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#if HAVE_OPENSSL
#include "guard.h"
#ifndef OPENSSL_NO_QUIC
#include "data.h"
#include <env-inl.h>
#include <memory_tracker-inl.h>
#include <ngtcp2/ngtcp2.h>
#include <node_sockaddr-inl.h>
#include <string_bytes.h>
#include <v8.h>
#include "defs.h"
#include "util.h"
namespace node {
using v8::Array;
using v8::ArrayBuffer;
using v8::ArrayBufferView;
using v8::BackingStore;
using v8::BigInt;
using v8::Just;
using v8::Local;
using v8::Maybe;
using v8::MaybeLocal;
using v8::Nothing;
using v8::Uint8Array;
using v8::Undefined;
using v8::Value;
namespace quic {
int DebugIndentScope::indent_ = 0;
Path::Path(const SocketAddress& local, const SocketAddress& remote) {
ngtcp2_addr_init(&this->local, local.data(), local.length());
ngtcp2_addr_init(&this->remote, remote.data(), remote.length());
}
std::string Path::ToString() const {
DebugIndentScope indent;
auto prefix = indent.Prefix();
const sockaddr* local_in = reinterpret_cast<const sockaddr*>(local.addr);
auto local_addr = SocketAddress::GetAddress(local_in);
auto local_port = SocketAddress::GetPort(local_in);
const sockaddr* remote_in = reinterpret_cast<const sockaddr*>(remote.addr);
auto remote_addr = SocketAddress::GetAddress(remote_in);
auto remote_port = SocketAddress::GetPort(remote_in);
std::string res("{");
res += prefix + "local: " + local_addr + ":" + std::to_string(local_port);
res += prefix + "remote: " + remote_addr + ":" + std::to_string(remote_port);
res += indent.Close();
return res;
}
PathStorage::PathStorage() {
Reset();
}
void PathStorage::Reset() {
ngtcp2_path_storage_zero(this);
}
void PathStorage::CopyTo(PathStorage* path) const {
ngtcp2_path_copy(&path->path, &this->path);
}
bool PathStorage::operator==(const PathStorage& other) const {
return ngtcp2_path_eq(&path, &other.path) != 0;
}
bool PathStorage::operator!=(const PathStorage& other) const {
return ngtcp2_path_eq(&path, &other.path) == 0;
}
// ============================================================================
Store::Store(std::shared_ptr<BackingStore> store, size_t length, size_t offset)
: store_(std::move(store)), length_(length), offset_(offset) {
CHECK_LE(offset_, store_->ByteLength());
CHECK_LE(length_, store_->ByteLength() - offset_);
}
Store::Store(std::unique_ptr<BackingStore> store, size_t length, size_t offset)
: store_(std::move(store)), length_(length), offset_(offset) {
CHECK_LE(offset_, store_->ByteLength());
CHECK_LE(length_, store_->ByteLength() - offset_);
}
Maybe<Store> Store::From(
Local<ArrayBuffer> buffer,
Local<Value> detach_key) {
if (!buffer->IsDetachable()) {
return Nothing<Store>();
}
bool res;
auto backing = buffer->GetBackingStore();
auto length = buffer->ByteLength();
if (!buffer->Detach(detach_key).To(&res) || !res) {
return Nothing<Store>();
}
return Just(Store(std::move(backing), length, 0));
}
Maybe<Store> Store::From(
Local<ArrayBufferView> view,
Local<Value> detach_key) {
if (!view->Buffer()->IsDetachable()) {
return Nothing<Store>();
}
bool res;
auto backing = view->Buffer()->GetBackingStore();
auto length = view->ByteLength();
auto offset = view->ByteOffset();
if (!view->Buffer()->Detach(detach_key).To(&res) || !res) {
return Nothing<Store>();
}
return Just(Store(std::move(backing), length, offset));
}
Local<Uint8Array> Store::ToUint8Array(Environment* env) const {
return !store_
? Uint8Array::New(ArrayBuffer::New(env->isolate(), 0), 0, 0)
: Uint8Array::New(
ArrayBuffer::New(env->isolate(), store_), offset_, length_);
}
Store::operator bool() const {
return store_ != nullptr;
}
size_t Store::length() const {
return length_;
}
size_t Store::total_length() const {
return store_ ? store_->ByteLength() : 0;
}
template <typename T, OneByteType N>
T Store::convert() const {
// We can only safely convert to T if we have a valid store.
CHECK(store_);
T buf;
buf.base =
store_ != nullptr ? static_cast<N*>(store_->Data()) + offset_ : nullptr;
buf.len = length_;
return buf;
}
Store::operator uv_buf_t() const {
return convert<uv_buf_t, char>();
}
Store::operator ngtcp2_vec() const {
return convert<ngtcp2_vec, uint8_t>();
}
Store::operator nghttp3_vec() const {
return convert<nghttp3_vec, uint8_t>();
}
void Store::MemoryInfo(MemoryTracker* tracker) const {
tracker->TrackField("store", store_);
}
// ============================================================================
namespace {
constexpr std::string_view TypeName(QuicError::Type type) {
switch (type) {
case QuicError::Type::APPLICATION:
return "application";
case QuicError::Type::TRANSPORT:
return "transport";
case QuicError::Type::VERSION_NEGOTIATION:
return "version_negotiation";
case QuicError::Type::IDLE_CLOSE:
return "idle_close";
case QuicError::Type::DROP_CONNECTION:
return "drop_connection";
case QuicError::Type::RETRY:
return "retry";
default:
return "<unknown>";
}
}
} // namespace
QuicError::QuicError(const std::string& reason)
: reason_(reason), error_(), ptr_(&error_) {
ngtcp2_ccerr_default(&error_);
}
// Keep in mind that reason_ in each of the constructors here will copy
// the string from the ngtcp2_ccerr input.
QuicError::QuicError(const ngtcp2_ccerr* ptr)
: reason_(reinterpret_cast<const char*>(ptr->reason), ptr->reasonlen),
error_(),
ptr_(ptr) {}
QuicError::QuicError(const ngtcp2_ccerr& error)
: reason_(reinterpret_cast<const char*>(error.reason), error.reasonlen),
error_(error),
ptr_(&error_) {}
const uint8_t* QuicError::reason_c_str() const {
return reinterpret_cast<const uint8_t*>(reason_.c_str());
}
bool QuicError::operator!=(const QuicError& other) const {
return !(*this == other);
}
bool QuicError::operator==(const QuicError& other) const {
if (this == &other) return true;
return type() == other.type() && code() == other.code() &&
frame_type() == other.frame_type();
}
QuicError::Type QuicError::type() const {
return static_cast<Type>(ptr_->type);
}
error_code QuicError::code() const {
return ptr_->error_code;
}
uint64_t QuicError::frame_type() const {
return ptr_->frame_type;
}
const std::string_view QuicError::reason() const {
return reason_;
}
QuicError::operator const ngtcp2_ccerr&() const {
return *ptr_;
}
QuicError::operator const ngtcp2_ccerr*() const {
return ptr_;
}
std::string QuicError::reason_for_liberr(int liberr) {
return ngtcp2_strerror(liberr);
}
std::string QuicError::reason_for_h3_liberr(int liberr) {
return nghttp3_strerror(liberr);
}
bool QuicError::is_fatal_liberror(int liberr) {
return ngtcp2_err_is_fatal(liberr) != 0;
}
bool QuicError::is_fatal_h3_liberror(int liberr) {
return nghttp3_err_is_fatal(liberr) != 0;
}
error_code QuicError::liberr_to_code(int liberr) {
return ngtcp2_err_infer_quic_transport_error_code(liberr);
}
error_code QuicError::h3_liberr_to_code(int liberr) {
return nghttp3_err_infer_quic_app_error_code(liberr);
}
bool QuicError::is_crypto_error() const {
return code() & NGTCP2_CRYPTO_ERROR;
}
std::optional<int> QuicError::get_crypto_error() const {
if (!is_crypto_error()) return std::nullopt;
return code() & ~NGTCP2_CRYPTO_ERROR;
}
MaybeLocal<Value> QuicError::ToV8Value(Environment* env) const {
if ((type() == Type::TRANSPORT && code() == NGTCP2_NO_ERROR) ||
(type() == Type::APPLICATION && code() == NGHTTP3_H3_NO_ERROR)) {
// Note that we only return undefined for *known* no-error application
// codes. It is possible that other application types use other specific
// no-error codes, but since we don't know which application is being used,
// we'll just return the error code value for those below.
return Undefined(env->isolate());
}
Local<Value> type_str;
if (!node::ToV8Value(env->context(), TypeName(type())).ToLocal(&type_str)) {
return {};
}
Local<Value> argv[] = {
type_str,
BigInt::NewFromUnsigned(env->isolate(), code()),
Undefined(env->isolate()),
};
// Note that per the QUIC specification, the reason, if present, is
// expected to be UTF-8 encoded. The spec uses the term "SHOULD" here,
// which means that is is entirely possible that some QUIC implementation
// could choose a different encoding, in which case the conversion here
// will produce garbage. That's ok though, we're going to use the default
// assumption that the impl is following the guidelines.
if (reason_.length() > 0 &&
!node::ToV8Value(env->context(), reason()).ToLocal(&argv[2])) {
return {};
}
return Array::New(env->isolate(), argv, arraysize(argv)).As<Value>();
}
std::string QuicError::ToString() const {
std::string str = "QuicError(";
str += TypeName(type());
str += ") ";
str += std::to_string(code());
if (!reason_.empty()) str += ": " + reason_;
return str;
}
void QuicError::MemoryInfo(MemoryTracker* tracker) const {
tracker->TrackField("reason", reason_.length());
}
const QuicError QuicError::ForTransport(TransportError code,
std::string reason) {
return ForTransport(static_cast<error_code>(code), std::move(reason));
}
const QuicError QuicError::ForTransport(error_code code, std::string reason) {
QuicError error(std::move(reason));
ngtcp2_ccerr_set_transport_error(
&error.error_, code, error.reason_c_str(), error.reason().length());
return error;
}
const QuicError QuicError::ForApplication(Http3Error code, std::string reason) {
return ForApplication(static_cast<error_code>(code), std::move(reason));
}
const QuicError QuicError::ForApplication(error_code code, std::string reason) {
QuicError error(std::move(reason));
ngtcp2_ccerr_set_application_error(
&error.error_, code, error.reason_c_str(), error.reason().length());
return error;
}
const QuicError QuicError::ForVersionNegotiation(std::string reason) {
return ForNgtcp2Error(NGTCP2_ERR_RECV_VERSION_NEGOTIATION, std::move(reason));
}
const QuicError QuicError::ForIdleClose(std::string reason) {
return ForNgtcp2Error(NGTCP2_ERR_IDLE_CLOSE, std::move(reason));
}
const QuicError QuicError::ForDropConnection(std::string reason) {
return ForNgtcp2Error(NGTCP2_ERR_DROP_CONN, std::move(reason));
}
const QuicError QuicError::ForRetry(std::string reason) {
return ForNgtcp2Error(NGTCP2_ERR_RETRY, std::move(reason));
}
const QuicError QuicError::ForNgtcp2Error(int code, std::string reason) {
QuicError error(std::move(reason));
ngtcp2_ccerr_set_liberr(
&error.error_, code, error.reason_c_str(), error.reason().length());
return error;
}
const QuicError QuicError::ForTlsAlert(int code, std::string reason) {
QuicError error(std::move(reason));
ngtcp2_ccerr_set_tls_alert(
&error.error_, code, error.reason_c_str(), error.reason().length());
return error;
}
const QuicError QuicError::FromConnectionClose(ngtcp2_conn* session) {
return QuicError(ngtcp2_conn_get_ccerr(session));
}
#define V(name) \
const QuicError QuicError::TRANSPORT_##name = \
ForTransport(TransportError::name);
QUIC_TRANSPORT_ERRORS(V)
#undef V
const QuicError QuicError::TRANSPORT_NO_ERROR =
ForTransport(TransportError::NO_ERROR_);
const QuicError QuicError::HTTP3_NO_ERROR = ForApplication(NGHTTP3_H3_NO_ERROR);
const QuicError QuicError::VERSION_NEGOTIATION = ForVersionNegotiation();
const QuicError QuicError::IDLE_CLOSE = ForIdleClose();
const QuicError QuicError::DROP_CONNECTION = ForDropConnection();
const QuicError QuicError::RETRY = ForRetry();
const QuicError QuicError::INTERNAL_ERROR = ForNgtcp2Error(NGTCP2_ERR_INTERNAL);
} // namespace quic
} // namespace node
#endif // OPENSSL_NO_QUIC
#endif // HAVE_OPENSSL