static char *client_ext_dump(struct pa_client *client, char *buf, int len)
{
const char *name;
const char *id;
pid_t pid;
uid_t uid;
const char *exe;
const char *args, *arg0;
if (client == NULL)
*buf = '\0';
else {
name = pa_client_ext_name(client);
id = pa_client_ext_id(client);
pid = pa_client_ext_pid(client);
uid = pa_client_ext_uid(client);
exe = pa_client_ext_exe(client);
args = pa_client_ext_args(client);
arg0 = pa_client_ext_arg0(client);
if (!name) name = "<noname>";
if ( !id ) id = "<noid>";
if (!exe ) exe = "<noexe>";
if (!args) args = "<noargs>";
if (!arg0) arg0 = "<noarg>";
snprintf(buf, len,
"(%s|%s|%d|%d|%s|%s|%s)", name,id, pid, uid, exe,arg0,args);
}
return buf;
}
static const char *find_group_for_client(struct userdata *u,
struct pa_client *client,
pa_proplist *proplist,
uint32_t *flags_ret)
{
struct pa_classify *classify;
struct pa_classify_pid_hash **hash;
struct pa_classify_stream_def **defs;
pid_t pid = 0; /* client processs PID */
const char *clnam = ""; /* client's name in PA */
uid_t uid = (uid_t) -1; /* client process user ID */
const char *exe = ""; /* client's binary path */
const char *group = NULL;
uint32_t flags = 0;
assert(u);
pa_assert_se((classify = u->classify));
hash = classify->streams.pid_hash;
defs = &classify->streams.defs;
if (client == NULL)
group = streams_get_group(defs, proplist, clnam, uid, exe, &flags);
else {
pid = pa_client_ext_pid(client);
if ((group = pid_hash_get_group(hash, pid, proplist)) == NULL) {
clnam = pa_client_ext_name(client);
uid = pa_client_ext_uid(client);
exe = pa_client_ext_exe(client);
group = streams_get_group(defs, proplist, clnam, uid, exe, &flags);
}
}
if (group == NULL)
group = PA_POLICY_DEFAULT_GROUP_NAME;
pa_log_debug("%s (%s|%d|%d|%s) => %s,0x%x", __FUNCTION__,
clnam?clnam:"<null>", pid, uid, exe?exe:"<null>",
group?group:"<null>", flags);
if (flags_ret != NULL)
*flags_ret = flags;
return group;
}
static void client_ext_set_arg0(struct pa_client *client)
{
char path[256], arg0[1024];
int fd, len;
pid_t pid;
if (!(pid = pa_client_ext_pid(client))) {
/*
application.process.id property is set not for all kinds
of pulseaudio clients, and not right after a client creation
*/
pa_log_debug("no pid property for client %u, skip it", client->index);
return;
}
snprintf(path, sizeof(path), "/proc/%d/cmdline", pid);
if ((fd = open(path, O_RDONLY)) < 0) {
pa_log("can't obtain command line");
return;
}
for (;;) {
if ((len = read(fd, arg0, sizeof(arg0)-1)) < 0) {
if (errno == EINTR)
continue;
else {
arg0[0] = '\0';
break;
}
}
arg0[len] = '\0';
break;
}
close(fd);
pa_proplist_sets(client->proplist, PA_PROP_APPLICATION_PROCESS_ARG0, arg0);
}
