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#!/bin/bash
# Common function for test
# Expect should be installed for SSH Testing
# To execute `runqemu`, NOPASSWD needs to be set in /etc/sudoers for user
# For example, for user "builder", /etc/sudoers can be like following:
# #########
# #Members of the admin group may gain root privileges
# %builder ALL=(ALL) NOPASSWD: NOPASSWD: ALL
# #########
#
# Author: Jiajun Xu <jiajun.xu@intel.com>
#
# This file is licensed under the GNU General Public License,
# Version 2.
#

TYPE="ext3"

# The folder to hold all scripts running on targets
TOOLS="$COREBASE/scripts/qemuimage-tests/tools"

# The folder to hold all projects for toolchain testing
TOOLCHAIN_PROJECTS="$COREBASE/scripts/qemuimage-tests/toolchain_projects"

# Test Directory on target for testing
TARGET_TEST_DIR="/opt/test"

# Global variables for process id
XTERMPID=0
QEMUPID=0

# Global variable for target ip address
TARGET_IPADDR=0

# Global variable for test project version during toolchain test
# Version of cvs is 1.12.13
# Version of iptables is 1.4.11
# Version of sudoku-savant is 1.3
PROJECT_PV=0

# Global variable for test project download URL during toolchain test
# URL of cvs is http://ftp.gnu.org/non-gnu/cvs/source/feature/1.12.13/cvs-1.12.13.tar.bz2
# URL of iptables is http://netfilter.org/projects/iptables/files/iptables-1.4.11.tar.bz2
# URL of sudoku-savant is http://downloads.sourceforge.net/project/sudoku-savant/sudoku-savant/sudoku-savant-1.3/sudoku-savant-1.3.tar.bz2
PROJECT_DOWNLOAD_URL=0

# SDK folder to hold toolchain tarball
TOOLCHAIN_DIR="${DEPLOY_DIR}/sdk"

# Toolchain test folder to hold extracted toolchain tarball
TOOLCHAIN_TEST="/opt"

# common function for information print
Test_Error()
{
	echo -e "\tTest_Error: $*"
}

Test_Info()
{
	echo -e "\tTest_Info: $*"
}

# function to update target ip address
# $1 is the process id of the process, which starts the qemu target
# $2 is the ip address of the target
Test_Update_IPSAVE()
{
	local pid=$1
	local ip_addr=$2

	if [ "$TEST_SERIALIZE" -eq 1 -a "$pid" != "0" -a "$pid" != "" -a "$ip_addr" != "" -a "$ip_addr" != "" ]; then
		echo "Saving $pid $ip_addr to $TARGET_IPSAVE"
		echo "$pid $ip_addr" > $TARGET_IPSAVE
	fi
}

# function to copy files from host into target
# $1 is the ip address of target
# $2 is the files, which need to be copied into target
# $3 is the path on target, where files are copied into
Test_SCP()
{
	local ip_addr=$1
	local src=$2
	local des=$3
	local tmpfile=`mktemp`
	local time_out=60
	local ret=0

	# We use expect to interactive with target by ssh
	local exp_cmd=`cat << EOF
eval spawn scp -o UserKnownHostsFile=$tmpfile "$src" root@$ip_addr:"$des"
set timeout $time_out
expect {
    "*assword:" { send "\r"; exp_continue}
    "*(yes/no)?" { send "yes\r"; exp_continue }
    eof          { exit [ lindex [wait] 3 ] }
}
EOF`

	expect=`which expect`
	if [ ! -x "$expect" ]; then
		Test_Error "ERROR: Please install expect"
		return 1
	fi

	expect -c "$exp_cmd"
	ret=$?
	rm -rf $tmpfile
	return $ret
}

# function to run command in $ip_addr via ssh
Test_SSH()
{
	local ip_addr=$1
	shift
	local command=$@
	local tmpfile=`mktemp`
	local time_out=60
	local ret=0
	local exp_cmd=`cat << EOF
eval spawn ssh -o UserKnownHostsFile=$tmpfile root@$ip_addr "$command"
set timeout $time_out
expect {
    "*assword:" { send "\r"; exp_continue}
    "*(yes/no)?" { send "yes\r"; exp_continue }
    eof          { exit [ lindex [wait] 3 ] }
}
EOF`

	expect=`which expect`
	if [ ! -x "$expect" ]; then
		Test_Error "ERROR: Please install expect"
		return 1
	fi

	expect -c "$exp_cmd"
	ret=$?
	rm -rf $tmpfile
	return $ret
}

# function to check if ssh is up in $ip_addr
Test_SSH_UP()
{
	local ip_addr=$1
	local timeout=$2
	local interval=0

	# If TEST_SERIALIZE is set, use existing running qemu for testing
	if [ ${TEST_SERIALIZE} -eq 1 -a -e ${TARGET_IPSAVE} ]; then
		timeout=50
	fi

	while [ ${interval} -lt ${timeout} ]
	do
		Test_SSH ${ip_addr} "hostname"
		if [ $? -ne 0 ]; then
			interval=`expr $interval + 10`
			sleep 10
		else
			Test_Info "We can ssh on ${ip_addr} within ${interval} seconds"
			return 0
		fi

	done

	Test_Info "We can not ssh on ${ip_addr} in ${timeout} seconds"
	return 1
}

# function to prepare target test environment
# $1 is the ip address of target system
# $2 is the files, which needs to be copied into target
Test_Target_Pre()
{
	local ip_addr=$1
	local testscript=$2

	# Create a pre-defined folder for test scripts
	Test_SSH $ip_addr "mkdir -p $TARGET_TEST_DIR"
	if [ $? -eq 0 ]; then
		# Copy test scripts into target
		Test_SCP $ip_addr $testscript $TARGET_TEST_DIR && return 0
	else
		Test_Error "Fail to create $TARGET_TEST_DIR on target"
		return 1
	fi

	return 1
}

# function to record test result in $TEST_RESULT/testresult.log
Test_Print_Result()
{
	local PASS=0
	local FAIL=0
	local NORESULT=0
	if [ $2 -eq 0 ]; then
		PASS=1
	elif [ $2 -eq 1 ]; then
		FAIL=1
	else
		NORESULT=1
	fi

	# Format the output of the test result
	echo -e "$1 $PASS $FAIL $NORESULT" | awk '{printf("\t"); for(i=1;i<=NF;i++) printf("%-15s",$i); printf("\n");}' >> $TEST_RESULT/testresult.log
}

# Test_Kill_Qemu to kill child pid with parent pid given
# $1 is qemu process id, which needs to be killed
Test_Kill_Qemu()
{
	local index=0
	local total=0
	local k=0

	# When TEST_SERIALIZE is set, qemu process will not be
	# killed until all the cases are finished
	if [ ${TEST_SERIALIZE} -eq 1 -a -e ${TEST_STATUS} ]; then
		index=`sed -n 2p ${TEST_STATUS} | awk '{print $3}'`
		total=`sed -n 2p ${TEST_STATUS} | awk '{print $4}'`
		if [ ${index} != ${total} ]; then
			Test_Info "Do not kill the qemu process and use it for later testing (step $index of $total)"
			Test_Update_IPSAVE $XTERMPID $TARGET_IPADDR
		else
			k=1
		fi
	else
		k=1
	fi

	if [ $k -eq 1 ]; then
		if [ "$QEMUPID" != "0" -a "$QEMUPID" != "" ]; then
			running=`ps -wwfp $QEMUPID`
			if [ $? -eq 0 ]; then
				echo "killing $QEMUPID"
				kill $QEMUPID
			fi
		fi
		if [ "$XTERMPID" != "0" -a "$XTERMPID" != "" ]; then
			running=`ps -wwfp $XTERMPID`
			if [ $? -eq 0 ]; then
				echo "killing $XTERMPID"
				kill $XTERMPID
			fi
		fi
	fi

	return
}

# function to check if network is up
Test_Check_IP_UP()
{
	ping -c1 $1 1> /dev/null
	if [ $? -ne 0 ]; then
		Test_Info "IP $1 is not up"
		return 1
	else
		Test_Info "IP $1 is up"
		return 0
	fi
}

# function to find kernel/rootfs image
Test_Find_Image()
{
	where=""
	kernel=""
	arch=""
	target=""
	extension=""
	rootfs=""

	while getopts "l:k:a:t:" Option
	do
		case $Option in
			l) where="$OPTARG"
			   ;;
			k) kernel="$OPTARG"
			   extension="bin"
			   ;;
			a) arch="$OPTARG"
			   ;;
			t) target="$OPTARG"
			   extension="ext3"
			   ;;
			*) echo "invalid option: -$Option" && return 1
			   ;;
		 esac
	done

	if [ ! -z $kernel ]; then
		if [ -L ${where}/${kernel}-${arch}.${extension} ]; then
			echo ${where}/${kernel}-${arch}.${extension}
			return 0
		else
			for i in `dir ${where}`
			do
				# Exclude qemux86-64 when target is qemux86
				echo $i | grep "${kernel}.*${arch}.*\.${extension}" | grep -qv "${kernel}.*${arch}-64.*\.${extension}"
				if [ $? -eq 0 ]; then
					echo ${where}/${i}
					return 0
				fi
			done
			return 1
		fi
	fi

	if [ ! -z $target ]; then
		if [ -L ${where}/${target}-${arch}.${extension} ]; then
			rootfs=`readlink -f ${where}/${target}-${arch}.${extension}`
			echo ${rootfs}
			return 0
		else
			for i in `dir ${where}`
			do
				# Exclude qemux86-64 when target is qemux86
				echo $i | grep "${target}-${arch}.*\.${extension}" | grep -qv "${target}-${arch}-64.*\.${extension}"
				if [ $? -eq 0 ]; then
					echo ${where}/${i}
					return 0
				fi
			done
			return 1
		fi
	fi
	return 1
}

# function to parse IP address of target
# $1 is the pid of qemu startup process
Test_Fetch_Target_IP()
{
	local opid=$1
	local ip_addr=0

	if [ "$opid" = "0" -o "$opid" = "" ]; then
		echo ""
		return
	fi

	# Check if $1 pid exists and contains ipaddr of target
	ip_addr=`ps -wwfp $opid | grep -o "192\.168\.7\.[0-9]*::" | awk -F":" '{print $1}'`

	echo $ip_addr

	return
}

# function to check if qemu and its network
Test_Create_Qemu()
{
	local timeout=$1
	local up_time=0

	RUNQEMU=`which runqemu`
	if [ $? -ne 0 ]; then
		Test_Error "Can not find runqemu in \$PATH, return fail"
		return 1
	fi
	
	if [ "$QEMUARCH" = "qemux86" -o "$QEMUARCH" = "qemux86-64" ]; then
		KERNEL=$(Test_Find_Image -l ${DEPLOY_DIR}/images -k bzImage -a ${QEMUARCH})
	elif [ "$QEMUARCH" = "qemuarm" -o "$QEMUARCH" = "spitz" -o "$QEMUARCH" = "borzoi" -o "$QEMUARCH" = "akita" -o "$QEMUARCH" = "nokia800" ]; then
		KERNEL=$(Test_Find_Image -l ${DEPLOY_DIR}/images -k zImage -a ${QEMUARCH})
	elif [ "$QEMUARCH" = "qemumips" -o "$QEMUARCH" = "qemuppc" ]; then
		KERNEL=$(Test_Find_Image -l ${DEPLOY_DIR}/images -k vmlinux -a ${QEMUARCH})
	fi

	# If there is no kernel image found, return failed directly
	if [ $? -eq 1 ]; then
		Test_Info "No kernel image file found under ${DEPLOY_DIR}/images for ${QEMUARCH}, pls. have a check"
		return 1
	fi
	
	ROOTFS_IMAGE=$(Test_Find_Image -l ${DEPLOY_DIR}/images -t ${QEMUTARGET} -a ${QEMUARCH})

	# If there is no rootfs image found, return failed directly
	if [ $? -eq 1 ]; then
		Test_Info "No ${QEMUTARGET} rootfs image file found under ${DEPLOY_DIR}/images for ${QEMUARCH}, pls. have a check"
		return 1
	fi

	TEST_ROOTFS_IMAGE="${TEST_TMP}/${QEMUTARGET}-${QEMUARCH}-test.ext3"
	
	CP=`which cp`

	# When TEST_SERIALIZE is set, we use the existing image under tmp folder
	if [ ${TEST_SERIALIZE} -eq 1 -a -e "$TARGET_IPSAVE" ]; then
		# If TARGET_IPSAVE exists, check PID of the qemu process from it
		XTERMPID=`awk '{print $1}' $TARGET_IPSAVE`
		timeout=50
	else
		rm -rf $TEST_ROOTFS_IMAGE
		echo "Copying rootfs $ROOTFS_IMAGE to $TEST_ROOTFS_IMAGE"
		$CP $ROOTFS_IMAGE $TEST_ROOTFS_IMAGE
		if [ $? -ne 0 ]; then
			Test_Info "Image ${ROOTFS_IMAGE} copy to ${TEST_ROOTFS_IMAGE} failed, return fail"
			return 1
		fi

		export MACHINE=$QEMUARCH

		# Create Qemu in localhost VNC Port 1
		echo "Running xterm -display ${DISPLAY} -e 'OE_TMPDIR=${OE_TMPDIR} ${RUNQEMU} ${KERNEL} ${TEST_ROOTFS_IMAGE} 2>&1 | tee ${RUNQEMU_LOGFILE} || /bin/sleep 60' &"
		xterm -display ${DISPLAY} -e "OE_TMPDIR=${OE_TMPDIR} ${RUNQEMU} ${KERNEL} ${TEST_ROOTFS_IMAGE} 2>&1 | tee ${RUNQEMU_LOGFILE} || /bin/sleep 60" &
	
		# Get the pid of the xterm processor, which will be used in Test_Kill_Qemu
		XTERMPID=$!
		echo "XTERMPID is $XTERMPID"
		# When starting, qemu can reexecute itself and change PID so wait a short while for things to settle
		sleep 5
	fi

	while [ ${up_time} -lt 30 ]
	do
		QEMUPID=`qemuimage-testlib-pythonhelper --findqemu $XTERMPID 2>/dev/null`
		if [ $? -ne 0 ]; then
			Test_Info "Wait for qemu up..."
			up_time=`expr $up_time + 5`
			sleep 5
		else
			Test_Info "Begin to check if qemu network is up"
			echo "QEMUPID is $QEMUPID"
			break
		fi
	done

	if [ ${up_time} == 30 ]; then
		Test_Info "No qemu process appeared to start, exiting"
		ps axww -O ppid
		Test_Info "Process list dumped for debugging purposes"
		Test_Info "runqemu output log:"
		cat ${RUNQEMU_LOGFILE}
		echo
		return 1
	fi

	up_time=0
	# Parse IP address of target from the qemu command line
	TARGET_IPADDR=`Test_Fetch_Target_IP $QEMUPID`
	echo "Target IP is ${TARGET_IPADDR}"
	if [ "${TARGET_IPADDR}" = "" -o "${TARGET_IPADDR}" = "0" ]; then
		Test_Info "There is no qemu process or qemu ip address found, return failed"
		ps -wwf
		ps axww -O ppid
		Test_Info "runqemu output log:"
		cat ${RUNQEMU_LOGFILE}
		echo
		return 1
	fi

	while [ ${up_time} -lt ${timeout} ]
	do
		Test_Check_IP_UP ${TARGET_IPADDR}
		if [ $? -eq 0 ]; then
			Test_Info "Qemu Network is up, ping with ${TARGET_IPADDR} is OK within ${up_time} seconds"
			return 0
		else
			Test_Info "Wait for Qemu Network up"
			up_time=`expr $up_time + 5`
			sleep 5
		fi
	done

	Test_Info "Process list dumped for debugging purposes:"
	ps axww -O ppid
	Test_Info "runqemu output log:"
	cat ${RUNQEMU_LOGFILE}
	Test_Info "Qemu or its network is not up in ${timeout} seconds"
	Test_Update_IPSAVE $XTERMPID $TARGET_IPADDR
	return 1
}

# Function to prepare test project for toolchain test
# $1 is the folder holding test project file
# $2 is the test project name
Test_Project_Prepare()
{
	local toolchain_dir=$1

	if [ ! -d ${toolchain_dir} ]; then
		mkdir -p ${toolchain_dir}
		if [ $? -ne 0 ]; then
			ret=$?
			Test_Info "Create ${toolchain_dir} fail, return"
			return $ret
		fi
	fi

	# Download test project tarball if it does not exist
	if [ ! -f ${toolchain_dir}/${2}-${PROJECT_PV}.${suffix} ]; then
		wget -c -t 5 $PROJECT_DOWNLOAD_URL -O ${toolchain_dir}/${2}-${PROJECT_PV}.${suffix}
		if [ $? -ne 0 ]; then
			ret=$?
			Test_Info "Fail to download ${2}-${PROJECT_PV}.${suffix} from $PROJECT_DOWNLOAD_URL"
			rm -rf ${toolchain_dir}/${2}-${PROJECT_PV}.${suffix}
			return $ret
		fi
	fi

	# Extract the test project into ${TEST_TMP}
	tar jxf ${toolchain_dir}/${2}-${PROJECT_PV}.${suffix} -C ${TEST_TMP}
	if [ $? -ne 0 ]; then
		ret=$?
		Test_Info "Fail to extract ${2}-${PROJECT_PV}.${suffix} into ${TEST_TMP}"
		return $ret
	fi
	Test_Info "Extract ${2}-${PROJECT_PV}.${suffix} into ${TEST_TMP} successfully"
	return 0
}

# Function to prepare toolchain environment
# $1 is toolchain directory to hold toolchain tarball
# $2 is prefix name for toolchain tarball
Test_Toolchain_Prepare()
{
	local toolchain_dir=$1
	local sdk_name=$2
	local ret=1

	if [ ! -d ${toolchain_dir} ]; then
		Test_Info "No directory ${toolchain_dir}, which holds toolchain tarballs"
		return 1
	fi

	# Check if there is any toolchain tarball under $toolchain_dir with prefix $sdk_name
	for i in `dir ${toolchain_dir}`
	do
		echo $i | grep "${sdk_name}-toolchain-gmae"
		if [ $? -eq 0 ]; then
			rm -rf ${TEST_TMP}/opt
			tar jxf ${toolchain_dir}/${i} -C ${TEST_TMP}
			ret=$?
			break
		fi
	done

	if [ $ret -eq 0 ]; then
		Test_Info "Check if /opt is accessible for non-root user"

		# Check if the non-root test user has write access of $TOOLCHAIN_TEST
		if [ -d ${TOOLCHAIN_TEST} ]; then
			touch ${TOOLCHAIN_TEST}
			if [ $? -ne 0 ]; then
				Test_Info "Has no right to modify folder $TOOLCHAIN_TEST, pls. chown it to test user"
				return 2
			fi
		else
			mkdir -p ${TOOLCHAIN_TEST}
			if [ $? -ne 0 ]; then
				Test_Info "Has no right to create folder $TOOLCHAIN_TEST, pls. create it and chown it to test user"
				return 2
			fi
		fi

		# If there is a toolchain folder under $TOOLCHAIN_TEST, let's remove it
		if [ -d ${TOOLCHAIN_TEST}/poky ]; then
			rm -rf ${TOOLCHAIN_TEST}/poky
		fi

		# Copy toolchain into $TOOLCHAIN_TEST
		cp -r ${TEST_TMP}/opt/poky ${TOOLCHAIN_TEST}
		ret=$?

		if [ $ret -eq 0 ]; then
			Test_Info "Successfully copy toolchain into $TOOLCHAIN_TEST"
			return $ret
		else
			Test_Info "Meet error when copy toolchain into $TOOLCHAIN_TEST"
			return $ret
		fi
	else
		Test_Info "No tarball named ${sdk_name}-toolchain-gmae under ${toolchain_dir}"
		return $ret
	fi
}

# Function to execute command and exit if run out of time
# $1 is timeout value
# $2 is the command to be executed
Test_Time_Out()
{
	local timeout=$1
	shift
	local command=$*
	local date=0
	local tmp=`mktemp`
	local ret=1
	local pid=0
	local ppid=0
	local i=0
	declare local pid_l

	# Run command in background
	($command; echo $? > $tmp) &
	pid=$!
	while ps -e -o pid | grep -qw $pid; do
		if [ $date -ge $timeout ]; then
			Test_Info "$timeout Timeout when running command $command"
			rm -rf $tmp

			# Find all child processes of pid and kill them
			ppid=$pid
			ps -f --ppid $ppid
			ret=$?
	
			while [ $ret -eq 0 ]
			do
				# If yes, get the child pid and check if the child pid has other child pid
				# Continue the while loop until there is no child pid found
				pid_l[$i]=`ps -f --ppid $ppid | awk '{if ($2 != "PID") print $2}'`
				ppid=${pid_l[$i]}
				i=$((i+1))
				ps -f --ppid $ppid
				ret=$?
			done
	
				# Kill these children pids from the last one
				while [ $i -ne 0 ]
				do
					i=$((i-1))
					kill ${pid_l[$i]}
					sleep 2
				done
	
				# Kill the parent id
				kill $pid
				return 1
		fi
		sleep 5
		date=`expr $date + 5`
	done
	ret=`cat $tmp`
	rm -rf $tmp
	return $ret
}

# Function to test toolchain
# $1 is test project name
# $2 is the timeout value
Test_Toolchain()
{
	local test_project=$1
	local timeout=$2
	local ret=1
	local suffix="tar.bz2"
	local env_setup=""
	local pro_install="${TEST_TMP}/pro_install"

	# Set value for PROJECT_PV and PROJECT_DOWNLOAD_URL accordingly
	if [ $test_project == "cvs" ]; then
		PROJECT_PV=1.12.13
		PROJECT_DOWNLOAD_URL="http://ftp.gnu.org/non-gnu/cvs/source/feature/1.12.13/cvs-1.12.13.tar.bz2"
	elif [ $test_project == "iptables" ]; then
		PROJECT_PV=1.4.11
		PROJECT_DOWNLOAD_URL="http://netfilter.org/projects/iptables/files/iptables-1.4.11.tar.bz2"
	elif [ $test_project == "sudoku-savant" ]; then
		PROJECT_PV=1.3
		PROJECT_DOWNLOAD_URL="http://downloads.sourceforge.net/project/sudoku-savant/sudoku-savant/sudoku-savant-1.3/sudoku-savant-1.3.tar.bz2"
	else
		Test_Info "Unknown test project name $test_project"
		return 1
	fi

	# Download test project and extract it
	Test_Project_Prepare $TOOLCHAIN_PROJECTS $test_project
	if [ $? -ne 0 ]; then
		Test_Info "Prepare test project file failed"
		return 1
	fi

	# Extract toolchain tarball into ${TEST_TMP}
	Test_Toolchain_Prepare $TOOLCHAIN_DIR $SDK_NAME
	ret=$?
	if [ $ret -ne 0 ]; then
		Test_Info "Prepare toolchain test environment failed"
		return $ret
	fi

	if [ ! -d ${pro_install} ]; then
		mkdir -p ${pro_install}
	fi

	# Begin to build test project in toolchain environment
	env_setup=`find ${TOOLCHAIN_TEST}/poky -name "environment-setup*"`

	source $env_setup

	if [ $test_project == "cvs" -o $test_project == "iptables" ]; then
		cd ${TEST_TMP}/${test_project}-${PROJECT_PV}
		Test_Time_Out $timeout ./configure ${CONFIGURE_FLAGS} || { Test_Info "configure failed with $test_project"; return 1; }
		Test_Time_Out $timeout make -j4 || { Test_Info "make failed with $test_project"; return 1; }
		Test_Time_Out $timeout make install DESTDIR=${pro_install} || { Test_Info "make failed with $test_project"; return 1; }
		cd -
		ret=0
	elif [ $test_project == "sudoku-savant" ]; then
		cd ${TEST_TMP}/${test_project}-${PROJECT_PV}
		Test_Time_Out $timeout ./configure ${CONFIGURE_FLAGS} || { Test_Info "configure failed with $test_project"; return 1; }
		Test_Time_Out $timeout make -j4 || { Test_Info "make failed with $test_project"; return 1; }
		cd -
		ret=0
	else
		Test_Info "Unknown test project $test_project"
		ret=1
	fi

	return $ret
}