gnunet-service-messenger.c File Reference

GNUnet MESSENGER service. More...

#include "gnunet-service-messenger.h"
#include "gnunet-service-messenger_service.h"
#include "messenger_api_message.h"

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

Go to the source code of this file.

Data Structures
struct	GNUNET_MESSENGER_Client

Functions
static int	check_create (void *cls, const struct GNUNET_MESSENGER_CreateMessage *msg)
static void	handle_create (void *cls, const struct GNUNET_MESSENGER_CreateMessage *msg)
static void	handle_update (void *cls, const struct GNUNET_MESSENGER_UpdateMessage *msg)
static void	handle_destroy (void *cls, const struct GNUNET_MESSENGER_DestroyMessage *msg)
static int	check_set_name (void *cls, const struct GNUNET_MESSENGER_NameMessage *msg)
static void	handle_set_name (void *cls, const struct GNUNET_MESSENGER_NameMessage *msg)
static void	handle_room_open (void *cls, const struct GNUNET_MESSENGER_RoomMessage *msg)
static void	handle_room_entry (void *cls, const struct GNUNET_MESSENGER_RoomMessage *msg)
static void	handle_room_close (void *cls, const struct GNUNET_MESSENGER_RoomMessage *msg)
static int	check_send_message (void *cls, const struct GNUNET_MESSENGER_SendMessage *msg)
static void	handle_send_message (void *cls, const struct GNUNET_MESSENGER_SendMessage *msg)
static void	handle_get_message (void *cls, const struct GNUNET_MESSENGER_RecvMessage *msg)
static void *	callback_client_connect (void *cls, struct GNUNET_SERVICE_Client *client, struct GNUNET_MQ_Handle *mq)
static void	callback_client_disconnect (void *cls, struct GNUNET_SERVICE_Client *client, void *internal_cls)
static void	run (void *cls, const struct GNUNET_CONFIGURATION_Handle *config, struct GNUNET_SERVICE_Handle *service)
	Setup MESSENGER internals. More...
	GNUNET_SERVICE_MAIN (GNUNET_MESSENGER_SERVICE_NAME, GNUNET_SERVICE_OPTION_NONE, &run, &callback_client_connect, &callback_client_disconnect, NULL, GNUNET_MQ_hd_var_size(create, GNUNET_MESSAGE_TYPE_MESSENGER_CONNECTION_CREATE, struct GNUNET_MESSENGER_CreateMessage, NULL), GNUNET_MQ_hd_fixed_size(update, GNUNET_MESSAGE_TYPE_MESSENGER_CONNECTION_UPDATE, struct GNUNET_MESSENGER_UpdateMessage, NULL), GNUNET_MQ_hd_fixed_size(destroy, GNUNET_MESSAGE_TYPE_MESSENGER_CONNECTION_DESTROY, struct GNUNET_MESSENGER_DestroyMessage, NULL), GNUNET_MQ_hd_var_size(set_name, GNUNET_MESSAGE_TYPE_MESSENGER_CONNECTION_SET_NAME, struct GNUNET_MESSENGER_NameMessage, NULL), GNUNET_MQ_hd_fixed_size(room_open, GNUNET_MESSAGE_TYPE_MESSENGER_ROOM_OPEN, struct GNUNET_MESSENGER_RoomMessage, NULL), GNUNET_MQ_hd_fixed_size(room_entry, GNUNET_MESSAGE_TYPE_MESSENGER_ROOM_ENTRY, struct GNUNET_MESSENGER_RoomMessage, NULL), GNUNET_MQ_hd_fixed_size(room_close, GNUNET_MESSAGE_TYPE_MESSENGER_ROOM_CLOSE, struct GNUNET_MESSENGER_RoomMessage, NULL), GNUNET_MQ_hd_var_size(send_message, GNUNET_MESSAGE_TYPE_MESSENGER_ROOM_SEND_MESSAGE, struct GNUNET_MESSENGER_SendMessage, NULL), GNUNET_MQ_hd_fixed_size(get_message, GNUNET_MESSAGE_TYPE_MESSENGER_ROOM_GET_MESSAGE, struct GNUNET_MESSENGER_RecvMessage, NULL), GNUNET_MQ_handler_end())
	Define "main" method using service macro. More...

Variables
struct GNUNET_MESSENGER_Service *	messenger

Detailed Description

GNUnet MESSENGER service.

Author

Tobias Frisch

Definition in file gnunet-service-messenger.c.

Function Documentation

check_create()

static int check_create ( void *  cls, const struct GNUNET_MESSENGER_CreateMessage *  msg  )

static

Definition at line 40 of file gnunet-service-messenger.c.

References GNUNET_MQ_check_zero_termination, and GNUNET_OK.

{
  GNUNET_MQ_check_zero_termination(msg);
  return GNUNET_OK;
}

handle_create()

static void handle_create ( void *  cls, const struct GNUNET_MESSENGER_CreateMessage *  msg  )

static

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

References GNUNET_MESSENGER_Client::client, GNUNET_ERROR_TYPE_DEBUG, GNUNET_log, GNUNET_SERVICE_client_continue(), GNUNET_MESSENGER_Client::handle, name, and setup_handle_name().

{
  struct GNUNET_MESSENGER_Client *msg_client = cls;

  const char *name = ((const char*) msg) + sizeof(*msg);

  GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Handle created with name: %s\n", name);

  setup_handle_name (msg_client->handle, strlen (name) > 0? name : NULL);

  GNUNET_SERVICE_client_continue (msg_client->client);
}

Here is the call graph for this function:

handle_update()

static void handle_update ( void *  cls, const struct GNUNET_MESSENGER_UpdateMessage *  msg  )

static

Definition at line 61 of file gnunet-service-messenger.c.

References GNUNET_MESSENGER_Client::client, GNUNET_ERROR_TYPE_WARNING, GNUNET_log, GNUNET_OK, GNUNET_SERVICE_client_continue(), GNUNET_MESSENGER_Client::handle, and update_handle().

{
  struct GNUNET_MESSENGER_Client *msg_client = cls;

  if (GNUNET_OK != update_handle (msg_client->handle))
    GNUNET_log(GNUNET_ERROR_TYPE_WARNING, "Name is required to update key!\n");

  GNUNET_SERVICE_client_continue (msg_client->client);
}

Here is the call graph for this function:

handle_destroy()

static void handle_destroy ( void *  cls, const struct GNUNET_MESSENGER_DestroyMessage *  msg  )

static

Definition at line 72 of file gnunet-service-messenger.c.

References GNUNET_MESSENGER_Client::client, and GNUNET_SERVICE_client_drop().

{
  struct GNUNET_MESSENGER_Client *msg_client = cls;

  GNUNET_SERVICE_client_drop (msg_client->client);
}

Here is the call graph for this function:

check_set_name()

static int check_set_name ( void *  cls, const struct GNUNET_MESSENGER_NameMessage *  msg  )

static

Definition at line 80 of file gnunet-service-messenger.c.

References GNUNET_MQ_check_zero_termination, and GNUNET_OK.

{
  GNUNET_MQ_check_zero_termination(msg);
  return GNUNET_OK;
}

handle_set_name()

static void handle_set_name ( void *  cls, const struct GNUNET_MESSENGER_NameMessage *  msg  )

static

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

References GNUNET_MESSENGER_Client::client, GNUNET_ERROR_TYPE_DEBUG, GNUNET_ERROR_TYPE_ERROR, GNUNET_log, GNUNET_SERVICE_client_continue(), GNUNET_YES, GNUNET_MESSENGER_Client::handle, name, and set_handle_name().

{
  struct GNUNET_MESSENGER_Client *msg_client = cls;

  const char *name = ((const char*) msg) + sizeof(*msg);

  GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Handles name is now: %s\n", name);

  if (GNUNET_YES != set_handle_name (msg_client->handle, name))
    GNUNET_log(GNUNET_ERROR_TYPE_ERROR, "No valid name: %s\n", name);

  GNUNET_SERVICE_client_continue (msg_client->client);
}

Here is the call graph for this function:

handle_room_open()

static void handle_room_open ( void *  cls, const struct GNUNET_MESSENGER_RoomMessage *  msg  )

static

Definition at line 102 of file gnunet-service-messenger.c.

References GNUNET_MESSENGER_Client::client, env, get_handle_member_id(), GNUNET_ERROR_TYPE_DEBUG, GNUNET_ERROR_TYPE_ERROR, GNUNET_h2s(), GNUNET_log, GNUNET_memcpy, GNUNET_MESSAGE_TYPE_MESSENGER_ROOM_OPEN, GNUNET_MQ_msg, GNUNET_MQ_send(), GNUNET_SERVICE_client_continue(), GNUNET_sh2s(), GNUNET_YES, GNUNET_MESSENGER_Client::handle, GNUNET_MESSENGER_RoomMessage::key, GNUNET_MESSENGER_SrvHandle::mq, open_handle_room(), and response.

{
  struct GNUNET_MESSENGER_Client *msg_client = cls;

  GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Opening room: %s\n",
             GNUNET_h2s (&(msg->key)));

  if (GNUNET_YES == open_handle_room (msg_client->handle, &(msg->key)))
  {
    const struct GNUNET_ShortHashCode* member_id = get_handle_member_id(msg_client->handle, &(msg->key));

    GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Opening room with member id: %s\n",
               GNUNET_sh2s (member_id));

    struct GNUNET_MESSENGER_RoomMessage *response;
    struct GNUNET_MQ_Envelope *env;

    env = GNUNET_MQ_msg(response, GNUNET_MESSAGE_TYPE_MESSENGER_ROOM_OPEN);
    GNUNET_memcpy(&(response->key), &(msg->key), sizeof(msg->key));
    GNUNET_MQ_send (msg_client->handle->mq, env);
  }
  else
    GNUNET_log(GNUNET_ERROR_TYPE_ERROR, "Opening room failed: %s\n",
               GNUNET_h2s (&(msg->key)));

  GNUNET_SERVICE_client_continue (msg_client->client);
}

Here is the call graph for this function:

handle_room_entry()

static void handle_room_entry ( void *  cls, const struct GNUNET_MESSENGER_RoomMessage *  msg  )

static

Definition at line 131 of file gnunet-service-messenger.c.

References GNUNET_MESSENGER_Client::client, GNUNET_MESSENGER_RoomMessage::door, entry_handle_room(), env, get_handle_member_id(), GNUNET_ERROR_TYPE_DEBUG, GNUNET_ERROR_TYPE_ERROR, GNUNET_h2s(), GNUNET_i2s(), GNUNET_log, GNUNET_memcpy, GNUNET_MESSAGE_TYPE_MESSENGER_ROOM_ENTRY, GNUNET_MQ_msg, GNUNET_MQ_send(), GNUNET_SERVICE_client_continue(), GNUNET_sh2s(), GNUNET_YES, GNUNET_MESSENGER_Client::handle, GNUNET_MESSENGER_RoomMessage::key, GNUNET_MESSENGER_SrvHandle::mq, and response.

{
  struct GNUNET_MESSENGER_Client *msg_client = cls;

  GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Entering room: %s, %s\n",
             GNUNET_h2s (&(msg->key)), GNUNET_i2s (&(msg->door)));

  if (GNUNET_YES == entry_handle_room (msg_client->handle, &(msg->door), &(msg->key)))
  {
    const struct GNUNET_ShortHashCode* member_id = get_handle_member_id(msg_client->handle, &(msg->key));

    GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Entering room with member id: %s\n",
               GNUNET_sh2s (member_id));

    struct GNUNET_MESSENGER_RoomMessage *response;
    struct GNUNET_MQ_Envelope *env;

    env = GNUNET_MQ_msg(response, GNUNET_MESSAGE_TYPE_MESSENGER_ROOM_ENTRY);
    GNUNET_memcpy(&(response->door), &(msg->door), sizeof(msg->door));
    GNUNET_memcpy(&(response->key), &(msg->key), sizeof(msg->key));
    GNUNET_MQ_send (msg_client->handle->mq, env);
  }
  else
    GNUNET_log(GNUNET_ERROR_TYPE_ERROR, "Entrance into room failed: %s, %s\n",
               GNUNET_h2s (&(msg->key)), GNUNET_i2s (&(msg->door)));

  GNUNET_SERVICE_client_continue (msg_client->client);
}

Here is the call graph for this function:

handle_room_close()

static void handle_room_close ( void *  cls, const struct GNUNET_MESSENGER_RoomMessage *  msg  )

static

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

References GNUNET_MESSENGER_Client::client, close_handle_room(), env, get_handle_member_id(), GNUNET_ERROR_TYPE_DEBUG, GNUNET_ERROR_TYPE_ERROR, GNUNET_h2s(), GNUNET_log, GNUNET_memcpy, GNUNET_MESSAGE_TYPE_MESSENGER_ROOM_CLOSE, GNUNET_MQ_msg, GNUNET_MQ_send(), GNUNET_SERVICE_client_continue(), GNUNET_sh2s(), GNUNET_YES, GNUNET_MESSENGER_Client::handle, GNUNET_MESSENGER_RoomMessage::key, GNUNET_MESSENGER_SrvHandle::mq, and response.

{
  struct GNUNET_MESSENGER_Client *msg_client = cls;

  GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Closing room: %s\n", GNUNET_h2s (&(msg->key)));

  if (GNUNET_YES == close_handle_room (msg_client->handle, &(msg->key)))
  {
    const struct GNUNET_ShortHashCode* member_id = get_handle_member_id(msg_client->handle, &(msg->key));

    GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Closing room with member id: %s\n",
               GNUNET_sh2s (member_id));

    struct GNUNET_MESSENGER_RoomMessage *response;
    struct GNUNET_MQ_Envelope *env;

    env = GNUNET_MQ_msg(response, GNUNET_MESSAGE_TYPE_MESSENGER_ROOM_CLOSE);
    GNUNET_memcpy(&(response->key), &(msg->key), sizeof(msg->key));
    GNUNET_MQ_send (msg_client->handle->mq, env);
  }
  else
    GNUNET_log(GNUNET_ERROR_TYPE_ERROR, "Closing room failed: %s\n", GNUNET_h2s (&(msg->key)));

  GNUNET_SERVICE_client_continue (msg_client->client);
}

Here is the call graph for this function:

check_send_message()

static int check_send_message ( void *  cls, const struct GNUNET_MESSENGER_SendMessage *  msg  )

static

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

References decode_message(), GNUNET_NO, GNUNET_OK, GNUNET_YES, GNUNET_MESSENGER_SendMessage::header, GNUNET_MESSENGER_SendMessage::key, and GNUNET_MessageHeader::size.

{
  const uint16_t full_length = ntohs (msg->header.size) - sizeof(msg->header);

  if (full_length < sizeof(msg->key))
    return GNUNET_NO;

  const uint16_t length = full_length - sizeof(msg->key);
  const char *buffer = ((const char*) msg) + sizeof(*msg);

  struct GNUNET_MESSENGER_Message message;

  if (GNUNET_YES != decode_message (&message, length, buffer))
    return GNUNET_NO;

  return GNUNET_OK;
}

Here is the call graph for this function:

handle_send_message()

static void handle_send_message ( void *  cls, const struct GNUNET_MESSENGER_SendMessage *  msg  )

static

Definition at line 207 of file gnunet-service-messenger.c.

References GNUNET_MESSENGER_Client::client, decode_message(), GNUNET_ERROR_TYPE_DEBUG, GNUNET_ERROR_TYPE_ERROR, GNUNET_h2s(), GNUNET_log, GNUNET_MESSENGER_name_of_kind(), GNUNET_SERVICE_client_continue(), GNUNET_YES, GNUNET_MESSENGER_Client::handle, GNUNET_MESSENGER_SendMessage::header, GNUNET_MESSENGER_Message::header, key, GNUNET_MESSENGER_SendMessage::key, GNUNET_MESSENGER_MessageHeader::kind, send_handle_message(), and GNUNET_MessageHeader::size.

{
  struct GNUNET_MESSENGER_Client *msg_client = cls;

  const struct GNUNET_HashCode *key = &(msg->key);
  const char *buffer = ((const char*) msg) + sizeof(*msg);

  const uint16_t length = ntohs (msg->header.size) - sizeof(*msg);

  struct GNUNET_MESSENGER_Message message;
  decode_message (&message, length, buffer);

  GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Sending message: %s to %s\n",
             GNUNET_MESSENGER_name_of_kind (message.header.kind),
             GNUNET_h2s (key));

  if (GNUNET_YES != send_handle_message (msg_client->handle, key, &message))
    GNUNET_log(GNUNET_ERROR_TYPE_ERROR, "Sending message failed: %s to %s\n",
               GNUNET_MESSENGER_name_of_kind (message.header.kind),
               GNUNET_h2s (key));

  GNUNET_SERVICE_client_continue (msg_client->client);
}

Here is the call graph for this function:

handle_get_message()

static void handle_get_message ( void *  cls, const struct GNUNET_MESSENGER_RecvMessage *  msg  )

static

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

References GNUNET_MESSENGER_Client::client, get_room_message(), get_service_room(), GNUNET_ERROR_TYPE_DEBUG, GNUNET_ERROR_TYPE_ERROR, GNUNET_h2s(), GNUNET_log, GNUNET_SERVICE_client_continue(), GNUNET_YES, GNUNET_MESSENGER_Client::handle, GNUNET_MESSENGER_RecvMessage::hash, and GNUNET_MESSENGER_RecvMessage::key.

{
  struct GNUNET_MESSENGER_Client *msg_client = cls;

  GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Requesting message from room: %s\n",
             GNUNET_h2s (&(msg->key)));

  struct GNUNET_MESSENGER_SrvRoom *room = get_service_room (messenger, &(msg->key));

  if (room)
    get_room_message (room, msg_client->handle, &(msg->hash), GNUNET_YES);
  else
    GNUNET_log(GNUNET_ERROR_TYPE_ERROR, "Room not found: %s\n",
               GNUNET_h2s (&(msg->key)));

  GNUNET_SERVICE_client_continue (msg_client->client);
}

Here is the call graph for this function:

callback_client_connect()

static void* callback_client_connect ( void *  cls, struct GNUNET_SERVICE_Client *  client, struct GNUNET_MQ_Handle *  mq  )

static

Definition at line 251 of file gnunet-service-messenger.c.

References add_service_handle(), GNUNET_MESSENGER_Client::client, GNUNET_new, and GNUNET_MESSENGER_Client::handle.

Referenced by run().

{
  struct GNUNET_MESSENGER_Client *msg_client = GNUNET_new(struct GNUNET_MESSENGER_Client);

  msg_client->client = client;
  msg_client->handle = add_service_handle (messenger, mq);

  return msg_client;
}

Here is the call graph for this function:

Here is the caller graph for this function:

callback_client_disconnect()

static void callback_client_disconnect ( void *  cls, struct GNUNET_SERVICE_Client *  client, void *  internal_cls  )

static

Definition at line 262 of file gnunet-service-messenger.c.

References GNUNET_free, GNUNET_MESSENGER_Client::handle, and remove_service_handle().

Referenced by run().

{
  struct GNUNET_MESSENGER_Client *msg_client = internal_cls;

  remove_service_handle (messenger, msg_client->handle);

  GNUNET_free(msg_client);
}

Here is the call graph for this function:

Here is the caller graph for this function:

run()

static void run ( void *  cls, const struct GNUNET_CONFIGURATION_Handle *  config, struct GNUNET_SERVICE_Handle *  service  )

static

Setup MESSENGER internals.

Parameters

cls	closure
config	configuration to use
service	the initialized service

Definition at line 279 of file gnunet-service-messenger.c.

References GNUNET_MESSENGER_Service::cadet, callback_client_connect(), callback_client_disconnect(), create_service(), destroy(), get_message(), GNUNET_MESSAGE_TYPE_MESSENGER_CONNECTION_CREATE, GNUNET_MESSAGE_TYPE_MESSENGER_CONNECTION_DESTROY, GNUNET_MESSAGE_TYPE_MESSENGER_CONNECTION_SET_NAME, GNUNET_MESSAGE_TYPE_MESSENGER_CONNECTION_UPDATE, GNUNET_MESSAGE_TYPE_MESSENGER_ROOM_CLOSE, GNUNET_MESSAGE_TYPE_MESSENGER_ROOM_ENTRY, GNUNET_MESSAGE_TYPE_MESSENGER_ROOM_GET_MESSAGE, GNUNET_MESSAGE_TYPE_MESSENGER_ROOM_OPEN, GNUNET_MESSAGE_TYPE_MESSENGER_ROOM_SEND_MESSAGE, GNUNET_MESSENGER_SERVICE_NAME, GNUNET_MQ_handler_end, GNUNET_MQ_hd_fixed_size, GNUNET_MQ_hd_var_size, GNUNET_SCHEDULER_shutdown(), GNUNET_SERVICE_MAIN(), GNUNET_SERVICE_OPTION_NONE, GNUNET_MESSENGER_Service::identity, and send_message().

{
  messenger = create_service (config, service);

  if ((!messenger) || (!messenger->cadet) || (!messenger->identity))
    GNUNET_SCHEDULER_shutdown ();
}

Here is the call graph for this function:

GNUNET_SERVICE_MAIN()

GNUNET_SERVICE_MAIN	(	GNUNET_MESSENGER_SERVICE_NAME	,
		GNUNET_SERVICE_OPTION_NONE	,
		&	run,
		&	callback_client_connect,
		&	callback_client_disconnect,
		NULL	,
		GNUNET_MQ_hd_var_size(create, GNUNET_MESSAGE_TYPE_MESSENGER_CONNECTION_CREATE, struct GNUNET_MESSENGER_CreateMessage, NULL)	,
		GNUNET_MQ_hd_fixed_size(update, GNUNET_MESSAGE_TYPE_MESSENGER_CONNECTION_UPDATE, struct GNUNET_MESSENGER_UpdateMessage, NULL)	,
		GNUNET_MQ_hd_fixed_size(destroy, GNUNET_MESSAGE_TYPE_MESSENGER_CONNECTION_DESTROY, struct GNUNET_MESSENGER_DestroyMessage, NULL)	,
		GNUNET_MQ_hd_var_size(set_name, GNUNET_MESSAGE_TYPE_MESSENGER_CONNECTION_SET_NAME, struct GNUNET_MESSENGER_NameMessage, NULL)	,
		GNUNET_MQ_hd_fixed_size(room_open, GNUNET_MESSAGE_TYPE_MESSENGER_ROOM_OPEN, struct GNUNET_MESSENGER_RoomMessage, NULL)	,
		GNUNET_MQ_hd_fixed_size(room_entry, GNUNET_MESSAGE_TYPE_MESSENGER_ROOM_ENTRY, struct GNUNET_MESSENGER_RoomMessage, NULL)	,
		GNUNET_MQ_hd_fixed_size(room_close, GNUNET_MESSAGE_TYPE_MESSENGER_ROOM_CLOSE, struct GNUNET_MESSENGER_RoomMessage, NULL)	,
		GNUNET_MQ_hd_var_size(send_message, GNUNET_MESSAGE_TYPE_MESSENGER_ROOM_SEND_MESSAGE, struct GNUNET_MESSENGER_SendMessage, NULL)	,
		GNUNET_MQ_hd_fixed_size(get_message, GNUNET_MESSAGE_TYPE_MESSENGER_ROOM_GET_MESSAGE, struct GNUNET_MESSENGER_RecvMessage, NULL)	,
		GNUNET_MQ_handler_end()
	)

Define "main" method using service macro.

Referenced by run().

Here is the caller graph for this function:

Variable Documentation

messenger

struct GNUNET_MESSENGER_Service* messenger

Definition at line 37 of file gnunet-service-messenger.c.