source: trunk/PrefsPane/src/NetworkSettingsTool.m @ 1046

/* Copyright (C) 2008-2009 Peter Speck
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

/*
    This file implements the setuid-root helper tool.
*/

#include <stdio.h>
#include <sys/types.h>
#include <sys/sysctl.h>
#include <openssl/md5.h>
#include <SystemConfiguration/SCDynamicStoreCopySpecific.h>
#include "GBDebug.h"
#import "NetworkSettingsUpdater.h"

@interface NetworkSettingsTool : NSObject {
@private
}

- (id)init;
- (void)dealloc;

@end

@implementation NetworkSettingsTool

- (id)init
{
    if (!(self = [super init]))
        return nil;
    return self;
}

- (void)dealloc
{
    [super dealloc];
}

- (void)exitWithError:(NSString*)msg
{
    NSLog(@"NetworkSettingsTool failed: %@", msg);
    exit(1);
}

- (void)runWithArgs:(NSArray*)args
{
    if (geteuid()) {
        [self exitWithError:[NSString stringWithFormat:@"Not running as root but with uid = %d and euid = %d",
                             getuid(), geteuid()]];
    }
    if (getuid()) {
        if (setuid(0) < 0)
            NSLog(@"Failed setting uid to 0");
        if (getuid()) {
            [self exitWithError:[NSString stringWithFormat:@"Failed to set uid to 0, is still %d, euid = %d",
                                 getuid(), geteuid()]];
        }
    }
    if ([args count] < 2)
        [self exitWithError:@"No arguments given"];
    int port = [[args objectAtIndex:1] intValue];
    NSLog(@"port = %d", port);
    NetworkSettingsUpdater* updater = [[[NetworkSettingsUpdater alloc]
                                        initWithProxyPort:port
                                        withWantEnable:YES] autorelease];
    [updater updateSettingsWithCommit:YES];
    NSLog(@"Network settings synchronized.");
    exit(0);
}

@end

int main (int argc, const char * argv[])
{
    NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
    NSArray *args = [[NSProcessInfo processInfo] arguments];
    NetworkSettingsTool* tool = [[[NetworkSettingsTool alloc] init] retain];
    @try {
        [tool runWithArgs:args];
    }
    @catch (NSException* ex) {
        NSLog(@"Stops due to exception: '%@' / '%@'", [ex name], [ex reason]);
        exit(1);
    }
    [tool release];
    [pool release];
    return 0;
}