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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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