GNUnet  0.11.x
messenger_api_util.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_util.h"
27 
28 static void
30 {
31  struct GNUNET_CADET_Channel *channel = cls;
32 
33  if (channel)
35 }
36 
37 void
39 {
40  GNUNET_assert(channel);
41 
44  callback_close_channel, channel);
45 }
46 
47 int
49  const struct GNUNET_CONTAINER_MultiShortmap *members)
50 {
51  GNUNET_assert(id);
52 
53  size_t counter = 1 + (members ? GNUNET_CONTAINER_multishortmap_size (members) : 0);
54 
55  do
56  {
58 
59  if ((members) && (GNUNET_YES == GNUNET_CONTAINER_multishortmap_contains (members, id)))
60  counter--;
61  else
62  break;
63  }
64  while (counter > 0);
65 
66  if (counter)
67  return GNUNET_YES;
68 
69  return GNUNET_NO;
70 }
71 
72 const struct GNUNET_IDENTITY_PublicKey*
74 {
75  static struct GNUNET_IDENTITY_PublicKey public_key;
76  static struct GNUNET_IDENTITY_Ego* ego = NULL;
77 
78  if (!ego)
79  {
81  GNUNET_IDENTITY_ego_get_public_key(ego, &public_key);
82  }
83 
84  return &public_key;
85 }
86 
87 void
89  struct GNUNET_HashCode *port)
90 {
91  static uint32_t version_value = 0;
92  static struct GNUNET_HashCode version;
93 
94  if (!version_value) {
95  version_value = (uint32_t) (GNUNET_MESSENGER_VERSION);
96  version_value = ((version_value >> 16) & 0xFFFF);
97  version_value = GNUNET_htole32(version_value);
98  GNUNET_CRYPTO_hash(&version_value, sizeof(version_value), &version);
99  }
100 
101  GNUNET_CRYPTO_hash_sum(key, &version, port);
102 }
static uint16_t port
Port number.
Definition: gnunet-bcd.c:83
struct GNUNET_HashCode key
The key used in the DHT.
#define GNUNET_htole32(x)
@ GNUNET_SCHEDULER_PRIORITY_URGENT
Run with priority for urgent tasks.
@ GNUNET_YES
Definition: gnunet_common.h:97
@ GNUNET_NO
Definition: gnunet_common.h:94
void GNUNET_CADET_channel_destroy(struct GNUNET_CADET_Channel *channel)
Destroy an existing channel.
Definition: cadet_api.c:837
void GNUNET_CRYPTO_random_block(enum GNUNET_CRYPTO_Quality mode, void *buffer, size_t length)
Fill block with a random values.
@ GNUNET_CRYPTO_QUALITY_STRONG
High-quality operations are desired.
void GNUNET_CRYPTO_hash(const void *block, size_t size, struct GNUNET_HashCode *ret)
Compute hash of a given block.
Definition: crypto_hash.c:41
void GNUNET_CRYPTO_hash_sum(const struct GNUNET_HashCode *a, const struct GNUNET_HashCode *delta, struct GNUNET_HashCode *result)
compute result = a + delta
Definition: crypto_hash.c:122
unsigned int GNUNET_CONTAINER_multishortmap_size(const struct GNUNET_CONTAINER_MultiShortmap *map)
Get the number of key-value pairs in the map.
int GNUNET_CONTAINER_multishortmap_contains(const struct GNUNET_CONTAINER_MultiShortmap *map, const struct GNUNET_ShortHashCode *key)
Check if the map contains any value under the given key (including values that are NULL).
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
struct GNUNET_IDENTITY_Ego * GNUNET_IDENTITY_ego_get_anonymous()
Obtain the ego representing 'anonymous' users.
Definition: identity_api.c:156
#define GNUNET_assert(cond)
Use this for fatal errors that cannot be handled.
#define GNUNET_MESSENGER_VERSION
Version number of GNUnet Messenger API.
struct GNUNET_SCHEDULER_Task * GNUNET_SCHEDULER_add_delayed_with_priority(struct GNUNET_TIME_Relative delay, enum GNUNET_SCHEDULER_Priority priority, GNUNET_SCHEDULER_TaskCallback task, void *task_cls)
Schedule a new task to be run with a specified delay.
Definition: scheduler.c:1199
struct GNUNET_TIME_Relative GNUNET_TIME_relative_get_zero_(void)
Return relative time of 0ms.
Definition: time.c:100
const struct GNUNET_IDENTITY_PublicKey * get_anonymous_public_key()
Returns the public identity key of GNUNET_IDENTITY_ego_get_anonymous() without recalculating it every...
static void callback_close_channel(void *cls)
void convert_messenger_key_to_port(const struct GNUNET_HashCode *key, struct GNUNET_HashCode *port)
Converts a Messenger service key of a room to the specific port which gets used for the CADET channel...
int generate_free_member_id(struct GNUNET_ShortHashCode *id, const struct GNUNET_CONTAINER_MultiShortmap *members)
Tries to generate an unused member id and store it into the id parameter.
void delayed_disconnect_channel(struct GNUNET_CADET_Channel *channel)
Starts an urgent task to close a CADET channel asynchronously.
messenger api: client implementation of GNUnet MESSENGER service
Opaque handle to a channel.
Definition: cadet.h:117
Internal representation of the hash map.
A 512-bit hashcode.
Handle for an ego.
Definition: identity.h:37
An identity key as per LSD0001.
A 256-bit hashcode.