// Must load the value of the fragment and store it in the values collection
public virtual void Init(ExceptionPageTemplateValues values)
{
if (values == null)
{
throw new ArgumentNullException("values");
}
string tmp = Value;
if (tmp != null)
{
values.Add(Name, tmp);
return;
}
tmp = FilePath;
if (!String.IsNullOrEmpty(tmp))
{
values.Add(Name, LoadFile(tmp));
return;
}
tmp = ResourceName;
if (!String.IsNullOrEmpty(tmp))
{
values.Add(Name, LoadResource(tmp));
return;
}
}
void Render(ExceptionPageTemplateValues values, ExceptionPageTemplateType pageType, Action <string> writer)
{
if (fragments == null || fragments.Count == 0 || values.Count == 0)
{
return;
}
InitFragments(values);
string value;
foreach (ExceptionPageTemplateFragment fragment in fragments)
{
if (fragment == null || (fragment.ValidForPageType & pageType) == 0)
{
continue;
}
value = values.Get(fragment.Name);
if (value == null || !fragment.Visible(values))
{
continue;
}
writer(fragment.ReplaceMacros(value, values));
}
}
void FillDefaultCustomErrorValues(ExceptionPageTemplateValues values)
{
values.Add(ExceptionPageTemplate.Template_PageTitleName, "Runtime Error");
values.Add(ExceptionPageTemplate.Template_ExceptionTypeName, "Runtime Error");
values.Add(ExceptionPageTemplate.Template_ExceptionMessageName, "A runtime error has occurred");
values.Add(ExceptionPageTemplate.Template_DescriptionName, "An application error occurred on the server. The current custom error settings for this application prevent the details of the application error from being viewed (for security reasons).");
values.Add(ExceptionPageTemplate.Template_DetailsName, "To enable the details of this specific error message to be viewable, please create a <customErrors> tag within a "web.config" configuration file located in the root directory of the current web application. This <customErrors> tag should then have its "mode" attribute set to "Off".");
}
void InitFragments (ExceptionPageTemplateValues values)
{
foreach (ExceptionPageTemplateFragment fragment in fragments) {
if (fragment == null)
continue;
fragment.Init (values);
}
}
public string Render (ExceptionPageTemplateValues values, ExceptionPageTemplateType pageType)
{
if (values == null)
throw new ArgumentNullException ("values");
var sb = new StringBuilder ();
Render (values, pageType, (string text) => {
sb.Append (text);
});
return sb.ToString ();
}
void InitFragments(ExceptionPageTemplateValues values)
{
foreach (ExceptionPageTemplateFragment fragment in fragments)
{
if (fragment == null)
{
continue;
}
fragment.Init(values);
}
}
public string Render(ExceptionPageTemplateValues values, ExceptionPageTemplateType pageType)
{
if (values == null)
{
throw new ArgumentNullException("values");
}
var sb = new StringBuilder();
Render(values, pageType, (string text) => {
sb.Append(text);
});
return(sb.ToString());
}
public void Render(HttpResponse response, ExceptionPageTemplateValues values, ExceptionPageTemplateType pageType)
{
if (response == null)
{
return;
}
if (values == null)
{
throw new ArgumentNullException("values");
}
Render(values, pageType, (string text) => {
response.Write(text);
});
}
public string ReplaceMacros(string value, ExceptionPageTemplateValues values)
{
if (String.IsNullOrEmpty(value))
{
return(value);
}
if (values == null)
{
throw new ArgumentNullException("values");
}
List <string> macroNames = MacroNames;
if (macroNames == null || macroNames.Count == 0)
{
return(value);
}
var sb = new StringBuilder(value);
string macroValue;
foreach (string macro in macroNames)
{
if (String.IsNullOrEmpty(macro))
{
continue;
}
macroValue = values.Get(macro);
if (macroValue == null)
{
macroValue = String.Empty;
}
sb.Replace("@" + macro + "@", macroValue);
}
return(sb.ToString());
}
public virtual bool Visible(ExceptionPageTemplateValues values)
{
List <string> required = RequiredMacros;
if (required == null || required.Count == 0)
{
return(true);
}
if (values == null || values.Count == 0)
{
return(false);
}
foreach (string macro in required)
{
if (values.Get(macro) == null)
{
return(false);
}
}
return(true);
}
void FillDefaultErrorValues (bool showTrace, bool showExceptionType, Exception baseEx, ExceptionPageTemplateValues values)
{
if (baseEx == null)
baseEx = this;
values.Add (ExceptionPageTemplate.Template_PageTitleName, String.Format ("Error{0}", http_code != 0 ? " " + http_code : String.Empty));
values.Add (ExceptionPageTemplate.Template_ExceptionTypeName, showExceptionType ? baseEx.GetType ().ToString () : "Runtime error");
values.Add (ExceptionPageTemplate.Template_ExceptionMessageName, http_code == 404 ? "The resource cannot be found." : HtmlEncode (baseEx.Message));
string tmp = http_code != 0 ? "HTTP " + http_code + "." : String.Empty;
values.Add (ExceptionPageTemplate.Template_DescriptionName, tmp + (http_code == 404 ? ERROR_404_DESCRIPTION : HtmlEncode (Description)));
if (!String.IsNullOrEmpty (resource_name))
values.Add (ExceptionPageTemplate.Template_DetailsName, "Requested URL: " + HtmlEncode (resource_name));
else if (http_code == 404)
values.Add (ExceptionPageTemplate.Template_DetailsName, "No virtual path information available.");
else if (baseEx is HttpException) {
tmp = ((HttpException)baseEx).Description;
values.Add (ExceptionPageTemplate.Template_DetailsName, !String.IsNullOrEmpty (tmp) ? HtmlEncode (tmp) : "Web exception occurred but no additional error description given.");
} else {
var sb = new StringBuilder ("Non-web exception.");
tmp = baseEx.Source;
if (!String.IsNullOrEmpty (tmp))
sb.AppendFormat (" Exception origin (name of application or object): {0}.", HtmlEncode (tmp));
tmp = baseEx.HelpLink;
if (!String.IsNullOrEmpty (tmp))
sb.AppendFormat (" Additional information is available at {0}", HtmlEncode (tmp));
values.Add (ExceptionPageTemplate.Template_DetailsName, sb.ToString ());
}
if (showTrace) {
string stackTrace = baseEx.StackTrace;
if (!String.IsNullOrEmpty (stackTrace))
values.Add (ExceptionPageTemplate.Template_StackTraceName, HtmlEncode (stackTrace));
}
}
void FillDefaultErrorValues(bool showTrace, bool showExceptionType, Exception baseEx, ExceptionPageTemplateValues values)
{
if (baseEx == null)
{
baseEx = this;
}
values.Add(ExceptionPageTemplate.Template_PageTitleName, String.Format("Error{0}", http_code != 0 ? " " + http_code : String.Empty));
values.Add(ExceptionPageTemplate.Template_ExceptionTypeName, showExceptionType ? baseEx.GetType().ToString() : "Runtime error");
values.Add(ExceptionPageTemplate.Template_ExceptionMessageName, http_code == 404 ? "The resource cannot be found." : HtmlEncode(baseEx.Message));
string tmp = http_code != 0 ? "HTTP " + http_code + "." : String.Empty;
values.Add(ExceptionPageTemplate.Template_DescriptionName, tmp + (http_code == 404 ? ERROR_404_DESCRIPTION : HtmlEncode(Description)));
if (!String.IsNullOrEmpty(resource_name))
{
values.Add(ExceptionPageTemplate.Template_DetailsName, "Requested URL: " + HtmlEncode(resource_name));
}
else if (http_code == 404)
{
values.Add(ExceptionPageTemplate.Template_DetailsName, "No virtual path information available.");
}
else if (baseEx is HttpException)
{
tmp = ((HttpException)baseEx).Description;
values.Add(ExceptionPageTemplate.Template_DetailsName, !String.IsNullOrEmpty(tmp) ? HtmlEncode(tmp) : "Web exception occurred but no additional error description given.");
}
else
{
var sb = new StringBuilder("Non-web exception.");
tmp = baseEx.Source;
if (!String.IsNullOrEmpty(tmp))
{
sb.AppendFormat(" Exception origin (name of application or object): {0}.", HtmlEncode(tmp));
}
tmp = baseEx.HelpLink;
if (!String.IsNullOrEmpty(tmp))
{
sb.AppendFormat(" Additional information is available at {0}", HtmlEncode(tmp));
}
values.Add(ExceptionPageTemplate.Template_DetailsName, sb.ToString());
}
if (showTrace)
{
string stackTrace = baseEx.StackTrace;
if (!String.IsNullOrEmpty(stackTrace))
{
values.Add(ExceptionPageTemplate.Template_StackTraceName, HtmlEncode(stackTrace));
}
}
}
void Render (ExceptionPageTemplateValues values, ExceptionPageTemplateType pageType, Action <string> writer)
{
if (fragments == null || fragments.Count == 0 || values.Count == 0)
return;
InitFragments (values);
string value;
foreach (ExceptionPageTemplateFragment fragment in fragments) {
if (fragment == null || (fragment.ValidForPageType & pageType) == 0)
continue;
value = values.Get (fragment.Name);
if (value == null || !fragment.Visible (values))
continue;
writer (fragment.ReplaceMacros (value, values));
}
}
void FillHtmlizedErrorValues(ExceptionPageTemplateValues values, HtmlizedException exc, ref ExceptionPageTemplateType pageType)
{
bool isParseException = exc is ParseException;
bool isCompileException = (!isParseException && exc is CompilationException);
values.Add(ExceptionPageTemplate.Template_PageTitleName, HtmlEncode(exc.Title));
values.Add(ExceptionPageTemplate.Template_DescriptionName, HtmlEncode(exc.Description));
values.Add(ExceptionPageTemplate.Template_StackTraceName, HtmlEncode(exc.StackTrace));
values.Add(ExceptionPageTemplate.Template_ExceptionTypeName, exc.GetType().ToString());
values.Add(ExceptionPageTemplate.Template_ExceptionMessageName, HtmlEncode(exc.Message));
values.Add(ExceptionPageTemplate.Template_DetailsName, HtmlEncode(exc.ErrorMessage));
string origin;
if (isParseException)
{
origin = "Parser";
}
else if (isCompileException)
{
origin = "Compiler";
}
else
{
origin = "Other";
}
values.Add(ExceptionPageTemplate.Template_HtmlizedExceptionOriginName, origin);
if (exc.FileText != null)
{
pageType |= ExceptionPageTemplateType.SourceError;
StringBuilder shortSource = new StringBuilder();
StringBuilder longSource;
if (isCompileException)
{
longSource = new StringBuilder();
}
else
{
longSource = null;
}
FormatSource(shortSource, longSource, exc);
values.Add(ExceptionPageTemplate.Template_HtmlizedExceptionShortSourceName, shortSource.ToString());
values.Add(ExceptionPageTemplate.Template_HtmlizedExceptionLongSourceName, longSource != null ? longSource.ToString() : null);
if (exc.SourceFile != exc.FileName)
{
values.Add(ExceptionPageTemplate.Template_HtmlizedExceptionSourceFileName, FormatSourceFile(exc.SourceFile));
}
else
{
values.Add(ExceptionPageTemplate.Template_HtmlizedExceptionSourceFileName, FormatSourceFile(exc.FileName));
}
if (isParseException || isCompileException)
{
int[] errorLines = exc.ErrorLines;
int numErrors = errorLines != null ? errorLines.Length : 0;
var lines = new StringBuilder();
for (int i = 0; i < numErrors; i++)
{
if (i > 0)
{
lines.Append(", ");
}
lines.Append(errorLines [i]);
}
values.Add(ExceptionPageTemplate.Template_HtmlizedExceptionErrorLinesName, lines.ToString());
}
}
else
{
values.Add(ExceptionPageTemplate.Template_HtmlizedExceptionSourceFileName, FormatSourceFile(exc.FileName));
}
if (isCompileException)
{
CompilationException cex = exc as CompilationException;
StringCollection output = cex.CompilerOutput;
if (output != null && output.Count > 0)
{
pageType |= ExceptionPageTemplateType.CompilerOutput;
var sb = new StringBuilder();
bool first = true;
foreach (string s in output)
{
sb.Append(HtmlEncode(s));
if (first)
{
sb.Append("<br/>");
first = false;
}
sb.Append("<br/>");
}
values.Add(ExceptionPageTemplate.Template_HtmlizedExceptionCompilerOutputName, sb.ToString());
}
}
}
public void Render (HttpResponse response, ExceptionPageTemplateValues values, ExceptionPageTemplateType pageType)
{
if (response == null)
return;
if (values == null)
throw new ArgumentNullException ("values");
Render (values, pageType, (string text) => {
response.Write (text);
});
}
// Must load the value of the fragment and store it in the values collection
public virtual void Init (ExceptionPageTemplateValues values)
{
if (values == null)
throw new ArgumentNullException ("values");
string tmp = Value;
if (tmp != null) {
values.Add (Name, tmp);
return;
}
tmp = FilePath;
if (!String.IsNullOrEmpty (tmp)) {
values.Add (Name, LoadFile (tmp));
return;
}
tmp = ResourceName;
if (!String.IsNullOrEmpty (tmp)) {
values.Add (Name, LoadResource (tmp));
return;
}
}
public string GetHtmlErrorMessage()
{
var values = new ExceptionPageTemplateValues();
ExceptionPageTemplate template = PageTemplate;
try {
values.Add(ExceptionPageTemplate.Template_RuntimeVersionInformationName, RuntimeHelpers.MonoVersion);
values.Add(ExceptionPageTemplate.Template_AspNetVersionInformationName, Environment.Version.ToString());
HttpContext ctx = HttpContext.Current;
ExceptionPageTemplateType pageType = ExceptionPageTemplateType.Standard;
if (ctx != null && ctx.IsCustomErrorEnabled)
{
if (http_code != 404 && http_code != 403)
{
FillDefaultCustomErrorValues(values);
pageType = ExceptionPageTemplateType.CustomErrorDefault;
}
else
{
FillDefaultErrorValues(false, false, null, values);
}
}
else
{
Exception ex = GetBaseException();
if (ex == null)
{
ex = this;
}
values.Add(ExceptionPageTemplate.Template_FullStackTraceName, FormatFullStackTrace());
HtmlizedException htmlException = ex as HtmlizedException;
if (htmlException == null)
{
FillDefaultErrorValues(true, true, ex, values);
}
else
{
pageType = ExceptionPageTemplateType.Htmlized;
FillHtmlizedErrorValues(values, htmlException, ref pageType);
}
}
return(template.Render(values, pageType));
} catch (Exception ex) {
Console.Error.WriteLine("An exception has occurred while generating HttpException page:");
Console.Error.WriteLine(ex);
Console.Error.WriteLine();
Console.Error.WriteLine("The actual exception which was being reported was:");
Console.Error.WriteLine(this);
// we need the try/catch block in case the
// problem was with MapPath, which will cause
// IsCustomErrorEnabled to throw an exception
try {
FillDefaultCustomErrorValues(values);
return(template.Render(values, ExceptionPageTemplateType.CustomErrorDefault));
} catch {
return(DoubleFaultExceptionMessage);
}
}
}
public string ReplaceMacros (string value, ExceptionPageTemplateValues values)
{
if (String.IsNullOrEmpty (value))
return value;
if (values == null)
throw new ArgumentNullException ("values");
List <string> macroNames = MacroNames;
if (macroNames == null || macroNames.Count == 0)
return value;
var sb = new StringBuilder (value);
string macroValue;
foreach (string macro in macroNames) {
if (String.IsNullOrEmpty (macro))
continue;
macroValue = values.Get (macro);
if (macroValue == null)
macroValue = String.Empty;
sb.Replace ("@" + macro + "@", macroValue);
}
return sb.ToString ();
}
public virtual bool Visible (ExceptionPageTemplateValues values)
{
List <string> required = RequiredMacros;
if (required == null || required.Count == 0)
return true;
if (values == null || values.Count == 0)
return false;
foreach (string macro in required) {
if (values.Get (macro) == null)
return false;
}
return true;
}
public string GetHtmlErrorMessage ()
{
var values = new ExceptionPageTemplateValues ();
ExceptionPageTemplate template = PageTemplate;
try {
values.Add (ExceptionPageTemplate.Template_RuntimeVersionInformationName, RuntimeHelpers.MonoVersion);
values.Add (ExceptionPageTemplate.Template_AspNetVersionInformationName, Environment.Version.ToString ());
HttpContext ctx = HttpContext.Current;
ExceptionPageTemplateType pageType = ExceptionPageTemplateType.Standard;
if (ctx != null && ctx.IsCustomErrorEnabled) {
if (http_code != 404 && http_code != 403) {
FillDefaultCustomErrorValues (values);
pageType = ExceptionPageTemplateType.CustomErrorDefault;
} else
FillDefaultErrorValues (false, false, null, values);
} else {
Exception ex = GetBaseException ();
if (ex == null)
ex = this;
values.Add (ExceptionPageTemplate.Template_FullStackTraceName, FormatFullStackTrace ());
HtmlizedException htmlException = ex as HtmlizedException;
if (htmlException == null)
FillDefaultErrorValues (true, true, ex, values);
else {
pageType = ExceptionPageTemplateType.Htmlized;
FillHtmlizedErrorValues (values, htmlException, ref pageType);
}
}
return template.Render (values, pageType);
} catch (Exception ex) {
Console.Error.WriteLine ("An exception has occurred while generating HttpException page:");
Console.Error.WriteLine (ex);
Console.Error.WriteLine ();
Console.Error.WriteLine ("The actual exception which was being reported was:");
Console.Error.WriteLine (this);
// we need the try/catch block in case the
// problem was with MapPath, which will cause
// IsCustomErrorEnabled to throw an exception
try {
FillDefaultCustomErrorValues (values);
return template.Render (values, ExceptionPageTemplateType.CustomErrorDefault);
} catch {
return DoubleFaultExceptionMessage;
}
}
}
void FillDefaultCustomErrorValues (ExceptionPageTemplateValues values)
{
values.Add (ExceptionPageTemplate.Template_PageTitleName, "Runtime Error");
values.Add (ExceptionPageTemplate.Template_ExceptionTypeName, "Runtime Error");
values.Add (ExceptionPageTemplate.Template_ExceptionMessageName, "A runtime error has occurred");
values.Add (ExceptionPageTemplate.Template_DescriptionName, "An application error occurred on the server. The current custom error settings for this application prevent the details of the application error from being viewed (for security reasons).");
values.Add (ExceptionPageTemplate.Template_DetailsName, "To enable the details of this specific error message to be viewable, please create a <customErrors> tag within a "web.config" configuration file located in the root directory of the current web application. This <customErrors> tag should then have its "mode" attribute set to "Off".");
}
void FillHtmlizedErrorValues (ExceptionPageTemplateValues values, HtmlizedException exc, ref ExceptionPageTemplateType pageType)
{
bool isParseException = exc is ParseException;
bool isCompileException = (!isParseException && exc is CompilationException);
values.Add (ExceptionPageTemplate.Template_PageTitleName, HtmlEncode (exc.Title));
values.Add (ExceptionPageTemplate.Template_DescriptionName, HtmlEncode (exc.Description));
values.Add (ExceptionPageTemplate.Template_StackTraceName, HtmlEncode (exc.StackTrace));
values.Add (ExceptionPageTemplate.Template_ExceptionTypeName, exc.GetType ().ToString ());
values.Add (ExceptionPageTemplate.Template_ExceptionMessageName, HtmlEncode (exc.Message));
values.Add (ExceptionPageTemplate.Template_DetailsName, HtmlEncode (exc.ErrorMessage));
string origin;
if (isParseException)
origin = "Parser";
else if (isCompileException)
origin = "Compiler";
else
origin = "Other";
values.Add (ExceptionPageTemplate.Template_HtmlizedExceptionOriginName, origin);
if (exc.FileText != null) {
pageType |= ExceptionPageTemplateType.SourceError;
StringBuilder shortSource = new StringBuilder ();
StringBuilder longSource;
if (isCompileException)
longSource = new StringBuilder ();
else
longSource = null;
FormatSource (shortSource, longSource, exc);
values.Add (ExceptionPageTemplate.Template_HtmlizedExceptionShortSourceName, shortSource.ToString ());
values.Add (ExceptionPageTemplate.Template_HtmlizedExceptionLongSourceName, longSource != null ? longSource.ToString () : null);
if (exc.SourceFile != exc.FileName)
values.Add (ExceptionPageTemplate.Template_HtmlizedExceptionSourceFileName, FormatSourceFile (exc.SourceFile));
else
values.Add (ExceptionPageTemplate.Template_HtmlizedExceptionSourceFileName, FormatSourceFile (exc.FileName));
if (isParseException || isCompileException) {
int[] errorLines = exc.ErrorLines;
int numErrors = errorLines != null ? errorLines.Length : 0;
var lines = new StringBuilder ();
for (int i = 0; i < numErrors; i++) {
if (i > 0)
lines.Append (", ");
lines.Append (errorLines [i]);
}
values.Add (ExceptionPageTemplate.Template_HtmlizedExceptionErrorLinesName, lines.ToString ());
}
} else
values.Add (ExceptionPageTemplate.Template_HtmlizedExceptionSourceFileName, FormatSourceFile (exc.FileName));
if (isCompileException) {
CompilationException cex = exc as CompilationException;
StringCollection output = cex.CompilerOutput;
if (output != null && output.Count > 0) {
pageType |= ExceptionPageTemplateType.CompilerOutput;
var sb = new StringBuilder ();
bool first = true;
foreach (string s in output) {
sb.Append (HtmlEncode (s));
if (first) {
sb.Append ("<br/>");
first = false;
}
sb.Append ("<br/>");
}
values.Add (ExceptionPageTemplate.Template_HtmlizedExceptionCompilerOutputName, sb.ToString ());
}
}
}