1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
|
/*
* Copyright (c) 2017 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
*/
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <LongBow/runtime.h>
#include <parc/algol/parc_Memory.h>
#include <parc/algol/parc_Object.h>
#include <parc/algol/parc_Buffer.h>
#include <ccnx/common/codec/schema_v1/ccnxCodecSchemaV1_Types.h>
#include <ccnx/common/codec/schema_v1/ccnxCodecSchemaV1_ManifestDecoder.h>
#include <ccnx/common/codec/ccnxCodec_TlvUtilities.h>
#include <ccnx/common/ccnx_PayloadType.h>
#include <ccnx/common/ccnx_InterestReturn.h>
#include <ccnx/common/ccnx_Manifest.h>
#include <ccnx/common/ccnx_ManifestHashGroup.h>
static bool
_decodeHashGroupMetadata(CCNxCodecTlvDecoder *decoder, CCNxManifestHashGroup *group, size_t length)
{
size_t offset = 0;
bool success = true;
while (offset < length) {
uint16_t type = ccnxCodecTlvDecoder_GetType(decoder);
uint16_t value_length = ccnxCodecTlvDecoder_GetLength(decoder);
PARCBuffer *value = ccnxCodecTlvDecoder_GetValue(decoder, value_length);
offset += (4 + value_length);
switch (type) {
case CCNxCodecSchemaV1Types_CCNxManifestHashGroupMetadata_Locator: {
char *nameString = parcBuffer_ToString(value);
const CCNxName *locator = ccnxName_CreateFromCString(nameString);
ccnxManifestHashGroup_SetLocator(group, locator);
parcMemory_Deallocate(&nameString);
ccnxName_Release((CCNxName **) &locator);
break;
}
case CCNxCodecSchemaV1Types_CCNxManifestHashGroupMetadata_DataSize: {
uint64_t dataSize = parcBuffer_GetUint64(value);
ccnxManifestHashGroup_SetDataSize(group, dataSize);
break;
}
case CCNxCodecSchemaV1Types_CCNxManifestHashGroupMetadata_BlockSize: {
uint64_t blockSize = parcBuffer_GetUint64(value);
ccnxManifestHashGroup_SetBlockSize(group, blockSize);
break;
}
case CCNxCodecSchemaV1Types_CCNxManifestHashGroupMetadata_EntrySize: {
uint64_t entrySize = parcBuffer_GetUint64(value);
ccnxManifestHashGroup_SetEntrySize(group, entrySize);
break;
}
case CCNxCodecSchemaV1Types_CCNxManifestHashGroupMetadata_TreeHeight: {
uint64_t treeHeight = parcBuffer_GetUint64(value);
ccnxManifestHashGroup_SetTreeHeight(group, treeHeight);
break;
}
case CCNxCodecSchemaV1Types_CCNxManifestHashGroupMetadata_OverallDataSha256: {
ccnxManifestHashGroup_SetOverallDataDigest(group, value);
break;
}
}
parcBuffer_Release(&value);
}
return success;
}
static bool
_decodeHashGroup(CCNxCodecTlvDecoder *decoder, CCNxTlvDictionary *packetDictionary, CCNxManifestHashGroup *group, size_t length)
{
bool success = true;
size_t offset = 0;
while (offset < length) {
uint16_t type = ccnxCodecTlvDecoder_GetType(decoder);
uint16_t value_length = ccnxCodecTlvDecoder_GetLength(decoder);
offset += (4 + value_length);
switch (type) {
case CCNxCodecSchemaV1Types_CCNxManifestHashGroup_Metadata: {
success = _decodeHashGroupMetadata(decoder, group, value_length);
if (!success) {
return false;
}
break;
}
case CCNxCodecSchemaV1Types_CCNxManifestHashGroup_DataPointer: {
PARCBuffer *buffer = ccnxCodecTlvDecoder_GetValue(decoder, value_length);
ccnxManifestHashGroup_AppendPointer(group, CCNxManifestHashGroupPointerType_Data, buffer);
parcBuffer_Release(&buffer);
break;
}
case CCNxCodecSchemaV1Types_CCNxManifestHashGroup_ManifestPointer: {
PARCBuffer *buffer = ccnxCodecTlvDecoder_GetValue(decoder, value_length);
ccnxManifestHashGroup_AppendPointer(group, CCNxManifestHashGroupPointerType_Manifest, buffer);
parcBuffer_Release(&buffer);
break;
}
default:
// if we do not know the TLV type, put it in this container's unknown list
success = ccnxCodecTlvUtilities_PutAsListBuffer(decoder, packetDictionary, type, value_length, CCNxCodecSchemaV1TlvDictionary_Lists_MESSAGE_LIST);
break;
}
if (!success) {
CCNxCodecError *error = ccnxCodecError_Create(TLV_ERR_DECODE, __func__, __LINE__, ccnxCodecTlvDecoder_Position(decoder));
ccnxCodecTlvDecoder_SetError(decoder, error);
ccnxCodecError_Release(&error);
}
}
CCNxManifestInterface *manifest = ccnxManifestInterface_GetInterface(packetDictionary);
manifest->addHashGroup(packetDictionary, group);
return success;
}
static bool
_decodeType(CCNxCodecTlvDecoder *decoder, CCNxTlvDictionary *packetDictionary, uint16_t type, uint16_t length)
{
bool success = false;
switch (type) {
case CCNxCodecSchemaV1Types_CCNxMessage_Name: {
success = ccnxCodecTlvUtilities_PutAsName(decoder, packetDictionary, type, length, CCNxCodecSchemaV1TlvDictionary_MessageFastArray_NAME);
break;
}
case CCNxCodecSchemaV1Types_CCNxMessage_HashGroup: {
CCNxManifestHashGroup *group = ccnxManifestHashGroup_Create();
success = _decodeHashGroup(decoder, packetDictionary, group, length);
ccnxManifestHashGroup_Release(&group);
break;
}
default:
// if we do not know the TLV type, put it in this container's unknown list
success = ccnxCodecTlvUtilities_PutAsListBuffer(decoder, packetDictionary, type, length, CCNxCodecSchemaV1TlvDictionary_Lists_MESSAGE_LIST);
break;
}
if (!success) {
CCNxCodecError *error = ccnxCodecError_Create(TLV_ERR_DECODE, __func__, __LINE__, ccnxCodecTlvDecoder_Position(decoder));
ccnxCodecTlvDecoder_SetError(decoder, error);
ccnxCodecError_Release(&error);
}
return success;
}
/*
* We are given a decoder that points to the first TLV of a list of TLVs. We keep walking the
* list until we come to the end of the decoder.
*/
bool
ccnxCodecSchemaV1ManifestDecoder_Decode(CCNxCodecTlvDecoder *decoder, CCNxTlvDictionary *manifestDictionary)
{
return ccnxCodecTlvUtilities_DecodeContainer(decoder, manifestDictionary, _decodeType);
}
|
