Class: Mapi::Pst::RawPropertyStore

Inherits:

BlockParser

• Object
• BlockParser
• Mapi::Pst::RawPropertyStore

Includes:

Enumerable

Defined in:

lib/mapi/pst.rb

Overview

RawPropertyStore is used to iterate through the properties of an item, or the auxiliary data for an attachment. its just a parser for the way the properties are serialized, when the properties don’t have to conform to a column structure.

structure of this chunk of data is often

header, property keys, data values, and then indexes.

the property keys has value in it. value can be the actual value if its a short type, otherwise you lookup the value in the indicies, where you get the offsets to use in the main data body. due to the indirect thing though, any of these parts could actually come from a separate stream.

Constant Summary

Constants inherited from BlockParser

BlockParser::ID2_ATTACHMENTS, BlockParser::ID2_RECIPIENTS, BlockParser::IMMEDIATE_TYPES, BlockParser::INDIRECT_TYPES, BlockParser::PR_BODY_HTML, BlockParser::PR_SUBJECT, BlockParser::TYPES

Instance Attribute Summary

• #length ⇒ Object readonly

  Returns the value of attribute length.

Attributes inherited from BlockParser

#data, #data_chunks, #desc, #offset_tables

Instance Method Summary

• #each ⇒ Object

  iterate through the property tuples.

• #initialize(desc) ⇒ RawPropertyStore constructor

  A new instance of RawPropertyStore.

Methods inherited from BlockParser

#get_data_indirect, #get_data_indirect_io, #handle_indirect_values, #idx2, #load_header

Constructor Details

#initialize(desc) ⇒ RawPropertyStore

Returns a new instance of RawPropertyStore.

Raises:

• (FormatError)

# File 'lib/mapi/pst.rb', line 1277

def initialize desc
	super
	raise FormatError, "expected type 1 - got #{@type}" unless @type == 1

	# the way that offset works, data1 may be a subset of buf, or something from id2. if its from buf,
	# it will be offset based on index_offset and offset. so it could be some random chunk of data anywhere
	# in the thing.
	header_data = get_data_indirect @offset1
	raise FormatError if header_data.length < 8
	signature, offset2 = header_data.unpack 'V2'
	#p [@type, signature]
	raise FormatError, 'unhandled block signature 0x%08x' % @type if signature != 0x000602b5
	# this is actually a big chunk of tag tuples.
	@index_data = get_data_indirect offset2
	@length = @index_data.length / 8
end

Instance Attribute Details

#length ⇒ Object (readonly)

Returns the value of attribute length.

# File 'lib/mapi/pst.rb', line 1276

def length
  @length
end

Instance Method Details

#each ⇒ Object

iterate through the property tuples

# File 'lib/mapi/pst.rb', line 1295

def each
	length.times do |i|
		key, type, value = handle_indirect_values(*@index_data[8 * i, 8].unpack('vvV'))
		yield key, type, value
	end
end