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• How do you protect against specific CSRF attack

  - by Saif Bechan

  I am going trough the OWASP Top 10 list of 2007 and 2010. I stumbled upon Cross Site Request Forgery (CSRF) this is often called session riding as you let the user usee his session to fulfill your wishes. Now a solution to this is adding a token to every url and this token is checked for every link. For example to vote on product x the url would be: 'http://mysite.com?token=HVBKJNKL' This looks like a solid solution to because a hacker can not guess the token. But I was thinking of the following scenario(I do not know if it is possible): You create a website with an hidden iFrame or div. After that you can load my website in it either using just the normal iFrame or ajax. When you have my website loaded hidden inside your website, and the user has a stored session, the following can be done. You can retrieve the token from the URLS, and still do all the actions needed. Is it possible to do something like this. Or is it not possible to do this cross domain.

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• I have made an installer for MyProgram but the uninstall shortcut that it creates leaves behind empt

  - by Coder7862396

  I have created an installer for MyProgram using the Visual Studio Installer (Visual Studio Setup Project). It is called "MyProgram Setup.msi". It installs the program fine and if it is uninstalled using the Add/Remove Programs control panel then everything gets removed as it should. The problem is that I want to add a shortcut to the "User's Programs Menu" under the program shortcut called "Uninstall MyProgram". I have tried doing this in 3 different ways and in all 3 ways if MyProgram is uninstalled using that shortcut, the uninstall will leave behind 2 empty folders ("...Program Files\MyCompany\" and "...Program Files\MyCompany\MyProgram\"). Here are the 3 ways that I have tried to make an uninstaller shortcut: 1) A shortcut to a batch or script file Uninstall MyProgram.bat: @ECHO OFF msiexec /uninstall {MyGUID} Uninstall MyProgram.vbs: Dim objShell Set objShell = WScript.CreateObject("WScript.Shell") objShell.Run("START /B msiexec /uninstall {MyGUID}") Set objShell = Nothing 2) Editing the MSI file using Orca.exe I found out how to do this using this guide: http://www.codeproject.com/KB/install/MSIShortcuts.aspx I added the Shortcut Entry to the Shortcut table. Uninstalling worked but it still left behind the 2 empty folders when using this shortcut. 3) From code within MyProgram.exe I modified MyProgram.exe to take a "/uninstall" command line parameter to run "msiexec.exe /uninstall {MyGUID}" and exit itself. Similar to this solution: http://www.codeproject.com/KB/install/DeployUninstall.aspx None of these attempts created a shortcut which can uninstall the program as well as the program's base folders. I don't want to switch to some other installer product such as Inno Setup, NSIS, or WiX.

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• using dojox grid in xpages

  - by Tarun

  how to use dojox datagrid in xpages? If anyone have code snippet please send it to me at [email protected] I am trying with the following code but getting nothing at the output: <xp:this.resources> <xp:dojoModule name="dojox.grid.DataGrid"></xp:dojoModule> <xp:dojoModule name="dojox.grid"></xp:dojoModule> </xp:this.resources> <xp:panel > <xp:scriptBlock id="scriptBlock1"> <xp:this.value><![CDATA[makeGrid = function(){ dojo.require("dijit.form.Button"); dojo.require("dojox.grid.DataGrid"); var subrow1 = [{name: "Product Title"}, {name: "Price"}, {name: "Type"}]; var view = {rows: [ subrow1 ]}; var structure = [ view ]; var data = [ ["Baseball gloves", 12.34, "Sports"], ["Tennis ball", 5.99, "Sports"], ["T-shirt", 12.45, "Clothing"], ["Hat", 12.45, "Clothing"] ]; var productModel = new dojox.grid.data.Table(null, data); productModel.render(); }; XSP.addBeforeLoad(makeGrid);]] <div dojoType="dojox.Grid" autoWidth="true" model="productModel" structure="structure" </xp:panel> Please help !!

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• "Best" language /architecture for browser-based app with ODBC and sockets? (subjective)

  - by mawg

  Sorry to ask a subjective question, but I would welcome some advice. I am an experienced programmer of embedded s/w, but haven't done much network programming, although I have done a fair bit of hobbyist PHP. Anyway, I have to develop what is probably a fairly general type of app, as shown in this crude diagram --------------------------------------------------------------------------------- | Browser / user interface Takes input from user form and writes data to d/b. | | Also gets data and updates browser contents when when d/b contents are changed | | because of info received over TCP/IP. | |________________________________________________________________________________| | ODBC | |_______________________________________________________________________________| | database | |_______________________________________________________________________________| | ODBC | |_______________________________________________________________________________| | Socket (TCP/IP) | | Send data out when d/b is updated from browser. | | Also, update d/b when data are received over TCP/IP. | |_______________________________________________________________________________| As I say, I imagine this to be a fairly typical architecture? Am I right? Then client is insisting on MSIE - unless I can show compelling technical reasons for FireFox or other then it will have to be MSIE (are there any compelling technical reasons?). So, with MIE (almost) a given, I had though to use PHP, since I know it, but the client seems awfully keen on Java (which ought to be OK since I am conversant with C++) it woudl seem to make sense to use the same language for the "upper" interface between the web pages (which that app generates) and the d/b, and for the "lower" interface between the d/b and the socket. (a single language means a single set of tools since text approach, etc) So, the (probably highly subjective) question is "which language shoudl I choose". As I say, the client is keen on Java. Any compelling reason why not? Is it generally a good choice for the sort of thing described here? Any other hints & tips gratefully appreciated (and up-voted): URLs, books, tool chain suggestions, etc, etc

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• XMPP and Android interaction

  - by Ameya Phadke

  I am currently finding about how to build a XMPP client application on android 2.0.I came across this link which somewhat talks about the same problem.I am a newbie to android dev and thus found the solution given there to be difficult to digest. The system currently has Active MQ as a JMS provider.My job is to fed the messages coming from JMS to the XMPP server and then develope XMPP client on android 2.0 which will listen and show notification to the events pushed by the server. I have following concerns(which might sound foolish) 1.How do I push the events from JMS to the XMPP server which will in turn push them on android? 2.Which XMPP server implementation I should use?I have 3 options * Openfire: Very mature (was a commercial product), but sounds like it's heavyweight, written in Java * Prosody: Lightweight and easy to use, written in Lua. Doesn't have PubSub module yet * Tigase: Also lightweight, written in Java, supports PubSub How do I test and setup these servers.Do I need PubSub funcationality for my app? 3.For XMPP client I came across Smack API given here which is updated like 2 years back.Can anyone please tell me how do I make use of it for Android 2.0.If possible can anyone please mail me latest working Smack jar files. Thanks, Ameya

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• Castle ActiveRecord "Could not compile the mapping document: (string)"

  - by Nick

  Hi I am having getting an exception when trying to initialize ActiveRecord and I cannot figure out what I am missing. I am trying to convince the company I work for to use Castle ActiveRecord and it won't look good if I can't demonstrate how it works. I have work on projects before with Castle ActiveRecord and I had never experience this problem before. Thanks for your help The exception that I get is Stack Trace: at Castle.ActiveRecord.ActiveRecordStarter.AddXmlString(Configuration config, String xml, ActiveRecordModel model) at Castle.ActiveRecord.ActiveRecordStarter.AddXmlToNHibernateCfg(ISessionFactoryHolder holder, ActiveRecordModelCollection models) at Castle.ActiveRecord.ActiveRecordStarter.RegisterTypes(ISessionFactoryHolder holder, IConfigurationSource source, IEnumerable`1 types, Boolean ignoreProblematicTypes) at Castle.ActiveRecord.ActiveRecordStarter.Initialize(IConfigurationSource source, Type[] types) at ConsoleApplication1.Program.Main(String[] args) in C:\Projects\CastleDemo\ConsoleApplication1\Program.cs:line 20 at System.AppDomain._nExecuteAssembly(Assembly assembly, String[] args) at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args) at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly() at System.Threading.ThreadHelper.ThreadStart_Context(Object state) at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state) at System.Threading.ThreadHelper.ThreadStart() Inner Exception: {"Could not compile the mapping document: (string)"} Below is my configuration file: <add key="connection.driver_class" value="NHibernate.Driver.SqlClientDriver" /> <add key="dialect" value="NHibernate.Dialect.MsSql2000Dialect" /> <add key="connection.provider" value="NHibernate.Connection.DriverConnectionProvider" /> <add key="connection.connection_string" value="Data Source=SPIROS\SQLX;Initial Catalog=CastleDemo;Integrated Security=SSPI" /> <add key="proxyfactory.factory_class" value="NHibernate.ByteCode.Castle.ProxyFactoryFactory, NHibernate.ByteCode.Castle" /> and this is the main method that runs the initialization: static void Main(string[] args) { //Configure ActiveRecord source XmlConfigurationSource source = new XmlConfigurationSource("../../config.xml"); // //Initialazi ActiveRecord ActiveRecordStarter.Initialize( source, typeof(Product)); // //Create Schema ActiveRecordStarter.CreateSchema(); // }

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• How can I copy a SQL record which has related records in other tables to the same database?

  - by DerekVS

  Hi. I created a function in C# which allows me to copy a record and its related children to a new record and new related children in the same database. (This is for an application that allows the use of previous work as a template for new work.) Anyway, it works great... Here's a description of how it accomplishes the copy: It populates a two-column memory-based look-up table with the current primary key of each record. Next, as it individually creates each new copy record, it updates the look-up table with the Identity PK of the new record [retrieved from SCOPE_IDENTITY()]. Now, when it copies over any related children, it can look up the new parent PK to set the FK on the new record. In testing, it only took a minute to copy a relational structure on a local instance of SQL Server 2005 Express Edition. Unfortunately it is proving to be horribly slow in production! My users are dealing with 60,000+ records per parent record over the LAN to our SQL Server! While my copy function still works, each of those records represents an individual SQL UPDATE command and it loads the SQL Server at about 17% CPU from its normal 2% idle. I just finished testing a 50,000 record copy and it took almost 20 minutes! Is there a way to duplicate this functionality in SQL queries or stored procecures to make the SQL server do all of the copy work instead of blasting it over the LAN from each client? (We're running Microsoft SQL Server 2005 Standard Edition.) Thanks! -Derek

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• NHibernate: Mapping different dynamic components based on a discriminator

  - by George Mauer

  My domain entities each have a set of "fixed" properties and a set of "dynamic" properties which can be added at runtime. I handle this by using NHibernate's dynamic-component functionality. public class Product { public virtual Guid Id { get; } public virtual string Name { get; set;} public virtual IDictionary DynamicComponents { get; } } Now I have the following situation public class Customer { public virtual Guid Id { get; } public virtual string Type { get; set;} public virtual IDictionary DynamicProperties { get; } } Where a CustomerType is something like "Online" or "InPerson". Furthermore an Online customer has dynamic properties "Name" and "IPAddress" and an InPerson Customer has dynamic properties "Name" and "Salesman". Which customer types are available and the extra properties on them are configured in meta-data which is used to generate hbm files on application start. I could figure out some way to knock this together using an intermediate DTO layer, but is there any support in NHibernate for this scenario? The only difficulty seems to be that all the different "types" of customer map to the same Customer class.

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• Another Security Exception on GoDaddy after Login attempt

  - by Brian Boatright

  Host: GoDaddy Shared Hosting Trust Level: Medium The following happens after I submit a valid user/pass. The database has read/write permissions and when I remove the login requirement on an admin page that updates the database work as expected. Has anyone else had this issue or know what the problem is? Anyone? Server Error in '/' Application. Security Exception Description: The application attempted to perform an operation not allowed by the security policy. To grant this application the required permission please contact your system administrator or change the application's trust level in the configuration file. Exception Details: System.Security.SecurityException: Request for the permission of type 'System.Security.Permissions.FileIOPermission, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed. Source Error: An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below. Stack Trace: [SecurityException: Request for the permission of type 'System.Security.Permissions.FileIOPermission, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.] System.Security.CodeAccessSecurityEngine.Check(Object demand, StackCrawlMark& stackMark, Boolean isPermSet) +0 System.Security.CodeAccessPermission.Demand() +59 System.IO.FileStream.Init(String path, FileMode mode, FileAccess access, Int32 rights, Boolean useRights, FileShare share, Int32 bufferSize, FileOptions options, SECURITY_ATTRIBUTES secAttrs, String msgPath, Boolean bFromProxy) +684 System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share) +114 System.Configuration.Internal.InternalConfigHost.StaticOpenStreamForRead(String streamName) +80 System.Configuration.Internal.InternalConfigHost.System.Configuration.Internal.IInternalConfigHost.OpenStreamForRead(String streamName, Boolean assertPermissions) +115 System.Configuration.Internal.InternalConfigHost.System.Configuration.Internal.IInternalConfigHost.OpenStreamForRead(String streamName) +7 System.Configuration.Internal.DelegatingConfigHost.OpenStreamForRead(String streamName) +10 System.Configuration.UpdateConfigHost.OpenStreamForRead(String streamName) +42 System.Configuration.BaseConfigurationRecord.InitConfigFromFile() +437 Version Information: Microsoft .NET Framework Version:2.0.50727.1433; ASP.NET Version:2.0.50727.1433

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• iPhone SDK: Rendering a CGLayer into an image object

  - by codemercenary

  Hi all, I am trying to add a curved border around an image downloaded and to be displayed in a UITableViewCell. In the large view (ie one image on the screen) I have the following: productImageView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:product.image]]; [productImageView setAlpha:0.4]; productImageView.frame = CGRectMake(10.0, 30.0, 128.0, 128.0); CALayer *roundedlayer = [productImageView layer]; [roundedlayer setMasksToBounds:YES]; [roundedlayer setCornerRadius:7.0]; [roundedlayer setBorderWidth:2.0]; [roundedlayer setBorderColor:[[UIColor darkGrayColor] CGColor]]; [self addSubview:productImageView]; In the table view cell, to get it to scroll fast, an image needs to be drawn in the drawRect method of a UIView which is then added to a custom cell. so in drawRect - (void)drawRect:(CGRect)rect { ... point = CGPointMake(boundsX + LEFT_COLUMN_OFFSET, UPPER_ROW_TOP); //CALayer *roundedlayer = [productImageView layer]; //[roundedlayer setMasksToBounds:YES]; //[roundedlayer setCornerRadius:7.0]; //[roundedlayer setBorderWidth:2.0]; //[roundedlayer setBorderColor:[[UIColor darkGrayColor] CGColor]]; //[productImageView drawRect:CGRectMake(boundsX + LEFT_COLUMN_OFFSET, UPPER_ROW_TOP, IMAGE_WIDTH, IMAGE_HEIGHT)]; // [productImageView.image drawInRect:CGRectMake(boundsX + LEFT_COLUMN_OFFSET, UPPER_ROW_TOP, IMAGE_WIDTH, IMAGE_HEIGHT)]; So this works well, but if I remove the comment and try to show the rounded CA layer the scrolling goes really slow. To fix this I suppose I would have to render this image context into a different image object, and store this in an array, then set this image as something like: productImageView.image = (UIImage*)[imageArray objectAtIndex:indexPath.row]; My question is "How do I render this layer into an image?" TIA.

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• Why a Swing app stops my Java servlet ?

  - by Frank

  I have a Swing runnable app which updates messages, then I have a Java servlet that gets messages from Paypal IPN (Instant Payment Notification), when the servlet starts up, in the init(), I starts the Swing runnable app which opens a desktop window, but 30 minutes later an error in the Swing caused the servlet to stop, how can that happen ? Because the runnable is running on it's own thread, servlet started that thread, why an error in that thread will cause the servlet to stop ? public class License_Manager extends JPanel implements Runnable { License_Manager() { Do_GUI(); ... start(); } public static void main(String[] args) { // Schedule a job for the event-dispatching thread : creating and showing this application's GUI. javax.swing.SwingUtilities.invokeLater(new Runnable() { public void run() { Create_And_Show_GUI(); } }); } } public class PayPal_Servlet extends HttpServlet { public void init(ServletConfig config) throws ServletException { super.init(config); License_Manager.main(null); } protected void processRequest(HttpServletRequest request,HttpServletResponse response) throws ServletException,IOException { } } And besides the error don't even have anything to do with my code, it looks like this : Exception in thread "AWT-EventQueue-0" java.lang.ArrayIndexOutOfBoundsException: 17 = 0 at java.util.Vector.elementAt(Vector.java:427) at javax.swing.DefaultListModel.getElementAt(DefaultListModel.java:70) at javax.swing.plaf.basic.BasicListUI.paintCell(BasicListUI.java:191) at javax.swing.plaf.basic.BasicListUI.paintImpl(BasicListUI.java:304) at javax.swing.plaf.basic.BasicListUI.paint(BasicListUI.java:227) at javax.swing.plaf.ComponentUI.update(ComponentUI.java:143) at javax.swing.JComponent.paintComponent(JComponent.java:763) at javax.swing.JComponent.paint(JComponent.java:1029) at javax.swing.JComponent.paintChildren(JComponent.java:864) at javax.swing.JComponent.paint(JComponent.java:1038) at javax.swing.JViewport.paint(JViewport.java:747) at javax.swing.JComponent.paintChildren(JComponent.java:864) at javax.swing.JComponent.paint(JComponent.java:1038) at javax.swing.JComponent.paintToOffscreen(JComponent.java:5124) at javax.swing.BufferStrategyPaintManager.paint(BufferStrategyPaintManager.java:278) at javax.swing.RepaintManager.paint(RepaintManager.java:1220) at javax.swing.JComponent._paintImmediately(JComponent.java:5072) at javax.swing.JComponent.paintImmediately(JComponent.java:4882) at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:803) at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:714) at javax.swing.RepaintManager.seqPaintDirtyRegions(RepaintManager.java:694) at javax.swing.SystemEventQueueUtilities$ComponentWorkRequest.run(SystemEventQueueUtilities.java:128) at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209) at java.awt.EventQueue.dispatchEvent(EventQueue.java:597) at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269) at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161) at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)

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• Flex 3.5.0; Update ComboBox display list upon dataprovider change

  - by Gabriel Poama-Neagra

  Hello, I have two related ComboBoxes ( continents, and countries ). When the continents ComboBox changes I request a XML from a certain URL. When I receive that XML i change the DataProvider for the countries ComboBox, like this: public function displayCountryArray( items:XMLList ):void { this.resellersCountryLoader.alpha = 0; this.resellersCountry.dataProvider = items; this.resellersCountry.dispatchEvent( new ListEvent( ListEvent.CHANGE ) ); } I dispatch the ListEvent.CHANGE because I use it to change another ComboBox so please ignore that (and the 1st line ). So, my problem is this: I select "ASIA" from the first continents, then the combobox DATA get's updated ( I can see that because the first ITEM is an item with the label '23 countries' ). I click the combo then I can see the countries. NOW, I select "Africa", the first item is displayed, with the ComboBox being closed, then when I click it, the countries are still the ones from Asia. Anyway, if I click an Item in the list, then the list updates correctly, and also, it has the correct info ( as I said it affects other ComboBoxes ). SO the only problem is that the display list does not get updated. In this function I tried these approaches Converting XMLList to XMLCollection and even ArrayCollection Adding this.resellersCountry.invalidateDisplayList(); Triggering events like DATA_CHANGE and UPDATE_COMPLETE I know they don't make much sense, but I got a little desperate. Please note that when I used 3.0.0 SDK this did not happen. Sorry if I'm stupid, but the flex events are killing me.

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• We have multiple app servers running against a single database. How do I ensure that each row in a q

  - by Dave

  We have about 7 app servers running .NET windows services that ping a single sql server 2005 queue table and fetch a fixed amount of records to process at fixed intervals. The amount of records to process and the amount of time between fetches are both configurable and are initially set to 100 and 30 seconds initially. Currently, my queue table has an int status column which can be either "Ready, Processing, Complete, Error". The proc that fetches the records has a sql transaction with the following code inside the transaction: 1) Fetch x number of records into temp table where the status is "Ready". The select uses a holdlock hint 2) Update the status on those records in the Queue table to "Processing" The .NET services do some processing that may take seconds or even minutes per record. Another proc is called per record that simply updates the status to "Complete". The update proc has no transaction as I'm leaning on the implicit transaction as part of the update clause here. I don't know the traffic exceptions for this but figure it will be under 10k records per day. Is this the best way to handle this scenario? If so, are there any details that I've left out, such as a hint here or there? Thanks! Dave

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• Why is the UpdatePanel Response size changing on alternate requests?

  - by Decker

  We are using UpdatePanel in a small portion of a large page and have noticed a performance problem where IE7 becomes CPU bound and the control within the UpdatePanel takes a long time (upwards of 30 seconds) to render. We also noticed that Firefox does not seem to suffer from these delays. We ran both Fiddler (for IE) and Firebug (for Firefox) and noticed that the real problem lied with the amount of data being returned in update panel responses. Within the UpdatePanel control there is a table that contains a number of ListBox controls. The real problem is that EVERY OTHER TIME the response (from making ListBox selections) alternates from 30K to 430K. Firefox handles the 400+K response in a reasonable amount of time. For whatever reason, IE7 goes CPU bound while it is presumably processing this data. So irrespective of whether or not we should be using an UpdatePanel or not, we'd like to figure out why every other async postback response is larger by a factor of more than 10 than the previous one. When the response is in the 30K range, IE updates the display within a second. On the alternate times, the response time is well over 10 times longer. Any idea why this alternating behavior should be happening with an UpdatePanel?

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• Getting Facebook Posts Permalink from Facebook Graph API Search

  - by Alexia

  I want to use the Facebook Graph API to search the public status updates concerning a keyword. For example, this works great: http://graph.facebook.com/search?q=obama&type=post It shows me all the posts with the word "obama" in it. If the post is a picture, it actually returns a field called "link" which is the permalink to the picture on the actual Facebook website, in the user's profile. Which is exactly what I want, but for pictures. But if the post in question is just a status update, i.e. just text, all it returns is the 3 fields: message, created_time, and updated_time. How do I view this actual status update on www.facebook.com? I realize I can view it on graph.facebook.com in JSON format, but I want to actually be able to show the permalink to the status update, or post. The final result I would like to retrieve might look something like this: http://www.facebook.com/[user id]/posts/[post id] With the [user id] and [post id] fields swapped out with the actual IDs, obviously. TIA!

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• CGImageCreateWithMask with an image as a mask

  - by Peyman

  Hi I am trying to use an image (painted as Core Graphics) to create a mask. What I am doing is this 1. creating a Core Graphics path CGContextSaveGState(context); CGContextBeginPath(context); CGContextMoveToPoint(context,circleCenter.x,circleCenter.y); //CGContextSetAllowsAntialiasing(myBitmapContext, YES); CGContextAddArc(context,circleCenter.x, circleCenter.y,circleRadius,startingAngle, endingAngle, 0); // 0 is counterclockwise CGContextClosePath(context); CGContextSetRGBStrokeColor(context,1.0,0.0,0.0,1.0); CGContextSetRGBFillColor(context,1.0,0.0,0.0,0.2); CGContextDrawPath(context, kCGPathFillStroke); 2. then I'm saving the context that has the path just painted CGImageRef pacmanImage = CGBitmapContextCreateImage (context); 3. restoring the context CGContextRestoreGState(context); CGContextSaveGState(context); 4. creating a 1 bit mask (which will provide the black-white mask) bitsPerComponent = 1; bitsPerPixel = bitsPerComponent * 1 ; bytesPerRow = (CGImageGetWidth(imgToMaskRef) * bitsPerPixel); mask = CGImageCreate(CGImageGetWidth(imgToMaskRef), CGImageGetHeight(imgToMaskRef), bitsPerComponent, bitsPerPixel, bytesPerRow, greyColorSpace, kCGImageAlphaNone, CGImageGetDataProvider(pacmanImage), NULL, //decode YES, //shouldInterpolate kCGRenderingIntentDefault); 5. masking the imgToMaskRef (which is a CGImageRef imgToMaskRef =imgToMask.CGImage;) with the mask just created imageMaskedWithImage = CGImageCreateWithMask(imgToMaskRef, mask); CGContextDrawImage(context,imgRectBox, imageMaskedWithImage); CGImageRef maskedImageFinal = CGBitmapContextCreateImage (context); returning the maskedImageFinal to the caller of this method (as wheelChoiceMadeState, which is a CGImageRef) who then updates the CALayer contents property with the image theLayer.contents = (id) wheelChoiceMadeState; the problem I am seeing is that the mask does not work properly and looks very strange indeed. I get strange patterns across the path painted by the Core Graphics. My hunch is there is something with CGImageGetDataProvider() but I am not sure. Any help would be appreciated thank you

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• Why is software quality so problematic?

  - by Yuval A

  Even when viewing the subject in the most objective way possible, it is clear that software, as a product, generally suffers from low quality. Take for example a house built from scratch. Usually, the house will function as it is supposed to. It will stand for many years to come, the roof will support heavy weather conditions, the doors and the windows will do their job, the foundations will not collapse even when the house is fully populated. Sure, minor problemsdo occur, like a leaking faucet or a bad paint job, but these are not critical. Software, on the other hand is much more susceptible to suffer from bad quality: unexpected crashes, erroneous behavior, miscellaneous bugs, etc. Sure, there are many software projects and products which show high quality and are very reliable. But lots of software products do not fall in this category. Take into consideration paradigms like TDD which its popularity is on the rise in the past few years. Why is this? Why do people have to fear that their software will not work or crash? (Do you walk into a house fearing its foundations will collapse?) Why is software - subjectively - so full of bugs? Possible reasons: Modern software engineering exists for only a few decades, a small time period compared to other forms of engineering/production. Software is very complicated with layers upon layers of complexity, integrating them all is not trivial. Software development is relatively easy to start with, anyone can write a simple program on his PC, which leads to amateur software leaking into the market. Tight budgets and timeframes do not allow complete and high quality development and extensive testing. How do you explain this issue, and do you see software quality advancing in the near future?

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• Error in Visual Studio 2008 with SSRS 2005 report projects

  - by Tj Kellie

  Has anyone found a good workaound for opening or editing an SSRS 2005 report project with Visual Studio 2008 yet? Will the SQL server 2008 tools be the migration path for these report projects in the future? I really dont want to have to keep VS2005 installed forever just to update SSRS reports. After an upgrade to VS2008 an existing solution that contains a VS2005 SSRS reports project will not open. From what I understand the SQL Server 2005 tools dont know about VS2008 so they will not integrate into the IDE. So currently I switch back to VS2005 for any updates to this project, and get an error loading project message everytime I open the solution in 2008. EDIT on solution: I was able to install the shared component for BDIS from the SQL2008 disc and am now able to open and update my SSRS 2005 .rdl project items within VS2008. Note to others: If you edit your SSRS 2005 reports in VS2008 and re-save you will not be able to edit them in VS2005 anymore, or deploy them to a 2005 server. They are up-converted to 2008 report files.

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• Issue configuring Oracle database for SSL

  - by Santhosha

  Hello, I want to setup Oracle for SSL communication. I am not using SSL authentication for database user. As first requirement, generated self signed certificate using OpenSSL and added certificate to wallet. The wallet location is specified in server configuration. Created listener and it is starting however it does not provide any service. The default listener (non SSL) is working fine. When I execute LSNRCTL.EXE status SSLLISTENER it gives below output. STATUS of the LISTENER Alias SSLLISTENER Version TNSLSNR for 32-bit Windows: Version 11.1.0.6.0 - Production Start Date 14-NOV-2009 01:47:08 Uptime 16 days 22 hr. 14 min. 3 sec Trace Level off Security ON: Local OS Authentication SNMP OFF Listener Parameter File C:\app\Administrator\product\11.1.0\db_1\network\admin\listener.ora Listener Log File c:\app\administrator\diag\tnslsnr\\ssllistener\alert\log.xml Listening Endpoints Summary... (DESCRIPTION=(ADDRESS=(PROTOCOL=tcps)(HOST=)(PORT =2484))) The listener supports no services The command completed successfully Here is exact content of various files after configuration. 1) File Name: tnsnames.ora ORCL = (DESCRIPTION = (ADDRESS_LIST = (ADDRESS = (PROTOCOL = TCP)(HOST = )(PORT 1521)) ) (CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME = orcl) ) ) 2) File Name: sqlnet.ora SSL_VERSION = 0 NAMES.DIRECTORY_PATH= (TNSNAMES, EZCONNECT) sqlnet.authentication_services= (NONE) tcp.validnode_checking = no tcp.invited_nodes=(PS0803.oraebs.com,PS2948,PS5098) SSL_CLIENT_AUTHENTICATION = FALSE WALLET_LOCATION = (SOURCE = (METHOD = FILE) (METHOD_DATA = (DIRECTORY = C:\app\Administrator\admin\orcl\Server_Wallet) ) ) 3) File Name: listener.ora S SL_CLIENT_AUTHENTICATION = FALSE WALLET_LOCATION = (SOURCE = (METHOD = FILE) (METHOD_DATA = (DIRECTORY = C:\app\Administrator\admin\orcl\Server_Wallet) ) ) LISTENER = (DESCRIPTION_LIST = (DESCRIPTION = (ADDRESS = (PROTOCOL = IPC)(KEY = EXTPROC1521)) ) (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP)(HOST = )(PORT 1521)) ) ) SSLLISTENER = (DESCRIPTION = (ADDRESS = (PROTOCOL = TCPS)(HOST = )(PORT = 2484)) ) Thanks Santhosh

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• sscanf wrapping function to advance string pointer in C

  - by Dusty

  I have a function that makes a series of calls to sscanf() and then, after each, updates the string pointer to point to the first character not consumed by sscanf() like so: if(sscanf(str, "%d%n", &fooInt, &length) != 1) { // error handling } str+=length; In order to clean it up and avoid duplicating this several times over, i'd like to encapsulate this into a nice utility function that looks something like the following: int newSscanf ( char ** str, const char * format, ...) { int rv; int length; char buf[MAX_LENGTH]; va_list args; strcpy(buf, format); strcat(buf, "%n"); va_start(args, format); rv = vsscanf(*str, buf, args, &length); va_end(args); *str += length; return rv; } Then I could simply the calls as below to remove the additional parameter/bookkeeping: if(newSscanf(&str, "%d", &fooInt) != 1) { // error handling } Unfortunately, I can't find a way to append the &length parameter onto the end of the arg list directly or otherwise inside newSscanf(). Is there some way to work around this, or am I just as well off handling the bookkeeping by hand at each call?

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• Are eCommerce platforms worth it for large scale systems?

  - by codeflunky

  My company and I are building a new system for a relatively large client. We are going to be replacing their entire system, which includes some eCommerce aspects to it among many other things. It is not a typical public shopping site, and there are many things about the system (both back end and front end) that are quite different. Some of the people I work for are convinced that we should be using a third party product to implement the eCommerce pieces (shopping cart, catalog management). Their opinion is that it is a solved problem, and we shouldn't have to reinvent it. Given that direction, I have reviewed around ten different .NET based eCommerce platforms, and I struggle to imagine how we will be able to smoothly integrate any of them without a lot of friction. They are so all-encompassing that I feel like they are probably better suited for implementing simple shopping sites rather than larger systems that happen to have some eCommerce aspects to them. We have a really nice architecture planned for everything else (Entity Framework, ASP.NET MVC, etc.), and my gut is telling me that trying to introduce a third party platform will cause unnecessary fragmentation and difficulty. I would love to hear some opinions from people who have been there. Have you used a third party platform for eCommerce? Was it a typical shopping site or something different? Did you feel it was a help or a hinderance? Thanks.

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• Best practice: git, github, lighthouse and 2 developers

  - by Alxandr

  I'm setting up a new project and plan on using git and github for sourcecontroll and hosting of repo and lighthouse for bugtracking. I've been working with git for some while now, but only been using it for more of a backup solution than collaborate coding solution. Also, I've noticed that in github you can setup a servicehook to lighthouse so that whenever you push to github it notifies lighthouse of the changes. This uses a token for user-authentication and has the ability to change tickets to resolved etc. However, this token I believe functions that way so that whenever a user pushes to the repo (dosn't matter who), it's the owner of the repo that "updates" to lighthouse. This is a problem. So, I believe it is necessary with 2 separate repos at github (one for each dev), and I'm wondering about the workflow that should be used. Any1 care to shred any light on this matter? Like when to pull and push (and where), and how to make the two github repos in sync or something like that? Or another solution to the problem altogether.

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• How Can I tell where log4net thinks it's getting it's config file from?

  - by Mike

  Hi, I have the following log from the log4net debug log: log4net: DefaultRepositorySelector: repository [log4net-default-repository] already exists, using repository type [log4net.Repository.Hierarchy.Hierarchy] log4net: XmlConfigurator: configuring repository [log4net-default-repository] using file [log4net.config] watching for file updates log4net: XmlConfigurator: configuring repository [log4net-default-repository] using file [log4net.config] log4net: XmlConfigurator: configuring repository [log4net-default-repository] using stream log4net:ERROR XmlConfigurator: Error while loading XML configuration System.Xml.XmlException: ' ' is an unexpected token. The expected token is ''. Line 7, position 184. at System.Xml.XmlTextReaderImpl.Throw(Exception e) at System.Xml.XmlTextReaderImpl.Throw(String res, String[] args) at System.Xml.XmlTextReaderImpl.ThrowUnexpectedToken(String expectedToken1, String expectedToken2) at System.Xml.XmlTextReaderImpl.ThrowUnexpectedToken(Int32 pos, String expectedToken1, String expectedToken2) at System.Xml.XmlTextReaderImpl.ParseAttributes() at System.Xml.XmlTextReaderImpl.ParseElement() at System.Xml.XmlTextReaderImpl.ParseElementContent() at System.Xml.XmlTextReaderImpl.Read() at System.Xml.XmlTextReader.Read() at System.Xml.XmlValidatingReaderImpl.Read() at System.Xml.XmlValidatingReader.Read() at System.Xml.XmlLoader.LoadNode(Boolean skipOverWhitespace) at System.Xml.XmlLoader.LoadDocSequence(XmlDocument parentDoc) at System.Xml.XmlLoader.Load(XmlDocument doc, XmlReader reader, Boolean preserveWhitespace) at System.Xml.XmlDocument.Load(XmlReader reader) at log4net.Config.XmlConfigurator.Configure(ILoggerRepository repository, Stream configStream) The only problem is, I have no idea where it thinks it's getting this log4net.config file, since in my AssemblyInfo.cs I have defined it to be: [assembly: log4net.Config.XmlConfigurator(ConfigFile = "api4net.config", Watch = true)] Is there an easy way to determine where log4net is loading this mystical log4net.config that has some xml errors?

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• Source-to-source compiler framework wanted

  - by cheungcc_2000

  Dear all, I used to use OpenC++ (http://opencxx.sourceforge.net/opencxx/html/overview.html) to perform code generation like: Source: class MyKeyword A { public: void myMethod(inarg double x, inarg const std::vector<int>& y, outarg double& z); }; Generated: class A { public: void myMethod(const string& x, double& y); // generated method below: void _myMehtod(const string& serializedInput, string& serializedOutput) { double x; std::vector<int> y; // deserialized x and y from serializedInput double z; myMethod(x, y, z); } }; This kind of code generation directly matches the use case in the tutorial of OpenC++ (http://www.csg.is.titech.ac.jp/~chiba/opencxx/tutorial.pdf) by writing a meta-level program for handling "MyKeyword", "inarg" and "outarg" and performing the code generation. However, OpenC++ is sort of out-of-date and inactive now, and my code generator can only work on g++ 3.2 and it triggers error on parsing header files of g++ of higher version. I have looked at VivaCore, but it does not provide the infra-structure for compiling meta-level program. I'm also looking at LLVM, but I cannot find documentation that tutor me on working out my source-to-source compilation usage. I'm also aware of the ROSE compiler framework, but I'm not sure whether it suits my usage, and whether its proprietary C++ front-end binary can be used in a commercial product, and whether a Windows version is available. Any comments and pointers to specific tutorial/paper/documentation are much appreciated.

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• Can a masterpage reference another masterpage with the same content and contentplaceholder tags?

  - by Peach

  Current Setup I currently have three masterpages and content pages in the following hierarchy : One root-level masterpage that displays the final result. Call this "A" Two sibling pages that don't reference each other but contain all the same contentplaceholder elements, just in a different order with different <div>'s surrounding them. Both reference the root-level masterpage. Call these "B1" and "B2". Several content pages that reference one or the other sibling master pages above (not both). Call these "C1" through "C-whatever". Basically I have: Cn = B1 = A Cm = B2 = A This hierarchy works fine. Desired Setup What I want to do is add in a new level to this hierarchy (a new master page) between the content pages and the sibling masterpages. Basically so it's like this: One root-level masterpage that displays the final result. Two sibling pages plus a third sibling. Call it B3 A new middle masterpage that dynamically 'chooses' one of the sibling masterpages. The desired behaviour is to pass through the content given by C directly to Bn without modifying it. The only thing D actively does is choose which Bn. Call this new masterpage D. Several content pages that reference the new middle master page instead of the old siblings. The challenge to this is, I'm working within the confines of a rather complex product and I cannot change the original two sibling masterpages (B1 and B2) or content pages (C) in any meaningful way. I want: Cn = D = B1 = A Cm = D = B2 = A Ck = D = B3 = A Essentially, D should "pass through" all it's content to whichever B-level masterpage it chooses. I can't put this logic in the C-level pages. Additional Details All B-level pages have the same content/contentplaceholder tags, just ordered and styled differently. D can be as convoluted as it has to be, so long as it doesn't require modifying C or B. I'm using ASP.Net 2.0 Is this possible?

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