| #ifndef CURLINC_TYPECHECK_GCC_H |
| #define CURLINC_TYPECHECK_GCC_H |
| /*************************************************************************** |
| * _ _ ____ _ |
| * Project ___| | | | _ \| | |
| * / __| | | | |_) | | |
| * | (__| |_| | _ <| |___ |
| * \___|\___/|_| \_\_____| |
| * |
| * Copyright (C) 1998 - 2020, 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(curlcheck_sometype_option(_curl_opt)) |
| * if(!curlcheck_sometype(value)) |
| * _curl_easy_setopt_err_sometype(); |
| * block and define curlcheck_sometype_option, curlcheck_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(curlcheck_long_option(_curl_opt)) \ |
| if(!curlcheck_long(value)) \ |
| _curl_easy_setopt_err_long(); \ |
| if(curlcheck_off_t_option(_curl_opt)) \ |
| if(!curlcheck_off_t(value)) \ |
| _curl_easy_setopt_err_curl_off_t(); \ |
| if(curlcheck_string_option(_curl_opt)) \ |
| if(!curlcheck_string(value)) \ |
| _curl_easy_setopt_err_string(); \ |
| if(curlcheck_write_cb_option(_curl_opt)) \ |
| if(!curlcheck_write_cb(value)) \ |
| _curl_easy_setopt_err_write_callback(); \ |
| if((_curl_opt) == CURLOPT_RESOLVER_START_FUNCTION) \ |
| if(!curlcheck_resolver_start_callback(value)) \ |
| _curl_easy_setopt_err_resolver_start_callback(); \ |
| if((_curl_opt) == CURLOPT_READFUNCTION) \ |
| if(!curlcheck_read_cb(value)) \ |
| _curl_easy_setopt_err_read_cb(); \ |
| if((_curl_opt) == CURLOPT_IOCTLFUNCTION) \ |
| if(!curlcheck_ioctl_cb(value)) \ |
| _curl_easy_setopt_err_ioctl_cb(); \ |
| if((_curl_opt) == CURLOPT_SOCKOPTFUNCTION) \ |
| if(!curlcheck_sockopt_cb(value)) \ |
| _curl_easy_setopt_err_sockopt_cb(); \ |
| if((_curl_opt) == CURLOPT_OPENSOCKETFUNCTION) \ |
| if(!curlcheck_opensocket_cb(value)) \ |
| _curl_easy_setopt_err_opensocket_cb(); \ |
| if((_curl_opt) == CURLOPT_PROGRESSFUNCTION) \ |
| if(!curlcheck_progress_cb(value)) \ |
| _curl_easy_setopt_err_progress_cb(); \ |
| if((_curl_opt) == CURLOPT_DEBUGFUNCTION) \ |
| if(!curlcheck_debug_cb(value)) \ |
| _curl_easy_setopt_err_debug_cb(); \ |
| if((_curl_opt) == CURLOPT_SSL_CTX_FUNCTION) \ |
| if(!curlcheck_ssl_ctx_cb(value)) \ |
| _curl_easy_setopt_err_ssl_ctx_cb(); \ |
| if(curlcheck_conv_cb_option(_curl_opt)) \ |
| if(!curlcheck_conv_cb(value)) \ |
| _curl_easy_setopt_err_conv_cb(); \ |
| if((_curl_opt) == CURLOPT_SEEKFUNCTION) \ |
| if(!curlcheck_seek_cb(value)) \ |
| _curl_easy_setopt_err_seek_cb(); \ |
| if(curlcheck_cb_data_option(_curl_opt)) \ |
| if(!curlcheck_cb_data(value)) \ |
| _curl_easy_setopt_err_cb_data(); \ |
| if((_curl_opt) == CURLOPT_ERRORBUFFER) \ |
| if(!curlcheck_error_buffer(value)) \ |
| _curl_easy_setopt_err_error_buffer(); \ |
| if((_curl_opt) == CURLOPT_STDERR) \ |
| if(!curlcheck_FILE(value)) \ |
| _curl_easy_setopt_err_FILE(); \ |
| if(curlcheck_postfields_option(_curl_opt)) \ |
| if(!curlcheck_postfields(value)) \ |
| _curl_easy_setopt_err_postfields(); \ |
| if((_curl_opt) == CURLOPT_HTTPPOST) \ |
| if(!curlcheck_arr((value), struct curl_httppost)) \ |
| _curl_easy_setopt_err_curl_httpost(); \ |
| if((_curl_opt) == CURLOPT_MIMEPOST) \ |
| if(!curlcheck_ptr((value), curl_mime)) \ |
| _curl_easy_setopt_err_curl_mimepost(); \ |
| if(curlcheck_slist_option(_curl_opt)) \ |
| if(!curlcheck_arr((value), struct curl_slist)) \ |
| _curl_easy_setopt_err_curl_slist(); \ |
| if((_curl_opt) == CURLOPT_SHARE) \ |
| if(!curlcheck_ptr((value), CURLSH)) \ |
| _curl_easy_setopt_err_CURLSH(); \ |
| } \ |
| curl_easy_setopt(handle, _curl_opt, value); \ |
| }) |
| |
| /* wraps curl_easy_getinfo() with typechecking */ |
| #define curl_easy_getinfo(handle, info, arg) \ |
| __extension__({ \ |
| __typeof__(info) _curl_info = info; \ |
| if(__builtin_constant_p(_curl_info)) { \ |
| if(curlcheck_string_info(_curl_info)) \ |
| if(!curlcheck_arr((arg), char *)) \ |
| _curl_easy_getinfo_err_string(); \ |
| if(curlcheck_long_info(_curl_info)) \ |
| if(!curlcheck_arr((arg), long)) \ |
| _curl_easy_getinfo_err_long(); \ |
| if(curlcheck_double_info(_curl_info)) \ |
| if(!curlcheck_arr((arg), double)) \ |
| _curl_easy_getinfo_err_double(); \ |
| if(curlcheck_slist_info(_curl_info)) \ |
| if(!curlcheck_arr((arg), struct curl_slist *)) \ |
| _curl_easy_getinfo_err_curl_slist(); \ |
| if(curlcheck_tlssessioninfo_info(_curl_info)) \ |
| if(!curlcheck_arr((arg), struct curl_tlssessioninfo *)) \ |
| _curl_easy_getinfo_err_curl_tlssesssioninfo(); \ |
| if(curlcheck_certinfo_info(_curl_info)) \ |
| if(!curlcheck_arr((arg), struct curl_certinfo *)) \ |
| _curl_easy_getinfo_err_curl_certinfo(); \ |
| if(curlcheck_socket_info(_curl_info)) \ |
| if(!curlcheck_arr((arg), curl_socket_t)) \ |
| _curl_easy_getinfo_err_curl_socket(); \ |
| if(curlcheck_off_t_info(_curl_info)) \ |
| if(!curlcheck_arr((arg), curl_off_t)) \ |
| _curl_easy_getinfo_err_curl_off_t(); \ |
| } \ |
| curl_easy_getinfo(handle, _curl_info, arg); \ |
| }) |
| |
| /* |
| * 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 CURLWARNING(id, message) \ |
| static void __attribute__((__warning__(message))) \ |
| __attribute__((__unused__)) __attribute__((__noinline__)) \ |
| id(void) { __asm__(""); } |
| |
| CURLWARNING(_curl_easy_setopt_err_long, |
| "curl_easy_setopt expects a long argument for this option") |
| CURLWARNING(_curl_easy_setopt_err_curl_off_t, |
| "curl_easy_setopt expects a curl_off_t argument for this option") |
| CURLWARNING(_curl_easy_setopt_err_string, |
| "curl_easy_setopt expects a " |
| "string ('char *' or char[]) argument for this option" |
| ) |
| CURLWARNING(_curl_easy_setopt_err_write_callback, |
| "curl_easy_setopt expects a curl_write_callback argument for this option") |
| CURLWARNING(_curl_easy_setopt_err_resolver_start_callback, |
| "curl_easy_setopt expects a " |
| "curl_resolver_start_callback argument for this option" |
| ) |
| CURLWARNING(_curl_easy_setopt_err_read_cb, |
| "curl_easy_setopt expects a curl_read_callback argument for this option") |
| CURLWARNING(_curl_easy_setopt_err_ioctl_cb, |
| "curl_easy_setopt expects a curl_ioctl_callback argument for this option") |
| CURLWARNING(_curl_easy_setopt_err_sockopt_cb, |
| "curl_easy_setopt expects a curl_sockopt_callback argument for this option") |
| CURLWARNING(_curl_easy_setopt_err_opensocket_cb, |
| "curl_easy_setopt expects a " |
| "curl_opensocket_callback argument for this option" |
| ) |
| CURLWARNING(_curl_easy_setopt_err_progress_cb, |
| "curl_easy_setopt expects a curl_progress_callback argument for this option") |
| CURLWARNING(_curl_easy_setopt_err_debug_cb, |
| "curl_easy_setopt expects a curl_debug_callback argument for this option") |
| CURLWARNING(_curl_easy_setopt_err_ssl_ctx_cb, |
| "curl_easy_setopt expects a curl_ssl_ctx_callback argument for this option") |
| CURLWARNING(_curl_easy_setopt_err_conv_cb, |
| "curl_easy_setopt expects a curl_conv_callback argument for this option") |
| CURLWARNING(_curl_easy_setopt_err_seek_cb, |
| "curl_easy_setopt expects a curl_seek_callback argument for this option") |
| CURLWARNING(_curl_easy_setopt_err_cb_data, |
| "curl_easy_setopt expects a " |
| "private data pointer as argument for this option") |
| CURLWARNING(_curl_easy_setopt_err_error_buffer, |
| "curl_easy_setopt expects a " |
| "char buffer of CURL_ERROR_SIZE as argument for this option") |
| CURLWARNING(_curl_easy_setopt_err_FILE, |
| "curl_easy_setopt expects a 'FILE *' argument for this option") |
| CURLWARNING(_curl_easy_setopt_err_postfields, |
| "curl_easy_setopt expects a 'void *' or 'char *' argument for this option") |
| CURLWARNING(_curl_easy_setopt_err_curl_httpost, |
| "curl_easy_setopt expects a 'struct curl_httppost *' " |
| "argument for this option") |
| CURLWARNING(_curl_easy_setopt_err_curl_mimepost, |
| "curl_easy_setopt expects a 'curl_mime *' " |
| "argument for this option") |
| CURLWARNING(_curl_easy_setopt_err_curl_slist, |
| "curl_easy_setopt expects a 'struct curl_slist *' argument for this option") |
| CURLWARNING(_curl_easy_setopt_err_CURLSH, |
| "curl_easy_setopt expects a CURLSH* argument for this option") |
| |
| CURLWARNING(_curl_easy_getinfo_err_string, |
| "curl_easy_getinfo expects a pointer to 'char *' for this info") |
| CURLWARNING(_curl_easy_getinfo_err_long, |
| "curl_easy_getinfo expects a pointer to long for this info") |
| CURLWARNING(_curl_easy_getinfo_err_double, |
| "curl_easy_getinfo expects a pointer to double for this info") |
| CURLWARNING(_curl_easy_getinfo_err_curl_slist, |
| "curl_easy_getinfo expects a pointer to 'struct curl_slist *' for this info") |
| CURLWARNING(_curl_easy_getinfo_err_curl_tlssesssioninfo, |
| "curl_easy_getinfo expects a pointer to " |
| "'struct curl_tlssessioninfo *' for this info") |
| CURLWARNING(_curl_easy_getinfo_err_curl_certinfo, |
| "curl_easy_getinfo expects a pointer to " |
| "'struct curl_certinfo *' for this info") |
| CURLWARNING(_curl_easy_getinfo_err_curl_socket, |
| "curl_easy_getinfo expects a pointer to curl_socket_t for this info") |
| CURLWARNING(_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 curlcheck_long_option(option) \ |
| (0 < (option) && (option) < CURLOPTTYPE_OBJECTPOINT) |
| |
| #define curlcheck_off_t_option(option) \ |
| (((option) > CURLOPTTYPE_OFF_T) && ((option) < CURLOPTTYPE_BLOB)) |
| |
| /* evaluates to true if option takes a char* argument */ |
| #define curlcheck_string_option(option) \ |
| ((option) == CURLOPT_ABSTRACT_UNIX_SOCKET || \ |
| (option) == CURLOPT_ACCEPT_ENCODING || \ |
| (option) == CURLOPT_ALTSVC || \ |
| (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_DOH_URL || \ |
| (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_ISSUERCERT || \ |
| (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_TLS13_CIPHERS || \ |
| (option) == CURLOPT_PROXY_TLSAUTH_PASSWORD || \ |
| (option) == CURLOPT_PROXY_TLSAUTH_TYPE || \ |
| (option) == CURLOPT_PROXY_TLSAUTH_USERNAME || \ |
| (option) == CURLOPT_RANDOM_FILE || \ |
| (option) == CURLOPT_RANGE || \ |
| (option) == CURLOPT_REFERER || \ |
| (option) == CURLOPT_REQUEST_TARGET || \ |
| (option) == CURLOPT_RTSP_SESSION_ID || \ |
| (option) == CURLOPT_RTSP_STREAM_URI || \ |
| (option) == CURLOPT_RTSP_TRANSPORT || \ |
| (option) == CURLOPT_SASL_AUTHZID || \ |
| (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_TLS13_CIPHERS || \ |
| (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 || \ |
| (option) == CURLOPT_SSL_EC_CURVES || \ |
| 0) |
| |
| /* evaluates to true if option takes a curl_write_callback argument */ |
| #define curlcheck_write_cb_option(option) \ |
| ((option) == CURLOPT_HEADERFUNCTION || \ |
| (option) == CURLOPT_WRITEFUNCTION) |
| |
| /* evaluates to true if option takes a curl_conv_callback argument */ |
| #define curlcheck_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 curlcheck_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_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 || \ |
| (option) == CURLOPT_TRAILERDATA || \ |
| 0) |
| |
| /* evaluates to true if option takes a POST data argument (void* or char*) */ |
| #define curlcheck_postfields_option(option) \ |
| ((option) == CURLOPT_POSTFIELDS || \ |
| (option) == CURLOPT_COPYPOSTFIELDS || \ |
| 0) |
| |
| /* evaluates to true if option takes a struct curl_slist * argument */ |
| #define curlcheck_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 || \ |
| (option) == CURLOPT_CONNECT_TO || \ |
| 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 curlcheck_string_info(info) \ |
| (CURLINFO_STRING < (info) && (info) < CURLINFO_LONG && \ |
| (info) != CURLINFO_PRIVATE) |
| |
| /* evaluates to true if info expects a pointer to long argument */ |
| #define curlcheck_long_info(info) \ |
| (CURLINFO_LONG < (info) && (info) < CURLINFO_DOUBLE) |
| |
| /* evaluates to true if info expects a pointer to double argument */ |
| #define curlcheck_double_info(info) \ |
| (CURLINFO_DOUBLE < (info) && (info) < CURLINFO_SLIST) |
| |
| /* true if info expects a pointer to struct curl_slist * argument */ |
| #define curlcheck_slist_info(info) \ |
| (((info) == CURLINFO_SSL_ENGINES) || ((info) == CURLINFO_COOKIELIST)) |
| |
| /* true if info expects a pointer to struct curl_tlssessioninfo * argument */ |
| #define curlcheck_tlssessioninfo_info(info) \ |
| (((info) == CURLINFO_TLS_SSL_PTR) || ((info) == CURLINFO_TLS_SESSION)) |
| |
| /* true if info expects a pointer to struct curl_certinfo * argument */ |
| #define curlcheck_certinfo_info(info) ((info) == CURLINFO_CERTINFO) |
| |
| /* true if info expects a pointer to struct curl_socket_t argument */ |
| #define curlcheck_socket_info(info) \ |
| (CURLINFO_SOCKET < (info) && (info) < CURLINFO_OFF_T) |
| |
| /* true if info expects a pointer to curl_off_t argument */ |
| #define curlcheck_off_t_info(info) \ |
| (CURLINFO_OFF_T < (info)) |
| |
| |
| /* typecheck helpers -- check whether given expression has requested type*/ |
| |
| /* For pointers, you can use the curlcheck_ptr/curlcheck_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 curlcheck_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 curlcheck_NULL(expr) \ |
| (__builtin_types_compatible_p(__typeof__(expr), __typeof__(NULL))) |
| |
| /* evaluates to true if expr is type*, const type* or NULL */ |
| #define curlcheck_ptr(expr, type) \ |
| (curlcheck_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 curlcheck_arr(expr, type) \ |
| (curlcheck_ptr((expr), type) || \ |
| __builtin_types_compatible_p(__typeof__(expr), type [])) |
| |
| /* evaluates to true if expr is a string */ |
| #define curlcheck_string(expr) \ |
| (curlcheck_arr((expr), char) || \ |
| curlcheck_arr((expr), signed char) || \ |
| curlcheck_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 curlcheck_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 curlcheck_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 curlcheck_error_buffer(expr) \ |
| (curlcheck_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 curlcheck_cb_data(expr) \ |
| (curlcheck_ptr((expr), void) || \ |
| curlcheck_ptr((expr), FILE)) |
| #else /* be less strict */ |
| #define curlcheck_cb_data(expr) \ |
| curlcheck_any_ptr(expr) |
| #endif |
| |
| /* evaluates to true if expr is of type FILE* */ |
| #define curlcheck_FILE(expr) \ |
| (curlcheck_NULL(expr) || \ |
| (__builtin_types_compatible_p(__typeof__(expr), FILE *))) |
| |
| /* evaluates to true if expr can be passed as POST data (void* or char*) */ |
| #define curlcheck_postfields(expr) \ |
| (curlcheck_ptr((expr), void) || \ |
| curlcheck_arr((expr), char) || \ |
| curlcheck_arr((expr), unsigned char)) |
| |
| /* helper: __builtin_types_compatible_p distinguishes between functions and |
| * function pointers, hide it */ |
| #define curlcheck_cb_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 curlcheck_resolver_start_callback(expr) \ |
| (curlcheck_NULL(expr) || \ |
| curlcheck_cb_compatible((expr), curl_resolver_start_callback)) |
| |
| /* evaluates to true if expr is of type curl_read_callback or "similar" */ |
| #define curlcheck_read_cb(expr) \ |
| (curlcheck_NULL(expr) || \ |
| curlcheck_cb_compatible((expr), __typeof__(fread) *) || \ |
| curlcheck_cb_compatible((expr), curl_read_callback) || \ |
| curlcheck_cb_compatible((expr), _curl_read_callback1) || \ |
| curlcheck_cb_compatible((expr), _curl_read_callback2) || \ |
| curlcheck_cb_compatible((expr), _curl_read_callback3) || \ |
| curlcheck_cb_compatible((expr), _curl_read_callback4) || \ |
| curlcheck_cb_compatible((expr), _curl_read_callback5) || \ |
| curlcheck_cb_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 curlcheck_write_cb(expr) \ |
| (curlcheck_read_cb(expr) || \ |
| curlcheck_cb_compatible((expr), __typeof__(fwrite) *) || \ |
| curlcheck_cb_compatible((expr), curl_write_callback) || \ |
| curlcheck_cb_compatible((expr), _curl_write_callback1) || \ |
| curlcheck_cb_compatible((expr), _curl_write_callback2) || \ |
| curlcheck_cb_compatible((expr), _curl_write_callback3) || \ |
| curlcheck_cb_compatible((expr), _curl_write_callback4) || \ |
| curlcheck_cb_compatible((expr), _curl_write_callback5) || \ |
| curlcheck_cb_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 curlcheck_ioctl_cb(expr) \ |
| (curlcheck_NULL(expr) || \ |
| curlcheck_cb_compatible((expr), curl_ioctl_callback) || \ |
| curlcheck_cb_compatible((expr), _curl_ioctl_callback1) || \ |
| curlcheck_cb_compatible((expr), _curl_ioctl_callback2) || \ |
| curlcheck_cb_compatible((expr), _curl_ioctl_callback3) || \ |
| curlcheck_cb_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 curlcheck_sockopt_cb(expr) \ |
| (curlcheck_NULL(expr) || \ |
| curlcheck_cb_compatible((expr), curl_sockopt_callback) || \ |
| curlcheck_cb_compatible((expr), _curl_sockopt_callback1) || \ |
| curlcheck_cb_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 curlcheck_opensocket_cb(expr) \ |
| (curlcheck_NULL(expr) || \ |
| curlcheck_cb_compatible((expr), curl_opensocket_callback) || \ |
| curlcheck_cb_compatible((expr), _curl_opensocket_callback1) || \ |
| curlcheck_cb_compatible((expr), _curl_opensocket_callback2) || \ |
| curlcheck_cb_compatible((expr), _curl_opensocket_callback3) || \ |
| curlcheck_cb_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 curlcheck_progress_cb(expr) \ |
| (curlcheck_NULL(expr) || \ |
| curlcheck_cb_compatible((expr), curl_progress_callback) || \ |
| curlcheck_cb_compatible((expr), _curl_progress_callback1) || \ |
| curlcheck_cb_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 curlcheck_debug_cb(expr) \ |
| (curlcheck_NULL(expr) || \ |
| curlcheck_cb_compatible((expr), curl_debug_callback) || \ |
| curlcheck_cb_compatible((expr), _curl_debug_callback1) || \ |
| curlcheck_cb_compatible((expr), _curl_debug_callback2) || \ |
| curlcheck_cb_compatible((expr), _curl_debug_callback3) || \ |
| curlcheck_cb_compatible((expr), _curl_debug_callback4) || \ |
| curlcheck_cb_compatible((expr), _curl_debug_callback5) || \ |
| curlcheck_cb_compatible((expr), _curl_debug_callback6) || \ |
| curlcheck_cb_compatible((expr), _curl_debug_callback7) || \ |
| curlcheck_cb_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 curlcheck_ssl_ctx_cb(expr) \ |
| (curlcheck_NULL(expr) || \ |
| curlcheck_cb_compatible((expr), curl_ssl_ctx_callback) || \ |
| curlcheck_cb_compatible((expr), _curl_ssl_ctx_callback1) || \ |
| curlcheck_cb_compatible((expr), _curl_ssl_ctx_callback2) || \ |
| curlcheck_cb_compatible((expr), _curl_ssl_ctx_callback3) || \ |
| curlcheck_cb_compatible((expr), _curl_ssl_ctx_callback4) || \ |
| curlcheck_cb_compatible((expr), _curl_ssl_ctx_callback5) || \ |
| curlcheck_cb_compatible((expr), _curl_ssl_ctx_callback6) || \ |
| curlcheck_cb_compatible((expr), _curl_ssl_ctx_callback7) || \ |
| curlcheck_cb_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 curlcheck_conv_cb(expr) \ |
| (curlcheck_NULL(expr) || \ |
| curlcheck_cb_compatible((expr), curl_conv_callback) || \ |
| curlcheck_cb_compatible((expr), _curl_conv_callback1) || \ |
| curlcheck_cb_compatible((expr), _curl_conv_callback2) || \ |
| curlcheck_cb_compatible((expr), _curl_conv_callback3) || \ |
| curlcheck_cb_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 curlcheck_seek_cb(expr) \ |
| (curlcheck_NULL(expr) || \ |
| curlcheck_cb_compatible((expr), curl_seek_callback) || \ |
| curlcheck_cb_compatible((expr), _curl_seek_callback1) || \ |
| curlcheck_cb_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 /* CURLINC_TYPECHECK_GCC_H */ |
