Quick script to create a magnet link out of an infohash, e.g. for use together with aria2c. Usage: commandname invokedcommand infohash [name [tracker1 [tracker2]]] ...

infohash.go

package main

import (
        "fmt"
        "os"
        "os/exec"
        "strings"
        "net/url"
)

func main() {
        var infohash, name, command string
        trackers := "udp%3A%2F%2Ftracker.openbittorrent.com%3A80&tr=udp%3A%2F%2Fopentor.org%3A2710&tr=udp%3A%2F%2Ftracker.ccc.de%3A80&tr=udp%3A%2F%2Ftracker.blackunicorn.xyz%3A6969&tr=udp%3A%2F%2Ftracker.coppersurfer.tk%3A6969&tr=udp%3A%2F%2Ftracker.leechers-paradise.org%3A6969"
        if len(os.Args) > 4 {
                trackersl := os.Args[4:]
                for i, v := range trackersl {
                        trackersl[i] = url.QueryEscape(v)
                }
                trackers = strings.Join(trackersl, "&tr=")
        }
        if len(os.Args) > 3 {
                name = os.Args[3]
        }
        if len(os.Args) > 2 {
                command = os.Args[1]
                infohash = os.Args[2]
        } else if len(os.Args) > 1 {
                infohash = os.Args[1]
        }
        link := fmt.Sprintf("magnet:?xt=urn:btih:%s&dn=%s&tr=%s", infohash, name, trackers)
        fmt.Println(link)
        if command != "" {
                c := exec.Command(command, link)
                c.Stdout = os.Stdout
                c.Stderr = os.Stderr
                err := c.Start()
                if err != nil {panic(err)}
                fmt.Println(c.Wait())
        }
}