Adding upstream version 3.4.upstream/3.4upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 139 insertions, 0 deletions

diff --git a/ntp.h b/ntp.h
new file mode 100644
index 0000000..7b7f361
--- /dev/null
+++ b/ntp.h
@@ -0,0 +1,139 @@
+/*
+  chronyd/chronyc - Programs for keeping computer clocks accurate.
+
+ **********************************************************************
+ * Copyright (C) Richard P. Curnow  1997-2003
+ * 
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ * 
+ **********************************************************************
+
+  =======================================================================
+
+  Header file containing common NTP bits and pieces
+  */
+
+#ifndef GOT_NTP_H
+#define GOT_NTP_H
+
+#include "sysincl.h"
+
+#include "hash.h"
+
+typedef struct {
+  uint32_t hi;
+  uint32_t lo;
+} NTP_int64;
+
+typedef uint32_t NTP_int32;
+
+/* The UDP port number used by NTP */
+#define NTP_PORT 123
+
+/* The NTP protocol version that we support */
+#define NTP_VERSION 4
+
+/* Maximum stratum number (infinity) */
+#define NTP_MAX_STRATUM 16
+
+/* The minimum valid length of an extension field */
+#define NTP_MIN_EXTENSION_LENGTH 16
+
+/* The maximum assumed length of all extension fields in received
+   packets (RFC 5905 doesn't specify a limit on length or number of
+   extension fields in one packet) */
+#define NTP_MAX_EXTENSIONS_LENGTH 1024
+
+/* The minimum and maximum supported length of MAC */
+#define NTP_MIN_MAC_LENGTH (4 + 16)
+#define NTP_MAX_MAC_LENGTH (4 + MAX_HASH_LENGTH)
+
+/* The maximum length of MAC in NTPv4 packets which allows deterministic
+   parsing of extension fields (RFC 7822) */
+#define NTP_MAX_V4_MAC_LENGTH (4 + 20)
+
+/* Type definition for leap bits */
+typedef enum {
+  LEAP_Normal = 0,
+  LEAP_InsertSecond = 1,
+  LEAP_DeleteSecond = 2,
+  LEAP_Unsynchronised = 3
+} NTP_Leap;
+
+typedef enum {
+  MODE_UNDEFINED = 0,
+  MODE_ACTIVE = 1,
+  MODE_PASSIVE = 2,
+  MODE_CLIENT = 3,
+  MODE_SERVER = 4,
+  MODE_BROADCAST = 5
+} NTP_Mode;
+
+typedef struct {
+  uint8_t lvm;
+  uint8_t stratum;
+  int8_t poll;
+  int8_t precision;
+  NTP_int32 root_delay;
+  NTP_int32 root_dispersion;
+  NTP_int32 reference_id;
+  NTP_int64 reference_ts;
+  NTP_int64 originate_ts;
+  NTP_int64 receive_ts;
+  NTP_int64 transmit_ts;
+
+  /* Optional extension fields, we don't send packets with them yet */
+  /* uint8_t extensions[] */
+
+  /* Optional message authentication code (MAC) */
+  NTP_int32 auth_keyid;
+  uint8_t auth_data[NTP_MAX_MAC_LENGTH - 4];
+} NTP_Packet;
+
+#define NTP_NORMAL_PACKET_LENGTH (int)offsetof(NTP_Packet, auth_keyid)
+
+/* The buffer used to hold a datagram read from the network */
+typedef struct {
+  NTP_Packet ntp_pkt;
+  uint8_t extensions[NTP_MAX_EXTENSIONS_LENGTH];
+} NTP_Receive_Buffer;
+
+/* Macros to work with the lvm field */
+#define NTP_LVM_TO_LEAP(lvm) (((lvm) >> 6) & 0x3)
+#define NTP_LVM_TO_VERSION(lvm) (((lvm) >> 3) & 0x7)
+#define NTP_LVM_TO_MODE(lvm) ((lvm) & 0x7)
+#define NTP_LVM(leap, version, mode) \
+  ((((leap) << 6) & 0xc0) | (((version) << 3) & 0x38) | ((mode) & 0x07))
+
+/* Special NTP reference IDs */
+#define NTP_REFID_UNSYNC 0x0UL
+#define NTP_REFID_LOCAL 0x7F7F0101UL /* 127.127.1.1 */
+#define NTP_REFID_SMOOTH 0x7F7F01FFUL /* 127.127.1.255 */
+
+/* Structure used to save NTP measurements.  time is the local time at which
+   the sample is to be considered to have been made and offset is the offset at
+   the time (positive indicates that the local clock is slow relative to the
+   source).  root_delay/root_dispersion include peer_delay/peer_dispersion. */
+typedef struct {
+  struct timespec time;
+  double offset;
+  double peer_delay;
+  double peer_dispersion;
+  double root_delay;
+  double root_dispersion;
+  int stratum;
+  NTP_Leap leap;
+} NTP_Sample;
+
+#endif /* GOT_NTP_H */