constants

package

v0.3.2 Latest Latest Go to latest Published: Jun 12, 2026 License: Apache-2.0 Imports: 0 Imported by: 0

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Repository

github.com/giantswarm/mcp-oauth

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Documentation ¶

Overview ¶

Package constants defines values shared between the root package and server/ to break the circular import that would arise from server importing the root (which already imports server for its type aliases).

Constants ¶

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const (
	ErrorCodeInvalidClient           = "invalid_client"
	ErrorCodeInvalidRequest          = "invalid_request"
	ErrorCodeInvalidRedirectURI      = "invalid_redirect_uri"
	ErrorCodeInvalidScope            = "invalid_scope"
	ErrorCodeInvalidGrant            = "invalid_grant"
	ErrorCodeInvalidToken            = "invalid_token"
	ErrorCodeInsufficientScope       = "insufficient_scope"
	ErrorCodeUnauthorizedClient      = "unauthorized_client"
	ErrorCodeUnsupportedGrantType    = "unsupported_grant_type"
	ErrorCodeUnsupportedResponseType = "unsupported_response_type"
	ErrorCodeServerError             = "server_error"
	ErrorCodeAccessDenied            = "access_denied"
	ErrorCodeRateLimitExceeded       = "rate_limit_exceeded"
	OAuthSpecVersion                 = "OAuth 2.1"
)

OAuth 2.0 / 2.1 error codes (RFC 6749 §4.1.2.1, §5.2).

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const (
	ErrorCodeInvalidDPoPProof = "invalid_dpop_proof"
	ErrorCodeUseDPoPNonce     = "use_dpop_nonce"
)

DPoP error codes (RFC 9449).

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const (
	ErrorCodeLoginRequired            = "login_required"
	ErrorCodeConsentRequired          = "consent_required"
	ErrorCodeInteractionRequired      = "interaction_required"
	ErrorCodeAccountSelectionRequired = "account_selection_required"
)

OIDC silent-auth error codes (OIDC Core §3.1.2.6).

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const (
	MinCodeVerifierLength = 43
	MaxCodeVerifierLength = 128
	PKCEMethodS256        = "S256"
	PKCEMethodPlain       = "plain"
)

PKCE validation bounds (RFC 7636 §4.1).

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const (
	ErrorCodeInvalidTarget = "invalid_target"
)

Token-exchange error codes (RFC 8693 §2.2.2).

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const MaxResourceLength = 2048

Resource parameter validation (RFC 8707).

Variables ¶

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var (
	// AllowedHTTPSchemes contains the only two schemes permitted for http(s) redirect URIs.
	AllowedHTTPSchemes = []string{"http", "https"}

	// DefaultBlockedRedirectSchemes is the canonical list of schemes that must
	// never appear in redirect URIs. Covers script-injection vectors, local
	// filesystem access, proprietary Windows app schemes, and legacy protocols.
	DefaultBlockedRedirectSchemes = []string{
		"javascript", "data", "file", "vbscript", "about", "ftp",
		"blob", "ms-appx", "ms-appx-web",
	}

	// DefaultRFC3986SchemePattern is the regex that validates custom URI schemes
	// (RFC 3986 §3.1).
	DefaultRFC3986SchemePattern = []string{"^[a-z][a-z0-9+.-]*$"}
)

Redirect URI scheme lists. These are vars (not consts) because Go does not allow slice literals as constants.

Functions ¶

This section is empty.

Types ¶

This section is empty.

Source Files ¶

View all Source files

constants.go

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