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Side by Side Diff: content/browser/bluetooth/bluetooth_blacklist.h

Issue 2554253002: bluetooth: web: Rename Blacklist to Blocklist (Closed)
Patch Set: Created 4 years ago
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1 // Copyright 2016 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
5 #ifndef CONTENT_BROWSER_BLUETOOTH_BLUETOOTH_BLACKLIST_H_
6 #define CONTENT_BROWSER_BLUETOOTH_BLUETOOTH_BLACKLIST_H_
7
8 #include <map>
9 #include <vector>
10
11 #include "base/lazy_instance.h"
12 #include "base/macros.h"
13 #include "base/strings/string_piece.h"
14 #include "content/common/content_export.h"
15 #include "device/bluetooth/bluetooth_uuid.h"
16 #include "third_party/WebKit/public/platform/modules/bluetooth/web_bluetooth.moj om.h"
17
18 namespace content {
19
20 // Implements the Web Bluetooth Blacklist policy as defined in the Web Bluetooth
21 // specification:
22 // https://webbluetoothcg.github.io/web-bluetooth/#the-gatt-blacklist
23 //
24 // Client code may query UUIDs to determine if they are excluded from use by the
25 // blacklist.
26 //
27 // Singleton access via Get() enforces only one copy of blacklist.
28 class CONTENT_EXPORT BluetoothBlacklist final {
29 public:
30 // Blacklist value terminology from Web Bluetooth specification:
31 // https://webbluetoothcg.github.io/web-bluetooth/#the-gatt-blacklist
32 enum class Value {
33 EXCLUDE, // Implies EXCLUDE_READS and EXCLUDE_WRITES.
34 EXCLUDE_READS, // Excluded from read operations.
35 EXCLUDE_WRITES // Excluded from write operations.
36 };
37
38 ~BluetoothBlacklist();
39
40 // Returns a singleton instance of the blacklist.
41 static BluetoothBlacklist& Get();
42
43 // Adds a UUID to the blacklist to be excluded from operations, merging with
44 // any previous value and resulting in the strictest exclusion rule from the
45 // combination of the two, E.G.:
46 // Add(uuid, EXCLUDE_READS);
47 // Add(uuid, EXCLUDE_WRITES);
48 // IsExcluded(uuid); // true.
49 // Requires UUID to be valid.
50 void Add(const device::BluetoothUUID&, Value);
51
52 // Adds UUIDs to the blacklist by parsing a blacklist string and calling
53 // Add(uuid, value).
54 //
55 // The blacklist string format is defined at
56 // ContentBrowserClient::GetWebBluetoothBlacklist().
57 //
58 // Malformed pairs in the string are ignored, including invalid UUID or
59 // exclusion values. Duplicate UUIDs follow Add()'s merging rule.
60 void Add(base::StringPiece blacklist_string);
61
62 // Returns if a UUID is excluded from all operations. UUID must be valid.
63 bool IsExcluded(const device::BluetoothUUID&) const;
64
65 // Returns if any UUID in a set of filters is excluded from all operations.
66 // UUID must be valid.
67 bool IsExcluded(
68 const mojo::Array<blink::mojom::WebBluetoothScanFilterPtr>& filters);
69
70 // Returns if a UUID is excluded from read operations. UUID must be valid.
71 bool IsExcludedFromReads(const device::BluetoothUUID&) const;
72
73 // Returns if a UUID is excluded from write operations. UUID must be valid.
74 bool IsExcludedFromWrites(const device::BluetoothUUID&) const;
75
76 // Modifies |options->optional_services|, removing any UUIDs with
77 // Value::EXCLUDE.
78 void RemoveExcludedUUIDs(
79 blink::mojom::WebBluetoothRequestDeviceOptions* options);
80
81 // Size of blacklist.
82 size_t size() { return blacklisted_uuids_.size(); }
83
84 void ResetToDefaultValuesForTest();
85
86 private:
87 // friend LazyInstance to permit access to private constructor.
88 friend base::DefaultLazyInstanceTraits<BluetoothBlacklist>;
89
90 BluetoothBlacklist();
91
92 void PopulateWithDefaultValues();
93
94 // Populates blacklist with values obtained dynamically from a server, able
95 // to be updated without shipping new executable versions.
96 void PopulateWithServerProvidedValues();
97
98 // Map of UUID to blacklisted value.
99 std::map<device::BluetoothUUID, Value> blacklisted_uuids_;
100
101 DISALLOW_COPY_AND_ASSIGN(BluetoothBlacklist);
102 };
103
104 } // namespace content
105
106 #endif // CONTENT_BROWSER_BLUETOOTH_BLUETOOTH_BLACKLIST_H_
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