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// Copyright (c) 2021 Tulir Asokan
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
package store
import (
"crypto/md5"
"encoding/binary"
"fmt"
"strconv"
"strings"
"google.golang.org/protobuf/proto"
"go.mau.fi/libsignal/ecc"
waProto "go.mau.fi/whatsmeow/binary/proto"
)
// waVersion is the WhatsApp web client version
var waVersion = []uint32{2, 2202, 9}
// waVersionHash is the md5 hash of a dot-separated waVersion
var waVersionHash [16]byte
func init() {
waVersionParts := make([]string, len(waVersion))
for i, part := range waVersion {
waVersionParts[i] = strconv.Itoa(int(part))
}
waVersionString := strings.Join(waVersionParts, ".")
waVersionHash = md5.Sum([]byte(waVersionString))
}
var BaseClientPayload = &waProto.ClientPayload{
UserAgent: &waProto.UserAgent{
Platform: waProto.UserAgent_WEB.Enum(),
ReleaseChannel: waProto.UserAgent_RELEASE.Enum(),
AppVersion: &waProto.AppVersion{
Primary: &waVersion[0],
Secondary: &waVersion[1],
Tertiary: &waVersion[2],
},
Mcc: proto.String("000"),
Mnc: proto.String("000"),
OsVersion: proto.String("0.1.0"),
Manufacturer: proto.String(""),
Device: proto.String("Desktop"),
OsBuildNumber: proto.String("0.1.0"),
LocaleLanguageIso6391: proto.String("en"),
LocaleCountryIso31661Alpha2: proto.String("en"),
},
WebInfo: &waProto.WebInfo{
WebSubPlatform: waProto.WebInfo_WEB_BROWSER.Enum(),
},
ConnectType: waProto.ClientPayload_WIFI_UNKNOWN.Enum(),
ConnectReason: waProto.ClientPayload_USER_ACTIVATED.Enum(),
}
var CompanionProps = &waProto.CompanionProps{
Os: proto.String("whatsmeow"),
Version: &waProto.AppVersion{
Primary: proto.Uint32(0),
Secondary: proto.Uint32(1),
Tertiary: proto.Uint32(0),
},
PlatformType: waProto.CompanionProps_UNKNOWN.Enum(),
RequireFullSync: proto.Bool(false),
}
func SetOSInfo(name string, version [3]uint32) {
CompanionProps.Os = &name
CompanionProps.Version.Primary = &version[0]
CompanionProps.Version.Secondary = &version[1]
CompanionProps.Version.Tertiary = &version[2]
BaseClientPayload.UserAgent.OsVersion = proto.String(fmt.Sprintf("%d.%d.%d", version[0], version[1], version[2]))
BaseClientPayload.UserAgent.OsBuildNumber = BaseClientPayload.UserAgent.OsVersion
}
func (device *Device) getRegistrationPayload() *waProto.ClientPayload {
payload := proto.Clone(BaseClientPayload).(*waProto.ClientPayload)
regID := make([]byte, 4)
binary.BigEndian.PutUint32(regID, device.RegistrationID)
preKeyID := make([]byte, 4)
binary.BigEndian.PutUint32(preKeyID, device.SignedPreKey.KeyID)
companionProps, _ := proto.Marshal(CompanionProps)
payload.RegData = &waProto.CompanionRegData{
ERegid: regID,
EKeytype: []byte{ecc.DjbType},
EIdent: device.IdentityKey.Pub[:],
ESkeyId: preKeyID[1:],
ESkeyVal: device.SignedPreKey.Pub[:],
ESkeySig: device.SignedPreKey.Signature[:],
BuildHash: waVersionHash[:],
CompanionProps: companionProps,
}
payload.Passive = proto.Bool(false)
return payload
}
func (device *Device) getLoginPayload() *waProto.ClientPayload {
payload := proto.Clone(BaseClientPayload).(*waProto.ClientPayload)
payload.Username = proto.Uint64(device.ID.UserInt())
payload.Device = proto.Uint32(uint32(device.ID.Device))
payload.Passive = proto.Bool(true)
return payload
}
func (device *Device) GetClientPayload() *waProto.ClientPayload {
if device.ID != nil {
return device.getLoginPayload()
} else {
return device.getRegistrationPayload()
}
}
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