kopia lustrzana https://github.com/weetmuts/wmbusmeters
411 wiersze
15 KiB
C++
411 wiersze
15 KiB
C++
/*
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Copyright (C) 2017-2019 Fredrik Öhrström
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include"cmdline.h"
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#include"config.h"
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#include"meters.h"
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#include"printer.h"
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#include"serial.h"
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#include"util.h"
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#include"wmbus.h"
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#include<string.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <fcntl.h>
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#include <sys/errno.h>
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#include <unistd.h>
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#include <syslog.h>
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#include <string.h>
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using namespace std;
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void oneshotCheck(Configuration *cmdline, SerialCommunicationManager *manager, Telegram *t, Meter *meter, vector<unique_ptr<Meter>> &meters);
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void startUsingCommandline(Configuration *cmdline);
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void startUsingConfigFiles(string root, bool is_daemon);
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void startDaemon(string pid_file); // Will use config files.
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int main(int argc, char **argv)
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{
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auto cmdline = parseCommandLine(argc, argv);
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if (cmdline->need_help) {
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printf("wmbusmeters version: " WMBUSMETERS_VERSION "\n");
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const char *msg = R"MANUAL(
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Usage: wmbusmeters {options} <device> ( [meter_name] [meter_type] [meter_id] [meter_key] )*
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As <options> you can use:
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--c1 or --t1 listen to C1 or T1 messages when no meters are supplied, not needed for rtlwmbus
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--debug for a lot of information
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--exitafter=<time> exit program after time, eg 20h, 10m 5s
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--format=<hr/json/fields> for human readable, json or semicolon separated fields
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--logfile=<file> use this file instead of stdout
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--logtelegrams log the contents of the telegrams for easy replay
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--meterfiles=<dir> store meter readings in dir
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--meterfilesaction=(overwrite|append) overwrite or append to the meter readings file
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--oneshot wait for an update from each meter, then quit
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--separator=<c> change field separator to c
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--shell=<cmdline> invokes cmdline with env variables containing the latest reading
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--shellenvs list the env variables available for the meter
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--useconfig=<dir> load config files from dir/etc
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--verbose for more information
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As a <device> you can use: auto
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which will look for the links /dev/im87a,/dev/amb8475 and /dev/rtlsdr (the
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links are automatically generated by udev if you have run the install scripts.)
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and start wmbusmeters with the proper tty device or rtlwmbus background process.
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As a <device> you can also use: the exact /dev/ttyUSB0 to your dongle if you do not want
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to install the udev rule.
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As a <device> you can also use: rtlwmbus
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to spawn the background process: \"rtl_sdr -f 868.95M -s 1600000 - 2>/dev/null | rtl_wmbus\"
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You can also use: rtlwmbus:868.9M to use this fq instead. Fq tuning can sometimes
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be necessary. Or you can specify the entire background process command line: \"rtlwmbus:<commandline>\"
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As meter quadruples you specify:
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<meter_name> a mnemonic for this particular meter
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<meter_type> one of the supported meters
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<meter_id> an 8 digit mbus id, usually printed on the meter
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<meter_key> an encryption key unique for the meter
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if the meter uses no encryption, then supply ""
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Supported water meters:
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Kamstrup Multical 21 (multical21)
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Kamstrup flowIQ 3100 (flowiq3100)
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Sontex Supercom 587 (supercom587)
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Sensus iPERL (iperl)
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Supported heat cost allocator:
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Qundis Q caloric (qcaloric)
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Work in progress:
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Water meter Apator at-wmbus-16-2 (apator162)
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Heat meter Kamstrup Multical 302 (multical302)
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Electricity meter Kamstrup Omnipower (omnipower) and Tauron Amiplus (amiplus)
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)MANUAL";
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puts(msg);
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}
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else
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if (cmdline->daemon) {
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startDaemon(cmdline->pid_file);
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exit(0);
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}
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else
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if (cmdline->useconfig) {
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startUsingConfigFiles(cmdline->config_root, false);
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exit(0);
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}
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else {
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// We want the data visible in the log file asap!
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setbuf(stdout, NULL);
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startUsingCommandline(cmdline.get());
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}
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}
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void startUsingCommandline(Configuration *config)
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{
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if (config->use_logfile) {
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verbose("(wmbusmeters) using log file %s\n", config->logfile.c_str());
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bool ok = enableLogfile(config->logfile, config->daemon);
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if (!ok) {
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if (config->daemon) {
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warning("Could not open log file, will use syslog instead.\n");
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} else {
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error("Could not open log file.\n");
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}
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}
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}
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warningSilenced(config->silence);
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verboseEnabled(config->verbose);
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logTelegramsEnabled(config->logtelegrams);
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debugEnabled(config->debug);
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debug("(wmbusmeters) version: " WMBUSMETERS_VERSION "\n");
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if (config->exitafter != 0) {
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verbose("(config) wmbusmeters will exit after %d seconds\n", config->exitafter);
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}
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if (config->meterfiles) {
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verbose("(config) store meter files in: \"%s\"\n", config->meterfiles_dir.c_str());
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}
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verbose("(config) using device: %s\n", config->device.c_str());
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if (config->device_extra.length() > 0) {
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verbose("(config) with: %s\n", config->device_extra.c_str());
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}
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verbose("(config) number of meters: %d\n", config->meters.size());
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auto manager = createSerialCommunicationManager(config->exitafter);
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onExit(call(manager.get(),stop));
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unique_ptr<WMBus> wmbus;
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auto type_and_device = detectMBusDevice(config->device, manager.get());
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switch (type_and_device.first) {
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case DEVICE_IM871A:
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verbose("(im871a) detected on %s\n", type_and_device.second.c_str());
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wmbus = openIM871A(type_and_device.second, manager.get());
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break;
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case DEVICE_AMB8465:
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verbose("(amb8465) detected on %s\n", type_and_device.second.c_str());
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wmbus = openAMB8465(type_and_device.second, manager.get());
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break;
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case DEVICE_SIMULATOR:
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verbose("(simulator) found %s\n", type_and_device.second.c_str());
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wmbus = openSimulator(type_and_device.second, manager.get());
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break;
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case DEVICE_RTLWMBUS:
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{
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string command = config->device_extra;
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string freq = "868.95M";
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string prefix = "";
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if (isFrequency(command)) {
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freq = command;
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command = "";
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}
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if (config->daemon) {
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prefix = "/usr/bin/";
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}
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if (command == "") {
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command = prefix+"rtl_sdr -f "+freq+" -s 16000000 - 2>/dev/null | "+prefix+"rtl_wmbus";
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}
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verbose("(rtlwmbus) using command: %s\n", command.c_str());
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wmbus = openRTLWMBUS(command, manager.get(),
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[command](){
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warning("(rtlwmbus) child process exited! "
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"Command was: \"%s\"\n", command.c_str());
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});
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break;
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}
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case DEVICE_UNKNOWN:
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warning("No wmbus device found! Exiting!\n");
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if (config->daemon) {
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// If starting as a daemon, wait a bit so that systemd have time to catch up.
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sleep(1);
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}
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exit(1);
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break;
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}
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if (!config->link_mode_set) {
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// The link mode is not explicitly set. Examine the meters to see which
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// link mode to use.
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for (auto &m : config->meters) {
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if (!config->link_mode_set) {
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config->link_mode = toMeterLinkMode(m.type);
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config->link_mode_set = true;
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} else {
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if (config->link_mode != toMeterLinkMode(m.type) && type_and_device.first != DEVICE_RTLWMBUS) {
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// sdr_rtl|rtl_wmbus can listen to both C1 and T1 at the same time.
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error("A different link mode has been set already.\n");
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}
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}
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}
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}
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if (!config->link_mode_set && type_and_device.first != DEVICE_RTLWMBUS && type_and_device.first != DEVICE_SIMULATOR) {
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// sdr_rtl|rtl_wmbus can listen to both C1 and T1 at the same time.
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// also using a simulator file, then you listen to all of the traffic in that file.
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error("If you specify no meters, you have to specify the link mode: --c1 or --t1\n");
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}
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wmbus->setLinkMode(config->link_mode);
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string using_link_mode = linkModeName(wmbus->getLinkMode());
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verbose("(config) using link mode: %s\n", using_link_mode.c_str());
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auto output = unique_ptr<Printer>(new Printer(config->json, config->fields,
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config->separator, config->meterfiles, config->meterfiles_dir,
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config->use_logfile, config->logfile,
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config->shells,
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config->meterfiles_action == MeterFileType::Overwrite));
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vector<unique_ptr<Meter>> meters;
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if (config->meters.size() > 0) {
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for (auto &m : config->meters) {
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const char *keymsg = (m.key[0] == 0) ? "not-encrypted" : "encrypted";
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switch (toMeterType(m.type)) {
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case MULTICAL21_METER:
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meters.push_back(createMultical21(wmbus.get(), m.name, m.id, m.key));
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verbose("(multical21) configured \"%s\" \"multical21\" \"%s\" %s\n", m.name.c_str(), m.id.c_str(), keymsg);
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break;
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case FLOWIQ3100_METER:
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meters.push_back(createMultical21(wmbus.get(), m.name, m.id, m.key));
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verbose("(flowiq3100) configured \"%s\" \"flowiq3100\" \"%s\" %s\n", m.name.c_str(), m.id.c_str(), keymsg);
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break;
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case MULTICAL302_METER:
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meters.push_back(createMultical302(wmbus.get(), m.name, m.id, m.key));
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verbose("(multical302) configured \"%s\" \"multical302\" \"%s\" %s\n", m.name.c_str(), m.id.c_str(), keymsg);
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break;
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case OMNIPOWER_METER:
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meters.push_back(createOmnipower(wmbus.get(), m.name, m.id, m.key));
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verbose("(omnipower) configured \"%s\" \"omnipower\" \"%s\" %s\n", m.name.c_str(), m.id.c_str(), keymsg);
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break;
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case AMIPLUS_METER:
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meters.push_back(createAmiplus(wmbus.get(), m.name, m.id, m.key));
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verbose("(amiplus) configured \"%s\" \"amiplus\" \"%s\" %s\n", m.name.c_str(), m.id.c_str(), keymsg);
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break;
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case SUPERCOM587_METER:
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meters.push_back(createSupercom587(wmbus.get(), m.name, m.id, m.key));
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verbose("(supercom587) configured \"%s\" \"supercom587\" \"%s\" %s\n", m.name.c_str(), m.id.c_str(), keymsg);
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break;
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case IPERL_METER:
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meters.push_back(createIperl(wmbus.get(), m.name, m.id, m.key));
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verbose("(iperl) configured \"%s\" \"iperl\" \"%s\" %s\n", m.name.c_str(), m.id.c_str(), keymsg);
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break;
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case QCALORIC_METER:
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meters.push_back(createQCaloric(wmbus.get(), m.name, m.id, m.key));
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verbose("(qcaloric) configured \"%s\" \"qcaloric\" \"%s\" %s\n", m.name.c_str(), m.id.c_str(), keymsg);
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break;
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case APATOR162_METER:
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meters.push_back(createApator162(wmbus.get(), m.name, m.id, m.key));
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verbose("(apator162) configured \"%s\" \"apator162\" \"%s\" %s\n", m.name.c_str(), m.id.c_str(), keymsg);
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break;
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case UNKNOWN_METER:
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error("No such meter type \"%s\"\n", m.type.c_str());
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break;
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}
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if (config->list_shell_envs) {
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string ignore1, ignore2, ignore3;
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vector<string> envs;
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Telegram t;
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meters.back()->printMeter(&t,
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&ignore1,
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&ignore2, config->separator,
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&ignore3,
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&envs);
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printf("Environment variables provided to shell for meter %s:\n", m.type.c_str());
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for (auto &e : envs) {
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int p = e.find('=');
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string key = e.substr(0,p);
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printf("%s\n", key.c_str());
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}
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exit(0);
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}
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meters.back()->onUpdate([&](Telegram*t,Meter* meter) { output->print(t,meter); });
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meters.back()->onUpdate([&](Telegram*t, Meter* meter) { oneshotCheck(config, manager.get(), t, meter, meters); });
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}
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} else {
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notice("No meters configured. Printing id:s of all telegrams heard!\n\n");
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wmbus->onTelegram([](Telegram *t){t->print();});
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}
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if (type_and_device.first == DEVICE_SIMULATOR) {
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wmbus->simulate();
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}
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if (config->daemon) {
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notice("(wmbusmeters) waiting for telegrams\n");
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}
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manager->waitForStop();
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if (config->daemon) {
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notice("(wmbusmeters) shutting down\n");
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}
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}
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void oneshotCheck(Configuration *config, SerialCommunicationManager *manager, Telegram *t, Meter *meter, vector<unique_ptr<Meter>> &meters)
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{
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if (!config->oneshot) return;
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for (auto &m : meters) {
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if (m->numUpdates() == 0) return;
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}
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// All meters have received at least one update! Stop!
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verbose("(main) all meters have received at least one update, stopping.\n");
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manager->stop();
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}
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void writePid(string pid_file, int pid)
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{
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FILE *pidf = fopen(pid_file.c_str(), "w");
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if (!pidf) {
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error("Could not open pid file \"%s\" for writing!\n", pid_file.c_str());
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}
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if (pid > 0) {
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int n = fprintf(pidf, "%d\n", pid);
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if (!n) {
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error("Could not write pid (%d) to file \"%s\"!\n", pid, pid_file.c_str());
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}
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notice("(wmbusmeters) started %s\n", pid_file.c_str());
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}
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fclose(pidf);
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return;
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}
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void startDaemon(string pid_file)
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{
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setlogmask(LOG_UPTO (LOG_INFO));
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openlog("wmbusmetersd", LOG_CONS | LOG_PID | LOG_NDELAY, LOG_LOCAL1);
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enableSyslog();
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// Pre check that the pid file can be writte to.
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// Exit before fork, if it fails.
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writePid(pid_file, 0);
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pid_t pid = fork();
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if (pid < 0)
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{
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error("Could not fork.\n");
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}
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if (pid > 0)
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{
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// Success! The parent stores the pid and exits.
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writePid(pid_file, pid);
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return;
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}
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// Change the file mode mask
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umask(0);
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// Create a new SID for the daemon
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pid_t sid = setsid();
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if (sid < 0) {
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// log
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exit(-1);
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}
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if ((chdir("/")) < 0) {
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error("Could not change to root as current working directory.");
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}
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close(STDIN_FILENO);
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close(STDOUT_FILENO);
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close(STDERR_FILENO);
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startUsingConfigFiles("", true);
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}
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void startUsingConfigFiles(string root, bool is_daemon)
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{
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unique_ptr<Configuration> config = loadConfiguration(root);
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config->daemon = is_daemon;
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startUsingCommandline(config.get());
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}
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