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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 - 2019, 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 #  ifndef NOGDI
48 #    define NOGDI
49 #  endif
50 #endif
51 
52 /*
53  * Include configuration script results or hand-crafted
54  * configuration file for platforms which lack config tool.
55  */
56 
57 #ifdef HAVE_CONFIG_H
58 
59 #include "curl_config.h"
60 
61 #else /* HAVE_CONFIG_H */
62 
63 #ifdef _WIN32_WCE
64 #  include "config-win32ce.h"
65 #else
66 #  ifdef WIN32
67 #    include "config-win32.h"
68 #  endif
69 #endif
70 
71 #if defined(macintosh) && defined(__MRC__)
72 #  include "config-mac.h"
73 #endif
74 
75 #ifdef __riscos__
76 #  include "config-riscos.h"
77 #endif
78 
79 #ifdef __AMIGA__
80 #  include "config-amigaos.h"
81 #endif
82 
83 #ifdef __SYMBIAN32__
84 #  include "config-symbian.h"
85 #endif
86 
87 #ifdef __OS400__
88 #  include "config-os400.h"
89 #endif
90 
91 #ifdef TPF
92 #  include "config-tpf.h"
93 #endif
94 
95 #ifdef __VXWORKS__
96 #  include "config-vxworks.h"
97 #endif
98 
99 #endif /* HAVE_CONFIG_H */
100 
101 /* ================================================================ */
102 /* Definition of preprocessor macros/symbols which modify compiler  */
103 /* behavior or generated code characteristics must be done here,   */
104 /* as appropriate, before any system header file is included. It is */
105 /* also possible to have them defined in the config file included   */
106 /* before this point. As a result of all this we frown inclusion of */
107 /* system header files in our config files, avoid this at any cost. */
108 /* ================================================================ */
109 
110 /*
111  * AIX 4.3 and newer needs _THREAD_SAFE defined to build
112  * proper reentrant code. Others may also need it.
113  */
114 
115 #ifdef NEED_THREAD_SAFE
116 #  ifndef _THREAD_SAFE
117 #    define _THREAD_SAFE
118 #  endif
119 #endif
120 
121 /*
122  * Tru64 needs _REENTRANT set for a few function prototypes and
123  * things to appear in the system header files. Unixware needs it
124  * to build proper reentrant code. Others may also need it.
125  */
126 
127 #ifdef NEED_REENTRANT
128 #  ifndef _REENTRANT
129 #    define _REENTRANT
130 #  endif
131 #endif
132 
133 /* Solaris needs this to get a POSIX-conformant getpwuid_r */
134 #if defined(sun) || defined(__sun)
135 #  ifndef _POSIX_PTHREAD_SEMANTICS
136 #    define _POSIX_PTHREAD_SEMANTICS 1
137 #  endif
138 #endif
139 
140 /* ================================================================ */
141 /*  If you need to include a system header file for your platform,  */
142 /*  please, do it beyond the point further indicated in this file.  */
143 /* ================================================================ */
144 
145 #include <curl/curl.h>
146 
147 #define CURL_SIZEOF_CURL_OFF_T SIZEOF_CURL_OFF_T
148 
149 /*
150  * Disable other protocols when http is the only one desired.
151  */
152 
153 #ifdef HTTP_ONLY
154 #  ifndef CURL_DISABLE_TFTP
155 #    define CURL_DISABLE_TFTP
156 #  endif
157 #  ifndef CURL_DISABLE_FTP
158 #    define CURL_DISABLE_FTP
159 #  endif
160 #  ifndef CURL_DISABLE_LDAP
161 #    define CURL_DISABLE_LDAP
162 #  endif
163 #  ifndef CURL_DISABLE_TELNET
164 #    define CURL_DISABLE_TELNET
165 #  endif
166 #  ifndef CURL_DISABLE_DICT
167 #    define CURL_DISABLE_DICT
168 #  endif
169 #  ifndef CURL_DISABLE_FILE
170 #    define CURL_DISABLE_FILE
171 #  endif
172 #  ifndef CURL_DISABLE_RTSP
173 #    define CURL_DISABLE_RTSP
174 #  endif
175 #  ifndef CURL_DISABLE_POP3
176 #    define CURL_DISABLE_POP3
177 #  endif
178 #  ifndef CURL_DISABLE_IMAP
179 #    define CURL_DISABLE_IMAP
180 #  endif
181 #  ifndef CURL_DISABLE_SMTP
182 #    define CURL_DISABLE_SMTP
183 #  endif
184 #  ifndef CURL_DISABLE_GOPHER
185 #    define CURL_DISABLE_GOPHER
186 #  endif
187 #  ifndef CURL_DISABLE_SMB
188 #    define CURL_DISABLE_SMB
189 #  endif
190 #endif
191 
192 /*
193  * When http is disabled rtsp is not supported.
194  */
195 
196 #if defined(CURL_DISABLE_HTTP) && !defined(CURL_DISABLE_RTSP)
197 #  define CURL_DISABLE_RTSP
198 #endif
199 
200 /* ================================================================ */
201 /* No system header file shall be included in this file before this */
202 /* point. The only allowed ones are those included from curl/system.h */
203 /* ================================================================ */
204 
205 /*
206  * OS/400 setup file includes some system headers.
207  */
208 
209 #ifdef __OS400__
210 #  include "setup-os400.h"
211 #endif
212 
213 /*
214  * VMS setup file includes some system headers.
215  */
216 
217 #ifdef __VMS
218 #  include "setup-vms.h"
219 #endif
220 
221 /*
222  * Use getaddrinfo to resolve the IPv4 address literal. If the current network
223  * interface doesn't support IPv4, but supports IPv6, NAT64, and DNS64,
224  * performing this task will result in a synthesized IPv6 address.
225  */
226 #ifdef  __APPLE__
227 #define USE_RESOLVE_ON_IPS 1
228 #endif
229 
230 /*
231  * Include header files for windows builds before redefining anything.
232  * Use this preprocessor block only to include or exclude windows.h,
233  * winsock2.h, ws2tcpip.h or winsock.h. Any other windows thing belongs
234  * to any other further and independent block.  Under Cygwin things work
235  * just as under linux (e.g. <sys/socket.h>) and the winsock headers should
236  * never be included when __CYGWIN__ is defined.  configure script takes
237  * care of this, not defining HAVE_WINDOWS_H, HAVE_WINSOCK_H, HAVE_WINSOCK2_H,
238  * neither HAVE_WS2TCPIP_H when __CYGWIN__ is defined.
239  */
240 
241 #ifdef HAVE_WINDOWS_H
242 #  if defined(UNICODE) && !defined(_UNICODE)
243 #    define _UNICODE
244 #  endif
245 #  if defined(_UNICODE) && !defined(UNICODE)
246 #    define UNICODE
247 #  endif
248 #  include <winerror.h>
249 #  include <windows.h>
250 #  ifdef HAVE_WINSOCK2_H
251 #    include <winsock2.h>
252 #    ifdef HAVE_WS2TCPIP_H
253 #      include <ws2tcpip.h>
254 #    endif
255 #  else
256 #    ifdef HAVE_WINSOCK_H
257 #      include <winsock.h>
258 #    endif
259 #  endif
260 #  include <tchar.h>
261 #  ifdef UNICODE
262      typedef wchar_t *(*curl_wcsdup_callback)(const wchar_t *str);
263 #  endif
264 #endif
265 
266 /*
267  * Define USE_WINSOCK to 2 if we have and use WINSOCK2 API, else
268  * define USE_WINSOCK to 1 if we have and use WINSOCK  API, else
269  * undefine USE_WINSOCK.
270  */
271 
272 #undef USE_WINSOCK
273 
274 #ifdef HAVE_WINSOCK2_H
275 #  define USE_WINSOCK 2
276 #else
277 #  ifdef HAVE_WINSOCK_H
278 #    define USE_WINSOCK 1
279 #  endif
280 #endif
281 
282 #ifdef USE_LWIPSOCK
283 #  include <lwip/init.h>
284 #  include <lwip/sockets.h>
285 #  include <lwip/netdb.h>
286 #endif
287 
288 #ifdef HAVE_EXTRA_STRICMP_H
289 #  include <extra/stricmp.h>
290 #endif
291 
292 #ifdef HAVE_EXTRA_STRDUP_H
293 #  include <extra/strdup.h>
294 #endif
295 
296 #ifdef TPF
297 #  include <strings.h>    /* for bzero, strcasecmp, and strncasecmp */
298 #  include <string.h>     /* for strcpy and strlen */
299 #  include <stdlib.h>     /* for rand and srand */
300 #  include <sys/socket.h> /* for select and ioctl*/
301 #  include <netdb.h>      /* for in_addr_t definition */
302 #  include <tpf/sysapi.h> /* for tpf_process_signals */
303    /* change which select is used for libcurl */
304 #  define select(a,b,c,d,e) tpf_select_libcurl(a,b,c,d,e)
305 #endif
306 
307 #ifdef __VXWORKS__
308 #  include <sockLib.h>    /* for generic BSD socket functions */
309 #  include <ioLib.h>      /* for basic I/O interface functions */
310 #endif
311 
312 #ifdef __AMIGA__
313 #  include <exec/types.h>
314 #  include <exec/execbase.h>
315 #  include <proto/exec.h>
316 #  include <proto/dos.h>
317 #  ifdef HAVE_PROTO_BSDSOCKET_H
318 #    include <proto/bsdsocket.h> /* ensure bsdsocket.library use */
319 #    define select(a,b,c,d,e) WaitSelect(a,b,c,d,e,0)
320 #  endif
321 #endif
322 
323 #include <stdio.h>
324 #ifdef HAVE_ASSERT_H
325 #include <assert.h>
326 #endif
327 
328 #ifdef __TANDEM /* for nsr-tandem-nsk systems */
329 #include <floss.h>
330 #endif
331 
332 #ifndef STDC_HEADERS /* no standard C headers! */
333 #include <curl/stdcheaders.h>
334 #endif
335 
336 #ifdef __POCC__
337 #  include <sys/types.h>
338 #  include <unistd.h>
339 #  define sys_nerr EILSEQ
340 #endif
341 
342 /*
343  * Salford-C kludge section (mostly borrowed from wxWidgets).
344  */
345 #ifdef __SALFORDC__
346   #pragma suppress 353             /* Possible nested comments */
347   #pragma suppress 593             /* Define not used */
348   #pragma suppress 61              /* enum has no name */
349   #pragma suppress 106             /* unnamed, unused parameter */
350   #include <clib.h>
351 #endif
352 
353 /*
354  * Large file (>2Gb) support using WIN32 functions.
355  */
356 
357 #ifdef USE_WIN32_LARGE_FILES
358 #  include <io.h>
359 #  include <sys/types.h>
360 #  include <sys/stat.h>
361 #  undef  lseek
362 #  define lseek(fdes,offset,whence)  _lseeki64(fdes, offset, whence)
363 #  undef  fstat
364 #  define fstat(fdes,stp)            _fstati64(fdes, stp)
365 #  undef  stat
366 #  define stat(fname,stp)            _stati64(fname, stp)
367 #  define struct_stat                struct _stati64
368 #  define LSEEK_ERROR                (__int64)-1
369 #endif
370 
371 /*
372  * Small file (<2Gb) support using WIN32 functions.
373  */
374 
375 #ifdef USE_WIN32_SMALL_FILES
376 #  include <io.h>
377 #  include <sys/types.h>
378 #  include <sys/stat.h>
379 #  ifndef _WIN32_WCE
380 #    undef  lseek
381 #    define lseek(fdes,offset,whence)  _lseek(fdes, (long)offset, whence)
382 #    define fstat(fdes,stp)            _fstat(fdes, stp)
383 #    define stat(fname,stp)            _stat(fname, stp)
384 #    define struct_stat                struct _stat
385 #  endif
386 #  define LSEEK_ERROR                (long)-1
387 #endif
388 
389 #ifndef struct_stat
390 #  define struct_stat struct stat
391 #endif
392 
393 #ifndef LSEEK_ERROR
394 #  define LSEEK_ERROR (off_t)-1
395 #endif
396 
397 #ifndef SIZEOF_TIME_T
398 /* assume default size of time_t to be 32 bit */
399 #define SIZEOF_TIME_T 4
400 #endif
401 
402 /*
403  * Default sizeof(off_t) in case it hasn't been defined in config file.
404  */
405 
406 #ifndef SIZEOF_OFF_T
407 #  if defined(__VMS) && !defined(__VAX)
408 #    if defined(_LARGEFILE)
409 #      define SIZEOF_OFF_T 8
410 #    endif
411 #  elif defined(__OS400__) && defined(__ILEC400__)
412 #    if defined(_LARGE_FILES)
413 #      define SIZEOF_OFF_T 8
414 #    endif
415 #  elif defined(__MVS__) && defined(__IBMC__)
416 #    if defined(_LP64) || defined(_LARGE_FILES)
417 #      define SIZEOF_OFF_T 8
418 #    endif
419 #  elif defined(__370__) && defined(__IBMC__)
420 #    if defined(_LP64) || defined(_LARGE_FILES)
421 #      define SIZEOF_OFF_T 8
422 #    endif
423 #  endif
424 #  ifndef SIZEOF_OFF_T
425 #    define SIZEOF_OFF_T 4
426 #  endif
427 #endif
428 
429 #if (SIZEOF_CURL_OFF_T == 4)
430 #  define CURL_OFF_T_MAX CURL_OFF_T_C(0x7FFFFFFF)
431 #else
432    /* assume CURL_SIZEOF_CURL_OFF_T == 8 */
433 #  define CURL_OFF_T_MAX CURL_OFF_T_C(0x7FFFFFFFFFFFFFFF)
434 #endif
435 #define CURL_OFF_T_MIN (-CURL_OFF_T_MAX - CURL_OFF_T_C(1))
436 
437 #if (SIZEOF_TIME_T == 4)
438 #  ifdef HAVE_TIME_T_UNSIGNED
439 #  define TIME_T_MAX UINT_MAX
440 #  define TIME_T_MIN 0
441 #  else
442 #  define TIME_T_MAX INT_MAX
443 #  define TIME_T_MIN INT_MIN
444 #  endif
445 #else
446 #  ifdef HAVE_TIME_T_UNSIGNED
447 #  define TIME_T_MAX 0xFFFFFFFFFFFFFFFF
448 #  define TIME_T_MIN 0
449 #  else
450 #  define TIME_T_MAX 0x7FFFFFFFFFFFFFFF
451 #  define TIME_T_MIN (-TIME_T_MAX - 1)
452 #  endif
453 #endif
454 
455 #ifndef SIZE_T_MAX
456 /* some limits.h headers have this defined, some don't */
457 #if defined(SIZEOF_SIZE_T) && (SIZEOF_SIZE_T > 4)
458 #define SIZE_T_MAX 18446744073709551615U
459 #else
460 #define SIZE_T_MAX 4294967295U
461 #endif
462 #endif
463 
464 /*
465  * Arg 2 type for gethostname in case it hasn't been defined in config file.
466  */
467 
468 #ifndef GETHOSTNAME_TYPE_ARG2
469 #  ifdef USE_WINSOCK
470 #    define GETHOSTNAME_TYPE_ARG2 int
471 #  else
472 #    define GETHOSTNAME_TYPE_ARG2 size_t
473 #  endif
474 #endif
475 
476 /* Below we define some functions. They should
477 
478    4. set the SIGALRM signal timeout
479    5. set dir/file naming defines
480    */
481 
482 #ifdef WIN32
483 
484 #  define DIR_CHAR      "\\"
485 #  define DOT_CHAR      "_"
486 
487 #else /* WIN32 */
488 
489 #  ifdef MSDOS  /* Watt-32 */
490 
491 #    include <sys/ioctl.h>
492 #    define select(n,r,w,x,t) select_s(n,r,w,x,t)
493 #    define ioctl(x,y,z) ioctlsocket(x,y,(char *)(z))
494 #    include <tcp.h>
495 #    ifdef word
496 #      undef word
497 #    endif
498 #    ifdef byte
499 #      undef byte
500 #    endif
501 
502 #  endif /* MSDOS */
503 
504 #  ifdef __minix
505      /* Minix 3 versions up to at least 3.1.3 are missing these prototypes */
506      extern char *strtok_r(char *s, const char *delim, char **last);
507      extern struct tm *gmtime_r(const time_t * const timep, struct tm *tmp);
508 #  endif
509 
510 #  define DIR_CHAR      "/"
511 #  ifndef DOT_CHAR
512 #    define DOT_CHAR      "."
513 #  endif
514 
515 #  ifdef MSDOS
516 #    undef DOT_CHAR
517 #    define DOT_CHAR      "_"
518 #  endif
519 
520 #  ifndef fileno /* sunos 4 have this as a macro! */
521      int fileno(FILE *stream);
522 #  endif
523 
524 #endif /* WIN32 */
525 
526 /*
527  * msvc 6.0 requires PSDK in order to have INET6_ADDRSTRLEN
528  * defined in ws2tcpip.h as well as to provide IPv6 support.
529  * Does not apply if lwIP is used.
530  */
531 
532 #if defined(_MSC_VER) && !defined(__POCC__) && !defined(USE_LWIPSOCK)
533 #  if !defined(HAVE_WS2TCPIP_H) || \
534      ((_MSC_VER < 1300) && !defined(INET6_ADDRSTRLEN))
535 #    undef HAVE_GETADDRINFO_THREADSAFE
536 #    undef HAVE_FREEADDRINFO
537 #    undef HAVE_GETADDRINFO
538 #    undef HAVE_GETNAMEINFO
539 #    undef ENABLE_IPV6
540 #  endif
541 #endif
542 
543 /* ---------------------------------------------------------------- */
544 /*             resolver specialty compile-time defines              */
545 /*         CURLRES_* defines to use in the host*.c sources          */
546 /* ---------------------------------------------------------------- */
547 
548 /*
549  * lcc-win32 doesn't have _beginthreadex(), lacks threads support.
550  */
551 
552 #if defined(__LCC__) && defined(WIN32)
553 #  undef USE_THREADS_POSIX
554 #  undef USE_THREADS_WIN32
555 #endif
556 
557 /*
558  * MSVC threads support requires a multi-threaded runtime library.
559  * _beginthreadex() is not available in single-threaded ones.
560  */
561 
562 #if defined(_MSC_VER) && !defined(__POCC__) && !defined(_MT)
563 #  undef USE_THREADS_POSIX
564 #  undef USE_THREADS_WIN32
565 #endif
566 
567 /*
568  * Mutually exclusive CURLRES_* definitions.
569  */
570 
571 #ifdef USE_ARES
572 #  define CURLRES_ASYNCH
573 #  define CURLRES_ARES
574 /* now undef the stock libc functions just to avoid them being used */
575 #  undef HAVE_GETADDRINFO
576 #  undef HAVE_FREEADDRINFO
577 #  undef HAVE_GETHOSTBYNAME
578 #elif defined(USE_THREADS_POSIX) || defined(USE_THREADS_WIN32)
579 #  define CURLRES_ASYNCH
580 #  define CURLRES_THREADED
581 #else
582 #  define CURLRES_SYNCH
583 #endif
584 
585 #ifdef ENABLE_IPV6
586 #  define CURLRES_IPV6
587 #else
588 #  define CURLRES_IPV4
589 #endif
590 
591 /* ---------------------------------------------------------------- */
592 
593 /*
594  * When using WINSOCK, TELNET protocol requires WINSOCK2 API.
595  */
596 
597 #if defined(USE_WINSOCK) && (USE_WINSOCK != 2)
598 #  define CURL_DISABLE_TELNET 1
599 #endif
600 
601 /*
602  * msvc 6.0 does not have struct sockaddr_storage and
603  * does not define IPPROTO_ESP in winsock2.h. But both
604  * are available if PSDK is properly installed.
605  */
606 
607 #if defined(_MSC_VER) && !defined(__POCC__)
608 #  if !defined(HAVE_WINSOCK2_H) || ((_MSC_VER < 1300) && !defined(IPPROTO_ESP))
609 #    undef HAVE_STRUCT_SOCKADDR_STORAGE
610 #  endif
611 #endif
612 
613 /*
614  * Intentionally fail to build when using msvc 6.0 without PSDK installed.
615  * The brave of heart can circumvent this, defining ALLOW_MSVC6_WITHOUT_PSDK
616  * in lib/config-win32.h although absolutely discouraged and unsupported.
617  */
618 
619 #if defined(_MSC_VER) && !defined(__POCC__)
620 #  if !defined(HAVE_WINDOWS_H) || ((_MSC_VER < 1300) && !defined(_FILETIME_))
621 #    if !defined(ALLOW_MSVC6_WITHOUT_PSDK)
622 #      error MSVC 6.0 requires "February 2003 Platform SDK" a.k.a. \
623              "Windows Server 2003 PSDK"
624 #    else
625 #      define CURL_DISABLE_LDAP 1
626 #    endif
627 #  endif
628 #endif
629 
630 #ifdef NETWARE
631 int netware_init(void);
632 #ifndef __NOVELL_LIBC__
633 #include <sys/bsdskt.h>
634 #include <sys/timeval.h>
635 #endif
636 #endif
637 
638 #if defined(HAVE_LIBIDN2) && defined(HAVE_IDN2_H) && !defined(USE_WIN32_IDN)
639 /* The lib and header are present */
640 #define USE_LIBIDN2
641 #endif
642 
643 #if defined(USE_LIBIDN2) && defined(USE_WIN32_IDN)
644 #error "Both libidn2 and WinIDN are enabled, choose one."
645 #endif
646 
647 #define LIBIDN_REQUIRED_VERSION "0.4.1"
648 
649 #if defined(USE_GNUTLS) || defined(USE_OPENSSL) || defined(USE_NSS) || \
650     defined(USE_POLARSSL) || defined(USE_MBEDTLS) || \
651     defined(USE_CYASSL) || defined(USE_SCHANNEL) || \
652     defined(USE_SECTRANSP) || defined(USE_GSKIT) || defined(USE_MESALINK)
653 #define USE_SSL    /* SSL support has been enabled */
654 #endif
655 
656 /* Single point where USE_SPNEGO definition might be defined */
657 #if !defined(CURL_DISABLE_CRYPTO_AUTH) && \
658     (defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI))
659 #define USE_SPNEGO
660 #endif
661 
662 /* Single point where USE_KERBEROS5 definition might be defined */
663 #if !defined(CURL_DISABLE_CRYPTO_AUTH) && \
664     (defined(HAVE_GSSAPI) || defined(USE_WINDOWS_SSPI))
665 #define USE_KERBEROS5
666 #endif
667 
668 /* Single point where USE_NTLM definition might be defined */
669 #if !defined(CURL_DISABLE_NTLM) && !defined(CURL_DISABLE_CRYPTO_AUTH)
670 #if defined(USE_OPENSSL) || defined(USE_WINDOWS_SSPI) || \
671     defined(USE_GNUTLS) || defined(USE_NSS) || defined(USE_SECTRANSP) || \
672     defined(USE_OS400CRYPTO) || defined(USE_WIN32_CRYPTO) || \
673     defined(USE_MBEDTLS)
674 
675 #define USE_NTLM
676 
677 #  if defined(USE_MBEDTLS)
678 /* Get definition of MBEDTLS_MD4_C */
679 #  include <mbedtls/md4.h>
680 #  endif
681 
682 #endif
683 #endif
684 
685 #ifdef CURL_WANTS_CA_BUNDLE_ENV
686 #error "No longer supported. Set CURLOPT_CAINFO at runtime instead."
687 #endif
688 
689 /*
690  * Provide a mechanism to silence picky compilers, such as gcc 4.6+.
691  * Parameters should of course normally not be unused, but for example when
692  * we have multiple implementations of the same interface it may happen.
693  */
694 
695 #if defined(__GNUC__) && ((__GNUC__ >= 3) || \
696   ((__GNUC__ == 2) && defined(__GNUC_MINOR__) && (__GNUC_MINOR__ >= 7)))
697 #  define UNUSED_PARAM __attribute__((__unused__))
698 #  define WARN_UNUSED_RESULT __attribute__((warn_unused_result))
699 #else
700 #  define UNUSED_PARAM /*NOTHING*/
701 #  define WARN_UNUSED_RESULT
702 #endif
703 
704 /*
705  * Include macros and defines that should only be processed once.
706  */
707 
708 #ifndef HEADER_CURL_SETUP_ONCE_H
709 #include "curl_setup_once.h"
710 #endif
711 
712 /*
713  * Definition of our NOP statement Object-like macro
714  */
715 
716 #ifndef Curl_nop_stmt
717 #  define Curl_nop_stmt do { } WHILE_FALSE
718 #endif
719 
720 /*
721  * Ensure that Winsock and lwIP TCP/IP stacks are not mixed.
722  */
723 
724 #if defined(__LWIP_OPT_H__) || defined(LWIP_HDR_OPT_H)
725 #  if defined(SOCKET) || \
726      defined(USE_WINSOCK) || \
727      defined(HAVE_WINSOCK_H) || \
728      defined(HAVE_WINSOCK2_H) || \
729      defined(HAVE_WS2TCPIP_H)
730 #    error "Winsock and lwIP TCP/IP stack definitions shall not coexist!"
731 #  endif
732 #endif
733 
734 /*
735  * Portable symbolic names for Winsock shutdown() mode flags.
736  */
737 
738 #ifdef USE_WINSOCK
739 #  define SHUT_RD   0x00
740 #  define SHUT_WR   0x01
741 #  define SHUT_RDWR 0x02
742 #endif
743 
744 /* Define S_ISREG if not defined by system headers, f.e. MSVC */
745 #if !defined(S_ISREG) && defined(S_IFMT) && defined(S_IFREG)
746 #define S_ISREG(m) (((m) & S_IFMT) == S_IFREG)
747 #endif
748 
749 /* Define S_ISDIR if not defined by system headers, f.e. MSVC */
750 #if !defined(S_ISDIR) && defined(S_IFMT) && defined(S_IFDIR)
751 #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
752 #endif
753 
754 /* In Windows the default file mode is text but an application can override it.
755 Therefore we specify it explicitly. https://github.com/curl/curl/pull/258
756 */
757 #if defined(WIN32) || defined(MSDOS)
758 #define FOPEN_READTEXT "rt"
759 #define FOPEN_WRITETEXT "wt"
760 #define FOPEN_APPENDTEXT "at"
761 #elif defined(__CYGWIN__)
762 /* Cygwin has specific behavior we need to address when WIN32 is not defined.
763 https://cygwin.com/cygwin-ug-net/using-textbinary.html
764 For write we want our output to have line endings of LF and be compatible with
765 other Cygwin utilities. For read we want to handle input that may have line
766 endings either CRLF or LF so 't' is appropriate.
767 */
768 #define FOPEN_READTEXT "rt"
769 #define FOPEN_WRITETEXT "w"
770 #define FOPEN_APPENDTEXT "a"
771 #else
772 #define FOPEN_READTEXT "r"
773 #define FOPEN_WRITETEXT "w"
774 #define FOPEN_APPENDTEXT "a"
775 #endif
776 
777 /* WinSock destroys recv() buffer when send() failed.
778  * Enabled automatically for Windows and for Cygwin as Cygwin sockets are
779  * wrappers for WinSock sockets. https://github.com/curl/curl/issues/657
780  * Define DONT_USE_RECV_BEFORE_SEND_WORKAROUND to force disable workaround.
781  */
782 #if !defined(DONT_USE_RECV_BEFORE_SEND_WORKAROUND)
783 #  if defined(WIN32) || defined(__CYGWIN__)
784 #    define USE_RECV_BEFORE_SEND_WORKAROUND
785 #  endif
786 #else  /* DONT_USE_RECV_BEFORE_SEND_WORKAROUND */
787 #  ifdef USE_RECV_BEFORE_SEND_WORKAROUND
788 #    undef USE_RECV_BEFORE_SEND_WORKAROUND
789 #  endif
790 #endif /* DONT_USE_RECV_BEFORE_SEND_WORKAROUND */
791 
792 /* Detect Windows App environment which has a restricted access
793  * to the Win32 APIs. */
794 # if (defined(_WIN32_WINNT) && (_WIN32_WINNT >= 0x0602)) || \
795   defined(WINAPI_FAMILY)
796 #  include <winapifamily.h>
797 #  if WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_APP) &&  \
798      !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
799 #    define CURL_WINDOWS_APP
800 #  endif
801 # endif
802 
803 /* for systems that don't detect this in configure, use a sensible default */
804 #ifndef CURL_SA_FAMILY_T
805 #define CURL_SA_FAMILY_T unsigned short
806 #endif
807 
808 /* Some convenience macros to get the larger/smaller value out of two given.
809    We prefix with CURL to prevent name collisions. */
810 #define CURLMAX(x,y) ((x)>(y)?(x):(y))
811 #define CURLMIN(x,y) ((x)<(y)?(x):(y))
812 
813 /* Some versions of the Android SDK is missing the declaration */
814 #if defined(HAVE_GETPWUID_R) && defined(HAVE_DECL_GETPWUID_R_MISSING)
815 struct passwd;
816 int getpwuid_r(uid_t uid, struct passwd *pwd, char *buf,
817                size_t buflen, struct passwd **result);
818 #endif
819 
820 #ifdef DEBUGBUILD
821 #define UNITTEST
822 #else
823 #define UNITTEST static
824 #endif
825 
826 #endif /* HEADER_CURL_SETUP_H */
827