wok view BootProg/stuff/bootprog.sh @ rev 25463

Up expat (2.4.9) fixes CVE-2022-40674
author Pascal Bellard <pascal.bellard@slitaz.org>
date Thu Sep 29 20:05:23 2022 +0000 (19 months ago)
parents d4a851cd7f09
children 2155b2665e26
line source
1 #!/bin/sh
2
3 set -- "$1" "${2:-startup.bin}"
4 [ ! -e "$1" ] && cat<<S && exit 2
5 Usage: [FS=<FAT12|FAT16|FAT32|EXFAT>] $0 device [file]
6 Example: $0 /dev/fd0 $2
7 S
8 r="dd if=$1 count"
9 w="dd of=$1 bs=1 conv=notrunc seek"
10 while read c o b f
11 do [ "${FS:-$($r=5 bs=1 skip=$c)}" = "$f" ] || continue
12 echo "Install $f bootsector on $1."
13 for a in "$o skip=$((o+b)) count=$((512-o))" "0 skip=$b count=11"
14 do sed '1,/^exit/d' $0 | unlzma | $w=$a; done
15 echo -n $f | $w=$c
16 echo "Set boot file $2" && echo -n "$2" | case "$f" in
17 E*) sed 's| |.|;s| ||g' | cat - /dev/zero;;
18 *) tr a-z A-Z | sed 's|\.| |;s|^\(.\{8\}\) *|\1|;s|$| |'
19 esac | $w=499 count=11
20 case "$f" in
21 *32) $w=1536 if=$1 count=512;;
22 E*) $r=11 bs=1b | od -vAn -tu1 -w1 - | LANG=C awk 'BEGIN { a=0;i=-1;m=0xFFFFFFFE }
23 { if (++i!=106 && i!=107 && i!=112) a=or(and(lshift(a,31),m),and(rshift(a,1),m/2))+$1 }
24 END { b=a/256;c=b/256; for (;i>0;i-=44) printf "%c%c%c%c",a%256,b%256,c%256,(c/256)%256 }' | $w=5632
25 esac
26 exit 0
27 done<<S 2>/dev/null
28 54 59 0 FAT12
29 54 59 0 FAT16
30 82 87 512 FAT32
31 3 113 1024 EXFAT
32 S
33 exit 1