#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <stdio.h>
#include <ctype.h>
#include <signal.h>
#include <sys/stat.h>
#ifdef HAVE_NETINET_IN_H
# include <netinet/in.h>
#endif
#include <arpa/inet.h>
#include "ntpd.h"
#include "ntp_io.h"
#include "ntp_refclock.h"
#include "ntp_control.h"
#include "ntp_unixtime.h"
#include "ntp_stdlib.h"
#include "ntp_config.h"
#include "ntp_crypto.h"
#include "ntp_assert.h"
#include "ntp_leapsec.h"
#include "ntp_md5.h"
#include "lib_strbuf.h"
#include <rc_cmdlength.h>
#ifdef KERNEL_PLL
# include "ntp_syscall.h"
#endif
struct ctl_proc {
short control_code;
#define NO_REQUEST (-1)
u_short flags;
#define NOAUTH 0
#define AUTH 1
void (*handler) (struct recvbuf *, int);
};
static void ctl_error (u_char);
#ifdef REFCLOCK
static u_short ctlclkstatus (struct refclockstat *);
#endif
static void ctl_flushpkt (u_char);
static void ctl_putdata (const char *, unsigned int, int);
static void ctl_putstr (const char *, const char *, size_t);
static void ctl_putdblf (const char *, int, int, double);
#define ctl_putdbl(tag, d) ctl_putdblf(tag, 1, 3, d)
#define ctl_putdbl6(tag, d) ctl_putdblf(tag, 1, 6, d)
#define ctl_putsfp(tag, sfp) ctl_putdblf(tag, 0, -1, \
FPTOD(sfp))
static void ctl_putuint (const char *, u_long);
static void ctl_puthex (const char *, u_long);
static void ctl_putint (const char *, long);
static void ctl_putts (const char *, l_fp *);
static void ctl_putadr (const char *, u_int32,
sockaddr_u *);
static void ctl_putrefid (const char *, u_int32);
static void ctl_putarray (const char *, double *, int);
static void ctl_putsys (int);
static void ctl_putpeer (int, struct peer *);
static void ctl_putfs (const char *, tstamp_t);
static void ctl_printf (const char *, ...) NTP_PRINTF(1, 2);
#ifdef REFCLOCK
static void ctl_putclock (int, struct refclockstat *, int);
#endif
static const struct ctl_var *ctl_getitem(const struct ctl_var *,
char **);
static u_short count_var (const struct ctl_var *);
static void control_unspec (struct recvbuf *, int);
static void read_status (struct recvbuf *, int);
static void read_sysvars (void);
static void read_peervars (void);
static void read_variables (struct recvbuf *, int);
static void write_variables (struct recvbuf *, int);
static void read_clockstatus(struct recvbuf *, int);
static void write_clockstatus(struct recvbuf *, int);
static void set_trap (struct recvbuf *, int);
static void save_config (struct recvbuf *, int);
static void configure (struct recvbuf *, int);
static void send_mru_entry (mon_entry *, int);
static void send_random_tag_value(int);
static void read_mru_list (struct recvbuf *, int);
static void send_ifstats_entry(endpt *, u_int);
static void read_ifstats (struct recvbuf *);
static void sockaddrs_from_restrict_u(sockaddr_u *, sockaddr_u *,
restrict_u *, int);
static void send_restrict_entry(restrict_u *, int, u_int);
static void send_restrict_list(restrict_u *, int, u_int *);
static void read_addr_restrictions(struct recvbuf *);
static void read_ordlist (struct recvbuf *, int);
static u_int32 derive_nonce (sockaddr_u *, u_int32, u_int32);
static void generate_nonce (struct recvbuf *, char *, size_t);
static int validate_nonce (const char *, struct recvbuf *);
static void req_nonce (struct recvbuf *, int);
static void unset_trap (struct recvbuf *, int);
static struct ctl_trap *ctlfindtrap(sockaddr_u *,
struct interface *);
int is_safe_filename(const char * name);
static const struct ctl_proc control_codes[] = {
{ CTL_OP_UNSPEC, NOAUTH, control_unspec },
{ CTL_OP_READSTAT, NOAUTH, read_status },
{ CTL_OP_READVAR, NOAUTH, read_variables },
{ CTL_OP_WRITEVAR, AUTH, write_variables },
{ CTL_OP_READCLOCK, NOAUTH, read_clockstatus },
{ CTL_OP_WRITECLOCK, AUTH, write_clockstatus },
{ CTL_OP_SETTRAP, AUTH, set_trap },
{ CTL_OP_CONFIGURE, AUTH, configure },
{ CTL_OP_SAVECONFIG, AUTH, save_config },
{ CTL_OP_READ_MRU, NOAUTH, read_mru_list },
{ CTL_OP_READ_ORDLIST_A, AUTH, read_ordlist },
{ CTL_OP_REQ_NONCE, NOAUTH, req_nonce },
{ CTL_OP_UNSETTRAP, AUTH, unset_trap },
{ NO_REQUEST, 0, NULL }
};
#define CS_LEAP 1
#define CS_STRATUM 2
#define CS_PRECISION 3
#define CS_ROOTDELAY 4
#define CS_ROOTDISPERSION 5
#define CS_REFID 6
#define CS_REFTIME 7
#define CS_POLL 8
#define CS_PEERID 9
#define CS_OFFSET 10
#define CS_DRIFT 11
#define CS_JITTER 12
#define CS_ERROR 13
#define CS_CLOCK 14
#define CS_PROCESSOR 15
#define CS_SYSTEM 16
#define CS_VERSION 17
#define CS_STABIL 18
#define CS_VARLIST 19
#define CS_TAI 20
#define CS_LEAPTAB 21
#define CS_LEAPEND 22
#define CS_RATE 23
#define CS_MRU_ENABLED 24
#define CS_MRU_DEPTH 25
#define CS_MRU_DEEPEST 26
#define CS_MRU_MINDEPTH 27
#define CS_MRU_MAXAGE 28
#define CS_MRU_MAXDEPTH 29
#define CS_MRU_MEM 30
#define CS_MRU_MAXMEM 31
#define CS_SS_UPTIME 32
#define CS_SS_RESET 33
#define CS_SS_RECEIVED 34
#define CS_SS_THISVER 35
#define CS_SS_OLDVER 36
#define CS_SS_BADFORMAT 37
#define CS_SS_BADAUTH 38
#define CS_SS_DECLINED 39
#define CS_SS_RESTRICTED 40
#define CS_SS_LIMITED 41
#define CS_SS_KODSENT 42
#define CS_SS_PROCESSED 43
#define CS_PEERADR 44
#define CS_PEERMODE 45
#define CS_BCASTDELAY 46
#define CS_AUTHDELAY 47
#define CS_AUTHKEYS 48
#define CS_AUTHFREEK 49
#define CS_AUTHKLOOKUPS 50
#define CS_AUTHKNOTFOUND 51
#define CS_AUTHKUNCACHED 52
#define CS_AUTHKEXPIRED 53
#define CS_AUTHENCRYPTS 54
#define CS_AUTHDECRYPTS 55
#define CS_AUTHRESET 56
#define CS_K_OFFSET 57
#define CS_K_FREQ 58
#define CS_K_MAXERR 59
#define CS_K_ESTERR 60
#define CS_K_STFLAGS 61
#define CS_K_TIMECONST 62
#define CS_K_PRECISION 63
#define CS_K_FREQTOL 64
#define CS_K_PPS_FREQ 65
#define CS_K_PPS_STABIL 66
#define CS_K_PPS_JITTER 67
#define CS_K_PPS_CALIBDUR 68
#define CS_K_PPS_CALIBS 69
#define CS_K_PPS_CALIBERRS 70
#define CS_K_PPS_JITEXC 71
#define CS_K_PPS_STBEXC 72
#define CS_KERN_FIRST CS_K_OFFSET
#define CS_KERN_LAST CS_K_PPS_STBEXC
#define CS_IOSTATS_RESET 73
#define CS_TOTAL_RBUF 74
#define CS_FREE_RBUF 75
#define CS_USED_RBUF 76
#define CS_RBUF_LOWATER 77
#define CS_IO_DROPPED 78
#define CS_IO_IGNORED 79
#define CS_IO_RECEIVED 80
#define CS_IO_SENT 81
#define CS_IO_SENDFAILED 82
#define CS_IO_WAKEUPS 83
#define CS_IO_GOODWAKEUPS 84
#define CS_TIMERSTATS_RESET 85
#define CS_TIMER_OVERRUNS 86
#define CS_TIMER_XMTS 87
#define CS_FUZZ 88
#define CS_WANDER_THRESH 89
#define CS_LEAPSMEARINTV 90
#define CS_LEAPSMEAROFFS 91
#define CS_MAX_NOAUTOKEY CS_LEAPSMEAROFFS
#ifdef AUTOKEY
#define CS_FLAGS (1 + CS_MAX_NOAUTOKEY)
#define CS_HOST (2 + CS_MAX_NOAUTOKEY)
#define CS_PUBLIC (3 + CS_MAX_NOAUTOKEY)
#define CS_CERTIF (4 + CS_MAX_NOAUTOKEY)
#define CS_SIGNATURE (5 + CS_MAX_NOAUTOKEY)
#define CS_REVTIME (6 + CS_MAX_NOAUTOKEY)
#define CS_IDENT (7 + CS_MAX_NOAUTOKEY)
#define CS_DIGEST (8 + CS_MAX_NOAUTOKEY)
#define CS_MAXCODE CS_DIGEST
#else
#define CS_MAXCODE CS_MAX_NOAUTOKEY
#endif
#define CP_CONFIG 1
#define CP_AUTHENABLE 2
#define CP_AUTHENTIC 3
#define CP_SRCADR 4
#define CP_SRCPORT 5
#define CP_DSTADR 6
#define CP_DSTPORT 7
#define CP_LEAP 8
#define CP_HMODE 9
#define CP_STRATUM 10
#define CP_PPOLL 11
#define CP_HPOLL 12
#define CP_PRECISION 13
#define CP_ROOTDELAY 14
#define CP_ROOTDISPERSION 15
#define CP_REFID 16
#define CP_REFTIME 17
#define CP_ORG 18
#define CP_REC 19
#define CP_XMT 20
#define CP_REACH 21
#define CP_UNREACH 22
#define CP_TIMER 23
#define CP_DELAY 24
#define CP_OFFSET 25
#define CP_JITTER 26
#define CP_DISPERSION 27
#define CP_KEYID 28
#define CP_FILTDELAY 29
#define CP_FILTOFFSET 30
#define CP_PMODE 31
#define CP_RECEIVED 32
#define CP_SENT 33
#define CP_FILTERROR 34
#define CP_FLASH 35
#define CP_TTL 36
#define CP_VARLIST 37
#define CP_IN 38
#define CP_OUT 39
#define CP_RATE 40
#define CP_BIAS 41
#define CP_SRCHOST 42
#define CP_TIMEREC 43
#define CP_TIMEREACH 44
#define CP_BADAUTH 45
#define CP_BOGUSORG 46
#define CP_OLDPKT 47
#define CP_SELDISP 48
#define CP_SELBROKEN 49
#define CP_CANDIDATE 50
#define CP_MAX_NOAUTOKEY CP_CANDIDATE
#ifdef AUTOKEY
#define CP_FLAGS (1 + CP_MAX_NOAUTOKEY)
#define CP_HOST (2 + CP_MAX_NOAUTOKEY)
#define CP_VALID (3 + CP_MAX_NOAUTOKEY)
#define CP_INITSEQ (4 + CP_MAX_NOAUTOKEY)
#define CP_INITKEY (5 + CP_MAX_NOAUTOKEY)
#define CP_INITTSP (6 + CP_MAX_NOAUTOKEY)
#define CP_SIGNATURE (7 + CP_MAX_NOAUTOKEY)
#define CP_IDENT (8 + CP_MAX_NOAUTOKEY)
#define CP_MAXCODE CP_IDENT
#else
#define CP_MAXCODE CP_MAX_NOAUTOKEY
#endif
#define CC_TYPE 1
#define CC_TIMECODE 2
#define CC_POLL 3
#define CC_NOREPLY 4
#define CC_BADFORMAT 5
#define CC_BADDATA 6
#define CC_FUDGETIME1 7
#define CC_FUDGETIME2 8
#define CC_FUDGEVAL1 9
#define CC_FUDGEVAL2 10
#define CC_FLAGS 11
#define CC_DEVICE 12
#define CC_VARLIST 13
#define CC_MAXCODE CC_VARLIST
static const struct ctl_var sys_var[] = {
{ 0, PADDING, "" },
{ CS_LEAP, RW, "leap" },
{ CS_STRATUM, RO, "stratum" },
{ CS_PRECISION, RO, "precision" },
{ CS_ROOTDELAY, RO, "rootdelay" },
{ CS_ROOTDISPERSION, RO, "rootdisp" },
{ CS_REFID, RO, "refid" },
{ CS_REFTIME, RO, "reftime" },
{ CS_POLL, RO, "tc" },
{ CS_PEERID, RO, "peer" },
{ CS_OFFSET, RO, "offset" },
{ CS_DRIFT, RO, "frequency" },
{ CS_JITTER, RO, "sys_jitter" },
{ CS_ERROR, RO, "clk_jitter" },
{ CS_CLOCK, RO, "clock" },
{ CS_PROCESSOR, RO, "processor" },
{ CS_SYSTEM, RO, "system" },
{ CS_VERSION, RO, "version" },
{ CS_STABIL, RO, "clk_wander" },
{ CS_VARLIST, RO, "sys_var_list" },
{ CS_TAI, RO, "tai" },
{ CS_LEAPTAB, RO, "leapsec" },
{ CS_LEAPEND, RO, "expire" },
{ CS_RATE, RO, "mintc" },
{ CS_MRU_ENABLED, RO, "mru_enabled" },
{ CS_MRU_DEPTH, RO, "mru_depth" },
{ CS_MRU_DEEPEST, RO, "mru_deepest" },
{ CS_MRU_MINDEPTH, RO, "mru_mindepth" },
{ CS_MRU_MAXAGE, RO, "mru_maxage" },
{ CS_MRU_MAXDEPTH, RO, "mru_maxdepth" },
{ CS_MRU_MEM, RO, "mru_mem" },
{ CS_MRU_MAXMEM, RO, "mru_maxmem" },
{ CS_SS_UPTIME, RO, "ss_uptime" },
{ CS_SS_RESET, RO, "ss_reset" },
{ CS_SS_RECEIVED, RO, "ss_received" },
{ CS_SS_THISVER, RO, "ss_thisver" },
{ CS_SS_OLDVER, RO, "ss_oldver" },
{ CS_SS_BADFORMAT, RO, "ss_badformat" },
{ CS_SS_BADAUTH, RO, "ss_badauth" },
{ CS_SS_DECLINED, RO, "ss_declined" },
{ CS_SS_RESTRICTED, RO, "ss_restricted" },
{ CS_SS_LIMITED, RO, "ss_limited" },
{ CS_SS_KODSENT, RO, "ss_kodsent" },
{ CS_SS_PROCESSED, RO, "ss_processed" },
{ CS_PEERADR, RO, "peeradr" },
{ CS_PEERMODE, RO, "peermode" },
{ CS_BCASTDELAY, RO, "bcastdelay" },
{ CS_AUTHDELAY, RO, "authdelay" },
{ CS_AUTHKEYS, RO, "authkeys" },
{ CS_AUTHFREEK, RO, "authfreek" },
{ CS_AUTHKLOOKUPS, RO, "authklookups" },
{ CS_AUTHKNOTFOUND, RO, "authknotfound" },
{ CS_AUTHKUNCACHED, RO, "authkuncached" },
{ CS_AUTHKEXPIRED, RO, "authkexpired" },
{ CS_AUTHENCRYPTS, RO, "authencrypts" },
{ CS_AUTHDECRYPTS, RO, "authdecrypts" },
{ CS_AUTHRESET, RO, "authreset" },
{ CS_K_OFFSET, RO, "koffset" },
{ CS_K_FREQ, RO, "kfreq" },
{ CS_K_MAXERR, RO, "kmaxerr" },
{ CS_K_ESTERR, RO, "kesterr" },
{ CS_K_STFLAGS, RO, "kstflags" },
{ CS_K_TIMECONST, RO, "ktimeconst" },
{ CS_K_PRECISION, RO, "kprecis" },
{ CS_K_FREQTOL, RO, "kfreqtol" },
{ CS_K_PPS_FREQ, RO, "kppsfreq" },
{ CS_K_PPS_STABIL, RO, "kppsstab" },
{ CS_K_PPS_JITTER, RO, "kppsjitter" },
{ CS_K_PPS_CALIBDUR, RO, "kppscalibdur" },
{ CS_K_PPS_CALIBS, RO, "kppscalibs" },
{ CS_K_PPS_CALIBERRS, RO, "kppscaliberrs" },
{ CS_K_PPS_JITEXC, RO, "kppsjitexc" },
{ CS_K_PPS_STBEXC, RO, "kppsstbexc" },
{ CS_IOSTATS_RESET, RO, "iostats_reset" },
{ CS_TOTAL_RBUF, RO, "total_rbuf" },
{ CS_FREE_RBUF, RO, "free_rbuf" },
{ CS_USED_RBUF, RO, "used_rbuf" },
{ CS_RBUF_LOWATER, RO, "rbuf_lowater" },
{ CS_IO_DROPPED, RO, "io_dropped" },
{ CS_IO_IGNORED, RO, "io_ignored" },
{ CS_IO_RECEIVED, RO, "io_received" },
{ CS_IO_SENT, RO, "io_sent" },
{ CS_IO_SENDFAILED, RO, "io_sendfailed" },
{ CS_IO_WAKEUPS, RO, "io_wakeups" },
{ CS_IO_GOODWAKEUPS, RO, "io_goodwakeups" },
{ CS_TIMERSTATS_RESET, RO, "timerstats_reset" },
{ CS_TIMER_OVERRUNS, RO, "timer_overruns" },
{ CS_TIMER_XMTS, RO, "timer_xmts" },
{ CS_FUZZ, RO, "fuzz" },
{ CS_WANDER_THRESH, RO, "clk_wander_threshold" },
{ CS_LEAPSMEARINTV, RO, "leapsmearinterval" },
{ CS_LEAPSMEAROFFS, RO, "leapsmearoffset" },
#ifdef AUTOKEY
{ CS_FLAGS, RO, "flags" },
{ CS_HOST, RO, "host" },
{ CS_PUBLIC, RO, "update" },
{ CS_CERTIF, RO, "cert" },
{ CS_SIGNATURE, RO, "signature" },
{ CS_REVTIME, RO, "until" },
{ CS_IDENT, RO, "ident" },
{ CS_DIGEST, RO, "digest" },
#endif
{ 0, EOV, "" }
};
static struct ctl_var *ext_sys_var = NULL;
static const u_char def_sys_var[] = {
CS_VERSION,
CS_PROCESSOR,
CS_SYSTEM,
CS_LEAP,
CS_STRATUM,
CS_PRECISION,
CS_ROOTDELAY,
CS_ROOTDISPERSION,
CS_REFID,
CS_REFTIME,
CS_CLOCK,
CS_PEERID,
CS_POLL,
CS_RATE,
CS_OFFSET,
CS_DRIFT,
CS_JITTER,
CS_ERROR,
CS_STABIL,
CS_TAI,
CS_LEAPTAB,
CS_LEAPEND,
CS_LEAPSMEARINTV,
CS_LEAPSMEAROFFS,
#ifdef AUTOKEY
CS_HOST,
CS_IDENT,
CS_FLAGS,
CS_DIGEST,
CS_SIGNATURE,
CS_PUBLIC,
CS_CERTIF,
#endif
0
};
static const struct ctl_var peer_var[] = {
{ 0, PADDING, "" },
{ CP_CONFIG, RO, "config" },
{ CP_AUTHENABLE, RO, "authenable" },
{ CP_AUTHENTIC, RO, "authentic" },
{ CP_SRCADR, RO, "srcadr" },
{ CP_SRCPORT, RO, "srcport" },
{ CP_DSTADR, RO, "dstadr" },
{ CP_DSTPORT, RO, "dstport" },
{ CP_LEAP, RO, "leap" },
{ CP_HMODE, RO, "hmode" },
{ CP_STRATUM, RO, "stratum" },
{ CP_PPOLL, RO, "ppoll" },
{ CP_HPOLL, RO, "hpoll" },
{ CP_PRECISION, RO, "precision" },
{ CP_ROOTDELAY, RO, "rootdelay" },
{ CP_ROOTDISPERSION, RO, "rootdisp" },
{ CP_REFID, RO, "refid" },
{ CP_REFTIME, RO, "reftime" },
{ CP_ORG, RO, "org" },
{ CP_REC, RO, "rec" },
{ CP_XMT, RO, "xleave" },
{ CP_REACH, RO, "reach" },
{ CP_UNREACH, RO, "unreach" },
{ CP_TIMER, RO, "timer" },
{ CP_DELAY, RO, "delay" },
{ CP_OFFSET, RO, "offset" },
{ CP_JITTER, RO, "jitter" },
{ CP_DISPERSION, RO, "dispersion" },
{ CP_KEYID, RO, "keyid" },
{ CP_FILTDELAY, RO, "filtdelay" },
{ CP_FILTOFFSET, RO, "filtoffset" },
{ CP_PMODE, RO, "pmode" },
{ CP_RECEIVED, RO, "received"},
{ CP_SENT, RO, "sent" },
{ CP_FILTERROR, RO, "filtdisp" },
{ CP_FLASH, RO, "flash" },
{ CP_TTL, RO, "ttl" },
{ CP_VARLIST, RO, "peer_var_list" },
{ CP_IN, RO, "in" },
{ CP_OUT, RO, "out" },
{ CP_RATE, RO, "headway" },
{ CP_BIAS, RO, "bias" },
{ CP_SRCHOST, RO, "srchost" },
{ CP_TIMEREC, RO, "timerec" },
{ CP_TIMEREACH, RO, "timereach" },
{ CP_BADAUTH, RO, "badauth" },
{ CP_BOGUSORG, RO, "bogusorg" },
{ CP_OLDPKT, RO, "oldpkt" },
{ CP_SELDISP, RO, "seldisp" },
{ CP_SELBROKEN, RO, "selbroken" },
{ CP_CANDIDATE, RO, "candidate" },
#ifdef AUTOKEY
{ CP_FLAGS, RO, "flags" },
{ CP_HOST, RO, "host" },
{ CP_VALID, RO, "valid" },
{ CP_INITSEQ, RO, "initsequence" },
{ CP_INITKEY, RO, "initkey" },
{ CP_INITTSP, RO, "timestamp" },
{ CP_SIGNATURE, RO, "signature" },
{ CP_IDENT, RO, "ident" },
#endif
{ 0, EOV, "" }
};
static const u_char def_peer_var[] = {
CP_SRCADR,
CP_SRCPORT,
CP_SRCHOST,
CP_DSTADR,
CP_DSTPORT,
CP_OUT,
CP_IN,
CP_LEAP,
CP_STRATUM,
CP_PRECISION,
CP_ROOTDELAY,
CP_ROOTDISPERSION,
CP_REFID,
CP_REFTIME,
CP_REC,
CP_REACH,
CP_UNREACH,
CP_HMODE,
CP_PMODE,
CP_HPOLL,
CP_PPOLL,
CP_RATE,
CP_FLASH,
CP_KEYID,
CP_TTL,
CP_OFFSET,
CP_DELAY,
CP_DISPERSION,
CP_JITTER,
CP_XMT,
CP_BIAS,
CP_FILTDELAY,
CP_FILTOFFSET,
CP_FILTERROR,
#ifdef AUTOKEY
CP_HOST,
CP_FLAGS,
CP_SIGNATURE,
CP_VALID,
CP_INITSEQ,
CP_IDENT,
#endif
0
};
#ifdef REFCLOCK
static const struct ctl_var clock_var[] = {
{ 0, PADDING, "" },
{ CC_TYPE, RO, "type" },
{ CC_TIMECODE, RO, "timecode" },
{ CC_POLL, RO, "poll" },
{ CC_NOREPLY, RO, "noreply" },
{ CC_BADFORMAT, RO, "badformat" },
{ CC_BADDATA, RO, "baddata" },
{ CC_FUDGETIME1, RO, "fudgetime1" },
{ CC_FUDGETIME2, RO, "fudgetime2" },
{ CC_FUDGEVAL1, RO, "stratum" },
{ CC_FUDGEVAL2, RO, "refid" },
{ CC_FLAGS, RO, "flags" },
{ CC_DEVICE, RO, "device" },
{ CC_VARLIST, RO, "clock_var_list" },
{ 0, EOV, "" }
};
static const u_char def_clock_var[] = {
CC_DEVICE,
CC_TYPE,
CC_TIMECODE,
CC_POLL,
CC_NOREPLY,
CC_BADFORMAT,
CC_BADDATA,
CC_FUDGETIME1,
CC_FUDGETIME2,
CC_FUDGEVAL1,
CC_FUDGEVAL2,
CC_FLAGS,
0
};
#endif
static const char addr_fmt[] = "addr.%d";
static const char last_fmt[] = "last.%d";
#ifndef HAVE_UNAME
# ifndef STR_SYSTEM
# define STR_SYSTEM "UNIX"
# endif
# ifndef STR_PROCESSOR
# define STR_PROCESSOR "unknown"
# endif
static const char str_system[] = STR_SYSTEM;
static const char str_processor[] = STR_PROCESSOR;
#else
# include <sys/utsname.h>
static struct utsname utsnamebuf;
#endif
struct ctl_trap ctl_traps[CTL_MAXTRAPS];
int num_ctl_traps;
#define TRAP_TYPE_CONFIG 0
#define TRAP_TYPE_PRIO 1
#define TRAP_TYPE_NONPRIO 2
#ifdef REFCLOCK
static const u_char clocktypes[] = {
CTL_SST_TS_NTP,
CTL_SST_TS_LOCAL,
CTL_SST_TS_UHF,
CTL_SST_TS_HF,
CTL_SST_TS_LF,
CTL_SST_TS_UHF,
CTL_SST_TS_UHF,
CTL_SST_TS_HF,
CTL_SST_TS_LF,
CTL_SST_TS_LF,
CTL_SST_TS_UHF,
CTL_SST_TS_UHF,
CTL_SST_TS_UHF,
CTL_SST_TS_ATOM,
CTL_SST_TS_LF,
CTL_SST_TS_NTP,
CTL_SST_TS_UHF,
CTL_SST_TS_UHF,
CTL_SST_TS_TELEPHONE,
CTL_SST_TS_HF,
CTL_SST_TS_UHF,
CTL_SST_TS_UHF,
CTL_SST_TS_ATOM,
CTL_SST_TS_NTP,
CTL_SST_TS_NTP,
CTL_SST_TS_NTP,
CTL_SST_TS_UHF,
CTL_SST_TS_LF,
CTL_SST_TS_UHF,
CTL_SST_TS_UHF,
CTL_SST_TS_UHF,
CTL_SST_TS_UHF,
CTL_SST_TS_LF,
CTL_SST_TS_LF,
CTL_SST_TS_LF,
CTL_SST_TS_LF,
CTL_SST_TS_HF,
CTL_SST_TS_LF,
CTL_SST_TS_UHF,
CTL_SST_TS_UHF,
CTL_SST_TS_LF,
CTL_SST_TS_UHF,
CTL_SST_TS_UHF,
CTL_SST_TS_UHF,
CTL_SST_TS_UHF,
CTL_SST_TS_UHF,
CTL_SST_TS_UHF
};
#endif
keyid_t ctl_auth_keyid;
static u_char ctl_sys_last_event;
static u_char ctl_sys_num_events;
u_long ctltimereset;
u_long numctlreq;
u_long numctlbadpkts;
u_long numctlresponses;
u_long numctlfrags;
u_long numctlerrors;
u_long numctltooshort;
u_long numctlinputresp;
u_long numctlinputfrag;
u_long numctlinputerr;
u_long numctlbadoffset;
u_long numctlbadversion;
u_long numctldatatooshort;
u_long numctlbadop;
u_long numasyncmsgs;
static struct ntp_control rpkt;
static u_char res_version;
static u_char res_opcode;
static associd_t res_associd;
static u_short res_frags;
static int res_offset;
static u_char * datapt;
static u_char * dataend;
static int datalinelen;
static int datasent;
static int datanotbinflag;
static sockaddr_u *rmt_addr;
static struct interface *lcl_inter;
static u_char res_authenticate;
static u_char res_authokay;
static keyid_t res_keyid;
#define MAXDATALINELEN (72)
static u_char res_async;
static char *reqpt;
static char *reqend;
#ifndef MIN
#define MIN(a, b) (((a) <= (b)) ? (a) : (b))
#endif
void
init_control(void)
{
size_t i;
#ifdef HAVE_UNAME
uname(&utsnamebuf);
#endif
ctl_clr_stats();
ctl_auth_keyid = 0;
ctl_sys_last_event = EVNT_UNSPEC;
ctl_sys_num_events = 0;
num_ctl_traps = 0;
for (i = 0; i < COUNTOF(ctl_traps); i++)
ctl_traps[i].tr_flags = 0;
}
static void
ctl_error(
u_char errcode
)
{
size_t maclen;
numctlerrors++;
DPRINTF(3, ("sending control error %u\n", errcode));
rpkt.r_m_e_op = (u_char)CTL_RESPONSE | CTL_ERROR |
(res_opcode & CTL_OP_MASK);
rpkt.status = htons((u_short)(errcode << 8) & 0xff00);
rpkt.count = 0;
if (res_authenticate && sys_authenticate) {
maclen = authencrypt(res_keyid, (u_int32 *)&rpkt,
CTL_HEADER_LEN);
sendpkt(rmt_addr, lcl_inter, -2, (void *)&rpkt,
CTL_HEADER_LEN + maclen);
} else
sendpkt(rmt_addr, lcl_inter, -3, (void *)&rpkt,
CTL_HEADER_LEN);
}
int
is_safe_filename(const char * name)
{
static const uint32_t chclass[8] = {
0x00000000, 0x00000000,
0x28800000, 0x000FFFFF,
0xFFFFFFFC, 0xC03FFFFF,
0xFFFFFFFC, 0x003FFFFF
};
u_int widx, bidx, mask;
if ( ! (name && *name))
return FALSE;
mask = 1u;
while (0 != (widx = (u_char)*name++)) {
bidx = (widx & 15) << 1;
widx = widx >> 4;
if (widx >= sizeof(chclass)/sizeof(chclass[0]))
return FALSE;
if (0 == ((chclass[widx] >> bidx) & mask))
return FALSE;
mask = 2u;
}
return TRUE;
}
void
save_config(
struct recvbuf *rbufp,
int restrict_mask
)
{
static const char * illegal_in_filename =
#if defined(VMS)
":[]"
#elif defined(SYS_WINNT)
":\\/"
#else
"\\/"
#endif
;
char reply[128];
#ifdef SAVECONFIG
static const char savedconfig_eq[] = "savedconfig=";
static const int openmode = O_CREAT | O_TRUNC | O_WRONLY
# if defined(O_EXCL)
| O_EXCL
# elif defined(_O_EXCL)
| _O_EXCL
# endif
# if defined(_O_TEXT)
| _O_TEXT
#endif
;
char filespec[128];
char filename[128];
char fullpath[512];
char savedconfig[sizeof(savedconfig_eq) + sizeof(filename)];
time_t now;
int fd;
FILE *fptr;
int prc;
size_t reqlen;
#endif
if (RES_NOMODIFY & restrict_mask) {
ctl_printf("%s", "saveconfig prohibited by restrict ... nomodify");
ctl_flushpkt(0);
NLOG(NLOG_SYSINFO)
msyslog(LOG_NOTICE,
"saveconfig from %s rejected due to nomodify restriction",
stoa(&rbufp->recv_srcadr));
sys_restricted++;
return;
}
#ifdef SAVECONFIG
if (NULL == saveconfigdir) {
ctl_printf("%s", "saveconfig prohibited, no saveconfigdir configured");
ctl_flushpkt(0);
NLOG(NLOG_SYSINFO)
msyslog(LOG_NOTICE,
"saveconfig from %s rejected, no saveconfigdir",
stoa(&rbufp->recv_srcadr));
return;
}
reqlen = (size_t)(reqend - reqpt);
if (0 != reqlen) {
char * nulpos = (char*)memchr(reqpt, 0, reqlen);
if (NULL != nulpos)
reqlen = (size_t)(nulpos - reqpt);
}
if (0 == reqlen)
return;
if (reqlen >= sizeof(filespec)) {
ctl_printf("saveconfig exceeded maximum raw name length (%u)",
(u_int)sizeof(filespec));
ctl_flushpkt(0);
msyslog(LOG_NOTICE,
"saveconfig exceeded maximum raw name length from %s",
stoa(&rbufp->recv_srcadr));
return;
}
memcpy(filespec, reqpt, reqlen);
filespec[reqlen] = '\0';
time(&now);
if (0 == strftime(filename, sizeof(filename), filespec,
localtime(&now)))
{
strlcpy(filename, filespec, sizeof(filename));
}
if (!is_safe_filename(filename)) {
ctl_printf("saveconfig rejects unsafe file name '%s'",
filename);
ctl_flushpkt(0);
msyslog(LOG_NOTICE,
"saveconfig rejects unsafe file name from %s",
stoa(&rbufp->recv_srcadr));
return;
}
if (NULL != strpbrk(filename, illegal_in_filename)) {
snprintf(reply, sizeof(reply),
"saveconfig does not allow directory in filename");
ctl_putdata(reply, strlen(reply), 0);
ctl_flushpkt(0);
msyslog(LOG_NOTICE,
"saveconfig rejects unsafe file name from %s",
stoa(&rbufp->recv_srcadr));
return;
}
prc = snprintf(fullpath, sizeof(fullpath), "%s%s",
saveconfigdir, filename);
if (prc < 0 || prc >= sizeof(fullpath)) {
ctl_printf("saveconfig exceeded maximum path length (%u)",
(u_int)sizeof(fullpath));
ctl_flushpkt(0);
msyslog(LOG_NOTICE,
"saveconfig exceeded maximum path length from %s",
stoa(&rbufp->recv_srcadr));
return;
}
fd = open(fullpath, openmode, S_IRUSR | S_IWUSR);
if (-1 == fd)
fptr = NULL;
else
fptr = fdopen(fd, "w");
if (NULL == fptr || -1 == dump_all_config_trees(fptr, 1)) {
ctl_printf("Unable to save configuration to file '%s': %m",
filename);
msyslog(LOG_ERR,
"saveconfig %s from %s failed", filename,
stoa(&rbufp->recv_srcadr));
} else {
ctl_printf("Configuration saved to '%s'", filename);
msyslog(LOG_NOTICE,
"Configuration saved to '%s' (requested by %s)",
fullpath, stoa(&rbufp->recv_srcadr));
snprintf(savedconfig, sizeof(savedconfig), "%s%s",
savedconfig_eq, filename);
set_sys_var(savedconfig, strlen(savedconfig) + 1, RO);
}
if (NULL != fptr)
fclose(fptr);
#else
ctl_printf("%s",
"saveconfig unavailable, configured with --disable-saveconfig");
#endif
ctl_flushpkt(0);
}
void
process_control(
struct recvbuf *rbufp,
int restrict_mask
)
{
struct ntp_control *pkt;
int req_count;
int req_data;
const struct ctl_proc *cc;
keyid_t *pkid;
int properlen;
size_t maclen;
DPRINTF(3, ("in process_control()\n"));
numctlreq++;
rmt_addr = &rbufp->recv_srcadr;
lcl_inter = rbufp->dstadr;
pkt = (struct ntp_control *)&rbufp->recv_pkt;
if (rbufp->recv_length < (int)CTL_HEADER_LEN
|| (CTL_RESPONSE | CTL_MORE | CTL_ERROR) & pkt->r_m_e_op
|| pkt->offset != 0) {
DPRINTF(1, ("invalid format in control packet\n"));
if (rbufp->recv_length < (int)CTL_HEADER_LEN)
numctltooshort++;
if (CTL_RESPONSE & pkt->r_m_e_op)
numctlinputresp++;
if (CTL_MORE & pkt->r_m_e_op)
numctlinputfrag++;
if (CTL_ERROR & pkt->r_m_e_op)
numctlinputerr++;
if (pkt->offset != 0)
numctlbadoffset++;
return;
}
res_version = PKT_VERSION(pkt->li_vn_mode);
if (res_version > NTP_VERSION || res_version < NTP_OLDVERSION) {
DPRINTF(1, ("unknown version %d in control packet\n",
res_version));
numctlbadversion++;
return;
}
rpkt.li_vn_mode = PKT_LI_VN_MODE(sys_leap, res_version,
MODE_CONTROL);
res_opcode = pkt->r_m_e_op;
rpkt.sequence = pkt->sequence;
rpkt.associd = pkt->associd;
rpkt.status = 0;
res_frags = 1;
res_offset = 0;
res_associd = htons(pkt->associd);
res_async = FALSE;
res_authenticate = FALSE;
res_keyid = 0;
res_authokay = FALSE;
req_count = (int)ntohs(pkt->count);
datanotbinflag = FALSE;
datalinelen = 0;
datasent = 0;
datapt = rpkt.u.data;
dataend = &rpkt.u.data[CTL_MAX_DATA_LEN];
if ((rbufp->recv_length & 0x3) != 0)
DPRINTF(3, ("Control packet length %d unrounded\n",
rbufp->recv_length));
req_data = rbufp->recv_length - CTL_HEADER_LEN;
if (req_data < req_count || rbufp->recv_length & 0x3) {
ctl_error(CERR_BADFMT);
numctldatatooshort++;
return;
}
properlen = req_count + CTL_HEADER_LEN;
properlen = (properlen + 7) & ~7;
maclen = rbufp->recv_length - properlen;
if ((rbufp->recv_length & 3) == 0 &&
maclen >= MIN_MAC_LEN && maclen <= MAX_MAC_LEN &&
sys_authenticate) {
res_authenticate = TRUE;
pkid = (void *)((char *)pkt + properlen);
res_keyid = ntohl(*pkid);
DPRINTF(3, ("recv_len %d, properlen %d, wants auth with keyid %08x, MAC length=%zu\n",
rbufp->recv_length, properlen, res_keyid,
maclen));
if (!authistrusted(res_keyid))
DPRINTF(3, ("invalid keyid %08x\n", res_keyid));
else if (authdecrypt(res_keyid, (u_int32 *)pkt,
rbufp->recv_length - maclen,
maclen)) {
res_authokay = TRUE;
DPRINTF(3, ("authenticated okay\n"));
} else {
res_keyid = 0;
DPRINTF(3, ("authentication failed\n"));
}
}
reqpt = (char *)pkt->u.data;
reqend = reqpt + req_count;
for (cc = control_codes; cc->control_code != NO_REQUEST; cc++) {
if (cc->control_code == res_opcode) {
DPRINTF(3, ("opcode %d, found command handler\n",
res_opcode));
if (cc->flags == AUTH
&& (!res_authokay
|| res_keyid != ctl_auth_keyid)) {
ctl_error(CERR_PERMISSION);
return;
}
(cc->handler)(rbufp, restrict_mask);
return;
}
}
numctlbadop++;
ctl_error(CERR_BADOP);
return;
}
u_short
ctlpeerstatus(
register struct peer *p
)
{
u_short status;
status = p->status;
if (FLAG_CONFIG & p->flags)
status |= CTL_PST_CONFIG;
if (p->keyid)
status |= CTL_PST_AUTHENABLE;
if (FLAG_AUTHENTIC & p->flags)
status |= CTL_PST_AUTHENTIC;
if (p->reach)
status |= CTL_PST_REACH;
if (MDF_TXONLY_MASK & p->cast_flags)
status |= CTL_PST_BCAST;
return CTL_PEER_STATUS(status, p->num_events, p->last_event);
}
#ifdef REFCLOCK
static u_short
ctlclkstatus(
struct refclockstat *pcs
)
{
return CTL_PEER_STATUS(0, pcs->lastevent, pcs->currentstatus);
}
#endif
u_short
ctlsysstatus(void)
{
register u_char this_clock;
this_clock = CTL_SST_TS_UNSPEC;
#ifdef REFCLOCK
if (sys_peer != NULL) {
if (CTL_SST_TS_UNSPEC != sys_peer->sstclktype)
this_clock = sys_peer->sstclktype;
else if (sys_peer->refclktype < COUNTOF(clocktypes))
this_clock = clocktypes[sys_peer->refclktype];
}
#else
if (sys_peer != 0)
this_clock = CTL_SST_TS_NTP;
#endif
return CTL_SYS_STATUS(sys_leap, this_clock, ctl_sys_num_events,
ctl_sys_last_event);
}
static void
ctl_flushpkt(
u_char more
)
{
size_t i;
size_t dlen;
size_t sendlen;
size_t maclen;
size_t totlen;
keyid_t keyid;
dlen = datapt - rpkt.u.data;
if (!more && datanotbinflag && dlen + 2 < CTL_MAX_DATA_LEN) {
*datapt++ = '\r';
*datapt++ = '\n';
dlen += 2;
}
sendlen = dlen + CTL_HEADER_LEN;
while (sendlen & 0x3) {
*datapt++ = '\0';
sendlen++;
}
rpkt.r_m_e_op = CTL_RESPONSE | more |
(res_opcode & CTL_OP_MASK);
rpkt.count = htons((u_short)dlen);
rpkt.offset = htons((u_short)res_offset);
if (res_async) {
for (i = 0; i < COUNTOF(ctl_traps); i++) {
if (TRAP_INUSE & ctl_traps[i].tr_flags) {
rpkt.li_vn_mode =
PKT_LI_VN_MODE(
sys_leap,
ctl_traps[i].tr_version,
MODE_CONTROL);
rpkt.sequence =
htons(ctl_traps[i].tr_sequence);
sendpkt(&ctl_traps[i].tr_addr,
ctl_traps[i].tr_localaddr, -4,
(struct pkt *)&rpkt, sendlen);
if (!more)
ctl_traps[i].tr_sequence++;
numasyncmsgs++;
}
}
} else {
if (res_authenticate && sys_authenticate) {
totlen = sendlen;
while (totlen & 7) {
*datapt++ = '\0';
totlen++;
}
keyid = htonl(res_keyid);
memcpy(datapt, &keyid, sizeof(keyid));
maclen = authencrypt(res_keyid,
(u_int32 *)&rpkt, totlen);
sendpkt(rmt_addr, lcl_inter, -5,
(struct pkt *)&rpkt, totlen + maclen);
} else {
sendpkt(rmt_addr, lcl_inter, -6,
(struct pkt *)&rpkt, sendlen);
}
if (more)
numctlfrags++;
else
numctlresponses++;
}
res_frags++;
res_offset += dlen;
datapt = rpkt.u.data;
}
static void
ctl_putdata(
const char *dp,
unsigned int dlen,
int bin
)
{
int overhead;
unsigned int currentlen;
overhead = 0;
if (!bin) {
datanotbinflag = TRUE;
overhead = 3;
if (datasent) {
*datapt++ = ',';
datalinelen++;
if ((dlen + datalinelen + 1) >= MAXDATALINELEN) {
*datapt++ = '\r';
*datapt++ = '\n';
datalinelen = 0;
} else {
*datapt++ = ' ';
datalinelen++;
}
}
}
while (dlen + overhead + datapt > dataend) {
currentlen = MIN(dlen, (unsigned int)(dataend - datapt));
memcpy(datapt, dp, currentlen);
datapt += currentlen;
dp += currentlen;
dlen -= currentlen;
datalinelen += currentlen;
ctl_flushpkt(CTL_MORE);
}
memcpy(datapt, dp, dlen);
datapt += dlen;
datalinelen += dlen;
datasent = TRUE;
}
static void
ctl_putstr(
const char * tag,
const char * data,
size_t len
)
{
char buffer[512];
int rc;
INSIST(len < sizeof(buffer));
if (len)
rc = snprintf(buffer, sizeof(buffer), "%s=\"%.*s\"", tag, (int)len, data);
else
rc = snprintf(buffer, sizeof(buffer), "%s", tag);
INSIST(rc >= 0 && (size_t)rc < sizeof(buffer));
ctl_putdata(buffer, (u_int)rc, 0);
}
static void
ctl_putunqstr(
const char * tag,
const char * data,
size_t len
)
{
char buffer[512];
int rc;
INSIST(len < sizeof(buffer));
if (len)
rc = snprintf(buffer, sizeof(buffer), "%s=%.*s", tag, (int)len, data);
else
rc = snprintf(buffer, sizeof(buffer), "%s", tag);
INSIST(rc >= 0 && (size_t)rc < sizeof(buffer));
ctl_putdata(buffer, (u_int)rc, 0);
}
static void
ctl_putdblf(
const char * tag,
int use_f,
int precision,
double d
)
{
char buffer[200];
int rc;
rc = snprintf(buffer, sizeof(buffer),
(use_f ? "%s=%.*f" : "%s=%.*g"),
tag, precision, d);
INSIST(rc >= 0 && (size_t)rc < sizeof(buffer));
ctl_putdata(buffer, (u_int)rc, 0);
}
static void
ctl_putuint(
const char *tag,
u_long uval
)
{
char buffer[200];
int rc;
rc = snprintf(buffer, sizeof(buffer), "%s=%lu", tag, uval);
INSIST(rc >= 0 && rc < sizeof(buffer));
ctl_putdata(buffer, (u_int)rc, 0);
}
#ifdef AUTOKEY
static void
ctl_putcal(
const char *tag,
const struct calendar *pcal
)
{
char buffer[100];
int rc;
rc = snprintf(buffer, sizeof(buffer),
"%s=%04d%02d%02d%02d%02d",
tag,
pcal->year, pcal->month, pcal->monthday,
pcal->hour, pcal->minute
);
INSIST(rc >= 0 && (size_t)rc < sizeof(buffer));
ctl_putdata(buffer, (u_int)rc, 0);
}
#endif
static void
ctl_putfs(
const char *tag,
tstamp_t uval
)
{
char buffer[200];
struct tm *tm = NULL;
time_t fstamp;
int rc;
fstamp = (time_t)uval - JAN_1970;
tm = gmtime(&fstamp);
if (NULL == tm)
return;
rc = snprintf(buffer, sizeof(buffer),
"%s=%04d%02d%02d%02d%02d",
tag,
tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday,
tm->tm_hour, tm->tm_min);
INSIST(rc >= 0 && (size_t)rc < sizeof(buffer));
ctl_putdata(buffer, (u_int)rc, 0);
}
static void
ctl_puthex(
const char *tag,
u_long uval
)
{
char buffer[200];
int rc;
rc = snprintf(buffer, sizeof(buffer), "%s=0x%lx", tag, uval);
INSIST(rc >= 0 && (size_t)rc < sizeof(buffer));
ctl_putdata(buffer, (u_int)rc, 0);
}
static void
ctl_putint(
const char *tag,
long ival
)
{
char buffer[200];
int rc;
rc = snprintf(buffer, sizeof(buffer), "%s=%ld", tag, ival);
INSIST(rc >= 0 && rc < sizeof(buffer));
ctl_putdata(buffer, (u_int)rc, 0);
}
static void
ctl_putts(
const char *tag,
l_fp *ts
)
{
char buffer[200];
int rc;
rc = snprintf(buffer, sizeof(buffer),
"%s=0x%08lx.%08lx",
tag, (u_long)ts->l_ui, (u_long)ts->l_uf);
INSIST(rc >= 0 && (size_t)rc < sizeof(buffer));
ctl_putdata(buffer, (u_int)rc, 0);
}
static void
ctl_putadr(
const char *tag,
u_int32 addr32,
sockaddr_u *addr
)
{
const char *cq;
char buffer[200];
int rc;
if (NULL == addr)
cq = numtoa(addr32);
else
cq = stoa(addr);
rc = snprintf(buffer, sizeof(buffer), "%s=%s", tag, cq);
INSIST(rc >= 0 && (size_t)rc < sizeof(buffer));
ctl_putdata(buffer, (u_int)rc, 0);
}
static void
ctl_putrefid(
const char * tag,
u_int32 refid
)
{
char buffer[128];
int rc, i;
union {
uint32_t w;
uint8_t b[sizeof(uint32_t)];
} bytes;
bytes.w = refid;
for (i = 0; i < sizeof(bytes.b); ++i)
if (bytes.b[i] && !isprint(bytes.b[i]))
bytes.b[i] = '.';
rc = snprintf(buffer, sizeof(buffer), "%s=%.*s",
tag, (int)sizeof(bytes.b), bytes.b);
INSIST(rc >= 0 && (size_t)rc < sizeof(buffer));
ctl_putdata(buffer, (u_int)rc, FALSE);
}
static void
ctl_putarray(
const char *tag,
double *arr,
int start
)
{
char *cp, *ep;
char buffer[200];
int i, rc;
cp = buffer;
ep = buffer + sizeof(buffer);
rc = snprintf(cp, (size_t)(ep - cp), "%s=", tag);
INSIST(rc >= 0 && rc < (ep - cp));
cp += rc;
i = start;
do {
if (i == 0)
i = NTP_SHIFT;
i--;
rc = snprintf(cp, (size_t)(ep - cp), " %.2f", arr[i] * 1e3);
INSIST(rc >= 0 && rc < (ep - cp));
cp += rc;
} while (i != start);
ctl_putdata(buffer, (u_int)(cp - buffer), 0);
}
static void
ctl_printf(
const char * fmt,
...
)
{
static const char * ellipsis = "[...]";
va_list va;
char fmtbuf[128];
int rc;
va_start(va, fmt);
rc = vsnprintf(fmtbuf, sizeof(fmtbuf), fmt, va);
va_end(va);
if (rc < 0 || rc >= sizeof(fmtbuf))
strcpy(fmtbuf + sizeof(fmtbuf) - strlen(ellipsis) - 1,
ellipsis);
ctl_putdata(fmtbuf, strlen(fmtbuf), 0);
}
static void
ctl_putsys(
int varid
)
{
l_fp tmp;
char str[256];
u_int u;
double kb;
double dtemp;
const char *ss;
#ifdef AUTOKEY
struct cert_info *cp;
#endif
#ifdef KERNEL_PLL
static struct timex ntx;
static u_long ntp_adjtime_time;
static const double to_ms =
# ifdef STA_NANO
1.0e-6;
# else
1.0e-3;
# endif
if (CS_KERN_FIRST <= varid && varid <= CS_KERN_LAST &&
current_time != ntp_adjtime_time) {
ZERO(ntx);
if (ntp_adjtime(&ntx) < 0)
msyslog(LOG_ERR, "ntp_adjtime() for mode 6 query failed: %m");
else
ntp_adjtime_time = current_time;
}
#endif
switch (varid) {
case CS_LEAP:
ctl_putuint(sys_var[CS_LEAP].text, sys_leap);
break;
case CS_STRATUM:
ctl_putuint(sys_var[CS_STRATUM].text, sys_stratum);
break;
case CS_PRECISION:
ctl_putint(sys_var[CS_PRECISION].text, sys_precision);
break;
case CS_ROOTDELAY:
ctl_putdbl(sys_var[CS_ROOTDELAY].text, sys_rootdelay *
1e3);
break;
case CS_ROOTDISPERSION:
ctl_putdbl(sys_var[CS_ROOTDISPERSION].text,
sys_rootdisp * 1e3);
break;
case CS_REFID:
if (sys_stratum > 1 && sys_stratum < STRATUM_UNSPEC)
ctl_putadr(sys_var[varid].text, sys_refid, NULL);
else
ctl_putrefid(sys_var[varid].text, sys_refid);
break;
case CS_REFTIME:
ctl_putts(sys_var[CS_REFTIME].text, &sys_reftime);
break;
case CS_POLL:
ctl_putuint(sys_var[CS_POLL].text, sys_poll);
break;
case CS_PEERID:
if (sys_peer == NULL)
ctl_putuint(sys_var[CS_PEERID].text, 0);
else
ctl_putuint(sys_var[CS_PEERID].text,
sys_peer->associd);
break;
case CS_PEERADR:
if (sys_peer != NULL && sys_peer->dstadr != NULL)
ss = sptoa(&sys_peer->srcadr);
else
ss = "0.0.0.0:0";
ctl_putunqstr(sys_var[CS_PEERADR].text, ss, strlen(ss));
break;
case CS_PEERMODE:
u = (sys_peer != NULL)
? sys_peer->hmode
: MODE_UNSPEC;
ctl_putuint(sys_var[CS_PEERMODE].text, u);
break;
case CS_OFFSET:
ctl_putdbl6(sys_var[CS_OFFSET].text, last_offset * 1e3);
break;
case CS_DRIFT:
ctl_putdbl(sys_var[CS_DRIFT].text, drift_comp * 1e6);
break;
case CS_JITTER:
ctl_putdbl6(sys_var[CS_JITTER].text, sys_jitter * 1e3);
break;
case CS_ERROR:
ctl_putdbl(sys_var[CS_ERROR].text, clock_jitter * 1e3);
break;
case CS_CLOCK:
get_systime(&tmp);
ctl_putts(sys_var[CS_CLOCK].text, &tmp);
break;
case CS_PROCESSOR:
#ifndef HAVE_UNAME
ctl_putstr(sys_var[CS_PROCESSOR].text, str_processor,
sizeof(str_processor) - 1);
#else
ctl_putstr(sys_var[CS_PROCESSOR].text,
utsnamebuf.machine, strlen(utsnamebuf.machine));
#endif
break;
case CS_SYSTEM:
#ifndef HAVE_UNAME
ctl_putstr(sys_var[CS_SYSTEM].text, str_system,
sizeof(str_system) - 1);
#else
snprintf(str, sizeof(str), "%s/%s", utsnamebuf.sysname,
utsnamebuf.release);
ctl_putstr(sys_var[CS_SYSTEM].text, str, strlen(str));
#endif
break;
case CS_VERSION:
ctl_putstr(sys_var[CS_VERSION].text, Version,
strlen(Version));
break;
case CS_STABIL:
ctl_putdbl(sys_var[CS_STABIL].text, clock_stability *
1e6);
break;
case CS_VARLIST:
{
char buf[CTL_MAX_DATA_LEN];
char *buffp, *buffend;
int firstVarName;
const char *ss1;
int len;
const struct ctl_var *k;
buffp = buf;
buffend = buf + sizeof(buf);
if (strlen(sys_var[CS_VARLIST].text) > (sizeof(buf) - 4))
break;
snprintf(buffp, sizeof(buf), "%s=\"",sys_var[CS_VARLIST].text);
buffp += strlen(buffp);
firstVarName = TRUE;
for (k = sys_var; !(k->flags & EOV); k++) {
if (k->flags & PADDING)
continue;
len = strlen(k->text);
if (len + 1 >= buffend - buffp)
break;
if (!firstVarName)
*buffp++ = ',';
else
firstVarName = FALSE;
memcpy(buffp, k->text, len);
buffp += len;
}
for (k = ext_sys_var; k && !(k->flags & EOV); k++) {
if (k->flags & PADDING)
continue;
if (NULL == k->text)
continue;
ss1 = strchr(k->text, '=');
if (NULL == ss1)
len = strlen(k->text);
else
len = ss1 - k->text;
if (len + 1 >= buffend - buffp)
break;
if (firstVarName) {
*buffp++ = ',';
firstVarName = FALSE;
}
memcpy(buffp, k->text,(unsigned)len);
buffp += len;
}
if (2 >= buffend - buffp)
break;
*buffp++ = '"';
*buffp = '\0';
ctl_putdata(buf, (unsigned)( buffp - buf ), 0);
break;
}
case CS_TAI:
if (sys_tai > 0)
ctl_putuint(sys_var[CS_TAI].text, sys_tai);
break;
case CS_LEAPTAB:
{
leap_signature_t lsig;
leapsec_getsig(&lsig);
if (lsig.ttime > 0)
ctl_putfs(sys_var[CS_LEAPTAB].text, lsig.ttime);
break;
}
case CS_LEAPEND:
{
leap_signature_t lsig;
leapsec_getsig(&lsig);
if (lsig.etime > 0)
ctl_putfs(sys_var[CS_LEAPEND].text, lsig.etime);
break;
}
#ifdef LEAP_SMEAR
case CS_LEAPSMEARINTV:
if (leap_smear_intv > 0)
ctl_putuint(sys_var[CS_LEAPSMEARINTV].text, leap_smear_intv);
break;
case CS_LEAPSMEAROFFS:
if (leap_smear_intv > 0)
ctl_putdbl(sys_var[CS_LEAPSMEAROFFS].text,
leap_smear.doffset * 1e3);
break;
#endif
case CS_RATE:
ctl_putuint(sys_var[CS_RATE].text, ntp_minpoll);
break;
case CS_MRU_ENABLED:
ctl_puthex(sys_var[varid].text, mon_enabled);
break;
case CS_MRU_DEPTH:
ctl_putuint(sys_var[varid].text, mru_entries);
break;
case CS_MRU_MEM:
kb = mru_entries * (sizeof(mon_entry) / 1024.);
u = (u_int)kb;
if (kb - u >= 0.5)
u++;
ctl_putuint(sys_var[varid].text, u);
break;
case CS_MRU_DEEPEST:
ctl_putuint(sys_var[varid].text, mru_peakentries);
break;
case CS_MRU_MINDEPTH:
ctl_putuint(sys_var[varid].text, mru_mindepth);
break;
case CS_MRU_MAXAGE:
ctl_putint(sys_var[varid].text, mru_maxage);
break;
case CS_MRU_MAXDEPTH:
ctl_putuint(sys_var[varid].text, mru_maxdepth);
break;
case CS_MRU_MAXMEM:
kb = mru_maxdepth * (sizeof(mon_entry) / 1024.);
u = (u_int)kb;
if (kb - u >= 0.5)
u++;
ctl_putuint(sys_var[varid].text, u);
break;
case CS_SS_UPTIME:
ctl_putuint(sys_var[varid].text, current_time);
break;
case CS_SS_RESET:
ctl_putuint(sys_var[varid].text,
current_time - sys_stattime);
break;
case CS_SS_RECEIVED:
ctl_putuint(sys_var[varid].text, sys_received);
break;
case CS_SS_THISVER:
ctl_putuint(sys_var[varid].text, sys_newversion);
break;
case CS_SS_OLDVER:
ctl_putuint(sys_var[varid].text, sys_oldversion);
break;
case CS_SS_BADFORMAT:
ctl_putuint(sys_var[varid].text, sys_badlength);
break;
case CS_SS_BADAUTH:
ctl_putuint(sys_var[varid].text, sys_badauth);
break;
case CS_SS_DECLINED:
ctl_putuint(sys_var[varid].text, sys_declined);
break;
case CS_SS_RESTRICTED:
ctl_putuint(sys_var[varid].text, sys_restricted);
break;
case CS_SS_LIMITED:
ctl_putuint(sys_var[varid].text, sys_limitrejected);
break;
case CS_SS_KODSENT:
ctl_putuint(sys_var[varid].text, sys_kodsent);
break;
case CS_SS_PROCESSED:
ctl_putuint(sys_var[varid].text, sys_processed);
break;
case CS_BCASTDELAY:
ctl_putdbl(sys_var[varid].text, sys_bdelay * 1e3);
break;
case CS_AUTHDELAY:
LFPTOD(&sys_authdelay, dtemp);
ctl_putdbl(sys_var[varid].text, dtemp * 1e3);
break;
case CS_AUTHKEYS:
ctl_putuint(sys_var[varid].text, authnumkeys);
break;
case CS_AUTHFREEK:
ctl_putuint(sys_var[varid].text, authnumfreekeys);
break;
case CS_AUTHKLOOKUPS:
ctl_putuint(sys_var[varid].text, authkeylookups);
break;
case CS_AUTHKNOTFOUND:
ctl_putuint(sys_var[varid].text, authkeynotfound);
break;
case CS_AUTHKUNCACHED:
ctl_putuint(sys_var[varid].text, authkeyuncached);
break;
case CS_AUTHKEXPIRED:
ctl_putuint(sys_var[varid].text, authkeyexpired);
break;
case CS_AUTHENCRYPTS:
ctl_putuint(sys_var[varid].text, authencryptions);
break;
case CS_AUTHDECRYPTS:
ctl_putuint(sys_var[varid].text, authdecryptions);
break;
case CS_AUTHRESET:
ctl_putuint(sys_var[varid].text,
current_time - auth_timereset);
break;
#ifndef KERNEL_PLL
# define CTL_IF_KERNLOOP(putfunc, args) \
ctl_putint(sys_var[varid].text, 0)
#else
# define CTL_IF_KERNLOOP(putfunc, args) \
putfunc args
#endif
#ifndef KERNEL_PLL
# define CTL_IF_KERNPPS(putfunc, args) \
ctl_putint(sys_var[varid].text, 0)
#else
# define CTL_IF_KERNPPS(putfunc, args) \
if (0 == ntx.shift) \
ctl_putint(sys_var[varid].text, 0); \
else \
putfunc args
#endif
case CS_K_OFFSET:
CTL_IF_KERNLOOP(
ctl_putdblf,
(sys_var[varid].text, 0, -1, to_ms * ntx.offset)
);
break;
case CS_K_FREQ:
CTL_IF_KERNLOOP(
ctl_putsfp,
(sys_var[varid].text, ntx.freq)
);
break;
case CS_K_MAXERR:
CTL_IF_KERNLOOP(
ctl_putdblf,
(sys_var[varid].text, 0, 6,
to_ms * ntx.maxerror)
);
break;
case CS_K_ESTERR:
CTL_IF_KERNLOOP(
ctl_putdblf,
(sys_var[varid].text, 0, 6,
to_ms * ntx.esterror)
);
break;
case CS_K_STFLAGS:
#ifndef KERNEL_PLL
ss = "";
#else
ss = k_st_flags(ntx.status);
#endif
ctl_putstr(sys_var[varid].text, ss, strlen(ss));
break;
case CS_K_TIMECONST:
CTL_IF_KERNLOOP(
ctl_putint,
(sys_var[varid].text, ntx.constant)
);
break;
case CS_K_PRECISION:
CTL_IF_KERNLOOP(
ctl_putdblf,
(sys_var[varid].text, 0, 6,
to_ms * ntx.precision)
);
break;
case CS_K_FREQTOL:
CTL_IF_KERNLOOP(
ctl_putsfp,
(sys_var[varid].text, ntx.tolerance)
);
break;
case CS_K_PPS_FREQ:
CTL_IF_KERNPPS(
ctl_putsfp,
(sys_var[varid].text, ntx.ppsfreq)
);
break;
case CS_K_PPS_STABIL:
CTL_IF_KERNPPS(
ctl_putsfp,
(sys_var[varid].text, ntx.stabil)
);
break;
case CS_K_PPS_JITTER:
CTL_IF_KERNPPS(
ctl_putdbl,
(sys_var[varid].text, to_ms * ntx.jitter)
);
break;
case CS_K_PPS_CALIBDUR:
CTL_IF_KERNPPS(
ctl_putint,
(sys_var[varid].text, 1 << ntx.shift)
);
break;
case CS_K_PPS_CALIBS:
CTL_IF_KERNPPS(
ctl_putint,
(sys_var[varid].text, ntx.calcnt)
);
break;
case CS_K_PPS_CALIBERRS:
CTL_IF_KERNPPS(
ctl_putint,
(sys_var[varid].text, ntx.errcnt)
);
break;
case CS_K_PPS_JITEXC:
CTL_IF_KERNPPS(
ctl_putint,
(sys_var[varid].text, ntx.jitcnt)
);
break;
case CS_K_PPS_STBEXC:
CTL_IF_KERNPPS(
ctl_putint,
(sys_var[varid].text, ntx.stbcnt)
);
break;
case CS_IOSTATS_RESET:
ctl_putuint(sys_var[varid].text,
current_time - io_timereset);
break;
case CS_TOTAL_RBUF:
ctl_putuint(sys_var[varid].text, total_recvbuffs());
break;
case CS_FREE_RBUF:
ctl_putuint(sys_var[varid].text, free_recvbuffs());
break;
case CS_USED_RBUF:
ctl_putuint(sys_var[varid].text, full_recvbuffs());
break;
case CS_RBUF_LOWATER:
ctl_putuint(sys_var[varid].text, lowater_additions());
break;
case CS_IO_DROPPED:
ctl_putuint(sys_var[varid].text, packets_dropped);
break;
case CS_IO_IGNORED:
ctl_putuint(sys_var[varid].text, packets_ignored);
break;
case CS_IO_RECEIVED:
ctl_putuint(sys_var[varid].text, packets_received);
break;
case CS_IO_SENT:
ctl_putuint(sys_var[varid].text, packets_sent);
break;
case CS_IO_SENDFAILED:
ctl_putuint(sys_var[varid].text, packets_notsent);
break;
case CS_IO_WAKEUPS:
ctl_putuint(sys_var[varid].text, handler_calls);
break;
case CS_IO_GOODWAKEUPS:
ctl_putuint(sys_var[varid].text, handler_pkts);
break;
case CS_TIMERSTATS_RESET:
ctl_putuint(sys_var[varid].text,
current_time - timer_timereset);
break;
case CS_TIMER_OVERRUNS:
ctl_putuint(sys_var[varid].text, alarm_overflow);
break;
case CS_TIMER_XMTS:
ctl_putuint(sys_var[varid].text, timer_xmtcalls);
break;
case CS_FUZZ:
ctl_putdbl(sys_var[varid].text, sys_fuzz * 1e3);
break;
case CS_WANDER_THRESH:
ctl_putdbl(sys_var[varid].text, wander_threshold * 1e6);
break;
#ifdef AUTOKEY
case CS_FLAGS:
if (crypto_flags)
ctl_puthex(sys_var[CS_FLAGS].text,
crypto_flags);
break;
case CS_DIGEST:
if (crypto_flags) {
strlcpy(str, OBJ_nid2ln(crypto_nid),
COUNTOF(str));
ctl_putstr(sys_var[CS_DIGEST].text, str,
strlen(str));
}
break;
case CS_SIGNATURE:
if (crypto_flags) {
const EVP_MD *dp;
dp = EVP_get_digestbynid(crypto_flags >> 16);
strlcpy(str, OBJ_nid2ln(EVP_MD_pkey_type(dp)),
COUNTOF(str));
ctl_putstr(sys_var[CS_SIGNATURE].text, str,
strlen(str));
}
break;
case CS_HOST:
if (hostval.ptr != NULL)
ctl_putstr(sys_var[CS_HOST].text, hostval.ptr,
strlen(hostval.ptr));
break;
case CS_IDENT:
if (sys_ident != NULL)
ctl_putstr(sys_var[CS_IDENT].text, sys_ident,
strlen(sys_ident));
break;
case CS_CERTIF:
for (cp = cinfo; cp != NULL; cp = cp->link) {
snprintf(str, sizeof(str), "%s %s 0x%x",
cp->subject, cp->issuer, cp->flags);
ctl_putstr(sys_var[CS_CERTIF].text, str,
strlen(str));
ctl_putcal(sys_var[CS_REVTIME].text, &(cp->last));
}
break;
case CS_PUBLIC:
if (hostval.tstamp != 0)
ctl_putfs(sys_var[CS_PUBLIC].text,
ntohl(hostval.tstamp));
break;
#endif
default:
break;
}
}
static void
ctl_putpeer(
int id,
struct peer *p
)
{
char buf[CTL_MAX_DATA_LEN];
char *s;
char *t;
char *be;
int i;
const struct ctl_var *k;
#ifdef AUTOKEY
struct autokey *ap;
const EVP_MD *dp;
const char *str;
#endif
switch (id) {
case CP_CONFIG:
ctl_putuint(peer_var[id].text,
!(FLAG_PREEMPT & p->flags));
break;
case CP_AUTHENABLE:
ctl_putuint(peer_var[id].text, !(p->keyid));
break;
case CP_AUTHENTIC:
ctl_putuint(peer_var[id].text,
!!(FLAG_AUTHENTIC & p->flags));
break;
case CP_SRCADR:
ctl_putadr(peer_var[id].text, 0, &p->srcadr);
break;
case CP_SRCPORT:
ctl_putuint(peer_var[id].text, SRCPORT(&p->srcadr));
break;
case CP_SRCHOST:
if (p->hostname != NULL)
ctl_putstr(peer_var[id].text, p->hostname,
strlen(p->hostname));
break;
case CP_DSTADR:
ctl_putadr(peer_var[id].text, 0,
(p->dstadr != NULL)
? &p->dstadr->sin
: NULL);
break;
case CP_DSTPORT:
ctl_putuint(peer_var[id].text,
(p->dstadr != NULL)
? SRCPORT(&p->dstadr->sin)
: 0);
break;
case CP_IN:
if (p->r21 > 0.)
ctl_putdbl(peer_var[id].text, p->r21 / 1e3);
break;
case CP_OUT:
if (p->r34 > 0.)
ctl_putdbl(peer_var[id].text, p->r34 / 1e3);
break;
case CP_RATE:
ctl_putuint(peer_var[id].text, p->throttle);
break;
case CP_LEAP:
ctl_putuint(peer_var[id].text, p->leap);
break;
case CP_HMODE:
ctl_putuint(peer_var[id].text, p->hmode);
break;
case CP_STRATUM:
ctl_putuint(peer_var[id].text, p->stratum);
break;
case CP_PPOLL:
ctl_putuint(peer_var[id].text, p->ppoll);
break;
case CP_HPOLL:
ctl_putuint(peer_var[id].text, p->hpoll);
break;
case CP_PRECISION:
ctl_putint(peer_var[id].text, p->precision);
break;
case CP_ROOTDELAY:
ctl_putdbl(peer_var[id].text, p->rootdelay * 1e3);
break;
case CP_ROOTDISPERSION:
ctl_putdbl(peer_var[id].text, p->rootdisp * 1e3);
break;
case CP_REFID:
#ifdef REFCLOCK
if (p->flags & FLAG_REFCLOCK) {
ctl_putrefid(peer_var[id].text, p->refid);
break;
}
#endif
if (p->stratum > 1 && p->stratum < STRATUM_UNSPEC)
ctl_putadr(peer_var[id].text, p->refid,
NULL);
else
ctl_putrefid(peer_var[id].text, p->refid);
break;
case CP_REFTIME:
ctl_putts(peer_var[id].text, &p->reftime);
break;
case CP_ORG:
ctl_putts(peer_var[id].text, &p->aorg);
break;
case CP_REC:
ctl_putts(peer_var[id].text, &p->dst);
break;
case CP_XMT:
if (p->xleave)
ctl_putdbl(peer_var[id].text, p->xleave * 1e3);
break;
case CP_BIAS:
if (p->bias != 0.)
ctl_putdbl(peer_var[id].text, p->bias * 1e3);
break;
case CP_REACH:
ctl_puthex(peer_var[id].text, p->reach);
break;
case CP_FLASH:
ctl_puthex(peer_var[id].text, p->flash);
break;
case CP_TTL:
#ifdef REFCLOCK
if (p->flags & FLAG_REFCLOCK) {
ctl_putuint(peer_var[id].text, p->ttl);
break;
}
#endif
if (p->ttl > 0 && p->ttl < COUNTOF(sys_ttl))
ctl_putint(peer_var[id].text,
sys_ttl[p->ttl]);
break;
case CP_UNREACH:
ctl_putuint(peer_var[id].text, p->unreach);
break;
case CP_TIMER:
ctl_putuint(peer_var[id].text,
p->nextdate - current_time);
break;
case CP_DELAY:
ctl_putdbl(peer_var[id].text, p->delay * 1e3);
break;
case CP_OFFSET:
ctl_putdbl(peer_var[id].text, p->offset * 1e3);
break;
case CP_JITTER:
ctl_putdbl(peer_var[id].text, p->jitter * 1e3);
break;
case CP_DISPERSION:
ctl_putdbl(peer_var[id].text, p->disp * 1e3);
break;
case CP_KEYID:
if (p->keyid > NTP_MAXKEY)
ctl_puthex(peer_var[id].text, p->keyid);
else
ctl_putuint(peer_var[id].text, p->keyid);
break;
case CP_FILTDELAY:
ctl_putarray(peer_var[id].text, p->filter_delay,
p->filter_nextpt);
break;
case CP_FILTOFFSET:
ctl_putarray(peer_var[id].text, p->filter_offset,
p->filter_nextpt);
break;
case CP_FILTERROR:
ctl_putarray(peer_var[id].text, p->filter_disp,
p->filter_nextpt);
break;
case CP_PMODE:
ctl_putuint(peer_var[id].text, p->pmode);
break;
case CP_RECEIVED:
ctl_putuint(peer_var[id].text, p->received);
break;
case CP_SENT:
ctl_putuint(peer_var[id].text, p->sent);
break;
case CP_VARLIST:
s = buf;
be = buf + sizeof(buf);
if (strlen(peer_var[id].text) + 4 > sizeof(buf))
break;
snprintf(s, sizeof(buf), "%s=\"", peer_var[id].text);
s += strlen(s);
t = s;
for (k = peer_var; !(EOV & k->flags); k++) {
if (PADDING & k->flags)
continue;
i = strlen(k->text);
if (s + i + 1 >= be)
break;
if (s != t)
*s++ = ',';
memcpy(s, k->text, i);
s += i;
}
if (s + 2 < be) {
*s++ = '"';
*s = '\0';
ctl_putdata(buf, (u_int)(s - buf), 0);
}
break;
case CP_TIMEREC:
ctl_putuint(peer_var[id].text,
current_time - p->timereceived);
break;
case CP_TIMEREACH:
ctl_putuint(peer_var[id].text,
current_time - p->timereachable);
break;
case CP_BADAUTH:
ctl_putuint(peer_var[id].text, p->badauth);
break;
case CP_BOGUSORG:
ctl_putuint(peer_var[id].text, p->bogusorg);
break;
case CP_OLDPKT:
ctl_putuint(peer_var[id].text, p->oldpkt);
break;
case CP_SELDISP:
ctl_putuint(peer_var[id].text, p->seldisptoolarge);
break;
case CP_SELBROKEN:
ctl_putuint(peer_var[id].text, p->selbroken);
break;
case CP_CANDIDATE:
ctl_putuint(peer_var[id].text, p->status);
break;
#ifdef AUTOKEY
case CP_FLAGS:
if (p->crypto)
ctl_puthex(peer_var[id].text, p->crypto);
break;
case CP_SIGNATURE:
if (p->crypto) {
dp = EVP_get_digestbynid(p->crypto >> 16);
str = OBJ_nid2ln(EVP_MD_pkey_type(dp));
ctl_putstr(peer_var[id].text, str, strlen(str));
}
break;
case CP_HOST:
if (p->subject != NULL)
ctl_putstr(peer_var[id].text, p->subject,
strlen(p->subject));
break;
case CP_VALID:
break;
case CP_INITSEQ:
if (NULL == (ap = p->recval.ptr))
break;
ctl_putint(peer_var[CP_INITSEQ].text, ap->seq);
ctl_puthex(peer_var[CP_INITKEY].text, ap->key);
ctl_putfs(peer_var[CP_INITTSP].text,
ntohl(p->recval.tstamp));
break;
case CP_IDENT:
if (p->ident != NULL)
ctl_putstr(peer_var[id].text, p->ident,
strlen(p->ident));
break;
#endif
}
}
#ifdef REFCLOCK
static void
ctl_putclock(
int id,
struct refclockstat *pcs,
int mustput
)
{
char buf[CTL_MAX_DATA_LEN];
char *s, *t, *be;
const char *ss;
int i;
const struct ctl_var *k;
switch (id) {
case CC_TYPE:
if (mustput || pcs->clockdesc == NULL
|| *(pcs->clockdesc) == '\0') {
ctl_putuint(clock_var[id].text, pcs->type);
}
break;
case CC_TIMECODE:
ctl_putstr(clock_var[id].text,
pcs->p_lastcode,
(unsigned)pcs->lencode);
break;
case CC_POLL:
ctl_putuint(clock_var[id].text, pcs->polls);
break;
case CC_NOREPLY:
ctl_putuint(clock_var[id].text,
pcs->noresponse);
break;
case CC_BADFORMAT:
ctl_putuint(clock_var[id].text,
pcs->badformat);
break;
case CC_BADDATA:
ctl_putuint(clock_var[id].text,
pcs->baddata);
break;
case CC_FUDGETIME1:
if (mustput || (pcs->haveflags & CLK_HAVETIME1))
ctl_putdbl(clock_var[id].text,
pcs->fudgetime1 * 1e3);
break;
case CC_FUDGETIME2:
if (mustput || (pcs->haveflags & CLK_HAVETIME2))
ctl_putdbl(clock_var[id].text,
pcs->fudgetime2 * 1e3);
break;
case CC_FUDGEVAL1:
if (mustput || (pcs->haveflags & CLK_HAVEVAL1))
ctl_putint(clock_var[id].text,
pcs->fudgeval1);
break;
case CC_FUDGEVAL2:
if (mustput || (pcs->haveflags & CLK_HAVEVAL2)) {
if (pcs->fudgeval1 > 1)
ctl_putadr(clock_var[id].text,
pcs->fudgeval2, NULL);
else
ctl_putrefid(clock_var[id].text,
pcs->fudgeval2);
}
break;
case CC_FLAGS:
ctl_putuint(clock_var[id].text, pcs->flags);
break;
case CC_DEVICE:
if (pcs->clockdesc == NULL ||
*(pcs->clockdesc) == '\0') {
if (mustput)
ctl_putstr(clock_var[id].text,
"", 0);
} else {
ctl_putstr(clock_var[id].text,
pcs->clockdesc,
strlen(pcs->clockdesc));
}
break;
case CC_VARLIST:
s = buf;
be = buf + sizeof(buf);
if (strlen(clock_var[CC_VARLIST].text) + 4 >
sizeof(buf))
break;
snprintf(s, sizeof(buf), "%s=\"",
clock_var[CC_VARLIST].text);
s += strlen(s);
t = s;
for (k = clock_var; !(EOV & k->flags); k++) {
if (PADDING & k->flags)
continue;
i = strlen(k->text);
if (s + i + 1 >= be)
break;
if (s != t)
*s++ = ',';
memcpy(s, k->text, i);
s += i;
}
for (k = pcs->kv_list; k && !(EOV & k->flags); k++) {
if (PADDING & k->flags)
continue;
ss = k->text;
if (NULL == ss)
continue;
while (*ss && *ss != '=')
ss++;
i = ss - k->text;
if (s + i + 1 >= be)
break;
if (s != t)
*s++ = ',';
memcpy(s, k->text, (unsigned)i);
s += i;
*s = '\0';
}
if (s + 2 >= be)
break;
*s++ = '"';
*s = '\0';
ctl_putdata(buf, (unsigned)(s - buf), 0);
break;
}
}
#endif
static const struct ctl_var *
ctl_getitem(
const struct ctl_var *var_list,
char **data
)
{
static const struct ctl_var eol = { 0, EOV, NULL };
static char buf[128];
static u_long quiet_until;
const struct ctl_var *v;
char *cp;
char *tp;
while (reqpt < reqend && (*reqpt == ',' ||
isspace((unsigned char)*reqpt)))
reqpt++;
if (reqpt >= reqend)
return NULL;
for (tp = NULL, cp = reqpt; cp != reqend; ++cp) {
if (*cp == '=' && tp == NULL)
tp = cp;
if (*cp == ',')
break;
}
*data = NULL;
if (NULL != tp) {
const char *plhead = tp + 1;
const char *pltail = cp;
size_t plsize;
while (plhead != pltail && isspace((u_char)plhead[0]))
++plhead;
while (plhead != pltail && isspace((u_char)pltail[-1]))
--pltail;
plsize = (size_t)(pltail - plhead);
if (plsize >= sizeof(buf))
goto badpacket;
memcpy(buf, plhead, plsize);
buf[plsize] = '\0';
*data = buf;
} else {
tp = cp;
}
if (NULL == var_list)
return &eol;
for (v = var_list; !(EOV & v->flags); ++v)
if (!(PADDING & v->flags)) {
const char *sp1 = reqpt;
const char *sp2 = v->text;
while ((sp1 != tp) && (*sp1 == *sp2)) {
++sp1;
++sp2;
}
if (sp1 == tp && (*sp2 == '\0' || *sp2 == '='))
break;
}
if (EOV & v->flags)
*data = NULL;
else
reqpt = cp + (cp != reqend);
return v;
badpacket:
numctlbadpkts++;
NLOG(NLOG_SYSEVENT)
if (quiet_until <= current_time) {
quiet_until = current_time + 300;
msyslog(LOG_WARNING,
"Possible 'ntpdx' exploit from %s#%u (possibly spoofed)",
stoa(rmt_addr), SRCPORT(rmt_addr));
}
reqpt = reqend;
return NULL;
}
static void
control_unspec(
struct recvbuf *rbufp,
int restrict_mask
)
{
struct peer *peer;
if (res_associd) {
peer = findpeerbyassoc(res_associd);
if (NULL == peer) {
ctl_error(CERR_BADASSOC);
return;
}
rpkt.status = htons(ctlpeerstatus(peer));
} else
rpkt.status = htons(ctlsysstatus());
ctl_flushpkt(0);
}
static void
read_status(
struct recvbuf *rbufp,
int restrict_mask
)
{
struct peer *peer;
const u_char *cp;
size_t n;
u_short a_st[CTL_MAX_DATA_LEN / sizeof(u_short)];
#ifdef DEBUG
if (debug > 2)
printf("read_status: ID %d\n", res_associd);
#endif
if (res_associd) {
peer = findpeerbyassoc(res_associd);
if (NULL == peer) {
ctl_error(CERR_BADASSOC);
return;
}
rpkt.status = htons(ctlpeerstatus(peer));
if (res_authokay)
peer->num_events = 0;
for (cp = def_peer_var; *cp != 0; cp++)
ctl_putpeer((int)*cp, peer);
ctl_flushpkt(0);
return;
}
n = 0;
rpkt.status = htons(ctlsysstatus());
for (peer = peer_list; peer != NULL; peer = peer->p_link) {
a_st[n++] = htons(peer->associd);
a_st[n++] = htons(ctlpeerstatus(peer));
if (n + 1 >= COUNTOF(a_st)) {
ctl_putdata((void *)a_st, n * sizeof(a_st[0]),
1);
n = 0;
}
}
if (n)
ctl_putdata((void *)a_st, n * sizeof(a_st[0]), 1);
ctl_flushpkt(0);
}
static void
read_peervars(void)
{
const struct ctl_var *v;
struct peer *peer;
const u_char *cp;
size_t i;
char * valuep;
u_char wants[CP_MAXCODE + 1];
u_int gotvar;
peer = findpeerbyassoc(res_associd);
if (NULL == peer) {
ctl_error(CERR_BADASSOC);
return;
}
rpkt.status = htons(ctlpeerstatus(peer));
if (res_authokay)
peer->num_events = 0;
ZERO(wants);
gotvar = 0;
while (NULL != (v = ctl_getitem(peer_var, &valuep))) {
if (v->flags & EOV) {
ctl_error(CERR_UNKNOWNVAR);
return;
}
INSIST(v->code < COUNTOF(wants));
wants[v->code] = 1;
gotvar = 1;
}
if (gotvar) {
for (i = 1; i < COUNTOF(wants); i++)
if (wants[i])
ctl_putpeer(i, peer);
} else
for (cp = def_peer_var; *cp != 0; cp++)
ctl_putpeer((int)*cp, peer);
ctl_flushpkt(0);
}
static void
read_sysvars(void)
{
const struct ctl_var *v;
struct ctl_var *kv;
u_int n;
u_int gotvar;
const u_char *cs;
char * valuep;
const char * pch;
u_char *wants;
size_t wants_count;
rpkt.status = htons(ctlsysstatus());
if (res_authokay)
ctl_sys_num_events = 0;
wants_count = CS_MAXCODE + 1 + count_var(ext_sys_var);
wants = emalloc_zero(wants_count);
gotvar = 0;
while (NULL != (v = ctl_getitem(sys_var, &valuep))) {
if (!(EOV & v->flags)) {
INSIST(v->code < wants_count);
wants[v->code] = 1;
gotvar = 1;
} else {
v = ctl_getitem(ext_sys_var, &valuep);
if (NULL == v) {
ctl_error(CERR_BADVALUE);
free(wants);
return;
}
if (EOV & v->flags) {
ctl_error(CERR_UNKNOWNVAR);
free(wants);
return;
}
n = v->code + CS_MAXCODE + 1;
INSIST(n < wants_count);
wants[n] = 1;
gotvar = 1;
}
}
if (gotvar) {
for (n = 1; n <= CS_MAXCODE; n++)
if (wants[n])
ctl_putsys(n);
for (n = 0; n + CS_MAXCODE + 1 < wants_count; n++)
if (wants[n + CS_MAXCODE + 1]) {
pch = ext_sys_var[n].text;
ctl_putdata(pch, strlen(pch), 0);
}
} else {
for (cs = def_sys_var; *cs != 0; cs++)
ctl_putsys((int)*cs);
for (kv = ext_sys_var; kv && !(EOV & kv->flags); kv++)
if (DEF & kv->flags)
ctl_putdata(kv->text, strlen(kv->text),
0);
}
free(wants);
ctl_flushpkt(0);
}
static void
read_variables(
struct recvbuf *rbufp,
int restrict_mask
)
{
if (res_associd)
read_peervars();
else
read_sysvars();
}
static void
write_variables(
struct recvbuf *rbufp,
int restrict_mask
)
{
const struct ctl_var *v;
int ext_var;
char *valuep;
long val;
size_t octets;
char *vareqv;
const char *t;
char *tt;
val = 0;
if (res_associd != 0) {
ctl_error(CERR_PERMISSION);
return;
}
rpkt.status = htons(ctlsysstatus());
while ((v = ctl_getitem(sys_var, &valuep)) != 0) {
ext_var = 0;
if (v->flags & EOV) {
if ((v = ctl_getitem(ext_sys_var, &valuep)) !=
0) {
if (v->flags & EOV) {
ctl_error(CERR_UNKNOWNVAR);
return;
}
ext_var = 1;
} else {
break;
}
}
if (!(v->flags & CAN_WRITE)) {
ctl_error(CERR_PERMISSION);
return;
}
if (!ext_var && (*valuep == '\0' || !atoint(valuep,
&val))) {
ctl_error(CERR_BADFMT);
return;
}
if (!ext_var && (val & ~LEAP_NOTINSYNC) != 0) {
ctl_error(CERR_BADVALUE);
return;
}
if (ext_var) {
octets = strlen(v->text) + strlen(valuep) + 2;
vareqv = emalloc(octets);
tt = vareqv;
t = v->text;
while (*t && *t != '=')
*tt++ = *t++;
*tt++ = '=';
memcpy(tt, valuep, 1 + strlen(valuep));
set_sys_var(vareqv, 1 + strlen(vareqv), v->flags);
free(vareqv);
} else {
ctl_error(CERR_UNSPEC);
return;
}
}
ctl_flushpkt(0);
}
static void configure(
struct recvbuf *rbufp,
int restrict_mask
)
{
size_t data_count;
int retval;
if (res_associd != 0) {
ctl_error(CERR_BADVALUE);
return;
}
if (RES_NOMODIFY & restrict_mask) {
snprintf(remote_config.err_msg,
sizeof(remote_config.err_msg),
"runtime configuration prohibited by restrict ... nomodify");
ctl_putdata(remote_config.err_msg,
strlen(remote_config.err_msg), 0);
ctl_flushpkt(0);
NLOG(NLOG_SYSINFO)
msyslog(LOG_NOTICE,
"runtime config from %s rejected due to nomodify restriction",
stoa(&rbufp->recv_srcadr));
sys_restricted++;
return;
}
data_count = remoteconfig_cmdlength(reqpt, reqend);
if (data_count > sizeof(remote_config.buffer) - 2) {
snprintf(remote_config.err_msg,
sizeof(remote_config.err_msg),
"runtime configuration failed: request too long");
ctl_putdata(remote_config.err_msg,
strlen(remote_config.err_msg), 0);
ctl_flushpkt(0);
msyslog(LOG_NOTICE,
"runtime config from %s rejected: request too long",
stoa(&rbufp->recv_srcadr));
return;
}
if (data_count != (size_t)(reqend - reqpt)) {
snprintf(remote_config.err_msg,
sizeof(remote_config.err_msg),
"runtime configuration failed: request contains an unprintable character");
ctl_putdata(remote_config.err_msg,
strlen(remote_config.err_msg), 0);
ctl_flushpkt(0);
msyslog(LOG_NOTICE,
"runtime config from %s rejected: request contains an unprintable character: %0x",
stoa(&rbufp->recv_srcadr),
reqpt[data_count]);
return;
}
memcpy(remote_config.buffer, reqpt, data_count);
remote_config.buffer[data_count] = '\0';
DPRINTF(1, ("Got Remote Configuration Command: %s\n",
remote_config.buffer));
msyslog(LOG_NOTICE, "%s config: %s",
stoa(&rbufp->recv_srcadr),
remote_config.buffer);
remote_config.buffer[data_count++] = '\n';
remote_config.buffer[data_count] = '\0';
remote_config.pos = 0;
remote_config.err_pos = 0;
remote_config.no_errors = 0;
config_remotely(&rbufp->recv_srcadr);
if (0 == remote_config.no_errors) {
retval = snprintf(remote_config.err_msg,
sizeof(remote_config.err_msg),
"Config Succeeded");
if (retval > 0)
remote_config.err_pos += retval;
}
ctl_putdata(remote_config.err_msg, remote_config.err_pos, 0);
ctl_flushpkt(0);
DPRINTF(1, ("Reply: %s\n", remote_config.err_msg));
if (remote_config.no_errors > 0)
msyslog(LOG_NOTICE, "%d error in %s config",
remote_config.no_errors,
stoa(&rbufp->recv_srcadr));
}
static u_int32 derive_nonce(
sockaddr_u * addr,
u_int32 ts_i,
u_int32 ts_f
)
{
static u_int32 salt[4];
static u_long last_salt_update;
union d_tag {
u_char digest[EVP_MAX_MD_SIZE];
u_int32 extract;
} d;
EVP_MD_CTX *ctx;
u_int len;
while (!salt[0] || current_time - last_salt_update >= 3600) {
salt[0] = ntp_random();
salt[1] = ntp_random();
salt[2] = ntp_random();
salt[3] = ntp_random();
last_salt_update = current_time;
}
ctx = EVP_MD_CTX_new();
EVP_DigestInit(ctx, EVP_get_digestbynid(NID_md5));
EVP_DigestUpdate(ctx, salt, sizeof(salt));
EVP_DigestUpdate(ctx, &ts_i, sizeof(ts_i));
EVP_DigestUpdate(ctx, &ts_f, sizeof(ts_f));
if (IS_IPV4(addr))
EVP_DigestUpdate(ctx, &SOCK_ADDR4(addr),
sizeof(SOCK_ADDR4(addr)));
else
EVP_DigestUpdate(ctx, &SOCK_ADDR6(addr),
sizeof(SOCK_ADDR6(addr)));
EVP_DigestUpdate(ctx, &NSRCPORT(addr), sizeof(NSRCPORT(addr)));
EVP_DigestUpdate(ctx, salt, sizeof(salt));
EVP_DigestFinal(ctx, d.digest, &len);
EVP_MD_CTX_free(ctx);
return d.extract;
}
static void generate_nonce(
struct recvbuf * rbufp,
char * nonce,
size_t nonce_octets
)
{
u_int32 derived;
derived = derive_nonce(&rbufp->recv_srcadr,
rbufp->recv_time.l_ui,
rbufp->recv_time.l_uf);
snprintf(nonce, nonce_octets, "%08x%08x%08x",
rbufp->recv_time.l_ui, rbufp->recv_time.l_uf, derived);
}
static int validate_nonce(
const char * pnonce,
struct recvbuf * rbufp
)
{
u_int ts_i;
u_int ts_f;
l_fp ts;
l_fp now_delta;
u_int supposed;
u_int derived;
if (3 != sscanf(pnonce, "%08x%08x%08x", &ts_i, &ts_f, &supposed))
return FALSE;
ts.l_ui = (u_int32)ts_i;
ts.l_uf = (u_int32)ts_f;
derived = derive_nonce(&rbufp->recv_srcadr, ts.l_ui, ts.l_uf);
get_systime(&now_delta);
L_SUB(&now_delta, &ts);
return (supposed == derived && now_delta.l_ui < 16);
}
static void
send_random_tag_value(
int indx
)
{
int noise;
char buf[32];
noise = rand() ^ (rand() << 16);
buf[0] = 'a' + noise % 26;
noise >>= 5;
buf[1] = 'a' + noise % 26;
noise >>= 5;
buf[2] = 'a' + noise % 26;
noise >>= 5;
buf[3] = '.';
snprintf(&buf[4], sizeof(buf) - 4, "%d", indx);
ctl_putuint(buf, noise);
}
static void
send_mru_entry(
mon_entry * mon,
int count
)
{
const char first_fmt[] = "first.%d";
const char ct_fmt[] = "ct.%d";
const char mv_fmt[] = "mv.%d";
const char rs_fmt[] = "rs.%d";
char tag[32];
u_char sent[6];
u_int32 noise;
u_int which;
u_int remaining;
const char * pch;
remaining = COUNTOF(sent);
ZERO(sent);
noise = (u_int32)(rand() ^ (rand() << 16));
while (remaining > 0) {
which = (noise & 7) % COUNTOF(sent);
noise >>= 3;
while (sent[which])
which = (which + 1) % COUNTOF(sent);
switch (which) {
case 0:
snprintf(tag, sizeof(tag), addr_fmt, count);
pch = sptoa(&mon->rmtadr);
ctl_putunqstr(tag, pch, strlen(pch));
break;
case 1:
snprintf(tag, sizeof(tag), last_fmt, count);
ctl_putts(tag, &mon->last);
break;
case 2:
snprintf(tag, sizeof(tag), first_fmt, count);
ctl_putts(tag, &mon->first);
break;
case 3:
snprintf(tag, sizeof(tag), ct_fmt, count);
ctl_putint(tag, mon->count);
break;
case 4:
snprintf(tag, sizeof(tag), mv_fmt, count);
ctl_putuint(tag, mon->vn_mode);
break;
case 5:
snprintf(tag, sizeof(tag), rs_fmt, count);
ctl_puthex(tag, mon->flags);
break;
}
sent[which] = TRUE;
remaining--;
}
}
static void read_mru_list(
struct recvbuf *rbufp,
int restrict_mask
)
{
static const char nulltxt[1] = { '\0' };
static const char nonce_text[] = "nonce";
static const char frags_text[] = "frags";
static const char limit_text[] = "limit";
static const char mincount_text[] = "mincount";
static const char resall_text[] = "resall";
static const char resany_text[] = "resany";
static const char maxlstint_text[] = "maxlstint";
static const char laddr_text[] = "laddr";
static const char resaxx_fmt[] = "0x%hx";
u_int limit;
u_short frags;
u_short resall;
u_short resany;
int mincount;
u_int maxlstint;
sockaddr_u laddr;
struct interface * lcladr;
u_int count;
u_int ui;
u_int uf;
l_fp last[16];
sockaddr_u addr[COUNTOF(last)];
char buf[128];
struct ctl_var * in_parms;
const struct ctl_var * v;
const char * val;
const char * pch;
char * pnonce;
int nonce_valid;
size_t i;
int priors;
u_short hash;
mon_entry * mon;
mon_entry * prior_mon;
l_fp now;
if (RES_NOMRULIST & restrict_mask) {
ctl_error(CERR_PERMISSION);
NLOG(NLOG_SYSINFO)
msyslog(LOG_NOTICE,
"mrulist from %s rejected due to nomrulist restriction",
stoa(&rbufp->recv_srcadr));
sys_restricted++;
return;
}
in_parms = NULL;
set_var(&in_parms, nonce_text, sizeof(nonce_text), 0);
set_var(&in_parms, frags_text, sizeof(frags_text), 0);
set_var(&in_parms, limit_text, sizeof(limit_text), 0);
set_var(&in_parms, mincount_text, sizeof(mincount_text), 0);
set_var(&in_parms, resall_text, sizeof(resall_text), 0);
set_var(&in_parms, resany_text, sizeof(resany_text), 0);
set_var(&in_parms, maxlstint_text, sizeof(maxlstint_text), 0);
set_var(&in_parms, laddr_text, sizeof(laddr_text), 0);
for (i = 0; i < COUNTOF(last); i++) {
snprintf(buf, sizeof(buf), last_fmt, (int)i);
set_var(&in_parms, buf, strlen(buf) + 1, 0);
snprintf(buf, sizeof(buf), addr_fmt, (int)i);
set_var(&in_parms, buf, strlen(buf) + 1, 0);
}
pnonce = NULL;
frags = 0;
limit = 0;
mincount = 0;
resall = 0;
resany = 0;
maxlstint = 0;
lcladr = NULL;
priors = 0;
ZERO(last);
ZERO(addr);
while (NULL != (v = ctl_getitem(in_parms, (void*)&val)) &&
!(EOV & v->flags)) {
int si;
if (NULL == val)
val = nulltxt;
if (!strcmp(nonce_text, v->text)) {
free(pnonce);
pnonce = (*val) ? estrdup(val) : NULL;
} else if (!strcmp(frags_text, v->text)) {
if (1 != sscanf(val, "%hu", &frags))
goto blooper;
} else if (!strcmp(limit_text, v->text)) {
if (1 != sscanf(val, "%u", &limit))
goto blooper;
} else if (!strcmp(mincount_text, v->text)) {
if (1 != sscanf(val, "%d", &mincount))
goto blooper;
if (mincount < 0)
mincount = 0;
} else if (!strcmp(resall_text, v->text)) {
if (1 != sscanf(val, resaxx_fmt, &resall))
goto blooper;
} else if (!strcmp(resany_text, v->text)) {
if (1 != sscanf(val, resaxx_fmt, &resany))
goto blooper;
} else if (!strcmp(maxlstint_text, v->text)) {
if (1 != sscanf(val, "%u", &maxlstint))
goto blooper;
} else if (!strcmp(laddr_text, v->text)) {
if (!decodenetnum(val, &laddr))
goto blooper;
lcladr = getinterface(&laddr, 0);
} else if (1 == sscanf(v->text, last_fmt, &si) &&
(size_t)si < COUNTOF(last)) {
if (2 != sscanf(val, "0x%08x.%08x", &ui, &uf))
goto blooper;
last[si].l_ui = ui;
last[si].l_uf = uf;
if (!SOCK_UNSPEC(&addr[si]) && si == priors)
priors++;
} else if (1 == sscanf(v->text, addr_fmt, &si) &&
(size_t)si < COUNTOF(addr)) {
if (!decodenetnum(val, &addr[si]))
goto blooper;
if (last[si].l_ui && last[si].l_uf && si == priors)
priors++;
} else {
DPRINTF(1, ("read_mru_list: invalid key item: '%s' (ignored)\n",
v->text));
continue;
blooper:
DPRINTF(1, ("read_mru_list: invalid param for '%s': '%s' (bailing)\n",
v->text, val));
free(pnonce);
pnonce = NULL;
break;
}
}
free_varlist(in_parms);
in_parms = NULL;
if (NULL == pnonce)
return;
nonce_valid = validate_nonce(pnonce, rbufp);
free(pnonce);
if (!nonce_valid)
return;
if ((0 == frags && !(0 < limit && limit <= MRU_ROW_LIMIT)) ||
frags > MRU_FRAGS_LIMIT) {
ctl_error(CERR_BADVALUE);
return;
}
if (0 != frags && 0 == limit)
limit = UINT_MAX;
else if (0 != limit && 0 == frags)
frags = MRU_FRAGS_LIMIT;
mon = NULL;
for (i = 0; i < (size_t)priors; i++) {
hash = MON_HASH(&addr[i]);
for (mon = mon_hash[hash];
mon != NULL;
mon = mon->hash_next)
if (ADDR_PORT_EQ(&mon->rmtadr, &addr[i]))
break;
if (mon != NULL) {
if (L_ISEQU(&mon->last, &last[i]))
break;
mon = NULL;
}
}
if (priors) {
if (NULL == mon) {
ctl_error(CERR_UNKNOWNVAR);
return;
}
ctl_putts("last.older", &mon->last);
pch = sptoa(&mon->rmtadr);
ctl_putunqstr("addr.older", pch, strlen(pch));
if (limit > 1)
mon = PREV_DLIST(mon_mru_list, mon, mru);
} else {
mon = TAIL_DLIST(mon_mru_list, mru);
}
get_systime(&now);
generate_nonce(rbufp, buf, sizeof(buf));
ctl_putunqstr("nonce", buf, strlen(buf));
prior_mon = NULL;
for (count = 0;
mon != NULL && res_frags < frags && count < limit;
mon = PREV_DLIST(mon_mru_list, mon, mru)) {
if (mon->count < mincount)
continue;
if (resall && resall != (resall & mon->flags))
continue;
if (resany && !(resany & mon->flags))
continue;
if (maxlstint > 0 && now.l_ui - mon->last.l_ui >
maxlstint)
continue;
if (lcladr != NULL && mon->lcladr != lcladr)
continue;
send_mru_entry(mon, count);
if (!count)
send_random_tag_value(0);
count++;
prior_mon = mon;
}
if (NULL == mon) {
if (count > 1)
send_random_tag_value(count - 1);
ctl_putts("now", &now);
if (prior_mon != NULL)
ctl_putts("last.newest", &prior_mon->last);
}
ctl_flushpkt(0);
}
static void
send_ifstats_entry(
endpt * la,
u_int ifnum
)
{
const char addr_fmtu[] = "addr.%u";
const char bcast_fmt[] = "bcast.%u";
const char en_fmt[] = "en.%u";
const char name_fmt[] = "name.%u";
const char flags_fmt[] = "flags.%u";
const char tl_fmt[] = "tl.%u";
const char mc_fmt[] = "mc.%u";
const char rx_fmt[] = "rx.%u";
const char tx_fmt[] = "tx.%u";
const char txerr_fmt[] = "txerr.%u";
const char pc_fmt[] = "pc.%u";
const char up_fmt[] = "up.%u";
char tag[32];
u_char sent[IFSTATS_FIELDS];
int noisebits;
u_int32 noise;
u_int which;
u_int remaining;
const char *pch;
remaining = COUNTOF(sent);
ZERO(sent);
noise = 0;
noisebits = 0;
while (remaining > 0) {
if (noisebits < 4) {
noise = rand() ^ (rand() << 16);
noisebits = 31;
}
which = (noise & 0xf) % COUNTOF(sent);
noise >>= 4;
noisebits -= 4;
while (sent[which])
which = (which + 1) % COUNTOF(sent);
switch (which) {
case 0:
snprintf(tag, sizeof(tag), addr_fmtu, ifnum);
pch = sptoa(&la->sin);
ctl_putunqstr(tag, pch, strlen(pch));
break;
case 1:
snprintf(tag, sizeof(tag), bcast_fmt, ifnum);
if (INT_BCASTOPEN & la->flags)
pch = sptoa(&la->bcast);
else
pch = "";
ctl_putunqstr(tag, pch, strlen(pch));
break;
case 2:
snprintf(tag, sizeof(tag), en_fmt, ifnum);
ctl_putint(tag, !la->ignore_packets);
break;
case 3:
snprintf(tag, sizeof(tag), name_fmt, ifnum);
ctl_putstr(tag, la->name, strlen(la->name));
break;
case 4:
snprintf(tag, sizeof(tag), flags_fmt, ifnum);
ctl_puthex(tag, (u_int)la->flags);
break;
case 5:
snprintf(tag, sizeof(tag), tl_fmt, ifnum);
ctl_putint(tag, la->last_ttl);
break;
case 6:
snprintf(tag, sizeof(tag), mc_fmt, ifnum);
ctl_putint(tag, la->num_mcast);
break;
case 7:
snprintf(tag, sizeof(tag), rx_fmt, ifnum);
ctl_putint(tag, la->received);
break;
case 8:
snprintf(tag, sizeof(tag), tx_fmt, ifnum);
ctl_putint(tag, la->sent);
break;
case 9:
snprintf(tag, sizeof(tag), txerr_fmt, ifnum);
ctl_putint(tag, la->notsent);
break;
case 10:
snprintf(tag, sizeof(tag), pc_fmt, ifnum);
ctl_putuint(tag, la->peercnt);
break;
case 11:
snprintf(tag, sizeof(tag), up_fmt, ifnum);
ctl_putuint(tag, current_time - la->starttime);
break;
}
sent[which] = TRUE;
remaining--;
}
send_random_tag_value((int)ifnum);
}
static void
read_ifstats(
struct recvbuf * rbufp
)
{
u_int ifidx;
endpt * la;
for (ifidx = 0; ifidx < sys_ifnum; ifidx++) {
for (la = ep_list; la != NULL; la = la->elink)
if (ifidx == la->ifnum)
break;
if (NULL == la)
continue;
send_ifstats_entry(la, ifidx);
}
ctl_flushpkt(0);
}
static void
sockaddrs_from_restrict_u(
sockaddr_u * psaA,
sockaddr_u * psaM,
restrict_u * pres,
int ipv6
)
{
ZERO(*psaA);
ZERO(*psaM);
if (!ipv6) {
psaA->sa.sa_family = AF_INET;
psaA->sa4.sin_addr.s_addr = htonl(pres->u.v4.addr);
psaM->sa.sa_family = AF_INET;
psaM->sa4.sin_addr.s_addr = htonl(pres->u.v4.mask);
} else {
psaA->sa.sa_family = AF_INET6;
memcpy(&psaA->sa6.sin6_addr, &pres->u.v6.addr,
sizeof(psaA->sa6.sin6_addr));
psaM->sa.sa_family = AF_INET6;
memcpy(&psaM->sa6.sin6_addr, &pres->u.v6.mask,
sizeof(psaA->sa6.sin6_addr));
}
}
static void
send_restrict_entry(
restrict_u * pres,
int ipv6,
u_int idx
)
{
const char addr_fmtu[] = "addr.%u";
const char mask_fmtu[] = "mask.%u";
const char hits_fmt[] = "hits.%u";
const char flags_fmt[] = "flags.%u";
char tag[32];
u_char sent[RESLIST_FIELDS];
int noisebits;
u_int32 noise;
u_int which;
u_int remaining;
sockaddr_u addr;
sockaddr_u mask;
const char * pch;
char * buf;
const char * match_str;
const char * access_str;
sockaddrs_from_restrict_u(&addr, &mask, pres, ipv6);
remaining = COUNTOF(sent);
ZERO(sent);
noise = 0;
noisebits = 0;
while (remaining > 0) {
if (noisebits < 2) {
noise = rand() ^ (rand() << 16);
noisebits = 31;
}
which = (noise & 0x3) % COUNTOF(sent);
noise >>= 2;
noisebits -= 2;
while (sent[which])
which = (which + 1) % COUNTOF(sent);
switch (which) {
case 0:
snprintf(tag, sizeof(tag), addr_fmtu, idx);
pch = stoa(&addr);
ctl_putunqstr(tag, pch, strlen(pch));
break;
case 1:
snprintf(tag, sizeof(tag), mask_fmtu, idx);
pch = stoa(&mask);
ctl_putunqstr(tag, pch, strlen(pch));
break;
case 2:
snprintf(tag, sizeof(tag), hits_fmt, idx);
ctl_putuint(tag, pres->count);
break;
case 3:
snprintf(tag, sizeof(tag), flags_fmt, idx);
match_str = res_match_flags(pres->mflags);
access_str = res_access_flags(pres->flags);
if ('\0' == match_str[0]) {
pch = access_str;
} else {
LIB_GETBUF(buf);
snprintf(buf, LIB_BUFLENGTH, "%s %s",
match_str, access_str);
pch = buf;
}
ctl_putunqstr(tag, pch, strlen(pch));
break;
}
sent[which] = TRUE;
remaining--;
}
send_random_tag_value((int)idx);
}
static void
send_restrict_list(
restrict_u * pres,
int ipv6,
u_int * pidx
)
{
for ( ; pres != NULL; pres = pres->link) {
send_restrict_entry(pres, ipv6, *pidx);
(*pidx)++;
}
}
static void
read_addr_restrictions(
struct recvbuf * rbufp
)
{
u_int idx;
idx = 0;
send_restrict_list(restrictlist4, FALSE, &idx);
send_restrict_list(restrictlist6, TRUE, &idx);
ctl_flushpkt(0);
}
static void
read_ordlist(
struct recvbuf * rbufp,
int restrict_mask
)
{
const char ifstats_s[] = "ifstats";
const size_t ifstats_chars = COUNTOF(ifstats_s) - 1;
const char addr_rst_s[] = "addr_restrictions";
const size_t a_r_chars = COUNTOF(addr_rst_s) - 1;
struct ntp_control * cpkt;
u_short qdata_octets;
cpkt = (struct ntp_control *)&rbufp->recv_pkt;
qdata_octets = ntohs(cpkt->count);
if (0 == qdata_octets || (ifstats_chars == qdata_octets &&
!memcmp(ifstats_s, cpkt->u.data, ifstats_chars))) {
read_ifstats(rbufp);
return;
}
if (a_r_chars == qdata_octets &&
!memcmp(addr_rst_s, cpkt->u.data, a_r_chars)) {
read_addr_restrictions(rbufp);
return;
}
ctl_error(CERR_UNKNOWNVAR);
}
static void req_nonce(
struct recvbuf * rbufp,
int restrict_mask
)
{
char buf[64];
generate_nonce(rbufp, buf, sizeof(buf));
ctl_putunqstr("nonce", buf, strlen(buf));
ctl_flushpkt(0);
}
static void
read_clockstatus(
struct recvbuf *rbufp,
int restrict_mask
)
{
#ifndef REFCLOCK
ctl_error(CERR_BADASSOC);
#else
const struct ctl_var * v;
int i;
struct peer * peer;
char * valuep;
u_char * wants;
size_t wants_alloc;
int gotvar;
const u_char * cc;
struct ctl_var * kv;
struct refclockstat cs;
if (res_associd != 0) {
peer = findpeerbyassoc(res_associd);
} else {
if (sys_peer != NULL && (FLAG_REFCLOCK &
sys_peer->flags))
peer = sys_peer;
else
for (peer = peer_list;
peer != NULL;
peer = peer->p_link)
if (FLAG_REFCLOCK & peer->flags)
break;
}
if (NULL == peer || !(FLAG_REFCLOCK & peer->flags)) {
ctl_error(CERR_BADASSOC);
return;
}
cs.kv_list = NULL;
refclock_control(&peer->srcadr, NULL, &cs);
kv = cs.kv_list;
rpkt.status = htons(ctlclkstatus(&cs));
wants_alloc = CC_MAXCODE + 1 + count_var(kv);
wants = emalloc_zero(wants_alloc);
gotvar = FALSE;
while (NULL != (v = ctl_getitem(clock_var, &valuep))) {
if (!(EOV & v->flags)) {
wants[v->code] = TRUE;
gotvar = TRUE;
} else {
v = ctl_getitem(kv, &valuep);
if (NULL == v) {
ctl_error(CERR_BADVALUE);
free(wants);
free_varlist(cs.kv_list);
return;
}
if (EOV & v->flags) {
ctl_error(CERR_UNKNOWNVAR);
free(wants);
free_varlist(cs.kv_list);
return;
}
wants[CC_MAXCODE + 1 + v->code] = TRUE;
gotvar = TRUE;
}
}
if (gotvar) {
for (i = 1; i <= CC_MAXCODE; i++)
if (wants[i])
ctl_putclock(i, &cs, TRUE);
if (kv != NULL)
for (i = 0; !(EOV & kv[i].flags); i++)
if (wants[i + CC_MAXCODE + 1])
ctl_putdata(kv[i].text,
strlen(kv[i].text),
FALSE);
} else {
for (cc = def_clock_var; *cc != 0; cc++)
ctl_putclock((int)*cc, &cs, FALSE);
for ( ; kv != NULL && !(EOV & kv->flags); kv++)
if (DEF & kv->flags)
ctl_putdata(kv->text, strlen(kv->text),
FALSE);
}
free(wants);
free_varlist(cs.kv_list);
ctl_flushpkt(0);
#endif
}
static void
write_clockstatus(
struct recvbuf *rbufp,
int restrict_mask
)
{
ctl_error(CERR_PERMISSION);
}
static void
set_trap(
struct recvbuf *rbufp,
int restrict_mask
)
{
int traptype;
if (restrict_mask & RES_NOTRAP) {
ctl_error(CERR_PERMISSION);
return;
}
traptype = TRAP_TYPE_PRIO;
if (restrict_mask & RES_LPTRAP)
traptype = TRAP_TYPE_NONPRIO;
if (!ctlsettrap(&rbufp->recv_srcadr, rbufp->dstadr, traptype,
(int)res_version))
ctl_error(CERR_NORESOURCE);
ctl_flushpkt(0);
}
static void
unset_trap(
struct recvbuf *rbufp,
int restrict_mask
)
{
int traptype;
traptype = TRAP_TYPE_PRIO;
if (restrict_mask & RES_LPTRAP)
traptype = TRAP_TYPE_NONPRIO;
if (!ctlclrtrap(&rbufp->recv_srcadr, rbufp->dstadr, traptype))
ctl_error(CERR_BADASSOC);
ctl_flushpkt(0);
}
int
ctlsettrap(
sockaddr_u *raddr,
struct interface *linter,
int traptype,
int version
)
{
size_t n;
struct ctl_trap *tp;
struct ctl_trap *tptouse;
if ((tp = ctlfindtrap(raddr, linter)) != NULL) {
switch (traptype) {
case TRAP_TYPE_CONFIG:
tp->tr_flags = TRAP_INUSE|TRAP_CONFIGURED;
break;
case TRAP_TYPE_PRIO:
if (tp->tr_flags & TRAP_CONFIGURED)
return (1);
tp->tr_flags = TRAP_INUSE;
break;
case TRAP_TYPE_NONPRIO:
if (tp->tr_flags & TRAP_CONFIGURED)
return (1);
tp->tr_flags = TRAP_INUSE|TRAP_NONPRIO;
break;
}
tp->tr_settime = current_time;
tp->tr_resets++;
return (1);
}
tptouse = NULL;
for (n = 0; n < COUNTOF(ctl_traps); n++) {
tp = &ctl_traps[n];
if ((TRAP_INUSE & tp->tr_flags) &&
!(TRAP_CONFIGURED & tp->tr_flags) &&
((tp->tr_settime + CTL_TRAPTIME) > current_time)) {
tp->tr_flags = 0;
num_ctl_traps--;
}
if (!(TRAP_INUSE & tp->tr_flags)) {
tptouse = tp;
} else if (!(TRAP_CONFIGURED & tp->tr_flags)) {
switch (traptype) {
case TRAP_TYPE_CONFIG:
if (tptouse == NULL) {
tptouse = tp;
break;
}
if ((TRAP_NONPRIO & tptouse->tr_flags) &&
!(TRAP_NONPRIO & tp->tr_flags))
break;
if (!(TRAP_NONPRIO & tptouse->tr_flags)
&& (TRAP_NONPRIO & tp->tr_flags)) {
tptouse = tp;
break;
}
if (tptouse->tr_origtime <
tp->tr_origtime)
tptouse = tp;
break;
case TRAP_TYPE_PRIO:
if ( TRAP_NONPRIO & tp->tr_flags) {
if (tptouse == NULL ||
((TRAP_INUSE &
tptouse->tr_flags) &&
tptouse->tr_origtime <
tp->tr_origtime))
tptouse = tp;
}
break;
case TRAP_TYPE_NONPRIO:
break;
}
}
}
if (tptouse == NULL)
return (0);
tptouse->tr_settime = tptouse->tr_origtime = current_time;
tptouse->tr_count = tptouse->tr_resets = 0;
tptouse->tr_sequence = 1;
tptouse->tr_addr = *raddr;
tptouse->tr_localaddr = linter;
tptouse->tr_version = (u_char) version;
tptouse->tr_flags = TRAP_INUSE;
if (traptype == TRAP_TYPE_CONFIG)
tptouse->tr_flags |= TRAP_CONFIGURED;
else if (traptype == TRAP_TYPE_NONPRIO)
tptouse->tr_flags |= TRAP_NONPRIO;
num_ctl_traps++;
return (1);
}
int
ctlclrtrap(
sockaddr_u *raddr,
struct interface *linter,
int traptype
)
{
register struct ctl_trap *tp;
if ((tp = ctlfindtrap(raddr, linter)) == NULL)
return (0);
if (tp->tr_flags & TRAP_CONFIGURED
&& traptype != TRAP_TYPE_CONFIG)
return (0);
tp->tr_flags = 0;
num_ctl_traps--;
return (1);
}
static struct ctl_trap *
ctlfindtrap(
sockaddr_u *raddr,
struct interface *linter
)
{
size_t n;
for (n = 0; n < COUNTOF(ctl_traps); n++)
if ((ctl_traps[n].tr_flags & TRAP_INUSE)
&& ADDR_PORT_EQ(raddr, &ctl_traps[n].tr_addr)
&& (linter == ctl_traps[n].tr_localaddr))
return &ctl_traps[n];
return NULL;
}
void
report_event(
int err,
struct peer *peer,
const char *str
)
{
char statstr[NTP_MAXSTRLEN];
int i;
size_t len;
if (peer == NULL) {
if (ctl_sys_last_event != (u_char)err)
ctl_sys_num_events= 0;
if (ctl_sys_num_events >= CTL_SYS_MAXEVENTS)
return;
ctl_sys_last_event = (u_char)err;
ctl_sys_num_events++;
snprintf(statstr, sizeof(statstr),
"0.0.0.0 %04x %02x %s",
ctlsysstatus(), err, eventstr(err));
if (str != NULL) {
len = strlen(statstr);
snprintf(statstr + len, sizeof(statstr) - len,
" %s", str);
}
NLOG(NLOG_SYSEVENT)
msyslog(LOG_INFO, "%s", statstr);
} else {
const char * src;
u_char errlast;
errlast = (u_char)err & ~PEER_EVENT;
if (peer->last_event != errlast)
peer->num_events = 0;
if (peer->num_events >= CTL_PEER_MAXEVENTS)
return;
peer->last_event = errlast;
peer->num_events++;
if (ISREFCLOCKADR(&peer->srcadr))
src = refnumtoa(&peer->srcadr);
else
src = stoa(&peer->srcadr);
snprintf(statstr, sizeof(statstr),
"%s %04x %02x %s", src,
ctlpeerstatus(peer), err, eventstr(err));
if (str != NULL) {
len = strlen(statstr);
snprintf(statstr + len, sizeof(statstr) - len,
" %s", str);
}
NLOG(NLOG_PEEREVENT)
msyslog(LOG_INFO, "%s", statstr);
}
record_proto_stats(statstr);
#if DEBUG
if (debug)
printf("event at %lu %s\n", current_time, statstr);
#endif
if (num_ctl_traps <= 0)
return;
if ((err & PEER_EVENT) && !peer)
return;
res_opcode = CTL_OP_ASYNCMSG;
res_offset = 0;
res_async = TRUE;
res_authenticate = FALSE;
datapt = rpkt.u.data;
dataend = &rpkt.u.data[CTL_MAX_DATA_LEN];
if (!(err & PEER_EVENT)) {
rpkt.associd = 0;
rpkt.status = htons(ctlsysstatus());
for (i = 1; i <= CS_VARLIST; i++)
ctl_putsys(i);
} else if (NULL != peer) {
rpkt.associd = htons(peer->associd);
rpkt.status = htons(ctlpeerstatus(peer));
for (i = 1; i <= CP_MAX_NOAUTOKEY; i++)
ctl_putpeer(i, peer);
# ifdef REFCLOCK
if (err == PEVNT_CLOCK) {
struct refclockstat cs;
struct ctl_var *kv;
cs.kv_list = NULL;
refclock_control(&peer->srcadr, NULL, &cs);
ctl_puthex("refclockstatus",
ctlclkstatus(&cs));
for (i = 1; i <= CC_MAXCODE; i++)
ctl_putclock(i, &cs, FALSE);
for (kv = cs.kv_list;
kv != NULL && !(EOV & kv->flags);
kv++)
if (DEF & kv->flags)
ctl_putdata(kv->text,
strlen(kv->text),
FALSE);
free_varlist(cs.kv_list);
}
# endif
}
ctl_flushpkt(0);
}
int
mprintf_event(
int evcode,
struct peer * p,
const char * fmt,
...
)
{
va_list ap;
int rc;
char msg[512];
va_start(ap, fmt);
rc = mvsnprintf(msg, sizeof(msg), fmt, ap);
va_end(ap);
report_event(evcode, p, msg);
return rc;
}
void
ctl_clr_stats(void)
{
ctltimereset = current_time;
numctlreq = 0;
numctlbadpkts = 0;
numctlresponses = 0;
numctlfrags = 0;
numctlerrors = 0;
numctlfrags = 0;
numctltooshort = 0;
numctlinputresp = 0;
numctlinputfrag = 0;
numctlinputerr = 0;
numctlbadoffset = 0;
numctlbadversion = 0;
numctldatatooshort = 0;
numctlbadop = 0;
numasyncmsgs = 0;
}
static u_short
count_var(
const struct ctl_var *k
)
{
u_int c;
if (NULL == k)
return 0;
c = 0;
while (!(EOV & (k++)->flags))
c++;
ENSURE(c <= USHRT_MAX);
return (u_short)c;
}
char *
add_var(
struct ctl_var **kv,
u_long size,
u_short def
)
{
u_short c;
struct ctl_var *k;
char * buf;
c = count_var(*kv);
*kv = erealloc(*kv, (c + 2) * sizeof(**kv));
k = *kv;
buf = emalloc(size);
k[c].code = c;
k[c].text = buf;
k[c].flags = def;
k[c + 1].code = 0;
k[c + 1].text = NULL;
k[c + 1].flags = EOV;
return buf;
}
void
set_var(
struct ctl_var **kv,
const char *data,
u_long size,
u_short def
)
{
struct ctl_var *k;
const char *s;
const char *t;
char *td;
if (NULL == data || !size)
return;
k = *kv;
if (k != NULL) {
while (!(EOV & k->flags)) {
if (NULL == k->text) {
td = emalloc(size);
memcpy(td, data, size);
k->text = td;
k->flags = def;
return;
} else {
s = data;
t = k->text;
while (*t != '=' && *s == *t) {
s++;
t++;
}
if (*s == *t && ((*t == '=') || !*t)) {
td = erealloc((void *)(intptr_t)k->text, size);
memcpy(td, data, size);
k->text = td;
k->flags = def;
return;
}
}
k++;
}
}
td = add_var(kv, size, def);
memcpy(td, data, size);
}
void
set_sys_var(
const char *data,
u_long size,
u_short def
)
{
set_var(&ext_sys_var, data, size, def);
}
const char *
get_ext_sys_var(const char *tag)
{
struct ctl_var * v;
size_t c;
const char * val;
val = NULL;
c = strlen(tag);
for (v = ext_sys_var; !(EOV & v->flags); v++) {
if (NULL != v->text && !memcmp(tag, v->text, c)) {
if ('=' == v->text[c]) {
val = v->text + c + 1;
break;
} else if ('\0' == v->text[c]) {
val = "";
break;
}
}
}
return val;
}
void
free_varlist(
struct ctl_var *kv
)
{
struct ctl_var *k;
if (kv) {
for (k = kv; !(k->flags & EOV); k++)
free((void *)(intptr_t)k->text);
free((void *)kv);
}
}