2 * modules.c Radius module support.
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 2003,2006 The FreeRADIUS server project
21 * Copyright 2000 Alan DeKok <aland@ox.org>
22 * Copyright 2000 Alan Curry <pacman@world.std.com>
25 #include <freeradius-devel/ident.h>
28 #include <freeradius-devel/radiusd.h>
29 #include <freeradius-devel/modpriv.h>
30 #include <freeradius-devel/modcall.h>
31 #include <freeradius-devel/rad_assert.h>
33 extern int check_config;
35 typedef struct indexed_modcallable {
38 modcallable *modulelist;
39 } indexed_modcallable;
41 typedef struct virtual_server_t {
47 modcallable *mc[RLM_COMPONENT_COUNT];
48 CONF_SECTION *subcs[RLM_COMPONENT_COUNT];
49 struct virtual_server_t *next;
53 * Keep a hash of virtual servers, so that we can reload them.
55 #define VIRTUAL_SERVER_HASH_SIZE (256)
56 static virtual_server_t *virtual_servers[VIRTUAL_SERVER_HASH_SIZE];
58 static rbtree_t *module_tree = NULL;
60 static rbtree_t *instance_tree = NULL;
62 struct fr_module_hup_t {
63 module_instance_t *mi;
66 fr_module_hup_t *next;
70 typedef struct section_type_value_t {
74 } section_type_value_t;
77 * Ordered by component
79 static const section_type_value_t section_type_value[RLM_COMPONENT_COUNT] = {
80 { "authenticate", "Auth-Type", PW_AUTH_TYPE },
81 { "authorize", "Autz-Type", PW_AUTZ_TYPE },
82 { "preacct", "Pre-Acct-Type", PW_PRE_ACCT_TYPE },
83 { "accounting", "Acct-Type", PW_ACCT_TYPE },
84 { "session", "Session-Type", PW_SESSION_TYPE },
85 { "pre-proxy", "Pre-Proxy-Type", PW_PRE_PROXY_TYPE },
86 { "post-proxy", "Post-Proxy-Type", PW_POST_PROXY_TYPE },
87 { "post-auth", "Post-Auth-Type", PW_POST_AUTH_TYPE }
90 { "recv-coa", "Recv-CoA-Type", PW_RECV_COA_TYPE },
91 { "send-coa", "Send-CoA-Type", PW_SEND_COA_TYPE }
96 #ifdef WITHOUT_LIBLTDL
104 #define RTLD_LOCAL (0)
107 #define fr_dlopenext lt_dlopenext
110 #define LT_SHREXT ".so"
111 #elif defined (WIN32)
112 #define LT_SHREXT ".dll"
114 #define LT_SHREXT ".dylib"
118 lt_dlhandle lt_dlopenext(const char *name)
122 strlcpy(buffer, name, sizeof(buffer));
125 * FIXME: Make this configurable...
127 strlcat(buffer, LT_SHREXT, sizeof(buffer));
129 return dlopen(buffer, RTLD_NOW | RTLD_LOCAL);
132 void *lt_dlsym(lt_dlhandle handle, UNUSED const char *symbol)
134 return dlsym(handle, symbol);
137 int lt_dlclose(lt_dlhandle handle)
139 if (!handle) return 0;
141 return dlclose(handle);
144 const char *lt_dlerror(void)
150 #else /* without dlopen */
151 typedef struct lt_dlmodule_t {
156 typedef struct eap_type_t EAP_TYPE;
157 typedef struct rlm_sql_module_t rlm_sql_module_t;
160 * FIXME: Write hackery to auto-generate this data.
161 * We only need to do this on systems that don't have dlopen.
163 extern module_t rlm_pap;
164 extern module_t rlm_chap;
165 extern module_t rlm_eap;
166 extern module_t rlm_sql;
169 extern EAP_TYPE rlm_eap_md5;
170 extern rlm_sql_module_t rlm_sql_mysql;
173 static const lt_dlmodule_t lt_dlmodules[] = {
174 { "rlm_pap", &rlm_pap },
175 { "rlm_chap", &rlm_chap },
176 { "rlm_eap", &rlm_eap },
179 { "rlm_eap_md5", &rlm_eap_md5 },
182 { "rlm_sql_mysql", &rlm_sql_mysql },
188 #define fr_dlopenext lt_dlopenext
189 lt_dlhandle lt_dlopenext(const char *name)
193 for (i = 0; lt_dlmodules[i].name != NULL; i++) {
194 if (strcmp(name, lt_dlmodules[i].name) == 0) {
195 return lt_dlmodules[i].ref;
202 void *lt_dlsym(lt_dlhandle handle, UNUSED const char *symbol)
207 int lt_dlclose(lt_dlhandle handle)
212 const char *lt_dlerror(void)
214 return "Unspecified error";
217 #endif /* WITH_DLOPEN */
218 #else /* WITHOUT_LIBLTDL */
221 * Solve the issues of libraries linking to other libraries
222 * by using a newer libltdl API.
224 #ifndef HAVE_LT_DLADVISE_INIT
225 #define fr_dlopenext lt_dlopenext
227 static lt_dlhandle fr_dlopenext(const char *filename)
229 lt_dlhandle handle = 0;
232 if (!lt_dladvise_init (&advise) &&
233 !lt_dladvise_ext (&advise) &&
234 !lt_dladvise_global (&advise)) {
235 handle = lt_dlopenadvise (filename, advise);
238 lt_dladvise_destroy (&advise);
242 #endif /* HAVE_LT_DLADVISE_INIT */
243 #endif /* WITHOUT_LIBLTDL */
245 static int virtual_server_idx(const char *name)
251 hash = fr_hash_string(name);
253 return hash & (VIRTUAL_SERVER_HASH_SIZE - 1);
256 static void virtual_server_free(virtual_server_t *server)
260 if (server->components) rbtree_free(server->components);
261 server->components = NULL;
266 void virtual_servers_free(time_t when)
269 virtual_server_t **last;
271 for (i = 0; i < VIRTUAL_SERVER_HASH_SIZE; i++) {
272 virtual_server_t *server, *next;
274 last = &virtual_servers[i];
275 for (server = virtual_servers[i];
281 * If we delete it, fix the links so that
282 * we don't orphan anything. Also,
283 * delete it if it's old, AND a newer one
286 * Otherwise, the last pointer gets set to
287 * the one we didn't delete.
290 ((server->created < when) && server->can_free)) {
291 *last = server->next;
292 virtual_server_free(server);
294 last = &(server->next);
300 static void indexed_modcallable_free(void *data)
302 indexed_modcallable *c = data;
304 modcallable_free(&c->modulelist);
308 static int indexed_modcallable_cmp(const void *one, const void *two)
310 const indexed_modcallable *a = one;
311 const indexed_modcallable *b = two;
313 if (a->comp < b->comp) return -1;
314 if (a->comp > b->comp) return +1;
316 return a->idx - b->idx;
321 * Compare two module entries
323 static int module_instance_cmp(const void *one, const void *two)
325 const module_instance_t *a = one;
326 const module_instance_t *b = two;
328 return strcmp(a->name, b->name);
332 static void module_instance_free_old(CONF_SECTION *cs, module_instance_t *node,
335 fr_module_hup_t *mh, **last;
338 * Walk the list, freeing up old instances.
345 * Free only every 60 seconds.
347 if ((when - mh->when) < 60) {
352 cf_section_parse_free(cs, mh->insthandle);
354 if (node->entry->module->detach) {
355 (node->entry->module->detach)(mh->insthandle);
357 free(mh->insthandle);
367 * Free a module instance.
369 static void module_instance_free(void *data)
371 module_instance_t *this = data;
373 module_instance_free_old(this->cs, this, time(NULL) + 100);
375 if (this->entry->module->detach) {
376 (this->entry->module->detach)(this->insthandle);
379 #ifdef HAVE_PTHREAD_H
383 * The mutex MIGHT be locked...
384 * we'll check for that later, I guess.
386 pthread_mutex_destroy(this->mutex);
390 memset(this, 0, sizeof(*this));
396 * Compare two module entries
398 static int module_entry_cmp(const void *one, const void *two)
400 const module_entry_t *a = one;
401 const module_entry_t *b = two;
403 return strcmp(a->name, b->name);
407 * Free a module entry.
409 static void module_entry_free(void *data)
411 module_entry_t *this = data;
413 lt_dlclose(this->handle); /* ignore any errors */
414 memset(this, 0, sizeof(*this));
420 * Remove the module lists.
422 int detach_modules(void)
424 rbtree_free(instance_tree);
425 rbtree_free(module_tree);
434 * Find a module on disk or in memory, and link to it.
436 static module_entry_t *linkto_module(const char *module_name,
439 module_entry_t myentry;
440 module_entry_t *node;
441 lt_dlhandle handle = NULL;
442 char module_struct[256];
444 const module_t *module;
446 strlcpy(myentry.name, module_name, sizeof(myentry.name));
447 node = rbtree_finddata(module_tree, &myentry);
448 if (node) return node;
451 * Link to the module's rlm_FOO{} module structure.
453 * The module_name variable has the version number
454 * embedded in it, and we don't want that here.
456 strcpy(module_struct, module_name);
457 p = strrchr(module_struct, '-');
460 #if defined(WITHOUT_LIBLTDL) && defined (WITH_DLOPEN) && defined(RTLD_SELF)
461 module = lt_dlsym(RTLD_SELF, module_struct);
462 if (module) goto open_self;
466 * Keep the handle around so we can dlclose() it.
468 handle = fr_dlopenext(module_name);
469 if (handle == NULL) {
470 cf_log_err(cf_sectiontoitem(cs),
471 "Failed to link to module '%s': %s\n",
472 module_name, lt_dlerror());
476 DEBUG3(" (Loaded %s, checking if it's valid)", module_name);
479 * libltld MAY core here, if the handle it gives us contains
482 module = lt_dlsym(handle, module_struct);
484 cf_log_err(cf_sectiontoitem(cs),
485 "Failed linking to %s structure: %s\n",
486 module_name, lt_dlerror());
491 #if defined(WITHOUT_LIBLTDL) && defined (WITH_DLOPEN) && defined(RTLD_SELF)
495 * Before doing anything else, check if it's sane.
497 if (module->magic != RLM_MODULE_MAGIC_NUMBER) {
499 cf_log_err(cf_sectiontoitem(cs),
500 "Invalid version in module '%s'",
506 /* make room for the module type */
507 node = rad_malloc(sizeof(*node));
508 memset(node, 0, sizeof(*node));
509 strlcpy(node->name, module_name, sizeof(node->name));
510 node->module = module;
511 node->handle = handle;
513 cf_log_module(cs, "Linked to module %s", module_name);
516 * Add the module as "rlm_foo-version" to the configuration
519 if (!rbtree_insert(module_tree, node)) {
520 radlog(L_ERR, "Failed to cache module %s", module_name);
530 * Find a module instance.
532 module_instance_t *find_module_instance(CONF_SECTION *modules,
533 const char *instname, int do_link)
535 int check_config_safe = FALSE;
538 module_instance_t *node, myNode;
539 char module_name[256];
541 if (!modules) return NULL;
544 * Module instances are declared in the modules{} block
545 * and referenced later by their name, which is the
546 * name2 from the config section, or name1 if there was
549 cs = cf_section_sub_find_name2(modules, NULL, instname);
551 radlog(L_ERR, "ERROR: Cannot find a configuration entry for module \"%s\".\n", instname);
556 * If there's already a module instance, return it.
558 strlcpy(myNode.name, instname, sizeof(myNode.name));
559 node = rbtree_finddata(instance_tree, &myNode);
560 if (node) return node;
562 if (!do_link) return NULL;
564 name1 = cf_section_name1(cs);
567 * Found the configuration entry.
569 node = rad_malloc(sizeof(*node));
570 memset(node, 0, sizeof(*node));
572 node->insthandle = NULL;
576 * Names in the "modules" section aren't prefixed
577 * with "rlm_", so we add it here.
579 snprintf(module_name, sizeof(module_name), "rlm_%s", name1);
581 node->entry = linkto_module(module_name, cs);
584 /* linkto_module logs any errors */
588 if (check_config && (node->entry->module->instantiate) &&
589 (node->entry->module->type & RLM_TYPE_CHECK_CONFIG_SAFE) == 0) {
590 const char *value = NULL;
593 cp = cf_pair_find(cs, "force_check_config");
594 if (cp) value = cf_pair_value(cp);
596 if (value && (strcmp(value, "yes") == 0)) goto print_inst;
598 cf_log_module(cs, "Skipping instantiation of %s", instname);
601 check_config_safe = TRUE;
602 cf_log_module(cs, "Instantiating module \"%s\" from file %s",
603 instname, cf_section_filename(cs));
607 * Call the module's instantiation routine.
609 if ((node->entry->module->instantiate) &&
610 (!check_config || check_config_safe) &&
611 ((node->entry->module->instantiate)(cs, &node->insthandle) < 0)) {
612 cf_log_err(cf_sectiontoitem(cs),
613 "Instantiation failed for module \"%s\"",
620 * We're done. Fill in the rest of the data structure,
621 * and link it to the module instance list.
623 strlcpy(node->name, instname, sizeof(node->name));
625 #ifdef HAVE_PTHREAD_H
627 * If we're threaded, check if the module is thread-safe.
629 * If it isn't, we create a mutex.
631 if ((node->entry->module->type & RLM_TYPE_THREAD_UNSAFE) != 0) {
632 node->mutex = (pthread_mutex_t *) rad_malloc(sizeof(pthread_mutex_t));
634 * Initialize the mutex.
636 pthread_mutex_init(node->mutex, NULL);
639 * The module is thread-safe. Don't give it a mutex.
645 rbtree_insert(instance_tree, node);
650 static indexed_modcallable *lookup_by_index(rbtree_t *components,
653 indexed_modcallable myc;
658 return rbtree_finddata(components, &myc);
662 * Create a new sublist.
664 static indexed_modcallable *new_sublist(rbtree_t *components, int comp, int idx)
666 indexed_modcallable *c;
668 c = lookup_by_index(components, comp, idx);
670 /* It is an error to try to create a sublist that already
671 * exists. It would almost certainly be caused by accidental
672 * duplication in the config file.
674 * index 0 is the exception, because it is used when we want
675 * to collect _all_ listed modules under a single index by
676 * default, which is currently the case in all components
677 * except authenticate. */
685 c = rad_malloc(sizeof(*c));
686 c->modulelist = NULL;
690 if (!rbtree_insert(components, c)) {
698 int indexed_modcall(int comp, int idx, REQUEST *request)
701 modcallable *list = NULL;
702 virtual_server_t *server;
705 * Hack to find the correct virtual server.
707 rcode = virtual_server_idx(request->server);
708 for (server = virtual_servers[rcode];
710 server = server->next) {
711 if (!request->server && !server->name) break;
713 if ((request->server && server->name) &&
714 (strcmp(request->server, server->name) == 0)) break;
718 RDEBUG("No such virtual server \"%s\"", request->server);
719 return RLM_MODULE_FAIL;
723 list = server->mc[comp];
724 if (!list) RDEBUG2(" WARNING: Empty %s section. Using default return values.", section_type_value[comp].section);
727 indexed_modcallable *this;
729 this = lookup_by_index(server->components, comp, idx);
731 list = this->modulelist;
733 RDEBUG2(" WARNING: Unknown value specified for %s. Cannot perform requested action.",
734 section_type_value[comp].typename);
738 if (server->subcs[comp]) {
740 RDEBUG("# Executing section %s from file %s",
741 section_type_value[comp].section,
742 cf_section_filename(server->subcs[comp]));
744 RDEBUG("# Executing group from file %s",
745 cf_section_filename(server->subcs[comp]));
748 request->component = section_type_value[comp].section;
750 rcode = modcall(comp, list, request);
752 request->module = "";
753 request->component = "<core>";
758 * Load a sub-module list, as found inside an Auth-Type foo {}
761 static int load_subcomponent_section(modcallable *parent, CONF_SECTION *cs,
762 rbtree_t *components, int attr, int comp)
764 indexed_modcallable *subcomp;
767 const char *name2 = cf_section_name2(cs);
769 rad_assert(comp >= RLM_COMPONENT_AUTH);
770 rad_assert(comp < RLM_COMPONENT_COUNT);
776 cf_log_err(cf_sectiontoitem(cs),
777 "No name specified for %s block",
778 section_type_value[comp].typename);
785 ml = compile_modgroup(parent, comp, cs);
791 * We must assign a numeric index to this subcomponent.
792 * It is generated and placed in the dictionary
793 * automatically. If it isn't found, it's a serious
796 dval = dict_valbyname(attr, 0, name2);
798 cf_log_err(cf_sectiontoitem(cs),
799 "%s %s Not previously configured",
800 section_type_value[comp].typename, name2);
801 modcallable_free(&ml);
805 subcomp = new_sublist(components, comp, dval->value);
807 modcallable_free(&ml);
811 subcomp->modulelist = ml;
815 static int define_type(const DICT_ATTR *dattr, const char *name)
821 * If the value already exists, don't
824 dval = dict_valbyname(dattr->attr, dattr->vendor, name);
828 * Create a new unique value with a
829 * meaningless number. You can't look at
830 * it from outside of this code, so it
831 * doesn't matter. The only requirement
832 * is that it's unique.
835 value = fr_rand() & 0x00ffffff;
836 } while (dict_valbyattr(dattr->attr, dattr->vendor, value));
838 if (dict_addvalue(name, dattr->name, value) < 0) {
839 radlog(L_ERR, "%s", fr_strerror());
846 static int load_component_section(CONF_SECTION *cs,
847 rbtree_t *components, int comp)
852 indexed_modcallable *subcomp;
854 const char *visiblename;
855 const DICT_ATTR *dattr;
858 * Find the attribute used to store VALUEs for this section.
860 dattr = dict_attrbyvalue(section_type_value[comp].attr, 0);
862 cf_log_err(cf_sectiontoitem(cs),
863 "No such attribute %s",
864 section_type_value[comp].typename);
869 * Loop over the entries in the named section, loading
870 * the sections this time.
872 for (modref = cf_item_find_next(cs, NULL);
874 modref = cf_item_find_next(cs, modref)) {
876 CONF_PAIR *cp = NULL;
877 CONF_SECTION *scs = NULL;
879 if (cf_item_is_section(modref)) {
880 scs = cf_itemtosection(modref);
882 name1 = cf_section_name1(scs);
885 section_type_value[comp].typename) == 0) {
886 if (!load_subcomponent_section(NULL, scs,
890 return -1; /* FIXME: memleak? */
897 } else if (cf_item_is_pair(modref)) {
898 cp = cf_itemtopair(modref);
901 continue; /* ignore it */
905 * Try to compile one entry.
907 this = compile_modsingle(NULL, comp, modref, &modname);
909 cf_log_err(cf_sectiontoitem(cs),
910 "Errors parsing %s section.\n",
911 cf_section_name1(cs));
916 * Look for Auth-Type foo {}, which are special
917 * cases of named sections, and allowable ONLY
920 * i.e. They're not allowed in a "group" or "redundant"
923 if (comp == RLM_COMPONENT_AUTH) {
925 const char *modrefname = NULL;
927 modrefname = cf_pair_attr(cp);
929 modrefname = cf_section_name2(scs);
931 modcallable_free(&this);
932 cf_log_err(cf_sectiontoitem(cs),
933 "Errors parsing %s sub-section.\n",
934 cf_section_name1(scs));
939 dval = dict_valbyname(PW_AUTH_TYPE, 0, modrefname);
942 * It's a section, but nothing we
945 modcallable_free(&this);
946 cf_log_err(cf_sectiontoitem(cs),
947 "Unknown Auth-Type \"%s\" in %s sub-section.",
948 modrefname, section_type_value[comp].section);
953 /* See the comment in new_sublist() for explanation
954 * of the special index 0 */
958 subcomp = new_sublist(components, comp, idx);
959 if (subcomp == NULL) {
960 modcallable_free(&this);
964 /* If subcomp->modulelist is NULL, add_to_modcallable will
966 visiblename = cf_section_name2(cs);
967 if (visiblename == NULL)
968 visiblename = cf_section_name1(cs);
969 add_to_modcallable(&subcomp->modulelist, this,
976 static int load_byserver(CONF_SECTION *cs)
979 const char *name = cf_section_name2(cs);
980 rbtree_t *components;
981 virtual_server_t *server = NULL;
982 indexed_modcallable *c;
985 cf_log_info(cs, "server %s { # from file %s",
986 name, cf_section_filename(cs));
988 cf_log_info(cs, "server { # from file %s",
989 cf_section_filename(cs));
992 cf_log_info(cs, " modules {");
994 components = rbtree_create(indexed_modcallable_cmp,
995 indexed_modcallable_free, 0);
997 radlog(L_ERR, "Failed to initialize components\n");
1001 server = rad_malloc(sizeof(*server));
1002 memset(server, 0, sizeof(*server));
1004 server->name = name;
1005 server->created = time(NULL);
1007 server->components = components;
1010 * Define types first.
1012 for (comp = 0; comp < RLM_COMPONENT_COUNT; ++comp) {
1013 CONF_SECTION *subcs;
1017 subcs = cf_section_sub_find(cs,
1018 section_type_value[comp].section);
1019 if (!subcs) continue;
1021 if (cf_item_find_next(subcs, NULL) == NULL) continue;
1024 * Find the attribute used to store VALUEs for this section.
1026 dattr = dict_attrbyvalue(section_type_value[comp].attr, 0);
1028 cf_log_err(cf_sectiontoitem(subcs),
1029 "No such attribute %s",
1030 section_type_value[comp].typename);
1032 if (debug_flag == 0) {
1033 radlog(L_ERR, "Failed to load virtual server %s",
1034 (name != NULL) ? name : "<default>");
1036 virtual_server_free(server);
1041 * Define dynamic types, so that others can reference
1044 for (modref = cf_item_find_next(subcs, NULL);
1046 modref = cf_item_find_next(subcs, modref)) {
1048 CONF_SECTION *subsubcs;
1051 * Create types for simple references
1052 * only when parsing the authenticate
1055 if ((section_type_value[comp].attr == PW_AUTH_TYPE) &&
1056 cf_item_is_pair(modref)) {
1057 CONF_PAIR *cp = cf_itemtopair(modref);
1058 if (!define_type(dattr, cf_pair_attr(cp))) {
1065 if (!cf_item_is_section(modref)) continue;
1067 subsubcs = cf_itemtosection(modref);
1068 name1 = cf_section_name1(subsubcs);
1070 if (strcmp(name1, section_type_value[comp].typename) == 0) {
1071 if (!define_type(dattr,
1072 cf_section_name2(subsubcs))) {
1077 } /* loop over components */
1080 * Loop over all of the known components, finding their
1081 * configuration section, and loading it.
1084 for (comp = 0; comp < RLM_COMPONENT_COUNT; ++comp) {
1085 CONF_SECTION *subcs;
1087 subcs = cf_section_sub_find(cs,
1088 section_type_value[comp].section);
1089 if (!subcs) continue;
1091 if (cf_item_find_next(subcs, NULL) == NULL) continue;
1093 cf_log_module(cs, "Checking %s {...} for more modules to load",
1094 section_type_value[comp].section);
1097 * Skip pre/post-proxy sections if we're not
1102 !mainconfig.proxy_requests &&
1104 ((comp == RLM_COMPONENT_PRE_PROXY) ||
1105 (comp == RLM_COMPONENT_POST_PROXY))) {
1109 #ifdef WITHOUT_ACCOUNTING
1110 if (comp == RLM_COMPONENT_ACCT) continue;
1113 #ifdef WITHOUT_SESSION_MGMT
1114 if (comp == RLM_COMPONENT_SESS) continue;
1117 if (load_component_section(subcs, components, comp) < 0) {
1122 * Cache a default, if it exists. Some people
1123 * put empty sections for some reason...
1125 c = lookup_by_index(components, comp, 0);
1126 if (c) server->mc[comp] = c->modulelist;
1128 server->subcs[comp] = subcs;
1131 } /* loop over components */
1134 * We haven't loaded any of the normal sections. Maybe we're
1135 * supposed to load the vmps section.
1137 * This is a bit of a hack...
1140 CONF_SECTION *subcs;
1142 subcs = cf_section_sub_find(cs, "vmps");
1144 cf_log_module(cs, "Checking vmps {...} for more modules to load");
1145 if (load_component_section(subcs, components,
1146 RLM_COMPONENT_POST_AUTH) < 0) {
1149 c = lookup_by_index(components,
1150 RLM_COMPONENT_POST_AUTH, 0);
1151 if (c) server->mc[RLM_COMPONENT_POST_AUTH] = c->modulelist;
1157 const DICT_ATTR *dattr;
1159 dattr = dict_attrbyname("DHCP-Message-Type");
1162 * Handle each DHCP Message type separately.
1164 if (dattr) for (subcs = cf_subsection_find_next(cs, NULL, "dhcp");
1166 subcs = cf_subsection_find_next(cs, subcs,
1168 const char *name2 = cf_section_name2(subcs);
1170 DEBUG2(" Module: Checking dhcp %s {...} for more modules to load", name2);
1171 if (!load_subcomponent_section(NULL, subcs,
1174 RLM_COMPONENT_POST_AUTH)) {
1175 goto error; /* FIXME: memleak? */
1177 c = lookup_by_index(components,
1178 RLM_COMPONENT_POST_AUTH, 0);
1179 if (c) server->mc[RLM_COMPONENT_POST_AUTH] = c->modulelist;
1186 cf_log_info(cs, " } # modules");
1187 cf_log_info(cs, "} # server");
1189 if (!flag && name) {
1190 DEBUG("WARNING: Server %s is empty, and will do nothing!",
1194 if (debug_flag == 0) {
1195 radlog(L_INFO, "Loaded virtual server %s",
1196 (name != NULL) ? name : "<default>");
1200 * Now that it is OK, insert it into the list.
1202 * This is thread-safe...
1204 comp = virtual_server_idx(name);
1205 server->next = virtual_servers[comp];
1206 virtual_servers[comp] = server;
1209 * Mark OLDER ones of the same name as being unused.
1211 server = server->next;
1213 if ((!name && !server->name) ||
1214 (name && server->name &&
1215 (strcmp(server->name, name) == 0))) {
1216 server->can_free = TRUE;
1219 server = server->next;
1227 * Load all of the virtual servers.
1229 int virtual_servers_load(CONF_SECTION *config)
1231 int null_server = FALSE;
1233 static int first_time = TRUE;
1235 DEBUG2("%s: #### Loading Virtual Servers ####", mainconfig.name);
1238 * Load all of the virtual servers.
1240 for (cs = cf_subsection_find_next(config, NULL, "server");
1242 cs = cf_subsection_find_next(config, cs, "server")) {
1243 if (!cf_section_name2(cs)) null_server = TRUE;
1245 if (load_byserver(cs) < 0) {
1247 * Once we successfully staryed once,
1248 * continue loading the OTHER servers,
1249 * even if one fails.
1251 if (!first_time) continue;
1257 * No empty server defined. Try to load an old-style
1258 * one for backwards compatibility.
1261 if (load_byserver(config) < 0) {
1267 * If we succeed the first time around, remember that.
1274 int module_hup_module(CONF_SECTION *cs, module_instance_t *node, time_t when)
1276 void *insthandle = NULL;
1277 fr_module_hup_t *mh;
1280 !node->entry->module->instantiate ||
1281 ((node->entry->module->type & RLM_TYPE_HUP_SAFE) == 0)) {
1285 cf_log_module(cs, "Trying to reload module \"%s\"", node->name);
1287 if ((node->entry->module->instantiate)(cs, &insthandle) < 0) {
1288 cf_log_err(cf_sectiontoitem(cs),
1289 "HUP failed for module \"%s\". Using old configuration.",
1294 radlog(L_INFO, " Module: Reloaded module \"%s\"", node->name);
1296 module_instance_free_old(cs, node, when);
1299 * Save the old instance handle for later deletion.
1301 mh = rad_malloc(sizeof(*mh));
1304 mh->insthandle = node->insthandle;
1305 mh->next = node->mh;
1308 node->insthandle = insthandle;
1311 * FIXME: Set a timeout to come back in 60s, so that
1312 * we can pro-actively clean up the old instances.
1319 int module_hup(CONF_SECTION *modules)
1324 module_instance_t *node;
1326 if (!modules) return 0;
1331 * Loop over the modules
1333 for (ci=cf_item_find_next(modules, NULL);
1335 ci=cf_item_find_next(modules, ci)) {
1336 const char *instname;
1337 module_instance_t myNode;
1340 * If it's not a section, ignore it.
1342 if (!cf_item_is_section(ci)) continue;
1344 cs = cf_itemtosection(ci);
1345 instname = cf_section_name2(cs);
1346 if (!instname) instname = cf_section_name1(cs);
1348 strlcpy(myNode.name, instname, sizeof(myNode.name));
1349 node = rbtree_finddata(instance_tree, &myNode);
1351 module_hup_module(cs, node, when);
1359 * Parse the module config sections, and load
1360 * and call each module's init() function.
1362 * Libtool makes your life a LOT easier, especially with libltdl.
1363 * see: http://www.gnu.org/software/libtool/
1365 int setup_modules(int reload, CONF_SECTION *config)
1367 CONF_SECTION *cs, *modules;
1368 rad_listen_t *listener;
1370 if (reload) return 0;
1373 * If necessary, initialize libltdl.
1377 * This line works around a completely
1379 * RIDICULOUS INSANE IDIOTIC
1381 * bug in libltdl on certain systems. The "set
1382 * preloaded symbols" macro below ends up
1383 * referencing this name, but it isn't defined
1384 * anywhere in the libltdl source. As a result,
1385 * any program STUPID enough to rely on libltdl
1386 * fails to link, because the symbol isn't
1389 * It's like libtool and libltdl are some kind
1392 #ifdef IE_LIBTOOL_DIE
1393 #define lt__PROGRAM__LTX_preloaded_symbols lt_libltdl_LTX_preloaded_symbols
1397 * Set the default list of preloaded symbols.
1398 * This is used to initialize libltdl's list of
1399 * preloaded modules.
1401 * i.e. Static modules.
1403 LTDL_SET_PRELOADED_SYMBOLS();
1405 if (lt_dlinit() != 0) {
1406 radlog(L_ERR, "Failed to initialize libraries: %s\n",
1412 * Set the search path to ONLY our library directory.
1413 * This prevents the modules from being found from
1414 * any location on the disk.
1416 lt_dlsetsearchpath(radlib_dir);
1419 * Set up the internal module struct.
1421 module_tree = rbtree_create(module_entry_cmp,
1422 module_entry_free, 0);
1424 radlog(L_ERR, "Failed to initialize modules\n");
1428 instance_tree = rbtree_create(module_instance_cmp,
1429 module_instance_free, 0);
1430 if (!instance_tree) {
1431 radlog(L_ERR, "Failed to initialize modules\n");
1436 memset(virtual_servers, 0, sizeof(virtual_servers));
1439 * Remember where the modules were stored.
1441 modules = cf_section_sub_find(config, "modules");
1443 radlog(L_ERR, "Cannot find a \"modules\" section in the configuration file!");
1447 DEBUG2("%s: #### Instantiating modules ####", mainconfig.name);
1450 * Look for the 'instantiate' section, which tells us
1451 * the instantiation order of the modules, and also allows
1452 * us to load modules with no authorize/authenticate/etc.
1455 cs = cf_section_sub_find(config, "instantiate");
1459 module_instance_t *module;
1462 cf_log_info(cs, " instantiate {");
1465 * Loop over the items in the 'instantiate' section.
1467 for (ci=cf_item_find_next(cs, NULL);
1469 ci=cf_item_find_next(cs, ci)) {
1472 * Skip sections and "other" stuff.
1473 * Sections will be handled later, if
1474 * they're referenced at all...
1476 if (!cf_item_is_pair(ci)) {
1480 cp = cf_itemtopair(ci);
1481 name = cf_pair_attr(cp);
1482 module = find_module_instance(modules, name, 1);
1486 } /* loop over items in the subsection */
1488 cf_log_info(cs, " }");
1489 } /* if there's an 'instantiate' section. */
1492 * Loop over the listeners, figuring out which sections
1495 for (listener = mainconfig.listen;
1497 listener = listener->next) {
1501 if (listener->type == RAD_LISTEN_PROXY) continue;
1504 cs = cf_section_sub_find_name2(config,
1505 "server", listener->server);
1506 if (!cs && (listener->server != NULL)) {
1507 listener->print(listener, buffer, sizeof(buffer));
1509 radlog(L_ERR, "No server has been defined for %s", buffer);
1514 if (virtual_servers_load(config) < 0) return -1;
1520 * Call all authorization modules until one returns
1521 * somethings else than RLM_MODULE_OK
1523 int module_authorize(int autz_type, REQUEST *request)
1525 return indexed_modcall(RLM_COMPONENT_AUTZ, autz_type, request);
1529 * Authenticate a user/password with various methods.
1531 int module_authenticate(int auth_type, REQUEST *request)
1533 return indexed_modcall(RLM_COMPONENT_AUTH, auth_type, request);
1536 #ifdef WITH_ACCOUNTING
1538 * Do pre-accounting for ALL configured sessions
1540 int module_preacct(REQUEST *request)
1542 return indexed_modcall(RLM_COMPONENT_PREACCT, 0, request);
1546 * Do accounting for ALL configured sessions
1548 int module_accounting(int acct_type, REQUEST *request)
1550 return indexed_modcall(RLM_COMPONENT_ACCT, acct_type, request);
1554 #ifdef WITH_SESSION_MGMT
1556 * See if a user is already logged in.
1558 * Returns: 0 == OK, 1 == double logins, 2 == multilink attempt
1560 int module_checksimul(int sess_type, REQUEST *request, int maxsimul)
1564 if(!request->username)
1567 request->simul_count = 0;
1568 request->simul_max = maxsimul;
1569 request->simul_mpp = 1;
1571 rcode = indexed_modcall(RLM_COMPONENT_SESS, sess_type, request);
1573 if (rcode != RLM_MODULE_OK) {
1574 /* FIXME: Good spot for a *rate-limited* warning to the log */
1578 return (request->simul_count < maxsimul) ? 0 : request->simul_mpp;
1584 * Do pre-proxying for ALL configured sessions
1586 int module_pre_proxy(int type, REQUEST *request)
1588 return indexed_modcall(RLM_COMPONENT_PRE_PROXY, type, request);
1592 * Do post-proxying for ALL configured sessions
1594 int module_post_proxy(int type, REQUEST *request)
1596 return indexed_modcall(RLM_COMPONENT_POST_PROXY, type, request);
1601 * Do post-authentication for ALL configured sessions
1603 int module_post_auth(int postauth_type, REQUEST *request)
1605 return indexed_modcall(RLM_COMPONENT_POST_AUTH, postauth_type, request);
1609 int module_recv_coa(int recv_coa_type, REQUEST *request)
1611 return indexed_modcall(RLM_COMPONENT_RECV_COA, recv_coa_type, request);
1614 int module_send_coa(int send_coa_type, REQUEST *request)
1616 return indexed_modcall(RLM_COMPONENT_SEND_COA, send_coa_type, request);