| #!/bin/sh |
| |
| # Invoked by dnsmasq when there is lease activity |
| # Fingerprints compatible with fingerbank. |
| # https://github.com/inverse-inc/fingerbank/blob/master/dhcp_fingerprints.conf |
| |
| . /etc/utils.sh |
| |
| fingerprint="$DNSMASQ_REQUESTED_OPTIONS" |
| cmd="$1" |
| mac="$2" |
| # dnsmasq also passes in: |
| # ip="$3" |
| # hostname="$4" |
| |
| FILE="/config/dhcp.fingerprints" |
| |
| if [ -z "$mac" ]; then |
| exit 0 |
| fi |
| |
| otherprints=$(head -n 256 "$FILE" | grep -vs "$mac") |
| if [ "$cmd" = "del" ]; then |
| atomic "$FILE" "$otherprints" |
| exit 0 |
| fi |
| |
| if [ -z "$fingerprint" ]; then |
| exit 0 |
| fi |
| |
| newprints="$mac ${fingerprint} |
| ${otherprints}" |
| |
| atomic "$FILE" "$newprints" |
| |
| exit 0 |
