1 /******************************************************************************
2 *
3 * Copyright 2017 The Android Open Source Project
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at:
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 *
17 ******************************************************************************/
18
19 #include "raw_address.h"
20
21 #include <base/strings/string_split.h>
22 #include <base/strings/stringprintf.h>
23 #include <stdint.h>
24 #include <algorithm>
25 #include <vector>
26
27 static_assert(sizeof(RawAddress) == 6, "RawAddress must be 6 bytes long!");
28
29 const RawAddress RawAddress::kAny{{0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF}};
30 const RawAddress RawAddress::kEmpty{{0x00, 0x00, 0x00, 0x00, 0x00, 0x00}};
31
RawAddress(const uint8_t (& addr)[6])32 RawAddress::RawAddress(const uint8_t (&addr)[6]) {
33 std::copy(addr, addr + kLength, address);
34 }
35
ToString() const36 std::string RawAddress::ToString() const {
37 return base::StringPrintf("%02x:%02x:%02x:%02x:%02x:%02x", address[0],
38 address[1], address[2], address[3], address[4],
39 address[5]);
40 }
41
FromString(const std::string & from,RawAddress & to)42 bool RawAddress::FromString(const std::string& from, RawAddress& to) {
43 RawAddress new_addr;
44 if (from.length() != 17) return false;
45
46 std::vector<std::string> byte_tokens =
47 base::SplitString(from, ":", base::TRIM_WHITESPACE, base::SPLIT_WANT_ALL);
48
49 if (byte_tokens.size() != 6) return false;
50
51 for (int i = 0; i < 6; i++) {
52 const auto& token = byte_tokens[i];
53
54 if (token.length() != 2) return false;
55
56 char* temp = nullptr;
57 new_addr.address[i] = strtol(token.c_str(), &temp, 16);
58 if (*temp != '\0') return false;
59 }
60
61 to = new_addr;
62 return true;
63 }
64
FromOctets(const uint8_t * from)65 size_t RawAddress::FromOctets(const uint8_t* from) {
66 std::copy(from, from + kLength, address);
67 return kLength;
68 };
69
IsValidAddress(const std::string & address)70 bool RawAddress::IsValidAddress(const std::string& address) {
71 RawAddress tmp;
72 return RawAddress::FromString(address, tmp);
73 }
74