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// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
#ifndef SRC_TLS_WRAP_H_
#define SRC_TLS_WRAP_H_
#include "node.h"
#include "node_crypto.h" // SSLWrap
#include "async-wrap.h"
#include "env.h"
#include "queue.h"
#include "stream_wrap.h"
#include "v8.h"
#include <openssl/ssl.h>
namespace node {
// Forward-declarations
class NodeBIO;
class WriteWrap;
namespace crypto {
class SecureContext;
}
class TLSCallbacks : public crypto::SSLWrap<TLSCallbacks>,
public StreamWrapCallbacks,
public AsyncWrap {
public:
~TLSCallbacks() override;
static void Initialize(v8::Handle<v8::Object> target,
v8::Handle<v8::Value> unused,
v8::Handle<v8::Context> context);
const char* Error() const override;
void ClearError() override;
int TryWrite(uv_buf_t** bufs, size_t* count) override;
int DoWrite(WriteWrap* w,
uv_buf_t* bufs,
size_t count,
uv_stream_t* send_handle,
uv_write_cb cb) override;
void AfterWrite(WriteWrap* w) override;
void DoAlloc(uv_handle_t* handle,
size_t suggested_size,
uv_buf_t* buf) override;
void DoRead(uv_stream_t* handle,
ssize_t nread,
const uv_buf_t* buf,
uv_handle_type pending) override;
int DoShutdown(ShutdownWrap* req_wrap, uv_shutdown_cb cb) override;
void NewSessionDoneCb();
protected:
static const int kClearOutChunkSize = 1024;
// Maximum number of bytes for hello parser
static const int kMaxHelloLength = 16384;
// Usual ServerHello + Certificate size
static const int kInitialClientBufferLength = 4096;
// Maximum number of buffers passed to uv_write()
static const int kSimultaneousBufferCount = 10;
// Write callback queue's item
class WriteItem {
public:
WriteItem(WriteWrap* w, uv_write_cb cb) : w_(w), cb_(cb) {
}
~WriteItem() {
w_ = nullptr;
cb_ = nullptr;
}
WriteWrap* w_;
uv_write_cb cb_;
QUEUE member_;
};
TLSCallbacks(Environment* env,
Kind kind,
v8::Handle<v8::Object> sc,
StreamWrapCallbacks* old);
static void SSLInfoCallback(const SSL* ssl_, int where, int ret);
void InitSSL();
void EncOut();
static void EncOutCb(uv_write_t* req, int status);
bool ClearIn();
void ClearOut();
void MakePending();
bool InvokeQueued(int status);
inline void Cycle() {
// Prevent recursion
if (++cycle_depth_ > 1)
return;
for (; cycle_depth_ > 0; cycle_depth_--) {
ClearIn();
ClearOut();
EncOut();
}
}
// If |msg| is not nullptr, caller is responsible for calling `delete[] *msg`.
v8::Local<v8::Value> GetSSLError(int status, int* err, const char** msg);
static void OnClientHelloParseEnd(void* arg);
static void Wrap(const v8::FunctionCallbackInfo<v8::Value>& args);
static void Receive(const v8::FunctionCallbackInfo<v8::Value>& args);
static void Start(const v8::FunctionCallbackInfo<v8::Value>& args);
static void SetVerifyMode(const v8::FunctionCallbackInfo<v8::Value>& args);
static void EnableSessionCallbacks(
const v8::FunctionCallbackInfo<v8::Value>& args);
static void EnableHelloParser(
const v8::FunctionCallbackInfo<v8::Value>& args);
#ifdef SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
static void GetServername(const v8::FunctionCallbackInfo<v8::Value>& args);
static void SetServername(const v8::FunctionCallbackInfo<v8::Value>& args);
static int SelectSNIContextCallback(SSL* s, int* ad, void* arg);
#endif // SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
crypto::SecureContext* sc_;
v8::Persistent<v8::Object> sc_handle_;
BIO* enc_in_;
BIO* enc_out_;
NodeBIO* clear_in_;
uv_write_t write_req_;
size_t write_size_;
size_t write_queue_size_;
QUEUE write_item_queue_;
QUEUE pending_write_items_;
bool started_;
bool established_;
bool shutdown_;
const char* error_;
int cycle_depth_;
// If true - delivered EOF to the js-land, either after `close_notify`, or
// after the `UV_EOF` on socket.
bool eof_;
#ifdef SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
v8::Persistent<v8::Value> sni_context_;
#endif // SSL_CTRL_SET_TLSEXT_SERVERNAME_CB
};
} // namespace node
#endif // SRC_TLS_WRAP_H_
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