mirror of https://github.com/ventoy/Ventoy
160 lines
3.3 KiB
C
160 lines
3.3 KiB
C
/******************************************************************************
|
|
* vtoyfat.c ---- Parse fat file system
|
|
*
|
|
* Copyright (c) 2020, longpanda <admin@ventoy.net>
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License as
|
|
* published by the Free Software Foundation; either version 3 of the
|
|
* License, or (at your option) any later version.
|
|
*
|
|
* 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 <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
#include <errno.h>
|
|
#include <sys/stat.h>
|
|
#include <fcntl.h>
|
|
|
|
#include <fat_filelib.h>
|
|
|
|
static int g_disk_fd = 0;
|
|
|
|
static int vtoy_disk_read(uint32 sector, uint8 *buffer, uint32 sector_count)
|
|
{
|
|
lseek(g_disk_fd, sector * 512, SEEK_SET);
|
|
read(g_disk_fd, buffer, sector_count * 512);
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int check_secure_boot(void)
|
|
{
|
|
void *flfile = NULL;
|
|
|
|
flfile = fl_fopen("/EFI/BOOT/grubx64_real.efi", "rb");
|
|
if (flfile)
|
|
{
|
|
fl_fclose(flfile);
|
|
return 0;
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int get_ventoy_version(void)
|
|
{
|
|
int rc = 1;
|
|
int size = 0;
|
|
char *buf = NULL;
|
|
char *pos = NULL;
|
|
char *end = NULL;
|
|
void *flfile = NULL;
|
|
|
|
flfile = fl_fopen("/grub/grub.cfg", "rb");
|
|
if (flfile)
|
|
{
|
|
fl_fseek(flfile, 0, SEEK_END);
|
|
size = (int)fl_ftell(flfile);
|
|
|
|
fl_fseek(flfile, 0, SEEK_SET);
|
|
|
|
buf = malloc(size + 1);
|
|
if (buf)
|
|
{
|
|
fl_fread(buf, 1, size, flfile);
|
|
buf[size] = 0;
|
|
|
|
pos = strstr(buf, "VENTOY_VERSION=");
|
|
if (pos)
|
|
{
|
|
pos += strlen("VENTOY_VERSION=");
|
|
if (*pos == '"')
|
|
{
|
|
pos++;
|
|
}
|
|
|
|
end = pos;
|
|
while (*end != 0 && *end != '"' && *end != '\r' && *end != '\n')
|
|
{
|
|
end++;
|
|
}
|
|
|
|
*end = 0;
|
|
|
|
printf("%s\n", pos);
|
|
rc = 0;
|
|
}
|
|
free(buf);
|
|
}
|
|
|
|
fl_fclose(flfile);
|
|
}
|
|
|
|
return rc;
|
|
}
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
int op = 0;
|
|
int rc = 1;
|
|
char *disk;
|
|
|
|
if (argc != 2 && argc != 3)
|
|
{
|
|
printf("Usage: vtoyfat /dev/sdbs \n");
|
|
printf("Usage: vtoyfat -s /dev/sdbs \n");
|
|
return 1;
|
|
}
|
|
|
|
if (argv[1][0] == '-' && argv[1][1] == 'T')
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
disk = argv[1];
|
|
if (argv[1][0] == '-' && argv[1][1] == 's')
|
|
{
|
|
op = 1;
|
|
disk = argv[2];
|
|
}
|
|
|
|
g_disk_fd = open(disk, O_RDONLY);
|
|
if (g_disk_fd < 0)
|
|
{
|
|
printf("Failed to open %s\n", disk);
|
|
return 1;
|
|
}
|
|
|
|
fl_init();
|
|
|
|
if (0 == fl_attach_media(vtoy_disk_read, NULL))
|
|
{
|
|
if (op == 0)
|
|
{
|
|
rc = get_ventoy_version();
|
|
}
|
|
else
|
|
{
|
|
rc = check_secure_boot();
|
|
}
|
|
}
|
|
|
|
fl_shutdown();
|
|
|
|
close(g_disk_fd);
|
|
|
|
return rc;
|
|
}
|
|
|