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Diffstat (limited to 'src/cadet/cadet_api_list_tunnels.c')
-rw-r--r-- | src/cadet/cadet_api_list_tunnels.c | 239 |
1 files changed, 0 insertions, 239 deletions
diff --git a/src/cadet/cadet_api_list_tunnels.c b/src/cadet/cadet_api_list_tunnels.c deleted file mode 100644 index e9ae069bb..000000000 --- a/src/cadet/cadet_api_list_tunnels.c +++ /dev/null | |||
@@ -1,239 +0,0 @@ | |||
1 | /* | ||
2 | This file is part of GNUnet. | ||
3 | Copyright (C) 2011, 2017, 2019 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 | */ | ||
20 | /** | ||
21 | * @file cadet/cadet_api_list_tunnels.c | ||
22 | * @brief cadet api: client implementation of cadet service | ||
23 | * @author Bartlomiej Polot | ||
24 | * @author Christian Grothoff | ||
25 | */ | ||
26 | #include "platform.h" | ||
27 | #include "gnunet_util_lib.h" | ||
28 | #include "gnunet_constants.h" | ||
29 | #include "gnunet_cadet_service.h" | ||
30 | #include "cadet.h" | ||
31 | #include "cadet_protocol.h" | ||
32 | |||
33 | |||
34 | /** | ||
35 | * Operation handle. | ||
36 | */ | ||
37 | struct GNUNET_CADET_ListTunnels | ||
38 | { | ||
39 | /** | ||
40 | * Monitor callback | ||
41 | */ | ||
42 | GNUNET_CADET_TunnelsCB tunnels_cb; | ||
43 | |||
44 | /** | ||
45 | * Info callback closure for @c tunnels_cb. | ||
46 | */ | ||
47 | void *tunnels_cb_cls; | ||
48 | |||
49 | /** | ||
50 | * Message queue to talk to CADET service. | ||
51 | */ | ||
52 | struct GNUNET_MQ_Handle *mq; | ||
53 | |||
54 | /** | ||
55 | * Configuration we use. | ||
56 | */ | ||
57 | const struct GNUNET_CONFIGURATION_Handle *cfg; | ||
58 | |||
59 | /** | ||
60 | * Task to reconnect. | ||
61 | */ | ||
62 | struct GNUNET_SCHEDULER_Task *reconnect_task; | ||
63 | |||
64 | /** | ||
65 | * Backoff for reconnect attempts. | ||
66 | */ | ||
67 | struct GNUNET_TIME_Relative backoff; | ||
68 | }; | ||
69 | |||
70 | |||
71 | /** | ||
72 | * Process a local reply about info on all tunnels, pass info to the user. | ||
73 | * | ||
74 | * @param cls a `struct GNUNET_CADET_ListTunnels *` | ||
75 | * @param info Message itself. | ||
76 | */ | ||
77 | static void | ||
78 | handle_get_tunnels (void *cls, | ||
79 | const struct GNUNET_CADET_LocalInfoTunnel *info) | ||
80 | { | ||
81 | struct GNUNET_CADET_ListTunnels *lt = cls; | ||
82 | struct GNUNET_CADET_TunnelDetails td; | ||
83 | |||
84 | td.peer = info->destination; | ||
85 | td.channels = ntohl (info->channels); | ||
86 | td.connections = ntohl (info->connections); | ||
87 | td.estate = ntohs (info->estate); | ||
88 | td.cstate = ntohs (info->cstate); | ||
89 | lt->tunnels_cb (lt->tunnels_cb_cls, | ||
90 | &td); | ||
91 | } | ||
92 | |||
93 | |||
94 | /** | ||
95 | * Process a local reply about info on all tunnels, pass info to the user. | ||
96 | * | ||
97 | * @param cls a `struct GNUNET_CADET_ListTunnels *` | ||
98 | * @param message Message itself. | ||
99 | */ | ||
100 | static void | ||
101 | handle_get_tunnels_end (void *cls, | ||
102 | const struct GNUNET_MessageHeader *msg) | ||
103 | { | ||
104 | struct GNUNET_CADET_ListTunnels *lt = cls; | ||
105 | |||
106 | (void) msg; | ||
107 | |||
108 | lt->tunnels_cb (lt->tunnels_cb_cls, | ||
109 | NULL); | ||
110 | GNUNET_CADET_list_tunnels_cancel (lt); | ||
111 | } | ||
112 | |||
113 | |||
114 | /** | ||
115 | * Reconnect to the service and try again. | ||
116 | * | ||
117 | * @param cls a `struct GNUNET_CADET_ListTunnels` operation | ||
118 | */ | ||
119 | static void | ||
120 | reconnect (void *cls); | ||
121 | |||
122 | |||
123 | /** | ||
124 | * Function called on connection trouble. Reconnects. | ||
125 | * | ||
126 | * @param cls a `struct GNUNET_CADET_ListTunnels` | ||
127 | * @param error error code from MQ | ||
128 | */ | ||
129 | static void | ||
130 | error_handler (void *cls, | ||
131 | enum GNUNET_MQ_Error error) | ||
132 | { | ||
133 | struct GNUNET_CADET_ListTunnels *lt = cls; | ||
134 | |||
135 | GNUNET_MQ_destroy (lt->mq); | ||
136 | lt->mq = NULL; | ||
137 | lt->backoff = GNUNET_TIME_randomized_backoff (lt->backoff, | ||
138 | GNUNET_TIME_UNIT_MINUTES); | ||
139 | lt->reconnect_task = GNUNET_SCHEDULER_add_delayed (lt->backoff, | ||
140 | &reconnect, | ||
141 | lt); | ||
142 | } | ||
143 | |||
144 | |||
145 | /** | ||
146 | * Reconnect to the service and try again. | ||
147 | * | ||
148 | * @param cls a `struct GNUNET_CADET_ListTunnels` operation | ||
149 | */ | ||
150 | static void | ||
151 | reconnect (void *cls) | ||
152 | { | ||
153 | struct GNUNET_CADET_ListTunnels *lt = cls; | ||
154 | struct GNUNET_MQ_MessageHandler handlers[] = { | ||
155 | GNUNET_MQ_hd_fixed_size (get_tunnels, | ||
156 | GNUNET_MESSAGE_TYPE_CADET_LOCAL_INFO_TUNNELS, | ||
157 | struct GNUNET_CADET_LocalInfoTunnel, | ||
158 | lt), | ||
159 | GNUNET_MQ_hd_fixed_size (get_tunnels_end, | ||
160 | GNUNET_MESSAGE_TYPE_CADET_LOCAL_INFO_TUNNELS_END, | ||
161 | struct GNUNET_MessageHeader, | ||
162 | lt), | ||
163 | GNUNET_MQ_handler_end () | ||
164 | }; | ||
165 | struct GNUNET_MessageHeader *msg; | ||
166 | struct GNUNET_MQ_Envelope *env; | ||
167 | |||
168 | lt->reconnect_task = NULL; | ||
169 | lt->mq = GNUNET_CLIENT_connect (lt->cfg, | ||
170 | "cadet", | ||
171 | handlers, | ||
172 | &error_handler, | ||
173 | lt); | ||
174 | if (NULL == lt->mq) | ||
175 | return; | ||
176 | env = GNUNET_MQ_msg (msg, | ||
177 | GNUNET_MESSAGE_TYPE_CADET_LOCAL_REQUEST_INFO_TUNNELS); | ||
178 | GNUNET_MQ_send (lt->mq, | ||
179 | env); | ||
180 | } | ||
181 | |||
182 | |||
183 | /** | ||
184 | * Request information about tunnels of the running cadet peer. | ||
185 | * The callback will be called for every tunnel of the service. | ||
186 | * Only one info request (of any kind) can be active at once. | ||
187 | * | ||
188 | * @param cfg configuration to use | ||
189 | * @param callback Function to call with the requested data. | ||
190 | * @param callback_cls Closure for @c callback. | ||
191 | * @return NULL on error | ||
192 | */ | ||
193 | struct GNUNET_CADET_ListTunnels * | ||
194 | GNUNET_CADET_list_tunnels (const struct GNUNET_CONFIGURATION_Handle *cfg, | ||
195 | GNUNET_CADET_TunnelsCB callback, | ||
196 | void *callback_cls) | ||
197 | { | ||
198 | struct GNUNET_CADET_ListTunnels *lt; | ||
199 | |||
200 | if (NULL == callback) | ||
201 | { | ||
202 | GNUNET_break (0); | ||
203 | return NULL; | ||
204 | } | ||
205 | lt = GNUNET_new (struct GNUNET_CADET_ListTunnels); | ||
206 | lt->tunnels_cb = callback; | ||
207 | lt->tunnels_cb_cls = callback_cls; | ||
208 | lt->cfg = cfg; | ||
209 | reconnect (lt); | ||
210 | if (NULL == lt->mq) | ||
211 | { | ||
212 | GNUNET_free (lt); | ||
213 | return NULL; | ||
214 | } | ||
215 | return lt; | ||
216 | } | ||
217 | |||
218 | |||
219 | /** | ||
220 | * Cancel a monitor request. The monitor callback will not be called. | ||
221 | * | ||
222 | * @param lt operation handle | ||
223 | * @return Closure given to GNUNET_CADET_list_tunnels(). | ||
224 | */ | ||
225 | void * | ||
226 | GNUNET_CADET_list_tunnels_cancel (struct GNUNET_CADET_ListTunnels *lt) | ||
227 | { | ||
228 | void *ret = lt->tunnels_cb_cls; | ||
229 | |||
230 | if (NULL != lt->mq) | ||
231 | GNUNET_MQ_destroy (lt->mq); | ||
232 | if (NULL != lt->reconnect_task) | ||
233 | GNUNET_SCHEDULER_cancel (lt->reconnect_task); | ||
234 | GNUNET_free (lt); | ||
235 | return ret; | ||
236 | } | ||
237 | |||
238 | |||
239 | /* end of cadet_api_list_tunnels.c */ | ||