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#!/bin/sh
OPKG_KEYS="${OPKG_KEYS:-/etc/opkg/keys}"
usage() {
cat <<EOF
Usage: $0 <command> <arguments...>
Commands:
add <file>: Add keyfile <file> to opkg trusted keys
remove <file>: Remove keyfile matching <file> from opkg trusted keys
verify <sigfile> <list>: Check list file <list> against signature file <sigfile>
EOF
exit 1
}
opkg_key_verify() {
local sigfile="$1"
local msgfile="$2"
(
zcat "$msgfile" 2>/dev/null ||
cat "$msgfile" 2>/dev/null
) | usign -V -P "$OPKG_KEYS" -q -x "$sigfile" -m -
}
opkg_key_add() {
local key="$1"
[ -n "$key" ] || usage
[ -f "$key" ] || echo "Cannot open file $1"
local fingerprint="$(usign -F -p "$key")"
mkdir -p "$OPKG_KEYS"
cp "$key" "$OPKG_KEYS/$fingerprint"
}
opkg_key_remove() {
local key="$1"
[ -n "$key" ] || usage
[ -f "$key" ] || echo "Cannot open file $1"
local fingerprint="$(usign -F -p "$key")"
rm -f "$OPKG_KEYS/$fingerprint"
}
case "$1" in
add)
shift
opkg_key_add "$@"
;;
remove)
shift
opkg_key_remove "$@"
;;
verify)
shift
opkg_key_verify "$@"
;;
*) usage ;;
esac
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