1#ifndef __CURL_TYPECHECK_GCC_H 2#define __CURL_TYPECHECK_GCC_H 3/*************************************************************************** 4 * _ _ ____ _ 5 * Project ___| | | | _ \| | 6 * / __| | | | |_) | | 7 * | (__| |_| | _ <| |___ 8 * \___|\___/|_| \_\_____| 9 * 10 * Copyright (C) 1998 - 2015, 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 https://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_ACCEPT_ENCODING || \ 222 (option) == CURLOPT_CAINFO || \ 223 (option) == CURLOPT_CAPATH || \ 224 (option) == CURLOPT_COOKIE || \ 225 (option) == CURLOPT_COOKIEFILE || \ 226 (option) == CURLOPT_COOKIEJAR || \ 227 (option) == CURLOPT_COOKIELIST || \ 228 (option) == CURLOPT_CRLFILE || \ 229 (option) == CURLOPT_CUSTOMREQUEST || \ 230 (option) == CURLOPT_DEFAULT_PROTOCOL || \ 231 (option) == CURLOPT_DNS_INTERFACE || \ 232 (option) == CURLOPT_DNS_LOCAL_IP4 || \ 233 (option) == CURLOPT_DNS_LOCAL_IP6 || \ 234 (option) == CURLOPT_DNS_SERVERS || \ 235 (option) == CURLOPT_EGDSOCKET || \ 236 (option) == CURLOPT_FTPPORT || \ 237 (option) == CURLOPT_FTP_ACCOUNT || \ 238 (option) == CURLOPT_FTP_ALTERNATIVE_TO_USER || \ 239 (option) == CURLOPT_INTERFACE || \ 240 (option) == CURLOPT_ISSUERCERT || \ 241 (option) == CURLOPT_KEYPASSWD || \ 242 (option) == CURLOPT_KRBLEVEL || \ 243 (option) == CURLOPT_LOGIN_OPTIONS || \ 244 (option) == CURLOPT_MAIL_AUTH || \ 245 (option) == CURLOPT_MAIL_FROM || \ 246 (option) == CURLOPT_NETRC_FILE || \ 247 (option) == CURLOPT_NOPROXY || \ 248 (option) == CURLOPT_PASSWORD || \ 249 (option) == CURLOPT_PINNEDPUBLICKEY || \ 250 (option) == CURLOPT_PROXY || \ 251 (option) == CURLOPT_PROXYPASSWORD || \ 252 (option) == CURLOPT_PROXYUSERNAME || \ 253 (option) == CURLOPT_PROXYUSERPWD || \ 254 (option) == CURLOPT_PROXY_SERVICE_NAME || \ 255 (option) == CURLOPT_RANDOM_FILE || \ 256 (option) == CURLOPT_RANGE || \ 257 (option) == CURLOPT_REFERER || \ 258 (option) == CURLOPT_RTSP_SESSION_ID || \ 259 (option) == CURLOPT_RTSP_STREAM_URI || \ 260 (option) == CURLOPT_RTSP_TRANSPORT || \ 261 (option) == CURLOPT_SERVICE_NAME || \ 262 (option) == CURLOPT_SOCKS5_GSSAPI_SERVICE || \ 263 (option) == CURLOPT_SSH_HOST_PUBLIC_KEY_MD5 || \ 264 (option) == CURLOPT_SSH_KNOWNHOSTS || \ 265 (option) == CURLOPT_SSH_PRIVATE_KEYFILE || \ 266 (option) == CURLOPT_SSH_PUBLIC_KEYFILE || \ 267 (option) == CURLOPT_SSLCERT || \ 268 (option) == CURLOPT_SSLCERTTYPE || \ 269 (option) == CURLOPT_SSLENGINE || \ 270 (option) == CURLOPT_SSLKEY || \ 271 (option) == CURLOPT_SSLKEYTYPE || \ 272 (option) == CURLOPT_SSL_CIPHER_LIST || \ 273 (option) == CURLOPT_TLSAUTH_PASSWORD || \ 274 (option) == CURLOPT_TLSAUTH_TYPE || \ 275 (option) == CURLOPT_TLSAUTH_USERNAME || \ 276 (option) == CURLOPT_UNIX_SOCKET_PATH || \ 277 (option) == CURLOPT_URL || \ 278 (option) == CURLOPT_USERAGENT || \ 279 (option) == CURLOPT_USERNAME || \ 280 (option) == CURLOPT_USERPWD || \ 281 (option) == CURLOPT_XOAUTH2_BEARER || \ 282 0) 283 284/* evaluates to true if option takes a curl_write_callback argument */ 285#define _curl_is_write_cb_option(option) \ 286 ((option) == CURLOPT_HEADERFUNCTION || \ 287 (option) == CURLOPT_WRITEFUNCTION) 288 289/* evaluates to true if option takes a curl_conv_callback argument */ 290#define _curl_is_conv_cb_option(option) \ 291 ((option) == CURLOPT_CONV_TO_NETWORK_FUNCTION || \ 292 (option) == CURLOPT_CONV_FROM_NETWORK_FUNCTION || \ 293 (option) == CURLOPT_CONV_FROM_UTF8_FUNCTION) 294 295/* evaluates to true if option takes a data argument to pass to a callback */ 296#define _curl_is_cb_data_option(option) \ 297 ((option) == CURLOPT_CHUNK_DATA || \ 298 (option) == CURLOPT_CLOSESOCKETDATA || \ 299 (option) == CURLOPT_DEBUGDATA || \ 300 (option) == CURLOPT_FNMATCH_DATA || \ 301 (option) == CURLOPT_HEADERDATA || \ 302 (option) == CURLOPT_INTERLEAVEDATA || \ 303 (option) == CURLOPT_IOCTLDATA || \ 304 (option) == CURLOPT_OPENSOCKETDATA || \ 305 (option) == CURLOPT_PRIVATE || \ 306 (option) == CURLOPT_PROGRESSDATA || \ 307 (option) == CURLOPT_READDATA || \ 308 (option) == CURLOPT_SEEKDATA || \ 309 (option) == CURLOPT_SOCKOPTDATA || \ 310 (option) == CURLOPT_SSH_KEYDATA || \ 311 (option) == CURLOPT_SSL_CTX_DATA || \ 312 (option) == CURLOPT_WRITEDATA || \ 313 0) 314 315/* evaluates to true if option takes a POST data argument (void* or char*) */ 316#define _curl_is_postfields_option(option) \ 317 ((option) == CURLOPT_POSTFIELDS || \ 318 (option) == CURLOPT_COPYPOSTFIELDS || \ 319 0) 320 321/* evaluates to true if option takes a struct curl_slist * argument */ 322#define _curl_is_slist_option(option) \ 323 ((option) == CURLOPT_HTTP200ALIASES || \ 324 (option) == CURLOPT_HTTPHEADER || \ 325 (option) == CURLOPT_MAIL_RCPT || \ 326 (option) == CURLOPT_POSTQUOTE || \ 327 (option) == CURLOPT_PREQUOTE || \ 328 (option) == CURLOPT_PROXYHEADER || \ 329 (option) == CURLOPT_QUOTE || \ 330 (option) == CURLOPT_RESOLVE || \ 331 (option) == CURLOPT_TELNETOPTIONS || \ 332 0) 333 334/* groups of curl_easy_getinfo infos that take the same type of argument */ 335 336/* evaluates to true if info expects a pointer to char * argument */ 337#define _curl_is_string_info(info) \ 338 (CURLINFO_STRING < (info) && (info) < CURLINFO_LONG) 339 340/* evaluates to true if info expects a pointer to long argument */ 341#define _curl_is_long_info(info) \ 342 (CURLINFO_LONG < (info) && (info) < CURLINFO_DOUBLE) 343 344/* evaluates to true if info expects a pointer to double argument */ 345#define _curl_is_double_info(info) \ 346 (CURLINFO_DOUBLE < (info) && (info) < CURLINFO_SLIST) 347 348/* true if info expects a pointer to struct curl_slist * argument */ 349#define _curl_is_slist_info(info) \ 350 (CURLINFO_SLIST < (info)) 351 352 353/* typecheck helpers -- check whether given expression has requested type*/ 354 355/* For pointers, you can use the _curl_is_ptr/_curl_is_arr macros, 356 * otherwise define a new macro. Search for __builtin_types_compatible_p 357 * in the GCC manual. 358 * NOTE: these macros MUST NOT EVALUATE their arguments! The argument is 359 * the actual expression passed to the curl_easy_setopt macro. This 360 * means that you can only apply the sizeof and __typeof__ operators, no 361 * == or whatsoever. 362 */ 363 364/* XXX: should evaluate to true iff expr is a pointer */ 365#define _curl_is_any_ptr(expr) \ 366 (sizeof(expr) == sizeof(void*)) 367 368/* evaluates to true if expr is NULL */ 369/* XXX: must not evaluate expr, so this check is not accurate */ 370#define _curl_is_NULL(expr) \ 371 (__builtin_types_compatible_p(__typeof__(expr), __typeof__(NULL))) 372 373/* evaluates to true if expr is type*, const type* or NULL */ 374#define _curl_is_ptr(expr, type) \ 375 (_curl_is_NULL(expr) || \ 376 __builtin_types_compatible_p(__typeof__(expr), type *) || \ 377 __builtin_types_compatible_p(__typeof__(expr), const type *)) 378 379/* evaluates to true if expr is one of type[], type*, NULL or const type* */ 380#define _curl_is_arr(expr, type) \ 381 (_curl_is_ptr((expr), type) || \ 382 __builtin_types_compatible_p(__typeof__(expr), type [])) 383 384/* evaluates to true if expr is a string */ 385#define _curl_is_string(expr) \ 386 (_curl_is_arr((expr), char) || \ 387 _curl_is_arr((expr), signed char) || \ 388 _curl_is_arr((expr), unsigned char)) 389 390/* evaluates to true if expr is a long (no matter the signedness) 391 * XXX: for now, int is also accepted (and therefore short and char, which 392 * are promoted to int when passed to a variadic function) */ 393#define _curl_is_long(expr) \ 394 (__builtin_types_compatible_p(__typeof__(expr), long) || \ 395 __builtin_types_compatible_p(__typeof__(expr), signed long) || \ 396 __builtin_types_compatible_p(__typeof__(expr), unsigned long) || \ 397 __builtin_types_compatible_p(__typeof__(expr), int) || \ 398 __builtin_types_compatible_p(__typeof__(expr), signed int) || \ 399 __builtin_types_compatible_p(__typeof__(expr), unsigned int) || \ 400 __builtin_types_compatible_p(__typeof__(expr), short) || \ 401 __builtin_types_compatible_p(__typeof__(expr), signed short) || \ 402 __builtin_types_compatible_p(__typeof__(expr), unsigned short) || \ 403 __builtin_types_compatible_p(__typeof__(expr), char) || \ 404 __builtin_types_compatible_p(__typeof__(expr), signed char) || \ 405 __builtin_types_compatible_p(__typeof__(expr), unsigned char)) 406 407/* evaluates to true if expr is of type curl_off_t */ 408#define _curl_is_off_t(expr) \ 409 (__builtin_types_compatible_p(__typeof__(expr), curl_off_t)) 410 411/* evaluates to true if expr is abuffer suitable for CURLOPT_ERRORBUFFER */ 412/* XXX: also check size of an char[] array? */ 413#define _curl_is_error_buffer(expr) \ 414 (_curl_is_NULL(expr) || \ 415 __builtin_types_compatible_p(__typeof__(expr), char *) || \ 416 __builtin_types_compatible_p(__typeof__(expr), char[])) 417 418/* evaluates to true if expr is of type (const) void* or (const) FILE* */ 419#if 0 420#define _curl_is_cb_data(expr) \ 421 (_curl_is_ptr((expr), void) || \ 422 _curl_is_ptr((expr), FILE)) 423#else /* be less strict */ 424#define _curl_is_cb_data(expr) \ 425 _curl_is_any_ptr(expr) 426#endif 427 428/* evaluates to true if expr is of type FILE* */ 429#define _curl_is_FILE(expr) \ 430 (__builtin_types_compatible_p(__typeof__(expr), FILE *)) 431 432/* evaluates to true if expr can be passed as POST data (void* or char*) */ 433#define _curl_is_postfields(expr) \ 434 (_curl_is_ptr((expr), void) || \ 435 _curl_is_arr((expr), char)) 436 437/* FIXME: the whole callback checking is messy... 438 * The idea is to tolerate char vs. void and const vs. not const 439 * pointers in arguments at least 440 */ 441/* helper: __builtin_types_compatible_p distinguishes between functions and 442 * function pointers, hide it */ 443#define _curl_callback_compatible(func, type) \ 444 (__builtin_types_compatible_p(__typeof__(func), type) || \ 445 __builtin_types_compatible_p(__typeof__(func), type*)) 446 447/* evaluates to true if expr is of type curl_read_callback or "similar" */ 448#define _curl_is_read_cb(expr) \ 449 (_curl_is_NULL(expr) || \ 450 __builtin_types_compatible_p(__typeof__(expr), __typeof__(fread)) || \ 451 __builtin_types_compatible_p(__typeof__(expr), curl_read_callback) || \ 452 _curl_callback_compatible((expr), _curl_read_callback1) || \ 453 _curl_callback_compatible((expr), _curl_read_callback2) || \ 454 _curl_callback_compatible((expr), _curl_read_callback3) || \ 455 _curl_callback_compatible((expr), _curl_read_callback4) || \ 456 _curl_callback_compatible((expr), _curl_read_callback5) || \ 457 _curl_callback_compatible((expr), _curl_read_callback6)) 458typedef size_t (_curl_read_callback1)(char *, size_t, size_t, void*); 459typedef size_t (_curl_read_callback2)(char *, size_t, size_t, const void*); 460typedef size_t (_curl_read_callback3)(char *, size_t, size_t, FILE*); 461typedef size_t (_curl_read_callback4)(void *, size_t, size_t, void*); 462typedef size_t (_curl_read_callback5)(void *, size_t, size_t, const void*); 463typedef size_t (_curl_read_callback6)(void *, size_t, size_t, FILE*); 464 465/* evaluates to true if expr is of type curl_write_callback or "similar" */ 466#define _curl_is_write_cb(expr) \ 467 (_curl_is_read_cb(expr) || \ 468 __builtin_types_compatible_p(__typeof__(expr), __typeof__(fwrite)) || \ 469 __builtin_types_compatible_p(__typeof__(expr), curl_write_callback) || \ 470 _curl_callback_compatible((expr), _curl_write_callback1) || \ 471 _curl_callback_compatible((expr), _curl_write_callback2) || \ 472 _curl_callback_compatible((expr), _curl_write_callback3) || \ 473 _curl_callback_compatible((expr), _curl_write_callback4) || \ 474 _curl_callback_compatible((expr), _curl_write_callback5) || \ 475 _curl_callback_compatible((expr), _curl_write_callback6)) 476typedef size_t (_curl_write_callback1)(const char *, size_t, size_t, void*); 477typedef size_t (_curl_write_callback2)(const char *, size_t, size_t, 478 const void*); 479typedef size_t (_curl_write_callback3)(const char *, size_t, size_t, FILE*); 480typedef size_t (_curl_write_callback4)(const void *, size_t, size_t, void*); 481typedef size_t (_curl_write_callback5)(const void *, size_t, size_t, 482 const void*); 483typedef size_t (_curl_write_callback6)(const void *, size_t, size_t, FILE*); 484 485/* evaluates to true if expr is of type curl_ioctl_callback or "similar" */ 486#define _curl_is_ioctl_cb(expr) \ 487 (_curl_is_NULL(expr) || \ 488 __builtin_types_compatible_p(__typeof__(expr), curl_ioctl_callback) || \ 489 _curl_callback_compatible((expr), _curl_ioctl_callback1) || \ 490 _curl_callback_compatible((expr), _curl_ioctl_callback2) || \ 491 _curl_callback_compatible((expr), _curl_ioctl_callback3) || \ 492 _curl_callback_compatible((expr), _curl_ioctl_callback4)) 493typedef curlioerr (_curl_ioctl_callback1)(CURL *, int, void*); 494typedef curlioerr (_curl_ioctl_callback2)(CURL *, int, const void*); 495typedef curlioerr (_curl_ioctl_callback3)(CURL *, curliocmd, void*); 496typedef curlioerr (_curl_ioctl_callback4)(CURL *, curliocmd, const void*); 497 498/* evaluates to true if expr is of type curl_sockopt_callback or "similar" */ 499#define _curl_is_sockopt_cb(expr) \ 500 (_curl_is_NULL(expr) || \ 501 __builtin_types_compatible_p(__typeof__(expr), curl_sockopt_callback) || \ 502 _curl_callback_compatible((expr), _curl_sockopt_callback1) || \ 503 _curl_callback_compatible((expr), _curl_sockopt_callback2)) 504typedef int (_curl_sockopt_callback1)(void *, curl_socket_t, curlsocktype); 505typedef int (_curl_sockopt_callback2)(const void *, curl_socket_t, 506 curlsocktype); 507 508/* evaluates to true if expr is of type curl_opensocket_callback or 509 "similar" */ 510#define _curl_is_opensocket_cb(expr) \ 511 (_curl_is_NULL(expr) || \ 512 __builtin_types_compatible_p(__typeof__(expr), curl_opensocket_callback) ||\ 513 _curl_callback_compatible((expr), _curl_opensocket_callback1) || \ 514 _curl_callback_compatible((expr), _curl_opensocket_callback2) || \ 515 _curl_callback_compatible((expr), _curl_opensocket_callback3) || \ 516 _curl_callback_compatible((expr), _curl_opensocket_callback4)) 517typedef curl_socket_t (_curl_opensocket_callback1) 518 (void *, curlsocktype, struct curl_sockaddr *); 519typedef curl_socket_t (_curl_opensocket_callback2) 520 (void *, curlsocktype, const struct curl_sockaddr *); 521typedef curl_socket_t (_curl_opensocket_callback3) 522 (const void *, curlsocktype, struct curl_sockaddr *); 523typedef curl_socket_t (_curl_opensocket_callback4) 524 (const void *, curlsocktype, const struct curl_sockaddr *); 525 526/* evaluates to true if expr is of type curl_progress_callback or "similar" */ 527#define _curl_is_progress_cb(expr) \ 528 (_curl_is_NULL(expr) || \ 529 __builtin_types_compatible_p(__typeof__(expr), curl_progress_callback) || \ 530 _curl_callback_compatible((expr), _curl_progress_callback1) || \ 531 _curl_callback_compatible((expr), _curl_progress_callback2)) 532typedef int (_curl_progress_callback1)(void *, 533 double, double, double, double); 534typedef int (_curl_progress_callback2)(const void *, 535 double, double, double, double); 536 537/* evaluates to true if expr is of type curl_debug_callback or "similar" */ 538#define _curl_is_debug_cb(expr) \ 539 (_curl_is_NULL(expr) || \ 540 __builtin_types_compatible_p(__typeof__(expr), curl_debug_callback) || \ 541 _curl_callback_compatible((expr), _curl_debug_callback1) || \ 542 _curl_callback_compatible((expr), _curl_debug_callback2) || \ 543 _curl_callback_compatible((expr), _curl_debug_callback3) || \ 544 _curl_callback_compatible((expr), _curl_debug_callback4) || \ 545 _curl_callback_compatible((expr), _curl_debug_callback5) || \ 546 _curl_callback_compatible((expr), _curl_debug_callback6) || \ 547 _curl_callback_compatible((expr), _curl_debug_callback7) || \ 548 _curl_callback_compatible((expr), _curl_debug_callback8)) 549typedef int (_curl_debug_callback1) (CURL *, 550 curl_infotype, char *, size_t, void *); 551typedef int (_curl_debug_callback2) (CURL *, 552 curl_infotype, char *, size_t, const void *); 553typedef int (_curl_debug_callback3) (CURL *, 554 curl_infotype, const char *, size_t, void *); 555typedef int (_curl_debug_callback4) (CURL *, 556 curl_infotype, const char *, size_t, const void *); 557typedef int (_curl_debug_callback5) (CURL *, 558 curl_infotype, unsigned char *, size_t, void *); 559typedef int (_curl_debug_callback6) (CURL *, 560 curl_infotype, unsigned char *, size_t, const void *); 561typedef int (_curl_debug_callback7) (CURL *, 562 curl_infotype, const unsigned char *, size_t, void *); 563typedef int (_curl_debug_callback8) (CURL *, 564 curl_infotype, const unsigned char *, size_t, const void *); 565 566/* evaluates to true if expr is of type curl_ssl_ctx_callback or "similar" */ 567/* this is getting even messier... */ 568#define _curl_is_ssl_ctx_cb(expr) \ 569 (_curl_is_NULL(expr) || \ 570 __builtin_types_compatible_p(__typeof__(expr), curl_ssl_ctx_callback) || \ 571 _curl_callback_compatible((expr), _curl_ssl_ctx_callback1) || \ 572 _curl_callback_compatible((expr), _curl_ssl_ctx_callback2) || \ 573 _curl_callback_compatible((expr), _curl_ssl_ctx_callback3) || \ 574 _curl_callback_compatible((expr), _curl_ssl_ctx_callback4) || \ 575 _curl_callback_compatible((expr), _curl_ssl_ctx_callback5) || \ 576 _curl_callback_compatible((expr), _curl_ssl_ctx_callback6) || \ 577 _curl_callback_compatible((expr), _curl_ssl_ctx_callback7) || \ 578 _curl_callback_compatible((expr), _curl_ssl_ctx_callback8)) 579typedef CURLcode (_curl_ssl_ctx_callback1)(CURL *, void *, void *); 580typedef CURLcode (_curl_ssl_ctx_callback2)(CURL *, void *, const void *); 581typedef CURLcode (_curl_ssl_ctx_callback3)(CURL *, const void *, void *); 582typedef CURLcode (_curl_ssl_ctx_callback4)(CURL *, const void *, const void *); 583#ifdef HEADER_SSL_H 584/* hack: if we included OpenSSL's ssl.h, we know about SSL_CTX 585 * this will of course break if we're included before OpenSSL headers... 586 */ 587typedef CURLcode (_curl_ssl_ctx_callback5)(CURL *, SSL_CTX, void *); 588typedef CURLcode (_curl_ssl_ctx_callback6)(CURL *, SSL_CTX, const void *); 589typedef CURLcode (_curl_ssl_ctx_callback7)(CURL *, const SSL_CTX, void *); 590typedef CURLcode (_curl_ssl_ctx_callback8)(CURL *, const SSL_CTX, 591 const void *); 592#else 593typedef _curl_ssl_ctx_callback1 _curl_ssl_ctx_callback5; 594typedef _curl_ssl_ctx_callback1 _curl_ssl_ctx_callback6; 595typedef _curl_ssl_ctx_callback1 _curl_ssl_ctx_callback7; 596typedef _curl_ssl_ctx_callback1 _curl_ssl_ctx_callback8; 597#endif 598 599/* evaluates to true if expr is of type curl_conv_callback or "similar" */ 600#define _curl_is_conv_cb(expr) \ 601 (_curl_is_NULL(expr) || \ 602 __builtin_types_compatible_p(__typeof__(expr), curl_conv_callback) || \ 603 _curl_callback_compatible((expr), _curl_conv_callback1) || \ 604 _curl_callback_compatible((expr), _curl_conv_callback2) || \ 605 _curl_callback_compatible((expr), _curl_conv_callback3) || \ 606 _curl_callback_compatible((expr), _curl_conv_callback4)) 607typedef CURLcode (*_curl_conv_callback1)(char *, size_t length); 608typedef CURLcode (*_curl_conv_callback2)(const char *, size_t length); 609typedef CURLcode (*_curl_conv_callback3)(void *, size_t length); 610typedef CURLcode (*_curl_conv_callback4)(const void *, size_t length); 611 612/* evaluates to true if expr is of type curl_seek_callback or "similar" */ 613#define _curl_is_seek_cb(expr) \ 614 (_curl_is_NULL(expr) || \ 615 __builtin_types_compatible_p(__typeof__(expr), curl_seek_callback) || \ 616 _curl_callback_compatible((expr), _curl_seek_callback1) || \ 617 _curl_callback_compatible((expr), _curl_seek_callback2)) 618typedef CURLcode (*_curl_seek_callback1)(void *, curl_off_t, int); 619typedef CURLcode (*_curl_seek_callback2)(const void *, curl_off_t, int); 620 621 622#endif /* __CURL_TYPECHECK_GCC_H */ 623