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Add shell script function base64decode()

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GONG Jie 2018-12-28 15:32:30 +08:00
parent 01f254f136
commit ea6f4afcfc
1 changed files with 56 additions and 0 deletions
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56
xCAT-server/share/xcat/install/scripts/pre.rh.rhels7
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@ -144,7 +144,63 @@ fi
/tmp/foo.py >/foo.log 2>&1 &
base64decode()
{
h0="0"; h1="1"; h2="2"; h3="3"; h4="4"; h5="5"; h6="6"; h7="7";
h8="8"; h9="9"; h10="A"; h11="B"; h12="C"; h13="D"; h14="E"; h15="F";
while :
do
i=0
while [ "$i" -lt 4 ]
do
read -n 1 c || return
case "${c}" in
"A") d=0 ;; "B") d=1 ;; "C") d=2 ;; "D") d=3 ;;
"E") d=4 ;; "F") d=5 ;; "G") d=6 ;; "H") d=7 ;;
"I") d=8 ;; "J") d=9 ;; "K") d=10 ;; "L") d=11 ;;
"M") d=12 ;; "N") d=13 ;; "O") d=14 ;; "P") d=15 ;;
"Q") d=16 ;; "R") d=17 ;; "S") d=18 ;; "T") d=19 ;;
"U") d=20 ;; "V") d=21 ;; "W") d=22 ;; "X") d=23 ;;
"Y") d=24 ;; "Z") d=25 ;; "a") d=26 ;; "b") d=27 ;;
"c") d=28 ;; "d") d=29 ;; "e") d=30 ;; "f") d=31 ;;
"g") d=32 ;; "h") d=33 ;; "i") d=34 ;; "j") d=35 ;;
"k") d=36 ;; "l") d=37 ;; "m") d=38 ;; "n") d=39 ;;
"o") d=40 ;; "p") d=41 ;; "q") d=42 ;; "r") d=43 ;;
"s") d=44 ;; "t") d=45 ;; "u") d=46 ;; "v") d=47 ;;
"w") d=48 ;; "x") d=49 ;; "y") d=50 ;; "z") d=51 ;;
"0") d=52 ;; "1") d=53 ;; "2") d=54 ;; "3") d=55 ;;
"4") d=56 ;; "5") d=57 ;; "6") d=58 ;; "7") d=59 ;;
"8") d=60 ;; "9") d=61 ;; "+") d=62 ;; "/") d=63 ;;
"=") d=0 ;;
*) continue ;;
esac
eval "a${i}=${c}"
eval "b${i}=${d}"
i=$(( i + 1 ))
done
o0=$(( ((b0 << 2) | (b1 >> 4)) & 0xff ))
o1=$(( ((b1 << 4) | (b2 >> 2)) & 0xff ))
o2=$(( ((b2 << 6) | b3) & 0xff ))
[ "${a2}" == "=" ] &&
eval "printf \"\\x\${h$(( o0 / 16 ))}\${h$(( o0 % 16
))}\"" &&
return
[ "${a3}" == "=" ] &&
eval "printf \"\\x\${h$(( o0 / 16 ))}\${h$(( o0 % 16
))}\\x\${h$(( o1 / 16 ))}\${h$(( o1 % 16
))}\"" &&
return
eval "printf \"\\x\${h$(( o0 / 16 ))}\${h$(( o0 % 16
))}\\x\${h$(( o1 / 16 ))}\${h$(( o1 % 16
))}\\x\${h$(( o2 / 16 ))}\${h$(( o2 % 16 ))}\""
done
}
#time to ascertain fstype and PReP/UEFI/legacy
#also, find first available block device (sda or vda likely)