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git/t/lib-proto-disable.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>
2015-09-16 17:12:52 +00:00
# Test routines for checking protocol disabling.
t: avoid "whitelist" The word "whitelist" has cultural implications that are not inclusive. Thankfully, it is not difficult to reword and avoid its use. Focus on changes in the test scripts, since most of the changes are in comments and test names. The renamed test_allow_var helper is only used once inside the widely-used test_proto helper. Signed-off-by: Derrick Stolee <derrickstolee@github.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-07-19 18:32:16 +00:00
# Test clone/fetch/push with GIT_ALLOW_PROTOCOL environment variable
test_allow_var () {
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>
2015-09-16 17:12:52 +00:00
desc=$1
proto=$2
url=$3
lib-proto-disable: variable name fix The test_proto function assigns the positional parameters to named variables, but then still refers to "$desc" as "$1". Using $desc is more readable and less error-prone. Signed-off-by: Brandon Williams <bmwill@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-14 22:39:50 +00:00
test_expect_success "clone $desc (enabled)" '
transport: add a protocol-whitelist environment variable If we are cloning an untrusted remote repository into a sandbox, we may also want to fetch remote submodules in order to get the complete view as intended by the other side. However, that opens us up to attacks where a malicious user gets us to clone something they would not otherwise have access to (this is not necessarily a problem by itself, but we may then act on the cloned contents in a way that exposes them to the attacker). Ideally such a setup would sandbox git entirely away from high-value items, but this is not always practical or easy to set up (e.g., OS network controls may block multiple protocols, and we would want to enable some but not others). We can help this case by providing a way to restrict particular protocols. We use a whitelist in the environment. This is more annoying to set up than a blacklist, but defaults to safety if the set of protocols git supports grows). If no whitelist is specified, we continue to default to allowing all protocols (this is an "unsafe" default, but since the minority of users will want this sandboxing effect, it is the only sensible one). A note on the tests: ideally these would all be in a single test file, but the git-daemon and httpd test infrastructure is an all-or-nothing proposition rather than a test-by-test prerequisite. By putting them all together, we would be unable to test the file-local code on machines without apache. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-09-16 17:12:52 +00:00
rm -rf tmp.git &&
(
GIT_ALLOW_PROTOCOL=$proto &&
export GIT_ALLOW_PROTOCOL &&
git clone --bare "$url" tmp.git
)
'
lib-proto-disable: variable name fix The test_proto function assigns the positional parameters to named variables, but then still refers to "$desc" as "$1". Using $desc is more readable and less error-prone. Signed-off-by: Brandon Williams <bmwill@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-14 22:39:50 +00:00
test_expect_success "fetch $desc (enabled)" '
transport: add a protocol-whitelist environment variable If we are cloning an untrusted remote repository into a sandbox, we may also want to fetch remote submodules in order to get the complete view as intended by the other side. However, that opens us up to attacks where a malicious user gets us to clone something they would not otherwise have access to (this is not necessarily a problem by itself, but we may then act on the cloned contents in a way that exposes them to the attacker). Ideally such a setup would sandbox git entirely away from high-value items, but this is not always practical or easy to set up (e.g., OS network controls may block multiple protocols, and we would want to enable some but not others). We can help this case by providing a way to restrict particular protocols. We use a whitelist in the environment. This is more annoying to set up than a blacklist, but defaults to safety if the set of protocols git supports grows). If no whitelist is specified, we continue to default to allowing all protocols (this is an "unsafe" default, but since the minority of users will want this sandboxing effect, it is the only sensible one). A note on the tests: ideally these would all be in a single test file, but the git-daemon and httpd test infrastructure is an all-or-nothing proposition rather than a test-by-test prerequisite. By putting them all together, we would be unable to test the file-local code on machines without apache. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-09-16 17:12:52 +00:00
(
cd tmp.git &&
GIT_ALLOW_PROTOCOL=$proto &&
export GIT_ALLOW_PROTOCOL &&
git fetch
)
'
lib-proto-disable: variable name fix The test_proto function assigns the positional parameters to named variables, but then still refers to "$desc" as "$1". Using $desc is more readable and less error-prone. Signed-off-by: Brandon Williams <bmwill@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-14 22:39:50 +00:00
test_expect_success "push $desc (enabled)" '
transport: add a protocol-whitelist environment variable If we are cloning an untrusted remote repository into a sandbox, we may also want to fetch remote submodules in order to get the complete view as intended by the other side. However, that opens us up to attacks where a malicious user gets us to clone something they would not otherwise have access to (this is not necessarily a problem by itself, but we may then act on the cloned contents in a way that exposes them to the attacker). Ideally such a setup would sandbox git entirely away from high-value items, but this is not always practical or easy to set up (e.g., OS network controls may block multiple protocols, and we would want to enable some but not others). We can help this case by providing a way to restrict particular protocols. We use a whitelist in the environment. This is more annoying to set up than a blacklist, but defaults to safety if the set of protocols git supports grows). If no whitelist is specified, we continue to default to allowing all protocols (this is an "unsafe" default, but since the minority of users will want this sandboxing effect, it is the only sensible one). A note on the tests: ideally these would all be in a single test file, but the git-daemon and httpd test infrastructure is an all-or-nothing proposition rather than a test-by-test prerequisite. By putting them all together, we would be unable to test the file-local code on machines without apache. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-09-16 17:12:52 +00:00
(
cd tmp.git &&
GIT_ALLOW_PROTOCOL=$proto &&
export GIT_ALLOW_PROTOCOL &&
git push origin HEAD:pushed
)
'
lib-proto-disable: variable name fix The test_proto function assigns the positional parameters to named variables, but then still refers to "$desc" as "$1". Using $desc is more readable and less error-prone. Signed-off-by: Brandon Williams <bmwill@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-14 22:39:50 +00:00
test_expect_success "push $desc (disabled)" '
transport: add a protocol-whitelist environment variable If we are cloning an untrusted remote repository into a sandbox, we may also want to fetch remote submodules in order to get the complete view as intended by the other side. However, that opens us up to attacks where a malicious user gets us to clone something they would not otherwise have access to (this is not necessarily a problem by itself, but we may then act on the cloned contents in a way that exposes them to the attacker). Ideally such a setup would sandbox git entirely away from high-value items, but this is not always practical or easy to set up (e.g., OS network controls may block multiple protocols, and we would want to enable some but not others). We can help this case by providing a way to restrict particular protocols. We use a whitelist in the environment. This is more annoying to set up than a blacklist, but defaults to safety if the set of protocols git supports grows). If no whitelist is specified, we continue to default to allowing all protocols (this is an "unsafe" default, but since the minority of users will want this sandboxing effect, it is the only sensible one). A note on the tests: ideally these would all be in a single test file, but the git-daemon and httpd test infrastructure is an all-or-nothing proposition rather than a test-by-test prerequisite. By putting them all together, we would be unable to test the file-local code on machines without apache. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-09-16 17:12:52 +00:00
(
cd tmp.git &&
GIT_ALLOW_PROTOCOL=none &&
export GIT_ALLOW_PROTOCOL &&
test_must_fail git push origin HEAD:pushed
)
'
lib-proto-disable: variable name fix The test_proto function assigns the positional parameters to named variables, but then still refers to "$desc" as "$1". Using $desc is more readable and less error-prone. Signed-off-by: Brandon Williams <bmwill@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-14 22:39:50 +00:00
test_expect_success "fetch $desc (disabled)" '
transport: add a protocol-whitelist environment variable If we are cloning an untrusted remote repository into a sandbox, we may also want to fetch remote submodules in order to get the complete view as intended by the other side. However, that opens us up to attacks where a malicious user gets us to clone something they would not otherwise have access to (this is not necessarily a problem by itself, but we may then act on the cloned contents in a way that exposes them to the attacker). Ideally such a setup would sandbox git entirely away from high-value items, but this is not always practical or easy to set up (e.g., OS network controls may block multiple protocols, and we would want to enable some but not others). We can help this case by providing a way to restrict particular protocols. We use a whitelist in the environment. This is more annoying to set up than a blacklist, but defaults to safety if the set of protocols git supports grows). If no whitelist is specified, we continue to default to allowing all protocols (this is an "unsafe" default, but since the minority of users will want this sandboxing effect, it is the only sensible one). A note on the tests: ideally these would all be in a single test file, but the git-daemon and httpd test infrastructure is an all-or-nothing proposition rather than a test-by-test prerequisite. By putting them all together, we would be unable to test the file-local code on machines without apache. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-09-16 17:12:52 +00:00
(
cd tmp.git &&
GIT_ALLOW_PROTOCOL=none &&
export GIT_ALLOW_PROTOCOL &&
test_must_fail git fetch
)
'
lib-proto-disable: variable name fix The test_proto function assigns the positional parameters to named variables, but then still refers to "$desc" as "$1". Using $desc is more readable and less error-prone. Signed-off-by: Brandon Williams <bmwill@google.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2016-12-14 22:39:50 +00:00
test_expect_success "clone $desc (disabled)" '
transport: add a protocol-whitelist environment variable If we are cloning an untrusted remote repository into a sandbox, we may also want to fetch remote submodules in order to get the complete view as intended by the other side. However, that opens us up to attacks where a malicious user gets us to clone something they would not otherwise have access to (this is not necessarily a problem by itself, but we may then act on the cloned contents in a way that exposes them to the attacker). Ideally such a setup would sandbox git entirely away from high-value items, but this is not always practical or easy to set up (e.g., OS network controls may block multiple protocols, and we would want to enable some but not others). We can help this case by providing a way to restrict particular protocols. We use a whitelist in the environment. This is more annoying to set up than a blacklist, but defaults to safety if the set of protocols git supports grows). If no whitelist is specified, we continue to default to allowing all protocols (this is an "unsafe" default, but since the minority of users will want this sandboxing effect, it is the only sensible one). A note on the tests: ideally these would all be in a single test file, but the git-daemon and httpd test infrastructure is an all-or-nothing proposition rather than a test-by-test prerequisite. By putting them all together, we would be unable to test the file-local code on machines without apache. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-09-16 17:12:52 +00:00
rm -rf tmp.git &&
(
GIT_ALLOW_PROTOCOL=none &&
export GIT_ALLOW_PROTOCOL &&
test_must_fail git clone --bare "$url" tmp.git
)
'
transport: add protocol policy config option 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>
2016-12-14 22:39:52 +00:00
test_expect_success "clone $desc (env var has precedence)" '
rm -rf tmp.git &&
(
GIT_ALLOW_PROTOCOL=none &&
export GIT_ALLOW_PROTOCOL &&
test_must_fail git -c protocol.allow=always clone --bare "$url" tmp.git &&
test_must_fail git -c protocol.$proto.allow=always clone --bare "$url" tmp.git
)
'
}
test_config () {
desc=$1
proto=$2
url=$3
# Test clone/fetch/push with protocol.<type>.allow config
test_expect_success "clone $desc (enabled with config)" '
rm -rf tmp.git &&
git -c protocol.$proto.allow=always clone --bare "$url" tmp.git
'
test_expect_success "fetch $desc (enabled)" '
git -C tmp.git -c protocol.$proto.allow=always fetch
'
test_expect_success "push $desc (enabled)" '
git -C tmp.git -c protocol.$proto.allow=always push origin HEAD:pushed
'
test_expect_success "push $desc (disabled)" '
test_must_fail git -C tmp.git -c protocol.$proto.allow=never push origin HEAD:pushed
'
test_expect_success "fetch $desc (disabled)" '
test_must_fail git -C tmp.git -c protocol.$proto.allow=never fetch
'
test_expect_success "clone $desc (disabled)" '
rm -rf tmp.git &&
test_must_fail git -c protocol.$proto.allow=never clone --bare "$url" tmp.git
'
# Test clone/fetch/push with protocol.user.allow and its env var
test_expect_success "clone $desc (enabled)" '
rm -rf tmp.git &&
git -c protocol.$proto.allow=user clone --bare "$url" tmp.git
'
test_expect_success "fetch $desc (enabled)" '
git -C tmp.git -c protocol.$proto.allow=user fetch
'
test_expect_success "push $desc (enabled)" '
git -C tmp.git -c protocol.$proto.allow=user push origin HEAD:pushed
'
test_expect_success "push $desc (disabled)" '
(
cd tmp.git &&
GIT_PROTOCOL_FROM_USER=0 &&
export GIT_PROTOCOL_FROM_USER &&
test_must_fail git -c protocol.$proto.allow=user push origin HEAD:pushed
)
'
test_expect_success "fetch $desc (disabled)" '
(
cd tmp.git &&
GIT_PROTOCOL_FROM_USER=0 &&
export GIT_PROTOCOL_FROM_USER &&
test_must_fail git -c protocol.$proto.allow=user fetch
)
'
test_expect_success "clone $desc (disabled)" '
rm -rf tmp.git &&
(
GIT_PROTOCOL_FROM_USER=0 &&
export GIT_PROTOCOL_FROM_USER &&
test_must_fail git -c protocol.$proto.allow=user clone --bare "$url" tmp.git
)
'
# Test clone/fetch/push with protocol.allow user defined default
test_expect_success "clone $desc (enabled)" '
rm -rf tmp.git &&
t/lib-proto-disable: restore protocol.allow after config tests The tests for protocol.allow actually set that variable in the on-disk config, run a series of tests, and then never clean up after themselves. This means that whatever tests we run after have protocol.allow=never, which may influence their results. In most cases we either exit after running these tests, or do another round of test_proto(). In the latter case, this happens to work because: 1. Tests of the GIT_ALLOW_PROTOCOL environment variable override the config. 2. Tests of the specific config "protocol.foo.allow" override the protocol.allow config. 3. The next round of protocol.allow tests start off by setting the config to a known value. However, it's a land-mine waiting to trap somebody adding new tests to one of the t581x test scripts. Let's make sure we clean up after ourselves. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-07-28 21:47:48 +00:00
test_config_global protocol.allow always &&
transport: add protocol policy config option 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>
2016-12-14 22:39:52 +00:00
git clone --bare "$url" tmp.git
'
test_expect_success "fetch $desc (enabled)" '
t/lib-proto-disable: restore protocol.allow after config tests The tests for protocol.allow actually set that variable in the on-disk config, run a series of tests, and then never clean up after themselves. This means that whatever tests we run after have protocol.allow=never, which may influence their results. In most cases we either exit after running these tests, or do another round of test_proto(). In the latter case, this happens to work because: 1. Tests of the GIT_ALLOW_PROTOCOL environment variable override the config. 2. Tests of the specific config "protocol.foo.allow" override the protocol.allow config. 3. The next round of protocol.allow tests start off by setting the config to a known value. However, it's a land-mine waiting to trap somebody adding new tests to one of the t581x test scripts. Let's make sure we clean up after ourselves. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-07-28 21:47:48 +00:00
test_config_global protocol.allow always &&
transport: add protocol policy config option 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>
2016-12-14 22:39:52 +00:00
git -C tmp.git fetch
'
test_expect_success "push $desc (enabled)" '
t/lib-proto-disable: restore protocol.allow after config tests The tests for protocol.allow actually set that variable in the on-disk config, run a series of tests, and then never clean up after themselves. This means that whatever tests we run after have protocol.allow=never, which may influence their results. In most cases we either exit after running these tests, or do another round of test_proto(). In the latter case, this happens to work because: 1. Tests of the GIT_ALLOW_PROTOCOL environment variable override the config. 2. Tests of the specific config "protocol.foo.allow" override the protocol.allow config. 3. The next round of protocol.allow tests start off by setting the config to a known value. However, it's a land-mine waiting to trap somebody adding new tests to one of the t581x test scripts. Let's make sure we clean up after ourselves. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-07-28 21:47:48 +00:00
test_config_global protocol.allow always &&
transport: add protocol policy config option 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>
2016-12-14 22:39:52 +00:00
git -C tmp.git push origin HEAD:pushed
'
test_expect_success "push $desc (disabled)" '
t/lib-proto-disable: restore protocol.allow after config tests The tests for protocol.allow actually set that variable in the on-disk config, run a series of tests, and then never clean up after themselves. This means that whatever tests we run after have protocol.allow=never, which may influence their results. In most cases we either exit after running these tests, or do another round of test_proto(). In the latter case, this happens to work because: 1. Tests of the GIT_ALLOW_PROTOCOL environment variable override the config. 2. Tests of the specific config "protocol.foo.allow" override the protocol.allow config. 3. The next round of protocol.allow tests start off by setting the config to a known value. However, it's a land-mine waiting to trap somebody adding new tests to one of the t581x test scripts. Let's make sure we clean up after ourselves. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-07-28 21:47:48 +00:00
test_config_global protocol.allow never &&
transport: add protocol policy config option 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>
2016-12-14 22:39:52 +00:00
test_must_fail git -C tmp.git push origin HEAD:pushed
'
test_expect_success "fetch $desc (disabled)" '
t/lib-proto-disable: restore protocol.allow after config tests The tests for protocol.allow actually set that variable in the on-disk config, run a series of tests, and then never clean up after themselves. This means that whatever tests we run after have protocol.allow=never, which may influence their results. In most cases we either exit after running these tests, or do another round of test_proto(). In the latter case, this happens to work because: 1. Tests of the GIT_ALLOW_PROTOCOL environment variable override the config. 2. Tests of the specific config "protocol.foo.allow" override the protocol.allow config. 3. The next round of protocol.allow tests start off by setting the config to a known value. However, it's a land-mine waiting to trap somebody adding new tests to one of the t581x test scripts. Let's make sure we clean up after ourselves. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-07-28 21:47:48 +00:00
test_config_global protocol.allow never &&
transport: add protocol policy config option 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>
2016-12-14 22:39:52 +00:00
test_must_fail git -C tmp.git fetch
'
test_expect_success "clone $desc (disabled)" '
rm -rf tmp.git &&
t/lib-proto-disable: restore protocol.allow after config tests The tests for protocol.allow actually set that variable in the on-disk config, run a series of tests, and then never clean up after themselves. This means that whatever tests we run after have protocol.allow=never, which may influence their results. In most cases we either exit after running these tests, or do another round of test_proto(). In the latter case, this happens to work because: 1. Tests of the GIT_ALLOW_PROTOCOL environment variable override the config. 2. Tests of the specific config "protocol.foo.allow" override the protocol.allow config. 3. The next round of protocol.allow tests start off by setting the config to a known value. However, it's a land-mine waiting to trap somebody adding new tests to one of the t581x test scripts. Let's make sure we clean up after ourselves. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2017-07-28 21:47:48 +00:00
test_config_global protocol.allow never &&
transport: add protocol policy config option 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>
2016-12-14 22:39:52 +00:00
test_must_fail git clone --bare "$url" tmp.git
'
}
# test cloning a particular protocol
# $1 - description of the protocol
# $2 - machine-readable name of the protocol
# $3 - the URL to try cloning
test_proto () {
t: avoid "whitelist" The word "whitelist" has cultural implications that are not inclusive. Thankfully, it is not difficult to reword and avoid its use. Focus on changes in the test scripts, since most of the changes are in comments and test names. The renamed test_allow_var helper is only used once inside the widely-used test_proto helper. Signed-off-by: Derrick Stolee <derrickstolee@github.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-07-19 18:32:16 +00:00
test_allow_var "$@"
transport: add protocol policy config option 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>
2016-12-14 22:39:52 +00:00
test_config "$@"
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>
2015-09-16 17:12:52 +00:00
}
# set up an ssh wrapper that will access $host/$repo in the
# trash directory, and enable it for subsequent tests.
setup_ssh_wrapper () {
test_expect_success 'setup ssh wrapper' '
write_script ssh-wrapper <<-\EOF &&
echo >&2 "ssh: $*"
host=$1; shift
cd "$TRASH_DIRECTORY/$host" &&
eval "$*"
EOF
GIT_SSH="$PWD/ssh-wrapper" &&
export GIT_SSH &&
export TRASH_DIRECTORY
'
}
# set up a wrapper that can be used with remote-ext to
# access repositories in the "remote" directory of trash-dir,
# like "ext::fake-remote %S repo.git"
setup_ext_wrapper () {
test_expect_success 'setup ext wrapper' '
write_script fake-remote <<-\EOF &&
echo >&2 "fake-remote: $*"
cd "$TRASH_DIRECTORY/remote" &&
eval "$*"
EOF
PATH=$TRASH_DIRECTORY:$PATH &&
export TRASH_DIRECTORY
'
}
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