text: // Copyright (c) 2011 The Chromium Authors. All rights reserved.
  // Use of this source code is governed by a BSD-style license that can be
  // found in the LICENSE file.
  
  #include "net/cert/cert_status_flags.h"
  
  #include "base/logging.h"
  #include "net/base/net_errors.h"
  
  namespace net {
  
  bool IsCertStatusMinorError(CertStatus cert_status) {
    static const CertStatus kMinorErrors =
        CERT_STATUS_UNABLE_TO_CHECK_REVOCATION |
        CERT_STATUS_NO_REVOCATION_MECHANISM;
    cert_status &= CERT_STATUS_ALL_ERRORS;
    return cert_status != 0 && (cert_status & ~kMinorErrors) == 0;
  }
  
  CertStatus MapNetErrorToCertStatus(int error) {
    switch (error) {
      case ERR_CERT_COMMON_NAME_INVALID:
        return CERT_STATUS_COMMON_NAME_INVALID;
      case ERR_CERT_DATE_INVALID:
        return CERT_STATUS_DATE_INVALID;
      case ERR_CERT_AUTHORITY_INVALID:
        return CERT_STATUS_AUTHORITY_INVALID;
      case ERR_CERT_NO_REVOCATION_MECHANISM:
        return CERT_STATUS_NO_REVOCATION_MECHANISM;
      case ERR_CERT_UNABLE_TO_CHECK_REVOCATION:
        return CERT_STATUS_UNABLE_TO_CHECK_REVOCATION;
      case ERR_CERT_REVOKED:
        return CERT_STATUS_REVOKED;
      // We added the ERR_CERT_CONTAINS_ERRORS error code when we were using
      // WinInet, but we never figured out how it differs from ERR_CERT_INVALID.
      // We should not use ERR_CERT_CONTAINS_ERRORS in new code.
      case ERR_CERT_CONTAINS_ERRORS:
        NOTREACHED();
        // Falls through.
      case ERR_CERT_INVALID:
        return CERT_STATUS_INVALID;
      case ERR_CERT_WEAK_SIGNATURE_ALGORITHM:
        return CERT_STATUS_WEAK_SIGNATURE_ALGORITHM;
      case ERR_CERT_NON_UNIQUE_NAME:
        return CERT_STATUS_NON_UNIQUE_NAME;
      case ERR_CERT_WEAK_KEY:
        return CERT_STATUS_WEAK_KEY;
      case ERR_SSL_PINNED_KEY_NOT_IN_CERT_CHAIN:
        return CERT_STATUS_PINNED_KEY_MISSING;
      case ERR_CERT_NAME_CONSTRAINT_VIOLATION:
        return CERT_STATUS_NAME_CONSTRAINT_VIOLATION;
      default:
        return 0;
    }
  }
  
  int MapCertStatusToNetError(CertStatus cert_status) {
    // A certificate may have multiple errors.  We report the most
    // serious error.
  
    // Unrecoverable errors
    if (cert_status & CERT_STATUS_REVOKED)
      return ERR_CERT_REVOKED;
    if (cert_status & CERT_STATUS_INVALID)
      return ERR_CERT_INVALID;
    if (cert_status & CERT_STATUS_PINNED_KEY_MISSING)
      return ERR_SSL_PINNED_KEY_NOT_IN_CERT_CHAIN;
  
    // Recoverable errors
    if (cert_status & CERT_STATUS_AUTHORITY_INVALID)
      return ERR_CERT_AUTHORITY_INVALID;
    if (cert_status & CERT_STATUS_COMMON_NAME_INVALID)
      return ERR_CERT_COMMON_NAME_INVALID;
    // CERT_STATUS_NON_UNIQUE_NAME is intentionally not mapped to an error.
    // It is treated as just a warning and used to degrade the SSL UI.
    if (cert_status & CERT_STATUS_NAME_CONSTRAINT_VIOLATION)
      return ERR_CERT_NAME_CONSTRAINT_VIOLATION;
    if (cert_status & CERT_STATUS_WEAK_SIGNATURE_ALGORITHM)
      return ERR_CERT_WEAK_SIGNATURE_ALGORITHM;
    if (cert_status & CERT_STATUS_WEAK_KEY)
      return ERR_CERT_WEAK_KEY;
    if (cert_status & CERT_STATUS_DATE_INVALID)
      return ERR_CERT_DATE_INVALID;
  
    // Unknown status.  Give it the benefit of the doubt.
    if (cert_status & CERT_STATUS_UNABLE_TO_CHECK_REVOCATION)
      return ERR_CERT_UNABLE_TO_CHECK_REVOCATION;
    if (cert_status & CERT_STATUS_NO_REVOCATION_MECHANISM)
      return ERR_CERT_NO_REVOCATION_MECHANISM;
  
    NOTREACHED();
    return ERR_UNEXPECTED;
  }
  
  }  // namespace net
  