add CNS V4 library to tree for compatibility use. Installs as libkrb4.a

git-svn-id: svn://anonsvn.mit.edu/krb5/trunk@5537 dc483132-0cff-0310-8789-dd5450dbe970

1 files changed, 151 insertions, 0 deletions

diff --git a/src/lib/krb4/mac_time.c b/src/lib/krb4/mac_time.c
new file mode 100644
index 0000000000..91f09e5aa7
--- /dev/null
+++ b/src/lib/krb4/mac_time.c
@@ -0,0 +1,151 @@
+/*
+ * mac_time.c
+ * (Originally time_stuff.c)
+ *
+ * Copyright 1989 by the Massachusetts Institute of Technology.
+ *
+ * For copying and distribution information, please see the file
+ * <mit-copyright.h>.
+ *
+ * Macintosh ooperating system interface for Kerberos.
+ */
+
+#include "mit-copyright.h"
+#define	DEFINE_SOCKADDR		/* For struct hostent, <netdb.h>, etc */
+#define NEED_TIME_H
+#include "krb.h"
+#include "des.h"
+#include "AddressXlation.h"	/* for ip_addr */
+
+#include <script.h>			/* Defines MachineLocation, used by getTimeZoneOffset */
+#include <ToolUtils.h>		/* Defines BitTst(), called by getTimeZoneOffset() */
+#include <OSUtils.h>		/* Defines GetDateTime */
+
+/* Mac Cincludes */
+#include <string.h>
+#include <stddef.h>
+
+
+  /*******************************
+  The Unix epoch is 1/1/70, the Mac epoch is 1/1/04.
+
+  70 - 4 = 66 year differential
+
+  Thus the offset is:
+
+  (66 yrs) * (365 days/yr) * (24 hours/day) * (60 mins/hour) * (60 secs/min)
+  plus
+  (17 leap days) * (24 hours/day) * (60 mins/hour) * (60 secs/min)
+
+  Don't forget the offset from GMT.
+  *******************************/
+
+
+/* returns the offset in hours between the mac local time and the GMT  */
+
+unsigned KRB_INT32
+getTimeZoneOffset()
+{
+	MachineLocation		macLocation;
+	long			gmtDelta;
+
+	macLocation.gmtFlags.gmtDelta=0L;
+	ReadLocation(&macLocation); 
+	gmtDelta=macLocation.gmtFlags.gmtDelta & 0x00FFFFFF;
+	if (BitTst((void *)&gmtDelta,23L))	gmtDelta |= 0xFF000000;
+	gmtDelta /= 3600L;
+	return(gmtDelta);
+}
+
+
+/* Returns the GMT in seconds using the Unix epoch, ie. Net time */
+
+unsigned KRB_INT32 gettimeofdaynet_no_offset()
+{
+	time_t the_time;
+	
+	GetDateTime (&the_time);
+	the_time = the_time - 
+		((66 * 365 * 24 * 60 * 60) + 
+		      (17 *  24 * 60 * 60) +
+           (getTimeZoneOffset() * 60 * 60));
+	return the_time;
+}
+
+
+
+int	
+gettimeofdaynet (struct timeval *tp, struct timezone *tz)
+{ 
+	tp->tv_sec = gettimeofdaynet_no_offset();
+	return 0;
+}
+
+
+#if 0
+
+int	
+gettimeofdaynet (struct timeval *tp, struct timezone *tz)
+{
+	int result;
+	
+	if (!net_got_offset)
+		result = get_net_offset();
+	else result = 0;
+	
+	time ((time_t *) &(tp->tv_sec));
+
+	tp->tv_sec = tp->tv_sec - (66 * 365 * 24 * 60 * 60
+            + 17 * 60 * 60 * 24) + net_offset;
+
+	return (result);
+}
+
+
+#define TIME_PORT 37
+#define TM_OFFSET 2208988800
+
+/*
+ *
+ *   get_net_offset () -- Use UDP time protocol to figure out the
+ *	offset between what the Mac thinks the time is an what
+ *	the network thinks.
+ *
+ */
+int
+get_net_offset()
+{
+     time_t tv;
+     char buf[512],ts[256];
+     long *nettime;
+     int attempts, cc, time_port;
+     long unixtime;
+	 char	realm[REALM_SZ];
+	 ip_addr	fromaddr;
+	 unsigned short	fromport;
+	 int result;
+	 
+     nettime = (long *)buf;
+	 time_port = TIME_PORT;
+
+	 cc = sizeof(buf);
+	 result = hosts_send_recv(ts, 1, buf, &cc, "", time_port);
+     time (&tv);
+	 
+	 if (result!=KSUCCESS || cc<4) {
+	 	net_offset = 0;
+	 	if (!result) result = 100;
+	 	return result;
+	 }
+						
+     unixtime = (long) ntohl(*nettime) - TM_OFFSET;
+
+     tv  -= 66 * 365 * 24 * 60 * 60
+	  + 17 * 60 * 60 * 24;			/* Convert to unix time w/o offset */
+     net_offset = unixtime - tv;
+     net_got_offset = 1;
+     
+     return 0;
+}
+
+#endif