Removing NSS files and USE_OPENSSL flag

net/cert/x509_util_nss.cc

-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Copyright 2015 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/cert/x509_util_nss.h"
-
 #include <cert.h>  // Must be included before certdb.h
 #include <certdb.h>
 #include <cryptohi.h>
 #include <nss.h>
 #include <pk11pub.h>
 #include <prerror.h>
 #include <secder.h>
 #include <secmod.h>
 #include <secport.h>
 
 #include <memory>
 
 #include "base/debug/leak_annotations.h"
 #include "base/logging.h"
 #include "base/memory/singleton.h"
+#include "base/numerics/safe_conversions.h"
 #include "base/pickle.h"
 #include "base/strings/stringprintf.h"
 #include "crypto/ec_private_key.h"
 #include "crypto/nss_util.h"
 #include "crypto/nss_util_internal.h"
 #include "crypto/rsa_private_key.h"
 #include "crypto/scoped_nss_types.h"
 #include "crypto/third_party/nss/chromium-nss.h"
 #include "net/cert/x509_certificate.h"
 #include "net/cert/x509_util.h"
+#include "net/cert/x509_util_nss.h"
 
 namespace net {
 
 namespace {
 
-// Creates a Certificate object that may be passed to the SignCertificate
-// method to generate an X509 certificate.
-// Returns NULL if an error is encountered in the certificate creation
-// process.
-// Caller responsible for freeing returned certificate object.
-CERTCertificate* CreateCertificate(SECKEYPublicKey* public_key,
-                                   const std::string& subject,
-                                   uint32_t serial_number,
-                                   base::Time not_valid_before,
-                                   base::Time not_valid_after) {
-  // Create info about public key.
-  CERTSubjectPublicKeyInfo* spki =
-      SECKEY_CreateSubjectPublicKeyInfo(public_key);
-  if (!spki)
+// Microsoft User Principal Name: 1.3.6.1.4.1.311.20.2.3
+const uint8_t kUpnOid[] = {0x2b, 0x6,  0x1,  0x4, 0x1,
+                           0x82, 0x37, 0x14, 0x2, 0x3};
+
+// Callback for CERT_DecodeCertPackage(), used in
+// CreateOSCertHandlesFromBytes().
+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;
+}
+
+typedef std::unique_ptr<CERTName,
+                        crypto::NSSDestroyer<CERTName, CERT_DestroyName>>
+    ScopedCERTName;
+
+// Create a new CERTName object from its encoded representation.
+// |arena| is the allocation pool to use.
+// |data| points to a DER-encoded X.509 DistinguishedName.
+// Return a new CERTName pointer on success, or NULL.
+CERTName* CreateCertNameFromEncoded(PLArenaPool* arena,
+                                    const base::StringPiece& data) {
+  if (!arena)
     return NULL;
 
-  // Create the certificate request.
-  CERTName* subject_name =
-      CERT_AsciiToName(const_cast<char*>(subject.c_str()));
-  CERTCertificateRequest* cert_request =
-      CERT_CreateCertificateRequest(subject_name, spki, NULL);
-  SECKEY_DestroySubjectPublicKeyInfo(spki);
-
-  if (!cert_request) {
-    PRErrorCode prerr = PR_GetError();
-    LOG(ERROR) << "Failed to create certificate request: " << prerr;
-    CERT_DestroyName(subject_name);
+  ScopedCERTName name(PORT_ArenaZNew(arena, CERTName));
+  if (!name.get())
     return NULL;
-  }
-
-  CERTValidity* validity = CERT_CreateValidity(
-      crypto::BaseTimeToPRTime(not_valid_before),
-      crypto::BaseTimeToPRTime(not_valid_after));
-  if (!validity) {
-    PRErrorCode prerr = PR_GetError();
-    LOG(ERROR) << "Failed to create certificate validity object: " << prerr;
-    CERT_DestroyName(subject_name);
-    CERT_DestroyCertificateRequest(cert_request);
+
+  SECItem item;
+  item.len = static_cast<unsigned int>(data.length());
+  item.data = reinterpret_cast<unsigned char*>(const_cast<char*>(data.data()));
+
+  SECStatus rv = SEC_ASN1DecodeItem(arena, name.get(),
+                                    SEC_ASN1_GET(CERT_NameTemplate), &item);
+  if (rv != SECSuccess)
     return NULL;
-  }
-  CERTCertificate* cert = CERT_CreateCertificate(serial_number, subject_name,
-                                                 validity, cert_request);
-  if (!cert) {
-    PRErrorCode prerr = PR_GetError();
-    LOG(ERROR) << "Failed to create certificate: " << prerr;
-  }
-
-  // Cleanup for resources used to generate the cert.
-  CERT_DestroyName(subject_name);
-  CERT_DestroyValidity(validity);
-  CERT_DestroyCertificateRequest(cert_request);
-
-  return cert;
-}
-
-SECOidTag ToSECOid(x509_util::DigestAlgorithm alg) {
-  switch (alg) {
-    case x509_util::DIGEST_SHA1:
-      return SEC_OID_SHA1;
-    case x509_util::DIGEST_SHA256:
-      return SEC_OID_SHA256;
-  }
-  return SEC_OID_UNKNOWN;
-}
-
-// Signs a certificate object, with |key| generating a new X509Certificate
-// and destroying the passed certificate object (even when NULL is returned).
-// The logic of this method references SignCert() in NSS utility certutil:
-// http://mxr.mozilla.org/security/ident?i=SignCert.
-// Returns true on success or false if an error is encountered in the
-// certificate signing process.
-bool SignCertificate(
-    CERTCertificate* cert,
-    SECKEYPrivateKey* key,
-    SECOidTag hash_algorithm) {
-  // |arena| is used to encode the cert.
-  PLArenaPool* arena = cert->arena;
-  SECOidTag algo_id = SEC_GetSignatureAlgorithmOidTag(key->keyType,
-                                                      hash_algorithm);
-  if (algo_id == SEC_OID_UNKNOWN)
-    return false;
-
-  SECStatus rv = SECOID_SetAlgorithmID(arena, &cert->signature, algo_id, 0);
+
+  return name.release();
+}
+
+}  // namespace
+
+namespace x509_util {
+
+void ParsePrincipal(CERTName* name, CertPrincipal* principal) {
+// Starting in NSS 3.15, CERTGetNameFunc takes a const CERTName* argument.
+#if NSS_VMINOR >= 15
+  typedef char* (*CERTGetNameFunc)(const CERTName* name);
+#else
+  typedef char* (*CERTGetNameFunc)(CERTName * name);
+#endif
+
+  // 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_EQ(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(const SECItem* der_date, base::Time* result) {
+  PRTime prtime;
+  SECStatus rv = DER_DecodeTimeChoice(&prtime, der_date);
+  DCHECK_EQ(SECSuccess, rv);
+  *result = crypto::PRTimeToBaseTime(prtime);
+}
+
+std::string ParseSerialNumber(const CERTCertificate* certificate) {
+  return std::string(reinterpret_cast<char*>(certificate->serialNumber.data),
+                     certificate->serialNumber.len);
+}
+
+void GetSubjectAltName(CERTCertificate* cert_handle,
+                       std::vector<std::string>* dns_names,
+                       std::vector<std::string>* ip_addrs) {
+  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 false;
-
-  // Generate a cert of version 3.
-  *(cert->version.data) = 2;
-  cert->version.len = 1;
-
-  SECItem der = { siBuffer, NULL, 0 };
-
-  // Use ASN1 DER to encode the cert.
-  void* encode_result = SEC_ASN1EncodeItem(
-      NULL, &der, cert, SEC_ASN1_GET(CERT_CertificateTemplate));
-  if (!encode_result)
-    return false;
-
-  // Allocate space to contain the signed cert.
-  SECItem result = { siBuffer, NULL, 0 };
-
-  // Sign the ASN1 encoded cert and save it to |result|.
-  rv = DerSignData(arena, &result, &der, key, algo_id);
-  PORT_Free(der.data);
-  if (rv != SECSuccess) {
-    DLOG(ERROR) << "DerSignData: " << PORT_GetError();
-    return false;
-  }
-
-  // Save the signed result to the cert.
-  cert->derCert = result;
-
-  return true;
-}
-
-}  // namespace
-
-namespace x509_util {
-
-bool CreateSelfSignedCert(crypto::RSAPrivateKey* key,
-                          DigestAlgorithm alg,
-                          const std::string& subject,
-                          uint32_t serial_number,
-                          base::Time not_valid_before,
-                          base::Time not_valid_after,
-                          std::string* der_cert) {
-  DCHECK(key);
-  DCHECK(!strncmp(subject.c_str(), "CN=", 3U));
-  CERTCertificate* cert = CreateCertificate(key->public_key(),
-                                            subject,
-                                            serial_number,
-                                            not_valid_before,
-                                            not_valid_after);
-  if (!cert)
-    return false;
-
-  if (!SignCertificate(cert, key->key(), ToSECOid(alg))) {
-    CERT_DestroyCertificate(cert);
-    return false;
-  }
-
-  der_cert->assign(reinterpret_cast<char*>(cert->derCert.data),
-                   cert->derCert.len);
-  CERT_DestroyCertificate(cert);
-  return true;
-}
-
-bool GetTLSServerEndPointChannelBinding(const X509Certificate& certificate,
-                                        std::string* token) {
-  NOTIMPLEMENTED();
+    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);
+}
+
+void GetRFC822SubjectAltNames(CERTCertificate* cert_handle,
+                              std::vector<std::string>* names) {
+  crypto::ScopedSECItem alt_name(SECITEM_AllocItem(NULL, NULL, 0));
+  DCHECK(alt_name.get());
+
+  names->clear();
+  SECStatus rv = CERT_FindCertExtension(
+      cert_handle, SEC_OID_X509_SUBJECT_ALT_NAME, alt_name.get());
+  if (rv != SECSuccess)
+    return;
+
+  crypto::ScopedPLArenaPool arena(PORT_NewArena(DER_DEFAULT_CHUNKSIZE));
+  DCHECK(arena.get());
+
+  CERTGeneralName* alt_name_list;
+  alt_name_list = CERT_DecodeAltNameExtension(arena.get(), alt_name.get());
+
+  CERTGeneralName* name = alt_name_list;
+  while (name) {
+    if (name->type == certRFC822Name) {
+      names->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;
+  }
+}
+
+void GetUPNSubjectAltNames(CERTCertificate* cert_handle,
+                           std::vector<std::string>* names) {
+  crypto::ScopedSECItem alt_name(SECITEM_AllocItem(NULL, NULL, 0));
+  DCHECK(alt_name.get());
+
+  names->clear();
+  SECStatus rv = CERT_FindCertExtension(
+      cert_handle, SEC_OID_X509_SUBJECT_ALT_NAME, alt_name.get());
+  if (rv != SECSuccess)
+    return;
+
+  crypto::ScopedPLArenaPool arena(PORT_NewArena(DER_DEFAULT_CHUNKSIZE));
+  DCHECK(arena.get());
+
+  CERTGeneralName* alt_name_list;
+  alt_name_list = CERT_DecodeAltNameExtension(arena.get(), alt_name.get());
+
+  CERTGeneralName* name = alt_name_list;
+  while (name) {
+    if (name->type == certOtherName) {
+      OtherName* on = &name->name.OthName;
+      if (on->oid.len == sizeof(kUpnOid) &&
+          memcmp(on->oid.data, kUpnOid, sizeof(kUpnOid)) == 0) {
+        SECItem decoded;
+        if (SEC_QuickDERDecodeItem(arena.get(), &decoded,
+                                   SEC_ASN1_GET(SEC_UTF8StringTemplate),
+                                   &name->name.OthName.name) == SECSuccess) {
+          names->push_back(
+              std::string(reinterpret_cast<char*>(decoded.data), decoded.len));
+        }
+      }
+    }
+    name = CERT_GetNextGeneralName(name);
+    if (name == alt_name_list)
+      break;
+  }
+}
+
+X509Certificate::OSCertHandles CreateOSCertHandlesFromBytes(
+    const char* data,
+    size_t length,
+    X509Certificate::Format format) {
+  X509Certificate::OSCertHandles results;
+
+  crypto::EnsureNSSInit();
+
+  if (!NSS_IsInitialized())
+    return results;
+
+  switch (format) {
+    case X509Certificate::FORMAT_SINGLE_CERTIFICATE: {
+      X509Certificate::OSCertHandle handle =
+          X509Certificate::CreateOSCertHandleFromBytes(data, length);
+      if (handle)
+        results.push_back(handle);
+      break;
+    }
+    case X509Certificate::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.data(), base::checked_cast<int>(data_copy.size()),
+          CollectCertsCallback, &results);
+      if (result != SECSuccess)
+        results.clear();
+      break;
+    }
+    default:
+      NOTREACHED() << "Certificate format " << format << " unimplemented";
+      break;
+  }
+
+  return results;
+}
+
+X509Certificate::OSCertHandle ReadOSCertHandleFromPickle(
+    base::PickleIterator* pickle_iter) {
+  const char* data;
+  int length;
+  if (!pickle_iter->ReadData(&data, &length))
+    return NULL;
+
+  return X509Certificate::CreateOSCertHandleFromBytes(data, length);
+}
+
+void GetPublicKeyInfo(CERTCertificate* handle,
+                      size_t* size_bits,
+                      X509Certificate::PublicKeyType* type) {
+  // Since we might fail, set the output parameters to default values first.
+  *type = X509Certificate::kPublicKeyTypeUnknown;
+  *size_bits = 0;
+
+  crypto::ScopedSECKEYPublicKey key(CERT_ExtractPublicKey(handle));
+  if (!key.get())
+    return;
+
+  *size_bits = SECKEY_PublicKeyStrengthInBits(key.get());
+
+  switch (key->keyType) {
+    case rsaKey:
+      *type = X509Certificate::kPublicKeyTypeRSA;
+      break;
+    case dsaKey:
+      *type = X509Certificate::kPublicKeyTypeDSA;
+      break;
+    case dhKey:
+      *type = X509Certificate::kPublicKeyTypeDH;
+      break;
+    case ecKey:
+      *type = X509Certificate::kPublicKeyTypeECDSA;
+      break;
+    default:
+      *type = X509Certificate::kPublicKeyTypeUnknown;
+      *size_bits = 0;
+      break;
+  }
+}
+
+bool GetIssuersFromEncodedList(const std::vector<std::string>& encoded_issuers,
+                               PLArenaPool* arena,
+                               std::vector<CERTName*>* out) {
+  std::vector<CERTName*> result;
+  for (size_t n = 0; n < encoded_issuers.size(); ++n) {
+    CERTName* name = CreateCertNameFromEncoded(arena, encoded_issuers[n]);
+    if (name != NULL)
+      result.push_back(name);
+  }
+
+  if (result.size() == encoded_issuers.size()) {
+    out->swap(result);
+    return true;
+  }
+
+  for (size_t n = 0; n < result.size(); ++n)
+    CERT_DestroyName(result[n]);
   return false;
 }
 
-} // namespace x509_util
-
-} // namespace net
+bool IsCertificateIssuedBy(const std::vector<CERTCertificate*>& cert_chain,
+                           const std::vector<CERTName*>& valid_issuers) {
+  for (size_t n = 0; n < cert_chain.size(); ++n) {
+    CERTName* cert_issuer = &cert_chain[n]->issuer;
+    for (size_t i = 0; i < valid_issuers.size(); ++i) {
+      if (CERT_CompareName(valid_issuers[i], cert_issuer) == SECEqual)
+        return true;
+    }
+  }
+  return false;
+}
+
+std::string GetUniqueNicknameForSlot(const std::string& nickname,
+                                     const SECItem* subject,
+                                     PK11SlotInfo* slot) {
+  int index = 2;
+  std::string new_name = nickname;
+  std::string temp_nickname = new_name;
+  std::string token_name;
+
+  if (!slot)
+    return new_name;
+
+  if (!PK11_IsInternalKeySlot(slot)) {
+    token_name.assign(PK11_GetTokenName(slot));
+    token_name.append(":");
+
+    temp_nickname = token_name + new_name;
+  }
+
+  while (SEC_CertNicknameConflict(temp_nickname.c_str(),
+                                  const_cast<SECItem*>(subject),
+                                  CERT_GetDefaultCertDB())) {
+    base::SStringPrintf(&new_name, "%s #%d", nickname.c_str(), index++);
+    temp_nickname = token_name + new_name;
+  }
+
+  return new_name;
+}
+
+}  // namespace x509_util
+
+}  // namespace net