/
electron_api_url_loader.cc
616 lines (553 loc) · 23 KB
/
electron_api_url_loader.cc
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// Copyright (c) 2019 Slack Technologies, Inc.
// Use of this source code is governed by the MIT license that can be
// found in the LICENSE file.
#include "shell/browser/api/electron_api_url_loader.h"
#include <algorithm>
#include <memory>
#include <string>
#include <utility>
#include <vector>
#include "base/no_destructor.h"
#include "gin/handle.h"
#include "gin/object_template_builder.h"
#include "gin/wrappable.h"
#include "mojo/public/cpp/bindings/remote.h"
#include "mojo/public/cpp/system/data_pipe_producer.h"
#include "net/base/load_flags.h"
#include "services/network/public/cpp/resource_request.h"
#include "services/network/public/cpp/simple_url_loader.h"
#include "services/network/public/mojom/chunked_data_pipe_getter.mojom.h"
#include "services/network/public/mojom/http_raw_headers.mojom.h"
#include "services/network/public/mojom/url_loader_factory.mojom.h"
#include "shell/browser/api/electron_api_session.h"
#include "shell/browser/electron_browser_context.h"
#include "shell/browser/javascript_environment.h"
#include "shell/common/gin_converters/callback_converter.h"
#include "shell/common/gin_converters/gurl_converter.h"
#include "shell/common/gin_converters/net_converter.h"
#include "shell/common/gin_helper/dictionary.h"
#include "shell/common/gin_helper/object_template_builder.h"
#include "shell/common/node_includes.h"
namespace gin {
template <>
struct Converter<network::mojom::HttpRawHeaderPairPtr> {
static v8::Local<v8::Value> ToV8(
v8::Isolate* isolate,
const network::mojom::HttpRawHeaderPairPtr& pair) {
gin_helper::Dictionary dict = gin::Dictionary::CreateEmpty(isolate);
dict.Set("key", pair->key);
dict.Set("value", pair->value);
return dict.GetHandle();
}
};
template <>
struct Converter<network::mojom::CredentialsMode> {
static bool FromV8(v8::Isolate* isolate,
v8::Local<v8::Value> val,
network::mojom::CredentialsMode* out) {
std::string mode;
if (!ConvertFromV8(isolate, val, &mode))
return false;
if (mode == "omit")
*out = network::mojom::CredentialsMode::kOmit;
else if (mode == "include")
*out = network::mojom::CredentialsMode::kInclude;
else
// "same-origin" is technically a member of this enum as well, but it
// doesn't make sense in the context of `net.request()`, so don't convert
// it.
return false;
return true;
}
}; // namespace gin
} // namespace gin
namespace electron {
namespace api {
namespace {
class BufferDataSource : public mojo::DataPipeProducer::DataSource {
public:
explicit BufferDataSource(base::span<char> buffer) {
buffer_.resize(buffer.size());
memcpy(buffer_.data(), buffer.data(), buffer_.size());
}
~BufferDataSource() override = default;
private:
// mojo::DataPipeProducer::DataSource:
uint64_t GetLength() const override { return buffer_.size(); }
ReadResult Read(uint64_t offset, base::span<char> buffer) override {
ReadResult result;
if (offset <= buffer_.size()) {
size_t readable_size = buffer_.size() - offset;
size_t writable_size = buffer.size();
size_t copyable_size = std::min(readable_size, writable_size);
if (copyable_size > 0) {
memcpy(buffer.data(), &buffer_[offset], copyable_size);
}
result.bytes_read = copyable_size;
} else {
NOTREACHED();
result.result = MOJO_RESULT_OUT_OF_RANGE;
}
return result;
}
std::vector<char> buffer_;
};
class JSChunkedDataPipeGetter : public gin::Wrappable<JSChunkedDataPipeGetter>,
public network::mojom::ChunkedDataPipeGetter {
public:
static gin::Handle<JSChunkedDataPipeGetter> Create(
v8::Isolate* isolate,
v8::Local<v8::Function> body_func,
mojo::PendingReceiver<network::mojom::ChunkedDataPipeGetter>
chunked_data_pipe_getter) {
return gin::CreateHandle(
isolate, new JSChunkedDataPipeGetter(
isolate, body_func, std::move(chunked_data_pipe_getter)));
}
// gin::Wrappable
gin::ObjectTemplateBuilder GetObjectTemplateBuilder(
v8::Isolate* isolate) override {
return gin::Wrappable<JSChunkedDataPipeGetter>::GetObjectTemplateBuilder(
isolate)
.SetMethod("write", &JSChunkedDataPipeGetter::WriteChunk)
.SetMethod("done", &JSChunkedDataPipeGetter::Done);
}
static gin::WrapperInfo kWrapperInfo;
~JSChunkedDataPipeGetter() override = default;
private:
JSChunkedDataPipeGetter(
v8::Isolate* isolate,
v8::Local<v8::Function> body_func,
mojo::PendingReceiver<network::mojom::ChunkedDataPipeGetter>
chunked_data_pipe_getter)
: isolate_(isolate), body_func_(isolate, body_func) {
receiver_.Bind(std::move(chunked_data_pipe_getter));
}
// network::mojom::ChunkedDataPipeGetter:
void GetSize(GetSizeCallback callback) override {
size_callback_ = std::move(callback);
}
void StartReading(mojo::ScopedDataPipeProducerHandle pipe) override {
DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
if (body_func_.IsEmpty()) {
LOG(ERROR) << "Tried to read twice from a JSChunkedDataPipeGetter";
// Drop the handle on the floor.
return;
}
data_producer_ = std::make_unique<mojo::DataPipeProducer>(std::move(pipe));
v8::HandleScope handle_scope(isolate_);
auto maybe_wrapper = GetWrapper(isolate_);
v8::Local<v8::Value> wrapper;
if (!maybe_wrapper.ToLocal(&wrapper)) {
return;
}
v8::Local<v8::Value> argv[] = {wrapper};
node::Environment* env = node::Environment::GetCurrent(isolate_);
auto global = env->context()->Global();
node::MakeCallback(isolate_, global, body_func_.Get(isolate_),
node::arraysize(argv), argv, {0, 0});
}
v8::Local<v8::Promise> WriteChunk(v8::Local<v8::Value> buffer_val) {
gin_helper::Promise<void> promise(isolate_);
v8::Local<v8::Promise> handle = promise.GetHandle();
if (!buffer_val->IsArrayBufferView()) {
promise.RejectWithErrorMessage("Expected an ArrayBufferView");
return handle;
}
if (is_writing_) {
promise.RejectWithErrorMessage("Only one write can be pending at a time");
return handle;
}
if (!size_callback_) {
promise.RejectWithErrorMessage("Can't write after calling done()");
return handle;
}
auto buffer = buffer_val.As<v8::ArrayBufferView>();
is_writing_ = true;
bytes_written_ += buffer->ByteLength();
auto backing_store = buffer->Buffer()->GetBackingStore();
auto buffer_span = base::make_span(
static_cast<char*>(backing_store->Data()) + buffer->ByteOffset(),
buffer->ByteLength());
auto buffer_source = std::make_unique<BufferDataSource>(buffer_span);
data_producer_->Write(
std::move(buffer_source),
base::BindOnce(&JSChunkedDataPipeGetter::OnWriteChunkComplete,
// We're OK to use Unretained here because we own
// |data_producer_|.
base::Unretained(this), std::move(promise)));
return handle;
}
void OnWriteChunkComplete(gin_helper::Promise<void> promise,
MojoResult result) {
DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
is_writing_ = false;
if (result == MOJO_RESULT_OK) {
promise.Resolve();
} else {
promise.RejectWithErrorMessage("mojo result not ok: " +
std::to_string(result));
Finished();
}
}
// TODO(nornagon): accept a net error here to allow the data provider to
// cancel the request with an error.
void Done() {
if (size_callback_) {
std::move(size_callback_).Run(net::OK, bytes_written_);
Finished();
}
}
void Finished() {
body_func_.Reset();
data_producer_.reset();
receiver_.reset();
size_callback_.Reset();
}
GetSizeCallback size_callback_;
mojo::Receiver<network::mojom::ChunkedDataPipeGetter> receiver_{this};
std::unique_ptr<mojo::DataPipeProducer> data_producer_;
bool is_writing_ = false;
uint64_t bytes_written_ = 0;
v8::Isolate* isolate_;
v8::Global<v8::Function> body_func_;
};
gin::WrapperInfo JSChunkedDataPipeGetter::kWrapperInfo = {
gin::kEmbedderNativeGin};
const net::NetworkTrafficAnnotationTag kTrafficAnnotation =
net::DefineNetworkTrafficAnnotation("electron_net_module", R"(
semantics {
sender: "Electron Net module"
description:
"Issue HTTP/HTTPS requests using Chromium's native networking "
"library."
trigger: "Using the Net module"
data: "Anything the user wants to send."
destination: OTHER
}
policy {
cookies_allowed: YES
cookies_store: "user"
setting: "This feature cannot be disabled."
})");
} // namespace
gin::WrapperInfo SimpleURLLoaderWrapper::kWrapperInfo = {
gin::kEmbedderNativeGin};
SimpleURLLoaderWrapper::SimpleURLLoaderWrapper(
std::unique_ptr<network::ResourceRequest> request,
network::mojom::URLLoaderFactory* url_loader_factory,
int options) {
if (!request->trusted_params)
request->trusted_params = network::ResourceRequest::TrustedParams();
mojo::PendingRemote<network::mojom::URLLoaderNetworkServiceObserver>
url_loader_network_observer_remote;
url_loader_network_observer_receivers_.Add(
this,
url_loader_network_observer_remote.InitWithNewPipeAndPassReceiver());
request->trusted_params->url_loader_network_observer =
std::move(url_loader_network_observer_remote);
// Chromium filters headers using browser rules, while for net module we have
// every header passed. The following setting will allow us to capture the
// raw headers in the URLLoader.
request->report_raw_headers = true;
// SimpleURLLoader wants to control the request body itself. We have other
// ideas.
auto request_body = std::move(request->request_body);
auto* request_ref = request.get();
loader_ =
network::SimpleURLLoader::Create(std::move(request), kTrafficAnnotation);
if (request_body) {
request_ref->request_body = std::move(request_body);
}
loader_->SetAllowHttpErrorResults(true);
loader_->SetURLLoaderFactoryOptions(options);
loader_->SetOnResponseStartedCallback(base::BindOnce(
&SimpleURLLoaderWrapper::OnResponseStarted, base::Unretained(this)));
loader_->SetOnRedirectCallback(base::BindRepeating(
&SimpleURLLoaderWrapper::OnRedirect, base::Unretained(this)));
loader_->SetOnUploadProgressCallback(base::BindRepeating(
&SimpleURLLoaderWrapper::OnUploadProgress, base::Unretained(this)));
loader_->SetOnDownloadProgressCallback(base::BindRepeating(
&SimpleURLLoaderWrapper::OnDownloadProgress, base::Unretained(this)));
loader_->DownloadAsStream(url_loader_factory, this);
}
void SimpleURLLoaderWrapper::Pin() {
// Prevent ourselves from being GC'd until the request is complete. Must be
// called after gin::CreateHandle, otherwise the wrapper isn't initialized.
v8::Isolate* isolate = JavascriptEnvironment::GetIsolate();
pinned_wrapper_.Reset(isolate, GetWrapper(isolate).ToLocalChecked());
}
void SimpleURLLoaderWrapper::PinBodyGetter(v8::Local<v8::Value> body_getter) {
pinned_chunk_pipe_getter_.Reset(JavascriptEnvironment::GetIsolate(),
body_getter);
}
SimpleURLLoaderWrapper::~SimpleURLLoaderWrapper() = default;
void SimpleURLLoaderWrapper::OnAuthRequired(
const absl::optional<base::UnguessableToken>& window_id,
uint32_t request_id,
const GURL& url,
bool first_auth_attempt,
const net::AuthChallengeInfo& auth_info,
const scoped_refptr<net::HttpResponseHeaders>& head_headers,
mojo::PendingRemote<network::mojom::AuthChallengeResponder>
auth_challenge_responder) {
DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
mojo::Remote<network::mojom::AuthChallengeResponder> auth_responder(
std::move(auth_challenge_responder));
// WeakPtr because if we're Cancel()ed while waiting for auth, and the
// network service also decides to cancel at the same time and kill this
// pipe, we might end up trying to call Cancel again on dead memory.
auth_responder.set_disconnect_handler(base::BindOnce(
&SimpleURLLoaderWrapper::Cancel, weak_factory_.GetWeakPtr()));
auto cb = base::BindOnce(
[](mojo::Remote<network::mojom::AuthChallengeResponder> auth_responder,
gin::Arguments* args) {
std::u16string username_str, password_str;
if (!args->GetNext(&username_str) || !args->GetNext(&password_str)) {
auth_responder->OnAuthCredentials(absl::nullopt);
return;
}
auth_responder->OnAuthCredentials(
net::AuthCredentials(username_str, password_str));
},
std::move(auth_responder));
Emit("login", auth_info, base::AdaptCallbackForRepeating(std::move(cb)));
}
void SimpleURLLoaderWrapper::OnSSLCertificateError(
const GURL& url,
int net_error,
const net::SSLInfo& ssl_info,
bool fatal,
OnSSLCertificateErrorCallback response) {
std::move(response).Run(net_error);
}
void SimpleURLLoaderWrapper::OnClearSiteData(const GURL& url,
const std::string& header_value,
int32_t load_flags,
OnClearSiteDataCallback callback) {
std::move(callback).Run();
}
void SimpleURLLoaderWrapper::OnLoadingStateUpdate(
network::mojom::LoadInfoPtr info,
OnLoadingStateUpdateCallback callback) {
std::move(callback).Run();
}
void SimpleURLLoaderWrapper::Clone(
mojo::PendingReceiver<network::mojom::URLLoaderNetworkServiceObserver>
observer) {
url_loader_network_observer_receivers_.Add(this, std::move(observer));
}
void SimpleURLLoaderWrapper::Cancel() {
loader_.reset();
pinned_wrapper_.Reset();
pinned_chunk_pipe_getter_.Reset();
// This ensures that no further callbacks will be called, so there's no need
// for additional guards.
}
// static
gin::Handle<SimpleURLLoaderWrapper> SimpleURLLoaderWrapper::Create(
gin::Arguments* args) {
gin_helper::Dictionary opts;
if (!args->GetNext(&opts)) {
args->ThrowTypeError("Expected a dictionary");
return gin::Handle<SimpleURLLoaderWrapper>();
}
auto request = std::make_unique<network::ResourceRequest>();
opts.Get("method", &request->method);
opts.Get("url", &request->url);
request->site_for_cookies = net::SiteForCookies::FromUrl(request->url);
opts.Get("referrer", &request->referrer);
std::string origin;
opts.Get("origin", &origin);
if (!origin.empty()) {
request->request_initiator = url::Origin::Create(GURL(origin));
}
bool has_user_activation;
if (opts.Get("hasUserActivation", &has_user_activation)) {
request->trusted_params = network::ResourceRequest::TrustedParams();
request->trusted_params->has_user_activation = has_user_activation;
}
std::string mode;
if (opts.Get("mode", &mode) && !mode.empty()) {
if (mode == "navigate") {
request->mode = network::mojom::RequestMode::kNavigate;
} else if (mode == "cors") {
request->mode = network::mojom::RequestMode::kCors;
} else if (mode == "no-cors") {
request->mode = network::mojom::RequestMode::kNoCors;
} else if (mode == "same-origin") {
request->mode = network::mojom::RequestMode::kSameOrigin;
}
}
std::string destination;
if (opts.Get("destination", &destination) && !destination.empty()) {
if (destination == "empty") {
request->destination = network::mojom::RequestDestination::kEmpty;
} else if (destination == "audio") {
request->destination = network::mojom::RequestDestination::kAudio;
} else if (destination == "audioworklet") {
request->destination = network::mojom::RequestDestination::kAudioWorklet;
} else if (destination == "document") {
request->destination = network::mojom::RequestDestination::kDocument;
} else if (destination == "embed") {
request->destination = network::mojom::RequestDestination::kEmbed;
} else if (destination == "font") {
request->destination = network::mojom::RequestDestination::kFont;
} else if (destination == "frame") {
request->destination = network::mojom::RequestDestination::kFrame;
} else if (destination == "iframe") {
request->destination = network::mojom::RequestDestination::kIframe;
} else if (destination == "image") {
request->destination = network::mojom::RequestDestination::kImage;
} else if (destination == "manifest") {
request->destination = network::mojom::RequestDestination::kManifest;
} else if (destination == "object") {
request->destination = network::mojom::RequestDestination::kObject;
} else if (destination == "paintworklet") {
request->destination = network::mojom::RequestDestination::kPaintWorklet;
} else if (destination == "report") {
request->destination = network::mojom::RequestDestination::kReport;
} else if (destination == "script") {
request->destination = network::mojom::RequestDestination::kScript;
} else if (destination == "serviceworker") {
request->destination = network::mojom::RequestDestination::kServiceWorker;
} else if (destination == "style") {
request->destination = network::mojom::RequestDestination::kStyle;
} else if (destination == "track") {
request->destination = network::mojom::RequestDestination::kTrack;
} else if (destination == "video") {
request->destination = network::mojom::RequestDestination::kVideo;
} else if (destination == "worker") {
request->destination = network::mojom::RequestDestination::kWorker;
} else if (destination == "xslt") {
request->destination = network::mojom::RequestDestination::kXslt;
}
}
bool credentials_specified =
opts.Get("credentials", &request->credentials_mode);
std::vector<std::pair<std::string, std::string>> extra_headers;
if (opts.Get("extraHeaders", &extra_headers)) {
for (const auto& it : extra_headers) {
if (!net::HttpUtil::IsValidHeaderName(it.first) ||
!net::HttpUtil::IsValidHeaderValue(it.second)) {
args->ThrowTypeError("Invalid header name or value");
return gin::Handle<SimpleURLLoaderWrapper>();
}
request->headers.SetHeader(it.first, it.second);
}
}
bool use_session_cookies = false;
opts.Get("useSessionCookies", &use_session_cookies);
int options = 0;
if (!credentials_specified && !use_session_cookies) {
// This is the default case, as well as the case when credentials is not
// specified and useSessionCoookies is false. credentials_mode will be
// kInclude, but cookies will be blocked.
request->credentials_mode = network::mojom::CredentialsMode::kInclude;
options |= network::mojom::kURLLoadOptionBlockAllCookies;
}
v8::Local<v8::Value> body;
v8::Local<v8::Value> chunk_pipe_getter;
if (opts.Get("body", &body)) {
if (body->IsArrayBufferView()) {
auto buffer_body = body.As<v8::ArrayBufferView>();
auto backing_store = buffer_body->Buffer()->GetBackingStore();
request->request_body = network::ResourceRequestBody::CreateFromBytes(
static_cast<char*>(backing_store->Data()) + buffer_body->ByteOffset(),
buffer_body->ByteLength());
} else if (body->IsFunction()) {
auto body_func = body.As<v8::Function>();
mojo::PendingRemote<network::mojom::ChunkedDataPipeGetter>
data_pipe_getter;
chunk_pipe_getter = JSChunkedDataPipeGetter::Create(
args->isolate(), body_func,
data_pipe_getter.InitWithNewPipeAndPassReceiver())
.ToV8();
request->request_body =
base::MakeRefCounted<network::ResourceRequestBody>();
request->request_body->SetToChunkedDataPipe(
std::move(data_pipe_getter),
network::ResourceRequestBody::ReadOnlyOnce(false));
}
}
std::string partition;
gin::Handle<Session> session;
if (!opts.Get("session", &session)) {
if (opts.Get("partition", &partition))
session = Session::FromPartition(args->isolate(), partition);
else // default session
session = Session::FromPartition(args->isolate(), "");
}
auto url_loader_factory = session->browser_context()->GetURLLoaderFactory();
auto ret = gin::CreateHandle(
args->isolate(),
new SimpleURLLoaderWrapper(std::move(request), url_loader_factory.get(),
options));
ret->Pin();
if (!chunk_pipe_getter.IsEmpty()) {
ret->PinBodyGetter(chunk_pipe_getter);
}
return ret;
}
void SimpleURLLoaderWrapper::OnDataReceived(base::StringPiece string_piece,
base::OnceClosure resume) {
DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
v8::Isolate* isolate = JavascriptEnvironment::GetIsolate();
v8::HandleScope handle_scope(isolate);
auto array_buffer = v8::ArrayBuffer::New(isolate, string_piece.size());
auto backing_store = array_buffer->GetBackingStore();
memcpy(backing_store->Data(), string_piece.data(), string_piece.size());
Emit("data", array_buffer,
base::AdaptCallbackForRepeating(std::move(resume)));
}
void SimpleURLLoaderWrapper::OnComplete(bool success) {
if (success) {
Emit("complete");
} else {
Emit("error", net::ErrorToString(loader_->NetError()));
}
loader_.reset();
pinned_wrapper_.Reset();
pinned_chunk_pipe_getter_.Reset();
}
void SimpleURLLoaderWrapper::OnRetry(base::OnceClosure start_retry) {}
void SimpleURLLoaderWrapper::OnResponseStarted(
const GURL& final_url,
const network::mojom::URLResponseHead& response_head) {
v8::Isolate* isolate = JavascriptEnvironment::GetIsolate();
v8::HandleScope scope(isolate);
gin::Dictionary dict = gin::Dictionary::CreateEmpty(isolate);
dict.Set("statusCode", response_head.headers->response_code());
dict.Set("statusMessage", response_head.headers->GetStatusText());
dict.Set("httpVersion", response_head.headers->GetHttpVersion());
// Note that |response_head.headers| are filtered by Chromium and should not
// be used here.
DCHECK(!response_head.raw_response_headers.empty());
dict.Set("rawHeaders", response_head.raw_response_headers);
Emit("response-started", final_url, dict);
}
void SimpleURLLoaderWrapper::OnRedirect(
const net::RedirectInfo& redirect_info,
const network::mojom::URLResponseHead& response_head,
std::vector<std::string>* removed_headers) {
Emit("redirect", redirect_info, response_head.headers.get());
}
void SimpleURLLoaderWrapper::OnUploadProgress(uint64_t position,
uint64_t total) {
Emit("upload-progress", position, total);
}
void SimpleURLLoaderWrapper::OnDownloadProgress(uint64_t current) {
Emit("download-progress", current);
}
// static
gin::ObjectTemplateBuilder SimpleURLLoaderWrapper::GetObjectTemplateBuilder(
v8::Isolate* isolate) {
return gin_helper::EventEmitterMixin<
SimpleURLLoaderWrapper>::GetObjectTemplateBuilder(isolate)
.SetMethod("cancel", &SimpleURLLoaderWrapper::Cancel);
}
const char* SimpleURLLoaderWrapper::GetTypeName() {
return "SimpleURLLoaderWrapper";
}
} // namespace api
} // namespace electron