Class: Vkit::Policy::PolicyValidator

Inherits:
Object
  • Object
show all
Defined in:
lib/vkit/policy/policy_validator.rb

Constant Summary collapse

ACTION_KEYS = 
%w[deny require_approval mask allow].freeze

Class Method Summary collapse

Class Method Details

.require_reason!(action, prefix) ⇒ Object

Raises:



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# File 'lib/vkit/policy/policy_validator.rb', line 96

def self.require_reason!(action, prefix)
  reason = action["reason"]
  return if reason.is_a?(String) && !reason.strip.empty?

  raise ValidationError, "    \#{prefix}action.reason is required and must be a non-empty string\n    when using deny or require_approval.\n  MSG\nend\n"

.require_string!(hash, key, prefix) ⇒ Object

Raises:



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# File 'lib/vkit/policy/policy_validator.rb', line 37

def self.require_string!(hash, key, prefix)
  value = hash[key]
  return if value.is_a?(String) && !value.strip.empty?

  raise ValidationError, "    \#{prefix}\#{key} is required and must be a non-empty string.\n  MSG\nend\n"

.validate!(policy, file: nil) ⇒ Object 



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# File 'lib/vkit/policy/policy_validator.rb', line 8

def self.validate!(policy, file: nil)
  prefix = file ? "In #{file}:\n\n" : ""

  require_string!(policy, "id", prefix)
  require_string!(policy, "description", prefix)

  action = policy["action"]
  unless action.is_a?(Hash)
    raise ValidationError, "      \#{prefix}Invalid action format.\n\n      Expected:\n\n        action:\n          deny: true\n\n      Got:\n\n        action: \#{action.inspect}\n\n      VaultKit requires `action` to be a mapping so it can attach\n      metadata like reason, ttl, approvals, and masking rules.\n    MSG\n  end\n\n  validate_action!(action, policy, prefix)\n  true\nend\n"

.validate_action!(action, policy, prefix) ⇒ Object 



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# File 'lib/vkit/policy/policy_validator.rb', line 46

def self.validate_action!(action, policy, prefix)
  intents = ACTION_KEYS.select { |k| action[k] == true }

  if intents.empty?
    raise ValidationError, "      \#{prefix}Action must specify exactly one intent.\n\n      Choose one of:\n\n        - deny\n        - require_approval\n        - mask\n        - allow\n\n      Example:\n\n        action:\n          deny: true\n    MSG\n  end\n\n  if intents.size > 1\n    raise ValidationError, <<~MSG\n      \#{prefix}Action specifies multiple intents: \#{intents.join(', ')}.\n\n      Only one intent may be set to true.\n    MSG\n  end\n\n  intent = intents.first\n\n  case intent\n  when \"deny\"\n    require_reason!(action, prefix)\n\n  when \"require_approval\"\n    require_reason!(action, prefix)\n    require_string!(action, \"approver_role\", prefix)\n\n  when \"mask\"\n    # masking is optional, but if present must be valid\n    validate_masking!(policy, prefix) if policy.key?(\"masking\")\n\n  when \"allow\"\n    # nothing required\n  end\n\n  validate_ttl!(action[\"ttl\"], prefix) if action.key?(\"ttl\")\nend\n"

.validate_mask_method!(method, prefix, path) ⇒ Object 



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# File 'lib/vkit/policy/policy_validator.rb', line 177

def self.validate_mask_method!(method, prefix, path)
  allowed = %w[redact hash truncate nullify full partial]

  unless allowed.include?(method.to_s)
    raise ValidationError, "      \#{prefix}Invalid masking method at \#{path}.\n\n      Allowed values:\n        - redact\n        - hash\n        - truncate\n        - nullify\n        - full\n        - partial\n\n      Got:\n        \#{method.inspect}\n    MSG\n  end\nend\n"

.validate_masking!(policy, prefix) ⇒ Object

Masking validation (aligned with compiler + runtime)



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# File 'lib/vkit/policy/policy_validator.rb', line 132

def self.validate_masking!(policy, prefix)
  masking = policy["masking"]
  return unless masking

  unless masking.is_a?(Hash)
    raise ValidationError, "#{prefix}masking must be a mapping."
  end

  allowed_keys = %w[default_method rules]
  unknown_keys = masking.keys - allowed_keys

  if unknown_keys.any?
    raise ValidationError, "      \#{prefix}Unknown keys in masking: \#{unknown_keys.join(', ')}\n\n      Allowed keys:\n        - default_method\n        - rules\n    MSG\n  end\n\n  if masking[\"default_method\"]\n    validate_mask_method!(\n      masking[\"default_method\"],\n      prefix,\n      \"masking.default_method\"\n    )\n  end\n\n  if masking[\"rules\"]\n    unless masking[\"rules\"].is_a?(Hash)\n      raise ValidationError,\n        \"\#{prefix}masking.rules must be a mapping of field \u2192 method.\"\n    end\n\n    masking[\"rules\"].each do |field, method|\n      validate_mask_method!(\n        method,\n        prefix,\n        \"masking.rules.\#{field}\"\n      )\n    end\n  end\nend\n"

.validate_ttl!(ttl, prefix) ⇒ Object 



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# File 'lib/vkit/policy/policy_validator.rb', line 106

def self.validate_ttl!(ttl, prefix)
  case ttl
  when Integer
    return
  when String
    return if ttl.match?(/\A\d+[smhd]\z/)

    raise ValidationError, "      \#{prefix}Invalid ttl format.\n\n      Expected examples:\n        - \"30m\"\n        - \"1h\"\n        - \"2d\"\n\n      Got:\n        ttl: \#{ttl.inspect}\n    MSG\n  else\n    raise ValidationError, <<~MSG\n      \#{prefix}ttl must be a string duration (e.g. \"1h\") or an integer (seconds).\n    MSG\n  end\nend\n"