1/*
2 * bt3cfw.c
3 *
4 * Copyright (c) 2001 Maksim Yevmenkin <m_evmenkin@yahoo.com>
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 *
28 * $Id: bt3cfw.c,v 1.2 2003/05/21 22:40:29 max Exp $
29 * $FreeBSD$
30 */
31
32#include <sys/types.h>
33#include <errno.h>
34#include <netgraph.h>
35#include <netgraph/bluetooth/include/ng_bt3c.h>
36#include <stdarg.h>
37#include <stdio.h>
38#include <stdlib.h>
39#include <string.h>
40#include <syslog.h>
41#include <unistd.h>
42
43#define BT3CFW_IDENT			"bt3cfw"
44#define BT3CFW_MAX_FIRMWARE_SIZE	0xffff
45
46/* Convert hex ASCII to int4 */
47static int
48hexa2int4(const char *a)
49{
50	if ('0' <= *a && *a <= '9')
51		return (*a - '0');
52
53	if ('A' <= *a && *a <= 'F')
54		return (*a - 'A' + 0xa);
55
56	if ('a' <= *a && *a <= 'f')
57		return (*a - 'a' + 0xa);
58
59	syslog(LOG_ERR, "Invalid hex character: '%c' (%#x)", *a, *a);
60	exit(255);
61}
62
63/* Convert hex ASCII to int8 */
64static int
65hexa2int8(const char *a)
66{
67	return ((hexa2int4(a) << 4) | hexa2int4(a + 1));
68}
69
70/* Convert hex ASCII to int16 */
71static int
72hexa2int16(const char *a)
73{
74	return ((hexa2int8(a) << 8) | hexa2int8(a + 2));
75}
76
77/* Convert hex ASCII to int32 */
78static int
79hexa2int32(const char *a)
80{
81	return ((hexa2int16(a) << 16) | hexa2int16(a + 4));
82}
83
84/* Display usage() and exit */
85static void
86usage(void)
87{
88	syslog(LOG_ERR, "Usage: %s -f FirmwareFile -n NodeName", BT3CFW_IDENT);
89	exit(255);
90}
91
92/* Main */
93int
94main(int argc, char *argv[])
95{
96	FILE	*firmware_file = NULL;
97	char	 buffer[80], path[NG_PATHSIZ],
98		*firmware_filename = NULL;
99	uint8_t	*firmware = NULL;
100	int	 firmware_size, opt, cs, ds;
101
102	memset(path, 0, sizeof(path));
103	openlog(BT3CFW_IDENT, LOG_NDELAY|LOG_PID|LOG_PERROR, LOG_USER);
104
105	while ((opt = getopt(argc, argv, "f:hn:")) != -1) {
106		switch (opt) {
107		case 'f':
108			firmware_filename = optarg;
109			break;
110
111		case 'n':
112			snprintf(path, sizeof(path), "%s:", optarg);
113			break;
114
115		case 'h':
116		default:
117			usage();
118			/* NOT REACHED */
119		}
120	}
121
122	if (firmware_filename == NULL || path[0] == 0)
123		usage();
124		/* NOT REACHED */
125
126	firmware = (uint8_t *) calloc(BT3CFW_MAX_FIRMWARE_SIZE,
127					sizeof(uint8_t));
128	if (firmware == NULL) {
129		syslog(LOG_ERR, "Could not allocate firmware buffer");
130		exit(255);
131	}
132
133	if ((firmware_file = fopen(firmware_filename, "r")) == NULL) {
134		syslog(LOG_ERR, "Could not open BT3C firmware file %s. %s (%d)",
135				firmware_filename, strerror(errno), errno);
136		exit(255);
137	}
138
139	firmware_size = 0;
140
141	while (fgets(buffer, sizeof(buffer), firmware_file)) {
142		int     i, size, address, cs, fcs;
143
144		size = hexa2int8(buffer + 2);
145		address = hexa2int32(buffer + 4);
146		fcs = hexa2int8(buffer + 2 + size * 2);
147
148		if (buffer[1] == '3') {
149			ng_bt3c_firmware_block_ep	*block = NULL;
150			uint16_t			*data = NULL;
151
152			block = (ng_bt3c_firmware_block_ep *)
153						(firmware + firmware_size);
154
155			firmware_size += sizeof(*block);
156			if (firmware_size >= BT3CFW_MAX_FIRMWARE_SIZE) {
157				syslog(LOG_ERR, "Could not add new firmware " \
158						"block. Firmware file %s is " \
159						"too big, firmware_size=%d",
160						firmware_filename,
161						firmware_size);
162				exit(255);
163			}
164
165			block->block_address = address;
166			block->block_size = (size - 4) / 2;
167			block->block_alignment = (block->block_size * 2) % 3;
168			if (block->block_alignment != 0)
169				block->block_alignment = 3 - block->block_alignment;
170
171			firmware_size += (block->block_size * 2);
172			firmware_size += block->block_alignment;
173			if (firmware_size >= BT3CFW_MAX_FIRMWARE_SIZE) {
174				syslog(LOG_ERR, "Could not add new firmware " \
175						"data. Firmware file %s is " \
176						"too big, firmware_size=%d",
177						firmware_filename,
178						firmware_size);
179				exit(255);
180			}
181
182			/* First part of the cheksum: size and address */
183			cs = 0;
184			for (i = 0; i < 5; i++)
185				cs += hexa2int8(buffer + 2 + i * 2);
186
187			/* Data + second part of the cheksum: data */
188			data = (uint16_t *)(block + 1);
189			for (i = 0; i < block->block_size; i++) {
190				data[i] = hexa2int16(buffer + (i * 4) + 12);
191				cs += (((data[i] & 0xff00) >> 8) & 0xff);
192				cs += (data[i] & 0x00ff);
193			}
194		} else
195			for (cs = 0, i = 0; i < size; i++)
196				cs += hexa2int8(buffer + 2 + i * 2);
197
198		if (((cs + fcs) & 0xff) != 0xff) {
199			syslog(LOG_ERR, "Invalid firmware file %s. Checksum " \
200					"error, cs=%#x, fcs=%#x, checksum=%#x",
201					firmware_filename, (cs & 0xff), fcs,
202					((cs + fcs) & 0xff));
203			exit(255);
204		}
205	}
206
207	/* Send firmware to the card */
208	if (NgMkSockNode(NULL, &cs, &ds) < 0) {
209		syslog(LOG_ERR, "Could not create Netgraph socket. %s (%d)",
210				strerror(errno), errno);
211		exit(255);
212	}
213
214	if (NgSendMsg(cs, path, NGM_BT3C_COOKIE,
215			NGM_BT3C_NODE_DOWNLOAD_FIRMWARE,
216			(void const *) firmware, firmware_size) < 0) {
217		syslog(LOG_ERR, "Could not send Netgraph message. %s (%d)",
218				strerror(errno), errno);
219		exit(255);
220	}
221
222	free(firmware);
223	firmware = NULL;
224	fclose(firmware_file);
225
226	return (0);
227}
228
229