already_AddRefed<FileImpl>
MultipartFileImpl::CreateSlice(uint64_t aStart, uint64_t aLength,
const nsAString& aContentType,
ErrorResult& aRv)
{
// If we clamped to nothing we create an empty blob
nsTArray<nsRefPtr<FileImpl>> blobImpls;
uint64_t length = aLength;
uint64_t skipStart = aStart;
// Prune the list of blobs if we can
uint32_t i;
for (i = 0; length && skipStart && i < mBlobImpls.Length(); i++) {
FileImpl* blobImpl = mBlobImpls[i].get();
uint64_t l = blobImpl->GetSize(aRv);
if (NS_WARN_IF(aRv.Failed())) {
return nullptr;
}
if (skipStart < l) {
uint64_t upperBound = std::min<uint64_t>(l - skipStart, length);
nsRefPtr<FileImpl> firstBlobImpl =
blobImpl->CreateSlice(skipStart, upperBound,
aContentType, aRv);
if (NS_WARN_IF(aRv.Failed())) {
return nullptr;
}
// Avoid wrapping a single blob inside an MultipartFileImpl
if (length == upperBound) {
return firstBlobImpl.forget();
}
blobImpls.AppendElement(firstBlobImpl);
length -= upperBound;
i++;
break;
}
skipStart -= l;
}
// Now append enough blobs until we're done
for (; length && i < mBlobImpls.Length(); i++) {
FileImpl* blobImpl = mBlobImpls[i].get();
uint64_t l = blobImpl->GetSize(aRv);
if (NS_WARN_IF(aRv.Failed())) {
return nullptr;
}
if (length < l) {
nsRefPtr<FileImpl> lastBlobImpl =
blobImpl->CreateSlice(0, length, aContentType, aRv);
if (NS_WARN_IF(aRv.Failed())) {
return nullptr;
}
blobImpls.AppendElement(lastBlobImpl);
} else {
blobImpls.AppendElement(blobImpl);
}
length -= std::min<uint64_t>(l, length);
}
// we can create our blob now
nsRefPtr<FileImpl> impl =
new MultipartFileImpl(blobImpls, aContentType);
return impl.forget();
}
nsresult
FetchDriver::BasicFetch()
{
nsAutoCString url;
mRequest->GetURL(url);
nsCOMPtr<nsIURI> uri;
nsresult rv = NS_NewURI(getter_AddRefs(uri),
url,
nullptr,
nullptr);
if (NS_WARN_IF(NS_FAILED(rv))) {
FailWithNetworkError();
return rv;
}
nsAutoCString scheme;
rv = uri->GetScheme(scheme);
if (NS_WARN_IF(NS_FAILED(rv))) {
FailWithNetworkError();
return rv;
}
if (scheme.LowerCaseEqualsLiteral("about")) {
if (url.EqualsLiteral("about:blank")) {
nsRefPtr<InternalResponse> response =
new InternalResponse(200, NS_LITERAL_CSTRING("OK"));
ErrorResult result;
response->Headers()->Append(NS_LITERAL_CSTRING("content-type"),
NS_LITERAL_CSTRING("text/html;charset=utf-8"),
result);
MOZ_ASSERT(!result.Failed());
nsCOMPtr<nsIInputStream> body;
rv = NS_NewCStringInputStream(getter_AddRefs(body), EmptyCString());
if (NS_WARN_IF(NS_FAILED(rv))) {
FailWithNetworkError();
return rv;
}
response->SetBody(body);
BeginResponse(response);
return SucceedWithResponse();
}
return FailWithNetworkError();
}
if (scheme.LowerCaseEqualsLiteral("blob")) {
nsRefPtr<FileImpl> blobImpl;
rv = NS_GetBlobForBlobURI(uri, getter_AddRefs(blobImpl));
FileImpl* blob = static_cast<FileImpl*>(blobImpl.get());
if (NS_WARN_IF(NS_FAILED(rv))) {
FailWithNetworkError();
return rv;
}
nsRefPtr<InternalResponse> response = new InternalResponse(200, NS_LITERAL_CSTRING("OK"));
{
ErrorResult result;
uint64_t size = blob->GetSize(result);
if (NS_WARN_IF(result.Failed())) {
FailWithNetworkError();
return result.ErrorCode();
}
nsAutoString sizeStr;
sizeStr.AppendInt(size);
response->Headers()->Append(NS_LITERAL_CSTRING("Content-Length"), NS_ConvertUTF16toUTF8(sizeStr), result);
if (NS_WARN_IF(result.Failed())) {
FailWithNetworkError();
return result.ErrorCode();
}
nsAutoString type;
blob->GetType(type);
response->Headers()->Append(NS_LITERAL_CSTRING("Content-Type"), NS_ConvertUTF16toUTF8(type), result);
if (NS_WARN_IF(result.Failed())) {
FailWithNetworkError();
return result.ErrorCode();
}
}
nsCOMPtr<nsIInputStream> stream;
rv = blob->GetInternalStream(getter_AddRefs(stream));
if (NS_WARN_IF(NS_FAILED(rv))) {
FailWithNetworkError();
return rv;
}
response->SetBody(stream);
BeginResponse(response);
return SucceedWithResponse();
}
if (scheme.LowerCaseEqualsLiteral("data")) {
nsAutoCString method;
mRequest->GetMethod(method);
if (method.LowerCaseEqualsASCII("get")) {
// Use nsDataHandler directly so that we can extract the content type.
// XXX(nsm): Is there a way to acquire the charset without such tight
// coupling with the DataHandler? nsIProtocolHandler does not provide
// anything similar.
nsAutoCString contentType, contentCharset, dataBuffer, hashRef;
bool isBase64;
rv = nsDataHandler::ParseURI(url,
contentType,
contentCharset,
isBase64,
dataBuffer,
hashRef);
if (NS_SUCCEEDED(rv)) {
ErrorResult result;
nsRefPtr<InternalResponse> response = new InternalResponse(200, NS_LITERAL_CSTRING("OK"));
if (!contentCharset.IsEmpty()) {
contentType.Append(";charset=");
contentType.Append(contentCharset);
}
response->Headers()->Append(NS_LITERAL_CSTRING("Content-Type"), contentType, result);
if (!result.Failed()) {
nsCOMPtr<nsIInputStream> stream;
rv = NS_NewCStringInputStream(getter_AddRefs(stream), dataBuffer);
if (NS_SUCCEEDED(rv)) {
response->SetBody(stream);
BeginResponse(response);
return SucceedWithResponse();
}
}
}
}
return FailWithNetworkError();
}
if (scheme.LowerCaseEqualsLiteral("file")) {
} else if (scheme.LowerCaseEqualsLiteral("http") ||
scheme.LowerCaseEqualsLiteral("https")) {
return HttpFetch();
}
return FailWithNetworkError();
}
