curl/lib/system_win32.h
Pavel P 0caadc1f24
asyn-thread: avoid using GetAddrInfoExW with impersonation
Multiple reports suggest that GetAddrInfoExW fails when impersonation is
used. This PR checks if thread is impersonating and avoids using
GetAddrInfoExW api.

Reported-by: Keerthi Timmaraju
Assisted-by: edmcln on github
Fixes #13612
Closes #13738
2024-05-23 23:56:58 +02:00

80 lines
2.8 KiB
C

#ifndef HEADER_CURL_SYSTEM_WIN32_H
#define HEADER_CURL_SYSTEM_WIN32_H
/***************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) Steve Holme, <steve_holme@hotmail.com>.
*
* 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.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.
*
* SPDX-License-Identifier: curl
*
***************************************************************************/
#include "curl_setup.h"
#ifdef _WIN32
extern LARGE_INTEGER Curl_freq;
extern bool Curl_isVistaOrGreater;
extern bool Curl_isWindows8OrGreater;
CURLcode Curl_win32_init(long flags);
void Curl_win32_cleanup(long init_flags);
/* We use our own typedef here since some headers might lack this */
typedef unsigned int(WINAPI *IF_NAMETOINDEX_FN)(const char *);
/* This is used instead of if_nametoindex if available on Windows */
extern IF_NAMETOINDEX_FN Curl_if_nametoindex;
/* Identical copy of addrinfoexW/ADDRINFOEXW */
typedef struct addrinfoexW_
{
int ai_flags;
int ai_family;
int ai_socktype;
int ai_protocol;
size_t ai_addrlen;
PWSTR ai_canonname;
struct sockaddr *ai_addr;
void *ai_blob;
size_t ai_bloblen;
LPGUID ai_provider;
struct addrinfoexW_ *ai_next;
} ADDRINFOEXW_;
typedef void (CALLBACK *LOOKUP_COMPLETION_FN)(DWORD, DWORD, LPWSAOVERLAPPED);
typedef void (WSAAPI *FREEADDRINFOEXW_FN)(ADDRINFOEXW_*);
typedef int (WSAAPI *GETADDRINFOEXCANCEL_FN)(LPHANDLE);
typedef int (WSAAPI *GETADDRINFOEXW_FN)(PCWSTR, PCWSTR, DWORD, LPGUID,
const ADDRINFOEXW_*, ADDRINFOEXW_**, struct timeval*, LPOVERLAPPED,
LOOKUP_COMPLETION_FN, LPHANDLE);
extern FREEADDRINFOEXW_FN Curl_FreeAddrInfoExW;
extern GETADDRINFOEXCANCEL_FN Curl_GetAddrInfoExCancel;
extern GETADDRINFOEXW_FN Curl_GetAddrInfoExW;
bool Curl_win32_impersonating(void);
/* This is used to dynamically load DLLs */
HMODULE Curl_load_library(LPCTSTR filename);
#else /* _WIN32 */
#define Curl_win32_init(x) CURLE_OK
#endif /* !_WIN32 */
#endif /* HEADER_CURL_SYSTEM_WIN32_H */