40 lines
988 B
TypeScript
40 lines
988 B
TypeScript
import xml2js from "xml2js";
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import { promisify } from "util";
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import { inflateRaw } from "zlib";
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const inflateRawAsync = promisify(inflateRaw);
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// Parse XML
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const parseXML = (xml: string): Promise<Record<string, any>> => {
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return new Promise((resolve, reject) => {
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xml2js.parseString(xml, (err: Error, result: any) => {
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if(err) {
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reject(err);
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}
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resolve(result);
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});
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});
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};
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// Parse SAMLRequest attributes
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const extractSAMLRequestAttributes = async (samlRequest: string) => {
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const request = (
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await inflateRawAsync(Buffer.from(samlRequest, "base64"))
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).toString();
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const result = await parseXML(request);
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const attributes = result["samlp:AuthnRequest"]["$"];
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const issuer = result["samlp:AuthnRequest"]["saml:Issuer"];
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return {
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id: attributes.ID,
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acsUrl: attributes.AssertionConsumerServiceURL,
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providerName: attributes.ProviderName,
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audience: issuer[0]["_"],
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};
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};
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export {
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extractSAMLRequestAttributes,
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} |