/
get_ip.go
65 lines (49 loc) · 1.54 KB
/
get_ip.go
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package main
import (
"bytes"
"fmt"
"log"
"net"
"os"
"net/http"
m "github.com/keighl/mandrill"
)
func main() {
var buffer bytes.Buffer
// noop favicon request otherwise duplicate emails
http.HandleFunc("/favicon.ico", noop)
http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
ifaces, _ := net.Interfaces()
for _, i := range ifaces {
addrs, _ := i.Addrs()
for _, addr := range addrs {
var ip net.IP
switch v := addr.(type) {
case *net.IPNet:
ip = v.IP
case *net.IPAddr:
ip = v.IP
}
buffer.WriteString(ip.String() + " ")
}
}
// Add `x-forwarded-for` header because Heroku returns a private IP
buffer.WriteString(" " + r.Header.Get("x-forwarded-for"))
var str = fmt.Sprintf("The IP address is: %s ", buffer.String())
emailResults(str)
http.Redirect(w, r, os.Getenv("REDIRECT"), http.StatusFound)
})
log.Fatal(http.ListenAndServe(":" + os.Getenv("PORT"), nil))
}
func noop(http.ResponseWriter, *http.Request) {}
func emailResults(s string) {
log.Print(s)
client := m.ClientWithKey(os.Getenv("MANDRILL"))
message := &m.Message{}
message.AddRecipient(os.Getenv("EMAIL"), "", "to")
message.FromEmail = os.Getenv("EMAIL")
message.FromName = "Go Get IP"
message.Subject = "IP address"
message.Text = s
client.MessagesSend(message)
}