113 lines
2.7 KiB
Bash
113 lines
2.7 KiB
Bash
#! /usr/bin/env bash
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set -e
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# Arguments 'TO', optional user (can be configured in ~/.ssh/config.d/...), command to run over ssh
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# Figure out the IPAddress I need to operate from
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# Figure out the interface name to use
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# Set the interface to the IP Address if not already setup
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# Test with ping
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# Connect with SSH
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if [ $# -eq 0 ]; then
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printf '%s\n' \
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"${0#/*} <TO> [<FROM>] [<Interface>]" \
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"" \
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"Configure MacOS iface to connect to <TO> address from <FROM> address" \
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"Default <Interface> is en9" \
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"" \
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"FROM and FROM_SN will be autofilled for the following subnets:" \
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" 10.117.10.0/24" \
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" 192.168.[1 or 2].0/24" \
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"" \
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"for other subnets, you'll need to specify a FROM argument and a FROM_SN env variable" \
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""
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exit 2
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fi
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TO="${1}"
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IFACE="${IFACE:-en9}"
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SLEEP="${SLEEP:-3s}"
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PINGOK=1
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CMDs=("${@:2}")
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[ "${#CMDs}" -gt 0 ] || CMDs=( hostname )
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_myip() {
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lsip | awk "/${IFACE}/"'{split($3, a, "/"); print a[1];}'
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}
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_ping() {
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ping -c "${PING_C:-3}" -W 250 "${TO}"
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}
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_log() {
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printf '%s\n' \
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"${@:2}" \
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>&2
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exit ${1}
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}
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if _ping &>/dev/null; then
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printf "Connection detected.\n"
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else
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PINGOK=0
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case "${TO}" in
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10.117.10.*)
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FROM=10.117.10.254
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FROM_SN=255.255.255.0
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;;
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192.168.1.*)
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FROM=192.168.1.254
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FROM_SN=255.255.255.0
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;;
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192.168.2.*)
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FROM=192.168.2.254
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FROM_SN=255.255.255.0
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;;
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*)
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FROM=${FROM:?FROM and FROM_SN Must be supplied for unknown IPv4 destination $1}
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FROM_SN${FROM_SN:?FROM and FROM_SN Must be supplied for unknown IPv4 destination $1}
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;;
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esac
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MYIP=''
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MYIP="$(_myip)"
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if [ "$FROM" == "$MYIP" ]; then
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_log 2 "Already setup with $MYIP, but ping to $TO is failing, you'll need to troubleshoot this."
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exit 2
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fi
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echo "$MYIP detected on $IFACE, Setting up $FROM / $FROM_SN - \`sudo\` might be prompting you for your password"
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sudo ipconfig set "${IFACE}" manual "${FROM}" "${FROM_SN}" \
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&& sleep "${SLEEP}" \
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&& MYIP="$(_myip)"
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fi
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if [ $PINGOK -eq 0 ] && _ping &>/dev/null; then
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PINGOK=1
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fi
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if [ $PINGOK -eq 1 ]; then
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# auto-copy-ssh-id "${TO}"
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ssh-keygen -R "${TO}" || true
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ssh \
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-o PasswordAuthentication=no \
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-o BatchMode=yes \
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-o ConnectTimeout=2 \
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-ttn \
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"${TO}" -- "${CMDs[*]}" \
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|| 1>&2 printf '%s\n' \
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"Could not SSH into ${TO}, you might want to run 'pull-vast.id_rsa ${TO}' or 'auto-copy-ssh-id ${TO}'"
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else
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_log 2 "Ping faild."
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fi
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exit
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