list-objects-filter: disable 'sparse:path' filters
If someone wants to use as a filter a sparse file that is in the
repository, something like "--filter=sparse:oid=<ref>:<path>"
already works.
So 'sparse:path' is only interesting if the sparse file is not in
the repository. In this case though the current implementation has
a big security issue, as it makes it possible to ask the server to
read any file, like for example /etc/password, and to explore the
filesystem, as well as individual lines of files.
If someone is interested in using a sparse file that is not in the
repository as a filter, then at the minimum a config option, such
as "uploadpack.sparsePathFilter", should be implemented first to
restrict the directory from which the files specified by
'sparse:path' can be read.
For now though, let's just disable 'sparse:path' filters.
Helped-by: Matthew DeVore <matvore@google.com>
Helped-by: Jeff Hostetler <git@jeffhostetler.com>
Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/t/t5317-pack-objects-filter-objects.sh b/t/t5317-pack-objects-filter-objects.sh
index 4c0201c..2d2f5d0 100755
--- a/t/t5317-pack-objects-filter-objects.sh
+++ b/t/t5317-pack-objects-filter-objects.sh
@@ -277,6 +277,10 @@
'
# Test sparse:path=<path> filter.
+# !!!!
+# NOTE: sparse:path filter support has been dropped for security reasons,
+# so the tests have been changed to make sure that using it fails.
+# !!!!
# Use a local file containing a sparse-checkout specification to filter
# out blobs not required for the corresponding sparse-checkout. We do not
# require sparse-checkout to actually be enabled.
@@ -315,73 +319,24 @@
test_cmp expected observed
'
-test_expect_success 'verify sparse:path=pattern1' '
- git -C r3 ls-files -s dir1/sparse1 dir1/sparse2 >ls_files_result &&
- awk -f print_2.awk ls_files_result |
- sort >expected &&
-
- git -C r3 pack-objects --revs --stdout --filter=sparse:path=../pattern1 >filter.pack <<-EOF &&
+test_expect_success 'verify sparse:path=pattern1 fails' '
+ test_must_fail git -C r3 pack-objects --revs --stdout \
+ --filter=sparse:path=../pattern1 <<-EOF
HEAD
EOF
- git -C r3 index-pack ../filter.pack &&
-
- git -C r3 verify-pack -v ../filter.pack >verify_result &&
- grep blob verify_result |
- awk -f print_1.awk |
- sort >observed &&
-
- test_cmp expected observed
'
-test_expect_success 'verify normal and sparse:path=pattern1 packfiles have same commits/trees' '
- git -C r3 verify-pack -v ../all.pack >verify_result &&
- grep -E "commit|tree" verify_result |
- awk -f print_1.awk |
- sort >expected &&
-
- git -C r3 verify-pack -v ../filter.pack >verify_result &&
- grep -E "commit|tree" verify_result |
- awk -f print_1.awk |
- sort >observed &&
-
- test_cmp expected observed
-'
-
-test_expect_success 'verify sparse:path=pattern2' '
- git -C r3 ls-files -s sparse1 dir1/sparse1 >ls_files_result &&
- awk -f print_2.awk ls_files_result |
- sort >expected &&
-
- git -C r3 pack-objects --revs --stdout --filter=sparse:path=../pattern2 >filter.pack <<-EOF &&
+test_expect_success 'verify sparse:path=pattern2 fails' '
+ test_must_fail git -C r3 pack-objects --revs --stdout \
+ --filter=sparse:path=../pattern2 <<-EOF
HEAD
EOF
- git -C r3 index-pack ../filter.pack &&
-
- git -C r3 verify-pack -v ../filter.pack >verify_result &&
- grep blob verify_result |
- awk -f print_1.awk |
- sort >observed &&
-
- test_cmp expected observed
-'
-
-test_expect_success 'verify normal and sparse:path=pattern2 packfiles have same commits/trees' '
- git -C r3 verify-pack -v ../all.pack >verify_result &&
- grep -E "commit|tree" verify_result |
- awk -f print_1.awk |
- sort >expected &&
-
- git -C r3 verify-pack -v ../filter.pack >verify_result &&
- grep -E "commit|tree" verify_result |
- awk -f print_1.awk |
- sort >observed &&
-
- test_cmp expected observed
'
# Test sparse:oid=<oid-ish> filter.
-# Like sparse:path, but we get the sparse-checkout specification from
-# a blob rather than a file on disk.
+# Use a blob containing a sparse-checkout specification to filter
+# out blobs not required for the corresponding sparse-checkout. We do not
+# require sparse-checkout to actually be enabled.
test_expect_success 'setup r4' '
git init r4 &&
