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  • Hacking Smart Phones

    Rootkits used to show smart phones can be hacked, hijacked and exploited without their owner's knowledge Operating system - Shopping - Consumer Electronics - Communications - Wireless

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  • Adding Attributes to Generated Classes

    ASP.NET MVC 2 adds support for data annotations, implemented via attributes on your model classes.  Depending on your design, you may be using an OR/M tool like Entity Framework or LINQ-to-SQL to generate your entity classes, and you may further be using these entities directly as your Model.  This is fairly common, and alleviates the need to do mapping between POCO domain objects and such entities (though there are certainly pros and cons to using such entities directly). As an example, the current version of the NerdDinner application (available on CodePlex at nerddinner.codeplex.com) uses Entity Framework for its model.  Thus, there is a NerdDinner.edmx file in the project, and a generated NerdDinner.Models.Dinner class.  Fortunately, these generated classes are marked as partial, so you can extend their behavior via your own partial class in a separate file.  However, if for instance the generated Dinner class has a property Title of type string, you cant then add your own Title of type string for the purpose of adding data annotations to it, like this: public partial class Dinner { [Required] public string Title { get;set; } } This will result in a compilation error, because the generated Dinner class already contains a definition of Title.  How then can we add attributes to this generated code?  Do we need to go into the T4 template and add a special case that says if were generated a Dinner class and it has a Title property, add this attribute?  Ick. MetadataType to the Rescue The MetadataType attribute can be used to define a type which contains attributes (metadata) for a given class.  It is applied to the class you want to add metadata to (Dinner), and it refers to a totally separate class to which youre free to add whatever methods and properties you like.  Using this attribute, our partial Dinner class might look like this: [MetadataType(typeof(Dinner_Validation))] public partial class Dinner {}   public class Dinner_Validation { [Required] public string Title { get; set; } } In this case the Dinner_Validation class is public, but if you were concerned about muddying your API with such classes, it could instead have been created as a private class within Dinner.  Having the validation attributes specified in their own class (with no other responsibilities) complies with the Single Responsibility Principle and makes it easy for you to test that the validation rules you expect are in place via these annotations/attributes. Thanks to Julie Lerman for her help with this.  Right after she showed me how to do this, I realized it was also already being done in the project I was working on. Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • Validating Data Using Data Annotation Attributes in ASP.NET MVC

    - by bipinjoshi
    The data entered by the end user in various form fields must be validated before it is saved in the database. Developers often use validation HTML helpers provided by ASP.NET MVC to perform the input validations. Additionally, you can also use data annotation attributes from the System.ComponentModel.DataAnnotations namespace to perform validations at the model level. Data annotation attributes are attached to the properties of the model class and enforce some validation criteria. They are capable of performing validation on the server side as well as on the client side. This article discusses the basics of using these attributes in an ASP.NET MVC application.http://www.bipinjoshi.net/articles/0a53f05f-b58c-47b1-a544-f032f5cfca58.aspx       

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  • Lazy HTML attributes wrapping in Internet Explorer

    - by AGS777
    Having encountered this Internet Explorer (all versions) behavior several times previously, I eventually decided to share this most probably useless knowledge. Excuse my lengthy explanations because I am going to show the behavior along with a very simple case when one can come across it inadvertently. Let's say I want to implement some simple templating solution in JavaScript. I wrote an HTML template with an intention to bind data to it on the client side: Please note, that name of the “sys-template” class is just a coincidence. I do not use any ASP.NET AJAX code in this simple example. As you can see we need to replace placeholders (property name wrapped with curly braces) with actual data. Also, as you can see, many of the placeholders are situated within attribute values and it is where the danger lies. I am going to use <a /> element HTML as a template and replace each placeholder pattern with respective properties’ values with a little bit of jQuery like this: You can find complete code along with the contextFormat() method definition at the end of the post. Let’s assume that value for the name property (that we want to put in the title attribute) of the first data item is “first tooltip”. So it consists of two words. When the replacement occurred, title attribute should contain the “first tooltip” text which we are going to see as a tooltip for the <a /> element. But let’s run the sample code in Internet Explorer and check it out. What you’ll see is that only the first word of the supposed “title” attribute’s content is shown. So, were is the rest of my attribute and what happened? The answer is obvious once you see the result of jQuery(“.sys-template”).html() line for the given HTML markup. In IE you’ll get the following <A id={id} class={cssClass} title={name} href="{source}" myAttr="{attr}">Link to {source}</A> See any difference between this HTML and the one shown earlier? No? Then look carefully. While the original HTML of the <a /> element is well-formed and all the attributes are correctly quoted, when you take the same HTML back in Internet Explorer (it doesn’t matter whether you use html() method from jQuery library or IE’s innerHTML directly), you lose attributes’ quotes for some of the attributes. Then, after replacement, we’ll get following HTML for our first data item. I marked the attribute value in question with italic: <A id=1 class=first title=first tooltip href="first.html" myAttr="firstAttr">Link to first.html</A> Now you can easily imagine for yourself what happens when this HTML is inserted into the document and why we do not see the second (and any subsequent words if any) of our title attribute in the tooltip. There are still two important things to note. The first one (and it actually the reason why I named the post “lazy wrapping” is that if value of the HTML attribute does contains spaces in the original HTML, then it WILL be wrapped with quotation marks. For example, if I wrote following on my page (note the trailing space for the title attribute value) <a href="{source}" title="{name}  " id="{id}" myAttr="{attr}" class="{cssClass}">Link to {source}</a> then I would have my placeholder quoted correctly and the result of the replacement would render as expected: The second important thing to note is that there are exceptions for the lazy attributes wrapping rule in IE. As you can see href attribute value did not contain spaces exactly as all the other attributes with placeholders, but it was still returned correctly quoted Custom attribute myAttr is also quoted correctly when returned back from document, though its placeholder value does not contain spaces either. Now, on account of the highly unlikely probability that you found this information useful and need a solution to the problem the aforementioned behavior introduces for Internet Explorer browser, I can suggest a simple workaround – manually quote the mischievous attributes prior the placeholder pattern is replaced. Using the code of contextFormat() method shown below, you would need to add following line right before the return statement: result = result.replace(/=({([^}]+)})/g, '="$1"'); Below please find original sample code:

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  • Generating Landed Cost Management Charges using Custom Pricing Attributes

    - by ChristineS-Oracle
    Learn how to incorporate Custom Pricing Attributes into Landed Cost Management through a new whitepaper.  The new application, Landed Cost Management (LCM), enables exact shipment charges to be applied to incoming receipts. These charges are calculated using the Freight and Special Charges functionality from Advanced Pricing within the Pricing Transaction Entity of “Purchasing”.Advanced Pricing is very flexible in that custom attributes can be defined to derive specific charges. The way that Landed Cost Management builds these attributes is different from the processing for Advanced Pricing with Purchasing.The whitepaper can be downloaded from document Oracle Advanced Pricing White Papers, Doc ID 136687.1.

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  • CRM Webcast: Territory Setup and Manage Matching Attributes

    - by LuciaC
    Subject:  Territory Setup and Manage Matching Attributes Date: July 9, 2013 at 1pm ET, 12pm CT, 11am MT, 10am PT, 6pm, BST (London, GMT+01:00), 10:30 pm IST (Mumbai, GMT+05:30)Territories are used in a number of different EBS CRM applications, including Sales, Field Service and Service Contracts.  If you want to know more about how territories work and how to set them up, join our experts in this webcast.  The webcast will a demonstrate a high level setup for one of the Sales products and examples of how other applications use the Territory Manager. Topics will include: Enabling Matching Attributes Custom Matching Attributes Examples for Account, Leads, Quote, Proposals, Opportunities in the Sales product. Running Concurrent Requests Details & Registration: Doc ID 1544622.1

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  • Accessing wrapped method attribute in C#

    - by prostynick
    I have following code: public static void ProcessStep(Action action) { //do something here if (Attribute.IsDefined(action.Method, typeof(LogAttribute))) { //do something here [1] } action(); //do something here } For easy use I have some similar methods using method above. For example: public static void ProcessStep(Action<bool> action) { ProcessStep(() => action(true)); //this is only example, don't bother about hardcoded true } But when I use the second method (the one above), even if original action had attribute, code [1] will not be executed. How can I find if method is only wrapper and underlying method contains attribute and how to access this attribute?

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  • ASP MVC C#: Is it possible to pass dynamic values into an attribute?

    - by wh0emPah
    Okay I'm very new to C# and i'm trying to create a little website using ASP MVC2. I want to create my own authorization attribute. but i need to pass some values if this is possible. For example: [CustomAuthorize(GroupID = Method Parameter?] public ActionResult DoSomething(int GroupID) { return View(""); } I want to authorize the access to a page. but it depends on the value passed to the controller. So the authorization depends on the groupID. Is this possible to achieve this in any way?. Thanks in advance.

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  • When is my View too smart?

    - by Kyle Burns
    In this posting, I will discuss the motivation behind keeping View code as thin as possible when using patterns such as MVC, MVVM, and MVP.  Once the motivation is identified, I will examine some ways to determine whether a View contains logic that belongs in another part of the application.  While the concepts that I will discuss are applicable to most any pattern which favors a thin View, any concrete examples that I present will center on ASP.NET MVC. Design patterns that include a Model, a View, and other components such as a Controller, ViewModel, or Presenter are not new to application development.  These patterns have, in fact, been around since the early days of building applications with graphical interfaces.  The reason that these patterns emerged is simple – the code running closest to the user tends to be littered with logic and library calls that center around implementation details of showing and manipulating user interface widgets and when this type of code is interspersed with application domain logic it becomes difficult to understand and much more difficult to adequately test.  By removing domain logic from the View, we ensure that the View has a single responsibility of drawing the screen which, in turn, makes our application easier to understand and maintain. I was recently asked to take a look at an ASP.NET MVC View because the developer reviewing it thought that it possibly had too much going on in the view.  I looked at the .CSHTML file and the first thing that occurred to me was that it began with 40 lines of code declaring member variables and performing the necessary calculations to populate these variables, which were later either output directly to the page or used to control some conditional rendering action (such as adding a class name to an HTML element or not rendering another element at all).  This exhibited both of what I consider the primary heuristics (or code smells) indicating that the View is too smart: Member variables – in general, variables in View code are an indication that the Model to which the View is being bound is not sufficient for the needs of the View and that the View has had to augment that Model.  Notable exceptions to this guideline include variables used to hold information specifically related to rendering (such as a dynamically determined CSS class name or the depth within a recursive structure for indentation purposes) and variables which are used to facilitate looping through collections while binding. Arithmetic – as with member variables, the presence of arithmetic operators within View code are an indication that the Model servicing the View is insufficient for its needs.  For example, if the Model represents a line item in a sales order, it might seem perfectly natural to “normalize” the Model by storing the quantity and unit price in the Model and multiply these within the View to show the line total.  While this does seem natural, it introduces a business rule to the View code and makes it impossible to test that the rounding of the result meets the requirement of the business without executing the View.  Within View code, arithmetic should only be used for activities such as incrementing loop counters and calculating element widths. In addition to the two characteristics of a “Smart View” that I’ve discussed already, this View also exhibited another heuristic that commonly indicates to me the need to refactor a View and make it a bit less smart.  That characteristic is the existence of Boolean logic that either does not work directly with properties of the Model or works with too many properties of the Model.  Consider the following code and consider how logic that does not work directly with properties of the Model is just another form of the “member variable” heuristic covered earlier: @if(DateTime.Now.Hour < 12) {     <div>Good Morning!</div> } else {     <div>Greetings</div> } This code performs business logic to determine whether it is morning.  A possible refactoring would be to add an IsMorning property to the Model, but in this particular case there is enough similarity between the branches that the entire branching structure could be collapsed by adding a Greeting property to the Model and using it similarly to the following: <div>@Model.Greeting</div> Now let’s look at some complex logic around multiple Model properties: @if (ModelPageNumber + Model.NumbersToDisplay == Model.PageCount         || (Model.PageCount != Model.CurrentPage             && !Model.DisplayValues.Contains(Model.PageCount))) {     <div>There's more to see!</div> } In this scenario, not only is the View code difficult to read (you shouldn’t have to play “human compiler” to determine the purpose of the code), but it also complex enough to be at risk for logical errors that cannot be detected without executing the View.  Conditional logic that requires more than a single logical operator should be looked at more closely to determine whether the condition should be evaluated elsewhere and exposed as a single property of the Model.  Moving the logic above outside of the View and exposing a new Model property would simplify the View code to: @if(Model.HasMoreToSee) {     <div>There’s more to see!</div> } In this posting I have briefly discussed some of the more prominent heuristics that indicate a need to push code from the View into other pieces of the application.  You should now be able to recognize these symptoms when building or maintaining Views (or the Models that support them) in your applications.

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  • Download Microsoft’s Series of ‘Work Smart’ Guides for Windows 8

    - by Asian Angel
    The general release date for Windows 8 is almost here and Microsoft has released a terrific set of free ‘Work Smart’ guides to help you get started with the new operating system. Whether it is an overview of Windows 8 itself, shortcut keys, backups, and more these guides cover a nice range of topics. HTG Explains: How Antivirus Software Works HTG Explains: Why Deleted Files Can Be Recovered and How You Can Prevent It HTG Explains: What Are the Sys Rq, Scroll Lock, and Pause/Break Keys on My Keyboard?

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  • Gmail : arrivée des « Smart Labels », une nouvelle fonctionnalité de tri automatisé des e-mails

    Gmail : arrivée des « Smart Labels » Une nouvelle fonctionnalité de tri automatisé des e-mails Plusieurs mois après le lancement de la boite aux lettres « prioritaire », Gmail s'essaye aux « libellés automatiques », une fonction intelligente de tri automatisé des messages, destinée à faciliter et réduire le temps de gestion des courriel. L'activation de cette fonctionnalité sur la section « Labs » créée trois libellés : Indésirables, Notifications et Forums. « Notifications » redirigera automatiquement les messages en provenance de Facebook, d'Amazon et ceux pouvant contenir des informations importantes sans venir pour autant de contacts réels. Le li...

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  • New Validation Attributes in ASP.NET MVC 3 Future

    - by imran_ku07
         Introduction:             Validating user inputs is an very important step in collecting information from users because it helps you to prevent errors during processing data. Incomplete or improperly formatted user inputs will create lot of problems for your application. Fortunately, ASP.NET MVC 3 makes it very easy to validate most common input validations. ASP.NET MVC 3 includes Required, StringLength, Range, RegularExpression, Compare and Remote validation attributes for common input validation scenarios. These validation attributes validates most of your user inputs but still validation for Email, File Extension, Credit Card, URL, etc are missing. Fortunately, some of these validation attributes are available in ASP.NET MVC 3 Future. In this article, I will show you how to leverage Email, Url, CreditCard and FileExtensions validation attributes(which are available in ASP.NET MVC 3 Future) in ASP.NET MVC 3 application.       Description:             First of all you need to download ASP.NET MVC 3 RTM Source Code from here. Then extract all files in a folder. Then open MvcFutures project from mvc3-rtm-sources\mvc3\src\MvcFutures folder. Build the project. In case, if you get compile time error(s) then simply remove the reference of System.Web.WebPages and System.Web.Mvc assemblies and add the reference of System.Web.WebPages and System.Web.Mvc 3 assemblies again but from the .NET tab and then build the project again, it will create a Microsoft.Web.Mvc assembly inside mvc3-rtm-sources\mvc3\src\MvcFutures\obj\Debug folder. Now we can use Microsoft.Web.Mvc assembly inside our application.             Create a new ASP.NET MVC 3 application. For demonstration purpose, I will create a dummy model UserInformation. So create a new class file UserInformation.cs inside Model folder and add the following code,   public class UserInformation { [Required] public string Name { get; set; } [Required] [EmailAddress] public string Email { get; set; } [Required] [Url] public string Website { get; set; } [Required] [CreditCard] public string CreditCard { get; set; } [Required] [FileExtensions(Extensions = "jpg,jpeg")] public string Image { get; set; } }             Inside UserInformation class, I am using Email, Url, CreditCard and FileExtensions validation attributes which are defined in Microsoft.Web.Mvc assembly. By default FileExtensionsAttribute allows png, jpg, jpeg and gif extensions. You can override this by using Extensions property of FileExtensionsAttribute class.             Then just open(or create) HomeController.cs file and add the following code,   public class HomeController : Controller { public ActionResult Index() { return View(); } [HttpPost] public ActionResult Index(UserInformation u) { return View(); } }             Next just open(or create) Index view for Home controller and add the following code,  @model NewValidationAttributesinASPNETMVC3Future.Model.UserInformation @{ ViewBag.Title = "Index"; Layout = "~/Views/Shared/_Layout.cshtml"; } <h2>Index</h2> <script src="@Url.Content("~/Scripts/jquery.validate.min.js")" type="text/javascript"></script> <script src="@Url.Content("~/Scripts/jquery.validate.unobtrusive.min.js")" type="text/javascript"></script> @using (Html.BeginForm()) { @Html.ValidationSummary(true) <fieldset> <legend>UserInformation</legend> <div class="editor-label"> @Html.LabelFor(model => model.Name) </div> <div class="editor-field"> @Html.EditorFor(model => model.Name) @Html.ValidationMessageFor(model => model.Name) </div> <div class="editor-label"> @Html.LabelFor(model => model.Email) </div> <div class="editor-field"> @Html.EditorFor(model => model.Email) @Html.ValidationMessageFor(model => model.Email) </div> <div class="editor-label"> @Html.LabelFor(model => model.Website) </div> <div class="editor-field"> @Html.EditorFor(model => model.Website) @Html.ValidationMessageFor(model => model.Website) </div> <div class="editor-label"> @Html.LabelFor(model => model.CreditCard) </div> <div class="editor-field"> @Html.EditorFor(model => model.CreditCard) @Html.ValidationMessageFor(model => model.CreditCard) </div> <div class="editor-label"> @Html.LabelFor(model => model.Image) </div> <div class="editor-field"> @Html.EditorFor(model => model.Image) @Html.ValidationMessageFor(model => model.Image) </div> <p> <input type="submit" value="Save" /> </p> </fieldset> } <div> @Html.ActionLink("Back to List", "Index") </div>             Now just run your application. You will find that both client side and server side validation for the above validation attributes works smoothly.                      Summary:             Email, URL, Credit Card and File Extension input validations are very common. In this article, I showed you how you can validate these input validations into your application. I explained this with an example. I am also attaching a sample application which also includes Microsoft.Web.Mvc.dll. So you can add a reference of Microsoft.Web.Mvc assembly directly instead of doing any manual work. Hope you will enjoy this article too.   SyntaxHighlighter.all()

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  • Google I/O 2011: Smart App Design

    Google I/O 2011: Smart App Design Travis Green, Max Lin, Robert Kaplow, Jóhannes Kristinsson, Ryan McGee Learn how to recommend the unexpected, automate the repetitive, and distill the essential using machine learning. This session will show you how you can easily add smarts to your apps with the Prediction API, and how to create apps that rapidly adapt to new data. From: GoogleDevelopers Views: 10078 47 ratings Time: 01:01:04 More in Science & Technology

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  • Tweeting through the Genesis Smart Client Framework

    This article demonstrates a basic Twitter client as a Genesis Hosted Application for the Genesis Smart Client Framework...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • How to stop Office 2010 changing " and ' to smart quotes

    - by fatherjack
    I have recently upgraded to Office 2010 at work and there are a few things that are a real problem for me. As a T-SQL developer and SQL Server DBA I copy and paste code to and from various applications and if Word gets involved it can has disastrous consequences. There is an option that appears to be defaulted to "on" that changes a straight quote to what Word describes as a smart quote - see the image below. Note - the single quote suffers from the same effect. Now, getting to the point that...(read more)

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  • Getting Started with the Genesis Smart Client Framework on Visual Studio 2010

    Read this article if you are new to developing with the Genesis Smart Client Framework. It will guide you through the process of setting up your development environment and executing your first Genesis Hosted Application....Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • Introduction to SMART

    <b>Linux Magazine:</b> "Did you know your drive was SMART? Actually: Self-Monitoring, Analysis, and Reporting Technology. It can be used to gather information about your hard drives and offers some additional information about the status of your storage devices. It can also be used with other tools to help predict drive failure. "

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  • Custom attributes in Active Directory - determining usage/function and possible removal options?

    - by HopelessN00b
    I've bumped into a highly-customized Active Directory environment (2003 FL) that's got me wondering if there's any particularly easy way to figure out what a custom attribute's function is, and what, if anything, is "using" that particular attribute. And then what some good options for potentially removing custom attributes from the schema might be. Aside from a restore or starting from scratch. If such an option exists. For example, I think I can be fairly certain what the "isDumbass" attribute with a value of TRUE means, but not so much with "IRPextCONST", containing a value of 393684. Likewise, I'd think it should be pretty safe to delete the "isDumbass" attribute, but would like to a) be sure and b) find out what's querying or updating that value anyway, because I suspect that anything using that attribute might be next on the list of things to remove. Ideally, without having to run a search on the contents of every custom script and bit of source code I can get my hands on, of course. And finally, aside from rebuilding from scratch, or doing an authoritative AD restore from backups that don't exist... is there a way to delete a given custom attribute? (Not blank the value, but actually delete the attribute from the schema - some folks would rather not have attributes like "FaggotMeter" and "DouchebagCounter" hanging around.) I've been able to find and successfully test a method on Windows 2k, but it seems like Microsoft disabled this option in SP4, and the domain in question is a 2003 functional level.

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  • Bad sectors, S.M.A.R.T., SpinRite, firmware on platter and drive id questions.

    - by Christopher Galpin
    Is it possible for S.M.A.R.T. to give false readings (say I was fiddling with lots of recovery programs, transfers, so on and so forth) or is it absolutely a read-only direct correlation to the physical status of a drive? Does SpinRite level 5 "recover bad sectors" operate on those marked at the factory? Are they on the same level as your generic bad sector, with SpinRite thus having full access? (Also I'm curious if SMART's bad sector count is zero'd afterward or if it includes factory marked sectors.) The main firmware of some drives, like a WD Passport is stored on the platter. How is it protected? Is it through marking them as bad sectors? If so, I'm wondering if SpinRite's sector recovery could bring about firmware corruption on these drives. Is the failure of a drive to report valid identity information (hdparm -I /dev/xx) consistent with corrupted firmware, or just general disk failure? I may be misunderstanding the role of firmware here. I feel I've read a drive's identity information is on the platter, just like the partition tables and so on. Is this true? (Apologizes if this is more appropriate for SuperUser.)

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  • smartctl not returning on HBA that's secure-erasing a different drive

    - by Stu2000
    Whenever I run smartctl -i /dev/sd* where * is a drive that is plugged into the same host bus adapter as another drive that is currently being erased with an hdparm secure erase command, the smart command will just 'hang' and not return (blocked) until the erasure of the other drive is finished. To make matters worse you can't cntrl-c out of it. Has anyone else had this issue? Is there another way to retrieve smart data from a drive, which doesn't block? I noticed that I can still use the udevadm command to retrieve the serial and model of the drive which is useful but doesn't appear to have any smart data. Any information relating to this matter is appreciated, especially if you can tell me another way to retrieve the S.M.A.R.T data that might work. Regards, Stuart

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