#!/bin/bash
#
# SPDX-License-Identifier: Apache-2.0
# Copyright (C) 2018 IBM Corp.

set -eou pipefail

if [ $# -lt 2 ]
then
	echo Usage: $0 [user@][host] [tarball]
	exit 1
fi

TARGET="$1"
DEBUGTOOLS_PATH="$2"
DEBUGTOOLS="$(basename "${DEBUGTOOLS_PATH}")"

scp "${DEBUGTOOLS_PATH}" libncurses.so.5.9 libncursesw.so.5.9 "${TARGET}":/tmp/
ssh "${TARGET}" <<-EOF
set -eou pipefail

set -x

on_exit() {
	rm -f /tmp/'${DEBUGTOOLS}'
	rm -f /tmp/libncurses.so.5.9 /tmp/libncursesw.so.5.9
}

trap on_exit EXIT

# Deal with field mode
if ! mountpoint /usr/local
then
	systemctl unmask usr-local.mount
	systemctl start usr-local.mount
fi

# Untar debug tools tarball into /usr/local
pushd /usr/local
tar -xvJf /tmp/"${DEBUGTOOLS}"
popd

# Work around bugs preventing perf from working
# Tracking issue: https://github.com/openbmc/openbmc/issues/2880

# Fake expand(1): https://github.com/openbmc/openbmc/issues/2879
mkdir -p bin
pushd /usr/local/bin
# which expand isn't enough as expand might be a symlink to a busybox not built with CONFIG_EXPAND
if ! echo "" | expand
then
	# Remove what is likely a symlink to busybox before trying to overwrite
	# file because:
	#
	# 1) We get errors through trying to write to a read-only filesystem
	# 2) If the filesystem were read-write, we would overwrite the busybox binary
	[ -f expand ] && rm expand
	# Fake out expand(1) in the cheapest way possible
	echo -e "#!/bin/sh\ncat" > expand
	chmod +x expand
fi

# Fix the broken objdump link: https://github.com/openbmc/openbmc/issues/2878
ln -sf arm-openbmc-linux-gnueabi-objdump objdump
popd

# perf-config(1) is terrible and won't write your configuration unless the
# configuration file exists
touch \${HOME}/.perfconfig

# Disable writing junk to \${HOME}, otherwise we fill up the RW volume and
# cause systemic failures.
LD_LIBRARY_PATH=/usr/local/lib /usr/local/bin/perf config --user buildid.dir=/dev/null

# Deal with latencytop's missing shared object dependency on ncurses, tracked by
# https://github.com/openbmc/openbmc/issues/2430
pushd /usr/local/lib
if [ -f /tmp/libncurses.so.5.9 -o -f /tmp/libncursesw.so.5.9 ]
then
	cp /tmp/libncurses.so.5.9 /tmp/libncursesw.so.5.9 .
	ln -sf libncurses.so.5.9 libncurses.so.5
	ln -sf libncurses.so.5.9 libncurses.so
	ln -sf libncursesw.so.5.9 libncursesw.so.5
	ln -sf libncursesw.so.5.9 libncursesw.so
fi
popd
EOF

echo
echo Make sure to run the following in your shell:
echo
echo export LD_LIBRARY_PATH=/usr/local/lib PYTHONPATH=/usr/local/lib/python2.7
echo