I am in a admin account when testing the issue.
Ive created a User Interface to add a print queue using lpadmin. In my User
Interface,
i set my authorization not as admin. before my lpa
dmin was called, an authentication dialog asking for user name and password
appears which is expected since i set my authorization to 0. When i click
"Cancel" in the authentication dialog, i raised my
NSBeginCriticalAlertSheet stating "queue not added". When clicking "OK" button
from my NSBeginCriticalAlertSheet, my application quits.
here is the crash log:
Exception: EXC_BAD_ACCESS (0x0001)
Codes: KERN_INVALID_ADDRESS (0x0001) at 0x00633000
Thread 0 Crashed:
0 com.apple.Foundation 0x92bdfdc0 _NSAddExceptionHandlerForLock + 332
1 com.apple.AppKit 0x937caec4 -[NSViewHierarchyLock
lockForReadingWithExceptionHandler:] + 368
2 com.apple.AppKit 0x937d02a0 -[NSView displayIfNeeded] + 80
3 com.apple.AppKit 0x93856f34 -[NSControl mouseDown:] + 184
4 com.apple.AppKit 0x937f8890 -[NSWindow sendEvent:] + 4616
5 com.apple.AppKit 0x937a18d4 -[NSApplication sendEvent:] +
4172
6 com.apple.AppKit 0x93798d10 -[NSApplication run] + 508
7 com.apple.AppKit 0x9388987c NSApplicationMain + 452
here are my snippet codes:
-(BOOL) createQueue : (AuthorizationRef) authRef
{
//launch authentication dialog.
}
- (void)errorSheet:(NSNotification*)aNotification
{
//raise error dialog
NSBeginCriticalAlertSheet(@"failed", button1, button2, button3,
nil,self,nil, @selector (sheetDidEnd:returnCode:contextInfo:),nil,@"queue not
added");
}
-(void)sheetDidEnd:(NSWindow *)sheet returnCode:(int)returnCode
contextInfo:(void *)contextInfo
{
//recover error from errorSheet
[[NSNotificationCenter defaultCenter] postNotification:[NSNotification
notificationWithName:@"recoverfromfail" object:nil userInfo:
[NSDictionary dictionaryWithObjectsAndKeys:[NSNumber
numberWithBool:(returnCode==NSAlertDefaultReturn)?YES:NO],@"recover",nil]]];
}
+ (BOOL)runAsAdmin
{
AuthorizationRights rightSet = { 0, &right
};/*----------------------------------- intentionally set to 0 so that i will
prompt an authenticaion
dialog---------------------------------------*/
}
Static AuthorizationRef authRef = NULL;
+(AuthorizationRef)authRef
{
return authRef;
}
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