/* 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 "nsDownloader.h" #include "nsIInputStream.h" #include "nsIOutputStream.h" #include "nsDirectoryServiceUtils.h" #include "nsDirectoryServiceDefs.h" #include "nsNetUtil.h" #include "nsCRTGlue.h" nsDownloader::~nsDownloader() { if (mLocation && mLocationIsTemp) { // release the sink first since it may still hold an open file // descriptor to mLocation. this needs to happen before the // file can be removed otherwise the Remove call will fail. if (mSink) { mSink->Close(); mSink = nullptr; } nsresult rv = mLocation->Remove(false); if (NS_FAILED(rv)) NS_ERROR("unable to remove temp file"); } } NS_IMPL_ISUPPORTS(nsDownloader, nsIDownloader, nsIStreamListener, nsIRequestObserver) NS_IMETHODIMP nsDownloader::Init(nsIDownloadObserver *observer, nsIFile *location) { mObserver = observer; mLocation = location; return NS_OK; } NS_IMETHODIMP nsDownloader::OnStartRequest(nsIRequest *request, nsISupports *ctxt) { nsresult rv; if (!mLocation) { nsCOMPtr<nsIFile> location; rv = NS_GetSpecialDirectory(NS_OS_TEMP_DIR, getter_AddRefs(location)); if (NS_FAILED(rv)) return rv; char buf[13]; NS_MakeRandomString(buf, 8); memcpy(buf+8, ".tmp", 5); rv = location->AppendNative(nsDependentCString(buf, 12)); if (NS_FAILED(rv)) return rv; rv = location->CreateUnique(nsIFile::NORMAL_FILE_TYPE, 0600); if (NS_FAILED(rv)) return rv; location.swap(mLocation); mLocationIsTemp = true; } rv = NS_NewLocalFileOutputStream(getter_AddRefs(mSink), mLocation); if (NS_FAILED(rv)) return rv; // we could wrap this output stream with a buffered output stream, // but it shouldn't be necessary since we will be writing large // chunks given to us via OnDataAvailable. return NS_OK; } NS_IMETHODIMP nsDownloader::OnStopRequest(nsIRequest *request, nsISupports *ctxt, nsresult status) { if (mSink) { mSink->Close(); mSink = nullptr; } mObserver->OnDownloadComplete(this, request, ctxt, status, mLocation); mObserver = nullptr; return NS_OK; } nsresult nsDownloader::ConsumeData(nsIInputStream* in, void* closure, const char* fromRawSegment, uint32_t toOffset, uint32_t count, uint32_t *writeCount) { nsDownloader *self = (nsDownloader *) closure; if (self->mSink) return self->mSink->Write(fromRawSegment, count, writeCount); *writeCount = count; return NS_OK; } NS_IMETHODIMP nsDownloader::OnDataAvailable(nsIRequest *request, nsISupports *ctxt, nsIInputStream *inStr, uint64_t sourceOffset, uint32_t count) { uint32_t n; return inStr->ReadSegments(ConsumeData, this, count, &n); }