#ifndef HEADER_CURL_SETUP_H

#define HEADER_CURL_SETUP_H

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

 *                                  _   _ ____  _

 *  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

 *

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

#if defined(BUILDING_LIBCURL) && !defined(CURL_NO_OLDIES)

#define CURL_NO_OLDIES

#endif

/* Set default _WIN32_WINNT */

#ifdef __MINGW32__

#include <_mingw.h>

#endif

/* Workaround for Homebrew gcc 12.4.0, 13.3.0, 14.1.0, 14.2.0 (initial build)

   that started advertising the `availability` attribute, which then gets used

   by Apple SDK, but, in a way incompatible with gcc, resulting in misc errors

   inside SDK headers, e.g.:

     error: attributes should be specified before the declarator in a function

            definition

     error: expected ',' or '}' before

   Followed by missing declarations.

   Work it around by overriding the built-in feature-check macro used by the

   headers to enable the problematic attributes. This makes the feature check

   fail. Fixed in 14.2.0_1. Disable the workaround if the fix is detected. */

#if defined(__APPLE__) && !defined(__clang__) && defined(__GNUC__) && \

  defined(__has_attribute)

#  if !defined(__has_feature)  /* Keep this PP check separate from others */

#    define availability curl_pp_attribute_disabled

#  elif !__has_feature(attribute_availability)

#    define availability curl_pp_attribute_disabled

#  endif

#endif

#ifdef __APPLE__

#include <sys/types.h>

#include <TargetConditionals.h>

/* Fixup faulty target macro initialization in macOS SDK since v14.4 (as of

   15.0 beta). The SDK target detection in `TargetConditionals.h` correctly

   detects macOS, but fails to set the macro's old name `TARGET_OS_OSX`, then

   continues to set it to a default value of 0. Other parts of the SDK still

   rely on the old name, and with this inconsistency our builds fail due to

   missing declarations. It happens when using mainline llvm older than v18.

   Later versions fixed it by predefining these target macros, avoiding the

   faulty dynamic detection. gcc is not affected (for now) because it lacks

   the necessary dynamic detection features, so the SDK falls back to

   a codepath that sets both the old and new macro to 1. */

#if defined(TARGET_OS_MAC) && TARGET_OS_MAC && \

  defined(TARGET_OS_OSX) && !TARGET_OS_OSX && \

  (!defined(TARGET_OS_IPHONE) || !TARGET_OS_IPHONE) && \

  (!defined(TARGET_OS_SIMULATOR) || !TARGET_OS_SIMULATOR)

#undef TARGET_OS_OSX

#define TARGET_OS_OSX TARGET_OS_MAC

#endif

#endif

#if defined(__MINGW32__) && \

  (!defined(__MINGW64_VERSION_MAJOR) || (__MINGW64_VERSION_MAJOR < 3))

#error "mingw-w64 3.0 or greater required"

#endif

/* Visual Studio 2010 is the minimum Visual Studio version we support.

   Workarounds for older versions of Visual Studio have been removed. */

#if defined(_MSC_VER) && (_MSC_VER < 1600)

#error "Ancient versions of Visual Studio are no longer supported due to bugs."

#endif

#ifdef _MSC_VER

/* Disable Visual Studio warnings: 4127 "conditional expression is constant" */

#pragma warning(disable:4127)

#ifndef _CRT_SECURE_NO_WARNINGS

#define _CRT_SECURE_NO_WARNINGS  /* for getenv(), sscanf(), vsnprintf() */

#endif

#endif /* _MSC_VER */

#ifdef _WIN32

/*

 * Do not include unneeded stuff in Windows headers to avoid compiler

 * warnings and macro clashes.

 * Make sure to define this macro before including any Windows headers.

 */

#  ifndef WIN32_LEAN_AND_MEAN

#  define WIN32_LEAN_AND_MEAN

#  endif

#  ifndef NOGDI

#  define NOGDI

#  endif

/* Detect Windows App environment which has a restricted access

 * to the Win32 APIs. */

#  if (defined(_WIN32_WINNT) && (_WIN32_WINNT >= 0x0602)) || \

     defined(WINAPI_FAMILY)

#    include <winapifamily.h>

#    if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_APP) &&  \

       !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)

#      define CURL_WINDOWS_UWP

#    endif

#  endif

/* Mandatory to define SECURITY_WIN32 or SECURITY_KERNEL to indicating who is

   compiling the code. */

#undef SECURITY_KERNEL

#undef SECURITY_WIN32

#define SECURITY_WIN32  /* for <sspi.h> */

#endif

/* Compatibility */

#ifdef ENABLE_IPV6

#define USE_IPV6 1

#endif

/*

 * Include configuration script results or hand-crafted

 * configuration file for platforms which lack config tool.

 */

#ifdef HAVE_CONFIG_H

#include "curl_config.h"

#else /* HAVE_CONFIG_H */

#ifdef _WIN32

#  include "config-win32.h"

#endif

#ifdef macintosh

#  include "config-mac.h"

#endif

#ifdef __OS400__

#  include "config-os400.h"

#endif

#endif /* HAVE_CONFIG_H */

#ifdef _WIN32

#  if defined(_WIN32_WINNT) && (_WIN32_WINNT < 0x0600)

#    error The minimum build target is Windows Vista (0x0600)

#  endif

#  if !defined(CURL_WINDOWS_UWP) && (defined(_MSC_VER) || defined(__MINGW32__))

#    ifndef HAVE_IF_NAMETOINDEX

#    define HAVE_IF_NAMETOINDEX

#    endif

#  endif

#endif

/* ================================================================ */

/* Definition of preprocessor macros/symbols which modify compiler  */

/* behavior or generated code characteristics must be done here,    */

/* as appropriate, before any system header file is included. It is */

/* also possible to have them defined in the config file included   */

/* before this point. As a result of all this we frown inclusion of */

/* system header files in our config files, avoid this at any cost. */

/* ================================================================ */

#ifdef HAVE_LIBZ

#  ifndef ZLIB_CONST

#  define ZLIB_CONST  /* Use z_const. Supported by v1.2.5.2 or greater. */

#  endif

#endif

/*

 * AIX 4.3 and newer needs _THREAD_SAFE defined to build

 * proper reentrant code. Others may also need it.

 */

#ifdef NEED_THREAD_SAFE

#  ifndef _THREAD_SAFE

#  define _THREAD_SAFE

#  endif

#endif

/*

 * Tru64 needs _REENTRANT set for a few function prototypes and

 * things to appear in the system header files. Unixware needs it

 * to build proper reentrant code. Others may also need it.

 */

#ifdef NEED_REENTRANT

#  ifndef _REENTRANT

#  define _REENTRANT

#  endif

#endif

/* Solaris needs this to get a POSIX-conformant getpwuid_r */

#if defined(sun) || defined(__sun)

#  ifndef _POSIX_PTHREAD_SEMANTICS

#  define _POSIX_PTHREAD_SEMANTICS 1

#  endif

#endif

/* ================================================================ */

/*  If you need to include a system header file for your platform,  */

/*  please, do it beyond the point further indicated in this file.  */

/* ================================================================ */

/* Give calloc a chance to be included early, so we do not redefine */

#ifdef HAVE_THREADS_POSIX

#  include <pthread.h>

#endif

/*

 * Disable other protocols when http is the only one desired.

 */

#ifdef HTTP_ONLY

#  ifndef CURL_DISABLE_DICT

#  define CURL_DISABLE_DICT

#  endif

#  ifndef CURL_DISABLE_FILE

#  define CURL_DISABLE_FILE

#  endif

#  ifndef CURL_DISABLE_FTP

#  define CURL_DISABLE_FTP

#  endif

#  ifndef CURL_DISABLE_GOPHER

#  define CURL_DISABLE_GOPHER

#  endif

#  ifndef CURL_DISABLE_IMAP

#  define CURL_DISABLE_IMAP

#  endif

#  ifndef CURL_DISABLE_LDAP

#  define CURL_DISABLE_LDAP

#  endif

#  ifndef CURL_DISABLE_LDAPS

#  define CURL_DISABLE_LDAPS

#  endif

#  ifndef CURL_DISABLE_MQTT

#  define CURL_DISABLE_MQTT

#  endif

#  ifndef CURL_DISABLE_POP3

#  define CURL_DISABLE_POP3

#  endif

#  ifndef CURL_DISABLE_RTSP

#  define CURL_DISABLE_RTSP

#  endif

#  ifndef CURL_DISABLE_SMTP

#  define CURL_DISABLE_SMTP

#  endif

#  ifndef CURL_DISABLE_TELNET

#  define CURL_DISABLE_TELNET

#  endif

#  ifndef CURL_DISABLE_TFTP

#  define CURL_DISABLE_TFTP

#  endif

#  ifndef CURL_DISABLE_WEBSOCKETS

#  define CURL_DISABLE_WEBSOCKETS

#  endif

#endif

/*

 * When HTTP is disabled, disable HTTP-only features

 */

#ifdef CURL_DISABLE_HTTP

#  ifndef CURL_DISABLE_ALTSVC

#  define CURL_DISABLE_ALTSVC

#  endif

#  ifndef CURL_DISABLE_AWS

#  define CURL_DISABLE_AWS

#  endif

#  ifndef CURL_DISABLE_BASIC_AUTH

#  define CURL_DISABLE_BASIC_AUTH

#  endif

#  ifndef CURL_DISABLE_BEARER_AUTH

#  define CURL_DISABLE_BEARER_AUTH

#  endif

#  ifndef CURL_DISABLE_COOKIES

#  define CURL_DISABLE_COOKIES

#  endif

#  ifndef CURL_DISABLE_DOH

#  define CURL_DISABLE_DOH

#  endif

#  ifndef CURL_DISABLE_FORM_API

#  define CURL_DISABLE_FORM_API

#  endif

#  ifndef CURL_DISABLE_HEADERS_API

#  define CURL_DISABLE_HEADERS_API

#  endif

#  ifndef CURL_DISABLE_HSTS

#  define CURL_DISABLE_HSTS

#  endif

#  ifndef CURL_DISABLE_HTTPSIG

#  define CURL_DISABLE_HTTPSIG

#  endif

#  ifndef CURL_DISABLE_HTTP_AUTH

#  define CURL_DISABLE_HTTP_AUTH

#  endif

#  ifndef CURL_DISABLE_RTSP

#  define CURL_DISABLE_RTSP

#  endif

#  ifndef CURL_DISABLE_WEBSOCKETS

#  define CURL_DISABLE_WEBSOCKETS /* no WebSockets without HTTP present */

#  endif

#endif

/* ================================================================ */

/* No system header file shall be included in this file before this */

/* point.                                                           */

/* ================================================================ */

/*

 * OS/400 setup file includes some system headers.

 */

#ifdef __OS400__

#  include "setup-os400.h"

#endif

/*

 * VMS setup file includes some system headers.

 */

#ifdef __VMS

#  include "setup-vms.h"

#endif

/*

 * Windows setup file includes some system headers.

 */

#ifdef _WIN32

#  include "setup-win32.h"

#endif

#include <curl/system.h>

/* Helper macro to expand and concatenate two macros.

 * Direct macros concatenation does not work because macros

 * are not expanded before direct concatenation.

 */

#define CURL_CONC_MACROS_(A, B) A ## B

#define CURL_CONC_MACROS(A, B) CURL_CONC_MACROS_(A, B)

/* curl uses its own printf() function internally. It understands the GNU

 * format. Use this format, so that it matches the GNU format attribute we

 * use with the MinGW compiler, allowing it to verify them at compile-time.

 */

#ifdef __MINGW32__

#  undef CURL_FORMAT_CURL_OFF_T

#  undef CURL_FORMAT_CURL_OFF_TU

#  define CURL_FORMAT_CURL_OFF_T   "lld"

#  define CURL_FORMAT_CURL_OFF_TU  "llu"

#endif

/* based on logic in "curl/mprintf.h" */

#if (defined(__GNUC__) || defined(__clang__) ||                 \

     defined(__IAR_SYSTEMS_ICC__)) &&                           \

  defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) && \

  !defined(CURL_NO_FMT_CHECKS)

#if defined(__MINGW32__) && !defined(__clang__)

#define CURL_PRINTF(fmt, arg) __attribute__((format(gnu_printf, fmt, arg)))

#else

#define CURL_PRINTF(fmt, arg) __attribute__((format(__printf__, fmt, arg)))

#endif

#else

#define CURL_PRINTF(fmt, arg)

#endif

/* Override default printf mask check rules in "curl/mprintf.h" */

#define CURL_TEMP_PRINTF CURL_PRINTF

/* Workaround for mainline llvm v16 and earlier missing a built-in macro

   expected by macOS SDK v14 / Xcode v15 (2023) and newer.

   gcc (as of v14) is also missing it. */

#if defined(__APPLE__) &&                                   \

  ((!defined(__apple_build_version__) &&                    \

    defined(__clang__) && __clang_major__ < 17) ||          \

   (defined(__GNUC__) && __GNUC__ <= 14)) &&                \

  defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && \

  !defined(__ENVIRONMENT_OS_VERSION_MIN_REQUIRED__)

#define __ENVIRONMENT_OS_VERSION_MIN_REQUIRED__ \

  __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__

#endif

/*

 * Use getaddrinfo to resolve the IPv4 address literal. If the current network

 * interface does not support IPv4, but supports IPv6, NAT64, and DNS64,

 * performing this task will result in a synthesized IPv6 address.

 */

#if defined(__APPLE__) && !defined(USE_ARES)

#  define USE_RESOLVE_ON_IPS 1

#  if TARGET_OS_MAC && !(defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE) && \

     defined(USE_IPV6)

#    define CURL_MACOS_CALL_COPYPROXIES 1

#  endif

#endif

#ifdef USE_ARES

#  ifndef CARES_NO_DEPRECATED

#  define CARES_NO_DEPRECATED  /* for ares_getsock() */

#  endif

#  if defined(CURL_STATICLIB) && !defined(CARES_STATICLIB) && defined(_WIN32)

#    define CARES_STATICLIB  /* define it before including ares.h */

#  endif

#endif

#ifdef USE_LWIPSOCK

#  include <lwip/init.h>

#  include <lwip/sockets.h>

#  include <lwip/netdb.h>

#endif

#ifdef macintosh

#  include <extra/stricmp.h>

#  include <extra/strdup.h>

#endif

#ifdef __AMIGA__

#  ifdef __amigaos4__

#    define __USE_INLINE__

     /* use our own resolver which uses runtime feature detection */

#    define CURLRES_AMIGA

     /* getaddrinfo() currently crashes bsdsocket.library, so disable */

#    undef HAVE_GETADDRINFO

#    if !(defined(__NEWLIB__) || \

          (defined(__CLIB2__) && defined(__THREAD_SAFE)))

       /* disable threaded resolver with clib2 - requires newlib or clib-ts */

#      undef USE_RESOLV_THREADED

#    endif

#  endif

#  include <exec/types.h>

#  include <exec/execbase.h>

#  include <proto/exec.h>

#  include <proto/dos.h>

#  include <unistd.h>

#  if defined(HAVE_PROTO_BSDSOCKET_H) && \

    (!defined(__amigaos4__) || defined(USE_AMISSL))

     /* use bsdsocket.library directly, instead of libc networking functions */

#    define _SYS_MBUF_H /* m_len define clashes with curl */

#    include <proto/bsdsocket.h>

#    ifdef __amigaos4__

       int Curl_amiga_select(int nfds, fd_set *readfds, fd_set *writefds,

                             fd_set *errorfds, struct timeval *timeout);

#      define select(a, b, c, d, e) Curl_amiga_select(a, b, c, d, e)

#    else

#      define select(a, b, c, d, e) WaitSelect(a, b, c, d, e, 0)

#    endif

     /* must not use libc's fcntl() on bsdsocket.library sockfds! */

#    undef HAVE_FCNTL

#    undef HAVE_FCNTL_O_NONBLOCK

#  else

     /* use libc networking and hence close() and fcntl() */

#    undef HAVE_CLOSESOCKET_CAMEL

#    undef HAVE_IOCTLSOCKET_CAMEL

#  endif

/*

 * In clib2 arpa/inet.h warns that some prototypes may clash

 * with bsdsocket.library. This avoids the definition of those.

 */

#  define __NO_NET_API

#endif

/* Whether to use eventfd() */

#if defined(HAVE_EVENTFD) && defined(HAVE_SYS_EVENTFD_H)

#define USE_EVENTFD

#endif

#ifdef SO_NOSIGPIPE

#define USE_SO_NOSIGPIPE

#endif

#include <stdio.h>

#include <assert.h>

#ifdef __TANDEM /* for ns*-tandem-nsk systems */

#  ifndef __LP64

#    include <floss.h> /* FLOSS is only used for 32-bit builds. */

#  endif

#endif

#include <stdint.h>

#define HAVE_UINTPTR_T  /* assume uintptr_t is provided by stdint.h */

#ifdef __DJGPP__

/* By default, DJGPP provides this type as a version of 'unsigned long' which

   forces us to use a define use it in printf() format strings without

   warnings. long and int are both 32 bits for this platform. */

#define uint32_t unsigned int

#endif

/* Disable uintptr_t for targets known to miss it from stdint.h */

#ifdef __OS400__

#undef HAVE_UINTPTR_T

#endif

#include <limits.h>

/* Include after setting system macros that may affect type sizes

   (e.g. 'off_t' or 'time_t'), or suppress warnings

   (e.g. '_CRT_SECURE_NO_WARNINGS`), but before including sys/stat.h */

#include <sys/types.h>

#ifdef _WIN32

#  ifdef HAVE_IO_H

#  include <io.h>

#  endif

#  include <sys/stat.h>

   /* Large file (>2Gb) support using Win32 functions. */

#  define curl_lseek                      _lseeki64

#  define LSEEK_ERROR                     ((__int64)-1)

#elif defined(__DJGPP__)

   /* Requires DJGPP 2.04 */

#  include <unistd.h>

#  define curl_lseek                      llseek

#  define LSEEK_ERROR                     ((offset_t)-1)

#elif defined(__AMIGA__)

#  define curl_lseek(fd, offset, whence)  lseek(fd, (off_t)(offset), whence)

#  define LSEEK_ERROR                     ((off_t)-1)

#else

#  define curl_lseek                      lseek

#  define LSEEK_ERROR                     ((off_t)-1)

#endif

#ifndef SIZEOF_TIME_T

/* assume default size of time_t to be 32 bits */

#define SIZEOF_TIME_T 4

#endif

#ifndef SIZEOF_CURL_SOCKET_T

/* configure and cmake check and set the define */

#  if defined(USE_WINSOCK) && defined(_WIN64)

#    define SIZEOF_CURL_SOCKET_T 8

#  else

/* default guess */

#    define SIZEOF_CURL_SOCKET_T 4

#  endif

#endif

#if SIZEOF_CURL_SOCKET_T < 8

#ifdef USE_WINSOCK

#  define FMT_SOCKET_T "u"

#else

#  define FMT_SOCKET_T "d"

#endif

#elif defined(USE_WINSOCK)

#  define FMT_SOCKET_T "zu"

#else

#  define FMT_SOCKET_T "qd"

#endif

/*

 * Default sizeof(off_t) in case it has not been defined in config file.

 */

#ifndef SIZEOF_OFF_T

#  if defined(__VMS) && !defined(__VAX)

#    ifdef _LARGEFILE

#      define SIZEOF_OFF_T 8

#    endif

#  elif defined(__OS400__) && defined(__ILEC400__)

#    ifdef _LARGE_FILES

#      define SIZEOF_OFF_T 8

#    endif

#  elif defined(__MVS__) && defined(__IBMC__)

#    if defined(_LP64) || defined(_LARGE_FILES)

#      define SIZEOF_OFF_T 8

#    endif

#  elif defined(__370__) && defined(__IBMC__)

#    if defined(_LP64) || defined(_LARGE_FILES)

#      define SIZEOF_OFF_T 8

#    endif

#  endif

#  ifndef SIZEOF_OFF_T

#  define SIZEOF_OFF_T 4

#  endif

#endif

#if SIZEOF_CURL_OFF_T < 8

#error "too small curl_off_t"

#else

   /* assume SIZEOF_CURL_OFF_T == 8 */

#  define CURL_OFF_T_MAX 0x7FFFFFFFFFFFFFFF

#endif

#define CURL_OFF_T_MIN (-CURL_OFF_T_MAX - 1)

#define FMT_OFF_T  CURL_FORMAT_CURL_OFF_T

#define FMT_OFF_TU CURL_FORMAT_CURL_OFF_TU

#if SIZEOF_TIME_T == 4

#  ifdef HAVE_TIME_T_UNSIGNED

#  define TIME_T_MAX UINT_MAX

#  define TIME_T_MIN 0

#  else

#  define TIME_T_MAX INT_MAX

#  define TIME_T_MIN INT_MIN

#  endif

#else

#  ifdef HAVE_TIME_T_UNSIGNED

#  define TIME_T_MAX 0xFFFFFFFFFFFFFFFF

#  define TIME_T_MIN 0

#  else

#  define TIME_T_MAX 0x7FFFFFFFFFFFFFFF

#  define TIME_T_MIN (-TIME_T_MAX - 1)

#  endif

#endif

#ifndef SIZE_MAX

/* some limits.h headers have this defined, some do not */

#if defined(SIZEOF_SIZE_T) && (SIZEOF_SIZE_T > 4)

#define SIZE_MAX 18446744073709551615U

#else

#define SIZE_MAX 4294967295U

#endif

#endif

#ifndef SSIZE_MAX

/* some limits.h headers have this defined, some do not */

#if defined(SIZEOF_SIZE_T) && (SIZEOF_SIZE_T > 4)

#define SSIZE_MAX 9223372036854775807

#else

#define SSIZE_MAX 2147483647

#endif

#endif

#if SIZEOF_LONG > SIZEOF_SIZE_T

#error "unexpected: 'long' is larger than 'size_t'"

#endif

/*

 * Arg 2 type for gethostname in case it has not been defined in config file.

 */

#ifndef GETHOSTNAME_TYPE_ARG2

#  ifdef USE_WINSOCK

#    define GETHOSTNAME_TYPE_ARG2 int

#  else

#    define GETHOSTNAME_TYPE_ARG2 size_t

#  endif

#endif

/* Below we define some functions. They should

   4. set the SIGALRM signal timeout

   5. set dir/file naming defines

 */

#ifdef _WIN32

#  define DIR_CHAR      "\\"

#else /* _WIN32 */

#  ifdef MSDOS  /* Watt-32 */

#    include <sys/ioctl.h>

#    define select(n, r, w, x, t)  select_s(n, r, w, x, t)

#    define ioctl(x, y, z)         ioctlsocket(x, y, (char *)(z))

#    include <tcp.h>

#    undef word

#    undef byte

#  endif /* MSDOS */

#  ifdef __minix

     /* Minix 3 versions up to at least 3.1.3 are missing these prototypes */

     extern struct tm *gmtime_r(const time_t * const timep, struct tm *tmp);

#  endif

#  define DIR_CHAR      "/"

#endif /* _WIN32 */

/* We want to use mutex when available. */

#if defined(HAVE_THREADS_POSIX) || defined(_WIN32)

#define USE_MUTEX

#endif

/* threaded resolver is the only feature requiring threads. */

#ifdef USE_RESOLV_THREADED

#define USE_THREADS

#endif

/* ---------------------------------------------------------------- */

/*             resolver specialty compile-time defines              */

/*         CURLRES_* defines to use in the host*.c sources          */

/* ---------------------------------------------------------------- */

/*

 * Mutually exclusive CURLRES_* definitions.

 */

#if defined(USE_IPV6) && defined(HAVE_GETADDRINFO)

#  define CURLRES_IPV6

#elif defined(USE_IPV6) && (defined(_WIN32) || defined(__CYGWIN__))

/* assume on Windows that IPv6 without getaddrinfo is a broken build */

#  error "Unexpected build: IPv6 is enabled but getaddrinfo was not found."

#else

#  define CURLRES_IPV4

#endif

#ifdef USE_RESOLV_THREADED

#  define CURLRES_ASYNCH

#elif defined(USE_RESOLV_ARES)

#  define CURLRES_ASYNCH

/* now undef the stock libc functions to avoid them being used */

#  undef HAVE_GETADDRINFO

#  undef HAVE_FREEADDRINFO

#else

#  define CURLRES_SYNCH

#endif

/* ---------------------------------------------------------------- */

#if defined(HAVE_LIBIDN2) && defined(HAVE_IDN2_H) && \

  !defined(USE_WIN32_IDN) && !defined(USE_APPLE_IDN)

/* The lib and header are present */

#define USE_LIBIDN2

#endif

#if defined(USE_LIBIDN2) && (defined(USE_WIN32_IDN) || defined(USE_APPLE_IDN))

#error "libidn2 cannot be enabled with WinIDN or AppleIDN, choose one."

#endif

#if defined(USE_GNUTLS) || defined(USE_OPENSSL) || defined(USE_MBEDTLS) || \

  defined(USE_WOLFSSL) || defined(USE_SCHANNEL) || defined(USE_RUSTLS)

#define USE_SSL    /* SSL support has been enabled */

#endif

#if defined(USE_OPENSSL) && defined(USE_WOLFSSL)

#ifndef OPENSSL_COEXIST

#define OPENSSL_COEXIST

#endif

#endif

#if defined(USE_WOLFSSL) && defined(USE_GNUTLS)

/* Avoid defining unprefixed wolfSSL SHA macros colliding with nettle ones */

#define NO_OLD_WC_NAMES

#endif

/* Single point where USE_SPNEGO definition might be defined */

#if !defined(CURL_DISABLE_NEGOTIATE_AUTH) &&          \

  (defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI))

#define USE_SPNEGO

#endif

/* Single point where USE_KERBEROS5 definition might be defined */

#if !defined(CURL_DISABLE_KERBEROS_AUTH) &&           \

  (defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI))

#define USE_KERBEROS5

#endif

/* Single point where USE_NTLM definition might be defined */

#ifdef CURL_ENABLE_NTLM

#  if (defined(USE_OPENSSL) && defined(HAVE_DES_ECB_ENCRYPT)) ||   \

  defined(USE_GNUTLS) ||                                           \

  (defined(USE_MBEDTLS) && defined(HAVE_MBEDTLS_DES_CRYPT_ECB)) || \

  defined(USE_OS400CRYPTO) || defined(USE_WIN32_CRYPTO) ||         \

  (defined(USE_WOLFSSL) && defined(HAVE_WC_DES_ECBENCRYPT))

#    define USE_CURL_NTLM_CORE

#  endif

#  if defined(USE_CURL_NTLM_CORE) || defined(USE_WINDOWS_SSPI)

#    define USE_NTLM

#  endif

#endif

#if defined(USE_LIBSSH2) || defined(USE_LIBSSH)

#define USE_SSH

#endif

/* GCC <4.6 does not support '#pragma GCC diagnostic push' and does not support

   'pragma GCC diagnostic' inside functions.

   Use CURL_HAVE_DIAG to guard the above in the curl codebase, instead of

   defined(__GNUC__) || defined(__clang__).

 */

#if defined(__clang__) || (defined(__GNUC__) && \

  ((__GNUC__ > 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ >= 6))))

#define CURL_HAVE_DIAG

#endif

/*

 * Provide a mechanism to silence picky compilers, such as gcc 4.6+.

 * Parameters should of course normally not be unused, but for example when

 * we have multiple implementations of the same interface it may happen.

 */

#if defined(__GNUC__) && ((__GNUC__ >= 3) || \

  ((__GNUC__ == 2) && defined(__GNUC_MINOR__) && (__GNUC_MINOR__ >= 7)))

#  define WARN_UNUSED_RESULT __attribute__((warn_unused_result))

#elif defined(__IAR_SYSTEMS_ICC__) && (__VER__ >= 9040001)

#  define WARN_UNUSED_RESULT __attribute__((warn_unused_result))

#else

#  define WARN_UNUSED_RESULT

#endif

/* noreturn attribute */

#ifndef CURL_NORETURN

#if (defined(__GNUC__) && (__GNUC__ >= 3)) || defined(__clang__) || \

  defined(__IAR_SYSTEMS_ICC__)

#  define CURL_NORETURN  __attribute__((__noreturn__))

#elif defined(_MSC_VER)

#  define CURL_NORETURN  __declspec(noreturn)

#else

#  define CURL_NORETURN

#endif

#endif

/* fallthrough attribute */

#ifndef FALLTHROUGH

#if (defined(__GNUC__) && __GNUC__ >= 7) ||     \

  (defined(__clang__) && __clang_major__ >= 10)

#  define FALLTHROUGH()  __attribute__((fallthrough))

#else

#  define FALLTHROUGH()  do {} while(0)

#endif

#endif

/*

 * Inclusion of common header files.

 */

#include <stdlib.h>

#include <string.h>

#include <stdarg.h>

#include <time.h>

#include <errno.h>

#include <sys/stat.h>

#if !defined(_WIN32) || defined(__MINGW32__)

#include <sys/time.h>

#endif

#ifdef HAVE_IO_H

#include <io.h>

#endif

#ifdef HAVE_FCNTL_H

#include <fcntl.h>

#endif

#if defined(HAVE_STDBOOL_H) && defined(HAVE_BOOL_T)

#include <stdbool.h>

#endif

#ifdef HAVE_UNISTD_H

#include <unistd.h>

#endif

/* Macro to strip 'const' without triggering a compiler warning.

   Use it for APIs that do not or cannot support the const qualifier. */

#ifdef HAVE_UINTPTR_T

#define CURL_UNCONST(p) ((void *)(uintptr_t)(const void *)(p))

#else

#define CURL_UNCONST(p) ((void *)(p))  /* Fall back to simple cast */

#endif

#ifdef USE_SCHANNEL

/* Must set this before <schannel.h> is included directly or indirectly by

   another Windows header. */

#  define SCHANNEL_USE_BLACKLISTS  /* for SCH_CREDENTIALS */

#  include <subauth.h>  /* for [P]UNICODE_STRING in SCH_CREDENTIALS */

#endif

#ifdef __hpux

#  if !defined(_XOPEN_SOURCE_EXTENDED) || defined(_KERNEL)

#    ifdef _APP32_64BIT_OFF_T

#      define OLD_APP32_64BIT_OFF_T _APP32_64BIT_OFF_T

#      undef _APP32_64BIT_OFF_T

#    else

#      undef OLD_APP32_64BIT_OFF_T

#    endif

#  endif

#endif

#ifndef _WIN32

#include <sys/socket.h>  /* also for MSG_NOSIGNAL */

#endif

#include "functypes.h"

#ifdef __hpux

#  if !defined(_XOPEN_SOURCE_EXTENDED) || defined(_KERNEL)

#    ifdef OLD_APP32_64BIT_OFF_T

#      define _APP32_64BIT_OFF_T OLD_APP32_64BIT_OFF_T

#      undef OLD_APP32_64BIT_OFF_T

#    endif

#  endif

#endif

/*

 * Definition of timeval struct for platforms that do not have it.

 */

#ifndef HAVE_STRUCT_TIMEVAL

struct timeval {

  long tv_sec;

  long tv_usec;

};

#endif

/*

 * If we have the MSG_NOSIGNAL define, make sure we use

 * it as the fourth argument of function send()

 */

#ifdef MSG_NOSIGNAL

#define SEND_4TH_ARG MSG_NOSIGNAL

#else

#define SEND_4TH_ARG 0

#endif

#ifdef __minix

/* Minix does not support recv on TCP sockets */

#define sread(x, y, z) (ssize_t)read((RECV_TYPE_ARG1)(x), \

                                     (RECV_TYPE_ARG2)(y), \

                                     (RECV_TYPE_ARG3)(z))

#elif defined(HAVE_RECV)

/*

 * The definitions for the return type and arguments types

 * of functions recv() and send() belong and come from the

 * configuration file. Do not define them in any other place.

 *

 * HAVE_RECV is defined if you have a function named recv()

 * which is used to read incoming data from sockets. If your

 * function has another name then do not define HAVE_RECV.

 *

 * If HAVE_RECV is defined then RECV_TYPE_ARG1, RECV_TYPE_ARG2,

 * RECV_TYPE_ARG3, RECV_TYPE_ARG4 and RECV_TYPE_RETV must also

 * be defined.

 *

 * HAVE_SEND is defined if you have a function named send()

 * which is used to write outgoing data on a connected socket.

 * If yours has another name then do not define HAVE_SEND.

 *

 * If HAVE_SEND is defined then SEND_TYPE_ARG1, SEND_TYPE_ARG2,

 * SEND_TYPE_ARG3, SEND_TYPE_ARG4 and SEND_TYPE_RETV must also

 * be defined. SEND_NONCONST_ARG2 must also be defined if ARG2

 * does not accept const.

 */

#define sread(x, y, z) (ssize_t)recv((RECV_TYPE_ARG1)(x), \

                                     (RECV_TYPE_ARG2)(y), \

                                     (RECV_TYPE_ARG3)(z), \

                                     (RECV_TYPE_ARG4)(0))

#else /* HAVE_RECV */

#ifndef sread

#error "Missing definition of macro sread"

#endif

#endif /* HAVE_RECV */

#ifdef __minix

/* Minix does not support send on TCP sockets */

#define swrite(x, y, z) (ssize_t)write((SEND_TYPE_ARG1)(x), \

                                       (SEND_TYPE_ARG2)CURL_UNCONST(y), \

                                       (SEND_TYPE_ARG3)(z))

#elif defined(HAVE_SEND)

#ifdef SEND_NONCONST_ARG2

#define swrite(x, y, z) (ssize_t)send((SEND_TYPE_ARG1)(x), \

                                      (SEND_TYPE_ARG2)CURL_UNCONST(y), \

                                      (SEND_TYPE_ARG3)(z), \

                                      (SEND_TYPE_ARG4)(SEND_4TH_ARG))

#else

#define swrite(x, y, z) (ssize_t)send((SEND_TYPE_ARG1)(x), \

                                      (const SEND_TYPE_ARG2)(y), \

                                      (SEND_TYPE_ARG3)(z), \

                                      (SEND_TYPE_ARG4)(SEND_4TH_ARG))

#endif /* SEND_NONCONST_ARG2 */

#else /* HAVE_SEND */

#ifndef swrite

#error "Missing definition of macro swrite"

#endif

#endif /* HAVE_SEND */

/*

 * Function-like macro definition used to close a socket.

 */

#ifdef HAVE_CLOSESOCKET

#  define CURL_SCLOSE(x)  closesocket(x)

#elif defined(HAVE_CLOSESOCKET_CAMEL)

#  define CURL_SCLOSE(x)  CloseSocket(x)

#elif defined(MSDOS)  /* Watt-32 */

#  define CURL_SCLOSE(x)  close_s(x)

#elif defined(USE_LWIPSOCK)

#  define CURL_SCLOSE(x)  lwip_close(x)

#else

#  define CURL_SCLOSE(x)  close(x)

#endif

/*

 * Stack-independent version of fcntl() on sockets:

 */

#ifdef USE_LWIPSOCK

#  define sfcntl  lwip_fcntl

#else

#  define sfcntl  fcntl

#endif

/*

 * 'bool' stuff compatible with HP-UX headers.

 */

#if defined(__hpux) && !defined(HAVE_BOOL_T)

typedef int bool;

#  define false 0

#  define true 1

#  define HAVE_BOOL_T

#endif

/*

 * 'bool' exists on platforms with <stdbool.h>, i.e. C99 platforms.

 * On non-C99 platforms there is no bool, so define an enum for that.

 * On C99 platforms 'false' and 'true' also exist. Enum uses a

 * global namespace though, so use bool_false and bool_true.

 */

#ifndef HAVE_BOOL_T

typedef enum {

  bool_false = 0,

  bool_true = 1

} bool;

/*

 * Use a define to let 'true' and 'false' use those enums. There

 * are currently no use of true and false in libcurl proper, but

 * there are some in the examples. This will cater for any later

 * code happening to use true and false.

 */

#  define false bool_false

#  define true  bool_true

#  define HAVE_BOOL_T

#endif

/* the type we use for storing a single boolean bit */

typedef unsigned int curl_bit;

#define BIT(x) curl_bit x:1

/*

 * Redefine TRUE and FALSE too, to catch current use. With this

 * change, 'bool found = 1' will give a warning on MIPSPro, but

 * 'bool found = TRUE' will not. Change tested on IRIX/MIPSPro,

 * AIX 5.1/Xlc, Tru64 5.1/cc, w/make test too.

 */

#ifndef TRUE

#define TRUE true

#endif

#ifndef FALSE

#define FALSE false

#endif

#include "curl_ctype.h"

#if defined(DEBUGBUILD) && defined(NDEBUG)

#error "Debug-enabled builds cannot be combined with NDEBUG"

#endif

/*

 * Macro used to include code only in debug builds.

 */

#ifdef DEBUGBUILD

#define DEBUGF(x) x

#else

#define DEBUGF(x) do {} while(0)

#endif

/*

 * Macro used to include assertion code only in debug builds.

 */

#undef DEBUGASSERT

#ifdef DEBUGBUILD

#ifdef CURL_DEBUGASSERT

/* External assertion handler for custom integrations */

#define DEBUGASSERT(x) CURL_DEBUGASSERT(x)

#else

#define DEBUGASSERT(x) assert(x)

#endif

#else

#define DEBUGASSERT(x) do {} while(0)

#endif

/*

 * Macro SOCKERRNO / SET_SOCKERRNO() returns / sets the *socket-related* errno

 * (or equivalent) on this platform to hide platform details to code using it.

 */

#ifdef USE_WINSOCK

#define SOCKERRNO         ((int)WSAGetLastError())

#define SET_SOCKERRNO(x)  WSASetLastError((int)(x))

#else

#define SOCKERRNO         errno

#define SET_SOCKERRNO(x)  (errno = (x))

#endif

/*

 * Portable error number symbolic names defined to Winsock error codes.

 */

#ifdef USE_WINSOCK

#define SOCKEACCES        WSAEACCES

#define SOCKEADDRINUSE    WSAEADDRINUSE

#define SOCKEADDRNOTAVAIL WSAEADDRNOTAVAIL

#define SOCKEAFNOSUPPORT  WSAEAFNOSUPPORT

#define SOCKEBADF         WSAEBADF

#define SOCKECONNREFUSED  WSAECONNREFUSED

#define SOCKECONNRESET    WSAECONNRESET

#define SOCKEINPROGRESS   WSAEINPROGRESS

#define SOCKEINTR         WSAEINTR

#define SOCKEINVAL        WSAEINVAL

#define SOCKEISCONN       WSAEISCONN

#define SOCKEMSGSIZE      WSAEMSGSIZE

/* Use literal value to work around clang-tidy <=20 misreporting

  'readability-uppercase-literal-suffix' with mingw-w64 headers */

#define SOCKENOMEM        8L  /* WSA_NOT_ENOUGH_MEMORY */

#define SOCKETIMEDOUT     WSAETIMEDOUT

#define SOCKEWOULDBLOCK   WSAEWOULDBLOCK

#else

#define SOCKEACCES        EACCES

#define SOCKEADDRINUSE    EADDRINUSE

#define SOCKEADDRNOTAVAIL EADDRNOTAVAIL

#define SOCKEAFNOSUPPORT  EAFNOSUPPORT

#define SOCKEBADF         EBADF

#define SOCKECONNREFUSED  ECONNREFUSED

#define SOCKECONNRESET    ECONNRESET

#define SOCKEINPROGRESS   EINPROGRESS

#define SOCKEINTR         EINTR

#define SOCKEINVAL        EINVAL

#define SOCKEISCONN       EISCONN

#define SOCKEMSGSIZE      EMSGSIZE

#define SOCKENOMEM        ENOMEM

#ifdef ETIMEDOUT

#define SOCKETIMEDOUT     ETIMEDOUT

#endif

#define SOCKEWOULDBLOCK   EWOULDBLOCK

#endif