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42 lines
837 B
42 lines
837 B
package main
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import (
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"encoding/json"
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"log"
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"net"
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"net/http"
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"github.com/chrismarget/arp"
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"github.com/spf13/viper"
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)
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type IPInfo struct {
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IP string `json:"ip"`
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MacAddress string `json:"mac,omitempty"`
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}
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func main() {
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log.SetFlags(log.Flags() &^ (log.Ldate | log.Ltime))
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viper.SetDefault("ListenAddr", ":8080")
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viper.SetEnvPrefix("WIMIP")
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viper.AutomaticEnv()
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http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
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var info IPInfo
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ip, _, err := net.SplitHostPort(r.RemoteAddr)
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if err != nil {
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w.WriteHeader(500)
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}
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info.IP = ip
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arp.CacheUpdate()
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info.MacAddress = arp.Search(ip)
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out, _ := json.MarshalIndent(info, "", " ")
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w.Write(out)
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})
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log.Printf("Listening on %s...", viper.GetString("ListenAddr"))
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log.Fatal(http.ListenAndServe(viper.GetString("ListenAddr"), nil))
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}
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