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authorRemco Bloemen <remco@wicked.ventures>2018-06-22 13:03:42 +0800
committerAmir Bandeali <abandeali1@gmail.com>2018-06-26 07:19:07 +0800
commit7b0c13c1219fbe2d47b540476eaebb1f6358213d (patch)
tree7b81f105b09ed2ea458513c94297486e7efc3319 /packages/order-utils
parenta98ecc05af5b264f981087005bb3fa041d5c8756 (diff)
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WIP
Diffstat (limited to 'packages/order-utils')
-rw-r--r--packages/order-utils/src/asset_proxy_utils.ts44
1 files changed, 28 insertions, 16 deletions
diff --git a/packages/order-utils/src/asset_proxy_utils.ts b/packages/order-utils/src/asset_proxy_utils.ts
index 915ee5032..fe91a3525 100644
--- a/packages/order-utils/src/asset_proxy_utils.ts
+++ b/packages/order-utils/src/asset_proxy_utils.ts
@@ -4,7 +4,7 @@ import BN = require('bn.js');
import ethUtil = require('ethereumjs-util');
import * as _ from 'lodash';
-const ERC20_ASSET_DATA_BYTE_LENGTH = 21;
+const ERC20_ASSET_DATA_BYTE_LENGTH = 36;
const ERC721_ASSET_DATA_MINIMUM_BYTE_LENGTH = 53;
const ASSET_DATA_ADDRESS_OFFSET = 0;
const ERC721_ASSET_DATA_TOKEN_ID_OFFSET = 20;
@@ -16,17 +16,26 @@ export const assetProxyUtils = {
return ethUtil.toBuffer(assetProxyId);
},
decodeAssetProxyId(encodedAssetProxyId: Buffer): AssetProxyId {
- return ethUtil.bufferToInt(encodedAssetProxyId);
+ const string = ethUtil.bufferToHex(encodedAssetProxyId);
+ if (string === AssetProxyId.ERC20) {
+ return AssetProxyId.ERC20;
+ }
+ if (string === AssetProxyId.ERC721) {
+ return AssetProxyId.ERC721;
+ }
+ throw new Error(`Invalid ProxyId: ${string}`);
},
encodeAddress(address: string): Buffer {
if (!ethUtil.isValidAddress(address)) {
throw new Error(`Invalid Address: ${address}`);
}
const encodedAddress = ethUtil.toBuffer(address);
- return encodedAddress;
+ const padded = ethUtil.setLengthLeft(encodedAddress, 32);
+ return padded;
},
decodeAddress(encodedAddress: Buffer): string {
- const address = ethUtil.bufferToHex(encodedAddress);
+ const unpadded = ethUtil.setLengthLeft(encodedAddress, 20);
+ const address = ethUtil.bufferToHex(unpadded);
if (!ethUtil.isValidAddress(address)) {
throw new Error(`Invalid Address: ${address}`);
}
@@ -48,7 +57,7 @@ export const assetProxyUtils = {
encodeERC20AssetData(tokenAddress: string): string {
const encodedAssetProxyId = assetProxyUtils.encodeAssetProxyId(AssetProxyId.ERC20);
const encodedAddress = assetProxyUtils.encodeAddress(tokenAddress);
- const encodedAssetData = Buffer.concat([encodedAddress, encodedAssetProxyId]);
+ const encodedAssetData = Buffer.concat([encodedAssetProxyId, encodedAddress]);
const encodedAssetDataHex = ethUtil.bufferToHex(encodedAssetData);
return encodedAssetDataHex;
},
@@ -56,13 +65,12 @@ export const assetProxyUtils = {
const encodedAssetData = ethUtil.toBuffer(proxyData);
if (encodedAssetData.byteLength !== ERC20_ASSET_DATA_BYTE_LENGTH) {
throw new Error(
- `Could not decode ERC20 Proxy Data. Expected length of encoded data to be 21. Got ${
+ `Could not decode ERC20 Proxy Data. Expected length of encoded data to be ${ERC20_ASSET_DATA_BYTE_LENGTH}. Got ${
encodedAssetData.byteLength
}`,
);
}
- const assetProxyIdOffset = encodedAssetData.byteLength - 1;
- const encodedAssetProxyId = encodedAssetData.slice(assetProxyIdOffset);
+ const encodedAssetProxyId = encodedAssetData.slice(0, 4);
const assetProxyId = assetProxyUtils.decodeAssetProxyId(encodedAssetProxyId);
if (assetProxyId !== AssetProxyId.ERC20) {
throw new Error(
@@ -71,7 +79,7 @@ export const assetProxyUtils = {
}), but got ${assetProxyId}`,
);
}
- const encodedTokenAddress = encodedAssetData.slice(ASSET_DATA_ADDRESS_OFFSET, assetProxyIdOffset);
+ const encodedTokenAddress = encodedAssetData.slice(16, 20);
const tokenAddress = assetProxyUtils.decodeAddress(encodedTokenAddress);
const erc20AssetData = {
assetProxyId,
@@ -90,26 +98,30 @@ export const assetProxyUtils = {
const encodedReceiverDataLength = assetProxyUtils.encodeUint256(receiverDataLength);
encodedAssetData = Buffer.concat([encodedAssetData, encodedReceiverDataLength, encodedReceiverData]);
}
- encodedAssetData = Buffer.concat([encodedAssetData, encodedAssetProxyId]);
+ encodedAssetData = Buffer.concat([encodedAssetProxyId, encodedAssetData]);
const encodedAssetDataHex = ethUtil.bufferToHex(encodedAssetData);
return encodedAssetDataHex;
},
decodeERC721AssetData(assetData: string): ERC721AssetData {
+
const encodedAssetData = ethUtil.toBuffer(assetData);
if (encodedAssetData.byteLength < ERC721_ASSET_DATA_MINIMUM_BYTE_LENGTH) {
throw new Error(
- `Could not decode ERC20 Proxy Data. Expected length of encoded data to be at least 53. Got ${
+ `Could not decode ERC20 Proxy Data. Expected length of encoded data to be at least ${ERC721_ASSET_DATA_MINIMUM_BYTE_LENGTH}. Got ${
encodedAssetData.byteLength
}`,
);
}
+ console.log(rawDecode);
+ //const result = ethAbi.rawDecode(['address', 'uint256', 'bytes'], encodedAssetData.slice(4));
+ //console.log(result);
+
const encodedTokenAddress = encodedAssetData.slice(
ASSET_DATA_ADDRESS_OFFSET,
ERC721_ASSET_DATA_TOKEN_ID_OFFSET,
);
- const proxyIdOffset = encodedAssetData.byteLength - 1;
- const encodedAssetProxyId = encodedAssetData.slice(proxyIdOffset);
+ const encodedAssetProxyId = encodedAssetData.slice(0, 4);
const assetProxyId = assetProxyUtils.decodeAssetProxyId(encodedAssetProxyId);
if (assetProxyId !== AssetProxyId.ERC721) {
throw new Error(
@@ -155,14 +167,14 @@ export const assetProxyUtils = {
},
decodeAssetDataId(assetData: string): AssetProxyId {
const encodedAssetData = ethUtil.toBuffer(assetData);
- if (encodedAssetData.byteLength < 1) {
+ if (encodedAssetData.byteLength < 4) {
throw new Error(
- `Could not decode Proxy Data. Expected length of encoded data to be at least 1. Got ${
+ `Could not decode Proxy Data. Expected length of encoded data to be at least 4. Got ${
encodedAssetData.byteLength
}`,
);
}
- const encodedAssetProxyId = encodedAssetData.slice(-1);
+ const encodedAssetProxyId = encodedAssetData.slice(0, 4);
const assetProxyId = assetProxyUtils.decodeAssetProxyId(encodedAssetProxyId);
return assetProxyId;
},