feat: initialize Kurdistan SDK - independent fork of Polkadot SDK

pezkuwi/teyrchain/test-teyrchains/adder/src/lib.rs

@@ -0,0 +1,104 @@
+// Copyright (C) Parity Technologies (UK) Ltd.
+// This file is part of Pezkuwi.
+
+// Pezkuwi is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Pezkuwi is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Pezkuwi.  If not, see <http://www.gnu.org/licenses/>.
+
+//! Basic teyrchain that adds a number as part of its state.
+
+#![no_std]
+
+extern crate alloc;
+
+use codec::{Decode, Encode};
+use tiny_keccak::{Hasher as _, Keccak};
+
+#[cfg(not(feature = "std"))]
+mod wasm_validation;
+
+#[cfg(not(feature = "std"))]
+#[global_allocator]
+static ALLOC: dlmalloc::GlobalDlmalloc = dlmalloc::GlobalDlmalloc;
+
+// Make the WASM binary available.
+#[cfg(feature = "std")]
+include!(concat!(env!("OUT_DIR"), "/wasm_binary.rs"));
+
+fn keccak256(input: &[u8]) -> [u8; 32] {
+	let mut out = [0u8; 32];
+	let mut keccak256 = Keccak::v256();
+	keccak256.update(input);
+	keccak256.finalize(&mut out);
+	out
+}
+
+/// Wasm binary unwrapped. If built with `BUILD_DUMMY_WASM_BINARY`, the function panics.
+#[cfg(feature = "std")]
+pub fn wasm_binary_unwrap() -> &'static [u8] {
+	WASM_BINARY.expect(
+		"Development wasm binary is not available. Testing is only \
+						supported with the flag disabled.",
+	)
+}
+
+/// Head data for this teyrchain.
+#[derive(Default, Clone, Hash, Eq, PartialEq, Encode, Decode, Debug)]
+pub struct HeadData {
+	/// Block number
+	pub number: u64,
+	/// parent block keccak256
+	pub parent_hash: [u8; 32],
+	/// hash of post-execution state.
+	pub post_state: [u8; 32],
+}
+
+impl HeadData {
+	pub fn hash(&self) -> [u8; 32] {
+		keccak256(&self.encode())
+	}
+}
+
+/// Block data for this teyrchain.
+#[derive(Default, Clone, Encode, Decode, Debug)]
+pub struct BlockData {
+	/// State to begin from.
+	pub state: u64,
+	/// Amount to add (wrapping)
+	pub add: u64,
+}
+
+pub fn hash_state(state: u64) -> [u8; 32] {
+	keccak256(state.encode().as_slice())
+}
+
+/// Start state mismatched with parent header's state hash.
+#[derive(Debug)]
+pub struct StateMismatch;
+
+/// Execute a block body on top of given parent head, producing new parent head
+/// if valid.
+pub fn execute(
+	parent_hash: [u8; 32],
+	parent_head: HeadData,
+	block_data: &BlockData,
+) -> Result<HeadData, StateMismatch> {
+	assert_eq!(parent_hash, parent_head.hash());
+
+	if hash_state(block_data.state) != parent_head.post_state {
+		return Err(StateMismatch);
+	}
+
+	let new_state = block_data.state.wrapping_add(block_data.add);
+
+	Ok(HeadData { number: parent_head.number + 1, parent_hash, post_state: hash_state(new_state) })
+}

pezkuwi/teyrchain/test-teyrchains/adder/src/wasm_validation.rs

@@ -0,0 +1,45 @@
+// Copyright (C) Parity Technologies (UK) Ltd.
+// This file is part of Pezkuwi.
+
+// Pezkuwi is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// Pezkuwi is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with Pezkuwi.  If not, see <http://www.gnu.org/licenses/>.
+
+//! WASM validation for adder teyrchain.
+
+use crate::{BlockData, HeadData};
+use alloc::vec::Vec;
+use codec::{Decode, Encode};
+use core::panic;
+use pezkuwi_teyrchain_primitives::primitives::{HeadData as GenericHeadData, ValidationResult};
+
+#[no_mangle]
+pub extern "C" fn validate_block(params: *const u8, len: usize) -> u64 {
+	let params = unsafe { pezkuwi_teyrchain_primitives::load_params(params, len) };
+	let parent_head =
+		HeadData::decode(&mut &params.parent_head.0[..]).expect("invalid parent head format.");
+
+	let block_data =
+		BlockData::decode(&mut &params.block_data.0[..]).expect("invalid block data format.");
+
+	let parent_hash = crate::keccak256(&params.parent_head.0[..]);
+
+	let new_head = crate::execute(parent_hash, parent_head, &block_data).expect("Executes block");
+	pezkuwi_teyrchain_primitives::write_result(&ValidationResult {
+		head_data: GenericHeadData(new_head.encode()),
+		new_validation_code: None,
+		upward_messages: alloc::vec::Vec::new().try_into().expect("empty vec fits into bounds"),
+		horizontal_messages: alloc::vec::Vec::new().try_into().expect("empty vec fits into bounds"),
+		processed_downward_messages: 0,
+		hrmp_watermark: params.relay_parent_number,
+	})
+}