/** Search for and apply an LDAP profile
*
* LDAP profiles are mapped using the same attribute map as user objects, they're used to add common sets of attributes
* to the request.
*
* @param[in] inst rlm_ldap configuration.
* @param[in] request Current request.
* @param[in,out] pconn to use. May change as this function calls functions which auto re-connect.
* @param[in] dn of profile object to apply.
* @param[in] expanded Structure containing a list of xlat expanded attribute names and mapping information.
* @return One of the RLM_MODULE_* values.
*/
rlm_rcode_t rlm_ldap_map_profile(ldap_instance_t const *inst, REQUEST *request, ldap_handle_t **pconn,
char const *dn, rlm_ldap_map_xlat_t const *expanded)
{
rlm_rcode_t rcode = RLM_MODULE_OK;
ldap_rcode_t status;
LDAPMessage *result = NULL, *entry = NULL;
int ldap_errno;
LDAP *handle = (*pconn)->handle;
char filter[LDAP_MAX_FILTER_STR_LEN];
rad_assert(inst->profile_filter); /* We always have a default filter set */
if (!dn || !*dn) {
return RLM_MODULE_OK;
}
if (radius_xlat(filter, sizeof(filter), request, inst->profile_filter, rlm_ldap_escape_func, NULL) < 0) {
REDEBUG("Failed creating profile filter");
return RLM_MODULE_INVALID;
}
status = rlm_ldap_search(inst, request, pconn, dn, LDAP_SCOPE_BASE, filter, expanded->attrs, &result);
switch (status) {
case LDAP_PROC_SUCCESS:
break;
case LDAP_PROC_NO_RESULT:
RDEBUG("Profile object \"%s\" not found", dn);
return RLM_MODULE_NOTFOUND;
default:
return RLM_MODULE_FAIL;
}
rad_assert(*pconn);
rad_assert(result);
entry = ldap_first_entry(handle, result);
if (!entry) {
ldap_get_option(handle, LDAP_OPT_RESULT_CODE, &ldap_errno);
REDEBUG("Failed retrieving entry: %s", ldap_err2string(ldap_errno));
rcode = RLM_MODULE_NOTFOUND;
goto free_result;
}
RDEBUG("Processing profile attributes");
rlm_ldap_map_do(inst, request, handle, expanded, entry);
free_result:
ldap_msgfree(result);
return rcode;
}
static rlm_rcode_t CC_HINT(nonnull) mod_authorize(void *instance, REQUEST *request)
{
rlm_rcode_t rcode = RLM_MODULE_OK;
ldap_rcode_t status;
int ldap_errno;
int i;
ldap_instance_t *inst = instance;
struct berval **values;
VALUE_PAIR *vp;
ldap_handle_t *conn;
LDAPMessage *result, *entry;
char const *dn = NULL;
rlm_ldap_map_xlat_t expanded; /* faster than mallocing every time */
if (!request->username) {
RDEBUG2("Attribute \"User-Name\" is required for authorization");
return RLM_MODULE_NOOP;
}
/*
* Check for valid input, zero length names not permitted
*/
if (request->username->vp_length == 0) {
RDEBUG2("Zero length username not permitted");
return RLM_MODULE_INVALID;
}
if (rlm_ldap_map_xlat(request, inst->user_map, &expanded) < 0) {
return RLM_MODULE_FAIL;
}
conn = mod_conn_get(inst, request);
if (!conn) return RLM_MODULE_FAIL;
/*
* Add any additional attributes we need for checking access, memberships, and profiles
*/
if (inst->userobj_access_attr) {
expanded.attrs[expanded.count++] = inst->userobj_access_attr;
}
if (inst->userobj_membership_attr && (inst->cacheable_group_dn || inst->cacheable_group_name)) {
expanded.attrs[expanded.count++] = inst->userobj_membership_attr;
}
if (inst->profile_attr) {
expanded.attrs[expanded.count++] = inst->profile_attr;
}
if (inst->valuepair_attr) {
expanded.attrs[expanded.count++] = inst->valuepair_attr;
}
expanded.attrs[expanded.count] = NULL;
dn = rlm_ldap_find_user(inst, request, &conn, expanded.attrs, true, &result, &rcode);
if (!dn) {
goto finish;
}
entry = ldap_first_entry(conn->handle, result);
if (!entry) {
ldap_get_option(conn->handle, LDAP_OPT_RESULT_CODE, &ldap_errno);
REDEBUG("Failed retrieving entry: %s", ldap_err2string(ldap_errno));
goto finish;
}
/*
* Check for access.
*/
if (inst->userobj_access_attr) {
rcode = rlm_ldap_check_access(inst, request, conn, entry);
if (rcode != RLM_MODULE_OK) {
goto finish;
}
}
/*
* Check if we need to cache group memberships
*/
if (inst->cacheable_group_dn || inst->cacheable_group_name) {
if (inst->userobj_membership_attr) {
rcode = rlm_ldap_cacheable_userobj(inst, request, &conn, entry, inst->userobj_membership_attr);
if (rcode != RLM_MODULE_OK) {
goto finish;
}
}
rcode = rlm_ldap_cacheable_groupobj(inst, request, &conn);
if (rcode != RLM_MODULE_OK) {
goto finish;
}
}
#ifdef WITH_EDIR
/*
* We already have a Cleartext-Password. Skip edir.
*/
if (pairfind(request->config_items, PW_CLEARTEXT_PASSWORD, 0, TAG_ANY)) {
goto skip_edir;
}
/*
* Retrieve Universal Password if we use eDirectory
*/
if (inst->edir) {
int res = 0;
char password[256];
size_t pass_size = sizeof(password);
/*
* Retrive universal password
*/
res = nmasldap_get_password(conn->handle, dn, password, &pass_size);
if (res != 0) {
REDEBUG("Failed to retrieve eDirectory password: (%i) %s", res, edir_errstr(res));
rcode = RLM_MODULE_FAIL;
goto finish;
}
/*
* Add Cleartext-Password attribute to the request
*/
vp = radius_paircreate(request, &request->config_items, PW_CLEARTEXT_PASSWORD, 0);
pairstrcpy(vp, password);
vp->vp_length = pass_size;
if (RDEBUG_ENABLED3) {
RDEBUG3("Added eDirectory password. control:%s += '%s'", vp->da->name, vp->vp_strvalue);
} else {
RDEBUG2("Added eDirectory password");
}
if (inst->edir_autz) {
RDEBUG2("Binding as user for eDirectory authorization checks");
/*
* Bind as the user
*/
conn->rebound = true;
status = rlm_ldap_bind(inst, request, &conn, dn, vp->vp_strvalue, true);
switch (status) {
case LDAP_PROC_SUCCESS:
rcode = RLM_MODULE_OK;
RDEBUG("Bind as user '%s' was successful", dn);
break;
case LDAP_PROC_NOT_PERMITTED:
rcode = RLM_MODULE_USERLOCK;
goto finish;
case LDAP_PROC_REJECT:
rcode = RLM_MODULE_REJECT;
goto finish;
case LDAP_PROC_BAD_DN:
rcode = RLM_MODULE_INVALID;
goto finish;
case LDAP_PROC_NO_RESULT:
rcode = RLM_MODULE_NOTFOUND;
goto finish;
default:
rcode = RLM_MODULE_FAIL;
goto finish;
};
}
}
skip_edir:
#endif
/*
* Apply ONE user profile, or a default user profile.
*/
if (inst->default_profile) {
char profile[1024];
if (radius_xlat(profile, sizeof(profile), request, inst->default_profile, NULL, NULL) < 0) {
REDEBUG("Failed creating default profile string");
rcode = RLM_MODULE_INVALID;
goto finish;
}
rlm_ldap_map_profile(inst, request, &conn, profile, &expanded);
}
/*
* Apply a SET of user profiles.
*/
if (inst->profile_attr) {
values = ldap_get_values_len(conn->handle, entry, inst->profile_attr);
if (values != NULL) {
for (i = 0; values[i] != NULL; i++) {
char *value;
value = rlm_ldap_berval_to_string(request, values[i]);
rlm_ldap_map_profile(inst, request, &conn, value, &expanded);
talloc_free(value);
}
ldap_value_free_len(values);
}
}
if (inst->user_map || inst->valuepair_attr) {
RDEBUG("Processing user attributes");
RINDENT();
rlm_ldap_map_do(inst, request, conn->handle, &expanded, entry);
REXDENT();
rlm_ldap_check_reply(inst, request);
}
finish:
rlm_ldap_map_xlat_free(&expanded);
if (result) ldap_msgfree(result);
mod_conn_release(inst, conn);
return rcode;
}
