Method create

src/http.cpp:640–673

namespace header {

Try<WWWAuthenticate> WWWAuthenticate::create(const string& value)
{
  // Set `maxTokens` as 2 since auth-param quoted string may
  // contain space (e.g., "Basic realm="Registry Realm").
  vector<string> tokens = strings::tokenize(value, " ", 2);
  if (tokens.size() != 2) {
    return Error("Unexpected WWW-Authenticate header format: '" + value + "'");
  }

  hashmap<string, string> authParam;
  foreach (const string& token, strings::split(tokens[1], ",")) {
    vector<string> split = strings::split(token, "=");
    if (split.size() != 2) {
      return Error(
          "Unexpected auth-param format: '" +
          token + "' in '" + tokens[1] + "'");
    }

    // Auth-param values can be a quoted-string or directive values.
    // Please see section "3.2.2.4 Directive values and quoted-string":
    // https://tools.ietf.org/html/rfc2617.
    authParam[split[0]] = strings::trim(split[1], strings::ANY, "\"");
  }

  // The realm directive (case-insensitive) is required for all
  // authentication schemes that issue a challenge.
  if (!authParam.contains("realm")) {
    return Error(
        "Unexpected auth-param '" +
        tokens[1] + "': 'realm' is not defined");
  }

  return WWWAuthenticate(tokens[0], authParam);
}


string WWWAuthenticate::authScheme()