ectsm-node
v1.1.11
Published
js version implementation of ECTSM
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ECTSM-node
js version implementation of ECTSM
use in html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<body>
<script src="https://cdn.jsdelivr.net/npm/ectsm-node/dist/httpclient-min.js"></script>
<script>
async function HttpRequest() {
//new ecthttpclient instance as a global single instance
//publicKeyUrl endpoint to get unix time and public key form server
await hc.Init("http://127.0.0.1:8080/ectminfo");
if (hc == null) {
console.error("new ECTHttpClient error");
}
//get
{
const url = "http://127.0.0.1:8080/test/get";
//send request with default timeout and token 'usertoken'
const result = await hc.ECTGet(url, "usertoken");
if (result.Err != null) {
console.log("err", result.Err);
} else {
console.log("status", result.Rs.status);
console.log("get request reponse string", result.ToString());
console.log("get request reponse json", result.ToJson());
}
}
//post
{
const sendData = {
Name: "Jack",
Email: "[email protected]",
Phone: "123456789",
Age: 18,
};
const url = "http://127.0.0.1:8080/test/post";
const result = await hc.ECTPost(url, sendData, "token");
if (result.Err != null) {
console.log("err", result.Err);
} else {
console.log("status", result.Rs.status);
console.log("get request reponse string", result.ToString());
console.log("get request reponse json", result.ToJson());
}
}
}
HttpRequest();
</script>
</body>
</html>use in nodejs
npm install --save ectsm-nodeclient example
const { ECTHttpClient } = require("ectsm-node");
async function HttpRequest() {
//new ecthttpclient instance as a global single instance
//publicKeyUrl endpoint to get unix time and public key form server
const hc = new ECTHttpClient();
await hc.Init("http://127.0.0.1:8080/ectminfo");
if (hc == null) {
console.error("new ECTHttpClient error");
}
//get
{
const url = "http://127.0.0.1:8080/test/get";
//send request with default timeout and token 'usertoken'
const result = await hc.ECTGet(url, "usertoken", { timeout: 30000 });
if (result.Err != null) {
console.log("err", result.Err);
} else {
console.log("status", result.Rs.status);
console.log("get request reponse string", result.ToString());
console.log("get request reponse json", result.ToJson());
}
}
//post
{
const sendData = {
Name: "Jack",
Email: "[email protected]",
Phone: "123456789",
Age: 18,
};
const url = "http://127.0.0.1:8080/test/post";
const result = await hc.ECTPost(url, sendData, "token");
if (result.Err != null) {
console.log("err", result.Err);
} else {
console.log("status", result.Rs.status);
console.log("get request reponse string", result.ToString());
console.log("get request reponse json", result.ToJson());
}
}
}
HttpRequest();server example(use koa)
// koa for example
const Koa =require("koa")
const Router =require("koa-router")
const cors =require('koa2-cors')
const os =require("os")
//ECTServer
const {ECTHttpServer,ecthttp} = require("ectsm-node")
const privateKeyBase64Str = "bhbb4EC96zx2uUsWDtSYivzaZUzdeDKMfn+dSV9VwUI=";
const publicKeyBase64Str = "BJJlxQFcPuVTjaB/PvbqmN0py98C2iScUQlvpRUm+kpAgqJmnofCely42Hczgb7cqwTZtFTfPwm2ImdmDtvFMH4=";
let hs = null;
function InitEctHttpServer() {
console.log("InitEctHttpServer");
hs = new ECTHttpServer(privateKeyBase64Str);
if (hs == null) {
console.log("InitEctHttpServer error");
os.exit(1);
}
}
//use as middleware to get body buffer
async function GetRawBody(ctx, next) {
let data = Buffer.from("");
ctx.rawBody = await new Promise((resolve, reject) => {
ctx.req.on("data", (chunk) => {
//data+=chunk;
data = Buffer.concat([data, chunk]);
});
ctx.req.on("end", () => {
if (data.length == 0) {
console.log("no body");
resolve(null);
} else {
resolve(data);
console.log("body", data);
}
});
});
await next();
}
function StartKoaServer() {
const app = new Koa();
const router = new Router();
//cors for html use
app.use(
cors({
exposeHeaders: ["Ectm_key", "ectm_key", "Ectm_time", "ectm_time", "Ectm_token", "ectm_token"],
})
);
app.use(router.routes());
router.get("/ectminfo", async (ctx) => {
console.log("GET /ectminfo");
ctx.body = {
UnixTime: Math.floor(Date.now() / 1000),
PublicKey: publicKeyBase64Str,
};
});
router.get("/test/get", async (ctx) => {
//check header
const ectReq = await hs.HandleGet(ctx.headers);
if (ectReq.Err != null) {
ctx.status = 500;
ctx.body = Buffer.from("decrypt header error");
return;
}
//do something
//...
console.log("symmetricKey:", ectReq.GetSymmetricKey());
console.log("token:", ectReq.GetToken());
//responseData example
const data = {
Status: 0,
Msg: "get success",
Data: null,
};
const ECTResponseObj = ECTHttpServer.ECTSendBack(ctx.res, ectReq.SymmetricKey, data);
if (ECTResponseObj.err != null) {
ctx.status = 500;
ctx.body = Buffer.from(ECTResponseObj.err);
return;
}
console.log("response data:", ECTResponseObj.encryptedBodyBuffer);
ctx.body = ECTResponseObj.encryptedBodyBuffer;
});
//user GetRawBody to get body buffer
//this example in ctx.rawBody
router.post("/test/post", GetRawBody, async (ctx) => {
//check header
const ectReq = await hs.HandlePost(ctx.headers, ctx.rawBody);
if (ectReq.Err != null) {
ctx.status = 500;
ctx.body = Buffer.from("decrypt header error");
return;
}
//do something
//...
console.log("symmetricKey:", ectReq.GetSymmetricKey());
console.log("token:", ectReq.GetToken());
console.log("decryptedBody string:", ectReq.ToString());
console.log("decryptedBody json:", ectReq.ToJson());
//responseData example
const data = {
Status: 0,
Msg: "post success",
Data: null,
};
const ECTResponseObj = ECTHttpServer.ECTSendBack(ctx.res, ectReq.SymmetricKey, data);
if (ECTResponseObj.err != null) {
ctx.status = 500;
ctx.body = Buffer.from(ECTResponseObj.err);
return;
}
console.log("response data:", ECTResponseObj.encryptedBodyBuffer);
ctx.body = ECTResponseObj.encryptedBodyBuffer;
});
app.listen(8080);
console.log("server start:8080");
}
async function main() {
//init EctHttpServer instance
InitEctHttpServer();
//start http server
StartKoaServer();
}
main();