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130 lines
3.4 KiB
Bash
Executable File
130 lines
3.4 KiB
Bash
Executable File
#!/bin/sh
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#
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# USAGE: connect-ppp <host>
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#
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# Set up a PPP link to host.
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#
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# This script locks the tty so that faxd and uucp will not
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# interfere. If you are running with faxd as you "getty" then
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# faxd will remove the lock once it notices that pppd is gone.
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# This is the reason for pppd running in with the -detach flag,
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# and you probably would run this script in the background.
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#
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# I had to create the nodropdtr option to pppd in order to be
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# able to do what the script is doing here. Pathces has been
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# sent to the respective people, but I don't know if they like
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# them :-).
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#
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# Look for comments with <LOCAL> in the string. They identify
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# things that you want to set for your system
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#<LOCAL> define whatever your config file is.
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CON_DB=/etc/ppp-connections
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#<LOCAL> define whatever your device is.
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DEVICE=cuaa0
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#<LOCAL> define whatever your device speed is.
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DEVICESPEED=57600
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#<LOCAL> define whatever your lock directory is.
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LOCKDIR=/var/spool/lock
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LOCKFILE=$LOCKDIR/LCK..$DEVICE
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#<LOCAL> define whatever debug level you want.
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DEBUG="-d -d -d -d"
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# Check that we got a name to connect to. This need not be an actuall hostname
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# just the name you specified in the config file.
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if [ $# -ne 1 ] ; then
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echo "Usage: $0 <host> &"
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exit 1
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fi
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# Get the configuration that is in effect for <name>
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LINE=`grep "^$1" $CON_DB`
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if [ -z "$LINE" ] ; then
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echo "Unknow host $1"
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exit 1
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fi
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# parse the CON_DB. The format is:
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#
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# <hostname>:<phone number>:<user id>:<password>:<local ip address>:\
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# <remove_ip_address><netmask>:<pppd options>
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#
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# The last three are optional. But I would recomend specifying a netmask also
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# when you specify a ip address.
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IP_ADDR=""
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IFS=':'
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set $LINE
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IFS=' '
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HOST=$1
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PHONE=$2
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USER=$3
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PASSWORD=$4
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OUR_IP_ADDR=$5
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THEIR_IP_ADDR=$6
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NETMASK=$7
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shift 7
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OPTIONS=$*
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if [ -f $LOCKFILE ] ; then
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echo "PPP device is locked"
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exit 1
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else
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# Lock the device
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# faxd and UUCP wants 10 character lock id.
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echo "$$" | awk '{printf("%10s",$0)}' > $LOCKFILE
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fi
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#Do we know our local ip address? If so pppd needs a : at the end of it.
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if [ ! -z "$OUR_IP_ADDR" ] ; then
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IP_ADDR=${OUR_IP_ADDR}:${THEIR_IP_ADDR}
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fi
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#Did we specify a netmask? If so convert to pppd format.
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if [ ! -z "$NETMASK" ] ; then
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NETMASK="netmask ${NETMASK}"
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fi
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# Do the actual work in a subshell so that we can turn off tostop and set
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# the tty speed before chat dials. The second reason for doing in like
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# is that if you aren't running BIDIR, and you are running faxd, clocal
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# doesn't get turned on from pppd so chat will never work if you exec
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# it from within pppd. I found that I needed to run uucp with the
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# HAVE_CLOCAL_BUG flag set to 1 in order to get it to work in conjunction
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# with faxd. Anyway, this setup seem to work.
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(
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stty $DEVICESPEED -tostop hupcl 2> /dev/null
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# <LOCAL> Modify the Modem initialization strings to be whatever works for you
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if chat -v ABORT "NO CARRIER" ABORT BUSY "" ATZ0E1 OK ATS50=255DT$PHONE \
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CONNECT "" ogin: $USER ssword: \\q$PASSWORD
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then
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# We got connected.
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/usr/libexec/pppd $DEBUG $OPTIONS -detach modem defaultroute \
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crtscts $NETMASK $DEVICE $DEVICESPEED $IP_ADDR
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else
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echo "PPP call failed" 1>&2
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exit 1
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fi
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) < /dev/$DEVICE > /dev/$DEVICE
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# Get the return code from the subshell.
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RC=$?
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# Clear the lock. Slight window here where someone could detect that
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# pppd is no longer running, remove its lock file and create its own.
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# How to fix??
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rm -f $LOCKFILE
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#Pass on the exit code.
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exit $RC
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