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![Jeff King](/assets/img/avatar_default.png)
As with urls, submodule paths with dashes are ignored by git, but may end up confusing older versions. Detecting them via fsck lets us prevent modern versions of git from being a vector to spread broken .gitmodules to older versions. Compared to blocking leading-dash urls, though, this detection may be less of a good idea: 1. While such paths provide confusing and broken results, they don't seem to actually work as option injections against anything except "cd". In particular, the submodule code seems to canonicalize to an absolute path before running "git clone" (so it passes /your/clone/-sub). 2. It's more likely that we may one day make such names actually work correctly. Even after we revert this fsck check, it will continue to be a hassle until hosting servers are all updated. On the other hand, it's not entirely clear that the behavior in older versions is safe. And if we do want to eventually allow this, we may end up doing so with a special syntax anyway (e.g., writing "./-sub" in the .gitmodules file, and teaching the submodule code to canonicalize it when comparing). So on balance, this is probably a good protection. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
29 lines
720 B
Bash
Executable file
29 lines
720 B
Bash
Executable file
#!/bin/sh
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test_description='check handling of .gitmodule path with dash'
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. ./test-lib.sh
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test_expect_success 'create submodule with dash in path' '
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git init upstream &&
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git -C upstream commit --allow-empty -m base &&
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git submodule add ./upstream sub &&
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git mv sub ./-sub &&
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git commit -m submodule
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'
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test_expect_success 'clone rejects unprotected dash' '
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test_when_finished "rm -rf dst" &&
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git clone --recurse-submodules . dst 2>err &&
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test_i18ngrep ignoring err
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'
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test_expect_success 'fsck rejects unprotected dash' '
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test_when_finished "rm -rf dst" &&
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git init --bare dst &&
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git -C dst config transfer.fsckObjects true &&
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test_must_fail git push dst HEAD 2>err &&
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grep gitmodulesPath err
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'
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test_done
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