initial commit. phase 1 complete

frontend/node_modules/openid-client/lib/helpers/process_response.js

@@ -0,0 +1,71 @@
+const { STATUS_CODES } = require('http');
+const { format } = require('util');
+
+const { OPError } = require('../errors');
+const parseWwwAuthenticate = require('./www_authenticate_parser');
+
+const throwAuthenticateErrors = (response) => {
+  const params = parseWwwAuthenticate(response.headers['www-authenticate']);
+
+  if (params.error) {
+    throw new OPError(params, response);
+  }
+};
+
+const isStandardBodyError = (response) => {
+  let result = false;
+  try {
+    let jsonbody;
+    if (typeof response.body !== 'object' || Buffer.isBuffer(response.body)) {
+      jsonbody = JSON.parse(response.body);
+    } else {
+      jsonbody = response.body;
+    }
+    result = typeof jsonbody.error === 'string' && jsonbody.error.length;
+    if (result) Object.defineProperty(response, 'body', { value: jsonbody, configurable: true });
+  } catch (err) {}
+
+  return result;
+};
+
+function processResponse(response, { statusCode = 200, body = true, bearer = false } = {}) {
+  if (response.statusCode !== statusCode) {
+    if (bearer) {
+      throwAuthenticateErrors(response);
+    }
+
+    if (isStandardBodyError(response)) {
+      throw new OPError(response.body, response);
+    }
+
+    throw new OPError(
+      {
+        error: format(
+          'expected %i %s, got: %i %s',
+          statusCode,
+          STATUS_CODES[statusCode],
+          response.statusCode,
+          STATUS_CODES[response.statusCode],
+        ),
+      },
+      response,
+    );
+  }
+
+  if (body && !response.body) {
+    throw new OPError(
+      {
+        error: format(
+          'expected %i %s with body but no body was returned',
+          statusCode,
+          STATUS_CODES[statusCode],
+        ),
+      },
+      response,
+    );
+  }
+
+  return response.body;
+}
+
+module.exports = processResponse;