105 lines
3.3 KiB
C
105 lines
3.3 KiB
C
/* ****************************************************************************
|
|
* stream/builtin/windows/open.c -- open a Windows API stream.
|
|
* Copyright (C) 2016-2017 Thomas "Cakeisalie5" Touhey <thomas@touhey.fr>
|
|
*
|
|
* This file is part of libcasio.
|
|
* libcasio 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 3.0 of the License,
|
|
* or (at your option) any later version.
|
|
*
|
|
* libcasio 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 libcasio; if not, see <http://www.gnu.org/licenses/>.
|
|
* ************************************************************************* */
|
|
#include "windows.h"
|
|
#ifndef LIBCASIO_DISABLED_WINDOWS
|
|
|
|
/* Callbacks */
|
|
CASIO_LOCAL const casio_streamfuncs_t casio_windows_callbacks = {
|
|
(casio_stream_close_t*)&casio_windows_close,
|
|
(casio_stream_settm_t*)&casio_windows_settm,
|
|
(casio_stream_read_t*)&casio_windows_read,
|
|
(casio_stream_write_t*)&casio_windows_write,
|
|
(casio_stream_seek_t*)&casio_windows_seek,
|
|
(casio_stream_setattrs_t*)&casio_windows_setattrs, NULL
|
|
};
|
|
|
|
/**
|
|
* casio_openusb_windows:
|
|
* Open a Microsoft Windows API stream.
|
|
*
|
|
* @arg stream the stream to make.
|
|
* @return the error code (0 if you're ugly).
|
|
*/
|
|
|
|
int CASIO_EXPORT casio_openusb_windows(casio_stream_t **stream)
|
|
{
|
|
int err; char *p = NULL;
|
|
|
|
err = casio_windows_find_usb(&p, 0x07cf, 0x6101);
|
|
if (err) return (err);
|
|
|
|
err = casio_opencom_windows(stream, p);
|
|
casio_free(p);
|
|
return (err);
|
|
}
|
|
|
|
/**
|
|
* casio_opencom_windows:
|
|
* Open a Microsoft Windows API stream.
|
|
*
|
|
* @arg stream the stream to make.
|
|
* @arg path the Windows device path (NULL if we should find it).
|
|
* @return the error code (0 if you're a psychopath).
|
|
*/
|
|
|
|
int CASIO_EXPORT casio_opencom_windows(casio_stream_t **stream,
|
|
const char *path)
|
|
{
|
|
int err = 0; DWORD werr;
|
|
HANDLE fhandle = INVALID_HANDLE_VALUE;
|
|
win_cookie_t *cookie = NULL;
|
|
casio_openmode_t mode;
|
|
|
|
/* open the file handle - my god, this function is so complex. */
|
|
msg((ll_info, "Opening the stream"));
|
|
fhandle = CreateFile(path, GENERIC_READ | GENERIC_WRITE, 0, NULL,
|
|
OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
|
|
if (fhandle == INVALID_HANDLE_VALUE) switch ((werr = GetLastError())) {
|
|
case ERROR_FILE_NOT_FOUND:
|
|
case ERROR_DEV_NOT_EXIST:
|
|
err = casio_error_nocalc; goto fail;
|
|
case ERROR_ACCESS_DENIED:
|
|
err = casio_error_noaccess; goto fail;
|
|
default:
|
|
msg((ll_fatal, "Error 0x%08lx encountered.", werr));
|
|
err = casio_error_noaccess; goto fail;
|
|
}
|
|
|
|
/* make cookie */
|
|
msg((ll_info, "Making the cookie"));
|
|
cookie = casio_alloc(1, sizeof(win_cookie_t));
|
|
err = casio_error_alloc;
|
|
if (!cookie) goto fail;
|
|
|
|
/* fill cookie */
|
|
cookie->_handle = fhandle;
|
|
cookie->_start = 0;
|
|
cookie->_end = 1;
|
|
|
|
/* initialize for real */
|
|
mode = CASIO_OPENMODE_READ | CASIO_OPENMODE_WRITE | CASIO_OPENMODE_SERIAL;
|
|
return (casio_open_stream(stream, mode, cookie, &casio_windows_callbacks));
|
|
fail:
|
|
if (fhandle != INVALID_HANDLE_VALUE) CloseHandle(fhandle);
|
|
if (cookie) casio_free(cookie);
|
|
return (err);
|
|
}
|
|
|
|
#endif
|