Show contract parameters in MethodDecoding (#4024)

* Add decoding of Inner Contract Deployment params #3715

* Fixed TypedInput when formatted value

* Fix TypedInput

* PR Grumble

* Add test to `Param.toParams`

js/src/abi/spec/param.js

@@ -31,6 +31,12 @@ export default class Param {
   }
 
   static toParams (params) {
-    return params.map((param) => new Param(param.name, param.type));
+    return params.map((param) => {
+      if (param instanceof Param) {
+        return param;
+      }
+
+      return new Param(param.name, param.type);
+    });
   }
 }

js/src/abi/spec/param.spec.js

@@ -34,5 +34,14 @@ describe('abi/spec/Param', () => {
       expect(params[0].name).to.equal('foo');
       expect(params[0].kind.type).to.equal('uint');
     });
+
+    it('converts only if needed', () => {
+      const _params = Param.toParams([{ name: 'foo', type: 'uint' }]);
+      const params = Param.toParams(_params);
+
+      expect(params.length).to.equal(1);
+      expect(params[0].name).to.equal('foo');
+      expect(params[0].kind.type).to.equal('uint');
+    });
   });
 });

js/src/api/util/decode.js

@@ -26,7 +26,9 @@ export function decodeCallData (data) {
 
   if (data.substr(0, 2) === '0x') {
     return decodeCallData(data.slice(2));
-  } else if (data.length < 8) {
+  }
+
+  if (data.length < 8) {
     throw new Error('Input to decodeCallData should be method signature + data');
   }
 
@@ -42,10 +44,14 @@ export function decodeCallData (data) {
 export function decodeMethodInput (methodAbi, paramdata) {
   if (!methodAbi) {
     throw new Error('decodeMethodInput should receive valid method-specific ABI');
-  } else if (paramdata && paramdata.length) {
+  }
+
+  if (paramdata && paramdata.length) {
     if (!isHex(paramdata)) {
       throw new Error('Input to decodeMethodInput should be a hex value');
-    } else if (paramdata.substr(0, 2) === '0x') {
+    }
+
+    if (paramdata.substr(0, 2) === '0x') {
       return decodeMethodInput(methodAbi, paramdata.slice(2));
     }
   }

js/src/ui/Form/AddressSelect/addressSelect.js

@@ -60,6 +60,7 @@ class AddressSelect extends Component {
     // Optional props
     allowCopy: PropTypes.bool,
     allowInput: PropTypes.bool,
+    className: PropTypes.string,
     disabled: PropTypes.bool,
     error: nodeOrStringProptype(),
     hint: nodeOrStringProptype(),
@@ -123,13 +124,14 @@ class AddressSelect extends Component {
 
   renderInput () {
     const { focused } = this.state;
-    const { accountsInfo, allowCopy, disabled, error, hint, label, readOnly, value } = this.props;
+    const { accountsInfo, allowCopy, className, disabled, error, hint, label, readOnly, value } = this.props;
 
     const input = (
       <InputAddress
         accountsInfo={ accountsInfo }
         allowCopy={ allowCopy }
-        disabled={ disabled }
+        className={ className }
+        disabled={ disabled || readOnly }
         error={ error }
         hint={ hint }
         focused={ focused }

js/src/ui/Form/InputAddress/inputAddress.js

@@ -75,6 +75,12 @@ class InputAddress extends Component {
       containerClasses.push(styles.small);
     }
 
+    const props = {};
+
+    if (!readOnly && !disabled) {
+      props.focused = focused;
+    }
+
     return (
       <div className={ containerClasses.join(' ') }>
         <Input
@@ -82,7 +88,6 @@ class InputAddress extends Component {
           className={ classes.join(' ') }
           disabled={ disabled }
           error={ error }
-          focused={ focused }
           hideUnderline={ hideUnderline }
           hint={ hint }
           label={ label }
@@ -96,7 +101,9 @@ class InputAddress extends Component {
             text && account
               ? account.name
               : (nullName || value)
-          } />
+          }
+          { ...props }
+        />
         { icon }
       </div>
     );

js/src/ui/Form/InputAddressSelect/inputAddressSelect.js

@@ -27,6 +27,7 @@ class InputAddressSelect extends Component {
     contracts: PropTypes.object.isRequired,
 
     allowCopy: PropTypes.bool,
+    className: PropTypes.string,
     error: PropTypes.string,
     hint: PropTypes.string,
     label: PropTypes.string,
@@ -36,13 +37,14 @@ class InputAddressSelect extends Component {
   };
 
   render () {
-    const { accounts, allowCopy, contacts, contracts, label, hint, error, value, onChange, readOnly } = this.props;
+    const { accounts, allowCopy, className, contacts, contracts, label, hint, error, value, onChange, readOnly } = this.props;
 
     return (
       <AddressSelect
         allowCopy={ allowCopy }
         allowInput
         accounts={ accounts }
+        className={ className }
         contacts={ contacts }
         contracts={ contracts }
         error={ error }

js/src/ui/Form/TypedInput/typedInput.js

@@ -41,6 +41,7 @@ export default class TypedInput extends Component {
 
     accounts: PropTypes.object,
     allowCopy: PropTypes.bool,
+    className: PropTypes.string,
     error: PropTypes.any,
     hint: PropTypes.string,
     isEth: PropTypes.bool,
@@ -91,7 +92,7 @@ export default class TypedInput extends Component {
     const { type } = param;
 
     if (type === ABI_TYPES.ARRAY) {
-      const { accounts, label, value = param.default } = this.props;
+      const { accounts, className, label, value = param.default } = this.props;
       const { subtype, length } = param;
 
       const fixedLength = !!length;
@@ -107,6 +108,7 @@ export default class TypedInput extends Component {
           <TypedInput
             accounts={ accounts }
             allowCopy={ allowCopy }
+            className={ className }
             key={ `${subtype.type}_${index}` }
             onChange={ onChange }
             param={ subtype }
@@ -236,17 +238,34 @@ export default class TypedInput extends Component {
     );
   }
 
+  getNumberValue (value) {
+    if (!value) {
+      return value;
+    }
+
+    const { readOnly } = this.props;
+
+    const rawValue = typeof value === 'string'
+      ? value.replace(/,/g, '')
+      : value;
+
+    const bnValue = new BigNumber(rawValue);
+
+    return readOnly
+      ? bnValue.toFormat()
+      : bnValue.toNumber();
+  }
+
   renderInteger (value = this.props.value, onChange = this.onChange) {
-    const { allowCopy, label, error, hint, min, max, readOnly } = this.props;
+    const { allowCopy, className, label, error, hint, min, max, readOnly } = this.props;
     const param = this.getParam();
 
-    const realValue = value
+    const realValue = this.getNumberValue(value);
-      ? (new BigNumber(value))[readOnly ? 'toFormat' : 'toNumber']()
-      : value;
 
     return (
       <Input
         allowCopy={ allowCopy }
+        className={ className }
         label={ label }
         hint={ hint }
         value={ realValue }
@@ -269,16 +288,15 @@ export default class TypedInput extends Component {
    * @see https://github.com/facebook/react/issues/1549
    */
   renderFloat (value = this.props.value, onChange = this.onChange) {
-    const { allowCopy, label, error, hint, min, max, readOnly } = this.props;
+    const { allowCopy, className, label, error, hint, min, max, readOnly } = this.props;
     const param = this.getParam();
 
-    const realValue = value
+    const realValue = this.getNumberValue(value);
-      ? (new BigNumber(value))[readOnly ? 'toFormat' : 'toNumber']()
-      : value;
 
     return (
       <Input
         allowCopy={ allowCopy }
+        className={ className }
         label={ label }
         hint={ hint }
         value={ realValue }
@@ -293,11 +311,12 @@ export default class TypedInput extends Component {
   }
 
   renderDefault () {
-    const { allowCopy, label, value, error, hint, readOnly } = this.props;
+    const { allowCopy, className, label, value, error, hint, readOnly } = this.props;
 
     return (
       <Input
         allowCopy={ allowCopy }
+        className={ className }
         label={ label }
         hint={ hint }
         value={ value }
@@ -309,12 +328,13 @@ export default class TypedInput extends Component {
   }
 
   renderAddress () {
-    const { accounts, allowCopy, label, value, error, hint, readOnly } = this.props;
+    const { accounts, allowCopy, className, label, value, error, hint, readOnly } = this.props;
 
     return (
       <InputAddressSelect
         allowCopy={ allowCopy }
         accounts={ accounts }
+        className={ className }
         error={ error }
         hint={ hint }
         label={ label }
@@ -326,7 +346,7 @@ export default class TypedInput extends Component {
   }
 
   renderBoolean () {
-    const { allowCopy, label, value, error, hint, readOnly } = this.props;
+    const { allowCopy, className, label, value, error, hint, readOnly } = this.props;
 
     if (readOnly) {
       return this.renderDefault();
@@ -346,6 +366,7 @@ export default class TypedInput extends Component {
     return (
       <Select
         allowCopy={ allowCopy }
+        className={ className }
         error={ error }
         hint={ hint }
         label={ label }

js/src/ui/MethodDecoding/methodDecoding.js

@@ -14,12 +14,11 @@
 // You should have received a copy of the GNU General Public License
 // along with Parity.  If not, see <http://www.gnu.org/licenses/>.
 
-import BigNumber from 'bignumber.js';
 import React, { Component, PropTypes } from 'react';
 import { connect } from 'react-redux';
 import CircularProgress from 'material-ui/CircularProgress';
 
-import { Input, InputAddress } from '../Form';
+import { TypedInput, InputAddress } from '../Form';
 import MethodDecodingStore from './methodDecodingStore';
 
 import styles from './methodDecoding.css';
@@ -245,6 +244,7 @@ class MethodDecoding extends Component {
 
   renderDeploy () {
     const { historic, transaction } = this.props;
+    const { methodInputs } = this.state;
 
     if (!historic) {
       return (
@@ -261,6 +261,14 @@ class MethodDecoding extends Component {
         </div>
 
         { this.renderAddressName(transaction.creates, false) }
+
+        <div>
+          { methodInputs && methodInputs.length ? 'with the following parameters:' : ''}
+        </div>
+
+        <div className={ styles.inputs }>
+          { this.renderInputs() }
+        </div>
       </div>
     );
   }
@@ -364,39 +372,31 @@ class MethodDecoding extends Component {
   renderInputs () {
     const { methodInputs } = this.state;
 
-    return methodInputs.map((input, index) => {
+    if (!methodInputs || methodInputs.length === 0) {
-      switch (input.type) {
+      return null;
-        case 'address':
-          return (
-            <InputAddress
-              disabled
-              text
-              key={ index }
-              className={ styles.input }
-              value={ input.value }
-              label={ input.type } />
-          );
-
-        default:
-          return (
-            <Input
-              readOnly
-              allowCopy
-              key={ index }
-              className={ styles.input }
-              value={ this.renderValue(input.value) }
-              label={ input.type } />
-          );
     }
+
+    const inputs = methodInputs.map((input, index) => {
+      return (
+        <TypedInput
+          allowCopy
+          className={ styles.input }
+          label={ input.type }
+          key={ index }
+          param={ input.type }
+          readOnly
+          value={ this.renderValue(input.value) }
+        />
+      );
     });
+
+    return inputs;
   }
 
   renderValue (value) {
     const { api } = this.context;
 
-    if (api.util.isInstanceOf(value, BigNumber)) {
+    if (api.util.isArray(value)) {
-      return value.toFormat(0);
-    } else if (api.util.isArray(value)) {
       return api.util.bytesToHex(value);
     }
 

js/src/ui/MethodDecoding/methodDecodingStore.js

@@ -18,6 +18,8 @@ import Contracts from '~/contracts';
 import Abi from '~/abi';
 import * as abis from '~/contracts/abi';
 
+import { decodeMethodInput } from '~/api/util/decode';
+
 const CONTRACT_CREATE = '0x60606040';
 
 let instance = null;
@@ -26,6 +28,8 @@ export default class MethodDecodingStore {
 
   api = null;
 
+  _bytecodes = {};
+  _contractsAbi = {};
   _isContract = {};
   _methods = {};
 
@@ -46,12 +50,17 @@ export default class MethodDecodingStore {
       if (!contract || !contract.meta || !contract.meta.abi) {
         return;
       }
-      this.loadFromAbi(contract.meta.abi);
+      this.loadFromAbi(contract.meta.abi, contract.address);
     });
   }
 
-  loadFromAbi (_abi) {
+  loadFromAbi (_abi, contractAddress) {
     const abi = new Abi(_abi);
+
+    if (contractAddress && abi) {
+      this._contractsAbi[contractAddress] = abi;
+    }
+
     abi
       .functions
       .map((f) => ({ sign: f.signature, abi: f.abi }))
@@ -111,6 +120,7 @@ export default class MethodDecodingStore {
     const contractAddress = isReceived ? transaction.from : transaction.to;
     const input = transaction.input || transaction.data;
 
+    result.input = input;
     result.received = isReceived;
 
     // No input, should be a ETH transfer
@@ -118,17 +128,20 @@ export default class MethodDecodingStore {
       return Promise.resolve(result);
     }
 
-    try {
+    let signature;
-      const { signature } = this.api.util.decodeCallData(input);
 
-      if (signature === CONTRACT_CREATE || transaction.creates) {
+    try {
-        result.contract = true;
+      const decodeCallDataResult = this.api.util.decodeCallData(input);
-        return Promise.resolve({ ...result, deploy: true });
+      signature = decodeCallDataResult.signature;
-      }
     } catch (e) {}
 
+    // Contract deployment
+    if (!signature || signature === CONTRACT_CREATE || transaction.creates) {
+      return this.decodeContractCreation(result, contractAddress || transaction.creates);
+    }
+
     return this
-      .isContract(contractAddress || transaction.creates)
+      .isContract(contractAddress)
       .then((isContract) => {
         result.contract = isContract;
 
@@ -140,11 +153,6 @@ export default class MethodDecodingStore {
         result.signature = signature;
         result.params = paramdata;
 
-        // Contract deployment
-        if (!signature) {
-          return Promise.resolve({ ...result, deploy: true });
-        }
-
         return this
           .fetchMethodAbi(signature)
           .then((abi) => {
@@ -173,6 +181,68 @@ export default class MethodDecodingStore {
       });
   }
 
+  decodeContractCreation (data, contractAddress) {
+    const result = {
+      ...data,
+      contract: true,
+      deploy: true
+    };
+
+    const { input } = data;
+    const abi = this._contractsAbi[contractAddress];
+
+    if (!input || !abi || !abi.constructors || abi.constructors.length === 0) {
+      return Promise.resolve(result);
+    }
+
+    const constructorAbi = abi.constructors[0];
+
+    const rawInput = /^(?:0x)?(.*)$/.exec(input)[1];
+
+    return this
+      .getCode(contractAddress)
+      .then((code) => {
+        if (!code || /^(0x)0*?$/.test(code)) {
+          return result;
+        }
+
+        const rawCode = /^(?:0x)?(.*)$/.exec(code)[1];
+        const codeOffset = rawInput.indexOf(rawCode);
+
+        if (codeOffset === -1) {
+          return result;
+        }
+
+        // Params are the last bytes of the transaction Input
+        // (minus the bytecode). It seems that they are repeated
+        // twice
+        const params = rawInput.slice(codeOffset + rawCode.length);
+        const paramsBis = params.slice(params.length / 2);
+
+        let decodedInputs;
+
+        try {
+          decodedInputs = decodeMethodInput(constructorAbi, params);
+        } catch (e) {}
+
+        try {
+          if (!decodedInputs) {
+            decodedInputs = decodeMethodInput(constructorAbi, paramsBis);
+          }
+        } catch (e) {}
+
+        if (decodedInputs && decodedInputs.length > 0) {
+          result.inputs = decodedInputs
+            .map((value, index) => {
+              const type = constructorAbi.inputs[index].kind.type;
+              return { type, value };
+            });
+        }
+
+        return result;
+      });
+  }
+
   fetchMethodAbi (signature) {
     if (this._methods[signature] !== undefined) {
       return Promise.resolve(this._methods[signature]);
@@ -209,7 +279,7 @@ export default class MethodDecodingStore {
       return Promise.resolve(this._isContract[contractAddress]);
     }
 
-    this._isContract[contractAddress] = this.api.eth
+    this._isContract[contractAddress] = this
       .getCode(contractAddress)
       .then((bytecode) => {
         // Is a contract if the address contains *valid* bytecode
@@ -222,4 +292,24 @@ export default class MethodDecodingStore {
     return Promise.resolve(this._isContract[contractAddress]);
   }
 
+  getCode (contractAddress) {
+    // If zero address, resolve to '0x'
+    if (!contractAddress || /^(0x)?0*$/.test(contractAddress)) {
+      return Promise.resolve('0x');
+    }
+
+    if (this._bytecodes[contractAddress]) {
+      return Promise.resolve(this._bytecodes[contractAddress]);
+    }
+
+    this._bytecodes[contractAddress] = this.api.eth
+      .getCode(contractAddress)
+      .then((bytecode) => {
+        this._bytecodes[contractAddress] = bytecode;
+        return this._bytecodes[contractAddress];
+      });
+
+    return Promise.resolve(this._bytecodes[contractAddress]);
+  }
+
 }