best pracitces to add wifi network to user’s login.keychain?

I am thinking about deploying a launch agent that runs as the user logs in, as the user to add our wifi network to the keychain. Thoughts?

 #!/bin/bash

# set user's login.keychain to have our wifi passsword
# run this as the user, via user agent

/usr/bin/security find-generic-password -a usd500_wpa

case `/bin/echo $?` in

  0 )) hasloginkeychain=yes;;

  * )) hasloginkeychain=no;;

esac

if [[ $hasloginkeychain -eq yes ]]

  then /usr/bin/security add-generic-password -a usd500_wpa -s AirPort -D "AirPort network password" -l usd500_wpa -w mypasskey -T /System/Library/PrivateFrameworks/Apple80211.framework/Versions/Current/Resources/airport -T /usr/libexec/airportd -U ~/Library/Keychains/login.keychain

  else /usr/bin/security add-generic-password -a usd500_wpa -s AirPort -D "AirPort network password" -l usd500_wpa -w mypasskey -T /System/Library/PrivateFrameworks/Apple80211.framework/Versions/Current/Resources/airport -T /usr/libexec/airportd -A ~/Library/Keychains/login.keychain

fi

exit 0 

Thoughts, suggestions, pointers, better methods all welcome.

Thanks in advance!

Tom