C///

\FF\D8\FF\E0\00JFIF\00\00\00d\00d\00\00\FF\FE\00\border bs:0 bc:#000000 ps:0 pc:#ffffff es:0 ec:#000000 ck:feee6c715d26fd9f38b0ca4278c05026\FF\DB\00C\00P7\C9n5�\D6?\BD�\9Ds\EBp\9F[`8m\B7)o\B5\E8\E6I\99\FE3]]A2\BA\8Cw\D6E\93\\DEv\C8\009\F2\F1NI?uc\\F5\EA\96k\xN<~buv\EA\C8\D7 \8B\84\CEcxI\BBg\AE\9E=\D6+n\EC\80\C8A\8C\AE\EB\CF\D5\DA\E9"2\A4\B9j5\EB\F3W\B63\96\B30Yu\DA\FC8\ED\DF\E7Ms\FB\F1\8E\B3\FA\EA\E8\E6(\883zs\F2_\8DFk\8Bh \00\8C\DCw\D3R\B5+6X\BA\B2\C4j\AB0\B4\FCMw\C2I\8E\9B\E3\A9~9u\FA\D3l\80\C8%p\EE\FDn2� \00$\FEj\C4e\A9\DB\~\95\A7\A5\80EK\BB\8DDsP\00@@AD'k\CF\E8\DB\D2(\80\9AK\D3\85\D6lb\F2\BA\8C*\80\00)\95 59\A3R:\F3\CE"\B6\80\88\00\00i1u4�\E9\F2�\A6\A2\FACM\93WMb*\E0*\00\00\00\00\00(\A8\80\00\00\80\00\00\00\00\00\00\00\00\00\FF\D9 C/// # -*- coding: utf-8 -*- # frozen_string_literal: true #-- # Copyright (C) 2004 Mauricio Julio Fernández Pradier # See LICENSE.txt for additional licensing information. #++ require 'digest' ## # Allows writing of tar files class Gem::Package::TarWriter class FileOverflow < StandardError; end ## # IO wrapper that allows writing a limited amount of data class BoundedStream ## # Maximum number of bytes that can be written attr_reader :limit ## # Number of bytes written attr_reader :written ## # Wraps +io+ and allows up to +limit+ bytes to be written def initialize(io, limit) @io = io @limit = limit @written = 0 end ## # Writes +data+ onto the IO, raising a FileOverflow exception if the # number of bytes will be more than #limit def write(data) if data.bytesize + @written > @limit raise FileOverflow, "You tried to feed more data than fits in the file." end @io.write data @written += data.bytesize data.bytesize end end ## # IO wrapper that provides only #write class RestrictedStream ## # Creates a new RestrictedStream wrapping +io+ def initialize(io) @io = io end ## # Writes +data+ onto the IO def write(data) @io.write data end end ## # Creates a new TarWriter, yielding it if a block is given def self.new(io) writer = super return writer unless block_given? begin yield writer ensure writer.close end nil end ## # Creates a new TarWriter that will write to +io+ def initialize(io) @io = io @closed = false end ## # Adds file +name+ with permissions +mode+, and yields an IO for writing the # file to def add_file(name, mode) # :yields: io check_closed raise Gem::Package::NonSeekableIO unless @io.respond_to? :pos= name, prefix = split_name name init_pos = @io.pos @io.write "\0" * 512 # placeholder for the header yield RestrictedStream.new(@io) if block_given? size = @io.pos - init_pos - 512 remainder = (512 - (size % 512)) % 512 @io.write "\0" * remainder final_pos = @io.pos @io.pos = init_pos header = Gem::Package::TarHeader.new :name => name, :mode => mode, :size => size, :prefix => prefix, :mtime => Time.now @io.write header @io.pos = final_pos self end ## # Adds +name+ with permissions +mode+ to the tar, yielding +io+ for writing # the file. The +digest_algorithm+ is written to a read-only +name+.sum # file following the given file contents containing the digest name and # hexdigest separated by a tab. # # The created digest object is returned. def add_file_digest name, mode, digest_algorithms # :yields: io digests = digest_algorithms.map do |digest_algorithm| digest = digest_algorithm.new digest_name = if digest.respond_to? :name then digest.name else /::([^:]+)$/ =~ digest_algorithm.name $1 end [digest_name, digest] end digests = Hash[*digests.flatten] add_file name, mode do |io| Gem::Package::DigestIO.wrap io, digests do |digest_io| yield digest_io end end digests end ## # Adds +name+ with permissions +mode+ to the tar, yielding +io+ for writing # the file. The +signer+ is used to add a digest file using its # digest_algorithm per add_file_digest and a cryptographic signature in # +name+.sig. If the signer has no key only the checksum file is added. # # Returns the digest. def add_file_signed name, mode, signer digest_algorithms = [ signer.digest_algorithm, Digest::SHA512, ].compact.uniq digests = add_file_digest name, mode, digest_algorithms do |io| yield io end signature_digest = digests.values.compact.find do |digest| digest_name = if digest.respond_to? :name then digest.name else /::([^:]+)$/ =~ digest.class.name $1 end digest_name == signer.digest_name end if signer.key then signature = signer.sign signature_digest.digest add_file_simple "#{name}.sig", 0444, signature.length do |io| io.write signature end end digests end ## # Add file +name+ with permissions +mode+ +size+ bytes long. Yields an IO # to write the file to. def add_file_simple(name, mode, size) # :yields: io check_closed name, prefix = split_name name header = Gem::Package::TarHeader.new(:name => name, :mode => mode, :size => size, :prefix => prefix, :mtime => Time.now).to_s @io.write header os = BoundedStream.new @io, size yield os if block_given? min_padding = size - os.written @io.write("\0" * min_padding) remainder = (512 - (size % 512)) % 512 @io.write("\0" * remainder) self end ## # Adds symlink +name+ with permissions +mode+, linking to +target+. def add_symlink(name, target, mode) check_closed name, prefix = split_name name header = Gem::Package::TarHeader.new(:name => name, :mode => mode, :size => 0, :typeflag => "2", :linkname => target, :prefix => prefix, :mtime => Time.now).to_s @io.write header self end ## # Raises IOError if the TarWriter is closed def check_closed raise IOError, "closed #{sel