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conf.c
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/*
chronyd/chronyc - Programs for keeping computer clocks accurate.
**********************************************************************
* Copyright (C) Richard P. Curnow 1997-2003
* Copyright (C) Miroslav Lichvar 2009-2017, 2020
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
**********************************************************************
=======================================================================
Module that reads and processes the configuration file.
*/
#include "config.h"
#include "sysincl.h"
#include "array.h"
#include "conf.h"
#include "ntp_sources.h"
#include "ntp_core.h"
#include "nts_ke.h"
#include "refclock.h"
#include "cmdmon.h"
#include "socket.h"
#include "srcparams.h"
#include "logging.h"
#include "nameserv.h"
#include "memory.h"
#include "cmdparse.h"
#include "util.h"
/* ================================================== */
#define MAX_LINE_LENGTH 2048
#define MAX_CONF_DIRS 10
#define MAX_INCLUDE_LEVEL 10
/* ================================================== */
/* Forward prototypes */
static int parse_string(char *line, char **result);
static int parse_int(char *line, int *result);
static int parse_double(char *line, double *result);
static int parse_null(char *line);
static void parse_allow_deny(char *line, ARR_Instance restrictions, int allow);
static void parse_authselectmode(char *);
static void parse_bindacqaddress(char *);
static void parse_bindaddress(char *);
static void parse_bindcmdaddress(char *);
static void parse_broadcast(char *);
static void parse_clientloglimit(char *);
static void parse_confdir(char *);
static void parse_fallbackdrift(char *);
static void parse_hwtimestamp(char *);
static void parse_include(char *);
static void parse_initstepslew(char *);
static void parse_leapsecmode(char *);
static void parse_local(char *);
static void parse_log(char *);
static void parse_mailonchange(char *);
static void parse_makestep(char *);
static void parse_maxchange(char *);
static void parse_ntsserver(char *, ARR_Instance files);
static void parse_ntstrustedcerts(char *);
static void parse_ratelimit(char *line, int *enabled, int *interval,
int *burst, int *leak);
static void parse_refclock(char *);
static void parse_smoothtime(char *);
static void parse_source(char *line, char *type, int fatal);
static void parse_sourcedir(char *);
static void parse_tempcomp(char *);
/* ================================================== */
/* Configuration variables */
static int print_config = 0;
static int restarted = 0;
static char *rtc_device;
static int acquisition_port = -1;
static int ntp_port = NTP_PORT;
static char *keys_file = NULL;
static char *drift_file = NULL;
static char *rtc_file = NULL;
static double max_update_skew = 1000.0;
static double correction_time_ratio = 3.0;
static double max_clock_error = 1.0; /* in ppm */
static double max_drift = 500000.0; /* in ppm */
static double max_slew_rate = 1e6 / 12.0; /* in ppm */
static double clock_precision = 0.0; /* in seconds */
static SRC_AuthSelectMode authselect_mode = SRC_AUTHSELECT_MIX;
static double max_distance = 3.0;
static double max_jitter = 1.0;
static double reselect_distance = 1e-4;
static double stratum_weight = 1e-3;
static double combine_limit = 3.0;
static int cmd_port = DEFAULT_CANDM_PORT;
static int raw_measurements = 0;
static int do_log_measurements = 0;
static int do_log_statistics = 0;
static int do_log_tracking = 0;
static int do_log_rtc = 0;
static int do_log_refclocks = 0;
static int do_log_tempcomp = 0;
static int log_banner = 32;
static char *logdir = NULL;
static char *dumpdir = NULL;
static int enable_local=0;
static int local_stratum;
static int local_orphan;
static double local_distance;
/* Threshold (in seconds) - if absolute value of initial error is less
than this, slew instead of stepping */
static double init_slew_threshold;
/* Array of IPAddr */
static ARR_Instance init_sources;
static int enable_manual=0;
/* Flag set if the RTC runs UTC (default is it runs local time
incl. daylight saving). */
static int rtc_on_utc = 0;
/* Filename used to read the hwclock(8) LOCAL/UTC setting */
static char *hwclock_file;
/* Flag set if the RTC should be automatically synchronised by kernel */
static int rtc_sync = 0;
/* Limit and threshold for clock stepping */
static int make_step_limit = 0;
static double make_step_threshold = 0.0;
/* Threshold for automatic RTC trimming */
static double rtc_autotrim_threshold = 0.0;
/* Minimum number of selectables sources required to update the clock */
static int min_sources = 1;
/* Number of updates before offset checking, number of ignored updates
before exiting and the maximum allowed offset */
static int max_offset_delay = -1;
static int max_offset_ignore;
static double max_offset;
/* Maximum and minimum number of samples per source */
static int max_samples = 0; /* no limit */
static int min_samples = 6;
/* Threshold for a time adjustment to be logged to syslog */
static double log_change_threshold = 1.0;
static char *mail_user_on_change = NULL;
static double mail_change_threshold = 0.0;
/* Flag indicating that we don't want to log clients, e.g. to save
memory */
static int no_client_log = 0;
/* Limit memory allocated for the clients log */
static unsigned long client_log_limit = 524288;
/* Minimum and maximum fallback drift intervals */
static int fb_drift_min = 0;
static int fb_drift_max = 0;
/* IP addresses for binding the NTP server sockets to. UNSPEC family means
INADDR_ANY will be used */
static IPAddr bind_address4, bind_address6;
/* IP addresses for binding the NTP client sockets to. UNSPEC family means
INADDR_ANY will be used */
static IPAddr bind_acq_address4, bind_acq_address6;
/* IP addresses for binding the command socket to. UNSPEC family means
the loopback address will be used */
static IPAddr bind_cmd_address4, bind_cmd_address6;
/* Interface names to bind the NTP server, NTP client, and command socket */
static char *bind_ntp_iface = NULL;
static char *bind_acq_iface = NULL;
static char *bind_cmd_iface = NULL;
/* Path to the Unix domain command socket. */
static char *bind_cmd_path = NULL;
/* Differentiated Services Code Point (DSCP) in transmitted NTP packets */
static int ntp_dscp = 0;
/* Path to Samba (ntp_signd) socket. */
static char *ntp_signd_socket = NULL;
/* Filename to use for storing pid of running chronyd, to prevent multiple
* chronyds being started. */
static char *pidfile = NULL;
/* Rate limiting parameters */
static int ntp_ratelimit_enabled = 0;
static int ntp_ratelimit_interval = 3;
static int ntp_ratelimit_burst = 8;
static int ntp_ratelimit_leak = 2;
static int nts_ratelimit_enabled = 0;
static int nts_ratelimit_interval = 6;
static int nts_ratelimit_burst = 8;
static int nts_ratelimit_leak = 2;
static int cmd_ratelimit_enabled = 0;
static int cmd_ratelimit_interval = -4;
static int cmd_ratelimit_burst = 8;
static int cmd_ratelimit_leak = 2;
/* Smoothing constants */
static double smooth_max_freq = 0.0; /* in ppm */
static double smooth_max_wander = 0.0; /* in ppm/s */
static int smooth_leap_only = 0;
/* Temperature sensor, update interval and compensation coefficients */
static char *tempcomp_sensor_file = NULL;
static char *tempcomp_point_file = NULL;
static double tempcomp_interval;
static double tempcomp_T0, tempcomp_k0, tempcomp_k1, tempcomp_k2;
static int sched_priority = 0;
static int lock_memory = 0;
/* Leap second handling mode */
static REF_LeapMode leapsec_mode = REF_LeapModeSystem;
/* Name of a system timezone containing leap seconds occuring at midnight */
static char *leapsec_tz = NULL;
/* Name of the user to which will be dropped root privileges. */
static char *user;
/* NTS server and client configuration */
static char *nts_dump_dir = NULL;
static char *nts_ntp_server = NULL;
static ARR_Instance nts_server_cert_files; /* array of (char *) */
static ARR_Instance nts_server_key_files; /* array of (char *) */
static int nts_server_port = NKE_PORT;
static int nts_server_processes = 1;
static int nts_server_connections = 100;
static int nts_refresh = 2419200; /* 4 weeks */
static int nts_rotate = 604800; /* 1 week */
static ARR_Instance nts_trusted_certs_paths; /* array of (char *) */
static ARR_Instance nts_trusted_certs_ids; /* array of uint32_t */
/* Number of clock updates needed to enable certificate time checks */
static int no_cert_time_check = 0;
/* Flag disabling use of system trusted certificates */
static int no_system_cert = 0;
/* Array of CNF_HwTsInterface */
static ARR_Instance hwts_interfaces;
typedef struct {
NTP_Source_Type type;
int pool;
CPS_NTP_Source params;
} NTP_Source;
/* Array of NTP_Source */
static ARR_Instance ntp_sources;
/* Array of (char *) */
static ARR_Instance ntp_source_dirs;
/* Array of uint32_t corresponding to ntp_sources (for sourcedirs reload) */
static ARR_Instance ntp_source_ids;
/* Array of RefclockParameters */
static ARR_Instance refclock_sources;
typedef struct _AllowDeny {
IPAddr ip;
int subnet_bits;
int all; /* 1 to override existing more specific defns */
int allow; /* 0 for deny, 1 for allow */
} AllowDeny;
/* Arrays of AllowDeny */
static ARR_Instance ntp_restrictions;
static ARR_Instance cmd_restrictions;
typedef struct {
NTP_Remote_Address addr;
int interval;
} NTP_Broadcast_Destination;
/* Array of NTP_Broadcast_Destination */
static ARR_Instance broadcasts;
/* ================================================== */
/* The line number in the configuration file being processed */
static int line_number;
static const char *processed_file;
static const char *processed_command;
static int include_level = 0;
/* ================================================== */
static void
command_parse_error(void)
{
LOG_FATAL("Could not parse %s directive at line %d%s%s",
processed_command, line_number, processed_file ? " in file " : "",
processed_file ? processed_file : "");
}
/* ================================================== */
static void
other_parse_error(const char *message)
{
LOG_FATAL("%s at line %d%s%s",
message, line_number, processed_file ? " in file " : "",
processed_file ? processed_file : "");
}
/* ================================================== */
static int
get_number_of_args(char *line)
{
int num = 0;
/* The line is normalized, between arguments is just one space */
if (*line == ' ')
line++;
if (*line)
num++;
for (; *line; line++) {
if (*line == ' ')
num++;
}
return num;
}
/* ================================================== */
static void
check_number_of_args(char *line, int num)
{
num -= get_number_of_args(line);
if (num) {
LOG_FATAL("%s arguments for %s directive at line %d%s%s",
num > 0 ? "Missing" : "Too many",
processed_command, line_number, processed_file ? " in file " : "",
processed_file ? processed_file : "");
}
}
/* ================================================== */
void
CNF_Initialise(int r, int client_only)
{
restarted = r;
hwts_interfaces = ARR_CreateInstance(sizeof (CNF_HwTsInterface));
init_sources = ARR_CreateInstance(sizeof (IPAddr));
ntp_sources = ARR_CreateInstance(sizeof (NTP_Source));
ntp_source_dirs = ARR_CreateInstance(sizeof (char *));
ntp_source_ids = ARR_CreateInstance(sizeof (uint32_t));
refclock_sources = ARR_CreateInstance(sizeof (RefclockParameters));
broadcasts = ARR_CreateInstance(sizeof (NTP_Broadcast_Destination));
ntp_restrictions = ARR_CreateInstance(sizeof (AllowDeny));
cmd_restrictions = ARR_CreateInstance(sizeof (AllowDeny));
nts_server_cert_files = ARR_CreateInstance(sizeof (char *));
nts_server_key_files = ARR_CreateInstance(sizeof (char *));
nts_trusted_certs_paths = ARR_CreateInstance(sizeof (char *));
nts_trusted_certs_ids = ARR_CreateInstance(sizeof (uint32_t));
rtc_device = Strdup(DEFAULT_RTC_DEVICE);
hwclock_file = Strdup(DEFAULT_HWCLOCK_FILE);
user = Strdup(DEFAULT_USER);
if (client_only) {
cmd_port = ntp_port = 0;
} else {
bind_cmd_path = Strdup(DEFAULT_COMMAND_SOCKET);
pidfile = Strdup(DEFAULT_PID_FILE);
}
SCK_GetAnyLocalIPAddress(IPADDR_INET4, &bind_address4);
SCK_GetAnyLocalIPAddress(IPADDR_INET6, &bind_address6);
SCK_GetAnyLocalIPAddress(IPADDR_INET4, &bind_acq_address4);
SCK_GetAnyLocalIPAddress(IPADDR_INET6, &bind_acq_address6);
SCK_GetLoopbackIPAddress(IPADDR_INET4, &bind_cmd_address4);
SCK_GetLoopbackIPAddress(IPADDR_INET6, &bind_cmd_address6);
}
/* ================================================== */
void
CNF_Finalise(void)
{
unsigned int i;
for (i = 0; i < ARR_GetSize(hwts_interfaces); i++)
Free(((CNF_HwTsInterface *)ARR_GetElement(hwts_interfaces, i))->name);
ARR_DestroyInstance(hwts_interfaces);
for (i = 0; i < ARR_GetSize(ntp_sources); i++)
Free(((NTP_Source *)ARR_GetElement(ntp_sources, i))->params.name);
for (i = 0; i < ARR_GetSize(ntp_source_dirs); i++)
Free(*(char **)ARR_GetElement(ntp_source_dirs, i));
for (i = 0; i < ARR_GetSize(refclock_sources); i++) {
Free(((RefclockParameters *)ARR_GetElement(refclock_sources, i))->driver_name);
Free(((RefclockParameters *)ARR_GetElement(refclock_sources, i))->driver_parameter);
}
for (i = 0; i < ARR_GetSize(nts_server_cert_files); i++)
Free(*(char **)ARR_GetElement(nts_server_cert_files, i));
for (i = 0; i < ARR_GetSize(nts_server_key_files); i++)
Free(*(char **)ARR_GetElement(nts_server_key_files, i));
for (i = 0; i < ARR_GetSize(nts_trusted_certs_paths); i++)
Free(*(char **)ARR_GetElement(nts_trusted_certs_paths, i));
ARR_DestroyInstance(init_sources);
ARR_DestroyInstance(ntp_sources);
ARR_DestroyInstance(ntp_source_dirs);
ARR_DestroyInstance(ntp_source_ids);
ARR_DestroyInstance(refclock_sources);
ARR_DestroyInstance(broadcasts);
ARR_DestroyInstance(ntp_restrictions);
ARR_DestroyInstance(cmd_restrictions);
ARR_DestroyInstance(nts_server_cert_files);
ARR_DestroyInstance(nts_server_key_files);
ARR_DestroyInstance(nts_trusted_certs_paths);
ARR_DestroyInstance(nts_trusted_certs_ids);
Free(drift_file);
Free(dumpdir);
Free(hwclock_file);
Free(keys_file);
Free(leapsec_tz);
Free(logdir);
Free(bind_ntp_iface);
Free(bind_acq_iface);
Free(bind_cmd_iface);
Free(bind_cmd_path);
Free(ntp_signd_socket);
Free(pidfile);
Free(rtc_device);
Free(rtc_file);
Free(user);
Free(mail_user_on_change);
Free(tempcomp_sensor_file);
Free(tempcomp_point_file);
Free(nts_dump_dir);
Free(nts_ntp_server);
}
/* ================================================== */
void
CNF_EnablePrint(void)
{
print_config = 1;
}
/* ================================================== */
/* Read the configuration file */
void
CNF_ReadFile(const char *filename)
{
FILE *in;
char line[MAX_LINE_LENGTH + 1];
int i;
include_level++;
if (include_level > MAX_INCLUDE_LEVEL)
LOG_FATAL("Maximum include level reached");
in = UTI_OpenFile(NULL, filename, NULL, 'R', 0);
for (i = 1; fgets(line, sizeof(line), in); i++) {
CNF_ParseLine(filename, i, line);
}
fclose(in);
include_level--;
}
/* ================================================== */
/* Parse one configuration line */
void
CNF_ParseLine(const char *filename, int number, char *line)
{
char *p, *command;
/* Set global variables used in error messages */
processed_file = filename;
line_number = number;
/* Detect truncated line */
if (strlen(line) >= MAX_LINE_LENGTH)
other_parse_error("String too long");
/* Remove extra white-space and comments */
CPS_NormalizeLine(line);
/* Skip blank lines */
if (!*line) {
processed_file = NULL;
return;
}
/* We have a real line, now try to match commands */
processed_command = command = line;
p = CPS_SplitWord(line);
if (print_config && strcasecmp(command, "include") && strcasecmp(command, "confdir"))
printf("%s%s%s\n", command, p[0] != '\0' ? " " : "", p);
if (!strcasecmp(command, "acquisitionport")) {
parse_int(p, &acquisition_port);
} else if (!strcasecmp(command, "allow")) {
parse_allow_deny(p, ntp_restrictions, 1);
} else if (!strcasecmp(command, "authselectmode")) {
parse_authselectmode(p);
} else if (!strcasecmp(command, "bindacqaddress")) {
parse_bindacqaddress(p);
} else if (!strcasecmp(command, "bindacqdevice")) {
parse_string(p, &bind_acq_iface);
} else if (!strcasecmp(command, "bindaddress")) {
parse_bindaddress(p);
} else if (!strcasecmp(command, "bindcmdaddress")) {
parse_bindcmdaddress(p);
} else if (!strcasecmp(command, "bindcmddevice")) {
parse_string(p, &bind_cmd_iface);
} else if (!strcasecmp(command, "binddevice")) {
parse_string(p, &bind_ntp_iface);
} else if (!strcasecmp(command, "broadcast")) {
parse_broadcast(p);
} else if (!strcasecmp(command, "clientloglimit")) {
parse_clientloglimit(p);
} else if (!strcasecmp(command, "clockprecision")) {
parse_double(p, &clock_precision);
} else if (!strcasecmp(command, "cmdallow")) {
parse_allow_deny(p, cmd_restrictions, 1);
} else if (!strcasecmp(command, "cmddeny")) {
parse_allow_deny(p, cmd_restrictions, 0);
} else if (!strcasecmp(command, "cmdport")) {
parse_int(p, &cmd_port);
} else if (!strcasecmp(command, "cmdratelimit")) {
parse_ratelimit(p, &cmd_ratelimit_enabled, &cmd_ratelimit_interval,
&cmd_ratelimit_burst, &cmd_ratelimit_leak);
} else if (!strcasecmp(command, "combinelimit")) {
parse_double(p, &combine_limit);
} else if (!strcasecmp(command, "confdir")) {
parse_confdir(p);
} else if (!strcasecmp(command, "corrtimeratio")) {
parse_double(p, &correction_time_ratio);
} else if (!strcasecmp(command, "deny")) {
parse_allow_deny(p, ntp_restrictions, 0);
} else if (!strcasecmp(command, "driftfile")) {
parse_string(p, &drift_file);
} else if (!strcasecmp(command, "dscp")) {
parse_int(p, &ntp_dscp);
} else if (!strcasecmp(command, "dumpdir")) {
parse_string(p, &dumpdir);
} else if (!strcasecmp(command, "dumponexit")) {
/* Silently ignored */
} else if (!strcasecmp(command, "fallbackdrift")) {
parse_fallbackdrift(p);
} else if (!strcasecmp(command, "hwclockfile")) {
parse_string(p, &hwclock_file);
} else if (!strcasecmp(command, "hwtimestamp")) {
parse_hwtimestamp(p);
} else if (!strcasecmp(command, "include")) {
parse_include(p);
} else if (!strcasecmp(command, "initstepslew")) {
parse_initstepslew(p);
} else if (!strcasecmp(command, "keyfile")) {
parse_string(p, &keys_file);
} else if (!strcasecmp(command, "leapsecmode")) {
parse_leapsecmode(p);
} else if (!strcasecmp(command, "leapsectz")) {
parse_string(p, &leapsec_tz);
} else if (!strcasecmp(command, "local")) {
parse_local(p);
} else if (!strcasecmp(command, "lock_all")) {
lock_memory = parse_null(p);
} else if (!strcasecmp(command, "log")) {
parse_log(p);
} else if (!strcasecmp(command, "logbanner")) {
parse_int(p, &log_banner);
} else if (!strcasecmp(command, "logchange")) {
parse_double(p, &log_change_threshold);
} else if (!strcasecmp(command, "logdir")) {
parse_string(p, &logdir);
} else if (!strcasecmp(command, "mailonchange")) {
parse_mailonchange(p);
} else if (!strcasecmp(command, "makestep")) {
parse_makestep(p);
} else if (!strcasecmp(command, "manual")) {
enable_manual = parse_null(p);
} else if (!strcasecmp(command, "maxchange")) {
parse_maxchange(p);
} else if (!strcasecmp(command, "maxclockerror")) {
parse_double(p, &max_clock_error);
} else if (!strcasecmp(command, "maxdistance")) {
parse_double(p, &max_distance);
} else if (!strcasecmp(command, "maxdrift")) {
parse_double(p, &max_drift);
} else if (!strcasecmp(command, "maxjitter")) {
parse_double(p, &max_jitter);
} else if (!strcasecmp(command, "maxntsconnections")) {
parse_int(p, &nts_server_connections);
} else if (!strcasecmp(command, "maxsamples")) {
parse_int(p, &max_samples);
} else if (!strcasecmp(command, "maxslewrate")) {
parse_double(p, &max_slew_rate);
} else if (!strcasecmp(command, "maxupdateskew")) {
parse_double(p, &max_update_skew);
} else if (!strcasecmp(command, "minsamples")) {
parse_int(p, &min_samples);
} else if (!strcasecmp(command, "minsources")) {
parse_int(p, &min_sources);
} else if (!strcasecmp(command, "nocerttimecheck")) {
parse_int(p, &no_cert_time_check);
} else if (!strcasecmp(command, "noclientlog")) {
no_client_log = parse_null(p);
} else if (!strcasecmp(command, "nosystemcert")) {
no_system_cert = parse_null(p);
} else if (!strcasecmp(command, "ntpsigndsocket")) {
parse_string(p, &ntp_signd_socket);
} else if (!strcasecmp(command, "ntsratelimit")) {
parse_ratelimit(p, &nts_ratelimit_enabled, &nts_ratelimit_interval,
&nts_ratelimit_burst, &nts_ratelimit_leak);
} else if (!strcasecmp(command, "ntscachedir") ||
!strcasecmp(command, "ntsdumpdir")) {
parse_string(p, &nts_dump_dir);
} else if (!strcasecmp(command, "ntsntpserver")) {
parse_string(p, &nts_ntp_server);
} else if (!strcasecmp(command, "ntsport")) {
parse_int(p, &nts_server_port);
} else if (!strcasecmp(command, "ntsprocesses")) {
parse_int(p, &nts_server_processes);
} else if (!strcasecmp(command, "ntsrefresh")) {
parse_int(p, &nts_refresh);
} else if (!strcasecmp(command, "ntsrotate")) {
parse_int(p, &nts_rotate);
} else if (!strcasecmp(command, "ntsservercert")) {
parse_ntsserver(p, nts_server_cert_files);
} else if (!strcasecmp(command, "ntsserverkey")) {
parse_ntsserver(p, nts_server_key_files);
} else if (!strcasecmp(command, "ntstrustedcerts")) {
parse_ntstrustedcerts(p);
} else if (!strcasecmp(command, "peer")) {
parse_source(p, command, 1);
} else if (!strcasecmp(command, "pidfile")) {
parse_string(p, &pidfile);
} else if (!strcasecmp(command, "pool")) {
parse_source(p, command, 1);
} else if (!strcasecmp(command, "port")) {
parse_int(p, &ntp_port);
} else if (!strcasecmp(command, "ratelimit")) {
parse_ratelimit(p, &ntp_ratelimit_enabled, &ntp_ratelimit_interval,
&ntp_ratelimit_burst, &ntp_ratelimit_leak);
} else if (!strcasecmp(command, "refclock")) {
parse_refclock(p);
} else if (!strcasecmp(command, "reselectdist")) {
parse_double(p, &reselect_distance);
} else if (!strcasecmp(command, "rtcautotrim")) {
parse_double(p, &rtc_autotrim_threshold);
} else if (!strcasecmp(command, "rtcdevice")) {
parse_string(p, &rtc_device);
} else if (!strcasecmp(command, "rtcfile")) {
parse_string(p, &rtc_file);
} else if (!strcasecmp(command, "rtconutc")) {
rtc_on_utc = parse_null(p);
} else if (!strcasecmp(command, "rtcsync")) {
rtc_sync = parse_null(p);
} else if (!strcasecmp(command, "sched_priority")) {
parse_int(p, &sched_priority);
} else if (!strcasecmp(command, "server")) {
parse_source(p, command, 1);
} else if (!strcasecmp(command, "smoothtime")) {
parse_smoothtime(p);
} else if (!strcasecmp(command, "sourcedir")) {
parse_sourcedir(p);
} else if (!strcasecmp(command, "stratumweight")) {
parse_double(p, &stratum_weight);
} else if (!strcasecmp(command, "tempcomp")) {
parse_tempcomp(p);
} else if (!strcasecmp(command, "user")) {
parse_string(p, &user);
} else if (!strcasecmp(command, "commandkey") ||
!strcasecmp(command, "generatecommandkey") ||
!strcasecmp(command, "linux_freq_scale") ||
!strcasecmp(command, "linux_hz")) {
LOG(LOGS_WARN, "%s directive is no longer supported", command);
} else {
other_parse_error("Invalid directive");
}
processed_file = processed_command = NULL;
}
/* ================================================== */
static int
parse_string(char *line, char **result)
{
check_number_of_args(line, 1);
Free(*result);
*result = Strdup(line);
return 1;
}
/* ================================================== */
static int
parse_int(char *line, int *result)
{
check_number_of_args(line, 1);
if (sscanf(line, "%d", result) != 1) {
command_parse_error();
return 0;
}
return 1;
}
/* ================================================== */
static int
parse_double(char *line, double *result)
{
check_number_of_args(line, 1);
if (sscanf(line, "%lf", result) != 1) {
command_parse_error();
return 0;
}
return 1;
}
/* ================================================== */
static int
parse_null(char *line)
{
check_number_of_args(line, 0);
return 1;
}
/* ================================================== */
static void
parse_source(char *line, char *type, int fatal)
{
NTP_Source source;
if (strcasecmp(type, "peer") == 0) {
source.type = NTP_PEER;
source.pool = 0;
} else if (strcasecmp(type, "pool") == 0) {
source.type = NTP_SERVER;
source.pool = 1;
} else if (strcasecmp(type, "server") == 0) {
source.type = NTP_SERVER;
source.pool = 0;
} else {
if (fatal)
command_parse_error();
return;
}
/* Avoid comparing uninitialized data in compare_sources() */
memset(&source.params, 0, sizeof (source.params));
if (!CPS_ParseNTPSourceAdd(line, &source.params)) {
if (fatal)
command_parse_error();
return;
}
source.params.name = Strdup(source.params.name);
ARR_AppendElement(ntp_sources, &source);
}
/* ================================================== */
static void
parse_sourcedir(char *line)
{
char *s;
s = Strdup(line);
ARR_AppendElement(ntp_source_dirs, &s);
}
/* ================================================== */
static void
parse_ratelimit(char *line, int *enabled, int *interval, int *burst, int *leak)
{
int n, val;
char *opt;
*enabled = 1;
while (*line) {
opt = line;
line = CPS_SplitWord(line);
if (sscanf(line, "%d%n", &val, &n) != 1) {
command_parse_error();
return;
}
line += n;
if (!strcasecmp(opt, "interval"))
*interval = val;
else if (!strcasecmp(opt, "burst"))
*burst = val;
else if (!strcasecmp(opt, "leak"))
*leak = val;
else
command_parse_error();
}
}
/* ================================================== */
static void
parse_refclock(char *line)
{
int n, poll, dpoll, filter_length, pps_rate, min_samples, max_samples, sel_options;
int max_lock_age, pps_forced, stratum, tai;
uint32_t ref_id, lock_ref_id;
double offset, delay, precision, max_dispersion, pulse_width;
char *p, *cmd, *name, *param;
unsigned char ref[5];
RefclockParameters *refclock;
poll = 4;
dpoll = 0;
filter_length = 64;
pps_forced = 0;
pps_rate = 0;
min_samples = SRC_DEFAULT_MINSAMPLES;
max_samples = SRC_DEFAULT_MAXSAMPLES;
sel_options = 0;
offset = 0.0;
delay = 1e-9;
precision = 0.0;
max_dispersion = 0.0;
pulse_width = 0.0;
ref_id = 0;
max_lock_age = 2;
lock_ref_id = 0;
stratum = 0;
tai = 0;
if (!*line) {
command_parse_error();
return;
}
p = line;
line = CPS_SplitWord(line);
if (!*line) {
command_parse_error();
return;
}
name = Strdup(p);
p = line;
line = CPS_SplitWord(line);
param = Strdup(p);
for (cmd = line; *cmd; line += n, cmd = line) {
line = CPS_SplitWord(line);
if (!strcasecmp(cmd, "refid")) {
if (sscanf(line, "%4s%n", (char *)ref, &n) != 1)
break;
ref_id = (uint32_t)ref[0] << 24 | ref[1] << 16 | ref[2] << 8 | ref[3];
} else if (!strcasecmp(cmd, "lock")) {
if (sscanf(line, "%4s%n", (char *)ref, &n) != 1)
break;
lock_ref_id = (uint32_t)ref[0] << 24 | ref[1] << 16 | ref[2] << 8 | ref[3];
} else if (!strcasecmp(cmd, "poll")) {
if (sscanf(line, "%d%n", &poll, &n) != 1) {
break;
}
} else if (!strcasecmp(cmd, "dpoll")) {
if (sscanf(line, "%d%n", &dpoll, &n) != 1) {
break;
}
} else if (!strcasecmp(cmd, "filter")) {
if (sscanf(line, "%d%n", &filter_length, &n) != 1) {
break;
}
} else if (!strcasecmp(cmd, "rate")) {
if (sscanf(line, "%d%n", &pps_rate, &n) != 1)
break;
} else if (!strcasecmp(cmd, "minsamples")) {
if (sscanf(line, "%d%n", &min_samples, &n) != 1)
break;
} else if (!strcasecmp(cmd, "maxlockage")) {
if (sscanf(line, "%d%n", &max_lock_age, &n) != 1)
break;
} else if (!strcasecmp(cmd, "maxsamples")) {
if (sscanf(line, "%d%n", &max_samples, &n) != 1)
break;
} else if (!strcasecmp(cmd, "offset")) {
if (sscanf(line, "%lf%n", &offset, &n) != 1)
break;
} else if (!strcasecmp(cmd, "delay")) {
if (sscanf(line, "%lf%n", &delay, &n) != 1)
break;
} else if (!strcasecmp(cmd, "pps")) {
n = 0;
pps_forced = 1;
} else if (!strcasecmp(cmd, "precision")) {
if (sscanf(line, "%lf%n", &precision, &n) != 1)
break;
} else if (!strcasecmp(cmd, "maxdispersion")) {
if (sscanf(line, "%lf%n", &max_dispersion, &n) != 1)
break;
} else if (!strcasecmp(cmd, "stratum")) {
if (sscanf(line, "%d%n", &stratum, &n) != 1 ||
stratum >= NTP_MAX_STRATUM || stratum < 0)
break;
} else if (!strcasecmp(cmd, "tai")) {
n = 0;
tai = 1;
} else if (!strcasecmp(cmd, "width")) {
if (sscanf(line, "%lf%n", &pulse_width, &n) != 1)
break;
} else if (!strcasecmp(cmd, "noselect")) {
n = 0;
sel_options |= SRC_SELECT_NOSELECT;
} else if (!strcasecmp(cmd, "prefer")) {
n = 0;
sel_options |= SRC_SELECT_PREFER;
} else if (!strcasecmp(cmd, "trust")) {
n = 0;
sel_options |= SRC_SELECT_TRUST;
} else if (!strcasecmp(cmd, "require")) {
n = 0;
sel_options |= SRC_SELECT_REQUIRE;
} else {
other_parse_error("Invalid refclock option");
return;
}
}
if (*cmd) {
command_parse_error();
return;
}
refclock = (RefclockParameters *)ARR_GetNewElement(refclock_sources);
refclock->driver_name = name;
refclock->driver_parameter = param;
refclock->driver_poll = dpoll;
refclock->poll = poll;
refclock->filter_length = filter_length;
refclock->pps_forced = pps_forced;
refclock->pps_rate = pps_rate;
refclock->min_samples = min_samples;
refclock->max_samples = max_samples;
refclock->sel_options = sel_options;
refclock->stratum = stratum;
refclock->tai = tai;
refclock->offset = offset;