Electron调用nodejs的cpp .node扩展【非安全】
Electron调用nodejs的cpp .node扩展【非安全】
环境：
electron: 30.1.1
nodejs: 20.14.0
前言
Electron中可以非常容易的调用nodejs的js代码，但是对于cpp .node扩展需要一定的配置才能调用，下面介绍一种最简单的cpp扩展的调用方法，该方法的优点是调用简单，缺点是会降低应用程序的安全性，生产环境中需谨慎使用。
代码
$ tree
.
+--- build
| +--- Release
| | +--- addon.node
+--- addon.cpp
+--- binding.gyp
+--- CMakeLists.txt
+--- index.html
+--- index.js
+--- package.json
index.html
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8" />
<title>Hello Electron</title>
<meta http-equiv="Content-Security-Policy" content="default-src 'self' 'unsafe-inline';">
</head>
<body>
<p id="version"></p>
<p id="napi"></p>
<script>
let info = `electron: ${process.versions.electron}, nodejs: ${process.versions.node}, chrome: ${process.versions.chrome}, v8: ${process.versions.v8}`;
document.getElementById("version").innerHTML = info;
console.log(info);
const addon = require('./build/Release/addon.node');
info = addon.hello();
document.getElementById("napi").innerHTML = info;
console.log(info);
</script>
</body>
</html>
index.js
const { app, BrowserWindow } = require('electron/main');
// app.commandLine.appendSwitch('remote-debugging-port', '9222');
const createWindow = () => {
const win = new BrowserWindow({
width: 800,
height: 600,
webPreferences: {
nodeIntegration: true,
contextIsolation: false
}
})
win.loadFile('index.html');
}
app.whenReady().then(() => {
createWindow();
})
addon.cpp
#include <node_api.h>
static napi_value helloMethod(napi_env env, napi_callback_info info)
{
napi_value result;
napi_create_string_utf8(env, "hello world from napi", NAPI_AUTO_LENGTH, &result);
return result;
}
static napi_value Init(napi_env env, napi_value exports)
{
napi_property_descriptor desc = {"hello", 0, helloMethod, 0, 0, 0, napi_default, 0};
napi_define_properties(env, exports, 1, &desc);
return exports;
}
NAPI_MODULE(NODE_GYP_MODULE_NAME, Init)
binding.gyp
{
"targets": [
{
"target_name": "addon",
"sources": [ "addon.cpp" ]
}
]
}
CMakeLists.txt
cmake_minimum_required(VERSION 2.8.12)
project(addon)
message(STATUS "operation system is ${CMAKE_SYSTEM}")
add_definitions(-std=c++11)
include_directories(${CMAKE_JS_INC})
include_directories(.)
file(GLOB SOURCE_FILES addon.cpp)
add_library(${PROJECT_NAME} SHARED ${SOURCE_FILES} ${CMAKE_JS_SRC})
set_target_properties(${PROJECT_NAME} PROPERTIES PREFIX "" SUFFIX ".node")
target_link_libraries(${PROJECT_NAME} ${CMAKE_JS_LIB})
package.json
{
"name": "my-electron-app",
"version": "1.0.0",
"description": "",
"main": "index.js",
"scripts": {
"start": "electron ."
}
}
编译
node-gyp configure build
结果
electron: 30.1.1, nodejs: 20.14.0, chrome: 124.0.6367.243, v8: 12.4.254.20-electron.0
hello world from napi
禁用 contextIsolation 和启用 nodeIntegration，会降低应用的安全性。务必谨慎使用，并确保你信任加载的所有代码和资源。