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fast-import: disallow more path components

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Instead of just disallowing '.' and '..', make use of verify_path() to
ensure that fast-import will disallow anything we wouldn't allow into
the index, such as anything under .git/, .gitmodules as a symlink, or
a dos drive prefix on Windows.

Since a few fast-export and fast-import tests that tried to stress-test
the correct handling of quoting relied on filenames that fail
is_valid_win32_path(), such as spaces or periods at the end of filenames
or backslashes within the filename, turn off core.protectNTFS for those
tests to ensure they keep passing.

Helped-by: Jeff King <peff@peff.net>
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Elijah Newren
2024-11-30 01:09:29 +00:00
committed by Junio C Hamano
parent 4a2790a257
commit da91a90c2f
3 changed files with 91 additions and 7 deletions
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8
builtin/fast-import.c
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@@ -13,6 +13,7 @@
#include "delta.h"
#include "pack.h"
#include "path.h"
#include "read-cache-ll.h"
#include "refs.h"
#include "csum-file.h"
#include "quote.h"
@@ -1468,8 +1469,6 @@ static int tree_content_set(
root->tree = t = grow_tree_content(t, t->entry_count);
e = new_tree_entry();
e->name = to_atom(p, n);
if (is_dot_or_dotdot(e->name->str_dat))
die("path %s contains invalid component", p);
e->versions[0].mode = 0;
oidclr(&e->versions[0].oid, the_repository->hash_algo);
t->entries[t->entry_count++] = e;
@@ -2416,6 +2415,9 @@ static void file_change_m(const char *p, struct branch *b)
tree_content_replace(&b->branch_tree, &oid, mode, NULL);
return;
}
if (!verify_path(path.buf, mode))
die("invalid path '%s'", path.buf);
tree_content_set(&b->branch_tree, path.buf, &oid, mode, NULL);
}
@@ -2453,6 +2455,8 @@ static void file_change_cr(const char *p, struct branch *b, int rename)
leaf.tree);
return;
}
if (!verify_path(dest.buf, leaf.versions[1].mode))
die("invalid path '%s'", dest.buf);
tree_content_set(&b->branch_tree, dest.buf,
&leaf.versions[1].oid,
leaf.versions[1].mode,