Example #1
0
// indexScriptPubKey indexes all data pushes greater than 8 bytes within the
// passed SPK. Our "address" index is actually a hash160 index, where in the
// ideal case the data push is either the hash160 of a publicKey (P2PKH) or
// a Script (P2SH).
func indexScriptPubKey(addrIndex database.BlockAddrIndex, scriptPubKey []byte,
	locInBlock *wire.TxLoc) error {
	dataPushes, err := txscript.PushedData(scriptPubKey)
	if err != nil {
		adxrLog.Tracef("Couldn't get pushes: %v", err)
		return err
	}

	for _, data := range dataPushes {
		// Only index pushes greater than 8 bytes.
		if len(data) < 8 {
			continue
		}

		var indexKey [ripemd160.Size]byte
		// A perfect little hash160.
		if len(data) <= 20 {
			copy(indexKey[:], data)
			// Otherwise, could be a payToPubKey or an OP_RETURN, so we'll
			// make a hash160 out of it.
		} else {
			copy(indexKey[:], btcutil.Hash160(data))
		}

		addrIndex[indexKey] = append(addrIndex[indexKey], locInBlock)
	}
	return nil
}
Example #2
0
// TestPushedData ensured the PushedData function extracts the expected data out
// of various scripts.
func TestPushedData(t *testing.T) {
	t.Parallel()

	var tests = []struct {
		script string
		out    [][]byte
		valid  bool
	}{
		{
			"0 IF 0 ELSE 2 ENDIF",
			[][]byte{nil, nil},
			true,
		},
		{
			"16777216 10000000",
			[][]byte{
				{0x00, 0x00, 0x00, 0x01}, // 16777216
				{0x80, 0x96, 0x98, 0x00}, // 10000000
			},
			true,
		},
		{
			"DUP HASH160 '17VZNX1SN5NtKa8UQFxwQbFeFc3iqRYhem' EQUALVERIFY CHECKSIG",
			[][]byte{
				// 17VZNX1SN5NtKa8UQFxwQbFeFc3iqRYhem
				{
					0x31, 0x37, 0x56, 0x5a, 0x4e, 0x58, 0x31, 0x53, 0x4e, 0x35,
					0x4e, 0x74, 0x4b, 0x61, 0x38, 0x55, 0x51, 0x46, 0x78, 0x77,
					0x51, 0x62, 0x46, 0x65, 0x46, 0x63, 0x33, 0x69, 0x71, 0x52,
					0x59, 0x68, 0x65, 0x6d,
				},
			},
			true,
		},
		{
			"PUSHDATA4 1000 EQUAL",
			nil,
			false,
		},
	}

	for i, test := range tests {
		script := mustParseShortForm(test.script)
		data, err := txscript.PushedData(script)
		if test.valid && err != nil {
			t.Errorf("TestPushedData failed test #%d: %v\n", i, err)
			continue
		} else if !test.valid && err == nil {
			t.Errorf("TestPushedData failed test #%d: test should "+
				"be invalid\n", i)
			continue
		}
		if !reflect.DeepEqual(data, test.out) {
			t.Errorf("TestPushedData failed test #%d: want: %x "+
				"got: %x\n", i, test.out, data)
		}
	}
}