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ENH: import of new curl version
[cmake.git] / Utilities / cmcurl-7.19.0 / include / curl / typecheck-gcc.h
blobc317e5b0f3f2f38f919c7ec946c1b723462308ae
1 #ifndef __CURL_TYPECHECK_GCC_H
2 #define __CURL_TYPECHECK_GCC_H
3 /***************************************************************************
4 * _ _ ____ _
5 * Project ___| | | | _ \| |
6 * / __| | | | |_) | |
7 * | (__| |_| | _ <| |___
8 * \___|\___/|_| \_\_____|
9 *
10 * Copyright (C) 1998 - 2008, 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 http://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 * $Id: typecheck-gcc.h,v 1.1.1.1 2008-09-23 16:32:05 hoffman Exp $
24 ***************************************************************************/
25
26 /* wraps curl_easy_setopt() with typechecking */
27
28 /* To add a new kind of warning, add an
29 * if(_curl_is_sometype_option(_curl_opt) && ! _curl_is_sometype(value))
30 * _curl_easy_setopt_err_sometype();
31 * block and define _curl_is_sometype_option, _curl_is_sometype and
32 * _curl_easy_setopt_err_sometype below
33 *
34 * To add an option that uses the same type as an existing option, you'll just
35 * need to extend the appropriate _curl_*_option macro
36 */
37 #define curl_easy_setopt(handle, option, value) \
38 __extension__ ({ \
39 __typeof__ (option) _curl_opt = option; \
40 if (__builtin_constant_p(_curl_opt)) { \
41 if (_curl_is_long_option(_curl_opt) && !_curl_is_long(value)) \
42 _curl_easy_setopt_err_long(); \
43 if (_curl_is_off_t_option(_curl_opt) && !_curl_is_off_t(value)) \
44 _curl_easy_setopt_err_curl_off_t(); \
45 if (_curl_is_string_option(_curl_opt) && !_curl_is_string(value)) \
46 _curl_easy_setopt_err_string(); \
47 if (_curl_is_write_cb_option(_curl_opt) && !_curl_is_write_cb(value)) \
48 _curl_easy_setopt_err_write_callback(); \
49 if ((_curl_opt) == CURLOPT_READFUNCTION && !_curl_is_read_cb(value)) \
50 _curl_easy_setopt_err_read_cb(); \
51 if ((_curl_opt) == CURLOPT_IOCTLFUNCTION && !_curl_is_ioctl_cb(value)) \
52 _curl_easy_setopt_err_ioctl_cb(); \
53 if ((_curl_opt) == CURLOPT_SOCKOPTFUNCTION && !_curl_is_sockopt_cb(value))\
54 _curl_easy_setopt_err_sockopt_cb(); \
55 if ((_curl_opt) == CURLOPT_OPENSOCKETFUNCTION && \
56 !_curl_is_opensocket_cb(value)) \
57 _curl_easy_setopt_err_opensocket_cb(); \
58 if ((_curl_opt) == CURLOPT_PROGRESSFUNCTION && \
59 !_curl_is_progress_cb(value)) \
60 _curl_easy_setopt_err_progress_cb(); \
61 if ((_curl_opt) == CURLOPT_DEBUGFUNCTION && !_curl_is_debug_cb(value)) \
62 _curl_easy_setopt_err_debug_cb(); \
63 if ((_curl_opt) == CURLOPT_SSL_CTX_FUNCTION && \
64 !_curl_is_ssl_ctx_cb(value)) \
65 _curl_easy_setopt_err_ssl_ctx_cb(); \
66 if (_curl_is_conv_cb_option(_curl_opt) && !_curl_is_conv_cb(value)) \
67 _curl_easy_setopt_err_conv_cb(); \
68 if ((_curl_opt) == CURLOPT_SEEKFUNCTION && !_curl_is_seek_cb(value)) \
69 _curl_easy_setopt_err_seek_cb(); \
70 if (_curl_is_cb_data_option(_curl_opt) && !_curl_is_cb_data(value)) \
71 _curl_easy_setopt_err_cb_data(); \
72 if ((_curl_opt) == CURLOPT_ERRORBUFFER && !_curl_is_error_buffer(value)) \
73 _curl_easy_setopt_err_error_buffer(); \
74 if ((_curl_opt) == CURLOPT_STDERR && !_curl_is_FILE(value)) \
75 _curl_easy_setopt_err_FILE(); \
76 if (_curl_is_postfields_option(_curl_opt) && !_curl_is_postfields(value)) \
77 _curl_easy_setopt_err_postfields(); \
78 if ((_curl_opt) == CURLOPT_HTTPPOST && \
79 !_curl_is_arr((value), struct curl_httppost)) \
80 _curl_easy_setopt_err_curl_httpost(); \
81 if (_curl_is_slist_option(_curl_opt) && \
82 !_curl_is_arr((value), struct curl_slist)) \
83 _curl_easy_setopt_err_curl_slist(); \
84 if ((_curl_opt) == CURLOPT_SHARE && !_curl_is_ptr((value), CURLSH)) \
85 _curl_easy_setopt_err_CURLSH(); \
86 } \
87 curl_easy_setopt(handle, _curl_opt, value); \
88 })
89
90 /* wraps curl_easy_getinfo() with typechecking */
91 /* FIXME: don't allow const pointers */
92 #define curl_easy_getinfo(handle, info, arg) \
93 __extension__ ({ \
94 __typeof__ (info) _curl_info = info; \
95 if (__builtin_constant_p(_curl_info)) { \
96 if (_curl_is_string_info(_curl_info) && !_curl_is_arr((arg), char *)) \
97 _curl_easy_getinfo_err_string(); \
98 if (_curl_is_long_info(_curl_info) && !_curl_is_arr((arg), long)) \
99 _curl_easy_getinfo_err_long(); \
100 if (_curl_is_double_info(_curl_info) && !_curl_is_arr((arg), double)) \
101 _curl_easy_getinfo_err_double(); \
102 if (_curl_is_slist_info(_curl_info) && \
103 !_curl_is_arr((arg), struct curl_slist *)) \
104 _curl_easy_getinfo_err_curl_slist(); \
105 } \
106 curl_easy_getinfo(handle, _curl_info, arg); \
107 })
108
109 /* TODO: typechecking for curl_share_setopt() and curl_multi_setopt(),
110 * for now just make sure that the functions are called with three
111 * arguments
112 */
113 #define curl_share_setopt(share,opt,param) curl_share_setopt(share,opt,param)
114 #define curl_multi_setopt(handle,opt,param) curl_multi_setopt(handle,opt,param)
115
116
117 /* the actual warnings, triggered by calling the _curl_easy_setopt_err*
118 * functions */
119
120 /* To define a new warning, use _CURL_WARNING(identifier, "message") */
121 #define _CURL_WARNING(id, message) \
122 static void __attribute__((warning(message))) __attribute__((unused)) \
123 __attribute__((noinline)) id(void) { __asm__(""); }
124
125 _CURL_WARNING(_curl_easy_setopt_err_long,
126 "curl_easy_setopt expects a long argument for this option")
127 _CURL_WARNING(_curl_easy_setopt_err_curl_off_t,
128 "curl_easy_setopt expects a curl_off_t argument for this option")
129 _CURL_WARNING(_curl_easy_setopt_err_string,
130 "curl_easy_setopt expects a string (char* or char[]) argument for this option"
131 )
132 _CURL_WARNING(_curl_easy_setopt_err_write_callback,
133 "curl_easy_setopt expects a curl_write_callback argument for this option")
134 _CURL_WARNING(_curl_easy_setopt_err_read_cb,
135 "curl_easy_setopt expects a curl_read_callback argument for this option")
136 _CURL_WARNING(_curl_easy_setopt_err_ioctl_cb,
137 "curl_easy_setopt expects a curl_ioctl_callback argument for this option")
138 _CURL_WARNING(_curl_easy_setopt_err_sockopt_cb,
139 "curl_easy_setopt expects a curl_sockopt_callback argument for this option")
140 _CURL_WARNING(_curl_easy_setopt_err_opensocket_cb,
141 "curl_easy_setopt expects a curl_opensocket_callback argument for this option"
142 )
143 _CURL_WARNING(_curl_easy_setopt_err_progress_cb,
144 "curl_easy_setopt expects a curl_progress_callback argument for this option")
145 _CURL_WARNING(_curl_easy_setopt_err_debug_cb,
146 "curl_easy_setopt expects a curl_debug_callback argument for this option")
147 _CURL_WARNING(_curl_easy_setopt_err_ssl_ctx_cb,
148 "curl_easy_setopt expects a curl_ssl_ctx_callback argument for this option")
149 _CURL_WARNING(_curl_easy_setopt_err_conv_cb,
150 "curl_easy_setopt expects a curl_conv_callback argument for this option")
151 _CURL_WARNING(_curl_easy_setopt_err_seek_cb,
152 "curl_easy_setopt expects a curl_seek_callback argument for this option")
153 _CURL_WARNING(_curl_easy_setopt_err_cb_data,
154 "curl_easy_setopt expects a private data pointer as argument for this option")
155 _CURL_WARNING(_curl_easy_setopt_err_error_buffer,
156 "curl_easy_setopt expects a char buffer of CURL_ERROR_SIZE as argument for this option")
157 _CURL_WARNING(_curl_easy_setopt_err_FILE,
158 "curl_easy_setopt expects a FILE* argument for this option")
159 _CURL_WARNING(_curl_easy_setopt_err_postfields,
160 "curl_easy_setopt expects a void* or char* argument for this option")
161 _CURL_WARNING(_curl_easy_setopt_err_curl_httpost,
162 "curl_easy_setopt expects a struct curl_httppost* argument for this option")
163 _CURL_WARNING(_curl_easy_setopt_err_curl_slist,
164 "curl_easy_setopt expects a struct curl_slist* argument for this option")
165 _CURL_WARNING(_curl_easy_setopt_err_CURLSH,
166 "curl_easy_setopt expects a CURLSH* argument for this option")
167
168 _CURL_WARNING(_curl_easy_getinfo_err_string,
169 "curl_easy_getinfo expects a pointer to char * for this info")
170 _CURL_WARNING(_curl_easy_getinfo_err_long,
171 "curl_easy_getinfo expects a pointer to long for this info")
172 _CURL_WARNING(_curl_easy_getinfo_err_double,
173 "curl_easy_getinfo expects a pointer to double for this info")
174 _CURL_WARNING(_curl_easy_getinfo_err_curl_slist,
175 "curl_easy_getinfo expects a pointer to struct curl_slist * for this info")
176
177 /* groups of curl_easy_setops options that take the same type of argument */
178
179 /* To add a new option to one of the groups, just add
180 * (option) == CURLOPT_SOMETHING
181 * to the or-expression. If the option takes a long or curl_off_t, you don't
182 * have to do anything
183 */
184
185 /* evaluates to true if option takes a long argument */
186 #define _curl_is_long_option(option) \
187 (0 < (option) && (option) < CURLOPTTYPE_OBJECTPOINT)
188
189 #define _curl_is_off_t_option(option) \
190 ((option) > CURLOPTTYPE_OFF_T)
191
192 /* evaluates to true if option takes a char* argument */
193 #define _curl_is_string_option(option) \
194 ((option) == CURLOPT_URL || \
195 (option) == CURLOPT_PROXY || \
196 (option) == CURLOPT_INTERFACE || \
197 (option) == CURLOPT_NETRC_FILE || \
198 (option) == CURLOPT_USERPWD || \
199 (option) == CURLOPT_PROXYUSERPWD || \
200 (option) == CURLOPT_ENCODING || \
201 (option) == CURLOPT_REFERER || \
202 (option) == CURLOPT_USERAGENT || \
203 (option) == CURLOPT_COOKIE || \
204 (option) == CURLOPT_COOKIEFILE || \
205 (option) == CURLOPT_COOKIEJAR || \
206 (option) == CURLOPT_COOKIELIST || \
207 (option) == CURLOPT_FTPPORT || \
208 (option) == CURLOPT_FTP_ALTERNATIVE_TO_USER || \
209 (option) == CURLOPT_FTP_ACCOUNT || \
210 (option) == CURLOPT_RANGE || \
211 (option) == CURLOPT_CUSTOMREQUEST || \
212 (option) == CURLOPT_SSLCERT || \
213 (option) == CURLOPT_SSLCERTTYPE || \
214 (option) == CURLOPT_SSLKEY || \
215 (option) == CURLOPT_SSLKEYTYPE || \
216 (option) == CURLOPT_KEYPASSWD || \
217 (option) == CURLOPT_SSLENGINE || \
218 (option) == CURLOPT_CAINFO || \
219 (option) == CURLOPT_CAPATH || \
220 (option) == CURLOPT_RANDOM_FILE || \
221 (option) == CURLOPT_EGDSOCKET || \
222 (option) == CURLOPT_SSL_CIPHER_LIST || \
223 (option) == CURLOPT_KRBLEVEL || \
224 (option) == CURLOPT_SSH_HOST_PUBLIC_KEY_MD5 || \
225 (option) == CURLOPT_SSH_PUBLIC_KEYFILE || \
226 (option) == CURLOPT_SSH_PRIVATE_KEYFILE || \
227 (option) == CURLOPT_CRLFILE || \
228 (option) == CURLOPT_ISSUERCERT || \
229 0)
230
231 /* evaluates to true if option takes a curl_write_callback argument */
232 #define _curl_is_write_cb_option(option) \
233 ((option) == CURLOPT_HEADERFUNCTION || \
234 (option) == CURLOPT_WRITEFUNCTION)
235
236 /* evaluates to true if option takes a curl_conv_callback argument */
237 #define _curl_is_conv_cb_option(option) \
238 ((option) == CURLOPT_CONV_TO_NETWORK_FUNCTION || \
239 (option) == CURLOPT_CONV_FROM_NETWORK_FUNCTION || \
240 (option) == CURLOPT_CONV_FROM_UTF8_FUNCTION)
241
242 /* evaluates to true if option takes a data argument to pass to a callback */
243 #define _curl_is_cb_data_option(option) \
244 ((option) == CURLOPT_WRITEDATA || \
245 (option) == CURLOPT_READDATA || \
246 (option) == CURLOPT_IOCTLDATA || \
247 (option) == CURLOPT_SOCKOPTDATA || \
248 (option) == CURLOPT_OPENSOCKETDATA || \
249 (option) == CURLOPT_PROGRESSDATA || \
250 (option) == CURLOPT_WRITEHEADER || \
251 (option) == CURLOPT_DEBUGDATA || \
252 (option) == CURLOPT_SSL_CTX_DATA || \
253 (option) == CURLOPT_SEEKDATA || \
254 (option) == CURLOPT_PRIVATE || \
255 0)
256
257 /* evaluates to true if option takes a POST data argument (void* or char*) */
258 #define _curl_is_postfields_option(option) \
259 ((option) == CURLOPT_POSTFIELDS || \
260 (option) == CURLOPT_COPYPOSTFIELDS || \
261 0)
262
263 /* evaluates to true if option takes a struct curl_slist * argument */
264 #define _curl_is_slist_option(option) \
265 ((option) == CURLOPT_HTTPHEADER || \
266 (option) == CURLOPT_HTTP200ALIASES || \
267 (option) == CURLOPT_QUOTE || \
268 (option) == CURLOPT_POSTQUOTE || \
269 (option) == CURLOPT_PREQUOTE || \
270 (option) == CURLOPT_TELNETOPTIONS || \
271 0)
272
273 /* groups of curl_easy_getinfo infos that take the same type of argument */
274
275 /* evaluates to true if info expects a pointer to char * argument */
276 #define _curl_is_string_info(info) \
277 (CURLINFO_STRING < (info) && (info) < CURLINFO_LONG)
278
279 /* evaluates to true if info expects a pointer to long argument */
280 #define _curl_is_long_info(info) \
281 (CURLINFO_LONG < (info) && (info) < CURLINFO_DOUBLE)
282
283 /* evaluates to true if info expects a pointer to double argument */
284 #define _curl_is_double_info(info) \
285 (CURLINFO_DOUBLE < (info) && (info) < CURLINFO_SLIST)
286
287 /* true if info expects a pointer to struct curl_slist * argument */
288 #define _curl_is_slist_info(info) \
289 (CURLINFO_SLIST < (info))
290
291
292 /* typecheck helpers -- check whether given expression has requested type*/
293
294 /* For pointers, you can use the _curl_is_ptr/_curl_is_arr macros,
295 * otherwise define a new macro. Search for __builtin_types_compatible_p
296 * in the GCC manual.
297 * NOTE: these macros MUST NOT EVALUATE their arguments! The argument is
298 * the actual expression passed to the curl_easy_setopt macro. This
299 * means that you can only apply the sizeof and __typeof__ operators, no
300 * == or whatsoever.
301 */
302
303 /* XXX: should evaluate to true iff expr is a pointer */
304 #define _curl_is_any_ptr(expr) \
305 (sizeof(expr) == sizeof(void*))
306
307 /* evaluates to true if expr is NULL */
308 /* XXX: must not evaluate expr, so this check is not accurate */
309 #define _curl_is_NULL(expr) \
310 (__builtin_types_compatible_p(__typeof__(expr), __typeof__(NULL)))
311
312 /* evaluates to true if expr is type*, const type* or NULL */
313 #define _curl_is_ptr(expr, type) \
314 (_curl_is_NULL(expr) || \
315 __builtin_types_compatible_p(__typeof__(expr), type *) || \
316 __builtin_types_compatible_p(__typeof__(expr), const type *))
317
318 /* evaluates to true if expr is one of type[], type*, NULL or const type* */
319 #define _curl_is_arr(expr, type) \
320 (_curl_is_ptr((expr), type) || \
321 __builtin_types_compatible_p(__typeof__(expr), type []))
322
323 /* evaluates to true if expr is a string */
324 #define _curl_is_string(expr) \
325 (_curl_is_arr((expr), char) || \
326 _curl_is_arr((expr), signed char) || \
327 _curl_is_arr((expr), unsigned char))
328
329 /* evaluates to true if expr is a long (no matter the signedness)
330 * XXX: for now, int is also accepted (and therefore short and char, which
331 * are promoted to int when passed to a variadic function) */
332 #define _curl_is_long(expr) \
333 (__builtin_types_compatible_p(__typeof__(expr), long) || \
334 __builtin_types_compatible_p(__typeof__(expr), signed long) || \
335 __builtin_types_compatible_p(__typeof__(expr), unsigned long) || \
336 __builtin_types_compatible_p(__typeof__(expr), int) || \
337 __builtin_types_compatible_p(__typeof__(expr), signed int) || \
338 __builtin_types_compatible_p(__typeof__(expr), unsigned int) || \
339 __builtin_types_compatible_p(__typeof__(expr), short) || \
340 __builtin_types_compatible_p(__typeof__(expr), signed short) || \
341 __builtin_types_compatible_p(__typeof__(expr), unsigned short) || \
342 __builtin_types_compatible_p(__typeof__(expr), char) || \
343 __builtin_types_compatible_p(__typeof__(expr), signed char) || \
344 __builtin_types_compatible_p(__typeof__(expr), unsigned char))
345
346 /* evaluates to true if expr is of type curl_off_t */
347 #define _curl_is_off_t(expr) \
348 (__builtin_types_compatible_p(__typeof__(expr), curl_off_t))
349
350 /* evaluates to true if expr is abuffer suitable for CURLOPT_ERRORBUFFER */
351 /* XXX: also check size of an char[] array? */
352 #define _curl_is_error_buffer(expr) \
353 (__builtin_types_compatible_p(__typeof__(expr), char *) || \
354 __builtin_types_compatible_p(__typeof__(expr), char[]))
355
356 /* evaluates to true if expr is of type (const) void* or (const) FILE* */
357 #if 0
358 #define _curl_is_cb_data(expr) \
359 (_curl_is_ptr((expr), void) || \
360 _curl_is_ptr((expr), FILE))
361 #else /* be less strict */
362 #define _curl_is_cb_data(expr) \
363 _curl_is_any_ptr(expr)
364 #endif
365
366 /* evaluates to true if expr is of type FILE* */
367 #define _curl_is_FILE(expr) \
368 (__builtin_types_compatible_p(__typeof__(expr), FILE *))
369
370 /* evaluates to true if expr can be passed as POST data (void* or char*) */
371 #define _curl_is_postfields(expr) \
372 (_curl_is_ptr((expr), void) || \
373 _curl_is_arr((expr), char))
374
375 /* FIXME: the whole callback checking is messy...
376 * The idea is to tolerate char vs. void and const vs. not const
377 * pointers in arguments at least
378 */
379 /* helper: __builtin_types_compatible_p distinguishes between functions and
380 * function pointers, hide it */
381 #define _curl_callback_compatible(func, type) \
382 (__builtin_types_compatible_p(__typeof__(func), type) || \
383 __builtin_types_compatible_p(__typeof__(func), type*))
384
385 /* evaluates to true if expr is of type curl_read_callback or "similar" */
386 #define _curl_is_read_cb(expr) \
387 (_curl_is_NULL(expr) || \
388 __builtin_types_compatible_p(__typeof__(expr), __typeof__(fread)) || \
389 __builtin_types_compatible_p(__typeof__(expr), curl_read_callback) || \
390 _curl_callback_compatible((expr), _curl_read_callback1) || \
391 _curl_callback_compatible((expr), _curl_read_callback2) || \
392 _curl_callback_compatible((expr), _curl_read_callback3) || \
393 _curl_callback_compatible((expr), _curl_read_callback4) || \
394 _curl_callback_compatible((expr), _curl_read_callback5) || \
395 _curl_callback_compatible((expr), _curl_read_callback6))
396 typedef size_t (_curl_read_callback1)(char *, size_t, size_t, void*);
397 typedef size_t (_curl_read_callback2)(char *, size_t, size_t, const void*);
398 typedef size_t (_curl_read_callback3)(char *, size_t, size_t, FILE*);
399 typedef size_t (_curl_read_callback4)(void *, size_t, size_t, void*);
400 typedef size_t (_curl_read_callback5)(void *, size_t, size_t, const void*);
401 typedef size_t (_curl_read_callback6)(void *, size_t, size_t, FILE*);
402
403 /* evaluates to true if expr is of type curl_write_callback or "similar" */
404 #define _curl_is_write_cb(expr) \
405 (_curl_is_read_cb(expr) || \
406 __builtin_types_compatible_p(__typeof__(expr), __typeof__(fwrite)) || \
407 __builtin_types_compatible_p(__typeof__(expr), curl_write_callback) || \
408 _curl_callback_compatible((expr), _curl_write_callback1) || \
409 _curl_callback_compatible((expr), _curl_write_callback2) || \
410 _curl_callback_compatible((expr), _curl_write_callback3) || \
411 _curl_callback_compatible((expr), _curl_write_callback4) || \
412 _curl_callback_compatible((expr), _curl_write_callback5) || \
413 _curl_callback_compatible((expr), _curl_write_callback6))
414 typedef size_t (_curl_write_callback1)(const char *, size_t, size_t, void*);
415 typedef size_t (_curl_write_callback2)(const char *, size_t, size_t,
416 const void*);
417 typedef size_t (_curl_write_callback3)(const char *, size_t, size_t, FILE*);
418 typedef size_t (_curl_write_callback4)(const void *, size_t, size_t, void*);
419 typedef size_t (_curl_write_callback5)(const void *, size_t, size_t,
420 const void*);
421 typedef size_t (_curl_write_callback6)(const void *, size_t, size_t, FILE*);
422
423 /* evaluates to true if expr is of type curl_ioctl_callback or "similar" */
424 #define _curl_is_ioctl_cb(expr) \
425 (_curl_is_NULL(expr) || \
426 __builtin_types_compatible_p(__typeof__(expr), curl_ioctl_callback) || \
427 _curl_callback_compatible((expr), _curl_ioctl_callback1) || \
428 _curl_callback_compatible((expr), _curl_ioctl_callback2) || \
429 _curl_callback_compatible((expr), _curl_ioctl_callback3) || \
430 _curl_callback_compatible((expr), _curl_ioctl_callback4))
431 typedef curlioerr (_curl_ioctl_callback1)(CURL *, int, void*);
432 typedef curlioerr (_curl_ioctl_callback2)(CURL *, int, const void*);
433 typedef curlioerr (_curl_ioctl_callback3)(CURL *, curliocmd, void*);
434 typedef curlioerr (_curl_ioctl_callback4)(CURL *, curliocmd, const void*);
435
436 /* evaluates to true if expr is of type curl_sockopt_callback or "similar" */
437 #define _curl_is_sockopt_cb(expr) \
438 (_curl_is_NULL(expr) || \
439 __builtin_types_compatible_p(__typeof__(expr), curl_sockopt_callback) || \
440 _curl_callback_compatible((expr), _curl_sockopt_callback1) || \
441 _curl_callback_compatible((expr), _curl_sockopt_callback2))
442 typedef int (_curl_sockopt_callback1)(void *, curl_socket_t, curlsocktype);
443 typedef int (_curl_sockopt_callback2)(const void *, curl_socket_t,
444 curlsocktype);
445
446 /* evaluates to true if expr is of type curl_opensocket_callback or "similar" */
447 #define _curl_is_opensocket_cb(expr) \
448 (_curl_is_NULL(expr) || \
449 __builtin_types_compatible_p(__typeof__(expr), curl_opensocket_callback) ||\
450 _curl_callback_compatible((expr), _curl_opensocket_callback1) || \
451 _curl_callback_compatible((expr), _curl_opensocket_callback2) || \
452 _curl_callback_compatible((expr), _curl_opensocket_callback3) || \
453 _curl_callback_compatible((expr), _curl_opensocket_callback4))
454 typedef curl_socket_t (_curl_opensocket_callback1)
455 (void *, curlsocktype, struct curl_sockaddr *);
456 typedef curl_socket_t (_curl_opensocket_callback2)
457 (void *, curlsocktype, const struct curl_sockaddr *);
458 typedef curl_socket_t (_curl_opensocket_callback3)
459 (const void *, curlsocktype, struct curl_sockaddr *);
460 typedef curl_socket_t (_curl_opensocket_callback4)
461 (const void *, curlsocktype, const struct curl_sockaddr *);
462
463 /* evaluates to true if expr is of type curl_progress_callback or "similar" */
464 #define _curl_is_progress_cb(expr) \
465 (_curl_is_NULL(expr) || \
466 __builtin_types_compatible_p(__typeof__(expr), curl_progress_callback) || \
467 _curl_callback_compatible((expr), _curl_progress_callback1) || \
468 _curl_callback_compatible((expr), _curl_progress_callback2))
469 typedef int (_curl_progress_callback1)(void *,
470 double, double, double, double);
471 typedef int (_curl_progress_callback2)(const void *,
472 double, double, double, double);
473
474 /* evaluates to true if expr is of type curl_debug_callback or "similar" */
475 #define _curl_is_debug_cb(expr) \
476 (_curl_is_NULL(expr) || \
477 __builtin_types_compatible_p(__typeof__(expr), curl_debug_callback) || \
478 _curl_callback_compatible((expr), _curl_debug_callback1) || \
479 _curl_callback_compatible((expr), _curl_debug_callback2) || \
480 _curl_callback_compatible((expr), _curl_debug_callback3) || \
481 _curl_callback_compatible((expr), _curl_debug_callback4))
482 typedef int (_curl_debug_callback1) (CURL *,
483 curl_infotype, char *, size_t, void *);
484 typedef int (_curl_debug_callback2) (CURL *,
485 curl_infotype, char *, size_t, const void *);
486 typedef int (_curl_debug_callback3) (CURL *,
487 curl_infotype, const char *, size_t, void *);
488 typedef int (_curl_debug_callback4) (CURL *,
489 curl_infotype, const char *, size_t, const void *);
490
491 /* evaluates to true if expr is of type curl_ssl_ctx_callback or "similar" */
492 /* this is getting even messier... */
493 #define _curl_is_ssl_ctx_cb(expr) \
494 (_curl_is_NULL(expr) || \
495 __builtin_types_compatible_p(__typeof__(expr), curl_ssl_ctx_callback) || \
496 _curl_callback_compatible((expr), _curl_ssl_ctx_callback1) || \
497 _curl_callback_compatible((expr), _curl_ssl_ctx_callback2) || \
498 _curl_callback_compatible((expr), _curl_ssl_ctx_callback3) || \
499 _curl_callback_compatible((expr), _curl_ssl_ctx_callback4) || \
500 _curl_callback_compatible((expr), _curl_ssl_ctx_callback5) || \
501 _curl_callback_compatible((expr), _curl_ssl_ctx_callback6) || \
502 _curl_callback_compatible((expr), _curl_ssl_ctx_callback7) || \
503 _curl_callback_compatible((expr), _curl_ssl_ctx_callback8))
504 typedef CURLcode (_curl_ssl_ctx_callback1)(CURL *, void *, void *);
505 typedef CURLcode (_curl_ssl_ctx_callback2)(CURL *, void *, const void *);
506 typedef CURLcode (_curl_ssl_ctx_callback3)(CURL *, const void *, void *);
507 typedef CURLcode (_curl_ssl_ctx_callback4)(CURL *, const void *, const void *);
508 #ifdef HEADER_SSL_H
509 /* hack: if we included OpenSSL's ssl.h, we know about SSL_CTX
510 * this will of course break if we're included before OpenSSL headers...
511 */
512 typedef CURLcode (_curl_ssl_ctx_callback5)(CURL *, SSL_CTX, void *);
513 typedef CURLcode (_curl_ssl_ctx_callback6)(CURL *, SSL_CTX, const void *);
514 typedef CURLcode (_curl_ssl_ctx_callback7)(CURL *, const SSL_CTX, void *);
515 typedef CURLcode (_curl_ssl_ctx_callback8)(CURL *, const SSL_CTX, const void *);
516 #else
517 typedef _curl_ssl_ctx_callback1 _curl_ssl_ctx_callback5;
518 typedef _curl_ssl_ctx_callback1 _curl_ssl_ctx_callback6;
519 typedef _curl_ssl_ctx_callback1 _curl_ssl_ctx_callback7;
520 typedef _curl_ssl_ctx_callback1 _curl_ssl_ctx_callback8;
521 #endif
522
523 /* evaluates to true if expr is of type curl_conv_callback or "similar" */
524 #define _curl_is_conv_cb(expr) \
525 (_curl_is_NULL(expr) || \
526 __builtin_types_compatible_p(__typeof__(expr), curl_conv_callback) || \
527 _curl_callback_compatible((expr), _curl_conv_callback1) || \
528 _curl_callback_compatible((expr), _curl_conv_callback2) || \
529 _curl_callback_compatible((expr), _curl_conv_callback3) || \
530 _curl_callback_compatible((expr), _curl_conv_callback4))
531 typedef CURLcode (*_curl_conv_callback1)(char *, size_t length);
532 typedef CURLcode (*_curl_conv_callback2)(const char *, size_t length);
533 typedef CURLcode (*_curl_conv_callback3)(void *, size_t length);
534 typedef CURLcode (*_curl_conv_callback4)(const void *, size_t length);
535
536 /* evaluates to true if expr is of type curl_seek_callback or "similar" */
537 #define _curl_is_seek_cb(expr) \
538 (_curl_is_NULL(expr) || \
539 __builtin_types_compatible_p(__typeof__(expr), curl_seek_callback) || \
540 _curl_callback_compatible((expr), _curl_seek_callback1) || \
541 _curl_callback_compatible((expr), _curl_seek_callback2))
542 typedef CURLcode (*_curl_seek_callback1)(void *, curl_off_t, int);
543 typedef CURLcode (*_curl_seek_callback2)(const void *, curl_off_t, int);
544
545
546 #endif /* __CURL_TYPECHECK_GCC_H */
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