BlobParent*
nsIContentParent::GetOrCreateActorForBlob(nsIDOMBlob* aBlob)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(aBlob);
// If the blob represents a remote blob for this ContentParent then we can
// simply pass its actor back here.
const auto* domFile = static_cast<DOMFile*>(aBlob);
nsCOMPtr<nsIRemoteBlob> remoteBlob = do_QueryInterface(domFile->Impl());
if (remoteBlob) {
BlobParent* actor = remoteBlob->GetBlobParent();
if (actor && actor->GetContentManager() == this) {
return actor;
}
}
// All blobs shared between processes must be immutable.
nsCOMPtr<nsIMutable> mutableBlob = do_QueryInterface(aBlob);
if (!mutableBlob || NS_FAILED(mutableBlob->SetMutable(false))) {
NS_WARNING("Failed to make blob immutable!");
return nullptr;
}
// XXX This is only safe so long as all blob implementations in our tree
// inherit DOMFileImplBase. If that ever changes then this will need to grow
// a real interface or something.
const auto* blob = static_cast<DOMFileImplBase*>(domFile->Impl());
ChildBlobConstructorParams params;
if (blob->IsSizeUnknown() || blob->IsDateUnknown()) {
// We don't want to call GetSize or GetLastModifiedDate
// yet since that may stat a file on the main thread
// here. Instead we'll learn the size lazily from the
// other process.
params = MysteryBlobConstructorParams();
}
else {
nsString contentType;
nsresult rv = aBlob->GetType(contentType);
NS_ENSURE_SUCCESS(rv, nullptr);
uint64_t length;
rv = aBlob->GetSize(&length);
NS_ENSURE_SUCCESS(rv, nullptr);
nsCOMPtr<nsIDOMFile> file = do_QueryInterface(aBlob);
if (file) {
FileBlobConstructorParams fileParams;
rv = file->GetMozLastModifiedDate(&fileParams.modDate());
NS_ENSURE_SUCCESS(rv, nullptr);
rv = file->GetName(fileParams.name());
NS_ENSURE_SUCCESS(rv, nullptr);
fileParams.contentType() = contentType;
fileParams.length() = length;
params = fileParams;
} else {
NormalBlobConstructorParams blobParams;
blobParams.contentType() = contentType;
blobParams.length() = length;
params = blobParams;
}
}
BlobParent* actor = BlobParent::Create(this, aBlob);
NS_ENSURE_TRUE(actor, nullptr);
return SendPBlobConstructor(actor, params) ? actor : nullptr;
}
BlobChild*
nsIContentChild::GetOrCreateActorForBlob(nsIDOMBlob* aBlob)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(aBlob);
// If the blob represents a remote blob then we can simply pass its actor back
// here.
const auto* domFile = static_cast<DOMFile*>(aBlob);
nsCOMPtr<nsIRemoteBlob> remoteBlob = do_QueryInterface(domFile->Impl());
if (remoteBlob) {
BlobChild* actor = remoteBlob->GetBlobChild();
MOZ_ASSERT(actor);
if (actor->GetContentManager() == this) {
return actor;
}
}
// All blobs shared between processes must be immutable.
nsCOMPtr<nsIMutable> mutableBlob = do_QueryInterface(aBlob);
if (!mutableBlob || NS_FAILED(mutableBlob->SetMutable(false))) {
NS_WARNING("Failed to make blob immutable!");
return nullptr;
}
#ifdef DEBUG
{
// XXX This is only safe so long as all blob implementations in our tree
// inherit DOMFileImplBase. If that ever changes then this will need to
// grow a real interface or something.
const auto* blob = static_cast<DOMFileImplBase*>(domFile->Impl());
MOZ_ASSERT(!blob->IsSizeUnknown());
MOZ_ASSERT(!blob->IsDateUnknown());
}
#endif
ParentBlobConstructorParams params;
nsString contentType;
nsresult rv = aBlob->GetType(contentType);
NS_ENSURE_SUCCESS(rv, nullptr);
uint64_t length;
rv = aBlob->GetSize(&length);
NS_ENSURE_SUCCESS(rv, nullptr);
nsCOMPtr<nsIInputStream> stream;
rv = aBlob->GetInternalStream(getter_AddRefs(stream));
NS_ENSURE_SUCCESS(rv, nullptr);
InputStreamParams inputStreamParams;
nsTArray<mozilla::ipc::FileDescriptor> fds;
SerializeInputStream(stream, inputStreamParams, fds);
MOZ_ASSERT(fds.IsEmpty());
params.optionalInputStreamParams() = inputStreamParams;
nsCOMPtr<nsIDOMFile> file = do_QueryInterface(aBlob);
if (file) {
FileBlobConstructorParams fileParams;
rv = file->GetName(fileParams.name());
NS_ENSURE_SUCCESS(rv, nullptr);
rv = file->GetMozLastModifiedDate(&fileParams.modDate());
NS_ENSURE_SUCCESS(rv, nullptr);
fileParams.contentType() = contentType;
fileParams.length() = length;
params.blobParams() = fileParams;
} else {
NormalBlobConstructorParams blobParams;
blobParams.contentType() = contentType;
blobParams.length() = length;
params.blobParams() = blobParams;
}
BlobChild* actor = BlobChild::Create(this, aBlob);
NS_ENSURE_TRUE(actor, nullptr);
return SendPBlobConstructor(actor, params) ? actor : nullptr;
}
BlobParent*
ContentParent::GetOrCreateActorForBlob(nsIDOMBlob* aBlob)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
NS_ASSERTION(aBlob, "Null pointer!");
nsCOMPtr<nsIRemoteBlob> remoteBlob = do_QueryInterface(aBlob);
if (remoteBlob) {
BlobParent* actor =
static_cast<BlobParent*>(
static_cast<PBlobParent*>(remoteBlob->GetPBlob()));
NS_ASSERTION(actor, "Null actor?!");
return actor;
}
// XXX This is only safe so long as all blob implementations in our tree
// inherit nsDOMFileBase. If that ever changes then this will need to grow
// a real interface or something.
const nsDOMFileBase* blob = static_cast<nsDOMFileBase*>(aBlob);
BlobConstructorParams params;
if (blob->IsSizeUnknown()) {
// We don't want to call GetSize yet since that may stat a file on the main
// thread here. Instead we'll learn the size lazily from the other process.
params = MysteryBlobConstructorParams();
}
else {
nsString contentType;
nsresult rv = aBlob->GetType(contentType);
NS_ENSURE_SUCCESS(rv, nullptr);
PRUint64 length;
rv = aBlob->GetSize(&length);
NS_ENSURE_SUCCESS(rv, nullptr);
nsCOMPtr<nsIDOMFile> file = do_QueryInterface(aBlob);
if (file) {
FileBlobConstructorParams fileParams;
rv = file->GetName(fileParams.name());
NS_ENSURE_SUCCESS(rv, nullptr);
fileParams.contentType() = contentType;
fileParams.length() = length;
params = fileParams;
} else {
NormalBlobConstructorParams blobParams;
blobParams.contentType() = contentType;
blobParams.length() = length;
params = blobParams;
}
}
BlobParent* actor = BlobParent::Create(aBlob);
NS_ENSURE_TRUE(actor, nullptr);
if (!SendPBlobConstructor(actor, params)) {
return nullptr;
}
return actor;
}
