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main.c
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main.c
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/*
* Copyright 2008 Julien Ponge. All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <stdlib.h>
#include <Security/Authorization.h>
#include <Security/AuthorizationTags.h>
/*
* Launches an executable as root on MacOS X.
*
* The executable and arguments must be provided on the command line.
*
* This code is heavily inspired from the example at
* http://developer.apple.com/documentation/Security/Conceptual/authorization_concepts/03authtasks/chapter_3_section_4.html
*
*/
int main(int argc, const char** argv)
{
// Check that we have enough arguments
if (argc < 3)
{
return -1;
}
// Grab an authorization reference
OSStatus status;
AuthorizationFlags flags = kAuthorizationFlagDefaults;
AuthorizationRef authRef;
status = AuthorizationCreate(NULL, kAuthorizationEmptyEnvironment, flags, &authRef);
if (status != errAuthorizationSuccess)
{
return status;
}
// Set up the authorization rights
AuthorizationItem authItems = { kAuthorizationRightExecute, 0, NULL, 0 };
AuthorizationRights authRights = { 1, &authItems };
flags = kAuthorizationFlagDefaults |
kAuthorizationFlagInteractionAllowed |
kAuthorizationFlagPreAuthorize |
kAuthorizationFlagExtendRights;
status = AuthorizationCopyRights(authRef, &authRights, NULL, flags, NULL);
if (status != errAuthorizationSuccess)
{
return status;
}
// Prepare the executable + arguments, from the command-line arguments
int i;
const char* executable = argv[1];
char** arguments = (char**) malloc(sizeof(char*) * (argc - 1));
for (i = 0; i < (argc - 2); ++i)
{
arguments[i] = (char*) argv[i + 2];
}
arguments[argc - 2] = NULL;
// Run!
flags = kAuthorizationFlagDefaults;
status = AuthorizationExecuteWithPrivileges(authRef, executable, flags,
arguments, NULL);
if (status != errAuthorizationSuccess)
{
return status;
}
// Cleanup
AuthorizationFree(authRef, kAuthorizationFlagDefaults);
return 0;
}