diff options
Diffstat (limited to 'packages/testnet-faucets/src/ts/parameter_transformer.ts')
-rw-r--r-- | packages/testnet-faucets/src/ts/parameter_transformer.ts | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/packages/testnet-faucets/src/ts/parameter_transformer.ts b/packages/testnet-faucets/src/ts/parameter_transformer.ts new file mode 100644 index 000000000..c5711d462 --- /dev/null +++ b/packages/testnet-faucets/src/ts/parameter_transformer.ts @@ -0,0 +1,29 @@ +import { addressUtils } from '@0xproject/utils'; +import { NextFunction, Request, Response } from 'express'; +import * as _ from 'lodash'; + +import { configs } from './configs'; +import { rpcUrls } from './rpc_urls'; +import { utils } from './utils'; + +const DEFAULT_NETWORK_ID = 42; // kovan + +export const parameterTransformer = { + transform(req: Request, res: Response, next: NextFunction) { + const recipientAddress = req.params.recipient; + if (_.isUndefined(recipientAddress) || !addressUtils.isAddress(recipientAddress)) { + res.status(400).send('INVALID_RECIPIENT_ADDRESS'); + return; + } + const lowerCaseRecipientAddress = recipientAddress.toLowerCase(); + req.params.recipient = lowerCaseRecipientAddress; + const networkId = _.get(req.query, 'networkId', DEFAULT_NETWORK_ID); + const rpcUrlIfExists = _.get(rpcUrls, networkId); + if (_.isUndefined(rpcUrlIfExists)) { + res.status(400).send('UNSUPPORTED_NETWORK_ID'); + return; + } + req.params.networkId = networkId; + next(); + }, +}; |