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 | |
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20 | Additional permission under GNU GPL version 3 section 7 |
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21 | |
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22 | If you modify this Program, or any covered work, by linking or |
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23 | combining it with the OpenSSL project's OpenSSL library (or a modified |
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24 | version of that library), containing parts covered by the terms of the |
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25 | OpenSSL or SSLeay licenses, the licensors of this Program grant you |
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26 | additional permission to convey the resulting work. Corresponding |
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27 | Source for a non-source form of such a combination shall include the |
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28 | source code for the parts of OpenSSL used as well as that of the |
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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 | |
51 | const char *vpn::script_if_up () |
61 | static void inline |
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62 | set_tos (int fd, int &tos_prev, int tos) |
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63 | { |
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64 | #if defined(SOL_IP) && defined(IP_TOS) |
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65 | if (tos_prev == tos) |
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66 | return; |
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67 | |
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68 | tos_prev = tos; |
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69 | setsockopt (fd, SOL_IP, IP_TOS, &tos, sizeof tos); |
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70 | #endif |
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71 | } |
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72 | |
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73 | void |
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74 | vpn::script_init_env () |
52 | { |
75 | { |
53 | // the tunnel device mtu should be the physical mtu - overhead |
76 | // the tunnel device mtu should be the physical mtu - overhead |
54 | // the tricky part is rounding to the cipher key blocksize |
77 | // the tricky part is rounding to the cipher key blocksize |
55 | int mtu = conf.mtu - ETH_OVERHEAD - VPE_OVERHEAD - MAX_OVERHEAD; |
78 | int mtu = conf.mtu - ETH_OVERHEAD - VPE_OVERHEAD - MAX_OVERHEAD; |
56 | mtu += ETH_OVERHEAD - 6 - 6; // now we have the data portion |
79 | mtu += ETH_OVERHEAD - 6 - 6; // now we have the data portion |
57 | mtu -= mtu % EVP_CIPHER_block_size (CIPHER); // round |
80 | mtu -= mtu % EVP_CIPHER_block_size (CIPHER); // round |
58 | mtu -= ETH_OVERHEAD - 6 - 6; // and get interface mtu again |
81 | mtu -= ETH_OVERHEAD - 6 - 6; // and get interface mtu again |
59 | |
82 | |
60 | char *env; |
83 | char *env; |
61 | asprintf (&env, "CONFBASE=%s", confbase); putenv (env); |
84 | asprintf (&env, "CONFBASE=%s", confbase); putenv (env); |
62 | asprintf (&env, "NODENAME=%s", THISNODE->nodename); putenv (env); |
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63 | asprintf (&env, "NODEID=%d", THISNODE->id); putenv (env); |
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64 | asprintf (&env, "IFNAME=%s", tap->interface ()); putenv (env); |
85 | asprintf (&env, "IFNAME=%s", tap->interface ()); putenv (env); |
65 | asprintf (&env, "IFTYPE=%s", IFTYPE); putenv (env); |
86 | asprintf (&env, "IFTYPE=%s", IFTYPE); putenv (env); |
66 | asprintf (&env, "IFSUBTYPE=%s", IFSUBTYPE); putenv (env); |
87 | asprintf (&env, "IFSUBTYPE=%s", IFSUBTYPE); putenv (env); |
67 | asprintf (&env, "MTU=%d", mtu); putenv (env); |
88 | asprintf (&env, "MTU=%d", mtu); putenv (env); |
68 | asprintf (&env, "MAC=%02x:%02x:%02x:%02x:%02x:%02x", |
89 | asprintf (&env, "NODES=%d", conns.size ()); putenv (env); |
69 | 0xfe, 0xfd, 0x80, 0x00, THISNODE->id >> 8, |
90 | asprintf (&env, "NODEID=%d", THISNODE->id); putenv (env); |
70 | THISNODE->id & 0xff); |
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71 | putenv (env); |
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72 | |
91 | |
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92 | conns [THISNODE->id - 1]->script_init_env (""); |
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93 | |
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94 | for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c) |
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95 | { |
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96 | char ext[16]; |
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97 | snprintf (ext, 16, "_%d", (*c)->conf->id); |
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98 | (*c)->script_init_env (ext); |
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99 | } |
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100 | } |
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101 | |
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102 | inline const char * |
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103 | vpn::script_if_init () |
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104 | { |
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105 | script_init_env (); |
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106 | |
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107 | return tap->if_up (); |
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108 | } |
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109 | |
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110 | inline const char * |
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111 | vpn::script_if_up () |
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112 | { |
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113 | script_init_env (); |
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114 | |
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115 | char *filename; |
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116 | asprintf (&filename, |
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117 | "%s/%s", |
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118 | confbase, |
73 | return ::conf.script_if_up ? ::conf.script_if_up : "if-up"; |
119 | ::conf.script_if_up ? ::conf.script_if_up : "if-up"); |
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120 | |
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121 | return filename; |
74 | } |
122 | } |
75 | |
123 | |
76 | int |
124 | int |
77 | vpn::setup () |
125 | vpn::setup () |
78 | { |
126 | { |
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127 | ipv4_tos = -1; |
79 | ipv4_fd = -1; |
128 | ipv4_fd = -1; |
80 | |
129 | |
81 | if (THISNODE->protocols & PROT_IPv4 && ::conf.ip_proto) |
130 | if (THISNODE->protocols & PROT_IPv4 && ::conf.ip_proto) |
82 | { |
131 | { |
83 | ipv4_fd = socket (PF_INET, SOCK_RAW, ::conf.ip_proto); |
132 | ipv4_fd = socket (PF_INET, SOCK_RAW, ::conf.ip_proto); |
84 | |
133 | |
85 | if (ipv4_fd < 0) |
134 | if (ipv4_fd < 0) |
86 | return -1; |
135 | return -1; |
87 | |
136 | |
88 | fcntl (ipv4_fd, F_SETFL, O_NONBLOCK); |
137 | fcntl (ipv4_fd, F_SETFL, O_NONBLOCK); |
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138 | fcntl (ipv4_fd, F_SETFD, FD_CLOEXEC); |
89 | |
139 | |
90 | #if defined(SOL_IP) && defined(IP_MTU_DISCOVER) |
140 | #if defined(SOL_IP) && defined(IP_MTU_DISCOVER) |
91 | // this I really consider a linux bug. I am neither connected |
141 | // this I really consider a linux bug. I am neither connected |
92 | // 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 |
93 | // fragment for me sometimes. |
143 | // fragment for me sometimes. |
… | |
… | |
99 | |
149 | |
100 | sockinfo si (THISNODE, PROT_IPv4); |
150 | sockinfo si (THISNODE, PROT_IPv4); |
101 | |
151 | |
102 | if (bind (ipv4_fd, si.sav4 (), si.salenv4 ())) |
152 | if (bind (ipv4_fd, si.sav4 (), si.salenv4 ())) |
103 | { |
153 | { |
104 | 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, exiting."), (const char *)si, strerror (errno)); |
105 | exit (EXIT_FAILURE); |
155 | exit (EXIT_FAILURE); |
106 | } |
156 | } |
107 | |
157 | |
108 | ipv4_ev_watcher.start (ipv4_fd, EVENT_READ); |
158 | ipv4_ev_watcher.start (ipv4_fd, EV_READ); |
109 | } |
159 | } |
110 | |
160 | |
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161 | udpv4_tos = -1; |
111 | udpv4_fd = -1; |
162 | udpv4_fd = -1; |
112 | |
163 | |
113 | if (THISNODE->protocols & PROT_UDPv4 && THISNODE->udp_port) |
164 | if (THISNODE->protocols & PROT_UDPv4 && THISNODE->udp_port) |
114 | { |
165 | { |
115 | udpv4_fd = socket (PF_INET, SOCK_DGRAM, IPPROTO_UDP); |
166 | udpv4_fd = socket (PF_INET, SOCK_DGRAM, IPPROTO_UDP); |
116 | |
167 | |
117 | if (udpv4_fd < 0) |
168 | if (udpv4_fd < 0) |
118 | return -1; |
169 | return -1; |
119 | |
170 | |
120 | fcntl (udpv4_fd, F_SETFL, O_NONBLOCK); |
171 | fcntl (udpv4_fd, F_SETFL, O_NONBLOCK); |
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172 | fcntl (udpv4_fd, F_SETFD, FD_CLOEXEC); |
121 | |
173 | |
122 | // standard daemon practise... |
174 | // standard daemon practise... |
123 | { |
175 | { |
124 | int oval = 1; |
176 | int oval = 1; |
125 | setsockopt (udpv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval); |
177 | setsockopt (udpv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval); |
… | |
… | |
137 | |
189 | |
138 | sockinfo si (THISNODE, PROT_UDPv4); |
190 | sockinfo si (THISNODE, PROT_UDPv4); |
139 | |
191 | |
140 | if (bind (udpv4_fd, si.sav4 (), si.salenv4 ())) |
192 | if (bind (udpv4_fd, si.sav4 (), si.salenv4 ())) |
141 | { |
193 | { |
142 | 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, exiting."), (const char *)si, strerror (errno)); |
143 | exit (EXIT_FAILURE); |
195 | exit (EXIT_FAILURE); |
144 | } |
196 | } |
145 | |
197 | |
146 | udpv4_ev_watcher.start (udpv4_fd, EVENT_READ); |
198 | udpv4_ev_watcher.start (udpv4_fd, EV_READ); |
147 | } |
199 | } |
148 | |
200 | |
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201 | icmpv4_tos = -1; |
149 | icmpv4_fd = -1; |
202 | icmpv4_fd = -1; |
150 | |
203 | |
151 | #if ENABLE_ICMP |
204 | #if ENABLE_ICMP |
152 | if (THISNODE->protocols & PROT_ICMPv4) |
205 | if (THISNODE->protocols & PROT_ICMPv4) |
153 | { |
206 | { |
154 | icmpv4_fd = socket (PF_INET, SOCK_RAW, IPPROTO_ICMP); |
207 | icmpv4_fd = socket (PF_INET, SOCK_RAW, IPPROTO_ICMP); |
155 | |
208 | |
156 | if (icmpv4_fd < 0) |
209 | if (icmpv4_fd < 0) |
157 | return -1; |
210 | return -1; |
158 | |
211 | |
159 | fcntl (icmpv4_fd, F_SETFL, O_NONBLOCK); |
212 | fcntl (icmpv4_fd, F_SETFL, O_NONBLOCK); |
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213 | fcntl (icmpv4_fd, F_SETFD, FD_CLOEXEC); |
160 | |
214 | |
161 | #ifdef ICMP_FILTER |
215 | #ifdef ICMP_FILTER |
162 | { |
216 | { |
163 | icmp_filter oval; |
217 | icmp_filter oval; |
164 | oval.data = 0xffffffff; |
218 | oval.data = 0xffffffff; |
… | |
… | |
173 | // this I really consider a linux bug. I am neither connected |
227 | // this I really consider a linux bug. I am neither connected |
174 | // 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 |
175 | // fragment for me sometimes. |
229 | // fragment for me sometimes. |
176 | { |
230 | { |
177 | int oval = IP_PMTUDISC_DONT; |
231 | int oval = IP_PMTUDISC_DONT; |
178 | setsockopt (udpv4_fd, SOL_IP, IP_MTU_DISCOVER, &oval, sizeof oval); |
232 | setsockopt (icmpv4_fd, SOL_IP, IP_MTU_DISCOVER, &oval, sizeof oval); |
179 | } |
233 | } |
180 | #endif |
234 | #endif |
181 | |
235 | |
182 | sockinfo si (THISNODE, PROT_ICMPv4); |
236 | sockinfo si (THISNODE, PROT_ICMPv4); |
183 | |
237 | |
184 | if (bind (icmpv4_fd, si.sav4 (), si.salenv4 ())) |
238 | if (bind (icmpv4_fd, si.sav4 (), si.salenv4 ())) |
185 | { |
239 | { |
186 | 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, exiting."), (const char *)si, strerror (errno)); |
187 | exit (EXIT_FAILURE); |
241 | exit (EXIT_FAILURE); |
188 | } |
242 | } |
189 | |
243 | |
190 | icmpv4_ev_watcher.start (icmpv4_fd, EVENT_READ); |
244 | icmpv4_ev_watcher.start (icmpv4_fd, EV_READ); |
191 | } |
245 | } |
192 | #endif |
246 | #endif |
193 | |
247 | |
194 | tcpv4_fd = -1; |
248 | tcpv4_fd = -1; |
195 | |
249 | |
… | |
… | |
200 | |
254 | |
201 | if (tcpv4_fd < 0) |
255 | if (tcpv4_fd < 0) |
202 | return -1; |
256 | return -1; |
203 | |
257 | |
204 | fcntl (tcpv4_fd, F_SETFL, O_NONBLOCK); |
258 | fcntl (tcpv4_fd, F_SETFL, O_NONBLOCK); |
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259 | fcntl (tcpv4_fd, F_SETFD, FD_CLOEXEC); |
205 | |
260 | |
206 | // standard daemon practise... |
261 | // standard daemon practise... |
207 | { |
262 | { |
208 | int oval = 1; |
263 | int oval = 1; |
209 | setsockopt (tcpv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval); |
264 | setsockopt (tcpv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval); |
… | |
… | |
211 | |
266 | |
212 | sockinfo si (THISNODE, PROT_TCPv4); |
267 | sockinfo si (THISNODE, PROT_TCPv4); |
213 | |
268 | |
214 | if (bind (tcpv4_fd, si.sav4 (), si.salenv4 ())) |
269 | if (bind (tcpv4_fd, si.sav4 (), si.salenv4 ())) |
215 | { |
270 | { |
216 | slog (L_ERR, _("can't bind tcpv4 on %s: %s"), (const char *)si, strerror (errno)); |
271 | slog (L_ERR, _("can't bind tcpv4 on %s: %s, exiting."), (const char *)si, strerror (errno)); |
217 | exit (EXIT_FAILURE); |
272 | exit (EXIT_FAILURE); |
218 | } |
273 | } |
219 | |
274 | |
220 | if (listen (tcpv4_fd, 5)) |
275 | if (listen (tcpv4_fd, 5)) |
221 | { |
276 | { |
222 | 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, exiting."), (const char *)si, strerror (errno)); |
223 | exit (EXIT_FAILURE); |
278 | exit (EXIT_FAILURE); |
224 | } |
279 | } |
225 | |
280 | |
226 | tcpv4_ev_watcher.start (tcpv4_fd, EVENT_READ); |
281 | tcpv4_ev_watcher.start (tcpv4_fd, EV_READ); |
227 | } |
282 | } |
228 | #endif |
283 | #endif |
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284 | |
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285 | dnsv4_tos = -1; |
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286 | dnsv4_fd = -1; |
229 | |
287 | |
230 | #if ENABLE_DNS |
288 | #if ENABLE_DNS |
231 | if (THISNODE->protocols & PROT_DNSv4) |
289 | if (THISNODE->protocols & PROT_DNSv4) |
232 | { |
290 | { |
233 | 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); |
234 | |
292 | |
235 | dnsv4_fd = socket (PF_INET, SOCK_DGRAM, IPPROTO_UDP); |
293 | dnsv4_fd = socket (PF_INET, SOCK_DGRAM, IPPROTO_UDP); |
236 | |
294 | |
237 | if (dnsv4_fd < 0) |
295 | if (dnsv4_fd < 0) |
238 | return -1; |
296 | return -1; |
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297 | |
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298 | fcntl (dnsv4_fd, F_SETFL, O_NONBLOCK); |
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299 | fcntl (dnsv4_fd, F_SETFD, FD_CLOEXEC); |
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300 | |
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301 | # if defined(SOL_IP) && defined(IP_MTU_DISCOVER) |
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302 | // this I really consider a linux bug. I am neither connected |
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303 | // nor do I fragment myself. Linux still sets DF and doesn't |
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304 | // fragment for me sometimes. |
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305 | { |
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306 | int oval = IP_PMTUDISC_DONT; |
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307 | setsockopt (dnsv4_fd, SOL_IP, IP_MTU_DISCOVER, &oval, sizeof oval); |
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308 | } |
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309 | # endif |
239 | |
310 | |
240 | // standard daemon practise... |
311 | // standard daemon practise... |
241 | { |
312 | { |
242 | int oval = 1; |
313 | int oval = 1; |
243 | setsockopt (dnsv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval); |
314 | setsockopt (dnsv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval); |
… | |
… | |
247 | THISNODE->dns_hostname ? THISNODE->dns_port : 0, |
318 | THISNODE->dns_hostname ? THISNODE->dns_port : 0, |
248 | PROT_DNSv4); |
319 | PROT_DNSv4); |
249 | |
320 | |
250 | if (bind (dnsv4_fd, si.sav4 (), si.salenv4 ())) |
321 | if (bind (dnsv4_fd, si.sav4 (), si.salenv4 ())) |
251 | { |
322 | { |
252 | 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, exiting."), (const char *)si, strerror (errno)); |
253 | exit (EXIT_FAILURE); |
324 | exit (EXIT_FAILURE); |
254 | } |
325 | } |
255 | |
326 | |
256 | dnsv4_ev_watcher.start (dnsv4_fd, EVENT_READ); |
327 | dnsv4_ev_watcher.start (dnsv4_fd, EV_READ); |
257 | } |
328 | } |
258 | #endif |
329 | #endif |
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330 | |
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331 | ///////////////////////////////////////////////////////////////////////////// |
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332 | |
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333 | reconnect_all (); |
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334 | |
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335 | ///////////////////////////////////////////////////////////////////////////// |
259 | |
336 | |
260 | tap = new tap_device (); |
337 | tap = new tap_device (); |
261 | if (!tap) //D this, of course, never catches |
338 | if (!tap) //D this, of course, never catches |
262 | { |
339 | { |
263 | slog (L_ERR, _("cannot create network interface '%s'"), conf.ifname); |
340 | slog (L_ERR, _("cannot create network interface '%s', exiting."), conf.ifname); |
264 | exit (EXIT_FAILURE); |
341 | exit (EXIT_FAILURE); |
265 | } |
342 | } |
266 | |
343 | |
267 | run_script (run_script_cb (this, &vpn::script_if_up), true); |
344 | fcntl (tap->fd, F_SETFD, FD_CLOEXEC); |
268 | |
345 | |
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346 | run_script_cb cb; |
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347 | cb.set<vpn, &vpn::script_if_init> (this); |
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348 | |
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349 | if (tap->if_up () && |
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350 | !run_script (cb, true)) |
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351 | { |
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352 | slog (L_ERR, _("interface initialization command '%s' failed, exiting."), |
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353 | tap->if_up ()); |
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354 | exit (EXIT_FAILURE); |
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355 | } |
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356 | |
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357 | cb.set<vpn, &vpn::script_if_up> (this); |
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358 | if (!run_script (cb, true)) |
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359 | { |
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360 | slog (L_ERR, _("if-up command execution failed, exiting.")); |
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361 | exit (EXIT_FAILURE); |
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362 | } |
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363 | |
269 | tap_ev_watcher.start (tap->fd, EVENT_READ); |
364 | tap_ev_watcher.start (tap->fd, EV_READ); |
270 | |
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271 | reconnect_all (); |
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272 | |
365 | |
273 | return 0; |
366 | return 0; |
274 | } |
367 | } |
275 | |
368 | |
276 | bool |
369 | bool |
277 | 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) |
278 | { |
371 | { |
279 | #if defined(SOL_IP) && defined(IP_TOS) |
372 | set_tos (ipv4_fd, ipv4_tos, tos); |
280 | setsockopt (ipv4_fd, SOL_IP, IP_TOS, &tos, sizeof tos); |
|
|
281 | #endif |
|
|
282 | 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 ()); |
283 | |
374 | |
284 | return true; |
375 | return true; |
285 | } |
376 | } |
286 | |
377 | |
… | |
… | |
309 | |
400 | |
310 | #if ENABLE_ICMP |
401 | #if ENABLE_ICMP |
311 | bool |
402 | bool |
312 | 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) |
313 | { |
404 | { |
314 | #if defined(SOL_IP) && defined(IP_TOS) |
|
|
315 | setsockopt (icmpv4_fd, SOL_IP, IP_TOS, &tos, sizeof tos); |
|
|
316 | #endif |
|
|
317 | |
|
|
318 | pkt->unshift_hdr (4); |
405 | pkt->unshift_hdr (4); |
319 | |
406 | |
320 | icmp_header *hdr = (icmp_header *)&((*pkt)[0]); |
407 | icmp_header *hdr = (icmp_header *)&((*pkt)[0]); |
321 | hdr->type = ::conf.icmp_type; |
408 | hdr->type = ::conf.icmp_type; |
322 | hdr->code = 255; |
409 | hdr->code = 255; |
323 | hdr->checksum = 0; |
410 | hdr->checksum = 0; |
324 | hdr->checksum = ipv4_checksum ((u16 *)hdr, pkt->len); |
411 | hdr->checksum = ipv4_checksum ((u16 *)hdr, pkt->len); |
325 | |
412 | |
|
|
413 | set_tos (icmpv4_fd, icmpv4_tos, tos); |
326 | 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 ()); |
327 | |
415 | |
328 | return true; |
416 | return true; |
329 | } |
417 | } |
330 | #endif |
418 | #endif |
331 | |
419 | |
332 | bool |
420 | bool |
333 | 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) |
334 | { |
422 | { |
335 | #if defined(SOL_IP) && defined(IP_TOS) |
423 | set_tos (udpv4_fd, udpv4_tos, tos); |
336 | setsockopt (udpv4_fd, SOL_IP, IP_TOS, &tos, sizeof tos); |
|
|
337 | #endif |
|
|
338 | 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 ()); |
339 | |
425 | |
340 | return true; |
426 | return true; |
341 | } |
427 | } |
342 | |
428 | |
… | |
… | |
353 | { |
439 | { |
354 | // broadcast, this is ugly, but due to the security policy |
440 | // broadcast, this is ugly, but due to the security policy |
355 | // we have to connect to all hosts... |
441 | // we have to connect to all hosts... |
356 | for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c) |
442 | for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c) |
357 | if ((*c)->conf != THISNODE) |
443 | if ((*c)->conf != THISNODE) |
358 | (*c)->inject_data_packet (pkt, true); |
444 | (*c)->inject_data_packet (pkt); |
359 | } |
445 | } |
360 | } |
446 | } |
361 | |
447 | |
362 | void |
448 | void |
363 | vpn::recv_vpn_packet (vpn_packet *pkt, const sockinfo &rsi) |
449 | vpn::recv_vpn_packet (vpn_packet *pkt, const sockinfo &rsi) |
364 | { |
450 | { |
365 | unsigned int src = pkt->src (); |
451 | unsigned int src = pkt->src (); |
366 | unsigned int dst = pkt->dst (); |
452 | unsigned int dst = pkt->dst (); |
367 | |
453 | |
368 | slog (L_NOISE, _("<<?/%s received possible vpn packet type %d from %d to %d, length %d"), |
454 | slog (L_NOISE, _("<<?/%s received possible vpn packet type %d from %d to %d, length %d."), |
369 | (const char *)rsi, pkt->typ (), pkt->src (), pkt->dst (), pkt->len); |
455 | (const char *)rsi, pkt->typ (), pkt->src (), pkt->dst (), pkt->len); |
370 | |
456 | |
371 | if (src == 0 || src > conns.size () |
457 | if (src == 0 || src > conns.size () |
372 | || dst > conns.size () |
458 | || dst > conns.size () |
373 | || pkt->typ () >= vpn_packet::PT_MAX) |
459 | || pkt->typ () >= vpn_packet::PT_MAX) |
374 | slog (L_WARN, _("(%s): received corrupted packet type %d (src %d, dst %d)"), |
460 | slog (L_WARN, _("(%s): received corrupted packet type %d (src %d, dst %d)."), |
375 | (const char *)rsi, pkt->typ (), pkt->src (), pkt->dst ()); |
461 | (const char *)rsi, pkt->typ (), pkt->src (), pkt->dst ()); |
376 | else if (dst > conns.size ()) |
462 | else if (dst > conns.size ()) |
377 | slog (L_WARN, _("(%s): received corrupted packet type %d (src %d, dst %d)"), |
463 | slog (L_WARN, _("(%s): received corrupted packet type %d (src %d, dst %d)."), |
378 | (const char *)rsi, pkt->typ (), pkt->src (), pkt->dst ()); |
464 | (const char *)rsi, pkt->typ (), pkt->src (), pkt->dst ()); |
379 | else |
465 | else |
380 | { |
466 | { |
381 | connection *c = conns[src - 1]; |
467 | connection *c = conns[src - 1]; |
382 | |
468 | |
383 | if (dst == 0) |
469 | if (dst == 0) |
384 | slog (L_WARN, _("%s(%s): received broadcast (protocol violation)"), |
470 | slog (L_WARN, _("%s(%s): received broadcast (protocol violation)."), |
385 | c->conf->nodename, (const char *)rsi); |
471 | c->conf->nodename, (const char *)rsi); |
386 | else if (dst != THISNODE->id) |
472 | else if (dst != THISNODE->id) |
387 | { |
473 | { |
388 | if (THISNODE->routerprio) |
474 | if (THISNODE->routerprio) |
389 | // the tos setting gets lost here. who cares. |
475 | // the tos setting gets lost here. who cares. |
390 | conns[dst - 1]->inject_vpn_packet (pkt); |
476 | conns[dst - 1]->inject_vpn_packet (pkt); |
391 | else |
477 | else |
392 | slog (L_WARN, |
478 | slog (L_WARN, |
393 | _("%s(%s): forwarding request (=> %s), but we are no router"), |
479 | _("%s(%s): request to forward packet to %s, but we are no router (config mismatch?)."), |
394 | c->conf->nodename, (const char *)rsi, |
480 | c->conf->nodename, (const char *)rsi, |
395 | conns[dst - 1]->conf->nodename); |
481 | conns[dst - 1]->conf->nodename); |
396 | } |
482 | } |
397 | else |
483 | else |
398 | c->recv_vpn_packet (pkt, rsi); |
484 | c->recv_vpn_packet (pkt, rsi); |
… | |
… | |
404 | { |
490 | { |
405 | switch (si.prot) |
491 | switch (si.prot) |
406 | { |
492 | { |
407 | case PROT_IPv4: |
493 | case PROT_IPv4: |
408 | return send_ipv4_packet (pkt, si, tos); |
494 | return send_ipv4_packet (pkt, si, tos); |
|
|
495 | |
409 | case PROT_UDPv4: |
496 | case PROT_UDPv4: |
410 | return send_udpv4_packet (pkt, si, tos); |
497 | return send_udpv4_packet (pkt, si, tos); |
|
|
498 | |
411 | #if ENABLE_TCP |
499 | #if ENABLE_TCP |
412 | case PROT_TCPv4: |
500 | case PROT_TCPv4: |
413 | return send_tcpv4_packet (pkt, si, tos); |
501 | return send_tcpv4_packet (pkt, si, tos); |
414 | #endif |
502 | #endif |
415 | #if ENABLE_ICMP |
503 | #if ENABLE_ICMP |
… | |
… | |
418 | #endif |
506 | #endif |
419 | #if ENABLE_DNS |
507 | #if ENABLE_DNS |
420 | case PROT_DNSv4: |
508 | case PROT_DNSv4: |
421 | return send_dnsv4_packet (pkt, si, tos); |
509 | return send_dnsv4_packet (pkt, si, tos); |
422 | #endif |
510 | #endif |
423 | |
|
|
424 | default: |
511 | default: |
425 | 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); |
426 | } |
513 | } |
427 | |
514 | |
428 | return false; |
515 | return false; |
429 | } |
516 | } |
430 | |
517 | |
431 | void |
518 | inline void |
432 | vpn::ipv4_ev (io_watcher &w, short revents) |
519 | vpn::ipv4_ev (ev::io &w, int revents) |
433 | { |
520 | { |
434 | if (revents & EVENT_READ) |
521 | if (revents & EV_READ) |
435 | { |
522 | { |
436 | vpn_packet *pkt = new vpn_packet; |
523 | vpn_packet *pkt = new vpn_packet; |
437 | struct sockaddr_in sa; |
524 | struct sockaddr_in sa; |
438 | socklen_t sa_len = sizeof (sa); |
525 | socklen_t sa_len = sizeof (sa); |
439 | int len; |
526 | int len; |
… | |
… | |
452 | recv_vpn_packet (pkt, si); |
539 | recv_vpn_packet (pkt, si); |
453 | } |
540 | } |
454 | else |
541 | else |
455 | { |
542 | { |
456 | // probably ECONNRESET or somesuch |
543 | // probably ECONNRESET or somesuch |
457 | slog (L_DEBUG, _("%s: %s"), (const char *)si, strerror (errno)); |
544 | slog (L_DEBUG, _("%s: %s."), (const char *)si, strerror (errno)); |
458 | } |
545 | } |
459 | |
546 | |
460 | delete pkt; |
547 | delete pkt; |
461 | } |
548 | } |
462 | else |
549 | else |
463 | { |
550 | { |
464 | slog (L_ERR, |
551 | slog (L_ERR, |
465 | _("FATAL: unknown revents %08x in socket, terminating\n"), |
552 | _("FATAL: unknown revents %08x in socket, exiting.\n"), |
466 | revents); |
553 | revents); |
467 | exit (EXIT_FAILURE); |
554 | exit (EXIT_FAILURE); |
468 | } |
555 | } |
469 | } |
556 | } |
470 | |
557 | |
471 | #if ENABLE_ICMP |
558 | #if ENABLE_ICMP |
472 | void |
559 | inline void |
473 | vpn::icmpv4_ev (io_watcher &w, short revents) |
560 | vpn::icmpv4_ev (ev::io &w, int revents) |
474 | { |
561 | { |
475 | if (revents & EVENT_READ) |
562 | if (revents & EV_READ) |
476 | { |
563 | { |
477 | vpn_packet *pkt = new vpn_packet; |
564 | vpn_packet *pkt = new vpn_packet; |
478 | struct sockaddr_in sa; |
565 | struct sockaddr_in sa; |
479 | socklen_t sa_len = sizeof (sa); |
566 | socklen_t sa_len = sizeof (sa); |
480 | int len; |
567 | int len; |
… | |
… | |
500 | } |
587 | } |
501 | } |
588 | } |
502 | else |
589 | else |
503 | { |
590 | { |
504 | // probably ECONNRESET or somesuch |
591 | // probably ECONNRESET or somesuch |
505 | slog (L_DEBUG, _("%s: %s"), (const char *)si, strerror (errno)); |
592 | slog (L_DEBUG, _("%s: %s."), (const char *)si, strerror (errno)); |
506 | } |
593 | } |
507 | |
594 | |
508 | delete pkt; |
595 | delete pkt; |
509 | } |
596 | } |
510 | else |
597 | else |
511 | { |
598 | { |
512 | slog (L_ERR, |
599 | slog (L_ERR, |
513 | _("FATAL: unknown revents %08x in socket, terminating\n"), |
600 | _("FATAL: unknown revents %08x in socket, exiting.\n"), |
514 | revents); |
601 | revents); |
515 | exit (EXIT_FAILURE); |
602 | exit (EXIT_FAILURE); |
516 | } |
603 | } |
517 | } |
604 | } |
518 | #endif |
605 | #endif |
519 | |
606 | |
520 | void |
607 | inline void |
521 | vpn::udpv4_ev (io_watcher &w, short revents) |
608 | vpn::udpv4_ev (ev::io &w, int revents) |
522 | { |
609 | { |
523 | if (revents & EVENT_READ) |
610 | if (revents & EV_READ) |
524 | { |
611 | { |
525 | vpn_packet *pkt = new vpn_packet; |
612 | vpn_packet *pkt = new vpn_packet; |
526 | struct sockaddr_in sa; |
613 | struct sockaddr_in sa; |
527 | socklen_t sa_len = sizeof (sa); |
614 | socklen_t sa_len = sizeof (sa); |
528 | int len; |
615 | int len; |
… | |
… | |
538 | recv_vpn_packet (pkt, si); |
625 | recv_vpn_packet (pkt, si); |
539 | } |
626 | } |
540 | else |
627 | else |
541 | { |
628 | { |
542 | // probably ECONNRESET or somesuch |
629 | // probably ECONNRESET or somesuch |
543 | slog (L_DEBUG, _("%s: fd %d, %s"), (const char *)si, w.fd, strerror (errno)); |
630 | slog (L_DEBUG, _("%s: fd %d, %s."), (const char *)si, w.fd, strerror (errno)); |
544 | } |
631 | } |
545 | |
632 | |
546 | delete pkt; |
633 | delete pkt; |
547 | } |
634 | } |
548 | else |
635 | else |
549 | { |
636 | { |
550 | slog (L_ERR, |
637 | slog (L_ERR, |
551 | _("FATAL: unknown revents %08x in socket, terminating\n"), |
638 | _("FATAL: unknown revents %08x in socket, exiting.\n"), |
552 | revents); |
639 | revents); |
553 | exit (EXIT_FAILURE); |
640 | exit (EXIT_FAILURE); |
554 | } |
641 | } |
555 | } |
642 | } |
556 | |
643 | |
557 | void |
644 | inline void |
558 | vpn::tap_ev (io_watcher &w, short revents) |
645 | vpn::tap_ev (ev::io &w, int revents) |
559 | { |
646 | { |
560 | if (revents & EVENT_READ) |
647 | if (revents & EV_READ) |
561 | { |
648 | { |
562 | /* process data */ |
649 | /* process data */ |
563 | tap_packet *pkt; |
650 | tap_packet *pkt; |
564 | |
651 | |
565 | pkt = tap->recv (); |
652 | pkt = tap->recv (); |
… | |
… | |
594 | } |
681 | } |
595 | else |
682 | else |
596 | abort (); |
683 | abort (); |
597 | } |
684 | } |
598 | |
685 | |
599 | void |
686 | inline void |
600 | vpn::event_cb (time_watcher &w) |
687 | vpn::event_cb (ev::timer &w, int) |
601 | { |
688 | { |
602 | if (events) |
689 | if (events) |
603 | { |
690 | { |
604 | if (events & EVENT_SHUTDOWN) |
691 | if (events & EVENT_SHUTDOWN) |
605 | { |
692 | { |
606 | slog (L_INFO, _("preparing shutdown...")); |
693 | slog (L_INFO, _("preparing shutdown...")); |
607 | |
694 | |
608 | shutdown_all (); |
695 | shutdown_all (); |
609 | remove_pid (conf.pidfilename); |
696 | remove_pid (conf.pidfilename); |
610 | slog (L_INFO, _("terminating")); |
697 | slog (L_INFO, _("exiting.")); |
611 | exit (EXIT_SUCCESS); |
698 | exit (EXIT_SUCCESS); |
612 | } |
699 | } |
613 | |
700 | |
614 | if (events & EVENT_RECONNECT) |
701 | if (events & EVENT_RECONNECT) |
615 | { |
702 | { |
616 | slog (L_INFO, _("forced reconnect")); |
703 | slog (L_INFO, _("forced reconnect.")); |
617 | |
704 | |
618 | reconnect_all (); |
705 | reconnect_all (); |
619 | } |
706 | } |
620 | |
707 | |
621 | events = 0; |
708 | events = 0; |
… | |
… | |
637 | |
724 | |
638 | conns.clear (); |
725 | conns.clear (); |
639 | |
726 | |
640 | connection_init (); |
727 | connection_init (); |
641 | |
728 | |
642 | for (configuration::node_vector::iterator i = conf.nodes.begin (); |
729 | for (configuration::node_vector::iterator i = conf.nodes.begin (); i != conf.nodes.end (); ++i) |
643 | i != conf.nodes.end (); ++i) |
730 | conns.push_back (new connection (this, *i)); |
644 | { |
731 | |
645 | connection *conn = new connection (this, *i); |
732 | for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c) |
646 | conns.push_back (conn); |
|
|
647 | conn->establish_connection (); |
733 | (*c)->establish_connection (); |
648 | } |
|
|
649 | } |
734 | } |
650 | |
735 | |
651 | connection *vpn::find_router () |
736 | bool vpn::can_direct (conf_node *src, conf_node *dst) const |
652 | { |
737 | { |
653 | u32 prio = 1; |
738 | return src != dst |
|
|
739 | && src->may_direct (dst) |
|
|
740 | && dst->may_direct (src) |
|
|
741 | && (((src->protocols & dst->protocols) && src->connectmode == conf_node::C_ALWAYS) |
|
|
742 | || (src->protocols & dst->connectable_protocols ())); |
|
|
743 | } |
|
|
744 | |
|
|
745 | // only works for indirect and routed connections: find a router |
|
|
746 | // from THISNODE to dst |
|
|
747 | connection *vpn::find_router_for (const connection *dst) |
|
|
748 | { |
654 | connection *router = 0; |
749 | connection *router = 0; |
655 | |
750 | |
|
|
751 | // first try to find a router with a direct connection |
|
|
752 | { |
|
|
753 | u32 prio = 1; |
|
|
754 | |
|
|
755 | for (conns_vector::iterator i = conns.begin (); i != conns.end (); ++i) |
|
|
756 | { |
|
|
757 | connection *c = *i; |
|
|
758 | |
|
|
759 | if (c->conf->routerprio > prio |
|
|
760 | && c->conf != THISNODE |
|
|
761 | && c != dst |
|
|
762 | && can_direct (c->conf, dst->conf)) |
|
|
763 | { |
|
|
764 | if (c->ictx && c->octx) |
|
|
765 | { |
|
|
766 | prio = c->conf->routerprio; |
|
|
767 | router = c; |
|
|
768 | } |
|
|
769 | else |
|
|
770 | c->establish_connection (); |
|
|
771 | } |
|
|
772 | } |
|
|
773 | } |
|
|
774 | |
|
|
775 | if (router) |
|
|
776 | return router; |
|
|
777 | |
|
|
778 | // second try find the router with the highest priority higher than ours |
|
|
779 | { |
|
|
780 | u32 prio = 1; |
|
|
781 | |
|
|
782 | for (conns_vector::iterator i = conns.begin (); i != conns.end (); ++i) |
|
|
783 | { |
|
|
784 | connection *c = *i; |
|
|
785 | |
|
|
786 | if (c->conf->routerprio > prio |
|
|
787 | && c->conf->routerprio > THISNODE->routerprio |
|
|
788 | && c != dst |
|
|
789 | && c->conf != THISNODE) |
|
|
790 | { |
|
|
791 | if (c->ictx && c->octx) |
|
|
792 | { |
|
|
793 | prio = c->conf->routerprio; |
|
|
794 | router = c; |
|
|
795 | } |
|
|
796 | else |
|
|
797 | c->establish_connection (); |
|
|
798 | } |
|
|
799 | } |
|
|
800 | } |
|
|
801 | return router; |
|
|
802 | } |
|
|
803 | |
|
|
804 | void vpn::connection_established (connection *c) |
|
|
805 | { |
656 | for (conns_vector::iterator i = conns.begin (); i != conns.end (); ++i) |
806 | for (conns_vector::iterator i = conns.begin (); i != conns.end (); ++i) |
657 | { |
807 | { |
658 | connection *c = *i; |
808 | connection *o = *i; |
659 | |
809 | |
660 | if (c->conf->routerprio > prio |
810 | if (!o->is_direct |
661 | && c->connectmode == conf_node::C_ALWAYS // so we don't drop the connection if in use |
811 | && o->si.valid () |
662 | && c->ictx && c->octx |
812 | && c->si != o->si |
663 | && c->conf != THISNODE) // redundant, since ictx==octx==0 always on thisnode |
813 | && c == find_router_for (o)) |
664 | { |
|
|
665 | prio = c->conf->routerprio; |
|
|
666 | router = c; |
|
|
667 | } |
814 | { |
|
|
815 | slog (L_DEBUG, _("%s: can now route packets via %s, re-keying connection."), |
|
|
816 | o->conf->nodename, c->conf->nodename); |
|
|
817 | o->rekey (); |
|
|
818 | } |
668 | } |
819 | } |
669 | |
|
|
670 | return router; |
|
|
671 | } |
820 | } |
672 | |
821 | |
673 | void vpn::send_connect_request (int id) |
822 | void vpn::send_connect_request (connection *c) |
674 | { |
823 | { |
675 | connection *c = find_router (); |
824 | connection *r = find_router_for (c); |
676 | |
825 | |
677 | if (c) |
826 | if (r) |
|
|
827 | { |
|
|
828 | slog (L_TRACE, _("%s: no way to connect, sending mediated connection request via %s."), |
|
|
829 | c->conf->nodename, r->conf->nodename); |
678 | c->send_connect_request (id); |
830 | r->send_connect_request (c->conf->id); |
|
|
831 | } |
679 | else |
832 | else |
680 | // no router found, aggressively connect to all routers |
833 | slog (L_DEBUG, _("%s: no way to connect and no router found: unable to connect."), |
681 | for (conns_vector::iterator i = conns.begin (); i != conns.end (); ++i) |
834 | c->conf->nodename); |
682 | if ((*i)->conf->routerprio && (*i)->conf != THISNODE) |
|
|
683 | (*i)->establish_connection (); |
|
|
684 | } |
835 | } |
685 | |
836 | |
686 | void |
837 | void |
687 | connection::dump_status () |
838 | connection::dump_status () |
688 | { |
839 | { |
689 | slog (L_NOTICE, _("node %s (id %d)"), conf->nodename, conf->id); |
840 | slog (L_NOTICE, _("node %s (id %d)"), conf->nodename, conf->id); |
690 | slog (L_NOTICE, _(" connectmode %d (%d) / sockaddr %s / minor %d"), |
841 | slog (L_NOTICE, _(" connectmode %d (%d) / sockaddr %s / minor %d"), |
691 | connectmode, conf->connectmode, (const char *)si, (int)prot_minor); |
842 | connectmode, conf->connectmode, (const char *)si, (int)prot_minor); |
692 | slog (L_NOTICE, _(" ictx/octx %08lx/%08lx / oseqno %d / retry_cnt %d"), |
843 | slog (L_NOTICE, _(" ictx/octx %08lx/%08lx / oseqno %d / retry_cnt %d"), |
693 | (long)ictx, (long)octx, (int)oseqno, (int)retry_cnt); |
844 | (long)ictx, (long)octx, (int)oseqno, (int)retry_cnt); |
694 | slog (L_NOTICE, _(" establish_conn %ld / rekey %ld / keepalive %ld"), |
|
|
695 | (long)(establish_connection.at), (long)(rekey.at), (long)(keepalive.at)); |
|
|
696 | } |
845 | } |
697 | |
846 | |
698 | void |
847 | void |
699 | vpn::dump_status () |
848 | vpn::dump_status () |
700 | { |
849 | { |
701 | slog (L_NOTICE, _("BEGIN status dump (%ld)"), (long)NOW); |
850 | slog (L_NOTICE, _("BEGIN status dump (%ld)"), (long)ev_now ()); |
702 | |
851 | |
703 | for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c) |
852 | for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c) |
704 | (*c)->dump_status (); |
853 | (*c)->dump_status (); |
705 | |
854 | |
706 | slog (L_NOTICE, _("END status dump")); |
855 | slog (L_NOTICE, _("END status dump")); |
707 | } |
856 | } |
708 | |
857 | |
709 | vpn::vpn (void) |
858 | vpn::vpn (void) |
|
|
859 | { |
710 | : event (this, &vpn::event_cb) |
860 | event .set<vpn, &vpn::event_cb > (this); |
711 | , udpv4_ev_watcher (this, &vpn::udpv4_ev) |
861 | udpv4_ev_watcher .set<vpn, &vpn::udpv4_ev > (this); |
712 | , ipv4_ev_watcher (this, &vpn::ipv4_ev) |
862 | ipv4_ev_watcher .set<vpn, &vpn::ipv4_ev > (this); |
713 | #if ENABLE_TCP |
863 | #if ENABLE_TCP |
714 | , tcpv4_ev_watcher (this, &vpn::tcpv4_ev) |
864 | tcpv4_ev_watcher .set<vpn, &vpn::tcpv4_ev > (this); |
715 | #endif |
865 | #endif |
716 | #if ENABLE_ICMP |
866 | #if ENABLE_ICMP |
717 | , icmpv4_ev_watcher(this, &vpn::icmpv4_ev) |
867 | icmpv4_ev_watcher.set<vpn, &vpn::icmpv4_ev> (this); |
718 | #endif |
868 | #endif |
719 | #if ENABLE_DNS |
869 | #if ENABLE_DNS |
720 | , dnsv4_ev_watcher (this, &vpn::dnsv4_ev) |
870 | dnsv4_ev_watcher .set<vpn, &vpn::dnsv4_ev > (this); |
721 | #endif |
871 | #endif |
722 | , tap_ev_watcher (this, &vpn::tap_ev) |
872 | tap_ev_watcher .set<vpn, &vpn::tap_ev > (this); |
723 | { |
|
|
724 | } |
873 | } |
725 | |
874 | |
726 | vpn::~vpn () |
875 | vpn::~vpn () |
727 | { |
876 | { |
728 | } |
877 | } |