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#!/bin/sh
# Download a pinned scrcpy-server.jar release, verify SHA-256 against an
# in-script allow-list, and install it into app assets. Idempotent.
#
# Usage:
# scripts/update-server # use DEFAULT_VERSION below
# scripts/update-server 4.1 # use explicit version
#
# Bumping to a new release:
# 1. Run with the new version. The script will print the observed SHA-256
# and exit non-zero if it is not in the allow-list.
# 2. Paste the printed line into the `case` below.
# 3. Update DEFAULT_VERSION.
# 4. Re-run. Commit the assets.
set -eu
DEFAULT_VERSION='4.1'
VERSION="${1:-$DEFAULT_VERSION}"
if ! printf '%s\n' "$VERSION" \
| awk '/^[0-9]+([.][0-9]+)*$/ { ok = 1 } END { exit !ok }'; then
echo "update-server: invalid version: $VERSION" >&2
exit 2
fi
ROOT="$(cd "$(dirname "$0")/.." && pwd)"
ASSETS="$ROOT/app/src/main/assets"
URL="https://github.com/Genymobile/scrcpy/releases/download/v$VERSION/scrcpy-server-v$VERSION"
# Known-good SHA-256 sums. Keep one line per blessed version.
EXPECTED=$(cat <<EOF
4.1 deacb991ed2509715160ffdc7907e47b4160eb30d1566217e9047fd5b8850cae
EOF
)
want=$(printf '%s\n' "$EXPECTED" | awk -v v="$VERSION" '$1==v {print $2}')
if [ -z "$want" ]; then
echo "update-server: version $VERSION is not in the allow-list" >&2
echo " to bless it, add this line to the EXPECTED block in this script:" >&2
echo " $VERSION <sha256-of-the-downloaded-binary>" >&2
fi
if [ -f "$ASSETS/scrcpy-server.jar" ] \
&& [ "$(cat "$ASSETS/scrcpy-server.version" 2>/dev/null || true)" = "$VERSION" ] \
&& [ "$(sha256sum "$ASSETS/scrcpy-server.jar" | awk '{print $1}')" = "$want" ]; then
printf '%s\n' "$want" >"$ASSETS/scrcpy-server.sha256"
echo "update-server: already installed $ASSETS/scrcpy-server.jar v$VERSION"
exit 0
fi
mkdir -p "$ASSETS"
tmp=$(mktemp)
trap 'rm -f "$tmp"' EXIT
echo "update-server: GET $URL"
curl -fsSL -o "$tmp" "$URL"
got=$(sha256sum "$tmp" | awk '{print $1}')
echo "update-server: sha256 $got"
if [ -z "$want" ]; then
echo "update-server: refusing to install unverified jar" >&2
exit 1
fi
if [ "$got" != "$want" ]; then
echo "update-server: sha256 mismatch" >&2
echo " want: $want" >&2
echo " got: $got" >&2
exit 1
fi
install -m 0644 "$tmp" "$ASSETS/scrcpy-server.jar"
printf '%s\n' "$VERSION" >"$ASSETS/scrcpy-server.version"
printf '%s\n' "$got" >"$ASSETS/scrcpy-server.sha256"
echo "update-server: installed $ASSETS/scrcpy-server.jar v$VERSION"
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