messenger_api_room.c File Reference

messenger api: client implementation of GNUnet MESSENGER service More...

#include "messenger_api_room.h"
#include "messenger_api_handle.h"

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Functions
struct GNUNET_MESSENGER_Room *	create_room (struct GNUNET_MESSENGER_Handle *handle, const struct GNUNET_HashCode *key)
	Creates and allocates a new room for a handle with a given key for the client API. More...
static int	iterate_destroy_message (void *cls, const struct GNUNET_HashCode *key, void *value)
void	destroy_room (struct GNUNET_MESSENGER_Room *room)
	Destroys a room and frees its memory fully from the client API. More...
const struct GNUNET_MESSENGER_Message *	get_room_message (const struct GNUNET_MESSENGER_Room *room, const struct GNUNET_HashCode *hash)
	Returns a message locally stored from a map for a given hash in a room. More...
static void	handle_join_message (struct GNUNET_MESSENGER_Room *room, const struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash)
static void	handle_leave_message (struct GNUNET_MESSENGER_Room *room, const struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash)
static void	handle_name_message (struct GNUNET_MESSENGER_Room *room, const struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash)
static void	handle_key_message (struct GNUNET_MESSENGER_Room *room, const struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash)
static void	handle_id_message (struct GNUNET_MESSENGER_Room *room, const struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash)
static void	handle_miss_message (struct GNUNET_MESSENGER_Room *room, const struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash)
void	handle_room_message (struct GNUNET_MESSENGER_Room *room, const struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash)
	Handles a message with a given hash in a room for the client API to update members and its information. More...

Detailed Description

messenger api: client implementation of GNUnet MESSENGER service

Author

Tobias Frisch

Definition in file messenger_api_room.c.

Function Documentation

create_room()

struct GNUNET_MESSENGER_Room* create_room	(	struct GNUNET_MESSENGER_Handle *	handle,
		const struct GNUNET_HashCode *	key
	)

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

Parameters

handle	Handle
key	Key of room

Returns

New room

Definition at line 31 of file messenger_api_room.c.

References GNUNET_MESSENGER_Room::contact_id, GNUNET_MESSENGER_Room::entries, GNUNET_CONTAINER_multihashmap_create(), GNUNET_CONTAINER_multishortmap_create(), GNUNET_memcpy, GNUNET_new, GNUNET_NO, handle, GNUNET_MESSENGER_Room::handle, init_list_tunnels(), GNUNET_MESSENGER_Room::key, GNUNET_MESSENGER_Room::members, GNUNET_MESSENGER_Room::messages, and GNUNET_MESSENGER_Room::opened.

{
  struct GNUNET_MESSENGER_Room *room = GNUNET_new(struct GNUNET_MESSENGER_Room);

  room->handle = handle;
  GNUNET_memcpy(&(room->key), key, sizeof(*key));

  room->opened = GNUNET_NO;
  room->contact_id = NULL;

  room->members = GNUNET_CONTAINER_multishortmap_create (8, GNUNET_NO);

  init_list_tunnels (&(room->entries));

  room->messages = GNUNET_CONTAINER_multihashmap_create (8, GNUNET_NO);

  return room;
}

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iterate_destroy_message()

static int iterate_destroy_message ( void *  cls, const struct GNUNET_HashCode *  key, void *  value  )

static

Definition at line 51 of file messenger_api_room.c.

References destroy_message(), GNUNET_YES, and value.

Referenced by destroy_room().

{
  struct GNUNET_MESSENGER_Message *message = value;

  destroy_message (message);

  return GNUNET_YES;
}

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destroy_room()

void destroy_room

(

struct GNUNET_MESSENGER_Room *

room

)

Destroys a room and frees its memory fully from the client API.

Parameters

room

Room

Definition at line 61 of file messenger_api_room.c.

References clear_list_tunnels(), GNUNET_MESSENGER_Room::contact_id, GNUNET_MESSENGER_Room::entries, GNUNET_CONTAINER_multihashmap_destroy(), GNUNET_CONTAINER_multihashmap_iterate(), GNUNET_CONTAINER_multishortmap_destroy(), GNUNET_free, iterate_destroy_message(), GNUNET_MESSENGER_Room::members, and GNUNET_MESSENGER_Room::messages.

{
  if (room->members)
    GNUNET_CONTAINER_multishortmap_destroy (room->members);

  clear_list_tunnels (&(room->entries));

  if (room->messages)
  {
    GNUNET_CONTAINER_multihashmap_iterate (room->messages, iterate_destroy_message, NULL);

    GNUNET_CONTAINER_multihashmap_destroy (room->messages);
  }

  if (room->contact_id)
    GNUNET_free(room->contact_id);

  GNUNET_free(room);
}

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get_room_message()

const struct GNUNET_MESSENGER_Message* get_room_message	(	const struct GNUNET_MESSENGER_Room *	room,
		const struct GNUNET_HashCode *	hash
	)

Returns a message locally stored from a map for a given hash in a room.

If no matching message is found, NULL gets returned.

Parameters

room	Room
hash	Hash of message

Returns

Message or NULL

Definition at line 82 of file messenger_api_room.c.

References GNUNET_CONTAINER_multihashmap_get(), and GNUNET_MESSENGER_Room::messages.

{
  return GNUNET_CONTAINER_multihashmap_get (room->messages, hash);
}

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handle_join_message()

static void handle_join_message ( struct GNUNET_MESSENGER_Room *  room, const struct GNUNET_MESSENGER_Message *  message, const struct GNUNET_HashCode *  hash  )

static

Definition at line 88 of file messenger_api_room.c.

References GNUNET_MESSENGER_Message::body, get_handle_contact_by_pubkey(), GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST, GNUNET_CONTAINER_multishortmap_put(), GNUNET_MESSENGER_Room::handle, GNUNET_MESSENGER_Message::header, GNUNET_MESSENGER_MessageBody::join, GNUNET_MESSENGER_MessageJoin::key, GNUNET_MESSENGER_Room::members, and GNUNET_MESSENGER_MessageHeader::sender_id.

Referenced by handle_room_message().

{
  struct GNUNET_MESSENGER_Contact *contact = get_handle_contact_by_pubkey (room->handle, &(message->body.join.key));

  if (contact)
    GNUNET_CONTAINER_multishortmap_put (room->members, &(message->header.sender_id), contact,
                                        GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST);
}

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handle_leave_message()

static void handle_leave_message ( struct GNUNET_MESSENGER_Room *  room, const struct GNUNET_MESSENGER_Message *  message, const struct GNUNET_HashCode *  hash  )

static

Definition at line 99 of file messenger_api_room.c.

References GNUNET_CONTAINER_multishortmap_remove_all(), GNUNET_MESSENGER_Message::header, GNUNET_MESSENGER_Room::members, and GNUNET_MESSENGER_MessageHeader::sender_id.

Referenced by handle_room_message().

{
  GNUNET_CONTAINER_multishortmap_remove_all (room->members, &(message->header.sender_id));
}

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handle_name_message()

static void handle_name_message ( struct GNUNET_MESSENGER_Room *  room, const struct GNUNET_MESSENGER_Message *  message, const struct GNUNET_HashCode *  hash  )

static

Definition at line 106 of file messenger_api_room.c.

References GNUNET_MESSENGER_Message::body, GNUNET_CONTAINER_multishortmap_get(), GNUNET_MESSENGER_Message::header, GNUNET_MESSENGER_Room::members, GNUNET_MESSENGER_MessageName::name, GNUNET_MESSENGER_MessageBody::name, GNUNET_MESSENGER_MessageHeader::sender_id, and set_contact_name().

Referenced by handle_room_message().

{
  struct GNUNET_MESSENGER_Contact *contact = GNUNET_CONTAINER_multishortmap_get (room->members,
                                                                                 &(message->header.sender_id));

  if (contact)
    set_contact_name (contact, message->body.name.name);
}

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handle_key_message()

static void handle_key_message ( struct GNUNET_MESSENGER_Room *  room, const struct GNUNET_MESSENGER_Message *  message, const struct GNUNET_HashCode *  hash  )

static

Definition at line 117 of file messenger_api_room.c.

References GNUNET_MESSENGER_Message::body, GNUNET_CONTAINER_multishortmap_get(), GNUNET_MESSENGER_Room::handle, GNUNET_MESSENGER_Message::header, GNUNET_MESSENGER_MessageKey::key, GNUNET_MESSENGER_MessageBody::key, GNUNET_MESSENGER_Room::members, GNUNET_MESSENGER_MessageHeader::sender_id, and swap_handle_contact_by_pubkey().

Referenced by handle_room_message().

{
  struct GNUNET_MESSENGER_Contact *contact = GNUNET_CONTAINER_multishortmap_get (room->members,
                                                                                 &(message->header.sender_id));

  if (contact)
    swap_handle_contact_by_pubkey (room->handle, contact, &(message->body.key.key));
}

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handle_id_message()

static void handle_id_message ( struct GNUNET_MESSENGER_Room *  room, const struct GNUNET_MESSENGER_Message *  message, const struct GNUNET_HashCode *  hash  )

static

Definition at line 128 of file messenger_api_room.c.

References GNUNET_MESSENGER_Message::body, GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST, GNUNET_CONTAINER_multishortmap_get(), GNUNET_CONTAINER_multishortmap_put(), GNUNET_CONTAINER_multishortmap_remove(), GNUNET_OK, GNUNET_MESSENGER_Message::header, GNUNET_MESSENGER_MessageId::id, GNUNET_MESSENGER_MessageBody::id, GNUNET_MESSENGER_Room::members, and GNUNET_MESSENGER_MessageHeader::sender_id.

Referenced by handle_room_message().

{
  struct GNUNET_MESSENGER_Contact *contact = GNUNET_CONTAINER_multishortmap_get (room->members,
                                                                                 &(message->header.sender_id));

  if ((contact) && (GNUNET_OK
      == GNUNET_CONTAINER_multishortmap_put (room->members, &(message->body.id.id), contact,
                                             GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST)))
    GNUNET_CONTAINER_multishortmap_remove (room->members, &(message->header.sender_id), contact);
}

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handle_miss_message()

static void handle_miss_message ( struct GNUNET_MESSENGER_Room *  room, const struct GNUNET_MESSENGER_Message *  message, const struct GNUNET_HashCode *  hash  )

static

Definition at line 141 of file messenger_api_room.c.

References GNUNET_MESSENGER_Message::body, GNUNET_MESSENGER_Room::contact_id, GNUNET_MESSENGER_Room::entries, find_list_tunnels(), GNUNET_memcmp, GNUNET_MESSENGER_Message::header, GNUNET_MESSENGER_MessageBody::miss, GNUNET_MESSENGER_MessageMiss::peer, remove_from_list_tunnels(), and GNUNET_MESSENGER_MessageHeader::sender_id.

Referenced by handle_room_message().

{
  if ((room->contact_id) && (0 == GNUNET_memcmp(&(message->header.sender_id), room->contact_id)))
  {
    struct GNUNET_MESSENGER_ListTunnel *match = find_list_tunnels (&(room->entries), &(message->body.miss.peer), NULL);

    if (match)
      remove_from_list_tunnels (&(room->entries), match);
  }
}

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handle_room_message()

void handle_room_message	(	struct GNUNET_MESSENGER_Room *	room,
		const struct GNUNET_MESSENGER_Message *	message,
		const struct GNUNET_HashCode *	hash
	)

Handles a message with a given hash in a room for the client API to update members and its information.

The function also stores the message in map locally for access afterwards.

Parameters

room	Room
message	Message
hash	Hash of message

Definition at line 154 of file messenger_api_room.c.

References copy_message(), destroy_message(), GNUNET_CONTAINER_multihashmap_contains(), GNUNET_CONTAINER_multihashmap_put(), GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST, 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_NO, GNUNET_OK, handle_id_message(), handle_join_message(), handle_key_message(), handle_leave_message(), handle_miss_message(), handle_name_message(), GNUNET_MESSENGER_Message::header, GNUNET_MESSENGER_MessageHeader::kind, and GNUNET_MESSENGER_Room::messages.

Referenced by handle_recv_message().

{
  if (GNUNET_NO != GNUNET_CONTAINER_multihashmap_contains (room->messages, hash))
    return;

  switch (message->header.kind)
  {
  case GNUNET_MESSENGER_KIND_JOIN:
    handle_join_message (room, message, hash);
    break;
  case GNUNET_MESSENGER_KIND_LEAVE:
    handle_leave_message (room, message, hash);
    break;
  case GNUNET_MESSENGER_KIND_NAME:
    handle_name_message (room, message, hash);
    break;
  case GNUNET_MESSENGER_KIND_KEY:
    handle_key_message (room, message, hash);
    break;
  case GNUNET_MESSENGER_KIND_ID:
    handle_id_message (room, message, hash);
    break;
  case GNUNET_MESSENGER_KIND_MISS:
    handle_miss_message (room, message, hash);
    break;
  default:
    break;
  }

  struct GNUNET_MESSENGER_Message *clone = copy_message (message);

  if (GNUNET_OK != GNUNET_CONTAINER_multihashmap_put (room->messages, hash, clone,
                                                      GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST))
    destroy_message (clone);
}

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