mirror of
https://github.com/mpv-player/mpv
synced 2024-12-24 15:52:25 +00:00
9a210ca2d5
Something like "char *s = ...; isdigit(s[0]);" triggers undefined behavior, because char can be signed, and thus s[0] can be a negative value. The is*() functions require unsigned char _or_ EOF. EOF is a special value outside of unsigned char range, thus the argument to the is*() functions can't be a char. This undefined behavior can actually trigger crashes if the implementation of these functions e.g. uses lookup tables, which are then indexed with out-of-range values. Replace all <ctype.h> uses with our own custom mp_is*() functions added with misc/ctype.h. As a bonus, these functions are locale-independent. (Although currently, we _require_ C locale for other reasons.)
145 lines
4.0 KiB
C
145 lines
4.0 KiB
C
/*
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* This file is part of MPlayer.
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*
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* MPlayer is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* MPlayer is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with MPlayer; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <limits.h>
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#include <sys/types.h>
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#include "osdep/io.h"
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#include "talloc.h"
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#include "common/msg.h"
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#include "stream/stream.h"
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#include "misc/ctype.h"
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#include "options/path.h"
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#include "mf.h"
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static void mf_add(mf_t *mf, const char *fname)
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{
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char *entry = talloc_strdup(mf, fname);
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MP_TARRAY_APPEND(mf, mf->names, mf->nr_of_files, entry);
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}
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mf_t *open_mf_pattern(void *talloc_ctx, struct mp_log *log, char *filename)
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{
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int error_count = 0;
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int count = 0;
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mf_t *mf = talloc_zero(talloc_ctx, mf_t);
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mf->log = log;
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if (filename[0] == '@') {
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FILE *lst_f = fopen(filename + 1, "r");
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if (lst_f) {
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char *fname = talloc_size(mf, 512);
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while (fgets(fname, 512, lst_f)) {
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/* remove spaces from end of fname */
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char *t = fname + strlen(fname) - 1;
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while (t > fname && mp_isspace(*t))
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*(t--) = 0;
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if (!mp_path_exists(fname)) {
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mp_verbose(log, "file not found: '%s'\n", fname);
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} else {
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mf_add(mf, fname);
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}
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}
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fclose(lst_f);
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mp_info(log, "number of files: %d\n", mf->nr_of_files);
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goto exit_mf;
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}
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mp_info(log, "%s is not indirect filelist\n", filename + 1);
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}
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if (strchr(filename, ',')) {
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mp_info(log, "filelist: %s\n", filename);
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bstr bfilename = bstr0(filename);
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while (bfilename.len) {
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bstr bfname;
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bstr_split_tok(bfilename, ",", &bfname, &bfilename);
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char *fname2 = bstrdup0(mf, bfname);
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if (!mp_path_exists(fname2))
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mp_verbose(log, "file not found: '%s'\n", fname2);
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else {
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mf_add(mf, fname2);
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}
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talloc_free(fname2);
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}
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mp_info(log, "number of files: %d\n", mf->nr_of_files);
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goto exit_mf;
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}
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char *fname = talloc_size(mf, strlen(filename) + 32);
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if (!strchr(filename, '%')) {
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strcpy(fname, filename);
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if (!strchr(filename, '*'))
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strcat(fname, "*");
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mp_info(log, "search expr: %s\n", fname);
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glob_t gg;
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if (glob(fname, 0, NULL, &gg)) {
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talloc_free(mf);
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return NULL;
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}
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for (int i = 0; i < gg.gl_pathc; i++) {
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if (mp_path_isdir(gg.gl_pathv[i]))
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continue;
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mf_add(mf, gg.gl_pathv[i]);
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}
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mp_info(log, "number of files: %d\n", mf->nr_of_files);
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globfree(&gg);
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goto exit_mf;
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}
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mp_info(log, "search expr: %s\n", filename);
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while (error_count < 5) {
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sprintf(fname, filename, count++);
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if (!mp_path_exists(fname)) {
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error_count++;
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mp_verbose(log, "file not found: '%s'\n", fname);
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} else {
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mf_add(mf, fname);
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}
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}
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mp_info(log, "number of files: %d\n", mf->nr_of_files);
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exit_mf:
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return mf;
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}
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mf_t *open_mf_single(void *talloc_ctx, struct mp_log *log, char *filename)
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{
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mf_t *mf = talloc_zero(talloc_ctx, mf_t);
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mf->log = log;
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mf_add(mf, filename);
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return mf;
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}
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