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zmeventnotification.pl
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#!/usr/bin/perl -T
#
# ==========================================================================
#
# THIS SCRIPT MUST BE RUN WITH SUDO OR STARTED VIA ZMDC.PL
#
# ZoneMinder Realtime Notification System
#
# A light weight event notification daemon
# Uses shared memory to detect new events (polls SHM)
# Also opens a websocket connection at a configurable port
# so events can be reported
# Any client can connect to this web socket and handle it further
# for example, send it out via APNS/GCM or any other mechanism
#
# This is a much faster and low overhead method compared to zmfilter
# as there is no DB overhead nor SQL searches for event matches
# ~ PP
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
#
# ==========================================================================
use strict;
use bytes;
use POSIX ':sys_wait_h';
use Time::HiRes qw/gettimeofday/;
use Symbol qw(qualify_to_ref);
use IO::Select;
# debugging only.
# use Data::Dumper;
# ==========================================================================
#
# Starting v1.0, configuration has moved to a separate file, please make sure
# you see README
#
# Starting v0.95, I've moved to FCM which means I no longer need to maintain
# my own push server. Plus this uses HTTP which is the new recommended
# way. Note that 0.95 will only work with zmNinja 1.2.510 and beyond
# Conversely, old versions of the event server will NOT work with zmNinja
# 1.2.510 and beyond, so make sure you upgrade both
#
# ==========================================================================
my $app_version = "5.4";
# ==========================================================================
#
# These are app defaults
# Note that you really should not have to to change these values.
# It is better you change them inside the ini file.
# These values are used ONLY if the server cannot find its ini file
# The only one you may want to change is DEFAULT_CONFIG_FILE to point
# to your custom ini file if you don't use --config. The rest should
# go into that config file.
# ==========================================================================
# configuration constants
use constant {
DEFAULT_CONFIG_FILE => "/etc/zm/zmeventnotification.ini",
DEFAULT_PORT => 9000,
DEFAULT_ADDRESS => '[::]',
DEFAULT_AUTH_ENABLE => 'yes',
DEFAULT_AUTH_TIMEOUT => 20,
DEFAULT_FCM_ENABLE => 'yes',
DEFAULT_MQTT_ENABLE => 'no',
DEFAULT_MQTT_SERVER => '127.0.0.1',
DEFAULT_MQTT_CLOSE_ON_SEND => 'no',
DEFAULT_FCM_TOKEN_FILE => '/var/lib/zmeventnotification/push/tokens.txt',
DEFAULT_BASE_DATA_PATH => '/var/lib/zmeventnotification',
DEFAULT_SSL_ENABLE => 'yes',
DEFAULT_CUSTOMIZE_VERBOSE => 'no',
DEFAULT_CUSTOMIZE_EVENT_CHECK_INTERVAL => 5,
DEFAULT_CUSTOMIZE_MONITOR_RELOAD_INTERVAL => 300,
DEFAULT_CUSTOMIZE_READ_ALARM_CAUSE => 'no',
DEFAULT_CUSTOMIZE_TAG_ALARM_EVENT_ID => 'no',
DEFAULT_CUSTOMIZE_USE_CUSTOM_NOTIFICATION_SOUND => 'no',
DEFAULT_CUSTOMIZE_INCLUDE_PICTURE => 'no',
DEFAULT_USE_HOOKS => 'no',
DEFAULT_HOOK_KEEP_FRAME_MATCH_TYPE => 'yes',
DEFAULT_HOOK_USE_HOOK_DESCRIPTION => 'no',
DEFAULT_HOOK_STORE_FRAME_IN_ZM => 'no',
DEFAULT_RESTART_INTERVAL => 7200,
DEFAULT_EVENT_START_NOTIFY_ON_HOOK_FAIL => 'none',
DEFAULT_EVENT_START_NOTIFY_ON_HOOK_SUCCESS => 'none',
DEFAULT_EVENT_END_NOTIFY_ON_HOOK_FAIL => 'none',
DEFAULT_EVENT_END_NOTIFY_ON_HOOK_SUCCESS => 'none',
DEFAULT_EVENT_END_NOTIFY_IF_START_SUCCESS => 'yes',
DEFAULT_SEND_EVENT_END_NOTIFICATION => 'no',
};
# connection state
use constant {
PENDING_AUTH => 1,
VALID_CONNECTION => 2,
INVALID_CONNECTION => 3,
PENDING_DELETE => 4,
};
# connection types
use constant {
FCM => 1000,
MQTT => 1001,
WEB => 1002
};
# child fork states
use constant {
ACTIVE => 100,
EXITED => 101
};
# Declare options.
my $help;
my $config_file;
my $config_file_present;
my $check_config;
my $port;
my $address;
my $auth_enabled;
my $auth_timeout;
my $use_mqtt;
my $mqtt_server;
my $mqtt_username;
my $mqtt_password;
my $mqtt_close_on_send;
my $use_fcm;
my $fcm_api_key;
my $token_file;
my $ssl_enabled;
my $ssl_cert_file;
my $ssl_key_file;
my $console_logs;
my $event_check_interval;
my $monitor_reload_interval;
my $read_alarm_cause;
my $tag_alarm_event_id;
my $use_custom_notification_sound;
my $send_event_end_notification;
my $use_hooks;
my $event_start_hook;
my $event_end_hook;
my $event_start_notify_on_hook_fail;
my $event_start_notify_on_hook_success;
my %event_start_notify_on_hook_fail;
my %event_start_notify_on_hook_success;
my $event_end_notify_on_hook_fail;
my $event_end_notify_on_hook_success;
my %event_end_notify_on_hook_fail;
my %event_end_notify_on_hook_success;
my $event_end_notify_if_start_success;
my $use_hook_description;
my $keep_frame_match_type;
my $skip_monitors;
my $hook_pass_image_path;
my $picture_url;
my $include_picture;
my $picture_portal_username;
my $picture_portal_password;
my $secrets;
my $secrets_filename;
my $base_data_path;
my $restart_interval;
my $prefix = "PARENT:";
#default key. Please don't change this
use constant NINJA_API_KEY =>
"AAAApYcZ0mA:APA91bG71SfBuYIaWHJorjmBQB3cAN7OMT7bAxKuV3ByJ4JiIGumG6cQw0Bo6_fHGaWoo4Bl-SlCdxbivTv5Z-2XPf0m86wsebNIG15pyUHojzmRvJKySNwfAHs7sprTGsA_SIR_H43h";
my $dummyEventTest = 0
; # if on, will generate dummy events. Not in config for a reason. Only dev testing
my $dummyEventInterval = 20; # timespan to generate events in seconds
my $dummyEventTimeLastSent = time();
# This part makes sure we have the right core deps. See later for optional deps
if ( !try_use("Net::WebSocket::Server") ) {
Fatal("Net::WebSocket::Server missing");
}
if ( !try_use("IO::Socket::SSL") ) { Fatal("IO::Socket::SSL missing"); }
if ( !try_use("IO::Handle") ) { Fatal("IO::Handle"); }
if ( !try_use("Config::IniFiles") ) { Fatal("Config::Inifiles missing"); }
if ( !try_use("Getopt::Long") ) { Fatal("Getopt::Long missing"); }
if ( !try_use("File::Basename") ) { Fatal("File::Basename missing"); }
if ( !try_use("File::Spec") ) { Fatal("File::Spec missing"); }
if ( !try_use("URI::Escape") ) { Fatal("URI::Escape missing"); }
#if (!try_use ("threads")) {Fatal ("threads library/support missing");}
use constant USAGE => <<'USAGE';
Usage: zmeventnotification.pl [OPTION]...
--help Print this page.
--config=FILE Read options from configuration file (default: /etc/zm/zmeventnotification.ini).
Any CLI options used below will override config settings.
--check-config Print configuration and exit.
USAGE
GetOptions(
"help" => \$help,
"config=s" => \$config_file,
"check-config" => \$check_config,
);
exit( print(USAGE) ) if $help;
# Read options from a configuration file. If --config is specified, try to
# read it and fail if it can't be read. Otherwise, try the default
# configuration path, and if it doesn't exist, take all the default values by
# loading a blank Config::IniFiles object.
if ( !$config_file ) {
$config_file = DEFAULT_CONFIG_FILE;
$config_file_present = -e $config_file;
}
else {
if ( !-e $config_file ) {
Fatal("$config_file does not exist!");
}
$config_file_present = 1;
}
my $config;
if ($config_file_present) {
printInfo("using config file: $config_file");
$config = Config::IniFiles->new( -file => $config_file );
unless ($config) {
Fatal( "Encountered errors while reading $config_file:\n"
. join( "\n", @Config::IniFiles::errors ) );
}
}
else {
$config = Config::IniFiles->new;
printInfo("No config file found, using inbuilt defaults");
}
$secrets_filename //= config_get_val( $config, "general", "secrets" );
if ($secrets_filename) {
printInfo("using secrets file: $secrets_filename");
$secrets = Config::IniFiles->new( -file => $secrets_filename );
unless ($secrets) {
Fatal( "Encountered errors while reading $secrets_filename:\n"
. join( "\n", @Config::IniFiles::errors ) );
}
}
$restart_interval //= config_get_val( $config, "general", "restart_interval",
DEFAULT_RESTART_INTERVAL );
if ( !$restart_interval ) {
printInfo('ES will not be restarted as interval is specified as 0');
}
else {
printInfo("ES will be restarted at $restart_interval seconds");
}
# If an option set a value, leave it. If there's a value in the config, use
# it. Otherwise, use a default value if it's available.
$base_data_path //= config_get_val( $config, "general", "base_data_path",
DEFAULT_BASE_DATA_PATH );
$port //= config_get_val( $config, "network", "port", DEFAULT_PORT );
$address //= config_get_val( $config, "network", "address", DEFAULT_ADDRESS );
$auth_enabled //=
config_get_val( $config, "auth", "enable", DEFAULT_AUTH_ENABLE );
$auth_timeout //=
config_get_val( $config, "auth", "timeout", DEFAULT_AUTH_TIMEOUT );
$use_mqtt //= config_get_val( $config, "mqtt", "enable", DEFAULT_MQTT_ENABLE );
$mqtt_server //=
config_get_val( $config, "mqtt", "server", DEFAULT_MQTT_SERVER );
$mqtt_username //= config_get_val( $config, "mqtt", "username" );
$mqtt_password //= config_get_val( $config, "mqtt", "password" );
$mqtt_close_on_send //=
config_get_val( $config, "mqtt", "close_on_send",
DEFAULT_MQTT_CLOSE_ON_SEND );
$use_fcm //= config_get_val( $config, "fcm", "enable", DEFAULT_FCM_ENABLE );
$fcm_api_key //= config_get_val( $config, "fcm", "api_key", NINJA_API_KEY );
$token_file //=
config_get_val( $config, "fcm", "token_file", DEFAULT_FCM_TOKEN_FILE );
$ssl_enabled //= config_get_val( $config, "ssl", "enable", DEFAULT_SSL_ENABLE );
$ssl_cert_file //= config_get_val( $config, "ssl", "cert" );
$ssl_key_file //= config_get_val( $config, "ssl", "key" );
$console_logs //= config_get_val( $config, "customize", "console_logs",
DEFAULT_CUSTOMIZE_VERBOSE );
$event_check_interval //=
config_get_val( $config, "customize", "event_check_interval",
DEFAULT_CUSTOMIZE_EVENT_CHECK_INTERVAL );
$monitor_reload_interval //=
config_get_val( $config, "customize", "monitor_reload_interval",
DEFAULT_CUSTOMIZE_MONITOR_RELOAD_INTERVAL );
$read_alarm_cause //= config_get_val( $config, "customize", "read_alarm_cause",
DEFAULT_CUSTOMIZE_READ_ALARM_CAUSE );
$tag_alarm_event_id //=
config_get_val( $config, "customize", "tag_alarm_event_id",
DEFAULT_CUSTOMIZE_TAG_ALARM_EVENT_ID );
$use_custom_notification_sound //= config_get_val(
$config, "customize",
"use_custom_notification_sound",
DEFAULT_CUSTOMIZE_USE_CUSTOM_NOTIFICATION_SOUND
);
$picture_url //= config_get_val( $config, "customize", "picture_url" );
$include_picture //= config_get_val( $config, "customize", "include_picture",
DEFAULT_CUSTOMIZE_INCLUDE_PICTURE );
$picture_portal_username //=
config_get_val( $config, "customize", "picture_portal_username" );
$picture_portal_password //=
config_get_val( $config, "customize", "picture_portal_password" );
$send_event_end_notification //=
config_get_val( $config, "customize", "send_event_end_notification",
DEFAULT_SEND_EVENT_END_NOTIFICATION );
$use_hooks //=
config_get_val( $config, "customize", "use_hooks", DEFAULT_USE_HOOKS );
$event_start_hook //= config_get_val( $config, "hook", "event_start_hook" );
# backward compatibility
$event_start_hook //= config_get_val( $config, "hook", "hook_script" )
if ( !$event_start_hook );
$event_end_hook //= config_get_val( $config, "hook", "event_end_hook" );
$event_start_notify_on_hook_fail //= config_get_val(
$config, "hook",
"event_start_notify_on_hook_fail",
DEFAULT_EVENT_START_NOTIFY_ON_HOOK_FAIL
);
$event_start_notify_on_hook_success //= config_get_val(
$config, "hook",
"event_start_notify_on_hook_success",
DEFAULT_EVENT_START_NOTIFY_ON_HOOK_SUCCESS
);
$event_end_notify_on_hook_fail //= config_get_val(
$config, "hook",
"event_end_notify_on_hook_fail",
DEFAULT_EVENT_END_NOTIFY_ON_HOOK_FAIL
);
$event_end_notify_on_hook_success //= config_get_val(
$config, "hook",
"event_end_notify_on_hook_success",
DEFAULT_EVENT_END_NOTIFY_ON_HOOK_SUCCESS
);
# get channels and convert to hash
%event_start_notify_on_hook_fail = map { $_ => 1 }
split( /\s*,\s*/, lc($event_start_notify_on_hook_fail) );
%event_start_notify_on_hook_success = map { $_ => 1 }
split( /\s*,\s*/, lc($event_start_notify_on_hook_success) );
%event_end_notify_on_hook_fail =
map { $_ => 1 } split( /\s*,\s*/, lc($event_end_notify_on_hook_fail) );
%event_end_notify_on_hook_success = map { $_ => 1 }
split( /\s*,\s*/, lc($event_end_notify_on_hook_success) );
$event_end_notify_if_start_success //= config_get_val(
$config, "hook",
"event_end_notify_if_start_success",
DEFAULT_EVENT_END_NOTIFY_IF_START_SUCCESS
);
$use_hook_description //=
config_get_val( $config, "hook", "use_hook_description",
DEFAULT_HOOK_USE_HOOK_DESCRIPTION );
$keep_frame_match_type //=
config_get_val( $config, "hook", "keep_frame_match_type",
DEFAULT_HOOK_KEEP_FRAME_MATCH_TYPE );
$skip_monitors //= config_get_val( $config, "hook", "skip_monitors" );
$hook_pass_image_path //=
config_get_val( $config, "hook", "hook_pass_image_path" );
my %ssl_push_opts = ();
if ( $ssl_enabled && ( !$ssl_cert_file || !$ssl_key_file ) ) {
Fatal("SSL is enabled, but key or certificate file is missing");
}
my $notId = 1;
if ($hook_pass_image_path) {
if ( !try_use("ZoneMinder::Event") ) {
Fatal(
"ZoneMinder::Event missing, you may be using an old version. Please turn off hook_pass_image_path in yoyr config"
);
}
}
# this is just a wrapper around Config::IniFiles val
# older versions don't support a default parameter
sub config_get_val {
my ( $config, $sect, $parm, $def ) = @_;
my $val = $config->val( $sect, $parm );
my $final_val = defined($val) ? $val : $def;
# compatibility hack, lets use yes/no in config to maintain
# parity with hook config
if ( lc($final_val) eq 'yes' ) { $final_val = 1; }
elsif ( lc($final_val) eq 'no' ) { $final_val = 0; }
my $fc = substr( $final_val, 0, 1 );
#printInfo ("Parsing $final_val with X${fc}X");
if ( $fc eq "!" ) {
my $token = substr( $final_val, 1 );
printDebug( 'Got secret token !' . $token );
Fatal('No secret file found') if ( !$secrets );
my $secret_val = $secrets->val( 'secrets', $token );
Fatal( 'Token:' . $token . ' not found in secret file' )
if ( !$secret_val );
#printInfo ('replacing with:'.$secret_val);
$final_val = $secret_val;
}
# now search for substitutions
my @matches = ( $final_val =~ /\{\{(.*?)\}\}/g );
foreach (@matches) {
my $token = $_;
# check if token exists in either general or its own section
# other-section substitution not supported
my $val = $config->val( 'general', $token );
$val = $config->val( $sect, $token ) if !$val;
printDebug("config string substitution: {{$token}} is '$val'");
$final_val =~ s/\{\{$token\}\}/$val/g;
}
return $final_val;
}
# helper routines to print config status in help
sub yes_or_no {
return $_[0] ? "yes" : "no";
}
sub value_or_undefined {
return $_[0] || "(undefined)";
}
sub present_or_not {
return $_[0] ? "(defined)" : "(undefined)";
}
sub print_config {
my $abs_config_file = File::Spec->rel2abs($config_file);
print(
<<"EOF"
${\(
$config_file_present ?
"Configuration (read $abs_config_file)" :
"Default configuration ($abs_config_file doesn't exist)"
)}:
Secrets file.......................... ${\(value_or_undefined($secrets_filename))}
Base data path.........................${\(value_or_undefined($base_data_path))}
Restart interval (secs)............... ${\(value_or_undefined($restart_interval))}
Port ................................. ${\(value_or_undefined($port))}
Address .............................. ${\(value_or_undefined($address))}
Event check interval ................. ${\(value_or_undefined($event_check_interval))}
Monitor reload interval .............. ${\(value_or_undefined($monitor_reload_interval))}
Auth enabled ......................... ${\(yes_or_no($auth_enabled))}
Auth timeout ......................... ${\(value_or_undefined($auth_timeout))}
Use FCM .............................. ${\(yes_or_no($use_fcm))}
FCM API key .......................... ${\(present_or_not($fcm_api_key))}
Token file ........................... ${\(value_or_undefined($token_file))}
Use MQTT ..............................${\(yes_or_no($use_mqtt))}
MQTT Server ...........................${\(value_or_undefined($mqtt_server))}
MQTT Username .........................${\(value_or_undefined($mqtt_username))}
MQTT Password .........................${\(present_or_not($mqtt_password))}
MQTT Close on send ....................${\(yes_or_no($mqtt_close_on_send))}
SSL enabled .......................... ${\(yes_or_no($ssl_enabled))}
SSL cert file ........................ ${\(value_or_undefined($ssl_cert_file))}
SSL key file ......................... ${\(value_or_undefined($ssl_key_file))}
Verbose .............................. ${\(yes_or_no($console_logs))}
Read alarm cause ..................... ${\(yes_or_no($read_alarm_cause))}
Tag alarm event id ................... ${\(yes_or_no($tag_alarm_event_id))}
Use custom notification sound ........ ${\(yes_or_no($use_custom_notification_sound))}
Send event end notification............${\(yes_or_no($send_event_end_notification))}
Use Hooks............................. ${\(value_or_undefined($use_hooks))}
Hook Script on Event Start ........... ${\(value_or_undefined($event_start_hook))}
Hook Script on Event End.............. ${\(value_or_undefined($event_end_hook))}
Notify on Event Start (hook success).. ${\(value_or_undefined($event_start_notify_on_hook_success))}
Notify on Event Start (hook fail)..... ${\(value_or_undefined($event_start_notify_on_hook_fail))}
Notify on Event End (hook success)... ${\(value_or_undefined($event_end_notify_on_hook_success))}
Notify on Event End (hook fail)...... ${\(value_or_undefined($event_end_notify_on_hook_fail))}
Notify End only if Start success......${\(yes_or_no($event_end_notify_if_start_success))}
Use Hook Description........... ${\(yes_or_no($use_hook_description))}
Keep frame match type.......... ${\(yes_or_no($keep_frame_match_type))}
Skipped monitors............... ${\(value_or_undefined($skip_monitors))}
Store Frame in ZM...............${\(yes_or_no($hook_pass_image_path))}
Picture URL ................... ${\(value_or_undefined($picture_url))}
Include picture................ ${\(yes_or_no($include_picture))}
Picture username .............. ${\(value_or_undefined($picture_portal_username))}
Picture password .............. ${\(present_or_not($picture_portal_password))}
EOF
);
}
exit( print_config() ) if $check_config;
print_config() if $console_logs;
# Lets now load all the optional dependent libraries in a failsafe way
if ( !try_use("JSON") ) {
if ( !try_use("JSON::XS") ) {
Fatal("JSON or JSON::XS missing");
exit(-1);
}
}
# Fetch whatever options are available from CLI arguments.
if ($use_fcm) {
if ( !try_use("LWP::UserAgent")
|| !try_use("URI::URL")
|| !try_use("LWP::Protocol::https") )
{
Fatal(
"FCM push mode needs LWP::Protocol::https, LWP::UserAgent and URI::URL perl packages installed"
);
}
else {
printInfo("Push enabled via FCM");
}
}
else {
printInfo("FCM disabled. Will only send out websocket notifications");
}
if ($use_mqtt) {
if ( !try_use("Net::MQTT::Simple") ) {
Fatal("Net::MQTT::Simple missing");
exit(-1);
}
printInfo("MQTT Enabled");
}
else {
printInfo("MQTT Disabled");
}
# ==========================================================================
#
# Don't change anything below here
#
# ==========================================================================
use ZoneMinder;
use POSIX;
use DBI;
$ENV{PATH} = '/bin:/usr/bin';
$ENV{SHELL} = '/bin/sh' if exists $ENV{SHELL};
delete @ENV{qw(IFS CDPATH ENV BASH_ENV)};
sub Usage {
print("This daemon is not meant to be invoked from command line\n");
exit(-1);
}
sub logrot {
logReinit();
printDebug("log rotate HUP handler processed, logs re-inited");
}
# https://docstore.mik.ua/orelly/perl4/cook/ch07_24.htm
sub sysreadline(*;$) {
my ( $handle, $timeout ) = @_;
$handle = qualify_to_ref( $handle, caller() );
my $infinitely_patient = ( @_ == 1 || $timeout < 0 );
my $start_time = time();
my $selector = IO::Select->new();
$selector->add($handle);
my $line = "";
SLEEP:
until ( at_eol($line) ) {
unless ($infinitely_patient) {
return $line if time() > ( $start_time + $timeout );
}
# sleep only 1 second before checking again
next SLEEP unless $selector->can_read(1.0);
INPUT_READY:
while ( $selector->can_read(0.0) ) {
my $was_blocking = $handle->blocking(0);
CHAR: while ( sysread( $handle, my $nextbyte, 1 ) ) {
$line .= $nextbyte;
last CHAR if $nextbyte eq "\n";
}
$handle->blocking($was_blocking);
# if incomplete line, keep trying
next SLEEP unless at_eol($line);
last INPUT_READY;
}
}
return $line;
}
sub at_eol($) { $_[0] =~ /\n\z/ }
sub REAPER {
# don't mess up return codes for back ticks
local ( $!, $? );
my $pid;
$pid = waitpid( -1, &WNOHANG );
if ( $pid == -1 ) { # no child waiting. Ignore it.
}
elsif ( WIFEXITED($?) ) {
printDebug("REAPER: acknowledged child $pid exiting\n");
}
else {
printDebug("REAPER: False alarm on $pid");
}
$SIG{CHLD} = \&REAPER; # install *after* calling waitpid
}
logInit();
logSetSignal();
$SIG{HUP} = \&logrot;
#$SIG{CHLD} = \&REAPER;
$SIG{CHLD} = "IGNORE";
#$SIG{CHLD} = 'DEFAULT';
my $dbh = zmDbConnect();
my %monitors;
my %active_events = ();
my $monitor_reload_time = 0;
my $es_start_time = time();
my $apns_feedback_time = 0;
my $proxy_reach_time = 0;
my $wss;
my @events = ();
my @active_connections = ();
my @needsReload = ();
my $wss;
my $zmdc_active = 0;
# Main entry point
#
printInfo("You are running version: $app_version");
printDebug( "Started with: perl:" . $^X . " and command:" . $0 );
my $zmdc_status = `zmdc.pl status zmeventnotification.pl`;
if ( index( $zmdc_status, 'running since' ) != -1 ) {
$zmdc_active = 1;
printDebug(
'ES invoked via ZMDC. Will exit when needed and have zmdc restart it');
}
else {
printDebug('ES invoked manually. Will handle restarts ourselves');
}
printWarning(
"WARNING: SSL is disabled, which means all traffic will be unencrypted")
unless $ssl_enabled;
pipe( READER, WRITER ) || die "pipe failed: $!";
WRITER->autoflush(1);
my ( $rin, $rout ) = ('');
vec( $rin, fileno(READER), 1 ) = 1;
printDebug("Parent<--Child pipe ready");
if ($use_fcm) {
my $dir = dirname($token_file);
if ( !-d $dir ) {
printInfo("Creating $dir to store FCM tokens");
mkdir $dir;
}
}
printInfo("Event Notification daemon v $app_version starting\n");
loadPredefinedConnections();
initSocketServer();
printInfo("Event Notification daemon exiting\n");
exit();
# Try to load a perl module
# and if it is not available
# generate a log
sub try_use {
my $module = shift;
eval("use $module");
return ( $@ ? 0 : 1 );
}
# ZM logger print and optionally console print
sub printDebug {
my $str = shift;
my $now = strftime( '%Y-%m-%d,%H:%M:%S', localtime );
$str = $prefix . ' ' . $str;
print( 'CONSOLE DEBUG:', $now, " ", $str, "\n" ) if $console_logs;
Debug($str);
}
sub printInfo {
my $str = shift;
my $now = strftime( '%Y-%m-%d,%H:%M:%S', localtime );
$str = $prefix . ' ' . $str;
print( 'CONSOLE INFO:', $now, " ", $str, "\n" ) if $console_logs;
Info($str);
}
sub printWarning {
my $str = shift;
my $now = strftime( '%Y-%m-%d,%H:%M:%S', localtime );
$str = $prefix . ' ' . $str;
print( 'CONSOLE WARNING:', $now, " ", $str, "\n" ) if $console_logs;
Warning($str);
}
sub printError {
my $str = shift;
my $now = strftime( '%Y-%m-%d,%H:%M:%S', localtime );
$str = $prefix . ' ' . $str;
print( 'CONSOLE ERROR:', $now, " ", $str, "\n" ) if $console_logs;
Error($str);
}
# This function uses shared memory polling to check if
# ZM reported any new events. If it does find events
# then the details are packaged into the events array
# so they can be JSONified and sent out
# Output:
# {Name => Name of monitor, MonitorId => ID of monitor, EventId => Event ID, Cause=> Cause text ofƒ alarm}
# a) List of events in the @events array with the following structure per event:
# b) A CONCATENATED list of events in $alarm_header_display for convenience
# c) A CONCATENATED list of monitor IDs in $alarm_mid
sub checkNewEvents() {
my $eventFound = 0;
my @newEvents = ();
#printDebug("inside checkNewEvents()");
if ( ( time() - $monitor_reload_time ) > $monitor_reload_interval ) {
# this means we have hit the reload monitor timeframe
my $len = scalar @active_connections;
printInfo( "Total event client connections: " . $len . "\n" );
my $ndx = 1;
foreach (@active_connections) {
my $cip = "(none)";
if ( exists $_->{conn} ) {
$cip = $_->{conn}->ip();
}
printDebug( "-->checkNewEvents: Connection $ndx: ID->"
. $_->{id} . " IP->"
. $cip
. " Token->:..."
. substr( $_->{token}, -10 )
. " Plat:"
. $_->{platform}
. " Push:"
. $_->{pushstate} );
$ndx++;
}
printInfo("Reloading Monitors...\n");
foreach my $monitor ( values(%monitors) ) {
zmMemInvalidate($monitor);
}
loadMonitors();
}
elsif (@needsReload) {
my @failedReloads = ();
while (@needsReload) {
my $monitor = shift @needsReload;
if ( !loadMonitor($monitor) ) {
printError( 'Failed re-loading monitor:'
. $monitor->{Id}
. ' adding back to reload list for next iteration' );
push( @failedReloads, $monitor );
}
}
@needsReload = @failedReloads;
}
# loop through all monitors getting SHM state
foreach my $monitor ( values(%monitors) ) {
my $alarm_cause = "";
if ( !zmMemVerify($monitor) ) {
push @needsReload, $monitor;
Warning( " Memory verify failed for "
. $monitor->{Name} . "(id:"
. $monitor->{Id}
. ")" );
next;
}
my ( $state, $current_event, $trigger_cause, $trigger_text ) = zmMemRead(
$monitor,
[ "shared_data:state", "shared_data:last_event",
"trigger_data:trigger_cause", "trigger_data:trigger_text",
]
);
next if ( !$current_event ); # will it ever happen?
$alarm_cause = zmMemRead( $monitor, "shared_data:alarm_cause" )
if ($read_alarm_cause);
$alarm_cause = $trigger_cause
if ( defined($trigger_cause)
&& $alarm_cause eq ""
&& $trigger_cause ne "" );
my $mid = $monitor->{Id};
# Alert only happens after alarm. The state before alarm
# is STATE_PRE_ALERT. This is needed to catch alarms
# that occur in < polling time of ES and then moves to ALERT
if ( $state == STATE_ALARM || $state == STATE_ALERT ) {
if ( !$active_events{$mid}->{$current_event} ) {
# this means we haven't previously worked on this alarm
# so create an event start object for this monitor
$eventFound++;
# First we need to close any other open events for this monitor
foreach my $ev ( keys %{ $active_events{$mid} } ) {
if ( !$active_events{$mid}->{$ev}->{End} ) {
printDebug(
"Closing unclosed event:$ev of Monitor:$mid as we are in a new event"
);
$active_events{$mid}->{$ev}->{End} = {
State => 'pending',
Time => time(),
Cause => getNotesFromEventDB($ev)
}
}
}
# add this new event to active events
$active_events{$mid}->{$current_event} = {
MonitorId => $monitor->{Id},
MonitorName => $monitor->{Name},
EventId => $current_event,
Start => {
State => 'pending',
Time => time(),
Cause => $alarm_cause,
},
};
#print Dumper($active_events{$mid}->{$current_event});
printInfo( "New event $current_event reported for Monitor:"
. $monitor->{Id}
. " (Name:"
. $monitor->{Name} . ") "
. $alarm_cause
. "\n" );
push @newEvents,
{
Alarm => $active_events{$mid}->{$current_event},
MonitorObj => $monitor
};
}
else {
# state alarm and it is present in the active event list, so we've worked on it
printDebug(
"We've already worked on Monitor:$mid, Event:$current_event, not doing anything more"
);
}
}
}
printDebug("checkEvents() new events found=$eventFound");
return (@newEvents);
}
sub loadMonitor {
my $monitor = shift;
printInfo( "loadMonitor: re-loading monitor " . $monitor->{Name} );
zmMemInvalidate($monitor);
if ( zmMemVerify($monitor) ) { # This will re-init shared memory
$monitor->{CurrentState} = zmGetMonitorState($monitor);
$monitor->{CurrentEvent} = zmGetLastEvent($monitor);
return 1;
}
return 0; # coming here means verify failed
}
# Refreshes list of monitors from DB
#
sub loadMonitors {
printInfo("Re-loading monitors, emptying needsReload() list\n");
@needsReload = ();
$monitor_reload_time = time();
my %new_monitors = ();
my $sql = "SELECT * FROM Monitors
WHERE find_in_set( Function, 'Modect,Mocord,Nodect' )"
. ( $Config{ZM_SERVER_ID} ? 'AND ServerId=?' : '' );
my $sth = $dbh->prepare_cached($sql)
or Fatal( "Can't prepare '$sql': " . $dbh->errstr() );
my $res = $sth->execute( $Config{ZM_SERVER_ID} ? $Config{ZM_SERVER_ID} : () )
or Fatal( "Can't execute: " . $sth->errstr() );
while ( my $monitor = $sth->fetchrow_hashref() ) {
if ( zmMemVerify($monitor) ) {
$monitor->{CurrentState} = zmGetMonitorState($monitor);
$monitor->{CurrentEvent} = zmGetLastEvent($monitor);
$new_monitors{ $monitor->{Id} } = $monitor;
}
else {
printError( "loadMonitors: zmMemVerify for monitor:"
. $monitor->{Id}
. " failed, setting up for reload in next iteration" );
push @needsReload, $monitor;
}
} # end while fetchrow
%monitors = %new_monitors;
}
# Updated Notes DB of events with detection text
# if available (hook enabled)