1 files changed, 8 insertions, 1 deletions

diff --git a/utils/midpoint.c b/utils/midpoint.c
index c736143..60ad65c 100644
--- a/utils/midpoint.c
+++ b/utils/midpoint.c
@@ -4,7 +4,7 @@
 
 int main (int argc, char ** argv) {
 	if (argc < 3)
-		error_at_line(1, 0, __FILE__, __LINE__, "%s <bin|add|subtract|divide|midpoint> <a> [b]", S0(argv[0]));
+		error_at_line(1, 0, __FILE__, __LINE__, "%s <bin|add|subtract|divide|midpoint|closer> <a> [b] [t]", S0(argv[0]));
 	if (argv[1][0] == 'b' || argv[1][0] == 'B') {
 		unsigned char a[strlen(argv[2])/2+1];
 		a[strlen(argv[2])/2] = '\0';
@@ -38,6 +38,13 @@ int main (int argc, char ** argv) {
 	char out[41];
 	out[40] = '\0';
 	unsigned char r[20];
+	if (argv[1][0] == 'c' || argv[1][0] == 'C') {
+		if (!argv[4] || strlen(argv[4]) != 40)
+			error_at_line(4, 0, __FILE__, __LINE__, "(!t || strlen(t) != 40) && closer");
+		unsigned char t[20];
+		hex2bin(t, argv[4], 20);
+		return closer(a, b, t);
+	}
 	if (argv[1][0] == 'a' || argv[1][0] == 'A') {
 		memcpy(r, a, 20);
 		add(r, b);