diff --git a/lib/pengine/rules.c b/lib/pengine/rules.c
index 374b43c9a8..0a8ededdc9 100644
--- a/lib/pengine/rules.c
+++ b/lib/pengine/rules.c
@@ -1,320 +1,303 @@
/*
* Copyright 2004-2024 the Pacemaker project contributors
*
* The version control history for this file may have further details.
*
* This source code is licensed under the GNU Lesser General Public License
* version 2.1 or later (LGPLv2.1+) WITHOUT ANY WARRANTY.
*/
#include <crm_internal.h>
#include <glib.h>
#include <crm/crm.h>
#include <crm/common/xml.h>
#include <crm/pengine/rules.h>
#include <crm/common/iso8601_internal.h>
#include <crm/common/nvpair_internal.h>
#include <crm/common/rules_internal.h>
#include <crm/common/xml_internal.h>
#include <crm/pengine/internal.h>
#include <crm/pengine/rules_internal.h>
#include <sys/types.h>
#include <regex.h>
CRM_TRACE_INIT_DATA(pe_rules);
/*!
* \internal
* \brief Map pe_rule_eval_data_t to pcmk_rule_input_t
*
* \param[out] new New data struct
* \param[in] old Old data struct
*/
static void
map_rule_input(pcmk_rule_input_t *new, const pe_rule_eval_data_t *old)
{
if (old == NULL) {
return;
}
new->now = old->now;
new->node_attrs = old->node_hash;
if (old->rsc_data != NULL) {
new->rsc_standard = old->rsc_data->standard;
new->rsc_provider = old->rsc_data->provider;
new->rsc_agent = old->rsc_data->agent;
}
if (old->match_data != NULL) {
new->rsc_params = old->match_data->params;
new->rsc_meta = old->match_data->meta;
if (old->match_data->re != NULL) {
new->rsc_id = old->match_data->re->string;
new->rsc_id_submatches = old->match_data->re->pmatch;
new->rsc_id_nmatches = old->match_data->re->nregs;
}
}
if (old->op_data != NULL) {
new->op_name = old->op_data->op_name;
new->op_interval_ms = old->op_data->interval;
}
}
static gint
sort_pairs(gconstpointer a, gconstpointer b, gpointer user_data)
{
const xmlNode *pair_a = a;
const xmlNode *pair_b = b;
pcmk__nvpair_unpack_t *unpack_data = user_data;
const char *score = NULL;
int score_a = 0;
int score_b = 0;
if (a == NULL && b == NULL) {
return 0;
} else if (a == NULL) {
return 1;
} else if (b == NULL) {
return -1;
}
if (pcmk__str_eq(pcmk__xe_id(pair_a), unpack_data->first_id,
pcmk__str_none)) {
return -1;
} else if (pcmk__str_eq(pcmk__xe_id(pair_b), unpack_data->first_id,
pcmk__str_none)) {
return 1;
}
score = crm_element_value(pair_a, PCMK_XA_SCORE);
score_a = char2score(score);
score = crm_element_value(pair_b, PCMK_XA_SCORE);
score_b = char2score(score);
/* If we're overwriting values, we want lowest score first, so the highest
* score is processed last; if we're not overwriting values, we want highest
* score first, so nothing else overwrites it.
*/
if (score_a < score_b) {
return unpack_data->overwrite? -1 : 1;
} else if (score_a > score_b) {
return unpack_data->overwrite? 1 : -1;
}
return 0;
}
static void
populate_hash(xmlNode *nvpair_list, GHashTable *hash, bool overwrite)
{
if (pcmk__xe_is(nvpair_list->children, PCMK__XE_ATTRIBUTES)) {
nvpair_list = nvpair_list->children;
}
for (xmlNode *nvpair = pcmk__xe_first_child(nvpair_list, PCMK_XE_NVPAIR,
NULL, NULL);
nvpair != NULL; nvpair = pcmk__xe_next_same(nvpair)) {
xmlNode *ref_nvpair = pcmk__xe_resolve_idref(nvpair, NULL);
const char *name = NULL;
const char *value = NULL;
const char *old_value = NULL;
if (ref_nvpair == NULL) {
/* Not possible with schema validation enabled (error already
* logged)
*/
continue;
}
- name = crm_element_value(nvpair, PCMK_XA_NAME);
- if (name == NULL) {
- /* @COMPAT Always get name from ref_nvpair. Currently an nvpair with
- * an id-ref is allowed to have a name, which overrides the name in
- * the referenced nvpair.
- *
- * This feature was added by commit 3912538 but is undocumented and
- * inconsistently implemented. The code often ignores name if there
- * is an id-ref, or in some places assumes that id and value exist
- * if name exists.
- *
- * PCMK_XA_NAME with PCMK_XA_ID_REF is already disallowed by the
- * schema for PCMK_XE_NVPAIR.
- */
- name = crm_element_value(ref_nvpair, PCMK_XA_NAME);
- }
-
+ name = crm_element_value(ref_nvpair, PCMK_XA_NAME);
value = crm_element_value(ref_nvpair, PCMK_XA_VALUE);
-
if ((name == NULL) || (value == NULL)) {
continue;
}
old_value = g_hash_table_lookup(hash, name);
if (pcmk__str_eq(value, "#default", pcmk__str_casei)) {
// @COMPAT Deprecated since 2.1.8
pcmk__config_warn("Support for setting meta-attributes (such as "
"%s) to the explicit value '#default' is "
"deprecated and will be removed in a future "
"release", name);
if (old_value != NULL) {
crm_trace("Letting %s default (removing explicit value \"%s\")",
name, value);
g_hash_table_remove(hash, name);
}
} else if (old_value == NULL) {
crm_trace("Setting %s=\"%s\"", name, value);
pcmk__insert_dup(hash, name, value);
} else if (overwrite) {
crm_trace("Setting %s=\"%s\" (overwriting old value \"%s\")",
name, value, old_value);
pcmk__insert_dup(hash, name, value);
}
}
}
static void
unpack_attr_set(gpointer data, gpointer user_data)
{
xmlNode *pair = data;
pcmk__nvpair_unpack_t *unpack_data = user_data;
xmlNode *rule_xml = pcmk__xe_first_child(pair, PCMK_XE_RULE, NULL, NULL);
if ((rule_xml != NULL)
&& (pcmk_evaluate_rule(rule_xml, &(unpack_data->rule_input),
unpack_data->next_change) != pcmk_rc_ok)) {
return;
}
crm_trace("Adding name/value pairs from %s %s overwrite",
pcmk__xe_id(pair), (unpack_data->overwrite? "with" : "without"));
populate_hash(pair, unpack_data->values, unpack_data->overwrite);
}
/*!
* \internal
* \brief Create a sorted list of nvpair blocks
*
* \param[in] xml_obj XML element containing blocks of nvpair elements
* \param[in] set_name If not NULL, only get blocks of this element
*
* \return List of XML blocks of name/value pairs
*/
static GList *
make_pairs(const xmlNode *xml_obj, const char *set_name)
{
GList *unsorted = NULL;
if (xml_obj == NULL) {
return NULL;
}
for (xmlNode *attr_set = pcmk__xe_first_child(xml_obj, NULL, NULL, NULL);
attr_set != NULL; attr_set = pcmk__xe_next(attr_set)) {
if ((set_name == NULL) || pcmk__xe_is(attr_set, set_name)) {
xmlNode *expanded_attr_set = pcmk__xe_resolve_idref(attr_set, NULL);
if (expanded_attr_set == NULL) {
continue; // Not possible with schema validation enabled
}
unsorted = g_list_prepend(unsorted, expanded_attr_set);
}
}
return unsorted;
}
/*!
* \brief Extract nvpair blocks contained by an XML element into a hash table
*
* \param[in,out] top Ignored
* \param[in] xml_obj XML element containing blocks of nvpair elements
* \param[in] set_name If not NULL, only use blocks of this element
* \param[in] rule_data Matching parameters to use when unpacking
* \param[out] hash Where to store extracted name/value pairs
* \param[in] always_first If not NULL, process block with this ID first
* \param[in] overwrite Whether to replace existing values with same
* name (all internal callers pass \c FALSE)
* \param[out] next_change If not NULL, set to when evaluation will change
*/
void
pe_eval_nvpairs(xmlNode *top, const xmlNode *xml_obj, const char *set_name,
const pe_rule_eval_data_t *rule_data, GHashTable *hash,
const char *always_first, gboolean overwrite,
crm_time_t *next_change)
{
GList *pairs = make_pairs(xml_obj, set_name);
if (pairs) {
pcmk__nvpair_unpack_t data = {
.values = hash,
.first_id = always_first,
.overwrite = overwrite,
.next_change = next_change,
};
map_rule_input(&(data.rule_input), rule_data);
pairs = g_list_sort_with_data(pairs, sort_pairs, &data);
g_list_foreach(pairs, unpack_attr_set, &data);
g_list_free(pairs);
}
}
/*!
* \brief Extract nvpair blocks contained by an XML element into a hash table
*
* \param[in,out] top Ignored
* \param[in] xml_obj XML element containing blocks of nvpair elements
* \param[in] set_name Element name to identify nvpair blocks
* \param[in] node_hash Node attributes to use when evaluating rules
* \param[out] hash Where to store extracted name/value pairs
* \param[in] always_first If not NULL, process block with this ID first
* \param[in] overwrite Whether to replace existing values with same
* name (all internal callers pass \c FALSE)
* \param[in] now Time to use when evaluating rules
* \param[out] next_change If not NULL, set to when evaluation will change
*/
void
pe_unpack_nvpairs(xmlNode *top, const xmlNode *xml_obj, const char *set_name,
GHashTable *node_hash, GHashTable *hash,
const char *always_first, gboolean overwrite,
crm_time_t *now, crm_time_t *next_change)
{
pe_rule_eval_data_t rule_data = {
.node_hash = node_hash,
.now = now,
.match_data = NULL,
.rsc_data = NULL,
.op_data = NULL
};
pe_eval_nvpairs(NULL, xml_obj, set_name, &rule_data, hash,
always_first, overwrite, next_change);
}
// Deprecated functions kept only for backward API compatibility
// LCOV_EXCL_START
#include <crm/pengine/rules_compat.h>
gboolean
test_rule(xmlNode * rule, GHashTable * node_hash, enum rsc_role_e role, crm_time_t * now)
{
pcmk_rule_input_t rule_input = {
.node_attrs = node_hash,
.now = now,
};
return pcmk_evaluate_rule(rule, &rule_input, NULL) == pcmk_rc_ok;
}
// LCOV_EXCL_STOP
// End deprecated API