/* crypto/x509/x509_txt.c */

/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)

 * All rights reserved.

 *

 * This package is an SSL implementation written

 * by Eric Young (eay@cryptsoft.com).

 * The implementation was written so as to conform with Netscapes SSL.

 *

 * This library is free for commercial and non-commercial use as long as

 * the following conditions are aheared to.  The following conditions

 * apply to all code found in this distribution, be it the RC4, RSA,

 * lhash, DES, etc., code; not just the SSL code.  The SSL documentation

 * included with this distribution is covered by the same copyright terms

 * except that the holder is Tim Hudson (tjh@cryptsoft.com).

 *

 * Copyright remains Eric Young's, and as such any Copyright notices in

 * the code are not to be removed.

 * If this package is used in a product, Eric Young should be given attribution

 * as the author of the parts of the library used.

 * This can be in the form of a textual message at program startup or

 * in documentation (online or textual) provided with the package.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 * 1. Redistributions of source code must retain the copyright

 *    notice, this list of conditions and the following disclaimer.

 * 2. Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in the

 *    documentation and/or other materials provided with the distribution.

 * 3. All advertising materials mentioning features or use of this software

 *    must display the following acknowledgement:

 *    "This product includes cryptographic software written by

 *     Eric Young (eay@cryptsoft.com)"

 *    The word 'cryptographic' can be left out if the rouines from the library

 *    being used are not cryptographic related :-).

 * 4. If you include any Windows specific code (or a derivative thereof) from

 *    the apps directory (application code) you must include an acknowledgement:

 *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"

 *

 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND

 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE

 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS

 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY

 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

 * SUCH DAMAGE.

 *

 * The licence and distribution terms for any publically available version or

 * derivative of this code cannot be changed.  i.e. this code cannot simply be

 * copied and put under another distribution licence

 * [including the GNU Public Licence.]

 */

#include <stdio.h>

#include <time.h>

#include <errno.h>

#include "cryptlib.h"

#include <openssl/lhash.h>

#include <openssl/buffer.h>

#include <openssl/evp.h>

#include <openssl/asn1.h>

#include <openssl/x509.h>

#include <openssl/objects.h>

const char *X509_verify_cert_error_string(long n)

{

    static char buf[100];

    switch ((int)n) {

    case X509_V_OK:

        return ("ok");

    case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT:

        return ("unable to get issuer certificate");

    case X509_V_ERR_UNABLE_TO_GET_CRL:

        return ("unable to get certificate CRL");

    case X509_V_ERR_UNABLE_TO_DECRYPT_CERT_SIGNATURE:

        return ("unable to decrypt certificate's signature");

    case X509_V_ERR_UNABLE_TO_DECRYPT_CRL_SIGNATURE:

        return ("unable to decrypt CRL's signature");

    case X509_V_ERR_UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY:

        return ("unable to decode issuer public key");

    case X509_V_ERR_CERT_SIGNATURE_FAILURE:

        return ("certificate signature failure");

    case X509_V_ERR_CRL_SIGNATURE_FAILURE:

        return ("CRL signature failure");

    case X509_V_ERR_CERT_NOT_YET_VALID:

        return ("certificate is not yet valid");

    case X509_V_ERR_CRL_NOT_YET_VALID:

        return ("CRL is not yet valid");

    case X509_V_ERR_CERT_HAS_EXPIRED:

        return ("certificate has expired");

    case X509_V_ERR_CRL_HAS_EXPIRED:

        return ("CRL has expired");

    case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD:

        return ("format error in certificate's notBefore field");

    case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD:

        return ("format error in certificate's notAfter field");

    case X509_V_ERR_ERROR_IN_CRL_LAST_UPDATE_FIELD:

        return ("format error in CRL's lastUpdate field");

    case X509_V_ERR_ERROR_IN_CRL_NEXT_UPDATE_FIELD:

        return ("format error in CRL's nextUpdate field");

    case X509_V_ERR_OUT_OF_MEM:

        return ("out of memory");

    case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT:

        return ("self signed certificate");

    case X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN:

        return ("self signed certificate in certificate chain");

    case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY:

        return ("unable to get local issuer certificate");

    case X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE:

        return ("unable to verify the first certificate");

    case X509_V_ERR_CERT_CHAIN_TOO_LONG:

        return ("certificate chain too long");

    case X509_V_ERR_CERT_REVOKED:

        return ("certificate revoked");

    case X509_V_ERR_INVALID_CA:

        return ("invalid CA certificate");

    case X509_V_ERR_INVALID_NON_CA:

        return ("invalid non-CA certificate (has CA markings)");

    case X509_V_ERR_PATH_LENGTH_EXCEEDED:

        return ("path length constraint exceeded");

    case X509_V_ERR_PROXY_PATH_LENGTH_EXCEEDED:

        return ("proxy path length constraint exceeded");

    case X509_V_ERR_PROXY_CERTIFICATES_NOT_ALLOWED:

        return

            ("proxy certificates not allowed, please set the appropriate flag");

    case X509_V_ERR_INVALID_PURPOSE:

        return ("unsupported certificate purpose");

    case X509_V_ERR_CERT_UNTRUSTED:

        return ("certificate not trusted");

    case X509_V_ERR_CERT_REJECTED:

        return ("certificate rejected");

    case X509_V_ERR_APPLICATION_VERIFICATION:

        return ("application verification failure");

    case X509_V_ERR_SUBJECT_ISSUER_MISMATCH:

        return ("subject issuer mismatch");

    case X509_V_ERR_AKID_SKID_MISMATCH:

        return ("authority and subject key identifier mismatch");

    case X509_V_ERR_AKID_ISSUER_SERIAL_MISMATCH:

        return ("authority and issuer serial number mismatch");

    case X509_V_ERR_KEYUSAGE_NO_CERTSIGN:

        return ("key usage does not include certificate signing");

    case X509_V_ERR_UNABLE_TO_GET_CRL_ISSUER:

        return ("unable to get CRL issuer certificate");

    case X509_V_ERR_UNHANDLED_CRITICAL_EXTENSION:

        return ("unhandled critical extension");

    case X509_V_ERR_KEYUSAGE_NO_CRL_SIGN:

        return ("key usage does not include CRL signing");

    case X509_V_ERR_KEYUSAGE_NO_DIGITAL_SIGNATURE:

        return ("key usage does not include digital signature");

    case X509_V_ERR_UNHANDLED_CRITICAL_CRL_EXTENSION:

        return ("unhandled critical CRL extension");

    case X509_V_ERR_INVALID_EXTENSION:

        return ("invalid or inconsistent certificate extension");

    case X509_V_ERR_INVALID_POLICY_EXTENSION:

        return ("invalid or inconsistent certificate policy extension");

    case X509_V_ERR_NO_EXPLICIT_POLICY:

        return ("no explicit policy");

    case X509_V_ERR_DIFFERENT_CRL_SCOPE:

        return ("Different CRL scope");

    case X509_V_ERR_UNSUPPORTED_EXTENSION_FEATURE:

        return ("Unsupported extension feature");

    case X509_V_ERR_UNNESTED_RESOURCE:

        return ("RFC 3779 resource not subset of parent's resources");

    case X509_V_ERR_PERMITTED_VIOLATION:

        return ("permitted subtree violation");

    case X509_V_ERR_EXCLUDED_VIOLATION:

        return ("excluded subtree violation");

    case X509_V_ERR_SUBTREE_MINMAX:

        return ("name constraints minimum and maximum not supported");

    case X509_V_ERR_UNSUPPORTED_CONSTRAINT_TYPE:

        return ("unsupported name constraint type");

    case X509_V_ERR_UNSUPPORTED_CONSTRAINT_SYNTAX:

        return ("unsupported or invalid name constraint syntax");

    case X509_V_ERR_UNSUPPORTED_NAME_SYNTAX:

        return ("unsupported or invalid name syntax");

    case X509_V_ERR_CRL_PATH_VALIDATION_ERROR:

        return ("CRL path validation error");

    case X509_V_ERR_SUITE_B_INVALID_VERSION:

        return ("Suite B: certificate version invalid");

    case X509_V_ERR_SUITE_B_INVALID_ALGORITHM:

        return ("Suite B: invalid public key algorithm");

    case X509_V_ERR_SUITE_B_INVALID_CURVE:

        return ("Suite B: invalid ECC curve");

    case X509_V_ERR_SUITE_B_INVALID_SIGNATURE_ALGORITHM:

        return ("Suite B: invalid signature algorithm");

    case X509_V_ERR_SUITE_B_LOS_NOT_ALLOWED:

        return ("Suite B: curve not allowed for this LOS");

    case X509_V_ERR_SUITE_B_CANNOT_SIGN_P_384_WITH_P_256:

        return ("Suite B: cannot sign P-384 with P-256");

    case X509_V_ERR_HOSTNAME_MISMATCH:

        return ("Hostname mismatch");

    case X509_V_ERR_EMAIL_MISMATCH:

        return ("Email address mismatch");

    case X509_V_ERR_IP_ADDRESS_MISMATCH:

        return ("IP address mismatch");

    case X509_V_ERR_INVALID_CALL:

        return ("Invalid certificate verification context");

    case X509_V_ERR_STORE_LOOKUP:

        return ("Issuer certificate lookup error");

    case X509_V_ERR_PROXY_SUBJECT_NAME_VIOLATION:

        return ("proxy subject name violation");

    default:

        BIO_snprintf(buf, sizeof buf, "error number %ld", n);

        return (buf);

    }

}