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304 lines
10 KiB
C#
304 lines
10 KiB
C#
/******************************************************************************
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// Canary Islands Computer Museum Website
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// ----------------------------------------------------------------------------
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//
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// Filename : Log.cs
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// Author(s) : Natalia Portillo <claunia@claunia.com>
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//
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// --[ Description ] ----------------------------------------------------------
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//
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// Contains operations to manage log entries.
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//
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// --[ License ] --------------------------------------------------------------
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as
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// published by the Free Software Foundation, either version 3 of the
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// License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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//
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// ----------------------------------------------------------------------------
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// Copyright © 2003-2018 Natalia Portillo
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*******************************************************************************/
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using System;
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using System.Collections.Generic;
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using System.Data;
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using Cicm.Database.Schemas;
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namespace Cicm.Database
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{
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public partial class Operations
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{
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/// <summary>
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/// Gets all log entries
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/// </summary>
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/// <param name="entries">All log entries</param>
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/// <returns><c>true</c> if <see cref="entries" /> is correct, <c>false</c> otherwise</returns>
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public bool GetLogs(out List<Log> entries)
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{
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#if DEBUG
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Console.WriteLine("Getting all logs...");
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#endif
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try
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{
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const string SQL = "SELECT * from log";
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IDbCommand dbCmd = dbCon.CreateCommand();
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IDbDataAdapter dataAdapter = dbCore.GetNewDataAdapter();
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dbCmd.CommandText = SQL;
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DataSet dataSet = new DataSet();
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dataAdapter.SelectCommand = dbCmd;
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dataAdapter.Fill(dataSet);
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entries = LogsFromDataTable(dataSet.Tables[0]);
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return true;
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}
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catch(Exception ex)
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{
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Console.WriteLine("Error getting logs.");
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Console.WriteLine(ex);
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entries = null;
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return false;
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}
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}
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/// <summary>
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/// Gets the specified number of log entries since the specified start
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/// </summary>
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/// <param name="entries">List of log entries</param>
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/// <param name="start">Start of query</param>
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/// <param name="count">How many entries to retrieve</param>
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/// <returns><c>true</c> if <see cref="entries" /> is correct, <c>false</c> otherwise</returns>
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public bool GetLogs(out List<Log> entries, ulong start, ulong count)
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{
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#if DEBUG
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Console.WriteLine("Getting {0} logs from {1}...", count, start);
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#endif
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try
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{
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string sql = $"SELECT * FROM log LIMIT {start}, {count}";
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IDbCommand dbCmd = dbCon.CreateCommand();
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IDbDataAdapter dataAdapter = dbCore.GetNewDataAdapter();
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dbCmd.CommandText = sql;
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DataSet dataSet = new DataSet();
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dataAdapter.SelectCommand = dbCmd;
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dataAdapter.Fill(dataSet);
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entries = LogsFromDataTable(dataSet.Tables[0]);
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return true;
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}
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catch(Exception ex)
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{
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Console.WriteLine("Error getting logs.");
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Console.WriteLine(ex);
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entries = null;
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return false;
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}
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}
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/// <summary>
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/// Gets log entry by specified id
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/// </summary>
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/// <param name="id">Id</param>
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/// <returns>Log entry with specified id, <c>null</c> if not found or error</returns>
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public Log GetLog(int id)
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{
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#if DEBUG
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Console.WriteLine("Getting log with id {0}...", id);
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#endif
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try
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{
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string sql = $"SELECT * from log WHERE id = '{id}'";
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IDbCommand dbCmd = dbCon.CreateCommand();
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IDbDataAdapter dataAdapter = dbCore.GetNewDataAdapter();
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dbCmd.CommandText = sql;
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DataSet dataSet = new DataSet();
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dataAdapter.SelectCommand = dbCmd;
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dataAdapter.Fill(dataSet);
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List<Log> entries = LogsFromDataTable(dataSet.Tables[0]);
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return entries == null || entries.Count == 0 ? null : entries[0];
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}
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catch(Exception ex)
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{
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Console.WriteLine("Error getting log.");
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Console.WriteLine(ex);
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return null;
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}
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}
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/// <summary>
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/// Counts the number of log entries in the database
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/// </summary>
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/// <returns>Entries in database</returns>
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public long CountLogs()
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{
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#if DEBUG
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Console.WriteLine("Counting logs...");
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#endif
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IDbCommand dbcmd = dbCon.CreateCommand();
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dbcmd.CommandText = "SELECT COUNT(*) FROM log";
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object count = dbcmd.ExecuteScalar();
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dbcmd.Dispose();
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try { return Convert.ToInt64(count); }
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catch { return 0; }
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}
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/// <summary>
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/// Adds a new access log entry to the database
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/// </summary>
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/// <param name="entry">Entry to add</param>
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/// <param name="id">ID of added entry</param>
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/// <returns><c>true</c> if added correctly, <c>false</c> otherwise</returns>
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public bool AddLog(Log entry, out long id)
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{
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#if DEBUG
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Console.Write("Adding log `{0}`...", entry.UserAgent);
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#endif
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IDbCommand dbcmd = GetCommandLog(entry);
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IDbTransaction trans = dbCon.BeginTransaction();
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dbcmd.Transaction = trans;
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const string SQL = "INSERT INTO log (browser, date, ip, referer)" +
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" VALUES (@browser, @date, @ip, @referer)";
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dbcmd.CommandText = SQL;
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dbcmd.ExecuteNonQuery();
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trans.Commit();
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dbcmd.Dispose();
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id = dbCore.LastInsertRowId;
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#if DEBUG
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Console.WriteLine(" id {0}", id);
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#endif
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return true;
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}
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/// <summary>
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/// Updated an access log in the database
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/// </summary>
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/// <param name="entry">Updated entry</param>
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/// <returns><c>true</c> if updated correctly, <c>false</c> otherwise</returns>
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public bool UpdateLog(Log entry)
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{
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#if DEBUG
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Console.WriteLine("Updating log `{0}`...", entry.UserAgent);
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#endif
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IDbCommand dbcmd = GetCommandLog(entry);
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IDbTransaction trans = dbCon.BeginTransaction();
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dbcmd.Transaction = trans;
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string sql = "UPDATE log SET browser = @browser, date = @date, ip = @ip, referer = @referer " +
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$"WHERE id = {entry.Id}";
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dbcmd.CommandText = sql;
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dbcmd.ExecuteNonQuery();
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trans.Commit();
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dbcmd.Dispose();
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return true;
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}
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/// <summary>
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/// Removes an access log entry from the database
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/// </summary>
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/// <param name="id">ID of entry to remove</param>
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/// <returns><c>true</c> if removed correctly, <c>false</c> otherwise</returns>
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public bool RemoveLog(long id)
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{
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#if DEBUG
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Console.WriteLine("Removing log widh id `{0}`...", id);
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#endif
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IDbCommand dbcmd = dbCon.CreateCommand();
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IDbTransaction trans = dbCon.BeginTransaction();
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dbcmd.Transaction = trans;
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string sql = $"DELETE FROM log WHERE id = '{id}';";
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dbcmd.CommandText = sql;
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dbcmd.ExecuteNonQuery();
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trans.Commit();
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dbcmd.Dispose();
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return true;
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}
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IDbCommand GetCommandLog(Log entry)
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{
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IDbCommand dbcmd = dbCon.CreateCommand();
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IDbDataParameter param1 = dbcmd.CreateParameter();
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IDbDataParameter param2 = dbcmd.CreateParameter();
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IDbDataParameter param3 = dbcmd.CreateParameter();
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IDbDataParameter param4 = dbcmd.CreateParameter();
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param1.ParameterName = "@browser";
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param2.ParameterName = "@date";
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param3.ParameterName = "@ip";
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param4.ParameterName = "@referer";
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param1.DbType = DbType.String;
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param2.DbType = DbType.String;
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param3.DbType = DbType.String;
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param4.DbType = DbType.String;
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param1.Value = entry.UserAgent;
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param2.Value = entry.Date;
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param3.Value = entry.Ip;
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param4.Value = entry.Referer;
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dbcmd.Parameters.Add(param1);
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dbcmd.Parameters.Add(param2);
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dbcmd.Parameters.Add(param3);
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dbcmd.Parameters.Add(param4);
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return dbcmd;
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}
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static List<Log> LogsFromDataTable(DataTable dataTable)
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{
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List<Log> entries = new List<Log>();
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foreach(DataRow dataRow in dataTable.Rows)
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{
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Log entry = new Log
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{
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Id = (int)dataRow["id"],
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UserAgent = (string)dataRow["browser"],
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Date = (string)dataRow["date"],
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Ip = (string)dataRow["ip"],
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Referer = (string)dataRow["referer"]
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};
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entries.Add(entry);
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}
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return entries;
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}
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}
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} |