目前我所知道的,在cocoa中得到root權限的方法有3種:shell
1. 經過AuthorizationCopyRights函數app
2. 在UI上添加一個鎖的樣子的控件,而後經過開關這個鎖來獲取root權限函數
3. 直接調用Applescript來以root權限執行腳本ui
其中方法1和2通常用來執行一個shell腳本或者一個可執行文件,方法3則直接執行一個applescript腳本。spa
固然方法1和2也能夠執行一個保存的applescript腳本,方法3也能夠用applescript腳原本執行shell或可執行文件。code
這種方法的缺陷是每次須要root權限都要執行一次,或者必須在程序開啓的時候獲取root權限。orm
請看下面的代碼:blog
OSStatus status; AuthorizationRef authRef; status = AuthorizationCreate(NULL, kAuthorizationEmptyEnvironment, kAuthorizationFlagDefaults, &authRef); AuthorizationRights authRights; AuthorizationItem authItems[1]; authItems[0].name = kAuthorizationRightExecute; authRights.count = sizeof(authItems) / sizeof(authItems[0]); authRights.items = authItems; AuthorizationFlags authFlags = kAuthorizationFlagDefaults | kAuthorizationFlagExtendRights | kAuthorizationFlagInteractionAllowed; status = AuthorizationCopyRights(authRef, &authRights, kAuthorizationEmptyEnvironment, authFlags, NULL); if(status != errAuthorizationSuccess) { NSLog(@"Copy rights unsuccessful: %d",status); }
.......... //中間省略 status = AuthorizationExecuteWithPrivileges(authRef, 可執行文件的路徑, kAuthorizationFlagDefaults, 可執行文件須要的參數, nil); if (status != errAuthorizationSuccess) { NSLog(@"Error: %d", status); }
這個方法比較靈活,打開鎖以後任何須要root權限的地方均可以直接用了,是我最推薦的一個方法ip
1. 首先給本身的項目添加兩個framework。Build phrase -> Link Binary With Libraries 添加Security.framework 和 SecurityInterface.framework.string
2. 在UI上拖拽進去一個Custom view控件,而後把它的Custom class設爲SFAuthorizationView
3. 在AppDelegate.h中添加代碼以下:
........... #import <SecurityInterface/SFAuthorizationView.h> #import <SystemConfiguration/SystemConfiguration.h> @interface AppDelegate : NSObject <NSApplicationDelegate> { ............ IBOutlet SFAuthorizationView *authView; ............ } -(BOOL)isUnlocked;
添加兩個頭文件,並把custom view跟一個SFAuthorizationView 變量關聯起來。
4. 在AppDelegate.m中添加以下代碼:
- (void)applicationDidFinishLaunching:(NSNotification *)aNotification { // Insert code here to initialize your application AuthorizationItem items = {kAuthorizationRightExecute,0,NULL,0}; AuthorizationRights rights = {1,&items}; [authView setAuthorizationRights:&rights]; authView.delegate =self; [authView updateStatus:nil]; } -(BOOL)isUnlocked { return [authView authorizationState] == SFAuthorizationViewUnlockedState; } -(void)authorizationViewDidAuthorize:(SFAuthorizationView *)view { } -(void)authorizationViewDidDeauthorize:(SFAuthorizationView *)view { } -(void)doSomething { ............. OSErr processErr = AuthorizationExecuteWithPrivileges([[authView authorization] authorizationRef], [binaryPath UTF8String], kAuthorizationFlagDefaults, (char* const*)args, nil); if (processErr != errAuthorizationSuccess) { NSLog(@"Error: %d", processErr); } ............. }
applicationDidFinishLaunching 首先在程序啓動的時候初始化authView
isUnlocked 判斷那個鎖是否鎖住
authorizationViewDidAuthorize 和 authorizationViewDidDeauthorize 分別在鎖被打開和被鎖住的時候觸發,你能夠作你本身想作的事情,好比把按鈕變灰之類的
doSomething 就能夠利用authView authorization 來受權AuthorizationExecuteWithPrivileges進行root權限的操做了
可參考http://bdunagan.com/2009/12/13/system-preferences-pane-lock/
NSDictionary *errorInfo = [NSDictionary new]; NSString *script = [NSString stringWithFormat:@"do shell script \"%@\" with administrator privileges", fullScript]; NSAppleScript *appleScript = [[NSAppleScript new] initWithSource:script]; NSAppleEventDescriptor * eventResult = [appleScript executeAndReturnError:&errorInfo]; // Check errorInfo if (! eventResult) { // do something you want }