113 lines
4.2 KiB
C++
113 lines
4.2 KiB
C++
/*
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Copyright (c) 2015, Project OSRM, Dennis Luxen, others
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All rights reserved.
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Redistribution and use in source and binary forms, with or without modification,
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are permitted provided that the following conditions are met:
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Redistributions of source code must retain the above copyright notice, this list
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of conditions and the following disclaimer.
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Redistributions in binary form must reproduce the above copyright notice, this
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list of conditions and the following disclaimer in the documentation and/or
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other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
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ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "util/osrm_exception.hpp"
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#include <boost/uuid/name_generator.hpp>
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#include <boost/uuid/uuid_generators.hpp>
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#include <cstring>
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#include <algorithm>
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#include <string>
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#cmakedefine MD5PREPARE "${MD5PREPARE}"
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#cmakedefine MD5RTREE "${MD5RTREE}"
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#cmakedefine MD5GRAPH "${MD5GRAPH}"
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#cmakedefine MD5OBJECTS "${MD5OBJECTS}"
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FingerPrint FingerPrint::GetValid()
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{
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FingerPrint fingerprint;
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fingerprint.magic_number = 1297240911;
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fingerprint.md5_prepare[32] = fingerprint.md5_tree[32] = fingerprint.md5_graph[32] = fingerprint.md5_objects[32] = '\0';
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// 6ba7b810-9dad-11d1-80b4-00c04fd430c8 is a Well Known UUID representing the DNS
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// namespace. Its use here indicates that we own this part of the UUID space
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// in the DNS realm. *Usually*, we would then generate a UUID based on "something.project-osrm.org",
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// but this whole class is a hack. Anyway, named_uuid needs to be initialized to something
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// before it can be used, and this is as good as anything else for these purposes.
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fingerprint.named_uuid = boost::uuids::string_generator()( "{6ba7b810-9dad-11d1-80b4-00c04fd430c8}");
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boost::uuids::name_generator gen(fingerprint.named_uuid);
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std::string temp_string;
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std::memcpy(fingerprint.md5_prepare, MD5PREPARE, 32);
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temp_string += fingerprint.md5_prepare;
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std::memcpy(fingerprint.md5_tree, MD5RTREE, 32);
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temp_string += fingerprint.md5_tree;
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std::memcpy(fingerprint.md5_graph, MD5GRAPH, 32);
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temp_string += fingerprint.md5_graph;
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std::memcpy(fingerprint.md5_objects, MD5OBJECTS, 32);
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temp_string += fingerprint.md5_objects;
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fingerprint.named_uuid = gen(temp_string);
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return fingerprint;
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}
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const boost::uuids::uuid &FingerPrint::GetFingerPrint() const { return named_uuid; }
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bool FingerPrint::IsMagicNumberOK(const FingerPrint& other) const { return other.magic_number == magic_number; }
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bool FingerPrint::TestGraphUtil(const FingerPrint &other) const
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{
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if (!IsMagicNumberOK(other))
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{
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throw osrm::exception("hsgr input file misses magic number. Check or reprocess the file");
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}
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return std::equal(md5_graph, md5_graph + 32, other.md5_graph);
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}
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bool FingerPrint::TestPrepare(const FingerPrint &other) const
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{
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if (!IsMagicNumberOK(other))
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{
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throw osrm::exception("osrm input file misses magic number. Check or reprocess the file");
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}
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return std::equal(md5_prepare, md5_prepare + 32, other.md5_prepare);
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}
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bool FingerPrint::TestRTree(const FingerPrint &other) const
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{
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if (!IsMagicNumberOK(other))
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{
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throw osrm::exception("r-tree input file misses magic number. Check or reprocess the file");
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}
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return std::equal(md5_tree, md5_tree + 32, other.md5_tree);
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}
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bool FingerPrint::TestQueryObjects(const FingerPrint &other) const
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{
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if (!IsMagicNumberOK(other))
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{
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throw osrm::exception("missing magic number. Check or reprocess the file");
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}
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return std::equal(md5_objects, md5_objects + 32, other.md5_objects);
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}
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