config_t *cfg_open(const char *path)
{
FILE *file = NULL;
config_t *config = (config_t*)malloc(sizeof(config_t));
if (config == NULL)
{
return NULL;
}
if (path == NULL || path[0] == 0)
{
config_init(config);
return config;
}
file = fopen(path,"r");
if (file == NULL)
{
config_init(config);
return config;
}
// Not initializing produces a crash
config_init(config);
if (config_read(config,file) != CONFIG_TRUE)
{
#ifdef DEBUG
if (config_error_type(config) == CONFIG_ERR_FILE_IO)
{
printf("Error opening configuration file.\n");
}
else
{
printf("Error parsing configuration file.\n");
printf("Line: %d\n", config_error_line(config));
printf("Text: %s\n", config_error_text(config));
}
#endif
// Destroy the config and initialize a new one
config_destroy(config);
config_init(config);
}
fclose(file);
config_set_tab_width(config,0);
return config;
}
/**
* Re-reads configuration from the given file
*/
int read_config() {
config_t cfg;
config_init(&cfg);
if (config_read_file(&cfg, conf.config_file) == CONFIG_FALSE) {
if (config_error_type(&cfg) == CONFIG_ERR_FILE_IO) {
log_error("Configuration file not found: %s", conf.config_file);
config_destroy(&cfg);
return -1;
}
log_error("%s:%d - %s", config_error_file(&cfg), config_error_line(&cfg), config_error_text(&cfg));
config_destroy(&cfg);
return -1;
}
int intVal;
const char* charVal;
if (config_lookup_int(&cfg, "num_connections", &intVal) == CONFIG_TRUE) {
conf.num_connections = intVal;
}
if (config_lookup_int(&cfg, "report_freq", &intVal) == CONFIG_TRUE) {
conf.report_freq = intVal;
}
if (config_lookup_int(&cfg, "packet_size", &intVal) == CONFIG_TRUE) {
if (intVal > MAXPACKET) {
log_error("packet_size: %d exceeds maximal packet size (%d)", intVal, MAXPACKET);
config_destroy(&cfg);
return -1;
}
conf.packet_size = intVal;
}
if (config_lookup_int(&cfg, "packets_count", &intVal) == CONFIG_TRUE) {
conf.packets_count = intVal;
}
if (config_lookup_string(&cfg, "reports_dir", &charVal) == CONFIG_TRUE) {
free(conf.reports_dir);
conf.reports_dir = strdup(charVal);
}
if (config_lookup_string(&cfg, "hosts_file", &charVal) == CONFIG_TRUE) {
free(conf.hosts_file);
conf.hosts_file = strdup(charVal);
}
if (config_lookup_string(&cfg, "log_file", &charVal) == CONFIG_TRUE) {
free(conf.log_file);
conf.log_file = strdup(charVal);
}
config_destroy(&cfg);
if (read_hosts() == -1) {
return -1;
}
return 0;
}
int parse_options(int argc, char **argv) {
// there are potential memory leaks here -- it's called a second time, previously allocated strings will dangle.
char *raw_service_name = NULL; /* Used to pick up the service name before possibly expanding it */
char *stuffing = NULL; /* used for picking up the stuffing option */
signed char c; /* used for argument parsing */
int i = 0; /* used for tracking options */
poptContext optCon; /* context for parsing command-line options */
struct poptOption optionsTable[] = {
{"verbose", 'v', POPT_ARG_NONE, NULL, 'v', NULL},
{"disconnectFromOutput", 'D', POPT_ARG_NONE, NULL, 0, NULL},
{"reconnectToOutput", 'R', POPT_ARG_NONE, NULL, 0, NULL},
{"kill", 'k', POPT_ARG_NONE, NULL, 0, NULL},
{"daemon", 'd', POPT_ARG_NONE, &config.daemonise, 0, NULL},
{"configfile", 'c', POPT_ARG_STRING, &config.configfile, 0, NULL},
{"statistics", 0, POPT_ARG_NONE, &config.statistics_requested, 0, NULL},
{"version", 'V', POPT_ARG_NONE, NULL, 0, NULL},
{"port", 'p', POPT_ARG_INT, &config.port, 0, NULL},
{"name", 'a', POPT_ARG_STRING, &raw_service_name, 0, NULL},
{"output", 'o', POPT_ARG_STRING, &config.output_name, 0, NULL},
{"on-start", 'B', POPT_ARG_STRING, &config.cmd_start, 0, NULL},
{"on-stop", 'E', POPT_ARG_STRING, &config.cmd_stop, 0, NULL},
{"wait-cmd", 'w', POPT_ARG_NONE, &config.cmd_blocking, 0, NULL},
{"mdns", 'm', POPT_ARG_STRING, &config.mdns_name, 0, NULL},
{"latency", 'L', POPT_ARG_INT, &config.userSuppliedLatency, 0, NULL},
{"AirPlayLatency", 'A', POPT_ARG_INT, &config.AirPlayLatency, 0, NULL},
{"iTunesLatency", 'i', POPT_ARG_INT, &config.iTunesLatency, 0, NULL},
{"forkedDaapdLatency", 0, POPT_ARG_INT, &config.ForkedDaapdLatency, 0, NULL},
{"stuffing", 'S', POPT_ARG_STRING, &stuffing, 'S', NULL},
{"resync", 'r', POPT_ARG_INT, &config.resyncthreshold, 0, NULL},
{"timeout", 't', POPT_ARG_INT, &config.timeout, 't', NULL},
{"password", 0, POPT_ARG_STRING, &config.password, 0, NULL},
{"tolerance", 0, POPT_ARG_INT, &config.tolerance, 0, NULL},
#ifdef CONFIG_METADATA
{"metadata-pipename", 'M', POPT_ARG_STRING, &config.metadata_pipename, 'M', NULL},
{"get-coverart", 'g', POPT_ARG_NONE, &config.get_coverart, 'g', NULL},
#endif
POPT_AUTOHELP
{NULL, 0, 0, NULL, 0}};
// we have to parse the command line arguments to look for a config file
int optind;
optind = argc;
int j;
for (j = 0; j < argc; j++)
if (strcmp(argv[j], "--") == 0)
optind = j;
optCon = poptGetContext(NULL, optind, (const char **)argv, optionsTable, 0);
poptSetOtherOptionHelp(optCon, "[OPTIONS]* ");
/* Now do options processing just to get a debug level */
debuglev = 0;
while ((c = poptGetNextOpt(optCon)) >= 0) {
switch (c) {
case 'v':
debuglev++;
break;
}
}
if (c < -1) {
die("%s: %s", poptBadOption(optCon, POPT_BADOPTION_NOALIAS), poptStrerror(c));
}
config_setting_t *setting;
const char *str=0;
int value=0;
debug(1,"Looking for the configuration file \"%s\".",config.configfile);
config_init(&config_file_stuff);
char *config_file_real_path = realpath(config.configfile, NULL);
if (config_file_real_path==NULL) {
debug(2,"Can't resolve the configuration file \"%s\".",config.configfile);
} else {
debug(2, "Looking for configuration file at full path \"%s\"", config_file_real_path);
/* Read the file. If there is an error, report it and exit. */
if (config_read_file(&config_file_stuff, config_file_real_path)) {
// make config.cfg point to it
config.cfg = &config_file_stuff;
/* Get the Service Name. */
if (config_lookup_string(config.cfg, "general.name", &str)) {
raw_service_name = (char *)str;
}
/* Get the Daemonize setting. */
if (config_lookup_string(config.cfg, "general.daemonize", &str)) {
if (strcasecmp(str, "no") == 0)
config.daemonise = 0;
else if (strcasecmp(str, "yes") == 0)
config.daemonise = 1;
else
die("Invalid daemonize option choice \"%s\". It should be \"yes\" or \"no\"");
}
/* Get the mdns_backend setting. */
if (config_lookup_string(config.cfg, "general.mdns_backend", &str))
config.mdns_name = (char *)str;
/* Get the output_backend setting. */
if (config_lookup_string(config.cfg, "general.output_backend", &str))
config.output_name = (char *)str;
/* Get the port setting. */
if (config_lookup_int(config.cfg, "general.port", &value)) {
if ((value < 0) || (value > 65535))
die("Invalid port number \"%sd\". It should be between 0 and 65535, default is 5000",
value);
else
config.port = value;
}
/* Get the udp port base setting. */
if (config_lookup_int(config.cfg, "general.udp_port_base", &value)) {
if ((value < 0) || (value > 65535))
die("Invalid port number \"%sd\". It should be between 0 and 65535, default is 6001",
value);
else
config.udp_port_base = value;
}
/* Get the udp port range setting. This is number of ports that will be tried for free ports , starting at the port base. Only three ports are needed. */
if (config_lookup_int(config.cfg, "general.udp_port_range", &value)) {
if ((value < 0) || (value > 65535))
die("Invalid port range \"%sd\". It should be between 0 and 65535, default is 100",
value);
else
config.udp_port_range = value;
}
/* Get the password setting. */
if (config_lookup_string(config.cfg, "general.password", &str))
config.password = (char *)str;
if (config_lookup_string(config.cfg, "general.interpolation", &str)) {
if (strcasecmp(str, "basic") == 0)
config.packet_stuffing = ST_basic;
else if (strcasecmp(str, "soxr") == 0)
config.packet_stuffing = ST_soxr;
else
die("Invalid interpolation option choice \"%s\". It should be \"basic\" or \"soxr\"");
}
/* Get the statistics setting. */
if (config_lookup_string(config.cfg, "general.statistics", &str)) {
if (strcasecmp(str, "no") == 0)
config.statistics_requested = 0;
else if (strcasecmp(str, "yes") == 0)
config.statistics_requested = 1;
else
die("Invalid statistics option choice \"%s\". It should be \"yes\" or \"no\"");
}
/* Get the drift tolerance setting. */
if (config_lookup_int(config.cfg, "general.drift", &value))
config.tolerance = value;
/* Get the resync setting. */
if (config_lookup_int(config.cfg, "general.resync_threshold", &value))
config.resyncthreshold = value;
/* Get the verbosity setting. */
if (config_lookup_int(config.cfg, "general.log_verbosity", &value)) {
if ((value >= 0) && (value <= 3))
debuglev = value;
else
die("Invalid log verbosity setting option choice \"%d\". It should be between 0 and 3, "
"inclusive.",
value);
}
/* Get the ignore_volume_control setting. */
if (config_lookup_string(config.cfg, "general.ignore_volume_control", &str)) {
if (strcasecmp(str, "no") == 0)
config.ignore_volume_control = 0;
else if (strcasecmp(str, "yes") == 0)
config.ignore_volume_control = 1;
else
die("Invalid ignore_volume_control option choice \"%s\". It should be \"yes\" or \"no\"");
}
/* Get the playback_mode setting */
if (config_lookup_string(config.cfg, "general.playback_mode", &str)) {
if (strcasecmp(str, "stereo") == 0)
config.playback_mode = ST_stereo;
else if (strcasecmp(str, "mono") == 0)
config.playback_mode = ST_mono;
else
die("Invalid playback_mode choice \"%s\". It should be \"stereo\" (default) or \"mono\"");
}
/* Get the regtype -- the service type and protocol, separated by a dot. Default is "_raop._tcp" */
if (config_lookup_string(config.cfg, "general.regtype", &str))
config.regtype = strdup(str);
/* Get the volume range, in dB, that should be used If not set, it means you just use the range set by the mixer. */
if (config_lookup_int(config.cfg, "general.volume_range_db", &value)) {
if ((value < 30) || (value > 150))
die("Invalid volume range \"%sd\". It should be between 30 and 150 dB. Zero means use the mixer's native range",
value);
else
config.volume_range_db = value;
}
/* Get the default latency. Deprecated! */
if (config_lookup_int(config.cfg, "latencies.default", &value))
config.userSuppliedLatency = value;
/* Get the itunes latency. Deprecated! */
if (config_lookup_int(config.cfg, "latencies.itunes", &value))
config.iTunesLatency = value;
/* Get the AirPlay latency. Deprecated! */
if (config_lookup_int(config.cfg, "latencies.airplay", &value))
config.AirPlayLatency = value;
/* Get the forkedDaapd latency. Deprecated! */
if (config_lookup_int(config.cfg, "latencies.forkedDaapd", &value))
config.ForkedDaapdLatency = value;
#ifdef CONFIG_METADATA
/* Get the metadata setting. */
if (config_lookup_string(config.cfg, "metadata.enabled", &str)) {
if (strcasecmp(str, "no") == 0)
config.metadata_enabled = 0;
else if (strcasecmp(str, "yes") == 0)
config.metadata_enabled = 1;
else
die("Invalid metadata enabled option choice \"%s\". It should be \"yes\" or \"no\"");
}
if (config_lookup_string(config.cfg, "metadata.include_cover_art", &str)) {
if (strcasecmp(str, "no") == 0)
config.get_coverart = 0;
else if (strcasecmp(str, "yes") == 0)
config.get_coverart = 1;
else
die("Invalid metadata include_cover_art option choice \"%s\". It should be \"yes\" or "
"\"no\"");
}
if (config_lookup_string(config.cfg, "metadata.pipe_name", &str)) {
config.metadata_pipename = (char *)str;
}
if (config_lookup_string(config.cfg, "metadata.socket_address", &str)) {
config.metadata_sockaddr = (char *)str;
}
if (config_lookup_int(config.cfg, "metadata.socket_port", &value)) {
config.metadata_sockport = value;
}
config.metadata_sockmsglength = 500;
if (config_lookup_int(config.cfg, "metadata.socket_msglength", &value)) {
config.metadata_sockmsglength = value < 500 ? 500 : value > 65000 ? 65000 : value;
}
if (config_lookup_int(config.cfg, "metadata.pipe_timeout", &value)) {
if ((value < 1) || (value > 150000))
die("Invalid timeout range \"%sd\". It should be in the range 1 to 150,000 milliseconds.",
value);
else
config.metadata_pipe_timeout = value;
}
#endif
if (config_lookup_string(config.cfg, "sessioncontrol.run_this_before_play_begins", &str)) {
config.cmd_start = (char *)str;
}
if (config_lookup_string(config.cfg, "sessioncontrol.run_this_after_play_ends", &str)) {
config.cmd_stop = (char *)str;
}
if (config_lookup_string(config.cfg, "sessioncontrol.wait_for_completion", &str)) {
if (strcasecmp(str, "no") == 0)
config.cmd_blocking = 0;
else if (strcasecmp(str, "yes") == 0)
config.cmd_blocking = 1;
else
die("Invalid session control wait_for_completion option choice \"%s\". It should be "
"\"yes\" or \"no\"");
}
if (config_lookup_string(config.cfg, "sessioncontrol.allow_session_interruption", &str)) {
config.dont_check_timeout = 0; // this is for legacy -- only set by -t 0
if (strcasecmp(str, "no") == 0)
config.allow_session_interruption = 0;
else if (strcasecmp(str, "yes") == 0)
config.allow_session_interruption = 1;
else
die("Invalid session control allow_interruption option choice \"%s\". It should be \"yes\" "
"or \"no\"");
}
if (config_lookup_int(config.cfg, "sessioncontrol.session_timeout", &value)) {
config.timeout = value;
config.dont_check_timeout = 0; // this is for legacy -- only set by -t 0
}
} else {
if (config_error_type(&config_file_stuff) == CONFIG_ERR_FILE_IO)
debug(1, "Error reading configuration file \"%s\": \"%s\".",
config_error_file(&config_file_stuff), config_error_text(&config_file_stuff));
else {
die("Line %d of the configuration file \"%s\":\n%s", config_error_line(&config_file_stuff),
config_error_file(&config_file_stuff), config_error_text(&config_file_stuff));
}
}
free(config_file_real_path);
}
// now, do the command line options again, but this time do them fully -- it's a unix convention that command line
// arguments have precedence over configuration file settings.
optind = argc;
for (j = 0; j < argc; j++)
if (strcmp(argv[j], "--") == 0)
optind = j;
optCon = poptGetContext(NULL, optind, (const char **)argv, optionsTable, 0);
poptSetOtherOptionHelp(optCon, "[OPTIONS]* ");
/* Now do options processing, get portname */
int tdebuglev = 0;
while ((c = poptGetNextOpt(optCon)) >= 0) {
switch (c) {
case 'v':
tdebuglev++;
break;
case 't':
if (config.timeout == 0) {
config.dont_check_timeout = 1;
config.allow_session_interruption = 1;
} else {
config.dont_check_timeout = 0;
config.allow_session_interruption = 0;
}
break;
#ifdef CONFIG_METADATA
case 'M':
config.metadata_enabled = 1;
break;
case 'g':
if (config.metadata_enabled == 0)
die("If you want to get cover art, you must also select the --metadata-pipename option.");
break;
#endif
case 'S':
if (strcmp(stuffing, "basic") == 0)
config.packet_stuffing = ST_basic;
else if (strcmp(stuffing, "soxr") == 0)
#ifdef HAVE_LIBSOXR
config.packet_stuffing = ST_soxr;
#else
die("soxr option not available -- this version of shairport-sync was built without libsoxr "
"support");
#endif
else
die("Illegal stuffing option \"%s\" -- must be \"basic\" or \"soxr\"", stuffing);
break;
}
}
odesys_t *
odesys_parse_cfg_from_buffer_ctor (const char *buffer)
/* Parse the buffer and return an odesys_t object fully initialized
and ready to use. */
{
config_t cfg;
odesys_t *odesys = NULL;
molecule_t *molecule = NULL;
laser_collection_t *lasers = NULL;
/* Parse configurtion file into a libconfig config_t object. */
config_init (&cfg);
if (config_read_string (&cfg, buffer) == CONFIG_FALSE)
{
switch (config_error_type (&cfg))
{
case CONFIG_ERR_PARSE:
fprintf (stderr, "Error in configuration at line %d\n",
config_error_line (&cfg));
fprintf (stderr, "Error was: \"%s\"\n", config_error_text (&cfg));
return NULL;
default:
fprintf (stderr, "Unknown error in parsing configuration.\n");
return NULL;
}
}
/* Parse the config_t object. */
molecule = molecule_cfg_parse_ctor (&cfg);
if (molecule == NULL)
{
fprintf (stderr,
"Failed to parse molecule information from configuration file.\n");
config_destroy (&cfg);
return NULL;
}
lasers = laser_collection_cfg_parse_ctor (&cfg);
if (lasers == NULL)
{
fprintf (stderr,
"Failed to parse laser information from configuration file.\n");
molecule->dtor (molecule);
config_destroy (&cfg);
return NULL;
}
odesys = odesys_ctor (molecule, lasers);
if (odesys == NULL)
{
fprintf (stderr, "Failed to initialize odesys.\n");
molecule->dtor (molecule);
laser_collection_dtor (lasers);
config_destroy (&cfg);
return NULL;
}
if (odesys_cfg_parse (odesys, &cfg) < 0)
{
fprintf (stderr, "%s %d: Failed to parse odesys information.\n",
__func__, __LINE__);
odesys_dtor (odesys);
config_destroy (&cfg);
return NULL;
}
config_destroy (&cfg);
return odesys;
}
// TODO: error handling
// TODO: better exit point handling
// (freeing resources for valgrind-cleanliness is too tedious at the moment)
void options_parse(int argc, char * argv[], struct Options * options) {
int opt;
// modified when config is loaded on the command line
config_t config;
config_init(&config);
set_default_config(&config);
// only to used for -g: print default config
config_t config_default;
config_init(&config_default);
set_default_config(&config_default);
// -i flag should only print options after all other
// command line arguments have been applied
bool print_options = false;
while (-1 != (opt = getopt(argc, argv, OPTSTR))) {
switch (opt) {
case 'c':
config_set_auto_convert(&config, CONFIG_TRUE);
if (CONFIG_FALSE == config_read_file(&config, optarg)) {
// failure reporting
fprintf(stderr, "Failed to use config file '%s'!\n", optarg);
switch (config_error_type(&config)) {
case CONFIG_ERR_NONE:
fprintf(stderr, "\tno error reported\n"
"\t(This might be a libconfig problem.)\n");
break;
case CONFIG_ERR_FILE_IO:
fprintf(stderr, "\tfile I/O error\n");
break;
case CONFIG_ERR_PARSE:
fprintf(stderr, "\tparse error on line %d:\n"
"\t%s\n",
config_error_line(&config),
config_error_text(&config));
break;
default:
fprintf(stderr, "\tunknown error\n"
"\t(A new libconfig version might have introduced"
" new kinds of warnings.)\n");
}
}
break;
case 'g':
config_write(&config_default, stdout);
// be valgrind-clean
config_destroy(&config_default);
config_destroy(&config);
exit(EXIT_SUCCESS);
break;
case 'i':
print_options = true;
break;
default: /* '?' 'h' */
options_help(*argv);
// be valgrind-clean
config_destroy(&config_default);
config_destroy(&config);
exit(EXIT_FAILURE);
}
}
config2options(&config, options);
// be valgrind-clean
config_destroy(&config_default);
config_destroy(&config);
if (print_options)
options_print(stderr, "", options);
}
