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f1762d772e
Previously the `GIT_ALLOW_PROTOCOL` environment variable was used to specify a whitelist of protocols to be used in clone/fetch/push commands. This patch introduces new configuration options for more fine-grained control for allowing/disallowing protocols. This also has the added benefit of allowing easier construction of a protocol whitelist on systems where setting an environment variable is non-trivial. Now users can specify a policy to be used for each type of protocol via the 'protocol.<name>.allow' config option. A default policy for all unconfigured protocols can be set with the 'protocol.allow' config option. If no user configured default is made git will allow known-safe protocols (http, https, git, ssh, file), disallow known-dangerous protocols (ext), and have a default policy of `user` for all other protocols. The supported policies are `always`, `never`, and `user`. The `user` policy can be used to configure a protocol to be usable when explicitly used by a user, while disallowing it for commands which run clone/fetch/push commands without direct user intervention (e.g. recursive initialization of submodules). Commands which can potentially clone/fetch/push from untrusted repositories without user intervention can export `GIT_PROTOCOL_FROM_USER` with a value of '0' to prevent protocols configured to the `user` policy from being used. Fix remote-ext tests to use the new config to allow the ext protocol to be tested. Based on a patch by Jeff King <peff@peff.net> Signed-off-by: Brandon Williams <bmwill@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
216 lines
5.1 KiB
Bash
216 lines
5.1 KiB
Bash
# Test routines for checking protocol disabling.
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# Test clone/fetch/push with GIT_ALLOW_PROTOCOL whitelist
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test_whitelist () {
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desc=$1
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proto=$2
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url=$3
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test_expect_success "clone $desc (enabled)" '
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rm -rf tmp.git &&
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(
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GIT_ALLOW_PROTOCOL=$proto &&
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export GIT_ALLOW_PROTOCOL &&
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git clone --bare "$url" tmp.git
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)
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'
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test_expect_success "fetch $desc (enabled)" '
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(
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cd tmp.git &&
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GIT_ALLOW_PROTOCOL=$proto &&
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export GIT_ALLOW_PROTOCOL &&
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git fetch
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)
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'
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test_expect_success "push $desc (enabled)" '
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(
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cd tmp.git &&
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GIT_ALLOW_PROTOCOL=$proto &&
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export GIT_ALLOW_PROTOCOL &&
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git push origin HEAD:pushed
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)
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'
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test_expect_success "push $desc (disabled)" '
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(
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cd tmp.git &&
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GIT_ALLOW_PROTOCOL=none &&
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export GIT_ALLOW_PROTOCOL &&
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test_must_fail git push origin HEAD:pushed
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)
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'
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test_expect_success "fetch $desc (disabled)" '
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(
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cd tmp.git &&
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GIT_ALLOW_PROTOCOL=none &&
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export GIT_ALLOW_PROTOCOL &&
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test_must_fail git fetch
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)
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'
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test_expect_success "clone $desc (disabled)" '
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rm -rf tmp.git &&
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(
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GIT_ALLOW_PROTOCOL=none &&
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export GIT_ALLOW_PROTOCOL &&
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test_must_fail git clone --bare "$url" tmp.git
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)
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'
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test_expect_success "clone $desc (env var has precedence)" '
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rm -rf tmp.git &&
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(
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GIT_ALLOW_PROTOCOL=none &&
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export GIT_ALLOW_PROTOCOL &&
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test_must_fail git -c protocol.allow=always clone --bare "$url" tmp.git &&
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test_must_fail git -c protocol.$proto.allow=always clone --bare "$url" tmp.git
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)
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'
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}
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test_config () {
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desc=$1
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proto=$2
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url=$3
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# Test clone/fetch/push with protocol.<type>.allow config
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test_expect_success "clone $desc (enabled with config)" '
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rm -rf tmp.git &&
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git -c protocol.$proto.allow=always clone --bare "$url" tmp.git
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'
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test_expect_success "fetch $desc (enabled)" '
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git -C tmp.git -c protocol.$proto.allow=always fetch
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'
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test_expect_success "push $desc (enabled)" '
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git -C tmp.git -c protocol.$proto.allow=always push origin HEAD:pushed
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'
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test_expect_success "push $desc (disabled)" '
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test_must_fail git -C tmp.git -c protocol.$proto.allow=never push origin HEAD:pushed
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'
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test_expect_success "fetch $desc (disabled)" '
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test_must_fail git -C tmp.git -c protocol.$proto.allow=never fetch
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'
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test_expect_success "clone $desc (disabled)" '
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rm -rf tmp.git &&
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test_must_fail git -c protocol.$proto.allow=never clone --bare "$url" tmp.git
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'
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# Test clone/fetch/push with protocol.user.allow and its env var
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test_expect_success "clone $desc (enabled)" '
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rm -rf tmp.git &&
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git -c protocol.$proto.allow=user clone --bare "$url" tmp.git
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'
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test_expect_success "fetch $desc (enabled)" '
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git -C tmp.git -c protocol.$proto.allow=user fetch
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'
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test_expect_success "push $desc (enabled)" '
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git -C tmp.git -c protocol.$proto.allow=user push origin HEAD:pushed
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'
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test_expect_success "push $desc (disabled)" '
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(
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cd tmp.git &&
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GIT_PROTOCOL_FROM_USER=0 &&
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export GIT_PROTOCOL_FROM_USER &&
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test_must_fail git -c protocol.$proto.allow=user push origin HEAD:pushed
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)
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'
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test_expect_success "fetch $desc (disabled)" '
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(
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cd tmp.git &&
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GIT_PROTOCOL_FROM_USER=0 &&
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export GIT_PROTOCOL_FROM_USER &&
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test_must_fail git -c protocol.$proto.allow=user fetch
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)
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'
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test_expect_success "clone $desc (disabled)" '
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rm -rf tmp.git &&
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(
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GIT_PROTOCOL_FROM_USER=0 &&
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export GIT_PROTOCOL_FROM_USER &&
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test_must_fail git -c protocol.$proto.allow=user clone --bare "$url" tmp.git
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)
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'
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# Test clone/fetch/push with protocol.allow user defined default
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test_expect_success "clone $desc (enabled)" '
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rm -rf tmp.git &&
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git config --global protocol.allow always &&
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git clone --bare "$url" tmp.git
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'
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test_expect_success "fetch $desc (enabled)" '
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git -C tmp.git fetch
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'
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test_expect_success "push $desc (enabled)" '
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git -C tmp.git push origin HEAD:pushed
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'
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test_expect_success "push $desc (disabled)" '
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git config --global protocol.allow never &&
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test_must_fail git -C tmp.git push origin HEAD:pushed
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'
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test_expect_success "fetch $desc (disabled)" '
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test_must_fail git -C tmp.git fetch
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'
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test_expect_success "clone $desc (disabled)" '
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rm -rf tmp.git &&
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test_must_fail git clone --bare "$url" tmp.git
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'
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}
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# test cloning a particular protocol
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# $1 - description of the protocol
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# $2 - machine-readable name of the protocol
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# $3 - the URL to try cloning
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test_proto () {
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test_whitelist "$@"
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test_config "$@"
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}
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# set up an ssh wrapper that will access $host/$repo in the
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# trash directory, and enable it for subsequent tests.
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setup_ssh_wrapper () {
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test_expect_success 'setup ssh wrapper' '
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write_script ssh-wrapper <<-\EOF &&
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echo >&2 "ssh: $*"
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host=$1; shift
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cd "$TRASH_DIRECTORY/$host" &&
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eval "$*"
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EOF
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GIT_SSH="$PWD/ssh-wrapper" &&
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export GIT_SSH &&
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export TRASH_DIRECTORY
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'
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}
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# set up a wrapper that can be used with remote-ext to
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# access repositories in the "remote" directory of trash-dir,
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# like "ext::fake-remote %S repo.git"
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setup_ext_wrapper () {
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test_expect_success 'setup ext wrapper' '
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write_script fake-remote <<-\EOF &&
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echo >&2 "fake-remote: $*"
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cd "$TRASH_DIRECTORY/remote" &&
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eval "$*"
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EOF
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PATH=$TRASH_DIRECTORY:$PATH &&
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export TRASH_DIRECTORY
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'
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}
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