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mod error;
mod logger_mock;
use codec::Decode;
pub use error::{Result, WasmTestbedError};
use frame_metadata::{RuntimeMetadata, RuntimeMetadataPrefixed};
use sc_executor::{CallInWasm, RuntimeVersion, WasmExecutionMethod, WasmExecutor};
use sp_core::Hasher;
use sp_runtime::traits::BlakeTwo256;
use sp_wasm_interface::HostFunctions;
use std::fmt;
use substrate_runtime_proposal_hash::{get_parachainsystem_authorize_upgrade, get_result, SrhResult};
use wasm_loader::*;
pub type ReservedMeta = [u8; 4];
const META: ReservedMeta = [0x6d, 0x65, 0x74, 0x61];
pub struct WasmTestBed {
wasm: Vec<u8>,
bytes: Vec<u8>,
compression: Compression,
runtime_metadata_prefixed: RuntimeMetadataPrefixed,
metadata: Vec<u8>,
metadata_version: u8,
core_version: Option<RuntimeVersion>,
}
impl fmt::Debug for WasmTestBed {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
f.debug_struct("SubstrateWasm")
.field("metadata_version", &self.metadata_version)
.field("wasm length", &self.wasm.len())
.finish()
}
}
impl WasmTestBed {
pub fn new(source: &Source) -> Result<Self> {
let loader = WasmLoader::load_from_source(source).map_err(|_| WasmTestbedError::Loading(source.to_string()))?;
let wasm = loader.bytes().to_vec();
let encoded = Self::call(&wasm, "Metadata_metadata", &[])?;
let metadata = <Vec<u8>>::decode(&mut &encoded[..]).map_err(|_| WasmTestbedError::Decoding(encoded))?;
if !WasmTestBed::is_substrate_wasm(&metadata) {
return Err(WasmTestbedError::Unsupported);
}
let runtime_metadata_prefixed: RuntimeMetadataPrefixed =
codec::Decode::decode(&mut &metadata[..]).map_err(|_| WasmTestbedError::Decoding(metadata.clone()))?;
let core_version = Self::get_core_version(&wasm);
let metadata_version = Self::get_metadata_version(&metadata);
Ok(Self {
wasm,
bytes: loader.uncompressed_bytes().to_vec(),
runtime_metadata_prefixed,
metadata,
metadata_version,
core_version,
compression: loader.compression(),
})
}
pub fn compression(&self) -> Compression {
self.compression
}
#[allow(clippy::ptr_arg)]
pub fn is_substrate_wasm(metadata: &WasmBytes) -> bool {
[metadata[0], metadata[1], metadata[2], metadata[3]] == META
}
pub fn reserved_meta(&self) -> ReservedMeta {
[self.metadata[0], self.metadata[1], self.metadata[2], self.metadata[3]]
}
pub fn reserved_meta_valid(&self) -> bool {
self.reserved_meta() == META
}
pub fn wasm(&self) -> &WasmBytes {
&self.wasm
}
pub fn raw_bytes(&self) -> &WasmBytes {
&self.bytes
}
pub fn get_metadata_version(data: &[u8]) -> u8 {
data[4]
}
fn call(wasm: &[u8], method: &str, call_data: &[u8]) -> Result<Vec<u8>> {
let mut ext = sp_state_machine::BasicExternalities::default();
let mut host_functions = sp_io::SubstrateHostFunctions::host_functions();
host_functions.push(&logger_mock::LoggerMock);
let executor = WasmExecutor::new(
WasmExecutionMethod::Interpreted,
Some(32),
host_functions,
8,
None,
);
executor
.call_in_wasm(wasm, None, method, call_data, &mut ext, sp_core::traits::MissingHostFunctions::Allow)
.map_err(|_| WasmTestbedError::Calling(method.to_string()))
}
pub fn get_core_version(wasm: &[u8]) -> Option<RuntimeVersion> {
let encoded = Self::call(wasm, "Core_version", &[]).unwrap();
<RuntimeVersion>::decode(&mut &encoded[..]).ok()
}
pub fn is_supported(&self) -> bool {
matches!(self.metadata_version, x if x >= 12)
}
pub fn metadata_version(&self) -> &u8 {
&self.metadata_version
}
pub fn size(&self) -> usize {
self.bytes.len()
}
pub fn runtime_metadata_prefixed(&self) -> &RuntimeMetadataPrefixed {
&self.runtime_metadata_prefixed
}
pub fn metadata(&self) -> &RuntimeMetadata {
&self.runtime_metadata_prefixed.1
}
pub fn core_version(&self) -> Option<&RuntimeVersion> {
self.core_version.as_ref()
}
pub fn proposal_hash(&self) -> String {
let result: SrhResult = get_result(substrate_runtime_proposal_hash::PREFIX_SYSTEM_SETCODE, &self.bytes);
format!("0x{}", &result.encodedd_hash)
}
pub fn parachain_authorize_upgrade_hash(&self) -> String {
let result = get_parachainsystem_authorize_upgrade(&self.bytes);
format!("0x{}", hex::encode(result))
}
pub fn blake2_256_hash(&self) -> String {
let result = BlakeTwo256::hash(&self.bytes);
format!("{:?}", result)
}
}
#[cfg(test)]
mod tests {
use super::*;
use sp_runtime::RuntimeString;
use std::path::PathBuf;
const WASM_NO_SUBSTRATE: &str = "../../data/wasm/qjs.wasm";
const KUSAMA_1050_VXX: &str = "../../data/kusama/kusama-1050.wasm";
const KUSAMA_1062_VXX: &str = "../../data/kusama/kusama-1062.wasm";
const KUSAMA_2030_VXX: &str = "../../data/kusama/kusama-2030.wasm";
const POLKADOT_01_V11: &str = "../../data/polkadot/polkadot-01.wasm";
const POLKADOT_29_V12: &str = "../../data/polkadot/polkadot-29.wasm";
const WESTEND_V30_V12: &str = "../../data/westend/westend_runtime-v900-rc2.compact.wasm";
const POLKADOT_DEV: &str = "../../data/v900/polkadot-dev-v900-rc1.wasm";
#[cfg(test)]
mod common {
use super::*;
#[test]
#[ignore = "need data"]
fn it_panics_on_non_substrate_wasm() {
assert!(WasmTestBed::new(&Source::File(PathBuf::from(WASM_NO_SUBSTRATE))).is_err());
}
}
#[cfg(test)]
mod kusama {
use super::*;
#[test]
#[should_panic]
#[ignore = "need data"]
fn it_loads_kusama_1050() {
let runtime = WasmTestBed::new(&Source::File(PathBuf::from(KUSAMA_1050_VXX))).unwrap();
println!("{:#?}", runtime);
assert!(runtime.metadata_version == 11);
assert!(runtime.core_version.is_none());
assert!(runtime.is_supported());
}
#[test]
#[should_panic]
#[ignore = "need data"]
fn it_loads_kusama_1062() {
let runtime = WasmTestBed::new(&Source::File(PathBuf::from(KUSAMA_1062_VXX))).unwrap();
println!("{:#?}", runtime);
assert!(runtime.metadata_version == 11);
assert!(runtime.is_supported());
let v = &runtime.core_version.unwrap();
assert!(v.spec_name == RuntimeString::from("kusama"));
assert!(v.impl_name == RuntimeString::from("parity-kusama"));
assert!(v.authoring_version == 2);
assert!(v.spec_version == 1062);
assert!(v.impl_version == 0);
assert!(v.apis.len() == 12);
}
#[test]
#[ignore = "need data"]
fn it_loads_kusama_metdata() {
let runtime = WasmTestBed::new(&Source::File(PathBuf::from(KUSAMA_2030_VXX))).unwrap();
println!("{:#?}", runtime);
assert!(runtime.metadata_version == 12);
assert!(runtime.is_supported());
}
#[test]
#[ignore = "need data"]
fn it_loads_kusama_2030() {
let runtime = WasmTestBed::new(&Source::File(PathBuf::from(KUSAMA_2030_VXX))).unwrap();
println!("{:#?}", runtime);
assert!(runtime.metadata_version == 12);
assert!(runtime.is_supported());
let v = &runtime.core_version.unwrap();
assert!(v.spec_name == RuntimeString::from("kusama"));
assert!(v.impl_name == RuntimeString::from("parity-kusama"));
assert!(v.authoring_version == 2);
assert!(v.spec_version == 2030);
assert!(v.impl_version == 0);
assert!(v.apis.len() == 12);
}
}
#[cfg(test)]
mod polkadot {
use super::*;
#[test]
#[should_panic]
#[ignore = "need data"]
fn it_loads_polkadot_01() {
let runtime = WasmTestBed::new(&Source::File(PathBuf::from(POLKADOT_01_V11))).unwrap();
println!("{:#?}", runtime);
assert!(runtime.metadata_version == 11);
assert!(runtime.is_supported());
}
#[test]
#[ignore = "need data"]
fn it_loads_polkadot_29() {
let runtime = WasmTestBed::new(&Source::File(PathBuf::from(POLKADOT_29_V12))).unwrap();
println!("{:#?}", runtime);
assert!(runtime.metadata_version == 12);
assert!(runtime.is_supported());
}
}
#[cfg(test)]
mod westend {
use super::*;
#[test]
#[ignore = "need data"]
fn it_loads_westend_30() {
let runtime = WasmTestBed::new(&Source::File(PathBuf::from(WESTEND_V30_V12))).unwrap();
println!("{:#?}", runtime);
assert!(runtime.metadata_version == 12);
assert!(runtime.is_supported());
}
}
#[cfg(test)]
mod polkadot_dev {
use super::*;
#[test]
#[ignore = "need data"]
fn it_loads_polkadot_dev() {
let runtime = WasmTestBed::new(&Source::File(PathBuf::from(POLKADOT_DEV))).unwrap();
println!("{:#?}", runtime);
assert!(runtime.metadata_version == 12);
assert!(runtime.is_supported());
}
}
}