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ykcore_osx.c

/* -*- mode:C; c-file-style: "bsd" -*- */
/*
 * Copyright (c) 2008, 2009, Yubico AB
 * Copyright (c) 2009, Christer Kaivo-oja <christer.kaivooja@gmail.com>
 * 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.
 *
 * 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
 * OWNER 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.
 */

#include "ykcore.h"
#include "ykdef.h"
#include "ykcore_backend.h"

#include <IOKit/hid/IOHIDLib.h>
#include <IOKit/hid/IOHIDKeys.h>
#include <CoreFoundation/CoreFoundation.h>

#include "ykcore_backend.h"

#define     FEATURE_RPT_SIZE        8

static IOHIDManagerRef ykosxManager = NULL;
static IOReturn _ykusb_IOReturn = 0;

int _ykusb_start(void)
{
      ykosxManager = IOHIDManagerCreate( kCFAllocatorDefault, 0L );
      
      return 1;
}

int _ykusb_stop(void)
{
      if (ykosxManager != NULL) {
            _ykusb_IOReturn = IOHIDManagerClose( ykosxManager, 0L );
      
            if (_ykusb_IOReturn == kIOReturnSuccess) {
                  ykosxManager = NULL;
                  return 1;
            }
      }
      
      yk_errno = YK_EUSBERR;
      return 0;
}

static void _ykosx_CopyToCFArray(const void *value, void *context)
{
      CFArrayAppendValue( ( CFMutableArrayRef ) context, value );
}

void *_ykusb_open_device(int vendor_id, int product_id)
{
      void *yk = NULL;
      CFDictionaryRef dict;
      CFStringRef keys[2];
      CFStringRef values[2];
      
      yk_errno = YK_EUSBERR;
      
      CFNumberRef vendorID = CFNumberCreate( kCFAllocatorDefault, kCFNumberIntType, &vendor_id );
      CFNumberRef productID = CFNumberCreate( kCFAllocatorDefault, kCFNumberIntType, &product_id );
      
      keys[0] = CFSTR( kIOHIDVendorIDKey );  values[0] = (void *) vendorID;
      keys[1] = CFSTR( kIOHIDProductIDKey ); values[1] = (void *) productID;

      dict = CFDictionaryCreate( kCFAllocatorDefault, (const void **) &keys, (const void **) &values, 1, NULL, NULL);

      IOHIDManagerSetDeviceMatching( ykosxManager, dict );
      
      CFSetRef devSet = IOHIDManagerCopyDevices( ykosxManager );
      
      if ( devSet ) {
            
            CFMutableArrayRef array = CFArrayCreateMutable( kCFAllocatorDefault, 0, NULL );
            
            CFSetApplyFunction( devSet, _ykosx_CopyToCFArray, array );

            CFIndex cnt = CFArrayGetCount( array );
            
            if (cnt > 0) {
                  yk = (void *) CFArrayGetValueAtIndex( array, 0 );
            }
            else
                  yk_errno = YK_ENOKEY;
            
            CFRelease( array );
            CFRelease( devSet );
      }
      
      CFRelease( dict );
      CFRelease( vendorID );
      CFRelease( productID );
      
      if (yk) {
            _ykusb_IOReturn = IOHIDDeviceOpen( yk, 0L );
            
            if ( _ykusb_IOReturn != kIOReturnSuccess ) {
                  yk_release();
                  return 0;
            }
            
            return yk;
      }
      
      return 0;
}

int _ykusb_close_device(void *dev)
{
      _ykusb_IOReturn = IOHIDDeviceClose( dev, 0L );
      
      if ( _ykusb_IOReturn == kIOReturnSuccess )
            return 1;
      
      yk_errno = YK_EUSBERR;
      return 0;
}

int _ykusb_read(void *dev, int report_type, int report_number,
            char *buffer, int size)
{
      if (report_type != REPORT_TYPE_FEATURE)
      {
            yk_errno = YK_ENOTYETIMPL;
            return 0;
      }
      
      _ykusb_IOReturn = IOHIDDeviceGetReport( dev, kIOHIDReportTypeFeature, report_number, (uint8_t *)buffer, (CFIndex *) &size );
      
      if ( _ykusb_IOReturn != kIOReturnSuccess )
      {
            yk_errno = YK_EUSBERR;
            return 0;
      }
      
      return size;
}

int _ykusb_write(void *dev, int report_type, int report_number,
            char *buffer, int size)
{
      if (report_type != REPORT_TYPE_FEATURE)
      {
            yk_errno = YK_ENOTYETIMPL;
            return 0;
      }
      
      _ykusb_IOReturn = IOHIDDeviceSetReport( dev, kIOHIDReportTypeFeature, report_number, (unsigned char *)buffer, size);
      
      if ( _ykusb_IOReturn != kIOReturnSuccess )
      {
            yk_errno = YK_EUSBERR;
            return 0;
      }
      
      return 1;
}

const char *_ykusb_strerror()
{
      return "USB error\n";
//    fprintf(out, "USB error: %x\n", _ykusb_IOReturn);
}

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