/***************************************************************************

 *                                  _   _ ____  _

 *  Project                     ___| | | |  _ \| |

 *                             / __| | | | |_) | |

 *                            | (__| |_| |  _ <| |___

 *                             \___|\___/|_| \_\_____|

 *

 * Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.

 *

 * This software is licensed as described in the file COPYING, which

 * you should have received as part of this distribution. The terms

 * are also available at https://curl.se/docs/copyright.html.

 *

 * You may opt to use, copy, modify, merge, publish, distribute and/or sell

 * copies of the Software, and permit persons to whom the Software is

 * furnished to do so, under the terms of the COPYING file.

 *

 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY

 * KIND, either express or implied.

 *

 * SPDX-License-Identifier: curl

 *

 ***************************************************************************/

#include "curl_setup.h"

#include "curlx/warnless.h"

#if defined(__INTEL_COMPILER) && defined(__unix__)

#ifdef HAVE_NETINET_IN_H

#include <netinet/in.h>

#endif

#ifdef HAVE_ARPA_INET_H

#include <arpa/inet.h>

#endif

#endif /* __INTEL_COMPILER && __unix__ */

#define CURL_MASK_UCHAR   ((unsigned char)~0)

#define CURL_MASK_USHORT  ((unsigned short)~0)

#define CURL_MASK_UINT    ((unsigned int)~0)

#define CURL_MASK_SINT    (CURL_MASK_UINT >> 1)

#define CURL_MASK_ULONG   ((unsigned long)~0)

#define CURL_MASK_USIZE_T ((size_t)~0)

#define CURL_MASK_SSIZE_T (CURL_MASK_USIZE_T >> 1)

#ifdef __INTEL_COMPILER

#pragma warning(push)

#pragma warning(disable:810) /* conversion may lose significant bits */

#endif

/*

 * unsigned long to unsigned char

 */

unsigned char curlx_ultouc(unsigned long ulnum)

{

  DEBUGASSERT(ulnum <= (unsigned long)CURL_MASK_UCHAR);

  return (unsigned char)(ulnum & (unsigned long)CURL_MASK_UCHAR);

}

/*

 * unsigned size_t to signed int

 */

int curlx_uztosi(size_t uznum)

{

  DEBUGASSERT(uznum <= (size_t)CURL_MASK_SINT);

  return (int)(uznum & (size_t)CURL_MASK_SINT);

}

/*

 * unsigned size_t to unsigned long

 */

unsigned long curlx_uztoul(size_t uznum)

{

#if ULONG_MAX < SIZE_MAX

  DEBUGASSERT(uznum <= (size_t)CURL_MASK_ULONG);

#endif

  return (unsigned long)(uznum & (size_t)CURL_MASK_ULONG);

}

/*

 * unsigned size_t to unsigned int

 */

unsigned int curlx_uztoui(size_t uznum)

{

#if UINT_MAX < SIZE_MAX

  DEBUGASSERT(uznum <= (size_t)CURL_MASK_UINT);

#endif

  return (unsigned int)(uznum & (size_t)CURL_MASK_UINT);

}

/*

 * signed long to signed int

 */

int curlx_sltosi(long slnum)

{

  DEBUGASSERT(slnum >= 0);

#if INT_MAX < LONG_MAX

  DEBUGASSERT((unsigned long)slnum <= (unsigned long)CURL_MASK_SINT);

#endif

  return (int)(slnum & (long)CURL_MASK_SINT);

}

/*

 * signed long to unsigned int

 */

unsigned int curlx_sltoui(long slnum)

{

  DEBUGASSERT(slnum >= 0);

#if UINT_MAX < LONG_MAX

  DEBUGASSERT((unsigned long)slnum <= (unsigned long)CURL_MASK_UINT);

#endif

  return (unsigned int)(slnum & (long)CURL_MASK_UINT);

}

/*

 * signed long to unsigned short

 */

unsigned short curlx_sltous(long slnum)

{

  DEBUGASSERT(slnum >= 0);

  DEBUGASSERT((unsigned long)slnum <= (unsigned long)CURL_MASK_USHORT);

  return (unsigned short)(slnum & (long)CURL_MASK_USHORT);

}

/*

 * unsigned size_t to signed ssize_t

 */

ssize_t curlx_uztosz(size_t uznum)

{

  DEBUGASSERT(uznum <= (size_t)CURL_MASK_SSIZE_T);

  return (ssize_t)(uznum & (size_t)CURL_MASK_SSIZE_T);

}

/*

 * signed curl_off_t to unsigned size_t

 */

size_t curlx_sotouz(curl_off_t sonum)

{

  DEBUGASSERT(sonum >= 0);

  return (size_t)(sonum & (curl_off_t)CURL_MASK_USIZE_T);

}

/*

 * signed ssize_t to signed int

 */

int curlx_sztosi(ssize_t sznum)

{

  DEBUGASSERT(sznum >= 0);

#if INT_MAX < SSIZE_MAX

  DEBUGASSERT((size_t)sznum <= (size_t)CURL_MASK_SINT);

#endif

  return (int)(sznum & (ssize_t)CURL_MASK_SINT);

}

/*

 * unsigned int to unsigned short

 */

unsigned short curlx_uitous(unsigned int uinum)

{

  DEBUGASSERT(uinum <= (unsigned int)CURL_MASK_USHORT);

  return (unsigned short)(uinum & (unsigned int)CURL_MASK_USHORT);

}

/*

 * signed int to unsigned size_t

 */

size_t curlx_sitouz(int sinum)

{

  DEBUGASSERT(sinum >= 0);

  return (size_t)sinum;

}

#ifdef __INTEL_COMPILER

#pragma warning(pop)

#endif

size_t curlx_uitouz(unsigned int uinum)

{

  return (size_t)uinum;

}

size_t curlx_sotouz_range(curl_off_t sonum, size_t uzmin, size_t uzmax)

{

  if(sonum < 0)

    return uzmin;

#if SIZEOF_CURL_OFF_T > SIZEOF_SIZE_T

  if(sonum > SIZE_MAX)

    return uzmax;

#endif

  return CURLMIN(CURLMAX((size_t)sonum, uzmin), uzmax);

}

bool curlx_sztouz(ssize_t sznum, size_t *puznum)

{

  if(sznum < 0) {

    *puznum = 0;

    return FALSE;

  }

  *puznum = (size_t)sznum;

  return TRUE;

}

bool curlx_sotouz_fits(curl_off_t sonum, size_t *puznum)

{

  if(sonum < 0) {

    *puznum = 0;

    return FALSE;

  }

#if SIZEOF_CURL_OFF_T > SIZEOF_SIZE_T

  if(sonum > SIZE_MAX) {

    *puznum = 0;

    return FALSE;

  }

#endif

  *puznum = (size_t)sonum;

  return TRUE;

}

bool curlx_sltouz(long slnum, size_t *puznum)

{

  if(slnum < 0) {

    *puznum = 0;

    return FALSE;

  }

  /* We error in curl_setup.h if SIZEOF_LONG > SIZEOF_SIZE_T */

  *puznum = (size_t)slnum;

  return TRUE;

}

curl_off_t curlx_uztoso(size_t uznum)

{

#if SIZEOF_SIZE_T >= SIZEOF_CURL_OFF_T

  if(uznum > (size_t)CURL_OFF_T_MAX)

    return CURL_OFF_T_MAX;

#endif

  return (curl_off_t)uznum;

}