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node_sqlite.cc
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#include "node_sqlite.h"
#include <path.h>
#include "base_object-inl.h"
#include "debug_utils-inl.h"
#include "env-inl.h"
#include "memory_tracker-inl.h"
#include "node.h"
#include "node_errors.h"
#include "node_mem-inl.h"
#include "sqlite3.h"
#include "util-inl.h"
#include <cinttypes>
namespace node {
namespace sqlite {
using v8::Array;
using v8::ArrayBuffer;
using v8::BigInt;
using v8::Boolean;
using v8::ConstructorBehavior;
using v8::Context;
using v8::DontDelete;
using v8::Exception;
using v8::External;
using v8::Function;
using v8::FunctionCallback;
using v8::FunctionCallbackInfo;
using v8::FunctionTemplate;
using v8::Integer;
using v8::Isolate;
using v8::Local;
using v8::LocalVector;
using v8::MaybeLocal;
using v8::Name;
using v8::NewStringType;
using v8::Null;
using v8::Number;
using v8::Object;
using v8::SideEffectType;
using v8::String;
using v8::Uint8Array;
using v8::Value;
#define CHECK_ERROR_OR_THROW(isolate, db, expr, expected, ret) \
do { \
int r_ = (expr); \
if (r_ != (expected)) { \
THROW_ERR_SQLITE_ERROR((isolate), (db)); \
return (ret); \
} \
} while (0)
#define THROW_AND_RETURN_ON_BAD_STATE(env, condition, msg) \
do { \
if ((condition)) { \
THROW_ERR_INVALID_STATE((env), (msg)); \
return; \
} \
} while (0)
inline MaybeLocal<Object> CreateSQLiteError(Isolate* isolate,
const char* message) {
Local<String> js_msg;
Local<Object> e;
if (!String::NewFromUtf8(isolate, message).ToLocal(&js_msg) ||
!Exception::Error(js_msg)
->ToObject(isolate->GetCurrentContext())
.ToLocal(&e) ||
e->Set(isolate->GetCurrentContext(),
OneByteString(isolate, "code"),
OneByteString(isolate, "ERR_SQLITE_ERROR"))
.IsNothing()) {
return MaybeLocal<Object>();
}
return e;
}
inline MaybeLocal<Object> CreateSQLiteError(Isolate* isolate, sqlite3* db) {
int errcode = sqlite3_extended_errcode(db);
const char* errstr = sqlite3_errstr(errcode);
const char* errmsg = sqlite3_errmsg(db);
Local<String> js_errmsg;
Local<Object> e;
if (!String::NewFromUtf8(isolate, errstr).ToLocal(&js_errmsg) ||
!CreateSQLiteError(isolate, errmsg).ToLocal(&e) ||
e->Set(isolate->GetCurrentContext(),
OneByteString(isolate, "errcode"),
Integer::New(isolate, errcode))
.IsNothing() ||
e->Set(isolate->GetCurrentContext(),
OneByteString(isolate, "errstr"),
js_errmsg)
.IsNothing()) {
return MaybeLocal<Object>();
}
return e;
}
inline void THROW_ERR_SQLITE_ERROR(Isolate* isolate, sqlite3* db) {
Local<Object> e;
if (CreateSQLiteError(isolate, db).ToLocal(&e)) {
isolate->ThrowException(e);
}
}
inline void THROW_ERR_SQLITE_ERROR(Isolate* isolate, const char* message) {
Local<Object> e;
if (CreateSQLiteError(isolate, message).ToLocal(&e)) {
isolate->ThrowException(e);
}
}
DatabaseSync::DatabaseSync(Environment* env,
Local<Object> object,
DatabaseOpenConfiguration&& open_config,
bool open,
bool allow_load_extension)
: BaseObject(env, object), open_config_(std::move(open_config)) {
MakeWeak();
connection_ = nullptr;
allow_load_extension_ = allow_load_extension;
enable_load_extension_ = allow_load_extension;
if (open) {
Open();
}
}
void DatabaseSync::DeleteSessions() {
// all attached sessions need to be deleted before the database is closed
// https://www.sqlite.org/session/sqlite3session_create.html
for (auto* session : sessions_) {
sqlite3session_delete(session);
}
sessions_.clear();
}
DatabaseSync::~DatabaseSync() {
if (IsOpen()) {
FinalizeStatements();
DeleteSessions();
sqlite3_close_v2(connection_);
connection_ = nullptr;
}
}
void DatabaseSync::MemoryInfo(MemoryTracker* tracker) const {
// TODO(tniessen): more accurately track the size of all fields
tracker->TrackFieldWithSize(
"open_config", sizeof(open_config_), "DatabaseOpenConfiguration");
}
bool DatabaseSync::Open() {
if (IsOpen()) {
THROW_ERR_INVALID_STATE(env(), "database is already open");
return false;
}
// TODO(cjihrig): Support additional flags.
int flags = open_config_.get_read_only()
? SQLITE_OPEN_READONLY
: SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE;
int r = sqlite3_open_v2(
open_config_.location().c_str(), &connection_, flags, nullptr);
CHECK_ERROR_OR_THROW(env()->isolate(), connection_, r, SQLITE_OK, false);
r = sqlite3_db_config(connection_,
SQLITE_DBCONFIG_DQS_DML,
static_cast<int>(open_config_.get_enable_dqs()),
nullptr);
CHECK_ERROR_OR_THROW(env()->isolate(), connection_, r, SQLITE_OK, false);
r = sqlite3_db_config(connection_,
SQLITE_DBCONFIG_DQS_DDL,
static_cast<int>(open_config_.get_enable_dqs()),
nullptr);
CHECK_ERROR_OR_THROW(env()->isolate(), connection_, r, SQLITE_OK, false);
int foreign_keys_enabled;
r = sqlite3_db_config(
connection_,
SQLITE_DBCONFIG_ENABLE_FKEY,
static_cast<int>(open_config_.get_enable_foreign_keys()),
&foreign_keys_enabled);
CHECK_ERROR_OR_THROW(env()->isolate(), connection_, r, SQLITE_OK, false);
CHECK_EQ(foreign_keys_enabled, open_config_.get_enable_foreign_keys());
if (allow_load_extension_) {
if (env()->permission()->enabled()) [[unlikely]] {
THROW_ERR_LOAD_SQLITE_EXTENSION(env(),
"Cannot load SQLite extensions when the "
"permission model is enabled.");
return false;
}
const int load_extension_ret = sqlite3_db_config(
connection_, SQLITE_DBCONFIG_ENABLE_LOAD_EXTENSION, 1, nullptr);
CHECK_ERROR_OR_THROW(
env()->isolate(), connection_, load_extension_ret, SQLITE_OK, false);
}
return true;
}
void DatabaseSync::FinalizeStatements() {
for (auto stmt : statements_) {
stmt->Finalize();
}
statements_.clear();
}
void DatabaseSync::UntrackStatement(StatementSync* statement) {
auto it = statements_.find(statement);
if (it != statements_.end()) {
statements_.erase(it);
}
}
inline bool DatabaseSync::IsOpen() {
return connection_ != nullptr;
}
inline sqlite3* DatabaseSync::Connection() {
return connection_;
}
void DatabaseSync::New(const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
if (!args.IsConstructCall()) {
THROW_ERR_CONSTRUCT_CALL_REQUIRED(env);
return;
}
if (!args[0]->IsString()) {
THROW_ERR_INVALID_ARG_TYPE(env->isolate(),
"The \"path\" argument must be a string.");
return;
}
std::string location =
Utf8Value(env->isolate(), args[0].As<String>()).ToString();
DatabaseOpenConfiguration open_config(std::move(location));
bool open = true;
bool allow_load_extension = false;
if (args.Length() > 1) {
if (!args[1]->IsObject()) {
THROW_ERR_INVALID_ARG_TYPE(env->isolate(),
"The \"options\" argument must be an object.");
return;
}
Local<Object> options = args[1].As<Object>();
Local<String> open_string = FIXED_ONE_BYTE_STRING(env->isolate(), "open");
Local<Value> open_v;
if (!options->Get(env->context(), open_string).ToLocal(&open_v)) {
return;
}
if (!open_v->IsUndefined()) {
if (!open_v->IsBoolean()) {
THROW_ERR_INVALID_ARG_TYPE(
env->isolate(), "The \"options.open\" argument must be a boolean.");
return;
}
open = open_v.As<Boolean>()->Value();
}
Local<String> read_only_string =
FIXED_ONE_BYTE_STRING(env->isolate(), "readOnly");
Local<Value> read_only_v;
if (!options->Get(env->context(), read_only_string).ToLocal(&read_only_v)) {
return;
}
if (!read_only_v->IsUndefined()) {
if (!read_only_v->IsBoolean()) {
THROW_ERR_INVALID_ARG_TYPE(
env->isolate(),
"The \"options.readOnly\" argument must be a boolean.");
return;
}
open_config.set_read_only(read_only_v.As<Boolean>()->Value());
}
Local<String> enable_foreign_keys_string =
FIXED_ONE_BYTE_STRING(env->isolate(), "enableForeignKeyConstraints");
Local<Value> enable_foreign_keys_v;
if (!options->Get(env->context(), enable_foreign_keys_string)
.ToLocal(&enable_foreign_keys_v)) {
return;
}
if (!enable_foreign_keys_v->IsUndefined()) {
if (!enable_foreign_keys_v->IsBoolean()) {
THROW_ERR_INVALID_ARG_TYPE(
env->isolate(),
"The \"options.enableForeignKeyConstraints\" argument must be a "
"boolean.");
return;
}
open_config.set_enable_foreign_keys(
enable_foreign_keys_v.As<Boolean>()->Value());
}
Local<String> enable_dqs_string = FIXED_ONE_BYTE_STRING(
env->isolate(), "enableDoubleQuotedStringLiterals");
Local<Value> enable_dqs_v;
if (!options->Get(env->context(), enable_dqs_string)
.ToLocal(&enable_dqs_v)) {
return;
}
if (!enable_dqs_v->IsUndefined()) {
if (!enable_dqs_v->IsBoolean()) {
THROW_ERR_INVALID_ARG_TYPE(
env->isolate(),
"The \"options.enableDoubleQuotedStringLiterals\" argument must be "
"a boolean.");
return;
}
open_config.set_enable_dqs(enable_dqs_v.As<Boolean>()->Value());
}
Local<String> allow_extension_string =
FIXED_ONE_BYTE_STRING(env->isolate(), "allowExtension");
Local<Value> allow_extension_v;
if (!options->Get(env->context(), allow_extension_string)
.ToLocal(&allow_extension_v)) {
return;
}
if (!allow_extension_v->IsUndefined()) {
if (!allow_extension_v->IsBoolean()) {
THROW_ERR_INVALID_ARG_TYPE(
env->isolate(),
"The \"options.allowExtension\" argument must be a boolean.");
return;
}
allow_load_extension = allow_extension_v.As<Boolean>()->Value();
}
}
new DatabaseSync(
env, args.This(), std::move(open_config), open, allow_load_extension);
}
void DatabaseSync::Open(const FunctionCallbackInfo<Value>& args) {
DatabaseSync* db;
ASSIGN_OR_RETURN_UNWRAP(&db, args.This());
db->Open();
}
void DatabaseSync::Close(const FunctionCallbackInfo<Value>& args) {
DatabaseSync* db;
ASSIGN_OR_RETURN_UNWRAP(&db, args.This());
Environment* env = Environment::GetCurrent(args);
THROW_AND_RETURN_ON_BAD_STATE(env, !db->IsOpen(), "database is not open");
db->FinalizeStatements();
db->DeleteSessions();
int r = sqlite3_close_v2(db->connection_);
CHECK_ERROR_OR_THROW(env->isolate(), db->connection_, r, SQLITE_OK, void());
db->connection_ = nullptr;
}
void DatabaseSync::Prepare(const FunctionCallbackInfo<Value>& args) {
DatabaseSync* db;
ASSIGN_OR_RETURN_UNWRAP(&db, args.This());
Environment* env = Environment::GetCurrent(args);
THROW_AND_RETURN_ON_BAD_STATE(env, !db->IsOpen(), "database is not open");
if (!args[0]->IsString()) {
THROW_ERR_INVALID_ARG_TYPE(env->isolate(),
"The \"sql\" argument must be a string.");
return;
}
Utf8Value sql(env->isolate(), args[0].As<String>());
sqlite3_stmt* s = nullptr;
int r = sqlite3_prepare_v2(db->connection_, *sql, -1, &s, 0);
CHECK_ERROR_OR_THROW(env->isolate(), db->connection_, r, SQLITE_OK, void());
BaseObjectPtr<StatementSync> stmt = StatementSync::Create(env, db, s);
db->statements_.insert(stmt.get());
args.GetReturnValue().Set(stmt->object());
}
void DatabaseSync::Exec(const FunctionCallbackInfo<Value>& args) {
DatabaseSync* db;
ASSIGN_OR_RETURN_UNWRAP(&db, args.This());
Environment* env = Environment::GetCurrent(args);
THROW_AND_RETURN_ON_BAD_STATE(env, !db->IsOpen(), "database is not open");
if (!args[0]->IsString()) {
THROW_ERR_INVALID_ARG_TYPE(env->isolate(),
"The \"sql\" argument must be a string.");
return;
}
Utf8Value sql(env->isolate(), args[0].As<String>());
int r = sqlite3_exec(db->connection_, *sql, nullptr, nullptr, nullptr);
CHECK_ERROR_OR_THROW(env->isolate(), db->connection_, r, SQLITE_OK, void());
}
void DatabaseSync::CreateSession(const FunctionCallbackInfo<Value>& args) {
std::string table;
std::string db_name = "main";
Environment* env = Environment::GetCurrent(args);
if (args.Length() > 0) {
if (!args[0]->IsObject()) {
THROW_ERR_INVALID_ARG_TYPE(env->isolate(),
"The \"options\" argument must be an object.");
return;
}
Local<Object> options = args[0].As<Object>();
Local<String> table_key = FIXED_ONE_BYTE_STRING(env->isolate(), "table");
if (options->HasOwnProperty(env->context(), table_key).FromJust()) {
Local<Value> table_value;
if (!options->Get(env->context(), table_key).ToLocal(&table_value)) {
return;
}
if (table_value->IsString()) {
String::Utf8Value str(env->isolate(), table_value);
table = *str;
} else {
THROW_ERR_INVALID_ARG_TYPE(
env->isolate(), "The \"options.table\" argument must be a string.");
return;
}
}
Local<String> db_key =
String::NewFromUtf8(env->isolate(), "db", NewStringType::kNormal)
.ToLocalChecked();
if (options->HasOwnProperty(env->context(), db_key).FromJust()) {
Local<Value> db_value =
options->Get(env->context(), db_key).ToLocalChecked();
if (db_value->IsString()) {
String::Utf8Value str(env->isolate(), db_value);
db_name = std::string(*str);
} else {
THROW_ERR_INVALID_ARG_TYPE(
env->isolate(), "The \"options.db\" argument must be a string.");
return;
}
}
}
DatabaseSync* db;
ASSIGN_OR_RETURN_UNWRAP(&db, args.This());
THROW_AND_RETURN_ON_BAD_STATE(env, !db->IsOpen(), "database is not open");
sqlite3_session* pSession;
int r = sqlite3session_create(db->connection_, db_name.c_str(), &pSession);
CHECK_ERROR_OR_THROW(env->isolate(), db->connection_, r, SQLITE_OK, void());
db->sessions_.insert(pSession);
r = sqlite3session_attach(pSession, table == "" ? nullptr : table.c_str());
CHECK_ERROR_OR_THROW(env->isolate(), db->connection_, r, SQLITE_OK, void());
BaseObjectPtr<Session> session =
Session::Create(env, BaseObjectWeakPtr<DatabaseSync>(db), pSession);
args.GetReturnValue().Set(session->object());
}
// the reason for using static functions here is that SQLite needs a
// function pointer
static std::function<int()> conflictCallback;
static int xConflict(void* pCtx, int eConflict, sqlite3_changeset_iter* pIter) {
if (!conflictCallback) return SQLITE_CHANGESET_ABORT;
return conflictCallback();
}
static std::function<bool(std::string)> filterCallback;
static int xFilter(void* pCtx, const char* zTab) {
if (!filterCallback) return 1;
return filterCallback(zTab) ? 1 : 0;
}
void DatabaseSync::ApplyChangeset(const FunctionCallbackInfo<Value>& args) {
conflictCallback = nullptr;
filterCallback = nullptr;
DatabaseSync* db;
ASSIGN_OR_RETURN_UNWRAP(&db, args.This());
Environment* env = Environment::GetCurrent(args);
THROW_AND_RETURN_ON_BAD_STATE(env, !db->IsOpen(), "database is not open");
if (!args[0]->IsUint8Array()) {
THROW_ERR_INVALID_ARG_TYPE(
env->isolate(), "The \"changeset\" argument must be a Uint8Array.");
return;
}
if (args.Length() > 1 && !args[1]->IsUndefined()) {
if (!args[1]->IsObject()) {
THROW_ERR_INVALID_ARG_TYPE(env->isolate(),
"The \"options\" argument must be an object.");
return;
}
Local<Object> options = args[1].As<Object>();
Local<Value> conflictValue =
options->Get(env->context(), env->onconflict_string()).ToLocalChecked();
if (!conflictValue->IsUndefined()) {
if (!conflictValue->IsNumber()) {
THROW_ERR_INVALID_ARG_TYPE(
env->isolate(),
"The \"options.onConflict\" argument must be a number.");
return;
}
int conflictInt = conflictValue->Int32Value(env->context()).FromJust();
conflictCallback = [conflictInt]() -> int { return conflictInt; };
}
if (options->HasOwnProperty(env->context(), env->filter_string())
.FromJust()) {
Local<Value> filterValue =
options->Get(env->context(), env->filter_string()).ToLocalChecked();
if (!filterValue->IsFunction()) {
THROW_ERR_INVALID_ARG_TYPE(
env->isolate(),
"The \"options.filter\" argument must be a function.");
return;
}
Local<Function> filterFunc = filterValue.As<Function>();
filterCallback = [env, filterFunc](std::string item) -> bool {
Local<Value> argv[] = {String::NewFromUtf8(env->isolate(),
item.c_str(),
NewStringType::kNormal)
.ToLocalChecked()};
Local<Value> result =
filterFunc->Call(env->context(), Null(env->isolate()), 1, argv)
.ToLocalChecked();
return result->BooleanValue(env->isolate());
};
}
}
ArrayBufferViewContents<uint8_t> buf(args[0]);
int r = sqlite3changeset_apply(
db->connection_,
buf.length(),
const_cast<void*>(static_cast<const void*>(buf.data())),
xFilter,
xConflict,
nullptr);
if (r == SQLITE_ABORT) {
args.GetReturnValue().Set(false);
return;
}
CHECK_ERROR_OR_THROW(env->isolate(), db->connection_, r, SQLITE_OK, void());
args.GetReturnValue().Set(true);
}
void DatabaseSync::EnableLoadExtension(
const FunctionCallbackInfo<Value>& args) {
DatabaseSync* db;
ASSIGN_OR_RETURN_UNWRAP(&db, args.This());
Environment* env = Environment::GetCurrent(args);
if (!args[0]->IsBoolean()) {
THROW_ERR_INVALID_ARG_TYPE(env->isolate(),
"The \"allow\" argument must be a boolean.");
return;
}
const int enable = args[0].As<Boolean>()->Value();
auto isolate = env->isolate();
if (db->allow_load_extension_ == false && enable == true) {
THROW_ERR_INVALID_STATE(
isolate,
"Cannot enable extension loading because it was disabled at database "
"creation.");
return;
}
db->enable_load_extension_ = enable;
const int load_extension_ret = sqlite3_db_config(
db->connection_, SQLITE_DBCONFIG_ENABLE_LOAD_EXTENSION, enable, nullptr);
CHECK_ERROR_OR_THROW(
isolate, db->connection_, load_extension_ret, SQLITE_OK, void());
}
void DatabaseSync::LoadExtension(const FunctionCallbackInfo<Value>& args) {
DatabaseSync* db;
ASSIGN_OR_RETURN_UNWRAP(&db, args.This());
Environment* env = Environment::GetCurrent(args);
THROW_AND_RETURN_ON_BAD_STATE(
env, db->connection_ == nullptr, "database is not open");
THROW_AND_RETURN_ON_BAD_STATE(
env, !db->allow_load_extension_, "extension loading is not allowed");
THROW_AND_RETURN_ON_BAD_STATE(
env, !db->enable_load_extension_, "extension loading is not allowed");
if (!args[0]->IsString()) {
THROW_ERR_INVALID_ARG_TYPE(env->isolate(),
"The \"path\" argument must be a string.");
return;
}
auto isolate = env->isolate();
BufferValue path(isolate, args[0]);
BufferValue entryPoint(isolate, args[1]);
CHECK_NOT_NULL(*path);
ToNamespacedPath(env, &path);
if (*entryPoint == nullptr) {
ToNamespacedPath(env, &entryPoint);
}
THROW_IF_INSUFFICIENT_PERMISSIONS(
env, permission::PermissionScope::kFileSystemRead, path.ToStringView());
char* errmsg = nullptr;
const int r =
sqlite3_load_extension(db->connection_, *path, *entryPoint, &errmsg);
if (r != SQLITE_OK) {
isolate->ThrowException(ERR_LOAD_SQLITE_EXTENSION(isolate, errmsg));
}
}
StatementSync::StatementSync(Environment* env,
Local<Object> object,
DatabaseSync* db,
sqlite3_stmt* stmt)
: BaseObject(env, object) {
MakeWeak();
db_ = db;
statement_ = stmt;
// In the future, some of these options could be set at the database
// connection level and inherited by statements to reduce boilerplate.
use_big_ints_ = false;
allow_bare_named_params_ = true;
bare_named_params_ = std::nullopt;
}
StatementSync::~StatementSync() {
if (!IsFinalized()) {
db_->UntrackStatement(this);
Finalize();
}
}
void StatementSync::Finalize() {
sqlite3_finalize(statement_);
statement_ = nullptr;
}
inline bool StatementSync::IsFinalized() {
return statement_ == nullptr;
}
bool StatementSync::BindParams(const FunctionCallbackInfo<Value>& args) {
int r = sqlite3_clear_bindings(statement_);
CHECK_ERROR_OR_THROW(
env()->isolate(), db_->Connection(), r, SQLITE_OK, false);
int anon_idx = 1;
int anon_start = 0;
if (args[0]->IsObject() && !args[0]->IsUint8Array()) {
Local<Object> obj = args[0].As<Object>();
Local<Context> context = obj->GetIsolate()->GetCurrentContext();
Local<Array> keys;
if (!obj->GetOwnPropertyNames(context).ToLocal(&keys)) {
return false;
}
if (allow_bare_named_params_ && !bare_named_params_.has_value()) {
bare_named_params_.emplace();
int param_count = sqlite3_bind_parameter_count(statement_);
// Parameter indexing starts at one.
for (int i = 1; i <= param_count; ++i) {
const char* name = sqlite3_bind_parameter_name(statement_, i);
if (name == nullptr) {
continue;
}
auto bare_name = std::string(name + 1);
auto full_name = std::string(name);
auto insertion = bare_named_params_->insert({bare_name, full_name});
if (insertion.second == false) {
auto existing_full_name = (*insertion.first).second;
if (full_name != existing_full_name) {
THROW_ERR_INVALID_STATE(
env(),
"Cannot create bare named parameter '%s' because of "
"conflicting names '%s' and '%s'.",
bare_name,
existing_full_name,
full_name);
return false;
}
}
}
}
uint32_t len = keys->Length();
for (uint32_t j = 0; j < len; j++) {
Local<Value> key;
if (!keys->Get(context, j).ToLocal(&key)) {
return false;
}
Utf8Value utf8_key(env()->isolate(), key);
int r = sqlite3_bind_parameter_index(statement_, *utf8_key);
if (r == 0) {
if (allow_bare_named_params_) {
auto lookup = bare_named_params_->find(std::string(*utf8_key));
if (lookup != bare_named_params_->end()) {
r = sqlite3_bind_parameter_index(statement_,
lookup->second.c_str());
}
}
if (r == 0) {
THROW_ERR_INVALID_STATE(
env(), "Unknown named parameter '%s'", *utf8_key);
return false;
}
}
Local<Value> value;
if (!obj->Get(context, key).ToLocal(&value)) {
return false;
}
if (!BindValue(value, r)) {
return false;
}
}
anon_start++;
}
for (int i = anon_start; i < args.Length(); ++i) {
while (sqlite3_bind_parameter_name(statement_, anon_idx) != nullptr) {
anon_idx++;
}
if (!BindValue(args[i], anon_idx)) {
return false;
}
anon_idx++;
}
return true;
}
bool StatementSync::BindValue(const Local<Value>& value, const int index) {
// SQLite only supports a subset of JavaScript types. Some JS types such as
// functions don't make sense to support. Other JS types such as booleans and
// Dates could be supported by converting them to numbers. However, there
// would not be a good way to read the values back from SQLite with the
// original type.
int r;
if (value->IsNumber()) {
double val = value.As<Number>()->Value();
r = sqlite3_bind_double(statement_, index, val);
} else if (value->IsString()) {
Utf8Value val(env()->isolate(), value.As<String>());
r = sqlite3_bind_text(
statement_, index, *val, val.length(), SQLITE_TRANSIENT);
} else if (value->IsNull()) {
r = sqlite3_bind_null(statement_, index);
} else if (value->IsUint8Array()) {
ArrayBufferViewContents<uint8_t> buf(value);
r = sqlite3_bind_blob(
statement_, index, buf.data(), buf.length(), SQLITE_TRANSIENT);
} else if (value->IsBigInt()) {
bool lossless;
int64_t as_int = value.As<BigInt>()->Int64Value(&lossless);
if (!lossless) {
THROW_ERR_INVALID_ARG_VALUE(env(), "BigInt value is too large to bind.");
return false;
}
r = sqlite3_bind_int64(statement_, index, as_int);
} else {
THROW_ERR_INVALID_ARG_TYPE(
env()->isolate(),
"Provided value cannot be bound to SQLite parameter %d.",
index);
return false;
}
CHECK_ERROR_OR_THROW(
env()->isolate(), db_->Connection(), r, SQLITE_OK, false);
return true;
}
MaybeLocal<Value> StatementSync::ColumnToValue(const int column) {
switch (sqlite3_column_type(statement_, column)) {
case SQLITE_INTEGER: {
sqlite3_int64 value = sqlite3_column_int64(statement_, column);
if (use_big_ints_) {
return BigInt::New(env()->isolate(), value);
} else if (std::abs(value) <= kMaxSafeJsInteger) {
return Number::New(env()->isolate(), value);
} else {
THROW_ERR_OUT_OF_RANGE(env()->isolate(),
"The value of column %d is too large to be "
"represented as a JavaScript number: %" PRId64,
column,
value);
return MaybeLocal<Value>();
}
}
case SQLITE_FLOAT:
return Number::New(env()->isolate(),
sqlite3_column_double(statement_, column));
case SQLITE_TEXT: {
const char* value = reinterpret_cast<const char*>(
sqlite3_column_text(statement_, column));
return String::NewFromUtf8(env()->isolate(), value).As<Value>();
}
case SQLITE_NULL:
return Null(env()->isolate());
case SQLITE_BLOB: {
size_t size =
static_cast<size_t>(sqlite3_column_bytes(statement_, column));
auto data = reinterpret_cast<const uint8_t*>(
sqlite3_column_blob(statement_, column));
auto store = ArrayBuffer::NewBackingStore(env()->isolate(), size);
memcpy(store->Data(), data, size);
auto ab = ArrayBuffer::New(env()->isolate(), std::move(store));
return Uint8Array::New(ab, 0, size);
}
default:
UNREACHABLE("Bad SQLite column type");
}
}
MaybeLocal<Name> StatementSync::ColumnNameToName(const int column) {
const char* col_name = sqlite3_column_name(statement_, column);
if (col_name == nullptr) {
THROW_ERR_INVALID_STATE(env(), "Cannot get name of column %d", column);
return MaybeLocal<Name>();
}
return String::NewFromUtf8(env()->isolate(), col_name).As<Name>();
}
void StatementSync::MemoryInfo(MemoryTracker* tracker) const {}
void StatementSync::All(const FunctionCallbackInfo<Value>& args) {
StatementSync* stmt;
ASSIGN_OR_RETURN_UNWRAP(&stmt, args.This());
Environment* env = Environment::GetCurrent(args);
THROW_AND_RETURN_ON_BAD_STATE(
env, stmt->IsFinalized(), "statement has been finalized");
Isolate* isolate = env->isolate();
int r = sqlite3_reset(stmt->statement_);
CHECK_ERROR_OR_THROW(isolate, stmt->db_->Connection(), r, SQLITE_OK, void());
if (!stmt->BindParams(args)) {
return;
}
auto reset = OnScopeLeave([&]() { sqlite3_reset(stmt->statement_); });
int num_cols = sqlite3_column_count(stmt->statement_);
LocalVector<Value> rows(isolate);
while ((r = sqlite3_step(stmt->statement_)) == SQLITE_ROW) {
LocalVector<Name> row_keys(isolate);
row_keys.reserve(num_cols);
LocalVector<Value> row_values(isolate);
row_values.reserve(num_cols);
for (int i = 0; i < num_cols; ++i) {
Local<Name> key;
if (!stmt->ColumnNameToName(i).ToLocal(&key)) return;
Local<Value> val;
if (!stmt->ColumnToValue(i).ToLocal(&val)) return;
row_keys.emplace_back(key);
row_values.emplace_back(val);
}
Local<Object> row = Object::New(
isolate, Null(isolate), row_keys.data(), row_values.data(), num_cols);
rows.emplace_back(row);
}
CHECK_ERROR_OR_THROW(
isolate, stmt->db_->Connection(), r, SQLITE_DONE, void());
args.GetReturnValue().Set(Array::New(isolate, rows.data(), rows.size()));
}
void StatementSync::IterateReturnCallback(
const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
auto isolate = env->isolate();
auto context = isolate->GetCurrentContext();
auto self = args.This();
// iterator has fetch all result or break, prevent next func to return result
self->Set(context, env->isfinished_string(), Boolean::New(isolate, true))
.ToChecked();
auto external_stmt = Local<External>::Cast(
self->Get(context, env->statement_string()).ToLocalChecked());
auto stmt = static_cast<StatementSync*>(external_stmt->Value());
if (!stmt->IsFinalized()) {
sqlite3_reset(stmt->statement_);
}
LocalVector<Name> keys(isolate, {env->done_string(), env->value_string()});
LocalVector<Value> values(isolate,
{Boolean::New(isolate, true), Null(isolate)});
DCHECK_EQ(keys.size(), values.size());
Local<Object> result = Object::New(
isolate, Null(isolate), keys.data(), values.data(), keys.size());
args.GetReturnValue().Set(result);
}
void StatementSync::IterateNextCallback(
const FunctionCallbackInfo<Value>& args) {
Environment* env = Environment::GetCurrent(args);
auto isolate = env->isolate();
auto context = isolate->GetCurrentContext();
auto self = args.This();
// skip iteration if is_finished
auto is_finished = Local<Boolean>::Cast(
self->Get(context, env->isfinished_string()).ToLocalChecked());
if (is_finished->Value()) {
LocalVector<Name> keys(isolate, {env->done_string(), env->value_string()});
LocalVector<Value> values(isolate,
{Boolean::New(isolate, true), Null(isolate)});
DCHECK_EQ(keys.size(), values.size());
Local<Object> result = Object::New(
isolate, Null(isolate), keys.data(), values.data(), keys.size());
args.GetReturnValue().Set(result);
return;
}
auto external_stmt = Local<External>::Cast(
self->Get(context, env->statement_string()).ToLocalChecked());
auto stmt = static_cast<StatementSync*>(external_stmt->Value());
auto num_cols =
Local<Integer>::Cast(
self->Get(context, env->num_cols_string()).ToLocalChecked())
->Value();
THROW_AND_RETURN_ON_BAD_STATE(
env, stmt->IsFinalized(), "statement has been finalized");
int r = sqlite3_step(stmt->statement_);
if (r != SQLITE_ROW) {
CHECK_ERROR_OR_THROW(
env->isolate(), stmt->db_->Connection(), r, SQLITE_DONE, void());
// cleanup when no more rows to fetch
sqlite3_reset(stmt->statement_);
self->Set(context, env->isfinished_string(), Boolean::New(isolate, true))
.ToChecked();
LocalVector<Name> keys(isolate, {env->done_string(), env->value_string()});
LocalVector<Value> values(isolate,
{Boolean::New(isolate, true), Null(isolate)});
DCHECK_EQ(keys.size(), values.size());
Local<Object> result = Object::New(
isolate, Null(isolate), keys.data(), values.data(), keys.size());
args.GetReturnValue().Set(result);
return;
}
LocalVector<Name> row_keys(isolate);
row_keys.reserve(num_cols);
LocalVector<Value> row_values(isolate);
row_values.reserve(num_cols);
for (int i = 0; i < num_cols; ++i) {
Local<Name> key;
if (!stmt->ColumnNameToName(i).ToLocal(&key)) return;
Local<Value> val;
if (!stmt->ColumnToValue(i).ToLocal(&val)) return;
row_keys.emplace_back(key);
row_values.emplace_back(val);
}
Local<Object> row = Object::New(
isolate, Null(isolate), row_keys.data(), row_values.data(), num_cols);
LocalVector<Name> keys(isolate, {env->done_string(), env->value_string()});
LocalVector<Value> values(isolate, {Boolean::New(isolate, false), row});
DCHECK_EQ(keys.size(), values.size());
Local<Object> result = Object::New(
isolate, Null(isolate), keys.data(), values.data(), keys.size());
args.GetReturnValue().Set(result);