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Diffstat (limited to '')
| -rw-r--r-- | conf.c | 2594 |
1 files changed, 2594 insertions, 0 deletions
@@ -0,0 +1,2594 @@ +/* + 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_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 char *nts_server_cert_file = NULL; +static char *nts_server_key_file = NULL; +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 char *nts_trusted_cert_file = NULL; + +/* 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)); + + 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); + } + + 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); + + 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); + Free(nts_server_cert_file); + Free(nts_server_key_file); + Free(nts_trusted_cert_file); +} + +/* ================================================== */ + +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, "ntstrustedcerts")) { + parse_string(p, &nts_trusted_cert_file); + } 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_string(p, &nts_server_cert_file); + } else if (!strcasecmp(command, "ntsserverkey")) { + parse_string(p, &nts_server_key_file); + } 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; + refclock->delay = delay; + refclock->precision = precision; + refclock->max_dispersion = max_dispersion; + refclock->pulse_width = pulse_width; + refclock->ref_id = ref_id; + refclock->max_lock_age = max_lock_age; + refclock->lock_ref_id = lock_ref_id; +} + +/* ================================================== */ + +static void +parse_log(char *line) +{ + char *log_name; + do { + log_name = line; + line = CPS_SplitWord(line); + if (*log_name) { + if (!strcmp(log_name, "rawmeasurements")) { + do_log_measurements = 1; + raw_measurements = 1; + } else if (!strcmp(log_name, "measurements")) { + do_log_measurements = 1; + } else if (!strcmp(log_name, "statistics")) { + do_log_statistics = 1; + } else if (!strcmp(log_name, "tracking")) { + do_log_tracking = 1; + } else if (!strcmp(log_name, "rtc")) { + do_log_rtc = 1; + } else if (!strcmp(log_name, "refclocks")) { + do_log_refclocks = 1; + } else if (!strcmp(log_name, "tempcomp")) { + do_log_tempcomp = 1; + } else { + other_parse_error("Invalid log parameter"); + break; + } + } else { + break; + } + } while (1); +} + +/* ================================================== */ + +static void +parse_local(char *line) +{ + if (!CPS_ParseLocal(line, &local_stratum, &local_orphan, &local_distance)) + command_parse_error(); + enable_local = 1; +} + +/* ================================================== */ + +static void +parse_initstepslew(char *line) +{ + char *p, *hostname; + IPAddr ip_addr; + + /* Ignore the line if chronyd was started with -R. */ + if (restarted) { + return; + } + + ARR_SetSize(init_sources, 0); + p = CPS_SplitWord(line); + + if (sscanf(line, "%lf", &init_slew_threshold) != 1) { + command_parse_error(); + return; + } + + while (*p) { + hostname = p; + p = CPS_SplitWord(p); + if (*hostname) { + if (DNS_Name2IPAddress(hostname, &ip_addr, 1) == DNS_Success) { + ARR_AppendElement(init_sources, &ip_addr); + } else { + LOG(LOGS_WARN, "Could not resolve address of initstepslew server %s", hostname); + } + } + } +} + +/* ================================================== */ + +static void +parse_leapsecmode(char *line) +{ + if (!strcasecmp(line, "system")) + leapsec_mode = REF_LeapModeSystem; + else if (!strcasecmp(line, "slew")) + leapsec_mode = REF_LeapModeSlew; + else if (!strcasecmp(line, "step")) + leapsec_mode = REF_LeapModeStep; + else if (!strcasecmp(line, "ignore")) + leapsec_mode = REF_LeapModeIgnore; + else + command_parse_error(); +} + +/* ================================================== */ + +static void +parse_clientloglimit(char *line) +{ + check_number_of_args(line, 1); + if (sscanf(line, "%lu", &client_log_limit) != 1) { + command_parse_error(); + } +} + +/* ================================================== */ + +static void +parse_fallbackdrift(char *line) +{ + check_number_of_args(line, 2); + if (sscanf(line, "%d %d", &fb_drift_min, &fb_drift_max) != 2) { + command_parse_error(); + } +} + +/* ================================================== */ + +static void +parse_makestep(char *line) +{ + check_number_of_args(line, 2); + if (sscanf(line, "%lf %d", &make_step_threshold, &make_step_limit) != 2) { + make_step_limit = 0; + command_parse_error(); + } + + /* Disable limited makestep if chronyd was started with -R. */ + if (restarted && make_step_limit > 0) { + make_step_limit = 0; + } +} + +/* ================================================== */ + +static void +parse_maxchange(char *line) +{ + check_number_of_args(line, 3); + if (sscanf(line, "%lf %d %d", &max_offset, &max_offset_delay, &max_offset_ignore) != 3) { + max_offset_delay = -1; + command_parse_error(); + } +} + +/* ================================================== */ + +static void +parse_mailonchange(char *line) +{ + char *address; + check_number_of_args(line, 2); + address = line; + line = CPS_SplitWord(line); + Free(mail_user_on_change); + if (sscanf(line, "%lf", &mail_change_threshold) == 1) { + mail_user_on_change = Strdup(address); + } else { + mail_user_on_change = NULL; + command_parse_error(); + } +} + +/* ================================================== */ + +static void +parse_allow_deny(char *line, ARR_Instance restrictions, int allow) +{ + char *p; + unsigned long a, b, c, d, n; + int all = 0; + AllowDeny *new_node = NULL; + IPAddr ip_addr; + + p = line; + + if (!strncmp(p, "all", 3)) { + all = 1; + p = CPS_SplitWord(line); + } + + if (!*p) { + /* Empty line applies to all addresses */ + new_node = (AllowDeny *)ARR_GetNewElement(restrictions); + new_node->allow = allow; + new_node->all = all; + new_node->ip.family = IPADDR_UNSPEC; + new_node->subnet_bits = 0; + } else { + char *slashpos; + slashpos = strchr(p, '/'); + if (slashpos) *slashpos = 0; + + check_number_of_args(p, 1); + n = 0; + if (UTI_StringToIP(p, &ip_addr) || + (n = sscanf(p, "%lu.%lu.%lu.%lu", &a, &b, &c, &d)) >= 1) { + new_node = (AllowDeny *)ARR_GetNewElement(restrictions); + new_node->allow = allow; + new_node->all = all; + + if (n == 0) { + new_node->ip = ip_addr; + if (ip_addr.family == IPADDR_INET6) + new_node->subnet_bits = 128; + else + new_node->subnet_bits = 32; + } else { + new_node->ip.family = IPADDR_INET4; + + a &= 0xff; + b &= 0xff; + c &= 0xff; + d &= 0xff; + + switch (n) { + case 1: + new_node->ip.addr.in4 = (a<<24); + new_node->subnet_bits = 8; + break; + case 2: + new_node->ip.addr.in4 = (a<<24) | (b<<16); + new_node->subnet_bits = 16; + break; + case 3: + new_node->ip.addr.in4 = (a<<24) | (b<<16) | (c<<8); + new_node->subnet_bits = 24; + break; + case 4: + new_node->ip.addr.in4 = (a<<24) | (b<<16) | (c<<8) | d; + new_node->subnet_bits = 32; + break; + default: + assert(0); + } + } + + if (slashpos) { + int specified_subnet_bits, n; + n = sscanf(slashpos+1, "%d", &specified_subnet_bits); + if (n == 1) { + new_node->subnet_bits = specified_subnet_bits; + } else { + command_parse_error(); + } + } + + } else { + if (!slashpos && DNS_Name2IPAddress(p, &ip_addr, 1) == DNS_Success) { + new_node = (AllowDeny *)ARR_GetNewElement(restrictions); + new_node->allow = allow; + new_node->all = all; + new_node->ip = ip_addr; + if (ip_addr.family == IPADDR_INET6) + new_node->subnet_bits = 128; + else + new_node->subnet_bits = 32; + } else { + command_parse_error(); + } + } + } +} + +/* ================================================== */ + +static void +parse_authselectmode(char *line) +{ + if (!strcasecmp(line, "require")) + authselect_mode = SRC_AUTHSELECT_REQUIRE; + else if (!strcasecmp(line, "prefer")) + authselect_mode = SRC_AUTHSELECT_PREFER; + else if (!strcasecmp(line, "mix")) + authselect_mode = SRC_AUTHSELECT_MIX; + else if (!strcasecmp(line, "ignore")) + authselect_mode = SRC_AUTHSELECT_IGNORE; + else + command_parse_error(); +} + +/* ================================================== */ + +static void +parse_bindacqaddress(char *line) +{ + IPAddr ip; + + check_number_of_args(line, 1); + if (UTI_StringToIP(line, &ip)) { + if (ip.family == IPADDR_INET4) + bind_acq_address4 = ip; + else if (ip.family == IPADDR_INET6) + bind_acq_address6 = ip; + } else { + command_parse_error(); + } +} + +/* ================================================== */ + +static void +parse_bindaddress(char *line) +{ + IPAddr ip; + + check_number_of_args(line, 1); + if (UTI_StringToIP(line, &ip)) { + if (ip.family == IPADDR_INET4) + bind_address4 = ip; + else if (ip.family == IPADDR_INET6) + bind_address6 = ip; + } else { + command_parse_error(); + } +} + +/* ================================================== */ + +static void +parse_bindcmdaddress(char *line) +{ + IPAddr ip; + + check_number_of_args(line, 1); + + /* Address starting with / is for the Unix domain socket */ + if (line[0] == '/') { + parse_string(line, &bind_cmd_path); + /* / disables the socket */ + if (strcmp(bind_cmd_path, "/") == 0) { + Free(bind_cmd_path); + bind_cmd_path = NULL; + } + } else if (UTI_StringToIP(line, &ip)) { + if (ip.family == IPADDR_INET4) + bind_cmd_address4 = ip; + else if (ip.family == IPADDR_INET6) + bind_cmd_address6 = ip; + } else { + command_parse_error(); + } +} + +/* ================================================== */ + +static void +parse_broadcast(char *line) +{ + /* Syntax : broadcast <interval> <broadcast-IP-addr> [<port>] */ + NTP_Broadcast_Destination *destination; + int port; + int interval; + char *p; + IPAddr ip; + + p = line; + line = CPS_SplitWord(line); + + if (sscanf(p, "%d", &interval) != 1) { + command_parse_error(); + return; + } + + p = line; + line = CPS_SplitWord(line); + + if (!UTI_StringToIP(p, &ip)) { + command_parse_error(); + return; + } + + p = line; + line = CPS_SplitWord(line); + + if (*p) { + if (sscanf(p, "%d", &port) != 1 || *line) { + command_parse_error(); + return; + } + } else { + /* default port */ + port = NTP_PORT; + } + + destination = (NTP_Broadcast_Destination *)ARR_GetNewElement(broadcasts); + destination->addr.ip_addr = ip; + destination->addr.port = port; + destination->interval = interval; +} + +/* ================================================== */ + +static void +parse_smoothtime(char *line) +{ + if (get_number_of_args(line) != 3) + check_number_of_args(line, 2); + + if (sscanf(line, "%lf %lf", &smooth_max_freq, &smooth_max_wander) != 2) { + smooth_max_freq = 0.0; + command_parse_error(); + } + + line = CPS_SplitWord(CPS_SplitWord(line)); + smooth_leap_only = 0; + + if (*line) { + if (!strcasecmp(line, "leaponly")) + smooth_leap_only = 1; + else + command_parse_error(); + } +} + +/* ================================================== */ +static void +parse_tempcomp(char *line) +{ + char *p; + int point_form; + + point_form = get_number_of_args(line) == 3; + + if (!point_form) + check_number_of_args(line, 6); + + p = line; + line = CPS_SplitWord(line); + + if (!*p) { + command_parse_error(); + return; + } + + Free(tempcomp_point_file); + + if (point_form) { + if (sscanf(line, "%lf", &tempcomp_interval) != 1) { + command_parse_error(); + return; + } + tempcomp_point_file = Strdup(CPS_SplitWord(line)); + } else { + if (sscanf(line, "%lf %lf %lf %lf %lf", &tempcomp_interval, + &tempcomp_T0, &tempcomp_k0, &tempcomp_k1, &tempcomp_k2) != 5) { + command_parse_error(); + return; + } + tempcomp_point_file = NULL; + } + + Free(tempcomp_sensor_file); + tempcomp_sensor_file = Strdup(p); +} + +/* ================================================== */ + +static void +parse_hwtimestamp(char *line) +{ + CNF_HwTsInterface *iface; + char *p, filter[5]; + int n; + + if (!*line) { + command_parse_error(); + return; + } + + p = line; + line = CPS_SplitWord(line); + + iface = ARR_GetNewElement(hwts_interfaces); + iface->name = Strdup(p); + iface->minpoll = 0; + iface->min_samples = 2; + iface->max_samples = 16; + iface->nocrossts = 0; + iface->rxfilter = CNF_HWTS_RXFILTER_ANY; + iface->precision = 100.0e-9; + iface->tx_comp = 0.0; + iface->rx_comp = 0.0; + + for (p = line; *p; line += n, p = line) { + line = CPS_SplitWord(line); + + if (!strcasecmp(p, "maxsamples")) { + if (sscanf(line, "%d%n", &iface->max_samples, &n) != 1) + break; + } else if (!strcasecmp(p, "minpoll")) { + if (sscanf(line, "%d%n", &iface->minpoll, &n) != 1) + break; + } else if (!strcasecmp(p, "minsamples")) { + if (sscanf(line, "%d%n", &iface->min_samples, &n) != 1) + break; + } else if (!strcasecmp(p, "precision")) { + if (sscanf(line, "%lf%n", &iface->precision, &n) != 1) + break; + } else if (!strcasecmp(p, "rxcomp")) { + if (sscanf(line, "%lf%n", &iface->rx_comp, &n) != 1) + break; + } else if (!strcasecmp(p, "txcomp")) { + if (sscanf(line, "%lf%n", &iface->tx_comp, &n) != 1) + break; + } else if (!strcasecmp(p, "rxfilter")) { + if (sscanf(line, "%4s%n", filter, &n) != 1) + break; + if (!strcasecmp(filter, "none")) + iface->rxfilter = CNF_HWTS_RXFILTER_NONE; + else if (!strcasecmp(filter, "ntp")) + iface->rxfilter = CNF_HWTS_RXFILTER_NTP; + else if (!strcasecmp(filter, "all")) + iface->rxfilter = CNF_HWTS_RXFILTER_ALL; + else + break; + } else if (!strcasecmp(p, "nocrossts")) { + n = 0; + iface->nocrossts = 1; + } else { + break; + } + } + + if (*p) + command_parse_error(); +} + +/* ================================================== */ + +static const char * +get_basename(const char *path) +{ + const char *b = strrchr(path, '/'); + return b ? b + 1 : path; +} + +/* ================================================== */ + +static int +compare_basenames(const void *a, const void *b) +{ + return strcmp(get_basename(*(const char * const *)a), + get_basename(*(const char * const *)b)); +} + +/* ================================================== */ + +static int +search_dirs(char *line, const char *suffix, void (*file_handler)(const char *path)) +{ + char *dirs[MAX_CONF_DIRS], buf[MAX_LINE_LENGTH], *path; + size_t i, j, k, locations, n_dirs; + glob_t gl; + + n_dirs = UTI_SplitString(line, dirs, MAX_CONF_DIRS); + if (n_dirs < 1 || n_dirs > MAX_CONF_DIRS) + return 0; + + /* Get the paths of all config files in the specified directories */ + for (i = 0; i < n_dirs; i++) { + if (snprintf(buf, sizeof (buf), "%s/*%s", dirs[i], suffix) >= sizeof (buf)) + assert(0); + if (glob(buf, GLOB_NOSORT | (i > 0 ? GLOB_APPEND : 0), NULL, &gl) != 0) + ; + } + + if (gl.gl_pathc > 0) { + /* Sort the paths by filenames */ + qsort(gl.gl_pathv, gl.gl_pathc, sizeof (gl.gl_pathv[0]), compare_basenames); + + for (i = 0; i < gl.gl_pathc; i += locations) { + /* Count directories containing files with this name */ + for (j = i + 1, locations = 1; j < gl.gl_pathc; j++, locations++) { + if (compare_basenames(&gl.gl_pathv[i], &gl.gl_pathv[j]) != 0) + break; + } + + /* Read the first file of this name in the order of the directive */ + for (j = 0; j < n_dirs; j++) { + for (k = 0; k < locations; k++) { + path = gl.gl_pathv[i + k]; + if (strncmp(path, dirs[j], strlen(dirs[j])) == 0 && + strlen(dirs[j]) + 1 + strlen(get_basename(path)) == strlen(path)) { + file_handler(path); + break; + } + } + if (k < locations) + break; + } + } + } + + globfree(&gl); + + return 1; +} + +/* ================================================== */ + +static void +parse_confdir(char *line) +{ + if (!search_dirs(line, ".conf", CNF_ReadFile)) + command_parse_error(); +} + +/* ================================================== */ + +static void +parse_include(char *line) +{ + glob_t gl; + size_t i; + int r; + + check_number_of_args(line, 1); + + if ((r = glob(line, +#ifdef GLOB_NOMAGIC + GLOB_NOMAGIC | +#endif + GLOB_ERR, NULL, &gl)) != 0) { + if (r != GLOB_NOMATCH) + LOG_FATAL("Could not search for files matching %s", line); + + DEBUG_LOG("glob of %s failed", line); + return; + } + + for (i = 0; i < gl.gl_pathc; i++) + CNF_ReadFile(gl.gl_pathv[i]); + + globfree(&gl); +} + +/* ================================================== */ + +static void +load_source_file(const char *filename) +{ + char line[MAX_LINE_LENGTH + 1]; + FILE *f; + + f = UTI_OpenFile(NULL, filename, NULL, 'r', 0); + if (!f) + return; + + while (fgets(line, sizeof (line), f)) { + if (strlen(line) >= MAX_LINE_LENGTH) + continue; + + CPS_NormalizeLine(line); + if (line[0] == '\0') + continue; + + parse_source(CPS_SplitWord(line), line, 0); + } + + fclose(f); +} + +/* ================================================== */ + +static int +compare_sources(const void *a, const void *b) +{ + const NTP_Source *sa = a, *sb = b; + int d; + + if (!sa->params.name) + return -1; + if (!sb->params.name) + return 1; + if ((d = strcmp(sa->params.name, sb->params.name)) != 0) + return d; + if ((d = (int)(sa->type) - (int)(sb->type)) != 0) + return d; + if ((d = sa->pool - sb->pool) != 0) + return d; + if ((d = sa->params.port - sb->params.port) != 0) + return d; + return memcmp(&sa->params.params, &sb->params.params, sizeof (sa->params.params)); +} + +/* ================================================== */ + +static void +reload_source_dirs(void) +{ + NTP_Source *prev_sources, *new_sources, *source; + unsigned int i, j, prev_size, new_size, unresolved; + uint32_t *prev_ids, *new_ids; + char buf[MAX_LINE_LENGTH]; + NSR_Status s; + int d; + + prev_size = ARR_GetSize(ntp_source_ids); + if (prev_size > 0 && ARR_GetSize(ntp_sources) != prev_size) + assert(0); + + /* Save the current sources and their configuration IDs */ + prev_ids = MallocArray(uint32_t, prev_size); + memcpy(prev_ids, ARR_GetElements(ntp_source_ids), prev_size * sizeof (prev_ids[0])); + prev_sources = MallocArray(NTP_Source, prev_size); + memcpy(prev_sources, ARR_GetElements(ntp_sources), prev_size * sizeof (prev_sources[0])); + + /* Load the sources again */ + ARR_SetSize(ntp_sources, 0); + for (i = 0; i < ARR_GetSize(ntp_source_dirs); i++) { + if (snprintf(buf, sizeof (buf), "%s", + *(char **)ARR_GetElement(ntp_source_dirs, i)) >= sizeof (buf)) + assert(0); + search_dirs(buf, ".sources", load_source_file); + } + + /* Add new and remove existing sources according to the new configuration. + Avoid removing and adding the same source again to keep its state. */ + + new_size = ARR_GetSize(ntp_sources); + new_sources = ARR_GetElements(ntp_sources); + ARR_SetSize(ntp_source_ids, new_size); + new_ids = ARR_GetElements(ntp_source_ids); + unresolved = 0; + + qsort(new_sources, new_size, sizeof (new_sources[0]), compare_sources); + + for (i = j = 0; i < prev_size || j < new_size; ) { + if (i < prev_size && j < new_size) + d = compare_sources(&prev_sources[i], &new_sources[j]); + else + d = i < prev_size ? -1 : 1; + + if (d < 0) { + /* Remove the missing source */ + if (prev_sources[i].params.name[0] != '\0') + NSR_RemoveSourcesById(prev_ids[i]); + i++; + } else if (d > 0) { + /* Add a newly configured source */ + source = &new_sources[j]; + s = NSR_AddSourceByName(source->params.name, source->params.port, source->pool, + source->type, &source->params.params, &new_ids[j]); + + if (s == NSR_UnresolvedName) { + unresolved++; + } else if (s != NSR_Success) { + /* Mark the source as not present */ + source->params.name[0] = '\0'; + } + j++; + } else { + /* Keep the existing source */ + new_ids[j] = prev_ids[i]; + i++, j++; + } + } + + for (i = 0; i < prev_size; i++) + Free(prev_sources[i].params.name); + Free(prev_sources); + Free(prev_ids); + + if (unresolved > 0) + NSR_ResolveSources(); +} + +/* ================================================== */ + +void +CNF_CreateDirs(uid_t uid, gid_t gid) +{ + char *dir; + + /* Create a directory for the Unix domain command socket */ + if (bind_cmd_path) { + dir = UTI_PathToDir(bind_cmd_path); + UTI_CreateDirAndParents(dir, 0770, uid, gid); + + /* Check the permissions and owner/group in case the directory already + existed. It MUST NOT be accessible by others as permissions on Unix + domain sockets are ignored on some systems (e.g. Solaris). */ + if (!UTI_CheckDirPermissions(dir, 0770, uid, gid)) { + LOG(LOGS_WARN, "Disabled command socket %s", bind_cmd_path); + Free(bind_cmd_path); + bind_cmd_path = NULL; + } + + Free(dir); + } + + if (logdir) + UTI_CreateDirAndParents(logdir, 0750, uid, gid); + if (dumpdir) + UTI_CreateDirAndParents(dumpdir, 0750, uid, gid); + if (nts_dump_dir) + UTI_CreateDirAndParents(nts_dump_dir, 0750, uid, gid); +} + +/* ================================================== */ + +void +CNF_AddInitSources(void) +{ + CPS_NTP_Source cps_source; + NTP_Remote_Address ntp_addr; + char dummy_hostname[2] = "H"; + unsigned int i; + + for (i = 0; i < ARR_GetSize(init_sources); i++) { + /* Get the default NTP params */ + CPS_ParseNTPSourceAdd(dummy_hostname, &cps_source); + + /* Add the address as a server specified with the iburst option */ + ntp_addr.ip_addr = *(IPAddr *)ARR_GetElement(init_sources, i); + ntp_addr.port = cps_source.port; + cps_source.params.iburst = 1; + + NSR_AddSource(&ntp_addr, NTP_SERVER, &cps_source.params, NULL); + } + + ARR_SetSize(init_sources, 0); +} + +/* ================================================== */ + +void +CNF_AddSources(void) +{ + NTP_Source *source; + unsigned int i; + + for (i = 0; i < ARR_GetSize(ntp_sources); i++) { + source = (NTP_Source *)ARR_GetElement(ntp_sources, i); + NSR_AddSourceByName(source->params.name, source->params.port, + source->pool, source->type, &source->params.params, NULL); + Free(source->params.name); + } + + ARR_SetSize(ntp_sources, 0); + + reload_source_dirs(); +} + +/* ================================================== */ + +void +CNF_AddRefclocks(void) +{ + RefclockParameters *refclock; + unsigned int i; + + for (i = 0; i < ARR_GetSize(refclock_sources); i++) { + refclock = ARR_GetElement(refclock_sources, i); + RCL_AddRefclock(refclock); + Free(refclock->driver_name); + Free(refclock->driver_parameter); + } + + ARR_SetSize(refclock_sources, 0); +} + +/* ================================================== */ + +void +CNF_AddBroadcasts(void) +{ + unsigned int i; + NTP_Broadcast_Destination *destination; + + for (i = 0; i < ARR_GetSize(broadcasts); i++) { + destination = (NTP_Broadcast_Destination *)ARR_GetElement(broadcasts, i); + NCR_AddBroadcastDestination(&destination->addr, destination->interval); + } + + ARR_SetSize(broadcasts, 0); +} + +/* ================================================== */ + +void +CNF_ReloadSources(void) +{ + reload_source_dirs(); +} + +/* ================================================== */ + +int +CNF_GetNTPPort(void) +{ + return ntp_port; +} + +/* ================================================== */ + +int +CNF_GetAcquisitionPort(void) +{ + return acquisition_port; +} + +/* ================================================== */ + +char * +CNF_GetDriftFile(void) +{ + return drift_file; +} + +/* ================================================== */ + +int +CNF_GetLogBanner(void) +{ + return log_banner; +} + +/* ================================================== */ + +char * +CNF_GetLogDir(void) +{ + return logdir; +} + +/* ================================================== */ + +char * +CNF_GetDumpDir(void) +{ + return dumpdir; +} + +/* ================================================== */ + +int +CNF_GetLogMeasurements(int *raw) +{ + *raw = raw_measurements; + return do_log_measurements; +} + +/* ================================================== */ + +int +CNF_GetLogStatistics(void) +{ + return do_log_statistics; +} + +/* ================================================== */ + +int +CNF_GetLogTracking(void) +{ + return do_log_tracking; +} + +/* ================================================== */ + +int +CNF_GetLogRtc(void) +{ + return do_log_rtc; +} + +/* ================================================== */ + +int +CNF_GetLogRefclocks(void) +{ + return do_log_refclocks; +} + +/* ================================================== */ + +int +CNF_GetLogTempComp(void) +{ + return do_log_tempcomp; +} + +/* ================================================== */ + +char * +CNF_GetKeysFile(void) +{ + return keys_file; +} + +/* ================================================== */ + +double +CNF_GetRtcAutotrim(void) +{ + return rtc_autotrim_threshold; +} + +/* ================================================== */ + +char * +CNF_GetRtcFile(void) +{ + return rtc_file; +} + +/* ================================================== */ + +char * +CNF_GetRtcDevice(void) +{ + return rtc_device; +} + +/* ================================================== */ + +double +CNF_GetMaxUpdateSkew(void) +{ + return max_update_skew; +} + +/* ================================================== */ + +double +CNF_GetMaxDrift(void) +{ + return max_drift; +} + +/* ================================================== */ + +double +CNF_GetMaxClockError(void) +{ + return max_clock_error; +} + +/* ================================================== */ + +double +CNF_GetCorrectionTimeRatio(void) +{ + return correction_time_ratio; +} + +/* ================================================== */ + +SRC_AuthSelectMode +CNF_GetAuthSelectMode(void) +{ + return authselect_mode; +} + +/* ================================================== */ + +double +CNF_GetMaxSlewRate(void) +{ + return max_slew_rate; +} + +/* ================================================== */ + +double +CNF_GetClockPrecision(void) +{ + return clock_precision; +} + +/* ================================================== */ + +double +CNF_GetMaxDistance(void) +{ + return max_distance; +} + +/* ================================================== */ + +double +CNF_GetMaxJitter(void) +{ + return max_jitter; +} + +/* ================================================== */ + +double +CNF_GetReselectDistance(void) +{ + return reselect_distance; +} + +/* ================================================== */ + +double +CNF_GetStratumWeight(void) +{ + return stratum_weight; +} + +/* ================================================== */ + +double +CNF_GetCombineLimit(void) +{ + return combine_limit; +} + +/* ================================================== */ + +int +CNF_GetManualEnabled(void) +{ + return enable_manual; +} + +/* ================================================== */ + +int +CNF_GetCommandPort(void) { + return cmd_port; +} + +/* ================================================== */ + +int +CNF_AllowLocalReference(int *stratum, int *orphan, double *distance) +{ + if (enable_local) { + *stratum = local_stratum; + *orphan = local_orphan; + *distance = local_distance; + return 1; + } else { + return 0; + } +} + +/* ================================================== */ + +int +CNF_GetRtcOnUtc(void) +{ + return rtc_on_utc; +} + +/* ================================================== */ + +int +CNF_GetRtcSync(void) +{ + return rtc_sync; +} + +/* ================================================== */ + +void +CNF_GetMakeStep(int *limit, double *threshold) +{ + *limit = make_step_limit; + *threshold = make_step_threshold; +} + +/* ================================================== */ + +void +CNF_GetMaxChange(int *delay, int *ignore, double *offset) +{ + *delay = max_offset_delay; + *ignore = max_offset_ignore; + *offset = max_offset; +} + +/* ================================================== */ + +double +CNF_GetLogChange(void) +{ + return log_change_threshold; +} + +/* ================================================== */ + +void +CNF_GetMailOnChange(int *enabled, double *threshold, char **user) +{ + if (mail_user_on_change) { + *enabled = 1; + *threshold = mail_change_threshold; + *user = mail_user_on_change; + } else { + *enabled = 0; + *threshold = 0.0; + *user = NULL; + } +} + +/* ================================================== */ + +void +CNF_SetupAccessRestrictions(void) +{ + AllowDeny *node; + int status; + unsigned int i; + + for (i = 0; i < ARR_GetSize(ntp_restrictions); i++) { + node = ARR_GetElement(ntp_restrictions, i); + status = NCR_AddAccessRestriction(&node->ip, node->subnet_bits, node->allow, node->all); + if (!status) { + LOG_FATAL("Bad subnet in %s/%d", UTI_IPToString(&node->ip), node->subnet_bits); + } + } + + for (i = 0; i < ARR_GetSize(cmd_restrictions); i++) { + node = ARR_GetElement(cmd_restrictions, i); + status = CAM_AddAccessRestriction(&node->ip, node->subnet_bits, node->allow, node->all); + if (!status) { + LOG_FATAL("Bad subnet in %s/%d", UTI_IPToString(&node->ip), node->subnet_bits); + } + } + + ARR_SetSize(ntp_restrictions, 0); + ARR_SetSize(cmd_restrictions, 0); +} + +/* ================================================== */ + +int +CNF_GetNoClientLog(void) +{ + return no_client_log; +} + +/* ================================================== */ + +unsigned long +CNF_GetClientLogLimit(void) +{ + return client_log_limit; +} + +/* ================================================== */ + +void +CNF_GetFallbackDrifts(int *min, int *max) +{ + *min = fb_drift_min; + *max = fb_drift_max; +} + +/* ================================================== */ + +void +CNF_GetBindAddress(int family, IPAddr *addr) +{ + if (family == IPADDR_INET4) + *addr = bind_address4; + else if (family == IPADDR_INET6) + *addr = bind_address6; + else + addr->family = IPADDR_UNSPEC; +} + +/* ================================================== */ + +void +CNF_GetBindAcquisitionAddress(int family, IPAddr *addr) +{ + if (family == IPADDR_INET4) + *addr = bind_acq_address4; + else if (family == IPADDR_INET6) + *addr = bind_acq_address6; + else + addr->family = IPADDR_UNSPEC; +} + +/* ================================================== */ + +char * +CNF_GetBindNtpInterface(void) +{ + return bind_ntp_iface; +} + +/* ================================================== */ + +char * +CNF_GetBindAcquisitionInterface(void) +{ + return bind_acq_iface; +} + +/* ================================================== */ + +char * +CNF_GetBindCommandInterface(void) +{ + return bind_cmd_iface; +} + +/* ================================================== */ + +char * +CNF_GetBindCommandPath(void) +{ + return bind_cmd_path; +} + +/* ================================================== */ + +void +CNF_GetBindCommandAddress(int family, IPAddr *addr) +{ + if (family == IPADDR_INET4) + *addr = bind_cmd_address4; + else if (family == IPADDR_INET6) + *addr = bind_cmd_address6; + else + addr->family = IPADDR_UNSPEC; +} + +/* ================================================== */ + +int +CNF_GetNtpDscp(void) +{ + return ntp_dscp; +} + +/* ================================================== */ + +char * +CNF_GetNtpSigndSocket(void) +{ + return ntp_signd_socket; +} + +/* ================================================== */ + +char * +CNF_GetPidFile(void) +{ + return pidfile; +} + +/* ================================================== */ + +REF_LeapMode +CNF_GetLeapSecMode(void) +{ + return leapsec_mode; +} + +/* ================================================== */ + +char * +CNF_GetLeapSecTimezone(void) +{ + return leapsec_tz; +} + +/* ================================================== */ + +int +CNF_GetSchedPriority(void) +{ + return sched_priority; +} + +/* ================================================== */ + +int +CNF_GetLockMemory(void) +{ + return lock_memory; +} + +/* ================================================== */ + +int CNF_GetNTPRateLimit(int *interval, int *burst, int *leak) +{ + *interval = ntp_ratelimit_interval; + *burst = ntp_ratelimit_burst; + *leak = ntp_ratelimit_leak; + return ntp_ratelimit_enabled; +} + +/* ================================================== */ + +int CNF_GetNtsRateLimit(int *interval, int *burst, int *leak) +{ + *interval = nts_ratelimit_interval; + *burst = nts_ratelimit_burst; + *leak = nts_ratelimit_leak; + return nts_ratelimit_enabled; +} + +/* ================================================== */ + +int CNF_GetCommandRateLimit(int *interval, int *burst, int *leak) +{ + *interval = cmd_ratelimit_interval; + *burst = cmd_ratelimit_burst; + *leak = cmd_ratelimit_leak; + return cmd_ratelimit_enabled; +} + +/* ================================================== */ + +void +CNF_GetSmooth(double *max_freq, double *max_wander, int *leap_only) +{ + *max_freq = smooth_max_freq; + *max_wander = smooth_max_wander; + *leap_only = smooth_leap_only; +} + +/* ================================================== */ + +void +CNF_GetTempComp(char **file, double *interval, char **point_file, double *T0, double *k0, double *k1, double *k2) +{ + *file = tempcomp_sensor_file; + *point_file = tempcomp_point_file; + *interval = tempcomp_interval; + *T0 = tempcomp_T0; + *k0 = tempcomp_k0; + *k1 = tempcomp_k1; + *k2 = tempcomp_k2; +} + +/* ================================================== */ + +char * +CNF_GetUser(void) +{ + return user; +} + +/* ================================================== */ + +int +CNF_GetMaxSamples(void) +{ + return max_samples; +} + +/* ================================================== */ + +int +CNF_GetMinSamples(void) +{ + return min_samples; +} + +/* ================================================== */ + +int +CNF_GetMinSources(void) +{ + return min_sources; +} + +/* ================================================== */ + +char * +CNF_GetHwclockFile(void) +{ + return hwclock_file; +} + +/* ================================================== */ + +int +CNF_GetInitSources(void) +{ + return ARR_GetSize(init_sources); +} + +/* ================================================== */ + +double +CNF_GetInitStepThreshold(void) +{ + return init_slew_threshold; +} + +/* ================================================== */ + +int +CNF_GetHwTsInterface(unsigned int index, CNF_HwTsInterface **iface) +{ + if (index >= ARR_GetSize(hwts_interfaces)) + return 0; + + *iface = (CNF_HwTsInterface *)ARR_GetElement(hwts_interfaces, index); + return 1; +} + +/* ================================================== */ + +char * +CNF_GetNtsDumpDir(void) +{ + return nts_dump_dir; +} + +/* ================================================== */ + +char * +CNF_GetNtsNtpServer(void) +{ + return nts_ntp_server; +} + +/* ================================================== */ + +char * +CNF_GetNtsServerCertFile(void) +{ + return nts_server_cert_file; +} + +/* ================================================== */ + +char * +CNF_GetNtsServerKeyFile(void) +{ + return nts_server_key_file; +} + +/* ================================================== */ + +int +CNF_GetNtsServerPort(void) +{ + return nts_server_port; +} + +/* ================================================== */ + +int +CNF_GetNtsServerProcesses(void) +{ + return nts_server_processes; +} + +/* ================================================== */ + +int +CNF_GetNtsServerConnections(void) +{ + return nts_server_connections; +} + +/* ================================================== */ + +int +CNF_GetNtsRefresh(void) +{ + return nts_refresh; +} + +/* ================================================== */ + +int +CNF_GetNtsRotate(void) +{ + return nts_rotate; +} + +/* ================================================== */ + +char * +CNF_GetNtsTrustedCertFile(void) +{ + return nts_trusted_cert_file; +} + +/* ================================================== */ + +int +CNF_GetNoSystemCert(void) +{ + return no_system_cert; +} + +/* ================================================== */ + +int +CNF_GetNoCertTimeCheck(void) +{ + return no_cert_time_check; +} |