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| author | Mikhail Zhilkin <csharper2005@gmail.com> | 2022-07-12 14:52:04 +0000 |
|---|---|---|
| committer | Christian Marangi <ansuelsmth@gmail.com> | 2022-08-19 14:41:14 +0200 |
| commit | 12c971bc26ac0ff04257bc475fff6fa68068c6c0 (patch) | |
| tree | db120dce89aa8683a5247a30065a3cf30c7f3bd2 | |
| parent | 9c8605dee238cdf52e88b6a1aa64d5b7bf5dd846 (diff) | |
| download | openwrt-12c971bc26ac0ff04257bc475fff6fa68068c6c0.tar.gz openwrt-12c971bc26ac0ff04257bc475fff6fa68068c6c0.tar.bz2 openwrt-12c971bc26ac0ff04257bc475fff6fa68068c6c0.zip | |
base-files: add mtd_get_mac_encrypted_arcadyan function
Some Arcadyan devices (e.g. MTS WG430223) keep their config in encrypted
mtd. This adds mtd_get_mac_encrypted_arcadyan() function to get the MAC
address from the encrypted partition. Function uses uencrypt utility for
decryption (and openssl if the uencrypt wasn't found).
Signed-off-by: Mikhail Zhilkin <csharper2005@gmail.com>
| -rw-r--r-- | package/base-files/files/lib/functions/system.sh | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/package/base-files/files/lib/functions/system.sh b/package/base-files/files/lib/functions/system.sh index 0ac2912014..c17354d945 100644 --- a/package/base-files/files/lib/functions/system.sh +++ b/package/base-files/files/lib/functions/system.sh @@ -79,6 +79,37 @@ mtd_get_mac_ascii() { [ -n "$mac_dirty" ] && macaddr_canonicalize "$mac_dirty" } +mtd_get_mac_encrypted_arcadyan() { + local iv="00000000000000000000000000000000" + local key="2A4B303D7644395C3B2B7053553C5200" + local mac_dirty + local mtdname="$1" + local part + local size + + part=$(find_mtd_part "$mtdname") + if [ -z "$part" ]; then + echo "mtd_get_mac_encrypted_arcadyan: partition $mtdname not found!" >&2 + return + fi + + # Config decryption and getting mac. Trying uencrypt and openssl utils. + size=$((0x$(dd if=$part skip=9 bs=1 count=4 2>/dev/null | hexdump -v -e '1/4 "%08x"'))) + if [[ -f "/usr/bin/uencrypt" ]]; then + mac_dirty=$(dd if=$part bs=1 count=$size skip=$((0x100)) 2>/dev/null | \ + uencrypt -d -n -k $key -i $iv | grep mac | cut -c 5-) + elif [[ -f "/usr/bin/openssl" ]]; then + mac_dirty=$(dd if=$part bs=1 count=$size skip=$((0x100)) 2>/dev/null | \ + openssl aes-128-cbc -d -nopad -K $key -iv $iv | grep mac | cut -c 5-) + else + echo "mtd_get_mac_encrypted_arcadyan: Neither uencrypt nor openssl was found!" >&2 + return + fi + + # "canonicalize" mac + [ -n "$mac_dirty" ] && macaddr_canonicalize "$mac_dirty" +} + mtd_get_mac_text() { local mtdname=$1 local offset=$(($2)) |