- /**
- * The gateway which will pass the link message to delegated host
- */
- struct Slave *gateway;
-
- /**
- * The controller link message that has to be forwarded to
- */
- struct GNUNET_TESTBED_ControllerLinkMessage *msg;
-
- /**
- * The client which has asked to perform this operation
- */
- struct GNUNET_SERVER_Client *client;
-
- /**
- * Handle for operations which are forwarded while linking controllers
- */
- struct ForwardedOperationContext *fopc;
-
- /**
- * The id of the operation which created this context
- */
- uint64_t operation_id;
-
- /**
- * The state of this context
- */
- enum LCFContextState state;
-
- /**
- * The delegated host
- */
- uint32_t delegated_host_id;
-
- /**
- * The slave host
- */
- uint32_t slave_host_id;
-
-};
-
-
-/**
- * Structure of a queue entry in LCFContext request queue
- */
-struct LCFContextQueue
-{
- /**
- * The LCFContext
- */
- struct LCFContext *lcf;
-
- /**
- * Head prt for DLL
- */
- struct LCFContextQueue *next;
-
- /**
- * Tail ptr for DLL
- */
- struct LCFContextQueue *prev;
-};
-
-
-/**
- * A peer
- */
-struct Peer
-{
-
- union
- {
- struct
- {
- /**
- * The peer handle from testing API
- */
- struct GNUNET_TESTING_Peer *peer;
-
- /**
- * The modified (by GNUNET_TESTING_peer_configure) configuration this
- * peer is configured with
- */
- struct GNUNET_CONFIGURATION_Handle *cfg;
-
- /**
- * Is the peer running
- */
- int is_running;
-
- } local;
-
- struct
- {
- /**
- * The slave this peer is started through
- */
- struct Slave *slave;
-
- /**
- * The id of the remote host this peer is running on
- */
- uint32_t remote_host_id;
-
- } remote;
-
- } details;
-
- /**
- * Is this peer locally created?
- */
- int is_remote;
-
- /**
- * Our local reference id for this peer
- */
- uint32_t id;
-
- /**
- * References to peers are using in forwarded overlay contexts and remote
- * overlay connect contexts. A peer can only be destroyed after all such
- * contexts are destroyed. For this, we maintain a reference counter. When we
- * use a peer in any such context, we increment this counter. We decrement it
- * when we are destroying these contexts
- */
- uint32_t reference_cnt;
-
- /**
- * While destroying a peer, due to the fact that there could be references to
- * this peer, we delay the peer destroy to a further time. We do this by using
- * this flag to destroy the peer while destroying a context in which this peer
- * has been used. When the flag is set to 1 and reference_cnt = 0 we destroy
- * the peer
- */
- uint32_t destroy_flag;
-
-};
-
-
-/**
- * Context information for connecting 2 peers in overlay
- */
-struct OverlayConnectContext
-{
- /**
- * The next pointer for maintaining a DLL
- */
- struct OverlayConnectContext *next;
-
- /**
- * The prev pointer for maintaining a DLL
- */
- struct OverlayConnectContext *prev;
-
- /**
- * The client which has requested for overlay connection
- */
- struct GNUNET_SERVER_Client *client;
-
- /**
- * the peer which has to connect to the other peer
- */
- struct Peer *peer;
-
- /**
- * Transport handle of the first peer to get its HELLO
- */
- struct GNUNET_TRANSPORT_Handle *p1th;
-
- /**
- * Transport handle of other peer to offer first peer's HELLO
- */
- struct GNUNET_TRANSPORT_Handle *p2th;
-
- /**
- * Core handles of the first peer; used to notify when second peer connects to it
- */
- struct GNUNET_CORE_Handle *ch;
-
- /**
- * HELLO of the other peer
- */
- struct GNUNET_MessageHeader *hello;
-
- /**
- * Get hello handle to acquire HELLO of first peer
- */
- struct GNUNET_TRANSPORT_GetHelloHandle *ghh;
-
- /**
- * The error message we send if this overlay connect operation has timed out
- */
- char *emsg;
-
- /**
- * Operation context for suboperations
- */
- struct OperationContext *opc;
-
- /**
- * Controller of peer 2; NULL if the peer is local
- */
- struct GNUNET_TESTBED_Controller *peer2_controller;
-
- /**
- * The peer identity of the first peer
- */
- struct GNUNET_PeerIdentity peer_identity;
-
- /**
- * The peer identity of the other peer
- */
- struct GNUNET_PeerIdentity other_peer_identity;
-
- /**
- * The id of the operation responsible for creating this context
- */
- uint64_t op_id;
-
- /**
- * The id of the task for sending HELLO of peer 2 to peer 1 and ask peer 1 to
- * connect to peer 2
- */
- GNUNET_SCHEDULER_TaskIdentifier send_hello_task;
-
- /**
- * The id of the overlay connect timeout task
- */
- GNUNET_SCHEDULER_TaskIdentifier timeout_task;
-
- /**
- * The id of the cleanup task
- */
- GNUNET_SCHEDULER_TaskIdentifier cleanup_task;
-
- /**
- * The id of peer A
- */
- uint32_t peer_id;
-
- /**
- * The id of peer B
- */
- uint32_t other_peer_id;
-
-};
-
-
-/**
- * Context information for RequestOverlayConnect
- * operations. RequestOverlayConnect is used when peers A, B reside on different
- * hosts and the host controller for peer B is asked by the host controller of
- * peer A to make peer B connect to peer A
- */
-struct RequestOverlayConnectContext
-{
- /**
- * the next pointer for DLL
- */
- struct RequestOverlayConnectContext *next;
-
- /**
- * the prev pointer for DLL
- */
- struct RequestOverlayConnectContext *prev;
-
- /**
- * The transport handle of peer B
- */
- struct GNUNET_TRANSPORT_Handle *th;
-
- /**
- * Peer A's HELLO
- */
- struct GNUNET_MessageHeader *hello;
-
- /**
- * The peer identity of peer A
- */
- struct GNUNET_PeerIdentity a_id;
-
- /**
- * Task for offering HELLO of A to B and doing try_connect
- */
- GNUNET_SCHEDULER_TaskIdentifier attempt_connect_task_id;
-
- /**
- * Task to timeout RequestOverlayConnect
- */
- GNUNET_SCHEDULER_TaskIdentifier timeout_rocc_task_id;
-
-};
-
-
-/**
- * Context information for operations forwarded to subcontrollers
- */
-struct ForwardedOperationContext
-{
- /**
- * The next pointer for DLL
- */
- struct ForwardedOperationContext *next;
-
- /**
- * The prev pointer for DLL
- */
- struct ForwardedOperationContext *prev;
-
- /**
- * The generated operation context
- */
- struct OperationContext *opc;
-
- /**
- * The client to which we have to reply
- */
- struct GNUNET_SERVER_Client *client;
-
- /**
- * Closure pointer
- */
- void *cls;
-
- /**
- * Task ID for the timeout task
- */
- GNUNET_SCHEDULER_TaskIdentifier timeout_task;
-
- /**
- * The id of the operation that has been forwarded
- */
- uint64_t operation_id;
-
- /**
- * The type of the operation which is forwarded
- */
- enum OperationType type;
-
-};
-
-
-/**
- * Context information used while linking controllers
- */
-struct LinkControllersContext
-{
- /**
- * The client which initiated the link controller operation
- */
- struct GNUNET_SERVER_Client *client;
-
- /**
- * The ID of the operation
- */
- uint64_t operation_id;
-
-};
-
-
-/**
- * Context information to used during operations which forward the overlay
- * connect message
- */
-struct ForwardedOverlayConnectContext
-{
- /**
- * next ForwardedOverlayConnectContext in the DLL
- */
- struct ForwardedOverlayConnectContext *next;
-
- /**
- * previous ForwardedOverlayConnectContext in the DLL
- */
- struct ForwardedOverlayConnectContext *prev;
-
- /**
- * A copy of the original overlay connect message
- */
- struct GNUNET_MessageHeader *orig_msg;
-
- /**
- * The id of the operation which created this context information
- */
- uint64_t operation_id;
-
- /**
- * the id of peer 1
- */
- uint32_t peer1;
-
- /**
- * The id of peer 2
- */
- uint32_t peer2;
-
- /**
- * Id of the host where peer2 is running
- */
- uint32_t peer2_host_id;
-};
-
-
-
-/**
- * The master context; generated with the first INIT message
- */
-static struct Context *master_context;
-
-/**
- * Our hostname; we give this to all the peers we start
- */
-static char *hostname;
-
-
-/***********/
-/* Handles */
-/***********/
-
-/**
- * Our configuration
- */
-static struct GNUNET_CONFIGURATION_Handle *our_config;
-
-/**
- * Current Transmit Handle; NULL if no notify transmit exists currently
- */
-static struct GNUNET_SERVER_TransmitHandle *transmit_handle;
-
-/****************/
-/* Lists & Maps */
-/****************/
-
-/**
- * The head for the LCF queue
- */
-static struct LCFContextQueue *lcfq_head;
-
-/**
- * The tail for the LCF queue
- */
-static struct LCFContextQueue *lcfq_tail;
-
-/**
- * The message queue head
- */
-static struct MessageQueue *mq_head;
-
-/**
- * The message queue tail
- */
-static struct MessageQueue *mq_tail;
-
-/**
- * DLL head for OverlayConnectContext DLL - to be used to clean up during shutdown
- */
-static struct OverlayConnectContext *occq_head;
-
-/**
- * DLL tail for OverlayConnectContext DLL
- */
-static struct OverlayConnectContext *occq_tail;
-
-/**
- * DLL head for RequectOverlayConnectContext DLL - to be used to clean up during
- * shutdown
- */
-static struct RequestOverlayConnectContext *roccq_head;
-
-/**
- * DLL tail for RequectOverlayConnectContext DLL
- */
-static struct RequestOverlayConnectContext *roccq_tail;
-
-/**
- * DLL head for forwarded operation contexts
- */
-static struct ForwardedOperationContext *fopcq_head;
-
-/**
- * DLL tail for forwarded operation contexts
- */
-static struct ForwardedOperationContext *fopcq_tail;
-
-/**
- * Array of hosts
- */
-static struct GNUNET_TESTBED_Host **host_list;
-
-/**
- * A list of routes
- */
-static struct Route **route_list;
-
-/**
- * A list of directly linked neighbours
- */
-static struct Slave **slave_list;
-
-/**
- * A list of peers we know about
- */
-static struct Peer **peer_list;
-
-/**
- * The hashmap of shared services
- */
-static struct GNUNET_CONTAINER_MultiHashMap *ss_map;
-
-/**
- * The event mask for the events we listen from sub-controllers
- */
-static uint64_t event_mask;
-
-/**
- * The size of the host list
- */
-static uint32_t host_list_size;
-
-/**
- * The size of the route list
- */
-static uint32_t route_list_size;
-
-/**
- * The size of directly linked neighbours list
- */
-static uint32_t slave_list_size;
-
-/**
- * The size of the peer list
- */
-static uint32_t peer_list_size;
-
-/*********/
-/* Tasks */
-/*********/
-
-/**
- * The lcf_task handle
- */
-static GNUNET_SCHEDULER_TaskIdentifier lcf_proc_task_id;
-
-/**
- * The shutdown task handle
- */
-static GNUNET_SCHEDULER_TaskIdentifier shutdown_task_id;
-
-
-/**
- * Function called to notify a client about the connection begin ready to queue
- * more data. "buf" will be NULL and "size" zero if the connection was closed
- * for writing in the meantime.
- *
- * @param cls NULL
- * @param size number of bytes available in buf
- * @param buf where the callee should write the message
- * @return number of bytes written to buf
- */
-static size_t
-transmit_ready_notify (void *cls, size_t size, void *buf)
-{
- struct MessageQueue *mq_entry;
-
- transmit_handle = NULL;
- mq_entry = mq_head;
- GNUNET_assert (NULL != mq_entry);
- if (0 == size)
- return 0;
- GNUNET_assert (ntohs (mq_entry->msg->size) <= size);
- size = ntohs (mq_entry->msg->size);
- memcpy (buf, mq_entry->msg, size);
- GNUNET_free (mq_entry->msg);
- GNUNET_SERVER_client_drop (mq_entry->client);
- GNUNET_CONTAINER_DLL_remove (mq_head, mq_tail, mq_entry);
- GNUNET_free (mq_entry);
- mq_entry = mq_head;
- if (NULL != mq_entry)
- transmit_handle =
- GNUNET_SERVER_notify_transmit_ready (mq_entry->client,
- ntohs (mq_entry->msg->size),
- GNUNET_TIME_UNIT_FOREVER_REL,
- &transmit_ready_notify, NULL);
- return size;
-}
-
-
-/**
- * Queues a message in send queue for sending to the service
- *
- * @param client the client to whom the queued message has to be sent
- * @param msg the message to queue
- */
-static void
-queue_message (struct GNUNET_SERVER_Client *client,
- struct GNUNET_MessageHeader *msg)
-{
- struct MessageQueue *mq_entry;
- uint16_t type;
- uint16_t size;
-
- type = ntohs (msg->type);
- size = ntohs (msg->size);
- GNUNET_assert ((GNUNET_MESSAGE_TYPE_TESTBED_INIT <= type) &&
- (GNUNET_MESSAGE_TYPE_TESTBED_MAX > type));
- mq_entry = GNUNET_malloc (sizeof (struct MessageQueue));
- mq_entry->msg = msg;
- mq_entry->client = client;
- GNUNET_SERVER_client_keep (client);
- LOG_DEBUG ("Queueing message of type %u, size %u for sending\n", type,
- ntohs (msg->size));
- GNUNET_CONTAINER_DLL_insert_tail (mq_head, mq_tail, mq_entry);
- if (NULL == transmit_handle)
- transmit_handle =
- GNUNET_SERVER_notify_transmit_ready (client, size,
- GNUNET_TIME_UNIT_FOREVER_REL,
- &transmit_ready_notify, NULL);
-}
-
-
-/**
- * Similar to GNUNET_realloc; however clears tail part of newly allocated memory
- *
- * @param ptr the memory block to realloc
- * @param size the size of ptr
- * @param new_size the size to which ptr has to be realloc'ed
- * @return the newly reallocated memory block
- */
-static void *
-TESTBED_realloc (void *ptr, size_t size, size_t new_size)
-{
- ptr = GNUNET_realloc (ptr, new_size);
- if (new_size > size)
- (void) memset (ptr + size, 0, new_size - size);
- return ptr;
-}
-
-
-/**
- * Function to add a host to the current list of known hosts
- *
- * @param host the host to add
- * @return GNUNET_OK on success; GNUNET_SYSERR on failure due to host-id
- * already in use
- */
-static int
-host_list_add (struct GNUNET_TESTBED_Host *host)
-{
- uint32_t host_id;
- uint32_t orig_size;
-
- host_id = GNUNET_TESTBED_host_get_id_ (host);
- orig_size = host_list_size;
- if (host_list_size <= host_id)
- {
- while (host_list_size <= host_id)
- host_list_size += LIST_GROW_STEP;
- host_list =
- TESTBED_realloc (host_list,
- sizeof (struct GNUNET_TESTBED_Host *) * orig_size,
- sizeof (struct GNUNET_TESTBED_Host *)
- * host_list_size);
- }
- if (NULL != host_list[host_id])
- {
- LOG_DEBUG ("A host with id: %u already exists\n", host_id);
- return GNUNET_SYSERR;
- }
- host_list[host_id] = host;
- return GNUNET_OK;
-}
-
-
-/**
- * Adds a route to the route list
- *
- * @param route the route to add
- */
-static void
-route_list_add (struct Route *route)
-{
- uint32_t orig_size;
-
- orig_size = route_list_size;
- if (route->dest >= route_list_size)
- {
- while (route->dest >= route_list_size)
- route_list_size += LIST_GROW_STEP;
- route_list =
- TESTBED_realloc (route_list,
- sizeof (struct Route *) * orig_size,
- sizeof (struct Route *) * route_list_size);
- }
- GNUNET_assert (NULL == route_list[route->dest]);
- route_list[route->dest] = route;
-}
-
-
-/**
- * Adds a slave to the slave array
- *
- * @param slave the slave controller to add
- */
-static void
-slave_list_add (struct Slave *slave)
-{
- uint32_t orig_size;
-
- orig_size = slave_list_size;
- if (slave->host_id >= slave_list_size)
- {
- while (slave->host_id >= slave_list_size)
- slave_list_size += LIST_GROW_STEP;
- slave_list =
- TESTBED_realloc (slave_list, sizeof (struct Slave *) * orig_size,
- sizeof (struct Slave *) * slave_list_size);
- }
- GNUNET_assert (NULL == slave_list[slave->host_id]);
- slave_list[slave->host_id] = slave;
-}
-
-
-/**
- * Adds a peer to the peer array
- *
- * @param peer the peer to add
- */
-static void
-peer_list_add (struct Peer *peer)
-{
- uint32_t orig_size;
-
- orig_size = peer_list_size;
- if (peer->id >= peer_list_size)
- {
- while (peer->id >= peer_list_size)
- peer_list_size += LIST_GROW_STEP;
- peer_list =
- TESTBED_realloc (peer_list, sizeof (struct Peer *) * orig_size,
- sizeof (struct Peer *) * peer_list_size);
- }
- GNUNET_assert (NULL == peer_list[peer->id]);
- peer_list[peer->id] = peer;
-}
-
-
-/**
- * Removes a the give peer from the peer array
- *
- * @param peer the peer to be removed
- */
-static void
-peer_list_remove (struct Peer *peer)
-{
- uint32_t id;
- uint32_t orig_size;
-
- peer_list[peer->id] = NULL;
- orig_size = peer_list_size;
- while (peer_list_size >= LIST_GROW_STEP)
- {
- for (id = peer_list_size - 1;
- (id >= peer_list_size - LIST_GROW_STEP) && (id != UINT32_MAX); id--)
- if (NULL != peer_list[id])
- break;
- if (id != ((peer_list_size - LIST_GROW_STEP) - 1))
- break;
- peer_list_size -= LIST_GROW_STEP;
- }
- if (orig_size == peer_list_size)
- return;
- peer_list =
- GNUNET_realloc (peer_list, sizeof (struct Peer *) * peer_list_size);
-}
-
-
-/**
- * Finds the route with directly connected host as destination through which
- * the destination host can be reached
- *
- * @param host_id the id of the destination host
- * @return the route with directly connected destination host; NULL if no route
- * is found
- */
-static struct Route *
-find_dest_route (uint32_t host_id)
-{
- struct Route *route;
-
- if (route_list_size <= host_id)
- return NULL;
- while (NULL != (route = route_list[host_id]))
- {
- if (route->thru == master_context->host_id)
- break;
- host_id = route->thru;
- }
- return route;
-}
-
-
-/**
- * Routes message to a host given its host_id
- *
- * @param host_id the id of the destination host
- * @param msg the message to be routed
- */
-static void
-route_message (uint32_t host_id, const struct GNUNET_MessageHeader *msg)
-{
- GNUNET_break (0);
-}
-
-
-/**
- * Send operation failure message to client
- *
- * @param client the client to which the failure message has to be sent to
- * @param operation_id the id of the failed operation
- * @param emsg the error message; can be NULL
- */
-static void
-send_operation_fail_msg (struct GNUNET_SERVER_Client *client,
- uint64_t operation_id, const char *emsg)
-{
- struct GNUNET_TESTBED_OperationFailureEventMessage *msg;
- uint16_t msize;
- uint16_t emsg_len;
-
- msize = sizeof (struct GNUNET_TESTBED_OperationFailureEventMessage);
- emsg_len = (NULL == emsg) ? 0 : strlen (emsg) + 1;
- msize += emsg_len;
- msg = GNUNET_malloc (msize);
- msg->header.size = htons (msize);
- msg->header.type = htons (GNUNET_MESSAGE_TYPE_TESTBED_OPERATIONFAILEVENT);
- msg->event_type = htonl (GNUNET_TESTBED_ET_OPERATION_FINISHED);
- msg->operation_id = GNUNET_htonll (operation_id);
- if (0 != emsg_len)
- memcpy (&msg[1], emsg, emsg_len);
- queue_message (client, &msg->header);
-}
-
-
-/**
- * Function to send generic operation success message to given client
- *
- * @param client the client to send the message to
- * @param operation_id the id of the operation which was successful
- */
-static void
-send_operation_success_msg (struct GNUNET_SERVER_Client *client,
- uint64_t operation_id)
-{
- struct GNUNET_TESTBED_GenericOperationSuccessEventMessage *msg;
- uint16_t msize;
-
- msize = sizeof (struct GNUNET_TESTBED_GenericOperationSuccessEventMessage);
- msg = GNUNET_malloc (msize);
- msg->header.size = htons (msize);
- msg->header.type = htons (GNUNET_MESSAGE_TYPE_TESTBED_GENERICOPSUCCESS);
- msg->operation_id = GNUNET_htonll (operation_id);
- msg->event_type = htonl (GNUNET_TESTBED_ET_OPERATION_FINISHED);
- queue_message (client, &msg->header);
-}
-
-
-/**
- * Callback which will be called to after a host registration succeeded or failed
- *
- * @param cls the handle to the slave at which the registration is completed
- * @param emsg the error message; NULL if host registration is successful
- */
-static void
-hr_completion (void *cls, const char *emsg);
-
-
-/**
- * Attempts to register the next host in the host registration queue
- *
- * @param slave the slave controller whose host registration queue is checked
- * for host registrations
- */
-static void
-register_next_host (struct Slave *slave)
-{
- struct HostRegistration *hr;
-
- hr = slave->hr_dll_head;
- GNUNET_assert (NULL != hr);
- GNUNET_assert (NULL == slave->rhandle);
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Registering host %u at %u\n",
- GNUNET_TESTBED_host_get_id_ (hr->host),
- GNUNET_TESTBED_host_get_id_ (host_list[slave->host_id]));
- slave->rhandle = GNUNET_TESTBED_register_host (slave->controller,
- hr->host,
- hr_completion,
- slave);
-}
-
-
-/**
- * Callback which will be called to after a host registration succeeded or failed
- *
- * @param cls the handle to the slave at which the registration is completed
- * @param emsg the error message; NULL if host registration is successful
- */
-static void
-hr_completion (void *cls, const char *emsg)
-{
- struct Slave *slave = cls;
- struct HostRegistration *hr;
-
- slave->rhandle = NULL;
- hr = slave->hr_dll_head;
- GNUNET_assert (NULL != hr);
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Registering host %u at %u successful\n",
- GNUNET_TESTBED_host_get_id_ (hr->host),
- GNUNET_TESTBED_host_get_id_ (host_list[slave->host_id]));
- GNUNET_CONTAINER_DLL_remove (slave->hr_dll_head,
- slave->hr_dll_tail,
- hr);
- if (NULL != hr->cb)
- hr->cb (hr->cb_cls, emsg);
- GNUNET_free (hr);
- if (NULL != slave->hr_dll_head)
- register_next_host (slave);
-}
-
-
-/**
- * Adds a host registration's request to a slave's registration queue
- *
- * @param slave the slave controller at which the given host has to be
- * registered
- * @param cb the host registration completion callback
- * @param cb_cls the closure for the host registration completion callback
- * @param host the host which has to be registered
- */
-static void
-queue_host_registration (struct Slave *slave,
- GNUNET_TESTBED_HostRegistrationCompletion cb,
- void *cb_cls,
- struct GNUNET_TESTBED_Host *host)
-{
- struct HostRegistration *hr;
- int call_register;
-
- LOG (GNUNET_ERROR_TYPE_DEBUG,
- "Queueing host registration for host %u at %u\n",
- GNUNET_TESTBED_host_get_id_ (host),
- GNUNET_TESTBED_host_get_id_ (host_list[slave->host_id]));
- hr = GNUNET_malloc (sizeof (struct HostRegistration));
- hr->cb = cb;
- hr->cb_cls = cb_cls;
- hr->host = host;
- call_register = (NULL == slave->hr_dll_head) ? GNUNET_YES : GNUNET_NO;
- GNUNET_CONTAINER_DLL_insert_tail (slave->hr_dll_head,
- slave->hr_dll_tail,
- hr);
- if (GNUNET_YES == call_register)
- register_next_host (slave);
-}
-
-
-/**
- * The Link Controller forwarding task
- *
- * @param cls the LCFContext
- * @param tc the Task context from scheduler
- */
-static void
-lcf_proc_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
-
-
-/**
- * Completion callback for host registrations while forwarding Link Controller messages
- *
- * @param cls the LCFContext
- * @param emsg the error message; NULL if host registration is successful
- */
-static void
-lcf_proc_cc (void *cls, const char *emsg)
-{
- struct LCFContext *lcf = cls;
-
- GNUNET_assert (GNUNET_SCHEDULER_NO_TASK == lcf_proc_task_id);
- switch (lcf->state)
- {
- case INIT:
- if (NULL != emsg)
- goto registration_error;
- lcf->state = DELEGATED_HOST_REGISTERED;
- lcf_proc_task_id = GNUNET_SCHEDULER_add_now (&lcf_proc_task, lcf);
- break;
- case DELEGATED_HOST_REGISTERED:
- if (NULL != emsg)
- goto registration_error;
- lcf->state = SLAVE_HOST_REGISTERED;
- lcf_proc_task_id = GNUNET_SCHEDULER_add_now (&lcf_proc_task, lcf);
- break;
- default:
- GNUNET_assert (0); /* Shouldn't reach here */
- }
- return;
-
- registration_error:
- LOG (GNUNET_ERROR_TYPE_WARNING, "Host registration failed with message: %s\n",
- emsg);
- lcf->state = FINISHED;
- lcf_proc_task_id = GNUNET_SCHEDULER_add_now (&lcf_proc_task, lcf);
-}
-
-
-/**
- * Callback to relay the reply msg of a forwarded operation back to the client
- *
- * @param cls ForwardedOperationContext
- * @param msg the message to relay
- */
-static void
-forwarded_operation_reply_relay (void *cls,
- const struct GNUNET_MessageHeader *msg)
-{
- struct ForwardedOperationContext *fopc = cls;
- struct GNUNET_MessageHeader *dup_msg;
- uint16_t msize;
-
- msize = ntohs (msg->size);
- LOG_DEBUG ("Relaying message with type: %u, size: %u\n", ntohs (msg->type),
- msize);
- dup_msg = GNUNET_copy_message (msg);
- queue_message (fopc->client, dup_msg);
- GNUNET_SERVER_client_drop (fopc->client);
- GNUNET_SCHEDULER_cancel (fopc->timeout_task);
- GNUNET_CONTAINER_DLL_remove (fopcq_head, fopcq_tail, fopc);
- GNUNET_free (fopc);
-}
-
-
-/**
- * Task to free resources when forwarded operation has been timedout
- *
- * @param cls the ForwardedOperationContext
- * @param tc the task context from scheduler
- */
-static void
-forwarded_operation_timeout (void *cls,
- const struct GNUNET_SCHEDULER_TaskContext *tc)
-{
- struct ForwardedOperationContext *fopc = cls;
-
- GNUNET_TESTBED_forward_operation_msg_cancel_ (fopc->opc);
- LOG (GNUNET_ERROR_TYPE_WARNING, "A forwarded operation has timed out\n");
- send_operation_fail_msg (fopc->client, fopc->operation_id, "Timeout");
- GNUNET_SERVER_client_drop (fopc->client);
- GNUNET_CONTAINER_DLL_remove (fopcq_head, fopcq_tail, fopc);
- GNUNET_free (fopc);
-}
-
-
-/**
- * The Link Controller forwarding task
- *
- * @param cls the LCFContext
- * @param tc the Task context from scheduler
- */
-static void
-lcf_proc_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
-
-
-/**
- * Callback to be called when forwarded link controllers operation is
- * successfull. We have to relay the reply msg back to the client
- *
- * @param cls the LCFContext
- * @param msg the message to relay
- */
-static void
-lcf_forwarded_operation_reply_relay (void *cls,
- const struct GNUNET_MessageHeader *msg)
-{
- struct LCFContext *lcf = cls;
-
- GNUNET_assert (NULL != lcf->fopc);
- forwarded_operation_reply_relay (lcf->fopc, msg);
- lcf->fopc = NULL;
- GNUNET_assert (GNUNET_SCHEDULER_NO_TASK == lcf_proc_task_id);
- lcf_proc_task_id = GNUNET_SCHEDULER_add_now (&lcf_proc_task, lcf);
-}
-
-
-/**
- * Task to free resources when forwarded link controllers has been timedout
- *
- * @param cls the LCFContext
- * @param tc the task context from scheduler
- */
-static void
-lcf_forwarded_operation_timeout (void *cls,
- const struct GNUNET_SCHEDULER_TaskContext *tc)
-{
- struct LCFContext *lcf = cls;
-
- GNUNET_assert (NULL != lcf->fopc);
- lcf->fopc->timeout_task = GNUNET_SCHEDULER_NO_TASK;
- forwarded_operation_timeout (lcf->fopc, tc);
- lcf->fopc = NULL;
- GNUNET_assert (GNUNET_SCHEDULER_NO_TASK == lcf_proc_task_id);
- lcf_proc_task_id = GNUNET_SCHEDULER_add_now (&lcf_proc_task, lcf);
-}
-
-
-/**
- * The Link Controller forwarding task
- *
- * @param cls the LCFContext
- * @param tc the Task context from scheduler
- */
-static void
-lcf_proc_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
-{
- struct LCFContext *lcf = cls;
- struct LCFContextQueue *lcfq;
-
- lcf_proc_task_id = GNUNET_SCHEDULER_NO_TASK;
- switch (lcf->state)
- {
- case INIT:
- if (GNUNET_NO ==
- GNUNET_TESTBED_is_host_registered_ (host_list[lcf->delegated_host_id],
- lcf->gateway->controller))
- {
- queue_host_registration (lcf->gateway,
- lcf_proc_cc, lcf,
- host_list[lcf->delegated_host_id]);
- }
- else
- {
- lcf->state = DELEGATED_HOST_REGISTERED;
- lcf_proc_task_id = GNUNET_SCHEDULER_add_now (&lcf_proc_task, lcf);
- }
- break;
- case DELEGATED_HOST_REGISTERED:
- if (GNUNET_NO ==
- GNUNET_TESTBED_is_host_registered_ (host_list[lcf->slave_host_id],
- lcf->gateway->controller))
- {
- queue_host_registration (lcf->gateway,
- lcf_proc_cc, lcf,
- host_list[lcf->slave_host_id]);
- }
- else
- {
- lcf->state = SLAVE_HOST_REGISTERED;
- lcf_proc_task_id = GNUNET_SCHEDULER_add_now (&lcf_proc_task, lcf);
- }
- break;
- case SLAVE_HOST_REGISTERED:
- lcf->fopc = GNUNET_malloc (sizeof (struct ForwardedOperationContext));
- lcf->fopc->client = lcf->client;
- lcf->fopc->operation_id = lcf->operation_id;
- lcf->fopc->type = OP_LINK_CONTROLLERS;
- lcf->fopc->opc =
- GNUNET_TESTBED_forward_operation_msg_ (lcf->gateway->controller,
- lcf->operation_id,
- &lcf->msg->header,
- &lcf_forwarded_operation_reply_relay,
- lcf);
- lcf->fopc->timeout_task =
- GNUNET_SCHEDULER_add_delayed (TIMEOUT, &lcf_forwarded_operation_timeout,
- lcf);
- GNUNET_CONTAINER_DLL_insert_tail (fopcq_head, fopcq_tail, lcf->fopc);
- lcf->state = FINISHED;
- break;
- case FINISHED:
- lcfq = lcfq_head;
- GNUNET_assert (lcfq->lcf == lcf);
- GNUNET_free (lcf->msg);
- GNUNET_free (lcf);
- GNUNET_CONTAINER_DLL_remove (lcfq_head, lcfq_tail, lcfq);
- GNUNET_free (lcfq);
- if (NULL != lcfq_head)
- lcf_proc_task_id =
- GNUNET_SCHEDULER_add_now (&lcf_proc_task, lcfq_head->lcf);
- }
-}
-
-
-/**
- * Cleans up ForwardedOverlayConnectContext
- *
- * @param focc the ForwardedOverlayConnectContext to cleanup
- */
-static void
-cleanup_focc (struct ForwardedOverlayConnectContext *focc)
-{
- GNUNET_free_non_null (focc->orig_msg);
- GNUNET_free (focc);
-}
-
-
-/**
- * Processes a forwarded overlay connect context in the queue of the given RegisteredHostContext
- *
- * @param rhc the RegisteredHostContext
- */
-static void
-process_next_focc (struct RegisteredHostContext *rhc);
-
-
-/**
- * Timeout task for cancelling a forwarded overlay connect connect
- *
- * @param cls the ForwardedOverlayConnectContext
- * @param tc the task context from the scheduler
- */
-static void
-forwarded_overlay_connect_timeout (void *cls,
- const struct GNUNET_SCHEDULER_TaskContext
- *tc)
-{
- struct ForwardedOperationContext *fopc = cls;
- struct RegisteredHostContext *rhc;
- struct ForwardedOverlayConnectContext *focc;
-
- rhc = fopc->cls;
- focc = rhc->focc_dll_head;
- GNUNET_CONTAINER_DLL_remove (rhc->focc_dll_head, rhc->focc_dll_tail, focc);
- cleanup_focc (focc);
- LOG_DEBUG ("Overlay linking between peers %u and %u failed\n",
- focc->peer1, focc->peer2);
- forwarded_operation_timeout (cls, tc);
- if (NULL != rhc->focc_dll_head)
- process_next_focc (rhc);
-}
-
-
-/**
- * Callback to be called when forwarded overlay connection operation has a reply
- * from the sub-controller successfull. We have to relay the reply msg back to
- * the client
- *
- * @param cls ForwardedOperationContext
- * @param msg the peer create success message
- */
-static void
-forwarded_overlay_connect_listener (void *cls,
- const struct GNUNET_MessageHeader *msg)
-{
- struct ForwardedOperationContext *fopc = cls;
- struct RegisteredHostContext *rhc;
- struct ForwardedOverlayConnectContext *focc;
-
- rhc = fopc->cls;
- forwarded_operation_reply_relay (cls, msg);
- focc = rhc->focc_dll_head;
- GNUNET_CONTAINER_DLL_remove (rhc->focc_dll_head, rhc->focc_dll_tail, focc);
- cleanup_focc (focc);
- if (NULL != rhc->focc_dll_head)
- process_next_focc (rhc);
-}
-
-
-/**
- * Processes a forwarded overlay connect context in the queue of the given RegisteredHostContext
- *
- * @param rhc the RegisteredHostContext
- */
-static void
-process_next_focc (struct RegisteredHostContext *rhc)
-{
- struct ForwardedOperationContext *fopc;
- struct ForwardedOverlayConnectContext *focc;
-
- focc = rhc->focc_dll_head;
- GNUNET_assert (NULL != focc);
- GNUNET_assert (RHC_OL_CONNECT == rhc->state);
- fopc = GNUNET_malloc (sizeof (struct ForwardedOperationContext));
- GNUNET_SERVER_client_keep (rhc->client);
- fopc->client = rhc->client;
- fopc->operation_id = focc->operation_id;
- fopc->cls = rhc;
- fopc->type = OP_OVERLAY_CONNECT;
- fopc->opc =
- GNUNET_TESTBED_forward_operation_msg_ (rhc->gateway->controller,
- focc->operation_id, focc->orig_msg,
- &forwarded_overlay_connect_listener,
- fopc);
- GNUNET_free (focc->orig_msg);
- focc->orig_msg = NULL;
- fopc->timeout_task =
- GNUNET_SCHEDULER_add_delayed (TIMEOUT, &forwarded_overlay_connect_timeout,
- fopc);
- GNUNET_CONTAINER_DLL_insert_tail (fopcq_head, fopcq_tail, fopc);
-}
-
-
-/**
- * Callback for event from slave controllers
- *
- * @param cls struct Slave *
- * @param event information about the event
- */
-static void
-slave_event_callback (void *cls,
- const struct GNUNET_TESTBED_EventInformation *event)
-{
- struct RegisteredHostContext *rhc;
- struct GNUNET_CONFIGURATION_Handle *cfg;
- struct GNUNET_TESTBED_Operation *old_op;
-
- /* We currently only get here when working on RegisteredHostContexts */
- GNUNET_assert (GNUNET_TESTBED_ET_OPERATION_FINISHED == event->type);
- rhc = event->details.operation_finished.op_cls;
- GNUNET_assert (rhc->sub_op == event->details.operation_finished.operation);
- switch (rhc->state)
- {
- case RHC_GET_CFG:
- cfg = event->details.operation_finished.generic;
- old_op = rhc->sub_op;
- rhc->state = RHC_LINK;
- rhc->sub_op =
- GNUNET_TESTBED_controller_link (rhc,
- rhc->gateway->controller,
- rhc->reg_host,
- rhc->host,
- cfg,
- GNUNET_NO);
- GNUNET_TESTBED_operation_done (old_op);
- break;
- case RHC_LINK:
- LOG_DEBUG ("OL: Linking controllers successfull\n");
- GNUNET_TESTBED_operation_done (rhc->sub_op);
- rhc->sub_op = NULL;
- rhc->state = RHC_OL_CONNECT;
- process_next_focc (rhc);
- break;
- default:
- GNUNET_assert (0);
- }
-}
-
-
-/**
- * Callback to signal successfull startup of the controller process
- *
- * @param cls the handle to the slave whose status is to be found here
- * @param cfg the configuration with which the controller has been started;
- * NULL if status is not GNUNET_OK
- * @param status GNUNET_OK if the startup is successfull; GNUNET_SYSERR if not,
- * GNUNET_TESTBED_controller_stop() shouldn't be called in this case
- */
-static void
-slave_status_callback (void *cls, const struct GNUNET_CONFIGURATION_Handle *cfg,
- int status)
-{
- struct Slave *slave = cls;
- struct LinkControllersContext *lcc;
-
- lcc = slave->lcc;
- if (GNUNET_SYSERR == status)
- {
- slave->controller_proc = NULL;
- slave_list[slave->host_id] = NULL;
- if (NULL != slave->cfg)
- GNUNET_CONFIGURATION_destroy (slave->cfg);
- GNUNET_free (slave);
- slave = NULL;
- LOG (GNUNET_ERROR_TYPE_WARNING, "Unexpected slave shutdown\n");
- GNUNET_SCHEDULER_shutdown (); /* We too shutdown */
- goto clean_lcc;
- }
- slave->controller =
- GNUNET_TESTBED_controller_connect (cfg, host_list[slave->host_id],
- event_mask,
- &slave_event_callback, slave);
- if (NULL != slave->controller)
- {
- send_operation_success_msg (lcc->client, lcc->operation_id);
- slave->cfg = GNUNET_CONFIGURATION_dup (cfg);
- }
- else
- {
- send_operation_fail_msg (lcc->client, lcc->operation_id,
- "Could not connect to delegated controller");
- GNUNET_TESTBED_controller_stop (slave->controller_proc);
- slave_list[slave->host_id] = NULL;
- GNUNET_free (slave);
- slave = NULL;
- }
-
- clean_lcc:
- if (NULL != lcc)
- {
- if (NULL != lcc->client)
- {
- GNUNET_SERVER_receive_done (lcc->client, GNUNET_OK);
- GNUNET_SERVER_client_drop (lcc->client);
- lcc->client = NULL;
- }
- GNUNET_free (lcc);
- }
- if (NULL != slave)
- slave->lcc = NULL;
-}
-
-
-/**
- * Message handler for GNUNET_MESSAGE_TYPE_TESTBED_INIT messages
- *
- * @param cls NULL
- * @param client identification of the client
- * @param message the actual message
- */
-static void
-handle_init (void *cls, struct GNUNET_SERVER_Client *client,
- const struct GNUNET_MessageHeader *message)
-{
- const struct GNUNET_TESTBED_InitMessage *msg;
- struct GNUNET_TESTBED_Host *host;
- const char *controller_hostname;
- uint16_t msize;
-
- if (NULL != master_context)
- {
- LOG_DEBUG ("We are being connected to laterally\n");
- GNUNET_SERVER_receive_done (client, GNUNET_OK);
- return;
- }
- msg = (const struct GNUNET_TESTBED_InitMessage *) message;
- msize = ntohs (message->size);
- if (msize <= sizeof (struct GNUNET_TESTBED_InitMessage))
- {
- GNUNET_break (0);
- GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
- return;
- }
- msize -= sizeof (struct GNUNET_TESTBED_InitMessage);
- controller_hostname = (const char *) &msg[1];
- if ('\0' != controller_hostname[msize - 1])
- {
- GNUNET_break (0);
- GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
- return;
- }
- master_context = GNUNET_malloc (sizeof (struct Context));
- GNUNET_SERVER_client_keep (client);
- master_context->client = client;
- master_context->host_id = ntohl (msg->host_id);
- master_context->master_ip = GNUNET_strdup (controller_hostname);
- LOG_DEBUG ("Our IP: %s\n", master_context->master_ip);
- master_context->system =
- GNUNET_TESTING_system_create ("testbed", master_context->master_ip, hostname);
- host =
- GNUNET_TESTBED_host_create_with_id (master_context->host_id,
- master_context->master_ip,
- NULL,
- 0);
- host_list_add (host);
- LOG_DEBUG ("Created master context with host ID: %u\n",
- master_context->host_id);
- GNUNET_SERVER_receive_done (client, GNUNET_OK);
-}
-
-
-/**
- * Message handler for GNUNET_MESSAGE_TYPE_TESTBED_ADDHOST messages
- *
- * @param cls NULL
- * @param client identification of the client
- * @param message the actual message
- */
-static void
-handle_add_host (void *cls, struct GNUNET_SERVER_Client *client,
- const struct GNUNET_MessageHeader *message)
-{
- struct GNUNET_TESTBED_Host *host;
- const struct GNUNET_TESTBED_AddHostMessage *msg;
- struct GNUNET_TESTBED_HostConfirmedMessage *reply;
- char *username;
- char *hostname;
- char *emsg;
- uint32_t host_id;
- uint16_t username_length;
- uint16_t hostname_length;
- uint16_t reply_size;
- uint16_t msize;
-
- msg = (const struct GNUNET_TESTBED_AddHostMessage *) message;
- msize = ntohs (msg->header.size);
- username = (char *) &msg[1];
- username_length = ntohs (msg->user_name_length);
- if (0 != username_length)
- username_length++;
- /* msg must contain hostname */
- GNUNET_assert (msize > (sizeof (struct GNUNET_TESTBED_AddHostMessage) +
- username_length + 1));
- if (0 != username_length)
- GNUNET_assert ('\0' == username[username_length - 1]);
- hostname = username + username_length;
- hostname_length =
- msize - (sizeof (struct GNUNET_TESTBED_AddHostMessage) + username_length);
- GNUNET_assert ('\0' == hostname[hostname_length - 1]);
- GNUNET_assert (strlen (hostname) == hostname_length - 1);
- host_id = ntohl (msg->host_id);
- LOG_DEBUG ("Received ADDHOST %u message\n", host_id);
- LOG_DEBUG ("-------host id: %u\n", host_id);
- LOG_DEBUG ("-------hostname: %s\n", hostname);
- if (0 != username_length)
- LOG_DEBUG ("-------username: %s\n", username);
- else
- {
- LOG_DEBUG ("-------username: NULL\n");
- username = NULL;
- }
- LOG_DEBUG ("-------ssh port: %u\n", ntohs (msg->ssh_port));
- host =
- GNUNET_TESTBED_host_create_with_id (host_id, hostname, username,
- ntohs (msg->ssh_port));
- GNUNET_assert (NULL != host);
- reply_size = sizeof (struct GNUNET_TESTBED_HostConfirmedMessage);
- if (GNUNET_OK != host_list_add (host))
- {
- /* We are unable to add a host */
- emsg = "A host exists with given host-id";
- LOG_DEBUG ("%s: %u", emsg, host_id);
- GNUNET_TESTBED_host_destroy (host);
- reply_size += strlen (emsg) + 1;
- reply = GNUNET_malloc (reply_size);
- memcpy (&reply[1], emsg, strlen (emsg) + 1);
- }
- else
- {
- LOG_DEBUG ("Added host %u at %u\n",
- host_id, master_context->host_id);
- reply = GNUNET_malloc (reply_size);
- }
- reply->header.type = htons (GNUNET_MESSAGE_TYPE_TESTBED_ADDHOSTCONFIRM);
- reply->header.size = htons (reply_size);
- reply->host_id = htonl (host_id);
- queue_message (client, &reply->header);
- GNUNET_SERVER_receive_done (client, GNUNET_OK);
-}
-
-
-/**
- * Iterator over hash map entries.
- *
- * @param cls closure
- * @param key current key code
- * @param value value in the hash map
- * @return GNUNET_YES if we should continue to
- * iterate,
- * GNUNET_NO if not.
- */
-int
-ss_exists_iterator (void *cls, const struct GNUNET_HashCode *key, void *value)
-{
- struct SharedService *queried_ss = cls;
- struct SharedService *ss = value;
-
- if (0 == strcmp (ss->name, queried_ss->name))
- return GNUNET_NO;
- else
- return GNUNET_YES;
-}
-
-
-/**
- * Message handler for GNUNET_MESSAGE_TYPE_TESTBED_ADDHOST messages
- *
- * @param cls NULL
- * @param client identification of the client
- * @param message the actual message
- */
-static void
-handle_configure_shared_service (void *cls, struct GNUNET_SERVER_Client *client,
- const struct GNUNET_MessageHeader *message)
-{
- const struct GNUNET_TESTBED_ConfigureSharedServiceMessage *msg;
- struct SharedService *ss;
- char *service_name;
- struct GNUNET_HashCode hash;
- uint16_t msg_size;
- uint16_t service_name_size;
-
- msg = (const struct GNUNET_TESTBED_ConfigureSharedServiceMessage *) message;
- msg_size = ntohs (message->size);
- if (msg_size <= sizeof (struct GNUNET_TESTBED_ConfigureSharedServiceMessage))
- {
- GNUNET_break (0);
- GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
- return;
- }
- service_name_size =
- msg_size - sizeof (struct GNUNET_TESTBED_ConfigureSharedServiceMessage);
- service_name = (char *) &msg[1];
- if ('\0' != service_name[service_name_size - 1])
- {
- GNUNET_break (0);
- GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
- return;
- }
- LOG_DEBUG ("Received service sharing request for %s, with %d peers\n",
- service_name, ntohl (msg->num_peers));
- if (ntohl (msg->host_id) != master_context->host_id)
- {
- route_message (ntohl (msg->host_id), message);
- GNUNET_SERVER_receive_done (client, GNUNET_OK);
- return;
- }
- GNUNET_SERVER_receive_done (client, GNUNET_OK);
- ss = GNUNET_malloc (sizeof (struct SharedService));
- ss->name = strdup (service_name);
- ss->num_shared = ntohl (msg->num_peers);
- GNUNET_CRYPTO_hash (ss->name, service_name_size, &hash);
- if (GNUNET_SYSERR ==
- GNUNET_CONTAINER_multihashmap_get_multiple (ss_map, &hash,
- &ss_exists_iterator, ss))
- {
- LOG (GNUNET_ERROR_TYPE_WARNING,
- "Service %s already configured as a shared service. "
- "Ignoring service sharing request \n", ss->name);
- GNUNET_free (ss->name);
- GNUNET_free (ss);
- return;
- }
- GNUNET_CONTAINER_multihashmap_put (ss_map, &hash, ss,
- GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE);
-}
-
-
-/**
- * Message handler for GNUNET_MESSAGE_TYPE_TESTBED_LCONTROLLERS message
- *
- * @param cls NULL
- * @param client identification of the client
- * @param message the actual message
- */
-static void
-handle_link_controllers (void *cls, struct GNUNET_SERVER_Client *client,
- const struct GNUNET_MessageHeader *message)
-{
- const struct GNUNET_TESTBED_ControllerLinkMessage *msg;
- struct GNUNET_CONFIGURATION_Handle *cfg;
- struct LCFContextQueue *lcfq;
- struct Route *route;
- struct Route *new_route;
- char *config;
- uLongf dest_size;
- size_t config_size;
- uint32_t delegated_host_id;
- uint32_t slave_host_id;
- uint16_t msize;
-
- if (NULL == master_context)
- {
- GNUNET_break (0);
- GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
- return;
- }
- msize = ntohs (message->size);
- if (sizeof (struct GNUNET_TESTBED_ControllerLinkMessage) >= msize)
- {
- GNUNET_break (0);
- GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
- return;
- }
- msg = (const struct GNUNET_TESTBED_ControllerLinkMessage *) message;
- delegated_host_id = ntohl (msg->delegated_host_id);
- if (delegated_host_id == master_context->host_id)
- {
- GNUNET_break (0);
- LOG (GNUNET_ERROR_TYPE_WARNING, "Trying to link ourselves\n");
- GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
- return;
- }
- if ((delegated_host_id >= host_list_size) ||
- (NULL == host_list[delegated_host_id]))
- {
- LOG (GNUNET_ERROR_TYPE_WARNING,
- "Delegated host %u not registered with us\n", delegated_host_id);
- GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
- return;
- }
- slave_host_id = ntohl (msg->slave_host_id);
- if ((slave_host_id >= host_list_size) || (NULL == host_list[slave_host_id]))
- {
- LOG (GNUNET_ERROR_TYPE_WARNING, "Slave host %u not registered with us\n",
- slave_host_id);
- GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
- return;
- }
- if (slave_host_id == delegated_host_id)
- {
- LOG (GNUNET_ERROR_TYPE_WARNING, "Slave and delegated host are same\n");
- GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
- return;
- }
-
- if (slave_host_id == master_context->host_id) /* Link from us */
- {
- struct Slave *slave;
- struct LinkControllersContext *lcc;
-
- msize -= sizeof (struct GNUNET_TESTBED_ControllerLinkMessage);
- config_size = ntohs (msg->config_size);
- if ((delegated_host_id < slave_list_size) && (NULL != slave_list[delegated_host_id])) /* We have already added */
- {
- LOG (GNUNET_ERROR_TYPE_WARNING, "Host %u already connected\n",
- delegated_host_id);
- GNUNET_SERVER_receive_done (client, GNUNET_OK);
- return;
- }
- config = GNUNET_malloc (config_size);
- dest_size = (uLongf) config_size;
- if (Z_OK !=
- uncompress ((Bytef *) config, &dest_size, (const Bytef *) &msg[1],
- (uLong) msize))
- {
- GNUNET_break (0); /* Compression error */
- GNUNET_free (config);
- GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
- return;
- }
- if (config_size != dest_size)
- {
- LOG (GNUNET_ERROR_TYPE_WARNING, "Uncompressed config size mismatch\n");
- GNUNET_free (config);
- GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
- return;
- }
- cfg = GNUNET_CONFIGURATION_create (); /* Free here or in lcfcontext */
- if (GNUNET_OK !=
- GNUNET_CONFIGURATION_deserialize (cfg, config, config_size, GNUNET_NO))
- {
- GNUNET_break (0); /* Configuration parsing error */
- GNUNET_free (config);
- GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
- return;
- }
- GNUNET_free (config);
- if ((delegated_host_id < slave_list_size) &&
- (NULL != slave_list[delegated_host_id]))
- {
- GNUNET_break (0); /* Configuration parsing error */
- GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
- return;
- }
- slave = GNUNET_malloc (sizeof (struct Slave));
- slave->host_id = delegated_host_id;
- slave->reghost_map = GNUNET_CONTAINER_multihashmap_create (100, GNUNET_NO);
- slave_list_add (slave);
- if (1 != msg->is_subordinate)
- {
- slave->controller =
- GNUNET_TESTBED_controller_connect (cfg, host_list[slave->host_id],
- event_mask,
- &slave_event_callback, slave);
- slave->cfg = cfg;
- if (NULL != slave->controller)
- send_operation_success_msg (client, GNUNET_ntohll (msg->operation_id));
- else
- send_operation_fail_msg (client, GNUNET_ntohll (msg->operation_id),
- "Could not connect to delegated controller");
- GNUNET_SERVER_receive_done (client, GNUNET_OK);
- return;
- }
- lcc = GNUNET_malloc (sizeof (struct LinkControllersContext));
- lcc->operation_id = GNUNET_ntohll (msg->operation_id);
- GNUNET_SERVER_client_keep (client);
- lcc->client = client;
- slave->lcc = lcc;
- slave->controller_proc =
- GNUNET_TESTBED_controller_start (master_context->master_ip,
- host_list[slave->host_id], cfg,
- &slave_status_callback, slave);
- GNUNET_CONFIGURATION_destroy (cfg);
- new_route = GNUNET_malloc (sizeof (struct Route));
- new_route->dest = delegated_host_id;
- new_route->thru = master_context->host_id;
- route_list_add (new_route);
- return;
- }
-
- /* Route the request */
- if (slave_host_id >= route_list_size)
- {
- LOG (GNUNET_ERROR_TYPE_WARNING, "No route towards slave host");
- GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
- return;
- }
- lcfq = GNUNET_malloc (sizeof (struct LCFContextQueue));
- lcfq->lcf = GNUNET_malloc (sizeof (struct LCFContext));
- lcfq->lcf->delegated_host_id = delegated_host_id;
- lcfq->lcf->slave_host_id = slave_host_id;
- route = find_dest_route (slave_host_id);
- GNUNET_assert (NULL != route); /* because we add routes carefully */
- GNUNET_assert (route->dest < slave_list_size);
- GNUNET_assert (NULL != slave_list[route->dest]);
- lcfq->lcf->state = INIT;
- lcfq->lcf->operation_id = GNUNET_ntohll (msg->operation_id);
- lcfq->lcf->gateway = slave_list[route->dest];
- lcfq->lcf->msg = GNUNET_malloc (msize);
- (void) memcpy (lcfq->lcf->msg, msg, msize);
- GNUNET_SERVER_client_keep (client);
- lcfq->lcf->client = client;
- if (NULL == lcfq_head)
- {
- GNUNET_assert (GNUNET_SCHEDULER_NO_TASK == lcf_proc_task_id);
- GNUNET_CONTAINER_DLL_insert_tail (lcfq_head, lcfq_tail, lcfq);
- lcf_proc_task_id = GNUNET_SCHEDULER_add_now (&lcf_proc_task, lcfq->lcf);
- }
- else
- GNUNET_CONTAINER_DLL_insert_tail (lcfq_head, lcfq_tail, lcfq);
- /* FIXME: Adding a new route should happen after the controllers are linked
- * successfully */
- if (1 != msg->is_subordinate)
- {
- GNUNET_SERVER_receive_done (client, GNUNET_OK);
- return;
- }
- if ((delegated_host_id < route_list_size)
- && (NULL != route_list[delegated_host_id]))
- {
- GNUNET_break_op (0); /* Are you trying to link delegated host twice
- with is subordinate flag set to GNUNET_YES? */
- GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
- return;
- }
- new_route = GNUNET_malloc (sizeof (struct Route));
- new_route->dest = delegated_host_id;
- new_route->thru = route->dest;
- route_list_add (new_route);
- GNUNET_SERVER_receive_done (client, GNUNET_OK);
-}
-
-
-/**
- * The task to be executed if the forwarded peer create operation has been
- * timed out
- *
- * @param cls the FowardedOperationContext
- * @param tc the TaskContext from the scheduler
- */
-static void
-peer_create_forward_timeout (void *cls,
- const struct GNUNET_SCHEDULER_TaskContext *tc)
-{
- struct ForwardedOperationContext *fopc = cls;
-
- GNUNET_free (fopc->cls);
- forwarded_operation_timeout (fopc, tc);
-}
-
-
-/**
- * Callback to be called when forwarded peer create operation is successfull. We
- * have to relay the reply msg back to the client
- *
- * @param cls ForwardedOperationContext
- * @param msg the peer create success message
- */
-static void
-peer_create_success_cb (void *cls, const struct GNUNET_MessageHeader *msg)
-{
- struct ForwardedOperationContext *fopc = cls;
- struct Peer *remote_peer;
-
- if (ntohs (msg->type) == GNUNET_MESSAGE_TYPE_TESTBED_PEERCREATESUCCESS)
- {
- GNUNET_assert (NULL != fopc->cls);
- remote_peer = fopc->cls;
- peer_list_add (remote_peer);
- }
- forwarded_operation_reply_relay (fopc, msg);
-}
-
-
-/**
- * Function to destroy a peer
- *
- * @param peer the peer structure to destroy
- */
-static void
-destroy_peer (struct Peer *peer)
-{
- GNUNET_break (0 == peer->reference_cnt);
- if (GNUNET_YES == peer->is_remote)
- {
- peer_list_remove (peer);
- GNUNET_free (peer);
- return;
- }
- if (GNUNET_YES == peer->details.local.is_running)
- {
- GNUNET_TESTING_peer_stop (peer->details.local.peer);
- peer->details.local.is_running = GNUNET_NO;
- }
- GNUNET_TESTING_peer_destroy (peer->details.local.peer);
- GNUNET_CONFIGURATION_destroy (peer->details.local.cfg);
- peer_list_remove (peer);
- GNUNET_free (peer);
-}
-
-
-/**
- * Callback to be called when forwarded peer destroy operation is successfull. We
- * have to relay the reply msg back to the client
- *
- * @param cls ForwardedOperationContext
- * @param msg the peer create success message
- */
-static void
-peer_destroy_success_cb (void *cls, const struct GNUNET_MessageHeader *msg)
-{
- struct ForwardedOperationContext *fopc = cls;
- struct Peer *remote_peer;
-
- if (GNUNET_MESSAGE_TYPE_TESTBED_GENERICOPSUCCESS == ntohs (msg->type))
- {
- remote_peer = fopc->cls;
- GNUNET_assert (NULL != remote_peer);
- remote_peer->destroy_flag = GNUNET_YES;
- if (0 == remote_peer->reference_cnt)
- destroy_peer (remote_peer);
- }
- forwarded_operation_reply_relay (fopc, msg);
-}
-
-
-
-/**
- * Handler for GNUNET_MESSAGE_TYPE_TESTBED_CREATEPEER messages
- *
- * @param cls NULL
- * @param client identification of the client
- * @param message the actual message
- */
-static void
-handle_peer_create (void *cls, struct GNUNET_SERVER_Client *client,
- const struct GNUNET_MessageHeader *message)
-{
- const struct GNUNET_TESTBED_PeerCreateMessage *msg;
- struct GNUNET_TESTBED_PeerCreateSuccessEventMessage *reply;
- struct GNUNET_CONFIGURATION_Handle *cfg;
- struct ForwardedOperationContext *fo_ctxt;
- struct Route *route;
- struct Peer *peer;
- char *config;
- size_t dest_size;
- int ret;
- uint32_t config_size;
- uint32_t host_id;
- uint32_t peer_id;
- uint16_t msize;
-
-
- msize = ntohs (message->size);
- if (msize <= sizeof (struct GNUNET_TESTBED_PeerCreateMessage))
- {
- GNUNET_break (0); /* We need configuration */
- GNUNET_SERVER_receive_done (client, GNUNET_OK);
- return;
- }
- msg = (const struct GNUNET_TESTBED_PeerCreateMessage *) message;
- host_id = ntohl (msg->host_id);
- peer_id = ntohl (msg->peer_id);
- if (UINT32_MAX == peer_id)
- {
- send_operation_fail_msg (client, GNUNET_ntohll (msg->operation_id),
- "Cannot create peer with given ID");
- GNUNET_SERVER_receive_done (client, GNUNET_OK);
- return;
- }
- if (host_id == master_context->host_id)
- {
- char *emsg;
-
- /* We are responsible for this peer */
- msize -= sizeof (struct GNUNET_TESTBED_PeerCreateMessage);
- config_size = ntohl (msg->config_size);
- config = GNUNET_malloc (config_size);
- dest_size = config_size;
- if (Z_OK !=
- (ret =
- uncompress ((Bytef *) config, (uLongf *) & dest_size,
- (const Bytef *) &msg[1], (uLong) msize)))
- {
- GNUNET_break (0); /* uncompression error */
- GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
- return;
- }
- if (config_size != dest_size)
- {
- GNUNET_break (0); /* Uncompressed config size mismatch */
- GNUNET_free (config);
- GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
- return;
- }
- cfg = GNUNET_CONFIGURATION_create ();
- if (GNUNET_OK !=
- GNUNET_CONFIGURATION_deserialize (cfg, config, config_size, GNUNET_NO))
- {
- GNUNET_break (0); /* Configuration parsing error */
- GNUNET_free (config);
- GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
- return;
- }
- GNUNET_free (config);
- peer = GNUNET_malloc (sizeof (struct Peer));
- peer->is_remote = GNUNET_NO;
- peer->details.local.cfg = cfg;
- peer->id = peer_id;
- LOG_DEBUG ("Creating peer with id: %u\n", peer->id);
- peer->details.local.peer =
- GNUNET_TESTING_peer_configure (master_context->system,
- peer->details.local.cfg, peer->id,
- NULL /* Peer id */ ,
- &emsg);
- if (NULL == peer->details.local.peer)
- {
- LOG (GNUNET_ERROR_TYPE_WARNING, "Configuring peer failed: %s\n", emsg);
- GNUNET_free (emsg);
- GNUNET_free (peer);
- GNUNET_break (0);
- GNUNET_SERVER_receive_done (client, GNUNET_SYSERR);
- return;
- }
- peer->details.local.is_running = GNUNET_NO;
- peer_list_add (peer);
- reply =
- GNUNET_malloc (sizeof
- (struct GNUNET_TESTBED_PeerCreateSuccessEventMessage));
- reply->header.size =
- htons (sizeof (struct GNUNET_TESTBED_PeerCreateSuccessEventMessage));
- reply->header.type = htons (GNUNET_MESSAGE_TYPE_TESTBED_PEERCREATESUCCESS);
- reply->peer_id = msg->peer_id;
- reply->operation_id = msg->operation_id;
- queue_message (client, &reply->header);
- GNUNET_SERVER_receive_done (client, GNUNET_OK);
- return;
- }
-
- /* Forward peer create request */
- route = find_dest_route (host_id);
- if (NULL == route)
- {
- GNUNET_break (0);
- GNUNET_SERVER_receive_done (client, GNUNET_OK);
- return;
- }
-
- peer = GNUNET_malloc (sizeof (struct Peer));
- peer->is_remote = GNUNET_YES;
- peer->id = peer_id;
- peer->details.remote.slave = slave_list[route->dest];
- peer->details.remote.remote_host_id = host_id;
- fo_ctxt = GNUNET_malloc (sizeof (struct ForwardedOperationContext));
- GNUNET_SERVER_client_keep (client);
- fo_ctxt->client = client;
- fo_ctxt->operation_id = GNUNET_ntohll (msg->operation_id);
- fo_ctxt->cls = peer; //slave_list[route->dest]->controller;
- fo_ctxt->type = OP_PEER_CREATE;
- fo_ctxt->opc =
- GNUNET_TESTBED_forward_operation_msg_ (slave_list [route->dest]->controller,
- fo_ctxt->operation_id,
- &msg->header,
- peer_create_success_cb, fo_ctxt);
- fo_ctxt->timeout_task =
- GNUNET_SCHEDULER_add_delayed (TIMEOUT, &peer_create_forward_timeout,
- fo_ctxt);
- GNUNET_CONTAINER_DLL_insert_tail (fopcq_head, fopcq_tail, fo_ctxt);
- GNUNET_SERVER_receive_done (client, GNUNET_OK);
-}
-
-
-/**
- * Message handler for GNUNET_MESSAGE_TYPE_TESTBED_DESTROYPEER messages
- *
- * @param cls NULL
- * @param client identification of the client
- * @param message the actual message
- */
-static void
-handle_peer_destroy (void *cls, struct GNUNET_SERVER_Client *client,
- const struct GNUNET_MessageHeader *message)
-{
- const struct GNUNET_TESTBED_PeerDestroyMessage *msg;
- struct ForwardedOperationContext *fopc;
- struct Peer *peer;
- uint32_t peer_id;
-
- msg = (const struct GNUNET_TESTBED_PeerDestroyMessage *) message;
- peer_id = ntohl (msg->peer_id);
- LOG_DEBUG ("Received peer destory on peer: %u and operation id: %ul\n",
- peer_id, GNUNET_ntohll (msg->operation_id));
- if ((peer_list_size <= peer_id) || (NULL == peer_list[peer_id]))
- {
- LOG (GNUNET_ERROR_TYPE_ERROR,
- "Asked to destroy a non existent peer with id: %u\n", peer_id);
- send_operation_fail_msg (client, GNUNET_ntohll (msg->operation_id),
- "Peer doesn't exist");
- GNUNET_SERVER_receive_done (client, GNUNET_OK);
- return;
- }
- peer = peer_list[peer_id];
- if (GNUNET_YES == peer->is_remote)
- {
- /* Forward the destory message to sub controller */
- fopc = GNUNET_malloc (sizeof (struct ForwardedOperationContext));
- GNUNET_SERVER_client_keep (client);
- fopc->client = client;
- fopc->cls = peer;
- fopc->type = OP_PEER_DESTROY;
- fopc->operation_id = GNUNET_ntohll (msg->operation_id);
- fopc->opc =
- GNUNET_TESTBED_forward_operation_msg_ (peer->details.remote.slave->controller,
- fopc->operation_id, &msg->header,
- &peer_destroy_success_cb,
- fopc);
- fopc->timeout_task =
- GNUNET_SCHEDULER_add_delayed (TIMEOUT, &forwarded_operation_timeout,
- fopc);
- GNUNET_CONTAINER_DLL_insert_tail (fopcq_head, fopcq_tail, fopc);
- GNUNET_SERVER_receive_done (client, GNUNET_OK);
- return;
- }
- peer->destroy_flag = GNUNET_YES;
- if (0 == peer->reference_cnt)
- destroy_peer (peer);
- else
- LOG (GNUNET_ERROR_TYPE_WARNING,
- "Delaying peer destroy as peer is currently in use\n");
- send_operation_success_msg (client, GNUNET_ntohll (msg->operation_id));
- GNUNET_SERVER_receive_done (client, GNUNET_OK);
-}
-
-
-/**
- * Message handler for GNUNET_MESSAGE_TYPE_TESTBED_DESTROYPEER messages
- *
- * @param cls NULL
- * @param client identification of the client
- * @param message the actual message
- */
-static void
-handle_peer_start (void *cls, struct GNUNET_SERVER_Client *client,
- const struct GNUNET_MessageHeader *message)
-{
- const struct GNUNET_TESTBED_PeerStartMessage *msg;
- struct GNUNET_TESTBED_PeerEventMessage *reply;
- struct ForwardedOperationContext *fopc;
- struct Peer *peer;
- uint32_t peer_id;
-
- msg = (const struct GNUNET_TESTBED_PeerStartMessage *) message;
- peer_id = ntohl (msg->peer_id);
- if ((peer_id >= peer_list_size) || (NULL == peer_list[peer_id]))
- {
- GNUNET_break (0);
- LOG (GNUNET_ERROR_TYPE_ERROR,
- "Asked to start a non existent peer with id: %u\n", peer_id);
- GNUNET_SERVER_receive_done (client, GNUNET_OK);
- return;
- }
- peer = peer_list[peer_id];
- if (GNUNET_YES == peer->is_remote)
- {
- fopc = GNUNET_malloc (sizeof (struct ForwardedOperationContext));
- GNUNET_SERVER_client_keep (client);
- fopc->client = client;
- fopc->operation_id = GNUNET_ntohll (msg->operation_id);
- fopc->type = OP_PEER_START;
- fopc->opc =
- GNUNET_TESTBED_forward_operation_msg_ (peer->details.remote.slave->controller,
- fopc->operation_id, &msg->header,
- &forwarded_operation_reply_relay,
- fopc);
- fopc->timeout_task =
- GNUNET_SCHEDULER_add_delayed (TIMEOUT, &forwarded_operation_timeout,
- fopc);
- GNUNET_CONTAINER_DLL_insert_tail (fopcq_head, fopcq_tail, fopc);
- GNUNET_SERVER_receive_done (client, GNUNET_OK);
- return;
- }
- if (GNUNET_OK != GNUNET_TESTING_peer_start (peer->details.local.peer))
- {
- send_operation_fail_msg (client, GNUNET_ntohll (msg->operation_id),
- "Failed to start");
- GNUNET_SERVER_receive_done (client, GNUNET_OK);
- return;
- }
- peer->details.local.is_running = GNUNET_YES;
- reply = GNUNET_malloc (sizeof (struct GNUNET_TESTBED_PeerEventMessage));
- reply->header.type = htons (GNUNET_MESSAGE_TYPE_TESTBED_PEEREVENT);
- reply->header.size = htons (sizeof (struct GNUNET_TESTBED_PeerEventMessage));
- reply->event_type = htonl (GNUNET_TESTBED_ET_PEER_START);
- reply->host_id = htonl (master_context->host_id);
- reply->peer_id = msg->peer_id;
- reply->operation_id = msg->operation_id;
- queue_message (client, &reply->header);
- GNUNET_SERVER_receive_done (client, GNUNET_OK);
-}
-
-
-/**
- * Message handler for GNUNET_MESSAGE_TYPE_TESTBED_DESTROYPEER messages
- *
- * @param cls NULL
- * @param client identification of the client
- * @param message the actual message
- */
-static void
-handle_peer_stop (void *cls, struct GNUNET_SERVER_Client *client,
- const struct GNUNET_MessageHeader *message)
-{
- const struct GNUNET_TESTBED_PeerStopMessage *msg;
- struct GNUNET_TESTBED_PeerEventMessage *reply;
- struct ForwardedOperationContext *fopc;
- struct Peer *peer;
- uint32_t peer_id;
-
- msg = (const struct GNUNET_TESTBED_PeerStopMessage *) message;
- peer_id = ntohl (msg->peer_id);
- if ((peer_id >= peer_list_size) || (NULL == peer_list[peer_id]))
- {
- send_operation_fail_msg (client, GNUNET_ntohll (msg->operation_id),
- "Peer not found");
- GNUNET_SERVER_receive_done (client, GNUNET_OK);
- return;
- }
- peer = peer_list[peer_id];
- if (GNUNET_YES == peer->is_remote)
- {
- fopc = GNUNET_malloc (sizeof (struct ForwardedOperationContext));
- GNUNET_SERVER_client_keep (client);
- fopc->client = client;
- fopc->operation_id = GNUNET_ntohll (msg->operation_id);
- fopc->type = OP_PEER_STOP;
- fopc->opc =
- GNUNET_TESTBED_forward_operation_msg_ (peer->details.remote.slave->controller,
- fopc->operation_id, &msg->header,
- &forwarded_operation_reply_relay,
- fopc);
- fopc->timeout_task =
- GNUNET_SCHEDULER_add_delayed (TIMEOUT, &forwarded_operation_timeout,
- fopc);
- GNUNET_CONTAINER_DLL_insert_tail (fopcq_head, fopcq_tail, fopc);
- GNUNET_SERVER_receive_done (client, GNUNET_OK);
- return;
- }
- if (GNUNET_OK != GNUNET_TESTING_peer_stop (peer->details.local.peer))
- {
- send_operation_fail_msg (client, GNUNET_ntohll (msg->operation_id),
- "Peer not running");
- GNUNET_SERVER_receive_done (client, GNUNET_OK);
- return;
- }
- peer->details.local.is_running = GNUNET_NO;
- reply = GNUNET_malloc (sizeof (struct GNUNET_TESTBED_PeerEventMessage));
- reply->header.type = htons (GNUNET_MESSAGE_TYPE_TESTBED_PEEREVENT);
- reply->header.size = htons (sizeof (struct GNUNET_TESTBED_PeerEventMessage));
- reply->event_type = htonl (GNUNET_TESTBED_ET_PEER_STOP);
- reply->host_id = htonl (master_context->host_id);
- reply->peer_id = msg->peer_id;
- reply->operation_id = msg->operation_id;
- queue_message (client, &reply->header);
- GNUNET_SERVER_receive_done (client, GNUNET_OK);
-}
projects / oweals / gnunet.git / blobdiff