/*
    STPrivilegedTask - NSTask-like wrapper around AuthorizationExecuteWithPrivileges
    Copyright (C) 2008-2020 Sveinbjorn Thordarson <sveinbjorn@sveinbjorn.org>
    
    BSD License
    Redistribution and use in source and binary forms, with or without
    modification, are permitted provided that the following conditions are met:
        * Redistributions of source code must retain the above copyright
        notice, this list of conditions and the following disclaimer.
        * Redistributions in binary form must reproduce the above copyright
        notice, this list of conditions and the following disclaimer in the
        documentation and/or other materials provided with the distribution.
        * Neither the name of the copyright holder nor that of any other
        contributors may be used to endorse or promote products
        derived from this software without specific prior written permission.
    
    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
    ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
    WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
    DISCLAIMED. IN NO EVENT SHALL  BE LIABLE FOR ANY
    DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
    (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
    LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
    ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
    (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
    SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#import <Cocoa/Cocoa.h>

#define STPrivilegedTaskDidTerminateNotification @"STPrivilegedTaskDidTerminateNotification"

// Defines error value for when AuthorizationExecuteWithPrivileges no longer exists
// Rather than defining a new enum, we just create a global constant
extern const OSStatus errAuthorizationFnNoLongerExists;

@interface STPrivilegedTask : NSObject

@property (copy) NSArray *arguments;
@property (copy) NSString *currentDirectoryPath;
@property (copy) NSString *launchPath;

@property (readonly) NSFileHandle *outputFileHandle;
@property (readonly) BOOL isRunning;
@property (readonly) pid_t processIdentifier;
@property (readonly) int terminationStatus;

@property (copy) void (^terminationHandler)(STPrivilegedTask *);

+ (BOOL)authorizationFunctionAvailable;
    
- (instancetype)initWithLaunchPath:(NSString *)path;
- (instancetype)initWithLaunchPath:(NSString *)path arguments:(NSArray *)args;
- (instancetype)initWithLaunchPath:(NSString *)path arguments:(NSArray *)args currentDirectory:(NSString *)cwd;

+ (STPrivilegedTask *)launchedPrivilegedTaskWithLaunchPath:(NSString *)path;
+ (STPrivilegedTask *)launchedPrivilegedTaskWithLaunchPath:(NSString *)path arguments:(NSArray *)args;
+ (STPrivilegedTask *)launchedPrivilegedTaskWithLaunchPath:(NSString *)path arguments:(NSArray *)args currentDirectory:(NSString *)cwd;
+ (STPrivilegedTask *)launchedPrivilegedTaskWithLaunchPath:(NSString *)path arguments:(NSArray *)args currentDirectory:(NSString *)cwd authorization:(AuthorizationRef)authorization;

- (OSStatus)launch;
- (OSStatus)launchWithAuthorization:(AuthorizationRef)authorization;
- (void)terminate; // doesn't work
- (void)waitUntilExit;

@end

