1#ifndef __CURL_TYPECHECK_GCC_H 2#define __CURL_TYPECHECK_GCC_H 3/*************************************************************************** 4 * _ _ ____ _ 5 * Project ___| | | | _ \| | 6 * / __| | | | |_) | | 7 * | (__| |_| | _ <| |___ 8 * \___|\___/|_| \_\_____| 9 * 10 * Copyright (C) 1998 - 2012, 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_CURL_WARNING(_curl_easy_setopt_err_long, 149 "curl_easy_setopt expects a long argument for this option") 150_CURL_WARNING(_curl_easy_setopt_err_curl_off_t, 151 "curl_easy_setopt expects a curl_off_t argument for this option") 152_CURL_WARNING(_curl_easy_setopt_err_string, 153 "curl_easy_setopt expects a " 154 "string (char* or char[]) argument for this option" 155 ) 156_CURL_WARNING(_curl_easy_setopt_err_write_callback, 157 "curl_easy_setopt expects a curl_write_callback argument for this option") 158_CURL_WARNING(_curl_easy_setopt_err_read_cb, 159 "curl_easy_setopt expects a curl_read_callback argument for this option") 160_CURL_WARNING(_curl_easy_setopt_err_ioctl_cb, 161 "curl_easy_setopt expects a curl_ioctl_callback argument for this option") 162_CURL_WARNING(_curl_easy_setopt_err_sockopt_cb, 163 "curl_easy_setopt expects a curl_sockopt_callback argument for this option") 164_CURL_WARNING(_curl_easy_setopt_err_opensocket_cb, 165 "curl_easy_setopt expects a " 166 "curl_opensocket_callback argument for this option" 167 ) 168_CURL_WARNING(_curl_easy_setopt_err_progress_cb, 169 "curl_easy_setopt expects a curl_progress_callback argument for this option") 170_CURL_WARNING(_curl_easy_setopt_err_debug_cb, 171 "curl_easy_setopt expects a curl_debug_callback argument for this option") 172_CURL_WARNING(_curl_easy_setopt_err_ssl_ctx_cb, 173 "curl_easy_setopt expects a curl_ssl_ctx_callback argument for this option") 174_CURL_WARNING(_curl_easy_setopt_err_conv_cb, 175 "curl_easy_setopt expects a curl_conv_callback argument for this option") 176_CURL_WARNING(_curl_easy_setopt_err_seek_cb, 177 "curl_easy_setopt expects a curl_seek_callback argument for this option") 178_CURL_WARNING(_curl_easy_setopt_err_cb_data, 179 "curl_easy_setopt expects a " 180 "private data pointer as argument for this option") 181_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_CURL_WARNING(_curl_easy_setopt_err_FILE, 185 "curl_easy_setopt expects a FILE* argument for this option") 186_CURL_WARNING(_curl_easy_setopt_err_postfields, 187 "curl_easy_setopt expects a void* or char* argument for this option") 188_CURL_WARNING(_curl_easy_setopt_err_curl_httpost, 189 "curl_easy_setopt expects a struct curl_httppost* argument for this option") 190_CURL_WARNING(_curl_easy_setopt_err_curl_slist, 191 "curl_easy_setopt expects a struct curl_slist* argument for this option") 192_CURL_WARNING(_curl_easy_setopt_err_CURLSH, 193 "curl_easy_setopt expects a CURLSH* argument for this option") 194 195_CURL_WARNING(_curl_easy_getinfo_err_string, 196 "curl_easy_getinfo expects a pointer to char * for this info") 197_CURL_WARNING(_curl_easy_getinfo_err_long, 198 "curl_easy_getinfo expects a pointer to long for this info") 199_CURL_WARNING(_curl_easy_getinfo_err_double, 200 "curl_easy_getinfo expects a pointer to double for this info") 201_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 0) 268 269/* evaluates to true if option takes a curl_write_callback argument */ 270#define _curl_is_write_cb_option(option) \ 271 ((option) == CURLOPT_HEADERFUNCTION || \ 272 (option) == CURLOPT_WRITEFUNCTION) 273 274/* evaluates to true if option takes a curl_conv_callback argument */ 275#define _curl_is_conv_cb_option(option) \ 276 ((option) == CURLOPT_CONV_TO_NETWORK_FUNCTION || \ 277 (option) == CURLOPT_CONV_FROM_NETWORK_FUNCTION || \ 278 (option) == CURLOPT_CONV_FROM_UTF8_FUNCTION) 279 280/* evaluates to true if option takes a data argument to pass to a callback */ 281#define _curl_is_cb_data_option(option) \ 282 ((option) == CURLOPT_WRITEDATA || \ 283 (option) == CURLOPT_READDATA || \ 284 (option) == CURLOPT_IOCTLDATA || \ 285 (option) == CURLOPT_SOCKOPTDATA || \ 286 (option) == CURLOPT_OPENSOCKETDATA || \ 287 (option) == CURLOPT_PROGRESSDATA || \ 288 (option) == CURLOPT_WRITEHEADER || \ 289 (option) == CURLOPT_DEBUGDATA || \ 290 (option) == CURLOPT_SSL_CTX_DATA || \ 291 (option) == CURLOPT_SEEKDATA || \ 292 (option) == CURLOPT_PRIVATE || \ 293 (option) == CURLOPT_SSH_KEYDATA || \ 294 (option) == CURLOPT_INTERLEAVEDATA || \ 295 (option) == CURLOPT_CHUNK_DATA || \ 296 (option) == CURLOPT_FNMATCH_DATA || \ 297 0) 298 299/* evaluates to true if option takes a POST data argument (void* or char*) */ 300#define _curl_is_postfields_option(option) \ 301 ((option) == CURLOPT_POSTFIELDS || \ 302 (option) == CURLOPT_COPYPOSTFIELDS || \ 303 0) 304 305/* evaluates to true if option takes a struct curl_slist * argument */ 306#define _curl_is_slist_option(option) \ 307 ((option) == CURLOPT_HTTPHEADER || \ 308 (option) == CURLOPT_HTTP200ALIASES || \ 309 (option) == CURLOPT_QUOTE || \ 310 (option) == CURLOPT_POSTQUOTE || \ 311 (option) == CURLOPT_PREQUOTE || \ 312 (option) == CURLOPT_TELNETOPTIONS || \ 313 (option) == CURLOPT_MAIL_RCPT || \ 314 0) 315 316/* groups of curl_easy_getinfo infos that take the same type of argument */ 317 318/* evaluates to true if info expects a pointer to char * argument */ 319#define _curl_is_string_info(info) \ 320 (CURLINFO_STRING < (info) && (info) < CURLINFO_LONG) 321 322/* evaluates to true if info expects a pointer to long argument */ 323#define _curl_is_long_info(info) \ 324 (CURLINFO_LONG < (info) && (info) < CURLINFO_DOUBLE) 325 326/* evaluates to true if info expects a pointer to double argument */ 327#define _curl_is_double_info(info) \ 328 (CURLINFO_DOUBLE < (info) && (info) < CURLINFO_SLIST) 329 330/* true if info expects a pointer to struct curl_slist * argument */ 331#define _curl_is_slist_info(info) \ 332 (CURLINFO_SLIST < (info)) 333 334 335/* typecheck helpers -- check whether given expression has requested type*/ 336 337/* For pointers, you can use the _curl_is_ptr/_curl_is_arr macros, 338 * otherwise define a new macro. Search for __builtin_types_compatible_p 339 * in the GCC manual. 340 * NOTE: these macros MUST NOT EVALUATE their arguments! The argument is 341 * the actual expression passed to the curl_easy_setopt macro. This 342 * means that you can only apply the sizeof and __typeof__ operators, no 343 * == or whatsoever. 344 */ 345 346/* XXX: should evaluate to true iff expr is a pointer */ 347#define _curl_is_any_ptr(expr) \ 348 (sizeof(expr) == sizeof(void*)) 349 350/* evaluates to true if expr is NULL */ 351/* XXX: must not evaluate expr, so this check is not accurate */ 352#define _curl_is_NULL(expr) \ 353 (__builtin_types_compatible_p(__typeof__(expr), __typeof__(NULL))) 354 355/* evaluates to true if expr is type*, const type* or NULL */ 356#define _curl_is_ptr(expr, type) \ 357 (_curl_is_NULL(expr) || \ 358 __builtin_types_compatible_p(__typeof__(expr), type *) || \ 359 __builtin_types_compatible_p(__typeof__(expr), const type *)) 360 361/* evaluates to true if expr is one of type[], type*, NULL or const type* */ 362#define _curl_is_arr(expr, type) \ 363 (_curl_is_ptr((expr), type) || \ 364 __builtin_types_compatible_p(__typeof__(expr), type [])) 365 366/* evaluates to true if expr is a string */ 367#define _curl_is_string(expr) \ 368 (_curl_is_arr((expr), char) || \ 369 _curl_is_arr((expr), signed char) || \ 370 _curl_is_arr((expr), unsigned char)) 371 372/* evaluates to true if expr is a long (no matter the signedness) 373 * XXX: for now, int is also accepted (and therefore short and char, which 374 * are promoted to int when passed to a variadic function) */ 375#define _curl_is_long(expr) \ 376 (__builtin_types_compatible_p(__typeof__(expr), long) || \ 377 __builtin_types_compatible_p(__typeof__(expr), signed long) || \ 378 __builtin_types_compatible_p(__typeof__(expr), unsigned long) || \ 379 __builtin_types_compatible_p(__typeof__(expr), int) || \ 380 __builtin_types_compatible_p(__typeof__(expr), signed int) || \ 381 __builtin_types_compatible_p(__typeof__(expr), unsigned int) || \ 382 __builtin_types_compatible_p(__typeof__(expr), short) || \ 383 __builtin_types_compatible_p(__typeof__(expr), signed short) || \ 384 __builtin_types_compatible_p(__typeof__(expr), unsigned short) || \ 385 __builtin_types_compatible_p(__typeof__(expr), char) || \ 386 __builtin_types_compatible_p(__typeof__(expr), signed char) || \ 387 __builtin_types_compatible_p(__typeof__(expr), unsigned char)) 388 389/* evaluates to true if expr is of type curl_off_t */ 390#define _curl_is_off_t(expr) \ 391 (__builtin_types_compatible_p(__typeof__(expr), curl_off_t)) 392 393/* evaluates to true if expr is abuffer suitable for CURLOPT_ERRORBUFFER */ 394/* XXX: also check size of an char[] array? */ 395#define _curl_is_error_buffer(expr) \ 396 (_curl_is_NULL(expr) || \ 397 __builtin_types_compatible_p(__typeof__(expr), char *) || \ 398 __builtin_types_compatible_p(__typeof__(expr), char[])) 399 400/* evaluates to true if expr is of type (const) void* or (const) FILE* */ 401#if 0 402#define _curl_is_cb_data(expr) \ 403 (_curl_is_ptr((expr), void) || \ 404 _curl_is_ptr((expr), FILE)) 405#else /* be less strict */ 406#define _curl_is_cb_data(expr) \ 407 _curl_is_any_ptr(expr) 408#endif 409 410/* evaluates to true if expr is of type FILE* */ 411#define _curl_is_FILE(expr) \ 412 (__builtin_types_compatible_p(__typeof__(expr), FILE *)) 413 414/* evaluates to true if expr can be passed as POST data (void* or char*) */ 415#define _curl_is_postfields(expr) \ 416 (_curl_is_ptr((expr), void) || \ 417 _curl_is_arr((expr), char)) 418 419/* FIXME: the whole callback checking is messy... 420 * The idea is to tolerate char vs. void and const vs. not const 421 * pointers in arguments at least 422 */ 423/* helper: __builtin_types_compatible_p distinguishes between functions and 424 * function pointers, hide it */ 425#define _curl_callback_compatible(func, type) \ 426 (__builtin_types_compatible_p(__typeof__(func), type) || \ 427 __builtin_types_compatible_p(__typeof__(func), type*)) 428 429/* evaluates to true if expr is of type curl_read_callback or "similar" */ 430#define _curl_is_read_cb(expr) \ 431 (_curl_is_NULL(expr) || \ 432 __builtin_types_compatible_p(__typeof__(expr), __typeof__(fread)) || \ 433 __builtin_types_compatible_p(__typeof__(expr), curl_read_callback) || \ 434 _curl_callback_compatible((expr), _curl_read_callback1) || \ 435 _curl_callback_compatible((expr), _curl_read_callback2) || \ 436 _curl_callback_compatible((expr), _curl_read_callback3) || \ 437 _curl_callback_compatible((expr), _curl_read_callback4) || \ 438 _curl_callback_compatible((expr), _curl_read_callback5) || \ 439 _curl_callback_compatible((expr), _curl_read_callback6)) 440typedef size_t (_curl_read_callback1)(char *, size_t, size_t, void*); 441typedef size_t (_curl_read_callback2)(char *, size_t, size_t, const void*); 442typedef size_t (_curl_read_callback3)(char *, size_t, size_t, FILE*); 443typedef size_t (_curl_read_callback4)(void *, size_t, size_t, void*); 444typedef size_t (_curl_read_callback5)(void *, size_t, size_t, const void*); 445typedef size_t (_curl_read_callback6)(void *, size_t, size_t, FILE*); 446 447/* evaluates to true if expr is of type curl_write_callback or "similar" */ 448#define _curl_is_write_cb(expr) \ 449 (_curl_is_read_cb(expr) || \ 450 __builtin_types_compatible_p(__typeof__(expr), __typeof__(fwrite)) || \ 451 __builtin_types_compatible_p(__typeof__(expr), curl_write_callback) || \ 452 _curl_callback_compatible((expr), _curl_write_callback1) || \ 453 _curl_callback_compatible((expr), _curl_write_callback2) || \ 454 _curl_callback_compatible((expr), _curl_write_callback3) || \ 455 _curl_callback_compatible((expr), _curl_write_callback4) || \ 456 _curl_callback_compatible((expr), _curl_write_callback5) || \ 457 _curl_callback_compatible((expr), _curl_write_callback6)) 458typedef size_t (_curl_write_callback1)(const char *, size_t, size_t, void*); 459typedef size_t (_curl_write_callback2)(const char *, size_t, size_t, 460 const void*); 461typedef size_t (_curl_write_callback3)(const char *, size_t, size_t, FILE*); 462typedef size_t (_curl_write_callback4)(const void *, size_t, size_t, void*); 463typedef size_t (_curl_write_callback5)(const void *, size_t, size_t, 464 const void*); 465typedef size_t (_curl_write_callback6)(const void *, size_t, size_t, FILE*); 466 467/* evaluates to true if expr is of type curl_ioctl_callback or "similar" */ 468#define _curl_is_ioctl_cb(expr) \ 469 (_curl_is_NULL(expr) || \ 470 __builtin_types_compatible_p(__typeof__(expr), curl_ioctl_callback) || \ 471 _curl_callback_compatible((expr), _curl_ioctl_callback1) || \ 472 _curl_callback_compatible((expr), _curl_ioctl_callback2) || \ 473 _curl_callback_compatible((expr), _curl_ioctl_callback3) || \ 474 _curl_callback_compatible((expr), _curl_ioctl_callback4)) 475typedef curlioerr (_curl_ioctl_callback1)(CURL *, int, void*); 476typedef curlioerr (_curl_ioctl_callback2)(CURL *, int, const void*); 477typedef curlioerr (_curl_ioctl_callback3)(CURL *, curliocmd, void*); 478typedef curlioerr (_curl_ioctl_callback4)(CURL *, curliocmd, const void*); 479 480/* evaluates to true if expr is of type curl_sockopt_callback or "similar" */ 481#define _curl_is_sockopt_cb(expr) \ 482 (_curl_is_NULL(expr) || \ 483 __builtin_types_compatible_p(__typeof__(expr), curl_sockopt_callback) || \ 484 _curl_callback_compatible((expr), _curl_sockopt_callback1) || \ 485 _curl_callback_compatible((expr), _curl_sockopt_callback2)) 486typedef int (_curl_sockopt_callback1)(void *, curl_socket_t, curlsocktype); 487typedef int (_curl_sockopt_callback2)(const void *, curl_socket_t, 488 curlsocktype); 489 490/* evaluates to true if expr is of type curl_opensocket_callback or 491 "similar" */ 492#define _curl_is_opensocket_cb(expr) \ 493 (_curl_is_NULL(expr) || \ 494 __builtin_types_compatible_p(__typeof__(expr), curl_opensocket_callback) ||\ 495 _curl_callback_compatible((expr), _curl_opensocket_callback1) || \ 496 _curl_callback_compatible((expr), _curl_opensocket_callback2) || \ 497 _curl_callback_compatible((expr), _curl_opensocket_callback3) || \ 498 _curl_callback_compatible((expr), _curl_opensocket_callback4)) 499typedef curl_socket_t (_curl_opensocket_callback1) 500 (void *, curlsocktype, struct curl_sockaddr *); 501typedef curl_socket_t (_curl_opensocket_callback2) 502 (void *, curlsocktype, const struct curl_sockaddr *); 503typedef curl_socket_t (_curl_opensocket_callback3) 504 (const void *, curlsocktype, struct curl_sockaddr *); 505typedef curl_socket_t (_curl_opensocket_callback4) 506 (const void *, curlsocktype, const struct curl_sockaddr *); 507 508/* evaluates to true if expr is of type curl_progress_callback or "similar" */ 509#define _curl_is_progress_cb(expr) \ 510 (_curl_is_NULL(expr) || \ 511 __builtin_types_compatible_p(__typeof__(expr), curl_progress_callback) || \ 512 _curl_callback_compatible((expr), _curl_progress_callback1) || \ 513 _curl_callback_compatible((expr), _curl_progress_callback2)) 514typedef int (_curl_progress_callback1)(void *, 515 double, double, double, double); 516typedef int (_curl_progress_callback2)(const void *, 517 double, double, double, double); 518 519/* evaluates to true if expr is of type curl_debug_callback or "similar" */ 520#define _curl_is_debug_cb(expr) \ 521 (_curl_is_NULL(expr) || \ 522 __builtin_types_compatible_p(__typeof__(expr), curl_debug_callback) || \ 523 _curl_callback_compatible((expr), _curl_debug_callback1) || \ 524 _curl_callback_compatible((expr), _curl_debug_callback2) || \ 525 _curl_callback_compatible((expr), _curl_debug_callback3) || \ 526 _curl_callback_compatible((expr), _curl_debug_callback4) || \ 527 _curl_callback_compatible((expr), _curl_debug_callback5) || \ 528 _curl_callback_compatible((expr), _curl_debug_callback6) || \ 529 _curl_callback_compatible((expr), _curl_debug_callback7) || \ 530 _curl_callback_compatible((expr), _curl_debug_callback8)) 531typedef int (_curl_debug_callback1) (CURL *, 532 curl_infotype, char *, size_t, void *); 533typedef int (_curl_debug_callback2) (CURL *, 534 curl_infotype, char *, size_t, const void *); 535typedef int (_curl_debug_callback3) (CURL *, 536 curl_infotype, const char *, size_t, void *); 537typedef int (_curl_debug_callback4) (CURL *, 538 curl_infotype, const char *, size_t, const void *); 539typedef int (_curl_debug_callback5) (CURL *, 540 curl_infotype, unsigned char *, size_t, void *); 541typedef int (_curl_debug_callback6) (CURL *, 542 curl_infotype, unsigned char *, size_t, const void *); 543typedef int (_curl_debug_callback7) (CURL *, 544 curl_infotype, const unsigned char *, size_t, void *); 545typedef int (_curl_debug_callback8) (CURL *, 546 curl_infotype, const unsigned char *, size_t, const void *); 547 548/* evaluates to true if expr is of type curl_ssl_ctx_callback or "similar" */ 549/* this is getting even messier... */ 550#define _curl_is_ssl_ctx_cb(expr) \ 551 (_curl_is_NULL(expr) || \ 552 __builtin_types_compatible_p(__typeof__(expr), curl_ssl_ctx_callback) || \ 553 _curl_callback_compatible((expr), _curl_ssl_ctx_callback1) || \ 554 _curl_callback_compatible((expr), _curl_ssl_ctx_callback2) || \ 555 _curl_callback_compatible((expr), _curl_ssl_ctx_callback3) || \ 556 _curl_callback_compatible((expr), _curl_ssl_ctx_callback4) || \ 557 _curl_callback_compatible((expr), _curl_ssl_ctx_callback5) || \ 558 _curl_callback_compatible((expr), _curl_ssl_ctx_callback6) || \ 559 _curl_callback_compatible((expr), _curl_ssl_ctx_callback7) || \ 560 _curl_callback_compatible((expr), _curl_ssl_ctx_callback8)) 561typedef CURLcode (_curl_ssl_ctx_callback1)(CURL *, void *, void *); 562typedef CURLcode (_curl_ssl_ctx_callback2)(CURL *, void *, const void *); 563typedef CURLcode (_curl_ssl_ctx_callback3)(CURL *, const void *, void *); 564typedef CURLcode (_curl_ssl_ctx_callback4)(CURL *, const void *, const void *); 565#ifdef HEADER_SSL_H 566/* hack: if we included OpenSSL's ssl.h, we know about SSL_CTX 567 * this will of course break if we're included before OpenSSL headers... 568 */ 569typedef CURLcode (_curl_ssl_ctx_callback5)(CURL *, SSL_CTX, void *); 570typedef CURLcode (_curl_ssl_ctx_callback6)(CURL *, SSL_CTX, const void *); 571typedef CURLcode (_curl_ssl_ctx_callback7)(CURL *, const SSL_CTX, void *); 572typedef CURLcode (_curl_ssl_ctx_callback8)(CURL *, const SSL_CTX, 573 const void *); 574#else 575typedef _curl_ssl_ctx_callback1 _curl_ssl_ctx_callback5; 576typedef _curl_ssl_ctx_callback1 _curl_ssl_ctx_callback6; 577typedef _curl_ssl_ctx_callback1 _curl_ssl_ctx_callback7; 578typedef _curl_ssl_ctx_callback1 _curl_ssl_ctx_callback8; 579#endif 580 581/* evaluates to true if expr is of type curl_conv_callback or "similar" */ 582#define _curl_is_conv_cb(expr) \ 583 (_curl_is_NULL(expr) || \ 584 __builtin_types_compatible_p(__typeof__(expr), curl_conv_callback) || \ 585 _curl_callback_compatible((expr), _curl_conv_callback1) || \ 586 _curl_callback_compatible((expr), _curl_conv_callback2) || \ 587 _curl_callback_compatible((expr), _curl_conv_callback3) || \ 588 _curl_callback_compatible((expr), _curl_conv_callback4)) 589typedef CURLcode (*_curl_conv_callback1)(char *, size_t length); 590typedef CURLcode (*_curl_conv_callback2)(const char *, size_t length); 591typedef CURLcode (*_curl_conv_callback3)(void *, size_t length); 592typedef CURLcode (*_curl_conv_callback4)(const void *, size_t length); 593 594/* evaluates to true if expr is of type curl_seek_callback or "similar" */ 595#define _curl_is_seek_cb(expr) \ 596 (_curl_is_NULL(expr) || \ 597 __builtin_types_compatible_p(__typeof__(expr), curl_seek_callback) || \ 598 _curl_callback_compatible((expr), _curl_seek_callback1) || \ 599 _curl_callback_compatible((expr), _curl_seek_callback2)) 600typedef CURLcode (*_curl_seek_callback1)(void *, curl_off_t, int); 601typedef CURLcode (*_curl_seek_callback2)(const void *, curl_off_t, int); 602 603 604#endif /* __CURL_TYPECHECK_GCC_H */ 605