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
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
content / browser / media / cdm_storage_manager.cc [blame]
// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/browser/media/cdm_storage_manager.h"
#include "base/metrics/histogram_functions.h"
#include "base/notreached.h"
#include "base/task/thread_pool.h"
#include "base/types/pass_key.h"
#include "content/browser/media/cdm_storage_common.h"
#include "content/public/common/content_features.h"
#include "media/cdm/cdm_type.h"
#include "media/mojo/mojom/cdm_storage.mojom.h"
namespace content {
namespace {
const char kUmaPrefix[] = "Media.EME.CdmStorageManager.";
const char kGetSizeForFileError[] = "GetSizeForFileError.";
const char kGetSizeForStorageKeyError[] = "GetSizeForStorageKeyError.";
const char kGetSizeForTimeFrameError[] = "GetSizeForTimeFrameError.";
const char kWriteFileError[] = "WriteFileError.";
const char kReadFileError[] = "ReadFileError.";
const char kDatabaseOpenErrorNoPeriod[] = "DatabaseOpenError";
const char kDatabaseOpenError[] = "DatabaseOpenError.";
const char kDatabaseSizeName[] = "CurrentDatabaseUsageKB.";
constexpr uint64_t kBytesPerKB = 1024;
constexpr int kMinDatabaseSizeKB = 0;
// Used for histogram reporting, the max size of the database we expect in KB.
constexpr uint64_t kMaxDatabaseSizeKB = 512000 * 10;
constexpr int kSizeKBBuckets = 1000;
// Creates a task runner suitable for running SQLite database operations.
scoped_refptr<base::SequencedTaskRunner> CreateDatabaseTaskRunner() {
// We use a SequencedTaskRunner so that there is a global ordering to a
// storage key's directory operations.
return base::ThreadPool::CreateSequencedTaskRunner({
// Needed for file I/O.
base::MayBlock(),
// Reasonable compromise, given that a few database operations are
// blocking, while most operations are not. We should be able to do better
// when we get scheduling APIs on the Web Platform.
base::TaskPriority::USER_VISIBLE,
// Needed to allow for clearing site data on shutdown.
base::TaskShutdownBehavior::BLOCK_SHUTDOWN,
});
}
} // namespace
CdmStorageManager::CdmStorageManager(const base::FilePath& path)
: path_(path), db_(CreateDatabaseTaskRunner(), path_) {}
CdmStorageManager::~CdmStorageManager() {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
}
void CdmStorageManager::Open(const std::string& file_name,
OpenCallback callback) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
if (file_name.empty()) {
DVLOG(1) << "No file specified.";
ReportDatabaseOpenError(CdmStorageOpenError::kNoFileSpecified);
std::move(callback).Run(Status::kFailure, mojo::NullAssociatedRemote());
return;
}
if (!CdmFileImpl::IsValidName(file_name)) {
DVLOG(1) << "Invalid name of file.";
ReportDatabaseOpenError(CdmStorageOpenError::kInvalidFileName);
std::move(callback).Run(Status::kFailure, mojo::NullAssociatedRemote());
return;
}
db_.AsyncCall(&CdmStorageDatabase::EnsureOpen)
.Then(base::BindOnce(&CdmStorageManager::DidOpenFile,
weak_factory_.GetWeakPtr(),
receivers_.current_context().storage_key,
receivers_.current_context().cdm_type, file_name,
std::move(callback)));
}
void CdmStorageManager::GetUsagePerAllStorageKeys(
base::OnceCallback<void(const CdmStorageKeyUsageSize&)> callback,
base::Time begin,
base::Time end) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
db_.AsyncCall(&CdmStorageDatabase::GetUsagePerAllStorageKeys)
.WithArgs(begin, end)
.Then(std::move(callback));
}
void CdmStorageManager::DeleteDataForStorageKey(
const blink::StorageKey& storage_key,
base::OnceCallback<void(bool)> callback) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
DeleteData(base::NullCallback(), storage_key, base::Time::Min(),
base::Time::Max(), std::move(callback));
}
void CdmStorageManager::OpenCdmStorage(
const CdmStorageBindingContext& binding_context,
mojo::PendingReceiver<media::mojom::CdmStorage> receiver) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
receivers_.Add(this, std::move(receiver), binding_context);
}
void CdmStorageManager::ReadFile(
const blink::StorageKey& storage_key,
const media::CdmType& cdm_type,
const std::string& file_name,
base::OnceCallback<void(std::optional<std::vector<uint8_t>>)> callback) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
db_.AsyncCall(&CdmStorageDatabase::ReadFile)
.WithArgs(storage_key, cdm_type, file_name)
.Then(base::BindOnce(&CdmStorageManager::DidReadFile,
weak_factory_.GetWeakPtr(), std::move(callback)));
}
void CdmStorageManager::WriteFile(const blink::StorageKey& storage_key,
const media::CdmType& cdm_type,
const std::string& file_name,
const std::vector<uint8_t>& data,
base::OnceCallback<void(bool)> callback) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
db_.AsyncCall(&CdmStorageDatabase::WriteFile)
.WithArgs(storage_key, cdm_type, file_name, data)
.Then(base::BindOnce(&CdmStorageManager::DidWriteFile,
weak_factory_.GetWeakPtr(), std::move(callback)));
}
void CdmStorageManager::GetSizeForFile(
const blink::StorageKey& storage_key,
const media::CdmType& cdm_type,
const std::string& file_name,
base::OnceCallback<void(uint64_t)> callback) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
db_.AsyncCall(&CdmStorageDatabase::GetSizeForFile)
.WithArgs(storage_key, cdm_type, file_name)
.Then(base::BindOnce(&CdmStorageManager::DidGetSize,
weak_factory_.GetWeakPtr(), std::move(callback),
kGetSizeForFileError));
}
void CdmStorageManager::GetSizeForStorageKey(
const blink::StorageKey& storage_key,
const base::Time begin,
const base::Time end,
base::OnceCallback<void(uint64_t)> callback) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
db_.AsyncCall(&CdmStorageDatabase::GetSizeForStorageKey)
.WithArgs(storage_key, begin, end)
.Then(base::BindOnce(&CdmStorageManager::DidGetSize,
weak_factory_.GetWeakPtr(), std::move(callback),
kGetSizeForStorageKeyError));
}
void CdmStorageManager::GetSizeForTimeFrame(
const base::Time begin,
const base::Time end,
base::OnceCallback<void(uint64_t)> callback) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
db_.AsyncCall(&CdmStorageDatabase::GetSizeForTimeFrame)
.WithArgs(begin, end)
.Then(base::BindOnce(&CdmStorageManager::DidGetSize,
weak_factory_.GetWeakPtr(), std::move(callback),
kGetSizeForTimeFrameError));
}
void CdmStorageManager::DeleteFile(const blink::StorageKey& storage_key,
const media::CdmType& cdm_type,
const std::string& file_name,
base::OnceCallback<void(bool)> callback) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
db_.AsyncCall(&CdmStorageDatabase::DeleteFile)
.WithArgs(storage_key, cdm_type, file_name)
.Then(std::move(callback));
}
void CdmStorageManager::DeleteData(
const StoragePartition::StorageKeyMatcherFunction& storage_key_matcher,
const blink::StorageKey& storage_key,
const base::Time begin,
const base::Time end,
base::OnceCallback<void(bool)> callback) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
db_.AsyncCall(&CdmStorageDatabase::DeleteData)
.WithArgs(storage_key_matcher, storage_key, begin, end)
.Then(std::move(callback));
}
void CdmStorageManager::OnFileReceiverDisconnect(
const std::string& name,
const media::CdmType& cdm_type,
const blink::StorageKey& storage_key,
base::PassKey<CdmFileImpl> pass_key) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
auto count = cdm_files_.erase(CdmFileIdTwo(name, cdm_type, storage_key));
DCHECK_GT(count, 0u);
}
void CdmStorageManager::DidOpenFile(const blink::StorageKey& storage_key,
const media::CdmType& cdm_type,
const std::string& file_name,
OpenCallback callback,
CdmStorageOpenError error) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
if (error != CdmStorageOpenError::kOk) {
ReportDatabaseOpenError(error);
std::move(callback).Run(Status::kFailure, mojo::NullAssociatedRemote());
return;
}
// Check whether this CDM file is in-use.
CdmFileIdTwo id(file_name, cdm_type, storage_key);
if (base::Contains(cdm_files_, id)) {
std::move(callback).Run(Status::kInUse, mojo::NullAssociatedRemote());
return;
}
// File was opened successfully, so create the binding and return success.
mojo::PendingAssociatedRemote<media::mojom::CdmFile> cdm_file;
cdm_files_.emplace(id, std::make_unique<CdmFileImpl>(
this, storage_key, cdm_type, file_name,
cdm_file.InitWithNewEndpointAndPassReceiver()));
std::move(callback).Run(Status::kSuccess, std::move(cdm_file));
}
void CdmStorageManager::DidReadFile(
base::OnceCallback<void(std::optional<std::vector<uint8_t>>)> callback,
std::optional<std::vector<uint8_t>> data) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
base::UmaHistogramBoolean(
GetCdmStorageManagerHistogramName(kReadFileError, in_memory()),
!data.has_value());
if (!database_size_reported_) {
db_.AsyncCall(&CdmStorageDatabase::GetDatabaseSize)
.Then(base::BindOnce(&CdmStorageManager::DidGetDatabaseSize,
weak_factory_.GetWeakPtr()));
database_size_reported_ = true;
}
std::move(callback).Run(data);
}
void CdmStorageManager::DidWriteFile(base::OnceCallback<void(bool)> callback,
bool success) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
base::UmaHistogramBoolean(
GetCdmStorageManagerHistogramName(kWriteFileError, in_memory()),
!success);
std::move(callback).Run(success);
}
void CdmStorageManager::DidGetSize(base::OnceCallback<void(uint64_t)> callback,
const std::string& operation,
std::optional<uint64_t> size) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
base::UmaHistogramBoolean(
GetCdmStorageManagerHistogramName(operation, in_memory()),
!size.has_value());
std::move(callback).Run(size.value_or(0));
}
void CdmStorageManager::DidGetDatabaseSize(const uint64_t size) {
// One time report DatabaseSize.
base::UmaHistogramCustomCounts(
GetCdmStorageManagerHistogramName(kDatabaseSizeName, in_memory()),
size / kBytesPerKB, kMinDatabaseSizeKB, kMaxDatabaseSizeKB,
kSizeKBBuckets);
}
// TODO(crbug.com/40272342) Investigate if we can propagate the SQL errors.
// Investigate adding delete functionality to 'MojoCdmHelper::CloseCdmFileIO' to
// close database on CdmFileIO closure.
void CdmStorageManager::ReportDatabaseOpenError(CdmStorageOpenError error) {
// General Errors without distinguishing incognito or not.
base::UmaHistogramEnumeration(
std::string{kUmaPrefix} + std::string{kDatabaseOpenErrorNoPeriod}, error);
// Histogram split by incognito and non-incognito.
base::UmaHistogramEnumeration(
GetCdmStorageManagerHistogramName(kDatabaseOpenError, in_memory()),
error);
}
} // namespace content