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Allow wallet passphrases to be environment variables (#5879)

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* Allow wallet passphrases to be environment variables
* Merge branch 'master' into wallet-env-passphrases
* Namespace environment variables and clear them at the end of the test.
* Merge branch 'master' into wallet-env-passphrases
* Merge branch 'master' into wallet-env-passphrases
* Merge branch 'master' into wallet-env-passphrases
* Merge branch 'master' into wallet-env-passphrases
* Merge branch 'master' into wallet-env-passphrases
* Merge branch 'master' into wallet-env-passphrases
* Merge branch 'master' into wallet-env-passphrases
* Merge branch 'master' into wallet-env-passphrases
* Merge branch 'master' into wallet-env-passphrases
This commit is contained in:
Jim McDonald 2020-05-18 23:25:36 +01:00 committed by GitHub
parent 2a1a0ce43f
commit fe7a123bd9
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 85 additions and 0 deletions
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12
validator/keymanager/wallet.go
View File

@ -4,6 +4,7 @@ import (
"encoding/json"
"errors"
"fmt"
"os"
"regexp"
"strings"
@ -55,6 +56,17 @@ func NewWallet(input string) (KeyManager, string, error) {
if len(opts.Passphrases) == 0 {
return nil, walletOptsHelp, errors.New("at least one passphrase is required to decrypt accounts")
}
for i, passphrase := range opts.Passphrases {
if strings.HasPrefix(passphrase, "$") {
envPassphrase := os.Getenv(strings.TrimPrefix(passphrase, "$"))
if envPassphrase != "" {
// N.B. We do not log here if the environment variable is not found, as it is possible that this is actually a
// passphrase that just happens to begin with the '$' character. If this is a missing environment variable it will
// be noticed when the account fails to decrypt.
opts.Passphrases[i] = envPassphrase
}
}
}
km := &Wallet{
accounts: make(map[[48]byte]e2wtypes.Account),

73
validator/keymanager/wallet_test.go
View File

@ -95,3 +95,76 @@ func TestMultiplePassphrases(t *testing.T) {
})
}
}
func TestEnvPassphrases(t *testing.T) {
path := SetupWallet(t)
defer func() {
if err := os.RemoveAll(path); err != nil {
t.Log(err)
}
}()
if err := os.Setenv("TESTENVPASSPHRASES_NEITHER", "neither"); err != nil {
t.Fatalf("Error setting environment variable TESTENVPASSPHRASES_NEITHER: %v", err)
}
defer func() {
if err := os.Unsetenv("TESTENVPASSPHRASES_NEITHER"); err != nil {
t.Fatalf("Error unsetting environment variable TESTENVPASSPHRASES_NEITHER: %v", err)
}
}()
if err := os.Setenv("TESTENVPASSPHRASES_FOO", "foo"); err != nil {
t.Fatalf("Error setting environment variable TESTENVPASSPHRASES_FOO: %v", err)
}
defer func() {
if err := os.Unsetenv("TESTENVPASSPHRASES_FOO"); err != nil {
t.Fatalf("Error unsetting environment variable TESTENVPASSPHRASES_FOO: %v", err)
}
}()
if err := os.Setenv("TESTENVPASSPHRASES_BAR", "bar"); err != nil {
t.Fatalf("Error setting environment variable TESTENVPASSPHRASES_BAR: %v", err)
}
defer func() {
if err := os.Unsetenv("TESTENVPASSPHRASES_BAR"); err != nil {
t.Fatalf("Error unsetting environment variable TESTENVPASSPHRASES_BAR: %v", err)
}
}()
tests := []struct {
name string
wallet keymanager.KeyManager
accounts int
}{
{
name: "Neither",
wallet: wallet(t, fmt.Sprintf(`{"location":%q,"accounts":["Wallet 1"],"passphrases":["$TESTENVPASSPHRASES_NEITHER"]}`, path)),
accounts: 0,
},
{
name: "Foo",
wallet: wallet(t, fmt.Sprintf(`{"location":%q,"accounts":["Wallet 1"],"passphrases":["$TESTENVPASSPHRASES_FOO"]}`, path)),
accounts: 1,
},
{
name: "Bar",
wallet: wallet(t, fmt.Sprintf(`{"location":%q,"accounts":["Wallet 1"],"passphrases":["$TESTENVPASSPHRASES_BAR"]}`, path)),
accounts: 1,
},
{
name: "Both",
wallet: wallet(t, fmt.Sprintf(`{"location":%q,"accounts":["Wallet 1"],"passphrases":["$TESTENVPASSPHRASES_FOO","$TESTENVPASSPHRASES_BAR"]}`, path)),
accounts: 2,
},
}
for _, test := range tests {
t.Run(test.name, func(t *testing.T) {
keys, err := test.wallet.FetchValidatingKeys()
if err != nil {
t.Error(err)
}
if len(keys) != test.accounts {
t.Errorf("Found %d keys; expected %d", len(keys), test.accounts)
}
})
}
}