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#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <getopt.h>
#include <jack/jack.h>
#include <jack/metadata.h>
#include <jack/uuid.h>
#include <jack/session.h>
static int subject_is_client = 0;
static int subject_is_port = 0;
static jack_uuid_t uuid = JACK_UUID_EMPTY_INITIALIZER;
static char* subject = NULL;
static void
show_usage (void)
{
fprintf (stderr, "\nUsage: jack_property [options] UUID [ key [ value [ type ] ] ]\n");
fprintf (stderr, "Set/Display JACK properties (metadata).\n\n");
fprintf (stderr, "Set options:\n");
fprintf (stderr, " -s, --set Set property \"key\" to \"value\" for \"UUID\" with optional MIME type \"type\"\n");
fprintf (stderr, " -d, --delete Remove/delete property \"key\" for \"UUID\"\n");
fprintf (stderr, " -d, --delete UUID Remove/delete all properties for \"UUID\"\n");
fprintf (stderr, " -D, --delete-all Remove/delete all properties\n");
fprintf (stderr, " --client Interpret UUID as a client name, not a UUID\n");
fprintf (stderr, " --port \tInterpret UUID as a port name, not a UUID\n");
fprintf (stderr, "\nDisplay options:\n");
fprintf (stderr, " -l Show all properties\n");
fprintf (stderr, " -l, --list UUID \tShow value for all properties of UUID\n");
fprintf (stderr, " -l, --list UUID key Show value for key of UUID\n");
fprintf (stderr, "\nFor more information see https://jackaudio.org/\n");
}
static int
get_subject (jack_client_t* client, char* argv[], int* optind)
{
if (subject_is_client) {
char* cstr = argv[(*optind)++];
char* ustr;
if ((ustr = jack_get_uuid_for_client_name (client, cstr)) == NULL) {
fprintf (stderr, "cannot get UUID for client named %s\n", cstr);
return -1;
}
if (jack_uuid_parse (ustr, &uuid)) {
fprintf (stderr, "cannot parse client UUID as UUID '%s' '%s'\n", cstr, ustr);
return -1;
}
subject = cstr;
} else if (subject_is_port) {
char* pstr = argv[(*optind)++];
jack_port_t* port;
if ((port = jack_port_by_name (client, pstr)) == NULL) {
fprintf (stderr, "cannot find port name %s\n", pstr);
return -1;
}
uuid = jack_port_uuid (port);
subject = pstr;
} else {
char* str = argv[(*optind)++];
if (jack_uuid_parse (str, &uuid)) {
fprintf (stderr, "cannot parse subject as UUID\n");
return -1;
}
subject = str;
}
return 0;
}
int main (int argc, char* argv[])
{
jack_client_t* client = NULL;
jack_options_t options = JackNoStartServer;
char* key = NULL;
char* value = NULL;
char* type = NULL;
int set = 1;
int delete = 0;
int delete_all = 0;
int c;
int option_index;
extern int optind;
struct option long_options[] = {
{ "set", 0, 0, 's' },
{ "delete", 0, 0, 'd' },
{ "delete-all", 0, 0, 'D' },
{ "list", 0, 0, 'l' },
{ "client", 0, 0, 'c' },
{ "port", 0, 0, 'p' },
{ 0, 0, 0, 0 }
};
if (argc < 2) {
show_usage ();
exit (1);
}
while ((c = getopt_long (argc, argv, "sdDlaApc", long_options, &option_index)) >= 0) {
switch (c) {
case 's':
if (argc < 5) {
show_usage ();
exit (1);
}
set = 1;
break;
case 'd':
if (argc < 3) {
show_usage ();
return 1;
}
set = 0;
delete = 1;
break;
case 'D':
delete = 0;
set = 0;
delete_all = 1;
break;
case 'l':
set = 0;
delete = 0;
delete_all = 0;
break;
case 'p':
subject_is_port = 1;
break;
case 'c':
subject_is_client = 1;
break;
case '?':
default:
show_usage ();
exit (1);
}
}
if ((client = jack_client_open ("jack-property", options, NULL)) == 0) {
fprintf (stderr, "Cannot connect to JACK server\n");
exit (1);
}
if (delete_all) {
if (jack_remove_all_properties (client) == 0) {
printf ("JACK metadata successfully delete\n");
exit (0);
}
exit (1);
}
if (delete) {
int args_left = argc - optind;
if (args_left < 1) {
show_usage ();
exit (1);
}
/* argc == 3: delete all properties for a subject
argc == 4: delete value of key for subject
*/
if (args_left >= 2) {
if (get_subject (client, argv, &optind)) {
return 1;
}
key = argv[optind++];
if (jack_remove_property (client, uuid, key)) {
fprintf (stderr, "\"%s\" property not removed for %s\n", key, subject);
exit (1);
}
} else {
if (get_subject (client, argv, &optind)) {
return 1;
}
if (jack_remove_properties (client, uuid) < 0) {
fprintf (stderr, "cannot remove properties for UUID %s\n", subject);
exit (1);
}
}
} else if (set) {
int args_left = argc - optind;
if (get_subject (client, argv, &optind)) {
return -1;
}
key = argv[optind++];
value = argv[optind++];
if (args_left >= 3) {
type = argv[optind++];
} else {
type = "";
}
if (jack_set_property (client, uuid, key, value, type)) {
fprintf (stderr, "cannot set value for key %s of %s\n", key, subject);
exit (1);
}
} else {
/* list properties */
int args_left = argc - optind;
if (args_left >= 2) {
/* list properties for a UUID/key pair */
if (get_subject (client, argv, &optind)) {
return -1;
}
key = argv[optind++];
if (jack_get_property (uuid, key, &value, &type) == 0) {
printf ("%s\n", value);
free (value);
if (type) {
free (type);
}
} else {
fprintf (stderr, "Value not found for %s of %s\n", key, subject);
exit (1);
}
} else if (args_left == 1) {
/* list all properties for a given UUID */
jack_description_t description;
int cnt, n;
if (get_subject (client, argv, &optind)) {
return -1;
}
if ((cnt = jack_get_properties (uuid, &description)) < 0) {
fprintf (stderr, "could not retrieve properties for %s\n", subject);
exit (1);
}
for (n = 0; n < cnt; ++n) {
if (description.properties[n].type) {
printf ("key: %s value: %s type: %s\n",
description.properties[n].key,
description.properties[n].data,
description.properties[n].type);
} else {
printf ("key: %s value: %s\n",
description.properties[n].key,
description.properties[n].data);
}
}
jack_free_description (&description, 0);
} else {
/* list all properties */
jack_description_t* description;
int cnt, n;
size_t p;
char buf[JACK_UUID_STRING_SIZE];
if ((cnt = jack_get_all_properties (&description)) < 0) {
fprintf (stderr, "could not retrieve all properties\n");
exit (1);
}
for (n = 0; n < cnt; ++n) {
jack_uuid_unparse (description[n].subject, buf);
printf ("%s\n", buf);
for (p = 0; p < description[n].property_cnt; ++p) {
if (description[n].properties[p].type) {
printf ("key: %s value: %s type: %s\n",
description[n].properties[p].key,
description[n].properties[p].data,
description[n].properties[p].type);
} else {
printf ("key: %s value: %s\n",
description[n].properties[p].key,
description[n].properties[p].data);
}
}
jack_free_description (&description[n], 0);
}
free (description);
}
}
(void) jack_client_close (client);
return 0;
}
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