package cli import ( "bufio" "encoding/hex" "fmt" "strconv" "strings" "github.com/cosmos/cosmos-sdk/client/context" "github.com/cosmos/cosmos-sdk/client/flags" "github.com/cosmos/cosmos-sdk/codec" sdk "github.com/cosmos/cosmos-sdk/types" "github.com/cosmos/cosmos-sdk/version" "github.com/cosmos/cosmos-sdk/x/auth" "github.com/cosmos/cosmos-sdk/x/auth/client/utils" "github.com/kava-labs/kava/x/bep3/types" "github.com/spf13/cobra" tmtime "github.com/tendermint/tendermint/types/time" ) // GetTxCmd returns the transaction commands for this module func GetTxCmd(cdc *codec.Codec) *cobra.Command { bep3TxCmd := &cobra.Command{ Use: "bep3", Short: "bep3 transactions subcommands", } bep3TxCmd.AddCommand(flags.PostCommands( GetCmdCreateAtomicSwap(cdc), GetCmdClaimAtomicSwap(cdc), GetCmdRefundAtomicSwap(cdc), )...) return bep3TxCmd } // GetCmdCreateAtomicSwap cli command for creating atomic swaps func GetCmdCreateAtomicSwap(cdc *codec.Codec) *cobra.Command { return &cobra.Command{ Use: "create [to] [recipient-other-chain] [sender-other-chain] [timestamp] [coins] [expected-income] [height-span] [cross-chain]", Short: "create a new atomic swap", Example: fmt.Sprintf("%s tx %s create kava1xy7hrjy9r0algz9w3gzm8u6mrpq97kwta747gj bnb1urfermcg92dwq36572cx4xg84wpk3lfpksr5g7 bnb1uky3me9ggqypmrsvxk7ur6hqkzq7zmv4ed4ng7 now 100bnb 100bnb 360 true --from validator", version.ClientName, types.ModuleName), Args: cobra.ExactArgs(8), RunE: func(cmd *cobra.Command, args []string) error { inBuf := bufio.NewReader(cmd.InOrStdin()) cliCtx := context.NewCLIContext().WithCodec(cdc) txBldr := auth.NewTxBuilderFromCLI(inBuf).WithTxEncoder(utils.GetTxEncoder(cdc)) from := cliCtx.GetFromAddress() // same as KavaExecutor.DeputyAddress (for cross-chain) to, err := sdk.AccAddressFromBech32(args[0]) if err != nil { return err } recipientOtherChain := args[1] // same as OtherExecutor.DeputyAddress senderOtherChain := args[2] // Timestamp defaults to time.Now() unless it's explicitly set var timestamp int64 if strings.Compare(args[3], "now") == 0 { timestamp = tmtime.Now().Unix() } else { timestamp, err = strconv.ParseInt(args[3], 10, 64) if err != nil { return err } } // Generate cryptographically strong pseudo-random number randomNumber, err := types.GenerateSecureRandomNumber() if err != nil { return err } randomNumberHash := types.CalculateRandomHash(randomNumber.Bytes(), timestamp) // Print random number, timestamp, and hash to user's console fmt.Printf("\nRandom number: %s\n", hex.EncodeToString(randomNumber.Bytes())) fmt.Printf("Timestamp: %d\n", timestamp) fmt.Printf("Random number hash: %s\n\n", hex.EncodeToString(randomNumberHash)) coins, err := sdk.ParseCoins(args[4]) if err != nil { return err } expectedIncome := args[5] heightSpan, err := strconv.ParseInt(args[6], 10, 64) if err != nil { return err } crossChain, err := strconv.ParseBool(args[7]) if err != nil { return err } msg := types.NewMsgCreateAtomicSwap( from, to, recipientOtherChain, senderOtherChain, randomNumberHash, timestamp, coins, expectedIncome, heightSpan, crossChain, ) err = msg.ValidateBasic() if err != nil { return err } return utils.GenerateOrBroadcastMsgs(cliCtx, txBldr, []sdk.Msg{msg}) }, } } // GetCmdClaimAtomicSwap cli command for claiming an atomic swap func GetCmdClaimAtomicSwap(cdc *codec.Codec) *cobra.Command { return &cobra.Command{ Use: "claim [swap-id] [random-number]", Short: "claim coins in an atomic swap using the secret number", Example: fmt.Sprintf("%s tx %s claim 6682c03cc3856879c8fb98c9733c6b0c30758299138166b6523fe94628b1d3af 56f13e6a5cd397447f8b5f8c82fdb5bbf56127db75269f5cc14e50acd8ac9a4c --from accA", version.ClientName, types.ModuleName), Args: cobra.ExactArgs(2), RunE: func(cmd *cobra.Command, args []string) error { inBuf := bufio.NewReader(cmd.InOrStdin()) cliCtx := context.NewCLIContext().WithCodec(cdc) txBldr := auth.NewTxBuilderFromCLI(inBuf).WithTxEncoder(utils.GetTxEncoder(cdc)) from := cliCtx.GetFromAddress() swapID, err := types.HexToBytes(args[0]) if err != nil { return err } if len(strings.TrimSpace(args[1])) == 0 { return fmt.Errorf("random-number cannot be empty") } randomNumber, err := types.HexToBytes(args[1]) if err != nil { return err } msg := types.NewMsgClaimAtomicSwap(from, swapID, randomNumber) err = msg.ValidateBasic() if err != nil { return err } return utils.GenerateOrBroadcastMsgs(cliCtx, txBldr, []sdk.Msg{msg}) }, } } // GetCmdRefundAtomicSwap cli command for claiming an atomic swap func GetCmdRefundAtomicSwap(cdc *codec.Codec) *cobra.Command { return &cobra.Command{ Use: "refund [swap-id]", Short: "refund the coins in an atomic swap", Example: fmt.Sprintf("%s tx %s refund 6682c03cc3856879c8fb98c9733c6b0c30758299138166b6523fe94628b1d3af --from accA", version.ClientName, types.ModuleName), Args: cobra.ExactArgs(1), RunE: func(cmd *cobra.Command, args []string) error { inBuf := bufio.NewReader(cmd.InOrStdin()) cliCtx := context.NewCLIContext().WithCodec(cdc) txBldr := auth.NewTxBuilderFromCLI(inBuf).WithTxEncoder(utils.GetTxEncoder(cdc)) from := cliCtx.GetFromAddress() swapID, err := types.HexToBytes(args[0]) if err != nil { return err } msg := types.NewMsgRefundAtomicSwap(from, swapID) err = msg.ValidateBasic() if err != nil { return err } return utils.GenerateOrBroadcastMsgs(cliCtx, txBldr, []sdk.Msg{msg}) }, } }