82 lines
2.2 KiB
Ruby
82 lines
2.2 KiB
Ruby
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# frozen_string_literal: true
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module Gitlab
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module Search
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class AbuseDetection
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include ActiveModel::Validations
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include AbuseValidators
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ABUSIVE_TERM_SIZE = 100
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ALLOWED_CHARS_REGEX = %r{\A[[:alnum:]_\-\/\.!]+\z}.freeze
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MINIMUM_SEARCH_CHARS = 2
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ALLOWED_SCOPES = %w(
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blobs
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code
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commits
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epics
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issues
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merge_requests
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milestones
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notes
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projects
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snippet_titles
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users
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wiki_blobs
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).freeze
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READABLE_PARAMS = %i(
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group_id
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project_id
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project_ref
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query_string
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repository_ref
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scope
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).freeze
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STOP_WORDS = %w(
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a an and are as at be but by for if in into is it no not of on or such that the their then there these they this to was will with
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).freeze
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validates :project_id, :group_id,
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numericality: { only_integer: true, message: "abusive ID detected" }, allow_blank: true
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validates :scope, inclusion: { in: ALLOWED_SCOPES, message: 'abusive scope detected' }, allow_blank: true
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validates :repository_ref, :project_ref,
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format: { with: ALLOWED_CHARS_REGEX, message: "abusive characters detected" }, allow_blank: true
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validates :query_string,
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exclusion: { in: STOP_WORDS, message: 'stopword only abusive search detected' }, allow_blank: true
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validates :query_string,
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length: { minimum: MINIMUM_SEARCH_CHARS, message: 'abusive tiny search detected' }, unless: :skip_tiny_search_validation?, allow_blank: true
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validates :query_string,
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no_abusive_term_length: { maximum: ABUSIVE_TERM_SIZE, maximum_for_url: ABUSIVE_TERM_SIZE * 2 }
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validates :query_string, :repository_ref, :project_ref, no_abusive_coercion_from_string: true
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attr_reader(*READABLE_PARAMS)
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def initialize(params)
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READABLE_PARAMS.each { |p| instance_variable_set("@#{p}", params[p]) }
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end
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private
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def skip_tiny_search_validation?
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wildcard_search? || stop_word_search?
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end
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def wildcard_search?
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query_string == '*'
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end
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def stop_word_search?
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STOP_WORDS.include? query_string
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end
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end
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end
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end
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