svn add I fail it

git-svn-id: http://svn.inspircd.org/repository/trunk/inspircd@7562 e03df62e-2008-0410-955e-edbf42e46eb7

2 files changed, 206 insertions, 0 deletions

diff --git a/include/filelogger.h b/include/filelogger.h
new file mode 100644
index 000000000..ab92e8cde
--- /dev/null
+++ b/include/filelogger.h
@@ -0,0 +1,98 @@
+/*       +------------------------------------+
+ *       | Inspire Internet Relay Chat Daemon |
+ *       +------------------------------------+
+ *
+ *  InspIRCd: (C) 2002-2007 InspIRCd Development Team
+ * See: http://www.inspircd.org/wiki/index.php/Credits
+ *
+ * This program is free but copyrighted software; see
+ *      the file COPYING for details.
+ *
+ * ---------------------------------------------------
+ */
+
+#ifndef __LOG_H__
+#define __LOG_H__
+
+#include <time.h>
+#include <string>
+#include <sstream>
+#include "socketengine.h"
+
+
+/** Debug levels for use with InspIRCd::Log()
+ *  */
+enum DebugLevel
+{
+    DEBUG       =   10,
+    VERBOSE     =   20,
+    DEFAULT     =   30,
+    SPARSE      =   40,
+    NONE        =   50
+};
+
+
+/* Forward declaration -- required */
+class InspIRCd;
+
+/** This class implements a nonblocking log-writer.
+ * Most people writing an ircd give little thought to their disk
+ * i/o. On a congested system, disk writes can block for long
+ * periods of time (e.g. if the system is busy and/or swapping
+ * a lot). If we just use a blocking fprintf() call, this could
+ * block for undesirable amounts of time (half of a second through
+ * to whole seconds). We DO NOT want this, so we make our logfile
+ * nonblocking and hook it into the SocketEngine.
+ * NB: If the operating system does not support nonblocking file
+ * I/O (linux seems to, as does freebsd) this will default to
+ * blocking behaviour.
+ */
+class CoreExport FileLogger : public EventHandler
+{
+ protected:
+	/** The creator/owner of this object
+	 */
+    InspIRCd* ServerInstance;
+	/** The log file (fd is inside this somewhere,
+	 * we get it out with fileno())
+	 */
+	FILE* log;
+	/** Buffer of pending log lines to be written
+	 */
+	std::string buffer;
+	/** Number of write operations that have occured
+	 */
+	int writeops;
+ public:
+	/** The constructor takes an already opened logfile.
+	 */
+	FileLogger(InspIRCd* Instance, FILE* logfile);
+	/** This returns false, logfiles are writeable.
+	 */
+	virtual bool Readable();
+	/** Handle pending write events.
+	 * This will flush any waiting data to disk.
+	 * If any data remains after the fprintf call,
+	 * another write event is scheduled to write
+	 * the rest of the data when possible.
+	 */
+	virtual void HandleEvent(EventType et, int errornum = 0);
+	/** Write one or more preformatted log lines.
+	 * If the data cannot be written immediately,
+	 * this class will insert itself into the
+	 * SocketEngine, and register a write event,
+	 * and when the write event occurs it will
+	 * attempt again to write the data.
+	 */
+	void WriteLogLine(const std::string &line);
+	/** Close the log file and cancel any events.
+	 */
+	virtual void Close();
+	/** Close the log file and cancel any events.
+	 * (indirectly call Close()
+	 */
+	virtual ~FileLogger();
+};
+
+
+#endif
diff --git a/src/filelogger.cpp b/src/filelogger.cpp
new file mode 100644
index 000000000..5fcd58f15
--- /dev/null
+++ b/src/filelogger.cpp
@@ -0,0 +1,108 @@
+/*       +------------------------------------+
+ *       | Inspire Internet Relay Chat Daemon |
+ *       +------------------------------------+
+ *
+ *  InspIRCd: (C) 2002-2007 InspIRCd Development Team
+ * See: http://www.inspircd.org/wiki/index.php/Credits
+ *
+ * This program is free but copyrighted software; see
+ *            the file COPYING for details.
+ *
+ * ---------------------------------------------------
+ */
+
+#include <time.h>
+#include <string>
+#include <sstream>
+#include <fstream>
+#include "socketengine.h"
+#include "inspircd_se_config.h"
+#include "filelogger.h"
+
+FileLogger::FileLogger(InspIRCd* Instance, FILE* logfile)
+: ServerInstance(Instance), log(logfile), writeops(0)
+{
+	if (log)
+	{
+		irc::sockets::NonBlocking(fileno(log));
+		SetFd(fileno(log));
+		buffer.clear();
+	}
+}
+
+bool FileLogger::Readable()
+{
+	return false;
+}
+    
+void FileLogger::HandleEvent(EventType et, int errornum)
+{
+	WriteLogLine("");
+	if (log)
+		ServerInstance->SE->DelFd(this);
+}
+
+void FileLogger::WriteLogLine(const std::string &line)
+{
+	if (line.length())
+		buffer.append(line);
+
+	if (log)
+	{
+		int written = fprintf(log,"%s",buffer.c_str());
+#ifdef WINDOWS
+		buffer.clear();
+#else
+		if ((written >= 0) && (written < (int)buffer.length()))
+		{
+			buffer.erase(0, buffer.length());
+			ServerInstance->SE->AddFd(this);
+		}
+		else if (written == -1)
+		{
+			if (errno == EAGAIN)
+				ServerInstance->SE->AddFd(this);
+		}
+		else
+		{
+			/* Wrote the whole buffer, and no need for write callback */
+			buffer.clear();
+		}
+#endif
+		if (writeops++ % 20)
+		{
+			fflush(log);
+		}
+	}
+}
+
+void FileLogger::Close()
+{
+	if (log)
+	{
+		/* Burlex: Windows assumes nonblocking on FILE* pointers anyway, and also "file" fd's aren't the same
+		 * as socket fd's.
+		 */
+#ifndef WIN32
+		int flags = fcntl(fileno(log), F_GETFL, 0);
+		fcntl(fileno(log), F_SETFL, flags ^ O_NONBLOCK);
+#endif
+		if (buffer.size())
+			fprintf(log,"%s",buffer.c_str());
+
+#ifndef WINDOWS
+		ServerInstance->SE->DelFd(this);
+#endif
+
+		fflush(log);
+		fclose(log);
+	}
+
+	buffer.clear();
+}
+
+FileLogger::~FileLogger()
+{
+	this->Close();
+}
+