diff options
Diffstat (limited to 'mdk-stage1/ppp/scripts/callback')
| -rwxr-xr-x | mdk-stage1/ppp/scripts/callback | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/mdk-stage1/ppp/scripts/callback b/mdk-stage1/ppp/scripts/callback new file mode 100755 index 000000000..3e74e10b2 --- /dev/null +++ b/mdk-stage1/ppp/scripts/callback @@ -0,0 +1,77 @@ +#!/bin/sh +################################################################### +# +# Script to dial the remote system, negotiate the connection, and send +# it the id. Then wait for the modem to disconnect. Reset the modem +# to answer mode and wait for the system to call back. +# +# The telephone number and modempass are used when establishing the +# connection to the modem. +# +PHONE=555-1212 +MODEMPASS=modem_identifier +# +# Once the modem calls back, the account name and password are used for +# a UNIX style login operation. +# +ACCOUNT=my_account_name +PASSWORD=my_password + +################################################################### +# +# Step 1. Dial the modem and negotiate the initial dialog. +# note: the modem is configured to ignore loss of DCD at this point. +# it is important that this be performed because the loss of DCD +# will normally prevent system from working since 'modem' is used +# for pppd. +# +# The script is terminated normally when the carrier is lost. +# +chat -v \ + TIMEOUT 3 \ + ABORT '\nBUSY\r' \ + ABORT '\nNO ANSWER\r' \ + ABORT '\nRINGING\r\n\r\nRINGING\r' \ + '' AT \ + 'OK-+++\c-OK' 'AT&C0&D2S0=0H0 \ + TIMEOUT 30 \ + OK ATDT$TELEPHONE \ + CONNECT '' \ + assword: $MODEMPASS \ + "\nNO CARRIER\r" + +if [ "$?" = "0" ]; then + +################################################################### +# +# Step 2. Wait for the call back from the remote. This will wait for at most +# 30 seconds for the call back should the first attempt fail or +# something happen with the callback logic at the remote. +# +# note: when the callback occurs, the DCD setting is re-enabled. +# +# If some voice call should happen during this period, the system will +# answer the telephone and then hang up on them. I realize that this is +# rude, but there is little that this script can do. +# + chat -v \ + TIMEOUT 30 \ + ABORT '\nVOICE\r' \ + '\nRING\r' 'AT&C1A' \ + CONNECT '' \ + TIMEOUT 10 \ + ogin:--ogin: $ACCOUNT \ + TIMEOUT 45 \ + assword: $PASSWORD + + if [ "$?" = "0" ]; then + exit 0 + fi +fi + +################################################################### +# +# The script has failed. Terminate the connection mode. +# +chat -v TIMEOUT 3 "" AT 'OK-+++\c-OK' 'AT&C1&D2S0=0H0' OK +exit 1 |