waku-org/go-multiaddr
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Start attempting to support base32 for Encrypted Leaseset Version 2, aka base33. Not likely to work yet.

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This commit is contained in:
idk 2019-03-28 23:00:48 -04:00
parent ce21123d51
commit 056263f8b9
1 changed files with 39 additions and 2 deletions
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41
transcoders.go
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@ -212,7 +212,7 @@ func onion3BtS(b []byte) (string, error) {
return str, nil
}
var TranscoderGarlic64 = NewTranscoderFromFunctions(garlic64StB, garlic64BtS, garlicValidate)
var TranscoderGarlic64 = NewTranscoderFromFunctions(garlic64StB, garlic64BtS, garlic64Validate)
// i2p uses an alternate character set for base64 addresses. This returns an appropriate encoder.
var garlicBase64Encoding = base64.NewEncoding("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-~")
@ -238,13 +238,50 @@ func garlic64BtS(b []byte) (string, error) {
return addr, nil
}
func garlicValidate(b []byte) error {
func garlic64Validate(b []byte) error {
if len(b) < 386 {
return fmt.Errorf("failed to validate garlic addr: %s not an i2p base64 address. len: %d\n", b, len(b))
}
return nil
}
var TranscoderGarlic32 = NewTranscoderFromFunctions(garlic32StB, garlic32BtS, garlic32Validate)
var garlicBase32Encoding = base32.NewEncoding("abcdefghijklmnopqrstuvwxyz234567")
func garlic32StB(s string) ([]byte, error) {
// garlic address without the ".b32.i2p" substring, with padding
if len(s) != 52 || len(s) < 55 || len(s) > 63 {
return nil, fmt.Errorf("failed to parse garlic addr: %s not a i2p base32 address. len: %d", s, len(s))
}
garlicHostBytes := make([]byte, 37)
_, err := garlicBase32Encoding.Decode(garlicHostBytes, []byte(s))
if err != nil {
return nil, fmt.Errorf("failed to decode base32 garlic addr: %s %s", s, err)
}
bytes := []byte{}
bytes = append(bytes, garlicHostBytes...)
return bytes, nil
}
func garlic32BtS(b []byte) (string, error) {
if len(b) < 33 || len(b) > 37 {
return "", fmt.Errorf("failed to validate garlic addr: %s not an i2p base64 address. len: %d\n", b, len(b))
}
addr := strings.Replace(strings.ToLower(garlicBase32Encoding.EncodeToString(b)), "=", "", -1)
return addr, nil
}
func garlic32Validate(b []byte) error {
if len(b) < 33 || len(b) > 37 {
return fmt.Errorf("failed to validate garlic addr: %s not an i2p base64 address. len: %d\n", b, len(b))
}
return nil
}
var TranscoderP2P = NewTranscoderFromFunctions(p2pStB, p2pBtS, p2pVal)
func p2pStB(s string) ([]byte, error) {