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sloproxy
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5.7 kB · 171 lines
Go
at main
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import ( "errors" "fmt" "net/http")
// OAuthError represents an OAuth-specific error.type OAuthError struct { // Code is the OAuth error code. Code string `json:"error"` // Description is a human-readable description of the error. Description string `json:"error_description,omitempty"` // URI is a URI identifying a human-readable web page with information about the error. URI string `json:"error_uri,omitempty"` // StatusCode is the HTTP status code associated with the error. StatusCode int `json:"-"`}
// Error returns a string representation of the OAuth error.func (e *OAuthError) Error() string { if e.Description != "" { return fmt.Sprintf("OAuth error %s: %s", e.Code, e.Description) } return fmt.Sprintf("OAuth error: %s", e.Code)}
// NewOAuthError creates a new OAuth error with the specified code, description, and status code.func NewOAuthError(code, description string, statusCode int) *OAuthError { return &OAuthError{ Code: code, Description: description, StatusCode: statusCode, }}
// AuthenticationError represents authentication-related errors.type AuthenticationError struct { // Type is the type of authentication error. Type string `json:"type"` // Message is a human-readable message describing the error. Message string `json:"message"` // Code is the HTTP status code associated with the error. Code int `json:"code"` // Cause is the underlying error that caused this authentication error. Cause error `json:"-"`}
// Error returns a string representation of the authentication error.func (e *AuthenticationError) Error() string { if e.Cause != nil { return fmt.Sprintf("%s: %s (caused by: %v)", e.Type, e.Message, e.Cause) } return fmt.Sprintf("%s: %s", e.Type, e.Message)}
// Common authentication error types.var ( // ErrTokenExpired = &AuthenticationError{ // Type: "token_expired", // Message: "Access token has expired", // Code: http.StatusUnauthorized, // }
// ErrInvalidState represents an error for invalid OAuth state parameter. ErrInvalidState = &AuthenticationError{ Type: "invalid_state", Message: "OAuth state parameter is invalid", Code: http.StatusBadRequest, }
// ErrCodeExchangeFailed represents an error when exchanging authorization code for tokens fails. ErrCodeExchangeFailed = &AuthenticationError{ Type: "code_exchange_failed", Message: "Failed to exchange authorization code for tokens", Code: http.StatusBadRequest, }
// ErrServerStartFailed represents an error when starting the OAuth callback server fails. ErrServerStartFailed = &AuthenticationError{ Type: "server_start_failed", Message: "Failed to start OAuth callback server", Code: http.StatusInternalServerError, }
// ErrPortInUse represents an error when the OAuth callback port is already in use. ErrPortInUse = &AuthenticationError{ Type: "port_in_use", Message: "OAuth callback port is already in use", Code: 13, // Special exit code for port-in-use }
// ErrCallbackTimeout represents an error when waiting for OAuth callback times out. ErrCallbackTimeout = &AuthenticationError{ Type: "callback_timeout", Message: "Timeout waiting for OAuth callback", Code: http.StatusRequestTimeout, }
// ErrBrowserOpenFailed represents an error when opening the browser for authentication fails. ErrBrowserOpenFailed = &AuthenticationError{ Type: "browser_open_failed", Message: "Failed to open browser for authentication", Code: http.StatusInternalServerError, })
// NewAuthenticationError creates a new authentication error with a cause based on a base error.func NewAuthenticationError(baseErr *AuthenticationError, cause error) *AuthenticationError { return &AuthenticationError{ Type: baseErr.Type, Message: baseErr.Message, Code: baseErr.Code, Cause: cause, }}
// IsAuthenticationError checks if an error is an authentication error.func IsAuthenticationError(err error) bool { var authenticationError *AuthenticationError ok := errors.As(err, &authenticationError) return ok}
// IsOAuthError checks if an error is an OAuth error.func IsOAuthError(err error) bool { var oAuthError *OAuthError ok := errors.As(err, &oAuthError) return ok}
// GetUserFriendlyMessage returns a user-friendly error message based on the error type.func GetUserFriendlyMessage(err error) string { switch { case IsAuthenticationError(err): var authErr *AuthenticationError errors.As(err, &authErr) switch authErr.Type { case "token_expired": return "Your authentication has expired. Please log in again." case "token_invalid": return "Your authentication is invalid. Please log in again." case "authentication_required": return "Please log in to continue." case "port_in_use": return "The required port is already in use. Please close any applications using port 3000 and try again." case "callback_timeout": return "Authentication timed out. Please try again." case "browser_open_failed": return "Could not open your browser automatically. Please copy and paste the URL manually." default: return "Authentication failed. Please try again." } case IsOAuthError(err): var oauthErr *OAuthError errors.As(err, &oauthErr) switch oauthErr.Code { case "access_denied": return "Authentication was cancelled or denied." case "invalid_request": return "Invalid authentication request. Please try again." case "server_error": return "Authentication server error. Please try again later." default: return fmt.Sprintf("Authentication failed: %s", oauthErr.Description) } default: return "An unexpected error occurred. Please try again." }}