From 785a04298177e155dc7391e7234945b38b624e34 Mon Sep 17 00:00:00 2001 From: Jeff King Date: Wed, 23 Jan 2013 01:23:27 -0500 Subject: [PATCH] archive-tar: use parse_config_key when parsing config MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit This is fewer lines of code, but more importantly, fixes a bogus pointer offset. We are looking for "tar." in the section, but later assume that the dot we found is at offset 9, not 3. This is a holdover from an earlier iteration of 767cf45 which called the section "tarfilter". As a result, we could erroneously reject some filters with dots in their name, as well as read uninitialized memory. Reported by (and test by) René Scharfe. Signed-off-by: Jeff King Reviewed-by: Jonathan Nieder Signed-off-by: Junio C Hamano --- archive-tar.c | 10 +--------- t/t5000-tar-tree.sh | 3 ++- 2 files changed, 3 insertions(+), 10 deletions(-) diff --git a/archive-tar.c b/archive-tar.c index d1cce46e33..719b6298e6 100644 --- a/archive-tar.c +++ b/archive-tar.c @@ -327,20 +327,12 @@ static struct archiver *find_tar_filter(const char *name, int len) static int tar_filter_config(const char *var, const char *value, void *data) { struct archiver *ar; - const char *dot; const char *name; const char *type; int namelen; - if (prefixcmp(var, "tar.")) + if (parse_config_key(var, "tar", &name, &namelen, &type) < 0 || !name) return 0; - dot = strrchr(var, '.'); - if (dot == var + 9) - return 0; - - name = var + 4; - namelen = dot - name; - type = dot + 1; ar = find_tar_filter(name, namelen); if (!ar) { diff --git a/t/t5000-tar-tree.sh b/t/t5000-tar-tree.sh index e7c240fc1f..3fbd366ec3 100755 --- a/t/t5000-tar-tree.sh +++ b/t/t5000-tar-tree.sh @@ -212,7 +212,8 @@ test_expect_success 'git-archive --prefix=olde-' ' test_expect_success 'setup tar filters' ' git config tar.tar.foo.command "tr ab ba" && git config tar.bar.command "tr ab ba" && - git config tar.bar.remote true + git config tar.bar.remote true && + git config tar.invalid baz ' test_expect_success 'archive --list mentions user filter' ' -- 2.43.2