/*

 * Copyright 1995-2017 The OpenSSL Project Authors. All Rights Reserved.

 *

 * Licensed under the OpenSSL license (the "License").  You may not use

 * this file except in compliance with the License.  You can obtain a copy

 * in the file LICENSE in the source distribution or at

 * https://www.openssl.org/source/license.html

 */

#include <stdio.h>

#include <time.h>

#include <errno.h>

#include "internal/cryptlib.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)

{

    switch ((int)n) {

    case X509_V_OK:

        return "ok";

    case X509_V_ERR_UNSPECIFIED:

        return "unspecified certificate verification error";

    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_CERT_HAS_EXPIRED:

        return "certificate has expired";

    case X509_V_ERR_CRL_NOT_YET_VALID:

        return "CRL is not yet valid";

    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_PATH_LENGTH_EXCEEDED:

        return "path length constraint exceeded";

    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_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_UNHANDLED_CRITICAL_CRL_EXTENSION:

        return "unhandled critical CRL extension";

    case X509_V_ERR_INVALID_NON_CA:

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

    case X509_V_ERR_PROXY_PATH_LENGTH_EXCEEDED:

        return "proxy path length constraint exceeded";

    case X509_V_ERR_KEYUSAGE_NO_DIGITAL_SIGNATURE:

        return "key usage does not include digital signature";

    case X509_V_ERR_PROXY_CERTIFICATES_NOT_ALLOWED:

        return

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

    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_APPLICATION_VERIFICATION:

        return "application verification failure";

    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_PATH_LOOP:

        return "Path Loop";

    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_DANE_NO_MATCH:

        return "No matching DANE TLSA records";

    case X509_V_ERR_EE_KEY_TOO_SMALL:

        return "EE certificate key too weak";

    case X509_V_ERR_CA_KEY_TOO_SMALL:

        return "CA certificate key too weak";

    case X509_V_ERR_CA_MD_TOO_WEAK:

        return "CA signature digest algorithm too weak";

    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_NO_VALID_SCTS:

        return "Certificate Transparency required, but no valid SCTs found";

    case X509_V_ERR_PROXY_SUBJECT_NAME_VIOLATION:

        return "proxy subject name violation";

    case X509_V_ERR_OCSP_VERIFY_NEEDED:

        return "OCSP verification needed";

    case X509_V_ERR_OCSP_VERIFY_FAILED:

        return "OCSP verification failed";

    case X509_V_ERR_OCSP_CERT_UNKNOWN:

        return "OCSP unknown cert";

    case X509_V_ERR_EC_KEY_EXPLICIT_PARAMS:

        return "Certificate public key has explicit ECC parameters";

    default:

        /* Printing an error number into a static buffer is not thread-safe */

        return "unknown certificate verification error";

    }

}