mirror of
https://github.com/NixOS/nixpkgs.git
synced 2024-12-18 10:56:53 +00:00
137 lines
5.1 KiB
Diff
137 lines
5.1 KiB
Diff
From RedHat: https://bugzilla.redhat.com/attachment.cgi?id=969625&action=diff
|
|
(unzip60/ path prefix added)
|
|
|
|
--- unzip60/process.c 2009-03-06 02:25:10.000000000 +0100
|
|
+++ unzip60/process.c 2014-12-05 22:42:39.000000000 +0100
|
|
@@ -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.
|
|
@@ -1888,48 +1888,82 @@ int getZip64Data(__G__ ef_buf, ef_len)
|
|
and a 4-byte version of disk start number.
|
|
Sets both local header and central header fields. Not terribly clever,
|
|
but it means that this procedure is only called in one place.
|
|
+
|
|
+ 2014-12-05 SMS.
|
|
+ Added checks to ensure that enough data are available before calling
|
|
+ makeint64() or makelong(). Replaced various sizeof() values with
|
|
+ simple ("4" or "8") constants. (The Zip64 structures do not depend
|
|
+ on our variable sizes.) Error handling is crude, but we should now
|
|
+ stay within the buffer.
|
|
---------------------------------------------------------------------------*/
|
|
|
|
+#define Z64FLGS 0xffff
|
|
+#define Z64FLGL 0xffffffff
|
|
+
|
|
if (ef_len == 0 || ef_buf == NULL)
|
|
return PK_COOL;
|
|
|
|
Trace((stderr,"\ngetZip64Data: scanning extra field of length %u\n",
|
|
ef_len));
|
|
|
|
- while (ef_len >= EB_HEADSIZE) {
|
|
+ while (ef_len >= EB_HEADSIZE)
|
|
+ {
|
|
eb_id = makeword(EB_ID + ef_buf);
|
|
eb_len = makeword(EB_LEN + ef_buf);
|
|
|
|
- if (eb_len > (ef_len - EB_HEADSIZE)) {
|
|
- /* discovered some extra field inconsistency! */
|
|
+ if (eb_len > (ef_len - EB_HEADSIZE))
|
|
+ {
|
|
+ /* Extra block length exceeds remaining extra field length. */
|
|
Trace((stderr,
|
|
"getZip64Data: block length %u > rest ef_size %u\n", eb_len,
|
|
ef_len - EB_HEADSIZE));
|
|
break;
|
|
}
|
|
- if (eb_id == EF_PKSZ64) {
|
|
-
|
|
+ if (eb_id == EF_PKSZ64)
|
|
+ {
|
|
int offset = EB_HEADSIZE;
|
|
|
|
- if (G.crec.ucsize == 0xffffffff || G.lrec.ucsize == 0xffffffff){
|
|
- G.lrec.ucsize = G.crec.ucsize = makeint64(offset + ef_buf);
|
|
- offset += sizeof(G.crec.ucsize);
|
|
+ if ((G.crec.ucsize == Z64FLGL) || (G.lrec.ucsize == Z64FLGL))
|
|
+ {
|
|
+ if (offset+ 8 > ef_len)
|
|
+ return PK_ERR;
|
|
+
|
|
+ G.crec.ucsize = G.lrec.ucsize = makeint64(offset + ef_buf);
|
|
+ offset += 8;
|
|
}
|
|
- if (G.crec.csize == 0xffffffff || G.lrec.csize == 0xffffffff){
|
|
- G.csize = G.lrec.csize = G.crec.csize = makeint64(offset + ef_buf);
|
|
- offset += sizeof(G.crec.csize);
|
|
+
|
|
+ if ((G.crec.csize == Z64FLGL) || (G.lrec.csize == Z64FLGL))
|
|
+ {
|
|
+ if (offset+ 8 > ef_len)
|
|
+ return PK_ERR;
|
|
+
|
|
+ G.csize = G.crec.csize = G.lrec.csize = makeint64(offset + ef_buf);
|
|
+ offset += 8;
|
|
}
|
|
- if (G.crec.relative_offset_local_header == 0xffffffff){
|
|
+
|
|
+ if (G.crec.relative_offset_local_header == Z64FLGL)
|
|
+ {
|
|
+ if (offset+ 8 > ef_len)
|
|
+ return PK_ERR;
|
|
+
|
|
G.crec.relative_offset_local_header = makeint64(offset + ef_buf);
|
|
- offset += sizeof(G.crec.relative_offset_local_header);
|
|
+ offset += 8;
|
|
}
|
|
- if (G.crec.disk_number_start == 0xffff){
|
|
+
|
|
+ if (G.crec.disk_number_start == Z64FLGS)
|
|
+ {
|
|
+ if (offset+ 4 > ef_len)
|
|
+ return PK_ERR;
|
|
+
|
|
G.crec.disk_number_start = (zuvl_t)makelong(offset + ef_buf);
|
|
- offset += sizeof(G.crec.disk_number_start);
|
|
+ offset += 4;
|
|
}
|
|
+#if 0
|
|
+ break; /* Expect only one EF_PKSZ64 block. */
|
|
+#endif /* 0 */
|
|
}
|
|
|
|
- /* Skip this extra field block */
|
|
+ /* Skip this extra field block. */
|
|
ef_buf += (eb_len + EB_HEADSIZE);
|
|
ef_len -= (eb_len + EB_HEADSIZE);
|
|
}
|
|
--- unzip60/fileio.c 2009-04-20 02:03:44.000000000 +0200
|
|
+++ unzip60/fileio.c 2014-12-05 22:44:16.000000000 +0100
|
|
@@ -176,6 +176,8 @@ static ZCONST char Far FilenameTooLongTr
|
|
#endif
|
|
static ZCONST char Far ExtraFieldTooLong[] =
|
|
"warning: extra field too long (%d). Ignoring...\n";
|
|
+static ZCONST char Far ExtraFieldCorrupt[] =
|
|
+ "warning: extra field (type: 0x%04x) corrupt. Continuing...\n";
|
|
|
|
#ifdef WINDLL
|
|
static ZCONST char Far DiskFullQuery[] =
|
|
@@ -2295,7 +2297,12 @@ int do_string(__G__ length, option) /*
|
|
if (readbuf(__G__ (char *)G.extra_field, length) == 0)
|
|
return PK_EOF;
|
|
/* Looks like here is where extra fields are read */
|
|
- getZip64Data(__G__ G.extra_field, length);
|
|
+ if (getZip64Data(__G__ G.extra_field, length) != PK_COOL)
|
|
+ {
|
|
+ Info(slide, 0x401, ((char *)slide,
|
|
+ LoadFarString( ExtraFieldCorrupt), EF_PKSZ64));
|
|
+ error = PK_WARN;
|
|
+ }
|
|
#ifdef UNICODE_SUPPORT
|
|
G.unipath_filename = NULL;
|
|
if (G.UzO.U_flag < 2) {
|