GNUnet  0.11.x
messenger_api_handle.c
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1 /*
2  This file is part of GNUnet.
3  Copyright (C) 2020 GNUnet e.V.
4 
5  GNUnet is free software: you can redistribute it and/or modify it
6  under the terms of the GNU Affero General Public License as published
7  by the Free Software Foundation, either version 3 of the License,
8  or (at your option) any later version.
9 
10  GNUnet is distributed in the hope that it will be useful, but
11  WITHOUT ANY WARRANTY; without even the implied warranty of
12  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13  Affero General Public License for more details.
14 
15  You should have received a copy of the GNU Affero General Public License
16  along with this program. If not, see <http://www.gnu.org/licenses/>.
17 
18  SPDX-License-Identifier: AGPL3.0-or-later
19  */
26 #include "messenger_api_handle.h"
27 
31 {
33 
34  handle->cfg = cfg;
35  handle->mq = NULL;
36 
38  handle->identity_cls = identity_cls;
39 
40  handle->msg_callback = msg_callback;
41  handle->msg_cls = msg_cls;
42 
43  handle->name = NULL;
44  handle->pubkey = NULL;
45 
47  handle->reconnect_task = NULL;
48 
51 
52  return handle;
53 }
54 
55 static int
56 iterate_destroy_room (void *cls, const struct GNUNET_HashCode *key, void *value)
57 {
58  struct GNUNET_MESSENGER_Room *room = value;
59 
60  destroy_room (room);
61 
62  return GNUNET_YES;
63 }
64 
65 static int
66 iterate_destroy_contact (void *cls, const struct GNUNET_HashCode *key, void *value)
67 {
68  struct GNUNET_MESSENGER_Contact *contact = value;
69 
70  destroy_contact (contact);
71 
72  return GNUNET_YES;
73 }
74 
75 void
77 {
78  if (handle->reconnect_task)
80 
81  if (handle->mq)
82  GNUNET_MQ_destroy (handle->mq);
83 
84  if (handle->name)
85  GNUNET_free(handle->name);
86 
87  if (handle->pubkey)
88  GNUNET_free(handle->pubkey);
89 
90  if (handle->rooms)
91  {
93 
95  }
96 
97  if (handle->contacts)
98  {
100 
102  }
103 
104  GNUNET_free(handle->name);
105 }
106 
107 void
109 {
110  if (handle->name)
111  GNUNET_free(handle->name);
112 
113  handle->name = name? GNUNET_strdup(name) : NULL;
114 }
115 
116 const char*
118 {
119  return handle->name;
120 }
121 
122 void
124 {
125  if (!handle->pubkey)
126  handle->pubkey = GNUNET_new(struct GNUNET_IDENTITY_PublicKey);
127 
128  GNUNET_memcpy(handle->pubkey, pubkey, sizeof(*pubkey));
129 }
130 
131 const struct GNUNET_IDENTITY_PublicKey*
133 {
134  if (!handle->pubkey)
135  {
137  static struct GNUNET_IDENTITY_PublicKey pubkey;
138 
139  GNUNET_IDENTITY_ego_get_public_key (anonymous, &pubkey);
140 
141  return &pubkey;
142  }
143 
144  return handle->pubkey;
145 }
146 
149  const struct GNUNET_IDENTITY_PublicKey *pubkey)
150 {
151  struct GNUNET_HashCode hash;
152 
153  GNUNET_CRYPTO_hash (pubkey, sizeof(*pubkey), &hash);
154 
155  struct GNUNET_MESSENGER_Contact *contact = GNUNET_CONTAINER_multihashmap_get (handle->contacts, &hash);
156 
157  if (contact)
158  return contact;
159 
160  contact = create_contact (pubkey);
161 
162  if (GNUNET_OK == GNUNET_CONTAINER_multihashmap_put (handle->contacts, &hash, contact,
164  return contact;
165 
166  destroy_contact (contact);
167  return NULL;
168 }
169 
170 void
172  const struct GNUNET_IDENTITY_PublicKey *pubkey)
173 {
174  const struct GNUNET_HashCode *hash = get_contact_id_from_key (contact);
175 
176  if (GNUNET_YES == GNUNET_CONTAINER_multihashmap_remove (handle->contacts, hash, contact))
177  {
178  GNUNET_memcpy(&(contact->public_key), pubkey, sizeof(*pubkey));
179 
180  hash = get_contact_id_from_key (contact);
181 
182  GNUNET_CONTAINER_multihashmap_put (handle->contacts, hash, contact,
184  }
185 }
186 
187 void
189 {
190  struct GNUNET_MESSENGER_Room *room = GNUNET_CONTAINER_multihashmap_get (handle->rooms, key);
191 
192  if (room)
193  room->opened = GNUNET_YES;
194 }
195 
196 void
198  const struct GNUNET_HashCode *key)
199 {
200  struct GNUNET_MESSENGER_Room *room = GNUNET_CONTAINER_multihashmap_get (handle->rooms, key);
201 
202  if (room)
203  add_to_list_tunnels (&(room->entries), door);
204 }
205 
206 void
208 {
209  struct GNUNET_MESSENGER_Room *room = GNUNET_CONTAINER_multihashmap_get (handle->rooms, key);
210 
211  if ((room) && (GNUNET_YES == GNUNET_CONTAINER_multihashmap_remove (handle->rooms, key, room)))
212  destroy_room (room);
213 }
static const struct GNUNET_CONFIGURATION_Handle * cfg
Configuration we are using.
Definition: gnunet-abd.c:36
const struct GNUNET_IDENTITY_PublicKey * get_handle_key(const struct GNUNET_MESSENGER_Handle *handle)
Returns the public key of a given handle.
void entry_handle_room_at(struct GNUNET_MESSENGER_Handle *handle, const struct GNUNET_PeerIdentity *door, const struct GNUNET_HashCode *key)
Adds a tunnel for a room known to a handle identified by a given key to a list of opened connections...
struct GNUNET_CONTAINER_MultiHashMap * contacts
void close_handle_room(struct GNUNET_MESSENGER_Handle *handle, const struct GNUNET_HashCode *key)
Destroys and so implicitly closes a room known to a handle identified by a given key.
void destroy_contact(struct GNUNET_MESSENGER_SrvContact *contact)
Destroys a contact and frees its memory fully.
void destroy_room(struct GNUNET_MESSENGER_SrvRoom *room)
Destroys a room and frees its memory fully.
struct GNUNET_IDENTITY_PublicKey public_key
struct GNUNET_MESSENGER_SrvContact * create_contact(const struct GNUNET_IDENTITY_PublicKey *key)
Creates and allocates a new contact with a given public key from an EGO.
#define GNUNET_memcpy(dst, src, n)
Call memcpy() but check for n being 0 first.
const char * get_handle_name(const struct GNUNET_MESSENGER_Handle *handle)
Returns the current name of a given handle or NULL if no valid name was assigned yet.
struct GNUNET_SCHEDULER_Task * reconnect_task
#define GNUNET_new(type)
Allocate a struct or union of the given type.
void add_to_list_tunnels(struct GNUNET_MESSENGER_ListTunnels *tunnels, const struct GNUNET_PeerIdentity *peer)
Adds a specific peer from a tunnel to the end of the list.
void GNUNET_IDENTITY_ego_get_public_key(struct GNUNET_IDENTITY_Ego *ego, struct GNUNET_IDENTITY_PublicKey *pk)
Get the identifier (public key) of an ego.
Definition: identity_api.c:652
#define GNUNET_strdup(a)
Wrapper around GNUNET_xstrdup_.
struct GNUNET_MQ_Handle * mq
struct GNUNET_MESSENGER_ListTunnels entries
void * GNUNET_CONTAINER_multihashmap_get(const struct GNUNET_CONTAINER_MultiHashMap *map, const struct GNUNET_HashCode *key)
Given a key find a value in the map matching the key.
Handle for an ego.
Definition: identity.h:36
, &#39; bother checking if a value already exists (faster than GNUNET_CONTAINER_MULTIHASHMAPOPTION_...
static char * value
Value of the record to add/remove.
void(* GNUNET_MESSENGER_MessageCallback)(void *cls, const struct GNUNET_MESSENGER_Room *room, const struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash)
Method called whenever a message is sent or received from a room.
void GNUNET_CRYPTO_hash(const void *block, size_t size, struct GNUNET_HashCode *ret)
Compute hash of a given block.
Definition: crypto_hash.c:48
struct GNUNET_TIME_Relative GNUNET_TIME_relative_get_zero_(void)
Return relative time of 0ms.
Definition: time.c:135
void GNUNET_CONTAINER_multihashmap_destroy(struct GNUNET_CONTAINER_MultiHashMap *map)
Destroy a hash map.
GNUNET_MESSENGER_MessageCallback msg_callback
static struct GNUNET_IDENTITY_PublicKey pubkey
Public key of the zone to look in.
int GNUNET_CONTAINER_multihashmap_remove(struct GNUNET_CONTAINER_MultiHashMap *map, const struct GNUNET_HashCode *key, const void *value)
Remove the given key-value pair from the map.
static struct GNUNET_DNS_Handle * handle
Handle to transport service.
struct GNUNET_CONTAINER_MultiHashMap * rooms
void open_handle_room(struct GNUNET_MESSENGER_Handle *handle, const struct GNUNET_HashCode *key)
Marks a room known to a handle identified by a given key as open.
A 512-bit hashcode.
messenger api: client implementation of GNUnet MESSENGER service
struct GNUNET_TIME_Relative reconnect_time
struct GNUNET_HashCode key
The key used in the DHT.
void(* GNUNET_MESSENGER_IdentityCallback)(void *cls, struct GNUNET_MESSENGER_Handle *handle)
Method called whenever the EGO of a handle changes or if the first connection fails to load a valid E...
void destroy_handle(struct GNUNET_MESSENGER_Handle *handle)
Destroys a handle and frees its memory fully from the client API.
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.
const struct GNUNET_CONFIGURATION_Handle * cfg
const struct GNUNET_HashCode * get_contact_id_from_key(const struct GNUNET_MESSENGER_SrvContact *contact)
Returns the resulting hashcode of the public key from a given contact.
struct GNUNET_IDENTITY_Ego * GNUNET_IDENTITY_ego_get_anonymous()
Obtain the ego representing &#39;anonymous&#39; users.
Definition: identity_api.c:156
The identity of the host (wraps the signing key of the peer).
void swap_handle_contact_by_pubkey(struct GNUNET_MESSENGER_Handle *handle, struct GNUNET_MESSENGER_Contact *contact, const struct GNUNET_IDENTITY_PublicKey *pubkey)
Changes the public key for a contact known to a handle to a specific public key and updates local map...
An identity key as per LSD0001.
configuration data
Definition: configuration.c:84
const char * name
struct GNUNET_CONTAINER_MultiHashMap * GNUNET_CONTAINER_multihashmap_create(unsigned int len, int do_not_copy_keys)
Create a multi hash map.
void set_handle_key(struct GNUNET_MESSENGER_Handle *handle, const struct GNUNET_IDENTITY_PublicKey *pubkey)
Sets the public key of a given handle to a specific public key.
struct GNUNET_IDENTITY_PublicKey * pubkey
struct GNUNET_MESSENGER_Contact * get_handle_contact_by_pubkey(const struct GNUNET_MESSENGER_Handle *handle, const struct GNUNET_IDENTITY_PublicKey *pubkey)
Returns a contact known to a handle identified by a given public key.
void GNUNET_MQ_destroy(struct GNUNET_MQ_Handle *mq)
Destroy the message queue.
Definition: mq.c:837
static int iterate_destroy_room(void *cls, const struct GNUNET_HashCode *key, void *value)
struct GNUNET_MESSENGER_Handle * create_handle(const struct GNUNET_CONFIGURATION_Handle *cfg, GNUNET_MESSENGER_IdentityCallback identity_callback, void *identity_cls, GNUNET_MESSENGER_MessageCallback msg_callback, void *msg_cls)
Creates and allocates a new handle using a given configuration and a custom message callback with a g...
GNUNET_MESSENGER_IdentityCallback identity_callback
int GNUNET_CONTAINER_multihashmap_iterate(struct GNUNET_CONTAINER_MultiHashMap *map, GNUNET_CONTAINER_MulitHashMapIteratorCallback it, void *it_cls)
Iterate over all entries in the map.
void set_handle_name(struct GNUNET_MESSENGER_Handle *handle, const char *name)
Sets the name of a handle to a specific name.
#define GNUNET_free(ptr)
Wrapper around free.
static int iterate_destroy_contact(void *cls, const struct GNUNET_HashCode *key, void *value)
void * GNUNET_SCHEDULER_cancel(struct GNUNET_SCHEDULER_Task *task)
Cancel the task with the specified identifier.
Definition: scheduler.c:972