The Tor Browser / file comparison
comparison: dom/ipc/Blob.h
dom/ipc/Blob.h
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
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| -1:000000000000 | 0:7034e5387517 |
|---|---|
| 1 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 2 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 3 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 4 | |
| 5 #ifndef mozilla_dom_ipc_Blob_h | |
| 6 #define mozilla_dom_ipc_Blob_h | |
| 7 | |
| 8 #include "mozilla/Attributes.h" | |
| 9 #include "mozilla/dom/PBlobChild.h" | |
| 10 #include "mozilla/dom/PBlobParent.h" | |
| 11 #include "nsAutoPtr.h" | |
| 12 #include "nsTArray.h" | |
| 13 | |
| 14 class nsIDOMBlob; | |
| 15 class nsString; | |
| 16 template <class> class nsRevocableEventPtr; | |
| 17 | |
| 18 namespace mozilla { | |
| 19 namespace dom { | |
| 20 | |
| 21 class ContentChild; | |
| 22 class ContentParent; | |
| 23 class PBlobStreamChild; | |
| 24 class PBlobStreamParent; | |
| 25 | |
| 26 class BlobChild MOZ_FINAL | |
| 27 : public PBlobChild | |
| 28 { | |
| 29 friend class ContentChild; | |
| 30 | |
| 31 class RemoteBlob; | |
| 32 friend class RemoteBlob; | |
| 33 | |
| 34 nsIDOMBlob* mBlob; | |
| 35 RemoteBlob* mRemoteBlob; | |
| 36 nsRefPtr<ContentChild> mStrongManager; | |
| 37 | |
| 38 bool mOwnsBlob; | |
| 39 bool mBlobIsFile; | |
| 40 | |
| 41 public: | |
| 42 // This create function is called on the sending side. | |
| 43 static BlobChild* | |
| 44 Create(ContentChild* aManager, nsIDOMBlob* aBlob) | |
| 45 { | |
| 46 return new BlobChild(aManager, aBlob); | |
| 47 } | |
| 48 | |
| 49 // Get the blob associated with this actor. This may always be called on the | |
| 50 // sending side. It may also be called on the receiving side unless this is a | |
| 51 // "mystery" blob that has not yet received a SetMysteryBlobInfo() call. | |
| 52 already_AddRefed<nsIDOMBlob> | |
| 53 GetBlob(); | |
| 54 | |
| 55 // Use this for files. | |
| 56 bool | |
| 57 SetMysteryBlobInfo(const nsString& aName, | |
| 58 const nsString& aContentType, | |
| 59 uint64_t aLength, | |
| 60 uint64_t aLastModifiedDate); | |
| 61 | |
| 62 // Use this for non-file blobs. | |
| 63 bool | |
| 64 SetMysteryBlobInfo(const nsString& aContentType, uint64_t aLength); | |
| 65 | |
| 66 private: | |
| 67 // This constructor is called on the sending side. | |
| 68 BlobChild(ContentChild* aManager, nsIDOMBlob* aBlob); | |
| 69 | |
| 70 // This constructor is called on the receiving side. | |
| 71 BlobChild(ContentChild* aManager, const ChildBlobConstructorParams& aParams); | |
| 72 | |
| 73 // Only destroyed by ContentChild. | |
| 74 ~BlobChild(); | |
| 75 | |
| 76 // This create function is called on the receiving side by ContentChild. | |
| 77 static BlobChild* | |
| 78 Create(ContentChild* aManager, const ChildBlobConstructorParams& aParams); | |
| 79 | |
| 80 static already_AddRefed<RemoteBlob> | |
| 81 CreateRemoteBlob(const ChildBlobConstructorParams& aParams); | |
| 82 | |
| 83 void | |
| 84 NoteDyingRemoteBlob(); | |
| 85 | |
| 86 // These methods are only called by the IPDL message machinery. | |
| 87 virtual void | |
| 88 ActorDestroy(ActorDestroyReason aWhy) MOZ_OVERRIDE; | |
| 89 | |
| 90 virtual bool | |
| 91 RecvResolveMystery(const ResolveMysteryParams& aParams) MOZ_OVERRIDE; | |
| 92 | |
| 93 virtual PBlobStreamChild* | |
| 94 AllocPBlobStreamChild() MOZ_OVERRIDE; | |
| 95 | |
| 96 virtual bool | |
| 97 RecvPBlobStreamConstructor(PBlobStreamChild* aActor) MOZ_OVERRIDE; | |
| 98 | |
| 99 virtual bool | |
| 100 DeallocPBlobStreamChild(PBlobStreamChild* aActor) MOZ_OVERRIDE; | |
| 101 }; | |
| 102 | |
| 103 class BlobParent MOZ_FINAL | |
| 104 : public PBlobParent | |
| 105 { | |
| 106 friend class ContentParent; | |
| 107 | |
| 108 class OpenStreamRunnable; | |
| 109 friend class OpenStreamRunnable; | |
| 110 | |
| 111 class RemoteBlob; | |
| 112 friend class RemoteBlob; | |
| 113 | |
| 114 nsIDOMBlob* mBlob; | |
| 115 RemoteBlob* mRemoteBlob; | |
| 116 nsRefPtr<ContentParent> mStrongManager; | |
| 117 | |
| 118 // nsIInputStreams backed by files must ensure that the files are actually | |
| 119 // opened and closed on a background thread before we can send their file | |
| 120 // handles across to the child. The child process could crash during this | |
| 121 // process so we need to make sure we cancel the intended response in such a | |
| 122 // case. We do that by holding an array of nsRevocableEventPtr. If the child | |
| 123 // crashes then this actor will be destroyed and the nsRevocableEventPtr | |
| 124 // destructor will cancel any stream events that are currently in flight. | |
| 125 nsTArray<nsRevocableEventPtr<OpenStreamRunnable>> mOpenStreamRunnables; | |
| 126 | |
| 127 bool mOwnsBlob; | |
| 128 bool mBlobIsFile; | |
| 129 | |
| 130 public: | |
| 131 // This create function is called on the sending side. | |
| 132 static BlobParent* | |
| 133 Create(ContentParent* aManager, nsIDOMBlob* aBlob) | |
| 134 { | |
| 135 return new BlobParent(aManager, aBlob); | |
| 136 } | |
| 137 | |
| 138 // Get the blob associated with this actor. This may always be called on the | |
| 139 // sending side. It may also be called on the receiving side unless this is a | |
| 140 // "mystery" blob that has not yet received a SetMysteryBlobInfo() call. | |
| 141 already_AddRefed<nsIDOMBlob> | |
| 142 GetBlob(); | |
| 143 | |
| 144 // Use this for files. | |
| 145 bool | |
| 146 SetMysteryBlobInfo(const nsString& aName, const nsString& aContentType, | |
| 147 uint64_t aLength, uint64_t aLastModifiedDate); | |
| 148 | |
| 149 // Use this for non-file blobs. | |
| 150 bool | |
| 151 SetMysteryBlobInfo(const nsString& aContentType, uint64_t aLength); | |
| 152 | |
| 153 private: | |
| 154 // This constructor is called on the sending side. | |
| 155 BlobParent(ContentParent* aManager, nsIDOMBlob* aBlob); | |
| 156 | |
| 157 // This constructor is called on the receiving side. | |
| 158 BlobParent(ContentParent* aManager, | |
| 159 const ParentBlobConstructorParams& aParams); | |
| 160 | |
| 161 ~BlobParent(); | |
| 162 | |
| 163 // This create function is called on the receiving side by ContentParent. | |
| 164 static BlobParent* | |
| 165 Create(ContentParent* aManager, const ParentBlobConstructorParams& aParams); | |
| 166 | |
| 167 static already_AddRefed<RemoteBlob> | |
| 168 CreateRemoteBlob(const ParentBlobConstructorParams& aParams); | |
| 169 | |
| 170 void | |
| 171 NoteDyingRemoteBlob(); | |
| 172 | |
| 173 void | |
| 174 NoteRunnableCompleted(OpenStreamRunnable* aRunnable); | |
| 175 | |
| 176 // These methods are only called by the IPDL message machinery. | |
| 177 virtual void | |
| 178 ActorDestroy(ActorDestroyReason aWhy) MOZ_OVERRIDE; | |
| 179 | |
| 180 virtual PBlobStreamParent* | |
| 181 AllocPBlobStreamParent() MOZ_OVERRIDE; | |
| 182 | |
| 183 virtual bool | |
| 184 RecvPBlobStreamConstructor(PBlobStreamParent* aActor) MOZ_OVERRIDE; | |
| 185 | |
| 186 virtual bool | |
| 187 DeallocPBlobStreamParent(PBlobStreamParent* aActor) MOZ_OVERRIDE; | |
| 188 | |
| 189 virtual bool | |
| 190 RecvResolveMystery(const ResolveMysteryParams& aParams) MOZ_OVERRIDE; | |
| 191 }; | |
| 192 | |
| 193 } // namespace dom | |
| 194 } // namespace mozilla | |
| 195 | |
| 196 #endif // mozilla_dom_ipc_Blob_h |
