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git/t/t5814-proto-disable-ext.sh

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transport: add a protocol-whitelist environment variable If we are cloning an untrusted remote repository into a sandbox, we may also want to fetch remote submodules in order to get the complete view as intended by the other side. However, that opens us up to attacks where a malicious user gets us to clone something they would not otherwise have access to (this is not necessarily a problem by itself, but we may then act on the cloned contents in a way that exposes them to the attacker). Ideally such a setup would sandbox git entirely away from high-value items, but this is not always practical or easy to set up (e.g., OS network controls may block multiple protocols, and we would want to enable some but not others). We can help this case by providing a way to restrict particular protocols. We use a whitelist in the environment. This is more annoying to set up than a blacklist, but defaults to safety if the set of protocols git supports grows). If no whitelist is specified, we continue to default to allowing all protocols (this is an "unsafe" default, but since the minority of users will want this sandboxing effect, it is the only sensible one). A note on the tests: ideally these would all be in a single test file, but the git-daemon and httpd test infrastructure is an all-or-nothing proposition rather than a test-by-test prerequisite. By putting them all together, we would be unable to test the file-local code on machines without apache. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
9 years ago
#!/bin/sh
test_description='test disabling of remote-helper paths in clone/fetch'
. ./test-lib.sh
. "$TEST_DIRECTORY/lib-proto-disable.sh"
setup_ext_wrapper
test_expect_success 'setup repository to clone' '
test_commit one &&
mkdir remote &&
git init --bare remote/repo.git &&
git push remote/repo.git HEAD
'
test_proto "remote-helper" ext "ext::fake-remote %S repo.git"
test_done