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common: MAC now follows host prefix, and hashes jail+hostMAC for suffix

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tschettervictor
2025-01-13 13:59:55 -07:00
committed by GitHub
parent 131c89c6f8
commit 5345c2a599
1 changed files with 2 additions and 2 deletions
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4
usr/local/share/bastille/common.sh
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@@ -113,8 +113,8 @@ generate_static_mac() {
local jail_name="${1}"
local external_interface="${2}"
local external_interface_mac="$(ifconfig ${external_interface} | grep ether | awk '{print $2}' | sed 's#:##g')"
local macaddr_prefix="$(echo -n "${external_interface_mac}" | sha256 | cut -b -6 | sed 's/\([0-9a-fA-F][0-9a-fA-F]\)\([0-9a-fA-F][0-9a-fA-F]\)\([0-9a-fA-F]\)/\1:\2:\3/')"
local macaddr_suffix="$(echo -n "${jail_name}" | sha256 | cut -b -5 | sed 's/\([0-9a-fA-F][0-9a-fA-F]\)\([0-9a-fA-F][0-9a-fA-F]\)\([0-9a-fA-F]\)/\1:\2:\3/')"
local macaddr_prefix="$(echo ${external_interface_mac} | cut -d':' -f1-3)"
local macaddr_suffix="$(echo -n "${external_interface_mac}${jail_name}" | sed 's#:##g' | sha256 | cut -b -5 | sed 's/\([0-9a-fA-F][0-9a-fA-F]\)\([0-9a-fA-F][0-9a-fA-F]\)\([0-9a-fA-F]\)/\1:\2:\3/')"
if [ -z "${macaddr_prefix}" ] || [ -z "${macaddr_suffix}" ]; then
error_notify "Failed to generate MAC address."
fi