/** Set the next section type if it's not already set
*
* @param[in] request The current request.
* @param[in] type_da to use. Usually attr_auth_type.
* @param[in] enumv Enumeration value of the specified type_da.
*/
bool module_section_type_set(REQUEST *request, fr_dict_attr_t const *type_da, fr_dict_enum_t const *enumv)
{
VALUE_PAIR *vp;
switch (pair_update_control(&vp, type_da)) {
case 0:
fr_value_box_copy(vp, &vp->data, enumv->value);
vp->data.enumv = vp->da; /* So we get the correct string alias */
RDEBUG2("Setting &control:%pP", vp);
return true;
case 1:
RDEBUG2("&control:%s already set. Not setting to %s", vp->da->name, enumv->alias);
return false;
default:
MEM(0);
return false;
}
}
/** Create and insert a cache entry
*
* @return
* - #RLM_MODULE_OK on success.
* - #RLM_MODULE_UPDATED if we merged the cache entry.
* - #RLM_MODULE_FAIL on failure.
*/
static rlm_rcode_t cache_insert(rlm_cache_t const *inst, REQUEST *request, rlm_cache_handle_t **handle,
uint8_t const *key, size_t key_len, int ttl)
{
vp_map_t const *map;
vp_map_t **last, *c_map;
VALUE_PAIR *vp;
bool merge = false;
rlm_cache_entry_t *c;
size_t len;
TALLOC_CTX *pool;
if ((inst->config.max_entries > 0) && inst->driver->count &&
(inst->driver->count(&inst->config, inst->driver_inst->data, request, handle) > inst->config.max_entries)) {
RWDEBUG("Cache is full: %d entries", inst->config.max_entries);
return RLM_MODULE_FAIL;
}
c = cache_alloc(inst, request);
if (!c) return RLM_MODULE_FAIL;
c->key = talloc_memdup(c, key, key_len);
c->key_len = key_len;
c->created = c->expires = request->packet->timestamp.tv_sec;
c->expires += ttl;
last = &c->maps;
RDEBUG2("Creating new cache entry");
/*
* Alloc a pool so we don't have excessive allocs when
* gathering VALUE_PAIRs to cache.
*/
pool = talloc_pool(NULL, 2048);
for (map = inst->maps; map != NULL; map = map->next) {
VALUE_PAIR *to_cache = NULL;
fr_cursor_t cursor;
rad_assert(map->lhs && map->rhs);
/*
* Calling map_to_vp gives us exactly the same result,
* as if this were an update section.
*/
if (map_to_vp(pool, &to_cache, request, map, NULL) < 0) {
RDEBUG2("Skipping %s", map->rhs->name);
continue;
}
for (vp = fr_cursor_init(&cursor, &to_cache);
vp;
vp = fr_cursor_next(&cursor)) {
/*
* Prevent people from accidentally caching
* cache control attributes.
*/
if (map->rhs->type == TMPL_TYPE_LIST) switch (vp->da->attr) {
case FR_CACHE_TTL:
case FR_CACHE_STATUS_ONLY:
case FR_CACHE_MERGE_NEW:
case FR_CACHE_ENTRY_HITS:
RDEBUG2("Skipping %s", vp->da->name);
continue;
default:
break;
}
RINDENT();
if (RDEBUG_ENABLED2) map_debug_log(request, map, vp);
REXDENT();
MEM(c_map = talloc_zero(c, vp_map_t));
c_map->op = map->op;
/*
* Now we turn the VALUE_PAIRs into maps.
*/
switch (map->lhs->type) {
/*
* Attributes are easy, reuse the LHS, and create a new
* RHS with the fr_value_box_t from the VALUE_PAIR.
*/
case TMPL_TYPE_ATTR:
c_map->lhs = map->lhs; /* lhs shouldn't be touched, so this is ok */
do_rhs:
MEM(c_map->rhs = tmpl_init(talloc(c_map, vp_tmpl_t),
TMPL_TYPE_DATA, map->rhs->name, map->rhs->len, T_BARE_WORD));
if (fr_value_box_copy(c_map->rhs, &c_map->rhs->tmpl_value, &vp->data) < 0) {
REDEBUG("Failed copying attribute value");
error:
talloc_free(pool);
talloc_free(c);
return RLM_MODULE_FAIL;
}
c_map->rhs->tmpl_value_type = vp->vp_type;
if (vp->vp_type == FR_TYPE_STRING) {
c_map->rhs->quote = is_printable(vp->vp_strvalue, vp->vp_length) ?
T_SINGLE_QUOTED_STRING : T_DOUBLE_QUOTED_STRING;
}
break;
/*
* Lists are weird... We need to fudge a new LHS template,
* which is a combination of the LHS list and the attribute.
*/
case TMPL_TYPE_LIST:
{
char attr[256];
MEM(c_map->lhs = tmpl_init(talloc(c_map, vp_tmpl_t),
TMPL_TYPE_ATTR, map->lhs->name, map->lhs->len, T_BARE_WORD));
c_map->lhs->tmpl_da = vp->da;
if (vp->da->flags.is_unknown) { /* for tmpl_verify() */
c_map->lhs->tmpl_unknown = fr_dict_unknown_acopy(c_map->lhs, vp->da);
c_map->lhs->tmpl_da = c_map->lhs->tmpl_unknown;
}
c_map->lhs->tmpl_tag = vp->tag;
c_map->lhs->tmpl_list = map->lhs->tmpl_list;
c_map->lhs->tmpl_num = map->lhs->tmpl_num;
c_map->lhs->tmpl_request = map->lhs->tmpl_request;
/*
* We need to rebuild the attribute name, to be the
* one we copied from the source list.
*/
len = tmpl_snprint(attr, sizeof(attr), c_map->lhs);
if (is_truncated(len, sizeof(attr))) {
REDEBUG("Serialized attribute too long. Must be < "
STRINGIFY(sizeof(attr)) " bytes, got %zu bytes", len);
goto error;
}
c_map->lhs->len = len;
c_map->lhs->name = talloc_typed_strdup(c_map->lhs, attr);
}
goto do_rhs;
default:
rad_assert(0);
}
*last = c_map;
last = &(*last)->next;
}
talloc_free_children(pool); /* reset pool state */
}
talloc_free(pool);
/*
* Check to see if we need to merge the entry into the request
*/
vp = fr_pair_find_by_da(request->control, attr_cache_merge_new, TAG_ANY);
if (vp && vp->vp_bool) merge = true;
if (merge) cache_merge(inst, request, c);
for (;;) {
cache_status_t ret;
ret = inst->driver->insert(&inst->config, inst->driver_inst->data, request, *handle, c);
switch (ret) {
case CACHE_RECONNECT:
if (cache_reconnect(handle, inst, request) == 0) continue;
return RLM_MODULE_FAIL;
case CACHE_OK:
RDEBUG2("Committed entry, TTL %d seconds", ttl);
cache_free(inst, &c);
return merge ? RLM_MODULE_UPDATED :
RLM_MODULE_OK;
default:
talloc_free(c); /* Failed insertion - use talloc_free not the driver free */
return RLM_MODULE_FAIL;
}
}
}
