pezkuwichain
b6d35f6faf
Updated 4763 files with dual copyright: - Parity Technologies (UK) Ltd. - Dijital Kurdistan Tech Institute
78 lines
2.5 KiB
Rust
78 lines
2.5 KiB
Rust
// This file is part of Bizinikiwi.
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// Copyright (C) Parity Technologies (UK) Ltd. and Dijital Kurdistan Tech Institute
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// SPDX-License-Identifier: Apache-2.0
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#![no_std]
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#![no_main]
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include!("../panic_handler.rs");
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use uapi::{input, HostFn, HostFnImpl as api};
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const DJANGO_FALLBACK: [u8; 20] = [4u8; 20];
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#[no_mangle]
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#[polkavm_derive::polkavm_export]
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pub extern "C" fn deploy() {
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// make sure that the deposit for the immutable data is refunded
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api::set_immutable_data(&[1, 2, 3, 4, 5])
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}
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#[no_mangle]
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#[polkavm_derive::polkavm_export]
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pub extern "C" fn call() {
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// If the input data is not empty, then recursively call self with empty input data.
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// This should trap instead of self-destructing since a contract cannot be removed, while it's
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// in the execution stack. If the recursive call traps, then trap here as well.
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input!(input, 4,);
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if !input.is_empty() {
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let mut addr = [0u8; 20];
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api::address(&mut addr);
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api::call(
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uapi::CallFlags::ALLOW_REENTRY,
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&addr,
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u64::MAX, // How much ref_time to devote for the execution. u64 = all.
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u64::MAX, // How much proof_size to devote for the execution. u64 = all.
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&[u8::MAX; 32], // No deposit limit.
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&[0u8; 32], // Value to transfer.
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&[0u8; 0],
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None,
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)
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.unwrap();
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} else {
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// Try to terminate and give balance to django.
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// Build the calldata: selector + ABI-encoded address
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let selector = uapi::solidity_selector("terminate(address)");
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let mut calldata = [0u8; 4 + 32];
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calldata[0..4].copy_from_slice(&selector);
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// ABI encode address: right-align into 32 bytes (pad with 12 leading zeros)
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calldata[4 + 12..4 + 32].copy_from_slice(&DJANGO_FALLBACK);
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let _ = api::call(
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uapi::CallFlags::ALLOW_REENTRY,
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&uapi::SYSTEM_PRECOMPILE_ADDR,
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u64::MAX,
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u64::MAX,
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&[u8::MAX; 32],
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&[0u8; 32],
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&calldata,
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None,
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).unwrap();
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}
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}
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