[ новости /+++ | форум | теги | ]

NAME
     xrx - RX helper program

SYNOPSIS
     xrx [-toolkitoption ...] filename

DESCRIPTION
     The helper program may be  used  with  any  Web  browser  to
     interpret  documents  in  the  RX MIME type format and start
     remote applications.

     xrx reads in the RX document specified by its filename, from
     which  it gets the list of services the application wants to
     use.  Based  on  this  information,  xrx  sets  the  various
     requested services, including creating authorization keys if
     your X server  supports  the  SECURITY  extension.  It  then
     passes the relevant data, such as the X display name, to the
     application through an HTTP GET request  of  the  associated
     CGI  script.  The Web server then executes the CGI script to
     start the application. The client runs  on  the  web  server
     host connected to your X server.

INSTALLATION
     You need to configure your web browser to  use  xrx  for  RX
     documents.    Generally   the   following   line   in   your
     $HOME/.mailcap is enough:
           application/x-rx; xrx %s

     However, you may need to refer to your web  browser's  docu-
     mentation  for  exact  instructions  on  configuring  helper
     applications.

     Once correctly configured, your browser  will  activate  the
     helper  program  whenever  you  retrieve any document of the
     MIME type application/x-rx.

OPTIONS
     The xrx helper program accepts all of the standard X Toolkit
     command line options such as:

     -xrm resourcestring
             This option specifies a resource string to be  used.
             There may be several instances of this option on the
             command line.

RESOURCES
     The application class name of the xrx program is Xrx and  it
     understands  the  following  application  resource names and
     classes:

     xrxHasFirewallProxy (class XrxHasFirewallProxy)
             Specifies whether an X server  firewall  proxy  (see
             xfwp)  is  running  and  should  be used. Default is
             ``False.''

     xrxInternalWebServers (class XrxInternalWebServers)
             The web servers for  which  the  X  server  firewall
             proxy should not be used (only relevant when xrxHas-
             FirewallProxy is ``True''). Its  value  is  a  comma
             separated  list  of  mask/value  pairs to be used to
             filter internal web servers, based on their address.
             The  mask  part  specifies  which  segments  of  the
             address are to be  considered  and  the  value  part
             specifies what the result should match. For instance
             the following list:

                   255.255.255.0/198.112.45.0,
             255.255.255.0/198.112.46.0

             matches   the   address   sets:   198.112.45.*   and
             198.112.46.*. More precisely, the test is (address &
             mask) == value.

     xrxFastWebServers (class XrxFastWebServers)
             The web servers for which LBX should  not  be  used.
             The  resource  value is a list of address mask/value
             pairs, as previously described.

     xrxTrustedWebServers (class XrxTrustedWebServers)
             The  web  servers  from  which  remote  applications
             should  be run as trusted clients. The default is to
             run remote applications as  untrusted  clients.  The
             resource  value  is  a  list  of  address mask/value
             pairs, as previously described.

ENVIRONMENT
     The xrx helper program uses the standard X environment vari-
     ables  such  as ``DISPLAY'' to get the default X server host
     and display number. If the  RX  document  requests  X-UI-LBX
     service  and the default X server does not advertise the LBX
     extension,  xrx  will  look  for  the  environment  variable
     ``XREALDISPLAY''  to  get a second address for your X server
     and look for the LBX  extension  there.  When  running  your
     browser  through  lbxproxy you will need to set XREALDISPLAY
     to the actual address of your  server  if  you  wish  remote
     applications to be able to use LBX across the Internet.

     If the RX document requests XPRINT service,  xrx  looks  for
     the  variable  ``XPRINTER''  to  get  the printer name and X
     Print server address to use. If the server  address  is  not
     specified as part of XPRINTER, xrx uses the first one speci-
     fied through the variable ``XPSERVERLIST'' when it  is  set.
     When it is not xrx then tries to use the video server as the
     print server. If the  printer  name  is  not  specified  via
     XPRINTER,  xrx  looks for it in the variables ``PDPRINTER'',
     then ``LPDEST'', and finally ``PRINTER'',

     Finally, if you are using a firewall proxy,  xrx  will  look
     for  ``PROXY_MANAGER''  to  get  the  address  of your proxy
     manager (see proxymngr). When  not  specified  it  will  use
     ":6500" as the default.

KNOWN BUG
     When an authorization key is created for a  remote  applica-
     tion  to  use the X Print service, the helper program has to
     create the key with an infinite timeout since  nobody  knows
     when  the  application  will actually connect to the X Print
     server. Therefore, in this case, the  helper  program  stays
     around  to  revoke  the  key  when the application goes away
     (that is when its video key expires). However, if the helper
     program  dies  unexpectedly the print authorization key will
     never get revoked.

SEE ALSO
     libxrx (1), xfwp (1), lbxproxy (1), proxymngr  (1),  The  RX
     Document specification

AUTHOR
     Arnaud Le Hors, X Consortium

Партнёры:

Хостинг: