/
cmdmon.c
1698 lines (1414 loc) · 51.5 KB
/
cmdmon.c
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/*
chronyd/chronyc - Programs for keeping computer clocks accurate.
**********************************************************************
* Copyright (C) Richard P. Curnow 1997-2003
* Copyright (C) Miroslav Lichvar 2009-2016
*
* 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.
*
**********************************************************************
=======================================================================
Command and monitoring module in the main program
*/
#include "config.h"
#include "sysincl.h"
#include "cmdmon.h"
#include "candm.h"
#include "sched.h"
#include "util.h"
#include "logging.h"
#include "keys.h"
#include "ntp_sources.h"
#include "ntp_core.h"
#include "smooth.h"
#include "sources.h"
#include "sourcestats.h"
#include "reference.h"
#include "manual.h"
#include "memory.h"
#include "local.h"
#include "addrfilt.h"
#include "conf.h"
#include "rtc.h"
#include "pktlength.h"
#include "clientlog.h"
#include "refclock.h"
/* ================================================== */
union sockaddr_all {
struct sockaddr_in in4;
#ifdef FEAT_IPV6
struct sockaddr_in6 in6;
#endif
struct sockaddr_un un;
struct sockaddr sa;
};
/* File descriptors for command and monitoring sockets */
static int sock_fdu;
static int sock_fd4;
#ifdef FEAT_IPV6
static int sock_fd6;
#endif
/* Flag indicating whether this module has been initialised or not */
static int initialised = 0;
/* ================================================== */
/* Array of permission levels for command types */
static const char permissions[] = {
PERMIT_OPEN, /* NULL */
PERMIT_AUTH, /* ONLINE */
PERMIT_AUTH, /* OFFLINE */
PERMIT_AUTH, /* BURST */
PERMIT_AUTH, /* MODIFY_MINPOLL */
PERMIT_AUTH, /* MODIFY_MAXPOLL */
PERMIT_AUTH, /* DUMP */
PERMIT_AUTH, /* MODIFY_MAXDELAY */
PERMIT_AUTH, /* MODIFY_MAXDELAYRATIO */
PERMIT_AUTH, /* MODIFY_MAXUPDATESKEW */
PERMIT_OPEN, /* LOGON */
PERMIT_AUTH, /* SETTIME */
PERMIT_AUTH, /* LOCAL */
PERMIT_AUTH, /* MANUAL */
PERMIT_OPEN, /* N_SOURCES */
PERMIT_OPEN, /* SOURCE_DATA */
PERMIT_AUTH, /* REKEY */
PERMIT_AUTH, /* ALLOW */
PERMIT_AUTH, /* ALLOWALL */
PERMIT_AUTH, /* DENY */
PERMIT_AUTH, /* DENYALL */
PERMIT_AUTH, /* CMDALLOW */
PERMIT_AUTH, /* CMDALLOWALL */
PERMIT_AUTH, /* CMDDENY */
PERMIT_AUTH, /* CMDDENYALL */
PERMIT_AUTH, /* ACCHECK */
PERMIT_AUTH, /* CMDACCHECK */
PERMIT_AUTH, /* ADD_SERVER */
PERMIT_AUTH, /* ADD_PEER */
PERMIT_AUTH, /* DEL_SOURCE */
PERMIT_AUTH, /* WRITERTC */
PERMIT_AUTH, /* DFREQ */
PERMIT_AUTH, /* DOFFSET */
PERMIT_OPEN, /* TRACKING */
PERMIT_OPEN, /* SOURCESTATS */
PERMIT_OPEN, /* RTCREPORT */
PERMIT_AUTH, /* TRIMRTC */
PERMIT_AUTH, /* CYCLELOGS */
PERMIT_AUTH, /* SUBNETS_ACCESSED */
PERMIT_AUTH, /* CLIENT_ACCESSES (by subnet) */
PERMIT_AUTH, /* CLIENT_ACCESSES_BY_INDEX */
PERMIT_OPEN, /* MANUAL_LIST */
PERMIT_AUTH, /* MANUAL_DELETE */
PERMIT_AUTH, /* MAKESTEP */
PERMIT_OPEN, /* ACTIVITY */
PERMIT_AUTH, /* MODIFY_MINSTRATUM */
PERMIT_AUTH, /* MODIFY_POLLTARGET */
PERMIT_AUTH, /* MODIFY_MAXDELAYDEVRATIO */
PERMIT_AUTH, /* RESELECT */
PERMIT_AUTH, /* RESELECTDISTANCE */
PERMIT_AUTH, /* MODIFY_MAKESTEP */
PERMIT_OPEN, /* SMOOTHING */
PERMIT_AUTH, /* SMOOTHTIME */
PERMIT_AUTH, /* REFRESH */
PERMIT_AUTH, /* SERVER_STATS */
PERMIT_AUTH, /* CLIENT_ACCESSES_BY_INDEX2 */
PERMIT_AUTH, /* LOCAL2 */
PERMIT_AUTH, /* NTP_DATA */
PERMIT_AUTH, /* ADD_SERVER2 */
PERMIT_AUTH, /* ADD_PEER2 */
PERMIT_AUTH, /* ADD_SERVER3 */
PERMIT_AUTH, /* ADD_PEER3 */
};
/* ================================================== */
/* This authorisation table is used for checking whether particular
machines are allowed to make command and monitoring requests. */
static ADF_AuthTable access_auth_table;
/* ================================================== */
/* Forward prototypes */
static void read_from_cmd_socket(int sock_fd, int event, void *anything);
/* ================================================== */
static int
prepare_socket(int family, int port_number)
{
int sock_fd;
socklen_t my_addr_len;
union sockaddr_all my_addr;
IPAddr bind_address;
int on_off = 1;
sock_fd = socket(family, SOCK_DGRAM, 0);
if (sock_fd < 0) {
LOG(LOGS_ERR, "Could not open %s command socket : %s",
UTI_SockaddrFamilyToString(family), strerror(errno));
return -1;
}
/* Close on exec */
UTI_FdSetCloexec(sock_fd);
if (family != AF_UNIX) {
/* Allow reuse of port number */
if (setsockopt(sock_fd, SOL_SOCKET, SO_REUSEADDR, (char *) &on_off, sizeof(on_off)) < 0) {
LOG(LOGS_ERR, "Could not set reuseaddr socket options");
/* Don't quit - we might survive anyway */
}
#ifdef IP_FREEBIND
/* Allow binding to address that doesn't exist yet */
if (setsockopt(sock_fd, IPPROTO_IP, IP_FREEBIND, (char *)&on_off, sizeof(on_off)) < 0) {
LOG(LOGS_ERR, "Could not set free bind socket option");
}
#endif
#ifdef FEAT_IPV6
if (family == AF_INET6) {
#ifdef IPV6_V6ONLY
/* Receive IPv6 packets only */
if (setsockopt(sock_fd, IPPROTO_IPV6, IPV6_V6ONLY, (char *)&on_off, sizeof(on_off)) < 0) {
LOG(LOGS_ERR, "Could not request IPV6_V6ONLY socket option");
}
#endif
}
#endif
}
memset(&my_addr, 0, sizeof (my_addr));
switch (family) {
case AF_INET:
my_addr_len = sizeof (my_addr.in4);
my_addr.in4.sin_family = family;
my_addr.in4.sin_port = htons((unsigned short)port_number);
CNF_GetBindCommandAddress(IPADDR_INET4, &bind_address);
if (bind_address.family == IPADDR_INET4)
my_addr.in4.sin_addr.s_addr = htonl(bind_address.addr.in4);
else
my_addr.in4.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
break;
#ifdef FEAT_IPV6
case AF_INET6:
my_addr_len = sizeof (my_addr.in6);
my_addr.in6.sin6_family = family;
my_addr.in6.sin6_port = htons((unsigned short)port_number);
CNF_GetBindCommandAddress(IPADDR_INET6, &bind_address);
if (bind_address.family == IPADDR_INET6)
memcpy(my_addr.in6.sin6_addr.s6_addr, bind_address.addr.in6,
sizeof (my_addr.in6.sin6_addr.s6_addr));
else
my_addr.in6.sin6_addr = in6addr_loopback;
break;
#endif
case AF_UNIX:
my_addr_len = sizeof (my_addr.un);
my_addr.un.sun_family = family;
if (snprintf(my_addr.un.sun_path, sizeof (my_addr.un.sun_path), "%s",
CNF_GetBindCommandPath()) >= sizeof (my_addr.un.sun_path))
LOG_FATAL("Unix socket path too long");
unlink(my_addr.un.sun_path);
break;
default:
assert(0);
}
if (bind(sock_fd, &my_addr.sa, my_addr_len) < 0) {
LOG(LOGS_ERR, "Could not bind %s command socket : %s",
UTI_SockaddrFamilyToString(family), strerror(errno));
close(sock_fd);
return -1;
}
/* Register handler for read events on the socket */
SCH_AddFileHandler(sock_fd, SCH_FILE_INPUT, read_from_cmd_socket, NULL);
return sock_fd;
}
/* ================================================== */
static void
do_size_checks(void)
{
int i, request_length, padding_length, reply_length;
CMD_Request request;
CMD_Reply reply;
assert(offsetof(CMD_Request, data) == 20);
assert(offsetof(CMD_Reply, data) == 28);
for (i = 0; i < N_REQUEST_TYPES; i++) {
request.version = PROTO_VERSION_NUMBER;
request.command = htons(i);
request_length = PKL_CommandLength(&request);
padding_length = PKL_CommandPaddingLength(&request);
if (padding_length > MAX_PADDING_LENGTH || padding_length > request_length ||
request_length > sizeof (CMD_Request) ||
(request_length && request_length < offsetof(CMD_Request, data)))
assert(0);
}
for (i = 1; i < N_REPLY_TYPES; i++) {
reply.reply = htons(i);
reply.status = STT_SUCCESS;
reply.data.manual_list.n_samples = htonl(MAX_MANUAL_LIST_SAMPLES);
reply_length = PKL_ReplyLength(&reply);
if ((reply_length && reply_length < offsetof(CMD_Reply, data)) ||
reply_length > sizeof (CMD_Reply))
assert(0);
}
}
/* ================================================== */
void
CAM_Initialise(int family)
{
int port_number;
assert(!initialised);
assert(sizeof (permissions) / sizeof (permissions[0]) == N_REQUEST_TYPES);
do_size_checks();
initialised = 1;
sock_fdu = -1;
port_number = CNF_GetCommandPort();
if (port_number && (family == IPADDR_UNSPEC || family == IPADDR_INET4))
sock_fd4 = prepare_socket(AF_INET, port_number);
else
sock_fd4 = -1;
#ifdef FEAT_IPV6
if (port_number && (family == IPADDR_UNSPEC || family == IPADDR_INET6))
sock_fd6 = prepare_socket(AF_INET6, port_number);
else
sock_fd6 = -1;
#endif
if (port_number && sock_fd4 < 0
#ifdef FEAT_IPV6
&& sock_fd6 < 0
#endif
) {
LOG_FATAL("Could not open any command socket");
}
access_auth_table = ADF_CreateTable();
}
/* ================================================== */
void
CAM_Finalise(void)
{
if (sock_fdu >= 0) {
SCH_RemoveFileHandler(sock_fdu);
close(sock_fdu);
unlink(CNF_GetBindCommandPath());
}
sock_fdu = -1;
if (sock_fd4 >= 0) {
SCH_RemoveFileHandler(sock_fd4);
close(sock_fd4);
}
sock_fd4 = -1;
#ifdef FEAT_IPV6
if (sock_fd6 >= 0) {
SCH_RemoveFileHandler(sock_fd6);
close(sock_fd6);
}
sock_fd6 = -1;
#endif
ADF_DestroyTable(access_auth_table);
initialised = 0;
}
/* ================================================== */
void
CAM_OpenUnixSocket(void)
{
/* This is separated from CAM_Initialise() as it needs to be called when
the process has already dropped the root privileges */
if (CNF_GetBindCommandPath()[0])
sock_fdu = prepare_socket(AF_UNIX, 0);
}
/* ================================================== */
static void
transmit_reply(CMD_Reply *msg, union sockaddr_all *where_to)
{
int status;
int tx_message_length;
int sock_fd;
socklen_t addrlen;
switch (where_to->sa.sa_family) {
case AF_INET:
sock_fd = sock_fd4;
addrlen = sizeof (where_to->in4);
break;
#ifdef FEAT_IPV6
case AF_INET6:
sock_fd = sock_fd6;
addrlen = sizeof (where_to->in6);
break;
#endif
case AF_UNIX:
sock_fd = sock_fdu;
addrlen = sizeof (where_to->un);
break;
default:
assert(0);
}
tx_message_length = PKL_ReplyLength(msg);
status = sendto(sock_fd, (void *) msg, tx_message_length, 0,
&where_to->sa, addrlen);
if (status < 0) {
DEBUG_LOG("Could not send to %s fd %d : %s",
UTI_SockaddrToString(&where_to->sa), sock_fd, strerror(errno));
return;
}
DEBUG_LOG("Sent %d bytes to %s fd %d", status,
UTI_SockaddrToString(&where_to->sa), sock_fd);
}
/* ================================================== */
static void
handle_dump(CMD_Request *rx_message, CMD_Reply *tx_message)
{
SRC_DumpSources();
}
/* ================================================== */
static void
handle_online(CMD_Request *rx_message, CMD_Reply *tx_message)
{
IPAddr address, mask;
UTI_IPNetworkToHost(&rx_message->data.online.mask, &mask);
UTI_IPNetworkToHost(&rx_message->data.online.address, &address);
if (!NSR_TakeSourcesOnline(&mask, &address))
tx_message->status = htons(STT_NOSUCHSOURCE);
}
/* ================================================== */
static void
handle_offline(CMD_Request *rx_message, CMD_Reply *tx_message)
{
IPAddr address, mask;
UTI_IPNetworkToHost(&rx_message->data.offline.mask, &mask);
UTI_IPNetworkToHost(&rx_message->data.offline.address, &address);
if (!NSR_TakeSourcesOffline(&mask, &address))
tx_message->status = htons(STT_NOSUCHSOURCE);
}
/* ================================================== */
static void
handle_burst(CMD_Request *rx_message, CMD_Reply *tx_message)
{
IPAddr address, mask;
UTI_IPNetworkToHost(&rx_message->data.burst.mask, &mask);
UTI_IPNetworkToHost(&rx_message->data.burst.address, &address);
if (!NSR_InitiateSampleBurst(ntohl(rx_message->data.burst.n_good_samples),
ntohl(rx_message->data.burst.n_total_samples),
&mask, &address))
tx_message->status = htons(STT_NOSUCHSOURCE);
}
/* ================================================== */
static void
handle_modify_minpoll(CMD_Request *rx_message, CMD_Reply *tx_message)
{
IPAddr address;
UTI_IPNetworkToHost(&rx_message->data.modify_minpoll.address, &address);
if (!NSR_ModifyMinpoll(&address,
ntohl(rx_message->data.modify_minpoll.new_minpoll)))
tx_message->status = htons(STT_NOSUCHSOURCE);
}
/* ================================================== */
static void
handle_modify_maxpoll(CMD_Request *rx_message, CMD_Reply *tx_message)
{
IPAddr address;
UTI_IPNetworkToHost(&rx_message->data.modify_minpoll.address, &address);
if (!NSR_ModifyMaxpoll(&address,
ntohl(rx_message->data.modify_minpoll.new_minpoll)))
tx_message->status = htons(STT_NOSUCHSOURCE);
}
/* ================================================== */
static void
handle_modify_maxdelay(CMD_Request *rx_message, CMD_Reply *tx_message)
{
IPAddr address;
UTI_IPNetworkToHost(&rx_message->data.modify_maxdelay.address, &address);
if (!NSR_ModifyMaxdelay(&address,
UTI_FloatNetworkToHost(rx_message->data.modify_maxdelay.new_max_delay)))
tx_message->status = htons(STT_NOSUCHSOURCE);
}
/* ================================================== */
static void
handle_modify_maxdelayratio(CMD_Request *rx_message, CMD_Reply *tx_message)
{
IPAddr address;
UTI_IPNetworkToHost(&rx_message->data.modify_maxdelayratio.address, &address);
if (!NSR_ModifyMaxdelayratio(&address,
UTI_FloatNetworkToHost(rx_message->data.modify_maxdelayratio.new_max_delay_ratio)))
tx_message->status = htons(STT_NOSUCHSOURCE);
}
/* ================================================== */
static void
handle_modify_maxdelaydevratio(CMD_Request *rx_message, CMD_Reply *tx_message)
{
IPAddr address;
UTI_IPNetworkToHost(&rx_message->data.modify_maxdelaydevratio.address, &address);
if (!NSR_ModifyMaxdelaydevratio(&address,
UTI_FloatNetworkToHost(rx_message->data.modify_maxdelaydevratio.new_max_delay_dev_ratio)))
tx_message->status = htons(STT_NOSUCHSOURCE);
}
/* ================================================== */
static void
handle_modify_minstratum(CMD_Request *rx_message, CMD_Reply *tx_message)
{
IPAddr address;
UTI_IPNetworkToHost(&rx_message->data.modify_minpoll.address, &address);
if (!NSR_ModifyMinstratum(&address,
ntohl(rx_message->data.modify_minstratum.new_min_stratum)))
tx_message->status = htons(STT_NOSUCHSOURCE);
}
/* ================================================== */
static void
handle_modify_polltarget(CMD_Request *rx_message, CMD_Reply *tx_message)
{
IPAddr address;
UTI_IPNetworkToHost(&rx_message->data.modify_polltarget.address, &address);
if (!NSR_ModifyPolltarget(&address,
ntohl(rx_message->data.modify_polltarget.new_poll_target)))
tx_message->status = htons(STT_NOSUCHSOURCE);
}
/* ================================================== */
static void
handle_modify_maxupdateskew(CMD_Request *rx_message, CMD_Reply *tx_message)
{
REF_ModifyMaxupdateskew(UTI_FloatNetworkToHost(rx_message->data.modify_maxupdateskew.new_max_update_skew));
}
/* ================================================== */
static void
handle_modify_makestep(CMD_Request *rx_message, CMD_Reply *tx_message)
{
REF_ModifyMakestep(ntohl(rx_message->data.modify_makestep.limit),
UTI_FloatNetworkToHost(rx_message->data.modify_makestep.threshold));
}
/* ================================================== */
static void
handle_settime(CMD_Request *rx_message, CMD_Reply *tx_message)
{
struct timespec ts;
double offset, dfreq_ppm, new_afreq_ppm;
UTI_TimespecNetworkToHost(&rx_message->data.settime.ts, &ts);
if (!MNL_IsEnabled()) {
tx_message->status = htons(STT_NOTENABLED);
} else if (MNL_AcceptTimestamp(&ts, &offset, &dfreq_ppm, &new_afreq_ppm)) {
tx_message->reply = htons(RPY_MANUAL_TIMESTAMP2);
tx_message->data.manual_timestamp.offset = UTI_FloatHostToNetwork(offset);
tx_message->data.manual_timestamp.dfreq_ppm = UTI_FloatHostToNetwork(dfreq_ppm);
tx_message->data.manual_timestamp.new_afreq_ppm = UTI_FloatHostToNetwork(new_afreq_ppm);
} else {
tx_message->status = htons(STT_FAILED);
}
}
/* ================================================== */
static void
handle_local(CMD_Request *rx_message, CMD_Reply *tx_message)
{
if (ntohl(rx_message->data.local.on_off)) {
REF_EnableLocal(ntohl(rx_message->data.local.stratum),
UTI_FloatNetworkToHost(rx_message->data.local.distance),
ntohl(rx_message->data.local.orphan));
} else {
REF_DisableLocal();
}
}
/* ================================================== */
static void
handle_manual(CMD_Request *rx_message, CMD_Reply *tx_message)
{
int option;
option = ntohl(rx_message->data.manual.option);
switch (option) {
case 0:
MNL_Disable();
break;
case 1:
MNL_Enable();
break;
case 2:
MNL_Reset();
break;
default:
tx_message->status = htons(STT_INVALID);
break;
}
}
/* ================================================== */
static void
handle_n_sources(CMD_Request *rx_message, CMD_Reply *tx_message)
{
int n_sources;
n_sources = SRC_ReadNumberOfSources();
tx_message->reply = htons(RPY_N_SOURCES);
tx_message->data.n_sources.n_sources = htonl(n_sources);
}
/* ================================================== */
static void
handle_source_data(CMD_Request *rx_message, CMD_Reply *tx_message)
{
RPT_SourceReport report;
struct timespec now_corr;
/* Get data */
SCH_GetLastEventTime(&now_corr, NULL, NULL);
if (SRC_ReportSource(ntohl(rx_message->data.source_data.index), &report, &now_corr)) {
switch (SRC_GetType(ntohl(rx_message->data.source_data.index))) {
case SRC_NTP:
NSR_ReportSource(&report, &now_corr);
break;
case SRC_REFCLOCK:
RCL_ReportSource(&report, &now_corr);
break;
}
tx_message->reply = htons(RPY_SOURCE_DATA);
UTI_IPHostToNetwork(&report.ip_addr, &tx_message->data.source_data.ip_addr);
tx_message->data.source_data.stratum = htons(report.stratum);
tx_message->data.source_data.poll = htons(report.poll);
switch (report.state) {
case RPT_SYNC:
tx_message->data.source_data.state = htons(RPY_SD_ST_SYNC);
break;
case RPT_UNREACH:
tx_message->data.source_data.state = htons(RPY_SD_ST_UNREACH);
break;
case RPT_FALSETICKER:
tx_message->data.source_data.state = htons(RPY_SD_ST_FALSETICKER);
break;
case RPT_JITTERY:
tx_message->data.source_data.state = htons(RPY_SD_ST_JITTERY);
break;
case RPT_CANDIDATE:
tx_message->data.source_data.state = htons(RPY_SD_ST_CANDIDATE);
break;
case RPT_OUTLIER:
tx_message->data.source_data.state = htons(RPY_SD_ST_OUTLIER);
break;
}
switch (report.mode) {
case RPT_NTP_CLIENT:
tx_message->data.source_data.mode = htons(RPY_SD_MD_CLIENT);
break;
case RPT_NTP_PEER:
tx_message->data.source_data.mode = htons(RPY_SD_MD_PEER);
break;
case RPT_LOCAL_REFERENCE:
tx_message->data.source_data.mode = htons(RPY_SD_MD_REF);
break;
}
tx_message->data.source_data.flags =
htons((report.sel_options & SRC_SELECT_PREFER ? RPY_SD_FLAG_PREFER : 0) |
(report.sel_options & SRC_SELECT_NOSELECT ? RPY_SD_FLAG_NOSELECT : 0) |
(report.sel_options & SRC_SELECT_TRUST ? RPY_SD_FLAG_TRUST : 0) |
(report.sel_options & SRC_SELECT_REQUIRE ? RPY_SD_FLAG_REQUIRE : 0));
tx_message->data.source_data.reachability = htons(report.reachability);
tx_message->data.source_data.since_sample = htonl(report.latest_meas_ago);
tx_message->data.source_data.orig_latest_meas = UTI_FloatHostToNetwork(report.orig_latest_meas);
tx_message->data.source_data.latest_meas = UTI_FloatHostToNetwork(report.latest_meas);
tx_message->data.source_data.latest_meas_err = UTI_FloatHostToNetwork(report.latest_meas_err);
} else {
tx_message->status = htons(STT_NOSUCHSOURCE);
}
}
/* ================================================== */
static void
handle_rekey(CMD_Request *rx_message, CMD_Reply *tx_message)
{
KEY_Reload();
}
/* ================================================== */
static void
handle_allowdeny(CMD_Request *rx_message, CMD_Reply *tx_message, int allow, int all)
{
IPAddr ip;
int subnet_bits;
UTI_IPNetworkToHost(&rx_message->data.allow_deny.ip, &ip);
subnet_bits = ntohl(rx_message->data.allow_deny.subnet_bits);
if (!NCR_AddAccessRestriction(&ip, subnet_bits, allow, all))
tx_message->status = htons(STT_BADSUBNET);
}
/* ================================================== */
static void
handle_cmdallowdeny(CMD_Request *rx_message, CMD_Reply *tx_message, int allow, int all)
{
IPAddr ip;
int subnet_bits;
UTI_IPNetworkToHost(&rx_message->data.allow_deny.ip, &ip);
subnet_bits = ntohl(rx_message->data.allow_deny.subnet_bits);
if (!CAM_AddAccessRestriction(&ip, subnet_bits, allow, all))
tx_message->status = htons(STT_BADSUBNET);
}
/* ================================================== */
static void
handle_accheck(CMD_Request *rx_message, CMD_Reply *tx_message)
{
IPAddr ip;
UTI_IPNetworkToHost(&rx_message->data.ac_check.ip, &ip);
if (NCR_CheckAccessRestriction(&ip)) {
tx_message->status = htons(STT_ACCESSALLOWED);
} else {
tx_message->status = htons(STT_ACCESSDENIED);
}
}
/* ================================================== */
static void
handle_cmdaccheck(CMD_Request *rx_message, CMD_Reply *tx_message)
{
IPAddr ip;
UTI_IPNetworkToHost(&rx_message->data.ac_check.ip, &ip);
if (CAM_CheckAccessRestriction(&ip)) {
tx_message->status = htons(STT_ACCESSALLOWED);
} else {
tx_message->status = htons(STT_ACCESSDENIED);
}
}
/* ================================================== */
static void
handle_add_source(NTP_Source_Type type, CMD_Request *rx_message, CMD_Reply *tx_message)
{
NTP_Remote_Address rem_addr;
SourceParameters params;
NSR_Status status;
UTI_IPNetworkToHost(&rx_message->data.ntp_source.ip_addr, &rem_addr.ip_addr);
rem_addr.port = (unsigned short)(ntohl(rx_message->data.ntp_source.port));
params.minpoll = ntohl(rx_message->data.ntp_source.minpoll);
params.maxpoll = ntohl(rx_message->data.ntp_source.maxpoll);
params.presend_minpoll = ntohl(rx_message->data.ntp_source.presend_minpoll);
params.min_stratum = ntohl(rx_message->data.ntp_source.min_stratum);
params.poll_target = ntohl(rx_message->data.ntp_source.poll_target);
params.version = ntohl(rx_message->data.ntp_source.version);
params.max_sources = ntohl(rx_message->data.ntp_source.max_sources);
params.min_samples = ntohl(rx_message->data.ntp_source.min_samples);
params.max_samples = ntohl(rx_message->data.ntp_source.max_samples);
params.authkey = ntohl(rx_message->data.ntp_source.authkey);
params.max_delay = UTI_FloatNetworkToHost(rx_message->data.ntp_source.max_delay);
params.max_delay_ratio =
UTI_FloatNetworkToHost(rx_message->data.ntp_source.max_delay_ratio);
params.max_delay_dev_ratio =
UTI_FloatNetworkToHost(rx_message->data.ntp_source.max_delay_dev_ratio);
params.min_delay = UTI_FloatNetworkToHost(rx_message->data.ntp_source.min_delay);
params.asymmetry = UTI_FloatNetworkToHost(rx_message->data.ntp_source.asymmetry);
params.offset = UTI_FloatNetworkToHost(rx_message->data.ntp_source.offset);
params.online = ntohl(rx_message->data.ntp_source.flags) & REQ_ADDSRC_ONLINE ? 1 : 0;
params.auto_offline = ntohl(rx_message->data.ntp_source.flags) & REQ_ADDSRC_AUTOOFFLINE ? 1 : 0;
params.iburst = ntohl(rx_message->data.ntp_source.flags) & REQ_ADDSRC_IBURST ? 1 : 0;
params.interleaved = ntohl(rx_message->data.ntp_source.flags) & REQ_ADDSRC_INTERLEAVED ? 1 : 0;
params.sel_options =
(ntohl(rx_message->data.ntp_source.flags) & REQ_ADDSRC_PREFER ? SRC_SELECT_PREFER : 0) |
(ntohl(rx_message->data.ntp_source.flags) & REQ_ADDSRC_NOSELECT ? SRC_SELECT_NOSELECT : 0) |
(ntohl(rx_message->data.ntp_source.flags) & REQ_ADDSRC_TRUST ? SRC_SELECT_TRUST : 0) |
(ntohl(rx_message->data.ntp_source.flags) & REQ_ADDSRC_REQUIRE ? SRC_SELECT_REQUIRE : 0);
status = NSR_AddSource(&rem_addr, type, ¶ms);
switch (status) {
case NSR_Success:
break;
case NSR_AlreadyInUse:
tx_message->status = htons(STT_SOURCEALREADYKNOWN);
break;
case NSR_TooManySources:
tx_message->status = htons(STT_TOOMANYSOURCES);
break;
case NSR_InvalidAF:
tx_message->status = htons(STT_INVALIDAF);
break;
case NSR_NoSuchSource:
assert(0);
break;
}
}
/* ================================================== */
static void
handle_del_source(CMD_Request *rx_message, CMD_Reply *tx_message)
{
NTP_Remote_Address rem_addr;
NSR_Status status;
UTI_IPNetworkToHost(&rx_message->data.del_source.ip_addr, &rem_addr.ip_addr);
rem_addr.port = 0;
status = NSR_RemoveSource(&rem_addr);
switch (status) {
case NSR_Success:
break;
case NSR_NoSuchSource:
tx_message->status = htons(STT_NOSUCHSOURCE);
break;
case NSR_TooManySources:
case NSR_AlreadyInUse:
case NSR_InvalidAF:
assert(0);
break;
}
}
/* ================================================== */
static void
handle_writertc(CMD_Request *rx_message, CMD_Reply *tx_message)
{
switch (RTC_WriteParameters()) {
case RTC_ST_OK:
break;
case RTC_ST_NODRV:
tx_message->status = htons(STT_NORTC);
break;
case RTC_ST_BADFILE:
tx_message->status = htons(STT_BADRTCFILE);
break;
}
}
/* ================================================== */
static void
handle_dfreq(CMD_Request *rx_message, CMD_Reply *tx_message)
{
double dfreq;
dfreq = UTI_FloatNetworkToHost(rx_message->data.dfreq.dfreq);
LCL_AccumulateDeltaFrequency(dfreq * 1.0e-6);
LOG(LOGS_INFO, "Accumulated delta freq of %.3fppm", dfreq);
}
/* ================================================== */
static void
handle_doffset(CMD_Request *rx_message, CMD_Reply *tx_message)
{
long sec, usec;
double doffset;
sec = (int32_t)ntohl(rx_message->data.doffset.sec);
usec = (int32_t)ntohl(rx_message->data.doffset.usec);
doffset = (double) sec + 1.0e-6 * (double) usec;
LOG(LOGS_INFO, "Accumulated delta offset of %.6f seconds", doffset);
LCL_AccumulateOffset(doffset, 0.0);
}
/* ================================================== */
static void
handle_tracking(CMD_Request *rx_message, CMD_Reply *tx_message)
{
RPT_TrackingReport rpt;
REF_GetTrackingReport(&rpt);
tx_message->reply = htons(RPY_TRACKING);
tx_message->data.tracking.ref_id = htonl(rpt.ref_id);
UTI_IPHostToNetwork(&rpt.ip_addr, &tx_message->data.tracking.ip_addr);
tx_message->data.tracking.stratum = htons(rpt.stratum);
tx_message->data.tracking.leap_status = htons(rpt.leap_status);
UTI_TimespecHostToNetwork(&rpt.ref_time, &tx_message->data.tracking.ref_time);
tx_message->data.tracking.current_correction = UTI_FloatHostToNetwork(rpt.current_correction);
tx_message->data.tracking.last_offset = UTI_FloatHostToNetwork(rpt.last_offset);
tx_message->data.tracking.rms_offset = UTI_FloatHostToNetwork(rpt.rms_offset);
tx_message->data.tracking.freq_ppm = UTI_FloatHostToNetwork(rpt.freq_ppm);
tx_message->data.tracking.resid_freq_ppm = UTI_FloatHostToNetwork(rpt.resid_freq_ppm);
tx_message->data.tracking.skew_ppm = UTI_FloatHostToNetwork(rpt.skew_ppm);
tx_message->data.tracking.root_delay = UTI_FloatHostToNetwork(rpt.root_delay);
tx_message->data.tracking.root_dispersion = UTI_FloatHostToNetwork(rpt.root_dispersion);
tx_message->data.tracking.last_update_interval = UTI_FloatHostToNetwork(rpt.last_update_interval);
}
/* ================================================== */
static void
handle_smoothing(CMD_Request *rx_message, CMD_Reply *tx_message)
{
RPT_SmoothingReport report;
struct timespec now;
SCH_GetLastEventTime(&now, NULL, NULL);
if (!SMT_GetSmoothingReport(&report, &now)) {
tx_message->status = htons(STT_NOTENABLED);
return;
}
tx_message->reply = htons(RPY_SMOOTHING);
tx_message->data.smoothing.flags = htonl((report.active ? RPY_SMT_FLAG_ACTIVE : 0) |
(report.leap_only ? RPY_SMT_FLAG_LEAPONLY : 0));
tx_message->data.smoothing.offset = UTI_FloatHostToNetwork(report.offset);
tx_message->data.smoothing.freq_ppm = UTI_FloatHostToNetwork(report.freq_ppm);
tx_message->data.smoothing.wander_ppm = UTI_FloatHostToNetwork(report.wander_ppm);
tx_message->data.smoothing.last_update_ago = UTI_FloatHostToNetwork(report.last_update_ago);
tx_message->data.smoothing.remaining_time = UTI_FloatHostToNetwork(report.remaining_time);
}
/* ================================================== */
static void
handle_smoothtime(CMD_Request *rx_message, CMD_Reply *tx_message)
{
struct timespec now;
int option;
if (!SMT_IsEnabled()) {
tx_message->status = htons(STT_NOTENABLED);
return;
}
option = ntohl(rx_message->data.smoothtime.option);
SCH_GetLastEventTime(&now, NULL, NULL);
switch (option) {
case REQ_SMOOTHTIME_RESET:
SMT_Reset(&now);
break;
case REQ_SMOOTHTIME_ACTIVATE:
SMT_Activate(&now);
break;
default:
tx_message->status = htons(STT_INVALID);
break;
}
}
/* ================================================== */
static void
handle_sourcestats(CMD_Request *rx_message, CMD_Reply *tx_message)
{
int status;
RPT_SourcestatsReport report;
struct timespec now_corr;
SCH_GetLastEventTime(&now_corr, NULL, NULL);
status = SRC_ReportSourcestats(ntohl(rx_message->data.sourcestats.index),
&report, &now_corr);
if (status) {
tx_message->reply = htons(RPY_SOURCESTATS);
tx_message->data.sourcestats.ref_id = htonl(report.ref_id);
UTI_IPHostToNetwork(&report.ip_addr, &tx_message->data.sourcestats.ip_addr);
tx_message->data.sourcestats.n_samples = htonl(report.n_samples);
tx_message->data.sourcestats.n_runs = htonl(report.n_runs);
tx_message->data.sourcestats.span_seconds = htonl(report.span_seconds);
tx_message->data.sourcestats.resid_freq_ppm = UTI_FloatHostToNetwork(report.resid_freq_ppm);
tx_message->data.sourcestats.skew_ppm = UTI_FloatHostToNetwork(report.skew_ppm);
tx_message->data.sourcestats.sd = UTI_FloatHostToNetwork(report.sd);
tx_message->data.sourcestats.est_offset = UTI_FloatHostToNetwork(report.est_offset);
tx_message->data.sourcestats.est_offset_err = UTI_FloatHostToNetwork(report.est_offset_err);