Class: Binenc::Java::SBLFactory

Inherits:
Object
  • Object
show all
Includes:
DataConversion, SBLDSL
Defined in:
lib/binenc/factory/sbl_factory/sbl_factory.rb

Overview

simple binary layout factory

Instance Method Summary collapse

Methods included from DataConversion

#from_b64, #from_hex, included, #to_b64, #to_b64_mime, #to_bin, #to_hex, #to_java_bytes, #to_str

Methods included from SBLDSL

#bin, #date, #int, #oid, #seq, #str

Instance Method Details

#define(&block) ⇒ Object 



12
13
14
15
 
# File 'lib/binenc/factory/sbl_factory/sbl_factory.rb', line 12

def define(&block)
  instance_eval(&block) 
  self
end

#encoded ⇒ Object 



17
18
19
20
21
22
23
24
 
# File 'lib/binenc/factory/sbl_factory/sbl_factory.rb', line 17

def encoded
  res = []
  structure.each do |st|
    res << self.send("#{to_instance_method_name(st)}").encoded(false)
  end

  ASN1Sequence.new(res).encoded
end

#from_bin(bin) ⇒ Object 



26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
 
# File 'lib/binenc/factory/sbl_factory/sbl_factory.rb', line 26

def from_bin(bin)
 
  seq = ASN1Object.decode(bin).value

  if seq.length > structure.length
    logger.warn "Given binary has more field (#{seq.length}) than the defined specification (#{structure.length}). Different version of structure?"
  elsif structure.length > seq.length
    logger.warn "Defined specification has more field (#{structure.length}) than given binary (#{seq.length}). Different version of structure?"
  end

  structure.each_index do |i|
    name = structure[i]
    val = seq[i]
    create_instance_method(name, val)
  end

  self

end

#value_from_bin_struct(bin, *fieldNo) ⇒ Object 



46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
 
# File 'lib/binenc/factory/sbl_factory/sbl_factory.rb', line 46

def value_from_bin_struct(bin, *fieldNo)

  seq = ASN1Object.decode(bin).value

  ret = []
  fieldNo.each do |fn|
    raise BinencEngineException, "Given field no '#{fn}' to extract is larger than found fields (#{seq.length})" if fn > seq.length

    v = seq[fn]
    if v.is_a?(::Java::OrgBouncycastleAsn1::ASN1Object)
      case v
      when ::Java::OrgBouncycastleAsn1::DERBitString
        #vv = String.from_java_bytes(v.bytes)
        vv = to_java_bytes(v.bytes)
      when ::Java::OrgBouncycastleAsn1::DERUTF8String
        vv = v.to_s
      when ::Java::OrgBouncycastleAsn1::ASN1Integer
        vv = v.value
      #when ::Java::OrgBouncycastleAsn1::DERSequence, ::Java::OrgBouncycastleAsn1::DLSequence
      #  to_value(v.to_a)
      when ::Java::OrgBouncycastleAsn1::ASN1GeneralizedTime
        d = v.date
        vv = Time.at(d.time/1000)
      when ::Java::OrgBouncycastleAsn1::ASN1ObjectIdentifier
        vv = v.id
      else
        raise BinencEngineException, "Unhandled ASN1 object '#{obj.class}'"
      end

      #begin
      #  vv = ASN1Object.decode(v).value
      #rescue OpenSSL::ASN1::ASN1Error
      #  vv = v
      #end
    else
      vv = v
    end

    ret << vv

  end

  ret
end