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-rw-r--r--src/main/realms.c3197
1 files changed, 3197 insertions, 0 deletions
diff --git a/src/main/realms.c b/src/main/realms.c
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--- /dev/null
+++ b/src/main/realms.c
@@ -0,0 +1,3197 @@
+/*
+ * realms.c Realm handling code
+ *
+ * Version: $Id$
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
+ *
+ * Copyright 2007 The FreeRADIUS server project
+ * Copyright 2007 Alan DeKok <aland@deployingradius.com>
+ */
+
+RCSID("$Id$")
+
+#include <freeradius-devel/radiusd.h>
+#include <freeradius-devel/realms.h>
+#include <freeradius-devel/rad_assert.h>
+
+#include <sys/stat.h>
+
+#include <ctype.h>
+#include <fcntl.h>
+
+static rbtree_t *realms_byname = NULL;
+#ifdef WITH_TCP
+bool home_servers_udp = false;
+#endif
+
+#ifdef HAVE_DIRENT_H
+#include <dirent.h>
+#endif
+
+#ifdef HAVE_REGEX
+typedef struct realm_regex realm_regex_t;
+
+/** Regular expression associated with a realm
+ *
+ */
+struct realm_regex {
+ REALM *realm; //!< The realm this regex matches.
+ regex_t *preg; //!< The pre-compiled regular expression.
+ realm_regex_t *next; //!< The next realm in the list of regular expressions.
+};
+static realm_regex_t *realms_regex = NULL;
+#endif /* HAVE_REGEX */
+
+struct realm_config {
+ CONF_SECTION *cs;
+#ifdef HAVE_DIRENT_H
+ char const *directory;
+#endif
+ uint32_t dead_time;
+ uint32_t retry_count;
+ uint32_t retry_delay;
+ bool dynamic;
+ bool fallback;
+ bool wake_all_if_all_dead;
+};
+
+static const FR_NAME_NUMBER home_server_types[] = {
+ { "auth", HOME_TYPE_AUTH },
+ { "acct", HOME_TYPE_ACCT },
+ { "auth+acct", HOME_TYPE_AUTH_ACCT },
+ { "coa", HOME_TYPE_COA },
+#ifdef WITH_COA_TUNNEL
+ { "auth+coa", HOME_TYPE_AUTH_COA },
+ { "auth+acct+coa", HOME_TYPE_AUTH_ACCT_COA },
+#endif
+ { NULL, 0 }
+};
+
+static const FR_NAME_NUMBER home_ping_check[] = {
+ { "none", HOME_PING_CHECK_NONE },
+ { "status-server", HOME_PING_CHECK_STATUS_SERVER },
+ { "request", HOME_PING_CHECK_REQUEST },
+ { NULL, 0 }
+};
+
+static const FR_NAME_NUMBER home_proto[] = {
+ { "UDP", IPPROTO_UDP },
+ { "TCP", IPPROTO_TCP },
+ { NULL, 0 }
+};
+
+
+static realm_config_t *realm_config = NULL;
+
+#ifdef WITH_PROXY
+static rbtree_t *home_servers_byaddr = NULL;
+static rbtree_t *home_servers_byname = NULL;
+#ifdef WITH_STATS
+int home_server_max_number = 0;
+static rbtree_t *home_servers_bynumber = NULL;
+#endif
+
+static rbtree_t *home_pools_byname = NULL;
+
+/*
+ * Map the proxy server configuration parameters to variables.
+ */
+static const CONF_PARSER proxy_config[] = {
+ { "retry_delay", FR_CONF_OFFSET(PW_TYPE_INTEGER, realm_config_t, retry_delay), STRINGIFY(RETRY_DELAY) },
+
+ { "retry_count", FR_CONF_OFFSET(PW_TYPE_INTEGER, realm_config_t, retry_count), STRINGIFY(RETRY_COUNT) },
+
+ { "default_fallback", FR_CONF_OFFSET(PW_TYPE_BOOLEAN, realm_config_t, fallback), "no" },
+
+ { "dynamic", FR_CONF_OFFSET(PW_TYPE_BOOLEAN, realm_config_t, dynamic), NULL },
+
+#ifdef HAVE_DIRENT_H
+ { "directory", FR_CONF_OFFSET(PW_TYPE_STRING, realm_config_t, directory), NULL },
+#endif
+
+ { "dead_time", FR_CONF_OFFSET(PW_TYPE_INTEGER, realm_config_t, dead_time), STRINGIFY(DEAD_TIME) },
+
+ { "wake_all_if_all_dead", FR_CONF_OFFSET(PW_TYPE_BOOLEAN, realm_config_t, wake_all_if_all_dead), "no" },
+ CONF_PARSER_TERMINATOR
+};
+#endif
+
+static int realm_name_cmp(void const *one, void const *two)
+{
+ REALM const *a = one;
+ REALM const *b = two;
+
+ return strcasecmp(a->name, b->name);
+}
+
+
+#ifdef WITH_PROXY
+static void home_server_free(void *data)
+{
+ home_server_t *home = talloc_get_type_abort(data, home_server_t);
+
+ talloc_free(home);
+}
+
+static int home_server_name_cmp(void const *one, void const *two)
+{
+ home_server_t const *a = one;
+ home_server_t const *b = two;
+
+ if (a->type < b->type) return -1;
+ if (a->type > b->type) return +1;
+
+ return strcasecmp(a->name, b->name);
+}
+
+static int home_server_addr_cmp(void const *one, void const *two)
+{
+ int rcode;
+ home_server_t const *a = one;
+ home_server_t const *b = two;
+
+ if (a->virtual_server && !b->virtual_server) return -1;
+ if (!a->virtual_server && b->virtual_server) return +1;
+ if (a->virtual_server && b->virtual_server) {
+ rcode = a->type - b->type;
+ if (rcode != 0) return rcode;
+ return strcmp(a->virtual_server, b->virtual_server);
+ }
+
+ if (a->port < b->port) return -1;
+ if (a->port > b->port) return +1;
+
+#ifdef WITH_TCP
+ if (a->proto < b->proto) return -1;
+ if (a->proto > b->proto) return +1;
+#endif
+
+ rcode = fr_ipaddr_cmp(&a->src_ipaddr, &b->src_ipaddr);
+ if (rcode != 0) return rcode;
+
+ return fr_ipaddr_cmp(&a->ipaddr, &b->ipaddr);
+}
+
+#ifdef WITH_STATS
+static int home_server_number_cmp(void const *one, void const *two)
+{
+ home_server_t const *a = one;
+ home_server_t const *b = two;
+
+ return (a->number - b->number);
+}
+#endif
+
+static int home_pool_name_cmp(void const *one, void const *two)
+{
+ home_pool_t const *a = one;
+ home_pool_t const *b = two;
+
+ if (a->server_type < b->server_type) return -1;
+ if (a->server_type > b->server_type) return +1;
+
+ return strcasecmp(a->name, b->name);
+}
+
+
+static size_t xlat_cs(CONF_SECTION *cs, char const *fmt, char *out, size_t outlen)
+{
+ char const *value = NULL;
+
+ if (!fmt) {
+ DEBUG("No configuration item requested. Ignoring.");
+
+ *out = '\0';
+ return 0;
+ }
+
+ /*
+ * Instance name
+ */
+ if (strcmp(fmt, "instance") == 0) {
+ value = cf_section_name2(cs);
+ if (!value) {
+ *out = '\0';
+ return 0;
+ }
+ } else {
+ CONF_PAIR *cp;
+
+ cp = cf_pair_find(cs, fmt);
+ if (!cp || !(value = cf_pair_value(cp))) {
+ *out = '\0';
+ return 0;
+ }
+ }
+
+ strlcpy(out, value, outlen);
+
+ return strlen(out);
+}
+
+
+/*
+ * Xlat for %{home_server:foo}
+ */
+static ssize_t xlat_home_server(UNUSED void *instance, REQUEST *request,
+ char const *fmt, char *out, size_t outlen)
+{
+ if (!request->home_server) {
+ RWDEBUG("No home_server associated with this request");
+
+ *out = '\0';
+ return 0;
+ }
+
+ if (!fmt) {
+ RWDEBUG("No configuration item requested. Ignoring.");
+
+ *out = '\0';
+ return 0;
+ }
+
+ if (strcmp(fmt, "state") == 0) {
+ char const *state;
+
+ switch (request->home_server->state) {
+ case HOME_STATE_ALIVE:
+ state = "alive";
+ break;
+
+ case HOME_STATE_ZOMBIE:
+ state = "zombie";
+ break;
+
+ case HOME_STATE_IS_DEAD:
+ state = "dead";
+ break;
+
+ case HOME_STATE_CONNECTION_FAIL:
+ state = "fail";
+ break;
+
+ case HOME_STATE_ADMIN_DOWN:
+ state = "down";
+ break;
+
+ default:
+ state = "unknown";
+ break;
+ }
+
+ strlcpy(out, state, outlen);
+ return strlen(out);
+ }
+
+ return xlat_cs(request->home_server->cs, fmt, out, outlen);
+}
+
+
+/*
+ * Xlat for %{home_server_pool:foo}
+ */
+static ssize_t xlat_server_pool(UNUSED void *instance, REQUEST *request,
+ char const *fmt, char *out, size_t outlen)
+{
+ if (!request->home_pool) {
+ RWDEBUG("No home_pool associated with this request");
+
+ *out = '\0';
+ return 0;
+ }
+
+ if (!fmt) {
+ RWDEBUG("No configuration item requested. Ignoring.");
+
+ *out = '\0';
+ return 0;
+ }
+
+ if (strcmp(fmt, "state") == 0) {
+ char const *state;
+
+ if (request->home_pool->in_fallback) {
+ state = "fallback";
+
+ } else {
+ state = "alive";
+ }
+
+ strlcpy(out, state, outlen);
+ return strlen(out);
+ }
+
+ return xlat_cs(request->home_pool->cs, fmt, out, outlen);
+}
+
+
+/*
+ * Xlat for %{home_server_dynamic:foo}
+ */
+static ssize_t xlat_home_server_dynamic(UNUSED void *instance, REQUEST *request,
+ char const *fmt, char *out, size_t outlen)
+{
+ int type;
+ char const *p, *name;
+ home_server_t *home;
+ char buffer[1024];
+
+ if (outlen < 2) return 0;
+
+ switch (request->packet->code) {
+ case PW_CODE_ACCESS_REQUEST:
+ type = HOME_TYPE_AUTH;
+ break;
+
+#ifdef WITH_ACCOUNTING
+ case PW_CODE_ACCOUNTING_REQUEST:
+ type = HOME_TYPE_ACCT;
+ break;
+#endif
+
+#ifdef WITH_COA
+ case PW_CODE_COA_REQUEST:
+ case PW_CODE_DISCONNECT_REQUEST:
+ type = HOME_TYPE_COA;
+ break;
+#endif
+
+ default:
+ *out = '\0';
+ return 0;
+ }
+
+ p = fmt;
+ while (isspace((int) *p)) p++;
+
+ /*
+ * Allow for dynamic strings as arguments.
+ */
+ if (*p == '&') {
+ VALUE_PAIR *vp;
+
+ if ((radius_get_vp(&vp, request, p) < 0) || !vp ||
+ (vp->da->type != PW_TYPE_STRING)) {
+ return -1;
+ }
+ name = vp->vp_strvalue;
+
+ } else if (*p == '%') {
+ if (radius_xlat(buffer, sizeof(buffer), request, p, NULL, NULL) < 0) {
+ return -1;
+ }
+ name = buffer;
+
+ } else {
+ name = p;
+ }
+
+ home = home_server_byname(name, type);
+ if (!home) {
+ *out = '\0';
+ return 0;
+ }
+
+ /*
+ * 1 for dynamic, 0 for static
+ */
+ out[0] = '0' + home->dynamic;
+ out[1] = '\0';
+
+ return 1;
+}
+#endif
+
+void realms_free(void)
+{
+#ifdef WITH_PROXY
+# ifdef WITH_STATS
+ rbtree_free(home_servers_bynumber);
+ home_servers_bynumber = NULL;
+# endif
+
+ rbtree_free(home_servers_byname);
+ home_servers_byname = NULL;
+
+ rbtree_free(home_servers_byaddr);
+ home_servers_byaddr = NULL;
+
+ rbtree_free(home_pools_byname);
+ home_pools_byname = NULL;
+#endif
+
+ rbtree_free(realms_byname);
+ realms_byname = NULL;
+
+ realm_pool_free(NULL);
+
+ talloc_free(realm_config);
+ realm_config = NULL;
+}
+
+
+#ifdef WITH_PROXY
+static CONF_PARSER limit_config[] = {
+ { "max_connections", FR_CONF_OFFSET(PW_TYPE_INTEGER, home_server_t, limit.max_connections), "16" },
+ { "max_requests", FR_CONF_OFFSET(PW_TYPE_INTEGER, home_server_t, limit.max_requests), "0" },
+ { "lifetime", FR_CONF_OFFSET(PW_TYPE_INTEGER, home_server_t, limit.lifetime), "0" },
+ { "idle_timeout", FR_CONF_OFFSET(PW_TYPE_INTEGER, home_server_t, limit.idle_timeout), "0" },
+ CONF_PARSER_TERMINATOR
+};
+
+#ifdef WITH_COA
+static CONF_PARSER home_server_coa[] = {
+ { "irt", FR_CONF_OFFSET(PW_TYPE_INTEGER, home_server_t, coa_irt), STRINGIFY(2) },
+ { "mrt", FR_CONF_OFFSET(PW_TYPE_INTEGER, home_server_t, coa_mrt), STRINGIFY(16) },
+ { "mrc", FR_CONF_OFFSET(PW_TYPE_INTEGER, home_server_t, coa_mrc), STRINGIFY(5) },
+ { "mrd", FR_CONF_OFFSET(PW_TYPE_INTEGER, home_server_t, coa_mrd), STRINGIFY(30) },
+ CONF_PARSER_TERMINATOR
+};
+
+
+
+#ifdef WITH_COA_TUNNEL
+static CONF_PARSER home_server_recv_coa[] = {
+ { "virtual_server", FR_CONF_OFFSET(PW_TYPE_STRING, home_server_t, recv_coa_server), NULL },
+ CONF_PARSER_TERMINATOR
+};
+#endif
+
+#endif
+
+static CONF_PARSER home_server_config[] = {
+ { "ipaddr", FR_CONF_OFFSET(PW_TYPE_COMBO_IP_ADDR, home_server_t, ipaddr), NULL },
+ { "ipv4addr", FR_CONF_OFFSET(PW_TYPE_IPV4_ADDR, home_server_t, ipaddr), NULL },
+ { "ipv6addr", FR_CONF_OFFSET(PW_TYPE_IPV6_ADDR, home_server_t, ipaddr), NULL },
+ { "virtual_server", FR_CONF_OFFSET(PW_TYPE_STRING | PW_TYPE_NOT_EMPTY, home_server_t, virtual_server), NULL },
+
+ { "port", FR_CONF_OFFSET(PW_TYPE_SHORT, home_server_t, port), "0" },
+
+ { "type", FR_CONF_OFFSET(PW_TYPE_STRING, home_server_t, type_str), NULL },
+
+#ifdef WITH_TCP
+ { "proto", FR_CONF_OFFSET(PW_TYPE_STRING | PW_TYPE_NOT_EMPTY, home_server_t, proto_str), NULL },
+#endif
+
+ { "secret", FR_CONF_OFFSET(PW_TYPE_STRING | PW_TYPE_SECRET, home_server_t, secret), NULL },
+
+ { "src_ipaddr", FR_CONF_OFFSET(PW_TYPE_STRING, home_server_t, src_ipaddr_str), NULL },
+
+ { "response_window", FR_CONF_OFFSET(PW_TYPE_TIMEVAL, home_server_t, response_window), "30" },
+ { "response_timeouts", FR_CONF_OFFSET(PW_TYPE_INTEGER, home_server_t, max_response_timeouts), "1" },
+ { "max_outstanding", FR_CONF_OFFSET(PW_TYPE_INTEGER, home_server_t, max_outstanding), "65536" },
+
+ { "zombie_period", FR_CONF_OFFSET(PW_TYPE_INTEGER, home_server_t, zombie_period), "40" },
+
+ { "status_check", FR_CONF_OFFSET(PW_TYPE_STRING, home_server_t, ping_check_str), "none" },
+ { "ping_check", FR_CONF_OFFSET(PW_TYPE_STRING, home_server_t, ping_check_str), NULL },
+
+ { "ping_interval", FR_CONF_OFFSET(PW_TYPE_INTEGER, home_server_t, ping_interval), "30" },
+ { "check_interval", FR_CONF_OFFSET(PW_TYPE_INTEGER, home_server_t, ping_interval), NULL },
+
+ { "check_timeout", FR_CONF_OFFSET(PW_TYPE_INTEGER, home_server_t, ping_timeout), "4" },
+ { "status_check_timeout", FR_CONF_OFFSET(PW_TYPE_INTEGER, home_server_t, ping_timeout), NULL },
+
+ { "num_answers_to_alive", FR_CONF_OFFSET(PW_TYPE_INTEGER, home_server_t, num_pings_to_alive), "3" },
+ { "revive_interval", FR_CONF_OFFSET(PW_TYPE_INTEGER, home_server_t, revive_interval), "300" },
+
+ { "username", FR_CONF_OFFSET(PW_TYPE_STRING | PW_TYPE_NOT_EMPTY, home_server_t, ping_user_name), NULL },
+ { "password", FR_CONF_OFFSET(PW_TYPE_STRING | PW_TYPE_NOT_EMPTY, home_server_t, ping_user_password), NULL },
+
+#ifdef WITH_STATS
+ { "historic_average_window", FR_CONF_OFFSET(PW_TYPE_INTEGER, home_server_t, ema.window), NULL },
+#endif
+
+ { "limit", FR_CONF_POINTER(PW_TYPE_SUBSECTION, NULL), (void const *) limit_config },
+
+#ifdef WITH_COA
+ { "coa", FR_CONF_POINTER(PW_TYPE_SUBSECTION, NULL), (void const *) home_server_coa },
+#ifdef WITH_COA_TUNNEL
+ { "recv_coa", FR_CONF_POINTER(PW_TYPE_SUBSECTION, NULL), (void const *) home_server_recv_coa },
+#endif
+#endif
+
+ CONF_PARSER_TERMINATOR
+};
+
+
+static void null_free(UNUSED void *data)
+{
+}
+
+/*
+ * Ensure that all of the parameters in the home server are OK.
+ */
+void realm_home_server_sanitize(home_server_t *home, CONF_SECTION *cs)
+{
+ CONF_SECTION *parent = NULL;
+
+ FR_INTEGER_BOUND_CHECK("max_outstanding", home->max_outstanding, >=, 8);
+ FR_INTEGER_BOUND_CHECK("max_outstanding", home->max_outstanding, <=, 65536*16);
+
+ FR_INTEGER_BOUND_CHECK("ping_interval", home->ping_interval, >=, 6);
+ FR_INTEGER_BOUND_CHECK("ping_interval", home->ping_interval, <=, 120);
+
+ FR_TIMEVAL_BOUND_CHECK("response_window", &home->response_window, >=, 0, 1000);
+ FR_TIMEVAL_BOUND_CHECK("response_window", &home->response_window, <=,
+ main_config.max_request_time, 0);
+ FR_TIMEVAL_BOUND_CHECK("response_window", &home->response_window, <=, 60, 0);
+
+ FR_INTEGER_BOUND_CHECK("response_timeouts", home->max_response_timeouts, >=, 1);
+ FR_INTEGER_BOUND_CHECK("response_timeouts", home->max_response_timeouts, <=, 1000);
+
+ /*
+ * Track the minimum response window, so that we can
+ * correctly set the timers in process.c
+ */
+ if (timercmp(&main_config.init_delay, &home->response_window, >)) {
+ main_config.init_delay = home->response_window;
+ }
+
+ FR_INTEGER_BOUND_CHECK("zombie_period", home->zombie_period, >=, 1);
+ FR_INTEGER_BOUND_CHECK("zombie_period", home->zombie_period, <=, 120);
+ FR_INTEGER_BOUND_CHECK("zombie_period", home->zombie_period, >=, (uint32_t) home->response_window.tv_sec);
+
+ FR_INTEGER_BOUND_CHECK("num_pings_to_alive", home->num_pings_to_alive, >=, 3);
+ FR_INTEGER_BOUND_CHECK("num_pings_to_alive", home->num_pings_to_alive, <=, 10);
+
+ FR_INTEGER_BOUND_CHECK("check_timeout", home->ping_timeout, >=, 1);
+ FR_INTEGER_BOUND_CHECK("check_timeout", home->ping_timeout, <=, 10);
+
+ FR_INTEGER_BOUND_CHECK("revive_interval", home->revive_interval, >=, 10);
+ FR_INTEGER_BOUND_CHECK("revive_interval", home->revive_interval, <=, 3600);
+
+#ifdef WITH_COA
+ FR_INTEGER_BOUND_CHECK("coa_irt", home->coa_irt, >=, 1);
+ FR_INTEGER_BOUND_CHECK("coa_irt", home->coa_irt, <=, 5);
+
+ FR_INTEGER_BOUND_CHECK("coa_mrc", home->coa_mrc, <=, 20);
+
+ FR_INTEGER_BOUND_CHECK("coa_mrt", home->coa_mrt, <=, 30);
+
+ FR_INTEGER_BOUND_CHECK("coa_mrd", home->coa_mrd, >=, 5);
+ FR_INTEGER_BOUND_CHECK("coa_mrd", home->coa_mrd, <=, 60);
+#endif
+
+ FR_INTEGER_BOUND_CHECK("max_connections", home->limit.max_connections, <=, 1024);
+
+#ifdef WITH_TCP
+ /*
+ * UDP sockets can't be connection limited.
+ */
+ if (home->proto != IPPROTO_TCP) home->limit.max_connections = 0;
+#endif
+
+ if ((home->limit.idle_timeout > 0) && (home->limit.idle_timeout < 5))
+ home->limit.idle_timeout = 5;
+ if ((home->limit.lifetime > 0) && (home->limit.lifetime < 5))
+ home->limit.lifetime = 5;
+ if ((home->limit.lifetime > 0) && (home->limit.idle_timeout > home->limit.lifetime))
+ home->limit.idle_timeout = 0;
+
+ /*
+ * Make sure that this is set.
+ */
+ if (home->src_ipaddr.af == AF_UNSPEC) {
+ home->src_ipaddr.af = home->ipaddr.af;
+ }
+
+ parent = cf_item_parent(cf_section_to_item(cs));
+ if (parent && strcmp(cf_section_name1(parent), "server") == 0) {
+ home->parent_server = cf_section_name2(parent);
+ }
+}
+
+/** Insert a new home server into the various internal lookup trees
+ *
+ * @param home server to add.
+ * @param cs That defined the home server.
+ * @return true on success else false.
+ */
+static bool home_server_insert(home_server_t *home, CONF_SECTION *cs)
+{
+ if (home->name && !rbtree_insert(home_servers_byname, home)) {
+ cf_log_err_cs(cs, "Internal error %d adding home server %s", __LINE__, home->log_name);
+ return false;
+ }
+
+ if (!home->virtual_server && !rbtree_insert(home_servers_byaddr, home)) {
+ rbtree_deletebydata(home_servers_byname, home);
+ cf_log_err_cs(cs, "Internal error %d adding home server %s", __LINE__, home->log_name);
+ return false;
+ }
+
+#ifdef WITH_STATS
+ home->number = home_server_max_number++;
+ if (!rbtree_insert(home_servers_bynumber, home)) {
+ rbtree_deletebydata(home_servers_byname, home);
+ if (home->ipaddr.af != AF_UNSPEC) {
+ rbtree_deletebydata(home_servers_byname, home);
+ }
+ cf_log_err_cs(cs, "Internal error %d adding home server %s", __LINE__, home->log_name);
+ return false;
+ }
+#endif
+
+ return true;
+}
+
+/** Add an already allocate home_server_t to the various trees
+ *
+ * @param home server to add.
+ * @return true on success, else false on error.
+ */
+bool realm_home_server_add(home_server_t *home)
+{
+ /*
+ * The structs aren't mutex protected. Refuse to destroy
+ * the server.
+ */
+ if (event_loop_started && !realm_config->dynamic) {
+ ERROR("Failed to add dynamic home server, \"dynamic = yes\" must be set in proxy.conf");
+ return false;
+ }
+
+ if (home->name && (rbtree_finddata(home_servers_byname, home) != NULL)) {
+ cf_log_err_cs(home->cs, "Duplicate home server name %s", home->name);
+ return false;
+ }
+
+ if (!home->virtual_server && (rbtree_finddata(home_servers_byaddr, home) != NULL)) {
+ char buffer[INET6_ADDRSTRLEN + 3];
+
+ inet_ntop(home->ipaddr.af, &home->ipaddr.ipaddr, buffer, sizeof(buffer));
+
+ cf_log_err_cs(home->cs, "Duplicate home server address%s%s%s: %s:%s%s/%i",
+ home->name ? " (already in use by " : "",
+ home->name ? home->name : "",
+ home->name ? ")" : "",
+ buffer,
+ fr_int2str(home_proto, home->proto, "<INVALID>"),
+#ifdef WITH_TLS
+ home->tls ? "+tls" : "",
+#else
+ "",
+#endif
+ home->port);
+
+ return false;
+ }
+
+ if (!home_server_insert(home, home->cs)) return false;
+
+ /*
+ * Dual home servers cause us to auto-create an
+ * accounting server for UDP sockets, and leave
+ * everything alone for TLS sockets.
+ */
+ if (home->dual
+#ifdef WITH_TLS
+ && !home->tls
+#endif
+) {
+ home_server_t *home2 = talloc(talloc_parent(home), home_server_t);
+
+ memcpy(home2, home, sizeof(*home2));
+
+ home2->type = HOME_TYPE_ACCT;
+ home2->dual = true;
+ home2->port++;
+
+ home2->ping_user_password = NULL;
+ home2->cs = home->cs;
+ home2->parent_server = home->parent_server;
+
+ if (!home_server_insert(home2, home->cs)) {
+ talloc_free(home2);
+ return false;
+ }
+ }
+
+#ifdef WITH_COA_TUNNEL
+ if (home->recv_coa) {
+ if (!home->tls) {
+ ERROR("TLS is required in order to accept CoA requests from a home server");
+ return false;
+ }
+
+ if (!home->recv_coa_server) {
+ ERROR("A 'virtual_server' configuration is required in order to accept CoA requests from a home server");
+ return false;
+ }
+ }
+#endif
+
+ /*
+ * Mark it as already processed
+ */
+ cf_data_add(home->cs, "home_server", (void *)null_free, null_free);
+
+ return true;
+}
+
+/** Alloc a new home server defined by a CONF_SECTION
+ *
+ * @param ctx to allocate home_server_t in.
+ * @param rc Realm config, may be NULL in which case the global realm_config will be used.
+ * @param cs Configuration section containing home server parameters.
+ * @return a new home_server_t alloced in the context of the realm_config, or NULL on error.
+ */
+home_server_t *home_server_afrom_cs(TALLOC_CTX *ctx, realm_config_t *rc, CONF_SECTION *cs)
+{
+ home_server_t *home;
+ CONF_SECTION *tls;
+
+ if (!rc) rc = realm_config; /* Use the global config */
+
+ home = talloc_zero(ctx, home_server_t);
+ home->name = cf_section_name2(cs);
+ home->log_name = talloc_typed_strdup(home, home->name);
+ home->cs = cs;
+ home->state = HOME_STATE_UNKNOWN;
+ home->proto = IPPROTO_UDP;
+
+ /*
+ * Parse the configuration into the home server
+ * struct.
+ */
+ if (cf_section_parse(cs, home, home_server_config) < 0) goto error;
+
+ /*
+ * It has an IP address, it must be a remote server.
+ */
+ if (cf_pair_find(cs, "ipaddr") || cf_pair_find(cs, "ipv4addr") || cf_pair_find(cs, "ipv6addr")) {
+ if (fr_inaddr_any(&home->ipaddr) == 1) {
+ cf_log_err_cs(cs, "Wildcard '*' addresses are not permitted for home servers");
+ goto error;
+ }
+
+ if (!home->log_name) {
+ char buffer[INET6_ADDRSTRLEN + 3];
+
+ fr_ntop(buffer, sizeof(buffer), &home->ipaddr);
+
+ home->log_name = talloc_asprintf(home, "%s:%i", buffer, home->port);
+ }
+ /*
+ * If it has a 'virtual_Server' config item, it's
+ * a loopback into a virtual server.
+ */
+ } else if (cf_pair_find(cs, "virtual_server") != NULL) {
+ home->ipaddr.af = AF_UNSPEC; /* mark ipaddr as unused */
+
+ if (!home->virtual_server) {
+ cf_log_err_cs(cs, "Invalid value for virtual_server");
+ goto error;
+ }
+
+ /*
+ * Try and find a "server" section off the root of
+ * the config with a name that matches the
+ * virtual_server.
+ */
+ if (!rc) goto error;
+
+ if (!cf_section_sub_find_name2(rc->cs, "server", home->virtual_server)) {
+ cf_log_err_cs(cs, "No such server %s", home->virtual_server);
+ goto error;
+ }
+
+ home->secret = "";
+ home->log_name = talloc_typed_strdup(home, home->virtual_server);
+ /*
+ * Otherwise it's an invalid config section and we
+ * raise an error.
+ */
+ } else {
+ cf_log_err_cs(cs, "No ipaddr, ipv4addr, ipv6addr, or virtual_server defined "
+ "for home server");
+ error:
+ talloc_free(home);
+ return false;
+ }
+
+ {
+ home_type_t type = HOME_TYPE_AUTH_ACCT;
+
+ if (home->type_str) type = fr_str2int(home_server_types, home->type_str, HOME_TYPE_INVALID);
+
+ home->type = type;
+
+ switch (type) {
+ case HOME_TYPE_AUTH_ACCT:
+ home->dual = true;
+ break;
+
+ case HOME_TYPE_AUTH:
+ case HOME_TYPE_ACCT:
+ break;
+
+#ifdef WITH_COA
+ case HOME_TYPE_COA:
+ if (home->virtual_server != NULL) {
+ cf_log_err_cs(cs, "Home servers of type \"coa\" cannot point to a virtual server");
+ goto error;
+ }
+ break;
+
+#ifdef WITH_COA_TUNNEL
+ case HOME_TYPE_AUTH_ACCT_COA:
+ home->dual = true;
+ home->recv_coa = true;
+ break;
+
+ case HOME_TYPE_AUTH_COA:
+ home->recv_coa = true;
+ break;
+#endif
+#endif
+
+ case HOME_TYPE_INVALID:
+ cf_log_err_cs(cs, "Invalid type \"%s\" for home server %s", home->type_str, home->log_name);
+ goto error;
+ }
+ }
+
+ {
+ home_ping_check_t type = HOME_PING_CHECK_NONE;
+
+ if (home->ping_check_str) type = fr_str2int(home_ping_check, home->ping_check_str,
+ HOME_PING_CHECK_INVALID);
+
+ switch (type) {
+ case HOME_PING_CHECK_STATUS_SERVER:
+ case HOME_PING_CHECK_NONE:
+ break;
+
+ case HOME_PING_CHECK_REQUEST:
+ if (!home->ping_user_name) {
+ cf_log_err_cs(cs, "You must supply a 'username' to enable status_check=request");
+ goto error;
+ }
+
+ if (((home->type == HOME_TYPE_AUTH) ||
+#ifdef WITH_COA_TUNNEL
+ (home->type == HOME_TYPE_AUTH_COA) ||
+ (home->type == HOME_TYPE_AUTH_ACCT_COA) ||
+#endif
+ (home->type == HOME_TYPE_AUTH_ACCT)) && !home->ping_user_password) {
+ cf_log_err_cs(cs, "You must supply a 'password' to enable status_check=request");
+ goto error;
+ }
+
+ break;
+
+ case HOME_PING_CHECK_INVALID:
+ cf_log_err_cs(cs, "Invalid status_check \"%s\" for home server %s",
+ home->ping_check_str, home->log_name);
+ goto error;
+ }
+
+ home->ping_check = type;
+ }
+
+ {
+ int proto = IPPROTO_UDP;
+
+ if (home->proto_str) proto = fr_str2int(home_proto, home->proto_str, -1);
+
+ switch (proto) {
+ case IPPROTO_UDP:
+#ifdef WITH_TCP
+ home_servers_udp = true;
+#endif
+ break;
+
+ case IPPROTO_TCP:
+#ifndef WITH_TCP
+ cf_log_err_cs(cs, "Server not built with support for RADIUS over TCP");
+ goto error;
+#endif
+ if ((home->ping_check != HOME_PING_CHECK_NONE) &&
+ (home->ping_check != HOME_PING_CHECK_STATUS_SERVER)) {
+ cf_log_err_cs(cs, "Only 'status_check = status-server' is allowed for home "
+ "servers with 'proto = tcp'");
+ goto error;
+ }
+ break;
+
+ default:
+ cf_log_err_cs(cs, "Unknown proto \"%s\"", home->proto_str);
+ goto error;
+ }
+
+ home->proto = proto;
+ }
+
+ if (!home->virtual_server && rbtree_finddata(home_servers_byaddr, home)) {
+ cf_log_err_cs(cs, "Duplicate home server");
+ goto error;
+ }
+
+ /*
+ * Check the TLS configuration.
+ */
+ tls = cf_section_sub_find(cs, "tls");
+#ifndef WITH_TLS
+ if (tls) {
+ cf_log_err_cs(cs, "TLS transport is not available in this executable");
+ goto error;
+ }
+#endif
+
+ /*
+ * Check the reverse CoA configuration.
+ */
+#ifdef WITH_COA_TUNNEL
+ if (home->recv_coa) {
+ if (!tls) {
+ ERROR("TLS is required in order to accept CoA requests from a home server");
+ goto error;
+ }
+
+ if (!home->recv_coa_server) {
+ ERROR("A 'virtual_server' configuration is required in order to accept CoA requests from a home server");
+ goto error;
+ }
+
+ /*
+ * Try and find a 'server' section off the root of
+ * the config with a name that matches the coa
+ * virtual_server.
+ */
+ if (!rc) {
+ ERROR("Dynamic home servers cannot accept CoA requests");
+ goto error;
+ }
+
+ if (!cf_section_sub_find_name2(rc->cs, "server", home->recv_coa_server)) {
+ cf_log_err_cs(cs, "No such coa server %s", home->recv_coa_server);
+ goto error;
+ }
+ }
+#endif
+
+ /*
+ * If were doing RADSEC (tls+tcp) the secret should default
+ * to radsec, else a secret must be set.
+ */
+ if (!home->secret) {
+#ifdef WITH_TLS
+ if (tls && (home->proto == IPPROTO_TCP)) {
+ home->secret = "radsec";
+ } else
+#endif
+ {
+ cf_log_err_cs(cs, "No shared secret defined for home server %s", home->log_name);
+ goto error;
+ }
+ }
+
+ /*
+ * Virtual servers have some TLS restrictions.
+ */
+ if (home->virtual_server) {
+ if (tls) {
+ cf_log_err_cs(cs, "Virtual home_servers cannot have a \"tls\" subsection");
+ goto error;
+ }
+ } else {
+ /*
+ * If the home is not a virtual server, guess the port
+ * and look up the source ip address.
+ */
+ rad_assert(home->ipaddr.af != AF_UNSPEC);
+
+#ifdef WITH_TLS
+ if (tls && (home->proto != IPPROTO_TCP)) {
+ cf_log_err_cs(cs, "TLS transport is not available for UDP sockets");
+ goto error;
+ }
+#endif
+
+ /*
+ * Set the default port if necessary.
+ */
+ if (home->port == 0) {
+ char buffer[INET6_ADDRSTRLEN + 3];
+
+ /*
+ * For RADSEC we use the special RADIUS over TCP/TLS port
+ * for both accounting and authentication, but for some
+ * bizarre reason for RADIUS over plain TCP we use separate
+ * ports 1812 and 1813.
+ */
+#ifdef WITH_TLS
+ if (tls) {
+ home->port = PW_RADIUS_TLS_PORT;
+ } else
+#endif
+ switch (home->type) {
+ default:
+ rad_assert(0);
+ /* FALL-THROUGH */
+
+ /*
+ * One is added to get the accounting port
+ * for home->dual.
+ */
+ case HOME_TYPE_AUTH_ACCT:
+ case HOME_TYPE_AUTH:
+ home->port = PW_AUTH_UDP_PORT;
+ break;
+
+ case HOME_TYPE_ACCT:
+ home->port = PW_ACCT_UDP_PORT;
+ break;
+
+ case HOME_TYPE_COA:
+ home->port = PW_COA_UDP_PORT;
+ break;
+ }
+
+ /*
+ * Now that we have a real port, use that.
+ */
+ rad_const_free(home->log_name);
+
+ fr_ntop(buffer, sizeof(buffer), &home->ipaddr);
+
+ home->log_name = talloc_asprintf(home, "%s:%i", buffer, home->port);
+ }
+
+ /*
+ * If we have a src_ipaddr_str resolve it to
+ * the same address family as the destination
+ * IP.
+ */
+ if (home->src_ipaddr_str) {
+ if (ip_hton(&home->src_ipaddr, home->ipaddr.af, home->src_ipaddr_str, false) < 0) {
+ cf_log_err_cs(cs, "Failed parsing src_ipaddr");
+ goto error;
+ }
+ /*
+ * Source isn't specified, set it to the
+ * correct address family, but leave it as
+ * zeroes.
+ */
+ } else {
+ home->src_ipaddr.af = home->ipaddr.af;
+ }
+
+#ifdef WITH_TLS
+ /*
+ * Parse the SSL client configuration.
+ */
+ if (tls) {
+ int rcode;
+
+ home->tls = tls_client_conf_parse(tls);
+ if (!home->tls) {
+ goto error;
+ }
+
+ /*
+ * Connection timeouts for outgoing TLS connections.
+ */
+
+ rcode = cf_item_parse(tls, "connect_timeout", FR_ITEM_POINTER(PW_TYPE_INTEGER, &home->connect_timeout), NULL);
+ if (rcode < 0) goto error;
+
+ if (!home->connect_timeout || (home->connect_timeout > 30)) home->connect_timeout = 30;
+ }
+#endif
+ } /* end of parse home server */
+
+ realm_home_server_sanitize(home, cs);
+
+ return home;
+}
+
+/** Fixup a client configuration section to specify a home server
+ *
+ * This is used to create the equivalent CoA home server entry for a client,
+ * so that the server can originate CoA messages.
+ *
+ * The server section automatically inherits the following fields from the client:
+ * - ipaddr/ipv4addr/ipv6addr
+ * - secret
+ * - src_ipaddr
+ *
+ * @note new CONF_SECTION will be allocated in the context of the client, but the client
+ * CONF_SECTION will not be modified.
+ *
+ * @param client CONF_SECTION to inherit values from.
+ * @return a new server CONF_SCTION, or a pointer to the existing CONF_SECTION in the client.
+ */
+CONF_SECTION *home_server_cs_afrom_client(CONF_SECTION *client)
+{
+ CONF_SECTION *server, *cs;
+ CONF_PAIR *cp;
+
+ /*
+ * Alloc a plain home server for both cases
+ *
+ * There's no way these can be referenced by a pool,
+ * and they may conflict with home servers in proxy.conf
+ * so it's easier to not set a name.
+ */
+
+ /*
+ *
+ * Duplicate the server section, so we don't mangle
+ * the client CONF_SECTION we were passed.
+ */
+ cs = cf_section_sub_find(client, "coa_server");
+ if (cs) {
+ server = cf_section_dup(client, cs, "home_server", NULL, true);
+ } else {
+ server = cf_section_alloc(client, "home_server", cf_section_name2(client));
+ }
+
+ if (!cs || (!cf_pair_find(cs, "ipaddr") && !cf_pair_find(cs, "ipv4addr") && !cf_pair_find(cs, "ipv6addr"))) {
+ cp = cf_pair_find(client, "ipaddr");
+ if (!cp) cp = cf_pair_find(client, "ipv4addr");
+ if (!cp) cp = cf_pair_find(client, "ipv6addr");
+
+ cf_pair_add(server, cf_pair_dup(server, cp));
+ }
+
+ if (!cs || !cf_pair_find(cs, "secret")) {
+ cp = cf_pair_find(client, "secret");
+ if (cp) cf_pair_add(server, cp);
+ }
+
+ if (!cs || !cf_pair_find(cs, "src_ipaddr")) {
+ cp = cf_pair_find(client, "src_ipaddr");
+ if (cp) cf_pair_add(server, cf_pair_dup(server, cp));
+ }
+
+ if (!cs || !(cp = cf_pair_find(cs, "type"))) {
+ cp = cf_pair_alloc(server, "type", "coa", T_OP_EQ, T_BARE_WORD, T_SINGLE_QUOTED_STRING);
+ if (cp) cf_pair_add(server, cf_pair_dup(server, cp));
+ } else if (strcmp(cf_pair_value(cp), "coa") != 0) {
+ talloc_free(server);
+ cf_log_err_cs(server, "server.type must be \"coa\"");
+ return NULL;
+ }
+
+ return server;
+}
+
+static home_pool_t *server_pool_alloc(char const *name, home_pool_type_t type,
+ home_type_t server_type, int num_home_servers)
+{
+ home_pool_t *pool;
+
+ pool = rad_malloc(sizeof(*pool) + (sizeof(pool->servers[0]) * num_home_servers));
+ if (!pool) return NULL; /* just for pairanoia */
+
+ memset(pool, 0, sizeof(*pool) + (sizeof(pool->servers[0]) * num_home_servers));
+
+ pool->name = name;
+ pool->type = type;
+ pool->server_type = server_type;
+ pool->num_home_servers = num_home_servers;
+
+ return pool;
+}
+
+/*
+ * Ensure any home_server clauses in a home_server_pool section reference
+ * defined home servers, which should already have been created, regardless
+ * of where they appear in the configuration.
+ */
+static int pool_check_home_server(UNUSED realm_config_t *rc, CONF_PAIR *cp,
+ char const *name, home_type_t server_type,
+ home_server_t **phome)
+{
+ home_server_t myhome, *home;
+
+ if (!name) {
+ cf_log_err_cp(cp,
+ "No value given for home_server");
+ return 0;
+ }
+
+ myhome.name = name;
+ myhome.type = server_type;
+ home = rbtree_finddata(home_servers_byname, &myhome);
+ if (home) {
+ *phome = home;
+ return 1;
+ }
+
+ switch (server_type) {
+ case HOME_TYPE_AUTH:
+ case HOME_TYPE_ACCT:
+ myhome.type = HOME_TYPE_AUTH_ACCT;
+ home = rbtree_finddata(home_servers_byname, &myhome);
+#ifdef WITH_COA_TUNNEL
+ if (!home) {
+ myhome.type = HOME_TYPE_AUTH_COA;
+ home = rbtree_finddata(home_servers_byname, &myhome);
+ if(!home) {
+ myhome.type = HOME_TYPE_AUTH_ACCT_COA;
+ home = rbtree_finddata(home_servers_byname, &myhome);
+ }
+ }
+#endif
+ if (home) {
+ *phome = home;
+ return 1;
+ }
+ break;
+
+ default:
+ break;
+ }
+
+ cf_log_err_cp(cp, "Unknown home_server \"%s\".", name);
+ return 0;
+}
+
+
+#ifndef HAVE_PTHREAD_H
+void realm_pool_free(home_pool_t *pool)
+{
+ if (!event_loop_started) return;
+ if (!realm_config->dynamic) return;
+
+ talloc_free(pool);
+}
+#else /* HAVE_PTHREAD_H */
+typedef struct pool_list_t pool_list_t;
+
+struct pool_list_t {
+ pool_list_t *next;
+ home_pool_t *pool;
+ time_t when;
+};
+
+static bool pool_free_init = false;
+static pthread_mutex_t pool_free_mutex;
+static pool_list_t *pool_list = NULL;
+
+void realm_pool_free(home_pool_t *pool)
+{
+ int i;
+ time_t now;
+ pool_list_t *this, **last;
+
+ if (!event_loop_started) return;
+ if (!realm_config->dynamic) return;
+
+ if (pool) {
+ /*
+ * Double-check that the realm wasn't loaded from the
+ * configuration files.
+ */
+ for (i = 0; i < pool->num_home_servers; i++) {
+ if (pool->servers[i]->cs) {
+ rad_assert(0 == 1);
+ return;
+ }
+ }
+ }
+
+ if (!pool_free_init) {
+ pthread_mutex_init(&pool_free_mutex, NULL);
+ pool_free_init = true;
+ }
+
+ /*
+ * Ensure only one caller at a time is freeing a pool.
+ */
+ pthread_mutex_lock(&pool_free_mutex);
+
+ /*
+ * Free all of the pools.
+ */
+ if (!pool) {
+ while ((this = pool_list) != NULL) {
+ pool_list = this->next;
+ talloc_free(this->pool);
+ talloc_free(this);
+ }
+ pthread_mutex_unlock(&pool_free_mutex);
+ return;
+ }
+
+ now = time(NULL);
+
+ /*
+ * Free the oldest pool(s)
+ */
+ while ((this = pool_list) != NULL) {
+ if (this->when > now) break;
+
+ pool_list = this->next;
+ talloc_free(this->pool);
+ talloc_free(this);
+ }
+
+ /*
+ * Add this pool to the end of the list.
+ */
+ for (last = &pool_list;
+ *last != NULL;
+ last = &((*last))->next) {
+ /* do nothing */
+ }
+
+ *last = this = talloc(NULL, pool_list_t);
+ if (!this) {
+ talloc_free(pool); /* hope for the best */
+ pthread_mutex_unlock(&pool_free_mutex);
+ return;
+ }
+
+ this->next = NULL;
+ this->when = now + 300;
+ this->pool = pool;
+ pthread_mutex_unlock(&pool_free_mutex);
+}
+#endif /* HAVE_PTHREAD_H */
+
+int realm_pool_add(home_pool_t *pool, UNUSED CONF_SECTION *cs)
+{
+ /*
+ * The structs aren't mutex protected. Refuse to destroy
+ * the server.
+ */
+ if (event_loop_started && !realm_config->dynamic) {
+ DEBUG("Must set \"dynamic = true\" in proxy.conf");
+ return 0;
+ }
+
+ if (!rbtree_insert(home_pools_byname, pool)) {
+ rad_assert("Internal sanity check failed" == NULL);
+ return 0;
+ }
+
+ return 1;
+}
+
+static int server_pool_add(realm_config_t *rc,
+ CONF_SECTION *cs, home_type_t server_type, bool do_print)
+{
+ char const *name2;
+ home_pool_t *pool = NULL;
+ char const *value;
+ CONF_PAIR *cp;
+ int num_home_servers;
+ home_server_t *home;
+
+ name2 = cf_section_name1(cs);
+ if (!name2 || ((strcasecmp(name2, "server_pool") != 0) &&
+ (strcasecmp(name2, "home_server_pool") != 0))) {
+ cf_log_err_cs(cs,
+ "Section is not a home_server_pool");
+ return 0;
+ }
+
+ name2 = cf_section_name2(cs);
+ if (!name2) {
+ cf_log_err_cs(cs,
+ "Server pool section is missing a name");
+ return 0;
+ }
+
+ /*
+ * Count the home servers and initalize them.
+ */
+ num_home_servers = 0;
+ for (cp = cf_pair_find(cs, "home_server");
+ cp != NULL;
+ cp = cf_pair_find_next(cs, cp, "home_server")) {
+ num_home_servers++;
+
+ if (!pool_check_home_server(rc, cp, cf_pair_value(cp),
+ server_type, &home)) {
+ return 0;
+ }
+ }
+
+ if (num_home_servers == 0) {
+ cf_log_err_cs(cs,
+ "No home servers defined in pool %s",
+ name2);
+ goto error;
+ }
+
+ pool = server_pool_alloc(name2, HOME_POOL_FAIL_OVER, server_type,
+ num_home_servers);
+ if (!pool) {
+ cf_log_err_cs(cs, "Failed allocating memory for pool");
+ goto error;
+ }
+ pool->cs = cs;
+
+
+ /*
+ * Fallback servers must be defined, and must be
+ * virtual servers.
+ */
+ cp = cf_pair_find(cs, "fallback");
+ if (cp) {
+#ifdef WITH_COA
+ if (server_type == HOME_TYPE_COA) {
+ cf_log_err_cs(cs, "Home server pools of type \"coa\" cannot have a fallback virtual server");
+ goto error;
+ }
+#endif
+
+ if (!pool_check_home_server(rc, cp, cf_pair_value(cp), server_type, &pool->fallback)) {
+ goto error;
+ }
+
+ if (!pool->fallback->virtual_server) {
+ cf_log_err_cs(cs, "Fallback home_server %s does NOT contain a virtual_server directive",
+ pool->fallback->log_name);
+ goto error;
+ }
+ }
+
+ if (do_print) cf_log_info(cs, " home_server_pool %s {", name2);
+
+ cp = cf_pair_find(cs, "type");
+ if (cp) {
+ static FR_NAME_NUMBER pool_types[] = {
+ { "load-balance", HOME_POOL_LOAD_BALANCE },
+
+ { "fail-over", HOME_POOL_FAIL_OVER },
+ { "fail_over", HOME_POOL_FAIL_OVER },
+
+ { "round-robin", HOME_POOL_LOAD_BALANCE },
+ { "round_robin", HOME_POOL_LOAD_BALANCE },
+
+ { "client-balance", HOME_POOL_CLIENT_BALANCE },
+ { "client-port-balance", HOME_POOL_CLIENT_PORT_BALANCE },
+ { "keyed-balance", HOME_POOL_KEYED_BALANCE },
+ { NULL, 0 }
+ };
+
+ value = cf_pair_value(cp);
+ if (!value) {
+ cf_log_err_cp(cp,
+ "No value given for type");
+ goto error;
+ }
+
+ pool->type = fr_str2int(pool_types, value, 0);
+ if (!pool->type) {
+ cf_log_err_cp(cp,
+ "Unknown type \"%s\".",
+ value);
+ goto error;
+ }
+
+ if (do_print) cf_log_info(cs, "\ttype = %s", value);
+ }
+
+ cp = cf_pair_find(cs, "virtual_server");
+ if (cp) {
+ pool->virtual_server = cf_pair_value(cp);
+ if (!pool->virtual_server) {
+ cf_log_err_cp(cp, "No value given for virtual_server");
+ goto error;
+ }
+
+ if (do_print) {
+ cf_log_info(cs, "\tvirtual_server = %s", pool->virtual_server);
+ }
+
+ if (!cf_section_sub_find_name2(rc->cs, "server", pool->virtual_server)) {
+ cf_log_err_cp(cp, "No such server %s", pool->virtual_server);
+ goto error;
+ }
+
+ }
+
+ num_home_servers = 0;
+ for (cp = cf_pair_find(cs, "home_server");
+ cp != NULL;
+ cp = cf_pair_find_next(cs, cp, "home_server")) {
+ home_server_t myhome;
+
+ value = cf_pair_value(cp);
+
+ memset(&myhome, 0, sizeof(myhome));
+ myhome.name = value;
+ myhome.type = server_type;
+
+ home = rbtree_finddata(home_servers_byname, &myhome);
+ if (!home) {
+ switch (server_type) {
+ case HOME_TYPE_AUTH:
+ case HOME_TYPE_ACCT:
+ myhome.type = HOME_TYPE_AUTH_ACCT;
+ home = rbtree_finddata(home_servers_byname, &myhome);
+#ifdef WITH_COA_TUNNEL
+ if (!home) {
+ myhome.type = HOME_TYPE_AUTH_COA;
+ home = rbtree_finddata(home_servers_byname, &myhome);
+ if (!home) {
+ myhome.type = HOME_TYPE_AUTH_ACCT_COA;
+ home = rbtree_finddata(home_servers_byname, &myhome);
+ }
+ }
+#endif
+ break;
+
+ default:
+ break;
+ }
+ }
+
+ if (!home) {
+ ERROR("Failed to find home server %s", value);
+ goto error;
+ }
+
+ if (do_print) cf_log_info(cs, "\thome_server = %s", home->name);
+ pool->servers[num_home_servers++] = home;
+ } /* loop over home_server's */
+
+ if (pool->fallback && do_print) {
+ cf_log_info(cs, "\tfallback = %s", pool->fallback->name);
+ }
+
+ if (!realm_pool_add(pool, cs)) goto error;
+
+ if (do_print) cf_log_info(cs, " }");
+
+ cf_data_add(cs, "home_server_pool", pool, free);
+
+ rad_assert(pool->server_type != 0);
+
+ return 1;
+
+ error:
+ if (do_print) cf_log_info(cs, " }");
+ free(pool);
+ return 0;
+}
+#endif
+
+static int old_server_add(realm_config_t *rc, CONF_SECTION *cs,
+ char const *realm,
+ char const *name, char const *secret,
+ home_pool_type_t ldflag, home_pool_t **pool_p,
+ home_type_t type, char const *server)
+{
+#ifdef WITH_PROXY
+ int i, insert_point, num_home_servers;
+ home_server_t myhome, *home;
+ home_pool_t mypool, *pool;
+ CONF_SECTION *subcs;
+#else
+ (void) rc; /* -Wunused */
+ (void) realm;
+ (void) secret;
+ (void) ldflag;
+ (void) type;
+ (void) server;
+#endif
+
+ /*
+ * LOCAL realms get sanity checked, and nothing else happens.
+ */
+ if (strcmp(name, "LOCAL") == 0) {
+ if (*pool_p) {
+ cf_log_err_cs(cs, "Realm \"%s\" cannot be both LOCAL and remote", name);
+ return 0;
+ }
+ return 1;
+ }
+
+#ifndef WITH_PROXY
+ return 0; /* Not proxying. Can't do non-LOCAL realms */
+
+#else
+ mypool.name = realm;
+ mypool.server_type = type;
+ pool = rbtree_finddata(home_pools_byname, &mypool);
+ if (pool) {
+ if (pool->type != ldflag) {
+ cf_log_err_cs(cs, "Inconsistent ldflag for server pool \"%s\"", name);
+ return 0;
+ }
+
+ if (pool->server_type != type) {
+ cf_log_err_cs(cs, "Inconsistent home server type for server pool \"%s\"", name);
+ return 0;
+ }
+ }
+
+ myhome.name = name;
+ myhome.type = type;
+ home = rbtree_finddata(home_servers_byname, &myhome);
+ if (home) {
+ WARN("Please use pools instead of authhost and accthost");
+
+ if (secret && (strcmp(home->secret, secret) != 0)) {
+ cf_log_err_cs(cs, "Inconsistent shared secret for home server \"%s\"", name);
+ return 0;
+ }
+
+ if (home->type != type) {
+ cf_log_err_cs(cs, "Inconsistent type for home server \"%s\"", name);
+ return 0;
+ }
+
+ /*
+ * Don't check for duplicate home servers. If
+ * the user specifies that, well, they can do it.
+ *
+ * Allowing duplicates means that all of the
+ * realm->server[] entries are filled, which is
+ * what the rest of the code assumes.
+ */
+ }
+
+ /*
+ * If we do have a pool, check that there is room to
+ * insert the home server we've found, or the one that we
+ * create here.
+ *
+ * Note that we insert it into the LAST available
+ * position, in order to maintain the same order as in
+ * the configuration files.
+ */
+ insert_point = -1;
+ if (pool) {
+ for (i = pool->num_home_servers - 1; i >= 0; i--) {
+ if (pool->servers[i]) break;
+
+ if (!pool->servers[i]) {
+ insert_point = i;
+ }
+ }
+
+ if (insert_point < 0) {
+ 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);
+ return 0;
+ }
+ }
+
+ /*
+ * No home server, allocate one.
+ */
+ if (!home) {
+ char const *p;
+ char *q;
+
+ home = talloc_zero(rc, home_server_t);
+ home->name = name;
+ home->type = type;
+ home->secret = secret;
+ home->cs = cs;
+ home->proto = IPPROTO_UDP;
+
+ p = strchr(name, ':');
+ if (!p) {
+ if (type == HOME_TYPE_AUTH) {
+ home->port = PW_AUTH_UDP_PORT;
+ } else {
+ home->port = PW_ACCT_UDP_PORT;
+ }
+
+ p = name;
+ q = NULL;
+
+ } else if (p == name) {
+ cf_log_err_cs(cs, "Invalid hostname %s", name);
+ talloc_free(home);
+ return 0;
+ } else {
+ unsigned long port = strtoul(p + 1, NULL, 0);
+ if ((port == 0) || (port > 65535)) {
+ cf_log_err_cs(cs, "Invalid port %s", p + 1);
+ talloc_free(home);
+ return 0;
+ }
+
+ home->port = (uint16_t)port;
+ q = talloc_array(home, char, (p - name) + 1);
+ memcpy(q, name, (p - name));
+ q[p - name] = '\0';
+ p = q;
+ }
+
+ if (!server) {
+ if (ip_hton(&home->ipaddr, AF_UNSPEC, p, false) < 0) {
+ cf_log_err_cs(cs,
+ "Failed looking up hostname %s.",
+ p);
+ talloc_free(home);
+ talloc_free(q);
+ return 0;
+ }
+ home->src_ipaddr.af = home->ipaddr.af;
+ } else {
+ home->ipaddr.af = AF_UNSPEC;
+ home->virtual_server = server;
+ }
+ talloc_free(q);
+
+ /*
+ * Use the old-style configuration.
+ */
+ home->max_outstanding = 65535*16;
+ home->zombie_period = rc->retry_delay * rc->retry_count;
+ if (home->zombie_period < 2) home->zombie_period = 30;
+ home->response_window.tv_sec = home->zombie_period - 1;
+ home->response_window.tv_usec = 0;
+
+ home->ping_check = HOME_PING_CHECK_NONE;
+
+ home->revive_interval = rc->dead_time;
+
+ if (rbtree_finddata(home_servers_byaddr, home)) {
+ cf_log_err_cs(cs, "Home server %s has the same IP address and/or port as another home server.", name);
+ talloc_free(home);
+ return 0;
+ }
+
+ if (!rbtree_insert(home_servers_byname, home)) {
+ cf_log_err_cs(cs, "Internal error %d adding home server %s.", __LINE__, name);
+ talloc_free(home);
+ return 0;
+ }
+
+ if (!rbtree_insert(home_servers_byaddr, home)) {
+ rbtree_deletebydata(home_servers_byname, home);
+ cf_log_err_cs(cs, "Internal error %d adding home server %s.", __LINE__, name);
+ talloc_free(home);
+ return 0;
+ }
+
+#ifdef WITH_STATS
+ home->number = home_server_max_number++;
+ if (!rbtree_insert(home_servers_bynumber, home)) {
+ rbtree_deletebydata(home_servers_byname, home);
+ if (home->ipaddr.af != AF_UNSPEC) {
+ rbtree_deletebydata(home_servers_byname, home);
+ }
+ cf_log_err_cs(cs,
+ "Internal error %d adding home server %s.",
+ __LINE__, name);
+ talloc_free(home);
+ return 0;
+ }
+#endif
+ }
+
+ /*
+ * We now have a home server, see if we can insert it
+ * into pre-existing pool.
+ */
+ if (insert_point >= 0) {
+ rad_assert(pool != NULL);
+ pool->servers[insert_point] = home;
+ return 1;
+ }
+
+ rad_assert(pool == NULL);
+ rad_assert(home != NULL);
+
+ /*
+ * Count the old-style realms of this name.
+ */
+ num_home_servers = 0;
+ for (subcs = cf_section_find_next(cs, NULL, "realm");
+ subcs != NULL;
+ subcs = cf_section_find_next(cs, subcs, "realm")) {
+ char const *this = cf_section_name2(subcs);
+
+ if (!this || (strcmp(this, realm) != 0)) continue;
+ num_home_servers++;
+ }
+
+ if (num_home_servers == 0) {
+ cf_log_err_cs(cs, "Internal error counting pools for home server %s.", name);
+ talloc_free(home);
+ return 0;
+ }
+
+ pool = server_pool_alloc(realm, ldflag, type, num_home_servers);
+ if (!pool) {
+ cf_log_err_cs(cs, "Out of memory");
+ return 0;
+ }
+
+ pool->cs = cs;
+
+ pool->servers[0] = home;
+
+ if (!rbtree_insert(home_pools_byname, pool)) {
+ rad_assert("Internal sanity check failed" == NULL);
+ return 0;
+ }
+
+ *pool_p = pool;
+
+ return 1;
+#endif
+}
+
+static int old_realm_config(realm_config_t *rc, CONF_SECTION *cs, REALM *r)
+{
+ char const *host;
+ char const *secret = NULL;
+ home_pool_type_t ldflag;
+ CONF_PAIR *cp;
+
+ cp = cf_pair_find(cs, "ldflag");
+ ldflag = HOME_POOL_FAIL_OVER;
+ if (cp) {
+ host = cf_pair_value(cp);
+ if (!host) {
+ cf_log_err_cp(cp, "No value specified for ldflag");
+ return 0;
+ }
+
+ if (strcasecmp(host, "fail_over") == 0) {
+ cf_log_info(cs, "\tldflag = fail_over");
+
+ } else if (strcasecmp(host, "round_robin") == 0) {
+ ldflag = HOME_POOL_LOAD_BALANCE;
+ cf_log_info(cs, "\tldflag = round_robin");
+
+ } else {
+ cf_log_err_cs(cs, "Unknown value \"%s\" for ldflag", host);
+ return 0;
+ }
+ } /* else don't print it. */
+
+ /*
+ * Allow old-style if it doesn't exist, or if it exists and
+ * it's LOCAL.
+ */
+ cp = cf_pair_find(cs, "authhost");
+ if (cp) {
+ host = cf_pair_value(cp);
+ if (!host) {
+ cf_log_err_cp(cp, "No value specified for authhost");
+ return 0;
+ }
+
+ if (strcmp(host, "LOCAL") != 0) {
+ cp = cf_pair_find(cs, "secret");
+ if (!cp) {
+ cf_log_err_cs(cs, "No shared secret supplied for realm: %s", r->name);
+ return 0;
+ }
+
+ secret = cf_pair_value(cp);
+ if (!secret) {
+ cf_log_err_cp(cp, "No value specified for secret");
+ return 0;
+ }
+ }
+
+ cf_log_info(cs, "\tauthhost = %s", host);
+
+ if (!old_server_add(rc, cs, r->name, host, secret, ldflag,
+ &r->auth_pool, HOME_TYPE_AUTH, NULL)) {
+ return 0;
+ }
+ }
+
+ cp = cf_pair_find(cs, "accthost");
+ if (cp) {
+ host = cf_pair_value(cp);
+ if (!host) {
+ cf_log_err_cp(cp, "No value specified for accthost");
+ return 0;
+ }
+
+ /*
+ * Don't look for a secret again if it was found
+ * above.
+ */
+ if ((strcmp(host, "LOCAL") != 0) && !secret) {
+ cp = cf_pair_find(cs, "secret");
+ if (!cp) {
+ cf_log_err_cs(cs, "No shared secret supplied for realm: %s", r->name);
+ return 0;
+ }
+
+ secret = cf_pair_value(cp);
+ if (!secret) {
+ cf_log_err_cp(cp, "No value specified for secret");
+ return 0;
+ }
+ }
+
+ cf_log_info(cs, "\taccthost = %s", host);
+
+ if (!old_server_add(rc, cs, r->name, host, secret, ldflag,
+ &r->acct_pool, HOME_TYPE_ACCT, NULL)) {
+ return 0;
+ }
+ }
+
+ cp = cf_pair_find(cs, "virtual_server");
+ if (cp) {
+ host = cf_pair_value(cp);
+ if (!host) {
+ cf_log_err_cp(cp, "No value specified for virtual_server");
+ return 0;
+ }
+
+ cf_log_info(cs, "\tvirtual_server = %s", host);
+
+ if (!old_server_add(rc, cs, r->name, host, "", ldflag,
+ &r->auth_pool, HOME_TYPE_AUTH, host)) {
+ return 0;
+ }
+ if (!old_server_add(rc, cs, r->name, host, "", ldflag,
+ &r->acct_pool, HOME_TYPE_ACCT, host)) {
+ return 0;
+ }
+ }
+
+ if (secret) {
+ if (rad_debug_lvl <= 2) {
+ cf_log_info(cs, "\tsecret = <<< secret >>>");
+ } else {
+ cf_log_info(cs, "\tsecret = %s", secret);
+ }
+ }
+
+ return 1;
+
+}
+
+
+#ifdef WITH_PROXY
+static int add_pool_to_realm(realm_config_t *rc, CONF_SECTION *cs,
+ char const *name, home_pool_t **dest,
+ home_type_t server_type, bool do_print)
+{
+ home_pool_t mypool, *pool;
+
+ mypool.name = name;
+ mypool.server_type = server_type;
+
+ pool = rbtree_finddata(home_pools_byname, &mypool);
+ if (!pool) {
+ CONF_SECTION *pool_cs;
+
+ pool_cs = cf_section_sub_find_name2(rc->cs,
+ "home_server_pool",
+ name);
+ if (!pool_cs) {
+ pool_cs = cf_section_sub_find_name2(rc->cs,
+ "server_pool",
+ name);
+ }
+ if (!pool_cs) {
+ cf_log_err_cs(cs, "Failed to find home_server_pool \"%s\"", name);
+ return 0;
+ }
+
+ if (!server_pool_add(rc, pool_cs, server_type, do_print)) {
+ return 0;
+ }
+
+ pool = rbtree_finddata(home_pools_byname, &mypool);
+ if (!pool) {
+ ERROR("Internal sanity check failed in add_pool_to_realm");
+ return 0;
+ }
+ }
+
+ if (pool->server_type != server_type) {
+ cf_log_err_cs(cs, "Incompatible home_server_pool \"%s\" (mixed auth_pool / acct_pool)", name);
+ return 0;
+ }
+
+ *dest = pool;
+
+ return 1;
+}
+#endif
+
+
+static int realm_add(realm_config_t *rc, CONF_SECTION *cs)
+{
+ char const *name2;
+ REALM *r = NULL;
+ CONF_PAIR *cp;
+#ifdef WITH_PROXY
+ home_pool_t *auth_pool, *acct_pool;
+ char const *auth_pool_name, *acct_pool_name;
+#ifdef WITH_COA
+ char const *coa_pool_name;
+ home_pool_t *coa_pool;
+#endif
+#endif
+
+ name2 = cf_section_name1(cs);
+ if (!name2 || (strcasecmp(name2, "realm") != 0)) {
+ cf_log_err_cs(cs, "Section is not a realm");
+ return 0;
+ }
+
+ name2 = cf_section_name2(cs);
+ if (!name2) {
+ cf_log_err_cs(cs, "Realm section is missing the realm name");
+ return 0;
+ }
+
+#ifdef WITH_PROXY
+ auth_pool = acct_pool = NULL;
+ auth_pool_name = acct_pool_name = NULL;
+#ifdef WITH_COA
+ coa_pool = NULL;
+ coa_pool_name = NULL;
+#endif
+
+ /*
+ * Prefer new configuration to old one.
+ */
+ cp = cf_pair_find(cs, "pool");
+ if (!cp) cp = cf_pair_find(cs, "home_server_pool");
+ if (cp) auth_pool_name = cf_pair_value(cp);
+ if (cp && auth_pool_name) {
+ acct_pool_name = auth_pool_name;
+ if (!add_pool_to_realm(rc, cs,
+ auth_pool_name, &auth_pool,
+ HOME_TYPE_AUTH, 1)) {
+ return 0;
+ }
+ if (!add_pool_to_realm(rc, cs,
+ auth_pool_name, &acct_pool,
+ HOME_TYPE_ACCT, 0)) {
+ return 0;
+ }
+ }
+
+ cp = cf_pair_find(cs, "auth_pool");
+ if (cp) auth_pool_name = cf_pair_value(cp);
+ if (cp && auth_pool_name) {
+ if (auth_pool) {
+ cf_log_err_cs(cs, "Cannot use \"pool\" and \"auth_pool\" at the same time");
+ return 0;
+ }
+ if (!add_pool_to_realm(rc, cs,
+ auth_pool_name, &auth_pool,
+ HOME_TYPE_AUTH, 1)) {
+ return 0;
+ }
+ }
+
+ cp = cf_pair_find(cs, "acct_pool");
+ if (cp) acct_pool_name = cf_pair_value(cp);
+ if (cp && acct_pool_name) {
+ bool do_print = true;
+
+ if (acct_pool) {
+ cf_log_err_cs(cs, "Cannot use \"pool\" and \"acct_pool\" at the same time");
+ return 0;
+ }
+
+ if (!auth_pool ||
+ (auth_pool_name &&
+ (strcmp(auth_pool_name, acct_pool_name) != 0))) {
+ do_print = true;
+ }
+
+ if (!add_pool_to_realm(rc, cs,
+ acct_pool_name, &acct_pool,
+ HOME_TYPE_ACCT, do_print)) {
+ return 0;
+ }
+ }
+
+#ifdef WITH_COA
+ cp = cf_pair_find(cs, "coa_pool");
+ if (cp) coa_pool_name = cf_pair_value(cp);
+ if (cp && coa_pool_name) {
+ bool do_print = true;
+
+ if (!add_pool_to_realm(rc, cs,
+ coa_pool_name, &coa_pool,
+ HOME_TYPE_COA, do_print)) {
+ return 0;
+ }
+ }
+#endif
+#endif
+
+ cf_log_info(cs, " realm %s {", name2);
+
+#ifdef WITH_PROXY
+ /*
+ * The realm MAY already exist if it's an old-style realm.
+ * In that case, merge the old-style realm with this one.
+ */
+ r = realm_find2(name2);
+ if (r && (strcmp(r->name, name2) == 0)) {
+ if (cf_pair_find(cs, "auth_pool") ||
+ cf_pair_find(cs, "acct_pool")) {
+ cf_log_err_cs(cs, "Duplicate realm \"%s\"", name2);
+ goto error;
+ }
+
+ if (!old_realm_config(rc, cs, r)) {
+ goto error;
+ }
+
+ cf_log_info(cs, " } # realm %s", name2);
+ return 1;
+ }
+#endif
+
+ r = talloc_zero(rc, REALM);
+ r->name = name2;
+ r->strip_realm = true;
+#ifdef WITH_PROXY
+ r->auth_pool = auth_pool;
+ r->acct_pool = acct_pool;
+#ifdef WITH_COA
+ r->coa_pool = coa_pool;
+#endif
+
+ if (auth_pool_name &&
+ (auth_pool_name == acct_pool_name)) { /* yes, ptr comparison */
+ cf_log_info(cs, "\tpool = %s", auth_pool_name);
+ } else {
+ if (auth_pool_name) cf_log_info(cs, "\tauth_pool = %s", auth_pool_name);
+ if (acct_pool_name) cf_log_info(cs, "\tacct_pool = %s", acct_pool_name);
+#ifdef WITH_COA
+ if (coa_pool_name) cf_log_info(cs, "\tcoa_pool = %s", coa_pool_name);
+#endif
+ }
+#endif
+
+ cp = cf_pair_find(cs, "nostrip");
+ if (cp && (cf_pair_value(cp) == NULL)) {
+ r->strip_realm = false;
+ cf_log_info(cs, "\tnostrip");
+ }
+
+ /*
+ * We're a new-style realm. Complain if we see the old
+ * directives.
+ */
+ if (r->auth_pool || r->acct_pool) {
+ if (((cp = cf_pair_find(cs, "authhost")) != NULL) ||
+ ((cp = cf_pair_find(cs, "accthost")) != NULL) ||
+ ((cp = cf_pair_find(cs, "secret")) != NULL) ||
+ ((cp = cf_pair_find(cs, "ldflag")) != NULL)) {
+ WARN("Ignoring old-style configuration entry \"%s\" in realm \"%s\"", cf_pair_attr(cp), r->name);
+ }
+
+
+ /*
+ * The realm MAY be an old-style realm, as there
+ * was no auth_pool or acct_pool. Double-check
+ * it, just to be safe.
+ */
+ } else if (!old_realm_config(rc, cs, r)) {
+ goto error;
+ }
+
+ if (!realm_realm_add(r, cs)) {
+ goto error;
+ }
+
+ cf_log_info(cs, " }");
+
+ return 1;
+
+ error:
+ cf_log_info(cs, " } # realm %s", name2);
+ return 0;
+}
+
+#ifdef HAVE_REGEX
+int realm_realm_add(REALM *r, CONF_SECTION *cs)
+#else
+int realm_realm_add(REALM *r, UNUSED CONF_SECTION *cs)
+#endif
+{
+ /*
+ * The structs aren't mutex protected. Refuse to destroy
+ * the server.
+ */
+ if (event_loop_started && !realm_config->dynamic) {
+ DEBUG("Must set \"dynamic = true\" in proxy.conf");
+ return 0;
+ }
+
+#ifdef HAVE_REGEX
+ /*
+ * It's a regex. Sanity check it, and add it to a
+ * separate list.
+ */
+ if (r->name[0] == '~') {
+ ssize_t slen;
+ realm_regex_t *rr, **last;
+
+ rr = talloc(r, realm_regex_t);
+
+ /*
+ * Include substring matches.
+ */
+ slen = regex_compile(rr, &rr->preg, r->name + 1, strlen(r->name) - 1, true, false, false, false);
+ if (slen <= 0) {
+ char *spaces, *text;
+
+ fr_canonicalize_error(r, &spaces, &text, slen, r->name + 1);
+
+ cf_log_err_cs(cs, "Invalid regular expression:");
+ cf_log_err_cs(cs, "%s", text);
+ cf_log_err_cs(cs, "%s^ %s", spaces, fr_strerror());
+
+ talloc_free(spaces);
+ talloc_free(text);
+ talloc_free(rr);
+
+ return 0;
+ }
+
+ last = &realms_regex;
+ while (*last) last = &((*last)->next); /* O(N^2)... sue me. */
+
+ rr->realm = r;
+ rr->next = NULL;
+
+ *last = rr;
+ return 1;
+ }
+#endif
+
+ if (!rbtree_insert(realms_byname, r)) {
+ rad_assert("Internal sanity check failed" == NULL);
+ return 0;
+ }
+
+ return 1;
+}
+
+#ifdef WITH_COA
+
+static int pool_peek_type(CONF_SECTION *config, CONF_SECTION *cs)
+{
+ int home;
+ char const *name, *type;
+ CONF_PAIR *cp;
+ CONF_SECTION *server_cs;
+
+ cp = cf_pair_find(cs, "home_server");
+ if (!cp) {
+ cf_log_err_cs(cs, "Pool does not contain a \"home_server\" entry");
+ return HOME_TYPE_INVALID;
+ }
+
+ name = cf_pair_value(cp);
+ if (!name) {
+ cf_log_err_cp(cp, "home_server entry does not reference a home server");
+ return HOME_TYPE_INVALID;
+ }
+
+ server_cs = cf_section_sub_find_name2(config, "home_server", name);
+ if (!server_cs) {
+ cf_log_err_cp(cp, "home_server \"%s\" does not exist", name);
+ return HOME_TYPE_INVALID;
+ }
+
+ cp = cf_pair_find(server_cs, "type");
+ if (!cp) {
+ cf_log_err_cs(server_cs, "home_server %s does not contain a \"type\" entry", name);
+ return HOME_TYPE_INVALID;
+ }
+
+ type = cf_pair_value(cp);
+ if (!type) {
+ cf_log_err_cs(server_cs, "home_server %s contains an empty \"type\" entry", name);
+ return HOME_TYPE_INVALID;
+ }
+
+ home = fr_str2int(home_server_types, type, HOME_TYPE_INVALID);
+ if (home == HOME_TYPE_INVALID) {
+ cf_log_err_cs(server_cs, "home_server %s contains an invalid \"type\" entry of value \"%s\"", name, type);
+ return HOME_TYPE_INVALID;
+ }
+
+ return home; /* 'cause we miss it so much */
+}
+#endif
+
+int realms_init(CONF_SECTION *config)
+{
+ CONF_SECTION *cs;
+ int flags = 0;
+#ifdef WITH_PROXY
+ CONF_SECTION *server_cs;
+#endif
+ realm_config_t *rc;
+
+ if (event_loop_started) return 1;
+
+ rc = talloc_zero(NULL, realm_config_t);
+ rc->cs = config;
+
+#ifdef WITH_PROXY
+ cs = cf_subsection_find_next(config, NULL, "proxy");
+ if (cs) {
+ if (cf_section_parse(cs, rc, proxy_config) < 0) {
+ ERROR("Failed parsing proxy section");
+ goto error;
+ }
+ } else {
+ rc->dead_time = DEAD_TIME;
+ rc->retry_count = RETRY_COUNT;
+ rc->retry_delay = RETRY_DELAY;
+ rc->fallback = false;
+ rc->dynamic = false;
+ rc->wake_all_if_all_dead= 0;
+ }
+
+ if (rc->dynamic) {
+ flags = RBTREE_FLAG_LOCK;
+ }
+
+ home_servers_byaddr = rbtree_create(NULL, home_server_addr_cmp, home_server_free, flags);
+ if (!home_servers_byaddr) goto error;
+
+ home_servers_byname = rbtree_create(NULL, home_server_name_cmp, NULL, flags);
+ if (!home_servers_byname) goto error;
+
+#ifdef WITH_STATS
+ home_servers_bynumber = rbtree_create(NULL, home_server_number_cmp, NULL, flags);
+ if (!home_servers_bynumber) goto error;
+#endif
+
+ home_pools_byname = rbtree_create(NULL, home_pool_name_cmp, NULL, flags);
+ if (!home_pools_byname) goto error;
+
+ for (cs = cf_subsection_find_next(config, NULL, "home_server");
+ cs != NULL;
+ cs = cf_subsection_find_next(config, cs, "home_server")) {
+ home_server_t *home;
+
+ home = home_server_afrom_cs(rc, rc, cs);
+ if (!home) goto error;
+ if (!realm_home_server_add(home)) goto error;
+ }
+
+ /*
+ * Loop over virtual servers to find home servers which
+ * are defined in them.
+ */
+ for (server_cs = cf_subsection_find_next(config, NULL, "server");
+ server_cs != NULL;
+ server_cs = cf_subsection_find_next(config, server_cs, "server")) {
+ for (cs = cf_subsection_find_next(server_cs, NULL, "home_server");
+ cs != NULL;
+ cs = cf_subsection_find_next(server_cs, cs, "home_server")) {
+ home_server_t *home;
+
+ home = home_server_afrom_cs(rc, rc, cs);
+ if (!home) goto error;
+ if (!realm_home_server_add(home)) goto error;
+ }
+ }
+#endif
+
+ /*
+ * Now create the realms, which point to the home servers
+ * and home server pools.
+ */
+ realms_byname = rbtree_create(NULL, realm_name_cmp, NULL, flags);
+ if (!realms_byname) goto error;
+
+ for (cs = cf_subsection_find_next(config, NULL, "realm");
+ cs != NULL;
+ cs = cf_subsection_find_next(config, cs, "realm")) {
+ if (!realm_add(rc, cs)) {
+ error:
+ realms_free();
+ /*
+ * Must be called after realms_free as home_servers
+ * parented by rc are in trees freed by realms_free()
+ */
+ talloc_free(rc);
+ return 0;
+ }
+ }
+
+#ifdef WITH_COA
+ /*
+ * CoA pools aren't necessarily tied to realms.
+ */
+ for (cs = cf_subsection_find_next(config, NULL, "home_server_pool");
+ cs != NULL;
+ cs = cf_subsection_find_next(config, cs, "home_server_pool")) {
+ int type;
+
+ /*
+ * Pool was already loaded.
+ */
+ if (cf_data_find(cs, "home_server_pool")) continue;
+
+ type = pool_peek_type(config, cs);
+ if (type == HOME_TYPE_INVALID) goto error;
+ if (!server_pool_add(rc, cs, type, true)) goto error;
+ }
+#endif
+
+#ifdef WITH_PROXY
+ xlat_register("home_server", xlat_home_server, NULL, NULL);
+ xlat_register("home_server_pool", xlat_server_pool, NULL, NULL);
+ xlat_register("home_server_dynamic", xlat_home_server_dynamic, NULL, NULL);
+#endif
+
+ realm_config = rc;
+
+#ifdef HAVE_DIRENT_H
+ if (!rc->dynamic) {
+ if (rc->directory) {
+ WARN("Ignoring 'directory' as dynamic home servers were not configured.");
+ }
+ } else {
+ DIR *dir;
+ struct dirent *dp;
+
+ if (!rc->directory) {
+ WARN("Ignoring \"dynamic = true\" due to not set \"directory\" in proxy.conf");
+ return 1;
+ }
+
+ DEBUG2("including files in directory %s", rc->directory);
+
+ dir = opendir(rc->directory);
+ if (!dir) {
+ cf_log_err_cs(config, "Error reading directory %s: %s",
+ rc->directory, fr_syserror(errno));
+ goto error;
+ }
+
+ /*
+ * Read the directory, ignoring "." files.
+ */
+ while ((dp = readdir(dir)) != NULL) {
+ char const *p;
+ char conf_file[PATH_MAX];
+
+ if (dp->d_name[0] == '.') continue;
+
+ /*
+ * Skip the TLS configuration.
+ */
+ if (strcmp(dp->d_name, "tls.conf") == 0) continue;
+
+ /*
+ * Check for valid characters
+ */
+ for (p = dp->d_name; *p != '\0'; p++) {
+ if (isalpha((int)*p) ||
+ isdigit((int)*p) ||
+ (*p == '-') ||
+ (*p == '_') ||
+ (*p == '.')) continue;
+ break;
+ }
+ if (*p != '\0') continue;
+
+ snprintf(conf_file, sizeof(conf_file), "%s/%s", rc->directory, dp->d_name);
+ if (home_server_afrom_file(conf_file) < 0) {
+ ERROR("Failed reading home_server from %s - %s",
+ conf_file, fr_strerror());
+ closedir(dir);
+ goto error;
+ }
+ }
+ closedir(dir);
+ }
+#endif
+
+ return 1;
+}
+
+/*
+ * Find a realm where "name" might be the regex.
+ */
+REALM *realm_find2(char const *name)
+{
+ REALM myrealm;
+ REALM *realm;
+
+ if (!name) name = "NULL";
+
+ myrealm.name = name;
+ realm = rbtree_finddata(realms_byname, &myrealm);
+ if (realm) return realm;
+
+#ifdef HAVE_REGEX
+ if (realms_regex) {
+ realm_regex_t *this;
+
+ for (this = realms_regex; this != NULL; this = this->next) {
+ if (strcmp(this->realm->name, name) == 0) {
+ return this->realm;
+ }
+ }
+ }
+#endif
+
+ /*
+ * Couldn't find a realm. Look for DEFAULT.
+ */
+ myrealm.name = "DEFAULT";
+ return rbtree_finddata(realms_byname, &myrealm);
+}
+
+
+/*
+ * Find a realm in the REALM list.
+ */
+REALM *realm_find(char const *name)
+{
+ REALM myrealm;
+ REALM *realm;
+
+ if (!name) name = "NULL";
+
+ myrealm.name = name;
+ realm = rbtree_finddata(realms_byname, &myrealm);
+ if (realm) return realm;
+
+#ifdef HAVE_REGEX
+ if (realms_regex) {
+ realm_regex_t *this;
+
+ for (this = realms_regex;
+ this != NULL;
+ this = this->next) {
+ int compare;
+
+ compare = regex_exec(this->preg, name, strlen(name), NULL, NULL);
+ if (compare < 0) {
+ ERROR("Failed performing realm comparison: %s", fr_strerror());
+ return NULL;
+ }
+ if (compare == 1) return this->realm;
+ }
+ }
+#endif
+
+ /*
+ * Couldn't find a realm. Look for DEFAULT.
+ */
+ myrealm.name = "DEFAULT";
+ return rbtree_finddata(realms_byname, &myrealm);
+}
+
+
+#ifdef WITH_PROXY
+
+/*
+ * Allocate the proxy list if it doesn't already exist, and copy request
+ * VPs into it. Setup src/dst IP addresses based on home server, and
+ * calculate and add the message-authenticator.
+ *
+ * This is a distinct function from home_server_ldb, as not all home_server_t
+ * lookups result in the *CURRENT* request being proxied,
+ * as in rlm_replicate, and this may trigger asserts elsewhere in the
+ * server.
+ */
+void home_server_update_request(home_server_t *home, REQUEST *request)
+{
+
+ /*
+ * Allocate the proxy packet, only if it wasn't
+ * already allocated by a module. This check is
+ * mainly to support the proxying of EAP-TTLS and
+ * EAP-PEAP tunneled requests.
+ *
+ * In those cases, the EAP module creates a
+ * "fake" request, and recursively passes it
+ * through the authentication stage of the
+ * server. The module then checks if the request
+ * was supposed to be proxied, and if so, creates
+ * a proxy packet from the TUNNELED request, and
+ * not from the EAP request outside of the
+ * tunnel.
+ *
+ * The proxy then works like normal, except that
+ * the response packet is "eaten" by the EAP
+ * module, and encapsulated into an EAP packet.
+ */
+ if (!request->proxy) {
+ request->proxy = rad_alloc(request, true);
+ if (!request->proxy) {
+ ERROR("no memory");
+ fr_exit(1);
+ }
+
+ /*
+ * Copy the request, then look up name
+ * and plain-text password in the copy.
+ *
+ * Note that the User-Name attribute is
+ * the *original* as sent over by the
+ * client. The Stripped-User-Name
+ * attribute is the one hacked through
+ * the 'hints' file.
+ */
+ request->proxy->vps = fr_pair_list_copy(request->proxy,
+ request->packet->vps);
+ }
+
+ /*
+ * Update the various fields as appropriate.
+ */
+ request->proxy->src_ipaddr = home->src_ipaddr;
+ request->proxy->src_port = 0;
+ request->proxy->dst_ipaddr = home->ipaddr;
+ request->proxy->dst_port = home->port;
+#ifdef WITH_TCP
+ request->proxy->proto = home->proto;
+#endif
+ request->home_server = home;
+
+ /*
+ * Access-Requests have a Message-Authenticator added,
+ * unless one already exists.
+ */
+ if ((request->packet->code == PW_CODE_ACCESS_REQUEST) &&
+ !fr_pair_find_by_num(request->proxy->vps, PW_MESSAGE_AUTHENTICATOR, 0, TAG_ANY)) {
+ fr_pair_make(request->proxy, &request->proxy->vps,
+ "Message-Authenticator", "0x00",
+ T_OP_SET);
+ }
+}
+
+home_server_t *home_server_ldb(char const *realmname,
+ home_pool_t *pool, REQUEST *request)
+{
+ int start;
+ int count;
+ home_server_t *found = NULL;
+ home_server_t *zombie = NULL;
+ VALUE_PAIR *vp;
+ uint32_t hash;
+
+ /*
+ * Determine how to pick choose the home server.
+ */
+ switch (pool->type) {
+
+
+ /*
+ * For load-balancing by client IP address, we
+ * pick a home server by hashing the client IP.
+ *
+ * This isn't as even a load distribution as
+ * tracking the State attribute, but it's better
+ * than nothing.
+ */
+ case HOME_POOL_CLIENT_BALANCE:
+ switch (request->packet->src_ipaddr.af) {
+ case AF_INET:
+ hash = fr_hash(&request->packet->src_ipaddr.ipaddr.ip4addr,
+ sizeof(request->packet->src_ipaddr.ipaddr.ip4addr));
+ break;
+
+ case AF_INET6:
+ hash = fr_hash(&request->packet->src_ipaddr.ipaddr.ip6addr,
+ sizeof(request->packet->src_ipaddr.ipaddr.ip6addr));
+ break;
+
+ default:
+ hash = 0;
+ break;
+ }
+ start = hash % pool->num_home_servers;
+ break;
+
+ case HOME_POOL_CLIENT_PORT_BALANCE:
+ switch (request->packet->src_ipaddr.af) {
+ case AF_INET:
+ hash = fr_hash(&request->packet->src_ipaddr.ipaddr.ip4addr,
+ sizeof(request->packet->src_ipaddr.ipaddr.ip4addr));
+ break;
+
+ case AF_INET6:
+ hash = fr_hash(&request->packet->src_ipaddr.ipaddr.ip6addr,
+ sizeof(request->packet->src_ipaddr.ipaddr.ip6addr));
+ break;
+
+ default:
+ hash = 0;
+ break;
+ }
+ hash = fr_hash_update(&request->packet->src_port,
+ sizeof(request->packet->src_port), hash);
+ start = hash % pool->num_home_servers;
+ break;
+
+ case HOME_POOL_KEYED_BALANCE:
+ if ((vp = fr_pair_find_by_num(request->config, PW_LOAD_BALANCE_KEY, 0, TAG_ANY)) != NULL) {
+ hash = fr_hash(vp->vp_strvalue, vp->vp_length);
+ start = hash % pool->num_home_servers;
+ break;
+ }
+ /* FALL-THROUGH */
+
+ case HOME_POOL_LOAD_BALANCE:
+ case HOME_POOL_FAIL_OVER:
+ start = 0;
+ break;
+
+ default: /* this shouldn't happen... */
+ start = 0;
+ break;
+
+ }
+
+ /*
+ * Starting with the home server we chose, loop through
+ * all home servers. If the current one is dead, skip
+ * it. If it is too busy, skip it.
+ *
+ * Otherwise, use it.
+ */
+ for (count = 0; count < pool->num_home_servers; count++) {
+ home_server_t *home = pool->servers[(start + count) % pool->num_home_servers];
+
+ if (!home) continue;
+
+ /*
+ * Skip dead home servers.
+ *
+ * Home servers that are unknown, alive, or zombie
+ * are used for proxying.
+ */
+ if (home->state >= HOME_STATE_IS_DEAD) {
+ continue;
+ }
+
+ /*
+ * This home server is too busy. Choose another one.
+ */
+ if (home->currently_outstanding >= home->max_outstanding) {
+ continue;
+ }
+
+#ifdef WITH_DETAIL
+ /*
+ * We read the packet from a detail file, AND it
+ * came from this server. Don't re-proxy it
+ * there.
+ */
+ if (request->listener &&
+ (request->listener->type == RAD_LISTEN_DETAIL) &&
+ (request->packet->code == PW_CODE_ACCOUNTING_REQUEST) &&
+ (fr_ipaddr_cmp(&home->ipaddr, &request->packet->src_ipaddr) == 0)) {
+ continue;
+ }
+#endif
+
+ /*
+ * Default virtual: ignore homes tied to a
+ * virtual.
+ */
+ if (!request->server && home->parent_server) {
+ continue;
+ }
+
+ /*
+ * A virtual AND home is tied to virtual,
+ * ignore ones which don't match.
+ */
+ if (request->server && home->parent_server &&
+ strcmp(request->server, home->parent_server) != 0) {
+ continue;
+ }
+
+ /*
+ * Allow request->server && !home->parent_server
+ *
+ * i.e. virtuals can proxy to globally defined
+ * homes.
+ */
+
+ /*
+ * It's zombie, so we remember the first zombie
+ * we find, but we don't mark it as a "live"
+ * server.
+ */
+ if (home->state == HOME_STATE_ZOMBIE) {
+ if (!zombie) zombie = home;
+ continue;
+ }
+
+ /*
+ * We've found the first "live" one. Use that.
+ */
+ if (pool->type != HOME_POOL_LOAD_BALANCE) {
+ found = home;
+ break;
+ }
+
+ /*
+ * Otherwise we're doing some kind of load balancing.
+ * If we haven't found one yet, pick this one.
+ */
+ if (!found) {
+ found = home;
+ continue;
+ }
+
+ RDEBUG3("PROXY %s %d\t%s %d",
+ found->log_name, found->currently_outstanding,
+ home->log_name, home->currently_outstanding);
+
+ /*
+ * Prefer this server if it's less busy than the
+ * one we had previously found.
+ */
+ if (home->currently_outstanding < found->currently_outstanding) {
+ RDEBUG3("PROXY Choosing %s: It's less busy than %s",
+ home->log_name, found->log_name);
+ found = home;
+ continue;
+ }
+
+ /*
+ * Ignore servers which are busier than the one
+ * we found.
+ */
+ if (home->currently_outstanding > found->currently_outstanding) {
+ RDEBUG3("PROXY Skipping %s: It's busier than %s",
+ home->log_name, found->log_name);
+ continue;
+ }
+
+ /*
+ * From the list of servers which have the same
+ * load, choose one at random.
+ */
+ if (((count + 1) * (fr_rand() & 0xffff)) < (uint32_t) 0x10000) {
+ found = home;
+ }
+ } /* loop over the home servers */
+
+ /*
+ * We have no live servers, BUT we have a zombie. Use
+ * the zombie as a last resort.
+ */
+ if (!found && zombie) {
+ found = zombie;
+ zombie = NULL;
+ }
+
+ /*
+ * There's a fallback if they're all dead.
+ */
+ if (!found && pool->fallback) {
+ found = pool->fallback;
+
+ WARN("Home server pool %s failing over to fallback %s",
+ pool->name, found->virtual_server);
+ if (pool->in_fallback) goto update_and_return;
+
+ pool->in_fallback = true;
+
+ /*
+ * Run the trigger once an hour saying that
+ * they're all dead.
+ */
+ if ((pool->time_all_dead + 3600) < request->timestamp) {
+ pool->time_all_dead = request->timestamp;
+ exec_trigger(request, pool->cs, "home_server_pool.fallback", false);
+ }
+ }
+
+ if (found) {
+ update_and_return:
+ if ((found != pool->fallback) && pool->in_fallback) {
+ pool->in_fallback = false;
+ exec_trigger(request, pool->cs, "home_server_pool.normal", false);
+ }
+
+ return found;
+ }
+
+ /*
+ * No live match found, and no fallback to the "DEFAULT"
+ * realm. We fix this by blindly marking all servers as
+ * "live". But only do it for ones that don't support
+ * "pings", as they will be marked live when they
+ * actually are live.
+ */
+ if (!realm_config->fallback &&
+ realm_config->wake_all_if_all_dead) {
+ for (count = 0; count < pool->num_home_servers; count++) {
+ home_server_t *home = pool->servers[count];
+
+ if (!home) continue;
+
+ if ((home->state >= HOME_STATE_IS_DEAD) &&
+ (home->ping_check == HOME_PING_CHECK_NONE)) {
+ home->state = HOME_STATE_ALIVE;
+ home->response_timeouts = 0;
+ if (!found) found = home;
+ }
+ }
+
+ if (found) goto update_and_return;
+ }
+
+ /*
+ * Still nothing. Look up the DEFAULT realm, but only
+ * if we weren't looking up the NULL or DEFAULT realms.
+ */
+ if (realm_config->fallback &&
+ realmname &&
+ (strcmp(realmname, "NULL") != 0) &&
+ (strcmp(realmname, "DEFAULT") != 0)) {
+ REALM *rd = realm_find("DEFAULT");
+
+ if (!rd) return NULL;
+
+ pool = NULL;
+ if (request->packet->code == PW_CODE_ACCESS_REQUEST) {
+ pool = rd->auth_pool;
+
+ } else if (request->packet->code == PW_CODE_ACCOUNTING_REQUEST) {
+ pool = rd->acct_pool;
+ }
+ if (!pool) return NULL;
+
+ RDEBUG2("PROXY - realm %s has no live home servers. Falling back to the DEFAULT realm.", realmname);
+ return home_server_ldb(rd->name, pool, request);
+ }
+
+ /*
+ * Still haven't found anything. Oh well.
+ */
+ return NULL;
+}
+
+
+home_server_t *home_server_find(fr_ipaddr_t *ipaddr, uint16_t port,
+#ifndef WITH_TCP
+ UNUSED
+#endif
+ int proto)
+{
+ home_server_t myhome;
+
+ memset(&myhome, 0, sizeof(myhome));
+ myhome.ipaddr = *ipaddr;
+ myhome.src_ipaddr.af = ipaddr->af;
+ myhome.port = port;
+#ifdef WITH_TCP
+ myhome.proto = proto;
+#else
+ myhome.proto = IPPROTO_UDP;
+#endif
+ myhome.virtual_server = NULL; /* we're not called for internal proxying */
+
+ return rbtree_finddata(home_servers_byaddr, &myhome);
+}
+
+home_server_t *home_server_find_bysrc(fr_ipaddr_t *ipaddr, uint16_t port,
+ int proto,
+ fr_ipaddr_t *src_ipaddr)
+{
+ home_server_t myhome;
+
+ if (!src_ipaddr) return home_server_find(ipaddr, port, proto);
+
+ if (src_ipaddr->af != ipaddr->af) return NULL;
+
+ memset(&myhome, 0, sizeof(myhome));
+ myhome.ipaddr = *ipaddr;
+ myhome.src_ipaddr = *src_ipaddr;
+ myhome.port = port;
+#ifdef WITH_TCP
+ myhome.proto = proto;
+#else
+ myhome.proto = IPPROTO_UDP;
+#endif
+ myhome.virtual_server = NULL; /* we're not called for internal proxying */
+
+ return rbtree_finddata(home_servers_byaddr, &myhome);
+}
+
+#ifdef WITH_COA
+home_server_t *home_server_byname(char const *name, int type)
+{
+ home_server_t myhome;
+
+ memset(&myhome, 0, sizeof(myhome));
+ myhome.type = type;
+ myhome.name = name;
+
+ return rbtree_finddata(home_servers_byname, &myhome);
+}
+#endif
+
+#ifdef WITH_STATS
+home_server_t *home_server_bynumber(int number)
+{
+ home_server_t myhome;
+
+ memset(&myhome, 0, sizeof(myhome));
+ myhome.number = number;
+ myhome.virtual_server = NULL; /* we're not called for internal proxying */
+
+ return rbtree_finddata(home_servers_bynumber, &myhome);
+}
+#endif
+
+home_pool_t *home_pool_byname(char const *name, int type)
+{
+ home_pool_t mypool;
+
+ memset(&mypool, 0, sizeof(mypool));
+ mypool.name = name;
+ mypool.server_type = type;
+ return rbtree_finddata(home_pools_byname, &mypool);
+}
+
+int home_server_afrom_file(char const *filename)
+{
+ CONF_SECTION *cs, *subcs;
+ char const *p;
+ home_server_t *home;
+
+ if (!realm_config->dynamic) {
+ fr_strerror_printf("Must set \"dynamic = true\" in proxy.conf for dynamic home servers to work");
+ return -1;
+ }
+
+ cs = cf_section_alloc(NULL, "home", filename);
+ if (!cs) {
+ fr_strerror_printf("Failed allocating memory");
+ return -1;
+ }
+
+ if (cf_file_read(cs, filename) < 0) {
+ fr_strerror_printf("Failed reading file %s", filename);
+ error:
+ talloc_free(cs);
+ return -1;
+ }
+
+ p = strrchr(filename, '/');
+ if (p) {
+ p++;
+ } else {
+ p = filename;
+ }
+
+ subcs = cf_section_sub_find_name2(cs, "home_server", p);
+ if (!subcs) {
+ fr_strerror_printf("No 'home_server %s' definition in the file.", p);
+ goto error;
+ }
+
+ home = home_server_afrom_cs(realm_config, realm_config, subcs);
+ if (!home) {
+ fr_strerror_printf("Failed parsing configuration to a home_server structure");
+ goto error;
+ }
+
+ home->dynamic = true;
+
+ if (home->virtual_server) {
+ fr_strerror_printf("Dynamic home_server '%s' cannot have 'server = %s' configuration item", p, home->virtual_server);
+ talloc_free(home);
+ goto error;
+ }
+
+ if (home->dual) {
+ fr_strerror_printf("Dynamic home_server '%s' is missing 'type', or it is set to 'auth+acct'. Please specify 'type = auth' or 'type = acct', etc.", p);
+ talloc_free(home);
+ goto error;
+ }
+
+#ifdef COA_TUNNEL
+ if (home->recv_coa) {
+ fr_strerror_printf("Dynamic home_server '%s' cannot receive CoA requests'", p);
+ talloc_free(home);
+ goto error;
+ }
+#endif
+
+ if (!realm_home_server_add(home)) {
+ fr_strerror_printf("Failed adding home_server to the internal data structures");
+ talloc_free(home);
+ goto error;
+ }
+
+ return 0;
+}
+
+int home_server_delete(char const *name, char const *type_name)
+{
+ home_server_t *home;
+ int type;
+ char const *p;
+
+ if (!realm_config->dynamic) {
+ fr_strerror_printf("Must set 'dynamic' in proxy.conf for dynamic home servers to work");
+ return -1;
+ }
+
+ type = fr_str2int(home_server_types, type_name, HOME_TYPE_INVALID);
+ if (type == HOME_TYPE_INVALID) {
+ fr_strerror_printf("Unknown home_server type '%s'", type_name);
+ return -1;
+ }
+
+ p = strrchr(name, '/');
+ if (p) {
+ p++;
+ } else {
+ p = name;
+ }
+
+ home = home_server_byname(p, type);
+ if (!home) {
+ fr_strerror_printf("Failed to find home_server %s", p);
+ return -1;
+ }
+
+ if (!home->dynamic) {
+ fr_strerror_printf("Cannot delete static home_server %s", p);
+ return -1;
+ }
+
+ (void) rbtree_deletebydata(home_servers_byname, home);
+ (void) rbtree_deletebydata(home_servers_byaddr, home);
+#ifdef WITH_STATS
+ (void) rbtree_deletebydata(home_servers_bynumber, home);
+#endif
+
+ /*
+ * Leak home, and home->cs. Oh well.
+ */
+ return 0;
+}
+#endif