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# SPDX-License-Identifier: GPL-2.0-or-later
#
# Copyright (C) 2020 Paul Spooren <mail@aparcar.org>
#
###
### size_compare - compare size of OpenWrt packages against upstream
###
### The script compares locally compiled package with the package indexes
### available upstream. This way the storage impact of optimizations or
### feature modifiactions is easy to see.
###
### If no environmental variables are set the scritp reads the current
### .config file. The evaluated env variables are the following:
###
### TARGET SUBTARGET ARCH PACKAGES BIN_DIR BASE_URL CHECK_INSTALLED
###
### Usage:
### ./scripts/size_compare.sh
###
### Options:
### -p --package-size Check IPK package size and not installed size
### -h --help This message
CONFIG_TARGET=$(sed -n 's/^CONFIG_TARGET_BOARD="\(.*\)"$/\1/p' .config)
CONFIG_SUBTARGET=$(sed -n 's/^CONFIG_TARGET_SUBTARGET="\(.*\)"$/\1/p' .config)
CONFIG_ARCH=$(sed -n 's/^CONFIG_TARGET_ARCH_PACKAGES="\(.*\)"$/\1/p' .config)
CONFIG_PACKAGES=$(sed -n 's/^CONFIG_PACKAGE_\(.*\)=y$/\1/p' .config | tr '\n' ' ')
CONFIG_BIN_DIR=$(sed -n 's/^CONFIG_BINARY_DIR="\(.*\)"$/\1/p' .config)
TARGET=${TARGET:-$CONFIG_TARGET}
SUBTARGET=${SUBTARGET:-$CONFIG_SUBTARGET}
ARCH=${ARCH:-$CONFIG_ARCH}
PACKAGES=${PACKAGES:-$CONFIG_PACKAGES}
BIN_DIR=${CONFIG_BIN_DIR:-./bin}
BASE_URL="${BASE_URL:-https://downloads.openwrt.org/snapshots}"
CHECK_INSTALLED="${CHECK_INSTALLED:-y}"
TARGET_URL="$BASE_URL/targets/$TARGET/$SUBTARGET/packages/Packages.gz"
CONFIG_URL="$BASE_URL/targets/$TARGET/$SUBTARGET/config.buildinfo"
PACKAGES_URL="$BASE_URL/packages/$ARCH/base/Packages.gz"
if command -v curl > /dev/null; then
DOWNLOAD_METHOD="curl"
else
DOWNLOAD_METHOD="wget --output-document=-"
fi
help() {
sed -rn 's/^### ?//;T;p' "$0"
}
package_size () {
FOUND_PACKAGE=
if [ -z "$CHECK_INSTALLED" ]; then
SEARCH_PATTERN="Size"
else
SEARCH_PATTERN="Installed-Size"
fi
while IFS= read -r line; do
if [ "$line" = "Package: $2" ]; then
FOUND_PACKAGE=y
fi
if [ -n "$FOUND_PACKAGE" ]; then
case $line in
"$SEARCH_PATTERN"*)
echo "$line" | cut -d ' ' -f 2
break
;;
esac
fi
done < "$1"
}
compare_sizes () {
for PACKAGE in $PACKAGES; do
if [ "$PACKAGE" = "libc" ]; then
continue
fi
PACKAGE_FILE=$(find "$BIN_DIR/packages/$ARCH/" \
"$BIN_DIR/targets/$TARGET/$SUBTARGET/" \
-name "${PACKAGE}_*.ipk" 2>/dev/null | head -n1)
if [ -z "$PACKAGE_FILE" ]; then
continue
fi
if [ -z "$CHECK_INSTALLED" ]; then
SIZE_LOCAL=$(stat -c '%s' "$PACKAGE_FILE")
else
SIZE_LOCAL=$(tar tzvf "$PACKAGE_FILE" ./data.tar.gz | awk '{ print $3 }')
fi
SIZE_UPSTREAM=$(package_size "$TMP_INDEX" "$PACKAGE")
SIZE_DIFF="$((SIZE_LOCAL-SIZE_UPSTREAM))"
if [ "$SIZE_DIFF" -gt 0 ]; then
SIZE_DIFF="+$SIZE_DIFF"
fi
if [ -n "$SIZE_UPSTREAM" ]; then
echo "${SIZE_DIFF} ${SIZE_LOCAL} ${SIZE_UPSTREAM} $PACKAGE"
else
echo "$PACKAGE is missing upstream"
fi
done
}
if [ "$1" = "-h" ]; then
help
exit 0
fi
if [ "$1" = "-p" ]; then
CHECK_INSTALLED=
fi
echo "Compare packages of $TARGET/$SUBTARGET/$ARCH":
echo "$PACKAGES"
echo
echo "Checking configuration difference"
TMP_CONFIG=$(mktemp /tmp/config.XXXXXX)
sed -n 's/^ \+config \(.*\)/\1/p' config/Config-build.in config/Config-devel.in > "${TMP_CONFIG}-FOCUS"
sort .config | grep -f "${TMP_CONFIG}-FOCUS" | grep -v "^#" | sort > "${TMP_CONFIG}-LOCAL"
mv .config .config.bak
"$DOWNLOAD_METHOD" "$CONFIG_URL" > .config
make defconfig > /dev/null 2> /dev/null
grep -f "${TMP_CONFIG}-FOCUS" .config | grep -v "^#" | sort > "${TMP_CONFIG}-UPSTREAM"
mv .config.bak .config
echo
echo " --- start config diff ---"
diff -u "${TMP_CONFIG}-LOCAL" "${TMP_CONFIG}-UPSTREAM"
echo " --- end config diff ---"
rm "${TMP_CONFIG}-FOCUS" "${TMP_CONFIG}-UPSTREAM" "${TMP_CONFIG}-LOCAL"
echo
if [ -z "$CHECK_INSTALLED" ]; then
echo "Checking IPK package size"
else
echo "Checking installed size"
fi
echo
echo "Fetching latest package indexes..."
TMP_INDEX=$(mktemp /tmp/size_compare_package_index.XXXXXX)
"$DOWNLOAD_METHOD" "$TARGET_URL" | gzip -d > "$TMP_INDEX" || exit 1
"$DOWNLOAD_METHOD" "$PACKAGES_URL" | gzip -d >> "$TMP_INDEX" || exit 1
echo
echo "Comparing package sizes..."
echo "Change Local Remote Package"
compare_sizes | sort -g -r
rm "$TMP_INDEX"
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