ecki/Node.js-14-Cookbook
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Chapter 9: Malicious Input samples

Browse Source
This commit is contained in:
Beth Griggs 2020-09-06 00:20:09 +01:00
parent d8520f9bea
commit a77f753e2f
No known key found for this signature in database
GPG Key ID: D7062848A1AB005C
7 changed files with 558 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
Chapter09/express-input/fixed-server.js Normal file
View File

@ -0,0 +1,20 @@
const express = require("express");
const app = express();
app.get("/", (req, res) => {
asyncWork(() => {
let msg = req.query.msg;
if (Array.isArray(msg)) msg = msg.pop();
const upper = (msg || "").toUpperCase();
res.send(upper);
});
});
app.listen(3000, () => {
console.log("Server listening on port 3000");
});
asyncWork = (callback) => {
setTimeout(callback, 0);
};

374
Chapter09/express-input/package-lock.json generated Normal file
View File

@ -0,0 +1,374 @@
{
"name": "express-input",
"version": "1.0.0",
"lockfileVersion": 1,
"requires": true,
"dependencies": {
"accepts": {
"version": "1.3.7",
"resolved": "https://registry.npmjs.org/accepts/-/accepts-1.3.7.tgz",
"integrity": "sha512-Il80Qs2WjYlJIBNzNkK6KYqlVMTbZLXgHx2oT0pU/fjRHyEp+PEfEPY0R3WCwAGVOtauxh1hOxNgIf5bv7dQpA==",
"requires": {
"mime-types": "~2.1.24",
"negotiator": "0.6.2"
}
},
"array-flatten": {
"version": "1.1.1",
"resolved": "https://registry.npmjs.org/array-flatten/-/array-flatten-1.1.1.tgz",
"integrity": "sha1-ml9pkFGx5wczKPKgCJaLZOopVdI="
},
"body-parser": {
"version": "1.19.0",
"resolved": "https://registry.npmjs.org/body-parser/-/body-parser-1.19.0.tgz",
"integrity": "sha512-dhEPs72UPbDnAQJ9ZKMNTP6ptJaionhP5cBb541nXPlW60Jepo9RV/a4fX4XWW9CuFNK22krhrj1+rgzifNCsw==",
"requires": {
"bytes": "3.1.0",
"content-type": "~1.0.4",
"debug": "2.6.9",
"depd": "~1.1.2",
"http-errors": "1.7.2",
"iconv-lite": "0.4.24",
"on-finished": "~2.3.0",
"qs": "6.7.0",
"raw-body": "2.4.0",
"type-is": "~1.6.17"
}
},
"bytes": {
"version": "3.1.0",
"resolved": "https://registry.npmjs.org/bytes/-/bytes-3.1.0.tgz",
"integrity": "sha512-zauLjrfCG+xvoyaqLoV8bLVXXNGC4JqlxFCutSDWA6fJrTo2ZuvLYTqZ7aHBLZSMOopbzwv8f+wZcVzfVTI2Dg=="
},
"content-disposition": {
"version": "0.5.3",
"resolved": "https://registry.npmjs.org/content-disposition/-/content-disposition-0.5.3.tgz",
"integrity": "sha512-ExO0774ikEObIAEV9kDo50o+79VCUdEB6n6lzKgGwupcVeRlhrj3qGAfwq8G6uBJjkqLrhT0qEYFcWng8z1z0g==",
"requires": {
"safe-buffer": "5.1.2"
}
},
"content-type": {
"version": "1.0.4",
"resolved": "https://registry.npmjs.org/content-type/-/content-type-1.0.4.tgz",
"integrity": "sha512-hIP3EEPs8tB9AT1L+NUqtwOAps4mk2Zob89MWXMHjHWg9milF/j4osnnQLXBCBFBk/tvIG/tUc9mOUJiPBhPXA=="
},
"cookie": {
"version": "0.4.0",
"resolved": "https://registry.npmjs.org/cookie/-/cookie-0.4.0.tgz",
"integrity": "sha512-+Hp8fLp57wnUSt0tY0tHEXh4voZRDnoIrZPqlo3DPiI4y9lwg/jqx+1Om94/W6ZaPDOUbnjOt/99w66zk+l1Xg=="
},
"cookie-signature": {
"version": "1.0.6",
"resolved": "https://registry.npmjs.org/cookie-signature/-/cookie-signature-1.0.6.tgz",
"integrity": "sha1-4wOogrNCzD7oylE6eZmXNNqzriw="
},
"debug": {
"version": "2.6.9",
"resolved": "https://registry.npmjs.org/debug/-/debug-2.6.9.tgz",
"integrity": "sha512-bC7ElrdJaJnPbAP+1EotYvqZsb3ecl5wi6Bfi6BJTUcNowp6cvspg0jXznRTKDjm/E7AdgFBVeAPVMNcKGsHMA==",
"requires": {
"ms": "2.0.0"
}
},
"depd": {
"version": "1.1.2",
"resolved": "https://registry.npmjs.org/depd/-/depd-1.1.2.tgz",
"integrity": "sha1-m81S4UwJd2PnSbJ0xDRu0uVgtak="
},
"destroy": {
"version": "1.0.4",
"resolved": "https://registry.npmjs.org/destroy/-/destroy-1.0.4.tgz",
"integrity": "sha1-l4hXRCxEdJ5CBmE+N5RiBYJqvYA="
},
"ee-first": {
"version": "1.1.1",
"resolved": "https://registry.npmjs.org/ee-first/-/ee-first-1.1.1.tgz",
"integrity": "sha1-WQxhFWsK4vTwJVcyoViyZrxWsh0="
},
"encodeurl": {
"version": "1.0.2",
"resolved": "https://registry.npmjs.org/encodeurl/-/encodeurl-1.0.2.tgz",
"integrity": "sha1-rT/0yG7C0CkyL1oCw6mmBslbP1k="
},
"escape-html": {
"version": "1.0.3",
"resolved": "https://registry.npmjs.org/escape-html/-/escape-html-1.0.3.tgz",
"integrity": "sha1-Aljq5NPQwJdN4cFpGI7wBR0dGYg="
},
"etag": {
"version": "1.8.1",
"resolved": "https://registry.npmjs.org/etag/-/etag-1.8.1.tgz",
"integrity": "sha1-Qa4u62XvpiJorr/qg6x9eSmbCIc="
},
"express": {
"version": "4.17.1",
"resolved": "https://registry.npmjs.org/express/-/express-4.17.1.tgz",
"integrity": "sha512-mHJ9O79RqluphRrcw2X/GTh3k9tVv8YcoyY4Kkh4WDMUYKRZUq0h1o0w2rrrxBqM7VoeUVqgb27xlEMXTnYt4g==",
"requires": {
"accepts": "~1.3.7",
"array-flatten": "1.1.1",
"body-parser": "1.19.0",
"content-disposition": "0.5.3",
"content-type": "~1.0.4",
"cookie": "0.4.0",
"cookie-signature": "1.0.6",
"debug": "2.6.9",
"depd": "~1.1.2",
"encodeurl": "~1.0.2",
"escape-html": "~1.0.3",
"etag": "~1.8.1",
"finalhandler": "~1.1.2",
"fresh": "0.5.2",
"merge-descriptors": "1.0.1",
"methods": "~1.1.2",
"on-finished": "~2.3.0",
"parseurl": "~1.3.3",
"path-to-regexp": "0.1.7",
"proxy-addr": "~2.0.5",
"qs": "6.7.0",
"range-parser": "~1.2.1",
"safe-buffer": "5.1.2",
"send": "0.17.1",
"serve-static": "1.14.1",
"setprototypeof": "1.1.1",
"statuses": "~1.5.0",
"type-is": "~1.6.18",
"utils-merge": "1.0.1",
"vary": "~1.1.2"
}
},
"finalhandler": {
"version": "1.1.2",
"resolved": "https://registry.npmjs.org/finalhandler/-/finalhandler-1.1.2.tgz",
"integrity": "sha512-aAWcW57uxVNrQZqFXjITpW3sIUQmHGG3qSb9mUah9MgMC4NeWhNOlNjXEYq3HjRAvL6arUviZGGJsBg6z0zsWA==",
"requires": {
"debug": "2.6.9",
"encodeurl": "~1.0.2",
"escape-html": "~1.0.3",
"on-finished": "~2.3.0",
"parseurl": "~1.3.3",
"statuses": "~1.5.0",
"unpipe": "~1.0.0"
}
},
"forwarded": {
"version": "0.1.2",
"resolved": "https://registry.npmjs.org/forwarded/-/forwarded-0.1.2.tgz",
"integrity": "sha1-mMI9qxF1ZXuMBXPozszZGw/xjIQ="
},
"fresh": {
"version": "0.5.2",
"resolved": "https://registry.npmjs.org/fresh/-/fresh-0.5.2.tgz",
"integrity": "sha1-PYyt2Q2XZWn6g1qx+OSyOhBWBac="
},
"http-errors": {
"version": "1.7.2",
"resolved": "https://registry.npmjs.org/http-errors/-/http-errors-1.7.2.tgz",
"integrity": "sha512-uUQBt3H/cSIVfch6i1EuPNy/YsRSOUBXTVfZ+yR7Zjez3qjBz6i9+i4zjNaoqcoFVI4lQJ5plg63TvGfRSDCRg==",
"requires": {
"depd": "~1.1.2",
"inherits": "2.0.3",
"setprototypeof": "1.1.1",
"statuses": ">= 1.5.0 < 2",
"toidentifier": "1.0.0"
}
},
"iconv-lite": {
"version": "0.4.24",
"resolved": "https://registry.npmjs.org/iconv-lite/-/iconv-lite-0.4.24.tgz",
"integrity": "sha512-v3MXnZAcvnywkTUEZomIActle7RXXeedOR31wwl7VlyoXO4Qi9arvSenNQWne1TcRwhCL1HwLI21bEqdpj8/rA==",
"requires": {
"safer-buffer": ">= 2.1.2 < 3"
}
},
"inherits": {
"version": "2.0.3",
"resolved": "https://registry.npmjs.org/inherits/-/inherits-2.0.3.tgz",
"integrity": "sha1-Yzwsg+PaQqUC9SRmAiSA9CCCYd4="
},
"ipaddr.js": {
"version": "1.9.1",
"resolved": "https://registry.npmjs.org/ipaddr.js/-/ipaddr.js-1.9.1.tgz",
"integrity": "sha512-0KI/607xoxSToH7GjN1FfSbLoU0+btTicjsQSWQlh/hZykN8KpmMf7uYwPW3R+akZ6R/w18ZlXSHBYXiYUPO3g=="
},
"media-typer": {
"version": "0.3.0",
"resolved": "https://registry.npmjs.org/media-typer/-/media-typer-0.3.0.tgz",
"integrity": "sha1-hxDXrwqmJvj/+hzgAWhUUmMlV0g="
},
"merge-descriptors": {
"version": "1.0.1",
"resolved": "https://registry.npmjs.org/merge-descriptors/-/merge-descriptors-1.0.1.tgz",
"integrity": "sha1-sAqqVW3YtEVoFQ7J0blT8/kMu2E="
},
"methods": {
"version": "1.1.2",
"resolved": "https://registry.npmjs.org/methods/-/methods-1.1.2.tgz",
"integrity": "sha1-VSmk1nZUE07cxSZmVoNbD4Ua/O4="
},
"mime": {
"version": "1.6.0",
"resolved": "https://registry.npmjs.org/mime/-/mime-1.6.0.tgz",
"integrity": "sha512-x0Vn8spI+wuJ1O6S7gnbaQg8Pxh4NNHb7KSINmEWKiPE4RKOplvijn+NkmYmmRgP68mc70j2EbeTFRsrswaQeg=="
},
"mime-db": {
"version": "1.44.0",
"resolved": "https://registry.npmjs.org/mime-db/-/mime-db-1.44.0.tgz",
"integrity": "sha512-/NOTfLrsPBVeH7YtFPgsVWveuL+4SjjYxaQ1xtM1KMFj7HdxlBlxeyNLzhyJVx7r4rZGJAZ/6lkKCitSc/Nmpg=="
},
"mime-types": {
"version": "2.1.27",
"resolved": "https://registry.npmjs.org/mime-types/-/mime-types-2.1.27.tgz",
"integrity": "sha512-JIhqnCasI9yD+SsmkquHBxTSEuZdQX5BuQnS2Vc7puQQQ+8yiP5AY5uWhpdv4YL4VM5c6iliiYWPgJ/nJQLp7w==",
"requires": {
"mime-db": "1.44.0"
}
},
"ms": {
"version": "2.0.0",
"resolved": "https://registry.npmjs.org/ms/-/ms-2.0.0.tgz",
"integrity": "sha1-VgiurfwAvmwpAd9fmGF4jeDVl8g="
},
"negotiator": {
"version": "0.6.2",
"resolved": "https://registry.npmjs.org/negotiator/-/negotiator-0.6.2.tgz",
"integrity": "sha512-hZXc7K2e+PgeI1eDBe/10Ard4ekbfrrqG8Ep+8Jmf4JID2bNg7NvCPOZN+kfF574pFQI7mum2AUqDidoKqcTOw=="
},
"on-finished": {
"version": "2.3.0",
"resolved": "https://registry.npmjs.org/on-finished/-/on-finished-2.3.0.tgz",
"integrity": "sha1-IPEzZIGwg811M3mSoWlxqi2QaUc=",
"requires": {
"ee-first": "1.1.1"
}
},
"parseurl": {
"version": "1.3.3",
"resolved": "https://registry.npmjs.org/parseurl/-/parseurl-1.3.3.tgz",
"integrity": "sha512-CiyeOxFT/JZyN5m0z9PfXw4SCBJ6Sygz1Dpl0wqjlhDEGGBP1GnsUVEL0p63hoG1fcj3fHynXi9NYO4nWOL+qQ=="
},
"path-to-regexp": {
"version": "0.1.7",
"resolved": "https://registry.npmjs.org/path-to-regexp/-/path-to-regexp-0.1.7.tgz",
"integrity": "sha1-32BBeABfUi8V60SQ5yR6G/qmf4w="
},
"proxy-addr": {
"version": "2.0.6",
"resolved": "https://registry.npmjs.org/proxy-addr/-/proxy-addr-2.0.6.tgz",
"integrity": "sha512-dh/frvCBVmSsDYzw6n926jv974gddhkFPfiN8hPOi30Wax25QZyZEGveluCgliBnqmuM+UJmBErbAUFIoDbjOw==",
"requires": {
"forwarded": "~0.1.2",
"ipaddr.js": "1.9.1"
}
},
"qs": {
"version": "6.7.0",
"resolved": "https://registry.npmjs.org/qs/-/qs-6.7.0.tgz",
"integrity": "sha512-VCdBRNFTX1fyE7Nb6FYoURo/SPe62QCaAyzJvUjwRaIsc+NePBEniHlvxFmmX56+HZphIGtV0XeCirBtpDrTyQ=="
},
"range-parser": {
"version": "1.2.1",
"resolved": "https://registry.npmjs.org/range-parser/-/range-parser-1.2.1.tgz",
"integrity": "sha512-Hrgsx+orqoygnmhFbKaHE6c296J+HTAQXoxEF6gNupROmmGJRoyzfG3ccAveqCBrwr/2yxQ5BVd/GTl5agOwSg=="
},
"raw-body": {
"version": "2.4.0",
"resolved": "https://registry.npmjs.org/raw-body/-/raw-body-2.4.0.tgz",
"integrity": "sha512-4Oz8DUIwdvoa5qMJelxipzi/iJIi40O5cGV1wNYp5hvZP8ZN0T+jiNkL0QepXs+EsQ9XJ8ipEDoiH70ySUJP3Q==",
"requires": {
"bytes": "3.1.0",
"http-errors": "1.7.2",
"iconv-lite": "0.4.24",
"unpipe": "1.0.0"
}
},
"safe-buffer": {
"version": "5.1.2",
"resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.1.2.tgz",
"integrity": "sha512-Gd2UZBJDkXlY7GbJxfsE8/nvKkUEU1G38c1siN6QP6a9PT9MmHB8GnpscSmMJSoF8LOIrt8ud/wPtojys4G6+g=="
},
"safer-buffer": {
"version": "2.1.2",
"resolved": "https://registry.npmjs.org/safer-buffer/-/safer-buffer-2.1.2.tgz",
"integrity": "sha512-YZo3K82SD7Riyi0E1EQPojLz7kpepnSQI9IyPbHHg1XXXevb5dJI7tpyN2ADxGcQbHG7vcyRHk0cbwqcQriUtg=="
},
"send": {
"version": "0.17.1",
"resolved": "https://registry.npmjs.org/send/-/send-0.17.1.tgz",
"integrity": "sha512-BsVKsiGcQMFwT8UxypobUKyv7irCNRHk1T0G680vk88yf6LBByGcZJOTJCrTP2xVN6yI+XjPJcNuE3V4fT9sAg==",
"requires": {
"debug": "2.6.9",
"depd": "~1.1.2",
"destroy": "~1.0.4",
"encodeurl": "~1.0.2",
"escape-html": "~1.0.3",
"etag": "~1.8.1",
"fresh": "0.5.2",
"http-errors": "~1.7.2",
"mime": "1.6.0",
"ms": "2.1.1",
"on-finished": "~2.3.0",
"range-parser": "~1.2.1",
"statuses": "~1.5.0"
},
"dependencies": {
"ms": {
"version": "2.1.1",
"resolved": "https://registry.npmjs.org/ms/-/ms-2.1.1.tgz",
"integrity": "sha512-tgp+dl5cGk28utYktBsrFqA7HKgrhgPsg6Z/EfhWI4gl1Hwq8B/GmY/0oXZ6nF8hDVesS/FpnYaD/kOWhYQvyg=="
}
}
},
"serve-static": {
"version": "1.14.1",
"resolved": "https://registry.npmjs.org/serve-static/-/serve-static-1.14.1.tgz",
"integrity": "sha512-JMrvUwE54emCYWlTI+hGrGv5I8dEwmco/00EvkzIIsR7MqrHonbD9pO2MOfFnpFntl7ecpZs+3mW+XbQZu9QCg==",
"requires": {
"encodeurl": "~1.0.2",
"escape-html": "~1.0.3",
"parseurl": "~1.3.3",
"send": "0.17.1"
}
},
"setprototypeof": {
"version": "1.1.1",
"resolved": "https://registry.npmjs.org/setprototypeof/-/setprototypeof-1.1.1.tgz",
"integrity": "sha512-JvdAWfbXeIGaZ9cILp38HntZSFSo3mWg6xGcJJsd+d4aRMOqauag1C63dJfDw7OaMYwEbHMOxEZ1lqVRYP2OAw=="
},
"statuses": {
"version": "1.5.0",
"resolved": "https://registry.npmjs.org/statuses/-/statuses-1.5.0.tgz",
"integrity": "sha1-Fhx9rBd2Wf2YEfQ3cfqZOBR4Yow="
},
"toidentifier": {
"version": "1.0.0",
"resolved": "https://registry.npmjs.org/toidentifier/-/toidentifier-1.0.0.tgz",
"integrity": "sha512-yaOH/Pk/VEhBWWTlhI+qXxDFXlejDGcQipMlyxda9nthulaxLZUNcUqFxokp0vcYnvteJln5FNQDRrxj3YcbVw=="
},
"type-is": {
"version": "1.6.18",
"resolved": "https://registry.npmjs.org/type-is/-/type-is-1.6.18.tgz",
"integrity": "sha512-TkRKr9sUTxEH8MdfuCSP7VizJyzRNMjj2J2do2Jr3Kym598JVdEksuzPQCnlFPW4ky9Q+iA+ma9BGm06XQBy8g==",
"requires": {
"media-typer": "0.3.0",
"mime-types": "~2.1.24"
}
},
"unpipe": {
"version": "1.0.0",
"resolved": "https://registry.npmjs.org/unpipe/-/unpipe-1.0.0.tgz",
"integrity": "sha1-sr9O6FFKrmFltIF4KdIbLvSZBOw="
},
"utils-merge": {
"version": "1.0.1",
"resolved": "https://registry.npmjs.org/utils-merge/-/utils-merge-1.0.1.tgz",
"integrity": "sha1-n5VxD1CiZ5R7LMwSR0HBAoQn5xM="
},
"vary": {
"version": "1.1.2",
"resolved": "https://registry.npmjs.org/vary/-/vary-1.1.2.tgz",
"integrity": "sha1-IpnwLG3tMNSllhsLn3RSShj2NPw="
}
}
}

15
Chapter09/express-input/package.json Normal file
View File

@ -0,0 +1,15 @@
{
"name": "express-input",
"version": "1.0.0",
"description": "",
"main": "index.js",
"scripts": {
"test": "echo \"Error: no test specified\" && exit 1"
},
"keywords": [],
"author": "",
"license": "ISC",
"dependencies": {
"express": "^4.17.1"
}
}

18
Chapter09/express-input/server.js Normal file
View File

@ -0,0 +1,18 @@
const express = require("express");
const app = express();
app.get("/", (req, res) => {
asyncWork(() => {
const upper = (req.query.msg || "").toUpperCase();
res.send(upper);
});
});
app.listen(3000, () => {
console.log("Server listening on port 3000");
});
asyncWork = (callback) => {
setTimeout(callback, 0);
};

52
Chapter09/json-pollution/fixed-server.js Normal file
View File

@ -0,0 +1,52 @@
const http = require("http");
const { STATUS_CODES } = http;
const Ajv = require("ajv");
const ajv = new Ajv();
const schema = {
title: "Greeting",
properties: {
msg: { type: "string" },
name: { type: "string" },
},
additionalProperties: false,
required: ["msg"],
};
const validate = ajv.compile(schema);
const server = http.createServer((req, res) => {
if (req.method === "POST" && req.url === "/") {
greeting(req, res);
return;
}
res.statusCode = 404;
res.end(STATUS_CODES[res.statusCode]);
});
greeting = (req, res) => {
let data = "";
req.on("data", (chunk) => (data += chunk));
req.on("end", () => {
try {
data = JSON.parse(data);
} catch (e) {
res.end('{"msg": ""}');
return;
}
if (!validate(data, schema)) {
res.end("");
return;
}
if (data.hasOwnProperty("name")) {
res.end(`${data.msg} ${data.name}`);
} else {
res.end(data.msg);
}
});
};
server.listen(3000);

45
Chapter09/json-pollution/package-lock.json generated Normal file
View File

@ -0,0 +1,45 @@
{
"requires": true,
"lockfileVersion": 1,
"dependencies": {
"ajv": {
"version": "6.12.4",
"resolved": "https://registry.npmjs.org/ajv/-/ajv-6.12.4.tgz",
"integrity": "sha512-eienB2c9qVQs2KWexhkrdMLVDoIQCz5KSeLxwg9Lzk4DOfBtIK9PQwwufcsn1jjGuf9WZmqPMbGxOzfcuphJCQ==",
"requires": {
"fast-deep-equal": "3.1.3",
"fast-json-stable-stringify": "2.1.0",
"json-schema-traverse": "0.4.1",
"uri-js": "4.4.0"
}
},
"fast-deep-equal": {
"version": "3.1.3",
"resolved": "https://registry.npmjs.org/fast-deep-equal/-/fast-deep-equal-3.1.3.tgz",
"integrity": "sha512-f3qQ9oQy9j2AhBe/H9VC91wLmKBCCU/gDOnKNAYG5hswO7BLKj09Hc5HYNz9cGI++xlpDCIgDaitVs03ATR84Q=="
},
"fast-json-stable-stringify": {
"version": "2.1.0",
"resolved": "https://registry.npmjs.org/fast-json-stable-stringify/-/fast-json-stable-stringify-2.1.0.tgz",
"integrity": "sha512-lhd/wF+Lk98HZoTCtlVraHtfh5XYijIjalXck7saUtuanSDyLMxnHhSXEDJqHxD7msR8D0uCmqlkwjCV8xvwHw=="
},
"json-schema-traverse": {
"version": "0.4.1",
"resolved": "https://registry.npmjs.org/json-schema-traverse/-/json-schema-traverse-0.4.1.tgz",
"integrity": "sha512-xbbCH5dCYU5T8LcEhhuh7HJ88HXuW3qsI3Y0zOZFKfZEHcpWiHU/Jxzk629Brsab/mMiHQti9wMP+845RPe3Vg=="
},
"punycode": {
"version": "2.1.1",
"resolved": "https://registry.npmjs.org/punycode/-/punycode-2.1.1.tgz",
"integrity": "sha512-XRsRjdf+j5ml+y/6GKHPZbrF/8p2Yga0JPtdqTIY2Xe5ohJPD9saDJJLPvp9+NSBprVvevdXZybnj2cv8OEd0A=="
},
"uri-js": {
"version": "4.4.0",
"resolved": "https://registry.npmjs.org/uri-js/-/uri-js-4.4.0.tgz",
"integrity": "sha512-B0yRTzYdUCCn9n+F4+Gh4yIDtMQcaJsmYBDsTSG8g/OejKBodLQ2IHfN3bM7jUsRXndopT7OIXWdYqc1fjmV6g==",
"requires": {
"punycode": "2.1.1"
}
}
}
}

34
Chapter09/json-pollution/server.js Normal file
View File

@ -0,0 +1,34 @@
const http = require("http");
const { STATUS_CODES } = http;
const server = http.createServer((req, res) => {
if (req.method === "POST" && req.url === "/") {
greeting(req, res);
return;
}
res.statusCode = 404;
res.end(STATUS_CODES[res.statusCode]);
});
greeting = (req, res) => {
let data = "";
req.on("data", (chunk) => (data += chunk));
req.on("end", () => {
try {
data = JSON.parse(data);
} catch (e) {
res.end('{"msg": ""}');
return;
}
if (data.hasOwnProperty("name")) {
res.end(`${data.msg} ${data.name}`);
} else {
res.end(data.msg);
}
});
};
server.listen(3000);