require 'uri' require 'stringio' require 'time' module URI class FTP def buffer_open(buf, proxy, options) # :nodoc: if proxy OpenURI.open_http(buf, self, proxy, options) return end require 'net/ftp' directories = self.path.split(%r{/}, -1) directories.shift if directories[0] == '' # strip a field before leading slash directories.each {|d| d.gsub!(/%([0-9A-Fa-f][0-9A-Fa-f])/) { [$1].pack("H2") } } unless filename = directories.pop raise ArgumentError, "no filename: #{self.inspect}" end directories.each {|d| if /[\r\n]/ =~ d raise ArgumentError, "invalid directory: #{d.inspect}" end } if /[\r\n]/ =~ filename raise ArgumentError, "invalid filename: #{filename.inspect}" end typecode = self.typecode if typecode && /\A[aid]\z/ !~ typecode raise ArgumentError, "invalid typecode: #{typecode.inspect}" end # The access sequence is defined by RFC 1738 ftp = Net::FTP.open(self.host) ftp.passive = true if !options[:ftp_active_mode] # todo: extract user/passwd from .netrc. user = 'anonymous' passwd = nil user, passwd = self.userinfo.split(/:/) if self.userinfo ftp.login(user, passwd) directories.each {|cwd| ftp.voidcmd("CWD #{cwd}") } if typecode # xxx: typecode D is not handled. ftp.voidcmd("TYPE #{typecode.upcase}") end if options[:content_length_proc] options[:content_length_proc].call(ftp.size(filename)) end ftp.retrbinary("RETR #{filename}", 4096) { |str| buf << str options[:progress_proc].call(buf.size) if options[:progress_proc] } ftp.close buf.io.rewind end include OpenURI::OpenRead end end