@azure/identity/dist/commonjs/credentials/clientCertificateCredential.js

Provides credential implementations for Azure SDK libraries that can authenticate with Microsoft Entra ID

var __defProp = Object.defineProperty;
var __getOwnPropDesc = Object.getOwnPropertyDescriptor;
var __getOwnPropNames = Object.getOwnPropertyNames;
var __hasOwnProp = Object.prototype.hasOwnProperty;
var __export = (target, all) => {
  for (var name in all)
    __defProp(target, name, { get: all[name], enumerable: true });
};
var __copyProps = (to, from, except, desc) => {
  if (from && typeof from === "object" || typeof from === "function") {
    for (let key of __getOwnPropNames(from))
      if (!__hasOwnProp.call(to, key) && key !== except)
        __defProp(to, key, { get: () => from[key], enumerable: !(desc = __getOwnPropDesc(from, key)) || desc.enumerable });
  }
  return to;
};
var __toCommonJS = (mod) => __copyProps(__defProp({}, "__esModule", { value: true }), mod);
var clientCertificateCredential_exports = {};
__export(clientCertificateCredential_exports, {
  ClientCertificateCredential: () => ClientCertificateCredential,
  parseCertificate: () => parseCertificate
});
module.exports = __toCommonJS(clientCertificateCredential_exports);
var import_msalClient = require("../msal/nodeFlows/msalClient.js");
var import_node_crypto = require("node:crypto");
var import_tenantIdUtils = require("../util/tenantIdUtils.js");
var import_logging = require("../util/logging.js");
var import_promises = require("node:fs/promises");
var import_tracing = require("../util/tracing.js");
const credentialName = "ClientCertificateCredential";
const logger = (0, import_logging.credentialLogger)(credentialName);
class ClientCertificateCredential {
  tenantId;
  additionallyAllowedTenantIds;
  certificateConfiguration;
  sendCertificateChain;
  msalClient;
  constructor(tenantId, clientId, certificatePathOrConfiguration, options = {}) {
    if (!tenantId || !clientId) {
      throw new Error(`${credentialName}: tenantId and clientId are required parameters.`);
    }
    this.tenantId = tenantId;
    this.additionallyAllowedTenantIds = (0, import_tenantIdUtils.resolveAdditionallyAllowedTenantIds)(
      options?.additionallyAllowedTenants
    );
    this.sendCertificateChain = options.sendCertificateChain;
    this.certificateConfiguration = {
      ...typeof certificatePathOrConfiguration === "string" ? {
        certificatePath: certificatePathOrConfiguration
      } : certificatePathOrConfiguration
    };
    const certificate = this.certificateConfiguration.certificate;
    const certificatePath = this.certificateConfiguration.certificatePath;
    if (!this.certificateConfiguration || !(certificate || certificatePath)) {
      throw new Error(
        `${credentialName}: Provide either a PEM certificate in string form, or the path to that certificate in the filesystem. To troubleshoot, visit https://aka.ms/azsdk/js/identity/serviceprincipalauthentication/troubleshoot.`
      );
    }
    if (certificate && certificatePath) {
      throw new Error(
        `${credentialName}: To avoid unexpected behaviors, providing both the contents of a PEM certificate and the path to a PEM certificate is forbidden. To troubleshoot, visit https://aka.ms/azsdk/js/identity/serviceprincipalauthentication/troubleshoot.`
      );
    }
    this.msalClient = (0, import_msalClient.createMsalClient)(clientId, tenantId, {
      ...options,
      logger,
      tokenCredentialOptions: options
    });
  }
  /**
   * Authenticates with Microsoft Entra ID and returns an access token if successful.
   * If authentication fails, a {@link CredentialUnavailableError} will be thrown with the details of the failure.
   *
   * @param scopes - The list of scopes for which the token will have access.
   * @param options - The options used to configure any requests this
   *                TokenCredential implementation might make.
   */
  async getToken(scopes, options = {}) {
    return import_tracing.tracingClient.withSpan(`${credentialName}.getToken`, options, async (newOptions) => {
      newOptions.tenantId = (0, import_tenantIdUtils.processMultiTenantRequest)(
        this.tenantId,
        newOptions,
        this.additionallyAllowedTenantIds,
        logger
      );
      const arrayScopes = Array.isArray(scopes) ? scopes : [scopes];
      const certificate = await this.buildClientCertificate();
      return this.msalClient.getTokenByClientCertificate(arrayScopes, certificate, newOptions);
    });
  }
  async buildClientCertificate() {
    const parts = await parseCertificate(
      this.certificateConfiguration,
      this.sendCertificateChain ?? false
    );
    let privateKey;
    if (this.certificateConfiguration.certificatePassword !== void 0) {
      privateKey = (0, import_node_crypto.createPrivateKey)({
        key: parts.certificateContents,
        passphrase: this.certificateConfiguration.certificatePassword,
        format: "pem"
      }).export({
        format: "pem",
        type: "pkcs8"
      }).toString();
    } else {
      privateKey = parts.certificateContents;
    }
    return {
      thumbprint: parts.thumbprint,
      thumbprintSha256: parts.thumbprintSha256,
      privateKey,
      x5c: parts.x5c
    };
  }
}
async function parseCertificate(certificateConfiguration, sendCertificateChain) {
  const certificate = certificateConfiguration.certificate;
  const certificatePath = certificateConfiguration.certificatePath;
  const certificateContents = certificate || await (0, import_promises.readFile)(certificatePath, "utf8");
  const x5c = sendCertificateChain ? certificateContents : void 0;
  const certificatePattern = /(-+BEGIN CERTIFICATE-+)(\n\r?|\r\n?)([A-Za-z0-9+/\n\r]+=*)(\n\r?|\r\n?)(-+END CERTIFICATE-+)/g;
  const publicKeys = [];
  let match;
  do {
    match = certificatePattern.exec(certificateContents);
    if (match) {
      publicKeys.push(match[3]);
    }
  } while (match);
  if (publicKeys.length === 0) {
    throw new Error("The file at the specified path does not contain a PEM-encoded certificate.");
  }
  const thumbprint = (0, import_node_crypto.createHash)("sha1").update(Buffer.from(publicKeys[0], "base64")).digest("hex").toUpperCase();
  const thumbprintSha256 = (0, import_node_crypto.createHash)("sha256").update(Buffer.from(publicKeys[0], "base64")).digest("hex").toUpperCase();
  return {
    certificateContents,
    thumbprintSha256,
    thumbprint,
    x5c
  };
}
// Annotate the CommonJS export names for ESM import in node:
0 && (module.exports = {
  ClientCertificateCredential,
  parseCertificate
});
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