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Copy pathscan.js
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141 lines (113 loc) · 3.98 KB
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require('env2')('config.env');
var wsclient = require('./lib/ws-client');
var fs = require('fs');
var utils = require('./lib/utils')
var events = require('events')
var util = require('util');
var async = require('async');
var fs = require('fs');
var debug = require('debug')('explore');
var getopt = require('node-getopt');
var options = new getopt([
['a' , 'no-advertisements' , 'do not save advertisements (default: save)'],
['r' , 'no-read' , 'do not read characteristics values (default: read), helpful when device requires auth and service exploring stalls'],
['o' , 'overwrite' , 'overwrite peripheral services file'],
['f' , 'funmode' , 'have fun!'],
['' , 'jk' , 'see http://xkcd.com/1692'],
['h' , 'help' , 'display this help'],
]);
options.setHelp('Usage: node scan [ -a ] [ -r ] [ peripheral ]\n' +
'peripheral - optional peripheral device do explore services (MAC address e.g. ec:fe:7e:12:34:56 or id e.g. ecfe7e123456). If not provided, broadcast advertisement scan.' +
'Command-line options:\n[[OPTIONS]]' )
opt=options.parseSystem();
if (opt.options.help) {
options.showHelp()
process.exit(0)
}
if (opt.options.funmode) {
console.log('>>>>>>>>>>>>>>>>> MAY THE FUN BE WITH YOU! <<<<<<<<<<<<<<<<<<'.rainbow.inverse)
}
if (opt.argv.length > 0) {
var specifiedPeripheral = opt.argv[0].replace(/:/g,'').toLowerCase();
}
var devicesPath=process.env.DEVICES_PATH;
var scanOrExplore = '';
var peripherals=[];
var saveAdvertisements=true;
var readValues=true;
var overWriteServices=false;
if (opt.options["no-advertisements"]) {
console.log('Not saving advertisement discovery.');
saveAdvertisements=false;
}
if (opt.options["no-read"]) {
console.log('Not reading characteristic values.')
readValues=false;
}
if (opt.options.overwrite) {
console.log('Overwrite services file if exists.');
overWriteServices=true;
}
function exploreSpecified(peripheralId) {
checkFile(peripheralId, function(exists){
if (!exists) {
console.log('Start to explore ' + peripheralId)
wsclient.explore(peripheralId, readValues);
} else {
console.log('Services file for ' + peripheralId + ' already saved, skipping. Use -o option to overwrite.');
}
})
}
//check if the services file exists
function checkFile(peripheralId, callback) {
if (overWriteServices) {
callback(false);
} else {
fs.stat(devicesPath + '/' + peripheralId + '.srv.json', function(err, stat) {
if(err == null) {
callback(true);
// console.log('File exists');
} else {
callback(false)
}
});
}
}
wsclient.on('stateChange', function(state) {
if (state === 'poweredOn') {
if (specifiedPeripheral) {
console.log('Start exploring ' + specifiedPeripheral);
exploreSpecified(specifiedPeripheral)
} else {
console.log('Start scanning.');
wsclient.startScanning();
}
} else if (state === 'unknown') {
console.log('state unknown - waiting...')
} else {
wsclient.stopScanning();
}
});
wsclient.on('discover', function(peripheralId, address, addressType, connectable, advertisement, rssi) {
if (saveAdvertisements) {
utils.saveAdvertisement(peripheralId, address, addressType, connectable, advertisement, rssi);
}
if (!peripherals[peripheralId]) {
peripherals[peripheralId] = { explored: false, triedToExplore: false};
}
})
wsclient.on('explore', function(peripheralId, state, servicesJson){
console.log('explore state: ' + peripheralId + ' : ' + state);
if(state === 'finished') {
var filename = devicesPath+'/'+peripheralId+'.srv.json';
fs.writeFile(filename, JSON.stringify(servicesJson, null, 4), function(err) {
if(err) {
return console.log(err);
}
console.log("Services file "+ filename +" saved!");
if (peripheralId === specifiedPeripheral) {
process.exit(0);
}
});
}
})