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/* gpgcempr.c - Manager for GPG CE devices
Copyright (C) 2010 Free Software Foundation, Inc.
This file is part of Assuan.
Assuan is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 3 of
the License, or (at your option) any later version.
Assuan 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#define _WIN32_WCE 0x0500
#include <stdio.h>
#include <windows.h>
#define PGM "gpgcemgr"
#define GPGCEDEV_KEY_NAME L"Drivers\\GnuPG_Device"
#define GPGCEDEV_DLL_NAME L"gpgcedev.dll"
#define GPGCEDEV_PREFIX L"GPG"
static int
install (void)
{
HKEY handle;
DWORD disp, dw;
if (RegCreateKeyEx (HKEY_LOCAL_MACHINE, GPGCEDEV_KEY_NAME, 0, NULL, 0,
KEY_WRITE, NULL, &handle, &disp))
{
fprintf (stderr, PGM": error creating registry key: rc=%d\n",
(int)GetLastError ());
return 1;
}
RegSetValueEx (handle, L"dll", 0, REG_SZ,
(void*)GPGCEDEV_DLL_NAME, sizeof (GPGCEDEV_DLL_NAME));
RegSetValueEx (handle, L"prefix", 0, REG_SZ,
(void*)GPGCEDEV_PREFIX, sizeof (GPGCEDEV_PREFIX));
dw = 1;
RegSetValueEx (handle, L"Index", 0, REG_DWORD, (void*)&dw, sizeof dw);
RegCloseKey (handle);
fprintf (stderr, PGM": registry key created\n");
return 0;
}
static int
deinstall (void)
{
int result = 0;
HANDLE shd;
DEVMGR_DEVICE_INFORMATION dinfo;
memset (&dinfo, 0, sizeof dinfo);
dinfo.dwSize = sizeof dinfo;
shd = FindFirstDevice (DeviceSearchByLegacyName, L"GPG1:", &dinfo);
if (shd == INVALID_HANDLE_VALUE)
{
if (GetLastError () == 18)
fprintf (stderr, PGM": device not found\n");
else
{
fprintf (stderr, PGM": FindFirstDevice failed: rc=%d\n",
(int)GetLastError ());
result = 1;
}
}
else
{
fprintf (stderr, PGM": ActivateDevice handle is %p\n", dinfo.hDevice);
if (dinfo.hDevice && dinfo.hDevice != INVALID_HANDLE_VALUE)
{
if (!DeactivateDevice (dinfo.hDevice))
{
fprintf (stderr, PGM": DeactivateDevice failed: rc=%d\n",
(int)GetLastError ());
result = 1;
}
else
fprintf (stderr, PGM": DeactivateDevice succeeded\n");
}
FindClose (shd);
}
return result;
}
int
main (int argc, char **argv)
{
int result = 0;
if (argc > 1 && !strcmp (argv[1], "--register"))
result = install ();
else if (argc > 1 && !strcmp (argv[1], "--deactivate"))
result = deinstall ();
else if (argc > 1 && !strcmp (argv[1], "--activate"))
{
/* This is mainly for testing. The activation is usually done
right before the device is opened. */
if (ActivateDevice (GPGCEDEV_DLL_NAME, 0) == INVALID_HANDLE_VALUE)
{
fprintf (stderr, PGM": ActivateDevice failed: rc=%d\n",
(int)GetLastError ());
result = 1;
}
else
fprintf (stderr, PGM": device activated\n");
}
else
{
fprintf (stderr, "usage: " PGM " --register|--deactivate|--activate\n");
result = 1;
}
fflush (stdout);
fflush (stderr);
Sleep (1000);
return result;
}
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