Kate Mobile v109.1版本的 MD5 值为：fcd76ded5f363ecbfac46035a4ed2a23

以下内容为反编译后的 Auth.java 源代码，内容仅作参考

package com.perm.kate.api;

import android.util.Log;
import com.perm.utils.ErrorReporter;
import com.perm.utils.TokenHider;
import com.perm.utils.Utils;
import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
public abstract class Auth {
    public static String getSettings() {
        return "notify,friends,photos,audio,video,docs,status,notes,pages,wall,groups,messages,offline,notifications,stories";
    }

    public static String getUrl(String str, String str2) {
        try {
            return "https://oauth.vk.com/authorize?client_id=" + str + "&display=mobile&scope=" + str2 + "&redirect_uri=" + URLEncoder.encode("https://oauth.vk.com/blank.html", "utf-8") + "&response_type=token&v=" + URLEncoder.encode("5.139", "utf-8");
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
            ErrorReporter.report(e);
            return "";
        }
    }

    public static String parseGroupRedirectUrl(String str, long j) {
        String extractPattern = Utils.extractPattern(str, "access_token_" + j + "=(.*?)(&|$)");
        if (Api.is_dev) {
            Log.i("Kate.Auth", "access_token=" + extractPattern);
        }
        if (extractPattern == null || extractPattern.length() == 0) {
            throw new Exception("Failed to parse redirect url " + TokenHider.hideAccessToken(str));
        }
        return extractPattern;
    }

    public static String[] parseRedirectUrl(String str) {
        String extractPattern = Utils.extractPattern(str, "access_token=(.*?)&");
        if (Api.is_dev) {
            Log.i("Kate.Auth", "access_token=" + extractPattern);
        }
        String extractPattern2 = Utils.extractPattern(str, "user_id=(\\d*)");
        Log.i("Kate.Auth", "user_id=" + extractPattern2);
        if (extractPattern2 == null || extractPattern2.length() == 0 || extractPattern == null || extractPattern.length() == 0) {
            throw new Exception("Failed to parse redirect url " + TokenHider.hideAccessToken(str));
        }
        return new String[]{extractPattern, extractPattern2};
    }
}