#!/bin/sh
#
# Copyright (c) 1999-2015 Parallels IP Holdings GmbH.
# All rights reserved.
# http://www.parallels.com

prl_executable=$(basename "${0}")
prl_base_dir=$(dirname "$(readlink "${0}" -f)")
if [ -n "${PRL_WRAPPER_LIBREPO}" ];
then
	prl_libs_dir="${PRL_WRAPPER_LIBREPO}"
else
	prl_libs_dir="${prl_base_dir}/libs"
fi
prl_ld_library_path=
prl_real_executable=${PRL_BIN_DIR:-$prl_base_dir}/${prl_executable}

# Determine libprl_sdk with maximum major version in library repo
prl_sdk_lib=$(ls "$prl_libs_dir" | grep '^libprl_sdk\.so\.[[:digit:]]\+' | sort -g -k3 -t. | tail -n1)

prl_binary_arch() {
	# Analyze ELF header.
	elf=$(od "${1}" -An -N 5 -t x1 2>/dev/null)
	if [ "x$elf" = "x 7f 45 4c 46 02" ];
	then
		echo "x86_64"
		return 0
	elif [ "x$elf" = "x 7f 45 4c 46 01" ];
	then
		echo "i386"
		return 0
	fi

	return 1
}


# Arguments:
# $1 - library to add
# $2 - target file architecture
# Return codes:
#  0 - success
#  1 - library not found in repo
#  2 - library in repo has different architecture
prl_add_lib() {
	local lib="${1}"
	local dir_to_append="${prl_libs_dir}/${lib}"
	test -d "$dir_to_append" || return 1
	local lib_arch="$(prl_binary_arch "${dir_to_append}/${lib}")"
	[ "x$lib_arch" = "x" ] && return 1
	test -n "${2}" && test "${2}" != "${lib_arch}" && return 2
	prl_ld_library_path="${dir_to_append}${prl_ld_library_path:+:$prl_ld_library_path}"
	return 0
}


prl_add_missing_libs() {
	target_arch=$(prl_binary_arch "${1}")
	while true;
	do
		missed_libs=$(\
			LANGUAGE=C \
			LANG=C \
			LD_LIBRARY_PATH="${prl_ld_library_path}${LD_LIBRARY_PATH:+:$LD_LIBRARY_PATH}" \
			ldd "${1}" 2>/dev/null | grep 'not found' | awk '{print $1}')
		[ "x${missed_libs}" = "x" ] && break
		missed_libs=$(echo "${missed_libs}" | sort -u)
		for lib in $missed_libs;
		do
			prl_add_lib "$lib" "$target_arch"
			rc=$?
			if [ $rc -ne 0 ]
			then
				error_msg="parallels wrapper: cannot resolve dependence on ${lib}"
				test $rc -eq 2 && error_msg="${error_msg} (different architecture of binaries)"
				echo "$error_msg"
				exit 13
			fi
		done
	done

}


prl_add_shipped_qt() {
		# Add shipped QT libs
		prl_add_lib 'libQtCore.so.4' 
		prl_add_lib 'libQtGui.so.4' 
		prl_add_lib 'libQtNetwork.so.4'
		prl_add_lib 'libQtOpenGL.so.4' 
		prl_add_lib 'libQtXml.so.4' 
}


# Add Parallels SDK
test -n "$prl_sdk_lib" && prl_add_lib "$prl_sdk_lib"

# Add GCC-related libraries to improve binary compatibility
prl_add_lib 'libgcc_s.so.1'
prl_add_lib 'libstdc++.so.6'

# for FC10
prl_add_lib 'libGL.so.1'

# for libQtNetwork.so.4 with ssl support
prl_add_lib 'libcrypto.so'
prl_add_lib 'libssl.so'

prl_add_lib 'libfontconfig.so.1'

prl_add_lib 'libxenserver.so.1'
prl_add_lib 'libcurl.so.3'

# To workaround binary incompatibility on RHEL 6.1
prl_add_lib 'libgthread-2.0.so.0'
prl_add_lib 'libglib-2.0.so.0'

test "x${PRL_USE_SHIPPED_QT:-yes}" = "xyes" && \
	prl_add_shipped_qt

test -n "$prl_sdk_lib" && prl_add_missing_libs "${prl_base_dir}/libs/${prl_sdk_lib}/${prl_sdk_lib}"
prl_add_missing_libs "${prl_real_executable}"

export PRL_WRAP_EXEC="${0}"
export PRL_LD_LIBRARY_PATH_PRESERVED=$LD_LIBRARY_PATH
LD_LIBRARY_PATH="${prl_ld_library_path}${LD_LIBRARY_PATH:+:$LD_LIBRARY_PATH}" exec "${prl_real_executable}" "$@"