#!/usr/bin/env bash

# ocsp-stapling-with-ca-as-responder.test

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

# if we can, isolate the network namespace to eliminate port collisions.
if [[ -n "$NETWORK_UNSHARE_HELPER" ]]; then
     if [[ -z "$NETWORK_UNSHARE_HELPER_CALLED" ]]; then
         export NETWORK_UNSHARE_HELPER_CALLED=yes
         exec "$NETWORK_UNSHARE_HELPER" "$0" "$@" || exit $?
     fi
elif [ "${AM_BWRAPPED-}" != "yes" ]; then
    bwrap_path="$(command -v bwrap)"
    if [ -n "$bwrap_path" ]; then
        export AM_BWRAPPED=yes
        exec "$bwrap_path" --unshare-net --dev-bind / / "$0" "$@"
    fi
    unset AM_BWRAPPED
fi

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

if ! ./examples/client/client -V | grep -q 3; then
    echo 'skipping ocsp-stapling-with-ca-as-responder.test because TLS1.2 is not available.' 1>&2
    exit 77
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 files:  \"$ready_file\" \"$ready_file2\""

test_cnf="ocsp_s_w_ca_a_r.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: $RPORTSELECTED"

    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 $(jobs -pr)
    do
        kill -s kill "$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

server=login.live.com
ca=certs/external/baltimore-cybertrust-root.pem

[ ! -x ./examples/client/client ] && printf '\n\n%s\n' "Client doesn't exist" && exit 1


# 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 127.0.0.1 "$ret"; then
            break
        fi
        ret=$((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)))


# create a port to use with openssl ocsp responder
./examples/server/server -R "$ready_file" -p $port1 &
wolf_pid=$!
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
    printf '%s\n' "Random port selected: $port1"
    # Use client connection to shutdown the server cleanly
    ./examples/client/client -p $port1
    create_new_cnf $port1
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
# external test case was never running, disable for now but retain case in event
# we wish to re-activate in the future.
#./examples/client/client -X -C -h $server -p 443 -A $ca -g -W 1
#RESULT=$?
#[ $RESULT -ne 0 ] && echo -e "\n\nClient connection failed" && exit 1

# setup ocsp responder
# OLD: ./certs/ocsp/ocspd-intermediate1-ca-issued-certs-with-ca-as-responder.sh &
# NEW: openssl isn't being cleaned up, invoke directly in script for cleanup
# purposes!
openssl ocsp -port $port1 -nmin 1                               \
    -index   certs/ocsp/index-intermediate1-ca-issued-certs.txt \
    -rsigner certs/ocsp/intermediate1-ca-cert.pem               \
    -rkey    certs/ocsp/intermediate1-ca-key.pem                \
    -CA      certs/ocsp/intermediate1-ca-cert.pem               \
    "$@"                                                        \
    &

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 \
                         -k certs/ocsp/server1-key.pem -R "$ready_file2" \
                         -p $port2 &
wolf_pid2=$!
wait_for_readyFile "$ready_file2" $wolf_pid2 $port2
./examples/client/client -C -A certs/ocsp/root-ca-cert.pem -W 1 \
                         -p $port2
RESULT=$?
[ $RESULT -ne 0 ] && printf '\n\n%s\n' "Client connection 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 "$ready_file2"
./examples/server/server -c certs/ocsp/server2-cert.pem \
                         -k certs/ocsp/server2-key.pem -R "$ready_file2" \
                         -p $port2 &
wolf_pid2=$!
wait_for_readyFile "$ready_file2" $wolf_pid2 $port2
./examples/client/client -C -A certs/ocsp/root-ca-cert.pem -W 1 \
                         -p $port2
RESULT=$?
[ $RESULT -ne 1 ] && printf '\n\n%s\n' "Client connection succeeded $RESULT" && exit 1
printf '%s\n\n' "Test successfully REVOKED!"

exit 0