static CustomErrors()
{
_errors = new Hashtable();
CustomErrorsSection section = (CustomErrorsSection)WebConfigurationManager.GetSection("system.web/customErrors");
_mode = section.Mode;
_redirectMode = section.RedirectMode;
_defaultRedirect = section.DefaultRedirect;
foreach (CustomError e in section.Errors)
{
if (!string.IsNullOrEmpty(e.Redirect))
{
_errors.Add(e.StatusCode, e.Redirect);
}
}
_ips = Dns.GetHostAddresses("localhost");
}
public void UpdateSection(
CustomErrorsMode mode,
CustomErrorsRedirectMode redirectMode,
CustomErrorsRedirectType notFoundErrorRedirect,
CustomErrorsRedirectType forbiddenErrorRedirect,
CustomErrorsRedirectType serverErrorRedirect)
{
Mode = mode;
RedirectMode = redirectMode;
NotFoundErrorRedirect = notFoundErrorRedirect;
ForbiddenErrorRedirect = forbiddenErrorRedirect;
ServerErrorRedirect = serverErrorRedirect;
_customErrorsSection.Mode = Mode.ToSystemCustomErrorsMode();
_customErrorsSection.RedirectMode = RedirectMode.ToSystemCustomErrorsRedirectMode();
SetCustomErrorsSectionErrors(
_notFoundError.CreateCustomError(NotFoundErrorRedirect),
_forbiddenError.CreateCustomError(ForbiddenErrorRedirect),
_serverError.CreateCustomError(ServerErrorRedirect));
}
internal bool RedirectToErrorPage(string url, CustomErrorsRedirectMode redirectMode)
{
try
{
if (string.IsNullOrEmpty(url))
{
return false;
}
if (this._headersWritten)
{
return false;
}
if (this.Request.QueryString["aspxerrorpath"] != null)
{
return false;
}
if (redirectMode == CustomErrorsRedirectMode.ResponseRewrite)
{
this.Context.Server.Execute(url);
}
else
{
if (url.IndexOf('?') < 0)
{
url = url + "?aspxerrorpath=" + HttpEncoderUtility.UrlEncodeSpaces(this.Request.Path);
}
this.Redirect(url, false);
}
}
catch
{
return false;
}
return true;
}
//
// Redirect to error page appending ?aspxerrorpath if no query string in the url.
// Fails to redirect if request is already for error page.
// Suppresses all errors.
// See comments on RedirectToErrorPageStatus type for meaning of return values.
//
internal RedirectToErrorPageStatus RedirectToErrorPage(String url, CustomErrorsRedirectMode redirectMode) {
const String qsErrorMark = "aspxerrorpath";
try {
if (String.IsNullOrEmpty(url))
return RedirectToErrorPageStatus.NotAttempted; // nowhere to redirect
if (_headersWritten)
return RedirectToErrorPageStatus.NotAttempted;
if (Request.QueryString[qsErrorMark] != null)
return RedirectToErrorPageStatus.Failed; // already in error redirect
if (redirectMode == CustomErrorsRedirectMode.ResponseRewrite) {
Context.Server.Execute(url);
}
else {
// append query string
if (url.IndexOf('?') < 0)
url = url + "?" + qsErrorMark + "=" + HttpEncoderUtility.UrlEncodeSpaces(Request.Path);
// redirect without response.end
Redirect(url, false /*endResponse*/);
}
}
catch {
return RedirectToErrorPageStatus.Failed;
}
return RedirectToErrorPageStatus.Success;
}
