Class: Norn::UI::Gatekeeper

Inherits:
Object
  • Object
show all
Defined in:
lib/norn/ui/gatekeeper.rb

Instance Method Summary collapse

Constructor Details

#initialize(input: $stdin, output: $stdout) ⇒ Gatekeeper

Returns a new instance of Gatekeeper.



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# File 'lib/norn/ui/gatekeeper.rb', line 9

def initialize(input: $stdin, output: $stdout)
  @input = input
  @output = output
  @prompt = TTY::Prompt.new(input: input, output: output)
end

Instance Method Details

#authorize_capabilities(tool_name, caps, args) ⇒ Object 



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# File 'lib/norn/ui/gatekeeper.rb', line 15

def authorize_capabilities(tool_name, caps, args)
  @output.puts "\nāš ļø  Security Escalation: Tool '#{tool_name}' requested unauthorized capabilities: #{caps.join(', ')}"
  @output.puts "Arguments: #{args.inspect}"

  choices = {
    "šŸ”“ Yes, authorize these capabilities" => true,
    "šŸš« No, deny authorization" => false
  }
  @prompt.select("Do you want to authorize this operation?", choices)
end

#authorize_danger(tool, args) ⇒ Object 



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# File 'lib/norn/ui/gatekeeper.rb', line 26

def authorize_danger(tool, args)
  tool_name = tool.name
  
  if ["file_write", "file_edit"].include?(tool_name)
    # Interactive File Diff Previewer
    begin
      root = File.expand_path(Norn.workspace_root)
      abs_path = File.expand_path(args[:path].to_s, root)
      unless abs_path == root || abs_path.start_with?(root + File::SEPARATOR)
        raise SecurityError, "Path traversal attempt detected"
      end

      old_content = File.exist?(abs_path) ? File.read(abs_path) : ""
      new_content = if tool_name == "file_write"
                      args[:content].to_s
                    else
                      old_content.sub(args[:old_string].to_s, args[:new_string].to_s)
                    end

      @output.puts "\nšŸ“ Proposed changes to \e[1;32m#{args[:path]}\e[0m:"
      @output.puts Norn::DiffHelper.color_diff(old_content, new_content)
    rescue => e
      @output.puts "Diff Generation Error: #{e.message}"
      return false
    end
  else
    # Generic Danger Warning
    @output.puts "\nāš ļø  Warning: Norn wants to execute a potentially dangerous command: '#{tool_name}'"
    @output.puts "Arguments: #{args.inspect}"
  end

  choices = {
    "šŸ”“ Yes, proceed" => true,
    "šŸš« No, abort/review" => false
  }
  
  # Only offer session-level approvals if the tool is not statically dangerous
  # OR if it explicitly allows session-level danger bypass.
  is_statically_dangerous = tool.respond_to?(:dangerous) && tool.dangerous
  allows_session_danger = tool.respond_to?(:allow_session_danger?) && tool.allow_session_danger?
  
  if !is_statically_dangerous || allows_session_danger
    choices["āš” #{tool.session_approval_label(args)}"] = :session
  end
  
  @prompt.select("Execute this action?", choices)
end

#refine_arguments(tool, args, user_feedback, client) ⇒ Object 



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# File 'lib/norn/ui/gatekeeper.rb', line 83

def refine_arguments(tool, args, user_feedback, client)
  prompt = <<~PROMPT
    You are a precise tool parameter refiner. Your task is to update the parameters of a tool based on user feedback.

    Tool Name: #{tool.name}
    Tool Description: #{tool.description}
    Tool Schema: #{tool.parameters.to_json}

    Original Parameters: #{args.to_json}

    User Feedback: #{user_feedback}

    Analyze the user's feedback, apply requested changes to the original parameters, and ensure they conform to the tool schema.
    Output ONLY a raw, valid JSON object containing the updated parameters.
    Do NOT wrap output in markdown codeblocks. Do NOT add extra explanation or prose.
  PROMPT

  response_result = client.call([{ role: "user", content: prompt }])
  return response_result if response_result.failure?

  response = response_result.value!
  response_text = response.is_a?(Hash) ? response[:content] : response.to_s

  # Robust cleaning of markdown backticks if LLM ignores instruction
  cleaned_text = response_text.gsub(/```json|```/, "").strip

  begin
    parsed = JSON.parse(cleaned_text)
    Success(symbolize_keys(parsed))
  rescue => e
    Failure("Invalid JSON returned by refiner LLM: #{e.message}")
  end
end

#show_fallback_menu(tool_name, args) ⇒ Object 



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# File 'lib/norn/ui/gatekeeper.rb', line 74

def show_fallback_menu(tool_name, args)
  choices = {
    "Skip this execution (allow agent to continue without this result)" => :skip,
    "Edit command arguments inline (freeform feedback)" => :edit,
    "Abort the active agent session completely" => :abort
  }
  @prompt.select("\nOperation Aborted. What would you like to do next?", choices)
end