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libmspack
libmspack-reject-blank-filenames.patch
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File libmspack-reject-blank-filenames.patch of Package libmspack
From 8759da8db6ec9e866cb8eb143313f397f925bb4f Mon Sep 17 00:00:00 2001 From: Stuart Caie <kyzer@cabextract.org.uk> Date: Wed, 17 Oct 2018 11:29:03 +0100 Subject: [PATCH] Avoid returning CHM file entries that are "blank" because they have embedded null bytes --- libmspack/ChangeLog | 6 ++++++ libmspack/mspack/chmd.c | 6 +++--- 2 files changed, 9 insertions(+), 3 deletions(-) Index: libmspack-0.6alpha/mspack/chmd.c =================================================================== --- libmspack-0.6alpha.orig/mspack/chmd.c +++ libmspack-0.6alpha/mspack/chmd.c @@ -452,6 +452,9 @@ static int chmd_read_headers(struct mspa READ_ENCINT(offset); READ_ENCINT(length); + /* ignore blank or one-char (e.g. "/") filenames we'd return as blank */ + if (name_len < 2 || !name[0] || !name[1]) continue; + /* empty files and directory names are stored as a file entry at * offset 0 with length 0. We want to keep empty files, but not * directory names, which end with a "/" */
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