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
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
|
/**
* @file llhost.cpp
* @brief Encapsulates an IP address and a port.
*
* Copyright (c) 2000-$CurrentYear$, Linden Research, Inc.
* $License$
*/
#include "linden_common.h"
#include "llhost.h"
#include "llerror.h"
#if LL_WINDOWS
#define WIN32_LEAN_AND_MEAN
#include <winsock2.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::invalid(INVALID_PORT,INVALID_HOST_IP_ADDRESS);
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());
}
}
void LLHost::getString(char* buffer, S32 length) const
{
if (((U32) length) < MAXADDRSTR + 1 + 5)
{
llerrs << "LLHost::getString - string too short" << llendl;
return;
}
snprintf(buffer, length, "%s:%u", u32_to_ip_string(mIP), mPort); /* Flawfinder: ignore */
}
void LLHost::getIPString(char* buffer, S32 length) const
{
if ( ((U32) length) < MAXADDRSTR)
{
llerrs << "LLHost::getIPString - string too short" << llendl;
return;
}
snprintf(buffer, length, "%s", u32_to_ip_string(mIP)); /* Flawfinder: ignore */
}
std::string LLHost::getIPandPort() const
{
char buffer[MAXADDRSTR + 1 + 5]; /*Flawfinder: ignore*/
getString(buffer, sizeof(buffer));
return buffer;
}
std::string LLHost::getIPString() const
{
return std::string( u32_to_ip_string( mIP ) );
}
void LLHost::getHostName(char *buf, S32 len) const
{
hostent *he;
if (INVALID_HOST_IP_ADDRESS == mIP)
{
llwarns << "LLHost::getHostName() : Invalid IP address" << llendl;
buf[0] = '\0';
return;
}
he = gethostbyaddr((char *)&mIP, sizeof(mIP), AF_INET);
if (!he)
{
#if LL_WINDOWS
llwarns << "LLHost::getHostName() : Couldn't find host name for address " << mIP << ", Error: "
<< WSAGetLastError() << llendl;
#else
llwarns << "LLHost::getHostName() : Couldn't find host name for address " << mIP << ", Error: "
<< h_errno << llendl;
#endif
buf[0] = '\0';
}
else
{
strncpy(buf, he->h_name, len); /*Flawfinder: ignore*/
buf[len-1] = '\0';
}
}
LLString LLHost::getHostName() const
{
hostent *he;
if (INVALID_HOST_IP_ADDRESS == mIP)
{
llwarns << "LLHost::getHostName() : Invalid IP address" << llendl;
return "";
}
he = gethostbyaddr((char *)&mIP, sizeof(mIP), AF_INET);
if (!he)
{
#if LL_WINDOWS
llwarns << "LLHost::getHostName() : Couldn't find host name for address " << mIP << ", Error: "
<< WSAGetLastError() << llendl;
#else
llwarns << "LLHost::getHostName() : Couldn't find host name for address " << mIP << ", Error: "
<< h_errno << llendl;
#endif
return "";
}
else
{
LLString hostname = he->h_name;
return hostname;
}
}
BOOL LLHost::setHostByName(const char *string)
{
hostent *he;
char local_name[MAX_STRING]; /*Flawfinder: ignore*/
if (strlen(string)+1 > MAX_STRING) /*Flawfinder: ignore*/
{
llerrs << "LLHost::setHostByName() : Address string is too long: "
<< string << llendl;
}
strncpy(local_name, string,MAX_STRING); /*Flawfinder: ignore*/
local_name[MAX_STRING-1] = '\0';
#if LL_WINDOWS
// We may need an equivalent for Linux, but not sure - djs
_strupr(local_name);
#endif
he = gethostbyname(local_name);
if(!he)
{
U32 ip_address = inet_addr(string);
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?
llwarns << "LLHost::setAddress(): try again" << llendl;
break;
case HOST_NOT_FOUND:
case NO_ADDRESS: // NO_DATA
llwarns << "LLHost::setAddress(): host not found" << llendl;
break;
case NO_RECOVERY:
llwarns << "LLHost::setAddress(): unrecoverable error" << llendl;
break;
default:
llwarns << "LLHost::setAddress(): unknown error - " << error_number << llendl;
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;
}
|
