// 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.

// This file is included from 2 files, node_http_parser_traditional.cc

// and node_http_parser_llhttp.cc.

#pragma once

#include "node.h"

#include "node_buffer.h"

#include "util.h"

#include "async_wrap-inl.h"

#include "env-inl.h"

#include "stream_base-inl.h"

#include "v8.h"

#include "http_parser_adaptor.h"

#include <cstdlib> // free()

#include <cstring> // strdup(), strchr()

// This is a binding to http_parser (https://github.com/nodejs/http-parser)

// The goal is to decouple sockets from parsing for more javascript-level

// agility. A Buffer is read from a socket and passed to parser.execute().

// The parser then issues callbacks with slices of the data

// parser.onMessageBegin

// parser.onPath

// parser.onBody

// ...

// No copying is performed when slicing the buffer, only small reference

// allocations.

namespace node {

namespace { // NOLINT(build/namespaces)

using v8::Array;

using v8::Boolean;

using v8::Context;

using v8::EscapableHandleScope;

using v8::Exception;

using v8::Function;

using v8::FunctionCallbackInfo;

using v8::FunctionTemplate;

using v8::HandleScope;

using v8::Int32;

using v8::Integer;

using v8::Local;

using v8::MaybeLocal;

using v8::Object;

using v8::String;

using v8::Uint32;

using v8::Undefined;

using v8::Value;

const uint32_t kOnHeaders = 0;

const uint32_t kOnHeadersComplete = 1;

const uint32_t kOnBody = 2;

const uint32_t kOnMessageComplete = 3;

const uint32_t kOnExecute = 4;

// Any more fields than this will be flushed into JS

const size_t kMaxHeaderFieldsCount = 32;

// helper class for the Parser

struct StringPtr {

StringPtr() {

on_heap_ = false;

Reset();

}

~StringPtr() {

Reset();

}

// If str_ does not point to a heap string yet, this function makes it do

// so. This is called at the end of each http_parser_execute() so as not

// to leak references. See issue #2438 and test-http-parser-bad-ref.js.

void Save() {

if (!on_heap_ && size_ > 0) {

char* s = new char[size_];

memcpy(s, str_, size_);

str_ = s;

on_heap_ = true;

}

}

void Reset() {

if (on_heap_) {

delete[] str_;

on_heap_ = false;

}

str_ = nullptr;

size_ = 0;

}

void Update(const char* str, size_t size) {

if (str_ == nullptr) {

str_ = str;

} else if (on_heap_ || str_ + size_ != str) {

// Non-consecutive input, make a copy on the heap.

// TODO(bnoordhuis) Use slab allocation, O(n) allocs is bad.

char* s = new char[size_ + size];

memcpy(s, str_, size_);

memcpy(s + size_, str, size);

if (on_heap_)

delete[] str_;

else

on_heap_ = true;

str_ = s;

}

size_ += size;

}

Local<String> ToString(Environment* env) const {

if (str_)

return OneByteString(env->isolate(), str_, size_);

else

return String::Empty(env->isolate());

}

const char* str_;

bool on_heap_;

size_t size_;

};

class Parser : public AsyncWrap, public StreamListener {

public:

Parser(Environment* env, Local<Object> wrap)

: AsyncWrap(env, wrap),

current_buffer_len_(0),

current_buffer_data_(nullptr) {

}

void MemoryInfo(MemoryTracker* tracker) const override {

tracker->TrackField("current_buffer", current_buffer_);

}

SET_MEMORY_INFO_NAME(Parser)

SET_SELF_SIZE(Parser)

int on_message_begin() {

num_fields_ = num_values_ = 0;

url_.Reset();

status_message_.Reset();

return 0;

}

int on_url(/sitelet?url=https%3A%2F%2Fgithub.com%2Fnta007%2Fnode%2Fblob%2Fmaster%2Fsrc%2Fconst%2520char*%2520at%2C%2520size_t%2520length) {

int rv = TrackHeader(length);

if (rv != 0) {

return rv;

}

url_.Update(at, length);

return 0;

}

int on_status(const char* at, size_t length) {

int rv = TrackHeader(length);

if (rv != 0) {

return rv;

}

status_message_.Update(at, length);

return 0;

}

int on_header_field(const char* at, size_t length) {

int rv = TrackHeader(length);

if (rv != 0) {

return rv;

}

if (num_fields_ == num_values_) {

// start of new field name

num_fields_++;

if (num_fields_ == kMaxHeaderFieldsCount) {

// ran out of space - flush to javascript land

Flush();

num_fields_ = 1;

num_values_ = 0;

}

fields_[num_fields_ - 1].Reset();

}

CHECK_LT(num_fields_, kMaxHeaderFieldsCount);

CHECK_EQ(num_fields_, num_values_ + 1);

fields_[num_fields_ - 1].Update(at, length);

return 0;

}

int on_header_value(const char* at, size_t length) {

int rv = TrackHeader(length);

if (rv != 0) {

return rv;

}

if (num_values_ != num_fields_) {

// start of new header value

num_values_++;

values_[num_values_ - 1].Reset();

}

CHECK_LT(num_values_, arraysize(values_));

CHECK_EQ(num_values_, num_fields_);

values_[num_values_ - 1].Update(at, length);

return 0;

}

int on_headers_complete() {

#ifdef NODE_EXPERIMENTAL_HTTP

header_nread_ = 0;

#endif /* NODE_EXPERIMENTAL_HTTP */

// Arguments for the on-headers-complete javascript callback. This

// list needs to be kept in sync with the actual argument list for

// `parserOnHeadersComplete` in lib/_http_common.js.

enum on_headers_complete_arg_index {

A_VERSION_MAJOR = 0,

A_VERSION_MINOR,

A_HEADERS,

A_METHOD,

A_URL,

A_STATUS_CODE,

A_STATUS_MESSAGE,

A_UPGRADE,

A_SHOULD_KEEP_ALIVE,

A_MAX

};

Local<Value> argv[A_MAX];

Local<Object> obj = object();

Local<Value> cb = obj->Get(env()->context(),

kOnHeadersComplete).ToLocalChecked();

if (!cb->IsFunction())

return 0;

Local<Value> undefined = Undefined(env()->isolate());

for (size_t i = 0; i < arraysize(argv); i++)

argv[i] = undefined;

if (have_flushed_) {

// Slow case, flush remaining headers.

Flush();

} else {

// Fast case, pass headers and URL to JS land.

argv[A_HEADERS] = CreateHeaders();

if (parser_.type == HTTP_REQUEST)

argv[A_URL] = url_.ToString(env());

}

num_fields_ = 0;

num_values_ = 0;

// METHOD

if (parser_.type == HTTP_REQUEST) {

argv[A_METHOD] =

Uint32::NewFromUnsigned(env()->isolate(), parser_.method);

}

// STATUS

if (parser_.type == HTTP_RESPONSE) {

argv[A_STATUS_CODE] =

Integer::New(env()->isolate(), parser_.status_code);

argv[A_STATUS_MESSAGE] = status_message_.ToString(env());

}

// VERSION

argv[A_VERSION_MAJOR] = Integer::New(env()->isolate(), parser_.http_major);

argv[A_VERSION_MINOR] = Integer::New(env()->isolate(), parser_.http_minor);

bool should_keep_alive;

#ifdef NODE_EXPERIMENTAL_HTTP

should_keep_alive = llhttp_should_keep_alive(&parser_);

#else /* !NODE_EXPERIMENTAL_HTTP */

should_keep_alive = http_should_keep_alive(&parser_);

#endif /* NODE_EXPERIMENTAL_HTTP */

argv[A_SHOULD_KEEP_ALIVE] =

Boolean::New(env()->isolate(), should_keep_alive);

argv[A_UPGRADE] = Boolean::New(env()->isolate(), parser_.upgrade);

AsyncCallbackScope callback_scope(env());

MaybeLocal<Value> head_response =

MakeCallback(cb.As<Function>(), arraysize(argv), argv);

int64_t val;

if (head_response.IsEmpty() || !head_response.ToLocalChecked()

->IntegerValue(env()->context())

.To(&val)) {

got_exception_ = true;

return -1;

}

return val;

}

int on_body(const char* at, size_t length) {

EscapableHandleScope scope(env()->isolate());

Local<Object> obj = object();

Local<Value> cb = obj->Get(env()->context(), kOnBody).ToLocalChecked();

if (!cb->IsFunction())

return 0;

// We came from consumed stream

if (current_buffer_.IsEmpty()) {

// Make sure Buffer will be in parent HandleScope

current_buffer_ = scope.Escape(Buffer::Copy(

env()->isolate(),

current_buffer_data_,

current_buffer_len_).ToLocalChecked());

}

Local<Value> argv[3] = {

current_buffer_,

Integer::NewFromUnsigned(env()->isolate(), at - current_buffer_data_),

Integer::NewFromUnsigned(env()->isolate(), length)

};

MaybeLocal<Value> r = MakeCallback(cb.As<Function>(),

arraysize(argv),

argv);

if (r.IsEmpty()) {

got_exception_ = true;

#ifdef NODE_EXPERIMENTAL_HTTP

llhttp_set_error_reason(&parser_, "HPE_JS_EXCEPTION:JS Exception");

#endif /* NODE_EXPERIMENTAL_HTTP */

return HPE_USER;

}

return 0;

}

int on_message_complete() {

HandleScope scope(env()->isolate());

if (num_fields_)

Flush(); // Flush trailing HTTP headers.

Local<Object> obj = object();

Local<Value> cb = obj->Get(env()->context(),

kOnMessageComplete).ToLocalChecked();

if (!cb->IsFunction())

return 0;

AsyncCallbackScope callback_scope(env());

MaybeLocal<Value> r = MakeCallback(cb.As<Function>(), 0, nullptr);

if (r.IsEmpty()) {

got_exception_ = true;

return -1;

}

return 0;

}

#ifdef NODE_EXPERIMENTAL_HTTP

// Reset nread for the next chunk

int on_chunk_header() {

header_nread_ = 0;

return 0;

}

// Reset nread for the next chunk

int on_chunk_complete() {

header_nread_ = 0;

return 0;

}

#endif /* NODE_EXPERIMENTAL_HTTP */

static void New(const FunctionCallbackInfo<Value>& args) {

Environment* env = Environment::GetCurrent(args);

new Parser(env, args.This());

}

static void Close(const FunctionCallbackInfo<Value>& args) {

Parser* parser;

ASSIGN_OR_RETURN_UNWRAP(&parser, args.Holder());

delete parser;

}

static void Free(const FunctionCallbackInfo<Value>& args) {

Parser* parser;

ASSIGN_OR_RETURN_UNWRAP(&parser, args.Holder());

// Since the Parser destructor isn't going to run the destroy() callbacks

// it needs to be triggered manually.

parser->EmitTraceEventDestroy();

parser->EmitDestroy();

}

void Save() {

url_.Save();

status_message_.Save();

for (size_t i = 0; i < num_fields_; i++) {

fields_[i].Save();

}

for (size_t i = 0; i < num_values_; i++) {

values_[i].Save();

}

}

// var bytesParsed = parser->execute(buffer);

static void Execute(const FunctionCallbackInfo<Value>& args) {

Parser* parser;

ASSIGN_OR_RETURN_UNWRAP(&parser, args.Holder());

CHECK(parser->current_buffer_.IsEmpty());

CHECK_EQ(parser->current_buffer_len_, 0);

CHECK_NULL(parser->current_buffer_data_);

ArrayBufferViewContents<char> buffer(args[0]);

// This is a hack to get the current_buffer to the callbacks with the least

// amount of overhead. Nothing else will run while http_parser_execute()

// runs, therefore this pointer can be set and used for the execution.

parser->current_buffer_ = args[0].As<Object>();

Local<Value> ret = parser->Execute(buffer.data(), buffer.length());

if (!ret.IsEmpty())

args.GetReturnValue().Set(ret);

}

static void Finish(const FunctionCallbackInfo<Value>& args) {

Parser* parser;

ASSIGN_OR_RETURN_UNWRAP(&parser, args.Holder());

CHECK(parser->current_buffer_.IsEmpty());

Local<Value> ret = parser->Execute(nullptr, 0);

if (!ret.IsEmpty())

args.GetReturnValue().Set(ret);

}

static void Initialize(const FunctionCallbackInfo<Value>& args) {

Environment* env = Environment::GetCurrent(args);

CHECK(args[0]->IsInt32());

CHECK(args[1]->IsObject());

parser_type_t type =

static_cast<parser_type_t>(args[0].As<Int32>()->Value());

CHECK(type == HTTP_REQUEST || type == HTTP_RESPONSE);

Parser* parser;

ASSIGN_OR_RETURN_UNWRAP(&parser, args.Holder());

// Should always be called from the same context.

CHECK_EQ(env, parser->env());

AsyncWrap::ProviderType provider =

(type == HTTP_REQUEST ?

AsyncWrap::PROVIDER_HTTPINCOMINGMESSAGE

: AsyncWrap::PROVIDER_HTTPCLIENTREQUEST);

parser->set_provider_type(provider);

parser->AsyncReset(args[1].As<Object>());

parser->Init(type);

}

template <bool should_pause>

static void Pause(const FunctionCallbackInfo<Value>& args) {

Environment* env = Environment::GetCurrent(args);

Parser* parser;

ASSIGN_OR_RETURN_UNWRAP(&parser, args.Holder());

// Should always be called from the same context.

CHECK_EQ(env, parser->env());

#ifdef NODE_EXPERIMENTAL_HTTP

if (parser->execute_depth_) {

parser->pending_pause_ = should_pause;

return;

}

if (should_pause) {

llhttp_pause(&parser->parser_);

} else {

llhttp_resume(&parser->parser_);

}

#else /* !NODE_EXPERIMENTAL_HTTP */

http_parser_pause(&parser->parser_, should_pause);

#endif /* NODE_EXPERIMENTAL_HTTP */

}

static void Consume(const FunctionCallbackInfo<Value>& args) {

Parser* parser;

ASSIGN_OR_RETURN_UNWRAP(&parser, args.Holder());

CHECK(args[0]->IsObject());

StreamBase* stream = StreamBase::FromObject(args[0].As<Object>());

CHECK_NOT_NULL(stream);

stream->PushStreamListener(parser);

}

static void Unconsume(const FunctionCallbackInfo<Value>& args) {

Parser* parser;

ASSIGN_OR_RETURN_UNWRAP(&parser, args.Holder());

// Already unconsumed

if (parser->stream_ == nullptr)

return;

parser->stream_->RemoveStreamListener(parser);

}

static void GetCurrentBuffer(const FunctionCallbackInfo<Value>& args) {

Parser* parser;

ASSIGN_OR_RETURN_UNWRAP(&parser, args.Holder());

Local<Object> ret = Buffer::Copy(

parser->env(),

parser->current_buffer_data_,

parser->current_buffer_len_).ToLocalChecked();

args.GetReturnValue().Set(ret);

}

protected:

static const size_t kAllocBufferSize = 64 * 1024;

uv_buf_t OnStreamAlloc(size_t suggested_size) override {

// For most types of streams, OnStreamRead will be immediately after

// OnStreamAlloc, and will consume all data, so using a static buffer for

// reading is more efficient. For other streams, just use Malloc() directly.

if (env()->http_parser_buffer_in_use())

return uv_buf_init(Malloc(suggested_size), suggested_size);

env()->set_http_parser_buffer_in_use(true);

if (env()->http_parser_buffer() == nullptr)

env()->set_http_parser_buffer(new char[kAllocBufferSize]);

return uv_buf_init(env()->http_parser_buffer(), kAllocBufferSize);

}

void OnStreamRead(ssize_t nread, const uv_buf_t& buf) override {

HandleScope scope(env()->isolate());

// Once we’re done here, either indicate that the HTTP parser buffer

// is free for re-use, or free() the data if it didn’t come from there

// in the first place.

OnScopeLeave on_scope_leave([&]() {

if (buf.base == env()->http_parser_buffer())

env()->set_http_parser_buffer_in_use(false);

else

free(buf.base);

});

if (nread < 0) {

PassReadErrorToPreviousListener(nread);

return;

}

// Ignore, empty reads have special meaning in http parser

if (nread == 0)

return;

current_buffer_.Clear();

Local<Value> ret = Execute(buf.base, nread);

// Exception

if (ret.IsEmpty())

return;

Local<Value> cb =

object()->Get(env()->context(), kOnExecute).ToLocalChecked();

if (!cb->IsFunction())

return;

// Hooks for GetCurrentBuffer

current_buffer_len_ = nread;

current_buffer_data_ = buf.base;

MakeCallback(cb.As<Function>(), 1, &ret);

current_buffer_len_ = 0;

current_buffer_data_ = nullptr;

}

Local<Value> Execute(const char* data, size_t len) {

EscapableHandleScope scope(env()->isolate());

current_buffer_len_ = len;

current_buffer_data_ = data;

got_exception_ = false;

parser_errno_t err;

#ifdef NODE_EXPERIMENTAL_HTTP

// Do not allow re-entering `http_parser_execute()`

CHECK_EQ(execute_depth_, 0);

execute_depth_++;

if (data == nullptr) {

err = llhttp_finish(&parser_);

} else {

err = llhttp_execute(&parser_, data, len);

Save();

}

execute_depth_--;

// Calculate bytes read and resume after Upgrade/CONNECT pause

size_t nread = len;

if (err != HPE_OK) {

nread = llhttp_get_error_pos(&parser_) - data;

// This isn't a real pause, just a way to stop parsing early.

if (err == HPE_PAUSED_UPGRADE) {

err = HPE_OK;

llhttp_resume_after_upgrade(&parser_);

}

}

// Apply pending pause

if (pending_pause_) {

pending_pause_ = false;

llhttp_pause(&parser_);

}

#else /* !NODE_EXPERIMENTAL_HTTP */

size_t nread = http_parser_execute(&parser_, &settings, data, len);

err = HTTP_PARSER_ERRNO(&parser_);

// Finish()

if (data == nullptr) {

// `http_parser_execute()` returns either `0` or `1` when `len` is 0

// (part of the finishing sequence).

CHECK_EQ(len, 0);

switch (nread) {

case 0:

err = HPE_OK;

break;

case 1:

nread = 0;

break;

default:

UNREACHABLE();

}

// Regular Execute()

} else {

Save();

}

#endif /* NODE_EXPERIMENTAL_HTTP */

// Unassign the 'buffer_' variable

current_buffer_.Clear();

current_buffer_len_ = 0;

current_buffer_data_ = nullptr;

// If there was an exception in one of the callbacks

if (got_exception_)

return scope.Escape(Local<Value>());

Local<Integer> nread_obj = Integer::New(env()->isolate(), nread);

// If there was a parse error in one of the callbacks

// TODO(bnoordhuis) What if there is an error on EOF?

if (!parser_.upgrade && err != HPE_OK) {

Local<Value> e = Exception::Error(env()->parse_error_string());

Local<Object> obj = e->ToObject(env()->isolate()->GetCurrentContext())

.ToLocalChecked();

obj->Set(env()->context(),

env()->bytes_parsed_string(),

nread_obj).Check();

#ifdef NODE_EXPERIMENTAL_HTTP

const char* errno_reason = llhttp_get_error_reason(&parser_);

Local<String> code;

Local<String> reason;

if (err == HPE_USER) {

const char* colon = strchr(errno_reason, ':');

CHECK_NOT_NULL(colon);

code = OneByteString(env()->isolate(), errno_reason,

colon - errno_reason);

reason = OneByteString(env()->isolate(), colon + 1);

} else {

code = OneByteString(env()->isolate(), llhttp_errno_name(err));

reason = OneByteString(env()->isolate(), errno_reason);

}

obj->Set(env()->context(), env()->code_string(), code).Check();

obj->Set(env()->context(), env()->reason_string(), reason).Check();

#else /* !NODE_EXPERIMENTAL_HTTP */

obj->Set(env()->context(),

env()->code_string(),

OneByteString(env()->isolate(),

http_errno_name(err))).Check();

#endif /* NODE_EXPERIMENTAL_HTTP */

return scope.Escape(e);

}

// No return value is needed for `Finish()`

if (data == nullptr) {

return scope.Escape(Local<Value>());

}

return scope.Escape(nread_obj);

}

Local<Array> CreateHeaders() {

// There could be extra entries but the max size should be fixed

Local<Value> headers_v[kMaxHeaderFieldsCount * 2];

for (size_t i = 0; i < num_values_; ++i) {

headers_v[i * 2] = fields_[i].ToString(env());

headers_v[i * 2 + 1] = values_[i].ToString(env());

}

return Array::New(env()->isolate(), headers_v, num_values_ * 2);

}

// spill headers and request path to JS land

void Flush() {

HandleScope scope(env()->isolate());

Local<Object> obj = object();

Local<Value> cb = obj->Get(env()->context(), kOnHeaders).ToLocalChecked();

if (!cb->IsFunction())

return;

Local<Value> argv[2] = {

CreateHeaders(),

url_.ToString(env())

};

MaybeLocal<Value> r = MakeCallback(cb.As<Function>(),

arraysize(argv),

argv);

if (r.IsEmpty())

got_exception_ = true;

url_.Reset();

have_flushed_ = true;

}

void Init(parser_type_t type) {

#ifdef NODE_EXPERIMENTAL_HTTP

llhttp_init(&parser_, type, &settings);

header_nread_ = 0;

#else /* !NODE_EXPERIMENTAL_HTTP */

http_parser_init(&parser_, type);

#endif /* NODE_EXPERIMENTAL_HTTP */

url_.Reset();

status_message_.Reset();

num_fields_ = 0;

num_values_ = 0;

have_flushed_ = false;

got_exception_ = false;

}

int TrackHeader(size_t len) {

#ifdef NODE_EXPERIMENTAL_HTTP

header_nread_ += len;

if (header_nread_ >= per_process::cli_options->max_http_header_size) {

llhttp_set_error_reason(&parser_, "HPE_HEADER_OVERFLOW:Header overflow");

return HPE_USER;

}

#endif /* NODE_EXPERIMENTAL_HTTP */

return 0;

}

int MaybePause() {

#ifdef NODE_EXPERIMENTAL_HTTP

CHECK_NE(execute_depth_, 0);

if (!pending_pause_) {

return 0;

}

pending_pause_ = false;

llhttp_set_error_reason(&parser_, "Paused in callback");

return HPE_PAUSED;

#else /* !NODE_EXPERIMENTAL_HTTP */

return 0;

#endif /* NODE_EXPERIMENTAL_HTTP */

}

parser_t parser_;

StringPtr fields_[kMaxHeaderFieldsCount]; // header fields

StringPtr values_[kMaxHeaderFieldsCount]; // header values

StringPtr url_;

StringPtr status_message_;

size_t num_fields_;

size_t num_values_;

bool have_flushed_;

bool got_exception_;

Local<Object> current_buffer_;

size_t current_buffer_len_;

const char* current_buffer_data_;

#ifdef NODE_EXPERIMENTAL_HTTP

unsigned int execute_depth_ = 0;

bool pending_pause_ = false;

uint64_t header_nread_ = 0;

#endif /* NODE_EXPERIMENTAL_HTTP */

// These are helper functions for filling `http_parser_settings`, which turn

// a member function of Parser into a C-style HTTP parser callback.

template <typename Parser, Parser> struct Proxy;

template <typename Parser, typename ...Args, int (Parser::*Member)(Args...)>

struct Proxy<int (Parser::*)(Args...), Member> {

static int Raw(parser_t* p, Args ... args) {

Parser* parser = ContainerOf(&Parser::parser_, p);

int rv = (parser->*Member)(std::forward<Args>(args)...);

if (rv == 0) {

rv = parser->MaybePause();

}

return rv;

}

};

typedef int (Parser::*Call)();

typedef int (Parser::*DataCall)(const char* at, size_t length);

static const parser_settings_t settings;

};

const parser_settings_t Parser::settings = {

Proxy<Call, &Parser::on_message_begin>::Raw,

Proxy<DataCall, &Parser::on_url>::Raw,

Proxy<DataCall, &Parser::on_status>::Raw,

Proxy<DataCall, &Parser::on_header_field>::Raw,

Proxy<DataCall, &Parser::on_header_value>::Raw,

Proxy<Call, &Parser::on_headers_complete>::Raw,

Proxy<DataCall, &Parser::on_body>::Raw,

Proxy<Call, &Parser::on_message_complete>::Raw,

#ifdef NODE_EXPERIMENTAL_HTTP

Proxy<Call, &Parser::on_chunk_header>::Raw,

Proxy<Call, &Parser::on_chunk_complete>::Raw,

#else /* !NODE_EXPERIMENTAL_HTTP */

nullptr,

nullptr,

#endif /* NODE_EXPERIMENTAL_HTTP */

};

#ifndef NODE_EXPERIMENTAL_HTTP

void InitMaxHttpHeaderSizeOnce() {

const uint32_t max_http_header_size =

per_process::cli_options->max_http_header_size;

http_parser_set_max_header_size(max_http_header_size);

}

#endif /* NODE_EXPERIMENTAL_HTTP */

void InitializeHttpParser(Local<Object> target,

Local<Value> unused,

Local<Context> context,

void* priv) {

Environment* env = Environment::GetCurrent(context);

Local<FunctionTemplate> t = env->NewFunctionTemplate(Parser::New);

t->InstanceTemplate()->SetInternalFieldCount(1);

t->SetClassName(FIXED_ONE_BYTE_STRING(env->isolate(), "HTTPParser"));

t->Set(FIXED_ONE_BYTE_STRING(env->isolate(), "REQUEST"),

Integer::New(env->isolate(), HTTP_REQUEST));

t->Set(FIXED_ONE_BYTE_STRING(env->isolate(), "RESPONSE"),

Integer::New(env->isolate(), HTTP_RESPONSE));

t->Set(FIXED_ONE_BYTE_STRING(env->isolate(), "kOnHeaders"),

Integer::NewFromUnsigned(env->isolate(), kOnHeaders));

t->Set(FIXED_ONE_BYTE_STRING(env->isolate(), "kOnHeadersComplete"),

Integer::NewFromUnsigned(env->isolate(), kOnHeadersComplete));

t->Set(FIXED_ONE_BYTE_STRING(env->isolate(), "kOnBody"),

Integer::NewFromUnsigned(env->isolate(), kOnBody));

t->Set(FIXED_ONE_BYTE_STRING(env->isolate(), "kOnMessageComplete"),

Integer::NewFromUnsigned(env->isolate(), kOnMessageComplete));

t->Set(FIXED_ONE_BYTE_STRING(env->isolate(), "kOnExecute"),

Integer::NewFromUnsigned(env->isolate(), kOnExecute));

Local<Array> methods = Array::New(env->isolate());

#define V(num, name, string) \

methods->Set(env->context(), \

num, FIXED_ONE_BYTE_STRING(env->isolate(), #string)).Check();

HTTP_METHOD_MAP(V)

#undef V

target->Set(env->context(),

FIXED_ONE_BYTE_STRING(env->isolate(), "methods"),

methods).Check();

t->Inherit(AsyncWrap::GetConstructorTemplate(env));

env->SetProtoMethod(t, "close", Parser::Close);

env->SetProtoMethod(t, "free", Parser::Free);

env->SetProtoMethod(t, "execute", Parser::Execute);

env->SetProtoMethod(t, "finish", Parser::Finish);

env->SetProtoMethod(t, "initialize", Parser::Initialize);

env->SetProtoMethod(t, "pause", Parser::Pause<true>);

env->SetProtoMethod(t, "resume", Parser::Pause<false>);

env->SetProtoMethod(t, "consume", Parser::Consume);

env->SetProtoMethod(t, "unconsume", Parser::Unconsume);

env->SetProtoMethod(t, "getCurrentBuffer", Parser::GetCurrentBuffer);

target->Set(env->context(),

FIXED_ONE_BYTE_STRING(env->isolate(), "HTTPParser"),

t->GetFunction(env->context()).ToLocalChecked()).Check();

#ifndef NODE_EXPERIMENTAL_HTTP

static uv_once_t init_once = UV_ONCE_INIT;

uv_once(&init_once, InitMaxHttpHeaderSizeOnce);

#endif /* NODE_EXPERIMENTAL_HTTP */

}

} // anonymous namespace

} // namespace node