本文以微信版本6.7.3为例进行分析有hook，
大部分做微信机器人的话，首先要实时抓取微信的消息，在这里展示三种方式对微信的消息进行hook：
1.基于UI层拉取加载进行监听
2.基于微信dao层调用的保存进行监听
3.基于数据库的插入保存进行监听
这三层各有各的特点请自行选用。
/**
* UI加载微信消息 接收消息的监听，
*/
public static void uiMsgListener(XC_LoadPackage.LoadPackageParam lpparam) {
log("uiMsgListener 开始");
Object[] arrayOfObject = new Object[2];
arrayOfObject[0] = Cursor.class;
arrayOfObject[1] = new XC_MethodHook() {
protected void afterHookedMethod(MethodHookParam methodHookParam) throws XmlPullParserException, IOException {
//0代表别人发的消息，1代表是自己发的消息
int field_isSend = ((Integer) XposedHelpers.getObjectField(methodHookParam.thisObject, "field_isSend")).intValue();
//消息类型：1是文本...参考wechat_manager里的消息类型定义
int field_type = ((Integer) XposedHelpers.getObjectField(methodHookParam.thisObject, "field_type")).intValue();
//微信服务器端的消息id
Object field_msgSvrId = XposedHelpers.getObjectField(methodHookParam.thisObject, "field_msgSvrId");
//消息内容
String field_content = (String) XposedHelpers.getObjectField(methodHookParam.thisObject, "field_content");
String field_talker = (String) XposedHelpers.getObjectField(methodHookParam.thisObject, "field_talker");
//消息创建时间
long field_createTime = ((Long) XposedHelpers.getObjectField(methodHookParam.thisObject, "field_createTime")).longValue();
log("uiMsgListener field_isSend:" + field_isSend + "--field_type:" + field_type + "--field_msgSvrId--" + field_msgSvrId + "--field_talker--" + field_talker + "--field_content--" + field_content);
}
};
XposedHelpers.findAndHookMethod("com.tencent.mm.storage.bi", lpparam.classLoader, "d", arrayOfObject);
log("uiMsgListener 结束");
}
/**
*微信 dao层 插入消息监听
*/
/**
* 插入消息监听 处理微信 dao层
*/
public static void insertMsgDAOListener(XC_LoadPackage.LoadPackageParam lpparam) {
log("insertMsgDAOListener 开始");
Class<?> au = XposedHelpers.findClass("com.tencent.mm.storage.bi", lpparam.classLoader);
Object[] arrayOfObject = new Object[3];
arrayOfObject[0] = au;
arrayOfObject[1] = boolean.class;
arrayOfObject[2] = new XC_MethodHook() {
protected void afterHookedMethod(MethodHookParam paramAnonymousMethodHookParam) throws XmlPullParserException, IOException {
Object au = paramAnonymousMethodHookParam.args[0];
if (au == null) {
return;
}
int field_isSend = ((Integer) XposedHelpers.getObjectField(au, "field_isSend")).intValue();
int field_type = ((Integer) XposedHelpers.getObjectField(au, "field_type")).intValue();
Object field_msgSvrId = XposedHelpers.getObjectField(au, "field_msgSvrId");
String field_content = (String) XposedHelpers.getObjectField(au, "field_content");
String field_talker = (String) XposedHelpers.getObjectField(au, "field_talker");
log("insertMsgDAOListener field_isSend:" + field_isSend + "--field_type:" + field_type + "--field_msgSvrId--" + field_msgSvrId + "--field_talker--" + field_talker + "--field_content--" + field_content);
}
};
XposedHelpers.findAndHookMethod(XposedHelpers.findClass("com.tencent.mm.storage.bj", lpparam.classLoader), "b", arrayOfObject);
log("insertMsgDAOListener 结束");
}
/**
* database层数据的插入消息监听
*/
public static void insertMsgDBListener(XC_LoadPackage.LoadPackageParam lpparam) {
log("insertMsgDBListener 开始");
Object[] arrayOfObject = new Object[4];
arrayOfObject[0] = String.class;
arrayOfObject[1] = String.class;
arrayOfObject[2] = ContentValues.class;
arrayOfObject[3] = new XC_MethodHook() {
protected void afterHookedMethod(MethodHookParam paramAnonymousMethodHookParam) throws XmlPullParserException, IOException {
log("insertMsgDBListener 0"+paramAnonymousMethodHookParam.args[0]);
log("insertMsgDBListener 1"+paramAnonymousMethodHookParam.args[1]);
log("insertMsgDBListener 2"+paramAnonymousMethodHookParam.args[2]);
}
};
XposedHelpers.findAndHookMethod(XposedHelpers.findClass("com.tencent.wcdb.database.SQLiteDatabase", lpparam.classLoader), "insert", arrayOfObject);
log("insertMsgDBListener 结束");
}
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