#define _GNU_SOURCE
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <dlfcn.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <sys/select.h>
#include <string.h>
#include <termios.h>
#include <pthread.h>
#include <sys/epoll.h>

#include <jni.h>
#include <stdlib.h>
#include <android/log.h>
#include "../../base/hook.h"
#include "../../base/base.h"
#include "log.h"


void __attribute__ ((constructor)) my_init(void);

static struct hook_t eph;
static struct  hook_t name_eph;

static void my_log(char* msg){
  LOG("%s",msg);
}


void write_png_data_to_file(const char* data,size_t len){
       LOG("data file length:%d",len);
       char buffer[40] = {0};
       char buffer2[200] = {0};

       char* uuid_path = "/proc/sys/kernel/random/uuid";
       FILE* f_uuid = fopen(uuid_path,"r");
       if(f_uuid){
          fread(buffer,1,36,f_uuid);
          fclose(f_uuid);
          LOG("get uuid ok");
       }
       else{
         LOG("read uuid failed");
       }

       char* filename = "/mnt/sdcard/game_dump/%s.png";
       sprintf(buffer2,filename,buffer);

       LOG("filename:%s",buffer2);

       FILE* fd = fopen(buffer2,"wb");
       if(fd){
        int i =0;
           for(i;i<len;i+=2){
              fwrite(data + i,1,1,fd);
              fwrite(data + i + 1, 1,1,fd);
           }
           fclose(fd);
           fd = NULL;
       }
       else{
         LOG("write png data failed");
       }
}

unsigned long  hook_dete_format(void* this,const unsigned char * data, ssize_t dataLen){

   unsigned long (*origin_dete_format)(void* this,const unsigned char * data, ssize_t dataLen);

   origin_dete_format = (void*)eph.orig;

   hook_precall(&eph);

   LOG("hook deteformat  ==> start to write png data");

   write_png_data_to_file(data,dataLen);

   LOG("write ok");

   unsigned long r = origin_dete_format(this,data,dataLen);

   hook_postcall(&eph);

   return r;
}


void hook_init_with_image_file(int str){
   void (*origin)(int);

   LOG("%d",str);

   origin = (void*) name_eph.orig;

   hook_precall(&name_eph);

   LOG("hook init with file name");

   if(origin){
      origin(str);
      LOG("origin execute");
   }

   hook_postcall(&name_eph);

   LOG("origin hook_postcall");

}


void my_init(){

    LOG("===== hook start library load success ========");
    set_logfunction(my_log);

    hook(&eph,getpid(),"libcocos2dcpp","_ZN7cocos2d5Image12detectFormatEPKhl",
    hook_dete_format,
    hook_dete_format);

    hook(&name_eph,getpid(),"libcocos2dcpp","_ZN7cocos2d5Image17initWithImageFileERKSs",
    hook_init_with_image_file,
    hook_init_with_image_file);

   LOG(" ==== hook init end ===== ");
}