GNUnet  0.19.3
gnunet-service-messenger_room.c File Reference

GNUnet MESSENGER service. More...

Include dependency graph for gnunet-service-messenger_room.c:

Go to the source code of this file.

Data Structures

struct  GNUNET_MESSENGER_MemberNotify
 
struct  GNUNET_MESSENGER_ClosureSendRoom
 
struct  GNUNET_MESSENGER_MemberSessionCompletion
 
struct  GNUNET_MESSENGER_MemberUpdate
 

Functions

static void idle_request_room_messages (void *cls)
 
struct GNUNET_MESSENGER_SrvRoomcreate_srv_room (struct GNUNET_MESSENGER_SrvHandle *handle, const struct GNUNET_HashCode *key)
 Creates and allocates a new room for a handle with a given key. More...
 
static int iterate_destroy_tunnels (void *cls, const struct GNUNET_PeerIdentity *key, void *value)
 
static void handle_room_messages (struct GNUNET_MESSENGER_SrvRoom *room)
 
void destroy_srv_room (struct GNUNET_MESSENGER_SrvRoom *room, int deletion)
 Destroys a room and frees its memory fully. More...
 
struct GNUNET_MESSENGER_MemberStoreget_srv_room_member_store (struct GNUNET_MESSENGER_SrvRoom *room)
 Returns the used member store of a given room. More...
 
struct GNUNET_MESSENGER_MessageStoreget_srv_room_message_store (struct GNUNET_MESSENGER_SrvRoom *room)
 Returns the used message store of a given room. More...
 
struct GNUNET_MESSENGER_OperationStoreget_srv_room_operation_store (struct GNUNET_MESSENGER_SrvRoom *room)
 Returns the used operation store of a given room. More...
 
static int send_room_info (struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvHandle *handle, struct GNUNET_MESSENGER_SrvTunnel *tunnel)
 
static void * callback_room_connect (void *cls, struct GNUNET_CADET_Channel *channel, const struct GNUNET_PeerIdentity *source)
 
static int join_room (struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvHandle *handle, struct GNUNET_MESSENGER_Member *member)
 
static void notify_about_members (struct GNUNET_MESSENGER_MemberNotify *notify, struct GNUNET_MESSENGER_MemberSession *session, struct GNUNET_CONTAINER_MultiHashMap *map, int check_permission)
 
static int iterate_notify_about_members (void *cls, const struct GNUNET_IDENTITY_PublicKey *public_key, struct GNUNET_MESSENGER_MemberSession *session)
 
static int join_room_locally (struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvHandle *handle)
 
int check_tunnel_message (void *cls, const struct GNUNET_MessageHeader *header)
 
void handle_tunnel_message (void *cls, const struct GNUNET_MessageHeader *header)
 
void callback_tunnel_disconnect (void *cls, const struct GNUNET_CADET_Channel *channel)
 
int open_srv_room (struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvHandle *handle)
 Tries to open a room for a given handle. More...
 
int enter_srv_room_at (struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvHandle *handle, const struct GNUNET_PeerIdentity *door)
 Connects a tunnel to a hosting peer of a room through a so called door which is represented by a peer identity of a hosting peer. More...
 
struct GNUNET_MQ_Envelopepack_srv_room_message (const struct GNUNET_MESSENGER_SrvRoom *room, const struct GNUNET_MESSENGER_SrvHandle *handle, struct GNUNET_MESSENGER_Message *message, struct GNUNET_HashCode *hash, int mode)
 Packs a message depending on the selected mode into a newly allocated envelope. More...
 
static int iterate_send_room_message (void *cls, const struct GNUNET_PeerIdentity *key, void *value)
 
int update_room_message (struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash)
 
void callback_room_handle_message (struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvHandle *handle, const struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash)
 
int send_srv_room_message (struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvHandle *handle, struct GNUNET_MESSENGER_Message *message)
 Sends a message from a given handle into a room. More...
 
void forward_srv_room_message (struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvTunnel *tunnel, struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash)
 Forwards a message with a given hash to a specific tunnel inside of a room. More...
 
void check_srv_room_peer_status (struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvTunnel *tunnel)
 Checks the current state of opening a given room from this peer and re-publishes it if necessary to a selected tunnel or to all connected tunnels if necessary or if the selected tunnel is NULL. More...
 
void merge_srv_room_last_messages (struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvHandle *handle)
 Reduces all current forks inside of the message history of a room to one remaining last message by merging them down. More...
 
void callback_room_deletion (struct GNUNET_MESSENGER_SrvRoom *room, const struct GNUNET_HashCode *hash)
 
void callback_room_merge (struct GNUNET_MESSENGER_SrvRoom *room, const struct GNUNET_HashCode *hash)
 
int delete_srv_room_message (struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_MemberSession *session, const struct GNUNET_HashCode *hash, const struct GNUNET_TIME_Relative delay)
 Deletes a message from the room with a given hash in a specific delay if the provided member by its session is permitted to do so. More...
 
struct GNUNET_CADET_Handleget_srv_room_cadet (struct GNUNET_MESSENGER_SrvRoom *room)
 Returns the CADET handle from a rooms service. More...
 
const struct GNUNET_HashCodeget_srv_room_key (const struct GNUNET_MESSENGER_SrvRoom *room)
 Returns the shared secret you need to access a room. More...
 
const struct GNUNET_MESSENGER_SrvTunnelget_srv_room_tunnel (const struct GNUNET_MESSENGER_SrvRoom *room, const struct GNUNET_PeerIdentity *peer)
 Returns a tunnel inside of a room leading towards a given peer if such a tunnel exists, otherwise NULL. More...
 
static int request_room_message_step (struct GNUNET_MESSENGER_SrvRoom *room, const struct GNUNET_HashCode *hash, const struct GNUNET_MESSENGER_MemberSession *session, GNUNET_MESSENGER_MessageRequestCallback callback, void *cls)
 
int request_srv_room_message (struct GNUNET_MESSENGER_SrvRoom *room, const struct GNUNET_HashCode *hash, const struct GNUNET_MESSENGER_MemberSession *session, GNUNET_MESSENGER_MessageRequestCallback callback, void *cls)
 Requests a message from a room identified by a given hash. More...
 
void callback_room_disconnect (struct GNUNET_MESSENGER_SrvRoom *room, void *cls)
 
int callback_verify_room_message (struct GNUNET_MESSENGER_SrvRoom *room, void *cls, struct GNUNET_MESSENGER_Message *message, struct GNUNET_HashCode *hash)
 
void solve_srv_room_member_collisions (struct GNUNET_MESSENGER_SrvRoom *room, const struct GNUNET_IDENTITY_PublicKey *public_key, const struct GNUNET_ShortHashCode *member_id, struct GNUNET_TIME_Absolute timestamp)
 Checks for potential collisions with member ids and solves them changing active handles ids if they use an already used member id (comparing public key and timestamp). More...
 
void rebuild_srv_room_basement_structure (struct GNUNET_MESSENGER_SrvRoom *room)
 Rebuilds the decentralized structure for a room by ensuring all required connections are made depending on the amount of peers and this peers index in the list of them. More...
 
static int iterate_update_member_sessions (void *cls, const struct GNUNET_IDENTITY_PublicKey *public_key, struct GNUNET_MESSENGER_MemberSession *session)
 
static void remove_room_member_session (struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_MemberSession *session)
 
static void get_room_data_subdir (struct GNUNET_MESSENGER_SrvRoom *room, char **dir)
 
void load_srv_room (struct GNUNET_MESSENGER_SrvRoom *room)
 Loads the local configuration for a given room of a service which contains the last messages hash and the ruleset for general access of new members. More...
 
void save_srv_room (struct GNUNET_MESSENGER_SrvRoom *room)
 Saves the configuration for a given room of a service which contains the last messages hash and the ruleset for general access of new members locally. More...
 
void remove_srv_room (struct GNUNET_MESSENGER_SrvRoom *room)
 Removes the configuration for a given room of a service. More...
 

Detailed Description

GNUnet MESSENGER service.

Author
Tobias Frisch

Definition in file gnunet-service-messenger_room.c.

Function Documentation

◆ idle_request_room_messages()

static void idle_request_room_messages ( void *  cls)
static

Definition at line 847 of file gnunet-service-messenger_room.c.

848 {
849  struct GNUNET_MESSENGER_SrvRoom *room = cls;
850 
851  room->idle = NULL;
852 
854  const struct GNUNET_HashCode *hash = get_message_state_merge_hash(&(room->state));
855 
856  if ((hash) &&
857  (GNUNET_MESSENGER_OP_UNKNOWN == get_store_operation_type(operation_store, hash)))
859  operation_store,
860  hash,
863  );
864 
869  cls
870  );
871 }
const struct GNUNET_HashCode * get_message_state_merge_hash(const struct GNUNET_MESSENGER_MessageState *state)
enum GNUNET_MESSENGER_OperationType get_store_operation_type(const struct GNUNET_MESSENGER_OperationStore *store, const struct GNUNET_HashCode *hash)
Returns the type of the active operation under a given hash in a specific operation store.
int use_store_operation(struct GNUNET_MESSENGER_OperationStore *store, const struct GNUNET_HashCode *hash, enum GNUNET_MESSENGER_OperationType type, struct GNUNET_TIME_Relative delay)
Tries to use an operation under a given hash in a specific operation store.
struct GNUNET_MESSENGER_OperationStore * get_srv_room_operation_store(struct GNUNET_MESSENGER_SrvRoom *room)
Returns the used operation store of a given room.
static void idle_request_room_messages(void *cls)
#define GNUNET_MESSENGER_MERGE_DELAY
#define GNUNET_MESSENGER_IDLE_DELAY
@ GNUNET_SCHEDULER_PRIORITY_IDLE
Run when otherwise idle.
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_delayed_with_priority(struct GNUNET_TIME_Relative delay, enum GNUNET_SCHEDULER_Priority priority, GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run with a specified delay.
Definition: scheduler.c:1202
A 512-bit hashcode.
struct GNUNET_SCHEDULER_Task * idle
struct GNUNET_MESSENGER_MessageState state

References get_message_state_merge_hash(), get_srv_room_operation_store(), get_store_operation_type(), GNUNET_MESSENGER_IDLE_DELAY, GNUNET_MESSENGER_MERGE_DELAY, GNUNET_MESSENGER_OP_MERGE, GNUNET_MESSENGER_OP_UNKNOWN, GNUNET_SCHEDULER_add_delayed_with_priority(), GNUNET_SCHEDULER_PRIORITY_IDLE, GNUNET_MESSENGER_SrvRoom::idle, GNUNET_MESSENGER_OperationStore::room, GNUNET_MESSENGER_SrvRoom::state, and use_store_operation().

Referenced by create_srv_room().

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◆ create_srv_room()

struct GNUNET_MESSENGER_SrvRoom* create_srv_room ( struct GNUNET_MESSENGER_SrvHandle handle,
const struct GNUNET_HashCode key 
)

Creates and allocates a new room for a handle with a given key.

Parameters
[in,out]handleHandle
[in]keyKey of room
Returns
New room

Definition at line 47 of file gnunet-service-messenger_room.c.

49 {
50  GNUNET_assert((handle) && (key));
51 
53 
54  room->service = handle->service;
55  room->host = handle;
56  room->port = NULL;
57 
58  GNUNET_memcpy(&(room->key), key, sizeof(struct GNUNET_HashCode));
59 
61 
65 
66  init_list_tunnels (&(room->basement));
67  init_message_state(&(room->state));
68 
69  room->peer_message = NULL;
70 
71  init_list_messages (&(room->handling));
72  room->idle = NULL;
73 
74  if (room->service->dir)
75  load_srv_room (room);
76 
78 
79  return room;
80 }
struct GNUNET_HashCode key
The key used in the DHT.
static struct GNUNET_DNS_Handle * handle
Handle to transport service.
void init_list_messages(struct GNUNET_MESSENGER_ListMessages *messages)
Initializes list of message hashes as empty list.
void init_member_store(struct GNUNET_MESSENGER_MemberStore *store, struct GNUNET_MESSENGER_SrvRoom *room)
Initializes a member store as fully empty connected to a room.
void init_message_state(struct GNUNET_MESSENGER_MessageState *state)
void init_message_store(struct GNUNET_MESSENGER_MessageStore *store)
Initializes a message store as fully empty.
void init_operation_store(struct GNUNET_MESSENGER_OperationStore *store, struct GNUNET_MESSENGER_SrvRoom *room)
Initializes an operation store as fully empty with a given room.
struct GNUNET_MESSENGER_MemberStore * get_srv_room_member_store(struct GNUNET_MESSENGER_SrvRoom *room)
Returns the used member store of a given room.
struct GNUNET_MESSENGER_MessageStore * get_srv_room_message_store(struct GNUNET_MESSENGER_SrvRoom *room)
Returns the used message store of a given room.
void load_srv_room(struct GNUNET_MESSENGER_SrvRoom *room)
Loads the local configuration for a given room of a service which contains the last messages hash and...
struct GNUNET_CONTAINER_MultiPeerMap * GNUNET_CONTAINER_multipeermap_create(unsigned int len, int do_not_copy_keys)
Create a multi peer map (hash map for public keys of peers).
#define GNUNET_memcpy(dst, src, n)
Call memcpy() but check for n being 0 first.
@ GNUNET_NO
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
#define GNUNET_new(type)
Allocate a struct or union of the given type.
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_with_priority(enum GNUNET_SCHEDULER_Priority prio, GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run with a specified priority.
Definition: scheduler.c:1226
void init_list_tunnels(struct GNUNET_MESSENGER_ListTunnels *tunnels)
Initializes list of tunnels peer identities as empty list.
struct GNUNET_HashCode * peer_message
struct GNUNET_CONTAINER_MultiPeerMap * tunnels
struct GNUNET_MESSENGER_Service * service
struct GNUNET_CADET_Port * port
struct GNUNET_MESSENGER_ListTunnels basement
struct GNUNET_MESSENGER_ListMessages handling
struct GNUNET_MESSENGER_SrvHandle * host

References GNUNET_MESSENGER_SrvRoom::basement, GNUNET_MESSENGER_Service::dir, get_srv_room_member_store(), get_srv_room_message_store(), get_srv_room_operation_store(), GNUNET_assert, GNUNET_CONTAINER_multipeermap_create(), GNUNET_memcpy, GNUNET_new, GNUNET_NO, GNUNET_SCHEDULER_add_with_priority(), GNUNET_SCHEDULER_PRIORITY_IDLE, handle, GNUNET_MESSENGER_SrvRoom::handling, GNUNET_MESSENGER_SrvRoom::host, GNUNET_MESSENGER_SrvRoom::idle, idle_request_room_messages(), init_list_messages(), init_list_tunnels(), init_member_store(), init_message_state(), init_message_store(), init_operation_store(), key, GNUNET_MESSENGER_SrvRoom::key, load_srv_room(), GNUNET_MESSENGER_SrvRoom::peer_message, GNUNET_MESSENGER_SrvRoom::port, GNUNET_MESSENGER_SrvRoom::service, GNUNET_MESSENGER_SrvRoom::state, and GNUNET_MESSENGER_SrvRoom::tunnels.

Referenced by entry_service_room(), and open_service_room().

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◆ iterate_destroy_tunnels()

static int iterate_destroy_tunnels ( void *  cls,
const struct GNUNET_PeerIdentity key,
void *  value 
)
static

Definition at line 83 of file gnunet-service-messenger_room.c.

86 {
87  struct GNUNET_MESSENGER_SrvTunnel *tunnel = value;
88  destroy_tunnel (tunnel);
89  return GNUNET_YES;
90 }
static char * value
Value of the record to add/remove.
static void destroy_tunnel(void *cls)
This tunnel is no longer used, destroy it.
@ GNUNET_YES

References destroy_tunnel(), GNUNET_YES, and value.

Referenced by destroy_srv_room().

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◆ handle_room_messages()

static void handle_room_messages ( struct GNUNET_MESSENGER_SrvRoom room)
static

Definition at line 963 of file gnunet-service-messenger_room.c.

964 {
965  struct GNUNET_MESSENGER_MessageStore *message_store = get_srv_room_message_store(room);
967 
968  while (room->handling.head)
969  {
970  struct GNUNET_MESSENGER_ListMessage *element = room->handling.head;
971 
972  const struct GNUNET_MESSENGER_Message *message = get_store_message (message_store, &(element->hash));
973 
974  if (!message)
975  goto finish_handling;
976 
977  struct GNUNET_MESSENGER_Member *member = get_store_member_of(member_store, message);
978 
979  if (!member)
980  goto finish_handling;
981 
982  struct GNUNET_MESSENGER_MemberSession *session = get_member_session_of(member, message, &(element->hash));
983 
984  if (session)
985  handle_service_message (room->service, room, session, message, &(element->hash));
986 
987 finish_handling:
988  GNUNET_CONTAINER_DLL_remove(room->handling.head, room->handling.tail, element);
989  GNUNET_free(element);
990  }
991 }
struct GNUNET_MESSENGER_MemberSession * get_member_session_of(struct GNUNET_MESSENGER_Member *member, const struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash)
Returns the member session of a member using a public key which can verify the signature of a given m...
struct GNUNET_MESSENGER_Member * get_store_member_of(struct GNUNET_MESSENGER_MemberStore *store, const struct GNUNET_MESSENGER_Message *message)
Returns the member of a store using a sender id of a given message.
const struct GNUNET_MESSENGER_Message * get_store_message(struct GNUNET_MESSENGER_MessageStore *store, const struct GNUNET_HashCode *hash)
Returns the message from a message store matching a given hash.
void handle_service_message(struct GNUNET_MESSENGER_Service *service, struct GNUNET_MESSENGER_SrvRoom *room, const struct GNUNET_MESSENGER_MemberSession *session, const struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash)
Sends a received or sent message with a given hash to each handle of a service which is currently mem...
#define GNUNET_CONTAINER_DLL_remove(head, tail, element)
Remove an element from a DLL.
#define GNUNET_free(ptr)
Wrapper around free.
struct GNUNET_MESSENGER_ListMessage * head
struct GNUNET_MESSENGER_ListMessage * tail

References get_member_session_of(), get_srv_room_member_store(), get_srv_room_message_store(), get_store_member_of(), get_store_message(), GNUNET_CONTAINER_DLL_remove, GNUNET_free, handle_service_message(), GNUNET_MESSENGER_SrvRoom::handling, GNUNET_MESSENGER_ListMessage::hash, GNUNET_MESSENGER_ListMessages::head, GNUNET_MESSENGER_MemberSession::member, GNUNET_MESSENGER_MemberStore::room, GNUNET_MESSENGER_SrvRoom::service, and GNUNET_MESSENGER_ListMessages::tail.

Referenced by callback_room_handle_message(), and destroy_srv_room().

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◆ destroy_srv_room()

void destroy_srv_room ( struct GNUNET_MESSENGER_SrvRoom room,
int  deletion 
)

Destroys a room and frees its memory fully.

The deletion flag should only be set to GNUNET_YES if the room gets dropped by the service, otherwise GNUNET_NO.

Parameters
[in,out]roomRoom
[in]deletionFlag to indicate context of destruction

Definition at line 96 of file gnunet-service-messenger_room.c.

98 {
99  GNUNET_assert(room);
100 
101  if (room->idle)
102  {
104  room->idle = NULL;
105  }
106 
107  if (room->port)
109 
111  handle_room_messages (room);
112 
113  if (!(room->service->dir))
114  goto skip_saving;
115 
116  if (GNUNET_YES == deletion)
117  remove_srv_room (room);
118  else
119  save_srv_room (room);
120 
121 skip_saving:
125 
127  clear_list_tunnels (&(room->basement));
128  clear_message_state(&(room->state));
129 
130  if (room->peer_message)
131  GNUNET_free(room->peer_message);
132 
133  GNUNET_free(room);
134 }
void clear_member_store(struct GNUNET_MESSENGER_MemberStore *store)
Clears a member store, wipes its content and deallocates its memory.
void clear_message_state(struct GNUNET_MESSENGER_MessageState *state)
void clear_message_store(struct GNUNET_MESSENGER_MessageStore *store)
Clears a message store, wipes its content and deallocates its memory.
void clear_operation_store(struct GNUNET_MESSENGER_OperationStore *store)
Clears an operation store, stops all operations and deallocates its memory.
void save_srv_room(struct GNUNET_MESSENGER_SrvRoom *room)
Saves the configuration for a given room of a service which contains the last messages hash and the r...
void remove_srv_room(struct GNUNET_MESSENGER_SrvRoom *room)
Removes the configuration for a given room of a service.
static int iterate_destroy_tunnels(void *cls, const struct GNUNET_PeerIdentity *key, void *value)
static void handle_room_messages(struct GNUNET_MESSENGER_SrvRoom *room)
void GNUNET_CADET_close_port(struct GNUNET_CADET_Port *p)
Close a port opened with GNUNET_CADET_open_port.
Definition: cadet_api.c:801
void GNUNET_CONTAINER_multipeermap_destroy(struct GNUNET_CONTAINER_MultiPeerMap *map)
Destroy a hash map.
int GNUNET_CONTAINER_multipeermap_iterate(struct GNUNET_CONTAINER_MultiPeerMap *map, GNUNET_CONTAINER_PeerMapIterator it, void *it_cls)
Iterate over all entries in the map.
void * GNUNET_SCHEDULER_cancel(struct GNUNET_SCHEDULER_Task *task)
Cancel the task with the specified identifier.
Definition: scheduler.c:975
void clear_list_tunnels(struct GNUNET_MESSENGER_ListTunnels *tunnels)
Clears the list of tunnels peer identities.

References GNUNET_MESSENGER_SrvRoom::basement, clear_list_tunnels(), clear_member_store(), clear_message_state(), clear_message_store(), clear_operation_store(), GNUNET_MESSENGER_Service::dir, get_srv_room_member_store(), get_srv_room_message_store(), get_srv_room_operation_store(), GNUNET_assert, GNUNET_CADET_close_port(), GNUNET_CONTAINER_multipeermap_destroy(), GNUNET_CONTAINER_multipeermap_iterate(), GNUNET_free, GNUNET_SCHEDULER_cancel(), GNUNET_YES, handle_room_messages(), GNUNET_MESSENGER_SrvRoom::idle, iterate_destroy_tunnels(), GNUNET_MESSENGER_SrvRoom::peer_message, GNUNET_MESSENGER_SrvRoom::port, remove_srv_room(), GNUNET_MESSENGER_SrvTunnel::room, save_srv_room(), GNUNET_MESSENGER_SrvRoom::service, GNUNET_MESSENGER_SrvRoom::state, and GNUNET_MESSENGER_SrvRoom::tunnels.

Referenced by close_service_room(), entry_service_room(), iterate_destroy_rooms(), and open_service_room().

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◆ get_srv_room_member_store()

struct GNUNET_MESSENGER_MemberStore* get_srv_room_member_store ( struct GNUNET_MESSENGER_SrvRoom room)

Returns the used member store of a given room.

Parameters
[in,out]roomRoom
Returns
Member store

Definition at line 137 of file gnunet-service-messenger_room.c.

138 {
139  GNUNET_assert(room);
140 
141  return &(room->member_store);
142 }
struct GNUNET_MESSENGER_MemberStore member_store

References GNUNET_assert, GNUNET_MESSENGER_SrvRoom::member_store, and GNUNET_MESSENGER_MemberStore::room.

Referenced by callback_found_message(), callback_room_handle_message(), check_srv_room_peer_status(), create_srv_room(), destroy_srv_room(), get_handle_member_session(), handle_get_message(), handle_room_messages(), join_room_locally(), load_srv_room(), open_srv_room(), recv_message_info(), recv_message_request(), save_srv_room(), and solve_srv_room_member_collisions().

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◆ get_srv_room_message_store()

struct GNUNET_MESSENGER_MessageStore* get_srv_room_message_store ( struct GNUNET_MESSENGER_SrvRoom room)

Returns the used message store of a given room.

Parameters
[in,out]roomRoom
Returns
Message store

Definition at line 145 of file gnunet-service-messenger_room.c.

146 {
147  GNUNET_assert(room);
148 
149  return &(room->message_store);
150 }
struct GNUNET_MESSENGER_MessageStore message_store

References GNUNET_assert, and GNUNET_MESSENGER_SrvRoom::message_store.

Referenced by callback_room_deletion(), callback_verify_room_message(), check_member_session_completion(), check_srv_room_peer_status(), create_srv_room(), delete_srv_room_message(), destroy_srv_room(), forward_about_members(), handle_room_messages(), load_srv_room(), notify_about_members(), request_room_message_step(), save_srv_room(), update_room_message(), and update_tunnel_last_message().

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◆ get_srv_room_operation_store()

struct GNUNET_MESSENGER_OperationStore* get_srv_room_operation_store ( struct GNUNET_MESSENGER_SrvRoom room)

Returns the used operation store of a given room.

Parameters
[in,out]roomRoom
Returns
Operation store

Definition at line 153 of file gnunet-service-messenger_room.c.

154 {
155  GNUNET_assert(room);
156 
157  return &(room->operation_store);
158 }
struct GNUNET_MESSENGER_OperationStore operation_store

References GNUNET_assert, GNUNET_MESSENGER_SrvRoom::operation_store, and GNUNET_MESSENGER_OperationStore::room.

Referenced by callback_found_message(), create_srv_room(), delete_srv_room_message(), destroy_srv_room(), idle_request_room_messages(), load_srv_room(), save_srv_room(), send_message_request(), update_room_message(), and update_tunnel_last_message().

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◆ send_room_info()

static int send_room_info ( struct GNUNET_MESSENGER_SrvRoom room,
struct GNUNET_MESSENGER_SrvHandle handle,
struct GNUNET_MESSENGER_SrvTunnel tunnel 
)
static

Definition at line 161 of file gnunet-service-messenger_room.c.

164 {
165  if ((!handle) || (!is_tunnel_connected (tunnel)))
166  return GNUNET_NO;
167 
169 }
const struct GNUNET_MESSENGER_Ego * get_srv_handle_ego(const struct GNUNET_MESSENGER_SrvHandle *handle)
Returns the EGO used by a given handle.
struct GNUNET_MESSENGER_Message * create_message_info(const struct GNUNET_MESSENGER_Ego *ego)
Creates and allocates a new info message containing the hosts EGO public key and a newly generated un...
int send_tunnel_message(struct GNUNET_MESSENGER_SrvTunnel *tunnel, void *handle, struct GNUNET_MESSENGER_Message *message)
Sends a message by packing it automatically into an envelope and passing it through the tunnel.
int is_tunnel_connected(const struct GNUNET_MESSENGER_SrvTunnel *tunnel)
Returns the status of a currently bound channel of a tunnel.

References create_message_info(), get_srv_handle_ego(), GNUNET_NO, handle, is_tunnel_connected(), and send_tunnel_message().

Referenced by callback_room_connect().

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◆ callback_room_connect()

static void* callback_room_connect ( void *  cls,
struct GNUNET_CADET_Channel channel,
const struct GNUNET_PeerIdentity source 
)
static

Definition at line 172 of file gnunet-service-messenger_room.c.

175 {
176  struct GNUNET_MESSENGER_SrvRoom *room = cls;
177 
179 
180  if ((tunnel) &&
183  {
184  destroy_tunnel (tunnel);
185  tunnel = NULL;
186  }
187 
188  if (!tunnel)
189  {
191  return NULL;
192  }
193 
194  bind_tunnel(tunnel, channel);
195 
196  GNUNET_log(GNUNET_ERROR_TYPE_INFO, "New tunnel in room (%s) established to peer: %s\n",
198 
199  if (GNUNET_YES == send_room_info (room, room->host, tunnel))
200  return tunnel;
201 
202  disconnect_tunnel (tunnel);
203 
205  destroy_tunnel (tunnel);
206 
207  return NULL;
208 }
static GstElement * source
Appsrc instance into which we write data for the pipeline.
static int send_room_info(struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvHandle *handle, struct GNUNET_MESSENGER_SrvTunnel *tunnel)
const struct GNUNET_HashCode * get_srv_room_key(const struct GNUNET_MESSENGER_SrvRoom *room)
Returns the shared secret you need to access a room.
struct GNUNET_MESSENGER_SrvTunnel * create_tunnel(struct GNUNET_MESSENGER_SrvRoom *room, const struct GNUNET_PeerIdentity *door)
Creates and allocates a tunnel of a room to a specific peer identity (called door).
void bind_tunnel(struct GNUNET_MESSENGER_SrvTunnel *tunnel, struct GNUNET_CADET_Channel *channel)
Binds a CADET channel to a tunnel and replaces its channel the tunnel is currently bound to if necess...
void disconnect_tunnel(struct GNUNET_MESSENGER_SrvTunnel *tunnel)
Disconnects and unbinds a channel from a tunnel.
int GNUNET_CONTAINER_multipeermap_put(struct GNUNET_CONTAINER_MultiPeerMap *map, const struct GNUNET_PeerIdentity *key, void *value, enum GNUNET_CONTAINER_MultiHashMapOption opt)
Store a key-value pair in the map.
enum GNUNET_GenericReturnValue GNUNET_CONTAINER_multipeermap_remove(struct GNUNET_CONTAINER_MultiPeerMap *map, const struct GNUNET_PeerIdentity *key, const void *value)
Remove the given key-value pair from the map.
@ GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE
Allow multiple values with the same key.
#define GNUNET_log(kind,...)
@ GNUNET_OK
const char * GNUNET_i2s(const struct GNUNET_PeerIdentity *pid)
Convert a peer identity to a string (for printing debug messages).
const char * GNUNET_h2s(const struct GNUNET_HashCode *hc)
Convert a hash value to a string (for printing debug messages).
@ GNUNET_ERROR_TYPE_INFO
void delayed_disconnect_channel(struct GNUNET_CADET_Channel *channel)
Starts an urgent task to close a CADET channel asynchronously.
struct GNUNET_CADET_Channel * channel
struct GNUNET_MESSENGER_SrvRoom * room

References bind_tunnel(), GNUNET_MESSENGER_SrvTunnel::channel, create_tunnel(), delayed_disconnect_channel(), destroy_tunnel(), disconnect_tunnel(), get_srv_room_key(), GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE, GNUNET_CONTAINER_multipeermap_put(), GNUNET_CONTAINER_multipeermap_remove(), GNUNET_ERROR_TYPE_INFO, GNUNET_h2s(), GNUNET_i2s(), GNUNET_log, GNUNET_OK, GNUNET_YES, GNUNET_MESSENGER_SrvRoom::host, GNUNET_MESSENGER_SrvTunnel::room, send_room_info(), source, and GNUNET_MESSENGER_SrvRoom::tunnels.

Referenced by open_srv_room().

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◆ join_room()

static int join_room ( struct GNUNET_MESSENGER_SrvRoom room,
struct GNUNET_MESSENGER_SrvHandle handle,
struct GNUNET_MESSENGER_Member member 
)
static

Definition at line 211 of file gnunet-service-messenger_room.c.

214 {
215  GNUNET_assert((room) && (handle) && (member));
216 
217  GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Joining room: %s (%s)\n", GNUNET_h2s (get_srv_room_key (room)),
218  GNUNET_sh2s (get_member_id(member)));
219 
220  const struct GNUNET_ShortHashCode *member_id = get_member_id(member);
221 
223  return GNUNET_NO;
224 
226 
227  if (!message)
228  {
229  GNUNET_log(GNUNET_ERROR_TYPE_ERROR, "Your join message could not be created!\n");
230 
231  return GNUNET_NO;
232  }
233 
234  GNUNET_memcpy(&(message->header.sender_id), member_id, sizeof(*member_id));
235  return send_srv_room_message (room, handle, message);
236 }
int change_srv_handle_member_id(struct GNUNET_MESSENGER_SrvHandle *handle, const struct GNUNET_HashCode *key, const struct GNUNET_ShortHashCode *unique_id)
Changes the member id of a given handle in a specific room to match a unique_id and returns GNUNET_OK...
const struct GNUNET_ShortHashCode * get_member_id(const struct GNUNET_MESSENGER_Member *member)
Returns the current id of a given member.
struct GNUNET_MESSENGER_Message * create_message_join(const struct GNUNET_MESSENGER_Ego *ego)
Creates and allocates a new join message containing the clients EGO public key.
int send_srv_room_message(struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvHandle *handle, struct GNUNET_MESSENGER_Message *message)
Sends a message from a given handle into a room.
const char * GNUNET_sh2s(const struct GNUNET_ShortHashCode *shc)
Convert a short hash value to a string (for printing debug messages).
@ GNUNET_ERROR_TYPE_ERROR
@ GNUNET_ERROR_TYPE_DEBUG
struct GNUNET_ShortHashCode sender_id
The senders id inside of the room the message was sent in.
struct GNUNET_MESSENGER_MessageHeader header
Header.
A 256-bit hashcode.

References change_srv_handle_member_id(), create_message_join(), get_member_id(), get_srv_handle_ego(), get_srv_room_key(), GNUNET_assert, GNUNET_ERROR_TYPE_DEBUG, GNUNET_ERROR_TYPE_ERROR, GNUNET_h2s(), GNUNET_log, GNUNET_memcpy, GNUNET_NO, GNUNET_OK, GNUNET_sh2s(), handle, GNUNET_MESSENGER_Message::header, GNUNET_MESSENGER_SrvTunnel::room, send_srv_room_message(), and GNUNET_MESSENGER_MessageHeader::sender_id.

Referenced by join_room_locally(), and open_srv_room().

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◆ notify_about_members()

static void notify_about_members ( struct GNUNET_MESSENGER_MemberNotify notify,
struct GNUNET_MESSENGER_MemberSession session,
struct GNUNET_CONTAINER_MultiHashMap map,
int  check_permission 
)
static

Definition at line 246 of file gnunet-service-messenger_room.c.

250 {
251  if (session->prev)
253 
254  struct GNUNET_MESSENGER_MessageStore *message_store = get_srv_room_message_store(notify->room);
255  struct GNUNET_MESSENGER_ListMessage *element;
256 
257  for (element = session->messages.head; element; element = element->next)
258  {
260  continue;
261 
262  if ((GNUNET_YES == check_permission) &&
263  (GNUNET_YES != check_member_session_history(notify->session, &(element->hash), GNUNET_NO)))
264  continue;
265 
266  if (GNUNET_OK != GNUNET_CONTAINER_multihashmap_put(map, &(element->hash), NULL,
268  GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "Notification of session message could be duplicated!\n");
269 
270  const struct GNUNET_MESSENGER_Message *message = get_store_message(message_store, &(element->hash));
271 
272  if (message)
273  notify_srv_handle_message (notify->handle, notify->room, session, message, &(element->hash));
274  }
275 }
static struct GNUNET_PEERINFO_NotifyContext * notify
Handle to the peerinfo notify service (NULL until we've connected to it).
static struct GNUNET_CONTAINER_MultiPeerMap * map
Handle to the map used to store old latency values for peers.
void notify_srv_handle_message(struct GNUNET_MESSENGER_SrvHandle *handle, struct GNUNET_MESSENGER_SrvRoom *room, const struct GNUNET_MESSENGER_MemberSession *session, const struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash)
Notifies the handle that a new message was received or sent.
int check_member_session_history(const struct GNUNET_MESSENGER_MemberSession *session, const struct GNUNET_HashCode *hash, int ownership)
Checks the history of a session for a specific message which is identified by its hash and if the own...
static void notify_about_members(struct GNUNET_MESSENGER_MemberNotify *notify, struct GNUNET_MESSENGER_MemberSession *session, struct GNUNET_CONTAINER_MultiHashMap *map, int check_permission)
enum GNUNET_GenericReturnValue GNUNET_CONTAINER_multihashmap_contains(const struct GNUNET_CONTAINER_MultiHashMap *map, const struct GNUNET_HashCode *key)
Check if the map contains any value under the given key (including values that are NULL).
enum GNUNET_GenericReturnValue GNUNET_CONTAINER_multihashmap_put(struct GNUNET_CONTAINER_MultiHashMap *map, const struct GNUNET_HashCode *key, void *value, enum GNUNET_CONTAINER_MultiHashMapOption opt)
Store a key-value pair in the map.
@ GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST
, ' bother checking if a value already exists (faster than GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE...
@ GNUNET_ERROR_TYPE_WARNING
struct GNUNET_MESSENGER_ListMessage * next
struct GNUNET_MESSENGER_MemberSession * prev
struct GNUNET_MESSENGER_ListMessages messages

References check_member_session_history(), get_srv_room_message_store(), get_store_message(), GNUNET_CONTAINER_multihashmap_contains(), GNUNET_CONTAINER_multihashmap_put(), GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST, GNUNET_ERROR_TYPE_WARNING, GNUNET_log, GNUNET_NO, GNUNET_OK, GNUNET_YES, GNUNET_MESSENGER_ListMessage::hash, GNUNET_MESSENGER_ListMessages::head, map, GNUNET_MESSENGER_MemberSession::messages, GNUNET_MESSENGER_ListMessage::next, notify, notify_srv_handle_message(), and GNUNET_MESSENGER_MemberSession::prev.

Referenced by iterate_notify_about_members().

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◆ iterate_notify_about_members()

static int iterate_notify_about_members ( void *  cls,
const struct GNUNET_IDENTITY_PublicKey public_key,
struct GNUNET_MESSENGER_MemberSession session 
)
static

Definition at line 278 of file gnunet-service-messenger_room.c.

281 {
283 
284  if ((notify->session == session) || (GNUNET_YES == is_member_session_completed(session)))
285  return GNUNET_YES;
286 
288 
290 
292  return GNUNET_YES;
293 }
int is_member_session_completed(const struct GNUNET_MESSENGER_MemberSession *session)
Returns if the given member session has been completed.
struct GNUNET_CONTAINER_MultiHashMap * GNUNET_CONTAINER_multihashmap_create(unsigned int len, int do_not_copy_keys)
Create a multi hash map.
void GNUNET_CONTAINER_multihashmap_destroy(struct GNUNET_CONTAINER_MultiHashMap *map)
Destroy a hash map.
Internal representation of the hash map.
struct GNUNET_MESSENGER_MemberSession * session

References GNUNET_CONTAINER_multihashmap_create(), GNUNET_CONTAINER_multihashmap_destroy(), GNUNET_NO, GNUNET_YES, is_member_session_completed(), map, notify, notify_about_members(), and GNUNET_MESSENGER_MemberNotify::session.

Referenced by join_room_locally().

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◆ join_room_locally()

static int join_room_locally ( struct GNUNET_MESSENGER_SrvRoom room,
struct GNUNET_MESSENGER_SrvHandle handle 
)
static

Definition at line 296 of file gnunet-service-messenger_room.c.

298 {
299  const struct GNUNET_ShortHashCode *member_id = get_srv_handle_member_id (handle, get_srv_room_key(room));
300 
302  struct GNUNET_MESSENGER_Member *member = add_store_member(member_store, member_id);
303 
304  if (GNUNET_NO == join_room (room, handle, member))
305  return GNUNET_NO;
306 
307  const struct GNUNET_MESSENGER_Ego *ego = get_srv_handle_ego(handle);
308  struct GNUNET_MESSENGER_MemberSession *session = get_member_session (member, &(ego->pub));
309 
310  if (!session)
311  {
312  GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "A valid session is required to join a room!\n");
313  return GNUNET_NO;
314  }
315 
317 
318  notify.room = room;
319  notify.handle = handle;
320  notify.session = session;
321 
323 
324  return GNUNET_YES;
325 }
const struct GNUNET_ShortHashCode * get_srv_handle_member_id(const struct GNUNET_MESSENGER_SrvHandle *handle, const struct GNUNET_HashCode *key)
Returns the member id of a given handle in a specific room.
struct GNUNET_MESSENGER_MemberSession * get_member_session(const struct GNUNET_MESSENGER_Member *member, const struct GNUNET_IDENTITY_PublicKey *public_key)
Returns the member session of a member identified by a given public key.
int iterate_store_members(struct GNUNET_MESSENGER_MemberStore *store, GNUNET_MESSENGER_MemberIteratorCallback it, void *cls)
Iterate through all member sessions currently connected to the members of the given member store and ...
struct GNUNET_MESSENGER_Member * add_store_member(struct GNUNET_MESSENGER_MemberStore *store, const struct GNUNET_ShortHashCode *id)
Adds a member to a store under a specific id and returns it on success.
static int join_room(struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvHandle *handle, struct GNUNET_MESSENGER_Member *member)
static int iterate_notify_about_members(void *cls, const struct GNUNET_IDENTITY_PublicKey *public_key, struct GNUNET_MESSENGER_MemberSession *session)
struct GNUNET_IDENTITY_PublicKey pub
struct GNUNET_MESSENGER_SrvRoom * room

References add_store_member(), get_member_session(), get_srv_handle_ego(), get_srv_handle_member_id(), get_srv_room_key(), get_srv_room_member_store(), GNUNET_ERROR_TYPE_WARNING, GNUNET_log, GNUNET_NO, GNUNET_YES, handle, iterate_notify_about_members(), iterate_store_members(), join_room(), GNUNET_MESSENGER_MemberSession::member, notify, GNUNET_MESSENGER_Ego::pub, GNUNET_MESSENGER_MemberStore::room, GNUNET_MESSENGER_MemberNotify::room, and GNUNET_MESSENGER_MemberNotify::session.

Referenced by enter_srv_room_at(), and open_srv_room().

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◆ check_tunnel_message()

int check_tunnel_message ( void *  cls,
const struct GNUNET_MessageHeader header 
)

Definition at line 113 of file gnunet-service-messenger_tunnel.c.

115 {
116  struct GNUNET_MESSENGER_SrvTunnel *tunnel = cls;
117 
118  if (!tunnel)
119  return GNUNET_SYSERR;
120 
121  const uint16_t length = ntohs (header->size) - sizeof(*header);
122  const char *buffer = (const char*) &header[1];
123 
124  struct GNUNET_MESSENGER_Message message;
125 
127  {
128  GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "Tunnel error: Message too short! (%d)\n", length);
129  return GNUNET_SYSERR;
130  }
131 
132  uint16_t padding = 0;
133 
134  if (GNUNET_YES != decode_message (&message, length, buffer, GNUNET_YES, &padding))
135  {
136  GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "Tunnel error: Decoding failed!\n");
137  return GNUNET_SYSERR;
138  }
139 
140  struct GNUNET_HashCode hash;
141  hash_message (&message, length - padding, buffer, &hash);
142 
143  return callback_verify_room_message (tunnel->room, cls, &message, &hash);
144 }
int callback_verify_room_message(struct GNUNET_MESSENGER_SrvRoom *room, void *cls, struct GNUNET_MESSENGER_Message *message, struct GNUNET_HashCode *hash)
@ GNUNET_SYSERR
@ GNUNET_MESSENGER_KIND_UNKNOWN
The unknown kind.
void hash_message(const struct GNUNET_MESSENGER_Message *message, uint16_t length, const char *buffer, struct GNUNET_HashCode *hash)
Calculates a hash of a given buffer with a length in bytes from a message.
int decode_message(struct GNUNET_MESSENGER_Message *message, uint16_t length, const char *buffer, int include_header, uint16_t *padding)
Decodes a message from a given buffer of a maximal length in bytes.
uint16_t get_message_kind_size(enum GNUNET_MESSENGER_MessageKind kind, int include_header)
Returns the minimal size in bytes to encode a message of a specific kind.
uint16_t size
The length of the struct (in bytes, including the length field itself), in big-endian format.

References callback_verify_room_message(), decode_message(), get_message_kind_size(), GNUNET_ERROR_TYPE_WARNING, GNUNET_log, GNUNET_MESSENGER_KIND_UNKNOWN, GNUNET_SYSERR, GNUNET_YES, hash_message(), GNUNET_MESSENGER_SrvTunnel::room, and GNUNET_MessageHeader::size.

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◆ handle_tunnel_message()

void handle_tunnel_message ( void *  cls,
const struct GNUNET_MessageHeader header 
)

Definition at line 176 of file gnunet-service-messenger_tunnel.c.

177 {
178  struct GNUNET_MESSENGER_SrvTunnel *tunnel = cls;
179 
180  if (!tunnel)
181  return;
182 
183  const uint16_t length = ntohs (header->size) - sizeof(*header);
184  const char *buffer = (const char*) &header[1];
185 
186  struct GNUNET_MESSENGER_Message message;
187  struct GNUNET_HashCode hash;
188 
189  uint16_t padding = 0;
190 
191  decode_message (&message, length, buffer, GNUNET_YES, &padding);
192  hash_message (&message, length - padding, buffer, &hash);
193 
194  GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Got message of kind: %s!\n",
195  GNUNET_MESSENGER_name_of_kind(message.header.kind));
196 
197  const int new_message = update_room_message (
198  tunnel->room, copy_message (&message), &hash
199  );
200 
201  if (GNUNET_YES != new_message)
202  goto receive_done;
203 
204  update_tunnel_last_message (tunnel, &hash);
205 
206  int forward_message = GNUNET_YES;
207 
208  switch (message.header.kind)
209  {
211  forward_message = recv_message_info (tunnel->room, tunnel, &message, &hash);
212  break;
214  forward_message = recv_message_peer (tunnel->room, tunnel, &message, &hash);
215  break;
217  forward_message = recv_message_request (tunnel->room, tunnel, &message, &hash);
218  break;
219  default:
220  break;
221  }
222 
223  if (GNUNET_YES == forward_message)
224  {
225  forward_srv_room_message (tunnel->room, tunnel, &message, &hash);
226  callback_room_handle_message (tunnel->room, NULL, &message, &hash);
227  }
228 
229 receive_done:
230  cleanup_message(&message);
231 
233 }
int recv_message_peer(struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvTunnel *tunnel, const struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash)
Handles a received peer message to link it to its origin tunnel if the peer identity matches.
int recv_message_request(struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvTunnel *tunnel, const struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash)
Handles a received request message by checking for the requested message and forwarding it back if th...
int recv_message_info(struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvTunnel *tunnel, const struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash)
Handles a received info message to change the current member id to the one generated by the host conn...
void forward_srv_room_message(struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvTunnel *tunnel, struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash)
Forwards a message with a given hash to a specific tunnel inside of a room.
void callback_room_handle_message(struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvHandle *handle, const struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash)
int update_room_message(struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash)
static void update_tunnel_last_message(struct GNUNET_MESSENGER_SrvTunnel *tunnel, const struct GNUNET_HashCode *hash)
void GNUNET_CADET_receive_done(struct GNUNET_CADET_Channel *channel)
Send an ack on the channel to confirm the processing of a message.
Definition: cadet_api.c:872
const char * GNUNET_MESSENGER_name_of_kind(enum GNUNET_MESSENGER_MessageKind kind)
Get the name of a message kind.
Definition: messenger_api.c:36
@ GNUNET_MESSENGER_KIND_INFO
The info kind.
@ GNUNET_MESSENGER_KIND_REQUEST
The request kind.
@ GNUNET_MESSENGER_KIND_PEER
The peer kind.
struct GNUNET_MESSENGER_Message * copy_message(const struct GNUNET_MESSENGER_Message *message)
Creates and allocates a copy of a given message.
void cleanup_message(struct GNUNET_MESSENGER_Message *message)
Frees the messages body memory.

References callback_room_handle_message(), GNUNET_MESSENGER_SrvTunnel::channel, cleanup_message(), copy_message(), decode_message(), forward_srv_room_message(), GNUNET_CADET_receive_done(), GNUNET_ERROR_TYPE_DEBUG, GNUNET_log, GNUNET_MESSENGER_KIND_INFO, GNUNET_MESSENGER_KIND_PEER, GNUNET_MESSENGER_KIND_REQUEST, GNUNET_MESSENGER_name_of_kind(), GNUNET_YES, hash_message(), GNUNET_MESSENGER_Message::header, GNUNET_MESSENGER_MessageHeader::kind, recv_message_info(), recv_message_peer(), recv_message_request(), GNUNET_MESSENGER_SrvTunnel::room, GNUNET_MessageHeader::size, update_room_message(), and update_tunnel_last_message().

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◆ callback_tunnel_disconnect()

void callback_tunnel_disconnect ( void *  cls,
const struct GNUNET_CADET_Channel channel 
)

Definition at line 93 of file gnunet-service-messenger_tunnel.c.

95 {
96  struct GNUNET_MESSENGER_SrvTunnel *tunnel = cls;
97 
98  if (tunnel)
99  {
100  tunnel->channel = NULL;
101 
102  callback_room_disconnect (tunnel->room, cls);
103  }
104 }
void callback_room_disconnect(struct GNUNET_MESSENGER_SrvRoom *room, void *cls)

References callback_room_disconnect(), GNUNET_MESSENGER_SrvTunnel::channel, and GNUNET_MESSENGER_SrvTunnel::room.

Referenced by connect_tunnel(), and open_srv_room().

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◆ open_srv_room()

int open_srv_room ( struct GNUNET_MESSENGER_SrvRoom room,
struct GNUNET_MESSENGER_SrvHandle handle 
)

Tries to open a room for a given handle.

If the room has already been opened, the handle will locally join the room.

Calling this method should result in joining a room and sending a peer message as well for this peer.

If the function returns GNUNET_YES the port for this room is guaranteed to be open for incoming connections.

Parameters
[in,out]roomRoom
[in,out]handleHandle
Returns
GNUNET_YES on success, GNUNET_NO on failure.

Definition at line 340 of file gnunet-service-messenger_room.c.

342 {
343  GNUNET_assert((room) && (handle));
344 
345  if (room->port)
346  return join_room_locally (room, handle);
347 
349  const struct GNUNET_HashCode *key = get_srv_room_key (room);
350 
352  struct GNUNET_MessageHeader, NULL),
354 
355  struct GNUNET_HashCode port;
358  handlers);
359 
360  if (room->port)
361  GNUNET_log(GNUNET_ERROR_TYPE_INFO, "Port of room (%s) was opened!\n",
363  else
364  GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "Port of room (%s) could not be opened!\n",
366 
367  const struct GNUNET_ShortHashCode *member_id = get_srv_handle_member_id (handle, get_srv_room_key(room));
368 
370  struct GNUNET_MESSENGER_Member *member = add_store_member(member_store, member_id);
371 
372  if ((GNUNET_NO == join_room (room, handle, member)) && (room->port))
373  {
374  GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "You could not join the room, therefore it keeps closed!\n");
375 
377  room->port = NULL;
378 
379  return GNUNET_NO;
380  }
381 
382  struct GNUNET_MESSENGER_Message *peer_msg = create_message_peer (room->service);
383  GNUNET_memcpy(&(peer_msg->header.sender_id), member_id, sizeof(*member_id));
384  return (room->port ? send_srv_room_message (room, handle, peer_msg) : GNUNET_NO);
385 }
static uint16_t port
Port number.
Definition: gnunet-bcd.c:147
static struct GNUNET_CADET_MessageHandler handlers[]
Handlers, for diverse services.
static struct GNUNET_CADET_Handle * cadet
Handle for cadet.
struct GNUNET_MESSENGER_Message * create_message_peer(const struct GNUNET_MESSENGER_Service *service)
Creates and allocates a new peer message containing a services peer identity.
struct GNUNET_CADET_Handle * get_srv_room_cadet(struct GNUNET_MESSENGER_SrvRoom *room)
Returns the CADET handle from a rooms service.
static int join_room_locally(struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvHandle *handle)
static void * callback_room_connect(void *cls, struct GNUNET_CADET_Channel *channel, const struct GNUNET_PeerIdentity *source)
void callback_tunnel_disconnect(void *cls, const struct GNUNET_CADET_Channel *channel)
struct GNUNET_CADET_Port * GNUNET_CADET_open_port(struct GNUNET_CADET_Handle *h, const struct GNUNET_HashCode *port, GNUNET_CADET_ConnectEventHandler connects, void *connects_cls, GNUNET_CADET_WindowSizeEventHandler window_changes, GNUNET_CADET_DisconnectEventHandler disconnects, const struct GNUNET_MQ_MessageHandler *handlers)
Open a port to receive incoming MQ-based channels.
Definition: cadet_api.c:954
#define GNUNET_MQ_handler_end()
End-marker for the handlers array.
#define GNUNET_MQ_hd_var_size(name, code, str, ctx)
#define GNUNET_MESSAGE_TYPE_CADET_CLI
Traffic (net-cat style) used by the Command Line Interface.
void convert_messenger_key_to_port(const struct GNUNET_HashCode *key, struct GNUNET_HashCode *port)
Converts a Messenger service key of a room to the specific port which gets used for the CADET channel...
Opaque handle to the service.
Definition: cadet_api.c:39
Message handler for a specific message type.
Header for all communications.

References add_store_member(), cadet, callback_room_connect(), callback_tunnel_disconnect(), convert_messenger_key_to_port(), create_message_peer(), get_srv_handle_member_id(), get_srv_room_cadet(), get_srv_room_key(), get_srv_room_member_store(), GNUNET_assert, GNUNET_CADET_close_port(), GNUNET_CADET_open_port(), GNUNET_ERROR_TYPE_INFO, GNUNET_ERROR_TYPE_WARNING, GNUNET_h2s(), GNUNET_log, GNUNET_memcpy, GNUNET_MESSAGE_TYPE_CADET_CLI, GNUNET_MQ_handler_end, GNUNET_MQ_hd_var_size, GNUNET_NO, handle, handlers, GNUNET_MESSENGER_Message::header, join_room(), join_room_locally(), key, port, GNUNET_MESSENGER_SrvRoom::port, GNUNET_MESSENGER_MemberStore::room, GNUNET_MESSENGER_MemberNotify::room, send_srv_room_message(), GNUNET_MESSENGER_MessageHeader::sender_id, and GNUNET_MESSENGER_SrvRoom::service.

Referenced by open_service_room().

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◆ enter_srv_room_at()

int enter_srv_room_at ( struct GNUNET_MESSENGER_SrvRoom room,
struct GNUNET_MESSENGER_SrvHandle handle,
const struct GNUNET_PeerIdentity door 
)

Connects a tunnel to a hosting peer of a room through a so called door which is represented by a peer identity of a hosting peer.

During the connection the handle will join the room as a member, waiting for an info message from the selected host.

Parameters
[in,out]roomRoom
[in,out]handleHandle
[in]doorPeer identity
Returns
GNUNET_YES on success, GNUNET_NO on failure.

Definition at line 388 of file gnunet-service-messenger_room.c.

391 {
392  GNUNET_assert((room) && (handle) && (door));
393 
394  struct GNUNET_PeerIdentity peer;
395 
396  if ((GNUNET_OK == get_service_peer_identity (room->service, &peer)) &&
397  (0 == GNUNET_memcmp(&peer, door)))
398  return join_room_locally (room, handle);
399 
401 
402  if (!tunnel)
403  {
404  tunnel = create_tunnel (room, door);
405 
408  {
409  GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "You could not connect to that door!\n");
410  destroy_tunnel (tunnel);
411  return GNUNET_NO;
412  }
413  }
414 
415  if (GNUNET_SYSERR == connect_tunnel (tunnel))
416  {
417  GNUNET_log(GNUNET_ERROR_TYPE_ERROR, "Connection failure during entrance!\n");
419  destroy_tunnel (tunnel);
420  return GNUNET_NO;
421  }
422 
423  return join_room_locally (room, handle);
424 }
int get_service_peer_identity(const struct GNUNET_MESSENGER_Service *service, struct GNUNET_PeerIdentity *peer)
Tries to write the peer identity of the peer running a service on to the peer parameter.
int connect_tunnel(struct GNUNET_MESSENGER_SrvTunnel *tunnel)
Tries to connect a tunnel by creating a new CADET channel and binding it.
void * GNUNET_CONTAINER_multipeermap_get(const struct GNUNET_CONTAINER_MultiPeerMap *map, const struct GNUNET_PeerIdentity *key)
Given a key find a value in the map matching the key.
#define GNUNET_memcmp(a, b)
Compare memory in a and b, where both must be of the same pointer type.
The identity of the host (wraps the signing key of the peer).
struct GNUNET_TESTBED_Peer * peer
The peer associated with this model.

References connect_tunnel(), create_tunnel(), destroy_tunnel(), get_service_peer_identity(), GNUNET_assert, GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE, GNUNET_CONTAINER_multipeermap_get(), GNUNET_CONTAINER_multipeermap_put(), GNUNET_CONTAINER_multipeermap_remove(), GNUNET_ERROR_TYPE_ERROR, GNUNET_ERROR_TYPE_WARNING, GNUNET_log, GNUNET_memcmp, GNUNET_NO, GNUNET_OK, GNUNET_SYSERR, handle, join_room_locally(), peer, GNUNET_MESSENGER_SrvTunnel::room, GNUNET_MESSENGER_SrvRoom::service, and GNUNET_MESSENGER_SrvRoom::tunnels.

Referenced by entry_service_room().

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◆ pack_srv_room_message()

struct GNUNET_MQ_Envelope* pack_srv_room_message ( const struct GNUNET_MESSENGER_SrvRoom room,
const struct GNUNET_MESSENGER_SrvHandle handle,
struct GNUNET_MESSENGER_Message message,
struct GNUNET_HashCode hash,
int  mode 
)

Packs a message depending on the selected mode into a newly allocated envelope.

It will set the timestamp of the message, the sender id and the previous messages hash automatically before packing. The message will be signed by the handles EGO.

If the optional hash parameter is a valid pointer, its value will be overridden by the signed messages hash.

If mode is set to GNUNET_MESSENGER_PACK_MODE_ENVELOPE, the function returns a valid envelope to send through a message queue, otherwise NULL.

Parameters
[in]roomRoom
[in]handleHandle
[in,out]messageMessage
[out]hashHash of message
[in]modePacking mode
Returns
New envelope or NULL

Definition at line 427 of file gnunet-service-messenger_room.c.

432 {
433  GNUNET_assert((room) && (handle) && (message) && (hash));
434 
436 
438 
439  GNUNET_assert(id);
440 
441  GNUNET_memcpy(&(message->header.sender_id), id, sizeof(struct GNUNET_ShortHashCode));
442  get_message_state_chain_hash (&(room->state), &(message->header.previous));
443 
444  return pack_message (message, hash, get_srv_handle_ego (handle), mode);
445 }
void get_message_state_chain_hash(const struct GNUNET_MESSENGER_MessageState *state, struct GNUNET_HashCode *hash)
static enum @8 mode
Should we do a PUT (mode = 0) or GET (mode = 1);.
struct GNUNET_TIME_Absolute GNUNET_TIME_absolute_get(void)
Get the current time.
Definition: time.c:111
struct GNUNET_TIME_AbsoluteNBO GNUNET_TIME_absolute_hton(struct GNUNET_TIME_Absolute a)
Convert absolute time to network byte order.
Definition: time.c:638
struct GNUNET_MQ_Envelope * pack_message(struct GNUNET_MESSENGER_Message *message, struct GNUNET_HashCode *hash, const struct GNUNET_MESSENGER_Ego *ego, int mode)
Encodes the message to pack it into a newly allocated envelope if mode is equal to GNUNET_MESSENGER_P...
struct GNUNET_HashCode previous
The hash of the previous message from the senders perspective.
struct GNUNET_TIME_AbsoluteNBO timestamp
The timestamp of the message.

References get_message_state_chain_hash(), get_srv_handle_ego(), get_srv_handle_member_id(), get_srv_room_key(), GNUNET_assert, GNUNET_memcpy, GNUNET_TIME_absolute_get(), GNUNET_TIME_absolute_hton(), handle, GNUNET_MESSENGER_Message::header, mode, pack_message(), GNUNET_MESSENGER_MessageHeader::previous, GNUNET_MESSENGER_MessageHeader::sender_id, GNUNET_MESSENGER_SrvRoom::state, and GNUNET_MESSENGER_MessageHeader::timestamp.

Referenced by iterate_send_room_message(), send_srv_room_message(), and send_tunnel_message().

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◆ iterate_send_room_message()

static int iterate_send_room_message ( void *  cls,
const struct GNUNET_PeerIdentity key,
void *  value 
)
static

Definition at line 458 of file gnunet-service-messenger_room.c.

461 {
462  struct GNUNET_MESSENGER_SrvTunnel *tunnel = value;
463 
464  if ((!is_tunnel_connected (tunnel)) ||
466  return GNUNET_YES;
467 
468  struct GNUNET_MESSENGER_ClosureSendRoom *closure = cls;
469 
470  if (tunnel == closure->exclude)
471  return GNUNET_YES;
472 
473  struct GNUNET_MQ_Envelope *env = NULL;
474 
475  if (closure->packed == GNUNET_NO)
476  {
477  env = pack_srv_room_message (closure->room, closure->handle, closure->message, closure->hash,
479 
480  if (env)
481  closure->packed = GNUNET_YES;
482  }
483  else
485 
486  if (env)
487  send_tunnel_envelope (tunnel, env, closure->hash);
488 
489  return GNUNET_YES;
490 }
struct GNUNET_MQ_Envelope * env
Definition: 005.c:1
struct GNUNET_MQ_Envelope * pack_srv_room_message(const struct GNUNET_MESSENGER_SrvRoom *room, const struct GNUNET_MESSENGER_SrvHandle *handle, struct GNUNET_MESSENGER_Message *message, struct GNUNET_HashCode *hash, int mode)
Packs a message depending on the selected mode into a newly allocated envelope.
void send_tunnel_envelope(struct GNUNET_MESSENGER_SrvTunnel *tunnel, struct GNUNET_MQ_Envelope *env, const struct GNUNET_HashCode *hash)
Sends an envelope containing a message with a given hash through a tunnel.
uint32_t get_tunnel_messenger_version(const struct GNUNET_MESSENGER_SrvTunnel *tunnel)
Returns the current messenger version the peer connected via a given tunnel has reported to be using ...
#define GNUNET_MESSENGER_VERSION
Version number of GNUnet Messenger API.
#define GNUNET_MESSENGER_PACK_MODE_ENVELOPE
struct GNUNET_MESSENGER_SrvHandle * handle
struct GNUNET_MESSENGER_Message * message
struct GNUNET_MESSENGER_SrvTunnel * exclude
struct GNUNET_MESSENGER_SrvRoom * room

References env, GNUNET_MESSENGER_ClosureSendRoom::exclude, get_tunnel_messenger_version(), GNUNET_MESSENGER_PACK_MODE_ENVELOPE, GNUNET_MESSENGER_VERSION, GNUNET_NO, GNUNET_YES, GNUNET_MESSENGER_ClosureSendRoom::handle, GNUNET_MESSENGER_ClosureSendRoom::hash, is_tunnel_connected(), GNUNET_MESSENGER_ClosureSendRoom::message, pack_message(), pack_srv_room_message(), GNUNET_MESSENGER_ClosureSendRoom::packed, GNUNET_MESSENGER_ClosureSendRoom::room, send_tunnel_envelope(), and value.

Referenced by forward_srv_room_message(), and send_srv_room_message().

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◆ update_room_message()

int update_room_message ( struct GNUNET_MESSENGER_SrvRoom room,
struct GNUNET_MESSENGER_Message message,
const struct GNUNET_HashCode hash 
)

Definition at line 994 of file gnunet-service-messenger_room.c.

997 {
998  GNUNET_assert((room) && (message) && (hash));
999 
1001 
1002  const int requested = (GNUNET_MESSENGER_OP_REQUEST == get_store_operation_type(operation_store, hash)?
1004  );
1005 
1006  if (GNUNET_YES == requested)
1007  cancel_store_operation(operation_store, hash);
1008 
1009  struct GNUNET_MESSENGER_MessageStore *message_store = get_srv_room_message_store(room);
1010 
1011  const struct GNUNET_MESSENGER_Message *old_message = get_store_message (message_store, hash);
1012 
1013  GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Handle a message in room (%s).\n", GNUNET_h2s (get_srv_room_key(room)));
1014 
1015  if ((old_message) || (GNUNET_OK != put_store_message (message_store, hash, message)))
1016  {
1017  if (old_message != message)
1018  destroy_message(message);
1019 
1020  GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Duplicate message got dropped!\n");
1021  return GNUNET_NO;
1022  }
1023 
1024  update_message_state(&(room->state), requested, message, hash);
1025 
1026  if ((GNUNET_YES == requested) ||
1027  (GNUNET_MESSENGER_KIND_INFO == message->header.kind) ||
1029  return GNUNET_YES;
1030 
1031  if ((GNUNET_MESSENGER_KIND_MERGE == message->header.kind) &&
1032  (GNUNET_MESSENGER_OP_MERGE == get_store_operation_type(operation_store, &(message->body.merge.previous))))
1033  cancel_store_operation(operation_store, &(message->body.merge.previous));
1034 
1035  if (GNUNET_MESSENGER_OP_MERGE == get_store_operation_type(operation_store, &(message->header.previous)))
1036  cancel_store_operation(operation_store, &(message->header.previous));
1037 
1038  return GNUNET_YES;
1039 }
void update_message_state(struct GNUNET_MESSENGER_MessageState *state, int requested, const struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash)
int put_store_message(struct GNUNET_MESSENGER_MessageStore *store, const struct GNUNET_HashCode *hash, struct GNUNET_MESSENGER_Message *message)
Stores a message into the message store.
void cancel_store_operation(struct GNUNET_MESSENGER_OperationStore *store, const struct GNUNET_HashCode *hash)
Stops any active operation under a given hash in a specific operation store.
@ GNUNET_MESSENGER_KIND_MERGE
The merge kind.
void destroy_message(struct GNUNET_MESSENGER_Message *message)
Destroys a message and frees its memory fully.
struct GNUNET_MESSENGER_MessageMerge merge
enum GNUNET_MESSENGER_MessageKind kind
The kind of the message.
struct GNUNET_HashCode previous
The hash of a second previous message.
struct GNUNET_MESSENGER_MessageBody body
Body.

References GNUNET_MESSENGER_Message::body, cancel_store_operation(), destroy_message(), get_srv_room_key(), get_srv_room_message_store(), get_srv_room_operation_store(), get_store_message(), get_store_operation_type(), GNUNET_assert, GNUNET_ERROR_TYPE_DEBUG, GNUNET_h2s(), GNUNET_log, GNUNET_MESSENGER_KIND_INFO, GNUNET_MESSENGER_KIND_MERGE, GNUNET_MESSENGER_KIND_REQUEST, GNUNET_MESSENGER_OP_MERGE, GNUNET_MESSENGER_OP_REQUEST, GNUNET_NO, GNUNET_OK, GNUNET_YES, GNUNET_MESSENGER_Message::header, GNUNET_MESSENGER_MessageHeader::kind, GNUNET_MESSENGER_MessageBody::merge, GNUNET_MESSENGER_MessageHeader::previous, GNUNET_MESSENGER_MessageMerge::previous, put_store_message(), GNUNET_MESSENGER_OperationStore::room, GNUNET_MESSENGER_SrvRoom::state, and update_message_state().

Referenced by handle_tunnel_message(), and send_srv_room_message().

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◆ callback_room_handle_message()

void callback_room_handle_message ( struct GNUNET_MESSENGER_SrvRoom room,
struct GNUNET_MESSENGER_SrvHandle handle,
const struct GNUNET_MESSENGER_Message message,
const struct GNUNET_HashCode hash 
)

Definition at line 1086 of file gnunet-service-messenger_room.c.

1090 {
1092  struct GNUNET_MESSENGER_Member *member = get_store_member_of(member_store, message);
1093 
1094  GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Callback for message (%s)\n", GNUNET_h2s (hash));
1095 
1096  if (!member)
1097  {
1098  GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "Message handling dropped: Member is missing!\n");
1099  return;
1100  }
1101 
1102  struct GNUNET_MESSENGER_MemberSession *session = get_member_session_of(member, message, hash);
1103 
1104  if (!session)
1105  {
1106  GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "Message handling dropped: Session is missing!\n");
1107  return;
1108  }
1109 
1110  struct GNUNET_MESSENGER_MemberUpdate update;
1111  update.message = message;
1112  update.hash = hash;
1113 
1114  update.head = NULL;
1115  update.tail = NULL;
1116 
1117  iterate_store_members(member_store, iterate_update_member_sessions, &update);
1118 
1119  while (update.head)
1120  {
1121  struct GNUNET_MESSENGER_MemberSessionCompletion *element = update.head;
1122 
1123  remove_room_member_session (room, element->session);
1124 
1125  GNUNET_CONTAINER_DLL_remove(update.head, update.tail, element);
1126  GNUNET_free (element);
1127  }
1128 
1129  const int start_handle = room->handling.head ? GNUNET_NO : GNUNET_YES;
1130 
1131  add_to_list_messages (&(room->handling), hash);
1132 
1133  switch (message->header.kind)
1134  {
1136  handle_message_join (room, session, message, hash);
1137  break;
1139  handle_message_leave (room, session, message, hash);
1140  break;
1142  handle_message_name (room, session, message, hash);
1143  break;
1145  handle_message_key (room, session, message, hash);
1146  break;
1148  handle_message_peer (room, session, message, hash);
1149  break;
1151  handle_message_id (room, session, message, hash);
1152  break;
1154  handle_message_miss (room, session, message, hash);
1155  break;
1157  handle_message_delete (room, session, message, hash);
1158  break;
1159  default:
1160  break;
1161  }
1162 
1163  if (GNUNET_YES == start_handle)
1164  handle_room_messages (room);
1165 }
void add_to_list_messages(struct GNUNET_MESSENGER_ListMessages *messages, const struct GNUNET_HashCode *hash)
Adds a specific hash from a message to the end of the list.
void handle_message_key(struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_MemberSession *session, const struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash)
Handles a received or sent key message to change the key of a member and rearrange the contacts accor...
void handle_message_peer(struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_MemberSession *session, const struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash)
Handles a received or sent peer message to make changes of the basement in the room.
void handle_message_join(struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_MemberSession *session, const struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash)
Handles a received or sent join message to make changes of current member information.
void handle_message_miss(struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_MemberSession *session, const struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash)
Handles a received or sent miss message to drop a peer from the basement in the room.
void handle_message_id(struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_MemberSession *session, const struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash)
Handles a received or sent id message to change a members id.
void handle_message_name(struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_MemberSession *session, const struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash)
Handles a received or sent name message to rename a current member.
void handle_message_leave(struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_MemberSession *session, const struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash)
Handles a received or sent leave message to make changes of current member information.
void handle_message_delete(struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_MemberSession *session, const struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash)
Handles a received or sent delete message to delete a specific message from the store.
static void remove_room_member_session(struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_MemberSession *session)
static int iterate_update_member_sessions(void *cls, const struct GNUNET_IDENTITY_PublicKey *public_key, struct GNUNET_MESSENGER_MemberSession *session)
@ GNUNET_MESSENGER_KIND_MISS
The miss kind.
@ GNUNET_MESSENGER_KIND_NAME
The name kind.
@ GNUNET_MESSENGER_KIND_LEAVE
The leave kind.
@ GNUNET_MESSENGER_KIND_KEY
The key kind.
@ GNUNET_MESSENGER_KIND_JOIN
The join kind.
@ GNUNET_MESSENGER_KIND_DELETE
The delete kind.
@ GNUNET_MESSENGER_KIND_ID
The id kind.
struct GNUNET_MESSENGER_MemberSession * session
const struct GNUNET_MESSENGER_Message * message

References add_to_list_messages(), get_member_session_of(), get_srv_room_member_store(), get_store_member_of(), GNUNET_CONTAINER_DLL_remove, GNUNET_ERROR_TYPE_DEBUG, GNUNET_ERROR_TYPE_WARNING, GNUNET_free, GNUNET_h2s(), GNUNET_log, GNUNET_MESSENGER_KIND_DELETE, GNUNET_MESSENGER_KIND_ID, GNUNET_MESSENGER_KIND_JOIN, GNUNET_MESSENGER_KIND_KEY, GNUNET_MESSENGER_KIND_LEAVE, GNUNET_MESSENGER_KIND_MISS, GNUNET_MESSENGER_KIND_NAME, GNUNET_MESSENGER_KIND_PEER, GNUNET_NO, GNUNET_YES, handle_message_delete(), handle_message_id(), handle_message_join(), handle_message_key(), handle_message_leave(), handle_message_miss(), handle_message_name(), handle_message_peer(), handle_room_messages(), GNUNET_MESSENGER_SrvRoom::handling, GNUNET_MESSENGER_MemberUpdate::hash, GNUNET_MESSENGER_ListMessages::head, GNUNET_MESSENGER_MemberUpdate::head, GNUNET_MESSENGER_Message::header, iterate_store_members(), iterate_update_member_sessions(), GNUNET_MESSENGER_MessageHeader::kind, GNUNET_MESSENGER_MemberSession::member, GNUNET_MESSENGER_MemberUpdate::message, remove_room_member_session(), GNUNET_MESSENGER_MemberStore::room, GNUNET_MESSENGER_MemberSessionCompletion::session, and GNUNET_MESSENGER_MemberUpdate::tail.

Referenced by handle_tunnel_message(), and send_srv_room_message().

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◆ send_srv_room_message()

int send_srv_room_message ( struct GNUNET_MESSENGER_SrvRoom room,
struct GNUNET_MESSENGER_SrvHandle handle,
struct GNUNET_MESSENGER_Message message 
)

Sends a message from a given handle into a room.

The hash parameter will be updated with the hash-value resulting from the sent message.

The function handles packing the message automatically and will call linked message-events locally even if the message won't be sent to another peer.

The function returns GNUNET_YES on success, GNUNET_NO if message is null and GNUNET_SYSERR if the message was known already.

Parameters
[in,out]roomRoom
[in,out]handleHandle
[in,out]messageMessage
Returns
GNUNET_YES on success, GNUNET_NO or GNUNET_SYSERR otherwise.

Definition at line 504 of file gnunet-service-messenger_room.c.

507 {
508  GNUNET_assert((room) && (handle));
509 
510  if (!message)
511  return GNUNET_NO;
512 
513  if (GNUNET_YES == is_message_session_bound(message))
515 
516  GNUNET_log(GNUNET_ERROR_TYPE_INFO, "Sending message from handle with member id: %s\n",
518 
519  struct GNUNET_HashCode hash;
520  struct GNUNET_MESSENGER_ClosureSendRoom closure;
521 
522  closure.room = room;
523  closure.handle = handle;
524  closure.exclude = NULL;
525  closure.message = message;
526  closure.hash = &hash;
527  closure.packed = GNUNET_NO;
528 
530 
531  if (GNUNET_NO == closure.packed)
533 
534  const int new_message = update_room_message (room, message, &hash);
535 
536  if (GNUNET_YES != new_message)
537  return GNUNET_SYSERR;
538 
539  switch (message->header.kind)
540  {
543  break;
546  break;
549  break;
552  break;
553  default:
554  break;
555  }
556 
558  return GNUNET_YES;
559 }
void send_message_id(struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvHandle *handle, const struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash)
Handles a sent id message to update the handles member id in the room.
void send_message_request(struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvHandle *handle, const struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash)
Handles a sent request message to trigger the request operation for this service.
void send_message_join(struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvHandle *handle, const struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash)
Handles a sent join message to ensure growth of the decentralized room structure.
void send_message_peer(struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvHandle *handle, const struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash)
Handles a sent peer message to update the rooms peer message of this service.
void merge_srv_room_last_messages(struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvHandle *handle)
Reduces all current forks inside of the message history of a room to one remaining last message by me...
void callback_room_handle_message(struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvHandle *handle, const struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash)
int update_room_message(struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash)
static int iterate_send_room_message(void *cls, const struct GNUNET_PeerIdentity *key, void *value)
int is_message_session_bound(const struct GNUNET_MESSENGER_Message *message)
Returns if the message should be bound to a member session.
#define GNUNET_MESSENGER_PACK_MODE_UNKNOWN

References callback_room_handle_message(), GNUNET_MESSENGER_ClosureSendRoom::exclude, get_srv_handle_member_id(), get_srv_room_key(), GNUNET_assert, GNUNET_CONTAINER_multipeermap_iterate(), GNUNET_ERROR_TYPE_INFO, GNUNET_log, GNUNET_MESSENGER_KIND_ID, GNUNET_MESSENGER_KIND_JOIN, GNUNET_MESSENGER_KIND_PEER, GNUNET_MESSENGER_KIND_REQUEST, GNUNET_MESSENGER_PACK_MODE_UNKNOWN, GNUNET_NO, GNUNET_sh2s(), GNUNET_SYSERR, GNUNET_YES, handle, GNUNET_MESSENGER_ClosureSendRoom::handle, GNUNET_MESSENGER_ClosureSendRoom::hash, GNUNET_MESSENGER_Message::header, is_message_session_bound(), iterate_send_room_message(), GNUNET_MESSENGER_MessageHeader::kind, merge_srv_room_last_messages(), GNUNET_MESSENGER_ClosureSendRoom::message, pack_srv_room_message(), GNUNET_MESSENGER_ClosureSendRoom::packed, GNUNET_MESSENGER_ClosureSendRoom::room, send_message_id(), send_message_join(), send_message_peer(), send_message_request(), GNUNET_MESSENGER_SrvRoom::tunnels, and update_room_message().

Referenced by callback_found_message(), callback_room_disconnect(), callback_room_merge(), check_srv_room_peer_status(), close_service_room(), join_room(), merge_srv_room_last_messages(), open_srv_room(), send_srv_handle_message(), and solve_srv_room_member_collisions().

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◆ forward_srv_room_message()

void forward_srv_room_message ( struct GNUNET_MESSENGER_SrvRoom room,
struct GNUNET_MESSENGER_SrvTunnel tunnel,
struct GNUNET_MESSENGER_Message message,
const struct GNUNET_HashCode hash 
)

Forwards a message with a given hash to a specific tunnel inside of a room.

Parameters
[in,out]roomRoom
[in,out]tunnelTunnel
[in,out]messageMessage
[in]hashHash of message

Definition at line 562 of file gnunet-service-messenger_room.c.

566 {
567  GNUNET_assert((room) && (tunnel));
568 
569  if (!message)
570  return;
571 
572  struct GNUNET_MESSENGER_ClosureSendRoom closure;
573  struct GNUNET_HashCode message_hash;
574 
575  GNUNET_memcpy(&message_hash, hash, sizeof(struct GNUNET_HashCode));
576 
577  closure.room = room;
578  closure.handle = NULL;
579  closure.exclude = tunnel;
580  closure.message = message;
581  closure.hash = &message_hash;
582  closure.packed = GNUNET_YES;
583 
585 }

References GNUNET_MESSENGER_ClosureSendRoom::exclude, GNUNET_assert, GNUNET_CONTAINER_multipeermap_iterate(), GNUNET_memcpy, GNUNET_YES, GNUNET_MESSENGER_ClosureSendRoom::handle, GNUNET_MESSENGER_ClosureSendRoom::hash, iterate_send_room_message(), GNUNET_MESSENGER_ClosureSendRoom::message, GNUNET_MESSENGER_ClosureSendRoom::packed, GNUNET_MESSENGER_ClosureSendRoom::room, and GNUNET_MESSENGER_SrvRoom::tunnels.

Referenced by handle_tunnel_message().

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◆ check_srv_room_peer_status()

void check_srv_room_peer_status ( struct GNUNET_MESSENGER_SrvRoom room,
struct GNUNET_MESSENGER_SrvTunnel tunnel 
)

Checks the current state of opening a given room from this peer and re-publishes it if necessary to a selected tunnel or to all connected tunnels if necessary or if the selected tunnel is NULL.

Parameters
[in,out]roomRoom
[in,out]tunnelTunnel

Definition at line 588 of file gnunet-service-messenger_room.c.

590 {
591  if (!room->peer_message)
592  return;
593 
594  struct GNUNET_MESSENGER_MessageStore *message_store = get_srv_room_message_store(room);
595 
596  const struct GNUNET_MESSENGER_Message *message = get_store_message(message_store, room->peer_message);
597 
598  if (!message)
599  {
600  GNUNET_free(room->peer_message);
601  room->peer_message = NULL;
602  return;
603  }
604 
606  struct GNUNET_MESSENGER_Member *member = get_store_member_of(member_store, message);
607 
608  if (!member)
609  goto resend_peer_message;
610 
611  struct GNUNET_MESSENGER_MemberSession *session = get_member_session_of(member, message, room->peer_message);
612 
613  if (GNUNET_YES == is_member_session_closed(session))
614  goto resend_peer_message;
615 
616  if (tunnel)
617  forward_tunnel_message(tunnel, message, room->peer_message);
618 
619  return;
620 
621 resend_peer_message:
622  if (room->host)
623  send_srv_room_message (room, room->host, create_message_peer (room->service));
624 }
int is_member_session_closed(const struct GNUNET_MESSENGER_MemberSession *session)
Returns if the given member session has been closed.
void forward_tunnel_message(struct GNUNET_MESSENGER_SrvTunnel *tunnel, const struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash)
Forwards a given message with a known hash through a tunnel.

References create_message_peer(), forward_tunnel_message(), get_member_session_of(), get_srv_room_member_store(), get_srv_room_message_store(), get_store_member_of(), get_store_message(), GNUNET_free, GNUNET_YES, GNUNET_MESSENGER_SrvRoom::host, is_member_session_closed(), GNUNET_MESSENGER_MemberSession::member, GNUNET_MESSENGER_SrvRoom::peer_message, GNUNET_MESSENGER_MemberStore::room, send_srv_room_message(), and GNUNET_MESSENGER_SrvRoom::service.

Referenced by recv_message_info(), and send_message_join().

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◆ merge_srv_room_last_messages()

void merge_srv_room_last_messages ( struct GNUNET_MESSENGER_SrvRoom room,
struct GNUNET_MESSENGER_SrvHandle handle 
)

Reduces all current forks inside of the message history of a room to one remaining last message by merging them down.

All merge messages will be sent from a given handle.

Parameters
[in,out]roomRoom
[in,out]handleHandle

Definition at line 627 of file gnunet-service-messenger_room.c.

629 {
630  GNUNET_assert(room);
631 
632  if (!handle)
633  return;
634 
635  const struct GNUNET_HashCode *hash;
636 
637 merge_next:
638  hash = get_message_state_merge_hash (&(room->state));
639 
640  if (!hash)
641  return;
642 
644  goto merge_next;
645 }
struct GNUNET_MESSENGER_Message * create_message_merge(const struct GNUNET_HashCode *previous)
Creates and allocates a new merge message containing the hash of a second previous message besides th...

References create_message_merge(), get_message_state_merge_hash(), GNUNET_assert, handle, send_srv_room_message(), and GNUNET_MESSENGER_SrvRoom::state.

Referenced by send_srv_room_message().

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◆ callback_room_deletion()

void callback_room_deletion ( struct GNUNET_MESSENGER_SrvRoom room,
const struct GNUNET_HashCode hash 
)

Definition at line 648 of file gnunet-service-messenger_room.c.

650 {
652  {
653  GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "Deletion of message failed! (%s)\n", GNUNET_h2s(hash));
654  return;
655  }
656 }
int delete_store_message(struct GNUNET_MESSENGER_MessageStore *store, const struct GNUNET_HashCode *hash)
Deletes a message in the message store.

References delete_store_message(), get_srv_room_message_store(), GNUNET_ERROR_TYPE_WARNING, GNUNET_h2s(), GNUNET_log, and GNUNET_OK.

Referenced by callback_store_operation().

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◆ callback_room_merge()

void callback_room_merge ( struct GNUNET_MESSENGER_SrvRoom room,
const struct GNUNET_HashCode hash 
)

Definition at line 659 of file gnunet-service-messenger_room.c.

661 {
662  if (!room->host)
663  return;
664 
665  send_srv_room_message (room, room->host, create_message_merge (hash));
666 }

References create_message_merge(), GNUNET_MESSENGER_SrvRoom::host, and send_srv_room_message().

Referenced by callback_store_operation().

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◆ delete_srv_room_message()

int delete_srv_room_message ( struct GNUNET_MESSENGER_SrvRoom room,
struct GNUNET_MESSENGER_MemberSession session,
const struct GNUNET_HashCode hash,
const struct GNUNET_TIME_Relative  delay 
)

Deletes a message from the room with a given hash in a specific delay if the provided member by its session is permitted to do so.

Parameters
[in,out]roomRoom
[in,out]sessionMember session
[in]hashHash of message
[in]delayDelay of deletion
Returns
GNUNET_YES on success, GNUNET_NO if permission gets denied, GNUNET_SYSERR on operation failure

Definition at line 669 of file gnunet-service-messenger_room.c.

673 {
674  GNUNET_assert((room) && (session) && (hash));
675 
677 
678  if (0 == GNUNET_memcmp(&forever, &delay))
679  {
680  GNUNET_log(GNUNET_ERROR_TYPE_INFO, "Deletion is delayed forever: operation is impossible!\n");
681  return GNUNET_SYSERR;
682  }
683 
684  struct GNUNET_MESSENGER_MessageStore *message_store = get_srv_room_message_store(room);
685 
686  const struct GNUNET_MESSENGER_Message *message = get_store_message(message_store, hash);
687 
688  if (!message)
689  return GNUNET_YES;
690 
691  if (GNUNET_YES != check_member_session_history(session, hash, GNUNET_YES))
692  {
693  GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "Unpermitted request for deletion by member (%s) of message (%s)!\n",
694  GNUNET_sh2s(get_member_session_id(session)), GNUNET_h2s(hash));
695 
696  return GNUNET_NO;
697  }
698 
700 
701  if (GNUNET_OK != use_store_operation(operation_store, hash, GNUNET_MESSENGER_OP_DELETE, delay))
702  {
703  GNUNET_log(GNUNET_ERROR_TYPE_ERROR, "Deletion has failed: operation denied!\n");
704  return GNUNET_SYSERR;
705  }
706 
707  return GNUNET_YES;
708 }
static struct GNUNET_TIME_Relative delay
When should dkg communication start?
const struct GNUNET_ShortHashCode * get_member_session_id(const struct GNUNET_MESSENGER_MemberSession *session)
Returns the member id of a given member session.
struct GNUNET_TIME_Relative GNUNET_TIME_relative_get_forever_(void)
Return "forever".
Definition: time.c:196
Time for relative time used by GNUnet, in microseconds.

References check_member_session_history(), delay, get_member_session_id(), get_srv_room_message_store(), get_srv_room_operation_store(), get_store_message(), GNUNET_assert, GNUNET_ERROR_TYPE_ERROR, GNUNET_ERROR_TYPE_INFO, GNUNET_ERROR_TYPE_WARNING, GNUNET_h2s(), GNUNET_log, GNUNET_memcmp, GNUNET_MESSENGER_OP_DELETE, GNUNET_NO, GNUNET_OK, GNUNET_sh2s(), GNUNET_SYSERR, GNUNET_TIME_relative_get_forever_(), GNUNET_YES, GNUNET_MESSENGER_OperationStore::room, and use_store_operation().

Referenced by handle_message_delete().

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◆ get_srv_room_cadet()

struct GNUNET_CADET_Handle* get_srv_room_cadet ( struct GNUNET_MESSENGER_SrvRoom room)

Returns the CADET handle from a rooms service.

Parameters
[in,out]roomRoom
Returns
CADET handle

Definition at line 711 of file gnunet-service-messenger_room.c.

712 {
713  GNUNET_assert(room);
714 
715  return room->service->cadet;
716 }
struct GNUNET_CADET_Handle * cadet

References GNUNET_MESSENGER_Service::cadet, GNUNET_assert, and GNUNET_MESSENGER_SrvRoom::service.

Referenced by connect_tunnel(), and open_srv_room().

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◆ get_srv_room_key()

const struct GNUNET_HashCode* get_srv_room_key ( const struct GNUNET_MESSENGER_SrvRoom room)

Returns the shared secret you need to access a room.

Parameters
[in]roomRoom
Returns
Shared secret

Definition at line 719 of file gnunet-service-messenger_room.c.

720 {
721  GNUNET_assert(room);
722 
723  return &(room->key);
724 }

References GNUNET_assert, and GNUNET_MESSENGER_SrvRoom::key.

Referenced by callback_room_connect(), connect_tunnel(), get_member_store_key(), get_room_data_subdir(), handle_message_join(), handle_message_leave(), join_room(), join_room_locally(), notify_srv_handle_message(), open_srv_room(), pack_srv_room_message(), send_message_id(), send_srv_room_message(), solve_srv_room_member_collisions(), and update_room_message().

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◆ get_srv_room_tunnel()

const struct GNUNET_MESSENGER_SrvTunnel* get_srv_room_tunnel ( const struct GNUNET_MESSENGER_SrvRoom room,
const struct GNUNET_PeerIdentity peer 
)

Returns a tunnel inside of a room leading towards a given peer if such a tunnel exists, otherwise NULL.

Parameters
[in]roomRoom
[in]peerPeer identity
Returns
Tunnel or NULL

Definition at line 727 of file gnunet-service-messenger_room.c.

729 {
730  GNUNET_assert((room) && (peer));
731 
733 }

References GNUNET_assert, GNUNET_CONTAINER_multipeermap_get(), peer, GNUNET_MESSENGER_SrvTunnel::room, and GNUNET_MESSENGER_SrvRoom::tunnels.

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◆ request_room_message_step()

static int request_room_message_step ( struct GNUNET_MESSENGER_SrvRoom room,
const struct GNUNET_HashCode hash,
const struct GNUNET_MESSENGER_MemberSession session,
GNUNET_MESSENGER_MessageRequestCallback  callback,
void *  cls 
)
static

Definition at line 736 of file gnunet-service-messenger_room.c.

741 {
742  struct GNUNET_MESSENGER_MessageStore *message_store = get_srv_room_message_store(room);
743 
745  message_store, hash, GNUNET_YES
746  );
747 
748  if (!link)
749  goto forward;
750 
751  int result = request_room_message_step(room, &(link->first), session, callback, cls);
752 
753  if ((GNUNET_YES == link->multiple) &&
754  (GNUNET_YES == request_room_message_step(room, &(link->second), session, callback, cls)))
755  return GNUNET_YES;
756  else
757  return result;
758 
759 forward:
760  if (GNUNET_YES != check_member_session_history(session, hash, GNUNET_NO))
761  return GNUNET_YES;
762 
763  const struct GNUNET_MESSENGER_Message *message = get_store_message(message_store, hash);
764 
765  if (!message)
766  return GNUNET_NO;
767 
768  if (callback)
769  callback (cls, room, message, hash);
770 
771  return GNUNET_YES;
772 }
static int forward
Search direction: forward.
Definition: gnunet-abd.c:162
static int result
Global testing status.
const struct GNUNET_MESSENGER_MessageLink * get_store_message_link(struct GNUNET_MESSENGER_MessageStore *store, const struct GNUNET_HashCode *hash, int deleted_only)
Returns the message link from a message store matching a given hash.
static int request_room_message_step(struct GNUNET_MESSENGER_SrvRoom *room, const struct GNUNET_HashCode *hash, const struct GNUNET_MESSENGER_MemberSession *session, GNUNET_MESSENGER_MessageRequestCallback callback, void *cls)

References check_member_session_history(), GNUNET_MESSENGER_MessageLink::first, forward, get_srv_room_message_store(), get_store_message(), get_store_message_link(), GNUNET_NO, GNUNET_YES, GNUNET_MESSENGER_MessageLink::multiple, result, and GNUNET_MESSENGER_MessageLink::second.

Referenced by request_srv_room_message().

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◆ request_srv_room_message()

int request_srv_room_message ( struct GNUNET_MESSENGER_SrvRoom room,
const struct GNUNET_HashCode hash,
const struct GNUNET_MESSENGER_MemberSession session,
GNUNET_MESSENGER_MessageRequestCallback  callback,
void *  cls 
)

Requests a message from a room identified by a given hash.

If the message is found, the selected callback will be called with it and the provided closure. If no matching message is found but it wasn't deleted the selected callback will be called with #NULL as message instead. In case of deletion the next available previous message will be used to call the callback.

It is also possible that the given callback will not be called if the requesting session is not permitted!

Parameters
[in,out]roomRoom
[in]hashHash of message
[in]callbackCallback to process result
[in]clsClosure for the callback
Returns
GNUNET_YES if the request could be processed, otherwise GNUNET_NO

Definition at line 775 of file gnunet-service-messenger_room.c.

780 {
781  GNUNET_assert((room) && (hash));
782 
783  int result = request_room_message_step (room, hash, session, callback, cls);
784 
785  if ((GNUNET_NO == result) && (callback))
786  callback (cls, room, NULL, hash);
787 
788  return result;
789 }

References GNUNET_assert, GNUNET_NO, request_room_message_step(), and result.

Referenced by handle_get_message(), and recv_message_request().

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◆ callback_room_disconnect()

void callback_room_disconnect ( struct GNUNET_MESSENGER_SrvRoom room,
void *  cls 
)

Definition at line 792 of file gnunet-service-messenger_room.c.

794 {
795  struct GNUNET_MESSENGER_SrvTunnel *tunnel = cls;
796 
797  if (!room->host)
798  return;
799 
802 
805  return;
806 
809 }
static struct GNUNET_IDENTITY_Handle * identity
Which namespace do we publish to? NULL if we do not publish to a namespace.
struct GNUNET_MESSENGER_Message * create_message_miss(const struct GNUNET_PeerIdentity *peer)
Creates and allocates a new miss message containing the missing peer identity.
void get_tunnel_peer_identity(const struct GNUNET_MESSENGER_SrvTunnel *tunnel, struct GNUNET_PeerIdentity *peer)
Writes the peer identity of the peer connected via tunnel to this peer into the peer parameter.
enum GNUNET_GenericReturnValue GNUNET_CONTAINER_multipeermap_contains(const struct GNUNET_CONTAINER_MultiPeerMap *map, const struct GNUNET_PeerIdentity *key)
Check if the map contains any value under the given key (including values that are NULL).
int contains_list_tunnels(struct GNUNET_MESSENGER_ListTunnels *tunnels, const struct GNUNET_PeerIdentity *peer)
Tests linearly if the list of tunnels peer identities contains a specific peer identity and returns G...

References GNUNET_MESSENGER_SrvRoom::basement, contains_list_tunnels(), create_message_miss(), get_tunnel_peer_identity(), GNUNET_CONTAINER_multipeermap_contains(), GNUNET_CONTAINER_multipeermap_remove(), GNUNET_YES, GNUNET_MESSENGER_SrvRoom::host, identity, GNUNET_MESSENGER_SrvTunnel::room, send_srv_room_message(), and GNUNET_MESSENGER_SrvRoom::tunnels.

Referenced by callback_tunnel_disconnect().

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◆ callback_verify_room_message()

int callback_verify_room_message ( struct GNUNET_MESSENGER_SrvRoom room,
void *  cls,
struct GNUNET_MESSENGER_Message message,
struct GNUNET_HashCode hash 
)

Definition at line 812 of file gnunet-service-messenger_room.c.

816 {
817  if (GNUNET_MESSENGER_KIND_UNKNOWN == message->header.kind)
818  {
819  GNUNET_log(GNUNET_ERROR_TYPE_ERROR, "Message error: Kind is unknown! (%d)\n", message->header.kind);
820  return GNUNET_SYSERR;
821  }
822 
823  struct GNUNET_MESSENGER_MessageStore *message_store = get_srv_room_message_store(room);
824 
825  const struct GNUNET_MESSENGER_Message *previous = get_store_message(message_store, &(message->header.previous));
826 
827  if (!previous)
828  goto skip_time_comparison;
829 
830  struct GNUNET_TIME_Absolute timestamp = GNUNET_TIME_absolute_ntoh(message->header.timestamp);
832 
833  if (GNUNET_TIME_relative_get_zero_().rel_value_us != GNUNET_TIME_absolute_get_difference(timestamp, last).rel_value_us)
834  {
835  GNUNET_log(GNUNET_ERROR_TYPE_ERROR, "Message error: Timestamp does not check out!\n");
836  return GNUNET_SYSERR;
837  }
838 
839 skip_time_comparison:
840  GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Receiving message of kind: %s!\n",
842 
843  return GNUNET_OK;
844 }
struct GNUNET_TIME_Relative GNUNET_TIME_relative_get_zero_(void)
Return relative time of 0ms.
Definition: time.c:133
struct GNUNET_TIME_Absolute GNUNET_TIME_absolute_ntoh(struct GNUNET_TIME_AbsoluteNBO a)
Convert absolute time from network byte order.
Definition: time.c:737
struct GNUNET_TIME_Relative GNUNET_TIME_absolute_get_difference(struct GNUNET_TIME_Absolute start, struct GNUNET_TIME_Absolute end)
Compute the time difference between the given start and end times.
Definition: time.c:421
Time for absolute times used by GNUnet, in microseconds.

References get_srv_room_message_store(), get_store_message(), GNUNET_ERROR_TYPE_DEBUG, GNUNET_ERROR_TYPE_ERROR, GNUNET_log, GNUNET_MESSENGER_KIND_UNKNOWN, GNUNET_MESSENGER_name_of_kind(), GNUNET_OK, GNUNET_SYSERR, GNUNET_TIME_absolute_get_difference(), GNUNET_TIME_absolute_ntoh(), GNUNET_TIME_relative_get_zero_(), GNUNET_MESSENGER_Message::header, GNUNET_MESSENGER_MessageHeader::kind, GNUNET_MESSENGER_MessageHeader::previous, and GNUNET_MESSENGER_MessageHeader::timestamp.

Referenced by check_tunnel_message().

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◆ solve_srv_room_member_collisions()

void solve_srv_room_member_collisions ( struct GNUNET_MESSENGER_SrvRoom room,
const struct GNUNET_IDENTITY_PublicKey public_key,
const struct GNUNET_ShortHashCode member_id,
struct GNUNET_TIME_Absolute  timestamp 
)

Checks for potential collisions with member ids and solves them changing active handles ids if they use an already used member id (comparing public key and timestamp).

Parameters
[in,out]roomRoom
[in]public_keyPublic key of EGO
[in]member_idMember ID
[in]timestampTimestamp

Definition at line 874 of file gnunet-service-messenger_room.c.

878 {
879  GNUNET_assert ((room) && (public_key) && (member_id));
880 
882  struct GNUNET_MESSENGER_Member *member = get_store_member(member_store, member_id);
883 
884  if ((!member) || (1 >= GNUNET_CONTAINER_multihashmap_size(member->sessions)))
885  return;
886 
887  struct GNUNET_MESSENGER_ListHandles *handles = &(room->service->handles);
888  struct GNUNET_MESSENGER_ListHandle* element;
889 
890  for (element = handles->head; element; element = element->next)
891  {
892  if (0 != GNUNET_memcmp(member_id, get_srv_handle_member_id(element->handle, get_srv_room_key(room))))
893  continue;
894 
895  if (0 == GNUNET_memcmp(public_key, &(get_srv_handle_ego(element->handle)->pub)))
896  continue;
897 
899 
900  if (!session)
901  continue;
902 
904 
905  if (GNUNET_TIME_relative_get_zero_().rel_value_us != GNUNET_TIME_absolute_get_difference(start, timestamp).rel_value_us)
906  continue;
907 
908  struct GNUNET_ShortHashCode random_id;
909  generate_free_member_id (&random_id, member_store->members);
910 
911  send_srv_room_message(room, element->handle, create_message_id(&random_id));
912  }
913 }
static int start
Set if we are to start default services (including ARM).
Definition: gnunet-arm.c:39
struct GNUNET_TIME_Absolute get_member_session_start(const struct GNUNET_MESSENGER_MemberSession *session)
Returns the timestamp of the member session's start.
struct GNUNET_MESSENGER_Member * get_store_member(const struct GNUNET_MESSENGER_MemberStore *store, const struct GNUNET_ShortHashCode *id)
Returns the member in a store identified by a given id.
struct GNUNET_MESSENGER_Message * create_message_id(const struct GNUNET_ShortHashCode *unique_id)
Creates and allocates a new id message containing the unique member id to change to.
unsigned int GNUNET_CONTAINER_multihashmap_size(const struct GNUNET_CONTAINER_MultiHashMap *map)
Get the number of key-value pairs in the map.
int generate_free_member_id(struct GNUNET_ShortHashCode *id, const struct GNUNET_CONTAINER_MultiShortmap *members)
Tries to generate an unused member id and store it into the id parameter.
struct GNUNET_MESSENGER_ListHandle * next
struct GNUNET_MESSENGER_SrvHandle * handle
struct GNUNET_MESSENGER_ListHandle * head
struct GNUNET_CONTAINER_MultiShortmap * members
struct GNUNET_CONTAINER_MultiHashMap * sessions
struct GNUNET_MESSENGER_ListHandles handles

References create_message_id(), generate_free_member_id(), get_member_session(), get_member_session_start(), get_srv_handle_ego(), get_srv_handle_member_id(), get_srv_room_key(), get_srv_room_member_store(), get_store_member(), GNUNET_assert, GNUNET_CONTAINER_multihashmap_size(), GNUNET_memcmp, GNUNET_TIME_absolute_get_difference(), GNUNET_TIME_relative_get_zero_(), GNUNET_MESSENGER_ListHandle::handle, GNUNET_MESSENGER_Service::handles, GNUNET_MESSENGER_ListHandles::head, GNUNET_MESSENGER_MemberSession::member, GNUNET_MESSENGER_MemberStore::members, GNUNET_MESSENGER_ListHandle::next, GNUNET_MESSENGER_Ego::pub, GNUNET_MESSENGER_MemberStore::room, send_srv_room_message(), GNUNET_MESSENGER_SrvRoom::service, GNUNET_MESSENGER_Member::sessions, and start.

Referenced by handle_message_id(), and handle_message_join().

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◆ rebuild_srv_room_basement_structure()

void rebuild_srv_room_basement_structure ( struct GNUNET_MESSENGER_SrvRoom room)

Rebuilds the decentralized structure for a room by ensuring all required connections are made depending on the amount of peers and this peers index in the list of them.

Parameters
[in,out]roomRoom

Definition at line 916 of file gnunet-service-messenger_room.c.

917 {
918  GNUNET_assert(room);
919 
920  struct GNUNET_PeerIdentity peer;
921  size_t src;
922 
923  if ((GNUNET_OK != get_service_peer_identity (room->service, &peer)) ||
924  (!find_list_tunnels (&(room->basement), &peer, &src)))
925  return;
926 
927  size_t count = count_of_tunnels (&(room->basement));
928 
929  struct GNUNET_MESSENGER_ListTunnel *element = room->basement.head;
930  struct GNUNET_MESSENGER_SrvTunnel *tunnel;
931 
932  size_t dst = 0;
933 
934  while (element)
935  {
936  GNUNET_PEER_resolve (element->peer, &peer);
937 
939 
940  if (!tunnel)
941  {
942  element = remove_from_list_tunnels (&(room->basement), element);
943  continue;
944  }
945 
946  if (GNUNET_YES == required_connection_between (count, src, dst))
947  {
948  if (GNUNET_SYSERR == connect_tunnel (tunnel))
949  {
950  element = remove_from_list_tunnels (&(room->basement), element);
951  continue;
952  }
953  }
954  else
955  disconnect_tunnel (tunnel);
956 
957  element = element->next;
958  dst++;
959  }
960 }
int required_connection_between(size_t count, size_t src, size_t dst)
Returns GNUNET_YES or GNUNET_NO to determine if the peers of index src and index dst should be connec...
size_t count_of_tunnels(const struct GNUNET_MESSENGER_ListTunnels *tunnels)
Returns the count of peers in a list (typically from the basement of a room).
void GNUNET_PEER_resolve(GNUNET_PEER_Id id, struct GNUNET_PeerIdentity *pid)
Convert an interned PID to a normal peer identity.
Definition: peer.c:220
struct GNUNET_MESSENGER_ListTunnel * remove_from_list_tunnels(struct GNUNET_MESSENGER_ListTunnels *tunnels, struct GNUNET_MESSENGER_ListTunnel *element)
Removes a specific element from the list of tunnels peer identities and returns the next element in t...
struct GNUNET_MESSENGER_ListTunnel * find_list_tunnels(struct GNUNET_MESSENGER_ListTunnels *tunnels, const struct GNUNET_PeerIdentity *peer, size_t *index)
Searches linearly through the list of tunnels peer identities for matching a specific peer identity a...
struct GNUNET_MESSENGER_ListTunnel * next
struct GNUNET_MESSENGER_ListTunnel * head

References GNUNET_MESSENGER_SrvRoom::basement, connect_tunnel(), count_of_tunnels(), disconnect_tunnel(), find_list_tunnels(), get_service_peer_identity(), GNUNET_assert, GNUNET_CONTAINER_multipeermap_get(), GNUNET_OK, GNUNET_PEER_resolve(), GNUNET_SYSERR, GNUNET_YES, GNUNET_MESSENGER_ListTunnels::head, GNUNET_MESSENGER_ListTunnel::next, GNUNET_MESSENGER_ListTunnel::peer, peer, remove_from_list_tunnels(), required_connection_between(), GNUNET_MESSENGER_SrvTunnel::room, GNUNET_MESSENGER_SrvRoom::service, and GNUNET_MESSENGER_SrvRoom::tunnels.

Referenced by handle_message_miss(), and handle_message_peer().

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◆ iterate_update_member_sessions()

static int iterate_update_member_sessions ( void *  cls,
const struct GNUNET_IDENTITY_PublicKey public_key,
struct GNUNET_MESSENGER_MemberSession session 
)
static

Definition at line 1059 of file gnunet-service-messenger_room.c.

1062 {
1063  struct GNUNET_MESSENGER_MemberUpdate *update = cls;
1064 
1065  update_member_session_history(session, update->message, update->hash);
1066 
1067  if (GNUNET_YES == is_member_session_completed(session))
1068  {
1071  );
1072 
1073  element->session = session;
1074 
1075  GNUNET_CONTAINER_DLL_insert_tail(update->head, update->tail, element);
1076  }
1077 
1078  return GNUNET_YES;
1079 }
void update_member_session_history(struct GNUNET_MESSENGER_MemberSession *session, const struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash)
Adds a given message to the history of a session using the messages hash.
#define GNUNET_CONTAINER_DLL_insert_tail(head, tail, element)
Insert an element at the tail of a DLL.
struct GNUNET_MESSENGER_MemberSessionCompletion * head
struct GNUNET_MESSENGER_MemberSessionCompletion * tail

References GNUNET_CONTAINER_DLL_insert_tail, GNUNET_new, GNUNET_YES, GNUNET_MESSENGER_MemberUpdate::hash, GNUNET_MESSENGER_MemberUpdate::head, is_member_session_completed(), GNUNET_MESSENGER_MemberUpdate::message, GNUNET_MESSENGER_MemberSessionCompletion::session, GNUNET_MESSENGER_MemberUpdate::tail, and update_member_session_history().

Referenced by callback_room_handle_message().

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◆ remove_room_member_session()

static void remove_room_member_session ( struct GNUNET_MESSENGER_SrvRoom room,
struct GNUNET_MESSENGER_MemberSession session 
)
static

Definition at line 1244 of file gnunet-service-messenger_room.c.

1246 {
1247  GNUNET_assert ((room) && (session));
1248 
1249  remove_member_session (session->member, session);
1250 
1251  const struct GNUNET_IDENTITY_PublicKey *public_key = get_member_session_public_key(session);
1252 
1253  struct GNUNET_HashCode hash;
1254  GNUNET_CRYPTO_hash(public_key, sizeof(*public_key), &hash);
1255 
1256  char *room_dir;
1257  get_room_data_subdir (room, &room_dir);
1258 
1259  char* session_dir;
1260  GNUNET_asprintf (
1261  &session_dir, "%s%s%c%s%c%s%c%s%c", room_dir,
1262  "members", DIR_SEPARATOR,
1264  "sessions", DIR_SEPARATOR,
1265  GNUNET_h2s(&hash), DIR_SEPARATOR
1266  );
1267 
1268  GNUNET_free (room_dir);
1269 
1270  GNUNET_DISK_directory_remove(session_dir);
1271  GNUNET_free (session_dir);
1272 
1273  destroy_member_session(session);
1274 }
void remove_member_session(struct GNUNET_MESSENGER_Member *member, struct GNUNET_MESSENGER_MemberSession *session)
Removes a given member session from its member.
void destroy_member_session(struct GNUNET_MESSENGER_MemberSession *session)
Destroys a member session and frees its memory fully.
const struct GNUNET_IDENTITY_PublicKey * get_member_session_public_key(const struct GNUNET_MESSENGER_MemberSession *session)
Returns the public key from an EGO of a given member session.
static void get_room_data_subdir(struct GNUNET_MESSENGER_SrvRoom *room, char **dir)
enum GNUNET_GenericReturnValue GNUNET_DISK_directory_remove(const char *filename)
Remove all files in a directory (rm -rf).
Definition: disk.c:1084
void GNUNET_CRYPTO_hash(const void *block, size_t size, struct GNUNET_HashCode *ret)
Compute hash of a given block.
Definition: crypto_hash.c:41
int int GNUNET_asprintf(char **buf, const char *format,...) __attribute__((format(printf
Like asprintf, just portable.
#define DIR_SEPARATOR
Definition: platform.h:164
An identity key as per LSD0001.

References destroy_member_session(), DIR_SEPARATOR, get_member_session_id(), get_member_session_public_key(), get_room_data_subdir(), GNUNET_asprintf(), GNUNET_assert, GNUNET_CRYPTO_hash(), GNUNET_DISK_directory_remove(), GNUNET_free, GNUNET_h2s(), GNUNET_sh2s(), GNUNET_MESSENGER_MemberSession::member, remove_member_session(), and GNUNET_MESSENGER_MemberSessionCompletion::session.

Referenced by callback_room_handle_message().

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◆ get_room_data_subdir()

static void get_room_data_subdir ( struct GNUNET_MESSENGER_SrvRoom room,
char **  dir 
)
static

Definition at line 1168 of file gnunet-service-messenger_room.c.

1170 {
1171  GNUNET_assert((room) && (dir));
1172 
1173  GNUNET_asprintf (dir, "%s%s%c%s%c", room->service->dir, "rooms", DIR_SEPARATOR, GNUNET_h2s (get_srv_room_key(room)), DIR_SEPARATOR);
1174 }
static char * dir
Set to the directory where runtime files are stored.
Definition: gnunet-arm.c:89

References dir, GNUNET_MESSENGER_Service::dir, DIR_SEPARATOR, get_srv_room_key(), GNUNET_asprintf(), GNUNET_assert, GNUNET_h2s(), and GNUNET_MESSENGER_SrvRoom::service.

Referenced by load_srv_room(), remove_room_member_session(), remove_srv_room(), and save_srv_room().

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◆ load_srv_room()

void load_srv_room ( struct GNUNET_MESSENGER_SrvRoom room)

Loads the local configuration for a given room of a service which contains the last messages hash and the ruleset for general access of new members.

Parameters
[out]roomRoom

Definition at line 1177 of file gnunet-service-messenger_room.c.

1178 {
1179  GNUNET_assert(room);
1180 
1181  char *room_dir;
1182  get_room_data_subdir (room, &room_dir);
1183 
1185  {
1186  load_member_store (get_srv_room_member_store(room), room_dir);
1189 
1190  char *basement_file;
1191  GNUNET_asprintf (&basement_file, "%s%s", room_dir, "basement.list");
1192 
1193  load_list_tunnels(&(room->basement), basement_file);
1194  GNUNET_free(basement_file);
1195 
1196  load_message_state(&(room->state), room_dir);
1197  }
1198 
1199  GNUNET_free(room_dir);
1200 }
void load_member_store(struct GNUNET_MESSENGER_MemberStore *store, const char *directory)
Loads members from a directory into a member store.
void load_message_state(struct GNUNET_MESSENGER_MessageState *state, const char *path)
void load_message_store(struct GNUNET_MESSENGER_MessageStore *store, const char *directory)
Loads messages from a directory into a message store.
void load_operation_store(struct GNUNET_MESSENGER_OperationStore *store, const char *directory)
Loads operations from a directory into an operation store.
enum GNUNET_GenericReturnValue GNUNET_DISK_directory_test(const char *fil, int is_readable)
Test if fil is a directory and listable.
Definition: disk.c:403
void load_list_tunnels(struct GNUNET_MESSENGER_ListTunnels *tunnels, const char *path)
Loads the list of tunnels peer identities from a file under a given path.

References GNUNET_MESSENGER_SrvRoom::basement, get_room_data_subdir(), get_srv_room_member_store(), get_srv_room_message_store(), get_srv_room_operation_store(), GNUNET_asprintf(), GNUNET_assert, GNUNET_DISK_directory_test(), GNUNET_free, GNUNET_YES, load_list_tunnels(), load_member_store(), load_message_state(), load_message_store(), load_operation_store(), and GNUNET_MESSENGER_SrvRoom::state.

Referenced by create_srv_room().

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◆ save_srv_room()

void save_srv_room ( struct GNUNET_MESSENGER_SrvRoom room)

Saves the configuration for a given room of a service which contains the last messages hash and the ruleset for general access of new members locally.

Parameters
[in]roomRoom

Definition at line 1203 of file gnunet-service-messenger_room.c.

1204 {
1205  GNUNET_assert(room);
1206 
1207  char *room_dir;
1208  get_room_data_subdir (room, &room_dir);
1209 
1210  if ((GNUNET_YES == GNUNET_DISK_directory_test (room_dir, GNUNET_NO)) ||
1211  (GNUNET_OK == GNUNET_DISK_directory_create (room_dir)))
1212  {
1216 
1217  char *basement_file;
1218  GNUNET_asprintf (&basement_file, "%s%s", room_dir, "basement.list");
1219 
1220  save_list_tunnels(&(room->basement), basement_file);
1221  GNUNET_free(basement_file);
1222 
1223  save_message_state(&(room->state), room_dir);
1224  }
1225 
1226  GNUNET_free(room_dir);
1227 }
void save_member_store(struct GNUNET_MESSENGER_MemberStore *store, const char *directory)
Saves members from a member store into a directory.
void save_message_state(const struct GNUNET_MESSENGER_MessageState *state, const char *path)
void save_message_store(struct GNUNET_MESSENGER_MessageStore *store, const char *directory)
Saves messages from a message store into a directory.
void save_operation_store(const struct GNUNET_MESSENGER_OperationStore *store, const char *directory)
Saves operations from an operation store into a directory.
enum GNUNET_GenericReturnValue GNUNET_DISK_directory_create(const char *dir)
Implementation of "mkdir -p".
Definition: disk.c:495
void save_list_tunnels(struct GNUNET_MESSENGER_ListTunnels *tunnels, const char *path)
Saves the list of tunnels peer identities to a file under a given path.

References GNUNET_MESSENGER_SrvRoom::basement, get_room_data_subdir(), get_srv_room_member_store(), get_srv_room_message_store(), get_srv_room_operation_store(), GNUNET_asprintf(), GNUNET_assert, GNUNET_DISK_directory_create(), GNUNET_DISK_directory_test(), GNUNET_free, GNUNET_NO, GNUNET_OK, GNUNET_YES, save_list_tunnels(), save_member_store(), save_message_state(), save_message_store(), save_operation_store(), and GNUNET_MESSENGER_SrvRoom::state.

Referenced by destroy_srv_room().

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◆ remove_srv_room()

void remove_srv_room ( struct GNUNET_MESSENGER_SrvRoom room)

Removes the configuration for a given room of a service.

Parameters
[in]roomRoom

Definition at line 1230 of file gnunet-service-messenger_room.c.

1231 {
1232  GNUNET_assert(room);
1233 
1234  char *room_dir;
1235  get_room_data_subdir (room, &room_dir);
1236 
1238  GNUNET_DISK_directory_remove(room_dir);
1239 
1240  GNUNET_free(room_dir);
1241 }

References get_room_data_subdir(), GNUNET_assert, GNUNET_DISK_directory_remove(), GNUNET_DISK_directory_test(), GNUNET_free, and GNUNET_YES.

Referenced by destroy_srv_room().

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