81 lines
2.2 KiB
Bash
Executable file
81 lines
2.2 KiB
Bash
Executable file
#!/bin/bash
|
|
# SPDX-License-Identifier: GPL-2.0
|
|
#
|
|
# Copyright (C) 2015-2020 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
|
|
# Copyright (C) 2017-2018 Peter Wu <peter@lekensteyn.nl>. All Rights Reserved.
|
|
|
|
set -e
|
|
|
|
ME_DIR="${BASH_SOURCE[0]}"
|
|
ME_DIR="${ME_DIR%/*}"
|
|
source "$ME_DIR/offsets.include" || { echo "Did you forget to run make?" >&2; exit 1; }
|
|
|
|
case "$(uname -m)" in
|
|
x86_64) ARGUMENT_REGISTER="%si" ;;
|
|
i386|i686) ARGUMENT_REGISTER="%dx" ;;
|
|
aarch64) ARGUMENT_REGISTER="%x1" ;;
|
|
arm) ARGUMENT_REGISTER="%r1" ;;
|
|
*) echo "ERROR: Unknown architecture" >&2; exit 1 ;;
|
|
esac
|
|
|
|
ARGS=( )
|
|
REGEX=".*: idxadd: .*"
|
|
for key in "${!OFFSETS[@]}"; do
|
|
values="${OFFSETS[$key]}"
|
|
values=( ${values//,/ } )
|
|
for i in {0..3}; do
|
|
value="$ARGUMENT_REGISTER"
|
|
for indirection in "${values[@]:1}"; do
|
|
value="+$indirection($value)"
|
|
done
|
|
value="+$((i * 8 + values[0]))($value)"
|
|
ARGS+=( "${key,,}$i=$value:x64" )
|
|
REGEX="$REGEX ${key,,}$i=0x([0-9a-f]+)"
|
|
done
|
|
done
|
|
|
|
turn_off() {
|
|
set +e
|
|
[[ -f /sys/kernel/debug/tracing/events/wireguard/idxadd/enable ]] || exit
|
|
echo 0 > /sys/kernel/debug/tracing/events/wireguard/idxadd/enable
|
|
echo "-:wireguard/idxadd" >> /sys/kernel/debug/tracing/kprobe_events
|
|
exit
|
|
}
|
|
|
|
trap turn_off INT TERM EXIT
|
|
echo "p:wireguard/idxadd index_hashtable_insert ${ARGS[*]}" >> /sys/kernel/debug/tracing/kprobe_events
|
|
echo 1 > /sys/kernel/debug/tracing/events/wireguard/idxadd/enable
|
|
|
|
unpack_u64() {
|
|
local i expanded="$1"
|
|
if [[ $ENDIAN == big ]]; then
|
|
printf -v expanded "%.*s$expanded" $((16 - ${#expanded})) 0000000000000000
|
|
for i in {0..7}; do
|
|
echo -n "\\x${expanded:(i * 2):2}"
|
|
done
|
|
elif [[ $ENDIAN == little ]]; then
|
|
(( ${#expanded} % 2 == 1 )) && expanded="0$expanded"
|
|
expanded="${expanded}0000000000000000"
|
|
for i in {0..7}; do
|
|
echo -n "\\x${expanded:((7 - i) * 2):2}"
|
|
done
|
|
else
|
|
echo "ERROR: Unable to determine endian" >&2
|
|
exit 1
|
|
fi
|
|
}
|
|
|
|
while read -r line; do
|
|
[[ $line =~ $REGEX ]] || continue
|
|
echo "New handshake session:"
|
|
j=1
|
|
for key in "${!OFFSETS[@]}"; do
|
|
bytes=""
|
|
for i in {0..3}; do
|
|
bytes="$bytes$(unpack_u64 "${BASH_REMATCH[j]}")"
|
|
((++j))
|
|
done
|
|
echo " $key = $(printf "$bytes" | base64)"
|
|
done
|
|
done < /sys/kernel/debug/tracing/trace_pipe
|