A Discrete-Event Network Simulator
API
ssid.cc
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1 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
2 /*
3  * Copyright (c) 2006 INRIA
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: Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
19  */
20 
21 #include "ssid.h"
22 
23 namespace ns3 {
24 
26 {
27  m_length = 0;
28  for (uint8_t i = 0; i < 33; i++)
29  {
30  m_ssid[i] = 0;
31  }
32 }
33 
34 Ssid::Ssid (std::string s)
35 {
36  NS_ASSERT (s.size () < 32);
37  const char *ssid = s.c_str ();
38  uint8_t len = 0;
39  while (*ssid != 0 && len < 32)
40  {
41  m_ssid[len] = *ssid;
42  ssid++;
43  len++;
44  }
45  NS_ASSERT (len <= 32);
46  m_length = len;
47  while (len < 33)
48  {
49  m_ssid[len] = 0;
50  len++;
51  }
52 }
53 
54 bool
55 Ssid::IsEqual (const Ssid& o) const
56 {
57  uint8_t i = 0;
58  while (i < 32
59  && m_ssid[i] == o.m_ssid[i]
60  && m_ssid[i] != 0)
61  {
62  i++;
63  }
64  if (m_ssid[i] != o.m_ssid[i])
65  {
66  return false;
67  }
68  return true;
69 }
70 
71 bool
72 Ssid::IsBroadcast (void) const
73 {
74  if (m_ssid[0] == 0)
75  {
76  return true;
77  }
78  return false;
79 }
80 
81 char *
82 Ssid::PeekString (void) const
83 {
84  //It is safe to return a pointer to the buffer because it is
85  //guaranteed to be zero-terminated.
86  return (char *)m_ssid;
87 }
88 
91 {
92  return IE_SSID;
93 }
94 
95 uint8_t
97 {
98  return m_length;
99 }
100 
101 void
103 {
104  NS_ASSERT (m_length <= 32);
105  start.Write (m_ssid, m_length);
106 }
107 
108 uint8_t
110  uint8_t length)
111 {
112  m_length = length;
113  NS_ASSERT (m_length <= 32);
114  start.Read (m_ssid, m_length);
115  return length;
116 }
117 
119 
128 std::ostream &
129 operator << (std::ostream &os, const Ssid &ssid)
130 {
131  os << ssid.PeekString ();
132  return os;
133 }
134 
143 std::istream &operator >> (std::istream &is, Ssid &ssid)
144 {
145  std::string str;
146  is >> str;
147  ssid = Ssid (str.c_str ());
148  return is;
149 }
150 
151 } //namespace ns3
WifiInformationElementId ElementId() const
Get the ElementID.
Definition: ssid.cc:90
std::istream & operator>>(std::istream &is, Angles &a)
initialize a struct Angles from input
Definition: angles.cc:48
uint8_t m_ssid[33]
Raw SSID value.
Definition: ssid.h:103
#define ATTRIBUTE_HELPER_CPP(type)
Define the attribute value, accessor and checkers for class type.
def start()
Definition: core.py:1855
void SerializeInformationField(Buffer::Iterator start) const
Get the information field size.
Definition: ssid.cc:102
#define NS_ASSERT(condition)
At runtime, in debugging builds, if this condition is not true, the program prints the source file...
Definition: assert.h:67
Ssid()
Definition: ssid.cc:25
iterator in a Buffer instance
Definition: buffer.h:98
ssid
Definition: third.py:100
std::ostream & operator<<(std::ostream &os, const Angles &a)
print a struct Angles to output
Definition: angles.cc:42
Every class exported by the ns3 library is enclosed in the ns3 namespace.
char * PeekString(void) const
Peek the SSID.
Definition: ssid.cc:82
uint8_t GetInformationFieldSize() const
Get the information field size.
Definition: ssid.cc:96
The IEEE 802.11 SSID Information Element.
Definition: ssid.h:35
#define IE_SSID
Here we have definition of all Information Element IDs in IEEE 802.11-2007.
bool IsEqual(const Ssid &o) const
Check if the two SSIDs are equal.
Definition: ssid.cc:55
uint8_t WifiInformationElementId
This type is used to represent an Information Element ID.
uint8_t m_length
Length of the SSID.
Definition: ssid.h:104
bool IsBroadcast(void) const
Check if the SSID is broadcast.
Definition: ssid.cc:72
uint8_t DeserializeInformationField(Buffer::Iterator start, uint8_t length)
Get the information field size.
Definition: ssid.cc:109