mozilla
/
gecko-dev
зеркало из https://github.com/mozilla/gecko-dev.git
1
0
Форкнуть 0
Код Задачи Пакеты Проекты Релизы Вики Активность
gecko-dev/dom/devicestorage/nsDeviceStorage.cpp

1187 строки
31 KiB
C++
Исходник Ответственный История

/* 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 "nsDeviceStorage.h"
#include "DOMRequest.h"
#include "nsServiceManagerUtils.h"
#include "nsILocalFile.h"
#include "nsIDirectoryEnumerator.h"
#include "nsAppDirectoryServiceDefs.h"
#include "nsIDOMFile.h"
#include "nsDOMBlobBuilder.h"
#include "nsNetUtil.h"
#include "nsCycleCollectionParticipant.h"
#include "nsIContentPermissionPrompt.h"
#include "nsIPrincipal.h"
#include "mozilla/Preferences.h"
#include "nsJSUtils.h"
using namespace mozilla::dom;
#include "nsDirectoryServiceDefs.h"
class DeviceStorageFile : public nsISupports {
public:
DeviceStorageFile(nsIFile* aFile, const nsAString& aPath)
: mFile(aFile)
, mPath(aPath)
{
NS_ASSERTION(aFile, "Must not create a DeviceStorageFile with a null nsIFile");
NormalizeFilePath();
}
DeviceStorageFile(nsIFile* aFile)
: mFile(aFile)
{
NS_ASSERTION(aFile, "Must not create a DeviceStorageFile with a null nsIFile");
}
nsCOMPtr<nsIFile> mFile;
nsString mPath;
NS_DECL_ISUPPORTS
private:
void NormalizeFilePath() {
#if defined(XP_WIN)
PRUnichar* cur = mPath.BeginWriting();
PRUnichar* end = mPath.EndWriting();
for (; cur < end; ++cur) {
if (PRUnichar('\\') == *cur)
*cur = PRUnichar('/');
}
#endif
}
};
NS_IMPL_THREADSAFE_ISUPPORTS0(DeviceStorageFile)
// we want to make sure that the names of file can't reach
// outside of the type of storage the user asked for.
bool
isSafePath(const nsAString& aPath)
{
nsAString::const_iterator start, end;
aPath.BeginReading(start);
aPath.EndReading(end);
// if the path has a ~ or \ in it, return false.
NS_NAMED_LITERAL_STRING(tilde, "~");
NS_NAMED_LITERAL_STRING(bslash, "\\");
if (FindInReadable(tilde, start, end) ||
FindInReadable(bslash, start, end)) {
return false;
}
// split on /. if any token is "", ., or .., return false.
NS_ConvertUTF16toUTF8 cname(aPath);
char* buffer = cname.BeginWriting();
const char* token;
while ((token = nsCRT::strtok(buffer, "/", &buffer))) {
if (PL_strcmp(token, "") == 0 ||
PL_strcmp(token, ".") == 0 ||
PL_strcmp(token, "..") == 0 ) {
return false;
}
}
return true;
}
static void AppendRelativePath(nsIFile* file, const nsAString& aPath) {
#if defined(XP_WIN)
// replace forward slashes with backslashes,
// since nsLocalFileWin chokes on them
nsString temp;
temp.Assign(aPath);
PRUnichar* cur = temp.BeginWriting();
PRUnichar* end = temp.EndWriting();
for (; cur < end; ++cur) {
if (PRUnichar('/') == *cur)
*cur = PRUnichar('\\');
}
file->AppendRelativePath(temp);
#else
file->AppendRelativePath(aPath);
#endif
}
// TODO - eventually, we will want to factor this method
// out into different system specific subclasses (or
// something)
PRInt32
nsDOMDeviceStorage::SetRootFileForType(const nsAString& aType, const PRInt32 aIndex)
{
PRInt32 typeResult = DEVICE_STORAGE_TYPE_DEFAULT;
nsCOMPtr<nsILocalFile> f;
nsCOMPtr<nsIProperties> dirService = do_GetService(NS_DIRECTORY_SERVICE_CONTRACTID);
NS_ASSERTION(dirService, "Must have directory service");
// Picture directory
if (aType.Equals(NS_LITERAL_STRING("pictures"))) {
#ifdef MOZ_WIDGET_GONK
if (aIndex == 0) {
NS_NewLocalFile(NS_LITERAL_STRING("/data/pictures"), false, getter_AddRefs(f));
}
else if (aIndex == 1) {
NS_NewLocalFile(NS_LITERAL_STRING("/sdcard/DCIM"), false, getter_AddRefs(f));
typeResult = DEVICE_STORAGE_TYPE_EXTERNAL;
}
#elif defined (MOZ_WIDGET_COCOA)
if (aIndex == 0) {
dirService->Get(NS_OSX_PICTURE_DOCUMENTS_DIR, NS_GET_IID(nsILocalFile), getter_AddRefs(f));
}
#elif defined (XP_UNIX)
if (aIndex == 0) {
dirService->Get(NS_UNIX_XDG_PICTURES_DIR, NS_GET_IID(nsILocalFile), getter_AddRefs(f));
}
#endif
}
// in testing, we have access to a few more directory locations
if (mozilla::Preferences::GetBool("device.storage.testing", false)) {
// Temp directory
if (aType.Equals(NS_LITERAL_STRING("temp")) && aIndex == 0) {
dirService->Get(NS_OS_TEMP_DIR, NS_GET_IID(nsILocalFile), getter_AddRefs(f));
}
// Profile directory
else if (aType.Equals(NS_LITERAL_STRING("profile")) && aIndex == 0) {
dirService->Get(NS_APP_USER_PROFILE_50_DIR, NS_GET_IID(nsILocalFile), getter_AddRefs(f));
}
}
mFile = f;
return typeResult;
}
static jsval nsIFileToJsval(nsPIDOMWindow* aWindow, DeviceStorageFile* aFile, bool aEditable)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
NS_ASSERTION(aWindow, "Null Window");
if (aEditable) {
// TODO - needs janv's file handle support.
return JSVAL_NULL;
}
if (aFile == nsnull) {
return JSVAL_NULL;
}
nsCOMPtr<nsIDOMBlob> blob = new nsDOMFileFile(aFile->mFile, aFile->mPath);
nsCOMPtr<nsIScriptGlobalObject> sgo = do_QueryInterface(aWindow);
if (!sgo) {
return JSVAL_NULL;
}
nsIScriptContext *scriptContext = sgo->GetScriptContext();
if (!scriptContext) {
return JSVAL_NULL;
}
JSContext *cx = scriptContext->GetNativeContext();
if (!cx) {
return JSVAL_NULL;
}
jsval wrappedFile;
nsresult rv = nsContentUtils::WrapNative(cx,
JS_GetGlobalObject(cx),
blob,
&NS_GET_IID(nsIDOMFile),
&wrappedFile);
if (NS_FAILED(rv)) {
return JSVAL_NULL;
}
return wrappedFile;
}
static jsval StringToJsval(nsPIDOMWindow* aWindow, nsAString& aString)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
NS_ASSERTION(aWindow, "Null Window");
nsCOMPtr<nsIScriptGlobalObject> sgo = do_QueryInterface(aWindow);
if (!sgo) {
return JSVAL_NULL;
}
nsIScriptContext *scriptContext = sgo->GetScriptContext();
if (!scriptContext) {
return JSVAL_NULL;
}
JSContext *cx = scriptContext->GetNativeContext();
if (!cx) {
return JSVAL_NULL;
}
JSAutoRequest ar(cx);
jsval result = JSVAL_NULL;
if (!xpc::StringToJsval(cx, aString, &result)) {
return JSVAL_NULL;
}
return result;
}
class nsDOMDeviceStorageCursor
: public nsIDOMDeviceStorageCursor
, public DOMRequest
, public nsIContentPermissionRequest
{
public:
NS_DECL_ISUPPORTS_INHERITED
NS_DECL_NSICONTENTPERMISSIONREQUEST
NS_DECL_NSIDOMDEVICESTORAGECURSOR
nsDOMDeviceStorageCursor(nsIDOMWindow* aWindow,
nsIURI* aURI,
DeviceStorageFile* aFile,
bool aEditable);
private:
~nsDOMDeviceStorageCursor();
protected:
nsTArray<nsRefPtr<DeviceStorageFile> > mFiles;
bool mOkToCallContinue;
nsRefPtr<DeviceStorageFile> mFile;
nsCOMPtr<nsIURI> mURI;
bool mEditable;
// to access mFiles
friend class InitCursorEvent;
friend class ContinueCursorEvent;
};
#define POST_ERROR_EVENT_FILE_DOES_NOT_EXIST "File location doesn't exists"
#define POST_ERROR_EVENT_FILE_NOT_ENUMERABLE "File location is not enumerable"
#define POST_ERROR_EVENT_PERMISSION_DENIED "Permission Denied"
#define POST_ERROR_EVENT_ILLEGAL_FILE_NAME "Illegal file name"
#define POST_ERROR_EVENT_UNKNOWN "Unknown"
#define POST_ERROR_EVENT_NON_STRING_TYPE_UNSUPPORTED "Non-string type unsupported"
class PostErrorEvent : public nsRunnable
{
public:
PostErrorEvent(nsRefPtr<DOMRequest>& aRequest, const char* aMessage, DeviceStorageFile* aFile)
{
mRequest.swap(aRequest);
BuildErrorString(aMessage, aFile);
}
PostErrorEvent(DOMRequest* aRequest, const char* aMessage, DeviceStorageFile* aFile)
: mRequest(aRequest)
{
BuildErrorString(aMessage, aFile);
}
~PostErrorEvent() {}
void BuildErrorString(const char* aMessage, DeviceStorageFile* aFile)
{
nsAutoString fullPath;
if (aFile && aFile->mFile) {
aFile->mFile->GetPath(fullPath);
}
else {
fullPath.Assign(NS_LITERAL_STRING("null file"));
}
mError = NS_ConvertASCIItoUTF16(aMessage);
mError.Append(NS_LITERAL_STRING(" file path = "));
mError.Append(fullPath.get());
mError.Append(NS_LITERAL_STRING(" path = "));
if (aFile) {
mError.Append(aFile->mPath);
}
else {
mError.Append(NS_LITERAL_STRING("null path"));
}
}
NS_IMETHOD Run() {
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
mRequest->FireError(mError);
mRequest = nsnull;
return NS_OK;
}
private:
nsRefPtr<DOMRequest> mRequest;
nsString mError;
};
class ContinueCursorEvent : public nsRunnable
{
public:
ContinueCursorEvent(nsRefPtr<DOMRequest>& aRequest)
{
mRequest.swap(aRequest);
}
ContinueCursorEvent(DOMRequest* aRequest)
: mRequest(aRequest)
{
}
~ContinueCursorEvent() {}
NS_IMETHOD Run() {
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
jsval val;
nsDOMDeviceStorageCursor* cursor = static_cast<nsDOMDeviceStorageCursor*>(mRequest.get());
if (cursor->mFiles.Length() == 0) {
val = JSVAL_NULL;
}
else {
nsRefPtr<DeviceStorageFile> file = cursor->mFiles[0];
cursor->mFiles.RemoveElementAt(0);
val = nsIFileToJsval(cursor->GetOwner(), file, cursor->mEditable);
cursor->mOkToCallContinue = true;
}
mRequest->FireSuccess(val);
mRequest = nsnull;
return NS_OK;
}
private:
nsRefPtr<DOMRequest> mRequest;
};
class InitCursorEvent : public nsRunnable
{
public:
InitCursorEvent(DOMRequest* aRequest, DeviceStorageFile* aFile)
: mFile(aFile)
, mRequest(aRequest)
{
}
~InitCursorEvent() {}
NS_IMETHOD Run() {
NS_ASSERTION(!NS_IsMainThread(), "Wrong thread!");
bool check;
mFile->mFile->IsDirectory(&check);
if (!check) {
nsCOMPtr<PostErrorEvent> event = new PostErrorEvent(mRequest,
POST_ERROR_EVENT_FILE_NOT_ENUMERABLE,
mFile);
NS_DispatchToMainThread(event);
return NS_OK;
}
nsString fullpath;
mFile->mFile->GetPath(fullpath);
collectFiles(fullpath, mFile);
nsCOMPtr<ContinueCursorEvent> event = new ContinueCursorEvent(mRequest);
NS_DispatchToMainThread(event);
return NS_OK;
}
void collectFiles(const nsString& aInitialFullPath, DeviceStorageFile* aFile)
{
// TODO - we may want to do this incrementally.
if (!aFile)
return;
nsCOMPtr<nsISimpleEnumerator> e;
aFile->mFile->GetDirectoryEntries(getter_AddRefs(e));
nsCOMPtr<nsIDirectoryEnumerator> files = do_QueryInterface(e);
nsCOMPtr<nsIFile> f;
while (NS_SUCCEEDED(files->GetNextFile(getter_AddRefs(f))) && f) {
bool isDir;
f->IsDirectory(&isDir);
bool isFile;
f->IsFile(&isFile);
nsString fullpath;
f->GetPath(fullpath);
nsAString::size_type len = aInitialFullPath.Length() + 1; // +1 for the trailing /
nsDependentSubstring newPath = Substring(fullpath, len);
if (!StringBeginsWith(fullpath, aInitialFullPath)) {
NS_WARNING("collectFiles returned a path that does not belong!");
continue;
}
nsRefPtr<DeviceStorageFile> dsf = new DeviceStorageFile(f, newPath);
if (isDir) {
collectFiles(aInitialFullPath, dsf);
}
else if (isFile) {
nsDOMDeviceStorageCursor* cursor = static_cast<nsDOMDeviceStorageCursor*>(mRequest.get());
cursor->mFiles.AppendElement(dsf);
}
}
}
private:
nsRefPtr<DeviceStorageFile> mFile;
nsRefPtr<DOMRequest> mRequest;
};
DOMCI_DATA(DeviceStorageCursor, nsDOMDeviceStorageCursor)
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(nsDOMDeviceStorageCursor)
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIDOMDeviceStorageCursor)
NS_INTERFACE_MAP_ENTRY(nsIDOMDeviceStorageCursor)
NS_INTERFACE_MAP_ENTRY(nsIContentPermissionRequest)
NS_INTERFACE_MAP_ENTRY(nsIDOMDOMRequest)
NS_DOM_INTERFACE_MAP_ENTRY_CLASSINFO(DeviceStorageCursor)
NS_INTERFACE_MAP_END_INHERITING(DOMRequest)
NS_IMPL_ADDREF_INHERITED(nsDOMDeviceStorageCursor, DOMRequest)
NS_IMPL_RELEASE_INHERITED(nsDOMDeviceStorageCursor, DOMRequest)
nsDOMDeviceStorageCursor::nsDOMDeviceStorageCursor(nsIDOMWindow* aWindow,
nsIURI* aURI,
DeviceStorageFile* aFile,
bool aEditable)
: DOMRequest(aWindow)
, mOkToCallContinue(false)
, mFile(aFile)
, mURI(aURI)
, mEditable(aEditable)
{
if (mozilla::Preferences::GetBool("device.storage.prompt.testing", false)) {
Allow();
return;
}
nsCOMPtr<nsIContentPermissionPrompt> prompt = do_GetService(NS_CONTENT_PERMISSION_PROMPT_CONTRACTID);
if (prompt) {
prompt->Prompt(this);
}
}
nsDOMDeviceStorageCursor::~nsDOMDeviceStorageCursor()
{
}
NS_IMETHODIMP
nsDOMDeviceStorageCursor::GetType(nsACString & aType)
{
aType = "device-storage";
return NS_OK;
}
NS_IMETHODIMP
nsDOMDeviceStorageCursor::GetUri(nsIURI * *aRequestingURI)
{
mURI.forget(aRequestingURI);
return NS_OK;
}
NS_IMETHODIMP
nsDOMDeviceStorageCursor::GetWindow(nsIDOMWindow * *aRequestingWindow)
{
NS_IF_ADDREF(*aRequestingWindow = GetOwner());
return NS_OK;
}
NS_IMETHODIMP
nsDOMDeviceStorageCursor::GetElement(nsIDOMElement * *aRequestingElement)
{
*aRequestingElement = nsnull;
return NS_OK;
}
NS_IMETHODIMP
nsDOMDeviceStorageCursor::Cancel()
{
nsCOMPtr<PostErrorEvent> event = new PostErrorEvent(this,
POST_ERROR_EVENT_PERMISSION_DENIED,
mFile);
NS_DispatchToMainThread(event);
return NS_OK;
}
NS_IMETHODIMP
nsDOMDeviceStorageCursor::Allow()
{
if (!isSafePath(mFile->mPath)) {
nsCOMPtr<nsIRunnable> r = new PostErrorEvent(this,
POST_ERROR_EVENT_ILLEGAL_FILE_NAME,
mFile);
NS_DispatchToMainThread(r);
return NS_OK;
}
AppendRelativePath(mFile->mFile, mFile->mPath);
nsCOMPtr<nsIEventTarget> target = do_GetService(NS_STREAMTRANSPORTSERVICE_CONTRACTID);
NS_ASSERTION(target, "Must have stream transport service");
nsCOMPtr<InitCursorEvent> event = new InitCursorEvent(this, mFile);
target->Dispatch(event, NS_DISPATCH_NORMAL);
return NS_OK;
}
NS_IMETHODIMP
nsDOMDeviceStorageCursor::Continue()
{
if (!mOkToCallContinue) {
return NS_ERROR_UNEXPECTED;
}
if (mRooted) {
// We call onsuccess multiple times. clear the last
// rooted result.
NS_DROP_JS_OBJECTS(this, nsDOMDeviceStorageCursor);
mResult = JSVAL_VOID;
mDone = false;
mRooted = false;
}
nsCOMPtr<ContinueCursorEvent> event = new ContinueCursorEvent(this);
NS_DispatchToMainThread(event);
mOkToCallContinue = false;
return NS_OK;
}
class PostResultEvent : public nsRunnable
{
public:
PostResultEvent(nsRefPtr<DOMRequest>& aRequest, bool aEditable, DeviceStorageFile* aFile)
: mEditable(aEditable)
, mFile(aFile)
{
mRequest.swap(aRequest);
}
PostResultEvent(nsRefPtr<DOMRequest>& aRequest, const nsAString & aPath)
: mPath(aPath)
{
mRequest.swap(aRequest);
}
~PostResultEvent() {}
NS_IMETHOD Run()
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
jsval result = JSVAL_NULL;
if (mFile) {
result = nsIFileToJsval(mRequest->GetOwner(), mFile, mEditable);
} else {
result = StringToJsval(mRequest->GetOwner(), mPath);
}
mRequest->FireSuccess(result);
mRequest = nsnull;
return NS_OK;
}
private:
bool mEditable;
nsRefPtr<DeviceStorageFile> mFile;
nsString mPath;
nsRefPtr<DOMRequest> mRequest;
};
class WriteFileEvent : public nsRunnable
{
public:
WriteFileEvent(nsIDOMBlob *aBlob,
DeviceStorageFile *aFile,
nsRefPtr<DOMRequest>& aRequest)
: mBlob(aBlob)
, mFile(aFile)
{
mRequest.swap(aRequest);
}
~WriteFileEvent() {}
void CleanupOnFail(const char* error)
{
if (mFile) {
mFile->mFile->Remove(false);
}
nsCOMPtr<PostErrorEvent> event = new PostErrorEvent(mRequest,
error,
mFile);
NS_DispatchToMainThread(event);
}
NS_IMETHOD Run()
{
NS_ASSERTION(!NS_IsMainThread(), "Wrong thread!");
//TODO - this might be faster if we check to see if
//these are backed by OS-files, and if so, then just do
//a copy()
nsCOMPtr<nsIFile> f = mFile->mFile;
// This also creates all ancestors
nsresult rv = f->Create(nsIFile::NORMAL_FILE_TYPE, 00600);
if (NS_FAILED(rv)) {
CleanupOnFail(POST_ERROR_EVENT_UNKNOWN " 1 ");
return NS_OK;
}
nsCOMPtr<nsIInputStream> stream;
mBlob->GetInternalStream(getter_AddRefs(stream));
if (!stream) {
CleanupOnFail(POST_ERROR_EVENT_UNKNOWN " 2 ");
return NS_OK;
}
PRUint32 bufSize;
stream->Available(&bufSize);
nsCOMPtr<nsIOutputStream> outputStream;
NS_NewLocalFileOutputStream(getter_AddRefs(outputStream), f);
if (!outputStream) {
CleanupOnFail(POST_ERROR_EVENT_UNKNOWN " 3 ");
return NS_OK;
}
nsCOMPtr<nsIOutputStream> bufferedOutputStream;
NS_NewBufferedOutputStream(getter_AddRefs(bufferedOutputStream),
outputStream,
4096*4);
if (!bufferedOutputStream) {
CleanupOnFail(POST_ERROR_EVENT_UNKNOWN " 4" );
return NS_OK;
}
PRUint32 wrote;
bufferedOutputStream->WriteFrom(stream, bufSize, &wrote);
bufferedOutputStream->Close();
outputStream->Close();
if (bufSize != wrote) {
CleanupOnFail(POST_ERROR_EVENT_UNKNOWN " 5 " );
return NS_OK;
}
nsCOMPtr<PostResultEvent> event = new PostResultEvent(mRequest, mFile->mPath);
NS_DispatchToMainThread(event);
return NS_OK;
}
private:
nsCOMPtr<nsIDOMBlob> mBlob;
nsRefPtr<DeviceStorageFile> mFile;
nsRefPtr<DOMRequest> mRequest;
};
class ReadFileEvent : public nsRunnable
{
public:
ReadFileEvent(DeviceStorageFile* aFile,
bool aEditable,
nsRefPtr<DOMRequest>& aRequest)
: mFile(aFile)
, mEditable(aEditable)
{
mRequest.swap(aRequest);
}
~ReadFileEvent() {}
NS_IMETHOD Run()
{
NS_ASSERTION(!NS_IsMainThread(), "Wrong thread!");
nsRefPtr<nsRunnable> r;
if (!mEditable) {
bool check = false;
mFile->mFile->Exists(&check);
if (!check) {
r = new PostErrorEvent(mRequest, POST_ERROR_EVENT_FILE_DOES_NOT_EXIST, mFile);
}
}
if (!r) {
r = new PostResultEvent(mRequest, mEditable, mFile);
}
NS_DispatchToMainThread(r);
return NS_OK;
}
private:
nsRefPtr<DeviceStorageFile> mFile;
bool mEditable;
nsRefPtr<DOMRequest> mRequest;
};
class DeleteFileEvent : public nsRunnable
{
public:
DeleteFileEvent(DeviceStorageFile* aFile,
nsRefPtr<DOMRequest>& aRequest)
: mFile(aFile)
{
mRequest.swap(aRequest);
}
~DeleteFileEvent() {}
NS_IMETHOD Run()
{
NS_ASSERTION(!NS_IsMainThread(), "Wrong thread!");
mFile->mFile->Remove(true);
nsCOMPtr<PostResultEvent> event = new PostResultEvent(mRequest, mFile->mPath);
NS_DispatchToMainThread(event);
return NS_OK;
}
private:
nsRefPtr<DeviceStorageFile> mFile;
nsRefPtr<DOMRequest> mRequest;
};
class DeviceStorageRequest : public nsIContentPermissionRequest, public nsIRunnable
{
public:
enum {
DEVICE_STORAGE_REQUEST_READ,
DEVICE_STORAGE_REQUEST_WRITE,
DEVICE_STORAGE_REQUEST_DELETE
};
DeviceStorageRequest(const PRInt32 aRequestType,
nsPIDOMWindow *aWindow,
nsIURI *aURI,
DeviceStorageFile *aFile,
DOMRequest* aRequest,
bool aEditable,
nsIDOMBlob *aBlob = nsnull)
: mRequestType(aRequestType)
, mWindow(aWindow)
, mURI(aURI)
, mFile(aFile)
, mRequest(aRequest)
, mEditable(aEditable)
, mBlob(aBlob) {}
NS_DECL_CYCLE_COLLECTING_ISUPPORTS
NS_DECL_CYCLE_COLLECTION_CLASS_AMBIGUOUS(DeviceStorageRequest, nsIContentPermissionRequest)
NS_IMETHOD Run() {
if (mozilla::Preferences::GetBool("device.storage.prompt.testing", false)) {
Allow();
return NS_OK;
}
nsCOMPtr<nsIContentPermissionPrompt> prompt = do_GetService(NS_CONTENT_PERMISSION_PROMPT_CONTRACTID);
if (prompt) {
prompt->Prompt(this);
}
return NS_OK;
}
NS_IMETHOD GetType(nsACString & aType)
{
aType = "device-storage";
return NS_OK;
}
NS_IMETHOD GetUri(nsIURI * *aRequestingURI)
{
NS_ADDREF(*aRequestingURI = mURI);
return NS_OK;
}
NS_IMETHOD GetWindow(nsIDOMWindow * *aRequestingWindow)
{
NS_IF_ADDREF(*aRequestingWindow = mWindow);
return NS_OK;
}
NS_IMETHOD GetElement(nsIDOMElement * *aRequestingElement)
{
*aRequestingElement = nsnull;
return NS_OK;
}
NS_IMETHOD Cancel()
{
nsCOMPtr<PostErrorEvent> event = new PostErrorEvent(mRequest,
POST_ERROR_EVENT_PERMISSION_DENIED,
mFile);
NS_DispatchToMainThread(event);
return NS_OK;
}
NS_IMETHOD Allow()
{
nsCOMPtr<nsIRunnable> r;
if (!mRequest) {
return NS_ERROR_FAILURE;
}
switch(mRequestType) {
case DEVICE_STORAGE_REQUEST_WRITE:
{
if (!mBlob) {
return NS_ERROR_FAILURE;
}
r = new WriteFileEvent(mBlob, mFile, mRequest);
break;
}
case DEVICE_STORAGE_REQUEST_READ:
{
r = new ReadFileEvent(mFile, mEditable, mRequest);
break;
}
case DEVICE_STORAGE_REQUEST_DELETE:
{
r = new DeleteFileEvent(mFile, mRequest);
break;
}
}
if (r) {
nsCOMPtr<nsIEventTarget> target = do_GetService(NS_STREAMTRANSPORTSERVICE_CONTRACTID);
NS_ASSERTION(target, "Must have stream transport service");
target->Dispatch(r, NS_DISPATCH_NORMAL);
}
return NS_OK;
}
private:
PRInt32 mRequestType;
nsCOMPtr<nsPIDOMWindow> mWindow;
nsCOMPtr<nsIURI> mURI;
nsRefPtr<DeviceStorageFile> mFile;
nsRefPtr<DOMRequest> mRequest;
bool mEditable;
nsCOMPtr<nsIDOMBlob> mBlob;
};
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(DeviceStorageRequest)
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIContentPermissionRequest)
NS_INTERFACE_MAP_ENTRY(nsIContentPermissionRequest)
NS_INTERFACE_MAP_ENTRY(nsIRunnable)
NS_INTERFACE_MAP_END
NS_IMPL_CYCLE_COLLECTING_ADDREF(DeviceStorageRequest)
NS_IMPL_CYCLE_COLLECTING_RELEASE(DeviceStorageRequest)
NS_IMPL_CYCLE_COLLECTION_CLASS(DeviceStorageRequest)
NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(DeviceStorageRequest)
NS_IMPL_CYCLE_COLLECTION_UNLINK_NSCOMPTR(mRequest)
NS_IMPL_CYCLE_COLLECTION_UNLINK_NSCOMPTR(mWindow)
NS_IMPL_CYCLE_COLLECTION_UNLINK_NSCOMPTR(mBlob)
NS_IMPL_CYCLE_COLLECTION_UNLINK_END
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(DeviceStorageRequest)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_NSCOMPTR_AMBIGUOUS(mRequest, nsIDOMDOMRequest)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_NSCOMPTR_AMBIGUOUS(mWindow, nsPIDOMWindow)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_NSCOMPTR_AMBIGUOUS(mBlob, nsIDOMBlob)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
DOMCI_DATA(DeviceStorage, nsDOMDeviceStorage)
NS_INTERFACE_MAP_BEGIN(nsDOMDeviceStorage)
NS_INTERFACE_MAP_ENTRY(nsIDOMDeviceStorage)
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIDOMDeviceStorage)
NS_DOM_INTERFACE_MAP_ENTRY_CLASSINFO(DeviceStorage)
NS_INTERFACE_MAP_END
NS_IMPL_THREADSAFE_ADDREF(nsDOMDeviceStorage)
NS_IMPL_THREADSAFE_RELEASE(nsDOMDeviceStorage)
nsDOMDeviceStorage::nsDOMDeviceStorage()
: mStorageType(DEVICE_STORAGE_TYPE_DEFAULT)
{
}
nsresult
nsDOMDeviceStorage::Init(nsPIDOMWindow* aWindow, const nsAString &aType, const PRInt32 aIndex)
{
NS_ASSERTION(aWindow, "Must have a content dom");
mStorageType = SetRootFileForType(aType, aIndex);
if (!mFile) {
return NS_ERROR_NOT_AVAILABLE;
}
mOwner = do_GetWeakReference(aWindow);
if (!mOwner) {
return NS_ERROR_FAILURE;
}
// Grab the uri of the document
nsCOMPtr<nsIDOMDocument> domdoc;
aWindow->GetDocument(getter_AddRefs(domdoc));
nsCOMPtr<nsIDocument> doc = do_QueryInterface(domdoc);
if (!doc) {
return NS_ERROR_FAILURE;
}
doc->NodePrincipal()->GetURI(getter_AddRefs(mURI));
return NS_OK;
}
nsDOMDeviceStorage::~nsDOMDeviceStorage()
{
}
void
nsDOMDeviceStorage::CreateDeviceStoragesFor(nsPIDOMWindow* aWin,
const nsAString &aType,
nsIVariant** _retval)
{
nsTArray<nsRefPtr<nsIDOMDeviceStorage> > stores;
PRInt32 index = 0;
while (1) {
nsresult rv;
nsRefPtr<nsDOMDeviceStorage> storage = new nsDOMDeviceStorage();
rv = storage->Init(aWin, aType, index++);
if (NS_FAILED(rv))
break;
stores.AppendElement(storage);
}
nsCOMPtr<nsIWritableVariant> result = do_CreateInstance("@mozilla.org/variant;1");
if (!result) {
return;
}
result->SetAsArray(nsIDataType::VTYPE_INTERFACE,
&NS_GET_IID(nsIDOMDeviceStorage),
stores.Length(),
const_cast<void*>(static_cast<const void*>(stores.Elements())));
NS_ADDREF(*_retval = result);
}
NS_IMETHODIMP
nsDOMDeviceStorage::GetType(nsAString & aType)
{
switch(mStorageType) {
case DEVICE_STORAGE_TYPE_EXTERNAL:
aType.AssignLiteral("external");
break;
case DEVICE_STORAGE_TYPE_SHARED:
aType.AssignLiteral("shared");
break;
case DEVICE_STORAGE_TYPE_DEFAULT:
default:
aType.AssignLiteral("default");
break;
}
return NS_OK;
}
NS_IMETHODIMP
nsDOMDeviceStorage::Add(nsIDOMBlob *aBlob, nsIDOMDOMRequest * *_retval NS_OUTPARAM)
{
char buffer[128];
NS_MakeRandomString(buffer, 128);
nsString path;
path.AssignWithConversion(nsDependentCString(buffer));
return AddNamed(aBlob, path, _retval);
}
NS_IMETHODIMP
nsDOMDeviceStorage::AddNamed(nsIDOMBlob *aBlob,
const nsAString & aPath,
nsIDOMDOMRequest * *_retval NS_OUTPARAM)
{
// if the blob is null here, bail
if (aBlob == nsnull)
return NS_OK;
nsCOMPtr<nsPIDOMWindow> win = do_QueryReferent(mOwner);
if (!win) {
return NS_ERROR_UNEXPECTED;
}
nsRefPtr<DOMRequest> request = new DOMRequest(win);
NS_ADDREF(*_retval = request);
nsCOMPtr<nsIRunnable> r;
nsCOMPtr<nsIFile> file;
mFile->Clone(getter_AddRefs(file));
AppendRelativePath(file, aPath);
nsRefPtr<DeviceStorageFile> dsf = new DeviceStorageFile(file, aPath);
if (!isSafePath(aPath)) {
r = new PostErrorEvent(request, POST_ERROR_EVENT_ILLEGAL_FILE_NAME, dsf);
}
else {
r = new DeviceStorageRequest(DeviceStorageRequest::DEVICE_STORAGE_REQUEST_WRITE,
win, mURI, dsf, request, true, aBlob);
}
NS_DispatchToMainThread(r);
return NS_OK;
}
NS_IMETHODIMP
nsDOMDeviceStorage::Get(const JS::Value & aPath,
JSContext* aCx,
nsIDOMDOMRequest * *_retval NS_OUTPARAM)
{
return GetInternal(aPath, aCx, _retval, false);
}
NS_IMETHODIMP
nsDOMDeviceStorage::GetEditable(const JS::Value & aPath,
JSContext* aCx,
nsIDOMDOMRequest * *_retval NS_OUTPARAM)
{
return GetInternal(aPath, aCx, _retval, true);
}
nsresult
nsDOMDeviceStorage::GetInternal(const JS::Value & aPath,
JSContext* aCx,
nsIDOMDOMRequest * *_retval NS_OUTPARAM,
bool aEditable)
{
nsCOMPtr<nsPIDOMWindow> win = do_QueryReferent(mOwner);
if (!win) {
return NS_ERROR_UNEXPECTED;
}
nsRefPtr<DOMRequest> request = new DOMRequest(win);
NS_ADDREF(*_retval = request);
nsCOMPtr<nsIRunnable> r;
JSString* jsstr = JS_ValueToString(aCx, aPath);
nsDependentJSString path;
if (!path.init(aCx, jsstr)) {
nsRefPtr<DeviceStorageFile> dsf = new DeviceStorageFile(mFile);
r = new PostErrorEvent(request,
POST_ERROR_EVENT_NON_STRING_TYPE_UNSUPPORTED,
dsf);
} else if (!isSafePath(path)) {
nsRefPtr<DeviceStorageFile> dsf = new DeviceStorageFile(mFile, path);
r = new PostErrorEvent(request, POST_ERROR_EVENT_ILLEGAL_FILE_NAME, dsf);
} else {
nsCOMPtr<nsIFile> file;
mFile->Clone(getter_AddRefs(file));
AppendRelativePath(file, path);
nsRefPtr<DeviceStorageFile> dsf = new DeviceStorageFile(file, path);
r = new DeviceStorageRequest(DeviceStorageRequest::DEVICE_STORAGE_REQUEST_READ,
win, mURI, dsf, request, aEditable);
}
NS_DispatchToMainThread(r);
return NS_OK;
}
NS_IMETHODIMP
nsDOMDeviceStorage::Delete(const JS::Value & aPath, JSContext* aCx, nsIDOMDOMRequest * *_retval NS_OUTPARAM)
{
nsCOMPtr<nsIRunnable> r;
nsCOMPtr<nsPIDOMWindow> win = do_QueryReferent(mOwner);
if (!win) {
return NS_ERROR_UNEXPECTED;
}
nsRefPtr<DOMRequest> request = new DOMRequest(win);
NS_ADDREF(*_retval = request);
JSString* jsstr = JS_ValueToString(aCx, aPath);
nsDependentJSString path;
if (!path.init(aCx, jsstr)) {
nsRefPtr<DeviceStorageFile> dsf = new DeviceStorageFile(mFile);
r = new PostErrorEvent(request, POST_ERROR_EVENT_NON_STRING_TYPE_UNSUPPORTED, dsf);
} else if (!isSafePath(path)) {
nsRefPtr<DeviceStorageFile> dsf = new DeviceStorageFile(mFile, path);
r = new PostErrorEvent(request, POST_ERROR_EVENT_ILLEGAL_FILE_NAME, dsf);
}
else {
nsCOMPtr<nsIFile> file;
mFile->Clone(getter_AddRefs(file));
AppendRelativePath(file, path);
nsRefPtr<DeviceStorageFile> dsf = new DeviceStorageFile(file, path);
r = new DeviceStorageRequest(DeviceStorageRequest::DEVICE_STORAGE_REQUEST_DELETE,
win, mURI, dsf, request, true);
}
NS_DispatchToMainThread(r);
return NS_OK;
}
NS_IMETHODIMP
nsDOMDeviceStorage::Enumerate(const nsAString & aPath,
nsIDOMDeviceStorageCursor * *_retval NS_OUTPARAM)
{
return EnumerateInternal(aPath, _retval, false);
}
NS_IMETHODIMP
nsDOMDeviceStorage::EnumerateEditable(const nsAString & aPath,
nsIDOMDeviceStorageCursor * *_retval NS_OUTPARAM)
{
return EnumerateInternal(aPath, _retval, true);
}
nsresult
nsDOMDeviceStorage::EnumerateInternal(const nsAString & aPath,
nsIDOMDeviceStorageCursor * *_retval NS_OUTPARAM,
bool aEditable)
{
nsCOMPtr<nsPIDOMWindow> win = do_QueryReferent(mOwner);
if (!win)
return NS_ERROR_UNEXPECTED;
nsRefPtr<DeviceStorageFile> dsf = new DeviceStorageFile(mFile, aPath);
nsDOMDeviceStorageCursor* cursor = new nsDOMDeviceStorageCursor(win, mURI, dsf, aEditable);
NS_ADDREF(*_retval = cursor);
return NS_OK;
}
Ссылка в новой задаче Показать git blame Копировать постоянную ссылку