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Edit File : typecheck-gcc.h \| Size : 42.20 KB
#ifndef __CURL_TYPECHECK_GCC_H #define __CURL_TYPECHECK_GCC_H /*************************************************************************** * _ _ ____ _ * Project ___\| \| \| \| _ \\| \| * / __\| \| \| \| \|_) \| \| * \| (__\| \|_\| \| _ <\| \|___ * \___\|\___/\|_\| \_\_____\| * * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al. * * This software is licensed as described in the file COPYING, which * you should have received as part of this distribution. The terms * are also available at https://curl.haxx.se/docs/copyright.html. * * You may opt to use, copy, modify, merge, publish, distribute and/or sell * copies of the Software, and permit persons to whom the Software is * furnished to do so, under the terms of the COPYING file. * * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY * KIND, either express or implied. * **************************************************************************/ / wraps curl_easy_setopt() with typechecking / / To add a new kind of warning, add an * if(_curl_is_sometype_option(_curl_opt)) * if(!_curl_is_sometype(value)) * _curl_easy_setopt_err_sometype(); * block and define _curl_is_sometype_option, _curl_is_sometype and * _curl_easy_setopt_err_sometype below * * NOTE: We use two nested 'if' statements here instead of the && operator, in * order to work around gcc bug #32061. It affects only gcc 4.3.x/4.4.x * when compiling with -Wlogical-op. * * To add an option that uses the same type as an existing option, you'll just * need to extend the appropriate _curl__option macro / #define curl_easy_setopt(handle, option, value) \ __extension__ ({ \ __typeof__(option) _curl_opt = option; \ if(__builtin_constant_p(_curl_opt)) { \ if(_curl_is_long_option(_curl_opt)) \ if(!_curl_is_long(value)) \ _curl_easy_setopt_err_long(); \ if(_curl_is_off_t_option(_curl_opt)) \ if(!_curl_is_off_t(value)) \ _curl_easy_setopt_err_curl_off_t(); \ if(_curl_is_string_option(_curl_opt)) \ if(!_curl_is_string(value)) \ _curl_easy_setopt_err_string(); \ if(_curl_is_write_cb_option(_curl_opt)) \ if(!_curl_is_write_cb(value)) \ _curl_easy_setopt_err_write_callback(); \ if((_curl_opt) == CURLOPT_RESOLVER_START_FUNCTION) \ if(!_curl_is_resolver_start_callback(value)) \ _curl_easy_setopt_err_resolver_start_callback(); \ if((_curl_opt) == CURLOPT_READFUNCTION) \ if(!_curl_is_read_cb(value)) \ _curl_easy_setopt_err_read_cb(); \ if((_curl_opt) == CURLOPT_IOCTLFUNCTION) \ if(!_curl_is_ioctl_cb(value)) \ _curl_easy_setopt_err_ioctl_cb(); \ if((_curl_opt) == CURLOPT_SOCKOPTFUNCTION) \ if(!_curl_is_sockopt_cb(value)) \ _curl_easy_setopt_err_sockopt_cb(); \ if((_curl_opt) == CURLOPT_OPENSOCKETFUNCTION) \ if(!_curl_is_opensocket_cb(value)) \ _curl_easy_setopt_err_opensocket_cb(); \ if((_curl_opt) == CURLOPT_PROGRESSFUNCTION) \ if(!_curl_is_progress_cb(value)) \ _curl_easy_setopt_err_progress_cb(); \ if((_curl_opt) == CURLOPT_DEBUGFUNCTION) \ if(!_curl_is_debug_cb(value)) \ _curl_easy_setopt_err_debug_cb(); \ if((_curl_opt) == CURLOPT_SSL_CTX_FUNCTION) \ if(!_curl_is_ssl_ctx_cb(value)) \ _curl_easy_setopt_err_ssl_ctx_cb(); \ if(_curl_is_conv_cb_option(_curl_opt)) \ if(!_curl_is_conv_cb(value)) \ _curl_easy_setopt_err_conv_cb(); \ if((_curl_opt) == CURLOPT_SEEKFUNCTION) \ if(!_curl_is_seek_cb(value)) \ _curl_easy_setopt_err_seek_cb(); \ if(_curl_is_cb_data_option(_curl_opt)) \ if(!_curl_is_cb_data(value)) \ _curl_easy_setopt_err_cb_data(); \ if((_curl_opt) == CURLOPT_ERRORBUFFER) \ if(!_curl_is_error_buffer(value)) \ _curl_easy_setopt_err_error_buffer(); \ if((_curl_opt) == CURLOPT_STDERR) \ if(!_curl_is_FILE(value)) \ _curl_easy_setopt_err_FILE(); \ if(_curl_is_postfields_option(_curl_opt)) \ if(!_curl_is_postfields(value)) \ _curl_easy_setopt_err_postfields(); \ if((_curl_opt) == CURLOPT_HTTPPOST) \ if(!_curl_is_arr((value), struct curl_httppost)) \ _curl_easy_setopt_err_curl_httpost(); \ if((_curl_opt) == CURLOPT_MIMEPOST) \ if(!_curl_is_ptr((value), curl_mime)) \ _curl_easy_setopt_err_curl_mimepost(); \ if(_curl_is_slist_option(_curl_opt)) \ if(!_curl_is_arr((value), struct curl_slist)) \ _curl_easy_setopt_err_curl_slist(); \ if((_curl_opt) == CURLOPT_SHARE) \ if(!_curl_is_ptr((value), CURLSH)) \ _curl_easy_setopt_err_CURLSH(); \ } \ curl_easy_setopt(handle, _curl_opt, value); \ }) /* wraps curl_easy_getinfo() with typechecking / / FIXME: don't allow const pointers / #define curl_easy_getinfo(handle, info, arg) \ __extension__ ({ \ __typeof__(info) _curl_info = info; \ if(__builtin_constant_p(_curl_info)) { \ if(_curl_is_string_info(_curl_info)) \ if(!_curl_is_arr((arg), char )) \ _curl_easy_getinfo_err_string(); \ if(_curl_is_long_info(_curl_info)) \ if(!_curl_is_arr((arg), long)) \ _curl_easy_getinfo_err_long(); \ if(_curl_is_double_info(_curl_info)) \ if(!_curl_is_arr((arg), double)) \ _curl_easy_getinfo_err_double(); \ if(_curl_is_slist_info(_curl_info)) \ if(!_curl_is_arr((arg), struct curl_slist )) \ _curl_easy_getinfo_err_curl_slist(); \ if(_curl_is_tlssessioninfo_info(_curl_info)) \ if(!_curl_is_arr((arg), struct curl_tlssessioninfo )) \ _curl_easy_getinfo_err_curl_tlssesssioninfo(); \ if(_curl_is_certinfo_info(_curl_info)) \ if(!_curl_is_arr((arg), struct curl_certinfo )) \ _curl_easy_getinfo_err_curl_certinfo(); \ if(_curl_is_socket_info(_curl_info)) \ if(!_curl_is_arr((arg), curl_socket_t)) \ _curl_easy_getinfo_err_curl_socket(); \ if(_curl_is_off_t_info(_curl_info)) \ if(!_curl_is_arr((arg), curl_off_t)) \ _curl_easy_getinfo_err_curl_off_t(); \ } \ curl_easy_getinfo(handle, _curl_info, arg); \ }) / TODO: typechecking for curl_share_setopt() and curl_multi_setopt(), * for now just make sure that the functions are called with three * arguments / #define curl_share_setopt(share,opt,param) curl_share_setopt(share,opt,param) #define curl_multi_setopt(handle,opt,param) curl_multi_setopt(handle,opt,param) / the actual warnings, triggered by calling the _curl_easy_setopt_err* * functions / / To define a new warning, use _CURL_WARNING(identifier, "message") / #define _CURL_WARNING(id, message) \ static void __attribute__((__warning__(message))) \ __attribute__((__unused__)) __attribute__((__noinline__)) \ id(void) { __asm__(""); } _CURL_WARNING(_curl_easy_setopt_err_long, "curl_easy_setopt expects a long argument for this option") _CURL_WARNING(_curl_easy_setopt_err_curl_off_t, "curl_easy_setopt expects a curl_off_t argument for this option") _CURL_WARNING(_curl_easy_setopt_err_string, "curl_easy_setopt expects a " "string ('char ' or char[]) argument for this option" ) _CURL_WARNING(_curl_easy_setopt_err_write_callback, "curl_easy_setopt expects a curl_write_callback argument for this option") _CURL_WARNING(_curl_easy_setopt_err_resolver_start_callback, "curl_easy_setopt expects a " "curl_resolver_start_callback argument for this option" ) _CURL_WARNING(_curl_easy_setopt_err_read_cb, "curl_easy_setopt expects a curl_read_callback argument for this option") _CURL_WARNING(_curl_easy_setopt_err_ioctl_cb, "curl_easy_setopt expects a curl_ioctl_callback argument for this option") _CURL_WARNING(_curl_easy_setopt_err_sockopt_cb, "curl_easy_setopt expects a curl_sockopt_callback argument for this option") _CURL_WARNING(_curl_easy_setopt_err_opensocket_cb, "curl_easy_setopt expects a " "curl_opensocket_callback argument for this option" ) _CURL_WARNING(_curl_easy_setopt_err_progress_cb, "curl_easy_setopt expects a curl_progress_callback argument for this option") _CURL_WARNING(_curl_easy_setopt_err_debug_cb, "curl_easy_setopt expects a curl_debug_callback argument for this option") _CURL_WARNING(_curl_easy_setopt_err_ssl_ctx_cb, "curl_easy_setopt expects a curl_ssl_ctx_callback argument for this option") _CURL_WARNING(_curl_easy_setopt_err_conv_cb, "curl_easy_setopt expects a curl_conv_callback argument for this option") _CURL_WARNING(_curl_easy_setopt_err_seek_cb, "curl_easy_setopt expects a curl_seek_callback argument for this option") _CURL_WARNING(_curl_easy_setopt_err_cb_data, "curl_easy_setopt expects a " "private data pointer as argument for this option") _CURL_WARNING(_curl_easy_setopt_err_error_buffer, "curl_easy_setopt expects a " "char buffer of CURL_ERROR_SIZE as argument for this option") _CURL_WARNING(_curl_easy_setopt_err_FILE, "curl_easy_setopt expects a 'FILE ' argument for this option") _CURL_WARNING(_curl_easy_setopt_err_postfields, "curl_easy_setopt expects a 'void ' or 'char ' argument for this option") _CURL_WARNING(_curl_easy_setopt_err_curl_httpost, "curl_easy_setopt expects a 'struct curl_httppost ' " "argument for this option") _CURL_WARNING(_curl_easy_setopt_err_curl_mimepost, "curl_easy_setopt expects a 'curl_mime ' " "argument for this option") _CURL_WARNING(_curl_easy_setopt_err_curl_slist, "curl_easy_setopt expects a 'struct curl_slist ' argument for this option") _CURL_WARNING(_curl_easy_setopt_err_CURLSH, "curl_easy_setopt expects a CURLSH* argument for this option") _CURL_WARNING(_curl_easy_getinfo_err_string, "curl_easy_getinfo expects a pointer to 'char ' for this info") _CURL_WARNING(_curl_easy_getinfo_err_long, "curl_easy_getinfo expects a pointer to long for this info") _CURL_WARNING(_curl_easy_getinfo_err_double, "curl_easy_getinfo expects a pointer to double for this info") _CURL_WARNING(_curl_easy_getinfo_err_curl_slist, "curl_easy_getinfo expects a pointer to 'struct curl_slist ' for this info") _CURL_WARNING(_curl_easy_getinfo_err_curl_tlssesssioninfo, "curl_easy_getinfo expects a pointer to " "'struct curl_tlssessioninfo ' for this info") _CURL_WARNING(_curl_easy_getinfo_err_curl_certinfo, "curl_easy_getinfo expects a pointer to " "'struct curl_certinfo ' for this info") _CURL_WARNING(_curl_easy_getinfo_err_curl_socket, "curl_easy_getinfo expects a pointer to curl_socket_t for this info") _CURL_WARNING(_curl_easy_getinfo_err_curl_off_t, "curl_easy_getinfo expects a pointer to curl_off_t for this info") /* groups of curl_easy_setops options that take the same type of argument / / To add a new option to one of the groups, just add * (option) == CURLOPT_SOMETHING * to the or-expression. If the option takes a long or curl_off_t, you don't * have to do anything / / evaluates to true if option takes a long argument / #define _curl_is_long_option(option) \ (0 < (option) && (option) < CURLOPTTYPE_OBJECTPOINT) #define _curl_is_off_t_option(option) \ ((option) > CURLOPTTYPE_OFF_T) / evaluates to true if option takes a char* argument / #define _curl_is_string_option(option) \ ((option) == CURLOPT_ABSTRACT_UNIX_SOCKET \|\| \ (option) == CURLOPT_ACCEPT_ENCODING \|\| \ (option) == CURLOPT_CAINFO \|\| \ (option) == CURLOPT_CAPATH \|\| \ (option) == CURLOPT_COOKIE \|\| \ (option) == CURLOPT_COOKIEFILE \|\| \ (option) == CURLOPT_COOKIEJAR \|\| \ (option) == CURLOPT_COOKIELIST \|\| \ (option) == CURLOPT_CRLFILE \|\| \ (option) == CURLOPT_CUSTOMREQUEST \|\| \ (option) == CURLOPT_DEFAULT_PROTOCOL \|\| \ (option) == CURLOPT_DNS_INTERFACE \|\| \ (option) == CURLOPT_DNS_LOCAL_IP4 \|\| \ (option) == CURLOPT_DNS_LOCAL_IP6 \|\| \ (option) == CURLOPT_DNS_SERVERS \|\| \ (option) == CURLOPT_EGDSOCKET \|\| \ (option) == CURLOPT_FTPPORT \|\| \ (option) == CURLOPT_FTP_ACCOUNT \|\| \ (option) == CURLOPT_FTP_ALTERNATIVE_TO_USER \|\| \ (option) == CURLOPT_INTERFACE \|\| \ (option) == CURLOPT_ISSUERCERT \|\| \ (option) == CURLOPT_KEYPASSWD \|\| \ (option) == CURLOPT_KRBLEVEL \|\| \ (option) == CURLOPT_LOGIN_OPTIONS \|\| \ (option) == CURLOPT_MAIL_AUTH \|\| \ (option) == CURLOPT_MAIL_FROM \|\| \ (option) == CURLOPT_NETRC_FILE \|\| \ (option) == CURLOPT_NOPROXY \|\| \ (option) == CURLOPT_PASSWORD \|\| \ (option) == CURLOPT_PINNEDPUBLICKEY \|\| \ (option) == CURLOPT_PRE_PROXY \|\| \ (option) == CURLOPT_PROXY \|\| \ (option) == CURLOPT_PROXYPASSWORD \|\| \ (option) == CURLOPT_PROXYUSERNAME \|\| \ (option) == CURLOPT_PROXYUSERPWD \|\| \ (option) == CURLOPT_PROXY_CAINFO \|\| \ (option) == CURLOPT_PROXY_CAPATH \|\| \ (option) == CURLOPT_PROXY_CRLFILE \|\| \ (option) == CURLOPT_PROXY_KEYPASSWD \|\| \ (option) == CURLOPT_PROXY_PINNEDPUBLICKEY \|\| \ (option) == CURLOPT_PROXY_SERVICE_NAME \|\| \ (option) == CURLOPT_PROXY_SSLCERT \|\| \ (option) == CURLOPT_PROXY_SSLCERTTYPE \|\| \ (option) == CURLOPT_PROXY_SSLKEY \|\| \ (option) == CURLOPT_PROXY_SSLKEYTYPE \|\| \ (option) == CURLOPT_PROXY_SSL_CIPHER_LIST \|\| \ (option) == CURLOPT_PROXY_TLSAUTH_PASSWORD \|\| \ (option) == CURLOPT_PROXY_TLSAUTH_USERNAME \|\| \ (option) == CURLOPT_PROXY_TLSAUTH_TYPE \|\| \ (option) == CURLOPT_RANDOM_FILE \|\| \ (option) == CURLOPT_RANGE \|\| \ (option) == CURLOPT_REFERER \|\| \ (option) == CURLOPT_RTSP_SESSION_ID \|\| \ (option) == CURLOPT_RTSP_STREAM_URI \|\| \ (option) == CURLOPT_RTSP_TRANSPORT \|\| \ (option) == CURLOPT_SERVICE_NAME \|\| \ (option) == CURLOPT_SOCKS5_GSSAPI_SERVICE \|\| \ (option) == CURLOPT_SSH_HOST_PUBLIC_KEY_MD5 \|\| \ (option) == CURLOPT_SSH_KNOWNHOSTS \|\| \ (option) == CURLOPT_SSH_PRIVATE_KEYFILE \|\| \ (option) == CURLOPT_SSH_PUBLIC_KEYFILE \|\| \ (option) == CURLOPT_SSLCERT \|\| \ (option) == CURLOPT_SSLCERTTYPE \|\| \ (option) == CURLOPT_SSLENGINE \|\| \ (option) == CURLOPT_SSLKEY \|\| \ (option) == CURLOPT_SSLKEYTYPE \|\| \ (option) == CURLOPT_SSL_CIPHER_LIST \|\| \ (option) == CURLOPT_TLSAUTH_PASSWORD \|\| \ (option) == CURLOPT_TLSAUTH_TYPE \|\| \ (option) == CURLOPT_TLSAUTH_USERNAME \|\| \ (option) == CURLOPT_UNIX_SOCKET_PATH \|\| \ (option) == CURLOPT_URL \|\| \ (option) == CURLOPT_USERAGENT \|\| \ (option) == CURLOPT_USERNAME \|\| \ (option) == CURLOPT_USERPWD \|\| \ (option) == CURLOPT_XOAUTH2_BEARER \|\| \ 0) / evaluates to true if option takes a curl_write_callback argument / #define _curl_is_write_cb_option(option) \ ((option) == CURLOPT_HEADERFUNCTION \|\| \ (option) == CURLOPT_WRITEFUNCTION) / evaluates to true if option takes a curl_conv_callback argument / #define _curl_is_conv_cb_option(option) \ ((option) == CURLOPT_CONV_TO_NETWORK_FUNCTION \|\| \ (option) == CURLOPT_CONV_FROM_NETWORK_FUNCTION \|\| \ (option) == CURLOPT_CONV_FROM_UTF8_FUNCTION) / evaluates to true if option takes a data argument to pass to a callback / #define _curl_is_cb_data_option(option) \ ((option) == CURLOPT_CHUNK_DATA \|\| \ (option) == CURLOPT_CLOSESOCKETDATA \|\| \ (option) == CURLOPT_DEBUGDATA \|\| \ (option) == CURLOPT_FNMATCH_DATA \|\| \ (option) == CURLOPT_HEADERDATA \|\| \ (option) == CURLOPT_INTERLEAVEDATA \|\| \ (option) == CURLOPT_IOCTLDATA \|\| \ (option) == CURLOPT_OPENSOCKETDATA \|\| \ (option) == CURLOPT_PRIVATE \|\| \ (option) == CURLOPT_PROGRESSDATA \|\| \ (option) == CURLOPT_READDATA \|\| \ (option) == CURLOPT_SEEKDATA \|\| \ (option) == CURLOPT_SOCKOPTDATA \|\| \ (option) == CURLOPT_SSH_KEYDATA \|\| \ (option) == CURLOPT_SSL_CTX_DATA \|\| \ (option) == CURLOPT_WRITEDATA \|\| \ (option) == CURLOPT_RESOLVER_START_DATA \|\| \ 0) / evaluates to true if option takes a POST data argument (void* or char) / #define _curl_is_postfields_option(option) \ ((option) == CURLOPT_POSTFIELDS \|\| \ (option) == CURLOPT_COPYPOSTFIELDS \|\| \ 0) /* evaluates to true if option takes a struct curl_slist * argument / #define _curl_is_slist_option(option) \ ((option) == CURLOPT_HTTP200ALIASES \|\| \ (option) == CURLOPT_HTTPHEADER \|\| \ (option) == CURLOPT_MAIL_RCPT \|\| \ (option) == CURLOPT_POSTQUOTE \|\| \ (option) == CURLOPT_PREQUOTE \|\| \ (option) == CURLOPT_PROXYHEADER \|\| \ (option) == CURLOPT_QUOTE \|\| \ (option) == CURLOPT_RESOLVE \|\| \ (option) == CURLOPT_TELNETOPTIONS \|\| \ 0) / groups of curl_easy_getinfo infos that take the same type of argument / / evaluates to true if info expects a pointer to char * argument / #define _curl_is_string_info(info) \ (CURLINFO_STRING < (info) && (info) < CURLINFO_LONG) / evaluates to true if info expects a pointer to long argument / #define _curl_is_long_info(info) \ (CURLINFO_LONG < (info) && (info) < CURLINFO_DOUBLE) / evaluates to true if info expects a pointer to double argument / #define _curl_is_double_info(info) \ (CURLINFO_DOUBLE < (info) && (info) < CURLINFO_SLIST) / true if info expects a pointer to struct curl_slist * argument / #define _curl_is_slist_info(info) \ (((info) == CURLINFO_SSL_ENGINES) \|\| ((info) == CURLINFO_COOKIELIST)) / true if info expects a pointer to struct curl_tlssessioninfo * argument / #define _curl_is_tlssessioninfo_info(info) \ (((info) == CURLINFO_TLS_SSL_PTR) \|\| ((info) == CURLINFO_TLS_SESSION)) / true if info expects a pointer to struct curl_certinfo * argument / #define _curl_is_certinfo_info(info) ((info) == CURLINFO_CERTINFO) / true if info expects a pointer to struct curl_socket_t argument / #define _curl_is_socket_info(info) \ (CURLINFO_SOCKET < (info) && (info) < CURLINFO_OFF_T) / true if info expects a pointer to curl_off_t argument / #define _curl_is_off_t_info(info) \ (CURLINFO_OFF_T < (info)) / typecheck helpers -- check whether given expression has requested type/ / For pointers, you can use the _curl_is_ptr/_curl_is_arr macros, * otherwise define a new macro. Search for __builtin_types_compatible_p * in the GCC manual. * NOTE: these macros MUST NOT EVALUATE their arguments! The argument is * the actual expression passed to the curl_easy_setopt macro. This * means that you can only apply the sizeof and __typeof__ operators, no * == or whatsoever. / / XXX: should evaluate to true if expr is a pointer / #define _curl_is_any_ptr(expr) \ (sizeof(expr) == sizeof(void )) /* evaluates to true if expr is NULL / / XXX: must not evaluate expr, so this check is not accurate / #define _curl_is_NULL(expr) \ (__builtin_types_compatible_p(__typeof__(expr), __typeof__(NULL))) / evaluates to true if expr is type, const type or NULL / #define _curl_is_ptr(expr, type) \ (_curl_is_NULL(expr) \|\| \ __builtin_types_compatible_p(__typeof__(expr), type ) \|\| \ __builtin_types_compatible_p(__typeof__(expr), const type )) / evaluates to true if expr is one of type[], type, NULL or const type / #define _curl_is_arr(expr, type) \ (_curl_is_ptr((expr), type) \|\| \ __builtin_types_compatible_p(__typeof__(expr), type [])) / evaluates to true if expr is a string / #define _curl_is_string(expr) \ (_curl_is_arr((expr), char) \|\| \ _curl_is_arr((expr), signed char) \|\| \ _curl_is_arr((expr), unsigned char)) / evaluates to true if expr is a long (no matter the signedness) * XXX: for now, int is also accepted (and therefore short and char, which * are promoted to int when passed to a variadic function) / #define _curl_is_long(expr) \ (__builtin_types_compatible_p(__typeof__(expr), long) \|\| \ __builtin_types_compatible_p(__typeof__(expr), signed long) \|\| \ __builtin_types_compatible_p(__typeof__(expr), unsigned long) \|\| \ __builtin_types_compatible_p(__typeof__(expr), int) \|\| \ __builtin_types_compatible_p(__typeof__(expr), signed int) \|\| \ __builtin_types_compatible_p(__typeof__(expr), unsigned int) \|\| \ __builtin_types_compatible_p(__typeof__(expr), short) \|\| \ __builtin_types_compatible_p(__typeof__(expr), signed short) \|\| \ __builtin_types_compatible_p(__typeof__(expr), unsigned short) \|\| \ __builtin_types_compatible_p(__typeof__(expr), char) \|\| \ __builtin_types_compatible_p(__typeof__(expr), signed char) \|\| \ __builtin_types_compatible_p(__typeof__(expr), unsigned char)) / evaluates to true if expr is of type curl_off_t / #define _curl_is_off_t(expr) \ (__builtin_types_compatible_p(__typeof__(expr), curl_off_t)) / evaluates to true if expr is abuffer suitable for CURLOPT_ERRORBUFFER / / XXX: also check size of an char[] array? / #define _curl_is_error_buffer(expr) \ (_curl_is_NULL(expr) \|\| \ __builtin_types_compatible_p(__typeof__(expr), char ) \|\| \ __builtin_types_compatible_p(__typeof__(expr), char[])) /* evaluates to true if expr is of type (const) void* or (const) FILE* / #if 0 #define _curl_is_cb_data(expr) \ (_curl_is_ptr((expr), void) \|\| \ _curl_is_ptr((expr), FILE)) #else / be less strict / #define _curl_is_cb_data(expr) \ _curl_is_any_ptr(expr) #endif / evaluates to true if expr is of type FILE* / #define _curl_is_FILE(expr) \ (_curl_is_NULL(expr) \|\| \ (__builtin_types_compatible_p(__typeof__(expr), FILE ))) /* evaluates to true if expr can be passed as POST data (void* or char) / #define _curl_is_postfields(expr) \ (_curl_is_ptr((expr), void) \|\| \ _curl_is_arr((expr), char)) /* FIXME: the whole callback checking is messy... * The idea is to tolerate char vs. void and const vs. not const * pointers in arguments at least / / helper: __builtin_types_compatible_p distinguishes between functions and * function pointers, hide it / #define _curl_callback_compatible(func, type) \ (__builtin_types_compatible_p(__typeof__(func), type) \|\| \ __builtin_types_compatible_p(__typeof__(func) , type)) /* evaluates to true if expr is of type curl_resolver_start_callback / #define _curl_is_resolver_start_callback(expr) \ (_curl_is_NULL(expr) \|\| \ _curl_callback_compatible((expr), curl_resolver_start_callback)) / evaluates to true if expr is of type curl_read_callback or "similar" / #define _curl_is_read_cb(expr) \ (_curl_is_NULL(expr) \|\| \ _curl_callback_compatible((expr), __typeof__(fread) ) \|\| \ _curl_callback_compatible((expr), curl_read_callback) \|\| \ _curl_callback_compatible((expr), _curl_read_callback1) \|\| \ _curl_callback_compatible((expr), _curl_read_callback2) \|\| \ _curl_callback_compatible((expr), _curl_read_callback3) \|\| \ _curl_callback_compatible((expr), _curl_read_callback4) \|\| \ _curl_callback_compatible((expr), _curl_read_callback5) \|\| \ _curl_callback_compatible((expr), _curl_read_callback6)) typedef size_t (_curl_read_callback1)(char , size_t, size_t, void ); typedef size_t (_curl_read_callback2)(char , size_t, size_t, const void ); typedef size_t (_curl_read_callback3)(char , size_t, size_t, FILE ); typedef size_t (_curl_read_callback4)(void , size_t, size_t, void ); typedef size_t (_curl_read_callback5)(void , size_t, size_t, const void ); typedef size_t (_curl_read_callback6)(void , size_t, size_t, FILE ); /* evaluates to true if expr is of type curl_write_callback or "similar" / #define _curl_is_write_cb(expr) \ (_curl_is_read_cb(expr) \|\| \ _curl_callback_compatible((expr), __typeof__(fwrite) ) \|\| \ _curl_callback_compatible((expr), curl_write_callback) \|\| \ _curl_callback_compatible((expr), _curl_write_callback1) \|\| \ _curl_callback_compatible((expr), _curl_write_callback2) \|\| \ _curl_callback_compatible((expr), _curl_write_callback3) \|\| \ _curl_callback_compatible((expr), _curl_write_callback4) \|\| \ _curl_callback_compatible((expr), _curl_write_callback5) \|\| \ _curl_callback_compatible((expr), _curl_write_callback6)) typedef size_t (_curl_write_callback1)(const char , size_t, size_t, void ); typedef size_t (_curl_write_callback2)(const char , size_t, size_t, const void ); typedef size_t (_curl_write_callback3)(const char , size_t, size_t, FILE ); typedef size_t (_curl_write_callback4)(const void , size_t, size_t, void ); typedef size_t (_curl_write_callback5)(const void , size_t, size_t, const void ); typedef size_t (_curl_write_callback6)(const void , size_t, size_t, FILE ); /* evaluates to true if expr is of type curl_ioctl_callback or "similar" / #define _curl_is_ioctl_cb(expr) \ (_curl_is_NULL(expr) \|\| \ _curl_callback_compatible((expr), curl_ioctl_callback) \|\| \ _curl_callback_compatible((expr), _curl_ioctl_callback1) \|\| \ _curl_callback_compatible((expr), _curl_ioctl_callback2) \|\| \ _curl_callback_compatible((expr), _curl_ioctl_callback3) \|\| \ _curl_callback_compatible((expr), _curl_ioctl_callback4)) typedef curlioerr (_curl_ioctl_callback1)(CURL , int, void ); typedef curlioerr (_curl_ioctl_callback2)(CURL , int, const void ); typedef curlioerr (_curl_ioctl_callback3)(CURL , curliocmd, void ); typedef curlioerr (_curl_ioctl_callback4)(CURL , curliocmd, const void ); / evaluates to true if expr is of type curl_sockopt_callback or "similar" / #define _curl_is_sockopt_cb(expr) \ (_curl_is_NULL(expr) \|\| \ _curl_callback_compatible((expr), curl_sockopt_callback) \|\| \ _curl_callback_compatible((expr), _curl_sockopt_callback1) \|\| \ _curl_callback_compatible((expr), _curl_sockopt_callback2)) typedef int (_curl_sockopt_callback1)(void , curl_socket_t, curlsocktype); typedef int (_curl_sockopt_callback2)(const void , curl_socket_t, curlsocktype); / evaluates to true if expr is of type curl_opensocket_callback or "similar" / #define _curl_is_opensocket_cb(expr) \ (_curl_is_NULL(expr) \|\| \ _curl_callback_compatible((expr), curl_opensocket_callback) \|\| \ _curl_callback_compatible((expr), _curl_opensocket_callback1) \|\| \ _curl_callback_compatible((expr), _curl_opensocket_callback2) \|\| \ _curl_callback_compatible((expr), _curl_opensocket_callback3) \|\| \ _curl_callback_compatible((expr), _curl_opensocket_callback4)) typedef curl_socket_t (_curl_opensocket_callback1) (void , curlsocktype, struct curl_sockaddr ); typedef curl_socket_t (_curl_opensocket_callback2) (void , curlsocktype, const struct curl_sockaddr ); typedef curl_socket_t (_curl_opensocket_callback3) (const void , curlsocktype, struct curl_sockaddr ); typedef curl_socket_t (_curl_opensocket_callback4) (const void , curlsocktype, const struct curl_sockaddr ); / evaluates to true if expr is of type curl_progress_callback or "similar" / #define _curl_is_progress_cb(expr) \ (_curl_is_NULL(expr) \|\| \ _curl_callback_compatible((expr), curl_progress_callback) \|\| \ _curl_callback_compatible((expr), _curl_progress_callback1) \|\| \ _curl_callback_compatible((expr), _curl_progress_callback2)) typedef int (_curl_progress_callback1)(void , double, double, double, double); typedef int (_curl_progress_callback2)(const void , double, double, double, double); / evaluates to true if expr is of type curl_debug_callback or "similar" / #define _curl_is_debug_cb(expr) \ (_curl_is_NULL(expr) \|\| \ _curl_callback_compatible((expr), curl_debug_callback) \|\| \ _curl_callback_compatible((expr), _curl_debug_callback1) \|\| \ _curl_callback_compatible((expr), _curl_debug_callback2) \|\| \ _curl_callback_compatible((expr), _curl_debug_callback3) \|\| \ _curl_callback_compatible((expr), _curl_debug_callback4) \|\| \ _curl_callback_compatible((expr), _curl_debug_callback5) \|\| \ _curl_callback_compatible((expr), _curl_debug_callback6) \|\| \ _curl_callback_compatible((expr), _curl_debug_callback7) \|\| \ _curl_callback_compatible((expr), _curl_debug_callback8)) typedef int (_curl_debug_callback1) (CURL , curl_infotype, char , size_t, void ); typedef int (_curl_debug_callback2) (CURL , curl_infotype, char , size_t, const void ); typedef int (_curl_debug_callback3) (CURL , curl_infotype, const char , size_t, void ); typedef int (_curl_debug_callback4) (CURL , curl_infotype, const char , size_t, const void ); typedef int (_curl_debug_callback5) (CURL , curl_infotype, unsigned char , size_t, void ); typedef int (_curl_debug_callback6) (CURL , curl_infotype, unsigned char , size_t, const void ); typedef int (_curl_debug_callback7) (CURL , curl_infotype, const unsigned char , size_t, void ); typedef int (_curl_debug_callback8) (CURL , curl_infotype, const unsigned char , size_t, const void ); / evaluates to true if expr is of type curl_ssl_ctx_callback or "similar" / / this is getting even messier... / #define _curl_is_ssl_ctx_cb(expr) \ (_curl_is_NULL(expr) \|\| \ _curl_callback_compatible((expr), curl_ssl_ctx_callback) \|\| \ _curl_callback_compatible((expr), _curl_ssl_ctx_callback1) \|\| \ _curl_callback_compatible((expr), _curl_ssl_ctx_callback2) \|\| \ _curl_callback_compatible((expr), _curl_ssl_ctx_callback3) \|\| \ _curl_callback_compatible((expr), _curl_ssl_ctx_callback4) \|\| \ _curl_callback_compatible((expr), _curl_ssl_ctx_callback5) \|\| \ _curl_callback_compatible((expr), _curl_ssl_ctx_callback6) \|\| \ _curl_callback_compatible((expr), _curl_ssl_ctx_callback7) \|\| \ _curl_callback_compatible((expr), _curl_ssl_ctx_callback8)) typedef CURLcode (_curl_ssl_ctx_callback1)(CURL , void , void ); typedef CURLcode (_curl_ssl_ctx_callback2)(CURL , void , const void ); typedef CURLcode (_curl_ssl_ctx_callback3)(CURL , const void , void ); typedef CURLcode (_curl_ssl_ctx_callback4)(CURL , const void , const void ); #ifdef HEADER_SSL_H / hack: if we included OpenSSL's ssl.h, we know about SSL_CTX * this will of course break if we're included before OpenSSL headers... / typedef CURLcode (_curl_ssl_ctx_callback5)(CURL , SSL_CTX, void ); typedef CURLcode (_curl_ssl_ctx_callback6)(CURL , SSL_CTX, const void ); typedef CURLcode (_curl_ssl_ctx_callback7)(CURL , const SSL_CTX, void ); typedef CURLcode (_curl_ssl_ctx_callback8)(CURL , const SSL_CTX, const void ); #else typedef _curl_ssl_ctx_callback1 _curl_ssl_ctx_callback5; typedef _curl_ssl_ctx_callback1 _curl_ssl_ctx_callback6; typedef _curl_ssl_ctx_callback1 _curl_ssl_ctx_callback7; typedef _curl_ssl_ctx_callback1 _curl_ssl_ctx_callback8; #endif / evaluates to true if expr is of type curl_conv_callback or "similar" / #define _curl_is_conv_cb(expr) \ (_curl_is_NULL(expr) \|\| \ _curl_callback_compatible((expr), curl_conv_callback) \|\| \ _curl_callback_compatible((expr), _curl_conv_callback1) \|\| \ _curl_callback_compatible((expr), _curl_conv_callback2) \|\| \ _curl_callback_compatible((expr), _curl_conv_callback3) \|\| \ _curl_callback_compatible((expr), _curl_conv_callback4)) typedef CURLcode (_curl_conv_callback1)(char , size_t length); typedef CURLcode (_curl_conv_callback2)(const char , size_t length); typedef CURLcode (_curl_conv_callback3)(void , size_t length); typedef CURLcode (_curl_conv_callback4)(const void , size_t length); / evaluates to true if expr is of type curl_seek_callback or "similar" / #define _curl_is_seek_cb(expr) \ (_curl_is_NULL(expr) \|\| \ _curl_callback_compatible((expr), curl_seek_callback) \|\| \ _curl_callback_compatible((expr), _curl_seek_callback1) \|\| \ _curl_callback_compatible((expr), _curl_seek_callback2)) typedef CURLcode (_curl_seek_callback1)(void , curl_off_t, int); typedef CURLcode (_curl_seek_callback2)(const void , curl_off_t, int); #endif / __CURL_TYPECHECK_GCC_H */ Back

Edit File : typecheck-gcc.h | Size : 42.20 KB

#ifndef __CURL_TYPECHECK_GCC_H
#define __CURL_TYPECHECK_GCC_H
/***************************************************************************
 *                                  _   _ ____  _
 *  Project                     ___| | | |  _ \| |
 *                             / __| | | | |_) | |
 *                            | (__| |_| |  _ <| |___
 *                             \___|\___/|_| \_\_____|
 *
 * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al.
 *
 * This software is licensed as described in the file COPYING, which
 * you should have received as part of this distribution. The terms
 * are also available at https://curl.haxx.se/docs/copyright.html.
 *
 * You may opt to use, copy, modify, merge, publish, distribute and/or sell
 * copies of the Software, and permit persons to whom the Software is
 * furnished to do so, under the terms of the COPYING file.
 *
 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
 * KIND, either express or implied.
 *
 ***************************************************************************/

/* wraps curl_easy_setopt() with typechecking */

/* To add a new kind of warning, add an
 *   if(_curl_is_sometype_option(_curl_opt))
 *     if(!_curl_is_sometype(value))
 *       _curl_easy_setopt_err_sometype();
 * block and define _curl_is_sometype_option, _curl_is_sometype and
 * _curl_easy_setopt_err_sometype below
 *
 * NOTE: We use two nested 'if' statements here instead of the && operator, in
 *       order to work around gcc bug #32061.  It affects only gcc 4.3.x/4.4.x
 *       when compiling with -Wlogical-op.
 *
 * To add an option that uses the same type as an existing option, you'll just
 * need to extend the appropriate _curl_*_option macro
 */
#define curl_easy_setopt(handle, option, value)                               \
__extension__ ({                                                              \
  __typeof__(option) _curl_opt = option;                                     \
  if(__builtin_constant_p(_curl_opt)) {                                       \
    if(_curl_is_long_option(_curl_opt))                                       \
      if(!_curl_is_long(value))                                               \
        _curl_easy_setopt_err_long();                                         \
    if(_curl_is_off_t_option(_curl_opt))                                      \
      if(!_curl_is_off_t(value))                                              \
        _curl_easy_setopt_err_curl_off_t();                                   \
    if(_curl_is_string_option(_curl_opt))                                     \
      if(!_curl_is_string(value))                                             \
        _curl_easy_setopt_err_string();                                       \
    if(_curl_is_write_cb_option(_curl_opt))                                   \
      if(!_curl_is_write_cb(value))                                           \
        _curl_easy_setopt_err_write_callback();                               \
    if((_curl_opt) == CURLOPT_RESOLVER_START_FUNCTION)                        \
      if(!_curl_is_resolver_start_callback(value))                            \
        _curl_easy_setopt_err_resolver_start_callback();                      \
    if((_curl_opt) == CURLOPT_READFUNCTION)                                   \
      if(!_curl_is_read_cb(value))                                            \
        _curl_easy_setopt_err_read_cb();                                      \
    if((_curl_opt) == CURLOPT_IOCTLFUNCTION)                                  \
      if(!_curl_is_ioctl_cb(value))                                           \
        _curl_easy_setopt_err_ioctl_cb();                                     \
    if((_curl_opt) == CURLOPT_SOCKOPTFUNCTION)                                \
      if(!_curl_is_sockopt_cb(value))                                         \
        _curl_easy_setopt_err_sockopt_cb();                                   \
    if((_curl_opt) == CURLOPT_OPENSOCKETFUNCTION)                             \
      if(!_curl_is_opensocket_cb(value))                                      \
        _curl_easy_setopt_err_opensocket_cb();                                \
    if((_curl_opt) == CURLOPT_PROGRESSFUNCTION)                               \
      if(!_curl_is_progress_cb(value))                                        \
        _curl_easy_setopt_err_progress_cb();                                  \
    if((_curl_opt) == CURLOPT_DEBUGFUNCTION)                                  \
      if(!_curl_is_debug_cb(value))                                           \
        _curl_easy_setopt_err_debug_cb();                                     \
    if((_curl_opt) == CURLOPT_SSL_CTX_FUNCTION)                               \
      if(!_curl_is_ssl_ctx_cb(value))                                         \
        _curl_easy_setopt_err_ssl_ctx_cb();                                   \
    if(_curl_is_conv_cb_option(_curl_opt))                                    \
      if(!_curl_is_conv_cb(value))                                            \
        _curl_easy_setopt_err_conv_cb();                                      \
    if((_curl_opt) == CURLOPT_SEEKFUNCTION)                                   \
      if(!_curl_is_seek_cb(value))                                            \
        _curl_easy_setopt_err_seek_cb();                                      \
    if(_curl_is_cb_data_option(_curl_opt))                                    \
      if(!_curl_is_cb_data(value))                                            \
        _curl_easy_setopt_err_cb_data();                                      \
    if((_curl_opt) == CURLOPT_ERRORBUFFER)                                    \
      if(!_curl_is_error_buffer(value))                                       \
        _curl_easy_setopt_err_error_buffer();                                 \
    if((_curl_opt) == CURLOPT_STDERR)                                         \
      if(!_curl_is_FILE(value))                                               \
        _curl_easy_setopt_err_FILE();                                         \
    if(_curl_is_postfields_option(_curl_opt))                                 \
      if(!_curl_is_postfields(value))                                         \
        _curl_easy_setopt_err_postfields();                                   \
    if((_curl_opt) == CURLOPT_HTTPPOST)                                       \
      if(!_curl_is_arr((value), struct curl_httppost))                        \
        _curl_easy_setopt_err_curl_httpost();                                 \
    if((_curl_opt) == CURLOPT_MIMEPOST)                                       \
      if(!_curl_is_ptr((value), curl_mime))                                   \
        _curl_easy_setopt_err_curl_mimepost();                                \
    if(_curl_is_slist_option(_curl_opt))                                      \
      if(!_curl_is_arr((value), struct curl_slist))                           \
        _curl_easy_setopt_err_curl_slist();                                   \
    if((_curl_opt) == CURLOPT_SHARE)                                          \
      if(!_curl_is_ptr((value), CURLSH))                                      \
        _curl_easy_setopt_err_CURLSH();                                       \
  }                                                                           \
  curl_easy_setopt(handle, _curl_opt, value);                                 \
})

/* wraps curl_easy_getinfo() with typechecking */
/* FIXME: don't allow const pointers */
#define curl_easy_getinfo(handle, info, arg)                                  \
__extension__ ({                                                              \
  __typeof__(info) _curl_info = info;                                         \
  if(__builtin_constant_p(_curl_info)) {                                      \
    if(_curl_is_string_info(_curl_info))                                      \
      if(!_curl_is_arr((arg), char *))                                        \
        _curl_easy_getinfo_err_string();                                      \
    if(_curl_is_long_info(_curl_info))                                        \
      if(!_curl_is_arr((arg), long))                                          \
        _curl_easy_getinfo_err_long();                                        \
    if(_curl_is_double_info(_curl_info))                                      \
      if(!_curl_is_arr((arg), double))                                        \
        _curl_easy_getinfo_err_double();                                      \
    if(_curl_is_slist_info(_curl_info))                                       \
      if(!_curl_is_arr((arg), struct curl_slist *))                           \
        _curl_easy_getinfo_err_curl_slist();                                  \
    if(_curl_is_tlssessioninfo_info(_curl_info))                              \
      if(!_curl_is_arr((arg), struct curl_tlssessioninfo *))                  \
        _curl_easy_getinfo_err_curl_tlssesssioninfo();                        \
    if(_curl_is_certinfo_info(_curl_info))                                    \
      if(!_curl_is_arr((arg), struct curl_certinfo *))                        \
        _curl_easy_getinfo_err_curl_certinfo();                               \
    if(_curl_is_socket_info(_curl_info))                                      \
      if(!_curl_is_arr((arg), curl_socket_t))                                 \
        _curl_easy_getinfo_err_curl_socket();                                 \
    if(_curl_is_off_t_info(_curl_info))                                       \
      if(!_curl_is_arr((arg), curl_off_t))                                    \
        _curl_easy_getinfo_err_curl_off_t();                                  \
  }                                                                           \
  curl_easy_getinfo(handle, _curl_info, arg);                                 \
})

/* TODO: typechecking for curl_share_setopt() and curl_multi_setopt(),
 * for now just make sure that the functions are called with three
 * arguments
 */
#define curl_share_setopt(share,opt,param) curl_share_setopt(share,opt,param)
#define curl_multi_setopt(handle,opt,param) curl_multi_setopt(handle,opt,param)

/* the actual warnings, triggered by calling the _curl_easy_setopt_err*
 * functions */

/* To define a new warning, use _CURL_WARNING(identifier, "message") */
#define _CURL_WARNING(id, message)                                            \
  static void __attribute__((__warning__(message)))                           \
  __attribute__((__unused__)) __attribute__((__noinline__))                   \
  id(void) { __asm__(""); }

_CURL_WARNING(_curl_easy_setopt_err_long,
  "curl_easy_setopt expects a long argument for this option")
_CURL_WARNING(_curl_easy_setopt_err_curl_off_t,
  "curl_easy_setopt expects a curl_off_t argument for this option")
_CURL_WARNING(_curl_easy_setopt_err_string,
              "curl_easy_setopt expects a "
              "string ('char *' or char[]) argument for this option"
  )
_CURL_WARNING(_curl_easy_setopt_err_write_callback,
  "curl_easy_setopt expects a curl_write_callback argument for this option")
_CURL_WARNING(_curl_easy_setopt_err_resolver_start_callback,
              "curl_easy_setopt expects a "
              "curl_resolver_start_callback argument for this option"
  )
_CURL_WARNING(_curl_easy_setopt_err_read_cb,
  "curl_easy_setopt expects a curl_read_callback argument for this option")
_CURL_WARNING(_curl_easy_setopt_err_ioctl_cb,
  "curl_easy_setopt expects a curl_ioctl_callback argument for this option")
_CURL_WARNING(_curl_easy_setopt_err_sockopt_cb,
  "curl_easy_setopt expects a curl_sockopt_callback argument for this option")
_CURL_WARNING(_curl_easy_setopt_err_opensocket_cb,
              "curl_easy_setopt expects a "
              "curl_opensocket_callback argument for this option"
  )
_CURL_WARNING(_curl_easy_setopt_err_progress_cb,
  "curl_easy_setopt expects a curl_progress_callback argument for this option")
_CURL_WARNING(_curl_easy_setopt_err_debug_cb,
  "curl_easy_setopt expects a curl_debug_callback argument for this option")
_CURL_WARNING(_curl_easy_setopt_err_ssl_ctx_cb,
  "curl_easy_setopt expects a curl_ssl_ctx_callback argument for this option")
_CURL_WARNING(_curl_easy_setopt_err_conv_cb,
  "curl_easy_setopt expects a curl_conv_callback argument for this option")
_CURL_WARNING(_curl_easy_setopt_err_seek_cb,
  "curl_easy_setopt expects a curl_seek_callback argument for this option")
_CURL_WARNING(_curl_easy_setopt_err_cb_data,
              "curl_easy_setopt expects a "
              "private data pointer as argument for this option")
_CURL_WARNING(_curl_easy_setopt_err_error_buffer,
              "curl_easy_setopt expects a "
              "char buffer of CURL_ERROR_SIZE as argument for this option")
_CURL_WARNING(_curl_easy_setopt_err_FILE,
  "curl_easy_setopt expects a 'FILE *' argument for this option")
_CURL_WARNING(_curl_easy_setopt_err_postfields,
  "curl_easy_setopt expects a 'void *' or 'char *' argument for this option")
_CURL_WARNING(_curl_easy_setopt_err_curl_httpost,
              "curl_easy_setopt expects a 'struct curl_httppost *' "
              "argument for this option")
_CURL_WARNING(_curl_easy_setopt_err_curl_mimepost,
              "curl_easy_setopt expects a 'curl_mime *' "
              "argument for this option")
_CURL_WARNING(_curl_easy_setopt_err_curl_slist,
  "curl_easy_setopt expects a 'struct curl_slist *' argument for this option")
_CURL_WARNING(_curl_easy_setopt_err_CURLSH,
  "curl_easy_setopt expects a CURLSH* argument for this option")

_CURL_WARNING(_curl_easy_getinfo_err_string,
  "curl_easy_getinfo expects a pointer to 'char *' for this info")
_CURL_WARNING(_curl_easy_getinfo_err_long,
  "curl_easy_getinfo expects a pointer to long for this info")
_CURL_WARNING(_curl_easy_getinfo_err_double,
  "curl_easy_getinfo expects a pointer to double for this info")
_CURL_WARNING(_curl_easy_getinfo_err_curl_slist,
  "curl_easy_getinfo expects a pointer to 'struct curl_slist *' for this info")
_CURL_WARNING(_curl_easy_getinfo_err_curl_tlssesssioninfo,
              "curl_easy_getinfo expects a pointer to "
              "'struct curl_tlssessioninfo *' for this info")
_CURL_WARNING(_curl_easy_getinfo_err_curl_certinfo,
              "curl_easy_getinfo expects a pointer to "
              "'struct curl_certinfo *' for this info")
_CURL_WARNING(_curl_easy_getinfo_err_curl_socket,
  "curl_easy_getinfo expects a pointer to curl_socket_t for this info")
_CURL_WARNING(_curl_easy_getinfo_err_curl_off_t,
  "curl_easy_getinfo expects a pointer to curl_off_t for this info")

/* groups of curl_easy_setops options that take the same type of argument */

/* To add a new option to one of the groups, just add
 *   (option) == CURLOPT_SOMETHING
 * to the or-expression. If the option takes a long or curl_off_t, you don't
 * have to do anything
 */

/* evaluates to true if option takes a long argument */
#define _curl_is_long_option(option)                                          \
  (0 < (option) && (option) < CURLOPTTYPE_OBJECTPOINT)

#define _curl_is_off_t_option(option)                                         \
  ((option) > CURLOPTTYPE_OFF_T)

/* evaluates to true if option takes a char* argument */
#define _curl_is_string_option(option)                                        \
  ((option) == CURLOPT_ABSTRACT_UNIX_SOCKET ||                                \
   (option) == CURLOPT_ACCEPT_ENCODING ||                                     \
   (option) == CURLOPT_CAINFO ||                                              \
   (option) == CURLOPT_CAPATH ||                                              \
   (option) == CURLOPT_COOKIE ||                                              \
   (option) == CURLOPT_COOKIEFILE ||                                          \
   (option) == CURLOPT_COOKIEJAR ||                                           \
   (option) == CURLOPT_COOKIELIST ||                                          \
   (option) == CURLOPT_CRLFILE ||                                             \
   (option) == CURLOPT_CUSTOMREQUEST ||                                       \
   (option) == CURLOPT_DEFAULT_PROTOCOL ||                                    \
   (option) == CURLOPT_DNS_INTERFACE ||                                       \
   (option) == CURLOPT_DNS_LOCAL_IP4 ||                                       \
   (option) == CURLOPT_DNS_LOCAL_IP6 ||                                       \
   (option) == CURLOPT_DNS_SERVERS ||                                         \
   (option) == CURLOPT_EGDSOCKET ||                                           \
   (option) == CURLOPT_FTPPORT ||                                             \
   (option) == CURLOPT_FTP_ACCOUNT ||                                         \
   (option) == CURLOPT_FTP_ALTERNATIVE_TO_USER ||                             \
   (option) == CURLOPT_INTERFACE ||                                           \
   (option) == CURLOPT_ISSUERCERT ||                                          \
   (option) == CURLOPT_KEYPASSWD ||                                           \
   (option) == CURLOPT_KRBLEVEL ||                                            \
   (option) == CURLOPT_LOGIN_OPTIONS ||                                       \
   (option) == CURLOPT_MAIL_AUTH ||                                           \
   (option) == CURLOPT_MAIL_FROM ||                                           \
   (option) == CURLOPT_NETRC_FILE ||                                          \
   (option) == CURLOPT_NOPROXY ||                                             \
   (option) == CURLOPT_PASSWORD ||                                            \
   (option) == CURLOPT_PINNEDPUBLICKEY ||                                     \
   (option) == CURLOPT_PRE_PROXY ||                                           \
   (option) == CURLOPT_PROXY ||                                               \
   (option) == CURLOPT_PROXYPASSWORD ||                                       \
   (option) == CURLOPT_PROXYUSERNAME ||                                       \
   (option) == CURLOPT_PROXYUSERPWD ||                                        \
   (option) == CURLOPT_PROXY_CAINFO ||                                        \
   (option) == CURLOPT_PROXY_CAPATH ||                                        \
   (option) == CURLOPT_PROXY_CRLFILE ||                                       \
   (option) == CURLOPT_PROXY_KEYPASSWD ||                                     \
   (option) == CURLOPT_PROXY_PINNEDPUBLICKEY ||                               \
   (option) == CURLOPT_PROXY_SERVICE_NAME ||                                  \
   (option) == CURLOPT_PROXY_SSLCERT ||                                       \
   (option) == CURLOPT_PROXY_SSLCERTTYPE ||                                   \
   (option) == CURLOPT_PROXY_SSLKEY ||                                        \
   (option) == CURLOPT_PROXY_SSLKEYTYPE ||                                    \
   (option) == CURLOPT_PROXY_SSL_CIPHER_LIST ||                               \
   (option) == CURLOPT_PROXY_TLSAUTH_PASSWORD ||                              \
   (option) == CURLOPT_PROXY_TLSAUTH_USERNAME ||                              \
   (option) == CURLOPT_PROXY_TLSAUTH_TYPE ||                                  \
   (option) == CURLOPT_RANDOM_FILE ||                                         \
   (option) == CURLOPT_RANGE ||                                               \
   (option) == CURLOPT_REFERER ||                                             \
   (option) == CURLOPT_RTSP_SESSION_ID ||                                     \
   (option) == CURLOPT_RTSP_STREAM_URI ||                                     \
   (option) == CURLOPT_RTSP_TRANSPORT ||                                      \
   (option) == CURLOPT_SERVICE_NAME ||                                        \
   (option) == CURLOPT_SOCKS5_GSSAPI_SERVICE ||                               \
   (option) == CURLOPT_SSH_HOST_PUBLIC_KEY_MD5 ||                             \
   (option) == CURLOPT_SSH_KNOWNHOSTS ||                                      \
   (option) == CURLOPT_SSH_PRIVATE_KEYFILE ||                                 \
   (option) == CURLOPT_SSH_PUBLIC_KEYFILE ||                                  \
   (option) == CURLOPT_SSLCERT ||                                             \
   (option) == CURLOPT_SSLCERTTYPE ||                                         \
   (option) == CURLOPT_SSLENGINE ||                                           \
   (option) == CURLOPT_SSLKEY ||                                              \
   (option) == CURLOPT_SSLKEYTYPE ||                                          \
   (option) == CURLOPT_SSL_CIPHER_LIST ||                                     \
   (option) == CURLOPT_TLSAUTH_PASSWORD ||                                    \
   (option) == CURLOPT_TLSAUTH_TYPE ||                                        \
   (option) == CURLOPT_TLSAUTH_USERNAME ||                                    \
   (option) == CURLOPT_UNIX_SOCKET_PATH ||                                    \
   (option) == CURLOPT_URL ||                                                 \
   (option) == CURLOPT_USERAGENT ||                                           \
   (option) == CURLOPT_USERNAME ||                                            \
   (option) == CURLOPT_USERPWD ||                                             \
   (option) == CURLOPT_XOAUTH2_BEARER ||                                      \
   0)

/* evaluates to true if option takes a curl_write_callback argument */
#define _curl_is_write_cb_option(option)                                      \
  ((option) == CURLOPT_HEADERFUNCTION ||                                      \
   (option) == CURLOPT_WRITEFUNCTION)

/* evaluates to true if option takes a curl_conv_callback argument */
#define _curl_is_conv_cb_option(option)                                       \
  ((option) == CURLOPT_CONV_TO_NETWORK_FUNCTION ||                            \
   (option) == CURLOPT_CONV_FROM_NETWORK_FUNCTION ||                          \
   (option) == CURLOPT_CONV_FROM_UTF8_FUNCTION)

/* evaluates to true if option takes a data argument to pass to a callback */
#define _curl_is_cb_data_option(option)                                       \
  ((option) == CURLOPT_CHUNK_DATA ||                                          \
   (option) == CURLOPT_CLOSESOCKETDATA ||                                     \
   (option) == CURLOPT_DEBUGDATA ||                                           \
   (option) == CURLOPT_FNMATCH_DATA ||                                        \
   (option) == CURLOPT_HEADERDATA ||                                          \
   (option) == CURLOPT_INTERLEAVEDATA ||                                      \
   (option) == CURLOPT_IOCTLDATA ||                                           \
   (option) == CURLOPT_OPENSOCKETDATA ||                                      \
   (option) == CURLOPT_PRIVATE ||                                             \
   (option) == CURLOPT_PROGRESSDATA ||                                        \
   (option) == CURLOPT_READDATA ||                                            \
   (option) == CURLOPT_SEEKDATA ||                                            \
   (option) == CURLOPT_SOCKOPTDATA ||                                         \
   (option) == CURLOPT_SSH_KEYDATA ||                                         \
   (option) == CURLOPT_SSL_CTX_DATA ||                                        \
   (option) == CURLOPT_WRITEDATA ||                                           \
   (option) == CURLOPT_RESOLVER_START_DATA ||                                 \
   0)

/* evaluates to true if option takes a POST data argument (void* or char*) */
#define _curl_is_postfields_option(option)                                    \
  ((option) == CURLOPT_POSTFIELDS ||                                          \
   (option) == CURLOPT_COPYPOSTFIELDS ||                                      \
   0)

/* evaluates to true if option takes a struct curl_slist * argument */
#define _curl_is_slist_option(option)                                         \
  ((option) == CURLOPT_HTTP200ALIASES ||                                      \
   (option) == CURLOPT_HTTPHEADER ||                                          \
   (option) == CURLOPT_MAIL_RCPT ||                                           \
   (option) == CURLOPT_POSTQUOTE ||                                           \
   (option) == CURLOPT_PREQUOTE ||                                            \
   (option) == CURLOPT_PROXYHEADER ||                                         \
   (option) == CURLOPT_QUOTE ||                                               \
   (option) == CURLOPT_RESOLVE ||                                             \
   (option) == CURLOPT_TELNETOPTIONS ||                                       \
   0)

/* groups of curl_easy_getinfo infos that take the same type of argument */

/* evaluates to true if info expects a pointer to char * argument */
#define _curl_is_string_info(info)                                            \
  (CURLINFO_STRING < (info) && (info) < CURLINFO_LONG)

/* evaluates to true if info expects a pointer to long argument */
#define _curl_is_long_info(info)                                              \
  (CURLINFO_LONG < (info) && (info) < CURLINFO_DOUBLE)

/* evaluates to true if info expects a pointer to double argument */
#define _curl_is_double_info(info)                                            \
  (CURLINFO_DOUBLE < (info) && (info) < CURLINFO_SLIST)

/* true if info expects a pointer to struct curl_slist * argument */
#define _curl_is_slist_info(info)                                       \
  (((info) == CURLINFO_SSL_ENGINES) || ((info) == CURLINFO_COOKIELIST))

/* true if info expects a pointer to struct curl_tlssessioninfo * argument */
#define _curl_is_tlssessioninfo_info(info)                              \
  (((info) == CURLINFO_TLS_SSL_PTR) || ((info) == CURLINFO_TLS_SESSION))

/* true if info expects a pointer to struct curl_certinfo * argument */
#define _curl_is_certinfo_info(info) ((info) == CURLINFO_CERTINFO)

/* true if info expects a pointer to struct curl_socket_t argument */
#define _curl_is_socket_info(info)                                            \
  (CURLINFO_SOCKET < (info) && (info) < CURLINFO_OFF_T)

/* true if info expects a pointer to curl_off_t argument */
#define _curl_is_off_t_info(info)                                             \
  (CURLINFO_OFF_T < (info))

/* typecheck helpers -- check whether given expression has requested type*/

/* For pointers, you can use the _curl_is_ptr/_curl_is_arr macros,
 * otherwise define a new macro. Search for __builtin_types_compatible_p
 * in the GCC manual.
 * NOTE: these macros MUST NOT EVALUATE their arguments! The argument is
 * the actual expression passed to the curl_easy_setopt macro. This
 * means that you can only apply the sizeof and __typeof__ operators, no
 * == or whatsoever.
 */

/* XXX: should evaluate to true if expr is a pointer */
#define _curl_is_any_ptr(expr)                                                \
  (sizeof(expr) == sizeof(void *))

/* evaluates to true if expr is NULL */
/* XXX: must not evaluate expr, so this check is not accurate */
#define _curl_is_NULL(expr)                                                   \
  (__builtin_types_compatible_p(__typeof__(expr), __typeof__(NULL)))

/* evaluates to true if expr is type*, const type* or NULL */
#define _curl_is_ptr(expr, type)                                              \
  (_curl_is_NULL(expr) ||                                                     \
   __builtin_types_compatible_p(__typeof__(expr), type *) ||                  \
   __builtin_types_compatible_p(__typeof__(expr), const type *))

/* evaluates to true if expr is one of type[], type*, NULL or const type* */
#define _curl_is_arr(expr, type)                                              \
  (_curl_is_ptr((expr), type) ||                                              \
   __builtin_types_compatible_p(__typeof__(expr), type []))

/* evaluates to true if expr is a string */
#define _curl_is_string(expr)                                                 \
  (_curl_is_arr((expr), char) ||                                              \
   _curl_is_arr((expr), signed char) ||                                       \
   _curl_is_arr((expr), unsigned char))

/* evaluates to true if expr is a long (no matter the signedness)
 * XXX: for now, int is also accepted (and therefore short and char, which
 * are promoted to int when passed to a variadic function) */
#define _curl_is_long(expr)                                                   \
  (__builtin_types_compatible_p(__typeof__(expr), long) ||                    \
   __builtin_types_compatible_p(__typeof__(expr), signed long) ||             \
   __builtin_types_compatible_p(__typeof__(expr), unsigned long) ||           \
   __builtin_types_compatible_p(__typeof__(expr), int) ||                     \
   __builtin_types_compatible_p(__typeof__(expr), signed int) ||              \
   __builtin_types_compatible_p(__typeof__(expr), unsigned int) ||            \
   __builtin_types_compatible_p(__typeof__(expr), short) ||                   \
   __builtin_types_compatible_p(__typeof__(expr), signed short) ||            \
   __builtin_types_compatible_p(__typeof__(expr), unsigned short) ||          \
   __builtin_types_compatible_p(__typeof__(expr), char) ||                    \
   __builtin_types_compatible_p(__typeof__(expr), signed char) ||             \
   __builtin_types_compatible_p(__typeof__(expr), unsigned char))

/* evaluates to true if expr is of type curl_off_t */
#define _curl_is_off_t(expr)                                                  \
  (__builtin_types_compatible_p(__typeof__(expr), curl_off_t))

/* evaluates to true if expr is abuffer suitable for CURLOPT_ERRORBUFFER */
/* XXX: also check size of an char[] array? */
#define _curl_is_error_buffer(expr)                                           \
  (_curl_is_NULL(expr) ||                                                     \
   __builtin_types_compatible_p(__typeof__(expr), char *) ||                  \
   __builtin_types_compatible_p(__typeof__(expr), char[]))

/* evaluates to true if expr is of type (const) void* or (const) FILE* */
#if 0
#define _curl_is_cb_data(expr)                                                \
  (_curl_is_ptr((expr), void) ||                                              \
   _curl_is_ptr((expr), FILE))
#else /* be less strict */
#define _curl_is_cb_data(expr)                                                \
  _curl_is_any_ptr(expr)
#endif

/* evaluates to true if expr is of type FILE* */
#define _curl_is_FILE(expr)                                             \
  (_curl_is_NULL(expr) ||                                              \
   (__builtin_types_compatible_p(__typeof__(expr), FILE *)))

/* evaluates to true if expr can be passed as POST data (void* or char*) */
#define _curl_is_postfields(expr)                                             \
  (_curl_is_ptr((expr), void) ||                                              \
   _curl_is_arr((expr), char))

/* FIXME: the whole callback checking is messy...
 * The idea is to tolerate char vs. void and const vs. not const
 * pointers in arguments at least
 */
/* helper: __builtin_types_compatible_p distinguishes between functions and
 * function pointers, hide it */
#define _curl_callback_compatible(func, type)                                 \
  (__builtin_types_compatible_p(__typeof__(func), type) ||                    \
   __builtin_types_compatible_p(__typeof__(func) *, type))

/* evaluates to true if expr is of type curl_resolver_start_callback */
#define _curl_is_resolver_start_callback(expr)       \
  (_curl_is_NULL(expr) || \
   _curl_callback_compatible((expr), curl_resolver_start_callback))

/* evaluates to true if expr is of type curl_read_callback or "similar" */
#define _curl_is_read_cb(expr)                                          \
  (_curl_is_NULL(expr) ||                                                     \
   _curl_callback_compatible((expr), __typeof__(fread) *) ||                  \
   _curl_callback_compatible((expr), curl_read_callback) ||                   \
   _curl_callback_compatible((expr), _curl_read_callback1) ||                 \
   _curl_callback_compatible((expr), _curl_read_callback2) ||                 \
   _curl_callback_compatible((expr), _curl_read_callback3) ||                 \
   _curl_callback_compatible((expr), _curl_read_callback4) ||                 \
   _curl_callback_compatible((expr), _curl_read_callback5) ||                 \
   _curl_callback_compatible((expr), _curl_read_callback6))
typedef size_t (*_curl_read_callback1)(char *, size_t, size_t, void *);
typedef size_t (*_curl_read_callback2)(char *, size_t, size_t, const void *);
typedef size_t (*_curl_read_callback3)(char *, size_t, size_t, FILE *);
typedef size_t (*_curl_read_callback4)(void *, size_t, size_t, void *);
typedef size_t (*_curl_read_callback5)(void *, size_t, size_t, const void *);
typedef size_t (*_curl_read_callback6)(void *, size_t, size_t, FILE *);

/* evaluates to true if expr is of type curl_write_callback or "similar" */
#define _curl_is_write_cb(expr)                                               \
  (_curl_is_read_cb(expr) ||                                            \
   _curl_callback_compatible((expr), __typeof__(fwrite) *) ||                 \
   _curl_callback_compatible((expr), curl_write_callback) ||                  \
   _curl_callback_compatible((expr), _curl_write_callback1) ||                \
   _curl_callback_compatible((expr), _curl_write_callback2) ||                \
   _curl_callback_compatible((expr), _curl_write_callback3) ||                \
   _curl_callback_compatible((expr), _curl_write_callback4) ||                \
   _curl_callback_compatible((expr), _curl_write_callback5) ||                \
   _curl_callback_compatible((expr), _curl_write_callback6))
typedef size_t (*_curl_write_callback1)(const char *, size_t, size_t, void *);
typedef size_t (*_curl_write_callback2)(const char *, size_t, size_t,
                                       const void *);
typedef size_t (*_curl_write_callback3)(const char *, size_t, size_t, FILE *);
typedef size_t (*_curl_write_callback4)(const void *, size_t, size_t, void *);
typedef size_t (*_curl_write_callback5)(const void *, size_t, size_t,
                                       const void *);
typedef size_t (*_curl_write_callback6)(const void *, size_t, size_t, FILE *);

/* evaluates to true if expr is of type curl_ioctl_callback or "similar" */
#define _curl_is_ioctl_cb(expr)                                         \
  (_curl_is_NULL(expr) ||                                                     \
   _curl_callback_compatible((expr), curl_ioctl_callback) ||                  \
   _curl_callback_compatible((expr), _curl_ioctl_callback1) ||                \
   _curl_callback_compatible((expr), _curl_ioctl_callback2) ||                \
   _curl_callback_compatible((expr), _curl_ioctl_callback3) ||                \
   _curl_callback_compatible((expr), _curl_ioctl_callback4))
typedef curlioerr (*_curl_ioctl_callback1)(CURL *, int, void *);
typedef curlioerr (*_curl_ioctl_callback2)(CURL *, int, const void *);
typedef curlioerr (*_curl_ioctl_callback3)(CURL *, curliocmd, void *);
typedef curlioerr (*_curl_ioctl_callback4)(CURL *, curliocmd, const void *);

/* evaluates to true if expr is of type curl_sockopt_callback or "similar" */
#define _curl_is_sockopt_cb(expr)                                       \
  (_curl_is_NULL(expr) ||                                                     \
   _curl_callback_compatible((expr), curl_sockopt_callback) ||                \
   _curl_callback_compatible((expr), _curl_sockopt_callback1) ||              \
   _curl_callback_compatible((expr), _curl_sockopt_callback2))
typedef int (*_curl_sockopt_callback1)(void *, curl_socket_t, curlsocktype);
typedef int (*_curl_sockopt_callback2)(const void *, curl_socket_t,
                                      curlsocktype);

/* evaluates to true if expr is of type curl_opensocket_callback or
   "similar" */
#define _curl_is_opensocket_cb(expr)                                    \
  (_curl_is_NULL(expr) ||                                                     \
   _curl_callback_compatible((expr), curl_opensocket_callback) ||             \
   _curl_callback_compatible((expr), _curl_opensocket_callback1) ||           \
   _curl_callback_compatible((expr), _curl_opensocket_callback2) ||           \
   _curl_callback_compatible((expr), _curl_opensocket_callback3) ||           \
   _curl_callback_compatible((expr), _curl_opensocket_callback4))
typedef curl_socket_t (*_curl_opensocket_callback1)
  (void *, curlsocktype, struct curl_sockaddr *);
typedef curl_socket_t (*_curl_opensocket_callback2)
  (void *, curlsocktype, const struct curl_sockaddr *);
typedef curl_socket_t (*_curl_opensocket_callback3)
  (const void *, curlsocktype, struct curl_sockaddr *);
typedef curl_socket_t (*_curl_opensocket_callback4)
  (const void *, curlsocktype, const struct curl_sockaddr *);

/* evaluates to true if expr is of type curl_progress_callback or "similar" */
#define _curl_is_progress_cb(expr)                                      \
  (_curl_is_NULL(expr) ||                                                     \
   _curl_callback_compatible((expr), curl_progress_callback) ||               \
   _curl_callback_compatible((expr), _curl_progress_callback1) ||             \
   _curl_callback_compatible((expr), _curl_progress_callback2))
typedef int (*_curl_progress_callback1)(void *,
    double, double, double, double);
typedef int (*_curl_progress_callback2)(const void *,
    double, double, double, double);

/* evaluates to true if expr is of type curl_debug_callback or "similar" */
#define _curl_is_debug_cb(expr)                                         \
  (_curl_is_NULL(expr) ||                                                     \
   _curl_callback_compatible((expr), curl_debug_callback) ||                  \
   _curl_callback_compatible((expr), _curl_debug_callback1) ||                \
   _curl_callback_compatible((expr), _curl_debug_callback2) ||                \
   _curl_callback_compatible((expr), _curl_debug_callback3) ||                \
   _curl_callback_compatible((expr), _curl_debug_callback4) ||                \
   _curl_callback_compatible((expr), _curl_debug_callback5) ||                \
   _curl_callback_compatible((expr), _curl_debug_callback6) ||                \
   _curl_callback_compatible((expr), _curl_debug_callback7) ||                \
   _curl_callback_compatible((expr), _curl_debug_callback8))
typedef int (*_curl_debug_callback1) (CURL *,
    curl_infotype, char *, size_t, void *);
typedef int (*_curl_debug_callback2) (CURL *,
    curl_infotype, char *, size_t, const void *);
typedef int (*_curl_debug_callback3) (CURL *,
    curl_infotype, const char *, size_t, void *);
typedef int (*_curl_debug_callback4) (CURL *,
    curl_infotype, const char *, size_t, const void *);
typedef int (*_curl_debug_callback5) (CURL *,
    curl_infotype, unsigned char *, size_t, void *);
typedef int (*_curl_debug_callback6) (CURL *,
    curl_infotype, unsigned char *, size_t, const void *);
typedef int (*_curl_debug_callback7) (CURL *,
    curl_infotype, const unsigned char *, size_t, void *);
typedef int (*_curl_debug_callback8) (CURL *,
    curl_infotype, const unsigned char *, size_t, const void *);

/* evaluates to true if expr is of type curl_ssl_ctx_callback or "similar" */
/* this is getting even messier... */
#define _curl_is_ssl_ctx_cb(expr)                                       \
  (_curl_is_NULL(expr) ||                                                     \
   _curl_callback_compatible((expr), curl_ssl_ctx_callback) ||                \
   _curl_callback_compatible((expr), _curl_ssl_ctx_callback1) ||              \
   _curl_callback_compatible((expr), _curl_ssl_ctx_callback2) ||              \
   _curl_callback_compatible((expr), _curl_ssl_ctx_callback3) ||              \
   _curl_callback_compatible((expr), _curl_ssl_ctx_callback4) ||              \
   _curl_callback_compatible((expr), _curl_ssl_ctx_callback5) ||              \
   _curl_callback_compatible((expr), _curl_ssl_ctx_callback6) ||              \
   _curl_callback_compatible((expr), _curl_ssl_ctx_callback7) ||              \
   _curl_callback_compatible((expr), _curl_ssl_ctx_callback8))
typedef CURLcode (*_curl_ssl_ctx_callback1)(CURL *, void *, void *);
typedef CURLcode (*_curl_ssl_ctx_callback2)(CURL *, void *, const void *);
typedef CURLcode (*_curl_ssl_ctx_callback3)(CURL *, const void *, void *);
typedef CURLcode (*_curl_ssl_ctx_callback4)(CURL *, const void *,
                                            const void *);
#ifdef HEADER_SSL_H
/* hack: if we included OpenSSL's ssl.h, we know about SSL_CTX
 * this will of course break if we're included before OpenSSL headers...
 */
typedef CURLcode (*_curl_ssl_ctx_callback5)(CURL *, SSL_CTX, void *);
typedef CURLcode (*_curl_ssl_ctx_callback6)(CURL *, SSL_CTX, const void *);
typedef CURLcode (*_curl_ssl_ctx_callback7)(CURL *, const SSL_CTX, void *);
typedef CURLcode (*_curl_ssl_ctx_callback8)(CURL *, const SSL_CTX,
                                           const void *);
#else
typedef _curl_ssl_ctx_callback1 _curl_ssl_ctx_callback5;
typedef _curl_ssl_ctx_callback1 _curl_ssl_ctx_callback6;
typedef _curl_ssl_ctx_callback1 _curl_ssl_ctx_callback7;
typedef _curl_ssl_ctx_callback1 _curl_ssl_ctx_callback8;
#endif

/* evaluates to true if expr is of type curl_conv_callback or "similar" */
#define _curl_is_conv_cb(expr)                                          \
  (_curl_is_NULL(expr) ||                                                     \
   _curl_callback_compatible((expr), curl_conv_callback) ||                   \
   _curl_callback_compatible((expr), _curl_conv_callback1) ||                 \
   _curl_callback_compatible((expr), _curl_conv_callback2) ||                 \
   _curl_callback_compatible((expr), _curl_conv_callback3) ||                 \
   _curl_callback_compatible((expr), _curl_conv_callback4))
typedef CURLcode (*_curl_conv_callback1)(char *, size_t length);
typedef CURLcode (*_curl_conv_callback2)(const char *, size_t length);
typedef CURLcode (*_curl_conv_callback3)(void *, size_t length);
typedef CURLcode (*_curl_conv_callback4)(const void *, size_t length);

/* evaluates to true if expr is of type curl_seek_callback or "similar" */
#define _curl_is_seek_cb(expr)                                          \
  (_curl_is_NULL(expr) ||                                                     \
   _curl_callback_compatible((expr), curl_seek_callback) ||                   \
   _curl_callback_compatible((expr), _curl_seek_callback1) ||                 \
   _curl_callback_compatible((expr), _curl_seek_callback2))
typedef CURLcode (*_curl_seek_callback1)(void *, curl_off_t, int);
typedef CURLcode (*_curl_seek_callback2)(const void *, curl_off_t, int);

#endif /* __CURL_TYPECHECK_GCC_H */

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