Adding upstream version 4.0.upstream/4.0upstream

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

1 files changed, 816 insertions, 0 deletions

diff --git a/candm.h b/candm.h
new file mode 100644
index 0000000..7c36779
--- /dev/null
+++ b/candm.h
@@ -0,0 +1,816 @@
+/*
+  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.
+ * 
+ **********************************************************************
+
+  =======================================================================
+
+  Definitions for the network protocol used for command and monitoring
+  of the timeserver.
+
+  */
+
+#ifndef GOT_CANDM_H
+#define GOT_CANDM_H
+
+#include "sysincl.h"
+#include "addressing.h"
+
+/* This is the default port to use for CANDM, if no alternative is
+   defined */
+#define DEFAULT_CANDM_PORT 323
+
+/* Request codes */
+#define REQ_NULL 0
+#define REQ_ONLINE 1
+#define REQ_OFFLINE 2
+#define REQ_BURST 3
+#define REQ_MODIFY_MINPOLL 4
+#define REQ_MODIFY_MAXPOLL 5
+#define REQ_DUMP 6
+#define REQ_MODIFY_MAXDELAY 7
+#define REQ_MODIFY_MAXDELAYRATIO 8
+#define REQ_MODIFY_MAXUPDATESKEW 9
+#define REQ_LOGON 10
+#define REQ_SETTIME 11
+#define REQ_LOCAL 12
+#define REQ_MANUAL 13
+#define REQ_N_SOURCES 14
+#define REQ_SOURCE_DATA 15
+#define REQ_REKEY 16
+#define REQ_ALLOW 17
+#define REQ_ALLOWALL 18
+#define REQ_DENY 19
+#define REQ_DENYALL 20
+#define REQ_CMDALLOW 21
+#define REQ_CMDALLOWALL 22
+#define REQ_CMDDENY 23
+#define REQ_CMDDENYALL 24
+#define REQ_ACCHECK 25
+#define REQ_CMDACCHECK 26
+#define REQ_ADD_SERVER 27
+#define REQ_ADD_PEER 28
+#define REQ_DEL_SOURCE 29
+#define REQ_WRITERTC 30
+#define REQ_DFREQ 31
+#define REQ_DOFFSET 32
+#define REQ_TRACKING 33
+#define REQ_SOURCESTATS 34
+#define REQ_RTCREPORT 35
+#define REQ_TRIMRTC 36
+#define REQ_CYCLELOGS 37
+#define REQ_SUBNETS_ACCESSED 38
+#define REQ_CLIENT_ACCESSES 39
+#define REQ_CLIENT_ACCESSES_BY_INDEX 40
+#define REQ_MANUAL_LIST 41
+#define REQ_MANUAL_DELETE 42
+#define REQ_MAKESTEP 43
+#define REQ_ACTIVITY 44
+#define REQ_MODIFY_MINSTRATUM 45
+#define REQ_MODIFY_POLLTARGET 46
+#define REQ_MODIFY_MAXDELAYDEVRATIO 47
+#define REQ_RESELECT 48
+#define REQ_RESELECTDISTANCE 49
+#define REQ_MODIFY_MAKESTEP 50
+#define REQ_SMOOTHING 51
+#define REQ_SMOOTHTIME 52
+#define REQ_REFRESH 53
+#define REQ_SERVER_STATS 54
+#define REQ_CLIENT_ACCESSES_BY_INDEX2 55
+#define REQ_LOCAL2 56
+#define REQ_NTP_DATA 57
+#define REQ_ADD_SERVER2 58
+#define REQ_ADD_PEER2 59
+#define REQ_ADD_SERVER3 60
+#define REQ_ADD_PEER3 61
+#define REQ_SHUTDOWN 62
+#define REQ_ONOFFLINE 63
+#define REQ_ADD_SOURCE 64
+#define REQ_NTP_SOURCE_NAME 65
+#define REQ_RESET_SOURCES 66
+#define REQ_AUTH_DATA 67
+#define REQ_CLIENT_ACCESSES_BY_INDEX3 68
+#define REQ_SELECT_DATA 69
+#define REQ_RELOAD_SOURCES 70
+#define N_REQUEST_TYPES 71
+
+/* Structure used to exchange timespecs independent of time_t size */
+typedef struct {
+  uint32_t tv_sec_high;
+  uint32_t tv_sec_low;
+  uint32_t tv_nsec;
+} Timespec;
+
+/* This is used in tv_sec_high for 32-bit timestamps */
+#define TV_NOHIGHSEC 0x7fffffff
+
+/* 32-bit floating-point format consisting of 7-bit signed exponent
+   and 25-bit signed coefficient without hidden bit.
+   The result is calculated as: 2^(exp - 25) * coef */
+typedef struct {
+  int32_t f;
+} Float;
+
+/* The EOR (end of record) fields are used by the offsetof operator in
+   pktlength.c, to get the number of bytes that ought to be
+   transmitted for each packet type. */
+
+typedef struct {
+  int32_t EOR;
+} REQ_Null;
+
+typedef struct {
+  IPAddr mask;
+  IPAddr address;
+  int32_t EOR;
+} REQ_Online;
+
+typedef struct {
+  IPAddr mask;
+  IPAddr address;
+  int32_t EOR;
+} REQ_Offline;
+
+typedef struct {
+  IPAddr mask;
+  IPAddr address;
+  int32_t n_good_samples;
+  int32_t n_total_samples;
+  int32_t EOR;
+} REQ_Burst;
+
+typedef struct {
+  IPAddr address;
+  int32_t new_minpoll;
+  int32_t EOR;
+} REQ_Modify_Minpoll;
+
+typedef struct {
+  IPAddr address;
+  int32_t new_maxpoll;
+  int32_t EOR;
+} REQ_Modify_Maxpoll;
+
+typedef struct {
+  int32_t pad;
+  int32_t EOR;
+} REQ_Dump;
+
+typedef struct {
+  IPAddr address;
+  Float new_max_delay;
+  int32_t EOR;
+} REQ_Modify_Maxdelay;
+
+typedef struct {
+  IPAddr address;
+  Float new_max_delay_ratio;
+  int32_t EOR;
+} REQ_Modify_Maxdelayratio;
+
+typedef struct {
+  IPAddr address;
+  Float new_max_delay_dev_ratio;
+  int32_t EOR;
+} REQ_Modify_Maxdelaydevratio;
+
+typedef struct {
+  IPAddr address;
+  int32_t new_min_stratum;
+  int32_t EOR;
+} REQ_Modify_Minstratum;
+
+typedef struct {
+  IPAddr address;
+  int32_t new_poll_target;
+  int32_t EOR;
+} REQ_Modify_Polltarget;
+
+typedef struct {
+  Float new_max_update_skew;
+  int32_t EOR;
+} REQ_Modify_Maxupdateskew;
+
+typedef struct {
+  int32_t limit;
+  Float threshold;
+  int32_t EOR;
+} REQ_Modify_Makestep;
+
+typedef struct {
+  Timespec ts;
+  int32_t EOR;
+} REQ_Logon;
+
+typedef struct {
+  Timespec ts;
+  int32_t EOR;
+} REQ_Settime;
+
+typedef struct {
+  int32_t on_off;
+  int32_t stratum;
+  Float distance;
+  int32_t orphan;
+  int32_t EOR;
+} REQ_Local;
+
+typedef struct {
+  int32_t option;
+  int32_t EOR;
+} REQ_Manual;
+
+typedef struct {
+  int32_t index;
+  int32_t EOR;
+} REQ_Source_Data;
+
+typedef struct {
+  IPAddr ip;
+  int32_t subnet_bits;
+  int32_t EOR;
+} REQ_Allow_Deny;
+
+typedef struct {
+  IPAddr ip;
+  int32_t EOR;
+} REQ_Ac_Check;
+
+/* Source types in NTP source requests */
+#define REQ_ADDSRC_SERVER 1
+#define REQ_ADDSRC_PEER 2
+#define REQ_ADDSRC_POOL 3
+
+/* Flags used in NTP source requests */
+#define REQ_ADDSRC_ONLINE 0x1
+#define REQ_ADDSRC_AUTOOFFLINE 0x2
+#define REQ_ADDSRC_IBURST 0x4
+#define REQ_ADDSRC_PREFER 0x8
+#define REQ_ADDSRC_NOSELECT 0x10
+#define REQ_ADDSRC_TRUST 0x20
+#define REQ_ADDSRC_REQUIRE 0x40
+#define REQ_ADDSRC_INTERLEAVED 0x80
+#define REQ_ADDSRC_BURST 0x100
+#define REQ_ADDSRC_NTS 0x200
+
+typedef struct {
+  uint32_t type;
+  uint8_t name[256];
+  uint32_t port;
+  int32_t minpoll;
+  int32_t maxpoll;
+  int32_t presend_minpoll;
+  uint32_t min_stratum;
+  uint32_t poll_target;
+  uint32_t version;
+  uint32_t max_sources;
+  int32_t min_samples;
+  int32_t max_samples;
+  uint32_t authkey;
+  uint32_t nts_port;
+  Float max_delay;
+  Float max_delay_ratio;
+  Float max_delay_dev_ratio;
+  Float min_delay;
+  Float asymmetry;
+  Float offset;
+  uint32_t flags;
+  int32_t filter_length;
+  uint32_t reserved[3];
+  int32_t EOR;
+} REQ_NTP_Source;
+
+typedef struct {
+  IPAddr ip_addr;
+  int32_t EOR;
+} REQ_Del_Source;
+
+typedef struct {
+  Float dfreq;
+  int32_t EOR;
+} REQ_Dfreq;
+
+typedef struct {
+  int32_t sec;
+  int32_t usec;
+  int32_t EOR;
+} REQ_Doffset;
+
+typedef struct {
+  uint32_t index;
+  int32_t EOR;
+} REQ_Sourcestats;
+
+/* This is based on the response size rather than the
+   request size */
+#define MAX_CLIENT_ACCESSES 8
+
+typedef struct {
+  uint32_t first_index;
+  uint32_t n_clients;
+  uint32_t min_hits;
+  uint32_t reset;
+  int32_t EOR;
+} REQ_ClientAccessesByIndex;
+
+typedef struct {
+  int32_t index;
+  int32_t EOR;
+} REQ_ManualDelete;
+
+typedef struct {
+  Float distance;
+  int32_t EOR;
+} REQ_ReselectDistance;
+
+#define REQ_SMOOTHTIME_RESET 0
+#define REQ_SMOOTHTIME_ACTIVATE 1
+
+typedef struct {
+  int32_t option;
+  int32_t EOR;
+} REQ_SmoothTime;
+
+typedef struct {
+  IPAddr ip_addr;
+  int32_t EOR;
+} REQ_NTPData;
+
+typedef struct {
+  IPAddr ip_addr;
+  int32_t EOR;
+} REQ_NTPSourceName;
+
+typedef struct {
+  IPAddr ip_addr;
+  int32_t EOR;
+} REQ_AuthData;
+
+typedef struct {
+  uint32_t index;
+  int32_t EOR;
+} REQ_SelectData;
+
+/* ================================================== */
+
+#define PKT_TYPE_CMD_REQUEST 1
+#define PKT_TYPE_CMD_REPLY 2
+
+/* This version number needs to be incremented whenever the packet
+   size and/or the format of any of the existing messages is changed.
+   Other changes, e.g. new command types, should be handled cleanly by
+   client.c and cmdmon.c anyway, so the version can stay the same.
+   
+   Version 1 : original version with fixed size packets
+
+   Version 2 : both command and reply packet sizes made capable of
+   being variable length.
+
+   Version 3 : NTP_Source message lengthened (auto_offline)
+
+   Version 4 : IPv6 addressing added, 64-bit time values, sourcestats 
+   and tracking reports extended, added flags to NTP source request,
+   trimmed source report, replaced fixed-point format with floating-point
+   and used also instead of integer microseconds, new commands: modify stratum,
+   modify polltarget, modify maxdelaydevratio, reselect, reselectdistance
+
+   Version 5 : auth data moved to the end of the packet to allow hashes with
+   different sizes, extended sources, tracking and activity reports, dropped
+   subnets accessed and client accesses
+
+   Version 6 : added padding to requests to prevent amplification attack,
+   changed maximum number of samples in manual list to 16, new commands: modify
+   makestep, smoothing, smoothtime
+
+   Support for authentication was removed later in version 6 of the protocol
+   and commands that required authentication are allowed only locally over Unix
+   domain socket.
+
+   Version 6 (no authentication) : changed format of client accesses by index
+   (using new request/reply types) and manual timestamp, added new fields and
+   flags to NTP source request and report, made length of manual list constant,
+   added new commands: authdata, ntpdata, onoffline, refresh, reset,
+   selectdata, serverstats, shutdown, sourcename
+ */
+
+#define PROTO_VERSION_NUMBER 6
+
+/* The oldest protocol versions that are compatible enough with the current
+   version to report a version mismatch for the server and the client */
+#define PROTO_VERSION_MISMATCH_COMPAT_SERVER 5
+#define PROTO_VERSION_MISMATCH_COMPAT_CLIENT 4
+
+/* The first protocol version using padding in requests */
+#define PROTO_VERSION_PADDING 6
+
+/* The maximum length of padding in request packet, currently
+   defined by CLIENT_ACCESSES_BY_INDEX3 */
+#define MAX_PADDING_LENGTH 484
+
+/* ================================================== */
+
+typedef struct {
+  uint8_t version; /* Protocol version */
+  uint8_t pkt_type; /* What sort of packet this is */
+  uint8_t res1;
+  uint8_t res2;
+  uint16_t command; /* Which command is being issued */
+  uint16_t attempt; /* How many resends the client has done
+                             (count up from zero for same sequence
+                             number) */
+  uint32_t sequence; /* Client's sequence number */
+  uint32_t pad1;
+  uint32_t pad2;
+
+  union {
+    REQ_Null null;
+    REQ_Online online;
+    REQ_Offline offline;
+    REQ_Burst burst;
+    REQ_Modify_Minpoll modify_minpoll;
+    REQ_Modify_Maxpoll modify_maxpoll;
+    REQ_Dump dump;
+    REQ_Modify_Maxdelay modify_maxdelay;
+    REQ_Modify_Maxdelayratio modify_maxdelayratio;
+    REQ_Modify_Maxdelaydevratio modify_maxdelaydevratio;
+    REQ_Modify_Minstratum modify_minstratum;
+    REQ_Modify_Polltarget modify_polltarget;
+    REQ_Modify_Maxupdateskew modify_maxupdateskew;
+    REQ_Modify_Makestep modify_makestep;
+    REQ_Logon logon;
+    REQ_Settime settime;
+    REQ_Local local;
+    REQ_Manual manual;
+    REQ_Source_Data source_data;
+    REQ_Allow_Deny allow_deny;
+    REQ_Ac_Check ac_check;
+    REQ_NTP_Source ntp_source;
+    REQ_Del_Source del_source;
+    REQ_Dfreq dfreq;
+    REQ_Doffset doffset;
+    REQ_Sourcestats sourcestats;
+    REQ_ClientAccessesByIndex client_accesses_by_index;
+    REQ_ManualDelete manual_delete;
+    REQ_ReselectDistance reselect_distance;
+    REQ_SmoothTime smoothtime;
+    REQ_NTPData ntp_data;
+    REQ_NTPSourceName ntp_source_name;
+    REQ_AuthData auth_data;
+    REQ_SelectData select_data;
+  } data; /* Command specific parameters */
+
+  /* Padding used to prevent traffic amplification.  It only defines the
+     maximum size of the packet, there is no hole after the data field. */
+  uint8_t padding[MAX_PADDING_LENGTH];
+
+} CMD_Request;
+
+/* ================================================== */
+/* Authority codes for command types */
+
+#define PERMIT_OPEN 0
+#define PERMIT_LOCAL 1
+#define PERMIT_AUTH 2
+
+/* ================================================== */
+
+/* Reply codes */
+#define RPY_NULL 1
+#define RPY_N_SOURCES 2
+#define RPY_SOURCE_DATA 3
+#define RPY_MANUAL_TIMESTAMP 4
+#define RPY_TRACKING 5
+#define RPY_SOURCESTATS 6
+#define RPY_RTC 7
+#define RPY_SUBNETS_ACCESSED 8
+#define RPY_CLIENT_ACCESSES 9
+#define RPY_CLIENT_ACCESSES_BY_INDEX 10
+#define RPY_MANUAL_LIST 11
+#define RPY_ACTIVITY 12
+#define RPY_SMOOTHING 13
+#define RPY_SERVER_STATS 14
+#define RPY_CLIENT_ACCESSES_BY_INDEX2 15
+#define RPY_NTP_DATA 16
+#define RPY_MANUAL_TIMESTAMP2 17
+#define RPY_MANUAL_LIST2 18
+#define RPY_NTP_SOURCE_NAME 19
+#define RPY_AUTH_DATA 20
+#define RPY_CLIENT_ACCESSES_BY_INDEX3 21
+#define RPY_SERVER_STATS2 22
+#define RPY_SELECT_DATA 23
+#define N_REPLY_TYPES 24
+
+/* Status codes */
+#define STT_SUCCESS 0
+#define STT_FAILED 1
+#define STT_UNAUTH 2
+#define STT_INVALID 3
+#define STT_NOSUCHSOURCE 4
+#define STT_INVALIDTS 5
+#define STT_NOTENABLED 6
+#define STT_BADSUBNET 7
+#define STT_ACCESSALLOWED 8
+#define STT_ACCESSDENIED 9
+/* Deprecated */
+#define STT_NOHOSTACCESS 10
+#define STT_SOURCEALREADYKNOWN 11
+#define STT_TOOMANYSOURCES 12
+#define STT_NORTC 13
+#define STT_BADRTCFILE 14
+#define STT_INACTIVE 15
+#define STT_BADSAMPLE 16
+#define STT_INVALIDAF 17
+#define STT_BADPKTVERSION 18
+#define STT_BADPKTLENGTH 19
+#define STT_INVALIDNAME 21
+
+typedef struct {
+  int32_t EOR;
+} RPY_Null;
+
+typedef struct {
+  uint32_t n_sources;
+  int32_t EOR;
+} RPY_N_Sources;
+
+#define RPY_SD_MD_CLIENT 0
+#define RPY_SD_MD_PEER   1
+#define RPY_SD_MD_REF    2
+
+#define RPY_SD_ST_SELECTED 0
+#define RPY_SD_ST_NONSELECTABLE 1
+#define RPY_SD_ST_FALSETICKER 2
+#define RPY_SD_ST_JITTERY 3
+#define RPY_SD_ST_UNSELECTED 4
+#define RPY_SD_ST_SELECTABLE 5
+
+typedef struct {
+  IPAddr ip_addr;
+  int16_t poll;
+  uint16_t stratum;
+  uint16_t state;
+  uint16_t mode;
+  uint16_t flags;
+  uint16_t reachability;
+  uint32_t  since_sample;
+  Float orig_latest_meas;
+  Float latest_meas;
+  Float latest_meas_err;
+  int32_t EOR;
+} RPY_Source_Data;
+
+typedef struct {
+  uint32_t ref_id;
+  IPAddr ip_addr;
+  uint16_t stratum;
+  uint16_t leap_status;
+  Timespec ref_time;
+  Float current_correction;
+  Float last_offset;
+  Float rms_offset;
+  Float freq_ppm;
+  Float resid_freq_ppm;
+  Float skew_ppm;
+  Float root_delay;
+  Float root_dispersion;
+  Float last_update_interval;
+  int32_t EOR;
+} RPY_Tracking;
+
+typedef struct {
+  uint32_t ref_id;
+  IPAddr ip_addr;
+  uint32_t n_samples;
+  uint32_t n_runs;
+  uint32_t span_seconds;
+  Float sd;
+  Float resid_freq_ppm;
+  Float skew_ppm;
+  Float est_offset;
+  Float est_offset_err;
+  int32_t EOR;
+} RPY_Sourcestats;
+
+typedef struct {
+  Timespec ref_time;
+  uint16_t n_samples;
+  uint16_t n_runs;
+  uint32_t span_seconds;
+  Float rtc_seconds_fast;
+  Float rtc_gain_rate_ppm;
+  int32_t EOR;
+} RPY_Rtc;
+
+typedef struct {
+  Float offset;
+  Float dfreq_ppm;
+  Float new_afreq_ppm;
+  int32_t EOR;
+} RPY_ManualTimestamp;
+
+typedef struct {
+  IPAddr ip;
+  uint32_t ntp_hits;
+  uint32_t nke_hits;
+  uint32_t cmd_hits;
+  uint32_t ntp_drops;
+  uint32_t nke_drops;
+  uint32_t cmd_drops;
+  int8_t ntp_interval;
+  int8_t nke_interval;
+  int8_t cmd_interval;
+  int8_t ntp_timeout_interval;
+  uint32_t last_ntp_hit_ago;
+  uint32_t last_nke_hit_ago;
+  uint32_t last_cmd_hit_ago;
+} RPY_ClientAccesses_Client;
+
+typedef struct {
+  uint32_t n_indices;      /* how many indices there are in the server's table */
+  uint32_t next_index;     /* the index 1 beyond those processed on this call */
+  uint32_t n_clients;      /* the number of valid entries in the following array */
+  RPY_ClientAccesses_Client clients[MAX_CLIENT_ACCESSES];
+  int32_t EOR;
+} RPY_ClientAccessesByIndex;
+
+typedef struct {
+  uint32_t ntp_hits;
+  uint32_t nke_hits;
+  uint32_t cmd_hits;
+  uint32_t ntp_drops;
+  uint32_t nke_drops;
+  uint32_t cmd_drops;
+  uint32_t log_drops;
+  uint32_t ntp_auth_hits;
+  int32_t EOR;
+} RPY_ServerStats;
+
+#define MAX_MANUAL_LIST_SAMPLES 16
+
+typedef struct {
+  Timespec when;
+  Float slewed_offset;
+  Float orig_offset;
+  Float residual;
+} RPY_ManualListSample;
+
+typedef struct {
+  uint32_t n_samples;
+  RPY_ManualListSample samples[MAX_MANUAL_LIST_SAMPLES];
+  int32_t EOR;
+} RPY_ManualList;
+
+typedef struct {
+  int32_t online;
+  int32_t offline;
+  int32_t burst_online;
+  int32_t burst_offline;
+  int32_t unresolved;
+  int32_t EOR;
+} RPY_Activity;
+
+#define RPY_SMT_FLAG_ACTIVE 0x1
+#define RPY_SMT_FLAG_LEAPONLY 0x2
+
+typedef struct {
+  uint32_t flags;
+  Float offset;
+  Float freq_ppm;
+  Float wander_ppm;
+  Float last_update_ago;
+  Float remaining_time;
+  int32_t EOR;
+} RPY_Smoothing;
+
+#define RPY_NTP_FLAGS_TESTS 0x3ff
+#define RPY_NTP_FLAG_INTERLEAVED 0x4000
+#define RPY_NTP_FLAG_AUTHENTICATED 0x8000
+
+typedef struct {
+  IPAddr remote_addr;
+  IPAddr local_addr;
+  uint16_t remote_port;
+  uint8_t leap;
+  uint8_t version;
+  uint8_t mode;
+  uint8_t stratum;
+  int8_t poll;
+  int8_t precision;
+  Float root_delay;
+  Float root_dispersion;
+  uint32_t ref_id;
+  Timespec ref_time;
+  Float offset;
+  Float peer_delay;
+  Float peer_dispersion;
+  Float response_time;
+  Float jitter_asymmetry;
+  uint16_t flags;
+  uint8_t tx_tss_char;
+  uint8_t rx_tss_char;
+  uint32_t total_tx_count;
+  uint32_t total_rx_count;
+  uint32_t total_valid_count;
+  uint32_t reserved[4];
+  int32_t EOR;
+} RPY_NTPData;
+
+typedef struct {
+  uint8_t name[256];
+  int32_t EOR;
+} RPY_NTPSourceName;
+
+#define RPY_AD_MD_NONE 0
+#define RPY_AD_MD_SYMMETRIC 1
+#define RPY_AD_MD_NTS 2
+
+typedef struct {
+  uint16_t mode;
+  uint16_t key_type;
+  uint32_t key_id;
+  uint16_t key_length;
+  uint16_t ke_attempts;
+  uint32_t last_ke_ago;
+  uint16_t cookies;
+  uint16_t cookie_length;
+  uint16_t nak;
+  uint16_t pad;
+  int32_t EOR;
+} RPY_AuthData;
+
+#define RPY_SD_OPTION_NOSELECT 0x1
+#define RPY_SD_OPTION_PREFER 0x2
+#define RPY_SD_OPTION_TRUST 0x4
+#define RPY_SD_OPTION_REQUIRE 0x8
+
+typedef struct {
+  uint32_t ref_id;
+  IPAddr ip_addr;
+  uint8_t state_char;
+  uint8_t authentication;
+  uint8_t leap;
+  uint8_t pad;
+  uint16_t conf_options;
+  uint16_t eff_options;
+  uint32_t last_sample_ago;
+  Float score;
+  Float lo_limit;
+  Float hi_limit;
+  int32_t EOR;
+} RPY_SelectData;
+
+typedef struct {
+  uint8_t version;
+  uint8_t pkt_type;
+  uint8_t res1;
+  uint8_t res2;
+  uint16_t command; /* Which command is being replied to */
+  uint16_t reply; /* Which format of reply this is */
+  uint16_t status; /* Status of command processing */
+  uint16_t pad1; /* Padding for compatibility and 4 byte alignment */
+  uint16_t pad2;
+  uint16_t pad3;
+  uint32_t sequence; /* Echo of client's sequence number */
+  uint32_t pad4;
+  uint32_t pad5;
+
+  union {
+    RPY_Null null;
+    RPY_N_Sources n_sources;
+    RPY_Source_Data source_data;
+    RPY_ManualTimestamp manual_timestamp;
+    RPY_Tracking tracking;
+    RPY_Sourcestats sourcestats;
+    RPY_Rtc rtc;
+    RPY_ClientAccessesByIndex client_accesses_by_index;
+    RPY_ServerStats server_stats;
+    RPY_ManualList manual_list;
+    RPY_Activity activity;
+    RPY_Smoothing smoothing;
+    RPY_NTPData ntp_data;
+    RPY_NTPSourceName ntp_source_name;
+    RPY_AuthData auth_data;
+    RPY_SelectData select_data;
+  } data; /* Reply specific parameters */
+
+} CMD_Reply;
+
+/* ================================================== */
+
+#endif /* GOT_CANDM_H */