michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #include "nsDownloader.h"
michael@0: #include "nsIInputStream.h"
michael@0: #include "nsDirectoryServiceUtils.h"
michael@0: #include "nsDirectoryServiceDefs.h"
michael@0: #include "nsNetUtil.h"
michael@0: #include "nsCRTGlue.h"
michael@0: 
michael@0: nsDownloader::~nsDownloader()
michael@0: {
michael@0:     if (mLocation && mLocationIsTemp) {
michael@0:         // release the sink first since it may still hold an open file
michael@0:         // descriptor to mLocation.  this needs to happen before the
michael@0:         // file can be removed otherwise the Remove call will fail.
michael@0:         if (mSink) {
michael@0:             mSink->Close();
michael@0:             mSink = nullptr;
michael@0:         }
michael@0: 
michael@0:         nsresult rv = mLocation->Remove(false);
michael@0:         if (NS_FAILED(rv))
michael@0:             NS_ERROR("unable to remove temp file");
michael@0:     }
michael@0: }
michael@0: 
michael@0: NS_IMPL_ISUPPORTS(nsDownloader,
michael@0:                   nsIDownloader,
michael@0:                   nsIStreamListener,
michael@0:                   nsIRequestObserver)
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: nsDownloader::Init(nsIDownloadObserver *observer, nsIFile *location)
michael@0: {
michael@0:     mObserver = observer;
michael@0:     mLocation = location;
michael@0:     return NS_OK;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP 
michael@0: nsDownloader::OnStartRequest(nsIRequest *request, nsISupports *ctxt)
michael@0: {
michael@0:     nsresult rv;
michael@0:     if (!mLocation) {
michael@0:         nsCOMPtr<nsIFile> location;
michael@0:         rv = NS_GetSpecialDirectory(NS_OS_TEMP_DIR, getter_AddRefs(location));
michael@0:         if (NS_FAILED(rv)) return rv;
michael@0: 
michael@0:         char buf[13];
michael@0:         NS_MakeRandomString(buf, 8);
michael@0:         memcpy(buf+8, ".tmp", 5);
michael@0:         rv = location->AppendNative(nsDependentCString(buf, 12));
michael@0:         if (NS_FAILED(rv)) return rv;
michael@0: 
michael@0:         rv = location->CreateUnique(nsIFile::NORMAL_FILE_TYPE, 0600);
michael@0:         if (NS_FAILED(rv)) return rv;
michael@0: 
michael@0:         location.swap(mLocation);
michael@0:         mLocationIsTemp = true;
michael@0:     }
michael@0: 
michael@0:     rv = NS_NewLocalFileOutputStream(getter_AddRefs(mSink), mLocation);
michael@0:     if (NS_FAILED(rv)) return rv;
michael@0: 
michael@0:     // we could wrap this output stream with a buffered output stream,
michael@0:     // but it shouldn't be necessary since we will be writing large
michael@0:     // chunks given to us via OnDataAvailable.
michael@0: 
michael@0:     return NS_OK;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP 
michael@0: nsDownloader::OnStopRequest(nsIRequest  *request,
michael@0:                             nsISupports *ctxt,
michael@0:                             nsresult     status)
michael@0: {
michael@0:     if (mSink) {
michael@0:         mSink->Close();
michael@0:         mSink = nullptr;
michael@0:     }
michael@0: 
michael@0:     mObserver->OnDownloadComplete(this, request, ctxt, status, mLocation);
michael@0:     mObserver = nullptr;
michael@0: 
michael@0:     return NS_OK;
michael@0: }
michael@0: 
michael@0: NS_METHOD
michael@0: nsDownloader::ConsumeData(nsIInputStream* in,
michael@0:                           void* closure,
michael@0:                           const char* fromRawSegment,
michael@0:                           uint32_t toOffset,
michael@0:                           uint32_t count,
michael@0:                           uint32_t *writeCount)
michael@0: {
michael@0:     nsDownloader *self = (nsDownloader *) closure;
michael@0:     if (self->mSink)
michael@0:         return self->mSink->Write(fromRawSegment, count, writeCount);
michael@0: 
michael@0:     *writeCount = count;
michael@0:     return NS_OK;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP 
michael@0: nsDownloader::OnDataAvailable(nsIRequest *request, nsISupports *ctxt, 
michael@0:                               nsIInputStream *inStr, 
michael@0:                               uint64_t sourceOffset, uint32_t count)
michael@0: {
michael@0:     uint32_t n;  
michael@0:     return inStr->ReadSegments(ConsumeData, this, count, &n);
michael@0: }