Line data    Source code 
       1              : #ifndef CURLINC_TYPECHECK_GCC_H
       2              : #define CURLINC_TYPECHECK_GCC_H
       3              : /***************************************************************************
       4              :  *                                  _   _ ____  _
       5              :  *  Project                     ___| | | |  _ \| |
       6              :  *                             / __| | | | |_) | |
       7              :  *                            | (__| |_| |  _ <| |___
       8              :  *                             \___|\___/|_| \_\_____|
       9              :  *
      10              :  * Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
      11              :  *
      12              :  * This software is licensed as described in the file COPYING, which
      13              :  * you should have received as part of this distribution. The terms
      14              :  * are also available at https://curl.se/docs/copyright.html.
      15              :  *
      16              :  * You may opt to use, copy, modify, merge, publish, distribute and/or sell
      17              :  * copies of the Software, and permit persons to whom the Software is
      18              :  * furnished to do so, under the terms of the COPYING file.
      19              :  *
      20              :  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
      21              :  * KIND, either express or implied.
      22              :  *
      23              :  * SPDX-License-Identifier: curl
      24              :  *
      25              :  ***************************************************************************/
      26              : 
      27              : /* wraps curl_easy_setopt() with typechecking */
      28              : 
      29              : /* To add a new kind of warning, add an
      30              :  *   if(curlcheck_sometype_option(_curl_opt))
      31              :  *     if(!curlcheck_sometype(value))
      32              :  *       _curl_easy_setopt_err_sometype();
      33              :  * block and define curlcheck_sometype_option, curlcheck_sometype and
      34              :  * _curl_easy_setopt_err_sometype below
      35              :  *
      36              :  * NOTE: We use two nested 'if' statements here instead of the && operator, in
      37              :  *       order to work around gcc bug #32061. It affects only gcc 4.3.x/4.4.x
      38              :  *       when compiling with -Wlogical-op.
      39              :  *
      40              :  * To add an option that uses the same type as an existing option, you will
      41              :  * just need to extend the appropriate _curl_*_option macro
      42              :  */
      43              : 
      44              : #define curl_easy_setopt(handle, option, value)                         \
      45              :   __extension__({                                                       \
      46              :       if(__builtin_constant_p(option)) {                                \
      47              :         CURL_IGNORE_DEPRECATION(                                        \
      48              :           if(curlcheck_long_option(option))                             \
      49              :             if(!curlcheck_long(value))                                  \
      50              :               _curl_easy_setopt_err_long();                             \
      51              :           if(curlcheck_off_t_option(option))                            \
      52              :             if(!curlcheck_off_t(value))                                 \
      53              :               _curl_easy_setopt_err_curl_off_t();                       \
      54              :           if(curlcheck_string_option(option))                           \
      55              :             if(!curlcheck_string(value))                                \
      56              :               _curl_easy_setopt_err_string();                           \
      57              :           if((option) == CURLOPT_PRIVATE) { }                           \
      58              :           if(curlcheck_write_cb_option(option))                         \
      59              :             if(!curlcheck_write_cb(value))                              \
      60              :               _curl_easy_setopt_err_write_callback();                   \
      61              :           if(curlcheck_curl_option(option))                             \
      62              :             if(!curlcheck_curl(value))                                  \
      63              :               _curl_easy_setopt_err_curl();                             \
      64              :           if((option) == CURLOPT_RESOLVER_START_FUNCTION)               \
      65              :             if(!curlcheck_resolver_start_callback(value))               \
      66              :               _curl_easy_setopt_err_resolver_start_callback();          \
      67              :           if((option) == CURLOPT_READFUNCTION)                          \
      68              :             if(!curlcheck_read_cb(value))                               \
      69              :               _curl_easy_setopt_err_read_cb();                          \
      70              :           if((option) == CURLOPT_IOCTLFUNCTION)                         \
      71              :             if(!curlcheck_ioctl_cb(value))                              \
      72              :               _curl_easy_setopt_err_ioctl_cb();                         \
      73              :           if((option) == CURLOPT_SOCKOPTFUNCTION)                       \
      74              :             if(!curlcheck_sockopt_cb(value))                            \
      75              :               _curl_easy_setopt_err_sockopt_cb();                       \
      76              :           if((option) == CURLOPT_OPENSOCKETFUNCTION)                    \
      77              :             if(!curlcheck_opensocket_cb(value))                         \
      78              :               _curl_easy_setopt_err_opensocket_cb();                    \
      79              :           if((option) == CURLOPT_PROGRESSFUNCTION)                      \
      80              :             if(!curlcheck_progress_cb(value))                           \
      81              :               _curl_easy_setopt_err_progress_cb();                      \
      82              :           if((option) == CURLOPT_XFERINFOFUNCTION)                      \
      83              :             if(!curlcheck_xferinfo_cb(value))                           \
      84              :               _curl_easy_setopt_err_xferinfo_cb();                      \
      85              :           if((option) == CURLOPT_DEBUGFUNCTION)                         \
      86              :             if(!curlcheck_debug_cb(value))                              \
      87              :               _curl_easy_setopt_err_debug_cb();                         \
      88              :           if((option) == CURLOPT_SSL_CTX_FUNCTION)                      \
      89              :             if(!curlcheck_ssl_ctx_cb(value))                            \
      90              :               _curl_easy_setopt_err_ssl_ctx_cb();                       \
      91              :           if(curlcheck_conv_cb_option(option))                          \
      92              :             if(!curlcheck_conv_cb(value))                               \
      93              :               _curl_easy_setopt_err_conv_cb();                          \
      94              :           if((option) == CURLOPT_SEEKFUNCTION)                          \
      95              :             if(!curlcheck_seek_cb(value))                               \
      96              :               _curl_easy_setopt_err_seek_cb();                          \
      97              :           if((option) == CURLOPT_CHUNK_BGN_FUNCTION)                    \
      98              :             if(!curlcheck_chunk_bgn_cb(value))                          \
      99              :               _curl_easy_setopt_err_chunk_bgn_cb();                     \
     100              :           if((option) == CURLOPT_CHUNK_END_FUNCTION)                    \
     101              :             if(!curlcheck_chunk_end_cb(value))                          \
     102              :               _curl_easy_setopt_err_chunk_end_cb();                     \
     103              :           if((option) == CURLOPT_CLOSESOCKETFUNCTION)                   \
     104              :             if(!curlcheck_close_socket_cb(value))                       \
     105              :               _curl_easy_setopt_err_close_socket_cb();                  \
     106              :           if((option) == CURLOPT_FNMATCH_FUNCTION)                      \
     107              :             if(!curlcheck_fnmatch_cb(value))                            \
     108              :               _curl_easy_setopt_err_fnmatch_cb();                       \
     109              :           if((option) == CURLOPT_HSTSREADFUNCTION)                      \
     110              :             if(!curlcheck_hstsread_cb(value))                           \
     111              :               _curl_easy_setopt_err_hstsread_cb();                      \
     112              :           if((option) == CURLOPT_HSTSWRITEFUNCTION)                     \
     113              :             if(!curlcheck_hstswrite_cb(value))                          \
     114              :               _curl_easy_setopt_err_hstswrite_cb();                     \
     115              :           if((option) == CURLOPT_SSH_HOSTKEYFUNCTION)                   \
     116              :             if(!curlcheck_ssh_hostkey_cb(value))                        \
     117              :               _curl_easy_setopt_err_ssh_hostkey_cb();                   \
     118              :           if((option) == CURLOPT_SSH_KEYFUNCTION)                       \
     119              :             if(!curlcheck_ssh_key_cb(value))                            \
     120              :               _curl_easy_setopt_err_ssh_key_cb();                       \
     121              :           if((option) == CURLOPT_INTERLEAVEFUNCTION)                    \
     122              :             if(!curlcheck_interleave_cb(value))                         \
     123              :               _curl_easy_setopt_err_interleave_cb();                    \
     124              :           if((option) == CURLOPT_PREREQFUNCTION)                        \
     125              :             if(!curlcheck_prereq_cb(value))                             \
     126              :               _curl_easy_setopt_err_prereq_cb();                        \
     127              :           if((option) == CURLOPT_TRAILERFUNCTION)                       \
     128              :             if(!curlcheck_trailer_cb(value))                            \
     129              :               _curl_easy_setopt_err_trailer_cb();                       \
     130              :           if(curlcheck_cb_data_option(option))                          \
     131              :             if(!curlcheck_cb_data(value))                               \
     132              :               _curl_easy_setopt_err_cb_data();                          \
     133              :           if((option) == CURLOPT_ERRORBUFFER)                           \
     134              :             if(!curlcheck_error_buffer(value))                          \
     135              :               _curl_easy_setopt_err_error_buffer();                     \
     136              :           if((option) == CURLOPT_CURLU)                                 \
     137              :             if(!curlcheck_ptr((value), CURLU))                          \
     138              :               _curl_easy_setopt_err_curlu();                    \
     139              :           if((option) == CURLOPT_STDERR)                                \
     140              :             if(!curlcheck_FILE(value))                                  \
     141              :               _curl_easy_setopt_err_FILE();                             \
     142              :           if(curlcheck_postfields_option(option))                       \
     143              :             if(!curlcheck_postfields(value))                            \
     144              :               _curl_easy_setopt_err_postfields();                       \
     145              :           if((option) == CURLOPT_HTTPPOST)                              \
     146              :             if(!curlcheck_arr((value), struct curl_httppost))           \
     147              :               _curl_easy_setopt_err_curl_httpost();                     \
     148              :           if((option) == CURLOPT_MIMEPOST)                              \
     149              :             if(!curlcheck_ptr((value), curl_mime))                      \
     150              :               _curl_easy_setopt_err_curl_mimepost();                    \
     151              :           if(curlcheck_slist_option(option))                            \
     152              :             if(!curlcheck_arr((value), struct curl_slist))              \
     153              :               _curl_easy_setopt_err_curl_slist();                       \
     154              :           if((option) == CURLOPT_SHARE)                                 \
     155              :             if(!curlcheck_ptr((value), CURLSH))                         \
     156              :               _curl_easy_setopt_err_CURLSH();                           \
     157              :           )                                                             \
     158              :           }                                                             \
     159              :       curl_easy_setopt(handle, option, value);                          \
     160              :     })
     161              : 
     162              : /* wraps curl_easy_getinfo() with typechecking */
     163              : #define curl_easy_getinfo(handle, info, arg)                            \
     164              :   __extension__({                                                       \
     165              :       if(__builtin_constant_p(info)) {                                  \
     166              :         CURL_IGNORE_DEPRECATION(                                        \
     167              :           if(curlcheck_string_info(info))                               \
     168              :             if(!curlcheck_arr((arg), char *))                           \
     169              :               _curl_easy_getinfo_err_string();                          \
     170              :           if(curlcheck_long_info(info))                                 \
     171              :             if(!curlcheck_arr((arg), long))                             \
     172              :               _curl_easy_getinfo_err_long();                            \
     173              :           if(curlcheck_double_info(info))                               \
     174              :             if(!curlcheck_arr((arg), double))                           \
     175              :               _curl_easy_getinfo_err_double();                          \
     176              :           if(curlcheck_slist_info(info))                                \
     177              :             if(!curlcheck_arr((arg), struct curl_slist *))              \
     178              :               _curl_easy_getinfo_err_curl_slist();                      \
     179              :           if(curlcheck_tlssessioninfo_info(info))                       \
     180              :             if(!curlcheck_arr((arg), struct curl_tlssessioninfo *))     \
     181              :               _curl_easy_getinfo_err_curl_tlssessioninfo();            \
     182              :           if(curlcheck_certinfo_info(info))                             \
     183              :             if(!curlcheck_arr((arg), struct curl_certinfo *))           \
     184              :               _curl_easy_getinfo_err_curl_certinfo();                   \
     185              :           if(curlcheck_socket_info(info))                               \
     186              :             if(!curlcheck_arr((arg), curl_socket_t))                    \
     187              :               _curl_easy_getinfo_err_curl_socket();                     \
     188              :           if(curlcheck_off_t_info(info))                                \
     189              :             if(!curlcheck_arr((arg), curl_off_t))                       \
     190              :               _curl_easy_getinfo_err_curl_off_t();                      \
     191              :           )                                                             \
     192              :           }                                                             \
     193              :       curl_easy_getinfo(handle, info, arg);                             \
     194              :     })
     195              : 
     196              : /*
     197              :  * For now, just make sure that the functions are called with three arguments
     198              :  */
     199              : #define curl_share_setopt(share,opt,param) curl_share_setopt(share,opt,param)
     200              : #define curl_multi_setopt(handle,opt,param) curl_multi_setopt(handle,opt,param)
     201              : 
     202              : /* the actual warnings, triggered by calling the _curl_easy_setopt_err*
     203              :  * functions */
     204              : 
     205              : /* To define a new warning, use _CURL_WARNING(identifier, "message") */
     206              : #define CURLWARNING(id, message)                                        \
     207              :   static void __attribute__((__warning__(message)))                     \
     208              :   __attribute__((__unused__)) __attribute__((__noinline__))             \
     209              :   id(void) { __asm__(""); }
     210              : 
     211            4 : CURLWARNING(_curl_easy_setopt_err_long,
     212              :             "curl_easy_setopt expects a long argument")
     213            0 : CURLWARNING(_curl_easy_setopt_err_curl_off_t,
     214              :             "curl_easy_setopt expects a curl_off_t argument")
     215            0 : CURLWARNING(_curl_easy_setopt_err_string,
     216              :             "curl_easy_setopt expects a "
     217              :             "string ('char *' or char[]) argument")
     218            0 : CURLWARNING(_curl_easy_setopt_err_write_callback,
     219              :             "curl_easy_setopt expects a curl_write_callback argument")
     220            0 : CURLWARNING(_curl_easy_setopt_err_resolver_start_callback,
     221              :             "curl_easy_setopt expects a "
     222              :             "curl_resolver_start_callback argument")
     223            0 : CURLWARNING(_curl_easy_setopt_err_read_cb,
     224              :             "curl_easy_setopt expects a curl_read_callback argument")
     225            0 : CURLWARNING(_curl_easy_setopt_err_ioctl_cb,
     226              :             "curl_easy_setopt expects a curl_ioctl_callback argument")
     227            0 : CURLWARNING(_curl_easy_setopt_err_sockopt_cb,
     228              :             "curl_easy_setopt expects a curl_sockopt_callback argument")
     229            0 : CURLWARNING(_curl_easy_setopt_err_opensocket_cb,
     230              :             "curl_easy_setopt expects a "
     231              :             "curl_opensocket_callback argument")
     232            0 : CURLWARNING(_curl_easy_setopt_err_progress_cb,
     233              :             "curl_easy_setopt expects a curl_progress_callback argument")
     234            0 : CURLWARNING(_curl_easy_setopt_err_xferinfo_cb,
     235              :             "curl_easy_setopt expects a curl_xferinfo_callback argument")
     236            0 : CURLWARNING(_curl_easy_setopt_err_debug_cb,
     237              :             "curl_easy_setopt expects a curl_debug_callback argument")
     238            0 : CURLWARNING(_curl_easy_setopt_err_ssl_ctx_cb,
     239              :             "curl_easy_setopt expects a curl_ssl_ctx_callback argument")
     240            0 : CURLWARNING(_curl_easy_setopt_err_conv_cb,
     241              :             "curl_easy_setopt expects a curl_conv_callback argument")
     242            0 : CURLWARNING(_curl_easy_setopt_err_seek_cb,
     243              :             "curl_easy_setopt expects a curl_seek_callback argument")
     244            0 : CURLWARNING(_curl_easy_setopt_err_cb_data,
     245              :             "curl_easy_setopt expects a "
     246              :             "private data pointer as argument")
     247            0 : CURLWARNING(_curl_easy_setopt_err_chunk_bgn_cb,
     248              :             "curl_easy_setopt expects a curl_chunk_bgn_callback argument")
     249            0 : CURLWARNING(_curl_easy_setopt_err_chunk_end_cb,
     250              :             "curl_easy_setopt expects a curl_chunk_end_callback argument")
     251            0 : CURLWARNING(_curl_easy_setopt_err_close_socket_cb,
     252              :             "curl_easy_setopt expects a curl_closesocket_callback argument")
     253            0 : CURLWARNING(_curl_easy_setopt_err_fnmatch_cb,
     254              :             "curl_easy_setopt expects a curl_fnmatch_callback argument")
     255            0 : CURLWARNING(_curl_easy_setopt_err_hstsread_cb,
     256              :             "curl_easy_setopt expects a curl_hstsread_callback argument")
     257            0 : CURLWARNING(_curl_easy_setopt_err_hstswrite_cb,
     258              :             "curl_easy_setopt expects a curl_hstswrite_callback argument")
     259            0 : CURLWARNING(_curl_easy_setopt_err_ssh_key_cb,
     260              :             "curl_easy_setopt expects a curl_sshkeycallback argument")
     261            0 : CURLWARNING(_curl_easy_setopt_err_ssh_hostkey_cb,
     262              :             "curl_easy_setopt expects a curl_sshhostkeycallback argument")
     263            0 : CURLWARNING(_curl_easy_setopt_err_interleave_cb,
     264              :             "curl_easy_setopt expects a curl_interleave_callback argument")
     265            0 : CURLWARNING(_curl_easy_setopt_err_prereq_cb,
     266              :             "curl_easy_setopt expects a curl_prereq_callback argument")
     267            0 : CURLWARNING(_curl_easy_setopt_err_trailer_cb,
     268              :             "curl_easy_setopt expects a curl_trailerfunc_ok argument")
     269            0 : CURLWARNING(_curl_easy_setopt_err_error_buffer,
     270              :             "curl_easy_setopt expects a "
     271              :             "char buffer of CURL_ERROR_SIZE as argument")
     272            0 : CURLWARNING(_curl_easy_setopt_err_curlu,
     273              :             "curl_easy_setopt expects a 'CURLU *' argument")
     274            0 : CURLWARNING(_curl_easy_setopt_err_curl,
     275              :             "curl_easy_setopt expects a 'CURL *' argument")
     276            0 : CURLWARNING(_curl_easy_setopt_err_FILE,
     277              :             "curl_easy_setopt expects a 'FILE *' argument")
     278            0 : CURLWARNING(_curl_easy_setopt_err_postfields,
     279              :             "curl_easy_setopt expects a 'void *' or 'char *' argument")
     280            0 : CURLWARNING(_curl_easy_setopt_err_curl_httpost,
     281              :             "curl_easy_setopt expects a 'struct curl_httppost *' "
     282              :             "argument")
     283            0 : CURLWARNING(_curl_easy_setopt_err_curl_mimepost,
     284              :             "curl_easy_setopt expects a 'curl_mime *' "
     285              :             "argument")
     286            0 : CURLWARNING(_curl_easy_setopt_err_curl_slist,
     287              :             "curl_easy_setopt expects a 'struct curl_slist *' argument")
     288            0 : CURLWARNING(_curl_easy_setopt_err_CURLSH,
     289              :             "curl_easy_setopt expects a CURLSH* argument")
     290            0 : CURLWARNING(_curl_easy_getinfo_err_string,
     291              :             "curl_easy_getinfo expects a pointer to 'char *'")
     292            0 : CURLWARNING(_curl_easy_getinfo_err_long,
     293              :             "curl_easy_getinfo expects a pointer to long")
     294            0 : CURLWARNING(_curl_easy_getinfo_err_double,
     295              :             "curl_easy_getinfo expects a pointer to double")
     296            0 : CURLWARNING(_curl_easy_getinfo_err_curl_slist,
     297              :             "curl_easy_getinfo expects a pointer to 'struct curl_slist *'")
     298            0 : CURLWARNING(_curl_easy_getinfo_err_curl_tlssessioninfo,
     299              :             "curl_easy_getinfo expects a pointer to "
     300              :             "'struct curl_tlssessioninfo *'")
     301            0 : CURLWARNING(_curl_easy_getinfo_err_curl_certinfo,
     302              :             "curl_easy_getinfo expects a pointer to "
     303              :             "'struct curl_certinfo *'")
     304            0 : CURLWARNING(_curl_easy_getinfo_err_curl_socket,
     305              :             "curl_easy_getinfo expects a pointer to curl_socket_t")
     306            0 : CURLWARNING(_curl_easy_getinfo_err_curl_off_t,
     307              :             "curl_easy_getinfo expects a pointer to curl_off_t")
     308              : 
     309              : /* groups of curl_easy_setops options that take the same type of argument */
     310              : 
     311              : /* evaluates to true if option takes a long argument */
     312              : #define curlcheck_long_option(option)                   \
     313              :   (0 < (option) && (option) < CURLOPTTYPE_OBJECTPOINT)
     314              : 
     315              : #define curlcheck_off_t_option(option)                                  \
     316              :   (((option) > CURLOPTTYPE_OFF_T) && ((option) < CURLOPTTYPE_BLOB))
     317              : 
     318              : /* option takes a CURL * argument */
     319              : #define curlcheck_curl_option(option)                                 \
     320              :   ((option) == CURLOPT_STREAM_DEPENDS ||                              \
     321              :    (option) == CURLOPT_STREAM_DEPENDS_E ||                            \
     322              :    0)
     323              : 
     324              : /* evaluates to true if option takes a char* argument */
     325              : #define curlcheck_string_option(option)                                 \
     326              :   ((option) == CURLOPT_ABSTRACT_UNIX_SOCKET ||                          \
     327              :    (option) == CURLOPT_ACCEPT_ENCODING ||                               \
     328              :    (option) == CURLOPT_ALTSVC ||                                        \
     329              :    (option) == CURLOPT_CAINFO ||                                        \
     330              :    (option) == CURLOPT_CAPATH ||                                        \
     331              :    (option) == CURLOPT_COOKIE ||                                        \
     332              :    (option) == CURLOPT_COOKIEFILE ||                                    \
     333              :    (option) == CURLOPT_COOKIEJAR ||                                     \
     334              :    (option) == CURLOPT_COOKIELIST ||                                    \
     335              :    (option) == CURLOPT_CRLFILE ||                                       \
     336              :    (option) == CURLOPT_CUSTOMREQUEST ||                                 \
     337              :    (option) == CURLOPT_DEFAULT_PROTOCOL ||                              \
     338              :    (option) == CURLOPT_DNS_INTERFACE ||                                 \
     339              :    (option) == CURLOPT_DNS_LOCAL_IP4 ||                                 \
     340              :    (option) == CURLOPT_DNS_LOCAL_IP6 ||                                 \
     341              :    (option) == CURLOPT_DNS_SERVERS ||                                   \
     342              :    (option) == CURLOPT_DOH_URL ||                                       \
     343              :    (option) == CURLOPT_ECH ||                                           \
     344              :    (option) == CURLOPT_EGDSOCKET ||                                     \
     345              :    (option) == CURLOPT_FTP_ACCOUNT ||                                   \
     346              :    (option) == CURLOPT_FTP_ALTERNATIVE_TO_USER ||                       \
     347              :    (option) == CURLOPT_FTPPORT ||                                       \
     348              :    (option) == CURLOPT_HAPROXY_CLIENT_IP ||                             \
     349              :    (option) == CURLOPT_HSTS ||                                          \
     350              :    (option) == CURLOPT_INTERFACE ||                                     \
     351              :    (option) == CURLOPT_ISSUERCERT ||                                    \
     352              :    (option) == CURLOPT_KEYPASSWD ||                                     \
     353              :    (option) == CURLOPT_KRBLEVEL ||                                      \
     354              :    (option) == CURLOPT_LOGIN_OPTIONS ||                                 \
     355              :    (option) == CURLOPT_MAIL_AUTH ||                                     \
     356              :    (option) == CURLOPT_MAIL_FROM ||                                     \
     357              :    (option) == CURLOPT_NETRC_FILE ||                                    \
     358              :    (option) == CURLOPT_NOPROXY ||                                       \
     359              :    (option) == CURLOPT_PASSWORD ||                                      \
     360              :    (option) == CURLOPT_PINNEDPUBLICKEY ||                               \
     361              :    (option) == CURLOPT_PRE_PROXY ||                                     \
     362              :    (option) == CURLOPT_PROTOCOLS_STR ||                                 \
     363              :    (option) == CURLOPT_PROXY ||                                         \
     364              :    (option) == CURLOPT_PROXY_CAINFO ||                                  \
     365              :    (option) == CURLOPT_PROXY_CAPATH ||                                  \
     366              :    (option) == CURLOPT_PROXY_CRLFILE ||                                 \
     367              :    (option) == CURLOPT_PROXY_ISSUERCERT ||                              \
     368              :    (option) == CURLOPT_PROXY_KEYPASSWD ||                               \
     369              :    (option) == CURLOPT_PROXY_PINNEDPUBLICKEY ||                         \
     370              :    (option) == CURLOPT_PROXY_SERVICE_NAME ||                            \
     371              :    (option) == CURLOPT_PROXY_SSL_CIPHER_LIST ||                         \
     372              :    (option) == CURLOPT_PROXY_SSLCERT ||                                 \
     373              :    (option) == CURLOPT_PROXY_SSLCERTTYPE ||                             \
     374              :    (option) == CURLOPT_PROXY_SSLKEY ||                                  \
     375              :    (option) == CURLOPT_PROXY_SSLKEYTYPE ||                              \
     376              :    (option) == CURLOPT_PROXY_TLS13_CIPHERS ||                           \
     377              :    (option) == CURLOPT_PROXY_TLSAUTH_PASSWORD ||                        \
     378              :    (option) == CURLOPT_PROXY_TLSAUTH_TYPE ||                            \
     379              :    (option) == CURLOPT_PROXY_TLSAUTH_USERNAME ||                        \
     380              :    (option) == CURLOPT_PROXYPASSWORD ||                                 \
     381              :    (option) == CURLOPT_PROXYUSERNAME ||                                 \
     382              :    (option) == CURLOPT_PROXYUSERPWD ||                                  \
     383              :    (option) == CURLOPT_RANDOM_FILE ||                                   \
     384              :    (option) == CURLOPT_RANGE ||                                         \
     385              :    (option) == CURLOPT_REDIR_PROTOCOLS_STR ||                           \
     386              :    (option) == CURLOPT_REFERER ||                                       \
     387              :    (option) == CURLOPT_REQUEST_TARGET ||                                \
     388              :    (option) == CURLOPT_RTSP_SESSION_ID ||                               \
     389              :    (option) == CURLOPT_RTSP_STREAM_URI ||                               \
     390              :    (option) == CURLOPT_RTSP_TRANSPORT ||                                \
     391              :    (option) == CURLOPT_SASL_AUTHZID ||                                  \
     392              :    (option) == CURLOPT_SERVICE_NAME ||                                  \
     393              :    (option) == CURLOPT_SOCKS5_GSSAPI_SERVICE ||                         \
     394              :    (option) == CURLOPT_SSH_HOST_PUBLIC_KEY_MD5 ||                       \
     395              :    (option) == CURLOPT_SSH_HOST_PUBLIC_KEY_SHA256 ||                    \
     396              :    (option) == CURLOPT_SSH_KNOWNHOSTS ||                                \
     397              :    (option) == CURLOPT_SSH_PRIVATE_KEYFILE ||                           \
     398              :    (option) == CURLOPT_SSH_PUBLIC_KEYFILE ||                            \
     399              :    (option) == CURLOPT_SSLCERT ||                                       \
     400              :    (option) == CURLOPT_SSLCERTTYPE ||                                   \
     401              :    (option) == CURLOPT_SSLENGINE ||                                     \
     402              :    (option) == CURLOPT_SSLKEY ||                                        \
     403              :    (option) == CURLOPT_SSLKEYTYPE ||                                    \
     404              :    (option) == CURLOPT_SSL_CIPHER_LIST ||                               \
     405              :    (option) == CURLOPT_SSL_EC_CURVES ||                                 \
     406              :    (option) == CURLOPT_SSL_SIGNATURE_ALGORITHMS ||                      \
     407              :    (option) == CURLOPT_TLS13_CIPHERS ||                                 \
     408              :    (option) == CURLOPT_TLSAUTH_PASSWORD ||                              \
     409              :    (option) == CURLOPT_TLSAUTH_TYPE ||                                  \
     410              :    (option) == CURLOPT_TLSAUTH_USERNAME ||                              \
     411              :    (option) == CURLOPT_UNIX_SOCKET_PATH ||                              \
     412              :    (option) == CURLOPT_URL ||                                           \
     413              :    (option) == CURLOPT_USERAGENT ||                                     \
     414              :    (option) == CURLOPT_USERNAME ||                                      \
     415              :    (option) == CURLOPT_AWS_SIGV4 ||                                     \
     416              :    (option) == CURLOPT_USERPWD ||                                       \
     417              :    (option) == CURLOPT_XOAUTH2_BEARER ||                                \
     418              :    0)
     419              : 
     420              : /* evaluates to true if option takes a curl_write_callback argument */
     421              : #define curlcheck_write_cb_option(option)                               \
     422              :   ((option) == CURLOPT_HEADERFUNCTION ||                                \
     423              :    (option) == CURLOPT_WRITEFUNCTION)
     424              : 
     425              : /* evaluates to true if option takes a curl_conv_callback argument */
     426              : #define curlcheck_conv_cb_option(option)                                \
     427              :   ((option) == CURLOPT_CONV_TO_NETWORK_FUNCTION ||                      \
     428              :    (option) == CURLOPT_CONV_FROM_NETWORK_FUNCTION ||                    \
     429              :    (option) == CURLOPT_CONV_FROM_UTF8_FUNCTION)
     430              : 
     431              : /* evaluates to true if option takes a data argument to pass to a callback */
     432              : #define curlcheck_cb_data_option(option)                                      \
     433              :   ((option) == CURLOPT_CHUNK_DATA ||                                          \
     434              :    (option) == CURLOPT_CLOSESOCKETDATA ||                                     \
     435              :    (option) == CURLOPT_DEBUGDATA ||                                           \
     436              :    (option) == CURLOPT_FNMATCH_DATA ||                                        \
     437              :    (option) == CURLOPT_HEADERDATA ||                                          \
     438              :    (option) == CURLOPT_HSTSREADDATA ||                                        \
     439              :    (option) == CURLOPT_HSTSWRITEDATA ||                                       \
     440              :    (option) == CURLOPT_INTERLEAVEDATA ||                                      \
     441              :    (option) == CURLOPT_IOCTLDATA ||                                           \
     442              :    (option) == CURLOPT_OPENSOCKETDATA ||                                      \
     443              :    (option) == CURLOPT_PREREQDATA ||                                          \
     444              :    (option) == CURLOPT_XFERINFODATA ||                                        \
     445              :    (option) == CURLOPT_READDATA ||                                            \
     446              :    (option) == CURLOPT_SEEKDATA ||                                            \
     447              :    (option) == CURLOPT_SOCKOPTDATA ||                                         \
     448              :    (option) == CURLOPT_SSH_KEYDATA ||                                         \
     449              :    (option) == CURLOPT_SSL_CTX_DATA ||                                        \
     450              :    (option) == CURLOPT_WRITEDATA ||                                           \
     451              :    (option) == CURLOPT_RESOLVER_START_DATA ||                                 \
     452              :    (option) == CURLOPT_TRAILERDATA ||                                         \
     453              :    (option) == CURLOPT_SSH_HOSTKEYDATA ||                                     \
     454              :    0)
     455              : 
     456              : /* evaluates to true if option takes a POST data argument (void* or char*) */
     457              : #define curlcheck_postfields_option(option)                                   \
     458              :   ((option) == CURLOPT_POSTFIELDS ||                                          \
     459              :    (option) == CURLOPT_COPYPOSTFIELDS ||                                      \
     460              :    0)
     461              : 
     462              : /* evaluates to true if option takes a struct curl_slist * argument */
     463              : #define curlcheck_slist_option(option)                                        \
     464              :   ((option) == CURLOPT_HTTP200ALIASES ||                                      \
     465              :    (option) == CURLOPT_HTTPHEADER ||                                          \
     466              :    (option) == CURLOPT_MAIL_RCPT ||                                           \
     467              :    (option) == CURLOPT_POSTQUOTE ||                                           \
     468              :    (option) == CURLOPT_PREQUOTE ||                                            \
     469              :    (option) == CURLOPT_PROXYHEADER ||                                         \
     470              :    (option) == CURLOPT_QUOTE ||                                               \
     471              :    (option) == CURLOPT_RESOLVE ||                                             \
     472              :    (option) == CURLOPT_TELNETOPTIONS ||                                       \
     473              :    (option) == CURLOPT_CONNECT_TO ||                                          \
     474              :    0)
     475              : 
     476              : /* groups of curl_easy_getinfo infos that take the same type of argument */
     477              : 
     478              : /* evaluates to true if info expects a pointer to char * argument */
     479              : #define curlcheck_string_info(info)                             \
     480              :   (CURLINFO_STRING < (info) && (info) < CURLINFO_LONG &&        \
     481              :    (info) != CURLINFO_PRIVATE)
     482              : 
     483              : /* evaluates to true if info expects a pointer to long argument */
     484              : #define curlcheck_long_info(info)                       \
     485              :   (CURLINFO_LONG < (info) && (info) < CURLINFO_DOUBLE)
     486              : 
     487              : /* evaluates to true if info expects a pointer to double argument */
     488              : #define curlcheck_double_info(info)                     \
     489              :   (CURLINFO_DOUBLE < (info) && (info) < CURLINFO_SLIST)
     490              : 
     491              : /* true if info expects a pointer to struct curl_slist * argument */
     492              : #define curlcheck_slist_info(info)                                      \
     493              :   (((info) == CURLINFO_SSL_ENGINES) || ((info) == CURLINFO_COOKIELIST))
     494              : 
     495              : /* true if info expects a pointer to struct curl_tlssessioninfo * argument */
     496              : #define curlcheck_tlssessioninfo_info(info)                              \
     497              :   (((info) == CURLINFO_TLS_SSL_PTR) || ((info) == CURLINFO_TLS_SESSION))
     498              : 
     499              : /* true if info expects a pointer to struct curl_certinfo * argument */
     500              : #define curlcheck_certinfo_info(info) ((info) == CURLINFO_CERTINFO)
     501              : 
     502              : /* true if info expects a pointer to struct curl_socket_t argument */
     503              : #define curlcheck_socket_info(info)                     \
     504              :   (CURLINFO_SOCKET < (info) && (info) < CURLINFO_OFF_T)
     505              : 
     506              : /* true if info expects a pointer to curl_off_t argument */
     507              : #define curlcheck_off_t_info(info)              \
     508              :   (CURLINFO_OFF_T < (info))
     509              : 
     510              : 
     511              : /* typecheck helpers -- check whether given expression has requested type */
     512              : 
     513              : /* For pointers, you can use the curlcheck_ptr/curlcheck_arr macros,
     514              :  * otherwise define a new macro. Search for __builtin_types_compatible_p
     515              :  * in the GCC manual.
     516              :  * NOTE: these macros MUST NOT EVALUATE their arguments! The argument is
     517              :  * the actual expression passed to the curl_easy_setopt macro. This
     518              :  * means that you can only apply the sizeof and __typeof__ operators, no
     519              :  * == or whatsoever.
     520              :  */
     521              : 
     522              : /* XXX: should evaluate to true if expr is a pointer */
     523              : #define curlcheck_any_ptr(expr)                 \
     524              :   (sizeof(expr) == sizeof(void *))
     525              : 
     526              : /* evaluates to true if expr is NULL */
     527              : /* XXX: must not evaluate expr, so this check is not accurate */
     528              : #define curlcheck_NULL(expr)                                            \
     529              :   (__builtin_types_compatible_p(__typeof__(expr), __typeof__(NULL)))
     530              : 
     531              : /* evaluates to true if expr is type*, const type* or NULL */
     532              : #define curlcheck_ptr(expr, type)                                       \
     533              :   (curlcheck_NULL(expr) ||                                              \
     534              :    __builtin_types_compatible_p(__typeof__(expr), type *) ||            \
     535              :    __builtin_types_compatible_p(__typeof__(expr), const type *))
     536              : 
     537              : /* evaluates to true if expr is one of type[], type*, NULL or const type* */
     538              : #define curlcheck_arr(expr, type)                                       \
     539              :   (curlcheck_ptr((expr), type) ||                                       \
     540              :    __builtin_types_compatible_p(__typeof__(expr), type []))
     541              : 
     542              : /* evaluates to true if expr is a string */
     543              : #define curlcheck_string(expr)                                          \
     544              :   (curlcheck_arr((expr), char) ||                                       \
     545              :    curlcheck_arr((expr), signed char) ||                                \
     546              :    curlcheck_arr((expr), unsigned char))
     547              : 
     548              : /* evaluates to true if expr is a CURL * */
     549              : #define curlcheck_curl(expr)                                          \
     550              :   (curlcheck_NULL(expr) ||                                              \
     551              :    __builtin_types_compatible_p(__typeof__(expr), CURL *))
     552              : 
     553              : 
     554              : /* evaluates to true if expr is a long (no matter the signedness)
     555              :  * XXX: for now, int is also accepted (and therefore short and char, which
     556              :  * are promoted to int when passed to a variadic function) */
     557              : #define curlcheck_long(expr)                                            \
     558              :   (                                                                     \
     559              :   ((sizeof(long) != sizeof(int)) &&                                     \
     560              :    (__builtin_types_compatible_p(__typeof__(expr), long) ||             \
     561              :     __builtin_types_compatible_p(__typeof__(expr), signed long) ||      \
     562              :     __builtin_types_compatible_p(__typeof__(expr), unsigned long)))     \
     563              :   ||                                                                    \
     564              :   ((sizeof(long) == sizeof(int)) &&                                     \
     565              :   (__builtin_types_compatible_p(__typeof__(expr), long) ||              \
     566              :    __builtin_types_compatible_p(__typeof__(expr), signed long) ||       \
     567              :    __builtin_types_compatible_p(__typeof__(expr), unsigned long) ||     \
     568              :    __builtin_types_compatible_p(__typeof__(expr), int) ||               \
     569              :    __builtin_types_compatible_p(__typeof__(expr), signed int) ||        \
     570              :    __builtin_types_compatible_p(__typeof__(expr), unsigned int) ||      \
     571              :    __builtin_types_compatible_p(__typeof__(expr), short) ||             \
     572              :    __builtin_types_compatible_p(__typeof__(expr), signed short) ||      \
     573              :    __builtin_types_compatible_p(__typeof__(expr), unsigned short) ||    \
     574              :    __builtin_types_compatible_p(__typeof__(expr), char) ||              \
     575              :    __builtin_types_compatible_p(__typeof__(expr), signed char) ||       \
     576              :    __builtin_types_compatible_p(__typeof__(expr), unsigned char)))      \
     577              :                                                                   )
     578              : 
     579              : /* evaluates to true if expr is of type curl_off_t */
     580              : #define curlcheck_off_t(expr)                                   \
     581              :   (__builtin_types_compatible_p(__typeof__(expr), curl_off_t))
     582              : 
     583              : /* evaluates to true if expr is abuffer suitable for CURLOPT_ERRORBUFFER */
     584              : /* XXX: also check size of an char[] array? */
     585              : #define curlcheck_error_buffer(expr)                                    \
     586              :   (curlcheck_NULL(expr) ||                                              \
     587              :    __builtin_types_compatible_p(__typeof__(expr), char *) ||            \
     588              :    __builtin_types_compatible_p(__typeof__(expr), char[]))
     589              : 
     590              : /* evaluates to true if expr is of type (const) void* or (const) FILE* */
     591              : #if 0
     592              : #define curlcheck_cb_data(expr)                                         \
     593              :   (curlcheck_ptr((expr), void) ||                                       \
     594              :    curlcheck_ptr((expr), FILE))
     595              : #else /* be less strict */
     596              : #define curlcheck_cb_data(expr)                 \
     597              :   curlcheck_any_ptr(expr)
     598              : #endif
     599              : 
     600              : /* evaluates to true if expr is of type FILE* */
     601              : #define curlcheck_FILE(expr)                                            \
     602              :   (curlcheck_NULL(expr) ||                                              \
     603              :    (__builtin_types_compatible_p(__typeof__(expr), FILE *)))
     604              : 
     605              : /* evaluates to true if expr can be passed as POST data (void* or char*) */
     606              : #define curlcheck_postfields(expr)                                      \
     607              :   (curlcheck_ptr((expr), void) ||                                       \
     608              :    curlcheck_arr((expr), char) ||                                       \
     609              :    curlcheck_arr((expr), unsigned char))
     610              : 
     611              : /* helper: __builtin_types_compatible_p distinguishes between functions and
     612              :  * function pointers, hide it */
     613              : #define curlcheck_cb_compatible(func, type)                             \
     614              :   (__builtin_types_compatible_p(__typeof__(func), type) ||              \
     615              :    __builtin_types_compatible_p(__typeof__(func) *, type))
     616              : 
     617              : /* evaluates to true if expr is of type curl_resolver_start_callback */
     618              : #define curlcheck_resolver_start_callback(expr)       \
     619              :   (curlcheck_NULL(expr) || \
     620              :    curlcheck_cb_compatible((expr), curl_resolver_start_callback))
     621              : 
     622              : /* evaluates to true if expr is of type curl_read_callback or "similar" */
     623              : #define curlcheck_read_cb(expr)                                         \
     624              :   (curlcheck_NULL(expr) ||                                              \
     625              :    curlcheck_cb_compatible((expr), __typeof__(fread) *) ||              \
     626              :    curlcheck_cb_compatible((expr), curl_read_callback) ||               \
     627              :    curlcheck_cb_compatible((expr), _curl_read_callback1) ||             \
     628              :    curlcheck_cb_compatible((expr), _curl_read_callback2) ||             \
     629              :    curlcheck_cb_compatible((expr), _curl_read_callback3) ||             \
     630              :    curlcheck_cb_compatible((expr), _curl_read_callback4) ||             \
     631              :    curlcheck_cb_compatible((expr), _curl_read_callback5) ||             \
     632              :    curlcheck_cb_compatible((expr), _curl_read_callback6))
     633              : typedef size_t (*_curl_read_callback1)(char *, size_t, size_t, void *);
     634              : typedef size_t (*_curl_read_callback2)(char *, size_t, size_t, const void *);
     635              : typedef size_t (*_curl_read_callback3)(char *, size_t, size_t, FILE *);
     636              : typedef size_t (*_curl_read_callback4)(void *, size_t, size_t, void *);
     637              : typedef size_t (*_curl_read_callback5)(void *, size_t, size_t, const void *);
     638              : typedef size_t (*_curl_read_callback6)(void *, size_t, size_t, FILE *);
     639              : 
     640              : /* evaluates to true if expr is of type curl_write_callback or "similar" */
     641              : #define curlcheck_write_cb(expr)                                        \
     642              :   (curlcheck_read_cb(expr) ||                                           \
     643              :    curlcheck_cb_compatible((expr), __typeof__(fwrite) *) ||             \
     644              :    curlcheck_cb_compatible((expr), curl_write_callback) ||              \
     645              :    curlcheck_cb_compatible((expr), _curl_write_callback1) ||            \
     646              :    curlcheck_cb_compatible((expr), _curl_write_callback2) ||            \
     647              :    curlcheck_cb_compatible((expr), _curl_write_callback3) ||            \
     648              :    curlcheck_cb_compatible((expr), _curl_write_callback4) ||            \
     649              :    curlcheck_cb_compatible((expr), _curl_write_callback5) ||            \
     650              :    curlcheck_cb_compatible((expr), _curl_write_callback6))
     651              : typedef size_t (*_curl_write_callback1)(const char *, size_t, size_t, void *);
     652              : typedef size_t (*_curl_write_callback2)(const char *, size_t, size_t,
     653              :                                        const void *);
     654              : typedef size_t (*_curl_write_callback3)(const char *, size_t, size_t, FILE *);
     655              : typedef size_t (*_curl_write_callback4)(const void *, size_t, size_t, void *);
     656              : typedef size_t (*_curl_write_callback5)(const void *, size_t, size_t,
     657              :                                        const void *);
     658              : typedef size_t (*_curl_write_callback6)(const void *, size_t, size_t, FILE *);
     659              : 
     660              : /* evaluates to true if expr is of type curl_ioctl_callback or "similar" */
     661              : #define curlcheck_ioctl_cb(expr)                                        \
     662              :   (curlcheck_NULL(expr) ||                                              \
     663              :    curlcheck_cb_compatible((expr), curl_ioctl_callback) ||              \
     664              :    curlcheck_cb_compatible((expr), _curl_ioctl_callback1) ||            \
     665              :    curlcheck_cb_compatible((expr), _curl_ioctl_callback2) ||            \
     666              :    curlcheck_cb_compatible((expr), _curl_ioctl_callback3) ||            \
     667              :    curlcheck_cb_compatible((expr), _curl_ioctl_callback4))
     668              : typedef curlioerr (*_curl_ioctl_callback1)(CURL *, int, void *);
     669              : typedef curlioerr (*_curl_ioctl_callback2)(CURL *, int, const void *);
     670              : typedef curlioerr (*_curl_ioctl_callback3)(CURL *, curliocmd, void *);
     671              : typedef curlioerr (*_curl_ioctl_callback4)(CURL *, curliocmd, const void *);
     672              : 
     673              : /* evaluates to true if expr is of type curl_sockopt_callback or "similar" */
     674              : #define curlcheck_sockopt_cb(expr)                                      \
     675              :   (curlcheck_NULL(expr) ||                                              \
     676              :    curlcheck_cb_compatible((expr), curl_sockopt_callback) ||            \
     677              :    curlcheck_cb_compatible((expr), _curl_sockopt_callback1) ||          \
     678              :    curlcheck_cb_compatible((expr), _curl_sockopt_callback2))
     679              : typedef int (*_curl_sockopt_callback1)(void *, curl_socket_t, curlsocktype);
     680              : typedef int (*_curl_sockopt_callback2)(const void *, curl_socket_t,
     681              :                                       curlsocktype);
     682              : 
     683              : /* evaluates to true if expr is of type curl_opensocket_callback or
     684              :    "similar" */
     685              : #define curlcheck_opensocket_cb(expr)                                   \
     686              :   (curlcheck_NULL(expr) ||                                              \
     687              :    curlcheck_cb_compatible((expr), curl_opensocket_callback) ||         \
     688              :    curlcheck_cb_compatible((expr), _curl_opensocket_callback1) ||       \
     689              :    curlcheck_cb_compatible((expr), _curl_opensocket_callback2) ||       \
     690              :    curlcheck_cb_compatible((expr), _curl_opensocket_callback3) ||       \
     691              :    curlcheck_cb_compatible((expr), _curl_opensocket_callback4))
     692              : typedef curl_socket_t (*_curl_opensocket_callback1)
     693              :   (void *, curlsocktype, struct curl_sockaddr *);
     694              : typedef curl_socket_t (*_curl_opensocket_callback2)
     695              :   (void *, curlsocktype, const struct curl_sockaddr *);
     696              : typedef curl_socket_t (*_curl_opensocket_callback3)
     697              :   (const void *, curlsocktype, struct curl_sockaddr *);
     698              : typedef curl_socket_t (*_curl_opensocket_callback4)
     699              :   (const void *, curlsocktype, const struct curl_sockaddr *);
     700              : 
     701              : /* evaluates to true if expr is of type curl_progress_callback or "similar" */
     702              : #define curlcheck_progress_cb(expr)                                     \
     703              :   (curlcheck_NULL(expr) ||                                              \
     704              :    curlcheck_cb_compatible((expr), curl_progress_callback) ||           \
     705              :    curlcheck_cb_compatible((expr), _curl_progress_callback1) ||         \
     706              :    curlcheck_cb_compatible((expr), _curl_progress_callback2))
     707              : typedef int (*_curl_progress_callback1)(void *,
     708              :     double, double, double, double);
     709              : typedef int (*_curl_progress_callback2)(const void *,
     710              :     double, double, double, double);
     711              : 
     712              : /* evaluates to true if expr is of type curl_xferinfo_callback */
     713              : #define curlcheck_xferinfo_cb(expr)                                     \
     714              :   (curlcheck_NULL(expr) ||                                              \
     715              :    curlcheck_cb_compatible((expr), curl_xferinfo_callback))
     716              : 
     717              : /* evaluates to true if expr is of type curl_debug_callback or "similar" */
     718              : #define curlcheck_debug_cb(expr)                                        \
     719              :   (curlcheck_NULL(expr) ||                                              \
     720              :    curlcheck_cb_compatible((expr), curl_debug_callback) ||              \
     721              :    curlcheck_cb_compatible((expr), _curl_debug_callback1) ||            \
     722              :    curlcheck_cb_compatible((expr), _curl_debug_callback2) ||            \
     723              :    curlcheck_cb_compatible((expr), _curl_debug_callback3) ||            \
     724              :    curlcheck_cb_compatible((expr), _curl_debug_callback4) ||            \
     725              :    curlcheck_cb_compatible((expr), _curl_debug_callback5) ||            \
     726              :    curlcheck_cb_compatible((expr), _curl_debug_callback6) ||            \
     727              :    curlcheck_cb_compatible((expr), _curl_debug_callback7) ||            \
     728              :    curlcheck_cb_compatible((expr), _curl_debug_callback8))
     729              : typedef int (*_curl_debug_callback1) (CURL *,
     730              :     curl_infotype, char *, size_t, void *);
     731              : typedef int (*_curl_debug_callback2) (CURL *,
     732              :     curl_infotype, char *, size_t, const void *);
     733              : typedef int (*_curl_debug_callback3) (CURL *,
     734              :     curl_infotype, const char *, size_t, void *);
     735              : typedef int (*_curl_debug_callback4) (CURL *,
     736              :     curl_infotype, const char *, size_t, const void *);
     737              : typedef int (*_curl_debug_callback5) (CURL *,
     738              :     curl_infotype, unsigned char *, size_t, void *);
     739              : typedef int (*_curl_debug_callback6) (CURL *,
     740              :     curl_infotype, unsigned char *, size_t, const void *);
     741              : typedef int (*_curl_debug_callback7) (CURL *,
     742              :     curl_infotype, const unsigned char *, size_t, void *);
     743              : typedef int (*_curl_debug_callback8) (CURL *,
     744              :     curl_infotype, const unsigned char *, size_t, const void *);
     745              : 
     746              : /* evaluates to true if expr is of type curl_ssl_ctx_callback or "similar" */
     747              : /* this is getting even messier... */
     748              : #define curlcheck_ssl_ctx_cb(expr)                                      \
     749              :   (curlcheck_NULL(expr) ||                                              \
     750              :    curlcheck_cb_compatible((expr), curl_ssl_ctx_callback) ||            \
     751              :    curlcheck_cb_compatible((expr), _curl_ssl_ctx_callback1) ||          \
     752              :    curlcheck_cb_compatible((expr), _curl_ssl_ctx_callback2) ||          \
     753              :    curlcheck_cb_compatible((expr), _curl_ssl_ctx_callback3) ||          \
     754              :    curlcheck_cb_compatible((expr), _curl_ssl_ctx_callback4) ||          \
     755              :    curlcheck_cb_compatible((expr), _curl_ssl_ctx_callback5) ||          \
     756              :    curlcheck_cb_compatible((expr), _curl_ssl_ctx_callback6) ||          \
     757              :    curlcheck_cb_compatible((expr), _curl_ssl_ctx_callback7) ||          \
     758              :    curlcheck_cb_compatible((expr), _curl_ssl_ctx_callback8))
     759              : typedef CURLcode (*_curl_ssl_ctx_callback1)(CURL *, void *, void *);
     760              : typedef CURLcode (*_curl_ssl_ctx_callback2)(CURL *, void *, const void *);
     761              : typedef CURLcode (*_curl_ssl_ctx_callback3)(CURL *, const void *, void *);
     762              : typedef CURLcode (*_curl_ssl_ctx_callback4)(CURL *, const void *,
     763              :                                             const void *);
     764              : #ifdef HEADER_SSL_H
     765              : /* hack: if we included OpenSSL's ssl.h, we know about SSL_CTX
     766              :  * this will of course break if we are included before OpenSSL headers...
     767              :  */
     768              : typedef CURLcode (*_curl_ssl_ctx_callback5)(CURL *, SSL_CTX *, void *);
     769              : typedef CURLcode (*_curl_ssl_ctx_callback6)(CURL *, SSL_CTX *, const void *);
     770              : typedef CURLcode (*_curl_ssl_ctx_callback7)(CURL *, const SSL_CTX *, void *);
     771              : typedef CURLcode (*_curl_ssl_ctx_callback8)(CURL *, const SSL_CTX *,
     772              :                                             const void *);
     773              : #else
     774              : typedef _curl_ssl_ctx_callback1 _curl_ssl_ctx_callback5;
     775              : typedef _curl_ssl_ctx_callback1 _curl_ssl_ctx_callback6;
     776              : typedef _curl_ssl_ctx_callback1 _curl_ssl_ctx_callback7;
     777              : typedef _curl_ssl_ctx_callback1 _curl_ssl_ctx_callback8;
     778              : #endif
     779              : 
     780              : /* evaluates to true if expr is of type curl_conv_callback or "similar" */
     781              : #define curlcheck_conv_cb(expr)                                         \
     782              :   (curlcheck_NULL(expr) ||                                              \
     783              :    curlcheck_cb_compatible((expr), curl_conv_callback) ||               \
     784              :    curlcheck_cb_compatible((expr), _curl_conv_callback1) ||             \
     785              :    curlcheck_cb_compatible((expr), _curl_conv_callback2) ||             \
     786              :    curlcheck_cb_compatible((expr), _curl_conv_callback3) ||             \
     787              :    curlcheck_cb_compatible((expr), _curl_conv_callback4))
     788              : typedef CURLcode (*_curl_conv_callback1)(char *, size_t length);
     789              : typedef CURLcode (*_curl_conv_callback2)(const char *, size_t length);
     790              : typedef CURLcode (*_curl_conv_callback3)(void *, size_t length);
     791              : typedef CURLcode (*_curl_conv_callback4)(const void *, size_t length);
     792              : 
     793              : /* evaluates to true if expr is of type curl_seek_callback or "similar" */
     794              : #define curlcheck_seek_cb(expr)                                         \
     795              :   (curlcheck_NULL(expr) ||                                              \
     796              :    curlcheck_cb_compatible((expr), curl_seek_callback) ||               \
     797              :    curlcheck_cb_compatible((expr), _curl_seek_callback1) ||             \
     798              :    curlcheck_cb_compatible((expr), _curl_seek_callback2))
     799              : typedef CURLcode (*_curl_seek_callback1)(void *, curl_off_t, int);
     800              : typedef CURLcode (*_curl_seek_callback2)(const void *, curl_off_t, int);
     801              : 
     802              : /* evaluates to true if expr is of type curl_chunk_bgn_callback */
     803              : #define curlcheck_chunk_bgn_cb(expr)                                    \
     804              :   (curlcheck_NULL(expr) ||                                              \
     805              :    curlcheck_cb_compatible((expr), curl_chunk_bgn_callback) ||          \
     806              :    curlcheck_cb_compatible((expr), _curl_chunk_bgn_callback1) ||        \
     807              :    curlcheck_cb_compatible((expr), _curl_chunk_bgn_callback2))
     808              : typedef long (*_curl_chunk_bgn_callback1)(struct curl_fileinfo *,
     809              :                                           void *, int);
     810              : typedef long (*_curl_chunk_bgn_callback2)(void *, void *, int);
     811              : 
     812              : /* evaluates to true if expr is of type curl_chunk_end_callback */
     813              : #define curlcheck_chunk_end_cb(expr)                                    \
     814              :   (curlcheck_NULL(expr) ||                                              \
     815              :    curlcheck_cb_compatible((expr), curl_chunk_end_callback))
     816              : 
     817              : /* evaluates to true if expr is of type curl_closesocket_callback */
     818              : #define curlcheck_close_socket_cb(expr)                                 \
     819              :   (curlcheck_NULL(expr) ||                                              \
     820              :    curlcheck_cb_compatible((expr), curl_closesocket_callback))
     821              : 
     822              : /* evaluates to true if expr is of type curl_fnmatch_callback */
     823              : #define curlcheck_fnmatch_cb(expr)                                      \
     824              :   (curlcheck_NULL(expr) ||                                              \
     825              :    curlcheck_cb_compatible((expr), curl_fnmatch_callback))
     826              : 
     827              : /* evaluates to true if expr is of type curl_hstsread_callback */
     828              : #define curlcheck_hstsread_cb(expr)                                     \
     829              :   (curlcheck_NULL(expr) ||                                              \
     830              :    curlcheck_cb_compatible((expr), curl_hstsread_callback))
     831              : 
     832              : /* evaluates to true if expr is of type curl_hstswrite_callback */
     833              : #define curlcheck_hstswrite_cb(expr)                                    \
     834              :   (curlcheck_NULL(expr) ||                                              \
     835              :    curlcheck_cb_compatible((expr), curl_hstswrite_callback))
     836              : 
     837              : /* evaluates to true if expr is of type curl_sshhostkeycallback */
     838              : #define curlcheck_ssh_hostkey_cb(expr)                                  \
     839              :   (curlcheck_NULL(expr) ||                                              \
     840              :    curlcheck_cb_compatible((expr), curl_sshhostkeycallback))
     841              : 
     842              : /* evaluates to true if expr is of type curl_sshkeycallback */
     843              : #define curlcheck_ssh_key_cb(expr)                                  \
     844              :   (curlcheck_NULL(expr) ||                                          \
     845              :    curlcheck_cb_compatible((expr), curl_sshkeycallback))
     846              : 
     847              : /* evaluates to true if expr is of type curl_interleave_callback */
     848              : #define curlcheck_interleave_cb(expr)                                   \
     849              :   (curlcheck_NULL(expr) ||                                              \
     850              :    curlcheck_cb_compatible((expr), _curl_interleave_callback1) ||       \
     851              :    curlcheck_cb_compatible((expr), _curl_interleave_callback2))
     852              : typedef size_t (*_curl_interleave_callback1)(void *p, size_t s,
     853              :                                              size_t n, void *u);
     854              : typedef size_t (*_curl_interleave_callback2)(char *p, size_t s,
     855              :                                              size_t n, void *u);
     856              : 
     857              : /* evaluates to true if expr is of type curl_prereq_callback */
     858              : #define curlcheck_prereq_cb(expr)                                    \
     859              :   (curlcheck_NULL(expr) ||                                           \
     860              :    curlcheck_cb_compatible((expr), curl_prereq_callback))
     861              : 
     862              : /* evaluates to true if expr is of type curl_trailer_callback */
     863              : #define curlcheck_trailer_cb(expr)                                    \
     864              :   (curlcheck_NULL(expr) ||                                            \
     865              :    curlcheck_cb_compatible((expr), curl_trailer_callback))
     866              : 
     867              : #endif /* CURLINC_TYPECHECK_GCC_H */
        
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