Adding upstream version 1.4.3+ds.upstream/1.4.3+dsupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 352 insertions, 0 deletions

diff --git a/oss-fuzz/encoder_v2.cc b/oss-fuzz/encoder_v2.cc
new file mode 100644
index 0000000..6448346
--- /dev/null
+++ b/oss-fuzz/encoder_v2.cc
@@ -0,0 +1,352 @@
+/* fuzzer_encoder_v2
+ * Copyright (C) 2022-2023  Xiph.Org Foundation
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * - Neither the name of the Xiph.org Foundation nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <cstdlib>
+#include <cstring> /* for memcpy */
+#include "FLAC/stream_encoder.h"
+#include "FLAC/metadata.h"
+extern "C" {
+#include "share/private.h"
+}
+#include "common.h"
+
+/* This C++ fuzzer uses the FLAC and not FLAC++ because the latter lacks a few
+ * hidden functions like FLAC__stream_encoder_disable_constant_subframes. It
+ * is still processed by a C++ compiler because that's what oss-fuzz expects */
+
+
+static FLAC__StreamEncoderWriteStatus write_callback(const FLAC__StreamEncoder *encoder, const FLAC__byte buffer[], size_t bytes, uint32_t samples, uint32_t current_frame, void *client_data)
+{
+	(void)encoder, (void)buffer, (void)bytes, (void)samples, (void)current_frame, (void)client_data;
+	return FLAC__STREAM_ENCODER_WRITE_STATUS_OK;
+}
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
+{
+	FLAC__bool encoder_valid = true;
+	FLAC__StreamEncoder *encoder = 0;
+	FLAC__StreamEncoderState state;
+	FLAC__StreamMetadata *metadata[16] = {NULL};
+	unsigned num_metadata = 0;
+	FLAC__StreamMetadata_VorbisComment_Entry VorbisCommentField;
+
+	unsigned sample_rate, channels, bps;
+	uint64_t samples_estimate, samples_in_input;
+	unsigned compression_level, input_data_width, blocksize, max_lpc_order, qlp_coeff_precision, min_residual_partition_order, max_residual_partition_order, metadata_mask, instruction_set_disable_mask;
+	FLAC__bool ogg, write_to_file, interleaved;
+
+	FLAC__bool data_bools[24];
+
+	/* Set alloc threshold. This check was added later and no spare config
+	 * bytes were left, so we're reusing the sample rate as that of little
+	 * consequence to the encoder and decoder except reading the frame header */
+
+	if(size < 3)
+		return 0;
+	alloc_check_threshold = data[2];
+	alloc_check_counter = 0;
+
+	/* allocate the encoder */
+	if((encoder = FLAC__stream_encoder_new()) == NULL) {
+		fprintf(stderr, "ERROR: allocating encoder\n");
+		return 1;
+	}
+
+	/* Use first 20 byte for configuration */
+	if(size < 20){
+		FLAC__stream_encoder_delete(encoder);
+		return 0;
+	}
+
+	/* First 3 byte for sample rate, 4th byte for channels, 5th byte for bps */
+	sample_rate = ((unsigned)data[0] << 16) + ((unsigned)data[1] << 8) + data[2];
+	channels = data[3];
+	bps = data[4];
+
+	/* Number of samples estimate, format accepts 36-bit max */
+	samples_estimate = ((uint64_t)data[5] << 32) + ((unsigned)data[6] << 24) + ((unsigned)data[7] << 16) + ((unsigned)data[8] << 8) + data[9];
+
+	compression_level = data[10]&0b1111;
+	input_data_width = 1 + (data[10]>>4)%4;
+	samples_in_input = (size-20)/input_data_width;
+	blocksize = ((unsigned)data[11] << 8) + (unsigned)data[12];
+	max_lpc_order = data[13];
+	qlp_coeff_precision = data[14];
+	min_residual_partition_order = data[15] & 0b1111;
+	max_residual_partition_order = data[15] & 0b11110000;
+	metadata_mask = data[16];
+	instruction_set_disable_mask = data[17];
+
+	/* Get array of bools from configuration */
+	for(int i = 0; i < 16; i++)
+		data_bools[i] = data[18+i/8] & (1 << (i % 8));
+
+	ogg = data_bools[0];
+	interleaved = data_bools[1];
+	write_to_file = data_bools[13];
+
+	/* Set input and process parameters */
+	encoder_valid &= FLAC__stream_encoder_set_verify(encoder, data_bools[2]);
+	encoder_valid &= FLAC__stream_encoder_set_channels(encoder, channels);
+	encoder_valid &= FLAC__stream_encoder_set_bits_per_sample(encoder, bps);
+	encoder_valid &= FLAC__stream_encoder_set_sample_rate(encoder, sample_rate);
+	encoder_valid &= FLAC__stream_encoder_set_total_samples_estimate(encoder, samples_estimate);
+	encoder_valid &= FLAC__stream_encoder_disable_instruction_set(encoder, instruction_set_disable_mask);
+	encoder_valid &= FLAC__stream_encoder_set_limit_min_bitrate(encoder, data_bools[15]);
+
+	/* Set compression related parameters */
+	encoder_valid &= FLAC__stream_encoder_set_compression_level(encoder, compression_level);
+	if(data_bools[3]){
+		/* Bias towards regular compression levels */
+		encoder_valid &= FLAC__stream_encoder_set_blocksize(encoder, blocksize);
+		encoder_valid &= FLAC__stream_encoder_set_max_lpc_order(encoder, max_lpc_order);
+		encoder_valid &= FLAC__stream_encoder_set_qlp_coeff_precision(encoder, qlp_coeff_precision);
+		encoder_valid &= FLAC__stream_encoder_set_min_residual_partition_order(encoder, min_residual_partition_order);
+
+		/* With large inputs and expensive options enabled, the fuzzer can get *really* slow.
+		 * Some combinations can make the fuzzer timeout (>60 seconds). However, while combining
+		 * options makes the fuzzer slower, most options do not expose new code when combined.
+		 * Therefore, combining slow options is disabled for large inputs. Any input containing
+		 * more than 65536 * 2 samples (max blocksize, stereo) is considered large
+		 */
+		if(samples_in_input < (2*65536)) {
+			encoder_valid &= FLAC__stream_encoder_set_streamable_subset(encoder, data_bools[4]);
+			encoder_valid &= FLAC__stream_encoder_set_do_qlp_coeff_prec_search(encoder, data_bools[5]);
+			encoder_valid &= FLAC__stream_encoder_set_do_escape_coding(encoder, data_bools[6]);
+			encoder_valid &= FLAC__stream_encoder_set_do_exhaustive_model_search(encoder, data_bools[7]);
+			/* Combining model search, precision search and a high residual partition order is especially
+			 * expensive, so limit that even further. This high partition order can only be set on
+			 * large blocksize and with streamable subset disabled */
+			if(samples_in_input < (2 * 4609) || data_bools[4] || !data_bools[7] || !data_bools[5] || max_residual_partition_order < 9 || blocksize < 4609)
+				encoder_valid &= FLAC__stream_encoder_set_max_residual_partition_order(encoder, max_residual_partition_order);
+		}
+		else {
+			if(!data_bools[4])
+				encoder_valid &= FLAC__stream_encoder_set_streamable_subset(encoder, false);
+			else if(data_bools[6])
+				encoder_valid &= FLAC__stream_encoder_set_do_escape_coding(encoder, true);
+			else if(data_bools[7])
+				encoder_valid &= FLAC__stream_encoder_set_do_exhaustive_model_search(encoder, true);
+			else if(data_bools[5])
+				encoder_valid &= FLAC__stream_encoder_set_do_qlp_coeff_prec_search(encoder, true);
+		}
+		encoder_valid &= FLAC__stream_encoder_set_do_mid_side_stereo(encoder, data_bools[8]);
+		encoder_valid &= FLAC__stream_encoder_set_loose_mid_side_stereo(encoder, data_bools[9]);
+
+		encoder_valid &= FLAC__stream_encoder_disable_constant_subframes(encoder, data_bools[10]);
+		encoder_valid &= FLAC__stream_encoder_disable_fixed_subframes(encoder, data_bools[11]);
+		encoder_valid &= FLAC__stream_encoder_disable_verbatim_subframes(encoder, data_bools[12]);
+	}
+
+	/* Disable alloc check if requested */
+	if(encoder_valid && data_bools[14])
+		alloc_check_threshold = INT32_MAX;
+
+	/* add metadata */
+	if(encoder_valid && (metadata_mask & 1)) {
+		if((metadata[num_metadata] = FLAC__metadata_object_new(FLAC__METADATA_TYPE_STREAMINFO)) == NULL)
+			encoder_valid = false;
+		else
+			num_metadata++;
+	}
+	if(encoder_valid && (metadata_mask & 2) && size > 21){
+		if((metadata[num_metadata] = FLAC__metadata_object_new(FLAC__METADATA_TYPE_PADDING)) == NULL)
+			encoder_valid = false;
+		else {
+			metadata[num_metadata++]->length = (((unsigned)data[20]) << 8) + (unsigned)(data[21]);
+		}
+	}
+	if(encoder_valid && (metadata_mask & 4) && size > 20){
+		FLAC__byte * application_data = (FLAC__byte *)malloc(size-20);
+		if(0 != application_data && ((metadata[num_metadata] = FLAC__metadata_object_new(FLAC__METADATA_TYPE_APPLICATION)) == NULL))
+			encoder_valid = false;
+		else {
+			memcpy(application_data,data+20,size-20);
+			FLAC__metadata_object_application_set_data(metadata[num_metadata++], application_data, size-20, 0);
+		}
+	}
+	if(encoder_valid && (metadata_mask & 8) && size > 25){
+		if((metadata[num_metadata] = FLAC__metadata_object_new(FLAC__METADATA_TYPE_SEEKTABLE)) == NULL)
+			encoder_valid = false;
+		else {
+			unsigned seekpoint_spacing = ((unsigned)data[22] << 8) + data[23];
+			unsigned total_samples_for_seekpoints = ((unsigned)data[24] << 8) + data[25];
+			FLAC__metadata_object_seektable_template_append_spaced_points_by_samples(metadata[num_metadata++], seekpoint_spacing, total_samples_for_seekpoints);
+		}
+	}
+	if(encoder_valid && (metadata_mask & 16)){
+		if((metadata[num_metadata] = FLAC__metadata_object_new(FLAC__METADATA_TYPE_VORBIS_COMMENT)) != NULL) {
+			bool vorbiscomment_valid = true;
+			/* Append a vorbis comment */
+			if(!FLAC__metadata_object_vorbiscomment_entry_from_name_value_pair(&VorbisCommentField, "COMMENTARY", "Nothing to 🤔 report"))
+				vorbiscomment_valid = false;
+			else {
+				if(FLAC__metadata_object_vorbiscomment_append_comment(metadata[num_metadata], VorbisCommentField, false)) {
+
+					/* Insert a vorbis comment at the first index */
+					if(!FLAC__metadata_object_vorbiscomment_entry_from_name_value_pair(&VorbisCommentField, "COMMENTARY", "Still nothing to report 🤔🤣"))
+						vorbiscomment_valid = false;
+					else
+						if(!FLAC__metadata_object_vorbiscomment_insert_comment(metadata[num_metadata], 0, VorbisCommentField, false)) {
+							free(VorbisCommentField.entry);
+							vorbiscomment_valid = false;
+						}
+				}
+				else {
+					free(VorbisCommentField.entry);
+					vorbiscomment_valid = false;
+				}
+			}
+			if(!vorbiscomment_valid) {
+				FLAC__metadata_object_delete(metadata[num_metadata]);
+				metadata[num_metadata] = 0;
+			}
+			else
+				num_metadata++;
+		}
+	}
+	if(encoder_valid && (metadata_mask & 32)){
+		if((metadata[num_metadata] = FLAC__metadata_object_new(FLAC__METADATA_TYPE_CUESHEET)) != NULL) {
+			if(!FLAC__metadata_object_cuesheet_insert_blank_track(metadata[num_metadata],0)) {
+				FLAC__metadata_object_delete(metadata[num_metadata]);
+				metadata[num_metadata] = 0;
+			}
+			else {
+				if(!FLAC__metadata_object_cuesheet_track_insert_blank_index(metadata[num_metadata],0,0)) {
+					FLAC__metadata_object_delete(metadata[num_metadata]);
+					metadata[num_metadata] = 0;
+				}
+				else {
+					metadata[num_metadata]->data.cue_sheet.tracks[0].number = 1;
+					num_metadata++;
+				}
+			}
+		}
+	}
+	if(encoder_valid && (metadata_mask & 64)){
+		if((metadata[num_metadata] = FLAC__metadata_object_new(FLAC__METADATA_TYPE_PICTURE)) != NULL) {
+			num_metadata++;
+		}
+	}
+	if(encoder_valid && (metadata_mask & 128)){
+		if((metadata[num_metadata] = FLAC__metadata_object_new(FLAC__METADATA_TYPE_UNDEFINED)) != NULL) {
+			metadata[num_metadata]->length = 24;
+			metadata[num_metadata]->data.unknown.data = (FLAC__byte *)calloc(24, 1);
+			num_metadata++;
+		}
+	}
+
+	if(num_metadata && encoder_valid)
+			encoder_valid = FLAC__stream_encoder_set_metadata(encoder, metadata, num_metadata);
+
+	/* initialize encoder */
+	if(encoder_valid) {
+		FLAC__StreamEncoderInitStatus init_status;
+		if(ogg)
+			if(write_to_file)
+				init_status = FLAC__stream_encoder_init_ogg_file(encoder, "/tmp/tmp.flac", NULL, NULL);
+			else
+				init_status = FLAC__stream_encoder_init_ogg_stream(encoder, NULL, write_callback, NULL, NULL, NULL, NULL);
+		else
+			if(write_to_file)
+				init_status = FLAC__stream_encoder_init_file(encoder, "/tmp/tmp.flac", NULL, NULL);
+			else
+				init_status = FLAC__stream_encoder_init_stream(encoder, write_callback, NULL, NULL, NULL, NULL);
+		if(init_status != FLAC__STREAM_ENCODER_INIT_STATUS_OK) {
+			encoder_valid = false;
+		}
+	}
+
+
+	/* send samples to encoder */
+	if(encoder_valid && size > (input_data_width*channels+26)) {
+		unsigned samples = (size - 26)/input_data_width/channels;
+		const uint8_t * pcm_data = data + 26;
+		int32_t * data_as_int32 = (int32_t *)malloc(4*samples*channels);
+		if(0 != data_as_int32){
+			for(unsigned i = 0; i < samples*channels; i++)
+				if(input_data_width == 1)
+					data_as_int32[i] = (int32_t)pcm_data[i] - 0x80;
+				else if(input_data_width == 2)
+					data_as_int32[i] = (((int32_t)pcm_data[i*2] << 8) + pcm_data[i*2+1]) - 0x8000;
+				else if(input_data_width == 3)
+					data_as_int32[i] = (((int32_t)pcm_data[i*3] << 16) + ((int32_t)pcm_data[i*3+1] << 8) + pcm_data[i*3+2]) - 0x800000;
+				else if(input_data_width == 4)
+					data_as_int32[i] = (((int64_t)pcm_data[i*4] << 24) + ((int32_t)pcm_data[i*4+1] << 16) + ((int32_t)pcm_data[i*4+2] << 8) + pcm_data[i*4+3]) - 0x80000000;
+
+			/* feed samples to encoder */
+			if(interleaved)
+				encoder_valid = FLAC__stream_encoder_process_interleaved(encoder, data_as_int32, samples);
+			else {
+				encoder_valid = FLAC__stream_encoder_process(encoder, (const int32_t*[]){data_as_int32,
+				                                                       data_as_int32+samples,
+				                                                       data_as_int32+samples*2,
+				                                                       data_as_int32+samples*3,
+				                                                       data_as_int32+samples*4, data_as_int32+samples*5, data_as_int32+samples*6, data_as_int32+samples*7}, samples);
+			}
+			free(data_as_int32);
+		}
+		else {
+			encoder_valid = false;
+		}
+	}
+
+	state = FLAC__stream_encoder_get_state(encoder);
+	if(!(state == FLAC__STREAM_ENCODER_OK ||
+	     state == FLAC__STREAM_ENCODER_UNINITIALIZED ||
+	     state == FLAC__STREAM_ENCODER_CLIENT_ERROR ||
+	     ((state == FLAC__STREAM_ENCODER_MEMORY_ALLOCATION_ERROR ||
+               state == FLAC__STREAM_ENCODER_FRAMING_ERROR ||
+	       (state == FLAC__STREAM_ENCODER_VERIFY_DECODER_ERROR &&
+	        FLAC__stream_encoder_get_verify_decoder_state(encoder) == FLAC__STREAM_DECODER_MEMORY_ALLOCATION_ERROR)) &&
+	      alloc_check_threshold < INT32_MAX))) {
+		fprintf(stderr,"-----\nERROR: stream encoder returned %s\n-----\n",FLAC__stream_encoder_get_resolved_state_string(encoder));
+		if(state == FLAC__STREAM_ENCODER_VERIFY_MISMATCH_IN_AUDIO_DATA) {
+			uint32_t frame_number, channel, sample_number;
+			FLAC__int32 expected, got;
+			FLAC__stream_encoder_get_verify_decoder_error_stats(encoder, NULL, &frame_number, &channel, &sample_number, &expected, &got);
+			fprintf(stderr,"Frame number %d\nChannel %d\n Sample number %d\nExpected value %d\nGot %d\n", frame_number, channel, sample_number, expected, got);
+		}
+		abort();
+	}
+
+	FLAC__stream_encoder_finish(encoder);
+
+	/* now that encoding is finished, the metadata can be freed */
+	for(unsigned i = 0; i < 16; i++)
+		if(0 != metadata[i])
+			FLAC__metadata_object_delete(metadata[i]);
+
+	FLAC__stream_encoder_delete(encoder);
+
+	return 0;
+}
+