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/*
* This file is part of mpv.
*
* Get path to config dir/file.
*
* mpv is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* mpv 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with mpv. If not, see <http://www.gnu.org/licenses/>.
*/
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdbool.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <errno.h>
#include "config.h"
#include "misc/path_utils.h"
#include "common/common.h"
#include "common/global.h"
#include "common/msg.h"
#include "options/options.h"
#include "options/path.h"
#include "mpv_talloc.h"
#include "osdep/io.h"
#include "osdep/path.h"
#include "misc/ctype.h"
// In order of decreasing priority: the first has highest priority.
static const mp_get_platform_path_cb path_resolvers[] = {
#if HAVE_COCOA
mp_get_platform_path_mac,
#endif
#if HAVE_DARWIN
mp_get_platform_path_darwin,
#elif !defined(_WIN32) || defined(__CYGWIN__)
mp_get_platform_path_unix,
#endif
#if HAVE_UWP
mp_get_platform_path_uwp,
#elif defined(_WIN32)
mp_get_platform_path_win,
#endif
};
// from highest (most preferred) to lowest priority
static const char *const config_dirs[] = {
"home",
"old_home",
"osxbundle",
"exe_dir",
"global",
};
// Return a platform specific path using a path type as defined in osdep/path.h.
// Keep in mind that the only way to free the return value is freeing talloc_ctx
// (or its children), as this function can return a statically allocated string.
static const char *mp_get_platform_path(void *talloc_ctx,
struct mpv_global *global,
const char *type)
{
assert(talloc_ctx);
if (global->configdir) {
// Return NULL for all platform paths if --no-config is passed
if (!global->configdir[0])
return NULL;
// force all others to NULL, only first returns the path
for (int n = 0; n < MP_ARRAY_SIZE(config_dirs); n++) {
if (strcmp(config_dirs[n], type) == 0)
return (n == 0) ? global->configdir : NULL;
}
}
// Return the native config path if the platform doesn't support the
// type we are trying to fetch.
const char *fallback_type = NULL;
if (!strcmp(type, "cache") || !strcmp(type, "state"))
fallback_type = "home";
for (int n = 0; n < MP_ARRAY_SIZE(path_resolvers); n++) {
const char *path = path_resolvers[n](talloc_ctx, type);
if (path && path[0])
return path;
}
if (fallback_type) {
assert(strcmp(fallback_type, type) != 0);
return mp_get_platform_path(talloc_ctx, global, fallback_type);
}
return NULL;
}
void mp_init_paths(struct mpv_global *global, struct MPOpts *opts)
{
TA_FREEP(&global->configdir);
const char *force_configdir = getenv("MPV_HOME");
if (opts->force_configdir && opts->force_configdir[0])
force_configdir = opts->force_configdir;
if (!opts->load_config)
force_configdir = "";
global->configdir = talloc_strdup(global, force_configdir);
}
char *mp_find_user_file(void *talloc_ctx, struct mpv_global *global,
const char *type, const char *filename)
{
void *tmp = talloc_new(NULL);
char *res = (char *)mp_get_platform_path(tmp, global, type);
if (res)
res = mp_path_join(talloc_ctx, res, filename);
talloc_free(tmp);
MP_DBG(global, "%s path: '%s' -> '%s'\n", type, filename, res ? res : "-");
return res;
}
static char **mp_find_all_config_files_limited(void *talloc_ctx,
struct mpv_global *global,
int max_files,
const char *filename)
{
char **ret = talloc_array(talloc_ctx, char*, 2); // 2 preallocated
int num_ret = 0;
for (int i = 0; i < MP_ARRAY_SIZE(config_dirs); i++) {
const char *dir = mp_get_platform_path(ret, global, config_dirs[i]);
bstr s = bstr0(filename);
while (dir && num_ret < max_files && s.len) {
bstr fn;
bstr_split_tok(s, "|", &fn, &s);
char *file = mp_path_join_bstr(ret, bstr0(dir), fn);
if (mp_path_exists(file)) {
MP_DBG(global, "config path: '%.*s' -> '%s'\n",
BSTR_P(fn), file);
MP_TARRAY_APPEND(NULL, ret, num_ret, file);
} else {
MP_DBG(global, "config path: '%.*s' -/-> '%s'\n",
BSTR_P(fn), file);
}
}
}
MP_TARRAY_GROW(NULL, ret, num_ret);
ret[num_ret] = NULL;
for (int n = 0; n < num_ret / 2; n++)
MPSWAP(char*, ret[n], ret[num_ret - n - 1]);
return ret;
}
char **mp_find_all_config_files(void *talloc_ctx, struct mpv_global *global,
const char *filename)
{
return mp_find_all_config_files_limited(talloc_ctx, global, 64, filename);
}
char *mp_find_config_file(void *talloc_ctx, struct mpv_global *global,
const char *filename)
{
char **l = mp_find_all_config_files_limited(talloc_ctx, global, 1, filename);
char *r = l && l[0] ? talloc_steal(talloc_ctx, l[0]) : NULL;
talloc_free(l);
return r;
}
char *mp_get_user_path(void *talloc_ctx, struct mpv_global *global,
const char *path)
{
if (!path)
return NULL;
char *res = NULL;
bstr bpath = bstr0(path);
if (bstr_eatstart0(&bpath, "~")) {
// parse to "~" <prefix> "/" <rest>
bstr prefix, rest;
if (bstr_split_tok(bpath, "/", &prefix, &rest)) {
const char *rest0 = rest.start; // ok in this case
if (bstr_equals0(prefix, "~")) {
res = mp_find_config_file(talloc_ctx, global, rest0);
if (!res) {
void *tmp = talloc_new(NULL);
const char *p = mp_get_platform_path(tmp, global, "home");
res = mp_path_join_bstr(talloc_ctx, bstr0(p), rest);
talloc_free(tmp);
}
} else if (bstr_equals0(prefix, "")) {
char *home = getenv("HOME");
if (!home)
home = getenv("USERPROFILE");
res = mp_path_join_bstr(talloc_ctx, bstr0(home), rest);
} else if (bstr_eatstart0(&prefix, "~")) {
void *tmp = talloc_new(NULL);
char type[80];
snprintf(type, sizeof(type), "%.*s", BSTR_P(prefix));
const char *p = mp_get_platform_path(tmp, global, type);
res = mp_path_join_bstr(talloc_ctx, bstr0(p), rest);
talloc_free(tmp);
}
}
}
if (!res)
res = talloc_strdup(talloc_ctx, path);
MP_DBG(global, "user path: '%s' -> '%s'\n", path, res);
return res;
}
void mp_mk_user_dir(struct mpv_global *global, const char *type, char *subdir)
{
char *dir = mp_find_user_file(NULL, global, type, subdir);
if (dir)
mp_mkdirp(dir);
talloc_free(dir);
}
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