1 files changed, 154 insertions, 0 deletions
diff --git a/security/manager/ssl/NSSKeyStore.cpp b/security/manager/ssl/NSSKeyStore.cpp
new file mode 100644
index 0000000000..4a516294c0
--- /dev/null
+++ b/security/manager/ssl/NSSKeyStore.cpp
@@ -0,0 +1,154 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "NSSKeyStore.h"
+
+#include "mozilla/AbstractThread.h"
+#include "mozilla/Base64.h"
+#include "mozilla/Logging.h"
+#include "mozilla/SyncRunnable.h"
+#include "nsIThread.h"
+#include "nsNSSComponent.h"
+#include "nsPK11TokenDB.h"
+#include "nsXULAppAPI.h"
+
+/* Implementing OSKeyStore when there is no platform specific one.
+ * This key store instead puts the keys into the NSS DB.
+ */
+
+using namespace mozilla;
+using mozilla::SyncRunnable;
+
+LazyLogModule gNSSKeyStoreLog("nsskeystore");
+
+NSSKeyStore::NSSKeyStore() {
+  MOZ_ASSERT(XRE_IsParentProcess());
+  if (!XRE_IsParentProcess()) {
+    // This shouldn't happen as this is only initialised when creating the
+    // OSKeyStore, which is ParentProcessOnly.
+    return;
+  }
+  Unused << EnsureNSSInitializedChromeOrContent();
+  Unused << InitToken();
+}
+NSSKeyStore::~NSSKeyStore() = default;
+
+nsresult NSSKeyStore::InitToken() {
+  if (!mSlot) {
+    mSlot = UniquePK11SlotInfo(PK11_GetInternalKeySlot());
+    if (!mSlot) {
+      MOZ_LOG(gNSSKeyStoreLog, LogLevel::Debug,
+              ("Error getting internal key slot"));
+      return NS_ERROR_NOT_AVAILABLE;
+    }
+  }
+  return NS_OK;
+}
+
+nsresult NSSKeyStore::StoreSecret(const nsACString& aSecret,
+                                  const nsACString& aLabel) {
+  NS_ENSURE_STATE(mSlot);
+
+  // It is possible for multiple keys to have the same nickname in NSS. To
+  // prevent the problem of not knowing which key to use in the future, simply
+  // delete all keys with this nickname before storing a new one.
+  nsresult rv = DeleteSecret(aLabel);
+  if (NS_FAILED(rv)) {
+    MOZ_LOG(gNSSKeyStoreLog, LogLevel::Debug,
+            ("DeleteSecret before StoreSecret failed"));
+    return rv;
+  }
+
+  uint8_t* p = BitwiseCast<uint8_t*, const char*>(aSecret.BeginReading());
+  UniqueSECItem key(SECITEM_AllocItem(nullptr, nullptr, aSecret.Length()));
+  if (!key) {
+    return NS_ERROR_OUT_OF_MEMORY;
+  }
+  key->type = siBuffer;
+  memcpy(key->data, p, aSecret.Length());
+  key->len = aSecret.Length();
+  UniquePK11SymKey symKey(
+      PK11_ImportSymKey(mSlot.get(), CKM_AES_GCM, PK11_OriginUnwrap,
+                        CKA_DECRYPT | CKA_ENCRYPT, key.get(), nullptr));
+  if (!symKey) {
+    MOZ_LOG(gNSSKeyStoreLog, LogLevel::Debug, ("Error creating NSS SymKey"));
+    return NS_ERROR_FAILURE;
+  }
+  UniquePK11SymKey storedKey(
+      PK11_ConvertSessionSymKeyToTokenSymKey(symKey.get(), nullptr));
+  if (!storedKey) {
+    MOZ_LOG(gNSSKeyStoreLog, LogLevel::Debug,
+            ("Error storing NSS SymKey in DB"));
+    return NS_ERROR_FAILURE;
+  }
+  SECStatus srv =
+      PK11_SetSymKeyNickname(storedKey.get(), PromiseFlatCString(aLabel).get());
+  if (srv != SECSuccess) {
+    MOZ_LOG(gNSSKeyStoreLog, LogLevel::Debug, ("Error naming NSS SymKey"));
+    (void)PK11_DeleteTokenSymKey(storedKey.get());
+    return NS_ERROR_FAILURE;
+  }
+
+  return NS_OK;
+}
+
+nsresult NSSKeyStore::DeleteSecret(const nsACString& aLabel) {
+  NS_ENSURE_STATE(mSlot);
+
+  UniquePK11SymKey symKey(PK11_ListFixedKeysInSlot(
+      mSlot.get(), const_cast<char*>(PromiseFlatCString(aLabel).get()),
+      nullptr));
+  if (!symKey) {
+    // Couldn't find the key or something is wrong. Be nice.
+    return NS_OK;
+  }
+  for (PK11SymKey* tmp = symKey.get(); tmp; tmp = PK11_GetNextSymKey(tmp)) {
+    SECStatus srv = PK11_DeleteTokenSymKey(tmp);
+    if (srv != SECSuccess) {
+      MOZ_LOG(gNSSKeyStoreLog, LogLevel::Debug, ("Error deleting NSS SymKey"));
+      return NS_ERROR_FAILURE;
+    }
+  }
+  return NS_OK;
+}
+
+bool NSSKeyStore::SecretAvailable(const nsACString& aLabel) {
+  if (!mSlot) {
+    return false;
+  }
+
+  UniquePK11SymKey symKey(PK11_ListFixedKeysInSlot(
+      mSlot.get(), const_cast<char*>(PromiseFlatCString(aLabel).get()),
+      nullptr));
+  if (!symKey) {
+    return false;
+  }
+  return true;
+}
+
+nsresult NSSKeyStore::EncryptDecrypt(const nsACString& aLabel,
+                                     const std::vector<uint8_t>& inBytes,
+                                     std::vector<uint8_t>& outBytes,
+                                     bool encrypt) {
+  NS_ENSURE_STATE(mSlot);
+
+  UniquePK11SymKey symKey(PK11_ListFixedKeysInSlot(
+      mSlot.get(), const_cast<char*>(PromiseFlatCString(aLabel).get()),
+      nullptr));
+  if (!symKey) {
+    MOZ_LOG(gNSSKeyStoreLog, LogLevel::Debug,
+            ("Error finding key for given label"));
+    return NS_ERROR_FAILURE;
+  }
+  return DoCipher(symKey, inBytes, outBytes, encrypt);
+}
+
+// Because NSSKeyStore overrides AbstractOSKeyStore's EncryptDecrypt and
+// SecretAvailable functions, this isn't necessary.
+nsresult NSSKeyStore::RetrieveSecret(const nsACString& aLabel,
+                                     /* out */ nsACString& aSecret) {
+  return NS_ERROR_NOT_IMPLEMENTED;
+}