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315 lines
15 KiB
C#
315 lines
15 KiB
C#
//------------------------------------------------------------------------------
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// <copyright file="SqlHelper.cs" company="Microsoft">
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// Copyright (c) Microsoft Corporation. All rights reserved.
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// </copyright>
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//------------------------------------------------------------------------------
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namespace System.Web.ClientServices.Providers
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{
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using System;
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using System.Security;
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using System.Security.Permissions;
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using System.Security.AccessControl;
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using System.Globalization;
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using System.Data;
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using System.Data.Common;
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using System.Data.OleDb;
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using System.IO;
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using System.Windows.Forms;
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using System.Data.SqlClient;
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using System.Reflection;
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using System.Diagnostics.CodeAnalysis;
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using System.Web.Resources;
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internal static class SqlHelper
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{
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private const string _SQL_CE_Tag = "|SQL/CE|";
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private const string _SQL_FILES_Tag = "|FILES|";
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private const string _SQL_CE_CONN_STRING = "Data Source = |SQL/CE|";
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private const string _Isolated_Storage_Tag = "|Isolated_Storage|";
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/////////////////////////////////////////////////////////////////////////////////
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/////////////////////////////////////////////////////////////////////////////////
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internal static string GetDefaultConnectionString()
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{
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return _SQL_FILES_Tag;
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}
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/////////////////////////////////////////////////////////////////////////////////
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/////////////////////////////////////////////////////////////////////////////////
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internal static int IsSpecialConnectionString(string connectionString) {
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if (string.IsNullOrEmpty(connectionString))
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return 1; // Default to FILES
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if (string.Compare(connectionString, _SQL_FILES_Tag, StringComparison.OrdinalIgnoreCase) == 0)
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return 1;
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// if (string.Compare(connectionString, _Isolated_Storage_Tag, StringComparison.OrdinalIgnoreCase) == 0)
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// return 2; -- disable isolated storage
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return 3;
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}
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/////////////////////////////////////////////////////////////////////////////////
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/////////////////////////////////////////////////////////////////////////////////
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internal static DbConnection GetConnection(string username, string connectionString, string sqlProvider)
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{
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if (connectionString.Contains(_SQL_CE_Tag) || (sqlProvider != null && sqlProvider.Contains(".SqlServerCe"))) {
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try {
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return GetSqlCeConnection(username, connectionString);
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} catch (TypeLoadException e) {
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throw new ArgumentException(AtlasWeb.SqlHelper_SqlEverywhereNotInstalled, e);
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}
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}
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DbConnection connection = new SqlConnection(connectionString);
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connection.Open();
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return connection;
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}
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/////////////////////////////////////////////////////////////////////////////////
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/////////////////////////////////////////////////////////////////////////////////
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internal static void AddParameter(DbConnection conn, DbCommand cmd, string paramName, object paramValue)
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{
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if (!(conn is SqlConnection))
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AddSqlCeParameter(cmd, paramName, paramValue);
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else
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cmd.Parameters.Add(new SqlParameter(paramName, paramValue));
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}
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/////////////////////////////////////////////////////////////////////////////////
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/////////////////////////////////////////////////////////////////////////////////
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internal static string GetCookieFromDB(string name, string username, string connectionString, string sqlProvider)
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{
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if (connectionString == _SQL_FILES_Tag)
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return ClientDataManager.GetCookie(username, name, false);
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if (connectionString == _Isolated_Storage_Tag)
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return ClientDataManager.GetCookie(username, name, true);
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using (DbConnection connection = GetConnection(username, connectionString, sqlProvider)) {
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DbCommand cmd = connection.CreateCommand();
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cmd.CommandText = "SELECT PropertyValue FROM UserProperties WHERE PropertyName = @PropName";
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AddParameter(connection, cmd, "@PropName", "CookieName_" + name);
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return (cmd.ExecuteScalar() as string);
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}
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}
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/////////////////////////////////////////////////////////////////////////////////
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/////////////////////////////////////////////////////////////////////////////////
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internal static string StoreCookieInDB(string cookieName, string cookieValue, string username, string connectionString, string sqlProvider)
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{
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if (connectionString == _SQL_FILES_Tag)
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return ClientDataManager.StoreCookie(username, cookieName, cookieValue, false);
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if (connectionString == _Isolated_Storage_Tag)
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return ClientDataManager.StoreCookie(username, cookieName, cookieValue, true);
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string name = Guid.NewGuid().ToString("N");
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using (DbConnection connection = GetConnection(username, connectionString, sqlProvider)) {
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DbTransaction trans = null;
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try {
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trans = connection.BeginTransaction();
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DbCommand cmd = connection.CreateCommand();
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// delete old cookie
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cmd.CommandText = "DELETE FROM UserProperties WHERE PropertyName LIKE N'CookieName_%' AND PropertyValue LIKE @PropValue";
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cmd.Transaction = trans;
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AddParameter(connection, cmd, "@PropValue", cookieName + "=%");
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cmd.ExecuteNonQuery();
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if (!string.IsNullOrEmpty(cookieValue)) {
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cmd = connection.CreateCommand();
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cmd.Transaction = trans;
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cmd.CommandText = "INSERT INTO UserProperties (PropertyName, PropertyValue) VALUES (@PropName, @PropValue)";
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AddParameter(connection, cmd, "@PropName", "CookieName_" + name);
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AddParameter(connection, cmd, "@PropValue", cookieName + "=" + cookieValue);
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cmd.ExecuteNonQuery();
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return name;
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}
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return cookieName;
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} catch {
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if (trans != null) {
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trans.Rollback();
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trans = null;
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}
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throw;
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} finally {
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if (trans != null)
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trans.Commit();
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}
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}
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}
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/////////////////////////////////////////////////////////////////////////////////
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/////////////////////////////////////////////////////////////////////////////////
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internal static void DeleteAllCookies(string username, string connectionString, string sqlProvider)
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{
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if (connectionString == _SQL_FILES_Tag || connectionString == _Isolated_Storage_Tag) {
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ClientDataManager.DeleteAllCookies(username, connectionString == _Isolated_Storage_Tag);
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return;
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}
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using (DbConnection connection = GetConnection(username, connectionString, sqlProvider)) {
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DbTransaction trans = null;
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try {
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trans = connection.BeginTransaction();
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DbCommand cmd = connection.CreateCommand();
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cmd.CommandText = "DELETE FROM UserProperties WHERE PropertyName LIKE N'CookieName_%'";
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cmd.Transaction = trans;
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cmd.ExecuteNonQuery();
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} catch {
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if (trans != null) {
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trans.Rollback();
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trans = null;
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}
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throw;
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} finally {
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if (trans != null)
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trans.Commit();
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}
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}
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}
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/////////////////////////////////////////////////////////////////////////////////
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/////////////////////////////////////////////////////////////////////////////////
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/////////////////////////////////////////////////////////////////////////////////
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/////////////////////////////////////////////////////////////////////////////////
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private static Type _SqlCeConnectionType = null;
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private static Type _SqlCeParamType = null;
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/////////////////////////////////////////////////////////////////////////////////
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/////////////////////////////////////////////////////////////////////////////////
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private static DbConnection GetSqlCeConnection(string username, string connectionString)
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{
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DbConnection conn = CreateDBIfRequired(username, connectionString);
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if (conn == null)
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conn = CreateNewSqlCeConnection(connectionString, true); //new SqlCeConnection(connectionString);
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return conn;
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}
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/////////////////////////////////////////////////////////////////////////////////
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/////////////////////////////////////////////////////////////////////////////////
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// [PermissionSet(SecurityAction.Assert, Unrestricted = true)]
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private static DbConnection CreateDBIfRequired(string username, string connectionString) {
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if (!connectionString.Contains(_SQL_CE_Tag))
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return null;
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DbConnection conn = null;
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try {
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conn = CreateNewSqlCeConnection(connectionString, false);
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if (string.Compare(conn.Database.Trim(), _SQL_CE_Tag, StringComparison.OrdinalIgnoreCase) != 0) {
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conn.Open();
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return conn;
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}
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conn.Dispose();
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conn = null;
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} catch (TypeLoadException e) {
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throw new ArgumentException(AtlasWeb.SqlHelper_SqlEverywhereNotInstalled, e);
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}
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string fileName = GetFullDBFileName(username, "_DB.spf");
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bool needToCreateDB = (File.Exists(fileName) == false);
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connectionString = connectionString.Replace(_SQL_CE_Tag, fileName);
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if (needToCreateDB) {
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using (IDisposable engine = (IDisposable)Activator.CreateInstance(GetSqlCeType("SqlCeEngine"), new object[] { connectionString })) {
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engine.GetType().InvokeMember("CreateDatabase", BindingFlags.InvokeMethod | BindingFlags.Public | BindingFlags.Instance,
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null, engine, null, CultureInfo.InvariantCulture);
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}
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using (conn = CreateNewSqlCeConnection(connectionString, true)) {
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DbCommand cmd = conn.CreateCommand();
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if (username == null) {
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cmd.CommandText = "CREATE TABLE ApplicationProperties (PropertyName nvarchar(256), PropertyValue nvarchar(256))";
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cmd.ExecuteNonQuery();
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} else {
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cmd.CommandText = "CREATE TABLE UserProperties (PropertyName nvarchar(256), PropertyValue nvarchar(256))";
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cmd.ExecuteNonQuery();
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cmd = conn.CreateCommand();
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cmd.CommandText = "CREATE TABLE Roles (UserName nvarchar(256), RoleName nvarchar(256))";
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cmd.ExecuteNonQuery();
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cmd = conn.CreateCommand();
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cmd.CommandText = "CREATE TABLE Settings (PropertyName nvarchar(256), PropertyStoredAs nvarchar(1), PropertyValue nvarchar(2048))";
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cmd.ExecuteNonQuery();
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}
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}
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}
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return CreateNewSqlCeConnection(connectionString, true);
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}
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/////////////////////////////////////////////////////////////////////////////////
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/////////////////////////////////////////////////////////////////////////////////
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private static Type GetSqlCeType(string typeName)
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{
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// Try versionless
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Type t = Type.GetType("System.Data.SqlServerCe." + typeName + ", System.Data.SqlServerCe",
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false, true);
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if (t != null)
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return t;
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// Try version 3.5
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t = Type.GetType("System.Data.SqlServerCe." + typeName +
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", System.Data.SqlServerCe, Version=3.5.0.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91",
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false, true);
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if (t != null)
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return t;
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// Try version 3.0
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t = Type.GetType("System.Data.SqlServerCe." + typeName +
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", System.Data.SqlServerCe, Version=3.0.3600.0, Culture=neutral, PublicKeyToken=3be235df1c8d2ad3",
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false, true);
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if (t != null)
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return t;
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// Call 3.5 again to throw error
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return Type.GetType("System.Data.SqlServerCe." + typeName +
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", System.Data.SqlServerCe, Version=3.5.0.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91",
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true, true);
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}
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/////////////////////////////////////////////////////////////////////////////////
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/////////////////////////////////////////////////////////////////////////////////
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private static DbConnection CreateNewSqlCeConnection(string connectionString, bool openConn)
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{
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if (_SqlCeConnectionType == null)
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_SqlCeConnectionType = GetSqlCeType("SqlCeConnection");
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DbConnection conn = (DbConnection) Activator.CreateInstance(_SqlCeConnectionType, new object[] {connectionString});
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if (openConn)
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conn.Open();
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return conn;
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}
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/////////////////////////////////////////////////////////////////////////////////
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/////////////////////////////////////////////////////////////////////////////////
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private static void AddSqlCeParameter(DbCommand cmd, string paramName, object paramValue)
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{
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if (_SqlCeParamType == null)
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_SqlCeParamType = GetSqlCeType("SqlCeParameter");
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cmd.Parameters.Add((DbParameter) Activator.CreateInstance(_SqlCeParamType, new object[]{paramName, paramValue}));
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}
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/////////////////////////////////////////////////////////////////////////////////
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/////////////////////////////////////////////////////////////////////////////////
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internal static string GetFullDBFileName(string username, string extension)
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{
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return Path.Combine(Application.UserAppDataPath, GetPartialDBFileName(username, extension));
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}
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internal static string GetPartialDBFileName(string username, string extension)
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{
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if (string.IsNullOrEmpty(username)) {
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return "Application" + extension;
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}
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char[] usernameChars = username.ToCharArray();
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for (int iter = 0; iter < usernameChars.Length; iter++)
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if (!char.IsLetterOrDigit(usernameChars[iter]))
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usernameChars[iter] = '_';
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return "User_" + new string(usernameChars) + extension;
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}
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}
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}
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