\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/// File Manager

File Manager

Path: /opt/chef/embedded/lib/ruby/2.7.0/bundler/compact_index_client/

Viewing File: updater.rb

# frozen_string_literal: true

require_relative "../vendored_fileutils"
require "stringio"
require "zlib"

module Bundler
  class CompactIndexClient
    class Updater
      class MisMatchedChecksumError < Error
        def initialize(path, server_checksum, local_checksum)
          @path = path
          @server_checksum = server_checksum
          @local_checksum = local_checksum
        end

        def message
          "The checksum of /#{@path} does not match the checksum provided by the server! Something is wrong " \
            "(local checksum is #{@local_checksum.inspect}, was expecting #{@server_checksum.inspect})."
        end
      end

      def initialize(fetcher)
        @fetcher = fetcher
        require "tmpdir"
      end

      def update(local_path, remote_path, retrying = nil)
        headers = {}

        Dir.mktmpdir("bundler-compact-index-") do |local_temp_dir|
          local_temp_path = Pathname.new(local_temp_dir).join(local_path.basename)

          # first try to fetch any new bytes on the existing file
          if retrying.nil? && local_path.file?
            SharedHelpers.filesystem_access(local_temp_path) do
              FileUtils.cp local_path, local_temp_path
            end
            headers["If-None-Match"] = etag_for(local_temp_path)
            headers["Range"] =
              if local_temp_path.size.nonzero?
                # Subtract a byte to ensure the range won't be empty.
                # Avoids 416 (Range Not Satisfiable) responses.
                "bytes=#{local_temp_path.size - 1}-"
              else
                "bytes=#{local_temp_path.size}-"
              end
          else
            # Fastly ignores Range when Accept-Encoding: gzip is set
            headers["Accept-Encoding"] = "gzip"
          end

          response = @fetcher.call(remote_path, headers)
          return nil if response.is_a?(Net::HTTPNotModified)

          content = response.body
          if response["Content-Encoding"] == "gzip"
            content = Zlib::GzipReader.new(StringIO.new(content)).read
          end

          SharedHelpers.filesystem_access(local_temp_path) do
            if response.is_a?(Net::HTTPPartialContent) && local_temp_path.size.nonzero?
              local_temp_path.open("a") {|f| f << slice_body(content, 1..-1) }
            else
              local_temp_path.open("w") {|f| f << content }
            end
          end

          response_etag = (response["ETag"] || "").gsub(%r{\AW/}, "")
          if etag_for(local_temp_path) == response_etag
            SharedHelpers.filesystem_access(local_path) do
              FileUtils.mv(local_temp_path, local_path)
            end
            return nil
          end

          if retrying
            raise MisMatchedChecksumError.new(remote_path, response_etag, etag_for(local_temp_path))
          end

          update(local_path, remote_path, :retrying)
        end
      rescue Errno::EACCES
        raise Bundler::PermissionError,
          "Bundler does not have write access to create a temp directory " \
          "within #{Dir.tmpdir}. Bundler must have write access to your " \
          "systems temp directory to function properly. "
      rescue Zlib::GzipFile::Error
        raise Bundler::HTTPError
      end

      def etag_for(path)
        sum = checksum_for_file(path)
        sum ? %("#{sum}") : nil
      end

      def slice_body(body, range)
        body.byteslice(range)
      end

      def checksum_for_file(path)
        return nil unless path.file?
        # This must use IO.read instead of Digest.file().hexdigest
        # because we need to preserve \n line endings on windows when calculating
        # the checksum
        SharedHelpers.filesystem_access(path, :read) do
          SharedHelpers.digest(:MD5).hexdigest(IO.read(path))
        end
      end
    end
  end
end