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
|
/*
* 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_Buffer.h>
#include <ccnx/common/codec/schema_v1/ccnxCodecSchemaV1_ValidationDecoder.h>
#include <ccnx/common/codec/schema_v1/ccnxCodecSchemaV1_Types.h>
#include <ccnx/common/codec/ccnxCodec_TlvUtilities.h>
#include <ccnx/common/codec/schema_v1/ccnxCodecSchemaV1_LinkCodec.h>
#include <ccnx/common/codec/schema_v1/ccnxCodecSchemaV1_CryptoSuite.h>
static bool
_decodeKeyName(CCNxCodecTlvDecoder *decoder, CCNxTlvDictionary *packetDictionary, uint16_t type, uint16_t length)
{
// At this point, the decoder should point to the 1st byte of the "value" of the (type, length) continer.
// This is defined as a CCNxLink
bool success = false;
// this will set the decoder error if it fails.
CCNxLink *link = ccnxCodecSchemaV1LinkCodec_DecodeValue(decoder, length);
if (link != NULL) {
const CCNxName *name = ccnxLink_GetName(link);
if (name != NULL) {
success = ccnxTlvDictionary_PutName(packetDictionary, CCNxCodecSchemaV1TlvDictionary_ValidationFastArray_KEYNAME_NAME, name);
if (success) {
PARCBuffer *keyid = ccnxLink_GetKeyID(link);
if (keyid) {
ccnxTlvDictionary_PutBuffer(packetDictionary, CCNxCodecSchemaV1TlvDictionary_ValidationFastArray_KEYNAME_KEYID, keyid);
}
PARCBuffer *hash = ccnxLink_GetContentObjectHash(link);
if (hash) {
ccnxTlvDictionary_PutBuffer(packetDictionary, CCNxCodecSchemaV1TlvDictionary_ValidationFastArray_KEYNAME_OBJHASH, hash);
}
}
}
if (!success) {
CCNxCodecError *error = ccnxCodecError_Create(TLV_ERR_DECODE, __func__, __LINE__, ccnxCodecTlvDecoder_Position(decoder));
ccnxCodecTlvDecoder_SetError(decoder, error);
ccnxCodecError_Release(&error);
}
ccnxLink_Release(&link);
}
return success;
}
static bool
_decodeAlgParametersType(CCNxCodecTlvDecoder *decoder, CCNxTlvDictionary *packetDictionary, uint16_t type, uint16_t length)
{
bool success = false;
switch (type) {
case CCNxCodecSchemaV1Types_ValidationAlg_Cert:
success = ccnxCodecTlvUtilities_PutAsBuffer(decoder, packetDictionary, type, length, CCNxCodecSchemaV1TlvDictionary_ValidationFastArray_CERT);
break;
case CCNxCodecSchemaV1Types_ValidationAlg_KeyId:
success = ccnxCodecTlvUtilities_PutAsBuffer(decoder, packetDictionary, type, length, CCNxCodecSchemaV1TlvDictionary_ValidationFastArray_KEYID);
break;
case CCNxCodecSchemaV1Types_ValidationAlg_KeyName:
// The "value" is a link
success = _decodeKeyName(decoder, packetDictionary, type, length);
break;
case CCNxCodecSchemaV1Types_ValidationAlg_SigTime:
// This is a time, so put it as an Integer
success = ccnxCodecTlvUtilities_PutAsInteger(decoder, packetDictionary, type, length, CCNxCodecSchemaV1TlvDictionary_ValidationFastArray_SIGNTIME);
break;
case CCNxCodecSchemaV1Types_ValidationAlg_PublicKey:
success = ccnxCodecTlvUtilities_PutAsBuffer(decoder, packetDictionary, type, length, CCNxCodecSchemaV1TlvDictionary_ValidationFastArray_KEY);
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_VALIDATION_ALG_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;
}
/**
* Called by _decodeAlgType() via ccnxCodecTlvUtilities_DecodeSubcontainer() to decode the
* algorithm specific parameters
*/
static bool
_decodeAlgParameters(CCNxCodecTlvDecoder *decoder, CCNxTlvDictionary *packetDictionary)
{
return ccnxCodecTlvUtilities_DecodeContainer(decoder, packetDictionary, _decodeAlgParametersType);
}
static bool
_decodeAlgType(CCNxCodecTlvDecoder *decoder, CCNxTlvDictionary *packetDictionary, uint16_t type, uint16_t length)
{
bool success = false;
PARCCryptoSuite parcSuite;
bool match = ccnxCodecSchemaV1CryptoSuite_TlvToParc((CCNxCodecSchemaV1TlvDictionary_CryptoSuite) type, &parcSuite);
if (match) {
success = ccnxTlvDictionary_PutInteger(packetDictionary, CCNxCodecSchemaV1TlvDictionary_ValidationFastArray_CRYPTO_SUITE, parcSuite);
if (success) {
success = ccnxCodecTlvUtilities_DecodeSubcontainer(decoder, packetDictionary, type, length, _decodeAlgParameters);
}
} else {
// 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_VALIDATION_ALG_LIST);
}
if (!success) {
CCNxCodecError *error = ccnxCodecError_Create(TLV_ERR_DECODE, __func__, __LINE__, ccnxCodecTlvDecoder_Position(decoder));
ccnxCodecTlvDecoder_SetError(decoder, error);
ccnxCodecError_Release(&error);
}
return success;
}
// ==================
// Public API
bool
ccnxCodecSchemaV1ValidationDecoder_DecodeAlg(CCNxCodecTlvDecoder *decoder, CCNxTlvDictionary *packetDictionary)
{
return ccnxCodecTlvUtilities_DecodeContainer(decoder, packetDictionary, _decodeAlgType);
}
bool
ccnxCodecSchemaV1ValidationDecoder_DecodePayload(CCNxCodecTlvDecoder *decoder, CCNxTlvDictionary *packetDictionary)
{
bool success = false;
// A 0-length payload is treaded like an error
size_t remaining = ccnxCodecTlvDecoder_Remaining(decoder);
if (remaining > 0) {
PARCBuffer *payload = ccnxCodecTlvDecoder_GetValue(decoder, remaining);
success = ccnxTlvDictionary_PutBuffer(packetDictionary, CCNxCodecSchemaV1TlvDictionary_ValidationFastArray_PAYLOAD, payload);
parcBuffer_Release(&payload);
}
return success;
}
|
