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LLLLIIIIBBBBXXXXRRRRXXXX((((1111)))) XXXX VVVVeeeerrrrssssiiiioooonnnn 11111111 ((((RRRReeeelllleeeeaaaasssseeee 6666....3333)))) LLLLIIIIBBBBXXXXRRRRXXXX((((1111)))) NNNNAAAAMMMMEEEE libxrx - RX Netscape Navigator Plug-in DDDDEEEESSSSCCCCRRRRIIIIPPPPTTTTIIIIOOOONNNN The RRRRXXXX PPPPlllluuuugggg----iiiinnnn may be used with Netscape Navigator (3.0 or later) to interpret documents in the RX MIME type format and start remote applications. The RRRRXXXX PPPPlllluuuugggg----iiiinnnn reads an RX document, from which it gets the list of services the application wants to use. Based on this information, the RRRRXXXX PPPPlllluuuugggg----iiiinnnn 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. In addition when the RX document is used within the EMBED tag (a Netscape extension to HTML), the RRRRXXXX PPPPlllluuuugggg----iiiinnnn uses the XC-APPGROUP extension, if it is supported by your X server, to cause the remote application to be embedded within the browser page from which it was launched. IIIINNNNSSSSTTTTAAAALLLLLLLLAAAATTTTIIIIOOOONNNN The RRRRXXXX PPPPlllluuuugggg----iiiinnnn is installed as libxrx.so in /var/netscape/communicator/plugins. An N32 version is also installed in /var/netscape/communicator/plugins32. If you have configured Netscape Navigator to use the RX helper program (xxxxrrrrxxxx)(not shipped by SGI), you must reconfigure it. Generally you simply need to remove or comment out the line you may have previously added in your mailcap file to use the RX helper program. Otherwise the plug-in will not be enabled. (The usual comment character for mailcap is ``#''.) If you are already running Netscape Navigator, you need to exit and restart it after copying the plug-in library so the new plug-in will be found. Once this is done you can check that Navigator has successfully loaded the plug-in by checking the ``About Plug-ins'' page from the Help menu. This should show something like: RX Plug-in File name: /var/netscape/communicator/plugins/libxrx.so X Remote Activation Plug-in Mime Type Description Suffixes Enabled Page 1 (printed 4/6/01) LLLLIIIIBBBBXXXXRRRRXXXX((((1111)))) XXXX VVVVeeeerrrrssssiiiioooonnnn 11111111 ((((RRRReeeelllleeeeaaaasssseeee 6666....3333)))) LLLLIIIIBBBBXXXXRRRRXXXX((((1111)))) application/x-rx X Remote Activation Plug-in rx Yes Once correctly configured, Netscape Navigator will activate the RRRRXXXX PPPPlllluuuugggg----iiiinnnn whenever you retrieve any document of the MIME type _a_p_p_l_i_c_a_t_i_o_n/_x-_r_x. RRRREEEESSSSOOOOUUUURRRRCCCCEEEESSSS The RRRRXXXX PPPPlllluuuugggg----iiiinnnn looks for resources associated with the widget nnnneeeettttssssccccaaaappppeeee....NNNNaaaavvvviiiiggggaaaattttoooorrrr ((((class NNNNeeeettttssssccccaaaappppeeee....TTTTooooppppLLLLeeeevvvveeeellllSSSShhhheeeellllllll)))) and understands the following resource names and classes: xxxxrrrrxxxxHHHHaaaassssFFFFiiiirrrreeeewwwwaaaallllllllPPPPrrrrooooxxxxyyyy ((((class XXXXrrrrxxxxHHHHaaaassssFFFFiiiirrrreeeewwwwaaaallllllllPPPPrrrrooooxxxxyyyy)))) Specifies whether an X server firewall proxy (see xfwp) is running and should be used. Default is ``False.'' xxxxrrrrxxxxIIIInnnntttteeeerrrrnnnnaaaallllWWWWeeeebbbbSSSSeeeerrrrvvvveeeerrrrssss ((((class XXXXrrrrxxxxIIIInnnntttteeeerrrrnnnnaaaallllWWWWeeeebbbbSSSSeeeerrrrvvvveeeerrrrssss)))) The web servers for which the X server firewall proxy should not be used (only relevant when xxxxrrrrxxxxHHHHaaaassssFFFFiiiirrrreeeewwwwaaaallllllllPPPPrrrrooooxxxxyyyy 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. xxxxrrrrxxxxFFFFaaaassssttttWWWWeeeebbbbSSSSeeeerrrrvvvveeeerrrrssss ((((class XXXXrrrrxxxxFFFFaaaassssttttWWWWeeeebbbbSSSSeeeerrrrvvvveeeerrrrssss)))) The web servers for which LBX should not be used. The resource value is a list of address mask/value pairs, as previously described. xxxxrrrrxxxxTTTTrrrruuuusssstttteeeeddddWWWWeeeebbbbSSSSeeeerrrrvvvveeeerrrrssss ((((class XXXXrrrrxxxxTTTTrrrruuuusssstttteeeeddddWWWWeeeebbbbSSSSeeeerrrrvvvveeeerrrrssss)))) 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. EEEENNNNVVVVIIIIRRRROOOONNNNMMMMEEEENNNNTTTT If the RX document requests X-UI-LBX service and the default X server does not advertise the LBX extension, the _R_X _P_l_u_g- _i_n will look for the environment variable ``XREALDISPLAY'' Page 2 (printed 4/6/01) LLLLIIIIBBBBXXXXRRRRXXXX((((1111)))) XXXX VVVVeeeerrrrssssiiiioooonnnn 11111111 ((((RRRReeeelllleeeeaaaasssseeee 6666....3333)))) LLLLIIIIBBBBXXXXRRRRXXXX((((1111)))) to get a second address for your X server and look for the LBX extension there. When running your browser through _l_b_x_p_r_o_x_y 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, _R_X _P_l_u_g-_i_n 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, _R_X _P_l_u_g-_i_n uses the first one specified through the variable ``XPSERVERLIST'' when it is set. When it is not _R_X _P_l_u_g-_i_n then tries to use the video server as the print server. If the printer name is not specified via XPRINTER, _R_X _P_l_u_g-_i_n looks for it in the variables ``PDPRINTER'', then ``LPDEST'', and finally ``PRINTER'', Finally, if you are using a firewall proxy, _R_X _P_l_u_g-_i_n 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. KKKKNNNNOOOOWWWWNNNN BBBBUUUUGGGG When an authorization key is created for a remote application to use the X Print service, the RRRRXXXX PPPPlllluuuugggg----iiiinnnn has to create the key with an infinite timeout since nobody knows when the application will actually connect to the X Print server. It then revokes the key when its instance is destroyed (that is when you go to another page). However, if the Plug-in does not get destroyed properly, which happens when Netscape Navigator dies unexpectedly, the print authorization key will never get revoked. SSSSEEEEEEEE AAAALLLLSSSSOOOO xrx (1), xfwp (1), lbxproxy (1), proxymngr (1), The RX Document specification AAAAUUUUTTTTHHHHOOOORRRRSSSS Arnaud Le Hors and Kaleb Keithley, X Consortium Page 3 (printed 4/6/01) 
