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Diffstat (limited to 'Documentation/git-upload-archive.txt')
| -rw-r--r-- | Documentation/git-upload-archive.txt | 34 |
1 files changed, 33 insertions, 1 deletions
diff --git a/Documentation/git-upload-archive.txt b/Documentation/git-upload-archive.txt index d09bbb52b1..fba0f1c1b2 100644 --- a/Documentation/git-upload-archive.txt +++ b/Documentation/git-upload-archive.txt @@ -1,5 +1,5 @@ git-upload-archive(1) -==================== +===================== NAME ---- @@ -20,6 +20,38 @@ This command is usually not invoked directly by the end user. The UI for the protocol is on the 'git archive' side, and the program pair is meant to be used to get an archive from a remote repository. +SECURITY +-------- + +In order to protect the privacy of objects that have been removed from +history but may not yet have been pruned, `git-upload-archive` avoids +serving archives for commits and trees that are not reachable from the +repository's refs. However, because calculating object reachability is +computationally expensive, `git-upload-archive` implements a stricter +but easier-to-check set of rules: + + 1. Clients may request a commit or tree that is pointed to directly by + a ref. E.g., `git archive --remote=origin v1.0`. + + 2. Clients may request a sub-tree within a commit or tree using the + `ref:path` syntax. E.g., `git archive --remote=origin v1.0:Documentation`. + + 3. Clients may _not_ use other sha1 expressions, even if the end + result is reachable. E.g., neither a relative commit like `master^` + nor a literal sha1 like `abcd1234` is allowed, even if the result + is reachable from the refs. + +Note that rule 3 disallows many cases that do not have any privacy +implications. These rules are subject to change in future versions of +git, and the server accessed by `git archive --remote` may or may not +follow these exact rules. + +If the config option `uploadArchive.allowUnreachable` is true, these +rules are ignored, and clients may use arbitrary sha1 expressions. +This is useful if you do not care about the privacy of unreachable +objects, or if your object database is already publicly available for +access via non-smart-http. + OPTIONS ------- <directory>:: |