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From f190eb996fb77a09090a5aec9191851e55ae160e Mon Sep 17 00:00:00 2001
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From: Stuart Caie <kyzer@cabextract.org.uk>
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Date: Mon, 18 Feb 2019 13:04:58 +0000
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Subject: [PATCH 6/6] length checks when looking for control files
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(cherry picked from commit 2f084136cfe0d05e5bf5703f3e83c6d955234b4d)
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---
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libmspack/trunk/mspack/chmd.c | 22 ++++++++++------------
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1 file changed, 10 insertions(+), 12 deletions(-)
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diff --git a/libmspack/trunk/mspack/chmd.c b/libmspack/trunk/mspack/chmd.c
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index beaccb7..783f511 100644
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--- a/libmspack/trunk/mspack/chmd.c
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+++ b/libmspack/trunk/mspack/chmd.c
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@@ -483,20 +483,18 @@ static int chmd_read_headers(struct mspack_system *sys, struct mspack_file *fh,
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if (name[0] == ':' && name[1] == ':') {
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/* system file */
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- if (mspack_memcmp(&name[2], &content_name[2], 31L) == 0) {
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- if (mspack_memcmp(&name[33], &content_name[33], 8L) == 0) {
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- chm->sec1.content = fi;
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- }
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- else if (mspack_memcmp(&name[33], &control_name[33], 11L) == 0) {
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- chm->sec1.control = fi;
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- }
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- else if (mspack_memcmp(&name[33], &spaninfo_name[33], 8L) == 0) {
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- chm->sec1.spaninfo = fi;
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- }
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- else if (mspack_memcmp(&name[33], &rtable_name[33], 72L) == 0) {
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+ if (name_len == 40 && mspack_memcmp(name, content_name, 40) == 0) {
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+ chm->sec1.content = fi;
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+ }
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+ else if (name_len == 44 && mspack_memcmp(name, control_name, 44) == 0) {
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+ chm->sec1.control = fi;
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+ }
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+ else if (name_len == 41 && mspack_memcmp(name, spaninfo_name, 41) == 0) {
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+ chm->sec1.spaninfo = fi;
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+ }
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+ else if (name_len == 105 && mspack_memcmp(name, rtable_name, 105) == 0) {
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chm->sec1.rtable = fi;
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}
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- }
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fi->next = chm->sysfiles;
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chm->sysfiles = fi;
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}
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--
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2.22.0
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