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  • XSS to change ASP.NET session state

    - by Juri Bogdanov
    Hello! I am developing the application that stores current user and user's role to session state (System.Web.SessionState.HttpSessionState Page.Session). if (Session["username"] == null) Session.Add("username", User.Identity.Name); if (Session["isAdministrator"] == null) Session.Add("isAdministrator", User.IsInRole(domain + "\\Domain Admins")); After I check these session states in code behind for granting permissions to some excecution: if ((bool)Session["isAdministrator"] || computer.Administrators.Contains(Session["username"].ToString())) My question is next: how safe that mechanism is? Is it possible to change the session states using some JavaScript for example or some how else? Thanks :)

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  • multimap erase doesnt work

    - by nikiforzx6r
    following code doensnt work with input: 2 7 add Elly 0888424242 add Elly 0883666666 queryname Elly querynum 0883266642 querynum 0888424242 delnum 0883666666 queryname Elly 3 add Kriss 42 add Elly 42 querynum 42 Why my erase doesnt work? #include<stdio.h> #include<iostream> #include<map> #include <string> using namespace std; void PrintMapName(multimap<string, string> pN, string s) { pair<multimap<string,string>::iterator, multimap<string,string>::iterator> ii; multimap<string, string>::iterator it; ii = pN.equal_range(s); multimap<string, int> tmp; for(it = ii.first; it != ii.second; ++it) { tmp.insert(pair<string,int>(it->second,1)); } multimap<string, int>::iterator i; bool flag = false; for(i = tmp.begin(); i != tmp.end(); i++) { if(flag) { cout<<" "; } cout<<i->first; if(flag) { cout<<" "; } flag = true; } cout<<endl; } void PrintMapNumber(multimap<string, string> pN, string s) { multimap<string, string>::iterator it; multimap<string, int> tmp; for(it = pN.begin(); it != pN.end(); it++ ) { if(it->second == s) { tmp.insert(pair<string,int>(it->first,1)); } } multimap<string, int>::iterator i; bool flag = false; for(i = tmp.begin(); i != tmp.end(); i++) { if(flag) { cout<<" "; } cout<<i->first; if(flag) { cout<<" "; } flag = true; } cout<<endl; } void PrintFull(multimap<string, string> pN) { multimap<string, string>::iterator it; for(it = pN.begin(); it != pN.end(); it++ ) { cout<<"Key = "<<it->first<<" Value = "<<it->second<<endl; } } int main() { multimap<string, string> phoneNums; int N; cin>>N; int tests; string tmp, tmp1,tmp2; while(N > 0) { cin>>tests; while(tests > 0) { cin>>tmp; if(tmp == "add") { cin>>tmp1>>tmp2; phoneNums.insert(pair<string,string>(tmp1,tmp2)); } else { if(tmp == "delnum") { /////////////////////////////////////////HEREEEEEEE multimap<string, string>::iterator it; multimap<string, string>::iterator tmpr; for(it = phoneNums.begin(); it != phoneNums.end();) { tmpr = it; if(it->second == tmp1) { ++tmpr; if(tmpr == phoneNums.end()) { phoneNums.erase(it,tmpr); break; } else { phoneNums.erase(it,tmpr); } } } } else { if(tmp == "delname") { cin>>tmp1; phoneNums.erase(tmp1); } else { if(tmp =="queryname") { cin>>tmp1; PrintMapName(phoneNums, tmp1); } else//querynum { cin>>tmp1; PrintMapNumber(phoneNums, tmp1); } } } } tests--; } N--; } return 0; }

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  • Guaranteed COM object release?

    - by Jurily
    I wrote the following code under the assumption that Excel will die with Monkey: class ExcelMonkey { private static Excel.Application xl = new Excel.Application(); public static bool parse(string filename) { if (filename.Contains("foo")) { var workbook = xl.Workbooks.Open(filename); var sheet = workbook.Worksheets.get_Item(1); // do stuff return true; } return false; } } How do I make sure it does? Do I need to release workbook and sheet separately? I want to have Excel around for the lifetime of the program, it's a huge performance improvement.

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  • iPhone TabBar selection cancelling

    - by Chris Schnyder
    I am developing an iPhone app that displays several views, all acessed via Tab Bar items. However I need to add an additional item to the Tab Bar that simply launches a URL in Safari. I've accomplished this by adding an empty placeholder view to the TabBar and returning FALSE from shouldSelectViewController when the this view's tabBarItem is clicked on, and launching Safari at the same time. That code is: - (BOOL)tabBarController:(UITabBarController *)tabBarController shouldSelectViewController:(UIViewController *)viewController { if([[viewController tabBarItem] title] == "Website"){ //... launch Safari return FALSE; } else { return TRUE; } } PROBLEM: If the TabBar has too many items, and this "Safari Launch" tab is pushed off to the "More" navigation controller, I lose the capability to intercept the event and prevent the view from loading when clicked. Any suggested tips?

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  • FreeLibrary vs implicit unloading DLL

    - by Adil
    I have implemented a DLL including DllMain() entry function:- BOOL APIENTRY DllMain( HMODULE hModule, DWORD ul_reason_for_call, LPVOID lpReserved ) { case DLL_PROCESS_ATTACH: ... case DLL_THREAD_ATTACH: ... case DLL_THREAD_DETACH: ... case DLL_PROCESS_DETACH: ... } Unfortunately i made a mistake in DLL_PROCESS_DETACH case and accessing illegal memorey (access violation). I made a sample program which loads the library using LoadLibrary() function, uses the library function and finally call FreeLibrary() and return. When i executed this program, i didnt get any error message. But if i remove FreeLibrary(), in that case the DLL_PROCESS_DETACH case is executed implicitly and this time it gives error dialog box mentioning that there is access violation. Why calling FreeLibrary() suppress this error? OR internally it handles this exception? What is suggested way.

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  • iPad launch orientation

    - by Brian
    After reading many posts, I still haven't got a clue how to solve this problem... The first view of my app is a tableViewController. I override (BOOL) shouldAutorotateToInterfaceOrientation: (UIInterfaceOrientation)interfaceOrientation and it always returns YES. If I hold my iPad upright under landscape orientation, it rotates right after I launch the app. However, if I put my iPad flat on the table, even though my homepage is in landscape orientation, it launches in protrait orientation. So I guess the problem is, how can I get the orientation of my homepage and launch my app with that orientation?

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  • Retrieve the CAKeyframeAnimationKey's key in AnimationDidStop

    - by JacktheSparrow
    I have multiple CAKeyframeAnimation objects, each with a unique key like the following: ..... [myAnimation setValues:images]; [myAnimation setDuration:1]; .... [myLayer addAnimation:myAnimation forKey:@"unique key"]; My question is, if I have multiple animation like this and each with a unique key, how do I retrieve their keys in the method AnimationDidStop? I want to be able to do something like this: -(void)animationDidStop:(CAAnimation*)animation finished:(BOOL)flag{ if(..... ==@"uniquekey1"){ //code to handle this specific animation here: }else if(.... ==@"uiquekey2"){ //code to handle this specific animation here: } }

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  • How do i supress keypress being printed to console in .NET?

    - by cbsch
    Hello, I'm porting a small C++ console game to C# and it seems that I can't stop key presses from being printed to the console. In C++ I get the keystroke with this method, which also suppress the keystrokes from being printed to the console: bool Game::getInput(char *c) { if (_kbhit()) { *c = _getch(); return true; } return false; } I tried to do the equivalent in C# by doing: Key = Console.ReadKey(); But this does not suppress the character from being printed to the console, causing obvious problems. Any ideas on how to remedy this?

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  • Problem with operator ==

    - by CPPDev
    I am facing some problem with use of operator == in the following c++ program. #include < iostream> using namespace std; class A { public: A(char *b) { a = b; } A(A &c) { a = c.a; } bool operator ==(A &other) { return strcmp(a, other.a); } private: char *a; }; int main() { A obj("test"); A obj1("test1"); if(obj1 == A("test1")) { cout<<"This is true"<<endl; } } What's wrong with if(obj1 == A("test1")) line ?? Any help is appreciated.

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  • Why is the base() constructor not necessary?

    - by Earlz
    Hello, I have a class structure like abstract class Animal { public Animal(){ //init stuff.. } } class Cat : Animal { public Cat(bool is_keyboard) : base() //NOTE here { //other init stuff } } Now then, look at the noted line. If you remove : base() then it will compile without an error. Why is this? Is there a way to disable this behavior? I have had multiple bugs now from forgetting the base() which I would have thought to be required on such a special thing as a constructor.

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  • Fast rectangle to rectangle intersection

    - by Jeremy Rudd
    What's a fast way to test if 2 rectangles are intersecting? A search on the internet came up with this one-liner (WOOT!), but I don't understand how to write it in Javascript, it seems to be written in an ancient form of C++. struct { LONG left; LONG top; LONG right; LONG bottom; } RECT; bool IntersectRect(const RECT * r1, const RECT * r2) { return ! ( r2->left > r1->right || r2->right left || r2->top > r1->bottom || r2->bottom top ); }

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  • Lack of IsNumeric function in C#

    - by Michael Kniskern
    One thing that has bothered me about C# since its release was the lack of a generic IsNumeric function. I know it is difficult to generate a one-stop solution to detrmine if a value is numeric. I have used the following solution in the past, but it is not the best practice because I am generating an exception to determine if the value is IsNumeric: public bool IsNumeric(string input) { try { int.Parse(input); return true; } catch { return false; } } Is this still the best way to approach this problem or is there a more efficient way to determine if a value is numeric in C#?

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  • Unreachable code detected by using const variables

    - by Anton Roth
    I have following code: private const FlyCapture2Managed.PixelFormat f7PF = FlyCapture2Managed.PixelFormat.PixelFormatMono16; public PGRCamera(ExamForm input, bool red, int flags, int drawWidth, int drawHeight) { if (f7PF == FlyCapture2Managed.PixelFormat.PixelFormatMono8) { bpp = 8; // unreachable warning } else if (f7PF == FlyCapture2Managed.PixelFormat.PixelFormatMono16){ bpp = 16; } else { MessageBox.Show("Camera misconfigured"); // unreachable warning } } I understand that this code is unreachable, but I don't want that message to appear, since it's a configuration on compilation which just needs a change in the constant to test different settings, and the bits per pixel (bpp) change depending on the pixel format. Is there a good way to have just one variable being constant, deriving the other from it, but not resulting in an unreachable code warning? Note that I need both values, on start of the camera it needs to be configured to the proper Pixel Format, and my image understanding code needs to know how many bits the image is in. So, is there a good workaround, or do I just live with this warning?

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  • Setting the initial value of a property when using DataContractSerializer

    - by Eric
    If I am serializing and later deserializing a class using DataContractSerializer how can I control the initial values of properties that were not serialized? Consider the Person class below. Its data contract is set to serialize the FirstName and LastName properties but not the IsNew property. I want IsNew to initialize to TRUE whether a new Person is being instantiate as a new instance or being deserialized from a file. This is easy to do through the constructor, but as I understand it DataContractSerializer does not call the constructor as they could require parameters. [DataContract(Name="Person")] public class Person { [DataMember(Name="FirstName")] public string FirstName { get; set; } [DataMember(Name = "LastName")] public string LastName { get; set; } public bool IsNew { get; set; } public Person(string first, string last) { this.FirstName = first; this.LastName = last; this.IsNew = true; } }

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  • string extension method - Not available through WebMethod

    - by Peter Bridger
    I've written a simple extension method for a web project, it sits in a class file called StringExtensions.cs which contains the following code: using System; using System.Collections.Generic; using System.Linq; using System.Web; /// <summary> /// Useful extensions for string /// </summary> static class StringExtensions { /// <summary> /// Is string empty /// </summary> /// <param name="value"></param> /// <returns></returns> public static bool IsEmpty(this string value) { return value.Trim().Length == 0; } } I can access this extension method from all the classes I have within the App_Code directory. However I have a web page called JSON.aspx that contains a series of [WebMethods] - within these I cannot see the extension method - I must be missing something very obvious!

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  • (type theoretical) How is ([] ==) [] typed in haskell?

    - by Ingo
    It sounds silly, but I can't get it. Why can the expression [] == [] be typed at all? More specifically, which type (in class Eq) is inferred to the type of list elements? In a ghci session, I see the following: Prelude> :t (==[]) (==[]) :: (Eq [a]) => [a] -> Bool But the constraint Eq [a] implies Eq a also, as is shown here: Prelude> (==[]) ([]::[IO ()]) <interactive>:1:1: No instance for (Eq (IO ())) arising from use of `==' at <interactive>:1:1-2 Probable fix: add an instance declaration for (Eq (IO ())) In the definition of `it': it = (== []) ([] :: [IO ()]) Thus, in []==[], the type checker must assume that the list element is some type a that is in class Eq. But which one? The type of [] is just [a], and this is certainly more general than Eq a = [a].

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  • Nullables? Detecting them

    - by Aren B
    Ok, im still a bit new to using nullable types. I'm writing a reflecting object walker for a project of mine, im getting to the point where im setting the value of a reflected property with the value i've retrieved from a reflected property. The value i've retrieved is still in object form, and it dawned on me, since i want my object walker to return null when it can't find something, (I thought about throwing an exception, but i want this to soft-fail when something's wrong). Anyway, some of the values im setting/getting are decimal bool etc... so it dawned on me that i should just NOT set a non-nullable value, but I realized I straight up don't know how to tell decimal from decimal? Is it enough to key on if the Type of the property im setting is inherited from ValueType?

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  • what is the mistake in my code

    - by Solitaire
    class myslot { public: Q_OBJECT myslot() { } ~myslot() { } typedef enum Emycars{volvo,benz,tata}cars; public slots: void hellowslot(myslot::cars); }; void myslot::hellowslot(myslot::cars cars1) { } class mysignal { public: Q_OBJECT public: mysignal(myslot *ourslot) { bool val = QObject::connect(this,SIGNAL(hellowsignal(myslot::Emycars)),ourslot,SLOT(hellowslot(myslot::Emycars))); } ~mysignal() { } signals: void hellowsignal(myslot::Emycars); }; int main(int argc, char *argv[]) { QApplication a(argc, argv); myslot slot; mysignal sig(&slot); // DeleteNow w; // w.showMaximized(); return a.exec(); } what is the mistake in mycode, the way which i have written connect for the function which recive enum is right or not? please let me know where i am wrong.

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  • Cocoa Core Data - Efficient Related Entities Counts

    - by Gary
    I am working on my first iPhone application and I've hit a wall. I'm trying to develop a 'statistics' page for a three entity relationship. My entities are the following: Department - Name, Address, Building, etc. People - Name, Gender (BOOL), Phone, etc If I have fetched a specific department how do I filter those results and only return people that are Male (Gender == 0)? If I do NSLog(@"%d", [department.people count]); I get the correct number of people in that department so I know I'm in the neighborhood. I know I could re-fetch and modify the predicate each time but with 20+ stats in my app that seems inefficient. Thanks for any advice!

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  • NHibernate: uninitialized proxy passed to save() and cascade

    - by jonnii
    Hi, I keep getting an NHibernate.PersistentObjectException when calling session.Save() which is due to an uninitialized proxy passed to save(). If I fiddle with my cascade settings I can make it go away, but then child objects aren't being saved. The only other fix I have found is by adding the following to my DefaultSaveEventListener. protected override bool ReassociateIfUninitializedProxy(object obj, global::NHibernate.Engine.ISessionImplementor source) { if (!NHibernateUtil.IsInitialized(obj)) NHibernateUtil.Initialize(obj); return base.ReassociateIfUninitializedProxy(obj, source); } This is obviously not an ideal solution. Any ideas?

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  • Qt - A login dialog

    - by Narek
    I want to create a login dialog by inheriting QDialog. I put in subclass named LoginDialog 2 QLineEdits: for login for password. I want to be able to warn the user with a message if the caps lock is ON while he will start to fill passwordLineEdit. Suppose I have a function that tells the current state of CapsLock button. So I want to do eventFiltering in LoginDialog class in order to understand that user starts to fill the password field (i.e. user just stepped into the password field) So for that purpose I wrote the following in the LoginDialog class constructor: m_passwordLineEdit->installEventFilter(this); So the only thing is to do is to implement a function which can understand that user is going to fill the password. Seems is should be done with the following function(??): bool LoginDialog::eventFilter(QObject *target, QEvent *event) { if (target == m_passwordLineEdit) { } return QDialog::eventFilter(target, event); } How to implement this function???

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  • UIVIewController wrong position before rotate

    - by zegnus
    I have the starter point of my application this window (white background): - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { mainScreen = [[MainScreenController alloc] initWithNibName:@"MainScreenController" bundle:[NSBundle mainBundle]]; // add it to the main window [window addSubview:[mainScreen view]]; // show view [window makeKeyAndVisible]; NSLog(@"started"); return YES; } And MainScreenController is an UIViewController with (blackBackground) created by the Interface Builder. The application executes perfectly but the first time, the black view is moved up like the height of the status iphone pannel (leaving white rectangle at the bottom). If I rotate the iPhone twice, the view is perfectly positioned in the right place, filling all the screen with the black background. Any idea? Thanks!

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  • How to dynamically replace a method implementation in ObjC2?

    - by Abhi
    I am trying to learn how to write plugins using SIMBL. I got my plugin to load with the target application, and also know the method that I wish to override. However, I am not able to use class_getInstanceMethod correctly based on snippets on the Internet. Have things changed in OSX 10.6 and/or ObjC2? The following code from culater.net gives "Dereferencing pointer to incomplete type" on the second-last statement: BOOL DTRenameSelector(Class _class, SEL _oldSelector, SEL _newSelector) { Method method = nil; // First, look for the methods method = class_getInstanceMethod(_class, _oldSelector); if (method == nil) return NO; method->method_name = _newSelector; return YES; } Is there a complete example of how to override a method using SIMBL plugins? Thanks!

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  • How do I improve the efficiency of the queries executed by this generic Linq-to-SQL data access clas

    - by Lee D
    Hi all, I have a class which provides generic access to LINQ to SQL entities, for example: class LinqProvider<T> //where T is a L2S entity class { DataContext context; public virtual IEnumerable<T> GetAll() { return context.GetTable<T>(); } public virtual T Single(Func<T, bool> condition) { return context.GetTable<T>().SingleOrDefault(condition); } } From the front end, both of these methods appear to work as you would expect. However, when I run a trace in SQL profiler, the Single method is executing what amounts to a SELECT * FROM [Table], and then returning the single entity that meets the given condition. Obviously this is inefficient, and is being caused by GetTable() returning all rows. My question is, how do I get the query executed by the Single() method to take the form SELECT * FROM [Table] WHERE [condition], rather than selecting all rows then filtering out all but one? Is it possible in this context? Any help appreciated, Lee

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  • Two UITabBarControllers and Autorotation

    - by optimisticmonkey
    I have two UITabBarControllers in my mainwnidow.nib wired to my appdelegate. In my app delegate, I can load either one: - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { //either [window addSubview:tabBarController.view]; //or [window addSubview:tabBar2Controller.view]; [window makeKeyAndVisible]; } and autorotation works. If I add both (with the expectation to swap between them later): [window addSubview:tabBarController.view]; [window addSubview:tabBar2Controller.view]; then autorotation stops working...everything is always portrait. Thanks in advance for any tips...

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