/* Sort the playlist by file names. */
void plist_sort_fname (struct plist *plist)
{
struct plist_item *sorted;
struct rb_node *x;
int n;
if (plist_count(plist) == 0)
return;
sorted = (struct plist_item *)xmalloc (plist_count(plist) *
sizeof(struct plist_item));
x = rb_min (plist->search_tree);
assert (!rb_is_null(x));
while (plist_deleted(plist, (intptr_t)rb_get_data (x)))
x = rb_next (x);
sorted[0] = plist->items[(intptr_t)rb_get_data (x)];
rb_set_data (x, NULL);
n = 1;
while (!rb_is_null(x = rb_next(x))) {
if (!plist_deleted(plist, (intptr_t)rb_get_data (x))) {
sorted[n] = plist->items[(intptr_t)rb_get_data (x)];
rb_set_data (x, (void *)(intptr_t)n++);
}
}
plist->num = n;
plist->not_deleted = n;
memcpy (plist->items, sorted, sizeof(struct plist_item) * n);
free (sorted);
}
/* PUBLIC */
int number_of_vars_in_term(Term t)
{
Plist p = set_of_vars(t, NULL);
int n = plist_count(p);
zap_plist(p);
return n;
} /* number_of_vars_in_term */
/* Move to the next file depending on the options set, the user
* request and whether or not there are files in the queue. */
static void go_to_another_file ()
{
int shuffle = options_get_int ("Shuffle");
int go_next = (play_next || options_get_int("AutoNext"));
int curr_playing_curr_pos;
/* XXX: Shouldn't play_next be protected by mutex? */
LOCK (curr_playing_mut);
LOCK (plist_mut);
/* If we move forward in the playlist and there are some songs in
* the queue, then play them. */
if (plist_count(&queue) && go_next) {
logit ("Playing file from queue");
if (!before_queue_fname && curr_playing_fname)
before_queue_fname = xstrdup (curr_playing_fname);
curr_plist = &queue;
curr_playing = plist_next (&queue, -1);
server_queue_pop (queue.items[curr_playing].file);
plist_delete (&queue, curr_playing);
}
else {
/* If we just finished playing files from the queue and the
* appropriate option is set, continue with the file played
* before playing the queue. */
if (before_queue_fname && options_get_int("QueueNextSongReturn")) {
free (curr_playing_fname);
curr_playing_fname = before_queue_fname;
before_queue_fname = NULL;
}
if (shuffle) {
curr_plist = &shuffled_plist;
if (plist_count(&playlist)
&& !plist_count(&shuffled_plist)) {
plist_cat (&shuffled_plist, &playlist);
plist_shuffle (&shuffled_plist);
if (curr_playing_fname)
plist_swap_first_fname (&shuffled_plist,
curr_playing_fname);
}
}
else
curr_plist = &playlist;
curr_playing_curr_pos = plist_find_fname (curr_plist,
curr_playing_fname);
/* If we came from the queue and the last file in
* queue wasn't in the playlist, we try to revert to
* the QueueNextSongReturn = 1 behaviour. */
if (curr_playing_curr_pos == -1 && before_queue_fname) {
curr_playing_curr_pos = plist_find_fname (curr_plist,
before_queue_fname);
}
if (play_prev && plist_count(curr_plist)) {
logit ("Playing previous...");
if (curr_playing_curr_pos == -1
|| started_playing_in_queue) {
curr_playing = plist_prev (curr_plist, -1);
started_playing_in_queue = 0;
}
else
curr_playing = plist_prev (curr_plist,
curr_playing_curr_pos);
if (curr_playing == -1) {
if (options_get_int("Repeat"))
curr_playing = plist_last (curr_plist);
logit ("Beginning of the list.");
}
else
logit ("Previous item.");
}
else if (go_next && plist_count(curr_plist)) {
logit ("Playing next...");
if (curr_playing_curr_pos == -1
|| started_playing_in_queue) {
curr_playing = plist_next (curr_plist, -1);
started_playing_in_queue = 0;
}
else
curr_playing = plist_next (curr_plist,
curr_playing_curr_pos);
if (curr_playing == -1 && options_get_int("Repeat")) {
if (shuffle) {
plist_clear (&shuffled_plist);
plist_cat (&shuffled_plist, &playlist);
plist_shuffle (&shuffled_plist);
}
curr_playing = plist_next (curr_plist, -1);
logit ("Going back to the first item.");
}
else if (curr_playing == -1)
logit ("End of the list");
else
logit ("Next item");
}
else if (!options_get_int("Repeat")) {
curr_playing = -1;
}
else
debug ("Repeating file");
if (before_queue_fname)
free (before_queue_fname);
before_queue_fname = NULL;
}
UNLOCK (plist_mut);
UNLOCK (curr_playing_mut);
}
int main(int argc, char *argv[])
{
lnode *conf;
struct sigaction sa;
int i;
#ifndef DEBUG
/* Make sure we are root */
if (getuid() != 0) {
fprintf(stderr, "You must be root to run this program.\n");
return 4;
}
#endif
set_aumessage_mode(MSG_SYSLOG, DBG_YES);
/* Register sighandlers */
sa.sa_flags = 0;
sigemptyset(&sa.sa_mask);
/* Ignore all signals by default */
sa.sa_handler = SIG_IGN;
for (i=1; i<NSIG; i++)
sigaction(i, &sa, NULL);
/* Set handler for the ones we care about */
sa.sa_handler = term_handler;
sigaction(SIGTERM, &sa, NULL);
sa.sa_handler = hup_handler;
sigaction(SIGHUP, &sa, NULL);
sa.sa_handler = alarm_handler;
sigaction(SIGALRM, &sa, NULL);
sa.sa_handler = child_handler;
sigaction(SIGCHLD, &sa, NULL);
/* move stdin to its own fd */
if (argc == 3 && strcmp(argv[1], "--input") == 0)
audit_fd = open(argv[2], O_RDONLY);
else
audit_fd = dup(0);
if (audit_fd < 0) {
syslog(LOG_ERR, "Failed setting up input, exiting");
return 1;
}
/* Make all descriptors point to dev null */
i = open("/dev/null", O_RDWR);
if (i >= 0) {
if (dup2(0, i) < 0 || dup2(1, i) < 0 || dup2(2, i) < 0) {
syslog(LOG_ERR, "Failed duping /dev/null %s, exiting",
strerror(errno));
return 1;
}
close(i);
} else {
syslog(LOG_ERR, "Failed opening /dev/null %s, exiting",
strerror(errno));
return 1;
}
if (fcntl(audit_fd, F_SETFD, FD_CLOEXEC) < 0) {
syslog(LOG_ERR, "Failed protecting input %s, exiting",
strerror(errno));
return 1;
}
/* init the daemon's config */
if (load_config(&daemon_config, config_file))
return 6;
load_plugin_conf(&plugin_conf);
/* if no plugins - exit */
if (plist_count(&plugin_conf) == 0) {
syslog(LOG_ERR, "No plugins found, exiting");
return 0;
}
/* Plugins are started with the auditd priority */
i = start_plugins(&plugin_conf);
/* Now boost priority to make sure we are getting time slices */
if (daemon_config.priority_boost != 0) {
errno = 0;
(void) nice((int)-daemon_config.priority_boost);
if (errno) {
syslog(LOG_ERR, "Cannot change priority (%s)",
strerror(errno));
/* Stay alive as this is better than stopping */
}
}
/* Let the queue initialize */
init_queue(daemon_config.q_depth);
syslog(LOG_NOTICE,
"audispd initialized with q_depth=%d and %d active plugins",
daemon_config.q_depth, i);
/* Tell it to poll the audit fd */
if (add_event(audit_fd, process_inbound_event) < 0) {
syslog(LOG_ERR, "Cannot add event, exiting");
return 1;
}
/* Create inbound thread */
pthread_create(&inbound_thread, NULL, inbound_thread_main, NULL);
/* Start event loop */
while (event_loop()) {
hup = 0;
reconfigure();
}
/* Tell plugins we are going down */
signal_plugins(SIGTERM);
/* Cleanup builtin plugins */
destroy_af_unix();
destroy_syslog();
/* Give it 5 seconds to clear the queue */
alarm(5);
pthread_join(inbound_thread, NULL);
/* Release configs */
plist_first(&plugin_conf);
conf = plist_get_cur(&plugin_conf);
while (conf) {
free_pconfig(conf->p);
conf = plist_next(&plugin_conf);
}
plist_clear(&plugin_conf);
/* Cleanup the queue */
destroy_queue();
free_config(&daemon_config);
return 0;
}
