Module ValidatePermission

Mountain::IPC::Permission::Validate

Module ValidatePermission 

Source
Expand description

§Validate

§File: IPC/Permission/Validate/ValidatePermission.rs

§Role in Mountain Architecture

Implements role-based access control (RBAC) for IPC operations, validating that users have necessary permissions before executing operations.

§Primary Responsibility

Validate user permissions for IPC operations using role-based access control.

§Secondary Responsibilities

  • Create security context from incoming messages
  • Map operations to required permissions
  • Aggregate permissions from user roles
  • Log permission validation results

§Dependencies

External Crates:

  • std::collections::HashMap - Role and permission storage
  • tokio::sync::RwLock - Async-safe concurrent access
  • log - Validation event logging
  • serde - Serialization for audit trails

Internal Modules:

  • ManageRole::{Role, Permission} - Role and permission definitions
  • LogEvent::{SecurityEvent, SecurityEventType} - Audit logging types

§Dependents

  • TauriIPCServer - Validates permissions before message processing
  • RouteMessage - Routes only authorized messages

§VSCode Pattern Reference

Matches VSCode’s role-based permissions in vs/base/common/permissions.ts

  • Hierarchical permission system
  • Role-based access control
  • Permission inheritance through role hierarchy
  • Operation-to-permission mapping

§Security Considerations

  • RBAC prevents unauthorized access to sensitive operations
  • All permission checks performed server-side (never trust client)
  • Audit logging for security compliance
  • Permission validation failures do not leak system internals
  • Default-deny policy (explicit deny if permission not found)
  • Timeout on permission checks prevents blocking
  • Role-based inheritance for scalable permission management

§Performance Considerations

  • RwLock allows concurrent reads, exclusive writes
  • Permission caching at role level reduces redundancy
  • Fast HashMap lookups for permission resolution
  • Async operations prevent blocking main thread
  • Early validation fails fast to reject unauthorized requests

§Error Handling Strategy

  • Returns Result for explicit error handling
  • Detailed error messages without exposing sensitive data
  • Permission denied errors logged but don’t crash system
  • Invalid context handled gracefully with default values

§Thread Safety

  • RwLock wrapped in Arc for safe concurrent access
  • Multiple concurrent reads, exclusive writes
  • Lock contention minimized by short critical sections

§TODO Items

  • Implement role hierarchy (roles can inherit from parent roles)
  • Add permission caching with TTL for frequently accessed permissions
  • Support permission negation (explicit deny overrides allow)
  • Add rate limiting for permission checks

Structs§

PermissionValidator
Permission validator for IPC operations
SecurityContext
Security context for permission validation