add: initial working poc
This commit is contained in:
commit
4372632d93
GPG Key ID:
7DD45520C01CD85D
1
.gitignore
vendored
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1
.gitignore
vendored
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@ -0,0 +1 @@
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node_modules
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15
package.json
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15
package.json
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{
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"name": "ussd-tg-proxy",
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"version": "0.0.1",
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"description": "ussd-tg-proxy",
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"main": "src/bot.js",
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"repository": "https://git.grassecon.net/grassrootseconomics/ussd-tg-proxy.git",
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"author": "Mohamed Sohail <sohalazim@pm.me>",
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"license": "GPL-3",
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"private": false,
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"dependencies": {
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"grammy": "^1.6.1",
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"ioredis": "^4.28.3",
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"phin": "^3.6.1"
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}
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}
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70
src/bot.js
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70
src/bot.js
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// std lib
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const crypto = require("crypto");
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// npm imports
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const { Bot, Keyboard } = require("grammy");
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// module imports
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const cache = require("./cache");
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const request = require("./request");
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// TODO: get value from confini
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// TODO: webhook support
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const bot = new Bot("");
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// TODO: handle errors
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bot.command("start", async (ctx) => {
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const tgLinked = await cache.get(ctx.msg.from.id);
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if (tgLinked) {
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await cache.set(tgLinked, crypto.randomBytes(16).toString("hex"));
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const res = await request.proxy(tgLinked);
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return ctx.reply(res.text);
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}
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const keyboard = new Keyboard();
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return await ctx.reply(
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"Click on the button below to link your phone number.",
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{
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reply_markup: keyboard.requestContact("Link Phone"),
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}
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);
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});
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// TODO: handle errors
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bot.on("message:text", async (ctx) => {
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const tgLinked = await cache.get(ctx.msg.from.id);
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if (tgLinked) {
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const res = await request.proxy(tgLinked, ctx.msg.text);
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if (res.code !== "END") {
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return ctx.reply(res.text);
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}
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return await cache.del(tgLinked);
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}
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return await ctx.reply(
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"Session expired or account not linked. /start the bot again to access your Sarafu account."
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);
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});
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// TODO: handle errors
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bot.on("msg:contact", async (ctx) => {
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// TODO: check if msg is reply from bot to prevent contact share bypass
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const contact = ctx.msg.contact;
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if (contact.phone_number.slice(0, 4) !== "+254") {
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return ctx.reply("Sarafu is only available in Kenya at the moment.");
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}
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// TODO: use contact.user_id in actual guard to prevent contact share bypass
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await cache.set(ctx.msg.from.id, contact.phone_number.slice(1));
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return ctx.reply(
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"Phone number successfully linked. /start the bot again to access your Sarafu account."
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);
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});
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bot.start();
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6
src/cache.js
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6
src/cache.js
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const Redis = require("ioredis");
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// TODO: get value from confini
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const cache = new Redis();
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module.exports = cache;
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30
src/request.js
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30
src/request.js
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// npm imports
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const phin = require("phin");
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// module imports
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const cache = require("./cache");
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const util = require("./utils");
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// proxy requests to ussd-server
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// TODO: handle errors
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async function proxy(phone, input = "") {
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const sessionId = await cache.get(phone);
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const { body } = await phin({
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// TODO: get value from confini
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url: "",
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method: "POST",
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parse: "string",
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form: {
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sessionId: sessionId,
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phoneNumber: phone,
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// TODO: get value from confini
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serviceCode: "",
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text: input,
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},
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});
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return util.parseUssdResponse(body);
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}
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module.exports = { proxy };
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20
src/utils.js
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20
src/utils.js
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// this regex extracts ussd reply options
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const regex = /(\d).\s/g;
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// TODO: converts the text to a telegram keyboard
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function createKeyboard(input) {
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return Array.from(input.matchAll(regex), (m) => m[1]);
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}
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// parses ussd responses to code and text
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function parseUssdResponse(input) {
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return {
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code: input.slice(0, 3),
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text: input.slice(4),
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};
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}
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module.exports = {
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createKeyboard,
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parseUssdResponse,
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};
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148
yarn.lock
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148
yarn.lock
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# THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
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# yarn lockfile v1
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"@grammyjs/types@^2.5.1":
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version "2.5.1"
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resolved "https://registry.yarnpkg.com/@grammyjs/types/-/types-2.5.1.tgz#3fab98b6180440bbe5ddfbe4f2097d99c8643444"
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integrity sha512-ZJ+X+w5qo6YxCRDWt63+SD2iX+xitP3Z7ieLUWw1b7OanljAMjPRry2PvBRoA1Zg0nFqulxFtiAHxxN1v8BXiQ==
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abort-controller@^3.0.0:
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version "3.0.0"
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resolved "https://registry.yarnpkg.com/abort-controller/-/abort-controller-3.0.0.tgz#eaf54d53b62bae4138e809ca225c8439a6efb392"
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dependencies:
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event-target-shim "^5.0.0"
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centra@^2.4.2:
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version "2.5.0"
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resolved "https://registry.yarnpkg.com/centra/-/centra-2.5.0.tgz#854c30f9a3ff50da49fa69a8cb441aa25aa1e8e8"
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integrity sha512-CnSF1HD8vOOgNbE4P2fZEhdhfAohvpcF3DSdSvEcSHDAZvr+Xfw73isT8SXJJc3VMBqSwjXhr29/ikHUgFcypg==
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cluster-key-slot@^1.1.0:
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version "1.1.0"
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resolved "https://registry.yarnpkg.com/cluster-key-slot/-/cluster-key-slot-1.1.0.tgz#30474b2a981fb12172695833052bc0d01336d10d"
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integrity sha512-2Nii8p3RwAPiFwsnZvukotvow2rIHM+yQ6ZcBXGHdniadkYGZYiGmkHJIbZPIV9nfv7m/U1IPMVVcAhoWFeklw==
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debug@^4.3.1, debug@^4.3.3:
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version "4.3.3"
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resolved "https://registry.yarnpkg.com/debug/-/debug-4.3.3.tgz#04266e0b70a98d4462e6e288e38259213332b664"
|
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dependencies:
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ms "2.1.2"
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denque@^1.1.0:
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version "1.5.1"
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resolved "https://registry.yarnpkg.com/denque/-/denque-1.5.1.tgz#07f670e29c9a78f8faecb2566a1e2c11929c5cbf"
|
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|
||||
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event-target-shim@^5.0.0:
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version "5.0.1"
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resolved "https://registry.yarnpkg.com/event-target-shim/-/event-target-shim-5.0.1.tgz#5d4d3ebdf9583d63a5333ce2deb7480ab2b05789"
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grammy@^1.6.1:
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version "1.6.1"
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resolved "https://registry.yarnpkg.com/grammy/-/grammy-1.6.1.tgz#7d6390993e830c7330022eddf5f5003054724231"
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dependencies:
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"@grammyjs/types" "^2.5.1"
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abort-controller "^3.0.0"
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debug "^4.3.3"
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node-fetch "^2.6.5"
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ioredis@^4.28.3:
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version "4.28.3"
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resolved "https://registry.yarnpkg.com/ioredis/-/ioredis-4.28.3.tgz#b13fce8a6a7c525ba22e666d72980a3c0ba799aa"
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dependencies:
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cluster-key-slot "^1.1.0"
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debug "^4.3.1"
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denque "^1.1.0"
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lodash.defaults "^4.2.0"
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lodash.flatten "^4.4.0"
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lodash.isarguments "^3.1.0"
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p-map "^2.1.0"
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redis-commands "1.7.0"
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redis-errors "^1.2.0"
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redis-parser "^3.0.0"
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standard-as-callback "^2.1.0"
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lodash.defaults@^4.2.0:
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version "4.2.0"
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resolved "https://registry.yarnpkg.com/lodash.defaults/-/lodash.defaults-4.2.0.tgz#d09178716ffea4dde9e5fb7b37f6f0802274580c"
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integrity sha1-0JF4cW/+pN3p5ft7N/bwgCJ0WAw=
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||||
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lodash.flatten@^4.4.0:
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version "4.4.0"
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resolved "https://registry.yarnpkg.com/lodash.flatten/-/lodash.flatten-4.4.0.tgz#f31c22225a9632d2bbf8e4addbef240aa765a61f"
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integrity sha1-8xwiIlqWMtK7+OSt2+8kCqdlph8=
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||||
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||||
lodash.isarguments@^3.1.0:
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version "3.1.0"
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resolved "https://registry.yarnpkg.com/lodash.isarguments/-/lodash.isarguments-3.1.0.tgz#2f573d85c6a24289ff00663b491c1d338ff3458a"
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integrity sha1-L1c9hcaiQon/AGY7SRwdM4/zRYo=
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||||
ms@2.1.2:
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version "2.1.2"
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resolved "https://registry.yarnpkg.com/ms/-/ms-2.1.2.tgz#d09d1f357b443f493382a8eb3ccd183872ae6009"
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||||
|
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node-fetch@^2.6.5:
|
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version "2.6.6"
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resolved "https://registry.yarnpkg.com/node-fetch/-/node-fetch-2.6.6.tgz#1751a7c01834e8e1697758732e9efb6eeadfaf89"
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|
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dependencies:
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whatwg-url "^5.0.0"
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p-map@^2.1.0:
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version "2.1.0"
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resolved "https://registry.yarnpkg.com/p-map/-/p-map-2.1.0.tgz#310928feef9c9ecc65b68b17693018a665cea175"
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||||
phin@^3.6.1:
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version "3.6.1"
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||||
resolved "https://registry.yarnpkg.com/phin/-/phin-3.6.1.tgz#652f61b3dbb0957bc0413a15ef55dfa4e39c303c"
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|
||||
dependencies:
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||||
centra "^2.4.2"
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redis-commands@1.7.0:
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version "1.7.0"
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resolved "https://registry.yarnpkg.com/redis-commands/-/redis-commands-1.7.0.tgz#15a6fea2d58281e27b1cd1acfb4b293e278c3a89"
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|
||||
redis-errors@^1.0.0, redis-errors@^1.2.0:
|
||||
version "1.2.0"
|
||||
resolved "https://registry.yarnpkg.com/redis-errors/-/redis-errors-1.2.0.tgz#eb62d2adb15e4eaf4610c04afe1529384250abad"
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integrity sha1-62LSrbFeTq9GEMBK/hUpOEJQq60=
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|
||||
redis-parser@^3.0.0:
|
||||
version "3.0.0"
|
||||
resolved "https://registry.yarnpkg.com/redis-parser/-/redis-parser-3.0.0.tgz#b66d828cdcafe6b4b8a428a7def4c6bcac31c8b4"
|
||||
integrity sha1-tm2CjNyv5rS4pCin3vTGvKwxyLQ=
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||||
dependencies:
|
||||
redis-errors "^1.0.0"
|
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|
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standard-as-callback@^2.1.0:
|
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version "2.1.0"
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resolved "https://registry.yarnpkg.com/standard-as-callback/-/standard-as-callback-2.1.0.tgz#8953fc05359868a77b5b9739a665c5977bb7df45"
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|
||||
|
||||
tr46@~0.0.3:
|
||||
version "0.0.3"
|
||||
resolved "https://registry.yarnpkg.com/tr46/-/tr46-0.0.3.tgz#8184fd347dac9cdc185992f3a6622e14b9d9ab6a"
|
||||
integrity sha1-gYT9NH2snNwYWZLzpmIuFLnZq2o=
|
||||
|
||||
webidl-conversions@^3.0.0:
|
||||
version "3.0.1"
|
||||
resolved "https://registry.yarnpkg.com/webidl-conversions/-/webidl-conversions-3.0.1.tgz#24534275e2a7bc6be7bc86611cc16ae0a5654871"
|
||||
integrity sha1-JFNCdeKnvGvnvIZhHMFq4KVlSHE=
|
||||
|
||||
whatwg-url@^5.0.0:
|
||||
version "5.0.0"
|
||||
resolved "https://registry.yarnpkg.com/whatwg-url/-/whatwg-url-5.0.0.tgz#966454e8765462e37644d3626f6742ce8b70965d"
|
||||
integrity sha1-lmRU6HZUYuN2RNNib2dCzotwll0=
|
||||
dependencies:
|
||||
tr46 "~0.0.3"
|
||||
webidl-conversions "^3.0.0"
|
||||
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