/// <devdoc>
/// </devdoc>
internal void Dispose(bool disposing) {
try {
if (disposing) {
//Dispose unmanaged and managed resources
if (IsOpen) {
Close();
}
// This is probably unnecessary
if (readHandle != null) {
readHandle.Close();
readHandle = null;
}
if (writeHandle != null) {
writeHandle.Close();
writeHandle = null;
}
}
}
finally {
messageLibraries = null;
this.boolFlags[Flag_disposed] = true;
}
}
public EventLogInternal(string logName, string machineName, string source, EventLog parent) {
//look out for invalid log names
if (logName == null)
throw new ArgumentNullException("logName");
if (!ValidLogName(logName, true))
throw new ArgumentException(SR.GetString(SR.BadLogName));
if (!SyntaxCheck.CheckMachineName(machineName))
throw new ArgumentException(SR.GetString(SR.InvalidParameter, "machineName", machineName));
EventLogPermission permission = new EventLogPermission(EventLogPermissionAccess.Write, machineName);
permission.Demand();
this.machineName = machineName;
this.logName = logName;
this.sourceName = source;
readHandle = null;
writeHandle = null;
boolFlags[Flag_forwards] = true;
this.parent = parent;
}
private void Close(string currentMachineName) {
EventLogPermission permission = new EventLogPermission(EventLogPermissionAccess.Write, currentMachineName);
permission.Demand();
Debug.WriteLineIf(CompModSwitches.EventLog.TraceVerbose, "EventLog::Close");
//Trace("Close", "Closing the event log");
if (readHandle != null) {
try {
readHandle.Close();
}
catch (IOException) {
throw SharedUtils.CreateSafeWin32Exception();
}
readHandle = null;
//Trace("Close", "Closed read handle");
Debug.WriteLineIf(CompModSwitches.EventLog.TraceVerbose, "EventLog::Close: closed read handle");
}
if (writeHandle != null) {
try {
writeHandle.Close();
}
catch (IOException) {
throw SharedUtils.CreateSafeWin32Exception();
}
writeHandle = null;
//Trace("Close", "Closed write handle");
Debug.WriteLineIf(CompModSwitches.EventLog.TraceVerbose, "EventLog::Close: closed write handle");
}
if (boolFlags[Flag_monitoring])
StopRaisingEvents(/*currentMachineName,*/ GetLogName(currentMachineName));
if (messageLibraries != null) {
foreach (SafeLibraryHandle handle in messageLibraries.Values)
handle.Close();
messageLibraries = null;
}
boolFlags[Flag_sourceVerified] = false;
}
private void OpenForRead(string currentMachineName) {
Debug.WriteLineIf(CompModSwitches.EventLog.TraceVerbose, "EventLog::OpenForRead");
EventLogPermission permission = new EventLogPermission(EventLogPermissionAccess.Administer, currentMachineName);
permission.Demand();
//Cannot allocate the readHandle if the object has been disposed, since finalization has been suppressed.
if (this.boolFlags[Flag_disposed])
throw new ObjectDisposedException(GetType().Name);
string logname = GetLogName(currentMachineName);
if (logname == null || logname.Length==0)
throw new ArgumentException(SR.GetString(SR.MissingLogProperty));
if (!EventLog.Exists(logname, currentMachineName) ) // do not open non-existing Log [[....]]
throw new InvalidOperationException( SR.GetString(SR.LogDoesNotExists, logname, currentMachineName) );
//Check environment before calling api
SharedUtils.CheckEnvironment();
// Clean up cache variables.
// [[....]] The initilizing code is put here to guarantee, that first read of events
// from log file will start by filling up the cache buffer.
lastSeenEntry = 0;
lastSeenPos = 0;
bytesCached = 0;
firstCachedEntry = -1;
SafeEventLogReadHandle handle = SafeEventLogReadHandle.OpenEventLog(currentMachineName, logname);
if (handle.IsInvalid) {
Win32Exception e = null;
if (Marshal.GetLastWin32Error() != 0) {
e = SharedUtils.CreateSafeWin32Exception();
}
throw new InvalidOperationException(SR.GetString(SR.CantOpenLog, logname.ToString(), currentMachineName), e);
}
readHandle = handle;
}
public EventLogInternal(string logName, string machineName, string source, EventLog parent)
{
this.firstCachedEntry = -1;
this.boolFlags = new BitVector32();
if (logName == null)
{
throw new ArgumentNullException("logName");
}
if (!ValidLogName(logName, true))
{
throw new ArgumentException(SR.GetString("BadLogName"));
}
if (!SyntaxCheck.CheckMachineName(machineName))
{
throw new ArgumentException(SR.GetString("InvalidParameter", new object[] { "machineName", machineName }));
}
new EventLogPermission(EventLogPermissionAccess.Write, machineName).Demand();
this.machineName = machineName;
this.logName = logName;
this.sourceName = source;
this.readHandle = null;
this.writeHandle = null;
this.boolFlags[2] = true;
this.m_Parent = parent;
}
internal void Dispose(bool disposing)
{
try
{
if (disposing)
{
if (this.IsOpen)
{
this.Close();
}
if (this.readHandle != null)
{
this.readHandle.Close();
this.readHandle = null;
}
if (this.writeHandle != null)
{
this.writeHandle.Close();
this.writeHandle = null;
}
}
}
finally
{
this.messageLibraries = null;
this.boolFlags[0x100] = true;
}
}
private void Close(string currentMachineName)
{
new EventLogPermission(EventLogPermissionAccess.Write, currentMachineName).Demand();
if (this.readHandle != null)
{
try
{
this.readHandle.Close();
}
catch (IOException)
{
throw SharedUtils.CreateSafeWin32Exception();
}
this.readHandle = null;
}
if (this.writeHandle != null)
{
try
{
this.writeHandle.Close();
}
catch (IOException)
{
throw SharedUtils.CreateSafeWin32Exception();
}
this.writeHandle = null;
}
if (this.boolFlags[8])
{
this.StopRaisingEvents(this.GetLogName(currentMachineName));
}
if (this.messageLibraries != null)
{
foreach (Microsoft.Win32.SafeHandles.SafeLibraryHandle handle in this.messageLibraries.Values)
{
handle.Close();
}
this.messageLibraries = null;
}
this.boolFlags[0x200] = false;
}
private void OpenForRead(string currentMachineName)
{
new EventLogPermission(EventLogPermissionAccess.Administer, currentMachineName).Demand();
if (this.boolFlags[0x100])
{
throw new ObjectDisposedException(base.GetType().Name);
}
string logName = this.GetLogName(currentMachineName);
if ((logName == null) || (logName.Length == 0))
{
throw new ArgumentException(SR.GetString("MissingLogProperty"));
}
if (!Exists(logName, currentMachineName))
{
throw new InvalidOperationException(SR.GetString("LogDoesNotExists", new object[] { logName, currentMachineName }));
}
SharedUtils.CheckEnvironment();
this.lastSeenEntry = 0;
this.lastSeenPos = 0;
this.bytesCached = 0;
this.firstCachedEntry = -1;
this.readHandle = SafeEventLogReadHandle.OpenEventLog(currentMachineName, logName);
if (this.readHandle.IsInvalid)
{
Win32Exception innerException = null;
if (Marshal.GetLastWin32Error() != 0)
{
innerException = SharedUtils.CreateSafeWin32Exception();
}
throw new InvalidOperationException(SR.GetString("CantOpenLog", new object[] { logName.ToString(), currentMachineName }), innerException);
}
}
