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46 lines
1.7 KiB
46 lines
1.7 KiB
6 years ago
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--- unzip60/extract.c 2010-04-03 14:41:55 -0500
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+++ unzip60/extract.c 2014-12-03 15:33:35 -0600
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@@ -1,5 +1,5 @@
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/*
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- Copyright (c) 1990-2009 Info-ZIP. All rights reserved.
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+ Copyright (c) 1990-2014 Info-ZIP. All rights reserved.
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See the accompanying file LICENSE, version 2009-Jan-02 or later
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(the contents of which are also included in unzip.h) for terms of use.
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@@ -298,6 +298,8 @@
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#ifndef SFX
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static ZCONST char Far InconsistEFlength[] = "bad extra-field entry:\n \
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EF block length (%u bytes) exceeds remaining EF data (%u bytes)\n";
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+ static ZCONST char Far TooSmallEFlength[] = "bad extra-field entry:\n \
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+ EF block length (%u bytes) invalid (< %d)\n";
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static ZCONST char Far InvalidComprDataEAs[] =
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" invalid compressed data for EAs\n";
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# if (defined(WIN32) && defined(NTSD_EAS))
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@@ -2023,7 +2025,8 @@
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ebID = makeword(ef);
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ebLen = (unsigned)makeword(ef+EB_LEN);
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- if (ebLen > (ef_len - EB_HEADSIZE)) {
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+ if (ebLen > (ef_len - EB_HEADSIZE))
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+ {
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/* Discovered some extra field inconsistency! */
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if (uO.qflag)
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Info(slide, 1, ((char *)slide, "%-22s ",
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@@ -2032,6 +2035,16 @@
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ebLen, (ef_len - EB_HEADSIZE)));
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return PK_ERR;
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}
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+ else if (ebLen < EB_HEADSIZE)
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+ {
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+ /* Extra block length smaller than header length. */
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+ if (uO.qflag)
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+ Info(slide, 1, ((char *)slide, "%-22s ",
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+ FnFilter1(G.filename)));
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+ Info(slide, 1, ((char *)slide, LoadFarString(TooSmallEFlength),
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+ ebLen, EB_HEADSIZE));
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+ return PK_ERR;
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+ }
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switch (ebID) {
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case EF_OS2:
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