(C) Client Certificate in REST (USB Token or Smartcard)

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Demonstrates how to use a client certificate with a REST connection where the certificate and private key are located on a USB token or smart card.

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#include <C_CkRest.h>
#include <C_CkSocket.h>
#include <C_CkCert.h>

void ChilkatSample(void)
    {
    HCkRest rest;
    HCkSocket socket;
    HCkCert cert;
    BOOL success;
    BOOL bTls;
    int port;
    int maxWaitMs;
    BOOL bAutoReconnect;
    const char *responseJson;

    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    // This example shows how to use the Chilkat socket object's connection.
    rest = CkRest_Create();
    socket = CkSocket_Create();

    // Set the certificate to be used for mutual TLS authentication
    cert = CkCert_Create();

    // If the smartcard or token requires a PIN...
    CkCert_putSmartCardPin(cert,"000000");

    success = CkCert_LoadFromSmartcard(cert,"");
    if (success != TRUE) {
        printf("%s\n",CkCert_lastErrorText(cert));
        CkRest_Dispose(rest);
        CkSocket_Dispose(socket);
        CkCert_Dispose(cert);
        return;
    }

    success = CkSocket_SetSslClientCert(socket,cert);
    if (success != TRUE) {
        printf("%s\n",CkSocket_lastErrorText(socket));
        CkRest_Dispose(rest);
        CkSocket_Dispose(socket);
        CkCert_Dispose(cert);
        return;
    }

    // Establish the connection using the socket object (with client certificate authentication).
    bTls = TRUE;
    port = 443;
    maxWaitMs = 5000;
    success = CkSocket_Connect(socket,"www.example.com",port,bTls,maxWaitMs);
    if (success != TRUE) {
        printf("Connect Failure Error Code: %d\n",CkSocket_getConnectFailReason(socket));
        printf("%s\n",CkSocket_lastErrorText(socket));
        CkRest_Dispose(rest);
        CkSocket_Dispose(socket);
        CkCert_Dispose(cert);
        return;
    }

    bAutoReconnect = TRUE;

    // Use the connection:
    success = CkRest_UseConnection(rest,socket,bAutoReconnect);
    if (success != TRUE) {
        printf("%s\n",CkRest_lastErrorText(rest));
        CkRest_Dispose(rest);
        CkSocket_Dispose(socket);
        CkCert_Dispose(cert);
        return;
    }

    // At this point we are connected and can make REST calls...
    // For example..
    responseJson = CkRest_fullRequestNoBody(rest,"GET","/someQuery");
    if (CkRest_getLastMethodSuccess(rest) != TRUE) {
        printf("%s\n",CkRest_lastErrorText(rest));
        CkRest_Dispose(rest);
        CkSocket_Dispose(socket);
        CkCert_Dispose(cert);
        return;
    }



    CkRest_Dispose(rest);
    CkSocket_Dispose(socket);
    CkCert_Dispose(cert);

    }