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Fix panic when failing to get DefaultAuthConfig 

Commit f32731f902 fixed a potential panic
when an error was returned while trying to get existing credentials.

However, other code paths currently use the result of `GetDefaultAuthConfig()`
even in an error condition; this resulted in a panic, because a `nil` was
returned.

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
This commit is contained in:
Sebastiaan van Stijn 2021-01-07 13:51:21 +01:00
parent 2291f610ae
commit c2820a7e3b
No known key found for this signature in database
GPG Key ID: 76698F39D527CE8C
2 changed files with 7 additions and 3 deletions
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3
cli/command/registry.go
View File

@ -63,6 +63,9 @@ func RegistryAuthenticationPrivilegedFunc(cli Cli, index *registrytypes.IndexInf
indexServer := registry.GetAuthConfigKey(index)
isDefaultRegistry := indexServer == ElectAuthServer(context.Background(), cli)
authConfig, err := GetDefaultAuthConfig(cli, true, indexServer, isDefaultRegistry)
if authConfig == nil {
authConfig = &types.AuthConfig{}
}
if err != nil {
fmt.Fprintf(cli.Err(), "Unable to retrieve stored credentials for %s, error: %s.\n", indexServer, err)
}

7
cli/command/registry/login.go
View File

@ -111,11 +111,12 @@ func runLogin(dockerCli command.Cli, opts loginOptions) error { //nolint: gocycl
serverAddress = authServer
}
var err error
var authConfig *types.AuthConfig
var response registrytypes.AuthenticateOKBody
isDefaultRegistry := serverAddress == authServer
authConfig, err = command.GetDefaultAuthConfig(dockerCli, opts.user == "" && opts.password == "", serverAddress, isDefaultRegistry)
authConfig, err := command.GetDefaultAuthConfig(dockerCli, opts.user == "" && opts.password == "", serverAddress, isDefaultRegistry)
if authConfig == nil {
authConfig = &types.AuthConfig{}
}
if err == nil && authConfig.Username != "" && authConfig.Password != "" {
response, err = loginWithCredStoreCreds(ctx, dockerCli, authConfig)
}