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xmonisdn - monitor for ISDN network
xmonisdn [ -toolkitoption
... ] [ -option ... ]
The xmonisdn program displays the status of the
ISDN network connection and allows the starting and stopping of the ISDN
subsystem. If the ISDN subsystem is not active, a window showing a terminal
in the foreground and a dashed terminal in the backgorund is displayed.
If the ISDN system is active, but there is no network connection established,
two terminals with dashed arrows between them is displayed. If there is
a incoming connection or there is dialing in progress, the arrows become
more solid. An outgoing network connection is signaled by solid arrows between
the terminals and the window is displayed in reverse video. If the ISDN
subsystem dials out or hangs up, the program beeps to signal the state
change (this can be changed using the volume option).
Pressing button
2 on the window executes the command /sbin/netup and pressing button 3
executes /sbin/netdown
/sbin/netup and /sbin/netdown should start and stop the ISDN subsystem;
if the route command is used, xmonisdn must be run as setuid root for
this to work. Alternatively, the scripts can manipulate the isdnctrl dialmode
setting, in which case only permission to access /dev/isdnctrl is needed.
xmonisdn accepts all of the standard X Toolkit command line options
along with the additional options listed below:
- -help
- This option indicates
that a brief summary of the allowed options should be printed on the standard
error.
- -update tenth of a second
- This option specifies the frequency in 1/10
of a second at which xmonisdn should update its display. If the window
is obscured and then exposed, it will be updated immediately. The default
is 0.5 seconds (i.e. -update 5).
- -file filename
- This option specifies the name
of the file which should be monitored. By default, it watches /dev/isdninfo.
- -volume percentage
- This option specifies how loud the bell should be rung
when there is an important status change.
- -shape
- This option indicates that
the xmonisdn window should be shaped if masks for the images are given.
The following standard X Toolkit command line arguments are commonly used
with xmonisdn:
- -display display
- This option specifies the X server to contact.
- -geometry geometry
- This option specifies the preferred size and position
of the xmonisdn window. The icon is 48 pixels wide and 48 pixels high and
will be centered in the window.
- -bg color
- This option specifies the color
to use for the background of the window.
- -bd color
- This option specifies
the color to use for the border of the window.
- -bw number
- This option specifies
the width in pixels of the border surrounding the window.
- -fg color
- This
option specifies the color to use for the foreground of the window.
- -rv
- This
option indicates that reverse video should be simulated by swapping the
foreground and background colors.
- -xrm resourcestring
- This option specifies
a resource string to be used. This is especially useful for setting resources
that do not have separate command line options.
The application
class name is xmonisdn. This program uses the Netstat widget. It understands
all of the core resource names and classes as well as:
- file (class File)
- Specifies the name of the file to monitor. The default is to watch /dev/isdninfo.
- width (class Width)
- Specifies the width of the icon.
- height (class Height)
- Specifies the height of the icon.
- update (class Interval)
- Specifies the
frequency in 1/10 of a second at which the isdninfo file should be checked.
The default is 5.
- volume (class Volume)
- Specifies how loud the bell should
be rung. The default is 33 percent.
- foreground (class Foreground)
- Specifies
the color for the foreground.
- reverseVideo (class ReverseVideo)
- Specifies
that the foreground and background should be reversed.
- flip (class Flip)
- Specifies whether or not the image that is shown when there is an outgoing
network connection should be inverted. The default is ``true.''
- inactivePixmap
(class Pixmap)
- Specifies a bitmap to be shown when the ISDN subsystem is
inactive. The default is netinactive.
- waitingPixmap (class Pixmap)
- Specifies
a bitmap to be shown when the ISDN subsystem is active, but there is no
connection. The default is netwaiting.
- activePixmap (class Pixmap)
- Specifies
a bitmap to be shown when there is a incoming network connection (or dialing
is in progress). The default is netactive.
- activeoutPixmap (class Pixmap)
- Specifies a bitmap to be shown when there is a outgoing network connection.
The default is netactiveout.
- startPixmap (class Pixmap)
- Specifies a bitmap
to be shown when the ISDN network is started up. The default is netstart.
- stopPixmap (class Pixmap)
- Specifies a bitmap to be shown when the ISDN
network is stopped. The default is netstop.
- shapeWindow (class ShapeWindow)
- Specifies whether or not the xmonisdn window should be shaped to the given
PixmapMasks. The default is false.
- inactivePixmapMask (class PixmapMask)
- Specifies a mask for the bitmap to be shown when the ISDN subsystem is
inactive. The default is none.
- waitingPixmapMask (class PixmapMask)
- Specifies
a mask for the bitmap to be shown when the ISDN subsystem is active, but
there is no connection. The default is none.
- activePixmapMask (class PixmapMask)
- Specifies a mask for the bitmap to be shown when when there is a incoming
network connection (or dialing is in progress). The default is none.
- activeoutPixmapMask
(class PixmapMask)
- Specifies a mask for the bitmap to be shown when there
is a outgoing network connection. The default is none.
- startPixmapMask (class
PixmapMask)
- Specifies a mask for the bitmap to be shown when the ISDN
network is started up. The default is none.
- stopPixmapMask (class PixmapMask)
- Specifies a mask for the bitmap to be shown when the ISDN network is stopped.
The default is none.
The Netstat widget provides the following actions
for use in event translations:
- check()
- This action causes the widget to
check the isdninfo file and display the appropriate icon.
- netdown()
- This
action causes the widget to execute /sbin/netdown stop.
- netup()
- This action
causes the widget to execute /sbin/netup start.
The default translation
is
<ButtonPress>Button2: netup()
<ButtonPress>Button3: netdown()
There are a number of reasons why you should not run xmonisdn
as a `setuid root' program. Most importantly, any setuid root program is a
potential security hole. The scripts that are executed by xmonisdn may be
compromised, or contain non-absolute paths to the commands called (so that
by changing the PATH variable the wrong binary is executed!); or the script
may in turn call other things that are not secure.
If you are sure that your scripts are secure and you insist on making xmonisdn
setuid root, you can give the -r option as first option. This will turn off
xmonisdn's setuid detection. However, you are on your own if you do this!
A better alternative is to put the isdn devices in group dialout (if not
so already), and add yourself to the dialout group. This way you have permission
to manipulate the ISDN devices, e.g. to use isdnctrl to change the dialmode
setting to off (to disable dialing) or auto (for autodial). The whole ISDN
system may also be turned on and off, see the isdnctrl manpage for more
info. This is a more secure way of controlling the dialing than e.g. by manipulating
routes.
- DISPLAY
- to get the default host and display number.
- XENVIRONMENT
- to get the name of a resource file that overrides the global resources
stored in the RESOURCE_MANAGER property.
Bernhard Nebel
isdnctrl(8)
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