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
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
|
#define _BSD_SOURCE
#include "methods.h"
#include "byteswap.h"
#include "packet_kinds.h"
#include "../../toxcore/DHT.h"
static void decode_bytestring(msgpack_object_bin args, msgpack_packer *res,
int64_t min_length)
{
SUCCESS {
if (args.size < sizeof(uint64_t))
{
// Not enough space to even fit the size.
msgpack_pack_uint8(res, 0);
return;
}
uint64_t tmp;
memcpy(&tmp, args.ptr, sizeof(uint64_t));
int64_t length = be64toh(tmp);
// TODO(iphydf): Get rid of this case if/when
// https://github.com/kolmodin/binary/issues/127 is fixed. This is a
// workaround for a Haskell library bug. Our implementation here without
// the special case for negative length, and instead interpreting the
// length as unsigned integer, was correct.
if (length < 0)
{
length = 0;
}
if (args.size >= sizeof(uint64_t) && args.size == length + sizeof(uint64_t))
{
if (length < min_length) {
// CipherTexts need at least a MAC.
msgpack_pack_uint8(res, 0);
return;
}
msgpack_pack_array(res, 2);
msgpack_pack_uint8(res, 1);
msgpack_pack_bin(res, args.size - sizeof(uint64_t));
msgpack_pack_bin_body(res, args.ptr + sizeof(uint64_t), args.size - sizeof(uint64_t));
} else {
msgpack_pack_uint8(res, 0);
}
}
}
METHOD(bin, Binary_decode, CipherText)
{
decode_bytestring(args, res, CRYPTO_MAC_SIZE);
return 0;
}
METHOD(bin, Binary_decode, DhtPacket)
{
return pending;
}
METHOD(bin, Binary_decode, DhtRequestPacket)
{
return pending;
}
METHOD(bin, Binary_decode, HostAddress)
{
return pending;
}
METHOD(bin, Binary_decode, Word64)
{
return pending;
}
METHOD(bin, Binary_decode, Key_PublicKey)
{
return pending;
}
METHOD(bin, Binary_decode, KeyPair)
{
SUCCESS {
if (args.size != 64)
{
msgpack_pack_uint8(res, 0);
} else {
msgpack_pack_array(res, 2);
msgpack_pack_uint8(res, 1);
msgpack_pack_array(res, 2);
msgpack_pack_bin(res, 32);
msgpack_pack_bin_body(res, args.ptr, 32);
msgpack_pack_bin(res, 32);
msgpack_pack_bin_body(res, args.ptr + 32, 32);
}
}
return 0;
}
METHOD(bin, Binary_decode, NodeInfo)
{
uint16_t data_processed;
Node_format node;
int len = unpack_nodes(&node, 1, &data_processed, (uint8_t const *)args.ptr, args.size, 1);
bool ip6_node = node.ip_port.ip.family == AF_INET6 || node.ip_port.ip.family == TCP_INET6;
bool tcp = node.ip_port.ip.family == TCP_INET || node.ip_port.ip.family == TCP_INET6;
uint16_t port = ntohs(node.ip_port.port);
uint32_t ip4 = ntohl(node.ip_port.ip.ip4.uint32);
uint32_t ip6_0 = ntohl(node.ip_port.ip.ip6.uint32[0]);
uint32_t ip6_1 = ntohl(node.ip_port.ip.ip6.uint32[1]);
uint32_t ip6_2 = ntohl(node.ip_port.ip.ip6.uint32[2]);
uint32_t ip6_3 = ntohl(node.ip_port.ip.ip6.uint32[3]);
SUCCESS {
if (len > 0 && data_processed > 0 && data_processed == args.size)
{
msgpack_pack_array(res, 2);
msgpack_pack_uint8(res, 1);
msgpack_pack_array(res, 3);
msgpack_pack_uint8(res, tcp);
msgpack_pack_array(res, 2);
msgpack_pack_array(res, 2);
msgpack_pack_uint8(res, ip6_node);
if (ip6_node) {
msgpack_pack_array(res, 4);
msgpack_pack_uint32(res, ip6_0);
msgpack_pack_uint32(res, ip6_1);
msgpack_pack_uint32(res, ip6_2);
msgpack_pack_uint32(res, ip6_3);
} else {
msgpack_pack_uint32(res, ip4);
}
msgpack_pack_uint16(res, port);
msgpack_pack_bin(res, CRYPTO_PUBLIC_KEY_SIZE);
msgpack_pack_bin_body(res, &node.public_key, CRYPTO_PUBLIC_KEY_SIZE);
} else {
msgpack_pack_uint8(res, 0);
}
}
return 0;
}
METHOD(bin, Binary_decode, NodesRequest)
{
return pending;
}
METHOD(bin, Binary_decode, NodesResponse)
{
return pending;
}
METHOD(bin, Binary_decode, Packet_Word64)
{
return pending;
}
METHOD(bin, Binary_decode, PacketKind)
{
SUCCESS {
if (args.size != 1)
{
msgpack_pack_uint8(res, 0);
} else {
uint8_t kind = args.ptr[0];
size_t i;
for (i = 0; i < sizeof packet_kinds / sizeof *packet_kinds; i++)
{
if (packet_kinds[i] == kind) {
msgpack_pack_array(res, 2);
msgpack_pack_uint8(res, 1);
msgpack_pack_fix_uint8(res, i);
return 0;
}
}
// Packet kind not found => error.
msgpack_pack_uint8(res, 0);
}
}
return 0;
}
METHOD(bin, Binary_decode, PingPacket)
{
return pending;
}
METHOD(bin, Binary_decode, PlainText)
{
decode_bytestring(args, res, 0);
return 0;
}
METHOD(bin, Binary_decode, PortNumber)
{
SUCCESS {
if (args.size == 2)
{
uint16_t tmp;
memcpy(&tmp, args.ptr, 2);
uint16_t port = ntohs(tmp);
msgpack_pack_array(res, 2);
msgpack_pack_uint8(res, 1);
msgpack_pack_uint16(res, port);
} else {
msgpack_pack_uint8(res, 0);
}
}
return 0;
}
METHOD(bin, Binary_decode, RpcPacket_Word64)
{
return pending;
}
METHOD(bin, Binary_decode, SocketAddress)
{
return pending;
}
METHOD(bin, Binary_decode, TransportProtocol)
{
return pending;
}
METHOD(array, Binary, decode)
{
CHECK_SIZE(args, 2);
CHECK_TYPE(args.ptr[0], MSGPACK_OBJECT_STR);
CHECK_TYPE(args.ptr[1], MSGPACK_OBJECT_BIN);
msgpack_object_str type = args.ptr[0].via.str;
#define DISPATCH(TYPE) \
if (type.size == sizeof #TYPE - 1 && method_cmp(type.ptr, #TYPE, type.size) == 0) \
return Binary_decode_##TYPE(args.ptr[1].via.bin, res)
DISPATCH(CipherText);
DISPATCH(DhtPacket);
DISPATCH(DhtRequestPacket);
DISPATCH(HostAddress);
DISPATCH(Word64);
DISPATCH(Key_PublicKey);
DISPATCH(KeyPair);
DISPATCH(NodeInfo);
DISPATCH(NodesRequest);
DISPATCH(NodesResponse);
DISPATCH(Packet_Word64);
DISPATCH(PacketKind);
DISPATCH(PingPacket);
DISPATCH(PlainText);
DISPATCH(PortNumber);
DISPATCH(RpcPacket_Word64);
DISPATCH(SocketAddress);
DISPATCH(TransportProtocol);
#undef DISPATCH
return unimplemented;
}
|
