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author | Matthias Wachs <wachs@net.in.tum.de> | 2012-02-13 17:15:52 +0000 |
---|---|---|
committer | Matthias Wachs <wachs@net.in.tum.de> | 2012-02-13 17:15:52 +0000 |
commit | cee04ec80653f8fecf198d8fe14dc73f84b53524 (patch) | |
tree | aeca1509c9ccd350fc25eb998f25a3c5427107b0 | |
parent | 3b2be11385b8b4626b86d4438008eb0508f856fa (diff) | |
download | gnunet-cee04ec80653f8fecf198d8fe14dc73f84b53524.tar.gz gnunet-cee04ec80653f8fecf198d8fe14dc73f84b53524.zip |
- coverity errors
-rw-r--r-- | src/ats/gnunet-service-ats_addresses_mlp.c | 2 | ||||
-rw-r--r-- | src/include/gnunet_transport_service.h | 2 | ||||
-rw-r--r-- | src/transport/gnunet-service-transport_neighbours.c | 4 | ||||
-rw-r--r-- | src/transport/gnunet-service-transport_neighbours.h | 6 | ||||
-rw-r--r-- | src/transport/plugin_transport_tcp.c | 4 | ||||
-rw-r--r-- | src/transport/plugin_transport_udp.c | 2 | ||||
-rw-r--r-- | src/transport/plugin_transport_udp_new.c | 2054 | ||||
-rw-r--r-- | src/transport/plugin_transport_unix.c | 1 | ||||
-rw-r--r-- | src/transport/transport-testing.c | 23 | ||||
-rw-r--r-- | src/transport/transport-testing.h | 8 |
10 files changed, 24 insertions, 2082 deletions
diff --git a/src/ats/gnunet-service-ats_addresses_mlp.c b/src/ats/gnunet-service-ats_addresses_mlp.c index cdda9d790..9850bc2a3 100644 --- a/src/ats/gnunet-service-ats_addresses_mlp.c +++ b/src/ats/gnunet-service-ats_addresses_mlp.c | |||
@@ -1404,7 +1404,7 @@ void | |||
1404 | GAS_mlp_address_change_preference (struct GAS_MLP_Handle *mlp, | 1404 | GAS_mlp_address_change_preference (struct GAS_MLP_Handle *mlp, |
1405 | const struct GNUNET_PeerIdentity *peer, | 1405 | const struct GNUNET_PeerIdentity *peer, |
1406 | enum GNUNET_ATS_PreferenceKind kind, | 1406 | enum GNUNET_ATS_PreferenceKind kind, |
1407 | float ) | 1407 | float score) |
1408 | { | 1408 | { |
1409 | GNUNET_STATISTICS_update (mlp->stats,"# LP address preference changes", 1, GNUNET_NO); | 1409 | GNUNET_STATISTICS_update (mlp->stats,"# LP address preference changes", 1, GNUNET_NO); |
1410 | 1410 | ||
diff --git a/src/include/gnunet_transport_service.h b/src/include/gnunet_transport_service.h index 5889b4a72..5c939a009 100644 --- a/src/include/gnunet_transport_service.h +++ b/src/include/gnunet_transport_service.h | |||
@@ -285,10 +285,8 @@ struct GNUNET_TRANSPORT_AddressToStringContext; | |||
285 | * | 285 | * |
286 | * @param cfg configuration to use | 286 | * @param cfg configuration to use |
287 | * @param address address to convert (binary format) | 287 | * @param address address to convert (binary format) |
288 | * @param addressLen number of bytes in address | ||
289 | * @param numeric should (IP) addresses be displayed in numeric form | 288 | * @param numeric should (IP) addresses be displayed in numeric form |
290 | * (otherwise do reverse DNS lookup) | 289 | * (otherwise do reverse DNS lookup) |
291 | * @param nameTrans name of the transport to which the address belongs | ||
292 | * @param timeout how long is the lookup allowed to take at most | 290 | * @param timeout how long is the lookup allowed to take at most |
293 | * @param aluc function to call with the results | 291 | * @param aluc function to call with the results |
294 | * @param aluc_cls closure for aluc | 292 | * @param aluc_cls closure for aluc |
diff --git a/src/transport/gnunet-service-transport_neighbours.c b/src/transport/gnunet-service-transport_neighbours.c index 6c072130b..c9af3e36b 100644 --- a/src/transport/gnunet-service-transport_neighbours.c +++ b/src/transport/gnunet-service-transport_neighbours.c | |||
@@ -1353,7 +1353,7 @@ send_connect_ack_continuation (void *cls, | |||
1353 | 1353 | ||
1354 | /** | 1354 | /** |
1355 | * For an existing neighbour record, set the active connection to | 1355 | * For an existing neighbour record, set the active connection to |
1356 | * the given address. | 1356 | * use the given address. |
1357 | * | 1357 | * |
1358 | * @param peer identity of the peer to switch the address for | 1358 | * @param peer identity of the peer to switch the address for |
1359 | * @param address address of the other peer, NULL if other peer | 1359 | * @param address address of the other peer, NULL if other peer |
@@ -1361,6 +1361,8 @@ send_connect_ack_continuation (void *cls, | |||
1361 | * @param session session to use (or NULL) | 1361 | * @param session session to use (or NULL) |
1362 | * @param ats performance data | 1362 | * @param ats performance data |
1363 | * @param ats_count number of entries in ats | 1363 | * @param ats_count number of entries in ats |
1364 | * @param bandwidth_in inbound quota to be used when connection is up | ||
1365 | * @param bandwidth_out outbound quota to be used when connection is up | ||
1364 | * @return GNUNET_YES if we are currently connected, GNUNET_NO if the | 1366 | * @return GNUNET_YES if we are currently connected, GNUNET_NO if the |
1365 | * connection is not up (yet) | 1367 | * connection is not up (yet) |
1366 | */ | 1368 | */ |
diff --git a/src/transport/gnunet-service-transport_neighbours.h b/src/transport/gnunet-service-transport_neighbours.h index f6e599db1..33fa1dac5 100644 --- a/src/transport/gnunet-service-transport_neighbours.h +++ b/src/transport/gnunet-service-transport_neighbours.h | |||
@@ -221,10 +221,8 @@ GST_neighbours_switch_to_address (const struct GNUNET_PeerIdentity *peer, | |||
221 | *address, struct Session *session, | 221 | *address, struct Session *session, |
222 | const struct GNUNET_ATS_Information *ats, | 222 | const struct GNUNET_ATS_Information *ats, |
223 | uint32_t ats_count, | 223 | uint32_t ats_count, |
224 | struct GNUNET_BANDWIDTH_Value32NBO | 224 | struct GNUNET_BANDWIDTH_Value32NBO bandwidth_in, |
225 | bandwidth_in, | 225 | struct GNUNET_BANDWIDTH_Value32NBO bandwidth_out); |
226 | struct GNUNET_BANDWIDTH_Value32NBO | ||
227 | bandwidth_out); | ||
228 | 226 | ||
229 | 227 | ||
230 | /** | 228 | /** |
diff --git a/src/transport/plugin_transport_tcp.c b/src/transport/plugin_transport_tcp.c index 4157024c9..325ebaf8b 100644 --- a/src/transport/plugin_transport_tcp.c +++ b/src/transport/plugin_transport_tcp.c | |||
@@ -961,9 +961,7 @@ int session_it (void *cls, | |||
961 | * notify us by calling the env->session_end function | 961 | * notify us by calling the env->session_end function |
962 | * | 962 | * |
963 | * @param cls closure | 963 | * @param cls closure |
964 | * @param target the neighbour id | 964 | * @param address pointer to the GNUNET_HELLO_Address |
965 | * @param addr pointer to the address | ||
966 | * @param addrlen length of addr | ||
967 | * @return the session if the address is valid, NULL otherwise | 965 | * @return the session if the address is valid, NULL otherwise |
968 | */ | 966 | */ |
969 | static struct Session * | 967 | static struct Session * |
diff --git a/src/transport/plugin_transport_udp.c b/src/transport/plugin_transport_udp.c index 0e5e9037f..a83dc5c1b 100644 --- a/src/transport/plugin_transport_udp.c +++ b/src/transport/plugin_transport_udp.c | |||
@@ -823,7 +823,7 @@ enqueue_fragment (void *cls, const struct GNUNET_MessageHeader *msg) | |||
823 | * a fresh connection to another peer. | 823 | * a fresh connection to another peer. |
824 | * | 824 | * |
825 | * @param cls closure | 825 | * @param cls closure |
826 | * @param session which session must be used | 826 | * @param s which session must be used |
827 | * @param msgbuf the message to transmit | 827 | * @param msgbuf the message to transmit |
828 | * @param msgbuf_size number of bytes in 'msgbuf' | 828 | * @param msgbuf_size number of bytes in 'msgbuf' |
829 | * @param priority how important is the message (most plugins will | 829 | * @param priority how important is the message (most plugins will |
diff --git a/src/transport/plugin_transport_udp_new.c b/src/transport/plugin_transport_udp_new.c deleted file mode 100644 index db5d14ed1..000000000 --- a/src/transport/plugin_transport_udp_new.c +++ /dev/null | |||
@@ -1,2054 +0,0 @@ | |||
1 | /* | ||
2 | This file is part of GNUnet | ||
3 | (C) 2010, 2011 Christian Grothoff (and other contributing authors) | ||
4 | |||
5 | GNUnet is free software; you can redistribute it and/or modify | ||
6 | it under the terms of the GNU General Public License as published | ||
7 | by the Free Software Foundation; either version 3, or (at your | ||
8 | 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 | General Public License for more details. | ||
14 | |||
15 | You should have received a copy of the GNU General Public License | ||
16 | along with GNUnet; see the file COPYING. If not, write to the | ||
17 | Free Software Foundation, Inc., 59 Temple Place - Suite 330, | ||
18 | Boston, MA 02111-1307, USA. | ||
19 | */ | ||
20 | |||
21 | /** | ||
22 | * @file transport/plugin_transport_udp.c | ||
23 | * @brief Implementation of the UDP transport protocol | ||
24 | * @author Christian Grothoff | ||
25 | * @author Nathan Evans | ||
26 | * @author Matthias Wachs | ||
27 | */ | ||
28 | #include "platform.h" | ||
29 | #include "plugin_transport_udp_new.h" | ||
30 | #include "gnunet_hello_lib.h" | ||
31 | #include "gnunet_util_lib.h" | ||
32 | #include "gnunet_fragmentation_lib.h" | ||
33 | #include "gnunet_nat_lib.h" | ||
34 | #include "gnunet_protocols.h" | ||
35 | #include "gnunet_resolver_service.h" | ||
36 | #include "gnunet_signatures.h" | ||
37 | #include "gnunet_constants.h" | ||
38 | #include "gnunet_statistics_service.h" | ||
39 | #include "gnunet_transport_service.h" | ||
40 | #include "gnunet_transport_plugin.h" | ||
41 | #include "transport.h" | ||
42 | |||
43 | #define LOG(kind,...) GNUNET_log_from (kind, "transport-udp", __VA_ARGS__) | ||
44 | |||
45 | |||
46 | /** | ||
47 | * Number of messages we can defragment in parallel. We only really | ||
48 | * defragment 1 message at a time, but if messages get re-ordered, we | ||
49 | * may want to keep knowledge about the previous message to avoid | ||
50 | * discarding the current message in favor of a single fragment of a | ||
51 | * previous message. 3 should be good since we don't expect massive | ||
52 | * message reorderings with UDP. | ||
53 | */ | ||
54 | #define UDP_MAX_MESSAGES_IN_DEFRAG 3 | ||
55 | |||
56 | /** | ||
57 | * We keep a defragmentation queue per sender address. How many | ||
58 | * sender addresses do we support at the same time? Memory consumption | ||
59 | * is roughly a factor of 32k * UDP_MAX_MESSAGES_IN_DEFRAG times this | ||
60 | * value. (So 128 corresponds to 12 MB and should suffice for | ||
61 | * connecting to roughly 128 peers via UDP). | ||
62 | */ | ||
63 | #define UDP_MAX_SENDER_ADDRESSES_WITH_DEFRAG 128 | ||
64 | |||
65 | |||
66 | |||
67 | /** | ||
68 | * Closure for 'append_port'. | ||
69 | */ | ||
70 | struct PrettyPrinterContext | ||
71 | { | ||
72 | /** | ||
73 | * Function to call with the result. | ||
74 | */ | ||
75 | GNUNET_TRANSPORT_AddressStringCallback asc; | ||
76 | |||
77 | /** | ||
78 | * Clsoure for 'asc'. | ||
79 | */ | ||
80 | void *asc_cls; | ||
81 | |||
82 | /** | ||
83 | * Port to add after the IP address. | ||
84 | */ | ||
85 | uint16_t port; | ||
86 | }; | ||
87 | |||
88 | struct Session | ||
89 | { | ||
90 | /** | ||
91 | * Which peer is this session for? | ||
92 | */ | ||
93 | struct GNUNET_PeerIdentity target; | ||
94 | |||
95 | /** | ||
96 | * Address of the other peer | ||
97 | */ | ||
98 | const struct sockaddr *sock_addr; | ||
99 | |||
100 | size_t addrlen; | ||
101 | |||
102 | /** | ||
103 | * Desired delay for next sending we send to other peer | ||
104 | */ | ||
105 | struct GNUNET_TIME_Relative flow_delay_for_other_peer; | ||
106 | |||
107 | /** | ||
108 | * Desired delay for next sending we received from other peer | ||
109 | */ | ||
110 | struct GNUNET_TIME_Absolute flow_delay_from_other_peer; | ||
111 | |||
112 | /** | ||
113 | * expected delay for ACKs | ||
114 | */ | ||
115 | struct GNUNET_TIME_Relative last_expected_delay; | ||
116 | |||
117 | |||
118 | struct GNUNET_ATS_Information ats; | ||
119 | |||
120 | struct FragmentationContext * frag_ctx; | ||
121 | }; | ||
122 | |||
123 | |||
124 | struct SessionCompareContext | ||
125 | { | ||
126 | struct Session *res; | ||
127 | const struct GNUNET_HELLO_Address *addr; | ||
128 | }; | ||
129 | |||
130 | |||
131 | /** | ||
132 | * Closure for 'process_inbound_tokenized_messages' | ||
133 | */ | ||
134 | struct SourceInformation | ||
135 | { | ||
136 | /** | ||
137 | * Sender identity. | ||
138 | */ | ||
139 | struct GNUNET_PeerIdentity sender; | ||
140 | |||
141 | /** | ||
142 | * Source address. | ||
143 | */ | ||
144 | const void *arg; | ||
145 | |||
146 | /** | ||
147 | * Number of bytes in source address. | ||
148 | */ | ||
149 | size_t args; | ||
150 | |||
151 | struct Session *session; | ||
152 | }; | ||
153 | |||
154 | |||
155 | /** | ||
156 | * Closure for 'find_receive_context'. | ||
157 | */ | ||
158 | struct FindReceiveContext | ||
159 | { | ||
160 | /** | ||
161 | * Where to store the result. | ||
162 | */ | ||
163 | struct DefragContext *rc; | ||
164 | |||
165 | /** | ||
166 | * Address to find. | ||
167 | */ | ||
168 | const struct sockaddr *addr; | ||
169 | |||
170 | /** | ||
171 | * Number of bytes in 'addr'. | ||
172 | */ | ||
173 | socklen_t addr_len; | ||
174 | |||
175 | struct Session *session; | ||
176 | }; | ||
177 | |||
178 | |||
179 | |||
180 | /** | ||
181 | * Data structure to track defragmentation contexts based | ||
182 | * on the source of the UDP traffic. | ||
183 | */ | ||
184 | struct DefragContext | ||
185 | { | ||
186 | |||
187 | /** | ||
188 | * Defragmentation context. | ||
189 | */ | ||
190 | struct GNUNET_DEFRAGMENT_Context *defrag; | ||
191 | |||
192 | /** | ||
193 | * Source address this receive context is for (allocated at the | ||
194 | * end of the struct). | ||
195 | */ | ||
196 | const struct sockaddr *src_addr; | ||
197 | |||
198 | /** | ||
199 | * Reference to master plugin struct. | ||
200 | */ | ||
201 | struct Plugin *plugin; | ||
202 | |||
203 | /** | ||
204 | * Node in the defrag heap. | ||
205 | */ | ||
206 | struct GNUNET_CONTAINER_HeapNode *hnode; | ||
207 | |||
208 | /** | ||
209 | * Length of 'src_addr' | ||
210 | */ | ||
211 | size_t addr_len; | ||
212 | }; | ||
213 | |||
214 | |||
215 | |||
216 | /** | ||
217 | * Closure for 'process_inbound_tokenized_messages' | ||
218 | */ | ||
219 | struct FragmentationContext | ||
220 | { | ||
221 | struct FragmentationContext * next; | ||
222 | struct FragmentationContext * prev; | ||
223 | |||
224 | struct Plugin * plugin; | ||
225 | struct GNUNET_FRAGMENT_Context * frag; | ||
226 | struct Session * session; | ||
227 | |||
228 | struct GNUNET_TIME_Absolute timeout; | ||
229 | |||
230 | |||
231 | /** | ||
232 | * Function to call upon completion of the transmission. | ||
233 | */ | ||
234 | GNUNET_TRANSPORT_TransmitContinuation cont; | ||
235 | |||
236 | /** | ||
237 | * Closure for 'cont'. | ||
238 | */ | ||
239 | void *cont_cls; | ||
240 | |||
241 | size_t bytes_to_send; | ||
242 | }; | ||
243 | |||
244 | |||
245 | struct UDPMessageWrapper | ||
246 | { | ||
247 | struct Session *session; | ||
248 | struct UDPMessageWrapper *prev; | ||
249 | struct UDPMessageWrapper *next; | ||
250 | char *udp; | ||
251 | size_t msg_size; | ||
252 | |||
253 | struct GNUNET_TIME_Absolute timeout; | ||
254 | |||
255 | /** | ||
256 | * Function to call upon completion of the transmission. | ||
257 | */ | ||
258 | GNUNET_TRANSPORT_TransmitContinuation cont; | ||
259 | |||
260 | /** | ||
261 | * Closure for 'cont'. | ||
262 | */ | ||
263 | void *cont_cls; | ||
264 | |||
265 | struct FragmentationContext *frag_ctx; | ||
266 | |||
267 | }; | ||
268 | |||
269 | |||
270 | /** | ||
271 | * UDP ACK Message-Packet header (after defragmentation). | ||
272 | */ | ||
273 | struct UDP_ACK_Message | ||
274 | { | ||
275 | /** | ||
276 | * Message header. | ||
277 | */ | ||
278 | struct GNUNET_MessageHeader header; | ||
279 | |||
280 | /** | ||
281 | * Desired delay for flow control | ||
282 | */ | ||
283 | uint32_t delay; | ||
284 | |||
285 | /** | ||
286 | * What is the identity of the sender | ||
287 | */ | ||
288 | struct GNUNET_PeerIdentity sender; | ||
289 | |||
290 | }; | ||
291 | |||
292 | |||
293 | |||
294 | /** | ||
295 | * Function called for a quick conversion of the binary address to | ||
296 | * a numeric address. Note that the caller must not free the | ||
297 | * address and that the next call to this function is allowed | ||
298 | * to override the address again. | ||
299 | * | ||
300 | * @param cls closure | ||
301 | * @param addr binary address | ||
302 | * @param addrlen length of the address | ||
303 | * @return string representing the same address | ||
304 | */ | ||
305 | const char * | ||
306 | udp_address_to_string (void *cls, const void *addr, size_t addrlen) | ||
307 | { | ||
308 | static char rbuf[INET6_ADDRSTRLEN + 10]; | ||
309 | char buf[INET6_ADDRSTRLEN]; | ||
310 | const void *sb; | ||
311 | struct in_addr a4; | ||
312 | struct in6_addr a6; | ||
313 | const struct IPv4UdpAddress *t4; | ||
314 | const struct IPv6UdpAddress *t6; | ||
315 | int af; | ||
316 | uint16_t port; | ||
317 | |||
318 | if (addrlen == sizeof (struct IPv6UdpAddress)) | ||
319 | { | ||
320 | t6 = addr; | ||
321 | af = AF_INET6; | ||
322 | port = ntohs (t6->u6_port); | ||
323 | memcpy (&a6, &t6->ipv6_addr, sizeof (a6)); | ||
324 | sb = &a6; | ||
325 | } | ||
326 | else if (addrlen == sizeof (struct IPv4UdpAddress)) | ||
327 | { | ||
328 | t4 = addr; | ||
329 | af = AF_INET; | ||
330 | port = ntohs (t4->u4_port); | ||
331 | memcpy (&a4, &t4->ipv4_addr, sizeof (a4)); | ||
332 | sb = &a4; | ||
333 | } | ||
334 | else | ||
335 | { | ||
336 | GNUNET_break_op (0); | ||
337 | return NULL; | ||
338 | } | ||
339 | inet_ntop (af, sb, buf, INET6_ADDRSTRLEN); | ||
340 | GNUNET_snprintf (rbuf, sizeof (rbuf), (af == AF_INET6) ? "[%s]:%u" : "%s:%u", | ||
341 | buf, port); | ||
342 | return rbuf; | ||
343 | } | ||
344 | |||
345 | |||
346 | /** | ||
347 | * Append our port and forward the result. | ||
348 | * | ||
349 | * @param cls a 'struct PrettyPrinterContext' | ||
350 | * @param hostname result from DNS resolver | ||
351 | */ | ||
352 | static void | ||
353 | append_port (void *cls, const char *hostname) | ||
354 | { | ||
355 | struct PrettyPrinterContext *ppc = cls; | ||
356 | char *ret; | ||
357 | |||
358 | if (hostname == NULL) | ||
359 | { | ||
360 | ppc->asc (ppc->asc_cls, NULL); | ||
361 | GNUNET_free (ppc); | ||
362 | return; | ||
363 | } | ||
364 | GNUNET_asprintf (&ret, "%s:%d", hostname, ppc->port); | ||
365 | ppc->asc (ppc->asc_cls, ret); | ||
366 | GNUNET_free (ret); | ||
367 | } | ||
368 | |||
369 | |||
370 | /** | ||
371 | * Convert the transports address to a nice, human-readable | ||
372 | * format. | ||
373 | * | ||
374 | * @param cls closure | ||
375 | * @param type name of the transport that generated the address | ||
376 | * @param addr one of the addresses of the host, NULL for the last address | ||
377 | * the specific address format depends on the transport | ||
378 | * @param addrlen length of the address | ||
379 | * @param numeric should (IP) addresses be displayed in numeric form? | ||
380 | * @param timeout after how long should we give up? | ||
381 | * @param asc function to call on each string | ||
382 | * @param asc_cls closure for asc | ||
383 | */ | ||
384 | static void | ||
385 | udp_plugin_address_pretty_printer (void *cls, const char *type, | ||
386 | const void *addr, size_t addrlen, | ||
387 | int numeric, | ||
388 | struct GNUNET_TIME_Relative timeout, | ||
389 | GNUNET_TRANSPORT_AddressStringCallback asc, | ||
390 | void *asc_cls) | ||
391 | { | ||
392 | struct PrettyPrinterContext *ppc; | ||
393 | const void *sb; | ||
394 | size_t sbs; | ||
395 | struct sockaddr_in a4; | ||
396 | struct sockaddr_in6 a6; | ||
397 | const struct IPv4UdpAddress *u4; | ||
398 | const struct IPv6UdpAddress *u6; | ||
399 | uint16_t port; | ||
400 | |||
401 | if (addrlen == sizeof (struct IPv6UdpAddress)) | ||
402 | { | ||
403 | u6 = addr; | ||
404 | memset (&a6, 0, sizeof (a6)); | ||
405 | a6.sin6_family = AF_INET6; | ||
406 | #if HAVE_SOCKADDR_IN_SIN_LEN | ||
407 | a6.sin6_len = sizeof (a6); | ||
408 | #endif | ||
409 | a6.sin6_port = u6->u6_port; | ||
410 | memcpy (&a6.sin6_addr, &u6->ipv6_addr, sizeof (struct in6_addr)); | ||
411 | port = ntohs (u6->u6_port); | ||
412 | sb = &a6; | ||
413 | sbs = sizeof (a6); | ||
414 | } | ||
415 | else if (addrlen == sizeof (struct IPv4UdpAddress)) | ||
416 | { | ||
417 | u4 = addr; | ||
418 | memset (&a4, 0, sizeof (a4)); | ||
419 | a4.sin_family = AF_INET; | ||
420 | #if HAVE_SOCKADDR_IN_SIN_LEN | ||
421 | a4.sin_len = sizeof (a4); | ||
422 | #endif | ||
423 | a4.sin_port = u4->u4_port; | ||
424 | a4.sin_addr.s_addr = u4->ipv4_addr; | ||
425 | port = ntohs (u4->u4_port); | ||
426 | sb = &a4; | ||
427 | sbs = sizeof (a4); | ||
428 | } | ||
429 | else | ||
430 | { | ||
431 | /* invalid address */ | ||
432 | GNUNET_break_op (0); | ||
433 | asc (asc_cls, NULL); | ||
434 | return; | ||
435 | } | ||
436 | ppc = GNUNET_malloc (sizeof (struct PrettyPrinterContext)); | ||
437 | ppc->asc = asc; | ||
438 | ppc->asc_cls = asc_cls; | ||
439 | ppc->port = port; | ||
440 | GNUNET_RESOLVER_hostname_get (sb, sbs, !numeric, timeout, &append_port, ppc); | ||
441 | } | ||
442 | |||
443 | |||
444 | /** | ||
445 | * Check if the given port is plausible (must be either our listen | ||
446 | * port or our advertised port). If it is neither, we return | ||
447 | * GNUNET_SYSERR. | ||
448 | * | ||
449 | * @param plugin global variables | ||
450 | * @param in_port port number to check | ||
451 | * @return GNUNET_OK if port is either open_port or adv_port | ||
452 | */ | ||
453 | static int | ||
454 | check_port (struct Plugin *plugin, uint16_t in_port) | ||
455 | { | ||
456 | if ((in_port == plugin->port) || (in_port == plugin->aport)) | ||
457 | return GNUNET_OK; | ||
458 | return GNUNET_SYSERR; | ||
459 | } | ||
460 | |||
461 | |||
462 | |||
463 | /** | ||
464 | * Function that will be called to check if a binary address for this | ||
465 | * plugin is well-formed and corresponds to an address for THIS peer | ||
466 | * (as per our configuration). Naturally, if absolutely necessary, | ||
467 | * plugins can be a bit conservative in their answer, but in general | ||
468 | * plugins should make sure that the address does not redirect | ||
469 | * traffic to a 3rd party that might try to man-in-the-middle our | ||
470 | * traffic. | ||
471 | * | ||
472 | * @param cls closure, should be our handle to the Plugin | ||
473 | * @param addr pointer to the address | ||
474 | * @param addrlen length of addr | ||
475 | * @return GNUNET_OK if this is a plausible address for this peer | ||
476 | * and transport, GNUNET_SYSERR if not | ||
477 | * | ||
478 | */ | ||
479 | static int | ||
480 | udp_plugin_check_address (void *cls, const void *addr, size_t addrlen) | ||
481 | { | ||
482 | struct Plugin *plugin = cls; | ||
483 | struct IPv4UdpAddress *v4; | ||
484 | struct IPv6UdpAddress *v6; | ||
485 | |||
486 | if ((addrlen != sizeof (struct IPv4UdpAddress)) && | ||
487 | (addrlen != sizeof (struct IPv6UdpAddress))) | ||
488 | { | ||
489 | GNUNET_break_op (0); | ||
490 | return GNUNET_SYSERR; | ||
491 | } | ||
492 | if (addrlen == sizeof (struct IPv4UdpAddress)) | ||
493 | { | ||
494 | v4 = (struct IPv4UdpAddress *) addr; | ||
495 | if (GNUNET_OK != check_port (plugin, ntohs (v4->u4_port))) | ||
496 | return GNUNET_SYSERR; | ||
497 | if (GNUNET_OK != | ||
498 | GNUNET_NAT_test_address (plugin->nat, &v4->ipv4_addr, | ||
499 | sizeof (struct in_addr))) | ||
500 | return GNUNET_SYSERR; | ||
501 | } | ||
502 | else | ||
503 | { | ||
504 | v6 = (struct IPv6UdpAddress *) addr; | ||
505 | if (IN6_IS_ADDR_LINKLOCAL (&v6->ipv6_addr)) | ||
506 | { | ||
507 | GNUNET_break_op (0); | ||
508 | return GNUNET_SYSERR; | ||
509 | } | ||
510 | if (GNUNET_OK != check_port (plugin, ntohs (v6->u6_port))) | ||
511 | return GNUNET_SYSERR; | ||
512 | if (GNUNET_OK != | ||
513 | GNUNET_NAT_test_address (plugin->nat, &v6->ipv6_addr, | ||
514 | sizeof (struct in6_addr))) | ||
515 | return GNUNET_SYSERR; | ||
516 | } | ||
517 | return GNUNET_OK; | ||
518 | } | ||
519 | |||
520 | |||
521 | /** | ||
522 | * Destroy a session, plugin is being unloaded. | ||
523 | * | ||
524 | * @param cls unused | ||
525 | * @param key hash of public key of target peer | ||
526 | * @param value a 'struct PeerSession*' to clean up | ||
527 | * @return GNUNET_OK (continue to iterate) | ||
528 | */ | ||
529 | static int | ||
530 | disconnect_and_free_it (void *cls, const GNUNET_HashCode * key, void *value) | ||
531 | { | ||
532 | struct Plugin *plugin = cls; | ||
533 | struct Session *s = value; | ||
534 | struct UDPMessageWrapper *udpw; | ||
535 | |||
536 | #if DEBUG_UDP | ||
537 | LOG (GNUNET_ERROR_TYPE_DEBUG, | ||
538 | "Session %p to peer `%s' address ended \n", | ||
539 | s, | ||
540 | GNUNET_i2s (&s->target), | ||
541 | GNUNET_a2s (s->sock_addr, s->addrlen)); | ||
542 | #endif | ||
543 | plugin->env->session_end (plugin->env->cls, &s->target, s); | ||
544 | |||
545 | if (s->frag_ctx != NULL) | ||
546 | { | ||
547 | GNUNET_FRAGMENT_context_destroy(s->frag_ctx->frag); | ||
548 | GNUNET_free (s->frag_ctx); | ||
549 | s->frag_ctx = NULL; | ||
550 | } | ||
551 | |||
552 | udpw = plugin->msg_head; | ||
553 | while (udpw != NULL) | ||
554 | { | ||
555 | if (udpw->session == s) | ||
556 | { | ||
557 | GNUNET_CONTAINER_DLL_remove(plugin->msg_head, plugin->msg_tail, udpw); | ||
558 | |||
559 | if (udpw->cont != NULL) | ||
560 | udpw->cont (udpw->cont_cls, &s->target, GNUNET_SYSERR); | ||
561 | GNUNET_free (udpw); | ||
562 | } | ||
563 | udpw = plugin->msg_head; | ||
564 | } | ||
565 | |||
566 | GNUNET_assert (GNUNET_YES == | ||
567 | GNUNET_CONTAINER_multihashmap_remove (plugin->sessions, | ||
568 | &s->target.hashPubKey, | ||
569 | s)); | ||
570 | |||
571 | |||
572 | GNUNET_free (s); | ||
573 | return GNUNET_OK; | ||
574 | } | ||
575 | |||
576 | |||
577 | /** | ||
578 | * Disconnect from a remote node. Clean up session if we have one for this peer | ||
579 | * | ||
580 | * @param cls closure for this call (should be handle to Plugin) | ||
581 | * @param target the peeridentity of the peer to disconnect | ||
582 | * @return GNUNET_OK on success, GNUNET_SYSERR if the operation failed | ||
583 | */ | ||
584 | static void | ||
585 | udp_disconnect (void *cls, const struct GNUNET_PeerIdentity *target) | ||
586 | { | ||
587 | struct Plugin *plugin = cls; | ||
588 | GNUNET_assert (plugin != NULL); | ||
589 | |||
590 | GNUNET_assert (target != NULL); | ||
591 | #if DEBUG_UDP | ||
592 | LOG (GNUNET_ERROR_TYPE_DEBUG, | ||
593 | "Disconnecting from peer `%s'\n", GNUNET_i2s (target)); | ||
594 | #endif | ||
595 | /* Clean up sessions */ | ||
596 | GNUNET_CONTAINER_multihashmap_get_multiple (plugin->sessions, &target->hashPubKey, &disconnect_and_free_it, plugin); | ||
597 | |||
598 | LOG (GNUNET_ERROR_TYPE_DEBUG, | ||
599 | "FREEED SESSIONS from peer `%s'\n", GNUNET_i2s (target)); | ||
600 | } | ||
601 | |||
602 | static struct Session * | ||
603 | create_session (struct Plugin *plugin, const struct GNUNET_PeerIdentity *target, | ||
604 | const void *addr, size_t addrlen, | ||
605 | GNUNET_TRANSPORT_TransmitContinuation cont, void *cont_cls) | ||
606 | { | ||
607 | struct Session *s; | ||
608 | const struct IPv4UdpAddress *t4; | ||
609 | const struct IPv6UdpAddress *t6; | ||
610 | struct sockaddr_in *v4; | ||
611 | struct sockaddr_in6 *v6; | ||
612 | size_t len; | ||
613 | |||
614 | switch (addrlen) | ||
615 | { | ||
616 | case sizeof (struct IPv4UdpAddress): | ||
617 | if (NULL == plugin->sockv4) | ||
618 | { | ||
619 | return NULL; | ||
620 | } | ||
621 | t4 = addr; | ||
622 | s = GNUNET_malloc (sizeof (struct Session) + sizeof (struct sockaddr_in)); | ||
623 | len = sizeof (struct sockaddr_in); | ||
624 | v4 = (struct sockaddr_in *) &s[1]; | ||
625 | v4->sin_family = AF_INET; | ||
626 | #if HAVE_SOCKADDR_IN_SIN_LEN | ||
627 | v4->sin_len = sizeof (struct sockaddr_in); | ||
628 | #endif | ||
629 | v4->sin_port = t4->u4_port; | ||
630 | v4->sin_addr.s_addr = t4->ipv4_addr; | ||
631 | s->ats = plugin->env->get_address_type (plugin->env->cls, (const struct sockaddr *) v4, sizeof (struct sockaddr_in)); | ||
632 | break; | ||
633 | case sizeof (struct IPv6UdpAddress): | ||
634 | if (NULL == plugin->sockv6) | ||
635 | { | ||
636 | return NULL; | ||
637 | } | ||
638 | t6 = addr; | ||
639 | s = | ||
640 | GNUNET_malloc (sizeof (struct Session) + sizeof (struct sockaddr_in6)); | ||
641 | len = sizeof (struct sockaddr_in6); | ||
642 | v6 = (struct sockaddr_in6 *) &s[1]; | ||
643 | v6->sin6_family = AF_INET6; | ||
644 | #if HAVE_SOCKADDR_IN_SIN_LEN | ||
645 | v6->sin6_len = sizeof (struct sockaddr_in6); | ||
646 | #endif | ||
647 | v6->sin6_port = t6->u6_port; | ||
648 | v6->sin6_addr = t6->ipv6_addr; | ||
649 | s->ats = plugin->env->get_address_type (plugin->env->cls, (const struct sockaddr *) v6, sizeof (struct sockaddr_in6)); | ||
650 | break; | ||
651 | default: | ||
652 | /* Must have a valid address to send to */ | ||
653 | GNUNET_break_op (0); | ||
654 | return NULL; | ||
655 | } | ||
656 | |||
657 | s->addrlen = len; | ||
658 | s->target = *target; | ||
659 | s->sock_addr = (const struct sockaddr *) &s[1]; | ||
660 | s->flow_delay_for_other_peer = GNUNET_TIME_relative_get_zero(); | ||
661 | s->flow_delay_from_other_peer = GNUNET_TIME_absolute_get_zero(); | ||
662 | s->last_expected_delay = GNUNET_TIME_UNIT_SECONDS; | ||
663 | |||
664 | return s; | ||
665 | } | ||
666 | |||
667 | static int session_cmp_it (void *cls, | ||
668 | const GNUNET_HashCode * key, | ||
669 | void *value) | ||
670 | { | ||
671 | struct SessionCompareContext * cctx = cls; | ||
672 | const struct GNUNET_HELLO_Address *address = cctx->addr; | ||
673 | struct Session *s = value; | ||
674 | |||
675 | socklen_t s_addrlen = s->addrlen; | ||
676 | |||
677 | #if VERBOSE_UDP | ||
678 | GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Comparing address %s <-> %s\n", | ||
679 | udp_address_to_string (NULL, (void *) address->address, address->address_length), | ||
680 | GNUNET_a2s (s->sock_addr, s->addrlen)); | ||
681 | #endif | ||
682 | |||
683 | if ((address->address_length == sizeof (struct IPv4UdpAddress)) && | ||
684 | (s_addrlen == sizeof (struct sockaddr_in))) | ||
685 | { | ||
686 | struct IPv4UdpAddress * u4 = NULL; | ||
687 | u4 = (struct IPv4UdpAddress *) address->address; | ||
688 | const struct sockaddr_in *s4 = (const struct sockaddr_in *) s->sock_addr; | ||
689 | if ((0 == memcmp ((const void *) &u4->ipv4_addr,(const void *) &s4->sin_addr, sizeof (struct in_addr))) && | ||
690 | (u4->u4_port == s4->sin_port)) | ||
691 | { | ||
692 | cctx->res = s; | ||
693 | return GNUNET_NO; | ||
694 | } | ||
695 | |||
696 | } | ||
697 | if ((address->address_length == sizeof (struct IPv6UdpAddress)) && | ||
698 | (s_addrlen == sizeof (struct sockaddr_in6))) | ||
699 | { | ||
700 | struct IPv6UdpAddress * u6 = NULL; | ||
701 | u6 = (struct IPv6UdpAddress *) address->address; | ||
702 | const struct sockaddr_in6 *s6 = (const struct sockaddr_in6 *) s->sock_addr; | ||
703 | if ((0 == memcmp (&u6->ipv6_addr, &s6->sin6_addr, sizeof (struct in6_addr))) && | ||
704 | (u6->u6_port == s6->sin6_port)) | ||
705 | { | ||
706 | cctx->res = s; | ||
707 | return GNUNET_NO; | ||
708 | } | ||
709 | } | ||
710 | |||
711 | |||
712 | return GNUNET_YES; | ||
713 | } | ||
714 | |||
715 | |||
716 | /** | ||
717 | * Creates a new outbound session the transport service will use to send data to the | ||
718 | * peer | ||
719 | * | ||
720 | * @param cls the plugin | ||
721 | * @param address the address | ||
722 | * @return the session or NULL of max connections exceeded | ||
723 | */ | ||
724 | static struct Session * | ||
725 | udp_plugin_get_session (void *cls, | ||
726 | const struct GNUNET_HELLO_Address *address) | ||
727 | { | ||
728 | struct Session * s = NULL; | ||
729 | struct Plugin * plugin = cls; | ||
730 | |||
731 | GNUNET_assert (plugin != NULL); | ||
732 | GNUNET_assert (address != NULL); | ||
733 | |||
734 | if ((address->address == NULL) || | ||
735 | ((address->address_length != sizeof (struct IPv4UdpAddress)) && | ||
736 | (address->address_length != sizeof (struct IPv6UdpAddress)))) | ||
737 | { | ||
738 | GNUNET_break (0); | ||
739 | return NULL; | ||
740 | } | ||
741 | |||
742 | /* check if session already exists */ | ||
743 | struct SessionCompareContext cctx; | ||
744 | cctx.addr = address; | ||
745 | cctx.res = NULL; | ||
746 | #if VERBOSE_UDP | ||
747 | GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Looking for existing session for peer `%s' `%s' \n", GNUNET_i2s (&address->peer), udp_address_to_string(NULL, address->address, address->address_length)); | ||
748 | #endif | ||
749 | GNUNET_CONTAINER_multihashmap_get_multiple(plugin->sessions, &address->peer.hashPubKey, session_cmp_it, &cctx); | ||
750 | if (cctx.res != NULL) | ||
751 | { | ||
752 | #if VERBOSE_UDP | ||
753 | GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Found existing session %p\n", cctx.res); | ||
754 | #endif | ||
755 | return cctx.res; | ||
756 | } | ||
757 | |||
758 | /* otherwise create new */ | ||
759 | s = create_session (plugin, | ||
760 | &address->peer, | ||
761 | address->address, | ||
762 | address->address_length, | ||
763 | NULL, NULL); | ||
764 | #if VERBOSE | ||
765 | GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, | ||
766 | "Creating new session %p for peer `%s' address `%s'\n", | ||
767 | s, | ||
768 | GNUNET_i2s(&address->peer), | ||
769 | udp_address_to_string(NULL,address->address,address->address_length)); | ||
770 | #endif | ||
771 | GNUNET_assert (GNUNET_OK == | ||
772 | GNUNET_CONTAINER_multihashmap_put (plugin->sessions, | ||
773 | &s->target.hashPubKey, | ||
774 | s, | ||
775 | GNUNET_CONTAINER_MULTIHASHMAPOPTION_MULTIPLE)); | ||
776 | |||
777 | return s; | ||
778 | } | ||
779 | |||
780 | /** | ||
781 | * Function that is called with messages created by the fragmentation | ||
782 | * module. In the case of the 'proc' callback of the | ||
783 | * GNUNET_FRAGMENT_context_create function, this function must | ||
784 | * eventually call 'GNUNET_FRAGMENT_context_transmission_done'. | ||
785 | * | ||
786 | * @param cls closure, the 'struct FragmentationContext' | ||
787 | * @param msg the message that was created | ||
788 | */ | ||
789 | static void | ||
790 | enqueue_fragment (void *cls, const struct GNUNET_MessageHeader *msg) | ||
791 | { | ||
792 | struct FragmentationContext *frag_ctx = cls; | ||
793 | struct Plugin *plugin = frag_ctx->plugin; | ||
794 | struct UDPMessageWrapper * udpw; | ||
795 | |||
796 | size_t msg_len = ntohs (msg->size); | ||
797 | |||
798 | #if VERBOSE_UDP | ||
799 | GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Enqueuing fragment with %u bytes %u\n", msg_len , sizeof (struct UDPMessageWrapper)); | ||
800 | #endif | ||
801 | |||
802 | udpw = GNUNET_malloc (sizeof (struct UDPMessageWrapper) + msg_len); | ||
803 | udpw->session = frag_ctx->session; | ||
804 | udpw->udp = (char *) &udpw[1]; | ||
805 | |||
806 | udpw->msg_size = msg_len; | ||
807 | udpw->cont = frag_ctx->cont; | ||
808 | udpw->cont_cls = frag_ctx->cont_cls; | ||
809 | udpw->timeout = frag_ctx->timeout; | ||
810 | udpw->frag_ctx = frag_ctx; | ||
811 | memcpy (udpw->udp, msg, msg_len); | ||
812 | |||
813 | GNUNET_CONTAINER_DLL_insert(plugin->msg_head, plugin->msg_tail, udpw); | ||
814 | } | ||
815 | |||
816 | |||
817 | /** | ||
818 | * Function that can be used by the transport service to transmit | ||
819 | * a message using the plugin. Note that in the case of a | ||
820 | * peer disconnecting, the continuation MUST be called | ||
821 | * prior to the disconnect notification itself. This function | ||
822 | * will be called with this peer's HELLO message to initiate | ||
823 | * a fresh connection to another peer. | ||
824 | * | ||
825 | * @param cls closure | ||
826 | * @param session which session must be used | ||
827 | * @param msgbuf the message to transmit | ||
828 | * @param msgbuf_size number of bytes in 'msgbuf' | ||
829 | * @param priority how important is the message (most plugins will | ||
830 | * ignore message priority and just FIFO) | ||
831 | * @param to how long to wait at most for the transmission (does not | ||
832 | * require plugins to discard the message after the timeout, | ||
833 | * just advisory for the desired delay; most plugins will ignore | ||
834 | * this as well) | ||
835 | * @param cont continuation to call once the message has | ||
836 | * been transmitted (or if the transport is ready | ||
837 | * for the next transmission call; or if the | ||
838 | * peer disconnected...); can be NULL | ||
839 | * @param cont_cls closure for cont | ||
840 | * @return number of bytes used (on the physical network, with overheads); | ||
841 | * -1 on hard errors (i.e. address invalid); 0 is a legal value | ||
842 | * and does NOT mean that the message was not transmitted (DV) | ||
843 | */ | ||
844 | static ssize_t | ||
845 | udp_plugin_send (void *cls, | ||
846 | struct Session *s, | ||
847 | const char *msgbuf, size_t msgbuf_size, | ||
848 | unsigned int priority, | ||
849 | struct GNUNET_TIME_Relative to, | ||
850 | GNUNET_TRANSPORT_TransmitContinuation cont, void *cont_cls) | ||
851 | { | ||
852 | struct Plugin *plugin = cls; | ||
853 | size_t mlen = msgbuf_size + sizeof (struct UDPMessage); | ||
854 | |||
855 | struct UDPMessageWrapper * udpw; | ||
856 | struct UDPMessage *udp; | ||
857 | char mbuf[mlen]; | ||
858 | GNUNET_assert (plugin != NULL); | ||
859 | GNUNET_assert (s != NULL); | ||
860 | |||
861 | if (mlen >= GNUNET_SERVER_MAX_MESSAGE_SIZE) | ||
862 | { | ||
863 | GNUNET_break (0); | ||
864 | return GNUNET_SYSERR; | ||
865 | } | ||
866 | |||
867 | if (GNUNET_YES != GNUNET_CONTAINER_multihashmap_contains_value(plugin->sessions, &s->target.hashPubKey, s)) | ||
868 | { | ||
869 | GNUNET_break (0); | ||
870 | return GNUNET_SYSERR; | ||
871 | } | ||
872 | |||
873 | LOG (GNUNET_ERROR_TYPE_DEBUG, | ||
874 | "UDP transmits %u-byte message to `%s' using address `%s'\n", | ||
875 | msgbuf_size, | ||
876 | GNUNET_i2s (&s->target), | ||
877 | GNUNET_a2s(s->sock_addr, s->addrlen)); | ||
878 | |||
879 | /* Message */ | ||
880 | udp = (struct UDPMessage *) mbuf; | ||
881 | udp->header.size = htons (mlen); | ||
882 | udp->header.type = htons (GNUNET_MESSAGE_TYPE_TRANSPORT_UDP_MESSAGE); | ||
883 | udp->reserved = htonl (0); | ||
884 | udp->sender = *plugin->env->my_identity; | ||
885 | |||
886 | if (mlen <= UDP_MTU) | ||
887 | { | ||
888 | udpw = GNUNET_malloc (sizeof (struct UDPMessageWrapper) + mlen); | ||
889 | udpw->session = s; | ||
890 | udpw->udp = (char *) &udpw[1]; | ||
891 | udpw->msg_size = mlen; | ||
892 | udpw->timeout = GNUNET_TIME_absolute_add(GNUNET_TIME_absolute_get(), to); | ||
893 | udpw->cont = cont; | ||
894 | udpw->cont_cls = cont_cls; | ||
895 | udpw->frag_ctx = NULL; | ||
896 | |||
897 | memcpy (udpw->udp, udp, sizeof (struct UDPMessage)); | ||
898 | memcpy (&udpw->udp[sizeof (struct UDPMessage)], msgbuf, msgbuf_size); | ||
899 | |||
900 | GNUNET_CONTAINER_DLL_insert(plugin->msg_head, plugin->msg_tail, udpw); | ||
901 | } | ||
902 | else | ||
903 | { | ||
904 | LOG (GNUNET_ERROR_TYPE_DEBUG, | ||
905 | "UDP has to fragment message \n"); | ||
906 | if (s->frag_ctx != NULL) | ||
907 | return GNUNET_SYSERR; | ||
908 | memcpy (&udp[1], msgbuf, msgbuf_size); | ||
909 | struct FragmentationContext * frag_ctx = GNUNET_malloc(sizeof (struct FragmentationContext)); | ||
910 | |||
911 | frag_ctx->plugin = plugin; | ||
912 | frag_ctx->session = s; | ||
913 | frag_ctx->cont = cont; | ||
914 | frag_ctx->cont_cls = cont_cls; | ||
915 | frag_ctx->timeout = GNUNET_TIME_absolute_add(GNUNET_TIME_absolute_get(), to); | ||
916 | frag_ctx->bytes_to_send = mlen; | ||
917 | frag_ctx->frag = GNUNET_FRAGMENT_context_create (plugin->env->stats, | ||
918 | UDP_MTU, | ||
919 | &plugin->tracker, | ||
920 | s->last_expected_delay, | ||
921 | &udp->header, | ||
922 | &enqueue_fragment, | ||
923 | frag_ctx); | ||
924 | |||
925 | s->frag_ctx = frag_ctx; | ||
926 | |||
927 | } | ||
928 | return mlen; | ||
929 | } | ||
930 | |||
931 | static ssize_t udp_plugin_send_wrapper (void *cls, | ||
932 | const struct | ||
933 | GNUNET_PeerIdentity * | ||
934 | target, | ||
935 | const char *msgbuf, | ||
936 | size_t msgbuf_size, | ||
937 | uint32_t priority, | ||
938 | struct | ||
939 | GNUNET_TIME_Relative | ||
940 | timeout, | ||
941 | struct Session * session, | ||
942 | const void *addr, | ||
943 | size_t addrlen, | ||
944 | int force_address, | ||
945 | GNUNET_TRANSPORT_TransmitContinuation | ||
946 | cont, void *cont_cls) | ||
947 | { | ||
948 | int ret; | ||
949 | struct Session * s = NULL; | ||
950 | struct GNUNET_HELLO_Address * ha = NULL; | ||
951 | |||
952 | ha = GNUNET_HELLO_address_allocate(target, "", addr,addrlen); | ||
953 | GNUNET_assert (ha != NULL); | ||
954 | s = udp_plugin_get_session(cls, ha); | ||
955 | GNUNET_assert (s != NULL); | ||
956 | GNUNET_free (ha); | ||
957 | ret = udp_plugin_send (cls, s, msgbuf, msgbuf_size, priority, timeout, cont, cont_cls); | ||
958 | |||
959 | return ret; | ||
960 | } | ||
961 | |||
962 | |||
963 | /** | ||
964 | * Our external IP address/port mapping has changed. | ||
965 | * | ||
966 | * @param cls closure, the 'struct LocalAddrList' | ||
967 | * @param add_remove GNUNET_YES to mean the new public IP address, GNUNET_NO to mean | ||
968 | * the previous (now invalid) one | ||
969 | * @param addr either the previous or the new public IP address | ||
970 | * @param addrlen actual lenght of the address | ||
971 | */ | ||
972 | static void | ||
973 | udp_nat_port_map_callback (void *cls, int add_remove, | ||
974 | const struct sockaddr *addr, socklen_t addrlen) | ||
975 | { | ||
976 | struct Plugin *plugin = cls; | ||
977 | struct IPv4UdpAddress u4; | ||
978 | struct IPv6UdpAddress u6; | ||
979 | void *arg; | ||
980 | size_t args; | ||
981 | |||
982 | /* convert 'addr' to our internal format */ | ||
983 | switch (addr->sa_family) | ||
984 | { | ||
985 | case AF_INET: | ||
986 | GNUNET_assert (addrlen == sizeof (struct sockaddr_in)); | ||
987 | u4.ipv4_addr = ((struct sockaddr_in *) addr)->sin_addr.s_addr; | ||
988 | u4.u4_port = ((struct sockaddr_in *) addr)->sin_port; | ||
989 | arg = &u4; | ||
990 | args = sizeof (u4); | ||
991 | break; | ||
992 | case AF_INET6: | ||
993 | GNUNET_assert (addrlen == sizeof (struct sockaddr_in6)); | ||
994 | memcpy (&u6.ipv6_addr, &((struct sockaddr_in6 *) addr)->sin6_addr, | ||
995 | sizeof (struct in6_addr)); | ||
996 | u6.u6_port = ((struct sockaddr_in6 *) addr)->sin6_port; | ||
997 | arg = &u6; | ||
998 | args = sizeof (u6); | ||
999 | break; | ||
1000 | default: | ||
1001 | GNUNET_break (0); | ||
1002 | return; | ||
1003 | } | ||
1004 | /* modify our published address list */ | ||
1005 | plugin->env->notify_address (plugin->env->cls, add_remove, arg, args); | ||
1006 | } | ||
1007 | |||
1008 | |||
1009 | |||
1010 | /** | ||
1011 | * Message tokenizer has broken up an incomming message. Pass it on | ||
1012 | * to the service. | ||
1013 | * | ||
1014 | * @param cls the 'struct Plugin' | ||
1015 | * @param client the 'struct SourceInformation' | ||
1016 | * @param hdr the actual message | ||
1017 | */ | ||
1018 | static void | ||
1019 | process_inbound_tokenized_messages (void *cls, void *client, | ||
1020 | const struct GNUNET_MessageHeader *hdr) | ||
1021 | { | ||
1022 | struct Plugin *plugin = cls; | ||
1023 | struct SourceInformation *si = client; | ||
1024 | struct GNUNET_ATS_Information ats[2]; | ||
1025 | struct GNUNET_TIME_Relative delay; | ||
1026 | |||
1027 | GNUNET_assert (si->session != NULL); | ||
1028 | /* setup ATS */ | ||
1029 | ats[0].type = htonl (GNUNET_ATS_QUALITY_NET_DISTANCE); | ||
1030 | ats[0].value = htonl (1); | ||
1031 | ats[1] = si->session->ats; | ||
1032 | GNUNET_break (ntohl(ats[1].value) != GNUNET_ATS_NET_UNSPECIFIED); | ||
1033 | |||
1034 | delay = plugin->env->receive (plugin->env->cls, | ||
1035 | &si->sender, | ||
1036 | hdr, | ||
1037 | (const struct GNUNET_ATS_Information *) &ats, 2, | ||
1038 | NULL, | ||
1039 | si->arg, | ||
1040 | si->args); | ||
1041 | si->session->flow_delay_for_other_peer = delay; | ||
1042 | } | ||
1043 | |||
1044 | |||
1045 | /** | ||
1046 | * We've received a UDP Message. Process it (pass contents to main service). | ||
1047 | * | ||
1048 | * @param plugin plugin context | ||
1049 | * @param msg the message | ||
1050 | * @param sender_addr sender address | ||
1051 | * @param sender_addr_len number of bytes in sender_addr | ||
1052 | */ | ||
1053 | static void | ||
1054 | process_udp_message (struct Plugin *plugin, const struct UDPMessage *msg, | ||
1055 | const struct sockaddr *sender_addr, | ||
1056 | socklen_t sender_addr_len) | ||
1057 | { | ||
1058 | struct SourceInformation si; | ||
1059 | struct Session * s = NULL; | ||
1060 | struct IPv4UdpAddress u4; | ||
1061 | struct IPv6UdpAddress u6; | ||
1062 | struct GNUNET_ATS_Information ats; | ||
1063 | const void *arg; | ||
1064 | size_t args; | ||
1065 | |||
1066 | if (0 != ntohl (msg->reserved)) | ||
1067 | { | ||
1068 | GNUNET_break_op (0); | ||
1069 | return; | ||
1070 | } | ||
1071 | if (ntohs (msg->header.size) < | ||
1072 | sizeof (struct GNUNET_MessageHeader) + sizeof (struct UDPMessage)) | ||
1073 | { | ||
1074 | GNUNET_break_op (0); | ||
1075 | return; | ||
1076 | } | ||
1077 | |||
1078 | ats.type = htonl (GNUNET_ATS_NETWORK_TYPE); | ||
1079 | ats.value = htonl (GNUNET_ATS_NET_UNSPECIFIED); | ||
1080 | /* convert address */ | ||
1081 | switch (sender_addr->sa_family) | ||
1082 | { | ||
1083 | case AF_INET: | ||
1084 | GNUNET_assert (sender_addr_len == sizeof (struct sockaddr_in)); | ||
1085 | u4.ipv4_addr = ((struct sockaddr_in *) sender_addr)->sin_addr.s_addr; | ||
1086 | u4.u4_port = ((struct sockaddr_in *) sender_addr)->sin_port; | ||
1087 | arg = &u4; | ||
1088 | args = sizeof (u4); | ||
1089 | break; | ||
1090 | case AF_INET6: | ||
1091 | GNUNET_assert (sender_addr_len == sizeof (struct sockaddr_in6)); | ||
1092 | u6.ipv6_addr = ((struct sockaddr_in6 *) sender_addr)->sin6_addr; | ||
1093 | u6.u6_port = ((struct sockaddr_in6 *) sender_addr)->sin6_port; | ||
1094 | arg = &u6; | ||
1095 | args = sizeof (u6); | ||
1096 | break; | ||
1097 | default: | ||
1098 | GNUNET_break (0); | ||
1099 | return; | ||
1100 | } | ||
1101 | #if DEBUG_UDP | ||
1102 | LOG (GNUNET_ERROR_TYPE_DEBUG, | ||
1103 | "Received message with %u bytes from peer `%s' at `%s'\n", | ||
1104 | (unsigned int) ntohs (msg->header.size), GNUNET_i2s (&msg->sender), | ||
1105 | GNUNET_a2s (sender_addr, sender_addr_len)); | ||
1106 | #endif | ||
1107 | |||
1108 | struct GNUNET_HELLO_Address * address = GNUNET_HELLO_address_allocate(&msg->sender, "udp", arg, args); | ||
1109 | s = udp_plugin_get_session(plugin, address); | ||
1110 | GNUNET_free (address); | ||
1111 | |||
1112 | /* iterate over all embedded messages */ | ||
1113 | si.session = s; | ||
1114 | si.sender = msg->sender; | ||
1115 | si.arg = arg; | ||
1116 | si.args = args; | ||
1117 | |||
1118 | GNUNET_SERVER_mst_receive (plugin->mst, &si, (const char *) &msg[1], | ||
1119 | ntohs (msg->header.size) - | ||
1120 | sizeof (struct UDPMessage), GNUNET_YES, GNUNET_NO); | ||
1121 | } | ||
1122 | |||
1123 | |||
1124 | /** | ||
1125 | * Scan the heap for a receive context with the given address. | ||
1126 | * | ||
1127 | * @param cls the 'struct FindReceiveContext' | ||
1128 | * @param node internal node of the heap | ||
1129 | * @param element value stored at the node (a 'struct ReceiveContext') | ||
1130 | * @param cost cost associated with the node | ||
1131 | * @return GNUNET_YES if we should continue to iterate, | ||
1132 | * GNUNET_NO if not. | ||
1133 | */ | ||
1134 | static int | ||
1135 | find_receive_context (void *cls, struct GNUNET_CONTAINER_HeapNode *node, | ||
1136 | void *element, GNUNET_CONTAINER_HeapCostType cost) | ||
1137 | { | ||
1138 | struct FindReceiveContext *frc = cls; | ||
1139 | struct DefragContext *e = element; | ||
1140 | |||
1141 | if ((frc->addr_len == e->addr_len) && | ||
1142 | (0 == memcmp (frc->addr, e->src_addr, frc->addr_len))) | ||
1143 | { | ||
1144 | frc->rc = e; | ||
1145 | return GNUNET_NO; | ||
1146 | } | ||
1147 | return GNUNET_YES; | ||
1148 | } | ||
1149 | |||
1150 | |||
1151 | /** | ||
1152 | * Process a defragmented message. | ||
1153 | * | ||
1154 | * @param cls the 'struct ReceiveContext' | ||
1155 | * @param msg the message | ||
1156 | */ | ||
1157 | static void | ||
1158 | fragment_msg_proc (void *cls, const struct GNUNET_MessageHeader *msg) | ||
1159 | { | ||
1160 | struct DefragContext *rc = cls; | ||
1161 | |||
1162 | if (ntohs (msg->type) != GNUNET_MESSAGE_TYPE_TRANSPORT_UDP_MESSAGE) | ||
1163 | { | ||
1164 | GNUNET_break (0); | ||
1165 | return; | ||
1166 | } | ||
1167 | if (ntohs (msg->size) < sizeof (struct UDPMessage)) | ||
1168 | { | ||
1169 | GNUNET_break (0); | ||
1170 | return; | ||
1171 | } | ||
1172 | process_udp_message (rc->plugin, (const struct UDPMessage *) msg, | ||
1173 | rc->src_addr, rc->addr_len); | ||
1174 | } | ||
1175 | |||
1176 | struct LookupContext | ||
1177 | { | ||
1178 | const struct sockaddr * addr; | ||
1179 | size_t addrlen; | ||
1180 | |||
1181 | struct Session *res; | ||
1182 | }; | ||
1183 | |||
1184 | static int | ||
1185 | lookup_session_by_addr_it (void *cls, const GNUNET_HashCode * key, void *value) | ||
1186 | { | ||
1187 | struct LookupContext *l_ctx = cls; | ||
1188 | struct Session * s = value; | ||
1189 | |||
1190 | if ((s->addrlen == l_ctx->addrlen) && | ||
1191 | (0 == memcmp (s->sock_addr, l_ctx->addr, s->addrlen))) | ||
1192 | { | ||
1193 | l_ctx->res = s; | ||
1194 | return GNUNET_NO; | ||
1195 | } | ||
1196 | return GNUNET_YES; | ||
1197 | } | ||
1198 | |||
1199 | /** | ||
1200 | * Transmit an acknowledgement. | ||
1201 | * | ||
1202 | * @param cls the 'struct ReceiveContext' | ||
1203 | * @param id message ID (unused) | ||
1204 | * @param msg ack to transmit | ||
1205 | */ | ||
1206 | static void | ||
1207 | ack_proc (void *cls, uint32_t id, const struct GNUNET_MessageHeader *msg) | ||
1208 | { | ||
1209 | struct DefragContext *rc = cls; | ||
1210 | |||
1211 | size_t msize = sizeof (struct UDP_ACK_Message) + ntohs (msg->size); | ||
1212 | struct UDP_ACK_Message *udp_ack; | ||
1213 | uint32_t delay = 0; | ||
1214 | struct UDPMessageWrapper *udpw; | ||
1215 | struct Session *s; | ||
1216 | |||
1217 | struct LookupContext l_ctx; | ||
1218 | l_ctx.addr = rc->src_addr; | ||
1219 | l_ctx.addrlen = rc->addr_len; | ||
1220 | l_ctx.res = NULL; | ||
1221 | GNUNET_CONTAINER_multihashmap_iterate (rc->plugin->sessions, | ||
1222 | &lookup_session_by_addr_it, | ||
1223 | &l_ctx); | ||
1224 | s = l_ctx.res; | ||
1225 | |||
1226 | GNUNET_assert (s != NULL); | ||
1227 | |||
1228 | if (s->flow_delay_for_other_peer.rel_value <= UINT32_MAX) | ||
1229 | delay = s->flow_delay_for_other_peer.rel_value; | ||
1230 | |||
1231 | #if DEBUG_UDP | ||
1232 | LOG (GNUNET_ERROR_TYPE_DEBUG, | ||
1233 | "Sending ACK to `%s' including delay of %u ms\n", | ||
1234 | GNUNET_a2s (rc->src_addr, | ||
1235 | (rc->src_addr->sa_family == | ||
1236 | AF_INET) ? sizeof (struct sockaddr_in) : sizeof (struct | ||
1237 | sockaddr_in6)), | ||
1238 | delay); | ||
1239 | #endif | ||
1240 | udpw = GNUNET_malloc (sizeof (struct UDPMessageWrapper) + msize); | ||
1241 | udpw->cont = NULL; | ||
1242 | udpw->cont_cls = NULL; | ||
1243 | udpw->frag_ctx = NULL; | ||
1244 | udpw->msg_size = msize; | ||
1245 | udpw->session = s; | ||
1246 | udpw->timeout = GNUNET_TIME_absolute_get_forever(); | ||
1247 | udpw->udp = (char *)&udpw[1]; | ||
1248 | |||
1249 | udp_ack = (struct UDP_ACK_Message *) udpw->udp; | ||
1250 | udp_ack->header.size = htons ((uint16_t) msize); | ||
1251 | udp_ack->header.type = htons (GNUNET_MESSAGE_TYPE_TRANSPORT_UDP_ACK); | ||
1252 | udp_ack->delay = htonl (delay); | ||
1253 | udp_ack->sender = *rc->plugin->env->my_identity; | ||
1254 | memcpy (&udp_ack[1], msg, ntohs (msg->size)); | ||
1255 | |||
1256 | GNUNET_CONTAINER_DLL_insert(rc->plugin->msg_head, rc->plugin->msg_tail, udpw); | ||
1257 | } | ||
1258 | |||
1259 | |||
1260 | static void read_process_msg (struct Plugin *plugin, | ||
1261 | const struct GNUNET_MessageHeader *msg, | ||
1262 | char *addr, | ||
1263 | socklen_t fromlen) | ||
1264 | { | ||
1265 | if (ntohs (msg->size) < sizeof (struct UDPMessage)) | ||
1266 | { | ||
1267 | GNUNET_break_op (0); | ||
1268 | return; | ||
1269 | } | ||
1270 | process_udp_message (plugin, (const struct UDPMessage *) msg, | ||
1271 | (const struct sockaddr *) addr, fromlen); | ||
1272 | return; | ||
1273 | } | ||
1274 | |||
1275 | static void read_process_ack (struct Plugin *plugin, | ||
1276 | const struct GNUNET_MessageHeader *msg, | ||
1277 | char *addr, | ||
1278 | socklen_t fromlen) | ||
1279 | { | ||
1280 | const struct GNUNET_MessageHeader *ack; | ||
1281 | const struct UDP_ACK_Message *udp_ack; | ||
1282 | struct LookupContext l_ctx; | ||
1283 | struct Session *s = NULL; | ||
1284 | struct GNUNET_TIME_Relative flow_delay; | ||
1285 | |||
1286 | if (ntohs (msg->size) < | ||
1287 | sizeof (struct UDP_ACK_Message) + sizeof (struct GNUNET_MessageHeader)) | ||
1288 | { | ||
1289 | GNUNET_break_op (0); | ||
1290 | return; | ||
1291 | } | ||
1292 | |||
1293 | udp_ack = (const struct UDP_ACK_Message *) msg; | ||
1294 | |||
1295 | l_ctx.addr = (const struct sockaddr *) addr; | ||
1296 | l_ctx.addrlen = fromlen; | ||
1297 | l_ctx.res = NULL; | ||
1298 | GNUNET_CONTAINER_multihashmap_iterate (plugin->sessions, | ||
1299 | &lookup_session_by_addr_it, | ||
1300 | &l_ctx); | ||
1301 | s = l_ctx.res; | ||
1302 | |||
1303 | if ((s == NULL) || (s->frag_ctx == NULL)) | ||
1304 | return; | ||
1305 | |||
1306 | flow_delay.rel_value = (uint64_t) ntohl (udp_ack->delay); | ||
1307 | LOG (GNUNET_ERROR_TYPE_DEBUG, "We received a sending delay of %llu\n", | ||
1308 | flow_delay.rel_value); | ||
1309 | s->flow_delay_from_other_peer = | ||
1310 | GNUNET_TIME_relative_to_absolute (flow_delay); | ||
1311 | |||
1312 | ack = (const struct GNUNET_MessageHeader *) &udp_ack[1]; | ||
1313 | if (ntohs (ack->size) != | ||
1314 | ntohs (msg->size) - sizeof (struct UDP_ACK_Message)) | ||
1315 | { | ||
1316 | GNUNET_break_op (0); | ||
1317 | return; | ||
1318 | } | ||
1319 | |||
1320 | if (GNUNET_OK != GNUNET_FRAGMENT_process_ack (s->frag_ctx->frag, ack)) | ||
1321 | { | ||
1322 | #if DEBUG_UDP | ||
1323 | LOG (GNUNET_ERROR_TYPE_DEBUG, | ||
1324 | "UDP processes %u-byte acknowledgement from `%s' at `%s'\n", | ||
1325 | (unsigned int) ntohs (msg->size), GNUNET_i2s (&udp_ack->sender), | ||
1326 | GNUNET_a2s ((const struct sockaddr *) addr, fromlen)); | ||
1327 | #endif | ||
1328 | return; | ||
1329 | } | ||
1330 | |||
1331 | #if DEBUG_UDP | ||
1332 | LOG (GNUNET_ERROR_TYPE_DEBUG, | ||
1333 | "FULL MESSAGE ACKed\n", | ||
1334 | (unsigned int) ntohs (msg->size), GNUNET_i2s (&udp_ack->sender), | ||
1335 | GNUNET_a2s ((const struct sockaddr *) addr, fromlen)); | ||
1336 | #endif | ||
1337 | s->last_expected_delay = GNUNET_FRAGMENT_context_destroy (s->frag_ctx->frag); | ||
1338 | |||
1339 | struct UDPMessageWrapper * udpw = plugin->msg_head; | ||
1340 | while (udpw!= NULL) | ||
1341 | { | ||
1342 | if ((udpw->frag_ctx != NULL) && (udpw->frag_ctx == s->frag_ctx)) | ||
1343 | { | ||
1344 | GNUNET_CONTAINER_DLL_remove(plugin->msg_head, plugin->msg_tail, udpw); | ||
1345 | GNUNET_free (udpw); | ||
1346 | } | ||
1347 | udpw = udpw->next; | ||
1348 | } | ||
1349 | |||
1350 | if (s->frag_ctx->cont != NULL) | ||
1351 | s->frag_ctx->cont | ||
1352 | (s->frag_ctx->cont_cls, &udp_ack->sender, GNUNET_OK); | ||
1353 | GNUNET_free (s->frag_ctx); | ||
1354 | s->frag_ctx = NULL; | ||
1355 | return; | ||
1356 | } | ||
1357 | |||
1358 | static void read_process_fragment (struct Plugin *plugin, | ||
1359 | const struct GNUNET_MessageHeader *msg, | ||
1360 | char *addr, | ||
1361 | socklen_t fromlen) | ||
1362 | { | ||
1363 | struct DefragContext *d_ctx; | ||
1364 | struct GNUNET_TIME_Absolute now; | ||
1365 | struct FindReceiveContext frc; | ||
1366 | |||
1367 | |||
1368 | frc.rc = NULL; | ||
1369 | frc.addr = (const struct sockaddr *) addr; | ||
1370 | frc.addr_len = fromlen; | ||
1371 | |||
1372 | #if DEBUG_UDP | ||
1373 | LOG (GNUNET_ERROR_TYPE_DEBUG, "UDP processes %u-byte fragment from `%s'\n", | ||
1374 | (unsigned int) ntohs (msg->size), | ||
1375 | GNUNET_a2s ((const struct sockaddr *) addr, fromlen)); | ||
1376 | #endif | ||
1377 | |||
1378 | /* Lookup existing receive context for this address */ | ||
1379 | GNUNET_CONTAINER_heap_iterate (plugin->defrag_ctxs, | ||
1380 | &find_receive_context, | ||
1381 | &frc); | ||
1382 | now = GNUNET_TIME_absolute_get (); | ||
1383 | d_ctx = frc.rc; | ||
1384 | |||
1385 | if (d_ctx == NULL) | ||
1386 | { | ||
1387 | /* Create a new defragmentation context */ | ||
1388 | d_ctx = GNUNET_malloc (sizeof (struct DefragContext) + fromlen); | ||
1389 | memcpy (&d_ctx[1], addr, fromlen); | ||
1390 | d_ctx->src_addr = (const struct sockaddr *) &d_ctx[1]; | ||
1391 | d_ctx->addr_len = fromlen; | ||
1392 | d_ctx->plugin = plugin; | ||
1393 | d_ctx->defrag = | ||
1394 | GNUNET_DEFRAGMENT_context_create (plugin->env->stats, UDP_MTU, | ||
1395 | UDP_MAX_MESSAGES_IN_DEFRAG, d_ctx, | ||
1396 | &fragment_msg_proc, &ack_proc); | ||
1397 | d_ctx->hnode = | ||
1398 | GNUNET_CONTAINER_heap_insert (plugin->defrag_ctxs, d_ctx, | ||
1399 | (GNUNET_CONTAINER_HeapCostType) | ||
1400 | now.abs_value); | ||
1401 | #if DEBUG_UDP | ||
1402 | LOG (GNUNET_ERROR_TYPE_DEBUG, "Created new defragmentation context for %u-byte fragment from `%s'\n", | ||
1403 | (unsigned int) ntohs (msg->size), | ||
1404 | GNUNET_a2s ((const struct sockaddr *) addr, fromlen)); | ||
1405 | #endif | ||
1406 | } | ||
1407 | else | ||
1408 | { | ||
1409 | #if DEBUG_UDP | ||
1410 | LOG (GNUNET_ERROR_TYPE_DEBUG, "Found existing defragmentation context for %u-byte fragment from `%s'\n", | ||
1411 | (unsigned int) ntohs (msg->size), | ||
1412 | GNUNET_a2s ((const struct sockaddr *) addr, fromlen)); | ||
1413 | #endif | ||
1414 | } | ||
1415 | |||
1416 | if (GNUNET_OK == GNUNET_DEFRAGMENT_process_fragment (d_ctx->defrag, msg)) | ||
1417 | { | ||
1418 | /* keep this 'rc' from expiring */ | ||
1419 | GNUNET_CONTAINER_heap_update_cost (plugin->defrag_ctxs, d_ctx->hnode, | ||
1420 | (GNUNET_CONTAINER_HeapCostType) | ||
1421 | now.abs_value); | ||
1422 | } | ||
1423 | if (GNUNET_CONTAINER_heap_get_size (plugin->defrag_ctxs) > | ||
1424 | UDP_MAX_SENDER_ADDRESSES_WITH_DEFRAG) | ||
1425 | { | ||
1426 | /* remove 'rc' that was inactive the longest */ | ||
1427 | d_ctx = GNUNET_CONTAINER_heap_remove_root (plugin->defrag_ctxs); | ||
1428 | GNUNET_assert (NULL != d_ctx); | ||
1429 | GNUNET_DEFRAGMENT_context_destroy (d_ctx->defrag); | ||
1430 | GNUNET_free (d_ctx); | ||
1431 | } | ||
1432 | } | ||
1433 | |||
1434 | /** | ||
1435 | * Read and process a message from the given socket. | ||
1436 | * | ||
1437 | * @param plugin the overall plugin | ||
1438 | * @param rsock socket to read from | ||
1439 | */ | ||
1440 | static void | ||
1441 | udp_select_read (struct Plugin *plugin, struct GNUNET_NETWORK_Handle *rsock) | ||
1442 | { | ||
1443 | socklen_t fromlen; | ||
1444 | char addr[32]; | ||
1445 | char buf[65536]; | ||
1446 | ssize_t size; | ||
1447 | const struct GNUNET_MessageHeader *msg; | ||
1448 | |||
1449 | fromlen = sizeof (addr); | ||
1450 | memset (&addr, 0, sizeof (addr)); | ||
1451 | size = GNUNET_NETWORK_socket_recvfrom (rsock, buf, sizeof (buf), | ||
1452 | (struct sockaddr *) &addr, &fromlen); | ||
1453 | |||
1454 | if (size < sizeof (struct GNUNET_MessageHeader)) | ||
1455 | { | ||
1456 | GNUNET_break_op (0); | ||
1457 | return; | ||
1458 | } | ||
1459 | msg = (const struct GNUNET_MessageHeader *) buf; | ||
1460 | |||
1461 | LOG (GNUNET_ERROR_TYPE_DEBUG, | ||
1462 | "UDP received %u-byte message from `%s' type %i\n", (unsigned int) size, | ||
1463 | GNUNET_a2s ((const struct sockaddr *) addr, fromlen), ntohs (msg->type)); | ||
1464 | |||
1465 | if (size != ntohs (msg->size)) | ||
1466 | { | ||
1467 | GNUNET_break_op (0); | ||
1468 | return; | ||
1469 | } | ||
1470 | |||
1471 | switch (ntohs (msg->type)) | ||
1472 | { | ||
1473 | case GNUNET_MESSAGE_TYPE_TRANSPORT_BROADCAST_BEACON: | ||
1474 | udp_broadcast_receive (plugin, &buf, size, addr, fromlen); | ||
1475 | return; | ||
1476 | |||
1477 | case GNUNET_MESSAGE_TYPE_TRANSPORT_UDP_MESSAGE: | ||
1478 | read_process_msg (plugin, msg, addr, fromlen); | ||
1479 | return; | ||
1480 | |||
1481 | case GNUNET_MESSAGE_TYPE_TRANSPORT_UDP_ACK: | ||
1482 | read_process_ack (plugin, msg, addr, fromlen);; | ||
1483 | return; | ||
1484 | |||
1485 | case GNUNET_MESSAGE_TYPE_FRAGMENT: | ||
1486 | read_process_fragment (plugin, msg, addr, fromlen); | ||
1487 | return; | ||
1488 | |||
1489 | default: | ||
1490 | GNUNET_break_op (0); | ||
1491 | return; | ||
1492 | } | ||
1493 | } | ||
1494 | |||
1495 | size_t | ||
1496 | udp_select_send (struct Plugin *plugin) | ||
1497 | { | ||
1498 | ssize_t sent; | ||
1499 | size_t slen; | ||
1500 | struct GNUNET_TIME_Absolute max; | ||
1501 | struct GNUNET_TIME_Absolute ; | ||
1502 | |||
1503 | struct UDPMessageWrapper *udpw = plugin->msg_head; | ||
1504 | const struct sockaddr * sa = udpw->session->sock_addr; | ||
1505 | |||
1506 | max = GNUNET_TIME_absolute_max(udpw->timeout, GNUNET_TIME_absolute_get()); | ||
1507 | |||
1508 | while (udpw != NULL) | ||
1509 | { | ||
1510 | if (max.abs_value != udpw->timeout.abs_value) | ||
1511 | { | ||
1512 | /* Message timed out */ | ||
1513 | |||
1514 | if (udpw->cont != NULL) | ||
1515 | udpw->cont (udpw->cont_cls, &udpw->session->target, GNUNET_SYSERR); | ||
1516 | if (udpw->frag_ctx != NULL) | ||
1517 | { | ||
1518 | #if DEBUG_UDP | ||
1519 | GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Fragmented message for peer `%s' with size %u timed out\n", | ||
1520 | GNUNET_i2s(&udpw->session->target), udpw->frag_ctx->bytes_to_send); | ||
1521 | #endif | ||
1522 | udpw->session->last_expected_delay = GNUNET_FRAGMENT_context_destroy(udpw->frag_ctx->frag); | ||
1523 | GNUNET_free (udpw->frag_ctx); | ||
1524 | udpw->session->frag_ctx = NULL; | ||
1525 | } | ||
1526 | else | ||
1527 | { | ||
1528 | #if DEBUG_UDP | ||
1529 | GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Message for peer `%s' with size %u timed out\n", | ||
1530 | GNUNET_i2s(&udpw->session->target), udpw->msg_size); | ||
1531 | #endif | ||
1532 | } | ||
1533 | |||
1534 | GNUNET_CONTAINER_DLL_remove(plugin->msg_head, plugin->msg_tail, udpw); | ||
1535 | GNUNET_free (udpw); | ||
1536 | udpw = plugin->msg_head; | ||
1537 | } | ||
1538 | else | ||
1539 | { | ||
1540 | struct GNUNET_TIME_Relative delta = GNUNET_TIME_absolute_get_remaining (udpw->session->flow_delay_from_other_peer); | ||
1541 | if (delta.rel_value == 0) | ||
1542 | { | ||
1543 | /* this message is not delayed */ | ||
1544 | GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Message for peer `%s' (%u bytes) is not delayed \n", | ||
1545 | GNUNET_i2s(&udpw->session->target), udpw->msg_size); | ||
1546 | break; | ||
1547 | } | ||
1548 | else | ||
1549 | { | ||
1550 | /* this message is delayed, try next */ | ||
1551 | GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Message for peer `%s' (%u bytes) is delayed for %llu \n", | ||
1552 | GNUNET_i2s(&udpw->session->target), udpw->msg_size, | ||
1553 | delta); | ||
1554 | udpw = udpw->next; | ||
1555 | } | ||
1556 | } | ||
1557 | |||
1558 | } | ||
1559 | |||
1560 | if (udpw == NULL) | ||
1561 | { | ||
1562 | /* No message left */ | ||
1563 | return 0; | ||
1564 | } | ||
1565 | |||
1566 | switch (sa->sa_family) | ||
1567 | { | ||
1568 | case AF_INET: | ||
1569 | if (NULL == plugin->sockv4) | ||
1570 | return 0; | ||
1571 | sent = | ||
1572 | GNUNET_NETWORK_socket_sendto (plugin->sockv4, udpw->udp, udpw->msg_size, | ||
1573 | sa, slen = sizeof (struct sockaddr_in)); | ||
1574 | break; | ||
1575 | case AF_INET6: | ||
1576 | if (NULL == plugin->sockv6) | ||
1577 | return 0; | ||
1578 | sent = | ||
1579 | GNUNET_NETWORK_socket_sendto (plugin->sockv6, udpw->udp, udpw->msg_size, | ||
1580 | sa, slen = sizeof (struct sockaddr_in6)); | ||
1581 | break; | ||
1582 | default: | ||
1583 | GNUNET_break (0); | ||
1584 | return 0; | ||
1585 | } | ||
1586 | if (GNUNET_SYSERR == sent) | ||
1587 | { | ||
1588 | GNUNET_log_strerror (GNUNET_ERROR_TYPE_ERROR, "sendto"); | ||
1589 | LOG (GNUNET_ERROR_TYPE_DEBUG, | ||
1590 | "UDP transmitted %u-byte message to %s (%d: %s)\n", | ||
1591 | (unsigned int) (udpw->msg_size), GNUNET_a2s (sa, slen), (int) sent, | ||
1592 | (sent < 0) ? STRERROR (errno) : "ok"); | ||
1593 | if (udpw->cont != NULL) | ||
1594 | udpw->cont (udpw->cont_cls, &udpw->session->target, GNUNET_SYSERR); | ||
1595 | } | ||
1596 | LOG (GNUNET_ERROR_TYPE_DEBUG, | ||
1597 | "UDP transmitted %u-byte message to %s (%d: %s)\n", | ||
1598 | (unsigned int) (udpw->msg_size), GNUNET_a2s (sa, slen), (int) sent, | ||
1599 | (sent < 0) ? STRERROR (errno) : "ok"); | ||
1600 | |||
1601 | /* This was just a message fragment */ | ||
1602 | if (udpw->frag_ctx != NULL) | ||
1603 | { | ||
1604 | GNUNET_FRAGMENT_context_transmission_done (udpw->frag_ctx->frag); | ||
1605 | } | ||
1606 | /* This was a complete message*/ | ||
1607 | else | ||
1608 | { | ||
1609 | if (udpw->cont != NULL) | ||
1610 | udpw->cont (udpw->cont_cls, &udpw->session->target, GNUNET_OK); | ||
1611 | } | ||
1612 | |||
1613 | GNUNET_CONTAINER_DLL_remove(plugin->msg_head, plugin->msg_tail, udpw); | ||
1614 | GNUNET_free (udpw); | ||
1615 | |||
1616 | return sent; | ||
1617 | } | ||
1618 | |||
1619 | /** | ||
1620 | * We have been notified that our readset has something to read. We don't | ||
1621 | * know which socket needs to be read, so we have to check each one | ||
1622 | * Then reschedule this function to be called again once more is available. | ||
1623 | * | ||
1624 | * @param cls the plugin handle | ||
1625 | * @param tc the scheduling context (for rescheduling this function again) | ||
1626 | */ | ||
1627 | static void | ||
1628 | udp_plugin_select (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc) | ||
1629 | { | ||
1630 | struct Plugin *plugin = cls; | ||
1631 | |||
1632 | plugin->select_task = GNUNET_SCHEDULER_NO_TASK; | ||
1633 | if ((tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN) != 0) | ||
1634 | return; | ||
1635 | |||
1636 | if ((tc->reason & GNUNET_SCHEDULER_REASON_READ_READY) != 0) | ||
1637 | { | ||
1638 | if ((NULL != plugin->sockv4) && | ||
1639 | (GNUNET_NETWORK_fdset_isset (tc->read_ready, plugin->sockv4))) | ||
1640 | udp_select_read (plugin, plugin->sockv4); | ||
1641 | if ((NULL != plugin->sockv6) && | ||
1642 | (GNUNET_NETWORK_fdset_isset (tc->read_ready, plugin->sockv6))) | ||
1643 | udp_select_read (plugin, plugin->sockv6); | ||
1644 | } | ||
1645 | |||
1646 | if ((tc->reason & GNUNET_SCHEDULER_REASON_WRITE_READY) != 0) | ||
1647 | { | ||
1648 | if (plugin->msg_head != NULL) | ||
1649 | udp_select_send (plugin); | ||
1650 | } | ||
1651 | |||
1652 | plugin->select_task = GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_DEFAULT, | ||
1653 | GNUNET_SCHEDULER_NO_TASK, | ||
1654 | GNUNET_TIME_UNIT_FOREVER_REL, plugin->rs, | ||
1655 | plugin->ws, &udp_plugin_select, plugin); | ||
1656 | |||
1657 | } | ||
1658 | |||
1659 | |||
1660 | static int | ||
1661 | setup_sockets (struct Plugin *plugin, struct sockaddr_in6 *serverAddrv6, struct sockaddr_in *serverAddrv4) | ||
1662 | { | ||
1663 | int tries; | ||
1664 | int sockets_created = 0; | ||
1665 | struct sockaddr *serverAddr; | ||
1666 | struct sockaddr *addrs[2]; | ||
1667 | socklen_t addrlens[2]; | ||
1668 | socklen_t addrlen; | ||
1669 | |||
1670 | /* Create IPv6 socket */ | ||
1671 | if (plugin->enable_ipv6 == GNUNET_YES) | ||
1672 | { | ||
1673 | plugin->sockv6 = GNUNET_NETWORK_socket_create (PF_INET6, SOCK_DGRAM, 0); | ||
1674 | if (NULL == plugin->sockv6) | ||
1675 | { | ||
1676 | GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING, "socket"); | ||
1677 | } | ||
1678 | else | ||
1679 | { | ||
1680 | #if HAVE_SOCKADDR_IN_SIN_LEN | ||
1681 | serverAddrv6.sin6_len = sizeof (serverAddrv6); | ||
1682 | #endif | ||
1683 | serverAddrv6->sin6_family = AF_INET6; | ||
1684 | serverAddrv6->sin6_addr = in6addr_any; | ||
1685 | serverAddrv6->sin6_port = htons (plugin->port); | ||
1686 | addrlen = sizeof (struct sockaddr_in6); | ||
1687 | serverAddr = (struct sockaddr *) serverAddrv6; | ||
1688 | #if DEBUG_UDP | ||
1689 | LOG (GNUNET_ERROR_TYPE_DEBUG, "Binding to IPv6 port %d\n", | ||
1690 | ntohs (serverAddrv6->sin6_port)); | ||
1691 | #endif | ||
1692 | tries = 0; | ||
1693 | while (GNUNET_NETWORK_socket_bind (plugin->sockv6, serverAddr, addrlen) != | ||
1694 | GNUNET_OK) | ||
1695 | { | ||
1696 | serverAddrv6->sin6_port = htons (GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_STRONG, 33537) + 32000); /* Find a good, non-root port */ | ||
1697 | #if DEBUG_UDP | ||
1698 | LOG (GNUNET_ERROR_TYPE_DEBUG, | ||
1699 | "IPv6 Binding failed, trying new port %d\n", | ||
1700 | ntohs (serverAddrv6->sin6_port)); | ||
1701 | #endif | ||
1702 | tries++; | ||
1703 | if (tries > 10) | ||
1704 | { | ||
1705 | GNUNET_NETWORK_socket_close (plugin->sockv6); | ||
1706 | plugin->sockv6 = NULL; | ||
1707 | break; | ||
1708 | } | ||
1709 | } | ||
1710 | if (plugin->sockv6 != NULL) | ||
1711 | { | ||
1712 | #if DEBUG_UDP | ||
1713 | LOG (GNUNET_ERROR_TYPE_DEBUG, | ||
1714 | "IPv6 socket created on port %d\n", | ||
1715 | ntohs (serverAddrv6->sin6_port)); | ||
1716 | #endif | ||
1717 | addrs[sockets_created] = (struct sockaddr *) serverAddrv6; | ||
1718 | addrlens[sockets_created] = sizeof (struct sockaddr_in6); | ||
1719 | sockets_created++; | ||
1720 | } | ||
1721 | } | ||
1722 | } | ||
1723 | |||
1724 | /* Create IPv4 socket */ | ||
1725 | plugin->sockv4 = GNUNET_NETWORK_socket_create (PF_INET, SOCK_DGRAM, 0); | ||
1726 | if (NULL == plugin->sockv4) | ||
1727 | { | ||
1728 | GNUNET_log_strerror (GNUNET_ERROR_TYPE_WARNING, "socket"); | ||
1729 | } | ||
1730 | else | ||
1731 | { | ||
1732 | #if HAVE_SOCKADDR_IN_SIN_LEN | ||
1733 | serverAddrv4.sin_len = sizeof (serverAddrv4); | ||
1734 | #endif | ||
1735 | serverAddrv4->sin_family = AF_INET; | ||
1736 | serverAddrv4->sin_addr.s_addr = INADDR_ANY; | ||
1737 | serverAddrv4->sin_port = htons (plugin->port); | ||
1738 | addrlen = sizeof (struct sockaddr_in); | ||
1739 | serverAddr = (struct sockaddr *) serverAddrv4; | ||
1740 | |||
1741 | #if DEBUG_UDP | ||
1742 | LOG (GNUNET_ERROR_TYPE_DEBUG, "Binding to IPv4 port %d\n", | ||
1743 | ntohs (serverAddrv4->sin_port)); | ||
1744 | #endif | ||
1745 | tries = 0; | ||
1746 | while (GNUNET_NETWORK_socket_bind (plugin->sockv4, serverAddr, addrlen) != | ||
1747 | GNUNET_OK) | ||
1748 | { | ||
1749 | serverAddrv4->sin_port = htons (GNUNET_CRYPTO_random_u32 (GNUNET_CRYPTO_QUALITY_STRONG, 33537) + 32000); /* Find a good, non-root port */ | ||
1750 | #if DEBUG_UDP | ||
1751 | LOG (GNUNET_ERROR_TYPE_DEBUG, "IPv4 Binding failed, trying new port %d\n", | ||
1752 | ntohs (serverAddrv4->sin_port)); | ||
1753 | #endif | ||
1754 | tries++; | ||
1755 | if (tries > 10) | ||
1756 | { | ||
1757 | GNUNET_NETWORK_socket_close (plugin->sockv4); | ||
1758 | plugin->sockv4 = NULL; | ||
1759 | break; | ||
1760 | } | ||
1761 | } | ||
1762 | if (plugin->sockv4 != NULL) | ||
1763 | { | ||
1764 | addrs[sockets_created] = (struct sockaddr *) serverAddrv4; | ||
1765 | addrlens[sockets_created] = sizeof (struct sockaddr_in); | ||
1766 | sockets_created++; | ||
1767 | } | ||
1768 | } | ||
1769 | |||
1770 | /* Create file descriptors */ | ||
1771 | plugin->rs = GNUNET_NETWORK_fdset_create (); | ||
1772 | plugin->ws = GNUNET_NETWORK_fdset_create (); | ||
1773 | GNUNET_NETWORK_fdset_zero (plugin->rs); | ||
1774 | GNUNET_NETWORK_fdset_zero (plugin->ws); | ||
1775 | if (NULL != plugin->sockv4) | ||
1776 | { | ||
1777 | GNUNET_NETWORK_fdset_set (plugin->rs, plugin->sockv4); | ||
1778 | GNUNET_NETWORK_fdset_set (plugin->ws, plugin->sockv4); | ||
1779 | } | ||
1780 | if (NULL != plugin->sockv6) | ||
1781 | { | ||
1782 | GNUNET_NETWORK_fdset_set (plugin->rs, plugin->sockv6); | ||
1783 | GNUNET_NETWORK_fdset_set (plugin->ws, plugin->sockv6); | ||
1784 | } | ||
1785 | |||
1786 | if (sockets_created == 0) | ||
1787 | GNUNET_log (GNUNET_ERROR_TYPE_WARNING, _("Failed to open UDP sockets\n")); | ||
1788 | |||
1789 | plugin->select_task = | ||
1790 | GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_DEFAULT, | ||
1791 | GNUNET_SCHEDULER_NO_TASK, | ||
1792 | GNUNET_TIME_UNIT_FOREVER_REL, plugin->rs, | ||
1793 | plugin->ws, &udp_plugin_select, plugin); | ||
1794 | |||
1795 | plugin->nat = GNUNET_NAT_register (plugin->env->cfg, | ||
1796 | GNUNET_NO, plugin->port, | ||
1797 | sockets_created, | ||
1798 | (const struct sockaddr **) addrs, addrlens, | ||
1799 | &udp_nat_port_map_callback, NULL, plugin); | ||
1800 | |||
1801 | return sockets_created; | ||
1802 | } | ||
1803 | |||
1804 | |||
1805 | /** | ||
1806 | * The exported method. Makes the core api available via a global and | ||
1807 | * returns the udp transport API. | ||
1808 | * | ||
1809 | * @param cls our 'struct GNUNET_TRANSPORT_PluginEnvironment' | ||
1810 | * @return our 'struct GNUNET_TRANSPORT_PluginFunctions' | ||
1811 | */ | ||
1812 | void * | ||
1813 | libgnunet_plugin_transport_udp_init (void *cls) | ||
1814 | { | ||
1815 | struct GNUNET_TRANSPORT_PluginEnvironment *env = cls; | ||
1816 | struct GNUNET_TRANSPORT_PluginFunctions *api; | ||
1817 | struct Plugin *plugin; | ||
1818 | |||
1819 | unsigned long long port; | ||
1820 | unsigned long long aport; | ||
1821 | unsigned long long broadcast; | ||
1822 | unsigned long long udp_max_bps; | ||
1823 | unsigned long long enable_v6; | ||
1824 | char * bind4_address; | ||
1825 | char * bind6_address; | ||
1826 | struct GNUNET_TIME_Relative interval; | ||
1827 | |||
1828 | struct sockaddr_in serverAddrv4; | ||
1829 | struct sockaddr_in6 serverAddrv6; | ||
1830 | |||
1831 | int res; | ||
1832 | |||
1833 | /* Get port number */ | ||
1834 | if (GNUNET_OK != | ||
1835 | GNUNET_CONFIGURATION_get_value_number (env->cfg, "transport-udp", "PORT", | ||
1836 | &port)) | ||
1837 | port = 2086; | ||
1838 | if (GNUNET_OK != | ||
1839 | GNUNET_CONFIGURATION_get_value_number (env->cfg, "transport-udp", | ||
1840 | "ADVERTISED_PORT", &aport)) | ||
1841 | aport = port; | ||
1842 | if (port > 65535) | ||
1843 | { | ||
1844 | LOG (GNUNET_ERROR_TYPE_WARNING, | ||
1845 | _("Given `%s' option is out of range: %llu > %u\n"), "PORT", port, | ||
1846 | 65535); | ||
1847 | return NULL; | ||
1848 | } | ||
1849 | |||
1850 | /* Protocols */ | ||
1851 | if ((GNUNET_YES == | ||
1852 | GNUNET_CONFIGURATION_get_value_yesno (env->cfg, "nat", | ||
1853 | "DISABLEV6"))) | ||
1854 | { | ||
1855 | enable_v6 = GNUNET_NO; | ||
1856 | } | ||
1857 | else | ||
1858 | enable_v6 = GNUNET_YES; | ||
1859 | |||
1860 | |||
1861 | /* Addresses */ | ||
1862 | memset (&serverAddrv6, 0, sizeof (serverAddrv6)); | ||
1863 | memset (&serverAddrv4, 0, sizeof (serverAddrv4)); | ||
1864 | |||
1865 | if (GNUNET_YES == | ||
1866 | GNUNET_CONFIGURATION_get_value_string (env->cfg, "transport-udp", | ||
1867 | "BINDTO", &bind4_address)) | ||
1868 | { | ||
1869 | LOG (GNUNET_ERROR_TYPE_DEBUG, | ||
1870 | "Binding udp plugin to specific address: `%s'\n", | ||
1871 | bind4_address); | ||
1872 | if (1 != inet_pton (AF_INET, bind4_address, &serverAddrv4.sin_addr)) | ||
1873 | { | ||
1874 | GNUNET_free (bind4_address); | ||
1875 | return NULL; | ||
1876 | } | ||
1877 | } | ||
1878 | |||
1879 | if (GNUNET_YES == | ||
1880 | GNUNET_CONFIGURATION_get_value_string (env->cfg, "transport-udp", | ||
1881 | "BINDTO6", &bind6_address)) | ||
1882 | { | ||
1883 | LOG (GNUNET_ERROR_TYPE_DEBUG, | ||
1884 | "Binding udp plugin to specific address: `%s'\n", | ||
1885 | bind6_address); | ||
1886 | if (1 != | ||
1887 | inet_pton (AF_INET6, bind6_address, &serverAddrv6.sin6_addr)) | ||
1888 | { | ||
1889 | LOG (GNUNET_ERROR_TYPE_ERROR, _("Invalid IPv6 address: `%s'\n"), | ||
1890 | bind6_address); | ||
1891 | GNUNET_free_non_null (bind4_address); | ||
1892 | GNUNET_free (bind6_address); | ||
1893 | return NULL; | ||
1894 | } | ||
1895 | } | ||
1896 | |||
1897 | |||
1898 | /* Enable neighbour discovery */ | ||
1899 | broadcast = GNUNET_CONFIGURATION_get_value_yesno (env->cfg, "transport-udp", | ||
1900 | "BROADCAST"); | ||
1901 | if (broadcast == GNUNET_SYSERR) | ||
1902 | broadcast = GNUNET_NO; | ||
1903 | |||
1904 | if (GNUNET_SYSERR == GNUNET_CONFIGURATION_get_value_time (env->cfg, "transport-udp", | ||
1905 | "BROADCAST_INTERVAL", &interval)) | ||
1906 | { | ||
1907 | interval = GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 10); | ||
1908 | } | ||
1909 | |||
1910 | /* Maximum datarate */ | ||
1911 | if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_number (env->cfg, "transport-udp", | ||
1912 | "MAX_BPS", &udp_max_bps)) | ||
1913 | { | ||
1914 | udp_max_bps = 1024 * 1024 * 50; /* 50 MB/s == infinity for practical purposes */ | ||
1915 | } | ||
1916 | |||
1917 | plugin = GNUNET_malloc (sizeof (struct Plugin)); | ||
1918 | api = GNUNET_malloc (sizeof (struct GNUNET_TRANSPORT_PluginFunctions)); | ||
1919 | |||
1920 | GNUNET_BANDWIDTH_tracker_init (&plugin->tracker, | ||
1921 | GNUNET_BANDWIDTH_value_init ((uint32_t)udp_max_bps), 30); | ||
1922 | |||
1923 | |||
1924 | plugin->sessions = GNUNET_CONTAINER_multihashmap_create (10); | ||
1925 | plugin->defrag_ctxs = GNUNET_CONTAINER_heap_create (GNUNET_CONTAINER_HEAP_ORDER_MIN); | ||
1926 | plugin->mst = GNUNET_SERVER_mst_create (&process_inbound_tokenized_messages, plugin); | ||
1927 | plugin->port = port; | ||
1928 | plugin->aport = aport; | ||
1929 | plugin->broadcast_interval = interval; | ||
1930 | plugin->enable_ipv6 = enable_v6; | ||
1931 | plugin->env = env; | ||
1932 | |||
1933 | api->cls = plugin; | ||
1934 | api->send = NULL; | ||
1935 | api->disconnect = &udp_disconnect; | ||
1936 | api->address_pretty_printer = &udp_plugin_address_pretty_printer; | ||
1937 | api->address_to_string = &udp_address_to_string; | ||
1938 | api->check_address = &udp_plugin_check_address; | ||
1939 | api->get_session = &udp_plugin_get_session; | ||
1940 | api->send = &udp_plugin_send_wrapper; | ||
1941 | api->send_with_session = &udp_plugin_send; | ||
1942 | |||
1943 | LOG (GNUNET_ERROR_TYPE_DEBUG, "Setting up sockets\n"); | ||
1944 | res = setup_sockets (plugin, &serverAddrv6, &serverAddrv4); | ||
1945 | if ((res == 0) || ((plugin->sockv4 == NULL) && (plugin->sockv6 == NULL))) | ||
1946 | { | ||
1947 | LOG (GNUNET_ERROR_TYPE_ERROR, "Failed to create network sockets, plugin failed\n"); | ||
1948 | GNUNET_free (plugin); | ||
1949 | GNUNET_free (api); | ||
1950 | return NULL; | ||
1951 | } | ||
1952 | |||
1953 | LOG (GNUNET_ERROR_TYPE_DEBUG, "Starting broadcasting\n"); | ||
1954 | if (broadcast == GNUNET_YES) | ||
1955 | setup_broadcast (plugin, &serverAddrv6, &serverAddrv4); | ||
1956 | |||
1957 | |||
1958 | GNUNET_free_non_null (bind4_address); | ||
1959 | GNUNET_free_non_null (bind6_address); | ||
1960 | return api; | ||
1961 | } | ||
1962 | |||
1963 | int heap_cleanup_iterator (void *cls, | ||
1964 | struct GNUNET_CONTAINER_HeapNode * | ||
1965 | node, void *element, | ||
1966 | GNUNET_CONTAINER_HeapCostType | ||
1967 | cost) | ||
1968 | { | ||
1969 | struct DefragContext * d_ctx = element; | ||
1970 | |||
1971 | GNUNET_CONTAINER_heap_remove_node (node); | ||
1972 | GNUNET_DEFRAGMENT_context_destroy(d_ctx->defrag); | ||
1973 | GNUNET_free (d_ctx); | ||
1974 | |||
1975 | return GNUNET_YES; | ||
1976 | } | ||
1977 | |||
1978 | |||
1979 | /** | ||
1980 | * The exported method. Makes the core api available via a global and | ||
1981 | * returns the udp transport API. | ||
1982 | * | ||
1983 | * @param cls our 'struct GNUNET_TRANSPORT_PluginEnvironment' | ||
1984 | * @return our 'struct GNUNET_TRANSPORT_PluginFunctions' | ||
1985 | */ | ||
1986 | void * | ||
1987 | libgnunet_plugin_transport_udp_done (void *cls) | ||
1988 | { | ||
1989 | struct GNUNET_TRANSPORT_PluginFunctions *api = cls; | ||
1990 | struct Plugin *plugin = api->cls; | ||
1991 | stop_broadcast (plugin); | ||
1992 | |||
1993 | if (plugin->select_task != GNUNET_SCHEDULER_NO_TASK) | ||
1994 | { | ||
1995 | GNUNET_SCHEDULER_cancel (plugin->select_task); | ||
1996 | plugin->select_task = GNUNET_SCHEDULER_NO_TASK; | ||
1997 | } | ||
1998 | |||
1999 | /* Closing sockets */ | ||
2000 | if (plugin->sockv4 != NULL) | ||
2001 | { | ||
2002 | GNUNET_break (GNUNET_OK == GNUNET_NETWORK_socket_close (plugin->sockv4)); | ||
2003 | plugin->sockv4 = NULL; | ||
2004 | } | ||
2005 | if (plugin->sockv6 != NULL) | ||
2006 | { | ||
2007 | GNUNET_break (GNUNET_OK == GNUNET_NETWORK_socket_close (plugin->sockv6)); | ||
2008 | plugin->sockv6 = NULL; | ||
2009 | } | ||
2010 | GNUNET_NETWORK_fdset_destroy (plugin->rs); | ||
2011 | GNUNET_NETWORK_fdset_destroy (plugin->ws); | ||
2012 | GNUNET_NAT_unregister (plugin->nat); | ||
2013 | |||
2014 | if (plugin->defrag_ctxs != NULL) | ||
2015 | { | ||
2016 | GNUNET_CONTAINER_heap_iterate(plugin->defrag_ctxs, | ||
2017 | heap_cleanup_iterator, NULL); | ||
2018 | GNUNET_CONTAINER_heap_destroy(plugin->defrag_ctxs); | ||
2019 | plugin->defrag_ctxs = NULL; | ||
2020 | } | ||
2021 | if (plugin->mst != NULL) | ||
2022 | { | ||
2023 | GNUNET_SERVER_mst_destroy(plugin->mst); | ||
2024 | plugin->mst = NULL; | ||
2025 | } | ||
2026 | |||
2027 | /* Clean up leftover messages */ | ||
2028 | struct UDPMessageWrapper *udpw = plugin->msg_head; | ||
2029 | while (udpw != NULL) | ||
2030 | { | ||
2031 | struct UDPMessageWrapper *tmp = udpw->next; | ||
2032 | GNUNET_CONTAINER_DLL_remove(plugin->msg_head, plugin->msg_tail, udpw); | ||
2033 | if (udpw->cont != NULL) | ||
2034 | udpw->cont (udpw->cont_cls, &udpw->session->target, GNUNET_SYSERR); | ||
2035 | GNUNET_free (udpw); | ||
2036 | udpw = tmp; | ||
2037 | } | ||
2038 | |||
2039 | /* Clean up sessions */ | ||
2040 | #if DEBUG_UDP | ||
2041 | LOG (GNUNET_ERROR_TYPE_DEBUG, | ||
2042 | "Cleaning up sessions\n"); | ||
2043 | #endif | ||
2044 | GNUNET_CONTAINER_multihashmap_iterate (plugin->sessions, &disconnect_and_free_it, plugin); | ||
2045 | GNUNET_CONTAINER_multihashmap_destroy (plugin->sessions); | ||
2046 | |||
2047 | plugin->nat = NULL; | ||
2048 | GNUNET_free (plugin); | ||
2049 | GNUNET_free (api); | ||
2050 | return NULL; | ||
2051 | } | ||
2052 | |||
2053 | |||
2054 | /* end of plugin_transport_udp.c */ | ||
diff --git a/src/transport/plugin_transport_unix.c b/src/transport/plugin_transport_unix.c index 9f717f649..c5cdb17d4 100644 --- a/src/transport/plugin_transport_unix.c +++ b/src/transport/plugin_transport_unix.c | |||
@@ -346,7 +346,6 @@ find_session (struct Plugin *plugin, const struct GNUNET_PeerIdentity *peer) | |||
346 | * send_handle squared away! | 346 | * send_handle squared away! |
347 | * | 347 | * |
348 | * @param cls closure | 348 | * @param cls closure |
349 | * @param incoming_retry_context the retry context to use | ||
350 | * @param send_handle which handle to send message on | 349 | * @param send_handle which handle to send message on |
351 | * @param target who should receive this message (ignored by UNIX) | 350 | * @param target who should receive this message (ignored by UNIX) |
352 | * @param msgbuf one or more GNUNET_MessageHeader(s) strung together | 351 | * @param msgbuf one or more GNUNET_MessageHeader(s) strung together |
diff --git a/src/transport/transport-testing.c b/src/transport/transport-testing.c index dcd95053b..01b313a15 100644 --- a/src/transport/transport-testing.c +++ b/src/transport/transport-testing.c | |||
@@ -518,22 +518,23 @@ GNUNET_TRANSPORT_TESTING_stop_peer (struct GNUNET_TRANSPORT_TESTING_handle *tth, | |||
518 | } | 518 | } |
519 | 519 | ||
520 | /** | 520 | /** |
521 | * Initiate peer p1 to connect to peer p2 | 521 | * Connect the given peers and call the callback when both peers report the |
522 | * Get peer p2's HELLO and offer it to p1 | 522 | * inbound connection. Remarks: start_peer's notify_connect callback can be called |
523 | * p1 then tries to connect to p2 | 523 | * before. |
524 | * | ||
525 | * @param tth transport testing handle | ||
524 | * @param p1 peer 1 | 526 | * @param p1 peer 1 |
525 | * @param p2 peer 2 | 527 | * @param p2 peer 2 |
526 | * @param cb the callback to call when both peers notified that they are connected | 528 | * @param cb the callback to call when both peers notified that they are connected |
527 | * @param cb_cls callback cls (or a pointer to the | 529 | * @param cls callback cls |
528 | * GNUNET_TRANSPORT_TESTING_ConnectRequest itself if null) | 530 | * @return a connect request handle |
529 | * @return connect context | ||
530 | */ | 531 | */ |
531 | GNUNET_TRANSPORT_TESTING_ConnectRequest | 532 | GNUNET_TRANSPORT_TESTING_ConnectRequest |
532 | GNUNET_TRANSPORT_TESTING_connect_peers (struct GNUNET_TRANSPORT_TESTING_handle | 533 | GNUNET_TRANSPORT_TESTING_connect_peers (struct GNUNET_TRANSPORT_TESTING_handle *tth, |
533 | *tth, struct PeerContext *p1, | 534 | struct PeerContext *p1, |
534 | struct PeerContext *p2, | 535 | struct PeerContext *p2, |
535 | GNUNET_TRANSPORT_TESTING_connect_cb cb, | 536 | GNUNET_TRANSPORT_TESTING_connect_cb cb, |
536 | void *cb_cls) | 537 | void *cls) |
537 | { | 538 | { |
538 | GNUNET_assert (tth != NULL); | 539 | GNUNET_assert (tth != NULL); |
539 | 540 | ||
@@ -547,8 +548,8 @@ GNUNET_TRANSPORT_TESTING_connect_peers (struct GNUNET_TRANSPORT_TESTING_handle | |||
547 | cc->p2 = p2; | 548 | cc->p2 = p2; |
548 | 549 | ||
549 | cc->cb = cb; | 550 | cc->cb = cb; |
550 | if (cb_cls != NULL) | 551 | if (cls != NULL) |
551 | cc->cb_cls = cb_cls; | 552 | cc->cb_cls = cls; |
552 | else | 553 | else |
553 | cc->cb_cls = cc; | 554 | cc->cb_cls = cc; |
554 | 555 | ||
diff --git a/src/transport/transport-testing.h b/src/transport/transport-testing.h index cc4974ff8..20e802dfa 100644 --- a/src/transport/transport-testing.h +++ b/src/transport/transport-testing.h | |||
@@ -189,12 +189,12 @@ GNUNET_TRANSPORT_TESTING_restart_peer (struct GNUNET_TRANSPORT_TESTING_handle | |||
189 | * @param p1 peer 1 | 189 | * @param p1 peer 1 |
190 | * @param p2 peer 2 | 190 | * @param p2 peer 2 |
191 | * @param cb the callback to call when both peers notified that they are connected | 191 | * @param cb the callback to call when both peers notified that they are connected |
192 | * @param cb_cls callback cls | 192 | * @param cls callback cls |
193 | * @return a connect request handle | 193 | * @return a connect request handle |
194 | */ | 194 | */ |
195 | GNUNET_TRANSPORT_TESTING_ConnectRequest | 195 | GNUNET_TRANSPORT_TESTING_ConnectRequest |
196 | GNUNET_TRANSPORT_TESTING_connect_peers (struct GNUNET_TRANSPORT_TESTING_handle | 196 | GNUNET_TRANSPORT_TESTING_connect_peers (struct GNUNET_TRANSPORT_TESTING_handle *tth, |
197 | *tth, struct PeerContext *p1, | 197 | struct PeerContext *p1, |
198 | struct PeerContext *p2, | 198 | struct PeerContext *p2, |
199 | GNUNET_TRANSPORT_TESTING_connect_cb cb, | 199 | GNUNET_TRANSPORT_TESTING_connect_cb cb, |
200 | void *cls); | 200 | void *cls); |
@@ -203,7 +203,7 @@ GNUNET_TRANSPORT_TESTING_connect_peers (struct GNUNET_TRANSPORT_TESTING_handle | |||
203 | * Cancel the request to connect two peers | 203 | * Cancel the request to connect two peers |
204 | * Tou MUST cancel the request if you stop the peers before the peers connected succesfully | 204 | * Tou MUST cancel the request if you stop the peers before the peers connected succesfully |
205 | * @param tth testing | 205 | * @param tth testing |
206 | * @param cc a connect request handle | 206 | * @param ccr a connect request handle |
207 | */ | 207 | */ |
208 | void | 208 | void |
209 | GNUNET_TRANSPORT_TESTING_connect_peers_cancel (struct | 209 | GNUNET_TRANSPORT_TESTING_connect_peers_cancel (struct |