A Discrete-Event Network Simulator
API
rip-header.cc
Go to the documentation of this file.
1/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
2/*
3 * Copyright (c) 2016 Universita' di Firenze, Italy
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation;
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17 *
18 * Author: Tommaso Pecorella <tommaso.pecorella@unifi.it>
19 */
20
21#include "rip-header.h"
22#include "ns3/log.h"
23
24namespace ns3 {
25
26/*
27 * RipRte
28 */
30
31
33 : m_tag (0), m_prefix ("127.0.0.1"), m_subnetMask ("0.0.0.0"), m_nextHop ("0.0.0.0"), m_metric (16)
34{
35}
36
38{
39 static TypeId tid = TypeId ("ns3::RipRte")
40 .SetParent<Header> ()
41 .SetGroupName ("Internet")
42 .AddConstructor<RipRte> ();
43 return tid;
44}
45
47{
48 return GetTypeId ();
49}
50
51void RipRte::Print (std::ostream & os) const
52{
53 os << "prefix " << m_prefix << "/" << m_subnetMask.GetPrefixLength () << " Metric " << int(m_metric);
54 os << " Tag " << int(m_tag) << " Next Hop " << m_nextHop;
55}
56
58{
59 return 20;
60}
61
63{
64 i.WriteHtonU16 (2);
66
71}
72
74{
75 uint16_t tmp;
76
77 tmp = i.ReadNtohU16 ();
78 if (tmp != 2)
79 {
80 return 0;
81 }
82
83 m_tag = i.ReadNtohU16 ();
87
88 m_metric = i.ReadNtohU32 ();
89
90 return GetSerializedSize ();
91}
92
94{
95 m_prefix = prefix;
96}
97
99{
100 return m_prefix;
101}
102
104{
105 m_subnetMask = subnetMask;
106}
107
109{
110 return m_subnetMask;
111}
112
113void RipRte::SetRouteTag (uint16_t routeTag)
114{
115 m_tag = routeTag;
116}
117
118uint16_t RipRte::GetRouteTag () const
119{
120 return m_tag;
121}
122
124{
125 m_metric = routeMetric;
126}
127
129{
130 return m_metric;
131}
132
134{
135 m_nextHop = nextHop;
136}
137
139{
140 return m_nextHop;
141}
142
143
144std::ostream & operator << (std::ostream & os, const RipRte & h)
145{
146 h.Print (os);
147 return os;
148}
149
150/*
151 * RipHeader
152 */
153NS_LOG_COMPONENT_DEFINE ("RipHeader");
155
156
158 : m_command (0)
159{
160}
161
163{
164 static TypeId tid = TypeId ("ns3::RipHeader")
165 .SetParent<Header> ()
166 .SetGroupName ("Internet")
167 .AddConstructor<RipHeader> ();
168 return tid;
169}
170
172{
173 return GetTypeId ();
174}
175
176void RipHeader::Print (std::ostream & os) const
177{
178 os << "command " << int(m_command);
179 for (std::list<RipRte>::const_iterator iter = m_rteList.begin ();
180 iter != m_rteList.end (); iter ++)
181 {
182 os << " | ";
183 iter->Print (os);
184 }
185}
186
188{
189 RipRte rte;
190 return 4 + m_rteList.size () * rte.GetSerializedSize ();
191}
192
194{
196
197 i.WriteU8 (uint8_t (m_command));
198 i.WriteU8 (2);
199 i.WriteU16 (0);
200
201 for (std::list<RipRte>::const_iterator iter = m_rteList.begin ();
202 iter != m_rteList.end (); iter ++)
203 {
204 iter->Serialize (i);
205 i.Next(iter->GetSerializedSize ());
206 }
207}
208
210{
212
213 uint8_t temp;
214 temp = i.ReadU8 ();
215 if ((temp == REQUEST) || (temp == RESPONSE))
216 {
217 m_command = temp;
218 }
219 else
220 {
221 return 0;
222 }
223
224 if (i.ReadU8 () != 2)
225 {
226 NS_LOG_LOGIC ("RIP received a message with mismatch version, ignoring.");
227 return 0;
228 }
229
230 if (i.ReadU16 () != 0)
231 {
232 NS_LOG_LOGIC ("RIP received a message with invalid filled flags, ignoring.");
233 return 0;
234 }
235
236 uint8_t rteNumber = i.GetRemainingSize ()/20;
237 for (uint8_t n=0; n<rteNumber; n++)
238 {
239 RipRte rte;
240 i.Next (rte.Deserialize (i));
241 m_rteList.push_back (rte);
242 }
243
244 return GetSerializedSize ();
245}
246
248{
249 m_command = command;
250}
251
253{
255}
256
258{
259 m_rteList.push_back (rte);
260}
261
263{
264 m_rteList.clear ();
265}
266
267uint16_t RipHeader::GetRteNumber (void) const
268{
269 return m_rteList.size ();
270}
271
272std::list<RipRte> RipHeader::GetRteList (void) const
273{
274 return m_rteList;
275}
276
277
278std::ostream & operator << (std::ostream & os, const RipHeader & h)
279{
280 h.Print (os);
281 return os;
282}
283
284
285}
286
iterator in a Buffer instance
Definition: buffer.h:99
uint16_t ReadNtohU16(void)
Definition: buffer.h:946
void WriteU8(uint8_t data)
Definition: buffer.h:869
uint32_t GetRemainingSize(void) const
Definition: buffer.cc:1166
void Next(void)
go forward by one byte
Definition: buffer.h:845
void WriteU16(uint16_t data)
Definition: buffer.cc:871
uint16_t ReadU16(void)
Definition: buffer.h:1029
uint8_t ReadU8(void)
Definition: buffer.h:1021
void WriteHtonU16(uint16_t data)
Definition: buffer.h:905
void WriteHtonU32(uint32_t data)
Definition: buffer.h:924
uint32_t ReadNtohU32(void)
Definition: buffer.h:970
Protocol header serialization and deserialization.
Definition: header.h:43
Ipv4 addresses are stored in host order in this class.
Definition: ipv4-address.h:41
uint32_t Get(void) const
Get the host-order 32-bit IP address.
void Set(uint32_t address)
input address is in host order.
a class to represent an Ipv4 address mask
Definition: ipv4-address.h:256
void Set(uint32_t mask)
input mask is in host order.
uint16_t GetPrefixLength(void) const
uint32_t Get(void) const
Get the host-order 32-bit IP mask.
RipHeader - see RFC 2453
Definition: rip-header.h:158
virtual void Print(std::ostream &os) const
Definition: rip-header.cc:176
std::list< RipRte > GetRteList(void) const
Get the list of the RTEs included in the message.
Definition: rip-header.cc:272
virtual TypeId GetInstanceTypeId(void) const
Return the instance type identifier.
Definition: rip-header.cc:171
void AddRte(RipRte rte)
Add a RTE to the message.
Definition: rip-header.cc:257
virtual uint32_t GetSerializedSize(void) const
Get the serialized size of the packet.
Definition: rip-header.cc:187
std::list< RipRte > m_rteList
list of the RTEs in the message
Definition: rip-header.h:241
void SetCommand(Command_e command)
Set the command.
Definition: rip-header.cc:247
Command_e
Commands to be used in Rip headers.
Definition: rip-header.h:199
virtual uint32_t Deserialize(Buffer::Iterator start)
Deserialize the packet.
Definition: rip-header.cc:209
uint8_t m_command
command type
Definition: rip-header.h:240
static TypeId GetTypeId(void)
Get the type ID.
Definition: rip-header.cc:162
void ClearRtes()
Clear all the RTEs from the header.
Definition: rip-header.cc:262
uint16_t GetRteNumber(void) const
Get the number of RTE included in the message.
Definition: rip-header.cc:267
virtual void Serialize(Buffer::Iterator start) const
Serialize the packet.
Definition: rip-header.cc:193
Command_e GetCommand(void) const
Get the command.
Definition: rip-header.cc:252
Rip v2 Routing Table Entry (RTE) - see RFC 2453.
Definition: rip-header.h:38
void SetSubnetMask(Ipv4Mask subnetMask)
Set the subnet mask.
Definition: rip-header.cc:103
Ipv4Address GetNextHop(void) const
Get the next hop.
Definition: rip-header.cc:138
Ipv4Address m_prefix
Advertised prefix.
Definition: rip-header.h:138
uint32_t m_metric
Route metric.
Definition: rip-header.h:141
Ipv4Mask m_subnetMask
Subnet mask.
Definition: rip-header.h:139
void SetRouteMetric(uint32_t routeMetric)
Set the route metric.
Definition: rip-header.cc:123
Ipv4Address GetPrefix(void) const
Get the prefix.
Definition: rip-header.cc:98
uint16_t m_tag
Route tag.
Definition: rip-header.h:137
void SetPrefix(Ipv4Address prefix)
Set the prefix.
Definition: rip-header.cc:93
uint16_t GetRouteTag(void) const
Get the route tag.
Definition: rip-header.cc:118
Ipv4Mask GetSubnetMask(void) const
Get the subnet mask.
Definition: rip-header.cc:108
virtual TypeId GetInstanceTypeId(void) const
Return the instance type identifier.
Definition: rip-header.cc:46
RipRte(void)
Definition: rip-header.cc:32
virtual void Serialize(Buffer::Iterator start) const
Serialize the packet.
Definition: rip-header.cc:62
uint32_t GetRouteMetric(void) const
Get the route metric.
Definition: rip-header.cc:128
virtual uint32_t GetSerializedSize(void) const
Get the serialized size of the packet.
Definition: rip-header.cc:57
virtual uint32_t Deserialize(Buffer::Iterator start)
Deserialize the packet.
Definition: rip-header.cc:73
Ipv4Address m_nextHop
Next hop.
Definition: rip-header.h:140
void SetRouteTag(uint16_t routeTag)
Set the route tag.
Definition: rip-header.cc:113
static TypeId GetTypeId(void)
Get the type ID.
Definition: rip-header.cc:37
void SetNextHop(Ipv4Address nextHop)
Set the next hop.
Definition: rip-header.cc:133
virtual void Print(std::ostream &os) const
Definition: rip-header.cc:51
a unique identifier for an interface.
Definition: type-id.h:59
TypeId SetParent(TypeId tid)
Set the parent TypeId.
Definition: type-id.cc:922
#define NS_LOG_COMPONENT_DEFINE(name)
Define a Log component with a specific name.
Definition: log.h:206
#define NS_LOG_LOGIC(msg)
Use NS_LOG to output a message of level LOG_LOGIC.
Definition: log.h:290
#define NS_OBJECT_ENSURE_REGISTERED(type)
Register an Object subclass with the TypeId system.
Definition: object-base.h:45
Every class exported by the ns3 library is enclosed in the ns3 namespace.
std::ostream & operator<<(std::ostream &os, const Angles &a)
Definition: angles.cc:139
def start()
Definition: core.py:1852