remove the file
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c2e4723f83
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@ -1,128 +0,0 @@
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#!/bin/sh
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# $1 update package
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# $2 output directory
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# $3 pub key to verify sig
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# $4 pri key to decrypt data key
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SIG_FILE="$2/sig.dat"
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AES256_KEY="$2/aes256.key"
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IV="$2/iv"
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ANIM_SIG_FILE="$2/anim_sig.dat"
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ANIM_PID=0
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epd_cmd()
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{
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epd_fb_test $@ >/dev/null 2>&1
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}
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########################################
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# file header check
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########################################
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HEAD_MARK=`head -c 4 $1`
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if [ $HEAD_MARK != "DPUP" ]
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then
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echo "Invalid file"
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exit 0
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fi
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DATA_OFFSET=`dd if=$1 bs=4 skip=1 count=1 2>/dev/null | od -A n -t d4 -v`
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BODY_SIZE=`dd if=$1 bs=4 skip=2 count=1 2>/dev/null | od -A n -t d4 -v`
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########################################
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# start animation for package check
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########################################
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ANIM_HEADER_OFFSET=$(( $DATA_OFFSET + $BODY_SIZE ))
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if [ -z "$ANIM_HEADER_OFFSET" ]
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then
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ANIM_HEADER_OFFSET=0
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fi
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ANIM_HEADER_SIZE=`dd if=$1 bs=1 skip=$ANIM_HEADER_OFFSET count=4 2>/dev/null | od -A n -t d4 -v`
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if [ -z "$ANIM_HEADER_SIZE" ]
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then
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ANIM_HEADER_SIZE=0
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fi
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ANIM_ARCH_SIZE=`dd if=$1 bs=1 skip=$(($ANIM_HEADER_OFFSET + 4)) count=4 2>/dev/null | od -A n -t d4 -v`
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ANIM_SIG_SIZE=`dd if=$1 bs=1 skip=$(($ANIM_HEADER_OFFSET + 8)) count=4 2>/dev/null | od -A n -t d4 -v`
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dd if=$1 of=$ANIM_SIG_FILE bs=1 skip=$(($ANIM_HEADER_OFFSET + 12)) count=$(($ANIM_SIG_SIZE)) 2>/dev/null
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ANIM_ARCH_OFFSET=$(($ANIM_HEADER_OFFSET + $ANIM_HEADER_SIZE))
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dd if=$1 bs=$ANIM_ARCH_OFFSET skip=1 2>/dev/null | head -c $(($ANIM_ARCH_SIZE)) | openssl dgst -sha256 -verify $3 -signature $ANIM_SIG_FILE 1>/dev/null
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if [ $? -eq 0 ]
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then
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start_prepare_animation.sh $1 $2 $ANIM_ARCH_OFFSET $(($ANIM_ARCH_SIZE)) &
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ANIM_PID=$!
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fi
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########################################
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# extract sig
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########################################
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SIG_SIZE=`dd if=$1 bs=4 skip=4 count=1 2>/dev/null | od -A n -t d4 -v`
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dd if=$1 of=$SIG_FILE bs=1 skip=20 count=$(($SIG_SIZE)) 2>/dev/null
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########################################
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# verify sig
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########################################
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dd if=$1 bs=$(($DATA_OFFSET)) skip=1 2>/dev/null | head -c $(($BODY_SIZE)) | openssl dgst -sha256 -verify $3 -signature $SIG_FILE 1>/dev/null
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if [ $? -ne 0 ]
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then
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echo "Verify failed."
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exit 0
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fi
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########################################
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# decrypt data key
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########################################
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ENC_KEY_OFFSET=$((20 + $SIG_SIZE))
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PAD_SIZE=$((16 - $SIG_SIZE % 16 ))
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if [ $PAD_SIZE -ne 16 ]
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then
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ENC_KEY_OFFSET=$(( $ENC_KEY_OFFSET + $PAD_SIZE ))
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fi
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ENC_KEY_SIZE=`dd if=$1 bs=1 skip=${ENC_KEY_OFFSET} count=4 2>/dev/null | od -A n -t d4 -v`
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ENC_KEY_OFFSET=$(( $ENC_KEY_OFFSET + 4 ))
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dd if=$1 bs=1 skip=${ENC_KEY_OFFSET} count=$(($ENC_KEY_SIZE)) 2>/dev/null | openssl rsautl -decrypt -inkey $4 > ${AES256_KEY}
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########################################
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# extract iv
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########################################
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IV_OFFSET=$(($ENC_KEY_OFFSET + $ENC_KEY_SIZE))
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dd if=$1 of=$IV bs=1 skip=${IV_OFFSET} count=32 2>/dev/null
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########################################
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# decrypt data and extract directory tree
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########################################
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dd if=$1 bs=$(($DATA_OFFSET)) skip=1 2>/dev/null | head -c $(($BODY_SIZE)) | openssl enc -d -aes-256-cbc -K `cat ${AES256_KEY}` -iv `cat ${IV}` | tar -xz -C $2
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########################################
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# stop animation for package check
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########################################
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if [ $ANIM_PID -ne 0 ]
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then
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kill $ANIM_PID
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epd_cmd gray DU PART 0
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epd_cmd wait 300000
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fi
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########################################
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# start updater
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########################################
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if [ -f ${2}/FwUpdater/eufwupdater.sh ]
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then
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${2}/FwUpdater/eufwupdater.sh
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exit $? # tentative
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else
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echo "Invalid archive (No updater script)."
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exit 0
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fi
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