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Added Contact + Location Send/Receive + LiveLocation Receive

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This commit is contained in:
Adhiraj
2020-05-31 13:09:04 +05:30
parent c06b268fee
commit 96cd895443
6 changed files with 151 additions and 97 deletions
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63
WhatsAppWeb.Recv.js
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@@ -130,7 +130,7 @@ module.exports = {
*/
registerCallbackOneTime: function (parameters) {
return new Promise ((resolve, reject) => this.registerCallback (parameters, resolve))
.then (json => {
.finally (json => {
this.deregisterCallback (parameters)
return json
})
@@ -201,23 +201,25 @@ module.exports = {
* Decode a media message (video, image, document, audio) & save it to the given file
* @param {object} message the media message you want to decode
* @param {string} filename the name of the file where the media will be saved
* @return {Promise<object>} promise once the file is successfully saved, with the metadata
* @return {Promise<Object>} promise once the file is successfully saved, with the metadata
*/
decodeMediaMessage: function (message, filename) {
const getExtension = function (mimetype) {
const str = mimetype.split(";")[0].split("/")
return str[1]
}
decodeMediaMessage: async function (message, filename) {
const getExtension = (mimetype) => mimetype.split(";")[0].split("/")[1]
/*
can infer media type from the key in the message
One can infer media type from the key in the message
it is usually written as [mediaType]Message. Eg. imageMessage, audioMessage etc.
*/
let type = Object.keys(message)[0]
if (!type) {
return Promise.reject("unknown message type")
throw "unknown message type"
}
if (type === "extendedTextMessage" || type === "conversation") {
return Promise.reject("cannot decode text message")
throw "cannot decode text message"
}
if (type === "locationMessage" || type === "liveLocationMessage") {
fs.writeFileSync (filename + ".jpeg", message[type].jpegThumbnail)
return {filename: filename + ".jpeg"}
}
message = message[type]
@@ -228,30 +230,27 @@ module.exports = {
const macKey = mediaKeys.macKey
// download the message
return fetch(message.url).then (res => res.buffer())
.then(buffer => {
// first part is actual file
let file = buffer.slice(0, buffer.length-10)
// last 10 bytes is HMAC sign of file
let mac = buffer.slice(buffer.length-10, buffer.length)
// sign IV+file & check for match with mac
let testBuff = Buffer.concat([iv, file])
let sign = Utils.hmacSign(testBuff, macKey).slice(0, 10)
// our sign should equal the mac
if (sign.equals(mac)) {
let decrypted = Utils.aesDecryptWithIV(file, cipherKey, iv) // decrypt media
const buffer = await fetch(message.url).buffer()
// first part is actual file
let file = buffer.slice(0, buffer.length-10)
// last 10 bytes is HMAC sign of file
let mac = buffer.slice(buffer.length-10, buffer.length)
// sign IV+file & check for match with mac
let testBuff = Buffer.concat([iv, file])
let sign = Utils.hmacSign(testBuff, macKey).slice(0, 10)
// our sign should equal the mac
if (sign.equals(mac)) {
let decrypted = Utils.aesDecryptWithIV(file, cipherKey, iv) // decrypt media
const trueFileName = filename + "." + getExtension(message.mimetype)
fs.writeFileSync(trueFileName, decrypted)
const trueFileName = filename + "." + getExtension(message.mimetype)
fs.writeFileSync(trueFileName, decrypted)
message.filename = trueFileName
return message
} else {
throw "HMAC sign does not match"
}
})
message.filename = trueFileName
return message
} else {
throw "HMAC sign does not match"
}
}
}