diff options
Diffstat (limited to 'qpid/cpp/src/qpid/sys/posix/SystemInfo.cpp')
| -rwxr-xr-x | qpid/cpp/src/qpid/sys/posix/SystemInfo.cpp | 201 |
1 files changed, 201 insertions, 0 deletions
diff --git a/qpid/cpp/src/qpid/sys/posix/SystemInfo.cpp b/qpid/cpp/src/qpid/sys/posix/SystemInfo.cpp new file mode 100755 index 0000000000..2a42a5b2a7 --- /dev/null +++ b/qpid/cpp/src/qpid/sys/posix/SystemInfo.cpp @@ -0,0 +1,201 @@ +/* + * 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 <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 <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() { +#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; + } +} + +namespace { + inline socklen_t sa_len(::sockaddr* sa) + { + switch (sa->sa_family) { + case AF_INET: + return sizeof(struct sockaddr_in); + case AF_INET6: + return sizeof(struct sockaddr_in6); + default: + return sizeof(struct sockaddr_storage); + } + } + + inline bool isInetOrInet6(::sockaddr* sa) { + switch (sa->sa_family) { + case AF_INET: + case AF_INET6: + return true; + default: + return false; + } + } + typedef std::map<std::string, std::vector<std::string> > InterfaceInfo; + std::map<std::string, std::vector<std::string> > cachedInterfaces; + + void cacheInterfaceInfo() { + // Get interface info + ::ifaddrs* interfaceInfo; + QPID_POSIX_CHECK( ::getifaddrs(&interfaceInfo) ); + + char name[NI_MAXHOST]; + for (::ifaddrs* info = interfaceInfo; info != 0; info = info->ifa_next) { + + // Only use IPv4/IPv6 interfaces + if (!info->ifa_addr || !isInetOrInet6(info->ifa_addr)) continue; + + int rc=::getnameinfo(info->ifa_addr, sa_len(info->ifa_addr), + name, sizeof(name), 0, 0, + NI_NUMERICHOST); + if (rc >= 0) { + std::string address(name); + cachedInterfaces[info->ifa_name].push_back(address); + } else { + throw qpid::Exception(QPID_MSG(gai_strerror(rc))); + } + } + ::freeifaddrs(interfaceInfo); + } +} + +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(); +} + +// 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; +} + +// Always true. Only Windows has exception cases. +bool SystemInfo::threadSafeShutdown() +{ + return true; +} + + +}} // namespace qpid::sys |