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/* PipeWire
* Copyright © 2016 Axis Communications <dev-gstreamer@axis.com>
* @author Linus Svensson <linus.svensson@axis.com>
* Copyright © 2018 Wim Taymans
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <string.h>
#include <stdio.h>
#include <errno.h>
#include <pipewire/pipewire.h>
#include <pipewire/command.h>
#include <pipewire/private.h>
#include "daemon/daemon-config.h"
#define DEFAULT_CONFIG_FILE PIPEWIRE_CONFIG_DIR "/pipewire.conf"
static int
parse_line(struct pw_daemon_config *config,
const char *filename, char *line, unsigned int lineno, char **err)
{
struct pw_command *command = NULL;
char *p;
int ret = 0;
char *local_err = NULL;
/* search for comments */
if ((p = strchr(line, '#')))
*p = '\0';
/* remove whitespaces */
pw_strip(line, "\n\r \t");
if (*line == '\0') /* empty line */
return 0;
if ((command = pw_command_parse(line, &local_err)) == NULL) {
asprintf(err, "%s:%u: %s", filename, lineno, local_err);
free(local_err);
ret = -EINVAL;
} else {
spa_list_append(&config->commands, &command->link);
}
return ret;
}
/**
* pw_daemon_config_new:
*
* Returns a new empty #struct pw_daemon_config.
*/
struct pw_daemon_config *pw_daemon_config_new(void)
{
struct pw_daemon_config *config;
config = calloc(1, sizeof(struct pw_daemon_config));
spa_list_init(&config->commands);
return config;
}
/**
* pw_daemon_config_free:
* @config: A #struct pw_daemon_config
*
* Free all resources associated to @config.
*/
void pw_daemon_config_free(struct pw_daemon_config *config)
{
struct pw_command *cmd, *tmp;
spa_list_for_each_safe(cmd, tmp, &config->commands, link)
pw_command_free(cmd);
free(config);
}
/**
* pw_daemon_config_load_file:
* @config: A #struct pw_daemon_config
* @filename: A filename
* @err: Return location for an error string
*
* Loads PipeWire config from @filename.
*
* Returns: 0 on success, otherwise < 0 and @err is set.
*/
int pw_daemon_config_load_file(struct pw_daemon_config *config, const char *filename, char **err)
{
unsigned int line;
FILE *f;
char buf[4096];
pw_log_debug("deamon-config %p: loading configuration file '%s'", config, filename);
if ((f = fopen(filename, "r")) == NULL) {
asprintf(err, "failed to open configuration file '%s': %s", filename,
strerror(errno));
goto open_error;
}
line = 0;
while (!feof(f)) {
if (!fgets(buf, sizeof(buf), f)) {
if (feof(f))
break;
asprintf(err, "failed to read configuration file '%s': %s",
filename, strerror(errno));
goto read_error;
}
line++;
if (parse_line(config, filename, buf, line, err) != 0)
goto parse_failed;
}
fclose(f);
return 0;
parse_failed:
read_error:
fclose(f);
open_error:
return -EINVAL;
}
/**
* pw_daemon_config_load:
* @config: A #struct pw_daemon_config
* @err: Return location for a #GError, or %NULL
*
* Loads the default config file for PipeWire. The filename can be overridden with
* an evironment variable PIPEWIRE_CONFIG_FILE.
*
* Return: 0 on success, otherwise < 0 and @err is set.
*/
int pw_daemon_config_load(struct pw_daemon_config *config, char **err)
{
const char *filename;
filename = getenv("PIPEWIRE_CONFIG_FILE");
if (filename != NULL && *filename != '\0') {
pw_log_debug("PIPEWIRE_CONFIG_FILE set to: %s", filename);
} else {
filename = DEFAULT_CONFIG_FILE;
}
return pw_daemon_config_load_file(config, filename, err);
}
/**
* pw_daemon_config_run_commands:
* @config: A #struct pw_daemon_config
* @core: A #struct pw_core
*
* Run all commands that have been parsed. The list of commands will be cleared
* when this function has been called.
*
* Returns: 0 if all commands where executed with success, otherwise < 0.
*/
int pw_daemon_config_run_commands(struct pw_daemon_config *config, struct pw_core *core)
{
char *err = NULL;
int ret = 0;
struct pw_command *command, *tmp;
spa_list_for_each(command, &config->commands, link) {
if ((ret = pw_command_run(command, core, &err)) < 0) {
pw_log_warn("could not run command %s: %s", command->args[0], err);
free(err);
break;
}
}
spa_list_for_each_safe(command, tmp, &config->commands, link)
pw_command_free(command);
return ret;
}
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