m() { printf "%s\n" "$*"; "$@"; }
+
+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)
+}
+
+
## begin arg parsing ##
force=false
## end arg parsing ##
-
+## begin common setup / detection ##
shopt -s nullglob
wiredx=1
+declare -a args
# device that has an eth0, but we aren't using it because it is
# broken. We could just hardcode a mac comparison with `cat
nm_con=$(nmcli device show $eth_dev | \
awk '$1 == "GENERAL.CONNECTION:" {out=$2; for(i=3;i<=NF;i++){out=out" "$i}; print out}' ||:)
-if [[ ! $nm_con ]]; then
+if [[ ! $nm_con || $nm_con == -- ]]; then
nm_con="Wired connection $wiredx"
fi
-
-con_exists=false
-if nmcli con | grep -q "^$nm_con " &>/dev/null; then
- con_exists=true
+if ! nmcli con | grep -q "^$nm_con " &>/dev/null; then
+ # Note: we could support creation through a file or via
+ # nmcli, but right now I'm ok with just having plugged in a device once
+ # since this os was installed.
+ echo "error: no existing connection: $nm_con found in output of nmcli con"
+ exit 0
fi
-declare -a args
-if $off; then
-
- if ! $con_exists; then
- echo "warning: no existing connection: $nm_con found in output of nmcli con"
- exit 0
- fi
-
- tmpstr=$(nmcli con show "$nm_con" 2>/dev/null | sort -r | awk '$1 == "ipv4.method:" || $1 == "ipv4.addresses:" || $1 == "ipv4.gateway:" || $1 == "ipv4.dns:" || $1 == "GENERAL.STATE:" {print $2}' )
- {
- read -r ipv4_method
- read -r ipv4_gateway
- read -r ipv4_dns
- read -r ipv4_addresses
- read -r state
- }<<<"$tmpstr"
+if ! type -p dig &>/dev/null; then
+ apt-get install dig
+fi
- reup=false
- if [[ $state == activated ]]; then
- reup=true
- fi
+get-cur
+## end common setup / detection ##
- if [[ $ipv4_method != auto ]]; then
- args+=(ipv4.method auto)
- fi
- if [[ $ipv4_addresses != -- ]]; then
- args+=(-ipv4.addresses "$ipv4_addresses")
- fi
- if [[ $ipv4_dns != -- ]]; then
- args+=(-ipv4.dns "$ipv4_dns")
- fi
- if [[ $ipv4_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
+if $off; then
+ set-dynamic
exit 0
fi
+detect-net
+get-ip
-if [[ $(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
- # we are at_home=true
-
- 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 ${HOSTNAME}c ip suffix in /p/c/host-info"
- exit 1
- fi
-else
- if ! type -p dig &>/dev/null; then
- apt-get install dig
- fi
- myip=$(dig +short @192.168.0.25 $HOSTNAME.office.fsf.org)
- if [[ ! $ip ]]; 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
-fi
-
-if ! $force && $con_exists; then
- current=$(nmcli con show "$nm_con" 2>/dev/null | sort -r | awk '$1 == "ipv4.method:" || $1 == "ipv4.addresses:" || $1 == "ipv4.gateway:" || $1 == "ipv4.dns:" {print $2}')
- expected="manual
-$gateway
-$dns
-$ip"
- if [[ $current == "$expected" ]]; then
- echo "$0: found expected state, nothing to do."
- exit 0
- fi
+if ! $force && [[ "$cur_method $cur_gateway $cur_dns $cur_ip" == "manual $gateway $dns $ip" ]]; then
+ echo "$0: found expected state, nothing to do."
+ exit 0
fi
-m nmcli con mod 'Wired connection 1' ipv4.method manual ipv4.addresses $ip ipv4.gateway $gateway ipv4.dns $dns
+set-nm
-state=$(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
# example of down cli
iankelling.org / git / automated-distro-installer / commitdiff