#!/bin/bash

# ocsp-stapling.test
# Test requires HAVE_OCSP and HAVE_CERTIFICATE_STATUS_REQUEST

# Note, this script makes connection(s) to the public Internet.

SCRIPT_DIR="$(dirname "$0")"

if [[ -z "${RETRIES_REMAINING-}" ]]; then
    export RETRIES_REMAINING=2
fi

if ! ./examples/client/client -V | grep -q 3; then
    echo 'skipping ocsp-stapling.test because TLS1.2 is not available.' 1>&2
    exit 77
fi

if openssl s_server -help 2>&1 | fgrep -q -i ipv6 && nc -h 2>&1 | fgrep -q -i ipv6; then
    IPV6_SUPPORTED=yes
else
    IPV6_SUPPORTED=no
fi

if ./examples/client/client '-#' | fgrep -q -e ' -DTEST_IPV6 '; then
    if [[ "$IPV6_SUPPORTED" == "no" ]]; then
        echo 'Skipping IPV6 test in environment lacking IPV6 support.'
        exit 77
    fi
    LOCALHOST='[::1]'
    LOCALHOST_FOR_NC='::1'
    V4V6=6
    V4V6_FLAG=-6
else
    LOCALHOST='127.0.0.1'
    LOCALHOST_FOR_NC='127.0.0.1'
    if [[ "$IPV6_SUPPORTED" == "yes" ]]; then
        V4V6_FLAG=-4
    else
        V4V6_FLAG=
    fi
    V4V6=4
fi

PARENTDIR="$PWD"

# create a unique workspace directory ending in PID for the script instance ($$)
# to make this instance orthogonal to any others running, even on same repo.
# TCP ports are also carefully formed below from the PID, to minimize conflicts.

WORKSPACE="${PARENTDIR}/workspace.pid$$"

mkdir "${WORKSPACE}" || exit $?
cp -pR ${SCRIPT_DIR}/../certs "${WORKSPACE}"/ || exit $?
cd "$WORKSPACE" || exit $?
ln -s ../examples

CERT_DIR="./certs/ocsp"
ready_file="$WORKSPACE"/wolf_ocsp_s1_readyF$$
ready_file2="$WORKSPACE"/wolf_ocsp_s1_readyF2$$
printf '%s\n' "ready file:  \"$ready_file\""

test_cnf="ocsp_s1.cnf"

wait_for_readyFile(){

    counter=0

    while [ ! -s "$1" -a "$counter" -lt 20 ]; do
        if [[ -n "${2-}" ]]; then
            if ! kill -0 $2 2>&-; then
                echo "pid $2 for port ${3-} exited before creating ready file.  bailing..."
                exit 1
            fi
        fi
        echo -e "waiting for ready file..."
        sleep 0.1
        counter=$((counter+ 1))
    done

    if test -e "$1"; then
        echo -e "found ready file, starting client..."
    else
        echo -e "NO ready file at \"$1\" -- ending test..."
        exit 1
    fi

}

remove_single_rF(){
    if test -e "$1"; then
        printf '%s\n' "removing ready file: \"$1\""
        rm "$1"
    fi
}

#create a configure file for cert generation with the port 0 solution
create_new_cnf() {
    printf '%s\n' "Random Port Selected: $1"

    printf '%s\n' "#" > $test_cnf
    printf '%s\n' "# openssl configuration file for OCSP certificates" >> $test_cnf
    printf '%s\n' "#" >> $test_cnf
    printf '%s\n' "" >> $test_cnf
    printf '%s\n' "# Extensions to add to a certificate request (intermediate1-ca)" >> $test_cnf
    printf '%s\n' "[ v3_req1 ]" >> $test_cnf
    printf '%s\n' "basicConstraints       = CA:false" >> $test_cnf
    printf '%s\n' "subjectKeyIdentifier   = hash" >> $test_cnf
    printf '%s\n' "authorityKeyIdentifier = keyid:always,issuer:always" >> $test_cnf
    printf '%s\n' "keyUsage               = nonRepudiation, digitalSignature, keyEncipherment" >> $test_cnf
    printf '%s\n' "authorityInfoAccess    = OCSP;URI:http://127.0.0.1:$1" >> $test_cnf
    printf '%s\n' "" >> $test_cnf
    printf '%s\n' "# Extensions to add to a certificate request (intermediate2-ca)" >> $test_cnf
    printf '%s\n' "[ v3_req2 ]" >> $test_cnf
    printf '%s\n' "basicConstraints       = CA:false" >> $test_cnf
    printf '%s\n' "subjectKeyIdentifier   = hash" >> $test_cnf
    printf '%s\n' "authorityKeyIdentifier = keyid:always,issuer:always" >> $test_cnf
    printf '%s\n' "keyUsage               = nonRepudiation, digitalSignature, keyEncipherment" >> $test_cnf
    printf '%s\n' "authorityInfoAccess    = OCSP;URI:http://127.0.0.1:22222" >> $test_cnf
    printf '%s\n' "" >> $test_cnf
    printf '%s\n' "# Extensions to add to a certificate request (intermediate3-ca)" >> $test_cnf
    printf '%s\n' "[ v3_req3 ]" >> $test_cnf
    printf '%s\n' "basicConstraints       = CA:false" >> $test_cnf
    printf '%s\n' "subjectKeyIdentifier   = hash" >> $test_cnf
    printf '%s\n' "authorityKeyIdentifier = keyid:always,issuer:always" >> $test_cnf
    printf '%s\n' "keyUsage               = nonRepudiation, digitalSignature, keyEncipherment" >> $test_cnf
    printf '%s\n' "authorityInfoAccess    = OCSP;URI:http://127.0.0.1:22223" >> $test_cnf
    printf '%s\n' "" >> $test_cnf
    printf '%s\n' "# Extensions for a typical CA" >> $test_cnf
    printf '%s\n' "[ v3_ca ]" >> $test_cnf
    printf '%s\n' "basicConstraints       = CA:true" >> $test_cnf
    printf '%s\n' "subjectKeyIdentifier   = hash" >> $test_cnf
    printf '%s\n' "authorityKeyIdentifier = keyid:always,issuer:always" >> $test_cnf
    printf '%s\n' "keyUsage               = keyCertSign, cRLSign" >> $test_cnf
    printf '%s\n' "authorityInfoAccess    = OCSP;URI:http://127.0.0.1:22220" >> $test_cnf
    printf '%s\n' "" >> $test_cnf
    printf '%s\n' "# OCSP extensions." >> $test_cnf
    printf '%s\n' "[ v3_ocsp ]" >> $test_cnf
    printf '%s\n' "basicConstraints       = CA:false" >> $test_cnf
    printf '%s\n' "subjectKeyIdentifier   = hash" >> $test_cnf
    printf '%s\n' "authorityKeyIdentifier = keyid:always,issuer:always" >> $test_cnf
    printf '%s\n' "extendedKeyUsage       = OCSPSigning" >> $test_cnf

    mv $test_cnf $CERT_DIR/$test_cnf
    cd $CERT_DIR
    CURR_LOC="$PWD"
    printf '%s\n' "echo now in $CURR_LOC"
    ./renewcerts-for-test.sh $test_cnf
    cd "$WORKSPACE"
}

remove_ready_file() {
    if test -e "$ready_file"; then
        printf '%s\n' "removing ready file"
        rm "$ready_file"
    fi
    if test -e "$ready_file2"; then
        printf '%s\n' "removing ready file: \"$ready_file2\""
        rm "$ready_file2"
    fi
}

cleanup()
{
    exit_status=$?
    for i in $(jobs -pr)
    do
        kill -s HUP "$i"
    done
    remove_ready_file
    rm $CERT_DIR/$test_cnf
    cd "$PARENTDIR" || return 1
    rm -r "$WORKSPACE" || return 1

    if [[ ("$exit_status" == 1) && ($RETRIES_REMAINING -gt 0) ]]; then
        echo "retrying..."
        RETRIES_REMAINING=$((RETRIES_REMAINING - 1))
        exec $0 "$@"
    fi
}
trap cleanup EXIT INT TERM HUP

[ ! -x ./examples/client/client ] && echo -e "\n\nClient doesn't exist" && exit 1
./examples/client/client '-?' 2>&1 | grep -- 'Client not compiled in!'
if [ $? -eq 0 ]; then
    exit 0
fi

# check if supported key size is large enough to handle 4096 bit RSA
size="$(./examples/client/client '-?' | grep "Max RSA key")"
size="${size//[^0-9]/}"
if [ ! -z "$size" ]; then
    printf 'check on max key size of %d ...' $size
    if [ $size -lt 4096 ]; then
        printf '%s\n' "4096 bit RSA keys not supported"
        exit 0
    fi
    printf 'OK\n'
fi

# choose consecutive ports based on the PID, skipping any that are
# already bound, to avoid the birthday problem in case other
# instances are sharing this host.

get_first_free_port() {
    local ret="$1"
    while :; do
        if [[ "$ret" -ge 65536 ]]; then
            ret=1024
        fi
        if ! nc -z $V4V6_FLAG $LOCALHOST_FOR_NC "$ret"; then
            break
        fi
        ret=$((ret+1))
    done
    echo "$ret"
    return 0
}

base_port=$((((($$ + $RETRIES_REMAINING) * 5) % (65536 - 2048)) + 1024))
port1=$(get_first_free_port $base_port)
port2=$(get_first_free_port $((port1 + 1)))
port3=$(get_first_free_port $((port2 + 1)))


# test interop fail case
ready_file=$PWD/wolf_ocsp_readyF$$
printf '%s\n' "ready file:  \"$ready_file\""
./examples/server/server -b -p $port1 -o -R "$ready_file" &
wolf_pid=$!
wait_for_readyFile "$ready_file" $wolf_pid $port1
if [ ! -f "$ready_file" ]; then
    printf '%s\n' "Failed to create ready file: \"$ready_file\""
    exit 1
else
    # should fail if ocspstapling is also enabled
    OPENSSL_OUTPUT=$(echo "hi" | openssl s_client -status $V4V6_FLAG -legacy_renegotiation -connect "${LOCALHOST}:$port1" -cert ./certs/client-cert.pem -key ./certs/client-key.pem -CAfile ./certs/ocsp/root-ca-cert.pem 2>&1)
    OPENSSL_RESULT=$?
    echo "$OPENSSL_OUTPUT"
    fgrep -q 'self signed certificate in certificate chain' <<< "$OPENSSL_OUTPUT"
    FGREP_RESULT=$?
    if [ $OPENSSL_RESULT -eq 0 -a $FGREP_RESULT -ne 0 ]; then
        printf '%s\n' "Expected verification error from s_client is missing."
        remove_single_rF "$ready_file"
        exit 1
    fi
    remove_single_rF "$ready_file"
    wait $wolf_pid
    if [ $? -ne 1 ]; then
        printf '%s\n' "wolfSSL server unexpected fail value"
        exit 1
    fi
fi


# create a port to use with openssl ocsp responder
./examples/server/server -b -p $port2 -R "$ready_file" &
wolf_pid2=$!
wait_for_readyFile "$ready_file" $wolf_pid2 $port2
if [ ! -f "$ready_file" ]; then
    printf '%s\n' "Failed to create ready file: \"$ready_file\""
    exit 1
else
    printf '%s\n' "Random port selected: $port2"
    # Use client connection to shutdown the server cleanly
    ./examples/client/client -p $port2
    create_new_cnf $port2
fi
sleep 0.1

# is our desired server there? - login.live.com doesn't answers PING
#./scripts/ping.test $server 2

# client test against the server
server=login.live.com
#ca=certs/external/baltimore-cybertrust-root.pem
ca=./certs/external/ca_collection.pem

if [[ "$V4V6" == "4" ]]; then
    ./examples/client/client -C -h $server -p 443 -A $ca -g -W 1
    RESULT=$?
    [ $RESULT -ne 0 ] && echo -e "\n\nClient connection failed" && exit 1
else
    echo "Skipping OCSP test on $server (IPv6 test client)"
fi

# Test with example server

./examples/server/server '-?' 2>&1 | grep -- 'Server not compiled in!'
if [ $? -eq 0 ]; then
    exit 0
fi

# setup ocsp responder
# OLD: ./certs/ocsp/ocspd-intermediate1-ca-issued-certs.sh &
# NEW: openssl isn't being cleaned up, invoke directly in script for cleanup
# purposes!
openssl ocsp -port $port2 -nmin 1                               \
    -index   certs/ocsp/index-intermediate1-ca-issued-certs.txt \
    -rsigner certs/ocsp/ocsp-responder-cert.pem                 \
    -rkey    certs/ocsp/ocsp-responder-key.pem                  \
    -CA      certs/ocsp/intermediate1-ca-cert.pem               \
    "$@" &

sleep 0.1
# "jobs" is not portable for posix. Must use bash interpreter!
[ $(jobs -r | wc -l) -ne 1 ] && \
             printf '\n\n%s\n' "Setup ocsp responder failed, skipping" && exit 0

printf '%s\n\n' "------------- TEST CASE 1 SHOULD PASS ------------------------"
# client test against our own server - GOOD CERT
./examples/server/server -c certs/ocsp/server1-cert.pem -R "$ready_file2" \
                         -k certs/ocsp/server1-key.pem -p $port3 &
wolf_pid3=$!
wait_for_readyFile "$ready_file2" $wolf_pid3 $port3
./examples/client/client -C -A certs/ocsp/root-ca-cert.pem -W 1 -p $port3
RESULT=$?
[ $RESULT -ne 0 ] && printf '\n\n%s\n' "Client connection 1 failed" && exit 1
printf '%s\n\n' "Test PASSED!"

printf '%s\n\n' "------------- TEST CASE 2 SHOULD REVOKE ----------------------"
# client test against our own server - REVOKED CERT
remove_single_rF "$ready_file2"
./examples/server/server -c certs/ocsp/server2-cert.pem -R "$ready_file2" \
                         -k certs/ocsp/server2-key.pem -p $port3 &
wolf_pid3=$!
wait_for_readyFile "$ready_file2" $wolf_pid3 $port3
sleep 0.1
./examples/client/client -C -A certs/ocsp/root-ca-cert.pem -W 1 -p $port3
RESULT=$?
[ $RESULT -ne 1 ] && printf '\n\n%s\n' "Client connection 2 succeeded $RESULT" \
                  && exit 1
printf '%s\n\n' "Test successfully REVOKED!"


if ./examples/client/client -V | grep -q 4; then
    printf '%s\n\n' "------------- TEST CASE 3 SHOULD PASS --------------------"
    # client test against our own server - GOOD CERT
    remove_single_rF "$ready_file2"
    ./examples/server/server -c certs/ocsp/server1-cert.pem -R "$ready_file2" \
                             -k certs/ocsp/server1-key.pem -v 4 \
                             -p $port3 &
    wolf_pid3=$!
    wait_for_readyFile "$ready_file2" $wolf_pid3 $port3
    ./examples/client/client -C -A certs/ocsp/root-ca-cert.pem -W 1 -v 4 -F 1 \
                             -p $port3
    RESULT=$?
    [ $RESULT -ne 0 ] && printf '\n\n%s\n' "Client connection 3 failed" && exit 1
    printf '%s\n\n' "Test PASSED!"

    printf '%s\n\n' "------------- TEST CASE 4 SHOULD PASS --------------------"
    # client test against our own server, must staple - GOOD CERT
    remove_single_rF "$ready_file2"
    ./examples/server/server -c certs/ocsp/server1-cert.pem -R "$ready_file2" \
                             -k certs/ocsp/server1-key.pem -v 4 \
                             -p $port3 &
    wolf_pid3=$!
    wait_for_readyFile "$ready_file2" $wolf_pid3 $port3
    ./examples/client/client -C -A certs/ocsp/root-ca-cert.pem -W 1m -v 4 -F 1 \
                             -p $port3
    RESULT=$?
    [ $RESULT -ne 0 ] && printf '\n\n%s\n' "Client connection 4 failed" && exit 1
    printf '%s\n\n' "Test PASSED!"

    printf '%s\n\n' "------------- TEST CASE 5 SHOULD REVOKE ------------------"
    # client test against our own server - REVOKED CERT
    remove_single_rF "$ready_file2"
    ./examples/server/server -c certs/ocsp/server2-cert.pem -R "$ready_file2" \
                             -k certs/ocsp/server2-key.pem -v 4 \
                             -p $port3 &
    wolf_pid3=$!
    wait_for_readyFile "$ready_file2" $wolf_pid3 $port3
    ./examples/client/client -C -A certs/ocsp/root-ca-cert.pem -W 1 -v 4 -F 1 \
                             -p $port3
    RESULT=$?
    [ $RESULT -ne 1 ] && \
                      printf '\n\n%s\n' "Client connection 5 succeeded $RESULT" \
                      && exit 1
    printf '%s\n\n' "Test successfully REVOKED!"
else
    echo 'skipping TLS1.3 stapling tests.' 1>&2
fi

# need a unique port since may run the same time as testsuite
generate_port() {
    #-------------------------------------------------------------------------#
    # Generate a random port number
    #-------------------------------------------------------------------------#

    if [[ "$OSTYPE" == "linux-gnu"* ]]; then
        port=$(($(od -An -N2 /dev/urandom) % (65535-49512) + 49512))
    elif [[ "$OSTYPE" == "darwin"* ]]; then
        port=$(($(od -An -N2 /dev/random) % (65535-49512) + 49512))
    else
        echo "Unknown OS TYPE"
        exit 1
    fi
}

# Start OpenSSL server that has no OCSP responses to return
generate_port
openssl s_server $V4V6_FLAG -cert ./certs/server-cert.pem -key certs/server-key.pem -www -port $port &
openssl_pid=$!
sleep 0.1

printf '%s\n\n' "------------- TEST CASE 6 SHOULD PASS ----------------------"
# client asks for OCSP staple but doesn't fail when none returned
./examples/client/client -p $port -g -v 3 -W 1

RESULT=$?
[ $RESULT -ne 0 ] && printf '\n\n%s\n' "Client connection 6 failed" && exit 1
printf '%s\n\n' "Test PASSED!"

printf '%s\n\n' "------------- TEST CASE 7 SHOULD UNKNOWN -------------------"
# client asks for OCSP staple but doesn't fail when none returned
./examples/client/client -p $port -g -v 3 -W 1m

RESULT=$?
[ $RESULT -ne 1 ] && printf '\n\n%s\n' "Client connection 7 succeeded $RESULT" \
                  && exit 1
printf '%s\n\n' "Test PASSED!"

openssl ciphers -tls1_3
openssl_tls13=$?
./examples/client/client -V | grep -q 4
wolfssl_tls13=$?
if [ "$openssl_tls13" = "0" -a "$wolfssl_tls13" = "0" ]; then
    printf '%s\n\n' "------------- TEST CASE 8 SHOULD PASS --------------------"
    # client asks for OCSP staple but doesn't fail when none returned
    ./examples/client/client -p $port -g -v 4 -W 1

    RESULT=$?
    [ $RESULT -ne 0 ] && printf '\n\n%s\n' "Client connection 8 failed" && exit 1
    printf '%s\n\n' "Test PASSED!"

    printf '%s\n\n' "------------- TEST CASE 9 SHOULD UNKNOWN -----------------"
    # client asks for OCSP staple but doesn't fail when none returned
    ./examples/client/client -p $port -g -v 4 -W 1m

    RESULT=$?
    [ $RESULT -ne 1 ] \
                  && printf '\n\n%s\n' "Client connection 9 succeeded $RESULT" \
                  && exit 1
    printf '%s\n\n' "Test PASSED!"
else
    echo -n 'skipping TLS1.3 stapling interoperability test:' 1>&2
    if [ "$openssl_tls13" != "0" ]; then
        echo -n ' OpenSSL' 1>&2
    fi
    if [ "$wolfssl_tls13" != "0" ]; then
        if [ "$openssl_tls13" != "0" ]; then
            echo -n ' and' 1>&2
        fi
        echo -n ' wolfSSL' 1>&2
    fi
    echo -n ' missing TLS1.3 support.' 1>&2
fi

printf '%s\n\n' "------------------- TESTS COMPLETE ---------------------------"

exit 0