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ie-dot11s-id.cc
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1 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
2 /*
3  * Copyright (c) 2008,2009 IITP RAS
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: Kirill Andreev <andreev@iitp.ru>
19  */
20 
21 #include "ie-dot11s-id.h"
22 #include "ns3/assert.h"
23 
24 namespace ns3 {
25 namespace dot11s {
26 
27 IeMeshId::IeMeshId ()
28 {
29  for (uint8_t i = 0; i < 32; i++)
30  {
31  m_meshId[i] = 0;
32  }
33 }
34 IeMeshId::IeMeshId (std::string s)
35 {
36  NS_ASSERT (s.size () < 32);
37  const char *meshid = s.c_str ();
38  uint8_t len = 0;
39  while (*meshid != 0 && len < 32)
40  {
41  m_meshId[len] = *meshid;
42  meshid++;
43  len++;
44  }
45  NS_ASSERT (len <= 32);
46  while (len < 33)
47  {
48  m_meshId[len] = 0;
49  len++;
50  }
51 }
52 WifiInformationElementId
53 IeMeshId::ElementId () const
54 {
55  return IE11S_MESH_ID;
56 }
57 bool
58 IeMeshId::IsEqual (IeMeshId const &o) const
59 {
60  uint8_t i = 0;
61  while (i < 32 && m_meshId[i] == o.m_meshId[i] && m_meshId[i] != 0)
62  {
63  i++;
64  }
65  if (m_meshId[i] != o.m_meshId[i])
66  {
67  return false;
68  }
69  return true;
70 }
71 bool
72 IeMeshId::IsBroadcast (void) const
73 {
74  if (m_meshId[0] == 0)
75  {
76  return true;
77  }
78  return false;
79 }
80 char *
81 IeMeshId::PeekString (void) const
82 {
83  return (char *) m_meshId;
84 }
85 uint8_t
86 IeMeshId::GetInformationFieldSize (void) const
87 {
88  uint8_t size = 0;
89  while (m_meshId[size] != 0 && size < 32)
90  {
91  size++;
92  }
93  NS_ASSERT (size <= 32);
94  return size;
95 }
96 void
97 IeMeshId::SerializeInformationField (Buffer::Iterator i) const
98 {
99  uint8_t size = 0;
100  while (m_meshId[size] != 0 && size < 32)
101  {
102  i.WriteU8 (m_meshId[size]);
103  size++;
104  }
105 }
106 uint8_t
107 IeMeshId::DeserializeInformationField (Buffer::Iterator start, uint8_t length)
108 {
109  Buffer::Iterator i = start;
110  NS_ASSERT (length <= 32);
111  i.Read (m_meshId, length);
112  m_meshId[length] = 0;
113  return i.GetDistanceFrom (start);
114 }
115 void
116 IeMeshId::Print (std::ostream& os) const
117 {
118  os << std::endl << "<information_element id=" << ElementId () << ">" << std::endl;
119  os << "meshId = " << PeekString ();
120  os << "</information_element>" << std::endl;
121 }
122 bool
123 operator== (const IeMeshId & a, const IeMeshId & b)
124 {
125  bool result (true);
126  uint8_t size = 0;
127 
128  while (size < 32)
129  {
130  result = result && (a.m_meshId[size] == b.m_meshId[size]);
131  if (a.m_meshId[size] == 0)
132  {
133  return result;
134  }
135  size++;
136  }
137  return result;
138 }
139 std::ostream &
140 operator << (std::ostream &os, const IeMeshId &a)
141 {
142  a.Print (os);
143  return os;
144 }
145 
146 std::istream &operator >> (std::istream &is, IeMeshId &a)
147 {
148  std::string str;
149  is >> str;
150  a = IeMeshId (str.c_str ());
151  return is;
152 }
153 
154 ATTRIBUTE_HELPER_CPP (IeMeshId);
155 
156 
157 } // namespace dot11s
158 } // namespace ns3