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