#!/bin/bash
# SPDX-License-Identifier: LGPL-2.1-only

if [ "x${UST_TESTS_SRCDIR:-}" != "x" ]; then
	UTILSSH="$UST_TESTS_SRCDIR/utils/utils.sh"
else
	UTILSSH="$(dirname "$0")/../../utils/utils.sh"
fi

# shellcheck source=../../utils/utils.sh
source "$UTILSSH"

# shellcheck source=../../utils/tap.sh
source "$UST_TESTS_SRCDIR/utils/tap.sh"

CURDIR="${UST_TESTS_BUILDDIR}/regression/abi0-conflict"

LIBFAKEUST0_PATH="${CURDIR}/.libs"
LIBFAKEUST0="${LIBFAKEUST0_PATH}/libfakeust0.so"

LIBUST1_PATH="${UST_TESTS_BUILDDIR}/../src/lib/lttng-ust/.libs/"
LIBUST1="${LIBUST1_PATH}/liblttng-ust.so.1"

STD_OUTPUT="/dev/null"
STD_ERROR="/dev/null"

NUM_TESTS=22

# Set this variable to disable tests that rely on a library using a symbol from
# the global offset table even if it provides its own copy, which is the
# default behavior on Linux. This happens when using the '-Bsymbolic-functions'
# linker flag.
UST_TESTS_LD_SYMBOLIC_FUNC=${UST_TESTS_LD_SYMBOLIC_FUNC:-}

# On FreeBSD, symbol resolution when dlopening a shared object will always
# favor symbols local to this shared object and thus our canary function will
# never be called which breaks our abi conflict detection when abi1 is loaded
# first.
if [ "$UST_OS_TYPE" = "freebsd" ]; then
	UST_TESTS_LD_SYMBOLIC_FUNC=1
fi

if [ "$UST_TESTS_LD_SYMBOLIC_FUNC" != "" ]; then
	NUM_TESTS=$((NUM_TESTS - 4))
fi

# Force abort on CRIT() to detect ABI conflicts
export LTTNG_UST_ABORT_ON_CRITICAL=1

plan_tests $NUM_TESTS

###
##  LD_PRELOAD tests
###

diag "LD_PRELOAD"

## App NOT linked on liblttng-ust

"${CURDIR}/app_noust" >"$STD_OUTPUT" 2>"$STD_ERROR"
ok $? "LD_PRELOAD: no-ust app works"

LD_PRELOAD="${LIBFAKEUST0}" "${CURDIR}/app_noust" >"$STD_OUTPUT" 2>"$STD_ERROR"
ok $? "LD_PRELOAD: no-ust app with abi0 preload succeeds"

LD_PRELOAD="${LIBFAKEUST0}:${LIBUST1}" "${CURDIR}/app_noust" >"$STD_OUTPUT" 2>"$STD_ERROR"
isnt $? 0 "LD_PRELOAD: no-ust app with abi0 and abi1 preload fails"

LD_PRELOAD="${LIBUST1}:${LIBFAKEUST0}" "${CURDIR}/app_noust" >"$STD_OUTPUT" 2>"$STD_ERROR"
isnt $? 0 "LD_PRELOAD: no-ust app with abi1 and abi0 preload fails"


## App linked on liblttng-ust.so.1

"${CURDIR}/app_ust" >"$STD_OUTPUT" 2>"$STD_ERROR"
ok $? "LD_PRELOAD: ust app works"

LD_PRELOAD="${LIBFAKEUST0}" "${CURDIR}/app_ust" >"$STD_OUTPUT" 2>"$STD_ERROR"
isnt $? 0 "LD_PRELOAD: ust app with abi0 preload fails"

LD_PRELOAD="${LIBFAKEUST0}:${LIBUST1}" "${CURDIR}/app_ust" >"$STD_OUTPUT" 2>"$STD_ERROR"
isnt $? 0 "LD_PRELOAD: ust app with abi0 and abi1 preload fails"

LD_PRELOAD="${LIBUST1}:${LIBFAKEUST0}" "${CURDIR}/app_ust" >"$STD_OUTPUT" 2>"$STD_ERROR"
isnt $? 0 "LD_PRELOAD: ust app with abi1 and abi0 preload fails"


###
## dlopen tests
###

diag "dlopen"

## App NOT linked on liblttng-ust

LD_LIBRARY_PATH="$LIBFAKEUST0_PATH:$LIBUST1_PATH" "${CURDIR}/app_noust_dlopen" abi0 >"$STD_OUTPUT" 2>"$STD_ERROR"
ok $? "dlopen: no-ust app works"

LD_LIBRARY_PATH="$LIBFAKEUST0_PATH:$LIBUST1_PATH" "${CURDIR}/app_noust_dlopen" abi1_abi1 >"$STD_OUTPUT" 2>"$STD_ERROR"
ok $? "dlopen: no-ust app with abi1 and abi1 succeeds"

LD_LIBRARY_PATH="$LIBFAKEUST0_PATH:$LIBUST1_PATH" "${CURDIR}/app_noust_dlopen" abi0_abi1 >"$STD_OUTPUT" 2>"$STD_ERROR"
isnt $? 0 "dlopen: no-ust app with abi0 and abi1 fails"

if [ "$UST_TESTS_LD_SYMBOLIC_FUNC" = "" ]; then
    LD_LIBRARY_PATH="$LIBFAKEUST0_PATH:$LIBUST1_PATH" "${CURDIR}/app_noust_dlopen" abi1_abi0 >"$STD_OUTPUT" 2>"$STD_ERROR"
    isnt $? 0 "dlopen: no-ust app with abi1 and abi0 fails"
fi

## App linked on liblttng-ust.so.1

LD_LIBRARY_PATH="$LIBFAKEUST0_PATH:$LIBUST1_PATH" "${CURDIR}/app_ust_dlopen" abi1 >"$STD_OUTPUT" 2>"$STD_ERROR"
ok $? "dlopen: ust app works"

if [ "$UST_TESTS_LD_SYMBOLIC_FUNC" = "" ]; then
    LD_LIBRARY_PATH="$LIBFAKEUST0_PATH:$LIBUST1_PATH" "${CURDIR}/app_ust_dlopen" abi0 >"$STD_OUTPUT" 2>"$STD_ERROR"
    isnt $? 0 "dlopen: ust app with abi0 fails"

    LD_LIBRARY_PATH="$LIBFAKEUST0_PATH:$LIBUST1_PATH" "${CURDIR}/app_ust_dlopen" abi0_abi1 >"$STD_OUTPUT" 2>"$STD_ERROR"
    isnt $? 0 "dlopen: ust app with abi0 and abi1 fails"

    LD_LIBRARY_PATH="$LIBFAKEUST0_PATH:$LIBUST1_PATH" "${CURDIR}/app_ust_dlopen" abi1_abi0 >"$STD_OUTPUT" 2>"$STD_ERROR"
    isnt $? 0 "dlopen: ust app with abi1 and abi0 fails"
fi


###
##  Indirect linking
###

diag "Indirect linking"

## App NOT linked on liblttng-ust

"${CURDIR}/app_noust_indirect_abi0" >"$STD_OUTPUT" 2>"$STD_ERROR"
ok $? "indirect: no-ust app with abi0 succeeds"

"${CURDIR}/app_noust_indirect_abi1" >"$STD_OUTPUT" 2>"$STD_ERROR"
ok $? "indirect: no-ust app with abi1 succeeds"

"${CURDIR}/app_noust_indirect_abi0_abi1" >"$STD_OUTPUT" 2>"$STD_ERROR"
isnt $? 0 "indirect: no-ust app with abi0 and abi1 fails"

## App linked on liblttng-ust

"${CURDIR}/app_ust_indirect_abi0" >"$STD_OUTPUT" 2>"$STD_ERROR"
isnt $? 0 "indirect: ust app with abi0 fails"

"${CURDIR}/app_ust_indirect_abi1" >"$STD_OUTPUT" 2>"$STD_ERROR"
ok $? "indirect: ust app with abi1 succeeds"

"${CURDIR}/app_ust_indirect_abi0_abi1" >"$STD_OUTPUT" 2>"$STD_ERROR"
isnt $? 0 "indirect: ust app with abi0 and abi1 fails"