shithub: riscv

ref: eacf9fbbee70d9effcc5b049f3c9e437979f50d5
dir: /rc/bin/ipconf/lra/

#!/bin/rc

# on hook and initialize
fn initfn {
	dial/drain
	dial/at -q -t 5 zh0
}

# dial telephone number
fn dialfn {
	dial/drain
	dial/at -q -t 60 dt^$1
}

# process options
for(i in $*){
	switch($i){
	case '-P'
		primary=-P
	}
}

# the following can be inherited
switch($dev){
case ''
	dev=/dev/eia1
}
switch($telno){
case ''
	telno=18009878722
}
switch($baud){
case ''
	baud=115200
}

{
	# set up uart
	if( test -e $dev^ctl ){
		echo -n b^$baud	# baud rate
		echo -n m1	# cts/rts flow control
		echo -n q64000	# big buffer
		echo -n n1	# nonblocking writes
		echo -n r1	# rts on
		echo -n d1	# dtr on
		echo -n c1	# handup wen we lose dcd
	} > $dev^ctl

	# get the modem's attention
	while( ! initfn )
		sleep 1

	# dial
	while( ! dialfn $telno )
		sleep 30
		
	if( ! dial/expect -it 60 'username:' ){
		echo lra: can''t connect >[1=2]
		exit connect
	}
	dial/pass
	if( ! dial/expect -it 60 'password:' ){
		echo lra: can''t connect >[1=2]
		exit connect
	}
	dial/pass
	if( ! dial/expect -t 60 'telnet:' ){
		echo lra: can''t connect >[1=2]
		exit connect
	}
	echo ppp
	echo connected to lra >[1=2]

	# start ppp
	ip/ppp $primary -f
} < $dev > $dev

# supply unknowns with inside addresses
if( ! grep -s 'auth=' /net/ndb){
	echo '	auth=135.104.9.7'>>/net/ndb
	echo '	authdom=cs.bell-labs.com'>>/net/ndb
}
if( ! grep -s 'ntp=' /net/ndb)
	echo '	ntp=135.104.9.2'>>/net/ndb
if( ! grep -s 'dns=' /net/ndb){
	echo '	dns=135.104.8.38'>>/net/ndb
	echo '	dns=135.104.70.11'>>/net/ndb
}

# start dns if it isn't already going
if(! test -e /srv/dns )
	ndb/dns -r