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
|
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "mozilla/dom/FileSystemManager.h"
#include "FileSystemBackgroundRequestHandler.h"
#include "fs/FileSystemRequestHandler.h"
#include "mozilla/ErrorResult.h"
#include "mozilla/dom/FileSystemManagerChild.h"
#include "mozilla/dom/Promise.h"
#include "mozilla/dom/StorageManager.h"
#include "mozilla/dom/fs/ManagedMozPromiseRequestHolder.h"
#include "mozilla/dom/quota/QuotaCommon.h"
#include "mozilla/dom/quota/ResultExtensions.h"
namespace mozilla::dom {
FileSystemManager::FileSystemManager(
nsIGlobalObject* aGlobal, RefPtr<StorageManager> aStorageManager,
RefPtr<FileSystemBackgroundRequestHandler> aBackgroundRequestHandler)
: mGlobal(aGlobal),
mStorageManager(std::move(aStorageManager)),
mBackgroundRequestHandler(std::move(aBackgroundRequestHandler)),
mRequestHandler(new fs::FileSystemRequestHandler()) {}
FileSystemManager::FileSystemManager(nsIGlobalObject* aGlobal,
RefPtr<StorageManager> aStorageManager)
: FileSystemManager(aGlobal, std::move(aStorageManager),
MakeRefPtr<FileSystemBackgroundRequestHandler>()) {}
FileSystemManager::~FileSystemManager() { MOZ_ASSERT(mShutdown); }
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(FileSystemManager)
NS_INTERFACE_MAP_ENTRY(nsISupports)
NS_INTERFACE_MAP_END
NS_IMPL_CYCLE_COLLECTING_ADDREF(FileSystemManager);
NS_IMPL_CYCLE_COLLECTING_RELEASE(FileSystemManager);
NS_IMPL_CYCLE_COLLECTION(FileSystemManager, mGlobal, mStorageManager);
void FileSystemManager::Shutdown() {
mShutdown.Flip();
auto shutdownAndDisconnect = [self = RefPtr(this)]() {
self->mBackgroundRequestHandler->Shutdown();
for (RefPtr<PromiseRequestHolder<BoolPromise>> holder :
self->mPromiseRequestHolders.ForwardRange()) {
holder->DisconnectIfExists();
}
};
if (NS_IsMainThread()) {
if (mBackgroundRequestHandler->FileSystemManagerChildStrongRef()) {
mBackgroundRequestHandler->FileSystemManagerChildStrongRef()
->CloseAllWritables(
[shutdownAndDisconnect = std::move(shutdownAndDisconnect)]() {
shutdownAndDisconnect();
});
} else {
shutdownAndDisconnect();
}
} else {
if (mBackgroundRequestHandler->FileSystemManagerChildStrongRef()) {
// FileSystemAccessHandles and FileSystemWritableFileStreams prevent
// shutdown until they are full closed, so at this point, they all should
// be closed.
MOZ_ASSERT(mBackgroundRequestHandler->FileSystemManagerChildStrongRef()
->AllSyncAccessHandlesClosed());
MOZ_ASSERT(mBackgroundRequestHandler->FileSystemManagerChildStrongRef()
->AllWritableFileStreamsClosed());
}
shutdownAndDisconnect();
}
}
const RefPtr<FileSystemManagerChild>& FileSystemManager::ActorStrongRef()
const {
return mBackgroundRequestHandler->FileSystemManagerChildStrongRef();
}
void FileSystemManager::RegisterPromiseRequestHolder(
PromiseRequestHolder<BoolPromise>* aHolder) {
mPromiseRequestHolders.AppendElement(aHolder);
}
void FileSystemManager::UnregisterPromiseRequestHolder(
PromiseRequestHolder<BoolPromise>* aHolder) {
mPromiseRequestHolders.RemoveElement(aHolder);
}
void FileSystemManager::BeginRequest(
std::function<void(const RefPtr<FileSystemManagerChild>&)>&& aSuccess,
std::function<void(nsresult)>&& aFailure) {
MOZ_ASSERT(!mShutdown);
MOZ_ASSERT(mGlobal);
// Check if we're allowed to use storage
if (mGlobal->GetStorageAccess() < StorageAccess::eSessionScoped) {
aFailure(NS_ERROR_DOM_SECURITY_ERR);
return;
}
if (mBackgroundRequestHandler->FileSystemManagerChildStrongRef()) {
aSuccess(mBackgroundRequestHandler->FileSystemManagerChildStrongRef());
return;
}
QM_TRY_INSPECT(const auto& principalInfo, mGlobal->GetStorageKey(), QM_VOID,
[&aFailure](nsresult rv) { aFailure(rv); });
auto holder = MakeRefPtr<PromiseRequestHolder<BoolPromise>>(this);
mBackgroundRequestHandler->CreateFileSystemManagerChild(principalInfo)
->Then(GetCurrentSerialEventTarget(), __func__,
[self = RefPtr<FileSystemManager>(this), holder,
success = std::move(aSuccess), failure = std::move(aFailure)](
const BoolPromise::ResolveOrRejectValue& aValue) {
holder->Complete();
if (aValue.IsResolve()) {
success(self->mBackgroundRequestHandler
->FileSystemManagerChildStrongRef());
} else {
failure(aValue.RejectValue());
}
})
->Track(*holder);
}
already_AddRefed<Promise> FileSystemManager::GetDirectory(ErrorResult& aError) {
MOZ_ASSERT(mGlobal);
RefPtr<Promise> promise = Promise::Create(mGlobal, aError);
if (NS_WARN_IF(aError.Failed())) {
return nullptr;
}
MOZ_ASSERT(promise);
mRequestHandler->GetRootHandle(this, promise, aError);
if (NS_WARN_IF(aError.Failed())) {
return nullptr;
}
return promise.forget();
}
} // namespace mozilla::dom
|
