src/third_party/WebKit/Source/modules/filesystem/LocalFileSystem.cpp

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   9  * notice, this list of conditions and the following disclaimer.
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  11  * copyright notice, this list of conditions and the following disclaimer
  12  * in the documentation and/or other materials provided with the
  13  * distribution.
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  29  */
  30
  31 #include "config.h"
  32 #include "modules/filesystem/LocalFileSystem.h"
  33
  34 #include "core/dom/CrossThreadTask.h"
  35 #include "core/dom/Document.h"
  36 #include "core/dom/ExceptionCode.h"
  37 #include "core/dom/ExecutionContext.h"
  38 #include "core/fileapi/FileError.h"
  39 #include "core/frame/LocalFrame.h"
  40 #include "core/workers/WorkerGlobalScope.h"
  41 #include "modules/filesystem/FileSystemClient.h"
  42 #include "platform/AsyncFileSystemCallbacks.h"
  43 #include "platform/PermissionCallbacks.h"
  44 #include "public/platform/Platform.h"
  45 #include "public/platform/WebFileSystem.h"
  46 #include "wtf/Functional.h"
  47 #include "wtf/RefCounted.h"
  48
  49 namespace blink {
  50
  51 namespace {
  52
  53 void reportFailure(ExecutionContext*, PassOwnPtr<AsyncFileSystemCallbacks> callbacks, FileError::ErrorCode error)
  54 {
  55     callbacks->didFail(error);
  56 }
  57
  58 } // namespace
  59
  60 class CallbackWrapper FINAL : public GarbageCollectedFinalized<CallbackWrapper> {
  61 public:
  62     CallbackWrapper(PassOwnPtr<AsyncFileSystemCallbacks> c)
  63         : m_callbacks(c)
  64     {
  65     }
  66     virtual ~CallbackWrapper() { }
  67     PassOwnPtr<AsyncFileSystemCallbacks> release()
  68     {
  69         return m_callbacks.release();
  70     }
  71
  72     void trace(Visitor*) { }
  73
  74 private:
  75     OwnPtr<AsyncFileSystemCallbacks> m_callbacks;
  76 };
  77
  78 PassOwnPtrWillBeRawPtr<LocalFileSystem> LocalFileSystem::create(PassOwnPtr<FileSystemClient> client)
  79 {
  80     return adoptPtrWillBeNoop(new LocalFileSystem(client));
  81 }
  82
  83 LocalFileSystem::~LocalFileSystem()
  84 {
  85 }
  86
  87 void LocalFileSystem::resolveURL(ExecutionContext* context, const KURL& fileSystemURL, PassOwnPtr<AsyncFileSystemCallbacks> callbacks)
  88 {
  89     RefPtrWillBeRawPtr<ExecutionContext> contextPtr(context);
  90     CallbackWrapper* wrapper = new CallbackWrapper(callbacks);
  91     requestFileSystemAccessInternal(context,
  92         bind(&LocalFileSystem::resolveURLInternal, this, contextPtr, fileSystemURL, wrapper),
  93         bind(&LocalFileSystem::fileSystemNotAllowedInternal, this, contextPtr, wrapper));
  94 }
  95
  96 void LocalFileSystem::requestFileSystem(ExecutionContext* context, FileSystemType type, long long size, PassOwnPtr<AsyncFileSystemCallbacks> callbacks)
  97 {
  98     RefPtrWillBeRawPtr<ExecutionContext> contextPtr(context);
  99     CallbackWrapper* wrapper = new CallbackWrapper(callbacks);
 100     requestFileSystemAccessInternal(context,
 101         bind(&LocalFileSystem::fileSystemAllowedInternal, this, contextPtr, type, wrapper),
 102         bind(&LocalFileSystem::fileSystemNotAllowedInternal, this, contextPtr, wrapper));
 103 }
 104
 105 void LocalFileSystem::deleteFileSystem(ExecutionContext* context, FileSystemType type, PassOwnPtr<AsyncFileSystemCallbacks> callbacks)
 106 {
 107     RefPtrWillBeRawPtr<ExecutionContext> contextPtr(context);
 108     ASSERT(context);
 109     ASSERT_WITH_SECURITY_IMPLICATION(context->isDocument());
 110
 111     CallbackWrapper* wrapper = new CallbackWrapper(callbacks);
 112     requestFileSystemAccessInternal(context,
 113         bind(&LocalFileSystem::deleteFileSystemInternal, this, contextPtr, type, wrapper),
 114         bind(&LocalFileSystem::fileSystemNotAllowedInternal, this, contextPtr, wrapper));
 115 }
 116
 117 WebFileSystem* LocalFileSystem::fileSystem() const
 118 {
 119     Platform* platform = Platform::current();
 120     if (!platform)
 121         return nullptr;
 122     return Platform::current()->fileSystem();
 123 }
 124
 125 void LocalFileSystem::requestFileSystemAccessInternal(ExecutionContext* context, const Closure& allowed, const Closure& denied)
 126 {
 127     if (!client()) {
 128         denied();
 129         return;
 130     }
 131     if (!context->isDocument()) {
 132         if (!client()->requestFileSystemAccessSync(context)) {
 133             denied();
 134             return;
 135         }
 136         allowed();
 137         return;
 138     }
 139     client()->requestFileSystemAccessAsync(context, PermissionCallbacks::create(allowed, denied));
 140 }
 141
 142 void LocalFileSystem::fileSystemNotAvailable(
 143     PassRefPtrWillBeRawPtr<ExecutionContext> context,
 144     CallbackWrapper* callbacks)
 145 {
 146     context->postTask(createCrossThreadTask(&reportFailure, callbacks->release(), FileError::ABORT_ERR));
 147 }
 148
 149 void LocalFileSystem::fileSystemNotAllowedInternal(
 150     PassRefPtrWillBeRawPtr<ExecutionContext> context,
 151     CallbackWrapper* callbacks)
 152 {
 153     context->postTask(createCrossThreadTask(&reportFailure, callbacks->release(), FileError::ABORT_ERR));
 154 }
 155
 156 void LocalFileSystem::fileSystemAllowedInternal(
 157     PassRefPtrWillBeRawPtr<ExecutionContext> context,
 158     FileSystemType type,
 159     CallbackWrapper* callbacks)
 160 {
 161     if (!fileSystem()) {
 162         fileSystemNotAvailable(context, callbacks);
 163         return;
 164     }
 165
 166     KURL storagePartition = KURL(KURL(), context->securityOrigin()->toString());
 167     fileSystem()->openFileSystem(storagePartition, static_cast<WebFileSystemType>(type), callbacks->release());
 168 }
 169
 170 void LocalFileSystem::resolveURLInternal(
 171     PassRefPtrWillBeRawPtr<ExecutionContext> context,
 172     const KURL& fileSystemURL,
 173     CallbackWrapper* callbacks)
 174 {
 175     if (!fileSystem()) {
 176         fileSystemNotAvailable(context, callbacks);
 177         return;
 178     }
 179     fileSystem()->resolveURL(fileSystemURL, callbacks->release());
 180 }
 181
 182 void LocalFileSystem::deleteFileSystemInternal(
 183     PassRefPtrWillBeRawPtr<ExecutionContext> context,
 184     FileSystemType type,
 185     CallbackWrapper* callbacks)
 186 {
 187     if (!fileSystem()) {
 188         fileSystemNotAvailable(context, callbacks);
 189         return;
 190     }
 191     KURL storagePartition = KURL(KURL(), context->securityOrigin()->toString());
 192     fileSystem()->deleteFileSystem(storagePartition, static_cast<WebFileSystemType>(type), callbacks->release());
 193 }
 194
 195 LocalFileSystem::LocalFileSystem(PassOwnPtr<FileSystemClient> client)
 196     : m_client(client)
 197 {
 198 }
 199
 200 const char* LocalFileSystem::supplementName()
 201 {
 202     return "LocalFileSystem";
 203 }
 204
 205 LocalFileSystem* LocalFileSystem::from(ExecutionContext& context)
 206 {
 207     if (context.isDocument()) {
 208         return static_cast<LocalFileSystem*>(WillBeHeapSupplement<LocalFrame>::from(toDocument(context).frame(), supplementName()));
 209     }
 210     ASSERT(context.isWorkerGlobalScope());
 211     return static_cast<LocalFileSystem*>(WillBeHeapSupplement<WorkerClients>::from(toWorkerGlobalScope(context).clients(), supplementName()));
 212 }
 213
 214 void provideLocalFileSystemTo(LocalFrame& frame, PassOwnPtr<FileSystemClient> client)
 215 {
 216     frame.provideSupplement(LocalFileSystem::supplementName(), LocalFileSystem::create(client));
 217 }
 218
 219 void provideLocalFileSystemToWorker(WorkerClients* clients, PassOwnPtr<FileSystemClient> client)
 220 {
 221     clients->provideSupplement(LocalFileSystem::supplementName(), LocalFileSystem::create(client));
 222 }
 223
 224 } // namespace blink