90 lines
2.1 KiB
Ruby
90 lines
2.1 KiB
Ruby
# frozen_string_literal: true
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class Request
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REQUEST_TARGET = '(request-target)'
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include RoutingHelper
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def initialize(verb, url, **options)
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@verb = verb
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@url = Addressable::URI.parse(url).normalize
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@options = options
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@headers = {}
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set_common_headers!
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set_digest! if options.key?(:body)
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end
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def on_behalf_of(account, key_id_format = :acct)
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raise ArgumentError unless account.local?
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@account = account
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@key_id_format = key_id_format
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self
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end
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def add_headers(new_headers)
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@headers.merge!(new_headers)
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self
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end
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def perform
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http_client.headers(headers).public_send(@verb, @url.to_s, @options)
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rescue => e
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raise e.class, "#{e.message} on #{@url}", e.backtrace[0]
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end
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def headers
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(@account ? @headers.merge('Signature' => signature) : @headers).without(REQUEST_TARGET)
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end
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private
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def set_common_headers!
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@headers[REQUEST_TARGET] = "#{@verb} #{@url.path}"
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@headers['User-Agent'] = user_agent
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@headers['Host'] = @url.host
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@headers['Date'] = Time.now.utc.httpdate
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end
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def set_digest!
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@headers['Digest'] = "SHA-256=#{Digest::SHA256.base64digest(@options[:body])}"
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end
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def signature
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algorithm = 'rsa-sha256'
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signature = Base64.strict_encode64(@account.keypair.sign(OpenSSL::Digest::SHA256.new, signed_string))
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"keyId=\"#{key_id}\",algorithm=\"#{algorithm}\",headers=\"#{signed_headers}\",signature=\"#{signature}\""
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end
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def signed_string
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@headers.map { |key, value| "#{key.downcase}: #{value}" }.join("\n")
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end
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def signed_headers
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@headers.keys.join(' ').downcase
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end
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def user_agent
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@user_agent ||= "#{HTTP::Request::USER_AGENT} (Mastodon/#{Mastodon::Version}; +#{root_url})"
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end
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def key_id
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case @key_id_format
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when :acct
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@account.to_webfinger_s
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when :uri
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[ActivityPub::TagManager.instance.uri_for(@account), '#main-key'].join
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end
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end
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def timeout
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{ write: 10, connect: 10, read: 10 }
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end
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def http_client
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HTTP.timeout(:per_operation, timeout).follow(max_hops: 2)
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end
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end
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