GNUnet 0.22.0
gnunet-service-messenger_room.c File Reference
Include dependency graph for gnunet-service-messenger_room.c:

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Data Structures

struct  GNUNET_MESSENGER_ClosureSendRoom
 
struct  GNUNET_MESSENGER_MemberSubscriptionIteration
 
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 enum GNUNET_GenericReturnValue iterate_destroy_tunnels (void *cls, const struct GNUNET_PeerIdentity *key, void *value)
 
static void close_srv_room (struct GNUNET_MESSENGER_SrvRoom *room)
 
static void handle_room_messages (struct GNUNET_MESSENGER_SrvRoom *room)
 
void destroy_srv_room (struct GNUNET_MESSENGER_SrvRoom *room, enum GNUNET_GenericReturnValue deletion)
 Destroys a room and frees its memory fully. More...
 
struct GNUNET_MESSENGER_PeerStoreget_srv_room_peer_store (struct GNUNET_MESSENGER_SrvRoom *room)
 Returns the used peer store of a given room. 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 enum GNUNET_GenericReturnValue 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 enum GNUNET_GenericReturnValue join_room (struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvHandle *handle, struct GNUNET_MESSENGER_Member *member, const struct GNUNET_ShortHashCode *id)
 
static enum GNUNET_GenericReturnValue join_room_locally (struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvHandle *handle)
 
enum GNUNET_GenericReturnValue open_srv_room (struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvHandle *handle)
 Tries to open a room for a given handle. More...
 
enum GNUNET_GenericReturnValue 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...
 
static void sign_srv_room_message_by_peer (const void *cls, struct GNUNET_MESSENGER_Message *message, uint16_t length, char *buffer, const struct GNUNET_HashCode *hash)
 
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, enum GNUNET_MESSENGER_PackMode mode)
 Packs a message depending on the selected mode into a newly allocated envelope. More...
 
static enum GNUNET_GenericReturnValue iterate_send_room_message (void *cls, const struct GNUNET_PeerIdentity *key, void *value)
 
enum GNUNET_GenericReturnValue 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, const struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash)
 
enum GNUNET_GenericReturnValue 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...
 
enum GNUNET_GenericReturnValue 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 enum GNUNET_GenericReturnValue 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)
 
enum GNUNET_GenericReturnValue 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 solve_srv_room_member_collisions (struct GNUNET_MESSENGER_SrvRoom *room, const struct GNUNET_CRYPTO_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...
 
uint32_t get_srv_room_amount_of_tunnels (const struct GNUNET_MESSENGER_SrvRoom *room)
 Returns the amount of active tunnels of a given room. More...
 
uint32_t get_srv_room_connection_flags (const struct GNUNET_MESSENGER_SrvRoom *room)
 Returns connection flags about connection information of a given room and the service managing it. More...
 
static enum GNUNET_GenericReturnValue iterate_member_for_subscription (void *cls, const struct GNUNET_CRYPTO_PublicKey *public_key, struct GNUNET_MESSENGER_MemberSession *session)
 
void cleanup_srv_room_discourse_messages (struct GNUNET_MESSENGER_SrvRoom *room, const struct GNUNET_ShortHashCode *discourse)
 Cleanup discourse messages outside of current subscriptions from a specific discourse of all the members in a given room. More...
 
static enum GNUNET_GenericReturnValue iterate_update_member_sessions (void *cls, const struct GNUNET_CRYPTO_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...
 

Function Documentation

◆ idle_request_room_messages()

static void idle_request_room_messages ( void *  cls)
static

Definition at line 898 of file gnunet-service-messenger_room.c.

899{
900 struct GNUNET_MESSENGER_SrvRoom *room;
901 struct GNUNET_MESSENGER_OperationStore *operation_store;
902 const struct GNUNET_HashCode *hash;
903
904 GNUNET_assert (cls);
905
906 room = cls;
907 room->idle = NULL;
908
909 operation_store = get_srv_room_operation_store (room);
910 hash = get_message_state_merge_hash (&(room->state));
911
912 if ((hash) &&
914 hash)))
916 operation_store,
917 hash,
920 );
921
926 cls
927 );
928}
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.
enum GNUNET_GenericReturnValue 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.
static void idle_request_room_messages(void *cls)
struct GNUNET_MESSENGER_OperationStore * get_srv_room_operation_store(struct GNUNET_MESSENGER_SrvRoom *room)
Returns the used operation store of a given room.
#define GNUNET_MESSENGER_MERGE_DELAY
#define GNUNET_MESSENGER_IDLE_DELAY
@ GNUNET_SCHEDULER_PRIORITY_IDLE
Run when otherwise idle.
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
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:1206
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_assert, 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, idle_request_room_messages(), GNUNET_MESSENGER_SrvRoom::state, and use_store_operation().

Referenced by create_srv_room(), and idle_request_room_messages().

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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 46 of file gnunet-service-messenger_room.c.

48{
49 struct GNUNET_MESSENGER_SrvRoom *room;
50
51 GNUNET_assert ((handle) && (key));
52
54
55 room->service = handle->service;
56 room->host = handle;
57 room->port = NULL;
58
59 GNUNET_memcpy (&(room->key), key, sizeof(struct GNUNET_HashCode));
60
62
67
68 init_list_tunnels (&(room->basement));
69 init_message_state (&(room->state));
70
71 room->peer_message = NULL;
72
74 room->idle = NULL;
75
76 if (room->service->dir)
77 load_srv_room (room);
78
81
82 return room;
83}
struct GNUNET_HashCode key
The key used in the DHT.
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.
void init_peer_store(struct GNUNET_MESSENGER_PeerStore *store, struct GNUNET_MESSENGER_Service *service)
Initializes a peer store as fully empty.
struct GNUNET_MESSENGER_MessageStore * get_srv_room_message_store(struct GNUNET_MESSENGER_SrvRoom *room)
Returns the used message store of a given room.
struct GNUNET_MESSENGER_PeerStore * get_srv_room_peer_store(struct GNUNET_MESSENGER_SrvRoom *room)
Returns the used peer store of 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.
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...
static struct GNUNET_VPN_Handle * handle
Handle to vpn service.
Definition: gnunet-vpn.c:35
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_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:1230
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(), get_srv_room_peer_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(), init_peer_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 enum GNUNET_GenericReturnValue iterate_destroy_tunnels ( void *  cls,
const struct GNUNET_PeerIdentity key,
void *  value 
)
static

Definition at line 87 of file gnunet-service-messenger_room.c.

90{
91 struct GNUNET_MESSENGER_SrvTunnel *tunnel;
92
94
95 tunnel = value;
96
97 destroy_tunnel (tunnel);
98 return GNUNET_YES;
99}
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_assert, GNUNET_YES, and value.

Referenced by destroy_srv_room().

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◆ close_srv_room()

static void close_srv_room ( struct GNUNET_MESSENGER_SrvRoom room)
static

Definition at line 390 of file gnunet-service-messenger_room.c.

391{
392 struct GNUNET_PeerIdentity peer;
393
394 GNUNET_assert (room);
395
396 if (! room->port)
397 return;
398
399 if ((room->peer_message) &&
400 (GNUNET_OK == get_service_peer_identity (room->service, &peer)))
401 send_srv_room_message (room, room->host, create_message_miss (&peer));
402
404 room->port = NULL;
405}
struct GNUNET_MESSENGER_Message * create_message_miss(const struct GNUNET_PeerIdentity *peer)
Creates and allocates a new miss message containing the missing peer identity.
enum GNUNET_GenericReturnValue 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.
enum GNUNET_GenericReturnValue get_service_peer_identity(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.
void GNUNET_CADET_close_port(struct GNUNET_CADET_Port *p)
Close a port opened with GNUNET_CADET_open_port.
Definition: cadet_api.c:801
@ GNUNET_OK
The identity of the host (wraps the signing key of the peer).

References create_message_miss(), get_service_peer_identity(), GNUNET_assert, GNUNET_CADET_close_port(), GNUNET_OK, GNUNET_MESSENGER_SrvRoom::host, GNUNET_MESSENGER_SrvRoom::peer_message, GNUNET_MESSENGER_SrvRoom::port, send_srv_room_message(), and GNUNET_MESSENGER_SrvRoom::service.

Referenced by destroy_srv_room(), open_srv_room(), and rebuild_srv_room_basement_structure().

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◆ handle_room_messages()

static void handle_room_messages ( struct GNUNET_MESSENGER_SrvRoom room)
static

Definition at line 1081 of file gnunet-service-messenger_room.c.

1082{
1083 struct GNUNET_MESSENGER_MessageStore *message_store;
1084 struct GNUNET_MESSENGER_MemberStore *member_store;
1085 struct GNUNET_MESSENGER_PeerStore *peer_store;
1086 const struct GNUNET_HashCode *key;
1087
1088 message_store = get_srv_room_message_store (room);
1089 member_store = get_srv_room_member_store (room);
1090 peer_store = get_srv_room_peer_store (room);
1091
1092 key = get_srv_room_key (room);
1093
1095 "Handling room messages: %s\n", GNUNET_h2s (key));
1096
1097 while (room->handling.head)
1098 {
1099 struct GNUNET_MESSENGER_ListMessage *element;
1100 struct GNUNET_MESSENGER_SenderSession session;
1101 const struct GNUNET_MESSENGER_Message *message;
1102
1103 element = room->handling.head;
1104 message = get_store_message (
1105 message_store, &(element->hash));
1106
1107 if (! message)
1108 goto finish_handling;
1109
1110 if (GNUNET_YES == is_peer_message (message))
1111 {
1112 session.peer = get_store_peer_of (peer_store, message, &(element->hash));
1113
1114 if (! session.peer)
1115 goto finish_handling;
1116 }
1117 else
1118 {
1119 struct GNUNET_MESSENGER_Member *member;
1120
1121 member = get_store_member_of (member_store, message);
1122
1123 if (! member)
1124 goto finish_handling;
1125
1126 session.member = get_member_session_of (member, message,
1127 &(element->hash));
1128
1129 if (! session.member)
1130 goto finish_handling;
1131 }
1132
1133 handle_service_message (room->service, room, &session, message,
1134 &(element->hash));
1135
1136finish_handling:
1138 element);
1139 GNUNET_free (element);
1140 }
1141}
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.
struct GNUNET_PeerIdentity * get_store_peer_of(struct GNUNET_MESSENGER_PeerStore *store, const struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash)
Returns the peer identity inside the store which verifies the signature of a given message as valid.
const struct GNUNET_HashCode * get_srv_room_key(const struct GNUNET_MESSENGER_SrvRoom *room)
Returns the shared secret you need to access a room.
void handle_service_message(struct GNUNET_MESSENGER_Service *service, struct GNUNET_MESSENGER_SrvRoom *room, const struct GNUNET_MESSENGER_SenderSession *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_log(kind,...)
const char * GNUNET_h2s(const struct GNUNET_HashCode *hc)
Convert a hash value to a string (for printing debug messages).
@ GNUNET_ERROR_TYPE_DEBUG
#define GNUNET_free(ptr)
Wrapper around free.
enum GNUNET_GenericReturnValue is_peer_message(const struct GNUNET_MESSENGER_Message *message)
Returns whether a specific kind of message can be sent by the service without usage of a clients priv...
struct GNUNET_MESSENGER_ListMessage * head
struct GNUNET_MESSENGER_ListMessage * tail

References get_member_session_of(), get_srv_room_key(), get_srv_room_member_store(), get_srv_room_message_store(), get_srv_room_peer_store(), get_store_member_of(), get_store_message(), get_store_peer_of(), GNUNET_CONTAINER_DLL_remove, GNUNET_ERROR_TYPE_DEBUG, GNUNET_free, GNUNET_h2s(), GNUNET_log, GNUNET_YES, handle_service_message(), GNUNET_MESSENGER_SrvRoom::handling, GNUNET_MESSENGER_ListMessage::hash, GNUNET_MESSENGER_ListMessages::head, is_peer_message(), key, GNUNET_MESSENGER_SenderSession::member, GNUNET_MESSENGER_SenderSession::peer, 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,
enum GNUNET_GenericReturnValue  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 109 of file gnunet-service-messenger_room.c.

111{
112 GNUNET_assert (room);
113
114 if (room->idle)
115 {
117 room->idle = NULL;
118 }
119
120 close_srv_room (room);
121
123 NULL);
125
126 if (! (room->service->dir))
127 goto skip_saving;
128
129 if (GNUNET_YES == deletion)
130 remove_srv_room (room);
131 else
132 save_srv_room (room);
133
134skip_saving:
139
141 clear_list_tunnels (&(room->basement));
142 clear_message_state (&(room->state));
143
144 if (room->peer_message)
146
147 GNUNET_free (room);
148}
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 clear_peer_store(struct GNUNET_MESSENGER_PeerStore *store)
Clears a peer store, wipes its content and deallocates its memory.
static enum GNUNET_GenericReturnValue iterate_destroy_tunnels(void *cls, const struct GNUNET_PeerIdentity *key, void *value)
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 void handle_room_messages(struct GNUNET_MESSENGER_SrvRoom *room)
static void close_srv_room(struct GNUNET_MESSENGER_SrvRoom *room)
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:979
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(), clear_peer_store(), close_srv_room(), GNUNET_MESSENGER_Service::dir, get_srv_room_member_store(), get_srv_room_message_store(), get_srv_room_operation_store(), get_srv_room_peer_store(), GNUNET_assert, 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, 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_peer_store()

struct GNUNET_MESSENGER_PeerStore * get_srv_room_peer_store ( struct GNUNET_MESSENGER_SrvRoom room)

Returns the used peer store of a given room.

Parameters
[in,out]roomRoom
Returns
Peer store

Definition at line 152 of file gnunet-service-messenger_room.c.

153{
154 GNUNET_assert (room);
155
156 return &(room->peer_store);
157}
struct GNUNET_MESSENGER_PeerStore peer_store

References GNUNET_assert, and GNUNET_MESSENGER_SrvRoom::peer_store.

Referenced by callback_found_message(), callback_room_handle_message(), create_srv_room(), destroy_srv_room(), handle_message_miss(), handle_message_peer(), handle_room_messages(), load_srv_room(), and save_srv_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 161 of file gnunet-service-messenger_room.c.

162{
163 GNUNET_assert (room);
164
165 return &(room->member_store);
166}
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(), cleanup_srv_room_discourse_messages(), create_srv_room(), destroy_srv_room(), get_handle_member_session(), handle_get_message(), handle_room_messages(), initialize_service_handle(), join_room_locally(), load_srv_room(), notify_srv_handle_message(), open_srv_room(), recv_message_info(), recv_message_request(), save_srv_room(), send_message_join(), 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 170 of file gnunet-service-messenger_room.c.

171{
172 GNUNET_assert (room);
173
174 return &(room->message_store);
175}
struct GNUNET_MESSENGER_MessageStore message_store

References GNUNET_assert, and GNUNET_MESSENGER_SrvRoom::message_store.

Referenced by callback_operation(), check_member_session_completion(), check_srv_room_peer_status(), cleanup_srv_room_discourse_messages(), create_srv_room(), delete_srv_room_message(), destroy_srv_room(), forward_about_members(), handle_room_messages(), load_srv_room(), notify_about_members(), recv_message_info(), request_room_message_step(), save_srv_room(), update_room_message(), update_tunnel_last_message(), and verify_tunnel_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 179 of file gnunet-service-messenger_room.c.

180{
181 GNUNET_assert (room);
182
183 return &(room->operation_store);
184}
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 enum GNUNET_GenericReturnValue send_room_info ( struct GNUNET_MESSENGER_SrvRoom room,
struct GNUNET_MESSENGER_SrvHandle handle,
struct GNUNET_MESSENGER_SrvTunnel tunnel 
)
static

Definition at line 188 of file gnunet-service-messenger_room.c.

191{
192 if ((! handle) || (! is_tunnel_connected (tunnel)))
193 return GNUNET_NO;
194
196 room->service));
197}
struct GNUNET_MESSENGER_Message * create_message_info(struct GNUNET_MESSENGER_Service *service)
Creates and allocates a new info message containing the hosts service peer identity and version.
enum GNUNET_GenericReturnValue is_tunnel_connected(const struct GNUNET_MESSENGER_SrvTunnel *tunnel)
Returns the status of a currently bound channel of a tunnel.
enum GNUNET_GenericReturnValue 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.

References create_message_info(), GNUNET_NO, handle, is_tunnel_connected(), GNUNET_MESSENGER_OperationStore::room, send_tunnel_message(), and GNUNET_MESSENGER_SrvRoom::service.

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 201 of file gnunet-service-messenger_room.c.

204{
205 struct GNUNET_MESSENGER_SrvRoom *room;
206 struct GNUNET_MESSENGER_SrvTunnel *tunnel;
207
208 GNUNET_assert ((cls) && (channel) && (source));
209
210 room = cls;
211 tunnel = create_tunnel (room, source);
212
213 if ((tunnel) &&
215 tunnel,
217 {
218 destroy_tunnel (tunnel);
219 tunnel = NULL;
220 }
221
222 if (! tunnel)
223 {
225 return NULL;
226 }
227
228 bind_tunnel (tunnel, channel);
229
231 "New tunnel in room (%s) established to peer: %s\n",
233
234 if (GNUNET_YES == send_room_info (room, room->host, tunnel))
235 return tunnel;
236
237 disconnect_tunnel (tunnel);
238
240 tunnel))
241 destroy_tunnel (tunnel);
242
243 return NULL;
244}
static GstElement * source
Appsrc instance into which we write data for the pipeline.
static enum GNUNET_GenericReturnValue send_room_info(struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvHandle *handle, struct GNUNET_MESSENGER_SrvTunnel *tunnel)
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...
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 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.
const char * GNUNET_i2s(const struct GNUNET_PeerIdentity *pid)
Convert a peer identity 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_assert, 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 enum GNUNET_GenericReturnValue join_room ( struct GNUNET_MESSENGER_SrvRoom room,
struct GNUNET_MESSENGER_SrvHandle handle,
struct GNUNET_MESSENGER_Member member,
const struct GNUNET_ShortHashCode id 
)
static

Definition at line 248 of file gnunet-service-messenger_room.c.

252{
253 const struct GNUNET_ShortHashCode *member_id;
254
255 GNUNET_assert ((room) && (handle) && (member));
256
257 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Joining room: %s (%s)\n", GNUNET_h2s (
258 get_srv_room_key (room)),
259 GNUNET_sh2s (get_member_id (member)));
260
261 member_id = get_member_id (member);
262
264 member_id))
265 return GNUNET_NO;
266
267 {
269 if ((! id) || (0 != GNUNET_memcmp (id, member_id)))
271 else
273
274 notify_srv_handle_member_id (handle, room, member_id, reset);
275 }
276
277 return GNUNET_YES;
278}
static int reset
Reset argument.
enum GNUNET_GenericReturnValue 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...
void notify_srv_handle_member_id(struct GNUNET_MESSENGER_SrvHandle *handle, struct GNUNET_MESSENGER_SrvRoom *room, const struct GNUNET_ShortHashCode *member_id, enum GNUNET_GenericReturnValue reset)
Notifies the handle that a new member id needs to be used.
const struct GNUNET_ShortHashCode * get_member_id(const struct GNUNET_MESSENGER_Member *member)
Returns the current id of a given member.
#define GNUNET_memcmp(a, b)
Compare memory in a and b, where both must be of the same pointer type.
GNUNET_GenericReturnValue
Named constants for return values.
const char * GNUNET_sh2s(const struct GNUNET_ShortHashCode *shc)
Convert a short hash value to a string (for printing debug messages).
A 256-bit hashcode.

References change_srv_handle_member_id(), get_member_id(), get_srv_room_key(), GNUNET_assert, GNUNET_ERROR_TYPE_DEBUG, GNUNET_h2s(), GNUNET_log, GNUNET_memcmp, GNUNET_NO, GNUNET_OK, GNUNET_sh2s(), GNUNET_YES, handle, notify_srv_handle_member_id(), and reset.

Referenced by join_room_locally(), and open_srv_room().

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◆ join_room_locally()

static enum GNUNET_GenericReturnValue join_room_locally ( struct GNUNET_MESSENGER_SrvRoom room,
struct GNUNET_MESSENGER_SrvHandle handle 
)
static

Definition at line 282 of file gnunet-service-messenger_room.c.

284{
285 struct GNUNET_MESSENGER_MemberStore *member_store;
286 const struct GNUNET_ShortHashCode *member_id;
287 struct GNUNET_MESSENGER_Member *member;
288
289 member_store = get_srv_room_member_store (room);
291 member = add_store_member (member_store, member_id);
292
293 if (GNUNET_NO == join_room (room, handle, member, member_id))
294 return GNUNET_NO;
295
296 return GNUNET_YES;
297}
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_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 enum GNUNET_GenericReturnValue join_room(struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvHandle *handle, struct GNUNET_MESSENGER_Member *member, const struct GNUNET_ShortHashCode *id)

References add_store_member(), get_srv_handle_member_id(), get_srv_room_key(), get_srv_room_member_store(), GNUNET_NO, GNUNET_YES, handle, and join_room().

Referenced by enter_srv_room_at(), and open_srv_room().

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◆ open_srv_room()

enum GNUNET_GenericReturnValue 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 301 of file gnunet-service-messenger_room.c.

303{
304 GNUNET_assert (room);
305
306 if (handle)
307 room->host = handle;
308
309 if (room->port)
310 {
311 if (! handle)
312 return GNUNET_YES;
313
314 return join_room_locally (room, handle);
315 }
316
317 {
319 const struct GNUNET_HashCode *key;
320 struct GNUNET_HashCode port;
321
323 tunnel_message,
325 struct
328
329 cadet = get_srv_room_cadet (room);
330 key = get_srv_room_key (room);
331
334 room, NULL, callback_tunnel_disconnect,
335 handlers);
336 }
337
338 if (room->port)
339 GNUNET_log (GNUNET_ERROR_TYPE_INFO, "Port of room (%s) was opened!\n",
341 else
343 "Port of room (%s) could not be opened!\n",
345
346 if (! handle)
347 goto complete_opening;
348
349 {
350 struct GNUNET_MESSENGER_MemberStore *member_store;
351 const struct GNUNET_ShortHashCode *member_id;
352 struct GNUNET_MESSENGER_Member *member;
353
354 member_store = get_srv_room_member_store (room);
356 member = add_store_member (member_store, member_id);
357
358 if ((GNUNET_NO == join_room (room, handle, member, member_id)) &&
359 (room->port))
360 {
362 "You could not join the room, therefore it keeps closed!\n");
363
364 close_srv_room (room);
365 return GNUNET_NO;
366 }
367 }
368
369complete_opening:
370 if (! room->port)
371 return GNUNET_NO;
372
373 {
374 struct GNUNET_MESSENGER_Message *message;
375 message = create_message_peer (room->service);
376
377 if (! message)
378 {
380 "Peer message could not be sent!\n");
381 return GNUNET_NO;
382 }
383
384 return send_srv_room_message (room, handle, message);
385 }
386}
struct GNUNET_MQ_MessageHandlers handlers[]
Definition: 003.c:1
static uint16_t port
Port number.
Definition: gnunet-bcd.c:147
static struct GNUNET_CADET_Handle * cadet
Handle for cadet.
struct GNUNET_MESSENGER_Message * create_message_peer(struct GNUNET_MESSENGER_Service *service)
Creates and allocates a new peer message containing a services peer identity.
static void * callback_room_connect(void *cls, struct GNUNET_CADET_Channel *channel, const struct GNUNET_PeerIdentity *source)
static enum GNUNET_GenericReturnValue join_room_locally(struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvHandle *handle)
struct GNUNET_CADET_Handle * get_srv_room_cadet(struct GNUNET_MESSENGER_SrvRoom *room)
Returns the CADET handle from a rooms service.
void callback_tunnel_disconnect(void *cls, const struct GNUNET_CADET_Channel *channel)
Callback for a CADET channel disconnecting to manage this event as a proper tunnel provided as its cl...
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
@ GNUNET_ERROR_TYPE_WARNING
@ GNUNET_ERROR_TYPE_ERROR
#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(), close_srv_room(), 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_open_port(), GNUNET_ERROR_TYPE_ERROR, GNUNET_ERROR_TYPE_INFO, GNUNET_ERROR_TYPE_WARNING, GNUNET_h2s(), GNUNET_log, GNUNET_MESSAGE_TYPE_CADET_CLI, GNUNET_MQ_handler_end, GNUNET_MQ_hd_var_size, GNUNET_NO, GNUNET_YES, handle, handlers, GNUNET_MESSENGER_SrvRoom::host, join_room(), join_room_locally(), key, port, GNUNET_MESSENGER_SrvRoom::port, send_srv_room_message(), and GNUNET_MESSENGER_SrvRoom::service.

Referenced by open_service_room(), and recv_message_miss().

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◆ enter_srv_room_at()

enum GNUNET_GenericReturnValue 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 409 of file gnunet-service-messenger_room.c.

412{
413 struct GNUNET_PeerIdentity peer;
414 struct GNUNET_MESSENGER_SrvTunnel *tunnel;
415
416 GNUNET_assert ((room) && (handle) && (door));
417
419 (0 == GNUNET_memcmp (&peer, door)))
420 return join_room_locally (room, handle);
421
423
424 if (! tunnel)
425 {
426 tunnel = create_tunnel (room, door);
427
429 tunnel,
431 {
433 "You could not connect to that door!\n");
434 destroy_tunnel (tunnel);
435 return GNUNET_NO;
436 }
437 }
438
439 if (GNUNET_SYSERR == connect_tunnel (tunnel))
440 {
442 "Connection failure during entrance!\n");
444 destroy_tunnel (tunnel);
445 return GNUNET_NO;
446 }
447
448 return join_room_locally (room, handle);
449}
enum GNUNET_GenericReturnValue 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.
@ GNUNET_SYSERR

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(), GNUNET_MESSENGER_SrvTunnel::peer, GNUNET_MESSENGER_SrvTunnel::room, GNUNET_MESSENGER_SrvRoom::service, and GNUNET_MESSENGER_SrvRoom::tunnels.

Referenced by callback_tunnel_disconnect(), and entry_service_room().

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◆ sign_srv_room_message_by_peer()

static void sign_srv_room_message_by_peer ( const void *  cls,
struct GNUNET_MESSENGER_Message message,
uint16_t  length,
char *  buffer,
const struct GNUNET_HashCode hash 
)
static

Definition at line 453 of file gnunet-service-messenger_room.c.

458{
460
461 GNUNET_assert ((cls) && (message) && (buffer) && (hash));
462
463 handle = cls;
464
465 GNUNET_assert (handle->service);
466
467 sign_message_by_peer (message, length, buffer, hash, handle->service->config);
468}
void sign_message_by_peer(struct GNUNET_MESSENGER_Message *message, uint16_t length, char *buffer, const struct GNUNET_HashCode *hash, const struct GNUNET_CONFIGURATION_Handle *cfg)
Signs the hash of a message with the peer identity of a given config and writes the signature into th...

References GNUNET_assert, handle, and sign_message_by_peer().

Referenced by pack_srv_room_message().

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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,
enum GNUNET_MESSENGER_PackMode  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 private key.

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 472 of file gnunet-service-messenger_room.c.

477{
478 struct GNUNET_PeerIdentity peer;
479
480 GNUNET_assert ((room) && (handle) && (message) && (hash));
481
482 if (GNUNET_YES != is_peer_message (message))
483 return pack_message (message, hash, NULL, mode, NULL);
484
487
488 if (GNUNET_OK != get_service_peer_identity (handle->service, &peer))
489 return NULL;
490
491 convert_peer_identity_to_id (&peer, &(message->header.sender_id));
492 get_message_state_chain_hash (&(room->state), &(message->header.previous));
493
495 "Packing message with peer signature: %s\n",
496 GNUNET_sh2s (&(message->header.sender_id)));
497
499 return pack_message (message, hash, sign_srv_room_message_by_peer, mode,
500 handle);
501}
void get_message_state_chain_hash(const struct GNUNET_MESSENGER_MessageState *state, struct GNUNET_HashCode *hash)
static void sign_srv_room_message_by_peer(const void *cls, struct GNUNET_MESSENGER_Message *message, uint16_t length, char *buffer, const struct GNUNET_HashCode *hash)
static enum @44 mode
Should we do a PUT (mode = 0) or GET (mode = 1);.
@ GNUNET_PUBLIC_KEY_TYPE_EDDSA
EDDSA identity.
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:640
struct GNUNET_MQ_Envelope * pack_message(struct GNUNET_MESSENGER_Message *message, struct GNUNET_HashCode *hash, const GNUNET_MESSENGER_SignFunction sign, enum GNUNET_MESSENGER_PackMode mode, const void *cls)
Encodes the message to pack it into a newly allocated envelope if mode is equal to GNUNET_MESSENGER_P...
void convert_peer_identity_to_id(const struct GNUNET_PeerIdentity *identity, struct GNUNET_ShortHashCode *id)
Converts a peers identity to a short hash code which can be used as id to refer to a peer via sender ...
uint32_t type
Type of signature.
struct GNUNET_HashCode previous
The hash of the previous message from the senders perspective.
struct GNUNET_CRYPTO_Signature signature
The signature of the senders private key.
struct GNUNET_TIME_AbsoluteNBO timestamp
The timestamp of the message.
struct GNUNET_ShortHashCode sender_id
The senders id inside of the room the message was sent in.
struct GNUNET_MESSENGER_MessageHeader header
Header.

References convert_peer_identity_to_id(), get_message_state_chain_hash(), get_service_peer_identity(), GNUNET_assert, GNUNET_ERROR_TYPE_DEBUG, GNUNET_log, GNUNET_OK, GNUNET_PUBLIC_KEY_TYPE_EDDSA, GNUNET_sh2s(), GNUNET_TIME_absolute_get(), GNUNET_TIME_absolute_hton(), GNUNET_YES, handle, GNUNET_MESSENGER_Message::header, is_peer_message(), mode, pack_message(), GNUNET_MESSENGER_MessageHeader::previous, GNUNET_MESSENGER_MessageHeader::sender_id, sign_srv_room_message_by_peer(), GNUNET_MESSENGER_MessageHeader::signature, GNUNET_MESSENGER_SrvRoom::state, GNUNET_MESSENGER_MessageHeader::timestamp, and GNUNET_CRYPTO_Signature::type.

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

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◆ iterate_send_room_message()

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

Definition at line 515 of file gnunet-service-messenger_room.c.

518{
519 struct GNUNET_MESSENGER_SrvTunnel *tunnel;
520 struct GNUNET_MESSENGER_ClosureSendRoom *closure;
521 struct GNUNET_MQ_Envelope *env;
522
523 GNUNET_assert ((cls) && (value));
524
525 tunnel = value;
526
527 if ((! is_tunnel_connected (tunnel)) ||
529 return GNUNET_YES;
530
531 closure = cls;
532
533 if (tunnel == closure->exclude)
534 return GNUNET_YES;
535
536 env = NULL;
537
538 if (closure->packed == GNUNET_NO)
539 {
540 env = pack_srv_room_message (closure->room, closure->handle,
541 closure->message, closure->hash,
543
544 if (env)
545 closure->packed = GNUNET_YES;
546 }
547 else
548 env = pack_message (closure->message, NULL, NULL,
550
551 if (env)
552 send_tunnel_envelope (tunnel, env, closure->hash);
553
554 return GNUNET_YES;
555}
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, enum GNUNET_MESSENGER_PackMode 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.
@ 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_assert, 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()

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

Definition at line 1145 of file gnunet-service-messenger_room.c.

1148{
1149 struct GNUNET_MESSENGER_OperationStore *operation_store;
1150 struct GNUNET_MESSENGER_MessageStore *message_store;
1151 enum GNUNET_GenericReturnValue requested;
1152
1153 GNUNET_assert ((room) && (message) && (hash));
1154
1155 operation_store = get_srv_room_operation_store (room);
1156
1157 requested = (GNUNET_MESSENGER_OP_REQUEST ==
1158 get_store_operation_type (operation_store, hash)?
1160
1161 if (GNUNET_YES == requested)
1162 cancel_store_operation (operation_store, hash);
1163
1164 message_store = get_srv_room_message_store (room);
1165
1166 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Handle a message in room (%s).\n",
1167 GNUNET_h2s (get_srv_room_key (room)));
1168
1169 if (GNUNET_YES == contains_store_message (message_store, hash))
1170 {
1171 destroy_message (message);
1172
1173 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Duplicate message got dropped!\n");
1174 return GNUNET_NO;
1175 }
1176
1177 if (GNUNET_OK != put_store_message (message_store, hash, message))
1178 {
1179 destroy_message (message);
1180
1181 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Storing message failed!\n");
1182 return GNUNET_NO;
1183 }
1184
1185 update_message_state (&(room->state), requested, message, hash);
1186
1187 if ((GNUNET_YES == requested) ||
1188 (GNUNET_MESSENGER_KIND_INFO == message->header.kind) ||
1190 return GNUNET_YES;
1191
1192 if ((GNUNET_MESSENGER_KIND_MERGE == message->header.kind) &&
1194 &(message->body.
1195 merge.previous))))
1196 cancel_store_operation (operation_store, &(message->body.merge.previous));
1197
1199 &(message->header.
1200 previous)))
1201 cancel_store_operation (operation_store, &(message->header.previous));
1202
1203 return GNUNET_YES;
1204}
void update_message_state(struct GNUNET_MESSENGER_MessageState *state, enum GNUNET_GenericReturnValue requested, const struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash)
enum GNUNET_GenericReturnValue contains_store_message(const struct GNUNET_MESSENGER_MessageStore *store, const struct GNUNET_HashCode *hash)
Checks if a message matching a given hash is stored in a message store.
enum GNUNET_GenericReturnValue 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_INFO
The info kind.
@ GNUNET_MESSENGER_KIND_REQUEST
The request kind.
@ 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(), contains_store_message(), destroy_message(), get_srv_room_key(), get_srv_room_message_store(), get_srv_room_operation_store(), 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_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,
const struct GNUNET_MESSENGER_Message message,
const struct GNUNET_HashCode hash 
)

Definition at line 1313 of file gnunet-service-messenger_room.c.

1316{
1317 struct GNUNET_MESSENGER_PeerStore *peer_store;
1318 struct GNUNET_MESSENGER_MemberStore *member_store;
1319 struct GNUNET_MESSENGER_SenderSession session;
1320 enum GNUNET_GenericReturnValue start_handle;
1321
1322 GNUNET_assert ((room) && (message) && (hash));
1323
1324 peer_store = get_srv_room_peer_store (room);
1325 member_store = get_srv_room_member_store (room);
1326
1327 if (GNUNET_YES == is_peer_message (message))
1328 {
1329 session.peer = get_store_peer_of (peer_store, message, hash);
1330
1331 if (! session.peer)
1332 {
1334 "Message handling dropped: Peer is missing!\n");
1335 return;
1336 }
1337 }
1338 else
1339 {
1340 struct GNUNET_MESSENGER_Member *member;
1341 member = get_store_member_of (member_store, message);
1342
1343 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Callback for message (%s)\n",
1344 GNUNET_h2s (hash));
1345
1346 if (! member)
1347 {
1349 "Message handling dropped: Member is missing!\n");
1350 return;
1351 }
1352
1353 session.member = get_member_session_of (member, message, hash);
1354
1355 if (! session.member)
1356 {
1358 "Message handling dropped: Session is missing!\n");
1359 return;
1360 }
1361 }
1362
1363 {
1364 struct GNUNET_MESSENGER_MemberUpdate update;
1365 update.message = message;
1366 update.hash = hash;
1367
1368 update.head = NULL;
1369 update.tail = NULL;
1370
1372
1373 while (update.head)
1374 {
1375 struct GNUNET_MESSENGER_MemberSessionCompletion *element = update.head;
1376
1377 remove_room_member_session (room, element->session);
1378
1379 GNUNET_CONTAINER_DLL_remove (update.head, update.tail, element);
1380 GNUNET_free (element);
1381 }
1382 }
1383
1384 start_handle = room->handling.head ? GNUNET_NO : GNUNET_YES;
1385
1386 add_to_list_messages (&(room->handling), hash);
1387
1388 switch (message->header.kind)
1389 {
1391 handle_message_join (room, &session, message, hash);
1392 break;
1394 handle_message_leave (room, &session, message, hash);
1395 break;
1397 handle_message_key (room, &session, message, hash);
1398 break;
1400 handle_message_peer (room, &session, message, hash);
1401 break;
1403 handle_message_id (room, &session, message, hash);
1404 break;
1406 handle_message_miss (room, &session, message, hash);
1407 break;
1409 handle_message_delete (room, &session, message, hash);
1410 break;
1412 handle_message_connection (room, &session, message, hash);
1413 break;
1415 handle_message_subscribe (room, &session, message, hash);
1416 break;
1417 default:
1418 break;
1419 }
1420
1421 if (GNUNET_YES == start_handle)
1422 handle_room_messages (room);
1423}
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.
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 ...
void handle_message_id(struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SenderSession *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_delete(struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SenderSession *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.
void handle_message_peer(struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SenderSession *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_SenderSession *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_key(struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SenderSession *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_leave(struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SenderSession *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_subscribe(struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SenderSession *session, const struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash)
Handles a received or sent subscribe message to subscribe a member to a discourse.
void handle_message_connection(struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SenderSession *session, const struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash)
Handles a received or sent connection message to update connection information about a peer.
void handle_message_miss(struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SenderSession *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.
static void remove_room_member_session(struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_MemberSession *session)
static enum GNUNET_GenericReturnValue iterate_update_member_sessions(void *cls, const struct GNUNET_CRYPTO_PublicKey *public_key, struct GNUNET_MESSENGER_MemberSession *session)
@ GNUNET_MESSENGER_KIND_MISS
The miss kind.
@ GNUNET_MESSENGER_KIND_LEAVE
The leave kind.
@ GNUNET_MESSENGER_KIND_SUBSCRIBE
The subscribe kind.
@ GNUNET_MESSENGER_KIND_PEER
The peer 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_CONNECTION
The connection 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_srv_room_peer_store(), get_store_member_of(), get_store_peer_of(), GNUNET_assert, GNUNET_CONTAINER_DLL_remove, GNUNET_ERROR_TYPE_DEBUG, GNUNET_ERROR_TYPE_WARNING, GNUNET_free, GNUNET_h2s(), GNUNET_log, GNUNET_MESSENGER_KIND_CONNECTION, 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_PEER, GNUNET_MESSENGER_KIND_SUBSCRIBE, GNUNET_NO, GNUNET_YES, handle_message_connection(), handle_message_delete(), handle_message_id(), handle_message_join(), handle_message_key(), handle_message_leave(), handle_message_miss(), handle_message_peer(), handle_message_subscribe(), handle_room_messages(), GNUNET_MESSENGER_SrvRoom::handling, GNUNET_MESSENGER_MemberUpdate::hash, GNUNET_MESSENGER_ListMessages::head, GNUNET_MESSENGER_MemberUpdate::head, GNUNET_MESSENGER_Message::header, is_peer_message(), iterate_store_members(), iterate_update_member_sessions(), GNUNET_MESSENGER_MessageHeader::kind, GNUNET_MESSENGER_SenderSession::member, GNUNET_MESSENGER_MemberUpdate::message, GNUNET_MESSENGER_SenderSession::peer, remove_room_member_session(), 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()

enum GNUNET_GenericReturnValue 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 569 of file gnunet-service-messenger_room.c.

572{
573 struct GNUNET_HashCode hash;
574
575 GNUNET_assert ((room) && (handle));
576
577 if (! message)
578 return GNUNET_NO;
579
581 "Sending message from handle in room: %s (%s)\n",
582 GNUNET_h2s (&(room->key)),
584
585 {
587
588 closure.room = room;
589 closure.handle = handle;
590 closure.exclude = NULL;
591 closure.message = message;
592 closure.hash = &hash;
593 closure.packed = GNUNET_NO;
594
596 iterate_send_room_message, &closure);
597
598 if (GNUNET_NO == closure.packed)
601 }
602
603 {
604 enum GNUNET_GenericReturnValue new_message;
605 new_message = update_room_message (room, message, &hash);
606
607 if (GNUNET_YES != new_message)
608 {
609 GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Sending duplicate message failed!\n");
610 return GNUNET_SYSERR;
611 }
612 }
613
614 switch (message->header.kind)
615 {
618 break;
621 break;
624 break;
627 break;
630 break;
631 default:
632 break;
633 }
634
636 return GNUNET_YES;
637}
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_key(struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvHandle *handle, const struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash)
Handles a sent key message to ensure changes to the public key of the sending handle.
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.
enum GNUNET_GenericReturnValue 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, const struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash)
static enum GNUNET_GenericReturnValue iterate_send_room_message(void *cls, const struct GNUNET_PeerIdentity *key, void *value)
const char * GNUNET_MESSENGER_name_of_kind(enum GNUNET_MESSENGER_MessageKind kind)
Get the name of a message kind.
Definition: messenger_api.c:44
@ GNUNET_MESSENGER_PACK_MODE_UNKNOWN

References callback_room_handle_message(), GNUNET_MESSENGER_ClosureSendRoom::exclude, GNUNET_assert, GNUNET_CONTAINER_multipeermap_iterate(), GNUNET_ERROR_TYPE_DEBUG, GNUNET_ERROR_TYPE_ERROR, GNUNET_h2s(), GNUNET_log, GNUNET_MESSENGER_KIND_ID, GNUNET_MESSENGER_KIND_JOIN, GNUNET_MESSENGER_KIND_KEY, GNUNET_MESSENGER_KIND_PEER, GNUNET_MESSENGER_KIND_REQUEST, GNUNET_MESSENGER_name_of_kind(), GNUNET_MESSENGER_PACK_MODE_UNKNOWN, GNUNET_NO, GNUNET_SYSERR, GNUNET_YES, handle, GNUNET_MESSENGER_ClosureSendRoom::handle, GNUNET_MESSENGER_ClosureSendRoom::hash, GNUNET_MESSENGER_Message::header, iterate_send_room_message(), GNUNET_MESSENGER_SrvRoom::key, GNUNET_MESSENGER_MessageHeader::kind, GNUNET_MESSENGER_ClosureSendRoom::message, pack_srv_room_message(), GNUNET_MESSENGER_ClosureSendRoom::packed, GNUNET_MESSENGER_ClosureSendRoom::room, send_message_id(), send_message_join(), send_message_key(), send_message_peer(), send_message_request(), GNUNET_MESSENGER_SrvRoom::tunnels, and update_room_message().

Referenced by callback_operation(), callback_tunnel_disconnect(), close_service_room(), close_srv_room(), merge_srv_room_last_messages(), open_srv_room(), send_message_peer(), and send_srv_handle_message().

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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 641 of file gnunet-service-messenger_room.c.

645{
647 struct GNUNET_HashCode message_hash;
648
649 GNUNET_assert ((room) && (tunnel));
650
651 if (! message)
652 return;
653
654 GNUNET_memcpy (&message_hash, hash, sizeof(struct GNUNET_HashCode));
655
656 closure.room = room;
657 closure.handle = NULL;
658 closure.exclude = tunnel;
659 closure.message = message;
660 closure.hash = &message_hash;
661 closure.packed = GNUNET_YES;
662
664 iterate_send_room_message, &closure);
665}

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 669 of file gnunet-service-messenger_room.c.

671{
672 struct GNUNET_MESSENGER_MessageStore *message_store;
673 const struct GNUNET_MESSENGER_Message *message;
674
675 if (! room->peer_message)
676 return;
677
678 message_store = get_srv_room_message_store (room);
679 message = get_store_message (message_store, room->peer_message);
680
681 if (! message)
682 {
684 room->peer_message = NULL;
685 return;
686 }
687
688 if (tunnel)
689 forward_tunnel_message (tunnel, message, room->peer_message);
690}
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 forward_tunnel_message(), get_srv_room_message_store(), get_store_message(), GNUNET_free, and GNUNET_MESSENGER_SrvRoom::peer_message.

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 694 of file gnunet-service-messenger_room.c.

696{
697 const struct GNUNET_HashCode *hash;
698
699 GNUNET_assert (room);
700
701 if (! handle)
702 return;
703
705 "Merging messages by handle in room: %s\n",
706 GNUNET_h2s (&(room->key)));
707
708 do
709 {
710 struct GNUNET_MESSENGER_Message *message;
711
712 hash = get_message_state_merge_hash (&(room->state));
713
714 if (! hash)
715 break;
716
717 message = create_message_merge (hash);
718
719 if (! message)
720 {
722 "Merging messages failed: %s\n",
723 GNUNET_h2s (&(room->key)));
724 }
725
726 send_srv_room_message (room, handle, message);
727 }
728 while (hash);
729}
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, GNUNET_ERROR_TYPE_DEBUG, GNUNET_ERROR_TYPE_ERROR, GNUNET_h2s(), GNUNET_log, handle, GNUNET_MESSENGER_SrvRoom::key, send_srv_room_message(), and GNUNET_MESSENGER_SrvRoom::state.

Referenced by sync_srv_handle_messages().

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◆ delete_srv_room_message()

enum GNUNET_GenericReturnValue 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 733 of file gnunet-service-messenger_room.c.

737{
738 const struct GNUNET_MESSENGER_Message *message;
739 struct GNUNET_TIME_Relative forever;
740
741 GNUNET_assert ((room) && (session) && (hash));
742
744
745 if (0 == GNUNET_memcmp (&forever, &delay))
746 {
748 "Deletion is delayed forever: operation is impossible!\n");
749 return GNUNET_SYSERR;
750 }
751
752 {
753 struct GNUNET_MESSENGER_MessageStore *message_store;
754
755 message_store = get_srv_room_message_store (room);
756 message = get_store_message (message_store, hash);
757 }
758
759 if (! message)
760 return GNUNET_YES;
761
762 if (GNUNET_YES != check_member_session_history (session, hash, GNUNET_YES))
763 {
765 "Unpermitted request for deletion by member (%s) of message (%s)!\n",
767 hash));
768
769 return GNUNET_NO;
770 }
771
772 {
773 struct GNUNET_MESSENGER_OperationStore *operation_store;
774
775 operation_store = get_srv_room_operation_store (room);
776
777 if (GNUNET_OK != use_store_operation (operation_store, hash,
779 {
781 "Deletion has failed: operation denied!\n");
782 return GNUNET_SYSERR;
783 }
784 }
785
786 return GNUNET_YES;
787}
const struct GNUNET_ShortHashCode * get_member_session_id(const struct GNUNET_MESSENGER_MemberSession *session)
Returns the member id of a given member session.
enum GNUNET_GenericReturnValue check_member_session_history(const struct GNUNET_MESSENGER_MemberSession *session, const struct GNUNET_HashCode *hash, enum GNUNET_GenericReturnValue ownership)
Checks the history of a session for a specific message which is identified by its hash and if the own...
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(), 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 791 of file gnunet-service-messenger_room.c.

792{
793 GNUNET_assert (room);
794
795 return room->service->cadet;
796}
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 800 of file gnunet-service-messenger_room.c.

801{
802 GNUNET_assert (room);
803
804 return &(room->key);
805}

References GNUNET_assert, and GNUNET_MESSENGER_SrvRoom::key.

Referenced by callback_room_connect(), clear_member_store(), clear_operation_store(), connect_tunnel(), find_member_session_in_room(), get_member_store_key(), get_room_data_subdir(), handle_message_join(), handle_message_leave(), handle_room_messages(), join_room(), join_room_locally(), notify_srv_handle_member_id(), notify_srv_handle_message(), open_srv_room(), remove_room_member_session(), send_message_id(), 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 809 of file gnunet-service-messenger_room.c.

811{
812 GNUNET_assert ((room) && (peer));
813
814 return GNUNET_CONTAINER_multipeermap_get (room->tunnels, peer);
815}

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

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◆ request_room_message_step()

static enum GNUNET_GenericReturnValue 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 819 of file gnunet-service-messenger_room.c.

824{
825 struct GNUNET_MESSENGER_MessageStore *message_store;
826 const struct GNUNET_MESSENGER_MessageLink *link;
827 const struct GNUNET_MESSENGER_Message *message;
828
829 GNUNET_assert ((room) && (hash) && (session));
830
831 message_store = get_srv_room_message_store (room);
832 link = get_store_message_link (message_store, hash, GNUNET_YES);
833
834 if (! link)
835 goto forward;
836
838 "Requesting link of message with hash: %s\n",
839 GNUNET_h2s (hash));
840
841 {
843 result = request_room_message_step (room, &(link->first), session,
844 callback, cls);
845
846 if ((GNUNET_YES == link->multiple) &&
847 (GNUNET_YES == request_room_message_step (room, &(link->second), session,
848 callback, cls)))
849 return GNUNET_YES;
850 else
851 return result;
852 }
853
854forward:
855 message = get_store_message (message_store, hash);
856
857 if (! message)
858 {
860 "Requested message is missing in local storage: %s\n",
861 GNUNET_h2s (hash));
862 return GNUNET_NO;
863 }
864
865 if (GNUNET_YES != check_member_session_history (session, hash, GNUNET_NO))
867 "Unpermitted request for access by member (%s) of message (%s)!\n",
869 hash));
870 else if (callback)
871 callback (cls, room, message, hash);
872
873 return GNUNET_YES;
874}
static int forward
Search direction: forward.
Definition: gnunet-abd.c:163
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, enum GNUNET_GenericReturnValue deleted_only)
Returns the message link from a message store matching a given hash.
static enum GNUNET_GenericReturnValue 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_member_session_id(), get_srv_room_message_store(), get_store_message(), get_store_message_link(), GNUNET_assert, GNUNET_ERROR_TYPE_INFO, GNUNET_ERROR_TYPE_WARNING, GNUNET_h2s(), GNUNET_log, GNUNET_NO, GNUNET_sh2s(), GNUNET_YES, GNUNET_MESSENGER_MessageLink::multiple, request_room_message_step(), result, and GNUNET_MESSENGER_MessageLink::second.

Referenced by request_room_message_step(), and request_srv_room_message().

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◆ request_srv_room_message()

enum GNUNET_GenericReturnValue 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 878 of file gnunet-service-messenger_room.c.

883{
885
886 GNUNET_assert ((room) && (hash));
887
888 result = request_room_message_step (room, hash, session, callback, cls);
889
890 if ((GNUNET_NO == result) && (callback))
891 callback (cls, room, NULL, hash);
892
893 return result;
894}

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

Referenced by handle_get_message(), and recv_message_request().

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◆ solve_srv_room_member_collisions()

void solve_srv_room_member_collisions ( struct GNUNET_MESSENGER_SrvRoom room,
const struct GNUNET_CRYPTO_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
[in]member_idMember ID
[in]timestampTimestamp

Definition at line 932 of file gnunet-service-messenger_room.c.

937{
938 struct GNUNET_MESSENGER_MemberStore *member_store;
939 struct GNUNET_MESSENGER_Member *member;
940 struct GNUNET_MESSENGER_ListHandles *handles;
941 struct GNUNET_MESSENGER_ListHandle *element;
942
943 GNUNET_assert ((room) && (public_key) && (member_id));
944
945 member_store = get_srv_room_member_store (room);
946 member = get_store_member (member_store, member_id);
947
948 if ((! member) || (1 >= GNUNET_CONTAINER_multihashmap_size (
949 member->sessions)))
950 return;
951
952 handles = &(room->service->handles);
953
954 for (element = handles->head; element; element = element->next)
955 {
956 const struct GNUNET_CRYPTO_PublicKey *pubkey;
957 struct GNUNET_MESSENGER_MemberSession *session;
958
959 if (0 != GNUNET_memcmp (member_id, get_srv_handle_member_id (
960 element->handle, get_srv_room_key (room))))
961 continue;
962
963 pubkey = get_srv_handle_key (element->handle);
964
965 if (0 == GNUNET_memcmp (public_key, pubkey))
966 continue;
967
968 session = get_member_session (member, pubkey);
969
970 if (! session)
971 continue;
972
973 {
976
977 if (GNUNET_TIME_relative_get_zero_ ().rel_value_us !=
979 continue;
980 }
981
982 {
983 struct GNUNET_ShortHashCode random_id;
984 generate_free_member_id (&random_id, member_store->members);
985
986 notify_srv_handle_member_id (element->handle, room, &random_id, GNUNET_NO);
987 }
988 }
989}
static int start
Set if we are to start default services (including ARM).
Definition: gnunet-arm.c:38
static uint64_t timestamp(void)
Get current timestamp.
static struct GNUNET_CRYPTO_PublicKey pubkey
Public key of the zone to look in.
const struct GNUNET_CRYPTO_PublicKey * get_srv_handle_key(const struct GNUNET_MESSENGER_SrvHandle *handle)
Returns the public key of a given handle.
struct GNUNET_MESSENGER_MemberSession * get_member_session(const struct GNUNET_MESSENGER_Member *member, const struct GNUNET_CRYPTO_PublicKey *public_key)
Returns the member session of a member identified by a given public key.
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.
unsigned int GNUNET_CONTAINER_multihashmap_size(const struct GNUNET_CONTAINER_MultiHashMap *map)
Get the number of key-value pairs in the map.
struct GNUNET_TIME_Relative GNUNET_TIME_relative_get_zero_(void)
Return relative time of 0ms.
Definition: time.c:133
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:423
enum GNUNET_GenericReturnValue 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.
An identity key as per LSD0001.
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
Time for absolute times used by GNUnet, in microseconds.

References generate_free_member_id(), get_member_session(), get_member_session_start(), get_srv_handle_key(), 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_NO, 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, notify_srv_handle_member_id(), pubkey, GNUNET_MESSENGER_MemberSession::public_key, GNUNET_MESSENGER_SrvRoom::service, GNUNET_MESSENGER_Member::sessions, start, and timestamp().

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 993 of file gnunet-service-messenger_room.c.

994{
995 struct GNUNET_MESSENGER_ListTunnel *element;
996 struct GNUNET_PeerIdentity peer;
997 size_t count;
998 size_t src;
999 size_t dst;
1000
1001 GNUNET_assert (room);
1002
1003 if (GNUNET_OK != get_service_peer_identity (room->service, &peer))
1004 return;
1005
1006 count = count_of_tunnels (&(room->basement));
1007
1008 if (! find_list_tunnels (&(room->basement), &peer, &src))
1009 return;
1010
1011 if ((count > room->service->min_routers) &&
1012 (GNUNET_NO == is_srv_handle_routing (room->host, &(room->key))) &&
1014 &peer,
1016 {
1017 close_srv_room (room);
1018 return;
1019 }
1020
1021 element = room->basement.head;
1022 dst = 0;
1023
1024 while (element)
1025 {
1026 struct GNUNET_MESSENGER_SrvTunnel *tunnel;
1027
1028 GNUNET_PEER_resolve (element->peer, &peer);
1029
1031
1032 if (! tunnel)
1033 {
1034 element = remove_from_list_tunnels (&(room->basement), element);
1035 continue;
1036 }
1037
1038 if (GNUNET_YES == required_connection_between (count, src, dst))
1039 {
1040 if (GNUNET_SYSERR == connect_tunnel (tunnel))
1041 {
1042 element = remove_from_list_tunnels (&(room->basement), element);
1043 continue;
1044 }
1045 }
1046 else
1047 disconnect_tunnel (tunnel);
1048
1049 element = element->next;
1050 dst++;
1051 }
1052}
enum GNUNET_GenericReturnValue 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).
enum GNUNET_GenericReturnValue is_srv_handle_routing(const struct GNUNET_MESSENGER_SrvHandle *handle, const struct GNUNET_HashCode *key)
Returns whether a given handle has enabled routing for a room using a specific key by opening that ro...
@ GNUNET_MESSENGER_FLAG_CONNECTION_AUTO
The auto flag.
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
enum GNUNET_GenericReturnValue verify_list_tunnels_flag_token(const struct GNUNET_MESSENGER_ListTunnels *tunnels, const struct GNUNET_PeerIdentity *peer, enum GNUNET_MESSENGER_ConnectionFlags flag)
Verifies that a specific tunnel selected by its peer identity in a list of tunnels is the first in or...
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 * 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 * next
struct GNUNET_MESSENGER_ListTunnel * head

References GNUNET_MESSENGER_SrvRoom::basement, close_srv_room(), connect_tunnel(), count_of_tunnels(), disconnect_tunnel(), find_list_tunnels(), get_service_peer_identity(), GNUNET_assert, GNUNET_CONTAINER_multipeermap_get(), GNUNET_MESSENGER_FLAG_CONNECTION_AUTO, GNUNET_NO, GNUNET_OK, GNUNET_PEER_resolve(), GNUNET_SYSERR, GNUNET_YES, GNUNET_MESSENGER_ListTunnels::head, GNUNET_MESSENGER_SrvRoom::host, is_srv_handle_routing(), GNUNET_MESSENGER_SrvRoom::key, GNUNET_MESSENGER_Service::min_routers, GNUNET_MESSENGER_ListTunnel::next, GNUNET_MESSENGER_SrvTunnel::peer, GNUNET_MESSENGER_ListTunnel::peer, remove_from_list_tunnels(), required_connection_between(), GNUNET_MESSENGER_SrvTunnel::room, GNUNET_MESSENGER_SrvRoom::service, GNUNET_MESSENGER_SrvRoom::tunnels, and verify_list_tunnels_flag_token().

Referenced by handle_message_miss(), and handle_message_peer().

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◆ get_srv_room_amount_of_tunnels()

uint32_t get_srv_room_amount_of_tunnels ( const struct GNUNET_MESSENGER_SrvRoom room)

Returns the amount of active tunnels of a given room.

Parameters
[in]roomRoom
Returns
Amount of tunnels

Definition at line 1056 of file gnunet-service-messenger_room.c.

1057{
1058 GNUNET_assert (room);
1059
1061}
unsigned int GNUNET_CONTAINER_multipeermap_size(const struct GNUNET_CONTAINER_MultiPeerMap *map)
Get the number of key-value pairs in the map.

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

Referenced by create_message_connection().

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◆ get_srv_room_connection_flags()

uint32_t get_srv_room_connection_flags ( const struct GNUNET_MESSENGER_SrvRoom room)

Returns connection flags about connection information of a given room and the service managing it.

Parameters
[in]roomRoom
Returns
Connection flags

Definition at line 1065 of file gnunet-service-messenger_room.c.

1066{
1067 uint32_t flags;
1068
1069 GNUNET_assert (room);
1070
1072
1073 if (GNUNET_YES == room->service->auto_routing)
1075
1076 return flags;
1077}
@ GNUNET_MESSENGER_FLAG_CONNECTION_NONE
The none flag.
enum GNUNET_GenericReturnValue auto_routing

References GNUNET_MESSENGER_Service::auto_routing, GNUNET_assert, GNUNET_MESSENGER_FLAG_CONNECTION_AUTO, GNUNET_MESSENGER_FLAG_CONNECTION_NONE, GNUNET_YES, GNUNET_MESSENGER_SrvTunnel::room, and GNUNET_MESSENGER_SrvRoom::service.

Referenced by create_message_connection().

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◆ iterate_member_for_subscription()

static enum GNUNET_GenericReturnValue iterate_member_for_subscription ( void *  cls,
const struct GNUNET_CRYPTO_PublicKey public_key,
struct GNUNET_MESSENGER_MemberSession session 
)
static

Definition at line 1214 of file gnunet-service-messenger_room.c.

1217{
1219 struct GNUNET_MESSENGER_Member *member;
1220 struct GNUNET_MESSENGER_Subscription *subscribtion;
1221
1222 GNUNET_assert ((cls) && (session));
1223
1224 it = cls;
1225 member = session->member;
1226
1227 subscribtion = get_member_subscription (member, it->discourse);
1228
1229 if (! subscribtion)
1230 return GNUNET_YES;
1231
1232 if (GNUNET_TIME_absolute_cmp (subscribtion->start, <, it->start))
1233 it->start = subscribtion->start;
1234
1235 return GNUNET_YES;
1236}
struct GNUNET_MESSENGER_Subscription * get_member_subscription(struct GNUNET_MESSENGER_Member *member, const struct GNUNET_ShortHashCode *discourse)
Returns the active subscription of a given member to a selected discourse.
#define GNUNET_TIME_absolute_cmp(t1, op, t2)
Compare two absolute times.

References GNUNET_MESSENGER_MemberSubscriptionIteration::discourse, get_member_subscription(), GNUNET_assert, GNUNET_TIME_absolute_cmp, GNUNET_YES, GNUNET_MESSENGER_MemberSession::member, GNUNET_MESSENGER_Subscription::member, GNUNET_MESSENGER_MemberSubscriptionIteration::start, and GNUNET_MESSENGER_Subscription::start.

Referenced by cleanup_srv_room_discourse_messages().

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◆ cleanup_srv_room_discourse_messages()

void cleanup_srv_room_discourse_messages ( struct GNUNET_MESSENGER_SrvRoom room,
const struct GNUNET_ShortHashCode discourse 
)

Cleanup discourse messages outside of current subscriptions from a specific discourse of all the members in a given room.

Parameters
[in,out]roomRoom
[in]discourseHash of discourse

Definition at line 1239 of file gnunet-service-messenger_room.c.

1241{
1243 struct GNUNET_MESSENGER_MemberStore *member_store;
1244 struct GNUNET_MESSENGER_MessageStore *message_store;
1245
1246 GNUNET_assert ((room) && (discourse));
1247
1248 it.discourse = discourse;
1250
1251 member_store = get_srv_room_member_store (room);
1252
1254
1255 message_store = get_srv_room_message_store (room);
1256
1258 discourse,
1259 it.start);
1260}
void cleanup_store_discourse_messages_before(struct GNUNET_MESSENGER_MessageStore *store, const struct GNUNET_ShortHashCode *discourse, const struct GNUNET_TIME_Absolute timestamp)
Cleans up and deletes all discourse messages existing in the message store memory before a certain ti...
static enum GNUNET_GenericReturnValue iterate_member_for_subscription(void *cls, const struct GNUNET_CRYPTO_PublicKey *public_key, struct GNUNET_MESSENGER_MemberSession *session)
struct GNUNET_TIME_Absolute GNUNET_TIME_absolute_get_forever_(void)
Return "forever".
Definition: time.c:205

References cleanup_store_discourse_messages_before(), GNUNET_MESSENGER_MemberSubscriptionIteration::discourse, get_srv_room_member_store(), get_srv_room_message_store(), GNUNET_assert, GNUNET_TIME_absolute_get_forever_(), iterate_member_for_subscription(), iterate_store_members(), and GNUNET_MESSENGER_MemberSubscriptionIteration::start.

Referenced by handle_message_subscribe(), and task_subscription_exit().

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◆ iterate_update_member_sessions()

static enum GNUNET_GenericReturnValue iterate_update_member_sessions ( void *  cls,
const struct GNUNET_CRYPTO_PublicKey public_key,
struct GNUNET_MESSENGER_MemberSession session 
)
static

Definition at line 1281 of file gnunet-service-messenger_room.c.

1285{
1286 struct GNUNET_MESSENGER_MemberUpdate *update;
1287
1288 GNUNET_assert ((cls) && (session));
1289
1290 update = cls;
1291
1292 update_member_session_history (session, update->message, update->hash);
1293
1294 if (GNUNET_YES == is_member_session_completed (session))
1295 {
1297
1299 element->session = session;
1300
1301 GNUNET_CONTAINER_DLL_insert_tail (update->head, update->tail, element);
1302 }
1303
1304 return GNUNET_YES;
1305}
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.
enum GNUNET_GenericReturnValue is_member_session_completed(const struct GNUNET_MESSENGER_MemberSession *session)
Returns if the given member session has been completed.
#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_assert, 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 1537 of file gnunet-service-messenger_room.c.

1539{
1540 struct GNUNET_HashCode hash;
1541 char *session_dir;
1542 char *room_dir;
1543
1544 GNUNET_assert ((room) && (session));
1545
1547 "Remove member session from room: %s (%s)\n",
1549 GNUNET_h2s (get_srv_room_key (room)));
1550
1551 remove_member_session (session->member, session);
1552
1553 {
1554 const struct GNUNET_CRYPTO_PublicKey *public_key;
1555 public_key = get_member_session_public_key (session);
1556
1557 GNUNET_CRYPTO_hash (public_key, sizeof(*public_key), &hash);
1558 }
1559
1560
1561 get_room_data_subdir (room, &room_dir);
1562
1564 &session_dir, "%s%s%c%s%c%s%c%s%c", room_dir,
1565 "members", DIR_SEPARATOR,
1567 "sessions", DIR_SEPARATOR,
1568 GNUNET_h2s (&hash), DIR_SEPARATOR
1569 );
1570
1571 GNUNET_free (room_dir);
1572
1573 GNUNET_DISK_directory_remove (session_dir);
1574 GNUNET_free (session_dir);
1575
1576 destroy_member_session (session);
1577}
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_CRYPTO_PublicKey * get_member_session_public_key(const struct GNUNET_MESSENGER_MemberSession *session)
Returns the public key 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:1088
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:165

References destroy_member_session(), DIR_SEPARATOR, get_member_session_id(), get_member_session_public_key(), get_room_data_subdir(), get_srv_room_key(), GNUNET_asprintf(), GNUNET_assert, GNUNET_CRYPTO_hash(), GNUNET_DISK_directory_remove(), GNUNET_ERROR_TYPE_DEBUG, GNUNET_free, GNUNET_h2s(), GNUNET_log, GNUNET_sh2s(), GNUNET_MESSENGER_MemberSession::member, and remove_member_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 1427 of file gnunet-service-messenger_room.c.

1429{
1430 GNUNET_assert ((room) && (dir));
1431
1432 GNUNET_asprintf (dir, "%s%s%c%s%c", room->service->dir, "rooms",
1435}
static char * dir
Set to the directory where runtime files are stored.
Definition: gnunet-arm.c:88

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 1439 of file gnunet-service-messenger_room.c.

1440{
1441 char *room_dir;
1442
1443 GNUNET_assert (room);
1444
1445 get_room_data_subdir (room, &room_dir);
1446
1447 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Load room from directory: %s\n",
1448 room_dir);
1449
1451 {
1452 char *peers_file;
1453 GNUNET_asprintf (&peers_file, "%s%s", room_dir, "peers.list");
1454
1455 load_peer_store (get_srv_room_peer_store (room), peers_file);
1456 GNUNET_free (peers_file);
1457
1461
1462 {
1463 char *basement_file;
1464 GNUNET_asprintf (&basement_file, "%s%s", room_dir, "basement.list");
1465
1466 load_list_tunnels (&(room->basement), basement_file);
1467 GNUNET_free (basement_file);
1468 }
1469
1470 load_message_state (&(room->state), room_dir);
1471 }
1472
1473 GNUNET_free (room_dir);
1474}
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.
void load_peer_store(struct GNUNET_MESSENGER_PeerStore *store, const char *path)
Loads peer identities from a file into a peer 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:404
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(), get_srv_room_peer_store(), GNUNET_asprintf(), GNUNET_assert, GNUNET_DISK_directory_test(), GNUNET_ERROR_TYPE_DEBUG, GNUNET_free, GNUNET_log, GNUNET_YES, load_list_tunnels(), load_member_store(), load_message_state(), load_message_store(), load_operation_store(), load_peer_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 1478 of file gnunet-service-messenger_room.c.

1479{
1480 char *room_dir;
1481
1482 GNUNET_assert (room);
1483
1484 get_room_data_subdir (room, &room_dir);
1485
1486 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Save room to directory: %s\n",
1487 room_dir);
1488
1489 if ((GNUNET_YES == GNUNET_DISK_directory_test (room_dir, GNUNET_NO)) ||
1491 {
1492 char *peers_file;
1493 GNUNET_asprintf (&peers_file, "%s%s", room_dir, "peers.list");
1494
1495 save_peer_store (get_srv_room_peer_store (room), peers_file);
1496 GNUNET_free (peers_file);
1497
1501
1502 {
1503 char *basement_file;
1504 GNUNET_asprintf (&basement_file, "%s%s", room_dir, "basement.list");
1505
1506 save_list_tunnels (&(room->basement), basement_file);
1507 GNUNET_free (basement_file);
1508 }
1509
1510 save_message_state (&(room->state), room_dir);
1511 }
1512
1513 GNUNET_free (room_dir);
1514}
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.
void save_peer_store(const struct GNUNET_MESSENGER_PeerStore *store, const char *path)
Saves peer identities from a peer store into a file.
enum GNUNET_GenericReturnValue GNUNET_DISK_directory_create(const char *dir)
Implementation of "mkdir -p".
Definition: disk.c:497
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(), get_srv_room_peer_store(), GNUNET_asprintf(), GNUNET_assert, GNUNET_DISK_directory_create(), GNUNET_DISK_directory_test(), GNUNET_ERROR_TYPE_DEBUG, GNUNET_free, GNUNET_log, GNUNET_NO, GNUNET_OK, GNUNET_YES, save_list_tunnels(), save_member_store(), save_message_state(), save_message_store(), save_operation_store(), save_peer_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 1518 of file gnunet-service-messenger_room.c.

1519{
1520 char *room_dir;
1521
1522 GNUNET_assert (room);
1523
1524 get_room_data_subdir (room, &room_dir);
1525
1526 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Remove room from directory: %s\n",
1527 room_dir);
1528
1531
1532 GNUNET_free (room_dir);
1533}

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

Referenced by destroy_srv_room().

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