gnunet-service-messenger_message_send.c File Reference

#include "gnunet-service-messenger_message_send.h"
#include "gnunet-service-messenger_handle.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_operation.h"
#include "gnunet-service-messenger_room.h"
#include "gnunet_common.h"

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

Go to the source code of this file.

Data Structures
struct	GNUNET_MESSENGER_MemberNotify

Functions
static void	notify_about_members (struct GNUNET_MESSENGER_MemberNotify *notify, struct GNUNET_MESSENGER_MemberSession *session, struct GNUNET_CONTAINER_MultiHashMap *map, enum GNUNET_GenericReturnValue check_permission)
static enum GNUNET_GenericReturnValue	iterate_notify_about_members (void *cls, const struct GNUNET_CRYPTO_PublicKey *public_key, struct GNUNET_MESSENGER_MemberSession *session)
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. More...
void	send_message_key (struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvHandle *handle, const struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash)
	Handles a sent key message to ensure changes to the public key of the sending handle. More...
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. More...
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. More...
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. More...

Function Documentation

notify_about_members()

static void notify_about_members ( struct GNUNET_MESSENGER_MemberNotify *  notify, struct GNUNET_MESSENGER_MemberSession *  session, struct GNUNET_CONTAINER_MultiHashMap *  map, enum GNUNET_GenericReturnValue  check_permission  )

static

Definition at line 44 of file gnunet-service-messenger_message_send.c.

{
  struct GNUNET_MESSENGER_MessageStore *message_store;
  struct GNUNET_MESSENGER_ListMessage *element;
 
  GNUNET_assert ((notify) && (session) && (map));
 
  if (session->prev)
    notify_about_members (notify, session->prev, map, GNUNET_YES);
 
  message_store = get_srv_room_message_store (notify->room);
 
  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
              "Notify through all of member session: %s\n",
              GNUNET_sh2s (get_member_session_id (session)));
 
  for (element = session->messages.head; element; element = element->next)
  {
    const struct GNUNET_MESSENGER_Message *message;
 
    if (GNUNET_YES == GNUNET_CONTAINER_multihashmap_contains (map,
                                                              &(element->hash)))
      continue;
 
    if ((GNUNET_YES == check_permission) &&
        (GNUNET_YES != check_member_session_history (notify->session,
                                                     &(element->hash),
                                                     GNUNET_NO)))
    {
      GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
                  "Permission for notification of session message denied!\n");
      continue;
    }
 
    if (GNUNET_OK != GNUNET_CONTAINER_multihashmap_put (map, &(element->hash),
                                                        NULL,
                                                        GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST))
 
 
      GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
                  "Notification of session message could be duplicated!\n");
 
    message = get_store_message (message_store, &(element->hash));
 
    if ((! message) || (GNUNET_YES == is_peer_message (message)))
    {
      GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
                  "Session message for notification is invalid!\n");
      continue;
    }
 
    {
      struct GNUNET_MESSENGER_SenderSession sender;
      sender.member = session;
 
      notify_srv_handle_message (notify->handle, notify->room, &sender, message,
                                 &(element->hash), GNUNET_NO);
    }
  }
}

References check_member_session_history(), get_member_session_id(), get_srv_room_message_store(), get_store_message(), GNUNET_assert, GNUNET_CONTAINER_multihashmap_contains(), GNUNET_CONTAINER_multihashmap_put(), GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST, GNUNET_ERROR_TYPE_DEBUG, GNUNET_ERROR_TYPE_WARNING, GNUNET_log, GNUNET_NO, GNUNET_OK, GNUNET_sh2s(), GNUNET_YES, GNUNET_MESSENGER_MemberNotify::handle, GNUNET_MESSENGER_ListMessage::hash, GNUNET_MESSENGER_ListMessages::head, is_peer_message(), map, GNUNET_MESSENGER_SenderSession::member, GNUNET_MESSENGER_MemberSession::messages, GNUNET_MESSENGER_ListMessage::next, notify_about_members(), notify_srv_handle_message(), GNUNET_MESSENGER_MemberSession::prev, GNUNET_MESSENGER_MemberNotify::room, and GNUNET_MESSENGER_MemberNotify::session.

Referenced by iterate_notify_about_members(), and notify_about_members().

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iterate_notify_about_members()

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

static

Definition at line 110 of file gnunet-service-messenger_message_send.c.

{
  struct GNUNET_MESSENGER_MemberNotify *notify;
 
  GNUNET_assert ((cls) && (session));
 
  notify = cls;
 
  if ((notify->session == session) || (GNUNET_YES ==
                                       is_member_session_completed (session)))
    return GNUNET_YES;
 
  GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Notify about member session: %s\n",
              GNUNET_sh2s (get_member_session_id (session)));
 
  {
    struct GNUNET_CONTAINER_MultiHashMap *map;
    map = GNUNET_CONTAINER_multihashmap_create (4, GNUNET_NO);
 
    if (map)
      notify_about_members (notify, session, map, GNUNET_NO);
 
    GNUNET_CONTAINER_multihashmap_destroy (map);
  }
 
  return GNUNET_YES;
}

References get_member_session_id(), GNUNET_assert, GNUNET_CONTAINER_multihashmap_create(), GNUNET_CONTAINER_multihashmap_destroy(), GNUNET_ERROR_TYPE_DEBUG, GNUNET_log, GNUNET_NO, GNUNET_sh2s(), GNUNET_YES, is_member_session_completed(), map, notify_about_members(), and GNUNET_MESSENGER_MemberNotify::session.

Referenced by send_message_join().

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send_message_join()

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.

(if the service provides a peer message for this room currently, it will be forwarded)

Parameters

[in,out]	room	Room of the message
[in,out]	handle	Sending handle
[in]	message	JOIN-Message
[in]	hash	Hash of the message

Definition at line 143 of file gnunet-service-messenger_message_send.c.

{
  struct GNUNET_MESSENGER_MemberStore *member_store;
  struct GNUNET_MESSENGER_Member *member;
  struct GNUNET_MESSENGER_MemberSession *session;
 
  set_srv_handle_key (handle, &(message->body.join.key));
 
  member_store = get_srv_room_member_store (room);
  member = add_store_member (member_store,
                             &(message->header.sender_id));
 
  if (! member)
  {
    GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
                "A member could not join with ID: %s\n",
                GNUNET_sh2s (&(message->header.sender_id)));
    goto skip_member_notification;
  }
 
  session = get_member_session_of (member, message, hash);
 
  if (! session)
  {
    GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
                "A valid session is required to join a room!\n");
    goto skip_member_notification;
  }
 
  {
    struct GNUNET_MESSENGER_MemberNotify notify;
 
    notify.room = room;
    notify.handle = handle;
    notify.session = session;
 
    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
                "Notify about all member sessions except: %s\n",
                GNUNET_sh2s (get_member_session_id (session)));
 
    iterate_store_members (get_srv_room_member_store (room),
                           iterate_notify_about_members, &notify);
  }
 
skip_member_notification:
  check_srv_room_peer_status (room, NULL);
}

References add_store_member(), GNUNET_MESSENGER_Message::body, check_srv_room_peer_status(), get_member_session_id(), get_member_session_of(), get_srv_room_member_store(), GNUNET_ERROR_TYPE_DEBUG, GNUNET_ERROR_TYPE_WARNING, GNUNET_log, GNUNET_sh2s(), handle, GNUNET_MESSENGER_MemberNotify::handle, GNUNET_MESSENGER_Message::header, iterate_notify_about_members(), iterate_store_members(), GNUNET_MESSENGER_MessageBody::join, GNUNET_MESSENGER_MessageJoin::key, GNUNET_MESSENGER_MemberSession::member, GNUNET_MESSENGER_MemberNotify::room, GNUNET_MESSENGER_MessageHeader::sender_id, GNUNET_MESSENGER_MemberNotify::session, and set_srv_handle_key().

Referenced by send_srv_room_message().

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send_message_key()

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

Handles a sent key message to ensure changes to the public key of the sending handle.

Parameters

[in,out]	room	Room of the message
[in,out]	handle	Sending handle
[in]	message	KEY-Message
[in]	hash	Hash of the message

Definition at line 196 of file gnunet-service-messenger_message_send.c.

{
  set_srv_handle_key (handle, &(message->body.key.key));
}

References GNUNET_MESSENGER_Message::body, handle, GNUNET_MESSENGER_MessageKey::key, GNUNET_MESSENGER_MessageBody::key, and set_srv_handle_key().

Referenced by send_srv_room_message().

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send_message_peer()

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.

(a set peer message indicates this service being a part of the decentralized room structure)

Parameters

[in,out]	room	Room of the message
[in,out]	handle	Sending handle
[in]	message	PEER-Message
[in]	hash	Hash of the message

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

{
  if (! room->peer_message)
    room->peer_message = GNUNET_new (struct GNUNET_HashCode);
 
  GNUNET_memcpy (room->peer_message, hash, sizeof(struct GNUNET_HashCode));
 
  send_srv_room_message (room, room->host, create_message_connection (room));
}

References create_message_connection(), GNUNET_memcpy, GNUNET_new, GNUNET_MESSENGER_SrvRoom::host, GNUNET_MESSENGER_SrvRoom::peer_message, GNUNET_MESSENGER_MemberNotify::room, and send_srv_room_message().

Referenced by send_srv_room_message().

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send_message_id()

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.

(changing member id is useful to prevent collisions)

Parameters

[in,out]	room	Room of the message
[in,out]	handle	Sending handle
[in]	message	ID-Message
[in]	hash	Hash of the message

Definition at line 221 of file gnunet-service-messenger_message_send.c.

{
  change_srv_handle_member_id (handle, get_srv_room_key (room),
                               &(message->body.id.id));
}

References GNUNET_MESSENGER_Message::body, change_srv_handle_member_id(), get_srv_room_key(), handle, GNUNET_MESSENGER_MessageId::id, GNUNET_MESSENGER_MessageBody::id, and GNUNET_MESSENGER_MemberNotify::room.

Referenced by send_srv_room_message().

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send_message_request()

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.

(the request operation will deactivate the possibility of spamming requests)

Parameters

[in,out]	room	Room of the message
[in,out]	handle	Sending handle
[in]	message	REQUEST-Message
[in]	hash	Hash of the message

Definition at line 232 of file gnunet-service-messenger_message_send.c.

{
  struct GNUNET_MESSENGER_OperationStore *operation_store;
 
  operation_store = get_srv_room_operation_store (room);
 
  use_store_operation (
    operation_store,
    &(message->body.request.hash),
    GNUNET_MESSENGER_OP_REQUEST,
    GNUNET_MESSENGER_REQUEST_DELAY
    );
}

References GNUNET_MESSENGER_Message::body, get_srv_room_operation_store(), GNUNET_MESSENGER_OP_REQUEST, GNUNET_MESSENGER_REQUEST_DELAY, GNUNET_MESSENGER_MessageRequest::hash, GNUNET_MESSENGER_MessageBody::request, GNUNET_MESSENGER_OperationStore::room, and use_store_operation().

Referenced by send_srv_room_message().

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