static int get_creds(sd_bus *bus, sd_bus_message *m, uint64_t mask, sd_bus_creds **_creds, sd_bus_error *error) {
_cleanup_bus_creds_unref_ sd_bus_creds *c = NULL;
const char *name;
int r;
assert(bus);
assert(m);
assert(_creds);
r = sd_bus_message_read(m, "s", &name);
if (r < 0)
return r;
assert_return(service_name_is_valid(name), -EINVAL);
r = sd_bus_get_owner(bus, name, mask, &c);
if (r == -ENOENT || r == -ENXIO)
return sd_bus_error_setf(error, SD_BUS_ERROR_NAME_HAS_NO_OWNER, "Name %s is currently not owned by anyone.", name);
if (r < 0)
return r;
if ((c->mask & mask) != mask)
return -ENOTSUP;
*_creds = c;
c = NULL;
return 0;
}
_public_ int sd_bus_query_sender_creds(sd_bus_message *call, uint64_t mask, sd_bus_creds **creds) {
sd_bus_creds *c;
assert_return(call, -EINVAL);
assert_return(call->sealed, -EPERM);
assert_return(call->bus, -EINVAL);
assert_return(!bus_pid_changed(call->bus), -ECHILD);
if (!BUS_IS_OPEN(call->bus->state))
return -ENOTCONN;
c = sd_bus_message_get_creds(call);
/* All data we need? */
if (c && (mask & ~c->mask) == 0) {
*creds = sd_bus_creds_ref(c);
return 0;
}
/* No data passed? Or not enough data passed to retrieve the missing bits? */
if (!c || !(c->mask & SD_BUS_CREDS_PID)) {
/* We couldn't read anything from the call, let's try
* to get it from the sender or peer */
if (call->sender)
return sd_bus_get_owner(call->bus, call->sender, mask, creds);
else
return sd_bus_get_peer_creds(call->bus, mask, creds);
}
return bus_creds_extend_by_pid(c, mask, creds);
}
