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
|
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*
*/
#include "qpid/log/Statement.h"
#include "qpid/sys/SystemInfo.h"
#include "qpid/sys/posix/check.h"
#include <set>
#include <arpa/inet.h>
#include <sys/ioctl.h>
#include <sys/utsname.h>
#include <sys/types.h> // For FreeBSD
#include <sys/socket.h> // For FreeBSD
#include <netinet/in.h> // For FreeBSD
#include <ifaddrs.h>
#include <unistd.h>
#include <iostream>
#include <fstream>
#include <sstream>
#include <netdb.h>
#include <string.h>
#ifndef HOST_NAME_MAX
# define HOST_NAME_MAX 256
#endif
using namespace std;
namespace qpid {
namespace sys {
long SystemInfo::concurrency() {
#ifdef _SC_NPROCESSORS_ONLN // Linux specific.
return sysconf(_SC_NPROCESSORS_ONLN);
#else
return -1;
#endif
}
bool SystemInfo::getLocalHostname (Address &address) {
char name[HOST_NAME_MAX];
if (::gethostname(name, sizeof(name)) != 0)
return false;
address.host = name;
return true;
}
static const string LOOPBACK("127.0.0.1");
static const string TCP("tcp");
// Test IPv4 address for loopback
inline bool IN_IS_ADDR_LOOPBACK(const ::in_addr* a) {
return ((ntohl(a->s_addr) & 0xff000000) == 0x7f000000);
}
inline bool isLoopback(const ::sockaddr* addr) {
switch (addr->sa_family) {
case AF_INET: return IN_IS_ADDR_LOOPBACK(&((const ::sockaddr_in*)(const void*)addr)->sin_addr);
case AF_INET6: return IN6_IS_ADDR_LOOPBACK(&((const ::sockaddr_in6*)(const void*)addr)->sin6_addr);
default: return false;
}
}
void SystemInfo::getLocalIpAddresses (uint16_t port,
std::vector<Address> &addrList) {
::ifaddrs* ifaddr = 0;
QPID_POSIX_CHECK(::getifaddrs(&ifaddr));
for (::ifaddrs* ifap = ifaddr; ifap != 0; ifap = ifap->ifa_next) {
if (ifap->ifa_addr == 0) continue;
if (isLoopback(ifap->ifa_addr)) continue;
int family = ifap->ifa_addr->sa_family;
switch (family) {
case AF_INET6: {
// Ignore link local addresses as:
// * The scope id is illegal in URL syntax
// * Clients won't be able to use a link local address
// without adding their own (potentially different) scope id
sockaddr_in6* sa6 = (sockaddr_in6*)(ifap->ifa_addr);
if (IN6_IS_ADDR_LINKLOCAL(&sa6->sin6_addr)) break;
// Fallthrough
}
case AF_INET: {
char dispName[NI_MAXHOST];
int rc = ::getnameinfo(
ifap->ifa_addr,
(family == AF_INET)
? sizeof(struct sockaddr_in)
: sizeof(struct sockaddr_in6),
dispName, sizeof(dispName),
0, 0, NI_NUMERICHOST);
if (rc != 0) {
throw QPID_POSIX_ERROR(rc);
}
string addr(dispName);
addrList.push_back(Address(TCP, addr, port));
break;
}
default:
continue;
}
}
::freeifaddrs(ifaddr);
if (addrList.empty()) {
addrList.push_back(Address(TCP, LOOPBACK, port));
}
}
namespace {
struct AddrInfo {
struct addrinfo* ptr;
AddrInfo(const std::string& host) : ptr(0) {
::addrinfo hints;
::memset(&hints, 0, sizeof(hints));
hints.ai_family = AF_UNSPEC; // Allow both IPv4 and IPv6
if (::getaddrinfo(host.c_str(), NULL, &hints, &ptr) != 0)
ptr = 0;
}
~AddrInfo() { if (ptr) ::freeaddrinfo(ptr); }
};
}
bool SystemInfo::isLocalHost(const std::string& host) {
std::vector<Address> myAddrs;
getLocalIpAddresses(0, myAddrs);
std::set<string> localHosts;
for (std::vector<Address>::const_iterator i = myAddrs.begin(); i != myAddrs.end(); ++i)
localHosts.insert(i->host);
// Resolve host
AddrInfo ai(host);
if (!ai.ptr) return false;
for (struct addrinfo *res = ai.ptr; res != NULL; res = res->ai_next) {
if (isLoopback(res->ai_addr)) return true;
// Get string form of IP addr
char addr[NI_MAXHOST] = "";
int error = ::getnameinfo(res->ai_addr, res->ai_addrlen, addr, NI_MAXHOST, NULL, 0,
NI_NUMERICHOST | NI_NUMERICSERV);
if (error) return false;
if (localHosts.find(addr) != localHosts.end()) return true;
}
return false;
}
void SystemInfo::getSystemId (std::string &osName,
std::string &nodeName,
std::string &release,
std::string &version,
std::string &machine)
{
struct utsname _uname;
if (uname (&_uname) == 0)
{
osName = _uname.sysname;
nodeName = _uname.nodename;
release = _uname.release;
version = _uname.version;
machine = _uname.machine;
}
}
uint32_t SystemInfo::getProcessId()
{
return (uint32_t) ::getpid();
}
uint32_t SystemInfo::getParentProcessId()
{
return (uint32_t) ::getppid();
}
// Linux specific (Solaris has quite different stuff in /proc)
string SystemInfo::getProcessName()
{
string value;
ifstream input("/proc/self/status");
if (input.good()) {
while (!input.eof()) {
string key;
input >> key;
if (key == "Name:") {
input >> value;
break;
}
}
input.close();
}
return value;
}
}} // namespace qpid::sys
|
