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