Integrate OAuth2 Provider (#5378)

modules/auth/user_form.go

@@ -137,6 +137,54 @@ func (f *SignInForm) Validate(ctx *macaron.Context, errs binding.Errors) binding
 	return validate(errs, ctx.Data, f, ctx.Locale)
 }
 
+// AuthorizationForm form for authorizing oauth2 clients
+type AuthorizationForm struct {
+	ResponseType string `binding:"Required;In(code)"`
+	ClientID     string `binding:"Required"`
+	RedirectURI  string
+	State        string
+
+	// PKCE support
+	CodeChallengeMethod string // S256, plain
+	CodeChallenge       string
+}
+
+// Validate valideates the fields
+func (f *AuthorizationForm) Validate(ctx *macaron.Context, errs binding.Errors) binding.Errors {
+	return validate(errs, ctx.Data, f, ctx.Locale)
+}
+
+// GrantApplicationForm form for authorizing oauth2 clients
+type GrantApplicationForm struct {
+	ClientID    string `binding:"Required"`
+	RedirectURI string
+	State       string
+}
+
+// Validate valideates the fields
+func (f *GrantApplicationForm) Validate(ctx *macaron.Context, errs binding.Errors) binding.Errors {
+	return validate(errs, ctx.Data, f, ctx.Locale)
+}
+
+// AccessTokenForm for issuing access tokens from authorization codes or refresh tokens
+type AccessTokenForm struct {
+	GrantType    string
+	ClientID     string
+	ClientSecret string
+	RedirectURI  string
+	// TODO Specify authentication code length to prevent against birthday attacks
+	Code         string
+	RefreshToken string
+
+	// PKCE support
+	CodeVerifier string
+}
+
+// Validate valideates the fields
+func (f *AccessTokenForm) Validate(ctx *macaron.Context, errs binding.Errors) binding.Errors {
+	return validate(errs, ctx.Data, f, ctx.Locale)
+}
+
 //   __________________________________________.___ _______    ________  _________
 //  /   _____/\_   _____/\__    ___/\__    ___/|   |\      \  /  _____/ /   _____/
 //  \_____  \  |    __)_   |    |     |    |   |   |/   |   \/   \  ___ \_____  \
@@ -258,6 +306,17 @@ func (f *NewAccessTokenForm) Validate(ctx *macaron.Context, errs binding.Errors)
 	return validate(errs, ctx.Data, f, ctx.Locale)
 }
 
+// EditOAuth2ApplicationForm form for editing oauth2 applications
+type EditOAuth2ApplicationForm struct {
+	Name        string `binding:"Required;MaxSize(255)" form:"application_name"`
+	RedirectURI string `binding:"Required" form:"redirect_uri"`
+}
+
+// Validate valideates the fields
+func (f *EditOAuth2ApplicationForm) Validate(ctx *macaron.Context, errs binding.Errors) binding.Errors {
+	return validate(errs, ctx.Data, f, ctx.Locale)
+}
+
 // TwoFactorAuthForm for logging in with 2FA token.
 type TwoFactorAuthForm struct {
 	Passcode string `binding:"Required"`