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) 2003-2007 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 |
8 | it under the terms of the GNU General Public License as published by |
8 | it under the terms of the GNU General Public License as published by |
… | |
… | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
15 | GNU General Public License for more details. |
15 | GNU General 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 |
18 | along with gvpe; if not, write to the Free Software |
18 | along with gvpe; if not, write to the Free Software |
19 | Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
19 | Foundation, Inc. 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
20 | */ |
20 | */ |
21 | |
21 | |
22 | #include "config.h" |
22 | #include "config.h" |
23 | |
23 | |
24 | #include <list> |
24 | #include <list> |
… | |
… | |
46 | |
46 | |
47 | vpn network; // THE vpn (bad design...) |
47 | vpn network; // THE vpn (bad design...) |
48 | |
48 | |
49 | ///////////////////////////////////////////////////////////////////////////// |
49 | ///////////////////////////////////////////////////////////////////////////// |
50 | |
50 | |
51 | const char *vpn::script_if_up () |
51 | static void inline |
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52 | set_tos (int fd, int &tos_prev, int tos) |
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53 | { |
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54 | #if defined(SOL_IP) && defined(IP_TOS) |
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55 | if (tos_prev == tos) |
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56 | return; |
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57 | |
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58 | tos_prev = tos; |
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59 | setsockopt (fd, SOL_IP, IP_TOS, &tos, sizeof tos); |
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60 | #endif |
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61 | } |
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62 | |
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63 | void |
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64 | vpn::script_init_env () |
52 | { |
65 | { |
53 | // the tunnel device mtu should be the physical mtu - overhead |
66 | // the tunnel device mtu should be the physical mtu - overhead |
54 | // the tricky part is rounding to the cipher key blocksize |
67 | // the tricky part is rounding to the cipher key blocksize |
55 | int mtu = conf.mtu - ETH_OVERHEAD - VPE_OVERHEAD - MAX_OVERHEAD; |
68 | int mtu = conf.mtu - ETH_OVERHEAD - VPE_OVERHEAD - MAX_OVERHEAD; |
56 | mtu += ETH_OVERHEAD - 6 - 6; // now we have the data portion |
69 | mtu += ETH_OVERHEAD - 6 - 6; // now we have the data portion |
57 | mtu -= mtu % EVP_CIPHER_block_size (CIPHER); // round |
70 | mtu -= mtu % EVP_CIPHER_block_size (CIPHER); // round |
58 | mtu -= ETH_OVERHEAD - 6 - 6; // and get interface mtu again |
71 | mtu -= ETH_OVERHEAD - 6 - 6; // and get interface mtu again |
59 | |
72 | |
60 | char *env; |
73 | char *env; |
61 | asprintf (&env, "CONFBASE=%s", confbase); putenv (env); |
74 | 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); |
75 | asprintf (&env, "IFNAME=%s", tap->interface ()); putenv (env); |
65 | asprintf (&env, "IFTYPE=%s", IFTYPE); putenv (env); |
76 | asprintf (&env, "IFTYPE=%s", IFTYPE); putenv (env); |
66 | asprintf (&env, "IFSUBTYPE=%s", IFSUBTYPE); putenv (env); |
77 | asprintf (&env, "IFSUBTYPE=%s", IFSUBTYPE); putenv (env); |
67 | asprintf (&env, "MTU=%d", mtu); putenv (env); |
78 | asprintf (&env, "MTU=%d", mtu); putenv (env); |
68 | asprintf (&env, "MAC=%02x:%02x:%02x:%02x:%02x:%02x", |
79 | asprintf (&env, "NODES=%d", conns.size ()); putenv (env); |
69 | 0xfe, 0xfd, 0x80, 0x00, THISNODE->id >> 8, |
80 | asprintf (&env, "NODEID=%d", THISNODE->id); putenv (env); |
70 | THISNODE->id & 0xff); |
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71 | putenv (env); |
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72 | |
81 | |
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82 | conns [THISNODE->id - 1]->script_init_env (""); |
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83 | |
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84 | for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c) |
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85 | { |
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86 | char ext[16]; |
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87 | snprintf (ext, 16, "_%d", (*c)->conf->id); |
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88 | (*c)->script_init_env (ext); |
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89 | } |
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90 | } |
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91 | |
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92 | inline const char * |
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93 | vpn::script_if_init () |
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94 | { |
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95 | script_init_env (); |
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96 | |
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97 | return tap->if_up (); |
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98 | } |
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99 | |
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100 | inline const char * |
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101 | vpn::script_if_up () |
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102 | { |
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103 | script_init_env (); |
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104 | |
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105 | char *filename; |
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106 | asprintf (&filename, |
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107 | "%s/%s", |
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108 | confbase, |
73 | return ::conf.script_if_up ? ::conf.script_if_up : "if-up"; |
109 | ::conf.script_if_up ? ::conf.script_if_up : "if-up"); |
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110 | |
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111 | return filename; |
74 | } |
112 | } |
75 | |
113 | |
76 | int |
114 | int |
77 | vpn::setup () |
115 | vpn::setup () |
78 | { |
116 | { |
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117 | ipv4_tos = -1; |
79 | ipv4_fd = -1; |
118 | ipv4_fd = -1; |
80 | |
119 | |
81 | if (THISNODE->protocols & PROT_IPv4 && ::conf.ip_proto) |
120 | if (THISNODE->protocols & PROT_IPv4 && ::conf.ip_proto) |
82 | { |
121 | { |
83 | ipv4_fd = socket (PF_INET, SOCK_RAW, ::conf.ip_proto); |
122 | ipv4_fd = socket (PF_INET, SOCK_RAW, ::conf.ip_proto); |
84 | |
123 | |
85 | if (ipv4_fd < 0) |
124 | if (ipv4_fd < 0) |
86 | return -1; |
125 | return -1; |
87 | |
126 | |
88 | fcntl (ipv4_fd, F_SETFL, O_NONBLOCK); |
127 | fcntl (ipv4_fd, F_SETFL, O_NONBLOCK); |
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128 | fcntl (ipv4_fd, F_SETFD, FD_CLOEXEC); |
89 | |
129 | |
90 | #if defined(SOL_IP) && defined(IP_MTU_DISCOVER) |
130 | #if defined(SOL_IP) && defined(IP_MTU_DISCOVER) |
91 | // this I really consider a linux bug. I am neither connected |
131 | // this I really consider a linux bug. I am neither connected |
92 | // nor do I fragment myself. Linux still sets DF and doesn't |
132 | // nor do I fragment myself. Linux still sets DF and doesn't |
93 | // fragment for me sometimes. |
133 | // fragment for me sometimes. |
… | |
… | |
103 | { |
143 | { |
104 | slog (L_ERR, _("can't bind ipv4 socket on %s: %s"), (const char *)si, strerror (errno)); |
144 | slog (L_ERR, _("can't bind ipv4 socket on %s: %s"), (const char *)si, strerror (errno)); |
105 | exit (EXIT_FAILURE); |
145 | exit (EXIT_FAILURE); |
106 | } |
146 | } |
107 | |
147 | |
108 | ipv4_ev_watcher.start (ipv4_fd, EVENT_READ); |
148 | ipv4_ev_watcher.start (ipv4_fd, EV_READ); |
109 | } |
149 | } |
110 | |
150 | |
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151 | udpv4_tos = -1; |
111 | udpv4_fd = -1; |
152 | udpv4_fd = -1; |
112 | |
153 | |
113 | if (THISNODE->protocols & PROT_UDPv4 && THISNODE->udp_port) |
154 | if (THISNODE->protocols & PROT_UDPv4 && THISNODE->udp_port) |
114 | { |
155 | { |
115 | udpv4_fd = socket (PF_INET, SOCK_DGRAM, IPPROTO_UDP); |
156 | udpv4_fd = socket (PF_INET, SOCK_DGRAM, IPPROTO_UDP); |
116 | |
157 | |
117 | if (udpv4_fd < 0) |
158 | if (udpv4_fd < 0) |
118 | return -1; |
159 | return -1; |
119 | |
160 | |
120 | fcntl (udpv4_fd, F_SETFL, O_NONBLOCK); |
161 | fcntl (udpv4_fd, F_SETFL, O_NONBLOCK); |
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162 | fcntl (udpv4_fd, F_SETFD, FD_CLOEXEC); |
121 | |
163 | |
122 | // standard daemon practise... |
164 | // standard daemon practise... |
123 | { |
165 | { |
124 | int oval = 1; |
166 | int oval = 1; |
125 | setsockopt (udpv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval); |
167 | setsockopt (udpv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval); |
… | |
… | |
141 | { |
183 | { |
142 | slog (L_ERR, _("can't bind udpv4 on %s: %s"), (const char *)si, strerror (errno)); |
184 | slog (L_ERR, _("can't bind udpv4 on %s: %s"), (const char *)si, strerror (errno)); |
143 | exit (EXIT_FAILURE); |
185 | exit (EXIT_FAILURE); |
144 | } |
186 | } |
145 | |
187 | |
146 | udpv4_ev_watcher.start (udpv4_fd, EVENT_READ); |
188 | udpv4_ev_watcher.start (udpv4_fd, EV_READ); |
147 | } |
189 | } |
148 | |
190 | |
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191 | icmpv4_tos = -1; |
149 | icmpv4_fd = -1; |
192 | icmpv4_fd = -1; |
150 | |
193 | |
151 | #if ENABLE_ICMP |
194 | #if ENABLE_ICMP |
152 | if (THISNODE->protocols & PROT_ICMPv4) |
195 | if (THISNODE->protocols & PROT_ICMPv4) |
153 | { |
196 | { |
154 | icmpv4_fd = socket (PF_INET, SOCK_RAW, IPPROTO_ICMP); |
197 | icmpv4_fd = socket (PF_INET, SOCK_RAW, IPPROTO_ICMP); |
155 | |
198 | |
156 | if (icmpv4_fd < 0) |
199 | if (icmpv4_fd < 0) |
157 | return -1; |
200 | return -1; |
158 | |
201 | |
159 | fcntl (icmpv4_fd, F_SETFL, O_NONBLOCK); |
202 | fcntl (icmpv4_fd, F_SETFL, O_NONBLOCK); |
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203 | fcntl (icmpv4_fd, F_SETFD, FD_CLOEXEC); |
160 | |
204 | |
161 | #ifdef ICMP_FILTER |
205 | #ifdef ICMP_FILTER |
162 | { |
206 | { |
163 | icmp_filter oval; |
207 | icmp_filter oval; |
164 | oval.data = 0xffffffff; |
208 | oval.data = 0xffffffff; |
… | |
… | |
173 | // this I really consider a linux bug. I am neither connected |
217 | // this I really consider a linux bug. I am neither connected |
174 | // nor do I fragment myself. Linux still sets DF and doesn't |
218 | // nor do I fragment myself. Linux still sets DF and doesn't |
175 | // fragment for me sometimes. |
219 | // fragment for me sometimes. |
176 | { |
220 | { |
177 | int oval = IP_PMTUDISC_DONT; |
221 | int oval = IP_PMTUDISC_DONT; |
178 | setsockopt (udpv4_fd, SOL_IP, IP_MTU_DISCOVER, &oval, sizeof oval); |
222 | setsockopt (icmpv4_fd, SOL_IP, IP_MTU_DISCOVER, &oval, sizeof oval); |
179 | } |
223 | } |
180 | #endif |
224 | #endif |
181 | |
225 | |
182 | sockinfo si (THISNODE, PROT_ICMPv4); |
226 | sockinfo si (THISNODE, PROT_ICMPv4); |
183 | |
227 | |
… | |
… | |
185 | { |
229 | { |
186 | slog (L_ERR, _("can't bind icmpv4 on %s: %s"), (const char *)si, strerror (errno)); |
230 | slog (L_ERR, _("can't bind icmpv4 on %s: %s"), (const char *)si, strerror (errno)); |
187 | exit (EXIT_FAILURE); |
231 | exit (EXIT_FAILURE); |
188 | } |
232 | } |
189 | |
233 | |
190 | icmpv4_ev_watcher.start (icmpv4_fd, EVENT_READ); |
234 | icmpv4_ev_watcher.start (icmpv4_fd, EV_READ); |
191 | } |
235 | } |
192 | #endif |
236 | #endif |
193 | |
237 | |
194 | tcpv4_fd = -1; |
238 | tcpv4_fd = -1; |
195 | |
239 | |
… | |
… | |
200 | |
244 | |
201 | if (tcpv4_fd < 0) |
245 | if (tcpv4_fd < 0) |
202 | return -1; |
246 | return -1; |
203 | |
247 | |
204 | fcntl (tcpv4_fd, F_SETFL, O_NONBLOCK); |
248 | fcntl (tcpv4_fd, F_SETFL, O_NONBLOCK); |
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249 | fcntl (tcpv4_fd, F_SETFD, FD_CLOEXEC); |
205 | |
250 | |
206 | // standard daemon practise... |
251 | // standard daemon practise... |
207 | { |
252 | { |
208 | int oval = 1; |
253 | int oval = 1; |
209 | setsockopt (tcpv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval); |
254 | setsockopt (tcpv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval); |
… | |
… | |
221 | { |
266 | { |
222 | slog (L_ERR, _("can't listen tcpv4 on %s: %s"), (const char *)si, strerror (errno)); |
267 | slog (L_ERR, _("can't listen tcpv4 on %s: %s"), (const char *)si, strerror (errno)); |
223 | exit (EXIT_FAILURE); |
268 | exit (EXIT_FAILURE); |
224 | } |
269 | } |
225 | |
270 | |
226 | tcpv4_ev_watcher.start (tcpv4_fd, EVENT_READ); |
271 | tcpv4_ev_watcher.start (tcpv4_fd, EV_READ); |
227 | } |
272 | } |
228 | #endif |
273 | #endif |
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274 | |
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275 | dnsv4_tos = -1; |
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276 | dnsv4_fd = -1; |
229 | |
277 | |
230 | #if ENABLE_DNS |
278 | #if ENABLE_DNS |
231 | if (THISNODE->protocols & PROT_DNSv4) |
279 | if (THISNODE->protocols & PROT_DNSv4) |
232 | { |
280 | { |
233 | dns_forwarder.set (::conf.dns_forw_host, ::conf.dns_forw_port, PROT_DNSv4); |
281 | dns_forwarder.set (::conf.dns_forw_host, ::conf.dns_forw_port, PROT_DNSv4); |
234 | |
282 | |
235 | dnsv4_fd = socket (PF_INET, SOCK_DGRAM, IPPROTO_UDP); |
283 | dnsv4_fd = socket (PF_INET, SOCK_DGRAM, IPPROTO_UDP); |
236 | |
284 | |
237 | if (dnsv4_fd < 0) |
285 | if (dnsv4_fd < 0) |
238 | return -1; |
286 | return -1; |
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287 | |
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288 | fcntl (dnsv4_fd, F_SETFL, O_NONBLOCK); |
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289 | fcntl (dnsv4_fd, F_SETFD, FD_CLOEXEC); |
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290 | |
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291 | # if defined(SOL_IP) && defined(IP_MTU_DISCOVER) |
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292 | // this I really consider a linux bug. I am neither connected |
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293 | // nor do I fragment myself. Linux still sets DF and doesn't |
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294 | // fragment for me sometimes. |
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295 | { |
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296 | int oval = IP_PMTUDISC_DONT; |
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297 | setsockopt (dnsv4_fd, SOL_IP, IP_MTU_DISCOVER, &oval, sizeof oval); |
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298 | } |
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299 | # endif |
239 | |
300 | |
240 | // standard daemon practise... |
301 | // standard daemon practise... |
241 | { |
302 | { |
242 | int oval = 1; |
303 | int oval = 1; |
243 | setsockopt (dnsv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval); |
304 | setsockopt (dnsv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval); |
… | |
… | |
251 | { |
312 | { |
252 | slog (L_ERR, _("can't bind dnsv4 on %s: %s"), (const char *)si, strerror (errno)); |
313 | slog (L_ERR, _("can't bind dnsv4 on %s: %s"), (const char *)si, strerror (errno)); |
253 | exit (EXIT_FAILURE); |
314 | exit (EXIT_FAILURE); |
254 | } |
315 | } |
255 | |
316 | |
256 | dnsv4_ev_watcher.start (dnsv4_fd, EVENT_READ); |
317 | dnsv4_ev_watcher.start (dnsv4_fd, EV_READ); |
257 | } |
318 | } |
258 | #endif |
319 | #endif |
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320 | |
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321 | ///////////////////////////////////////////////////////////////////////////// |
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322 | |
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323 | reconnect_all (); |
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324 | |
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325 | ///////////////////////////////////////////////////////////////////////////// |
259 | |
326 | |
260 | tap = new tap_device (); |
327 | tap = new tap_device (); |
261 | if (!tap) //D this, of course, never catches |
328 | if (!tap) //D this, of course, never catches |
262 | { |
329 | { |
263 | slog (L_ERR, _("cannot create network interface '%s'"), conf.ifname); |
330 | slog (L_ERR, _("cannot create network interface '%s'"), conf.ifname); |
264 | exit (EXIT_FAILURE); |
331 | exit (EXIT_FAILURE); |
265 | } |
332 | } |
266 | |
333 | |
267 | run_script (run_script_cb (this, &vpn::script_if_up), true); |
334 | fcntl (tap->fd, F_SETFD, FD_CLOEXEC); |
268 | |
335 | |
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336 | run_script_cb cb; |
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337 | cb.set<vpn, &vpn::script_if_init> (this); |
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338 | |
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339 | if (tap->if_up () && |
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340 | !run_script (cb, true)) |
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341 | { |
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342 | slog (L_ERR, _("interface initialization command '%s' failed, exiting."), |
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343 | tap->if_up ()); |
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344 | exit (EXIT_FAILURE); |
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345 | } |
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346 | |
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347 | cb.set<vpn, &vpn::script_if_up> (this); |
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348 | if (!run_script (cb, true)) |
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349 | { |
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350 | slog (L_ERR, _("if-up command execution failed, exiting.")); |
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351 | exit (EXIT_FAILURE); |
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352 | } |
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353 | |
269 | tap_ev_watcher.start (tap->fd, EVENT_READ); |
354 | tap_ev_watcher.start (tap->fd, EV_READ); |
270 | |
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271 | reconnect_all (); |
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272 | |
355 | |
273 | return 0; |
356 | return 0; |
274 | } |
357 | } |
275 | |
358 | |
276 | bool |
359 | bool |
277 | vpn::send_ipv4_packet (vpn_packet *pkt, const sockinfo &si, int tos) |
360 | vpn::send_ipv4_packet (vpn_packet *pkt, const sockinfo &si, int tos) |
278 | { |
361 | { |
279 | #if defined(SOL_IP) && defined(IP_TOS) |
362 | set_tos (ipv4_fd, ipv4_tos, tos); |
280 | setsockopt (ipv4_fd, SOL_IP, IP_TOS, &tos, sizeof tos); |
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281 | #endif |
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282 | sendto (ipv4_fd, &((*pkt)[0]), pkt->len, 0, si.sav4 (), si.salenv4 ()); |
363 | sendto (ipv4_fd, &((*pkt)[0]), pkt->len, 0, si.sav4 (), si.salenv4 ()); |
283 | |
364 | |
284 | return true; |
365 | return true; |
285 | } |
366 | } |
286 | |
367 | |
… | |
… | |
309 | |
390 | |
310 | #if ENABLE_ICMP |
391 | #if ENABLE_ICMP |
311 | bool |
392 | bool |
312 | vpn::send_icmpv4_packet (vpn_packet *pkt, const sockinfo &si, int tos) |
393 | vpn::send_icmpv4_packet (vpn_packet *pkt, const sockinfo &si, int tos) |
313 | { |
394 | { |
314 | #if defined(SOL_IP) && defined(IP_TOS) |
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315 | setsockopt (icmpv4_fd, SOL_IP, IP_TOS, &tos, sizeof tos); |
|
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316 | #endif |
|
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317 | |
|
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318 | pkt->unshift_hdr (4); |
395 | pkt->unshift_hdr (4); |
319 | |
396 | |
320 | icmp_header *hdr = (icmp_header *)&((*pkt)[0]); |
397 | icmp_header *hdr = (icmp_header *)&((*pkt)[0]); |
321 | hdr->type = ::conf.icmp_type; |
398 | hdr->type = ::conf.icmp_type; |
322 | hdr->code = 255; |
399 | hdr->code = 255; |
323 | hdr->checksum = 0; |
400 | hdr->checksum = 0; |
324 | hdr->checksum = ipv4_checksum ((u16 *)hdr, pkt->len); |
401 | hdr->checksum = ipv4_checksum ((u16 *)hdr, pkt->len); |
325 | |
402 | |
|
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403 | set_tos (icmpv4_fd, icmpv4_tos, tos); |
326 | sendto (icmpv4_fd, &((*pkt)[0]), pkt->len, 0, si.sav4 (), si.salenv4 ()); |
404 | sendto (icmpv4_fd, &((*pkt)[0]), pkt->len, 0, si.sav4 (), si.salenv4 ()); |
327 | |
405 | |
328 | return true; |
406 | return true; |
329 | } |
407 | } |
330 | #endif |
408 | #endif |
331 | |
409 | |
332 | bool |
410 | bool |
333 | vpn::send_udpv4_packet (vpn_packet *pkt, const sockinfo &si, int tos) |
411 | vpn::send_udpv4_packet (vpn_packet *pkt, const sockinfo &si, int tos) |
334 | { |
412 | { |
335 | #if defined(SOL_IP) && defined(IP_TOS) |
413 | set_tos (udpv4_fd, udpv4_tos, tos); |
336 | setsockopt (udpv4_fd, SOL_IP, IP_TOS, &tos, sizeof tos); |
|
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337 | #endif |
|
|
338 | sendto (udpv4_fd, &((*pkt)[0]), pkt->len, 0, si.sav4 (), si.salenv4 ()); |
414 | sendto (udpv4_fd, &((*pkt)[0]), pkt->len, 0, si.sav4 (), si.salenv4 ()); |
339 | |
415 | |
340 | return true; |
416 | return true; |
341 | } |
417 | } |
342 | |
418 | |
… | |
… | |
353 | { |
429 | { |
354 | // broadcast, this is ugly, but due to the security policy |
430 | // broadcast, this is ugly, but due to the security policy |
355 | // we have to connect to all hosts... |
431 | // we have to connect to all hosts... |
356 | for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c) |
432 | for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c) |
357 | if ((*c)->conf != THISNODE) |
433 | if ((*c)->conf != THISNODE) |
358 | (*c)->inject_data_packet (pkt, true); |
434 | (*c)->inject_data_packet (pkt); |
359 | } |
435 | } |
360 | } |
436 | } |
361 | |
437 | |
362 | void |
438 | void |
363 | vpn::recv_vpn_packet (vpn_packet *pkt, const sockinfo &rsi) |
439 | vpn::recv_vpn_packet (vpn_packet *pkt, const sockinfo &rsi) |
… | |
… | |
404 | { |
480 | { |
405 | switch (si.prot) |
481 | switch (si.prot) |
406 | { |
482 | { |
407 | case PROT_IPv4: |
483 | case PROT_IPv4: |
408 | return send_ipv4_packet (pkt, si, tos); |
484 | return send_ipv4_packet (pkt, si, tos); |
|
|
485 | |
409 | case PROT_UDPv4: |
486 | case PROT_UDPv4: |
410 | return send_udpv4_packet (pkt, si, tos); |
487 | return send_udpv4_packet (pkt, si, tos); |
|
|
488 | |
411 | #if ENABLE_TCP |
489 | #if ENABLE_TCP |
412 | case PROT_TCPv4: |
490 | case PROT_TCPv4: |
413 | return send_tcpv4_packet (pkt, si, tos); |
491 | return send_tcpv4_packet (pkt, si, tos); |
414 | #endif |
492 | #endif |
415 | #if ENABLE_ICMP |
493 | #if ENABLE_ICMP |
… | |
… | |
418 | #endif |
496 | #endif |
419 | #if ENABLE_DNS |
497 | #if ENABLE_DNS |
420 | case PROT_DNSv4: |
498 | case PROT_DNSv4: |
421 | return send_dnsv4_packet (pkt, si, tos); |
499 | return send_dnsv4_packet (pkt, si, tos); |
422 | #endif |
500 | #endif |
423 | |
|
|
424 | default: |
501 | default: |
425 | slog (L_CRIT, _("%s: FATAL: trying to send packet with unsupported protocol"), (const char *)si); |
502 | slog (L_CRIT, _("%s: FATAL: trying to send packet with unsupported protocol"), (const char *)si); |
426 | } |
503 | } |
427 | |
504 | |
428 | return false; |
505 | return false; |
429 | } |
506 | } |
430 | |
507 | |
431 | void |
508 | inline void |
432 | vpn::ipv4_ev (io_watcher &w, short revents) |
509 | vpn::ipv4_ev (ev::io &w, int revents) |
433 | { |
510 | { |
434 | if (revents & EVENT_READ) |
511 | if (revents & EV_READ) |
435 | { |
512 | { |
436 | vpn_packet *pkt = new vpn_packet; |
513 | vpn_packet *pkt = new vpn_packet; |
437 | struct sockaddr_in sa; |
514 | struct sockaddr_in sa; |
438 | socklen_t sa_len = sizeof (sa); |
515 | socklen_t sa_len = sizeof (sa); |
439 | int len; |
516 | int len; |
… | |
… | |
467 | exit (EXIT_FAILURE); |
544 | exit (EXIT_FAILURE); |
468 | } |
545 | } |
469 | } |
546 | } |
470 | |
547 | |
471 | #if ENABLE_ICMP |
548 | #if ENABLE_ICMP |
472 | void |
549 | inline void |
473 | vpn::icmpv4_ev (io_watcher &w, short revents) |
550 | vpn::icmpv4_ev (ev::io &w, int revents) |
474 | { |
551 | { |
475 | if (revents & EVENT_READ) |
552 | if (revents & EV_READ) |
476 | { |
553 | { |
477 | vpn_packet *pkt = new vpn_packet; |
554 | vpn_packet *pkt = new vpn_packet; |
478 | struct sockaddr_in sa; |
555 | struct sockaddr_in sa; |
479 | socklen_t sa_len = sizeof (sa); |
556 | socklen_t sa_len = sizeof (sa); |
480 | int len; |
557 | int len; |
… | |
… | |
515 | exit (EXIT_FAILURE); |
592 | exit (EXIT_FAILURE); |
516 | } |
593 | } |
517 | } |
594 | } |
518 | #endif |
595 | #endif |
519 | |
596 | |
520 | void |
597 | inline void |
521 | vpn::udpv4_ev (io_watcher &w, short revents) |
598 | vpn::udpv4_ev (ev::io &w, int revents) |
522 | { |
599 | { |
523 | if (revents & EVENT_READ) |
600 | if (revents & EV_READ) |
524 | { |
601 | { |
525 | vpn_packet *pkt = new vpn_packet; |
602 | vpn_packet *pkt = new vpn_packet; |
526 | struct sockaddr_in sa; |
603 | struct sockaddr_in sa; |
527 | socklen_t sa_len = sizeof (sa); |
604 | socklen_t sa_len = sizeof (sa); |
528 | int len; |
605 | int len; |
… | |
… | |
552 | revents); |
629 | revents); |
553 | exit (EXIT_FAILURE); |
630 | exit (EXIT_FAILURE); |
554 | } |
631 | } |
555 | } |
632 | } |
556 | |
633 | |
557 | void |
634 | inline void |
558 | vpn::tap_ev (io_watcher &w, short revents) |
635 | vpn::tap_ev (ev::io &w, int revents) |
559 | { |
636 | { |
560 | if (revents & EVENT_READ) |
637 | if (revents & EV_READ) |
561 | { |
638 | { |
562 | /* process data */ |
639 | /* process data */ |
563 | tap_packet *pkt; |
640 | tap_packet *pkt; |
564 | |
641 | |
565 | pkt = tap->recv (); |
642 | pkt = tap->recv (); |
… | |
… | |
594 | } |
671 | } |
595 | else |
672 | else |
596 | abort (); |
673 | abort (); |
597 | } |
674 | } |
598 | |
675 | |
599 | void |
676 | inline void |
600 | vpn::event_cb (time_watcher &w) |
677 | vpn::event_cb (ev::timer &w, int) |
601 | { |
678 | { |
602 | if (events) |
679 | if (events) |
603 | { |
680 | { |
604 | if (events & EVENT_SHUTDOWN) |
681 | if (events & EVENT_SHUTDOWN) |
605 | { |
682 | { |
… | |
… | |
696 | } |
773 | } |
697 | |
774 | |
698 | void |
775 | void |
699 | vpn::dump_status () |
776 | vpn::dump_status () |
700 | { |
777 | { |
701 | slog (L_NOTICE, _("BEGIN status dump (%ld)"), (long)NOW); |
778 | slog (L_NOTICE, _("BEGIN status dump (%ld)"), (long)ev_now ()); |
702 | |
779 | |
703 | for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c) |
780 | for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c) |
704 | (*c)->dump_status (); |
781 | (*c)->dump_status (); |
705 | |
782 | |
706 | slog (L_NOTICE, _("END status dump")); |
783 | slog (L_NOTICE, _("END status dump")); |
707 | } |
784 | } |
708 | |
785 | |
709 | vpn::vpn (void) |
786 | vpn::vpn (void) |
|
|
787 | { |
710 | : event (this, &vpn::event_cb) |
788 | event .set<vpn, &vpn::event_cb > (this); |
711 | , udpv4_ev_watcher (this, &vpn::udpv4_ev) |
789 | udpv4_ev_watcher .set<vpn, &vpn::udpv4_ev > (this); |
712 | , ipv4_ev_watcher (this, &vpn::ipv4_ev) |
790 | ipv4_ev_watcher .set<vpn, &vpn::ipv4_ev > (this); |
713 | #if ENABLE_TCP |
791 | #if ENABLE_TCP |
714 | , tcpv4_ev_watcher (this, &vpn::tcpv4_ev) |
792 | tcpv4_ev_watcher .set<vpn, &vpn::tcpv4_ev > (this); |
715 | #endif |
793 | #endif |
716 | #if ENABLE_ICMP |
794 | #if ENABLE_ICMP |
717 | , icmpv4_ev_watcher(this, &vpn::icmpv4_ev) |
795 | icmpv4_ev_watcher.set<vpn, &vpn::icmpv4_ev> (this); |
718 | #endif |
796 | #endif |
719 | #if ENABLE_DNS |
797 | #if ENABLE_DNS |
720 | , dnsv4_ev_watcher (this, &vpn::dnsv4_ev) |
798 | dnsv4_ev_watcher .set<vpn, &vpn::dnsv4_ev > (this); |
721 | #endif |
799 | #endif |
722 | , tap_ev_watcher (this, &vpn::tap_ev) |
800 | tap_ev_watcher .set<vpn, &vpn::tap_ev > (this); |
723 | { |
|
|
724 | } |
801 | } |
725 | |
802 | |
726 | vpn::~vpn () |
803 | vpn::~vpn () |
727 | { |
804 | { |
728 | } |
805 | } |