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package main
import (
"encoding/json"
"fmt"
"io/ioutil"
"log"
"net/http"
"strings"
"github.com/gliderlabs/ssh"
)
// Handling incoming SSH connections
func handlePass(ctx ssh.Context, pass string) bool {
// increase the counter tracking the amount of passwords catched
metrics_num_passwords++
log.Printf("%s@%s: '%s'", ctx.User(), ctx.RemoteAddr().String(), pass)
// get the ip of the remote user
stringip := strings.Split(ctx.RemoteAddr().String(), ":")[0]
// Define the request string for the geoip service
requestString := fmt.Sprintf("%s%s", "http://ip-api.com/json/", stringip)
// Send the GET request
resp, err := http.Get(requestString)
if err != nil {
log.Fatal(err)
}
// if the response status code from the geoip service is not a 200 code, return false
if resp.StatusCode != 200 {
return false
}
// Read the response
body, err := ioutil.ReadAll(resp.Body)
if err != nil {
log.Fatal(err)
}
// Unmarshal the response to json
var result geoipresult
err = json.Unmarshal(body, &result)
if err != nil {
fmt.Println("JSON ERROR, abort mission!")
log.Fatal(err)
}
// if an entry for the city does not exists yet, create the city
// if the city does allready exist, increase it's value by one
if metrics_city_num[result.City] == 0 {
metrics_city_num[result.City] = 1
} else {
metrics_city_num[result.City] += 1
}
// if the actual city is not known, create the city
// this is used for the grafana worldmap plugin
if (cities[result.City] == location{}) {
newCity := location{
key: strings.ToLower(result.City),
latitude: result.Lat,
longitude: result.Lon,
name: result.City,
}
cities[result.City] = newCity
}
return false
}
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