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[CLOUDTRUST-5142] Retrieve tokens from a client ID/secret
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,85 @@ | ||
| package toolbox | ||
|
|
||
| import ( | ||
| "context" | ||
| "fmt" | ||
| "strings" | ||
|
|
||
| errorhandler "github.com/cloudtrust/common-service/v2/errors" | ||
| "github.com/cloudtrust/keycloak-client/v2" | ||
| "golang.org/x/oauth2" | ||
| "golang.org/x/oauth2/clientcredentials" | ||
| ) | ||
|
|
||
| // OAuth2Config struct | ||
| type OAuth2Config struct { | ||
| Realm *string `mapstructure:"realm"` | ||
| Username *string `mapstructure:"username"` | ||
| Password *string `mapstructure:"password"` | ||
| ClientID *string `mapstructure:"client-id"` | ||
| ClientSecret *string `mapstructure:"client-secret"` | ||
| } | ||
|
|
||
| // IsClientConfig checks if the config is a client config or a username/password one | ||
| func (oac *OAuth2Config) IsClientConfig() bool { | ||
| return oac != nil && oac.Realm != nil && oac.ClientID != nil && oac.ClientSecret != nil | ||
| } | ||
|
|
||
| type oauth2TokenProvider struct { | ||
| perRealmTokenInfo map[string]*oauth2TokenInfo | ||
| defaultKey string | ||
| logger Logger | ||
| } | ||
|
|
||
| type oauth2TokenInfo struct { | ||
| tokenSource oauth2.TokenSource | ||
| token *oauth2.Token | ||
| } | ||
|
|
||
| // NewOAuth2TokenProvider creates an OidcTokenProvider | ||
| func NewOAuth2TokenProvider(kcConfig keycloak.Config, oauth2Config OAuth2Config, logger Logger) OidcTokenProvider { | ||
| if !oauth2Config.IsClientConfig() { | ||
| return NewOidcTokenProvider(kcConfig, *oauth2Config.Realm, *oauth2Config.Username, *oauth2Config.Password, *oauth2Config.ClientID, logger) | ||
| } | ||
| var perRealmTokenInfo = make(map[string]*oauth2TokenInfo) | ||
| _ = ImportLegacyAddrTokenProvider(&kcConfig) | ||
| kcConfig.URIProvider.ForEachTokenURI(func(targetRealm, tokenURI string) { | ||
| var cfg = clientcredentials.Config{ | ||
| ClientID: *oauth2Config.ClientID, | ||
| ClientSecret: *oauth2Config.ClientSecret, | ||
| TokenURL: fmt.Sprintf(tokenURI, *oauth2Config.Realm), | ||
| } | ||
| perRealmTokenInfo[targetRealm] = &oauth2TokenInfo{ | ||
| tokenSource: cfg.TokenSource(context.Background()), | ||
| } | ||
| }) | ||
|
|
||
| return &oauth2TokenProvider{ | ||
| perRealmTokenInfo: perRealmTokenInfo, | ||
| defaultKey: kcConfig.URIProvider.GetDefaultKey(), | ||
| logger: logger, | ||
| } | ||
| } | ||
|
|
||
| func (o *oauth2TokenProvider) ProvideToken(ctx context.Context) (string, error) { | ||
| return o.ProvideTokenForRealm(ctx, o.defaultKey) | ||
| } | ||
|
|
||
| func (o *oauth2TokenProvider) ProvideTokenForRealm(ctx context.Context, realm string) (string, error) { | ||
| var oti *oauth2TokenInfo | ||
| var ok bool | ||
| if oti, ok = o.perRealmTokenInfo[strings.ToLower(realm)]; !ok { | ||
| if realm == o.defaultKey { | ||
| return "", errorhandler.CreateInternalServerError("unknownRealm") | ||
| } | ||
| return o.ProvideTokenForRealm(ctx, o.defaultKey) | ||
| } | ||
| if oti.token == nil || !oti.token.Valid() { | ||
| var err error | ||
| oti.token, err = oti.tokenSource.Token() | ||
| if err != nil { | ||
| return "", err | ||
| } | ||
| } | ||
| return oti.token.AccessToken, nil | ||
| } |
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