/*
This file is part of GNUnet.
- (C) 2009, 2010, 2011 Christian Grothoff (and other contributing authors)
+ Copyright (C) 2009, 2010, 2011 Christian Grothoff (and other contributing authors)
GNUnet is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published
* given in the configuration (i.e. hole-punched DynDNS setup).
*/
LAL_EXTERNAL_IP,
+
+ /**
+ * Address was obtained by an external STUN server
+ */
+ LAL_EXTERNAL_STUN_IP,
/**
* Address was obtained by DNS resolution of the external hostname
/**
* ID of select gnunet-helper-nat-server stdout read task
*/
- GNUNET_SCHEDULER_TaskIdentifier server_read_task;
+ struct GNUNET_SCHEDULER_Task * server_read_task;
/**
* ID of interface IP-scan task
*/
- GNUNET_SCHEDULER_TaskIdentifier ifc_task;
+ struct GNUNET_SCHEDULER_Task * ifc_task;
/**
* ID of hostname DNS lookup task
*/
- GNUNET_SCHEDULER_TaskIdentifier hostname_task;
+ struct GNUNET_SCHEDULER_Task * hostname_task;
/**
* ID of DynDNS lookup task
*/
- GNUNET_SCHEDULER_TaskIdentifier dns_task;
-
- /**
- * ID of task to add addresses from bind.
- */
- GNUNET_SCHEDULER_TaskIdentifier bind_task;
+ struct GNUNET_SCHEDULER_Task *dns_task;
/**
* How often do we scan for changes in our IP address from our local
{
return GNUNET_OK;
}
- if (GNUNET_YES == h->use_localaddresses)
+ if ((GNUNET_YES == h->use_localaddresses) || (value != 0))
{
add_ip_to_address_list (h, LAL_INTERFACE_ADDRESS, &s4->sin_addr,
sizeof (struct in_addr));
return GNUNET_OK;
}
if ((h->internal_address == NULL) && (h->server_proc == NULL) &&
- (h->server_read_task == GNUNET_SCHEDULER_NO_TASK) &&
+ (h->server_read_task == NULL) &&
(GNUNET_YES == isDefault) && ((addr->sa_family == AF_INET) ||
(addr->sa_family == AF_INET6)))
{
{
struct GNUNET_NAT_Handle *h = cls;
- h->server_read_task = GNUNET_SCHEDULER_NO_TASK;
+ h->server_read_task = NULL;
if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
return;
start_gnunet_nat_server (h);
const char *port_start;
struct sockaddr_in sin_addr;
- h->server_read_task = GNUNET_SCHEDULER_NO_TASK;
+ h->server_read_task = NULL;
if ((tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN) != 0)
return;
memset (mybuf, 0, sizeof (mybuf));
{
struct GNUNET_NAT_Handle *h = cls;
- h->ifc_task = GNUNET_SCHEDULER_NO_TASK;
+ h->ifc_task = NULL;
remove_from_address_list_by_source (h, LAL_INTERFACE_ADDRESS);
GNUNET_OS_network_interfaces_list (&process_interfaces, h);
h->ifc_task =
{
struct GNUNET_NAT_Handle *h = cls;
- h->hostname_task = GNUNET_SCHEDULER_NO_TASK;
+ h->hostname_task = NULL;
remove_from_address_list_by_source (h, LAL_HOSTNAME_DNS);
h->hostname_dns =
GNUNET_RESOLVER_hostname_resolve (AF_UNSPEC, HOSTNAME_RESOLVE_TIMEOUT,
struct GNUNET_NAT_Handle *h = cls;
struct LocalAddressList *pos;
- h->dns_task = GNUNET_SCHEDULER_NO_TASK;
+ h->dns_task = NULL;
for (pos = h->lal_head; NULL != pos; pos = pos->next)
if (pos->source == LAL_EXTERNAL_IP)
pos->source = LAL_EXTERNAL_IP_OLD;
* the previous (now invalid) one
* @param addr either the previous or the new public IP address
* @param addrlen actual lenght of @a addr
- * @param emsg NULL on success, otherwise an error message
+ * @param ret GNUNET_NAT_ERROR_SUCCESS on success, otherwise an error code
*/
static void
upnp_add (void *cls,
int add_remove,
const struct sockaddr *addr,
socklen_t addrlen,
- const char *emsg)
+ enum GNUNET_NAT_StatusCode ret)
{
struct GNUNET_NAT_Handle *h = cls;
struct LocalAddressList *pos;
struct LocalAddressList *next;
+
+ if (GNUNET_NAT_ERROR_SUCCESS != ret)
+ {
+ /* Error while running upnp client */
+ LOG (GNUNET_ERROR_TYPE_ERROR,
+ _("Error while running upnp client:\n"));
+
+ //FIXME: convert error code to string
+
+ return;
+ }
+
if (GNUNET_YES == add_remove)
{
add_to_address_list (h, LAL_UPNP, addr, addrlen);
return;
}
- /* remove address */
- next = h->lal_head;
- while (NULL != (pos = next))
+ else if (GNUNET_NO == add_remove)
{
- next = pos->next;
- if ((pos->source != LAL_UPNP) || (pos->addrlen != addrlen) ||
- (0 != memcmp (&pos[1], addr, addrlen)))
- continue;
- GNUNET_CONTAINER_DLL_remove (h->lal_head, h->lal_tail, pos);
- if (NULL != h->address_callback)
- h->address_callback (h->callback_cls, GNUNET_NO,
- (const struct sockaddr *) &pos[1], pos->addrlen);
- GNUNET_free (pos);
- return; /* only remove once */
+ /* remove address */
+ next = h->lal_head;
+ while (NULL != (pos = next))
+ {
+ next = pos->next;
+ if ((pos->source != LAL_UPNP) || (pos->addrlen != addrlen) ||
+ (0 != memcmp (&pos[1], addr, addrlen)))
+ continue;
+ GNUNET_CONTAINER_DLL_remove (h->lal_head, h->lal_tail, pos);
+ if (NULL != h->address_callback)
+ h->address_callback (h->callback_cls, GNUNET_NO,
+ (const struct sockaddr *) &pos[1], pos->addrlen);
+ GNUNET_free (pos);
+ return; /* only remove once */
+ }
+ /* asked to remove address that does not exist */
+ LOG (GNUNET_ERROR_TYPE_ERROR,
+ "Asked to remove unkown address `%s'\n",
+ GNUNET_a2s(addr, addrlen));
+ GNUNET_break (0);
+ }
+ else
+ {
+
+ GNUNET_break (0);
}
- /* asked to remove address that does not exist */
- GNUNET_break (0);
}
return; /* already got this port */
ml = ml->next;
}
+
ml = GNUNET_new (struct MiniList);
ml->port = port;
ml->mini = GNUNET_NAT_mini_map_start (port, h->is_tcp, &upnp_add, h);
+
+ if (NULL == ml->mini)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ _("Failed to run upnp client for port %u\n"), ml->port);
+ GNUNET_free (ml);
+ return;
+ }
+
GNUNET_CONTAINER_DLL_insert (h->mini_head, h->mini_tail, ml);
}
/**
* Task to add addresses from original bind to set of valid addrs.
*
- * @param cls the NAT handle
- * @param tc scheduler context
+ * @param h the NAT handle
*/
static void
-add_from_bind (void *cls,
- const struct GNUNET_SCHEDULER_TaskContext *tc)
+add_from_bind (struct GNUNET_NAT_Handle *h)
{
static struct in6_addr any = IN6ADDR_ANY_INIT;
- struct GNUNET_NAT_Handle *h = cls;
+
unsigned int i;
struct sockaddr *sa;
const struct sockaddr_in *v4;
- h->bind_task = GNUNET_SCHEDULER_NO_TASK;
for (i = 0; i < h->num_local_addrs; i++)
{
sa = h->local_addrs[i];
}
v4 = (const struct sockaddr_in *) sa;
if (0 != v4->sin_addr.s_addr)
- add_to_address_list (h, LAL_BINDTO_ADDRESS, sa,
+ add_to_address_list (h,
+ LAL_BINDTO_ADDRESS, sa,
sizeof (struct sockaddr_in));
if (h->enable_upnp)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_INFO,
+ "Running upnp client for address `%s'\n",
+ GNUNET_a2s (sa,sizeof (struct sockaddr_in)));
add_minis (h, ntohs (v4->sin_port));
+ }
break;
case AF_INET6:
if (sizeof (struct sockaddr_in6) != h->local_addrlens[i])
break;
}
if (0 !=
- memcmp (&((const struct sockaddr_in6 *) sa)->sin6_addr, &any,
+ memcmp (&((const struct sockaddr_in6 *) sa)->sin6_addr,
+ &any,
sizeof (struct in6_addr)))
- add_to_address_list (h, LAL_BINDTO_ADDRESS, sa,
+ add_to_address_list (h,
+ LAL_BINDTO_ADDRESS,
+ sa,
sizeof (struct sockaddr_in6));
break;
default:
}
-
/**
* Attempt to enable port redirection and detect public IP address contacting
* UPnP or NAT-PMP routers on the local network. Use addr to specify to which
* @param is_tcp #GNUNET_YES for TCP, #GNUNET_NO for UDP
* @param adv_port advertised port (port we are either bound to or that our OS
* locally performs redirection from to our bound port).
- * @param num_addrs number of addresses in 'addrs'
+ * @param num_addrs number of addresses in @a addrs
* @param addrs the local addresses packets should be redirected to
* @param addrlens actual lengths of the addresses
* @param address_callback function to call everytime the public IP address changes
uint16_t adv_port,
unsigned int num_addrs,
const struct sockaddr **addrs,
- const socklen_t * addrlens,
+ const socklen_t *addrlens,
GNUNET_NAT_AddressCallback address_callback,
GNUNET_NAT_ReversalCallback reversal_callback,
void *callback_cls)
memcpy (h->local_addrs[i], addrs[i], addrlens[i]);
}
}
- h->bind_task = GNUNET_SCHEDULER_add_now (&add_from_bind, h);
if (GNUNET_OK ==
GNUNET_CONFIGURATION_have_value (cfg, "nat", "INTERNAL_ADDRESS"))
{
if (NULL == reversal_callback)
h->enable_nat_server = GNUNET_NO;
+ /* Check for UPnP client, disable immediately if not available */
+ if ( (GNUNET_YES == h->enable_upnp) &&
+ (GNUNET_SYSERR ==
+ GNUNET_OS_check_helper_binary ("upnpc", GNUNET_NO, NULL)) )
+ {
+ LOG (GNUNET_ERROR_TYPE_ERROR,
+ _("UPnP enabled in configuration, but UPnP client `upnpc` command not found, disabling UPnP \n"));
+ h->enable_upnp = GNUNET_NO;
+ }
+
/* Check if NAT was hole-punched */
if ((NULL != h->address_callback) &&
(NULL != h->external_address) &&
if (NULL != h->address_callback)
{
- h->ifc_task = GNUNET_SCHEDULER_add_now (&list_interfaces, h);
+ h->ifc_task = GNUNET_SCHEDULER_add_now (&list_interfaces,
+ h);
if (GNUNET_YES == h->use_hostname)
- h->hostname_task = GNUNET_SCHEDULER_add_now (&resolve_hostname, h);
+ h->hostname_task = GNUNET_SCHEDULER_add_now (&resolve_hostname,
+ h);
}
+ add_from_bind (h);
return h;
}
"NAT unregister called\n");
while (NULL != (ml = h->mini_head))
{
- GNUNET_CONTAINER_DLL_remove (h->mini_head, h->mini_tail, ml);
+ GNUNET_CONTAINER_DLL_remove (h->mini_head,
+ h->mini_tail,
+ ml);
if (NULL != ml->mini)
GNUNET_NAT_mini_map_stop (ml->mini);
GNUNET_free (ml);
GNUNET_RESOLVER_request_cancel (h->hostname_dns);
h->hostname_dns = NULL;
}
- if (GNUNET_SCHEDULER_NO_TASK != h->server_read_task)
+ if (NULL != h->server_read_task)
{
GNUNET_SCHEDULER_cancel (h->server_read_task);
- h->server_read_task = GNUNET_SCHEDULER_NO_TASK;
+ h->server_read_task = NULL;
}
- if (GNUNET_SCHEDULER_NO_TASK != h->bind_task)
- {
- GNUNET_SCHEDULER_cancel (h->bind_task);
- h->bind_task = GNUNET_SCHEDULER_NO_TASK;
- }
- if (GNUNET_SCHEDULER_NO_TASK != h->ifc_task)
+ if (NULL != h->ifc_task)
{
GNUNET_SCHEDULER_cancel (h->ifc_task);
- h->ifc_task = GNUNET_SCHEDULER_NO_TASK;
+ h->ifc_task = NULL;
}
- if (GNUNET_SCHEDULER_NO_TASK != h->hostname_task)
+ if (NULL != h->hostname_task)
{
GNUNET_SCHEDULER_cancel (h->hostname_task);
- h->hostname_task = GNUNET_SCHEDULER_NO_TASK;
+ h->hostname_task = NULL;
}
- if (GNUNET_SCHEDULER_NO_TASK != h->dns_task)
+ if (NULL != h->dns_task)
{
GNUNET_SCHEDULER_cancel (h->dns_task);
- h->dns_task = GNUNET_SCHEDULER_NO_TASK;
+ h->dns_task = NULL;
}
if (NULL != h->server_proc)
{
return GNUNET_NO;
}
+/**
+ * Converts enum GNUNET_NAT_StatusCode to a string
+ *
+ * @param err error code to resolve to a string
+ * @return pointer to a static string containing the error code
+ */
+const char *
+GNUNET_NAT_status2string (enum GNUNET_NAT_StatusCode err)
+{
+ switch (err)
+ {
+ case GNUNET_NAT_ERROR_SUCCESS:
+ return _ ("Operation Successful");
+ case GNUNET_NAT_ERROR_IPC_FAILURE:
+ return _ ("Internal Failure (IPC, ...)");
+ case GNUNET_NAT_ERROR_INTERNAL_NETWORK_ERROR:
+ return _ ("Failure in network subsystem, check permissions.");
+ case GNUNET_NAT_ERROR_TIMEOUT:
+ return _ ("Encountered timeout while performing operation");
+ case GNUNET_NAT_ERROR_NOT_ONLINE:
+ return _ ("detected that we are offline");
+ case GNUNET_NAT_ERROR_UPNPC_NOT_FOUND:
+ return _ ("`upnpc` command not found");
+ case GNUNET_NAT_ERROR_UPNPC_FAILED:
+ return _ ("Failed to run `upnpc` command");
+ case GNUNET_NAT_ERROR_UPNPC_TIMEOUT:
+ return _ ("`upnpc' command took too long, process killed");
+ case GNUNET_NAT_ERROR_UPNPC_PORTMAP_FAILED:
+ return _ ("`upnpc' command failed to establish port mapping");
+ case GNUNET_NAT_ERROR_EXTERNAL_IP_UTILITY_NOT_FOUND:
+ return _ ("`external-ip' command not found");
+ case GNUNET_NAT_ERROR_EXTERNAL_IP_UTILITY_FAILED:
+ return _ ("Failed to run `external-ip` command");
+ case GNUNET_NAT_ERROR_EXTERNAL_IP_UTILITY_OUTPUT_INVALID:
+ return _ ("`external-ip' command output invalid");
+ case GNUNET_NAT_ERROR_EXTERNAL_IP_ADDRESS_INVALID:
+ return _ ("no valid address was returned by `external-ip'");
+ case GNUNET_NAT_ERROR_NO_VALID_IF_IP_COMBO:
+ return _ ("Could not determine interface with internal/local network address");
+ case GNUNET_NAT_ERROR_HELPER_NAT_SERVER_NOT_FOUND:
+ return _ ("No functioning gnunet-helper-nat-server installation found");
+ case GNUNET_NAT_ERROR_NAT_TEST_START_FAILED:
+ return _ ("NAT test could not be initialized");
+ case GNUNET_NAT_ERROR_NAT_TEST_TIMEOUT:
+ return _ ("NAT test timeout reached");
+ case GNUNET_NAT_ERROR_NAT_REGISTER_FAILED:
+ return _ ("could not register NAT");
+ case GNUNET_NAT_ERROR_HELPER_NAT_CLIENT_NOT_FOUND:
+ return _ ("No working gnunet-helper-nat-client installation found");
+/* case:
+ return _ ("");*/
+ default:
+ return "unknown status code";
+ }
+}
/* end of nat.c */
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