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)) 439typedef size_t (_curl_read_callback1)(char *, size_t, size_t, void*); 440typedef size_t (_curl_read_callback2)(char *, size_t, size_t, const void*); 441typedef size_t (_curl_read_callback3)(char *, size_t, size_t, FILE*); 442typedef size_t (_curl_read_callback4)(void *, size_t, size_t, void*); 443typedef size_t (_curl_read_callback5)(void *, size_t, size_t, const void*); 444typedef 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)) 457typedef size_t (_curl_write_callback1)(const char *, size_t, size_t, void*); 458typedef size_t (_curl_write_callback2)(const char *, size_t, size_t, 459 const void*); 460typedef size_t (_curl_write_callback3)(const char *, size_t, size_t, FILE*); 461typedef size_t (_curl_write_callback4)(const void *, size_t, size_t, void*); 462typedef size_t (_curl_write_callback5)(const void *, size_t, size_t, 463 const void*); 464typedef 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)) 474typedef curlioerr (_curl_ioctl_callback1)(CURL *, int, void*); 475typedef curlioerr (_curl_ioctl_callback2)(CURL *, int, const void*); 476typedef curlioerr (_curl_ioctl_callback3)(CURL *, curliocmd, void*); 477typedef 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)) 485typedef int (_curl_sockopt_callback1)(void *, curl_socket_t, curlsocktype); 486typedef 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)) 498typedef curl_socket_t (_curl_opensocket_callback1) 499 (void *, curlsocktype, struct curl_sockaddr *); 500typedef curl_socket_t (_curl_opensocket_callback2) 501 (void *, curlsocktype, const struct curl_sockaddr *); 502typedef curl_socket_t (_curl_opensocket_callback3) 503 (const void *, curlsocktype, struct curl_sockaddr *); 504typedef 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)) 513typedef int (_curl_progress_callback1)(void *, 514 double, double, double, double); 515typedef 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)) 530typedef int (_curl_debug_callback1) (CURL *, 531 curl_infotype, char *, size_t, void *); 532typedef int (_curl_debug_callback2) (CURL *, 533 curl_infotype, char *, size_t, const void *); 534typedef int (_curl_debug_callback3) (CURL *, 535 curl_infotype, const char *, size_t, void *); 536typedef int (_curl_debug_callback4) (CURL *, 537 curl_infotype, const char *, size_t, const void *); 538typedef int (_curl_debug_callback5) (CURL *, 539 curl_infotype, unsigned char *, size_t, void *); 540typedef int (_curl_debug_callback6) (CURL *, 541 curl_infotype, unsigned char *, size_t, const void *); 542typedef int (_curl_debug_callback7) (CURL *, 543 curl_infotype, const unsigned char *, size_t, void *); 544typedef 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)) 560typedef CURLcode (_curl_ssl_ctx_callback1)(CURL *, void *, void *); 561typedef CURLcode (_curl_ssl_ctx_callback2)(CURL *, void *, const void *); 562typedef CURLcode (_curl_ssl_ctx_callback3)(CURL *, const void *, void *); 563typedef 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 */ 568typedef CURLcode (_curl_ssl_ctx_callback5)(CURL *, SSL_CTX, void *); 569typedef CURLcode (_curl_ssl_ctx_callback6)(CURL *, SSL_CTX, const void *); 570typedef CURLcode (_curl_ssl_ctx_callback7)(CURL *, const SSL_CTX, void *); 571typedef CURLcode (_curl_ssl_ctx_callback8)(CURL *, const SSL_CTX, 572 const void *); 573#else 574typedef _curl_ssl_ctx_callback1 _curl_ssl_ctx_callback5; 575typedef _curl_ssl_ctx_callback1 _curl_ssl_ctx_callback6; 576typedef _curl_ssl_ctx_callback1 _curl_ssl_ctx_callback7; 577typedef _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)) 588typedef CURLcode (*_curl_conv_callback1)(char *, size_t length); 589typedef CURLcode (*_curl_conv_callback2)(const char *, size_t length); 590typedef CURLcode (*_curl_conv_callback3)(void *, size_t length); 591typedef 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)) 599typedef CURLcode (*_curl_seek_callback1)(void *, curl_off_t, int); 600typedef CURLcode (*_curl_seek_callback2)(const void *, curl_off_t, int); 601 602 603#endif /* __CURL_TYPECHECK_GCC_H */ 604