GNUnet  0.11.x
messenger_api_handle.c
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1 /*
2  This file is part of GNUnet.
3  Copyright (C) 2020--2021 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 
28 #include "messenger_api_util.h"
29 
33 {
34  GNUNET_assert(cfg);
35 
37 
38  handle->cfg = cfg;
39  handle->mq = NULL;
40 
42  handle->identity_cls = identity_cls;
43 
44  handle->msg_callback = msg_callback;
45  handle->msg_cls = msg_cls;
46 
47  handle->name = NULL;
48  handle->pubkey = NULL;
49 
51  handle->reconnect_task = NULL;
52 
54 
56 
57  return handle;
58 }
59 
60 static int
61 iterate_destroy_room (void *cls, const struct GNUNET_HashCode *key, void *value)
62 {
63  struct GNUNET_MESSENGER_Room *room = value;
64 
65  destroy_room (room);
66 
67  return GNUNET_YES;
68 }
69 
70 void
72 {
73  GNUNET_assert(handle);
74 
75  if (handle->reconnect_task)
77 
78  if (handle->mq)
79  GNUNET_MQ_destroy (handle->mq);
80 
81  if (handle->name)
82  GNUNET_free(handle->name);
83 
84  if (handle->pubkey)
85  GNUNET_free(handle->pubkey);
86 
87  if (handle->rooms)
88  {
90 
92  }
93 
95 
96  GNUNET_free(handle->name);
97 }
98 
99 void
101 {
102  GNUNET_assert(handle);
103 
104  if (handle->name)
105  GNUNET_free(handle->name);
106 
107  handle->name = name ? GNUNET_strdup(name) : NULL;
108 }
109 
110 const char*
112 {
113  GNUNET_assert(handle);
114 
115  return handle->name;
116 }
117 
118 void
120 {
121  GNUNET_assert(handle);
122 
123  if (!handle->pubkey)
124  handle->pubkey = GNUNET_new(struct GNUNET_IDENTITY_PublicKey);
125 
126  GNUNET_memcpy(handle->pubkey, pubkey, sizeof(*pubkey));
127 }
128 
129 const struct GNUNET_IDENTITY_PublicKey*
131 {
132  GNUNET_assert(handle);
133 
134  if (handle->pubkey)
135  return handle->pubkey;
136 
137  return get_anonymous_public_key ();
138 }
139 
142 {
143  GNUNET_assert(handle);
144 
145  return &(handle->contact_store);
146 }
147 
150 {
151  GNUNET_assert((handle) && (key));
152 
153  struct GNUNET_MESSENGER_Room *room = GNUNET_CONTAINER_multihashmap_get (handle->rooms, key);
154 
155  if ((!room) || (!(room->contact_id)))
156  return NULL;
157 
158  struct GNUNET_HashCode context;
159  get_context_from_member (key, room->contact_id, &context);
160 
161  return get_store_contact(get_handle_contact_store(handle), &context, get_handle_key(handle));
162 }
163 
164 void
166 {
167  GNUNET_assert((handle) && (key));
168 
169  struct GNUNET_MESSENGER_Room *room = GNUNET_CONTAINER_multihashmap_get (handle->rooms, key);
170 
171  if (room)
172  room->opened = GNUNET_YES;
173 }
174 
175 void
177  const struct GNUNET_HashCode *key)
178 {
179  GNUNET_assert((handle) && (door) && (key));
180 
181  struct GNUNET_MESSENGER_Room *room = GNUNET_CONTAINER_multihashmap_get (handle->rooms, key);
182 
183  if (room)
184  add_to_list_tunnels (&(room->entries), door);
185 }
186 
187 void
189 {
190  GNUNET_assert((handle) && (key));
191 
192  struct GNUNET_MESSENGER_Room *room = GNUNET_CONTAINER_multihashmap_get (handle->rooms, key);
193 
194  if ((room) && (GNUNET_YES == GNUNET_CONTAINER_multihashmap_remove (handle->rooms, key, room)))
195  destroy_room (room);
196 }
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...
void get_context_from_member(const struct GNUNET_HashCode *key, const struct GNUNET_ShortHashCode *id, struct GNUNET_HashCode *context)
Calculates the context hash of a member in a room and returns it.
void init_contact_store(struct GNUNET_MESSENGER_ContactStore *store)
Initializes a contact store as fully empty.
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_room(struct GNUNET_MESSENGER_SrvRoom *room)
Destroys a room and frees its memory fully.
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
#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.
#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.
struct GNUNET_ShortHashCode * contact_id
static char * value
Value of the record to add/remove.
struct GNUNET_TIME_Relative GNUNET_TIME_relative_get_zero_(void)
Return relative time of 0ms.
Definition: time.c:100
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
messenger api: client implementation of GNUnet MESSENGER service
struct GNUNET_MESSENGER_Contact * get_store_contact(struct GNUNET_MESSENGER_ContactStore *store, const struct GNUNET_HashCode *context, const struct GNUNET_IDENTITY_PublicKey *pubkey)
Returns a contact using a specific public key.
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.
const struct GNUNET_CONFIGURATION_Handle * cfg
void(* GNUNET_MESSENGER_MessageCallback)(void *cls, struct GNUNET_MESSENGER_Room *room, const struct GNUNET_MESSENGER_Contact *sender, const struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash, enum GNUNET_MESSENGER_MessageFlags flags)
Method called whenever a message is sent or received from a room.
struct GNUNET_MESSENGER_Contact * get_handle_contact(struct GNUNET_MESSENGER_Handle *handle, const struct GNUNET_HashCode *key)
Returns the contact of a given handle in a room identified by a given key.
struct GNUNET_MESSENGER_ContactStore * get_handle_contact_store(struct GNUNET_MESSENGER_Handle *handle)
Returns the used contact store of a given handle.
The identity of the host (wraps the signing key of the peer).
An identity key as per LSD0001.
configuration data
const char * name
struct GNUNET_MESSENGER_ContactStore contact_store
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
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)
void clear_contact_store(struct GNUNET_MESSENGER_ContactStore *store)
Clears a contact store, wipes its content and deallocates its memory.
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.
const struct GNUNET_IDENTITY_PublicKey * get_anonymous_public_key()
Returns the public identity key of GNUNET_IDENTITY_ego_get_anonymous() without recalculating it every...
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.
void * GNUNET_SCHEDULER_cancel(struct GNUNET_SCHEDULER_Task *task)
Cancel the task with the specified identifier.
Definition: scheduler.c:972