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>
26 #include <freeradius-devel/radiusd.h>
27 #include <freeradius-devel/rad_assert.h>
34 static rbtree_t *realms_byname = NULL;
37 typedef struct realm_regex_t {
39 struct realm_regex_t *next;
42 static realm_regex_t *realms_regex = NULL;
44 #endif /* HAVE_REGEX_H */
46 typedef struct realm_config_t {
53 bool wake_all_if_all_dead;
56 static realm_config_t *realm_config = NULL;
57 static bool realms_initialized = false;
60 static rbtree_t *home_servers_byaddr = NULL;
61 static rbtree_t *home_servers_byname = NULL;
63 static int home_server_max_number = 0;
64 static rbtree_t *home_servers_bynumber = NULL;
67 static rbtree_t *home_pools_byname = NULL;
70 * Map the proxy server configuration parameters to variables.
72 static const CONF_PARSER proxy_config[] = {
73 { "retry_delay", FR_CONF_OFFSET(PW_TYPE_INTEGER, realm_config_t, retry_delay), STRINGIFY(RETRY_DELAY) },
75 { "retry_count", FR_CONF_OFFSET(PW_TYPE_INTEGER, realm_config_t, retry_count), STRINGIFY(RETRY_COUNT) },
77 { "default_fallback", FR_CONF_OFFSET(PW_TYPE_BOOLEAN, realm_config_t, fallback), "no" },
79 { "dynamic", FR_CONF_OFFSET(PW_TYPE_BOOLEAN, realm_config_t, dynamic), NULL },
81 { "dead_time", FR_CONF_OFFSET(PW_TYPE_INTEGER, realm_config_t, dead_time), STRINGIFY(DEAD_TIME) },
83 { "wake_all_if_all_dead", FR_CONF_OFFSET(PW_TYPE_BOOLEAN, realm_config_t, wake_all_if_all_dead), "no" },
85 { NULL, -1, 0, NULL, NULL }
89 static int realm_name_cmp(void const *one, void const *two)
94 return strcasecmp(a->name, b->name);
99 static void home_server_free(void *data)
101 home_server_t *home = data;
106 static int home_server_name_cmp(void const *one, void const *two)
108 home_server_t const *a = one;
109 home_server_t const *b = two;
111 if (a->type < b->type) return -1;
112 if (a->type > b->type) return +1;
114 return strcasecmp(a->name, b->name);
117 static int home_server_addr_cmp(void const *one, void const *two)
120 home_server_t const *a = one;
121 home_server_t const *b = two;
123 if (a->server && !b->server) return -1;
124 if (!a->server && b->server) return +1;
125 if (a->server && b->server) {
126 rcode = a->type - b->type;
127 if (rcode != 0) return rcode;
128 return strcmp(a->server, b->server);
131 if (a->port < b->port) return -1;
132 if (a->port > b->port) return +1;
135 if (a->proto < b->proto) return -1;
136 if (a->proto > b->proto) return +1;
139 rcode = fr_ipaddr_cmp(&a->src_ipaddr, &b->src_ipaddr);
140 if (rcode != 0) return rcode;
142 return fr_ipaddr_cmp(&a->ipaddr, &b->ipaddr);
146 static int home_server_number_cmp(void const *one, void const *two)
148 home_server_t const *a = one;
149 home_server_t const *b = two;
151 return (a->number - b->number);
155 static int home_pool_name_cmp(void const *one, void const *two)
157 home_pool_t const *a = one;
158 home_pool_t const *b = two;
160 if (a->server_type < b->server_type) return -1;
161 if (a->server_type > b->server_type) return +1;
163 return strcasecmp(a->name, b->name);
167 static size_t CC_HINT(nonnull) xlat_cs(CONF_SECTION *cs, char const *fmt, char *out, size_t outlen)
169 char const *value = NULL;
174 if (strcmp(fmt, "instance") == 0) {
175 value = cf_section_name2(cs);
183 cp = cf_pair_find(cs, fmt);
184 if (!cp || !(value = cf_pair_value(cp))) {
190 strlcpy(out, value, outlen);
197 * Xlat for %{home_server:foo}
199 static ssize_t CC_HINT(nonnull) xlat_home_server(UNUSED void *instance, REQUEST *request,
200 char const *fmt, char *out, size_t outlen)
202 if (!request->home_server) {
203 RWDEBUG("No home_server associated with this request");
209 return xlat_cs(request->home_server->cs, fmt, out, outlen);
214 * Xlat for %{home_server_pool:foo}
216 static ssize_t CC_HINT(nonnull) xlat_server_pool(UNUSED void *instance, REQUEST *request,
217 char const *fmt, char *out, size_t outlen)
219 if (!request->home_pool) {
220 RWDEBUG("No home_pool associated with this request");
226 return xlat_cs(request->home_pool->cs, fmt, out, outlen);
230 void realms_free(void)
234 rbtree_free(home_servers_bynumber);
235 home_servers_bynumber = NULL;
238 rbtree_free(home_servers_byname);
239 home_servers_byname = NULL;
241 rbtree_free(home_servers_byaddr);
242 home_servers_byaddr = NULL;
244 rbtree_free(home_pools_byname);
245 home_pools_byname = NULL;
248 rbtree_free(realms_byname);
249 realms_byname = NULL;
253 realm_regex_t *this, *next;
255 for (this = realms_regex; this != NULL; this = next) {
264 talloc_free(realm_config);
270 static CONF_PARSER limit_config[] = {
271 { "max_connections", FR_CONF_OFFSET(PW_TYPE_INTEGER, home_server_t, limit.max_connections), "16" },
272 { "max_requests", FR_CONF_OFFSET(PW_TYPE_INTEGER, home_server_t, limit.max_requests), "0" },
273 { "lifetime", FR_CONF_OFFSET(PW_TYPE_INTEGER, home_server_t, limit.lifetime), "0" },
274 { "idle_timeout", FR_CONF_OFFSET(PW_TYPE_INTEGER, home_server_t, limit.idle_timeout), "0" },
276 { NULL, -1, 0, NULL, NULL } /* end the list */
279 static fr_ipaddr_t hs_ipaddr;
280 static char const *hs_srcipaddr = NULL;
281 static char const *hs_type = NULL;
282 static char const *hs_check = NULL;
283 static char const *hs_virtual_server = NULL;
285 static char const *hs_proto = NULL;
289 static CONF_PARSER home_server_coa[] = {
290 { "irt", FR_CONF_OFFSET(PW_TYPE_INTEGER, home_server_t, coa_irt), STRINGIFY(2) },
291 { "mrt", FR_CONF_OFFSET(PW_TYPE_INTEGER, home_server_t, coa_mrt), STRINGIFY(16) },
292 { "mrc", FR_CONF_OFFSET(PW_TYPE_INTEGER, home_server_t, coa_mrc), STRINGIFY(5) },
293 { "mrd", FR_CONF_OFFSET(PW_TYPE_INTEGER, home_server_t, coa_mrd), STRINGIFY(30) },
295 { NULL, -1, 0, NULL, NULL } /* end the list */
299 static CONF_PARSER home_server_config[] = {
300 { "ipaddr", FR_CONF_POINTER(PW_TYPE_IP_ADDR, &hs_ipaddr), NULL },
301 { "ipv4addr", FR_CONF_POINTER(PW_TYPE_IPV4_ADDR, &hs_ipaddr), NULL },
302 { "ipv6addr", FR_CONF_POINTER(PW_TYPE_IPV6_ADDR, &hs_ipaddr), NULL },
303 { "virtual_server", FR_CONF_POINTER(PW_TYPE_STRING, &hs_virtual_server), NULL },
305 { "port", FR_CONF_OFFSET(PW_TYPE_SHORT, home_server_t, port), "0" },
307 { "type", FR_CONF_POINTER(PW_TYPE_STRING, &hs_type), NULL },
310 { "proto", FR_CONF_POINTER(PW_TYPE_STRING, &hs_proto), NULL },
313 { "secret", FR_CONF_OFFSET(PW_TYPE_STRING | PW_TYPE_SECRET, home_server_t, secret), NULL },
315 { "src_ipaddr", FR_CONF_POINTER(PW_TYPE_STRING, &hs_srcipaddr), NULL },
317 { "response_window", FR_CONF_OFFSET(PW_TYPE_TIMEVAL, home_server_t, response_window), "30" },
318 { "response_timeouts", FR_CONF_OFFSET(PW_TYPE_INTEGER, home_server_t, max_response_timeouts), "1" },
319 { "max_outstanding", FR_CONF_OFFSET(PW_TYPE_INTEGER, home_server_t, max_outstanding), "65536" },
321 { "zombie_period", FR_CONF_OFFSET(PW_TYPE_INTEGER, home_server_t, zombie_period), "40" },
322 { "status_check", FR_CONF_POINTER(PW_TYPE_STRING, &hs_check), "none" },
323 { "ping_check", FR_CONF_POINTER(PW_TYPE_STRING, &hs_check), NULL },
325 { "ping_interval", FR_CONF_OFFSET(PW_TYPE_INTEGER, home_server_t, ping_interval), "30" },
326 { "check_interval", FR_CONF_OFFSET(PW_TYPE_INTEGER, home_server_t, ping_interval), "30" },
328 { "check_timeout", FR_CONF_OFFSET(PW_TYPE_INTEGER, home_server_t, ping_timeout), "4" },
329 { "status_check_timeout", FR_CONF_OFFSET(PW_TYPE_INTEGER, home_server_t, ping_timeout), NULL },
331 { "num_answers_to_alive", FR_CONF_OFFSET(PW_TYPE_INTEGER, home_server_t, num_pings_to_alive), "3" },
332 { "revive_interval", FR_CONF_OFFSET(PW_TYPE_INTEGER, home_server_t, revive_interval), "300" },
334 { "username", FR_CONF_OFFSET(PW_TYPE_STRING, home_server_t, ping_user_name), NULL },
335 { "password", FR_CONF_OFFSET(PW_TYPE_STRING, home_server_t, ping_user_password), NULL },
338 { "historic_average_window", FR_CONF_OFFSET(PW_TYPE_INTEGER, home_server_t, ema.window), NULL },
342 { "coa", FR_CONF_POINTER(PW_TYPE_SUBSECTION, NULL), (void const *) home_server_coa },
345 { "limit", FR_CONF_POINTER(PW_TYPE_SUBSECTION, NULL), (void const *) limit_config },
347 { NULL, -1, 0, NULL, NULL } /* end the list */
351 static void null_free(UNUSED void *data)
355 static int home_server_add(realm_config_t *rc, CONF_SECTION *cs)
363 hs_virtual_server = NULL;
365 name2 = cf_section_name2(cs);
367 cf_log_err_cs(cs, "Home server section is missing a name");
371 home = talloc_zero(rc, home_server_t);
375 home->state = HOME_STATE_UNKNOWN;
378 * Last packet sent / received are zero.
381 memset(&hs_ipaddr, 0, sizeof(hs_ipaddr));
382 if (cf_section_parse(cs, home, home_server_config) < 0) {
387 * Figure out which one to use.
389 if (cf_pair_find(cs, "ipaddr") || cf_pair_find(cs, "ipv4addr") || cf_pair_find(cs, "ipv6addr")) {
390 if (is_wildcard(&hs_ipaddr)) {
391 cf_log_err_cs(cs, "Wildcard '*' addresses are not permitted for home servers");
394 home->ipaddr = hs_ipaddr;
395 } else if ((cp = cf_pair_find(cs, "virtual_server")) != NULL) {
396 home->ipaddr.af = AF_UNSPEC;
397 home->server = cf_pair_value(cp);
400 "Invalid value for virtual_server");
404 if (!cf_section_sub_find_name2(rc->cs, "server", home->server)) {
407 "No such server %s", home->server);
412 * When CoA is used, the user has to specify the type
413 * of the home server, even when they point to
416 home->secret = strdup("");
420 cf_log_err_cs(cs, "No ipaddr, ipv4addr, ipv6addr, or virtual_server defined for home server \"%s\"", name2);
431 if (home->port == 0) {
432 cf_log_err_cs(cs, "No port, or invalid port defined for home server %s", name2);
437 * Use a reasonable default.
440 if (!hs_type || (strcasecmp(hs_type, "auth+acct") == 0)) {
441 home->type = HOME_TYPE_AUTH;
443 } else if (strcasecmp(hs_type, "auth") == 0) {
444 home->type = HOME_TYPE_AUTH;
446 } else if (strcasecmp(hs_type, "acct") == 0) {
447 home->type = HOME_TYPE_ACCT;
449 } else if (strcasecmp(hs_type, "coa") == 0) {
450 home->type = HOME_TYPE_COA;
453 if (home->server != NULL) {
454 cf_log_err_cs(cs, "Home servers of type \"coa\" cannot point to a virtual server");
460 cf_log_err_cs(cs, "Invalid type \"%s\" for home server %s.", hs_type, name2);
465 if (!hs_check || (strcasecmp(hs_check, "none") == 0)) {
466 home->ping_check = HOME_PING_CHECK_NONE;
468 } else if (strcasecmp(hs_check, "status-server") == 0) {
469 home->ping_check = HOME_PING_CHECK_STATUS_SERVER;
471 } else if (strcasecmp(hs_check, "request") == 0) {
472 home->ping_check = HOME_PING_CHECK_REQUEST;
474 if (!home->ping_user_name ||
475 !*home->ping_user_name) {
476 cf_log_err_cs(cs, "You must supply a 'username' to enable status_check=request");
480 if ((home->type == HOME_TYPE_AUTH) &&
481 (!home->ping_user_password ||
482 !*home->ping_user_password)) {
483 cf_log_err_cs(cs, "You must supply a password to enable status_check=request");
489 "Invalid status_check \"%s\" for home server %s.",
495 if ((home->ping_check != HOME_PING_CHECK_NONE) &&
496 (home->ping_check != HOME_PING_CHECK_STATUS_SERVER)) {
497 if (!home->ping_user_name) {
498 cf_log_err_cs(cs, "You must supply a user name to enable status_check=request");
502 if ((home->type == HOME_TYPE_AUTH) &&
503 !home->ping_user_password) {
504 cf_log_err_cs(cs, "You must supply a password to enable status_check=request");
509 home->proto = IPPROTO_UDP;
512 if (strcmp(hs_proto, "udp") == 0) {
515 } else if (strcmp(hs_proto, "tcp") == 0) {
517 home->proto = IPPROTO_TCP;
519 if (home->ping_check != HOME_PING_CHECK_NONE) {
521 "Only 'status_check = none' is allowed for home servers with 'proto = tcp'");
527 "Unknown proto \"%s\".", hs_proto);
534 rbtree_finddata(home_servers_byaddr, home)) {
535 cf_log_err_cs(cs, "Duplicate home server");
540 * Check the TLS configuration.
542 tls = cf_section_sub_find(cs, "tls");
545 * If were doing RADSEC (tls+tcp) the secret should default
546 * to radsec, else a secret must be set.
550 if (tls && (home->proto == IPPROTO_TCP)) {
551 home->secret = "radsec";
555 cf_log_err_cs(cs, "No shared secret defined for home server %s", name2);
561 * If the home is a virtual server, don't look up source IP.
564 rad_assert(home->ipaddr.af != AF_UNSPEC);
567 * Otherwise look up the source IP using the same
568 * address family as the destination IP.
571 if (ip_hton(&home->src_ipaddr, home->ipaddr.af, hs_srcipaddr, false) < 0) {
572 cf_log_err_cs(cs, "Failed parsing src_ipaddr");
578 * Source isn't specified: Source is
579 * the correct address family, but all zeros.
581 memset(&home->src_ipaddr, 0, sizeof(home->src_ipaddr));
582 home->src_ipaddr.af = home->ipaddr.af;
585 if (tls && (home->proto != IPPROTO_TCP)) {
586 cf_log_err_cs(cs, "TLS transport is not available for UDP sockets");
593 cf_log_err_cs(cs, "TLS transport is not available in this executable");
598 * Parse the SSL client configuration.
601 home->tls = tls_client_conf_parse(tls);
609 cf_log_err_cs(cs, "Virtual home_servers cannot have a \"tls\" subsection");
615 return realm_home_server_add(home, cs, dual);
619 int realm_home_server_add(home_server_t *home, CONF_SECTION *cs, int dual)
621 const char *name2 = home->name;
622 CONF_SECTION *parent = NULL;
625 * The structs aren't mutex protected. Refuse to destroy
628 if (realms_initialized && !realm_config->dynamic) {
629 DEBUG("Must set \"dynamic = true\" in proxy.conf");
634 * Make sure that this is set.
636 if (home->src_ipaddr.af == AF_UNSPEC) {
637 home->src_ipaddr.af = home->ipaddr.af;
640 if (rbtree_finddata(home_servers_byname, home) != NULL) {
642 "Duplicate home server name %s.", name2);
647 (rbtree_finddata(home_servers_byaddr, home) != NULL)) {
649 "Duplicate home server IP %s.", name2);
653 if (!rbtree_insert(home_servers_byname, home)) {
655 "Internal error %d adding home server %s.",
661 !rbtree_insert(home_servers_byaddr, home)) {
662 rbtree_deletebydata(home_servers_byname, home);
664 "Internal error %d adding home server %s.",
670 home->number = home_server_max_number++;
671 if (!rbtree_insert(home_servers_bynumber, home)) {
672 rbtree_deletebydata(home_servers_byname, home);
673 if (home->ipaddr.af != AF_UNSPEC) {
674 rbtree_deletebydata(home_servers_byname, home);
677 "Internal error %d adding home server %s.",
683 FR_INTEGER_BOUND_CHECK("max_outstanding", home->max_outstanding, >=, 8);
684 FR_INTEGER_BOUND_CHECK("max_outstanding", home->max_outstanding, <=, 65536*16);
686 FR_INTEGER_BOUND_CHECK("ping_interval", home->ping_interval, >=, 6);
687 FR_INTEGER_BOUND_CHECK("ping_interval", home->ping_interval, <=, 120);
689 FR_TIMEVAL_BOUND_CHECK("response_window", &home->response_window, >=, 0, 1000);
690 FR_TIMEVAL_BOUND_CHECK("response_window", &home->response_window, <=, 60, 0);
691 FR_TIMEVAL_BOUND_CHECK("response_window", &home->response_window, <=,
692 main_config.max_request_time, 0);
694 FR_INTEGER_BOUND_CHECK("response_timeouts", home->response_timeouts, >=, 1);
695 FR_INTEGER_BOUND_CHECK("response_timeouts", home->response_timeouts, <=, 1000);
698 * Track the minimum response window, so that we can
699 * correctly set the timers in process.c
701 if (timercmp(&main_config.init_delay, &home->response_window, >)) {
702 main_config.init_delay = home->response_window;
705 FR_INTEGER_BOUND_CHECK("zombie_period", home->zombie_period, >=, 1);
706 FR_INTEGER_BOUND_CHECK("zombie_period", home->zombie_period, <=, 120);
707 FR_INTEGER_BOUND_CHECK("zombie_period", home->zombie_period, >=, (uint32_t) home->response_window.tv_sec);
709 FR_INTEGER_BOUND_CHECK("num_pings_to_alive", home->num_pings_to_alive, >=, 3);
710 FR_INTEGER_BOUND_CHECK("num_pings_to_alive", home->num_pings_to_alive, <=, 10);
712 FR_INTEGER_BOUND_CHECK("check_timeout", home->ping_timeout, >=, 1);
713 FR_INTEGER_BOUND_CHECK("check_timeout", home->ping_timeout, <=, 10);
715 FR_INTEGER_BOUND_CHECK("revive_interval", home->revive_interval, >=, 60);
716 FR_INTEGER_BOUND_CHECK("revive_interval", home->revive_interval, <=, 3600);
719 FR_INTEGER_BOUND_CHECK("coa_irt", home->coa_irt, >=, 1);
720 FR_INTEGER_BOUND_CHECK("coa_irt", home->coa_irt, <=, 5);
722 FR_INTEGER_BOUND_CHECK("coa_mrc", home->coa_mrc, <=, 20);
724 FR_INTEGER_BOUND_CHECK("coa_mrt", home->coa_mrt, <=, 30);
726 FR_INTEGER_BOUND_CHECK("coa_mrd", home->coa_mrd, >=, 5);
727 FR_INTEGER_BOUND_CHECK("coa_mrd", home->coa_mrd, <=, 60);
730 FR_INTEGER_BOUND_CHECK("max_connections", home->limit.max_connections, <=, 1024);
734 * UDP sockets can't be connection limited.
736 if (home->proto != IPPROTO_TCP) home->limit.max_connections = 0;
739 if ((home->limit.idle_timeout > 0) && (home->limit.idle_timeout < 5))
740 home->limit.idle_timeout = 5;
741 if ((home->limit.lifetime > 0) && (home->limit.lifetime < 5))
742 home->limit.lifetime = 5;
743 if ((home->limit.lifetime > 0) && (home->limit.idle_timeout > home->limit.lifetime))
744 home->limit.idle_timeout = 0;
746 parent = cf_item_parent(cf_sectiontoitem(cs));
747 if (strcmp(cf_section_name1(parent), "server") == 0) {
748 home->parent_server = cf_section_name2(parent);
752 home_server_t *home2 = talloc(home, home_server_t);
754 memcpy(home2, home, sizeof(*home2));
756 home2->type = HOME_TYPE_ACCT;
758 home2->ping_user_password = NULL;
760 home2->parent_server = home->parent_server;
762 if (!rbtree_insert(home_servers_byname, home2)) {
764 "Internal error %d adding home server %s.",
771 !rbtree_insert(home_servers_byaddr, home2)) {
772 rbtree_deletebydata(home_servers_byname, home2);
774 "Internal error %d adding home server %s.",
782 home2->number = home_server_max_number++;
783 if (!rbtree_insert(home_servers_bynumber, home2)) {
784 rbtree_deletebydata(home_servers_byname, home2);
785 if (!home2->server) {
786 rbtree_deletebydata(home_servers_byname, home2);
789 "Internal error %d adding home server %s.",
798 * Mark it as already processed
800 cf_data_add(cs, "home_server", null_free, null_free);
806 static home_pool_t *server_pool_alloc(char const *name, home_pool_type_t type,
807 int server_type, int num_home_servers)
811 pool = rad_malloc(sizeof(*pool) + (sizeof(pool->servers[0]) *
813 if (!pool) return NULL; /* just for pairanoia */
815 memset(pool, 0, sizeof(*pool) + (sizeof(pool->servers[0]) *
820 pool->server_type = server_type;
821 pool->num_home_servers = num_home_servers;
827 * Ensure any home_server clauses in a home_server_pool section reference
828 * defined home servers, which should already have been created, regardless
829 * of where they appear in the configuration.
831 static int pool_check_home_server(UNUSED realm_config_t *rc, CONF_PAIR *cp,
832 char const *name, int server_type,
833 home_server_t **phome)
835 home_server_t myhome, *home;
839 "No value given for home_server");
844 myhome.type = server_type;
845 home = rbtree_finddata(home_servers_byname, &myhome);
851 cf_log_err_cp(cp, "Unknown home_server \"%s\".", name);
856 int realm_pool_add(home_pool_t *pool, UNUSED CONF_SECTION *cs)
859 * The structs aren't mutex protected. Refuse to destroy
862 if (realms_initialized && !realm_config->dynamic) {
863 DEBUG("Must set \"dynamic = true\" in proxy.conf");
867 if (!rbtree_insert(home_pools_byname, pool)) {
868 rad_assert("Internal sanity check failed" == NULL);
875 static int server_pool_add(realm_config_t *rc,
876 CONF_SECTION *cs, int server_type, int do_print)
879 home_pool_t *pool = NULL;
882 int num_home_servers;
885 name2 = cf_section_name1(cs);
886 if (!name2 || ((strcasecmp(name2, "server_pool") != 0) &&
887 (strcasecmp(name2, "home_server_pool") != 0))) {
889 "Section is not a home_server_pool");
893 name2 = cf_section_name2(cs);
896 "Server pool section is missing a name");
901 * Count the home servers and initalize them.
903 num_home_servers = 0;
904 for (cp = cf_pair_find(cs, "home_server");
906 cp = cf_pair_find_next(cs, cp, "home_server")) {
909 if (!pool_check_home_server(rc, cp, cf_pair_value(cp),
910 server_type, &home)) {
911 DEBUG("SHIT %d", __LINE__);
916 if (num_home_servers == 0) {
918 "No home servers defined in pool %s",
923 pool = server_pool_alloc(name2, HOME_POOL_FAIL_OVER, server_type,
926 cf_log_err_cs(cs, "Failed allocating memory for pool");
933 * Fallback servers must be defined, and must be
936 cp = cf_pair_find(cs, "fallback");
939 if (server_type == HOME_TYPE_COA) {
940 cf_log_err_cs(cs, "Home server pools of type \"coa\" cannot have a fallback virtual server");
945 if (!pool_check_home_server(rc, cp, cf_pair_value(cp),
946 server_type, &pool->fallback)) {
951 if (!pool->fallback->server) {
952 cf_log_err_cs(cs, "Fallback home_server %s does NOT contain a virtual_server directive.", pool->fallback->name);
957 if (do_print) cf_log_info(cs, " home_server_pool %s {", name2);
959 cp = cf_pair_find(cs, "type");
961 static FR_NAME_NUMBER pool_types[] = {
962 { "load-balance", HOME_POOL_LOAD_BALANCE },
964 { "fail-over", HOME_POOL_FAIL_OVER },
965 { "fail_over", HOME_POOL_FAIL_OVER },
967 { "round-robin", HOME_POOL_LOAD_BALANCE },
968 { "round_robin", HOME_POOL_LOAD_BALANCE },
970 { "client-balance", HOME_POOL_CLIENT_BALANCE },
971 { "client-port-balance", HOME_POOL_CLIENT_PORT_BALANCE },
972 { "keyed-balance", HOME_POOL_KEYED_BALANCE },
976 value = cf_pair_value(cp);
979 "No value given for type");
983 pool->type = fr_str2int(pool_types, value, 0);
986 "Unknown type \"%s\".",
991 if (do_print) cf_log_info(cs, "\ttype = %s", value);
994 cp = cf_pair_find(cs, "virtual_server");
996 pool->virtual_server = cf_pair_value(cp);
997 if (!pool->virtual_server) {
998 cf_log_err_cp(cp, "No value given for virtual_server");
1003 cf_log_info(cs, "\tvirtual_server = %s", pool->virtual_server);
1006 if (!cf_section_sub_find_name2(rc->cs, "server",
1007 pool->virtual_server)) {
1008 cf_log_err_cp(cp, "No such server %s",
1009 pool->virtual_server);
1015 num_home_servers = 0;
1016 for (cp = cf_pair_find(cs, "home_server");
1018 cp = cf_pair_find_next(cs, cp, "home_server")) {
1019 home_server_t myhome;
1021 value = cf_pair_value(cp);
1023 memset(&myhome, 0, sizeof(myhome));
1024 myhome.name = value;
1025 myhome.type = server_type;
1027 home = rbtree_finddata(home_servers_byname, &myhome);
1029 DEBUG2("Internal sanity check failed");
1034 WARN("Duplicate home server %s in server pool %s", home->name, pool->name);
1038 if (do_print) cf_log_info(cs, "\thome_server = %s", home->name);
1039 pool->servers[num_home_servers++] = home;
1040 } /* loop over home_server's */
1042 if (pool->fallback && do_print) {
1043 cf_log_info(cs, "\tfallback = %s", pool->fallback->name);
1046 if (!realm_pool_add(pool, cs)) goto error;
1048 if (do_print) cf_log_info(cs, " }");
1050 cf_data_add(cs, "home_server_pool", pool, free);
1052 rad_assert(pool->server_type != 0);
1057 if (do_print) cf_log_info(cs, " }");
1063 static int old_server_add(realm_config_t *rc, CONF_SECTION *cs,
1065 char const *name, char const *secret,
1066 home_pool_type_t ldflag, home_pool_t **pool_p,
1067 int type, char const *server)
1070 int i, insert_point, num_home_servers;
1071 home_server_t myhome, *home;
1072 home_pool_t mypool, *pool;
1073 CONF_SECTION *subcs;
1075 (void) rc; /* -Wunused */
1084 * LOCAL realms get sanity checked, and nothing else happens.
1086 if (strcmp(name, "LOCAL") == 0) {
1088 cf_log_err_cs(cs, "Realm \"%s\" cannot be both LOCAL and remote", name);
1095 return 0; /* Not proxying. Can't do non-LOCAL realms */
1098 mypool.name = realm;
1099 mypool.server_type = type;
1100 pool = rbtree_finddata(home_pools_byname, &mypool);
1102 if (pool->type != ldflag) {
1103 cf_log_err_cs(cs, "Inconsistent ldflag for server pool \"%s\"", name);
1107 if (pool->server_type != type) {
1108 cf_log_err_cs(cs, "Inconsistent home server type for server pool \"%s\"", name);
1115 home = rbtree_finddata(home_servers_byname, &myhome);
1117 if (secret && (strcmp(home->secret, secret) != 0)) {
1118 cf_log_err_cs(cs, "Inconsistent shared secret for home server \"%s\"", name);
1122 if (home->type != type) {
1123 cf_log_err_cs(cs, "Inconsistent type for home server \"%s\"", name);
1128 * See if the home server is already listed
1129 * in the pool. If so, do nothing else.
1131 if (pool) for (i = 0; i < pool->num_home_servers; i++) {
1132 if (pool->servers[i] == home) {
1139 * If we do have a pool, check that there is room to
1140 * insert the home server we've found, or the one that we
1143 * Note that we insert it into the LAST available
1144 * position, in order to maintain the same order as in
1145 * the configuration files.
1149 for (i = pool->num_home_servers - 1; i >= 0; i--) {
1150 if (pool->servers[i]) break;
1152 if (!pool->servers[i]) {
1157 if (insert_point < 0) {
1158 cf_log_err_cs(cs, "No room in pool to add home server \"%s\". Please update the realm configuration to use the new-style home servers and server pools.", name);
1164 * No home server, allocate one.
1170 home = talloc_zero(rc, home_server_t);
1172 home->hostname = name;
1174 home->secret = secret;
1176 home->proto = IPPROTO_UDP;
1178 p = strchr(name, ':');
1180 if (type == HOME_TYPE_AUTH) {
1181 home->port = PW_AUTH_UDP_PORT;
1183 home->port = PW_ACCT_UDP_PORT;
1189 } else if (p == name) {
1190 cf_log_err_cs(cs, "Invalid hostname %s", name);
1194 unsigned long port = strtoul(p + 1, NULL, 0);
1195 if ((port == 0) || (port > 65535)) {
1196 cf_log_err_cs(cs, "Invalid port %s", p + 1);
1201 home->port = (uint16_t)port;
1202 q = talloc_array(home, char, (p - name) + 1);
1203 memcpy(q, name, (p - name));
1209 if (ip_hton(&home->ipaddr, AF_UNSPEC, p, false) < 0) {
1211 "Failed looking up hostname %s.",
1217 home->src_ipaddr.af = home->ipaddr.af;
1219 home->ipaddr.af = AF_UNSPEC;
1220 home->server = server;
1225 * Use the old-style configuration.
1227 home->max_outstanding = 65535*16;
1228 home->zombie_period = rc->retry_delay * rc->retry_count;
1229 if (home->zombie_period < 2) home->zombie_period = 30;
1230 home->response_window.tv_sec = home->zombie_period - 1;
1231 home->response_window.tv_usec = 0;
1233 home->ping_check = HOME_PING_CHECK_NONE;
1235 home->revive_interval = rc->dead_time;
1237 if (rbtree_finddata(home_servers_byaddr, home)) {
1238 cf_log_err_cs(cs, "Home server %s has the same IP address and/or port as another home server.", name);
1243 if (!rbtree_insert(home_servers_byname, home)) {
1244 cf_log_err_cs(cs, "Internal error %d adding home server %s.", __LINE__, name);
1249 if (!rbtree_insert(home_servers_byaddr, home)) {
1250 rbtree_deletebydata(home_servers_byname, home);
1251 cf_log_err_cs(cs, "Internal error %d adding home server %s.", __LINE__, name);
1257 home->number = home_server_max_number++;
1258 if (!rbtree_insert(home_servers_bynumber, home)) {
1259 rbtree_deletebydata(home_servers_byname, home);
1260 if (home->ipaddr.af != AF_UNSPEC) {
1261 rbtree_deletebydata(home_servers_byname, home);
1264 "Internal error %d adding home server %s.",
1273 * We now have a home server, see if we can insert it
1274 * into pre-existing pool.
1276 if (insert_point >= 0) {
1277 rad_assert(pool != NULL);
1278 pool->servers[insert_point] = home;
1282 rad_assert(pool == NULL);
1283 rad_assert(home != NULL);
1286 * Count the old-style realms of this name.
1288 num_home_servers = 0;
1289 for (subcs = cf_section_find_next(cs, NULL, "realm");
1291 subcs = cf_section_find_next(cs, subcs, "realm")) {
1292 char const *this = cf_section_name2(subcs);
1294 if (!this || (strcmp(this, realm) != 0)) continue;
1298 if (num_home_servers == 0) {
1299 cf_log_err_cs(cs, "Internal error counting pools for home server %s.", name);
1304 pool = server_pool_alloc(realm, ldflag, type, num_home_servers);
1306 cf_log_err_cs(cs, "Out of memory");
1312 pool->servers[0] = home;
1314 if (!rbtree_insert(home_pools_byname, pool)) {
1315 rad_assert("Internal sanity check failed" == NULL);
1325 static int old_realm_config(realm_config_t *rc, CONF_SECTION *cs, REALM *r)
1328 char const *secret = NULL;
1329 home_pool_type_t ldflag;
1332 cp = cf_pair_find(cs, "ldflag");
1333 ldflag = HOME_POOL_FAIL_OVER;
1335 host = cf_pair_value(cp);
1337 cf_log_err_cp(cp, "No value specified for ldflag");
1341 if (strcasecmp(host, "fail_over") == 0) {
1342 cf_log_info(cs, "\tldflag = fail_over");
1344 } else if (strcasecmp(host, "round_robin") == 0) {
1345 ldflag = HOME_POOL_LOAD_BALANCE;
1346 cf_log_info(cs, "\tldflag = round_robin");
1349 cf_log_err_cs(cs, "Unknown value \"%s\" for ldflag", host);
1352 } /* else don't print it. */
1355 * Allow old-style if it doesn't exist, or if it exists and
1358 cp = cf_pair_find(cs, "authhost");
1360 host = cf_pair_value(cp);
1362 cf_log_err_cp(cp, "No value specified for authhost");
1366 if (strcmp(host, "LOCAL") != 0) {
1367 cp = cf_pair_find(cs, "secret");
1369 cf_log_err_cs(cs, "No shared secret supplied for realm: %s", r->name);
1373 secret = cf_pair_value(cp);
1375 cf_log_err_cp(cp, "No value specified for secret");
1380 cf_log_info(cs, "\tauthhost = %s", host);
1382 if (!old_server_add(rc, cs, r->name, host, secret, ldflag,
1383 &r->auth_pool, HOME_TYPE_AUTH, NULL)) {
1388 cp = cf_pair_find(cs, "accthost");
1390 host = cf_pair_value(cp);
1392 cf_log_err_cp(cp, "No value specified for accthost");
1397 * Don't look for a secret again if it was found
1400 if ((strcmp(host, "LOCAL") != 0) && !secret) {
1401 cp = cf_pair_find(cs, "secret");
1403 cf_log_err_cs(cs, "No shared secret supplied for realm: %s", r->name);
1407 secret = cf_pair_value(cp);
1409 cf_log_err_cp(cp, "No value specified for secret");
1414 cf_log_info(cs, "\taccthost = %s", host);
1416 if (!old_server_add(rc, cs, r->name, host, secret, ldflag,
1417 &r->acct_pool, HOME_TYPE_ACCT, NULL)) {
1422 cp = cf_pair_find(cs, "virtual_server");
1424 host = cf_pair_value(cp);
1426 cf_log_err_cp(cp, "No value specified for virtual_server");
1430 cf_log_info(cs, "\tvirtual_server = %s", host);
1432 if (!old_server_add(rc, cs, r->name, host, "", ldflag,
1433 &r->auth_pool, HOME_TYPE_AUTH, host)) {
1436 if (!old_server_add(rc, cs, r->name, host, "", ldflag,
1437 &r->acct_pool, HOME_TYPE_ACCT, host)) {
1442 if (secret) cf_log_info(cs, "\tsecret = %s", secret);
1450 static int add_pool_to_realm(realm_config_t *rc, CONF_SECTION *cs,
1451 char const *name, home_pool_t **dest,
1452 int server_type, int do_print)
1454 home_pool_t mypool, *pool;
1457 mypool.server_type = server_type;
1459 pool = rbtree_finddata(home_pools_byname, &mypool);
1461 CONF_SECTION *pool_cs;
1463 pool_cs = cf_section_sub_find_name2(rc->cs,
1467 pool_cs = cf_section_sub_find_name2(rc->cs,
1472 cf_log_err_cs(cs, "Failed to find home_server_pool \"%s\"", name);
1476 if (!server_pool_add(rc, pool_cs, server_type, do_print)) {
1480 pool = rbtree_finddata(home_pools_byname, &mypool);
1482 ERROR("Internal sanity check failed in add_pool_to_realm");
1487 if (pool->server_type != server_type) {
1488 cf_log_err_cs(cs, "Incompatible home_server_pool \"%s\" (mixed auth_pool / acct_pool)", name);
1499 static int realm_add(realm_config_t *rc, CONF_SECTION *cs)
1505 home_pool_t *auth_pool, *acct_pool;
1506 char const *auth_pool_name, *acct_pool_name;
1508 char const *coa_pool_name;
1509 home_pool_t *coa_pool;
1513 name2 = cf_section_name1(cs);
1514 if (!name2 || (strcasecmp(name2, "realm") != 0)) {
1515 cf_log_err_cs(cs, "Section is not a realm");
1519 name2 = cf_section_name2(cs);
1521 cf_log_err_cs(cs, "Realm section is missing the realm name");
1526 auth_pool = acct_pool = NULL;
1527 auth_pool_name = acct_pool_name = NULL;
1530 coa_pool_name = NULL;
1534 * Prefer new configuration to old one.
1536 cp = cf_pair_find(cs, "pool");
1537 if (!cp) cp = cf_pair_find(cs, "home_server_pool");
1538 if (cp) auth_pool_name = cf_pair_value(cp);
1539 if (cp && auth_pool_name) {
1540 acct_pool_name = auth_pool_name;
1541 if (!add_pool_to_realm(rc, cs,
1542 auth_pool_name, &auth_pool,
1543 HOME_TYPE_AUTH, 1)) {
1546 if (!add_pool_to_realm(rc, cs,
1547 auth_pool_name, &acct_pool,
1548 HOME_TYPE_ACCT, 0)) {
1553 cp = cf_pair_find(cs, "auth_pool");
1554 if (cp) auth_pool_name = cf_pair_value(cp);
1555 if (cp && auth_pool_name) {
1557 cf_log_err_cs(cs, "Cannot use \"pool\" and \"auth_pool\" at the same time");
1560 if (!add_pool_to_realm(rc, cs,
1561 auth_pool_name, &auth_pool,
1562 HOME_TYPE_AUTH, 1)) {
1567 cp = cf_pair_find(cs, "acct_pool");
1568 if (cp) acct_pool_name = cf_pair_value(cp);
1569 if (cp && acct_pool_name) {
1570 bool do_print = true;
1573 cf_log_err_cs(cs, "Cannot use \"pool\" and \"acct_pool\" at the same time");
1579 (strcmp(auth_pool_name, acct_pool_name) != 0))) {
1583 if (!add_pool_to_realm(rc, cs,
1584 acct_pool_name, &acct_pool,
1585 HOME_TYPE_ACCT, do_print)) {
1591 cp = cf_pair_find(cs, "coa_pool");
1592 if (cp) coa_pool_name = cf_pair_value(cp);
1593 if (cp && coa_pool_name) {
1594 bool do_print = true;
1596 if (!add_pool_to_realm(rc, cs,
1597 coa_pool_name, &coa_pool,
1598 HOME_TYPE_COA, do_print)) {
1605 cf_log_info(cs, " realm %s {", name2);
1609 * The realm MAY already exist if it's an old-style realm.
1610 * In that case, merge the old-style realm with this one.
1612 r = realm_find2(name2);
1613 if (r && (strcmp(r->name, name2) == 0)) {
1614 if (cf_pair_find(cs, "auth_pool") ||
1615 cf_pair_find(cs, "acct_pool")) {
1616 cf_log_err_cs(cs, "Duplicate realm \"%s\"", name2);
1620 if (!old_realm_config(rc, cs, r)) {
1624 cf_log_info(cs, " } # realm %s", name2);
1629 r = rad_malloc(sizeof(*r));
1630 memset(r, 0, sizeof(*r));
1635 r->auth_pool = auth_pool;
1636 r->acct_pool = acct_pool;
1638 r->coa_pool = coa_pool;
1641 if (auth_pool_name &&
1642 (auth_pool_name == acct_pool_name)) { /* yes, ptr comparison */
1643 cf_log_info(cs, "\tpool = %s", auth_pool_name);
1645 if (auth_pool_name) cf_log_info(cs, "\tauth_pool = %s", auth_pool_name);
1646 if (acct_pool_name) cf_log_info(cs, "\tacct_pool = %s", acct_pool_name);
1648 if (coa_pool_name) cf_log_info(cs, "\tcoa_pool = %s", coa_pool_name);
1653 cp = cf_pair_find(cs, "nostrip");
1654 if (cp && (cf_pair_value(cp) == NULL)) {
1656 cf_log_info(cs, "\tnostrip");
1660 * We're a new-style realm. Complain if we see the old
1663 if (r->auth_pool || r->acct_pool) {
1664 if (((cp = cf_pair_find(cs, "authhost")) != NULL) ||
1665 ((cp = cf_pair_find(cs, "accthost")) != NULL) ||
1666 ((cp = cf_pair_find(cs, "secret")) != NULL) ||
1667 ((cp = cf_pair_find(cs, "ldflag")) != NULL)) {
1668 WARN("Ignoring old-style configuration entry \"%s\" in realm \"%s\"", cf_pair_attr(cp), r->name);
1673 * The realm MAY be an old-style realm, as there
1674 * was no auth_pool or acct_pool. Double-check
1675 * it, just to be safe.
1677 } else if (!old_realm_config(rc, cs, r)) {
1681 if (!realm_realm_add(r, cs)) {
1685 cf_log_info(cs, " }");
1690 cf_log_info(cs, " } # realm %s", name2);
1696 int realm_realm_add(REALM *r, CONF_SECTION *cs)
1699 * The structs aren't mutex protected. Refuse to destroy
1702 if (realms_initialized && !realm_config->dynamic) {
1703 DEBUG("Must set \"dynamic = true\" in proxy.conf");
1709 * It's a regex. Sanity check it, and add it to a
1712 if (r->name[0] == '~') {
1714 realm_regex_t *rr, **last;
1718 * Include substring matches.
1720 rcode = regcomp(®, r->name + 1, REG_EXTENDED | REG_NOSUB | REG_ICASE);
1724 regerror(rcode, ®, buffer, sizeof(buffer));
1727 "Invalid regex \"%s\": %s",
1728 r->name + 1, buffer);
1733 rr = rad_malloc(sizeof(*rr));
1735 last = &realms_regex;
1736 while (*last) last = &((*last)->next); /* O(N^2)... sue me. */
1746 if (!rbtree_insert(realms_byname, r)) {
1747 rad_assert("Internal sanity check failed" == NULL);
1755 static const FR_NAME_NUMBER home_server_types[] = {
1756 { "auth", HOME_TYPE_AUTH },
1757 { "auth+acct", HOME_TYPE_AUTH },
1758 { "acct", HOME_TYPE_ACCT },
1759 { "coa", HOME_TYPE_COA },
1763 static int pool_peek_type(CONF_SECTION *config, CONF_SECTION *cs)
1766 char const *name, *type;
1768 CONF_SECTION *server_cs;
1770 cp = cf_pair_find(cs, "home_server");
1772 cf_log_err_cs(cs, "Pool does not contain a \"home_server\" entry");
1773 return HOME_TYPE_INVALID;
1776 name = cf_pair_value(cp);
1778 cf_log_err_cp(cp, "home_server entry does not reference a home server");
1779 return HOME_TYPE_INVALID;
1782 server_cs = cf_section_sub_find_name2(config, "home_server", name);
1784 cf_log_err_cp(cp, "home_server \"%s\" does not exist", name);
1785 return HOME_TYPE_INVALID;
1788 cp = cf_pair_find(server_cs, "type");
1790 cf_log_err_cs(server_cs, "home_server %s does not contain a \"type\" entry", name);
1791 return HOME_TYPE_INVALID;
1794 type = cf_pair_value(cp);
1796 cf_log_err_cs(server_cs, "home_server %s contains an empty \"type\" entry", name);
1797 return HOME_TYPE_INVALID;
1800 home = fr_str2int(home_server_types, type, HOME_TYPE_INVALID);
1801 if (home == HOME_TYPE_INVALID) {
1802 cf_log_err_cs(server_cs, "home_server %s contains an invalid \"type\" entry of value \"%s\"", name, type);
1803 return HOME_TYPE_INVALID;
1806 return home; /* 'cause we miss it so much */
1810 int realms_init(CONF_SECTION *config)
1815 CONF_SECTION *server_cs;
1819 if (realms_initialized) return 1;
1821 rc = talloc_zero(NULL, realm_config_t);
1825 cs = cf_subsection_find_next(config, NULL, "proxy");
1827 if (cf_section_parse(cs, rc, proxy_config) < 0) {
1828 ERROR("Failed parsing proxy section");
1832 rc->dead_time = DEAD_TIME;
1833 rc->retry_count = RETRY_COUNT;
1834 rc->retry_delay = RETRY_DELAY;
1835 rc->fallback = false;
1836 rc->dynamic = false;
1837 rc->wake_all_if_all_dead= 0;
1841 flags = RBTREE_FLAG_LOCK;
1844 home_servers_byaddr = rbtree_create(NULL, home_server_addr_cmp, home_server_free, flags);
1845 if (!home_servers_byaddr) goto error;
1847 home_servers_byname = rbtree_create(NULL, home_server_name_cmp, NULL, flags);
1848 if (!home_servers_byname) goto error;
1851 home_servers_bynumber = rbtree_create(NULL, home_server_number_cmp, NULL, flags);
1852 if (!home_servers_bynumber) goto error;
1855 home_pools_byname = rbtree_create(NULL, home_pool_name_cmp, NULL, flags);
1856 if (!home_pools_byname) goto error;
1858 for (cs = cf_subsection_find_next(config, NULL, "home_server");
1860 cs = cf_subsection_find_next(config, cs, "home_server")) {
1861 if (!home_server_add(rc, cs)) goto error;
1865 * Loop over virtual servers to find home servers which
1866 * are defined in them.
1868 for (server_cs = cf_subsection_find_next(config, NULL, "server");
1870 server_cs = cf_subsection_find_next(config, server_cs, "server")) {
1871 for (cs = cf_subsection_find_next(server_cs, NULL, "home_server");
1873 cs = cf_subsection_find_next(server_cs, cs, "home_server")) {
1874 if (!home_server_add(rc, cs)) goto error;
1880 * Now create the realms, which point to the home servers
1881 * and home server pools.
1883 realms_byname = rbtree_create(NULL, realm_name_cmp, NULL, flags);
1884 if (!realms_byname) goto error;
1886 for (cs = cf_subsection_find_next(config, NULL, "realm");
1888 cs = cf_subsection_find_next(config, cs, "realm")) {
1889 if (!realm_add(rc, cs)) {
1893 * Must be called after realms_free as home_servers
1894 * parented by rc are in trees freed by realms_free()
1903 * CoA pools aren't necessarily tied to realms.
1905 for (cs = cf_subsection_find_next(config, NULL, "home_server_pool");
1907 cs = cf_subsection_find_next(config, cs, "home_server_pool")) {
1911 * Pool was already loaded.
1913 if (cf_data_find(cs, "home_server_pool")) continue;
1915 type = pool_peek_type(config, cs);
1916 if (type == HOME_TYPE_INVALID) goto error;
1917 if (!server_pool_add(rc, cs, type, true)) goto error;
1922 xlat_register("home_server", xlat_home_server, NULL, NULL);
1923 xlat_register("home_server_pool", xlat_server_pool, NULL, NULL);
1927 realms_initialized = true;
1932 * Find a realm where "name" might be the regex.
1934 REALM *realm_find2(char const *name)
1939 if (!name) name = "NULL";
1941 myrealm.name = name;
1942 realm = rbtree_finddata(realms_byname, &myrealm);
1943 if (realm) return realm;
1947 realm_regex_t *this;
1949 for (this = realms_regex; this != NULL; this = this->next) {
1950 if (strcmp(this->realm->name, name) == 0) {
1958 * Couldn't find a realm. Look for DEFAULT.
1960 myrealm.name = "DEFAULT";
1961 return rbtree_finddata(realms_byname, &myrealm);
1966 * Find a realm in the REALM list.
1968 REALM *realm_find(char const *name)
1973 if (!name) name = "NULL";
1975 myrealm.name = name;
1976 realm = rbtree_finddata(realms_byname, &myrealm);
1977 if (realm) return realm;
1981 realm_regex_t *this;
1983 for (this = realms_regex; this != NULL; this = this->next) {
1988 * Include substring matches.
1990 if (regcomp(®, this->realm->name + 1, REG_EXTENDED | REG_NOSUB | REG_ICASE) != 0) {
1994 compare = regexec(®, name, 0, NULL, 0);
1997 if (compare == 0) return this->realm;
2003 * Couldn't find a realm. Look for DEFAULT.
2005 myrealm.name = "DEFAULT";
2006 return rbtree_finddata(realms_byname, &myrealm);
2013 * Allocate the proxy list if it doesn't already exist, and copy request
2014 * VPs into it. Setup src/dst IP addresses based on home server, and
2015 * calculate and add the message-authenticator.
2017 * This is a distinct function from home_server_ldb, as not all home_server_t
2018 * lookups result in the *CURRENT* request being proxied,
2019 * as in rlm_replicate, and this may trigger asserts elsewhere in the
2022 void home_server_update_request(home_server_t *home, REQUEST *request)
2026 * Allocate the proxy packet, only if it wasn't
2027 * already allocated by a module. This check is
2028 * mainly to support the proxying of EAP-TTLS and
2029 * EAP-PEAP tunneled requests.
2031 * In those cases, the EAP module creates a
2032 * "fake" request, and recursively passes it
2033 * through the authentication stage of the
2034 * server. The module then checks if the request
2035 * was supposed to be proxied, and if so, creates
2036 * a proxy packet from the TUNNELED request, and
2037 * not from the EAP request outside of the
2040 * The proxy then works like normal, except that
2041 * the response packet is "eaten" by the EAP
2042 * module, and encapsulated into an EAP packet.
2044 if (!request->proxy) {
2045 request->proxy = rad_alloc(request, true);
2046 if (!request->proxy) {
2053 * Copy the request, then look up name
2054 * and plain-text password in the copy.
2056 * Note that the User-Name attribute is
2057 * the *original* as sent over by the
2058 * client. The Stripped-User-Name
2059 * attribute is the one hacked through
2062 request->proxy->vps = paircopy(request->proxy,
2063 request->packet->vps);
2067 * Update the various fields as appropriate.
2069 request->proxy->src_ipaddr = home->src_ipaddr;
2070 request->proxy->src_port = 0;
2071 request->proxy->dst_ipaddr = home->ipaddr;
2072 request->proxy->dst_port = home->port;
2074 request->proxy->proto = home->proto;
2076 request->home_server = home;
2079 * Access-Requests have a Message-Authenticator added,
2080 * unless one already exists.
2082 if ((request->packet->code == PW_CODE_ACCESS_REQUEST) &&
2083 !pairfind(request->proxy->vps, PW_MESSAGE_AUTHENTICATOR, 0, TAG_ANY)) {
2084 pairmake(request->proxy, &request->proxy->vps,
2085 "Message-Authenticator", "0x00",
2090 home_server_t *home_server_ldb(char const *realmname,
2091 home_pool_t *pool, REQUEST *request)
2095 home_server_t *found = NULL;
2096 home_server_t *zombie = NULL;
2100 * Determine how to pick choose the home server.
2102 switch (pool->type) {
2106 * For load-balancing by client IP address, we
2107 * pick a home server by hashing the client IP.
2109 * This isn't as even a load distribution as
2110 * tracking the State attribute, but it's better
2113 case HOME_POOL_CLIENT_BALANCE:
2114 switch (request->packet->src_ipaddr.af) {
2116 hash = fr_hash(&request->packet->src_ipaddr.ipaddr.ip4addr,
2117 sizeof(request->packet->src_ipaddr.ipaddr.ip4addr));
2120 hash = fr_hash(&request->packet->src_ipaddr.ipaddr.ip6addr,
2121 sizeof(request->packet->src_ipaddr.ipaddr.ip6addr));
2127 start = hash % pool->num_home_servers;
2130 case HOME_POOL_CLIENT_PORT_BALANCE:
2131 switch (request->packet->src_ipaddr.af) {
2133 hash = fr_hash(&request->packet->src_ipaddr.ipaddr.ip4addr,
2134 sizeof(request->packet->src_ipaddr.ipaddr.ip4addr));
2137 hash = fr_hash(&request->packet->src_ipaddr.ipaddr.ip6addr,
2138 sizeof(request->packet->src_ipaddr.ipaddr.ip6addr));
2144 fr_hash_update(&request->packet->src_port,
2145 sizeof(request->packet->src_port), hash);
2146 start = hash % pool->num_home_servers;
2149 case HOME_POOL_KEYED_BALANCE:
2150 if ((vp = pairfind(request->config_items, PW_LOAD_BALANCE_KEY, 0, TAG_ANY)) != NULL) {
2151 hash = fr_hash(vp->vp_strvalue, vp->length);
2152 start = hash % pool->num_home_servers;
2157 case HOME_POOL_LOAD_BALANCE:
2158 case HOME_POOL_FAIL_OVER:
2162 default: /* this shouldn't happen... */
2169 * Starting with the home server we chose, loop through
2170 * all home servers. If the current one is dead, skip
2171 * it. If it is too busy, skip it.
2173 * Otherwise, use it.
2175 for (count = 0; count < pool->num_home_servers; count++) {
2176 home_server_t *home = pool->servers[(start + count) % pool->num_home_servers];
2178 if (!home) continue;
2181 * Skip dead home servers.
2183 * Home servers that are unknown, alive, or zombie
2184 * are used for proxying.
2186 if (home->state == HOME_STATE_IS_DEAD) {
2191 * This home server is too busy. Choose another one.
2193 if (home->currently_outstanding >= home->max_outstanding) {
2199 * We read the packet from a detail file, AND it
2200 * came from this server. Don't re-proxy it
2203 if ((request->listener->type == RAD_LISTEN_DETAIL) &&
2204 (request->packet->code == PW_CODE_ACCOUNTING_REQUEST) &&
2205 (fr_ipaddr_cmp(&home->ipaddr, &request->packet->src_ipaddr) == 0)) {
2211 * Default virtual: ignore homes tied to a
2214 if (!request->server && home->parent_server) {
2219 * A virtual AND home is tied to virtual,
2220 * ignore ones which don't match.
2222 if (request->server && home->parent_server &&
2223 strcmp(request->server, home->parent_server) != 0) {
2228 * Allow request->server && !home->parent_server
2230 * i.e. virtuals can proxy to globally defined
2235 * It's zombie, so we remember the first zombie
2236 * we find, but we don't mark it as a "live"
2239 if (home->state == HOME_STATE_ZOMBIE) {
2240 if (!zombie) zombie = home;
2245 * We've found the first "live" one. Use that.
2247 if (pool->type != HOME_POOL_LOAD_BALANCE) {
2253 * Otherwise we're doing some kind of load balancing.
2254 * If we haven't found one yet, pick this one.
2261 RDEBUG3("PROXY %s %d\t%s %d",
2262 found->name, found->currently_outstanding,
2263 home->name, home->currently_outstanding);
2266 * Prefer this server if it's less busy than the
2267 * one we had previously found.
2269 if (home->currently_outstanding < found->currently_outstanding) {
2270 RDEBUG3("PROXY Choosing %s: It's less busy than %s",
2271 home->name, found->name);
2277 * Ignore servers which are busier than the one
2280 if (home->currently_outstanding > found->currently_outstanding) {
2281 RDEBUG3("PROXY Skipping %s: It's busier than %s",
2282 home->name, found->name);
2287 * From the list of servers which have the same
2288 * load, choose one at random.
2290 if (((count + 1) * (fr_rand() & 0xffff)) < (uint32_t) 0x10000) {
2293 } /* loop over the home servers */
2296 * We have no live servers, BUT we have a zombie. Use
2297 * the zombie as a last resort.
2299 if (!found && zombie) {
2305 * There's a fallback if they're all dead.
2307 if (!found && pool->fallback) {
2308 found = pool->fallback;
2310 WARN("Home server pool %s failing over to fallback %s",
2311 pool->name, found->server);
2312 if (pool->in_fallback) goto update_and_return;
2314 pool->in_fallback = true;
2317 * Run the trigger once an hour saying that
2320 if ((pool->time_all_dead + 3600) < request->timestamp) {
2321 pool->time_all_dead = request->timestamp;
2322 exec_trigger(request, pool->cs, "home_server_pool.fallback", false);
2328 if ((found != pool->fallback) && pool->in_fallback) {
2329 pool->in_fallback = false;
2330 exec_trigger(request, pool->cs, "home_server_pool.normal", false);
2337 * No live match found, and no fallback to the "DEFAULT"
2338 * realm. We fix this by blindly marking all servers as
2339 * "live". But only do it for ones that don't support
2340 * "pings", as they will be marked live when they
2341 * actually are live.
2343 if (!realm_config->fallback &&
2344 realm_config->wake_all_if_all_dead) {
2345 for (count = 0; count < pool->num_home_servers; count++) {
2346 home_server_t *home = pool->servers[count];
2348 if (!home) continue;
2350 if ((home->state == HOME_STATE_IS_DEAD) &&
2351 (home->ping_check == HOME_PING_CHECK_NONE)) {
2352 home->state = HOME_STATE_ALIVE;
2353 home->response_timeouts = 0;
2354 if (!found) found = home;
2358 if (found) goto update_and_return;
2362 * Still nothing. Look up the DEFAULT realm, but only
2363 * if we weren't looking up the NULL or DEFAULT realms.
2365 if (realm_config->fallback &&
2367 (strcmp(realmname, "NULL") != 0) &&
2368 (strcmp(realmname, "DEFAULT") != 0)) {
2369 REALM *rd = realm_find("DEFAULT");
2371 if (!rd) return NULL;
2374 if (request->packet->code == PW_CODE_ACCESS_REQUEST) {
2375 pool = rd->auth_pool;
2377 } else if (request->packet->code == PW_CODE_ACCOUNTING_REQUEST) {
2378 pool = rd->acct_pool;
2380 if (!pool) return NULL;
2382 RDEBUG2("PROXY - realm %s has no live home servers. Falling back to the DEFAULT realm.", realmname);
2383 return home_server_ldb(rd->name, pool, request);
2387 * Still haven't found anything. Oh well.
2393 home_server_t *home_server_find(fr_ipaddr_t *ipaddr, uint16_t port, int proto)
2395 home_server_t myhome;
2397 memset(&myhome, 0, sizeof(myhome));
2398 myhome.ipaddr = *ipaddr;
2399 myhome.src_ipaddr.af = ipaddr->af;
2402 myhome.proto = proto;
2404 myhome.proto = IPPROTO_UDP;
2406 myhome.server = NULL; /* we're not called for internal proxying */
2408 return rbtree_finddata(home_servers_byaddr, &myhome);
2412 home_server_t *home_server_byname(char const *name, int type)
2414 home_server_t myhome;
2416 memset(&myhome, 0, sizeof(myhome));
2420 return rbtree_finddata(home_servers_byname, &myhome);
2425 home_server_t *home_server_bynumber(int number)
2427 home_server_t myhome;
2429 memset(&myhome, 0, sizeof(myhome));
2430 myhome.number = number;
2431 myhome.server = NULL; /* we're not called for internal proxying */
2433 return rbtree_finddata(home_servers_bynumber, &myhome);
2437 home_pool_t *home_pool_byname(char const *name, int type)
2441 memset(&mypool, 0, sizeof(mypool));
2443 mypool.server_type = type;
2444 return rbtree_finddata(home_pools_byname, &mypool);