NS_IMETHODIMP
nsUrlClassifierStreamUpdater::OnDataAvailable(nsIRequest *request,
nsISupports* context,
nsIInputStream *aIStream,
uint64_t aSourceOffset,
uint32_t aLength)
{
if (!mDBService)
return NS_ERROR_NOT_INITIALIZED;
LOG(("OnDataAvailable (%d bytes)", aLength));
nsresult rv;
// Copy the data into a nsCString
nsCString chunk;
rv = NS_ConsumeStream(aIStream, aLength, chunk);
NS_ENSURE_SUCCESS(rv, rv);
//LOG(("Chunk (%d): %s\n\n", chunk.Length(), chunk.get()));
rv = mDBService->UpdateStream(chunk);
NS_ENSURE_SUCCESS(rv, rv);
return NS_OK;
}
NS_IMETHODIMP
nsJSONListener::OnDataAvailable(nsIRequest *aRequest, nsISupports *aContext,
nsIInputStream *aStream,
uint64_t aOffset, uint32_t aLength)
{
nsresult rv = NS_OK;
if (mNeedsConverter && mSniffBuffer.Length() < 4) {
uint32_t readCount = (aLength < 4) ? aLength : 4;
rv = NS_ConsumeStream(aStream, readCount, mSniffBuffer);
NS_ENSURE_SUCCESS(rv, rv);
if (mSniffBuffer.Length() < 4)
return NS_OK;
}
char buffer[JSON_STREAM_BUFSIZE];
unsigned long bytesRemaining = aLength - mSniffBuffer.Length();
while (bytesRemaining) {
unsigned int bytesRead;
rv = aStream->Read(buffer,
std::min((unsigned long)sizeof(buffer), bytesRemaining),
&bytesRead);
NS_ENSURE_SUCCESS(rv, rv);
rv = ProcessBytes(buffer, bytesRead);
NS_ENSURE_SUCCESS(rv, rv);
bytesRemaining -= bytesRead;
}
return rv;
}
static bool test_consume_stream() {
const char kData[] =
"Get your facts first, and then you can distort them as much as you "
"please.";
nsCOMPtr<nsIInputStream> input;
nsCOMPtr<nsIOutputStream> output;
NS_NewPipe(getter_AddRefs(input),
getter_AddRefs(output),
10, PR_UINT32_MAX);
if (!input || !output)
return PR_FALSE;
PRUint32 n = 0;
output->Write(kData, sizeof(kData) - 1, &n);
if (n != (sizeof(kData) - 1))
return PR_FALSE;
output = nsnull; // close output
nsCString buf;
if (NS_FAILED(NS_ConsumeStream(input, PR_UINT32_MAX, buf)))
return PR_FALSE;
if (!buf.Equals(kData))
return PR_FALSE;
return PR_TRUE;
}
// Synchronously consume the given input stream and validate the resulting data
// against the given string of expected values.
void
ConsumeAndValidateStream(nsIInputStream* aStream,
const nsACString& aExpectedData)
{
nsAutoCString outputData;
nsresult rv = NS_ConsumeStream(aStream, UINT32_MAX, outputData);
ASSERT_TRUE(NS_SUCCEEDED(rv));
ASSERT_EQ(aExpectedData.Length(), outputData.Length());
ASSERT_TRUE(aExpectedData.Equals(outputData));
}
NS_IMETHODIMP nsStreamCipher::UpdateFromStream(nsIInputStream *aStream,
PRInt32 aLen)
{
if (!mContext)
return NS_ERROR_NOT_INITIALIZED;
nsCString inputString;
nsresult rv = NS_ConsumeStream(aStream, aLen, inputString);
NS_ENSURE_SUCCESS(rv, rv);
return UpdateFromString(inputString);
}
NS_IMETHODIMP
FaviconLoadListener::OnDataAvailable(nsIRequest *aRequest,
nsISupports *aContext,
nsIInputStream *aInputStream,
PRUint32 aOffset,
PRUint32 aCount)
{
nsCString buffer;
nsresult rv = NS_ConsumeStream(aInputStream, aCount, buffer);
if (rv != NS_BASE_STREAM_WOULD_BLOCK && NS_FAILED(rv))
return rv;
mData.Append(buffer);
return NS_OK;
}
TEST(CloneInputStream, CloneMultiplexStreamPartial)
{
nsCOMPtr<nsIMultiplexInputStream> stream =
do_CreateInstance("@mozilla.org/io/multiplex-input-stream;1");
ASSERT_TRUE(stream);
nsTArray<char> inputData;
testing::CreateData(1024, inputData);
for (uint32_t i = 0; i < 2; ++i) {
nsCString inputString(inputData.Elements(), inputData.Length());
nsCOMPtr<nsIInputStream> base;
nsresult rv = NS_NewCStringInputStream(getter_AddRefs(base), inputString);
ASSERT_TRUE(NS_SUCCEEDED(rv));
rv = stream->AppendStream(base);
ASSERT_TRUE(NS_SUCCEEDED(rv));
}
// Fail when first stream read, but second hasn't been started.
nsAutoPtr<char> buffer(new char[1024]);
uint32_t read;
nsresult rv = stream->Read(buffer, 1024, &read);
ASSERT_TRUE(NS_SUCCEEDED(rv));
nsCOMPtr<nsIInputStream> clone;
rv = NS_CloneInputStream(stream, getter_AddRefs(clone));
ASSERT_TRUE(NS_FAILED(rv));
// Fail after beginning read of second stream.
rv = stream->Read(buffer, 512, &read);
ASSERT_TRUE(NS_SUCCEEDED(rv) && read == 512);
rv = NS_CloneInputStream(stream, getter_AddRefs(clone));
ASSERT_TRUE(NS_FAILED(rv));
// Fail at the end.
nsAutoCString consumed;
rv = NS_ConsumeStream(stream, UINT32_MAX, consumed);
ASSERT_TRUE(NS_SUCCEEDED(rv));
rv = NS_CloneInputStream(stream, getter_AddRefs(clone));
ASSERT_TRUE(NS_FAILED(rv));
}
NS_IMETHODIMP
nsUrlClassifierHashCompleterRequest::OnDataAvailable(nsIRequest *request,
nsISupports *context,
nsIInputStream *stream,
PRUint32 sourceOffset,
PRUint32 length)
{
LOG(("nsUrlClassifierHashCompleter::OnDataAvailable [%p]", this));
if (mShuttingDown)
return NS_ERROR_ABORT;
nsCAutoString piece;
nsresult rv = NS_ConsumeStream(stream, length, piece);
NS_ENSURE_SUCCESS(rv, rv);
mResponse.Append(piece);
return NS_OK;
}
// nsFaviconService::OptimizeFaviconImage
//
// Given a blob of data (a image file already read into a buffer), optimize
// its size by recompressing it as a 16x16 PNG.
nsresult
nsFaviconService::OptimizeFaviconImage(const PRUint8* aData, PRUint32 aDataLen,
const nsACString& aMimeType,
nsACString& aNewData,
nsACString& aNewMimeType)
{
nsresult rv;
nsCOMPtr<imgITools> imgtool = do_CreateInstance("@mozilla.org/image/tools;1");
nsCOMPtr<nsIInputStream> stream;
rv = NS_NewByteInputStream(getter_AddRefs(stream),
reinterpret_cast<const char*>(aData), aDataLen,
NS_ASSIGNMENT_DEPEND);
NS_ENSURE_SUCCESS(rv, rv);
// decode image
nsCOMPtr<imgIContainer> container;
rv = imgtool->DecodeImageData(stream, aMimeType, getter_AddRefs(container));
NS_ENSURE_SUCCESS(rv, rv);
aNewMimeType.AssignLiteral("image/png");
// scale and recompress
nsCOMPtr<nsIInputStream> iconStream;
rv = imgtool->EncodeScaledImage(container, aNewMimeType, 16, 16,
getter_AddRefs(iconStream));
NS_ENSURE_SUCCESS(rv, rv);
// Read the stream into a new buffer.
rv = NS_ConsumeStream(iconStream, PR_UINT32_MAX, aNewData);
NS_ENSURE_SUCCESS(rv, rv);
return NS_OK;
}
NS_IMETHODIMP
DataStorage::Reader::Run()
{
nsresult rv;
// Concurrent operations on nsIFile objects are not guaranteed to be safe,
// so we clone the file while holding the lock and then release the lock.
// At that point, we can safely operate on the clone.
nsCOMPtr<nsIFile> file;
{
MutexAutoLock lock(mDataStorage->mMutex);
// If we don't have a profile, bail.
if (!mDataStorage->mBackingFile) {
return NS_OK;
}
rv = mDataStorage->mBackingFile->Clone(getter_AddRefs(file));
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
}
nsCOMPtr<nsIInputStream> fileInputStream;
rv = NS_NewLocalFileInputStream(getter_AddRefs(fileInputStream), file);
// If we failed for some reason other than the file doesn't exist, bail.
if (NS_WARN_IF(NS_FAILED(rv) &&
rv != NS_ERROR_FILE_TARGET_DOES_NOT_EXIST && // on Unix
rv != NS_ERROR_FILE_NOT_FOUND)) { // on Windows
return rv;
}
// If there is a file with data in it, read it. If there isn't,
// we'll essentially fall through to notifying that we're good to go.
nsCString data;
if (fileInputStream) {
// Limit to 2MB of data, but only store sMaxDataEntries entries.
rv = NS_ConsumeStream(fileInputStream, 1u << 21, data);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
}
// Atomically parse the data and insert the entries read.
// Don't clear existing entries - they may have been inserted between when
// this read was kicked-off and when it was run.
{
MutexAutoLock lock(mDataStorage->mMutex);
// The backing file consists of a list of
// <key>\t<score>\t<last accessed time>\t<value>\n
// The final \n is not optional; if it is not present the line is assumed
// to be corrupt.
int32_t currentIndex = 0;
int32_t newlineIndex = 0;
do {
newlineIndex = data.FindChar('\n', currentIndex);
// If there are no more newlines or the data table has too many
// entries, we are done.
if (newlineIndex < 0 ||
mDataStorage->mPersistentDataTable.Count() >= sMaxDataEntries) {
break;
}
nsDependentCSubstring line(data, currentIndex,
newlineIndex - currentIndex);
currentIndex = newlineIndex + 1;
nsCString key;
Entry entry;
nsresult parseRV = ParseLine(line, key, entry);
if (NS_SUCCEEDED(parseRV)) {
// It could be the case that a newer entry was added before
// we got around to reading the file. Don't overwrite new entries.
Entry newerEntry;
bool present = mDataStorage->mPersistentDataTable.Get(key, &newerEntry);
if (!present) {
mDataStorage->mPersistentDataTable.Put(key, entry);
}
}
} while (true);
}
return NS_OK;
}
