Virgin import of ntpd 4.0.98f

1 files changed, 59 insertions, 0 deletions

diff --git a/contrib/ntp/libntp/decodenetnum.c b/contrib/ntp/libntp/decodenetnum.c
new file mode 100644
index 0000000..a24e493
--- /dev/null
+++ b/contrib/ntp/libntp/decodenetnum.c
@@ -0,0 +1,59 @@
+/*
+ * 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 "ntp_stdlib.h"
+
+int
+decodenetnum(
+	const char *num,
+	u_int32 *netnum
+	)
+{
+	register const char *cp;
+	register char *bp;
+	register int i;
+	register int temp;
+	register int eos;
+	char buf[80];		/* will core dump on really stupid stuff */
+
+	cp = num;
+	*netnum = 0;
+
+	if (*cp == '[') {
+		eos = ']';
+		cp++;
+	} else {
+		eos = '\0';
+	}
+
+	for (i = 0; i < 4; i++) {
+		bp = buf;
+		while (isdigit((int)*cp))
+		    *bp++ = *cp++;
+		if (bp == buf)
+		    break;
+
+		if (i < 3) {
+			if (*cp++ != '.')
+			    break;
+		} else if (*cp != eos)
+		    break;
+
+		*bp = '\0';
+		temp = atoi(buf);
+		if (temp > 255)
+		    break;
+		*netnum <<= 8;
+		*netnum += temp;
+	}
+	
+	if (i < 4)
+	    return 0;
+	*netnum = htonl(*netnum);
+	return 1;
+}