/**
** abac_util_cert.c
** utility code related process/handling of certificate_t
**/
#include <err.h>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <assert.h>
#include <stdarg.h>
#include <sys/stat.h>
#include <termios.h>
#include <unistd.h>
#include <sys/types.h>

#include <credentials/certificates/certificate.h>
#include <credentials/certificates/x509.h>
#include <credentials/keys/private_key.h>

#include "abac_util.h"

static int debug=0;

char *cert_get_keyid(certificate_t *cert) {
    // get the keyid
    x509_t *x509 = (x509_t *)cert;
    chunk_t keyid = x509->get_subjectKeyIdentifier(x509);
    chunk_t string = chunk_to_hex(keyid, NULL, 0);
    return (char *)string.ptr;
}

certificate_t *cert_get_id_cert_from_file(char *filename)
{
    certificate_t *cert = lib->creds->create(lib->creds,
        CRED_CERTIFICATE, CERT_X509,
        BUILD_FROM_FILE, filename,
        BUILD_X509_FLAG, X509_AA, // attribute authority, dumb
        BUILD_END
    );
    return cert;
}

certificate_t *cert_get_id_cert_from_chunk(chunk_t chunk)
{
    certificate_t *cert = lib->creds->create(lib->creds,
        CRED_CERTIFICATE, CERT_X509,
        BUILD_BLOB_ASN1_DER, chunk,
        BUILD_X509_FLAG, X509_AA,
        BUILD_END
    );
    return cert;
}

certificate_t *cert_get_id_cert_from_pem_chunk(chunk_t chunk)
{
    certificate_t *cert = lib->creds->create(lib->creds,
        CRED_CERTIFICATE, CERT_X509,
        BUILD_BLOB_PEM, chunk,
        BUILD_X509_FLAG, X509_AA,
        BUILD_END
    );
    return cert;
}

certificate_t *cert_get_attr_cert_from_file(char *filename)
{
    certificate_t *cert = lib->creds->create(lib->creds,
        CRED_CERTIFICATE, CERT_X509_AC,
        BUILD_FROM_FILE, filename,
        BUILD_END
    );
    return cert;
}


certificate_t *cert_get_attr_cert_from_chunk(chunk_t chunk)
{
    certificate_t *cert = lib->creds->create(lib->creds,
        CRED_CERTIFICATE, CERT_X509_AC,
        BUILD_BLOB_ASN1_DER, chunk,
        BUILD_END
    );
    return cert;
}