git.delta.rocks / unique-network / refs/commits / 8f77dc2402c4

1// Copyright 2019-2022 Unique Network (Gibraltar) Ltd.2// This file is part of Unique Network.34// Unique Network is free software: you can redistribute it and/or modify5// it under the terms of the GNU General Public License as published by6// the Free Software Foundation, either version 3 of the License, or7// (at your option) any later version.89// Unique Network is distributed in the hope that it will be useful,10// but WITHOUT ANY WARRANTY; without even the implied warranty of11// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the12// GNU General Public License for more details.1314// You should have received a copy of the GNU General Public License15// along with Unique Network. If not, see <http://www.gnu.org/licenses/>.1617use up_data_structs::{CollectionId, TokenId};18use sp_core::H160;1920// 0x17c4e6453Cc49AAAaEACA894e6D9683e00000001 - collection 121// TODO: Unhardcode prefix22const ETH_ACCOUNT_PREFIX: [u8; 16] = [23	0x17, 0xc4, 0xe6, 0x45, 0x3c, 0xc4, 0x9a, 0xaa, 0xae, 0xac, 0xa8, 0x94, 0xe6, 0xd9, 0x68, 0x3e,24];2526// 0xf8238ccfff8ed887463fd5e00000000100000002  - collection 1, token 227// TODO: Unhardcode prefix28const ETH_ACCOUNT_TOKEN_PREFIX: [u8; 12] = [29	0xf8, 0x23, 0x8c, 0xcf, 0xff, 0x8e, 0xd8, 0x87, 0x46, 0x3f, 0xd5, 0xe0,30];3132pub fn map_eth_to_id(eth: &H160) -> Option<CollectionId> {33	if eth[0..16] != ETH_ACCOUNT_PREFIX {34		return None;35	}36	let mut id_bytes = [0; 4];37	id_bytes.copy_from_slice(&eth[16..20]);38	Some(CollectionId(u32::from_be_bytes(id_bytes)))39}40pub fn collection_id_to_address(id: CollectionId) -> H160 {41	let mut out = [0; 20];42	out[0..16].copy_from_slice(&ETH_ACCOUNT_PREFIX);43	out[16..20].copy_from_slice(&u32::to_be_bytes(id.0));44	H160(out)45}4647pub fn map_eth_to_token_id(eth: &H160) -> Option<(CollectionId, TokenId)> {48	if eth[0..12] != ETH_ACCOUNT_TOKEN_PREFIX {49		return None;50	}51	let mut id_bytes = [0; 4];52	let mut token_id_bytes = [0; 4];53	id_bytes.copy_from_slice(&eth[12..16]);54	token_id_bytes.copy_from_slice(&eth[16..20]);55	Some((56		CollectionId(u32::from_be_bytes(id_bytes)),57		TokenId(u32::from_be_bytes(token_id_bytes)),58	))59}60pub fn collection_token_id_to_address(id: CollectionId, token: TokenId) -> H160 {61	let mut out = [0; 20];62	out[0..12].copy_from_slice(&ETH_ACCOUNT_TOKEN_PREFIX);63	out[12..16].copy_from_slice(&u32::to_be_bytes(id.0));64	out[16..20].copy_from_slice(&u32::to_be_bytes(token.0));65	H160(out)66}