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/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* Copyright (C) 2011 Red Hat, Inc.
*
* This program is free software: you can redistribute it and/or
* modify it under the terms of version 2 of the GNU General Public
* License as published by the Free Software Foundation
*
* 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, see <http://www.gnu.org/licenses/>.
*/
#include <string.h>
#include "commands.h"
#include "errors.h"
#include "result-private.h"
#include "utils.h"
#include "protocol.h"
/**********************************************************************/
static int
check_command (const char *buf, gsize len, u_int8_t cmd, size_t min_len)
{
if (len < 1) {
wmc_err (0, "Zero-length response");
return -WMC_ERROR_RESPONSE_BAD_LENGTH;
}
if ((u_int8_t) buf[0] != WMC_CMD_MARKER) {
wmc_err (0, "Missing WMC command marker (expected 0x%02X, got 0x%02X)",
WMC_CMD_MARKER, (u_int8_t) buf[0]);
return -WMC_ERROR_RESPONSE_UNEXPECTED;
}
if ((u_int8_t) buf[1] != cmd) {
wmc_err (0, "Unexpected WMC command response (expected 0x%02X, got 0x%02X)",
(u_int8_t) cmd, (u_int8_t) buf[1]);
return -WMC_ERROR_RESPONSE_UNEXPECTED;
}
if (len < min_len) {
wmc_err (0, "WMC command %d response not long enough (got %zu, expected "
"at least %zu).", cmd, len, min_len);
return -WMC_ERROR_RESPONSE_BAD_LENGTH;
}
return 0;
}
/**********************************************************************/
/**
* wmc_cmd_init_new:
* @buf: buffer in which to store constructed command
* @buflen: size of @buf
* @wmc2: if %TRUE add additional data that later-model devices (UML290) want
*
* Returns: size of the constructed command on success, or 0 on failure
*/
size_t
wmc_cmd_init_new (char *buf, size_t buflen, int wmc2)
{
wmc_return_val_if_fail (buf != NULL, 0);
if (wmc2) {
WmcCmdInit2 *cmd = (WmcCmdInit2 *) buf;
const char data[] = { 0xda, 0x07, 0x0c, 0x00, 0x1e, 0x00, 0x09, 0x00, 0x39,
0x00, 0x18, 0x00, 0x04, 0x00 };
wmc_return_val_if_fail (buflen >= sizeof (*cmd), 0);
memset (cmd, 0, sizeof (*cmd));
cmd->hdr.marker = WMC_CMD_MARKER;
cmd->hdr.cmd = WMC_CMD_INIT;
memcpy (cmd->_unknown1, data, sizeof (data));
return sizeof (*cmd);
} else {
WmcCmdHeader *cmd = (WmcCmdHeader *) buf;
wmc_return_val_if_fail (buflen >= sizeof (*cmd), 0);
memset (cmd, 0, sizeof (*cmd));
cmd->marker = WMC_CMD_MARKER;
cmd->cmd = WMC_CMD_INIT;
return sizeof (*cmd);
}
}
WmcResult *
wmc_cmd_init_result (const char *buf, gsize buflen, int wmc2)
{
g_return_val_if_fail (buf != NULL, NULL);
if (wmc2) {
if (check_command (buf, buflen, WMC_CMD_INIT, sizeof (WmcCmdInit2Rsp)) < 0)
return NULL;
} else {
if (check_command (buf, buflen, WMC_CMD_INIT, sizeof (WmcCmdHeader)) < 0)
return NULL;
}
return wmc_result_new ();
}
/**********************************************************************/
size_t
wmc_cmd_device_info_new (char *buf, size_t buflen)
{
WmcCmdHeader *cmd = (WmcCmdHeader *) buf;
wmc_return_val_if_fail (buf != NULL, 0);
wmc_return_val_if_fail (buflen >= sizeof (*cmd), 0);
memset (cmd, 0, sizeof (*cmd));
cmd->marker = WMC_CMD_MARKER;
cmd->cmd = WMC_CMD_DEVICE_INFO;
return sizeof (*cmd);
}
WmcResult *
wmc_cmd_device_info_result (const char *buf, gsize buflen)
{
WmcResult *r = NULL;
WmcCmdDeviceInfoRsp *rsp = (WmcCmdDeviceInfoRsp *) buf;
char tmp[65];
g_return_val_if_fail (buf != NULL, NULL);
if (check_command (buf, buflen, WMC_CMD_DEVICE_INFO, sizeof (WmcCmdDeviceInfoRsp)) < 0)
return NULL;
r = wmc_result_new ();
/* Manf */
memset (tmp, 0, sizeof (tmp));
g_assert (sizeof (rsp->manf) <= sizeof (tmp));
memcpy (tmp, rsp->manf, sizeof (rsp->manf));
wmc_result_add_string (r, WMC_CMD_DEVICE_INFO_ITEM_MANUFACTURER, tmp);
/* Model */
memset (tmp, 0, sizeof (tmp));
g_assert (sizeof (rsp->model) <= sizeof (tmp));
memcpy (tmp, rsp->model, sizeof (rsp->model));
wmc_result_add_string (r, WMC_CMD_DEVICE_INFO_ITEM_MODEL, tmp);
/* Firmware revision */
memset (tmp, 0, sizeof (tmp));
g_assert (sizeof (rsp->fwrev) <= sizeof (tmp));
memcpy (tmp, rsp->fwrev, sizeof (rsp->fwrev));
wmc_result_add_string (r, WMC_CMD_DEVICE_INFO_ITEM_FW_REVISION, tmp);
/* Hardware revision */
memset (tmp, 0, sizeof (tmp));
g_assert (sizeof (rsp->hwrev) <= sizeof (tmp));
memcpy (tmp, rsp->hwrev, sizeof (rsp->hwrev));
wmc_result_add_string (r, WMC_CMD_DEVICE_INFO_ITEM_HW_REVISION, tmp);
return r;
}
/**********************************************************************/
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