Objective-C MacOS以管理員權限運行程式

標籤：xcode   objective-c   macos   

在MacOS下很多操作是需要管理員權限的， 比如我們運行chmod，在命令列下可以使用sudo chmod來申請以管理員權限運行。但是使用XCode寫的程式是不能使用sudo的。

需要自己寫代碼來申請許可權。下面是一個例子， 以管理員身份運行chmod 777

bool ChmodFileWithElevatedPrivilegesFromLocation(NSString *location){    // Create authorization reference    OSStatus status;    AuthorizationRef authorizationRef;    status = AuthorizationCreate(NULL, kAuthorizationEmptyEnvironment, kAuthorizationFlagDefaults, &authorizationRef);    if (status != errAuthorizationSuccess)    {        NSLog(@"Error Creating Initial Authorization: %d", status);        return NO;    }    AuthorizationItem right = {kAuthorizationRightExecute, 0, NULL, 0};    AuthorizationRights rights = {1, &right};    AuthorizationFlags flags = kAuthorizationFlagDefaults | kAuthorizationFlagInteractionAllowed |    kAuthorizationFlagPreAuthorize | kAuthorizationFlagExtendRights;      status = AuthorizationCopyRights(authorizationRef, &rights, NULL, flags, NULL);    if (status != errAuthorizationSuccess)    {        NSLog(@"Copy Rights Unsuccessful: %d", status);        return NO;    }        // use chmod    char *tool = "/bin/chmod";    char *args[] = {"777", (char *)[location UTF8String], NULL};    FILE *pipe = NULL;    status = AuthorizationExecuteWithPrivileges(authorizationRef, tool, kAuthorizationFlagDefaults, args, &pipe);    if (status != errAuthorizationSuccess)    {        NSLog(@"Error: %d", status);        return NO;    }        status = AuthorizationFree(authorizationRef, kAuthorizationFlagDestroyRights);    return YES;}

調用方法

bool bRet = ChmodFileWithElevatedPrivilegesFromLocation("/Library");if(bRet){    NSLog(@"error");}else{    NSLog(@"sucess");}

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Objective-C MacOS以管理員權限運行程式