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Comparing gvpe/src/vpn.C (file contents):
Revision 1.31 by pcg, Sat Mar 5 19:13:16 2005 UTC vs.
Revision 1.38 by pcg, Tue Apr 26 00:55:56 2005 UTC

… …
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
47vpn network; // THE vpn (bad design...) 47vpn network; // THE vpn (bad design...)
48 48
49///////////////////////////////////////////////////////////////////////////// 49/////////////////////////////////////////////////////////////////////////////
50 50
51const char *vpn::script_if_up () 51void
52vpn::script_init_env ()
52{ 53{
53 // the tunnel device mtu should be the physical mtu - overhead 54 // the tunnel device mtu should be the physical mtu - overhead
54 // the tricky part is rounding to the cipher key blocksize 55 // the tricky part is rounding to the cipher key blocksize
55 int mtu = conf.mtu - ETH_OVERHEAD - VPE_OVERHEAD - MAX_OVERHEAD; 56 int mtu = conf.mtu - ETH_OVERHEAD - VPE_OVERHEAD - MAX_OVERHEAD;
56 mtu += ETH_OVERHEAD - 6 - 6; // now we have the data portion 57 mtu += ETH_OVERHEAD - 6 - 6; // now we have the data portion
57 mtu -= mtu % EVP_CIPHER_block_size (CIPHER); // round 58 mtu -= mtu % EVP_CIPHER_block_size (CIPHER); // round
58 mtu -= ETH_OVERHEAD - 6 - 6; // and get interface mtu again 59 mtu -= ETH_OVERHEAD - 6 - 6; // and get interface mtu again
59 60
60 char *env; 61 char *env;
61 asprintf (&env, "CONFBASE=%s", confbase); putenv (env); 62 asprintf (&env, "CONFBASE=%s", confbase); putenv (env);
62 asprintf (&env, "NODENAME=%s", THISNODE->nodename); putenv (env);
63 asprintf (&env, "NODEID=%d", THISNODE->id); putenv (env);
64 asprintf (&env, "IFNAME=%s", tap->interface ()); putenv (env); 63 asprintf (&env, "IFNAME=%s", tap->interface ()); putenv (env);
65 asprintf (&env, "IFTYPE=%s", IFTYPE); putenv (env); 64 asprintf (&env, "IFTYPE=%s", IFTYPE); putenv (env);
66 asprintf (&env, "IFSUBTYPE=%s", IFSUBTYPE); putenv (env); 65 asprintf (&env, "IFSUBTYPE=%s", IFSUBTYPE); putenv (env);
67 asprintf (&env, "MTU=%d", mtu); putenv (env); 66 asprintf (&env, "MTU=%d", mtu); putenv (env);
68 asprintf (&env, "MAC=%02x:%02x:%02x:%02x:%02x:%02x", 67 asprintf (&env, "NODES=%d", conns.size ()); putenv (env);
69 0xfe, 0xfd, 0x80, 0x00, THISNODE->id >> 8, 68 asprintf (&env, "NODEID=%d", THISNODE->id); putenv (env);
70 THISNODE->id & 0xff);
71 putenv (env);
72 69
70 conns [THISNODE->id - 1]->script_init_env ("");
71
72 for (conns_vector::iterator c = conns.begin (); c != conns.end (); ++c)
73 {
74 char ext[16];
75 snprintf (ext, 16, "_%d", (*c)->conf->id);
76 (*c)->script_init_env (ext);
77 }
78}
79
80const char *vpn::script_if_init ()
81{
82 script_init_env ();
83
84 return tap->if_up ();
85}
86
87const char *vpn::script_if_up ()
88{
89 script_init_env ();
90
91 char *filename;
92 asprintf (&filename,
93 "%s/%s",
94 confbase,
73 return ::conf.script_if_up ? ::conf.script_if_up : "if-up"; 95 ::conf.script_if_up ? ::conf.script_if_up : "if-up");
96
97 return filename;
74} 98}
75 99
76int 100int
77vpn::setup () 101vpn::setup ()
78{ 102{
… …
84 108
85 if (ipv4_fd < 0) 109 if (ipv4_fd < 0)
86 return -1; 110 return -1;
87 111
88 fcntl (ipv4_fd, F_SETFL, O_NONBLOCK); 112 fcntl (ipv4_fd, F_SETFL, O_NONBLOCK);
113 fcntl (ipv4_fd, F_SETFD, FD_CLOEXEC);
89 114
90#if defined(SOL_IP) && defined(IP_MTU_DISCOVER) 115#if defined(SOL_IP) && defined(IP_MTU_DISCOVER)
91 // this I really consider a linux bug. I am neither connected 116 // this I really consider a linux bug. I am neither connected
92 // nor do I fragment myself. Linux still sets DF and doesn't 117 // nor do I fragment myself. Linux still sets DF and doesn't
93 // fragment for me sometimes. 118 // fragment for me sometimes.
… …
116 141
117 if (udpv4_fd < 0) 142 if (udpv4_fd < 0)
118 return -1; 143 return -1;
119 144
120 fcntl (udpv4_fd, F_SETFL, O_NONBLOCK); 145 fcntl (udpv4_fd, F_SETFL, O_NONBLOCK);
146 fcntl (udpv4_fd, F_SETFD, FD_CLOEXEC);
121 147
122 // standard daemon practise... 148 // standard daemon practise...
123 { 149 {
124 int oval = 1; 150 int oval = 1;
125 setsockopt (udpv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval); 151 setsockopt (udpv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval);
… …
155 181
156 if (icmpv4_fd < 0) 182 if (icmpv4_fd < 0)
157 return -1; 183 return -1;
158 184
159 fcntl (icmpv4_fd, F_SETFL, O_NONBLOCK); 185 fcntl (icmpv4_fd, F_SETFL, O_NONBLOCK);
186 fcntl (icmpv4_fd, F_SETFD, FD_CLOEXEC);
160 187
161#ifdef ICMP_FILTER 188#ifdef ICMP_FILTER
162 { 189 {
163 icmp_filter oval; 190 icmp_filter oval;
164 oval.data = 0xffffffff; 191 oval.data = 0xffffffff;
… …
173 // this I really consider a linux bug. I am neither connected 200 // this I really consider a linux bug. I am neither connected
174 // nor do I fragment myself. Linux still sets DF and doesn't 201 // nor do I fragment myself. Linux still sets DF and doesn't
175 // fragment for me sometimes. 202 // fragment for me sometimes.
176 { 203 {
177 int oval = IP_PMTUDISC_DONT; 204 int oval = IP_PMTUDISC_DONT;
178 setsockopt (udpv4_fd, SOL_IP, IP_MTU_DISCOVER, &oval, sizeof oval); 205 setsockopt (icmpv4_fd, SOL_IP, IP_MTU_DISCOVER, &oval, sizeof oval);
179 } 206 }
180#endif 207#endif
181 208
182 sockinfo si (THISNODE, PROT_ICMPv4); 209 sockinfo si (THISNODE, PROT_ICMPv4);
183 210
… …
200 227
201 if (tcpv4_fd < 0) 228 if (tcpv4_fd < 0)
202 return -1; 229 return -1;
203 230
204 fcntl (tcpv4_fd, F_SETFL, O_NONBLOCK); 231 fcntl (tcpv4_fd, F_SETFL, O_NONBLOCK);
232 fcntl (tcpv4_fd, F_SETFD, FD_CLOEXEC);
205 233
206 // standard daemon practise... 234 // standard daemon practise...
207 { 235 {
208 int oval = 1; 236 int oval = 1;
209 setsockopt (tcpv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval); 237 setsockopt (tcpv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval);
… …
235 dnsv4_fd = socket (PF_INET, SOCK_DGRAM, IPPROTO_UDP); 263 dnsv4_fd = socket (PF_INET, SOCK_DGRAM, IPPROTO_UDP);
236 264
237 if (dnsv4_fd < 0) 265 if (dnsv4_fd < 0)
238 return -1; 266 return -1;
239 267
268 fcntl (dnsv4_fd, F_SETFL, O_NONBLOCK);
269 fcntl (dnsv4_fd, F_SETFD, FD_CLOEXEC);
270
271# if defined(SOL_IP) && defined(IP_MTU_DISCOVER)
272 // this I really consider a linux bug. I am neither connected
273 // nor do I fragment myself. Linux still sets DF and doesn't
274 // fragment for me sometimes.
275 {
276 int oval = IP_PMTUDISC_DONT;
277 setsockopt (dnsv4_fd, SOL_IP, IP_MTU_DISCOVER, &oval, sizeof oval);
278 }
279# endif
280
240 // standard daemon practise... 281 // standard daemon practise...
241 { 282 {
242 int oval = 1; 283 int oval = 1;
243 setsockopt (dnsv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval); 284 setsockopt (dnsv4_fd, SOL_SOCKET, SO_REUSEADDR, &oval, sizeof oval);
244 } 285 }
… …
255 296
256 dnsv4_ev_watcher.start (dnsv4_fd, EVENT_READ); 297 dnsv4_ev_watcher.start (dnsv4_fd, EVENT_READ);
257 } 298 }
258#endif 299#endif
259 300
301 /////////////////////////////////////////////////////////////////////////////
302
303 reconnect_all ();
304
305 /////////////////////////////////////////////////////////////////////////////
306
260 tap = new tap_device (); 307 tap = new tap_device ();
261 if (!tap) //D this, of course, never catches 308 if (!tap) //D this, of course, never catches
262 { 309 {
263 slog (L_ERR, _("cannot create network interface '%s'"), conf.ifname); 310 slog (L_ERR, _("cannot create network interface '%s'"), conf.ifname);
264 exit (EXIT_FAILURE); 311 exit (EXIT_FAILURE);
265 } 312 }
266 313
314 fcntl (tap->fd, F_SETFD, FD_CLOEXEC);
315
316 if (tap->if_up () &&
317 !run_script (run_script_cb (this, &vpn::script_if_init), true))
318 {
319 slog (L_ERR, _("interface initialization command '%s' failed, exiting."),
320 tap->if_up ());
321 exit (EXIT_FAILURE);
322 }
323
267 run_script (run_script_cb (this, &vpn::script_if_up), true); 324 if (!run_script (run_script_cb (this, &vpn::script_if_up), true))
325 {
326 slog (L_ERR, _("if-up command execution failed, exiting."));
327 exit (EXIT_FAILURE);
328 }
268 329
269 tap_ev_watcher.start (tap->fd, EVENT_READ); 330 tap_ev_watcher.start (tap->fd, EVENT_READ);
270
271 reconnect_all ();
272 331
273 return 0; 332 return 0;
274} 333}
275 334
276bool 335bool

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