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Signed-off-by: F-Node-Karlsruhe <christian.fries@eecc.de>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,76 +1,82 @@ | ||
| // @ts-ignore | ||
| import jsonldSignatures from 'jsonld-signatures'; | ||
| import { getResolver } from './didresolver.js'; | ||
| import { fetch_jsonld, fetchIPFS } from '../fetch/index.js'; | ||
| import { contexts } from './context/index.js'; | ||
| import jsonldSignatures from "jsonld-signatures"; | ||
| import { getResolver } from "./didresolver.js"; | ||
| import { fetch_jsonld, fetchIPFS } from "../fetch/index.js"; | ||
| import { contexts } from "./context/index.js"; | ||
|
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| const cache = contexts; | ||
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| const uncachedStatusListCredentialTypes = ['RevocationList2020Credential', 'StatusList2021Credential'] | ||
|
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| const documentLoader: Promise<any> = jsonldSignatures.extendContextLoader(async (url: string) => { | ||
| const uncachedStatusListCredentialTypes = [ | ||
| "RevocationList2020Credential", | ||
| "StatusList2021Credential", | ||
| ]; | ||
|
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| const documentLoader: (url: string) => Promise<any> = | ||
| jsonldSignatures.extendContextLoader(async (url: string) => { | ||
| // Fetch did documents | ||
| if (url.startsWith('did:')) { | ||
|
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| const [did, verificationMethod] = url.split('#') | ||
|
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| // fetch document | ||
| const didDocument: any = (await getResolver().resolve(url)).didDocument | ||
|
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| // if a verifcation method of the DID document is queried (not yet implemented in the official resolver) | ||
| if (verificationMethod && didDocument) { | ||
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| const verificationMethodDoc: any | undefined = didDocument.verificationMethod.filter(function (method: any) { | ||
| return method.id === url || method.id === verificationMethod; | ||
| })[0]; | ||
|
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| if (!verificationMethodDoc) | ||
| throw new jsonldSignatures.VerificationError( | ||
| new Error(`${verificationMethod} is an unknown verification method for ${did}`) | ||
| ); | ||
|
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| return { | ||
| contextUrl: null, | ||
| documentUrl: url, | ||
| // deliver verification method with the DID doc context | ||
| document: Object.assign(verificationMethodDoc, { '@context': verificationMethodDoc['@context'] || didDocument['@context'] }), | ||
| }; | ||
|
|
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| } | ||
| if (url.startsWith("did:")) { | ||
| const [did, verificationMethod] = url.split("#"); | ||
|
|
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| // fetch document | ||
| const didDocument: any = (await getResolver().resolve(url)).didDocument; | ||
|
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| // if a verifcation method of the DID document is queried (not yet implemented in the official resolver) | ||
| if (verificationMethod && didDocument) { | ||
| const verificationMethodDoc: any | undefined = | ||
| didDocument.verificationMethod.filter(function (method: any) { | ||
| return method.id === url || method.id === verificationMethod; | ||
| })[0]; | ||
|
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| if (!verificationMethodDoc) | ||
| throw new jsonldSignatures.VerificationError( | ||
| new Error( | ||
| `${verificationMethod} is an unknown verification method for ${did}` | ||
| ) | ||
| ); | ||
|
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| return { | ||
| contextUrl: null, | ||
| documentUrl: url, | ||
| document: didDocument, | ||
| contextUrl: null, | ||
| documentUrl: url, | ||
| // deliver verification method with the DID doc context | ||
| document: Object.assign(verificationMethodDoc, { | ||
| "@context": | ||
| verificationMethodDoc["@context"] || didDocument["@context"], | ||
| }), | ||
| }; | ||
| } | ||
|
|
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| return { | ||
| contextUrl: null, | ||
| documentUrl: url, | ||
| document: didDocument, | ||
| }; | ||
| } | ||
|
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| let document = cache.get(url); | ||
|
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| // fetch if not in cache | ||
| if (!document) { | ||
|
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| if (url.startsWith('ipfs://')) { | ||
|
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| document = await fetchIPFS(url); | ||
|
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| } else { | ||
|
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| document = await fetch_jsonld(url); | ||
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| } | ||
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| if (!document.type || !Array.isArray(document.type) || !uncachedStatusListCredentialTypes.some((t: string) => document.type.includes(t))) cache.set(url, document); | ||
|
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| if (url.startsWith("ipfs://")) { | ||
| document = await fetchIPFS(url); | ||
| } else { | ||
| document = await fetch_jsonld(url); | ||
| } | ||
|
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| if ( | ||
| !document.type || | ||
| !Array.isArray(document.type) || | ||
| !uncachedStatusListCredentialTypes.some((t: string) => | ||
| document.type.includes(t) | ||
| ) | ||
| ) | ||
| cache.set(url, document); | ||
| } | ||
|
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| return { | ||
| contextUrl: null, | ||
| documentUrl: url, | ||
| document: document, | ||
| contextUrl: null, | ||
| documentUrl: url, | ||
| document: document, | ||
| }; | ||
| }); | ||
|
|
||
| }); | ||
|
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| export { documentLoader } | ||
| export { documentLoader }; |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,60 @@ | ||
| import { | ||
| checkGS1CredentialPresentation, | ||
| checkGS1CredentialWithoutPresentation, | ||
| externalCredential, | ||
| verifyExternalCredential, | ||
| gs1RulesResult, | ||
| gs1RulesResultContainer, | ||
| verificationErrorCode, | ||
| VerifiableCredential, | ||
| VerifiablePresentation, | ||
| // @ts-ignore | ||
| } from "@gs1us/vc-verifier-rules"; | ||
|
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| import { documentLoader } from "../documentLoader/index.js"; | ||
|
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| export const gs1CredentialTypes = [ | ||
| "OrganizationDataCredential", | ||
| "KeyCredential", | ||
| "ProductDataCredential", | ||
| ]; | ||
|
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| export const gs1CredentialContext = | ||
| "https://ref.gs1.org/gs1/vc/license-context"; | ||
|
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| export function isGs1Credential(credential: VerifiableCredential): boolean { | ||
| return ( | ||
| credential["@context"].includes(gs1CredentialContext) && | ||
| credential.type.some((type: string) => gs1CredentialTypes.includes(type)) | ||
| ); | ||
| } | ||
|
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| const getExternalCredential: externalCredential = async ( | ||
| url: string | ||
| ): Promise<VerifiableCredential> => { | ||
| const extendedVC = await documentLoader(url); | ||
| return extendedVC.document; | ||
| }; | ||
|
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| export async function checkGS1Credential( | ||
| verifiableCredential: VerifiableCredential, | ||
| checkExternalCredential: verifyExternalCredential | ||
| ): Promise<gs1RulesResult> { | ||
| return await checkGS1CredentialWithoutPresentation( | ||
| getExternalCredential, | ||
| checkExternalCredential, | ||
| verifiableCredential | ||
| ); | ||
| } | ||
|
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| // Check if the Verifiable Presentation for any GS1 Credential and if so check the GS1 Credential Rules | ||
| export async function verifyGS1Credentials( | ||
| verifiablePresentation: VerifiablePresentation, | ||
| checkExternalCredential: verifyExternalCredential | ||
| ): Promise<gs1RulesResultContainer> { | ||
| return await checkGS1CredentialPresentation( | ||
| getExternalCredential, | ||
| checkExternalCredential, | ||
| verifiablePresentation | ||
| ); | ||
| } |
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