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wg-quick: match from beginning rather than shift right 

Before, this meant that it simply took the last 15 characters, instead
of erroring out when there's more than 15 chars.

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
This commit is contained in:
Jason A. Donenfeld 2018-02-06 12:52:09 +01:00
parent 5be1ce2aab
commit 725258b9e3
1 changed files with 2 additions and 2 deletions
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4
src/wg-quick.bash
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@ -31,10 +31,10 @@ parse_options() {
CONFIG_FILE="$1"
[[ $CONFIG_FILE =~ ^[a-zA-Z0-9_=+.-]{1,15}$ ]] && CONFIG_FILE="/etc/wireguard/$CONFIG_FILE.conf"
[[ -e $CONFIG_FILE ]] || die "\`$CONFIG_FILE' does not exist"
[[ $CONFIG_FILE =~ /?([a-zA-Z0-9_=+.-]{1,15})\.conf$ ]] || die "The config file must be a valid interface name, followed by .conf"
[[ $CONFIG_FILE =~ (^|/)([a-zA-Z0-9_=+.-]{1,15})\.conf$ ]] || die "The config file must be a valid interface name, followed by .conf"
CONFIG_FILE="$(readlink -f "$CONFIG_FILE")"
((($(stat -c '0%#a' "$CONFIG_FILE") & $(stat -c '0%#a' "${CONFIG_FILE%/*}") & 0007) == 0)) || echo "Warning: \`$CONFIG_FILE' is world accessible" >&2
INTERFACE="${BASH_REMATCH[1]}"
INTERFACE="${BASH_REMATCH[2]}"
shopt -s nocasematch
while read -r line || [[ -n $line ]]; do
key="${line%%=*}"; key="${key##*([[:space:]])}"; key="${key%%*([[:space:]])}"