86 lines
1.9 KiB
Go
86 lines
1.9 KiB
Go
package web
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import (
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"fmt"
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"log/slog"
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"time"
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"github.com/aceberg/WatchYourLAN/internal/arp"
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"github.com/aceberg/WatchYourLAN/internal/db"
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"github.com/aceberg/WatchYourLAN/internal/influx"
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"github.com/aceberg/WatchYourLAN/internal/models"
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"github.com/aceberg/WatchYourLAN/internal/notify"
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)
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func startScan(quit chan bool) {
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var lastDate, nowDate, plusDate time.Time
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var foundHosts []models.Host
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for {
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select {
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case <-quit:
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return
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default:
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nowDate = time.Now()
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plusDate = lastDate.Add(time.Duration(appConfig.Timeout) * time.Second)
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if nowDate.After(plusDate) {
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foundHosts = arp.Scan(appConfig.Ifaces, appConfig.ArpArgs, appConfig.ArpStrs)
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compareHosts(foundHosts)
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allHosts = db.Select("now")
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lastDate = time.Now()
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}
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time.Sleep(time.Duration(1) * time.Second)
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}
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}
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}
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func compareHosts(foundHosts []models.Host) {
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// Make map of found hosts
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foundHostsMap := make(map[string]models.Host)
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for _, fHost := range foundHosts {
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foundHostsMap[fHost.Mac] = fHost
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}
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for _, aHost := range allHosts {
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fHost, exists := foundHostsMap[aHost.Mac]
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if exists {
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aHost.Iface = fHost.Iface
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aHost.IP = fHost.IP
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aHost.Date = fHost.Date
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aHost.Now = 1
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delete(foundHostsMap, aHost.Mac)
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} else {
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aHost.Now = 0
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}
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db.Update("now", aHost)
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aHost.Date = time.Now().Format("2006-01-02 15:04:05")
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histHosts = append(histHosts, aHost)
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if appConfig.HistInDB {
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db.Insert("history", aHost)
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}
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if appConfig.InfluxEnable {
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influx.Add(appConfig, aHost)
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}
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}
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for _, fHost := range foundHostsMap {
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fHost.Name, fHost.DNS = updateDNS(fHost)
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msg := fmt.Sprintf("WatchYourLAN: unknown host found. Names: '%s', IP: '%s', MAC: '%s', Hw: '%s', Iface: '%s'", fHost.DNS, fHost.IP, fHost.Mac, fHost.Hw, fHost.Iface)
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slog.Warn(msg)
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notify.Shout(msg, appConfig.ShoutURL) // Notify through Shoutrrr
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db.Insert("now", fHost)
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}
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}
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