140 lines
3.8 KiB
Ruby
140 lines
3.8 KiB
Ruby
# frozen_string_literal: true
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module Gitlab
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class GitAccessSnippet < GitAccess
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extend ::Gitlab::Utils::Override
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ERROR_MESSAGES = {
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authentication_mechanism: 'The authentication mechanism is not supported.',
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read_snippet: 'You are not allowed to read this snippet.',
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update_snippet: 'You are not allowed to update this snippet.',
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snippet_not_found: 'The snippet you were looking for could not be found.',
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repository_not_found: 'The snippet repository you were looking for could not be found.'
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}.freeze
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attr_reader :snippet
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alias_method :container, :snippet
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def initialize(actor, snippet, protocol, **kwargs)
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@snippet = snippet
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super(actor, snippet&.project, protocol, **kwargs)
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@auth_result_type = nil
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@authentication_abilities &= [:download_code, :push_code]
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end
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def check(cmd, changes)
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# TODO: Investigate if expanding actor/authentication types are needed.
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# https://gitlab.com/gitlab-org/gitlab/issues/202190
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if actor && !actor.is_a?(User) && !actor.instance_of?(Key)
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raise ForbiddenError, ERROR_MESSAGES[:authentication_mechanism]
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end
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check_snippet_accessibility!
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super
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end
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private
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override :check_project!
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def check_project!(cmd, changes)
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return unless snippet.is_a?(ProjectSnippet)
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check_namespace!
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check_project_accessibility!
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add_project_moved_message!
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end
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override :check_push_access!
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def check_push_access!
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raise ForbiddenError, ERROR_MESSAGES[:update_snippet] unless user
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check_change_access!
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end
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def check_snippet_accessibility!
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if snippet.blank?
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raise NotFoundError, ERROR_MESSAGES[:snippet_not_found]
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end
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end
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override :can_read_project?
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def can_read_project?
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return true if user&.migration_bot?
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super
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end
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override :check_download_access!
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def check_download_access!
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passed = guest_can_download_code? || user_can_download_code?
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unless passed
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raise ForbiddenError, ERROR_MESSAGES[:read_snippet]
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end
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end
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override :guest_can_download_code?
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def guest_can_download_code?
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Guest.can?(:read_snippet, snippet)
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end
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override :user_can_download_code?
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def user_can_download_code?
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authentication_abilities.include?(:download_code) && user_access.can_do_action?(:read_snippet)
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end
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override :check_change_access!
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def check_change_access!
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unless user_access.can_do_action?(:update_snippet)
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raise ForbiddenError, ERROR_MESSAGES[:update_snippet]
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end
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check_size_before_push!
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changes_list.each do |change|
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# If user does not have access to make at least one change, cancel all
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# push by allowing the exception to bubble up
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check_single_change_access(change)
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end
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check_push_size!
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end
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def check_single_change_access(change)
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Checks::SnippetCheck.new(change, logger: logger).validate!
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Checks::PushFileCountCheck.new(change, repository: repository, limit: Snippet.max_file_limit(user), logger: logger).validate!
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rescue Checks::TimedLogger::TimeoutError
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raise TimeoutError, logger.full_message
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end
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override :check_repository_existence!
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def check_repository_existence!
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unless repository.exists?
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raise NotFoundError, ERROR_MESSAGES[:repository_not_found]
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end
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end
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override :user_access
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def user_access
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@user_access ||= UserAccessSnippet.new(user, snippet: snippet)
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end
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# TODO: Implement EE/Geo https://gitlab.com/gitlab-org/gitlab/issues/205629
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override :check_custom_action
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def check_custom_action(cmd)
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nil
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end
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override :check_size_limit?
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def check_size_limit?
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return false if user&.migration_bot?
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super
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end
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end
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end
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