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Diffstat (limited to 'Source/WebCore/fileapi/DOMFileSystemBase.cpp')
| -rw-r--r-- | Source/WebCore/fileapi/DOMFileSystemBase.cpp | 238 |
1 files changed, 238 insertions, 0 deletions
diff --git a/Source/WebCore/fileapi/DOMFileSystemBase.cpp b/Source/WebCore/fileapi/DOMFileSystemBase.cpp new file mode 100644 index 000000000..ec8ef725a --- /dev/null +++ b/Source/WebCore/fileapi/DOMFileSystemBase.cpp @@ -0,0 +1,238 @@ +/* + * Copyright (C) 2010 Google Inc. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following disclaimer + * in the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Google Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include "config.h" +#include "DOMFileSystemBase.h" + +#if ENABLE(FILE_SYSTEM) + +#include "DOMFilePath.h" +#include "DirectoryEntry.h" +#include "DirectoryReaderBase.h" +#include "EntriesCallback.h" +#include "EntryArray.h" +#include "EntryBase.h" +#include "EntryCallback.h" +#include "ErrorCallback.h" +#include "FileError.h" +#include "FileSystemCallbacks.h" +#include "MetadataCallback.h" +#include "ScriptExecutionContext.h" +#include "VoidCallback.h" +#include <wtf/OwnPtr.h> + +namespace WebCore { + +const char DOMFileSystemBase::kPersistentPathPrefix[] = "persistent"; +const size_t DOMFileSystemBase::kPersistentPathPrefixLength = sizeof(DOMFileSystemBase::kPersistentPathPrefix) - 1; +const char DOMFileSystemBase::kTemporaryPathPrefix[] = "temporary"; +const size_t DOMFileSystemBase::kTemporaryPathPrefixLength = sizeof(DOMFileSystemBase::kTemporaryPathPrefix) - 1; +const char DOMFileSystemBase::kExternalPathPrefix[] = "external"; +const size_t DOMFileSystemBase::kExternalPathPrefixLength = sizeof(DOMFileSystemBase::kExternalPathPrefix) - 1; + +bool DOMFileSystemBase::crackFileSystemURL(const KURL& url, AsyncFileSystem::Type& type, String& filePath) +{ + if (!url.protocolIs("filesystem")) + return false; + + KURL originURL(ParsedURLString, url.path()); + String path = decodeURLEscapeSequences(originURL.path()); + if (path.isEmpty() || path[0] != '/') + return false; + path = path.substring(1); + + if (path.startsWith(kTemporaryPathPrefix)) { + type = AsyncFileSystem::Temporary; + path = path.substring(kTemporaryPathPrefixLength); + } else if (path.startsWith(kPersistentPathPrefix)) { + type = AsyncFileSystem::Persistent; + path = path.substring(kPersistentPathPrefixLength); + } else if (path.startsWith(kExternalPathPrefix)) { + type = AsyncFileSystem::External; + path = path.substring(kExternalPathPrefixLength); + } else + return false; + + if (path.isEmpty() || path[0] != '/') + return false; + + filePath.swap(path); + return true; +} + +DOMFileSystemBase::DOMFileSystemBase(ScriptExecutionContext* context, const String& name, PassOwnPtr<AsyncFileSystem> asyncFileSystem) + : m_context(context) + , m_name(name) + , m_asyncFileSystem(asyncFileSystem) +{ +} + +DOMFileSystemBase::~DOMFileSystemBase() +{ +} + +SecurityOrigin* DOMFileSystemBase::securityOrigin() const +{ + return m_context->securityOrigin(); +} + +bool DOMFileSystemBase::getMetadata(const EntryBase* entry, PassRefPtr<MetadataCallback> successCallback, PassRefPtr<ErrorCallback> errorCallback) +{ + m_asyncFileSystem->readMetadata(entry->fullPath(), MetadataCallbacks::create(successCallback, errorCallback)); + return true; +} + +static bool verifyAndGetDestinationPathForCopyOrMove(const EntryBase* source, EntryBase* parent, const String& newName, String& destinationPath) +{ + ASSERT(source); + + if (!parent || !parent->isDirectory()) + return false; + + if (!newName.isEmpty() && !DOMFilePath::isValidName(newName)) + return false; + + // It is an error to try to copy or move an entry inside itself at any depth if it is a directory. + if (source->isDirectory() && DOMFilePath::isParentOf(source->fullPath(), parent->fullPath())) + return false; + + // It is an error to copy or move an entry into its parent if a name different from its current one isn't provided. + if ((newName.isEmpty() || source->name() == newName) && DOMFilePath::getDirectory(source->fullPath()) == parent->fullPath()) + return false; + + destinationPath = parent->fullPath(); + if (!newName.isEmpty()) + destinationPath = DOMFilePath::append(destinationPath, newName); + else + destinationPath = DOMFilePath::append(destinationPath, source->name()); + + return true; +} + +static bool pathToAbsolutePath(AsyncFileSystem::Type type, const EntryBase* base, String path, String& absolutePath) +{ + ASSERT(base); + + if (!DOMFilePath::isAbsolute(path)) + path = DOMFilePath::append(base->fullPath(), path); + absolutePath = DOMFilePath::removeExtraParentReferences(path); + + if ((type == AsyncFileSystem::Temporary || type == AsyncFileSystem::Persistent) && !DOMFilePath::isValidPath(absolutePath)) + return false; + return true; +} + +bool DOMFileSystemBase::move(const EntryBase* source, EntryBase* parent, const String& newName, PassRefPtr<EntryCallback> successCallback, PassRefPtr<ErrorCallback> errorCallback) +{ + String destinationPath; + if (!verifyAndGetDestinationPathForCopyOrMove(source, parent, newName, destinationPath)) + return false; + + m_asyncFileSystem->move(source->fullPath(), destinationPath, EntryCallbacks::create(successCallback, errorCallback, this, destinationPath, source->isDirectory())); + return true; +} + +bool DOMFileSystemBase::copy(const EntryBase* source, EntryBase* parent, const String& newName, PassRefPtr<EntryCallback> successCallback, PassRefPtr<ErrorCallback> errorCallback) +{ + String destinationPath; + if (!verifyAndGetDestinationPathForCopyOrMove(source, parent, newName, destinationPath)) + return false; + + m_asyncFileSystem->copy(source->fullPath(), destinationPath, EntryCallbacks::create(successCallback, errorCallback, this, destinationPath, source->isDirectory())); + return true; +} + +bool DOMFileSystemBase::remove(const EntryBase* entry, PassRefPtr<VoidCallback> successCallback, PassRefPtr<ErrorCallback> errorCallback) +{ + ASSERT(entry); + // We don't allow calling remove() on the root directory. + if (entry->fullPath() == String(DOMFilePath::root)) + return false; + m_asyncFileSystem->remove(entry->fullPath(), VoidCallbacks::create(successCallback, errorCallback)); + return true; +} + +bool DOMFileSystemBase::removeRecursively(const EntryBase* entry, PassRefPtr<VoidCallback> successCallback, PassRefPtr<ErrorCallback> errorCallback) +{ + ASSERT(entry && entry->isDirectory()); + // We don't allow calling remove() on the root directory. + if (entry->fullPath() == String(DOMFilePath::root)) + return false; + m_asyncFileSystem->removeRecursively(entry->fullPath(), VoidCallbacks::create(successCallback, errorCallback)); + return true; +} + +bool DOMFileSystemBase::getParent(const EntryBase* entry, PassRefPtr<EntryCallback> successCallback, PassRefPtr<ErrorCallback> errorCallback) +{ + ASSERT(entry); + String path = DOMFilePath::getDirectory(entry->fullPath()); + + m_asyncFileSystem->directoryExists(path, EntryCallbacks::create(successCallback, errorCallback, this, path, true)); + return true; +} + +bool DOMFileSystemBase::getFile(const EntryBase* entry, const String& path, PassRefPtr<WebKitFlags> flags, PassRefPtr<EntryCallback> successCallback, PassRefPtr<ErrorCallback> errorCallback) +{ + String absolutePath; + if (!pathToAbsolutePath(m_asyncFileSystem->type(), entry, path, absolutePath)) + return false; + + OwnPtr<EntryCallbacks> callbacks = EntryCallbacks::create(successCallback, errorCallback, this, absolutePath, false); + if (flags && flags->isCreate()) + m_asyncFileSystem->createFile(absolutePath, flags->isExclusive(), callbacks.release()); + else + m_asyncFileSystem->fileExists(absolutePath, callbacks.release()); + return true; +} + +bool DOMFileSystemBase::getDirectory(const EntryBase* entry, const String& path, PassRefPtr<WebKitFlags> flags, PassRefPtr<EntryCallback> successCallback, PassRefPtr<ErrorCallback> errorCallback) +{ + String absolutePath; + if (!pathToAbsolutePath(m_asyncFileSystem->type(), entry, path, absolutePath)) + return false; + + OwnPtr<EntryCallbacks> callbacks = EntryCallbacks::create(successCallback, errorCallback, this, absolutePath, true); + if (flags && flags->isCreate()) + m_asyncFileSystem->createDirectory(absolutePath, flags->isExclusive(), callbacks.release()); + else + m_asyncFileSystem->directoryExists(absolutePath, callbacks.release()); + return true; +} + +bool DOMFileSystemBase::readDirectory(PassRefPtr<DirectoryReaderBase> reader, const String& path, PassRefPtr<EntriesCallback> successCallback, PassRefPtr<ErrorCallback> errorCallback) +{ + ASSERT(DOMFilePath::isAbsolute(path)); + m_asyncFileSystem->readDirectory(path, EntriesCallbacks::create(successCallback, errorCallback, reader, path)); + return true; +} + +} // namespace WebCore + +#endif // ENABLE(FILE_SYSTEM) |