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Install curl-7.25.0.tar.bz2
[msysgit.git] / mingw / include / curl / typecheck-gcc.h
blob5c584b00272ad157573aa6c7842a0d1ea41b366e
1 #ifndef __CURL_TYPECHECK_GCC_H
2 #define __CURL_TYPECHECK_GCC_H
3 /***************************************************************************
4 * _ _ ____ _
5 * Project ___| | | | _ \| |
6 * / __| | | | |_) | |
7 * | (__| |_| | _ <| |___
8 * \___|\___/|_| \_\_____|
9 *
10 * Copyright (C) 1998 - 2011, 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 ***************************************************************************/
24
25 /* wraps curl_easy_setopt() with typechecking */
26
27 /* To add a new kind of warning, add an
28 * if(_curl_is_sometype_option(_curl_opt))
29 * if(!_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 * NOTE: We use two nested 'if' statements here instead of the && operator, in
35 * order to work around gcc bug #32061. It affects only gcc 4.3.x/4.4.x
36 * when compiling with -Wlogical-op.
37 *
38 * To add an option that uses the same type as an existing option, you'll just
39 * need to extend the appropriate _curl_*_option macro
40 */
41 #define curl_easy_setopt(handle, option, value) \
42 __extension__ ({ \
43 __typeof__ (option) _curl_opt = option; \
44 if(__builtin_constant_p(_curl_opt)) { \
45 if(_curl_is_long_option(_curl_opt)) \
46 if(!_curl_is_long(value)) \
47 _curl_easy_setopt_err_long(); \
48 if(_curl_is_off_t_option(_curl_opt)) \
49 if(!_curl_is_off_t(value)) \
50 _curl_easy_setopt_err_curl_off_t(); \
51 if(_curl_is_string_option(_curl_opt)) \
52 if(!_curl_is_string(value)) \
53 _curl_easy_setopt_err_string(); \
54 if(_curl_is_write_cb_option(_curl_opt)) \
55 if(!_curl_is_write_cb(value)) \
56 _curl_easy_setopt_err_write_callback(); \
57 if((_curl_opt) == CURLOPT_READFUNCTION) \
58 if(!_curl_is_read_cb(value)) \
59 _curl_easy_setopt_err_read_cb(); \
60 if((_curl_opt) == CURLOPT_IOCTLFUNCTION) \
61 if(!_curl_is_ioctl_cb(value)) \
62 _curl_easy_setopt_err_ioctl_cb(); \
63 if((_curl_opt) == CURLOPT_SOCKOPTFUNCTION) \
64 if(!_curl_is_sockopt_cb(value)) \
65 _curl_easy_setopt_err_sockopt_cb(); \
66 if((_curl_opt) == CURLOPT_OPENSOCKETFUNCTION) \
67 if(!_curl_is_opensocket_cb(value)) \
68 _curl_easy_setopt_err_opensocket_cb(); \
69 if((_curl_opt) == CURLOPT_PROGRESSFUNCTION) \
70 if(!_curl_is_progress_cb(value)) \
71 _curl_easy_setopt_err_progress_cb(); \
72 if((_curl_opt) == CURLOPT_DEBUGFUNCTION) \
73 if(!_curl_is_debug_cb(value)) \
74 _curl_easy_setopt_err_debug_cb(); \
75 if((_curl_opt) == CURLOPT_SSL_CTX_FUNCTION) \
76 if(!_curl_is_ssl_ctx_cb(value)) \
77 _curl_easy_setopt_err_ssl_ctx_cb(); \
78 if(_curl_is_conv_cb_option(_curl_opt)) \
79 if(!_curl_is_conv_cb(value)) \
80 _curl_easy_setopt_err_conv_cb(); \
81 if((_curl_opt) == CURLOPT_SEEKFUNCTION) \
82 if(!_curl_is_seek_cb(value)) \
83 _curl_easy_setopt_err_seek_cb(); \
84 if(_curl_is_cb_data_option(_curl_opt)) \
85 if(!_curl_is_cb_data(value)) \
86 _curl_easy_setopt_err_cb_data(); \
87 if((_curl_opt) == CURLOPT_ERRORBUFFER) \
88 if(!_curl_is_error_buffer(value)) \
89 _curl_easy_setopt_err_error_buffer(); \
90 if((_curl_opt) == CURLOPT_STDERR) \
91 if(!_curl_is_FILE(value)) \
92 _curl_easy_setopt_err_FILE(); \
93 if(_curl_is_postfields_option(_curl_opt)) \
94 if(!_curl_is_postfields(value)) \
95 _curl_easy_setopt_err_postfields(); \
96 if((_curl_opt) == CURLOPT_HTTPPOST) \
97 if(!_curl_is_arr((value), struct curl_httppost)) \
98 _curl_easy_setopt_err_curl_httpost(); \
99 if(_curl_is_slist_option(_curl_opt)) \
100 if(!_curl_is_arr((value), struct curl_slist)) \
101 _curl_easy_setopt_err_curl_slist(); \
102 if((_curl_opt) == CURLOPT_SHARE) \
103 if(!_curl_is_ptr((value), CURLSH)) \
104 _curl_easy_setopt_err_CURLSH(); \
105 } \
106 curl_easy_setopt(handle, _curl_opt, value); \
107 })
108
109 /* wraps curl_easy_getinfo() with typechecking */
110 /* FIXME: don't allow const pointers */
111 #define curl_easy_getinfo(handle, info, arg) \
112 __extension__ ({ \
113 __typeof__ (info) _curl_info = info; \
114 if(__builtin_constant_p(_curl_info)) { \
115 if(_curl_is_string_info(_curl_info)) \
116 if(!_curl_is_arr((arg), char *)) \
117 _curl_easy_getinfo_err_string(); \
118 if(_curl_is_long_info(_curl_info)) \
119 if(!_curl_is_arr((arg), long)) \
120 _curl_easy_getinfo_err_long(); \
121 if(_curl_is_double_info(_curl_info)) \
122 if(!_curl_is_arr((arg), double)) \
123 _curl_easy_getinfo_err_double(); \
124 if(_curl_is_slist_info(_curl_info)) \
125 if(!_curl_is_arr((arg), struct curl_slist *)) \
126 _curl_easy_getinfo_err_curl_slist(); \
127 } \
128 curl_easy_getinfo(handle, _curl_info, arg); \
129 })
130
131 /* TODO: typechecking for curl_share_setopt() and curl_multi_setopt(),
132 * for now just make sure that the functions are called with three
133 * arguments
134 */
135 #define curl_share_setopt(share,opt,param) curl_share_setopt(share,opt,param)
136 #define curl_multi_setopt(handle,opt,param) curl_multi_setopt(handle,opt,param)
137
138
139 /* the actual warnings, triggered by calling the _curl_easy_setopt_err*
140 * functions */
141
142 /* To define a new warning, use _CURL_WARNING(identifier, "message") */
143 #define _CURL_WARNING(id, message) \
144 static void __attribute__((warning(message))) __attribute__((unused)) \
145 __attribute__((noinline)) id(void) { __asm__(""); }
146
147 _CURL_WARNING(_curl_easy_setopt_err_long,
148 "curl_easy_setopt expects a long argument for this option")
149 _CURL_WARNING(_curl_easy_setopt_err_curl_off_t,
150 "curl_easy_setopt expects a curl_off_t argument for this option")
151 _CURL_WARNING(_curl_easy_setopt_err_string,
152 "curl_easy_setopt expects a "
153 "string (char* or char[]) argument for this option"
154 )
155 _CURL_WARNING(_curl_easy_setopt_err_write_callback,
156 "curl_easy_setopt expects a curl_write_callback argument for this option")
157 _CURL_WARNING(_curl_easy_setopt_err_read_cb,
158 "curl_easy_setopt expects a curl_read_callback argument for this option")
159 _CURL_WARNING(_curl_easy_setopt_err_ioctl_cb,
160 "curl_easy_setopt expects a curl_ioctl_callback argument for this option")
161 _CURL_WARNING(_curl_easy_setopt_err_sockopt_cb,
162 "curl_easy_setopt expects a curl_sockopt_callback argument for this option")
163 _CURL_WARNING(_curl_easy_setopt_err_opensocket_cb,
164 "curl_easy_setopt expects a "
165 "curl_opensocket_callback argument for this option"
166 )
167 _CURL_WARNING(_curl_easy_setopt_err_progress_cb,
168 "curl_easy_setopt expects a curl_progress_callback argument for this option")
169 _CURL_WARNING(_curl_easy_setopt_err_debug_cb,
170 "curl_easy_setopt expects a curl_debug_callback argument for this option")
171 _CURL_WARNING(_curl_easy_setopt_err_ssl_ctx_cb,
172 "curl_easy_setopt expects a curl_ssl_ctx_callback argument for this option")
173 _CURL_WARNING(_curl_easy_setopt_err_conv_cb,
174 "curl_easy_setopt expects a curl_conv_callback argument for this option")
175 _CURL_WARNING(_curl_easy_setopt_err_seek_cb,
176 "curl_easy_setopt expects a curl_seek_callback argument for this option")
177 _CURL_WARNING(_curl_easy_setopt_err_cb_data,
178 "curl_easy_setopt expects a "
179 "private data pointer as argument for this option")
180 _CURL_WARNING(_curl_easy_setopt_err_error_buffer,
181 "curl_easy_setopt expects a "
182 "char buffer of CURL_ERROR_SIZE as argument for this option")
183 _CURL_WARNING(_curl_easy_setopt_err_FILE,
184 "curl_easy_setopt expects a FILE* argument for this option")
185 _CURL_WARNING(_curl_easy_setopt_err_postfields,
186 "curl_easy_setopt expects a void* or char* argument for this option")
187 _CURL_WARNING(_curl_easy_setopt_err_curl_httpost,
188 "curl_easy_setopt expects a struct curl_httppost* argument for this option")
189 _CURL_WARNING(_curl_easy_setopt_err_curl_slist,
190 "curl_easy_setopt expects a struct curl_slist* argument for this option")
191 _CURL_WARNING(_curl_easy_setopt_err_CURLSH,
192 "curl_easy_setopt expects a CURLSH* argument for this option")
193
194 _CURL_WARNING(_curl_easy_getinfo_err_string,
195 "curl_easy_getinfo expects a pointer to char * for this info")
196 _CURL_WARNING(_curl_easy_getinfo_err_long,
197 "curl_easy_getinfo expects a pointer to long for this info")
198 _CURL_WARNING(_curl_easy_getinfo_err_double,
199 "curl_easy_getinfo expects a pointer to double for this info")
200 _CURL_WARNING(_curl_easy_getinfo_err_curl_slist,
201 "curl_easy_getinfo expects a pointer to struct curl_slist * for this info")
202
203 /* groups of curl_easy_setops options that take the same type of argument */
204
205 /* To add a new option to one of the groups, just add
206 * (option) == CURLOPT_SOMETHING
207 * to the or-expression. If the option takes a long or curl_off_t, you don't
208 * have to do anything
209 */
210
211 /* evaluates to true if option takes a long argument */
212 #define _curl_is_long_option(option) \
213 (0 < (option) && (option) < CURLOPTTYPE_OBJECTPOINT)
214
215 #define _curl_is_off_t_option(option) \
216 ((option) > CURLOPTTYPE_OFF_T)
217
218 /* evaluates to true if option takes a char* argument */
219 #define _curl_is_string_option(option) \
220 ((option) == CURLOPT_URL || \
221 (option) == CURLOPT_PROXY || \
222 (option) == CURLOPT_INTERFACE || \
223 (option) == CURLOPT_NETRC_FILE || \
224 (option) == CURLOPT_USERPWD || \
225 (option) == CURLOPT_USERNAME || \
226 (option) == CURLOPT_PASSWORD || \
227 (option) == CURLOPT_PROXYUSERPWD || \
228 (option) == CURLOPT_PROXYUSERNAME || \
229 (option) == CURLOPT_PROXYPASSWORD || \
230 (option) == CURLOPT_NOPROXY || \
231 (option) == CURLOPT_ACCEPT_ENCODING || \
232 (option) == CURLOPT_REFERER || \
233 (option) == CURLOPT_USERAGENT || \
234 (option) == CURLOPT_COOKIE || \
235 (option) == CURLOPT_COOKIEFILE || \
236 (option) == CURLOPT_COOKIEJAR || \
237 (option) == CURLOPT_COOKIELIST || \
238 (option) == CURLOPT_FTPPORT || \
239 (option) == CURLOPT_FTP_ALTERNATIVE_TO_USER || \
240 (option) == CURLOPT_FTP_ACCOUNT || \
241 (option) == CURLOPT_RANGE || \
242 (option) == CURLOPT_CUSTOMREQUEST || \
243 (option) == CURLOPT_SSLCERT || \
244 (option) == CURLOPT_SSLCERTTYPE || \
245 (option) == CURLOPT_SSLKEY || \
246 (option) == CURLOPT_SSLKEYTYPE || \
247 (option) == CURLOPT_KEYPASSWD || \
248 (option) == CURLOPT_SSLENGINE || \
249 (option) == CURLOPT_CAINFO || \
250 (option) == CURLOPT_CAPATH || \
251 (option) == CURLOPT_RANDOM_FILE || \
252 (option) == CURLOPT_EGDSOCKET || \
253 (option) == CURLOPT_SSL_CIPHER_LIST || \
254 (option) == CURLOPT_KRBLEVEL || \
255 (option) == CURLOPT_SSH_HOST_PUBLIC_KEY_MD5 || \
256 (option) == CURLOPT_SSH_PUBLIC_KEYFILE || \
257 (option) == CURLOPT_SSH_PRIVATE_KEYFILE || \
258 (option) == CURLOPT_CRLFILE || \
259 (option) == CURLOPT_ISSUERCERT || \
260 (option) == CURLOPT_SOCKS5_GSSAPI_SERVICE || \
261 (option) == CURLOPT_SSH_KNOWNHOSTS || \
262 (option) == CURLOPT_MAIL_FROM || \
263 (option) == CURLOPT_RTSP_SESSION_ID || \
264 (option) == CURLOPT_RTSP_STREAM_URI || \
265 (option) == CURLOPT_RTSP_TRANSPORT || \
266 0)
267
268 /* evaluates to true if option takes a curl_write_callback argument */
269 #define _curl_is_write_cb_option(option) \
270 ((option) == CURLOPT_HEADERFUNCTION || \
271 (option) == CURLOPT_WRITEFUNCTION)
272
273 /* evaluates to true if option takes a curl_conv_callback argument */
274 #define _curl_is_conv_cb_option(option) \
275 ((option) == CURLOPT_CONV_TO_NETWORK_FUNCTION || \
276 (option) == CURLOPT_CONV_FROM_NETWORK_FUNCTION || \
277 (option) == CURLOPT_CONV_FROM_UTF8_FUNCTION)
278
279 /* evaluates to true if option takes a data argument to pass to a callback */
280 #define _curl_is_cb_data_option(option) \
281 ((option) == CURLOPT_WRITEDATA || \
282 (option) == CURLOPT_READDATA || \
283 (option) == CURLOPT_IOCTLDATA || \
284 (option) == CURLOPT_SOCKOPTDATA || \
285 (option) == CURLOPT_OPENSOCKETDATA || \
286 (option) == CURLOPT_PROGRESSDATA || \
287 (option) == CURLOPT_WRITEHEADER || \
288 (option) == CURLOPT_DEBUGDATA || \
289 (option) == CURLOPT_SSL_CTX_DATA || \
290 (option) == CURLOPT_SEEKDATA || \
291 (option) == CURLOPT_PRIVATE || \
292 (option) == CURLOPT_SSH_KEYDATA || \
293 (option) == CURLOPT_INTERLEAVEDATA || \
294 (option) == CURLOPT_CHUNK_DATA || \
295 (option) == CURLOPT_FNMATCH_DATA || \
296 0)
297
298 /* evaluates to true if option takes a POST data argument (void* or char*) */
299 #define _curl_is_postfields_option(option) \
300 ((option) == CURLOPT_POSTFIELDS || \
301 (option) == CURLOPT_COPYPOSTFIELDS || \
302 0)
303
304 /* evaluates to true if option takes a struct curl_slist * argument */
305 #define _curl_is_slist_option(option) \
306 ((option) == CURLOPT_HTTPHEADER || \
307 (option) == CURLOPT_HTTP200ALIASES || \
308 (option) == CURLOPT_QUOTE || \
309 (option) == CURLOPT_POSTQUOTE || \
310 (option) == CURLOPT_PREQUOTE || \
311 (option) == CURLOPT_TELNETOPTIONS || \
312 (option) == CURLOPT_MAIL_RCPT || \
313 0)
314
315 /* groups of curl_easy_getinfo infos that take the same type of argument */
316
317 /* evaluates to true if info expects a pointer to char * argument */
318 #define _curl_is_string_info(info) \
319 (CURLINFO_STRING < (info) && (info) < CURLINFO_LONG)
320
321 /* evaluates to true if info expects a pointer to long argument */
322 #define _curl_is_long_info(info) \
323 (CURLINFO_LONG < (info) && (info) < CURLINFO_DOUBLE)
324
325 /* evaluates to true if info expects a pointer to double argument */
326 #define _curl_is_double_info(info) \
327 (CURLINFO_DOUBLE < (info) && (info) < CURLINFO_SLIST)
328
329 /* true if info expects a pointer to struct curl_slist * argument */
330 #define _curl_is_slist_info(info) \
331 (CURLINFO_SLIST < (info))
332
333
334 /* typecheck helpers -- check whether given expression has requested type*/
335
336 /* For pointers, you can use the _curl_is_ptr/_curl_is_arr macros,
337 * otherwise define a new macro. Search for __builtin_types_compatible_p
338 * in the GCC manual.
339 * NOTE: these macros MUST NOT EVALUATE their arguments! The argument is
340 * the actual expression passed to the curl_easy_setopt macro. This
341 * means that you can only apply the sizeof and __typeof__ operators, no
342 * == or whatsoever.
343 */
344
345 /* XXX: should evaluate to true iff expr is a pointer */
346 #define _curl_is_any_ptr(expr) \
347 (sizeof(expr) == sizeof(void*))
348
349 /* evaluates to true if expr is NULL */
350 /* XXX: must not evaluate expr, so this check is not accurate */
351 #define _curl_is_NULL(expr) \
352 (__builtin_types_compatible_p(__typeof__(expr), __typeof__(NULL)))
353
354 /* evaluates to true if expr is type*, const type* or NULL */
355 #define _curl_is_ptr(expr, type) \
356 (_curl_is_NULL(expr) || \
357 __builtin_types_compatible_p(__typeof__(expr), type *) || \
358 __builtin_types_compatible_p(__typeof__(expr), const type *))
359
360 /* evaluates to true if expr is one of type[], type*, NULL or const type* */
361 #define _curl_is_arr(expr, type) \
362 (_curl_is_ptr((expr), type) || \
363 __builtin_types_compatible_p(__typeof__(expr), type []))
364
365 /* evaluates to true if expr is a string */
366 #define _curl_is_string(expr) \
367 (_curl_is_arr((expr), char) || \
368 _curl_is_arr((expr), signed char) || \
369 _curl_is_arr((expr), unsigned char))
370
371 /* evaluates to true if expr is a long (no matter the signedness)
372 * XXX: for now, int is also accepted (and therefore short and char, which
373 * are promoted to int when passed to a variadic function) */
374 #define _curl_is_long(expr) \
375 (__builtin_types_compatible_p(__typeof__(expr), long) || \
376 __builtin_types_compatible_p(__typeof__(expr), signed long) || \
377 __builtin_types_compatible_p(__typeof__(expr), unsigned long) || \
378 __builtin_types_compatible_p(__typeof__(expr), int) || \
379 __builtin_types_compatible_p(__typeof__(expr), signed int) || \
380 __builtin_types_compatible_p(__typeof__(expr), unsigned int) || \
381 __builtin_types_compatible_p(__typeof__(expr), short) || \
382 __builtin_types_compatible_p(__typeof__(expr), signed short) || \
383 __builtin_types_compatible_p(__typeof__(expr), unsigned short) || \
384 __builtin_types_compatible_p(__typeof__(expr), char) || \
385 __builtin_types_compatible_p(__typeof__(expr), signed char) || \
386 __builtin_types_compatible_p(__typeof__(expr), unsigned char))
387
388 /* evaluates to true if expr is of type curl_off_t */
389 #define _curl_is_off_t(expr) \
390 (__builtin_types_compatible_p(__typeof__(expr), curl_off_t))
391
392 /* evaluates to true if expr is abuffer suitable for CURLOPT_ERRORBUFFER */
393 /* XXX: also check size of an char[] array? */
394 #define _curl_is_error_buffer(expr) \
395 (_curl_is_NULL(expr) || \
396 __builtin_types_compatible_p(__typeof__(expr), char *) || \
397 __builtin_types_compatible_p(__typeof__(expr), char[]))
398
399 /* evaluates to true if expr is of type (const) void* or (const) FILE* */
400 #if 0
401 #define _curl_is_cb_data(expr) \
402 (_curl_is_ptr((expr), void) || \
403 _curl_is_ptr((expr), FILE))
404 #else /* be less strict */
405 #define _curl_is_cb_data(expr) \
406 _curl_is_any_ptr(expr)
407 #endif
408
409 /* evaluates to true if expr is of type FILE* */
410 #define _curl_is_FILE(expr) \
411 (__builtin_types_compatible_p(__typeof__(expr), FILE *))
412
413 /* evaluates to true if expr can be passed as POST data (void* or char*) */
414 #define _curl_is_postfields(expr) \
415 (_curl_is_ptr((expr), void) || \
416 _curl_is_arr((expr), char))
417
418 /* FIXME: the whole callback checking is messy...
419 * The idea is to tolerate char vs. void and const vs. not const
420 * pointers in arguments at least
421 */
422 /* helper: __builtin_types_compatible_p distinguishes between functions and
423 * function pointers, hide it */
424 #define _curl_callback_compatible(func, type) \
425 (__builtin_types_compatible_p(__typeof__(func), type) || \
426 __builtin_types_compatible_p(__typeof__(func), type*))
427
428 /* evaluates to true if expr is of type curl_read_callback or "similar" */
429 #define _curl_is_read_cb(expr) \
430 (_curl_is_NULL(expr) || \
431 __builtin_types_compatible_p(__typeof__(expr), __typeof__(fread)) || \
432 __builtin_types_compatible_p(__typeof__(expr), curl_read_callback) || \
433 _curl_callback_compatible((expr), _curl_read_callback1) || \
434 _curl_callback_compatible((expr), _curl_read_callback2) || \
435 _curl_callback_compatible((expr), _curl_read_callback3) || \
436 _curl_callback_compatible((expr), _curl_read_callback4) || \
437 _curl_callback_compatible((expr), _curl_read_callback5) || \
438 _curl_callback_compatible((expr), _curl_read_callback6))
439 typedef size_t (_curl_read_callback1)(char *, size_t, size_t, void*);
440 typedef size_t (_curl_read_callback2)(char *, size_t, size_t, const void*);
441 typedef size_t (_curl_read_callback3)(char *, size_t, size_t, FILE*);
442 typedef size_t (_curl_read_callback4)(void *, size_t, size_t, void*);
443 typedef size_t (_curl_read_callback5)(void *, size_t, size_t, const void*);
444 typedef size_t (_curl_read_callback6)(void *, size_t, size_t, FILE*);
445
446 /* evaluates to true if expr is of type curl_write_callback or "similar" */
447 #define _curl_is_write_cb(expr) \
448 (_curl_is_read_cb(expr) || \
449 __builtin_types_compatible_p(__typeof__(expr), __typeof__(fwrite)) || \
450 __builtin_types_compatible_p(__typeof__(expr), curl_write_callback) || \
451 _curl_callback_compatible((expr), _curl_write_callback1) || \
452 _curl_callback_compatible((expr), _curl_write_callback2) || \
453 _curl_callback_compatible((expr), _curl_write_callback3) || \
454 _curl_callback_compatible((expr), _curl_write_callback4) || \
455 _curl_callback_compatible((expr), _curl_write_callback5) || \
456 _curl_callback_compatible((expr), _curl_write_callback6))
457 typedef size_t (_curl_write_callback1)(const char *, size_t, size_t, void*);
458 typedef size_t (_curl_write_callback2)(const char *, size_t, size_t,
459 const void*);
460 typedef size_t (_curl_write_callback3)(const char *, size_t, size_t, FILE*);
461 typedef size_t (_curl_write_callback4)(const void *, size_t, size_t, void*);
462 typedef size_t (_curl_write_callback5)(const void *, size_t, size_t,
463 const void*);
464 typedef size_t (_curl_write_callback6)(const void *, size_t, size_t, FILE*);
465
466 /* evaluates to true if expr is of type curl_ioctl_callback or "similar" */
467 #define _curl_is_ioctl_cb(expr) \
468 (_curl_is_NULL(expr) || \
469 __builtin_types_compatible_p(__typeof__(expr), curl_ioctl_callback) || \
470 _curl_callback_compatible((expr), _curl_ioctl_callback1) || \
471 _curl_callback_compatible((expr), _curl_ioctl_callback2) || \
472 _curl_callback_compatible((expr), _curl_ioctl_callback3) || \
473 _curl_callback_compatible((expr), _curl_ioctl_callback4))
474 typedef curlioerr (_curl_ioctl_callback1)(CURL *, int, void*);
475 typedef curlioerr (_curl_ioctl_callback2)(CURL *, int, const void*);
476 typedef curlioerr (_curl_ioctl_callback3)(CURL *, curliocmd, void*);
477 typedef curlioerr (_curl_ioctl_callback4)(CURL *, curliocmd, const void*);
478
479 /* evaluates to true if expr is of type curl_sockopt_callback or "similar" */
480 #define _curl_is_sockopt_cb(expr) \
481 (_curl_is_NULL(expr) || \
482 __builtin_types_compatible_p(__typeof__(expr), curl_sockopt_callback) || \
483 _curl_callback_compatible((expr), _curl_sockopt_callback1) || \
484 _curl_callback_compatible((expr), _curl_sockopt_callback2))
485 typedef int (_curl_sockopt_callback1)(void *, curl_socket_t, curlsocktype);
486 typedef int (_curl_sockopt_callback2)(const void *, curl_socket_t,
487 curlsocktype);
488
489 /* evaluates to true if expr is of type curl_opensocket_callback or
490 "similar" */
491 #define _curl_is_opensocket_cb(expr) \
492 (_curl_is_NULL(expr) || \
493 __builtin_types_compatible_p(__typeof__(expr), curl_opensocket_callback) ||\
494 _curl_callback_compatible((expr), _curl_opensocket_callback1) || \
495 _curl_callback_compatible((expr), _curl_opensocket_callback2) || \
496 _curl_callback_compatible((expr), _curl_opensocket_callback3) || \
497 _curl_callback_compatible((expr), _curl_opensocket_callback4))
498 typedef curl_socket_t (_curl_opensocket_callback1)
499 (void *, curlsocktype, struct curl_sockaddr *);
500 typedef curl_socket_t (_curl_opensocket_callback2)
501 (void *, curlsocktype, const struct curl_sockaddr *);
502 typedef curl_socket_t (_curl_opensocket_callback3)
503 (const void *, curlsocktype, struct curl_sockaddr *);
504 typedef curl_socket_t (_curl_opensocket_callback4)
505 (const void *, curlsocktype, const struct curl_sockaddr *);
506
507 /* evaluates to true if expr is of type curl_progress_callback or "similar" */
508 #define _curl_is_progress_cb(expr) \
509 (_curl_is_NULL(expr) || \
510 __builtin_types_compatible_p(__typeof__(expr), curl_progress_callback) || \
511 _curl_callback_compatible((expr), _curl_progress_callback1) || \
512 _curl_callback_compatible((expr), _curl_progress_callback2))
513 typedef int (_curl_progress_callback1)(void *,
514 double, double, double, double);
515 typedef int (_curl_progress_callback2)(const void *,
516 double, double, double, double);
517
518 /* evaluates to true if expr is of type curl_debug_callback or "similar" */
519 #define _curl_is_debug_cb(expr) \
520 (_curl_is_NULL(expr) || \
521 __builtin_types_compatible_p(__typeof__(expr), curl_debug_callback) || \
522 _curl_callback_compatible((expr), _curl_debug_callback1) || \
523 _curl_callback_compatible((expr), _curl_debug_callback2) || \
524 _curl_callback_compatible((expr), _curl_debug_callback3) || \
525 _curl_callback_compatible((expr), _curl_debug_callback4) || \
526 _curl_callback_compatible((expr), _curl_debug_callback5) || \
527 _curl_callback_compatible((expr), _curl_debug_callback6) || \
528 _curl_callback_compatible((expr), _curl_debug_callback7) || \
529 _curl_callback_compatible((expr), _curl_debug_callback8))
530 typedef int (_curl_debug_callback1) (CURL *,
531 curl_infotype, char *, size_t, void *);
532 typedef int (_curl_debug_callback2) (CURL *,
533 curl_infotype, char *, size_t, const void *);
534 typedef int (_curl_debug_callback3) (CURL *,
535 curl_infotype, const char *, size_t, void *);
536 typedef int (_curl_debug_callback4) (CURL *,
537 curl_infotype, const char *, size_t, const void *);
538 typedef int (_curl_debug_callback5) (CURL *,
539 curl_infotype, unsigned char *, size_t, void *);
540 typedef int (_curl_debug_callback6) (CURL *,
541 curl_infotype, unsigned char *, size_t, const void *);
542 typedef int (_curl_debug_callback7) (CURL *,
543 curl_infotype, const unsigned char *, size_t, void *);
544 typedef int (_curl_debug_callback8) (CURL *,
545 curl_infotype, const unsigned char *, size_t, const void *);
546
547 /* evaluates to true if expr is of type curl_ssl_ctx_callback or "similar" */
548 /* this is getting even messier... */
549 #define _curl_is_ssl_ctx_cb(expr) \
550 (_curl_is_NULL(expr) || \
551 __builtin_types_compatible_p(__typeof__(expr), curl_ssl_ctx_callback) || \
552 _curl_callback_compatible((expr), _curl_ssl_ctx_callback1) || \
553 _curl_callback_compatible((expr), _curl_ssl_ctx_callback2) || \
554 _curl_callback_compatible((expr), _curl_ssl_ctx_callback3) || \
555 _curl_callback_compatible((expr), _curl_ssl_ctx_callback4) || \
556 _curl_callback_compatible((expr), _curl_ssl_ctx_callback5) || \
557 _curl_callback_compatible((expr), _curl_ssl_ctx_callback6) || \
558 _curl_callback_compatible((expr), _curl_ssl_ctx_callback7) || \
559 _curl_callback_compatible((expr), _curl_ssl_ctx_callback8))
560 typedef CURLcode (_curl_ssl_ctx_callback1)(CURL *, void *, void *);
561 typedef CURLcode (_curl_ssl_ctx_callback2)(CURL *, void *, const void *);
562 typedef CURLcode (_curl_ssl_ctx_callback3)(CURL *, const void *, void *);
563 typedef CURLcode (_curl_ssl_ctx_callback4)(CURL *, const void *, const void *);
564 #ifdef HEADER_SSL_H
565 /* hack: if we included OpenSSL's ssl.h, we know about SSL_CTX
566 * this will of course break if we're included before OpenSSL headers...
567 */
568 typedef CURLcode (_curl_ssl_ctx_callback5)(CURL *, SSL_CTX, void *);
569 typedef CURLcode (_curl_ssl_ctx_callback6)(CURL *, SSL_CTX, const void *);
570 typedef CURLcode (_curl_ssl_ctx_callback7)(CURL *, const SSL_CTX, void *);
571 typedef CURLcode (_curl_ssl_ctx_callback8)(CURL *, const SSL_CTX,
572 const void *);
573 #else
574 typedef _curl_ssl_ctx_callback1 _curl_ssl_ctx_callback5;
575 typedef _curl_ssl_ctx_callback1 _curl_ssl_ctx_callback6;
576 typedef _curl_ssl_ctx_callback1 _curl_ssl_ctx_callback7;
577 typedef _curl_ssl_ctx_callback1 _curl_ssl_ctx_callback8;
578 #endif
579
580 /* evaluates to true if expr is of type curl_conv_callback or "similar" */
581 #define _curl_is_conv_cb(expr) \
582 (_curl_is_NULL(expr) || \
583 __builtin_types_compatible_p(__typeof__(expr), curl_conv_callback) || \
584 _curl_callback_compatible((expr), _curl_conv_callback1) || \
585 _curl_callback_compatible((expr), _curl_conv_callback2) || \
586 _curl_callback_compatible((expr), _curl_conv_callback3) || \
587 _curl_callback_compatible((expr), _curl_conv_callback4))
588 typedef CURLcode (*_curl_conv_callback1)(char *, size_t length);
589 typedef CURLcode (*_curl_conv_callback2)(const char *, size_t length);
590 typedef CURLcode (*_curl_conv_callback3)(void *, size_t length);
591 typedef CURLcode (*_curl_conv_callback4)(const void *, size_t length);
592
593 /* evaluates to true if expr is of type curl_seek_callback or "similar" */
594 #define _curl_is_seek_cb(expr) \
595 (_curl_is_NULL(expr) || \
596 __builtin_types_compatible_p(__typeof__(expr), curl_seek_callback) || \
597 _curl_callback_compatible((expr), _curl_seek_callback1) || \
598 _curl_callback_compatible((expr), _curl_seek_callback2))
599 typedef CURLcode (*_curl_seek_callback1)(void *, curl_off_t, int);
600 typedef CURLcode (*_curl_seek_callback2)(const void *, curl_off_t, int);
601
602
603 #endif /* __CURL_TYPECHECK_GCC_H */
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