1 files changed, 432 insertions, 0 deletions
diff --git a/storage/mozStorageBindingParams.cpp b/storage/mozStorageBindingParams.cpp
new file mode 100644
index 0000000000..c816faa2b1
--- /dev/null
+++ b/storage/mozStorageBindingParams.cpp
@@ -0,0 +1,432 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * vim: sw=2 ts=2 et lcs=trail\:.,tab\:>~ :
+ * 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 <limits.h>
+
+#include "mozilla/UniquePtrExtensions.h"
+#include "nsString.h"
+
+#include "mozStorageError.h"
+#include "mozStoragePrivateHelpers.h"
+#include "mozStorageBindingParams.h"
+#include "mozStorageBindingParamsArray.h"
+#include "Variant.h"
+
+namespace mozilla::storage {
+
+////////////////////////////////////////////////////////////////////////////////
+//// Local Helper Objects
+
+namespace {
+
+struct BindingColumnData {
+  BindingColumnData(sqlite3_stmt* aStmt, int aColumn)
+      : stmt(aStmt), column(aColumn) {}
+  sqlite3_stmt* stmt;
+  int column;
+};
+
+////////////////////////////////////////////////////////////////////////////////
+//// Variant Specialization Functions (variantToSQLiteT)
+
+int sqlite3_T_int(BindingColumnData aData, int aValue) {
+  return ::sqlite3_bind_int(aData.stmt, aData.column + 1, aValue);
+}
+
+int sqlite3_T_int64(BindingColumnData aData, sqlite3_int64 aValue) {
+  return ::sqlite3_bind_int64(aData.stmt, aData.column + 1, aValue);
+}
+
+int sqlite3_T_double(BindingColumnData aData, double aValue) {
+  return ::sqlite3_bind_double(aData.stmt, aData.column + 1, aValue);
+}
+
+int sqlite3_T_text(BindingColumnData aData, const nsCString& aValue) {
+  return ::sqlite3_bind_text(aData.stmt, aData.column + 1, aValue.get(),
+                             aValue.Length(), SQLITE_TRANSIENT);
+}
+
+int sqlite3_T_text16(BindingColumnData aData, const nsString& aValue) {
+  return ::sqlite3_bind_text16(
+      aData.stmt, aData.column + 1, aValue.get(),
+      aValue.Length() * sizeof(char16_t),  // Length in bytes!
+      SQLITE_TRANSIENT);
+}
+
+int sqlite3_T_null(BindingColumnData aData) {
+  return ::sqlite3_bind_null(aData.stmt, aData.column + 1);
+}
+
+int sqlite3_T_blob(BindingColumnData aData, const void* aBlob, int aSize) {
+  return ::sqlite3_bind_blob(aData.stmt, aData.column + 1, aBlob, aSize, free);
+}
+
+#include "variantToSQLiteT_impl.h"
+
+}  // namespace
+
+////////////////////////////////////////////////////////////////////////////////
+//// BindingParams
+
+BindingParams::BindingParams(mozIStorageBindingParamsArray* aOwningArray,
+                             Statement* aOwningStatement)
+    : mLocked(false),
+      mOwningArray(aOwningArray),
+      mOwningStatement(aOwningStatement),
+      mParamCount(0) {
+  (void)mOwningStatement->GetParameterCount(&mParamCount);
+  mParameters.SetCapacity(mParamCount);
+}
+
+BindingParams::BindingParams(mozIStorageBindingParamsArray* aOwningArray)
+    : mLocked(false),
+      mOwningArray(aOwningArray),
+      mOwningStatement(nullptr),
+      mParamCount(0) {}
+
+AsyncBindingParams::AsyncBindingParams(
+    mozIStorageBindingParamsArray* aOwningArray)
+    : BindingParams(aOwningArray) {}
+
+void BindingParams::lock() {
+  NS_ASSERTION(mLocked == false, "Parameters have already been locked!");
+  mLocked = true;
+
+  // We no longer need to hold a reference to our statement or our owning array.
+  // The array owns us at this point, and it will own a reference to the
+  // statement.
+  mOwningStatement = nullptr;
+  mOwningArray = nullptr;
+}
+
+void BindingParams::unlock(Statement* aOwningStatement) {
+  NS_ASSERTION(mLocked == true, "Parameters were not yet locked!");
+  mLocked = false;
+  mOwningStatement = aOwningStatement;
+}
+
+const mozIStorageBindingParamsArray* BindingParams::getOwner() const {
+  return mOwningArray;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+//// nsISupports
+
+NS_IMPL_ISUPPORTS(BindingParams, mozIStorageBindingParams,
+                  IStorageBindingParamsInternal)
+
+////////////////////////////////////////////////////////////////////////////////
+//// IStorageBindingParamsInternal
+
+already_AddRefed<mozIStorageError> BindingParams::bind(
+    sqlite3_stmt* aStatement) {
+  // Iterate through all of our stored data, and bind it.
+  for (size_t i = 0; i < mParameters.Length(); i++) {
+    int rc = variantToSQLiteT(BindingColumnData(aStatement, i), mParameters[i]);
+    if (rc != SQLITE_OK) {
+      // We had an error while trying to bind.  Now we need to create an error
+      // object with the right message.  Note that we special case
+      // SQLITE_MISMATCH, but otherwise get the message from SQLite.
+      const char* msg = "Could not covert nsIVariant to SQLite type.";
+      if (rc != SQLITE_MISMATCH)
+        msg = ::sqlite3_errmsg(::sqlite3_db_handle(aStatement));
+
+      nsCOMPtr<mozIStorageError> err(new Error(rc, msg));
+      return err.forget();
+    }
+  }
+
+  return nullptr;
+}
+
+already_AddRefed<mozIStorageError> AsyncBindingParams::bind(
+    sqlite3_stmt* aStatement) {
+  // We should bind by index using the super-class if there is nothing in our
+  // hashtable.
+  if (!mNamedParameters.Count()) return BindingParams::bind(aStatement);
+
+  nsCOMPtr<mozIStorageError> err;
+
+  for (auto iter = mNamedParameters.Iter(); !iter.Done(); iter.Next()) {
+    const nsACString& key = iter.Key();
+
+    // We do not accept any forms of names other than ":name", but we need to
+    // add the colon for SQLite.
+    nsAutoCString name(":");
+    name.Append(key);
+    int oneIdx = ::sqlite3_bind_parameter_index(aStatement, name.get());
+
+    if (oneIdx == 0) {
+      nsAutoCString errMsg(key);
+      errMsg.AppendLiteral(" is not a valid named parameter.");
+      err = new Error(SQLITE_RANGE, errMsg.get());
+      break;
+    }
+
+    // XPCVariant's AddRef and Release are not thread-safe and so we must not
+    // do anything that would invoke them here on the async thread.  As such we
+    // can't cram aValue into mParameters using ReplaceObjectAt so that
+    // we can freeload off of the BindingParams::Bind implementation.
+    int rc = variantToSQLiteT(BindingColumnData(aStatement, oneIdx - 1),
+                              iter.UserData());
+    if (rc != SQLITE_OK) {
+      // We had an error while trying to bind.  Now we need to create an error
+      // object with the right message.  Note that we special case
+      // SQLITE_MISMATCH, but otherwise get the message from SQLite.
+      const char* msg = "Could not covert nsIVariant to SQLite type.";
+      if (rc != SQLITE_MISMATCH) {
+        msg = ::sqlite3_errmsg(::sqlite3_db_handle(aStatement));
+      }
+      err = new Error(rc, msg);
+      break;
+    }
+  }
+
+  return err.forget();
+}
+
+///////////////////////////////////////////////////////////////////////////////
+//// mozIStorageBindingParams
+
+NS_IMETHODIMP
+BindingParams::BindByName(const nsACString& aName, nsIVariant* aValue) {
+  NS_ENSURE_FALSE(mLocked, NS_ERROR_UNEXPECTED);
+
+  // Get the column index that we need to store this at.
+  uint32_t index;
+  nsresult rv = mOwningStatement->GetParameterIndex(aName, &index);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  return BindByIndex(index, aValue);
+}
+
+NS_IMETHODIMP
+AsyncBindingParams::BindByName(const nsACString& aName, nsIVariant* aValue) {
+  NS_ENSURE_FALSE(mLocked, NS_ERROR_UNEXPECTED);
+
+  RefPtr<Variant_base> variant = convertVariantToStorageVariant(aValue);
+  if (!variant) return NS_ERROR_UNEXPECTED;
+
+  mNamedParameters.Put(aName, variant);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+BindingParams::BindUTF8StringByName(const nsACString& aName,
+                                    const nsACString& aValue) {
+  nsCOMPtr<nsIVariant> value(new UTF8TextVariant(aValue));
+  NS_ENSURE_TRUE(value, NS_ERROR_OUT_OF_MEMORY);
+
+  return BindByName(aName, value);
+}
+
+NS_IMETHODIMP
+BindingParams::BindStringByName(const nsACString& aName,
+                                const nsAString& aValue) {
+  nsCOMPtr<nsIVariant> value(new TextVariant(aValue));
+  NS_ENSURE_TRUE(value, NS_ERROR_OUT_OF_MEMORY);
+
+  return BindByName(aName, value);
+}
+
+NS_IMETHODIMP
+BindingParams::BindDoubleByName(const nsACString& aName, double aValue) {
+  nsCOMPtr<nsIVariant> value(new FloatVariant(aValue));
+  NS_ENSURE_TRUE(value, NS_ERROR_OUT_OF_MEMORY);
+
+  return BindByName(aName, value);
+}
+
+NS_IMETHODIMP
+BindingParams::BindInt32ByName(const nsACString& aName, int32_t aValue) {
+  nsCOMPtr<nsIVariant> value(new IntegerVariant(aValue));
+  NS_ENSURE_TRUE(value, NS_ERROR_OUT_OF_MEMORY);
+
+  return BindByName(aName, value);
+}
+
+NS_IMETHODIMP
+BindingParams::BindInt64ByName(const nsACString& aName, int64_t aValue) {
+  nsCOMPtr<nsIVariant> value(new IntegerVariant(aValue));
+  NS_ENSURE_TRUE(value, NS_ERROR_OUT_OF_MEMORY);
+
+  return BindByName(aName, value);
+}
+
+NS_IMETHODIMP
+BindingParams::BindNullByName(const nsACString& aName) {
+  nsCOMPtr<nsIVariant> value(new NullVariant());
+  NS_ENSURE_TRUE(value, NS_ERROR_OUT_OF_MEMORY);
+
+  return BindByName(aName, value);
+}
+
+NS_IMETHODIMP
+BindingParams::BindBlobByName(const nsACString& aName, const uint8_t* aValue,
+                              uint32_t aValueSize) {
+  NS_ENSURE_ARG_MAX(aValueSize, INT_MAX);
+  std::pair<const void*, int> data(static_cast<const void*>(aValue),
+                                   int(aValueSize));
+  nsCOMPtr<nsIVariant> value(new BlobVariant(data));
+  NS_ENSURE_TRUE(value, NS_ERROR_OUT_OF_MEMORY);
+
+  return BindByName(aName, value);
+}
+
+NS_IMETHODIMP
+BindingParams::BindBlobArrayByName(const nsACString& aName,
+                                   const nsTArray<uint8_t>& aValue) {
+  return BindBlobByName(aName, aValue.Elements(), aValue.Length());
+}
+
+NS_IMETHODIMP
+BindingParams::BindStringAsBlobByName(const nsACString& aName,
+                                      const nsAString& aValue) {
+  return DoBindStringAsBlobByName(this, aName, aValue);
+}
+
+NS_IMETHODIMP
+BindingParams::BindUTF8StringAsBlobByName(const nsACString& aName,
+                                          const nsACString& aValue) {
+  return DoBindStringAsBlobByName(this, aName, aValue);
+}
+
+NS_IMETHODIMP
+BindingParams::BindAdoptedBlobByName(const nsACString& aName, uint8_t* aValue,
+                                     uint32_t aValueSize) {
+  UniqueFreePtr<uint8_t> uniqueValue(aValue);
+  NS_ENSURE_ARG_MAX(aValueSize, INT_MAX);
+  std::pair<uint8_t*, int> data(uniqueValue.release(), int(aValueSize));
+  nsCOMPtr<nsIVariant> value(new AdoptedBlobVariant(data));
+
+  return BindByName(aName, value);
+}
+
+NS_IMETHODIMP
+BindingParams::BindByIndex(uint32_t aIndex, nsIVariant* aValue) {
+  NS_ENSURE_FALSE(mLocked, NS_ERROR_UNEXPECTED);
+  ENSURE_INDEX_VALUE(aIndex, mParamCount);
+
+  // Store the variant for later use.
+  RefPtr<Variant_base> variant = convertVariantToStorageVariant(aValue);
+  if (!variant) return NS_ERROR_UNEXPECTED;
+  if (mParameters.Length() <= aIndex) {
+    (void)mParameters.SetLength(aIndex);
+    (void)mParameters.AppendElement(variant);
+  } else {
+    mParameters.ReplaceElementAt(aIndex, variant);
+  }
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+AsyncBindingParams::BindByIndex(uint32_t aIndex, nsIVariant* aValue) {
+  NS_ENSURE_FALSE(mLocked, NS_ERROR_UNEXPECTED);
+  // In the asynchronous case we do not know how many parameters there are to
+  // bind to, so we cannot check the validity of aIndex.
+
+  RefPtr<Variant_base> variant = convertVariantToStorageVariant(aValue);
+  if (!variant) return NS_ERROR_UNEXPECTED;
+  if (mParameters.Length() <= aIndex) {
+    mParameters.SetLength(aIndex);
+    mParameters.AppendElement(variant);
+  } else {
+    mParameters.ReplaceElementAt(aIndex, variant);
+  }
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+BindingParams::BindUTF8StringByIndex(uint32_t aIndex,
+                                     const nsACString& aValue) {
+  nsCOMPtr<nsIVariant> value(new UTF8TextVariant(aValue));
+  NS_ENSURE_TRUE(value, NS_ERROR_OUT_OF_MEMORY);
+
+  return BindByIndex(aIndex, value);
+}
+
+NS_IMETHODIMP
+BindingParams::BindStringByIndex(uint32_t aIndex, const nsAString& aValue) {
+  nsCOMPtr<nsIVariant> value(new TextVariant(aValue));
+  NS_ENSURE_TRUE(value, NS_ERROR_OUT_OF_MEMORY);
+
+  return BindByIndex(aIndex, value);
+}
+
+NS_IMETHODIMP
+BindingParams::BindDoubleByIndex(uint32_t aIndex, double aValue) {
+  nsCOMPtr<nsIVariant> value(new FloatVariant(aValue));
+  NS_ENSURE_TRUE(value, NS_ERROR_OUT_OF_MEMORY);
+
+  return BindByIndex(aIndex, value);
+}
+
+NS_IMETHODIMP
+BindingParams::BindInt32ByIndex(uint32_t aIndex, int32_t aValue) {
+  nsCOMPtr<nsIVariant> value(new IntegerVariant(aValue));
+  NS_ENSURE_TRUE(value, NS_ERROR_OUT_OF_MEMORY);
+
+  return BindByIndex(aIndex, value);
+}
+
+NS_IMETHODIMP
+BindingParams::BindInt64ByIndex(uint32_t aIndex, int64_t aValue) {
+  nsCOMPtr<nsIVariant> value(new IntegerVariant(aValue));
+  NS_ENSURE_TRUE(value, NS_ERROR_OUT_OF_MEMORY);
+
+  return BindByIndex(aIndex, value);
+}
+
+NS_IMETHODIMP
+BindingParams::BindNullByIndex(uint32_t aIndex) {
+  nsCOMPtr<nsIVariant> value(new NullVariant());
+  NS_ENSURE_TRUE(value, NS_ERROR_OUT_OF_MEMORY);
+
+  return BindByIndex(aIndex, value);
+}
+
+NS_IMETHODIMP
+BindingParams::BindBlobByIndex(uint32_t aIndex, const uint8_t* aValue,
+                               uint32_t aValueSize) {
+  NS_ENSURE_ARG_MAX(aValueSize, INT_MAX);
+  std::pair<const void*, int> data(static_cast<const void*>(aValue),
+                                   int(aValueSize));
+  nsCOMPtr<nsIVariant> value(new BlobVariant(data));
+  NS_ENSURE_TRUE(value, NS_ERROR_OUT_OF_MEMORY);
+
+  return BindByIndex(aIndex, value);
+}
+
+NS_IMETHODIMP
+BindingParams::BindBlobArrayByIndex(uint32_t aIndex,
+                                    const nsTArray<uint8_t>& aValue) {
+  return BindBlobByIndex(aIndex, aValue.Elements(), aValue.Length());
+}
+
+NS_IMETHODIMP
+BindingParams::BindStringAsBlobByIndex(uint32_t aIndex,
+                                       const nsAString& aValue) {
+  return DoBindStringAsBlobByIndex(this, aIndex, aValue);
+}
+
+NS_IMETHODIMP
+BindingParams::BindUTF8StringAsBlobByIndex(uint32_t aIndex,
+                                           const nsACString& aValue) {
+  return DoBindStringAsBlobByIndex(this, aIndex, aValue);
+}
+
+NS_IMETHODIMP
+BindingParams::BindAdoptedBlobByIndex(uint32_t aIndex, uint8_t* aValue,
+                                      uint32_t aValueSize) {
+  UniqueFreePtr<uint8_t> uniqueValue(aValue);
+  NS_ENSURE_ARG_MAX(aValueSize, INT_MAX);
+  std::pair<uint8_t*, int> data(uniqueValue.release(), int(aValueSize));
+  nsCOMPtr<nsIVariant> value(new AdoptedBlobVariant(data));
+
+  return BindByIndex(aIndex, value);
+}
+
+}  // namespace mozilla::storage