132 lines
3.1 KiB
Bash
Executable file
132 lines
3.1 KiB
Bash
Executable file
#!/usr/bin/bash
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# Set global variables
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Usage="
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$(basename $0) [PARAMETTER] [OPTION]
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set up a bridge interface. Use either doas or sudo to get the root access. Please make sure that you account have access to theses commands.
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This script will use either doas or sudo to access the root user and do some temporary modifications. You will be able to see it with 'ip a' command
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Please do not name your bridge the saùe as an already existed interface.
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PARAMETTER available
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-h, --help Print this help message and quit
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-v, --version Print the version of this program and quit
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OPTION available
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--addbridge=<bridge-id> Set the name for the new bridge interface, usually it is br0, br1, etc
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--rmbridge=<bridge-id> Remove a bridge interface. Be carefull, it do no verification wheither bridge-id is a real interface or a bridge interface.
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--addr=<address> Set an external address on the bridge. The external is the one accessible from the host.
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"
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Version="1.1.1"
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add_bridge() {
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echo "add bridge interface ${bridge}"
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${rooter} ip link add ${bridge} type bridge
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#echo "no interface to link with bridge ${bridge}"
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#$rooter ip link set dev wlan0 master br0
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echo "authorise qemu to use as interface ${bridge} as bridge"
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if cat /etc/qemu/bridge.conf | grep -q "${bridge}"
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then
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echo "pass, bridge already authorised"
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else
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echo "allow ${bridge}" | doas tee -a /etc/qemu/bridge.conf
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echo "entry added to /etc/qemu/bridge.conf"
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fi
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echo "activate bridge ${bridge}"
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${rooter} ip link set dev ${bridge} up
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}
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rm_bridge() {
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echo "rm bridge interface ${bridge}"
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${rooter} ip link del ${bridge}
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}
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# detect the parametters
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for i in $@; do
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case "$i" in
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"-h" | "--help")
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echo "$Usage"
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exit 0
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;;
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"-v" | "--version")
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echo "$(basename $0) $Version"
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exit 0
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;;
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esac
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done
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# check if sudo is installed
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if which doas &> /dev/null
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then
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echo "use doas"
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rooter=$(which doas)
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elif which sudo &> /dev/null
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then
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echo "use sudo"
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rooter=$(which sudo)
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else
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echo "no command to give access to root is given. Abandon" >&2
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exit
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fi
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# detect the options
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for i in $@; do
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case "${i%=*}" in
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"--addbridge")
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bridge="${i#*=}"
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echo "${bridge}"
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add_bridge
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;;
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"--rmbridge")
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bridge="${i#*=}"
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echo "${bridge}"
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rm_bridge
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exit 0
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;;
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"--addr")
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address="${i#*=}"
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echo "${address}"
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;;
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"--replace")
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echo "--replace not yet supported, program stopped." >&2
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exit 1
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;;
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*)
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echo "parametter ${i%=*} not recognised" >&2
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exit 1
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;;
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esac
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done
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if [ "${bridge}" == "" ]
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then
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echo "Error, --bridge have to be specified to make the bridge" >&2
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exit
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fi
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if [ ! "${address}" == "" ]
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then
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${rooter} ip a add dev ${bridge} ${address}
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fi
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