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[l2tpns.git] / l2tplac.c
1 /*
2 * Fernando ALVES 2013
3 * Add functionality "LAC" to l2tpns.
4 * Used to forward a ppp session to another "LNS".
5 * GPL licenced
6 */
7
8 #include <errno.h>
9 #include <string.h>
10
11 #include "md5.h"
12 #include "l2tpns.h"
13 #include "util.h"
14 #include "cluster.h"
15
16 #include "l2tplac.h"
17 #include "pppoe.h"
18
19 /* sequence diagram: Client <--> LAC <--> LNS1 <--> LNS2
20 *
21 * LCP Negotiation
22 * Client <-------------------> LAC
23 * Challenge (CHAP/PAP)
24 * Client <-------------------> LAC
25 * SCCRQ
26 * LAC --------------------> LNS1 (Tunnel Open)
27 * SCCRP
28 * LAC <-------------------- LNS1 (Tunnel Open)
29 * SCCCN
30 * LAC --------------------> LNS1 (Tunnel Open)
31 * ZLB
32 * LAC <-------------------- LNS1 (Tunnel Open)
33 * ICRQ
34 * LAC --------------------> LNS1 (Session Open)
35 * ICRP
36 * LAC <-------------------- LNS1 (Session Open)
37 * ICCN
38 * LAC --------------------> LNS1 (Session Open)
39 * ZLB
40 * LAC <-------------------- LNS1 (Session Open)
41 * LCP Negotiation
42 * Client <---------------------------------------------> LNS1
43 * Challenge (CHAP/PAP)
44 * Client <---------------------------------------------> LNS1
45 * SCCRQ
46 * LNS1 --------------------> LNS2 (Tunnel Open)
47 * SCCRP
48 * LNS1 <-------------------- LNS2 (Tunnel Open)
49 * SCCCN
50 * LNS1 --------------------> LNS2 (Tunnel Open)
51 * ZLB
52 * LNS1 <-------------------- LNS2 (Tunnel Open)
53 * ICRQ
54 * LNS1 --------------------> LNS2 (Session Open)
55 * ICRP
56 * LNS1 <-------------------- LNS2 (Session Open)
57 * ICCN
58 * LNS1 --------------------> LNS2 (Session Open)
59 * ZLB
60 * LNS1 <-------------------- LNS2 (Session Open)
61 * LCP Negotiation
62 * Client <------------------------------------------------------------------------> LNS2
63 * PAP/CHAP Authentification
64 * Client <------------------------------------------------------------------------> LNS2
65 * DATA (ppp)
66 * Client <------------------------------------------------------------------------> LNS2
67 * */
68
69 typedef struct
70 {
71 uint32_t tunnel_type;
72 uint32_t tunnel_medium_type;
73 in_addr_t tunnel_server_endpoint; /* IP remote LNS */
74 char tunnel_password[64]; /* l2tpsecret remote LNS */
75 char tunnel_assignment_id[256];
76 } tunnelrlnst;
77
78 // Max Radius Tunnels by remote LNS
79 #define MAXTAGTUNNEL 0x20
80 static tunnelrlnst ptunnelrlns[MAXTAGTUNNEL];
81
82 /*
83 * Possible configrlns states
84 * CONFRLNSFREE -> CONFRLNSSET -> CONFRLNSFREE
85 */
86 enum
87 {
88 CONFRLNSFREE = 0, // Not in use
89 CONFRLNSSET, // Config Set
90 CONFRLNSSETBYRADIUS // Config Set
91 };
92
93 // struct remote lns
94 typedef struct
95 {
96 int state; // conf state (tunnelstate enum)
97 in_addr_t ip; // Ip for far end
98 uint16_t port; // port for far end
99 hasht auth; // request authenticator
100 char strmaskuser[MAXUSER];
101 char l2tp_secret[64]; // L2TP shared secret
102 char tunnel_assignment_id[256];
103 }
104 configrlns;
105
106 configrlns *pconfigrlns = NULL;
107
108 // Init data structures
109 void lac_initremotelnsdata()
110 {
111 confrlnsidt i;
112
113 if ( !(pconfigrlns = shared_malloc(sizeof(pconfigrlns[0]) * MAXRLNSTUNNEL)) )
114 {
115 LOG(0, 0, 0, "Error doing malloc for tunnels lac: %s\n", strerror(errno));
116 exit(1);
117 }
118
119 memset(pconfigrlns, 0, sizeof(pconfigrlns[0]) * MAXRLNSTUNNEL);
120
121 // Mark all the conf as free.
122 for (i = 1; i < MAXRLNSTUNNEL; i++)
123 pconfigrlns[i].state = CONFRLNSFREE; // mark it as not filled in.
124
125 config->highest_rlnsid = 0;
126
127 lac_reset_rad_tag_tunnel_ctxt();
128 }
129
130 // Reset Radius TAG tunnel context
131 void lac_reset_rad_tag_tunnel_ctxt()
132 {
133 memset(ptunnelrlns, 0, sizeof(ptunnelrlns[0]) * MAXTAGTUNNEL);
134 }
135
136 // Add tunnel_type radius TAG tunnel to context
137 void lac_set_rad_tag_tunnel_type(uint8_t tag, uint32_t tunnel_type)
138 {
139 if (tag < MAXTAGTUNNEL)
140 ptunnelrlns[tag].tunnel_type = tunnel_type;
141 }
142
143 // Add tunnel_medium_type Radius TAG tunnel to context
144 void lac_set_rad_tag_tunnel_medium_type(uint8_t tag, uint32_t tunnel_medium_type)
145 {
146 if (tag < MAXTAGTUNNEL)
147 ptunnelrlns[tag].tunnel_medium_type = tunnel_medium_type;
148 }
149
150 // Add tunnel_server_endpoint Radius TAG tunnel to context
151 void lac_set_rad_tag_tunnel_serv_endpt(uint8_t tag, char *tunnel_server_endpoint)
152 {
153 if (tag < MAXTAGTUNNEL)
154 {
155 ptunnelrlns[tag].tunnel_server_endpoint = ntohl(inet_addr(tunnel_server_endpoint));
156 }
157 }
158
159 // Add tunnel_password Radius TAG tunnel to context
160 void lac_set_rad_tag_tunnel_password(uint8_t tag, char *tunnel_password)
161 {
162 if ((tag < MAXTAGTUNNEL) && (strlen(tunnel_password) < 64))
163 {
164 strcpy(ptunnelrlns[tag].tunnel_password, tunnel_password);
165 }
166 }
167
168 // Add tunnel_assignment_id Radius TAG tunnel to context
169 void lac_set_rad_tag_tunnel_assignment_id(uint8_t tag, char *tunnel_assignment_id)
170 {
171 if ((tag < MAXTAGTUNNEL) && (strlen(tunnel_assignment_id) < 256))
172 {
173 strcpy(ptunnelrlns[tag].tunnel_assignment_id, tunnel_assignment_id);
174 }
175 }
176
177 // Select a tunnel_assignment_id
178 int lac_rad_select_assignment_id(sessionidt s, char *assignment_id)
179 {
180 int idtag;
181 int nbtagfound = 0;
182 int bufidtag[MAXTAGTUNNEL];
183
184 for (idtag = 0; idtag < MAXTAGTUNNEL; ++idtag)
185 {
186 if (ptunnelrlns[idtag].tunnel_type == 0)
187 continue;
188 else if (ptunnelrlns[idtag].tunnel_type != 3) // 3 == L2TP tunnel type
189 LOG(1, s, session[s].tunnel, "Error, Only L2TP tunnel type supported\n");
190 else if (ptunnelrlns[idtag].tunnel_medium_type != 1)
191 LOG(1, s, session[s].tunnel, "Error, Only IP tunnel medium type supported\n");
192 else if (ptunnelrlns[idtag].tunnel_server_endpoint == 0)
193 LOG(1, s, session[s].tunnel, "Error, Bad IP tunnel server endpoint \n");
194 else if (strlen(ptunnelrlns[idtag].tunnel_assignment_id) > 0)
195 {
196 bufidtag[nbtagfound] = idtag;
197 nbtagfound++;
198 }
199 }
200
201 if (nbtagfound > 0)
202 {
203 // random between 0 and nbtagfound-1
204 idtag = (rand() % nbtagfound);
205
206 if (idtag >= nbtagfound)
207 idtag = 0; //Sanity checks.
208
209 strcpy(assignment_id, ptunnelrlns[bufidtag[idtag]].tunnel_assignment_id);
210 return 1;
211 }
212
213 // Error no tunnel_assignment_id found
214 return 0;
215 }
216
217 // Save the 'radius tag tunnels' context on global configuration
218 void lac_save_rad_tag_tunnels(sessionidt s)
219 {
220 confrlnsidt idrlns;
221 int idtag;
222
223 for (idtag = 0; idtag < MAXTAGTUNNEL; ++idtag)
224 {
225 if (ptunnelrlns[idtag].tunnel_type == 0)
226 continue;
227 else if (ptunnelrlns[idtag].tunnel_type != 3) // 3 == L2TP tunnel type
228 LOG(1, s, session[s].tunnel, "Error, Only L2TP tunnel type supported\n");
229 else if (ptunnelrlns[idtag].tunnel_medium_type != 1)
230 LOG(1, s, session[s].tunnel, "Error, Only IP tunnel medium type supported\n");
231 else if (ptunnelrlns[idtag].tunnel_server_endpoint == 0)
232 LOG(1, s, session[s].tunnel, "Error, Bad IP tunnel server endpoint \n");
233 else if (strlen(ptunnelrlns[idtag].tunnel_assignment_id) <= 0)
234 LOG(1, s, session[s].tunnel, "Error, No tunnel_assignment_id \n");
235 else if (ptunnelrlns[idtag].tunnel_server_endpoint == ntohl(config->bind_address))
236 LOG(0, s, session[s].tunnel, "Error, IP Remote LNS == IP local bind address (%s) !!!\n", fmtaddr(config->bind_address, 0));
237 else
238 {
239 for (idrlns = 1; idrlns < MAXRLNSTUNNEL; ++idrlns)
240 {
241 if (pconfigrlns[idrlns].state == CONFRLNSFREE)
242 {
243 pconfigrlns[idrlns].ip = ptunnelrlns[idtag].tunnel_server_endpoint;
244 pconfigrlns[idrlns].port = L2TPPORT; //Default L2TP port
245 strcpy(pconfigrlns[idrlns].l2tp_secret, ptunnelrlns[idtag].tunnel_password);
246 strcpy(pconfigrlns[idrlns].tunnel_assignment_id, ptunnelrlns[idtag].tunnel_assignment_id);
247
248 config->highest_rlnsid = idrlns;
249
250 pconfigrlns[idrlns].state = CONFRLNSSETBYRADIUS;
251
252 break;
253 }
254 else if (pconfigrlns[idrlns].state == CONFRLNSSETBYRADIUS)
255 {
256 if ( (pconfigrlns[idrlns].ip == ptunnelrlns[idtag].tunnel_server_endpoint) &&
257 (strcmp(pconfigrlns[idrlns].tunnel_assignment_id, ptunnelrlns[idtag].tunnel_assignment_id) == 0) )
258 {
259 // l2tp_secret may be changed
260 strcpy(pconfigrlns[idrlns].l2tp_secret, ptunnelrlns[idtag].tunnel_password);
261 pconfigrlns[idrlns].port = L2TPPORT; //Default L2TP poart
262
263 if (config->highest_rlnsid < idrlns) config->highest_rlnsid = idrlns;
264
265 break;
266 }
267 }
268 }
269
270 if (idrlns >= MAXRLNSTUNNEL)
271 {
272 LOG(0, s, session[s].tunnel, "No more Remote LNS Conf Free\n");
273 return;
274 }
275 }
276 }
277 }
278
279 // Create Remote LNS a Tunnel or Session
280 static int lac_create_tunnelsession(tunnelidt t, sessionidt s, confrlnsidt i_conf, char * puser)
281 {
282 if (t == 0)
283 {
284 if (main_quit == QUIT_SHUTDOWN) return 0;
285
286 // Start Open Tunnel
287 if (!(t = lac_new_tunnel()))
288 {
289 LOG(1, 0, 0, "No more tunnels\n");
290 STAT(tunnel_overflow);
291 return 0;
292 }
293 lac_tunnelclear(t);
294 tunnel[t].ip = pconfigrlns[i_conf].ip;
295 tunnel[t].port = pconfigrlns[i_conf].port;
296 tunnel[t].window = 4; // default window
297 tunnel[t].isremotelns = i_conf;
298 STAT(tunnel_created);
299
300 random_data(pconfigrlns[i_conf].auth, sizeof(pconfigrlns[i_conf].auth));
301
302 LOG(2, 0, t, "Create New tunnel to REMOTE LNS %s for user %s\n", fmtaddr(htonl(tunnel[t].ip), 0), puser);
303 lac_send_SCCRQ(t, pconfigrlns[i_conf].auth, sizeof(pconfigrlns[i_conf].auth));
304 }
305 else if (tunnel[t].state == TUNNELOPEN)
306 {
307 if (main_quit != QUIT_SHUTDOWN)
308 {
309
310 /**********************/
311 /** Open New session **/
312 /**********************/
313 sessionidt new_sess = sessionfree;
314
315 sessionfree = session[new_sess].next;
316 memset(&session[new_sess], 0, sizeof(session[new_sess]));
317
318 if (new_sess > config->cluster_highest_sessionid)
319 config->cluster_highest_sessionid = new_sess;
320
321 session[new_sess].opened = time_now;
322 session[new_sess].tunnel = t;
323 session[new_sess].last_packet = session[s].last_data = time_now;
324
325 session[new_sess].ppp.phase = Establish;
326 session[new_sess].ppp.lcp = Starting;
327 session[s].ppp.phase = Establish;
328
329 LOG(2, 0, t, "Open New session to REMOTE LNS %s for user: %s\n", fmtaddr(htonl(tunnel[t].ip), 0), puser);
330 // Sent ICRQ Incoming-call-request
331 lac_send_ICRQ(t, new_sess);
332
333 // Set session to forward to another LNS
334 session[s].forwardtosession = new_sess;
335 session[new_sess].forwardtosession = s;
336 strncpy(session[s].user, puser, sizeof(session[s].user) - 1);
337 strncpy(session[new_sess].user, puser, sizeof(session[new_sess].user) - 1);
338
339 STAT(session_created);
340 }
341 else
342 {
343 lac_tunnelshutdown(t, "Shutting down", 6, 0, 0);
344 }
345 }
346 else
347 {
348 /** TODO **/
349 LOG(1, 0, t, "(REMOTE LNS) tunnel is not open\n");
350 }
351
352 return 1;
353 }
354 // Check if session must be forwarded to another LNS
355 // return 1 if the session must be forwarded (and Creating a tunnel/session has been started)
356 // else 0.
357 // Note: check from the configuration read on the startup-config (see setforward)
358 int lac_conf_forwardtoremotelns(sessionidt s, char * puser)
359 {
360 tunnelidt t, j;
361 confrlnsidt i;
362
363 for (i = 1; i <= config->highest_rlnsid ; ++i)
364 {
365 if ( (pconfigrlns[i].state == CONFRLNSSET) && (NULL != strstr(puser, pconfigrlns[i].strmaskuser)) )
366 {
367 t = 0;
368 for (j = 0; j <= config->cluster_highest_tunnelid ; ++j)
369 {
370 if ((tunnel[j].isremotelns) &&
371 (tunnel[j].ip == pconfigrlns[i].ip) &&
372 (tunnel[j].port == pconfigrlns[i].port) &&
373 (tunnel[j].state != TUNNELDIE))
374 {
375 t = j;
376 if (tunnel[t].isremotelns != i)
377 {
378 if ( (tunnel[t].state == TUNNELOPEN) || (tunnel[t].state == TUNNELOPENING) )
379 {
380 LOG(1, 0, t, "Tunnel Remote LNS ID inconsistency (IP RLNS:%s)\n",
381 fmtaddr(htonl(pconfigrlns[i].ip), 0));
382
383 tunnel[t].isremotelns = i;
384 }
385 else t = 0;
386 }
387 break;
388 }
389 }
390
391 return lac_create_tunnelsession(t, s, i, puser);
392 }
393 }
394
395 return 0;
396 }
397
398 // return 1 if the session must be forwarded (and Creating a tunnel/session has been started)
399 // else 0.
400 // Note: Started from a radius response
401 int lac_rad_forwardtoremotelns(sessionidt s, char *assignment_id, char * puser)
402 {
403 tunnelidt t, j;
404 confrlnsidt i;
405
406 for (i = 1; i <= config->highest_rlnsid ; ++i)
407 {
408 if ((pconfigrlns[i].state == CONFRLNSSETBYRADIUS) &&
409 (strcmp(pconfigrlns[i].tunnel_assignment_id, assignment_id) == 0))
410 {
411 t = 0;
412 for (j = 1; j <= config->cluster_highest_tunnelid ; ++j)
413 {
414 if ((tunnel[j].isremotelns == i) &&
415 (tunnel[j].ip == pconfigrlns[i].ip) &&
416 (tunnel[j].port == pconfigrlns[i].port) &&
417 (tunnel[j].state != TUNNELDIE))
418 {
419 if ( (tunnel[j].state == TUNNELOPEN) ||
420 (tunnel[j].state == TUNNELOPENING) )
421 {
422 t = j;
423 LOG(3, 0, t, "Tunnel Remote LNS already open(ing) (RLNS IP:%s)\n", fmtaddr(htonl(pconfigrlns[i].ip), 0));
424 break;
425 }
426 }
427 }
428
429 return lac_create_tunnelsession(t, s, i, puser);
430 }
431 }
432
433 return 0;
434 }
435
436 // Calcul the remote LNS auth
437 void lac_calc_rlns_auth(tunnelidt t, uint8_t id, uint8_t *out)
438 {
439 MD5_CTX ctx;
440 confrlnsidt idrlns;
441
442 idrlns = tunnel[t].isremotelns;
443
444 MD5_Init(&ctx);
445 MD5_Update(&ctx, &id, 1);
446 MD5_Update(&ctx, pconfigrlns[idrlns].l2tp_secret, strlen(pconfigrlns[idrlns].l2tp_secret));
447 MD5_Update(&ctx, pconfigrlns[idrlns].auth, 16);
448 MD5_Final(out, &ctx);
449 }
450
451 // Forward session to LAC or Remote LNS
452 int lac_session_forward(uint8_t *buf, int len, sessionidt sess, uint16_t proto, in_addr_t s_addr, int sin_port)
453 {
454 uint16_t t = 0, s = 0;
455 uint8_t *p = buf + 2; // First word L2TP options
456
457 s = session[sess].forwardtosession;
458 if (session[s].forwardtosession != sess)
459 {
460 LOG(0, sess, session[sess].tunnel, "Link Session (%u) broken\n", s);
461 return 0;
462 }
463
464 t = session[s].tunnel;
465 if (t >= MAXTUNNEL)
466 {
467 LOG(1, s, t, "Session with invalid tunnel ID\n");
468 return 0;
469 }
470
471 if ((!tunnel[t].isremotelns) && (!tunnel[session[sess].tunnel].isremotelns))
472 {
473 LOG(0, sess, session[sess].tunnel, "Link Tunnel Session (%u/%u) broken\n", s, t);
474 return 0;
475 }
476
477 if (!config->cluster_iam_master)
478 {
479 if ( (proto == PPPIPCP) || (proto == PPPLCP) ||
480 (proto == PPPPAP) || (proto == PPPCHAP) ||
481 (proto == PPPIPV6CP && config->ipv6_prefix.s6_addr[0]) ||
482 (proto == PPPCCP) )
483 {
484 session[sess].last_packet = time_now;
485 master_forward_packet(buf, len, s_addr, sin_port);
486 return 1;
487 }
488 }
489
490 if (t == TUNNEL_ID_PPPOE)
491 {
492 pppoe_forwardto_session_pppoe(buf, len, sess, proto);
493 return 1;
494 }
495
496 if (*buf & 0x40)
497 { // length
498 p += 2;
499 }
500
501 *(uint16_t *) p = htons(tunnel[t].far); // tunnel
502 p += 2;
503 *(uint16_t *) p = htons(session[s].far); // session
504 p += 2;
505
506 if (*buf & 0x08)
507 { // ns/nr
508 *(uint16_t *) p = htons(tunnel[t].ns); // sequence
509 p += 2;
510 *(uint16_t *) p = htons(tunnel[t].nr); // sequence
511 p += 2;
512 }
513
514 if ((proto == PPPIP) || (proto == PPPMP) ||(proto == PPPIPV6 && config->ipv6_prefix.s6_addr[0]))
515 {
516 session[sess].last_packet = session[sess].last_data = time_now;
517 // Update STAT IN
518 increment_counter(&session[sess].cin, &session[sess].cin_wrap, len);
519 session[sess].cin_delta += len;
520 session[sess].pin++;
521 sess_local[sess].cin += len;
522 sess_local[sess].pin++;
523
524 session[s].last_data = time_now;
525 // Update STAT OUT
526 increment_counter(&session[s].cout, &session[s].cout_wrap, len); // byte count
527 session[s].cout_delta += len;
528 session[s].pout++;
529 sess_local[s].cout += len;
530 sess_local[s].pout++;
531 }
532 else
533 session[sess].last_packet = time_now;
534
535 tunnelsend(buf, len, t); // send it...
536
537 return 1;
538 }
539
540 // Add new Remote LNS from CLI
541 // return:
542 // 0 = Error
543 // 1 = New Remote LNS conf ADD
544 // 2 = Remote LNS Conf Updated
545 int lac_addremotelns(char *mask, char *IP_RemoteLNS, char *Port_RemoteLNS, char *SecretRemoteLNS)
546 {
547 confrlnsidt idrlns;
548
549 for (idrlns = 1; idrlns < MAXRLNSTUNNEL; ++idrlns)
550 {
551 if (pconfigrlns[idrlns].state == CONFRLNSFREE)
552 {
553 snprintf((char *) pconfigrlns[idrlns].strmaskuser, sizeof(pconfigrlns[idrlns].strmaskuser), "%s", mask);
554 pconfigrlns[idrlns].ip = ntohl(inet_addr(IP_RemoteLNS));
555 pconfigrlns[idrlns].port = atoi(Port_RemoteLNS);
556 snprintf((char *) pconfigrlns[idrlns].l2tp_secret, sizeof(pconfigrlns[idrlns].l2tp_secret), "%s", SecretRemoteLNS);
557
558 config->highest_rlnsid = idrlns;
559
560 pconfigrlns[idrlns].state = CONFRLNSSET;
561
562 return 1;
563 }
564 else if ((pconfigrlns[idrlns].state == CONFRLNSSET) && (strcmp(pconfigrlns[idrlns].strmaskuser, mask) == 0))
565 {
566 if ( (pconfigrlns[idrlns].ip != ntohl(inet_addr(IP_RemoteLNS))) ||
567 (pconfigrlns[idrlns].port != atoi(Port_RemoteLNS)) ||
568 (strcmp(pconfigrlns[idrlns].l2tp_secret, SecretRemoteLNS) != 0) )
569 {
570 memset(&pconfigrlns[idrlns], 0, sizeof(pconfigrlns[idrlns]));
571 snprintf((char *) pconfigrlns[idrlns].strmaskuser, sizeof(pconfigrlns[idrlns].strmaskuser), "%s", mask);
572 pconfigrlns[idrlns].ip = ntohl(inet_addr(IP_RemoteLNS));
573 pconfigrlns[idrlns].port = atoi(Port_RemoteLNS);
574 snprintf((char *) pconfigrlns[idrlns].l2tp_secret, sizeof(pconfigrlns[idrlns].l2tp_secret), "%s", SecretRemoteLNS);
575
576 if (config->highest_rlnsid < idrlns) config->highest_rlnsid = idrlns;
577
578 pconfigrlns[idrlns].state = CONFRLNSSET;
579 // Conf Updated, the tunnel must be dropped
580 return 2;
581 }
582
583 return 1;
584 }
585 }
586
587 LOG(0, 0, 0, "No more Remote LNS Conf Free\n");
588
589 return 0;
590 }
591
592 // Cli Show remote LNS defined
593 int lac_cli_show_remotelns(confrlnsidt idrlns, char *strout)
594 {
595 if (idrlns > config->highest_rlnsid)
596 return 0;
597
598 if (idrlns == 0)
599 // Show Summary
600 sprintf(strout, "%15s %3s %-32s %-32s %11s %7s %10s",
601 "IP Remote LNS",
602 "TID",
603 "l2tp secret",
604 "assignment Id",
605 "File/Radius",
606 "State",
607 "Count Sess");
608 else
609 {
610 tunnelidt t, tfound = 0;
611 sessionidt s;
612 int countsess = 0;
613 char state[20];
614
615 strcpy(state, "Close");
616 for (t = 0; t <= config->cluster_highest_tunnelid ; ++t)
617 {
618 if ((tunnel[t].isremotelns == idrlns) &&
619 (tunnel[t].ip == pconfigrlns[idrlns].ip) &&
620 (tunnel[t].port == pconfigrlns[idrlns].port) &&
621 (tunnel[t].state != TUNNELDIE))
622 {
623 if (tunnel[t].state == TUNNELOPENING)
624 strcpy(state, "Opening");
625 else if (tunnel[t].state == TUNNELOPEN)
626 strcpy(state, "Open");
627
628 for (s = 1; s <= config->cluster_highest_sessionid ; ++s)
629 if (session[s].tunnel == t)
630 countsess++;
631 tfound = t;
632 break;
633 }
634 }
635
636 sprintf(strout, "%15s %3u %-32s %-32s %11s %7s %10u",
637 fmtaddr(htonl(pconfigrlns[idrlns].ip), 0),
638 tfound,
639 pconfigrlns[idrlns].l2tp_secret,
640 pconfigrlns[idrlns].tunnel_assignment_id,
641 (pconfigrlns[idrlns].state == CONFRLNSSET?"File":(pconfigrlns[idrlns].state == CONFRLNSSETBYRADIUS?"Radius":"Free")),
642 state,
643 countsess);
644 }
645
646 return 1;
647 }
for cloning use: "git clone git://git.sameswireless.fr/l2tpns.git" ; For add to your sources.list: "deb http://package.sameswifi.fr/ jessie main"