1 |
pcg |
1.1 |
/* |
2 |
|
|
vpn.C -- handle the protocol, encryption, handshaking etc. |
3 |
|
|
|
4 |
|
|
This program is free software; you can redistribute it and/or modify |
5 |
|
|
it under the terms of the GNU General Public License as published by |
6 |
|
|
the Free Software Foundation; either version 2 of the License, or |
7 |
|
|
(at your option) any later version. |
8 |
|
|
|
9 |
|
|
This program is distributed in the hope that it will be useful, |
10 |
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of |
11 |
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
12 |
|
|
GNU General Public License for more details. |
13 |
|
|
|
14 |
|
|
You should have received a copy of the GNU General Public License |
15 |
|
|
along with this program; if not, write to the Free Software |
16 |
|
|
Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
17 |
|
|
*/ |
18 |
|
|
|
19 |
|
|
#include "config.h" |
20 |
|
|
|
21 |
|
|
#include <list> |
22 |
|
|
|
23 |
|
|
#include <cstdlib> |
24 |
|
|
#include <cstring> |
25 |
|
|
#include <cstdio> |
26 |
|
|
|
27 |
|
|
#include <sys/types.h> |
28 |
|
|
#include <sys/socket.h> |
29 |
|
|
#include <sys/poll.h> |
30 |
|
|
#include <sys/wait.h> |
31 |
|
|
#include <netinet/in.h> |
32 |
|
|
#include <arpa/inet.h> |
33 |
|
|
#include <errno.h> |
34 |
|
|
#include <time.h> |
35 |
|
|
#include <unistd.h> |
36 |
|
|
|
37 |
|
|
#include "pidfile.h" |
38 |
|
|
|
39 |
|
|
#include "connection.h" |
40 |
|
|
#include "util.h" |
41 |
|
|
#include "vpn.h" |
42 |
|
|
|
43 |
|
|
///////////////////////////////////////////////////////////////////////////// |
44 |
|
|
|
45 |
pcg |
1.2 |
const char *vpn::script_if_up () |
46 |
pcg |
1.1 |
{ |
47 |
|
|
// the tunnel device mtu should be the physical mtu - overhead |
48 |
|
|
// the tricky part is rounding to the cipher key blocksize |
49 |
|
|
int mtu = conf.mtu - ETH_OVERHEAD - VPE_OVERHEAD - MAX_OVERHEAD; |
50 |
|
|
mtu += ETH_OVERHEAD - 6 - 6; // now we have the data portion |
51 |
|
|
mtu -= mtu % EVP_CIPHER_block_size (CIPHER); // round |
52 |
|
|
mtu -= ETH_OVERHEAD - 6 - 6; // and get interface mtu again |
53 |
|
|
|
54 |
|
|
char *env; |
55 |
|
|
asprintf (&env, "CONFBASE=%s", confbase); |
56 |
|
|
putenv (env); |
57 |
|
|
asprintf (&env, "NODENAME=%s", THISNODE->nodename); |
58 |
|
|
putenv (env); |
59 |
|
|
asprintf (&env, "NODEID=%d", THISNODE->id); |
60 |
|
|
putenv (env); |
61 |
|
|
asprintf (&env, "IFNAME=%s", tap->interface ()); |
62 |
|
|
putenv (env); |
63 |
|
|
asprintf (&env, "MTU=%d", mtu); |
64 |
|
|
putenv (env); |
65 |
|
|
asprintf (&env, "MAC=%02x:%02x:%02x:%02x:%02x:%02x", |
66 |
|
|
0xfe, 0xfd, 0x80, 0x00, THISNODE->id >> 8, |
67 |
|
|
THISNODE->id & 0xff); |
68 |
|
|
putenv (env); |
69 |
|
|
|
70 |
|
|
return ::conf.script_if_up ? ::conf.script_if_up : "if-up"; |
71 |
|
|
} |
72 |
|
|
|
73 |
|
|
int |
74 |
|
|
vpn::setup () |
75 |
|
|
{ |
76 |
pcg |
1.8 |
ipv4_fd = -1; |
77 |
pcg |
1.1 |
|
78 |
pcg |
1.8 |
if (THISNODE->protocols & PROT_IPv4 && ::conf.ip_proto) |
79 |
pcg |
1.1 |
{ |
80 |
pcg |
1.8 |
ipv4_fd = socket (PF_INET, SOCK_RAW, ::conf.ip_proto); |
81 |
pcg |
1.1 |
|
82 |
pcg |
1.8 |
if (ipv4_fd < 0) |
83 |
pcg |
1.1 |
return -1; |
84 |
|
|
|
85 |
pcg |
1.8 |
sockinfo si (THISNODE, PROT_IPv4); |
86 |
pcg |
1.3 |
|
87 |
pcg |
1.8 |
if (bind (ipv4_fd, si.sav4 (), si.salenv4 ())) |
88 |
pcg |
1.1 |
{ |
89 |
pcg |
1.8 |
slog (L_ERR, _("can't bind ipv4 socket on %s: %s"), (const char *)si, strerror (errno)); |
90 |
pcg |
1.1 |
exit (1); |
91 |
|
|
} |
92 |
|
|
|
93 |
|
|
#ifdef IP_MTU_DISCOVER |
94 |
|
|
// this I really consider a linux bug. I am neither connected |
95 |
|
|
// nor do I fragment myself. Linux still sets DF and doesn't |
96 |
|
|
// fragment for me sometimes. |
97 |
|
|
{ |
98 |
|
|
int oval = IP_PMTUDISC_DONT; |
99 |
pcg |
1.8 |
setsockopt (ipv4_fd, SOL_IP, IP_MTU_DISCOVER, &oval, sizeof oval); |
100 |
pcg |
1.1 |
} |
101 |
|
|
#endif |
102 |
|
|
|
103 |
pcg |
1.8 |
ipv4_ev_watcher.start (ipv4_fd, POLLIN); |
104 |
pcg |
1.1 |
} |
105 |
|
|
|
106 |
pcg |
1.8 |
udpv4_fd = -1; |
107 |
|
|
|
108 |
|
|
if (THISNODE->protocols & PROT_UDPv4 && THISNODE->udp_port) |
109 |
pcg |
1.1 |
{ |
110 |
pcg |
1.8 |
udpv4_fd = socket (PF_INET, SOCK_DGRAM, IPPROTO_UDP); |
111 |
pcg |
1.1 |
|
112 |
pcg |
1.8 |
if (udpv4_fd < 0) |
113 |
pcg |
1.1 |
return -1; |
114 |
|
|
|
115 |
pcg |
1.8 |
// standard daemon practise... |
116 |
|
|
{ |
117 |
|
|
int oval = 1; |
118 |
|
|
setsockopt (udpv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval); |
119 |
|
|
} |
120 |
|
|
|
121 |
|
|
sockinfo si (THISNODE, PROT_UDPv4); |
122 |
pcg |
1.2 |
|
123 |
pcg |
1.8 |
if (bind (udpv4_fd, si.sav4 (), si.salenv4 ())) |
124 |
pcg |
1.1 |
{ |
125 |
pcg |
1.8 |
slog (L_ERR, _("can't bind udpv4 on %s: %s"), (const char *)si, strerror (errno)); |
126 |
pcg |
1.1 |
exit (1); |
127 |
|
|
} |
128 |
|
|
|
129 |
|
|
#ifdef IP_MTU_DISCOVER |
130 |
|
|
// this I really consider a linux bug. I am neither connected |
131 |
|
|
// nor do I fragment myself. Linux still sets DF and doesn't |
132 |
|
|
// fragment for me sometimes. |
133 |
|
|
{ |
134 |
|
|
int oval = IP_PMTUDISC_DONT; |
135 |
pcg |
1.8 |
setsockopt (udpv4_fd, SOL_IP, IP_MTU_DISCOVER, &oval, sizeof oval); |
136 |
pcg |
1.1 |
} |
137 |
|
|
#endif |
138 |
|
|
|
139 |
pcg |
1.8 |
udpv4_ev_watcher.start (udpv4_fd, POLLIN); |
140 |
pcg |
1.1 |
} |
141 |
|
|
|
142 |
pcg |
1.8 |
tcpv4_fd = -1; |
143 |
|
|
|
144 |
pcg |
1.2 |
#if ENABLE_TCP |
145 |
pcg |
1.8 |
if (THISNODE->protocols & PROT_TCPv4 && THISNODE->tcp_port) |
146 |
pcg |
1.2 |
{ |
147 |
|
|
tcpv4_fd = socket (PF_INET, SOCK_STREAM, IPPROTO_TCP); |
148 |
|
|
|
149 |
|
|
if (tcpv4_fd < 0) |
150 |
|
|
return -1; |
151 |
|
|
|
152 |
pcg |
1.3 |
// standard daemon practise... |
153 |
|
|
{ |
154 |
|
|
int oval = 1; |
155 |
|
|
setsockopt (tcpv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval); |
156 |
|
|
} |
157 |
|
|
|
158 |
pcg |
1.2 |
sockinfo si (THISNODE, PROT_TCPv4); |
159 |
|
|
|
160 |
|
|
if (bind (tcpv4_fd, si.sav4 (), si.salenv4 ())) |
161 |
|
|
{ |
162 |
|
|
slog (L_ERR, _("can't bind tcpv4 on %s: %s"), (const char *)si, strerror (errno)); |
163 |
|
|
exit (1); |
164 |
|
|
} |
165 |
|
|
|
166 |
|
|
if (listen (tcpv4_fd, 5)) |
167 |
|
|
{ |
168 |
|
|
slog (L_ERR, _("can't listen tcpv4 on %s: %s"), (const char *)si, strerror (errno)); |
169 |
|
|
exit (1); |
170 |
|
|
} |
171 |
|
|
|
172 |
pcg |
1.3 |
tcpv4_ev_watcher.start (tcpv4_fd, POLLIN); |
173 |
pcg |
1.2 |
} |
174 |
|
|
#endif |
175 |
|
|
|
176 |
pcg |
1.1 |
tap = new tap_device (); |
177 |
|
|
if (!tap) //D this, of course, never catches |
178 |
|
|
{ |
179 |
|
|
slog (L_ERR, _("cannot create network interface '%s'"), conf.ifname); |
180 |
|
|
exit (1); |
181 |
|
|
} |
182 |
|
|
|
183 |
|
|
run_script (run_script_cb (this, &vpn::script_if_up), true); |
184 |
|
|
|
185 |
|
|
tap_ev_watcher.start (tap->fd, POLLIN); |
186 |
|
|
|
187 |
|
|
reconnect_all (); |
188 |
|
|
|
189 |
|
|
return 0; |
190 |
|
|
} |
191 |
|
|
|
192 |
pcg |
1.5 |
// send a vpn packet out to other hosts |
193 |
pcg |
1.7 |
bool |
194 |
pcg |
1.5 |
vpn::send_vpn_packet (vpn_packet *pkt, const sockinfo &si, int tos) |
195 |
|
|
{ |
196 |
|
|
switch (si.prot) |
197 |
|
|
{ |
198 |
|
|
case PROT_IPv4: |
199 |
pcg |
1.7 |
return send_ipv4_packet (pkt, si, tos); |
200 |
pcg |
1.5 |
|
201 |
|
|
case PROT_UDPv4: |
202 |
pcg |
1.7 |
return send_udpv4_packet (pkt, si, tos); |
203 |
pcg |
1.5 |
|
204 |
|
|
#if ENABLE_TCP |
205 |
|
|
case PROT_TCPv4: |
206 |
pcg |
1.7 |
return send_tcpv4_packet (pkt, si, tos); |
207 |
pcg |
1.5 |
#endif |
208 |
|
|
|
209 |
|
|
default: |
210 |
|
|
slog (L_CRIT, _("%s: FATAL: trying to send packet with unsupported protocol"), (const char *)si); |
211 |
pcg |
1.7 |
return false; |
212 |
pcg |
1.5 |
} |
213 |
|
|
} |
214 |
|
|
|
215 |
pcg |
1.7 |
bool |
216 |
pcg |
1.1 |
vpn::send_ipv4_packet (vpn_packet *pkt, const sockinfo &si, int tos) |
217 |
|
|
{ |
218 |
|
|
setsockopt (ipv4_fd, SOL_IP, IP_TOS, &tos, sizeof tos); |
219 |
|
|
sendto (ipv4_fd, &((*pkt)[0]), pkt->len, 0, si.sav4 (), si.salenv4 ()); |
220 |
pcg |
1.7 |
|
221 |
|
|
return true; |
222 |
pcg |
1.1 |
} |
223 |
|
|
|
224 |
pcg |
1.7 |
bool |
225 |
pcg |
1.1 |
vpn::send_udpv4_packet (vpn_packet *pkt, const sockinfo &si, int tos) |
226 |
|
|
{ |
227 |
|
|
setsockopt (udpv4_fd, SOL_IP, IP_TOS, &tos, sizeof tos); |
228 |
|
|
sendto (udpv4_fd, &((*pkt)[0]), pkt->len, 0, si.sav4 (), si.salenv4 ()); |
229 |
pcg |
1.7 |
|
230 |
|
|
return true; |
231 |
pcg |
1.1 |
} |
232 |
|
|
|
233 |
|
|
void |
234 |
|
|
vpn::recv_vpn_packet (vpn_packet *pkt, const sockinfo &rsi) |
235 |
|
|
{ |
236 |
|
|
unsigned int src = pkt->src (); |
237 |
|
|
unsigned int dst = pkt->dst (); |
238 |
|
|
|
239 |
|
|
slog (L_NOISE, _("<<?/%s received possible vpn packet type %d from %d to %d, length %d"), |
240 |
|
|
(const char *)rsi, pkt->typ (), pkt->src (), pkt->dst (), pkt->len); |
241 |
|
|
|
242 |
|
|
if (src == 0 || src > conns.size () |
243 |
|
|
|| dst > conns.size () |
244 |
|
|
|| pkt->typ () >= vpn_packet::PT_MAX) |
245 |
|
|
slog (L_WARN, _("(%s): received corrupted packet type %d (src %d, dst %d)"), |
246 |
|
|
(const char *)rsi, pkt->typ (), pkt->src (), pkt->dst ()); |
247 |
pcg |
1.6 |
else if (dst > conns.size ()) |
248 |
|
|
slog (L_WARN, _("(%s): received corrupted packet type %d (src %d, dst %d)"), |
249 |
|
|
(const char *)rsi, pkt->typ (), pkt->src (), pkt->dst ()); |
250 |
pcg |
1.1 |
else |
251 |
|
|
{ |
252 |
|
|
connection *c = conns[src - 1]; |
253 |
|
|
|
254 |
|
|
if (dst == 0 && !THISNODE->routerprio) |
255 |
|
|
slog (L_WARN, _("%s(%s): received broadcast, but we are no router"), |
256 |
|
|
c->conf->nodename, (const char *)rsi); |
257 |
|
|
else if (dst != 0 && dst != THISNODE->id) |
258 |
pcg |
1.6 |
{ |
259 |
|
|
if (THISNODE->routerprio) |
260 |
|
|
// the tos setting gets lost here. who cares. |
261 |
|
|
conns[dst - 1]->inject_vpn_packet (pkt); |
262 |
|
|
else |
263 |
|
|
slog (L_WARN, |
264 |
|
|
_("%s(%s): forwarding request (=> %s), but we are no router"), |
265 |
|
|
c->conf->nodename, (const char *)rsi, |
266 |
|
|
conns[dst - 1]->conf->nodename); |
267 |
|
|
} |
268 |
pcg |
1.1 |
else |
269 |
|
|
c->recv_vpn_packet (pkt, rsi); |
270 |
|
|
} |
271 |
|
|
} |
272 |
|
|
|
273 |
|
|
void |
274 |
pcg |
1.3 |
vpn::udpv4_ev (io_watcher &w, short revents) |
275 |
pcg |
1.1 |
{ |
276 |
|
|
if (revents & (POLLIN | POLLERR)) |
277 |
|
|
{ |
278 |
|
|
vpn_packet *pkt = new vpn_packet; |
279 |
|
|
struct sockaddr_in sa; |
280 |
|
|
socklen_t sa_len = sizeof (sa); |
281 |
|
|
int len; |
282 |
|
|
|
283 |
pcg |
1.5 |
len = recvfrom (w.fd, &((*pkt)[0]), MAXSIZE, 0, (sockaddr *)&sa, &sa_len); |
284 |
pcg |
1.1 |
|
285 |
pcg |
1.5 |
sockinfo si(sa, PROT_UDPv4); |
286 |
pcg |
1.1 |
|
287 |
|
|
if (len > 0) |
288 |
|
|
{ |
289 |
|
|
pkt->len = len; |
290 |
|
|
|
291 |
|
|
recv_vpn_packet (pkt, si); |
292 |
|
|
} |
293 |
|
|
else |
294 |
|
|
{ |
295 |
|
|
// probably ECONNRESET or somesuch |
296 |
pcg |
1.5 |
slog (L_DEBUG, _("%s: fd %d, %s"), (const char *)si, w.fd, strerror (errno)); |
297 |
pcg |
1.1 |
} |
298 |
|
|
|
299 |
|
|
delete pkt; |
300 |
|
|
} |
301 |
|
|
else if (revents & POLLHUP) |
302 |
|
|
{ |
303 |
|
|
// this cannot ;) happen on udp sockets |
304 |
|
|
slog (L_ERR, _("FATAL: POLLHUP on udp v4 fd, terminating.")); |
305 |
|
|
exit (1); |
306 |
|
|
} |
307 |
|
|
else |
308 |
|
|
{ |
309 |
|
|
slog (L_ERR, |
310 |
|
|
_("FATAL: unknown revents %08x in socket, terminating\n"), |
311 |
|
|
revents); |
312 |
|
|
exit (1); |
313 |
|
|
} |
314 |
|
|
} |
315 |
|
|
|
316 |
|
|
void |
317 |
pcg |
1.3 |
vpn::ipv4_ev (io_watcher &w, short revents) |
318 |
pcg |
1.1 |
{ |
319 |
|
|
if (revents & (POLLIN | POLLERR)) |
320 |
|
|
{ |
321 |
|
|
vpn_packet *pkt = new vpn_packet; |
322 |
|
|
struct sockaddr_in sa; |
323 |
|
|
socklen_t sa_len = sizeof (sa); |
324 |
|
|
int len; |
325 |
|
|
|
326 |
pcg |
1.5 |
len = recvfrom (w.fd, &((*pkt)[0]), MAXSIZE, 0, (sockaddr *)&sa, &sa_len); |
327 |
pcg |
1.1 |
|
328 |
|
|
sockinfo si(sa, PROT_IPv4); |
329 |
|
|
|
330 |
|
|
if (len > 0) |
331 |
|
|
{ |
332 |
|
|
pkt->len = len; |
333 |
|
|
|
334 |
|
|
// raw sockets deliver the ipv4, but don't expect it on sends |
335 |
|
|
// this is slow, but... |
336 |
|
|
pkt->skip_hdr (IP_OVERHEAD); |
337 |
|
|
|
338 |
|
|
recv_vpn_packet (pkt, si); |
339 |
|
|
} |
340 |
|
|
else |
341 |
|
|
{ |
342 |
|
|
// probably ECONNRESET or somesuch |
343 |
|
|
slog (L_DEBUG, _("%s: %s"), (const char *)si, strerror (errno)); |
344 |
|
|
} |
345 |
|
|
|
346 |
|
|
delete pkt; |
347 |
|
|
} |
348 |
|
|
else if (revents & POLLHUP) |
349 |
|
|
{ |
350 |
|
|
// this cannot ;) happen on udp sockets |
351 |
|
|
slog (L_ERR, _("FATAL: POLLHUP on ipv4 fd, terminating.")); |
352 |
|
|
exit (1); |
353 |
|
|
} |
354 |
|
|
else |
355 |
|
|
{ |
356 |
|
|
slog (L_ERR, |
357 |
|
|
_("FATAL: unknown revents %08x in socket, terminating\n"), |
358 |
|
|
revents); |
359 |
|
|
exit (1); |
360 |
|
|
} |
361 |
|
|
} |
362 |
pcg |
1.2 |
|
363 |
|
|
void |
364 |
pcg |
1.3 |
vpn::tap_ev (io_watcher &w, short revents) |
365 |
pcg |
1.1 |
{ |
366 |
|
|
if (revents & POLLIN) |
367 |
|
|
{ |
368 |
|
|
/* process data */ |
369 |
|
|
tap_packet *pkt; |
370 |
|
|
|
371 |
|
|
pkt = tap->recv (); |
372 |
|
|
|
373 |
|
|
int dst = mac2id (pkt->dst); |
374 |
|
|
int src = mac2id (pkt->src); |
375 |
|
|
|
376 |
|
|
if (src != THISNODE->id) |
377 |
|
|
{ |
378 |
|
|
slog (L_ERR, _("FATAL: tap packet not originating on current node received, terminating.")); |
379 |
|
|
exit (1); |
380 |
|
|
} |
381 |
|
|
|
382 |
|
|
if (dst == THISNODE->id) |
383 |
|
|
{ |
384 |
|
|
slog (L_ERR, _("FATAL: tap packet destined for current node received, terminating.")); |
385 |
|
|
exit (1); |
386 |
|
|
} |
387 |
|
|
|
388 |
|
|
if (dst > conns.size ()) |
389 |
|
|
slog (L_ERR, _("tap packet for unknown node %d received, ignoring."), dst); |
390 |
|
|
else |
391 |
|
|
{ |
392 |
|
|
if (dst) |
393 |
|
|
{ |
394 |
|
|
// unicast |
395 |
|
|
if (dst != THISNODE->id) |
396 |
|
|
conns[dst - 1]->inject_data_packet (pkt); |
397 |
|
|
} |
398 |
|
|
else |
399 |
|
|
{ |
400 |
|
|
// broadcast, first check router, then self, then english |
401 |
|
|
connection *router = find_router (); |
402 |
|
|
|
403 |
|
|
if (router) |
404 |
|
|
router->inject_data_packet (pkt, true); |
405 |
|
|
else |
406 |
|
|
for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c) |
407 |
|
|
if ((*c)->conf != THISNODE) |
408 |
|
|
(*c)->inject_data_packet (pkt); |
409 |
|
|
} |
410 |
|
|
} |
411 |
|
|
|
412 |
|
|
delete pkt; |
413 |
|
|
} |
414 |
|
|
else if (revents & (POLLHUP | POLLERR)) |
415 |
|
|
{ |
416 |
|
|
slog (L_ERR, _("FATAL: POLLHUP or POLLERR on network device fd, terminating.")); |
417 |
|
|
exit (1); |
418 |
|
|
} |
419 |
|
|
else |
420 |
|
|
abort (); |
421 |
|
|
} |
422 |
|
|
|
423 |
|
|
void |
424 |
pcg |
1.3 |
vpn::event_cb (time_watcher &w) |
425 |
pcg |
1.1 |
{ |
426 |
|
|
if (events) |
427 |
|
|
{ |
428 |
|
|
if (events & EVENT_SHUTDOWN) |
429 |
|
|
{ |
430 |
|
|
slog (L_INFO, _("preparing shutdown...")); |
431 |
|
|
|
432 |
|
|
shutdown_all (); |
433 |
|
|
|
434 |
|
|
remove_pid (pidfilename); |
435 |
|
|
|
436 |
|
|
slog (L_INFO, _("terminating")); |
437 |
|
|
|
438 |
|
|
exit (0); |
439 |
|
|
} |
440 |
|
|
|
441 |
|
|
if (events & EVENT_RECONNECT) |
442 |
|
|
{ |
443 |
|
|
slog (L_INFO, _("forced reconnect")); |
444 |
|
|
|
445 |
|
|
reconnect_all (); |
446 |
|
|
} |
447 |
|
|
|
448 |
|
|
events = 0; |
449 |
|
|
} |
450 |
|
|
|
451 |
pcg |
1.3 |
w.at = TSTAMP_CANCEL; |
452 |
pcg |
1.1 |
} |
453 |
|
|
|
454 |
|
|
void |
455 |
|
|
vpn::shutdown_all () |
456 |
|
|
{ |
457 |
|
|
for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c) |
458 |
|
|
(*c)->shutdown (); |
459 |
|
|
} |
460 |
|
|
|
461 |
|
|
void |
462 |
|
|
vpn::reconnect_all () |
463 |
|
|
{ |
464 |
|
|
for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c) |
465 |
|
|
delete *c; |
466 |
|
|
|
467 |
|
|
conns.clear (); |
468 |
|
|
|
469 |
|
|
connection_init (); |
470 |
|
|
|
471 |
|
|
for (configuration::node_vector::iterator i = conf.nodes.begin (); |
472 |
|
|
i != conf.nodes.end (); ++i) |
473 |
|
|
{ |
474 |
|
|
connection *conn = new connection (this); |
475 |
|
|
|
476 |
|
|
conn->conf = *i; |
477 |
|
|
conns.push_back (conn); |
478 |
|
|
|
479 |
|
|
conn->establish_connection (); |
480 |
|
|
} |
481 |
|
|
} |
482 |
|
|
|
483 |
|
|
connection *vpn::find_router () |
484 |
|
|
{ |
485 |
|
|
u32 prio = 0; |
486 |
|
|
connection *router = 0; |
487 |
|
|
|
488 |
|
|
for (conns_vector::iterator i = conns.begin (); i != conns.end (); ++i) |
489 |
|
|
{ |
490 |
|
|
connection *c = *i; |
491 |
|
|
|
492 |
|
|
if (c->conf->routerprio > prio |
493 |
|
|
&& c->connectmode == conf_node::C_ALWAYS |
494 |
|
|
&& c->conf != THISNODE |
495 |
|
|
&& c->ictx && c->octx) |
496 |
|
|
{ |
497 |
|
|
prio = c->conf->routerprio; |
498 |
|
|
router = c; |
499 |
|
|
} |
500 |
|
|
} |
501 |
|
|
|
502 |
|
|
return router; |
503 |
|
|
} |
504 |
|
|
|
505 |
pcg |
1.7 |
void vpn::send_connect_request (int id) |
506 |
pcg |
1.1 |
{ |
507 |
|
|
connection *c = find_router (); |
508 |
|
|
|
509 |
|
|
if (c) |
510 |
pcg |
1.7 |
c->send_connect_request (id); |
511 |
|
|
else |
512 |
|
|
// no router found, aggressively connect to all routers |
513 |
|
|
for (conns_vector::iterator i = conns.begin (); i != conns.end (); ++i) |
514 |
|
|
if ((*i)->conf->routerprio) |
515 |
|
|
(*i)->establish_connection (); |
516 |
pcg |
1.1 |
} |
517 |
|
|
|
518 |
|
|
void |
519 |
|
|
connection::dump_status () |
520 |
|
|
{ |
521 |
|
|
slog (L_NOTICE, _("node %s (id %d)"), conf->nodename, conf->id); |
522 |
|
|
slog (L_NOTICE, _(" connectmode %d (%d) / sockaddr %s / minor %d"), |
523 |
|
|
connectmode, conf->connectmode, (const char *)si, (int)prot_minor); |
524 |
|
|
slog (L_NOTICE, _(" ictx/octx %08lx/%08lx / oseqno %d / retry_cnt %d"), |
525 |
|
|
(long)ictx, (long)octx, (int)oseqno, (int)retry_cnt); |
526 |
|
|
slog (L_NOTICE, _(" establish_conn %ld / rekey %ld / keepalive %ld"), |
527 |
|
|
(long)(establish_connection.at), (long)(rekey.at), (long)(keepalive.at)); |
528 |
|
|
} |
529 |
|
|
|
530 |
|
|
void |
531 |
|
|
vpn::dump_status () |
532 |
|
|
{ |
533 |
|
|
slog (L_NOTICE, _("BEGIN status dump (%ld)"), (long)NOW); |
534 |
|
|
|
535 |
|
|
for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c) |
536 |
|
|
(*c)->dump_status (); |
537 |
|
|
|
538 |
|
|
slog (L_NOTICE, _("END status dump")); |
539 |
|
|
} |
540 |
|
|
|
541 |
|
|
vpn::vpn (void) |
542 |
pcg |
1.2 |
: event(this, &vpn::event_cb) |
543 |
|
|
, udpv4_ev_watcher(this, &vpn::udpv4_ev) |
544 |
|
|
, ipv4_ev_watcher (this, &vpn::ipv4_ev) |
545 |
|
|
, tap_ev_watcher (this, &vpn::tap_ev) |
546 |
|
|
#if ENABLE_TCP |
547 |
pcg |
1.3 |
, tcpv4_ev_watcher(this, &vpn::tcpv4_ev) |
548 |
pcg |
1.2 |
#endif |
549 |
pcg |
1.1 |
{ |
550 |
|
|
} |
551 |
|
|
|
552 |
|
|
vpn::~vpn () |
553 |
|
|
{ |
554 |
|
|
} |
555 |
|
|
|