1 /* ***** BEGIN LICENSE BLOCK ***** 2 * Version: MPL 1.1/GPL 2.0/LGPL 2.1 3 * 4 * The contents of this file are subject to the Mozilla Public License Version 5 * 1.1 (the "License"); you may not use this file except in compliance with 6 * the License. You may obtain a copy of the License at 7 * http://www.mozilla.org/MPL/ 8 * 9 * Software distributed under the License is distributed on an "AS IS" basis, 10 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License 11 * for the specific language governing rights and limitations under the 12 * License. 13 * 14 * The Original Code is the Netscape security libraries. 15 * 16 * The Initial Developer of the Original Code is 17 * Netscape Communications Corporation. 18 * Portions created by the Initial Developer are Copyright (C) 2000 19 * the Initial Developer. All Rights Reserved. 20 * 21 * Contributor(s): 22 * Ian McGreer <mcgreer (at) netscape.com> 23 * Javier Delgadillo <javi (at) netscape.com> 24 * 25 * Alternatively, the contents of this file may be used under the terms of 26 * either the GNU General Public License Version 2 or later (the "GPL"), or 27 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), 28 * in which case the provisions of the GPL or the LGPL are applicable instead 29 * of those above. If you wish to allow use of your version of this file only 30 * under the terms of either the GPL or the LGPL, and not to allow others to 31 * use your version of this file under the terms of the MPL, indicate your 32 * decision by deleting the provisions above and replace them with the notice 33 * and other provisions required by the GPL or the LGPL. If you do not delete 34 * the provisions above, a recipient may use your version of this file under 35 * the terms of any one of the MPL, the GPL or the LGPL. 36 * 37 * ***** END LICENSE BLOCK ***** */ 38 39 #include "net/third_party/mozilla_security_manager/nsNSSCertificateDB.h" 40 41 #include <cert.h> 42 #include <certdb.h> 43 #include <pk11pub.h> 44 #include <secerr.h> 45 46 #include "base/logging.h" 47 #include "net/base/net_errors.h" 48 #include "net/cert/x509_certificate.h" 49 #include "net/cert/x509_util_nss.h" 50 51 #if !defined(CERTDB_TERMINAL_RECORD) 52 /* NSS 3.13 renames CERTDB_VALID_PEER to CERTDB_TERMINAL_RECORD 53 * and marks CERTDB_VALID_PEER as deprecated. 54 * If we're using an older version, rename it ourselves. 55 */ 56 #define CERTDB_TERMINAL_RECORD CERTDB_VALID_PEER 57 #endif 58 59 namespace mozilla_security_manager { 60 61 // Based on nsNSSCertificateDB::handleCACertDownload, minus the UI bits. 62 bool ImportCACerts(PK11SlotInfo* slot, 63 const net::CertificateList& certificates, 64 net::X509Certificate* root, 65 net::NSSCertDatabase::TrustBits trustBits, 66 net::NSSCertDatabase::ImportCertFailureList* not_imported) { 67 if (!slot || certificates.empty() || !root) 68 return false; 69 70 // Mozilla had some code here to check if a perm version of the cert exists 71 // already and use that, but CERT_NewTempCertificate actually does that 72 // itself, so we skip it here. 73 74 if (!CERT_IsCACert(root->os_cert_handle(), NULL)) { 75 not_imported->push_back(net::NSSCertDatabase::ImportCertFailure( 76 root, net::ERR_IMPORT_CA_CERT_NOT_CA)); 77 } else if (root->os_cert_handle()->isperm) { 78 // Mozilla just returns here, but we continue in case there are other certs 79 // in the list which aren't already imported. 80 // TODO(mattm): should we set/add trust if it differs from the present 81 // settings? 82 not_imported->push_back(net::NSSCertDatabase::ImportCertFailure( 83 root, net::ERR_IMPORT_CERT_ALREADY_EXISTS)); 84 } else { 85 // Mozilla uses CERT_AddTempCertToPerm, however it is privately exported, 86 // and it doesn't take the slot as an argument either. Instead, we use 87 // PK11_ImportCert and CERT_ChangeCertTrust. 88 SECStatus srv = PK11_ImportCert( 89 slot, 90 root->os_cert_handle(), 91 CK_INVALID_HANDLE, 92 net::x509_util::GetUniqueNicknameForSlot( 93 root->GetDefaultNickname(net::CA_CERT), 94 &root->os_cert_handle()->derSubject, 95 slot).c_str(), 96 PR_FALSE /* includeTrust (unused) */); 97 if (srv != SECSuccess) { 98 LOG(ERROR) << "PK11_ImportCert failed with error " << PORT_GetError(); 99 return false; 100 } 101 if (!SetCertTrust(root, net::CA_CERT, trustBits)) 102 return false; 103 } 104 105 PRTime now = PR_Now(); 106 // Import additional delivered certificates that can be verified. 107 // This is sort of merged in from Mozilla's ImportValidCACertsInList. Mozilla 108 // uses CERT_FilterCertListByUsage to filter out non-ca certs, but we want to 109 // keep using X509Certificates, so that we can use them to build the 110 // |not_imported| result. So, we keep using our net::CertificateList and 111 // filter it ourself. 112 for (size_t i = 0; i < certificates.size(); i++) { 113 const scoped_refptr<net::X509Certificate>& cert = certificates[i]; 114 if (cert == root) { 115 // we already processed that one 116 continue; 117 } 118 119 // Mozilla uses CERT_FilterCertListByUsage(certList, certUsageAnyCA, 120 // PR_TRUE). Afaict, checking !CERT_IsCACert on each cert is equivalent. 121 if (!CERT_IsCACert(cert->os_cert_handle(), NULL)) { 122 not_imported->push_back(net::NSSCertDatabase::ImportCertFailure( 123 cert, net::ERR_IMPORT_CA_CERT_NOT_CA)); 124 VLOG(1) << "skipping cert (non-ca)"; 125 continue; 126 } 127 128 if (cert->os_cert_handle()->isperm) { 129 not_imported->push_back(net::NSSCertDatabase::ImportCertFailure( 130 cert, net::ERR_IMPORT_CERT_ALREADY_EXISTS)); 131 VLOG(1) << "skipping cert (perm)"; 132 continue; 133 } 134 135 if (CERT_VerifyCert(CERT_GetDefaultCertDB(), cert->os_cert_handle(), 136 PR_TRUE, certUsageVerifyCA, now, NULL, NULL) != SECSuccess) { 137 // TODO(mattm): use better error code (map PORT_GetError to an appropriate 138 // error value). (maybe make MapSecurityError or MapCertErrorToCertStatus 139 // public.) 140 not_imported->push_back(net::NSSCertDatabase::ImportCertFailure( 141 cert, net::ERR_FAILED)); 142 VLOG(1) << "skipping cert (verify) " << PORT_GetError(); 143 continue; 144 } 145 146 // Mozilla uses CERT_ImportCerts, which doesn't take a slot arg. We use 147 // PK11_ImportCert instead. 148 SECStatus srv = PK11_ImportCert( 149 slot, 150 cert->os_cert_handle(), 151 CK_INVALID_HANDLE, 152 net::x509_util::GetUniqueNicknameForSlot( 153 cert->GetDefaultNickname(net::CA_CERT), 154 &cert->os_cert_handle()->derSubject, 155 slot).c_str(), 156 PR_FALSE /* includeTrust (unused) */); 157 if (srv != SECSuccess) { 158 LOG(ERROR) << "PK11_ImportCert failed with error " << PORT_GetError(); 159 // TODO(mattm): Should we bail or continue on error here? Mozilla doesn't 160 // check error code at all. 161 not_imported->push_back(net::NSSCertDatabase::ImportCertFailure( 162 cert, net::ERR_IMPORT_CA_CERT_FAILED)); 163 } 164 } 165 166 // Any errors importing individual certs will be in listed in |not_imported|. 167 return true; 168 } 169 170 // Based on nsNSSCertificateDB::ImportServerCertificate. 171 bool ImportServerCert( 172 PK11SlotInfo* slot, 173 const net::CertificateList& certificates, 174 net::NSSCertDatabase::TrustBits trustBits, 175 net::NSSCertDatabase::ImportCertFailureList* not_imported) { 176 if (!slot || certificates.empty()) 177 return false; 178 179 for (size_t i = 0; i < certificates.size(); ++i) { 180 const scoped_refptr<net::X509Certificate>& cert = certificates[i]; 181 182 // Mozilla uses CERT_ImportCerts, which doesn't take a slot arg. We use 183 // PK11_ImportCert instead. 184 SECStatus srv = PK11_ImportCert( 185 slot, 186 cert->os_cert_handle(), 187 CK_INVALID_HANDLE, 188 net::x509_util::GetUniqueNicknameForSlot( 189 cert->GetDefaultNickname(net::SERVER_CERT), 190 &cert->os_cert_handle()->derSubject, 191 slot).c_str(), 192 PR_FALSE /* includeTrust (unused) */); 193 if (srv != SECSuccess) { 194 LOG(ERROR) << "PK11_ImportCert failed with error " << PORT_GetError(); 195 not_imported->push_back(net::NSSCertDatabase::ImportCertFailure( 196 cert, net::ERR_IMPORT_SERVER_CERT_FAILED)); 197 continue; 198 } 199 } 200 201 SetCertTrust(certificates[0].get(), net::SERVER_CERT, trustBits); 202 // TODO(mattm): Report SetCertTrust result? Putting in not_imported 203 // wouldn't quite match up since it was imported... 204 205 // Any errors importing individual certs will be in listed in |not_imported|. 206 return true; 207 } 208 209 // Based on nsNSSCertificateDB::SetCertTrust. 210 bool 211 SetCertTrust(const net::X509Certificate* cert, 212 net::CertType type, 213 net::NSSCertDatabase::TrustBits trustBits) 214 { 215 const unsigned kSSLTrustBits = net::NSSCertDatabase::TRUSTED_SSL | 216 net::NSSCertDatabase::DISTRUSTED_SSL; 217 const unsigned kEmailTrustBits = net::NSSCertDatabase::TRUSTED_EMAIL | 218 net::NSSCertDatabase::DISTRUSTED_EMAIL; 219 const unsigned kObjSignTrustBits = net::NSSCertDatabase::TRUSTED_OBJ_SIGN | 220 net::NSSCertDatabase::DISTRUSTED_OBJ_SIGN; 221 if ((trustBits & kSSLTrustBits) == kSSLTrustBits || 222 (trustBits & kEmailTrustBits) == kEmailTrustBits || 223 (trustBits & kObjSignTrustBits) == kObjSignTrustBits) { 224 LOG(ERROR) << "SetCertTrust called with conflicting trust bits " 225 << trustBits; 226 NOTREACHED(); 227 return false; 228 } 229 230 SECStatus srv; 231 CERTCertificate *nsscert = cert->os_cert_handle(); 232 if (type == net::CA_CERT) { 233 // Note that we start with CERTDB_VALID_CA for default trust and explicit 234 // trust, but explicitly distrusted usages will be set to 235 // CERTDB_TERMINAL_RECORD only. 236 CERTCertTrust trust = {CERTDB_VALID_CA, CERTDB_VALID_CA, CERTDB_VALID_CA}; 237 238 if (trustBits & net::NSSCertDatabase::DISTRUSTED_SSL) 239 trust.sslFlags = CERTDB_TERMINAL_RECORD; 240 else if (trustBits & net::NSSCertDatabase::TRUSTED_SSL) 241 trust.sslFlags |= CERTDB_TRUSTED_CA | CERTDB_TRUSTED_CLIENT_CA; 242 243 if (trustBits & net::NSSCertDatabase::DISTRUSTED_EMAIL) 244 trust.emailFlags = CERTDB_TERMINAL_RECORD; 245 else if (trustBits & net::NSSCertDatabase::TRUSTED_EMAIL) 246 trust.emailFlags |= CERTDB_TRUSTED_CA | CERTDB_TRUSTED_CLIENT_CA; 247 248 if (trustBits & net::NSSCertDatabase::DISTRUSTED_OBJ_SIGN) 249 trust.objectSigningFlags = CERTDB_TERMINAL_RECORD; 250 else if (trustBits & net::NSSCertDatabase::TRUSTED_OBJ_SIGN) 251 trust.objectSigningFlags |= CERTDB_TRUSTED_CA | CERTDB_TRUSTED_CLIENT_CA; 252 253 srv = CERT_ChangeCertTrust(CERT_GetDefaultCertDB(), nsscert, &trust); 254 } else if (type == net::SERVER_CERT) { 255 CERTCertTrust trust = {0}; 256 // We only modify the sslFlags, so copy the other flags. 257 CERT_GetCertTrust(nsscert, &trust); 258 trust.sslFlags = 0; 259 260 if (trustBits & net::NSSCertDatabase::DISTRUSTED_SSL) 261 trust.sslFlags |= CERTDB_TERMINAL_RECORD; 262 else if (trustBits & net::NSSCertDatabase::TRUSTED_SSL) 263 trust.sslFlags |= CERTDB_TRUSTED | CERTDB_TERMINAL_RECORD; 264 265 srv = CERT_ChangeCertTrust(CERT_GetDefaultCertDB(), nsscert, &trust); 266 } else { 267 // ignore user and email/unknown certs 268 return true; 269 } 270 if (srv != SECSuccess) 271 LOG(ERROR) << "SetCertTrust failed with error " << PORT_GetError(); 272 return srv == SECSuccess; 273 } 274 275 } // namespace mozilla_security_manager 276
