undefined reference to `DeviceAuth_GetCertificatePath' in 20.10

bill chadwick 136 Reputation points
2020-11-18T16:18:57.713+00:00

Az Sphere 20.10

Linking is giving undefined reference to `DeviceAuth_GetCertificatePath'

C:/Program Files (x86)/Microsoft Azure Sphere SDK/Sysroots/7/tools/gcc/real-ld.exe: CMakeFiles/PrivateNetworkServices.dir/main.c.obj: in function main': C:\Users\trt-dev6\azSphere\azure-sphere-samples-master\azure-sphere-samples-master\Samples\PrivateNetworkServices\out\ARM-Debug/../../main.c:448: undefined reference to DeviceAuth_GetCertificatePath'

Can anyone help resolve that please?

Azure Sphere
Azure Sphere
An Azure internet of things security solution including hardware, operating system, and cloud components.
157 questions
Accepted answer
  1. bill chadwick 136 Reputation points
    2020-11-19T12:11:35.897+00:00

    OK so it seems that to use DeviceAuth_GetCertificatePath

    that you must add tlsutils to the list of libraries in cMakeLists.txt

    So I guess failing to mention that is a deficiency of the azsphere documentation,

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  1. bill chadwick 136 Reputation points
    2020-11-19T17:21:42.117+00:00 
    #define SSL_FILETYPE_PEM 1

 if (Application_IsDeviceAuthReady(&authReady) == 0) {
            if (authReady) {
                const char *certPath = DeviceAuth_GetCertificatePath();

                WOLFSSL_X509 *x509;
                x509 = wolfSSL_X509_load_certificate_file(certPath, SSL_FILETYPE_PEM);


                /* ------ EXTRACT CERTIFICATE ELEMENTS ------ */


                /* extract subjectName  */
                name = wolfSSL_X509_get_subject_name(x509);
                if (name == NULL)
                    Log_Debug("wolfSSL_X509_get_subject_name failed");
                else
                    Log_Debug("subject name:%s\n\r", wolfSSL_X509_NAME_oneline(name, subjectName, 80));

                /* extract issuerName  */
                name = wolfSSL_X509_get_issuer_name(x509);
                if (name == NULL)
                    Log_Debug("wolfSSL_X509_get_issuer_name failed");
                else
                    Log_Debug("issuer name:%s\n\r", wolfSSL_X509_NAME_oneline(name, issuerName, 80));

                // see https://www.wolfssl.com/forums/topic958-using-notbefore-notafter.html

                char *b = wolfSSL_X509_notBefore(x509);
                Log_Debug("not before:%s\n\r", &b[2]);
                char *a = wolfSSL_X509_notAfter(x509);
                Log_Debug("not after:%s\n\r", &a[2]);

                wolfSSL_X509_free(x509);
            }
        }

    prints out (tenant ID changed)

    subject name:

    issuer name:/C=US/ST=Washington/L=Redmond/O=Microsoft Corporation/CN=tenanit-id-id-id

    not before:201119111252Z

    not after:201120121252Z