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/* extcap_base.c
* Base function for extcaps
*
* Copyright 2015, Dario Lombardo
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "extcap-base.h"
#ifdef _WIN32
BOOLEAN IsHandleRedirected(DWORD handle)
{
HANDLE h = GetStdHandle(handle);
if (h) {
BY_HANDLE_FILE_INFORMATION fi;
if (GetFileInformationByHandle(h, &fi)) {
return TRUE;
}
}
return FALSE;
}
void attach_parent_console()
{
BOOL outRedirected, errRedirected;
outRedirected = IsHandleRedirected(STD_OUTPUT_HANDLE);
errRedirected = IsHandleRedirected(STD_ERROR_HANDLE);
if (outRedirected && errRedirected) {
/* Both standard output and error handles are redirected.
* There is no point in attaching to parent process console.
*/
return;
}
if (AttachConsole(ATTACH_PARENT_PROCESS) == 0) {
/* Console attach failed. */
return;
}
/* Console attach succeeded */
if (outRedirected == FALSE) {
if (!freopen("CONOUT$", "w", stdout)) {
errmsg_print("WARNING: Cannot redirect to stdout.");
}
}
if (errRedirected == FALSE) {
if (!freopen("CONOUT$", "w", stderr)) {
errmsg_print("WARNING: Cannot redirect to strerr.");
}
}
}
#endif
/*
* Editor modelines - https://www.wireshark.org/tools/modelines.html
*
* Local variables:
* c-basic-offset: 4
* tab-width: 4
* indent-tabs-mode: t
* End:
*
* vi: set shiftwidth=4 tabstop=4 noexpandtab:
* :indentSize=4:tabSize=4:noTabs=false:
*/
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