/* Copyright (c) 2007, Christophe Fergeau <teuf@gnome.org>
* Part of the libgpod project.
*
* URL: http://www.gtkpod.org/
* URL: http://gtkpod.sourceforge.net/
*
* The code contained in this file 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
* 2.1 of the License, or (at your option) any later version.
*
* This file 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 code; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* iTunes and iPod are trademarks of Apple
*
* This product is not supported/written/published by Apple!
*
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <unistd.h>
#include <scsi/sg_cmds.h>
#include <sys/stat.h>
#include <time.h>
#include <glib.h>
extern void sync_time (const char *device, struct tm *tm);
extern char *read_sysinfo_extended (const char *device);
/* do_sg_inquiry and read_sysinfo_extended were heavily
* inspired from libipoddevice
*/
static unsigned char
do_sg_inquiry (int fd, int page, char *buf, char **start)
{
const unsigned int IPOD_BUF_LENGTH = 252;
if (sg_ll_inquiry (fd, 0, 1, page, buf, IPOD_BUF_LENGTH, 1, 0) != 0) {
*start = NULL;
return 0;
} else {
*start = buf + 4;
return (unsigned char)buf[3];
}
}
G_GNUC_INTERNAL char *
read_sysinfo_extended (const char *device)
{
int fd;
const unsigned int IPOD_XML_PAGE = 0xc0;
unsigned char len;
char buf[512];
char *start;
char *offsets;
GString *xml_sysinfo;
unsigned int i;
fd = open (device, O_RDONLY);
if (fd < 0) {
return NULL;
}
len = do_sg_inquiry (fd, IPOD_XML_PAGE, buf, &start);
if (start == NULL || len == 0) {
close(fd);
return NULL;
}
offsets = g_new (char, len+1);
memcpy(offsets, start, len);
offsets[len] = 0;
xml_sysinfo = g_string_new_len (NULL, 512);
if (xml_sysinfo == NULL) {
g_free (offsets);
close (fd);
return NULL;
}
for (i = 0; offsets[i]; i++) {
bzero(buf, 512);
len = do_sg_inquiry (fd, offsets[i], buf, &start);
start[len] = 0;
g_string_append (xml_sysinfo, start);
}
g_free (offsets);
close (fd);
return g_string_free (xml_sysinfo, FALSE);
}
static void do_sg_write_buffer (const char *device, void *buffer, size_t len)
{
int fd;
guint i;
fd = open (device, O_RDWR);
if (fd < 0) {
g_warning ("Couldn't open device %s", device);
return;
}
g_print (" Data Payload: ");
for (i = 0; i < len; i++) {
g_print ("%02x ", *((guchar *)buffer+i));
}
g_print ("\n");
if (sg_ll_write_buffer (fd, 1, 0, 0x0c0000, buffer, len, 1, 1) != 0) {
g_print ("Error sending data\n");
}
close(fd);
}
G_GNUC_INTERNAL void sync_time (const char *device, struct tm *tm)
{
struct iPodTime {
guint16 year;
guint16 days;
guchar timezone;
guchar hour;
guchar minute;
guchar second;
guchar dst;
guchar padding[3];
} __attribute__((__packed__));
struct iPodTime ipod_time;
if (tm == NULL) {
time_t current_time;
current_time = time (NULL);
tm = localtime (¤t_time);
}
ipod_time.year = GUINT16_TO_BE (1900+tm->tm_year);
ipod_time.days = GUINT16_TO_BE (tm->tm_yday);
/* the timezone value is the shift east of UTC in 15 min chunks
* so eg. UTC+2 is 2*4 = 8
*/
ipod_time.timezone = tm->tm_gmtoff / 900;
ipod_time.hour = tm->tm_hour;
ipod_time.minute = tm->tm_min;
ipod_time.second = tm->tm_sec;
if (tm->tm_isdst) {
ipod_time.dst = 1;
} else {
ipod_time.dst = 0;
}
memset (ipod_time.padding, 0, sizeof (ipod_time.padding));
do_sg_write_buffer (device, &ipod_time, sizeof (ipod_time));
}