e6a8a4df55
* Add sign CLI command to sign transactions generated with the --generate-only flag. * Add /sign REST endpoint for Voyager support. Redirect password prompt to STDERR to avoid messing up cli commands output. As a rule of thumb, program's output should always go to STDOUT, whilst errors&diagnostics go to STDERR as per POSIX's philosophy and specs.
92 lines
2.5 KiB
Go
92 lines
2.5 KiB
Go
package cli
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import (
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"fmt"
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"io/ioutil"
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"github.com/spf13/viper"
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"github.com/cosmos/cosmos-sdk/client"
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"github.com/cosmos/cosmos-sdk/client/context"
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"github.com/cosmos/cosmos-sdk/client/utils"
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sdk "github.com/cosmos/cosmos-sdk/types"
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"github.com/cosmos/cosmos-sdk/x/auth"
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authctx "github.com/cosmos/cosmos-sdk/x/auth/client/context"
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"github.com/spf13/cobra"
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amino "github.com/tendermint/go-amino"
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)
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const (
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flagAppend = "append"
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flagPrintSigs = "print-sigs"
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)
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// GetSignCommand returns the sign command
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func GetSignCommand(codec *amino.Codec, decoder auth.AccountDecoder) *cobra.Command {
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cmd := &cobra.Command{
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Use: "sign <file>",
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Short: "Sign transactions",
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Long: `Sign transactions created with the --generate-only flag.
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Read a transaction from <file>, sign it, and print its JSON encoding.`,
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RunE: makeSignCmd(codec, decoder),
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Args: cobra.ExactArgs(1),
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}
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cmd.Flags().String(client.FlagName, "", "Name of private key with which to sign")
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cmd.Flags().Bool(flagAppend, true, "Append the signature to the existing ones. If disabled, old signatures would be overwritten")
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cmd.Flags().Bool(flagPrintSigs, false, "Print the addresses that must sign the transaction and those who have already signed it, then exit")
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return cmd
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}
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func makeSignCmd(cdc *amino.Codec, decoder auth.AccountDecoder) func(cmd *cobra.Command, args []string) error {
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return func(cmd *cobra.Command, args []string) (err error) {
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stdTx, err := readAndUnmarshalStdTx(cdc, args[0])
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if err != nil {
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return
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}
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if viper.GetBool(flagPrintSigs) {
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printSignatures(stdTx)
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return nil
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}
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name := viper.GetString(client.FlagName)
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cliCtx := context.NewCLIContext().WithCodec(cdc).WithAccountDecoder(decoder)
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txCtx := authctx.NewTxContextFromCLI()
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newTx, err := utils.SignStdTx(txCtx, cliCtx, name, stdTx, viper.GetBool(flagAppend))
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if err != nil {
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return err
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}
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json, err := cdc.MarshalJSON(newTx)
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if err != nil {
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return err
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}
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fmt.Printf("%s\n", json)
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return
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}
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}
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func printSignatures(stdTx auth.StdTx) {
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fmt.Println("Signers:")
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for i, signer := range stdTx.GetSigners() {
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fmt.Printf(" %v: %v\n", i, signer.String())
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}
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fmt.Println("")
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fmt.Println("Signatures:")
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for i, sig := range stdTx.GetSignatures() {
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fmt.Printf(" %v: %v\n", i, sdk.AccAddress(sig.Address()).String())
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}
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return
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}
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func readAndUnmarshalStdTx(cdc *amino.Codec, filename string) (stdTx auth.StdTx, err error) {
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var bytes []byte
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if bytes, err = ioutil.ReadFile(filename); err != nil {
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return
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}
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if err = cdc.UnmarshalJSON(bytes, &stdTx); err != nil {
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return
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}
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return
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}
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