feat: --generate-only and --offline flags can use keyname. (#9838)

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## Description

Closes: #9837 
ref: #9407

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---

### Author Checklist

*All items are required. Please add a note to the item if the item is not applicable and
please add links to any relevant follow up issues.*

I have...

- [ ] included the correct [type prefix](https://github.com/commitizen/conventional-commit-types/blob/v3.0.0/index.json) in the PR title
- [ ] added `!` to the type prefix if API or client breaking change
- [ ] targeted the correct branch (see [PR Targeting](https://github.com/cosmos/cosmos-sdk/blob/master/CONTRIBUTING.md#pr-targeting))
- [ ] provided a link to the relevant issue or specification
- [ ] followed the guidelines for [building modules](https://github.com/cosmos/cosmos-sdk/blob/master/docs/building-modules)
- [ ] included the necessary unit and integration [tests](https://github.com/cosmos/cosmos-sdk/blob/master/CONTRIBUTING.md#testing)
- [ ] added a changelog entry to `CHANGELOG.md`
- [ ] included comments for [documenting Go code](https://blog.golang.org/godoc)
- [ ] updated the relevant documentation or specification
- [ ] reviewed "Files changed" and left comments if necessary
- [ ] confirmed all CI checks have passed

### Reviewers Checklist

*All items are required. Please add a note if the item is not applicable and please add
your handle next to the items reviewed if you only reviewed selected items.*

I have...

- [ ] confirmed the correct [type prefix](https://github.com/commitizen/conventional-commit-types/blob/v3.0.0/index.json) in the PR title
- [ ] confirmed `!` in the type prefix if API or client breaking change
- [ ] confirmed all author checklist items have been addressed 
- [ ] reviewed state machine logic
- [ ] reviewed API design and naming
- [ ] reviewed documentation is accurate
- [ ] reviewed tests and test coverage
- [ ] manually tested (if applicable)

CHANGELOG.md

@@ -44,6 +44,7 @@ Ref: https://keepachangelog.com/en/1.0.0/
 * [\#9533](https://github.com/cosmos/cosmos-sdk/pull/9533) Added a new gRPC method, `DenomOwners`, in `x/bank` to query for all account holders of a specific denomination.
 * (bank) [\#9618](https://github.com/cosmos/cosmos-sdk/pull/9618) Update bank.Metadata: add URI and URIHash attributes.
 * [\#9750](https://github.com/cosmos/cosmos-sdk/pull/9750) Emit events for tx signature and sequence, so clients can now query txs by signature (`tx.signature='<base64_sig>'`) or by address and sequence combo (`tx.acc_seq='<addr>/<seq>'`).
+* [\#9837](https://github.com/cosmos/cosmos-sdk/issues/9837) `--generate-only` flag will accept the keyname now.
 
 ### API Breaking Changes
 

client/context.go

@@ -11,7 +11,6 @@ import (
 	"gopkg.in/yaml.v2"
 
 	"github.com/gogo/protobuf/proto"
-	"github.com/pkg/errors"
 	rpcclient "github.com/tendermint/tendermint/rpc/client"
 
 	"github.com/cosmos/cosmos-sdk/codec"
@@ -324,15 +323,6 @@ func GetFromFields(kr keyring.Keyring, from string, genOnly bool) (sdk.AccAddres
 		return nil, "", 0, nil
 	}
 
-	if genOnly {
-		addr, err := sdk.AccAddressFromBech32(from)
-		if err != nil {
-			return nil, "", 0, errors.Wrap(err, "must provide a valid Bech32 address in generate-only mode")
-		}
-
-		return addr, "", 0, nil
-	}
-
 	var info keyring.Info
 	if addr, err := sdk.AccAddressFromBech32(from); err == nil {
 		info, err = kr.KeyByAddress(addr)

x/auth/client/testutil/suite.go

@@ -30,6 +30,7 @@ import (
 	"github.com/cosmos/cosmos-sdk/types/tx/signing"
 	authcli "github.com/cosmos/cosmos-sdk/x/auth/client/cli"
 	authtypes "github.com/cosmos/cosmos-sdk/x/auth/types"
+	bank "github.com/cosmos/cosmos-sdk/x/bank/client/cli"
 	bankcli "github.com/cosmos/cosmos-sdk/x/bank/client/testutil"
 	banktypes "github.com/cosmos/cosmos-sdk/x/bank/types"
 )
@@ -108,6 +109,116 @@ func (s *IntegrationTestSuite) TestCLIValidateSignatures() {
 	s.Require().EqualError(err, "signatures validation failed")
 }
 
+func (s *IntegrationTestSuite) TestCLISignGenOnly() {
+	val := s.network.Validators[0]
+	val2 := s.network.Validators[1]
+
+	info, err := val.ClientCtx.Keyring.KeyByAddress(val.Address)
+	s.Require().NoError(err)
+	keyName := info.GetName()
+
+	account, err := val.ClientCtx.AccountRetriever.GetAccount(val.ClientCtx, info.GetAddress())
+	s.Require().NoError(err)
+
+	sendTokens := sdk.NewCoins(sdk.NewCoin(sdk.DefaultBondDenom, sdk.NewInt(10)))
+	args := []string{
+		keyName, // from keyname
+		val2.Address.String(),
+		sendTokens.String(),
+		fmt.Sprintf("--%s=true", flags.FlagGenerateOnly), // shouldn't break if we use keyname with --generate-only flag
+		fmt.Sprintf("--%s=true", flags.FlagSkipConfirmation),
+		fmt.Sprintf("--%s=%s", flags.FlagBroadcastMode, flags.BroadcastBlock),
+	}
+	generatedStd, err := clitestutil.ExecTestCLICmd(val.ClientCtx, bank.NewSendTxCmd(), args)
+	s.Require().NoError(err)
+	opFile := testutil.WriteToNewTempFile(s.T(), generatedStd.String())
+
+	commonArgs := []string{
+		fmt.Sprintf("--%s=%s", flags.FlagKeyringBackend, keyring.BackendTest),
+		fmt.Sprintf("--%s=%s", flags.FlagHome, strings.Replace(val.ClientCtx.HomeDir, "simd", "simcli", 1)),
+		fmt.Sprintf("--%s=%s", flags.FlagChainID, val.ClientCtx.ChainID),
+	}
+
+	cases := []struct {
+		name   string
+		args   []string
+		expErr bool
+		errMsg string
+	}{
+		{
+			"offline mode with account-number, sequence and keyname (valid)",
+			[]string{
+				opFile.Name(),
+				fmt.Sprintf("--%s=true", flags.FlagOffline),
+				fmt.Sprintf("--%s=%s", flags.FlagFrom, keyName),
+				fmt.Sprintf("--%s=%d", flags.FlagAccountNumber, account.GetAccountNumber()),
+				fmt.Sprintf("--%s=%d", flags.FlagSequence, account.GetSequence()),
+			},
+			false,
+			"",
+		},
+		{
+			"offline mode with account-number, sequence and address key (valid)",
+			[]string{
+				opFile.Name(),
+				fmt.Sprintf("--%s=true", flags.FlagOffline),
+				fmt.Sprintf("--%s=%s", flags.FlagFrom, val.Address.String()),
+				fmt.Sprintf("--%s=%d", flags.FlagAccountNumber, account.GetAccountNumber()),
+				fmt.Sprintf("--%s=%d", flags.FlagSequence, account.GetSequence()),
+			},
+			false,
+			"",
+		},
+		{
+			"offline mode without account-number and keyname (invalid)",
+			[]string{
+				opFile.Name(),
+				fmt.Sprintf("--%s=true", flags.FlagOffline),
+				fmt.Sprintf("--%s=%s", flags.FlagFrom, keyName),
+				fmt.Sprintf("--%s=%d", flags.FlagSequence, account.GetSequence()),
+			},
+			true,
+			`required flag(s) "account-number" not set`,
+		},
+		{
+			"offline mode without sequence and keyname (invalid)",
+			[]string{
+				opFile.Name(),
+				fmt.Sprintf("--%s=true", flags.FlagOffline),
+				fmt.Sprintf("--%s=%s", flags.FlagFrom, keyName),
+				fmt.Sprintf("--%s=%d", flags.FlagAccountNumber, account.GetAccountNumber()),
+			},
+			true,
+			`required flag(s) "sequence" not set`,
+		},
+		{
+			"offline mode without account-number, sequence and keyname (invalid)",
+			[]string{
+				opFile.Name(),
+				fmt.Sprintf("--%s=%s", flags.FlagFrom, keyName),
+				fmt.Sprintf("--%s=true", flags.FlagOffline),
+			},
+			true,
+			`required flag(s) "account-number", "sequence" not set`,
+		},
+	}
+
+	for _, tc := range cases {
+		cmd := authcli.GetSignCommand()
+		tmcli.PrepareBaseCmd(cmd, "", "")
+		out, err := clitestutil.ExecTestCLICmd(val.ClientCtx, cmd, append(tc.args, commonArgs...))
+		if tc.expErr {
+			s.Require().Error(err)
+			s.Require().Contains(err.Error(), tc.errMsg)
+		} else {
+			s.Require().NoError(err)
+			signedTx := testutil.WriteToNewTempFile(s.T(), out.String())
+			_, err := TxBroadcastExec(val.ClientCtx, signedTx.Name())
+			s.Require().NoError(err)
+		}
+	}
+}
+
 func (s *IntegrationTestSuite) TestCLISignBatch() {
 	val := s.network.Validators[0]
 	var sendTokens = sdk.NewCoins(