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1 #ifndef HEADER_CURL_SETUP_H
2 #define HEADER_CURL_SETUP_H
3 /***************************************************************************
4  *                                  _   _ ____  _
5  *  Project                     ___| | | |  _ \| |
6  *                             / __| | | | |_) | |
7  *                            | (__| |_| |  _ <| |___
8  *                             \___|\___/|_| \_\_____|
9  *
10  * Copyright (C) 1998 - 2018, Daniel Stenberg, <daniel@haxx.se>, et al.
11  *
12  * This software is licensed as described in the file COPYING, which
13  * you should have received as part of this distribution. The terms
14  * are also available at https://curl.haxx.se/docs/copyright.html.
15  *
16  * You may opt to use, copy, modify, merge, publish, distribute and/or sell
17  * copies of the Software, and permit persons to whom the Software is
18  * furnished to do so, under the terms of the COPYING file.
19  *
20  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
21  * KIND, either express or implied.
22  *
23  ***************************************************************************/
24 
25 #if defined(BUILDING_LIBCURL) && !defined(CURL_NO_OLDIES)
26 #define CURL_NO_OLDIES
27 #endif
28 
29 /*
30  * Define WIN32 when build target is Win32 API
31  */
32 
33 #if (defined(_WIN32) || defined(__WIN32__)) && !defined(WIN32) && \
34     !defined(__SYMBIAN32__)
35 #define WIN32
36 #endif
37 
38 #ifdef WIN32
39 /*
40  * Don't include unneeded stuff in Windows headers to avoid compiler
41  * warnings and macro clashes.
42  * Make sure to define this macro before including any Windows headers.
43  */
44 #  ifndef WIN32_LEAN_AND_MEAN
45 #    define WIN32_LEAN_AND_MEAN
46 #  endif
47 #endif
48 
49 /*
50  * Include configuration script results or hand-crafted
51  * configuration file for platforms which lack config tool.
52  */
53 
54 #ifdef HAVE_CONFIG_H
55 
56 #include "curl_config.h"
57 
58 #else /* HAVE_CONFIG_H */
59 
60 #ifdef _WIN32_WCE
61 #  include "config-win32ce.h"
62 #else
63 #  ifdef WIN32
64 #    include "config-win32.h"
65 #  endif
66 #endif
67 
68 #if defined(macintosh) && defined(__MRC__)
69 #  include "config-mac.h"
70 #endif
71 
72 #ifdef __riscos__
73 #  include "config-riscos.h"
74 #endif
75 
76 #ifdef __AMIGA__
77 #  include "config-amigaos.h"
78 #endif
79 
80 #ifdef __SYMBIAN32__
81 #  include "config-symbian.h"
82 #endif
83 
84 #ifdef __OS400__
85 #  include "config-os400.h"
86 #endif
87 
88 #ifdef TPF
89 #  include "config-tpf.h"
90 #endif
91 
92 #ifdef __VXWORKS__
93 #  include "config-vxworks.h"
94 #endif
95 
96 #endif /* HAVE_CONFIG_H */
97 
98 /* ================================================================ */
99 /* Definition of preprocessor macros/symbols which modify compiler  */
100 /* behavior or generated code characteristics must be done here,   */
101 /* as appropriate, before any system header file is included. It is */
102 /* also possible to have them defined in the config file included   */
103 /* before this point. As a result of all this we frown inclusion of */
104 /* system header files in our config files, avoid this at any cost. */
105 /* ================================================================ */
106 
107 /*
108  * AIX 4.3 and newer needs _THREAD_SAFE defined to build
109  * proper reentrant code. Others may also need it.
110  */
111 
112 #ifdef NEED_THREAD_SAFE
113 #  ifndef _THREAD_SAFE
114 #    define _THREAD_SAFE
115 #  endif
116 #endif
117 
118 /*
119  * Tru64 needs _REENTRANT set for a few function prototypes and
120  * things to appear in the system header files. Unixware needs it
121  * to build proper reentrant code. Others may also need it.
122  */
123 
124 #ifdef NEED_REENTRANT
125 #  ifndef _REENTRANT
126 #    define _REENTRANT
127 #  endif
128 #endif
129 
130 /* Solaris needs this to get a POSIX-conformant getpwuid_r */
131 #if defined(sun) || defined(__sun)
132 #  ifndef _POSIX_PTHREAD_SEMANTICS
133 #    define _POSIX_PTHREAD_SEMANTICS 1
134 #  endif
135 #endif
136 
137 /* ================================================================ */
138 /*  If you need to include a system header file for your platform,  */
139 /*  please, do it beyond the point further indicated in this file.  */
140 /* ================================================================ */
141 
142 #include <curl/curl.h>
143 
144 #define CURL_SIZEOF_CURL_OFF_T SIZEOF_CURL_OFF_T
145 
146 /*
147  * Disable other protocols when http is the only one desired.
148  */
149 
150 #ifdef HTTP_ONLY
151 #  ifndef CURL_DISABLE_TFTP
152 #    define CURL_DISABLE_TFTP
153 #  endif
154 #  ifndef CURL_DISABLE_FTP
155 #    define CURL_DISABLE_FTP
156 #  endif
157 #  ifndef CURL_DISABLE_LDAP
158 #    define CURL_DISABLE_LDAP
159 #  endif
160 #  ifndef CURL_DISABLE_TELNET
161 #    define CURL_DISABLE_TELNET
162 #  endif
163 #  ifndef CURL_DISABLE_DICT
164 #    define CURL_DISABLE_DICT
165 #  endif
166 #  ifndef CURL_DISABLE_FILE
167 #    define CURL_DISABLE_FILE
168 #  endif
169 #  ifndef CURL_DISABLE_RTSP
170 #    define CURL_DISABLE_RTSP
171 #  endif
172 #  ifndef CURL_DISABLE_POP3
173 #    define CURL_DISABLE_POP3
174 #  endif
175 #  ifndef CURL_DISABLE_IMAP
176 #    define CURL_DISABLE_IMAP
177 #  endif
178 #  ifndef CURL_DISABLE_SMTP
179 #    define CURL_DISABLE_SMTP
180 #  endif
181 #  ifndef CURL_DISABLE_GOPHER
182 #    define CURL_DISABLE_GOPHER
183 #  endif
184 #  ifndef CURL_DISABLE_SMB
185 #    define CURL_DISABLE_SMB
186 #  endif
187 #endif
188 
189 /*
190  * When http is disabled rtsp is not supported.
191  */
192 
193 #if defined(CURL_DISABLE_HTTP) && !defined(CURL_DISABLE_RTSP)
194 #  define CURL_DISABLE_RTSP
195 #endif
196 
197 /* ================================================================ */
198 /* No system header file shall be included in this file before this */
199 /* point. The only allowed ones are those included from curl/system.h */
200 /* ================================================================ */
201 
202 /*
203  * OS/400 setup file includes some system headers.
204  */
205 
206 #ifdef __OS400__
207 #  include "setup-os400.h"
208 #endif
209 
210 /*
211  * VMS setup file includes some system headers.
212  */
213 
214 #ifdef __VMS
215 #  include "setup-vms.h"
216 #endif
217 
218 /*
219  * Use getaddrinfo to resolve the IPv4 address literal. If the current network
220  * interface doesn’t support IPv4, but supports IPv6, NAT64, and DNS64,
221  * performing this task will result in a synthesized IPv6 address.
222  */
223 #ifdef  __APPLE__
224 #define USE_RESOLVE_ON_IPS 1
225 #endif
226 
227 /*
228  * Include header files for windows builds before redefining anything.
229  * Use this preprocessor block only to include or exclude windows.h,
230  * winsock2.h, ws2tcpip.h or winsock.h. Any other windows thing belongs
231  * to any other further and independent block.  Under Cygwin things work
232  * just as under linux (e.g. <sys/socket.h>) and the winsock headers should
233  * never be included when __CYGWIN__ is defined.  configure script takes
234  * care of this, not defining HAVE_WINDOWS_H, HAVE_WINSOCK_H, HAVE_WINSOCK2_H,
235  * neither HAVE_WS2TCPIP_H when __CYGWIN__ is defined.
236  */
237 
238 #ifdef HAVE_WINDOWS_H
239 #  if defined(UNICODE) && !defined(_UNICODE)
240 #    define _UNICODE
241 #  endif
242 #  if defined(_UNICODE) && !defined(UNICODE)
243 #    define UNICODE
244 #  endif
245 #  include <windows.h>
246 #  ifdef HAVE_WINSOCK2_H
247 #    include <winsock2.h>
248 #    ifdef HAVE_WS2TCPIP_H
249 #      include <ws2tcpip.h>
250 #    endif
251 #  else
252 #    ifdef HAVE_WINSOCK_H
253 #      include <winsock.h>
254 #    endif
255 #  endif
256 #  include <tchar.h>
257 #  ifdef UNICODE
258      typedef wchar_t *(*curl_wcsdup_callback)(const wchar_t *str);
259 #  endif
260 #endif
261 
262 /*
263  * Define USE_WINSOCK to 2 if we have and use WINSOCK2 API, else
264  * define USE_WINSOCK to 1 if we have and use WINSOCK  API, else
265  * undefine USE_WINSOCK.
266  */
267 
268 #undef USE_WINSOCK
269 
270 #ifdef HAVE_WINSOCK2_H
271 #  define USE_WINSOCK 2
272 #else
273 #  ifdef HAVE_WINSOCK_H
274 #    define USE_WINSOCK 1
275 #  endif
276 #endif
277 
278 #ifdef USE_LWIPSOCK
279 #  include <lwip/init.h>
280 #  include <lwip/sockets.h>
281 #  include <lwip/netdb.h>
282 #endif
283 
284 #ifdef HAVE_EXTRA_STRICMP_H
285 #  include <extra/stricmp.h>
286 #endif
287 
288 #ifdef HAVE_EXTRA_STRDUP_H
289 #  include <extra/strdup.h>
290 #endif
291 
292 #ifdef TPF
293 #  include <strings.h>    /* for bzero, strcasecmp, and strncasecmp */
294 #  include <string.h>     /* for strcpy and strlen */
295 #  include <stdlib.h>     /* for rand and srand */
296 #  include <sys/socket.h> /* for select and ioctl*/
297 #  include <netdb.h>      /* for in_addr_t definition */
298 #  include <tpf/sysapi.h> /* for tpf_process_signals */
299    /* change which select is used for libcurl */
300 #  define select(a,b,c,d,e) tpf_select_libcurl(a,b,c,d,e)
301 #endif
302 
303 #ifdef __VXWORKS__
304 #  include <sockLib.h>    /* for generic BSD socket functions */
305 #  include <ioLib.h>      /* for basic I/O interface functions */
306 #endif
307 
308 #ifdef __AMIGA__
309 #  ifndef __ixemul__
310 #    include <exec/types.h>
311 #    include <exec/execbase.h>
312 #    include <proto/exec.h>
313 #    include <proto/dos.h>
314 #    define select(a,b,c,d,e) WaitSelect(a,b,c,d,e,0)
315 #  endif
316 #endif
317 
318 #include <stdio.h>
319 #ifdef HAVE_ASSERT_H
320 #include <assert.h>
321 #endif
322 
323 #ifdef __TANDEM /* for nsr-tandem-nsk systems */
324 #include <floss.h>
325 #endif
326 
327 #ifndef STDC_HEADERS /* no standard C headers! */
328 #include <curl/stdcheaders.h>
329 #endif
330 
331 #ifdef __POCC__
332 #  include <sys/types.h>
333 #  include <unistd.h>
334 #  define sys_nerr EILSEQ
335 #endif
336 
337 /*
338  * Salford-C kludge section (mostly borrowed from wxWidgets).
339  */
340 #ifdef __SALFORDC__
341   #pragma suppress 353             /* Possible nested comments */
342   #pragma suppress 593             /* Define not used */
343   #pragma suppress 61              /* enum has no name */
344   #pragma suppress 106             /* unnamed, unused parameter */
345   #include <clib.h>
346 #endif
347 
348 /*
349  * Large file (>2Gb) support using WIN32 functions.
350  */
351 
352 #ifdef USE_WIN32_LARGE_FILES
353 #  include <io.h>
354 #  include <sys/types.h>
355 #  include <sys/stat.h>
356 #  undef  lseek
357 #  define lseek(fdes,offset,whence)  _lseeki64(fdes, offset, whence)
358 #  undef  fstat
359 #  define fstat(fdes,stp)            _fstati64(fdes, stp)
360 #  undef  stat
361 #  define stat(fname,stp)            _stati64(fname, stp)
362 #  define struct_stat                struct _stati64
363 #  define LSEEK_ERROR                (__int64)-1
364 #endif
365 
366 /*
367  * Small file (<2Gb) support using WIN32 functions.
368  */
369 
370 #ifdef USE_WIN32_SMALL_FILES
371 #  include <io.h>
372 #  include <sys/types.h>
373 #  include <sys/stat.h>
374 #  ifndef _WIN32_WCE
375 #    undef  lseek
376 #    define lseek(fdes,offset,whence)  _lseek(fdes, (long)offset, whence)
377 #    define fstat(fdes,stp)            _fstat(fdes, stp)
378 #    define stat(fname,stp)            _stat(fname, stp)
379 #    define struct_stat                struct _stat
380 #  endif
381 #  define LSEEK_ERROR                (long)-1
382 #endif
383 
384 #ifndef struct_stat
385 #  define struct_stat struct stat
386 #endif
387 
388 #ifndef LSEEK_ERROR
389 #  define LSEEK_ERROR (off_t)-1
390 #endif
391 
392 /*
393  * Default sizeof(off_t) in case it hasn't been defined in config file.
394  */
395 
396 #ifndef SIZEOF_OFF_T
397 #  if defined(__VMS) && !defined(__VAX)
398 #    if defined(_LARGEFILE)
399 #      define SIZEOF_OFF_T 8
400 #    endif
401 #  elif defined(__OS400__) && defined(__ILEC400__)
402 #    if defined(_LARGE_FILES)
403 #      define SIZEOF_OFF_T 8
404 #    endif
405 #  elif defined(__MVS__) && defined(__IBMC__)
406 #    if defined(_LP64) || defined(_LARGE_FILES)
407 #      define SIZEOF_OFF_T 8
408 #    endif
409 #  elif defined(__370__) && defined(__IBMC__)
410 #    if defined(_LP64) || defined(_LARGE_FILES)
411 #      define SIZEOF_OFF_T 8
412 #    endif
413 #  endif
414 #  ifndef SIZEOF_OFF_T
415 #    define SIZEOF_OFF_T 4
416 #  endif
417 #endif
418 
419 #if (SIZEOF_CURL_OFF_T == 4)
420 #  define CURL_OFF_T_MAX CURL_OFF_T_C(0x7FFFFFFF)
421 #else
422    /* assume CURL_SIZEOF_CURL_OFF_T == 8 */
423 #  define CURL_OFF_T_MAX CURL_OFF_T_C(0x7FFFFFFFFFFFFFFF)
424 #endif
425 #define CURL_OFF_T_MIN (-CURL_OFF_T_MAX - CURL_OFF_T_C(1))
426 
427 /*
428  * Arg 2 type for gethostname in case it hasn't been defined in config file.
429  */
430 
431 #ifndef GETHOSTNAME_TYPE_ARG2
432 #  ifdef USE_WINSOCK
433 #    define GETHOSTNAME_TYPE_ARG2 int
434 #  else
435 #    define GETHOSTNAME_TYPE_ARG2 size_t
436 #  endif
437 #endif
438 
439 /* Below we define some functions. They should
440 
441    4. set the SIGALRM signal timeout
442    5. set dir/file naming defines
443    */
444 
445 #ifdef WIN32
446 
447 #  define DIR_CHAR      "\\"
448 #  define DOT_CHAR      "_"
449 
450 #else /* WIN32 */
451 
452 #  ifdef MSDOS  /* Watt-32 */
453 
454 #    include <sys/ioctl.h>
455 #    define select(n,r,w,x,t) select_s(n,r,w,x,t)
456 #    define ioctl(x,y,z) ioctlsocket(x,y,(char *)(z))
457 #    include <tcp.h>
458 #    ifdef word
459 #      undef word
460 #    endif
461 #    ifdef byte
462 #      undef byte
463 #    endif
464 
465 #  endif /* MSDOS */
466 
467 #  ifdef __minix
468      /* Minix 3 versions up to at least 3.1.3 are missing these prototypes */
469      extern char *strtok_r(char *s, const char *delim, char **last);
470      extern struct tm *gmtime_r(const time_t * const timep, struct tm *tmp);
471 #  endif
472 
473 #  define DIR_CHAR      "/"
474 #  ifndef DOT_CHAR
475 #    define DOT_CHAR      "."
476 #  endif
477 
478 #  ifdef MSDOS
479 #    undef DOT_CHAR
480 #    define DOT_CHAR      "_"
481 #  endif
482 
483 #  ifndef fileno /* sunos 4 have this as a macro! */
484      int fileno(FILE *stream);
485 #  endif
486 
487 #endif /* WIN32 */
488 
489 /*
490  * msvc 6.0 requires PSDK in order to have INET6_ADDRSTRLEN
491  * defined in ws2tcpip.h as well as to provide IPv6 support.
492  * Does not apply if lwIP is used.
493  */
494 
495 #if defined(_MSC_VER) && !defined(__POCC__) && !defined(USE_LWIPSOCK)
496 #  if !defined(HAVE_WS2TCPIP_H) || \
497      ((_MSC_VER < 1300) && !defined(INET6_ADDRSTRLEN))
498 #    undef HAVE_GETADDRINFO_THREADSAFE
499 #    undef HAVE_FREEADDRINFO
500 #    undef HAVE_GETADDRINFO
501 #    undef HAVE_GETNAMEINFO
502 #    undef ENABLE_IPV6
503 #  endif
504 #endif
505 
506 /* ---------------------------------------------------------------- */
507 /*             resolver specialty compile-time defines              */
508 /*         CURLRES_* defines to use in the host*.c sources          */
509 /* ---------------------------------------------------------------- */
510 
511 /*
512  * lcc-win32 doesn't have _beginthreadex(), lacks threads support.
513  */
514 
515 #if defined(__LCC__) && defined(WIN32)
516 #  undef USE_THREADS_POSIX
517 #  undef USE_THREADS_WIN32
518 #endif
519 
520 /*
521  * MSVC threads support requires a multi-threaded runtime library.
522  * _beginthreadex() is not available in single-threaded ones.
523  */
524 
525 #if defined(_MSC_VER) && !defined(__POCC__) && !defined(_MT)
526 #  undef USE_THREADS_POSIX
527 #  undef USE_THREADS_WIN32
528 #endif
529 
530 /*
531  * Mutually exclusive CURLRES_* definitions.
532  */
533 
534 #ifdef USE_ARES
535 #  define CURLRES_ASYNCH
536 #  define CURLRES_ARES
537 /* now undef the stock libc functions just to avoid them being used */
538 #  undef HAVE_GETADDRINFO
539 #  undef HAVE_FREEADDRINFO
540 #  undef HAVE_GETHOSTBYNAME
541 #elif defined(USE_THREADS_POSIX) || defined(USE_THREADS_WIN32)
542 #  define CURLRES_ASYNCH
543 #  define CURLRES_THREADED
544 #else
545 #  define CURLRES_SYNCH
546 #endif
547 
548 #ifdef ENABLE_IPV6
549 #  define CURLRES_IPV6
550 #else
551 #  define CURLRES_IPV4
552 #endif
553 
554 /* ---------------------------------------------------------------- */
555 
556 /*
557  * When using WINSOCK, TELNET protocol requires WINSOCK2 API.
558  */
559 
560 #if defined(USE_WINSOCK) && (USE_WINSOCK != 2)
561 #  define CURL_DISABLE_TELNET 1
562 #endif
563 
564 /*
565  * msvc 6.0 does not have struct sockaddr_storage and
566  * does not define IPPROTO_ESP in winsock2.h. But both
567  * are available if PSDK is properly installed.
568  */
569 
570 #if defined(_MSC_VER) && !defined(__POCC__)
571 #  if !defined(HAVE_WINSOCK2_H) || ((_MSC_VER < 1300) && !defined(IPPROTO_ESP))
572 #    undef HAVE_STRUCT_SOCKADDR_STORAGE
573 #  endif
574 #endif
575 
576 /*
577  * Intentionally fail to build when using msvc 6.0 without PSDK installed.
578  * The brave of heart can circumvent this, defining ALLOW_MSVC6_WITHOUT_PSDK
579  * in lib/config-win32.h although absolutely discouraged and unsupported.
580  */
581 
582 #if defined(_MSC_VER) && !defined(__POCC__)
583 #  if !defined(HAVE_WINDOWS_H) || ((_MSC_VER < 1300) && !defined(_FILETIME_))
584 #    if !defined(ALLOW_MSVC6_WITHOUT_PSDK)
585 #      error MSVC 6.0 requires "February 2003 Platform SDK" a.k.a. \
586              "Windows Server 2003 PSDK"
587 #    else
588 #      define CURL_DISABLE_LDAP 1
589 #    endif
590 #  endif
591 #endif
592 
593 #ifdef NETWARE
594 int netware_init(void);
595 #ifndef __NOVELL_LIBC__
596 #include <sys/bsdskt.h>
597 #include <sys/timeval.h>
598 #endif
599 #endif
600 
601 #if defined(HAVE_LIBIDN2) && defined(HAVE_IDN2_H) && !defined(USE_WIN32_IDN)
602 /* The lib and header are present */
603 #define USE_LIBIDN2
604 #endif
605 
606 #if defined(USE_LIBIDN2) && defined(USE_WIN32_IDN)
607 #error "Both libidn2 and WinIDN are enabled, choose one."
608 #endif
609 
610 #ifndef SIZEOF_TIME_T
611 /* assume default size of time_t to be 32 bit */
612 #define SIZEOF_TIME_T 4
613 #endif
614 
615 #define LIBIDN_REQUIRED_VERSION "0.4.1"
616 
617 #if defined(USE_GNUTLS) || defined(USE_OPENSSL) || defined(USE_NSS) || \
618     defined(USE_POLARSSL) || defined(USE_AXTLS) || defined(USE_MBEDTLS) || \
619     defined(USE_CYASSL) || defined(USE_SCHANNEL) || \
620     defined(USE_DARWINSSL) || defined(USE_GSKIT)
621 #define USE_SSL    /* SSL support has been enabled */
622 #endif
623 
624 /* Single point where USE_SPNEGO definition might be defined */
625 #if !defined(CURL_DISABLE_CRYPTO_AUTH) && \
626     (defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI))
627 #define USE_SPNEGO
628 #endif
629 
630 /* Single point where USE_KERBEROS5 definition might be defined */
631 #if !defined(CURL_DISABLE_CRYPTO_AUTH) && \
632     (defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI))
633 #define USE_KERBEROS5
634 #endif
635 
636 /* Single point where USE_NTLM definition might be defined */
637 #if !defined(CURL_DISABLE_NTLM) && !defined(CURL_DISABLE_CRYPTO_AUTH)
638 #if defined(USE_OPENSSL) || defined(USE_WINDOWS_SSPI) || \
639     defined(USE_GNUTLS) || defined(USE_NSS) || defined(USE_DARWINSSL) || \
640     defined(USE_OS400CRYPTO) || defined(USE_WIN32_CRYPTO) || \
641     defined(USE_MBEDTLS)
642 
643 #define USE_NTLM
644 
645 #  if defined(USE_MBEDTLS)
646 /* Get definition of MBEDTLS_MD4_C */
647 #  include <mbedtls/md4.h>
648 #  endif
649 
650 #endif
651 #endif
652 
653 #ifdef CURL_WANTS_CA_BUNDLE_ENV
654 #error "No longer supported. Set CURLOPT_CAINFO at runtime instead."
655 #endif
656 
657 /*
658  * Provide a mechanism to silence picky compilers, such as gcc 4.6+.
659  * Parameters should of course normally not be unused, but for example when
660  * we have multiple implementations of the same interface it may happen.
661  */
662 
663 #if defined(__GNUC__) && ((__GNUC__ >= 3) || \
664   ((__GNUC__ == 2) && defined(__GNUC_MINOR__) && (__GNUC_MINOR__ >= 7)))
665 #  define UNUSED_PARAM __attribute__((__unused__))
666 #  define WARN_UNUSED_RESULT __attribute__((warn_unused_result))
667 #else
668 #  define UNUSED_PARAM /*NOTHING*/
669 #  define WARN_UNUSED_RESULT
670 #endif
671 
672 /*
673  * Include macros and defines that should only be processed once.
674  */
675 
676 #ifndef HEADER_CURL_SETUP_ONCE_H
677 #include "curl_setup_once.h"
678 #endif
679 
680 /*
681  * Definition of our NOP statement Object-like macro
682  */
683 
684 #ifndef Curl_nop_stmt
685 #  define Curl_nop_stmt do { } WHILE_FALSE
686 #endif
687 
688 /*
689  * Ensure that Winsock and lwIP TCP/IP stacks are not mixed.
690  */
691 
692 #if defined(__LWIP_OPT_H__) || defined(LWIP_HDR_OPT_H)
693 #  if defined(SOCKET) || \
694      defined(USE_WINSOCK) || \
695      defined(HAVE_WINSOCK_H) || \
696      defined(HAVE_WINSOCK2_H) || \
697      defined(HAVE_WS2TCPIP_H)
698 #    error "Winsock and lwIP TCP/IP stack definitions shall not coexist!"
699 #  endif
700 #endif
701 
702 /*
703  * Portable symbolic names for Winsock shutdown() mode flags.
704  */
705 
706 #ifdef USE_WINSOCK
707 #  define SHUT_RD   0x00
708 #  define SHUT_WR   0x01
709 #  define SHUT_RDWR 0x02
710 #endif
711 
712 /* Define S_ISREG if not defined by system headers, f.e. MSVC */
713 #if !defined(S_ISREG) && defined(S_IFMT) && defined(S_IFREG)
714 #define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
715 #endif
716 
717 /* Define S_ISDIR if not defined by system headers, f.e. MSVC */
718 #if !defined(S_ISDIR) && defined(S_IFMT) && defined(S_IFDIR)
719 #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
720 #endif
721 
722 /* In Windows the default file mode is text but an application can override it.
723 Therefore we specify it explicitly. https://github.com/curl/curl/pull/258
724 */
725 #if defined(WIN32) || defined(MSDOS)
726 #define FOPEN_READTEXT "rt"
727 #define FOPEN_WRITETEXT "wt"
728 #define FOPEN_APPENDTEXT "at"
729 #elif defined(__CYGWIN__)
730 /* Cygwin has specific behavior we need to address when WIN32 is not defined.
731 https://cygwin.com/cygwin-ug-net/using-textbinary.html
732 For write we want our output to have line endings of LF and be compatible with
733 other Cygwin utilities. For read we want to handle input that may have line
734 endings either CRLF or LF so 't' is appropriate.
735 */
736 #define FOPEN_READTEXT "rt"
737 #define FOPEN_WRITETEXT "w"
738 #define FOPEN_APPENDTEXT "a"
739 #else
740 #define FOPEN_READTEXT "r"
741 #define FOPEN_WRITETEXT "w"
742 #define FOPEN_APPENDTEXT "a"
743 #endif
744 
745 /* WinSock destroys recv() buffer when send() failed.
746  * Enabled automatically for Windows and for Cygwin as Cygwin sockets are
747  * wrappers for WinSock sockets. https://github.com/curl/curl/issues/657
748  * Define DONT_USE_RECV_BEFORE_SEND_WORKAROUND to force disable workaround.
749  */
750 #if !defined(DONT_USE_RECV_BEFORE_SEND_WORKAROUND)
751 #  if defined(WIN32) || defined(__CYGWIN__)
752 #    define USE_RECV_BEFORE_SEND_WORKAROUND
753 #  endif
754 #else  /* DONT_USE_RECV_BEFORE_SEND_WORKAROUNDS */
755 #  ifdef USE_RECV_BEFORE_SEND_WORKAROUND
756 #    undef USE_RECV_BEFORE_SEND_WORKAROUND
757 #  endif
758 #endif /* DONT_USE_RECV_BEFORE_SEND_WORKAROUNDS */
759 
760 /* Detect Windows App environment which has a restricted access
761  * to the Win32 APIs. */
762 # if (defined(_WIN32_WINNT) && (_WIN32_WINNT >= 0x0602)) || \
763   defined(WINAPI_FAMILY)
764 #  include <winapifamily.h>
765 #  if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_APP) &&  \
766      !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
767 #    define CURL_WINDOWS_APP
768 #  endif
769 # endif
770 
771 #endif /* HEADER_CURL_SETUP_H */
772