blob: ddeeadf6de1a5418a0c3cb4b07bbbdc18b884d6d (
plain)
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
|
// Copyright 2020 Google LLC
//
// 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
//
// https://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 "connections/implementation/mediums/ble_v2/ble_packet.h"
#include "absl/strings/str_cat.h"
#include "internal/platform/base_input_stream.h"
#include "internal/platform/logging.h"
namespace location {
namespace nearby {
namespace connections {
namespace mediums {
BlePacket::BlePacket(const ByteArray& service_id_hash, const ByteArray& data) {
if (service_id_hash.size() != kServiceIdHashLength ||
data.size() > kMaxDataSize) {
return;
}
service_id_hash_ = service_id_hash;
data_ = data;
}
BlePacket::BlePacket(const ByteArray& ble_packet_bytes) {
if (ble_packet_bytes.Empty()) {
NEARBY_LOG(ERROR, "Cannot deserialize BlePacket: null bytes passed in");
return;
}
if (ble_packet_bytes.size() < kServiceIdHashLength) {
NEARBY_LOG(
INFO,
"Cannot deserialize BlePacket: expecting min %u raw bytes, got %zu",
kServiceIdHashLength, ble_packet_bytes.size());
return;
}
ByteArray packet_bytes{ble_packet_bytes};
BaseInputStream base_input_stream{packet_bytes};
// The first 3 bytes are supposed to be the service_id_hash.
service_id_hash_ = base_input_stream.ReadBytes(kServiceIdHashLength);
// The rest bytes are supposed to be the data.
data_ = base_input_stream.ReadBytes(ble_packet_bytes.size() -
kServiceIdHashLength);
}
BlePacket::operator ByteArray() const {
if (!IsValid()) {
return ByteArray();
}
std::string out =
absl::StrCat(std::string(service_id_hash_), std::string(data_));
return ByteArray(std::move(out));
}
} // namespace mediums
} // namespace connections
} // namespace nearby
} // namespace location
|
