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[email protected]5c8589ac2012-04-23 18:42:531// Copyright (c) 2012 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
[email protected]cab208eb02012-10-18 22:15:235#include "device/bluetooth/bluetooth_utils.h"
[email protected]5c8589ac2012-04-23 18:42:536
7#include <vector>
8
[email protected]246493d2013-02-03 18:24:039#include "base/basictypes.h"
[email protected]5c8589ac2012-04-23 18:42:5310#include "base/logging.h"
[email protected]0d8db082013-06-11 07:27:0111#include "base/strings/string_util.h"
[email protected]88e93622012-06-28 23:39:3012
[email protected]cab208eb02012-10-18 22:15:2313namespace device {
[email protected]5c8589ac2012-04-23 18:42:5314namespace bluetooth_utils {
15
[email protected]6e26d082014-02-06 10:23:0716namespace {
17
18const char* kCommonUuidPostfix = "-0000-1000-8000-00805f9b34fb";
19const char* kCommonUuidPrefix = "0000";
20const int kUuidSize = 36;
21
22// Returns the canonical, 128-bit canonical, and the format of the UUID
23// in |canonical|, |canonical_128|, and |format| based on |uuid|.
24void GetCanonicalUuid(std::string uuid,
25 std::string* canonical,
26 std::string* canonical_128,
27 UUID::Format* format) {
28 // Initialize the values for the failure case.
29 canonical->clear();
30 canonical_128->clear();
31 *format = UUID::kFormatInvalid;
32
[email protected]88e93622012-06-28 23:39:3033 if (uuid.empty())
[email protected]6e26d082014-02-06 10:23:0734 return;
[email protected]88e93622012-06-28 23:39:3035
36 if (uuid.size() < 11 && uuid.find("0x") == 0)
37 uuid = uuid.substr(2);
38
39 if (!(uuid.size() == 4 || uuid.size() == 8 || uuid.size() == 36))
[email protected]6e26d082014-02-06 10:23:0740 return;
[email protected]88e93622012-06-28 23:39:3041
42 if (uuid.size() == 4 || uuid.size() == 8) {
43 for (size_t i = 0; i < uuid.size(); ++i) {
44 if (!IsHexDigit(uuid[i]))
[email protected]6e26d082014-02-06 10:23:0745 return;
[email protected]88e93622012-06-28 23:39:3046 }
[email protected]6e26d082014-02-06 10:23:0747 if (uuid.size() == 4) {
48 canonical->assign(uuid);
49 canonical_128->assign(kCommonUuidPrefix + uuid + kCommonUuidPostfix);
50 *format = UUID::kFormat16Bit;
51 return;
52 }
53 canonical->assign(uuid);
54 canonical_128->assign(uuid + kCommonUuidPostfix);
55 *format = UUID::kFormat32Bit;
56 return;
[email protected]88e93622012-06-28 23:39:3057 }
58
[email protected]88e93622012-06-28 23:39:3059 for (int i = 0; i < kUuidSize; ++i) {
60 if (i == 8 || i == 13 || i == 18 || i == 23) {
61 if (uuid[i] != '-')
[email protected]6e26d082014-02-06 10:23:0762 return;
[email protected]88e93622012-06-28 23:39:3063 } else {
64 if (!IsHexDigit(uuid[i]))
[email protected]6e26d082014-02-06 10:23:0765 return;
66 uuid[i] = tolower(uuid[i]);
[email protected]88e93622012-06-28 23:39:3067 }
68 }
[email protected]6e26d082014-02-06 10:23:0769
70 canonical->assign(uuid);
71 canonical_128->assign(uuid);
72 *format = UUID::kFormat128Bit;
73}
74
75} // namespace
76
77
78UUID::UUID(const std::string& uuid) {
79 GetCanonicalUuid(uuid, &value_, &canonical_value_, &format_);
80}
81
82UUID::UUID() : format_(kFormatInvalid) {
83}
84
85UUID::~UUID() {
86}
87
88bool UUID::IsValid() const {
89 return format_ != kFormatInvalid;
90}
91
92bool UUID::operator<(const UUID& uuid) const {
93 return canonical_value_ < uuid.canonical_value_;
94}
95
96bool UUID::operator==(const UUID& uuid) const {
97 return canonical_value_ == uuid.canonical_value_;
98}
99
100bool UUID::operator!=(const UUID& uuid) const {
101 return canonical_value_ != uuid.canonical_value_;
102}
103
104std::string CanonicalUuid(std::string uuid) {
105 std::string value;
106 std::string canonical_value;
107 UUID::Format format;
108 GetCanonicalUuid(uuid, &value, &canonical_value, &format);
109 return canonical_value;
[email protected]88e93622012-06-28 23:39:30110}
111
[email protected]5c8589ac2012-04-23 18:42:53112} // namespace bluetooth_utils
[email protected]cab208eb02012-10-18 22:15:23113} // namespace device