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|
#!/bin/bash
#
# Download LineageOS images
#
# Parameters
BASENAME="`basename $0`"
DEVICE="$1"
VERSION="$2"
DATE="$3"
FILE="lineage-${VERSION}-${DATE}-nightly-${DEVICE}-signed.zip"
UPSTREAM="https://download.lineageos.org"
RECOVERY="lineage-${VERSION}-${DATE}-recovery-${DEVICE}.img"
RECOVERY_URL="https://mirrorbits.lineageos.org/recovery/${DEVICE}/${DATE}/${RECOVERY}"
BASE_URL="https://mirrorbits.lineageos.org/full/${DEVICE}/${DATE}/${FILE}"
DL_PAGE="https://download.lineageos.org/${DEVICE}"
DL_PATTERN="mirrorbits"
DL="$HOME/data/distros/lineageos/official/${DEVICE}"
CWD="`pwd`"
# Determine latest image version
function lineageos_dl_determine_latest {
local type="$1"
lynx -dump "${UPSTREAM}/${DEVICE}" | grep ${DL_PATTERN} | awk '{ print $2 }' | grep ${type} | sort -r | grep -v -v '?sha256' | head -1
}
# Syntax check
if [ -z "$DATE" ]; then
if [ ! -z "$DEVICE" ]; then
echo "$BASENAME: trying to guess download URLs and file names..."
BASE_URL="`lineageos_dl_determine_latest full`"
FILE="`basename $BASE_URL`"
RECOVERY_URL="`lineageos_dl_determine_latest recovery`"
RECOVERY="`basename $RECOVERY_URL`"
if [ -z "$BASE_URL" ]; then
echo "error: could not automatically determine download URL, please specify version and build date manually"
exit 1
fi
else
echo "usage: $BASENAME <device> [<version <build_date>]"
echo "example: $BASENAME cedric"
echo "example: $BASENAME cedric 17.1 20210325"
exit 1
fi
fi
# Set file names
HASH="$FILE.sha256"
RECOVERY_HASH="$RECOVERY.sha256"
# Ensure destination folder exists
echo "$BASENAME: download destination set to $DL"
mkdir -p $DL
# Download package
if [ ! -e "$DL/$FILE" ]; then
wget -c $BASE_URL -O $DL/$FILE || exit 1
else
echo "$BASENAME: file $FILE already exists, skipping"
fi
# Download signature
if [ ! -e "$DL/$HASH" ]; then
wget -c "$BASE_URL?sha256" -O $DL/$HASH || exit 1
else
echo "$BASENAME: file $HASH already exists, skipping"
fi
# Download recovery
if [ ! -e "$DL/$RECOVERY" ]; then
wget -c $RECOVERY_URL -O $DL/$RECOVERY || exit 1
else
echo "$BASENAME: file $RECOVERY already exists, skipping"
fi
# Download recovery signature
if [ ! -e "$DL/$RECOVERY_HASH" ]; then
wget -c $RECOVERY_URL?sha256 -O $DL/$RECOVERY_HASH || exit 1
else
echo "$BASENAME: file $RECOVERY_HASH already exists, skipping"
fi
cd $DL
echo "$BASENAME: checking hashes..."
sha256sum -c $HASH
sha256sum -c $RECOVERY_HASH
# Verify build authenticity
echo "$BASENAME: please verify build authenticity with a procedure like this:"
echo ""
echo "git clone https://github.com/LineageOS/update_verifier"
echo "cd update_verifier"
echo "pip3 install -r requirements.txt"
echo "python3 update_verifier.py lineageos_pubkey $DL/$FILE"
echo ""
echo "more info at https://wiki.lineageos.org/verifying-builds.html"
# Teardown
cd $CWD
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