tests/cli_tests/opcua_test_encrypted.bash
author Edouard Tisserant <edouard.tisserant@gmail.com>
Tue, 15 Nov 2022 20:43:39 +0100
branchwxPython4
changeset 3677 6d9040e07c32
parent 3634 db3ea47b0d0b
child 3718 7841b651d601
permissions -rw-r--r--
OPC-UA: only support the encryption policy selected in config.

By default open62541 client accepts all supported policies, but in makes problem
when negociating with some servers while most clients seems to only support
one policy at a time.
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#!/bin/bash
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rm -f ./SRVOK ./PLCOK
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yes "" | openssl req -x509 -newkey rsa:2048 -keyout my_private_key.pem -out my_cert.pem \
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        -days 355 -nodes -addext "subjectAltName = URI:urn:example.org:FreeOpcUa:python-opcua"
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openssl x509 -outform der -in my_cert.pem -out my_cert.der
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# Run server
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$BEREMIZPYTHONPATH - > >(
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    echo "Start SRV loop"
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    while read line; do 
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        # Wait for server to print modified value
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        echo "SRV>> $line"
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        if [[ "$line" == 3.4 ]]; then
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            echo "PLC could write value"
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            touch ./SRVOK
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        fi
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    done
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    echo "End SRV loop"
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) << EOF &
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import sys
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import time
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from opcua import ua, Server
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server = Server()
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server.set_endpoint("opc.tcp://127.0.0.1:4840/freeopcua/server/")
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server.set_security_policy([ua.SecurityPolicyType.Basic256Sha256_SignAndEncrypt])
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server.load_certificate("my_cert.der")
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server.load_private_key("my_private_key.pem")
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uri = "http://beremiz.github.io"
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idx = server.register_namespace(uri)
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objects = server.get_objects_node()
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testobj = objects.add_object(idx, "TestObject")
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testvarout = testobj.add_variable(idx, "TestOut", 1.2)
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testvar = testobj.add_variable(idx, "TestIn", 5.6)
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testvar.set_writable()
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server.start()
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try:
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    while True:
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        time.sleep(1)
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        print testvar.get_value()
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        sys.stdout.flush()
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finally:
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    server.stop()
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EOF
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SERVER_PID=$!
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PROJECT_FILES_DIR=$BEREMIZPATH/tests/projects/opcua_client_encrypted/project_files
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mkdir $PROJECT_FILES_DIR
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cp my_cert.der my_private_key.pem $PROJECT_FILES_DIR
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# Start PLC with opcua test
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setsid $BEREMIZPYTHONPATH $BEREMIZPATH/Beremiz_cli.py -k \
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     --project-home $BEREMIZPATH/tests/projects/opcua_client_encrypted build transfer run > >(
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echo "Start PLC loop"
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while read line; do 
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    # Wait for PLC runtime to output expected value on stdout
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    echo "PLC>> $line"
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    if [[ "$line" == 1.2 ]]; then
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        echo "PLC could read value"
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        touch ./PLCOK
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    fi
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done
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echo "End PLC loop"
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) &
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PLC_PID=$!
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echo all subprocess started, start polling results
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res=110  # default to ETIMEDOUT
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c=45
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while ((c--)); do
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    if [[ -a ./SRVOK && -a ./PLCOK ]]; then
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        echo got results.
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        res=0  # OK success
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        break
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    else
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        echo waiting.... $c
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        sleep 1
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    fi
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done
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# Kill PLC and subprocess
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echo will kill PLC:$PLC_PID and SERVER:$SERVER_PID
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pkill -s $PLC_PID 
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kill $SERVER_PID
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exit $res