openwrt/scripts/ipkg-build

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#!/bin/sh
# ipkg-build -- construct a .ipk from a directory
# Carl Worth <cworth@east.isi.edu>
# based on a script by Steve Redler IV, steve@sr-tech.com 5-21-2001
# 2003-04-25 rea@sr.unh.edu
# Updated to work on Familiar Pre0.7rc1, with busybox tar.
# Note it Requires: binutils-ar (since the busybox ar can't create)
# For UID debugging it needs a better "find".
set -e
version=1.0
FIND="$(command -v find)"
FIND="${FIND:-$(command -v gfind)}"
TAR="${TAR:-$(command -v tar)}"
# try to use fixed source epoch
if [ -n "$PKG_SOURCE_DATE_EPOCH" ]; then
TIMESTAMP=$(date --date="@$PKG_SOURCE_DATE_EPOCH")
elif [ -n "$SOURCE_DATE_EPOCH" ]; then
TIMESTAMP=$(date --date="@$SOURCE_DATE_EPOCH")
else
TIMESTAMP=$(date)
fi
ipkg_extract_value() {
sed -e "s/^[^:]*:[[:space:]]*//"
}
required_field() {
field=$1
grep "^$field:" < "$CONTROL/control" | ipkg_extract_value
}
pkg_appears_sane() {
local pkg_dir="$1"
local owd="$PWD"
cd "$pkg_dir"
PKG_ERROR=0
pkg="$(required_field Package)"
version="$(required_field Version | sed 's/Version://; s/^.://g;')"
arch="$(required_field Architecture)"
if echo "$pkg" | grep '[^a-zA-Z0-9_.+-]'; then
echo "*** Error: Package name $name contains illegal characters, (other than [a-z0-9.+-])" >&2
PKG_ERROR=1;
fi
if [ -f "$CONTROL/conffiles" ]; then
rm -f "$CONTROL/conffiles.resolved"
for cf in $($FIND $(sed -e "s!^/!$pkg_dir/!" "$CONTROL/conffiles") -type f); do
echo "${cf#$pkg_dir}" >> "$CONTROL/conffiles.resolved"
done
rm "$CONTROL"/conffiles
if [ -f "$CONTROL"/conffiles.resolved ]; then
LC_ALL=C sort -o "$CONTROL"/conffiles "$CONTROL"/conffiles.resolved
rm "$CONTROL"/conffiles.resolved
chmod 0644 "$CONTROL"/conffiles
fi
fi
cd "$owd"
return $PKG_ERROR
}
resolve_file_mode_id() {
local var=$1 type=$2 name=$3 id
case "$name" in
root)
id=0
;;
*[!0-9]*)
id=$(sed -ne "s#^$type $name \\([0-9]\\+\\)\\b.*\$#\\1#p" "$TOPDIR/tmp/.packageusergroup" 2>/dev/null)
;;
*)
id=$name
;;
esac
export "$var=$id"
[ -n "$id" ]
}
###
# ipkg-build "main"
###
file_modes=""
usage="Usage: $0 [-v] [-h] [-m] <pkg_directory> [<destination_directory>]"
while getopts "hvm:" opt; do
case $opt in
v ) echo "$version"
exit 0
;;
h ) echo "$usage" >&2 ;;
m ) file_modes=$OPTARG ;;
\? ) echo "$usage" >&2
esac
done
shift $((OPTIND - 1))
# continue on to process additional arguments
case $# in
1)
dest_dir=$PWD
;;
2)
dest_dir=$2
if [ "$dest_dir" = "." ] || [ "$dest_dir" = "./" ] ; then
dest_dir=$PWD
fi
;;
*)
echo "$usage" >&2
exit 1
;;
esac
pkg_dir="$(realpath "$1")"
if [ ! -d "$pkg_dir" ]; then
echo "*** Error: Directory $pkg_dir does not exist" >&2
exit 1
fi
# CONTROL is second so that it takes precedence
CONTROL=
[ -d "$pkg_dir"/CONTROL ] && CONTROL=CONTROL
if [ -z "$CONTROL" ]; then
echo "*** Error: Directory $pkg_dir has no CONTROL subdirectory." >&2
exit 1
fi
if ! pkg_appears_sane "$pkg_dir"; then
echo >&2
echo "ipkg-build: Please fix the above errors and try again." >&2
exit 1
fi
tmp_dir=$dest_dir/IPKG_BUILD.$$
mkdir "$tmp_dir"
echo $CONTROL > "$tmp_dir"/tarX
cd "$pkg_dir"
for file_mode in $file_modes; do
case $file_mode in
/*:*:*:*)
;;
*)
echo "ERROR: file modes must use absolute path and contain user:group:mode"
echo "$file_mode"
exit 1
;;
esac
mode=${file_mode##*:}; path=${file_mode%:*}
group=${path##*:}; path=${path%:*}
user=${path##*:}; path=${path%:*}
if ! resolve_file_mode_id uid user "$user"; then
echo "ERROR: unable to resolve uid of $user" >&2
exit 1
fi
if ! resolve_file_mode_id gid group "$group"; then
echo "ERROR: unable to resolve gid of $group" >&2
exit 1
fi
chown "$uid:$gid" "$pkg_dir/$path"
chmod "$mode" "$pkg_dir/$path"
done
$TAR -X "$tmp_dir"/tarX --format=gnu --sort=name -cpf - --mtime="$TIMESTAMP" . | gzip -n - > "$tmp_dir"/data.tar.gz
installed_size=$(stat -c "%s" "$tmp_dir"/data.tar.gz)
sed -i -e "s/^Installed-Size: .*/Installed-Size: $installed_size/" \
"$pkg_dir"/$CONTROL/control
( cd "$pkg_dir"/$CONTROL && $TAR --format=gnu --sort=name -cf - --mtime="$TIMESTAMP" . | gzip -n - > "$tmp_dir"/control.tar.gz )
rm "$tmp_dir"/tarX
echo "2.0" > "$tmp_dir"/debian-binary
pkg_file=$dest_dir/${pkg}_${version}_${arch}.ipk
rm -f "$pkg_file"
( cd "$tmp_dir" && $TAR --format=gnu --sort=name -cf - --mtime="$TIMESTAMP" ./debian-binary ./data.tar.gz ./control.tar.gz | gzip -n - > "$pkg_file" )
rm "$tmp_dir"/debian-binary "$tmp_dir"/data.tar.gz "$tmp_dir"/control.tar.gz
rmdir "$tmp_dir"
echo "Packaged contents of $pkg_dir into $pkg_file"