A Discrete-Event Network Simulator
API
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ssid.cc
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1/*
2 * Copyright (c) 2006 INRIA
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation;
7 *
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
12 *
13 * You should have received a copy of the GNU General Public License
14 * along with this program; if not, write to the Free Software
15 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
16 *
17 * Author: Mathieu Lacage <mathieu.lacage@sophia.inria.fr>
18 */
19
20#include "ssid.h"
21
22namespace ns3
23{
24
26{
27 m_length = 0;
28 for (uint8_t i = 0; i < 33; i++)
29 {
30 m_ssid[i] = 0;
31 }
32}
33
34Ssid::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
54void
55Ssid::Print(std::ostream& os) const
56{
57 os << "ssid=" << PeekString();
58}
59
60bool
61Ssid::IsEqual(const Ssid& o) const
62{
63 uint8_t i = 0;
64 while (i < 32 && m_ssid[i] == o.m_ssid[i] && m_ssid[i] != 0)
65 {
66 i++;
67 }
68 return m_ssid[i] == o.m_ssid[i];
69}
70
71bool
73{
74 return m_ssid[0] == 0;
75}
76
77char*
79{
80 // It is safe to return a pointer to the buffer because it is
81 // guaranteed to be zero-terminated.
82 return (char*)m_ssid;
83}
84
87{
88 return IE_SSID;
89}
90
91uint16_t
93{
94 return m_length;
95}
96
97void
99{
100 NS_ASSERT(m_length <= 32);
101 start.Write(m_ssid, m_length);
102}
103
104uint16_t
106{
107 m_length = length;
108 NS_ASSERT(m_length <= 32);
109 start.Read(m_ssid, m_length);
110 return length;
111}
112
114
115std::istream&
116operator>>(std::istream& is, Ssid& ssid)
117{
118 std::string str;
119 is >> str;
120 ssid = Ssid(str);
121 return is;
122}
123
124} // namespace ns3
iterator in a Buffer instance
Definition: buffer.h:100
The IEEE 802.11 SSID Information Element.
Definition: ssid.h:36
uint16_t GetInformationFieldSize() const override
Length of serialized information (i.e., the length of the body of the IE, not including the Element I...
Definition: ssid.cc:92
bool IsEqual(const Ssid &o) const
Check if the two SSIDs are equal.
Definition: ssid.cc:61
uint8_t m_length
Length of the SSID.
Definition: ssid.h:83
WifiInformationElementId ElementId() const override
Get the wifi information element ID.
Definition: ssid.cc:86
char * PeekString() const
Peek the SSID.
Definition: ssid.cc:78
bool IsBroadcast() const
Check if the SSID is broadcast.
Definition: ssid.cc:72
void Print(std::ostream &os) const override
Generate human-readable form of IE.
Definition: ssid.cc:55
uint8_t m_ssid[33]
Raw SSID value.
Definition: ssid.h:82
uint16_t DeserializeInformationField(Buffer::Iterator start, uint16_t length) override
Deserialize information (i.e., the body of the IE, not including the Element ID and length octets)
Definition: ssid.cc:105
Ssid()
Create SSID with broadcast SSID.
Definition: ssid.cc:25
void SerializeInformationField(Buffer::Iterator start) const override
Serialize information (i.e., the body of the IE, not including the Element ID and length octets)
Definition: ssid.cc:98
#define NS_ASSERT(condition)
At runtime, in debugging builds, if this condition is not true, the program prints the source file,...
Definition: assert.h:66
#define ATTRIBUTE_HELPER_CPP(type)
Define the attribute value, accessor and checkers for class type
Every class exported by the ns3 library is enclosed in the ns3 namespace.
std::istream & operator>>(std::istream &is, Angles &a)
Definition: angles.cc:183
uint8_t WifiInformationElementId
This type is used to represent an Information Element ID.
#define IE_SSID
Here we have definition of all Information Element IDs in IEEE 802.11-2007.