58 lines
1.9 KiB
Go
58 lines
1.9 KiB
Go
package lbrycrd
|
|
|
|
import (
|
|
"encoding/hex"
|
|
|
|
"github.com/lbryio/lbry.go/v2/extras/errors"
|
|
|
|
"github.com/btcsuite/btcd/chaincfg"
|
|
"github.com/btcsuite/btcutil"
|
|
"github.com/btcsuite/btcutil/base58"
|
|
"golang.org/x/crypto/ripemd160"
|
|
)
|
|
|
|
// DecodeAddress decodes the string encoding of an address and returns
|
|
// the Address if addr is a valid encoding for a known address type.
|
|
//
|
|
// The bitcoin network the address is associated with is extracted if possible.
|
|
// When the address does not encode the network, such as in the case of a raw
|
|
// public key, the address will be associated with the passed defaultNet.
|
|
func DecodeAddress(addr string, defaultNet *chaincfg.Params) (btcutil.Address, error) {
|
|
// Serialized public keys are either 65 bytes (130 hex chars) if
|
|
// uncompressed/hybrid or 33 bytes (66 hex chars) if compressed.
|
|
if len(addr) == 130 || len(addr) == 66 {
|
|
serializedPubKey, err := hex.DecodeString(addr)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return btcutil.NewAddressPubKey(serializedPubKey, defaultNet)
|
|
}
|
|
|
|
// Switch on decoded length to determine the type.
|
|
decoded, netID, err := base58.CheckDecode(addr)
|
|
if err != nil {
|
|
if err == base58.ErrChecksum {
|
|
return nil, btcutil.ErrChecksumMismatch
|
|
}
|
|
return nil, errors.Err("decoded address[%s] is of unknown format even with default chainparams[%s]", addr, defaultNet.Name)
|
|
}
|
|
|
|
switch len(decoded) {
|
|
case ripemd160.Size: // P2PKH or P2SH
|
|
isP2PKH := chaincfg.IsPubKeyHashAddrID(netID)
|
|
isP2SH := chaincfg.IsScriptHashAddrID(netID)
|
|
switch hash160 := decoded; {
|
|
case isP2PKH && isP2SH:
|
|
return nil, btcutil.ErrAddressCollision
|
|
case isP2PKH:
|
|
return btcutil.NewAddressPubKeyHash(hash160, &chaincfg.Params{PubKeyHashAddrID: netID})
|
|
case isP2SH:
|
|
return btcutil.NewAddressScriptHashFromHash(hash160, &chaincfg.Params{ScriptHashAddrID: netID})
|
|
default:
|
|
return nil, btcutil.ErrUnknownAddressType
|
|
}
|
|
|
|
default:
|
|
return nil, errors.Err("decoded address is of unknown size")
|
|
}
|
|
}
|