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/*
* Copyright (C) 2012 Igalia S.L.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "config.h"
#include "WebKitSoupRequestInputStream.h"
#include <wtf/OwnPtr.h>
#include <wtf/PassOwnPtr.h>
#include <wtf/Threading.h>
#include <wtf/gobject/GRefPtr.h>
struct AsyncReadData {
AsyncReadData(GSimpleAsyncResult* result, void* buffer, gsize count, GCancellable* cancellable)
: result(result)
, buffer(buffer)
, count(count)
, cancellable(cancellable)
{
}
GRefPtr<GSimpleAsyncResult> result;
void* buffer;
size_t count;
GRefPtr<GCancellable> cancellable;
};
struct _WebKitSoupRequestInputStreamPrivate {
uint64_t contentLength;
uint64_t bytesReceived;
uint64_t bytesRead;
Mutex readLock;
OwnPtr<AsyncReadData> pendingAsyncRead;
};
G_DEFINE_TYPE(WebKitSoupRequestInputStream, webkit_soup_request_input_stream, G_TYPE_MEMORY_INPUT_STREAM)
static void webkitSoupRequestInputStreamReadAsyncResultComplete(WebKitSoupRequestInputStream* stream, GSimpleAsyncResult* result, void* buffer, gsize count, GCancellable* cancellable)
{
GError* error = 0;
gssize bytesRead = G_INPUT_STREAM_GET_CLASS(stream)->read_fn(G_INPUT_STREAM(stream), buffer, count, cancellable, &error);
if (!error) {
g_simple_async_result_set_op_res_gssize(result, bytesRead);
stream->priv->bytesRead += bytesRead;
} else
g_simple_async_result_take_error(result, error);
g_simple_async_result_complete_in_idle(result);
}
static void webkitSoupRequestInputStreamPendingReadAsyncComplete(WebKitSoupRequestInputStream* stream)
{
if (!stream->priv->pendingAsyncRead)
return;
AsyncReadData* data = stream->priv->pendingAsyncRead.get();
webkitSoupRequestInputStreamReadAsyncResultComplete(stream, data->result.get(), data->buffer, data->count, data->cancellable.get());
stream->priv->pendingAsyncRead.clear();
}
static bool webkitSoupRequestInputStreamHasDataToRead(WebKitSoupRequestInputStream* stream)
{
return stream->priv->bytesRead < stream->priv->bytesReceived;
}
static bool webkitSoupRequestInputStreamIsWaitingForData(WebKitSoupRequestInputStream* stream)
{
return !stream->priv->contentLength || stream->priv->bytesReceived < stream->priv->contentLength;
}
static void webkitSoupRequestInputStreamReadAsync(GInputStream* inputStream, void* buffer, gsize count, int /*priority*/, GCancellable* cancellable, GAsyncReadyCallback callback, gpointer userData)
{
WebKitSoupRequestInputStream* stream = WEBKIT_SOUP_REQUEST_INPUT_STREAM(inputStream);
GRefPtr<GSimpleAsyncResult> result = adoptGRef(g_simple_async_result_new(G_OBJECT(stream), callback, userData, reinterpret_cast<void*>(webkitSoupRequestInputStreamReadAsync)));
MutexLocker locker(stream->priv->readLock);
if (!webkitSoupRequestInputStreamHasDataToRead(stream) && !webkitSoupRequestInputStreamIsWaitingForData(stream)) {
g_simple_async_result_set_op_res_gssize(result.get(), 0);
g_simple_async_result_complete_in_idle(result.get());
return;
}
if (webkitSoupRequestInputStreamHasDataToRead(stream)) {
webkitSoupRequestInputStreamReadAsyncResultComplete(stream, result.get(), buffer, count, cancellable);
return;
}
stream->priv->pendingAsyncRead = adoptPtr(new AsyncReadData(result.get(), buffer, count, cancellable));
}
static gssize webkitSoupRequestInputStreamReadFinish(GInputStream*, GAsyncResult* result, GError**)
{
GSimpleAsyncResult* simpleResult = G_SIMPLE_ASYNC_RESULT(result);
g_warn_if_fail(g_simple_async_result_get_source_tag(simpleResult) == webkitSoupRequestInputStreamReadAsync);
return g_simple_async_result_get_op_res_gssize(simpleResult);
}
static void webkitSoupRequestInputStreamFinalize(GObject* object)
{
WEBKIT_SOUP_REQUEST_INPUT_STREAM(object)->priv->~WebKitSoupRequestInputStreamPrivate();
G_OBJECT_CLASS(webkit_soup_request_input_stream_parent_class)->finalize(object);
}
static void webkit_soup_request_input_stream_init(WebKitSoupRequestInputStream* stream)
{
WebKitSoupRequestInputStreamPrivate* priv = G_TYPE_INSTANCE_GET_PRIVATE(stream, WEBKIT_TYPE_SOUP_REQUEST_INPUT_STREAM, WebKitSoupRequestInputStreamPrivate);
stream->priv = priv;
new (priv) WebKitSoupRequestInputStreamPrivate();
}
static void webkit_soup_request_input_stream_class_init(WebKitSoupRequestInputStreamClass* requestStreamClass)
{
GObjectClass* gObjectClass = G_OBJECT_CLASS(requestStreamClass);
gObjectClass->finalize = webkitSoupRequestInputStreamFinalize;
GInputStreamClass* inputStreamClass = G_INPUT_STREAM_CLASS(requestStreamClass);
inputStreamClass->read_async = webkitSoupRequestInputStreamReadAsync;
inputStreamClass->read_finish = webkitSoupRequestInputStreamReadFinish;
g_type_class_add_private(requestStreamClass, sizeof(WebKitSoupRequestInputStreamPrivate));
}
GInputStream* webkitSoupRequestInputStreamNew(uint64_t contentLength)
{
WebKitSoupRequestInputStream* stream = WEBKIT_SOUP_REQUEST_INPUT_STREAM(g_object_new(WEBKIT_TYPE_SOUP_REQUEST_INPUT_STREAM, NULL));
stream->priv->contentLength = contentLength;
return G_INPUT_STREAM(stream);
}
void webkitSoupRequestInputStreamAddData(WebKitSoupRequestInputStream* stream, const void* data, size_t dataLength)
{
if (webkitSoupRequestInputStreamFinished(stream))
return;
MutexLocker locker(stream->priv->readLock);
if (dataLength) {
// Truncate the dataLength to the contentLength if it's known.
if (stream->priv->contentLength && stream->priv->bytesReceived + dataLength > stream->priv->contentLength)
dataLength = stream->priv->contentLength - stream->priv->bytesReceived;
stream->priv->bytesReceived += dataLength;
g_memory_input_stream_add_data(G_MEMORY_INPUT_STREAM(stream), g_memdup(data, dataLength), dataLength, g_free);
} else {
// We have received all the data, set contentLength to bytesReceived to indicate we have finished.
stream->priv->contentLength = stream->priv->bytesReceived;
// If there's a pending read to complete, read_fn will return 0 because we haven't added more data to the
// memory input stream. And if there isn't a pending read, the next call to read_async will return 0 too, because
// webkitSoupRequestInputStreamFinished() is now TRUE.
}
webkitSoupRequestInputStreamPendingReadAsyncComplete(stream);
}
bool webkitSoupRequestInputStreamFinished(WebKitSoupRequestInputStream* stream)
{
return !webkitSoupRequestInputStreamIsWaitingForData(stream);
}
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