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
|
/*
* Copyright 2015, Mozilla Foundation and contributors
*
* 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
*
* http://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 "ClearKeyPersistence.h"
#include <assert.h>
#include <stdint.h>
#include <string.h>
#include <sstream>
#include "ClearKeySessionManager.h"
#include "ClearKeyStorage.h"
#include "ClearKeyUtils.h"
#include "RefCounted.h"
using namespace cdm;
using std::function;
using std::string;
using std::stringstream;
using std::vector;
void ClearKeyPersistence::ReadAllRecordsFromIndex(
function<void()>&& aOnComplete) {
// Clear what we think the index file contains, we're about to read it again.
mPersistentSessionIds.clear();
// Hold a reference to the persistence manager, so it isn't released before
// we try and use it.
RefPtr<ClearKeyPersistence> self(this);
function<void(const uint8_t*, uint32_t)> onIndexSuccess =
[self, aOnComplete](const uint8_t* data, uint32_t size) {
CK_LOGD("ClearKeyPersistence: Loaded index file!");
const char* charData = (const char*)data;
stringstream ss(string(charData, charData + size));
string name;
while (getline(ss, name)) {
if (ClearKeyUtils::IsValidSessionId(name.data(), name.size())) {
self->mPersistentSessionIds.insert(atoi(name.c_str()));
}
}
self->mPersistentKeyState = PersistentKeyState::LOADED;
aOnComplete();
};
function<void()> onIndexFailed = [self, aOnComplete]() {
CK_LOGD(
"ClearKeyPersistence: Failed to load index file (it might not exist");
self->mPersistentKeyState = PersistentKeyState::LOADED;
aOnComplete();
};
string filename = "index";
ReadData(mHost, filename, std::move(onIndexSuccess),
std::move(onIndexFailed));
}
void ClearKeyPersistence::WriteIndex() {
function<void()> onIndexSuccess = []() {
CK_LOGD("ClearKeyPersistence: Wrote index file");
};
function<void()> onIndexFail = []() {
CK_LOGD("ClearKeyPersistence: Failed to write index file (this is bad)");
};
stringstream ss;
for (const uint32_t& sessionId : mPersistentSessionIds) {
ss << sessionId;
ss << '\n';
}
string dataString = ss.str();
uint8_t* dataArray = (uint8_t*)dataString.data();
vector<uint8_t> data(dataArray, dataArray + dataString.size());
string filename = "index";
WriteData(mHost, filename, data, std::move(onIndexSuccess),
std::move(onIndexFail));
}
ClearKeyPersistence::ClearKeyPersistence(Host_10* aHost) {
this->mHost = aHost;
}
void ClearKeyPersistence::EnsureInitialized(bool aPersistentStateAllowed,
function<void()>&& aOnInitialized) {
if (aPersistentStateAllowed &&
mPersistentKeyState == PersistentKeyState::UNINITIALIZED) {
mPersistentKeyState = LOADING;
ReadAllRecordsFromIndex(std::move(aOnInitialized));
} else {
mPersistentKeyState = PersistentKeyState::LOADED;
aOnInitialized();
}
}
bool ClearKeyPersistence::IsLoaded() const {
return mPersistentKeyState == PersistentKeyState::LOADED;
}
string ClearKeyPersistence::GetNewSessionId(SessionType aSessionType) {
static uint32_t sNextSessionId = 1;
// Ensure we don't re-use a session id that was persisted.
while (Contains(mPersistentSessionIds, sNextSessionId)) {
sNextSessionId++;
}
string sessionId;
stringstream ss;
ss << sNextSessionId;
ss >> sessionId;
if (aSessionType == SessionType::kPersistentLicense) {
mPersistentSessionIds.insert(sNextSessionId);
// Save the updated index file.
WriteIndex();
}
sNextSessionId++;
return sessionId;
}
bool ClearKeyPersistence::IsPersistentSessionId(const string& aSessionId) {
return Contains(mPersistentSessionIds, atoi(aSessionId.c_str()));
}
void ClearKeyPersistence::PersistentSessionRemoved(string& aSessionId) {
mPersistentSessionIds.erase(atoi(aSessionId.c_str()));
// Update the index file.
WriteIndex();
}
|
