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      1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #include "net/cert/cert_status_flags.h"
      6 
      7 #include "base/logging.h"
      8 #include "net/base/net_errors.h"
      9 
     10 namespace net {
     11 
     12 bool IsCertStatusMinorError(CertStatus cert_status) {
     13   static const CertStatus kMinorErrors =
     14       CERT_STATUS_UNABLE_TO_CHECK_REVOCATION |
     15       CERT_STATUS_NO_REVOCATION_MECHANISM;
     16   cert_status &= CERT_STATUS_ALL_ERRORS;
     17   return cert_status != 0 && (cert_status & ~kMinorErrors) == 0;
     18 }
     19 
     20 CertStatus MapNetErrorToCertStatus(int error) {
     21   switch (error) {
     22     case ERR_CERT_COMMON_NAME_INVALID:
     23       return CERT_STATUS_COMMON_NAME_INVALID;
     24     case ERR_CERT_DATE_INVALID:
     25       return CERT_STATUS_DATE_INVALID;
     26     case ERR_CERT_AUTHORITY_INVALID:
     27       return CERT_STATUS_AUTHORITY_INVALID;
     28     case ERR_CERT_NO_REVOCATION_MECHANISM:
     29       return CERT_STATUS_NO_REVOCATION_MECHANISM;
     30     case ERR_CERT_UNABLE_TO_CHECK_REVOCATION:
     31       return CERT_STATUS_UNABLE_TO_CHECK_REVOCATION;
     32     case ERR_CERT_REVOKED:
     33       return CERT_STATUS_REVOKED;
     34     // We added the ERR_CERT_CONTAINS_ERRORS error code when we were using
     35     // WinInet, but we never figured out how it differs from ERR_CERT_INVALID.
     36     // We should not use ERR_CERT_CONTAINS_ERRORS in new code.
     37     case ERR_CERT_CONTAINS_ERRORS:
     38       NOTREACHED();
     39       // Falls through.
     40     case ERR_CERT_INVALID:
     41       return CERT_STATUS_INVALID;
     42     case ERR_CERT_WEAK_SIGNATURE_ALGORITHM:
     43       return CERT_STATUS_WEAK_SIGNATURE_ALGORITHM;
     44     case ERR_CERT_NON_UNIQUE_NAME:
     45       return CERT_STATUS_NON_UNIQUE_NAME;
     46     case ERR_CERT_WEAK_KEY:
     47       return CERT_STATUS_WEAK_KEY;
     48     case ERR_SSL_PINNED_KEY_NOT_IN_CERT_CHAIN:
     49       return CERT_STATUS_PINNED_KEY_MISSING;
     50     case ERR_CERT_NAME_CONSTRAINT_VIOLATION:
     51       return CERT_STATUS_NAME_CONSTRAINT_VIOLATION;
     52     default:
     53       return 0;
     54   }
     55 }
     56 
     57 int MapCertStatusToNetError(CertStatus cert_status) {
     58   // A certificate may have multiple errors.  We report the most
     59   // serious error.
     60 
     61   // Unrecoverable errors
     62   if (cert_status & CERT_STATUS_REVOKED)
     63     return ERR_CERT_REVOKED;
     64   if (cert_status & CERT_STATUS_INVALID)
     65     return ERR_CERT_INVALID;
     66   if (cert_status & CERT_STATUS_PINNED_KEY_MISSING)
     67     return ERR_SSL_PINNED_KEY_NOT_IN_CERT_CHAIN;
     68 
     69   // Recoverable errors
     70   if (cert_status & CERT_STATUS_AUTHORITY_INVALID)
     71     return ERR_CERT_AUTHORITY_INVALID;
     72   if (cert_status & CERT_STATUS_COMMON_NAME_INVALID)
     73     return ERR_CERT_COMMON_NAME_INVALID;
     74   // CERT_STATUS_NON_UNIQUE_NAME is intentionally not mapped to an error.
     75   // It is treated as just a warning and used to degrade the SSL UI.
     76   if (cert_status & CERT_STATUS_NAME_CONSTRAINT_VIOLATION)
     77     return ERR_CERT_NAME_CONSTRAINT_VIOLATION;
     78   if (cert_status & CERT_STATUS_WEAK_SIGNATURE_ALGORITHM)
     79     return ERR_CERT_WEAK_SIGNATURE_ALGORITHM;
     80   if (cert_status & CERT_STATUS_WEAK_KEY)
     81     return ERR_CERT_WEAK_KEY;
     82   if (cert_status & CERT_STATUS_DATE_INVALID)
     83     return ERR_CERT_DATE_INVALID;
     84 
     85   // Unknown status.  Give it the benefit of the doubt.
     86   if (cert_status & CERT_STATUS_UNABLE_TO_CHECK_REVOCATION)
     87     return ERR_CERT_UNABLE_TO_CHECK_REVOCATION;
     88   if (cert_status & CERT_STATUS_NO_REVOCATION_MECHANISM)
     89     return ERR_CERT_NO_REVOCATION_MECHANISM;
     90 
     91   NOTREACHED();
     92   return ERR_UNEXPECTED;
     93 }
     94 
     95 }  // namespace net
     96