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
10namespace net {
11
12bool 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
20CertStatus 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
57int 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