Program: 42895
Project: 42895
Buggy source:
private void validateParametersAndFallbackIfNeeded(RegisterSiteParams params){
  SiteConfiguration fallback=getSiteService().defaultSiteConfiguration();
  if (Strings.isNullOrEmpty(params.getOpHost())) {
    LOG.warn("String_Node_Str" + params + "String_Node_Str"+ SiteConfigurationService.DEFAULT_SITE_CONFIG_JSON+ "String_Node_Str");
    String fallbackOpHost=fallback.getOpHost();
    if (Strings.isNullOrEmpty(fallbackOpHost)) {
      throw new ErrorResponseException(ErrorResponseCode.INVALID_OP_HOST);
    }
    LOG.warn("String_Node_Str" + fallbackOpHost + "String_Node_Str"+ SiteConfigurationService.DEFAULT_SITE_CONFIG_JSON);
    params.setOpHost(fallbackOpHost);
  }
  List<String> grantTypes=Lists.newArrayList();
  if (params.getGrantType() != null && !params.getGrantType().isEmpty()) {
    grantTypes.addAll(params.getGrantType());
  }
  if (grantTypes.isEmpty() && fallback.getGrantType() != null && !fallback.getGrantType().isEmpty()) {
    grantTypes.addAll(fallback.getGrantType());
  }
  if (grantTypes.isEmpty()) {
    grantTypes.add(GrantType.AUTHORIZATION_CODE.getValue());
  }
  params.setGrantType(grantTypes);
  if (Strings.isNullOrEmpty(params.getAuthorizationRedirectUri())) {
    params.setAuthorizationRedirectUri(fallback.getAuthorizationRedirectUri());
  }
  if (Strings.isNullOrEmpty(params.getAuthorizationRedirectUri())) {
    throw new ErrorResponseException(ErrorResponseCode.INVALID_AUTHORIZATION_REDIRECT_URI);
  }
  if (Strings.isNullOrEmpty(params.getPostLogoutRedirectUri()) && !Strings.isNullOrEmpty(fallback.getPostLogoutRedirectUri())) {
    params.setPostLogoutRedirectUri(fallback.getPostLogoutRedirectUri());
  }
  List<String> responseTypes=Lists.newArrayList();
  if (params.getResponseTypes() != null && !params.getResponseTypes().isEmpty()) {
    responseTypes.addAll(params.getResponseTypes());
  }
  if (responseTypes.isEmpty() && fallback.getResponseTypes() != null && !fallback.getResponseTypes().isEmpty()) {
    responseTypes.addAll(fallback.getResponseTypes());
  }
  if (responseTypes.isEmpty()) {
    responseTypes.add("String_Node_Str");
  }
  params.setResponseTypes(responseTypes);
  Set<String> redirectUris=Sets.newHashSet();
  redirectUris.add(params.getAuthorizationRedirectUri());
  if (params.getRedirectUris() != null && !params.getRedirectUris().isEmpty()) {
    redirectUris.addAll(params.getRedirectUris());
    if (!Strings.isNullOrEmpty(params.getPostLogoutRedirectUri())) {
      redirectUris.add(params.getPostLogoutRedirectUri());
    }
  }
  params.setRedirectUris(Lists.newArrayList(redirectUris));
  if (params.getScope() == null || params.getScope().isEmpty()) {
    params.setScope(fallback.getScope());
  }
  if (params.getScope() == null || params.getScope().isEmpty()) {
    throw new ErrorResponseException(ErrorResponseCode.INVALID_SCOPE);
  }
  if (params.getAcrValues() == null || params.getAcrValues().isEmpty()) {
    params.setAcrValues(fallback.getAcrValues());
  }
  if (params.getAcrValues() == null || params.getAcrValues().isEmpty()) {
    throw new ErrorResponseException(ErrorResponseCode.INVALID_ACR_VALUES);
  }
  if (Strings.isNullOrEmpty(params.getClientJwksUri()) && !Strings.isNullOrEmpty(fallback.getClientJwksUri())) {
    params.setClientJwksUri(fallback.getClientJwksUri());
  }
  if (params.getContacts() == null || params.getContacts().isEmpty()) {
    params.setContacts(fallback.getContacts());
  }
  if (params.getUiLocales() == null || params.getUiLocales().isEmpty()) {
    params.setUiLocales(fallback.getUiLocales());
  }
  if (params.getClaimsLocales() == null || params.getClaimsLocales().isEmpty()) {
    params.setClaimsLocales(fallback.getClaimsLocales());
  }
}

Fixed version (ground truth):
private void validateParametersAndFallbackIfNeeded(RegisterSiteParams params){
  SiteConfiguration fallback=getSiteService().defaultSiteConfiguration();
  if (Strings.isNullOrEmpty(params.getOpHost())) {
    LOG.warn("String_Node_Str" + params + "String_Node_Str"+ SiteConfigurationService.DEFAULT_SITE_CONFIG_JSON+ "String_Node_Str");
    String fallbackOpHost=fallback.getOpHost();
    if (Strings.isNullOrEmpty(fallbackOpHost)) {
      throw new ErrorResponseException(ErrorResponseCode.INVALID_OP_HOST);
    }
    LOG.warn("String_Node_Str" + fallbackOpHost + "String_Node_Str"+ SiteConfigurationService.DEFAULT_SITE_CONFIG_JSON);
    params.setOpHost(fallbackOpHost);
  }
  List<String> grantTypes=Lists.newArrayList();
  if (params.getGrantType() != null && !params.getGrantType().isEmpty()) {
    grantTypes.addAll(params.getGrantType());
  }
  if (grantTypes.isEmpty() && fallback.getGrantType() != null && !fallback.getGrantType().isEmpty()) {
    grantTypes.addAll(fallback.getGrantType());
  }
  if (grantTypes.isEmpty()) {
    grantTypes.add(GrantType.AUTHORIZATION_CODE.getValue());
  }
  params.setGrantType(grantTypes);
  if (Strings.isNullOrEmpty(params.getAuthorizationRedirectUri())) {
    params.setAuthorizationRedirectUri(fallback.getAuthorizationRedirectUri());
  }
  if (Strings.isNullOrEmpty(params.getAuthorizationRedirectUri())) {
    throw new ErrorResponseException(ErrorResponseCode.INVALID_AUTHORIZATION_REDIRECT_URI);
  }
  if (Strings.isNullOrEmpty(params.getPostLogoutRedirectUri()) && !Strings.isNullOrEmpty(fallback.getPostLogoutRedirectUri())) {
    params.setPostLogoutRedirectUri(fallback.getPostLogoutRedirectUri());
  }
  List<String> responseTypes=Lists.newArrayList();
  if (params.getResponseTypes() != null && !params.getResponseTypes().isEmpty()) {
    responseTypes.addAll(params.getResponseTypes());
  }
  if (responseTypes.isEmpty() && fallback.getResponseTypes() != null && !fallback.getResponseTypes().isEmpty()) {
    responseTypes.addAll(fallback.getResponseTypes());
  }
  if (responseTypes.isEmpty()) {
    responseTypes.add("String_Node_Str");
  }
  params.setResponseTypes(responseTypes);
  Set<String> redirectUris=Sets.newHashSet();
  redirectUris.add(params.getAuthorizationRedirectUri());
  if (params.getRedirectUris() != null && !params.getRedirectUris().isEmpty()) {
    redirectUris.addAll(params.getRedirectUris());
    if (!Strings.isNullOrEmpty(params.getPostLogoutRedirectUri())) {
      redirectUris.add(params.getPostLogoutRedirectUri());
    }
  }
  params.setRedirectUris(Lists.newArrayList(redirectUris));
  if (params.getScope() == null || params.getScope().isEmpty()) {
    params.setScope(fallback.getScope());
  }
  if (params.getScope() == null || params.getScope().isEmpty()) {
    throw new ErrorResponseException(ErrorResponseCode.INVALID_SCOPE);
  }
  if (params.getAcrValues() == null || params.getAcrValues().isEmpty()) {
    params.setAcrValues(fallback.getAcrValues());
  }
  if (Strings.isNullOrEmpty(params.getClientJwksUri()) && !Strings.isNullOrEmpty(fallback.getClientJwksUri())) {
    params.setClientJwksUri(fallback.getClientJwksUri());
  }
  if (params.getContacts() == null || params.getContacts().isEmpty()) {
    params.setContacts(fallback.getContacts());
  }
  if (params.getUiLocales() == null || params.getUiLocales().isEmpty()) {
    params.setUiLocales(fallback.getUiLocales());
  }
  if (params.getClaimsLocales() == null || params.getClaimsLocales().isEmpty()) {
    params.setClaimsLocales(fallback.getClaimsLocales());
  }
}