2 #include <sys/socket.h>
4 Unacked *rlm_nacklist = NULL; /* not acked list for realm-realm
6 ZRealm *otherrealms; /* points to an array of the known
8 int nrealms = 0; /* number of other realms */
13 * ZRealm *realm_which_realm(struct sockaddr_in *who)
14 * figures out if this packet came from another realm's server
16 * ZRealm *realm_get_realm_by_pid(int pid)
17 * figures out which realm a child handler was for
19 * void kill_realm_pids()
20 * kills all ticket getting childen
22 * char *realm_expand_realm(char *realmname)
23 * figures out what an abbreviated realm expands to
25 * Code_t realm_send_realms()
26 * loops through all realms for a brain dump
28 * int realm_bound_for_realm(char *realm, char *recip)
29 * figures out if recip is in realm, expanding recip's realm
31 * int realm_sender_in_realm(char *realm, char *sender)
32 * figures out if sender is in realm
34 * ZRealm *realm_get_realm_by_name(char *name)
35 * finds a realm struct from the realm array by name, tries expansion
37 * Code_t realm_dispatch(ZNotice_t *notice, int auth, struct sockaddr_in *who,
39 * dispatches a message from a foreign realm
42 * sets up the realm module
44 * void realm_deathgram()
45 * tells other realms this server is going down
48 * tells other realms to resend their idea of their subs to us
50 * Code_t realm_control_dispatch(ZNotice_t *notice, int auth,
51 * struct sockaddr_in *who, Server *server,
53 * dispatches a foreign realm control message
55 * void realm_handoff(ZNotice_t *notice, int auth, struct sockaddr_in *who,
56 * ZRealm *realm, int ack_to_sender)
57 * hands off a message to another realm
59 * void realm_dump_realms(File *fp)
60 * do a database dump of foreign realm info
63 static void realm_sendit __P((ZNotice_t *notice, struct sockaddr_in *who, int auth, ZRealm *realm, int ack_to_sender));
64 static Code_t realm_sendit_auth __P((ZNotice_t *notice, struct sockaddr_in *who, int auth, ZRealm *realm, int ack_to_sender));
65 static void rlm_ack __P((ZNotice_t *notice, Unacked *nacked));
66 static void rlm_nack_cancel __P((ZNotice_t *notice, struct sockaddr_in *who));
67 static void rlm_new_ticket __P(());
68 static void rlm_rexmit __P((void *arg));
69 static Code_t realm_ulocate_dispatch __P((ZNotice_t *notice,int auth,struct sockaddr_in *who,Server *server,ZRealm *realm));
70 static Code_t realm_new_server __P((struct sockaddr_in *, ZNotice_t *, ZRealm *));
71 static Code_t realm_set_server __P((struct sockaddr_in *, ZRealm *));
73 static Code_t ticket_retrieve __P((ZRealm *realm));
74 static int ticket_lookup __P((char *realm));
78 realm_get_idx_by_addr(realm, who)
80 struct sockaddr_in *who;
82 struct sockaddr_in *addr;
85 /* loop through the realms */
86 for (addr = realm->addrs, b = 0; b < realm->count; b++, addr++)
87 if (addr->sin_addr.s_addr == who->sin_addr.s_addr)
94 realm_expand_realm(realmname)
100 /* First, look for an exact match (case insensitive) */
102 if (!strcasecmp(ZGetRealm(), realmname))
106 for (realm = otherrealms, a = 0; a < nrealms; a++, realm++)
107 if (!strcasecmp(realm->name, realmname))
110 /* No exact match. See if there's a partial match */
112 if (!strncasecmp(ZGetRealm(), realmname, strlen(realmname)))
116 for (realm = otherrealms, a = 0; a < nrealms; a++, realm++)
117 if (!strncasecmp(realm->name, realmname, strlen(realmname)))
123 realm_get_realm_by_pid(pid)
129 for (realm = otherrealms, a = 0; a < nrealms; a++, realm++)
130 if (realm->child_pid == pid)
142 for (realm = otherrealms, a = 0; a < nrealms; a++, realm++)
143 if (realm->child_pid != 0)
144 kill(realm->child_pid, 9);
150 get_realm_lists(file)
153 ZRealmname *rlm_list, *rlm;
154 int ii, nused, ntotal;
156 char buf[REALM_SZ + MAXHOSTNAMELEN + 1]; /* one for newline */
157 char realm[REALM_SZ], server[MAXHOSTNAMELEN + 1];
160 if (!(fp = fopen(file, "r")))
161 return((ZRealmname *)0);
163 /* start with 16, realloc if necessary */
165 rlm_list = (ZRealmname *)malloc(ntotal * sizeof(ZRealmname));
167 syslog(LOG_CRIT, "get_realm_lists malloc");
171 while (fgets(buf, REALM_SZ + MAXHOSTNAMELEN + 1, fp)) {
172 if (sscanf(buf, "%s %s", realm, server) != 2) {
173 syslog(LOG_CRIT, "bad format in %s", file);
176 for (ii = 0; ii < nused; ii++) {
177 /* look for this realm */
178 if (!strcmp(rlm_list[ii].name, realm))
183 if (rlm->nused +1 >= rlm->nservers) {
184 /* make more space */
185 rlm->servers = (char **)realloc((char *)rlm->servers,
186 (unsigned)rlm->nservers * 2 *
189 syslog(LOG_CRIT, "get_realm_lists realloc");
194 rlm->servers[rlm->nused++] = strsave(server);
197 if (nused + 1 >= ntotal) {
198 /* make more space */
199 rlm_list = (ZRealmname *)realloc((char *)rlm_list,
200 (unsigned)ntotal * 2 *
203 syslog(LOG_CRIT, "get_realm_lists realloc");
208 rlm = &rlm_list[nused++];
209 strcpy(rlm->name, realm);
212 rlm->servers = (char **)malloc(rlm->nservers * sizeof(char *));
214 syslog(LOG_CRIT, "get_realm_lists malloc");
217 rlm->servers[rlm->nused++] = strsave(server);
220 if (nused + 1 >= ntotal) {
221 rlm_list = (ZRealmname *)realloc((char *)rlm_list,
222 (unsigned)(ntotal + 1) *
225 syslog(LOG_CRIT, "get_realm_lists realloc");
229 *rlm_list[nused].name = '\0';
239 for (cnt = 0; cnt < nrealms; cnt++) {
240 if (retval = (subscr_send_realm_subs(&otherrealms[cnt])) != ZERR_NONE)
246 realm_bound_for_realm(realm, recip)
251 int remote = strcmp(ZGetRealm(), realm);
254 rlm = strchr(recip, '@');
259 if (rlm && strcmp(realm_expand_realm(rlm + 1), realm) == 0)
266 realm_sender_in_realm(realm, sender)
271 int remote = strcmp(ZGetRealm(), realm);
274 rlm = strchr(sender, '@');
279 if (rlm && strcmp((rlm + 1), realm) == 0)
285 int sender_in_realm(notice)
290 realm = strchr(notice->z_sender, '@');
292 if (!realm || !strcmp(realm + 1, ZGetRealm()))
299 realm_which_realm(who)
300 struct sockaddr_in *who;
303 struct sockaddr_in *addr;
306 if (who->sin_port != srv_addr.sin_port)
309 /* loop through the realms */
310 for (realm = otherrealms, a = 0; a < nrealms; a++, realm++)
311 /* loop through the addresses for the realm */
312 for (addr = realm->addrs, b = 0; b < realm->count; b++, addr++)
313 if (addr->sin_addr.s_addr == who->sin_addr.s_addr)
320 realm_get_realm_by_name(name)
326 /* First, look for an exact match (case insensitive) */
327 for (realm = otherrealms, a = 0; a < nrealms; a++, realm++)
328 if (!strcasecmp(realm->name, name))
331 /* Failing that, look for an inexact match */
332 for (realm = otherrealms, a = 0; a < nrealms; a++, realm++)
333 if (!strncasecmp(realm->name, name, strlen(name)))
340 rlm_nack_cancel(notice, who)
341 register ZNotice_t *notice;
342 struct sockaddr_in *who;
344 register ZRealm *which = realm_which_realm(who);
345 register Unacked *nacked, *next;
349 zdbug((LOG_DEBUG, "rlm_nack_cancel: %s:%08X,%08X",
350 inet_ntoa(notice->z_uid.zuid_addr),
351 notice->z_uid.tv.tv_sec, notice->z_uid.tv.tv_usec));
354 syslog(LOG_ERR, "non-realm ack?");
358 for (nacked = rlm_nacklist; nacked; nacked = nacked->next) {
359 if (&otherrealms[nacked->dest.rlm.rlm_idx] == which) {
360 /* First, note the realm appears to be up */
361 which->state = REALM_UP;
362 if (ZCompareUID(&nacked->uid, ¬ice->z_uid)) {
363 timer_reset(nacked->timer);
365 if (nacked->ack_addr.sin_addr.s_addr)
366 rlm_ack(notice, nacked);
369 free(nacked->packet);
377 zdbug((LOG_DEBUG,"nack_cancel: nack not found %s:%08X,%08X",
378 inet_ntoa (notice->z_uid.zuid_addr),
379 notice->z_uid.tv.tv_sec, notice->z_uid.tv.tv_usec));
385 rlm_ack(notice, nacked)
394 /* tell the original sender the result */
396 acknotice.z_message_len = strlen(acknotice.z_message) + 1;
398 packlen = sizeof(ackpack);
400 if ((retval = ZFormatSmallRawNotice(&acknotice, ackpack, &packlen))
402 syslog(LOG_ERR, "rlm_ack format: %s",
403 error_message(retval));
406 zdbug((LOG_DEBUG, "rlm_ack sending to %s/%d",
407 inet_ntoa(nacked->ack_addr.sin_addr),
408 ntohs(nacked->ack_addr.sin_port)));
409 if ((retval = ZSetDestAddr(&nacked->ack_addr)) != ZERR_NONE) {
410 syslog(LOG_WARNING, "rlm_ack set addr: %s",
411 error_message(retval));
414 if ((retval = ZSendPacket(ackpack, packlen, 0)) != ZERR_NONE) {
415 syslog(LOG_WARNING, "rlm_ack xmit: %s", error_message(retval));
421 realm_dispatch(notice, auth, who, server)
424 struct sockaddr_in *who;
428 struct sockaddr_in newwho;
429 Code_t status = ZERR_NONE;
430 char rlm_recipient[REALM_SZ + 1];
432 String *notice_class;
434 if (notice->z_kind == SERVACK || notice->z_kind == SERVNAK) {
435 rlm_nack_cancel(notice, who);
438 /* set up a who for the real origin */
439 memset((caddr_t) &newwho, 0, sizeof(newwho));
440 newwho.sin_family = AF_INET;
441 newwho.sin_addr.s_addr = notice->z_sender_addr.s_addr;
442 newwho.sin_port = hm_port;
444 /* check if it's a control message */
445 realm = realm_which_realm(who);
447 notice_class = make_string(notice->z_class,1);
449 if (class_is_admin(notice_class)) {
450 syslog(LOG_WARNING, "%s sending admin opcode %s",
451 realm->name, notice->z_opcode);
452 } else if (class_is_hm(notice_class)) {
453 syslog(LOG_WARNING, "%s sending hm opcode %s",
454 realm->name, notice->z_opcode);
455 } else if (class_is_control(notice_class)) {
456 status = realm_control_dispatch(notice, auth, who,
458 } else if (class_is_ulogin(notice_class)) {
459 /* don't need to forward this */
460 if (server == me_server) {
461 sprintf(rlm_recipient, "@%s", realm->name);
462 notice->z_recipient = rlm_recipient;
464 sendit(notice, 1, who, 0);
466 } else if (class_is_ulocate(notice_class)) {
467 status = realm_ulocate_dispatch(notice, auth, who, server, realm);
469 /* redo the recipient */
470 if (*notice->z_recipient == '\0') {
471 sprintf(rlm_recipient, "@%s", realm->name);
472 notice->z_recipient = rlm_recipient;
474 } else if (realm_bound_for_realm(ZGetRealm(), notice->z_recipient)
475 && *notice->z_recipient == '@')
477 /* we're responsible for getting this message out */
479 notice->z_recipient = "";
482 /* otherwise, send to local subscribers */
483 sendit(notice, auth, who, external);
493 ZRealmname *rlmnames;
496 struct in_addr *addresses;
499 char rlmprinc[ANAME_SZ+INST_SZ+REALM_SZ+3];
501 sprintf(list_file, "%s/zephyr/%s", SYSCONFDIR, REALM_LIST_FILE);
502 rlmnames = get_realm_lists(list_file);
504 zdbug((LOG_DEBUG, "No other realms"));
509 for (nrealms = 0; *rlmnames[nrealms].name; nrealms++);
511 otherrealms = (ZRealm *)malloc(nrealms * sizeof(ZRealm));
513 syslog(LOG_CRIT, "malloc failed in realm_init");
517 for (ii = 0; ii < nrealms; ii++) {
518 rlm = &otherrealms[ii];
519 strcpy(rlm->name, rlmnames[ii].name);
521 addresses = (struct in_addr *)malloc(rlmnames[ii].nused *
522 sizeof(struct in_addr));
524 syslog(LOG_CRIT, "malloc failed in realm_init");
527 /* convert names to addresses */
529 for (jj = 0; jj < rlmnames[ii].nused; jj++) {
530 hp = gethostbyname(rlmnames[ii].servers[jj]);
532 memmove((caddr_t) &addresses[found], (caddr_t)hp->h_addr,
533 sizeof(struct in_addr));
536 syslog(LOG_WARNING, "hostname failed, %s",
537 rlmnames[ii].servers[jj]);
538 /* free the hostname */
539 free(rlmnames[ii].servers[jj]);
542 rlm->addrs = (struct sockaddr_in *)malloc(found *
543 sizeof (struct sockaddr_in));
545 syslog(LOG_CRIT, "malloc failed in realm_init");
548 for (jj = 0; jj < rlm->count; jj++) {
549 rlm->addrs[jj].sin_family = AF_INET;
550 /* use the server port */
551 rlm->addrs[jj].sin_port = srv_addr.sin_port;
552 rlm->addrs[jj].sin_addr = addresses[jj];
554 client = (Client *) malloc(sizeof(Client));
556 syslog(LOG_CRIT, "malloc failed in realm_init");
559 memset(&client->addr, 0, sizeof(struct sockaddr_in));
561 client->session_keyblock = NULL;
564 memset(&client->session_key, 0, sizeof(client->session_key));
567 sprintf(rlmprinc, "%s.%s@%s", SERVER_SERVICE, SERVER_INSTANCE,
569 client->principal = make_string(rlmprinc, 0);
570 client->last_send = 0;
571 client->last_ack = NOW;
574 client->addr.sin_family = 0;
575 client->addr.sin_port = 0;
576 client->addr.sin_addr.s_addr = 0;
578 rlm->client = client;
579 rlm->idx = (rlm->count) ? random() % rlm->count : 0;
583 /* Assume the best */
584 rlm->state = REALM_TARDY;
586 free(rlmnames[ii].servers);
593 realm_deathgram(server)
597 char rlm_recipient[REALM_SZ + 1];
600 /* Get it out once, and assume foreign servers will share */
601 for (realm = otherrealms, jj = 0; jj < nrealms; jj++, realm++) {
604 char rlm_recipient[REALM_SZ + 1];
607 memset (&snotice, 0, sizeof (snotice));
609 snotice.z_kind = ACKED;
610 snotice.z_port = srv_addr.sin_port;
611 snotice.z_class = ZEPHYR_CTL_CLASS;
612 snotice.z_class_inst = ZEPHYR_CTL_REALM;
613 snotice.z_opcode = SERVER_SHUTDOWN;
614 snotice.z_sender = myname; /* my host name */
615 sprintf(rlm_recipient, "@%s", realm->name);
616 snotice.z_recipient = rlm_recipient;
617 snotice.z_default_format = "";
618 snotice.z_num_other_fields = 0;
619 snotice.z_default_format = "";
620 snotice.z_message = (server) ? server->addr_str : NULL;
621 snotice.z_message_len = (server) ? strlen(server->addr_str) + 1 : 0;
623 zdbug((LOG_DEBUG, "rlm_deathgram: suggesting %s to %s",
624 (server) ? server->addr_str : "nothing", realm->name));
627 if (!ticket_lookup(realm->name))
628 if ((retval = ticket_retrieve(realm)) != ZERR_NONE) {
629 syslog(LOG_WARNING, "rlm_deathgram failed: %s",
630 error_message(retval));
635 if ((retval = ZFormatNotice(&snotice, &pack, &packlen, ZCAUTH))
638 syslog(LOG_WARNING, "rlm_deathgram format: %s",
639 error_message(retval));
642 if ((retval = ZParseNotice(pack, packlen, &snotice)) != ZERR_NONE) {
643 syslog(LOG_WARNING, "rlm_deathgram parse: %s",
644 error_message(retval));
649 realm_handoff(&snotice, 1, NULL, realm, 0);
659 char rlm_recipient[REALM_SZ + 1];
661 for (jj = 1; jj < nservers; jj++) { /* skip limbo server */
662 if (jj != me_server_idx && otherservers[jj].state == SERV_UP)
666 if (nservers < 2 || !found) {
667 /* if we're the only server up, send a REALM_BOOT to one of their
669 for (realm = otherrealms, jj = 0; jj < nrealms; jj++, realm++) {
672 char rlm_recipient[REALM_SZ + 1];
675 memset (&snotice, 0, sizeof (snotice));
677 snotice.z_opcode = REALM_BOOT;
678 snotice.z_port = srv_addr.sin_port;
679 snotice.z_class_inst = ZEPHYR_CTL_REALM;
680 snotice.z_class = ZEPHYR_CTL_CLASS;
681 snotice.z_recipient = "";
682 snotice.z_kind = ACKED;
683 snotice.z_num_other_fields = 0;
684 snotice.z_default_format = "";
685 snotice.z_sender = myname; /* my host name */
686 sprintf(rlm_recipient, "@%s", realm->name);
687 snotice.z_recipient = rlm_recipient;
688 snotice.z_default_format = "";
689 snotice.z_message = NULL;
690 snotice.z_message_len = 0;
693 if (!ticket_lookup(realm->name))
694 if ((retval = ticket_retrieve(realm)) != ZERR_NONE) {
695 syslog(LOG_WARNING, "rlm_wakeup failed: %s",
696 error_message(retval));
701 if ((retval = ZFormatNotice(&snotice, &pack, &packlen, ZAUTH))
704 syslog(LOG_WARNING, "rlm_wakeup format: %s",
705 error_message(retval));
708 if ((retval = ZParseNotice(pack, packlen, &snotice))
710 syslog(LOG_WARNING, "rlm_wakeup parse: %s",
711 error_message(retval));
716 realm_handoff(&snotice, 1, NULL, realm, 0);
723 realm_ulocate_dispatch(notice, auth, who, server, realm)
726 struct sockaddr_in *who;
730 register char *opcode = notice->z_opcode;
734 syslog(LOG_WARNING, "unauth locate msg from %s (%s/%s/%s)",
735 inet_ntoa(who->sin_addr),
736 notice->z_class, notice->z_class_inst,
737 notice->z_opcode); /* XXX */
739 syslog(LOG_WARNING, "unauth locate msg from %s",
740 inet_ntoa(who->sin_addr));
742 clt_ack(notice, who, AUTH_FAILED);
746 if (!strcmp(opcode, REALM_REQ_LOCATE)) {
748 ulogin_realm_locate(notice, who, realm);
749 } else if (!strcmp(opcode, REALM_ANS_LOCATE)) {
751 ulogin_relay_locate(notice, who);
753 syslog(LOG_WARNING, "%s unknown/illegal loc opcode %s",
754 realm->name, opcode);
763 realm_control_dispatch(notice, auth, who, server, realm)
766 struct sockaddr_in *who;
770 register char *opcode = notice->z_opcode;
774 syslog(LOG_WARNING, "unauth ctl msg from %s (%s/%s/%s)",
775 inet_ntoa(who->sin_addr),
776 notice->z_class, notice->z_class_inst,
777 notice->z_opcode); /* XXX */
779 syslog(LOG_WARNING, "unauth ctl msg from %s",
780 inet_ntoa(who->sin_addr));
782 if (server == me_server)
783 clt_ack(notice, who, AUTH_FAILED);
787 if (strcmp(notice->z_class_inst, ZEPHYR_CTL_REALM)) {
788 syslog(LOG_WARNING, "Invalid rlm_dispatch instance %s",
789 notice->z_class_inst);
793 if (!strcmp(opcode, REALM_REQ_SUBSCRIBE) || !strcmp(opcode, REALM_ADD_SUBSCRIBE)) {
794 /* try to add subscriptions */
795 /* attempts to get defaults are ignored */
796 if ((status = subscr_foreign_user(notice, who, server, realm)) != ZERR_NONE) {
797 clt_ack(notice, who, AUTH_FAILED);
798 } else if (server == me_server) {
799 server_forward(notice, auth, who);
802 } else if (!strcmp(opcode, REALM_UNSUBSCRIBE)) {
803 /* try to remove subscriptions */
804 if ((status = subscr_realm_cancel(who, notice, realm)) != ZERR_NONE) {
805 clt_ack(notice, who, NOT_FOUND);
806 } else if (server == me_server) {
807 server_forward(notice, auth, who);
810 } else if (!strcmp(opcode, REALM_BOOT)) {
811 zdbug((LOG_DEBUG, "got a REALM_BOOT from %d (me %d)", server, me_server));
812 realm->state = REALM_STARTING;
813 realm_set_server(who, realm);
815 /* resend subscriptions but only if this was to us */
816 if (server == me_server) {
817 if ((status = subscr_realm_subs(realm)) != ZERR_NONE) {
818 clt_ack(notice, who, NOT_FOUND);
820 /* do forward the hint in case it ever matters */
821 server_forward(notice, auth, who);
826 } else if (!strcmp(opcode, SERVER_SHUTDOWN)) {
827 /* try to remove subscriptions */
828 if ((status = realm_new_server(who, notice, realm)) != ZERR_NONE) {
829 clt_ack(notice, who, NOT_FOUND);
830 } else if (server == me_server) {
831 server_forward(notice, auth, who);
835 syslog(LOG_WARNING, "%s unknown/illegal ctl opcode %s",
836 realm->name, opcode);
837 if (server == me_server)
845 realm_new_server(sin, notice, realm)
846 struct sockaddr_in *sin;
851 char suggested_server[MAXHOSTNAMELEN];
854 struct sockaddr_in sinaddr;
860 srvidx = realm_get_idx_by_addr(realm, sin);
861 zdbug((LOG_DEBUG, "rlm_new_srv: message from %d in %s (%s)",
862 srvidx, realm->name, inet_ntoa(sin->sin_addr)));
863 if (realm->idx == srvidx) {
864 if (notice->z_message_len) {
865 addr = inet_addr(notice->z_message);
866 sinaddr.sin_addr.s_addr = addr;
867 rlm = realm_which_realm(&sinaddr);
869 if (!rlm || (rlm != realm))
871 realm->idx = realm_get_idx_by_addr(realm, &sinaddr);
873 realm->idx = (realm->idx + 1) % realm->count;
875 zdbug((LOG_DEBUG, "rlm_new_srv: switched servers (%s)", inet_ntoa((realm->addrs[realm->idx]).sin_addr)));
877 zdbug((LOG_DEBUG, "rlm_new_srv: not switching servers (%s)", inet_ntoa((realm->addrs[realm->idx]).sin_addr)));
882 realm_set_server(sin, realm)
883 struct sockaddr_in *sin;
888 rlm = realm_which_realm(sin);
890 if (!rlm || (rlm != realm))
892 realm->idx = realm_get_idx_by_addr(realm, sin);
893 zdbug((LOG_DEBUG, "rlm_pick_srv: switched servers (%s)", inet_ntoa((realm->addrs[realm->idx]).sin_addr)));
897 realm_handoff(notice, auth, who, realm, ack_to_sender)
900 struct sockaddr_in *who;
908 zdbug((LOG_DEBUG, "realm_sendit unauthentic to realm %s",
910 realm_sendit(notice, who, auth, realm, ack_to_sender);
914 if (!ticket_lookup(realm->name))
915 if ((retval = ticket_retrieve(realm)) != ZERR_NONE) {
916 syslog(LOG_WARNING, "rlm_handoff failed: %s",
917 error_message(retval));
918 realm_sendit(notice, who, auth, realm, ack_to_sender);
922 zdbug((LOG_DEBUG, "realm_sendit to realm %s auth %d", realm->name, auth));
923 /* valid ticket available now, send the message */
924 retval = realm_sendit_auth(notice, who, auth, realm, ack_to_sender);
925 #else /* HAVE_KRB4 */
926 realm_sendit(notice, who, auth, realm, ack_to_sender);
927 #endif /* HAVE_KRB4 */
931 realm_sendit(notice, who, auth, realm, ack_to_sender)
933 struct sockaddr_in *who;
943 notice->z_auth = auth;
945 /* format the notice */
946 if ((retval = ZFormatRawNotice(notice, &pack, &packlen)) != ZERR_NONE) {
947 syslog(LOG_WARNING, "rlm_sendit format: %s",
948 error_message(retval));
953 if ((retval = ZSetDestAddr(&realm->addrs[realm->idx])) != ZERR_NONE) {
954 syslog(LOG_WARNING, "rlm_sendit set addr: %s",
955 error_message(retval));
959 if ((retval = ZSendPacket(pack, packlen, 0)) != ZERR_NONE) {
960 syslog(LOG_WARNING, "rlm_sendit xmit: %s", error_message(retval));
965 /* now we've sent it, mark it as not ack'ed */
967 if (!(nacked = (Unacked *)malloc(sizeof(Unacked)))) {
968 /* no space: just punt */
969 syslog(LOG_ERR, "rlm_sendit nack malloc");
974 nacked->client = NULL;
976 nacked->packet = pack;
977 nacked->dest.rlm.rlm_idx = realm - otherrealms;
978 nacked->dest.rlm.rlm_srv_idx = realm->idx;
979 nacked->packsz = packlen;
980 nacked->uid = notice->z_uid;
982 nacked->ack_addr = *who;
984 nacked->ack_addr.sin_addr.s_addr = 0;
986 /* set a timer to retransmit */
987 nacked->timer = timer_set_rel(rexmit_times[0], rlm_rexmit, nacked);
989 LIST_INSERT(&rlm_nacklist, nacked);
994 packet_ctl_nack(nackpacket)
999 /* extract the notice */
1000 ZParseNotice(nackpacket->packet, nackpacket->packsz, ¬ice);
1001 if (nackpacket->ack_addr.sin_addr.s_addr != 0)
1002 nack(¬ice, &nackpacket->ack_addr);
1005 syslog(LOG_WARNING, "would have acked nobody (%s/%s/%s)",
1006 notice.z_class, notice.z_class_inst, notice.z_opcode); /* XXX */
1014 Unacked *nackpacket = (Unacked *) arg;
1016 register ZRealm *realm;
1019 zdbug((LOG_DEBUG,"rlm_rexmit"));
1021 realm = &otherrealms[nackpacket->dest.rlm.rlm_idx];
1023 zdbug((LOG_DEBUG, "rlm_rexmit: sending to %s:%d (%d)",
1024 realm->name, realm->idx, nackpacket->rexmits));
1026 if (realm->count == 0)
1029 /* Check to see if we've retransmitted as many times as we can */
1030 if (nackpacket->rexmits >= (NUM_REXMIT_TIMES * realm->count)) {
1031 /* give a server ack that the packet is lost/realm dead */
1032 packet_ctl_nack(nackpacket);
1033 LIST_DELETE(nackpacket);
1035 zdbug((LOG_DEBUG, "rlm_rexmit: %s appears dead", realm->name));
1036 realm->state = REALM_DEAD;
1038 free(nackpacket->packet);
1043 /* if we've reached our limit, move on to the next server */
1044 if ((realm->state == REALM_TARDY) ||
1045 (nackpacket->rexmits &&
1046 !((nackpacket->rexmits+1) % (NUM_REXMIT_TIMES/3))))
1048 realm->idx = (realm->idx + 1) % realm->count;
1049 zdbug((LOG_DEBUG, "rlm_rexmit: %s switching servers:%d (%s)",
1050 realm->name, realm->idx,
1051 inet_ntoa((realm->addrs[realm->idx]).sin_addr)));
1054 /* throttle back if it looks like the realm is down */
1055 if ((realm->state != REALM_DEAD) ||
1056 ((nackpacket->rexmits % (realm->count+1)) == 1)) {
1057 /* do the retransmit */
1058 retval = ZSetDestAddr(&realm->addrs[realm->idx]);
1059 if (retval != ZERR_NONE) {
1060 syslog(LOG_WARNING, "rlm_rexmit set addr: %s",
1061 error_message(retval));
1063 retval = ZSendPacket(nackpacket->packet, nackpacket->packsz, 0);
1064 if (retval != ZERR_NONE)
1065 syslog(LOG_WARNING, "rlm_rexmit xmit: %s",
1066 error_message(retval));
1068 /* no per-server nack queues for foreign realms yet, doesn't matter */
1069 nackpacket->dest.rlm.rlm_srv_idx = realm->idx;
1070 zdbug((LOG_DEBUG, "rlm_rexmit(%s): send to %s", realm->name,
1071 inet_ntoa((realm->addrs[realm->idx]).sin_addr)));
1073 zdbug((LOG_DEBUG, "rlm_rexmit(%s): not sending to %s", realm->name,
1074 inet_ntoa((realm->addrs[realm->idx]).sin_addr)));
1077 /* reset the timer */
1078 nackpacket->rexmits++;
1080 timer_set_rel(rexmit_times[nackpacket->rexmits%NUM_REXMIT_TIMES],
1081 rlm_rexmit, nackpacket);
1082 if (rexmit_times[nackpacket->rexmits%NUM_REXMIT_TIMES] == -1)
1083 zdbug((LOG_DEBUG, "rlm_rexmit(%s): would send at -1 to %s",
1084 realm->name, inet_ntoa((realm->addrs[realm->idx]).sin_addr)));
1090 realm_dump_realms(fp)
1093 register int ii, jj;
1095 for (ii = 0; ii < nrealms; ii++) {
1096 (void) fprintf(fp, "%d:%s\n", ii, otherrealms[ii].name);
1097 for (jj = 0; jj < otherrealms[ii].count; jj++) {
1098 (void) fprintf(fp, "\t%s\n",
1099 inet_ntoa(otherrealms[ii].addrs[jj].sin_addr));
1102 subscr_dump_subs(fp, otherrealms[ii].subs);
1108 realm_sendit_auth(notice, who, auth, realm, ack_to_sender)
1111 struct sockaddr_in *who;
1117 int buffer_len, hdrlen, offset, fragsize, ret_len, message_len;
1118 int origoffset, origlen;
1121 char buf[1024], multi[64];
1122 ZNotice_t partnotice, newnotice;
1126 buffer = (char *) malloc(sizeof(ZPacket_t));
1128 syslog(LOG_ERR, "realm_sendit_auth malloc");
1129 return ENOMEM; /* DON'T put on nack list */
1132 buffer_len = sizeof(ZPacket_t);
1134 newnotice = *notice;
1137 retval = ZMakeZcodeRealmAuthentication(&newnotice, buffer, buffer_len,
1138 &hdrlen, realm->name);
1139 if (retval != ZERR_NONE) {
1140 syslog(LOG_WARNING, "rlm_sendit_auth set addr: %s",
1141 error_message(retval));
1145 /* set the dest addr */
1146 retval = ZSetDestAddr(&realm->addrs[realm->idx]);
1147 if (retval != ZERR_NONE) {
1148 syslog(LOG_WARNING, "rlm_sendit_auth set addr: %s",
1149 error_message(retval));
1153 /* This is not terribly pretty, but it does do its job.
1154 * If a packet we get that needs to get sent off to another realm is
1155 * too big after we slap on our authent, we refragment it further,
1156 * a la Z_SendFragmentedNotice. This obviates the need for what
1157 * used to be done in ZFormatAuthenticRealmNotice, as we do it here.
1158 * At some point it should be pulled back out into its own function,
1159 * but only the server uses it.
1162 if ((notice->z_message_len+hdrlen > buffer_len) ||
1163 (notice->z_message_len+hdrlen > Z_MAXPKTLEN)) {
1165 /* Reallocate buffers inside the refragmenter */
1168 partnotice = *notice;
1171 origlen = notice->z_message_len;
1173 if (notice->z_multinotice && strcmp(notice->z_multinotice, ""))
1174 if (sscanf(notice->z_multinotice, "%d/%d", &origoffset,
1176 syslog(LOG_WARNING, "rlm_sendit_auth frag: parse failed");
1177 return ZERR_BADFIELD;
1181 zdbug((LOG_DEBUG,"rlm_send_auth: orig: %d-%d/%d", origoffset,
1182 notice->z_message_len, origlen));
1185 fragsize = Z_MAXPKTLEN-hdrlen-Z_FRAGFUDGE;
1187 while (offset < notice->z_message_len || !notice->z_message_len) {
1188 (void) sprintf(multi, "%d/%d", offset+origoffset, origlen);
1189 partnotice.z_multinotice = multi;
1191 (void) Z_gettimeofday(&partnotice.z_uid.tv,
1192 (struct timezone *)0);
1193 partnotice.z_uid.tv.tv_sec = htonl((u_long)
1194 partnotice.z_uid.tv.tv_sec);
1195 partnotice.z_uid.tv.tv_usec =
1196 htonl((u_long) partnotice.z_uid.tv.tv_usec);
1197 (void) memcpy((char *)&partnotice.z_uid.zuid_addr, &__My_addr,
1200 message_len = min(notice->z_message_len-offset, fragsize);
1201 partnotice.z_message = notice->z_message+offset;
1202 partnotice.z_message_len = message_len;
1205 zdbug((LOG_DEBUG,"rlm_send_auth: new: %d-%d/%d",
1206 origoffset+offset, message_len, origlen));
1209 buffer = (char *) malloc(sizeof(ZPacket_t));
1211 syslog(LOG_ERR, "realm_sendit_auth malloc");
1212 return ENOMEM; /* DON'T put on nack list */
1215 buffer_len = sizeof(ZPacket_t);
1217 retval = ZMakeZcodeRealmAuthentication(&partnotice, buffer,
1218 buffer_len, &hdrlen,
1220 if (retval != ZERR_NONE) {
1221 syslog(LOG_WARNING, "rlm_sendit_auth set addr: %s",
1222 error_message(retval));
1227 ptr = buffer+hdrlen;
1229 (void) memcpy(ptr, partnotice.z_message, partnotice.z_message_len);
1231 buffer_len = hdrlen+partnotice.z_message_len;
1234 if ((retval = ZSendPacket(buffer, buffer_len, 0)) != ZERR_NONE) {
1235 syslog(LOG_WARNING, "rlm_sendit_auth xmit: %s",
1236 error_message(retval));
1241 if (!(nacked = (Unacked *)malloc(sizeof(Unacked)))) {
1242 /* no space: just punt */
1243 syslog(LOG_ERR, "rlm_sendit_auth nack malloc");
1248 nacked->rexmits = 0;
1249 nacked->packet = buffer;
1250 nacked->dest.rlm.rlm_idx = realm - otherrealms;
1251 nacked->dest.rlm.rlm_srv_idx = realm->idx;
1252 nacked->packsz = buffer_len;
1253 nacked->uid = partnotice.z_uid;
1255 /* Do the ack for the last frag, below */
1257 nacked->ack_addr = *who;
1259 nacked->ack_addr.sin_addr.s_addr = 0;
1261 /* set a timer to retransmit */
1262 nacked->timer = timer_set_rel(rexmit_times[0], rlm_rexmit, nacked);
1265 LIST_INSERT(&rlm_nacklist, nacked);
1269 if (!notice->z_message_len)
1274 /* This is easy, no further fragmentation needed */
1275 ptr = buffer+hdrlen;
1277 (void) memcpy(ptr, newnotice.z_message, newnotice.z_message_len);
1279 buffer_len = hdrlen+newnotice.z_message_len;
1282 if ((retval = ZSendPacket(buffer, buffer_len, 0)) != ZERR_NONE) {
1283 syslog(LOG_WARNING, "rlm_sendit_auth xmit: %s",
1284 error_message(retval));
1289 /* now we've sent it, mark it as not ack'ed */
1291 if (!(nacked = (Unacked *)malloc(sizeof(Unacked)))) {
1292 /* no space: just punt */
1293 syslog(LOG_ERR, "rlm_sendit_auth nack malloc");
1298 nacked->rexmits = 0;
1299 nacked->packet = buffer;
1300 nacked->dest.rlm.rlm_idx = realm - otherrealms;
1301 nacked->dest.rlm.rlm_srv_idx = realm->idx;
1302 nacked->packsz = buffer_len;
1303 nacked->uid = notice->z_uid;
1305 /* Do the ack for the last frag, below */
1307 nacked->ack_addr = *who;
1309 nacked->ack_addr.sin_addr.s_addr = 0;
1311 /* set a timer to retransmit */
1312 nacked->timer = timer_set_rel(rexmit_times[0], rlm_rexmit, nacked);
1314 LIST_INSERT(&rlm_nacklist, nacked);
1320 ticket_lookup(realm)
1323 krb5_error_code result;
1326 krb5_creds creds_in, *creds;
1328 result = krb5_cc_default(Z_krb5_ctx, &ccache);
1332 memset(&creds_in, 0, sizeof(creds_in));
1334 result = krb5_cc_get_principal(Z_krb5_ctx, ccache, &creds_in.client);
1336 krb5_cc_close(Z_krb5_ctx, ccache);
1340 result = krb5_build_principal(Z_krb5_ctx, &creds_in.server,
1343 SERVER_KRB5_SERVICE, SERVER_INSTANCE, 0);
1345 krb5_cc_close(Z_krb5_ctx, ccache);
1349 result = krb5_get_credentials(Z_krb5_ctx, 0 /* flags */, ccache,
1351 krb5_cc_close(Z_krb5_ctx, ccache);
1354 krb5_timeofday (Z_krb5_ctx, &sec);
1355 krb5_free_cred_contents(Z_krb5_ctx, &creds_in); /* hope this is OK */
1356 if ((result == 0) && (sec < creds->times.endtime)) {
1357 krb5_free_creds(Z_krb5_ctx, creds);
1360 if (!result) krb5_free_creds(Z_krb5_ctx, creds);
1366 ticket_retrieve(realm)
1371 krb5_error_code result;
1372 krb5_auth_context authctx;
1373 krb5_creds creds_in, *creds;
1377 if (realm->child_pid)
1378 /* Right idea. Basically, we haven't gotten it yet */
1379 return KRB5KRB_AP_ERR_TKT_EXPIRED;
1381 if (realm->have_tkt) {
1382 /* Get a pointer to the default ccache. We don't need to free this. */
1383 result = krb5_cc_default(Z_krb5_ctx, &ccache);
1385 /* GRRR. There's no allocator or constructor for krb5_creds */
1386 /* GRRR. It would be nice if this API were documented at all */
1387 memset(&creds_in, 0, sizeof(creds_in));
1390 result = krb5_cc_get_principal(Z_krb5_ctx, ccache, &creds_in.client);
1391 /* construct the service principal */
1393 result = krb5_build_principal(Z_krb5_ctx, &creds_in.server,
1394 strlen(realm->name), realm->name,
1395 SERVER_KRB5_SERVICE, SERVER_INSTANCE,
1398 /* HOLDING: creds_in.server */
1400 /* look up or get the credentials we need */
1402 result = krb5_get_credentials(Z_krb5_ctx, 0 /* flags */, ccache,
1404 krb5_cc_close(Z_krb5_ctx, ccache);
1405 krb5_free_cred_contents(Z_krb5_ctx, &creds_in); /* hope this is OK */
1407 krb5_free_creds(Z_krb5_ctx, creds);
1411 syslog(LOG_ERR, "tkt_rtrv: don't have ticket, but have no child");
1412 result = KRB5KRB_AP_ERR_TKT_EXPIRED;
1417 syslog(LOG_ERR, "tkt_rtrv: can't fork");
1418 return KRBET_KDC_AUTH_EXP;
1420 else if (pid == 0) {
1421 #ifdef _POSIX_VERSION
1422 struct sigaction action;
1424 action.sa_flags = 0;
1425 sigemptyset(&action.sa_mask);
1426 action.sa_handler = 0;
1427 sigaction(SIGCHLD, &action, NULL);
1428 sigaction(SIGINT, &action, NULL);
1429 sigaction(SIGTERM, &action, NULL);
1430 sigaction(SIGUSR1, &action, NULL);
1431 sigaction(SIGUSR2, &action, NULL);
1432 sigaction(SIGFPE, &action, NULL);
1433 sigaction(SIGHUP, &action, NULL);
1435 sigaction(SIGEMT, &action, NULL);
1438 signal(SIGCHLD, SIG_DFL);
1439 signal(SIGINT, SIG_DFL);
1440 signal(SIGTERM, SIG_DFL);
1441 signal(SIGUSR1, SIG_DFL);
1442 signal(SIGUSR2, SIG_DFL);
1443 signal(SIGFPE, SIG_DFL);
1444 signal(SIGHUP, SIG_DFL);
1446 signal(SIGEMT, SIG_DFL);
1450 syslog(LOG_INFO, "tkt_rtrv running for %s", realm->name);
1452 /* Get a pointer to the default ccache. We don't need to free this. */
1453 result = krb5_cc_default(Z_krb5_ctx, &ccache);
1455 /* GRRR. There's no allocator or constructor for krb5_creds */
1456 /* GRRR. It would be nice if this API were documented at all */
1457 memset(&creds_in, 0, sizeof(creds_in));
1460 result = krb5_cc_get_principal(Z_krb5_ctx, ccache, &creds_in.client);
1461 /* construct the service principal */
1463 result = krb5_build_principal(Z_krb5_ctx, &creds_in.server,
1464 strlen(realm->name), realm->name,
1465 SERVER_KRB5_SERVICE, SERVER_INSTANCE,
1468 /* HOLDING: creds_in.server */
1470 /* look up or get the credentials we need */
1472 result = krb5_get_credentials(Z_krb5_ctx, 0 /* flags */, ccache,
1474 krb5_cc_close(Z_krb5_ctx, ccache);
1475 krb5_free_cred_contents(Z_krb5_ctx, &creds_in); /* hope this is OK */
1477 krb5_free_creds(Z_krb5_ctx, creds);
1478 syslog(LOG_INFO, "tkt_rtrv succeeded for %s", realm->name);
1482 /* Sleep a little while before retrying */
1486 realm->child_pid = pid;
1487 realm->have_tkt = 0;
1489 syslog(LOG_WARNING, "tkt_rtrv: %s: %d", realm->name,
1494 #endif /* HAVE_KRB5 */