+
+set-dynamic() {
+
+ reup=false
+ if [[ $cur_state == activated ]]; then
+ reup=true
+ fi
+
+ if [[ $cur_method != auto ]]; then
+ args+=(ipv4.method auto)
+ fi
+ if [[ $cur_ip != -- ]]; then
+ args+=(-ipv4.addresses "$ipv4_addresses")
+ fi
+ if [[ $cur_dns != -- ]]; then
+ args+=(-ipv4.dns "$ipv4_dns")
+ fi
+ if [[ $cur_gateway != -- ]]; then
+ # undocumented in t11 man nmcli. guessed randomly
+ args+=(ipv4.gateway 0.0.0.0)
+ fi
+ if (( ${#args[@]} >= 1 )); then
+ m nmcli con mod "$nm_con" "${args[@]}"
+ if $reup; then
+ m nmcli con up "$nm_con"
+ fi
+ else
+ echo "$0: found expected state, nothing to do."
+ fi
+ exit 0
+ set-nm
+}
+
+detect-net() {
+
+ # this assumes we have wifi up
+ if [[ $(timeout 1 dig +short @10.2.0.1 -x 10.2.0.2 2>&1 ||:) == kd.b8.nz. ]] \
+ && ip n show 10.2.0.1 | grep . &>/dev/null; then
+ net=home
+ elif ip r show default | grep 'via 10.0.3.1 dev wlan0' &>/dev/null && [[ $(timeout 1 dig +short @10.0.3.1 -x 10.0.3.1) == cmc1.lan. ]]; then
+ net=work
+ else
+ echo "$0: error could not detect network"
+ exit 1
+ fi
+
+}
+
+set-nm() {
+ m nmcli con mod "$nm_con" ipv4.method manual ipv4.addresses $ip ipv4.gateway $gateway ipv4.dns $dns
+ state=$(nmcli con show "$nm_con" 2>/dev/null | awk '$1 == "GENERAL.STATE:" {print $2}')
+ if [[ $state == activated ]]; then
+ m nmcli con up "$nm_con"
+ fi
+
+}
+
+get-ip() {
+
+ case $net in
+ home)
+
+ while read -r ip_suf host mac; do
+ if [[ ! $ip_suf || $ip_suf == \#* ]]; then
+ continue
+ fi
+ if [[ $mac != usb ]]; then
+ continue
+ fi
+ if [[ $host == ${HOSTNAME}c ]]; then
+
+ ip=10.2.0.$ip_suf/16
+ gateway=10.2.0.1
+ dns=8.8.8.4,8.8.8.8
+ break
+ fi
+ done </p/c/host-info
+
+ if [[ ! $ip_suf ]]; then
+ echo "$0: error: failed to find ${HOSTNAME}c ip suffix in /p/c/host-info"
+ exit 1
+ fi
+ ;;
+ work)
+
+ if ! ip r show default | grep 'via 192.168.0.1 dev eth' &>/dev/null; then
+ if [[ $cur_method != manual ]]; then
+ echo "$0: error. Need to be on wired network to get our ip"
+ exit 1
+ fi
+ set-dynamic
+ sleep 10
+ fi
+ myip=$(timeout 1 dig +short @192.168.0.25 $HOSTNAME.office.fsf.org)
+ if [[ ! $myip ]]; then
+ echo "$0: error: didnt detect home network and failed to get office ip"
+ exit 1
+ fi
+ dns=192.168.0.10,192.168.0.25
+ gateway=192.168.0.1
+ ip=$myip/24
+
+ ;;
+ esac
+}
+
+
+get-cur-val() {
+ local key
+ key=$1
+ printf "%s\n" "$tmpstr" | awk '$1 == "'$key':" {print $2}'
+}
+
+get-cur() {
+ tmpstr=$(nmcli con show "$nm_con" 2>/dev/null)
+
+ cur_method=$(get-cur-val ipv4.method)
+ cur_ip=$(get-cur-val ipv4.addresses)
+ cur_gateway=$(get-cur-val ipv4.gateway)
+ cur_dns=$(get-cur-val ipv4.dns)
+ cur_state=$(get-cur-val GENERAL.STATE)
+}
+
+