case "`basename $ac_cv_prog_CC`" in
acc*) ;;
+ gcc*) ;;
*) cat >> confdefs.h <<\EOF
#define DECL_STDIO_0 1
EOF
esac
echo $ac_n "checking if we should use a streams device for ifconfig""... $ac_c" 1>&6
-echo "configure:6653: checking if we should use a streams device for ifconfig" >&5
+echo "configure:6654: checking if we should use a streams device for ifconfig" >&5
if eval "test \"\${ac_cv_var_use_streams_device_for_ifconfig+set}\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
echo "$ac_t""$ac_cv_var_use_streams_device_for_ifconfig" 1>&6
echo $ac_n "checking if we need extra room for SO_RCVBUF""... $ac_c" 1>&6
-echo "configure:6663: checking if we need extra room for SO_RCVBUF" >&5
+echo "configure:6664: checking if we need extra room for SO_RCVBUF" >&5
if eval "test \"\${ac_cv_var_rcvbuf_slop+set}\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
esac
echo $ac_n "checking if we will open the broadcast socket""... $ac_c" 1>&6
-echo "configure:6685: checking if we will open the broadcast socket" >&5
+echo "configure:6686: checking if we will open the broadcast socket" >&5
if eval "test \"\${ac_cv_var_open_bcast_socket+set}\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
esac
echo $ac_n "checking if we want the HPUX version of FindConfig()""... $ac_c" 1>&6
-echo "configure:6710: checking if we want the HPUX version of FindConfig()" >&5
+echo "configure:6711: checking if we want the HPUX version of FindConfig()" >&5
if eval "test \"\${ac_cv_var_hpux_findconfig+set}\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
esac
echo $ac_n "checking if process groups are set with -pid""... $ac_c" 1>&6
-echo "configure:6732: checking if process groups are set with -pid" >&5
+echo "configure:6733: checking if process groups are set with -pid" >&5
if eval "test \"\${ac_cv_arg_setpgrp_negpid+set}\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
esac
echo $ac_n "checking if we need a ctty for F_SETOWN""... $ac_c" 1>&6
-echo "configure:6768: checking if we need a ctty for F_SETOWN" >&5
+echo "configure:6769: checking if we need a ctty for F_SETOWN" >&5
if eval "test \"\${ac_cv_func_ctty_for_f_setown+set}\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
ntp_warning='GRONK'
echo $ac_n "checking if we'll use clock_settime or settimeofday or stime""... $ac_c" 1>&6
-echo "configure:6798: checking if we'll use clock_settime or settimeofday or stime" >&5
+echo "configure:6799: checking if we'll use clock_settime or settimeofday or stime" >&5
case "$ac_cv_func_clock_settime$ac_cv_func_settimeofday$ac_cv_func_stime" in
yes*)
ntp_warning=''
esac
echo $ac_n "checking if we have a losing syscall()""... $ac_c" 1>&6
-echo "configure:6827: checking if we have a losing syscall()" >&5
+echo "configure:6828: checking if we have a losing syscall()" >&5
if eval "test \"\${ac_cv_var_syscall_bug+set}\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
esac
echo $ac_n "checking for Streams/TLI""... $ac_c" 1>&6
-echo "configure:6850: checking for Streams/TLI" >&5
+echo "configure:6851: checking for Streams/TLI" >&5
if eval "test \"\${ac_cv_var_streams_tli+set}\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
esac
echo $ac_n "checking for SIGIO""... $ac_c" 1>&6
-echo "configure:6879: checking for SIGIO" >&5
+echo "configure:6880: checking for SIGIO" >&5
if eval "test \"\${ac_cv_hdr_def_sigio+set}\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
cat > conftest.$ac_ext <<EOF
-#line 6884 "configure"
+#line 6885 "configure"
#include "confdefs.h"
#include <signal.h>
#ifdef SIGIO
echo "$ac_t""$ac_cv_hdr_def_sigio" 1>&6
echo $ac_n "checking if we want to use signalled IO""... $ac_c" 1>&6
-echo "configure:6907: checking if we want to use signalled IO" >&5
+echo "configure:6908: checking if we want to use signalled IO" >&5
if eval "test \"\${ac_cv_var_signalled_io+set}\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
esac
echo $ac_n "checking for SIGPOLL""... $ac_c" 1>&6
-echo "configure:6958: checking for SIGPOLL" >&5
+echo "configure:6959: checking for SIGPOLL" >&5
if eval "test \"\${ac_cv_hdr_def_sigpoll+set}\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
cat > conftest.$ac_ext <<EOF
-#line 6963 "configure"
+#line 6964 "configure"
#include "confdefs.h"
#include <signal.h>
#ifdef SIGPOLL
echo "$ac_t""$ac_cv_hdr_def_sigpoll" 1>&6
echo $ac_n "checking for SIGSYS""... $ac_c" 1>&6
-echo "configure:6986: checking for SIGSYS" >&5
+echo "configure:6987: checking for SIGSYS" >&5
if eval "test \"\${ac_cv_hdr_def_sigsys+set}\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
cat > conftest.$ac_ext <<EOF
-#line 6991 "configure"
+#line 6992 "configure"
#include "confdefs.h"
#include <signal.h>
#ifdef SIGSYS
echo "$ac_t""$ac_cv_hdr_def_sigsys" 1>&6
echo $ac_n "checking if we can use SIGPOLL for UDP I/O""... $ac_c" 1>&6
-echo "configure:7014: checking if we can use SIGPOLL for UDP I/O" >&5
+echo "configure:7015: checking if we can use SIGPOLL for UDP I/O" >&5
if eval "test \"\${ac_cv_var_use_udp_sigpoll+set}\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
esac
echo $ac_n "checking if we can use SIGPOLL for TTY I/O""... $ac_c" 1>&6
-echo "configure:7069: checking if we can use SIGPOLL for TTY I/O" >&5
+echo "configure:7070: checking if we can use SIGPOLL for TTY I/O" >&5
if eval "test \"\${ac_cv_var_use_tty_sigpoll+set}\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
esac
echo $ac_n "checking if nlist() values might require extra indirection""... $ac_c" 1>&6
-echo "configure:7124: checking if nlist() values might require extra indirection" >&5
+echo "configure:7125: checking if nlist() values might require extra indirection" >&5
if eval "test \"\${ac_cv_var_nlist_extra_indirection+set}\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
esac
echo $ac_n "checking for a minimum recommended value of tickadj""... $ac_c" 1>&6
-echo "configure:7146: checking for a minimum recommended value of tickadj" >&5
+echo "configure:7147: checking for a minimum recommended value of tickadj" >&5
if eval "test \"\${ac_cv_var_min_rec_tickadj+set}\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
esac
echo $ac_n "checking if the TTY code permits PARENB and IGNPAR""... $ac_c" 1>&6
-echo "configure:7169: checking if the TTY code permits PARENB and IGNPAR" >&5
+echo "configure:7170: checking if the TTY code permits PARENB and IGNPAR" >&5
if eval "test \"\${ac_cv_var_no_parenb_ignpar+set}\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
esac
echo $ac_n "checking if we're including debugging code""... $ac_c" 1>&6
-echo "configure:7194: checking if we're including debugging code" >&5
+echo "configure:7195: checking if we're including debugging code" >&5
# Check whether --enable-debugging or --disable-debugging was given.
if test "${enable_debugging+set}" = set; then
enableval="$enable_debugging"
echo "$ac_t""$ntp_ok" 1>&6
echo $ac_n "checking for a the number of minutes in a DST adjustment""... $ac_c" 1>&6
-echo "configure:7212: checking for a the number of minutes in a DST adjustment" >&5
+echo "configure:7213: checking for a the number of minutes in a DST adjustment" >&5
# Check whether --enable-dst_minutes or --disable-dst_minutes was given.
if test "${enable_dst_minutes+set}" = set; then
enableval="$enable_dst_minutes"
echo "$ac_t""$ans" 1>&6
echo $ac_n "checking if we have the tty_clk line discipline/streams module""... $ac_c" 1>&6
-echo "configure:7228: checking if we have the tty_clk line discipline/streams module" >&5
+echo "configure:7229: checking if we have the tty_clk line discipline/streams module" >&5
if eval "test \"\${ac_cv_var_tty_clk+set}\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
esac
echo $ac_n "checking for the ppsclock streams module""... $ac_c" 1>&6
-echo "configure:7244: checking for the ppsclock streams module" >&5
+echo "configure:7245: checking for the ppsclock streams module" >&5
if eval "test \"\${ac_cv_var_ppsclock+set}\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
esac
echo $ac_n "checking for kernel multicast support""... $ac_c" 1>&6
-echo "configure:7260: checking for kernel multicast support" >&5
+echo "configure:7261: checking for kernel multicast support" >&5
if eval "test \"\${ac_cv_var_mcast+set}\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
case "$target" in
i386-sequent-sysv4) ;;
*) cat > conftest.$ac_ext <<EOF
-#line 7268 "configure"
+#line 7269 "configure"
#include "confdefs.h"
#include <netinet/in.h>
#ifdef IP_ADD_MEMBERSHIP
esac
echo $ac_n "checking availability of ntp_{adj,get}time()""... $ac_c" 1>&6
-echo "configure:7295: checking availability of ntp_{adj,get}time()" >&5
+echo "configure:7296: checking availability of ntp_{adj,get}time()" >&5
if eval "test \"\${ac_cv_var_ntp_syscalls+set}\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
ac_cv_var_ntp_syscalls=libc
;;
*) cat > conftest.$ac_ext <<EOF
-#line 7309 "configure"
+#line 7310 "configure"
#include "confdefs.h"
#include <sys/syscall.h>
#if defined(SYS_ntp_gettime) && defined(SYS_ntp_adjtime)
esac
echo $ac_n "checking if sys/timex.h has STA_FLL""... $ac_c" 1>&6
-echo "configure:7349: checking if sys/timex.h has STA_FLL" >&5
+echo "configure:7350: checking if sys/timex.h has STA_FLL" >&5
if eval "test \"\${ac_cv_var_sta_fll+set}\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
cat > conftest.$ac_ext <<EOF
-#line 7354 "configure"
+#line 7355 "configure"
#include "confdefs.h"
#include <sys/timex.h>
#ifdef STA_FLL
echo "$ac_t""$ac_cv_var_sta_fll" 1>&6
echo $ac_n "checking if we have kernel PLL support""... $ac_c" 1>&6
-echo "configure:7377: checking if we have kernel PLL support" >&5
+echo "configure:7378: checking if we have kernel PLL support" >&5
if eval "test \"\${ac_cv_var_kernel_pll+set}\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
esac
echo $ac_n "checking if SIOCGIFCONF returns buffer size in the buffer""... $ac_c" 1>&6
-echo "configure:7401: checking if SIOCGIFCONF returns buffer size in the buffer" >&5
+echo "configure:7402: checking if SIOCGIFCONF returns buffer size in the buffer" >&5
if eval "test \"\${ac_cv_var_size_returned_in_buffer+set}\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
echo $ac_n "checking if we want to use MD5 authentication""... $ac_c" 1>&6
-echo "configure:7430: checking if we want to use MD5 authentication" >&5
+echo "configure:7431: checking if we want to use MD5 authentication" >&5
if eval "test \"\${ac_cv_var_use_md5+set}\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
# Check for ioctls TIOCGPPSEV
echo $ac_n "checking ioctl TIOCGPPSEV""... $ac_c" 1>&6
-echo "configure:7455: checking ioctl TIOCGPPSEV" >&5
+echo "configure:7456: checking ioctl TIOCGPPSEV" >&5
if test "$ac_cv_header_termios_h" = "yes"; then
cat > conftest.$ac_ext <<EOF
-#line 7458 "configure"
+#line 7459 "configure"
#include "confdefs.h"
#include <termios.h>
#ifdef TIOCGPPSEV
# Check for ioctls TIOCSPPS
echo $ac_n "checking ioctl TIOCSPPS""... $ac_c" 1>&6
-echo "configure:7491: checking ioctl TIOCSPPS" >&5
+echo "configure:7492: checking ioctl TIOCSPPS" >&5
if test "$ac_cv_header_termios_h" = "yes"; then
cat > conftest.$ac_ext <<EOF
-#line 7494 "configure"
+#line 7495 "configure"
#include "confdefs.h"
#include <termios.h>
#ifdef TIOCSPPS
# Check for ioctls CIOGETEV
echo $ac_n "checking ioctl CIOGETEV""... $ac_c" 1>&6
-echo "configure:7526: checking ioctl CIOGETEV" >&5
+echo "configure:7527: checking ioctl CIOGETEV" >&5
if test "$ac_cv_header_sys_ppsclock_h" = "yes"; then
cat > conftest.$ac_ext <<EOF
-#line 7529 "configure"
+#line 7530 "configure"
#include "confdefs.h"
#include <sys/ppsclock.h>
#ifdef CIOGETEV
# Check for ioctls TIOCGSERIAL, TIOCSSERIAL, ASYNC_PPS_CD_POS, ASYNC_PPS_CD_NEG
ac_safe=`echo "linux/serial.h" | sed 'y%./+-%__p_%'`
echo $ac_n "checking for linux/serial.h""... $ac_c" 1>&6
-echo "configure:7586: checking for linux/serial.h" >&5
+echo "configure:7587: checking for linux/serial.h" >&5
if eval "test \"\${ac_cv_header_$ac_safe+set}\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
cat > conftest.$ac_ext <<EOF
-#line 7591 "configure"
+#line 7592 "configure"
#include "confdefs.h"
#include <linux/serial.h>
EOF
ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:7596: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:7597: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
if test -z "$ac_err"; then
rm -rf conftest*
fi
echo $ac_n "checking ioctl TIOCGSERIAL""... $ac_c" 1>&6
-echo "configure:7618: checking ioctl TIOCGSERIAL" >&5
+echo "configure:7619: checking ioctl TIOCGSERIAL" >&5
case "$ac_cv_header_sys_ppsclock_h$ac_cv_header_linux_serial_h" in
yesyes)
cat > conftest.$ac_ext <<EOF
-#line 7622 "configure"
+#line 7623 "configure"
#include "confdefs.h"
#include <sys/time.h>
typedef int u_int;
# HPUX only, and by explicit request
echo $ac_n "checking Datum/Bancomm bc635/VME interface""... $ac_c" 1>&6
-echo "configure:7669: checking Datum/Bancomm bc635/VME interface" >&5
+echo "configure:7670: checking Datum/Bancomm bc635/VME interface" >&5
# Check whether --enable-BANCOMM or --disable-BANCOMM was given.
if test "${enable_BANCOMM+set}" = set; then
enableval="$enable_BANCOMM"
#HPUX only, and only by explicit request
echo $ac_n "checking TrueTime GPS receiver/VME interface""... $ac_c" 1>&6
-echo "configure:7693: checking TrueTime GPS receiver/VME interface" >&5
+echo "configure:7694: checking TrueTime GPS receiver/VME interface" >&5
# Check whether --enable-GPSVME or --disable-GPSVME was given.
if test "${enable_GPSVME+set}" = set; then
enableval="$enable_GPSVME"
esac
echo $ac_n "checking for PCL720 clock support""... $ac_c" 1>&6
-echo "configure:7716: checking for PCL720 clock support" >&5
+echo "configure:7717: checking for PCL720 clock support" >&5
case "$ac_cv_header_machine_inline_h$ac_cv_header_sys_pcl720_h$ac_cv_header_sys_i8253_h" in
yesyesyes)
cat >> confdefs.h <<\EOF
echo "$ac_t""$ans" 1>&6
echo $ac_n "checking for SHM clock attached thru shared memory""... $ac_c" 1>&6
-echo "configure:7732: checking for SHM clock attached thru shared memory" >&5
+echo "configure:7733: checking for SHM clock attached thru shared memory" >&5
# Check whether --enable-SHM or --disable-SHM was given.
if test "${enable_SHM+set}" = set; then
enableval="$enable_SHM"
echo "$ac_t""$ntp_ok" 1>&6
echo $ac_n "checking for ONCORE Motorola VP/UT Oncore GPS""... $ac_c" 1>&6
-echo "configure:7751: checking for ONCORE Motorola VP/UT Oncore GPS" >&5
+echo "configure:7752: checking for ONCORE Motorola VP/UT Oncore GPS" >&5
# Check whether --enable-ONCORE or --disable-ONCORE was given.
if test "${enable_ONCORE+set}" = set; then
enableval="$enable_ONCORE"
echo "$ac_t""$ntp_ok" 1>&6
echo $ac_n "checking for default inclusion of all suitable non-PARSE clocks""... $ac_c" 1>&6
-echo "configure:7773: checking for default inclusion of all suitable non-PARSE clocks" >&5
+echo "configure:7774: checking for default inclusion of all suitable non-PARSE clocks" >&5
# Check whether --enable-all-clocks or --disable-all-clocks was given.
if test "${enable_all_clocks+set}" = set; then
enableval="$enable_all_clocks"
echo "$ac_t""$ntp_eac" 1>&6
echo $ac_n "checking if we have support for PARSE clocks""... $ac_c" 1>&6
-echo "configure:7785: checking if we have support for PARSE clocks" >&5
+echo "configure:7786: checking if we have support for PARSE clocks" >&5
case "$ac_cv_header_termio_h$ac_cv_header_termios_h" in
*yes*)
ntp_canparse=yes
# Requires modem control
echo $ac_n "checking ACTS modem service""... $ac_c" 1>&6
-echo "configure:7797: checking ACTS modem service" >&5
+echo "configure:7798: checking ACTS modem service" >&5
# Check whether --enable-ACTS or --disable-ACTS was given.
if test "${enable_ACTS+set}" = set; then
enableval="$enable_ACTS"
ntp_ok=$enableval
else
cat > conftest.$ac_ext <<EOF
-#line 7804 "configure"
+#line 7805 "configure"
#include "confdefs.h"
#include <termios.h>
#ifdef HAVE_SYS_IOCTL_H
echo "$ac_t""$ntp_ok" 1>&6
echo $ac_n "checking Arbiter 1088A/B GPS receiver""... $ac_c" 1>&6
-echo "configure:7837: checking Arbiter 1088A/B GPS receiver" >&5
+echo "configure:7838: checking Arbiter 1088A/B GPS receiver" >&5
# Check whether --enable-ARBITER or --disable-ARBITER was given.
if test "${enable_ARBITER+set}" = set; then
enableval="$enable_ARBITER"
echo "$ac_t""$ntp_ok" 1>&6
echo $ac_n "checking Arcron MSF receiver""... $ac_c" 1>&6
-echo "configure:7856: checking Arcron MSF receiver" >&5
+echo "configure:7857: checking Arcron MSF receiver" >&5
# Check whether --enable-ARCRON_MSF or --disable-ARCRON_MSF was given.
if test "${enable_ARCRON_MSF+set}" = set; then
enableval="$enable_ARCRON_MSF"
echo "$ac_t""$ntp_ok" 1>&6
echo $ac_n "checking Austron 2200A/2201A GPS receiver""... $ac_c" 1>&6
-echo "configure:7875: checking Austron 2200A/2201A GPS receiver" >&5
+echo "configure:7876: checking Austron 2200A/2201A GPS receiver" >&5
# Check whether --enable-AS2201 or --disable-AS2201 was given.
if test "${enable_AS2201+set}" = set; then
enableval="$enable_AS2201"
echo "$ac_t""$ntp_ok" 1>&6
echo $ac_n "checking PPS interface""... $ac_c" 1>&6
-echo "configure:7894: checking PPS interface" >&5
+echo "configure:7895: checking PPS interface" >&5
# Check whether --enable-ATOM or --disable-ATOM was given.
if test "${enable_ATOM+set}" = set; then
enableval="$enable_ATOM"
echo "$ac_t""$ntp_ok" 1>&6
echo $ac_n "checking CHU modem/decoder""... $ac_c" 1>&6
-echo "configure:7913: checking CHU modem/decoder" >&5
+echo "configure:7914: checking CHU modem/decoder" >&5
# Check whether --enable-CHU or --disable-CHU was given.
if test "${enable_CHU+set}" = set; then
enableval="$enable_CHU"
ac_refclock_chu=$ntp_ok
echo $ac_n "checking CHU audio/decoder""... $ac_c" 1>&6
-echo "configure:7933: checking CHU audio/decoder" >&5
+echo "configure:7934: checking CHU audio/decoder" >&5
# Check whether --enable-AUDIO-CHU or --disable-AUDIO-CHU was given.
if test "${enable_AUDIO_CHU+set}" = set; then
enableval="$enable_AUDIO_CHU"
# Not under HP-UX
echo $ac_n "checking Datum Programmable Time System""... $ac_c" 1>&6
-echo "configure:7957: checking Datum Programmable Time System" >&5
+echo "configure:7958: checking Datum Programmable Time System" >&5
# Check whether --enable-DATUM or --disable-DATUM was given.
if test "${enable_DATUM+set}" = set; then
enableval="$enable_DATUM"
# Requires modem control
echo $ac_n "checking Heath GC-1000 WWV/WWVH receiver""... $ac_c" 1>&6
-echo "configure:7983: checking Heath GC-1000 WWV/WWVH receiver" >&5
+echo "configure:7984: checking Heath GC-1000 WWV/WWVH receiver" >&5
# Check whether --enable-HEATH or --disable-HEATH was given.
if test "${enable_HEATH+set}" = set; then
enableval="$enable_HEATH"
ntp_ok=$enableval
else
cat > conftest.$ac_ext <<EOF
-#line 7990 "configure"
+#line 7991 "configure"
#include "confdefs.h"
#include <termios.h>
#ifdef HAVE_SYS_IOCTL_H
echo "$ac_t""$ntp_ok" 1>&6
echo $ac_n "checking HP 58503A GPS receiver""... $ac_c" 1>&6
-echo "configure:8023: checking HP 58503A GPS receiver" >&5
+echo "configure:8024: checking HP 58503A GPS receiver" >&5
# Check whether --enable-HPGPS or --disable-HPGPS was given.
if test "${enable_HPGPS+set}" = set; then
enableval="$enable_HPGPS"
echo "$ac_t""$ntp_ok" 1>&6
echo $ac_n "checking Sun IRIG audio decoder""... $ac_c" 1>&6
-echo "configure:8042: checking Sun IRIG audio decoder" >&5
+echo "configure:8043: checking Sun IRIG audio decoder" >&5
# Check whether --enable-IRIG or --disable-IRIG was given.
if test "${enable_IRIG+set}" = set; then
enableval="$enable_IRIG"
esac
echo $ac_n "checking Leitch CSD 5300 Master Clock System Driver""... $ac_c" 1>&6
-echo "configure:8070: checking Leitch CSD 5300 Master Clock System Driver" >&5
+echo "configure:8071: checking Leitch CSD 5300 Master Clock System Driver" >&5
# Check whether --enable-LEITCH or --disable-LEITCH was given.
if test "${enable_LEITCH+set}" = set; then
enableval="$enable_LEITCH"
echo "$ac_t""$ntp_ok" 1>&6
echo $ac_n "checking local clock reference""... $ac_c" 1>&6
-echo "configure:8089: checking local clock reference" >&5
+echo "configure:8090: checking local clock reference" >&5
# Check whether --enable-LOCAL-CLOCK or --disable-LOCAL-CLOCK was given.
if test "${enable_LOCAL_CLOCK+set}" = set; then
enableval="$enable_LOCAL_CLOCK"
echo "$ac_t""$ntp_ok" 1>&6
echo $ac_n "checking EES M201 MSF receiver""... $ac_c" 1>&6
-echo "configure:8108: checking EES M201 MSF receiver" >&5
+echo "configure:8109: checking EES M201 MSF receiver" >&5
# Check whether --enable-MSFEES or --disable-MSFEES was given.
if test "${enable_MSFEES+set}" = set; then
enableval="$enable_MSFEES"
# Not Ultrix
echo $ac_n "checking Magnavox MX4200 GPS receiver""... $ac_c" 1>&6
-echo "configure:8128: checking Magnavox MX4200 GPS receiver" >&5
+echo "configure:8129: checking Magnavox MX4200 GPS receiver" >&5
# Check whether --enable-MX4200 or --disable-MX4200 was given.
if test "${enable_MX4200+set}" = set; then
enableval="$enable_MX4200"
esac
echo $ac_n "checking NMEA GPS receiver""... $ac_c" 1>&6
-echo "configure:8155: checking NMEA GPS receiver" >&5
+echo "configure:8156: checking NMEA GPS receiver" >&5
# Check whether --enable-NMEA or --disable-NMEA was given.
if test "${enable_NMEA+set}" = set; then
enableval="$enable_NMEA"
echo "$ac_t""$ntp_ok" 1>&6
echo $ac_n "checking for Palisade clock""... $ac_c" 1>&6
-echo "configure:8174: checking for Palisade clock" >&5
+echo "configure:8175: checking for Palisade clock" >&5
# Check whether --enable-PALISADE or --disable-PALISADE was given.
if test "${enable_PALISADE+set}" = set; then
enableval="$enable_PALISADE"
echo "$ac_t""$ntp_ok" 1>&6
echo $ac_n "checking PST/Traconex 1020 WWV/WWVH receiver""... $ac_c" 1>&6
-echo "configure:8200: checking PST/Traconex 1020 WWV/WWVH receiver" >&5
+echo "configure:8201: checking PST/Traconex 1020 WWV/WWVH receiver" >&5
# Check whether --enable-PST or --disable-PST was given.
if test "${enable_PST+set}" = set; then
enableval="$enable_PST"
# Not Ultrix
echo $ac_n "checking Rockwell Jupiter GPS receiver""... $ac_c" 1>&6
-echo "configure:8220: checking Rockwell Jupiter GPS receiver" >&5
+echo "configure:8221: checking Rockwell Jupiter GPS receiver" >&5
# Check whether --enable-JUPITER or --disable-JUPITER was given.
if test "${enable_JUPITER+set}" = set; then
enableval="$enable_JUPITER"
# Requires modem control
echo $ac_n "checking PTB modem service""... $ac_c" 1>&6
-echo "configure:8248: checking PTB modem service" >&5
+echo "configure:8249: checking PTB modem service" >&5
# Check whether --enable-PTBACTS or --disable-PTBACTS was given.
if test "${enable_PTBACTS+set}" = set; then
enableval="$enable_PTBACTS"
ntp_ok=$enableval
else
cat > conftest.$ac_ext <<EOF
-#line 8255 "configure"
+#line 8256 "configure"
#include "confdefs.h"
#include <termios.h>
#ifdef HAVE_SYS_IOCTL_H
echo "$ac_t""$ntp_ok" 1>&6
echo $ac_n "checking KSI/Odetics TPRO/S GPS receiver/IRIG interface""... $ac_c" 1>&6
-echo "configure:8288: checking KSI/Odetics TPRO/S GPS receiver/IRIG interface" >&5
+echo "configure:8289: checking KSI/Odetics TPRO/S GPS receiver/IRIG interface" >&5
# Check whether --enable-TPRO or --disable-TPRO was given.
if test "${enable_TPRO+set}" = set; then
enableval="$enable_TPRO"
esac
echo $ac_n "checking TRAK 8810 GPS receiver""... $ac_c" 1>&6
-echo "configure:8316: checking TRAK 8810 GPS receiver" >&5
+echo "configure:8317: checking TRAK 8810 GPS receiver" >&5
# Check whether --enable-TRAK or --disable-TRAK was given.
if test "${enable_TRAK+set}" = set; then
enableval="$enable_TRAK"
echo "$ac_t""$ntp_ok" 1>&6
echo $ac_n "checking Chrono-log K-series WWVB receiver""... $ac_c" 1>&6
-echo "configure:8335: checking Chrono-log K-series WWVB receiver" >&5
+echo "configure:8336: checking Chrono-log K-series WWVB receiver" >&5
# Check whether --enable-CHRONOLOG or --disable-CHRONOLOG was given.
if test "${enable_CHRONOLOG+set}" = set; then
enableval="$enable_CHRONOLOG"
echo "$ac_t""$ntp_ok" 1>&6
echo $ac_n "checking Dumb generic hh:mm:ss local clock""... $ac_c" 1>&6
-echo "configure:8354: checking Dumb generic hh:mm:ss local clock" >&5
+echo "configure:8355: checking Dumb generic hh:mm:ss local clock" >&5
# Check whether --enable-DUMBCLOCK or --disable-DUMBCLOCK was given.
if test "${enable_DUMBCLOCK+set}" = set; then
enableval="$enable_DUMBCLOCK"
# Not on a vax-dec-bsd
echo $ac_n "checking Kinemetrics/TrueTime receivers""... $ac_c" 1>&6
-echo "configure:8374: checking Kinemetrics/TrueTime receivers" >&5
+echo "configure:8375: checking Kinemetrics/TrueTime receivers" >&5
# Check whether --enable-TRUETIME or --disable-TRUETIME was given.
if test "${enable_TRUETIME+set}" = set; then
enableval="$enable_TRUETIME"
esac
echo $ac_n "checking Spectracom 8170/Netclock/2 WWVB receiver""... $ac_c" 1>&6
-echo "configure:8403: checking Spectracom 8170/Netclock/2 WWVB receiver" >&5
+echo "configure:8404: checking Spectracom 8170/Netclock/2 WWVB receiver" >&5
# Check whether --enable-WWVB or --disable-WWVB was given.
if test "${enable_WWVB+set}" = set; then
enableval="$enable_WWVB"
# Requires modem control
echo $ac_n "checking USNO modem service""... $ac_c" 1>&6
-echo "configure:8423: checking USNO modem service" >&5
+echo "configure:8424: checking USNO modem service" >&5
# Check whether --enable-USNO or --disable-USNO was given.
if test "${enable_USNO+set}" = set; then
enableval="$enable_USNO"
ntp_ok=$enableval
else
cat > conftest.$ac_ext <<EOF
-#line 8430 "configure"
+#line 8431 "configure"
#include "confdefs.h"
#include <termios.h>
#ifdef HAVE_SYS_IOCTL_H
echo "$ac_t""$ntp_ok" 1>&6
echo $ac_n "checking for default inclusion of all suitable PARSE clocks""... $ac_c" 1>&6
-echo "configure:8463: checking for default inclusion of all suitable PARSE clocks" >&5
+echo "configure:8464: checking for default inclusion of all suitable PARSE clocks" >&5
# Check whether --enable-parse-clocks or --disable-parse-clocks was given.
if test "${enable_parse_clocks+set}" = set; then
enableval="$enable_parse_clocks"
ntp_rawdcf=no
echo $ac_n "checking Diem Computime Radio Clock""... $ac_c" 1>&6
-echo "configure:8493: checking Diem Computime Radio Clock" >&5
+echo "configure:8494: checking Diem Computime Radio Clock" >&5
# Check whether --enable-COMPUTIME or --disable-COMPUTIME was given.
if test "${enable_COMPUTIME+set}" = set; then
enableval="$enable_COMPUTIME"
esac
echo $ac_n "checking ELV/DCF7000 clock""... $ac_c" 1>&6
-echo "configure:8518: checking ELV/DCF7000 clock" >&5
+echo "configure:8519: checking ELV/DCF7000 clock" >&5
# Check whether --enable-DCF7000 or --disable-DCF7000 was given.
if test "${enable_DCF7000+set}" = set; then
enableval="$enable_DCF7000"
esac
echo $ac_n "checking HOPF 6021 clock""... $ac_c" 1>&6
-echo "configure:8543: checking HOPF 6021 clock" >&5
+echo "configure:8544: checking HOPF 6021 clock" >&5
# Check whether --enable-HOPF6021 or --disable-HOPF6021 was given.
if test "${enable_HOPF6021+set}" = set; then
enableval="$enable_HOPF6021"
esac
echo $ac_n "checking Meinberg clocks""... $ac_c" 1>&6
-echo "configure:8568: checking Meinberg clocks" >&5
+echo "configure:8569: checking Meinberg clocks" >&5
# Check whether --enable-MEINBERG or --disable-MEINBERG was given.
if test "${enable_MEINBERG+set}" = set; then
enableval="$enable_MEINBERG"
esac
echo $ac_n "checking DCF77 raw time code""... $ac_c" 1>&6
-echo "configure:8593: checking DCF77 raw time code" >&5
+echo "configure:8594: checking DCF77 raw time code" >&5
# Check whether --enable-RAWDCF or --disable-RAWDCF was given.
if test "${enable_RAWDCF+set}" = set; then
enableval="$enable_RAWDCF"
case "$ntp_rawdcf" in
yes)
echo $ac_n "checking if we must enable parity for RAWDCF""... $ac_c" 1>&6
-echo "configure:8622: checking if we must enable parity for RAWDCF" >&5
+echo "configure:8623: checking if we must enable parity for RAWDCF" >&5
if eval "test \"\${ac_cv_var_rawdcf_parity+set}\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
esac
echo $ac_n "checking RCC 8000 clock""... $ac_c" 1>&6
-echo "configure:8650: checking RCC 8000 clock" >&5
+echo "configure:8651: checking RCC 8000 clock" >&5
# Check whether --enable-RCC8000 or --disable-RCC8000 was given.
if test "${enable_RCC8000+set}" = set; then
enableval="$enable_RCC8000"
esac
echo $ac_n "checking Schmid DCF77 clock""... $ac_c" 1>&6
-echo "configure:8675: checking Schmid DCF77 clock" >&5
+echo "configure:8676: checking Schmid DCF77 clock" >&5
# Check whether --enable-SCHMID or --disable-SCHMID was given.
if test "${enable_SCHMID+set}" = set; then
enableval="$enable_SCHMID"
esac
echo $ac_n "checking Trimble GPS receiver/TAIP protocol""... $ac_c" 1>&6
-echo "configure:8700: checking Trimble GPS receiver/TAIP protocol" >&5
+echo "configure:8701: checking Trimble GPS receiver/TAIP protocol" >&5
# Check whether --enable-TRIMTAIP or --disable-TRIMTAIP was given.
if test "${enable_TRIMTAIP+set}" = set; then
enableval="$enable_TRIMTAIP"
esac
echo $ac_n "checking Trimble GPS receiver/TSIP protocol""... $ac_c" 1>&6
-echo "configure:8725: checking Trimble GPS receiver/TSIP protocol" >&5
+echo "configure:8726: checking Trimble GPS receiver/TSIP protocol" >&5
# Check whether --enable-TRIMTSIP or --disable-TRIMTSIP was given.
if test "${enable_TRIMTSIP+set}" = set; then
enableval="$enable_TRIMTSIP"
esac
echo $ac_n "checking WHARTON 400A Series clock""... $ac_c" 1>&6
-echo "configure:8750: checking WHARTON 400A Series clock" >&5
+echo "configure:8751: checking WHARTON 400A Series clock" >&5
# Check whether --enable-WHARTON or --disable-WHARTON was given.
if test "${enable_WHARTON+set}" = set; then
enableval="$enable_WHARTON"
esac
echo $ac_n "checking VARITEXT clock""... $ac_c" 1>&6
-echo "configure:8775: checking VARITEXT clock" >&5
+echo "configure:8776: checking VARITEXT clock" >&5
# Check whether --enable-VARITEXT or --disable-VARITEXT was given.
if test "${enable_VARITEXT+set}" = set; then
enableval="$enable_VARITEXT"
echo $ac_n "checking if we need to make and use the parse libraries""... $ac_c" 1>&6
-echo "configure:8803: checking if we need to make and use the parse libraries" >&5
+echo "configure:8804: checking if we need to make and use the parse libraries" >&5
ans=no
case "$ntp_libparse" in
yes)
echo $ac_n "checking if we need to make and use the RSAREF library""... $ac_c" 1>&6
-echo "configure:8831: checking if we need to make and use the RSAREF library" >&5
+echo "configure:8832: checking if we need to make and use the RSAREF library" >&5
ans=no
if test -f $srcdir/rsaref2/source/rsa.c
then
echo $ac_n "checking if we can make dcf parse utilities""... $ac_c" 1>&6
-echo "configure:8849: checking if we can make dcf parse utilities" >&5
+echo "configure:8850: checking if we can make dcf parse utilities" >&5
ans=no
if test "$ntp_parseutil" = "yes"; then
case "$target" in
echo $ac_n "checking if we can build kernel streams modules for parse""... $ac_c" 1>&6
-echo "configure:8864: checking if we can build kernel streams modules for parse" >&5
+echo "configure:8865: checking if we can build kernel streams modules for parse" >&5
ans=no
if test "$ntp_parseutil$ac_cv_header_sys_stropts_h" = "yesyes"; then
case "$target" in
echo "$ac_t""$ans" 1>&6
echo $ac_n "checking if we need basic refclock support""... $ac_c" 1>&6
-echo "configure:8889: checking if we need basic refclock support" >&5
+echo "configure:8890: checking if we need basic refclock support" >&5
if test "$ntp_refclock" = "yes"; then
cat >> confdefs.h <<\EOF
#define REFCLOCK 1
echo $ac_n "checking if we want HP-UX adjtimed support""... $ac_c" 1>&6
-echo "configure:8901: checking if we want HP-UX adjtimed support" >&5
+echo "configure:8902: checking if we want HP-UX adjtimed support" >&5
case "$target" in
*-*-hpux[56789]*)
ans=yes
echo "$ac_t""$ans" 1>&6
echo $ac_n "checking if we can read kmem""... $ac_c" 1>&6
-echo "configure:8919: checking if we can read kmem" >&5
+echo "configure:8920: checking if we can read kmem" >&5
if eval "test \"\${ac_cv_var_can_kmem+set}\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
esac
echo $ac_n "checking if adjtime is accurate""... $ac_c" 1>&6
-echo "configure:8972: checking if adjtime is accurate" >&5
+echo "configure:8973: checking if adjtime is accurate" >&5
if eval "test \"\${ac_cv_var_adjtime_is_accurate+set}\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
esac
echo $ac_n "checking the name of 'tick' in the kernel""... $ac_c" 1>&6
-echo "configure:9024: checking the name of 'tick' in the kernel" >&5
+echo "configure:9025: checking the name of 'tick' in the kernel" >&5
if eval "test \"\${ac_cv_var_nlist_tick+set}\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
esac
#
echo $ac_n "checking for the units of 'tick'""... $ac_c" 1>&6
-echo "configure:9068: checking for the units of 'tick'" >&5
+echo "configure:9069: checking for the units of 'tick'" >&5
if eval "test \"\${ac_cv_var_tick_nano+set}\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
esac
#
echo $ac_n "checking the name of 'tickadj' in the kernel""... $ac_c" 1>&6
-echo "configure:9092: checking the name of 'tickadj' in the kernel" >&5
+echo "configure:9093: checking the name of 'tickadj' in the kernel" >&5
if eval "test \"\${ac_cv_var_nlist_tickadj+set}\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
esac
#
echo $ac_n "checking for the units of 'tickadj'""... $ac_c" 1>&6
-echo "configure:9145: checking for the units of 'tickadj'" >&5
+echo "configure:9146: checking for the units of 'tickadj'" >&5
if eval "test \"\${ac_cv_var_tickadj_nano+set}\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
esac
#
echo $ac_n "checking half-heartedly for 'dosynctodr' in the kernel""... $ac_c" 1>&6
-echo "configure:9169: checking half-heartedly for 'dosynctodr' in the kernel" >&5
+echo "configure:9170: checking half-heartedly for 'dosynctodr' in the kernel" >&5
if eval "test \"\${ac_cv_var_nlist_dosynctodr+set}\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
esac
#
echo $ac_n "checking half-heartedly for 'noprintf' in the kernel""... $ac_c" 1>&6
-echo "configure:9222: checking half-heartedly for 'noprintf' in the kernel" >&5
+echo "configure:9223: checking half-heartedly for 'noprintf' in the kernel" >&5
if eval "test \"\${ac_cv_var_nlist_noprintf+set}\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
echo $ac_n "checking for a default value for 'tick'""... $ac_c" 1>&6
-echo "configure:9272: checking for a default value for 'tick'" >&5
+echo "configure:9273: checking for a default value for 'tick'" >&5
if eval "test \"\${ac_cv_var_tick+set}\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
esac
echo $ac_n "checking for a default value for 'tickadj'""... $ac_c" 1>&6
-echo "configure:9316: checking for a default value for 'tickadj'" >&5
+echo "configure:9317: checking for a default value for 'tickadj'" >&5
if eval "test \"\${ac_cv_var_tickadj+set}\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
echo $ac_n "checking if we want and can make the tickadj utility""... $ac_c" 1>&6
-echo "configure:9423: checking if we want and can make the tickadj utility" >&5
+echo "configure:9424: checking if we want and can make the tickadj utility" >&5
if eval "test \"\${ac_cv_make_tickadj+set}\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
echo $ac_n "checking if we want and can make the ntptime utility""... $ac_c" 1>&6
-echo "configure:9439: checking if we want and can make the ntptime utility" >&5
+echo "configure:9440: checking if we want and can make the ntptime utility" >&5
if eval "test \"\${ac_cv_make_ntptime+set}\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
esac
echo $ac_n "checking if we want UDP wildcard delivery""... $ac_c" 1>&6
-echo "configure:9468: checking if we want UDP wildcard delivery" >&5
+echo "configure:9469: checking if we want UDP wildcard delivery" >&5
if eval "test \"\${ac_cv_var_udp_wildcard_delivery+set}\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
esac
echo $ac_n "checking if we should always slew the time""... $ac_c" 1>&6
-echo "configure:9547: checking if we should always slew the time" >&5
+echo "configure:9548: checking if we should always slew the time" >&5
if eval "test \"\${ac_cv_var_slew_always+set}\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
esac
echo $ac_n "checking if we should step and slew the time""... $ac_c" 1>&6
-echo "configure:9587: checking if we should step and slew the time" >&5
+echo "configure:9588: checking if we should step and slew the time" >&5
if eval "test \"\${ac_cv_var_step_slew+set}\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
esac
echo $ac_n "checking if ntpdate should step the time""... $ac_c" 1>&6
-echo "configure:9630: checking if ntpdate should step the time" >&5
+echo "configure:9631: checking if ntpdate should step the time" >&5
if eval "test \"\${ac_cv_var_ntpdate_step+set}\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
esac
echo $ac_n "checking if we should sync TODR clock every hour""... $ac_c" 1>&6
-echo "configure:9661: checking if we should sync TODR clock every hour" >&5
+echo "configure:9662: checking if we should sync TODR clock every hour" >&5
if eval "test \"\${ac_cv_var_sync_todr+set}\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
esac
echo $ac_n "checking if we should avoid kernel FLL bug""... $ac_c" 1>&6
-echo "configure:9694: checking if we should avoid kernel FLL bug" >&5
+echo "configure:9695: checking if we should avoid kernel FLL bug" >&5
if eval "test \"\${ac_cv_var_kernel_fll_bug+set}\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
--- /dev/null
+/*
+ * ntptimeset - get/set the time via ntp
+ *
+ * GOAL:
+ * The goal of ntptime is to set the current time on system startup
+ * to the best possible time using the network very wisely. It is assumed
+ * that after a resonable time has been sett then ntp daemon will
+ * maintain it.
+ *
+ * PROBLEM DOMAIN:
+ * We have three sets of issues related to acheiving the goal. The first
+ * issue is using the network when normal traffic is happening or when
+ * the entire network world is recovering from a campus wide power failure
+ * and is restarting. The second issue is the class of machine whether it
+ * is a user's office workstation being handled by an uneducated user or
+ * a server computer being handled by a trained operations staff. The third
+ * issue is whether the ratio of people to computers and whether the
+ * environment is stable and viable or not.
+ *
+ * NETWORK USAGE:
+ * The first issue of using the network wisely is a question of whether
+ * the network load and time server load and state are normal. If things
+ * are normal ntptime can do what ntpdate does of sending out 4 packets
+ * quickly to each server (new transmit done with each ack). However
+ * if network or time load is high then this scheme will simply contribute
+ * to problems. Given we have minimal state, we simply weight lost packets
+ * significantly and make sure we throttle output as much as possible
+ * without performance lost for quick startups.
+ *
+ * TRAINING AND KNOWLEDGE:
+ * The second issue of uneducated user of a office workstation versus a
+ * trained operation staff of a server machine translates into simply an
+ * issue of untrained and trained users.
+ *
+ * The training issue implies that for the sake of the users involved in the
+ * handling of their office workstation, problems and options should be
+ * communicated simply and effectively and not in terse expert related
+ * descriptions without possible options to be taken. The operator's training
+ * and education enables them to deal with either type of communication and
+ * control.
+ *
+ * AUTOMATION AND MANUAL CONTROL:
+ * The last issue boils down to a design problem. If the design tends to go
+ * into a manual mode when the environment is non-viable then one person
+ * handling many computers all at the same time will be heavily impacted. On
+ * the other hand, if the design tends to be automatic and does not indicate
+ * a way for the user to take over control then the computer will be
+ * unavailable for the user until the proble is resolved by someone else or
+ * the user.
+ *
+ * NOTE: Please do not have this program print out every minute some line,
+ * of output. If this happens and the environment is in trouble then
+ * many pages of paper on many different machines will be filled up.
+ * Save some tress in your lifetime.
+ *
+ * CONCLUSION:
+ * The behavior of the program derived from these three issues should be
+ * that during normal situations it quickly sets the time and allow the
+ * system to startup.
+ *
+ * However during abnormal conditions as detected by unresponsive servers,
+ * out-of-sync or bad responses and other detections, it should print out
+ * a simple but clear message and continue in a mellow way to get the best
+ * possible time. It may never get the time and if so should also indicate
+ * this.
+ *
+ * Rudy Nedved
+ * 18-May-1993
+ *
+ ****************************************************************
+ *
+ * Much of the above is confusing or no longer relevant. For example,
+ * it is rare these days for a machine's console to be a printing terminal,
+ * so the comment about saving trees doesn't mean much. Nonetheless,
+ * the basic principles still stand:
+ *
+ * - Work automatically, without human control or intervention. To
+ * this end, we use the same configuration file as ntpd itself, so
+ * you don't have to specify servers or other information on the
+ * command line. We also recognize that sometimes we won't be able
+ * to contact any servers, and give up in that event instead of
+ * hanging forever.
+ *
+ * - Behave in a sane way, both internally and externally, even in the
+ * face of insane conditions. That means we back off quickly when
+ * we don't hear a response, to avoid network congestion. Like
+ * ntpd, we verify responses from several servers before accepting
+ * the new time data.
+ *
+ * However, we don't assume that the local clock is right, or even
+ * close, because it might not be at boot time, and we want to catch
+ * and correct that situation. This behaviour has saved us in several
+ * instances. On HP-UX 9.0x, there used to be a bug in adjtimed which
+ * would cause the time to be set to some wild value, making the machine
+ * essentially unusable (we use Kerberos authentication pervasively,
+ * and it requires workstations and servers to have a time within five
+ * minutes of the Kerberos server). We also have problems on PC's
+ * running both Linux and some Microsoft OS -- they tend to disagree
+ * on what the BIOS clock should say, and who should update it, and
+ * when. On those systems, we not only run ntptimeset at boot, we
+ * also reset the BIOS clock based on the result, so the correct
+ * time will be retained across reboots.
+ *
+ * For these reasons, and others, we have continued to use this tool
+ * rather than ntpdate. It is run automatically at boot time on every
+ * workstation and server in our facility.
+ *
+ * In the past, we called this program 'ntptime'. Unfortunately, the
+ * ntp v4 distribution also includes a program with that name. In
+ * order to avoid confusion, we have renamed our program 'ntptimeset',
+ * which more accurately describes what it does.
+ *
+ * Jeffrey T. Hutzelman (N3NHS) <jhutz+@cmu.edu>
+ * School of Computer Science - Research Computing Facility
+ * Carnegie Mellon University - Pittsburgh, PA
+ * 16-Aug-1999
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#ifdef HAVE_SYS_TYPES_H
+# include <sys/types.h>
+#endif
+#ifdef HAVE_UNISTD_H
+# include <unistd.h>
+#endif
+
+#include <stdio.h>
+#include <signal.h>
+#include <ctype.h>
+#include <errno.h>
+#ifndef SYS_WINNT
+# include <netdb.h>
+# include <sys/signal.h>
+# include <sys/ioctl.h>
+#endif /* SYS_WINNT */
+#include <sys/time.h>
+#ifdef HAVE_SYS_RESOURCE_H
+# include <sys/resource.h>
+#endif /* HAVE_SYS_RESOURCE_H */
+
+#ifdef SYS_VXWORKS
+# include "ioLib.h"
+# include "sockLib.h"
+# include "timers.h"
+#endif
+
+
+#if defined(SYS_HPUX)
+# include <utmp.h>
+#endif
+
+#include "ntp_fp.h"
+#include "ntp.h"
+#include "ntp_io.h"
+#include "iosignal.h"
+#include "ntp_unixtime.h"
+#include "ntpdate.h"
+#include "ntp_string.h"
+#include "ntp_syslog.h"
+#include "ntp_select.h"
+#include "ntp_stdlib.h"
+#include "recvbuff.h"
+
+#ifdef SYS_WINNT
+# define TARGET_RESOLUTION 1 /* Try for 1-millisecond accuracy
+ on Windows NT timers. */
+#pragma comment(lib, "winmm")
+#endif /* SYS_WINNT */
+
+/*
+ * Scheduling priority we run at
+ */
+#ifndef SYS_VXWORKS
+# define NTPDATE_PRIO (-12)
+#else
+# define NTPDATE_PRIO (100)
+#endif
+
+#if defined(HAVE_TIMER_SETTIME) || defined (HAVE_TIMER_CREATE)
+/* POSIX TIMERS - vxWorks doesn't have itimer - casey */
+static timer_t ntpdate_timerid;
+#endif
+
+/*
+ * Compatibility stuff for Version 2
+ */
+#define NTP_MAXSKW 0x28f /* 0.01 sec in fp format */
+#define NTP_MINDIST 0x51f /* 0.02 sec in fp format */
+#define NTP_INFIN 15 /* max stratum, infinity a la Bellman-Ford */
+#define NTP_MAXWGT (8*FP_SECOND) /* maximum select weight 8 seconds */
+#define NTP_MAXLIST 5 /* maximum select list size */
+#define PEER_SHIFT 8 /* 8 suitable for crystal time base */
+
+/*
+ * Debugging flag
+ */
+volatile int debug = 0;
+
+/*
+ * File descriptor masks etc. for call to select
+ */
+int fd;
+fd_set fdmask;
+
+/*
+ * Initializing flag. All async routines watch this and only do their
+ * thing when it is clear.
+ */
+int initializing = 1;
+
+/*
+ * Alarm flag. Set when an alarm occurs
+ */
+volatile int alarm_flag = 0;
+
+/*
+ * Set the time if valid time determined
+ */
+int set_time = 0;
+
+/*
+ * transmission rate control
+ */
+#define MINTRANSMITS (3) /* minimum total packets per server */
+#define MAXXMITCOUNT (2) /* maximum packets per time interrupt */
+
+/*
+ * time setting constraints
+ */
+#define DESIREDDISP (4*FP_SECOND) /* desired dispersion, (fp 4) */
+int max_period = DEFMAXPERIOD;
+int min_servers = DEFMINSERVERS;
+int min_valid = DEFMINVALID;
+
+/*
+ * counters related to time setting constraints
+ */
+int contacted = 0; /* # of servers we have sent to */
+int responding = 0; /* servers responding */
+int validcount = 0; /* servers with valid time */
+int valid_n_low = 0; /* valid time servers with low dispersion */
+
+/*
+ * Unpriviledged port flag.
+ */
+int unpriv_port = 0;
+
+/*
+ * Program name.
+ */
+char *progname;
+
+/*
+ * Systemwide parameters and flags
+ */
+struct server **sys_servers; /* the server list */
+int sys_numservers = 0; /* number of servers to poll */
+int sys_authenticate = 0; /* true when authenticating */
+u_int32 sys_authkey = 0; /* set to authentication key in use */
+u_long sys_authdelay = 0; /* authentication delay */
+
+/*
+ * The current internal time
+ */
+u_long current_time = 0;
+
+/*
+ * File of encryption keys
+ */
+
+#ifndef KEYFILE
+# ifndef SYS_WINNT
+#define KEYFILE "/etc/ntp.keys"
+# else
+#define KEYFILE "%windir%\\ntp.keys"
+# endif /* SYS_WINNT */
+#endif /* KEYFILE */
+
+#ifndef SYS_WINNT
+const char *key_file = KEYFILE;
+#else
+char key_file_storage[MAX_PATH+1], *key_file ;
+#endif /* SYS_WINNT */
+
+/*
+ * total packet counts
+ */
+u_long total_xmit = 0;
+u_long total_recv = 0;
+
+/*
+ * Miscellaneous flags
+ */
+int verbose = 0;
+#define HORRIBLEOK 3 /* how many packets to let out */
+int horrible = 0; /* how many packets we drop for testing */
+int secondhalf = 0; /* second half of timeout period */
+int printmsg = 0; /* print time response analysis */
+
+/*
+ * The half time and finish time in internal time
+ */
+u_long half_time = 0;
+u_long finish_time = 0;
+
+
+int ntptimesetmain P((int argc, char *argv[]));
+extern void loadservers P((char *cfgpath));
+static void analysis P((int final));
+static int have_enough P((void));
+static void transmit P((register struct server *server));
+static void receive P((struct recvbuf *rbufp));
+static void clock_filter P((register struct server *server, s_fp d, l_fp *c));
+static void clock_count P((void));
+static struct server *clock_select P((void));
+static void set_local_clock P((void));
+static struct server *findserver P((struct sockaddr_in *addr));
+static void timer P((void));
+#ifndef SYS_WINNT
+static RETSIGTYPE alarming P((int sig));
+#endif /* SYS_WINNT */
+static void init_alarm P((void));
+static void init_io P((void));
+static int sendpkt P((struct sockaddr_in *dest, struct pkt *pkt, int len));
+ void input_handler P((l_fp *xts));
+static void printserver P((register struct server *pp, FILE *fp));
+#if !defined(HAVE_VSPRINTF)
+int vsprintf P((char *str, const char *fmt, va_list ap));
+#endif
+
+
+#ifdef NO_MAIN_ALLOWED
+CALL(ntptimeset,"ntptimeset",ntptimesetmain);
+
+void clear_globals()
+{
+ /*
+ * Debugging flag
+ */
+ debug = 0;
+
+ ntp_optind = 0;
+
+ /*
+ * Initializing flag. All async routines watch this and only do their
+ * thing when it is clear.
+ */
+ initializing = 1;
+
+ /*
+ * Alarm flag. Set when an alarm occurs
+ */
+ alarm_flag = 0;
+
+ /*
+ * Unpriviledged port flag.
+ */
+ unpriv_port = 0;
+
+ /*
+ * Systemwide parameters and flags
+ */
+ sys_numservers = 0; /* number of servers to poll */
+ sys_authenticate = 0; /* true when authenticating */
+ sys_authkey = 0; /* set to authentication key in use */
+ sys_authdelay = 0; /* authentication delay */
+
+ /*
+ * The current internal time
+ */
+ current_time = 0;
+
+ verbose = 0;
+}
+#endif /* NO_MAIN_ALLOWED */
+
+/*
+ * Main program. Initialize us and loop waiting for I/O and/or
+ * timer expiries.
+ */
+#ifndef NO_MAIN_ALLOWED
+int
+main(
+ int argc,
+ char *argv[]
+ )
+{
+ return ntptimesetmain(argc, argv);
+}
+#endif /* NO_MAIN_ALLOWED */
+
+
+int
+ntptimesetmain(
+ int argc,
+ char *argv[]
+ )
+{
+ int was_alarmed;
+ struct recvbuf *rbuflist;
+ struct recvbuf *rbuf;
+ l_fp tmp;
+ int errflg;
+ int c;
+ extern char *ntp_optarg;
+ extern int ntp_optind;
+ int ltmp;
+ char *cfgpath;
+
+#ifdef SYS_WINNT
+ HANDLE process_handle;
+
+ wVersionRequested = MAKEWORD(1,1);
+ if (WSAStartup(wVersionRequested, &wsaData)) {
+ msyslog(LOG_ERR, "No useable winsock.dll: %m");
+ exit(1);
+ }
+#endif /* SYS_WINNT */
+
+#ifdef NO_MAIN_ALLOWED
+ clear_globals();
+#endif
+
+ errflg = 0;
+ cfgpath = 0;
+ progname = argv[0];
+ syslogit = 0;
+
+ /*
+ * Decode argument list
+ */
+ while ((c = ntp_getopt(argc, argv, "a:c:de:slt:uvHS:V:")) != EOF)
+ switch (c)
+ {
+ case 'a':
+ c = atoi(ntp_optarg);
+ sys_authenticate = 1;
+ sys_authkey = c;
+ break;
+ case 'c':
+ cfgpath = ntp_optarg;
+ break;
+ case 'd':
+ ++debug;
+ break;
+ case 'e':
+ if (!atolfp(ntp_optarg, &tmp)
+ || tmp.l_ui != 0) {
+ (void) fprintf(stderr,
+ "%s: encryption delay %s is unlikely\n",
+ progname, ntp_optarg);
+ errflg++;
+ } else {
+ sys_authdelay = tmp.l_uf;
+ }
+ break;
+ case 's':
+ set_time = 1;
+ break;
+ case 'l':
+ syslogit = 1;
+ break;
+ case 't':
+ ltmp = atoi(ntp_optarg);
+ if (ltmp <= 0) {
+ (void) fprintf(stderr,
+ "%s: maximum time period (%d) is invalid\n",
+ progname, ltmp);
+ errflg++;
+ }
+ else
+ max_period = ltmp;
+ break;
+ case 'u':
+ unpriv_port = 1;
+ break;
+ case 'v':
+ ++verbose;
+ break;
+ case 'H':
+ horrible++;
+ break;
+ case 'S':
+ ltmp = atoi(ntp_optarg);
+ if (ltmp <= 0) {
+ (void) fprintf(stderr,
+ "%s: minimum responding (%d) is invalid\n",
+ progname, ltmp);
+ errflg++;
+ }
+ else
+ min_servers = ltmp;
+ break;
+ case 'V':
+ ltmp = atoi(ntp_optarg);
+ if (ltmp <= 0) {
+ (void) fprintf(stderr,
+ "%s: minimum valid (%d) is invalid\n",
+ progname, ltmp);
+ errflg++;
+ }
+ else
+ min_valid = ltmp;
+ break;
+ case '?':
+ ++errflg;
+ break;
+ default:
+ break;
+ }
+
+
+ if (errflg || ntp_optind < argc) {
+ fprintf(stderr,"usage: %s [switches...]\n",progname);
+ fprintf(stderr," -v (verbose)\n");
+ fprintf(stderr," -c path (set config file path)\n");
+ fprintf(stderr," -a key (authenticate using key)\n");
+ fprintf(stderr," -e delay (authentication delay)\n");
+ fprintf(stderr," -S num (# of servers that must respond)\n");
+ fprintf(stderr," -V num (# of servers that must valid)\n");
+ fprintf(stderr," -s (set the time based if okay)\n");
+ fprintf(stderr," -t secs (time period before ending)\n");
+ fprintf(stderr," -l (use syslog facility)\n");
+ fprintf(stderr," -u (use unprivileged port)\n");
+ fprintf(stderr," -H (drop packets for debugging)\n");
+ fprintf(stderr," -d (debug output)\n");
+ exit(2);
+ }
+
+ /*
+ * Logging. Open the syslog if we have to
+ */
+ if (syslogit) {
+#if !defined (SYS_WINNT) && !defined (SYS_VXWORKS) && !defined SYS_CYGWIN32
+# ifndef LOG_DAEMON
+ openlog("ntptimeset", LOG_PID);
+# else
+
+# ifndef LOG_NTP
+# define LOG_NTP LOG_DAEMON
+# endif
+ openlog("ntptimeset", LOG_PID | LOG_NDELAY, LOG_NTP);
+ if (debug)
+ setlogmask(LOG_UPTO(LOG_DEBUG));
+ else
+ setlogmask(LOG_UPTO(LOG_INFO));
+# endif /* LOG_DAEMON */
+#endif /* SYS_WINNT */
+ }
+
+ if (debug || verbose)
+ msyslog(LOG_INFO, "%s", Version);
+
+ if (horrible)
+ msyslog(LOG_INFO, "Dropping %d out of %d packets",
+ horrible,horrible+HORRIBLEOK);
+ /*
+ * Add servers we are going to be polling
+ */
+ loadservers(cfgpath);
+
+ if (sys_numservers < min_servers) {
+ msyslog(LOG_ERR, "Found %d servers, require %d servers",
+ sys_numservers,min_servers);
+ exit(2);
+ }
+
+ /*
+ * determine when we will end at least
+ */
+ finish_time = max_period * TIMER_HZ;
+ half_time = finish_time >> 1;
+
+ /*
+ * Initialize the time of day routines and the I/O subsystem
+ */
+ if (sys_authenticate) {
+ init_auth();
+#ifdef SYS_WINNT
+ if (!key_file) key_file = KEYFILE;
+ if (!ExpandEnvironmentStrings(key_file, key_file_storage, MAX_PATH))
+ {
+ msyslog(LOG_ERR, "ExpandEnvironmentStrings(%s) failed: %m\n",
+ key_file);
+ } else {
+ key_file = key_file_storage;
+ }
+#endif /* SYS_WINNT */
+
+ if (!authreadkeys(key_file)) {
+ msyslog(LOG_ERR, "no key file, exiting");
+ exit(1);
+ }
+ if (!authistrusted(sys_authkey)) {
+ char buf[10];
+
+ (void) sprintf(buf, "%lu", (unsigned long)sys_authkey);
+ msyslog(LOG_ERR, "authentication key %s unknown", buf);
+ exit(1);
+ }
+ }
+ init_io();
+ init_alarm();
+
+ /*
+ * Set the priority.
+ */
+#ifdef SYS_VXWORKS
+ taskPrioritySet( taskIdSelf(), NTPDATE_PRIO);
+#endif
+#if defined(HAVE_ATT_NICE)
+ nice (NTPDATE_PRIO);
+#endif
+#if defined(HAVE_BSD_NICE)
+ (void) setpriority(PRIO_PROCESS, 0, NTPDATE_PRIO);
+#endif
+#ifdef SYS_WINNT
+ process_handle = GetCurrentProcess();
+ if (!SetPriorityClass(process_handle, (DWORD) REALTIME_PRIORITY_CLASS)) {
+ msyslog(LOG_ERR, "SetPriorityClass failed: %m");
+ }
+#endif /* SYS_WINNT */
+
+ initializing = 0;
+
+ /*
+ * Use select() on all on all input fd's for unlimited
+ * time. select() will terminate on SIGALARM or on the
+ * reception of input. Using select() means we can't do
+ * robust signal handling and we get a potential race
+ * between checking for alarms and doing the select().
+ * Mostly harmless, I think.
+ * Keep going until we have enough information, or time is up.
+ */
+ /* On VMS, I suspect that select() can't be interrupted
+ * by a "signal" either, so I take the easy way out and
+ * have select() time out after one second.
+ * System clock updates really aren't time-critical,
+ * and - lacking a hardware reference clock - I have
+ * yet to learn about anything else that is.
+ */
+ was_alarmed = 0;
+ rbuflist = (struct recvbuf *)0;
+ while (finish_time > current_time) {
+#if !defined(HAVE_SIGNALED_IO)
+ fd_set rdfdes;
+ int nfound;
+#elif defined(HAVE_SIGNALED_IO)
+ block_io_and_alarm();
+#endif
+
+ rbuflist = getrecvbufs(); /* get received buffers */
+ if (printmsg) {
+ printmsg = 0;
+ analysis(0);
+ }
+ if (alarm_flag) { /* alarmed? */
+ was_alarmed = 1;
+ alarm_flag = 0;
+ }
+
+ if (!was_alarmed && rbuflist == (struct recvbuf *)0) {
+ /*
+ * Nothing to do. Wait for something.
+ */
+#ifndef HAVE_SIGNALED_IO
+ rdfdes = fdmask;
+# if defined(VMS) || defined(SYS_VXWORKS)
+ /* make select() wake up after one second */
+ {
+ struct timeval t1;
+
+ t1.tv_sec = 1; t1.tv_usec = 0;
+ nfound = select(fd+1, &rdfdes, (fd_set *)0,
+ (fd_set *)0, &t1);
+ }
+# else
+ nfound = select(fd+1, &rdfdes, (fd_set *)0,
+ (fd_set *)0, (struct timeval *)0);
+# endif /* VMS */
+ if (nfound > 0) {
+ l_fp ts;
+ get_systime(&ts);
+ (void)input_handler(&ts);
+ }
+ else if (nfound == -1 && errno != EINTR)
+ msyslog(LOG_ERR, "select() error: %m");
+ else if (debug) {
+# if !defined SYS_VXWORKS && !defined SYS_CYGWIN32 /* to unclutter log */
+ msyslog(LOG_DEBUG, "select(): nfound=%d, error: %m", nfound);
+# endif
+ }
+#else /* HAVE_SIGNALED_IO */
+
+ wait_for_signal();
+#endif /* HAVE_SIGNALED_IO */
+ if (alarm_flag) /* alarmed? */
+ {
+ was_alarmed = 1;
+ alarm_flag = 0;
+ }
+ rbuflist = getrecvbufs(); /* get received buffers */
+ }
+#ifdef HAVE_SIGNALED_IO
+ unblock_io_and_alarm();
+#endif /* HAVE_SIGNALED_IO */
+
+ /*
+ * Out here, signals are unblocked. Call timer routine
+ * to process expiry.
+ */
+ if (was_alarmed)
+ {
+ timer();
+ was_alarmed = 0;
+ }
+
+ /*
+ * Call the data procedure to handle each received
+ * packet.
+ */
+ while (rbuflist != (struct recvbuf *)0)
+ {
+ rbuf = rbuflist;
+ rbuflist = rbuf->next;
+ receive(rbuf);
+ freerecvbuf(rbuf);
+ }
+#if defined DEBUG && defined SYS_WINNT
+ if (debug > 4)
+ printf("getrecvbufs: %ld handler interrupts, %ld frames\n",
+ handler_calls, handler_pkts);
+#endif
+
+ /*
+ * Do we have enough information to stop now?
+ */
+ if (have_enough())
+ break; /* time to end */
+
+ /*
+ * Go around again
+ */
+ }
+
+ /*
+ * adjust the clock and exit accordingly
+ */
+ set_local_clock();
+
+ /*
+ * if we get here then we are in trouble
+ */
+ exit(1);
+}
+
+
+/*
+ * analysis - print a message indicating what is happening with time service
+ * must mimic have_enough() procedure.
+ */
+static void
+analysis(
+ int final
+ )
+{
+ if (contacted < sys_numservers) {
+ printf("%d servers of %d have been probed with %d packets\n",
+ contacted,sys_numservers,MINTRANSMITS);
+ return;
+ }
+ if (!responding) {
+ printf("No response from any of %d servers, network problem?\n",
+ sys_numservers);
+ return;
+ }
+ else if (responding < min_servers) {
+ printf("%d servers out of %d responding, need at least %d.\n",
+ responding, sys_numservers, min_servers);
+ return;
+ }
+ if (!validcount) {
+ printf("%d servers responding but none have valid time\n",
+ responding);
+ return;
+ }
+ else if (validcount < min_valid) {
+ printf("%d servers responding, %d are valid, need %d valid\n",
+ responding,validcount,min_valid);
+ return;
+ }
+ if (!final && valid_n_low != validcount) {
+ printf("%d valid servers but only %d have low dispersion\n",
+ validcount,valid_n_low);
+ return;
+ }
+}
+
+
+/* have_enough - see if we have enough information to terminate probing
+ */
+static int
+have_enough(void)
+{
+ /* have we contacted all servers yet? */
+ if (contacted < sys_numservers)
+ return 0; /* no...try some more */
+
+ /* have we got at least minimum servers responding? */
+ if (responding < min_servers)
+ return 0; /* no...try some more */
+
+ /* count the clocks */
+ (void) clock_count();
+
+ /* have we got at least minimum valid clocks? */
+ if (validcount <= 0 || validcount < min_valid)
+ return 0; /* no...try some more */
+
+ /* do we have all valid servers with low dispersion */
+ if (!secondhalf && valid_n_low != validcount)
+ return 0;
+
+ /* if we get into the secondhalf then we ignore dispersion */
+
+ /* all conditions have been met...end */
+ return 1;
+}
+
+
+/*
+ * transmit - transmit a packet to the given server, or mark it completed.
+ * This is called by the timeout routine and by the receive
+ * procedure.
+ */
+static void
+transmit(
+ register struct server *server
+ )
+{
+ struct pkt xpkt;
+ int timeout;
+
+ if (debug > 2)
+ printf("transmit(%s)\n", ntoa(&server->srcadr));
+
+ if ((server->reach & 01) == 0) {
+ l_fp ts;
+ /*
+ * Last message to this server timed out. Shift
+ * zeros into the filter.
+ */
+ L_CLR(&ts);
+ clock_filter(server, 0, &ts);
+ }
+
+ /*
+ * shift reachable register over
+ */
+ server->reach <<= 1;
+
+ /*
+ * If we're here, send another message to the server. Fill in
+ * the packet and let 'er rip.
+ */
+ xpkt.li_vn_mode = PKT_LI_VN_MODE(LEAP_NOTINSYNC,
+ server->version, MODE_CLIENT);
+ xpkt.stratum = STRATUM_TO_PKT(STRATUM_UNSPEC);
+ xpkt.ppoll = NTP_MINPOLL;
+ xpkt.precision = NTPDATE_PRECISION;
+ xpkt.rootdelay = htonl(NTPDATE_DISTANCE);
+ xpkt.rootdispersion = htonl(NTPDATE_DISP);
+ xpkt.refid = htonl(NTPDATE_REFID);
+ L_CLR(&xpkt.reftime);
+ L_CLR(&xpkt.org);
+ L_CLR(&xpkt.rec);
+
+ /*
+ * Determine whether to authenticate or not. If so,
+ * fill in the extended part of the packet and do it.
+ * If not, just timestamp it and send it away.
+ */
+ if (sys_authenticate) {
+ int len;
+
+ xpkt.keyid1 = htonl(sys_authkey);
+ get_systime(&server->xmt);
+ L_ADDUF(&server->xmt, sys_authdelay);
+ HTONL_FP(&server->xmt, &xpkt.xmt);
+ len = authencrypt(sys_authkey, (u_int32 *)&xpkt, LEN_PKT_NOMAC);
+ if (sendpkt(&(server->srcadr), &xpkt, LEN_PKT_NOMAC + len)) {
+ if (debug > 1)
+ printf("failed transmit auth to %s\n",
+ ntoa(&(server->srcadr)));
+ return;
+ }
+
+ if (debug > 1)
+ printf("transmit auth to %s\n",
+ ntoa(&(server->srcadr)));
+ } else {
+ get_systime(&(server->xmt));
+ HTONL_FP(&server->xmt, &xpkt.xmt);
+ if (sendpkt(&(server->srcadr), &xpkt, LEN_PKT_NOMAC)) {
+ if (debug > 1)
+ printf("failed transmit to %s\n",
+ ntoa(&(server->srcadr)));
+ return;
+ }
+
+ if (debug > 1)
+ printf("transmit to %s\n", ntoa(&(server->srcadr)));
+ }
+
+ /*
+ * count transmits, record contacted count and set transmit time
+ */
+ if (++server->xmtcnt == MINTRANSMITS)
+ contacted++;
+ server->last_xmit = current_time;
+
+ /*
+ * determine timeout for this packet. The more packets we send
+ * to the host, the slower we get. If the host indicates that
+ * it is not "sane" then we expect even less.
+ */
+ if (server->xmtcnt < MINTRANSMITS) {
+ /* we have not sent enough */
+ timeout = TIMER_HZ; /* 1 second probe */
+ }
+ else if (server->rcvcnt <= 0) {
+ /* we have heard nothing */
+ if (secondhalf)
+ timeout = TIMER_HZ<<4; /* 16 second probe */
+ else
+ timeout = TIMER_HZ<<3; /* 8 second probe */
+ }
+ else {
+ /* if we have low dispersion then probe infrequently */
+ if (server->dispersion <= DESIREDDISP)
+ timeout = TIMER_HZ<<4; /* 16 second probe */
+ /* if the server is not in sync then let it alone */
+ else if (server->leap == LEAP_NOTINSYNC)
+ timeout = TIMER_HZ<<4; /* 16 second probe */
+ /* if the server looks broken ignore it */
+ else if (server->org.l_ui < server->reftime.l_ui)
+ timeout = TIMER_HZ<<5; /* 32 second probe */
+ else if (secondhalf)
+ timeout = TIMER_HZ<<2; /* 4 second probe */
+ else
+ timeout = TIMER_HZ<<1; /* 2 second probe */
+ }
+
+ /*
+ * set next transmit time based on timeout
+ */
+ server->event_time = current_time + timeout;
+}
+
+
+/*
+ * receive - receive and process an incoming frame
+ */
+static void
+receive(
+ struct recvbuf *rbufp
+ )
+{
+ register struct pkt *rpkt;
+ register struct server *server;
+ register s_fp di;
+ l_fp t10, t23;
+ l_fp org;
+ l_fp rec;
+ l_fp ci;
+ int has_mac;
+ int is_authentic;
+
+ if (debug > 2)
+ printf("receive(%s)\n", ntoa(&rbufp->srcadr));
+ /*
+ * Check to see if the packet basically looks like something
+ * intended for us.
+ */
+ if (rbufp->recv_length == LEN_PKT_NOMAC)
+ has_mac = 0;
+ else if (rbufp->recv_length >= LEN_PKT_NOMAC)
+ has_mac = 1;
+ else {
+ if (debug > 2)
+ printf("receive: packet length %d\n",
+ rbufp->recv_length);
+ return; /* funny length packet */
+ }
+
+ rpkt = &(rbufp->recv_pkt);
+ if (PKT_VERSION(rpkt->li_vn_mode) < NTP_OLDVERSION ||
+ PKT_VERSION(rpkt->li_vn_mode) > NTP_VERSION) {
+ if (debug > 1)
+ printf("receive: bad version %d\n",
+ PKT_VERSION(rpkt->li_vn_mode));
+ return;
+ }
+
+ if ((PKT_MODE(rpkt->li_vn_mode) != MODE_SERVER
+ && PKT_MODE(rpkt->li_vn_mode) != MODE_PASSIVE)
+ || rpkt->stratum > NTP_MAXSTRATUM) {
+ if (debug > 1)
+ printf("receive: mode %d stratum %d\n",
+ PKT_MODE(rpkt->li_vn_mode), rpkt->stratum);
+ return;
+ }
+
+ /*
+ * So far, so good. See if this is from a server we know.
+ */
+ server = findserver(&(rbufp->srcadr));
+ if (server == NULL) {
+ if (debug > 1)
+ printf("receive: server not found\n");
+ return;
+ }
+
+ /*
+ * Decode the org timestamp and make sure we're getting a response
+ * to our last request.
+ */
+ NTOHL_FP(&rpkt->org, &org);
+ if (!L_ISEQU(&org, &server->xmt)) {
+ if (debug > 1)
+ printf("receive: pkt.org and peer.xmt differ\n");
+ return;
+ }
+
+ /*
+ * Check out the authenticity if we're doing that.
+ */
+ if (!sys_authenticate)
+ is_authentic = 1;
+ else {
+ is_authentic = 0;
+
+ if (debug > 3)
+ printf("receive: rpkt keyid=%ld sys_authkey=%ld decrypt=%ld\n",
+ (long int)ntohl(rpkt->keyid1), (long int)sys_authkey,
+ (long int)authdecrypt(sys_authkey, (u_int32 *)rpkt,
+ LEN_PKT_NOMAC, rbufp->recv_length - LEN_PKT_NOMAC));
+
+ if (has_mac && ntohl(rpkt->keyid1) == sys_authkey &&
+ authdecrypt(sys_authkey, (u_int32 *)rpkt, LEN_PKT_NOMAC,
+ rbufp->recv_length - LEN_PKT_NOMAC))
+ is_authentic = 1;
+ if (debug)
+ printf("receive: authentication %s\n",
+ is_authentic ? "passed" : "failed");
+ }
+ server->trust <<= 1;
+ if (!is_authentic)
+ server->trust |= 1;
+
+ /*
+ * Looks good. Record info from the packet.
+ */
+ server->leap = PKT_LEAP(rpkt->li_vn_mode);
+ server->stratum = PKT_TO_STRATUM(rpkt->stratum);
+ server->precision = rpkt->precision;
+ server->rootdelay = ntohl(rpkt->rootdelay);
+ server->rootdispersion = ntohl(rpkt->rootdispersion);
+ server->refid = rpkt->refid;
+ NTOHL_FP(&rpkt->reftime, &server->reftime);
+ NTOHL_FP(&rpkt->rec, &rec);
+ NTOHL_FP(&rpkt->xmt, &server->org);
+
+ /*
+ * count this guy as responding
+ */
+ server->reach |= 1;
+ if (server->rcvcnt++ == 0)
+ responding++;
+
+ /*
+ * Make sure the server is at least somewhat sane. If not, ignore
+ * it for later.
+ */
+ if (L_ISZERO(&rec) || !L_ISHIS(&server->org, &rec)) {
+ if (debug > 1)
+ printf("receive: pkt insane\n");
+ return;
+ }
+
+ /*
+ * Calculate the round trip delay (di) and the clock offset (ci).
+ * We use the equations (reordered from those in the spec):
+ *
+ * d = (t2 - t3) - (t1 - t0)
+ * c = ((t2 - t3) + (t1 - t0)) / 2
+ */
+ t10 = server->org; /* pkt.xmt == t1 */
+ L_SUB(&t10, &rbufp->recv_time); /* recv_time == t0*/
+
+ t23 = rec; /* pkt.rec == t2 */
+ L_SUB(&t23, &org); /* pkt->org == t3 */
+
+ /* now have (t2 - t3) and (t0 - t1). Calculate (ci) and (di) */
+ ci = t10;
+ L_ADD(&ci, &t23);
+ L_RSHIFT(&ci);
+
+ /*
+ * Calculate di in t23 in full precision, then truncate
+ * to an s_fp.
+ */
+ L_SUB(&t23, &t10);
+ di = LFPTOFP(&t23);
+
+ if (debug > 3)
+ printf("offset: %s, delay %s\n", lfptoa(&ci, 6), fptoa(di, 5));
+
+ di += (FP_SECOND >> (-(int)NTPDATE_PRECISION))
+ + (FP_SECOND >> (-(int)server->precision)) + NTP_MAXSKW;
+
+ if (di <= 0) { /* value still too raunchy to use? */
+ L_CLR(&ci);
+ di = 0;
+ } else {
+ di = max(di, NTP_MINDIST);
+ }
+
+
+ /*
+ * This one is valid. Give it to clock_filter(),
+ */
+ clock_filter(server, di, &ci);
+ if (debug > 1)
+ printf("receive from %s\n", ntoa(&rbufp->srcadr));
+
+ /*
+ * See if we should goes the transmission. If not return now
+ * otherwise have the next event time be shortened
+ */
+ if (server->stratum <= NTP_INFIN)
+ return; /* server does not have a stratum */
+ if (server->leap == LEAP_NOTINSYNC)
+ return; /* just booted server or out of sync */
+ if (!L_ISHIS(&server->org, &server->reftime))
+ return; /* broken host */
+ if (server->trust != 0)
+ return; /* can not trust it */
+
+ if (server->dispersion < DESIREDDISP)
+ return; /* we have the desired dispersion */
+
+ server->event_time -= (TIMER_HZ+1);
+}
+
+
+/*
+ * clock_filter - add clock sample, determine a server's delay, dispersion
+ * and offset
+ */
+static void
+clock_filter(
+ register struct server *server,
+ s_fp di,
+ l_fp *c
+ )
+{
+ register int i, j;
+ int ord[NTP_SHIFT];
+
+ /*
+ * Insert sample and increment nextpt
+ */
+
+ i = server->filter_nextpt;
+ server->filter_delay[i] = di;
+ server->filter_offset[i] = *c;
+ server->filter_soffset[i] = LFPTOFP(c);
+ server->filter_nextpt++;
+ if (server->filter_nextpt >= NTP_SHIFT)
+ server->filter_nextpt = 0;
+
+ /*
+ * Sort indices into increasing delay order
+ */
+ for (i = 0; i < NTP_SHIFT; i++)
+ ord[i] = i;
+
+ for (i = 0; i < (NTP_SHIFT-1); i++) {
+ for (j = i+1; j < NTP_SHIFT; j++) {
+ if (server->filter_delay[ord[j]] == 0)
+ continue;
+ if (server->filter_delay[ord[i]] == 0
+ || (server->filter_delay[ord[i]]
+ > server->filter_delay[ord[j]])) {
+ register int tmp;
+
+ tmp = ord[i];
+ ord[i] = ord[j];
+ ord[j] = tmp;
+ }
+ }
+ }
+
+ /*
+ * Now compute the dispersion, and assign values to delay and
+ * offset. If there are no samples in the register, delay and
+ * offset go to zero and dispersion is set to the maximum.
+ */
+ if (server->filter_delay[ord[0]] == 0) {
+ server->delay = 0;
+ L_CLR(&server->offset);
+ server->soffset = 0;
+ server->dispersion = PEER_MAXDISP;
+ } else {
+ register s_fp d;
+
+ server->delay = server->filter_delay[ord[0]];
+ server->offset = server->filter_offset[ord[0]];
+ server->soffset = LFPTOFP(&server->offset);
+ server->dispersion = 0;
+ for (i = 1; i < NTP_SHIFT; i++) {
+ if (server->filter_delay[ord[i]] == 0)
+ d = PEER_MAXDISP;
+ else {
+ d = server->filter_soffset[ord[i]]
+ - server->filter_soffset[ord[0]];
+ if (d < 0)
+ d = -d;
+ if (d > PEER_MAXDISP)
+ d = PEER_MAXDISP;
+ }
+ /*
+ * XXX This *knows* PEER_FILTER is 1/2
+ */
+ server->dispersion += (u_fp)(d) >> i;
+ }
+ }
+ /*
+ * We're done
+ */
+}
+
+
+/* clock_count - count the clock sources we have
+ */
+static void
+clock_count(void)
+{
+ register struct server *server;
+ register int n;
+
+ /* reset counts */
+ validcount = valid_n_low = 0;
+
+ /* go through the list of servers and count the clocks we believe
+ * and that have low dispersion
+ */
+ for (n = 0; n < sys_numservers; n++) {
+ server = sys_servers[n];
+ if (server->delay == 0) {
+ continue; /* no data */
+ }
+ if (server->stratum > NTP_INFIN) {
+ continue; /* stratum no good */
+ }
+ if (server->delay > NTP_MAXWGT) {
+ continue; /* too far away */
+ }
+ if (server->leap == LEAP_NOTINSYNC)
+ continue; /* he's in trouble */
+ if (!L_ISHIS(&server->org, &server->reftime)) {
+ continue; /* very broken host */
+ }
+ if ((server->org.l_ui - server->reftime.l_ui) >= NTP_MAXAGE) {
+ continue; /* too long without sync */
+ }
+ if (server->trust != 0) {
+ continue;
+ }
+
+ /*
+ * This one is a valid time source..
+ */
+ validcount++;
+
+ /*
+ * See if this one has a okay low dispersion
+ */
+ if (server->dispersion <= DESIREDDISP)
+ valid_n_low++;
+ }
+
+ if (debug > 1)
+ printf("have %d, valid %d, low %d\n",
+ responding, validcount, valid_n_low);
+}
+
+
+/*
+ * clock_select - select the pick-of-the-litter clock from the samples
+ * we've got.
+ */
+static struct server *
+clock_select(void)
+{
+ register struct server *server;
+ register int i;
+ register int nlist;
+ register s_fp d;
+ register int j;
+ register int n;
+ s_fp local_threshold;
+ struct server *server_list[NTP_MAXCLOCK];
+ u_fp server_badness[NTP_MAXCLOCK];
+ struct server *sys_server;
+
+ /*
+ * This first chunk of code is supposed to go through all
+ * servers we know about to find the NTP_MAXLIST servers which
+ * are most likely to succeed. We run through the list
+ * doing the sanity checks and trying to insert anyone who
+ * looks okay. We are at all times aware that we should
+ * only keep samples from the top two strata and we only need
+ * NTP_MAXLIST of them.
+ */
+ nlist = 0; /* none yet */
+ for (n = 0; n < sys_numservers; n++) {
+ server = sys_servers[n];
+ if (server->delay == 0)
+ continue; /* no data */
+ if (server->stratum > NTP_INFIN)
+ continue; /* stratum no good */
+ if (server->delay > NTP_MAXWGT) {
+ continue; /* too far away */
+ }
+ if (server->leap == LEAP_NOTINSYNC)
+ continue; /* he's in trouble */
+ if (!L_ISHIS(&server->org, &server->reftime)) {
+ continue; /* very broken host */
+ }
+ if ((server->org.l_ui - server->reftime.l_ui)
+ >= NTP_MAXAGE) {
+ continue; /* too long without sync */
+ }
+ if (server->trust != 0) {
+ continue;
+ }
+
+ /*
+ * This one seems sane. Find where he belongs
+ * on the list.
+ */
+ d = server->dispersion + server->dispersion;
+ for (i = 0; i < nlist; i++)
+ if (server->stratum <= server_list[i]->stratum)
+ break;
+ for ( ; i < nlist; i++) {
+ if (server->stratum < server_list[i]->stratum)
+ break;
+ if (d < (s_fp) server_badness[i])
+ break;
+ }
+
+ /*
+ * If i points past the end of the list, this
+ * guy is a loser, else stick him in.
+ */
+ if (i >= NTP_MAXLIST)
+ continue;
+ for (j = nlist; j > i; j--)
+ if (j < NTP_MAXLIST) {
+ server_list[j] = server_list[j-1];
+ server_badness[j]
+ = server_badness[j-1];
+ }
+
+ server_list[i] = server;
+ server_badness[i] = d;
+ if (nlist < NTP_MAXLIST)
+ nlist++;
+ }
+
+ /*
+ * Got the five-or-less best. Cut the list where the number of
+ * strata exceeds two.
+ */
+ j = 0;
+ for (i = 1; i < nlist; i++)
+ if (server_list[i]->stratum > server_list[i-1]->stratum)
+ if (++j == 2) {
+ nlist = i;
+ break;
+ }
+
+ /*
+ * Whew! What we should have by now is 0 to 5 candidates for
+ * the job of syncing us. If we have none, we're out of luck.
+ * If we have one, he's a winner. If we have more, do falseticker
+ * detection.
+ */
+
+ if (nlist == 0)
+ sys_server = 0;
+ else if (nlist == 1) {
+ sys_server = server_list[0];
+ } else {
+ /*
+ * Re-sort by stratum, bdelay estimate quality and
+ * server.delay.
+ */
+ for (i = 0; i < nlist-1; i++)
+ for (j = i+1; j < nlist; j++) {
+ if (server_list[i]->stratum
+ < server_list[j]->stratum)
+ break; /* already sorted by stratum */
+ if (server_list[i]->delay
+ < server_list[j]->delay)
+ continue;
+ server = server_list[i];
+ server_list[i] = server_list[j];
+ server_list[j] = server;
+ }
+
+ /*
+ * Calculate the fixed part of the dispersion limit
+ */
+ local_threshold = (FP_SECOND >> (-(int)NTPDATE_PRECISION))
+ + NTP_MAXSKW;
+
+ /*
+ * Now drop samples until we're down to one.
+ */
+ while (nlist > 1) {
+ for (n = 0; n < nlist; n++) {
+ server_badness[n] = 0;
+ for (j = 0; j < nlist; j++) {
+ if (j == n) /* with self? */
+ continue;
+ d = server_list[j]->soffset
+ - server_list[n]->soffset;
+ if (d < 0) /* absolute value */
+ d = -d;
+ /*
+ * XXX This code *knows* that
+ * NTP_SELECT is 3/4
+ */
+ for (i = 0; i < j; i++)
+ d = (d>>1) + (d>>2);
+ server_badness[n] += d;
+ }
+ }
+
+ /*
+ * We now have an array of nlist badness
+ * coefficients. Find the badest. Find
+ * the minimum precision while we're at
+ * it.
+ */
+ i = 0;
+ n = server_list[0]->precision;;
+ for (j = 1; j < nlist; j++) {
+ if (server_badness[j] >= server_badness[i])
+ i = j;
+ if (n > server_list[j]->precision)
+ n = server_list[j]->precision;
+ }
+
+ /*
+ * i is the index of the server with the worst
+ * dispersion. If his dispersion is less than
+ * the threshold, stop now, else delete him and
+ * continue around again.
+ */
+ if (server_badness[i] < (local_threshold
+ + (FP_SECOND >> (-n))))
+ break;
+ for (j = i + 1; j < nlist; j++)
+ server_list[j-1] = server_list[j];
+ nlist--;
+ }
+
+ /*
+ * What remains is a list of less than 5 servers. Take
+ * the best.
+ */
+ sys_server = server_list[0];
+ }
+
+ /*
+ * That's it. Return our server.
+ */
+ return sys_server;
+}
+
+
+/*
+ * set_local_clock -- handle setting the local clock or displaying info.
+ */
+static void
+set_local_clock(void)
+{
+ register int i;
+ register struct server *server;
+ time_t tmp;
+ double dtemp;
+
+ /*
+ * if setting time then print final analysis
+ */
+ if (set_time)
+ analysis(1);
+
+ /*
+ * pick a clock
+ */
+ server = clock_select();
+
+ /*
+ * do some display of information
+ */
+ if (debug || verbose) {
+ for (i = 0; i < sys_numservers; i++)
+ printserver(sys_servers[i], stdout);
+ if (debug)
+ printf("packets sent %ld, received %ld\n",
+ total_xmit, total_recv);
+ }
+
+ /*
+ * see if we have a server to set the time with
+ */
+ if (server == 0) {
+ if (!set_time || verbose)
+ fprintf(stdout,"No servers available to sync time with\n");
+ exit(1);
+ }
+
+ /*
+ * we have a valid and selected time to use!!!!!
+ */
+
+ /*
+ * if we are not setting the time then display offset and exit
+ */
+ if (!set_time) {
+ fprintf(stdout,
+ "Your clock is off by %s seconds. (%s) [%ld/%ld]\n",
+ lfptoa(&server->offset, 7),
+ ntoa(&server->srcadr),
+ total_xmit, total_recv);
+ exit(0);
+ }
+
+ /*
+ * set the clock
+ * XXX: Examine the more flexible approach used by ntpdate.
+ * Note that a design consideration here is that we sometimes
+ * _want_ to step the clock by a _huge_ amount in either
+ * direction, because the local clock is completely bogus.
+ * This condition must be recognized and dealt with, so
+ * that we always get a good time when this completes.
+ * -- jhutz+@cmu.edu, 16-Aug-1999
+ */
+ LFPTOD(&server->offset, dtemp);
+ step_systime(dtemp);
+ time(&tmp);
+ fprintf(stdout,"Time set to %.20s [%s %s %ld/%ld]\n",
+ ctime(&tmp)+4,
+ ntoa(&server->srcadr),
+ lfptoa(&server->offset, 7),
+ total_xmit, total_recv);
+ exit(0);
+}
+
+
+/*
+ * findserver - find a server in the list given its address
+ */
+static struct server *
+findserver(
+ struct sockaddr_in *addr
+ )
+{
+ register int i;
+ register u_int32 netnum;
+
+ if (htons(addr->sin_port) != NTP_PORT)
+ return 0;
+ netnum = addr->sin_addr.s_addr;
+
+ for (i = 0; i < sys_numservers; i++) {
+ if (netnum == sys_servers[i]->srcadr.sin_addr.s_addr)
+ return sys_servers[i];
+ }
+ return 0;
+}
+
+
+/*
+ * timer - process a timer interrupt
+ */
+static void
+timer(void)
+{
+ register int k;
+
+ /*
+ * Bump the current idea of the time
+ */
+ current_time++;
+
+ /*
+ * see if we have reached half time
+ */
+ if (current_time >= half_time && !secondhalf) {
+ secondhalf++;
+ if (debug)
+ printf("\nSecond Half of Timeout!\n");
+ printmsg++;
+ }
+
+ /*
+ * We only want to send a few packets per transmit interrupt
+ * to throttle things
+ */
+ for(k = 0;k < MAXXMITCOUNT;k++) {
+ register int i, oldi;
+ register u_long oldxtime;
+
+ /*
+ * We want to send a packet out for a server that has an
+ * expired event time. However to be mellow about this, we only
+ * use one expired event timer and to avoid starvation we use
+ * the one with the oldest last transmit time.
+ */
+ oldi = -1;
+ oldxtime = 0;
+ for (i = 0; i < sys_numservers; i++) {
+ if (sys_servers[i]->event_time <= current_time) {
+ if (oldi < 0 || oldxtime > sys_servers[i]->last_xmit) {
+ oldxtime = sys_servers[i]->last_xmit;
+ oldi = i;
+ }
+ }
+ }
+ if (oldi >= 0)
+ transmit(sys_servers[oldi]);
+ else
+ break; /* no expired event */
+ } /* end of transmit loop */
+}
+
+
+#ifndef SYS_WINNT
+/*
+ * alarming - record the occurance of an alarm interrupt
+ */
+static RETSIGTYPE
+alarming(
+ int sig
+ )
+#else
+void CALLBACK
+alarming(UINT uTimerID, UINT uMsg, DWORD dwUser, DWORD dw1, DWORD dw2)
+#endif /* SYS_WINNT */
+{
+ alarm_flag++;
+}
+
+
+/*
+ * init_alarm - set up the timer interrupt
+ */
+static void
+init_alarm(void)
+{
+#ifndef SYS_WINNT
+# ifndef HAVE_TIMER_SETTIME
+ struct itimerval itimer;
+# else
+ struct itimerspec ntpdate_itimer;
+# endif
+#else
+ TIMECAPS tc;
+ UINT wTimerRes, wTimerID;
+# endif /* SYS_WINNT */
+#if defined SYS_CYGWIN32 || defined SYS_WINNT
+ HANDLE hToken;
+ TOKEN_PRIVILEGES tkp;
+ DWORD dwUser = 0;
+#endif /* SYS_WINNT */
+
+ alarm_flag = 0;
+
+#ifndef SYS_WINNT
+# if defined(HAVE_TIMER_CREATE) && defined(HAVE_TIMER_SETTIME)
+ alarm_flag = 0;
+ /* this code was put in as setitimer() is non existant this us the
+ * POSIX "equivalents" setup - casey
+ */
+ /* ntpdate_timerid is global - so we can kill timer later */
+ if (timer_create (CLOCK_REALTIME, NULL, &ntpdate_timerid) ==
+# ifdef SYS_VXWORKS
+ ERROR
+# else
+ -1
+# endif
+ )
+ {
+ fprintf (stderr, "init_alarm(): timer_create (...) FAILED\n");
+ return;
+ }
+
+ /* TIMER_HZ = (5)
+ * Set up the alarm interrupt. The first comes 1/(2*TIMER_HZ)
+ * seconds from now and they continue on every 1/TIMER_HZ seconds.
+ */
+ (void) signal_no_reset(SIGALRM, alarming);
+ ntpdate_itimer.it_interval.tv_sec = ntpdate_itimer.it_value.tv_sec = 0;
+ ntpdate_itimer.it_interval.tv_nsec = 1000000000/TIMER_HZ;
+ ntpdate_itimer.it_value.tv_nsec = 1000000000/(TIMER_HZ<<1);
+ timer_settime(ntpdate_timerid, 0 /* !TIMER_ABSTIME */, &ntpdate_itimer, NULL);
+# else
+ /*
+ * Set up the alarm interrupt. The first comes 1/(2*TIMER_HZ)
+ * seconds from now and they continue on every 1/TIMER_HZ seconds.
+ */
+ (void) signal_no_reset(SIGALRM, alarming);
+ itimer.it_interval.tv_sec = itimer.it_value.tv_sec = 0;
+ itimer.it_interval.tv_usec = 1000000/TIMER_HZ;
+ itimer.it_value.tv_usec = 1000000/(TIMER_HZ<<1);
+ setitimer(ITIMER_REAL, &itimer, (struct itimerval *)0);
+# endif
+#if defined SYS_CYGWIN32
+ /*
+ * Get previleges needed for fiddling with the clock
+ */
+
+ /* get the current process token handle */
+ if (!OpenProcessToken(GetCurrentProcess(), TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken)) {
+ msyslog(LOG_ERR, "OpenProcessToken failed: %m");
+ exit(1);
+ }
+ /* get the LUID for system-time privilege. */
+ LookupPrivilegeValue(NULL, SE_SYSTEMTIME_NAME, &tkp.Privileges[0].Luid);
+ tkp.PrivilegeCount = 1; /* one privilege to set */
+ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
+ /* get set-time privilege for this process. */
+ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES) NULL, 0);
+ /* cannot test return value of AdjustTokenPrivileges. */
+ if (GetLastError() != ERROR_SUCCESS)
+ msyslog(LOG_ERR, "AdjustTokenPrivileges failed: %m");
+#endif
+#else /* SYS_WINNT */
+ _tzset();
+
+ /*
+ * Get previleges needed for fiddling with the clock
+ */
+
+ /* get the current process token handle */
+ if (!OpenProcessToken(GetCurrentProcess(), TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken)) {
+ msyslog(LOG_ERR, "OpenProcessToken failed: %m");
+ exit(1);
+ }
+ /* get the LUID for system-time privilege. */
+ LookupPrivilegeValue(NULL, SE_SYSTEMTIME_NAME, &tkp.Privileges[0].Luid);
+ tkp.PrivilegeCount = 1; /* one privilege to set */
+ tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;
+ /* get set-time privilege for this process. */
+ AdjustTokenPrivileges(hToken, FALSE, &tkp, 0,(PTOKEN_PRIVILEGES) NULL, 0);
+ /* cannot test return value of AdjustTokenPrivileges. */
+ if (GetLastError() != ERROR_SUCCESS)
+ msyslog(LOG_ERR, "AdjustTokenPrivileges failed: %m");
+
+ /*
+ * Set up timer interrupts for every 2**EVENT_TIMEOUT seconds
+ * Under Win/NT, expiry of timer interval leads to invocation
+ * of a callback function (on a different thread) rather than
+ * generating an alarm signal
+ */
+
+ /* determine max and min resolution supported */
+ if(timeGetDevCaps(&tc, sizeof(TIMECAPS)) != TIMERR_NOERROR) {
+ msyslog(LOG_ERR, "timeGetDevCaps failed: %m");
+ exit(1);
+ }
+ wTimerRes = min(max(tc.wPeriodMin, TARGET_RESOLUTION), tc.wPeriodMax);
+ /* establish the minimum timer resolution that we'll use */
+ timeBeginPeriod(wTimerRes);
+
+ /* start the timer event */
+ wTimerID = timeSetEvent(
+ (UINT) (1000/TIMER_HZ), /* Delay */
+ wTimerRes, /* Resolution */
+ (LPTIMECALLBACK) alarming, /* Callback function */
+ (DWORD) dwUser, /* User data */
+ TIME_PERIODIC); /* Event type (periodic) */
+ if (wTimerID == 0) {
+ msyslog(LOG_ERR, "timeSetEvent failed: %m");
+ exit(1);
+ }
+#endif /* SYS_WINNT */
+}
+
+
+/*
+ * init_io - initialize I/O data and open socket
+ */
+static void
+init_io(void)
+{
+#ifdef SYS_WINNT
+ WORD wVersionRequested;
+ WSADATA wsaData;
+ init_transmitbuff();
+#endif /* SYS_WINNT */
+
+ /*
+ * Init buffer free list and stat counters
+ */
+ init_recvbuff(sys_numservers + 2);
+
+#if defined(HAVE_SIGNALED_IO)
+ set_signal();
+#endif
+
+#ifdef SYS_WINNT
+ wVersionRequested = MAKEWORD(1,1);
+ if (WSAStartup(wVersionRequested, &wsaData))
+ {
+ msyslog(LOG_ERR, "No useable winsock.dll: %m");
+ exit(1);
+ }
+#endif /* SYS_WINNT */
+
+ BLOCKIO();
+
+ /* create a datagram (UDP) socket */
+ if ((fd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
+ msyslog(LOG_ERR, "socket() failed: %m");
+ exit(1);
+ /*NOTREACHED*/
+ }
+
+ /*
+ * bind the socket to the NTP port
+ */
+ if (!debug && set_time && !unpriv_port) {
+ struct sockaddr_in addr;
+
+ memset((char *)&addr, 0, sizeof addr);
+ addr.sin_family = AF_INET;
+ addr.sin_port = htons(NTP_PORT);
+ addr.sin_addr.s_addr = htonl(INADDR_ANY);
+ if (bind(fd, (struct sockaddr *)&addr, sizeof(addr)) < 0) {
+#ifndef SYS_WINNT
+ if (errno == EADDRINUSE)
+#else
+ if (WSAGetLastError() == WSAEADDRINUSE)
+#endif
+ msyslog(LOG_ERR,
+ "the NTP socket is in use, exiting");
+ else
+ msyslog(LOG_ERR, "bind() fails: %m");
+ exit(1);
+ }
+ }
+
+ FD_ZERO(&fdmask);
+ FD_SET(fd, &fdmask);
+
+ /*
+ * set non-blocking,
+ */
+
+#ifdef USE_FIONBIO
+ /* in vxWorks we use FIONBIO, but the others are defined for old systems, so
+ * all hell breaks loose if we leave them defined
+ */
+#undef O_NONBLOCK
+#undef FNDELAY
+#undef O_NDELAY
+#endif
+
+#if defined(O_NONBLOCK) /* POSIX */
+ if (fcntl(fd, F_SETFL, O_NONBLOCK) < 0)
+ {
+ msyslog(LOG_ERR, "fcntl(O_NONBLOCK) fails: %m");
+ exit(1);
+ /*NOTREACHED*/
+ }
+#elif defined(FNDELAY)
+ if (fcntl(fd, F_SETFL, FNDELAY) < 0)
+ {
+ msyslog(LOG_ERR, "fcntl(FNDELAY) fails: %m");
+ exit(1);
+ /*NOTREACHED*/
+ }
+#elif defined(O_NDELAY) /* generally the same as FNDELAY */
+ if (fcntl(fd, F_SETFL, O_NDELAY) < 0)
+ {
+ msyslog(LOG_ERR, "fcntl(O_NDELAY) fails: %m");
+ exit(1);
+ /*NOTREACHED*/
+ }
+#elif defined(FIONBIO)
+ if (
+# if defined(VMS)
+ (ioctl(fd,FIONBIO,&1) < 0)
+# elif defined(SYS_WINNT)
+ (ioctlsocket(fd,FIONBIO,(u_long *) &on) == SOCKET_ERROR)
+# else
+ (ioctl(fd,FIONBIO,&on) < 0)
+# endif
+ )
+ {
+ msyslog(LOG_ERR, "ioctl(FIONBIO) fails: %m");
+ exit(1);
+ /*NOTREACHED*/
+ }
+#elif defined(FIOSNBIO)
+ if (ioctl(fd,FIOSNBIO,&on) < 0)
+ {
+ msyslog(LOG_ERR, "ioctl(FIOSNBIO) fails: %m");
+ exit(1);
+ /*NOTREACHED*/
+ }
+#else
+# include "Bletch: Need non-blocking I/O!"
+#endif
+
+#ifdef HAVE_SIGNALED_IO
+ init_socket_sig(fd);
+#endif /* not HAVE_SIGNALED_IO */
+
+ UNBLOCKIO();
+}
+
+
+/*
+ * sendpkt - send a packet to the specified destination
+ */
+static int
+sendpkt(
+ struct sockaddr_in *dest,
+ struct pkt *pkt,
+ int len
+ )
+{
+ int cc;
+ static int horriblecnt = 0;
+#ifdef SYS_WINNT
+ DWORD err;
+#endif /* SYS_WINNT */
+
+ total_xmit++; /* count it */
+
+ if (horrible) {
+ if (++horriblecnt > HORRIBLEOK) {
+ if (debug > 3)
+ printf("dropping send (%s)\n", ntoa(dest));
+ if (horriblecnt >= HORRIBLEOK+horrible)
+ horriblecnt = 0;
+ return 0;
+ }
+ }
+
+
+ cc = sendto(fd, (char *)pkt, len, 0, (struct sockaddr *)dest,
+ sizeof(struct sockaddr_in));
+#ifndef SYS_WINNT
+ if (cc == -1) {
+ if (errno != EWOULDBLOCK && errno != ENOBUFS)
+#else
+ if (cc == SOCKET_ERROR) {
+ err = WSAGetLastError();
+ if (err != WSAEWOULDBLOCK && err != WSAENOBUFS)
+#endif /* SYS_WINNT */
+ msyslog(LOG_ERR, "sendto(%s): %m", ntoa(dest));
+ return -1;
+ }
+ return 0;
+}
+
+
+/*
+ * input_handler - receive packets asynchronously
+ */
+void
+input_handler(l_fp *xts)
+{
+ register int n;
+ register struct recvbuf *rb;
+ struct timeval tvzero;
+ int fromlen;
+ l_fp ts = *xts; /* we ignore xts, but make the compiler happy */
+ fd_set fds;
+
+ /*
+ * Do a poll to see if we have data
+ */
+ for (;;) {
+ fds = fdmask;
+ tvzero.tv_sec = tvzero.tv_usec = 0;
+ n = select(fd+1, &fds, (fd_set *)0, (fd_set *)0, &tvzero);
+
+ /*
+ * If nothing to do, just return. If an error occurred,
+ * complain and return. If we've got some, freeze a
+ * timestamp.
+ */
+ if (n == 0)
+ return;
+ else if (n == -1) {
+ if (errno != EINTR) {
+ msyslog(LOG_ERR, "select() error: %m");
+ }
+ return;
+ }
+ get_systime(&ts);
+
+ /*
+ * Get a buffer and read the frame. If we
+ * haven't got a buffer, or this is received
+ * on the wild card socket, just dump the packet.
+ */
+ if (initializing || free_recvbuffs == 0) {
+ char buf[100];
+
+#ifndef SYS_WINNT
+ (void) read(fd, buf, sizeof buf);
+#else
+ /* NT's _read does not operate on nonblocking sockets
+ * either recvfrom or ReadFile() has to be used here.
+ * ReadFile is used in [ntpd]ntp_intres() and ntpdc,
+ * just to be different use recvfrom() here
+ */
+ recvfrom(fd, buf, sizeof(buf), 0, (struct sockaddr *)0, NULL);
+#endif /* SYS_WINNT */
+ continue;
+ }
+
+ rb = get_free_recv_buffer();
+
+ fromlen = sizeof(struct sockaddr_in);
+ rb->recv_length = recvfrom(fd, (char *)&rb->recv_pkt,
+ sizeof(rb->recv_pkt), 0,
+ (struct sockaddr *)&rb->srcadr, &fromlen);
+ if (rb->recv_length == -1) {
+ freerecvbuf(rb);
+ continue;
+ }
+
+ /*
+ * Got one. Mark how and when it got here,
+ * put it on the full list.
+ */
+ rb->recv_time = ts;
+ add_full_recv_buffer(rb);
+ total_recv++; /* count it */
+ }
+}
+
+
+/* XXX ELIMINATE printserver similar in ntptrace.c, ntpdate.c */
+/*
+ * printserver - print detail information for a server
+ */
+static void
+printserver(
+ register struct server *pp,
+ FILE *fp
+ )
+{
+ register int i;
+ char junk[5];
+ char *str;
+
+ if (!debug) {
+ (void) fprintf(fp,
+ "%-15s %d/%d %03o v%d s%d offset %9s delay %s disp %s\n",
+ ntoa(&pp->srcadr),
+ pp->xmtcnt,pp->rcvcnt,pp->reach,
+ pp->version,pp->stratum,
+ lfptoa(&pp->offset, 6), ufptoa(pp->delay, 5),
+ ufptoa(pp->dispersion, 4));
+ return;
+ }
+
+ (void) fprintf(fp, "server %s, port %d\n",
+ ntoa(&pp->srcadr), ntohs(pp->srcadr.sin_port));
+
+ (void) fprintf(fp, "stratum %d, precision %d, leap %c%c, trust %03o\n",
+ pp->stratum, pp->precision,
+ pp->leap & 0x2 ? '1' : '0',
+ pp->leap & 0x1 ? '1' : '0',
+ pp->trust);
+
+ if (pp->stratum == 1) {
+ junk[4] = 0;
+ memmove(junk, (char *)&pp->refid, 4);
+ str = junk;
+ } else {
+ str = numtoa(pp->refid);
+ }
+ (void) fprintf(fp,
+ "refid [%s], delay %s, dispersion %s\n",
+ str, fptoa(pp->delay, 5),
+ ufptoa(pp->dispersion, 5));
+
+ (void) fprintf(fp, "transmitted %d, received %d, reachable %03o\n",
+ pp->xmtcnt, pp->rcvcnt, pp->reach);
+
+ (void) fprintf(fp, "reference time: %s\n",
+ prettydate(&pp->reftime));
+ (void) fprintf(fp, "originate timestamp: %s\n",
+ prettydate(&pp->org));
+ (void) fprintf(fp, "transmit timestamp: %s\n",
+ prettydate(&pp->xmt));
+
+ (void) fprintf(fp, "filter delay: ");
+ for (i = 0; i < NTP_SHIFT; i++) {
+ (void) fprintf(fp, " %-8.8s", fptoa(pp->filter_delay[i], 5));
+ if (i == (NTP_SHIFT>>1)-1)
+ (void) fprintf(fp, "\n ");
+ }
+ (void) fprintf(fp, "\n");
+
+ (void) fprintf(fp, "filter offset:");
+ for (i = 0; i < PEER_SHIFT; i++) {
+ (void) fprintf(fp, " %-8.8s", lfptoa(&pp->filter_offset[i], 6));
+ if (i == (PEER_SHIFT>>1)-1)
+ (void) fprintf(fp, "\n ");
+ }
+ (void) fprintf(fp, "\n");
+
+ (void) fprintf(fp, "delay %s, dispersion %s\n",
+ fptoa(pp->delay, 5), ufptoa(pp->dispersion, 5));
+
+ (void) fprintf(fp, "offset %s\n\n",
+ lfptoa(&pp->offset, 6));
+}
+
+#if !defined(HAVE_VSPRINTF)
+int
+vsprintf(
+ char *str,
+ const char *fmt,
+ va_list ap
+ )
+{
+ FILE f;
+ int len;
+
+ f._flag = _IOWRT+_IOSTRG;
+ f._ptr = str;
+ f._cnt = 32767;
+ len = _doprnt(fmt, ap, &f);
+ *f._ptr = 0;
+ return (len);
+}
+#endif
projects / thirdparty / ntp.git / commitdiff
