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wg-quick: check permissions of parent directory

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Also prefix octal 0, in case these files are actually of modes that
don't start with 0 by accident (such as SUID or sticky bit).

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
This commit is contained in:
Jason A. Donenfeld 2017-10-01 22:05:19 +02:00
parent cbd2b0531f
commit 83caaa7a96
1 changed files with 1 additions and 1 deletions
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2
src/wg-quick.bash
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@ -30,7 +30,7 @@ parse_options() {
[[ $CONFIG_FILE =~ ^[a-zA-Z0-9_=+.-]{1,16}$ ]] && CONFIG_FILE="/etc/wireguard/$CONFIG_FILE.conf"
[[ -e $CONFIG_FILE ]] || die "\`$CONFIG_FILE' does not exist"
[[ $CONFIG_FILE =~ /?([a-zA-Z0-9_=+.-]{1,16})\.conf$ ]] || die "The config file must be a valid interface name, followed by .conf"
((($(stat -c '%#a' "$CONFIG_FILE") & 0007) == 0)) || echo "Warning: \`$CONFIG_FILE' is world accessible" >&2
((($(stat -c '0%#a' "$CONFIG_FILE") & $(stat -c '0%#a' "/etc/wireguard") & 0007) == 0)) || echo "Warning: \`$CONFIG_FILE' is world accessible" >&2
INTERFACE="${BASH_REMATCH[1]}"
shopt -s nocasematch
while read -r line || [[ -n $line ]]; do