code: package com.lody.virtual.client.hook.proxies.libcore;
  
  import com.lody.virtual.client.NativeEngine;
  import com.lody.virtual.client.VClientImpl;
  import com.lody.virtual.client.core.VirtualCore;
  import com.lody.virtual.client.hook.base.MethodProxy;
  import com.lody.virtual.helper.utils.Reflect;
  
  import java.lang.reflect.Field;
  import java.lang.reflect.Method;
  
  import mirror.libcore.io.Os;
  
  /**
   * @author Lody
   */
  
  class MethodProxies {
  
      static class Lstat extends Stat {
  
          @Override
          public String getMethodName() {
              return "lstat";
          }
      }
  
      static class Getpwnam extends MethodProxy {
              @Override
              public String getMethodName() {
                  return "getpwnam";
              }
  
              @Override
              public Object afterCall(Object who, Method method, Object[] args, Object result) throws Throwable {
                  if (result != null) {
                      Reflect pwd = Reflect.on(result);
                      int uid = pwd.get("pw_uid");
                      if (uid == VirtualCore.get().myUid()) {
                          pwd.set("pw_uid", VClientImpl.get().getVUid());
                      }
                  }
                  return result;
              }
          }
  
      static class GetUid extends MethodProxy {
  
          @Override
          public String getMethodName() {
              return "getuid";
          }
  
          @Override
          public Object afterCall(Object who, Method method, Object[] args, Object result) throws Throwable {
              int uid = (int) result;
              return NativeEngine.onGetUid(uid);
          }
      }
  
      static class GetsockoptUcred extends MethodProxy {
              @Override
              public String getMethodName() {
                  return "getsockoptUcred";
              }
  
              @Override
              public Object afterCall(Object who, Method method, Object[] args, Object result) throws Throwable {
                  if (result != null) {
                      Reflect ucred = Reflect.on(result);
                      int uid = ucred.get("uid");
                      if (uid == VirtualCore.get().myUid()) {
                          ucred.set("uid", getBaseVUid());
                      }
                  }
                  return result;
              }
          }
  
      static class Stat extends MethodProxy {
  
          private static Field st_uid;
  
          static {
              try {
                  Method stat = Os.TYPE.getMethod("stat", String.class);
                  Class<?> StructStat = stat.getReturnType();
                  st_uid = StructStat.getDeclaredField("st_uid");
                  st_uid.setAccessible(true);
              } catch (Throwable e) {
                  throw new IllegalStateException(e);
              }
          }
  
          @Override
          public Object afterCall(Object who, Method method, Object[] args, Object result) throws Throwable {
              int uid = (int) st_uid.get(result);
              if (uid == VirtualCore.get().myUid()) {
                  st_uid.set(result, getBaseVUid());
              }
              return result;
          }
  
          @Override
          public String getMethodName() {
              return "stat";
          }
      }
  }
  