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Check storage_key for validity (#2316)

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* Intro `ChildStorageKey` for checked child keys

* Get rid of Into in Externalities trait

* Use Cow in ChildStorageKey

* Fix tests for state-machine.

* Clean

* child_storage_root always return a value

* Don't return Option from Ext::child_storage_root

* Return 42 in child_storage_root

* Return CHILD_STORAGE_KEY_PREFIX from trie id gen

* Bump spec and impl version.

* Require `:default:` in `is_child_trie_key_valid`

* Add `default:` prefix.

* Introduce `into_owned` for `ChildStorageKey`.

* Add documentation.

* Fix state-machine tests

* Remove outdated TODO

I check out with Emeric and he is ok with that

* child_storage_root is infailable

* Nit

* Move assert after check.

* Apply suggestions from @DemiMarie-parity

Co-Authored-By: pepyakin <s.pepyakin@gmail.com>

* Formatting nit in core/executor/src/wasm_executor.rs

Co-Authored-By: DemiMarie-parity <48690212+DemiMarie-parity@users.noreply.github.com>

* Formatting nits from @thiolliere
This commit is contained in:
Sergei Pepyakin
2019-04-23 18:14:45 +02:00
committed by GitHub
parent 648dcc2728
commit 517746bd62
12 changed files with 286 additions and 123 deletions
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substrate/core/sr-io/without_std.rs
+10 -10
View File
@@ -475,18 +475,18 @@ pub fn storage_root() -> [u8; 32] {
}
/// "Commit" all existing operations and compute the resultant child storage root.
pub fn child_storage_root(storage_key: &[u8]) -> Option<Vec<u8>> {
pub fn child_storage_root(storage_key: &[u8]) -> Vec<u8> {
let mut length: u32 = 0;
unsafe {
let ptr = ext_child_storage_root.get()(storage_key.as_ptr(), storage_key.len() as u32, &mut length);
if length == u32::max_value() {
None
} else {
// Invariants required by Vec::from_raw_parts are not formally fulfilled.
// We don't allocate via String/Vec<T>, but use a custom allocator instead.
// See #300 for more details.
Some(<Vec<u8>>::from_raw_parts(ptr, length as usize, length as usize))
}
let ptr = ext_child_storage_root.get()(
storage_key.as_ptr(),
storage_key.len() as u32,
&mut length
);
// Invariants required by Vec::from_raw_parts are not formally fulfilled.
// We don't allocate via String/Vec<T>, but use a custom allocator instead.
// See #300 for more details.
<Vec<u8>>::from_raw_parts(ptr, length as usize, length as usize)
}
}