GNUnet  0.11.x
Data Structures | Functions
gnunet-service-messenger_room.c File Reference

GNUnet MESSENGER service. More...

#include "gnunet-service-messenger_room.h"
#include "gnunet-service-messenger_member.h"
#include "gnunet-service-messenger_member_session.h"
#include "gnunet-service-messenger_message_kind.h"
#include "gnunet-service-messenger_message_handle.h"
#include "gnunet-service-messenger_message_send.h"
#include "gnunet-service-messenger_operation.h"
#include "gnunet-service-messenger.h"
#include "gnunet-service-messenger_service.h"
#include "gnunet-service-messenger_tunnel.h"
#include "messenger_api_util.h"
Include dependency graph for gnunet-service-messenger_room.c:

Go to the source code of this file.

Data Structures

struct  GNUNET_MESSENGER_MemberNotify
 
struct  GNUNET_MESSENGER_ClosureSendRoom
 
struct  GNUNET_MESSENGER_MemberSessionCompletion
 
struct  GNUNET_MESSENGER_MemberUpdate
 

Functions

static void idle_request_room_messages (void *cls)
 
struct GNUNET_MESSENGER_SrvRoomcreate_room (struct GNUNET_MESSENGER_SrvHandle *handle, const struct GNUNET_HashCode *key)
 Creates and allocates a new room for a handle with a given key. More...
 
static int iterate_destroy_tunnels (void *cls, const struct GNUNET_PeerIdentity *key, void *value)
 
static void handle_room_messages (struct GNUNET_MESSENGER_SrvRoom *room)
 
void destroy_room (struct GNUNET_MESSENGER_SrvRoom *room)
 Destroys a room and frees its memory fully. More...
 
struct GNUNET_MESSENGER_MemberStoreget_room_member_store (struct GNUNET_MESSENGER_SrvRoom *room)
 Returns the used member store of a given room. More...
 
struct GNUNET_MESSENGER_MessageStoreget_room_message_store (struct GNUNET_MESSENGER_SrvRoom *room)
 Returns the used message store of a given room. More...
 
struct GNUNET_MESSENGER_OperationStoreget_room_operation_store (struct GNUNET_MESSENGER_SrvRoom *room)
 Returns the used operation store of a given room. More...
 
static int send_room_info (struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvHandle *handle, struct GNUNET_MESSENGER_SrvTunnel *tunnel)
 
static void * callback_room_connect (void *cls, struct GNUNET_CADET_Channel *channel, const struct GNUNET_PeerIdentity *source)
 
static int join_room (struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvHandle *handle, struct GNUNET_MESSENGER_Member *member)
 
static void notify_about_members (struct GNUNET_MESSENGER_MemberNotify *notify, struct GNUNET_MESSENGER_MemberSession *session, struct GNUNET_CONTAINER_MultiHashMap *map, int check_permission)
 
static int iterate_notify_about_members (void *cls, const struct GNUNET_IDENTITY_PublicKey *public_key, struct GNUNET_MESSENGER_MemberSession *session)
 
static int join_room_locally (struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvHandle *handle)
 
int check_tunnel_message (void *cls, const struct GNUNET_MessageHeader *header)
 
void handle_tunnel_message (void *cls, const struct GNUNET_MessageHeader *header)
 
void callback_tunnel_disconnect (void *cls, const struct GNUNET_CADET_Channel *channel)
 
int open_room (struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvHandle *handle)
 Tries to open a room for a given handle. More...
 
int enter_room_at (struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvHandle *handle, const struct GNUNET_PeerIdentity *door)
 Connects a tunnel to a hosting peer of a room through a so called door which is represented by a peer identity of a hosting peer. More...
 
struct GNUNET_MQ_Envelopepack_room_message (const struct GNUNET_MESSENGER_SrvRoom *room, const struct GNUNET_MESSENGER_SrvHandle *handle, struct GNUNET_MESSENGER_Message *message, struct GNUNET_HashCode *hash, int mode)
 Packs a message depending on the selected mode into a newly allocated envelope. More...
 
static int iterate_send_room_message (void *cls, const struct GNUNET_PeerIdentity *key, void *value)
 
int update_room_message (struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash)
 
void callback_room_handle_message (struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvHandle *handle, const struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash)
 
int send_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_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_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_room_last_messages (struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvHandle *handle)
 Reduces all current forks inside of the message history of a room to one remaining last message by merging them down. More...
 
void callback_room_deletion (struct GNUNET_MESSENGER_SrvRoom *room, const struct GNUNET_HashCode *hash)
 
void callback_room_merge (struct GNUNET_MESSENGER_SrvRoom *room, const struct GNUNET_HashCode *hash)
 
int delete_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_room_cadet (struct GNUNET_MESSENGER_SrvRoom *room)
 Returns the CADET handle from a rooms service. More...
 
const struct GNUNET_HashCodeget_room_key (const struct GNUNET_MESSENGER_SrvRoom *room)
 Returns the shared secret you need to access a room. More...
 
const struct GNUNET_MESSENGER_SrvTunnelget_room_tunnel (const struct GNUNET_MESSENGER_SrvRoom *room, const struct GNUNET_PeerIdentity *peer)
 Returns a tunnel inside of a room leading towards a given peer if such a tunnel exists, otherwise NULL. More...
 
static int request_room_message_step (struct GNUNET_MESSENGER_SrvRoom *room, const struct GNUNET_HashCode *hash, const struct GNUNET_MESSENGER_MemberSession *session, GNUNET_MESSENGER_MessageRequestCallback callback, void *cls)
 
int request_room_message (struct GNUNET_MESSENGER_SrvRoom *room, const struct GNUNET_HashCode *hash, const struct GNUNET_MESSENGER_MemberSession *session, GNUNET_MESSENGER_MessageRequestCallback callback, void *cls)
 Requests a message from a room identified by a given hash. More...
 
void callback_room_disconnect (struct GNUNET_MESSENGER_SrvRoom *room, void *cls)
 
int callback_verify_room_message (struct GNUNET_MESSENGER_SrvRoom *room, void *cls, struct GNUNET_MESSENGER_Message *message, struct GNUNET_HashCode *hash)
 
void solve_room_member_collisions (struct GNUNET_MESSENGER_SrvRoom *room, const struct GNUNET_IDENTITY_PublicKey *public_key, const struct GNUNET_ShortHashCode *member_id, struct GNUNET_TIME_Absolute timestamp)
 Checks for potential collisions with member ids and solves them changing active handles ids if they use an already used member id (comparing public key and timestamp). More...
 
void rebuild_room_basement_structure (struct GNUNET_MESSENGER_SrvRoom *room)
 Rebuilds the decentralized structure for a room by ensuring all required connections are made depending on the amount of peers and this peers index in the list of them. More...
 
static int iterate_update_member_sessions (void *cls, const struct GNUNET_IDENTITY_PublicKey *public_key, struct GNUNET_MESSENGER_MemberSession *session)
 
static void remove_room_member_session (struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_MemberSession *session)
 
static void get_room_data_subdir (struct GNUNET_MESSENGER_SrvRoom *room, char **dir)
 
void load_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_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...
 

Detailed Description

GNUnet MESSENGER service.

Author
Tobias Frisch

Definition in file gnunet-service-messenger_room.c.

Function Documentation

◆ idle_request_room_messages()

static void idle_request_room_messages ( void *  cls)
static

Definition at line 843 of file gnunet-service-messenger_room.c.

844 {
845  struct GNUNET_MESSENGER_SrvRoom *room = cls;
846 
847  room->idle = NULL;
848 
850  const struct GNUNET_HashCode *hash = get_message_state_merge_hash(&(room->state));
851 
852  if ((hash) &&
853  (GNUNET_MESSENGER_OP_UNKNOWN == get_store_operation_type(operation_store, hash)))
855  operation_store,
856  hash,
859  );
860 
865  cls
866  );
867 }
const struct GNUNET_HashCode * get_message_state_merge_hash(const struct GNUNET_MESSENGER_MessageState *state)
enum GNUNET_MESSENGER_OperationType get_store_operation_type(const struct GNUNET_MESSENGER_OperationStore *store, const struct GNUNET_HashCode *hash)
Returns the type of the active operation under a given hash in a specific operation store.
int use_store_operation(struct GNUNET_MESSENGER_OperationStore *store, const struct GNUNET_HashCode *hash, enum GNUNET_MESSENGER_OperationType type, struct GNUNET_TIME_Relative delay)
Tries to use an operation under a given hash in a specific operation store.
struct GNUNET_MESSENGER_OperationStore * get_room_operation_store(struct GNUNET_MESSENGER_SrvRoom *room)
Returns the used operation store of a given room.
static void idle_request_room_messages(void *cls)
#define GNUNET_MESSENGER_MERGE_DELAY
#define GNUNET_MESSENGER_IDLE_DELAY
@ GNUNET_SCHEDULER_PRIORITY_IDLE
Run when otherwise idle.
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_delayed_with_priority(struct GNUNET_TIME_Relative delay, enum GNUNET_SCHEDULER_Priority priority, GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run with a specified delay.
Definition: scheduler.c:1199
A 512-bit hashcode.
struct GNUNET_SCHEDULER_Task * idle
struct GNUNET_MESSENGER_MessageState state

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

Referenced by create_room().

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◆ create_room()

struct GNUNET_MESSENGER_SrvRoom* create_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]handle Handle
[in]keyKey of room
Returns
New room

Definition at line 46 of file gnunet-service-messenger_room.c.

48 {
49  GNUNET_assert((handle) && (key));
50 
52 
53  room->service = handle->service;
54  room->host = handle;
55  room->port = NULL;
56 
57  GNUNET_memcpy(&(room->key), key, sizeof(struct GNUNET_HashCode));
58 
60 
64 
65  init_list_tunnels (&(room->basement));
66  init_message_state(&(room->state));
67 
68  room->peer_message = NULL;
69 
70  init_list_messages (&(room->handling));
71  room->idle = NULL;
72 
73  if (room->service->dir)
74  load_room (room);
75 
77 
78  return room;
79 }
struct GNUNET_HashCode key
The key used in the DHT.
static struct GNUNET_DNS_Handle * handle
Handle to transport service.
void init_list_messages(struct GNUNET_MESSENGER_ListMessages *messages)
Initializes list of message hashes as empty list.
void init_member_store(struct GNUNET_MESSENGER_MemberStore *store, struct GNUNET_MESSENGER_SrvRoom *room)
Initializes a member store as fully empty connected to a room.
void init_message_state(struct GNUNET_MESSENGER_MessageState *state)
void init_message_store(struct GNUNET_MESSENGER_MessageStore *store)
Initializes a message store as fully empty.
void init_operation_store(struct GNUNET_MESSENGER_OperationStore *store, struct GNUNET_MESSENGER_SrvRoom *room)
Initializes an operation store as fully empty with a given room.
struct GNUNET_MESSENGER_MessageStore * get_room_message_store(struct GNUNET_MESSENGER_SrvRoom *room)
Returns the used message store of a given room.
struct GNUNET_MESSENGER_MemberStore * get_room_member_store(struct GNUNET_MESSENGER_SrvRoom *room)
Returns the used member store of a given room.
void load_room(struct GNUNET_MESSENGER_SrvRoom *room)
Loads the local configuration for a given room of a service which contains the last messages hash and...
#define GNUNET_memcpy(dst, src, n)
Call memcpy() but check for n being 0 first.
@ GNUNET_NO
Definition: gnunet_common.h:94
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_assert(cond)
Use this for fatal errors that cannot be handled.
#define GNUNET_new(type)
Allocate a struct or union of the given type.
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_with_priority(enum GNUNET_SCHEDULER_Priority prio, GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run with a specified priority.
Definition: scheduler.c:1223
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_room_member_store(), get_room_message_store(), get_room_operation_store(), GNUNET_assert, GNUNET_CONTAINER_multipeermap_create(), GNUNET_memcpy, GNUNET_new, GNUNET_NO, GNUNET_SCHEDULER_add_with_priority(), GNUNET_SCHEDULER_PRIORITY_IDLE, handle, GNUNET_MESSENGER_SrvRoom::handling, GNUNET_MESSENGER_SrvRoom::host, GNUNET_MESSENGER_SrvRoom::idle, idle_request_room_messages(), init_list_messages(), init_list_tunnels(), init_member_store(), init_message_state(), init_message_store(), init_operation_store(), key, GNUNET_MESSENGER_SrvRoom::key, load_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(), GNUNET_MESSENGER_enter_room(), GNUNET_MESSENGER_open_room(), and open_service_room().

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◆ iterate_destroy_tunnels()

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

Definition at line 82 of file gnunet-service-messenger_room.c.

85 {
86  struct GNUNET_MESSENGER_SrvTunnel *tunnel = value;
87  destroy_tunnel (tunnel);
88  return GNUNET_YES;
89 }
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
Definition: gnunet_common.h:97

References destroy_tunnel(), GNUNET_YES, and value.

Referenced by destroy_room().

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◆ handle_room_messages()

static void handle_room_messages ( struct GNUNET_MESSENGER_SrvRoom room)
static

Definition at line 959 of file gnunet-service-messenger_room.c.

960 {
961  struct GNUNET_MESSENGER_MessageStore *message_store = get_room_message_store(room);
963 
964  while (room->handling.head)
965  {
966  struct GNUNET_MESSENGER_ListMessage *element = room->handling.head;
967 
968  const struct GNUNET_MESSENGER_Message *message = get_store_message (message_store, &(element->hash));
969 
970  if (!message)
971  goto finish_handling;
972 
973  struct GNUNET_MESSENGER_Member *member = get_store_member_of(member_store, message);
974 
975  if (!member)
976  goto finish_handling;
977 
978  struct GNUNET_MESSENGER_MemberSession *session = get_member_session_of(member, message, &(element->hash));
979 
980  if (session)
981  handle_service_message (room->service, room, session, message, &(element->hash));
982 
983 finish_handling:
984  GNUNET_CONTAINER_DLL_remove(room->handling.head, room->handling.tail, element);
985  GNUNET_free(element);
986  }
987 }
struct GNUNET_MESSENGER_MemberSession * get_member_session_of(struct GNUNET_MESSENGER_Member *member, const struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash)
Returns the member session of a member using a public key which can verify the signature of a given m...
struct GNUNET_MESSENGER_Member * get_store_member_of(struct GNUNET_MESSENGER_MemberStore *store, const struct GNUNET_MESSENGER_Message *message)
Returns the member of a store using a sender id of a given message.
const struct GNUNET_MESSENGER_Message * get_store_message(struct GNUNET_MESSENGER_MessageStore *store, const struct GNUNET_HashCode *hash)
Returns the message from a message store matching a given hash.
void handle_service_message(struct GNUNET_MESSENGER_Service *service, struct GNUNET_MESSENGER_SrvRoom *room, const struct GNUNET_MESSENGER_MemberSession *session, const struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash)
Sends a received or sent message with a given hash to each handle of a service which is currently mem...
#define GNUNET_CONTAINER_DLL_remove(head, tail, element)
Remove an element from a DLL.
#define GNUNET_free(ptr)
Wrapper around free.
struct GNUNET_MESSENGER_ListMessage * head
struct GNUNET_MESSENGER_ListMessage * tail

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

Referenced by callback_room_handle_message(), and destroy_room().

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◆ destroy_room()

void destroy_room ( struct GNUNET_MESSENGER_SrvRoom room)

Destroys a room and frees its memory fully.

Parameters
[in/out]room Room

Definition at line 95 of file gnunet-service-messenger_room.c.

96 {
97  GNUNET_assert(room);
98 
99  if (room->idle)
100  {
102 
103  room->idle = NULL;
104  }
105 
106  if (room->port)
108 
110 
111  handle_room_messages (room);
112 
113  if (room->service->dir)
114  save_room (room);
115 
119 
121 
122  clear_list_tunnels (&(room->basement));
123  clear_message_state(&(room->state));
124 
125  if (room->peer_message)
126  GNUNET_free(room->peer_message);
127 
128  GNUNET_free(room);
129 }
void clear_member_store(struct GNUNET_MESSENGER_MemberStore *store)
Clears a member store, wipes its content and deallocates its memory.
void clear_message_state(struct GNUNET_MESSENGER_MessageState *state)
void clear_message_store(struct GNUNET_MESSENGER_MessageStore *store)
Clears a message store, wipes its content and deallocates its memory.
void clear_operation_store(struct GNUNET_MESSENGER_OperationStore *store)
Clears an operation store, stops all operations and deallocates its memory.
void save_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...
static int iterate_destroy_tunnels(void *cls, const struct GNUNET_PeerIdentity *key, void *value)
static void handle_room_messages(struct GNUNET_MESSENGER_SrvRoom *room)
void GNUNET_CADET_close_port(struct GNUNET_CADET_Port *p)
Close a port opened with GNUNET_CADET_open_port().
Definition: cadet_api.c:808
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:972
void clear_list_tunnels(struct GNUNET_MESSENGER_ListTunnels *tunnels)
Clears the list of tunnels peer identities.

References GNUNET_MESSENGER_SrvRoom::basement, clear_list_tunnels(), clear_member_store(), clear_message_state(), clear_message_store(), clear_operation_store(), GNUNET_MESSENGER_Service::dir, get_room_member_store(), get_room_message_store(), get_room_operation_store(), GNUNET_assert, GNUNET_CADET_close_port(), GNUNET_CONTAINER_multipeermap_destroy(), GNUNET_CONTAINER_multipeermap_iterate(), GNUNET_free, GNUNET_SCHEDULER_cancel(), handle_room_messages(), GNUNET_MESSENGER_SrvRoom::idle, iterate_destroy_tunnels(), GNUNET_MESSENGER_SrvRoom::peer_message, GNUNET_MESSENGER_SrvRoom::port, GNUNET_MESSENGER_SrvTunnel::room, save_room(), GNUNET_MESSENGER_SrvRoom::service, GNUNET_MESSENGER_SrvRoom::state, and GNUNET_MESSENGER_SrvRoom::tunnels.

Referenced by close_handle_room(), close_service_room(), entry_service_room(), GNUNET_MESSENGER_enter_room(), GNUNET_MESSENGER_open_room(), iterate_destroy_room(), iterate_destroy_rooms(), and open_service_room().

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◆ get_room_member_store()

struct GNUNET_MESSENGER_MemberStore* get_room_member_store ( struct GNUNET_MESSENGER_SrvRoom room)

Returns the used member store of a given room.

Parameters
[in/out]room Room
Returns
Member store

Definition at line 132 of file gnunet-service-messenger_room.c.

133 {
134  GNUNET_assert(room);
135 
136  return &(room->member_store);
137 }
struct GNUNET_MESSENGER_MemberStore member_store

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

Referenced by callback_found_message(), callback_room_handle_message(), check_room_peer_status(), create_room(), destroy_room(), get_handle_member_session(), handle_get_message(), handle_room_messages(), join_room_locally(), load_room(), open_room(), recv_message_info(), recv_message_request(), save_room(), and solve_room_member_collisions().

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◆ get_room_message_store()

struct GNUNET_MESSENGER_MessageStore* get_room_message_store ( struct GNUNET_MESSENGER_SrvRoom room)

Returns the used message store of a given room.

Parameters
[in/out]room Room
Returns
Message store

Definition at line 140 of file gnunet-service-messenger_room.c.

141 {
142  GNUNET_assert(room);
143 
144  return &(room->message_store);
145 }
struct GNUNET_MESSENGER_MessageStore message_store

References GNUNET_assert, and GNUNET_MESSENGER_SrvRoom::message_store.

Referenced by callback_room_deletion(), callback_verify_room_message(), check_member_session_completion(), check_room_peer_status(), create_room(), delete_room_message(), destroy_room(), forward_about_members(), handle_room_messages(), load_room(), notify_about_members(), request_room_message_step(), save_room(), update_room_message(), and update_tunnel_last_message().

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◆ get_room_operation_store()

struct GNUNET_MESSENGER_OperationStore* get_room_operation_store ( struct GNUNET_MESSENGER_SrvRoom room)

Returns the used operation store of a given room.

Parameters
[in/out]room Room
Returns
Operation store

Definition at line 148 of file gnunet-service-messenger_room.c.

149 {
150  GNUNET_assert(room);
151 
152  return &(room->operation_store);
153 }
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_room(), delete_room_message(), destroy_room(), idle_request_room_messages(), load_room(), save_room(), send_message_request(), update_room_message(), and update_tunnel_last_message().

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◆ send_room_info()

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

Definition at line 156 of file gnunet-service-messenger_room.c.

159 {
160  if ((!handle) || (!is_tunnel_connected (tunnel)))
161  return GNUNET_NO;
162 
164 }
const struct GNUNET_MESSENGER_Ego * get_handle_ego(const struct GNUNET_MESSENGER_SrvHandle *handle)
Returns the EGO used by a given handle.
struct GNUNET_MESSENGER_Message * create_message_info(const struct GNUNET_MESSENGER_Ego *ego)
Creates and allocates a new info message containing the hosts EGO public key and a newly generated un...
int send_tunnel_message(struct GNUNET_MESSENGER_SrvTunnel *tunnel, void *handle, struct GNUNET_MESSENGER_Message *message)
Sends a message by packing it automatically into an envelope and passing it through the tunnel.
int is_tunnel_connected(const struct GNUNET_MESSENGER_SrvTunnel *tunnel)
Returns the status of a currently bound channel of a tunnel.

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

Referenced by callback_room_connect().

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◆ callback_room_connect()

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

Definition at line 167 of file gnunet-service-messenger_room.c.

170 {
171  struct GNUNET_MESSENGER_SrvRoom *room = cls;
172 
174 
175  if ((tunnel) &&
178  {
179  destroy_tunnel (tunnel);
180  tunnel = NULL;
181  }
182 
183  if (!tunnel)
184  {
186  return NULL;
187  }
188 
189  bind_tunnel(tunnel, channel);
190 
191  GNUNET_log(GNUNET_ERROR_TYPE_INFO, "New tunnel in room (%s) established to peer: %s\n",
193 
194  if (GNUNET_YES == send_room_info (room, room->host, tunnel))
195  return tunnel;
196 
197  disconnect_tunnel (tunnel);
198 
200  destroy_tunnel (tunnel);
201 
202  return NULL;
203 }
static GstElement * source
Appsrc instance into which we write data for the pipeline.
const struct GNUNET_HashCode * get_room_key(const struct GNUNET_MESSENGER_SrvRoom *room)
Returns the shared secret you need to access a room.
static int send_room_info(struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvHandle *handle, struct GNUNET_MESSENGER_SrvTunnel *tunnel)
struct GNUNET_MESSENGER_SrvTunnel * create_tunnel(struct GNUNET_MESSENGER_SrvRoom *room, const struct GNUNET_PeerIdentity *door)
Creates and allocates a tunnel of a room to a specific peer identity (called door).
void bind_tunnel(struct GNUNET_MESSENGER_SrvTunnel *tunnel, struct GNUNET_CADET_Channel *channel)
Binds a CADET channel to a tunnel and replaces its channel the tunnel is currently bound to if necess...
void disconnect_tunnel(struct GNUNET_MESSENGER_SrvTunnel *tunnel)
Disconnects and unbinds a channel from a tunnel.
#define GNUNET_log(kind,...)
@ GNUNET_OK
Definition: gnunet_common.h:95
int 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.
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.
@ 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).
const char * GNUNET_h2s(const struct GNUNET_HashCode *hc)
Convert a hash value to a string (for printing debug messages).
@ GNUNET_ERROR_TYPE_INFO
void delayed_disconnect_channel(struct GNUNET_CADET_Channel *channel)
Starts an urgent task to close a CADET channel asynchronously.
struct GNUNET_CADET_Channel * channel
struct GNUNET_MESSENGER_SrvRoom * room

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

Referenced by open_room().

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◆ join_room()

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

Definition at line 206 of file gnunet-service-messenger_room.c.

209 {
210  GNUNET_assert((room) && (handle) && (member));
211 
212  GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Joining room: %s (%s)\n", GNUNET_h2s (get_room_key (room)),
213  GNUNET_sh2s (get_member_id(member)));
214 
216  return GNUNET_NO;
217 
219 
220  if (!message)
221  {
222  GNUNET_log(GNUNET_ERROR_TYPE_ERROR, "Your join message could not be created!\n");
223 
224  return GNUNET_NO;
225  }
226 
227  return send_room_message (room, handle, message);
228 }
int change_handle_member_id(struct GNUNET_MESSENGER_SrvHandle *handle, const struct GNUNET_HashCode *key, const struct GNUNET_ShortHashCode *unique_id)
Changes the member id of a given handle in a specific room to match a unique_id and returns GNUNET_OK...
const struct GNUNET_ShortHashCode * get_member_id(const struct GNUNET_MESSENGER_Member *member)
Returns the current id of a given member.
struct GNUNET_MESSENGER_Message * create_message_join(const struct GNUNET_MESSENGER_Ego *ego)
Creates and allocates a new join message containing the clients EGO public key.
int send_room_message(struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvHandle *handle, struct GNUNET_MESSENGER_Message *message)
Sends a message from a given handle into a room.
const char * GNUNET_sh2s(const struct GNUNET_ShortHashCode *shc)
Convert a short hash value to a string (for printing debug messages).
@ GNUNET_ERROR_TYPE_ERROR
@ GNUNET_ERROR_TYPE_DEBUG

References change_handle_member_id(), create_message_join(), get_handle_ego(), get_member_id(), get_room_key(), GNUNET_assert, GNUNET_ERROR_TYPE_DEBUG, GNUNET_ERROR_TYPE_ERROR, GNUNET_h2s(), GNUNET_log, GNUNET_NO, GNUNET_OK, GNUNET_sh2s(), handle, GNUNET_MESSENGER_SrvTunnel::room, and send_room_message().

Referenced by join_room_locally(), and open_room().

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◆ notify_about_members()

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

Definition at line 238 of file gnunet-service-messenger_room.c.

242 {
243  if (session->prev)
245 
246  struct GNUNET_MESSENGER_MessageStore *message_store = get_room_message_store(notify->room);
247  struct GNUNET_MESSENGER_ListMessage *element;
248 
249  for (element = session->messages.head; element; element = element->next)
250  {
252  continue;
253 
254  if ((GNUNET_YES == check_permission) &&
255  (GNUNET_YES != check_member_session_history(notify->session, &(element->hash), GNUNET_NO)))
256  continue;
257 
258  if (GNUNET_OK != GNUNET_CONTAINER_multihashmap_put(map, &(element->hash), NULL,
260  GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "Notification of session message could be duplicated!\n");
261 
262  const struct GNUNET_MESSENGER_Message *message = get_store_message(message_store, &(element->hash));
263 
264  if (message)
265  notify_handle_message (notify->handle, get_room_key(notify->room), session, message, &(element->hash));
266  }
267 }
static struct GNUNET_PEERINFO_NotifyContext * notify
Handle to the peerinfo notify service (NULL until we've connected to it).
static struct GNUNET_CONTAINER_MultiPeerMap * map
Handle to the map used to store old latency values for peers.
void notify_handle_message(struct GNUNET_MESSENGER_SrvHandle *handle, const struct GNUNET_HashCode *key, const struct GNUNET_MESSENGER_MemberSession *session, const struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash)
Notifies the handle that a new message was received or sent.
int check_member_session_history(const struct GNUNET_MESSENGER_MemberSession *session, const struct GNUNET_HashCode *hash, int ownership)
Checks the history of a session for a specific message which is identified by its hash and if the own...
static void notify_about_members(struct GNUNET_MESSENGER_MemberNotify *notify, struct GNUNET_MESSENGER_MemberSession *session, struct GNUNET_CONTAINER_MultiHashMap *map, int check_permission)
int GNUNET_CONTAINER_multihashmap_contains(const struct GNUNET_CONTAINER_MultiHashMap *map, const struct GNUNET_HashCode *key)
Check if the map contains any value under the given key (including values that are NULL).
int GNUNET_CONTAINER_multihashmap_put(struct GNUNET_CONTAINER_MultiHashMap *map, const struct GNUNET_HashCode *key, void *value, enum GNUNET_CONTAINER_MultiHashMapOption opt)
Store a key-value pair in the map.
@ GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST
, ' bother checking if a value already exists (faster than GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE...
@ GNUNET_ERROR_TYPE_WARNING
struct GNUNET_MESSENGER_ListMessage * next
struct GNUNET_MESSENGER_MemberSession * prev
struct GNUNET_MESSENGER_ListMessages messages

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

Referenced by iterate_notify_about_members().

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◆ iterate_notify_about_members()

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

Definition at line 270 of file gnunet-service-messenger_room.c.

273 {
275 
276  if ((notify->session == session) || (GNUNET_YES == is_member_session_completed(session)))
277  return GNUNET_YES;
278 
280 
282 
284  return GNUNET_YES;
285 }
int is_member_session_completed(const struct GNUNET_MESSENGER_MemberSession *session)
Returns if the given member session has been completed.
struct GNUNET_CONTAINER_MultiHashMap * GNUNET_CONTAINER_multihashmap_create(unsigned int len, int do_not_copy_keys)
Create a multi hash map.
void GNUNET_CONTAINER_multihashmap_destroy(struct GNUNET_CONTAINER_MultiHashMap *map)
Destroy a hash map.
Internal representation of the hash map.
struct GNUNET_MESSENGER_MemberSession * session

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

Referenced by join_room_locally().

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◆ join_room_locally()

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

Definition at line 288 of file gnunet-service-messenger_room.c.

290 {
291  const struct GNUNET_ShortHashCode *member_id = get_handle_member_id (handle, get_room_key(room));
292 
294  struct GNUNET_MESSENGER_Member *member = add_store_member(member_store, member_id);
295 
296  if (GNUNET_NO == join_room (room, handle, member))
297  return GNUNET_NO;
298 
299  const struct GNUNET_MESSENGER_Ego *ego = get_handle_ego(handle);
300  struct GNUNET_MESSENGER_MemberSession *session = get_member_session (member, &(ego->pub));
301 
302  if (!session)
303  {
304  GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "A valid session is required to join a room!\n");
305  return GNUNET_NO;
306  }
307 
309 
310  notify.room = room;
311  notify.handle = handle;
312  notify.session = session;
313 
315 
316  return GNUNET_YES;
317 }
const struct GNUNET_ShortHashCode * get_handle_member_id(const struct GNUNET_MESSENGER_SrvHandle *handle, const struct GNUNET_HashCode *key)
Returns the member id of a given handle in a specific room.
struct GNUNET_MESSENGER_MemberSession * get_member_session(const struct GNUNET_MESSENGER_Member *member, const struct GNUNET_IDENTITY_PublicKey *public_key)
Returns the member session of a member identified by a given public key.
int iterate_store_members(struct GNUNET_MESSENGER_MemberStore *store, GNUNET_MESSENGER_MemberIteratorCallback it, void *cls)
Iterate through all member sessions currently connected to the members of the given member store and ...
struct GNUNET_MESSENGER_Member * add_store_member(struct GNUNET_MESSENGER_MemberStore *store, const struct GNUNET_ShortHashCode *id)
Adds a member to a store under a specific id and returns it on success.
static int join_room(struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvHandle *handle, struct GNUNET_MESSENGER_Member *member)
static int iterate_notify_about_members(void *cls, const struct GNUNET_IDENTITY_PublicKey *public_key, struct GNUNET_MESSENGER_MemberSession *session)
struct GNUNET_IDENTITY_PublicKey pub
struct GNUNET_MESSENGER_SrvRoom * room
A 256-bit hashcode.

References add_store_member(), get_handle_ego(), get_handle_member_id(), get_member_session(), get_room_key(), get_room_member_store(), GNUNET_ERROR_TYPE_WARNING, GNUNET_log, GNUNET_NO, GNUNET_YES, handle, iterate_notify_about_members(), iterate_store_members(), join_room(), GNUNET_MESSENGER_MemberSession::member, notify, GNUNET_MESSENGER_Ego::pub, GNUNET_MESSENGER_MemberStore::room, GNUNET_MESSENGER_MemberNotify::room, and GNUNET_MESSENGER_MemberNotify::session.

Referenced by enter_room_at(), and open_room().

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◆ check_tunnel_message()

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

Definition at line 112 of file gnunet-service-messenger_tunnel.c.

114 {
115  struct GNUNET_MESSENGER_SrvTunnel *tunnel = cls;
116 
117  if (!tunnel)
118  return GNUNET_SYSERR;
119 
120  const uint16_t length = ntohs (header->size) - sizeof(*header);
121  const char *buffer = (const char*) &header[1];
122 
123  struct GNUNET_MESSENGER_Message message;
124 
126  {
127  GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "Tunnel error: Message too short! (%d)\n", length);
128  return GNUNET_SYSERR;
129  }
130 
131  uint16_t padding = 0;
132 
133  if (GNUNET_YES != decode_message (&message, length, buffer, GNUNET_YES, &padding))
134  {
135  GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "Tunnel error: Decoding failed!\n");
136  return GNUNET_SYSERR;
137  }
138 
139  struct GNUNET_HashCode hash;
140  hash_message (&message, length - padding, buffer, &hash);
141 
142  return callback_verify_room_message (tunnel->room, cls, &message, &hash);
143 }
int callback_verify_room_message(struct GNUNET_MESSENGER_SrvRoom *room, void *cls, struct GNUNET_MESSENGER_Message *message, struct GNUNET_HashCode *hash)
@ GNUNET_SYSERR
Definition: gnunet_common.h:93
@ GNUNET_MESSENGER_KIND_UNKNOWN
The unknown kind.
int decode_message(struct GNUNET_MESSENGER_Message *message, uint16_t length, const char *buffer, int include_signature, uint16_t *padding)
Decodes a message from a given buffer of a maximal length in bytes.
void hash_message(const struct GNUNET_MESSENGER_Message *message, uint16_t length, const char *buffer, struct GNUNET_HashCode *hash)
Calculates a hash of a given buffer with a length in bytes from a message.
uint16_t get_message_kind_size(enum GNUNET_MESSENGER_MessageKind kind)
Returns the minimal size in bytes to encode a message of a specific kind.
uint16_t size
The length of the struct (in bytes, including the length field itself), in big-endian format.

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

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◆ handle_tunnel_message()

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

Definition at line 175 of file gnunet-service-messenger_tunnel.c.

176 {
177  struct GNUNET_MESSENGER_SrvTunnel *tunnel = cls;
178 
179  const uint16_t length = ntohs (header->size) - sizeof(*header);
180  const char *buffer = (const char*) &header[1];
181 
182  struct GNUNET_MESSENGER_Message message;
183  struct GNUNET_HashCode hash;
184 
185  uint16_t padding = 0;
186 
187  decode_message (&message, length, buffer, GNUNET_YES, &padding);
188  hash_message (&message, length - padding, buffer, &hash);
189 
190  GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Got message of kind: %s!\n",
191  GNUNET_MESSENGER_name_of_kind(message.header.kind));
192 
193  if (!tunnel)
194  return;
195 
196  const int new_message = update_room_message (
197  tunnel->room, copy_message (&message), &hash
198  );
199 
200  if (GNUNET_YES != new_message)
201  goto receive_done;
202 
203  update_tunnel_last_message (tunnel, &hash);
204 
205  int forward_message = GNUNET_YES;
206 
207  switch (message.header.kind)
208  {
210  forward_message = recv_message_info (tunnel->room, tunnel, &message, &hash);
211  break;
213  forward_message = recv_message_peer (tunnel->room, tunnel, &message, &hash);
214  break;
216  forward_message = recv_message_request (tunnel->room, tunnel, &message, &hash);
217  break;
218  default:
219  break;
220  }
221 
222  if (GNUNET_YES == forward_message)
223  {
224  forward_room_message (tunnel->room, tunnel, &message, &hash);
225  callback_room_handle_message (tunnel->room, NULL, &message, &hash);
226  }
227 
228 receive_done:
230 }
int recv_message_peer(struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvTunnel *tunnel, const struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash)
Handles a received peer message to link it to its origin tunnel if the peer identity matches.
int recv_message_request(struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvTunnel *tunnel, const struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash)
Handles a received request message by checking for the requested message and forwarding it back if th...
int recv_message_info(struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvTunnel *tunnel, const struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash)
Handles a received info message to change the current member id to the one generated by the host conn...
void forward_room_message(struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvTunnel *tunnel, struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash)
Forwards a message with a given hash to a specific tunnel inside of a room.
void callback_room_handle_message(struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvHandle *handle, const struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash)
int update_room_message(struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash)
static void update_tunnel_last_message(struct GNUNET_MESSENGER_SrvTunnel *tunnel, const struct GNUNET_HashCode *hash)
void GNUNET_CADET_receive_done(struct GNUNET_CADET_Channel *channel)
Send an ack on the channel to confirm the processing of a message.
Definition: cadet_api.c:888
const char * GNUNET_MESSENGER_name_of_kind(enum GNUNET_MESSENGER_MessageKind kind)
Get the name of a message kind.
Definition: messenger_api.c:35
@ GNUNET_MESSENGER_KIND_INFO
The info kind.
@ GNUNET_MESSENGER_KIND_REQUEST
The request kind.
@ GNUNET_MESSENGER_KIND_PEER
The peer kind.
struct GNUNET_MESSENGER_Message * copy_message(const struct GNUNET_MESSENGER_Message *message)
Creates and allocates a copy of a given message.

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

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◆ callback_tunnel_disconnect()

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

Definition at line 92 of file gnunet-service-messenger_tunnel.c.

94 {
95  struct GNUNET_MESSENGER_SrvTunnel *tunnel = cls;
96 
97  if (tunnel)
98  {
99  tunnel->channel = NULL;
100 
101  callback_room_disconnect (tunnel->room, cls);
102  }
103 }
void callback_room_disconnect(struct GNUNET_MESSENGER_SrvRoom *room, void *cls)

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

Referenced by connect_tunnel(), and open_room().

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◆ open_room()

int open_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]room Room
[in/out]handle Handle
Returns
GNUNET_YES on success, GNUNET_NO on failure.

Definition at line 332 of file gnunet-service-messenger_room.c.

334 {
335  GNUNET_assert((room) && (handle));
336 
337  if (room->port)
338  return join_room_locally (room, handle);
339 
340  struct GNUNET_CADET_Handle *cadet = get_room_cadet (room);
341  const struct GNUNET_HashCode *key = get_room_key (room);
342 
344  struct GNUNET_MessageHeader, NULL),
346 
347  struct GNUNET_HashCode port;
350  handlers);
351 
352  if (room->port)
353  GNUNET_log(GNUNET_ERROR_TYPE_INFO, "Port of room (%s) was opened!\n",
354  GNUNET_h2s(get_room_key(room)));
355  else
356  GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "Port of room (%s) could not be opened!\n",
357  GNUNET_h2s(get_room_key(room)));
358 
359  const struct GNUNET_ShortHashCode *member_id = get_handle_member_id (handle, get_room_key(room));
360 
362  struct GNUNET_MESSENGER_Member *member = get_store_member(member_store, member_id);
363 
364  if (member)
365  goto exit_open_room;
366 
367  member = add_store_member(member_store, member_id);
368 
369  if ((GNUNET_NO == join_room (room, handle, member)) && (room->port))
370  {
371  GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "You could not join the room, therefore it keeps closed!\n");
372 
374  room->port = NULL;
375 
376  return GNUNET_NO;
377  }
378 
379 exit_open_room:
380  return (room->port ? send_room_message (room, handle, create_message_peer (room->service)) : GNUNET_NO);
381 }
static uint16_t port
Port number.
Definition: gnunet-bcd.c:83
static struct GNUNET_CADET_MessageHandler handlers[]
Handlers, for diverse services.
static struct GNUNET_CADET_Handle * cadet
Handle for cadet.
struct GNUNET_MESSENGER_Member * get_store_member(const struct GNUNET_MESSENGER_MemberStore *store, const struct GNUNET_ShortHashCode *id)
Returns the member in a store identified by a given id.
struct GNUNET_MESSENGER_Message * create_message_peer(const struct GNUNET_MESSENGER_Service *service)
Creates and allocates a new peer message containing a services peer identity.
static int join_room_locally(struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvHandle *handle)
static void * callback_room_connect(void *cls, struct GNUNET_CADET_Channel *channel, const struct GNUNET_PeerIdentity *source)
void callback_tunnel_disconnect(void *cls, const struct GNUNET_CADET_Channel *channel)
struct GNUNET_CADET_Handle * get_room_cadet(struct GNUNET_MESSENGER_SrvRoom *room)
Returns the CADET handle from a rooms service.
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:970
#define GNUNET_MQ_handler_end()
End-marker for the handlers array.
#define GNUNET_MQ_hd_var_size(name, code, str, ctx)
#define GNUNET_MESSAGE_TYPE_CADET_CLI
Traffic (net-cat style) used by the Command Line Interface.
void convert_messenger_key_to_port(const struct GNUNET_HashCode *key, struct GNUNET_HashCode *port)
Converts a Messenger service key of a room to the specific port which gets used for the CADET channel...
Opaque handle to the service.
Definition: cadet_api.c:39
Message handler for a specific message type.
Header for all communications.

References add_store_member(), cadet, callback_room_connect(), callback_tunnel_disconnect(), convert_messenger_key_to_port(), create_message_peer(), get_handle_member_id(), get_room_cadet(), get_room_key(), get_room_member_store(), get_store_member(), GNUNET_assert, GNUNET_CADET_close_port(), GNUNET_CADET_open_port(), 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, handle, handlers, join_room(), join_room_locally(), key, port, GNUNET_MESSENGER_SrvRoom::port, GNUNET_MESSENGER_MemberStore::room, GNUNET_MESSENGER_MemberNotify::room, send_room_message(), and GNUNET_MESSENGER_SrvRoom::service.

Referenced by open_service_room().

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◆ enter_room_at()

int enter_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]room Room
[in/out]handle Handle
[in]doorPeer identity
Returns
GNUNET_YES on success, GNUNET_NO on failure.

Definition at line 384 of file gnunet-service-messenger_room.c.

387 {
388  GNUNET_assert((room) && (handle) && (door));
389 
390  struct GNUNET_PeerIdentity peer;
391 
392  if ((GNUNET_OK == get_service_peer_identity (room->service, &peer)) &&
393  (0 == GNUNET_memcmp(&peer, door)))
394  return join_room_locally (room, handle);
395 
397 
398  if (!tunnel)
399  {
400  tunnel = create_tunnel (room, door);
401 
404  {
405  GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "You could not connect to that door!\n");
406  destroy_tunnel (tunnel);
407  return GNUNET_NO;
408  }
409  }
410 
411  if (GNUNET_SYSERR == connect_tunnel (tunnel))
412  {
413  GNUNET_log(GNUNET_ERROR_TYPE_ERROR, "Connection failure during entrance!\n");
415  destroy_tunnel (tunnel);
416  return GNUNET_NO;
417  }
418 
419  return join_room_locally (room, handle);
420 }
int get_service_peer_identity(const struct GNUNET_MESSENGER_Service *service, struct GNUNET_PeerIdentity *peer)
Tries to write the peer identity of the peer running a service on to the peer parameter.
int connect_tunnel(struct GNUNET_MESSENGER_SrvTunnel *tunnel)
Tries to connect a tunnel by creating a new CADET channel and binding it.
#define GNUNET_memcmp(a, b)
Compare memory in a and b, where both must be of the same pointer type.
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.
The identity of the host (wraps the signing key of the peer).
struct GNUNET_TESTBED_Peer * peer
The peer associated with this model.

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

Referenced by entry_service_room().

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◆ pack_room_message()

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

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

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

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

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

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

Definition at line 423 of file gnunet-service-messenger_room.c.

428 {
429  GNUNET_assert((room) && (handle) && (message) && (hash));
430 
432 
433  const struct GNUNET_ShortHashCode *id = get_handle_member_id (handle, get_room_key(room));
434 
435  GNUNET_assert(id);
436 
437  GNUNET_memcpy(&(message->header.sender_id), id, sizeof(struct GNUNET_ShortHashCode));
438  get_message_state_chain_hash (&(room->state), &(message->header.previous));
439 
440  return pack_message (message, hash, get_handle_ego (handle), mode);
441 }
void get_message_state_chain_hash(const struct GNUNET_MESSENGER_MessageState *state, struct GNUNET_HashCode *hash)
static enum @8 mode
Should we do a PUT (mode = 0) or GET (mode = 1);.
struct GNUNET_TIME_Absolute GNUNET_TIME_absolute_get(void)
Get the current time.
Definition: time.c:86
struct GNUNET_TIME_AbsoluteNBO GNUNET_TIME_absolute_hton(struct GNUNET_TIME_Absolute a)
Convert absolute time to network byte order.
Definition: time.c:464
struct GNUNET_MQ_Envelope * pack_message(struct GNUNET_MESSENGER_Message *message, struct GNUNET_HashCode *hash, const struct GNUNET_MESSENGER_Ego *ego, int mode)
Encodes the message to pack it into a newly allocated envelope if mode is equal to GNUNET_MESSENGER_P...
struct GNUNET_HashCode previous
The hash of the previous message from the senders perspective.
struct GNUNET_TIME_AbsoluteNBO timestamp
The timestamp of the message.
struct GNUNET_ShortHashCode sender_id
The senders id inside of the room the message was sent in.
struct GNUNET_MESSENGER_MessageHeader header
Header.

References get_handle_ego(), get_handle_member_id(), get_message_state_chain_hash(), get_room_key(), GNUNET_assert, GNUNET_memcpy, GNUNET_TIME_absolute_get(), GNUNET_TIME_absolute_hton(), handle, GNUNET_MESSENGER_Message::header, mode, pack_message(), GNUNET_MESSENGER_MessageHeader::previous, GNUNET_MESSENGER_MessageHeader::sender_id, GNUNET_MESSENGER_SrvRoom::state, and GNUNET_MESSENGER_MessageHeader::timestamp.

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

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◆ iterate_send_room_message()

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

Definition at line 454 of file gnunet-service-messenger_room.c.

457 {
458  struct GNUNET_MESSENGER_SrvTunnel *tunnel = value;
459 
460  if ((!is_tunnel_connected (tunnel)) ||
462  return GNUNET_YES;
463 
464  struct GNUNET_MESSENGER_ClosureSendRoom *closure = cls;
465 
466  if (tunnel == closure->exclude)
467  return GNUNET_YES;
468 
469  struct GNUNET_MQ_Envelope *env = NULL;
470 
471  if (closure->packed == GNUNET_NO)
472  {
473  env = pack_room_message (closure->room, closure->handle, closure->message, closure->hash,
475 
476  if (env)
477  closure->packed = GNUNET_YES;
478  }
479  else
481 
482  if (env)
483  send_tunnel_envelope (tunnel, env, closure->hash);
484 
485  return GNUNET_YES;
486 }
struct GNUNET_MQ_Envelope * env
Definition: 005.c:1
struct GNUNET_MQ_Envelope * pack_room_message(const struct GNUNET_MESSENGER_SrvRoom *room, const struct GNUNET_MESSENGER_SrvHandle *handle, struct GNUNET_MESSENGER_Message *message, struct GNUNET_HashCode *hash, int mode)
Packs a message depending on the selected mode into a newly allocated envelope.
void send_tunnel_envelope(struct GNUNET_MESSENGER_SrvTunnel *tunnel, struct GNUNET_MQ_Envelope *env, const struct GNUNET_HashCode *hash)
Sends an envelope containing a message with a given hash through a tunnel.
uint32_t get_tunnel_messenger_version(const struct GNUNET_MESSENGER_SrvTunnel *tunnel)
Returns the current messenger version the peer connected via a given tunnel has reported to be using ...
#define GNUNET_MESSENGER_VERSION
Version number of GNUnet Messenger API.
#define GNUNET_MESSENGER_PACK_MODE_ENVELOPE
struct GNUNET_MESSENGER_SrvHandle * handle
struct GNUNET_MESSENGER_Message * message
struct GNUNET_MESSENGER_SrvTunnel * exclude
struct GNUNET_MESSENGER_SrvRoom * room

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

Referenced by forward_room_message(), and send_room_message().

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◆ update_room_message()

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

Definition at line 990 of file gnunet-service-messenger_room.c.

993 {
994  GNUNET_assert((room) && (message) && (hash));
995 
997 
998  const int requested = (GNUNET_MESSENGER_OP_REQUEST == get_store_operation_type(operation_store, hash)?
1000  );
1001 
1002  if (GNUNET_YES == requested)
1003  cancel_store_operation(operation_store, hash);
1004 
1005  struct GNUNET_MESSENGER_MessageStore *message_store = get_room_message_store(room);
1006 
1007  const struct GNUNET_MESSENGER_Message *old_message = get_store_message (message_store, hash);
1008 
1009  GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Handle a message in room (%s).\n", GNUNET_h2s (get_room_key(room)));
1010 
1011  if ((old_message) || (GNUNET_OK != put_store_message (message_store, hash, message)))
1012  {
1013  if (old_message != message)
1014  destroy_message(message);
1015 
1016  GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Duplicate message got dropped!\n");
1017  return GNUNET_NO;
1018  }
1019 
1020  update_message_state(&(room->state), requested, message, hash);
1021 
1022  if ((GNUNET_YES == requested) ||
1023  (GNUNET_MESSENGER_KIND_INFO == message->header.kind) ||
1025  return GNUNET_YES;
1026 
1027  if ((GNUNET_MESSENGER_KIND_MERGE == message->header.kind) &&
1028  (GNUNET_MESSENGER_OP_MERGE == get_store_operation_type(operation_store, &(message->body.merge.previous))))
1029  cancel_store_operation(operation_store, &(message->body.merge.previous));
1030 
1031  if (GNUNET_MESSENGER_OP_MERGE == get_store_operation_type(operation_store, &(message->header.previous)))
1032  cancel_store_operation(operation_store, &(message->header.previous));
1033 
1034  return GNUNET_YES;
1035 }
void update_message_state(struct GNUNET_MESSENGER_MessageState *state, int requested, const struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash)
int put_store_message(struct GNUNET_MESSENGER_MessageStore *store, const struct GNUNET_HashCode *hash, struct GNUNET_MESSENGER_Message *message)
Stores a message into the message store.
void cancel_store_operation(struct GNUNET_MESSENGER_OperationStore *store, const struct GNUNET_HashCode *hash)
Stops any active operation under a given hash in a specific operation store.
@ GNUNET_MESSENGER_KIND_MERGE
The merge kind.
void destroy_message(struct GNUNET_MESSENGER_Message *message)
Destroys a message and frees its memory fully.
struct GNUNET_MESSENGER_MessageMerge merge
enum GNUNET_MESSENGER_MessageKind kind
The kind of the message.
struct GNUNET_HashCode previous
The hash of a second previous message.
struct GNUNET_MESSENGER_MessageBody body
Body.

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

Referenced by handle_tunnel_message(), and send_room_message().

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◆ callback_room_handle_message()

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

Definition at line 1082 of file gnunet-service-messenger_room.c.

1086 {
1088  struct GNUNET_MESSENGER_Member *member = get_store_member_of(member_store, message);
1089 
1090  GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Callback for message (%s)\n", GNUNET_h2s (hash));
1091 
1092  if (!member)
1093  {
1094  GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "Message handling dropped: Member is missing!\n");
1095  return;
1096  }
1097 
1098  struct GNUNET_MESSENGER_MemberSession *session = get_member_session_of(member, message, hash);
1099 
1100  if (!session)
1101  {
1102  GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "Message handling dropped: Session is missing!\n");
1103  return;
1104  }
1105 
1106  struct GNUNET_MESSENGER_MemberUpdate update;
1107  update.message = message;
1108  update.hash = hash;
1109 
1110  update.head = NULL;
1111  update.tail = NULL;
1112 
1113  iterate_store_members(member_store, iterate_update_member_sessions, &update);
1114 
1115  while (update.head)
1116  {
1117  struct GNUNET_MESSENGER_MemberSessionCompletion *element = update.head;
1118 
1119  remove_room_member_session (room, element->session);
1120 
1121  GNUNET_CONTAINER_DLL_remove(update.head, update.tail, element);
1122  GNUNET_free (element);
1123  }
1124 
1125  const int start_handle = room->handling.head ? GNUNET_NO : GNUNET_YES;
1126 
1127  add_to_list_messages (&(room->handling), hash);
1128 
1129  switch (message->header.kind)
1130  {
1132  handle_message_join (room, session, message, hash);
1133  break;
1135  handle_message_leave (room, session, message, hash);
1136  break;
1138  handle_message_name (room, session, message, hash);
1139  break;
1141  handle_message_key (room, session, message, hash);
1142  break;
1144  handle_message_peer (room, session, message, hash);
1145  break;
1147  handle_message_id (room, session, message, hash);
1148  break;
1150  handle_message_miss (room, session, message, hash);
1151  break;
1153  handle_message_delete (room, session, message, hash);
1154  break;
1155  default:
1156  break;
1157  }
1158 
1159  if (GNUNET_YES == start_handle)
1160  handle_room_messages (room);
1161 }
void add_to_list_messages(struct GNUNET_MESSENGER_ListMessages *messages, const struct GNUNET_HashCode *hash)
Adds a specific hash from a message to the end of the list.
void handle_message_key(struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_MemberSession *session, const struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash)
Handles a received or sent key message to change the key of a member and rearrange the contacts accor...
void handle_message_peer(struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_MemberSession *session, const struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash)
Handles a received or sent peer message to make changes of the basement in the room.
void handle_message_join(struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_MemberSession *session, const struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash)
Handles a received or sent join message to make changes of current member information.
void handle_message_miss(struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_MemberSession *session, const struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash)
Handles a received or sent miss message to drop a peer from the basement in the room.
void handle_message_id(struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_MemberSession *session, const struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash)
Handles a received or sent id message to change a members id.
void handle_message_name(struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_MemberSession *session, const struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash)
Handles a received or sent name message to rename a current member.
void handle_message_leave(struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_MemberSession *session, const struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash)
Handles a received or sent leave message to make changes of current member information.
void handle_message_delete(struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_MemberSession *session, const struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash)
Handles a received or sent delete message to delete a specific message from the store.
static void remove_room_member_session(struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_MemberSession *session)
static int iterate_update_member_sessions(void *cls, const struct GNUNET_IDENTITY_PublicKey *public_key, struct GNUNET_MESSENGER_MemberSession *session)
@ GNUNET_MESSENGER_KIND_MISS
The miss kind.
@ GNUNET_MESSENGER_KIND_NAME
The name kind.
@ GNUNET_MESSENGER_KIND_LEAVE
The leave kind.
@ GNUNET_MESSENGER_KIND_KEY
The key kind.
@ GNUNET_MESSENGER_KIND_JOIN
The join kind.
@ GNUNET_MESSENGER_KIND_DELETE
The delete kind.
@ GNUNET_MESSENGER_KIND_ID
The id kind.
struct GNUNET_MESSENGER_MemberSession * session
const struct GNUNET_MESSENGER_Message * message

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

Referenced by handle_tunnel_message(), and send_room_message().

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◆ send_room_message()

int send_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]room Room
[in/out]handle Handle
[in/out]message Message
Returns
GNUNET_YES on success, GNUNET_NO or GNUNET_SYSERR otherwise.

Definition at line 500 of file gnunet-service-messenger_room.c.

503 {
504  GNUNET_assert((room) && (handle));
505 
506  if (!message)
507  return GNUNET_NO;
508 
509  if (GNUNET_YES == is_message_session_bound(message))
511 
512  GNUNET_log(GNUNET_ERROR_TYPE_INFO, "Sending message from handle with member id: %s\n",
514 
515  struct GNUNET_HashCode hash;
516  struct GNUNET_MESSENGER_ClosureSendRoom closure;
517 
518  closure.room = room;
519  closure.handle = handle;
520  closure.exclude = NULL;
521  closure.message = message;
522  closure.hash = &hash;
523  closure.packed = GNUNET_NO;
524 
526 
527  if (GNUNET_NO == closure.packed)
529 
530  const int new_message = update_room_message (room, message, &hash);
531 
532  if (GNUNET_YES != new_message)
533  return GNUNET_SYSERR;
534 
535  switch (message->header.kind)
536  {
539  break;
542  break;
545  break;
548  break;
549  default:
550  break;
551  }
552 
554  return GNUNET_YES;
555 }
void send_message_id(struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvHandle *handle, const struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash)
Handles a sent id message to update the handles member id in the room.
void send_message_request(struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvHandle *handle, const struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash)
Handles a sent request message to trigger the request operation for this service.
void send_message_join(struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvHandle *handle, const struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash)
Handles a sent join message to ensure growth of the decentralized room structure.
void send_message_peer(struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvHandle *handle, const struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash)
Handles a sent peer message to update the rooms peer message of this service.
void merge_room_last_messages(struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvHandle *handle)
Reduces all current forks inside of the message history of a room to one remaining last message by me...
void callback_room_handle_message(struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvHandle *handle, const struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash)
int update_room_message(struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash)
static int iterate_send_room_message(void *cls, const struct GNUNET_PeerIdentity *key, void *value)
int is_message_session_bound(const struct GNUNET_MESSENGER_Message *message)
Returns if the message should be bound to a member session.
#define GNUNET_MESSENGER_PACK_MODE_UNKNOWN

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

Referenced by callback_found_message(), callback_room_disconnect(), callback_room_merge(), check_room_peer_status(), close_service_room(), join_room(), merge_room_last_messages(), open_room(), send_handle_message(), and solve_room_member_collisions().

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◆ forward_room_message()

void forward_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]room Room
[in/out]tunnel Tunnel
[in/out]message Message
[in]hashHash of message

Definition at line 558 of file gnunet-service-messenger_room.c.

562 {
563  GNUNET_assert((room) && (tunnel));
564 
565  if (!message)
566  return;
567 
568  struct GNUNET_MESSENGER_ClosureSendRoom closure;
569  struct GNUNET_HashCode message_hash;
570 
571  GNUNET_memcpy(&message_hash, hash, sizeof(struct GNUNET_HashCode));
572 
573  closure.room = room;
574  closure.handle = NULL;
575  closure.exclude = tunnel;
576  closure.message = message;
577  closure.hash = &message_hash;
578  closure.packed = GNUNET_YES;
579 
581 }

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_room_peer_status()

void check_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]room Room
[in/out]tunnel Tunnel

Definition at line 584 of file gnunet-service-messenger_room.c.

586 {
587  if (!room->peer_message)
588  return;
589 
590  struct GNUNET_MESSENGER_MessageStore *message_store = get_room_message_store(room);
591 
592  const struct GNUNET_MESSENGER_Message *message = get_store_message(message_store, room->peer_message);
593 
594  if (!message)
595  {
596  GNUNET_free(room->peer_message);
597  room->peer_message = NULL;
598  return;
599  }
600 
602  struct GNUNET_MESSENGER_Member *member = get_store_member_of(member_store, message);
603 
604  if (!member)
605  goto resend_peer_message;
606 
607  struct GNUNET_MESSENGER_MemberSession *session = get_member_session_of(member, message, room->peer_message);
608 
609  if (GNUNET_YES == is_member_session_closed(session))
610  goto resend_peer_message;
611 
612  if (tunnel)
613  forward_tunnel_message(tunnel, message, room->peer_message);
614 
615  return;
616 
617 resend_peer_message:
618  if (room->host)
619  send_room_message (room, room->host, create_message_peer (room->service));
620 }
int is_member_session_closed(const struct GNUNET_MESSENGER_MemberSession *session)
Returns if the given member session has been closed.
void forward_tunnel_message(struct GNUNET_MESSENGER_SrvTunnel *tunnel, const struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash)
Forwards a given message with a known hash through a tunnel.

References create_message_peer(), forward_tunnel_message(), get_member_session_of(), get_room_member_store(), get_room_message_store(), get_store_member_of(), get_store_message(), GNUNET_free, GNUNET_YES, GNUNET_MESSENGER_SrvRoom::host, is_member_session_closed(), GNUNET_MESSENGER_MemberSession::member, GNUNET_MESSENGER_SrvRoom::peer_message, GNUNET_MESSENGER_MemberStore::room, send_room_message(), and GNUNET_MESSENGER_SrvRoom::service.

Referenced by recv_message_info(), and send_message_join().

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◆ merge_room_last_messages()

void merge_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]room Room
[in/out]handle Handle

Definition at line 623 of file gnunet-service-messenger_room.c.

625 {
626  GNUNET_assert(room);
627 
628  if (!handle)
629  return;
630 
631  const struct GNUNET_HashCode *hash;
632 
633 merge_next:
634  hash = get_message_state_merge_hash (&(room->state));
635 
636  if (!hash)
637  return;
638 
640  goto merge_next;
641 }
struct GNUNET_MESSENGER_Message * create_message_merge(const struct GNUNET_HashCode *previous)
Creates and allocates a new merge message containing the hash of a second previous message besides th...

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

Referenced by send_room_message().

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◆ callback_room_deletion()

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

Definition at line 644 of file gnunet-service-messenger_room.c.

646 {
648  {
649  GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "Deletion of message failed! (%s)\n", GNUNET_h2s(hash));
650  return;
651  }
652 }
int delete_store_message(struct GNUNET_MESSENGER_MessageStore *store, const struct GNUNET_HashCode *hash)
Deletes a message in the message store.

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

Referenced by callback_store_operation().

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◆ callback_room_merge()

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

Definition at line 655 of file gnunet-service-messenger_room.c.

657 {
658  if (!room->host)
659  return;
660 
661  send_room_message (room, room->host, create_message_merge (hash));
662 }

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

Referenced by callback_store_operation().

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◆ delete_room_message()

int delete_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]room Room
[in/out]session Member 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 665 of file gnunet-service-messenger_room.c.

669 {
670  GNUNET_assert((room) && (session) && (hash));
671 
673 
674  if (0 == GNUNET_memcmp(&forever, &delay))
675  {
676  GNUNET_log(GNUNET_ERROR_TYPE_INFO, "Deletion is delayed forever: operation is impossible!\n");
677  return GNUNET_SYSERR;
678  }
679 
680  struct GNUNET_MESSENGER_MessageStore *message_store = get_room_message_store(room);
681 
682  const struct GNUNET_MESSENGER_Message *message = get_store_message(message_store, hash);
683 
684  if (!message)
685  return GNUNET_YES;
686 
687  if (GNUNET_YES != check_member_session_history(session, hash, GNUNET_YES))
688  {
689  GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "Unpermitted request for deletion by member (%s) of message (%s)!\n",
690  GNUNET_sh2s(get_member_session_id(session)), GNUNET_h2s(hash));
691 
692  return GNUNET_NO;
693  }
694 
696 
697  if (GNUNET_OK != use_store_operation(operation_store, hash, GNUNET_MESSENGER_OP_DELETE, delay))
698  {
699  GNUNET_log(GNUNET_ERROR_TYPE_ERROR, "Deletion has failed: operation denied!\n");
700  return GNUNET_SYSERR;
701  }
702 
703  return GNUNET_YES;
704 }
static struct GNUNET_TIME_Relative delay
When should dkg communication start?
const struct GNUNET_ShortHashCode * get_member_session_id(const struct GNUNET_MESSENGER_MemberSession *session)
Returns the member id of a given member session.
struct GNUNET_TIME_Relative GNUNET_TIME_relative_get_forever_(void)
Return "forever".
Definition: time.c:163
Time for relative time used by GNUnet, in microseconds.

References check_member_session_history(), delay, get_member_session_id(), get_room_message_store(), get_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_room_cadet()

struct GNUNET_CADET_Handle* get_room_cadet ( struct GNUNET_MESSENGER_SrvRoom room)

Returns the CADET handle from a rooms service.

Parameters
[in/out]room Room
Returns
CADET handle

Definition at line 707 of file gnunet-service-messenger_room.c.

708 {
709  GNUNET_assert(room);
710 
711  return room->service->cadet;
712 }
struct GNUNET_CADET_Handle * cadet

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

Referenced by connect_tunnel(), and open_room().

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◆ get_room_key()

const struct GNUNET_HashCode* get_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 715 of file gnunet-service-messenger_room.c.

716 {
717  GNUNET_assert(room);
718 
719  return &(room->key);
720 }

References GNUNET_assert, and GNUNET_MESSENGER_SrvRoom::key.

Referenced by callback_found_message(), callback_room_connect(), connect_tunnel(), get_member_store_key(), get_room_data_subdir(), handle_message_join(), handle_message_leave(), handle_service_message(), join_room(), join_room_locally(), notify_about_members(), open_room(), pack_room_message(), send_message_id(), send_room_message(), solve_room_member_collisions(), and update_room_message().

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◆ get_room_tunnel()

const struct GNUNET_MESSENGER_SrvTunnel* get_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 723 of file gnunet-service-messenger_room.c.

725 {
726  GNUNET_assert((room) && (peer));
727 
729 }

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

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◆ request_room_message_step()

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

Definition at line 732 of file gnunet-service-messenger_room.c.

737 {
738  struct GNUNET_MESSENGER_MessageStore *message_store = get_room_message_store(room);
739 
741  message_store, hash, GNUNET_YES
742  );
743 
744  if (!link)
745  goto forward;
746 
747  int result = request_room_message_step(room, &(link->first), session, callback, cls);
748 
749  if ((GNUNET_YES == link->multiple) &&
750  (GNUNET_YES == request_room_message_step(room, &(link->second), session, callback, cls)))
751  return GNUNET_YES;
752  else
753  return result;
754 
755 forward:
756  if (GNUNET_YES != check_member_session_history(session, hash, GNUNET_NO))
757  return GNUNET_YES;
758 
759  const struct GNUNET_MESSENGER_Message *message = get_store_message(message_store, hash);
760 
761  if (!message)
762  return GNUNET_NO;
763 
764  if (callback)
765  callback (cls, room, message, hash);
766 
767  return GNUNET_YES;
768 }
static int forward
Search direction: forward.
Definition: gnunet-abd.c:162
static int result
Global testing status.
const struct GNUNET_MESSENGER_MessageLink * get_store_message_link(struct GNUNET_MESSENGER_MessageStore *store, const struct GNUNET_HashCode *hash, int deleted_only)
Returns the message link from a message store matching a given hash.
static int request_room_message_step(struct GNUNET_MESSENGER_SrvRoom *room, const struct GNUNET_HashCode *hash, const struct GNUNET_MESSENGER_MemberSession *session, GNUNET_MESSENGER_MessageRequestCallback callback, void *cls)

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

Referenced by request_room_message().

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◆ request_room_message()

int request_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]room Room
[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 771 of file gnunet-service-messenger_room.c.

776 {
777  GNUNET_assert((room) && (hash));
778 
779  int result = request_room_message_step (room, hash, session, callback, cls);
780 
781  if ((GNUNET_NO == result) && (callback))
782  callback (cls, room, NULL, hash);
783 
784  return result;
785 }

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

Referenced by handle_get_message(), and recv_message_request().

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◆ callback_room_disconnect()

void callback_room_disconnect ( struct GNUNET_MESSENGER_SrvRoom room,
void *  cls 
)

Definition at line 788 of file gnunet-service-messenger_room.c.

790 {
791  struct GNUNET_MESSENGER_SrvTunnel *tunnel = cls;
792 
793  if (!room->host)
794  return;
795 
798 
801  return;
802 
805 }
static struct GNUNET_IDENTITY_Handle * identity
Which namespace do we publish to? NULL if we do not publish to a namespace.
struct GNUNET_MESSENGER_Message * create_message_miss(const struct GNUNET_PeerIdentity *peer)
Creates and allocates a new miss message containing the missing peer identity.
void get_tunnel_peer_identity(const struct GNUNET_MESSENGER_SrvTunnel *tunnel, struct GNUNET_PeerIdentity *peer)
Writes the peer identity of the peer connected via tunnel to this peer into the peer parameter.
int GNUNET_CONTAINER_multipeermap_contains(const struct GNUNET_CONTAINER_MultiPeerMap *map, const struct GNUNET_PeerIdentity *key)
Check if the map contains any value under the given key (including values that are NULL).
int contains_list_tunnels(struct GNUNET_MESSENGER_ListTunnels *tunnels, const struct GNUNET_PeerIdentity *peer)
Tests linearly if the list of tunnels peer identities contains a specific peer identity and returns G...

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

Referenced by callback_tunnel_disconnect().

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◆ callback_verify_room_message()

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

Definition at line 808 of file gnunet-service-messenger_room.c.

812 {
813  if (GNUNET_MESSENGER_KIND_UNKNOWN == message->header.kind)
814  {
815  GNUNET_log(GNUNET_ERROR_TYPE_ERROR, "Message error: Kind is unknown! (%d)\n", message->header.kind);
816  return GNUNET_SYSERR;
817  }
818 
819  struct GNUNET_MESSENGER_MessageStore *message_store = get_room_message_store(room);
820 
821  const struct GNUNET_MESSENGER_Message *previous = get_store_message(message_store, &(message->header.previous));
822 
823  if (!previous)
824  goto skip_time_comparison;
825 
826  struct GNUNET_TIME_Absolute timestamp = GNUNET_TIME_absolute_ntoh(message->header.timestamp);
828 
829  if (GNUNET_TIME_relative_get_zero_().rel_value_us != GNUNET_TIME_absolute_get_difference(timestamp, last).rel_value_us)
830  {
831  GNUNET_log(GNUNET_ERROR_TYPE_ERROR, "Message error: Timestamp does not check out!\n");
832  return GNUNET_SYSERR;
833  }
834 
835 skip_time_comparison:
836  GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Receiving message of kind: %s!\n",
838 
839  return GNUNET_OK;
840 }
struct GNUNET_TIME_Relative GNUNET_TIME_relative_get_zero_(void)
Return relative time of 0ms.
Definition: time.c:100
struct GNUNET_TIME_Absolute GNUNET_TIME_absolute_ntoh(struct GNUNET_TIME_AbsoluteNBO a)
Convert absolute time from network byte order.
Definition: time.c:542
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:248
Time for absolute times used by GNUnet, in microseconds.

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

Referenced by check_tunnel_message().

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◆ solve_room_member_collisions()

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

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

Parameters
[in/out]room Room
[in]public_keyPublic key of EGO
[in]member_idMember ID
[in]timestampTimestamp

Definition at line 870 of file gnunet-service-messenger_room.c.

874 {
875  GNUNET_assert ((room) && (public_key) && (member_id));
876 
878  struct GNUNET_MESSENGER_Member *member = get_store_member(member_store, member_id);
879 
880  if ((!member) || (1 >= GNUNET_CONTAINER_multihashmap_size(member->sessions)))
881  return;
882 
883  struct GNUNET_MESSENGER_ListHandles *handles = &(room->service->handles);
884  struct GNUNET_MESSENGER_ListHandle* element;
885 
886  for (element = handles->head; element; element = element->next)
887  {
888  if (0 != GNUNET_memcmp(member_id, get_handle_member_id(element->handle, get_room_key(room))))
889  continue;
890 
891  if (0 == GNUNET_memcmp(public_key, &(get_handle_ego(element->handle)->pub)))
892  continue;
893 
895 
896  if (!session)
897  continue;
898 
900 
901  if (GNUNET_TIME_relative_get_zero_().rel_value_us != GNUNET_TIME_absolute_get_difference(start, timestamp).rel_value_us)
902  continue;
903 
904  struct GNUNET_ShortHashCode random_id;
905  generate_free_member_id (&random_id, member_store->members);
906 
907  send_room_message(room, element->handle, create_message_id(&random_id));
908  }
909 }
static int start
Set if we are to start default services (including ARM).
Definition: gnunet-arm.c:39
struct GNUNET_TIME_Absolute get_member_session_start(const struct GNUNET_MESSENGER_MemberSession *session)
Returns the timestamp of the member session's start.
struct GNUNET_MESSENGER_Message * create_message_id(const struct GNUNET_ShortHashCode *unique_id)
Creates and allocates a new id message containing the unique member id to change to.
unsigned int GNUNET_CONTAINER_multihashmap_size(const struct GNUNET_CONTAINER_MultiHashMap *map)
Get the number of key-value pairs in the map.
int generate_free_member_id(struct GNUNET_ShortHashCode *id, const struct GNUNET_CONTAINER_MultiShortmap *members)
Tries to generate an unused member id and store it into the id parameter.
struct GNUNET_MESSENGER_ListHandle * next
struct GNUNET_MESSENGER_SrvHandle * handle
struct GNUNET_MESSENGER_ListHandle * head
struct GNUNET_CONTAINER_MultiShortmap * members
struct GNUNET_CONTAINER_MultiHashMap * sessions
struct GNUNET_MESSENGER_ListHandles handles

References create_message_id(), generate_free_member_id(), get_handle_ego(), get_handle_member_id(), get_member_session(), get_member_session_start(), get_room_key(), get_room_member_store(), get_store_member(), GNUNET_assert, GNUNET_CONTAINER_multihashmap_size(), GNUNET_memcmp, GNUNET_TIME_absolute_get_difference(), GNUNET_TIME_relative_get_zero_(), GNUNET_MESSENGER_ListHandle::handle, GNUNET_MESSENGER_Service::handles, GNUNET_MESSENGER_ListHandles::head, GNUNET_MESSENGER_MemberSession::member, GNUNET_MESSENGER_MemberStore::members, GNUNET_MESSENGER_ListHandle::next, GNUNET_MESSENGER_Ego::pub, GNUNET_MESSENGER_MemberStore::room, send_room_message(), GNUNET_MESSENGER_SrvRoom::service, GNUNET_MESSENGER_Member::sessions, and start.

Referenced by handle_message_id(), and handle_message_join().

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◆ rebuild_room_basement_structure()

void rebuild_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]room Room

Definition at line 912 of file gnunet-service-messenger_room.c.

913 {
914  GNUNET_assert(room);
915 
916  struct GNUNET_PeerIdentity peer;
917  size_t src;
918 
919  if ((GNUNET_OK != get_service_peer_identity (room->service, &peer)) ||
920  (!find_list_tunnels (&(room->basement), &peer, &src)))
921  return;
922 
923  size_t count = count_of_tunnels (&(room->basement));
924 
925  struct GNUNET_MESSENGER_ListTunnel *element = room->basement.head;
926  struct GNUNET_MESSENGER_SrvTunnel *tunnel;
927 
928  size_t dst = 0;
929 
930  while (element)
931  {
932  GNUNET_PEER_resolve (element->peer, &peer);
933 
935 
936  if (!tunnel)
937  {
938  element = remove_from_list_tunnels (&(room->basement), element);
939  continue;
940  }
941 
942  if (GNUNET_YES == required_connection_between (count, src, dst))
943  {
944  if (GNUNET_SYSERR == connect_tunnel (tunnel))
945  {
946  element = remove_from_list_tunnels (&(room->basement), element);
947  continue;
948  }
949  }
950  else
951  disconnect_tunnel (tunnel);
952 
953  element = element->next;
954  dst++;
955  }
956 }
int required_connection_between(size_t count, size_t src, size_t dst)
Returns GNUNET_YES or GNUNET_NO to determine if the peers of index src and index dst should be connec...
size_t count_of_tunnels(const struct GNUNET_MESSENGER_ListTunnels *tunnels)
Returns the count of peers in a list (typically from the basement of a room).
void GNUNET_PEER_resolve(GNUNET_PEER_Id id, struct GNUNET_PeerIdentity *pid)
Convert an interned PID to a normal peer identity.
Definition: peer.c:225
struct GNUNET_MESSENGER_ListTunnel * remove_from_list_tunnels(struct GNUNET_MESSENGER_ListTunnels *tunnels, struct GNUNET_MESSENGER_ListTunnel *element)
Removes a specific element from the list of tunnels peer identities and returns the next element in t...
struct GNUNET_MESSENGER_ListTunnel * find_list_tunnels(struct GNUNET_MESSENGER_ListTunnels *tunnels, const struct GNUNET_PeerIdentity *peer, size_t *index)
Searches linearly through the list of tunnels peer identities for matching a specific peer identity a...
struct GNUNET_MESSENGER_ListTunnel * next
struct GNUNET_MESSENGER_ListTunnel * head

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

Referenced by handle_message_miss(), and handle_message_peer().

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◆ iterate_update_member_sessions()

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

Definition at line 1055 of file gnunet-service-messenger_room.c.

1058 {
1059  struct GNUNET_MESSENGER_MemberUpdate *update = cls;
1060 
1061  update_member_session_history(session, update->message, update->hash);
1062 
1063  if (GNUNET_YES == is_member_session_completed(session))
1064  {
1067  );
1068 
1069  element->session = session;
1070 
1071  GNUNET_CONTAINER_DLL_insert_tail(update->head, update->tail, element);
1072  }
1073 
1074  return GNUNET_YES;
1075 }
void update_member_session_history(struct GNUNET_MESSENGER_MemberSession *session, const struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash)
Adds a given message to the history of a session using the messages hash.
#define GNUNET_CONTAINER_DLL_insert_tail(head, tail, element)
Insert an element at the tail of a DLL.
struct GNUNET_MESSENGER_MemberSessionCompletion * head
struct GNUNET_MESSENGER_MemberSessionCompletion * tail

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

Referenced by callback_room_handle_message().

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◆ remove_room_member_session()

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

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

1232 {
1233  GNUNET_assert ((room) && (session));
1234 
1235  remove_member_session (session->member, session);
1236 
1237  const struct GNUNET_IDENTITY_PublicKey *public_key = get_member_session_public_key(session);
1238 
1239  struct GNUNET_HashCode hash;
1240  GNUNET_CRYPTO_hash(public_key, sizeof(*public_key), &hash);
1241 
1242  char *room_dir;
1243  get_room_data_subdir (room, &room_dir);
1244 
1245  char* session_dir;
1246  GNUNET_asprintf (
1247  &session_dir, "%s%s%c%s%c%s%c%s%c", room_dir,
1248  "members", DIR_SEPARATOR,
1250  "sessions", DIR_SEPARATOR,
1251  GNUNET_h2s(&hash), DIR_SEPARATOR
1252  );
1253 
1254  GNUNET_free (room_dir);
1255 
1256  GNUNET_DISK_directory_remove(session_dir);
1257  GNUNET_free (session_dir);
1258 
1259  destroy_member_session(session);
1260 }
void remove_member_session(struct GNUNET_MESSENGER_Member *member, struct GNUNET_MESSENGER_MemberSession *session)
Removes a given member session from its member.
void destroy_member_session(struct GNUNET_MESSENGER_MemberSession *session)
Destroys a member session and frees its memory fully.
const struct GNUNET_IDENTITY_PublicKey * get_member_session_public_key(const struct GNUNET_MESSENGER_MemberSession *session)
Returns the public key from an EGO of a given member session.
static void get_room_data_subdir(struct GNUNET_MESSENGER_SrvRoom *room, char **dir)
enum GNUNET_GenericReturnValue GNUNET_DISK_directory_remove(const char *filename)
Remove all files in a directory (rm -rf).
Definition: disk.c:1085
void GNUNET_CRYPTO_hash(const void *block, size_t size, struct GNUNET_HashCode *ret)
Compute hash of a given block.
Definition: crypto_hash.c:41
int int GNUNET_asprintf(char **buf, const char *format,...) __attribute__((format(printf
Like asprintf, just portable.
#define DIR_SEPARATOR
Definition: platform.h:164
An identity key as per LSD0001.

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

Referenced by callback_room_handle_message().

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◆ get_room_data_subdir()

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

Definition at line 1164 of file gnunet-service-messenger_room.c.

1166 {
1167  GNUNET_assert((room) && (dir));
1168 
1169  GNUNET_asprintf (dir, "%s%s%c%s%c", room->service->dir, "rooms", DIR_SEPARATOR, GNUNET_h2s (get_room_key(room)), DIR_SEPARATOR);
1170 }
static char * dir
Set to the directory where runtime files are stored.
Definition: gnunet-arm.c:89

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

Referenced by load_room(), remove_room_member_session(), and save_room().

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◆ load_room()

void load_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 1173 of file gnunet-service-messenger_room.c.

1174 {
1175  GNUNET_assert(room);
1176 
1177  char *room_dir;
1178  get_room_data_subdir (room, &room_dir);
1179 
1181  {
1182  load_member_store (get_room_member_store(room), room_dir);
1183  load_message_store (get_room_message_store(room), room_dir);
1185 
1186  char *basement_file;
1187  GNUNET_asprintf (&basement_file, "%s%s", room_dir, "basement.list");
1188 
1189  load_list_tunnels(&(room->basement), basement_file);
1190  GNUNET_free(basement_file);
1191 
1192  char *last_messages_file;
1193  GNUNET_asprintf (&last_messages_file, "%s%s", room_dir, "last_messages.list");
1194 
1195  load_message_state(&(room->state), room_dir);
1196  GNUNET_free (last_messages_file);
1197  }
1198 
1199  GNUNET_free(room_dir);
1200 }
void load_member_store(struct GNUNET_MESSENGER_MemberStore *store, const char *directory)
Loads members from a directory into a member store.
void load_message_state(struct GNUNET_MESSENGER_MessageState *state, const char *path)
void load_message_store(struct GNUNET_MESSENGER_MessageStore *store, const char *directory)
Loads messages from a directory into a message store.
void load_operation_store(struct GNUNET_MESSENGER_OperationStore *store, const char *directory)
Loads operations from a directory into an operation store.
enum GNUNET_GenericReturnValue GNUNET_DISK_directory_test(const char *fil, int is_readable)
Test if fil is a directory and listable.
Definition: disk.c: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_room_member_store(), get_room_message_store(), get_room_operation_store(), GNUNET_asprintf(), GNUNET_assert, GNUNET_DISK_directory_test(), GNUNET_free, GNUNET_YES, load_list_tunnels(), load_member_store(), load_message_state(), load_message_store(), load_operation_store(), and GNUNET_MESSENGER_SrvRoom::state.

Referenced by create_room().

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◆ save_room()

void save_room ( struct GNUNET_MESSENGER_SrvRoom room)

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

Parameters
[in]roomRoom

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

1204 {
1205  GNUNET_assert(room);
1206 
1207  char *room_dir;
1208  get_room_data_subdir (room, &room_dir);
1209 
1210  if ((GNUNET_YES == GNUNET_DISK_directory_test (room_dir, GNUNET_NO)) ||
1211  (GNUNET_OK == GNUNET_DISK_directory_create (room_dir)))
1212  {
1213  save_member_store(get_room_member_store(room), room_dir);
1214  save_message_store (get_room_message_store(room), room_dir);
1216 
1217  char *basement_file;
1218  GNUNET_asprintf (&basement_file, "%s%s", room_dir, "basement.list");
1219 
1220  save_list_tunnels(&(room->basement), basement_file);
1221  GNUNET_free(basement_file);
1222 
1223  save_message_state(&(room->state), room_dir);
1224  }
1225 
1226  GNUNET_free(room_dir);
1227 }
void save_member_store(struct GNUNET_MESSENGER_MemberStore *store, const char *directory)
Saves members from a member store into a directory.
void save_message_state(const struct GNUNET_MESSENGER_MessageState *state, const char *path)
void save_message_store(struct GNUNET_MESSENGER_MessageStore *store, const char *directory)
Saves messages from a message store into a directory.
void save_operation_store(const struct GNUNET_MESSENGER_OperationStore *store, const char *directory)
Saves operations from an operation store into a directory.
enum GNUNET_GenericReturnValue GNUNET_DISK_directory_create(const char *dir)
Implementation of "mkdir -p".
Definition: disk.c:496
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_room_member_store(), get_room_message_store(), get_room_operation_store(), GNUNET_asprintf(), GNUNET_assert, GNUNET_DISK_directory_create(), GNUNET_DISK_directory_test(), GNUNET_free, GNUNET_NO, GNUNET_OK, GNUNET_YES, save_list_tunnels(), save_member_store(), save_message_state(), save_message_store(), save_operation_store(), and GNUNET_MESSENGER_SrvRoom::state.

Referenced by destroy_room().

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