1 | /* |
1 | /* |
2 | vpn.C -- handle the protocol, encryption, handshaking etc. |
2 | vpn.C -- handle the protocol, encryption, handshaking etc. |
3 | Copyright (C) 2003-2005 Marc Lehmann <gvpe@schmorp.de> |
3 | Copyright (C) 2003-2008 Marc Lehmann <gvpe@schmorp.de> |
4 | |
4 | |
5 | This file is part of GVPE. |
5 | This file is part of GVPE. |
6 | |
6 | |
7 | GVPE is free software; you can redistribute it and/or modify |
7 | GVPE is free software; you can redistribute it and/or modify it |
8 | it under the terms of the GNU General Public License as published by |
8 | under the terms of the GNU General Public License as published by the |
9 | the Free Software Foundation; either version 2 of the License, or |
9 | Free Software Foundation; either version 3 of the License, or (at your |
10 | (at your option) any later version. |
10 | option) any later version. |
11 | |
11 | |
12 | This program is distributed in the hope that it will be useful, |
12 | This program is distributed in the hope that it will be useful, but |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General |
15 | GNU General Public License for more details. |
15 | Public License for more details. |
16 | |
16 | |
17 | You should have received a copy of the GNU General Public License |
17 | You should have received a copy of the GNU General Public License along |
18 | along with gvpe; if not, write to the Free Software |
18 | with this program; if not, see <http://www.gnu.org/licenses/>. |
19 | Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
19 | |
|
|
20 | Additional permission under GNU GPL version 3 section 7 |
|
|
21 | |
|
|
22 | If you modify this Program, or any covered work, by linking or |
|
|
23 | combining it with the OpenSSL project's OpenSSL library (or a modified |
|
|
24 | version of that library), containing parts covered by the terms of the |
|
|
25 | OpenSSL or SSLeay licenses, the licensors of this Program grant you |
|
|
26 | additional permission to convey the resulting work. Corresponding |
|
|
27 | Source for a non-source form of such a combination shall include the |
|
|
28 | source code for the parts of OpenSSL used as well as that of the |
|
|
29 | covered work. |
20 | */ |
30 | */ |
21 | |
31 | |
22 | #include "config.h" |
32 | #include "config.h" |
23 | |
33 | |
24 | #include <list> |
34 | #include <list> |
… | |
… | |
46 | |
56 | |
47 | vpn network; // THE vpn (bad design...) |
57 | vpn network; // THE vpn (bad design...) |
48 | |
58 | |
49 | ///////////////////////////////////////////////////////////////////////////// |
59 | ///////////////////////////////////////////////////////////////////////////// |
50 | |
60 | |
|
|
61 | static void inline |
|
|
62 | set_tos (int fd, int &tos_prev, int tos) |
|
|
63 | { |
|
|
64 | #if defined(SOL_IP) && defined(IP_TOS) |
|
|
65 | if (tos_prev == tos) |
|
|
66 | return; |
|
|
67 | |
|
|
68 | tos_prev = tos; |
|
|
69 | setsockopt (fd, SOL_IP, IP_TOS, &tos, sizeof tos); |
|
|
70 | #endif |
|
|
71 | } |
|
|
72 | |
51 | void |
73 | void |
52 | vpn::script_init_env () |
74 | vpn::script_init_env () |
53 | { |
75 | { |
54 | // the tunnel device mtu should be the physical mtu - overhead |
76 | // the tunnel device mtu should be the physical mtu - overhead |
55 | // the tricky part is rounding to the cipher key blocksize |
77 | // the tricky part is rounding to the cipher key blocksize |
… | |
… | |
58 | mtu -= mtu % EVP_CIPHER_block_size (CIPHER); // round |
80 | mtu -= mtu % EVP_CIPHER_block_size (CIPHER); // round |
59 | mtu -= ETH_OVERHEAD - 6 - 6; // and get interface mtu again |
81 | mtu -= ETH_OVERHEAD - 6 - 6; // and get interface mtu again |
60 | |
82 | |
61 | char *env; |
83 | char *env; |
62 | asprintf (&env, "CONFBASE=%s", confbase); putenv (env); |
84 | asprintf (&env, "CONFBASE=%s", confbase); putenv (env); |
63 | asprintf (&env, "NODENAME=%s", THISNODE->nodename); putenv (env); |
|
|
64 | asprintf (&env, "NODEID=%d", THISNODE->id); putenv (env); |
|
|
65 | asprintf (&env, "IFNAME=%s", tap->interface ()); putenv (env); |
85 | asprintf (&env, "IFNAME=%s", tap->interface ()); putenv (env); |
66 | asprintf (&env, "IFTYPE=%s", IFTYPE); putenv (env); |
86 | asprintf (&env, "IFTYPE=%s", IFTYPE); putenv (env); |
67 | asprintf (&env, "IFSUBTYPE=%s", IFSUBTYPE); putenv (env); |
87 | asprintf (&env, "IFSUBTYPE=%s", IFSUBTYPE); putenv (env); |
68 | asprintf (&env, "MTU=%d", mtu); putenv (env); |
88 | asprintf (&env, "MTU=%d", mtu); putenv (env); |
69 | asprintf (&env, "MAC=%02x:%02x:%02x:%02x:%02x:%02x", |
89 | asprintf (&env, "NODES=%d", conns.size ()); putenv (env); |
70 | 0xfe, 0xfd, 0x80, 0x00, THISNODE->id >> 8, |
90 | asprintf (&env, "NODEID=%d", THISNODE->id); putenv (env); |
71 | THISNODE->id & 0xff); putenv (env); |
|
|
72 | |
91 | |
73 | // TODO: info for other nodes, maybe? |
92 | conns [THISNODE->id - 1]->script_init_env (""); |
74 | } |
|
|
75 | |
93 | |
|
|
94 | for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c) |
|
|
95 | { |
|
|
96 | char ext[16]; |
|
|
97 | snprintf (ext, 16, "_%d", (*c)->conf->id); |
|
|
98 | (*c)->script_init_env (ext); |
|
|
99 | } |
|
|
100 | } |
|
|
101 | |
|
|
102 | inline const char * |
76 | const char *vpn::script_if_init () |
103 | vpn::script_if_init () |
77 | { |
104 | { |
78 | script_init_env (); |
105 | script_init_env (); |
79 | |
106 | |
80 | return tap->if_up (); |
107 | return tap->if_up (); |
81 | } |
108 | } |
82 | |
109 | |
|
|
110 | inline const char * |
83 | const char *vpn::script_if_up () |
111 | vpn::script_if_up () |
84 | { |
112 | { |
85 | script_init_env (); |
113 | script_init_env (); |
86 | |
114 | |
87 | char *filename; |
115 | char *filename; |
88 | asprintf (&filename, |
116 | asprintf (&filename, |
… | |
… | |
94 | } |
122 | } |
95 | |
123 | |
96 | int |
124 | int |
97 | vpn::setup () |
125 | vpn::setup () |
98 | { |
126 | { |
|
|
127 | ipv4_tos = -1; |
99 | ipv4_fd = -1; |
128 | ipv4_fd = -1; |
100 | |
129 | |
101 | if (THISNODE->protocols & PROT_IPv4 && ::conf.ip_proto) |
130 | if (THISNODE->protocols & PROT_IPv4 && ::conf.ip_proto) |
102 | { |
131 | { |
103 | ipv4_fd = socket (PF_INET, SOCK_RAW, ::conf.ip_proto); |
132 | ipv4_fd = socket (PF_INET, SOCK_RAW, ::conf.ip_proto); |
104 | |
133 | |
105 | if (ipv4_fd < 0) |
134 | if (ipv4_fd < 0) |
106 | return -1; |
135 | return -1; |
107 | |
136 | |
108 | fcntl (ipv4_fd, F_SETFL, O_NONBLOCK); |
137 | fcntl (ipv4_fd, F_SETFL, O_NONBLOCK); |
|
|
138 | fcntl (ipv4_fd, F_SETFD, FD_CLOEXEC); |
109 | |
139 | |
110 | #if defined(SOL_IP) && defined(IP_MTU_DISCOVER) |
140 | #if defined(SOL_IP) && defined(IP_MTU_DISCOVER) |
111 | // this I really consider a linux bug. I am neither connected |
141 | // this I really consider a linux bug. I am neither connected |
112 | // nor do I fragment myself. Linux still sets DF and doesn't |
142 | // nor do I fragment myself. Linux still sets DF and doesn't |
113 | // fragment for me sometimes. |
143 | // fragment for me sometimes. |
… | |
… | |
123 | { |
153 | { |
124 | slog (L_ERR, _("can't bind ipv4 socket on %s: %s"), (const char *)si, strerror (errno)); |
154 | slog (L_ERR, _("can't bind ipv4 socket on %s: %s"), (const char *)si, strerror (errno)); |
125 | exit (EXIT_FAILURE); |
155 | exit (EXIT_FAILURE); |
126 | } |
156 | } |
127 | |
157 | |
128 | ipv4_ev_watcher.start (ipv4_fd, EVENT_READ); |
158 | ipv4_ev_watcher.start (ipv4_fd, EV_READ); |
129 | } |
159 | } |
130 | |
160 | |
|
|
161 | udpv4_tos = -1; |
131 | udpv4_fd = -1; |
162 | udpv4_fd = -1; |
132 | |
163 | |
133 | if (THISNODE->protocols & PROT_UDPv4 && THISNODE->udp_port) |
164 | if (THISNODE->protocols & PROT_UDPv4 && THISNODE->udp_port) |
134 | { |
165 | { |
135 | udpv4_fd = socket (PF_INET, SOCK_DGRAM, IPPROTO_UDP); |
166 | udpv4_fd = socket (PF_INET, SOCK_DGRAM, IPPROTO_UDP); |
136 | |
167 | |
137 | if (udpv4_fd < 0) |
168 | if (udpv4_fd < 0) |
138 | return -1; |
169 | return -1; |
139 | |
170 | |
140 | fcntl (udpv4_fd, F_SETFL, O_NONBLOCK); |
171 | fcntl (udpv4_fd, F_SETFL, O_NONBLOCK); |
|
|
172 | fcntl (udpv4_fd, F_SETFD, FD_CLOEXEC); |
141 | |
173 | |
142 | // standard daemon practise... |
174 | // standard daemon practise... |
143 | { |
175 | { |
144 | int oval = 1; |
176 | int oval = 1; |
145 | setsockopt (udpv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval); |
177 | setsockopt (udpv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval); |
… | |
… | |
161 | { |
193 | { |
162 | slog (L_ERR, _("can't bind udpv4 on %s: %s"), (const char *)si, strerror (errno)); |
194 | slog (L_ERR, _("can't bind udpv4 on %s: %s"), (const char *)si, strerror (errno)); |
163 | exit (EXIT_FAILURE); |
195 | exit (EXIT_FAILURE); |
164 | } |
196 | } |
165 | |
197 | |
166 | udpv4_ev_watcher.start (udpv4_fd, EVENT_READ); |
198 | udpv4_ev_watcher.start (udpv4_fd, EV_READ); |
167 | } |
199 | } |
168 | |
200 | |
|
|
201 | icmpv4_tos = -1; |
169 | icmpv4_fd = -1; |
202 | icmpv4_fd = -1; |
170 | |
203 | |
171 | #if ENABLE_ICMP |
204 | #if ENABLE_ICMP |
172 | if (THISNODE->protocols & PROT_ICMPv4) |
205 | if (THISNODE->protocols & PROT_ICMPv4) |
173 | { |
206 | { |
174 | icmpv4_fd = socket (PF_INET, SOCK_RAW, IPPROTO_ICMP); |
207 | icmpv4_fd = socket (PF_INET, SOCK_RAW, IPPROTO_ICMP); |
175 | |
208 | |
176 | if (icmpv4_fd < 0) |
209 | if (icmpv4_fd < 0) |
177 | return -1; |
210 | return -1; |
178 | |
211 | |
179 | fcntl (icmpv4_fd, F_SETFL, O_NONBLOCK); |
212 | fcntl (icmpv4_fd, F_SETFL, O_NONBLOCK); |
|
|
213 | fcntl (icmpv4_fd, F_SETFD, FD_CLOEXEC); |
180 | |
214 | |
181 | #ifdef ICMP_FILTER |
215 | #ifdef ICMP_FILTER |
182 | { |
216 | { |
183 | icmp_filter oval; |
217 | icmp_filter oval; |
184 | oval.data = 0xffffffff; |
218 | oval.data = 0xffffffff; |
… | |
… | |
193 | // this I really consider a linux bug. I am neither connected |
227 | // this I really consider a linux bug. I am neither connected |
194 | // nor do I fragment myself. Linux still sets DF and doesn't |
228 | // nor do I fragment myself. Linux still sets DF and doesn't |
195 | // fragment for me sometimes. |
229 | // fragment for me sometimes. |
196 | { |
230 | { |
197 | int oval = IP_PMTUDISC_DONT; |
231 | int oval = IP_PMTUDISC_DONT; |
198 | setsockopt (udpv4_fd, SOL_IP, IP_MTU_DISCOVER, &oval, sizeof oval); |
232 | setsockopt (icmpv4_fd, SOL_IP, IP_MTU_DISCOVER, &oval, sizeof oval); |
199 | } |
233 | } |
200 | #endif |
234 | #endif |
201 | |
235 | |
202 | sockinfo si (THISNODE, PROT_ICMPv4); |
236 | sockinfo si (THISNODE, PROT_ICMPv4); |
203 | |
237 | |
… | |
… | |
205 | { |
239 | { |
206 | slog (L_ERR, _("can't bind icmpv4 on %s: %s"), (const char *)si, strerror (errno)); |
240 | slog (L_ERR, _("can't bind icmpv4 on %s: %s"), (const char *)si, strerror (errno)); |
207 | exit (EXIT_FAILURE); |
241 | exit (EXIT_FAILURE); |
208 | } |
242 | } |
209 | |
243 | |
210 | icmpv4_ev_watcher.start (icmpv4_fd, EVENT_READ); |
244 | icmpv4_ev_watcher.start (icmpv4_fd, EV_READ); |
211 | } |
245 | } |
212 | #endif |
246 | #endif |
213 | |
247 | |
214 | tcpv4_fd = -1; |
248 | tcpv4_fd = -1; |
215 | |
249 | |
… | |
… | |
220 | |
254 | |
221 | if (tcpv4_fd < 0) |
255 | if (tcpv4_fd < 0) |
222 | return -1; |
256 | return -1; |
223 | |
257 | |
224 | fcntl (tcpv4_fd, F_SETFL, O_NONBLOCK); |
258 | fcntl (tcpv4_fd, F_SETFL, O_NONBLOCK); |
|
|
259 | fcntl (tcpv4_fd, F_SETFD, FD_CLOEXEC); |
225 | |
260 | |
226 | // standard daemon practise... |
261 | // standard daemon practise... |
227 | { |
262 | { |
228 | int oval = 1; |
263 | int oval = 1; |
229 | setsockopt (tcpv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval); |
264 | setsockopt (tcpv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval); |
… | |
… | |
241 | { |
276 | { |
242 | slog (L_ERR, _("can't listen tcpv4 on %s: %s"), (const char *)si, strerror (errno)); |
277 | slog (L_ERR, _("can't listen tcpv4 on %s: %s"), (const char *)si, strerror (errno)); |
243 | exit (EXIT_FAILURE); |
278 | exit (EXIT_FAILURE); |
244 | } |
279 | } |
245 | |
280 | |
246 | tcpv4_ev_watcher.start (tcpv4_fd, EVENT_READ); |
281 | tcpv4_ev_watcher.start (tcpv4_fd, EV_READ); |
247 | } |
282 | } |
248 | #endif |
283 | #endif |
|
|
284 | |
|
|
285 | dnsv4_tos = -1; |
|
|
286 | dnsv4_fd = -1; |
249 | |
287 | |
250 | #if ENABLE_DNS |
288 | #if ENABLE_DNS |
251 | if (THISNODE->protocols & PROT_DNSv4) |
289 | if (THISNODE->protocols & PROT_DNSv4) |
252 | { |
290 | { |
253 | dns_forwarder.set (::conf.dns_forw_host, ::conf.dns_forw_port, PROT_DNSv4); |
291 | dns_forwarder.set (::conf.dns_forw_host, ::conf.dns_forw_port, PROT_DNSv4); |
… | |
… | |
255 | dnsv4_fd = socket (PF_INET, SOCK_DGRAM, IPPROTO_UDP); |
293 | dnsv4_fd = socket (PF_INET, SOCK_DGRAM, IPPROTO_UDP); |
256 | |
294 | |
257 | if (dnsv4_fd < 0) |
295 | if (dnsv4_fd < 0) |
258 | return -1; |
296 | return -1; |
259 | |
297 | |
|
|
298 | fcntl (dnsv4_fd, F_SETFL, O_NONBLOCK); |
|
|
299 | fcntl (dnsv4_fd, F_SETFD, FD_CLOEXEC); |
|
|
300 | |
260 | #if defined(SOL_IP) && defined(IP_MTU_DISCOVER) |
301 | # if defined(SOL_IP) && defined(IP_MTU_DISCOVER) |
261 | // this I really consider a linux bug. I am neither connected |
302 | // this I really consider a linux bug. I am neither connected |
262 | // nor do I fragment myself. Linux still sets DF and doesn't |
303 | // nor do I fragment myself. Linux still sets DF and doesn't |
263 | // fragment for me sometimes. |
304 | // fragment for me sometimes. |
264 | { |
305 | { |
265 | int oval = IP_PMTUDISC_DONT; |
306 | int oval = IP_PMTUDISC_DONT; |
266 | setsockopt (udpv4_fd, SOL_IP, IP_MTU_DISCOVER, &oval, sizeof oval); |
307 | setsockopt (dnsv4_fd, SOL_IP, IP_MTU_DISCOVER, &oval, sizeof oval); |
267 | } |
308 | } |
268 | #endif |
309 | # endif |
269 | |
310 | |
270 | // standard daemon practise... |
311 | // standard daemon practise... |
271 | { |
312 | { |
272 | int oval = 1; |
313 | int oval = 1; |
273 | setsockopt (dnsv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval); |
314 | setsockopt (dnsv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval); |
… | |
… | |
281 | { |
322 | { |
282 | slog (L_ERR, _("can't bind dnsv4 on %s: %s"), (const char *)si, strerror (errno)); |
323 | slog (L_ERR, _("can't bind dnsv4 on %s: %s"), (const char *)si, strerror (errno)); |
283 | exit (EXIT_FAILURE); |
324 | exit (EXIT_FAILURE); |
284 | } |
325 | } |
285 | |
326 | |
286 | dnsv4_ev_watcher.start (dnsv4_fd, EVENT_READ); |
327 | dnsv4_ev_watcher.start (dnsv4_fd, EV_READ); |
287 | } |
328 | } |
288 | #endif |
329 | #endif |
|
|
330 | |
|
|
331 | ///////////////////////////////////////////////////////////////////////////// |
|
|
332 | |
|
|
333 | reconnect_all (); |
|
|
334 | |
|
|
335 | ///////////////////////////////////////////////////////////////////////////// |
289 | |
336 | |
290 | tap = new tap_device (); |
337 | tap = new tap_device (); |
291 | if (!tap) //D this, of course, never catches |
338 | if (!tap) //D this, of course, never catches |
292 | { |
339 | { |
293 | slog (L_ERR, _("cannot create network interface '%s'"), conf.ifname); |
340 | slog (L_ERR, _("cannot create network interface '%s'"), conf.ifname); |
294 | exit (EXIT_FAILURE); |
341 | exit (EXIT_FAILURE); |
295 | } |
342 | } |
296 | |
343 | |
|
|
344 | fcntl (tap->fd, F_SETFD, FD_CLOEXEC); |
|
|
345 | |
|
|
346 | run_script_cb cb; |
|
|
347 | cb.set<vpn, &vpn::script_if_init> (this); |
|
|
348 | |
297 | if (tap->if_up () && |
349 | if (tap->if_up () && |
298 | !run_script (run_script_cb (this, &vpn::script_if_init), true)) |
350 | !run_script (cb, true)) |
299 | { |
351 | { |
300 | slog (L_ERR, _("interface initialization command '%s' failed, exiting."), |
352 | slog (L_ERR, _("interface initialization command '%s' failed, exiting."), |
301 | tap->if_up ()); |
353 | tap->if_up ()); |
302 | exit (EXIT_FAILURE); |
354 | exit (EXIT_FAILURE); |
303 | } |
355 | } |
304 | |
356 | |
305 | if (!run_script (run_script_cb (this, &vpn::script_if_up), true)) |
357 | cb.set<vpn, &vpn::script_if_up> (this); |
|
|
358 | if (!run_script (cb, true)) |
306 | { |
359 | { |
307 | slog (L_ERR, _("if-up command execution failed, exiting.")); |
360 | slog (L_ERR, _("if-up command execution failed, exiting.")); |
308 | exit (EXIT_FAILURE); |
361 | exit (EXIT_FAILURE); |
309 | } |
362 | } |
310 | |
363 | |
311 | tap_ev_watcher.start (tap->fd, EVENT_READ); |
364 | tap_ev_watcher.start (tap->fd, EV_READ); |
312 | |
|
|
313 | reconnect_all (); |
|
|
314 | |
365 | |
315 | return 0; |
366 | return 0; |
316 | } |
367 | } |
317 | |
368 | |
318 | bool |
369 | bool |
319 | vpn::send_ipv4_packet (vpn_packet *pkt, const sockinfo &si, int tos) |
370 | vpn::send_ipv4_packet (vpn_packet *pkt, const sockinfo &si, int tos) |
320 | { |
371 | { |
321 | #if defined(SOL_IP) && defined(IP_TOS) |
372 | set_tos (ipv4_fd, ipv4_tos, tos); |
322 | setsockopt (ipv4_fd, SOL_IP, IP_TOS, &tos, sizeof tos); |
|
|
323 | #endif |
|
|
324 | sendto (ipv4_fd, &((*pkt)[0]), pkt->len, 0, si.sav4 (), si.salenv4 ()); |
373 | sendto (ipv4_fd, &((*pkt)[0]), pkt->len, 0, si.sav4 (), si.salenv4 ()); |
325 | |
374 | |
326 | return true; |
375 | return true; |
327 | } |
376 | } |
328 | |
377 | |
… | |
… | |
351 | |
400 | |
352 | #if ENABLE_ICMP |
401 | #if ENABLE_ICMP |
353 | bool |
402 | bool |
354 | vpn::send_icmpv4_packet (vpn_packet *pkt, const sockinfo &si, int tos) |
403 | vpn::send_icmpv4_packet (vpn_packet *pkt, const sockinfo &si, int tos) |
355 | { |
404 | { |
356 | #if defined(SOL_IP) && defined(IP_TOS) |
|
|
357 | setsockopt (icmpv4_fd, SOL_IP, IP_TOS, &tos, sizeof tos); |
|
|
358 | #endif |
|
|
359 | |
|
|
360 | pkt->unshift_hdr (4); |
405 | pkt->unshift_hdr (4); |
361 | |
406 | |
362 | icmp_header *hdr = (icmp_header *)&((*pkt)[0]); |
407 | icmp_header *hdr = (icmp_header *)&((*pkt)[0]); |
363 | hdr->type = ::conf.icmp_type; |
408 | hdr->type = ::conf.icmp_type; |
364 | hdr->code = 255; |
409 | hdr->code = 255; |
365 | hdr->checksum = 0; |
410 | hdr->checksum = 0; |
366 | hdr->checksum = ipv4_checksum ((u16 *)hdr, pkt->len); |
411 | hdr->checksum = ipv4_checksum ((u16 *)hdr, pkt->len); |
367 | |
412 | |
|
|
413 | set_tos (icmpv4_fd, icmpv4_tos, tos); |
368 | sendto (icmpv4_fd, &((*pkt)[0]), pkt->len, 0, si.sav4 (), si.salenv4 ()); |
414 | sendto (icmpv4_fd, &((*pkt)[0]), pkt->len, 0, si.sav4 (), si.salenv4 ()); |
369 | |
415 | |
370 | return true; |
416 | return true; |
371 | } |
417 | } |
372 | #endif |
418 | #endif |
373 | |
419 | |
374 | bool |
420 | bool |
375 | vpn::send_udpv4_packet (vpn_packet *pkt, const sockinfo &si, int tos) |
421 | vpn::send_udpv4_packet (vpn_packet *pkt, const sockinfo &si, int tos) |
376 | { |
422 | { |
377 | #if defined(SOL_IP) && defined(IP_TOS) |
423 | set_tos (udpv4_fd, udpv4_tos, tos); |
378 | setsockopt (udpv4_fd, SOL_IP, IP_TOS, &tos, sizeof tos); |
|
|
379 | #endif |
|
|
380 | sendto (udpv4_fd, &((*pkt)[0]), pkt->len, 0, si.sav4 (), si.salenv4 ()); |
424 | sendto (udpv4_fd, &((*pkt)[0]), pkt->len, 0, si.sav4 (), si.salenv4 ()); |
381 | |
425 | |
382 | return true; |
426 | return true; |
383 | } |
427 | } |
384 | |
428 | |
… | |
… | |
395 | { |
439 | { |
396 | // broadcast, this is ugly, but due to the security policy |
440 | // broadcast, this is ugly, but due to the security policy |
397 | // we have to connect to all hosts... |
441 | // we have to connect to all hosts... |
398 | for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c) |
442 | for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c) |
399 | if ((*c)->conf != THISNODE) |
443 | if ((*c)->conf != THISNODE) |
400 | (*c)->inject_data_packet (pkt, true); |
444 | (*c)->inject_data_packet (pkt); |
401 | } |
445 | } |
402 | } |
446 | } |
403 | |
447 | |
404 | void |
448 | void |
405 | vpn::recv_vpn_packet (vpn_packet *pkt, const sockinfo &rsi) |
449 | vpn::recv_vpn_packet (vpn_packet *pkt, const sockinfo &rsi) |
… | |
… | |
446 | { |
490 | { |
447 | switch (si.prot) |
491 | switch (si.prot) |
448 | { |
492 | { |
449 | case PROT_IPv4: |
493 | case PROT_IPv4: |
450 | return send_ipv4_packet (pkt, si, tos); |
494 | return send_ipv4_packet (pkt, si, tos); |
|
|
495 | |
451 | case PROT_UDPv4: |
496 | case PROT_UDPv4: |
452 | return send_udpv4_packet (pkt, si, tos); |
497 | return send_udpv4_packet (pkt, si, tos); |
|
|
498 | |
453 | #if ENABLE_TCP |
499 | #if ENABLE_TCP |
454 | case PROT_TCPv4: |
500 | case PROT_TCPv4: |
455 | return send_tcpv4_packet (pkt, si, tos); |
501 | return send_tcpv4_packet (pkt, si, tos); |
456 | #endif |
502 | #endif |
457 | #if ENABLE_ICMP |
503 | #if ENABLE_ICMP |
… | |
… | |
460 | #endif |
506 | #endif |
461 | #if ENABLE_DNS |
507 | #if ENABLE_DNS |
462 | case PROT_DNSv4: |
508 | case PROT_DNSv4: |
463 | return send_dnsv4_packet (pkt, si, tos); |
509 | return send_dnsv4_packet (pkt, si, tos); |
464 | #endif |
510 | #endif |
465 | |
|
|
466 | default: |
511 | default: |
467 | slog (L_CRIT, _("%s: FATAL: trying to send packet with unsupported protocol"), (const char *)si); |
512 | slog (L_CRIT, _("%s: FATAL: trying to send packet with unsupported protocol"), (const char *)si); |
468 | } |
513 | } |
469 | |
514 | |
470 | return false; |
515 | return false; |
471 | } |
516 | } |
472 | |
517 | |
473 | void |
518 | inline void |
474 | vpn::ipv4_ev (io_watcher &w, short revents) |
519 | vpn::ipv4_ev (ev::io &w, int revents) |
475 | { |
520 | { |
476 | if (revents & EVENT_READ) |
521 | if (revents & EV_READ) |
477 | { |
522 | { |
478 | vpn_packet *pkt = new vpn_packet; |
523 | vpn_packet *pkt = new vpn_packet; |
479 | struct sockaddr_in sa; |
524 | struct sockaddr_in sa; |
480 | socklen_t sa_len = sizeof (sa); |
525 | socklen_t sa_len = sizeof (sa); |
481 | int len; |
526 | int len; |
… | |
… | |
509 | exit (EXIT_FAILURE); |
554 | exit (EXIT_FAILURE); |
510 | } |
555 | } |
511 | } |
556 | } |
512 | |
557 | |
513 | #if ENABLE_ICMP |
558 | #if ENABLE_ICMP |
514 | void |
559 | inline void |
515 | vpn::icmpv4_ev (io_watcher &w, short revents) |
560 | vpn::icmpv4_ev (ev::io &w, int revents) |
516 | { |
561 | { |
517 | if (revents & EVENT_READ) |
562 | if (revents & EV_READ) |
518 | { |
563 | { |
519 | vpn_packet *pkt = new vpn_packet; |
564 | vpn_packet *pkt = new vpn_packet; |
520 | struct sockaddr_in sa; |
565 | struct sockaddr_in sa; |
521 | socklen_t sa_len = sizeof (sa); |
566 | socklen_t sa_len = sizeof (sa); |
522 | int len; |
567 | int len; |
… | |
… | |
557 | exit (EXIT_FAILURE); |
602 | exit (EXIT_FAILURE); |
558 | } |
603 | } |
559 | } |
604 | } |
560 | #endif |
605 | #endif |
561 | |
606 | |
562 | void |
607 | inline void |
563 | vpn::udpv4_ev (io_watcher &w, short revents) |
608 | vpn::udpv4_ev (ev::io &w, int revents) |
564 | { |
609 | { |
565 | if (revents & EVENT_READ) |
610 | if (revents & EV_READ) |
566 | { |
611 | { |
567 | vpn_packet *pkt = new vpn_packet; |
612 | vpn_packet *pkt = new vpn_packet; |
568 | struct sockaddr_in sa; |
613 | struct sockaddr_in sa; |
569 | socklen_t sa_len = sizeof (sa); |
614 | socklen_t sa_len = sizeof (sa); |
570 | int len; |
615 | int len; |
… | |
… | |
594 | revents); |
639 | revents); |
595 | exit (EXIT_FAILURE); |
640 | exit (EXIT_FAILURE); |
596 | } |
641 | } |
597 | } |
642 | } |
598 | |
643 | |
599 | void |
644 | inline void |
600 | vpn::tap_ev (io_watcher &w, short revents) |
645 | vpn::tap_ev (ev::io &w, int revents) |
601 | { |
646 | { |
602 | if (revents & EVENT_READ) |
647 | if (revents & EV_READ) |
603 | { |
648 | { |
604 | /* process data */ |
649 | /* process data */ |
605 | tap_packet *pkt; |
650 | tap_packet *pkt; |
606 | |
651 | |
607 | pkt = tap->recv (); |
652 | pkt = tap->recv (); |
… | |
… | |
636 | } |
681 | } |
637 | else |
682 | else |
638 | abort (); |
683 | abort (); |
639 | } |
684 | } |
640 | |
685 | |
641 | void |
686 | inline void |
642 | vpn::event_cb (time_watcher &w) |
687 | vpn::event_cb (ev::timer &w, int) |
643 | { |
688 | { |
644 | if (events) |
689 | if (events) |
645 | { |
690 | { |
646 | if (events & EVENT_SHUTDOWN) |
691 | if (events & EVENT_SHUTDOWN) |
647 | { |
692 | { |
… | |
… | |
731 | slog (L_NOTICE, _("node %s (id %d)"), conf->nodename, conf->id); |
776 | slog (L_NOTICE, _("node %s (id %d)"), conf->nodename, conf->id); |
732 | slog (L_NOTICE, _(" connectmode %d (%d) / sockaddr %s / minor %d"), |
777 | slog (L_NOTICE, _(" connectmode %d (%d) / sockaddr %s / minor %d"), |
733 | connectmode, conf->connectmode, (const char *)si, (int)prot_minor); |
778 | connectmode, conf->connectmode, (const char *)si, (int)prot_minor); |
734 | slog (L_NOTICE, _(" ictx/octx %08lx/%08lx / oseqno %d / retry_cnt %d"), |
779 | slog (L_NOTICE, _(" ictx/octx %08lx/%08lx / oseqno %d / retry_cnt %d"), |
735 | (long)ictx, (long)octx, (int)oseqno, (int)retry_cnt); |
780 | (long)ictx, (long)octx, (int)oseqno, (int)retry_cnt); |
736 | slog (L_NOTICE, _(" establish_conn %ld / rekey %ld / keepalive %ld"), |
|
|
737 | (long)(establish_connection.at), (long)(rekey.at), (long)(keepalive.at)); |
|
|
738 | } |
781 | } |
739 | |
782 | |
740 | void |
783 | void |
741 | vpn::dump_status () |
784 | vpn::dump_status () |
742 | { |
785 | { |
743 | slog (L_NOTICE, _("BEGIN status dump (%ld)"), (long)NOW); |
786 | slog (L_NOTICE, _("BEGIN status dump (%ld)"), (long)ev_now ()); |
744 | |
787 | |
745 | for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c) |
788 | for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c) |
746 | (*c)->dump_status (); |
789 | (*c)->dump_status (); |
747 | |
790 | |
748 | slog (L_NOTICE, _("END status dump")); |
791 | slog (L_NOTICE, _("END status dump")); |
749 | } |
792 | } |
750 | |
793 | |
751 | vpn::vpn (void) |
794 | vpn::vpn (void) |
|
|
795 | { |
752 | : event (this, &vpn::event_cb) |
796 | event .set<vpn, &vpn::event_cb > (this); |
753 | , udpv4_ev_watcher (this, &vpn::udpv4_ev) |
797 | udpv4_ev_watcher .set<vpn, &vpn::udpv4_ev > (this); |
754 | , ipv4_ev_watcher (this, &vpn::ipv4_ev) |
798 | ipv4_ev_watcher .set<vpn, &vpn::ipv4_ev > (this); |
755 | #if ENABLE_TCP |
799 | #if ENABLE_TCP |
756 | , tcpv4_ev_watcher (this, &vpn::tcpv4_ev) |
800 | tcpv4_ev_watcher .set<vpn, &vpn::tcpv4_ev > (this); |
757 | #endif |
801 | #endif |
758 | #if ENABLE_ICMP |
802 | #if ENABLE_ICMP |
759 | , icmpv4_ev_watcher(this, &vpn::icmpv4_ev) |
803 | icmpv4_ev_watcher.set<vpn, &vpn::icmpv4_ev> (this); |
760 | #endif |
804 | #endif |
761 | #if ENABLE_DNS |
805 | #if ENABLE_DNS |
762 | , dnsv4_ev_watcher (this, &vpn::dnsv4_ev) |
806 | dnsv4_ev_watcher .set<vpn, &vpn::dnsv4_ev > (this); |
763 | #endif |
807 | #endif |
764 | , tap_ev_watcher (this, &vpn::tap_ev) |
808 | tap_ev_watcher .set<vpn, &vpn::tap_ev > (this); |
765 | { |
|
|
766 | } |
809 | } |
767 | |
810 | |
768 | vpn::~vpn () |
811 | vpn::~vpn () |
769 | { |
812 | { |
770 | } |
813 | } |