1 #ifndef __CURL_TYPECHECK_GCC_H 2 #define __CURL_TYPECHECK_GCC_H 3 /*************************************************************************** 4 * _ _ ____ _ 5 * Project ___| | | | _ \| | 6 * / __| | | | |_) | | 7 * | (__| |_| | _ <| |___ 8 * \___|\___/|_| \_\_____| 9 * 10 * Copyright (C) 1998 - 2009, Daniel Stenberg, <daniel (at) 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 1.9 2009-01-25 23:26:31 bagder 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_USERNAME || \ 200 (option) == CURLOPT_PASSWORD || \ 201 (option) == CURLOPT_PROXYUSERPWD || \ 202 (option) == CURLOPT_PROXYUSERNAME || \ 203 (option) == CURLOPT_PROXYPASSWORD || \ 204 (option) == CURLOPT_NOPROXY || \ 205 (option) == CURLOPT_ENCODING || \ 206 (option) == CURLOPT_REFERER || \ 207 (option) == CURLOPT_USERAGENT || \ 208 (option) == CURLOPT_COOKIE || \ 209 (option) == CURLOPT_COOKIEFILE || \ 210 (option) == CURLOPT_COOKIEJAR || \ 211 (option) == CURLOPT_COOKIELIST || \ 212 (option) == CURLOPT_FTPPORT || \ 213 (option) == CURLOPT_FTP_ALTERNATIVE_TO_USER || \ 214 (option) == CURLOPT_FTP_ACCOUNT || \ 215 (option) == CURLOPT_RANGE || \ 216 (option) == CURLOPT_CUSTOMREQUEST || \ 217 (option) == CURLOPT_SSLCERT || \ 218 (option) == CURLOPT_SSLCERTTYPE || \ 219 (option) == CURLOPT_SSLKEY || \ 220 (option) == CURLOPT_SSLKEYTYPE || \ 221 (option) == CURLOPT_KEYPASSWD || \ 222 (option) == CURLOPT_SSLENGINE || \ 223 (option) == CURLOPT_CAINFO || \ 224 (option) == CURLOPT_CAPATH || \ 225 (option) == CURLOPT_RANDOM_FILE || \ 226 (option) == CURLOPT_EGDSOCKET || \ 227 (option) == CURLOPT_SSL_CIPHER_LIST || \ 228 (option) == CURLOPT_KRBLEVEL || \ 229 (option) == CURLOPT_SSH_HOST_PUBLIC_KEY_MD5 || \ 230 (option) == CURLOPT_SSH_PUBLIC_KEYFILE || \ 231 (option) == CURLOPT_SSH_PRIVATE_KEYFILE || \ 232 (option) == CURLOPT_CRLFILE || \ 233 (option) == CURLOPT_ISSUERCERT || \ 234 0) 235 236 /* evaluates to true if option takes a curl_write_callback argument */ 237 #define _curl_is_write_cb_option(option) \ 238 ((option) == CURLOPT_HEADERFUNCTION || \ 239 (option) == CURLOPT_WRITEFUNCTION) 240 241 /* evaluates to true if option takes a curl_conv_callback argument */ 242 #define _curl_is_conv_cb_option(option) \ 243 ((option) == CURLOPT_CONV_TO_NETWORK_FUNCTION || \ 244 (option) == CURLOPT_CONV_FROM_NETWORK_FUNCTION || \ 245 (option) == CURLOPT_CONV_FROM_UTF8_FUNCTION) 246 247 /* evaluates to true if option takes a data argument to pass to a callback */ 248 #define _curl_is_cb_data_option(option) \ 249 ((option) == CURLOPT_WRITEDATA || \ 250 (option) == CURLOPT_READDATA || \ 251 (option) == CURLOPT_IOCTLDATA || \ 252 (option) == CURLOPT_SOCKOPTDATA || \ 253 (option) == CURLOPT_OPENSOCKETDATA || \ 254 (option) == CURLOPT_PROGRESSDATA || \ 255 (option) == CURLOPT_WRITEHEADER || \ 256 (option) == CURLOPT_DEBUGDATA || \ 257 (option) == CURLOPT_SSL_CTX_DATA || \ 258 (option) == CURLOPT_SEEKDATA || \ 259 (option) == CURLOPT_PRIVATE || \ 260 0) 261 262 /* evaluates to true if option takes a POST data argument (void* or char*) */ 263 #define _curl_is_postfields_option(option) \ 264 ((option) == CURLOPT_POSTFIELDS || \ 265 (option) == CURLOPT_COPYPOSTFIELDS || \ 266 0) 267 268 /* evaluates to true if option takes a struct curl_slist * argument */ 269 #define _curl_is_slist_option(option) \ 270 ((option) == CURLOPT_HTTPHEADER || \ 271 (option) == CURLOPT_HTTP200ALIASES || \ 272 (option) == CURLOPT_QUOTE || \ 273 (option) == CURLOPT_POSTQUOTE || \ 274 (option) == CURLOPT_PREQUOTE || \ 275 (option) == CURLOPT_TELNETOPTIONS || \ 276 0) 277 278 /* groups of curl_easy_getinfo infos that take the same type of argument */ 279 280 /* evaluates to true if info expects a pointer to char * argument */ 281 #define _curl_is_string_info(info) \ 282 (CURLINFO_STRING < (info) && (info) < CURLINFO_LONG) 283 284 /* evaluates to true if info expects a pointer to long argument */ 285 #define _curl_is_long_info(info) \ 286 (CURLINFO_LONG < (info) && (info) < CURLINFO_DOUBLE) 287 288 /* evaluates to true if info expects a pointer to double argument */ 289 #define _curl_is_double_info(info) \ 290 (CURLINFO_DOUBLE < (info) && (info) < CURLINFO_SLIST) 291 292 /* true if info expects a pointer to struct curl_slist * argument */ 293 #define _curl_is_slist_info(info) \ 294 (CURLINFO_SLIST < (info)) 295 296 297 /* typecheck helpers -- check whether given expression has requested type*/ 298 299 /* For pointers, you can use the _curl_is_ptr/_curl_is_arr macros, 300 * otherwise define a new macro. Search for __builtin_types_compatible_p 301 * in the GCC manual. 302 * NOTE: these macros MUST NOT EVALUATE their arguments! The argument is 303 * the actual expression passed to the curl_easy_setopt macro. This 304 * means that you can only apply the sizeof and __typeof__ operators, no 305 * == or whatsoever. 306 */ 307 308 /* XXX: should evaluate to true iff expr is a pointer */ 309 #define _curl_is_any_ptr(expr) \ 310 (sizeof(expr) == sizeof(void*)) 311 312 /* evaluates to true if expr is NULL */ 313 /* XXX: must not evaluate expr, so this check is not accurate */ 314 #define _curl_is_NULL(expr) \ 315 (__builtin_types_compatible_p(__typeof__(expr), __typeof__(NULL))) 316 317 /* evaluates to true if expr is type*, const type* or NULL */ 318 #define _curl_is_ptr(expr, type) \ 319 (_curl_is_NULL(expr) || \ 320 __builtin_types_compatible_p(__typeof__(expr), type *) || \ 321 __builtin_types_compatible_p(__typeof__(expr), const type *)) 322 323 /* evaluates to true if expr is one of type[], type*, NULL or const type* */ 324 #define _curl_is_arr(expr, type) \ 325 (_curl_is_ptr((expr), type) || \ 326 __builtin_types_compatible_p(__typeof__(expr), type [])) 327 328 /* evaluates to true if expr is a string */ 329 #define _curl_is_string(expr) \ 330 (_curl_is_arr((expr), char) || \ 331 _curl_is_arr((expr), signed char) || \ 332 _curl_is_arr((expr), unsigned char)) 333 334 /* evaluates to true if expr is a long (no matter the signedness) 335 * XXX: for now, int is also accepted (and therefore short and char, which 336 * are promoted to int when passed to a variadic function) */ 337 #define _curl_is_long(expr) \ 338 (__builtin_types_compatible_p(__typeof__(expr), long) || \ 339 __builtin_types_compatible_p(__typeof__(expr), signed long) || \ 340 __builtin_types_compatible_p(__typeof__(expr), unsigned long) || \ 341 __builtin_types_compatible_p(__typeof__(expr), int) || \ 342 __builtin_types_compatible_p(__typeof__(expr), signed int) || \ 343 __builtin_types_compatible_p(__typeof__(expr), unsigned int) || \ 344 __builtin_types_compatible_p(__typeof__(expr), short) || \ 345 __builtin_types_compatible_p(__typeof__(expr), signed short) || \ 346 __builtin_types_compatible_p(__typeof__(expr), unsigned short) || \ 347 __builtin_types_compatible_p(__typeof__(expr), char) || \ 348 __builtin_types_compatible_p(__typeof__(expr), signed char) || \ 349 __builtin_types_compatible_p(__typeof__(expr), unsigned char)) 350 351 /* evaluates to true if expr is of type curl_off_t */ 352 #define _curl_is_off_t(expr) \ 353 (__builtin_types_compatible_p(__typeof__(expr), curl_off_t)) 354 355 /* evaluates to true if expr is abuffer suitable for CURLOPT_ERRORBUFFER */ 356 /* XXX: also check size of an char[] array? */ 357 #define _curl_is_error_buffer(expr) \ 358 (__builtin_types_compatible_p(__typeof__(expr), char *) || \ 359 __builtin_types_compatible_p(__typeof__(expr), char[])) 360 361 /* evaluates to true if expr is of type (const) void* or (const) FILE* */ 362 #if 0 363 #define _curl_is_cb_data(expr) \ 364 (_curl_is_ptr((expr), void) || \ 365 _curl_is_ptr((expr), FILE)) 366 #else /* be less strict */ 367 #define _curl_is_cb_data(expr) \ 368 _curl_is_any_ptr(expr) 369 #endif 370 371 /* evaluates to true if expr is of type FILE* */ 372 #define _curl_is_FILE(expr) \ 373 (__builtin_types_compatible_p(__typeof__(expr), FILE *)) 374 375 /* evaluates to true if expr can be passed as POST data (void* or char*) */ 376 #define _curl_is_postfields(expr) \ 377 (_curl_is_ptr((expr), void) || \ 378 _curl_is_arr((expr), char)) 379 380 /* FIXME: the whole callback checking is messy... 381 * The idea is to tolerate char vs. void and const vs. not const 382 * pointers in arguments at least 383 */ 384 /* helper: __builtin_types_compatible_p distinguishes between functions and 385 * function pointers, hide it */ 386 #define _curl_callback_compatible(func, type) \ 387 (__builtin_types_compatible_p(__typeof__(func), type) || \ 388 __builtin_types_compatible_p(__typeof__(func), type*)) 389 390 /* evaluates to true if expr is of type curl_read_callback or "similar" */ 391 #define _curl_is_read_cb(expr) \ 392 (_curl_is_NULL(expr) || \ 393 __builtin_types_compatible_p(__typeof__(expr), __typeof__(fread)) || \ 394 __builtin_types_compatible_p(__typeof__(expr), curl_read_callback) || \ 395 _curl_callback_compatible((expr), _curl_read_callback1) || \ 396 _curl_callback_compatible((expr), _curl_read_callback2) || \ 397 _curl_callback_compatible((expr), _curl_read_callback3) || \ 398 _curl_callback_compatible((expr), _curl_read_callback4) || \ 399 _curl_callback_compatible((expr), _curl_read_callback5) || \ 400 _curl_callback_compatible((expr), _curl_read_callback6)) 401 typedef size_t (_curl_read_callback1)(char *, size_t, size_t, void*); 402 typedef size_t (_curl_read_callback2)(char *, size_t, size_t, const void*); 403 typedef size_t (_curl_read_callback3)(char *, size_t, size_t, FILE*); 404 typedef size_t (_curl_read_callback4)(void *, size_t, size_t, void*); 405 typedef size_t (_curl_read_callback5)(void *, size_t, size_t, const void*); 406 typedef size_t (_curl_read_callback6)(void *, size_t, size_t, FILE*); 407 408 /* evaluates to true if expr is of type curl_write_callback or "similar" */ 409 #define _curl_is_write_cb(expr) \ 410 (_curl_is_read_cb(expr) || \ 411 __builtin_types_compatible_p(__typeof__(expr), __typeof__(fwrite)) || \ 412 __builtin_types_compatible_p(__typeof__(expr), curl_write_callback) || \ 413 _curl_callback_compatible((expr), _curl_write_callback1) || \ 414 _curl_callback_compatible((expr), _curl_write_callback2) || \ 415 _curl_callback_compatible((expr), _curl_write_callback3) || \ 416 _curl_callback_compatible((expr), _curl_write_callback4) || \ 417 _curl_callback_compatible((expr), _curl_write_callback5) || \ 418 _curl_callback_compatible((expr), _curl_write_callback6)) 419 typedef size_t (_curl_write_callback1)(const char *, size_t, size_t, void*); 420 typedef size_t (_curl_write_callback2)(const char *, size_t, size_t, 421 const void*); 422 typedef size_t (_curl_write_callback3)(const char *, size_t, size_t, FILE*); 423 typedef size_t (_curl_write_callback4)(const void *, size_t, size_t, void*); 424 typedef size_t (_curl_write_callback5)(const void *, size_t, size_t, 425 const void*); 426 typedef size_t (_curl_write_callback6)(const void *, size_t, size_t, FILE*); 427 428 /* evaluates to true if expr is of type curl_ioctl_callback or "similar" */ 429 #define _curl_is_ioctl_cb(expr) \ 430 (_curl_is_NULL(expr) || \ 431 __builtin_types_compatible_p(__typeof__(expr), curl_ioctl_callback) || \ 432 _curl_callback_compatible((expr), _curl_ioctl_callback1) || \ 433 _curl_callback_compatible((expr), _curl_ioctl_callback2) || \ 434 _curl_callback_compatible((expr), _curl_ioctl_callback3) || \ 435 _curl_callback_compatible((expr), _curl_ioctl_callback4)) 436 typedef curlioerr (_curl_ioctl_callback1)(CURL *, int, void*); 437 typedef curlioerr (_curl_ioctl_callback2)(CURL *, int, const void*); 438 typedef curlioerr (_curl_ioctl_callback3)(CURL *, curliocmd, void*); 439 typedef curlioerr (_curl_ioctl_callback4)(CURL *, curliocmd, const void*); 440 441 /* evaluates to true if expr is of type curl_sockopt_callback or "similar" */ 442 #define _curl_is_sockopt_cb(expr) \ 443 (_curl_is_NULL(expr) || \ 444 __builtin_types_compatible_p(__typeof__(expr), curl_sockopt_callback) || \ 445 _curl_callback_compatible((expr), _curl_sockopt_callback1) || \ 446 _curl_callback_compatible((expr), _curl_sockopt_callback2)) 447 typedef int (_curl_sockopt_callback1)(void *, curl_socket_t, curlsocktype); 448 typedef int (_curl_sockopt_callback2)(const void *, curl_socket_t, 449 curlsocktype); 450 451 /* evaluates to true if expr is of type curl_opensocket_callback or "similar" */ 452 #define _curl_is_opensocket_cb(expr) \ 453 (_curl_is_NULL(expr) || \ 454 __builtin_types_compatible_p(__typeof__(expr), curl_opensocket_callback) ||\ 455 _curl_callback_compatible((expr), _curl_opensocket_callback1) || \ 456 _curl_callback_compatible((expr), _curl_opensocket_callback2) || \ 457 _curl_callback_compatible((expr), _curl_opensocket_callback3) || \ 458 _curl_callback_compatible((expr), _curl_opensocket_callback4)) 459 typedef curl_socket_t (_curl_opensocket_callback1) 460 (void *, curlsocktype, struct curl_sockaddr *); 461 typedef curl_socket_t (_curl_opensocket_callback2) 462 (void *, curlsocktype, const struct curl_sockaddr *); 463 typedef curl_socket_t (_curl_opensocket_callback3) 464 (const void *, curlsocktype, struct curl_sockaddr *); 465 typedef curl_socket_t (_curl_opensocket_callback4) 466 (const void *, curlsocktype, const struct curl_sockaddr *); 467 468 /* evaluates to true if expr is of type curl_progress_callback or "similar" */ 469 #define _curl_is_progress_cb(expr) \ 470 (_curl_is_NULL(expr) || \ 471 __builtin_types_compatible_p(__typeof__(expr), curl_progress_callback) || \ 472 _curl_callback_compatible((expr), _curl_progress_callback1) || \ 473 _curl_callback_compatible((expr), _curl_progress_callback2)) 474 typedef int (_curl_progress_callback1)(void *, 475 double, double, double, double); 476 typedef int (_curl_progress_callback2)(const void *, 477 double, double, double, double); 478 479 /* evaluates to true if expr is of type curl_debug_callback or "similar" */ 480 #define _curl_is_debug_cb(expr) \ 481 (_curl_is_NULL(expr) || \ 482 __builtin_types_compatible_p(__typeof__(expr), curl_debug_callback) || \ 483 _curl_callback_compatible((expr), _curl_debug_callback1) || \ 484 _curl_callback_compatible((expr), _curl_debug_callback2) || \ 485 _curl_callback_compatible((expr), _curl_debug_callback3) || \ 486 _curl_callback_compatible((expr), _curl_debug_callback4)) 487 typedef int (_curl_debug_callback1) (CURL *, 488 curl_infotype, char *, size_t, void *); 489 typedef int (_curl_debug_callback2) (CURL *, 490 curl_infotype, char *, size_t, const void *); 491 typedef int (_curl_debug_callback3) (CURL *, 492 curl_infotype, const char *, size_t, void *); 493 typedef int (_curl_debug_callback4) (CURL *, 494 curl_infotype, const char *, size_t, const void *); 495 496 /* evaluates to true if expr is of type curl_ssl_ctx_callback or "similar" */ 497 /* this is getting even messier... */ 498 #define _curl_is_ssl_ctx_cb(expr) \ 499 (_curl_is_NULL(expr) || \ 500 __builtin_types_compatible_p(__typeof__(expr), curl_ssl_ctx_callback) || \ 501 _curl_callback_compatible((expr), _curl_ssl_ctx_callback1) || \ 502 _curl_callback_compatible((expr), _curl_ssl_ctx_callback2) || \ 503 _curl_callback_compatible((expr), _curl_ssl_ctx_callback3) || \ 504 _curl_callback_compatible((expr), _curl_ssl_ctx_callback4) || \ 505 _curl_callback_compatible((expr), _curl_ssl_ctx_callback5) || \ 506 _curl_callback_compatible((expr), _curl_ssl_ctx_callback6) || \ 507 _curl_callback_compatible((expr), _curl_ssl_ctx_callback7) || \ 508 _curl_callback_compatible((expr), _curl_ssl_ctx_callback8)) 509 typedef CURLcode (_curl_ssl_ctx_callback1)(CURL *, void *, void *); 510 typedef CURLcode (_curl_ssl_ctx_callback2)(CURL *, void *, const void *); 511 typedef CURLcode (_curl_ssl_ctx_callback3)(CURL *, const void *, void *); 512 typedef CURLcode (_curl_ssl_ctx_callback4)(CURL *, const void *, const void *); 513 #ifdef HEADER_SSL_H 514 /* hack: if we included OpenSSL's ssl.h, we know about SSL_CTX 515 * this will of course break if we're included before OpenSSL headers... 516 */ 517 typedef CURLcode (_curl_ssl_ctx_callback5)(CURL *, SSL_CTX, void *); 518 typedef CURLcode (_curl_ssl_ctx_callback6)(CURL *, SSL_CTX, const void *); 519 typedef CURLcode (_curl_ssl_ctx_callback7)(CURL *, const SSL_CTX, void *); 520 typedef CURLcode (_curl_ssl_ctx_callback8)(CURL *, const SSL_CTX, const void *); 521 #else 522 typedef _curl_ssl_ctx_callback1 _curl_ssl_ctx_callback5; 523 typedef _curl_ssl_ctx_callback1 _curl_ssl_ctx_callback6; 524 typedef _curl_ssl_ctx_callback1 _curl_ssl_ctx_callback7; 525 typedef _curl_ssl_ctx_callback1 _curl_ssl_ctx_callback8; 526 #endif 527 528 /* evaluates to true if expr is of type curl_conv_callback or "similar" */ 529 #define _curl_is_conv_cb(expr) \ 530 (_curl_is_NULL(expr) || \ 531 __builtin_types_compatible_p(__typeof__(expr), curl_conv_callback) || \ 532 _curl_callback_compatible((expr), _curl_conv_callback1) || \ 533 _curl_callback_compatible((expr), _curl_conv_callback2) || \ 534 _curl_callback_compatible((expr), _curl_conv_callback3) || \ 535 _curl_callback_compatible((expr), _curl_conv_callback4)) 536 typedef CURLcode (*_curl_conv_callback1)(char *, size_t length); 537 typedef CURLcode (*_curl_conv_callback2)(const char *, size_t length); 538 typedef CURLcode (*_curl_conv_callback3)(void *, size_t length); 539 typedef CURLcode (*_curl_conv_callback4)(const void *, size_t length); 540 541 /* evaluates to true if expr is of type curl_seek_callback or "similar" */ 542 #define _curl_is_seek_cb(expr) \ 543 (_curl_is_NULL(expr) || \ 544 __builtin_types_compatible_p(__typeof__(expr), curl_seek_callback) || \ 545 _curl_callback_compatible((expr), _curl_seek_callback1) || \ 546 _curl_callback_compatible((expr), _curl_seek_callback2)) 547 typedef CURLcode (*_curl_seek_callback1)(void *, curl_off_t, int); 548 typedef CURLcode (*_curl_seek_callback2)(const void *, curl_off_t, int); 549 550 551 #endif /* __CURL_TYPECHECK_GCC_H */ 552
