source: source/ariba/Name.cpp@ 3056

Last change on this file since 3056 was 2481, checked in by Christoph Mayer, 16 years ago

-seeding der rand funktion

File size: 4.5 KB
Line 
1// [License]
2// The Ariba-Underlay Copyright
3//
4// Copyright (c) 2008-2009, Institute of Telematics, UniversitÀt Karlsruhe (TH)
5//
6// Institute of Telematics
7// UniversitÀt Karlsruhe (TH)
8// Zirkel 2, 76128 Karlsruhe
9// Germany
10//
11// Redistribution and use in source and binary forms, with or without
12// modification, are permitted provided that the following conditions are
13// met:
14//
15// 1. Redistributions of source code must retain the above copyright
16// notice, this list of conditions and the following disclaimer.
17// 2. Redistributions in binary form must reproduce the above copyright
18// notice, this list of conditions and the following disclaimer in the
19// documentation and/or other materials provided with the distribution.
20//
21// THIS SOFTWARE IS PROVIDED BY THE INSTITUTE OF TELEMATICS ``AS IS'' AND
22// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
24// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OF TELEMATICS OR
25// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
26// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
27// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
28// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
29// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
30// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
31// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32//
33// The views and conclusions contained in the software and documentation
34// are those of the authors and should not be interpreted as representing
35// official policies, either expressed or implied, of the Institute of
36// Telematics.
37// [License]
38
39#include "Name.h"
40
41std::ostream& operator<<( std::ostream& s, const ariba::Name& n ) {
42 return s << n.toString();
43}
44
45namespace ariba {
46
47const Name Name::UNSPECIFIED;
48
49void Name::init(const char* name, int len, bool copy, bool hreadable) {
50
51 // delete the old buffer
52 if( _bytes != NULL ) {
53 delete[] _bytes;
54 _bytes = NULL;
55 _length = 0;
56 }
57
58 // alloc new stuff
59 if (len == -1)
60 len = strlen(name);
61
62 if (copy) {
63
64 if ( (name!=NULL) && (len>0) ){
65 _bytes = new uint8_t[len];
66 memcpy( _bytes, name, len );
67 } else {
68 len = 0;
69 _bytes = NULL;
70 }
71
72 } else {
73 _bytes = (uint8_t*)name;
74 }
75
76 _copy = copy;
77 _length = len;
78 _hreadable = hreadable;
79}
80
81Name::Name()
82 : _bytes( NULL ), _length( 0 ), _copy( false ), _hreadable( false) {
83}
84
85Name::Name(const char* name, int len, bool copy)
86 : _bytes( NULL ), _length( 0 ), _copy( false ), _hreadable( false) {
87 init(name, len, copy, len == -1);
88}
89
90Name::Name(string name)
91 : _bytes( NULL ), _length( 0 ), _copy( false ), _hreadable( false) {
92 init(name.c_str(), name.length(), true, true);
93}
94
95Name::Name(const Name& name)
96 : _bytes( NULL ), _length( 0 ), _copy( false ), _hreadable( false) {
97 init((const char*)name.bytes(), name.length(), true, name._hreadable);
98}
99
100Name::~Name() {
101 if (_copy && (_bytes!=NULL)){
102 delete[] _bytes;
103 _bytes = NULL;
104 _length = 0;
105 }
106}
107
108Name& Name::operator=( const Name& name ) {
109 init((const char*)name.bytes(), name.length(), true, name._hreadable);
110}
111
112const uint8_t* Name::bytes() const {
113 return _bytes;
114}
115
116const size_t Name::length() const {
117 return _length;
118}
119
120bool Name::operator==(const Name& name) const {
121
122 // unspecified Name objects
123 if (_bytes == NULL && name._bytes == NULL &&
124 length() == name.length()) return true;
125
126 // specified name objects
127 if (_bytes == NULL || name._bytes == NULL) return false;
128 if (name.length() != length()) return false;
129 return (memcmp(name.bytes(), bytes(), length()) == 0);
130}
131
132bool Name::operator!=(const Name& name) const {
133 return !(*this == name);
134}
135
136bool Name::isUnspecified() const {
137 return *this == UNSPECIFIED;
138}
139
140Name Name::random() {
141 char name[17];
142 srand( time(NULL) );
143
144 for (int i=0;i<16; i++)
145 name[i] = ("abcdefghijklmnopqrstuvwxyz")[((unsigned)rand())%26];
146 name[16] = 0;
147
148 // force use of the std::string ctor with this
149 return Name( string(name) );
150}
151
152string Name::toString() const {
153 if (_hreadable) {
154 char str[256];
155 for (int i=0; i<length(); i++) str[i] = bytes()[i];
156 str[length()] = 0;
157 return string(str);
158 } else {
159 return string("<not readable>");
160 }
161}
162
163NodeID Name::toNodeId() const {
164 if( bytes()==NULL || length()==0 ) return NodeID::UNSPECIFIED;
165 return NodeID( Identifier::sha1(bytes(),length()) );
166}
167
168SpoVNetID Name::toSpoVNetId() const {
169 if( bytes()==NULL || length()==0 ) return SpoVNetID::UNSPECIFIED;
170 return SpoVNetID( Identifier::sha1(bytes(),length()) );
171}
172
173} // namespace ariba
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