1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
|
/* Copyright (C) 2002-2005 RealVNC Ltd. All Rights Reserved.
*
* This is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this software; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
* USA.
*/
#include <assert.h>
#include <stdlib.h>
#include <string.h>
#ifdef _WIN32
#define strcasecmp _stricmp
#endif
#include <rfb/CSecurityNone.h>
#include <rfb/CSecurityVeNCrypt.h>
#include <rfb/CSecurityVncAuth.h>
#include <rdr/Exception.h>
#include <rfb/LogWriter.h>
#include <rfb/Security.h>
#include <rfb/SSecurityNone.h>
#include <rfb/SSecurityVncAuth.h>
#include <rfb/SSecurityVeNCrypt.h>
#include <rfb/util.h>
using namespace rdr;
using namespace rfb;
using namespace std;
static LogWriter vlog("Security");
UserPasswdGetter *CSecurity::upg = NULL;
StringParameter Security::secTypes
("SecurityTypes",
"Specify which security scheme to use (None, VncAuth)",
"VncAuth");
Security::Security(void)
{
char *secTypesStr = secTypes.getData();
enabledSecTypes = parseSecTypes(secTypesStr);
delete secTypesStr;
}
void Security::EnableSecType(U8 secType)
{
list<U8>::iterator i;
for (i = enabledSecTypes.begin(); i != enabledSecTypes.end(); i++)
if (*i == secType)
return;
enabledSecTypes.push_back(secType);
}
bool Security::IsSupported(U8 secType)
{
list<U8>::iterator i;
for (i = enabledSecTypes.begin(); i != enabledSecTypes.end(); i++)
if (*i == secType)
return true;
return false;
}
SSecurity* Security::GetSSecurity(U8 secType)
{
if (!IsSupported(secType))
goto bail;
switch (secType) {
case secTypeNone: return new SSecurityNone();
case secTypeVncAuth: return new SSecurityVncAuth();
case secTypeVeNCrypt: return new SSecurityVeNCrypt();
}
bail:
throw Exception("Security type not supported");
}
CSecurity* Security::GetCSecurity(U8 secType)
{
assert (CSecurity::upg != NULL); /* (upg == NULL) means bug in the viewer */
if (!IsSupported(secType))
goto bail;
switch (secType) {
case secTypeNone: return new CSecurityNone();
case secTypeVncAuth: return new CSecurityVncAuth();
case secTypeVeNCrypt: return new CSecurityVeNCrypt();
}
bail:
throw Exception("Security type not supported");
}
rdr::U8 rfb::secTypeNum(const char* name)
{
if (strcasecmp(name, "None") == 0) return secTypeNone;
if (strcasecmp(name, "VncAuth") == 0) return secTypeVncAuth;
if (strcasecmp(name, "Tight") == 0) return secTypeTight;
if (strcasecmp(name, "RA2") == 0) return secTypeRA2;
if (strcasecmp(name, "RA2ne") == 0) return secTypeRA2ne;
if (strcasecmp(name, "SSPI") == 0) return secTypeSSPI;
if (strcasecmp(name, "SSPIne") == 0) return secTypeSSPIne;
if (strcasecmp(name, "VeNCrypt") == 0) return secTypeVeNCrypt;
return secTypeInvalid;
}
const char* rfb::secTypeName(rdr::U8 num)
{
switch (num) {
case secTypeNone: return "None";
case secTypeVncAuth: return "VncAuth";
case secTypeTight: return "Tight";
case secTypeRA2: return "RA2";
case secTypeRA2ne: return "RA2ne";
case secTypeSSPI: return "SSPI";
case secTypeSSPIne: return "SSPIne";
case secTypeVeNCrypt: return "VeNCrypt";
default: return "[unknown secType]";
}
}
std::list<rdr::U8> rfb::parseSecTypes(const char* types_)
{
std::list<rdr::U8> result;
CharArray types(strDup(types_)), type;
while (types.buf) {
strSplit(types.buf, ',', &type.buf, &types.buf);
rdr::U8 typeNum = secTypeNum(type.buf);
if (typeNum != secTypeInvalid)
result.push_back(typeNum);
}
return result;
}
|
