internal string FindProxyForURL(string url, string host)
{
if (url == null || host == null)
{
throw new ArgumentNullException(url == null ? "url" : "host");
}
if (closed != 0)
{
throw new ObjectDisposedException(GetType().Name);
}
EXCEPINFO exceptionInfo = new EXCEPINFO();
object result = null;
jscript.GetCurrentScriptThreadID(out interruptThreadId);
TimerThread.Timer timer = s_TimerQueue.CreateTimer(s_InterruptCallback, this);
activeTimer = timer;
try
{
GlobalLog.Print("AutoWebProxyScriptWrapper#" + ValidationHelper.HashString(this) + "::FindProxyForURL() Calling url:" + url + " host:" + host);
result = script.FindProxyForURL(url, host);
}
catch (Exception exception)
{
if (NclUtilities.IsFatal(exception))
{
throw;
}
if (exception is TargetInvocationException)
{
exception = exception.InnerException;
}
COMException comException = exception as COMException;
if (comException == null || comException.ErrorCode != (int)HRESULT.SCRIPT_E_REPORTED)
{
throw;
}
GlobalLog.Print("AutoWebProxyScriptWrapper#" + ValidationHelper.HashString(this) + "::FindProxyForURL() Script error:[" + this.host.ExceptionMessage == null ? "" : this.host.ExceptionMessage + "]");
}
catch {
GlobalLog.Print("AutoWebProxyScriptWrapper#" + ValidationHelper.HashString(this) + "::FindProxyForURL() Script error:[Non-CLS Compliant Exception]");
throw;
}
finally
{
activeTimer = null;
timer.Cancel();
}
string proxy = result as string;
if (proxy != null)
{
GlobalLog.Print("AutoWebProxyScriptWrapper#" + ValidationHelper.HashString(this) + "::FindProxyForURL() found:" + proxy);
return(proxy);
}
GlobalLog.Print("AutoWebProxyScriptWrapper#" + ValidationHelper.HashString(this) + "::FindProxyForURL() Returning null. result:" + ValidationHelper.ToString(exceptionInfo.bstrDescription) + " result:" + ValidationHelper.ToString(result) + " error:" + ValidationHelper.ToString(exceptionInfo.bstrDescription));
return(null);
}
internal void Close()
{
if (Interlocked.Increment(ref closed) != 1)
{
return;
}
GlobalLog.Print("AutoWebProxyScriptWrapper#" + ValidationHelper.HashString(this) + "::Close() Closing engine.");
// Time out any running thread.
TimerThread.Timer timer = activeTimer;
if (timer != null)
{
if (timer.Cancel())
{
InterruptCallback(timer, 0, this);
}
activeTimer = null;
}
jscript.Close();
jscriptObject = null;
jscript = null;
host = null;
jscriptParser = null;
dispatch = null;
script = null;
scriptText = null;
lastModified = DateTime.MinValue;
}
internal void CancelIdleTimer()
{
lock (m_ConnectionList) {
TimerThread.Timer timer = m_ExpiringTimer;
m_ExpiringTimer = null;
if (timer != null)
{
timer.Cancel();
}
}
}
private void CancelErrorCallback()
{
TimerThread.Timer errorTimer = this.m_ErrorTimer;
if ((errorTimer != null) && errorTimer.Cancel())
{
this.m_ErrorOccured = false;
this.ErrorEvent.Reset();
this.m_ErrorTimer = null;
this.m_ResError = null;
}
}
/// <summary>
/// <para>Called on error, after we waited a set amount of time from aborting</para>
/// </summary>
private void CancelErrorCallback()
{
TimerThread.Timer timer = m_ErrorTimer;
if (timer != null && timer.Cancel())
{
m_ErrorOccured = false;
ErrorEvent.Reset();
m_ErrorTimer = null;
m_ResError = null;
}
}
internal AutoWebProxyState Compile(Uri engineScriptLocation, string scriptBody, byte[] buffer)
{
if (closed != 0)
{
throw new ObjectDisposedException(GetType().Name);
}
if (jscriptObject != null)
{
jscript.Close();
}
scriptText = null;
scriptBytes = null;
jscriptObject = new JScriptEngine();
jscript = (IActiveScript)jscriptObject;
host = new ScriptHost();
GlobalLog.Print("AutoWebProxyScriptWrapper#" + ValidationHelper.HashString(this) + "::Compile() Binding to ScriptHost#" + ValidationHelper.HashString(this));
jscriptParser = new ActiveScriptParseWrapper(jscriptObject);
jscriptParser.InitNew();
jscript.SetScriptSite(host);
jscript.SetScriptState(ScriptState.Initialized);
//
// Inform the script engine that this host implements the IInternetHostSecurityManager interface, which
// is used to prevent the script code from using any ActiveX objects.
//
IObjectSafety objSafety = jscript as IObjectSafety;
if (objSafety != null)
{
Guid guid = Guid.Empty;
GlobalLog.Print("AutoWebProxyScriptWrapper#" + ValidationHelper.HashString(this) + "::Compile() Setting up IInternetHostSecurityManager");
objSafety.SetInterfaceSafetyOptions(ref guid, ComConstants.INTERFACE_USES_SECURITY_MANAGER, ComConstants.INTERFACE_USES_SECURITY_MANAGER);
objSafety = null;
}
EXCEPINFO exceptionInfo = new EXCEPINFO();
object result = null;
try
{
jscriptParser.ParseScriptText(scriptBody, null, null, null, IntPtr.Zero, 0, ScriptText.IsPersistent | ScriptText.IsVisible, out result, out exceptionInfo);
GlobalLog.Print("AutoWebProxyScriptWrapper#" + ValidationHelper.HashString(this) + "::Compile() ParseScriptText() success:" + ValidationHelper.ToString(exceptionInfo.bstrDescription) + " result:" + ValidationHelper.ToString(result));
}
catch (Exception exception)
{
if (NclUtilities.IsFatal(exception))
{
throw;
}
if (exception is TargetInvocationException)
{
exception = exception.InnerException;
}
COMException comException = exception as COMException;
if (comException == null || comException.ErrorCode != (int)HRESULT.SCRIPT_E_REPORTED)
{
throw;
}
GlobalLog.Print("AutoWebProxyScriptWrapper#" + ValidationHelper.HashString(this) + "::Compile() Script load error:[" + host.ExceptionMessage == null ? "" : host.ExceptionMessage + "]");
throw new COMException(SR.GetString(SR.net_jscript_load, host.ExceptionMessage), comException.ErrorCode);
}
catch {
GlobalLog.Print("AutoWebProxyScriptWrapper#" + ValidationHelper.HashString(this) + "::Compile() Script load error:[Non-CLS Compliant Exception]");
throw;
}
jscript.AddNamedItem(c_ScriptHelperName, ScriptItem.GlobalMembers | ScriptItem.IsPersistent | ScriptItem.IsVisible);
// This part can run global code - time it out if necessary.
jscript.GetCurrentScriptThreadID(out interruptThreadId);
TimerThread.Timer timer = s_TimerQueue.CreateTimer(s_InterruptCallback, this);
activeTimer = timer;
try
{
jscript.SetScriptState(ScriptState.Started);
jscript.SetScriptState(ScriptState.Connected);
}
finally
{
activeTimer = null;
timer.Cancel();
}
jscript.GetScriptDispatch(null, out script);
GlobalLog.Print("AutoWebProxyScriptWrapper#" + ValidationHelper.HashString(this) + "::Compile() Got IDispatch:" + ValidationHelper.ToString(dispatch));
scriptText = scriptBody;
scriptBytes = buffer;
return(AutoWebProxyState.CompilationSuccess);
}
// Downloads and compiles the script from a given Uri.
// This code can be called by config for a downloaded control, we need to assert.
// This code is called holding the lock.
private AutoWebProxyState DownloadAndCompile(Uri location)
{
GlobalLog.Print("NetWebProxyFinder#" + ValidationHelper.HashString(this) + "::DownloadAndCompile() location:" + ValidationHelper.ToString(location));
AutoWebProxyState newState = AutoWebProxyState.DownloadFailure;
WebResponse response = null;
TimerThread.Timer timer = null;
AutoWebProxyScriptWrapper newScriptInstance = null;
// Can't assert this in declarative form (DCR?). This Assert() is needed to be able to create the request to download the proxy script.
ExceptionHelper.WebPermissionUnrestricted.Assert();
try
{
lock (lockObject)
{
if (aborted)
{
throw new WebException(NetRes.GetWebStatusString("net_requestaborted",
WebExceptionStatus.RequestCanceled), WebExceptionStatus.RequestCanceled);
}
request = WebRequest.Create(location);
}
request.Timeout = Timeout.Infinite;
request.CachePolicy = new RequestCachePolicy(RequestCacheLevel.Default);
request.ConnectionGroupName = "__WebProxyScript";
// We have an opportunity here, if caching is disabled AppDomain-wide, to override it with a
// custom, trivial cache-provider to get a similar semantic.
//
// We also want to have a backup caching key in the case when IE has locked an expired script response
//
if (request.CacheProtocol != null)
{
GlobalLog.Print("NetWebProxyFinder#" + ValidationHelper.HashString(this) + "::DownloadAndCompile() Using backup caching.");
request.CacheProtocol = new RequestCacheProtocol(backupCache, request.CacheProtocol.Validator);
}
HttpWebRequest httpWebRequest = request as HttpWebRequest;
if (httpWebRequest != null)
{
httpWebRequest.Accept = "*/*";
httpWebRequest.UserAgent = this.GetType().FullName + "/" + Environment.Version;
httpWebRequest.KeepAlive = false;
httpWebRequest.Pipelined = false;
httpWebRequest.InternalConnectionGroup = true;
}
else
{
FtpWebRequest ftpWebRequest = request as FtpWebRequest;
if (ftpWebRequest != null)
{
ftpWebRequest.KeepAlive = false;
}
}
// Use no proxy, default cache - initiate the download.
request.Proxy = null;
request.Credentials = Engine.Credentials;
// Use our own timeout timer so that it can encompass the whole request, not just the headers.
if (timerQueue == null)
{
timerQueue = TimerThread.GetOrCreateQueue(SettingsSectionInternal.Section.DownloadTimeout);
}
timer = timerQueue.CreateTimer(timerCallback, request);
response = request.GetResponse();
// Check Last Modified.
DateTime lastModified = DateTime.MinValue;
HttpWebResponse httpResponse = response as HttpWebResponse;
if (httpResponse != null)
{
lastModified = httpResponse.LastModified;
}
else
{
FtpWebResponse ftpResponse = response as FtpWebResponse;
if (ftpResponse != null)
{
lastModified = ftpResponse.LastModified;
}
}
GlobalLog.Print("NetWebProxyFinder#" + ValidationHelper.HashString(this) + "::DownloadAndCompile() lastModified:" + lastModified.ToString() + " (script):" + (scriptInstance == null ? "(null)" : scriptInstance.LastModified.ToString()));
if (scriptInstance != null && lastModified != DateTime.MinValue && scriptInstance.LastModified == lastModified)
{
newScriptInstance = scriptInstance;
newState = AutoWebProxyState.Completed;
}
else
{
string scriptBody = null;
byte[] scriptBuffer = null;
using (Stream responseStream = response.GetResponseStream())
{
SingleItemRequestCache.ReadOnlyStream ros = responseStream as SingleItemRequestCache.ReadOnlyStream;
if (ros != null)
{
scriptBuffer = ros.Buffer;
}
if (scriptInstance != null && scriptBuffer != null && scriptBuffer == scriptInstance.Buffer)
{
scriptInstance.LastModified = lastModified;
newScriptInstance = scriptInstance;
newState = AutoWebProxyState.Completed;
GlobalLog.Print("NetWebProxyFinder#" + ValidationHelper.HashString(this) + "::DownloadAndCompile() Buffer matched - reusing Engine.");
}
else
{
using (StreamReader streamReader = new StreamReader(responseStream))
{
scriptBody = streamReader.ReadToEnd();
}
}
}
WebResponse tempResponse = response;
response = null;
tempResponse.Close();
timer.Cancel();
timer = null;
if (newState != AutoWebProxyState.Completed)
{
GlobalLog.Print("NetWebProxyFinder#" + ValidationHelper.HashString(this) + "::DownloadAndCompile() IsFromCache:" + tempResponse.IsFromCache.ToString() + " scriptInstance:" + ValidationHelper.HashString(scriptInstance));
if (scriptInstance != null && scriptBody == scriptInstance.ScriptBody)
{
GlobalLog.Print("NetWebProxyFinder#" + ValidationHelper.HashString(this) + "::DownloadAndCompile() Script matched - using existing Engine.");
scriptInstance.LastModified = lastModified;
if (scriptBuffer != null)
{
scriptInstance.Buffer = scriptBuffer;
}
newScriptInstance = scriptInstance;
newState = AutoWebProxyState.Completed;
}
else
{
GlobalLog.Print("NetWebProxyFinder#" + ValidationHelper.HashString(this) + "::DownloadAndCompile() Creating AutoWebProxyScriptWrapper.");
newScriptInstance = new AutoWebProxyScriptWrapper();
newScriptInstance.LastModified = lastModified;
if (newScriptInstance.Compile(location, scriptBody, scriptBuffer))
{
newState = AutoWebProxyState.Completed;
}
else
{
newState = AutoWebProxyState.CompilationFailure;
}
}
}
}
}
catch (Exception exception)
{
if (Logging.On)
{
Logging.PrintWarning(Logging.Web, SR.GetString(SR.net_log_proxy_script_download_compile_error, exception));
}
GlobalLog.Print("NetWebProxyFinder#" + ValidationHelper.HashString(this) + "::DownloadAndCompile() Download() threw:" + ValidationHelper.ToString(exception));
}
finally
{
if (timer != null)
{
timer.Cancel();
}
//
try
{
if (response != null)
{
response.Close();
}
}
finally
{
WebPermission.RevertAssert();
// The request is not needed anymore. Set it to null, so if Abort() gets called,
// after this point, it will result in a no-op.
request = null;
}
}
if ((newState == AutoWebProxyState.Completed) && (scriptInstance != newScriptInstance))
{
if (scriptInstance != null)
{
scriptInstance.Close();
}
scriptInstance = newScriptInstance;
}
GlobalLog.Print("NetWebProxyFinder#" + ValidationHelper.HashString(this) + "::DownloadAndCompile() retuning newState:" + ValidationHelper.ToString(newState));
return(newState);
}
private BaseWebProxyFinder.AutoWebProxyState DownloadAndCompile(Uri location)
{
BaseWebProxyFinder.AutoWebProxyState downloadFailure = BaseWebProxyFinder.AutoWebProxyState.DownloadFailure;
WebResponse response = null;
TimerThread.Timer timer = null;
AutoWebProxyScriptWrapper scriptInstance = null;
ExceptionHelper.WebPermissionUnrestricted.Assert();
try
{
lock (this.lockObject)
{
if (this.aborted)
{
throw new WebException(NetRes.GetWebStatusString("net_requestaborted", WebExceptionStatus.RequestCanceled), WebExceptionStatus.RequestCanceled);
}
this.request = WebRequest.Create(location);
}
this.request.Timeout = -1;
this.request.CachePolicy = new RequestCachePolicy(RequestCacheLevel.Default);
this.request.ConnectionGroupName = "__WebProxyScript";
if (this.request.CacheProtocol != null)
{
this.request.CacheProtocol = new RequestCacheProtocol(this.backupCache, this.request.CacheProtocol.Validator);
}
HttpWebRequest request = this.request as HttpWebRequest;
if (request != null)
{
request.Accept = "*/*";
request.UserAgent = base.GetType().FullName + "/" + Environment.Version;
request.KeepAlive = false;
request.Pipelined = false;
request.InternalConnectionGroup = true;
}
else
{
FtpWebRequest request2 = this.request as FtpWebRequest;
if (request2 != null)
{
request2.KeepAlive = false;
}
}
this.request.Proxy = null;
this.request.Credentials = base.Engine.Credentials;
if (timerQueue == null)
{
timerQueue = TimerThread.GetOrCreateQueue(SettingsSectionInternal.Section.DownloadTimeout);
}
timer = timerQueue.CreateTimer(timerCallback, this.request);
response = this.request.GetResponse();
DateTime minValue = DateTime.MinValue;
HttpWebResponse response2 = response as HttpWebResponse;
if (response2 != null)
{
minValue = response2.LastModified;
}
else
{
FtpWebResponse response3 = response as FtpWebResponse;
if (response3 != null)
{
minValue = response3.LastModified;
}
}
if (((this.scriptInstance != null) && (minValue != DateTime.MinValue)) && (this.scriptInstance.LastModified == minValue))
{
scriptInstance = this.scriptInstance;
downloadFailure = BaseWebProxyFinder.AutoWebProxyState.Completed;
}
else
{
string scriptBody = null;
byte[] buffer = null;
using (Stream stream = response.GetResponseStream())
{
SingleItemRequestCache.ReadOnlyStream stream2 = stream as SingleItemRequestCache.ReadOnlyStream;
if (stream2 != null)
{
buffer = stream2.Buffer;
}
if (((this.scriptInstance != null) && (buffer != null)) && (buffer == this.scriptInstance.Buffer))
{
this.scriptInstance.LastModified = minValue;
scriptInstance = this.scriptInstance;
downloadFailure = BaseWebProxyFinder.AutoWebProxyState.Completed;
}
else
{
using (StreamReader reader = new StreamReader(stream))
{
scriptBody = reader.ReadToEnd();
}
}
}
WebResponse response4 = response;
response = null;
response4.Close();
timer.Cancel();
timer = null;
if (downloadFailure != BaseWebProxyFinder.AutoWebProxyState.Completed)
{
if ((this.scriptInstance != null) && (scriptBody == this.scriptInstance.ScriptBody))
{
this.scriptInstance.LastModified = minValue;
if (buffer != null)
{
this.scriptInstance.Buffer = buffer;
}
scriptInstance = this.scriptInstance;
downloadFailure = BaseWebProxyFinder.AutoWebProxyState.Completed;
}
else
{
scriptInstance = new AutoWebProxyScriptWrapper {
LastModified = minValue
};
if (scriptInstance.Compile(location, scriptBody, buffer))
{
downloadFailure = BaseWebProxyFinder.AutoWebProxyState.Completed;
}
else
{
downloadFailure = BaseWebProxyFinder.AutoWebProxyState.CompilationFailure;
}
}
}
}
}
catch (Exception exception)
{
if (Logging.On)
{
Logging.PrintWarning(Logging.Web, SR.GetString("net_log_proxy_script_download_compile_error", new object[] { exception }));
}
}
finally
{
if (timer != null)
{
timer.Cancel();
}
try
{
if (response != null)
{
response.Close();
}
}
finally
{
CodeAccessPermission.RevertAssert();
this.request = null;
}
}
if ((downloadFailure == BaseWebProxyFinder.AutoWebProxyState.Completed) && (this.scriptInstance != scriptInstance))
{
if (this.scriptInstance != null)
{
this.scriptInstance.Close();
}
this.scriptInstance = scriptInstance;
}
return(downloadFailure);
}
