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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/cert/x509_certificate.h" | |
| 6 | |
| 7 #include <cert.h> | |
| 8 #include <cryptohi.h> | |
| 9 #include <keyhi.h> | |
| 10 #include <nss.h> | |
| 11 #include <pk11pub.h> | |
| 12 #include <prtime.h> | |
| 13 #include <seccomon.h> | |
| 14 #include <secder.h> | |
| 15 #include <sechash.h> | |
| 16 | |
| 17 #include "base/logging.h" | |
| 18 #include "base/memory/scoped_ptr.h" | |
| 19 #include "base/pickle.h" | |
| 20 #include "base/strings/stringprintf.h" | |
| 21 #include "base/time/time.h" | |
| 22 #include "crypto/nss_util.h" | |
| 23 #include "crypto/scoped_nss_types.h" | |
| 24 #include "net/cert/x509_util_nss.h" | |
| 25 | |
| 26 namespace net { | |
| 27 | |
| 28 void X509Certificate::Initialize() { | |
| 29 x509_util::ParsePrincipal(&cert_handle_->subject, &subject_); | |
| 30 x509_util::ParsePrincipal(&cert_handle_->issuer, &issuer_); | |
| 31 | |
| 32 x509_util::ParseDate(&cert_handle_->validity.notBefore, &valid_start_); | |
| 33 x509_util::ParseDate(&cert_handle_->validity.notAfter, &valid_expiry_); | |
| 34 | |
| 35 fingerprint_ = CalculateFingerprint(cert_handle_); | |
| 36 ca_fingerprint_ = CalculateCAFingerprint(intermediate_ca_certs_); | |
| 37 | |
| 38 serial_number_ = x509_util::ParseSerialNumber(cert_handle_); | |
| 39 } | |
| 40 | |
| 41 // static | |
| 42 X509Certificate* X509Certificate::CreateFromBytesWithNickname( | |
| 43 const char* data, | |
| 44 int length, | |
| 45 const char* nickname) { | |
| 46 OSCertHandle cert_handle = CreateOSCertHandleFromBytesWithNickname(data, | |
| 47 length, | |
| 48 nickname); | |
| 49 if (!cert_handle) | |
| 50 return NULL; | |
| 51 | |
| 52 X509Certificate* cert = CreateFromHandle(cert_handle, OSCertHandles()); | |
| 53 FreeOSCertHandle(cert_handle); | |
| 54 | |
| 55 if (nickname) | |
| 56 cert->default_nickname_ = nickname; | |
| 57 | |
| 58 return cert; | |
| 59 } | |
| 60 | |
| 61 std::string X509Certificate::GetDefaultNickname(CertType type) const { | |
| 62 if (!default_nickname_.empty()) | |
| 63 return default_nickname_; | |
| 64 | |
| 65 std::string result; | |
| 66 if (type == USER_CERT && cert_handle_->slot) { | |
| 67 // Find the private key for this certificate and see if it has a | |
| 68 // nickname. If there is a private key, and it has a nickname, then | |
| 69 // return that nickname. | |
| 70 SECKEYPrivateKey* private_key = PK11_FindPrivateKeyFromCert( | |
| 71 cert_handle_->slot, | |
| 72 cert_handle_, | |
| 73 NULL); // wincx | |
| 74 if (private_key) { | |
| 75 char* private_key_nickname = PK11_GetPrivateKeyNickname(private_key); | |
| 76 if (private_key_nickname) { | |
| 77 result = private_key_nickname; | |
| 78 PORT_Free(private_key_nickname); | |
| 79 SECKEY_DestroyPrivateKey(private_key); | |
| 80 return result; | |
| 81 } | |
| 82 SECKEY_DestroyPrivateKey(private_key); | |
| 83 } | |
| 84 } | |
| 85 | |
| 86 switch (type) { | |
| 87 case CA_CERT: { | |
| 88 char* nickname = CERT_MakeCANickname(cert_handle_); | |
| 89 result = nickname; | |
| 90 PORT_Free(nickname); | |
| 91 break; | |
| 92 } | |
| 93 case USER_CERT: { | |
| 94 std::string subject_name = subject_.GetDisplayName(); | |
| 95 if (subject_name.empty()) { | |
| 96 const char* email = CERT_GetFirstEmailAddress(cert_handle_); | |
| 97 if (email) | |
| 98 subject_name = email; | |
| 99 } | |
| 100 // TODO(gspencer): Internationalize this. It's wrong to assume English | |
| 101 // here. | |
| 102 result = base::StringPrintf("%s's %s ID", subject_name.c_str(), | |
| 103 issuer_.GetDisplayName().c_str()); | |
| 104 break; | |
| 105 } | |
| 106 case SERVER_CERT: | |
| 107 result = subject_.GetDisplayName(); | |
| 108 break; | |
| 109 case OTHER_CERT: | |
| 110 default: | |
| 111 break; | |
| 112 } | |
| 113 return result; | |
| 114 } | |
| 115 | |
| 116 void X509Certificate::GetSubjectAltName( | |
| 117 std::vector<std::string>* dns_names, | |
| 118 std::vector<std::string>* ip_addrs) const { | |
| 119 x509_util::GetSubjectAltName(cert_handle_, dns_names, ip_addrs); | |
| 120 } | |
| 121 | |
| 122 bool X509Certificate::IsIssuedByEncoded( | |
| 123 const std::vector<std::string>& valid_issuers) { | |
| 124 // Get certificate chain as scoped list of CERTCertificate objects. | |
| 125 std::vector<CERTCertificate*> cert_chain; | |
| 126 cert_chain.push_back(cert_handle_); | |
| 127 for (size_t n = 0; n < intermediate_ca_certs_.size(); ++n) { | |
| 128 cert_chain.push_back(intermediate_ca_certs_[n]); | |
| 129 } | |
| 130 // Convert encoded issuers to scoped CERTName* list. | |
| 131 std::vector<CERTName*> issuers; | |
| 132 crypto::ScopedPLArenaPool arena(PORT_NewArena(DER_DEFAULT_CHUNKSIZE)); | |
| 133 if (!x509_util::GetIssuersFromEncodedList(valid_issuers, | |
| 134 arena.get(), | |
| 135 &issuers)) { | |
| 136 return false; | |
| 137 } | |
| 138 return x509_util::IsCertificateIssuedBy(cert_chain, issuers); | |
| 139 } | |
| 140 | |
| 141 // static | |
| 142 bool X509Certificate::GetDEREncoded(X509Certificate::OSCertHandle cert_handle, | |
| 143 std::string* encoded) { | |
| 144 if (!cert_handle || !cert_handle->derCert.len) | |
| 145 return false; | |
| 146 encoded->assign(reinterpret_cast<char*>(cert_handle->derCert.data), | |
| 147 cert_handle->derCert.len); | |
| 148 return true; | |
| 149 } | |
| 150 | |
| 151 // static | |
| 152 bool X509Certificate::IsSameOSCert(X509Certificate::OSCertHandle a, | |
| 153 X509Certificate::OSCertHandle b) { | |
| 154 DCHECK(a && b); | |
| 155 if (a == b) | |
| 156 return true; | |
| 157 return a->derCert.len == b->derCert.len && | |
| 158 memcmp(a->derCert.data, b->derCert.data, a->derCert.len) == 0; | |
| 159 } | |
| 160 | |
| 161 // static | |
| 162 X509Certificate::OSCertHandle X509Certificate::CreateOSCertHandleFromBytes( | |
| 163 const char* data, int length) { | |
| 164 return CreateOSCertHandleFromBytesWithNickname(data, length, NULL); | |
| 165 } | |
| 166 | |
| 167 // static | |
| 168 X509Certificate::OSCertHandle | |
| 169 X509Certificate::CreateOSCertHandleFromBytesWithNickname( | |
| 170 const char* data, | |
| 171 int length, | |
| 172 const char* nickname) { | |
| 173 if (length < 0) | |
| 174 return NULL; | |
| 175 | |
| 176 crypto::EnsureNSSInit(); | |
| 177 | |
| 178 if (!NSS_IsInitialized()) | |
| 179 return NULL; | |
| 180 | |
| 181 SECItem der_cert; | |
| 182 der_cert.data = reinterpret_cast<unsigned char*>(const_cast<char*>(data)); | |
| 183 der_cert.len = length; | |
| 184 der_cert.type = siDERCertBuffer; | |
| 185 | |
| 186 // Parse into a certificate structure. | |
| 187 return CERT_NewTempCertificate(CERT_GetDefaultCertDB(), &der_cert, | |
| 188 const_cast<char*>(nickname), | |
| 189 PR_FALSE, PR_TRUE); | |
| 190 } | |
| 191 | |
| 192 // static | |
| 193 X509Certificate::OSCertHandles X509Certificate::CreateOSCertHandlesFromBytes( | |
| 194 const char* data, | |
| 195 int length, | |
| 196 Format format) { | |
| 197 return x509_util::CreateOSCertHandlesFromBytes(data, length, format); | |
| 198 } | |
| 199 | |
| 200 // static | |
| 201 X509Certificate::OSCertHandle X509Certificate::DupOSCertHandle( | |
| 202 OSCertHandle cert_handle) { | |
| 203 return CERT_DupCertificate(cert_handle); | |
| 204 } | |
| 205 | |
| 206 // static | |
| 207 void X509Certificate::FreeOSCertHandle(OSCertHandle cert_handle) { | |
| 208 CERT_DestroyCertificate(cert_handle); | |
| 209 } | |
| 210 | |
| 211 // static | |
| 212 SHA1HashValue X509Certificate::CalculateFingerprint( | |
| 213 OSCertHandle cert) { | |
| 214 SHA1HashValue sha1; | |
| 215 memset(sha1.data, 0, sizeof(sha1.data)); | |
| 216 | |
| 217 DCHECK(NULL != cert->derCert.data); | |
| 218 DCHECK_NE(0U, cert->derCert.len); | |
| 219 | |
| 220 SECStatus rv = HASH_HashBuf(HASH_AlgSHA1, sha1.data, | |
| 221 cert->derCert.data, cert->derCert.len); | |
| 222 DCHECK_EQ(SECSuccess, rv); | |
| 223 | |
| 224 return sha1; | |
| 225 } | |
| 226 | |
| 227 // static | |
| 228 SHA256HashValue X509Certificate::CalculateFingerprint256(OSCertHandle cert) { | |
| 229 SHA256HashValue sha256; | |
| 230 memset(sha256.data, 0, sizeof(sha256.data)); | |
| 231 | |
| 232 DCHECK(NULL != cert->derCert.data); | |
| 233 DCHECK_NE(0U, cert->derCert.len); | |
| 234 | |
| 235 SECStatus rv = HASH_HashBuf( | |
| 236 HASH_AlgSHA256, sha256.data, cert->derCert.data, cert->derCert.len); | |
| 237 DCHECK_EQ(SECSuccess, rv); | |
| 238 | |
| 239 return sha256; | |
| 240 } | |
| 241 | |
| 242 // static | |
| 243 SHA1HashValue X509Certificate::CalculateCAFingerprint( | |
| 244 const OSCertHandles& intermediates) { | |
| 245 SHA1HashValue sha1; | |
| 246 memset(sha1.data, 0, sizeof(sha1.data)); | |
| 247 | |
| 248 HASHContext* sha1_ctx = HASH_Create(HASH_AlgSHA1); | |
| 249 if (!sha1_ctx) | |
| 250 return sha1; | |
| 251 HASH_Begin(sha1_ctx); | |
| 252 for (size_t i = 0; i < intermediates.size(); ++i) { | |
| 253 CERTCertificate* ca_cert = intermediates[i]; | |
| 254 HASH_Update(sha1_ctx, ca_cert->derCert.data, ca_cert->derCert.len); | |
| 255 } | |
| 256 unsigned int result_len; | |
| 257 HASH_End(sha1_ctx, sha1.data, &result_len, HASH_ResultLenContext(sha1_ctx)); | |
| 258 HASH_Destroy(sha1_ctx); | |
| 259 | |
| 260 return sha1; | |
| 261 } | |
| 262 | |
| 263 // static | |
| 264 X509Certificate::OSCertHandle | |
| 265 X509Certificate::ReadOSCertHandleFromPickle(PickleIterator* pickle_iter) { | |
| 266 return x509_util::ReadOSCertHandleFromPickle(pickle_iter); | |
| 267 } | |
| 268 | |
| 269 // static | |
| 270 bool X509Certificate::WriteOSCertHandleToPickle(OSCertHandle cert_handle, | |
| 271 Pickle* pickle) { | |
| 272 return pickle->WriteData( | |
| 273 reinterpret_cast<const char*>(cert_handle->derCert.data), | |
| 274 cert_handle->derCert.len); | |
| 275 } | |
| 276 | |
| 277 // static | |
| 278 void X509Certificate::GetPublicKeyInfo(OSCertHandle cert_handle, | |
| 279 size_t* size_bits, | |
| 280 PublicKeyType* type) { | |
| 281 x509_util::GetPublicKeyInfo(cert_handle, size_bits, type); | |
| 282 } | |
| 283 | |
| 284 // static | |
| 285 bool X509Certificate::IsSelfSigned(OSCertHandle cert_handle) { | |
| 286 crypto::ScopedSECKEYPublicKey public_key(CERT_ExtractPublicKey(cert_handle)); | |
| 287 if (!public_key.get()) | |
| 288 return false; | |
| 289 return SECSuccess == CERT_VerifySignedDataWithPublicKey( | |
| 290 &cert_handle->signatureWrap, public_key.get(), NULL); | |
| 291 } | |
| 292 | |
| 293 } // namespace net | |
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