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/*
* 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 "qpid/sys/posix/PrivatePosix.h"
#include <procinfo.h>
#include <arpa/inet.h>
#include <net/if.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <sys/utsname.h>
#include <unistd.h>
#include <map>
#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() {
return sysconf(_SC_NPROCESSORS_ONLN);
}
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;
}
}
namespace {
class HandleCloser : public IOHandle {
public:
HandleCloser(int fd) : IOHandle(fd) {}
~HandleCloser() { ::close(fd); fd = -1; }
};
inline bool isInetOrInet6(::sockaddr* sa) {
switch (sa->sa_family) {
case AF_INET:
case AF_INET6:
return true;
default:
return false;
}
}
inline void *InetAddr(::sockaddr* sa) {
switch (sa->sa_family) {
case AF_INET:
return &(reinterpret_cast<struct sockaddr_in *>(sa)->sin_addr);
case AF_INET6:
return &(reinterpret_cast<struct sockaddr_in6 *>(sa)->sin6_addr);
default:
return 0;
}
}
typedef std::map<std::string, std::vector<std::string> > InterfaceInfo;
std::map<std::string, std::vector<std::string> > cachedInterfaces;
void cacheInterfaceInfo() {
int status = 0;
int handle = ::socket (PF_INET, SOCK_DGRAM, 0);
QPID_POSIX_CHECK(handle);
HandleCloser h(handle);
size_t num_ifs = 0;
struct ifconf ifc;
status = ::ioctl(handle, SIOCGSIZIFCONF, (caddr_t)&ifc.ifc_len);
QPID_POSIX_CHECK(status);
std::auto_ptr<char> auto_ifc_buf(new char[ifc.ifc_len]);
memset (auto_ifc_buf.get(), 0, ifc.ifc_len);
status = ::ioctl(handle, SIOCGIFCONF, (caddr_t)auto_ifc_buf.get());
QPID_POSIX_CHECK(status);
char *buf_start = auto_ifc_buf.get();
char *buf_end = buf_start + ifc.ifc_len;
for (char *ptr = buf_start; ptr < buf_end; ) {
struct ifreq *req = reinterpret_cast<struct ifreq *>(ptr);
ptr += IFNAMSIZ;
ptr += req->ifr_addr.sa_len;
if (!strcmp("lo0", req->ifr_name) || !isInetOrInet6(&req->ifr_addr))
continue;
char dots[INET6_ADDRSTRLEN];
if (! ::inet_ntop(req->ifr_addr.sa_family, InetAddr(&req->ifr_addr), dots, sizeof(dots)))
throw QPID_POSIX_ERROR(errno);
std::string address(dots);
cachedInterfaces[req->ifr_name].push_back(address);
}
}
}
bool SystemInfo::getInterfaceAddresses(const std::string& interface, std::vector<std::string>& addresses) {
if ( cachedInterfaces.empty() ) cacheInterfaceInfo();
InterfaceInfo::iterator i = cachedInterfaces.find(interface);
if ( i==cachedInterfaces.end() ) return false;
std::copy(i->second.begin(), i->second.end(), std::back_inserter(addresses));
return true;
}
void SystemInfo::getInterfaceNames(std::vector<std::string>& names ) {
if ( cachedInterfaces.empty() ) cacheInterfaceInfo();
for (InterfaceInfo::const_iterator i = cachedInterfaces.begin(); i!=cachedInterfaces.end(); ++i) {
names.push_back(i->first);
}
}
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();
}
// AIX specific
string SystemInfo::getProcessName()
{
struct procsinfo my_info;
pid_t my_pid = getpid();
int status = getprocs(&my_info, sizeof(my_info), 0, 0, &my_pid, 1);
QPID_POSIX_CHECK(status);
std::string my_name(my_info.pi_comm);
return my_name;
}
// Always true. Only Windows has exception cases.
bool SystemInfo::threadSafeShutdown()
{
return true;
}
}} // namespace qpid::sys
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