#include <stdio.h> 
#include <unistd.h> 
#include <sys/types.h> 
#include <sys/ptrace.h> 
#include <mach/mach.h> 
#include <errno.h> 
#include <stdlib.h> 
#include <Security/Authorization.h>

int acquireTaskportRight() 
{
  OSStatus stat; 
  AuthorizationItem taskport_item[] = {{"system.privilege.taskport:"}}; 
  AuthorizationRights rights = {1, taskport_item}, *out_rights = NULL; 
  AuthorizationRef author; 
  int retval = 0;

  AuthorizationFlags auth_flags = kAuthorizationFlagExtendRights | kAuthorizationFlagPreAuthorize | kAuthorizationFlagInteractionAllowed | ( 1 << 5);

  stat = AuthorizationCreate (NULL, kAuthorizationEmptyEnvironment,auth_flags,&amp;amp;author);
  if (stat != errAuthorizationSuccess) 
    { 
      return 0;
    }

  stat = AuthorizationCopyRights ( author, &amp;amp;rights, kAuthorizationEmptyEnvironment, auth_flags,&amp;amp;out_rights);
  if (stat != errAuthorizationSuccess) 
    { 
      printf("fail");
      return 1;
    }
  return 0;
}

void check(int cond, char* msg) 
{ 
  if (!cond) 
    {
      printf("%s\n", msg); 
      exit(-1);
    }
} 

int main() 
{
  int infoPid; 
  kern_return_t kret; 
  mach_port_t task; 
  thread_act_port_array_t threadList; 
  mach_msg_type_number_t threadCount; 
  x86_thread_state32_t state;

  printf("Enter pid: \n"); 
  scanf("%d", &infoPid);
  if (acquireTaskportRight() != 0) 
    { 
      printf("acquireTaskportRight() failed!\n"); 
      exit(0);
    }
  
  kret = task_for_pid(mach_task_self(), infoPid, &task);
  if (kret!=KERN_SUCCESS) 
    { 
      printf("task_for_pid() failed with message %s!\n",mach_error_string(kret)); 
      exit(0);
    }

  kret = task_threads(task, &threadList, &threadCount); 
  if (kret!=KERN_SUCCESS) 
    { 
      printf("task_threads() failed with message %s!\n", mach_error_string(kret)); 
      exit(0);
    } 

  mach_msg_type_number_t stateCount = x86_THREAD_STATE32_COUNT; 
  kret = thread_get_state( threadList[0], x86_THREAD_STATE32, (thread_state_t)&state, &stateCount);
  if (kret!=KERN_SUCCESS) 
    { 
      printf("thread_get_state() failed with message %s!\n", mach_error_string(kret)); 
      exit(0);
    }
  
  printf("Thread %d has %d threads. Thread 0 state: \n", infoPid, threadCount); 
  printf("EIP: %lx\nEAX: %lx\nEBX: %lx\nECX: %lx\nEDX: %lx\nSS: %lx\n", state.__eip, state.__eax, state.__ebx, state.__ecx, state.__edx, state.__ss);
  return 0;
}