From: Glen Choo <chooglen@google.com>
To: Junio C Hamano <gitster@pobox.com>
Cc: git@vger.kernel.org, Emily Shaffer <emilyshaffer@google.com>,
justin@justinsteven.com, Taylor Blau <me@ttaylorr.com>,
martinvonz@google.com,
"brian m. carlson" <sandals@crustytoothpaste.net>
Subject: Re: Bare repositories in the working tree are a security risk
Date: Fri, 15 Apr 2022 14:33:21 -0700 [thread overview]
Message-ID: <kl6lbkx2821q.fsf@chooglen-macbookpro.roam.corp.google.com> (raw)
In-Reply-To: <xmqqbkx31sc0.fsf@gitster.g>
Junio C Hamano <gitster@pobox.com> writes:
> Glen Choo <chooglen@google.com> writes:
>
>> Yes, I mean that even the current directory will be ignored when
>> discovery is disabled.
>
> OK.
>
>>> I am not sure that
>>> is realistically feasible (I am thinking of cases like "git fetch"
>>> going to the remote repository on the local disk that is bare to run
>>> "git upload-pack"), but if the fallout is not too bad, it may be a
>>> good heuristics.
>>
>> Good detail - I hadn't considered the impact on our own child processes.
>> I suspect this might be a huge undertaking. Unless there is significant
>> interest in this option, I probably won't pursue it further.
>
> I do not necessarily think so. The entry points to transport on the
> server side are quite limited (and the client side is dealing with
> your own repositories anyway), and they already know which directory
> in the server filesystem to hand to the upload-pack and friends, so
> it would be a matter of passing GIT_DIR=$there when they call into the
> run_command() API, if they are not already doing so.
FWIW I experimented with turning off bare repo recognition altogether
and seeing what breaks.
CI Run: https://github.com/chooglen/git/runs/6042600953?check_suite_focus=true
AFAICT, most of the test failures are what we'd expect if we stopped
recognizing bare repos altogether. One stands out to me in particular
though - in t5550-http-fetch-dumb.sh,
git clone $HTTPD_URL/dumb/repo.git clone-tmpl
yields
++ git clone http://127.0.0.1:5550/dumb/repo.git clone-tmpl
Cloning into 'clone-tmpl'...
fatal: repository 'http://127.0.0.1:5550/dumb/repo.git/' not found
This sounds to me like Git isn't recognizing the static http files as a
remote Git repo, and if so, --git-dir doesn't sound like it'll save us.
But I'm not that familiar with the transport code so I don't know if
this is a big deal or just a quirk with our httpd tests.
----- >8 --------- >8 --------- >8 --------- >8 --------- >8 ----
diff --git a/setup.c b/setup.c
index 2600548776..794d9624d5 100644
--- a/setup.c
+++ b/setup.c
@@ -1196,10 +1196,10 @@ static enum discovery_result setup_git_directory_gently_1(struct strbuf *dir,
return GIT_DIR_DISCOVERED;
}
- if (is_git_directory(dir->buf)) {
- strbuf_addstr(gitdir, ".");
- return GIT_DIR_BARE;
- }
+ /* if (is_git_directory(dir->buf)) { */
+ /* strbuf_addstr(gitdir, "."); */
+ /* return GIT_DIR_BARE; */
+ /* } */
if (offset <= min_offset)
return GIT_DIR_HIT_CEILING;
next prev parent reply other threads:[~2022-04-15 21:33 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-04-06 22:43 Bare repositories in the working tree are a security risk Glen Choo
2022-04-06 23:22 ` [PATCH] fsck: detect bare repos in trees and warn Glen Choo
2022-04-07 12:42 ` Johannes Schindelin
2022-04-07 13:21 ` Derrick Stolee
2022-04-07 14:14 ` Ævar Arnfjörð Bjarmason
2022-04-14 20:02 ` Glen Choo
2022-04-15 12:46 ` Ævar Arnfjörð Bjarmason
2022-04-07 15:11 ` Junio C Hamano
2022-04-13 22:24 ` Glen Choo
2022-04-07 13:12 ` Ævar Arnfjörð Bjarmason
2022-04-07 15:20 ` Junio C Hamano
2022-04-07 18:38 ` Bare repositories in the working tree are a security risk John Cai
2022-04-07 21:24 ` brian m. carlson
2022-04-07 21:53 ` Justin Steven
2022-04-07 22:10 ` brian m. carlson
2022-04-07 22:40 ` rsbecker
2022-04-08 5:54 ` Junio C Hamano
2022-04-14 0:03 ` Junio C Hamano
2022-04-14 0:04 ` Glen Choo
2022-04-13 23:44 ` Glen Choo
2022-04-13 20:37 ` Glen Choo
2022-04-13 23:36 ` Junio C Hamano
2022-04-14 16:41 ` Glen Choo
2022-04-14 17:35 ` Junio C Hamano
2022-04-14 18:19 ` Junio C Hamano
2022-04-15 21:33 ` Glen Choo [this message]
2022-04-15 22:17 ` Junio C Hamano
2022-04-16 0:52 ` Taylor Blau
2022-04-15 22:43 ` Glen Choo
2022-04-15 20:13 ` Junio C Hamano
2022-04-15 23:45 ` Glen Choo
2022-04-15 23:59 ` Glen Choo
2022-04-16 1:00 ` Taylor Blau
2022-04-16 1:18 ` Junio C Hamano
2022-04-16 1:30 ` Taylor Blau
2022-04-16 0:34 ` Glen Choo
2022-04-16 0:41 ` Glen Choo
2022-04-16 1:28 ` Taylor Blau
2022-04-21 18:25 ` Emily Shaffer
2022-04-21 18:29 ` Emily Shaffer
2022-04-21 18:47 ` Junio C Hamano
2022-04-21 18:54 ` Taylor Blau
2022-04-21 19:09 ` Taylor Blau
2022-04-21 21:01 ` Emily Shaffer
2022-04-21 21:22 ` Taylor Blau
2022-04-29 23:57 ` Glen Choo
2022-04-30 1:14 ` Taylor Blau
2022-05-02 19:39 ` Glen Choo
2022-05-02 14:05 ` Philip Oakley
2022-05-02 18:50 ` Junio C Hamano
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