public void FetchWsdlResponse(OracleInterface ora) { _headers.Clear(); _headers.Add(new NameValuePair("Content-Type", "text/xml; charset=utf-8;")); _headers.Add(new NameValuePair("Content-Length", ora.WsdlBody().Length.ToString())); _responseBody.Append(ora.WsdlBody()); }
public void FetchSoapResponse(OracleInterface ora) { _headers.Clear(); _headers.Add(new NameValuePair("Content-Type", "application/soap+xml; charset=utf-8;")); _headers.Add(new NameValuePair("Content-Length", ora.SoapBody().Length.ToString())); _responseBody.Append(ora.SoapBody()); }
public void FetchXdbResponse(OracleInterface ora) { ContentType = ora.XdbContentType; //ContentType = "application/octet-stream"; if (ContentType.StartsWith("text")) // || contentType.StartsWith("text/html") || contentType.StartsWith("text/xml") { _responseBody.Append(ora.GetXdbResourceText()); } else { FileData = ora.GetXdbResourceFile(); IsDownload = true; } }
/// <summary> /// The main routine that handles each request, calls the database, and outputs the response from the OWA toolkit back to the client through IIS. /// </summary> /// <param name="o"></param> /// <param name="a"></param> private void HandleRequest(object o, EventArgs a) { // grab the request context from ASP.NET HttpApplication app = (HttpApplication)o; HttpContext ctx = (HttpContext)app.Context; if (DadConfiguration.HideServerBanner) { // http://blogs.technet.com/b/stefan_gossner/archive/2008/03/12/iis-7-how-to-send-a-custom-server-http-header.aspx try { app.Response.Headers.Remove("Server"); app.Response.Headers.Remove("X-AspNet-Version"); app.Response.Headers.Remove("X-Powered-By"); } catch (PlatformNotSupportedException e) { logger.Warn("Attempted to hide server banners (HideServerBanner = True), but failed with error: " + e.Message); } } // check if gateway should be bypassed (return normal execution to IIS) if (DadConfiguration.ServeStaticContent) { string physicalPath = app.Request.PhysicalPath; if (File.Exists(physicalPath)) { logger.Debug("Requested file " + physicalPath + " exists on disk. Gateway will not handle this request."); return; } else { logger.Debug("Requested file " + physicalPath + " was NOT found on disk, continuing with normal gateway request."); } } // parse the request (URL); we are expecting calls in a format similar to the following: // http://servername/PLSQLGatewayModule/dadname/[schema.][package.]procedure?parameter1=xxx¶meter2=yyy string serverName = app.Request.ServerVariables["HTTP_HOST"]; string requestContentType = app.Request.ContentType; string requestBody = ""; string requestPath = app.Request.FilePath.Substring(1); string soapAction = app.Request.Headers["SOAPAction"]; if (requestContentType.ToLower() != "application/x-www-form-urlencoded") { requestBody = new StreamReader(app.Request.InputStream, System.Text.Encoding.Default).ReadToEnd(); requestBody = HttpUtility.UrlDecode(requestBody); } GatewayRequest gReq = new GatewayRequest(serverName, app.Request.HttpMethod, app.Request.FilePath, app.Request.RawUrl, soapAction); if (!gReq.DadSpecifiedInRequest) { if (DadConfiguration.DefaultDadEnabled) { string defaultURL = "/" + gReq.ModuleName + "/" + gReq.DadName + "/" + gReq.ProcName; logger.Debug("DAD not specified in URL, or specified DAD not defined in configuration file. Redirecting to default DAD and default procedure: " + defaultURL); ctx.Response.Redirect(defaultURL); //ctx.Response.StatusCode = 302; // moved temporarily app.CompleteRequest(); return; } else { logger.Warn("DAD not specified in request, or DAD not defined in configuration file, and default DAD disabled. Request terminated with 404."); throw new HttpException(404, "Not Found"); } } if (gReq.ValidRequest) { // the requested procedure name is valid // now process querystring and form variables, set up the OWA packages with the CGI environment information, // and check if there are files to be uploaded if (gReq.IsWsdlRequest) { logger.Debug("Request is for WSDL document"); } else if (gReq.IsSoapRequest) { logger.Debug("Invocation protocol is SOAP"); gReq.AddRequestParametersForSOAP(gReq.ProcName, requestBody); } else { gReq.AddRequestParameters(app.Request.QueryString, app.Request.Form, app.Request.Files, requestBody); } gReq.AddCGIEnvironment(ctx.Request.ServerVariables); OracleParameterCache opc = new OracleParameterCache(ctx); // connect to the database OracleInterface ora = new OracleInterface(gReq, opc); if (ora.Connected()) { ora.SetupOwaCGI(gReq.CGIParameters, ctx.Request.UserHostName, ctx.Request.UserHostAddress, gReq.BasicAuthUsername, gReq.BasicAuthPassword); if (ctx.Request.Files.Count > 0) { bool uploadSuccess = ora.UploadFiles(gReq.UploadedFiles); } } bool success = false; // the GatewayResponse object will hold the result of the database call (headers, cookies, status codes, response body, etc.) GatewayResponse gResp = new GatewayResponse(); if (!ora.Connected()) { logger.Debug("Failed to connect to database, skipping procedure execution."); success = false; } else if (gReq.IsSoapRequest) { if (gReq.IsWsdlRequest) { success = ora.GenerateWsdl(gReq.ServerName, gReq.ModuleName, gReq.DadName, gReq.ProcName); } else { success = ora.ExecuteMainProc(gReq.OwaProc, gReq.RequestParameters, false, gReq.ProcName); if (success) { ora.GenerateSoapResponse(gReq.ProcName); } else { int errorCode = ora.GetLastErrorCode(); string errorText = ora.GetLastErrorText(); logger.Debug("SOAP request failed with error code " + errorCode + ", generating SOAP Fault response."); ora.GenerateSoapFault(errorCode, errorText); } } } else if (gReq.IsFlexibleParams) { logger.Debug("Using flexible parameter mode (converting parameters to name/value arrays)"); success = ora.ExecuteMainProc(gReq.OwaProc, gReq.GetFlexibleParams(), false, gReq.ProcName); } else if (gReq.IsPathAlias) { logger.Debug("Forwarding request to PathAliasProcedure"); success = ora.ExecuteMainProc(gReq.OwaProc, gReq.GetPathAliasParams(), false, gReq.ProcName); } else if (gReq.IsXdbAlias) { logger.Debug("Forwarding request to XDB Repository"); success = ora.GetXdbResource(gReq.XdbAliasValue); } else if (gReq.IsDocumentPath) { logger.Debug("Forwarding request to DocumentProcedure"); success = ora.ExecuteMainProc(gReq.OwaProc, new List <NameValuePair>(), false, gReq.ProcName); } else { success = ora.ExecuteMainProc(gReq.OwaProc, gReq.RequestParameters, false, gReq.ProcName); if (!success && ora.GetLastErrorText().IndexOf("PLS-00306:") > -1) { logger.Error("Call failed: " + ora.GetLastErrorText()); logger.Debug("Wrong number or types of arguments in call. Will retry call after looking up parameter metadata in data dictionary."); success = ora.ExecuteMainProc(gReq.OwaProc, gReq.RequestParameters, true, gReq.ProcName); } else if (!success && ora.GetLastErrorText().IndexOf("ORA-01460:") > -1) { logger.Error("Call failed: " + ora.GetLastErrorText()); logger.Debug("Unimplemented or unreasonable conversion requested. Will retry call after looking up parameter metadata in data dictionary."); success = ora.ExecuteMainProc(gReq.OwaProc, gReq.RequestParameters, true, gReq.ProcName); } else if (!success && ora.GetLastErrorText().IndexOf("ORA-00201:") > -1) { logger.Error("Call failed: " + ora.GetLastErrorText()); logger.Debug("Identifier must be declared. Will retry call after looking up parameter metadata in data dictionary."); success = ora.ExecuteMainProc(gReq.OwaProc, gReq.RequestParameters, true, gReq.ProcName); } } if (success) { logger.Info("Gateway procedure executed successfully."); ora.DoCommit(); if (gReq.IsWsdlRequest) { logger.Info("Responding with WSDL document"); gResp.FetchWsdlResponse(ora); } else if (gReq.IsSoapRequest) { logger.Info("Responding with SOAP response"); gResp.FetchSoapResponse(ora); } else if (gReq.IsXdbAlias) { logger.Info("Responding with XDB Resource"); gResp.FetchXdbResponse(ora); } else { // fetch the response buffers from OWA logger.Debug("Fetch buffer size = " + gReq.DadConfig.FetchBufferSize); gResp.FetchOwaResponse(ora); } ora.CloseConnection(); // process response ProcessResponse(gReq, gResp, ctx, app); } else { logger.Error("Call failed: " + ora.GetLastErrorText()); ora.DoRollback(); if (gReq.IsSoapRequest) { logger.Debug("SOAP request failed, returning SOAP fault as part of normal response."); gResp.FetchSoapResponse(ora); ProcessResponse(gReq, gResp, ctx, app); } else if (gReq.DadConfig.ErrorStyle == "DebugStyle") { logger.Error("Request failed, showing debug error page"); ctx.Response.Write(GatewayError.GetErrorDebugPage(gReq, ora.GetLastErrorText())); } else { logger.Error("Request failed, user gets status code 404"); throw new HttpException(404, "Not Found"); //ctx.Response.Clear(); //ctx.Response.StatusCode = 404; } // TODO: does this get called if HttpException is thrown above... don't think so! ora.CloseConnection(); } } else { logger.Warn("Request (" + requestPath + ") not valid, returning 404..."); if (gReq.DadConfig.ErrorStyle == "DebugStyle") { ctx.Response.Write(GatewayError.GetInvalidRequestDebugPage(requestPath, gReq.DadConfig)); } else { throw new HttpException(404, "Not Found"); //ctx.Response.Clear(); //ctx.Response.StatusCode = 404; } } app.CompleteRequest(); logger.Info("Request completed."); }
public void FetchOwaResponse(OracleInterface ora) { int pageFragmentCount = 0; while (ora.MoreToFetch()) { pageFragmentCount = pageFragmentCount + 1; if (pageFragmentCount == 1) { string firstFragment = ora.GetOwaPageFragment(); ParseResponseHeaders(firstFragment); // check if we are downloading a file, if so ignore any OWA/HTP generated output (except the headers) //IsDownload = ora.IsDownload(); IsDownload = ora.IsDownload; if (IsDownload) { // get the file info string downloadInfo = ora.GetDownloadInfo(); if (downloadInfo.Equals("B") || downloadInfo.Equals("F")) { // get the file FileData = ora.GetDownloadFile(downloadInfo); } else { // decode the file info (filename, last_updated, mime_type, content_type, dad_charset, doc_size) if (downloadInfo.StartsWith("12XNOT_MODIFIED")) { StatusCode = 302; //StatusDescription = "Not Modified"; } else { int fileNameStartPos = downloadInfo.IndexOf("X") + 1; int fileNameLength = int.Parse(downloadInfo.Substring(0, fileNameStartPos - 1)); string fileName = downloadInfo.Substring(fileNameStartPos, fileNameLength); string leftToParse = downloadInfo.Substring(fileNameStartPos + fileNameLength + 1); int lastModifiedStartPos = leftToParse.IndexOf("X") + 1; int lastModifiedLength = int.Parse(leftToParse.Substring(0, lastModifiedStartPos - 1)); string lastModified = leftToParse.Substring(lastModifiedStartPos, lastModifiedLength); leftToParse = leftToParse.Substring(lastModifiedStartPos + lastModifiedLength + 1); int contentTypeStartPos = leftToParse.IndexOf("X") + 1; int contentTypeLength = int.Parse(leftToParse.Substring(0, contentTypeStartPos - 1)); string contentType = leftToParse.Substring(contentTypeStartPos, contentTypeLength); leftToParse = leftToParse.Substring(contentTypeStartPos + contentTypeLength + 1); // skip other encoded fields, chop off last X, content-length is last leftToParse = leftToParse.Substring(0, leftToParse.Length - 1); int contentLengthStartPos = leftToParse.LastIndexOf("X"); int contentLength = int.Parse(leftToParse.Substring(contentLengthStartPos + 1)); FileData = ora.GetDownloadFileFromDocTable(fileName); ContentType = contentType; ContentLength = contentLength; _headers.Add(new NameValuePair("Last-Modified", lastModified)); } } break; // exit loop since we do not need to fetch more from the HTP buffer } } else { // second or later fragment, just get the text _responseBody.Append(ora.GetOwaPageFragment()); } } }