Exemplo n.º 1
0
func main() {

	var Usage = func() {
		fmt.Fprintf(os.Stderr,
			"Mozilla InvestiGator Action Generator\n"+
				"usage: %s -k=<key id> (-i <input file)\n\n"+
				"Command line to generate and sign MIG Actions.\n"+
				"The resulting actions are display on stdout.\n\n"+
				"Options:\n",
			os.Args[0])
		flag.PrintDefaults()
	}

	// command line options
	var key = flag.String("k", "key identifier", "Key identifier used to sign the action (ex: B75C2346)")
	var pretty = flag.Bool("p", false, "Print signed action in pretty JSON format")
	var urlencode = flag.Bool("urlencode", false, "URL Encode marshalled JSON before output")
	var posturl = flag.String("posturl", "", "POST action to <url> (enforces urlencode)")
	var file = flag.String("i", "/path/to/file", "Load action from file")
	var validfrom = flag.String("validfrom", "now", "(optional) set an ISO8601 date the action will be valid from. If unset, use 'now'.")
	var expireafter = flag.String("expireafter", "30m", "(optional) set a validity duration for the action. If unset, use '30m'.")
	flag.Parse()

	// We need a key, if none is set on the command line, fail
	if *key == "key identifier" {
		Usage()
		os.Exit(-1)
	}

	var a mig.Action
	var err error

	// if a file is defined, load action from that
	if *file != "/path/to/file" {
		a, err = mig.ActionFromFile(*file)
	} else {
		// otherwise, use interactive mode
		a, err = getActionFromTerminal()
	}
	if err != nil {
		panic(err)
	}

	// set the dates
	if *validfrom == "now" {
		a.ValidFrom = time.Now().UTC()
	} else {
		a.ValidFrom, err = time.Parse("2014-01-01T00:00:00.0Z", *validfrom)
		if err != nil {
			panic(err)
		}
	}
	period, err := time.ParseDuration(*expireafter)
	if err != nil {
		log.Fatal(err)
	}
	a.ExpireAfter = a.ValidFrom.Add(period)

	// compute the signature
	str, err := a.String()
	if err != nil {
		panic(err)
	}
	a.PGPSignature, err = sign.Sign(str, *key)
	if err != nil {
		panic(err)
	}

	a.PGPSignatureDate = time.Now().UTC()

	var jsonAction []byte
	if *pretty {
		jsonAction, err = json.MarshalIndent(a, "", "\t")
	} else {
		jsonAction, err = json.Marshal(a)
	}
	if err != nil {
		panic(err)
	}

	// if asked, url encode the action before marshaling it
	actionstr := string(jsonAction)
	if *urlencode {
		strJsonAction := string(jsonAction)
		actionstr = url.QueryEscape(strJsonAction)
	}

	if *posturl != "" {
		resp, err := http.PostForm(*posturl, url.Values{"action": {actionstr}})
		if err != nil {
			panic(err)
		}
		var buf [512]byte
		reader := resp.Body
		for {
			n, err := reader.Read(buf[0:])
			if err != nil {
				os.Exit(0)
			}
			fmt.Print(string(buf[0:n]))
		}
	}
	// find keyring in default location
	u, err := user.Current()
	if err != nil {
		panic(err)
	}

	// load keyring
	var gnupghome string
	gnupghome = os.Getenv("GNUPGHOME")
	if gnupghome == "" {
		gnupghome = "/.gnupg"
	}
	keyring, err := os.Open(u.HomeDir + gnupghome + "/pubring.gpg")
	if err != nil {
		panic(err)
	}
	defer keyring.Close()

	// syntax checking
	err = a.Validate()
	if err != nil {
		panic(err)
	}

	// syntax checking
	err = a.VerifySignature(keyring)
	if err != nil {
		panic(err)
	}
}