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101 lines
3.0 KiB
C++
101 lines
3.0 KiB
C++
// ***************************************************************** -*- C++ -*-
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/*
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* Copyright (C) 2004-2021 Exiv2 authors
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* This program is part of the Exiv2 distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, 5th Floor, Boston, MA 02110-1301 USA.
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*/
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#include <exiv2/basicio.hpp>
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#include <gtest/gtest.h>
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using namespace Exiv2;
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TEST(MemIo, seek_out_of_bounds_00)
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{
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byte buf[1024];
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memset(buf, 0, sizeof(buf));
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MemIo io(buf, sizeof(buf));
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ASSERT_FALSE(io.eof());
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// Regression test for bug reported in https://github.com/Exiv2/exiv2/pull/945
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// The problem is that MemIo::seek() does not check that the new offset is
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// in bounds.
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byte tmp[16];
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ASSERT_EQ(io.seek(0x10000000, BasicIo::beg), 1);
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ASSERT_TRUE(io.eof());
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// The seek was invalid, so the offset didn't change and this read still works.
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const long sizeTmp = static_cast<long>(sizeof(sizeTmp));
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ASSERT_EQ(io.read(tmp, sizeTmp), sizeTmp);
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}
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TEST(MemIo, seek_out_of_bounds_01)
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{
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byte buf[1024];
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memset(buf, 0, sizeof(buf));
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MemIo io(buf, sizeof(buf));
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ASSERT_FALSE(io.eof());
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byte tmp[16];
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// Seek to the end of the file.
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ASSERT_EQ(io.seek(0, BasicIo::end), 0);
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ASSERT_EQ(io.read(tmp, sizeof(tmp)), 0);
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// Try to seek past the end of the file.
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ASSERT_EQ(io.seek(0x10000000, BasicIo::end), 1);
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ASSERT_TRUE(io.eof());
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ASSERT_EQ(io.read(tmp, sizeof(tmp)), 0);
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}
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TEST(MemIo, seek_out_of_bounds_02)
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{
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byte buf[1024];
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memset(buf, 0, sizeof(buf));
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MemIo io(buf, sizeof(buf));
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ASSERT_FALSE(io.eof());
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byte tmp[16];
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// Try to seek past the end of the file.
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ASSERT_EQ(io.seek(0x10000000, BasicIo::cur), 1);
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ASSERT_TRUE(io.eof());
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// The seek was invalid, so the offset didn't change and this read still works.
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const long sizeTmp = static_cast<long>(sizeof(sizeTmp));
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ASSERT_EQ(io.read(tmp, sizeTmp), sizeTmp);
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}
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TEST(MemIo, seek_out_of_bounds_03)
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{
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byte buf[1024];
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memset(buf, 0, sizeof(buf));
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MemIo io(buf, sizeof(buf));
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ASSERT_FALSE(io.eof());
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byte tmp[16];
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// Try to seek past the beginning of the file.
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ASSERT_EQ(io.seek(-0x10000000, BasicIo::cur), 1);
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ASSERT_FALSE(io.eof());
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// The seek was invalid, so the offset didn't change and this read still works.
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const long sizeTmp = static_cast<long>(sizeof(sizeTmp));
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ASSERT_EQ(io.read(tmp, sizeTmp), sizeTmp);
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}
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