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default.aspx
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<%-- A web page that you can simply drop in any ASP.NET Framework based host (like IIS or Azure App Service) to get a lot of info on the web server where it's running and perform additional tasks from there --%>
<%@ Page Language="C#" %>
<%@ Import Namespace="System.Data.SqlClient" %>
<%@ Import Namespace="System.Diagnostics" %>
<%@ Import Namespace="System.IO" %>
<%@ Import Namespace="System.Net" %>
<%@ Import Namespace="System.Runtime" %>
<%@ Import Namespace="System.Runtime.InteropServices" %>
<%@ Import Namespace="System.Security.Claims" %>
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" integrity="sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO" crossorigin="anonymous">
<title>Inspector Gadget</title>
</head>
<body style="<%: GetBodyStyle() %>">
<div class="container">
<h1>Inspector Gadget</h1>
<% RenderInfoMessage(); %>
<ol class="list-inline">
<li class="list-inline-item">» <a href="#request">Request</a></li>
<li class="list-inline-item">» <a href="#http-headers">HTTP Headers</a></li>
<li class="list-inline-item">» <a href="#identity">Identity</a></li>
<li class="list-inline-item">» <a href="#app-settings">App Settings</a></li>
<li class="list-inline-item">» <a href="#connection-strings">Connection Strings</a></li>
<li class="list-inline-item">» <a href="#environment-variables">Environment Variables</a></li>
<li class="list-inline-item">» <a href="#server-variables">Server Variables</a></li>
<li class="list-inline-item">» <a href="#system">System</a></li>
<li class="list-inline-item">» <a href="#dns-lookup">DNS Lookup</a></li>
<li class="list-inline-item">» <a href="#outbound-http-request">Outbound HTTP Request</a></li>
<li class="list-inline-item">» <a href="#outbound-sql-connection">Outbound SQL Connection</a></li>
<li class="list-inline-item">» <a href="#azure-managed-identity">Azure Managed Identity</a></li>
</ol>
<% RenderHeader("Request", "request"); %>
<% RenderTable(GetRequestInfo()); %>
<% RenderHeader("HTTP Headers", "http-headers"); %>
<% RenderTable(GetHttpHeadersInfo()); %>
<% RenderHeader("Identity", "identity"); %>
<% RenderTable(GetIdentityInfo()); %>
<% RenderHeader("App Settings", "app-settings"); %>
<div class="alert alert-secondary">
You can change the background color by setting the <code>BackgroundColor</code> configuration setting,
and add an informational message by setting the <code>InfoMessage</code> configuration setting.
</div>
<% RenderTable(ConfigurationManager.AppSettings.AllKeys.OrderBy(k => k).Select(k => new KeyValuePair<string, string>(k, ConfigurationManager.AppSettings[k]))); %>
<% RenderHeader("Connection Strings", "connection-strings"); %>
<% RenderTable(ConfigurationManager.ConnectionStrings.Cast<ConnectionStringSettings>().Select(k => new KeyValuePair<string, string>(k.Name, k.ConnectionString))); %>
<% RenderHeader("Environment Variables", "environment-variables"); %>
<% RenderTable(Environment.GetEnvironmentVariables().Keys.Cast<string>().OrderBy(k => k).Select(k => new KeyValuePair<string, string>(k, Environment.GetEnvironmentVariable(k)))); %>
<% RenderHeader("Server Variables", "server-variables"); %>
<% RenderTable(GetServerVariablesInfo()); %>
<% RenderHeader("System", "system"); %>
<% RenderTable(GetSystemInfo()); %>
<% RenderHeader("DNS Lookup", "dns-lookup"); %>
<% RenderDnsLookup(); %>
<% RenderHeader("Outbound HTTP Request", "outbound-http-request"); %>
<% RenderOutboundHttpRequest(); %>
<% RenderHeader("Outbound SQL Connection", "outbound-sql-connection"); %>
<% RenderOutboundSqlConnection(); %>
<% RenderHeader("Azure Managed Identity", "azure-managed-identity"); %>
<% RenderAzureManagedIdentity(); %>
</div>
<footer class="border-top footer text-muted">
<div class="container">
© <%: DateTimeOffset.UtcNow.Year %> | <a href="https://github.com/jelledruyts/InspectorGadget">Project Homepage</a>
</div>
</footer>
</body>
</html>
<%
System.Net.ServicePointManager.SecurityProtocol = System.Net.SecurityProtocolType.Tls12;
%>
<script runat="server">
protected void RenderHeader(string name, string anchor)
{
Response.Write(Environment.NewLine);
Response.Write("<a name=\"" + anchor + "\"></a>");
Response.Write(Environment.NewLine);
Response.Write("<h3>" + name + "</h3>");
Response.Write(Environment.NewLine);
}
protected void RenderTable(IEnumerable<KeyValuePair<string, string>> values)
{
Response.Write("<table class=\"table table-striped table-hover table-sm table-bordered table-responsive\">");
Response.Write(Environment.NewLine);
foreach (var item in values)
{
Response.Write("<tr>");
Response.Write("<td class=\"text-nowrap\">" + HttpUtility.HtmlEncode(item.Key) + "</td>");
Response.Write("<td style=\"width: 100%;\">" + HttpUtility.HtmlEncode(item.Value) + "</td>");
Response.Write("</tr>");
Response.Write(Environment.NewLine);
}
Response.Write("</table>");
Response.Write(Environment.NewLine);
}
protected string GetBodyStyle()
{
var backgroundColor = ConfigurationManager.AppSettings["BackgroundColor"];
if (!string.IsNullOrWhiteSpace(backgroundColor))
{
return "background-color: " + backgroundColor + ";";
}
return string.Empty;
}
protected void RenderInfoMessage()
{
var infoMessage = ConfigurationManager.AppSettings["InfoMessage"];
if (!string.IsNullOrWhiteSpace(infoMessage))
{
Response.Write(Environment.NewLine);
Response.Write("<div class=\"alert alert-primary\">" + infoMessage + "</div>");
Response.Write(Environment.NewLine);
}
}
protected IList<KeyValuePair<string, string>> GetRequestInfo()
{
var info = new List<KeyValuePair<string, string>>();
info.Add(new KeyValuePair<string, string>("Application Path", Request.ApplicationPath));
info.Add(new KeyValuePair<string, string>("Client Certificate Serial Number", Request.ClientCertificate == null ? null : Request.ClientCertificate.SerialNumber));
info.Add(new KeyValuePair<string, string>("HTTP Method", Request.HttpMethod));
info.Add(new KeyValuePair<string, string>("Is Secure Connection", Request.IsSecureConnection.ToString()));
info.Add(new KeyValuePair<string, string>("Physical Application Path", Request.PhysicalApplicationPath));
info.Add(new KeyValuePair<string, string>("Physical Path", Request.PhysicalPath));
info.Add(new KeyValuePair<string, string>("URL", Request.Url.ToString()));
info.Add(new KeyValuePair<string, string>("Referrer", Request.UrlReferrer == null ? null : Request.UrlReferrer.ToString()));
return info;
}
protected IList<KeyValuePair<string, string>> GetHttpHeadersInfo()
{
var info = new List<KeyValuePair<string, string>>();
foreach (var key in Request.Headers.AllKeys.OrderBy(k => k))
{
foreach (var value in Request.Headers.GetValues(key))
{
info.Add(new KeyValuePair<string, string>(key, value));
}
}
return info;
}
protected IList<KeyValuePair<string, string>> GetIdentityInfo()
{
var info = new List<KeyValuePair<string, string>>();
var identity = (ClaimsIdentity)User.Identity;
info.Add(new KeyValuePair<string, string>("User Name", User.Identity.Name));
info.Add(new KeyValuePair<string, string>("User Is Authenticated", User.Identity.IsAuthenticated.ToString()));
info.Add(new KeyValuePair<string, string>("User Authentication Type", User.Identity.AuthenticationType));
foreach (var claim in identity.Claims.OrderBy(c => c.Type))
{
info.Add(new KeyValuePair<string, string>(claim.Type, claim.Value));
}
return info;
}
protected IList<KeyValuePair<string, string>> GetSystemInfo()
{
var info = new List<KeyValuePair<string, string>>();
info.Add(new KeyValuePair<string, string>("Machine Name", Environment.MachineName));
info.Add(new KeyValuePair<string, string>("64-bit OS", Environment.Is64BitOperatingSystem.ToString()));
info.Add(new KeyValuePair<string, string>("64-bit Process", Environment.Is64BitProcess.ToString()));
info.Add(new KeyValuePair<string, string>("OS Version", Environment.OSVersion.ToString()));
info.Add(new KeyValuePair<string, string>("Processor Count", Environment.ProcessorCount.ToString()));
info.Add(new KeyValuePair<string, string>("CLR Version", Environment.Version.ToString()));
info.Add(new KeyValuePair<string, string>("Logged On User Domain", Environment.UserDomainName));
info.Add(new KeyValuePair<string, string>("Logged On User Name", Environment.UserName));
info.Add(new KeyValuePair<string, string>("Garbage Collection Mode", GCSettings.IsServerGC ? "Server" : "Workstation"));
info.Add(new KeyValuePair<string, string>("System Time", Format(DateTimeOffset.UtcNow)));
info.Add(new KeyValuePair<string, string>("System Uptime", GetSystemUptime().ToString()));
info.Add(new KeyValuePair<string, string>("System Start Time", Format(DateTime.UtcNow - GetSystemUptime())));
info.Add(new KeyValuePair<string, string>("Process Uptime", GetProcessUptime().ToString()));
info.Add(new KeyValuePair<string, string>("Process Start Time", Format(DateTime.UtcNow - GetProcessUptime())));
return info;
}
protected IList<KeyValuePair<string, string>> GetServerVariablesInfo()
{
var info = new List<KeyValuePair<string, string>>();
foreach (var key in Request.ServerVariables.AllKeys.Where(k => Request.ServerVariables.GetValues(k) != null).OrderBy(k => k))
{
foreach (var value in Request.ServerVariables.GetValues(key))
{
info.Add(new KeyValuePair<string, string>(key, value));
}
}
return info;
}
protected void RenderDnsLookup()
{
var dnsLookup = Request["dnsLookup"] ?? ConfigurationManager.AppSettings["DefaultDnsLookupHost"];
Response.Write(Environment.NewLine);
Response.Write(@"
<form method=""POST"" action=""#dns-lookup"">
<p class=""text-muted"">Allows you to perform a DNS lookup from the web server and render the results below.</p>
<div class=""form-group"">
<label for=""dnsLookup"">Host name (or IP address)</label>
<input type=""text"" name=""dnsLookup"" id=""dnsLookup"" value=""" + HttpUtility.HtmlAttributeEncode(dnsLookup) + @""" class=""form-control"" title=""You can set the default value as a 'DefaultDnsLookupHost' configuration setting"" />
</div>
<div class=""form-group"">
<input type=""hidden"" name=""requestType"" value=""DnsLookup"" />
<input type=""submit"" value=""Submit"" class=""btn btn-primary"" />
</div>
</form>
");
if (string.Equals(Request.HttpMethod, "POST", StringComparison.OrdinalIgnoreCase) && string.Equals(Request["requestType"], "DnsLookup", StringComparison.OrdinalIgnoreCase) && !string.IsNullOrWhiteSpace(dnsLookup))
{
var result = string.Empty;
try
{
var host = Dns.GetHostEntry(dnsLookup);
var resultBuilder = new StringBuilder();
resultBuilder.AppendFormat("Host name: \"{0}\"", host.HostName).AppendLine();
resultBuilder.AppendFormat("IP Addresses: " + string.Join(", ", (object[])host.AddressList)).AppendLine();
if (host.Aliases != null && host.Aliases.Length > 0)
{
resultBuilder.AppendFormat("Aliases: " + string.Join(", ", host.Aliases)).AppendLine();
}
result = resultBuilder.ToString().TrimEnd();
}
catch (Exception exc)
{
result = HttpUtility.HtmlEncode(exc.ToString());
}
RenderResultCard(result);
}
}
protected void RenderOutboundHttpRequest()
{
var requestUrl = Request["requestUrl"] ?? ConfigurationManager.AppSettings["DefaultHttpRequestUrl"] ?? "http://ipinfo.io/ip";
var requestHostName = Request["requestHostName"] ?? ConfigurationManager.AppSettings["DefaultHttpRequestHostName"];
Response.Write(Environment.NewLine);
Response.Write(@"
<form method=""POST"" action=""#outbound-http-request"">
<p class=""text-muted"">Allows you to perform an HTTP request from the web server and render the results below.</p>
<div class=""form-group"">
<label for=""requestUrl"">URL</label>
<input type=""text"" name=""requestUrl"" id=""requestUrl"" value=""" + HttpUtility.HtmlAttributeEncode(requestUrl) + @""" class=""form-control"" title=""You can set the default value as a 'DefaultHttpRequestUrl' configuration setting"" />
</div>
<div class=""form-group"">
<label for=""requestHostName"">Override Host Name (optional)</label>
<input type=""text"" name=""requestHostName"" id=""requestHostName"" value=""" + HttpUtility.HtmlAttributeEncode(requestHostName) + @""" class=""form-control"" title=""You can set the default value as a 'DefaultHttpRequestHostName' configuration setting"" />
</div>
<div class=""form-group"">
<input type=""hidden"" name=""requestType"" value=""OutboundHttpRequest"" />
<input type=""submit"" value=""Submit"" class=""btn btn-primary"" />
</div>
</form>
");
if (string.Equals(Request.HttpMethod, "POST", StringComparison.OrdinalIgnoreCase) && string.Equals(Request["requestType"], "OutboundHttpRequest", StringComparison.OrdinalIgnoreCase) && !string.IsNullOrWhiteSpace(requestUrl))
{
var result = string.Empty;
try
{
var request = (HttpWebRequest)WebRequest.Create(requestUrl);
if (!string.IsNullOrWhiteSpace(requestHostName))
{
request.Host = requestHostName;
}
using (var response = (HttpWebResponse)request.GetResponse())
using (var dataStream = response.GetResponseStream())
using (var reader = new StreamReader(dataStream))
{
var responseFromServer = reader.ReadToEnd();
result = HttpUtility.HtmlEncode(responseFromServer);
}
}
catch (Exception exc)
{
result = HttpUtility.HtmlEncode(exc.ToString());
}
RenderResultCard(result);
}
}
protected void RenderOutboundSqlConnection()
{
var sqlConnectionString = Request["sqlConnectionString"] ?? ConfigurationManager.AppSettings["DefaultSqlConnectionSqlConnectionString"];
var sqlQuery = Request["sqlQuery"] ?? ConfigurationManager.AppSettings["DefaultSqlConnectionSqlQuery"] ?? "SELECT 'User \"' + USER_NAME() + '\" logged in from IP address \"' + CAST(CONNECTIONPROPERTY('client_net_address') AS NVARCHAR) + '\" to database \"' + DB_NAME() + '\" on server \"' + @@SERVERNAME + '\"'";
Response.Write(Environment.NewLine);
Response.Write(@"
<form method=""POST"" action=""#outbound-sql-connection"">
<p class=""text-muted"">Allows you to perform a (scalar) query on a SQL Connection from the web server and render the results below.</p>
<div class=""form-group"">
<label for=""sqlConnectionString"">SQL Connection String</label>
<input type=""password"" name=""sqlConnectionString"" id=""sqlConnectionString"" value=""" + HttpUtility.HtmlAttributeEncode(sqlConnectionString) + @""" class=""form-control"" autocomplete=""off"" title=""You can set the default value as a 'DefaultSqlConnectionSqlConnectionString' configuration setting"" />
</div>
<div class=""form-group"">
<label for=""sqlQuery"">Query</label>
<input type=""text"" name=""sqlQuery"" id=""sqlQuery"" value=""" + HttpUtility.HtmlAttributeEncode(sqlQuery) + @""" class=""form-control"" title=""You can set the default value as a 'DefaultSqlConnectionSqlQuery' configuration setting"" />
</div>
<div class=""form-group"">
<input type=""hidden"" name=""requestType"" value=""OutboundSqlConnection"" />
<input type=""submit"" value=""Submit"" class=""btn btn-primary"" />
</div>
</form>
");
if (string.Equals(Request.HttpMethod, "POST", StringComparison.OrdinalIgnoreCase) && string.Equals(Request["requestType"], "OutboundSqlConnection", StringComparison.OrdinalIgnoreCase) && !string.IsNullOrWhiteSpace(sqlConnectionString))
{
var result = string.Empty;
try
{
using (var connection = new SqlConnection(sqlConnectionString))
using (var command = connection.CreateCommand())
{
connection.Open();
command.CommandText = sqlQuery;
result = HttpUtility.HtmlEncode(command.ExecuteScalar());
}
}
catch (Exception exc)
{
result = HttpUtility.HtmlEncode(exc.ToString());
}
RenderResultCard(result);
}
}
protected void RenderAzureManagedIdentity()
{
var resource = Request["resource"] ?? ConfigurationManager.AppSettings["DefaultAzureManagedIdentityResource"] ?? "https://management.azure.com/";
Response.Write(Environment.NewLine);
Response.Write(@"
<form method=""POST"" action=""#azure-managed-identity"">
<p class=""text-muted"">Allows you to request an access token for the <a href=""https://docs.microsoft.com/en-us/azure/active-directory/managed-identities-azure-resources/overview"" target=""_blank"">managed identity representing your application when running on a supported Azure service</a>.</p>
<div class=""form-group"">
<label for=""resource"">Resource (token audience)</label>
<input type=""text"" name=""resource"" id=""resource"" value=""" + HttpUtility.HtmlAttributeEncode(resource) + @""" class=""form-control"" title=""You can set the default value as a 'DefaultAzureManagedIdentityResource' configuration setting"" />
</div>
<div class=""form-group"">
<input type=""hidden"" name=""requestType"" value=""AzureManagedIdentity"" />
<input type=""submit"" value=""Submit"" class=""btn btn-primary"" />
</div>
</form>
");
if (string.Equals(Request.HttpMethod, "POST", StringComparison.OrdinalIgnoreCase) && string.Equals(Request["requestType"], "AzureManagedIdentity", StringComparison.OrdinalIgnoreCase) && !string.IsNullOrWhiteSpace(resource))
{
var result = string.Empty;
try
{
var requestUrl = default(string);
var headerName = default(string);
var headerValue = default(string);
var identityEndpoint = Environment.GetEnvironmentVariable("IDENTITY_ENDPOINT");
var identityHeader = Environment.GetEnvironmentVariable("IDENTITY_HEADER");
if (!string.IsNullOrWhiteSpace(identityEndpoint) && !string.IsNullOrWhiteSpace(identityHeader))
{
// Running on App Service, use the corresponding endpoint and header.
// See https://docs.microsoft.com/en-us/azure/app-service/overview-managed-identity?tabs=dotnet#using-the-rest-protocol.
requestUrl = identityEndpoint + "?api-version=2019-08-01&resource=" + HttpUtility.UrlEncode(resource);
headerName = "X-IDENTITY-HEADER";
headerValue = identityHeader;
}
else
{
// See https://docs.microsoft.com/en-us/azure/active-directory/managed-identities-azure-resources/how-to-use-vm-token#get-a-token-using-c
requestUrl = "http://169.254.169.254/metadata/identity/oauth2/token?api-version=2018-02-01&resource=" + HttpUtility.UrlEncode(resource);
headerName = "Metadata";
headerValue = "true";
}
var request = (HttpWebRequest)WebRequest.Create(requestUrl);
request.Headers.Add(headerName, headerValue);
using (var response = (HttpWebResponse)request.GetResponse())
using (var dataStream = response.GetResponseStream())
using (var reader = new StreamReader(dataStream))
{
var responseFromServer = reader.ReadToEnd();
result = HttpUtility.HtmlEncode(responseFromServer);
}
}
catch (Exception exc)
{
result = HttpUtility.HtmlEncode(exc.ToString());
}
RenderResultCard(result);
}
}
protected void RenderResultCard(string result)
{
Response.Write(Environment.NewLine);
Response.Write("<h5>Result at " + Format(DateTimeOffset.UtcNow) + "</h5>");
Response.Write(Environment.NewLine);
Response.Write("<div class=\"card\"><div class=\"card-body\"><pre>");
Response.Write(Environment.NewLine);
Response.Write(result);
Response.Write(Environment.NewLine);
Response.Write("</pre></div></div>");
Response.Write(Environment.NewLine);
}
[DllImport("kernel32")]
extern static UInt64 GetTickCount64();
public static TimeSpan GetSystemUptime()
{
return TimeSpan.FromMilliseconds(GetTickCount64());
}
public static TimeSpan GetProcessUptime()
{
return (DateTime.Now - Process.GetCurrentProcess().StartTime);
}
public static string Format(DateTime value)
{
return value.ToString("u") + " (UTC)";
}
public static string Format(DateTimeOffset value)
{
return value.ToString("u") + " (UTC)";
}
</script>