fixed db operations

api/gateway/tron/shared/tron_addr.go

@@ -0,0 +1,52 @@
+package shared
+
+import (
+	"bytes"
+	"crypto/sha256"
+	"encoding/hex"
+	"fmt"
+	"strings"
+
+	"github.com/shengdoushi/base58"
+	"github.com/tech/sendico/pkg/merrors"
+)
+
+func TronBase58ToHex(addr string) (string, error) {
+	const (
+		tronAddrLen = 25
+		tronPrefix  = byte(0x41)
+	)
+
+	raw, err := base58.Decode(strings.TrimSpace(addr), base58.BitcoinAlphabet)
+	if err != nil {
+		return "", merrors.InvalidArgument(
+			fmt.Sprintf("tron address: base58 decode failed: %s", err.Error()),
+		)
+	}
+
+	if len(raw) != tronAddrLen {
+		return "", merrors.DataConflict(
+			fmt.Sprintf("tron address: invalid length %d", len(raw)),
+		)
+	}
+
+	// 21 байт: prefix + 20 байт EVM
+	payload := raw[:21]
+	checksum := raw[21:]
+
+	if payload[0] != tronPrefix {
+		return "", merrors.DataConflict("tron address: invalid prefix")
+	}
+
+	// validate checksum (double sha256)
+	h1 := sha256.Sum256(payload)
+	h2 := sha256.Sum256(h1[:])
+	expectedChecksum := h2[:4]
+
+	if !bytes.Equal(expectedChecksum, checksum) {
+		return "", merrors.DataConflict("tron address: invalid checksum")
+	}
+
+	evm := payload[1:]
+	return "0x" + hex.EncodeToString(evm), nil
+}