On Thu, Feb 9, 2017 at 5:56 PM, Jonathan Nieder <jrnieder@xxxxxxxxx> wrote:
> Private reply because using HTML mail on phone:
So I presume putting it back on the list is fine.
> Does this need to be a remote helper capability?
No, as all other capabilities of the git-protocol are mapped 1:1 to
the transport helper protocol for support, e.g. each transport helper
has to handle this on its own, c.f. remote-curl.c:set_option
(line 39 ff and 1065),
> What happens with remote
> helpers that don't understand the option?
The helper ought to print "unsupported"
(remote-curl.c:1065 for the http helper) and then the transport helper
will take care of it (transport-helper.c: 265 and e.g. 820)
>
> How do remote helpers communicate whether the server has said it accepts
> push options?
I guess the remote helper would communicate it the same way as communicating
if the push succeeded? (i.e. reject non fast forward.)
>
> On Wed, Feb 8, 2017, 14:04 Stefan Beller <sbeller@xxxxxxxxxx> wrote:
>>
>> When using non-builtin protocols relying on a transport helper
>> (such as http), push options are not propagated to the helper.
>>
>> The user could ask for push options and a push would seemingly succeed,
>> but the push options would never be transported to the server,
>> misleading the users expectation.
>>
>> Fix this by propagating the push options to the transport helper.
>>
>> This is only addressing the first issue of
>> (1) the helper protocol does not propagate push-option
>> (2) the http helper is not prepared to handle push-option
>>
>> Once we fix (2), the http transport helper can make use of push options
>> as well, but that happens as a follow up. (1) is a bug fix, whereas (2)
>> is a feature, which is why we only do (1) here.
>>
>> Signed-off-by: Stefan Beller <sbeller@xxxxxxxxxx>
>> ---
>> Documentation/gitremote-helpers.txt | 4 ++++
>> t/t5545-push-options.sh | 15 +++++++++++++++
>> transport-helper.c | 7 +++++++
>> 3 files changed, 26 insertions(+)
>>
>> diff --git a/Documentation/gitremote-helpers.txt
>> b/Documentation/gitremote-helpers.txt
>> index 9e8681f9e1..23474b1eab 100644
>> --- a/Documentation/gitremote-helpers.txt
>> +++ b/Documentation/gitremote-helpers.txt
>> @@ -462,6 +462,10 @@ set by Git if the remote helper has the 'option'
>> capability.
>> 'option pushcert {'true'|'false'}::
>> GPG sign pushes.
>>
>> +'option push-option <string>::
>> + Transmit <string> as a push option. As the a push option
>> + must not contain LF or NUL characters, the string is not encoded.
>> +
>> SEE ALSO
>> --------
>> linkgit:git-remote[1]
>> diff --git a/t/t5545-push-options.sh b/t/t5545-push-options.sh
>> index ea813b9383..9a57a7d8f2 100755
>> --- a/t/t5545-push-options.sh
>> +++ b/t/t5545-push-options.sh
>> @@ -3,6 +3,8 @@
>> test_description='pushing to a repository using push options'
>>
>> . ./test-lib.sh
>> +. "$TEST_DIRECTORY"/lib-httpd.sh
>> +start_httpd
>>
>> mk_repo_pair () {
>> rm -rf workbench upstream &&
>> @@ -100,4 +102,17 @@ test_expect_success 'two push options work' '
>> test_cmp expect upstream/.git/hooks/post-receive.push_options
>> '
>>
>> +test_expect_success 'push option denied properly by http remote helper'
>> '\
>> + mk_repo_pair &&
>> + git -C upstream config receive.advertisePushOptions false &&
>> + git -C upstream config http.receivepack true &&
>> + cp -R upstream/.git "$HTTPD_DOCUMENT_ROOT_PATH"/upstream.git &&
>> + git clone "$HTTPD_URL"/smart/upstream test_http_clone &&
>> + test_commit -C test_http_clone one &&
>> + test_must_fail git -C test_http_clone push --push-option=asdf
>> origin master &&
>> + git -C test_http_clone push origin master
>> +'
>> +
>> +stop_httpd
>> +
>> test_done
>> diff --git a/transport-helper.c b/transport-helper.c
>> index 91aed35ebb..1258d6aedd 100644
>> --- a/transport-helper.c
>> +++ b/transport-helper.c
>> @@ -826,6 +826,13 @@ static void set_common_push_options(struct transport
>> *transport,
>> if (set_helper_option(transport, TRANS_OPT_PUSH_CERT,
>> "if-asked") != 0)
>> die("helper %s does not support
>> --signed=if-asked", name);
>> }
>> +
>> + if (flags & TRANSPORT_PUSH_OPTIONS) {
>> + struct string_list_item *item;
>> + for_each_string_list_item(item, transport->push_options)
>> + if (set_helper_option(transport, "push-option",
>> item->string) != 0)
>> + die("helper %s does not support
>> 'push-option'", name);
>> + }
>> }
>>
>> static int push_refs_with_push(struct transport *transport,
>> --
>> 2.12.0.rc0.1.g018cb5e6f4
>>
>