//     File: main.c

// Abstract: main source code to HID Dumper

//  Version: 2.0

// 

// Disclaimer: IMPORTANT:  This Apple software is supplied to you by Apple

// Inc. ("Apple") in consideration of your agreement to the following

// terms, and your use, installation, modification or redistribution of

// this Apple software constitutes acceptance of these terms.  If you do

// not agree with these terms, please do not use, install, modify or

// redistribute this Apple software.

// 

// In consideration of your agreement to abide by the following terms, and

// subject to these terms, Apple grants you a personal, non-exclusive

// license, under Apple's copyrights in this original Apple software (the

// "Apple Software"), to use, reproduce, modify and redistribute the Apple

// Software, with or without modifications, in source and/or binary forms;

// provided that if you redistribute the Apple Software in its entirety and

// without modifications, you must retain this notice and the following

// text and disclaimers in all such redistributions of the Apple Software.

// Neither the name, trademarks, service marks or logos of Apple Inc. may

// be used to endorse or promote products derived from the Apple Software

// without specific prior written permission from Apple.  Except as

// expressly stated in this notice, no other rights or licenses, express or

// implied, are granted by Apple herein, including but not limited to any

// patent rights that may be infringed by your derivative works or by other

// works in which the Apple Software may be incorporated.

// 

// The Apple Software is provided by Apple on an "AS IS" basis.  APPLE

// MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION

// THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS

// FOR A PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND

// OPERATION ALONE OR IN COMBINATION WITH YOUR PRODUCTS.

// 

// IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL

// OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF

// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS

// INTERRUPTION) ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION,

// MODIFICATION AND/OR DISTRIBUTION OF THE APPLE SOFTWARE, HOWEVER CAUSED

// AND WHETHER UNDER THEORY OF CONTRACT, TORT (INCLUDING NEGLIGENCE),

// STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN ADVISED OF THE

// POSSIBILITY OF SUCH DAMAGE.

// 

// Copyright (C) 2013 Apple Inc. All Rights Reserved.

// 

// ****************************************************

#pragma mark -

#pragma mark * complation directives *

// ----------------------------------------------------

// ****************************************************

#pragma mark -

#pragma mark * includes & imports *

// ----------------------------------------------------

#include <CoreFoundation/CoreFoundation.h>

#include "HID_Utilities_External.h"

// ****************************************************

#pragma mark - typedef's, struct's, enums, defines, etc. *

// ----------------------------------------------------

// ****************************************************

#pragma mark - local (static) function implementations

// ----------------------------------------------------

// ****************************************************

#pragma mark - global (external) function implementations

// ----------------------------------------------------

int main(int            argc,

         const char *   argv[]) {

#pragma unused ( argc, argv )

    IOHIDManagerRef tIOHIDManagerRef = NULL;

    CFSetRef deviceCFSetRef = NULL;

    IOHIDDeviceRef *tIOHIDDeviceRefs = nil;

    do {

        tIOHIDManagerRef = IOHIDManagerCreate(kCFAllocatorDefault,

                                              kIOHIDOptionsTypeNone);

        if (!tIOHIDManagerRef) {

            break;

        }

        IOHIDManagerSetDeviceMatching(tIOHIDManagerRef,

                                      NULL);

        IOReturn tIOReturn = IOHIDManagerOpen(tIOHIDManagerRef,

                                              kIOHIDOptionsTypeNone);

        if (noErr != tIOReturn) {

            break;

        }

        deviceCFSetRef = IOHIDManagerCopyDevices(tIOHIDManagerRef);

        if (!deviceCFSetRef) {

            break;

        }

        CFIndex deviceIndex,

                deviceCount = CFSetGetCount(deviceCFSetRef);

        tIOHIDDeviceRefs = malloc(sizeof(IOHIDDeviceRef) *

                                  deviceCount);

        if (!tIOHIDDeviceRefs) {

            break;

        }

        CFSetGetValues(deviceCFSetRef,

                       (const void **)tIOHIDDeviceRefs);

        CFRelease(deviceCFSetRef);

        deviceCFSetRef = NULL;

        for (deviceIndex = 0; deviceIndex < deviceCount; deviceIndex++) {

            if (!tIOHIDDeviceRefs[deviceIndex]) {

                continue;

            }

            HIDDumpDeviceInfo(tIOHIDDeviceRefs[deviceIndex]);

#if true

            // and copy all the elements

            CFArrayRef elementCFArrayRef = IOHIDDeviceCopyMatchingElements(tIOHIDDeviceRefs[deviceIndex],

                                                                           NULL /* matchingCFDictRef */,

                                                                           kIOHIDOptionsTypeNone);

            if (elementCFArrayRef) {

                // iterate over all the elements

                CFIndex elementIndex,

                        elementCount = CFArrayGetCount(elementCFArrayRef);

                for (elementIndex = 0; elementIndex < elementCount; elementIndex++) {

                    IOHIDElementRef tIOHIDElementRef = (IOHIDElementRef)CFArrayGetValueAtIndex(elementCFArrayRef,

                                                                                               elementIndex);

                    if (tIOHIDElementRef) {

                        HIDDumpElementInfo(tIOHIDElementRef);

                    }

                }

                CFRelease(elementCFArrayRef);

            }

#endif

        }

    } while (false);

    if (tIOHIDDeviceRefs) {

        free(tIOHIDDeviceRefs);

    }

    if (deviceCFSetRef) {

        CFRelease(deviceCFSetRef);

        deviceCFSetRef = NULL;

    }

    if (tIOHIDManagerRef) {

        CFRelease(tIOHIDManagerRef);

    }

    return (0);

} // main