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
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
|
/**
* @file llhost.cpp
* @brief Encapsulates an IP address and a port.
*
* $LicenseInfo:firstyear=2000&license=viewerlgpl$
* Second Life Viewer Source Code
* Copyright (C) 2010, Linden Research, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License only.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
* $/LicenseInfo$
*/
#include "linden_common.h"
#include "llhost.h"
#include "llerror.h"
#if LL_WINDOWS
#include <llwin32headers.h>
#else
#include <netdb.h>
#include <netinet/in.h> // ntonl()
#include <sys/types.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#endif
LLHost::LLHost(const std::string& ip_and_port)
{
std::string::size_type colon_index = ip_and_port.find(":");
if (colon_index == std::string::npos)
{
mIP = ip_string_to_u32(ip_and_port.c_str());
mPort = 0;
}
else
{
std::string ip_str(ip_and_port, 0, colon_index);
std::string port_str(ip_and_port, colon_index+1);
mIP = ip_string_to_u32(ip_str.c_str());
mPort = atol(port_str.c_str());
}
}
std::string LLHost::getString() const
{
return llformat("%s:%u", u32_to_ip_string(mIP), mPort);
}
std::string LLHost::getIPandPort() const
{
return getString();
}
std::string LLHost::getIPString() const
{
return std::string( u32_to_ip_string( mIP ) );
}
std::string LLHost::getHostName() const
{
hostent* he;
if (INVALID_HOST_IP_ADDRESS == mIP)
{
LL_WARNS() << "LLHost::getHostName() : Invalid IP address" << LL_ENDL;
return std::string();
}
he = gethostbyaddr((char *)&mIP, sizeof(mIP), AF_INET);
if (!he)
{
#if LL_WINDOWS
LL_WARNS() << "LLHost::getHostName() : Couldn't find host name for address " << mIP << ", Error: "
<< WSAGetLastError() << LL_ENDL;
#else
LL_WARNS() << "LLHost::getHostName() : Couldn't find host name for address " << mIP << ", Error: "
<< h_errno << LL_ENDL;
#endif
return std::string();
}
else
{
return ll_safe_string(he->h_name);
}
}
bool LLHost::setHostByName(const std::string& hostname)
{
hostent *he;
std::string local_name(hostname);
#if LL_WINDOWS
// We may need an equivalent for Linux, but not sure - djs
LLStringUtil::toUpper(local_name);
#endif
he = gethostbyname(local_name.c_str());
if(!he)
{
U32 ip_address = ip_string_to_u32(hostname.c_str());
he = gethostbyaddr((char *)&ip_address, sizeof(ip_address), AF_INET);
}
if (he)
{
mIP = *(U32 *)he->h_addr_list[0];
return true;
}
else
{
setAddress(local_name);
// In windows, h_errno is a macro for WSAGetLastError(), so store value here
S32 error_number = h_errno;
switch(error_number)
{
case TRY_AGAIN: // XXX how to handle this case?
LL_WARNS() << "LLHost::setAddress(): try again" << LL_ENDL;
break;
case HOST_NOT_FOUND:
case NO_ADDRESS: // NO_DATA
LL_WARNS() << "LLHost::setAddress(): host not found" << LL_ENDL;
break;
case NO_RECOVERY:
LL_WARNS() << "LLHost::setAddress(): unrecoverable error" << LL_ENDL;
break;
default:
LL_WARNS() << "LLHost::setAddress(): unknown error - " << error_number << LL_ENDL;
break;
}
return false;
}
}
LLHost& LLHost::operator=(const LLHost &rhs)
{
if (this != &rhs)
{
set(rhs.getAddress(), rhs.getPort());
}
return *this;
}
std::ostream& operator<< (std::ostream& os, const LLHost &hh)
{
os << u32_to_ip_string(hh.mIP) << ":" << hh.mPort ;
return os;
}
//std::istream& operator>> (std::istream& is, LLHost &rh)
//{
// is >> rh.mIP;
// is >> rh.mPort;
// return is;
//}
|
