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• Is php fileinfo sufficient to prevent upload of malicious files?

  - by Scarface

  Hey guys, I have searched around a bit, and have not really found a professional type response to how to have secure fileupload capability so I wanted to get the opinion of some of the experts on this site. I am currently allowing upload of mp3s and images, and while I am pretty confident in preventing xss and injection attacks on my site, I am not really familiar with fileupload security. I basically just use php fileinfo and check an array of accepted filetypes against the filetype. For images, there is the getimagesize function and some additional checks. As far as storing them, I just have a folder within my directory, because I want the users to be able to use the files. If anyone could give me some tips I would really appreciate it.

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• Why Is my json-object from AJAX not understood by javascript, even with 'json' dataType?

  - by pete

  My js code simply gets a json object from my server, but I think it should be automatically parsed and turned into an object with properties, yet it's not allowing access properly. $.ajax({ type: 'POST', url: '/misc/json-sample.js', data: {href: path}, // THIS IS THE POST DATA THAT IS PASSED IN TO THE DRUPAL MENU CALL TO GET THE MENU... dataType: 'json', success: function (datax) { if (datax.debug) { alert('Debug data: ' + datax.debug); } else { alert('No debug data: ' + datax.toSource() ) ; } The /misc/json-sample.js file is: [ { "path": "examplemodule/parent1/child1/grandchild1", "title": "First grandchild option", "children": false } ] (I have also been trying to return that object from drupal as follows, and the same results.) Drupal version of misc/json-sample.js: $items[] = array( 'path' = 'examplemodule/parent1/child1/grandchild1', 'title' = t('First grandchild option'), 'debug' = t('debug me!'), 'children' = FALSE ); print drupal_to_js($items); What happens (in FF, which has the toSource() capability) is the alert with 'No debug data: [ { "path": "examplemodule/parent1/child1/grandchild1", "title": "First grandchild option", "children": false } ] Thanks

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• Updating Silverlight with data. JSON or WCF?

  - by Alastair Pitts

  We will be using custom Silverlight 4.0 controls on our ASP.NET MVC web page to display data from our database and was wondering what the most efficient method was? We will be having returned values of up to 100k records (of 2 properties per record). We have a test that uses the HTML Bridge from Javascript to Silverlight. First we perform a post request to a controller action in the MVC web app and return JSON. This JSON is then passed to the Silverlight where it is parsed and the UI updated. This seems to be rather slow, with the stored procedure (the select) taking about 3 seconds and the entire update in the browser about 10-15sec. Having a brief look on the net, it seems that WCF is another option, but not having used it, I wasn't sure of it's capability or suitability. Does anyone have any experiences or recommendations?

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• _CrtDumpMemoryLeaks truncated output??

  - by Marin

  Hello, I am trying to use Visual Studio's capability to detect memory leaks, but I keep getting truncated output, like: Dumping objects -> {174} normal block at 0x0099ADB8, 48 bytes long. Data: <h:\najnovije\tru> 68 3A 5C 6E 61 6A 6E 6F 76 69 6A 65 5C 74 72 75 {170} normal block at 0x0099AD58, 32 bytes long. Data: <h:\najnovije\tru> 68 3A 5C 6E 61 6A 6E 6F 76 69 6A 65 5C 74 72 75 Object dump complete. What am I doing wrong? I added #define _CRTDBG_MAP_ALLOC #include <stdlib.h> #include <crtdbg.h> to the beginning of my code. Thank you.

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• Alternatives to connect to ORACLE database server without install the Oracle client.

  - by Salvador

  i am looking for an Delphi component to connect to an ORACLE database server in an direct way without install the oracle client. i knew the Oracle Data Access (ODAC) from DevArt. there are any other component with this capability? ODAC offers two connection modes to the Oracle server: connection through the Oracle Call Interface in Client mode and direct connection over TCP/IP in Direct mode. ODAC-based database applications are easy to deploy, do not require installation of other data provider layers. Thanks in advance.

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• Double Buffering with awt

  - by DDP

  Is double buffering (in java) possible with awt? Currently, I'm aware that swing should not be used with awt, so I can't use BufferStrategy and whatnot. If double buffering is possible with awt, do I have to write the buffer by hand? Unlike swing, awt doesn't seem to have the same built-in double buffering capability. If I do have to write the code by hand, is there a good tutorial to look at? Or is it just easier/advisable for a novice programmer to use swing instead? Sorry about the multi-step question. Thanks for your time :)

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• Business Objects Web Intelligence-style reporting in a Winform app. Is this possible?

  - by George

  I have a WinForm app that displays results in a Gridview control. If a user right mouse clicks on a row, he can then, from a popup menu, select a command to perform on the row much like windows File Explorer. But now I want to be able to give the user the ability to construct a filter so that he can control which rows are displayed in the grid w/o effecting the functionality of the application. I would also like the user to be able to select the columns/fields that he sees in the grid. For the basis of this question, let's assume that the data displayed in grid comes from a single table. business Objects' Web Intelligence and Desktop Intelligence applications give me very flexible and powerful reporting capabilities, but I want to integrate this capability into my WinForm application. Does Business Objects, or maybe Crystal Reports provide this sort of functionality? I can construct my own query builder but I'd rather not reinvent sliced bread.

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• How to profile a silverlight application?

  - by rudigrobler

  Is their any profilers that support Silverlight? I have tried ANTS (Version 3.1) without any success? Does version 4 support it? Any other products I can try? Updated since the release of Silverlight 4, it is now possible to do full profiling on SL applications... check out this article on the topic At PDC, I announced that Silverlight 4 came with the new CoreCLR capability of being profile-able by the VS2010 profilers: this means that for the first time, we give you the power to profile the managed and native code (user or platform) used by a Silverlight application. woohoo. kudos to the CLR team. Sidenote: From silverlight 1-3, one could only use things like xperf (see XPerf: A CPU Sampler for Silverlight) which is very powerful to see the layout/text/media/gfx/etc pipelines, but only gives the native callstack.) From SilverLite (PDC video, TechEd Iceland, VS2010, profiling, Silverlight 4)

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• Mobile Application Upgrade/Update Framework

  - by sharjeel

  I am developing a few mobile apps for different platforms including Blackberry, Windows Mobile, Android and Symbian S60. I want my mobile apps to have the capability of checking for updates before starting and in case a new version is available, prompt the user to upgrade. Moreover in certain cases (like security patches), the user must be forced to update or the app won't work. Surely I can cook some code to achieve the task but I was wondering if there are already existing framework to serve the purpose so that I don't have to re-invent the wheel and test all over?

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• Disabling multitasking on iPhone 3GS using UIApplicationExitsOnSuspend not working

  - by NobleK

  Hello I am developing an iPhone app where I don’t want/need the multitasking capability and I want my app to initiate every time I open it. I have set the UIApplicationExitsOnSuspend property in the info.plist and it does work when I test it on my iPhone 4 and in the simulator (which is also an ”iPhone 4”). The app calls applicationDidEnterBackground followed by applicationWillTerminate. However, when testing it on my wifes iPhone 3GS the property seems to be completely ignored and the program gets suspended/resumed. Both phones are running iOS 4.2.1. Someone has also confirmed this issue in another thread, with no solutions unfortunately: iPhone: how to test if UIApplicationExitsOnSuspend is working? Is there something I am missing to make this work? Any other ways to accomplish this? Thanx in advance

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• Setup Hibernate Session Factory in Tomcat

  - by Mark Estrada

  Hi All, I have been reading around the Hibernate core and I am still exploring some of its capability. It was mention in the docs that the SessionFactory is the heavyweight component of Hibernate thus it should be setup only once in a web application and in singleton. Each Session factory should pertain to one JDBC connection. Does anybody knows how to properly setup the session factory in tomcat web applications? Any links or tutorials would be better. Should I set it up as a contextlistener class also? Thanks.

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• Randomize numbers within a subset

  - by Samuel

  I have a array of integer numbers (say 1,2,3,4,5 or 1,2,3, ... 10 or 1,2,3, ... 50) from which I would like to get a random set of numbers ordered differently every time. Is there a utility method to do this? e.g. for 1,2,3,4,5 post randomization it might be either [1,5,4,2,3 or 2,1,3,5,4 or 3,1,2,4,5 or ...] I would like to know if there is a java utility method / class which already provides this capability?

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• Validating an Autocomplete field in Django

  - by anonymous coward

  I have models similar to the following: class Band(models.Model): name = models.CharField(unique=True) class Event(models.Model): name = models.CharField(max_length=50, unique=True) bands = models.ManyToManyField(Band) and essentially I want to use the validation capability offered by a ModelForm that already exists for Event, but I do not want to show the default Multi-Select list (for 'bands') on the page, because the potential length of the related models is extremely long. I have the following form defined: class AddEventForm(ModelForm): class Meta: model = Event fields = ('name', ) Which does what is expected for the Model, but of course, validation could care less about the 'bands' field. I've got it working enough to add bands correctly, but there's no correct validation, and it will simply drop bad band IDs. What should I do so that I can ensure that at least one (correct) band ID has been sent along with my form? For how I'm sending the band-IDs with auto-complete, see this related question: http://stackoverflow.com/questions/1528059/

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• Powershell equivilent of python's if __name__ == '__main__':

  - by Mark Mascolino

  I am really fond of python's capability to do things like this: if __name__ == '__main__': #setup testing code here #or setup a call a function with parameters and human format the output #etc... This is nice because I can treat a Python script file as something that can be called from the command line but it remains available for me to import its functions and classes into a separate python script file easily without triggering the default "run from the command line behavior". Does Powershell have a similar facility that I could exploit? And if it doesn't how should I be organizing my library of function files so that i can easily execute some of them while I am developing them?

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• MFC/WIN32: mouse hover highlight in listctrl

  - by Mordachai

  The ListView control of Windows Explorer gives a highlight to whatever item is under the mouse, without affecting the current selection. This helps enormously with relating what item a given tooltip applies to within a listview - especially in report mode. However, I am currently unable to find any APIs that would give my MFC application's CListCtrl that same behavior. Extended styles only have LVS_EX_TRACKSELECT, which actually alters the current selection (yuck!). Does anyone know how to provide a standard CListCtrl (or whatever that actually sits on top of) the mouse-hot-tracking capability? I found some articles on how to provide per cell and per row tooltip text, but its hard to tell what the tooltips relate to without something highlighting...

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• What are the performance characteristics of SignalR at scale?

  - by Joel Martinez

  I'm interested in the performance characteristics of SignalR at scale ... particularly, how it behaves at the fringes of capability. When a server is at capacity, what happens? Does it drop messages? Do some clients not get notified? Are messages queued until all are delivered? And if so, will the queue eventually overflow and crash the server? I ask because conducting such a test myself would be impractical, and I'm hoping someone could point me to documentation speaking to this ... or perhaps someone could comment that has seen how SignalR behaves at scale. Thanks! note: I'm familiar with this other stackoverflow question on the stability and scalability of SignalR. But I believe my question is asking a slightly different question in that I'm not concerned with the theoretical scaling limits, I want to know how it behaves when it reaches the limits ... so I know what to be on the lookout for.

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• Windows 7 - XP Mode - Apache

  - by Howard

  I've setup Virtual PC and XP Mode on my Windows 7 Pro. Using Apache 2.0.52 I have no problems having my website up and running on the Windows 7 machine. But Under VPC/XP Mode the best I can do is Localhost mode. What do I need to do to enable http connections? I need the XP Mode as besides the website I also run a Web BBS and a Dos based (via telnet) BBS. Some of the apps in the Dos BBS just won't work under 64 bit, no matter what setting (capability) are used. Thanks in advance...

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• Java - JPA - Generators - @SequenceGenerator

  - by Yatendra Goel

  I am learning JPA and have confusion in the @SequenceGenerator annotation. Upto my understanding, it automatically assigns a value to numeric identity fields/properties of an entity. Q1. Does this sequence generator make use of the database's increasing numeric value generating capability or generates the number on his own? Q2. If JPA uses database auto increement feauture, then will it work with datastores that don't have auto increement feature? Q3. If JPA generate numeric value on his own, then how the JPA implementation knows which value to generate next? Does it consult with the database first to see what value was stored last so as to generate the value (last + 1). ====================================================================================== Q4. Please also throw some light on sequenceName and allocationSize properties of @SequenceGenerator annotation.

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• How do I configure NetBeans to only step through Java code that I've written.

  - by blissapp

  Am I missing something? I'm delighted that all that code is there showing how the generic collections work etc. However when I want to simply walk my code I'm forever finding myself going deeper into Java's own library code than I care to. Is it possible to simply disable that when stepping code - I want to treat all of that stuff as a Black Box, code stepping is just for stuff I've written. And you know what, now I've got that capability, is it possible to wrap up my own code that way too so that I can step just the bits I'm most interested in? And if i can't easily in netbeans, is it possible in eclipse? thanks

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• iOS Question. Is There a Framework for Build Time Based Apps.

  - by dugla

  I have the need for some time based effects in the iPad app I am building. The UIView class animation capability beginAnimatins/commitAnimations is exactly the sort of thing I am looking for but it is restricted to specific properties of UIView deemed animatable. Ideally, I am looking for a solution that lets me drive an a time-based function that can perhaps send messages to a class of my own choosing at the rate I specify in the animation. Specifically, I have a function - my implementation of the RenderMan function "smoothstep" which is essentially an ease-in ease-out curve common in animation. It takes [0 - 1] as input and outputs [0 - 1] as the curve is evaluated. I want to drive this function for a duration of my own choosing at rate of my own choosing. Thanks in advance. -Doug

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• How do I bypass GUI in MFC app if command line options exist?

  - by Brandon

  I've got an existing simple MFC app that the user specifies the input file, output file, and then a "Process" button. I'd like to just add the capability so that the input/output files are command line parameters. But, if they exist, I don't want the GUI to show up. I just want the "Process" to execute. I see where I can get the command line parameters (m_lpCmdLine) but how can I bypass the displaying of the GUI? If I step into the app, it goes directly to winmain.cpp and displays the GUI without stepping into any of my code.

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• Why does my app not work on Android 2.3?

  - by user455141

  Hi all, just a quick question about Android 2.3. I've been receiving reports from people using my app that it crashes on startup in Android 2.3. It works absolutely fine on the other SDK versions as far as I can tell. Since I don't have a phone running Android 2.3 I can't test out where the error is, which makes it very frustrating to deal with! Has anyone got any ideas what might have changed in Android 2.3 to mean the app crashes? Has anyone else had a similar problem? The following are ideas I've had for what might be causing it... Splash screen - on my main activity I trigger this in onCreate and it displays for 3 secs before finishing I'm using the GPS capability of Android, has this vastly changed in 2.3 to mean that something's going wrong? There's been a fundamental change in application startup in 2.3 that I'm not aware of. Any feedback would be much appreciated!

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• How do I access the ASP.NET Configuration Tool when a site is live? This is ASP.NET MVC.

  - by Mike Marks

  I was wondering if it's possible to access the ASP.NET Configuration Tool once a site is live. To be able to create and edit users and roles is obviously very important, and from what I've been reading, once a site is deployed, the Configuration Tool is no longer accessible. If this is the case, HOW do I add users, etc.? By the way, I found a User Management plugin which brings a lot of the Configuration Tool's capabilities to the front end of a User Management section of the deployed website, but it DOES NOT offer the capability to add a new user. Help??? Thanks!!

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• What is an Enterprise Java Bean really?

  - by HDave

  On the Tomcat FAQ it says: "Tomcat is not an EJB server. Tomcat is not a full J2EE server." But if I: use Spring to supply an application context annotate my entities with JPA annotations (and use Hibernate as a JPA provider) configure C3P0 as a connection pooling data source annotate my service methods with @Transactional (and use Atomikos as JTA provider) Use JAXB for marshalling and unmarshalling and possibly add my own JNDI capability then don't I effectively have a JEE application server? And then aren't my beans EJBs? Or is there some other defining characteristic? What is it that a JEE compliant app server gives you that you can't easily/readily get from Tomcat with some 3rd party subsystems?

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• Javascript/jQuery: Varying parameters on a custom function

  - by dclowd9901

  I'm writing a plugin that will allow parameters to 'set it up.' But I predict the user won't always want to set up every aspect of the function. function This_Function(a,b,c,d); For instance, maybe they'll only want to set up a and c, but not b and d (they'll just prefer to leave those as defaults). How do I write the function (or the parameters for that matter) so that the user can customize which functions they would prefer to pass? I have a feeling it involves parsing input, but I've seen many other functions with this capability. Thanks in advance for the help.

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