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, 226 insertions, 0 deletions

diff --git a/src/metaflac/operations_shorthand_cuesheet.c b/src/metaflac/operations_shorthand_cuesheet.c
new file mode 100644
index 0000000..13c4ded
--- /dev/null
+++ b/src/metaflac/operations_shorthand_cuesheet.c
@@ -0,0 +1,226 @@
+/* metaflac - Command-line FLAC metadata editor
+ * Copyright (C) 2001-2009  Josh Coalson
+ * Copyright (C) 2011-2023  Xiph.Org Foundation
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#  include <config.h>
+#endif
+
+#include <errno.h>
+#include <string.h>
+#include "options.h"
+#include "utils.h"
+#include "FLAC/assert.h"
+#include "share/grabbag.h"
+#include "share/compat.h"
+#include "operations_shorthand.h"
+
+static FLAC__bool import_cs_from(const char *filename, FLAC__StreamMetadata **cuesheet, const char *cs_filename, FLAC__bool *needs_write, FLAC__uint64 lead_out_offset, unsigned sample_rate, FLAC__bool is_cdda, Argument_AddSeekpoint *add_seekpoint_link);
+static FLAC__bool export_cs_to(const char *filename, const FLAC__StreamMetadata *cuesheet, const char *cs_filename);
+
+FLAC__bool do_shorthand_operation__cuesheet(const char *filename, FLAC__Metadata_Chain *chain, const Operation *operation, FLAC__bool *needs_write)
+{
+	FLAC__bool ok = true;
+	FLAC__StreamMetadata *cuesheet = 0;
+	FLAC__Metadata_Iterator *iterator = FLAC__metadata_iterator_new();
+	FLAC__uint64 lead_out_offset = 0;
+	FLAC__bool is_cdda = false;
+	unsigned sample_rate = 0;
+
+	if(0 == iterator)
+		die("out of memory allocating iterator");
+
+	FLAC__metadata_iterator_init(iterator, chain);
+
+	do {
+		FLAC__StreamMetadata *block = FLAC__metadata_iterator_get_block(iterator);
+		if(block->type == FLAC__METADATA_TYPE_STREAMINFO) {
+			lead_out_offset = block->data.stream_info.total_samples;
+			if(lead_out_offset == 0) {
+				flac_fprintf(stderr, "%s: ERROR: FLAC file must have total_samples set in STREAMINFO in order to import/export cuesheet\n", filename);
+				FLAC__metadata_iterator_delete(iterator);
+				return false;
+			}
+			sample_rate = block->data.stream_info.sample_rate;
+			is_cdda = (block->data.stream_info.channels == 1 || block->data.stream_info.channels == 2) && (block->data.stream_info.bits_per_sample == 16) && (sample_rate == 44100);
+		}
+		else if(block->type == FLAC__METADATA_TYPE_CUESHEET)
+			cuesheet = block;
+	} while(FLAC__metadata_iterator_next(iterator));
+
+	if(lead_out_offset == 0) {
+		flac_fprintf(stderr, "%s: ERROR: FLAC stream has no STREAMINFO block\n", filename);
+		FLAC__metadata_iterator_delete(iterator);
+		return false;
+	}
+
+	if(sample_rate == 0) {
+		flac_fprintf(stderr, "%s: ERROR: cannot parse cuesheet when sample rate is unknown\n", filename);
+		FLAC__metadata_iterator_delete(iterator);
+		return false;
+	}
+
+	switch(operation->type) {
+		case OP__IMPORT_CUESHEET_FROM:
+			if(0 != cuesheet) {
+				flac_fprintf(stderr, "%s: ERROR: FLAC file already has CUESHEET block\n", filename);
+				ok = false;
+			}
+			else {
+				ok = import_cs_from(filename, &cuesheet, operation->argument.import_cuesheet_from.filename, needs_write, lead_out_offset, sample_rate, is_cdda, operation->argument.import_cuesheet_from.add_seekpoint_link);
+				if(ok) {
+					/* append CUESHEET block */
+					while(FLAC__metadata_iterator_next(iterator))
+						;
+					if(!FLAC__metadata_iterator_insert_block_after(iterator, cuesheet)) {
+						print_error_with_chain_status(chain, "%s: ERROR: adding new CUESHEET block to metadata", filename);
+						FLAC__metadata_object_delete(cuesheet);
+						ok = false;
+					}
+				}
+			}
+			break;
+		case OP__EXPORT_CUESHEET_TO:
+			if(0 == cuesheet) {
+				flac_fprintf(stderr, "%s: ERROR: FLAC file has no CUESHEET block\n", filename);
+				ok = false;
+			}
+			else
+				ok = export_cs_to(filename, cuesheet, operation->argument.filename.value);
+			break;
+		default:
+			ok = false;
+			FLAC__ASSERT(0);
+			break;
+	};
+
+	FLAC__metadata_iterator_delete(iterator);
+	return ok;
+}
+
+/*
+ * local routines
+ */
+
+FLAC__bool import_cs_from(const char *filename, FLAC__StreamMetadata **cuesheet, const char *cs_filename, FLAC__bool *needs_write, FLAC__uint64 lead_out_offset, unsigned sample_rate, FLAC__bool is_cdda, Argument_AddSeekpoint *add_seekpoint_link)
+{
+	FILE *f;
+	const char *error_message;
+	char **seekpoint_specification = add_seekpoint_link? &(add_seekpoint_link->specification) : 0;
+	unsigned last_line_read;
+
+	if(0 == cs_filename || strlen(cs_filename) == 0) {
+		flac_fprintf(stderr, "%s: ERROR: empty import file name\n", filename);
+		return false;
+	}
+	if(0 == strcmp(cs_filename, "-"))
+		f = stdin;
+	else
+		f = flac_fopen(cs_filename, "r");
+
+	if(0 == f) {
+		flac_fprintf(stderr, "%s: ERROR: can't open import file %s: %s\n", filename, cs_filename, strerror(errno));
+		return false;
+	}
+
+	*cuesheet = grabbag__cuesheet_parse(f, &error_message, &last_line_read, sample_rate, is_cdda, lead_out_offset);
+
+	if(f != stdin)
+		fclose(f);
+
+	if(0 == *cuesheet) {
+		flac_fprintf(stderr, "%s: ERROR: while parsing cuesheet \"%s\" on line %u: %s\n", filename, cs_filename, last_line_read, error_message);
+		return false;
+	}
+
+	if(!FLAC__format_cuesheet_is_legal(&(*cuesheet)->data.cue_sheet, /*check_cd_da_subset=*/false, &error_message)) {
+		flac_fprintf(stderr, "%s: ERROR parsing cuesheet \"%s\": %s\n", filename, cs_filename, error_message);
+		FLAC__metadata_object_delete(*cuesheet);
+		return false;
+	}
+
+	/* if we're expecting CDDA, warn about non-compliance */
+	if(is_cdda && !FLAC__format_cuesheet_is_legal(&(*cuesheet)->data.cue_sheet, /*check_cd_da_subset=*/true, &error_message)) {
+		flac_fprintf(stderr, "%s: WARNING cuesheet \"%s\" is not audio CD compliant: %s\n", filename, cs_filename, error_message);
+		(*cuesheet)->data.cue_sheet.is_cd = false;
+	}
+
+	/* add seekpoints for each index point if required */
+	if(0 != seekpoint_specification) {
+		char spec[128];
+		unsigned track, indx;
+		const FLAC__StreamMetadata_CueSheet *cs = &(*cuesheet)->data.cue_sheet;
+		if(0 == *seekpoint_specification)
+			*seekpoint_specification = local_strdup("");
+		for(track = 0; track < cs->num_tracks; track++) {
+			const FLAC__StreamMetadata_CueSheet_Track *tr = cs->tracks+track;
+			for(indx = 0; indx < tr->num_indices; indx++) {
+				flac_snprintf(spec, sizeof (spec), "%" PRIu64 ";", (tr->offset + tr->indices[indx].offset));
+				local_strcat(seekpoint_specification, spec);
+			}
+		}
+	}
+
+	*needs_write = true;
+	return true;
+}
+
+FLAC__bool export_cs_to(const char *filename, const FLAC__StreamMetadata *cuesheet, const char *cs_filename)
+{
+	FILE *f;
+	char *ref = 0;
+	size_t reflen;
+
+	if(0 == cs_filename || strlen(cs_filename) == 0) {
+		flac_fprintf(stderr, "%s: ERROR: empty export file name\n", filename);
+		return false;
+	}
+	if(0 == strcmp(cs_filename, "-"))
+		f = stdout;
+	else
+		f = flac_fopen(cs_filename, "w");
+
+	if(0 == f) {
+		flac_fprintf(stderr, "%s: ERROR: can't open export file %s: %s\n", filename, cs_filename, strerror(errno));
+		return false;
+	}
+
+	reflen = strlen(filename) + 7 + 1;
+	if(0 == (ref = malloc(reflen))) {
+		flac_fprintf(stderr, "%s: ERROR: allocating memory\n", filename);
+		if(f != stdout)
+			fclose(f);
+		return false;
+	}
+
+	flac_snprintf(ref, reflen, "\"%s\" FLAC", filename);
+
+	grabbag__cuesheet_emit(f, cuesheet, ref);
+
+	free(ref);
+
+	if(f != stdout)
+		fclose(f);
+#ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
+	/* Delete output file when fuzzing */
+	if(f != stdout)
+		flac_unlink(cs_filename);
+#endif
+
+	return true;
+}