kopia lustrzana https://github.com/weetmuts/wmbusmeters
428 wiersze
13 KiB
C++
428 wiersze
13 KiB
C++
/*
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Copyright (C) 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"config.h"
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#include"meters.h"
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#include"units.h"
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#include<vector>
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#include<string>
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#include<string.h>
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using namespace std;
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pair<string,string> getNextKeyValue(vector<char> &buf, vector<char>::iterator &i)
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{
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bool eof, err;
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string key, value;
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key = eatToSkipWhitespace(buf, i, '=', 64, &eof, &err);
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if (eof || err) goto nomore;
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value = eatToSkipWhitespace(buf, i, '\n', 4096, &eof, &err);
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if (err) goto nomore;
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return { key, value };
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nomore:
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return { "", "" };
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}
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void parseMeterConfig(Configuration *c, vector<char> &buf, string file)
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{
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auto i = buf.begin();
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string name;
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string type;
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string id;
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string key;
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string linkmodes;
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vector<string> shells;
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debug("(config) loading meter file %s\n", file.c_str());
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for (;;) {
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auto p = getNextKeyValue(buf, i);
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if (p.first == "") break;
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if (p.first == "name") name = p.second;
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else
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if (p.first == "type") type = p.second;
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else
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if (p.first == "id") id = p.second;
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else
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if (p.first == "key") {
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key = p.second;
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debug("(config) key=<notprinted>\n");
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}
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else
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if (p.first == "shell") {
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shells.push_back(p.second);
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}
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else
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warning("Found invalid key \"%s\" in meter config file\n", p.first.c_str());
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if (p.first != "key") {
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debug("(config) %s=%s\n", p.first.c_str(), p.second.c_str());
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}
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}
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MeterType mt = toMeterType(type);
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bool use = true;
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LinkModeSet modes;
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size_t colon = type.find(':');
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if (colon != string::npos)
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{
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// The config can be supplied after the type, like this:
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// apator162:c1
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string modess = type.substr(colon+1);
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type = type.substr(0, colon);
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mt = toMeterType(type);
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if (mt == MeterType::UNKNOWN) {
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warning("Not a valid meter type \"%s\"\n", type.c_str());
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use = false;
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}
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modes = parseLinkModes(modess);
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LinkModeSet default_modes = toMeterLinkModeSet(type);
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if (!default_modes.hasAll(modes))
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{
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string want = modes.hr();
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string has = default_modes.hr();
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error("(cmdline) cannot set link modes to: %s because meter %s only transmits on: %s\n",
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want.c_str(), type.c_str(), has.c_str());
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}
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string modeshr = modes.hr();
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debug("(cmdline) setting link modes to %s for meter %s\n",
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modeshr.c_str(), name.c_str());
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}
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else {
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modes = toMeterLinkModeSet(type);
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}
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if (mt == MeterType::UNKNOWN) {
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warning("Not a valid meter type \"%s\"\n", type.c_str());
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use = false;
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}
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if (!isValidId(id)) {
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warning("Not a valid meter id \"%s\"\n", id.c_str());
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use = false;
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}
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if (!isValidKey(key)) {
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warning("Not a valid meter key \"%s\"\n", key.c_str());
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use = false;
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}
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if (use) {
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c->meters.push_back(MeterInfo(name, type, id, key, modes, shells));
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}
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return;
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}
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void handleLoglevel(Configuration *c, string loglevel)
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{
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if (loglevel == "verbose") { c->verbose = true; }
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else if (loglevel == "debug")
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{
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c->debug = true;
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// Kick in debug immediately.
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debugEnabled(c->debug);
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}
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else if (loglevel == "silent") { c->silence = true; }
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else if (loglevel == "normal") { }
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else {
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warning("No such log level: \"%s\"\n", loglevel.c_str());
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}
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}
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void handleDevice(Configuration *c, string device)
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{
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// device can be:
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// /dev/ttyUSB00
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// auto
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// rtlwmbus:/usr/bin/rtl_sdr -f 868.9M -s 1600000 - 2>/dev/null | /usr/bin/rtl_wmbus
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// simulation....txt (read telegrams from file)
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size_t p = device.find (':');
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if (p != string::npos)
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{
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c->device_extra = device.substr(p+1);
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c->device = device.substr(0,p);
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} else {
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c->device = device;
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}
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}
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void handleListenTo(Configuration *c, string mode)
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{
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LinkMode lm = isLinkMode(mode.c_str());
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if (lm == LinkMode::UNKNOWN) {
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error("Unknown link mode \"%s\"!\n", mode.c_str());
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}
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if (c->link_mode_configured) {
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error("You have already specified a link mode!\n");
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}
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c->listen_to_link_modes.addLinkMode(lm);
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c->link_mode_configured = true;
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}
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void handleLogtelegrams(Configuration *c, string logtelegrams)
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{
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if (logtelegrams == "true") { c->logtelegrams = true; }
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else if (logtelegrams == "false") { c->logtelegrams = false;}
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else {
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warning("No such logtelegrams setting: \"%s\"\n", logtelegrams.c_str());
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}
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}
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void handleMeterfiles(Configuration *c, string meterfiles)
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{
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if (meterfiles.length() > 0)
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{
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c->meterfiles_dir = meterfiles;
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c->meterfiles = true;
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if (!checkIfDirExists(c->meterfiles_dir.c_str())) {
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warning("Cannot write meter files into dir \"%s\"\n", c->meterfiles_dir.c_str());
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}
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}
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}
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void handleMeterfilesAction(Configuration *c, string meterfilesaction)
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{
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if (meterfilesaction == "overwrite")
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{
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c->meterfiles_action = MeterFileType::Overwrite;
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} else if (meterfilesaction == "append")
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{
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c->meterfiles_action = MeterFileType::Append;
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} else {
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warning("No such meter file action \"%s\"\n", meterfilesaction.c_str());
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}
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}
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void handleMeterfilesNaming(Configuration *c, string type)
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{
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if (type == "name")
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{
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c->meterfiles_naming = MeterFileNaming::Name;
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}
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else if (type == "id")
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{
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c->meterfiles_naming = MeterFileNaming::Id;
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}
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else if (type == "name-id")
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{
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c->meterfiles_naming = MeterFileNaming::NameId;
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}
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else
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{
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warning("No such meter file naming \"%s\"\n", type.c_str());
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}
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}
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void handleLogfile(Configuration *c, string logfile)
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{
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if (logfile.length() > 0)
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{
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c->use_logfile = true;
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c->logfile = logfile;
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}
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}
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void handleFormat(Configuration *c, string format)
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{
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if (format == "hr")
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{
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c->json = false;
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c->fields = false;
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} else if (format == "json")
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{
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c->json = true;
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c->fields = false;
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}
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else if (format == "fields")
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{
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c->json = false;
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c->fields = true;
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c->separator = ';';
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} else {
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warning("Unknown output format: \"%s\"\n", format.c_str());
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}
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}
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void handleSeparator(Configuration *c, string s)
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{
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if (s.length() == 1) {
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c->separator = s[0];
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} else {
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warning("Separator must be a single character.\n");
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}
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}
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void handleConversions(Configuration *c, string s)
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{
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char buf[s.length()+1];
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strcpy(buf, s.c_str());
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const char *tok = strtok(buf, ",");
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while (tok != NULL)
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{
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Unit u = toUnit(tok);
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if (u == Unit::Unknown)
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{
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warning("(warning) not a valid conversion unit: %s\n", tok);
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}
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c->conversions.push_back(u);
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tok = strtok(NULL, ",");
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}
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}
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void handleShell(Configuration *c, string cmdline)
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{
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c->shells.push_back(cmdline);
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}
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unique_ptr<Configuration> loadConfiguration(string root)
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{
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Configuration *c = new Configuration;
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// JSon is default when configuring from config files.
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c->json = true;
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vector<char> global_conf;
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bool ok = loadFile(root+"/etc/wmbusmeters.conf", &global_conf);
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global_conf.push_back('\n');
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if (!ok) exit(1);
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auto i = global_conf.begin();
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for (;;) {
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auto p = getNextKeyValue(global_conf, i);
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if (p.first == "") break;
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if (p.first == "loglevel") handleLoglevel(c, p.second);
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else if (p.first == "device") handleDevice(c, p.second);
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else if (p.first == "listento") handleListenTo(c, p.second);
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else if (p.first == "logtelegrams") handleLogtelegrams(c, p.second);
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else if (p.first == "meterfiles") handleMeterfiles(c, p.second);
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else if (p.first == "meterfilesaction") handleMeterfilesAction(c, p.second);
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else if (p.first == "meterfilesnaming") handleMeterfilesNaming(c, p.second);
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else if (p.first == "logfile") handleLogfile(c, p.second);
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else if (p.first == "format") handleFormat(c, p.second);
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else if (p.first == "separator") handleSeparator(c, p.second);
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else if (p.first == "addconversions") handleConversions(c, p.second);
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else if (p.first == "shell") handleShell(c, p.second);
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else
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{
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warning("No such key: %s\n", p.first.c_str());
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}
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}
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vector<string> meters;
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listFiles(root+"/etc/wmbusmeters.d", &meters);
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for (auto& f : meters)
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{
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vector<char> meter_conf;
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string file = root+"/etc/wmbusmeters.d/"+f;
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loadFile(file.c_str(), &meter_conf);
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meter_conf.push_back('\n');
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parseMeterConfig(c, meter_conf, file);
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}
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return unique_ptr<Configuration>(c);
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}
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LinkModeCalculationResult calculateLinkModes(Configuration *config, WMBus *wmbus)
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{
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int n = wmbus->numConcurrentLinkModes();
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string num = to_string(n);
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if (n == 0) num = "any combination";
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string dongles = wmbus->supportedLinkModes().hr();
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string dongle;
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strprintf(dongle, "%s of %s", num.c_str(), dongles.c_str());
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// Calculate the possible listen_to linkmodes for this collection of meters.
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LinkModeSet meters_union = UNKNOWN_bit;
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for (auto &m : config->meters)
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{
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meters_union.unionLinkModeSet(m.link_modes);
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string meter = m.link_modes.hr();
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debug("(config) meter %s link mode(s): %s\n", m.type.c_str(), meter.c_str());
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}
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string metersu = meters_union.hr();
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debug("(config) all possible link modes that the meters might transmit on: %s\n", metersu.c_str());
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if (meters_union.bits() == 0) {
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if (!config->link_mode_configured)
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{
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string msg;
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strprintf(msg,"(config) No meters supplied. You must supply which link modes to listen to. Eg. --listento=<modes>");
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debug("%s\n", msg.c_str());
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return { LinkModeCalculationResultType::NoMetersMustSupplyModes , msg};
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}
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}
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if (!config->link_mode_configured)
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{
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// A listen_to link mode has not been set explicitly. Pick a listen_to link
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// mode that is supported by the wmbus dongle and works for the meters.
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config->listen_to_link_modes = wmbus->supportedLinkModes();
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config->listen_to_link_modes.disjunctionLinkModeSet(meters_union);
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if (!wmbus->canSetLinkModes(config->listen_to_link_modes))
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{
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// The automatically calculated link modes cannot be set in the dongle.
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// Ie the dongle needs help....
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string msg;
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strprintf(msg,"(config) Automatic deduction of which link mode to listen to failed since the meters might transmit using: %s\n"
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"(config) But the dongle can only listen to: %s Please supply the exact link mode(s) to listen to, eg: --listento=<mode>\n"
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"(config) and/or specify the expected transmit modes for the meters, eg: apator162:t1\n"
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"(config) or use a dongle that can listen to all the required link modes at the same time.",
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metersu.c_str(), dongle.c_str());
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debug("%s\n", msg.c_str());
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return { LinkModeCalculationResultType::AutomaticDeductionFailed , msg};
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}
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config->link_mode_configured = true;
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}
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else
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{
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string listen = config->listen_to_link_modes.hr();
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debug("(config) explicitly listening to: %s\n", listen.c_str());
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}
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string listen = config->listen_to_link_modes.hr();
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if (!wmbus->canSetLinkModes(config->listen_to_link_modes))
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{
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string msg;
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strprintf(msg, "(config) You have specified to listen to the link modes: %s but the dongle can only listen to: %s",
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listen.c_str(), dongle.c_str());
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debug("%s\n", msg.c_str());
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return { LinkModeCalculationResultType::DongleCannotListenTo , msg};
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}
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if (!config->listen_to_link_modes.hasAll(meters_union))
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{
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string msg;
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strprintf(msg, "(config) You have specified to listen to the link modes: %s but the meters might transmit on: %s\n"
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"(config) Therefore you might miss telegrams! Please specify the expected transmit mode for the meters, eg: apator162:t1\n"
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"(config) Or use a dongle that can listen to all the required link modes at the same time.",
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listen.c_str(), metersu.c_str());
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debug("%s\n", msg.c_str());
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return { LinkModeCalculationResultType::MightMissTelegrams, msg};
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}
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debug("(config) listen link modes calculated to be: %s\n", listen.c_str());
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return { LinkModeCalculationResultType::Success, "" };
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}
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