87 lines
2.9 KiB
Ruby
87 lines
2.9 KiB
Ruby
module Gitlab
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module Auth
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Result = Struct.new(:user, :type)
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class << self
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def find_for_git_client(login, password, project:, ip:)
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raise "Must provide an IP for rate limiting" if ip.nil?
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result = Result.new
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if valid_ci_request?(login, password, project)
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result.type = :ci
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elsif result.user = find_with_user_password(login, password)
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result.type = :gitlab_or_ldap
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elsif result.user = oauth_access_token_check(login, password)
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result.type = :oauth
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end
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rate_limit!(ip, success: !!result.user || (result.type == :ci), login: login)
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result
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end
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def find_with_user_password(login, password)
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user = User.by_login(login)
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# If no user is found, or it's an LDAP server, try LDAP.
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# LDAP users are only authenticated via LDAP
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if user.nil? || user.ldap_user?
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# Second chance - try LDAP authentication
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return nil unless Gitlab::LDAP::Config.enabled?
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Gitlab::LDAP::Authentication.login(login, password)
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else
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user if user.valid_password?(password)
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end
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end
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def rate_limit!(ip, success:, login:)
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rate_limiter = Gitlab::Auth::IpRateLimiter.new(ip)
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return unless rate_limiter.enabled?
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if success
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# Repeated login 'failures' are normal behavior for some Git clients so
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# it is important to reset the ban counter once the client has proven
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# they are not a 'bad guy'.
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rate_limiter.reset!
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else
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# Register a login failure so that Rack::Attack can block the next
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# request from this IP if needed.
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rate_limiter.register_fail!
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if rate_limiter.banned?
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Rails.logger.info "IP #{ip} failed to login " \
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"as #{login} but has been temporarily banned from Git auth"
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end
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end
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end
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private
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def valid_ci_request?(login, password, project)
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matched_login = /(?<service>^[a-zA-Z]*-ci)-token$/.match(login)
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return false unless project && matched_login.present?
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underscored_service = matched_login['service'].underscore
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if underscored_service == 'gitlab_ci'
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project && project.valid_build_token?(password)
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elsif Service.available_services_names.include?(underscored_service)
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# We treat underscored_service as a trusted input because it is included
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# in the Service.available_services_names whitelist.
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service = project.public_send("#{underscored_service}_service")
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service && service.activated? && service.valid_token?(password)
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end
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end
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def oauth_access_token_check(login, password)
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if login == "oauth2" && password.present?
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token = Doorkeeper::AccessToken.by_token(password)
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token && token.accessible? && User.find_by(id: token.resource_owner_id)
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end
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end
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end
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end
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end
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