Class: Zip::Entry

Inherits:
Object
  • Object
show all
Includes:
Dirtyable
Defined in:
lib/zip/entry.rb

Overview

Zip::Entry represents an entry in a Zip archive.

Direct Known Subclasses

StreamableDirectory, StreamableStream

Constant Summary collapse

STORED =

Constant used to specify that the entry is stored (i.e., not compressed).

::Zip::COMPRESSION_METHOD_STORE
DEFLATED =

Constant used to specify that the entry is deflated (i.e., compressed).

::Zip::COMPRESSION_METHOD_DEFLATE
EFS =

Language encoding flag (EFS) bit

0b100000000000
COMPRESSION_LEVEL_SUPERFAST_GPFLAG =

Compression level flags (used as part of the gp flags).

0b110
COMPRESSION_LEVEL_FAST_GPFLAG =

:nodoc:

0b100
COMPRESSION_LEVEL_MAX_GPFLAG =

:nodoc:

0b010

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Dirtyable

#dirty?, included

Constructor Details

#initialize(zipfile = '', name = '', comment: '', size: nil, compressed_size: 0, crc: 0, compression_method: DEFLATED, compression_level: ::Zip.default_compression, time: ::Zip::DOSTime.now, extra: ::Zip::ExtraField.new) ⇒ Entry

Create a new Zip::Entry.



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# File 'lib/zip/entry.rb', line 76

def initialize(
  zipfile = '', name = '',
  comment: '', size: nil, compressed_size: 0, crc: 0,
  compression_method: DEFLATED,
  compression_level: ::Zip.default_compression,
  time: ::Zip::DOSTime.now, extra: ::Zip::ExtraField.new
)
  super()
  @name = name
  check_name(@name)

  set_default_vars_values
  @fstype = ::Zip::RUNNING_ON_WINDOWS ? ::Zip::FSTYPE_FAT : ::Zip::FSTYPE_UNIX

  @zipfile            = zipfile
  @comment            = comment || ''
  @compression_method = compression_method || DEFLATED
  @compression_level  = compression_level || ::Zip.default_compression
  @compressed_size    = compressed_size || 0
  @crc                = crc || 0
  @size               = size
  @time               = case time
                        when ::Zip::DOSTime
                          time
                        when Time
                          ::Zip::DOSTime.from_time(time)
                        else
                          ::Zip::DOSTime.now
                        end
  @extra              =
    extra.kind_of?(ExtraField) ? extra : ExtraField.new(extra.to_s)

  set_compression_level_flags
end

Instance Attribute Details

#comment ⇒ Object

:nodoc:



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# File 'lib/zip/entry.rb', line 27

def comment
  @comment
end

#compressed_size ⇒ Object

:nodoc:



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# File 'lib/zip/entry.rb', line 27

def compressed_size
  @compressed_size
end

#compression_level ⇒ Object (readonly)

:nodoc:



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# File 'lib/zip/entry.rb', line 34

def compression_level
  @compression_level
end

#crc ⇒ Object

Returns the value of attribute crc.



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# File 'lib/zip/entry.rb', line 31

def crc
  @crc
end

#external_file_attributes ⇒ Object

Returns the value of attribute external_file_attributes.



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# File 'lib/zip/entry.rb', line 31

def external_file_attributes
  @external_file_attributes
end

#extra ⇒ Object (readonly)

:nodoc:



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# File 'lib/zip/entry.rb', line 34

def extra
  @extra
end

#filepath ⇒ Object (readonly)

:nodoc:



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# File 'lib/zip/entry.rb', line 34

def filepath
  @filepath
end

#follow_symlinks ⇒ Object

:nodoc:



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# File 'lib/zip/entry.rb', line 27

def follow_symlinks
  @follow_symlinks
end

#fstype ⇒ Object

Returns the value of attribute fstype.



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# File 'lib/zip/entry.rb', line 31

def fstype
  @fstype
end

#gp_flags ⇒ Object

Returns the value of attribute gp_flags.



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# File 'lib/zip/entry.rb', line 31

def gp_flags
  @gp_flags
end

#internal_file_attributes ⇒ Object

Returns the value of attribute internal_file_attributes.



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# File 'lib/zip/entry.rb', line 31

def internal_file_attributes
  @internal_file_attributes
end

#local_header_offset ⇒ Object

Returns the value of attribute local_header_offset.



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# File 'lib/zip/entry.rb', line 31

def local_header_offset
  @local_header_offset
end

#name ⇒ Object

:nodoc:



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# File 'lib/zip/entry.rb', line 27

def name
  @name
end

#restore_ownership ⇒ Object

:nodoc:



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# File 'lib/zip/entry.rb', line 27

def restore_ownership
  @restore_ownership
end

#restore_permissions ⇒ Object

:nodoc:



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# File 'lib/zip/entry.rb', line 27

def restore_permissions
  @restore_permissions
end

#restore_times ⇒ Object

:nodoc:



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# File 'lib/zip/entry.rb', line 27

def restore_times
  @restore_times
end

#size ⇒ Object

The uncompressed size of the entry.



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# File 'lib/zip/entry.rb', line 121

def size
  @size || 0
end

#unix_gid ⇒ Object

:nodoc:



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# File 'lib/zip/entry.rb', line 27

def unix_gid
  @unix_gid
end

#unix_perms ⇒ Object

:nodoc:



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# File 'lib/zip/entry.rb', line 27

def unix_perms
  @unix_perms
end

#unix_uid ⇒ Object

:nodoc:



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# File 'lib/zip/entry.rb', line 27

def unix_uid
  @unix_uid
end

Class Method Details

.read_c_dir_entry(io) ⇒ Object

:nodoc:



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# File 'lib/zip/entry.rb', line 337

def read_c_dir_entry(io) # :nodoc:
  path = if io.respond_to?(:path)
           io.path
         else
           io
         end
  entry = new(path)
  entry.read_c_dir_entry(io)
  entry
rescue Error
  nil
end

.read_local_entry(io) ⇒ Object

:nodoc:



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# File 'lib/zip/entry.rb', line 350

def read_local_entry(io) # :nodoc:
  entry = new(io)
  entry.read_local_entry(io)
  entry
rescue SplitArchiveError
  raise
rescue Error
  nil
end

Instance Method Details

#<=>(other) ⇒ Object

:nodoc:



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# File 'lib/zip/entry.rb', line 662

def <=>(other) # :nodoc:
  to_s <=> other.to_s
end

#==(other) ⇒ Object

:nodoc:



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# File 'lib/zip/entry.rb', line 653

def ==(other) # :nodoc:
  return false unless other.class == self.class

  # Compares contents of local entry and exposed fields
  %w[compression_method crc compressed_size size name extra filepath time].all? do |k|
    other.__send__(k.to_sym) == __send__(k.to_sym)
  end
end

#absolute_time? ⇒ Boolean

Does this entry return time fields with accurate timezone information?

Returns:

  • (Boolean) 


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# File 'lib/zip/entry.rb', line 181

def absolute_time?
  @extra.member?(:universaltime) || @extra.member?(:ntfs)
end

#aes? ⇒ Boolean

Is this entry encrypted with AES encryption?

Returns:

  • (Boolean) 


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# File 'lib/zip/entry.rb', line 207

def aes?
  !@extra[:aes].nil?
end

#atime ⇒ Object

Get the last access time of this entry, if available.



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# File 'lib/zip/entry.rb', line 144

def atime
  time(component: :atime)
end

#atime=(value) ⇒ Object

Set the last access time of this entry.



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# File 'lib/zip/entry.rb', line 171

def atime=(value)
  send(:time=, value, component: :atime)
end

#calculate_local_header_size ⇒ Object

:nodoc:



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# File 'lib/zip/entry.rb', line 274

def calculate_local_header_size # :nodoc:
  LOCAL_ENTRY_STATIC_HEADER_LENGTH + name_size + extra_size
end

#cdir_header_size ⇒ Object

:nodoc:



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# File 'lib/zip/entry.rb', line 290

def cdir_header_size # :nodoc:
  CDIR_ENTRY_STATIC_HEADER_LENGTH + name_size +
    (@extra ? @extra.c_dir_size : 0) + comment_size
end

#check_c_dir_entry_comment_size ⇒ Object

:nodoc:

Raises:



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# File 'lib/zip/entry.rb', line 518

def check_c_dir_entry_comment_size # :nodoc:
  return if @comment && @comment.bytesize == @comment_length

  raise ::Zip::Error, 'Truncated cdir zip entry header'
end

#check_c_dir_entry_signature ⇒ Object

:nodoc:

Raises:



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# File 'lib/zip/entry.rb', line 512

def check_c_dir_entry_signature # :nodoc:
  return if @header_signature == ::Zip::CENTRAL_DIRECTORY_ENTRY_SIGNATURE

  raise Error, "Zip local header magic not found at location '#{local_header_offset}'"
end

#check_c_dir_entry_static_header_length(buf) ⇒ Object

:nodoc:

Raises:



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# File 'lib/zip/entry.rb', line 506

def check_c_dir_entry_static_header_length(buf) # :nodoc:
  return unless buf.nil? || buf.bytesize != ::Zip::CDIR_ENTRY_STATIC_HEADER_LENGTH

  raise Error, 'Premature end of file. Not enough data for zip cdir entry header'
end

#check_name(name) ⇒ Object

:nodoc:

Raises:



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# File 'lib/zip/entry.rb', line 70

def check_name(name) # :nodoc:
  raise EntryNameError, name if name.start_with?('/')
  raise EntryNameError if name.length > 65_535
end

#clean_up ⇒ Object

:nodoc:



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# File 'lib/zip/entry.rb', line 757

def clean_up # :nodoc:
  @dirty = false # Any changes are written at this point.
end

#comment_size ⇒ Object

:nodoc:



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# File 'lib/zip/entry.rb', line 270

def comment_size # :nodoc:
  @comment ? @comment.bytesize : 0
end

#compression_method ⇒ Object

Return the compression method for this entry.

Returns STORED if the entry is a directory or if the compression level is 0.



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# File 'lib/zip/entry.rb', line 189

def compression_method
  return STORED if ftype == :directory || @compression_level == 0

  @compression_method
end

#compression_method=(method) ⇒ Object

Set the compression method for this entry.



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# File 'lib/zip/entry.rb', line 196

def compression_method=(method)
  @dirty = true
  @compression_method = (ftype == :directory ? STORED : method)
end

#ctime ⇒ Object

Get the creation time of this entry, if available.



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# File 'lib/zip/entry.rb', line 149

def ctime
  time(component: :ctime)
end

#ctime=(value) ⇒ Object

Set the creation time of this entry.



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# File 'lib/zip/entry.rb', line 176

def ctime=(value)
  send(:time=, value, component: :ctime)
end

#encrypted? ⇒ Boolean

Is this entry encrypted?

Returns:

  • (Boolean) 


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# File 'lib/zip/entry.rb', line 112

def encrypted?
  gp_flags & 1 == 1
end

#extra_size ⇒ Object

:nodoc:



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# File 'lib/zip/entry.rb', line 266

def extra_size # :nodoc:
  @extra ? @extra.local_size : 0
end

#extract(entry_path = @name, destination_directory: '.', create_parent_directories: false, &block) ⇒ Object

Extracts this entry to a file at entry_path, with destination_directory as the base location in the filesystem.

NB: The caller is responsible for making sure destination_directory is safe, if it is passed.

create_parent_directories, if true, creates any missing intermediate directories for a file entry before writing it. This defaults to false: a missing intermediate directory usually means an earlier entry (e.g. a symlink) was deliberately skipped as unsafe, and letting a later entry silently succeed by re-creating that path as a plain directory would mask that. Bulk operations such as extract_all, which have no such earlier-entry to skip past, opt into this.



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# File 'lib/zip/entry.rb', line 312

def extract(entry_path = @name, destination_directory: '.',
            create_parent_directories: false, &block)
  dest_dir = ::File.absolute_path(destination_directory || '.')
  extract_path = ::File.absolute_path(::File.join(dest_dir, entry_path))

  unless extract_path.start_with?(dest_dir + ::File::SEPARATOR) || dest_dir == ::File::SEPARATOR
    warn "WARNING: skipped extracting '#{@name}' to '#{extract_path}' as unsafe."
    return self
  end

  block ||= proc { ::Zip.on_exists_proc }

  raise "unknown file type #{inspect}" unless directory? || file? || symlink?

  ::FileUtils.mkdir_p(::File.dirname(extract_path)) if create_parent_directories && file?

  __send__(:"create_#{ftype}", extract_path, &block)
  self
end

#file_stat(path) ⇒ Object

:nodoc:



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# File 'lib/zip/entry.rb', line 554

def file_stat(path) # :nodoc:
  if @follow_symlinks
    ::File.stat(path)
  else
    ::File.lstat(path)
  end
end

#file_type_is?(type) ⇒ Boolean

:nodoc:

Returns:

  • (Boolean) 


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# File 'lib/zip/entry.rb', line 226

def file_type_is?(type) # :nodoc:
  ftype == type
end

#ftype ⇒ Object

:nodoc:



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# File 'lib/zip/entry.rb', line 230

def ftype # :nodoc:
  @ftype ||= name_is_directory? ? :directory : :file
end

#gather_fileinfo_from_srcpath(src_path) ⇒ Object

:nodoc:



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# File 'lib/zip/entry.rb', line 701

def gather_fileinfo_from_srcpath(src_path) # :nodoc:
  stat   = file_stat(src_path)
  @ftype = case stat.ftype
           when 'file'
             if name_is_directory?
               raise ArgumentError,
                     "entry name '#{@name}' indicates a directory entry, but " \
                     "'#{src_path}' is not a directory"
             end
             :file
           when 'directory'
             @name += '/' unless name_is_directory?
             :directory
           when 'link'
             if name_is_directory?
               raise ArgumentError,
                     "entry name '#{@name}' indicates a directory entry, but " \
                     "'#{src_path}' is not a directory"
             end
             :symlink
           else
             raise "unknown file type: #{src_path.inspect} #{stat.inspect}"
           end

  @filepath = src_path
  @size = stat.size
  get_extra_attributes_from_path(@filepath)
end

#get_extra_attributes_from_path(path) ⇒ Object

:nodoc:



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# File 'lib/zip/entry.rb', line 562

def get_extra_attributes_from_path(path) # :nodoc:
  stat = file_stat(path)
  @time = DOSTime.from_time(stat.mtime)
  return if ::Zip::RUNNING_ON_WINDOWS

  @unix_uid   = stat.uid
  @unix_gid   = stat.gid
  @unix_perms = stat.mode & 0o7777
end

#get_input_stream(decrypter: nil, &block) ⇒ Object

Returns an IO like object for the given ZipEntry. Optional decrypter can be provided for an encrypted entry Warning: may behave weird with symlinks.



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# File 'lib/zip/entry.rb', line 669

def get_input_stream(decrypter: nil, &block)
  if ftype == :directory
    yield ::Zip::NullInputStream if block
    ::Zip::NullInputStream
  elsif @filepath
    case ftype
    when :file
      ::File.open(@filepath, 'rb', &block)
    when :symlink
      linkpath = ::File.readlink(@filepath)
      stringio = ::StringIO.new(linkpath)
      yield(stringio) if block
      stringio
    else
      raise "unknown @file_type #{ftype}"
    end
  else
    zis = ::Zip::InputStream.new(@zipfile, offset: local_header_offset, decrypter: decrypter)
    zis.instance_variable_set(:@complete_entry, self)
    zis.get_next_entry
    if block
      begin
        yield(zis)
      ensure
        zis.close
      end
    else
      zis
    end
  end
end

#get_raw_input_stream(&block) ⇒ Object

:nodoc:



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# File 'lib/zip/entry.rb', line 749

def get_raw_input_stream(&block) # :nodoc:
  if @zipfile.respond_to?(:seek) && @zipfile.respond_to?(:read)
    yield @zipfile
  else
    ::File.open(@zipfile, 'rb', &block)
  end
end

#incomplete? ⇒ Boolean

:nodoc:

Returns:

  • (Boolean) 


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# File 'lib/zip/entry.rb', line 116

def incomplete? # :nodoc:
  (gp_flags & 8 == 8) && (crc == 0 || size == 0 || compressed_size == 0)
end

#local_entry_offset ⇒ Object

:nodoc:



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# File 'lib/zip/entry.rb', line 258

def local_entry_offset # :nodoc:
  local_header_offset + @local_header_size
end

#name_is_directory? ⇒ Boolean

:nodoc:

Returns:

  • (Boolean) 


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# File 'lib/zip/entry.rb', line 241

def name_is_directory? # :nodoc:
  @name.end_with?('/')
end

#name_safe? ⇒ Boolean

Is the name a relative path, free of .. patterns that could lead to path traversal attacks? This does NOT handle symlinks; if the path contains symlinks, this check is NOT enough to guarantee safety.

Returns:

  • (Boolean) 


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# File 'lib/zip/entry.rb', line 248

def name_safe? # :nodoc:
  cleanpath = Pathname.new(@name).cleanpath
  return false unless cleanpath.relative?

  root = ::File::SEPARATOR
  naive = Regexp.escape(::File.join(root, cleanpath.to_s))
  # Allow for Windows drive mappings at the root.
  ::File.absolute_path(cleanpath.to_s, root).match?(/([A-Z]:)?#{naive}/i)
end

#name_size ⇒ Object

:nodoc:



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# File 'lib/zip/entry.rb', line 262

def name_size # :nodoc:
  @name ? @name.bytesize : 0
end

#next_header_offset ⇒ Object

:nodoc:



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# File 'lib/zip/entry.rb', line 295

def next_header_offset # :nodoc:
  local_entry_offset + compressed_size
end

#pack_c_dir_entry ⇒ Object

:nodoc:



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# File 'lib/zip/entry.rb', line 599

def pack_c_dir_entry # :nodoc:
  zip64 = @extra[:zip64]
  [
    @header_signature,
    @version, # version of encoding software
    @fstype, # filesystem type
    @version_needed_to_extract, # @versionNeededToExtract
    @gp_flags, # @gp_flags
    stored_compression_method,
    @time.to_binary_dos_time, # @last_mod_time
    @time.to_binary_dos_date, # @last_mod_date
    @crc,
    zip64 && zip64.compressed_size ? 0xFFFFFFFF : @compressed_size,
    zip64 && zip64.original_size ? 0xFFFFFFFF : (@size || 0),
    name_size,
    @extra ? @extra.c_dir_size : 0,
    comment_size,
    zip64 && zip64.disk_start_number ? 0xFFFF : 0, # disk number start
    @internal_file_attributes, # file type (binary=0, text=1)
    @external_file_attributes, # native filesystem attributes
    zip64 && zip64.relative_header_offset ? 0xFFFFFFFF : @local_header_offset
  ].pack('VCCvvvvvVVVvvvvvVV')
end

#pack_local_entry ⇒ Object

:nodoc:



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# File 'lib/zip/entry.rb', line 420

def pack_local_entry # :nodoc:
  zip64 = @extra[:zip64]
  [::Zip::LOCAL_ENTRY_SIGNATURE,
   @version_needed_to_extract, # version needed to extract
   @gp_flags, # @gp_flags
   stored_compression_method,
   @time.to_binary_dos_time, # @last_mod_time
   @time.to_binary_dos_date, # @last_mod_date
   @crc,
   zip64 && zip64.compressed_size ? 0xFFFFFFFF : @compressed_size,
   zip64 && zip64.original_size ? 0xFFFFFFFF : (@size || 0),
   name_size,
   @extra ? @extra.local_size : 0].pack('VvvvvvVVVvv')
end

#parent_as_string ⇒ Object

:nodoc:



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# File 'lib/zip/entry.rb', line 743

def parent_as_string # :nodoc:
  entry_name  = name.chomp('/')
  slash_index = entry_name.rindex('/')
  slash_index ? entry_name.slice(0, slash_index + 1) : nil
end

#prep_aes_extra(vendor_version, strength) ⇒ Object

Called by AESEncrypter#prepare_entry before the local header is first written, so the extra field is in place before its size is measured. Directories have no content to encrypt, so they are left untouched.



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# File 'lib/zip/entry.rb', line 214

def prep_aes_extra(vendor_version, strength) # :nodoc:
  return if directory?

  @version_needed_to_extract =
    [@version_needed_to_extract, Zip::VERSION_NEEDED_TO_EXTRACT_AES].max
  aes = @extra[:aes] || @extra.create(:aes)
  aes.vendor_version = vendor_version
  aes.vendor_id = 'AE'
  aes.encryption_strength = strength
  aes.compression_method = compression_method
end

#read_c_dir_entry(io) ⇒ Object

:nodoc:



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# File 'lib/zip/entry.rb', line 532

def read_c_dir_entry(io) # :nodoc:
  @dirty = false # No changes at this point.
  static_sized_fields_buf = io.read(::Zip::CDIR_ENTRY_STATIC_HEADER_LENGTH)
  check_c_dir_entry_static_header_length(static_sized_fields_buf)
  unpack_c_dir_entry(static_sized_fields_buf)
  check_c_dir_entry_signature
  set_time(@last_mod_date, @last_mod_time)

  @name = io.read(@name_length)
  if ::Zip.force_entry_names_encoding
    @name.force_encoding(::Zip.force_entry_names_encoding)
  end
  @name.tr!('\\', '/') # Normalise filepath separators after encoding set.

  read_extra_field(io.read(@extra_length))
  @comment = io.read(@comment_length)
  check_c_dir_entry_comment_size
  set_ftype_from_c_dir_entry
  parse_zip64_extra(false)
  parse_aes_extra
end

#read_extra_field(buf, local: false) ⇒ Object

:nodoc:



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# File 'lib/zip/entry.rb', line 524

def read_extra_field(buf, local: false) # :nodoc:
  if @extra.kind_of?(::Zip::ExtraField)
    @extra.merge(buf, local: local) if buf
  else
    @extra = ::Zip::ExtraField.new(buf, local: local)
  end
end

#read_local_entry(io) ⇒ Object

:nodoc:



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# File 'lib/zip/entry.rb', line 376

def read_local_entry(io) # :nodoc:
  @dirty = false # No changes at this point.
  current_offset = io.tell

  read_local_header_fields(io)

  if @header_signature == SPLIT_FILE_SIGNATURE
    raise SplitArchiveError if current_offset.zero?

    # Rewind, skipping the data descriptor, then try to read the local header again.
    current_offset += 16
    io.seek(current_offset)
    read_local_header_fields(io)
  end

  unless @header_signature == LOCAL_ENTRY_SIGNATURE
    raise Error, "Zip local header magic not found at location '#{current_offset}'"
  end

  @local_header_offset = current_offset

  set_time(@last_mod_date, @last_mod_time)

  @name = io.read(@name_length)
  if ::Zip.force_entry_names_encoding
    @name.force_encoding(::Zip.force_entry_names_encoding)
  end
  @name.tr!('\\', '/') # Normalise filepath separators after encoding set.

  # We need to do this here because `initialize` has so many side-effects.
  # :-(
  @ftype = name_is_directory? ? :directory : :file

  extra = io.read(@extra_length)
  if extra && extra.bytesize != @extra_length
    raise ::Zip::Error, 'Truncated local zip entry header'
  end

  read_extra_field(extra, local: true)
  parse_zip64_extra(true)
  parse_aes_extra
  @local_header_size = calculate_local_header_size
end

#set_default_vars_values ⇒ Object

:nodoc:



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# File 'lib/zip/entry.rb', line 42

def set_default_vars_values # :nodoc:
  @local_header_offset      = 0
  @local_header_size        = nil # not known until local entry is created or read
  @internal_file_attributes = 1
  @external_file_attributes = 0
  @header_signature         = ::Zip::CENTRAL_DIRECTORY_ENTRY_SIGNATURE

  @version_needed_to_extract = VERSION_NEEDED_TO_EXTRACT
  @version                   = VERSION_MADE_BY

  @ftype           = nil          # unspecified or unknown
  @filepath        = nil
  @gp_flags        = 0
  if ::Zip.unicode_names
    @gp_flags |= EFS
    @version = 63
  end
  @follow_symlinks = false

  @restore_times       = DEFAULT_RESTORE_OPTIONS[:restore_times]
  @restore_permissions = DEFAULT_RESTORE_OPTIONS[:restore_permissions]
  @restore_ownership   = DEFAULT_RESTORE_OPTIONS[:restore_ownership]
  # BUG: need an extra field to support uid/gid's
  @unix_uid            = nil
  @unix_gid            = nil
  @unix_perms          = nil
end

#set_extra_attributes_on_path(dest_path) ⇒ Object

rubocop:enable Style/GuardClause



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# File 'lib/zip/entry.rb', line 585

def set_extra_attributes_on_path(dest_path) # :nodoc:
  return unless file? || directory?

  case @fstype
  when ::Zip::FSTYPE_UNIX
    set_unix_attributes_on_path(dest_path)
  end

  # Restore the timestamp on a file. This will either have come from the
  # original source file that was copied into the archive, or from the
  # creation date of the archive if there was no original source file.
  ::FileUtils.touch(dest_path, mtime: time) if @restore_times
end

#set_ftype_from_c_dir_entry ⇒ Object

:nodoc:



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# File 'lib/zip/entry.rb', line 476

def set_ftype_from_c_dir_entry # :nodoc:
  @ftype = case @fstype
           when ::Zip::FSTYPE_UNIX
             @unix_perms = (@external_file_attributes >> 16) & 0o7777
             case (@external_file_attributes >> 28)
             when ::Zip::FILE_TYPE_DIR
               :directory
             when ::Zip::FILE_TYPE_FILE
               :file
             when ::Zip::FILE_TYPE_SYMLINK
               :symlink
             else
               # Best case guess for whether it is a file or not.
               # Otherwise this would be set to unknown and that
               # entry would never be able to be extracted.
               if name_is_directory?
                 :directory
               else
                 :file
               end
             end
           else
             if name_is_directory?
               :directory
             else
               :file
             end
           end
end

#set_unix_attributes_on_path(dest_path) ⇒ Object

rubocop:disable Style/GuardClause



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# File 'lib/zip/entry.rb', line 573

def set_unix_attributes_on_path(dest_path) # :nodoc:
  # Ignore setuid/setgid bits by default. Honour if @restore_ownership.
  unix_perms_mask = (@restore_ownership ? 0o7777 : 0o1777)
  if @restore_permissions && @unix_perms
    ::FileUtils.chmod(@unix_perms & unix_perms_mask, dest_path)
  end
  if @restore_ownership && @unix_uid && @unix_gid && ::Process.egid == 0
    ::FileUtils.chown(@unix_uid, @unix_gid, dest_path)
  end
end

#time(component: :mtime) ⇒ Object Also known as: mtime

Get a timestamp component of this entry.

Returns modification time by default.



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# File 'lib/zip/entry.rb', line 128

def time(component: :mtime)
  time =
    if @extra[:universaltime]
      @extra[:universaltime].send(component)
    elsif @extra[:ntfs]
      @extra[:ntfs].send(component)
    end

  # Standard time field in central directory has local time
  # under archive creator. Then, we can't get timezone.
  time || (@time if component == :mtime)
end

#time=(value, component: :mtime) ⇒ Object Also known as: mtime=

Set a timestamp component of this entry.

Sets modification time by default.



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# File 'lib/zip/entry.rb', line 156

def time=(value, component: :mtime)
  @dirty = true
  unless @extra.member?(:universaltime) || @extra.member?(:ntfs)
    @extra.create(:universaltime)
  end

  value = DOSTime.from_time(value)
  comp = "#{component}=" unless component.to_s.end_with?('=')
  (@extra[:universaltime] || @extra[:ntfs]).send(comp, value)
  @time = value if component == :mtime
end

#to_s ⇒ Object

:nodoc:



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# File 'lib/zip/entry.rb', line 332

def to_s # :nodoc:
  @name
end

#unpack_c_dir_entry(buf) ⇒ Object

:nodoc:



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# File 'lib/zip/entry.rb', line 455

def unpack_c_dir_entry(buf) # :nodoc:
  @header_signature,
    @version, # version of encoding software
    @fstype, # filesystem type
    @version_needed_to_extract,
    @gp_flags,
    @compression_method,
    @last_mod_time,
    @last_mod_date,
    @crc,
    @compressed_size,
    @size,
    @name_length,
    @extra_length,
    @comment_length,
    _, # diskNumberStart
    @internal_file_attributes,
    @external_file_attributes,
    @local_header_offset = buf.unpack('VCCvvvvvVVVvvvvvVV')
end

#unpack_local_entry(buf) ⇒ Object

:nodoc:



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# File 'lib/zip/entry.rb', line 361

def unpack_local_entry(buf) # :nodoc:
  @header_signature,
    @version,
    @fstype,
    @gp_flags,
    @compression_method,
    @last_mod_time,
    @last_mod_date,
    @crc,
    @compressed_size,
    @size,
    @name_length,
    @extra_length = buf.unpack('VCCvvvvVVVvv')
end

#verify_local_header_size! ⇒ Object

check before rewriting an entry (after file sizes are known) that we didn't change the header size (and thus clobber file data or something)

Raises:



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# File 'lib/zip/entry.rb', line 280

def verify_local_header_size! # :nodoc:
  return if @local_header_size.nil?

  new_size = calculate_local_header_size
  return unless @local_header_size != new_size

  raise Error,
        "Local header size changed (#{@local_header_size} -> #{new_size})"
end

#write_c_dir_entry(io, suppress_extra_fields: false) ⇒ Object

:nodoc:



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# File 'lib/zip/entry.rb', line 623

def write_c_dir_entry(io, suppress_extra_fields: false) # :nodoc:
  prep_cdir_zip64_extra

  case @fstype
  when ::Zip::FSTYPE_UNIX
    ft = case ftype
         when :file
           @unix_perms ||= 0o644
           ::Zip::FILE_TYPE_FILE
         when :directory
           @unix_perms ||= 0o755
           ::Zip::FILE_TYPE_DIR
         when :symlink
           @unix_perms ||= 0o755
           ::Zip::FILE_TYPE_SYMLINK
         end

    unless ft.nil?
      @external_file_attributes = ((ft << 12) | (@unix_perms & 0o7777)) << 16
    end
  end

  @extra.suppress_fields!(suppress_extra_fields) if suppress_extra_fields
  io << pack_c_dir_entry

  io << @name
  io << (@extra ? @extra.to_c_dir_bin : '')
  io << @comment
end

#write_local_entry(io, suppress_extra_fields: false, rewrite: false) ⇒ Object

:nodoc:



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# File 'lib/zip/entry.rb', line 435

def write_local_entry(io, suppress_extra_fields: false, rewrite: false) # :nodoc:
  prep_local_zip64_extra

  # If we are rewriting the local header, then we verify that we haven't changed
  # its size. At this point we have to keep extra fields if they are present.
  if rewrite
    verify_local_header_size!
  elsif suppress_extra_fields
    @extra.suppress_fields!(suppress_extra_fields)
  end

  @local_header_offset = io.tell

  io << pack_local_entry

  io << @name
  io << @extra.to_local_bin if @extra
  @local_header_size = io.tell - @local_header_offset
end

#write_to_zip_output_stream(zip_output_stream) ⇒ Object

:nodoc:



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# File 'lib/zip/entry.rb', line 730

def write_to_zip_output_stream(zip_output_stream) # :nodoc:
  if ftype == :directory
    zip_output_stream.put_next_entry(self)
  elsif @filepath
    zip_output_stream.put_next_entry(self)
    get_input_stream do |is|
      ::Zip::IOExtras.copy_stream(zip_output_stream, is)
    end
  else
    zip_output_stream.copy_raw_entry(self)
  end
end

#zip64? ⇒ Boolean

Does this entry use the ZIP64 extensions?

Returns:

  • (Boolean) 


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# File 'lib/zip/entry.rb', line 202

def zip64?
  !@extra[:zip64].nil?
end