Beispiel #1
0
func FuzzParseTimestamp(data []byte) int {
	_, err := pq.ParseTimestamp(nil, string(data))
	if err != nil {
		return 0
	}
	return 1
}
Beispiel #2
0
// parseTs parses timestamps in any of the formats that Postgres accepts over
// the wire protocol.
//
// Postgres is lenient in what it accepts as a timestamp, so we must also be
// lenient. As new drivers are used with CockroachDB and formats are found that
// we don't support but Postgres does, add them here. Then create an integration
// test for the driver and add a case to TestParseTs.
func parseTs(str string) (time.Time, error) {
	// RFC3339Nano is sent by github.com/lib/pq (go).
	if ts, err := time.Parse(time.RFC3339Nano, str); err == nil {
		return ts, nil
	}

	// pq.ParseTimestamp parses the timestamp format that both Postgres and
	// CockroachDB send in responses, so this allows roundtripping of the encoded
	// timestamps that we send.
	return pq.ParseTimestamp(nil, str)
}
Beispiel #3
0
// decodeOidDatum decodes bytes with specified Oid and format code into
// a datum.
func decodeOidDatum(id oid.Oid, code formatCode, b []byte) (parser.Datum, error) {
	var d parser.Datum
	switch id {
	case oid.T_bool:
		switch code {
		case formatText:
			v, err := strconv.ParseBool(string(b))
			if err != nil {
				return d, err
			}
			d = parser.DBool(v)
		default:
			return d, fmt.Errorf("unsupported bool format code: %d", code)
		}
	case oid.T_int2:
		switch code {
		case formatText:
			i, err := strconv.ParseInt(string(b), 10, 64)
			if err != nil {
				return d, err
			}
			d = parser.DInt(i)
		case formatBinary:
			var i int16
			err := binary.Read(bytes.NewReader(b), binary.BigEndian, &i)
			if err != nil {
				return d, err
			}
			d = parser.DInt(i)
		default:
			return d, fmt.Errorf("unsupported int2 format code: %d", code)
		}
	case oid.T_int4:
		switch code {
		case formatText:
			i, err := strconv.ParseInt(string(b), 10, 64)
			if err != nil {
				return d, err
			}
			d = parser.DInt(i)
		case formatBinary:
			var i int32
			err := binary.Read(bytes.NewReader(b), binary.BigEndian, &i)
			if err != nil {
				return d, err
			}
			d = parser.DInt(i)
		default:
			return d, fmt.Errorf("unsupported int4 format code: %d", code)
		}
	case oid.T_int8:
		switch code {
		case formatText:
			i, err := strconv.ParseInt(string(b), 10, 64)
			if err != nil {
				return d, err
			}
			d = parser.DInt(i)
		case formatBinary:
			var i int64
			err := binary.Read(bytes.NewReader(b), binary.BigEndian, &i)
			if err != nil {
				return d, err
			}
			d = parser.DInt(i)
		default:
			return d, fmt.Errorf("unsupported int8 format code: %d", code)
		}
	case oid.T_float4:
		switch code {
		case formatText:
			f, err := strconv.ParseFloat(string(b), 64)
			if err != nil {
				return d, err
			}
			d = parser.DFloat(f)
		case formatBinary:
			var f float32
			err := binary.Read(bytes.NewReader(b), binary.BigEndian, &f)
			if err != nil {
				return d, err
			}
			d = parser.DFloat(f)
		default:
			return d, fmt.Errorf("unsupported float4 format code: %d", code)
		}
	case oid.T_float8:
		switch code {
		case formatText:
			f, err := strconv.ParseFloat(string(b), 64)
			if err != nil {
				return d, err
			}
			d = parser.DFloat(f)
		case formatBinary:
			var f float64
			err := binary.Read(bytes.NewReader(b), binary.BigEndian, &f)
			if err != nil {
				return d, err
			}
			d = parser.DFloat(f)
		default:
			return d, fmt.Errorf("unsupported float8 format code: %d", code)
		}
	case oid.T_numeric:
		switch code {
		case formatText:
			dd := &parser.DDecimal{}
			if _, ok := dd.SetString(string(b)); !ok {
				return nil, fmt.Errorf("could not parse string %q as decimal", b)
			}
			d = dd
		default:
			return d, fmt.Errorf("unsupported numeric format code: %d", code)
		}
	case oid.T_text, oid.T_varchar:
		switch code {
		case formatText:
			d = parser.DString(b)
		default:
			return d, fmt.Errorf("unsupported text format code: %d", code)
		}
	case oid.T_bytea:
		switch code {
		case formatText:
			// http://www.postgresql.org/docs/current/static/datatype-binary.html#AEN5667
			// Code cribbed from github.com/lib/pq.

			// We only support hex encoding.
			if len(b) >= 2 && bytes.Equal(b[:2], []byte("\\x")) {
				b = b[2:] // trim off leading "\\x"
				result := make([]byte, hex.DecodedLen(len(b)))
				_, err := hex.Decode(result, b)
				if err != nil {
					return d, err
				}
				d = parser.DBytes(result)
			} else {
				return d, fmt.Errorf("unsupported bytea encoding: %q", b)
			}
		case formatBinary:
			d = parser.DBytes(b)
		default:
			return d, fmt.Errorf("unsupported bytea format code: %d", code)
		}
	case oid.T_timestamp:
		switch code {
		case formatText:
			ts, err := pq.ParseTimestamp(nil, string(b))
			if err != nil {
				return d, fmt.Errorf("could not parse string %q as timestamp", b)
			}
			d = parser.DTimestamp{Time: ts}
		case formatBinary:
			return d, fmt.Errorf("unsupported timestamp format code: %d", code)
		}
	case oid.T_date:
		switch code {
		case formatText:
			ts, err := pq.ParseTimestamp(nil, string(b))
			if err != nil {
				return d, fmt.Errorf("could not parse string %q as date", b)
			}
			daysSinceEpoch := ts.Unix() / secondsInDay
			d = parser.DDate(daysSinceEpoch)
		case formatBinary:
			return d, fmt.Errorf("unsupported date format code: %d", code)
		}
	default:
		return d, fmt.Errorf("unsupported OID: %v", id)
	}
	return d, nil
}