1 files changed, 40 insertions, 0 deletions
diff --git a/libntp/decodenetnum.c b/libntp/decodenetnum.c
new file mode 100644
index 0000000..4accf4a
--- /dev/null
+++ b/libntp/decodenetnum.c
@@ -0,0 +1,40 @@
+/*
+ * decodenetnum - return a net number (this is crude, but careful)
+ */
+#include <sys/types.h>
+#include <ctype.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <netdb.h>
+
+#include "ntp_stdlib.h"
+
+int
+decodenetnum(
+	const char *num,
+	struct sockaddr_storage *netnum
+	)
+{
+	struct addrinfo hints, *ai = NULL;
+	register int err, i;
+	register const char *cp;
+	char name[80];
+
+	cp = num;
+
+	if (*cp == '[') {
+		cp++;
+		for (i = 0; *cp != ']'; cp++, i++)
+			name[i] = *cp;
+	name[i] = '\0';
+	num = name; 
+	}
+	memset(&hints, 0, sizeof(struct addrinfo));
+	hints.ai_flags = AI_NUMERICHOST;
+	err = getaddrinfo(num, NULL, &hints, &ai);
+	if (err != 0)
+		return 0;
+	memcpy(netnum, (struct sockaddr_storage *)ai->ai_addr, ai->ai_addrlen); 
+	freeaddrinfo(ai);
+	return 1;
+}