is
        errorcode=>string,   what is used.  If you set the status, and
        error=>string)       then set the priority then both will be in
                             the <iq/> tag.  For valid settings read the
                             specific Set functions below.

                             $IQ->SetIQ(type=>"get",
                                        to=>"bob\@jabber.org");

                             $IQ->SetIQ(to=>"bob\@jabber.org",
                                        errorcode=>403,
                                        error=>"Permission Denied");

  SetTo(string) - sets the to attribute.  You can either pass a string
  SetTo(JID)      or a JID object.  They must be a valid Jabber
                  Identifiers or the server will return an error message.
                  (ie.  bob@jabber.org, etc...)

                  $IQ->SetTo("bob\@jabber.org");

  SetFrom(string) - sets the from attribute.  You can either pass a
  SetFrom(JID)      string or a JID object.  They must be a valid JIDs
                    or the server will return an error message.
                    (ie.  bob@jabber.org, etc...)

                    $IQ->SetFrom("me\@jabber.org");

  SetType(string) - sets the type attribute.  Valid settings are:

                    get      request information
                    set      set information
                    result   results of a get
                    error    there was an error

                    $IQ->SetType("set");

  SetErrorCode(string) - sets the error code of the <iq/>.

                         $IQ->SetErrorCode(403);

  SetError(string) - sets the error string of the <iq/>.

                     $IQ->SetError("Permission Denied");

  NewChild(string) - creates a new Net::XMPP::Stanza object with the
                     namespace in the string.  In order for this
                     function to work with a custom namespace, you
                     must define and register that namespace with the
                     IQ module.  For more information please read the
                     documentation for Net::XMPP::Stanza.

                     $queryObj = $IQ->NewChild("jabber:iq:auth");
                     $queryObj = $IQ->NewChild("jabber:iq:roster");

  Reply(hash) - creates a new IQ object and populates the to/from
                fields.  If you specify a hash the same as with SetIQ
                then those values will override the Reply values.

                $iqReply = $IQ->Reply();
                $iqReply = $IQ->Reply(type=>"result");

  Removal functions
  RemoveTo() - removes the to attribute from the <iq/>.

               $IQ->RemoveTo();

  RemoveFrom() - removes the from attribute from the <iq/>.

                 $IQ->RemoveFrom();

  RemoveID() - removes the id attribute from the <iq/>.

               $IQ->RemoveID();

  RemoveType() - removes the type attribute from the <iq/>.

                 $IQ->RemoveType();

  RemoveError() - removes the <error/> element from the <iq/>.

                  $IQ->RemoveError();

  RemoveErrorCode() - removes the code attribute from the <error/>
                      element in the <iq/>.

                      $IQ->RemoveErrorCode();

  Test functions
  DefinedTo() - returns 1 if the to attribute is defined in the <iq/>,
                0 otherwise.

                $test = $IQ->DefinedTo();

  DefinedFrom() - returns 1 if the from attribute is defined in the
                  <iq/>, 0 otherwise.

                  $test = $IQ->DefinedFrom();

  DefinedID() - returns 1 if the id attribute is defined in the <iq/>,
                0 otherwise.

                $test = $IQ->DefinedID();

  DefinedType() - returns 1 if the type attribute is defined in the
                  <iq/>, 0 otherwise.

                  $test = $IQ->DefinedType();

  DefinedError() - returns 1 if <error/> is defined in the <iq/>,
                   0 otherwise.

                   $test = $IQ->DefinedError();

  DefinedErrorCode() - returns 1 if the code attribute is defined in
                       <error/>, 0 otherwise.

                       $test = $IQ->DefinedErrorCode();

  DefinedQuery() - returns 1 if there is at least one namespaced
                   child in the object.

AUTHOR
Originally authored by Ryan Eatmon.

Previously maintained by Eric Hacker.

Currently maintained by Darian Anthony Patrick.

COPYRIGHT
This module is free software, you can redistribute it and/or modify it under the LGPL 2.1.