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mastodon/app/lib/request.rb

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# frozen_string_literal: true
class Request
REQUEST_TARGET = '(request-target)'
include RoutingHelper
def initialize(verb, url, options = {})
@verb = verb
@url = Addressable::URI.parse(url).normalize
@options = options
@headers = {}
set_common_headers!
end
def on_behalf_of(account)
raise ArgumentError unless account.local?
@account = account
end
def add_headers(new_headers)
@headers.merge!(new_headers)
end
def perform
http_client.headers(headers).public_send(@verb, @url.to_s, @options)
end
def headers
(@account ? @headers.merge('Signature' => signature) : @headers).without(REQUEST_TARGET)
end
private
def set_common_headers!
@headers[REQUEST_TARGET] = "#{@verb} #{@url.path}"
@headers['User-Agent'] = user_agent
@headers['Host'] = @url.host
@headers['Date'] = Time.now.utc.httpdate
end
def signature
key_id = @account.to_webfinger_s
algorithm = 'rsa-sha256'
signature = Base64.strict_encode64(@account.keypair.sign(OpenSSL::Digest::SHA256.new, signed_string))
"keyId=\"#{key_id}\",algorithm=\"#{algorithm}\",headers=\"#{signed_headers}\",signature=\"#{signature}\""
end
def signed_string
@headers.map { |key, value| "#{key.downcase}: #{value}" }.join("\n")
end
def signed_headers
@headers.keys.join(' ').downcase
end
def user_agent
@user_agent ||= "#{HTTP::Request::USER_AGENT} (Mastodon/#{Mastodon::Version}; +#{root_url})"
end
def timeout
{ write: 10, connect: 10, read: 10 }
end
def http_client
HTTP.timeout(:per_operation, timeout).follow
end
end