1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
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;
}
|
