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// +build windows
package main
import (
"bufio"
"bytes"
"errors"
"fmt"
"io"
"os/exec"
"regexp"
)
// DefaultLib path for the operating system in question
var DefaultLib string = `C:\Program Files (x86)\Steam\steamapps`
// BrowserCommand returns a []string containing the command that will start the
// browser for a given url specific to the OS
func BrowserCommand(url string) []string {
return []string{"cmd", "/c", "start", url}
}
func GetHostIP() string {
s, err := GetHostIPFromRoutes()
if err != nil {
panic(err)
}
return s
}
// GetHostIPFromRoutes is a terrible little function to scrape up the
// information about the route table and return the IP address associated with
// the default route
func GetHostIPFromRoutes() (string, error) {
spaceRe := regexp.MustCompile(" *")
c := exec.Command("route", "print", "-4")
b, err := c.Output()
if err != nil {
return "", err
}
rdr := bufio.NewReader(bytes.NewBuffer(b))
net := false
for {
l, err := rdr.ReadBytes('\n')
if err == io.EOF {
break
} else if err != nil {
return "", err
}
fmt.Println(string(l))
if bytes.HasPrefix(l, []byte("Network Destination")) && !net {
net = true
continue
}
if net && bytes.HasPrefix(l, []byte("=")) {
break
}
if net == false {
continue
}
fmt.Println("Before: ", string(l))
l = spaceRe.ReplaceAll(l, []byte{' '})
l = bytes.TrimPrefix(l, []byte{' '})
fields := bytes.Split(l, []byte(" "))
if len(fields) < 5 {
return "", errors.New("Less than five fields")
}
if bytes.Equal(fields[0], []byte("0.0.0.0")) {
return string(fields[3]), nil
}
}
return "", errors.New("Unable to parse IP from route table")
}
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