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tx_utils.go
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tx_utils.go
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package cli
import (
"bufio"
"crypto/ed25519"
"encoding/base64"
"github.com/cosmos/cosmos-sdk/client"
"github.com/cosmos/cosmos-sdk/client/input"
"github.com/cosmos/cosmos-sdk/crypto/keyring"
sdk "github.com/cosmos/cosmos-sdk/types"
sdkerr "github.com/cosmos/cosmos-sdk/types/errors"
"github.com/spf13/cobra"
)
func setFeePayerFromSigner(ctx *client.Context) error {
if ctx.FromAddress != nil {
ctx.FeePayer = ctx.FromAddress
return nil
}
signerAccAddr, err := accAddrByKeyRef(ctx.Keyring, ctx.From)
if err != nil {
return err
}
ctx.FeePayer = signerAccAddr
return nil
}
func accAddrByKeyRef(keyring keyring.Keyring, keyRef string) (sdk.AccAddress, error) {
// Firstly check if the keyref is a key name of a key registered in a keyring
info, err := keyring.Key(keyRef)
if err == nil {
return info.GetAddress(), nil
}
if !sdkerr.IsOf(err, sdkerr.ErrIO, sdkerr.ErrKeyNotFound) {
return nil, err
}
// Fallback: convert keyref to address
return sdk.AccAddressFromBech32(keyRef)
}
func getVerKey(cmd *cobra.Command, clientCtx client.Context) (ed25519.PrivateKey, error) {
// Try getting from arg
verKeyPrivBase64, err := cmd.Flags().GetString(FlagVerKey)
if err != nil {
return nil, err
}
// Get interactively instead if the flag isn't provided
if verKeyPrivBase64 == "" {
inBuf := bufio.NewReader(clientCtx.Input)
verKeyPrivBase64, err = input.GetString("Enter base64 encoded verification key", inBuf)
if err != nil {
return nil, err
}
}
// Decode key
verKeyPrivBytes, err := base64.StdEncoding.DecodeString(verKeyPrivBase64)
if err != nil {
return nil, err
}
return verKeyPrivBytes, nil
}