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1 // Copyright (c) 2012 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/base/cert_verify_proc_android.h" | |
6 | |
7 #include <string> | |
8 #include <vector> | |
9 | |
10 #include "base/logging.h" | |
11 #include "net/android/cert_verify_result_android.h" | |
12 #include "net/android/network_library.h" | |
13 #include "net/base/cert_status_flags.h" | |
14 #include "net/base/cert_verify_result.h" | |
15 #include "net/base/net_errors.h" | |
16 #include "net/base/x509_certificate.h" | |
17 | |
18 namespace net { | |
19 | |
20 namespace { | |
21 | |
22 // Returns true if the certificate verification call was successful (regardless | |
23 // of its result), i.e. if |verify_result| was set. Otherwise returns false. | |
24 bool VerifyFromAndroidTrustManager(const std::vector<std::string>& cert_bytes, | |
25 CertVerifyResult* verify_result) { | |
26 // TODO(joth): Fetch the authentication type from SSL rather than hardcode. | |
27 android::CertVerifyResultAndroid android_result = | |
28 android::VerifyX509CertChain(cert_bytes, "RSA"); | |
29 switch (android_result) { | |
30 case android::VERIFY_FAILED: | |
31 return false; | |
32 case android::VERIFY_OK: | |
33 break; | |
34 case android::VERIFY_NO_TRUSTED_ROOT: | |
35 verify_result->cert_status |= CERT_STATUS_AUTHORITY_INVALID; | |
36 break; | |
37 case android::VERIFY_EXPIRED: | |
38 case android::VERIFY_NOT_YET_VALID: | |
39 verify_result->cert_status |= CERT_STATUS_DATE_INVALID; | |
40 break; | |
41 case android::VERIFY_UNABLE_TO_PARSE: | |
42 verify_result->cert_status |= CERT_STATUS_INVALID; | |
43 break; | |
44 default: | |
45 NOTREACHED(); | |
46 verify_result->cert_status |= CERT_STATUS_INVALID; | |
47 break; | |
48 } | |
49 return true; | |
50 } | |
51 | |
52 bool GetChainDEREncodedBytes(X509Certificate* cert, | |
53 std::vector<std::string>* chain_bytes) { | |
54 X509Certificate::OSCertHandle cert_handle = cert->os_cert_handle(); | |
55 X509Certificate::OSCertHandles cert_handles = | |
56 cert->GetIntermediateCertificates(); | |
57 | |
58 // Make sure the peer's own cert is the first in the chain, if it's not | |
59 // already there. | |
60 if (cert_handles.empty() || cert_handles[0] != cert_handle) | |
61 cert_handles.insert(cert_handles.begin(), cert_handle); | |
62 | |
63 chain_bytes->reserve(cert_handles.size()); | |
64 for (X509Certificate::OSCertHandles::const_iterator it = | |
65 cert_handles.begin(); it != cert_handles.end(); ++it) { | |
66 std::string cert_bytes; | |
67 if(!X509Certificate::GetDEREncoded(*it, &cert_bytes)) | |
68 return false; | |
69 chain_bytes->push_back(cert_bytes); | |
70 } | |
71 return true; | |
72 } | |
73 | |
74 } // namespace | |
75 | |
76 CertVerifyProcAndroid::CertVerifyProcAndroid() {} | |
77 | |
78 CertVerifyProcAndroid::~CertVerifyProcAndroid() {} | |
79 | |
80 bool CertVerifyProcAndroid::SupportsAdditionalTrustAnchors() const { | |
81 return false; | |
82 } | |
83 | |
84 int CertVerifyProcAndroid::VerifyInternal( | |
85 X509Certificate* cert, | |
86 const std::string& hostname, | |
87 int flags, | |
88 CRLSet* crl_set, | |
89 const CertificateList& additional_trust_anchors, | |
90 CertVerifyResult* verify_result) { | |
91 if (!cert->VerifyNameMatch(hostname)) | |
92 verify_result->cert_status |= CERT_STATUS_COMMON_NAME_INVALID; | |
93 | |
94 std::vector<std::string> cert_bytes; | |
95 if (!GetChainDEREncodedBytes(cert, &cert_bytes)) | |
96 return ERR_CERT_INVALID; | |
97 if (!VerifyFromAndroidTrustManager(cert_bytes, verify_result)) { | |
98 NOTREACHED(); | |
99 return ERR_FAILED; | |
100 } | |
101 if (IsCertStatusError(verify_result->cert_status)) | |
102 return MapCertStatusToNetError(verify_result->cert_status); | |
103 | |
104 // TODO(ppi): Implement missing functionality: yielding the constructed trust | |
105 // chain, public key hashes of its certificates and |is_issued_by_known_root| | |
106 // flag. All of the above require specific support from the platform, missing | |
107 // in the Java APIs. See also: http://crbug.com/116838 | |
108 | |
109 // Until the required support is available in the platform, we don't know if | |
110 // the trust root at the end of the chain was standard or user-added, so we | |
111 // mark all correctly verified certificates as issued by a known root. | |
112 verify_result->is_issued_by_known_root = true; | |
113 | |
114 return OK; | |
115 } | |
116 | |
117 } // namespace net | |
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