mastodon/app/services/fetch_atom_service.rb
Eugen Rochko c6b0311b86 Fix #54 - Fetch remote accounts by URL from mentions
Fetching atom extracted from FetchRemoteAccountService and FetchRemoteStatusService
into FetchAtomService. Mentions of the constant "http://activityschema.org/collection/public"
skipped as it's not a real URL/user.
2016-09-26 16:44:40 +02:00

47 lines
1.2 KiB
Ruby

class FetchAtomService < BaseService
def call(url)
response = http_client.head(url)
Rails.logger.debug "Remote status HEAD request returned code #{response.code}"
return nil if response.code != 200
if response.mime_type == 'application/atom+xml'
return [url, fetch(url)]
elsif !response['Link'].blank?
return process_headers(response)
else
return process_html(fetch(url))
end
end
private
def process_html(body)
Rails.logger.debug "Processing HTML"
page = Nokogiri::HTML(body)
alternate_link = page.xpath('//link[@rel="alternate"]').find { |link| link['type'] == 'application/atom+xml' }
return nil if alternate_link.nil?
return [alternate_link['href'], fetch(alternate_link['href'])]
end
def process_headers(response)
Rails.logger.debug "Processing link header"
link_header = LinkHeader.parse(response['Link'])
alternate_link = link_header.find_link(['rel', 'alternate'], ['type', 'application/atom+xml'])
return nil if alternate_link.nil?
return [alternate_link.href, fetch(alternate_link.href)]
end
def fetch(url)
http_client.get(url).to_s
end
def http_client
HTTP.timeout(:per_operation, write: 20, connect: 20, read: 50)
end
end