Greptile Overview

Summary

This PR strengthens security by adding session context checks to copilot tool calls, ensuring users are authenticated before tools execute on their behalf.

Key improvements:

• Added verifyWorkflowAccess() function with comprehensive permission checking for workflow ownership and workspace access
• Modified all user-related server tools (get-environment-variables, set-environment-variables, get-oauth-credentials) to require authenticated user context
• Enhanced the tool execution pipeline to pass userId from authenticated sessions through to individual tools
• Implemented proper error handling with descriptive permission error messages
• Replaced direct getUserId() calls with authenticated context verification

Security enhancements:

• Tools now verify user authentication before accessing sensitive data like environment variables and OAuth credentials
• Workflow access is properly validated against database ownership and workspace permissions
• Prevents unauthorized tool execution by requiring active authenticated sessions

Confidence Score: 5/5

• This PR is safe to merge with no security risks
• The implementation follows security best practices with proper authentication, authorization checks, comprehensive error handling, and no breaking changes to existing functionality
• No files require special attention

Important Files Changed

File Analysis

Sequence Diagram

sequenceDiagram
    participant C as Copilot Client
    participant A as API Endpoint
    participant R as Tool Router
    participant T as Server Tool
    participant P as Permissions
    participant D as Database

    C->>A: Execute tool request
    A->>A: Authenticate session
    
    alt Authentication fails
        A-->>C: Unauthorized error
    else Authentication succeeds
        A->>R: Route execution with user context
        R->>T: Execute tool with context
        
        alt Workflow access required
            T->>P: Verify workflow access
            P->>D: Check permissions
            D-->>P: Return access data
            P-->>T: Return access result
            
            alt Access denied
                T-->>A: Permission error
                A-->>C: Forbidden response
            else Access granted
                T->>T: Process tool execution
                T-->>R: Return result
                R-->>A: Forward result
                A-->>C: Success response
            end
        else No workflow check needed
            T->>T: Process tool execution
            T-->>R: Return result
            R-->>A: Forward result
            A-->>C: Success response
        end
    end

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