1 | #ifndef __CURL_TYPECHECK_GCC_H
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2 | #define __CURL_TYPECHECK_GCC_H
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3 | /***************************************************************************
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4 | * _ _ ____ _
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5 | * Project ___| | | | _ \| |
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6 | * / __| | | | |_) | |
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7 | * | (__| |_| | _ <| |___
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8 | * \___|\___/|_| \_\_____|
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9 | *
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10 | * Copyright (C) 1998 - 2015, Daniel Stenberg, <daniel@haxx.se>, et al.
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11 | *
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12 | * This software is licensed as described in the file COPYING, which
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13 | * you should have received as part of this distribution. The terms
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14 | * are also available at https://curl.haxx.se/docs/copyright.html.
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15 | *
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16 | * You may opt to use, copy, modify, merge, publish, distribute and/or sell
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17 | * copies of the Software, and permit persons to whom the Software is
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18 | * furnished to do so, under the terms of the COPYING file.
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19 | *
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20 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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21 | * KIND, either express or implied.
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22 | *
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23 | ***************************************************************************/
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24 |
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25 | /* wraps curl_easy_setopt() with typechecking */
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26 |
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27 | /* To add a new kind of warning, add an
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28 | * if(_curl_is_sometype_option(_curl_opt))
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29 | * if(!_curl_is_sometype(value))
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30 | * _curl_easy_setopt_err_sometype();
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31 | * block and define _curl_is_sometype_option, _curl_is_sometype and
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32 | * _curl_easy_setopt_err_sometype below
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33 | *
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34 | * NOTE: We use two nested 'if' statements here instead of the && operator, in
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35 | * order to work around gcc bug #32061. It affects only gcc 4.3.x/4.4.x
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36 | * when compiling with -Wlogical-op.
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37 | *
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38 | * To add an option that uses the same type as an existing option, you'll just
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39 | * need to extend the appropriate _curl_*_option macro
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40 | */
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41 | #define curl_easy_setopt(handle, option, value) \
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42 | __extension__ ({ \
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43 | __typeof__ (option) _curl_opt = option; \
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44 | if(__builtin_constant_p(_curl_opt)) { \
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45 | if(_curl_is_long_option(_curl_opt)) \
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46 | if(!_curl_is_long(value)) \
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47 | _curl_easy_setopt_err_long(); \
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48 | if(_curl_is_off_t_option(_curl_opt)) \
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49 | if(!_curl_is_off_t(value)) \
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50 | _curl_easy_setopt_err_curl_off_t(); \
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51 | if(_curl_is_string_option(_curl_opt)) \
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52 | if(!_curl_is_string(value)) \
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53 | _curl_easy_setopt_err_string(); \
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54 | if(_curl_is_write_cb_option(_curl_opt)) \
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55 | if(!_curl_is_write_cb(value)) \
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56 | _curl_easy_setopt_err_write_callback(); \
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57 | if((_curl_opt) == CURLOPT_READFUNCTION) \
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58 | if(!_curl_is_read_cb(value)) \
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59 | _curl_easy_setopt_err_read_cb(); \
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60 | if((_curl_opt) == CURLOPT_IOCTLFUNCTION) \
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61 | if(!_curl_is_ioctl_cb(value)) \
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62 | _curl_easy_setopt_err_ioctl_cb(); \
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63 | if((_curl_opt) == CURLOPT_SOCKOPTFUNCTION) \
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64 | if(!_curl_is_sockopt_cb(value)) \
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65 | _curl_easy_setopt_err_sockopt_cb(); \
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66 | if((_curl_opt) == CURLOPT_OPENSOCKETFUNCTION) \
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67 | if(!_curl_is_opensocket_cb(value)) \
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68 | _curl_easy_setopt_err_opensocket_cb(); \
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69 | if((_curl_opt) == CURLOPT_PROGRESSFUNCTION) \
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70 | if(!_curl_is_progress_cb(value)) \
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71 | _curl_easy_setopt_err_progress_cb(); \
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72 | if((_curl_opt) == CURLOPT_DEBUGFUNCTION) \
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73 | if(!_curl_is_debug_cb(value)) \
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74 | _curl_easy_setopt_err_debug_cb(); \
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75 | if((_curl_opt) == CURLOPT_SSL_CTX_FUNCTION) \
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76 | if(!_curl_is_ssl_ctx_cb(value)) \
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77 | _curl_easy_setopt_err_ssl_ctx_cb(); \
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78 | if(_curl_is_conv_cb_option(_curl_opt)) \
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79 | if(!_curl_is_conv_cb(value)) \
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80 | _curl_easy_setopt_err_conv_cb(); \
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81 | if((_curl_opt) == CURLOPT_SEEKFUNCTION) \
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82 | if(!_curl_is_seek_cb(value)) \
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83 | _curl_easy_setopt_err_seek_cb(); \
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84 | if(_curl_is_cb_data_option(_curl_opt)) \
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85 | if(!_curl_is_cb_data(value)) \
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86 | _curl_easy_setopt_err_cb_data(); \
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87 | if((_curl_opt) == CURLOPT_ERRORBUFFER) \
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88 | if(!_curl_is_error_buffer(value)) \
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89 | _curl_easy_setopt_err_error_buffer(); \
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90 | if((_curl_opt) == CURLOPT_STDERR) \
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91 | if(!_curl_is_FILE(value)) \
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92 | _curl_easy_setopt_err_FILE(); \
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93 | if(_curl_is_postfields_option(_curl_opt)) \
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94 | if(!_curl_is_postfields(value)) \
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95 | _curl_easy_setopt_err_postfields(); \
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96 | if((_curl_opt) == CURLOPT_HTTPPOST) \
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97 | if(!_curl_is_arr((value), struct curl_httppost)) \
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98 | _curl_easy_setopt_err_curl_httpost(); \
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99 | if(_curl_is_slist_option(_curl_opt)) \
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100 | if(!_curl_is_arr((value), struct curl_slist)) \
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101 | _curl_easy_setopt_err_curl_slist(); \
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102 | if((_curl_opt) == CURLOPT_SHARE) \
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103 | if(!_curl_is_ptr((value), CURLSH)) \
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104 | _curl_easy_setopt_err_CURLSH(); \
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105 | } \
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106 | curl_easy_setopt(handle, _curl_opt, value); \
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107 | })
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108 |
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109 | /* wraps curl_easy_getinfo() with typechecking */
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110 | /* FIXME: don't allow const pointers */
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111 | #define curl_easy_getinfo(handle, info, arg) \
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112 | __extension__ ({ \
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113 | __typeof__ (info) _curl_info = info; \
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114 | if(__builtin_constant_p(_curl_info)) { \
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115 | if(_curl_is_string_info(_curl_info)) \
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116 | if(!_curl_is_arr((arg), char *)) \
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117 | _curl_easy_getinfo_err_string(); \
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118 | if(_curl_is_long_info(_curl_info)) \
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119 | if(!_curl_is_arr((arg), long)) \
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120 | _curl_easy_getinfo_err_long(); \
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121 | if(_curl_is_double_info(_curl_info)) \
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122 | if(!_curl_is_arr((arg), double)) \
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123 | _curl_easy_getinfo_err_double(); \
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124 | if(_curl_is_slist_info(_curl_info)) \
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125 | if(!_curl_is_arr((arg), struct curl_slist *)) \
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126 | _curl_easy_getinfo_err_curl_slist(); \
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127 | } \
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128 | curl_easy_getinfo(handle, _curl_info, arg); \
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129 | })
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130 |
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131 | /* TODO: typechecking for curl_share_setopt() and curl_multi_setopt(),
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132 | * for now just make sure that the functions are called with three
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133 | * arguments
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134 | */
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135 | #define curl_share_setopt(share,opt,param) curl_share_setopt(share,opt,param)
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136 | #define curl_multi_setopt(handle,opt,param) curl_multi_setopt(handle,opt,param)
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137 |
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138 |
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139 | /* the actual warnings, triggered by calling the _curl_easy_setopt_err*
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140 | * functions */
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141 |
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142 | /* To define a new warning, use _CURL_WARNING(identifier, "message") */
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143 | #define _CURL_WARNING(id, message) \
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144 | static void __attribute__((__warning__(message))) \
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145 | __attribute__((__unused__)) __attribute__((__noinline__)) \
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146 | id(void) { __asm__(""); }
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147 |
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148 | _CURL_WARNING(_curl_easy_setopt_err_long,
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149 | "curl_easy_setopt expects a long argument for this option")
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150 | _CURL_WARNING(_curl_easy_setopt_err_curl_off_t,
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151 | "curl_easy_setopt expects a curl_off_t argument for this option")
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152 | _CURL_WARNING(_curl_easy_setopt_err_string,
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153 | "curl_easy_setopt expects a "
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154 | "string (char* or char[]) argument for this option"
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155 | )
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156 | _CURL_WARNING(_curl_easy_setopt_err_write_callback,
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157 | "curl_easy_setopt expects a curl_write_callback argument for this option")
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158 | _CURL_WARNING(_curl_easy_setopt_err_read_cb,
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159 | "curl_easy_setopt expects a curl_read_callback argument for this option")
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160 | _CURL_WARNING(_curl_easy_setopt_err_ioctl_cb,
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161 | "curl_easy_setopt expects a curl_ioctl_callback argument for this option")
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162 | _CURL_WARNING(_curl_easy_setopt_err_sockopt_cb,
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163 | "curl_easy_setopt expects a curl_sockopt_callback argument for this option")
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164 | _CURL_WARNING(_curl_easy_setopt_err_opensocket_cb,
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165 | "curl_easy_setopt expects a "
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166 | "curl_opensocket_callback argument for this option"
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167 | )
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168 | _CURL_WARNING(_curl_easy_setopt_err_progress_cb,
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169 | "curl_easy_setopt expects a curl_progress_callback argument for this option")
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170 | _CURL_WARNING(_curl_easy_setopt_err_debug_cb,
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171 | "curl_easy_setopt expects a curl_debug_callback argument for this option")
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172 | _CURL_WARNING(_curl_easy_setopt_err_ssl_ctx_cb,
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173 | "curl_easy_setopt expects a curl_ssl_ctx_callback argument for this option")
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174 | _CURL_WARNING(_curl_easy_setopt_err_conv_cb,
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175 | "curl_easy_setopt expects a curl_conv_callback argument for this option")
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176 | _CURL_WARNING(_curl_easy_setopt_err_seek_cb,
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177 | "curl_easy_setopt expects a curl_seek_callback argument for this option")
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178 | _CURL_WARNING(_curl_easy_setopt_err_cb_data,
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179 | "curl_easy_setopt expects a "
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180 | "private data pointer as argument for this option")
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181 | _CURL_WARNING(_curl_easy_setopt_err_error_buffer,
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182 | "curl_easy_setopt expects a "
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183 | "char buffer of CURL_ERROR_SIZE as argument for this option")
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184 | _CURL_WARNING(_curl_easy_setopt_err_FILE,
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185 | "curl_easy_setopt expects a FILE* argument for this option")
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186 | _CURL_WARNING(_curl_easy_setopt_err_postfields,
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187 | "curl_easy_setopt expects a void* or char* argument for this option")
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188 | _CURL_WARNING(_curl_easy_setopt_err_curl_httpost,
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189 | "curl_easy_setopt expects a struct curl_httppost* argument for this option")
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190 | _CURL_WARNING(_curl_easy_setopt_err_curl_slist,
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191 | "curl_easy_setopt expects a struct curl_slist* argument for this option")
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192 | _CURL_WARNING(_curl_easy_setopt_err_CURLSH,
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193 | "curl_easy_setopt expects a CURLSH* argument for this option")
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194 |
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195 | _CURL_WARNING(_curl_easy_getinfo_err_string,
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196 | "curl_easy_getinfo expects a pointer to char * for this info")
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197 | _CURL_WARNING(_curl_easy_getinfo_err_long,
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198 | "curl_easy_getinfo expects a pointer to long for this info")
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199 | _CURL_WARNING(_curl_easy_getinfo_err_double,
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200 | "curl_easy_getinfo expects a pointer to double for this info")
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201 | _CURL_WARNING(_curl_easy_getinfo_err_curl_slist,
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202 | "curl_easy_getinfo expects a pointer to struct curl_slist * for this info")
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203 |
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204 | /* groups of curl_easy_setops options that take the same type of argument */
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205 |
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206 | /* To add a new option to one of the groups, just add
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207 | * (option) == CURLOPT_SOMETHING
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208 | * to the or-expression. If the option takes a long or curl_off_t, you don't
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209 | * have to do anything
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210 | */
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211 |
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212 | /* evaluates to true if option takes a long argument */
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213 | #define _curl_is_long_option(option) \
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214 | (0 < (option) && (option) < CURLOPTTYPE_OBJECTPOINT)
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215 |
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216 | #define _curl_is_off_t_option(option) \
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217 | ((option) > CURLOPTTYPE_OFF_T)
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218 |
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219 | /* evaluates to true if option takes a char* argument */
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220 | #define _curl_is_string_option(option) \
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221 | ((option) == CURLOPT_ACCEPT_ENCODING || \
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222 | (option) == CURLOPT_CAINFO || \
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223 | (option) == CURLOPT_CAPATH || \
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224 | (option) == CURLOPT_COOKIE || \
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225 | (option) == CURLOPT_COOKIEFILE || \
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226 | (option) == CURLOPT_COOKIEJAR || \
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227 | (option) == CURLOPT_COOKIELIST || \
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228 | (option) == CURLOPT_CRLFILE || \
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229 | (option) == CURLOPT_CUSTOMREQUEST || \
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230 | (option) == CURLOPT_DEFAULT_PROTOCOL || \
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231 | (option) == CURLOPT_DNS_INTERFACE || \
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232 | (option) == CURLOPT_DNS_LOCAL_IP4 || \
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233 | (option) == CURLOPT_DNS_LOCAL_IP6 || \
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234 | (option) == CURLOPT_DNS_SERVERS || \
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235 | (option) == CURLOPT_EGDSOCKET || \
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236 | (option) == CURLOPT_FTPPORT || \
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237 | (option) == CURLOPT_FTP_ACCOUNT || \
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238 | (option) == CURLOPT_FTP_ALTERNATIVE_TO_USER || \
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239 | (option) == CURLOPT_INTERFACE || \
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240 | (option) == CURLOPT_ISSUERCERT || \
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241 | (option) == CURLOPT_KEYPASSWD || \
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242 | (option) == CURLOPT_KRBLEVEL || \
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243 | (option) == CURLOPT_LOGIN_OPTIONS || \
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244 | (option) == CURLOPT_MAIL_AUTH || \
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245 | (option) == CURLOPT_MAIL_FROM || \
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246 | (option) == CURLOPT_NETRC_FILE || \
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247 | (option) == CURLOPT_NOPROXY || \
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248 | (option) == CURLOPT_PASSWORD || \
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249 | (option) == CURLOPT_PINNEDPUBLICKEY || \
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250 | (option) == CURLOPT_PROXY || \
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251 | (option) == CURLOPT_PROXYPASSWORD || \
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252 | (option) == CURLOPT_PROXYUSERNAME || \
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253 | (option) == CURLOPT_PROXYUSERPWD || \
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254 | (option) == CURLOPT_PROXY_SERVICE_NAME || \
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255 | (option) == CURLOPT_RANDOM_FILE || \
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256 | (option) == CURLOPT_RANGE || \
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257 | (option) == CURLOPT_REFERER || \
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258 | (option) == CURLOPT_RTSP_SESSION_ID || \
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259 | (option) == CURLOPT_RTSP_STREAM_URI || \
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260 | (option) == CURLOPT_RTSP_TRANSPORT || \
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261 | (option) == CURLOPT_SERVICE_NAME || \
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262 | (option) == CURLOPT_SOCKS5_GSSAPI_SERVICE || \
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263 | (option) == CURLOPT_SSH_HOST_PUBLIC_KEY_MD5 || \
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264 | (option) == CURLOPT_SSH_KNOWNHOSTS || \
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265 | (option) == CURLOPT_SSH_PRIVATE_KEYFILE || \
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266 | (option) == CURLOPT_SSH_PUBLIC_KEYFILE || \
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267 | (option) == CURLOPT_SSLCERT || \
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268 | (option) == CURLOPT_SSLCERTTYPE || \
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269 | (option) == CURLOPT_SSLENGINE || \
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270 | (option) == CURLOPT_SSLKEY || \
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271 | (option) == CURLOPT_SSLKEYTYPE || \
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272 | (option) == CURLOPT_SSL_CIPHER_LIST || \
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273 | (option) == CURLOPT_TLSAUTH_PASSWORD || \
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274 | (option) == CURLOPT_TLSAUTH_TYPE || \
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275 | (option) == CURLOPT_TLSAUTH_USERNAME || \
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276 | (option) == CURLOPT_UNIX_SOCKET_PATH || \
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277 | (option) == CURLOPT_URL || \
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278 | (option) == CURLOPT_USERAGENT || \
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279 | (option) == CURLOPT_USERNAME || \
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280 | (option) == CURLOPT_USERPWD || \
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281 | (option) == CURLOPT_XOAUTH2_BEARER || \
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282 | 0)
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283 |
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284 | /* evaluates to true if option takes a curl_write_callback argument */
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285 | #define _curl_is_write_cb_option(option) \
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286 | ((option) == CURLOPT_HEADERFUNCTION || \
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287 | (option) == CURLOPT_WRITEFUNCTION)
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288 |
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289 | /* evaluates to true if option takes a curl_conv_callback argument */
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290 | #define _curl_is_conv_cb_option(option) \
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291 | ((option) == CURLOPT_CONV_TO_NETWORK_FUNCTION || \
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292 | (option) == CURLOPT_CONV_FROM_NETWORK_FUNCTION || \
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293 | (option) == CURLOPT_CONV_FROM_UTF8_FUNCTION)
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294 |
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295 | /* evaluates to true if option takes a data argument to pass to a callback */
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296 | #define _curl_is_cb_data_option(option) \
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297 | ((option) == CURLOPT_CHUNK_DATA || \
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298 | (option) == CURLOPT_CLOSESOCKETDATA || \
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299 | (option) == CURLOPT_DEBUGDATA || \
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300 | (option) == CURLOPT_FNMATCH_DATA || \
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301 | (option) == CURLOPT_HEADERDATA || \
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302 | (option) == CURLOPT_INTERLEAVEDATA || \
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303 | (option) == CURLOPT_IOCTLDATA || \
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304 | (option) == CURLOPT_OPENSOCKETDATA || \
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305 | (option) == CURLOPT_PRIVATE || \
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306 | (option) == CURLOPT_PROGRESSDATA || \
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307 | (option) == CURLOPT_READDATA || \
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308 | (option) == CURLOPT_SEEKDATA || \
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309 | (option) == CURLOPT_SOCKOPTDATA || \
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310 | (option) == CURLOPT_SSH_KEYDATA || \
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311 | (option) == CURLOPT_SSL_CTX_DATA || \
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312 | (option) == CURLOPT_WRITEDATA || \
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313 | 0)
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314 |
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315 | /* evaluates to true if option takes a POST data argument (void* or char*) */
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316 | #define _curl_is_postfields_option(option) \
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317 | ((option) == CURLOPT_POSTFIELDS || \
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318 | (option) == CURLOPT_COPYPOSTFIELDS || \
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319 | 0)
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320 |
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321 | /* evaluates to true if option takes a struct curl_slist * argument */
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322 | #define _curl_is_slist_option(option) \
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323 | ((option) == CURLOPT_HTTP200ALIASES || \
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324 | (option) == CURLOPT_HTTPHEADER || \
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325 | (option) == CURLOPT_MAIL_RCPT || \
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326 | (option) == CURLOPT_POSTQUOTE || \
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327 | (option) == CURLOPT_PREQUOTE || \
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328 | (option) == CURLOPT_PROXYHEADER || \
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329 | (option) == CURLOPT_QUOTE || \
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330 | (option) == CURLOPT_RESOLVE || \
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331 | (option) == CURLOPT_TELNETOPTIONS || \
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332 | 0)
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333 |
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334 | /* groups of curl_easy_getinfo infos that take the same type of argument */
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335 |
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336 | /* evaluates to true if info expects a pointer to char * argument */
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337 | #define _curl_is_string_info(info) \
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338 | (CURLINFO_STRING < (info) && (info) < CURLINFO_LONG)
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339 |
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340 | /* evaluates to true if info expects a pointer to long argument */
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341 | #define _curl_is_long_info(info) \
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342 | (CURLINFO_LONG < (info) && (info) < CURLINFO_DOUBLE)
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343 |
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344 | /* evaluates to true if info expects a pointer to double argument */
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345 | #define _curl_is_double_info(info) \
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346 | (CURLINFO_DOUBLE < (info) && (info) < CURLINFO_SLIST)
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347 |
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348 | /* true if info expects a pointer to struct curl_slist * argument */
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349 | #define _curl_is_slist_info(info) \
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350 | (CURLINFO_SLIST < (info))
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351 |
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352 |
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353 | /* typecheck helpers -- check whether given expression has requested type*/
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354 |
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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) \
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---|
366 | (sizeof(expr) == sizeof(void*))
|
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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) \
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---|
371 | (__builtin_types_compatible_p(__typeof__(expr), __typeof__(NULL)))
|
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372 |
|
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373 | /* evaluates to true if expr is type*, const type* or NULL */
|
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374 | #define _curl_is_ptr(expr, type) \
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375 | (_curl_is_NULL(expr) || \
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376 | __builtin_types_compatible_p(__typeof__(expr), type *) || \
|
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377 | __builtin_types_compatible_p(__typeof__(expr), const type *))
|
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378 |
|
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379 | /* evaluates to true if expr is one of type[], type*, NULL or const type* */
|
---|
380 | #define _curl_is_arr(expr, type) \
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381 | (_curl_is_ptr((expr), type) || \
|
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382 | __builtin_types_compatible_p(__typeof__(expr), type []))
|
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383 |
|
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384 | /* evaluates to true if expr is a string */
|
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385 | #define _curl_is_string(expr) \
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386 | (_curl_is_arr((expr), char) || \
|
---|
387 | _curl_is_arr((expr), signed char) || \
|
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388 | _curl_is_arr((expr), unsigned char))
|
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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) \
|
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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))
|
---|
458 | typedef size_t (_curl_read_callback1)(char *, size_t, size_t, void*);
|
---|
459 | typedef size_t (_curl_read_callback2)(char *, size_t, size_t, const void*);
|
---|
460 | typedef size_t (_curl_read_callback3)(char *, size_t, size_t, FILE*);
|
---|
461 | typedef size_t (_curl_read_callback4)(void *, size_t, size_t, void*);
|
---|
462 | typedef size_t (_curl_read_callback5)(void *, size_t, size_t, const void*);
|
---|
463 | typedef 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))
|
---|
476 | typedef size_t (_curl_write_callback1)(const char *, size_t, size_t, void*);
|
---|
477 | typedef size_t (_curl_write_callback2)(const char *, size_t, size_t,
|
---|
478 | const void*);
|
---|
479 | typedef size_t (_curl_write_callback3)(const char *, size_t, size_t, FILE*);
|
---|
480 | typedef size_t (_curl_write_callback4)(const void *, size_t, size_t, void*);
|
---|
481 | typedef size_t (_curl_write_callback5)(const void *, size_t, size_t,
|
---|
482 | const void*);
|
---|
483 | typedef 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))
|
---|
493 | typedef curlioerr (_curl_ioctl_callback1)(CURL *, int, void*);
|
---|
494 | typedef curlioerr (_curl_ioctl_callback2)(CURL *, int, const void*);
|
---|
495 | typedef curlioerr (_curl_ioctl_callback3)(CURL *, curliocmd, void*);
|
---|
496 | typedef 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))
|
---|
504 | typedef int (_curl_sockopt_callback1)(void *, curl_socket_t, curlsocktype);
|
---|
505 | typedef 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))
|
---|
517 | typedef curl_socket_t (_curl_opensocket_callback1)
|
---|
518 | (void *, curlsocktype, struct curl_sockaddr *);
|
---|
519 | typedef curl_socket_t (_curl_opensocket_callback2)
|
---|
520 | (void *, curlsocktype, const struct curl_sockaddr *);
|
---|
521 | typedef curl_socket_t (_curl_opensocket_callback3)
|
---|
522 | (const void *, curlsocktype, struct curl_sockaddr *);
|
---|
523 | typedef 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))
|
---|
532 | typedef int (_curl_progress_callback1)(void *,
|
---|
533 | double, double, double, double);
|
---|
534 | typedef 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))
|
---|
549 | typedef int (_curl_debug_callback1) (CURL *,
|
---|
550 | curl_infotype, char *, size_t, void *);
|
---|
551 | typedef int (_curl_debug_callback2) (CURL *,
|
---|
552 | curl_infotype, char *, size_t, const void *);
|
---|
553 | typedef int (_curl_debug_callback3) (CURL *,
|
---|
554 | curl_infotype, const char *, size_t, void *);
|
---|
555 | typedef int (_curl_debug_callback4) (CURL *,
|
---|
556 | curl_infotype, const char *, size_t, const void *);
|
---|
557 | typedef int (_curl_debug_callback5) (CURL *,
|
---|
558 | curl_infotype, unsigned char *, size_t, void *);
|
---|
559 | typedef int (_curl_debug_callback6) (CURL *,
|
---|
560 | curl_infotype, unsigned char *, size_t, const void *);
|
---|
561 | typedef int (_curl_debug_callback7) (CURL *,
|
---|
562 | curl_infotype, const unsigned char *, size_t, void *);
|
---|
563 | typedef 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))
|
---|
579 | typedef CURLcode (_curl_ssl_ctx_callback1)(CURL *, void *, void *);
|
---|
580 | typedef CURLcode (_curl_ssl_ctx_callback2)(CURL *, void *, const void *);
|
---|
581 | typedef CURLcode (_curl_ssl_ctx_callback3)(CURL *, const void *, void *);
|
---|
582 | typedef 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 | */
|
---|
587 | typedef CURLcode (_curl_ssl_ctx_callback5)(CURL *, SSL_CTX, void *);
|
---|
588 | typedef CURLcode (_curl_ssl_ctx_callback6)(CURL *, SSL_CTX, const void *);
|
---|
589 | typedef CURLcode (_curl_ssl_ctx_callback7)(CURL *, const SSL_CTX, void *);
|
---|
590 | typedef CURLcode (_curl_ssl_ctx_callback8)(CURL *, const SSL_CTX,
|
---|
591 | const void *);
|
---|
592 | #else
|
---|
593 | typedef _curl_ssl_ctx_callback1 _curl_ssl_ctx_callback5;
|
---|
594 | typedef _curl_ssl_ctx_callback1 _curl_ssl_ctx_callback6;
|
---|
595 | typedef _curl_ssl_ctx_callback1 _curl_ssl_ctx_callback7;
|
---|
596 | typedef _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))
|
---|
607 | typedef CURLcode (*_curl_conv_callback1)(char *, size_t length);
|
---|
608 | typedef CURLcode (*_curl_conv_callback2)(const char *, size_t length);
|
---|
609 | typedef CURLcode (*_curl_conv_callback3)(void *, size_t length);
|
---|
610 | typedef 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))
|
---|
618 | typedef CURLcode (*_curl_seek_callback1)(void *, curl_off_t, int);
|
---|
619 | typedef CURLcode (*_curl_seek_callback2)(const void *, curl_off_t, int);
|
---|
620 |
|
---|
621 |
|
---|
622 | #endif /* __CURL_TYPECHECK_GCC_H */
|
---|