295ec3700a
If the key can't be fetched, an error is always returned, so it makes sense to fail the whole command inside of a `key.Get*()`. Signed-off-by: Evgenii Stratonikov <evgeniy@nspcc.ru>
87 lines
2.2 KiB
Go
87 lines
2.2 KiB
Go
package key
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import (
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"crypto/ecdsa"
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"errors"
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"fmt"
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"os"
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"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
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"github.com/nspcc-dev/neo-go/pkg/wallet"
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"github.com/nspcc-dev/neofs-node/cmd/neofs-cli/internal/common"
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"github.com/nspcc-dev/neofs-node/cmd/neofs-cli/internal/commonflags"
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"github.com/spf13/cobra"
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"github.com/spf13/viper"
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)
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var errCantGenerateKey = errors.New("can't generate new private key")
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// Get returns private key from the following sources:
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// 1. WIF
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// 2. Raw binary key
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// 3. Wallet file
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// 4. NEP-2 encrypted WIF.
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// Ideally we want to touch file-system on the last step.
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// However, asking for NEP-2 password seems to be confusing if we provide a wallet.
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// This function assumes that all flags were bind to viper in a `PersistentPreRun`.
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func Get(cmd *cobra.Command) *ecdsa.PrivateKey {
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pk, err := get()
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common.ExitOnErr(cmd, "can't fetch private key: %w", err)
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return pk
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}
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func get() (*ecdsa.PrivateKey, error) {
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keyDesc := viper.GetString(commonflags.WalletPath)
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priv, err := keys.NewPrivateKeyFromWIF(keyDesc)
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if err == nil {
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return &priv.PrivateKey, nil
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}
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p, err := getKeyFromFile(keyDesc)
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if err == nil {
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return p, nil
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}
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w, err := wallet.NewWalletFromFile(keyDesc)
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if err == nil {
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return FromWallet(w, viper.GetString(commonflags.Account))
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}
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if len(keyDesc) == nep2Base58Length {
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return FromNEP2(keyDesc)
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}
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return nil, ErrInvalidKey
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}
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// GetOrGenerate is similar to get but generates a new key if commonflags.GenerateKey is set.
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func GetOrGenerate(cmd *cobra.Command) *ecdsa.PrivateKey {
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pk, err := getOrGenerate()
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common.ExitOnErr(cmd, "can't fetch private key: %w", err)
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return pk
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}
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func getOrGenerate() (*ecdsa.PrivateKey, error) {
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if viper.GetBool(commonflags.GenerateKey) {
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priv, err := keys.NewPrivateKey()
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if err != nil {
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return nil, fmt.Errorf("%w: %v", errCantGenerateKey, err)
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}
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return &priv.PrivateKey, nil
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}
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return get()
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}
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func getKeyFromFile(keyPath string) (*ecdsa.PrivateKey, error) {
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data, err := os.ReadFile(keyPath)
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if err != nil {
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return nil, fmt.Errorf("%w: %v", ErrInvalidKey, err)
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}
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priv, err := keys.NewPrivateKeyFromBytes(data)
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if err != nil {
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return nil, fmt.Errorf("%w: %v", ErrInvalidKey, err)
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}
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return &priv.PrivateKey, nil
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}
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