xnu-3247.1.106.tar.gz

[apple/xnu.git] / libkdd / kcdata / KCDBasicTypeDescription.m

diff --git a/libkdd/kcdata/KCDBasicTypeDescription.m b/libkdd/kcdata/KCDBasicTypeDescription.m
new file mode 100644 (file)
index 0000000..151093b
--- /dev/null
+++ b/libkdd/kcdata/KCDBasicTypeDescription.m
@@ -0,0 +1,131 @@
+/*
+ * Copyright (c) 2015 Apple Inc. All rights reserved.
+ *
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
+ *
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * unlawful or unlicensed copies of an Apple operating system, or to
+ * circumvent, violate, or enable the circumvention or violation of, any
+ * terms of an Apple operating system software license agreement.
+ *
+ * Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this file.
+ *
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ *
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
+ */
+
+#import "KCDBasicTypeDescription.h"
+
+@interface
+KCDBasicTypeDescription () {
+       int _typeID;
+       uint32_t _size;
+       uint32_t _count;
+       NSString * _name;
+       struct kcdata_subtype_descriptor _subtype_desc;
+}
+
+@end
+
+@implementation KCDBasicTypeDescription
+
+- (id)initWithKCTypeDesc:(kcdata_subtype_descriptor_t)sub_type_desc
+{
+       _typeID = sub_type_desc->kcs_elem_type;
+       _count = kcs_get_elem_count(sub_type_desc);
+       _size = kcs_get_elem_size(sub_type_desc);
+
+       memcpy(&_subtype_desc, sub_type_desc, sizeof(_subtype_desc));
+       _name = [NSString stringWithFormat:@"%s", _subtype_desc.kcs_name];
+
+       return self;
+}
+
+- (id)createDefaultForType:(uint32_t)typeID
+{
+       struct kcdata_subtype_descriptor subtype;
+       subtype.kcs_flags = KCS_SUBTYPE_FLAGS_ARRAY;
+       subtype.kcs_elem_type = KC_ST_UINT8;
+       subtype.kcs_elem_offset = 0;
+       subtype.kcs_elem_size = KCS_SUBTYPE_PACK_SIZE(UINT16_MAX, (uint16_t)sizeof(uint8_t));
+       subtype.kcs_name[0] = '\0';
+       (void)[self initWithKCTypeDesc:&subtype];
+       _name = [NSString stringWithFormat:@"Type_0x%x", typeID];
+       return self;
+}
+
+- (NSObject *)objectForType:(kctype_subtype_t)elem_type withData:(uint8_t *)data
+{
+       NSObject * obj;
+
+       switch (elem_type) {
+       case KC_ST_CHAR: obj = [NSString stringWithFormat:@"%c", *(char *)data]; break;
+       case KC_ST_INT8: obj = [NSNumber numberWithInt:*(int8_t *)data]; break;
+       case KC_ST_UINT8: obj = [NSNumber numberWithInt:*(uint8_t *)data]; break;
+       case KC_ST_INT16: obj = [NSNumber numberWithShort:*(int16_t *)data]; break;
+       case KC_ST_UINT16: obj = [NSNumber numberWithUnsignedShort:*(uint16_t *)data]; break;
+       case KC_ST_INT32: obj = [NSNumber numberWithInt:*(int32_t *)data]; break;
+       case KC_ST_UINT32: obj = [NSNumber numberWithUnsignedInt:*(uint32_t *)data]; break;
+       case KC_ST_INT64: obj = [NSNumber numberWithLongLong:*(int64_t *)data]; break;
+       case KC_ST_UINT64: obj = [NSNumber numberWithUnsignedLongLong:*(uint64_t *)data]; break;
+
+       default: obj = @"<Unknown error occurred>"; break;
+       }
+
+       return obj;
+}
+
+- (NSMutableDictionary *)parseData:(void *)dataBuffer ofLength:(uint32_t)length
+{
+       NSMutableDictionary * retval = [[NSMutableDictionary alloc] init];
+       uint8_t * data = (uint8_t *)dataBuffer;
+       uint32_t elem_count = MIN(_count, length / (_size / _count));
+       uint32_t elem_size = _size / _count;
+       if (_count == 1) {
+               retval[_name] = [self objectForType:_subtype_desc.kcs_elem_type withData:&data[_subtype_desc.kcs_elem_offset]];
+       } else if (_subtype_desc.kcs_elem_type == KC_ST_CHAR) {
+               retval[_name] = [NSString stringWithFormat:@"%s", (char *)&data[_subtype_desc.kcs_elem_offset]];
+       } else {
+               NSMutableArray * objArray = [NSMutableArray arrayWithCapacity:elem_count];
+               for (unsigned int i = 0; i < elem_count; i++) {
+                       [objArray addObject:[self objectForType:_subtype_desc.kcs_elem_type
+                                                         withData:&data[(_subtype_desc.kcs_elem_offset + (elem_size * i))]]];
+               }
+               retval[_name] = objArray;
+       }
+       return retval;
+}
+
+- (NSString *)description
+{
+       return [NSString stringWithFormat:@"type: %d => \"%@\" ", [self typeID], [self name]];
+}
+
+- (NSString *)name
+{
+       return _name;
+}
+
+- (uint32_t)count
+{
+       return _count;
+}
+
+- (int)typeID
+{
+       return _typeID;
+}
+
+@end