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//------------------------------------------------------------------------------
// <copyright file="SecurityUtil.cs" company="Microsoft">
// Copyright (c) Microsoft Corporation. All rights reserved.
// </copyright>
//------------------------------------------------------------------------------
/*
* SecurityUtil class
*
* Copyright (c) 1999 Microsoft Corporation
*/
namespace System.Web.Util {
using System.Globalization;
using System.Web.Hosting;
using System.Collections;
using System.Collections.Specialized;
using System.Data;
using System.Data.SqlClient;
using System.Data.SqlTypes;
using System.Configuration.Provider;
using System.Configuration;
using System.Text.RegularExpressions;
using System.Web.DataAccess;
internal static class SecUtility {
internal static string GetDefaultAppName() {
try {
string appName = HostingEnvironment.ApplicationVirtualPath;
if (String.IsNullOrEmpty(appName)) {
#if !FEATURE_PAL
// ROTORTODO: enable Process.MainModule or support an alternative
// naming scheme for (HttpRuntime.AppDomainAppVirtualPath == null)
appName = System.Diagnostics.Process.GetCurrentProcess().
MainModule.ModuleName;
int indexOfDot = appName.IndexOf('.');
if (indexOfDot != -1) {
appName = appName.Remove(indexOfDot);
}
#endif // !FEATURE_PAL
}
if (String.IsNullOrEmpty(appName)) {
return "/";
}
else {
return appName;
}
}
catch {
return "/";
}
}
internal static string GetConnectionString(NameValueCollection config) {
Debug.Assert(config != null);
string connectionString = config["connectionString"];
if (!String.IsNullOrEmpty(connectionString)) {
return connectionString;
}
else {
string connectionStringName = config["connectionStringName"];
if (String.IsNullOrEmpty(connectionStringName))
throw new ProviderException(SR.GetString(SR.Connection_name_not_specified));
connectionString = SqlConnectionHelper.GetConnectionString(connectionStringName, lookupConnectionString: true, appLevel: true);
if (String.IsNullOrEmpty(connectionString)) {
throw new ProviderException(SR.GetString(SR.Connection_string_not_found, connectionStringName));
}
else {
return connectionString;
}
}
}
// We don't trim the param before checking with password parameters
internal static bool ValidatePasswordParameter(ref string param, int maxSize) {
if (param == null) {
return false;
}
if (param.Length < 1) {
return false;
}
if (maxSize > 0 && (param.Length > maxSize) ) {
return false;
}
return true;
}
internal static bool ValidateParameter(ref string param, bool checkForNull, bool checkIfEmpty, bool checkForCommas, int maxSize) {
if (param == null) {
return !checkForNull;
}
param = param.Trim();
if ((checkIfEmpty && param.Length < 1) ||
(maxSize > 0 && param.Length > maxSize) ||
(checkForCommas && param.Contains(","))) {
return false;
}
return true;
}
// We don't trim the param before checking with password parameters
internal static void CheckPasswordParameter(ref string param, int maxSize, string paramName) {
if (param == null) {
throw new ArgumentNullException(paramName);
}
if (param.Length < 1) {
throw new ArgumentException(SR.GetString(SR.Parameter_can_not_be_empty, paramName), paramName);
}
if (maxSize > 0 && param.Length > maxSize) {
throw new ArgumentException(SR.GetString(SR.Parameter_too_long, paramName, maxSize.ToString(CultureInfo.InvariantCulture)), paramName);
}
}
internal static void CheckParameter(ref string param, bool checkForNull, bool checkIfEmpty, bool checkForCommas, int maxSize, string paramName) {
if (param == null) {
if (checkForNull) {
throw new ArgumentNullException(paramName);
}
return;
}
param = param.Trim();
if (checkIfEmpty && param.Length < 1) {
throw new ArgumentException(SR.GetString(SR.Parameter_can_not_be_empty, paramName), paramName);
}
if (maxSize > 0 && param.Length > maxSize) {
throw new ArgumentException(SR.GetString(SR.Parameter_too_long, paramName, maxSize.ToString(CultureInfo.InvariantCulture)), paramName);
}
if (checkForCommas && param.Contains(",")) {
throw new ArgumentException(SR.GetString(SR.Parameter_can_not_contain_comma, paramName), paramName);
}
}
internal static void CheckArrayParameter(ref string[] param, bool checkForNull, bool checkIfEmpty, bool checkForCommas, int maxSize, string paramName) {
if (param == null) {
throw new ArgumentNullException(paramName);
}
if (param.Length < 1) {
throw new ArgumentException(SR.GetString(SR.Parameter_array_empty, paramName), paramName);
}
Hashtable values = new Hashtable(param.Length);
for (int i = param.Length - 1; i >= 0; i--) {
SecUtility.CheckParameter(ref param[i], checkForNull, checkIfEmpty, checkForCommas, maxSize,
paramName + "[ " + i.ToString(CultureInfo.InvariantCulture) + " ]");
if (values.Contains(param[i])) {
throw new ArgumentException(SR.GetString(SR.Parameter_duplicate_array_element, paramName), paramName);
}
else {
values.Add(param[i], param[i]);
}
}
}
internal static bool GetBooleanValue(NameValueCollection config, string valueName, bool defaultValue) {
string sValue = config[valueName];
if (sValue == null) {
return defaultValue;
}
bool result;
if (bool.TryParse(sValue, out result)) {
return result;
}
else {
throw new ProviderException(SR.GetString(SR.Value_must_be_boolean, valueName));
}
}
internal static int GetIntValue(NameValueCollection config, string valueName, int defaultValue, bool zeroAllowed, int maxValueAllowed) {
string sValue = config[valueName];
if (sValue == null) {
return defaultValue;
}
int iValue;
if (!Int32.TryParse(sValue, out iValue)) {
if (zeroAllowed) {
throw new ProviderException(SR.GetString(SR.Value_must_be_non_negative_integer, valueName));
}
throw new ProviderException(SR.GetString(SR.Value_must_be_positive_integer, valueName));
}
if (zeroAllowed && iValue < 0) {
throw new ProviderException(SR.GetString(SR.Value_must_be_non_negative_integer, valueName));
}
if (!zeroAllowed && iValue <= 0) {
throw new ProviderException(SR.GetString(SR.Value_must_be_positive_integer, valueName));
}
if (maxValueAllowed > 0 && iValue > maxValueAllowed) {
throw new ProviderException(SR.GetString(SR.Value_too_big, valueName, maxValueAllowed.ToString(CultureInfo.InvariantCulture)));
}
return iValue;
}
#if !FEATURE_PAL //
internal static void CheckSchemaVersion(ProviderBase provider, SqlConnection connection, string[] features, string version, ref int schemaVersionCheck) {
if (connection == null) {
throw new ArgumentNullException("connection");
}
if (features == null) {
throw new ArgumentNullException("features");
}
if (version == null) {
throw new ArgumentNullException("version");
}
if (schemaVersionCheck == -1) {
throw new ProviderException(SR.GetString(SR.Provider_Schema_Version_Not_Match, provider.ToString(), version));
}
else if (schemaVersionCheck == 0) {
lock (provider) {
if (schemaVersionCheck == -1) {
throw new ProviderException(SR.GetString(SR.Provider_Schema_Version_Not_Match, provider.ToString(), version));
}
else if (schemaVersionCheck == 0) {
int iStatus = 0;
SqlCommand cmd = null;
SqlParameter p = null;
foreach (string feature in features) {
cmd = new SqlCommand("dbo.aspnet_CheckSchemaVersion", connection);
cmd.CommandType = CommandType.StoredProcedure;
p = new SqlParameter("@Feature", feature);
cmd.Parameters.Add(p);
p = new SqlParameter("@CompatibleSchemaVersion", version);
cmd.Parameters.Add(p);
p = new SqlParameter("@ReturnValue", SqlDbType.Int);
p.Direction = ParameterDirection.ReturnValue;
cmd.Parameters.Add(p);
cmd.ExecuteNonQuery();
iStatus = ((p.Value != null) ? ((int)p.Value) : -1);
if (iStatus != 0) {
schemaVersionCheck = -1;
throw new ProviderException(SR.GetString(SR.Provider_Schema_Version_Not_Match, provider.ToString(), version));
}
}
schemaVersionCheck = 1;
}
}
}
}
#endif // !FEATURE_PAL
}
}
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