diff options
Diffstat (limited to 'src/transport')
-rw-r--r-- | src/transport/.gitignore | 1 | ||||
-rw-r--r-- | src/transport/Makefile.am | 21 | ||||
-rw-r--r-- | src/transport/gnunet-communicator-unix.c | 1148 | ||||
-rw-r--r-- | src/transport/gnunet-service-tng.c | 719 | ||||
-rw-r--r-- | src/transport/transport.h | 63 | ||||
-rw-r--r-- | src/transport/transport_api2_communication.c | 194 |
6 files changed, 2062 insertions, 84 deletions
diff --git a/src/transport/.gitignore b/src/transport/.gitignore index d035b4011..90f908a47 100644 --- a/src/transport/.gitignore +++ b/src/transport/.gitignore | |||
@@ -83,3 +83,4 @@ test_transport_blacklisting_outbound_bl_full | |||
83 | test_transport_blacklisting_outbound_bl_plugin | 83 | test_transport_blacklisting_outbound_bl_plugin |
84 | test_transport_testing_restart | 84 | test_transport_testing_restart |
85 | test_transport_testing_startstop | 85 | test_transport_testing_startstop |
86 | gnunet-communicator-unix | ||
diff --git a/src/transport/Makefile.am b/src/transport/Makefile.am index d0db6b141..92b53137f 100644 --- a/src/transport/Makefile.am +++ b/src/transport/Makefile.am | |||
@@ -140,6 +140,7 @@ endif | |||
140 | 140 | ||
141 | noinst_PROGRAMS = \ | 141 | noinst_PROGRAMS = \ |
142 | gnunet-transport-profiler \ | 142 | gnunet-transport-profiler \ |
143 | gnunet-communicator-unix \ | ||
143 | $(WLAN_BIN_SENDER) \ | 144 | $(WLAN_BIN_SENDER) \ |
144 | $(WLAN_BIN_RECEIVER) | 145 | $(WLAN_BIN_RECEIVER) |
145 | 146 | ||
@@ -149,6 +150,7 @@ endif | |||
149 | 150 | ||
150 | lib_LTLIBRARIES = \ | 151 | lib_LTLIBRARIES = \ |
151 | libgnunettransport.la \ | 152 | libgnunettransport.la \ |
153 | libgnunettransportcommunicator.la \ | ||
152 | $(TESTING_LIBS) | 154 | $(TESTING_LIBS) |
153 | 155 | ||
154 | libgnunettransporttesting_la_SOURCES = \ | 156 | libgnunettransporttesting_la_SOURCES = \ |
@@ -187,6 +189,17 @@ libgnunettransport_la_LDFLAGS = \ | |||
187 | $(GN_LIB_LDFLAGS) $(WINFLAGS) \ | 189 | $(GN_LIB_LDFLAGS) $(WINFLAGS) \ |
188 | -version-info 4:0:2 | 190 | -version-info 4:0:2 |
189 | 191 | ||
192 | |||
193 | |||
194 | libgnunettransportcommunicator_la_SOURCES = \ | ||
195 | transport_api2_communication.c | ||
196 | libgnunettransportcommunicator_la_LIBADD = \ | ||
197 | $(top_builddir)/src/util/libgnunetutil.la \ | ||
198 | $(GN_LIBINTL) | ||
199 | libgnunettransportcommunicator_la_LDFLAGS = \ | ||
200 | $(GN_LIB_LDFLAGS) $(WINFLAGS) \ | ||
201 | -version-info 0:0:0 | ||
202 | |||
190 | libexec_PROGRAMS = \ | 203 | libexec_PROGRAMS = \ |
191 | $(WLAN_BIN) \ | 204 | $(WLAN_BIN) \ |
192 | $(WLAN_BIN_DUMMY) \ | 205 | $(WLAN_BIN_DUMMY) \ |
@@ -207,6 +220,14 @@ gnunet_transport_certificate_creation_SOURCES = \ | |||
207 | gnunet_transport_certificate_creation_LDADD = \ | 220 | gnunet_transport_certificate_creation_LDADD = \ |
208 | $(top_builddir)/src/util/libgnunetutil.la | 221 | $(top_builddir)/src/util/libgnunetutil.la |
209 | 222 | ||
223 | gnunet_communicator_unix_SOURCES = \ | ||
224 | gnunet-communicator-unix.c | ||
225 | gnunet_communicator_unix_LDADD = \ | ||
226 | libgnunettransportcommunicator.la \ | ||
227 | $(top_builddir)/src/statistics/libgnunetstatistics.la \ | ||
228 | $(top_builddir)/src/util/libgnunetutil.la | ||
229 | |||
230 | |||
210 | gnunet_helper_transport_wlan_SOURCES = \ | 231 | gnunet_helper_transport_wlan_SOURCES = \ |
211 | gnunet-helper-transport-wlan.c | 232 | gnunet-helper-transport-wlan.c |
212 | 233 | ||
diff --git a/src/transport/gnunet-communicator-unix.c b/src/transport/gnunet-communicator-unix.c new file mode 100644 index 000000000..cd3ae5dce --- /dev/null +++ b/src/transport/gnunet-communicator-unix.c | |||
@@ -0,0 +1,1148 @@ | |||
1 | /* | ||
2 | This file is part of GNUnet | ||
3 | Copyright (C) 2010-2014, 2018 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 | |||
19 | /** | ||
20 | * @file transport/gnunet-communicator-unix.c | ||
21 | * @brief Transport plugin using unix domain sockets (!) | ||
22 | * Clearly, can only be used locally on Unix/Linux hosts... | ||
23 | * ONLY INTENDED FOR TESTING!!! | ||
24 | * @author Christian Grothoff | ||
25 | * @author Nathan Evans | ||
26 | */ | ||
27 | #include "platform.h" | ||
28 | #include "gnunet_util_lib.h" | ||
29 | #include "gnunet_protocols.h" | ||
30 | #include "gnunet_statistics_service.h" | ||
31 | #include "gnunet_transport_communication_service.h" | ||
32 | |||
33 | /** | ||
34 | * How many messages do we keep at most in the queue to the | ||
35 | * transport service before we start to drop (default, | ||
36 | * can be changed via the configuration file). | ||
37 | * Should be _below_ the level of the communicator API, as | ||
38 | * otherwise we may read messages just to have them dropped | ||
39 | * by the communicator API. | ||
40 | */ | ||
41 | #define DEFAULT_MAX_QUEUE_LENGTH 8 | ||
42 | |||
43 | /** | ||
44 | * Address prefix used by the communicator. | ||
45 | */ | ||
46 | #define COMMUNICATOR_ADDRESS_PREFIX "unix" | ||
47 | |||
48 | /** | ||
49 | * Configuration section used by the communicator. | ||
50 | */ | ||
51 | #define COMMUNICATOR_CONFIG_SECTION "communicator-unix" | ||
52 | |||
53 | |||
54 | GNUNET_NETWORK_STRUCT_BEGIN | ||
55 | |||
56 | /** | ||
57 | * UNIX Message-Packet header. | ||
58 | */ | ||
59 | struct UNIXMessage | ||
60 | { | ||
61 | /** | ||
62 | * Message header. | ||
63 | */ | ||
64 | struct GNUNET_MessageHeader header; | ||
65 | |||
66 | /** | ||
67 | * What is the identity of the sender (GNUNET_hash of public key) | ||
68 | */ | ||
69 | struct GNUNET_PeerIdentity sender; | ||
70 | |||
71 | }; | ||
72 | |||
73 | GNUNET_NETWORK_STRUCT_END | ||
74 | |||
75 | |||
76 | /** | ||
77 | * Handle for a queue. | ||
78 | */ | ||
79 | struct Queue | ||
80 | { | ||
81 | |||
82 | /** | ||
83 | * Queues with pending messages (!) are kept in a DLL. | ||
84 | */ | ||
85 | struct Queue *next; | ||
86 | |||
87 | /** | ||
88 | * Queues with pending messages (!) are kept in a DLL. | ||
89 | */ | ||
90 | struct Queue *prev; | ||
91 | |||
92 | /** | ||
93 | * To whom are we talking to. | ||
94 | */ | ||
95 | struct GNUNET_PeerIdentity target; | ||
96 | |||
97 | /** | ||
98 | * Address of the other peer. | ||
99 | */ | ||
100 | struct sockaddr_un *address; | ||
101 | |||
102 | /** | ||
103 | * Length of the address. | ||
104 | */ | ||
105 | socklen_t address_len; | ||
106 | |||
107 | /** | ||
108 | * Message currently scheduled for transmission, non-NULL if and only | ||
109 | * if this queue is in the #queue_head DLL. | ||
110 | */ | ||
111 | const struct GNUNET_MessageHeader *msg; | ||
112 | |||
113 | /** | ||
114 | * Message queue we are providing for the #ch. | ||
115 | */ | ||
116 | struct GNUNET_MQ_Handle *mq; | ||
117 | |||
118 | /** | ||
119 | * handle for this queue with the #ch. | ||
120 | */ | ||
121 | struct GNUNET_TRANSPORT_QueueHandle *qh; | ||
122 | |||
123 | /** | ||
124 | * Number of bytes we currently have in our write queue. | ||
125 | */ | ||
126 | unsigned long long bytes_in_queue; | ||
127 | |||
128 | /** | ||
129 | * Timeout for this queue. | ||
130 | */ | ||
131 | struct GNUNET_TIME_Absolute timeout; | ||
132 | |||
133 | /** | ||
134 | * Queue timeout task. | ||
135 | */ | ||
136 | struct GNUNET_SCHEDULER_Task *timeout_task; | ||
137 | |||
138 | }; | ||
139 | |||
140 | |||
141 | /** | ||
142 | * ID of read task | ||
143 | */ | ||
144 | static struct GNUNET_SCHEDULER_Task *read_task; | ||
145 | |||
146 | /** | ||
147 | * ID of write task | ||
148 | */ | ||
149 | static struct GNUNET_SCHEDULER_Task *write_task; | ||
150 | |||
151 | /** | ||
152 | * Number of messages we currently have in our queues towards the transport service. | ||
153 | */ | ||
154 | static unsigned long long delivering_messages; | ||
155 | |||
156 | /** | ||
157 | * Maximum queue length before we stop reading towards the transport service. | ||
158 | */ | ||
159 | static unsigned long long max_queue_length; | ||
160 | |||
161 | /** | ||
162 | * For logging statistics. | ||
163 | */ | ||
164 | static struct GNUNET_STATISTICS_Handle *stats; | ||
165 | |||
166 | /** | ||
167 | * Our environment. | ||
168 | */ | ||
169 | static struct GNUNET_TRANSPORT_CommunicatorHandle *ch; | ||
170 | |||
171 | /** | ||
172 | * Queues (map from peer identity to `struct Queue`) | ||
173 | */ | ||
174 | static struct GNUNET_CONTAINER_MultiPeerMap *queue_map; | ||
175 | |||
176 | /** | ||
177 | * Head of queue of messages to transmit. | ||
178 | */ | ||
179 | static struct Queue *queue_head; | ||
180 | |||
181 | /** | ||
182 | * Tail of queue of messages to transmit. | ||
183 | */ | ||
184 | static struct Queue *queue_tail; | ||
185 | |||
186 | /** | ||
187 | * socket that we transmit all data with | ||
188 | */ | ||
189 | static struct GNUNET_NETWORK_Handle *unix_sock; | ||
190 | |||
191 | /** | ||
192 | * Handle to the operation that publishes our address. | ||
193 | */ | ||
194 | static struct GNUNET_TRANSPORT_AddressIdentifier *ai; | ||
195 | |||
196 | |||
197 | /** | ||
198 | * Functions with this signature are called whenever we need | ||
199 | * to close a queue due to a disconnect or failure to | ||
200 | * establish a connection. | ||
201 | * | ||
202 | * @param queue queue to close down | ||
203 | */ | ||
204 | static void | ||
205 | queue_destroy (struct Queue *queue) | ||
206 | { | ||
207 | struct GNUNET_MQ_Handle *mq; | ||
208 | |||
209 | GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, | ||
210 | "Disconnecting queue for peer `%s'\n", | ||
211 | GNUNET_i2s (&queue->target)); | ||
212 | if (0 != queue->bytes_in_queue) | ||
213 | { | ||
214 | GNUNET_CONTAINER_DLL_remove (queue_head, | ||
215 | queue_tail, | ||
216 | queue); | ||
217 | queue->bytes_in_queue = 0; | ||
218 | } | ||
219 | if (NULL != (mq = queue->mq)) | ||
220 | { | ||
221 | queue->mq = NULL; | ||
222 | GNUNET_MQ_destroy (mq); | ||
223 | } | ||
224 | GNUNET_assert (GNUNET_YES == | ||
225 | GNUNET_CONTAINER_multipeermap_remove (queue_map, | ||
226 | &queue->target, | ||
227 | queue)); | ||
228 | GNUNET_STATISTICS_set (stats, | ||
229 | "# UNIX queues active", | ||
230 | GNUNET_CONTAINER_multipeermap_size (queue_map), | ||
231 | GNUNET_NO); | ||
232 | if (NULL != queue->timeout_task) | ||
233 | { | ||
234 | GNUNET_SCHEDULER_cancel (queue->timeout_task); | ||
235 | queue->timeout_task = NULL; | ||
236 | } | ||
237 | GNUNET_free (queue->address); | ||
238 | GNUNET_free (queue); | ||
239 | } | ||
240 | |||
241 | |||
242 | /** | ||
243 | * Queue was idle for too long, so disconnect it | ||
244 | * | ||
245 | * @param cls the `struct Queue *` to disconnect | ||
246 | */ | ||
247 | static void | ||
248 | queue_timeout (void *cls) | ||
249 | { | ||
250 | struct Queue *queue = cls; | ||
251 | struct GNUNET_TIME_Relative left; | ||
252 | |||
253 | queue->timeout_task = NULL; | ||
254 | left = GNUNET_TIME_absolute_get_remaining (queue->timeout); | ||
255 | if (0 != left.rel_value_us) | ||
256 | { | ||
257 | /* not actually our turn yet, but let's at least update | ||
258 | the monitor, it may think we're about to die ... */ | ||
259 | queue->timeout_task | ||
260 | = GNUNET_SCHEDULER_add_delayed (left, | ||
261 | &queue_timeout, | ||
262 | queue); | ||
263 | return; | ||
264 | } | ||
265 | GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, | ||
266 | "Queue %p was idle for %s, disconnecting\n", | ||
267 | queue, | ||
268 | GNUNET_STRINGS_relative_time_to_string (GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT, | ||
269 | GNUNET_YES)); | ||
270 | queue_destroy (queue); | ||
271 | } | ||
272 | |||
273 | |||
274 | /** | ||
275 | * Increment queue timeout due to activity. We do not immediately | ||
276 | * notify the monitor here as that might generate excessive | ||
277 | * signalling. | ||
278 | * | ||
279 | * @param queue queue for which the timeout should be rescheduled | ||
280 | */ | ||
281 | static void | ||
282 | reschedule_queue_timeout (struct Queue *queue) | ||
283 | { | ||
284 | GNUNET_assert (NULL != queue->timeout_task); | ||
285 | queue->timeout | ||
286 | = GNUNET_TIME_relative_to_absolute (GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT); | ||
287 | } | ||
288 | |||
289 | |||
290 | /** | ||
291 | * Convert unix path to a `struct sockaddr_un *` | ||
292 | * | ||
293 | * @param unixpath path to convert | ||
294 | * @param[out] sock_len set to the length of the address | ||
295 | * @param is_abstract is this an abstract @a unixpath | ||
296 | * @return converted unix path | ||
297 | */ | ||
298 | static struct sockaddr_un * | ||
299 | unix_address_to_sockaddr (const char *unixpath, | ||
300 | socklen_t *sock_len) | ||
301 | { | ||
302 | struct sockaddr_un *un; | ||
303 | size_t slen; | ||
304 | |||
305 | GNUNET_assert (0 < strlen (unixpath)); /* sanity check */ | ||
306 | un = GNUNET_new (struct sockaddr_un); | ||
307 | un->sun_family = AF_UNIX; | ||
308 | slen = strlen (unixpath); | ||
309 | if (slen >= sizeof (un->sun_path)) | ||
310 | slen = sizeof (un->sun_path) - 1; | ||
311 | GNUNET_memcpy (un->sun_path, | ||
312 | unixpath, | ||
313 | slen); | ||
314 | un->sun_path[slen] = '\0'; | ||
315 | slen = sizeof (struct sockaddr_un); | ||
316 | #if HAVE_SOCKADDR_UN_SUN_LEN | ||
317 | un->sun_len = (u_char) slen; | ||
318 | #endif | ||
319 | (*sock_len) = slen; | ||
320 | if ('@' == un->sun_path[0]) | ||
321 | un->sun_path[0] = '\0'; | ||
322 | return un; | ||
323 | } | ||
324 | |||
325 | |||
326 | /** | ||
327 | * Closure to #lookup_queue_it(). | ||
328 | */ | ||
329 | struct LookupCtx | ||
330 | { | ||
331 | /** | ||
332 | * Location to store the queue, if found. | ||
333 | */ | ||
334 | struct Queue *res; | ||
335 | |||
336 | /** | ||
337 | * Address we are looking for. | ||
338 | */ | ||
339 | const struct sockaddr_un *un; | ||
340 | |||
341 | /** | ||
342 | * Number of bytes in @a un | ||
343 | */ | ||
344 | socklen_t un_len; | ||
345 | }; | ||
346 | |||
347 | |||
348 | /** | ||
349 | * Function called to find a queue by address. | ||
350 | * | ||
351 | * @param cls the `struct LookupCtx *` | ||
352 | * @param key peer we are looking for (unused) | ||
353 | * @param value a queue | ||
354 | * @return #GNUNET_YES if not found (continue looking), #GNUNET_NO on success | ||
355 | */ | ||
356 | static int | ||
357 | lookup_queue_it (void *cls, | ||
358 | const struct GNUNET_PeerIdentity *key, | ||
359 | void *value) | ||
360 | { | ||
361 | struct LookupCtx *lctx = cls; | ||
362 | struct Queue *queue = value; | ||
363 | |||
364 | if ( (queue->address_len = lctx->un_len) && | ||
365 | (0 == memcmp (lctx->un, | ||
366 | queue->address, | ||
367 | queue->address_len)) ) | ||
368 | { | ||
369 | lctx->res = queue; | ||
370 | return GNUNET_NO; | ||
371 | } | ||
372 | return GNUNET_YES; | ||
373 | } | ||
374 | |||
375 | |||
376 | /** | ||
377 | * Find an existing queue by address. | ||
378 | * | ||
379 | * @param plugin the plugin | ||
380 | * @param address the address to find | ||
381 | * @return NULL if queue was not found | ||
382 | */ | ||
383 | static struct Queue * | ||
384 | lookup_queue (const struct GNUNET_PeerIdentity *peer, | ||
385 | const struct sockaddr_un *un, | ||
386 | socklen_t un_len) | ||
387 | { | ||
388 | struct LookupCtx lctx; | ||
389 | |||
390 | lctx.un = un; | ||
391 | lctx.un_len = un_len; | ||
392 | GNUNET_CONTAINER_multipeermap_get_multiple (queue_map, | ||
393 | peer, | ||
394 | &lookup_queue_it, | ||
395 | &lctx); | ||
396 | return lctx.res; | ||
397 | } | ||
398 | |||
399 | |||
400 | /** | ||
401 | * We have been notified that our socket is ready to write. | ||
402 | * Then reschedule this function to be called again once more is available. | ||
403 | * | ||
404 | * @param cls NULL | ||
405 | */ | ||
406 | static void | ||
407 | select_write_cb (void *cls) | ||
408 | { | ||
409 | struct Queue *queue = queue_tail; | ||
410 | const struct GNUNET_MessageHeader *msg = queue->msg; | ||
411 | size_t msg_size = ntohs (msg->size); | ||
412 | ssize_t sent; | ||
413 | |||
414 | /* take queue of the ready list */ | ||
415 | write_task = NULL; | ||
416 | GNUNET_CONTAINER_DLL_remove (queue_head, | ||
417 | queue_tail, | ||
418 | queue); | ||
419 | if (NULL != queue_head) | ||
420 | write_task = | ||
421 | GNUNET_SCHEDULER_add_write_net (GNUNET_TIME_UNIT_FOREVER_REL, | ||
422 | unix_sock, | ||
423 | &select_write_cb, | ||
424 | NULL); | ||
425 | |||
426 | /* send 'msg' */ | ||
427 | queue->msg = NULL; | ||
428 | GNUNET_MQ_impl_send_continue (queue->mq); | ||
429 | resend: | ||
430 | /* Send the data */ | ||
431 | sent = GNUNET_NETWORK_socket_sendto (unix_sock, | ||
432 | queue->msg, | ||
433 | msg_size, | ||
434 | (const struct sockaddr *) queue->address, | ||
435 | queue->address_len); | ||
436 | GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, | ||
437 | "UNIX transmitted message to %s (%d/%u: %s)\n", | ||
438 | GNUNET_i2s (&queue->target), | ||
439 | (int) sent, | ||
440 | (unsigned int) msg_size, | ||
441 | (sent < 0) ? STRERROR (errno) : "ok"); | ||
442 | if (-1 != sent) | ||
443 | { | ||
444 | GNUNET_STATISTICS_update (stats, | ||
445 | "# bytes sent", | ||
446 | (long long) sent, | ||
447 | GNUNET_NO); | ||
448 | reschedule_queue_timeout (queue); | ||
449 | return; /* all good */ | ||
450 | } | ||
451 | GNUNET_STATISTICS_update (stats, | ||
452 | "# network transmission failures", | ||
453 | 1, | ||
454 | GNUNET_NO); | ||
455 | switch (errno) | ||
456 | { | ||
457 | case EAGAIN: | ||
458 | case ENOBUFS: | ||
459 | /* We should retry later... */ | ||
460 | GNUNET_log_strerror (GNUNET_ERROR_TYPE_DEBUG, | ||
461 | "send"); | ||
462 | return; | ||
463 | case EMSGSIZE: | ||
464 | { | ||
465 | socklen_t size = 0; | ||
466 | socklen_t len = sizeof (size); | ||
467 | |||
468 | GNUNET_NETWORK_socket_getsockopt (unix_sock, | ||
469 | SOL_SOCKET, | ||
470 | SO_SNDBUF, | ||
471 | &size, | ||
472 | &len); | ||
473 | if (size > ntohs (msg->size)) | ||
474 | { | ||
475 | /* Buffer is bigger than message: error, no retry | ||
476 | * This should never happen!*/ | ||
477 | GNUNET_break (0); | ||
478 | return; | ||
479 | } | ||
480 | GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, | ||
481 | "Trying to increase socket buffer size from %u to %u for message size %u\n", | ||
482 | (unsigned int) size, | ||
483 | (unsigned int) ((msg_size / 1000) + 2) * 1000, | ||
484 | (unsigned int) msg_size); | ||
485 | size = ((msg_size / 1000) + 2) * 1000; | ||
486 | if (GNUNET_OK == | ||
487 | GNUNET_NETWORK_socket_setsockopt (unix_sock, | ||
488 | SOL_SOCKET, | ||
489 | SO_SNDBUF, | ||
490 | &size, | ||
491 | sizeof (size))) | ||
492 | goto resend; /* Increased buffer size, retry sending */ | ||
493 | /* Ok, then just try very modest increase */ | ||
494 | size = msg_size; | ||
495 | if (GNUNET_OK == | ||
496 | GNUNET_NETWORK_socket_setsockopt (unix_sock, | ||
497 | SOL_SOCKET, | ||
498 | SO_SNDBUF, | ||
499 | &size, | ||
500 | sizeof (size))) | ||
501 | goto resend; /* Increased buffer size, retry sending */ | ||
502 | /* Could not increase buffer size: error, no retry */ | ||
503 | GNUNET_log_strerror (GNUNET_ERROR_TYPE_ERROR, | ||
504 | "setsockopt"); | ||
505 | return; | ||
506 | } | ||
507 | default: | ||
508 | GNUNET_log_strerror (GNUNET_ERROR_TYPE_ERROR, | ||
509 | "send"); | ||
510 | return; | ||
511 | } | ||
512 | } | ||
513 | |||
514 | |||
515 | /** | ||
516 | * Signature of functions implementing the sending functionality of a | ||
517 | * message queue. | ||
518 | * | ||
519 | * @param mq the message queue | ||
520 | * @param msg the message to send | ||
521 | * @param impl_state our `struct Queue` | ||
522 | */ | ||
523 | static void | ||
524 | mq_send (struct GNUNET_MQ_Handle *mq, | ||
525 | const struct GNUNET_MessageHeader *msg, | ||
526 | void *impl_state) | ||
527 | { | ||
528 | struct Queue *queue = impl_state; | ||
529 | |||
530 | GNUNET_assert (mq == queue->mq); | ||
531 | GNUNET_assert (NULL == queue->msg); | ||
532 | queue->msg = msg; | ||
533 | GNUNET_CONTAINER_DLL_insert (queue_head, | ||
534 | queue_tail, | ||
535 | queue); | ||
536 | if (NULL == write_task) | ||
537 | write_task = | ||
538 | GNUNET_SCHEDULER_add_write_net (GNUNET_TIME_UNIT_FOREVER_REL, | ||
539 | unix_sock, | ||
540 | &select_write_cb, | ||
541 | NULL); | ||
542 | } | ||
543 | |||
544 | |||
545 | /** | ||
546 | * Signature of functions implementing the destruction of a message | ||
547 | * queue. Implementations must not free @a mq, but should take care | ||
548 | * of @a impl_state. | ||
549 | * | ||
550 | * @param mq the message queue to destroy | ||
551 | * @param impl_state our `struct Queue` | ||
552 | */ | ||
553 | static void | ||
554 | mq_destroy (struct GNUNET_MQ_Handle *mq, | ||
555 | void *impl_state) | ||
556 | { | ||
557 | struct Queue *queue = impl_state; | ||
558 | |||
559 | if (mq == queue->mq) | ||
560 | { | ||
561 | queue->mq = NULL; | ||
562 | queue_destroy (queue); | ||
563 | } | ||
564 | } | ||
565 | |||
566 | |||
567 | /** | ||
568 | * Implementation function that cancels the currently sent message. | ||
569 | * | ||
570 | * @param mq message queue | ||
571 | * @param impl_state our `struct Queue` | ||
572 | */ | ||
573 | static void | ||
574 | mq_cancel (struct GNUNET_MQ_Handle *mq, | ||
575 | void *impl_state) | ||
576 | { | ||
577 | struct Queue *queue = impl_state; | ||
578 | |||
579 | GNUNET_assert (NULL != queue->msg); | ||
580 | queue->msg = NULL; | ||
581 | GNUNET_CONTAINER_DLL_remove (queue_head, | ||
582 | queue_tail, | ||
583 | queue); | ||
584 | GNUNET_assert (NULL != write_task); | ||
585 | if (NULL == queue_head) | ||
586 | { | ||
587 | GNUNET_SCHEDULER_cancel (write_task); | ||
588 | write_task = NULL; | ||
589 | } | ||
590 | } | ||
591 | |||
592 | |||
593 | /** | ||
594 | * Generic error handler, called with the appropriate | ||
595 | * error code and the same closure specified at the creation of | ||
596 | * the message queue. | ||
597 | * Not every message queue implementation supports an error handler. | ||
598 | * | ||
599 | * @param cls our `struct Queue` | ||
600 | * @param error error code | ||
601 | */ | ||
602 | static void | ||
603 | mq_error (void *cls, | ||
604 | enum GNUNET_MQ_Error error) | ||
605 | { | ||
606 | struct Queue *queue = cls; | ||
607 | |||
608 | GNUNET_log (GNUNET_ERROR_TYPE_ERROR, | ||
609 | "UNIX MQ error in queue to %s: %d\n", | ||
610 | GNUNET_i2s (&queue->target), | ||
611 | (int) error); | ||
612 | queue_destroy (queue); | ||
613 | } | ||
614 | |||
615 | |||
616 | /** | ||
617 | * Creates a new outbound queue the transport service will use to send | ||
618 | * data to another peer. | ||
619 | * | ||
620 | * @param peer the target peer | ||
621 | * @param un the address | ||
622 | * @param un_len number of bytes in @a un | ||
623 | * @return the queue or NULL of max connections exceeded | ||
624 | */ | ||
625 | static struct Queue * | ||
626 | setup_queue (const struct GNUNET_PeerIdentity *target, | ||
627 | const struct sockaddr_un *un, | ||
628 | socklen_t un_len) | ||
629 | { | ||
630 | struct Queue *queue; | ||
631 | |||
632 | queue = GNUNET_new (struct Queue); | ||
633 | queue->target = *target; | ||
634 | queue->address = GNUNET_memdup (un, | ||
635 | un_len); | ||
636 | queue->address_len = un_len; | ||
637 | (void) GNUNET_CONTAINER_multipeermap_put (queue_map, | ||
638 | &queue->target, | ||
639 | queue, | ||
640 | GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE); | ||
641 | GNUNET_STATISTICS_set (stats, | ||
642 | "# queues active", | ||
643 | GNUNET_CONTAINER_multipeermap_size (queue_map), | ||
644 | GNUNET_NO); | ||
645 | queue->timeout = GNUNET_TIME_relative_to_absolute (GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT); | ||
646 | queue->timeout_task | ||
647 | = GNUNET_SCHEDULER_add_delayed (GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT, | ||
648 | &queue_timeout, | ||
649 | queue); | ||
650 | queue->mq | ||
651 | = GNUNET_MQ_queue_for_callbacks (&mq_send, | ||
652 | &mq_destroy, | ||
653 | &mq_cancel, | ||
654 | queue, | ||
655 | NULL, | ||
656 | &mq_error, | ||
657 | queue); | ||
658 | { | ||
659 | char *foreign_addr; | ||
660 | |||
661 | if ('\0' == un->sun_path[0]) | ||
662 | GNUNET_asprintf (&foreign_addr, | ||
663 | "%s-@%s", | ||
664 | COMMUNICATOR_ADDRESS_PREFIX, | ||
665 | &un->sun_path[1]); | ||
666 | else | ||
667 | GNUNET_asprintf (&foreign_addr, | ||
668 | "%s-%s", | ||
669 | COMMUNICATOR_ADDRESS_PREFIX, | ||
670 | un->sun_path); | ||
671 | queue->qh | ||
672 | = GNUNET_TRANSPORT_communicator_mq_add (ch, | ||
673 | &queue->target, | ||
674 | foreign_addr, | ||
675 | GNUNET_ATS_NET_LOOPBACK, | ||
676 | queue->mq); | ||
677 | GNUNET_free (foreign_addr); | ||
678 | } | ||
679 | return queue; | ||
680 | } | ||
681 | |||
682 | |||
683 | /** | ||
684 | * We have been notified that our socket has something to read. Do the | ||
685 | * read and reschedule this function to be called again once more is | ||
686 | * available. | ||
687 | * | ||
688 | * @param cls NULL | ||
689 | */ | ||
690 | static void | ||
691 | select_read_cb (void *cls); | ||
692 | |||
693 | |||
694 | /** | ||
695 | * Function called when message was successfully passed to | ||
696 | * transport service. Continue read activity. | ||
697 | * | ||
698 | * @param cls NULL | ||
699 | * @param success #GNUNET_OK on success | ||
700 | */ | ||
701 | static void | ||
702 | receive_complete_cb (void *cls, | ||
703 | int success) | ||
704 | { | ||
705 | delivering_messages--; | ||
706 | if (GNUNET_OK != success) | ||
707 | GNUNET_STATISTICS_update (stats, | ||
708 | "# transport transmission failures", | ||
709 | 1, | ||
710 | GNUNET_NO); | ||
711 | if ( (NULL == read_task) && | ||
712 | (delivering_messages < max_queue_length) ) | ||
713 | read_task = GNUNET_SCHEDULER_add_read_net (GNUNET_TIME_UNIT_FOREVER_REL, | ||
714 | unix_sock, | ||
715 | &select_read_cb, | ||
716 | NULL); | ||
717 | } | ||
718 | |||
719 | |||
720 | /** | ||
721 | * We have been notified that our socket has something to read. Do the | ||
722 | * read and reschedule this function to be called again once more is | ||
723 | * available. | ||
724 | * | ||
725 | * @param cls NULL | ||
726 | */ | ||
727 | static void | ||
728 | select_read_cb (void *cls) | ||
729 | { | ||
730 | char buf[65536] GNUNET_ALIGN; | ||
731 | struct Queue *queue; | ||
732 | const struct UNIXMessage *msg; | ||
733 | struct sockaddr_un un; | ||
734 | socklen_t addrlen; | ||
735 | ssize_t ret; | ||
736 | uint16_t msize; | ||
737 | |||
738 | read_task = GNUNET_SCHEDULER_add_read_net (GNUNET_TIME_UNIT_FOREVER_REL, | ||
739 | unix_sock, | ||
740 | &select_read_cb, | ||
741 | NULL); | ||
742 | addrlen = sizeof (un); | ||
743 | memset (&un, | ||
744 | 0, | ||
745 | sizeof (un)); | ||
746 | ret = GNUNET_NETWORK_socket_recvfrom (unix_sock, | ||
747 | buf, | ||
748 | sizeof (buf), | ||
749 | (struct sockaddr *) &un, | ||
750 | &addrlen); | ||
751 | if ( (-1 == ret) && | ||
752 | ( (EAGAIN == errno) || | ||
753 | (ENOBUFS == errno) ) ) | ||
754 | return; | ||
755 | if (-1 == ret) | ||
756 | { | ||
757 | GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING, | ||
758 | "recvfrom"); | ||
759 | return; | ||
760 | } | ||
761 | GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, | ||
762 | "Read %d bytes from socket %s\n", | ||
763 | (int) ret, | ||
764 | un.sun_path); | ||
765 | GNUNET_assert (AF_UNIX == (un.sun_family)); | ||
766 | msg = (struct UNIXMessage *) buf; | ||
767 | msize = ntohs (msg->header.size); | ||
768 | if ( (msize < sizeof (struct UNIXMessage)) || | ||
769 | (msize > ret) ) | ||
770 | { | ||
771 | GNUNET_break_op (0); | ||
772 | return; | ||
773 | } | ||
774 | queue = lookup_queue (&msg->sender, | ||
775 | &un, | ||
776 | addrlen); | ||
777 | if (NULL == queue) | ||
778 | queue = setup_queue (&msg->sender, | ||
779 | &un, | ||
780 | addrlen); | ||
781 | else | ||
782 | reschedule_queue_timeout (queue); | ||
783 | if (NULL == queue) | ||
784 | { | ||
785 | GNUNET_log (GNUNET_ERROR_TYPE_ERROR, | ||
786 | _("Maximum number of UNIX connections exceeded, dropping incoming message\n")); | ||
787 | return; | ||
788 | } | ||
789 | |||
790 | { | ||
791 | uint16_t offset = 0; | ||
792 | uint16_t tsize = msize - sizeof (struct UNIXMessage); | ||
793 | const char *msgbuf = (const char *) &msg[1]; | ||
794 | |||
795 | while (offset + sizeof (struct GNUNET_MessageHeader) <= tsize) | ||
796 | { | ||
797 | const struct GNUNET_MessageHeader *currhdr; | ||
798 | struct GNUNET_MessageHeader al_hdr; | ||
799 | uint16_t csize; | ||
800 | |||
801 | currhdr = (const struct GNUNET_MessageHeader *) &msgbuf[offset]; | ||
802 | /* ensure aligned access */ | ||
803 | memcpy (&al_hdr, | ||
804 | currhdr, | ||
805 | sizeof (al_hdr)); | ||
806 | csize = ntohs (al_hdr.size); | ||
807 | if ( (csize < sizeof (struct GNUNET_MessageHeader)) || | ||
808 | (csize > tsize - offset)) | ||
809 | { | ||
810 | GNUNET_break_op (0); | ||
811 | break; | ||
812 | } | ||
813 | ret = GNUNET_TRANSPORT_communicator_receive (ch, | ||
814 | &msg->sender, | ||
815 | currhdr, | ||
816 | &receive_complete_cb, | ||
817 | NULL); | ||
818 | if (GNUNET_SYSERR == ret) | ||
819 | return; /* transport not up */ | ||
820 | if (GNUNET_NO == ret) | ||
821 | break; | ||
822 | delivering_messages++; | ||
823 | offset += csize; | ||
824 | } | ||
825 | } | ||
826 | if (delivering_messages >= max_queue_length) | ||
827 | { | ||
828 | /* we should try to apply 'back pressure' */ | ||
829 | GNUNET_SCHEDULER_cancel (read_task); | ||
830 | read_task = NULL; | ||
831 | } | ||
832 | } | ||
833 | |||
834 | |||
835 | /** | ||
836 | * Function called by the transport service to initialize a | ||
837 | * message queue given address information about another peer. | ||
838 | * If and when the communication channel is established, the | ||
839 | * communicator must call #GNUNET_TRANSPORT_communicator_mq_add() | ||
840 | * to notify the service that the channel is now up. It is | ||
841 | * the responsibility of the communicator to manage sane | ||
842 | * retries and timeouts for any @a peer/@a address combination | ||
843 | * provided by the transport service. Timeouts and retries | ||
844 | * do not need to be signalled to the transport service. | ||
845 | * | ||
846 | * @param cls closure | ||
847 | * @param peer identity of the other peer | ||
848 | * @param address where to send the message, human-readable | ||
849 | * communicator-specific format, 0-terminated, UTF-8 | ||
850 | * @return #GNUNET_OK on success, #GNUNET_SYSERR if the provided address is invalid | ||
851 | */ | ||
852 | static int | ||
853 | mq_init (void *cls, | ||
854 | const struct GNUNET_PeerIdentity *peer, | ||
855 | const char *address) | ||
856 | { | ||
857 | struct Queue *queue; | ||
858 | const char *path; | ||
859 | struct sockaddr_un *un; | ||
860 | socklen_t un_len; | ||
861 | |||
862 | if (0 != strncmp (address, | ||
863 | COMMUNICATOR_ADDRESS_PREFIX "-", | ||
864 | strlen (COMMUNICATOR_ADDRESS_PREFIX "-"))) | ||
865 | { | ||
866 | GNUNET_break_op (0); | ||
867 | return GNUNET_SYSERR; | ||
868 | } | ||
869 | path = &address[strlen (COMMUNICATOR_ADDRESS_PREFIX "-")]; | ||
870 | un = unix_address_to_sockaddr (path, | ||
871 | &un_len); | ||
872 | queue = lookup_queue (peer, | ||
873 | un, | ||
874 | un_len); | ||
875 | if (NULL != queue) | ||
876 | { | ||
877 | GNUNET_log (GNUNET_ERROR_TYPE_INFO, | ||
878 | "Address `%s' for %s ignored, queue exists\n", | ||
879 | path, | ||
880 | GNUNET_i2s (peer)); | ||
881 | GNUNET_free (un); | ||
882 | return GNUNET_OK; | ||
883 | } | ||
884 | queue = setup_queue (peer, | ||
885 | un, | ||
886 | un_len); | ||
887 | GNUNET_free (un); | ||
888 | if (NULL == queue) | ||
889 | { | ||
890 | GNUNET_log (GNUNET_ERROR_TYPE_INFO, | ||
891 | "Failed to setup queue to %s at `%s'\n", | ||
892 | GNUNET_i2s (peer), | ||
893 | path); | ||
894 | return GNUNET_NO; | ||
895 | } | ||
896 | return GNUNET_OK; | ||
897 | } | ||
898 | |||
899 | |||
900 | /** | ||
901 | * Iterator over all message queues to clean up. | ||
902 | * | ||
903 | * @param cls NULL | ||
904 | * @param target unused | ||
905 | * @param value the queue to destroy | ||
906 | * @return #GNUNET_OK to continue to iterate | ||
907 | */ | ||
908 | static int | ||
909 | get_queue_delete_it (void *cls, | ||
910 | const struct GNUNET_PeerIdentity *target, | ||
911 | void *value) | ||
912 | { | ||
913 | struct Queue *queue = value; | ||
914 | |||
915 | (void) cls; | ||
916 | (void) target; | ||
917 | queue_destroy (queue); | ||
918 | return GNUNET_OK; | ||
919 | } | ||
920 | |||
921 | |||
922 | /** | ||
923 | * Shutdown the UNIX communicator. | ||
924 | * | ||
925 | * @param cls NULL (always) | ||
926 | */ | ||
927 | static void | ||
928 | do_shutdown (void *cls) | ||
929 | { | ||
930 | if (NULL != read_task) | ||
931 | { | ||
932 | GNUNET_SCHEDULER_cancel (read_task); | ||
933 | read_task = NULL; | ||
934 | } | ||
935 | if (NULL != write_task) | ||
936 | { | ||
937 | GNUNET_SCHEDULER_cancel (write_task); | ||
938 | write_task = NULL; | ||
939 | } | ||
940 | if (NULL != unix_sock) | ||
941 | { | ||
942 | GNUNET_break (GNUNET_OK == | ||
943 | GNUNET_NETWORK_socket_close (unix_sock)); | ||
944 | unix_sock = NULL; | ||
945 | } | ||
946 | GNUNET_CONTAINER_multipeermap_iterate (queue_map, | ||
947 | &get_queue_delete_it, | ||
948 | NULL); | ||
949 | GNUNET_CONTAINER_multipeermap_destroy (queue_map); | ||
950 | if (NULL != ai) | ||
951 | { | ||
952 | GNUNET_TRANSPORT_communicator_address_remove (ai); | ||
953 | ai = NULL; | ||
954 | } | ||
955 | if (NULL != ch) | ||
956 | { | ||
957 | GNUNET_TRANSPORT_communicator_disconnect (ch); | ||
958 | ch = NULL; | ||
959 | } | ||
960 | if (NULL != stats) | ||
961 | { | ||
962 | GNUNET_STATISTICS_destroy (stats, | ||
963 | GNUNET_NO); | ||
964 | stats = NULL; | ||
965 | } | ||
966 | } | ||
967 | |||
968 | |||
969 | /** | ||
970 | * Setup communicator and launch network interactions. | ||
971 | * | ||
972 | * @param cls NULL (always) | ||
973 | * @param args remaining command-line arguments | ||
974 | * @param cfgfile name of the configuration file used (for saving, can be NULL!) | ||
975 | * @param cfg configuration | ||
976 | */ | ||
977 | static void | ||
978 | run (void *cls, | ||
979 | char *const *args, | ||
980 | const char *cfgfile, | ||
981 | const struct GNUNET_CONFIGURATION_Handle *cfg) | ||
982 | { | ||
983 | char *unix_socket_path; | ||
984 | struct sockaddr_un *un; | ||
985 | socklen_t un_len; | ||
986 | char *my_addr; | ||
987 | (void) cls; | ||
988 | |||
989 | if (GNUNET_OK != | ||
990 | GNUNET_CONFIGURATION_get_value_filename (cfg, | ||
991 | COMMUNICATOR_CONFIG_SECTION, | ||
992 | "UNIXPATH", | ||
993 | &unix_socket_path)) | ||
994 | { | ||
995 | GNUNET_log_config_missing (GNUNET_ERROR_TYPE_ERROR, | ||
996 | COMMUNICATOR_CONFIG_SECTION, | ||
997 | "UNIXPATH"); | ||
998 | return; | ||
999 | } | ||
1000 | if (GNUNET_OK != | ||
1001 | GNUNET_CONFIGURATION_get_value_number (cfg, | ||
1002 | COMMUNICATOR_CONFIG_SECTION, | ||
1003 | "MAX_QUEUE_LENGTH", | ||
1004 | &max_queue_length)) | ||
1005 | max_queue_length = DEFAULT_MAX_QUEUE_LENGTH; | ||
1006 | |||
1007 | un = unix_address_to_sockaddr (unix_socket_path, | ||
1008 | &un_len); | ||
1009 | if (NULL == un) | ||
1010 | { | ||
1011 | GNUNET_log (GNUNET_ERROR_TYPE_ERROR, | ||
1012 | "Failed to setup UNIX domain socket address with path `%s'\n", | ||
1013 | unix_socket_path); | ||
1014 | GNUNET_free (unix_socket_path); | ||
1015 | return; | ||
1016 | } | ||
1017 | unix_sock = GNUNET_NETWORK_socket_create (AF_UNIX, | ||
1018 | SOCK_DGRAM, | ||
1019 | 0); | ||
1020 | if (NULL == unix_sock) | ||
1021 | { | ||
1022 | GNUNET_log_strerror (GNUNET_ERROR_TYPE_ERROR, | ||
1023 | "socket"); | ||
1024 | GNUNET_free (un); | ||
1025 | GNUNET_free (unix_socket_path); | ||
1026 | return; | ||
1027 | } | ||
1028 | if ( ('\0' != un->sun_path[0]) && | ||
1029 | (GNUNET_OK != | ||
1030 | GNUNET_DISK_directory_create_for_file (un->sun_path)) ) | ||
1031 | { | ||
1032 | GNUNET_log (GNUNET_ERROR_TYPE_ERROR, | ||
1033 | _("Cannot create path to `%s'\n"), | ||
1034 | un->sun_path); | ||
1035 | GNUNET_NETWORK_socket_close (unix_sock); | ||
1036 | unix_sock = NULL; | ||
1037 | GNUNET_free (un); | ||
1038 | GNUNET_free (unix_socket_path); | ||
1039 | return; | ||
1040 | } | ||
1041 | if (GNUNET_OK != | ||
1042 | GNUNET_NETWORK_socket_bind (unix_sock, | ||
1043 | (const struct sockaddr *) un, | ||
1044 | un_len)) | ||
1045 | { | ||
1046 | GNUNET_log_strerror_file (GNUNET_ERROR_TYPE_ERROR, | ||
1047 | "bind", | ||
1048 | un->sun_path); | ||
1049 | GNUNET_NETWORK_socket_close (unix_sock); | ||
1050 | unix_sock = NULL; | ||
1051 | GNUNET_free (un); | ||
1052 | GNUNET_free (unix_socket_path); | ||
1053 | return; | ||
1054 | } | ||
1055 | GNUNET_free (un); | ||
1056 | GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, | ||
1057 | "Bound to `%s'\n", | ||
1058 | unix_socket_path); | ||
1059 | stats = GNUNET_STATISTICS_create ("C-UNIX", | ||
1060 | cfg); | ||
1061 | GNUNET_SCHEDULER_add_shutdown (&do_shutdown, | ||
1062 | NULL); | ||
1063 | read_task = GNUNET_SCHEDULER_add_read_net (GNUNET_TIME_UNIT_FOREVER_REL, | ||
1064 | unix_sock, | ||
1065 | &select_read_cb, | ||
1066 | NULL); | ||
1067 | queue_map = GNUNET_CONTAINER_multipeermap_create (10, | ||
1068 | GNUNET_NO); | ||
1069 | ch = GNUNET_TRANSPORT_communicator_connect (cfg, | ||
1070 | COMMUNICATOR_CONFIG_SECTION, | ||
1071 | COMMUNICATOR_ADDRESS_PREFIX, | ||
1072 | 65535, | ||
1073 | &mq_init, | ||
1074 | NULL); | ||
1075 | if (NULL == ch) | ||
1076 | { | ||
1077 | GNUNET_break (0); | ||
1078 | GNUNET_SCHEDULER_shutdown (); | ||
1079 | GNUNET_free (unix_socket_path); | ||
1080 | return; | ||
1081 | } | ||
1082 | GNUNET_asprintf (&my_addr, | ||
1083 | "%s-%s", | ||
1084 | COMMUNICATOR_ADDRESS_PREFIX, | ||
1085 | unix_socket_path); | ||
1086 | ai = GNUNET_TRANSPORT_communicator_address_add (ch, | ||
1087 | my_addr, | ||
1088 | GNUNET_ATS_NET_LOOPBACK, | ||
1089 | GNUNET_TIME_UNIT_FOREVER_REL); | ||
1090 | GNUNET_free (my_addr); | ||
1091 | GNUNET_free (unix_socket_path); | ||
1092 | read_task = GNUNET_SCHEDULER_add_read_net (GNUNET_TIME_UNIT_FOREVER_REL, | ||
1093 | unix_sock, | ||
1094 | &select_read_cb, | ||
1095 | NULL); | ||
1096 | } | ||
1097 | |||
1098 | |||
1099 | /** | ||
1100 | * The main function for the UNIX communicator. | ||
1101 | * | ||
1102 | * @param argc number of arguments from the command line | ||
1103 | * @param argv command line arguments | ||
1104 | * @return 0 ok, 1 on error | ||
1105 | */ | ||
1106 | int | ||
1107 | main (int argc, | ||
1108 | char *const *argv) | ||
1109 | { | ||
1110 | static const struct GNUNET_GETOPT_CommandLineOption options[] = { | ||
1111 | GNUNET_GETOPT_OPTION_END | ||
1112 | }; | ||
1113 | int ret; | ||
1114 | |||
1115 | if (GNUNET_OK != | ||
1116 | GNUNET_STRINGS_get_utf8_args (argc, argv, | ||
1117 | &argc, &argv)) | ||
1118 | return 2; | ||
1119 | |||
1120 | ret = | ||
1121 | (GNUNET_OK == | ||
1122 | GNUNET_PROGRAM_run (argc, argv, | ||
1123 | "gnunet-communicator-unix", | ||
1124 | _("GNUnet UNIX domain socket communicator"), | ||
1125 | options, | ||
1126 | &run, | ||
1127 | NULL)) ? 0 : 1; | ||
1128 | GNUNET_free ((void*) argv); | ||
1129 | return ret; | ||
1130 | } | ||
1131 | |||
1132 | |||
1133 | #if defined(LINUX) && defined(__GLIBC__) | ||
1134 | #include <malloc.h> | ||
1135 | |||
1136 | /** | ||
1137 | * MINIMIZE heap size (way below 128k) since this process doesn't need much. | ||
1138 | */ | ||
1139 | void __attribute__ ((constructor)) | ||
1140 | GNUNET_ARM_memory_init () | ||
1141 | { | ||
1142 | mallopt (M_TRIM_THRESHOLD, 4 * 1024); | ||
1143 | mallopt (M_TOP_PAD, 1 * 1024); | ||
1144 | malloc_trim (0); | ||
1145 | } | ||
1146 | #endif | ||
1147 | |||
1148 | /* end of gnunet-communicator-unix.c */ | ||
diff --git a/src/transport/gnunet-service-tng.c b/src/transport/gnunet-service-tng.c new file mode 100644 index 000000000..8cbca3188 --- /dev/null +++ b/src/transport/gnunet-service-tng.c | |||
@@ -0,0 +1,719 @@ | |||
1 | /* | ||
2 | This file is part of GNUnet. | ||
3 | Copyright (C) 2010-2016, 2018 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 | /** | ||
19 | * @file transport/gnunet-service-transport.c | ||
20 | * @brief main for gnunet-service-transport | ||
21 | * @author Christian Grothoff | ||
22 | */ | ||
23 | #include "platform.h" | ||
24 | #include "gnunet_util_lib.h" | ||
25 | #include "gnunet_statistics_service.h" | ||
26 | #include "gnunet_transport_service.h" | ||
27 | #include "gnunet_peerinfo_service.h" | ||
28 | #include "gnunet_ats_service.h" | ||
29 | #include "gnunet-service-transport.h" | ||
30 | #include "transport.h" | ||
31 | |||
32 | |||
33 | /** | ||
34 | * How many messages can we have pending for a given client process | ||
35 | * before we start to drop incoming messages? We typically should | ||
36 | * have only one client and so this would be the primary buffer for | ||
37 | * messages, so the number should be chosen rather generously. | ||
38 | * | ||
39 | * The expectation here is that most of the time the queue is large | ||
40 | * enough so that a drop is virtually never required. Note that | ||
41 | * this value must be about as large as 'TOTAL_MSGS' in the | ||
42 | * 'test_transport_api_reliability.c', otherwise that testcase may | ||
43 | * fail. | ||
44 | */ | ||
45 | #define MAX_PENDING (128 * 1024) | ||
46 | |||
47 | |||
48 | /** | ||
49 | * What type of client is the `struct TransportClient` about? | ||
50 | */ | ||
51 | enum ClientType | ||
52 | { | ||
53 | /** | ||
54 | * We do not know yet (client is fresh). | ||
55 | */ | ||
56 | CT_NONE = 0, | ||
57 | |||
58 | /** | ||
59 | * Is the CORE service, we need to forward traffic to it. | ||
60 | */ | ||
61 | CT_CORE = 1, | ||
62 | |||
63 | /** | ||
64 | * It is a monitor, forward monitor data. | ||
65 | */ | ||
66 | CT_MONITOR = 2, | ||
67 | |||
68 | /** | ||
69 | * It is a communicator, use for communication. | ||
70 | */ | ||
71 | CT_COMMUNICATOR = 3 | ||
72 | }; | ||
73 | |||
74 | |||
75 | /** | ||
76 | * Client connected to the transport service. | ||
77 | */ | ||
78 | struct TransportClient | ||
79 | { | ||
80 | |||
81 | /** | ||
82 | * Kept in a DLL. | ||
83 | */ | ||
84 | struct TransportClient *next; | ||
85 | |||
86 | /** | ||
87 | * Kept in a DLL. | ||
88 | */ | ||
89 | struct TransportClient *prev; | ||
90 | |||
91 | /** | ||
92 | * Handle to the client. | ||
93 | */ | ||
94 | struct GNUNET_SERVICE_Client *client; | ||
95 | |||
96 | /** | ||
97 | * Message queue to the client. | ||
98 | */ | ||
99 | struct GNUNET_MQ_Handle *mq; | ||
100 | |||
101 | /** | ||
102 | * What type of client is this? | ||
103 | */ | ||
104 | enum ClientType type; | ||
105 | |||
106 | union | ||
107 | { | ||
108 | |||
109 | /** | ||
110 | * Peer identity to monitor the addresses of. | ||
111 | * Zero to monitor all neighbours. Valid if | ||
112 | * @e type is #CT_MONITOR. | ||
113 | */ | ||
114 | struct GNUNET_PeerIdentity monitor_peer; | ||
115 | |||
116 | /** | ||
117 | * If @e type is #CT_COMMUNICATOR, this communicator | ||
118 | * supports communicating using these addresses. | ||
119 | */ | ||
120 | const char *address_prefix; | ||
121 | |||
122 | } details; | ||
123 | |||
124 | }; | ||
125 | |||
126 | |||
127 | /** | ||
128 | * Head of linked list of all clients to this service. | ||
129 | */ | ||
130 | static struct TransportClient *clients_head; | ||
131 | |||
132 | /** | ||
133 | * Tail of linked list of all clients to this service. | ||
134 | */ | ||
135 | static struct TransportClient *clients_tail; | ||
136 | |||
137 | /** | ||
138 | * Statistics handle. | ||
139 | */ | ||
140 | struct GNUNET_STATISTICS_Handle *GST_stats; | ||
141 | |||
142 | /** | ||
143 | * Configuration handle. | ||
144 | */ | ||
145 | const struct GNUNET_CONFIGURATION_Handle *GST_cfg; | ||
146 | |||
147 | /** | ||
148 | * Configuration handle. | ||
149 | */ | ||
150 | struct GNUNET_PeerIdentity GST_my_identity; | ||
151 | |||
152 | /** | ||
153 | * Handle to peerinfo service. | ||
154 | */ | ||
155 | struct GNUNET_PEERINFO_Handle *GST_peerinfo; | ||
156 | |||
157 | /** | ||
158 | * Our private key. | ||
159 | */ | ||
160 | struct GNUNET_CRYPTO_EddsaPrivateKey *GST_my_private_key; | ||
161 | |||
162 | |||
163 | /** | ||
164 | * Called whenever a client connects. Allocates our | ||
165 | * data structures associated with that client. | ||
166 | * | ||
167 | * @param cls closure, NULL | ||
168 | * @param client identification of the client | ||
169 | * @param mq message queue for the client | ||
170 | * @return our `struct TransportClient` | ||
171 | */ | ||
172 | static void * | ||
173 | client_connect_cb (void *cls, | ||
174 | struct GNUNET_SERVICE_Client *client, | ||
175 | struct GNUNET_MQ_Handle *mq) | ||
176 | { | ||
177 | struct TransportClient *tc; | ||
178 | |||
179 | tc = GNUNET_new (struct TransportClient); | ||
180 | tc->client = client; | ||
181 | tc->mq = mq; | ||
182 | GNUNET_CONTAINER_DLL_insert (clients_head, | ||
183 | clients_tail, | ||
184 | tc); | ||
185 | GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, | ||
186 | "Client %p connected\n", | ||
187 | tc); | ||
188 | return tc; | ||
189 | } | ||
190 | |||
191 | |||
192 | /** | ||
193 | * Called whenever a client is disconnected. Frees our | ||
194 | * resources associated with that client. | ||
195 | * | ||
196 | * @param cls closure, NULL | ||
197 | * @param client identification of the client | ||
198 | * @param app_ctx our `struct TransportClient` | ||
199 | */ | ||
200 | static void | ||
201 | client_disconnect_cb (void *cls, | ||
202 | struct GNUNET_SERVICE_Client *client, | ||
203 | void *app_ctx) | ||
204 | { | ||
205 | struct TransportClient *tc = app_ctx; | ||
206 | |||
207 | GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, | ||
208 | "Client %p disconnected, cleaning up.\n", | ||
209 | tc); | ||
210 | GNUNET_CONTAINER_DLL_remove (clients_head, | ||
211 | clients_tail, | ||
212 | tc); | ||
213 | switch (tc->type) | ||
214 | { | ||
215 | case CT_NONE: | ||
216 | break; | ||
217 | case CT_CORE: | ||
218 | break; | ||
219 | case CT_MONITOR: | ||
220 | break; | ||
221 | case CT_COMMUNICATOR: | ||
222 | break; | ||
223 | } | ||
224 | GNUNET_free (tc); | ||
225 | } | ||
226 | |||
227 | |||
228 | /** | ||
229 | * Initialize a "CORE" client. We got a start message from this | ||
230 | * client, so add it to the list of clients for broadcasting of | ||
231 | * inbound messages. | ||
232 | * | ||
233 | * @param cls the client | ||
234 | * @param start the start message that was sent | ||
235 | */ | ||
236 | static void | ||
237 | handle_client_start (void *cls, | ||
238 | const struct StartMessage *start) | ||
239 | { | ||
240 | struct TransportClient *tc = cls; | ||
241 | const struct GNUNET_MessageHeader *hello; | ||
242 | uint32_t options; | ||
243 | |||
244 | options = ntohl (start->options); | ||
245 | if ( (0 != (1 & options)) && | ||
246 | (0 != | ||
247 | memcmp (&start->self, | ||
248 | &GST_my_identity, | ||
249 | sizeof (struct GNUNET_PeerIdentity)) ) ) | ||
250 | { | ||
251 | /* client thinks this is a different peer, reject */ | ||
252 | GNUNET_break (0); | ||
253 | GNUNET_SERVICE_client_drop (tc->client); | ||
254 | return; | ||
255 | } | ||
256 | if (CT_NONE != tc->type) | ||
257 | { | ||
258 | GNUNET_break (0); | ||
259 | GNUNET_SERVICE_client_drop (tc->client); | ||
260 | return; | ||
261 | } | ||
262 | tc->type = CT_CORE; | ||
263 | #if 0 | ||
264 | hello = GST_hello_get (); | ||
265 | if (NULL != hello) | ||
266 | unicast (tc, | ||
267 | hello, | ||
268 | GNUNET_NO); | ||
269 | #endif | ||
270 | GNUNET_SERVICE_client_continue (tc->client); | ||
271 | } | ||
272 | |||
273 | |||
274 | /** | ||
275 | * Client sent us a HELLO. Check the request. | ||
276 | * | ||
277 | * @param cls the client | ||
278 | * @param message the HELLO message | ||
279 | */ | ||
280 | static int | ||
281 | check_client_hello (void *cls, | ||
282 | const struct GNUNET_MessageHeader *message) | ||
283 | { | ||
284 | (void) cls; | ||
285 | return GNUNET_OK; /* FIXME: check here? */ | ||
286 | } | ||
287 | |||
288 | |||
289 | /** | ||
290 | * Client sent us a HELLO. Process the request. | ||
291 | * | ||
292 | * @param cls the client | ||
293 | * @param message the HELLO message | ||
294 | */ | ||
295 | static void | ||
296 | handle_client_hello (void *cls, | ||
297 | const struct GNUNET_MessageHeader *message) | ||
298 | { | ||
299 | struct TransportClient *tc = cls; | ||
300 | |||
301 | GNUNET_log (GNUNET_ERROR_TYPE_INFO, | ||
302 | "Received HELLO message\n"); | ||
303 | GNUNET_SERVICE_client_continue (tc->client); | ||
304 | } | ||
305 | |||
306 | |||
307 | /** | ||
308 | * Client asked for transmission to a peer. Process the request. | ||
309 | * | ||
310 | * @param cls the client | ||
311 | * @param obm the send message that was sent | ||
312 | */ | ||
313 | static int | ||
314 | check_client_send (void *cls, | ||
315 | const struct OutboundMessage *obm) | ||
316 | { | ||
317 | uint16_t size; | ||
318 | const struct GNUNET_MessageHeader *obmm; | ||
319 | |||
320 | (void) cls; | ||
321 | size = ntohs (obm->header.size) - sizeof (struct OutboundMessage); | ||
322 | if (size < sizeof (struct GNUNET_MessageHeader)) | ||
323 | { | ||
324 | GNUNET_break (0); | ||
325 | return GNUNET_SYSERR; | ||
326 | } | ||
327 | obmm = (const struct GNUNET_MessageHeader *) &obm[1]; | ||
328 | if (size != ntohs (obmm->size)) | ||
329 | { | ||
330 | GNUNET_break (0); | ||
331 | return GNUNET_SYSERR; | ||
332 | } | ||
333 | return GNUNET_OK; | ||
334 | } | ||
335 | |||
336 | |||
337 | /** | ||
338 | * Client asked for transmission to a peer. Process the request. | ||
339 | * | ||
340 | * @param cls the client | ||
341 | * @param obm the send message that was sent | ||
342 | */ | ||
343 | static void | ||
344 | handle_client_send (void *cls, | ||
345 | const struct OutboundMessage *obm) | ||
346 | { | ||
347 | struct TransportClient *tc = cls; | ||
348 | const struct GNUNET_MessageHeader *obmm; | ||
349 | |||
350 | obmm = (const struct GNUNET_MessageHeader *) &obm[1]; | ||
351 | } | ||
352 | |||
353 | |||
354 | /** | ||
355 | * Communicator started. Test message is well-formed. | ||
356 | * | ||
357 | * @param cls the client | ||
358 | * @param cam the send message that was sent | ||
359 | */ | ||
360 | static int | ||
361 | check_communicator_available (void *cls, | ||
362 | const struct GNUNET_TRANSPORT_CommunicatorAvailableMessage *cam) | ||
363 | { | ||
364 | const char *addr; | ||
365 | uint16_t size; | ||
366 | |||
367 | (void) cls; | ||
368 | size = ntohs (cam->header.size) - sizeof (*cam); | ||
369 | if (0 == size) | ||
370 | return GNUNET_OK; /* receive-only communicator */ | ||
371 | addr = (const char *) &cam[1]; | ||
372 | if ('\0' != addr[size-1]) | ||
373 | { | ||
374 | GNUNET_break (0); | ||
375 | return GNUNET_SYSERR; | ||
376 | } | ||
377 | return GNUNET_OK; | ||
378 | } | ||
379 | |||
380 | |||
381 | /** | ||
382 | * Communicator started. Process the request. | ||
383 | * | ||
384 | * @param cls the client | ||
385 | * @param cam the send message that was sent | ||
386 | */ | ||
387 | static void | ||
388 | handle_communicator_available (void *cls, | ||
389 | const struct GNUNET_TRANSPORT_CommunicatorAvailableMessage *cam) | ||
390 | { | ||
391 | struct TransportClient *tc = cls; | ||
392 | uint16_t size; | ||
393 | |||
394 | if (CT_NONE != tc->type) | ||
395 | { | ||
396 | GNUNET_break (0); | ||
397 | GNUNET_SERVICE_client_drop (tc->client); | ||
398 | return; | ||
399 | } | ||
400 | tc->type = CT_COMMUNICATOR; | ||
401 | size = ntohs (cam->header.size) - sizeof (*cam); | ||
402 | if (0 == size) | ||
403 | return GNUNET_OK; /* receive-only communicator */ | ||
404 | tc->details.address_prefix = GNUNET_strdup ((const char *) &cam[1]); | ||
405 | GNUNET_SERVICE_client_continue (tc->client); | ||
406 | } | ||
407 | |||
408 | |||
409 | /** | ||
410 | * Address of our peer added. Test message is well-formed. | ||
411 | * | ||
412 | * @param cls the client | ||
413 | * @param aam the send message that was sent | ||
414 | */ | ||
415 | static int | ||
416 | check_add_address (void *cls, | ||
417 | const struct GNUNET_TRANSPORT_AddAddressMessage *aam) | ||
418 | { | ||
419 | const char *addr; | ||
420 | uint16_t size; | ||
421 | |||
422 | (void) cls; | ||
423 | size = ntohs (aam->header.size) - sizeof (*aam); | ||
424 | if (0 == size) | ||
425 | { | ||
426 | GNUNET_break (0); | ||
427 | return GNUNET_SYSERR; | ||
428 | } | ||
429 | addr = (const char *) &cam[1]; | ||
430 | if ('\0' != addr[size-1]) | ||
431 | { | ||
432 | GNUNET_break (0); | ||
433 | return GNUNET_SYSERR; | ||
434 | } | ||
435 | return GNUNET_OK; | ||
436 | } | ||
437 | |||
438 | |||
439 | /** | ||
440 | * Address of our peer added. Process the request. | ||
441 | * | ||
442 | * @param cls the client | ||
443 | * @param aam the send message that was sent | ||
444 | */ | ||
445 | static void | ||
446 | handle_add_address (void *cls, | ||
447 | const struct GNUNET_TRANSPORT_AddAddressMessage *aam) | ||
448 | { | ||
449 | struct TransportClient *tc = cls; | ||
450 | |||
451 | GNUNET_SERVICE_client_continue (tc->client); | ||
452 | } | ||
453 | |||
454 | |||
455 | /** | ||
456 | * Address of our peer deleted. Process the request. | ||
457 | * | ||
458 | * @param cls the client | ||
459 | * @param dam the send message that was sent | ||
460 | */ | ||
461 | static void | ||
462 | handle_del_address (void *cls, | ||
463 | const struct GNUNET_TRANSPORT_DelAddressMessage *dam) | ||
464 | { | ||
465 | struct TransportClient *tc = cls; | ||
466 | |||
467 | GNUNET_SERVICE_client_continue (tc->client); | ||
468 | } | ||
469 | |||
470 | |||
471 | /** | ||
472 | * Client asked for transmission to a peer. Process the request. | ||
473 | * | ||
474 | * @param cls the client | ||
475 | * @param obm the send message that was sent | ||
476 | */ | ||
477 | static int | ||
478 | check_incoming_msg (void *cls, | ||
479 | const struct GNUNET_TRANSPORT_IncomingMessage *im) | ||
480 | { | ||
481 | uint16_t size; | ||
482 | const struct GNUNET_MessageHeader *obmm; | ||
483 | |||
484 | (void) cls; | ||
485 | size = ntohs (im->header.size) - sizeof (*im); | ||
486 | if (size < sizeof (struct GNUNET_MessageHeader)) | ||
487 | { | ||
488 | GNUNET_break (0); | ||
489 | return GNUNET_SYSERR; | ||
490 | } | ||
491 | obmm = (const struct GNUNET_MessageHeader *) &im[1]; | ||
492 | if (size != ntohs (obmm->size)) | ||
493 | { | ||
494 | GNUNET_break (0); | ||
495 | return GNUNET_SYSERR; | ||
496 | } | ||
497 | return GNUNET_OK; | ||
498 | } | ||
499 | |||
500 | |||
501 | /** | ||
502 | * Incoming meessage. Process the request. | ||
503 | * | ||
504 | * @param cls the client | ||
505 | * @param im the send message that was received | ||
506 | */ | ||
507 | static void | ||
508 | handle_incoming_msg (void *cls, | ||
509 | const struct GNUNET_TRANSPORT_IncomingMessage *im) | ||
510 | { | ||
511 | struct TransportClient *tc = cls; | ||
512 | |||
513 | GNUNET_SERVICE_client_continue (tc->client); | ||
514 | } | ||
515 | |||
516 | |||
517 | /** | ||
518 | * New queue became available. Check message. | ||
519 | * | ||
520 | * @param cls the client | ||
521 | * @param aqm the send message that was sent | ||
522 | */ | ||
523 | static int | ||
524 | check_add_queue_message (void *cls, | ||
525 | const struct GNUNET_TRANSPORT_AddQueueMessage *aqm) | ||
526 | { | ||
527 | const char *addr; | ||
528 | uint16_t size; | ||
529 | |||
530 | (void) cls; | ||
531 | size = ntohs (aqm->header.size) - sizeof (*aqm); | ||
532 | if (0 == size) | ||
533 | { | ||
534 | GNUNET_break (0); | ||
535 | return GNUNET_SYSERR; | ||
536 | } | ||
537 | addr = (const char *) &aqm[1]; | ||
538 | if ('\0' != addr[size-1]) | ||
539 | { | ||
540 | GNUNET_break (0); | ||
541 | return GNUNET_SYSERR; | ||
542 | } | ||
543 | return GNUNET_OK; | ||
544 | } | ||
545 | |||
546 | |||
547 | /** | ||
548 | * New queue became available. Process the request. | ||
549 | * | ||
550 | * @param cls the client | ||
551 | * @param aqm the send message that was sent | ||
552 | */ | ||
553 | static void | ||
554 | handle_add_queue_message (void *cls, | ||
555 | const struct GNUNET_TRANSPORT_AddQueueMessage *aqm) | ||
556 | { | ||
557 | struct TransportClient *tc = cls; | ||
558 | |||
559 | GNUNET_SERVICE_client_continue (tc->client); | ||
560 | } | ||
561 | |||
562 | |||
563 | /** | ||
564 | * Queue to a peer went down. Process the request. | ||
565 | * | ||
566 | * @param cls the client | ||
567 | * @param dqm the send message that was sent | ||
568 | */ | ||
569 | static void | ||
570 | handle_del_queue_message (void *cls, | ||
571 | const struct GNUNET_TRANSPORT_DelQueueMessage *dqm) | ||
572 | { | ||
573 | struct TransportClient *tc = cls; | ||
574 | |||
575 | GNUNET_SERVICE_client_continue (tc->client); | ||
576 | } | ||
577 | |||
578 | |||
579 | /** | ||
580 | * Message was transmitted. Process the request. | ||
581 | * | ||
582 | * @param cls the client | ||
583 | * @param sma the send message that was sent | ||
584 | */ | ||
585 | static void | ||
586 | handle_send_message_ack (void *cls, | ||
587 | const struct GNUNET_TRANSPORT_SendMessageToAck *sma) | ||
588 | { | ||
589 | struct TransportClient *tc = cls; | ||
590 | |||
591 | GNUNET_SERVICE_client_continue (tc->client); | ||
592 | } | ||
593 | |||
594 | |||
595 | /** | ||
596 | * Function called when the service shuts down. Unloads our plugins | ||
597 | * and cancels pending validations. | ||
598 | * | ||
599 | * @param cls closure, unused | ||
600 | */ | ||
601 | static void | ||
602 | shutdown_task (void *cls) | ||
603 | { | ||
604 | (void) cls; | ||
605 | |||
606 | if (NULL != GST_stats) | ||
607 | { | ||
608 | GNUNET_STATISTICS_destroy (GST_stats, | ||
609 | GNUNET_NO); | ||
610 | GST_stats = NULL; | ||
611 | } | ||
612 | if (NULL != GST_my_private_key) | ||
613 | { | ||
614 | GNUNET_free (GST_my_private_key); | ||
615 | GST_my_private_key = NULL; | ||
616 | } | ||
617 | } | ||
618 | |||
619 | |||
620 | /** | ||
621 | * Initiate transport service. | ||
622 | * | ||
623 | * @param cls closure | ||
624 | * @param c configuration to use | ||
625 | * @param service the initialized service | ||
626 | */ | ||
627 | static void | ||
628 | run (void *cls, | ||
629 | const struct GNUNET_CONFIGURATION_Handle *c, | ||
630 | struct GNUNET_SERVICE_Handle *service) | ||
631 | { | ||
632 | /* setup globals */ | ||
633 | GST_cfg = c; | ||
634 | if (GNUNET_OK != | ||
635 | GNUNET_CONFIGURATION_get_value_time (c, | ||
636 | "transport", | ||
637 | "HELLO_EXPIRATION", | ||
638 | &hello_expiration)) | ||
639 | { | ||
640 | hello_expiration = GNUNET_CONSTANTS_HELLO_ADDRESS_EXPIRATION; | ||
641 | } | ||
642 | GST_my_private_key = GNUNET_CRYPTO_eddsa_key_create_from_configuration (cfg); | ||
643 | if (NULL == GST_my_private_key) | ||
644 | { | ||
645 | GNUNET_log(GNUNET_ERROR_TYPE_ERROR, | ||
646 | _("Transport service is lacking key configuration settings. Exiting.\n")); | ||
647 | GNUNET_SCHEDULER_shutdown (); | ||
648 | return; | ||
649 | } | ||
650 | GNUNET_CRYPTO_eddsa_key_get_public (GST_my_private_key, | ||
651 | &GST_my_identity.public_key); | ||
652 | GNUNET_log(GNUNET_ERROR_TYPE_INFO, | ||
653 | "My identity is `%s'\n", | ||
654 | GNUNET_i2s_full (&GST_my_identity)); | ||
655 | |||
656 | GST_stats = GNUNET_STATISTICS_create ("transport", | ||
657 | GST_cfg); | ||
658 | GNUNET_SCHEDULER_add_shutdown (&shutdown_task, | ||
659 | NULL); | ||
660 | /* start subsystems */ | ||
661 | } | ||
662 | |||
663 | |||
664 | /** | ||
665 | * Define "main" method using service macro. | ||
666 | */ | ||
667 | GNUNET_SERVICE_MAIN | ||
668 | ("transport", | ||
669 | GNUNET_SERVICE_OPTION_NONE, | ||
670 | &run, | ||
671 | &client_connect_cb, | ||
672 | &client_disconnect_cb, | ||
673 | NULL, | ||
674 | /* communication with core */ | ||
675 | GNUNET_MQ_hd_fixed_size (client_start, | ||
676 | GNUNET_MESSAGE_TYPE_TRANSPORT_START, | ||
677 | struct StartMessage, | ||
678 | NULL), | ||
679 | GNUNET_MQ_hd_var_size (client_hello, | ||
680 | GNUNET_MESSAGE_TYPE_HELLO, | ||
681 | struct GNUNET_MessageHeader, | ||
682 | NULL), | ||
683 | GNUNET_MQ_hd_var_size (client_send, | ||
684 | GNUNET_MESSAGE_TYPE_TRANSPORT_SEND, | ||
685 | struct OutboundMessage, | ||
686 | NULL), | ||
687 | /* communication with communicators */ | ||
688 | GNUNET_MQ_hd_var_size (communicator_available, | ||
689 | GNUNET_MESSAGE_TYPE_TRANSPORT_NEW_COMMUNICATOR, | ||
690 | struct GNUNET_TRANSPORT_CommunicatorAvailableMessage, | ||
691 | NULL), | ||
692 | GNUNET_MQ_hd_var_size (add_address, | ||
693 | GNUNET_MESSAGE_TYPE_TRANSPORT_ADD_ADDRESS, | ||
694 | struct GNUNET_TRANSPORT_AddAddressMessage, | ||
695 | NULL), | ||
696 | GNUNET_MQ_hd_fixed_size (del_address, | ||
697 | GNUNET_MESSAGE_TYPE_TRANSPORT_DEL_ADDRESS, | ||
698 | struct GNUNET_TRANSPORT_DelAddressMessage, | ||
699 | NULL), | ||
700 | GNUNET_MQ_hd_var_size (incoming_msg, | ||
701 | GNUNET_MESSAGE_TYPE_TRANSPORT_INCOMING_MSG, | ||
702 | struct GNUNET_TRANSPORT_IncomingMessage, | ||
703 | NULL), | ||
704 | GNUNET_MQ_hd_var_size (add_queue_message, | ||
705 | GNUNET_MESSAGE_TYPE_TRANSPORT_QUEUE_SETUP, | ||
706 | struct GNUNET_TRANSPORT_AddQueueMessage, | ||
707 | NULL), | ||
708 | GNUNET_MQ_hd_fixed_size (del_queue_message, | ||
709 | GNUNET_MESSAGE_TYPE_TRANSPORT_QUEUE_TEARDOWN, | ||
710 | struct GNUNET_TRANSPORT_DelQueueMessage, | ||
711 | NULL), | ||
712 | GNUNET_MQ_hd_fixed_size (send_message_ack, | ||
713 | GNUNET_MESSAGE_TYPE_TRANSPORT_SEND_MSG_ACK, | ||
714 | struct GNUNET_TRANSPORT_SendMessageToAck, | ||
715 | NULL), | ||
716 | GNUNET_MQ_handler_end ()); | ||
717 | |||
718 | |||
719 | /* end of file gnunet-service-transport.c */ | ||
diff --git a/src/transport/transport.h b/src/transport/transport.h index e68536bcc..1b46213cf 100644 --- a/src/transport/transport.h +++ b/src/transport/transport.h | |||
@@ -11,7 +11,7 @@ | |||
11 | WITHOUT ANY WARRANTY; without even the implied warranty of | 11 | WITHOUT ANY WARRANTY; without even the implied warranty of |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
13 | Affero General Public License for more details. | 13 | Affero General Public License for more details. |
14 | 14 | ||
15 | You should have received a copy of the GNU Affero General Public License | 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/>. | 16 | along with this program. If not, see <http://www.gnu.org/licenses/>. |
17 | */ | 17 | */ |
@@ -94,7 +94,7 @@ struct StartMessage | |||
94 | 94 | ||
95 | /** | 95 | /** |
96 | * 0: no options | 96 | * 0: no options |
97 | * 1: The 'self' field should be checked | 97 | * 1: The @e self field should be checked |
98 | * 2: this client is interested in payload traffic | 98 | * 2: this client is interested in payload traffic |
99 | */ | 99 | */ |
100 | uint32_t options; | 100 | uint32_t options; |
@@ -404,6 +404,7 @@ struct ValidationIterateResponseMessage | |||
404 | struct GNUNET_TIME_AbsoluteNBO next_validation; | 404 | struct GNUNET_TIME_AbsoluteNBO next_validation; |
405 | }; | 405 | }; |
406 | 406 | ||
407 | |||
407 | /** | 408 | /** |
408 | * Message from the library to the transport service | 409 | * Message from the library to the transport service |
409 | * asking for binary addresses known for a peer. | 410 | * asking for binary addresses known for a peer. |
@@ -654,6 +655,22 @@ struct TransportPluginMonitorMessage | |||
654 | /* *********************** TNG messages ***************** */ | 655 | /* *********************** TNG messages ***************** */ |
655 | 656 | ||
656 | /** | 657 | /** |
658 | * Communicator goes online. Note which addresses it can | ||
659 | * work with. | ||
660 | */ | ||
661 | struct GNUNET_TRANSPORT_CommunicatorAvailableMessage | ||
662 | { | ||
663 | |||
664 | /** | ||
665 | * Type will be #GNUNET_MESSAGE_TYPE_TRANSPORT_NEW_COMMUNICATOR. | ||
666 | */ | ||
667 | struct GNUNET_MessageHeader header; | ||
668 | |||
669 | /* Followed by the address prefix of the communicator */ | ||
670 | }; | ||
671 | |||
672 | |||
673 | /** | ||
657 | * Add address to the list. | 674 | * Add address to the list. |
658 | */ | 675 | */ |
659 | struct GNUNET_TRANSPORT_AddAddressMessage | 676 | struct GNUNET_TRANSPORT_AddAddressMessage |
@@ -678,7 +695,7 @@ struct GNUNET_TRANSPORT_AddAddressMessage | |||
678 | * An `enum GNUNET_ATS_Network_Type` in NBO. | 695 | * An `enum GNUNET_ATS_Network_Type` in NBO. |
679 | */ | 696 | */ |
680 | uint32_t nt; | 697 | uint32_t nt; |
681 | 698 | ||
682 | /* followed by UTF-8 encoded, 0-terminated human-readable address */ | 699 | /* followed by UTF-8 encoded, 0-terminated human-readable address */ |
683 | }; | 700 | }; |
684 | 701 | ||
@@ -717,12 +734,12 @@ struct GNUNET_TRANSPORT_IncomingMessage | |||
717 | * Do we use flow control or not? | 734 | * Do we use flow control or not? |
718 | */ | 735 | */ |
719 | uint32_t fc_on GNUNET_PACKED; | 736 | uint32_t fc_on GNUNET_PACKED; |
720 | 737 | ||
721 | /** | 738 | /** |
722 | * 64-bit number to identify the matching ACK. | 739 | * 64-bit number to identify the matching ACK. |
723 | */ | 740 | */ |
724 | uint64_t fc_id GNUNET_PACKED; | 741 | uint64_t fc_id GNUNET_PACKED; |
725 | 742 | ||
726 | /** | 743 | /** |
727 | * Sender identifier. | 744 | * Sender identifier. |
728 | */ | 745 | */ |
@@ -748,12 +765,12 @@ struct GNUNET_TRANSPORT_IncomingMessageAck | |||
748 | * Reserved (0) | 765 | * Reserved (0) |
749 | */ | 766 | */ |
750 | uint32_t reserved GNUNET_PACKED; | 767 | uint32_t reserved GNUNET_PACKED; |
751 | 768 | ||
752 | /** | 769 | /** |
753 | * Which message is being ACKed? | 770 | * Which message is being ACKed? |
754 | */ | 771 | */ |
755 | uint64_t fc_id GNUNET_PACKED; | 772 | uint64_t fc_id GNUNET_PACKED; |
756 | 773 | ||
757 | /** | 774 | /** |
758 | * Sender identifier of the original message. | 775 | * Sender identifier of the original message. |
759 | */ | 776 | */ |
@@ -769,7 +786,7 @@ struct GNUNET_TRANSPORT_AddQueueMessage | |||
769 | { | 786 | { |
770 | 787 | ||
771 | /** | 788 | /** |
772 | * Type will be #GNUNET_MESSAGE_TYPE_TRANSPORT_ADD_QUEUE. | 789 | * Type will be #GNUNET_MESSAGE_TYPE_TRANSPORT_QUEUE_SETUP. |
773 | */ | 790 | */ |
774 | struct GNUNET_MessageHeader header; | 791 | struct GNUNET_MessageHeader header; |
775 | 792 | ||
@@ -787,7 +804,7 @@ struct GNUNET_TRANSPORT_AddQueueMessage | |||
787 | * An `enum GNUNET_ATS_Network_Type` in NBO. | 804 | * An `enum GNUNET_ATS_Network_Type` in NBO. |
788 | */ | 805 | */ |
789 | uint32_t nt; | 806 | uint32_t nt; |
790 | 807 | ||
791 | /* followed by UTF-8 encoded, 0-terminated human-readable address */ | 808 | /* followed by UTF-8 encoded, 0-terminated human-readable address */ |
792 | }; | 809 | }; |
793 | 810 | ||
@@ -799,7 +816,7 @@ struct GNUNET_TRANSPORT_DelQueueMessage | |||
799 | { | 816 | { |
800 | 817 | ||
801 | /** | 818 | /** |
802 | * Type will be #GNUNET_MESSAGE_TYPE_TRANSPORT_DEL_QUEUE. | 819 | * Type will be #GNUNET_MESSAGE_TYPE_TRANSPORT_QUEUE_TEARDOWN. |
803 | */ | 820 | */ |
804 | struct GNUNET_MessageHeader header; | 821 | struct GNUNET_MessageHeader header; |
805 | 822 | ||
@@ -828,9 +845,9 @@ struct GNUNET_TRANSPORT_CreateQueue | |||
828 | struct GNUNET_MessageHeader header; | 845 | struct GNUNET_MessageHeader header; |
829 | 846 | ||
830 | /** | 847 | /** |
831 | * Always zero. | 848 | * Unique ID for the request. |
832 | */ | 849 | */ |
833 | uint32_t reserved GNUNET_PACKED; | 850 | uint32_t request_id GNUNET_PACKED; |
834 | 851 | ||
835 | /** | 852 | /** |
836 | * Receiver that can be addressed via the queue. | 853 | * Receiver that can be addressed via the queue. |
@@ -842,6 +859,24 @@ struct GNUNET_TRANSPORT_CreateQueue | |||
842 | 859 | ||
843 | 860 | ||
844 | /** | 861 | /** |
862 | * Transport tells communicator that it wants a new queue. | ||
863 | */ | ||
864 | struct GNUNET_TRANSPORT_CreateQueueResponse | ||
865 | { | ||
866 | |||
867 | /** | ||
868 | * Type will be #GNUNET_MESSAGE_TYPE_TRANSPORT_QUEUE_CREATE_OK or #GNUNET_MESSAGE_TYPE_TRANSPORT_QUEUE_CREATE_FAIL. | ||
869 | */ | ||
870 | struct GNUNET_MessageHeader header; | ||
871 | |||
872 | /** | ||
873 | * Unique ID for the request. | ||
874 | */ | ||
875 | uint32_t request_id GNUNET_PACKED; | ||
876 | }; | ||
877 | |||
878 | |||
879 | /** | ||
845 | * Inform communicator about transport's desire to send a message. | 880 | * Inform communicator about transport's desire to send a message. |
846 | */ | 881 | */ |
847 | struct GNUNET_TRANSPORT_SendMessageTo | 882 | struct GNUNET_TRANSPORT_SendMessageTo |
@@ -861,7 +896,7 @@ struct GNUNET_TRANSPORT_SendMessageTo | |||
861 | * Message ID, used for flow control. | 896 | * Message ID, used for flow control. |
862 | */ | 897 | */ |
863 | uint64_t mid GNUNET_PACKED; | 898 | uint64_t mid GNUNET_PACKED; |
864 | 899 | ||
865 | /** | 900 | /** |
866 | * Receiver identifier. | 901 | * Receiver identifier. |
867 | */ | 902 | */ |
@@ -891,7 +926,7 @@ struct GNUNET_TRANSPORT_SendMessageToAck | |||
891 | * Message ID of the original message. | 926 | * Message ID of the original message. |
892 | */ | 927 | */ |
893 | uint64_t mid GNUNET_PACKED; | 928 | uint64_t mid GNUNET_PACKED; |
894 | 929 | ||
895 | /** | 930 | /** |
896 | * Receiver identifier. | 931 | * Receiver identifier. |
897 | */ | 932 | */ |
diff --git a/src/transport/transport_api2_communication.c b/src/transport/transport_api2_communication.c index d446516bd..3a68c6eba 100644 --- a/src/transport/transport_api2_communication.c +++ b/src/transport/transport_api2_communication.c | |||
@@ -90,6 +90,11 @@ struct AckPending | |||
90 | struct AckPending *prev; | 90 | struct AckPending *prev; |
91 | 91 | ||
92 | /** | 92 | /** |
93 | * Communicator this entry belongs to. | ||
94 | */ | ||
95 | struct GNUNET_TRANSPORT_CommunicatorHandle *ch; | ||
96 | |||
97 | /** | ||
93 | * Which peer is this about? | 98 | * Which peer is this about? |
94 | */ | 99 | */ |
95 | struct GNUNET_PeerIdentity receiver; | 100 | struct GNUNET_PeerIdentity receiver; |
@@ -134,17 +139,17 @@ struct GNUNET_TRANSPORT_CommunicatorHandle | |||
134 | /** | 139 | /** |
135 | * DLL of messages awaiting transmission confirmation (ack). | 140 | * DLL of messages awaiting transmission confirmation (ack). |
136 | */ | 141 | */ |
137 | struct AckPending *ac_tail; | 142 | struct AckPending *ap_tail; |
138 | 143 | ||
139 | /** | 144 | /** |
140 | * DLL of queues we offer. | 145 | * DLL of queues we offer. |
141 | */ | 146 | */ |
142 | struct QueueHandle *queue_head; | 147 | struct GNUNET_TRANSPORT_QueueHandle *queue_head; |
143 | 148 | ||
144 | /** | 149 | /** |
145 | * DLL of queues we offer. | 150 | * DLL of queues we offer. |
146 | */ | 151 | */ |
147 | struct QueueHandle *queue_tail; | 152 | struct GNUNET_TRANSPORT_QueueHandle *queue_tail; |
148 | 153 | ||
149 | /** | 154 | /** |
150 | * Our configuration. | 155 | * Our configuration. |
@@ -152,9 +157,14 @@ struct GNUNET_TRANSPORT_CommunicatorHandle | |||
152 | const struct GNUNET_CONFIGURATION_Handle *cfg; | 157 | const struct GNUNET_CONFIGURATION_Handle *cfg; |
153 | 158 | ||
154 | /** | 159 | /** |
155 | * Name of the communicator. | 160 | * Config section to use. |
161 | */ | ||
162 | const char *config_section; | ||
163 | |||
164 | /** | ||
165 | * Address prefix to use. | ||
156 | */ | 166 | */ |
157 | const char *name; | 167 | const char *addr_prefix; |
158 | 168 | ||
159 | /** | 169 | /** |
160 | * Function to call when the transport service wants us to initiate | 170 | * Function to call when the transport service wants us to initiate |
@@ -168,6 +178,11 @@ struct GNUNET_TRANSPORT_CommunicatorHandle | |||
168 | void *mq_init_cls; | 178 | void *mq_init_cls; |
169 | 179 | ||
170 | /** | 180 | /** |
181 | * Queue to talk to the transport service. | ||
182 | */ | ||
183 | struct GNUNET_MQ_Handle *mq; | ||
184 | |||
185 | /** | ||
171 | * Maximum permissable queue length. | 186 | * Maximum permissable queue length. |
172 | */ | 187 | */ |
173 | unsigned long long max_queue_length; | 188 | unsigned long long max_queue_length; |
@@ -202,6 +217,17 @@ struct GNUNET_TRANSPORT_CommunicatorHandle | |||
202 | */ | 217 | */ |
203 | struct GNUNET_TRANSPORT_QueueHandle | 218 | struct GNUNET_TRANSPORT_QueueHandle |
204 | { | 219 | { |
220 | |||
221 | /** | ||
222 | * Kept in a DLL. | ||
223 | */ | ||
224 | struct GNUNET_TRANSPORT_QueueHandle *next; | ||
225 | |||
226 | /** | ||
227 | * Kept in a DLL. | ||
228 | */ | ||
229 | struct GNUNET_TRANSPORT_QueueHandle *prev; | ||
230 | |||
205 | /** | 231 | /** |
206 | * Handle this queue belongs to. | 232 | * Handle this queue belongs to. |
207 | */ | 233 | */ |
@@ -308,7 +334,7 @@ send_add_address (struct GNUNET_TRANSPORT_AddressIdentifier *ai) | |||
308 | env = GNUNET_MQ_msg_extra (aam, | 334 | env = GNUNET_MQ_msg_extra (aam, |
309 | strlen (ai->address) + 1, | 335 | strlen (ai->address) + 1, |
310 | GNUNET_MESSAGE_TYPE_TRANSPORT_ADD_ADDRESS); | 336 | GNUNET_MESSAGE_TYPE_TRANSPORT_ADD_ADDRESS); |
311 | aam->expiration = GNUNET_TIME_relative_to_nbo (ai->expiration); | 337 | aam->expiration = GNUNET_TIME_relative_hton (ai->expiration); |
312 | aam->nt = htonl ((uint32_t) ai->nt); | 338 | aam->nt = htonl ((uint32_t) ai->nt); |
313 | memcpy (&aam[1], | 339 | memcpy (&aam[1], |
314 | ai->address, | 340 | ai->address, |
@@ -334,7 +360,7 @@ send_del_address (struct GNUNET_TRANSPORT_AddressIdentifier *ai) | |||
334 | return; | 360 | return; |
335 | env = GNUNET_MQ_msg (dam, | 361 | env = GNUNET_MQ_msg (dam, |
336 | GNUNET_MESSAGE_TYPE_TRANSPORT_DEL_ADDRESS); | 362 | GNUNET_MESSAGE_TYPE_TRANSPORT_DEL_ADDRESS); |
337 | dam.aid = htonl (ai->aid); | 363 | dam->aid = htonl (ai->aid); |
338 | GNUNET_MQ_send (ai->ch->mq, | 364 | GNUNET_MQ_send (ai->ch->mq, |
339 | env); | 365 | env); |
340 | } | 366 | } |
@@ -352,18 +378,18 @@ send_add_queue (struct GNUNET_TRANSPORT_QueueHandle *qh) | |||
352 | struct GNUNET_MQ_Envelope *env; | 378 | struct GNUNET_MQ_Envelope *env; |
353 | struct GNUNET_TRANSPORT_AddQueueMessage *aqm; | 379 | struct GNUNET_TRANSPORT_AddQueueMessage *aqm; |
354 | 380 | ||
355 | if (NULL == ai->ch->mq) | 381 | if (NULL == qh->ch->mq) |
356 | return; | 382 | return; |
357 | env = GNUNET_MQ_msg_extra (aqm, | 383 | env = GNUNET_MQ_msg_extra (aqm, |
358 | strlen (ai->address) + 1, | 384 | strlen (qh->address) + 1, |
359 | GNUNET_MESSAGE_TYPE_TRANSPORT_ADD_QUEUE); | 385 | GNUNET_MESSAGE_TYPE_TRANSPORT_QUEUE_SETUP); |
360 | aqm.receiver = qh->peer; | 386 | aqm->receiver = qh->peer; |
361 | aqm.nt = htonl ((uint32_t) qh->nt); | 387 | aqm->nt = htonl ((uint32_t) qh->nt); |
362 | aqm.qid = htonl (qh->qid); | 388 | aqm->qid = htonl (qh->queue_id); |
363 | memcpy (&aqm[1], | 389 | memcpy (&aqm[1], |
364 | ai->address, | 390 | qh->address, |
365 | strlen (ai->address) + 1); | 391 | strlen (qh->address) + 1); |
366 | GNUNET_MQ_send (ai->ch->mq, | 392 | GNUNET_MQ_send (qh->ch->mq, |
367 | env); | 393 | env); |
368 | } | 394 | } |
369 | 395 | ||
@@ -380,13 +406,13 @@ send_del_queue (struct GNUNET_TRANSPORT_QueueHandle *qh) | |||
380 | struct GNUNET_MQ_Envelope *env; | 406 | struct GNUNET_MQ_Envelope *env; |
381 | struct GNUNET_TRANSPORT_DelQueueMessage *dqm; | 407 | struct GNUNET_TRANSPORT_DelQueueMessage *dqm; |
382 | 408 | ||
383 | if (NULL == ai->ch->mq) | 409 | if (NULL == qh->ch->mq) |
384 | return; | 410 | return; |
385 | env = GNUNET_MQ_msg (dqm, | 411 | env = GNUNET_MQ_msg (dqm, |
386 | GNUNET_MESSAGE_TYPE_TRANSPORT_DEL_QUEUE); | 412 | GNUNET_MESSAGE_TYPE_TRANSPORT_QUEUE_TEARDOWN); |
387 | dqm.qid = htonl (qh->qid); | 413 | dqm->qid = htonl (qh->queue_id); |
388 | dqm.receiver = qh->peer; | 414 | dqm->receiver = qh->peer; |
389 | GNUNET_MQ_send (ai->ch->mq, | 415 | GNUNET_MQ_send (qh->ch->mq, |
390 | env); | 416 | env); |
391 | } | 417 | } |
392 | 418 | ||
@@ -444,7 +470,8 @@ error_handler (void *cls, | |||
444 | struct GNUNET_TRANSPORT_CommunicatorHandle *ch = cls; | 470 | struct GNUNET_TRANSPORT_CommunicatorHandle *ch = cls; |
445 | 471 | ||
446 | GNUNET_log (GNUNET_ERROR_TYPE_INFO, | 472 | GNUNET_log (GNUNET_ERROR_TYPE_INFO, |
447 | "MQ failure, reconnecting to transport service.\n"); | 473 | "MQ failure %d, reconnecting to transport service.\n", |
474 | error); | ||
448 | disconnect (ch); | 475 | disconnect (ch); |
449 | /* TODO: maybe do this with exponential backoff/delay */ | 476 | /* TODO: maybe do this with exponential backoff/delay */ |
450 | reconnect (ch); | 477 | reconnect (ch); |
@@ -460,7 +487,7 @@ error_handler (void *cls, | |||
460 | */ | 487 | */ |
461 | static void | 488 | static void |
462 | handle_incoming_ack (void *cls, | 489 | handle_incoming_ack (void *cls, |
463 | struct GNUNET_TRANSPORT_IncomingMessageAck *incoming_ack) | 490 | const struct GNUNET_TRANSPORT_IncomingMessageAck *incoming_ack) |
464 | { | 491 | { |
465 | struct GNUNET_TRANSPORT_CommunicatorHandle *ch = cls; | 492 | struct GNUNET_TRANSPORT_CommunicatorHandle *ch = cls; |
466 | 493 | ||
@@ -470,7 +497,7 @@ handle_incoming_ack (void *cls, | |||
470 | { | 497 | { |
471 | if ( (fc->id == incoming_ack->fc_id) && | 498 | if ( (fc->id == incoming_ack->fc_id) && |
472 | (0 == memcmp (&fc->sender, | 499 | (0 == memcmp (&fc->sender, |
473 | incoming_ack->sender, | 500 | &incoming_ack->sender, |
474 | sizeof (struct GNUNET_PeerIdentity))) ) | 501 | sizeof (struct GNUNET_PeerIdentity))) ) |
475 | { | 502 | { |
476 | GNUNET_CONTAINER_DLL_remove (ch->fc_head, | 503 | GNUNET_CONTAINER_DLL_remove (ch->fc_head, |
@@ -499,11 +526,12 @@ handle_incoming_ack (void *cls, | |||
499 | */ | 526 | */ |
500 | static int | 527 | static int |
501 | check_create_queue (void *cls, | 528 | check_create_queue (void *cls, |
502 | struct GNUNET_TRANSPORT_CreateQueue *cq) | 529 | const struct GNUNET_TRANSPORT_CreateQueue *cq) |
503 | { | 530 | { |
504 | uint16_t len = ntohs (cq->header.size) - sizeof (*cq); | 531 | uint16_t len = ntohs (cq->header.size) - sizeof (*cq); |
505 | const char *addr = (const char *) &cq[1]; | 532 | const char *addr = (const char *) &cq[1]; |
506 | 533 | ||
534 | (void) cls; | ||
507 | if ( (0 == len) || | 535 | if ( (0 == len) || |
508 | ('\0' != addr[len-1]) ) | 536 | ('\0' != addr[len-1]) ) |
509 | { | 537 | { |
@@ -522,11 +550,13 @@ check_create_queue (void *cls, | |||
522 | */ | 550 | */ |
523 | static void | 551 | static void |
524 | handle_create_queue (void *cls, | 552 | handle_create_queue (void *cls, |
525 | struct GNUNET_TRANSPORT_CreateQueue *cq) | 553 | const struct GNUNET_TRANSPORT_CreateQueue *cq) |
526 | { | 554 | { |
527 | struct GNUNET_TRANSPORT_CommunicatorHandle *ch = cls; | 555 | struct GNUNET_TRANSPORT_CommunicatorHandle *ch = cls; |
528 | const char *addr = (const char *) &cq[1]; | 556 | const char *addr = (const char *) &cq[1]; |
529 | 557 | struct GNUNET_TRANSPORT_CreateQueueResponse *cqr; | |
558 | struct GNUNET_MQ_Envelope *env; | ||
559 | |||
530 | if (GNUNET_OK != | 560 | if (GNUNET_OK != |
531 | ch->mq_init (ch->mq_init_cls, | 561 | ch->mq_init (ch->mq_init_cls, |
532 | &cq->receiver, | 562 | &cq->receiver, |
@@ -535,8 +565,17 @@ handle_create_queue (void *cls, | |||
535 | GNUNET_log (GNUNET_ERROR_TYPE_ERROR, | 565 | GNUNET_log (GNUNET_ERROR_TYPE_ERROR, |
536 | "Address `%s' invalid for this communicator\n", | 566 | "Address `%s' invalid for this communicator\n", |
537 | addr); | 567 | addr); |
538 | // TODO: do we notify the transport!? | 568 | env = GNUNET_MQ_msg (cqr, |
569 | GNUNET_MESSAGE_TYPE_TRANSPORT_QUEUE_CREATE_FAIL); | ||
539 | } | 570 | } |
571 | else | ||
572 | { | ||
573 | env = GNUNET_MQ_msg (cqr, | ||
574 | GNUNET_MESSAGE_TYPE_TRANSPORT_QUEUE_CREATE_OK); | ||
575 | } | ||
576 | cqr->request_id = cq->request_id; | ||
577 | GNUNET_MQ_send (ch->mq, | ||
578 | env); | ||
540 | } | 579 | } |
541 | 580 | ||
542 | 581 | ||
@@ -550,11 +589,12 @@ handle_create_queue (void *cls, | |||
550 | */ | 589 | */ |
551 | static int | 590 | static int |
552 | check_send_msg (void *cls, | 591 | check_send_msg (void *cls, |
553 | struct GNUNET_TRANSPORT_SendMessageTo *smt) | 592 | const struct GNUNET_TRANSPORT_SendMessageTo *smt) |
554 | { | 593 | { |
555 | uint16_t len = ntohs (smt->header.size) - sizeof (*smt); | 594 | uint16_t len = ntohs (smt->header.size) - sizeof (*smt); |
556 | const struct GNUNET_MessageHeader *mh = (const struct GNUNET_MessageHeader *) &smt[1]; | 595 | const struct GNUNET_MessageHeader *mh = (const struct GNUNET_MessageHeader *) &smt[1]; |
557 | 596 | ||
597 | (void) cls; | ||
558 | if (ntohs (mh->size) != len) | 598 | if (ntohs (mh->size) != len) |
559 | { | 599 | { |
560 | GNUNET_break (0); | 600 | GNUNET_break (0); |
@@ -584,9 +624,9 @@ send_ack (struct GNUNET_TRANSPORT_CommunicatorHandle *ch, | |||
584 | 624 | ||
585 | env = GNUNET_MQ_msg (ack, | 625 | env = GNUNET_MQ_msg (ack, |
586 | GNUNET_MESSAGE_TYPE_TRANSPORT_SEND_MSG_ACK); | 626 | GNUNET_MESSAGE_TYPE_TRANSPORT_SEND_MSG_ACK); |
587 | ack->status = htonl (GNUNET_OK); | 627 | ack->status = htonl (status); |
588 | ack->mid = ap->mid; | 628 | ack->mid = mid; |
589 | ack->receiver = ap->receiver; | 629 | ack->receiver = *receiver; |
590 | GNUNET_MQ_send (ch->mq, | 630 | GNUNET_MQ_send (ch->mq, |
591 | env); | 631 | env); |
592 | } | 632 | } |
@@ -623,18 +663,18 @@ send_ack_cb (void *cls) | |||
623 | */ | 663 | */ |
624 | static void | 664 | static void |
625 | handle_send_msg (void *cls, | 665 | handle_send_msg (void *cls, |
626 | struct GNUNET_TRANSPORT_SendMessageTo *smt) | 666 | const struct GNUNET_TRANSPORT_SendMessageTo *smt) |
627 | { | 667 | { |
628 | struct GNUNET_TRANSPORT_CommunicatorHandle *ch = cls; | 668 | struct GNUNET_TRANSPORT_CommunicatorHandle *ch = cls; |
629 | const struct GNUNET_MessageHeader *mh; | 669 | const struct GNUNET_MessageHeader *mh; |
630 | struct GNUNET_MQ_Envelope *env; | 670 | struct GNUNET_MQ_Envelope *env; |
631 | struct AckPending *ap; | 671 | struct AckPending *ap; |
632 | struct QueueHandle *qh; | 672 | struct GNUNET_TRANSPORT_QueueHandle *qh; |
633 | 673 | ||
634 | for (qh = ch->queue_head;NULL != qh; qh = qh->next) | 674 | for (qh = ch->queue_head;NULL != qh; qh = qh->next) |
635 | if ( (qh->queue_id == smt->qid) && | 675 | if ( (qh->queue_id == smt->qid) && |
636 | (0 == memcmp (&qh->peer, | 676 | (0 == memcmp (&qh->peer, |
637 | &smt->target, | 677 | &smt->receiver, |
638 | sizeof (struct GNUNET_PeerIdentity))) ) | 678 | sizeof (struct GNUNET_PeerIdentity))) ) |
639 | break; | 679 | break; |
640 | if (NULL == qh) | 680 | if (NULL == qh) |
@@ -653,7 +693,7 @@ handle_send_msg (void *cls, | |||
653 | ap->receiver = smt->receiver; | 693 | ap->receiver = smt->receiver; |
654 | ap->mid = smt->mid; | 694 | ap->mid = smt->mid; |
655 | GNUNET_CONTAINER_DLL_insert (ch->ap_head, | 695 | GNUNET_CONTAINER_DLL_insert (ch->ap_head, |
656 | cp->ap_tail, | 696 | ch->ap_tail, |
657 | ap); | 697 | ap); |
658 | mh = (const struct GNUNET_MessageHeader *) &smt[1]; | 698 | mh = (const struct GNUNET_MessageHeader *) &smt[1]; |
659 | env = GNUNET_MQ_msg_copy (mh); | 699 | env = GNUNET_MQ_msg_copy (mh); |
@@ -679,7 +719,7 @@ reconnect (struct GNUNET_TRANSPORT_CommunicatorHandle *ch) | |||
679 | struct GNUNET_TRANSPORT_IncomingMessageAck, | 719 | struct GNUNET_TRANSPORT_IncomingMessageAck, |
680 | ch), | 720 | ch), |
681 | GNUNET_MQ_hd_var_size (create_queue, | 721 | GNUNET_MQ_hd_var_size (create_queue, |
682 | GNUNET_MESSAGE_TYPE_TRANSPORT_CREATE_QUEUE, | 722 | GNUNET_MESSAGE_TYPE_TRANSPORT_QUEUE_CREATE, |
683 | struct GNUNET_TRANSPORT_CreateQueue, | 723 | struct GNUNET_TRANSPORT_CreateQueue, |
684 | ch), | 724 | ch), |
685 | GNUNET_MQ_hd_var_size (send_msg, | 725 | GNUNET_MQ_hd_var_size (send_msg, |
@@ -688,12 +728,24 @@ reconnect (struct GNUNET_TRANSPORT_CommunicatorHandle *ch) | |||
688 | ch), | 728 | ch), |
689 | GNUNET_MQ_handler_end() | 729 | GNUNET_MQ_handler_end() |
690 | }; | 730 | }; |
731 | struct GNUNET_TRANSPORT_CommunicatorAvailableMessage *cam; | ||
732 | struct GNUNET_MQ_Envelope *env; | ||
691 | 733 | ||
692 | ch->mq = GNUNET_CLIENT_connect (cfg, | 734 | ch->mq = GNUNET_CLIENT_connect (ch->cfg, |
693 | "transport", | 735 | "transport", |
694 | handlers, | 736 | handlers, |
695 | &error_handler, | 737 | &error_handler, |
696 | ch); | 738 | ch); |
739 | if (NULL == ch->mq) | ||
740 | return; | ||
741 | env = GNUNET_MQ_msg_extra (cam, | ||
742 | strlen (ch->addr_prefix) + 1, | ||
743 | GNUNET_MESSAGE_TYPE_TRANSPORT_NEW_COMMUNICATOR); | ||
744 | memcpy (&cam[1], | ||
745 | ch->addr_prefix, | ||
746 | strlen (ch->addr_prefix) + 1); | ||
747 | GNUNET_MQ_send (ch->mq, | ||
748 | env); | ||
697 | for (struct GNUNET_TRANSPORT_AddressIdentifier *ai = ch->ai_head; | 749 | for (struct GNUNET_TRANSPORT_AddressIdentifier *ai = ch->ai_head; |
698 | NULL != ai; | 750 | NULL != ai; |
699 | ai = ai->next) | 751 | ai = ai->next) |
@@ -709,7 +761,9 @@ reconnect (struct GNUNET_TRANSPORT_CommunicatorHandle *ch) | |||
709 | * Connect to the transport service. | 761 | * Connect to the transport service. |
710 | * | 762 | * |
711 | * @param cfg configuration to use | 763 | * @param cfg configuration to use |
712 | * @param name name of the communicator that is connecting | 764 | * @param config_section section of the configuration to use for options |
765 | * @param addr_prefix address prefix for addresses supported by this | ||
766 | * communicator, could be NULL for incoming-only communicators | ||
713 | * @param mtu maximum message size supported by communicator, 0 if | 767 | * @param mtu maximum message size supported by communicator, 0 if |
714 | * sending is not supported, SIZE_MAX for no MTU | 768 | * sending is not supported, SIZE_MAX for no MTU |
715 | * @param mq_init function to call to initialize a message queue given | 769 | * @param mq_init function to call to initialize a message queue given |
@@ -720,7 +774,8 @@ reconnect (struct GNUNET_TRANSPORT_CommunicatorHandle *ch) | |||
720 | */ | 774 | */ |
721 | struct GNUNET_TRANSPORT_CommunicatorHandle * | 775 | struct GNUNET_TRANSPORT_CommunicatorHandle * |
722 | GNUNET_TRANSPORT_communicator_connect (const struct GNUNET_CONFIGURATION_Handle *cfg, | 776 | GNUNET_TRANSPORT_communicator_connect (const struct GNUNET_CONFIGURATION_Handle *cfg, |
723 | const char *name, | 777 | const char *config_section, |
778 | const char *addr_prefix, | ||
724 | size_t mtu, | 779 | size_t mtu, |
725 | GNUNET_TRANSPORT_CommunicatorMqInit mq_init, | 780 | GNUNET_TRANSPORT_CommunicatorMqInit mq_init, |
726 | void *mq_init_cls) | 781 | void *mq_init_cls) |
@@ -729,14 +784,15 @@ GNUNET_TRANSPORT_communicator_connect (const struct GNUNET_CONFIGURATION_Handle | |||
729 | 784 | ||
730 | ch = GNUNET_new (struct GNUNET_TRANSPORT_CommunicatorHandle); | 785 | ch = GNUNET_new (struct GNUNET_TRANSPORT_CommunicatorHandle); |
731 | ch->cfg = cfg; | 786 | ch->cfg = cfg; |
732 | ch->name = name; | 787 | ch->config_section = config_section; |
788 | ch->addr_prefix = addr_prefix; | ||
733 | ch->mtu = mtu; | 789 | ch->mtu = mtu; |
734 | ch->mq_init = mq_init; | 790 | ch->mq_init = mq_init; |
735 | ch->mq_init_cls = mq_init_cls; | 791 | ch->mq_init_cls = mq_init_cls; |
736 | reconnect (ch); | 792 | reconnect (ch); |
737 | if (GNUNET_OK != | 793 | if (GNUNET_OK != |
738 | GNUNET_CONFIGURATION_get_value_number (cfg, | 794 | GNUNET_CONFIGURATION_get_value_number (cfg, |
739 | name, | 795 | config_section, |
740 | "MAX_QUEUE_LENGTH", | 796 | "MAX_QUEUE_LENGTH", |
741 | &ch->max_queue_length)) | 797 | &ch->max_queue_length)) |
742 | ch->max_queue_length = DEFAULT_MAX_QUEUE_LENGTH; | 798 | ch->max_queue_length = DEFAULT_MAX_QUEUE_LENGTH; |
@@ -798,32 +854,15 @@ GNUNET_TRANSPORT_communicator_receive (struct GNUNET_TRANSPORT_CommunicatorHandl | |||
798 | struct GNUNET_TRANSPORT_IncomingMessage *im; | 854 | struct GNUNET_TRANSPORT_IncomingMessage *im; |
799 | uint16_t msize; | 855 | uint16_t msize; |
800 | 856 | ||
801 | if (NULL == ai->ch->mq) | 857 | if (NULL == ch->mq) |
802 | return GNUNET_SYSERR; | 858 | return GNUNET_SYSERR; |
803 | if (NULL != cb) | 859 | if ( (NULL == cb) && |
860 | (GNUNET_MQ_get_length (ch->mq) >= ch->max_queue_length) ) | ||
804 | { | 861 | { |
805 | struct FlowControl *fc; | 862 | GNUNET_log (GNUNET_ERROR_TYPE_WARNING, |
806 | 863 | "Dropping message: transprot is too slow, queue length %llu exceeded\n", | |
807 | im->fc_on = htonl (GNUNET_YES); | 864 | ch->max_queue_length); |
808 | im->fc_id = ai->ch->fc_gen++; | 865 | return GNUNET_NO; |
809 | fc = GNUNET_new (struct FlowControl); | ||
810 | fc->sender = *sender; | ||
811 | fc->id = im->fc_id; | ||
812 | fc->cb = cb; | ||
813 | fc->cb_cls = cb_cls; | ||
814 | GNUNET_CONTAINER_DLL_insert (ch->fc_head, | ||
815 | ch->fc_tail, | ||
816 | fc); | ||
817 | } | ||
818 | else | ||
819 | { | ||
820 | if (GNUNET_MQ_get_length (ch->mq) >= ch->max_queue_length) | ||
821 | { | ||
822 | GNUNET_log (GNUNET_ERROR_TYPE_WARNING, | ||
823 | "Dropping message: transprot is too slow, queue length %u exceeded\n", | ||
824 | ch->max_queue_length); | ||
825 | return GNUNET_NO; | ||
826 | } | ||
827 | } | 866 | } |
828 | 867 | ||
829 | msize = ntohs (msg->size); | 868 | msize = ntohs (msg->size); |
@@ -839,7 +878,22 @@ GNUNET_TRANSPORT_communicator_receive (struct GNUNET_TRANSPORT_CommunicatorHandl | |||
839 | memcpy (&im[1], | 878 | memcpy (&im[1], |
840 | msg, | 879 | msg, |
841 | msize); | 880 | msize); |
842 | GNUNET_MQ_send (ai->ch->mq, | 881 | if (NULL != cb) |
882 | { | ||
883 | struct FlowControl *fc; | ||
884 | |||
885 | im->fc_on = htonl (GNUNET_YES); | ||
886 | im->fc_id = ch->fc_gen++; | ||
887 | fc = GNUNET_new (struct FlowControl); | ||
888 | fc->sender = *sender; | ||
889 | fc->id = im->fc_id; | ||
890 | fc->cb = cb; | ||
891 | fc->cb_cls = cb_cls; | ||
892 | GNUNET_CONTAINER_DLL_insert (ch->fc_head, | ||
893 | ch->fc_tail, | ||
894 | fc); | ||
895 | } | ||
896 | GNUNET_MQ_send (ch->mq, | ||
843 | env); | 897 | env); |
844 | return GNUNET_OK; | 898 | return GNUNET_OK; |
845 | } | 899 | } |
@@ -927,9 +981,9 @@ GNUNET_TRANSPORT_communicator_address_add (struct GNUNET_TRANSPORT_CommunicatorH | |||
927 | ai->address = GNUNET_strdup (address); | 981 | ai->address = GNUNET_strdup (address); |
928 | ai->nt = nt; | 982 | ai->nt = nt; |
929 | ai->expiration = expiration; | 983 | ai->expiration = expiration; |
930 | ai->aid = handle->aid_gen++; | 984 | ai->aid = ch->aid_gen++; |
931 | GNUNET_CONTAINER_DLL_insert (handle->ai_head, | 985 | GNUNET_CONTAINER_DLL_insert (ch->ai_head, |
932 | handle->ai_tail, | 986 | ch->ai_tail, |
933 | ai); | 987 | ai); |
934 | send_add_address (ai); | 988 | send_add_address (ai); |
935 | return ai; | 989 | return ai; |