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72a7ae59b6Previously, we allowed any url for user_api_client consumers. We've decided to restrict this now and provide more control for admins over the accepted redirect URLs for user api client applications.
59 lines
1.8 KiB
Ruby
Vendored
59 lines
1.8 KiB
Ruby
Vendored
# frozen_string_literal: true
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module WildcardUrlChecker
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HOST_WILDCARD_PATTERN = "[A-Za-z0-9.-]*"
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HOST_WILDCARD_VALUE_REGEXP = /\A[A-Za-z0-9.-]+\z/
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URL_COMPONENT_WILDCARD_PATTERN = ".*"
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def self.check_url(url, url_to_check)
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uri_to_check = parse_valid_url(url_to_check)
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return false if uri_to_check.blank?
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return true if url == "*"
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uri = parse_valid_url(url)
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return false if uri.blank?
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uri.scheme.casecmp?(uri_to_check.scheme) && uri.port == uri_to_check.port &&
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uri.userinfo.to_s.casecmp?(uri_to_check.userinfo.to_s) &&
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hosts_match?(uri.host, uri_to_check.host) &&
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wildcard_match?(path_query(uri), path_query(uri_to_check), URL_COMPONENT_WILDCARD_PATTERN) &&
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wildcard_match?(uri.fragment.to_s, uri_to_check.fragment.to_s, URL_COMPONENT_WILDCARD_PATTERN)
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end
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private
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def self.parse_valid_url(url)
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uri = URI.parse(url)
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return uri if uri&.scheme.present? && uri&.host.present?
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nil
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rescue URI::InvalidURIError
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nil
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end
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def self.hosts_match?(host, host_to_check)
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host = host.downcase
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host_to_check = host_to_check.downcase
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if host.start_with?("*.") && host.count("*") == 1
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suffix = host.delete_prefix("*.")
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return(
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host_to_check.end_with?(".#{suffix}") &&
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host_to_check.delete_suffix(".#{suffix}").match?(HOST_WILDCARD_VALUE_REGEXP)
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)
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end
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wildcard_match?(host, host_to_check, HOST_WILDCARD_PATTERN)
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end
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def self.path_query(uri)
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path_query = uri.path.to_s
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path_query += "?#{uri.query}" if uri.query.present?
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path_query
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end
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def self.wildcard_match?(pattern, value, wildcard_pattern)
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escaped_pattern = Regexp.escape(pattern).gsub("\\*", wildcard_pattern)
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Regexp.new("\\A#{escaped_pattern}\\z", "i").match?(value)
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end
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end
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