Line data Source code
1 : #ifndef __CURL_TYPECHECK_GCC_H
2 : #define __CURL_TYPECHECK_GCC_H
3 : /***************************************************************************
4 : * _ _ ____ _
5 : * Project ___| | | | _ \| |
6 : * / __| | | | |_) | |
7 : * | (__| |_| | _ <| |___
8 : * \___|\___/|_| \_\_____|
9 : *
10 : * Copyright (C) 1998 - 2014, 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))) \
145 : __attribute__((__unused__)) __attribute__((__noinline__)) \
146 : id(void) { __asm__(""); }
147 :
148 0 : _CURL_WARNING(_curl_easy_setopt_err_long,
149 : "curl_easy_setopt expects a long argument for this option")
150 0 : _CURL_WARNING(_curl_easy_setopt_err_curl_off_t,
151 : "curl_easy_setopt expects a curl_off_t argument for this option")
152 0 : _CURL_WARNING(_curl_easy_setopt_err_string,
153 : "curl_easy_setopt expects a "
154 : "string (char* or char[]) argument for this option"
155 : )
156 0 : _CURL_WARNING(_curl_easy_setopt_err_write_callback,
157 : "curl_easy_setopt expects a curl_write_callback argument for this option")
158 0 : _CURL_WARNING(_curl_easy_setopt_err_read_cb,
159 : "curl_easy_setopt expects a curl_read_callback argument for this option")
160 0 : _CURL_WARNING(_curl_easy_setopt_err_ioctl_cb,
161 : "curl_easy_setopt expects a curl_ioctl_callback argument for this option")
162 0 : _CURL_WARNING(_curl_easy_setopt_err_sockopt_cb,
163 : "curl_easy_setopt expects a curl_sockopt_callback argument for this option")
164 0 : _CURL_WARNING(_curl_easy_setopt_err_opensocket_cb,
165 : "curl_easy_setopt expects a "
166 : "curl_opensocket_callback argument for this option"
167 : )
168 0 : _CURL_WARNING(_curl_easy_setopt_err_progress_cb,
169 : "curl_easy_setopt expects a curl_progress_callback argument for this option")
170 0 : _CURL_WARNING(_curl_easy_setopt_err_debug_cb,
171 : "curl_easy_setopt expects a curl_debug_callback argument for this option")
172 0 : _CURL_WARNING(_curl_easy_setopt_err_ssl_ctx_cb,
173 : "curl_easy_setopt expects a curl_ssl_ctx_callback argument for this option")
174 0 : _CURL_WARNING(_curl_easy_setopt_err_conv_cb,
175 : "curl_easy_setopt expects a curl_conv_callback argument for this option")
176 0 : _CURL_WARNING(_curl_easy_setopt_err_seek_cb,
177 : "curl_easy_setopt expects a curl_seek_callback argument for this option")
178 0 : _CURL_WARNING(_curl_easy_setopt_err_cb_data,
179 : "curl_easy_setopt expects a "
180 : "private data pointer as argument for this option")
181 0 : _CURL_WARNING(_curl_easy_setopt_err_error_buffer,
182 : "curl_easy_setopt expects a "
183 : "char buffer of CURL_ERROR_SIZE as argument for this option")
184 0 : _CURL_WARNING(_curl_easy_setopt_err_FILE,
185 : "curl_easy_setopt expects a FILE* argument for this option")
186 0 : _CURL_WARNING(_curl_easy_setopt_err_postfields,
187 : "curl_easy_setopt expects a void* or char* argument for this option")
188 0 : _CURL_WARNING(_curl_easy_setopt_err_curl_httpost,
189 : "curl_easy_setopt expects a struct curl_httppost* argument for this option")
190 0 : _CURL_WARNING(_curl_easy_setopt_err_curl_slist,
191 : "curl_easy_setopt expects a struct curl_slist* argument for this option")
192 0 : _CURL_WARNING(_curl_easy_setopt_err_CURLSH,
193 : "curl_easy_setopt expects a CURLSH* argument for this option")
194 :
195 0 : _CURL_WARNING(_curl_easy_getinfo_err_string,
196 : "curl_easy_getinfo expects a pointer to char * for this info")
197 0 : _CURL_WARNING(_curl_easy_getinfo_err_long,
198 : "curl_easy_getinfo expects a pointer to long for this info")
199 0 : _CURL_WARNING(_curl_easy_getinfo_err_double,
200 : "curl_easy_getinfo expects a pointer to double for this info")
201 0 : _CURL_WARNING(_curl_easy_getinfo_err_curl_slist,
202 : "curl_easy_getinfo expects a pointer to struct curl_slist * for this info")
203 :
204 : /* groups of curl_easy_setops options that take the same type of argument */
205 :
206 : /* To add a new option to one of the groups, just add
207 : * (option) == CURLOPT_SOMETHING
208 : * to the or-expression. If the option takes a long or curl_off_t, you don't
209 : * have to do anything
210 : */
211 :
212 : /* evaluates to true if option takes a long argument */
213 : #define _curl_is_long_option(option) \
214 : (0 < (option) && (option) < CURLOPTTYPE_OBJECTPOINT)
215 :
216 : #define _curl_is_off_t_option(option) \
217 : ((option) > CURLOPTTYPE_OFF_T)
218 :
219 : /* evaluates to true if option takes a char* argument */
220 : #define _curl_is_string_option(option) \
221 : ((option) == CURLOPT_URL || \
222 : (option) == CURLOPT_PROXY || \
223 : (option) == CURLOPT_INTERFACE || \
224 : (option) == CURLOPT_NETRC_FILE || \
225 : (option) == CURLOPT_USERPWD || \
226 : (option) == CURLOPT_USERNAME || \
227 : (option) == CURLOPT_PASSWORD || \
228 : (option) == CURLOPT_PROXYUSERPWD || \
229 : (option) == CURLOPT_PROXYUSERNAME || \
230 : (option) == CURLOPT_PROXYPASSWORD || \
231 : (option) == CURLOPT_NOPROXY || \
232 : (option) == CURLOPT_ACCEPT_ENCODING || \
233 : (option) == CURLOPT_REFERER || \
234 : (option) == CURLOPT_USERAGENT || \
235 : (option) == CURLOPT_COOKIE || \
236 : (option) == CURLOPT_COOKIEFILE || \
237 : (option) == CURLOPT_COOKIEJAR || \
238 : (option) == CURLOPT_COOKIELIST || \
239 : (option) == CURLOPT_FTPPORT || \
240 : (option) == CURLOPT_FTP_ALTERNATIVE_TO_USER || \
241 : (option) == CURLOPT_FTP_ACCOUNT || \
242 : (option) == CURLOPT_RANGE || \
243 : (option) == CURLOPT_CUSTOMREQUEST || \
244 : (option) == CURLOPT_SSLCERT || \
245 : (option) == CURLOPT_SSLCERTTYPE || \
246 : (option) == CURLOPT_SSLKEY || \
247 : (option) == CURLOPT_SSLKEYTYPE || \
248 : (option) == CURLOPT_KEYPASSWD || \
249 : (option) == CURLOPT_SSLENGINE || \
250 : (option) == CURLOPT_CAINFO || \
251 : (option) == CURLOPT_CAPATH || \
252 : (option) == CURLOPT_RANDOM_FILE || \
253 : (option) == CURLOPT_EGDSOCKET || \
254 : (option) == CURLOPT_SSL_CIPHER_LIST || \
255 : (option) == CURLOPT_KRBLEVEL || \
256 : (option) == CURLOPT_SSH_HOST_PUBLIC_KEY_MD5 || \
257 : (option) == CURLOPT_SSH_PUBLIC_KEYFILE || \
258 : (option) == CURLOPT_SSH_PRIVATE_KEYFILE || \
259 : (option) == CURLOPT_CRLFILE || \
260 : (option) == CURLOPT_ISSUERCERT || \
261 : (option) == CURLOPT_SOCKS5_GSSAPI_SERVICE || \
262 : (option) == CURLOPT_SSH_KNOWNHOSTS || \
263 : (option) == CURLOPT_MAIL_FROM || \
264 : (option) == CURLOPT_RTSP_SESSION_ID || \
265 : (option) == CURLOPT_RTSP_STREAM_URI || \
266 : (option) == CURLOPT_RTSP_TRANSPORT || \
267 : (option) == CURLOPT_XOAUTH2_BEARER || \
268 : (option) == CURLOPT_DNS_SERVERS || \
269 : (option) == CURLOPT_DNS_INTERFACE || \
270 : (option) == CURLOPT_DNS_LOCAL_IP4 || \
271 : (option) == CURLOPT_DNS_LOCAL_IP6 || \
272 : (option) == CURLOPT_LOGIN_OPTIONS || \
273 : 0)
274 :
275 : /* evaluates to true if option takes a curl_write_callback argument */
276 : #define _curl_is_write_cb_option(option) \
277 : ((option) == CURLOPT_HEADERFUNCTION || \
278 : (option) == CURLOPT_WRITEFUNCTION)
279 :
280 : /* evaluates to true if option takes a curl_conv_callback argument */
281 : #define _curl_is_conv_cb_option(option) \
282 : ((option) == CURLOPT_CONV_TO_NETWORK_FUNCTION || \
283 : (option) == CURLOPT_CONV_FROM_NETWORK_FUNCTION || \
284 : (option) == CURLOPT_CONV_FROM_UTF8_FUNCTION)
285 :
286 : /* evaluates to true if option takes a data argument to pass to a callback */
287 : #define _curl_is_cb_data_option(option) \
288 : ((option) == CURLOPT_WRITEDATA || \
289 : (option) == CURLOPT_READDATA || \
290 : (option) == CURLOPT_IOCTLDATA || \
291 : (option) == CURLOPT_SOCKOPTDATA || \
292 : (option) == CURLOPT_OPENSOCKETDATA || \
293 : (option) == CURLOPT_PROGRESSDATA || \
294 : (option) == CURLOPT_HEADERDATA || \
295 : (option) == CURLOPT_DEBUGDATA || \
296 : (option) == CURLOPT_SSL_CTX_DATA || \
297 : (option) == CURLOPT_SEEKDATA || \
298 : (option) == CURLOPT_PRIVATE || \
299 : (option) == CURLOPT_SSH_KEYDATA || \
300 : (option) == CURLOPT_INTERLEAVEDATA || \
301 : (option) == CURLOPT_CHUNK_DATA || \
302 : (option) == CURLOPT_FNMATCH_DATA || \
303 : 0)
304 :
305 : /* evaluates to true if option takes a POST data argument (void* or char*) */
306 : #define _curl_is_postfields_option(option) \
307 : ((option) == CURLOPT_POSTFIELDS || \
308 : (option) == CURLOPT_COPYPOSTFIELDS || \
309 : 0)
310 :
311 : /* evaluates to true if option takes a struct curl_slist * argument */
312 : #define _curl_is_slist_option(option) \
313 : ((option) == CURLOPT_HTTPHEADER || \
314 : (option) == CURLOPT_HTTP200ALIASES || \
315 : (option) == CURLOPT_QUOTE || \
316 : (option) == CURLOPT_POSTQUOTE || \
317 : (option) == CURLOPT_PREQUOTE || \
318 : (option) == CURLOPT_TELNETOPTIONS || \
319 : (option) == CURLOPT_MAIL_RCPT || \
320 : 0)
321 :
322 : /* groups of curl_easy_getinfo infos that take the same type of argument */
323 :
324 : /* evaluates to true if info expects a pointer to char * argument */
325 : #define _curl_is_string_info(info) \
326 : (CURLINFO_STRING < (info) && (info) < CURLINFO_LONG)
327 :
328 : /* evaluates to true if info expects a pointer to long argument */
329 : #define _curl_is_long_info(info) \
330 : (CURLINFO_LONG < (info) && (info) < CURLINFO_DOUBLE)
331 :
332 : /* evaluates to true if info expects a pointer to double argument */
333 : #define _curl_is_double_info(info) \
334 : (CURLINFO_DOUBLE < (info) && (info) < CURLINFO_SLIST)
335 :
336 : /* true if info expects a pointer to struct curl_slist * argument */
337 : #define _curl_is_slist_info(info) \
338 : (CURLINFO_SLIST < (info))
339 :
340 :
341 : /* typecheck helpers -- check whether given expression has requested type*/
342 :
343 : /* For pointers, you can use the _curl_is_ptr/_curl_is_arr macros,
344 : * otherwise define a new macro. Search for __builtin_types_compatible_p
345 : * in the GCC manual.
346 : * NOTE: these macros MUST NOT EVALUATE their arguments! The argument is
347 : * the actual expression passed to the curl_easy_setopt macro. This
348 : * means that you can only apply the sizeof and __typeof__ operators, no
349 : * == or whatsoever.
350 : */
351 :
352 : /* XXX: should evaluate to true iff expr is a pointer */
353 : #define _curl_is_any_ptr(expr) \
354 : (sizeof(expr) == sizeof(void*))
355 :
356 : /* evaluates to true if expr is NULL */
357 : /* XXX: must not evaluate expr, so this check is not accurate */
358 : #define _curl_is_NULL(expr) \
359 : (__builtin_types_compatible_p(__typeof__(expr), __typeof__(NULL)))
360 :
361 : /* evaluates to true if expr is type*, const type* or NULL */
362 : #define _curl_is_ptr(expr, type) \
363 : (_curl_is_NULL(expr) || \
364 : __builtin_types_compatible_p(__typeof__(expr), type *) || \
365 : __builtin_types_compatible_p(__typeof__(expr), const type *))
366 :
367 : /* evaluates to true if expr is one of type[], type*, NULL or const type* */
368 : #define _curl_is_arr(expr, type) \
369 : (_curl_is_ptr((expr), type) || \
370 : __builtin_types_compatible_p(__typeof__(expr), type []))
371 :
372 : /* evaluates to true if expr is a string */
373 : #define _curl_is_string(expr) \
374 : (_curl_is_arr((expr), char) || \
375 : _curl_is_arr((expr), signed char) || \
376 : _curl_is_arr((expr), unsigned char))
377 :
378 : /* evaluates to true if expr is a long (no matter the signedness)
379 : * XXX: for now, int is also accepted (and therefore short and char, which
380 : * are promoted to int when passed to a variadic function) */
381 : #define _curl_is_long(expr) \
382 : (__builtin_types_compatible_p(__typeof__(expr), long) || \
383 : __builtin_types_compatible_p(__typeof__(expr), signed long) || \
384 : __builtin_types_compatible_p(__typeof__(expr), unsigned long) || \
385 : __builtin_types_compatible_p(__typeof__(expr), int) || \
386 : __builtin_types_compatible_p(__typeof__(expr), signed int) || \
387 : __builtin_types_compatible_p(__typeof__(expr), unsigned int) || \
388 : __builtin_types_compatible_p(__typeof__(expr), short) || \
389 : __builtin_types_compatible_p(__typeof__(expr), signed short) || \
390 : __builtin_types_compatible_p(__typeof__(expr), unsigned short) || \
391 : __builtin_types_compatible_p(__typeof__(expr), char) || \
392 : __builtin_types_compatible_p(__typeof__(expr), signed char) || \
393 : __builtin_types_compatible_p(__typeof__(expr), unsigned char))
394 :
395 : /* evaluates to true if expr is of type curl_off_t */
396 : #define _curl_is_off_t(expr) \
397 : (__builtin_types_compatible_p(__typeof__(expr), curl_off_t))
398 :
399 : /* evaluates to true if expr is abuffer suitable for CURLOPT_ERRORBUFFER */
400 : /* XXX: also check size of an char[] array? */
401 : #define _curl_is_error_buffer(expr) \
402 : (_curl_is_NULL(expr) || \
403 : __builtin_types_compatible_p(__typeof__(expr), char *) || \
404 : __builtin_types_compatible_p(__typeof__(expr), char[]))
405 :
406 : /* evaluates to true if expr is of type (const) void* or (const) FILE* */
407 : #if 0
408 : #define _curl_is_cb_data(expr) \
409 : (_curl_is_ptr((expr), void) || \
410 : _curl_is_ptr((expr), FILE))
411 : #else /* be less strict */
412 : #define _curl_is_cb_data(expr) \
413 : _curl_is_any_ptr(expr)
414 : #endif
415 :
416 : /* evaluates to true if expr is of type FILE* */
417 : #define _curl_is_FILE(expr) \
418 : (__builtin_types_compatible_p(__typeof__(expr), FILE *))
419 :
420 : /* evaluates to true if expr can be passed as POST data (void* or char*) */
421 : #define _curl_is_postfields(expr) \
422 : (_curl_is_ptr((expr), void) || \
423 : _curl_is_arr((expr), char))
424 :
425 : /* FIXME: the whole callback checking is messy...
426 : * The idea is to tolerate char vs. void and const vs. not const
427 : * pointers in arguments at least
428 : */
429 : /* helper: __builtin_types_compatible_p distinguishes between functions and
430 : * function pointers, hide it */
431 : #define _curl_callback_compatible(func, type) \
432 : (__builtin_types_compatible_p(__typeof__(func), type) || \
433 : __builtin_types_compatible_p(__typeof__(func), type*))
434 :
435 : /* evaluates to true if expr is of type curl_read_callback or "similar" */
436 : #define _curl_is_read_cb(expr) \
437 : (_curl_is_NULL(expr) || \
438 : __builtin_types_compatible_p(__typeof__(expr), __typeof__(fread)) || \
439 : __builtin_types_compatible_p(__typeof__(expr), curl_read_callback) || \
440 : _curl_callback_compatible((expr), _curl_read_callback1) || \
441 : _curl_callback_compatible((expr), _curl_read_callback2) || \
442 : _curl_callback_compatible((expr), _curl_read_callback3) || \
443 : _curl_callback_compatible((expr), _curl_read_callback4) || \
444 : _curl_callback_compatible((expr), _curl_read_callback5) || \
445 : _curl_callback_compatible((expr), _curl_read_callback6))
446 : typedef size_t (_curl_read_callback1)(char *, size_t, size_t, void*);
447 : typedef size_t (_curl_read_callback2)(char *, size_t, size_t, const void*);
448 : typedef size_t (_curl_read_callback3)(char *, size_t, size_t, FILE*);
449 : typedef size_t (_curl_read_callback4)(void *, size_t, size_t, void*);
450 : typedef size_t (_curl_read_callback5)(void *, size_t, size_t, const void*);
451 : typedef size_t (_curl_read_callback6)(void *, size_t, size_t, FILE*);
452 :
453 : /* evaluates to true if expr is of type curl_write_callback or "similar" */
454 : #define _curl_is_write_cb(expr) \
455 : (_curl_is_read_cb(expr) || \
456 : __builtin_types_compatible_p(__typeof__(expr), __typeof__(fwrite)) || \
457 : __builtin_types_compatible_p(__typeof__(expr), curl_write_callback) || \
458 : _curl_callback_compatible((expr), _curl_write_callback1) || \
459 : _curl_callback_compatible((expr), _curl_write_callback2) || \
460 : _curl_callback_compatible((expr), _curl_write_callback3) || \
461 : _curl_callback_compatible((expr), _curl_write_callback4) || \
462 : _curl_callback_compatible((expr), _curl_write_callback5) || \
463 : _curl_callback_compatible((expr), _curl_write_callback6))
464 : typedef size_t (_curl_write_callback1)(const char *, size_t, size_t, void*);
465 : typedef size_t (_curl_write_callback2)(const char *, size_t, size_t,
466 : const void*);
467 : typedef size_t (_curl_write_callback3)(const char *, size_t, size_t, FILE*);
468 : typedef size_t (_curl_write_callback4)(const void *, size_t, size_t, void*);
469 : typedef size_t (_curl_write_callback5)(const void *, size_t, size_t,
470 : const void*);
471 : typedef size_t (_curl_write_callback6)(const void *, size_t, size_t, FILE*);
472 :
473 : /* evaluates to true if expr is of type curl_ioctl_callback or "similar" */
474 : #define _curl_is_ioctl_cb(expr) \
475 : (_curl_is_NULL(expr) || \
476 : __builtin_types_compatible_p(__typeof__(expr), curl_ioctl_callback) || \
477 : _curl_callback_compatible((expr), _curl_ioctl_callback1) || \
478 : _curl_callback_compatible((expr), _curl_ioctl_callback2) || \
479 : _curl_callback_compatible((expr), _curl_ioctl_callback3) || \
480 : _curl_callback_compatible((expr), _curl_ioctl_callback4))
481 : typedef curlioerr (_curl_ioctl_callback1)(CURL *, int, void*);
482 : typedef curlioerr (_curl_ioctl_callback2)(CURL *, int, const void*);
483 : typedef curlioerr (_curl_ioctl_callback3)(CURL *, curliocmd, void*);
484 : typedef curlioerr (_curl_ioctl_callback4)(CURL *, curliocmd, const void*);
485 :
486 : /* evaluates to true if expr is of type curl_sockopt_callback or "similar" */
487 : #define _curl_is_sockopt_cb(expr) \
488 : (_curl_is_NULL(expr) || \
489 : __builtin_types_compatible_p(__typeof__(expr), curl_sockopt_callback) || \
490 : _curl_callback_compatible((expr), _curl_sockopt_callback1) || \
491 : _curl_callback_compatible((expr), _curl_sockopt_callback2))
492 : typedef int (_curl_sockopt_callback1)(void *, curl_socket_t, curlsocktype);
493 : typedef int (_curl_sockopt_callback2)(const void *, curl_socket_t,
494 : curlsocktype);
495 :
496 : /* evaluates to true if expr is of type curl_opensocket_callback or
497 : "similar" */
498 : #define _curl_is_opensocket_cb(expr) \
499 : (_curl_is_NULL(expr) || \
500 : __builtin_types_compatible_p(__typeof__(expr), curl_opensocket_callback) ||\
501 : _curl_callback_compatible((expr), _curl_opensocket_callback1) || \
502 : _curl_callback_compatible((expr), _curl_opensocket_callback2) || \
503 : _curl_callback_compatible((expr), _curl_opensocket_callback3) || \
504 : _curl_callback_compatible((expr), _curl_opensocket_callback4))
505 : typedef curl_socket_t (_curl_opensocket_callback1)
506 : (void *, curlsocktype, struct curl_sockaddr *);
507 : typedef curl_socket_t (_curl_opensocket_callback2)
508 : (void *, curlsocktype, const struct curl_sockaddr *);
509 : typedef curl_socket_t (_curl_opensocket_callback3)
510 : (const void *, curlsocktype, struct curl_sockaddr *);
511 : typedef curl_socket_t (_curl_opensocket_callback4)
512 : (const void *, curlsocktype, const struct curl_sockaddr *);
513 :
514 : /* evaluates to true if expr is of type curl_progress_callback or "similar" */
515 : #define _curl_is_progress_cb(expr) \
516 : (_curl_is_NULL(expr) || \
517 : __builtin_types_compatible_p(__typeof__(expr), curl_progress_callback) || \
518 : _curl_callback_compatible((expr), _curl_progress_callback1) || \
519 : _curl_callback_compatible((expr), _curl_progress_callback2))
520 : typedef int (_curl_progress_callback1)(void *,
521 : double, double, double, double);
522 : typedef int (_curl_progress_callback2)(const void *,
523 : double, double, double, double);
524 :
525 : /* evaluates to true if expr is of type curl_debug_callback or "similar" */
526 : #define _curl_is_debug_cb(expr) \
527 : (_curl_is_NULL(expr) || \
528 : __builtin_types_compatible_p(__typeof__(expr), curl_debug_callback) || \
529 : _curl_callback_compatible((expr), _curl_debug_callback1) || \
530 : _curl_callback_compatible((expr), _curl_debug_callback2) || \
531 : _curl_callback_compatible((expr), _curl_debug_callback3) || \
532 : _curl_callback_compatible((expr), _curl_debug_callback4) || \
533 : _curl_callback_compatible((expr), _curl_debug_callback5) || \
534 : _curl_callback_compatible((expr), _curl_debug_callback6) || \
535 : _curl_callback_compatible((expr), _curl_debug_callback7) || \
536 : _curl_callback_compatible((expr), _curl_debug_callback8))
537 : typedef int (_curl_debug_callback1) (CURL *,
538 : curl_infotype, char *, size_t, void *);
539 : typedef int (_curl_debug_callback2) (CURL *,
540 : curl_infotype, char *, size_t, const void *);
541 : typedef int (_curl_debug_callback3) (CURL *,
542 : curl_infotype, const char *, size_t, void *);
543 : typedef int (_curl_debug_callback4) (CURL *,
544 : curl_infotype, const char *, size_t, const void *);
545 : typedef int (_curl_debug_callback5) (CURL *,
546 : curl_infotype, unsigned char *, size_t, void *);
547 : typedef int (_curl_debug_callback6) (CURL *,
548 : curl_infotype, unsigned char *, size_t, const void *);
549 : typedef int (_curl_debug_callback7) (CURL *,
550 : curl_infotype, const unsigned char *, size_t, void *);
551 : typedef int (_curl_debug_callback8) (CURL *,
552 : curl_infotype, const unsigned char *, size_t, const void *);
553 :
554 : /* evaluates to true if expr is of type curl_ssl_ctx_callback or "similar" */
555 : /* this is getting even messier... */
556 : #define _curl_is_ssl_ctx_cb(expr) \
557 : (_curl_is_NULL(expr) || \
558 : __builtin_types_compatible_p(__typeof__(expr), curl_ssl_ctx_callback) || \
559 : _curl_callback_compatible((expr), _curl_ssl_ctx_callback1) || \
560 : _curl_callback_compatible((expr), _curl_ssl_ctx_callback2) || \
561 : _curl_callback_compatible((expr), _curl_ssl_ctx_callback3) || \
562 : _curl_callback_compatible((expr), _curl_ssl_ctx_callback4) || \
563 : _curl_callback_compatible((expr), _curl_ssl_ctx_callback5) || \
564 : _curl_callback_compatible((expr), _curl_ssl_ctx_callback6) || \
565 : _curl_callback_compatible((expr), _curl_ssl_ctx_callback7) || \
566 : _curl_callback_compatible((expr), _curl_ssl_ctx_callback8))
567 : typedef CURLcode (_curl_ssl_ctx_callback1)(CURL *, void *, void *);
568 : typedef CURLcode (_curl_ssl_ctx_callback2)(CURL *, void *, const void *);
569 : typedef CURLcode (_curl_ssl_ctx_callback3)(CURL *, const void *, void *);
570 : typedef CURLcode (_curl_ssl_ctx_callback4)(CURL *, const void *, const void *);
571 : #ifdef HEADER_SSL_H
572 : /* hack: if we included OpenSSL's ssl.h, we know about SSL_CTX
573 : * this will of course break if we're included before OpenSSL headers...
574 : */
575 : typedef CURLcode (_curl_ssl_ctx_callback5)(CURL *, SSL_CTX, void *);
576 : typedef CURLcode (_curl_ssl_ctx_callback6)(CURL *, SSL_CTX, const void *);
577 : typedef CURLcode (_curl_ssl_ctx_callback7)(CURL *, const SSL_CTX, void *);
578 : typedef CURLcode (_curl_ssl_ctx_callback8)(CURL *, const SSL_CTX,
579 : const void *);
580 : #else
581 : typedef _curl_ssl_ctx_callback1 _curl_ssl_ctx_callback5;
582 : typedef _curl_ssl_ctx_callback1 _curl_ssl_ctx_callback6;
583 : typedef _curl_ssl_ctx_callback1 _curl_ssl_ctx_callback7;
584 : typedef _curl_ssl_ctx_callback1 _curl_ssl_ctx_callback8;
585 : #endif
586 :
587 : /* evaluates to true if expr is of type curl_conv_callback or "similar" */
588 : #define _curl_is_conv_cb(expr) \
589 : (_curl_is_NULL(expr) || \
590 : __builtin_types_compatible_p(__typeof__(expr), curl_conv_callback) || \
591 : _curl_callback_compatible((expr), _curl_conv_callback1) || \
592 : _curl_callback_compatible((expr), _curl_conv_callback2) || \
593 : _curl_callback_compatible((expr), _curl_conv_callback3) || \
594 : _curl_callback_compatible((expr), _curl_conv_callback4))
595 : typedef CURLcode (*_curl_conv_callback1)(char *, size_t length);
596 : typedef CURLcode (*_curl_conv_callback2)(const char *, size_t length);
597 : typedef CURLcode (*_curl_conv_callback3)(void *, size_t length);
598 : typedef CURLcode (*_curl_conv_callback4)(const void *, size_t length);
599 :
600 : /* evaluates to true if expr is of type curl_seek_callback or "similar" */
601 : #define _curl_is_seek_cb(expr) \
602 : (_curl_is_NULL(expr) || \
603 : __builtin_types_compatible_p(__typeof__(expr), curl_seek_callback) || \
604 : _curl_callback_compatible((expr), _curl_seek_callback1) || \
605 : _curl_callback_compatible((expr), _curl_seek_callback2))
606 : typedef CURLcode (*_curl_seek_callback1)(void *, curl_off_t, int);
607 : typedef CURLcode (*_curl_seek_callback2)(const void *, curl_off_t, int);
608 :
609 :
610 : #endif /* __CURL_TYPECHECK_GCC_H */
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