1 files changed, 28 insertions, 0 deletions
diff --git a/common.sh b/common.sh
new file mode 100644
index 0000000..d07a69f
--- /dev/null
+++ b/common.sh
@@ -0,0 +1,28 @@
+open_db () {
+	cat bangbang - | nc whois.radb.net 43
+}
+
+extract_answer () {
+	set -e
+	local c
+	local l
+	local eot
+
+	while read l
+	do
+		c="${l:0:1}"
+
+		if [ "$c" == "A" ]; then
+			c="${l:1}"
+			read -N "$c" l
+			# consume "C"
+			read eot && [ "$eot" == "C" ] || echo "Protocol error" >&2 || exit 1
+			printf '%s\0' "$l"
+		elif [ "$c" == "%" ]; then
+			read
+			printf '\0'
+		elif [ "$c" == "D" ]; then
+			printf '\0'
+		fi
+	done
+}