a9dc7c2f59
See CVE-2014-4607 http://www.openwall.com/lists/oss-security/2014/06/26/20 function old new delta lzo1x_decompress_safe 1010 1031 +21 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
96 lines
3.4 KiB
C
96 lines
3.4 KiB
C
/*
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This file is part of the LZO real-time data compression library.
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Copyright (C) 1996..2008 Markus Franz Xaver Johannes Oberhumer
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All Rights Reserved.
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Markus F.X.J. Oberhumer <markus@oberhumer.com>
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http://www.oberhumer.com/opensource/lzo/
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The LZO library is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of
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the License, or (at your option) any later version.
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The LZO library 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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You should have received a copy of the GNU General Public License
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along with the LZO library; see the file COPYING.
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If not, write to the Free Software Foundation, Inc.,
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include "liblzo_interface.h"
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/* lzo-2.03/src/config1x.h */
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#define M2_MIN_LEN 3
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#define M2_MAX_LEN 8
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#define M3_MAX_LEN 33
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#define M4_MAX_LEN 9
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#define M1_MAX_OFFSET 0x0400
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#define M2_MAX_OFFSET 0x0800
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#define M3_MAX_OFFSET 0x4000
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#define M4_MAX_OFFSET 0xbfff
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#define M1_MARKER 0
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#define M3_MARKER 32
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#define M4_MARKER 16
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#define MX_MAX_OFFSET (M1_MAX_OFFSET + M2_MAX_OFFSET)
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#define MIN_LOOKAHEAD (M2_MAX_LEN + 1)
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#define LZO_EOF_CODE
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/* lzo-2.03/src/lzo_dict.h */
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#define GINDEX(m_pos,m_off,dict,dindex,in) m_pos = dict[dindex]
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#define DX2(p,s1,s2) \
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(((((unsigned)((p)[2]) << (s2)) ^ (p)[1]) << (s1)) ^ (p)[0])
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//#define DA3(p,s1,s2,s3) ((DA2((p)+1,s2,s3) << (s1)) + (p)[0])
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//#define DS3(p,s1,s2,s3) ((DS2((p)+1,s2,s3) << (s1)) - (p)[0])
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#define DX3(p,s1,s2,s3) ((DX2((p)+1,s2,s3) << (s1)) ^ (p)[0])
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#define D_SIZE (1U << D_BITS)
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#define D_MASK ((1U << D_BITS) - 1)
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#define D_HIGH ((D_MASK >> 1) + 1)
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#define LZO_CHECK_MPOS_NON_DET(m_pos,m_off,in,ip,max_offset) \
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( \
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m_pos = ip - (unsigned)(ip - m_pos), \
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((uintptr_t)m_pos < (uintptr_t)in \
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|| (m_off = (unsigned)(ip - m_pos)) <= 0 \
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|| m_off > max_offset) \
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)
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#define DENTRY(p,in) (p)
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#define UPDATE_I(dict,drun,index,p,in) dict[index] = DENTRY(p,in)
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#define DMS(v,s) ((unsigned) (((v) & (D_MASK >> (s))) << (s)))
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#define DM(v) ((unsigned) ((v) & D_MASK))
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#define DMUL(a,b) ((unsigned) ((a) * (b)))
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/* lzo-2.03/src/lzo_ptr.h */
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#define pd(a,b) ((unsigned)((a)-(b)))
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# define TEST_IP (ip < ip_end)
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# define NEED_IP(x) \
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if ((unsigned)(ip_end - ip) < (unsigned)(x)) goto input_overrun
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# define TEST_IV(x) if ((x) > (unsigned)0 - (511)) goto input_overrun
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# undef TEST_OP /* don't need both of the tests here */
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# define TEST_OP 1
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# define NEED_OP(x) \
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if ((unsigned)(op_end - op) < (unsigned)(x)) goto output_overrun
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# define TEST_OV(x) if ((x) > (unsigned)0 - (511)) goto output_overrun
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#define HAVE_ANY_OP 1
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//#if defined(LZO_TEST_OVERRUN_LOOKBEHIND)
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# define TEST_LB(m_pos) if (m_pos < out || m_pos >= op) goto lookbehind_overrun
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//# define TEST_LBO(m_pos,o) if (m_pos < out || m_pos >= op - (o)) goto lookbehind_overrun
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//#else
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//# define TEST_LB(m_pos) ((void) 0)
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//# define TEST_LBO(m_pos,o) ((void) 0)
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//#endif
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