/**
* Callback for event from slave controllers
*
* @param cls NULL
* @param event information about the event
*/
static void
slave_event_cb (void *cls, const struct GNUNET_TESTBED_EventInformation *event)
{
struct LCFContext *lcf;
/* We currently only get here when working on LCFContexts */
GNUNET_assert (GNUNET_TESTBED_ET_OPERATION_FINISHED == event->type);
lcf = event->op_cls;
GNUNET_assert (lcf->op == event->op);
GNUNET_TESTBED_operation_done (lcf->op);
lcf->op = NULL;
GNUNET_assert (FINISHED == lcf->state);
GNUNET_assert (NULL != lcf->timeout_task);
GNUNET_SCHEDULER_cancel (lcf->timeout_task);
if (NULL == event->details.operation_finished.emsg)
send_controller_link_response (lcf->client, lcf->operation_id,
GNUNET_TESTBED_host_get_cfg_
(GST_host_list[lcf->delegated_host_id]),
NULL);
else
send_controller_link_response (lcf->client, lcf->operation_id,
NULL,
event->details.operation_finished.emsg);
GNUNET_assert (NULL == lcf_proc_task_id);
lcf_proc_task_id = GNUNET_SCHEDULER_add_now (&lcf_proc_task, lcf);
return;
}
/**
* Handler for GNUNET_MESSAGE_TYPE_TESTBED_GETSLAVECONFIG messages
*
* @param cls NULL
* @param client identification of the client
* @param message the actual message
*/
static void
handle_slave_get_config (void *cls, struct GNUNET_SERVER_Client *client,
const struct GNUNET_MessageHeader *message)
{
struct GNUNET_TESTBED_SlaveGetConfigurationMessage *msg;
struct Slave *slave;
struct GNUNET_TESTBED_SlaveConfiguration *reply;
const struct GNUNET_CONFIGURATION_Handle *cfg;
char *config;
char *xconfig;
size_t config_size;
size_t xconfig_size;
size_t reply_size;
uint64_t op_id;
uint32_t slave_id;
msg = (struct GNUNET_TESTBED_SlaveGetConfigurationMessage *) message;
slave_id = ntohl (msg->slave_id);
op_id = GNUNET_ntohll (msg->operation_id);
if ((GST_slave_list_size <= slave_id) || (NULL == GST_slave_list[slave_id]))
{
/* FIXME: Add forwardings for this type of message here.. */
GST_send_operation_fail_msg (client, op_id, "Slave not found");
GNUNET_SERVER_receive_done (client, GNUNET_OK);
return;
}
slave = GST_slave_list[slave_id];
GNUNET_assert (NULL != (cfg = GNUNET_TESTBED_host_get_cfg_ (GST_host_list[slave->host_id])));
config = GNUNET_CONFIGURATION_serialize (cfg, &config_size);
xconfig_size =
GNUNET_TESTBED_compress_config_ (config, config_size, &xconfig);
GNUNET_free (config);
reply_size = xconfig_size + sizeof (struct GNUNET_TESTBED_SlaveConfiguration);
GNUNET_break (reply_size <= UINT16_MAX);
GNUNET_break (config_size <= UINT16_MAX);
reply = GNUNET_realloc (xconfig, reply_size);
(void) memmove (&reply[1], reply, xconfig_size);
reply->header.type = htons (GNUNET_MESSAGE_TYPE_TESTBED_SLAVE_CONFIGURATION);
reply->header.size = htons ((uint16_t) reply_size);
reply->slave_id = msg->slave_id;
reply->operation_id = msg->operation_id;
reply->config_size = htons ((uint16_t) config_size);
GST_queue_message (client, &reply->header);
GNUNET_SERVER_receive_done (client, GNUNET_OK);
}
/**
* Starts a controller process at the given host. The given host's configration
* is used as a Template configuration to use for the remote controller; the
* remote controller will be started with a slightly modified configuration
* (port numbers, unix domain sockets and service home values are changed as per
* TESTING library on the remote host). The modified configuration replaces the
* host's existing configuration before signalling success through the
* GNUNET_TESTBED_ControllerStatusCallback()
*
* @param trusted_ip the ip address of the controller which will be set as TRUSTED
* HOST(all connections form this ip are permitted by the testbed) when
* starting testbed controller at host. This can either be a single ip
* address or a network address in CIDR notation.
* @param host the host where the controller has to be started. CANNOT be NULL.
* @param cb function called when the controller is successfully started or
* dies unexpectedly; GNUNET_TESTBED_controller_stop shouldn't be
* called if cb is called with GNUNET_SYSERR as status. Will never be
* called in the same task as 'GNUNET_TESTBED_controller_start'
* (synchronous errors will be signalled by returning NULL). This
* parameter cannot be NULL.
* @param cls closure for above callbacks
* @return the controller process handle, NULL on errors
*/
struct GNUNET_TESTBED_ControllerProc *
GNUNET_TESTBED_controller_start (const char *trusted_ip,
struct GNUNET_TESTBED_Host *host,
GNUNET_TESTBED_ControllerStatusCallback cb,
void *cls)
{
struct GNUNET_TESTBED_ControllerProc *cp;
struct GNUNET_TESTBED_HelperInit *msg;
const struct GNUNET_CONFIGURATION_Handle *cfg;
const char *hostname;
static char *const binary_argv[] = {
HELPER_TESTBED_BINARY, NULL
};
GNUNET_assert (NULL != host);
GNUNET_assert (NULL != (cfg = GNUNET_TESTBED_host_get_cfg_ (host)));
hostname = NULL;
API_VIOLATION (GNUNET_NO == host->locked,
"Host is already locked by a previous call to GNUNET_TESTBED_controller_start()");
host->locked = GNUNET_YES;
API_VIOLATION (GNUNET_NO == host->controller_started,
"Attempting to start a controller on a host which is already started a controller");
cp = GNUNET_new (struct GNUNET_TESTBED_ControllerProc);
if (0 == GNUNET_TESTBED_host_get_id_ (host))
{
cp->helper =
GNUNET_HELPER_start (GNUNET_YES, HELPER_TESTBED_BINARY, binary_argv,
&helper_mst, &helper_exp_cb, cp);
}
else
{
char *helper_binary_path_args[2];
char **rsh_args;
char **rsh_suffix_args;
const char *username;
char *port;
char *argstr;
char *aux;
unsigned int cnt;
username = host->username;
hostname = host->hostname;
GNUNET_asprintf (&port, "%u", host->port);
LOG_DEBUG ("Starting remote connection to destination %s\n", hostname);
if (GNUNET_OK !=
GNUNET_CONFIGURATION_get_value_filename (cfg, "testbed",
"HELPER_BINARY_PATH",
&helper_binary_path_args[0]))
helper_binary_path_args[0] =
GNUNET_OS_get_libexec_binary_path (HELPER_TESTBED_BINARY);
helper_binary_path_args[1] = NULL;
rsh_args = gen_rsh_args (port, hostname, username);
rsh_suffix_args = gen_rsh_suffix_args ((const char **) helper_binary_path_args);
cp->helper_argv =
join_argv ((const char **) rsh_args, (const char **) rsh_suffix_args);
free_argv (rsh_args);
free_argv (rsh_suffix_args);
GNUNET_free (port);
argstr = GNUNET_strdup ("");
for (cnt = 0; NULL != cp->helper_argv[cnt]; cnt++)
{
aux = argstr;
GNUNET_assert (0 < GNUNET_asprintf (&argstr, "%s %s", aux, cp->helper_argv[cnt]));
GNUNET_free (aux);
}
LOG_DEBUG ("Helper cmd str: %s\n", argstr);
GNUNET_free (argstr);
cp->helper =
GNUNET_HELPER_start (GNUNET_NO, cp->helper_argv[0], cp->helper_argv, &helper_mst,
&helper_exp_cb, cp);
GNUNET_free (helper_binary_path_args[0]);
}
if (NULL == cp->helper)
{
if (NULL != cp->helper_argv)
free_argv (cp->helper_argv);
GNUNET_free (cp);
return NULL;
}
cp->host = host;
cp->cb = cb;
cp->cls = cls;
msg = GNUNET_TESTBED_create_helper_init_msg_ (trusted_ip, hostname, cfg);
cp->msg = &msg->header;
cp->shandle =
GNUNET_HELPER_send (cp->helper, &msg->header, GNUNET_NO, &clear_msg, cp);
if (NULL == cp->shandle)
{
GNUNET_free (msg);
GNUNET_TESTBED_controller_stop (cp);
return NULL;
}
return cp;
}
