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https://github.com/Telecominfraproject/wlan-cloud-lib-poco.git
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This commit is contained in:
Guenter Obiltschnig
368
Foundation/src/UUIDGenerator.cpp
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368
Foundation/src/UUIDGenerator.cpp
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//
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// UUIDGenerator.cpp
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//
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// $Id: //poco/1.1.0/Foundation/src/UUIDGenerator.cpp#2 $
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//
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// Library: Foundation
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// Package: UUID
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// Module: UUID
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//
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// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
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// and Contributors.
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//
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// Permission is hereby granted, free of charge, to any person or organization
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// obtaining a copy of the software and accompanying documentation covered by
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// this license (the "Software") to use, reproduce, display, distribute,
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// execute, and transmit the Software, and to prepare derivative works of the
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// Software, and to permit third-parties to whom the Software is furnished to
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// do so, all subject to the following:
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//
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// The copyright notices in the Software and this entire statement, including
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// the above license grant, this restriction and the following disclaimer,
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// must be included in all copies of the Software, in whole or in part, and
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// all derivative works of the Software, unless such copies or derivative
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// works are solely in the form of machine-executable object code generated by
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// a source language processor.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
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// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
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// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
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// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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//
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#include "Foundation/UUIDGenerator.h"
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#include "Foundation/Thread.h"
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#include "Foundation/RandomStream.h"
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#include "Foundation/DigestEngine.h"
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#include "Foundation/MD5Engine.h"
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#include "Foundation/SingletonHolder.h"
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#include <string.h>
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Foundation_BEGIN
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UUIDGenerator::UUIDGenerator(): _ticks(0), _haveNode(false)
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{
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}
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UUIDGenerator::~UUIDGenerator()
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{
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}
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UUID UUIDGenerator::create()
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{
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FastMutex::ScopedLock lock(_mutex);
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if (!_haveNode)
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{
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getNode();
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_haveNode = true;
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}
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Timestamp::UtcTimeVal tv = timeStamp();
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UInt32 timeLow = UInt32(tv & 0xFFFFFFFF);
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UInt16 timeMid = UInt16((tv >> 32) & 0xFFFF);
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UInt16 timeHiAndVersion = UInt16((tv >> 48) & 0x0FFF) + (UUID::UUID_TIME_BASED << 12);
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UInt16 clockSeq = (UInt16(_random.next() >> 4) & 0x3FFF) | 0x8000;
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return UUID(timeLow, timeMid, timeHiAndVersion, clockSeq, _node);
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}
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UUID UUIDGenerator::createFromName(const UUID& nsid, const std::string& name)
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{
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MD5Engine md5;
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return createFromName(nsid, name, md5);
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}
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UUID UUIDGenerator::createFromName(const UUID& nsid, const std::string& name, DigestEngine& de)
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{
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poco_assert_dbg (de.digestLength() >= 16);
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UUID netNsid = nsid;
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netNsid.toNetwork();
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de.reset();
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de.update(&netNsid, sizeof(netNsid));
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de.update(name);
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char buffer[16];
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const DigestEngine::Digest& d = de.digest();
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for (int i = 0; i < 16; ++i)
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{
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buffer[i] = d[i];
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}
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return UUID(buffer, UUID::UUID_NAME_BASED);
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}
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UUID UUIDGenerator::createRandom()
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{
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char buffer[16];
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RandomInputStream ris;
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ris.read(buffer, sizeof(buffer));
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return UUID(buffer, UUID::UUID_RANDOM);
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}
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Timestamp::UtcTimeVal UUIDGenerator::timeStamp()
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{
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Timestamp now;
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for (;;)
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{
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if (now != _lastTime)
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{
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_lastTime = now;
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_ticks = 0;
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break;
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}
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if (_ticks < 100)
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{
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++_ticks;
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break;
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}
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now.update();
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}
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Timestamp::UtcTimeVal tv = now.utcTime();
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return tv + _ticks;
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}
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UUID UUIDGenerator::createOne()
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{
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try
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{
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return create();
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}
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catch (Exception&)
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{
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return createRandom();
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}
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}
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UUIDGenerator& UUIDGenerator::defaultGenerator()
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{
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static SingletonHolder<UUIDGenerator> sh;
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return *sh.get();
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}
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Foundation_END
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//
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// platform-specific code below
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//
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#if defined(POCO_OS_FAMILY_WINDOWS)
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//
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// Windows
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//
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// The following code is based on the example code
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// from the MSDN knowledge base article ID 118623:
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// "How To Get the MAC Address for an Ethernet Adapter".
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//
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#include <windows.h>
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#include <wincon.h>
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#include <nb30.h>
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Foundation_BEGIN
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struct ASTAT
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{
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ADAPTER_STATUS adapt;
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NAME_BUFFER nameBuffer[30];
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};
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void UUIDGenerator::getNode()
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{
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ASTAT adapter;
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NCB ncb;
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LANA_ENUM lenum;
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memset(&ncb, 0, sizeof(ncb));
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ncb.ncb_command = NCBENUM;
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ncb.ncb_buffer = (UCHAR*) &lenum;
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ncb.ncb_length = sizeof(lenum);
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UCHAR rc = Netbios(&ncb);
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if (rc) throw SystemException("cannot enumerate network adapters");
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bool foundEtherNet = false;
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for (int i = 0; i < lenum.length; i++)
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{
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memset(&ncb, 0, sizeof(ncb));
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ncb.ncb_command = NCBRESET;
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ncb.ncb_lana_num = lenum.lana[i];
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rc = Netbios(&ncb);
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if (rc) throw SystemException("cannot determine MAC address (NCBRESET failed)");
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memset(&ncb, 0, sizeof(ncb));
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ncb.ncb_command = NCBASTAT;
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ncb.ncb_lana_num = lenum.lana[i];
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ncb.ncb_buffer = (UCHAR*) &adapter;
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ncb.ncb_length = sizeof(adapter);
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strcpy((char*) ncb.ncb_callname, "*");
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rc = Netbios(&ncb);
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if (rc) throw SystemException("cannot determine MAC address (NCBASTAT failed)");
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if (adapter.adapt.adapter_type == 0xFE)
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{
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memcpy(_node, adapter.adapt.adapter_address, sizeof(_node));
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foundEtherNet = true;
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break;
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}
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}
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if (!foundEtherNet) throw SystemException("cannot determine MAC address (no Ethernet adapter found)");
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}
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Foundation_END
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#elif defined(POCO_OS_FAMILY_BSD) || POCO_OS == POCO_OS_QNX
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//
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// BSD variants
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//
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <ifaddrs.h>
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#include <net/if_dl.h>
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Foundation_BEGIN
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void UUIDGenerator::getNode()
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{
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struct ifaddrs* ifaphead;
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int rc = getifaddrs(&ifaphead);
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if (rc) throw SystemException("cannot get network adapter list");
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bool foundAdapter = false;
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for (struct ifaddrs* ifap = ifaphead; ifap; ifap = ifap->ifa_next)
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{
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if (ifap->ifa_addr && ifap->ifa_addr->sa_family == AF_LINK)
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{
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struct sockaddr_dl* sdl = reinterpret_cast<struct sockaddr_dl*>(ifap->ifa_addr);
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caddr_t ap = (caddr_t) (sdl->sdl_data + sdl->sdl_nlen);
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int alen = sdl->sdl_alen;
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if (ap && alen > 0)
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{
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memcpy(_node, ap, sizeof(_node));
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foundAdapter = true;
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break;
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}
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}
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}
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freeifaddrs(ifaphead);
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if (!foundAdapter) throw SystemException("cannot determine MAC address (no suitable network adapter found)");
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}
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Foundation_END
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#elif defined(__CYGWIN__) || POCO_OS == POCO_OS_LINUX
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//
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// Linux
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//
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#include <sys/ioctl.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <net/if.h>
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#include <arpa/inet.h>
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#include <unistd.h>
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Foundation_BEGIN
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void UUIDGenerator::getNode()
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{
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struct ifreq ifr;
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int s = socket(PF_INET, SOCK_DGRAM, 0);
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if (s == -1) throw SystemException("cannot open socket");
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strcpy(ifr.ifr_name, "eth0");
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int rc = ioctl(s, SIOCGIFHWADDR, &ifr);
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close(s);
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if (rc < 0) throw SystemException("cannot get MAC address");
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struct sockaddr* sa = reinterpret_cast<struct sockaddr*>(&ifr.ifr_addr);
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memcpy(_node, sa->sa_data, sizeof(_node));
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}
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Foundation_END
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#elif defined(POCO_OS_FAMILY_UNIX) || defined(POCO_OS_FAMILY_VMS)
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//
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// Unix/VMS
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//
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#if defined(__VMS)
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#include <ioctl.h>
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#else
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#include <sys/ioctl.h>
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#endif
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#if defined(sun) || defined(__sun)
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#include <sys/sockio.h>
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#endif
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#include <sys/socket.h>
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#include <sys/types.h>
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#include <netinet/in.h>
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#include <net/if.h>
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#if defined(__VMS)
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#include <inet.h>
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#else
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#include <arpa/inet.h>
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#endif
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#include <netdb.h>
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#include <net/if.h>
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#include <net/if_arp.h>
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#include <unistd.h>
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#if defined(__VMS)
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#define MAXHOSTNAMELEN 64
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#endif
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Foundation_BEGIN
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void UUIDGenerator::getNode()
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{
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char name[MAXHOSTNAMELEN];
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if (gethostname(name, sizeof(name)))
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throw SystemException("cannot get host name");
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struct hostent* pHost = gethostbyname(name);
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if (!pHost) throw SystemException("cannot get host IP address");
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int s = socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP);
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if (s == -1) throw SystemException("cannot open socket");
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struct arpreq ar;
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memset(&ar, 0, sizeof(ar));
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struct sockaddr_in* pAddr = reinterpret_cast<struct sockaddr_in*>(&ar.arp_pa);
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pAddr->sin_family = AF_INET;
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memcpy(&pAddr->sin_addr, *pHost->h_addr_list, sizeof(struct in_addr));
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int rc = ioctl(s, SIOCGARP, &ar);
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close(s);
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if (rc < 0) throw SystemException("cannot get MAC address");
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memcpy(_node, ar.arp_ha.sa_data, sizeof(_node));
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}
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Foundation_END
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#endif
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