Class: Lib::DHCP::Message

Inherits:
Packet
  • Object
show all
Defined in:
lib/lib/dhcp/messages/ack.rb,
lib/lib/dhcp/messages/nack.rb,
lib/lib/dhcp/messages/offer.rb,
lib/lib/dhcp/messages/inform.rb,
lib/lib/dhcp/messages/decline.rb,
lib/lib/dhcp/messages/message.rb,
lib/lib/dhcp/messages/release.rb,
lib/lib/dhcp/messages/request.rb,
lib/lib/dhcp/messages/discover.rb,
lib/lib/dhcp/messages/lease_query.rb,
lib/lib/dhcp/messages/lease_active.rb,
lib/lib/dhcp/messages/lease_unknown.rb,
lib/lib/dhcp/messages/lease_unassigned.rb

Defined Under Namespace

Classes: ACK, Decline, Discover, Inform, LeaseActive, LeaseQuery, LeaseUnassigned, LeaseUnknown, NACK, Offer, Release, Request

Constant Summary collapse

BOOTREQUEST = 
1
BOOTREPLY = 
2
DISCOVER = 
1
OFFER = 
2
REQUEST = 
3
DECLINE = 
4
ACKNOWLEDGE = 
5
NOT_ACKNOWLEDGE = 
6
RELEASE = 
7
INFORM = 
8
LEASE_QUERY = 
10
LEASE_UNASSIGNED = 
11
LEASE_UNKNOWN = 
12
LEASE_ACTIVE = 
13
NAME = 
{
    1   => 'DHCP Discover',
    2   => 'DHCP Offer',
    3   => 'DHCP Request',
    4   => 'DHCP Decline',
    5   => 'DHCP ACK',
    6   => 'DHCP NAK',
    7   => 'DHCP Release',
    8   => 'DHCP Inform',
    9   => '',
    10  => 'DHCP LeaseQuery',
    11  => 'DHCP LeaseUnassigned',
    12  => 'DHCP LeaseUnknown',
    13  => 'DHCP LeaseActive'
}

Constants inherited from Packet

Packet::MAGICK_COOKIE

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Packet

#option0, #option255, #options, #to_s

Class Method Details

.unpack(packet) ⇒ Object 



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
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
 
# File 'lib/lib/dhcp/messages/message.rb', line 52

def self.unpack(packet)
  packet =  super(packet)
  # noinspection RubyResolve
  res = case packet.option53.value.to_i
          when DISCOVER
            Lib::DHCP::Message::Discover.new(
                :htype    => packet.htype,
                :hlen     => packet.hlen,
                :hops     => packet.hops,
                :xid      => packet.xid,
                :secs     => packet.secs,
                :flags    => packet.flags,
                :ciaddr   => packet.ciaddr,
                :yiaddr   => packet.yiaddr,
                :siaddr   => packet.siaddr,
                :giaddr   => packet.giaddr,
                :chaddr   => packet.chaddr,
                :sname    => packet.sname,
                :file     => packet.file,
                :options  => packet.options
            )
          when OFFER
            Lib::DHCP::Message::Offer.new(
                :htype    => packet.htype,
                :hlen     => packet.hlen,
                :hops     => packet.hops,
                :xid      => packet.xid,
                :secs     => packet.secs,
                :flags    => packet.flags,
                :ciaddr   => packet.ciaddr,
                :yiaddr   => packet.yiaddr,
                :siaddr   => packet.siaddr,
                :giaddr   => packet.giaddr,
                :chaddr   => packet.chaddr,
                :sname    => packet.sname,
                :file     => packet.file,
                :options  => packet.options
            )
          when REQUEST
            Lib::DHCP::Message::Request.new(
                :htype    => packet.htype,
                :hlen     => packet.hlen,
                :hops     => packet.hops,
                :xid      => packet.xid,
                :secs     => packet.secs,
                :flags    => packet.flags,
                :ciaddr   => packet.ciaddr,
                :yiaddr   => packet.yiaddr,
                :siaddr   => packet.siaddr,
                :giaddr   => packet.giaddr,
                :chaddr   => packet.chaddr,
                :sname    => packet.sname,
                :file     => packet.file,
                :options  => packet.options
            )

          when DECLINE
            Lib::DHCP::Message::Decline.new(
                :htype    => packet.htype,
                :hlen     => packet.hlen,
                :hops     => packet.hops,
                :xid      => packet.xid,
                :secs     => packet.secs,
                :flags    => packet.flags,
                :ciaddr   => packet.ciaddr,
                :yiaddr   => packet.yiaddr,
                :siaddr   => packet.siaddr,
                :giaddr   => packet.giaddr,
                :chaddr   => packet.chaddr,
                :sname    => packet.sname,
                :file     => packet.file,
                :options  => packet.options
            )
          when ACKNOWLEDGE
            Lib::DHCP::Message::ACK.new(
                :htype    => packet.htype,
                :hlen     => packet.hlen,
                :hops     => packet.hops,
                :xid      => packet.xid,
                :secs     => packet.secs,
                :flags    => packet.flags,
                :ciaddr   => packet.ciaddr,
                :yiaddr   => packet.yiaddr,
                :siaddr   => packet.siaddr,
                :giaddr   => packet.giaddr,
                :chaddr   => packet.chaddr,
                :sname    => packet.sname,
                :file     => packet.file,
                :options  => packet.options
            )
          when NOT_ACKNOWLEDGE
            Lib::DHCP::Message::NACK.new(
                :htype    => packet.htype,
                :hlen     => packet.hlen,
                :hops     => packet.hops,
                :xid      => packet.xid,
                :secs     => packet.secs,
                :flags    => packet.flags,
                :ciaddr   => packet.ciaddr,
                :yiaddr   => packet.yiaddr,
                :siaddr   => packet.siaddr,
                :giaddr   => packet.giaddr,
                :chaddr   => packet.chaddr,
                :sname    => packet.sname,
                :file     => packet.file,
                :options  => packet.options
            )
          when RELEASE
            Lib::DHCP::Message::Release.new(
                :htype    => packet.htype,
                :hlen     => packet.hlen,
                :hops     => packet.hops,
                :xid      => packet.xid,
                :secs     => packet.secs,
                :flags    => packet.flags,
                :ciaddr   => packet.ciaddr,
                :yiaddr   => packet.yiaddr,
                :siaddr   => packet.siaddr,
                :giaddr   => packet.giaddr,
                :chaddr   => packet.chaddr,
                :sname    => packet.sname,
                :file     => packet.file,
                :options  => packet.options
            )
          when INFORM
            Lib::DHCP::Message::Inform.new(
                :htype    => packet.htype,
                :hlen     => packet.hlen,
                :hops     => packet.hops,
                :xid      => packet.xid,
                :secs     => packet.secs,
                :flags    => packet.flags,
                :ciaddr   => packet.ciaddr,
                :yiaddr   => packet.yiaddr,
                :siaddr   => packet.siaddr,
                :giaddr   => packet.giaddr,
                :chaddr   => packet.chaddr,
                :sname    => packet.sname,
                :file     => packet.file,
                :options  =>  packet.options
            )
          when LEASE_QUERY
            Lib::DHCP::Message::LeaseQuery.new(
                :htype    => packet.htype,
                :hlen     => packet.hlen,
                :hops     => packet.hops,
                :xid      => packet.xid,
                :secs     => packet.secs,
                :flags    => packet.flags,
                :ciaddr   => packet.ciaddr,
                :yiaddr   => packet.yiaddr,
                :siaddr   => packet.siaddr,
                :giaddr   => packet.giaddr,
                :chaddr   => packet.chaddr,
                :sname    => packet.sname,
                :file     => packet.file,
                :options  => packet.options
            )
          when LEASE_UNASSIGNED
            Lib::DHCP::Message::LeaseUnassigned.new(
                :htype    => packet.htype,
                :hlen     => packet.hlen,
                :hops     => packet.hops,
                :xid      => packet.xid,
                :secs     => packet.secs,
                :flags    => packet.flags,
                :ciaddr   => packet.ciaddr,
                :yiaddr   => packet.yiaddr,
                :siaddr   => packet.siaddr,
                :giaddr   => packet.giaddr,
                :chaddr   => packet.chaddr,
                :sname    => packet.sname,
                :file     => packet.file,
                :options  => packet.options
            )
          when LEASE_UNKNOWN
            Lib::DHCP::Message::LeaseUnknown.new(
                :htype    => packet.htype,
                :hlen     => packet.hlen,
                :hops     => packet.hops,
                :xid      => packet.xid,
                :secs     => packet.secs,
                :flags    => packet.flags,
                :ciaddr   => packet.ciaddr,
                :yiaddr   => packet.yiaddr,
                :siaddr   => packet.siaddr,
                :giaddr   => packet.giaddr,
                :chaddr   => packet.chaddr,
                :sname    => packet.sname,
                :file     => packet.file,
                :options  => packet.options
            )
          when LEASE_ACTIVE
            Lib::DHCP::Message::LeaseActive.new(
                :htype    => packet.htype,
                :hlen     => packet.hlen,
                :hops     => packet.hops,
                :xid      => packet.xid,
                :secs     => packet.secs,
                :flags    => packet.flags,
                :ciaddr   => packet.ciaddr,
                :yiaddr   => packet.yiaddr,
                :siaddr   => packet.siaddr,
                :giaddr   => packet.giaddr,
                :chaddr   => packet.chaddr,
                :sname    => packet.sname,
                :file     => packet.file,
                :options  => packet.options
            )
          else
            raise ArgumentError, "Unknown DHCP MESSAGE TYPE #{packet.option53.to_i}"
        end
  res.send(:sanity_check)
  res
end

Instance Method Details

#name ⇒ Object 



44
45
46
47
48
49
50
 
# File 'lib/lib/dhcp/messages/message.rb', line 44

def name
  if option53.nil?
    nil
  else
    NAME[option53.to_i]
  end
end

#pack ⇒ Object 



268
269
270
271
 
# File 'lib/lib/dhcp/messages/message.rb', line 268

def pack
  sanity_check
  super
end