mirror of
https://github.com/discourse/discourse.git
synced 2024-11-25 02:15:46 +08:00
82 lines
2.1 KiB
Ruby
82 lines
2.1 KiB
Ruby
# frozen_string_literal: true
|
|
|
|
class UrlHelper
|
|
|
|
# At the moment this handles invalid URLs that browser address bar accepts
|
|
# where second # is not encoded
|
|
#
|
|
# Longer term we can add support of simpleidn and encode unicode domains
|
|
def self.relaxed_parse(url)
|
|
url, fragment = url.split("#", 2)
|
|
uri = URI.parse(url)
|
|
if uri
|
|
fragment = URI.escape(fragment) if fragment&.include?('#')
|
|
uri.fragment = fragment
|
|
uri
|
|
end
|
|
rescue URI::Error
|
|
end
|
|
|
|
def self.is_local(url)
|
|
url.present? && (
|
|
Discourse.store.has_been_uploaded?(url) ||
|
|
!!(url =~ Regexp.new("^#{Discourse.base_uri}/(assets|plugins|images)/")) ||
|
|
url.start_with?(Discourse.asset_host || Discourse.base_url_no_prefix)
|
|
)
|
|
end
|
|
|
|
def self.absolute(url, cdn = Discourse.asset_host)
|
|
cdn = "https:#{cdn}" if cdn && cdn =~ /^\/\//
|
|
url =~ /^\/[^\/]/ ? (cdn || Discourse.base_url_no_prefix) + url : url
|
|
end
|
|
|
|
def self.absolute_without_cdn(url)
|
|
self.absolute(url, nil)
|
|
end
|
|
|
|
def self.schemaless(url)
|
|
url.sub(/^http:/i, "")
|
|
end
|
|
|
|
DOUBLE_ESCAPED_REGEXP ||= /%25([0-9a-f]{2})/i
|
|
|
|
# Prevents double URL encode
|
|
# https://stackoverflow.com/a/37599235
|
|
def self.escape_uri(uri, pattern = URI::UNSAFE)
|
|
encoded = URI.encode(uri, pattern)
|
|
encoded.gsub!(DOUBLE_ESCAPED_REGEXP, '%\1')
|
|
encoded
|
|
end
|
|
|
|
def self.cook_url(url)
|
|
return url unless is_local(url)
|
|
|
|
uri = URI.parse(url)
|
|
filename = File.basename(uri.path)
|
|
is_attachment = !FileHelper.is_supported_image?(filename)
|
|
|
|
no_cdn = SiteSetting.login_required || SiteSetting.prevent_anons_from_downloading_files
|
|
|
|
url = absolute_without_cdn(url)
|
|
|
|
unless is_attachment && no_cdn
|
|
url = Discourse.store.cdn_url(url)
|
|
url = local_cdn_url(url) if Discourse.store.external?
|
|
end
|
|
|
|
schemaless(url)
|
|
rescue URI::Error
|
|
url
|
|
end
|
|
|
|
def self.local_cdn_url(url)
|
|
return url if Discourse.asset_host.blank?
|
|
if url.start_with?("/#{Discourse.store.upload_path}/")
|
|
"#{Discourse.asset_host}#{url}"
|
|
else
|
|
url.sub(Discourse.base_url_no_prefix, Discourse.asset_host)
|
|
end
|
|
end
|
|
|
|
end
|