249 lines
8.4 KiB
C++
249 lines
8.4 KiB
C++
// Copyright (c) 2014 GitHub, Inc.
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// Use of this source code is governed by the MIT license that can be
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// found in the LICENSE file.
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#include <vector>
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#include "gin/handle.h"
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#include "shell/common/asar/archive.h"
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#include "shell/common/asar/asar_util.h"
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#include "shell/common/gin_converters/file_path_converter.h"
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#include "shell/common/gin_helper/dictionary.h"
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#include "shell/common/node_includes.h"
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#include "shell/common/node_util.h"
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namespace {
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class Archive : public node::ObjectWrap {
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public:
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static v8::Local<v8::FunctionTemplate> CreateFunctionTemplate(
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v8::Isolate* isolate) {
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auto tpl = v8::FunctionTemplate::New(isolate, Archive::New);
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tpl->SetClassName(
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v8::String::NewFromUtf8(isolate, "Archive").ToLocalChecked());
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tpl->InstanceTemplate()->SetInternalFieldCount(1);
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NODE_SET_PROTOTYPE_METHOD(tpl, "getFileInfo", &Archive::GetFileInfo);
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NODE_SET_PROTOTYPE_METHOD(tpl, "stat", &Archive::Stat);
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NODE_SET_PROTOTYPE_METHOD(tpl, "readdir", &Archive::Readdir);
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NODE_SET_PROTOTYPE_METHOD(tpl, "realpath", &Archive::Realpath);
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NODE_SET_PROTOTYPE_METHOD(tpl, "copyFileOut", &Archive::CopyFileOut);
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NODE_SET_PROTOTYPE_METHOD(tpl, "getFdAndValidateIntegrityLater",
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&Archive::GetFD);
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return tpl;
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}
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// disable copy
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Archive(const Archive&) = delete;
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Archive& operator=(const Archive&) = delete;
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protected:
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explicit Archive(std::shared_ptr<asar::Archive> archive)
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: archive_(std::move(archive)) {}
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static void New(const v8::FunctionCallbackInfo<v8::Value>& args) {
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auto* isolate = args.GetIsolate();
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base::FilePath path;
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if (!gin::ConvertFromV8(isolate, args[0], &path)) {
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isolate->ThrowException(v8::Exception::Error(node::FIXED_ONE_BYTE_STRING(
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isolate, "failed to convert path to V8")));
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return;
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}
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std::shared_ptr<asar::Archive> archive = asar::GetOrCreateAsarArchive(path);
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if (!archive) {
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isolate->ThrowException(v8::Exception::Error(node::FIXED_ONE_BYTE_STRING(
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isolate, "failed to initialize archive")));
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return;
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}
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auto* archive_wrap = new Archive(std::move(archive));
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archive_wrap->Wrap(args.This());
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args.GetReturnValue().Set(args.This());
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}
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// Reads the offset and size of file.
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static void GetFileInfo(const v8::FunctionCallbackInfo<v8::Value>& args) {
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auto* isolate = args.GetIsolate();
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auto* wrap = node::ObjectWrap::Unwrap<Archive>(args.Holder());
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base::FilePath path;
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if (!gin::ConvertFromV8(isolate, args[0], &path)) {
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args.GetReturnValue().Set(v8::False(isolate));
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return;
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}
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asar::Archive::FileInfo info;
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if (!wrap->archive_ || !wrap->archive_->GetFileInfo(path, &info)) {
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args.GetReturnValue().Set(v8::False(isolate));
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return;
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}
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gin_helper::Dictionary dict(isolate, v8::Object::New(isolate));
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dict.Set("size", info.size);
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dict.Set("unpacked", info.unpacked);
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dict.Set("offset", info.offset);
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if (info.integrity.has_value()) {
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gin_helper::Dictionary integrity(isolate, v8::Object::New(isolate));
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asar::HashAlgorithm algorithm = info.integrity.value().algorithm;
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switch (algorithm) {
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case asar::HashAlgorithm::kSHA256:
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integrity.Set("algorithm", "SHA256");
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break;
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case asar::HashAlgorithm::kNone:
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CHECK(false);
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break;
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}
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integrity.Set("hash", info.integrity.value().hash);
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dict.Set("integrity", integrity);
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}
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args.GetReturnValue().Set(dict.GetHandle());
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}
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// Returns a fake result of fs.stat(path).
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static void Stat(const v8::FunctionCallbackInfo<v8::Value>& args) {
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auto* isolate = args.GetIsolate();
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auto* wrap = node::ObjectWrap::Unwrap<Archive>(args.Holder());
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base::FilePath path;
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if (!gin::ConvertFromV8(isolate, args[0], &path)) {
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args.GetReturnValue().Set(v8::False(isolate));
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return;
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}
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asar::Archive::Stats stats;
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if (!wrap->archive_ || !wrap->archive_->Stat(path, &stats)) {
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args.GetReturnValue().Set(v8::False(isolate));
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return;
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}
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gin_helper::Dictionary dict(isolate, v8::Object::New(isolate));
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dict.Set("size", stats.size);
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dict.Set("offset", stats.offset);
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dict.Set("isFile", stats.is_file);
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dict.Set("isDirectory", stats.is_directory);
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dict.Set("isLink", stats.is_link);
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args.GetReturnValue().Set(dict.GetHandle());
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}
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// Returns all files under a directory.
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static void Readdir(const v8::FunctionCallbackInfo<v8::Value>& args) {
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auto* isolate = args.GetIsolate();
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auto* wrap = node::ObjectWrap::Unwrap<Archive>(args.Holder());
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base::FilePath path;
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if (!gin::ConvertFromV8(isolate, args[0], &path)) {
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args.GetReturnValue().Set(v8::False(isolate));
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return;
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}
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std::vector<base::FilePath> files;
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if (!wrap->archive_ || !wrap->archive_->Readdir(path, &files)) {
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args.GetReturnValue().Set(v8::False(isolate));
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return;
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}
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args.GetReturnValue().Set(gin::ConvertToV8(isolate, files));
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}
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// Returns the path of file with symbol link resolved.
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static void Realpath(const v8::FunctionCallbackInfo<v8::Value>& args) {
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auto* isolate = args.GetIsolate();
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auto* wrap = node::ObjectWrap::Unwrap<Archive>(args.Holder());
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base::FilePath path;
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if (!gin::ConvertFromV8(isolate, args[0], &path)) {
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args.GetReturnValue().Set(v8::False(isolate));
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return;
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}
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base::FilePath realpath;
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if (!wrap->archive_ || !wrap->archive_->Realpath(path, &realpath)) {
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args.GetReturnValue().Set(v8::False(isolate));
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return;
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}
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args.GetReturnValue().Set(gin::ConvertToV8(isolate, realpath));
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}
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// Copy the file out into a temporary file and returns the new path.
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static void CopyFileOut(const v8::FunctionCallbackInfo<v8::Value>& args) {
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auto* isolate = args.GetIsolate();
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auto* wrap = node::ObjectWrap::Unwrap<Archive>(args.Holder());
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base::FilePath path;
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if (!gin::ConvertFromV8(isolate, args[0], &path)) {
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args.GetReturnValue().Set(v8::False(isolate));
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return;
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}
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base::FilePath new_path;
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if (!wrap->archive_ || !wrap->archive_->CopyFileOut(path, &new_path)) {
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args.GetReturnValue().Set(v8::False(isolate));
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return;
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}
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args.GetReturnValue().Set(gin::ConvertToV8(isolate, new_path));
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}
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// Return the file descriptor.
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static void GetFD(const v8::FunctionCallbackInfo<v8::Value>& args) {
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auto* isolate = args.GetIsolate();
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auto* wrap = node::ObjectWrap::Unwrap<Archive>(args.Holder());
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args.GetReturnValue().Set(gin::ConvertToV8(
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isolate, wrap->archive_ ? wrap->archive_->GetUnsafeFD() : -1));
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}
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std::shared_ptr<asar::Archive> archive_;
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};
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static void InitAsarSupport(const v8::FunctionCallbackInfo<v8::Value>& args) {
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auto* isolate = args.GetIsolate();
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auto require = args[0];
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// Evaluate asar_bundle.js.
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std::vector<v8::Local<v8::String>> asar_bundle_params = {
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node::FIXED_ONE_BYTE_STRING(isolate, "require")};
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std::vector<v8::Local<v8::Value>> asar_bundle_args = {require};
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electron::util::CompileAndCall(
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isolate->GetCurrentContext(), "electron/js2c/asar_bundle",
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&asar_bundle_params, &asar_bundle_args, nullptr);
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}
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static void SplitPath(const v8::FunctionCallbackInfo<v8::Value>& args) {
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auto* isolate = args.GetIsolate();
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base::FilePath path;
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if (!gin::ConvertFromV8(isolate, args[0], &path)) {
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args.GetReturnValue().Set(v8::False(isolate));
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return;
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}
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auto dict = gin_helper::Dictionary::CreateEmpty(isolate);
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base::FilePath asar_path, file_path;
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if (asar::GetAsarArchivePath(path, &asar_path, &file_path, true)) {
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dict.Set("isAsar", true);
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dict.Set("asarPath", asar_path);
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dict.Set("filePath", file_path);
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} else {
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dict.Set("isAsar", false);
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}
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args.GetReturnValue().Set(dict.GetHandle());
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}
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void Initialize(v8::Local<v8::Object> exports,
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v8::Local<v8::Value> unused,
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v8::Local<v8::Context> context,
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void* priv) {
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auto* isolate = exports->GetIsolate();
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auto cons = Archive::CreateFunctionTemplate(isolate)
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->GetFunction(context)
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.ToLocalChecked();
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cons->SetName(node::FIXED_ONE_BYTE_STRING(isolate, "Archive"));
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exports->Set(context, node::FIXED_ONE_BYTE_STRING(isolate, "Archive"), cons)
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.Check();
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NODE_SET_METHOD(exports, "splitPath", &SplitPath);
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NODE_SET_METHOD(exports, "initAsarSupport", &InitAsarSupport);
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}
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} // namespace
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NODE_LINKED_BINDING_CONTEXT_AWARE(electron_common_asar, Initialize)
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