2 * realms.c Realm handling code
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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
20 * Copyright 2007 The FreeRADIUS server project
21 * Copyright 2007 Alan DeKok <aland@deployingradius.com>
24 #include <freeradius-devel/ident.h>
27 #include <freeradius-devel/radiusd.h>
28 #include <freeradius-devel/rad_assert.h>
35 static rbtree_t *realms_byname = NULL;
37 static rbtree_t *home_servers_byaddr = NULL;
38 static rbtree_t *home_servers_byname = NULL;
40 static rbtree_t *home_pools_byname = NULL;
42 static int realm_name_cmp(const void *one, const void *two)
47 return strcasecmp(a->name, b->name);
51 static int home_server_name_cmp(const void *one, const void *two)
53 const home_server *a = one;
54 const home_server *b = two;
56 if (a->type < b->type) return -1;
57 if (a->type > b->type) return +1;
59 return strcasecmp(a->name, b->name);
62 static int home_server_addr_cmp(const void *one, const void *two)
64 const home_server *a = one;
65 const home_server *b = two;
67 if (a->port < b->port) return -1;
68 if (a->port > b->port) return +1;
70 return lrad_ipaddr_cmp(&a->ipaddr, &b->ipaddr);
74 static int home_pool_name_cmp(const void *one, const void *two)
76 const home_pool_t *a = one;
77 const home_pool_t *b = two;
79 if (a->server_type < b->server_type) return -1;
80 if (a->server_type > b->server_type) return +1;
82 return strcasecmp(a->name, b->name);
86 void realms_free(void)
88 rbtree_free(home_servers_byname);
89 home_servers_byname = NULL;
91 rbtree_free(home_servers_byaddr);
92 home_servers_byaddr = NULL;
94 rbtree_free(home_pools_byname);
95 home_pools_byname = NULL;
97 rbtree_free(realms_byname);
102 int realms_init(const char *filename)
106 if (realms_byname) return 1;
108 realms_byname = rbtree_create(realm_name_cmp, free, 0);
109 if (!realms_byname) {
114 home_servers_byaddr = rbtree_create(home_server_addr_cmp, free, 0);
115 if (!home_servers_byaddr) {
120 home_servers_byname = rbtree_create(home_server_name_cmp, NULL, 0);
121 if (!home_servers_byname) {
126 home_pools_byname = rbtree_create(home_pool_name_cmp, free, 0);
127 if (!home_pools_byname) {
132 for (cs = cf_subsection_find_next(mainconfig.config, NULL, "realm");
134 cs = cf_subsection_find_next(mainconfig.config, cs, "realm")) {
135 if (!realm_add(filename, cs)) {
144 static struct in_addr hs_ip4addr;
145 static struct in6_addr hs_ip6addr;
146 static char *hs_type = NULL;
147 static char *hs_check = NULL;
149 static CONF_PARSER home_server_config[] = {
150 { "ipaddr", PW_TYPE_IPADDR,
151 0, &hs_ip4addr, NULL },
152 { "ipv6addr", PW_TYPE_IPV6ADDR,
153 0, &hs_ip6addr, NULL },
155 { "hostname", PW_TYPE_STRING_PTR,
156 offsetof(home_server,hostname), NULL, NULL},
157 { "port", PW_TYPE_INTEGER,
158 offsetof(home_server,port), NULL, "0" },
160 { "type", PW_TYPE_STRING_PTR,
163 { "secret", PW_TYPE_STRING_PTR,
164 offsetof(home_server,secret), NULL, NULL},
166 { "response_window", PW_TYPE_INTEGER,
167 offsetof(home_server,response_window), NULL, "30" },
168 { "max_outstanding", PW_TYPE_INTEGER,
169 offsetof(home_server,max_outstanding), NULL, "65536" },
171 { "zombie_period", PW_TYPE_INTEGER,
172 offsetof(home_server,zombie_period), NULL, "40" },
173 { "status_check", PW_TYPE_STRING_PTR,
174 0, &hs_check, "none" },
175 { "ping_check", PW_TYPE_STRING_PTR,
176 0, &hs_check, "none" },
178 { "ping_interval", PW_TYPE_INTEGER,
179 offsetof(home_server,ping_interval), NULL, "30" },
180 { "check_interval", PW_TYPE_INTEGER,
181 offsetof(home_server,ping_interval), NULL, "30" },
182 { "num_answers_to_alive", PW_TYPE_INTEGER,
183 offsetof(home_server,num_pings_to_alive), NULL, "3" },
184 { "num_pings_to_alive", PW_TYPE_INTEGER,
185 offsetof(home_server,num_pings_to_alive), NULL, "3" },
186 { "revive_interval", PW_TYPE_INTEGER,
187 offsetof(home_server,revive_interval), NULL, "300" },
188 { "status_check_timeout", PW_TYPE_INTEGER,
189 offsetof(home_server,ping_timeout), NULL, "4" },
191 { "username", PW_TYPE_STRING_PTR,
192 offsetof(home_server,ping_user_name), NULL, NULL},
193 { "password", PW_TYPE_STRING_PTR,
194 offsetof(home_server,ping_user_password), NULL, NULL},
196 { NULL, -1, 0, NULL, NULL } /* end the list */
201 static int home_server_add(const char *filename, CONF_SECTION *cs, int type)
207 name2 = cf_section_name1(cs);
208 if (!name2 || (strcasecmp(name2, "home_server") != 0)) {
209 radlog(L_ERR, "%s[%d]: Section is not a home_server.",
210 filename, cf_section_lineno(cs));
214 name2 = cf_section_name2(cs);
216 radlog(L_ERR, "%s[%d]: Home server section is missing a name.",
217 filename, cf_section_lineno(cs));
221 home = rad_malloc(sizeof(*home));
222 memset(home, 0, sizeof(*home));
226 memset(&hs_ip4addr, 0, sizeof(hs_ip4addr));
227 memset(&hs_ip6addr, 0, sizeof(hs_ip6addr));
228 cf_section_parse(cs, home, home_server_config);
230 if (!home->hostname && (htonl(hs_ip4addr.s_addr) == INADDR_NONE) &&
231 IN6_IS_ADDR_UNSPECIFIED(&hs_ip6addr)) {
232 radlog(L_ERR, "%s[%d]: No hostname, IPv4 address, or IPv6 address defined for home server %s.",
233 filename, cf_section_lineno(cs), name2);
243 * FIXME: Parse home->hostname!
245 * Right now, only ipaddr && ip6addr are used.
246 * The old-style parsing still allows hostnames.
248 if (htonl(hs_ip4addr.s_addr) != INADDR_NONE) {
249 home->ipaddr.af = AF_INET;
250 home->ipaddr.ipaddr.ip4addr = hs_ip4addr;
252 } else if (!IN6_IS_ADDR_UNSPECIFIED(&hs_ip6addr)) {
253 home->ipaddr.af = AF_INET6;
254 home->ipaddr.ipaddr.ip6addr = hs_ip6addr;
257 radlog(L_ERR, "%s[%d]: FIXME: parse hostname for home server %s.",
258 filename, cf_section_lineno(cs), name2);
267 if (!home->port || (home->port > 65535)) {
268 radlog(L_ERR, "%s[%d]: No port, or invalid port defined for home server %s.",
269 filename, cf_section_lineno(cs), name2);
279 radlog(L_ERR, "%s[%d]: Fatal error! Home server %s is ourselves!",
280 filename, cf_section_lineno(cs), name2);
289 if (strcasecmp(hs_type, "auth") == 0) {
290 home->type = HOME_TYPE_AUTH;
291 if (type != home->type) {
292 radlog(L_ERR, "%s[%d]: Server pool of \"acct\" servers cannot include home server %s of type \"auth\"",
293 filename, cf_section_lineno(cs), name2);
298 } else if (strcasecmp(hs_type, "acct") == 0) {
299 home->type = HOME_TYPE_ACCT;
300 if (type != home->type) {
301 radlog(L_ERR, "%s[%d]: Server pool of \"auth\" servers cannot include home server %s of type \"acct\"",
302 filename, cf_section_lineno(cs), name2);
307 } else if (strcasecmp(hs_type, "auth+acct") == 0) {
308 home->type = HOME_TYPE_AUTH;
312 radlog(L_ERR, "%s[%d]: Invalid type \"%s\" for home server %s.",
313 filename, cf_section_lineno(cs), hs_type, name2);
325 radlog(L_ERR, "%s[%d]: No shared secret defined for home server %s.",
326 filename, cf_section_lineno(cs), name2);
331 if (strcasecmp(hs_check, "none") == 0) {
332 home->ping_check = HOME_PING_CHECK_NONE;
334 } else if (strcasecmp(hs_check, "status-server") == 0) {
335 home->ping_check = HOME_PING_CHECK_STATUS_SERVER;
337 } else if (strcasecmp(hs_check, "request") == 0) {
338 home->ping_check = HOME_PING_CHECK_REQUEST;
341 radlog(L_ERR, "%s[%d]: Invalid ping_check \"%s\" for home server %s.",
342 filename, cf_section_lineno(cs), hs_check, name2);
351 if ((home->ping_check != HOME_PING_CHECK_NONE) &&
352 (home->ping_check != HOME_PING_CHECK_STATUS_SERVER)) {
353 if (!home->ping_user_name) {
354 radlog(L_INFO, "%s[%d]: You must supply a user name to enable ping checks",
355 filename, cf_section_lineno(cs));
360 if ((home->type == HOME_TYPE_AUTH) &&
361 !home->ping_user_password) {
362 radlog(L_INFO, "%s[%d]: You must supply a password to enable ping checks",
363 filename, cf_section_lineno(cs));
369 if (rbtree_finddata(home_servers_byaddr, home)) {
370 radlog(L_INFO, "%s[%d]: Ignoring duplicate home server %s.",
371 filename, cf_section_lineno(cs), name2);
375 if (!rbtree_insert(home_servers_byname, home)) {
376 radlog(L_ERR, "%s[%d]: Internal error adding home server %s.",
377 filename, cf_section_lineno(cs), name2);
382 if (!rbtree_insert(home_servers_byaddr, home)) {
383 rbtree_deletebydata(home_servers_byname, home);
384 radlog(L_ERR, "%s[%d]: Internal error adding home server %s.",
385 filename, cf_section_lineno(cs), name2);
390 if (home->response_window < 5) home->response_window = 5;
391 if (home->response_window > 60) home->response_window = 60;
393 if (home->max_outstanding < 8) home->max_outstanding = 8;
394 if (home->max_outstanding > 65536*16) home->max_outstanding = 65536*16;
396 if (home->ping_interval < 6) home->ping_interval = 6;
397 if (home->ping_interval > 120) home->ping_interval = 120;
399 if (home->zombie_period < 20) home->zombie_period = 20;
400 if (home->zombie_period > 120) home->zombie_period = 120;
402 if (home->zombie_period < home->response_window) {
403 home->zombie_period = home->response_window;
406 if (home->num_pings_to_alive < 3) home->num_pings_to_alive = 3;
407 if (home->num_pings_to_alive > 10) home->num_pings_to_alive = 10;
409 if (home->ping_timeout < 3) home->ping_timeout = 3;
410 if (home->ping_timeout > 10) home->ping_timeout = 10;
412 if (home->revive_interval < 60) home->revive_interval = 60;
413 if (home->revive_interval > 3600) home->revive_interval = 3600;
416 home_server *home2 = rad_malloc(sizeof(*home2));
418 memcpy(home2, home, sizeof(*home2));
420 home2->type = HOME_TYPE_ACCT;
422 home2->ping_user_password = NULL;
424 if (!rbtree_insert(home_servers_byname, home2)) {
425 radlog(L_ERR, "%s[%d]: Internal error adding home server %s.",
426 filename, cf_section_lineno(cs), name2);
431 if (!rbtree_insert(home_servers_byaddr, home2)) {
432 rbtree_deletebydata(home_servers_byname, home2);
433 radlog(L_ERR, "%s[%d]: Internal error adding home server %s.",
434 filename, cf_section_lineno(cs), name2);
444 static int server_pool_add(const char *filename, CONF_SECTION *cs,
448 home_pool_t *pool = NULL;
451 int num_home_servers;
453 name2 = cf_section_name1(cs);
454 if (!name2 || (strcasecmp(name2, "server_pool") != 0)) {
455 radlog(L_ERR, "%s[%d]: Section is not a server_pool.",
456 filename, cf_section_lineno(cs));
460 name2 = cf_section_name2(cs);
462 radlog(L_ERR, "%s[%d]: Server pool section is missing a name.",
463 filename, cf_section_lineno(cs));
468 * Count the home servers and initalize them.
470 num_home_servers = 0;
471 for (cp = cf_pair_find(cs, "home_server");
473 cp = cf_pair_find_next(cs, cp, "home_server")) {
474 home_server myhome, *home;
475 CONF_SECTION *server_cs;
479 value = cf_pair_value(cp);
481 radlog(L_ERR, "%s[%d]: No value given for home_server.",
482 filename, cf_pair_lineno(cp));
487 myhome.type = server_type;
488 home = rbtree_finddata(home_servers_byname, &myhome);
491 server_cs = cf_section_sub_find_name2(NULL,
495 radlog(L_ERR, "%s[%d]: Unknown home_server \"%s\".",
496 filename, cf_pair_lineno(cp), value);
500 if (!home_server_add(filename, server_cs, server_type)) {
504 home = rbtree_finddata(home_servers_byname, &myhome);
506 radlog(L_ERR, "Internal sanity check failed %d",
512 if (num_home_servers == 0) {
513 radlog(L_ERR, "%s[%d]: No home servers defined in pool %s",
514 filename, cf_section_lineno(cs), name2);
518 pool = rad_malloc(sizeof(*pool) + num_home_servers * sizeof(pool->servers[0]));
519 memset(pool, 0, sizeof(*pool) + num_home_servers * sizeof(pool->servers[0]));
521 pool->type = HOME_POOL_FAIL_OVER;
523 pool->server_type = server_type;
525 DEBUG2(" server_pool %s {", name2);
527 cp = cf_pair_find(cs, "type");
529 static LRAD_NAME_NUMBER pool_types[] = {
530 { "load-balance", HOME_POOL_LOAD_BALANCE },
531 { "fail-over", HOME_POOL_FAIL_OVER },
532 { "round_robin", HOME_POOL_LOAD_BALANCE },
533 { "fail_over", HOME_POOL_FAIL_OVER },
534 { "client-balance", HOME_POOL_CLIENT_BALANCE },
535 { "client-port-balance", HOME_POOL_CLIENT_PORT_BALANCE },
539 value = cf_pair_value(cp);
541 radlog(L_ERR, "%s[%d]: No value given for type.",
542 filename, cf_pair_lineno(cp));
546 pool->type = lrad_str2int(pool_types, value, 0);
548 radlog(L_ERR, "%s[%d]: Unknown type \"%s\".",
549 filename, cf_pair_lineno(cp), value);
553 DEBUG2("\ttype = %s", value);
556 for (cp = cf_pair_find(cs, "home_server");
558 cp = cf_pair_find_next(cs, cp, "home_server")) {
559 home_server myhome, *home;
561 value = cf_pair_value(cp);
563 radlog(L_ERR, "%s[%d]: No value given for home_server.",
564 filename, cf_pair_lineno(cp));
569 myhome.type = server_type;
571 home = rbtree_finddata(home_servers_byname, &myhome);
573 DEBUG2("Internal sanity check failed");
578 DEBUG2("Warning: Duplicate home server %s in server pool %s", home->name, pool->name);
582 DEBUG2("\thome_server = %s", home->name);
583 pool->servers[pool->num_home_servers] = home;
584 pool->num_home_servers++;
585 } /* loop over home_server's */
587 if (!rbtree_insert(home_pools_byname, pool)) {
588 rad_assert("Internal sanity check failed");
594 rad_assert(pool->server_type != 0);
605 static int old_server_add(const char *filename, int lineno, const char *realm,
606 const char *name, const char *secret,
607 home_pool_type_t ldflag, home_pool_t **pool_p,
610 int i, insert_point, num_home_servers;
611 home_server myhome, *home;
612 home_pool_t mypool, *pool;
616 * LOCAL realms get sanity checked, and nothing else happens.
618 if (strcmp(name, "LOCAL") == 0) {
620 radlog(L_ERR, "%s[%d]: Realm \"%s\" cannot be both LOCAL and remote", filename, lineno, name);
627 mypool.server_type = type;
628 pool = rbtree_finddata(home_pools_byname, &mypool);
630 if (pool->type != ldflag) {
631 radlog(L_ERR, "%s[%d]: Inconsistent ldflag for server pool \"%s\"", filename, lineno, name);
635 if (pool->server_type != type) {
636 radlog(L_ERR, "%s[%d]: Inconsistent home server type for server pool \"%s\"", filename, lineno, name);
643 home = rbtree_finddata(home_servers_byname, &myhome);
645 if (strcmp(home->secret, secret) != 0) {
646 radlog(L_ERR, "%s[%d]: Inconsistent shared secret for home server \"%s\"", filename, lineno, name);
650 if (home->type != type) {
651 radlog(L_ERR, "%s[%d]: Inconsistent type for home server \"%s\"", filename, lineno, name);
656 * See if the home server is already listed
657 * in the pool. If so, do nothing else.
659 if (pool) for (i = 0; i < pool->num_home_servers; i++) {
660 if (pool->servers[i] == home) {
667 * If we do have a pool, check that there is room to
668 * insert the home server we've found, or the one that we
671 * Note that we insert it into the LAST available
672 * position, in order to maintain the same order as in
673 * the configuration files.
677 for (i = pool->num_home_servers - 1; i >= 0; i--) {
678 if (pool->servers[i]) break;
680 if (!pool->servers[i]) {
685 if (insert_point < 0) {
686 radlog(L_ERR, "%s[%d]: No room in pool to add home server \"%s\". Please update the realm configuration to use the new-style home servers and server pools.", filename, lineno, name);
692 * No home server, allocate one.
698 home = rad_malloc(sizeof(*home));
699 memset(home, 0, sizeof(*home));
702 home->hostname = name;
704 home->secret = secret;
706 p = strchr(name, ':');
708 if (type == HOME_TYPE_AUTH) {
709 home->port = PW_AUTH_UDP_PORT;
711 home->port = PW_ACCT_UDP_PORT;
717 } else if (p == name) {
718 radlog(L_ERR, "%s[%d]: Invalid hostname %s.",
719 filename, lineno, name);
724 home->port = atoi(p + 1);
725 if ((home->port == 0) || (home->port > 65535)) {
726 radlog(L_ERR, "%s[%d]: Invalid port %s.",
727 filename, lineno, p + 1);
732 q = rad_malloc((p - name) + 1);
733 memcpy(q, name, (p - name));
738 if (ip_hton(p, AF_UNSPEC, &home->ipaddr) < 0) {
739 radlog(L_ERR, "%s[%d]: Failed looking up hostname %s.",
740 filename, lineno, p);
748 * Use the old-style configuration.
750 home->max_outstanding = 65535*16;
751 home->zombie_period = mainconfig.proxy_retry_delay * mainconfig.proxy_retry_count;
752 if (home->zombie_period == 0) home->zombie_period =30;
753 home->response_window = home->zombie_period - 1;
755 home->ping_check = HOME_PING_CHECK_NONE;
757 home->revive_interval = mainconfig.proxy_dead_time;
759 if (rbtree_finddata(home_servers_byaddr, home)) {
760 radlog(L_ERR, "%s[%d]: Home server %s has the same IP address as another home server.",
761 filename, lineno, name);
766 if (!rbtree_insert(home_servers_byname, home)) {
767 radlog(L_ERR, "%s[%d]: Internal error adding home server %s.",
768 filename, lineno, name);
773 if (!rbtree_insert(home_servers_byaddr, home)) {
774 rbtree_deletebydata(home_servers_byname, home);
775 radlog(L_ERR, "%s[%d]: Internal error adding home server %s.",
776 filename, lineno, name);
783 * We now have a home server, see if we can insert it
784 * into pre-existing pool.
786 if (insert_point >= 0) {
787 rad_assert(pool != NULL);
788 pool->servers[insert_point] = home;
792 rad_assert(pool == NULL);
793 rad_assert(home != NULL);
796 * Count the old-style realms of this name.
798 num_home_servers = 0;
799 for (cs = cf_section_sub_find_name2(mainconfig.config, "realm", realm);
801 cs = cf_section_sub_find_name2(cs, "realm", realm)) {
805 pool = rad_malloc(sizeof(*pool) + num_home_servers * sizeof(pool->servers[0]));
806 memset(pool, 0, sizeof(*pool) + num_home_servers * sizeof(pool->servers[0]));
810 pool->server_type = type;
811 pool->num_home_servers = num_home_servers;
812 pool->servers[0] = home;
814 if (!rbtree_insert(home_pools_byname, pool)) {
815 rad_assert("Internal sanity check failed");
824 static int old_realm_config(const char *filename, CONF_SECTION *cs, REALM *r)
828 home_pool_type_t ldflag;
830 secret = cf_section_value_find(cs, "secret");
832 host = cf_section_value_find(cs, "ldflag");
834 (strcasecmp(host, "fail_over") == 0)) {
835 ldflag = HOME_POOL_FAIL_OVER;
836 DEBUG2("\tldflag = fail_over");
838 } else if (strcasecmp(host, "round_robin") == 0) {
839 ldflag = HOME_POOL_LOAD_BALANCE;
840 DEBUG2("\tldflag = round_robin");
843 radlog(L_ERR, "%s[%d]: Unknown value \"%s\" for ldflag",
844 filename, cf_section_lineno(cs), host);
849 * Allow old-style if it doesn't exist, or if it exists and
852 if (((host = cf_section_value_find(cs, "authhost")) != NULL) &&
853 (strcmp(host, "LOCAL") != 0)) {
855 radlog(L_ERR, "%s[%d]: No shared secret supplied for realm: %s",
856 filename, cf_section_lineno(cs), r->name);
860 DEBUG2("\tauthhost = %s", host);
862 if (!old_server_add(filename, cf_section_lineno(cs),
863 r->name, host, secret, ldflag,
864 &r->auth_pool, HOME_TYPE_AUTH)) {
869 if (((host = cf_section_value_find(cs, "accthost")) != NULL) &&
870 (strcmp(host, "LOCAL") != 0)) {
872 radlog(L_ERR, "%s[%d]: No shared secret supplied for realm: %s",
873 filename, cf_section_lineno(cs), r->name);
877 DEBUG2("\taccthost = %s", host);
879 if (!old_server_add(filename, cf_section_lineno(cs),
880 r->name, host, secret, ldflag,
881 &r->acct_pool, HOME_TYPE_ACCT)) {
886 if (secret) DEBUG2("\tsecret = %s", secret);
893 static int add_pool_to_realm(const char *filename, int lineno,
894 const char *name, home_pool_t **dest,
897 home_pool_t mypool, *pool;
900 mypool.server_type = server_type;
902 pool = rbtree_finddata(home_pools_byname, &mypool);
904 CONF_SECTION *pool_cs;
906 pool_cs = cf_section_sub_find_name2(NULL, "server_pool",
909 radlog(L_ERR, "%s[%d]: Failed to find server_pool \"%s\"",
910 filename, lineno, name);
914 if (!server_pool_add(filename, pool_cs, server_type)) {
918 pool = rbtree_finddata(home_pools_byname, &mypool);
920 radlog(L_ERR, "Internal sanity check failed in add_pool_to_realm");
925 if (pool->server_type != server_type) {
926 radlog(L_ERR, "%s[%d]: Incompatible server_pool \"%s\" (mixed auth_pool / acct_pool)",
927 filename, lineno, name);
936 int realm_add(const char *filename, CONF_SECTION *cs)
941 home_pool_t *auth_pool, *acct_pool;
942 const char *auth_pool_name, *acct_pool_name;
944 name2 = cf_section_name1(cs);
945 if (!name2 || (strcasecmp(name2, "realm") != 0)) {
946 radlog(L_ERR, "%s[%d]: Section is not a realm.",
947 filename, cf_section_lineno(cs));
951 name2 = cf_section_name2(cs);
953 radlog(L_ERR, "%s[%d]: Realm section is missing the realm name.",
954 filename, cf_section_lineno(cs));
958 auth_pool = acct_pool = NULL;
959 auth_pool_name = acct_pool_name = NULL;
962 * Prefer new configuration to old one.
964 cp = cf_pair_find(cs, "pool");
965 if (cp) auth_pool_name = cf_pair_value(cp);
966 if (cp && auth_pool_name) {
967 acct_pool_name = auth_pool_name;
968 if (!add_pool_to_realm(filename, cf_pair_lineno(cp),
969 auth_pool_name, &auth_pool,
973 if (!add_pool_to_realm(filename, cf_pair_lineno(cp),
974 auth_pool_name, &acct_pool,
980 cp = cf_pair_find(cs, "auth_pool");
981 if (cp) auth_pool_name = cf_pair_value(cp);
982 if (cp && auth_pool_name) {
984 radlog(L_ERR, "%s[%d]: Cannot use \"pool\" and \"auth_pool\" at the same time.",
985 filename, cf_section_lineno(cs));
988 if (!add_pool_to_realm(filename, cf_pair_lineno(cp),
989 auth_pool_name, &auth_pool,
995 cp = cf_pair_find(cs, "acct_pool");
996 if (cp) acct_pool_name = cf_pair_value(cp);
997 if (cp && acct_pool_name) {
999 radlog(L_ERR, "%s[%d]: Cannot use \"pool\" and \"acct_pool\" at the same time.",
1000 filename, cf_section_lineno(cs));
1003 if (!add_pool_to_realm(filename, cf_pair_lineno(cp),
1004 acct_pool_name, &acct_pool,
1010 DEBUG2(" realm %s {", name2);
1013 * The realm MAY already exist if it's an old-style realm.
1014 * In that case, merge the old-style realm with this one.
1016 r = realm_find(name2);
1018 if (cf_pair_find(cs, "auth_pool") ||
1019 cf_pair_find(cs, "acct_pool")) {
1020 radlog(L_ERR, "%s[%d]: Duplicate realm \"%s\"",
1021 filename, cf_section_lineno(cs), name2);
1025 if (!old_realm_config(filename, cs, r)) {
1029 DEBUG2(" } # realm %s", name2);
1033 r = rad_malloc(sizeof(*r));
1034 memset(r, 0, sizeof(*r));
1037 r->auth_pool = auth_pool;
1038 r->acct_pool = acct_pool;
1041 if (auth_pool_name == acct_pool_name) { /* yes, ptr comparison */
1042 DEBUG2("\tpool = %s", auth_pool_name);
1044 if (auth_pool_name) DEBUG2("\tauth_pool = %s", auth_pool_name);
1045 if (acct_pool_name) DEBUG2("\tacct_pool = %s", acct_pool_name);
1048 if ((cf_section_value_find(cs, "nostrip")) != NULL) {
1050 DEBUG2("\tnostrip");
1054 * We're a new-style realm. Complain if we see the old
1057 if (r->auth_pool || r->acct_pool) {
1058 if (((cp = cf_pair_find(cs, "authhost")) != NULL) ||
1059 ((cp = cf_pair_find(cs, "accthost")) != NULL) ||
1060 ((cp = cf_pair_find(cs, "secret")) != NULL) ||
1061 ((cp = cf_pair_find(cs, "ldflag")) != NULL)) {
1062 DEBUG2("WARNING: Ignoring old-style configuration entry \"%s\" in realm \"%s\"", cf_pair_attr(cp), r->name);
1067 * The realm MAY be an old-style realm, as there
1068 * was no auth_pool or acct_pool. Double-check
1069 * it, just to be safe.
1071 } else if (!old_realm_config(filename, cs, r)) {
1075 if (!rbtree_insert(realms_byname, r)) {
1076 rad_assert("Internal sanity check failed");
1085 DEBUG2(" } # realm %s", name2);
1092 * Find a realm in the REALM list.
1094 REALM *realm_find(const char *name)
1098 if (!name) name = "NULL";
1100 myrealm.name = name;
1101 return rbtree_finddata(realms_byname, &myrealm);
1105 home_server *home_server_ldb(const char *realmname,
1106 home_pool_t *pool, REQUEST *request)
1110 home_server *found = NULL;
1115 * Determine how to pick choose the home server.
1117 switch (pool->type) {
1121 * For load-balancing by client IP address, we
1122 * pick a home server by hashing the client IP.
1124 * This isn't as even a load distribution as
1125 * tracking the State attribute, but it's better
1128 case HOME_POOL_CLIENT_BALANCE:
1129 switch (request->packet->src_ipaddr.af) {
1131 hash = lrad_hash(&request->packet->src_ipaddr.ipaddr.ip4addr,
1132 sizeof(request->packet->src_ipaddr.ipaddr.ip4addr));
1135 hash = lrad_hash(&request->packet->src_ipaddr.ipaddr.ip6addr,
1136 sizeof(request->packet->src_ipaddr.ipaddr.ip6addr));
1142 start = hash % pool->num_home_servers;
1145 case HOME_POOL_CLIENT_PORT_BALANCE:
1146 switch (request->packet->src_ipaddr.af) {
1148 hash = lrad_hash(&request->packet->src_ipaddr.ipaddr.ip4addr,
1149 sizeof(request->packet->src_ipaddr.ipaddr.ip4addr));
1152 hash = lrad_hash(&request->packet->src_ipaddr.ipaddr.ip6addr,
1153 sizeof(request->packet->src_ipaddr.ipaddr.ip6addr));
1159 lrad_hash_update(&request->packet->src_port,
1160 sizeof(request->packet->src_port), hash);
1161 start = hash % pool->num_home_servers;
1164 case HOME_POOL_LOAD_BALANCE:
1165 found = pool->servers[0];
1173 * Starting with the home server we chose, loop through
1174 * all home servers. If the current one is dead, skip
1175 * it. If it is too busy, skip it.
1177 * Otherwise, use it.
1179 for (count = 0; count < pool->num_home_servers; count++) {
1180 home_server *home = pool->servers[(start + count) % pool->num_home_servers];
1182 if (home->state == HOME_STATE_IS_DEAD) {
1187 * This home server is too busy. Choose another one.
1189 if (home->currently_outstanding >= home->max_outstanding) {
1193 if (pool->type != HOME_POOL_LOAD_BALANCE) {
1197 DEBUG3("PROXY %s %d\t%s %d",
1198 found->name, found->currently_outstanding,
1199 home->name, home->currently_outstanding);
1202 * Prefer this server if it's less busy than the
1203 * one we previously found.
1205 if (home->currently_outstanding < found->currently_outstanding) {
1206 DEBUG3("Choosing %s: It's less busy than %s",
1207 home->name, found->name);
1213 * Ignore servers which are busier than the one
1216 if (home->currently_outstanding > found->currently_outstanding) {
1217 DEBUG3("Skipping %s: It's busier than %s",
1218 home->name, found->name);
1223 * From the list of servers which have the same
1224 * load, choose one at random.
1226 if (((count + 1) * (lrad_rand() & 0xffff)) < (uint32_t) 0x10000) {
1230 } /* loop over the home servers */
1232 if (found) return found;
1235 * No live match found, and no fallback to the "DEFAULT"
1236 * realm. We fix this by blindly marking all servers as
1237 * "live". But only do it for ones that don't support
1238 * "pings", as they will be marked live when they
1239 * actually are live.
1241 if (!mainconfig.proxy_fallback &&
1242 mainconfig.wake_all_if_all_dead) {
1243 home_server *lb = NULL;
1245 for (count = 0; count < pool->num_home_servers; count++) {
1246 home_server *home = pool->servers[count];
1248 if ((home->state == HOME_STATE_IS_DEAD) &&
1249 (home->ping_check == HOME_PING_CHECK_NONE)) {
1250 home->state = HOME_STATE_ALIVE;
1259 * Still nothing. Look up the DEFAULT realm, but only
1260 * if we weren't looking up the NULL or DEFAULT realms.
1262 if (mainconfig.proxy_fallback &&
1264 (strcmp(realmname, "NULL") != 0) &&
1265 (strcmp(realmname, "DEFAULT") != 0)) {
1266 REALM *rd = realm_find("DEFAULT");
1268 if (!rd) return NULL;
1271 if (request->packet->code == PW_AUTHENTICATION_REQUEST) {
1272 pool = rd->auth_pool;
1274 } else if (request->packet->code == PW_ACCOUNTING_REQUEST) {
1275 pool = rd->acct_pool;
1277 if (!pool) return NULL;
1279 DEBUG2(" Realm %s has no live home servers. Falling back to the DEFAULT realm.", realmname);
1280 return home_server_ldb(rd->name, pool, request);
1284 * Still haven't found anything. Oh well.
1290 home_server *home_server_find(lrad_ipaddr_t *ipaddr, int port)
1294 myhome.ipaddr = *ipaddr;
1297 return rbtree_finddata(home_servers_byaddr, &myhome);