Support x509 certificate on iOS.

net/base/x509_certificate_nss.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "net/base/x509_certificate.h"
 
 #include <cert.h>
 #include <cryptohi.h>
 #include <keyhi.h>
 #include <nss.h>
 #include <pk11pub.h>
 #include <prtime.h>
 #include <secder.h>
 #include <sechash.h>
 
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/pickle.h"
 #include "base/time.h"
 #include "crypto/nss_util.h"
 #include "crypto/rsa_private_key.h"
-#include "crypto/scoped_nss_types.h"
 #include "net/base/x509_util_nss.h"
 
 namespace net {
 
-namespace {
+void X509Certificate::Initialize() {
+  x509_util::ParsePrincipal(&cert_handle_->subject, &subject_);
+  x509_util::ParsePrincipal(&cert_handle_->issuer, &issuer_);
 
-void ParsePrincipal(CERTName* name,
-                    CertPrincipal* principal) {
-  typedef char* (*CERTGetNameFunc)(CERTName* name);
-
-  // TODO(jcampan): add business_category and serial_number.
-  // TODO(wtc): NSS has the CERT_GetOrgName, CERT_GetOrgUnitName, and
-  // CERT_GetDomainComponentName functions, but they return only the most
-  // general (the first) RDN.  NSS doesn't have a function for the street
-  // address.
-  static const SECOidTag kOIDs[] = {
-      SEC_OID_AVA_STREET_ADDRESS,
-      SEC_OID_AVA_ORGANIZATION_NAME,
-      SEC_OID_AVA_ORGANIZATIONAL_UNIT_NAME,
-      SEC_OID_AVA_DC };
-
-  std::vector<std::string>* values[] = {
-      &principal->street_addresses,
-      &principal->organization_names,
-      &principal->organization_unit_names,
-      &principal->domain_components };
-  DCHECK(arraysize(kOIDs) == arraysize(values));
-
-  CERTRDN** rdns = name->rdns;
-  for (size_t rdn = 0; rdns[rdn]; ++rdn) {
-    CERTAVA** avas = rdns[rdn]->avas;
-    for (size_t pair = 0; avas[pair] != 0; ++pair) {
-      SECOidTag tag = CERT_GetAVATag(avas[pair]);
-      for (size_t oid = 0; oid < arraysize(kOIDs); ++oid) {
-        if (kOIDs[oid] == tag) {
-          SECItem* decode_item = CERT_DecodeAVAValue(&avas[pair]->value);
-          if (!decode_item)
-            break;
-          // TODO(wtc): Pass decode_item to CERT_RFC1485_EscapeAndQuote.
-          std::string value(reinterpret_cast<char*>(decode_item->data),
-                            decode_item->len);
-          values[oid]->push_back(value);
-          SECITEM_FreeItem(decode_item, PR_TRUE);
-          break;
-        }
-      }
-    }
-  }
-
-  // Get CN, L, S, and C.
-  CERTGetNameFunc get_name_funcs[4] = {
-      CERT_GetCommonName, CERT_GetLocalityName,
-      CERT_GetStateName, CERT_GetCountryName };
-  std::string* single_values[4] = {
-      &principal->common_name, &principal->locality_name,
-      &principal->state_or_province_name, &principal->country_name };
-  for (size_t i = 0; i < arraysize(get_name_funcs); ++i) {
-    char* value = get_name_funcs[i](name);
-    if (value) {
-      single_values[i]->assign(value);
-      PORT_Free(value);
-    }
-  }
-}
-
-void ParseDate(SECItem* der_date, base::Time* result) {
-  PRTime prtime;
-  SECStatus rv = DER_DecodeTimeChoice(&prtime, der_date);
-  DCHECK_EQ(SECSuccess, rv);
-  *result = crypto::PRTimeToBaseTime(prtime);
-}
-
-SECStatus PR_CALLBACK
-CollectCertsCallback(void* arg, SECItem** certs, int num_certs) {
-  X509Certificate::OSCertHandles* results =
-      reinterpret_cast<X509Certificate::OSCertHandles*>(arg);
-
-  for (int i = 0; i < num_certs; ++i) {
-    X509Certificate::OSCertHandle handle =
-        X509Certificate::CreateOSCertHandleFromBytes(
-            reinterpret_cast<char*>(certs[i]->data), certs[i]->len);
-    if (handle)
-      results->push_back(handle);
-  }
-
-  return SECSuccess;
-}
-
-}  // namespace
-
-void X509Certificate::Initialize() {
-  ParsePrincipal(&cert_handle_->subject, &subject_);
-  ParsePrincipal(&cert_handle_->issuer, &issuer_);
-
-  ParseDate(&cert_handle_->validity.notBefore, &valid_start_);
-  ParseDate(&cert_handle_->validity.notAfter, &valid_expiry_);
+  x509_util::ParseDate(&cert_handle_->validity.notBefore, &valid_start_);
+  x509_util::ParseDate(&cert_handle_->validity.notAfter, &valid_expiry_);
 
   fingerprint_ = CalculateFingerprint(cert_handle_);
   ca_fingerprint_ = CalculateCAFingerprint(intermediate_ca_certs_);
 
-  serial_number_ = std::string(
-      reinterpret_cast<char*>(cert_handle_->serialNumber.data),
-      cert_handle_->serialNumber.len);
+  serial_number_ = x509_util::ParseSerialNumber(cert_handle_);
 }
 
 // static
 X509Certificate* X509Certificate::CreateFromBytesWithNickname(
     const char* data,
     int length,
     const char* nickname) {
   OSCertHandle cert_handle = CreateOSCertHandleFromBytesWithNickname(data,
                                                                      length,
                                                                      nickname);
@@ skipping 73 matching lines @@
   return result;
 }
 
 // static
 X509Certificate* X509Certificate::CreateSelfSigned(
     crypto::RSAPrivateKey* key,
     const std::string& subject,
     uint32 serial_number,
     base::TimeDelta valid_duration) {
   DCHECK(key);
-
   base::Time not_valid_before = base::Time::Now();
   base::Time not_valid_after = not_valid_before + valid_duration;
   CERTCertificate* cert = x509_util::CreateSelfSignedCert(key->public_key(),
                                                           key->key(),
                                                           subject,
                                                           serial_number,
                                                           not_valid_before,
                                                           not_valid_after);
-
   if (!cert)
     return NULL;
 
   X509Certificate* x509_cert = X509Certificate::CreateFromHandle(
       cert, X509Certificate::OSCertHandles());
   CERT_DestroyCertificate(cert);
   return x509_cert;
 }
 
 void X509Certificate::GetSubjectAltName(
     std::vector<std::string>* dns_names,
     std::vector<std::string>* ip_addrs) const {
-  if (dns_names)
-    dns_names->clear();
-  if (ip_addrs)
-    ip_addrs->clear();
-
-  SECItem alt_name;
-  SECStatus rv = CERT_FindCertExtension(cert_handle_,
-                                        SEC_OID_X509_SUBJECT_ALT_NAME,
-                                        &alt_name);
-  if (rv != SECSuccess)
-    return;
-
-  PLArenaPool* arena = PORT_NewArena(DER_DEFAULT_CHUNKSIZE);
-  DCHECK(arena != NULL);
-
-  CERTGeneralName* alt_name_list;
-  alt_name_list = CERT_DecodeAltNameExtension(arena, &alt_name);
-  SECITEM_FreeItem(&alt_name, PR_FALSE);
-
-  CERTGeneralName* name = alt_name_list;
-  while (name) {
-    // DNSName and IPAddress are encoded as IA5String and OCTET STRINGs
-    // respectively, both of which can be byte copied from
-    // SECItemType::data into the appropriate output vector.
-    if (dns_names && name->type == certDNSName) {
-      dns_names->push_back(std::string(
-          reinterpret_cast<char*>(name->name.other.data),
-          name->name.other.len));
-    } else if (ip_addrs && name->type == certIPAddress) {
-      ip_addrs->push_back(std::string(
-          reinterpret_cast<char*>(name->name.other.data),
-          name->name.other.len));
-    }
-    name = CERT_GetNextGeneralName(name);
-    if (name == alt_name_list)
-      break;
-  }
-  PORT_FreeArena(arena, PR_FALSE);
+  x509_util::GetSubjectAltName(cert_handle_, dns_names, ip_addrs);
 }
 
 bool X509Certificate::VerifyNameMatch(const std::string& hostname) const {
   return CERT_VerifyCertName(cert_handle_, hostname.c_str()) == SECSuccess;
 }
 
 // static
 bool X509Certificate::GetDEREncoded(X509Certificate::OSCertHandle cert_handle,
                                     std::string* encoded) {
   if (!cert_handle->derCert.len)
@@ skipping 42 matching lines @@
   return CERT_NewTempCertificate(CERT_GetDefaultCertDB(), &der_cert,
                                  const_cast<char*>(nickname),
                                  PR_FALSE, PR_TRUE);
 }
 
 // static
 X509Certificate::OSCertHandles X509Certificate::CreateOSCertHandlesFromBytes(
     const char* data,
     int length,
     Format format) {
-  OSCertHandles results;
-  if (length < 0)
-    return results;
-
-  crypto::EnsureNSSInit();
-
-  if (!NSS_IsInitialized())
-    return results;
-
-  switch (format) {
-    case FORMAT_SINGLE_CERTIFICATE: {
-      OSCertHandle handle = CreateOSCertHandleFromBytes(data, length);
-      if (handle)
-        results.push_back(handle);
-      break;
-    }
-    case FORMAT_PKCS7: {
-      // Make a copy since CERT_DecodeCertPackage may modify it
-      std::vector<char> data_copy(data, data + length);
-
-      SECStatus result = CERT_DecodeCertPackage(&data_copy[0],
-          length, CollectCertsCallback, &results);
-      if (result != SECSuccess)
-        results.clear();
-      break;
-    }
-    default:
-      NOTREACHED() << "Certificate format " << format << " unimplemented";
-      break;
-  }
-
-  return results;
+  return x509_util::CreateOSCertHandlesFromBytes(data, length, format);
 }
 
 // static
 X509Certificate::OSCertHandle X509Certificate::DupOSCertHandle(
     OSCertHandle cert_handle) {
   return CERT_DupCertificate(cert_handle);
 }
 
 // static
 void X509Certificate::FreeOSCertHandle(OSCertHandle cert_handle) {
@@ skipping 33 matching lines @@
   unsigned int result_len;
   HASH_End(sha1_ctx, sha1.data, &result_len, HASH_ResultLenContext(sha1_ctx));
   HASH_Destroy(sha1_ctx);
 
   return sha1;
 }
 
 // static
 X509Certificate::OSCertHandle
 X509Certificate::ReadOSCertHandleFromPickle(PickleIterator* pickle_iter) {
-  const char* data;
-  int length;
-  if (!pickle_iter->ReadData(&data, &length))
-    return NULL;
-
-  return CreateOSCertHandleFromBytes(data, length);
+  return x509_util::ReadOSCertHandleFromPickle(pickle_iter);
 }
 
 // static
 bool X509Certificate::WriteOSCertHandleToPickle(OSCertHandle cert_handle,
                                                 Pickle* pickle) {
   return pickle->WriteData(
       reinterpret_cast<const char*>(cert_handle->derCert.data),
       cert_handle->derCert.len);
 }
 
 // static
 void X509Certificate::GetPublicKeyInfo(OSCertHandle cert_handle,
                                        size_t* size_bits,
                                        PublicKeyType* type) {
-  // Since we might fail, set the output parameters to default values first.
-  *type = kPublicKeyTypeUnknown;
-  *size_bits = 0;
-
-  crypto::ScopedSECKEYPublicKey key(CERT_ExtractPublicKey(cert_handle));
-  if (!key.get())
-    return;
-
-  *size_bits = SECKEY_PublicKeyStrengthInBits(key.get());
-
-  switch (key->keyType) {
-    case rsaKey:
-      *type = kPublicKeyTypeRSA;
-      break;
-    case dsaKey:
-      *type = kPublicKeyTypeDSA;
-      break;
-    case dhKey:
-      *type = kPublicKeyTypeDH;
-      break;
-    case ecKey:
-      *type = kPublicKeyTypeECDSA;
-      break;
-    default:
-      *type = kPublicKeyTypeUnknown;
-      *size_bits = 0;
-      break;
-  }
+  x509_util::GetPublicKeyInfo(cert_handle, size_bits, type);
 }
 
 }  // namespace net