summaryrefslogtreecommitdiffstats
path: root/dom/cache/CacheOpParent.cpp
blob: fb46ccac79d09fb3bf9b8204ddc7b47289db33ad (plain)
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
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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/cache/CacheOpParent.h"

#include "mozilla/Unused.h"
#include "mozilla/dom/cache/AutoUtils.h"
#include "mozilla/dom/cache/ReadStream.h"
#include "mozilla/dom/cache/SavedTypes.h"
#include "mozilla/ipc/FileDescriptorSetParent.h"
#include "mozilla/ipc/InputStreamUtils.h"
#include "mozilla/ipc/IPCStreamUtils.h"
#include "mozilla/ipc/SendStream.h"

namespace mozilla {
namespace dom {
namespace cache {

using mozilla::ipc::FileDescriptorSetParent;
using mozilla::ipc::PBackgroundParent;
using mozilla::ipc::SendStreamParent;

CacheOpParent::CacheOpParent(PBackgroundParent* aIpcManager, CacheId aCacheId,
                             const CacheOpArgs& aOpArgs)
  : mIpcManager(aIpcManager)
  , mCacheId(aCacheId)
  , mNamespace(INVALID_NAMESPACE)
  , mOpArgs(aOpArgs)
{
  MOZ_DIAGNOSTIC_ASSERT(mIpcManager);
}

CacheOpParent::CacheOpParent(PBackgroundParent* aIpcManager,
                             Namespace aNamespace, const CacheOpArgs& aOpArgs)
  : mIpcManager(aIpcManager)
  , mCacheId(INVALID_CACHE_ID)
  , mNamespace(aNamespace)
  , mOpArgs(aOpArgs)
{
  MOZ_DIAGNOSTIC_ASSERT(mIpcManager);
}

CacheOpParent::~CacheOpParent()
{
  NS_ASSERT_OWNINGTHREAD(CacheOpParent);
}

void
CacheOpParent::Execute(ManagerId* aManagerId)
{
  NS_ASSERT_OWNINGTHREAD(CacheOpParent);
  MOZ_DIAGNOSTIC_ASSERT(!mManager);
  MOZ_DIAGNOSTIC_ASSERT(!mVerifier);

  RefPtr<cache::Manager> manager;
  nsresult rv = cache::Manager::GetOrCreate(aManagerId, getter_AddRefs(manager));
  if (NS_WARN_IF(NS_FAILED(rv))) {
    ErrorResult result(rv);
    Unused << Send__delete__(this, result, void_t());
    result.SuppressException();
    return;
  }

  Execute(manager);
}

void
CacheOpParent::Execute(cache::Manager* aManager)
{
  NS_ASSERT_OWNINGTHREAD(CacheOpParent);
  MOZ_DIAGNOSTIC_ASSERT(!mManager);
  MOZ_DIAGNOSTIC_ASSERT(!mVerifier);

  mManager = aManager;

  // Handle put op
  if (mOpArgs.type() == CacheOpArgs::TCachePutAllArgs) {
    MOZ_DIAGNOSTIC_ASSERT(mCacheId != INVALID_CACHE_ID);

    const CachePutAllArgs& args = mOpArgs.get_CachePutAllArgs();
    const nsTArray<CacheRequestResponse>& list = args.requestResponseList();

    AutoTArray<nsCOMPtr<nsIInputStream>, 256> requestStreamList;
    AutoTArray<nsCOMPtr<nsIInputStream>, 256> responseStreamList;

    for (uint32_t i = 0; i < list.Length(); ++i) {
      requestStreamList.AppendElement(
        DeserializeCacheStream(list[i].request().body()));
      responseStreamList.AppendElement(
        DeserializeCacheStream(list[i].response().body()));
    }

    mManager->ExecutePutAll(this, mCacheId, args.requestResponseList(),
                            requestStreamList, responseStreamList);
    return;
  }

  // Handle all other cache ops
  if (mCacheId != INVALID_CACHE_ID) {
    MOZ_DIAGNOSTIC_ASSERT(mNamespace == INVALID_NAMESPACE);
    mManager->ExecuteCacheOp(this, mCacheId, mOpArgs);
    return;
  }

  // Handle all storage ops
  MOZ_DIAGNOSTIC_ASSERT(mNamespace != INVALID_NAMESPACE);
  mManager->ExecuteStorageOp(this, mNamespace, mOpArgs);
}

void
CacheOpParent::WaitForVerification(PrincipalVerifier* aVerifier)
{
  NS_ASSERT_OWNINGTHREAD(CacheOpParent);
  MOZ_DIAGNOSTIC_ASSERT(!mManager);
  MOZ_DIAGNOSTIC_ASSERT(!mVerifier);

  mVerifier = aVerifier;
  mVerifier->AddListener(this);
}

void
CacheOpParent::ActorDestroy(ActorDestroyReason aReason)
{
  NS_ASSERT_OWNINGTHREAD(CacheOpParent);

  if (mVerifier) {
    mVerifier->RemoveListener(this);
    mVerifier = nullptr;
  }

  if (mManager) {
    mManager->RemoveListener(this);
    mManager = nullptr;
  }

  mIpcManager = nullptr;
}

void
CacheOpParent::OnPrincipalVerified(nsresult aRv, ManagerId* aManagerId)
{
  NS_ASSERT_OWNINGTHREAD(CacheOpParent);

  mVerifier->RemoveListener(this);
  mVerifier = nullptr;

  if (NS_WARN_IF(NS_FAILED(aRv))) {
    ErrorResult result(aRv);
    Unused << Send__delete__(this, result, void_t());
    result.SuppressException();
    return;
  }

  Execute(aManagerId);
}

void
CacheOpParent::OnOpComplete(ErrorResult&& aRv, const CacheOpResult& aResult,
                            CacheId aOpenedCacheId,
                            const nsTArray<SavedResponse>& aSavedResponseList,
                            const nsTArray<SavedRequest>& aSavedRequestList,
                            StreamList* aStreamList)
{
  NS_ASSERT_OWNINGTHREAD(CacheOpParent);
  MOZ_DIAGNOSTIC_ASSERT(mIpcManager);
  MOZ_DIAGNOSTIC_ASSERT(mManager);

  // Never send an op-specific result if we have an error.  Instead, send
  // void_t() to ensure that we don't leak actors on the child side.
  if (NS_WARN_IF(aRv.Failed())) {
    Unused << Send__delete__(this, aRv, void_t());
    aRv.SuppressException(); // We serialiazed it, as best we could.
    return;
  }

  uint32_t entryCount = std::max(1lu, static_cast<unsigned long>(
                                      std::max(aSavedResponseList.Length(),
                                               aSavedRequestList.Length())));

  // The result must contain the appropriate type at this point.  It may
  // or may not contain the additional result data yet.  For types that
  // do not need special processing, it should already be set.  If the
  // result requires actor-specific operations, then we do that below.
  // If the type and data types don't match, then we will trigger an
  // assertion in AutoParentOpResult::Add().
  AutoParentOpResult result(mIpcManager, aResult, entryCount);

  if (aOpenedCacheId != INVALID_CACHE_ID) {
    result.Add(aOpenedCacheId, mManager);
  }

  for (uint32_t i = 0; i < aSavedResponseList.Length(); ++i) {
    result.Add(aSavedResponseList[i], aStreamList);
  }

  for (uint32_t i = 0; i < aSavedRequestList.Length(); ++i) {
    result.Add(aSavedRequestList[i], aStreamList);
  }

  Unused << Send__delete__(this, aRv, result.SendAsOpResult());
}

already_AddRefed<nsIInputStream>
CacheOpParent::DeserializeCacheStream(const CacheReadStreamOrVoid& aStreamOrVoid)
{
  if (aStreamOrVoid.type() == CacheReadStreamOrVoid::Tvoid_t) {
    return nullptr;
  }

  nsCOMPtr<nsIInputStream> stream;
  const CacheReadStream& readStream = aStreamOrVoid.get_CacheReadStream();

  // Option 1: One of our own ReadStreams was passed back to us with a stream
  //           control actor.
  stream = ReadStream::Create(readStream);
  if (stream) {
    return stream.forget();
  }

  // Option 2: A stream was serialized using normal methods or passed
  //           as a PSendStream actor.  Use the standard method for
  //           extracting the resulting stream.
  return DeserializeIPCStream(readStream.stream());
}

} // namespace cache
} // namespace dom
} // namespace mozilla