xisp user dialup.

From: Otako (keithmg_at_e3.net.nzREMOVETHIS)
Date: 06/02/04 

Date: 3 Jun 2004 00:29:18 +1200

Hello,
  xisp is a dialup gui tool which does not rely on gtk or qt libs.

to enable ordinary users to dialup the xisp documentation recommends
making /usr/sbin/pppd suid (4755) and creating a modem group "uucp".

I have done this and found that xisp works for ordinary users only
if pppd has been started and then stopped first by root.
ie - a user cannot use xisp to start pppd first before root, root has
to start/stop a pppd session and then users can use xisp after that as
long as the machine is up.

# xisp messages to user attemping dialup before root are-

                               connection initiated.
                               (30 sec timeout delay)
                               action terminated.
                               "Failed to start xisp for unknown reasons
                               (pppd daemon detached with status 0)"

I am using root to start and stop 'ppp-go' in console first so then users
can use xisp in their desktop.The modem is a lucent 56k on /dev/ttyLT0.
The distro is slackware-9.1.

Any ideas why the root pppd session is required here. I want xisp to be
user dialup without root having to initialse a pppd connection.

the only notable difference I can find is that the generic ppp module
will load but not the lt_serial, lt_modem modules for ordinary users
trying a dialup before root.

thanks for any suggestions,
keith.

##### device and fie permissions are as follows.

# modem device.
crw-rw---- 1 root uucp /dev/ttyLT0

# executables
-rwsr-x--- 1 root uucp /usr/sbin/pppd*
-r-xr-x--- 1 root uucp /usr/sbin/chat*
-rwxr-x--- 1 root uucp /usr/X11R6/bin/xisp*

# /etc/ppp
-rw------- 1 root uucp chap-secrets
-rw------- 1 root root connect-errors
-rwxr-xr-x 1 root uucp ip-down*
-rwxr-xr-x 1 root root ip-down.bak*
-rwxr-xr-x 1 root uucp ip-up*
-rwxr-xr-x 1 root root ip-up.bak*
-rw-rw---- 1 root uucp options
-rw------- 1 root root options.demand
-rw------- 1 root uucp pap-secrets
-rw------- 1 root root pppscript
-rw------- 1 root root pppsetup.txt
-rwxr-x--- 1 root uucp xispdial*
-rwxr-x--- 1 root uucp xispterm*

#/etc/ppp/peers
-rw-rw---- 1 root uucp xisp_dialer
-rw-rw---- 1 root uucp xisp_ttyLT0

#/usr/local/bin - two xisp executables for pid and record.
-rwxr-x--- 1 root uucp xispid*
-rwxr-x--- 1 root uucp xisprccv*

################

#
# /var/log/messages for failed user xisp dialup -

May 30 09:04:46 tui kernel: PPP generic driver version 2.4.2
May 30 09:04:46 tui pppd[462]: pppd 2.4.1 started by kth, uid 500
May 30 09:04:46 tui pppd[462]: Exit.
May 30 09:04:46 tui pppd[462]: pppd 2.4.1 started by kth, uid 500
May 30 09:04:46 tui pppd[462]: Exit.

#
# root dialup with 'ppp-go'-

May 30 09:11:09 tui pppd[478]: pppd 2.4.1 started by root, uid 0
May 30 09:11:10 tui kernel: Loading Lucent Modem Controller driver version 8.26
May 30 09:11:10 tui kernel: Detected Parameters Irq=9 BaseAddress=0xdc00
ComAddress=0xdff0
May 30 09:11:10 tui kernel: Lucent Modem Interface driver version 8.26
(2002-11-04) with SHARE_IRQ enabled
May 30 09:11:10 tui kernel: ttyLT00 at 0xdc00 (irq = 9) is a Lucent Modem
May 30 09:11:10 tui insmod: Warning: loading /lib/modules/2.4.22/ltmodem
/lt_modem.o will taint the kernel: non-GPL license - UNKNOWN
May 30 09:11:10 tui insmod: See http://www.tux.org/lkml/#export-tainted
for information about tainted modules
May 30 09:11:10 tui insmod: Module lt_modem loaded, with warnings
May 30 09:11:10 tui insmod: Module lt_serial loaded, with warnings
May 30 09:11:11 tui chat[481]: timeout set to 30 seconds
May 30 09:11:11 tui chat[481]: abort on (ERROR)
May 30 09:11:11 tui chat[481]: abort on (BUSY)
May 30 09:11:11 tui chat[481]: abort on (NO CARRIER)
May 30 09:11:11 tui chat[481]: abort on (NO DIALTONE)
May 30 09:11:11 tui chat[481]: send (AT&FH0^M)
May 30 09:11:11 tui chat[481]: expect (OK)
May 30 09:11:11 tui chat[481]: AT&FH0^M^M
May 30 09:11:11 tui chat[481]: OK
May 30 09:11:11 tui chat[481]: -- got it
May 30 09:11:11 tui chat[481]: send (atdt086304135^M)
May 30 09:11:11 tui chat[481]: timeout set to 30 seconds
May 30 09:11:11 tui chat[481]: expect (CONNECT)
May 30 09:11:11 tui chat[481]: ^M
May 30 09:11:38 tui chat[481]: atdt086304135^M^M
May 30 09:11:38 tui chat[481]: CONNECT
May 30 09:11:38 tui chat[481]: -- got it
May 30 09:11:38 tui pppd[478]: Serial connection established.
May 30 09:11:38 tui pppd[478]: Using interface ppp0
May 30 09:11:38 tui pppd[478]: Connect: ppp0 <--> /dev/ttyLT0
May 30 09:11:40 tui kernel: PPP BSD Compression module registered
May 30 09:11:40 tui kernel: PPP Deflate Compression module registered
May 30 09:11:40 tui pppd[478]: local IP address 210.185.4.31
May 30 09:11:40 tui pppd[478]: remote IP address 192.168.251.45

#
# After the root pppd session users can dialup with xisp.

May 30 09:24:55 tui pppd[623]: pppd 2.4.1 started by kth, uid 500
May 30 09:25:25 tui pppd[623]: Serial connection established.
May 30 09:25:25 tui pppd[623]: Using interface ppp0
May 30 09:25:25 tui pppd[623]: Connect: ppp0 <--> /dev/ttyLT0
May 30 09:25:27 tui pppd[623]: local IP address 210.185.7.20
May 30 09:25:27 tui pppd[623]: remote IP address 192.168.251.45
May 30 09:25:45 tui pppd[623]: Terminating on signal 2.
May 30 09:25:45 tui pppd[623]: Connection terminated.
May 30 09:25:45 tui pppd[623]: Connect time 0.4 minutes.
May 30 09:25:45 tui pppd[623]: Sent 55 bytes, received 42 bytes.
May 30 09:25:45 tui pppd[623]: Hangup (SIGHUP)
May 30 09:25:45 tui pppd[623]: Exit.