build-mac/curl/typecheck-gcc.h
author Edouard Tisserant
Mon, 24 Aug 2015 17:23:37 +0200
changeset 340 ff99a398d872
child 531 a7cc26cc39f2
permissions -rw-r--r--
Added Xcode project for iOS build
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#ifndef __CURL_TYPECHECK_GCC_H
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#define __CURL_TYPECHECK_GCC_H
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/***************************************************************************
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 *                                  _   _ ____  _
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 *  Project                     ___| | | |  _ \| |
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 *                             / __| | | | |_) | |
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 *                            | (__| |_| |  _ <| |___
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 *                             \___|\___/|_| \_\_____|
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 *
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 * Copyright (C) 1998 - 2014, Daniel Stenberg, <daniel@haxx.se>, et al.
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 *
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 * This software is licensed as described in the file COPYING, which
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 * you should have received as part of this distribution. The terms
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 * are also available at http://curl.haxx.se/docs/copyright.html.
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 *
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 * You may opt to use, copy, modify, merge, publish, distribute and/or sell
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 * copies of the Software, and permit persons to whom the Software is
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 * furnished to do so, under the terms of the COPYING file.
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 *
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 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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 * KIND, either express or implied.
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 *
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 ***************************************************************************/
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/* wraps curl_easy_setopt() with typechecking */
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/* To add a new kind of warning, add an
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 *   if(_curl_is_sometype_option(_curl_opt))
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 *     if(!_curl_is_sometype(value))
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 *       _curl_easy_setopt_err_sometype();
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 * block and define _curl_is_sometype_option, _curl_is_sometype and
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 * _curl_easy_setopt_err_sometype below
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 *
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 * NOTE: We use two nested 'if' statements here instead of the && operator, in
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 *       order to work around gcc bug #32061.  It affects only gcc 4.3.x/4.4.x
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 *       when compiling with -Wlogical-op.
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 *
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 * To add an option that uses the same type as an existing option, you'll just
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 * need to extend the appropriate _curl_*_option macro
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 */
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#define curl_easy_setopt(handle, option, value)                               \
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__extension__ ({                                                              \
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  __typeof__ (option) _curl_opt = option;                                     \
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  if(__builtin_constant_p(_curl_opt)) {                                       \
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    if(_curl_is_long_option(_curl_opt))                                       \
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      if(!_curl_is_long(value))                                               \
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        _curl_easy_setopt_err_long();                                         \
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    if(_curl_is_off_t_option(_curl_opt))                                      \
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      if(!_curl_is_off_t(value))                                              \
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        _curl_easy_setopt_err_curl_off_t();                                   \
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    if(_curl_is_string_option(_curl_opt))                                     \
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      if(!_curl_is_string(value))                                             \
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        _curl_easy_setopt_err_string();                                       \
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    if(_curl_is_write_cb_option(_curl_opt))                                   \
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      if(!_curl_is_write_cb(value))                                           \
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        _curl_easy_setopt_err_write_callback();                               \
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    if((_curl_opt) == CURLOPT_READFUNCTION)                                   \
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      if(!_curl_is_read_cb(value))                                            \
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        _curl_easy_setopt_err_read_cb();                                      \
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    if((_curl_opt) == CURLOPT_IOCTLFUNCTION)                                  \
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      if(!_curl_is_ioctl_cb(value))                                           \
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        _curl_easy_setopt_err_ioctl_cb();                                     \
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    if((_curl_opt) == CURLOPT_SOCKOPTFUNCTION)                                \
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      if(!_curl_is_sockopt_cb(value))                                         \
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        _curl_easy_setopt_err_sockopt_cb();                                   \
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    if((_curl_opt) == CURLOPT_OPENSOCKETFUNCTION)                             \
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      if(!_curl_is_opensocket_cb(value))                                      \
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        _curl_easy_setopt_err_opensocket_cb();                                \
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    if((_curl_opt) == CURLOPT_PROGRESSFUNCTION)                               \
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      if(!_curl_is_progress_cb(value))                                        \
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        _curl_easy_setopt_err_progress_cb();                                  \
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    if((_curl_opt) == CURLOPT_DEBUGFUNCTION)                                  \
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      if(!_curl_is_debug_cb(value))                                           \
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        _curl_easy_setopt_err_debug_cb();                                     \
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    if((_curl_opt) == CURLOPT_SSL_CTX_FUNCTION)                               \
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      if(!_curl_is_ssl_ctx_cb(value))                                         \
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        _curl_easy_setopt_err_ssl_ctx_cb();                                   \
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    if(_curl_is_conv_cb_option(_curl_opt))                                    \
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      if(!_curl_is_conv_cb(value))                                            \
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        _curl_easy_setopt_err_conv_cb();                                      \
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    if((_curl_opt) == CURLOPT_SEEKFUNCTION)                                   \
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      if(!_curl_is_seek_cb(value))                                            \
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        _curl_easy_setopt_err_seek_cb();                                      \
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    if(_curl_is_cb_data_option(_curl_opt))                                    \
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      if(!_curl_is_cb_data(value))                                            \
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        _curl_easy_setopt_err_cb_data();                                      \
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    if((_curl_opt) == CURLOPT_ERRORBUFFER)                                    \
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      if(!_curl_is_error_buffer(value))                                       \
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        _curl_easy_setopt_err_error_buffer();                                 \
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    if((_curl_opt) == CURLOPT_STDERR)                                         \
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      if(!_curl_is_FILE(value))                                               \
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        _curl_easy_setopt_err_FILE();                                         \
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    if(_curl_is_postfields_option(_curl_opt))                                 \
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      if(!_curl_is_postfields(value))                                         \
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        _curl_easy_setopt_err_postfields();                                   \
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    if((_curl_opt) == CURLOPT_HTTPPOST)                                       \
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      if(!_curl_is_arr((value), struct curl_httppost))                        \
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        _curl_easy_setopt_err_curl_httpost();                                 \
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    if(_curl_is_slist_option(_curl_opt))                                      \
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      if(!_curl_is_arr((value), struct curl_slist))                           \
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        _curl_easy_setopt_err_curl_slist();                                   \
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    if((_curl_opt) == CURLOPT_SHARE)                                          \
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      if(!_curl_is_ptr((value), CURLSH))                                      \
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        _curl_easy_setopt_err_CURLSH();                                       \
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  }                                                                           \
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  curl_easy_setopt(handle, _curl_opt, value);                                 \
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})
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/* wraps curl_easy_getinfo() with typechecking */
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/* FIXME: don't allow const pointers */
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#define curl_easy_getinfo(handle, info, arg)                                  \
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__extension__ ({                                                              \
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  __typeof__ (info) _curl_info = info;                                        \
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  if(__builtin_constant_p(_curl_info)) {                                      \
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    if(_curl_is_string_info(_curl_info))                                      \
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      if(!_curl_is_arr((arg), char *))                                        \
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        _curl_easy_getinfo_err_string();                                      \
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    if(_curl_is_long_info(_curl_info))                                        \
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      if(!_curl_is_arr((arg), long))                                          \
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        _curl_easy_getinfo_err_long();                                        \
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    if(_curl_is_double_info(_curl_info))                                      \
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      if(!_curl_is_arr((arg), double))                                        \
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        _curl_easy_getinfo_err_double();                                      \
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    if(_curl_is_slist_info(_curl_info))                                       \
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      if(!_curl_is_arr((arg), struct curl_slist *))                           \
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        _curl_easy_getinfo_err_curl_slist();                                  \
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  }                                                                           \
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  curl_easy_getinfo(handle, _curl_info, arg);                                 \
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})
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/* TODO: typechecking for curl_share_setopt() and curl_multi_setopt(),
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 * for now just make sure that the functions are called with three
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 * arguments
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 */
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#define curl_share_setopt(share,opt,param) curl_share_setopt(share,opt,param)
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#define curl_multi_setopt(handle,opt,param) curl_multi_setopt(handle,opt,param)
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/* the actual warnings, triggered by calling the _curl_easy_setopt_err*
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 * functions */
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/* To define a new warning, use _CURL_WARNING(identifier, "message") */
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#define _CURL_WARNING(id, message)                                            \
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  static void __attribute__((__warning__(message)))                           \
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  __attribute__((__unused__)) __attribute__((__noinline__))                   \
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  id(void) { __asm__(""); }
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_CURL_WARNING(_curl_easy_setopt_err_long,
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  "curl_easy_setopt expects a long argument for this option")
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_CURL_WARNING(_curl_easy_setopt_err_curl_off_t,
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  "curl_easy_setopt expects a curl_off_t argument for this option")
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_CURL_WARNING(_curl_easy_setopt_err_string,
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              "curl_easy_setopt expects a "
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              "string (char* or char[]) argument for this option"
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  )
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_CURL_WARNING(_curl_easy_setopt_err_write_callback,
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  "curl_easy_setopt expects a curl_write_callback argument for this option")
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_CURL_WARNING(_curl_easy_setopt_err_read_cb,
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  "curl_easy_setopt expects a curl_read_callback argument for this option")
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_CURL_WARNING(_curl_easy_setopt_err_ioctl_cb,
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  "curl_easy_setopt expects a curl_ioctl_callback argument for this option")
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_CURL_WARNING(_curl_easy_setopt_err_sockopt_cb,
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  "curl_easy_setopt expects a curl_sockopt_callback argument for this option")
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_CURL_WARNING(_curl_easy_setopt_err_opensocket_cb,
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              "curl_easy_setopt expects a "
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              "curl_opensocket_callback argument for this option"
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  )
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_CURL_WARNING(_curl_easy_setopt_err_progress_cb,
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  "curl_easy_setopt expects a curl_progress_callback argument for this option")
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_CURL_WARNING(_curl_easy_setopt_err_debug_cb,
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  "curl_easy_setopt expects a curl_debug_callback argument for this option")
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_CURL_WARNING(_curl_easy_setopt_err_ssl_ctx_cb,
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  "curl_easy_setopt expects a curl_ssl_ctx_callback argument for this option")
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_CURL_WARNING(_curl_easy_setopt_err_conv_cb,
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  "curl_easy_setopt expects a curl_conv_callback argument for this option")
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_CURL_WARNING(_curl_easy_setopt_err_seek_cb,
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  "curl_easy_setopt expects a curl_seek_callback argument for this option")
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_CURL_WARNING(_curl_easy_setopt_err_cb_data,
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              "curl_easy_setopt expects a "
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              "private data pointer as argument for this option")
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_CURL_WARNING(_curl_easy_setopt_err_error_buffer,
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              "curl_easy_setopt expects a "
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              "char buffer of CURL_ERROR_SIZE as argument for this option")
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_CURL_WARNING(_curl_easy_setopt_err_FILE,
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  "curl_easy_setopt expects a FILE* argument for this option")
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_CURL_WARNING(_curl_easy_setopt_err_postfields,
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  "curl_easy_setopt expects a void* or char* argument for this option")
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_CURL_WARNING(_curl_easy_setopt_err_curl_httpost,
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  "curl_easy_setopt expects a struct curl_httppost* argument for this option")
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_CURL_WARNING(_curl_easy_setopt_err_curl_slist,
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  "curl_easy_setopt expects a struct curl_slist* argument for this option")
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_CURL_WARNING(_curl_easy_setopt_err_CURLSH,
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  "curl_easy_setopt expects a CURLSH* argument for this option")
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_CURL_WARNING(_curl_easy_getinfo_err_string,
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  "curl_easy_getinfo expects a pointer to char * for this info")
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_CURL_WARNING(_curl_easy_getinfo_err_long,
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  "curl_easy_getinfo expects a pointer to long for this info")
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_CURL_WARNING(_curl_easy_getinfo_err_double,
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  "curl_easy_getinfo expects a pointer to double for this info")
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_CURL_WARNING(_curl_easy_getinfo_err_curl_slist,
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  "curl_easy_getinfo expects a pointer to struct curl_slist * for this info")
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/* groups of curl_easy_setops options that take the same type of argument */
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/* To add a new option to one of the groups, just add
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 *   (option) == CURLOPT_SOMETHING
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 * to the or-expression. If the option takes a long or curl_off_t, you don't
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 * have to do anything
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 */
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/* evaluates to true if option takes a long argument */
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#define _curl_is_long_option(option)                                          \
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  (0 < (option) && (option) < CURLOPTTYPE_OBJECTPOINT)
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#define _curl_is_off_t_option(option)                                         \
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  ((option) > CURLOPTTYPE_OFF_T)
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/* evaluates to true if option takes a char* argument */
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#define _curl_is_string_option(option)                                        \
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  ((option) == CURLOPT_URL ||                                                 \
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   (option) == CURLOPT_PROXY ||                                               \
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   (option) == CURLOPT_INTERFACE ||                                           \
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   (option) == CURLOPT_NETRC_FILE ||                                          \
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   (option) == CURLOPT_USERPWD ||                                             \
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   (option) == CURLOPT_USERNAME ||                                            \
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   (option) == CURLOPT_PASSWORD ||                                            \
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   (option) == CURLOPT_PROXYUSERPWD ||                                        \
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   (option) == CURLOPT_PROXYUSERNAME ||                                       \
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   (option) == CURLOPT_PROXYPASSWORD ||                                       \
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   (option) == CURLOPT_NOPROXY ||                                             \
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   (option) == CURLOPT_ACCEPT_ENCODING ||                                     \
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   (option) == CURLOPT_REFERER ||                                             \
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   (option) == CURLOPT_USERAGENT ||                                           \
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   (option) == CURLOPT_COOKIE ||                                              \
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   (option) == CURLOPT_COOKIEFILE ||                                          \
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   (option) == CURLOPT_COOKIEJAR ||                                           \
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   (option) == CURLOPT_COOKIELIST ||                                          \
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   (option) == CURLOPT_FTPPORT ||                                             \
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   (option) == CURLOPT_FTP_ALTERNATIVE_TO_USER ||                             \
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   (option) == CURLOPT_FTP_ACCOUNT ||                                         \
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   (option) == CURLOPT_RANGE ||                                               \
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   (option) == CURLOPT_CUSTOMREQUEST ||                                       \
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   (option) == CURLOPT_SSLCERT ||                                             \
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   (option) == CURLOPT_SSLCERTTYPE ||                                         \
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   (option) == CURLOPT_SSLKEY ||                                              \
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   (option) == CURLOPT_SSLKEYTYPE ||                                          \
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   (option) == CURLOPT_KEYPASSWD ||                                           \
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   (option) == CURLOPT_SSLENGINE ||                                           \
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   (option) == CURLOPT_CAINFO ||                                              \
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   (option) == CURLOPT_CAPATH ||                                              \
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   (option) == CURLOPT_RANDOM_FILE ||                                         \
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   (option) == CURLOPT_EGDSOCKET ||                                           \
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   (option) == CURLOPT_SSL_CIPHER_LIST ||                                     \
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   (option) == CURLOPT_KRBLEVEL ||                                            \
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   (option) == CURLOPT_SSH_HOST_PUBLIC_KEY_MD5 ||                             \
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   (option) == CURLOPT_SSH_PUBLIC_KEYFILE ||                                  \
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   (option) == CURLOPT_SSH_PRIVATE_KEYFILE ||                                 \
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   (option) == CURLOPT_CRLFILE ||                                             \
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   (option) == CURLOPT_ISSUERCERT ||                                          \
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   (option) == CURLOPT_SOCKS5_GSSAPI_SERVICE ||                               \
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   (option) == CURLOPT_SSH_KNOWNHOSTS ||                                      \
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   (option) == CURLOPT_MAIL_FROM ||                                           \
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   (option) == CURLOPT_RTSP_SESSION_ID ||                                     \
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   (option) == CURLOPT_RTSP_STREAM_URI ||                                     \
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   (option) == CURLOPT_RTSP_TRANSPORT ||                                      \
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   (option) == CURLOPT_XOAUTH2_BEARER ||                                      \
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   (option) == CURLOPT_DNS_SERVERS ||                                         \
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   (option) == CURLOPT_DNS_INTERFACE ||                                       \
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   (option) == CURLOPT_DNS_LOCAL_IP4 ||                                       \
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   (option) == CURLOPT_DNS_LOCAL_IP6 ||                                       \
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   (option) == CURLOPT_LOGIN_OPTIONS ||                                       \
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   (option) == CURLOPT_PROXY_SERVICE_NAME ||                                  \
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   (option) == CURLOPT_SERVICE_NAME ||                                        \
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   0)
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/* evaluates to true if option takes a curl_write_callback argument */
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#define _curl_is_write_cb_option(option)                                      \
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  ((option) == CURLOPT_HEADERFUNCTION ||                                      \
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   (option) == CURLOPT_WRITEFUNCTION)
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/* evaluates to true if option takes a curl_conv_callback argument */
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#define _curl_is_conv_cb_option(option)                                       \
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  ((option) == CURLOPT_CONV_TO_NETWORK_FUNCTION ||                            \
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   (option) == CURLOPT_CONV_FROM_NETWORK_FUNCTION ||                          \
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   (option) == CURLOPT_CONV_FROM_UTF8_FUNCTION)
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/* evaluates to true if option takes a data argument to pass to a callback */
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#define _curl_is_cb_data_option(option)                                       \
Edouard@340
   290
  ((option) == CURLOPT_WRITEDATA ||                                           \
Edouard@340
   291
   (option) == CURLOPT_READDATA ||                                            \
Edouard@340
   292
   (option) == CURLOPT_IOCTLDATA ||                                           \
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   293
   (option) == CURLOPT_SOCKOPTDATA ||                                         \
Edouard@340
   294
   (option) == CURLOPT_OPENSOCKETDATA ||                                      \
Edouard@340
   295
   (option) == CURLOPT_PROGRESSDATA ||                                        \
Edouard@340
   296
   (option) == CURLOPT_HEADERDATA ||                                         \
Edouard@340
   297
   (option) == CURLOPT_DEBUGDATA ||                                           \
Edouard@340
   298
   (option) == CURLOPT_SSL_CTX_DATA ||                                        \
Edouard@340
   299
   (option) == CURLOPT_SEEKDATA ||                                            \
Edouard@340
   300
   (option) == CURLOPT_PRIVATE ||                                             \
Edouard@340
   301
   (option) == CURLOPT_SSH_KEYDATA ||                                         \
Edouard@340
   302
   (option) == CURLOPT_INTERLEAVEDATA ||                                      \
Edouard@340
   303
   (option) == CURLOPT_CHUNK_DATA ||                                          \
Edouard@340
   304
   (option) == CURLOPT_FNMATCH_DATA ||                                        \
Edouard@340
   305
   0)
Edouard@340
   306
Edouard@340
   307
/* evaluates to true if option takes a POST data argument (void* or char*) */
Edouard@340
   308
#define _curl_is_postfields_option(option)                                    \
Edouard@340
   309
  ((option) == CURLOPT_POSTFIELDS ||                                          \
Edouard@340
   310
   (option) == CURLOPT_COPYPOSTFIELDS ||                                      \
Edouard@340
   311
   0)
Edouard@340
   312
Edouard@340
   313
/* evaluates to true if option takes a struct curl_slist * argument */
Edouard@340
   314
#define _curl_is_slist_option(option)                                         \
Edouard@340
   315
  ((option) == CURLOPT_HTTPHEADER ||                                          \
Edouard@340
   316
   (option) == CURLOPT_HTTP200ALIASES ||                                      \
Edouard@340
   317
   (option) == CURLOPT_QUOTE ||                                               \
Edouard@340
   318
   (option) == CURLOPT_POSTQUOTE ||                                           \
Edouard@340
   319
   (option) == CURLOPT_PREQUOTE ||                                            \
Edouard@340
   320
   (option) == CURLOPT_TELNETOPTIONS ||                                       \
Edouard@340
   321
   (option) == CURLOPT_MAIL_RCPT ||                                           \
Edouard@340
   322
   0)
Edouard@340
   323
Edouard@340
   324
/* groups of curl_easy_getinfo infos that take the same type of argument */
Edouard@340
   325
Edouard@340
   326
/* evaluates to true if info expects a pointer to char * argument */
Edouard@340
   327
#define _curl_is_string_info(info)                                            \
Edouard@340
   328
  (CURLINFO_STRING < (info) && (info) < CURLINFO_LONG)
Edouard@340
   329
Edouard@340
   330
/* evaluates to true if info expects a pointer to long argument */
Edouard@340
   331
#define _curl_is_long_info(info)                                              \
Edouard@340
   332
  (CURLINFO_LONG < (info) && (info) < CURLINFO_DOUBLE)
Edouard@340
   333
Edouard@340
   334
/* evaluates to true if info expects a pointer to double argument */
Edouard@340
   335
#define _curl_is_double_info(info)                                            \
Edouard@340
   336
  (CURLINFO_DOUBLE < (info) && (info) < CURLINFO_SLIST)
Edouard@340
   337
Edouard@340
   338
/* true if info expects a pointer to struct curl_slist * argument */
Edouard@340
   339
#define _curl_is_slist_info(info)                                             \
Edouard@340
   340
  (CURLINFO_SLIST < (info))
Edouard@340
   341
Edouard@340
   342
Edouard@340
   343
/* typecheck helpers -- check whether given expression has requested type*/
Edouard@340
   344
Edouard@340
   345
/* For pointers, you can use the _curl_is_ptr/_curl_is_arr macros,
Edouard@340
   346
 * otherwise define a new macro. Search for __builtin_types_compatible_p
Edouard@340
   347
 * in the GCC manual.
Edouard@340
   348
 * NOTE: these macros MUST NOT EVALUATE their arguments! The argument is
Edouard@340
   349
 * the actual expression passed to the curl_easy_setopt macro. This
Edouard@340
   350
 * means that you can only apply the sizeof and __typeof__ operators, no
Edouard@340
   351
 * == or whatsoever.
Edouard@340
   352
 */
Edouard@340
   353
Edouard@340
   354
/* XXX: should evaluate to true iff expr is a pointer */
Edouard@340
   355
#define _curl_is_any_ptr(expr)                                                \
Edouard@340
   356
  (sizeof(expr) == sizeof(void*))
Edouard@340
   357
Edouard@340
   358
/* evaluates to true if expr is NULL */
Edouard@340
   359
/* XXX: must not evaluate expr, so this check is not accurate */
Edouard@340
   360
#define _curl_is_NULL(expr)                                                   \
Edouard@340
   361
  (__builtin_types_compatible_p(__typeof__(expr), __typeof__(NULL)))
Edouard@340
   362
Edouard@340
   363
/* evaluates to true if expr is type*, const type* or NULL */
Edouard@340
   364
#define _curl_is_ptr(expr, type)                                              \
Edouard@340
   365
  (_curl_is_NULL(expr) ||                                                     \
Edouard@340
   366
   __builtin_types_compatible_p(__typeof__(expr), type *) ||                  \
Edouard@340
   367
   __builtin_types_compatible_p(__typeof__(expr), const type *))
Edouard@340
   368
Edouard@340
   369
/* evaluates to true if expr is one of type[], type*, NULL or const type* */
Edouard@340
   370
#define _curl_is_arr(expr, type)                                              \
Edouard@340
   371
  (_curl_is_ptr((expr), type) ||                                              \
Edouard@340
   372
   __builtin_types_compatible_p(__typeof__(expr), type []))
Edouard@340
   373
Edouard@340
   374
/* evaluates to true if expr is a string */
Edouard@340
   375
#define _curl_is_string(expr)                                                 \
Edouard@340
   376
  (_curl_is_arr((expr), char) ||                                              \
Edouard@340
   377
   _curl_is_arr((expr), signed char) ||                                       \
Edouard@340
   378
   _curl_is_arr((expr), unsigned char))
Edouard@340
   379
Edouard@340
   380
/* evaluates to true if expr is a long (no matter the signedness)
Edouard@340
   381
 * XXX: for now, int is also accepted (and therefore short and char, which
Edouard@340
   382
 * are promoted to int when passed to a variadic function) */
Edouard@340
   383
#define _curl_is_long(expr)                                                   \
Edouard@340
   384
  (__builtin_types_compatible_p(__typeof__(expr), long) ||                    \
Edouard@340
   385
   __builtin_types_compatible_p(__typeof__(expr), signed long) ||             \
Edouard@340
   386
   __builtin_types_compatible_p(__typeof__(expr), unsigned long) ||           \
Edouard@340
   387
   __builtin_types_compatible_p(__typeof__(expr), int) ||                     \
Edouard@340
   388
   __builtin_types_compatible_p(__typeof__(expr), signed int) ||              \
Edouard@340
   389
   __builtin_types_compatible_p(__typeof__(expr), unsigned int) ||            \
Edouard@340
   390
   __builtin_types_compatible_p(__typeof__(expr), short) ||                   \
Edouard@340
   391
   __builtin_types_compatible_p(__typeof__(expr), signed short) ||            \
Edouard@340
   392
   __builtin_types_compatible_p(__typeof__(expr), unsigned short) ||          \
Edouard@340
   393
   __builtin_types_compatible_p(__typeof__(expr), char) ||                    \
Edouard@340
   394
   __builtin_types_compatible_p(__typeof__(expr), signed char) ||             \
Edouard@340
   395
   __builtin_types_compatible_p(__typeof__(expr), unsigned char))
Edouard@340
   396
Edouard@340
   397
/* evaluates to true if expr is of type curl_off_t */
Edouard@340
   398
#define _curl_is_off_t(expr)                                                  \
Edouard@340
   399
  (__builtin_types_compatible_p(__typeof__(expr), curl_off_t))
Edouard@340
   400
Edouard@340
   401
/* evaluates to true if expr is abuffer suitable for CURLOPT_ERRORBUFFER */
Edouard@340
   402
/* XXX: also check size of an char[] array? */
Edouard@340
   403
#define _curl_is_error_buffer(expr)                                           \
Edouard@340
   404
  (_curl_is_NULL(expr) ||                                                     \
Edouard@340
   405
   __builtin_types_compatible_p(__typeof__(expr), char *) ||                  \
Edouard@340
   406
   __builtin_types_compatible_p(__typeof__(expr), char[]))
Edouard@340
   407
Edouard@340
   408
/* evaluates to true if expr is of type (const) void* or (const) FILE* */
Edouard@340
   409
#if 0
Edouard@340
   410
#define _curl_is_cb_data(expr)                                                \
Edouard@340
   411
  (_curl_is_ptr((expr), void) ||                                              \
Edouard@340
   412
   _curl_is_ptr((expr), FILE))
Edouard@340
   413
#else /* be less strict */
Edouard@340
   414
#define _curl_is_cb_data(expr)                                                \
Edouard@340
   415
  _curl_is_any_ptr(expr)
Edouard@340
   416
#endif
Edouard@340
   417
Edouard@340
   418
/* evaluates to true if expr is of type FILE* */
Edouard@340
   419
#define _curl_is_FILE(expr)                                                   \
Edouard@340
   420
  (__builtin_types_compatible_p(__typeof__(expr), FILE *))
Edouard@340
   421
Edouard@340
   422
/* evaluates to true if expr can be passed as POST data (void* or char*) */
Edouard@340
   423
#define _curl_is_postfields(expr)                                             \
Edouard@340
   424
  (_curl_is_ptr((expr), void) ||                                              \
Edouard@340
   425
   _curl_is_arr((expr), char))
Edouard@340
   426
Edouard@340
   427
/* FIXME: the whole callback checking is messy...
Edouard@340
   428
 * The idea is to tolerate char vs. void and const vs. not const
Edouard@340
   429
 * pointers in arguments at least
Edouard@340
   430
 */
Edouard@340
   431
/* helper: __builtin_types_compatible_p distinguishes between functions and
Edouard@340
   432
 * function pointers, hide it */
Edouard@340
   433
#define _curl_callback_compatible(func, type)                                 \
Edouard@340
   434
  (__builtin_types_compatible_p(__typeof__(func), type) ||                    \
Edouard@340
   435
   __builtin_types_compatible_p(__typeof__(func), type*))
Edouard@340
   436
Edouard@340
   437
/* evaluates to true if expr is of type curl_read_callback or "similar" */
Edouard@340
   438
#define _curl_is_read_cb(expr)                                          \
Edouard@340
   439
  (_curl_is_NULL(expr) ||                                                     \
Edouard@340
   440
   __builtin_types_compatible_p(__typeof__(expr), __typeof__(fread)) ||       \
Edouard@340
   441
   __builtin_types_compatible_p(__typeof__(expr), curl_read_callback) ||      \
Edouard@340
   442
   _curl_callback_compatible((expr), _curl_read_callback1) ||                 \
Edouard@340
   443
   _curl_callback_compatible((expr), _curl_read_callback2) ||                 \
Edouard@340
   444
   _curl_callback_compatible((expr), _curl_read_callback3) ||                 \
Edouard@340
   445
   _curl_callback_compatible((expr), _curl_read_callback4) ||                 \
Edouard@340
   446
   _curl_callback_compatible((expr), _curl_read_callback5) ||                 \
Edouard@340
   447
   _curl_callback_compatible((expr), _curl_read_callback6))
Edouard@340
   448
typedef size_t (_curl_read_callback1)(char *, size_t, size_t, void*);
Edouard@340
   449
typedef size_t (_curl_read_callback2)(char *, size_t, size_t, const void*);
Edouard@340
   450
typedef size_t (_curl_read_callback3)(char *, size_t, size_t, FILE*);
Edouard@340
   451
typedef size_t (_curl_read_callback4)(void *, size_t, size_t, void*);
Edouard@340
   452
typedef size_t (_curl_read_callback5)(void *, size_t, size_t, const void*);
Edouard@340
   453
typedef size_t (_curl_read_callback6)(void *, size_t, size_t, FILE*);
Edouard@340
   454
Edouard@340
   455
/* evaluates to true if expr is of type curl_write_callback or "similar" */
Edouard@340
   456
#define _curl_is_write_cb(expr)                                               \
Edouard@340
   457
  (_curl_is_read_cb(expr) ||                                            \
Edouard@340
   458
   __builtin_types_compatible_p(__typeof__(expr), __typeof__(fwrite)) ||      \
Edouard@340
   459
   __builtin_types_compatible_p(__typeof__(expr), curl_write_callback) ||     \
Edouard@340
   460
   _curl_callback_compatible((expr), _curl_write_callback1) ||                \
Edouard@340
   461
   _curl_callback_compatible((expr), _curl_write_callback2) ||                \
Edouard@340
   462
   _curl_callback_compatible((expr), _curl_write_callback3) ||                \
Edouard@340
   463
   _curl_callback_compatible((expr), _curl_write_callback4) ||                \
Edouard@340
   464
   _curl_callback_compatible((expr), _curl_write_callback5) ||                \
Edouard@340
   465
   _curl_callback_compatible((expr), _curl_write_callback6))
Edouard@340
   466
typedef size_t (_curl_write_callback1)(const char *, size_t, size_t, void*);
Edouard@340
   467
typedef size_t (_curl_write_callback2)(const char *, size_t, size_t,
Edouard@340
   468
                                       const void*);
Edouard@340
   469
typedef size_t (_curl_write_callback3)(const char *, size_t, size_t, FILE*);
Edouard@340
   470
typedef size_t (_curl_write_callback4)(const void *, size_t, size_t, void*);
Edouard@340
   471
typedef size_t (_curl_write_callback5)(const void *, size_t, size_t,
Edouard@340
   472
                                       const void*);
Edouard@340
   473
typedef size_t (_curl_write_callback6)(const void *, size_t, size_t, FILE*);
Edouard@340
   474
Edouard@340
   475
/* evaluates to true if expr is of type curl_ioctl_callback or "similar" */
Edouard@340
   476
#define _curl_is_ioctl_cb(expr)                                         \
Edouard@340
   477
  (_curl_is_NULL(expr) ||                                                     \
Edouard@340
   478
   __builtin_types_compatible_p(__typeof__(expr), curl_ioctl_callback) ||     \
Edouard@340
   479
   _curl_callback_compatible((expr), _curl_ioctl_callback1) ||                \
Edouard@340
   480
   _curl_callback_compatible((expr), _curl_ioctl_callback2) ||                \
Edouard@340
   481
   _curl_callback_compatible((expr), _curl_ioctl_callback3) ||                \
Edouard@340
   482
   _curl_callback_compatible((expr), _curl_ioctl_callback4))
Edouard@340
   483
typedef curlioerr (_curl_ioctl_callback1)(CURL *, int, void*);
Edouard@340
   484
typedef curlioerr (_curl_ioctl_callback2)(CURL *, int, const void*);
Edouard@340
   485
typedef curlioerr (_curl_ioctl_callback3)(CURL *, curliocmd, void*);
Edouard@340
   486
typedef curlioerr (_curl_ioctl_callback4)(CURL *, curliocmd, const void*);
Edouard@340
   487
Edouard@340
   488
/* evaluates to true if expr is of type curl_sockopt_callback or "similar" */
Edouard@340
   489
#define _curl_is_sockopt_cb(expr)                                       \
Edouard@340
   490
  (_curl_is_NULL(expr) ||                                                     \
Edouard@340
   491
   __builtin_types_compatible_p(__typeof__(expr), curl_sockopt_callback) ||   \
Edouard@340
   492
   _curl_callback_compatible((expr), _curl_sockopt_callback1) ||              \
Edouard@340
   493
   _curl_callback_compatible((expr), _curl_sockopt_callback2))
Edouard@340
   494
typedef int (_curl_sockopt_callback1)(void *, curl_socket_t, curlsocktype);
Edouard@340
   495
typedef int (_curl_sockopt_callback2)(const void *, curl_socket_t,
Edouard@340
   496
                                      curlsocktype);
Edouard@340
   497
Edouard@340
   498
/* evaluates to true if expr is of type curl_opensocket_callback or
Edouard@340
   499
   "similar" */
Edouard@340
   500
#define _curl_is_opensocket_cb(expr)                                    \
Edouard@340
   501
  (_curl_is_NULL(expr) ||                                                     \
Edouard@340
   502
   __builtin_types_compatible_p(__typeof__(expr), curl_opensocket_callback) ||\
Edouard@340
   503
   _curl_callback_compatible((expr), _curl_opensocket_callback1) ||           \
Edouard@340
   504
   _curl_callback_compatible((expr), _curl_opensocket_callback2) ||           \
Edouard@340
   505
   _curl_callback_compatible((expr), _curl_opensocket_callback3) ||           \
Edouard@340
   506
   _curl_callback_compatible((expr), _curl_opensocket_callback4))
Edouard@340
   507
typedef curl_socket_t (_curl_opensocket_callback1)
Edouard@340
   508
  (void *, curlsocktype, struct curl_sockaddr *);
Edouard@340
   509
typedef curl_socket_t (_curl_opensocket_callback2)
Edouard@340
   510
  (void *, curlsocktype, const struct curl_sockaddr *);
Edouard@340
   511
typedef curl_socket_t (_curl_opensocket_callback3)
Edouard@340
   512
  (const void *, curlsocktype, struct curl_sockaddr *);
Edouard@340
   513
typedef curl_socket_t (_curl_opensocket_callback4)
Edouard@340
   514
  (const void *, curlsocktype, const struct curl_sockaddr *);
Edouard@340
   515
Edouard@340
   516
/* evaluates to true if expr is of type curl_progress_callback or "similar" */
Edouard@340
   517
#define _curl_is_progress_cb(expr)                                      \
Edouard@340
   518
  (_curl_is_NULL(expr) ||                                                     \
Edouard@340
   519
   __builtin_types_compatible_p(__typeof__(expr), curl_progress_callback) ||  \
Edouard@340
   520
   _curl_callback_compatible((expr), _curl_progress_callback1) ||             \
Edouard@340
   521
   _curl_callback_compatible((expr), _curl_progress_callback2))
Edouard@340
   522
typedef int (_curl_progress_callback1)(void *,
Edouard@340
   523
    double, double, double, double);
Edouard@340
   524
typedef int (_curl_progress_callback2)(const void *,
Edouard@340
   525
    double, double, double, double);
Edouard@340
   526
Edouard@340
   527
/* evaluates to true if expr is of type curl_debug_callback or "similar" */
Edouard@340
   528
#define _curl_is_debug_cb(expr)                                         \
Edouard@340
   529
  (_curl_is_NULL(expr) ||                                                     \
Edouard@340
   530
   __builtin_types_compatible_p(__typeof__(expr), curl_debug_callback) ||     \
Edouard@340
   531
   _curl_callback_compatible((expr), _curl_debug_callback1) ||                \
Edouard@340
   532
   _curl_callback_compatible((expr), _curl_debug_callback2) ||                \
Edouard@340
   533
   _curl_callback_compatible((expr), _curl_debug_callback3) ||                \
Edouard@340
   534
   _curl_callback_compatible((expr), _curl_debug_callback4) ||                \
Edouard@340
   535
   _curl_callback_compatible((expr), _curl_debug_callback5) ||                \
Edouard@340
   536
   _curl_callback_compatible((expr), _curl_debug_callback6) ||                \
Edouard@340
   537
   _curl_callback_compatible((expr), _curl_debug_callback7) ||                \
Edouard@340
   538
   _curl_callback_compatible((expr), _curl_debug_callback8))
Edouard@340
   539
typedef int (_curl_debug_callback1) (CURL *,
Edouard@340
   540
    curl_infotype, char *, size_t, void *);
Edouard@340
   541
typedef int (_curl_debug_callback2) (CURL *,
Edouard@340
   542
    curl_infotype, char *, size_t, const void *);
Edouard@340
   543
typedef int (_curl_debug_callback3) (CURL *,
Edouard@340
   544
    curl_infotype, const char *, size_t, void *);
Edouard@340
   545
typedef int (_curl_debug_callback4) (CURL *,
Edouard@340
   546
    curl_infotype, const char *, size_t, const void *);
Edouard@340
   547
typedef int (_curl_debug_callback5) (CURL *,
Edouard@340
   548
    curl_infotype, unsigned char *, size_t, void *);
Edouard@340
   549
typedef int (_curl_debug_callback6) (CURL *,
Edouard@340
   550
    curl_infotype, unsigned char *, size_t, const void *);
Edouard@340
   551
typedef int (_curl_debug_callback7) (CURL *,
Edouard@340
   552
    curl_infotype, const unsigned char *, size_t, void *);
Edouard@340
   553
typedef int (_curl_debug_callback8) (CURL *,
Edouard@340
   554
    curl_infotype, const unsigned char *, size_t, const void *);
Edouard@340
   555
Edouard@340
   556
/* evaluates to true if expr is of type curl_ssl_ctx_callback or "similar" */
Edouard@340
   557
/* this is getting even messier... */
Edouard@340
   558
#define _curl_is_ssl_ctx_cb(expr)                                       \
Edouard@340
   559
  (_curl_is_NULL(expr) ||                                                     \
Edouard@340
   560
   __builtin_types_compatible_p(__typeof__(expr), curl_ssl_ctx_callback) ||   \
Edouard@340
   561
   _curl_callback_compatible((expr), _curl_ssl_ctx_callback1) ||              \
Edouard@340
   562
   _curl_callback_compatible((expr), _curl_ssl_ctx_callback2) ||              \
Edouard@340
   563
   _curl_callback_compatible((expr), _curl_ssl_ctx_callback3) ||              \
Edouard@340
   564
   _curl_callback_compatible((expr), _curl_ssl_ctx_callback4) ||              \
Edouard@340
   565
   _curl_callback_compatible((expr), _curl_ssl_ctx_callback5) ||              \
Edouard@340
   566
   _curl_callback_compatible((expr), _curl_ssl_ctx_callback6) ||              \
Edouard@340
   567
   _curl_callback_compatible((expr), _curl_ssl_ctx_callback7) ||              \
Edouard@340
   568
   _curl_callback_compatible((expr), _curl_ssl_ctx_callback8))
Edouard@340
   569
typedef CURLcode (_curl_ssl_ctx_callback1)(CURL *, void *, void *);
Edouard@340
   570
typedef CURLcode (_curl_ssl_ctx_callback2)(CURL *, void *, const void *);
Edouard@340
   571
typedef CURLcode (_curl_ssl_ctx_callback3)(CURL *, const void *, void *);
Edouard@340
   572
typedef CURLcode (_curl_ssl_ctx_callback4)(CURL *, const void *, const void *);
Edouard@340
   573
#ifdef HEADER_SSL_H
Edouard@340
   574
/* hack: if we included OpenSSL's ssl.h, we know about SSL_CTX
Edouard@340
   575
 * this will of course break if we're included before OpenSSL headers...
Edouard@340
   576
 */
Edouard@340
   577
typedef CURLcode (_curl_ssl_ctx_callback5)(CURL *, SSL_CTX, void *);
Edouard@340
   578
typedef CURLcode (_curl_ssl_ctx_callback6)(CURL *, SSL_CTX, const void *);
Edouard@340
   579
typedef CURLcode (_curl_ssl_ctx_callback7)(CURL *, const SSL_CTX, void *);
Edouard@340
   580
typedef CURLcode (_curl_ssl_ctx_callback8)(CURL *, const SSL_CTX,
Edouard@340
   581
                                           const void *);
Edouard@340
   582
#else
Edouard@340
   583
typedef _curl_ssl_ctx_callback1 _curl_ssl_ctx_callback5;
Edouard@340
   584
typedef _curl_ssl_ctx_callback1 _curl_ssl_ctx_callback6;
Edouard@340
   585
typedef _curl_ssl_ctx_callback1 _curl_ssl_ctx_callback7;
Edouard@340
   586
typedef _curl_ssl_ctx_callback1 _curl_ssl_ctx_callback8;
Edouard@340
   587
#endif
Edouard@340
   588
Edouard@340
   589
/* evaluates to true if expr is of type curl_conv_callback or "similar" */
Edouard@340
   590
#define _curl_is_conv_cb(expr)                                          \
Edouard@340
   591
  (_curl_is_NULL(expr) ||                                                     \
Edouard@340
   592
   __builtin_types_compatible_p(__typeof__(expr), curl_conv_callback) ||      \
Edouard@340
   593
   _curl_callback_compatible((expr), _curl_conv_callback1) ||                 \
Edouard@340
   594
   _curl_callback_compatible((expr), _curl_conv_callback2) ||                 \
Edouard@340
   595
   _curl_callback_compatible((expr), _curl_conv_callback3) ||                 \
Edouard@340
   596
   _curl_callback_compatible((expr), _curl_conv_callback4))
Edouard@340
   597
typedef CURLcode (*_curl_conv_callback1)(char *, size_t length);
Edouard@340
   598
typedef CURLcode (*_curl_conv_callback2)(const char *, size_t length);
Edouard@340
   599
typedef CURLcode (*_curl_conv_callback3)(void *, size_t length);
Edouard@340
   600
typedef CURLcode (*_curl_conv_callback4)(const void *, size_t length);
Edouard@340
   601
Edouard@340
   602
/* evaluates to true if expr is of type curl_seek_callback or "similar" */
Edouard@340
   603
#define _curl_is_seek_cb(expr)                                          \
Edouard@340
   604
  (_curl_is_NULL(expr) ||                                                     \
Edouard@340
   605
   __builtin_types_compatible_p(__typeof__(expr), curl_seek_callback) ||      \
Edouard@340
   606
   _curl_callback_compatible((expr), _curl_seek_callback1) ||                 \
Edouard@340
   607
   _curl_callback_compatible((expr), _curl_seek_callback2))
Edouard@340
   608
typedef CURLcode (*_curl_seek_callback1)(void *, curl_off_t, int);
Edouard@340
   609
typedef CURLcode (*_curl_seek_callback2)(const void *, curl_off_t, int);
Edouard@340
   610
Edouard@340
   611
Edouard@340
   612
#endif /* __CURL_TYPECHECK_GCC_H */