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/*
* Copyright 2007, Intel Corporation
* Copyright 2009, Red Hat Inc.
*
* This file is part of Abrt.
*
* This program file is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program in a file named COPYING; if not, write to the
* Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA
*
* Authors:
* Anton Arapov <anton@redhat.com>
* Arjan van de Ven <arjan@linux.intel.com>
*/
#include "Kerneloops.h"
#include "DebugDump.h"
#include "ABRTException.h"
#include "CommLayerInner.h"
#include <sstream>
#define FILENAME_KERNELOOPS "kerneloops"
std::string CAnalyzerKerneloops::GetLocalUUID(const std::string& pDebugDumpDir)
{
comm_layer_inner_status("Getting local/global universal unique identification...");
std::string m_sOops;
std::stringstream m_sHash;
CDebugDump m_pDebugDump;
m_pDebugDump.Open(pDebugDumpDir);
m_pDebugDump.LoadText(FILENAME_KERNELOOPS, m_sOops);
/* An algorithm proposed by Donald E. Knuth in The Art Of Computer
* Programming Volume 3, under the topic of sorting and search
* chapter 6.4.
*/
unsigned int m_nHash = static_cast<unsigned int>(m_sOops.length());
for(std::size_t i = 0; i < m_sOops.length(); i++)
{
m_nHash = ((m_nHash << 5) ^ (m_nHash >> 27)) ^ m_sOops[i];
}
m_sHash << (m_nHash & 0x7FFFFFFF);
return m_sHash.str();
}
std::string CAnalyzerKerneloops::GetGlobalUUID(const std::string& pDebugDumpDir)
{
return GetLocalUUID(pDebugDumpDir);
}
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