/*
--------------------------------------------------------------------------------
gSOAP XML Web services tools
Copyright (C) 2001-2008, Robert van Engelen, Genivia, Inc. All Rights Reserved.
This software is released under one of the following two licenses:
GPL or Genivia's license for commercial use.
--------------------------------------------------------------------------------
GPL license.

This program is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free Software
Foundation; either version 2 of the License, or (at your option) any later
version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with
this program; if not, write to the Free Software Foundation, Inc., 59 Temple
Place, Suite 330, Boston, MA 02111-1307 USA

Author contact information:
engelen@genivia.com / engelen@acm.org
--------------------------------------------------------------------------------
A commercial use license is available from Genivia, Inc., contact@genivia.com
--------------------------------------------------------------------------------
*/

#include "stdsoap2.h"

#include <unistd.h> /* defines _POSIX_THREADS if pthreads are available */ 
#include <stdlib.h>

#ifdef _POSIX_THREADS 
# include <pthread.h> 
#endif 

#if defined(WIN32)
# define MUTEX_TYPE		HANDLE
# define MUTEX_SETUP(x)		(x) = CreateMutex(NULL, FALSE, NULL)
# define MUTEX_CLEANUP(x)	CloseHandle(x)
# define MUTEX_LOCK(x)		WaitForSingleObject((x), INFINITE)
# define MUTEX_UNLOCK(x)	ReleaseMutex(x)
# define THREAD_ID		GetCurrentThreadId()
#elif defined(_POSIX_THREADS)
# define MUTEX_TYPE		pthread_mutex_t
# define MUTEX_SETUP(x)		pthread_mutex_init(&(x), NULL)
# define MUTEX_CLEANUP(x)	pthread_mutex_destroy(&(x))
# define MUTEX_LOCK(x)		pthread_mutex_lock(&(x))
# define MUTEX_UNLOCK(x)	pthread_mutex_unlock(&(x))
# define THREAD_ID		pthread_self()
#else
# error "You must define mutex operations appropriate for your platform"
# error	"See OpenSSL /threads/th-lock.c on how to implement mutex on your platform"
#endif

struct CRYPTO_dynlock_value
{ MUTEX_TYPE mutex;
};

static MUTEX_TYPE *mutex_buf;

static struct CRYPTO_dynlock_value *dyn_create_function(const char *file, int line)
{ struct CRYPTO_dynlock_value *value;
  value = (struct CRYPTO_dynlock_value*)malloc(sizeof(struct CRYPTO_dynlock_value));
  if (value)
    MUTEX_SETUP(value->mutex);
  return value;
}

static void dyn_lock_function(int mode, struct CRYPTO_dynlock_value *l, const char *file, int line)
{ if (mode & CRYPTO_LOCK)
    MUTEX_LOCK(l->mutex);
  else
    MUTEX_UNLOCK(l->mutex);
}

static void dyn_destroy_function(struct CRYPTO_dynlock_value *l, const char *file, int line)
{ MUTEX_CLEANUP(l->mutex);
  free(l);
}

void locking_function(int mode, int n, const char *file, int line)
{ if (mode & CRYPTO_LOCK)
    MUTEX_LOCK(mutex_buf[n]);
  else
    MUTEX_UNLOCK(mutex_buf[n]);
}

unsigned long id_function()
{ return (unsigned long)THREAD_ID;
}

int CRYPTO_thread_setup()
{ int i;
  mutex_buf = (MUTEX_TYPE*)malloc(CRYPTO_num_locks() * sizeof(pthread_mutex_t));
  if (!mutex_buf)
    return SOAP_EOM;
  for (i = 0; i < CRYPTO_num_locks(); i++)
    MUTEX_SETUP(mutex_buf[i]);
  CRYPTO_set_id_callback(id_function);
  CRYPTO_set_locking_callback(locking_function);
  CRYPTO_set_dynlock_create_callback(dyn_create_function);
  CRYPTO_set_dynlock_lock_callback(dyn_lock_function);
  CRYPTO_set_dynlock_destroy_callback(dyn_destroy_function);
  return SOAP_OK;
}

void CRYPTO_thread_cleanup()
{ int i;
  if (!mutex_buf)
    return;
  CRYPTO_set_id_callback(NULL);
  CRYPTO_set_locking_callback(NULL);
  CRYPTO_set_dynlock_create_callback(NULL);
  CRYPTO_set_dynlock_lock_callback(NULL);
  CRYPTO_set_dynlock_destroy_callback(NULL);
  for (i = 0; i < CRYPTO_num_locks(); i++)
    MUTEX_CLEANUP(mutex_buf[i]);
  free(mutex_buf);
  mutex_buf = NULL;
}