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

GNUnet MESSENGER service. More...

#include "gnunet-service-messenger.h"
#include "gnunet-service-messenger_handle.h"
#include "gnunet-service-messenger_message_kind.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 callback_found_message (void *cls, struct GNUNET_MESSENGER_SrvRoom *room, const struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash)
 
static void handle_get_message (void *cls, const struct GNUNET_MESSENGER_GetMessage *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_GetMessage, NULL), GNUNET_MQ_handler_end())
 Define "main" method using service macro. More...
 

Variables

struct GNUNET_MESSENGER_Servicemessenger
 

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 42 of file gnunet-service-messenger.c.

44 {
46  return GNUNET_OK;
47 }
struct GNUNET_MessageHeader * msg
Definition: 005.c:2
@ GNUNET_OK
Definition: gnunet_common.h:95
#define GNUNET_MQ_check_zero_termination(m)
Insert code for a "check_" function that verifies that a given variable-length message received over ...

References GNUNET_MQ_check_zero_termination, GNUNET_OK, and msg.

◆ handle_create()

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

Definition at line 50 of file gnunet-service-messenger.c.

52 {
53  struct GNUNET_MESSENGER_Client *msg_client = cls;
54 
55  const char *name = ((const char*) msg) + sizeof(*msg);
56 
57  GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Handle created with name: %s\n", name);
58 
59  setup_handle_name (msg_client->handle, strlen (name) > 0 ? name : NULL);
60 
62 }
void setup_handle_name(struct GNUNET_MESSENGER_SrvHandle *handle, const char *name)
Tries to set the name and EGO key of a handle initially by looking up a specific name.
#define GNUNET_log(kind,...)
@ GNUNET_ERROR_TYPE_DEBUG
void GNUNET_SERVICE_client_continue(struct GNUNET_SERVICE_Client *c)
Continue receiving further messages from the given client.
Definition: service.c:2244
const char * name
struct GNUNET_SERVICE_Client * client
struct GNUNET_MESSENGER_SrvHandle * handle

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

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◆ handle_update()

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

Definition at line 65 of file gnunet-service-messenger.c.

67 {
68  struct GNUNET_MESSENGER_Client *msg_client = cls;
69 
70  update_handle (msg_client->handle);
71 
73 }
void update_handle(struct GNUNET_MESSENGER_SrvHandle *handle)
Tries to change the key pair of an EGO of a handle under the same name and informs all rooms about th...

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

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◆ handle_destroy()

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

Definition at line 76 of file gnunet-service-messenger.c.

78 {
79  struct GNUNET_MESSENGER_Client *msg_client = cls;
80 
81  GNUNET_SERVICE_client_drop (msg_client->client);
82 }
void GNUNET_SERVICE_client_drop(struct GNUNET_SERVICE_Client *c)
Ask the server to disconnect from the given client.
Definition: service.c:2325

References GNUNET_MESSENGER_Client::client, and GNUNET_SERVICE_client_drop().

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◆ check_set_name()

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

Definition at line 85 of file gnunet-service-messenger.c.

87 {
89  return GNUNET_OK;
90 }

References GNUNET_MQ_check_zero_termination, GNUNET_OK, and msg.

◆ handle_set_name()

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

Definition at line 93 of file gnunet-service-messenger.c.

95 {
96  struct GNUNET_MESSENGER_Client *msg_client = cls;
97 
98  const char *name = ((const char*) msg) + sizeof(*msg);
99 
100  GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Handles name is now: %s\n", name);
101 
102  set_handle_name (msg_client->handle, name);
103 
105 }
void set_handle_name(struct GNUNET_MESSENGER_SrvHandle *handle, const char *name)
Tries to rename the handle which implies renaming the EGO its using and moving all related data into ...

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

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◆ handle_room_open()

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

Definition at line 108 of file gnunet-service-messenger.c.

110 {
111  struct GNUNET_MESSENGER_Client *msg_client = cls;
112 
113  GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Opening room: %s\n", GNUNET_h2s (&(msg->key)));
114 
115  if (GNUNET_YES == open_handle_room (msg_client->handle, &(msg->key)))
116  {
117  const struct GNUNET_ShortHashCode *member_id = get_handle_member_id (msg_client->handle, &(msg->key));
118 
119  GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Opening room with member id: %s\n", GNUNET_sh2s (member_id));
120 
122  struct GNUNET_MQ_Envelope *env;
123 
125  GNUNET_memcpy(&(response->key), &(msg->key), sizeof(msg->key));
126  GNUNET_MQ_send (msg_client->handle->mq, env);
127  }
128  else
129  GNUNET_log(GNUNET_ERROR_TYPE_ERROR, "Opening room failed: %s\n", GNUNET_h2s (&(msg->key)));
130 
132 }
struct GNUNET_MQ_Envelope * env
Definition: 005.c:1
static struct MHD_Response * response
Our canonical response.
int open_handle_room(struct GNUNET_MESSENGER_SrvHandle *handle, const struct GNUNET_HashCode *key)
Makes a given handle a member of the room using a specific key and opens the room from the handles se...
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.
#define GNUNET_memcpy(dst, src, n)
Call memcpy() but check for n being 0 first.
@ GNUNET_YES
Definition: gnunet_common.h:97
const char * GNUNET_sh2s(const struct GNUNET_ShortHashCode *shc)
Convert a short hash value 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_ERROR
void GNUNET_MQ_send(struct GNUNET_MQ_Handle *mq, struct GNUNET_MQ_Envelope *ev)
Send a message with the given message queue.
Definition: mq.c:355
#define GNUNET_MQ_msg(mvar, type)
Allocate a GNUNET_MQ_Envelope.
Definition: gnunet_mq_lib.h:67
#define GNUNET_MESSAGE_TYPE_MESSENGER_ROOM_OPEN
General message to confirm interaction with a room.
A 256-bit hashcode.

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_SrvHandle::mq, msg, open_handle_room(), and response.

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◆ handle_room_entry()

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

Definition at line 135 of file gnunet-service-messenger.c.

137 {
138  struct GNUNET_MESSENGER_Client *msg_client = cls;
139 
140  GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Entering room: %s, %s\n", GNUNET_h2s (&(msg->key)), GNUNET_i2s (&(msg->door)));
141 
142  if (GNUNET_YES == entry_handle_room (msg_client->handle, &(msg->door), &(msg->key)))
143  {
144  const struct GNUNET_ShortHashCode *member_id = get_handle_member_id (msg_client->handle, &(msg->key));
145 
146  GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Entering room with member id: %s\n", GNUNET_sh2s (member_id));
147 
149  struct GNUNET_MQ_Envelope *env;
150 
152  GNUNET_memcpy(&(response->door), &(msg->door), sizeof(msg->door));
153  GNUNET_memcpy(&(response->key), &(msg->key), sizeof(msg->key));
154  GNUNET_MQ_send (msg_client->handle->mq, env);
155  }
156  else
157  GNUNET_log(GNUNET_ERROR_TYPE_ERROR, "Entrance into room failed: %s, %s\n", GNUNET_h2s (&(msg->key)),
158  GNUNET_i2s (&(msg->door)));
159 
161 }
int entry_handle_room(struct GNUNET_MESSENGER_SrvHandle *handle, const struct GNUNET_PeerIdentity *door, const struct GNUNET_HashCode *key)
Makes a given handle a member of the room using a specific key and enters the room through a tunnel t...
const char * GNUNET_i2s(const struct GNUNET_PeerIdentity *pid)
Convert a peer identity to a string (for printing debug messages).
#define GNUNET_MESSAGE_TYPE_MESSENGER_ROOM_ENTRY

References GNUNET_MESSENGER_Client::client, 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_SrvHandle::mq, msg, and response.

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◆ handle_room_close()

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

Definition at line 164 of file gnunet-service-messenger.c.

166 {
167  struct GNUNET_MESSENGER_Client *msg_client = cls;
168 
169  GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Closing room: %s\n", GNUNET_h2s (&(msg->key)));
170 
171  if (GNUNET_YES == close_handle_room (msg_client->handle, &(msg->key)))
172  {
173  const struct GNUNET_ShortHashCode *member_id = get_handle_member_id (msg_client->handle, &(msg->key));
174 
175  GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Closing room with member id: %s\n", GNUNET_sh2s (member_id));
176 
178  struct GNUNET_MQ_Envelope *env;
179 
181  GNUNET_memcpy(&(response->key), &(msg->key), sizeof(msg->key));
182  GNUNET_MQ_send (msg_client->handle->mq, env);
183  }
184  else
185  GNUNET_log(GNUNET_ERROR_TYPE_ERROR, "Closing room failed: %s\n", GNUNET_h2s (&(msg->key)));
186 
188 }
int close_handle_room(struct GNUNET_MESSENGER_SrvHandle *handle, const struct GNUNET_HashCode *key)
Removes the membership of the room using a specific key and closes it if no other handle from this se...
#define GNUNET_MESSAGE_TYPE_MESSENGER_ROOM_CLOSE

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_SrvHandle::mq, msg, and response.

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◆ check_send_message()

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

Definition at line 191 of file gnunet-service-messenger.c.

193 {
194  const uint16_t full_length = ntohs (msg->header.size);
195 
196  if (full_length < sizeof(*msg))
197  return GNUNET_NO;
198 
199  const enum GNUNET_MESSENGER_MessageFlags flags = (
200  (enum GNUNET_MESSENGER_MessageFlags) (msg->flags)
201  );
202 
203  const uint16_t length = full_length - sizeof(*msg);
204  const char *buffer = ((const char*) msg) + sizeof(*msg);
205 
206  ssize_t key_length = 0;
207 
208  if (!(flags & GNUNET_MESSENGER_FLAG_PRIVATE))
209  goto check_for_message;
210 
211  struct GNUNET_IDENTITY_PublicKey public_key;
212 
213  key_length = GNUNET_IDENTITY_read_key_from_buffer(&public_key, buffer, length);
214 
215 check_for_message:
216  if (key_length < 0)
217  return GNUNET_NO;
218 
219  const uint16_t msg_length = length - key_length;
220  const char* msg_buffer = buffer + key_length;
221 
222  struct GNUNET_MESSENGER_Message message;
223 
225  return GNUNET_NO;
226 
227  if (GNUNET_YES != decode_message (&message, msg_length, msg_buffer, GNUNET_NO, NULL))
228  return GNUNET_NO;
229 
230  if (GNUNET_YES != filter_message_sending(&message))
231  return GNUNET_NO;
232 
233  return GNUNET_OK;
234 }
static const int key_length
Fixed size of the public/private keys.
Definition: gnunet-abd.c:211
@ GNUNET_NO
Definition: gnunet_common.h:94
ssize_t GNUNET_IDENTITY_read_key_from_buffer(struct GNUNET_IDENTITY_PublicKey *key, const void *buffer, size_t len)
Reads a GNUNET_IDENTITY_PublicKey from a compact buffer.
Definition: identity_api.c:994
GNUNET_MESSENGER_MessageFlags
Enum for the different supported flags used by message handling Compatible flags can be OR'ed togethe...
@ GNUNET_MESSENGER_KIND_UNKNOWN
The unknown kind.
@ GNUNET_MESSENGER_FLAG_PRIVATE
The private flag.
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.
int filter_message_sending(const struct GNUNET_MESSENGER_Message *message)
Returns if a specific kind of message should be sent by a client.
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.
An identity key as per LSD0001.
uint16_t size
The length of the struct (in bytes, including the length field itself), in big-endian format.

References decode_message(), filter_message_sending(), get_message_kind_size(), GNUNET_IDENTITY_read_key_from_buffer(), GNUNET_MESSENGER_FLAG_PRIVATE, GNUNET_MESSENGER_KIND_UNKNOWN, GNUNET_NO, GNUNET_OK, GNUNET_YES, key_length, msg, and GNUNET_MessageHeader::size.

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◆ handle_send_message()

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

Definition at line 237 of file gnunet-service-messenger.c.

239 {
240  struct GNUNET_MESSENGER_Client *msg_client = cls;
241 
242  const enum GNUNET_MESSENGER_MessageFlags flags = (
243  (enum GNUNET_MESSENGER_MessageFlags) (msg->flags)
244  );
245 
246  const struct GNUNET_HashCode *key = &(msg->key);
247  const char *buffer = ((const char*) msg) + sizeof(*msg);
248 
249  const uint16_t length = ntohs (msg->header.size) - sizeof(*msg);
250  ssize_t key_length = 0;
251 
252  struct GNUNET_IDENTITY_PublicKey public_key;
253 
254  if (flags & GNUNET_MESSENGER_FLAG_PRIVATE)
256  &public_key, buffer, length
257  );
258 
259  const uint16_t msg_length = length - key_length;
260  const char* msg_buffer = buffer + key_length;
261 
262  struct GNUNET_MESSENGER_Message message;
263  decode_message (&message, msg_length, msg_buffer, GNUNET_NO, NULL);
264 
265  if ((flags & GNUNET_MESSENGER_FLAG_PRIVATE) &&
266  (GNUNET_YES != encrypt_message(&message, &public_key)))
267  {
268  GNUNET_log(GNUNET_ERROR_TYPE_ERROR, "Encrypting message failed: Message got dropped!\n");
269 
270  goto end_handling;
271  }
272 
273  GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Sending message: %s to %s\n",
274  GNUNET_MESSENGER_name_of_kind (message.header.kind), GNUNET_h2s (key));
275 
276  if (GNUNET_YES != send_handle_message (msg_client->handle, key, &message))
277  GNUNET_log(GNUNET_ERROR_TYPE_ERROR, "Sending message failed: %s to %s\n",
278  GNUNET_MESSENGER_name_of_kind (message.header.kind), GNUNET_h2s (key));
279 
280 end_handling:
282 }
struct GNUNET_HashCode key
The key used in the DHT.
int send_handle_message(struct GNUNET_MESSENGER_SrvHandle *handle, const struct GNUNET_HashCode *key, const struct GNUNET_MESSENGER_Message *message)
Sends a message from a given handle to the room using a specific key.
const char * GNUNET_MESSENGER_name_of_kind(enum GNUNET_MESSENGER_MessageKind kind)
Get the name of a message kind.
Definition: messenger_api.c:35
int encrypt_message(struct GNUNET_MESSENGER_Message *message, const struct GNUNET_IDENTITY_PublicKey *key)
Encrypts a message using a given public key and replaces its body and kind with the now private encry...
A 512-bit hashcode.

References GNUNET_MESSENGER_Client::client, decode_message(), encrypt_message(), GNUNET_ERROR_TYPE_DEBUG, GNUNET_ERROR_TYPE_ERROR, GNUNET_h2s(), GNUNET_IDENTITY_read_key_from_buffer(), GNUNET_log, GNUNET_MESSENGER_FLAG_PRIVATE, GNUNET_MESSENGER_name_of_kind(), GNUNET_NO, GNUNET_SERVICE_client_continue(), GNUNET_YES, GNUNET_MESSENGER_Client::handle, GNUNET_MESSENGER_Message::header, key, key_length, GNUNET_MESSENGER_MessageHeader::kind, msg, send_handle_message(), and GNUNET_MessageHeader::size.

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◆ callback_found_message()

static void callback_found_message ( void *  cls,
struct GNUNET_MESSENGER_SrvRoom room,
const struct GNUNET_MESSENGER_Message message,
const struct GNUNET_HashCode hash 
)
static

Definition at line 285 of file gnunet-service-messenger.c.

289 {
290  struct GNUNET_MESSENGER_Client *msg_client = cls;
291 
292  if (!message)
293  {
294  send_room_message(room, msg_client->handle, create_message_request(hash));
295  return;
296  }
297 
299 
300  struct GNUNET_MESSENGER_Member *member = get_store_member_of(store, message);
301 
302  if (!member)
303  {
304  GNUNET_log(GNUNET_ERROR_TYPE_ERROR, "Sender of message (%s) unknown!\n", GNUNET_h2s (hash));
305  return;
306  }
307 
308  struct GNUNET_MESSENGER_MemberSession *session = get_member_session_of(member, message, hash);
309 
310  if (session)
311  notify_handle_message (msg_client->handle, get_room_key(room), session, message, hash);
312 }
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.
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.
struct GNUNET_MESSENGER_Message * create_message_request(const struct GNUNET_HashCode *hash)
Creates and allocates a new request message containing the hash of a missing 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.
const struct GNUNET_HashCode * get_room_key(const struct GNUNET_MESSENGER_SrvRoom *room)
Returns the shared secret you need to access a room.
struct GNUNET_MESSENGER_MemberStore * get_room_member_store(struct GNUNET_MESSENGER_SrvRoom *room)
Returns the used member store of a given room.
struct GNUNET_MESSENGER_MemberStore * store

References create_message_request(), get_member_session_of(), get_room_key(), get_room_member_store(), get_store_member_of(), GNUNET_ERROR_TYPE_ERROR, GNUNET_h2s(), GNUNET_log, GNUNET_MESSENGER_Client::handle, GNUNET_MESSENGER_MemberSession::member, notify_handle_message(), GNUNET_MESSENGER_MemberStore::room, send_room_message(), and GNUNET_MESSENGER_Member::store.

Referenced by handle_get_message().

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◆ handle_get_message()

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

Definition at line 315 of file gnunet-service-messenger.c.

317 {
318  struct GNUNET_MESSENGER_Client *msg_client = cls;
319 
320  GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Requesting message from room: %s\n", GNUNET_h2s (&(msg->key)));
321 
322  struct GNUNET_MESSENGER_SrvRoom *room = get_service_room (messenger, &(msg->key));
323 
324  if (!room)
325  {
326  GNUNET_log(GNUNET_ERROR_TYPE_ERROR, "Room not found: %s\n", GNUNET_h2s (&(msg->key)));
327  goto end_handling;
328  }
329 
331 
332  struct GNUNET_MESSENGER_Member *member = get_store_member(member_store, get_handle_member_id(
333  msg_client->handle, &(msg->key)
334  ));
335 
336  if (!member)
337  {
338  GNUNET_log(GNUNET_ERROR_TYPE_ERROR, "Member not valid to request a message!\n");
339  goto end_handling;
340  }
341 
343 
344  if (!session)
345  {
346  GNUNET_log(GNUNET_ERROR_TYPE_ERROR, "Session not valid to request a message!\n");
347  goto end_handling;
348  }
349 
350  request_room_message (room, &(msg->hash), session, callback_found_message, msg_client);
351 
352 end_handling:
354 }
struct GNUNET_MESSENGER_Service * messenger
static void callback_found_message(void *cls, struct GNUNET_MESSENGER_SrvRoom *room, const struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash)
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_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.
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.
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.
struct GNUNET_MESSENGER_SrvRoom * get_service_room(const struct GNUNET_MESSENGER_Service *service, const struct GNUNET_HashCode *key)
Returns the room identified by a given key for a service.
struct GNUNET_IDENTITY_PublicKey pub

References callback_found_message(), GNUNET_MESSENGER_Client::client, get_handle_ego(), get_handle_member_id(), get_member_session(), get_room_member_store(), get_service_room(), get_store_member(), GNUNET_ERROR_TYPE_DEBUG, GNUNET_ERROR_TYPE_ERROR, GNUNET_h2s(), GNUNET_log, GNUNET_SERVICE_client_continue(), GNUNET_MESSENGER_Client::handle, GNUNET_MESSENGER_MemberSession::member, messenger, msg, GNUNET_MESSENGER_Ego::pub, request_room_message(), and GNUNET_MESSENGER_MemberStore::room.

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◆ callback_client_connect()

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

Definition at line 357 of file gnunet-service-messenger.c.

360 {
361  struct GNUNET_MESSENGER_Client *msg_client = GNUNET_new(struct GNUNET_MESSENGER_Client);
362 
363  msg_client->client = client;
364  msg_client->handle = add_service_handle (messenger, mq);
365 
366  return msg_client;
367 }
struct GNUNET_MQ_Handle * mq
Definition: 003.c:5
struct GNUNET_MESSENGER_SrvHandle * add_service_handle(struct GNUNET_MESSENGER_Service *service, struct GNUNET_MQ_Handle *mq)
Creates and adds a new handle to a service using a given message queue.
#define GNUNET_new(type)
Allocate a struct or union of the given type.

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

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◆ callback_client_disconnect()

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

Definition at line 370 of file gnunet-service-messenger.c.

373 {
374  struct GNUNET_MESSENGER_Client *msg_client = internal_cls;
375 
376  remove_service_handle (messenger, msg_client->handle);
377 
378  GNUNET_free(msg_client);
379 }
void remove_service_handle(struct GNUNET_MESSENGER_Service *service, struct GNUNET_MESSENGER_SrvHandle *handle)
Removes a handle from a service and destroys it.
#define GNUNET_free(ptr)
Wrapper around free.

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

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◆ run()

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

Setup MESSENGER internals.

Parameters
[in/out]cls closure
[in]configconfiguration to use
[in/out]service the initialized service

Definition at line 389 of file gnunet-service-messenger.c.

392 {
394 
395  if (!messenger)
397 }
static struct GNUNET_SERVICE_Handle * service
Handle to our service instance.
struct GNUNET_MESSENGER_Service * create_service(const struct GNUNET_CONFIGURATION_Handle *config, struct GNUNET_SERVICE_Handle *service_handle)
Creates and allocates a new service using a given config and a GNUnet service handle.
static const struct GNUNET_CONFIGURATION_Handle * config
void GNUNET_SCHEDULER_shutdown(void)
Request the shutdown of a scheduler.
Definition: scheduler.c:531

References config, create_service(), GNUNET_SCHEDULER_shutdown(), messenger, and service.

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◆ GNUNET_SERVICE_MAIN()

Define "main" method using service macro.

Variable Documentation

◆ messenger

struct GNUNET_MESSENGER_Service* messenger