/*
- * rlm_ldap.c LDAP authorization and authentication module.
- *
- * 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 is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License, version 2 if the
+ * License as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* 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
+ */
+
+/**
+ * $Id$
+ * @file rlm_ldap.c
+ * @brief LDAP authorization and authentication module.
*
- * Copyright 1999-2012 The FreeRADIUS Server Project.
- *
- * Copyright 2012 Alan DeKok <aland@freeradius.org>
- * Copyright 2012 Arran Cudbard-Bell <a.cudbardb@freeradius.org>
+ * @copyright 1999-2013 The FreeRADIUS Server Project.
+ * @copyright 2012 Alan DeKok <aland@freeradius.org>
+ * @copyright 2012-2013 Arran Cudbard-Bell <a.cudbardb@freeradius.org>
*/
-
#include <freeradius-devel/ident.h>
RCSID("$Id$")
int chase_referrals;
int rebind;
- int ldap_debug; /* Debug flag for LDAP SDK */
+ int ldap_debug; //!< Debug flag for the SDK.
- const char *xlat_name; /* name used to xlat */
+ const char *xlat_name; //!< Instance name.
int expect_password;
/*
* RADIUS attribute to LDAP attribute maps
*/
- VALUE_PAIR_MAP *user_map; /* Applied to users and profiles */
+ value_pair_map_t *user_map; //!< Attribute map applied to users and
+ //!< profiles.
/*
* Access related configuration
} LDAP_CONN;
typedef struct xlat_attrs {
- const VALUE_PAIR_MAP *maps;
+ const value_pair_map_t *maps;
const char *attrs[MAX_ATTRMAP];
} xlat_attrs_t;
int count;
} rlm_ldap_result_t;
-#define LDAP_PROC_SUCCESS 0
-#define LDAP_PROC_ERROR -1
-#define LDAP_PROC_RETRY -2
-#define LDAP_PROC_REJECT -3
+typedef enum {
+ LDAP_PROC_SUCCESS = 0,
+ LDAP_PROC_ERROR = -1,
+ LDAP_PROC_RETRY = -2,
+ LDAP_PROC_REJECT = -3
+} ldap_rcode_t;
-static int process_ldap_errno(ldap_instance *inst, LDAP_CONN **pconn,
+static ldap_rcode_t process_ldap_errno(ldap_instance *inst, LDAP_CONN **pconn,
const char *operation)
{
- int ldap_errno;
+ int ldap_errno;
ldap_get_option((*pconn)->handle, LDAP_OPT_ERROR_NUMBER,
&ldap_errno);
case LDAP_NO_SUCH_OBJECT:
return LDAP_PROC_SUCCESS;
- case LDAP_SERVER_DOWN:
- do_reconnect:
- *pconn = fr_connection_reconnect(inst->pool, *pconn);
- if (!*pconn) return -1;
- return LDAP_PROC_RETRY;
-
case LDAP_INSUFFICIENT_ACCESS:
radlog(L_ERR, "rlm_ldap (%s): %s failed: Insufficient access. "
"Check the identity and password configuration "
case LDAP_TIMELIMIT_EXCEEDED:
exec_trigger(NULL, inst->cs, "modules.ldap.timeout", TRUE);
+ /* FALL-THROUGH */
case LDAP_BUSY:
case LDAP_UNAVAILABLE:
*/
radlog(L_ERR, "rlm_ldap (%s): %s failed: %s",
inst->xlat_name, operation, ldap_err2string(ldap_errno));
- goto do_reconnect;
+ case LDAP_SERVER_DOWN:
+ return LDAP_PROC_RETRY;
case LDAP_INVALID_CREDENTIALS:
case LDAP_CONSTRAINT_VIOLATION:
return LDAP_PROC_REJECT;
+ case LDAP_OPERATIONS_ERROR:
+ DEBUGW("Please set 'chase_referrals=yes' and 'rebind=yes'");
+ DEBUGW("See the ldap module configuration for details");
+ /* FALL-THROUGH */
+
default:
radlog(L_ERR, "rlm_ldap (%s): %s failed: %s",
inst->xlat_name, operation, ldap_err2string(ldap_errno));
LDAPMessage *result = NULL;
struct timeval tv;
-bind:
+retry:
msg_id = ldap_bind(conn->handle, user, password, LDAP_AUTH_SIMPLE);
if (msg_id < 0) goto get_error;
break;
case LDAP_PROC_RETRY:
- if (retry) goto bind;
+ if (retry) {
+ *pconn = fr_connection_reconnect(inst->pool, *pconn);
+ if (*pconn) goto retry;
+ }
module_rcode = RLM_MODULE_FAIL;
break;
do_ldap_option(LDAP_OPT_REFERRALS, "chase_referrals",
LDAP_OPT_ON);
-#if LDAP_SET_REBIND_PROC_ARGS == 3
if (inst->rebind == 1) {
+#if LDAP_SET_REBIND_PROC_ARGS == 3
ldap_set_rebind_proc(handle, ldap_rebind, inst);
- }
+#else
+ DEBUGW("The flag 'rebind = yes' is not supported by the system LDAP library. Ignoring.");
#endif
+ }
} else {
do_ldap_option(LDAP_OPT_REFERRALS, "chase_referrals",
LDAP_OPT_OFF);
}
#endif /* HAVE_LDAP_START_TLS */
- conn = rad_malloc(sizeof(*conn));
+ conn = talloc(NULL, LDAP_CONN);
conn->inst = inst;
conn->handle = handle;
conn->rebound = FALSE;
LDAP_CONN *conn = connection;
ldap_unbind_s(conn->handle);
- free(conn);
+ talloc_free(conn);
return 0;
}
{
int ldap_errno;
int count = 0;
- LDAP_CONN *conn = *pconn;
struct timeval tv;
/*
/*
* Do all searches as the default admin user.
*/
- if (conn->rebound) {
+ if ((*pconn)->rebound) {
ldap_errno = ldap_bind_wrapper(pconn, inst->login,
inst->password, TRUE);
if (ldap_errno != RLM_MODULE_OK) {
return -1;
}
- rad_assert(*pconn != NULL);
- conn = *pconn;
- conn->rebound = FALSE;
+ rad_assert(*pconn);
+ (*pconn)->rebound = FALSE;
}
tv.tv_sec = inst->timeout;
filter);
retry:
- ldap_errno = ldap_search_ext_s(conn->handle, search_basedn, scope,
+ ldap_errno = ldap_search_ext_s((*pconn)->handle, search_basedn, scope,
filter, search_attrs, 0, NULL, NULL,
&tv, 0, presult);
if (ldap_errno != LDAP_SUCCESS) {
case LDAP_PROC_ERROR:
return -1;
case LDAP_PROC_RETRY:
- conn = *pconn;
- goto retry;
+ *pconn = fr_connection_reconnect(inst->pool, *pconn);
+ if (*pconn) goto retry;
+ return -1;
default:
rad_assert(0);
}
}
- count = ldap_count_entries(conn->handle, *presult);
+ count = ldap_count_entries((*pconn)->handle, *presult);
if (count == 0) {
ldap_msgfree(*presult);
RDEBUG("Search returned no results");
ldap_msgfree(result);
ldap_release_socket(inst, conn);
- if (!found){
+ if (!found) {
RDEBUG("User is not a member of specified group");
return 1;
}
return 0;
}
-/** Parse update section
- *
- * Verify that the ldap update section makes sense, and add attribute names
- * to array of attributes for efficient querying later.
- */
-static int build_attrmap(CONF_SECTION *cs, VALUE_PAIR_MAP **head)
-{
- const char *cs_list, *p;
-
- request_refs_t request_def = REQUEST_CURRENT;
- pair_lists_t list_def = PAIR_LIST_REQUEST;
-
- CONF_ITEM *ci = cf_sectiontoitem(cs);
- CONF_PAIR *cp;
-
- unsigned int total = 0;
- VALUE_PAIR_MAP **tail, *map;
- *head = NULL;
- tail = head;
-
- if (!cs) return 0;
-
- cs_list = p = cf_section_name2(cs);
- if (cs_list) {
- request_def = radius_request_name(&p, REQUEST_UNKNOWN);
- if (request_def == REQUEST_UNKNOWN) {
- cf_log_err(ci, "rlm_ldap: Default request specified "
- "in mapping section is invalid");
- return -1;
- }
-
- list_def = fr_str2int(pair_lists, p, PAIR_LIST_UNKNOWN);
- if (list_def == PAIR_LIST_UNKNOWN) {
- cf_log_err(ci, "rlm_ldap: Default list specified "
- "in mapping section is invalid");
- return -1;
- }
- }
-
- for (ci = cf_item_find_next(cs, NULL);
- ci != NULL;
- ci = cf_item_find_next(cs, ci)) {
- if (total++ == MAX_ATTRMAP) {
- cf_log_err(ci, "rlm_ldap: Attribute map size exceeded");
- goto error;
- }
-
- if (!cf_item_is_pair(ci)) {
- cf_log_err(ci, "rlm_ldap: Entry is not in \"attribute ="
- " ldap-attribute\" format");
- goto error;
- }
-
- cp = cf_itemtopair(ci);
- map = radius_cp2map(cp, REQUEST_CURRENT, list_def);
- if (!map) {
- goto error;
- }
-
- *tail = map;
- tail = &(map->next);
- }
-
- return 0;
-
- error:
- radius_mapfree(head);
- return -1;
-}
-
/** Detach from the LDAP server and cleanup internal state.
*
*/
static int ldap_detach(void *instance)
{
ldap_instance *inst = instance;
-
- if (inst->postauth) free(inst->postauth);
- if (inst->accounting) free(inst->accounting);
fr_connection_pool_delete(inst->pool);
-
+
if (inst->user_map) {
radius_mapfree(&inst->user_map);
}
- free(inst);
-
return 0;
}
return 0;
}
- *config = rad_calloc(sizeof(**config));
+ *config = talloc_zero(inst, ldap_acct_section_t);
if (cf_section_parse(cs, *config, acct_section_config) < 0) {
radlog(L_ERR, "rlm_ldap (%s): Failed parsing configuration for "
"section %s", inst->xlat_name, name);
-
- free(*config);
- *config = NULL;
-
return -1;
}
return 0;
}
+static int ldap_map_verify(ldap_instance *inst, value_pair_map_t **head)
+{
+ value_pair_map_t *map;
+
+ if (radius_attrmap(inst->cs, head, PAIR_LIST_REPLY,
+ PAIR_LIST_REQUEST, MAX_ATTRMAP) < 0) {
+ return -1;
+ }
+ /*
+ * Attrmap only performs some basic validation checks, we need
+ * to do rlm_ldap specific checks here.
+ */
+ for (map = *head; map != NULL; map = map->next) {
+ if (map->dst->type != VPT_TYPE_ATTR) {
+ cf_log_err(map->ci, "Left operand must be an "
+ "attribute ref");
+
+ return -1;
+ }
+
+ if (map->src->type == VPT_TYPE_LIST) {
+ cf_log_err(map->ci, "Right operand must not be "
+ "a list");
+
+ return -1;
+ }
+
+ switch (map->src->type)
+ {
+ /*
+ * Only =, :=, += and -= operators are supported for
+ * cache entries.
+ */
+ case VPT_TYPE_LITERAL:
+ case VPT_TYPE_XLAT:
+ case VPT_TYPE_ATTR:
+ switch (map->op) {
+ case T_OP_SET:
+ case T_OP_EQ:
+ case T_OP_SUB:
+ case T_OP_ADD:
+ break;
+
+ default:
+ cf_log_err(map->ci, "Operator \"%s\" not "
+ "allowed for %s values",
+ fr_int2str(fr_tokens, map->op,
+ "¿unknown?"),
+ fr_int2str(vpt_types, map->src->type,
+ "¿unknown?"));
+ return -1;
+ }
+ default:
+ break;
+ }
+ }
+ return 0;
+}
+
/** Parses config
* Uses section of radiusd config file passed as parameter to create an
* instance of the module.
static int ldap_instantiate(CONF_SECTION * conf, void **instance)
{
ldap_instance *inst;
- CONF_SECTION *cs;
- inst = rad_calloc(sizeof *inst);
+ *instance = inst = talloc_zero(conf, ldap_instance);
+ if (!inst) return -1;
+
inst->cs = conf;
inst->chase_referrals = 2; /* use OpenLDAP defaults */
if (!inst->xlat_name) {
inst->xlat_name = cf_section_name1(conf);
}
-
- rad_assert(inst->xlat_name);
/*
* If the configuration parameters can't be parsed, then fail.
/*
* Build the attribute map
*/
- cs = cf_section_sub_find(conf, "update");
- if (cs) {
- if (build_attrmap(cs, &(inst->user_map)) < 0) {
- goto error;
- }
+ if (ldap_map_verify(inst, &(inst->user_map)) < 0) {
+ goto error;
}
/*
*/
paircompare_register(PW_LDAP_GROUP, PW_USER_NAME, ldap_groupcmp, inst);
if (cf_section_name2(conf)) {
- DICT_ATTR *da;
+ const DICT_ATTR *da;
ATTR_FLAGS flags;
char buffer[256];
return -1;
}
- *instance = inst;
return 0;
-
- error:
+
+error:
ldap_detach(inst);
return -1;
}
}
-static VALUE_PAIR *ldap_getvalue(REQUEST *request, const VALUE_PAIR_TMPL *dst,
+static VALUE_PAIR *ldap_getvalue(REQUEST *request, const value_pair_map_t *map,
void *ctx)
{
rlm_ldap_result_t *self = ctx;
* just use whatever was set in the attribute map.
*/
for (i = 0; i < self->count; i++) {
- vp = pairalloc(dst->da);
+ vp = pairalloc(NULL, map->dst->da);
rad_assert(vp);
pairparsevalue(vp, self->values[i]);
static void xlat_attrsfree(const xlat_attrs_t *expanded)
{
- const VALUE_PAIR_MAP *map;
+ const value_pair_map_t *map;
unsigned int total = 0;
const char *name;
name = expanded->attrs[total++];
if (!name) return;
- if (map->src->do_xlat) {
+ switch (map->src->type)
+ {
+ case VPT_TYPE_XLAT:
+ case VPT_TYPE_ATTR:
rad_cfree(name);
+ break;
+ default:
+ break;
}
}
}
-static int xlat_attrs(REQUEST *request, const VALUE_PAIR_MAP *maps,
+static int xlat_attrs(REQUEST *request, const value_pair_map_t *maps,
xlat_attrs_t *expanded)
{
- const VALUE_PAIR_MAP *map;
+ const value_pair_map_t *map;
unsigned int total = 0;
size_t len;
char *buffer;
+ VALUE_PAIR *found, **from = NULL;
+ REQUEST *context;
+
for (map = maps; map != NULL; map = map->next)
{
- if (map->src->do_xlat) {
+ switch (map->src->type)
+ {
+ case VPT_TYPE_XLAT:
buffer = rad_malloc(MAX_ATTR_STR_LEN);
len = radius_xlat(buffer, MAX_ATTR_STR_LEN,
map->src->name, request, NULL, NULL);
- if (!len) {
+ if (len <= 0) {
RDEBUG("Expansion of LDAP attribute "
"\"%s\" failed", map->src->name);
- expanded->attrs[total] = NULL;
-
- xlat_attrsfree(expanded);
-
- return -1;
+ goto error;
}
expanded->attrs[total++] = buffer;
- } else {
+ break;
+
+ case VPT_TYPE_ATTR:
+ context = request;
+
+ if (radius_request(&context, map->src->request) == 0) {
+ from = radius_list(context, map->src->list);
+ }
+ if (!from) continue;
+
+ found = pairfind(*from, map->src->da->attr,
+ map->src->da->vendor, TAG_ANY);
+ if (!found) continue;
+
+ buffer = rad_malloc(MAX_ATTR_STR_LEN);
+ strlcpy(buffer, found->vp_strvalue, MAX_ATTR_STR_LEN);
+
+ expanded->attrs[total++] = buffer;
+ break;
+
+ case VPT_TYPE_LITERAL:
expanded->attrs[total++] = map->src->name;
+ break;
+ default:
+ rad_assert(0);
+ error:
+ expanded->attrs[total] = NULL;
+
+ xlat_attrsfree(expanded);
+
+ return -1;
}
+
}
expanded->attrs[total] = NULL;
LDAP *handle, const xlat_attrs_t *expanded,
LDAPMessage *entry)
{
- const VALUE_PAIR_MAP *map;
+ const value_pair_map_t *map;
unsigned int total = 0;
rlm_ldap_result_t result;
*/
if (inst->expect_password && (debug_flag > 1)) {
if (!pairfind(request->config_items, PW_CLEARTEXT_PASSWORD, 0, TAG_ANY) &&
- !pairfind(request->config_items, PW_NT_PASSWORD, 0, TAG_ANY) &&
- !pairfind(request->config_items, PW_USER_PASSWORD, 0, TAG_ANY) &&
- !pairfind(request->config_items, PW_PASSWORD_WITH_HEADER, 0, TAG_ANY) &&
- !pairfind(request->config_items, PW_CRYPT_PASSWORD, 0, TAG_ANY)) {
- RDEBUG("WARNING: No \"known good\" password "
- "was found in LDAP. Are you sure that "
- "the user is configured correctly?");
- }
+ !pairfind(request->config_items, PW_NT_PASSWORD, 0, TAG_ANY) &&
+ !pairfind(request->config_items, PW_USER_PASSWORD, 0, TAG_ANY) &&
+ !pairfind(request->config_items, PW_PASSWORD_WITH_HEADER, 0, TAG_ANY) &&
+ !pairfind(request->config_items, PW_CRYPT_PASSWORD, 0, TAG_ANY)) {
+ RDEBUGW("No \"known good\" password "
+ "was found in LDAP. Are you sure that "
+ "the user is configured correctly?");
+ }
}
}
/* Add Cleartext-Password attribute to the request */
vp = radius_paircreate(request, &request->config_items,
- PW_CLEARTEXT_PASSWORD, 0,
- PW_TYPE_STRING);
+ PW_CLEARTEXT_PASSWORD, 0);
strlcpy(vp->vp_strvalue, buffer, sizeof(vp->vp_strvalue));
vp->length = strlen(vp->vp_strvalue);
RDEBUG2("Added eDirectory password in check items as %s = %s",
- vp->name, vp->vp_strvalue);
+ vp->da->name, vp->vp_strvalue);
if (inst->edir_autz) {
RDEBUG2("Binding as user for eDirectory authorization "
return RLM_MODULE_INVALID;
}
- if (request->password->attribute != PW_USER_PASSWORD) {
+ if (request->password->da->attr != PW_USER_PASSWORD) {
radlog(L_AUTH, "rlm_ldap (%s): Attribute \"User-Password\" "
"is required for authentication. Cannot use \"%s\".",
- inst->xlat_name, request->password->name);
+ inst->xlat_name, request->password->da->name);
return RLM_MODULE_INVALID;
}
int ldap_errno, rcode, msg_id;
LDAPMessage *result = NULL;
- LDAP_CONN *conn;
+ LDAP_CONN *conn = NULL;
LDAPMod *mod_p[MAX_ATTRMAP + 1], mod_s[MAX_ATTRMAP];
LDAPMod **modify = mod_p;
passed[last_pass] = NULL;
} else if (do_xlat) {
p = rad_malloc(1024);
- radius_xlat(p, 1024, value, request, NULL, NULL);
-
- if (*p == '\0') {
-
+ if (radius_xlat(p, 1024, value, request, NULL, NULL) <= 0) {
RDEBUG("xlat failed or empty value string, "
"skipping attribute \"%s\"", attr);
switch (op)
{
- /*
- * T_OP_EQ is *NOT* supported, it is impossible to
- * support because of the lack of transactions in LDAP
- */
- case T_OP_ADD:
- mod_s[total].mod_op = LDAP_MOD_ADD;
+ /*
+ * T_OP_EQ is *NOT* supported, it is impossible to
+ * support because of the lack of transactions in LDAP
+ */
+ case T_OP_ADD:
+ mod_s[total].mod_op = LDAP_MOD_ADD;
break;
- case T_OP_SET:
- mod_s[total].mod_op = LDAP_MOD_REPLACE;
+
+ case T_OP_SET:
+ mod_s[total].mod_op = LDAP_MOD_REPLACE;
break;
- case T_OP_SUB:
- case T_OP_CMP_FALSE:
- mod_s[total].mod_op = LDAP_MOD_DELETE;
+
+ case T_OP_SUB:
+ case T_OP_CMP_FALSE:
+ mod_s[total].mod_op = LDAP_MOD_DELETE;
break;
+
#ifdef LDAP_MOD_INCREMENT
- case T_OP_INCRM:
- mod_s[total].mod_op = LDAP_MOD_INCREMENT;
+ case T_OP_INCRM:
+ mod_s[total].mod_op = LDAP_MOD_INCREMENT;
break;
#endif
- default:
- radlog(L_ERR, "rlm_ldap (%s): Operator '%s' "
- "is not supported for LDAP modify "
- "operations", inst->xlat_name,
- fr_int2str(fr_tokens, op, "¿unknown?"));
-
- goto error;
+ default:
+ radlog(L_ERR, "rlm_ldap (%s): Operator '%s' "
+ "is not supported for LDAP modify "
+ "operations", inst->xlat_name,
+ fr_int2str(fr_tokens, op, "¿unknown?"));
+
+ goto error;
}
/*
* Perform all modifications as the default admin user.
*/
if (conn->rebound) {
- ldap_errno = ldap_bind_wrapper(&conn,
- inst->login, inst->password,
- TRUE);
+ ldap_errno = ldap_bind_wrapper(&conn, inst->login,
+ inst->password, TRUE);
if (ldap_errno != RLM_MODULE_OK) {
goto error;
}
projects / freeradius.git / blobdiff