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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* Remove outdated TODO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
Download Patch File Download Diff File Expand all files Collapse all files
substrate/core/state-machine/src/basic.rs
+6 -7
View File
@@ -23,7 +23,7 @@ use heapsize::HeapSizeOf;
use trie::trie_root;
use primitives::storage::well_known_keys::{CHANGES_TRIE_CONFIG, CODE, HEAP_PAGES};
use parity_codec::Encode;
use super::{Externalities, OverlayedChanges};
use super::{ChildStorageKey, Externalities, OverlayedChanges};
use log::warn;
/// Simple HashMap-based Externalities impl.
@@ -115,7 +115,7 @@ impl<H: Hasher> Externalities<H> for BasicExternalities where H::Out: Ord + Heap
Externalities::<H>::storage(self, key)
}
fn child_storage(&self, _storage_key: &[u8], _key: &[u8]) -> Option<Vec<u8>> {
fn child_storage(&self, _storage_key: ChildStorageKey<H>, _key: &[u8]) -> Option<Vec<u8>> {
None
}
@@ -132,11 +132,10 @@ impl<H: Hasher> Externalities<H> for BasicExternalities where H::Out: Ord + Heap
}
}
fn place_child_storage(&mut self, _storage_key: Vec<u8>, _key: Vec<u8>, _value: Option<Vec<u8>>) -> bool {
false
fn place_child_storage(&mut self, _storage_key: ChildStorageKey<H>, _key: Vec<u8>, _value: Option<Vec<u8>>) {
}
fn kill_child_storage(&mut self, _storage_key: &[u8]) { }
fn kill_child_storage(&mut self, _storage_key: ChildStorageKey<H>) { }
fn clear_prefix(&mut self, prefix: &[u8]) {
self.changes.clear_prefix(prefix);
@@ -149,8 +148,8 @@ impl<H: Hasher> Externalities<H> for BasicExternalities where H::Out: Ord + Heap
trie_root::<H, _, _, _>(self.inner.clone())
}
fn child_storage_root(&mut self, _storage_key: &[u8]) -> Option<Vec<u8>> {
None
fn child_storage_root(&mut self, _storage_key: ChildStorageKey<H>) -> Vec<u8> {
vec![42]
}
fn storage_changes_root(&mut self, _parent: H::Out, _parent_num: u64) -> Option<H::Out> {