src/Logger.h

   1 //
   2 // This file is part of the aMule Project.
   3 //
   4 // Copyright (c) 2005-2011 aMule Team ( admin@amule.org / http://www.amule.org )
   5 //
   6 // Any parts of this program derived from the xMule, lMule or eMule project,
   7 // or contributed by third-party developers are copyrighted by their
   8 // respective authors.
   9 //
  10 // This program is free software; you can redistribute it and/or modify
  11 // it under the terms of the GNU General Public License as published by
  12 // the Free Software Foundation; either version 2 of the License, or
  13 // (at your option) any later version.
  14 //
  15 // This program is distributed in the hope that it will be useful,
  16 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 // GNU General Public License for more details.
  19 //
  20 // You should have received a copy of the GNU General Public License
  21 // along with this program; if not, write to the Free Software
  22 // Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301, USA
  23 //
  24
  25 #ifndef LOGGER_H
  26 #define LOGGER_H
  27
  28 #include <wx/log.h>
  29 #include <wx/event.h>
  30 #include <iosfwd>
  31
  32
  33 enum DebugType
  34 {
  35         //! Standard warning, not debug
  36         logStandard = -1,
  37         //! General warnings/errors.
  38         logGeneral = 0,
  39         //! Warnings/Errors for the main hashing thread.
  40         logHasher,
  41         //! Warnings/Errors for client-objects.
  42         logClient,
  43         //! Warnings/Errors for the local client protocol.
  44         logLocalClient,
  45         //! Warnings/Errors for the remote client protocol.
  46         logRemoteClient,
  47         //! Warnings/Errors when parsing packets.
  48         logPacketErrors,
  49         //! Warnings/Errors for the CFile class.
  50         logCFile,
  51         //! Warnings/Errors related to reading/writing files.
  52         logFileIO,
  53         //! Warnings/Errors when using the zLib library.
  54         logZLib,
  55         //! Warnings/Errors for the AICH-syncronization thread.
  56         logAICHThread,
  57         //! Warnings/Errors for transfering AICH hash-sets.
  58         logAICHTransfer,
  59         //! Warnings/Errors when recovering with AICH.
  60         logAICHRecovery,
  61         //! Warnings/Errors for the CListenSocket class.
  62         logListenSocket,
  63         //! Warnings/Errors for Client-Credits.
  64         logCredits,
  65         //! Warnings/Errors for the client UDP socket.
  66         logClientUDP,
  67         //! Warnings/Errors for the download-queue.
  68         logDownloadQueue,
  69         //! Warnings/Errors for the IP-Filter.
  70         logIPFilter,
  71         //! Warnings/Errors for known-files.
  72         logKnownFiles,
  73         //! Warnings/Errors for part-files.
  74         logPartFile,
  75         //! Warnings/Errors for SHA-hashset creation.
  76         logSHAHashSet,
  77         //! Warnings/Errors for servers, server connections.
  78         logServer,
  79         //! Warnings/Errors for proxy.
  80         logProxy,
  81         //! Warnings/Errors related to searching.
  82         logSearch,
  83         //! Warnings/Errors related to the server UDP socket.
  84         logServerUDP,
  85         //! Warning/Errors related to Kademlia UDP comunication on client
  86         logClientKadUDP,
  87         //! Warning/Errors related to Kademlia Search
  88         logKadSearch,
  89         //! Warning/Errors related to Kademlia Routing
  90         logKadRouting,
  91         //! Warning/Errors related to Kademlia Indexing
  92         logKadIndex,
  93         //! Warning/Errors related to Kademlia Main Thread
  94         logKadMain,
  95         //! Warning/Errors related to Kademlia Preferences
  96         logKadPrefs,
  97         //! Warnings/Errors related to partfile importer
  98         logPfConvert,
  99         //! Warnings/Errors related to the basic UDP socket-class.
 100         logMuleUDP,
 101         //! Warnings/Errors related to the thread-scheduler.
 102         logThreads,
 103         //! Warnings/Errors related to the Universal Plug and Play subsystem.
 104         logUPnP,
 105         //! Warnings/Errors related to the UDP Firewall Tester
 106         logKadUdpFwTester,
 107         //! Warnings/Errors related to Kad packet tracking.
 108         logKadPacketTracking,
 109         //! Warnings/Errors related to Kad entry tracking.
 110         logKadEntryTracking,
 111         //! Full log of external connection packets
 112         logEC,
 113         //! Warnings/Errors related to HTTP traffic
 114         logHTTP,
 115         //! Warnings/Errors related to Boost Asio networking
 116         logAsio
 117         // IMPORTANT NOTE: when you add values to this enum, update the g_debugcats
 118         // array in Logger.cpp!
 119 };
 120
 121
 122
 123 /**
 124  * Container-class for the debugging categories.
 125  */
 126 class CDebugCategory
 127 {
 128 public:
 129         /**
 130          * Constructor.
 131          *
 132          * @param type The actual debug-category type.
 133          * @param name The user-readable name.
 134          */
 135         CDebugCategory( DebugType type, const wxString& name )
 136                 : m_name(name), m_type(type), m_enabled(false)
 137         {}
 138
 139
 140         /**
 141          * Returns true if the category is enabled.
 142          */
 143         bool IsEnabled() const          { return m_enabled; }
 144
 145         /**
 146          * Enables/Disables the category.
 147          */
 148         void SetEnabled( bool enabled ) { m_enabled = enabled; }
 149
 150
 151         /**
 152          * Returns the user-readable name.
 153          */
 154         const wxString& GetName() const { return m_name; }
 155
 156         /**
 157          * Returns the actual type.
 158          */
 159         DebugType GetType() const       { return m_type; }
 160
 161 private:
 162         //! The user-readable name.
 163         wxString        m_name;
 164         //! The actual type.
 165         DebugType       m_type;
 166         //! Whenever or not the category is enabled.
 167         bool            m_enabled;
 168 };
 169
 170
 171 /**
 172  * Functions for logging operations.
 173  */
 174 class CLogger: public wxEvtHandler
 175 {
 176 public:
 177         /**
 178          * Returns true if debug-messages should be generated for a specific category.
 179          */
 180 #ifdef __DEBUG__
 181         bool IsEnabled( DebugType ) const;
 182 #else
 183         bool IsEnabled( DebugType ) const       { return false; }
 184 #endif
 185
 186         /**
 187          * Enables or disables debug-messages for a specific category.
 188          */
 189         void SetEnabled( DebugType type, bool enabled );
 190
 191         /**
 192          * Returns true if logging to stdout is enabled
 193          */
 194         bool IsEnabledStdoutLog() const         { return m_StdoutLog; }
 195
 196         /**
 197          * Enables or disables logging to stdout.
 198          */
 199         void SetEnabledStdoutLog(bool enabled)  { m_StdoutLog = enabled; }
 200
 201
 202         /**
 203          * Logs the specified line of text, prefixed with the name of the DebugType.
 204          * (except for logStandard)
 205          *
 206          * @param file
 207          * @param line
 208          * @param critical If true, then the message will be made visible directly to the user.
 209          * @param type The debug-category, the name of which will be prepended to the line.
 210          * @param str The actual line of text.
 211          *
 212          * This function is thread-safe. If it is called by the main thread, the
 213          * event will be sent directly to the application, otherwise it will be
 214          * queued in the event-loop.
 215          */
 216         void AddLogLine(
 217                 const wxString &file,
 218                 int line,
 219                 bool critical,
 220                 DebugType type,
 221                 const wxString &str,
 222                 bool toStdout = false,
 223                 bool toGUI = true);
 224
 225         // for UPnP
 226         void AddLogLine(
 227                 const wxString &file,
 228                 int line,
 229                 bool critical,
 230                 DebugType type,
 231                 const std::ostringstream &msg);
 232
 233         void AddLogLine(
 234                 const wxString &file,
 235                 int line,
 236                 bool critical,
 237                 const std::ostringstream &msg);
 238
 239
 240         /**
 241          * Emergency log for crashes.
 242          */
 243         void EmergencyLog(const wxString &message, bool closeLog = true);
 244
 245         /**
 246          * Returns a category specified by index.
 247          */
 248         const CDebugCategory&   GetDebugCategory( int index );
 249
 250         /**
 251          * Returns the number of debug-categories.
 252          */
 253         unsigned int GetDebugCategoryCount();
 254
 255         /**
 256          * Open Logfile, true on success
 257          */
 258         bool OpenLogfile(const wxString & name);
 259
 260         /**
 261          * Close Logfile
 262          */
 263         void CloseLogfile();
 264
 265         /**
 266          * Get name of Logfile
 267          */
 268         const wxString & GetLogfileName() const {
 269                 return m_LogfileName;
 270         }
 271
 272         /**
 273          * Event handler
 274          */
 275         void OnLoggingEvent(class CLoggingEvent& evt);
 276
 277         /**
 278          * Construct
 279          */
 280         CLogger() {
 281                 applog = NULL;
 282                 m_StdoutLog = false;
 283                 m_count = 0;
 284         }
 285
 286 private:
 287         class wxFFileOutputStream* applog;      // the logfile
 288         wxString m_LogfileName;
 289         wxString m_ApplogBuf;
 290         bool m_StdoutLog;
 291         int  m_count;                   // output line counter
 292         wxMutex m_lineLock;
 293
 294         /**
 295          * Write all waiting log info to the logfile
 296          */
 297         void FlushApplog();
 298
 299         /**
 300          * Really output a single line
 301          */
 302         void DoLine(const wxString & line, bool toStdout, bool toGUI);
 303
 304         /**
 305          * Really output several lines
 306          */
 307         void DoLines(const wxString & lines, bool critical, bool toStdout, bool toGUI);
 308
 309         DECLARE_EVENT_TABLE()
 310 };
 311
 312 extern CLogger theLogger;
 313
 314 /**
 315  * This class forwards log-lines from wxWidgets to CLogger.
 316  */
 317 class CLoggerTarget : public wxLog
 318 {
 319 public:
 320         CLoggerTarget();
 321
 322         /**
 323          * @see wxLog::DoLogString
 324          */
 325 #if wxCHECK_VERSION(2, 9, 0)
 326         void DoLogText(const wxString &msg);
 327 #else
 328         void DoLogString(const wxChar *msg, time_t);
 329 #endif
 330 };
 331
 332
 333 DECLARE_LOCAL_EVENT_TYPE(MULE_EVT_LOGLINE, -1)
 334
 335
 336 /** This event is sent when a log-line is queued. */
 337 class CLoggingEvent : public wxEvent
 338 {
 339 public:
 340         CLoggingEvent(bool critical, bool toStdout, bool toGUI, const wxString& msg)
 341                 : wxEvent(-1, MULE_EVT_LOGLINE)
 342                 , m_critical(critical)
 343                 , m_stdout(toStdout)
 344                 , m_GUI(toGUI)
 345                 // Deep copy, to avoid thread-unsafe reference counting. */
 346                 , m_msg(msg.c_str(), msg.Length())
 347         {
 348         }
 349
 350         const wxString& Message() const {
 351                 return m_msg;
 352         }
 353
 354         bool IsCritical() const {
 355                 return m_critical;
 356         }
 357
 358         bool ToStdout() const {
 359                 return m_stdout;
 360         }
 361
 362         bool ToGUI() const {
 363                 return m_GUI;
 364         }
 365
 366         wxEvent* Clone() const {
 367                 return new CLoggingEvent(m_critical, m_stdout, m_GUI, m_msg);
 368         }
 369
 370 private:
 371         bool            m_critical;
 372         bool            m_stdout;
 373         bool            m_GUI;
 374         wxString        m_msg;
 375 };
 376
 377
 378 typedef void (wxEvtHandler::*MuleLogEventFunction)(CLoggingEvent&);
 379
 380 //! Event-handler for completed hashings of new shared files and partfiles.
 381 #define EVT_MULE_LOGGING(func) \
 382         DECLARE_EVENT_TABLE_ENTRY(MULE_EVT_LOGLINE, -1, -1, \
 383         (wxObjectEventFunction) (wxEventFunction) \
 384         wxStaticCastEvent(MuleLogEventFunction, &func), (wxObject*) NULL),
 385
 386
 387 // access the logfile for EC
 388 class CLoggerAccess
 389 {
 390 private:
 391         class wxFFileInputStream * m_logfile;
 392         class wxCharBuffer * m_buffer;
 393         size_t m_bufferlen;
 394         size_t m_pos;
 395
 396         bool m_ready;
 397 public:
 398         //
 399         // construct/destruct
 400         //
 401         CLoggerAccess();
 402         ~CLoggerAccess();
 403         //
 404         // Reset (used when logfile is cleared)
 405         //
 406         void Reset();
 407         //
 408         // get a String (if there is one)
 409         //
 410         bool GetString(wxString & s);
 411         //
 412         // is a String available ?
 413         //
 414         bool HasString();
 415 };
 416
 417
 418 /**
 419  * These macros should be used when logging. The
 420  * AddLogLineM macro will simply call one of the
 421  * two CLogger::AddLogLine functions depending on
 422  * parameters, but AddDebugLogLine* will only log
 423  * a message if the message is either critical or
 424  * the specified debug-type is enabled in the
 425  * preferences.
 426  * AddLogLineMS will also always print to stdout.
 427  */
 428 #ifdef MULEUNIT
 429         #define AddDebugLogLineN(...) do {} while (false)
 430         #define AddLogLineN(...) do {} while (false)
 431         #define AddLogLineNS(...) do {} while (false)
 432         #define AddDebugLogLineC(...) do {} while (false)
 433         #define AddLogLineC(...) do {} while (false)
 434         #define AddLogLineCS(...) do {} while (false)
 435 #else
 436 // Macro for UPnP. This is not a debug macro, but wants its category printed nevertheless (sigh).
 437         #define AddLogLineU(critical, type, string) theLogger.AddLogLine(__TFILE__, __LINE__, critical, type, string)
 438 // Macros for 'N'on critical logging
 439         #ifdef __DEBUG__
 440                 #define AddDebugLogLineN(type, string) if (theLogger.IsEnabled(type)) theLogger.AddLogLine(__TFILE__, __LINE__, false, type, string)
 441         #else
 442                 #define AddDebugLogLineN(type, string)  do {} while (false)
 443         #endif
 444         #define AddLogLineN(string) theLogger.AddLogLine(__TFILE__, __LINE__, false, logStandard, string)
 445         #define AddLogLineNS(string) theLogger.AddLogLine(__TFILE__, __LINE__, false, logStandard, string, true)
 446 // Macros for 'C'ritical logging
 447         #define AddDebugLogLineC(type, string) theLogger.AddLogLine(__TFILE__, __LINE__, true, type, string)
 448         #define AddLogLineC(string) theLogger.AddLogLine(__TFILE__, __LINE__, true, logStandard, string)
 449         #define AddLogLineCS(string) theLogger.AddLogLine(__TFILE__, __LINE__, true, logStandard, string, true)
 450 // Macros for logging to logfile only
 451         #ifdef __DEBUG__
 452                 #define AddDebugLogLineF(type, string) if (theLogger.IsEnabled(type)) theLogger.AddLogLine(__TFILE__, __LINE__, false, type, string, false, false)
 453         #else
 454                 #define AddDebugLogLineF(type, string)  do {} while (false)
 455         #endif
 456         #define AddLogLineF(string) theLogger.AddLogLine(__TFILE__, __LINE__, false, logStandard, string, false, false)
 457 #endif
 458
 459 #endif
 460 // File_checked_for_headers