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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,17 +1,13 @@ | ||
| import * as ethers from "ethers"; | ||
| import { INFURA_API_KEY } from "../../config"; | ||
| import { Hash } from "../../types"; | ||
| import { Hash } from "../../types/core"; | ||
|
|
||
| interface ContractInstance { | ||
| abi: any; // type is any of json file in abi folder | ||
| network: string; | ||
| contractAddress: Hash; | ||
| } | ||
| export const contractInstance = ({ | ||
| abi, | ||
| network, | ||
| contractAddress | ||
| }: ContractInstance) => { | ||
| export const contractInstance = ({ abi, network, contractAddress }: ContractInstance) => { | ||
| const provider = new ethers.providers.InfuraProvider(network, INFURA_API_KEY); | ||
| return new ethers.Contract(contractAddress, abi, provider); | ||
| }; |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,96 +1,24 @@ | ||
| import { SignedDocument } from "@govtechsg/open-attestation"; | ||
| import { verifyHash } from "./hash/hash"; | ||
| import { verifyIssued } from "./issued/verify"; | ||
| import { verifyRevoked } from "./revoked/verify"; | ||
| import { documentToSmartContracts } from "./common/smartContract/documentToSmartContracts"; | ||
| import { OpenAttestationContract } from "./types"; | ||
|
|
||
| /** | ||
| * Unwraps the resolve type of promises | ||
| * e.g. | ||
| * type foo = () => Promise<boolean>; | ||
| * type bar = ResolveType<foo>; // bar is a boolean | ||
| */ | ||
| type ResolveType<T> = T extends (...args: any[]) => Promise<infer U> ? U : T; | ||
|
|
||
| type VerificationChecks = [ | ||
| ReturnType<typeof verifyHash>, | ||
| ReturnType<typeof verifyIssued>, | ||
| ReturnType<typeof verifyRevoked> | ||
| ]; | ||
|
|
||
| type VerificationChecksWithValidity = [ | ||
| ReturnType<typeof verifyHash>, | ||
| ReturnType<typeof verifyIssued>, | ||
| ReturnType<typeof verifyRevoked>, | ||
| Promise<boolean> | ||
| import { verificationManager } from "./verifiers/verificationManager"; | ||
| import { Verifier } from "./types/core"; | ||
| import { openAttestationTamperCheck } from "./verifiers/openAttestationTamperCheck"; | ||
| import { openAttestationDnsTxtIdentity } from "./verifiers/openAttestationDnsTxtIdentity"; | ||
| import { openAttestationEthereumDocumentStoreIssued } from "./verifiers/openAttestationEthereumDocumentStoreIssued"; | ||
| import { openAttestationEthereumDocumentStoreRevoked } from "./verifiers/openAttestationEthereumDocumentStoreRevoked"; | ||
|
|
||
| const defaultVerifiers: Verifier[] = [ | ||
| openAttestationTamperCheck, | ||
| openAttestationEthereumDocumentStoreIssued, | ||
| openAttestationEthereumDocumentStoreRevoked, | ||
| openAttestationDnsTxtIdentity | ||
| ]; | ||
|
|
||
| const getAllChecks = ( | ||
| document: SignedDocument, | ||
| smartContracts: OpenAttestationContract[] | ||
| ): VerificationChecks => [ | ||
| verifyHash(document), | ||
| verifyIssued(document, smartContracts), | ||
| verifyRevoked(document, smartContracts) | ||
| ]; | ||
|
|
||
| const isDocumentValid = ( | ||
| hash: ResolveType<typeof verifyHash>, | ||
| issued: ResolveType<typeof verifyIssued>, | ||
| revoked: ResolveType<typeof verifyRevoked> | ||
| ) => hash.checksumMatch && issued.issuedOnAll && !revoked.revokedOnAny; | ||
|
|
||
| /** | ||
| * @param {object} document Entire document object to be validated | ||
| * @param {string} network Network to check against, defaults to "homestead". Other valid choices: "ropsten", "kovan", etc | ||
| * @returns | ||
| */ | ||
| export const verify = async ( | ||
| document: SignedDocument, | ||
| network = "homestead" | ||
| ) => { | ||
| const smartContracts = documentToSmartContracts(document, network); | ||
| const checks = getAllChecks(document, smartContracts); | ||
| const [hash, issued, revoked] = await Promise.all(checks); | ||
|
|
||
| return { | ||
| hash, | ||
| issued, | ||
| revoked, | ||
| valid: isDocumentValid(hash, issued, revoked) | ||
| }; | ||
| const defaultVerificationManager = verificationManager(defaultVerifiers); | ||
|
|
||
| export { | ||
| verificationManager, | ||
| openAttestationEthereumDocumentStoreIssued, | ||
| openAttestationDnsTxtIdentity, | ||
| openAttestationTamperCheck, | ||
| openAttestationEthereumDocumentStoreRevoked, | ||
| defaultVerifiers, | ||
| defaultVerificationManager | ||
| }; | ||
|
|
||
| /** | ||
| * @param {object} document Entire document object to be validated | ||
| * @param {string} network Network to check against, defaults to "homestead". Other valid choices: "ropsten", "kovan", etc | ||
| * @returns {array} Array of promises, each promise corresponds to a verification check. | ||
| * The last promise resolves to the overall validity based on all the checks. | ||
| */ | ||
| export const verifyWithIndividualChecks = ( | ||
| document: SignedDocument, | ||
| network = "homestead" | ||
| ): VerificationChecksWithValidity => { | ||
| const smartContracts = documentToSmartContracts(document, network); | ||
| const [hash, issued, revoked] = getAllChecks(document, smartContracts); | ||
|
|
||
| // If any of the checks are invalid, resolve the overall validity early | ||
| const valid = Promise.all([ | ||
| new Promise(async (resolve, reject) => | ||
| (await hash).checksumMatch ? resolve() : reject() | ||
| ), | ||
| new Promise(async (resolve, reject) => | ||
| (await issued).issuedOnAll ? resolve() : reject() | ||
| ), | ||
| new Promise(async (resolve, reject) => | ||
| (await revoked).revokedOnAny ? reject() : resolve() | ||
| ) | ||
| ]) | ||
| .then(() => true) | ||
| .catch(() => false); | ||
|
|
||
| return [hash, issued, revoked, valid]; | ||
| }; | ||
|
|
||
| export default verify; // backward compatible |
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