web版微信协议分析

执行流程

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1.打开页面后,向服务器发送一个get请求,服务器会返回一个uuid

2.凭借这个uuid就可以获得用于登录的二维码

3.在获取到二维码和用户扫描二维码并确认登录之间,客户端会每隔一段时间向服务器发送一个get请求来查看这个二维码是否被扫描。如果二维码被扫描,返回window.code=201;,否则返回window.code=408;。如果这个二维码长时间没有被扫描,那么这个二维码就会失效。另外,如果二维码被扫描了,但是用户一直没有在手机上点确定登录,那么一段时间后,服务器也会返回window.code=408;。一旦用户点了确定登录,那么服务器就会返回window.code=200;

4.登录后,客户端会向服务器请求到cookiepass_ticket这类东西用来标识用户。

5.客户端就凭借着上面这些东西向服务器请求用户信息和联系人列表。

6.接着,客户端开启状态通知,每隔一段时间就向服务器发送请求,以此来确定客户端当前状态,比如是否有新的消息或者用户已经登出了微信。

具体分析

获得uuid

API 获取uuid
url https://login.wx.qq.com/jslogin?appid=wx782c26e4c19acffb&redirect_uri=https://wx.qq.com/cgi-bin/mmwebwx-bin/webwxnewloginpage&fun=new&lang=zh_CN&_=xxx
method get
说明 _:时间戳

响应:

window.QRLogin.code = 200; window.QRLogin.uuid = "xxx";

获得二维码

API 获得二维码
url https://login.weixin.qq.com/qrcode/uuid
method get
说明 uuid即为上面获得的uuid

检查二维码扫描状态

API 检查二维码扫描状态
url https://login.wx.qq.com/cgi-bin/mmwebwx-bin/login?loginicon=true&uuid=xxx&tip=1&r=xxx&_=xxx
method get
说明 _r好像都是时间戳,不过不发r好像也没关系

响应:

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//二维码未被扫描或者二维码被扫描但用户长时间未点击确认登录时
window.code=408;

//二维码被扫描时
window.code=201;window.userAvatar = 'xxx';

//用户点击确认登录时
window.code=200;
window.redirect_uri="xxx";

登录获取cookie

API 登录获取cookie
url https://wx.qq.com/cgi-bin/mmwebwx-bin/webwxnewloginpage?ticket=xxx&uuid=xxx&lang=zh_CN&scan=xxx&fun=new&version=v2&lang=zh_CN
method get
说明 ticket scanwindow.redirect_uri="xxx";里面

响应:

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<error>
<ret>0</ret>
<message>OK</message>
<skey>xxx</skey>
<wxsid>xxx</wxsid>
<wxuin>xxx</wxuin>
<pass_ticket>xxx</pass_ticket>
<isgrayscale>1</isgrayscale>
</error>

初始化

API 初始化
url https://wx.qq.com/cgi-bin/mmwebwx-bin/webwxinit?r=xxx&pass_ticket=xxx
method post
params {"BaseRequest":{"Uin":"xxx","Sid":"xxx","Skey":"xxx","DeviceID":"xxx"}}
请求头 Content-Type application/json;charset=utf-8
说明 DeviceID是e后面跟着一个15字节的随机数,例:e159973572418266

响应:

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{
"BaseResponse": {
"Ret": 0,
"ErrMsg": ""
},
"Count": 11,
"ContactList": [...],
"SyncKey": {
"Count": 4,
"List": [
{
"Key": 1,
"Val": 635705559
},
...
]
},
"User": {
"Uin": xxx,
"UserName": xxx,
"NickName": xxx,
"HeadImgUrl": xxx,
"RemarkName": "",
"PYInitial": "",
"PYQuanPin": "",
"RemarkPYInitial": "",
"RemarkPYQuanPin": "",
"HideInputBarFlag": 0,
"StarFriend": 0,
"Sex": 1,
"Signature": "Apt-get install B",
"AppAccountFlag": 0,
"VerifyFlag": 0,
"ContactFlag": 0,
"WebWxPluginSwitch": 0,
"HeadImgFlag": 1,
"SnsFlag": 17
},
"ChatSet": xxx,
"SKey": xxx,
"ClientVersion": 369297683,
"SystemTime": 1453124908,
"GrayScale": 1,
"InviteStartCount": 40,
"MPSubscribeMsgCount": 2,
"MPSubscribeMsgList": [...],
"ClickReportInterval": 600000
}

开启状态通知

API 开启状态通知
url https://wx.qq.com/cgi-bin/mmwebwx-bin/webwxstatusnotify?pass_ticket=xxx
method post
请求头 Content-Type:application/json;charset=utf-8

params:

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{
"BaseRequest":
{
"Uin": "xxx",
"Sid": "xxx",
"Skey": "xxx",
"DeviceID": "xxx"
},
"ClientMsgId": "时间戳",
"Code": 3,
"FromUserName": "自己的ID",
"ToUserName": "自己的ID"
}

响应:

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{
"BaseResponse": {
"Ret": 0,
"ErrMsg": ""
},
"MsgID":xxx
}

获取联系人信息

API 获取联系人信息
url https://wx.qq.com/cgi-bin/mmwebwx-bin/webwxgetcontact?pass_ticket=xxx&r=xxx&seq=0&skey=xxx
method get

响应:

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{
"BaseResponse": {
"Ret": 0,
"ErrMsg": ""
},
"MemberCount": 334,
"MemberList": [
{
"Uin": 0,
"UserName": xxx,
"NickName": "Urinx",
"HeadImgUrl": xxx,
"ContactFlag": 3,
"MemberCount": 0,
"MemberList": [],
"RemarkName": "",
"HideInputBarFlag": 0,
"Sex": 0,
"Signature": "xxx",
"VerifyFlag": 8,
"OwnerUin": 0,
"PYInitial": "URINX",
"PYQuanPin": "Urinx",
"RemarkPYInitial": "",
"RemarkPYQuanPin": "",
"StarFriend": 0,
"AppAccountFlag": 0,
"Statues": 0,
"AttrStatus": 0,
"Province": "",
"City": "",
"Alias": "Urinxs",
"SnsFlag": 0,
"UniFriend": 0,
"DisplayName": "",
"ChatRoomId": 0,
"KeyWord": "gh_",
"EncryChatRoomId": ""
},
...
],
"Seq": 0
}
API 获取联系人信息
url https://wx.qq.com/cgi-bin/mmwebwx-bin/webwxbatchgetcontact?type=ex&r=xxx0&pass_ticket=xxx
method post
请求头 Content-Type:application/json;charset=utf-8
说明 UserName是要查询具体信息的用户名,EncryChatRoomId是该用户所属的群用户名。

params:

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{
"BaseRequest": {
"Uin": "xxx",
"Sid": "xxx",
"Skey": "xxx",
"DeviceID": "xxx"
},
"Count":xx,
"List":{
0:{
"EncryChatRoomId":
"UserName":"xxx"
},
...
}
}

这两种方法的区别在于webwxbatchgetcontact返回的数据中会有群成员信息

心跳检查

API 心跳检查
url https://webpush.wx.qq.com/cgi-bin/mmwebwx-bin/synccheck?r=xxx&skey=xxx&sid=xxx&deviceid=xxx&synckey=xxx&_=xxx
method get

要把初始化中得到的SyncKey整理成key_val|key_val这种格式,例如:

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1_694411380|2_694413141|3_694412799|1000_1526698782

响应(String):

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window.synccheck={retcode:"xxx",selector:"xxx"}

retcode:
0 正常
1100 失败/登出微信
selector:
0 正常
2 新的消息
7 进入/离开聊天界面

获取最新消息

API 获取最新消息
url https://wx.qq.com/cgi-bin/mmwebwx-bin/webwxsync?sid=xxx&skey=xxx&lang=zh_CN&pass_ticket=xxx
method post
请求头 Content-Type:application/json;charset=utf-8
说明 rr:时间戳取反。

params:

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{
"BaseRequest": {
"Uin": "xxx",
"Sid": "xxx",
"Skey": "xxx",
"DeviceID": "xxx"
},
"rr":xx,
"SyncKey":{
"Count":xx,
"List":{
0:{
"Key":xx
"Val":xx
},
...
}
}
}

响应:

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BaseResponse
AddMsgCount:新增消息数
AddMsgList:新增消息列表
ModContactCount: 变更联系人数目
ModContactList: 变更联系人列表
SyncKey:新的synckey列表

当webwxsync发送完后会发送一个syncheck请求向服务器表示webwxsync响应已经收到了,这时syncheck用的synckey是发送webwxsync时收到的。若synccheck返回为window.synccheck={retcode:"0",selector:"0"},则继续发出相同请求。若返回不为以上返回值,继续POST请求webwxsync。

发送消息

API 发送消息
url https://wx.qq.com/cgi-bin/mmwebwx-bin/webwxsendmsg?lang=zh_CN&pass_ticket=xxx
method post
请求头 Content-Type:application/json;charset=utf-8

params:

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{
"BaseRequest": {
"Uin": "xxx",
"Sid": "xxx",
"Skey": "xxx",
"DeviceID": "xxx"
},
"Msg":{
"Type": 1 文字消息,
"Content": 要发送的消息,
"FromUserName": 自己的ID,
"ToUserName": 好友的ID,
"LocalID": 与clientMsgId相同,
"ClientMsgId": 时间戳左移4位随后补上4位随机数
},
"Scene": 0
}

响应:

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{
"BaseResponse": {
"Ret": 0,
"ErrMsg": ""
}
,
"MsgID": "xxx",
"LocalID": "xxx"
}

参考文章/项目