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1 // Copyright 2013 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/ssl/client_cert_store_nss.h" | |
6 | |
7 #include <nss.h> | |
8 #include <ssl.h> | |
9 | |
10 #include "base/bind.h" | |
11 #include "base/location.h" | |
12 #include "base/logging.h" | |
13 #include "base/memory/scoped_ptr.h" | |
14 #include "base/strings/string_piece.h" | |
15 #include "base/threading/worker_pool.h" | |
16 #include "crypto/nss_crypto_module_delegate.h" | |
17 #include "net/cert/x509_util.h" | |
18 | |
19 namespace net { | |
20 | |
21 ClientCertStoreNSS::ClientCertStoreNSS( | |
22 const PasswordDelegateFactory& password_delegate_factory) | |
23 : password_delegate_factory_(password_delegate_factory) {} | |
24 | |
25 ClientCertStoreNSS::~ClientCertStoreNSS() {} | |
26 | |
27 void ClientCertStoreNSS::GetClientCerts(const SSLCertRequestInfo& request, | |
28 CertificateList* selected_certs, | |
29 const base::Closure& callback) { | |
30 scoped_ptr<crypto::CryptoModuleBlockingPasswordDelegate> password_delegate; | |
31 if (!password_delegate_factory_.is_null()) { | |
32 password_delegate.reset( | |
33 password_delegate_factory_.Run(request.host_and_port)); | |
34 } | |
35 if (base::WorkerPool::PostTaskAndReply( | |
36 FROM_HERE, | |
37 base::Bind(&ClientCertStoreNSS::GetClientCertsOnWorkerThread, | |
38 // Caller is responsible for keeping the ClientCertStore | |
39 // alive until the callback is run. | |
40 base::Unretained(this), | |
41 base::Passed(&password_delegate), | |
42 &request, | |
43 selected_certs), | |
44 callback, | |
45 true)) | |
46 return; | |
47 selected_certs->clear(); | |
48 callback.Run(); | |
49 } | |
50 | |
51 void ClientCertStoreNSS::GetClientCertsImpl(CERTCertList* cert_list, | |
52 const SSLCertRequestInfo& request, | |
53 bool query_nssdb, | |
54 CertificateList* selected_certs) { | |
55 DCHECK(cert_list); | |
56 DCHECK(selected_certs); | |
57 | |
58 selected_certs->clear(); | |
59 | |
60 // Create a "fake" CERTDistNames structure. No public API exists to create | |
61 // one from a list of issuers. | |
62 CERTDistNames ca_names; | |
63 ca_names.arena = NULL; | |
64 ca_names.nnames = 0; | |
65 ca_names.names = NULL; | |
66 ca_names.head = NULL; | |
67 | |
68 std::vector<SECItem> ca_names_items(request.cert_authorities.size()); | |
69 for (size_t i = 0; i < request.cert_authorities.size(); ++i) { | |
70 const std::string& authority = request.cert_authorities[i]; | |
71 ca_names_items[i].type = siBuffer; | |
72 ca_names_items[i].data = | |
73 reinterpret_cast<unsigned char*>(const_cast<char*>(authority.data())); | |
74 ca_names_items[i].len = static_cast<unsigned int>(authority.size()); | |
75 } | |
76 ca_names.nnames = static_cast<int>(ca_names_items.size()); | |
77 if (!ca_names_items.empty()) | |
78 ca_names.names = &ca_names_items[0]; | |
79 | |
80 size_t num_raw = 0; | |
81 for (CERTCertListNode* node = CERT_LIST_HEAD(cert_list); | |
82 !CERT_LIST_END(node, cert_list); | |
83 node = CERT_LIST_NEXT(node)) { | |
84 ++num_raw; | |
85 // Only offer unexpired certificates. | |
86 if (CERT_CheckCertValidTimes(node->cert, PR_Now(), PR_TRUE) != | |
87 secCertTimeValid) { | |
88 DVLOG(2) << "skipped expired cert: " | |
89 << base::StringPiece(node->cert->nickname); | |
90 continue; | |
91 } | |
92 | |
93 scoped_refptr<X509Certificate> cert = X509Certificate::CreateFromHandle( | |
94 node->cert, X509Certificate::OSCertHandles()); | |
95 | |
96 // Check if the certificate issuer is allowed by the server. | |
97 if (request.cert_authorities.empty() || | |
98 (!query_nssdb && | |
99 cert->IsIssuedByEncoded(request.cert_authorities)) || | |
100 (query_nssdb && | |
101 NSS_CmpCertChainWCANames(node->cert, &ca_names) == SECSuccess)) { | |
102 DVLOG(2) << "matched cert: " << base::StringPiece(node->cert->nickname); | |
103 selected_certs->push_back(cert); | |
104 } | |
105 else | |
106 DVLOG(2) << "skipped non-matching cert: " | |
107 << base::StringPiece(node->cert->nickname); | |
108 } | |
109 DVLOG(2) << "num_raw:" << num_raw | |
110 << " num_selected:" << selected_certs->size(); | |
111 | |
112 std::sort(selected_certs->begin(), selected_certs->end(), | |
113 x509_util::ClientCertSorter()); | |
114 } | |
115 | |
116 void ClientCertStoreNSS::GetClientCertsOnWorkerThread( | |
117 scoped_ptr<crypto::CryptoModuleBlockingPasswordDelegate> password_delegate, | |
118 const SSLCertRequestInfo* request, | |
119 CertificateList* selected_certs) { | |
120 CERTCertList* client_certs = CERT_FindUserCertsByUsage( | |
121 CERT_GetDefaultCertDB(), | |
122 certUsageSSLClient, | |
123 PR_FALSE, | |
124 PR_FALSE, | |
125 password_delegate.get()); | |
126 // It is ok for a user not to have any client certs. | |
127 if (!client_certs) { | |
128 DVLOG(2) << "No client certs found."; | |
129 selected_certs->clear(); | |
130 return; | |
131 } | |
132 | |
133 GetClientCertsImpl(client_certs, *request, true, selected_certs); | |
134 CERT_DestroyCertList(client_certs); | |
135 } | |
136 | |
137 bool ClientCertStoreNSS::SelectClientCertsForTesting( | |
138 const CertificateList& input_certs, | |
139 const SSLCertRequestInfo& request, | |
140 CertificateList* selected_certs) { | |
141 CERTCertList* cert_list = CERT_NewCertList(); | |
142 if (!cert_list) | |
143 return false; | |
144 for (size_t i = 0; i < input_certs.size(); ++i) { | |
145 CERT_AddCertToListTail( | |
146 cert_list, CERT_DupCertificate(input_certs[i]->os_cert_handle())); | |
147 } | |
148 | |
149 GetClientCertsImpl(cert_list, request, false, selected_certs); | |
150 CERT_DestroyCertList(cert_list); | |
151 return true; | |
152 } | |
153 | |
154 } // namespace net | |
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