public override void Execute(ref string codes, string pageUrl, string pageUrlNoQuery, string pagePath, string rootUrl)
{
try
{
// 1- executing plugins
if (Plugins.IsPluginAvailable(PluginHosts.IPluginCSSProcessor))
{
Plugins.CallPluginMethod(PluginHosts.IPluginCSSProcessor,
PluginMethods.IPluginCSSProcessor.BeforeExecute,
this, (object)codes, pageUrl, pageUrlNoQuery, pagePath, rootUrl);
}
// ASProxy pages url formats generator
ASProxyPagesFormat pages = new ASProxyPagesFormat(_UserOptions.EncodeUrl);
// For @Import rule
CSSReplacer.ReplaceCSSClassStyleUrl(ref codes,
pageUrlNoQuery,
pages.PageAnyType,
pagePath,
rootUrl,
_UserOptions.EncodeUrl,
true);
// For backgrounds
CSSReplacer.ReplaceCSSClassStyleUrl(ref codes,
pageUrlNoQuery,
pages.PageAnyType,
pagePath,
rootUrl,
_UserOptions.EncodeUrl,
false);
// 2- executing plugins
if (Plugins.IsPluginAvailable(PluginHosts.IPluginCSSProcessor))
{
Plugins.CallPluginMethod(PluginHosts.IPluginCSSProcessor,
PluginMethods.IPluginCSSProcessor.AfterExecute,
this, (object)codes, pageUrl, pageUrlNoQuery, pagePath, rootUrl);
}
}
catch (Exception ex)
{
// error logs
if (Systems.LogSystem.ErrorLogEnabled)
{
Systems.LogSystem.LogError(ex, pageUrl);
}
LastStatus = LastStatus.ContinueWithError;
LastException = ex;
LastErrorMessage = "ASProxy has some errors!";
codes = "/* ASProxy has some errors! \n"
+ ex.Message + " */"
+ codes;
}
}
/// <summary>
/// Logs exception, request host, requested url and specified items
/// </summary>
public override void LogError(Exception ex, HttpRequest request, string message, string requestedUrl, params object[] optionalData)
{
if (ErrorLogEnabled == false)
{
return;
}
// executing plugins
if (_isPluginAvailable)
{
Plugins.CallPluginMethod(PluginHosts.IPluginLogSystem,
PluginMethods.IPluginLogSystem.BeforeLogError,
this, ex, request, message, requestedUrl, optionalData);
}
StringBuilder builder = new StringBuilder();
if (!string.IsNullOrEmpty(requestedUrl))
{
builder.AppendFormat(_strUrlFormat, requestedUrl);
}
if (request != null)
{
builder.AppendFormat(_strIPFormat, request.UserHostAddress);
builder.AppendFormat(_strASProxyRequestUrl, request.Url.PathAndQuery);
}
if (!string.IsNullOrEmpty(message))
{
builder.AppendFormat(_strMessage, message);
}
builder.AppendFormat(_strDateTimeFormat, DateTime.Now.ToString());
if (ex != null)
{
builder.AppendFormat(_strError, ex.ToString());
}
for (int i = 0; i < optionalData.Length; i++)
{
builder.AppendFormat(_strDataFormat, optionalData[i]);
}
string result = string.Format(_strEntityFormat, LogEntity.Error, builder.ToString());
try
{
SaveToErrorFile(result);
}
catch { }
}
/// <summary>
///
/// </summary>
public override void Initialize(HttpRequest httpRequest)
{
IntializeRequestInfo(httpRequest);
IntializeRequestInfoPostData(httpRequest);
// 0- executing plugins
if (_isPluginAvailable)
{
Plugins.CallPluginMethod(PluginHosts.IPluginEngine,
PluginMethods.IPluginEngine.AfterInitialize,
this);
}
}
/// <summary>
///
/// </summary>
public override void Initialize(string requestUrl)
{
RequestInfo.RequestUrl = requestUrl;
RequestInfo.RequestMethod = WebMethods.GET;
IntializeRequestInfoPostData(null);
// 0- executing plugins
if (_isPluginAvailable)
{
Plugins.CallPluginMethod(PluginHosts.IPluginEngine,
PluginMethods.IPluginEngine.AfterInitialize,
this);
}
}
public override NetworkCredential GetNetworkCertification(string url)
{
NetworkCredential result = GetNetworkCertification(GetCertification(url));
// 1- executing plugins
if (_isPluginAvailable)
{
Plugins.CallPluginMethod(PluginHosts.IPluginCredentialCache,
PluginMethods.IPluginCredentialCache.OnGetNetworkCertification,
this, url, result);
}
return(result);
}
/// <summary>
/// Logs http request, requested url and specified items
/// </summary>
public override void Log(LogEntity entity, HttpRequest request, string requestedUrl, params object[] optionalData)
{
if (ActivityLogEnabled == false)
{
return;
}
if (entity == LogEntity.ImageRequested && Configurations.LogSystem.ActivityLog_Images == false)
{
return;
}
// executing plugins
if (_isPluginAvailable)
{
Plugins.CallPluginMethod(PluginHosts.IPluginLogSystem,
PluginMethods.IPluginLogSystem.BeforeLog,
this, request, requestedUrl, optionalData);
}
StringBuilder builder = new StringBuilder();
builder.AppendFormat(_strUrlFormat, requestedUrl);
if (request != null)
{
builder.AppendFormat(_strIPFormat, request.UserHostAddress);
}
builder.AppendFormat(_strDateTimeFormat, DateTime.Now.ToString());
for (int i = 0; i < optionalData.Length; i++)
{
builder.AppendFormat(_strDataFormat, optionalData[i]);
}
string result = string.Format(_strEntityFormat, entity, builder.ToString());
try
{
SaveToActivityFile(result);
}
catch { }
}
public override void AddCertification(string url, string userName, string password)
{
HttpSessionState session = HttpContext.Current.Session;
if (session == null)
{
return;
}
string key = GetCertificatedKey(url);
CredentialDetails details = new CredentialDetails();
details.UserName = userName;
details.Password = password;
session[key] = details;
// 0- executing plugins
if (_isPluginAvailable)
{
Plugins.CallPluginMethod(PluginHosts.IPluginCredentialCache,
PluginMethods.IPluginCredentialCache.AfterAddCertification,
this, url, userName, password);
}
}
public override void Execute()
{
// fresh
_webResponse = null;
try
{
// Create a request instance
if (_webRequest == null)
{
_webRequest = WebRequest.Create(RequestInfo.RequestUrl);
}
// Initializa the instance
InitializeWebRequest(_webRequest);
// Post data
ApplyPostDataToRequest(_webRequest);
// Partial content data ranges
ApplyContentRanges(_webRequest);
// 0- executing plugins
if (_isPluginAvailable)
{
Plugins.CallPluginMethod(PluginHosts.IPluginWebData,
PluginMethods.IPluginWebData.BeforeExecuteGetResponse,
this, _webRequest);
}
try
{
// Get the response
_webResponse = _webRequest.GetResponse();
}
catch (WebException ex)
{
// ADDED Since V4.1:
// Captures unauthorized access errors.
// If the error isn't an unauthorized access error, then throw a relative exception.
WebResponse response = ex.Response;
if (response != null)
{
if (response is HttpWebResponse)
{
HttpWebResponse webRes = (HttpWebResponse)response;
if (webRes.StatusCode == HttpStatusCode.Unauthorized)
{
// Set unauthorized response data
FinalizeUnauthorizedWebResponse(webRes);
// response range
ReadResponseRangeInfo(webRes);
// Set status to normal
LastStatus = LastStatus.Normal;
// Do not continue the proccess
return;
}
}
else if (response is FtpWebResponse)
{
FtpWebResponse ftpRes = (FtpWebResponse)response;
if (ftpRes.StatusCode == FtpStatusCode.NotLoggedIn)
{
// Set unauthorized response data
FinalizeUnauthorizedWebResponse(ftpRes);
// response range
ReadResponseRangeInfo(ftpRes);
// Set status to normal
LastStatus = LastStatus.Normal;
// Do not continue the proccess
return;
}
}
}
// Nothing is captured, so throw the error
throw;
}
// 1- executing plugins
if (_isPluginAvailable)
{
Plugins.CallPluginMethod(PluginHosts.IPluginWebData,
PluginMethods.IPluginWebData.AfterExecuteGetResponse,
this, _webResponse);
}
// Check for response persmission set from "Administration UI"
ValidateResponse(_webResponse);
// Response is successfull, continue to get data
FinalizeWebResponse(_webResponse);
// response range
ReadResponseRangeInfo(_webResponse);
// 2- executing plugins
if (_isPluginAvailable)
{
Plugins.CallPluginMethod(PluginHosts.IPluginWebData,
PluginMethods.IPluginWebData.AfterExecuteFinalizeWebResponse,
this, _webResponse);
}
// Getting data
ResponseData = ReadResponseData(_webResponse);
// 3- executing plugins
if (_isPluginAvailable)
{
Plugins.CallPluginMethod(PluginHosts.IPluginWebData,
PluginMethods.IPluginWebData.AfterExecuteReadResponseData,
this);
}
}
catch (WebException ex)
{
// adds a special message for conenction failure
if (ex.Status == WebExceptionStatus.ConnectFailure)
{
// http status
if (ex.Response != null)
{
ApplyResponseHttpStatus(ex.Response);
}
else
{
ResponseInfo.HttpStatusDescription = ex.Message;
ResponseInfo.HttpStatusCode = (int)HttpStatusCode.NotFound;
}
ResponseInfo.ContentLength = -1;
LastStatus = LastStatus.Error;
LastException = ex;
// special message
LastErrorMessage = ex.Message +
"\n<br />" + "ASProxy is behind a firewall? If so, go through the proxy server or config ASProxy to pass it.";
return;
}
// ADDED 3.8.1::
// Try to recover the request state and display original error state
// Display original error page if requested.
if (!RequestInfo.PrrocessErrorPage)
{
throw;
}
// Continue to get data
FinalizeWebResponse(ex.Response);
// response range
ReadResponseRangeInfo(ex.Response);
// 2- executing plugins
if (_isPluginAvailable)
{
Plugins.CallPluginMethod(PluginHosts.IPluginWebData,
PluginMethods.IPluginWebData.AfterExecuteFinalizeWebResponse,
this, ex.Response);
}
// Getting data
ResponseData = ReadResponseData(_webResponse);
// 3- executing plugins
if (_isPluginAvailable)
{
Plugins.CallPluginMethod(PluginHosts.IPluginWebData,
PluginMethods.IPluginWebData.AfterExecuteReadResponseData,
this);
}
// The state is error page
LastStatus = LastStatus.ContinueWithError;
LastException = ex;
LastErrorMessage = ex.Message;
}
catch (Exception ex)
{
ResponseInfo.ContentLength = -1;
LastStatus = LastStatus.Error;
LastErrorMessage = ex.Message;
LastException = ex;
}
finally
{
// dispose only if data is ready
// not for streaming options
if (RequestInfo.BufferResponse)
{
if (_webResponse != null)
{
_webResponse.Close();
_webResponse = null;
}
}
}
}
public override void Execute(ref string codes,
string pageUrl,
string pageUrlNoQuery,
string pagePath,
string rootUrl)
{
try
{
// 1- executing plugins
if (Plugins.IsPluginAvailable(PluginHosts.IPluginJSProcessor))
{
Plugins.CallPluginMethod(PluginHosts.IPluginJSProcessor,
PluginMethods.IPluginJSProcessor.BeforeExecute,
this, (object)codes, pageUrl, pageUrlNoQuery, pagePath, rootUrl);
}
// BugFix: setting document.domain will cause error in javascript
// Also checking the value of document.domain may cause bad behaviours
// so both are going ot be disabled here
JSReplacer.ReplacePropertyUsages(ref codes,
"document.domain", Consts.ClientContent.JSEncoder_ASProxyLocationXDomain);
// New location should be encoded!
JSReplacer.AddEncoderMethodToPropertySet(ref codes,
new string[] { "location.href", "window.location",
"document.location", "top.location",
"self.location", "parent.location" },
Consts.ClientContent.JSEncoder_ASProxyEncoderMethodName);
// Cookie set
JSReplacer.AddEncoderMethodToPropertySet(ref codes,
"document.cookie",
Consts.ClientContent.JSEncoder_ASProxySetCookieMethodName);
// Cookie get, Since v5.0
JSReplacer.AddEncoderMethodToPropertyGet(ref codes,
"document.cookie",
Consts.ClientContent.JSEncoder_ASProxyGetCookieMethodName, true);
// Replaces these properties by __XUrl
// top.location , parent.location and self.location
JSReplacer.AddEncoderMethodToPropertyGet(ref codes,
new string[] { "top", "parent", "self" },
new string[] { "location" },
Consts.ClientContent.JSEncoder_ASProxyWindowLocOverrider,
false);
// document.URL is only getter and its string
JSReplacer.AddEncoderMethodToPropertyGet(ref codes,
new string[] { "document" },
new string[] { "URL" },
Consts.ClientContent.JSEncoder_ASProxyWindowLocHref,
false);
// fisrt test location with base objects
JSReplacer.AddEncoderMethodToPropertyGet(ref codes,
new string[] { "window", "document", "location" },
new string[] { "location" },
Consts.ClientContent.JSEncoder_ASProxyWindowLocOverrider,
false);
// then location attributes test
JSReplacer.AddEncoderMethodToPropertyGetFirstPart(ref codes,
new string[] { "location" },
new string[] { "href", "search", "hash", "host", "hostname", "pathname", "port", "protocol", "replace", "assign" },
Consts.ClientContent.JSEncoder_ASProxyWindowLocOverrider,
false);
JSReplacer.AddEncoderMethodToMethodFirstParameter(ref codes,
"location.replace",
Consts.ClientContent.JSEncoder_ASProxyEncoderMethodName);
// It is not common to use "open" method directly.
// So i ignore to handle it here
//JSReplacer.AddEncoderMethodToMethodFirstParameter(ref html, "open", Consts.JSEncoder_ASProxyEncoderMethodName);
// Don't proccess these
// The "open" method will proccess in JavaScript encoder in "asproxyencoder.js" file.
// Since v4.8
//JSReplacer.AddEncoderMethodToMethodFirstParameter(ref html, "window.open", Consts.JSEncoder_ASProxyEncoderMethodName);
//JSReplacer.AddEncoderMethodToMethodFirstParameter(ref html, "location.open", Consts.JSEncoder_ASProxyEncoderMethodName);
// 2- executing plugins
if (Plugins.IsPluginAvailable(PluginHosts.IPluginJSProcessor))
{
Plugins.CallPluginMethod(PluginHosts.IPluginJSProcessor,
PluginMethods.IPluginJSProcessor.AfterExecute,
this, (object)codes, pageUrl, pageUrlNoQuery, pagePath, rootUrl);
}
}
catch (Exception ex)
{
// error logs
if (Systems.LogSystem.ErrorLogEnabled)
{
Systems.LogSystem.LogError(ex, pageUrl);
}
LastStatus = LastStatus.ContinueWithError;
LastException = ex;
LastErrorMessage = "ASProxy has some errors!";
codes = "/* ASProxy has some errors! \n"
+ ex.Message + " */"
+ codes;
}
}
/// <summary>
/// Communicates with back-end and gets response information
/// </summary>
public override void ExecuteHandshake()
{
// Checks if handshake is alreadu done
// Hashshakhe can only run one time
if (_webData != null)
{
return;
}
// 1- executing the plugins
if (_isPluginAvailable)
{
Plugins.CallPluginMethod(PluginHosts.IPluginEngine,
PluginMethods.IPluginEngine.BeforeHandshake,
this, _webData);
}
// If this is an image request, we should provide orginal link as referer
if (RequestInfo.ContentTypeMime == MimeContentType.image_gif ||
RequestInfo.ContentTypeMime == MimeContentType.image_jpeg)
{
// We ignore what setting was. It should send referrer for images.
RequestInfo.RequestUrlAsReferrer = true;
}
do
{
// If this is auto recection request send request again to new location
if (_webData != null && _webData.ResponseInfo.AutoRedirect)
{
// Handles the redirect request
HandleResponseAutoRedirect();
// Exit the method
return;
}
else
{
// Generated user agent
// Since v5.1
string userAgent = Common.GenerateUserAgent(HttpContext.Current);
if (_webData != null)
{
_webData.Dispose();
}
// initializing new DataCore
_webData = (IWebData)Providers.GetProvider(ProviderType.IWebData);
_webData.RequestInfo.RequestUrl = RequestInfo.RequestUrl;
_webData.RequestInfo.UserAgent = userAgent;
}
// WebData request info
ApplyWebDataRequestInfo(_webData);
// Execute the request
_webData.Execute();
// If execution failed
if (_webData.LastStatus == LastStatus.Error)
{
LastStatus = LastStatus.Error;
LastErrorMessage = _webData.LastErrorMessage;
LastException = _webData.LastException;
return;
}
else if (_webData.LastStatus == LastStatus.ContinueWithError)
{
LastStatus = LastStatus.ContinueWithError;
LastErrorMessage = _webData.LastErrorMessage;
LastException = _webData.LastException;
}
// Read response info
FinilizeResponseInfo(_webData);
} while (_webData.ResponseInfo.AutoRedirect);
// 2- executing the plugins
if (_isPluginAvailable)
{
Plugins.CallPluginMethod(PluginHosts.IPluginEngine,
PluginMethods.IPluginEngine.AfterHandshake,
this, _webData);
}
}
/// <summary>
///
/// </summary>
public override void ExecuteToStream(Stream stream)
{
// handshake should be ran before and there should not be error
if (_webData == null || LastStatus == LastStatus.Error)
{
return;
}
// process type
DataTypeToProcess processType = DataTypeToProcess;
// gets mime type of content type
MimeContentType contentMimeType = _webData.ResponseInfo.ContentTypeMime;
// detecting processing method by response content type
if (processType == DataTypeToProcess.AutoDetect)
{
// gets its process type
processType = Common.MimeTypeToToProcessType(contentMimeType);
}
IDataProcessor dataProcessor = null;
switch (processType)
{
case DataTypeToProcess.AutoDetect:
break;
case DataTypeToProcess.Html:
dataProcessor = (IDataProcessor)Providers.GetProvider(ProviderType.IHtmlProcessor);
break;
case DataTypeToProcess.JavaScript:
dataProcessor = (IDataProcessor)Providers.GetProvider(ProviderType.IJSProcessor);
break;
case DataTypeToProcess.Css:
dataProcessor = (IDataProcessor)Providers.GetProvider(ProviderType.ICssProcessor);
break;
case DataTypeToProcess.AdobeFlash:
// still nothing
case DataTypeToProcess.None:
break;
default:
break;
}
if (dataProcessor != null)
{
// 3- executing the plugins
if (_isPluginAvailable)
{
Plugins.CallPluginMethod(PluginHosts.IPluginEngine,
PluginMethods.IPluginEngine.BeforeProcessor,
this, dataProcessor);
}
// Web data instance
dataProcessor.WebData = _webData;
// executes the process
string response = dataProcessor.Execute();
// If execution occurred
if (dataProcessor.LastStatus == LastStatus.Error)
{
LastStatus = LastStatus.Error;
LastErrorMessage = dataProcessor.LastErrorMessage;
LastException = dataProcessor.LastException;
return;
}
else if (dataProcessor.LastStatus == LastStatus.ContinueWithError)
{
LastStatus = LastStatus.ContinueWithError;
LastErrorMessage = dataProcessor.LastErrorMessage;
LastException = dataProcessor.LastException;
}
// processed content encoding
ResponseInfo.ContentEncoding = dataProcessor.ContentEncoding;
ResponseInfo.ContentLength = response.Length;
// Html specifies
if (processType == DataTypeToProcess.Html && dataProcessor is IHtmlProcessor)
{
IHtmlProcessor htmlProcessor = (IHtmlProcessor)dataProcessor;
ResponseInfo.HtmlPageTitle = htmlProcessor.PageTitle;
ResponseInfo.HtmlIsFrameSet = htmlProcessor.IsFrameSet;
ResponseInfo.ExtraCodesForPage = htmlProcessor.ExtraCodesForPage;
ResponseInfo.ExtraCodesForBody = htmlProcessor.ExtraCodesForBody;
ResponseInfo.HtmlDocType = htmlProcessor.DocType;
}
// 4- executing the plugins
if (_isPluginAvailable)
{
Plugins.CallPluginMethod(PluginHosts.IPluginEngine,
PluginMethods.IPluginEngine.AfterProcessor,
this);
}
// the processed content
byte[] streamBuff = ResponseInfo.ContentEncoding.GetBytes(response);
stream.Write(streamBuff, 0, streamBuff.Length);
}
else
{
// used to resolvent mime processing conflict
bool ContinueNonMime = true;
// if response is a image
if ((UserOptions.ImageCompressor) &&
(contentMimeType == MimeContentType.image_gif || contentMimeType == MimeContentType.image_jpeg))
{
using (MemoryStream imgMem = ImageCompressor.CompressImage(
_webData.ResponseData))
{
// check if compression is decreased size of data
if (imgMem.Length < _webData.ResponseData.Length)
{
ContinueNonMime = false;
// write the image to result
imgMem.WriteTo(stream);
}
else
{
// Oops! the original image is smaller
ContinueNonMime = true;
}
}
}
// can process other types?
if (ContinueNonMime)
{
if (processType == DataTypeToProcess.None &&
_webData.ResponseData is MemoryStream)
{
MemoryStream mem = (MemoryStream)_webData.ResponseData;
if (mem.Length > 0)
{
mem.WriteTo(stream);
}
}
else if (processType == DataTypeToProcess.None)
{
int readed = -1;
const int blockSize = 1024 * 5;
byte[] buffer = new byte[blockSize];
while ((int)(readed = _webData.ResponseData.Read(buffer, 0, blockSize)) > 0)
{
stream.Write(buffer, 0, readed);
}
}
else
{
Encoding contentEncoding;
// Reads response stream to a string
string response = StringStream.GetString(
_webData.ResponseData,
WebData.ResponseInfo.ContentType,
UserOptions.ForceEncoding,
false,
out contentEncoding);
ResponseInfo.ContentEncoding = contentEncoding;
ResponseInfo.ContentLength = response.Length;
byte[] streamBuff = ResponseInfo.ContentEncoding.GetBytes(response);
stream.Write(streamBuff, 0, streamBuff.Length);
}
}
}
}
/// <summary>
///
/// </summary>
public override string ExecuteToString()
{
// hanshake should be ran before and there should not be error
if (_webData == null || LastStatus == LastStatus.Error)
{
return(String.Empty);
}
// process type
DataTypeToProcess processType = DataTypeToProcess;
// gets mime type of content type
MimeContentType contentMimeType = _webData.ResponseInfo.ContentTypeMime;
// detecting processing method by response content type
if (processType == DataTypeToProcess.AutoDetect)
{
// gets its process type
processType = Common.MimeTypeToToProcessType(contentMimeType);
}
if (processType == DataTypeToProcess.Html && Systems.LogSystem.ActivityLogEnabled)
{
Systems.LogSystem.Log(LogEntity.UrlRequested, ResponseInfo.ResponseUrl);
}
IDataProcessor dataProcessor = null;
switch (processType)
{
case DataTypeToProcess.AutoDetect:
break;
case DataTypeToProcess.Html:
dataProcessor = (IDataProcessor)Providers.GetProvider(ProviderType.IHtmlProcessor);
break;
case DataTypeToProcess.JavaScript:
dataProcessor = (IDataProcessor)Providers.GetProvider(ProviderType.IJSProcessor);
break;
case DataTypeToProcess.Css:
dataProcessor = (IDataProcessor)Providers.GetProvider(ProviderType.ICssProcessor);
break;
case DataTypeToProcess.AdobeFlash:
// still nothing
default:
break;
}
if (dataProcessor != null)
{
// 3- executing the plugins
if (_isPluginAvailable)
{
Plugins.CallPluginMethod(PluginHosts.IPluginEngine,
PluginMethods.IPluginEngine.BeforeProcessor,
this, dataProcessor);
}
// Web data instance
dataProcessor.WebData = _webData;
// executes the process
string response = dataProcessor.Execute();
// If execution occurred
if (dataProcessor.LastStatus == LastStatus.Error)
{
LastStatus = LastStatus.Error;
LastErrorMessage = dataProcessor.LastErrorMessage;
LastException = dataProcessor.LastException;
return(response);
}
else if (dataProcessor.LastStatus == LastStatus.ContinueWithError)
{
LastStatus = LastStatus.ContinueWithError;
LastErrorMessage = dataProcessor.LastErrorMessage;
LastException = dataProcessor.LastException;
}
// processed content encoding
ResponseInfo.ContentEncoding = dataProcessor.ContentEncoding;
ResponseInfo.ContentLength = response.Length;
// Html specifies
if (processType == DataTypeToProcess.Html && dataProcessor is IHtmlProcessor)
{
IHtmlProcessor htmlProcessor = (IHtmlProcessor)dataProcessor;
ResponseInfo.HtmlPageTitle = htmlProcessor.PageTitle;
ResponseInfo.HtmlIsFrameSet = htmlProcessor.IsFrameSet;
ResponseInfo.ExtraCodesForPage = htmlProcessor.ExtraCodesForPage;
ResponseInfo.ExtraCodesForBody = htmlProcessor.ExtraCodesForBody;
ResponseInfo.HtmlDocType = htmlProcessor.DocType;
}
// 4- executing the plugins
if (_isPluginAvailable)
{
Plugins.CallPluginMethod(PluginHosts.IPluginEngine,
PluginMethods.IPluginEngine.AfterProcessor,
this);
}
// the processed content
return(response);
}
else
{
Encoding contentEncoding;
// Reads response stream to a string
string response = StringStream.GetString(
_webData.ResponseData,
WebData.ResponseInfo.ContentType,
UserOptions.ForceEncoding,
false,
out contentEncoding);
ResponseInfo.ContentEncoding = contentEncoding;
ResponseInfo.ContentLength = response.Length;
return(response);
}
}
/// <summary>
/// Processes the html codes
/// </summary>
/// <param name="codes">Html codes</param>
/// <param name="pageUrl">Page url. E.G. http://Site.com/users/profile.aspx?uid=90</param>
/// <param name="rootUrl">Root path. E.G. http://Site.com/</param>
public override void Execute(ref string codes, string pageUrl, string pageUrlNoQuery, string pagePath, string rootUrl)
{
try
{
// 1- executing plugins
if (Plugins.IsPluginAvailable(PluginHosts.IPluginHtmlProcessor))
{
Plugins.CallPluginMethod(PluginHosts.IPluginHtmlProcessor,
PluginMethods.IPluginHtmlProcessor.BeforeExecute,
this, (object)codes, pageUrl, pageUrlNoQuery, pagePath, rootUrl);
}
// ASProxy pages url formats generator
ASProxyPagesFormat pages = new ASProxyPagesFormat(_UserOptions.EncodeUrl);
// Original urls addistional codes option
bool orginalUrlRequired = false;
// Renames ASPDotNET standard ViewState name to a temporary name
// This name will reset to default when the page posted back
HtmlReplacer.ReplaceAspDotNETViewState(ref codes);
// If remove scripts chosen, remove all the scripts.
if (_UserOptions.RemoveScripts)
{
HtmlReplacer.RemoveScripts(ref codes);
}
// If remove embeded objects is requested
if (_UserOptions.RemoveObjects)
{
// Removing <object> tag
HtmlParser.RemoveTagContent(ref codes, "object", true);
// Removing <embed> tag
HtmlParser.RemoveTagContent(ref codes, "embed", true);
}
// Applying the BASE tag to the URLs.
string baseHref;
if (HtmlReplacer.ReplaceBaseSources(ref codes, true, out baseHref))
{
// changing page base path to specified Base in the document
pagePath = UrlProvider.AddSlashToEnd(baseHref);
// BUGFIX v4.6.1:: site root url should change also
rootUrl = UrlProvider.GetRootPath(rootUrl);
}
// processing style sheet links
if (_UserOptions.Images)
{
HtmlReplacer.ReplaceCssLinks(ref codes,
pageUrlNoQuery,
pages.PageAnyType,
pagePath,
rootUrl,
_UserOptions.EncodeUrl);
// TODO: CSSReplacer
// This function replaces "Import" rule and background images!
// So, this breaches to background option role. Since v4.0
CSSReplacer.ReplaceStyleTagStyleUrl(ref codes,
pageUrlNoQuery,
pages.PageAnyType,
pages.PageAnyType,
pagePath,
rootUrl,
_UserOptions.EncodeUrl);
}
// It seems with javascript encoding these methods are useless!!
// The javascript may be disabled in browser so we have to this anyway
if (_UserOptions.Links)
{
string extraAttib = "";
// Add displaying orginal url address code
if (_UserOptions.OrginalUrl)
{
orginalUrlRequired = true;
extraAttib = Resources.STR_OrginalUrl_TagAttributeFormat;
}
// Add an attribute to determine that this tag already encoded and javascript encoder shouldn't encode it again.
extraAttib += Consts.ClientContent.attrAlreadyEncodedAttributeWithValue;
HtmlReplacer.ReplaceAnchors(ref codes,
pageUrlNoQuery,
pages.PageDefault,
pagePath,
rootUrl,
_UserOptions.EncodeUrl,
extraAttib);
HtmlReplacer.ReplaceHttpRefresh(ref codes,
pageUrlNoQuery,
pages.PageDefault,
pagePath,
rootUrl,
_UserOptions.EncodeUrl);
}
else
{
string extraAttib;
// Add an attribute to determine that this tag already encoded and javascript encoder shouldn't encode it again.
extraAttib = Consts.ClientContent.attrAlreadyEncodedAttributeWithValue;
HtmlReplacer.ReplaceAnchors(ref codes,
pageUrlNoQuery,
"{0}",
pagePath,
rootUrl,
false,
extraAttib);
HtmlReplacer.ReplaceHttpRefresh(ref codes,
pageUrlNoQuery,
"{0}",
pagePath,
rootUrl,
_UserOptions.EncodeUrl);
}
if (_UserOptions.Frames)
{
string extraAttrib = Resources.STR_IFrame_ExtraAttribute;
// Encode <iframe> tags
HtmlReplacer.ReplaceIFrames(ref codes,
pageUrlNoQuery,
pages.PageHtml,
pagePath,
rootUrl,
_UserOptions.EncodeUrl,
extraAttrib);
// Encode <framset> tags
HtmlReplacer.ReplaceFrameSets(ref codes,
pageUrlNoQuery,
pages.PageHtml,
pagePath,
rootUrl,
_UserOptions.EncodeUrl);
}
// Encode <img> tags
if (_UserOptions.Images)
{
string extraAttrib = "";
// Add code to display orginal url address
if (_UserOptions.OrginalUrl)
{
orginalUrlRequired = true;
extraAttrib = Resources.STR_OrginalUrl_TagAttributeFormat;
}
// Add an attribute to determine that this tag already encoded and javascript encoder shouldn't encode it again.
extraAttrib += Consts.ClientContent.attrAlreadyEncodedAttributeWithValue;
HtmlReplacer.ReplaceImages(ref codes,
pageUrlNoQuery,
pages.PageAnyType,
pagePath,
rootUrl,
_UserOptions.EncodeUrl,
extraAttrib);
// Encode background image of <body> , <table> and <td> tags
HtmlReplacer.ReplaceBackgrounds(ref codes,
pageUrlNoQuery,
pages.PageAnyType,
pagePath,
rootUrl,
_UserOptions.EncodeUrl);
}
else
{
string extraAttrib;
// Add an attribute to determine that this tag already encoded and javascript encoder shouldn't encode it again.
extraAttrib = Consts.ClientContent.attrAlreadyEncodedAttributeWithValue;
HtmlReplacer.ReplaceImages(ref codes,
pageUrlNoQuery,
"{0}",
pagePath,
rootUrl,
false,
extraAttrib);
}
// Encodes script tags if RemoveScripts option is disabled
if (_UserOptions.RemoveScripts == false)
{
HtmlReplacer.ReplaceScripts(ref codes,
pageUrlNoQuery,
pages.PageAnyType,
pagePath,
rootUrl,
_UserOptions.EncodeUrl);
// TODO: JSReplacer
JSReplacer.ReplaceScriptTagCodes(ref codes);
// V5.2: Replaces tags events using RegEx
HtmlReplacer.ReplaceTagsEvents(ref codes,
pageUrlNoQuery,
pages.PageAnyType,
pagePath,
pageUrl,
rootUrl,
_UserOptions.EncodeUrl);
}
// Encode <embed> tags
HtmlReplacer.ReplaceEmbeds(ref codes,
pageUrlNoQuery,
pages.PageAnyType,
pagePath,
rootUrl,
_UserOptions.EncodeUrl);
// Encode <form> tags
if (_UserOptions.SubmitForms)
{
string extraAttrib;
// Add an attribute to determine that this tag already encoded and javascript encoder shouldn't encode it again.
extraAttrib =
Consts.ClientContent.attrAlreadyEncodedAttributeWithValue
+ Resources.STR_SubmitForms_ExtraAttribute;
HtmlReplacer.ReplaceFormsSources(ref codes,
pageUrlNoQuery,
pages.PageDefault,
pagePath,
rootUrl,
_UserOptions.EncodeUrl,
_UserOptions.SubmitForms,
extraAttrib);
}
else
{
string extraAttib;
// Add an attribute to determine that this tag already encoded and javascript encoder shouldn't encode it again.
extraAttib =
Consts.ClientContent.attrAlreadyEncodedAttributeWithValue
+ Resources.STR_SubmitForms_ExtraAttribute;
HtmlReplacer.ReplaceFormsSources(ref codes,
pageUrlNoQuery,
"{0}",
pagePath,
pagePath,
false,
_UserOptions.SubmitForms,
extraAttib);
}
// Add dynamic encoding javascript codes
string jsEncoderCodes = GenerateJsEncoderCodes(pageUrl,
pageUrlNoQuery,
pagePath,
rootUrl);
// Add jsEncoder codes to page
ExtraCodesForPage = jsEncoderCodes + ExtraCodesForPage;
// OrginalUrl additional injection html codes
if (orginalUrlRequired)
{
// TODO: Check necessary
ExtraCodesForPage = Resources.STR_OrginalUrl_FloatBar + ExtraCodesForPage;
// Inject to html, right after the body element
ExtraCodesForBody = Resources.STR_OrginalUrl_Functions + ExtraCodesForBody;
}
// 2- executing plugins
if (Plugins.IsPluginAvailable(PluginHosts.IPluginHtmlProcessor))
{
Plugins.CallPluginMethod(PluginHosts.IPluginHtmlProcessor,
PluginMethods.IPluginHtmlProcessor.AfterExecute,
this, (object)codes, pageUrl, pageUrlNoQuery, pagePath, rootUrl);
}
}
catch (Exception ex)
{
// error logs
if (Systems.LogSystem.ErrorLogEnabled)
{
Systems.LogSystem.LogError(ex, pageUrl);
}
codes = "<center><b>ASProxy has some errors! The delivered content may not work properly.</b></center>" + ex.Message + "<br />"
+ codes;
}
}
/// <summary>
/// Validates the request context for UAC
/// </summary>
public override bool ValidateContext(HttpContext context)
{
// executing plugins
if (_isPluginAvailable)
{
Plugins.CallPluginMethod(PluginHosts.IPluginUAC,
PluginMethods.IPluginUAC.ValidateContext,
this, context);
}
if (!Configurations.UserAccessControl.Enabled)
{
return(true);
}
// user ip
string userIP = context.Request.UserHostAddress;
if (Configurations.UserAccessControl.AllowedList != null ||
Configurations.UserAccessControl.AllowedRange != null)
{
// Search in single ip addresses
if (Configurations.UserAccessControl.AllowedList != null)
{
// Is the IP allowed?
if (Configurations.UserAccessControl.AllowedList.Contains(userIP))
{
return(true);
}
}
if (Configurations.UserAccessControl.AllowedRange != null)
{
foreach (Configurations.UserAccessControlConfig.IPRange range in Configurations.UserAccessControl.AllowedRange)
{
// Is between the range?
if (CompareIPs.IsGreaterOrEqual(userIP, range.Low) && CompareIPs.IsLessOrEqual(userIP, range.High))
{
return(true);
}
}
}
// No match found, end app anyway!
EndApplication(context);
return(false);
}
// Search in single blocked ip addresses
if (Configurations.UserAccessControl.BlockedList != null)
{
// Is the IP blocked?
if (Configurations.UserAccessControl.BlockedList.Contains(userIP))
{
EndApplication(context);
return(false);
}
}
if (Configurations.UserAccessControl.BlockedRange != null)
{
foreach (Configurations.UserAccessControlConfig.IPRange range in Configurations.UserAccessControl.BlockedRange)
{
// Is between the range?
if (CompareIPs.IsGreaterOrEqual(userIP, range.Low) && CompareIPs.IsLessOrEqual(userIP, range.High))
{
EndApplication(context);
return(false);
}
}
}
return(true);
}