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#! /bin/bash
. /usr/lib/network/globals
## Check if a string represents a network interface
# $1: potential interface name
is_interface() {
# Strip any old school alias specifier
[[ -d "/sys/class/net/${1%%:?*}" ]]
}
## Add an interface
# $1: interface type
# $2: interface name
# $3: interface link (optional)
# $4...: additional arguments
interface_add() {
local type="$1" name="$2" link="$3"
shift 3
ip link add ${link:+link "$link"} name "$name" type "$type" "$@" || return
if [[ -x "$PROFILE_DIR/interfaces/$name" ]]; then
source "$PROFILE_DIR/interfaces/$name"
fi
}
## Delete an interface
# $1: interface name
interface_delete() {
bring_interface_down "$1"
ip link delete "$1"
}
## Check if an interface is up
# $1: interface name
interface_is_up() {
local flags
read flags < "/sys/class/net/${1%%:?*}/flags"
# IFF_UP is defined as 0x1 in linux/if.h
(( flags & 0x1 ))
}
## Activate an interface
# $1: interface name
bring_interface_up() {
local interface=$1
ip link set dev "$interface" up &>/dev/null
timeout_wait "${TimeoutUp:-5}" 'interface_is_up "$interface"'
}
## Deactivate an interface
# $1: interface name
bring_interface_down() {
local interface=$1
ip link set dev "$interface" down &>/dev/null
# We reuse the up timeout (down normally is faster)
timeout_wait "${TimeoutUp:-5}" '! interface_is_up "$interface"'
}
if [[ $# -ne 2 || $1 != @(start|stop) ]]; then
exit_error "Usage: $0 {start|stop} <profile>"
fi
ensure_root netctl
# Ensure we are not in a transient directory
cd /
# Expose the profile name
Profile=$2
load_profile "$Profile"
case $1 in
start)
report_notice "Starting network profile '$Profile'..."
if is_interface "$Interface" && interface_is_up "$Interface" && \
! is_yes "${ForceConnect:-no}"; then
report_error "The interface of network profile '$Profile' is already up"
exit 1
fi
if ! "${Connection}_up"; then
report_error "Failed to bring the network up for profile '$Profile'"
exit 1
fi
# JP: sandbox the eval
if ! ( eval $ExecUpPost ); then
report_error "ExecUpPost failed for network profile '$Profile'"
# Failing ExecUpPost will take the connection down
"${Connection}_down"
exit 1
fi
report_notice "Started network profile '$Profile'"
;;
stop)
report_notice "Stopping network profile '$Profile'..."
# JP: sandbox the eval
if ! ( eval $ExecDownPre ); then
report_error "ExecDownPre failed for network profile '$Profile'"
# Failing ExecDownPre will leave the profile active
exit 1
fi
if ! "${Connection}_down"; then
report_error "Failed to bring the network down for profile '$Profile'"
exit 1
fi
if is_interface "$Interface" && interface_is_up "$Interface" && \
! is_yes "${ForceConnect:-no}"; then
report_error "The interface of network profile '$Profile' did not go down"
exit 1
fi
report_notice "Stopped network profile '$Profile'"
;;
esac
# vim: ft=sh ts=4 et sw=4:
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