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comparison .ssh/athome @ 265:df0b24d4fabd
Think I'm ready to check this all in now; shared dotfiles that can be "sent"
through an SSH connection to be used and cleaned up when finished.
| author | Steve Huston <huston@srhuston.net> |
|---|---|
| date | Wed, 24 Apr 2024 16:15:40 -0400 |
| parents | |
| children | 33541d73d6d7 |
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| 264:bb69763716a7 | 265:df0b24d4fabd |
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| 1 #!/usr/bin/env bash | |
| 2 | |
| 3 # Check to see if we're at home - does our externally routable IP address | |
| 4 # match the one on my home network. This should be fast, and needs to be | |
| 5 # portable so it works in multiple ways, but if everything else fails we'll | |
| 6 # return false which should still allow things to work. | |
| 7 | |
| 8 # Logic swap for negating outputs | |
| 9 on=0 | |
| 10 off=1 | |
| 11 if [[ "$1" == "--not" ]] ; then | |
| 12 shift | |
| 13 on=1 | |
| 14 off=0 | |
| 15 fi | |
| 16 | |
| 17 # Start by getting our current IP, this is surprisingly easy thanks to Amazon | |
| 18 MYIP=`curl -s checkip.amazonaws.com` | |
| 19 | |
| 20 # Now how to get the home IP.. let's loop through ways it's possible | |
| 21 HOMEDNS="b6800200.eero.online" | |
| 22 | |
| 23 if which -s getent awk ; then | |
| 24 HOMEIP=`getent ahostsv4 $HOMEDNS | awk '{print $1; exit}'` | |
| 25 elif which -s dig ; then | |
| 26 HOMEIP=`dig +short $HOMEDNS` | |
| 27 else | |
| 28 exit $off | |
| 29 fi | |
| 30 | |
| 31 [[ $MYIP == $HOMEIP ]] && exit $on || exit $off |