vpn_load () {
CFG="$TCONF/$1/tinc.conf"
- [ -f $CFG ] || { MSG="$CFG does not exist!"; return 1 }
+ [ -f $CFG ] || { MSG="$CFG does not exist!"; return 1; }
# load TINCD config
DEV="$(grep -i -e '^[[:space:]]*TapDevice' $CFG | sed 's/[[:space:]]//g; s/^.*=//g')"
# TapDevice syntax validation
[ -z "$DEV" ] && \
- { MSG="TapDevice required!"; return 1 }
+ { MSG="TapDevice required!"; return 1; }
[ $(echo $DEV | wc -l) -gt 1 ] && \
- { MSG="multiple TapDevice entries not allowed!"; return 1 }
+ { MSG="multiple TapDevice entries not allowed!"; return 1; }
echo $DEV | grep -q -x -E '/dev/tap[[:digit:]]+' ||
- { MSG="TapDevice should be in form /dev/tapX!"; return 1 }
+ { MSG="TapDevice should be in form /dev/tapX!"; return 1; }
# MyOwnVPNIP/MyVirtualIP syntax validation
[ -z "$VPN" ] && \
- { MSG="MyOwnVPNIP/MyVirtualIP required!"; return 1 }
+ { MSG="MyOwnVPNIP/MyVirtualIP required!"; return 1; }
[ $(echo $VPN | wc -l) -gt 1 ] && \
- { MSG="multiple MyOwnVPNIP/MyVirtualIP entries not allowed!"; return 1 }
+ { MSG="multiple MyOwnVPNIP/MyVirtualIP entries not allowed!"; return 1; }
echo $VPN | grep -q -x -E \
'([[:digit:]]{1,3}\.){3}[[:digit:]]{1,3}/[[:digit:]]{1,2}' || \
- { MSG="badly formed MyOwnVPNIP/MyVirtualIP address $VPN!"; return 1 }
+ { MSG="badly formed MyOwnVPNIP/MyVirtualIP address $VPN!"; return 1; }
# VPNMask syntax validation
[ $(echo $IFM | wc -l) -gt 1 ] && \
- { MSG="multiple VPNMask entries not allowed!"; return 1 }
+ { MSG="multiple VPNMask entries not allowed!"; return 1; }
# device & IP address extraction
NET=$(ipcalc --network $ADR $MSK | cut -d"=" -f2)
# MAC address
- MAC=$(printf "fe:fd:%0.2x:%0.2x:%0.2x:%0.2x" $(echo $ADR | { IFS=. ; read a b c d; echo $a $b $c $d }))
+ MAC=$(printf "fe:fd:%0.2x:%0.2x:%0.2x:%0.2x" $(echo $ADR | { IFS=. ; read a b c d; echo $a $b $c $d; }))
# debugging
# echo >&2
# load device module
ERR="$(insmod ethertap -o "ethertap$NUM" unit="$NUM" 2>&1 1> /dev/null)" ||
- { MSG="could not insmod ethertap as unit $NUM!"; return 2 }
+ { MSG="could not insmod ethertap as unit $NUM!"; return 2; }
# configure the interface
ERR="$(ip link set $TAP address $MAC 2>&1)" ||
- { MSG="could not set address for device $TAP!"; return 3 }
+ { MSG="could not set address for device $TAP!"; return 3; }
ERR="$(ip link set $TAP up 2>&1)" ||
- { MSG="could not bring up device $TAP!"; return 3 }
+ { MSG="could not bring up device $TAP!"; return 3; }
ERR="$(ip addr add $VPN brd $BRD dev $TAP 2>&1)" ||
- { MSG="could not set IP address for device $TAP!"; return 3 }
+ { MSG="could not set IP address for device $TAP!"; return 3; }
# start tincd
$TINCD --net="$1" $DEBUG || \
- { MSG="could not start daemon for network $1"; return 3 }
+ { MSG="could not start daemon for network $1"; return 3; }
# setup custom static routes
/etc/sysconfig/network-scripts/ifup-routes $TAP