2 protocol.c -- handle the meta-protocol
3 Copyright (C) 1999,2000 Ivo Timmermans <itimmermans@bigfoot.com>,
4 2000 Guus Sliepen <guus@sliepen.warande.net>
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 $Id: protocol.c,v 1.28.4.17 2000/06/29 19:47:03 guus Exp $
25 #include <sys/types.h>
30 #include <sys/socket.h>
45 char buffer[MAXBUFSIZE+1];
48 /* Outgoing request routines */
50 int send_ack(conn_list_t *cl)
54 syslog(LOG_DEBUG, _("Sending ACK to %s (%s)"),
55 cl->vpn_hostname, cl->real_hostname);
57 buflen = snprintf(buffer, MAXBUFSIZE, "%d\n", ACK);
59 if((write(cl->meta_socket, buffer, buflen)) < 0)
61 syslog(LOG_ERR, _("Send failed: %d:%d: %m"), __FILE__, __LINE__);
68 int send_termreq(conn_list_t *cl)
72 syslog(LOG_DEBUG, _("Sending TERMREQ to %s (%s)"),
73 cl->vpn_hostname, cl->real_hostname);
75 buflen = snprintf(buffer, MAXBUFSIZE, "%d %lx\n", TERMREQ, myself->vpn_ip);
77 if(write(cl->meta_socket, buffer, buflen) < 0)
80 syslog(LOG_ERR, _("Send failed: %s:%d: %m"), __FILE__, __LINE__);
87 int send_timeout(conn_list_t *cl)
91 syslog(LOG_DEBUG, _("Sending TIMEOUT to %s (%s)"),
92 cl->vpn_hostname, cl->real_hostname);
94 buflen = snprintf(buffer, MAXBUFSIZE, "%d %lx\n", PINGTIMEOUT, myself->vpn_ip);
96 if((write(cl->meta_socket, buffer, buflen)) < 0)
98 syslog(LOG_ERR, _("Send failed: %s:%d: %m"), __FILE__, __LINE__);
105 int send_del_host(conn_list_t *cl, conn_list_t *new_host)
109 syslog(LOG_DEBUG, _("Sending DEL_HOST for %s (%s) to %s (%s)"),
110 new_host->vpn_hostname, new_host->real_hostname, cl->vpn_hostname, cl->real_hostname);
112 buflen = snprintf(buffer, MAXBUFSIZE, "%d %lx\n", DEL_HOST, new_host->vpn_ip);
114 if((write(cl->meta_socket, buffer, buflen)) < 0)
116 syslog(LOG_ERR, _("Send failed: %s:%d: %m"), __FILE__, __LINE__);
123 int send_ping(conn_list_t *cl)
127 syslog(LOG_DEBUG, _("Sending PING to %s (%s)"),
128 cl->vpn_hostname, cl->real_hostname);
130 buflen = snprintf(buffer, MAXBUFSIZE, "%d\n", PING);
132 if((write(cl->meta_socket, buffer, buflen)) < 0)
134 syslog(LOG_ERR, _("Send failed: %s:%d: %m"), __FILE__, __LINE__);
141 int send_pong(conn_list_t *cl)
145 syslog(LOG_DEBUG, _("Sending PONG to %s (%s)"),
146 cl->vpn_hostname, cl->real_hostname);
148 buflen = snprintf(buffer, MAXBUFSIZE, "%d\n", PONG);
150 if((write(cl->meta_socket, buffer, buflen)) < 0)
152 syslog(LOG_ERR, _("Send failed: %s:%d: %m"), __FILE__, __LINE__);
159 int send_add_host(conn_list_t *cl, conn_list_t *new_host)
165 real_ip = new_host->real_ip;
166 hostname = new_host->real_hostname;
167 flags = new_host->flags;
169 /* If we need to propagate information about a new host that wants us to export
170 * it's indirectdata flag, we set the INDIRECTDATA flag and unset the EXPORT...
171 * flag, and set it's real_ip to our vpn_ip, so that net.c send_packet() will
175 if(flags & EXPORTINDIRECTDATA)
177 flags &= ~EXPORTINDIRECTDATA;
178 flags |= INDIRECTDATA;
179 real_ip = myself->vpn_ip;
180 hostname = myself->real_hostname;
184 syslog(LOG_DEBUG, _("Sending ADD_HOST for %s (%s) to %s (%s)"),
185 new_host->vpn_hostname, hostname, cl->vpn_hostname, cl->real_hostname);
187 buflen = snprintf(buffer, MAXBUFSIZE, "%d %lx %lx/%lx:%x %d\n", ADD_HOST, real_ip, new_host->vpn_ip, new_host->vpn_mask, new_host->port, flags);
189 if((write(cl->meta_socket, buffer, buflen)) < 0)
191 syslog(LOG_ERR, _("Send failed: %s:%d: %m"), __FILE__, __LINE__);
198 int send_key_changed(conn_list_t *cl, conn_list_t *src)
202 syslog(LOG_DEBUG, _("Sending KEY_CHANGED origin %s to %s (%s)"),
203 src->vpn_hostname, cl->vpn_hostname, cl->real_hostname);
205 buflen = snprintf(buffer, MAXBUFSIZE, "%d %lx\n", KEY_CHANGED, src->vpn_ip);
207 if((write(cl->meta_socket, buffer, buflen)) < 0)
209 syslog(LOG_ERR, _("Send failed: %s:%d: %m"), __FILE__, __LINE__);
216 void send_key_changed_all(void)
220 for(p = conn_list; p != NULL; p = p->next)
221 if(p->status.meta && p->status.active)
222 send_key_changed(p, myself);
226 int send_basic_info(conn_list_t *cl)
230 syslog(LOG_DEBUG, _("Sending BASIC_INFO to %s"),
233 buflen = snprintf(buffer, MAXBUFSIZE, "%d %d %lx/%lx:%x %d\n", BASIC_INFO, PROT_CURRENT, myself->vpn_ip, myself->vpn_mask, myself->port, myself->flags);
235 if((write(cl->meta_socket, buffer, buflen)) < 0)
237 syslog(LOG_ERR, _("Send failed: %s:%d: %m"), __FILE__, __LINE__);
244 int send_passphrase(conn_list_t *cl)
248 encrypt_passphrase(&tmp);
251 syslog(LOG_DEBUG, _("Sending PASSPHRASE to %s (%s)"),
252 cl->vpn_hostname, cl->real_hostname);
254 buflen = snprintf(buffer, MAXBUFSIZE, "%d %s\n", PASSPHRASE, tmp.phrase);
256 if((write(cl->meta_socket, buffer, buflen)) < 0)
258 syslog(LOG_ERR, _("Send failed: %s:%d: %m"), __FILE__, __LINE__);
265 int send_public_key(conn_list_t *cl)
269 syslog(LOG_DEBUG, _("Sending PUBLIC_KEY to %s (%s)"),
270 cl->vpn_hostname, cl->real_hostname);
272 buflen = snprintf(buffer, MAXBUFSIZE, "%d %s\n", PUBLIC_KEY, my_public_key_base36);
274 if((write(cl->meta_socket, buffer, buflen)) < 0)
276 syslog(LOG_ERR, _("Send failed: %s:%d: %m"), __FILE__, __LINE__);
283 /* WDN doet deze functie? (GS)
284 int send_calculate(conn_list_t *cl, char *k)
287 buflen = snprintf(buffer, MAXBUFSIZE, "%d %s\n", CALCULATE, k);
289 if((write(cl->meta_socket, buffer, buflen)) < 0)
291 syslog(LOG_ERR, _("Send failed: %s:%d: %m"), __FILE__, __LINE__);
299 int send_key_request(ip_t to)
303 fw = lookup_conn(to);
306 syslog(LOG_ERR, _("Attempting to send REQ_KEY to %d.%d.%d.%d, which does not exist?"),
312 syslog(LOG_DEBUG, _("Sending REQ_KEY to %s (%s)"),
313 fw->nexthop->vpn_hostname, fw->nexthop->real_hostname);
315 buflen = snprintf(buffer, MAXBUFSIZE, "%d %lx %lx\n", REQ_KEY, to, myself->vpn_ip);
317 if((write(fw->nexthop->meta_socket, buffer, buflen)) < 0)
319 syslog(LOG_ERR, _("Send failed: %s:%d: %m"), __FILE__, __LINE__);
322 fw->status.waitingforkey = 1;
327 int send_key_answer(conn_list_t *cl, ip_t to)
332 fw = lookup_conn(to);
336 syslog(LOG_ERR, _("Attempting to send ANS_KEY to %d.%d.%d.%d, which does not exist?"),
342 syslog(LOG_DEBUG, _("Sending ANS_KEY to %s (%s)"),
343 fw->nexthop->vpn_hostname, fw->nexthop->real_hostname);
345 buflen = snprintf(buffer, MAXBUFSIZE, "%d %lx %lx %d %s\n", ANS_KEY, to, myself->vpn_ip, my_key_expiry, my_public_key_base36);
347 if((write(fw->nexthop->meta_socket, buffer, buflen)) < 0)
349 syslog(LOG_ERR, _("Send failed: %s:%d: %m"), __FILE__, __LINE__);
357 notify all my direct connections of a new host
358 that was added to the vpn, with the exception
359 of the source of the announcement.
361 int notify_others(conn_list_t *new, conn_list_t *source,
362 int (*function)(conn_list_t*, conn_list_t*))
366 for(p = conn_list; p != NULL; p = p->next)
367 if(p != new && p != source && p->status.meta && p->status.active)
374 notify one connection of everything
377 int notify_one(conn_list_t *new)
381 for(p = conn_list; p != NULL; p = p->next)
382 if(p != new && p->status.active)
383 send_add_host(new, p);
389 The incoming request handlers
392 int basic_info_h(conn_list_t *cl)
397 syslog(LOG_DEBUG, _("Got BASIC_INFO from %s"), cl->real_hostname);
399 if(sscanf(cl->buffer, "%*d %d %lx/%lx:%hx %d", &cl->protocol_version, &cl->vpn_ip, &cl->vpn_mask, &cl->port, &cl->flags) != 5)
401 syslog(LOG_ERR, _("Got bad BASIC_INFO from %s"),
406 cl->vpn_hostname = hostlookup(htonl(cl->vpn_ip));
408 if(cl->protocol_version != PROT_CURRENT)
410 syslog(LOG_ERR, _("Peer uses incompatible protocol version %d"),
411 cl->protocol_version);
415 if(cl->status.outgoing)
417 /* First check if the host we connected to is already in our
418 connection list. If so, we are probably making a loop, which
422 if(old=lookup_conn(cl->vpn_ip))
425 syslog(LOG_NOTICE, _("Uplink %s (%s) is already in our connection list"),
426 cl->vpn_hostname, cl->real_hostname);
427 cl->status.outgoing = 0;
428 old->status.outgoing = 1;
429 terminate_connection(cl);
433 if(setup_vpn_connection(cl) < 0)
440 if(setup_vpn_connection(cl) < 0)
448 int passphrase_h(conn_list_t *cl)
451 cl->pp = xmalloc(sizeof(*(cl->pp)));
453 if(sscanf(cl->buffer, "%*d %as", &(cl->pp->phrase)) != 1)
455 syslog(LOG_ERR, _("Got bad PASSPHRASE from %s (%s)"),
456 cl->vpn_hostname, cl->real_hostname);
459 cl->pp->len = strlen(cl->pp->phrase);
462 syslog(LOG_DEBUG, _("Got PASSPHRASE from %s (%s)"),
463 cl->vpn_hostname, cl->real_hostname);
465 if(cl->status.outgoing)
473 int public_key_h(conn_list_t *cl)
478 if(sscanf(cl->buffer, "%*d %as", &g_n) != 1)
480 syslog(LOG_ERR, _("Got bad PUBLIC_KEY from %s (%s)"),
481 cl->vpn_hostname, cl->real_hostname);
486 syslog(LOG_DEBUG, _("Got PUBLIC_KEY from %s (%s)"),
487 cl->vpn_hostname, cl->real_hostname);
489 if(verify_passphrase(cl, g_n))
492 syslog(LOG_ERR, _("Intruder from %s: passphrase for %s does not match!"),
493 cl->real_hostname, cl->vpn_hostname);
497 if(cl->status.outgoing)
503 /* Okay, before we active the connection, we check if there is another entry
504 in the connection list with the same vpn_ip. If so, it presumably is an
505 old connection that has timed out but we don't know it yet.
508 while(old = lookup_conn(cl->vpn_ip))
510 syslog(LOG_NOTICE, _("Removing old entry for %s at %s in favour of new connection from %s"),
511 cl->vpn_hostname, old->real_hostname, cl->real_hostname);
512 old->status.active = 0;
513 terminate_connection(old);
516 cl->status.active = 1;
519 syslog(LOG_NOTICE, _("Connection with %s (%s) activated"),
520 cl->vpn_hostname, cl->real_hostname);
522 notify_others(cl, NULL, send_add_host);
529 int ack_h(conn_list_t *cl)
533 syslog(LOG_DEBUG, _("Got ACK from %s (%s)"),
534 cl->vpn_hostname, cl->real_hostname);
536 cl->status.active = 1;
538 syslog(LOG_NOTICE, _("Connection with %s (%s) activated"),
539 cl->vpn_hostname, cl->real_hostname);
541 notify_others(cl, NULL, send_add_host);
549 int termreq_h(conn_list_t *cl)
552 if(!cl->status.active)
554 syslog(LOG_ERR, _("Got unauthorized TERMREQ from %s (%s)"),
555 cl->vpn_hostname, cl->real_hostname);
560 syslog(LOG_DEBUG, _("Got TERMREQ from %s (%s)"),
561 cl->vpn_hostname, cl->real_hostname);
563 cl->status.termreq = 1;
565 terminate_connection(cl);
570 int timeout_h(conn_list_t *cl)
573 if(!cl->status.active)
575 syslog(LOG_ERR, _("Got unauthorized TIMEOUT from %s (%s)"),
576 cl->vpn_hostname, cl->real_hostname);
581 syslog(LOG_DEBUG, _("Got TIMEOUT from %s (%s)"),
582 cl->vpn_hostname, cl->real_hostname);
584 cl->status.termreq = 1;
585 terminate_connection(cl);
590 int del_host_h(conn_list_t *cl)
595 if(!cl->status.active)
597 syslog(LOG_ERR, _("Got unauthorized DEL_HOST from %s (%s)"),
598 cl->vpn_hostname, cl->real_hostname);
602 if(sscanf(cl->buffer, "%*d %lx", &vpn_ip) != 1)
604 syslog(LOG_ERR, _("Got bad DEL_HOST from %s (%s)"),
605 cl->vpn_hostname, cl->real_hostname);
609 if(!(fw = lookup_conn(vpn_ip)))
611 syslog(LOG_ERR, _("Got DEL_HOST for %d.%d.%d.%d from %s (%s) which does not exist?"),
612 IP_ADDR_V(vpn_ip), cl->vpn_hostname, cl->real_hostname);
617 syslog(LOG_DEBUG, _("Got DEL_HOST for %s (%s) from %s (%s)"),
618 fw->vpn_hostname, fw->real_hostname, cl->vpn_hostname, cl->real_hostname);
620 notify_others(fw, cl, send_del_host);
622 fw->status.termreq = 1;
623 fw->status.active = 0;
625 terminate_connection(fw);
630 int ping_h(conn_list_t *cl)
633 if(!cl->status.active)
635 syslog(LOG_ERR, _("Got unauthorized PING from %s (%s)"),
636 cl->vpn_hostname, cl->real_hostname);
641 syslog(LOG_DEBUG, _("Got PING from %s (%s)"),
642 cl->vpn_hostname, cl->real_hostname);
644 cl->status.pinged = 0;
645 cl->status.got_pong = 1;
652 int pong_h(conn_list_t *cl)
655 if(!cl->status.active)
657 syslog(LOG_ERR, _("Got unauthorized PONG from %s (%s)"),
658 cl->vpn_hostname, cl->real_hostname);
663 syslog(LOG_DEBUG, _("Got PONG from %s (%s)"),
664 cl->vpn_hostname, cl->real_hostname);
666 cl->status.got_pong = 1;
671 int add_host_h(conn_list_t *cl)
678 conn_list_t *ncn, *old;
680 if(!cl->status.active)
682 syslog(LOG_ERR, _("Got unauthorized ADD_HOST from %s (%s)"),
683 cl->vpn_hostname, cl->real_hostname);
687 if(sscanf(cl->buffer, "%*d %lx %lx/%lx:%hx %d", &real_ip, &vpn_ip, &vpn_mask, &port, &flags) != 5)
689 syslog(LOG_ERR, _("Got bad ADD_HOST from %s (%s)"),
690 cl->vpn_hostname, cl->real_hostname);
694 if(old = lookup_conn(vpn_ip))
696 if((real_ip==old->real_ip) && (vpn_mask==old->vpn_mask) && (port==old->port))
699 syslog(LOG_NOTICE, _("Got duplicate ADD_HOST for %s (%s) from %s (%s)"),
700 old->vpn_hostname, old->real_hostname, cl->vpn_hostname, cl->real_hostname);
701 goto skip_add_host; /* One goto a day keeps the deeply nested if constructions away. */
706 syslog(LOG_NOTICE, _("Removing old entry for %s (%s)"),
707 old->vpn_hostname, old->real_hostname);
708 old->status.active = 0;
709 terminate_connection(old);
713 ncn = new_conn_list();
714 ncn->real_ip = real_ip;
715 ncn->real_hostname = hostlookup(htonl(real_ip));
716 ncn->vpn_ip = vpn_ip;
717 ncn->vpn_mask = vpn_mask;
718 ncn->vpn_hostname = hostlookup(htonl(vpn_ip));
722 ncn->next = conn_list;
724 ncn->status.active = 1;
727 syslog(LOG_DEBUG, _("Got ADD_HOST for %s (%s) from %s (%s)"),
728 ncn->vpn_hostname, ncn->real_hostname, cl->vpn_hostname, cl->real_hostname);
732 notify_others(ncn, cl, send_add_host);
737 int req_key_h(conn_list_t *cl)
743 if(!cl->status.active)
745 syslog(LOG_ERR, _("Got unauthorized REQ_KEY from %s (%s)"),
746 cl->vpn_hostname, cl->real_hostname);
750 if(sscanf(cl->buffer, "%*d %lx %lx", &to, &from) != 2)
752 syslog(LOG_ERR, _("Got bad REQ_KEY from %s (%s)"),
753 cl->vpn_hostname, cl->real_hostname);
758 syslog(LOG_DEBUG, _("Got REQ_KEY origin %d.%d.%d.%d destination %d.%d.%d.%d from %s (%s)"),
759 IP_ADDR_V(from), IP_ADDR_V(to), cl->vpn_hostname, cl->real_hostname);
761 if((to & myself->vpn_mask) == (myself->vpn_ip & myself->vpn_mask))
762 { /* hey! they want something from ME! :) */
763 send_key_answer(cl, from);
767 fw = lookup_conn(to);
771 syslog(LOG_ERR, _("Attempting to forward REQ_KEY to %d.%d.%d.%d, which does not exist?"),
777 syslog(LOG_DEBUG, _("Forwarding REQ_KEY to %s (%s)"),
778 fw->nexthop->vpn_hostname, fw->nexthop->real_hostname);
780 cl->buffer[cl->reqlen-1] = '\n';
782 if(write(fw->nexthop->meta_socket, cl->buffer, cl->reqlen) < 0)
784 syslog(LOG_ERR, _("Send failed: %s:%d: %m"), __FILE__, __LINE__);
791 void set_keys(conn_list_t *cl, int expiry, char *key)
797 cl->public_key = xmalloc(sizeof(*cl->key));
798 cl->public_key->key = NULL;
801 if(cl->public_key->key)
802 free(cl->public_key->key);
803 cl->public_key->length = strlen(key);
804 cl->public_key->expiry = expiry;
805 cl->public_key->key = xmalloc(cl->public_key->length + 1);
806 strcpy(cl->public_key->key, key);
808 ek = make_shared_key(key);
812 cl->key = xmalloc(sizeof(*cl->key));
819 cl->key->length = strlen(ek);
820 cl->key->expiry = expiry;
821 cl->key->key = xmalloc(cl->key->length + 1);
822 strcpy(cl->key->key, ek);
826 int ans_key_h(conn_list_t *cl)
832 conn_list_t *fw, *gk;
834 if(!cl->status.active)
836 syslog(LOG_ERR, _("Got unauthorized ANS_KEY from %s (%s)"),
837 cl->vpn_hostname, cl->real_hostname);
841 if(sscanf(cl->buffer, "%*d %lx %lx %d %as", &to, &from, &expiry, &key) != 4)
843 syslog(LOG_ERR, _("Got bad ANS_KEY from %s (%s)"),
844 cl->vpn_hostname, cl->real_hostname);
849 syslog(LOG_DEBUG, _("Got ANS_KEY origin %d.%d.%d.%d destination %d.%d.%d.%d from %s (%s)"),
850 IP_ADDR_V(from), IP_ADDR_V(to), cl->vpn_hostname, cl->real_hostname);
852 if(to == myself->vpn_ip)
853 { /* hey! that key's for ME! :) */
854 gk = lookup_conn(from);
858 syslog(LOG_ERR, _("Receiving ANS_KEY origin %d.%d.%d.%d from %s (%s), which does not exist?"),
859 IP_ADDR_V(from), cl->vpn_hostname, cl->real_hostname);
863 set_keys(gk, expiry, key);
864 gk->status.validkey = 1;
865 gk->status.waitingforkey = 0;
870 fw = lookup_conn(to);
874 syslog(LOG_ERR, _("Attempting to forward ANS_KEY to %d.%d.%d.%d, which does not exist?"),
880 syslog(LOG_DEBUG, _("Forwarding ANS_KEY to %s (%s)"),
881 fw->nexthop->vpn_hostname, fw->nexthop->real_hostname);
883 cl->buffer[cl->reqlen-1] = '\n';
885 if((write(fw->nexthop->meta_socket, cl->buffer, cl->reqlen)) < 0)
887 syslog(LOG_ERR, _("Send failed: %s:%d: %m"), __FILE__, __LINE__);
894 int key_changed_h(conn_list_t *cl)
899 if(!cl->status.active)
901 syslog(LOG_ERR, _("Got unauthorized KEY_CHANGED from %s (%s)"),
902 cl->vpn_hostname, cl->real_hostname);
906 if(sscanf(cl->buffer, "%*d %lx", &from) != 1)
908 syslog(LOG_ERR, _("Got bad KEY_CHANGED from %s (%s)"),
909 cl->vpn_hostname, cl->real_hostname);
913 ik = lookup_conn(from);
917 syslog(LOG_ERR, _("Got KEY_CHANGED origin %d.%d.%d.%d from %s (%s), which does not exist?"),
918 IP_ADDR_V(from), cl->vpn_hostname, cl->real_hostname);
923 syslog(LOG_DEBUG, _("Got KEY_CHANGED origin %s from %s (%s)"),
924 ik->vpn_hostname, cl->vpn_hostname, cl->real_hostname);
926 ik->status.validkey = 0;
927 ik->status.waitingforkey = 0;
929 notify_others(ik, cl, send_key_changed);
934 int (*request_handlers[256])(conn_list_t*) = {
935 0, ack_h, 0, 0, 0, 0, 0, 0, 0, 0,
936 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
937 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
938 termreq_h, timeout_h, del_host_h, 0, 0, 0, 0, 0, 0, 0,
939 ping_h, pong_h, 0, 0, 0, 0, 0, 0, 0, 0,
940 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
941 add_host_h, basic_info_h, passphrase_h, public_key_h, 0, 0, 0, 0, 0, 0,
942 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
943 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
944 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
945 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
946 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
947 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
948 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
949 req_key_h, ans_key_h, key_changed_h, 0, 0, 0, 0, 0, 0, 0,
950 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
951 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
952 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
953 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
954 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0