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-rw-r--r--libre/unzip/crc32.patch45
1 files changed, 45 insertions, 0 deletions
diff --git a/libre/unzip/crc32.patch b/libre/unzip/crc32.patch
new file mode 100644
index 000000000..43b29d783
--- /dev/null
+++ b/libre/unzip/crc32.patch
@@ -0,0 +1,45 @@
+--- unzip60/extract.c 2010-04-03 14:41:55 -0500
++++ unzip60/extract.c 2014-12-03 15:33:35 -0600
+@@ -1,5 +1,5 @@
+ /*
+- Copyright (c) 1990-2009 Info-ZIP. All rights reserved.
++ Copyright (c) 1990-2014 Info-ZIP. All rights reserved.
+
+ See the accompanying file LICENSE, version 2009-Jan-02 or later
+ (the contents of which are also included in unzip.h) for terms of use.
+@@ -298,6 +298,8 @@
+ #ifndef SFX
+ static ZCONST char Far InconsistEFlength[] = "bad extra-field entry:\n \
+ EF block length (%u bytes) exceeds remaining EF data (%u bytes)\n";
++ static ZCONST char Far TooSmallEFlength[] = "bad extra-field entry:\n \
++ EF block length (%u bytes) invalid (< %d)\n";
+ static ZCONST char Far InvalidComprDataEAs[] =
+ " invalid compressed data for EAs\n";
+ # if (defined(WIN32) && defined(NTSD_EAS))
+@@ -2023,7 +2025,8 @@
+ ebID = makeword(ef);
+ ebLen = (unsigned)makeword(ef+EB_LEN);
+
+- if (ebLen > (ef_len - EB_HEADSIZE)) {
++ if (ebLen > (ef_len - EB_HEADSIZE))
++ {
+ /* Discovered some extra field inconsistency! */
+ if (uO.qflag)
+ Info(slide, 1, ((char *)slide, "%-22s ",
+@@ -2032,6 +2035,16 @@
+ ebLen, (ef_len - EB_HEADSIZE)));
+ return PK_ERR;
+ }
++ else if (ebLen < EB_HEADSIZE)
++ {
++ /* Extra block length smaller than header length. */
++ if (uO.qflag)
++ Info(slide, 1, ((char *)slide, "%-22s ",
++ FnFilter1(G.filename)));
++ Info(slide, 1, ((char *)slide, LoadFarString(TooSmallEFlength),
++ ebLen, EB_HEADSIZE));
++ return PK_ERR;
++ }
+
+ switch (ebID) {
+ case EF_OS2: