.\" $Xorg: libxrx.man,v 1.4 2001/02/09 02:05:57 xorgcvs Exp $ .\" Copyright 1996, 1998 The Open Group .\" .\" Permission to use, copy, modify, distribute, and sell this software and its .\" documentation for any purpose is hereby granted without fee, provided that .\" the above copyright notice appear in all copies and that both that .\" copyright notice and this permission notice appear in supporting .\" documentation. .\" .\" The above copyright notice and this permission notice shall be included .\" in all copies or substantial portions of the Software. .\" .\" THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS .\" OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF .\" MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. .\" IN NO EVENT SHALL THE OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR .\" OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, .\" ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR .\" OTHER DEALINGS IN THE SOFTWARE. .\" .\" Except as contained in this notice, the name of The Open Group shall .\" not be used in advertising or otherwise to promote the sale, use or .\" other dealings in this Software without prior written authorization .\" from The Open Group. .\" .\" .\" $XFree86: xc/programs/xrx/plugin/libxrx.man,v 1.7 2001/01/27 18:21:22 dawes Exp $ .\" .TH LIBXRX 1 __xorgversion__ .SH NAME libxrx - RX Netscape Navigator Plug-in .SH DESCRIPTION The \fBRX Plug-in\fP may be used with Netscape Navigator (3.0 or later) to interpret documents in the RX MIME type format and start remote applications. .PP The \fBRX Plug-in\fP reads an RX document, from which it gets the list of services the application wants to use. Based on this information, the \fBRX Plug-in\fP 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 \fBRX Plug-in\fP 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. .PP .SH INSTALLATION To install the \fBRX Plug-in\fP so that Netscape Navigator can use it, find the file named libxrx.so.6.3 or libxrx.sl.6.3 (or similar, depending on your platform) in /lib (e.g. /usr/X11R6/lib) and copy it to either /usr/local/lib/netscape/plugins or $HOME/.netscape/plugins. Do not install the symlinks libxrx.so or libxrx.sl; they would confuse Netscape. .PP If you have configured Netscape Navigator to use the RX helper program (\fBxrx\fP), 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 ``#''.) .PP 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: /usr/local/lib/netscape/plugins/libxrx.sl.6.3 X Remote Activation Plug-in Mime Type Description Suffixes Enabled application/x-rx X Remote Activation Plug-in xrx Yes .PP Once correctly configured, Netscape Navigator will activate the \fBRX Plug-in\fP whenever you retrieve any document of the MIME type \fIapplication/x-rx\fP. .PP .SH RESOURCES The \fBRX Plug-in\fP looks for resources associated with the widget \fBnetscape.Navigator (\fPclass\fB Netscape.TopLevelShell)\fP and understands the following resource names and classes: .\".in +1in .TP 8 .B "xrxHasFirewallProxy (\fPclass\fB XrxHasFirewallProxy)" Specifies whether an X server firewall proxy (see xfwp) is running and should be used. Default is ``False.'' The X firewall proxy uses the X Security Extension and this extension will only allow clients to connect to the X server if host-based authentication is turned on. See \fBxfwp(1)\fP for more information. .TP 8 .B "xrxInternalWebServers (\fPclass\fB XrxInternalWebServers)" The web servers for which the X server firewall proxy should not be used (only relevant when \fBxrxHasFirewallProxy\fP 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. .TP 8 .B "xrxFastWebServers (\fPclass\fB 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. .TP 8 .B "xrxTrustedWebServers (\fPclass\fB 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. .PP .SH ENVIRONMENT If the RX document requests X-UI-LBX service and the default X server does not advertise the LBX extension, the \fIRX Plug-in\fP 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 \fIlbxproxy\fP 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. .PP If the RX document requests XPRINT service, \fIRX Plug-in\fP 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, \fIRX Plug-in\fP uses the first one specified through the variable ``XPSERVERLIST'' when it is set. When it is not \fIRX Plug-in\fP then tries to use the video server as the print server. If the printer name is not specified via XPRINTER, \fIRX Plug-in\fP looks for it in the variables ``PDPRINTER'', then ``LPDEST'', and finally ``PRINTER'', .PP Finally, if you are using a firewall proxy, \fIRX Plug-in\fP 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. .PP .SH KNOWN BUG When an authorization key is created for a remote application to use the X Print service, the \fBRX Plug-in\fP 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. .PP .SH SEE ALSO xrx (1), xfwp (1), lbxproxy (1), proxymngr (1), The RX Document specification .SH AUTHORS Arnaud Le Hors and Kaleb Keithley, X Consortium