dotnet

Work In Progress

Even if working well with playground of the EET system, this is still work in progress.

Any contribution is welcomed!

C# implementation of core EET functionalities

Based on Java implementation now works for generating valid signed SOAP request.

!!WARNING!! I am not C# native, the code could be ugly it can even can harm your c#ist eyes. But still... the code works for me.

Look at tests project for example how to use the main class EetRegisterRequest.

There are no other dependences but .NET framework (built on 4.5, I see no restriction to compile with any lower version - sha256 support is required).

List of features:

• build a sale registration based on business data
• generate PKP/BKP for receipt printing
• generate valid signed SOAP message
• send the request to the playground endpoint
• receive response containing FIK

Build

Open & build solution in dotnet\openeet-lite\openeet-lite.sln then find dotnet\openeet-lite\bin\Release\openeet-lite.dll and use it in your builds or use the code&project directly.

Basic usage

public static void simpleRegistrationProcessTest(){
    //set minimal business data & certificate with key loaded from pkcs12 file in the resources
    EetRegisterRequest request=EetRegisterRequest.builder()
       .dic_popl("CZ1212121218")
       .id_provoz("1")
       .id_pokl("POKLADNA01")
       .porad_cis("1")
       .dat_trzby("2016-06-30T08:43:28+02:00")
       .celk_trzba(100.0)
       .rezim(0)
       .pkcs12(TestData._01000003)
       .pkcs12password("eet")
       .build();

    //for receipt printing in online mode
    String bkp=request.formatBkp();
    if (bkp == null) throw new ApplicationException("BKP is null");

    //for receipt printing in offline mode
    String pkp=request.formatPkp();
    if (pkp == null) throw new ApplicationException("PKP is null");
    //the receipt can be now stored for offline processing

    //try send
    String requestBody=request.generateSoapRequest();
    if (requestBody == null) throw new ApplicationException("SOAP request is null");

    String response=request.sendRequest(requestBody, "https://pg.eet.cz:443/eet/services/EETServiceSOAP/v2");
    //extract FIK
    if (response == null) throw new ApplicationException("response is null");
    if (response.IndexOf("Potvrzeni fik=") < 0) throw new ApplicationException("FIK not found in the response");
    //ready to print online receipt
    Console.WriteLine("OK!"); //a bit brief :-) but enough
}

Plans

• releas & publish nuget package
• certificate management utilities - create cert request, get certificate and key ready to use (depends on including CA services in the playground)
• basic offline processing - mainly in the point of view of request structure manipulation (what remains unchanged when resending)