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fuzzing: New typefind target

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Simple appsrc ! typefind ! fakesink pipeline
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Edward Hervey 2017-10-31 07:43:07 +01:00 committed by Edward Hervey
parent 7a4aec73c5
commit 87e1f69b19
1 changed files with 105 additions and 0 deletions
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fuzzing/typefind.c Normal file
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/*
* Copyright 2016 Google Inc.
* author: Edward Hervey <bilboed@bilboed.com>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <locale.h>
#include <stdlib.h>
#include <glib.h>
#include <gst/gst.h>
GST_PLUGIN_STATIC_DECLARE(coreelements);
GST_PLUGIN_STATIC_DECLARE(typefindfunctions);
GST_PLUGIN_STATIC_DECLARE(app);
/* push-based typefind fuzzing target
*
* This application can be compiled with libFuzzer to simulate
* a push-based typefind execution.
*
* To reproduce the failing behaviour, use:
* $ gst-launch-1.0 pushfile:///.. ! typefind ! fakesink
*
* The goal is to cover typefind code and implementation.
*
**/
static void
appsrc_configuration (GstDiscoverer *dc, GstElement *source, gpointer data)
{
GstBuffer *buf;
GstFlowReturn ret;
/* Create buffer from fuzztesting_data which shouldn't be freed */
}
int LLVMFuzzerTestOneInput(const guint8 *data, size_t size)
{
GError *err = NULL;
static gboolean initialized = 0;
GstElement *pipeline, *source, *typefind, *fakesink;
GstBuffer *buf;
GstFlowReturn flowret;
if (!initialized) {
/* We want critical warnings to assert so we can fix them
* But somehow it's not causing oss-fuzz to crash ... */
g_setenv ("G_DEBUG", "fatal-criticals", TRUE);
/* Only initialize and register plugins once */
gst_init (NULL, NULL);
GST_PLUGIN_STATIC_REGISTER(coreelements);
GST_PLUGIN_STATIC_REGISTER(typefindfunctions);
GST_PLUGIN_STATIC_REGISTER(app);
}
/* Create the pipeline */
source = gst_element_factory_make ("appsrc", "source");
typefind = gst_element_factory_make ("typefind", "typefind");
fakesink = gst_element_factory_make ("fakesink", "fakesink");
gst_bin_add_many (GST_BIN (pipeline), source, typefind, fakesink, NULL);
gst_element_link_many (source, typefind, fakesink, NULL);
/* Set pipeline to READY so we can provide data to appsrc */
gst_element_set_state (GST_ELEMENT (pipeline), GST_STATE_READY);
buf = gst_buffer_new_wrapped_full (0, (gpointer) data, size,
0, size, NULL, NULL);
g_object_set (G_OBJECT (source), "size", size, NULL);
g_signal_emit_by_name (G_OBJECT(source), "push-buffer", buf, &ret);
gst_buffer_unref (buf);
/* Set pipeline to PAUSED and wait (typefind will either fail or succeed) */
gst_element_set_state (GST_ELEMENT (pipeline), GST_STATE_PAUSED);
/* wait until state change either completes or fails */
sret = gst_element_get_state (GST_ELEMENT (pipeline), &state, NULL, -1);
/* Go back to NULL */
gst_element_set_state (GST_ELEMENT (pipeline), GST_STATE_NULL);
/* And release the pipeline */
gst_object_unref (pipeline);
return 0;
}