ZGProcess.m

/*
 * Created by Mayur Pawashe on 10/28/09.
 *
 * Copyright (c) 2012 zgcoder
 * All rights reserved.
 *
 * 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 project's author nor the names of its
 * 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 THE COPYRIGHT
 * HOLDER OR CONTRIBUTORS 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 "ZGProcess.h"
#import "ZGVirtualMemory.h"

@implementation ZGProcess

+ (void)pauseOrUnpauseProcessTask:(ZGMemoryMap)processTask
{
	integer_t suspendCount;
	if (ZGSuspendCount(processTask, &suspendCount))
	{
		if (suspendCount > 0)
		{
			ZGResumeTask(processTask);
		}
		else
		{
			ZGSuspendTask(processTask);
		}
	}
}

- (id)initWithName:(NSString *)processName processID:(pid_t)aProcessID set64Bit:(BOOL)flag64Bit
{
	if ((self = [super init]))
	{
		self.name = processName;
		self.processID = aProcessID;
		self.is64Bit = flag64Bit;
	}
	
	return self;
}

- (id)initWithName:(NSString *)processName set64Bit:(BOOL)flag64Bit
{
	return [self initWithName:processName processID:NON_EXISTENT_PID_NUMBER set64Bit:flag64Bit];
}

- (BOOL)valid
{
	return self.processID != NON_EXISTENT_PID_NUMBER;
}

- (void)markInvalid
{
	self.processID = NON_EXISTENT_PID_NUMBER;
	self.processTask = MACH_PORT_NULL;
}

- (BOOL)grantUsAccess
{	
	return ZGGetTaskForProcess(self.processID, &_processTask);
}

- (BOOL)hasGrantedAccess
{
    return MACH_PORT_VALID(self.processTask);
}

- (ZGMemorySize)pointerSize
{
	return self.is64Bit ? sizeof(int64_t) : sizeof(int32_t);
}

@end