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/*
* This file is part of mpv.
*
* mpv 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.
*
* 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with mpv. If not, see <http://www.gnu.org/licenses/>.
*/
#include <string.h>
#include <strings.h>
#include <sys/types.h>
#include <dirent.h>
#include <math.h>
#include <pthread.h>
#include <assert.h>
#include "config.h"
#include "osdep/io.h"
#include "osdep/threads.h"
#include "common/common.h"
#include "common/msg.h"
#include "options/path.h"
#include "misc/bstr.h"
#include "core.h"
#include "client.h"
#include "libmpv/client.h"
extern const struct mp_scripting mp_scripting_lua;
static const struct mp_scripting *const scripting_backends[] = {
#if HAVE_LUA
&mp_scripting_lua,
#endif
NULL
};
static char *script_name_from_filename(void *talloc_ctx, const char *fname)
{
fname = mp_basename(fname);
if (fname[0] == '@')
fname += 1;
char *name = talloc_strdup(talloc_ctx, fname);
// Drop file extension
char *dot = strrchr(name, '.');
if (dot)
*dot = '\0';
// Turn it into a safe identifier - this is used with e.g. dispatching
// input via: "send scriptname ..."
for (int n = 0; name[n]; n++) {
char c = name[n];
if (!(c >= 'A' && c <= 'Z') && !(c >= 'a' && c <= 'z') &&
!(c >= '0' && c <= '9'))
name[n] = '_';
}
return talloc_asprintf(talloc_ctx, "%s", name);
}
struct thread_arg {
struct mp_log *log;
const struct mp_scripting *backend;
mpv_handle *client;
const char *fname;
};
static void *script_thread(void *p)
{
pthread_detach(pthread_self());
struct thread_arg *arg = p;
char name[90];
snprintf(name, sizeof(name), "lua (%s)", mpv_client_name(arg->client));
mpthread_set_name(name);
if (arg->backend->load(arg->client, arg->fname) < 0)
MP_ERR(arg, "Could not load script %s\n", arg->fname);
MP_VERBOSE(arg, "Exiting...\n");
mpv_detach_destroy(arg->client);
talloc_free(arg);
return NULL;
}
static void wait_loaded(struct MPContext *mpctx)
{
while (!mp_clients_all_initialized(mpctx))
mp_idle(mpctx);
}
static void mp_load_script(struct MPContext *mpctx, const char *fname)
{
char *ext = mp_splitext(fname, NULL);
const struct mp_scripting *backend = NULL;
for (int n = 0; scripting_backends[n]; n++) {
const struct mp_scripting *b = scripting_backends[n];
if (ext && strcasecmp(ext, b->file_ext) == 0) {
backend = b;
break;
}
}
if (!backend) {
MP_VERBOSE(mpctx, "Can't load unknown script: %s\n", fname);
return;
}
struct thread_arg *arg = talloc_ptrtype(NULL, arg);
char *name = script_name_from_filename(arg, fname);
*arg = (struct thread_arg){
.fname = talloc_strdup(arg, fname),
.backend = backend,
// Create the client before creating the thread; otherwise a race
// condition could happen, where MPContext is destroyed while the
// thread tries to create the client.
.client = mp_new_client(mpctx->clients, name),
};
if (!arg->client) {
talloc_free(arg);
return;
}
arg->log = mp_client_get_log(arg->client);
MP_VERBOSE(arg, "Loading script %s...\n", fname);
pthread_t thread;
if (pthread_create(&thread, NULL, script_thread, arg))
talloc_free(arg);
wait_loaded(mpctx);
MP_VERBOSE(mpctx, "Done loading %s.\n", fname);
return;
}
static int compare_filename(const void *pa, const void *pb)
{
char *a = (char *)pa;
char *b = (char *)pb;
return strcmp(a, b);
}
static char **list_script_files(void *talloc_ctx, char *path)
{
char **files = NULL;
int count = 0;
DIR *dp = opendir(path);
if (!dp)
return NULL;
struct dirent *ep;
while ((ep = readdir(dp))) {
char *fname = mp_path_join(talloc_ctx, bstr0(path), bstr0(ep->d_name));
struct stat s;
if (!stat(fname, &s) && S_ISREG(s.st_mode))
MP_TARRAY_APPEND(talloc_ctx, files, count, fname);
}
closedir(dp);
if (files)
qsort(files, count, sizeof(char *), compare_filename);
MP_TARRAY_APPEND(talloc_ctx, files, count, NULL);
return files;
}
void mp_load_scripts(struct MPContext *mpctx)
{
// Load scripts from options
if (mpctx->opts->lua_load_osc)
mp_load_script(mpctx, "@osc.lua");
if (mpctx->opts->lua_load_ytdl)
mp_load_script(mpctx, "@ytdl_hook.lua");
char **files = mpctx->opts->script_files;
for (int n = 0; files && files[n]; n++) {
if (files[n][0])
mp_load_script(mpctx, files[n]);
}
if (!mpctx->opts->auto_load_scripts)
return;
// Load all scripts
void *tmp = talloc_new(NULL);
const char *dirs[] = {"scripts", "lua", NULL}; // 'lua' is deprecated
int warning_displayed = 0;
for (int s = 0; dirs[s]; s++) {
char **scriptsdir = mp_find_all_config_files(tmp, mpctx->global, dirs[s]);
for (int i = 0; scriptsdir && scriptsdir[i]; i++) {
files = list_script_files(tmp, scriptsdir[i]);
for (int n = 0; files && files[n]; n++) {
if (s && !warning_displayed) {
warning_displayed = 1;
char *cfg = mp_find_config_file(tmp, mpctx->global, "");
if (cfg)
cfg = mp_path_join(tmp, bstr0(cfg), bstr0("scripts"));
MP_WARN(mpctx, "Warning: '%s' - lua subdir is deprecated.\n"
"Please move scripts to '%s'.\n",
files[n], cfg ? cfg : "/scripts");
}
mp_load_script(mpctx, files[n]);
}
}
}
talloc_free(tmp);
}
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