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pcmk_verify.c
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/*
* Copyright 2023-2024 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 <crm/cib/internal.h>
#include <crm/common/output.h>
#include <crm/common/results.h>
#include <crm/common/scheduler.h>
#include <pacemaker-internal.h>
#include <pacemaker.h>
#include <stdint.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include "libpacemaker_private.h"
int
pcmk__parse_cib(pcmk__output_t *out, const char *cib_source, xmlNodePtr *cib_object)
{
// @COMPAT Take an enum for cib_source instead of trying to figure it out?
const char *first = cib_source;
if (cib_source == NULL) {
crm_info("Reading XML from: live cluster");
return cib__signon_query(out, NULL, cib_object);
}
while (isspace(*first)) {
first++;
}
if (*first == '<') {
*cib_object = pcmk__xml_parse(cib_source);
} else {
*cib_object = pcmk__xml_read(cib_source);
}
return (*cib_object == NULL)? ENODATA : pcmk_rc_ok;
}
int
pcmk__verify(pcmk_scheduler_t *scheduler, pcmk__output_t *out,
xmlNode **cib_object)
{
int rc = pcmk_rc_ok;
xmlNode *status = NULL;
xmlNode *cib_object_copy = NULL;
pcmk__assert(cib_object != NULL);
if (!pcmk__xe_is(*cib_object, PCMK_XE_CIB)) {
rc = EBADMSG;
out->err(out, "This tool can only check complete configurations (i.e. those starting with <cib>).");
goto verify_done;
}
status = pcmk_find_cib_element(*cib_object, PCMK_XE_STATUS);
if (status == NULL) {
pcmk__xe_create(*cib_object, PCMK_XE_STATUS);
}
if (!pcmk__validate_xml(*cib_object, NULL,
(xmlRelaxNGValidityErrorFunc) out->err, out)) {
crm_config_error = TRUE;
rc = pcmk_rc_schema_validation;
goto verify_done;
}
rc = pcmk__update_configured_schema(cib_object, false);
if (rc != pcmk_rc_ok) {
crm_config_error = TRUE;
out->err(out, "The cluster will NOT be able to use this configuration.\n"
"Please manually update the configuration to conform to the %s syntax.",
pcmk__highest_schema_name());
goto verify_done;
}
/* Process the configuration to set crm_config_error/crm_config_warning.
*
* @TODO Some parts of the configuration are unpacked only when needed (for
* example, action configuration), so we aren't necessarily checking those.
*/
if (*cib_object != NULL) {
unsigned long long flags = pcmk_sched_no_counts|pcmk_sched_no_compat;
if (status == NULL) {
// No status available, so do minimal checks
flags |= pcmk_sched_validate_only;
}
cib_object_copy = pcmk__xml_copy(NULL, *cib_object);
/* The scheduler takes ownership of the XML object and potentially
* frees it later. We want the caller of pcmk__verify to retain
* ownership of the passed-in XML object, hence we pass in a copy
* to the scheduler.
*/
pcmk__schedule_actions(cib_object_copy, flags, scheduler);
}
verify_done:
if (crm_config_error) {
rc = pcmk_rc_schema_validation;
pcmk__config_err("CIB did not pass schema validation");
} else if (crm_config_warning) {
rc = pcmk_rc_schema_validation;
}
return rc;
}
int
pcmk_verify(xmlNodePtr *xml, const char *cib_source)
{
pcmk_scheduler_t *scheduler = NULL;
pcmk__output_t *out = NULL;
int rc = pcmk_rc_ok;
xmlNode *cib_object = NULL;
rc = pcmk__xml_output_new(&out, xml);
if (rc != pcmk_rc_ok) {
return rc;
}
pe__register_messages(out);
pcmk__register_lib_messages(out);
rc = pcmk__parse_cib(out, cib_source, &cib_object);
if (rc != pcmk_rc_ok) {
out->err(out, "Couldn't parse input");
goto done;
}
scheduler = pe_new_working_set();
if (scheduler == NULL) {
rc = errno;
out->err(out, "Couldn't allocate scheduler data: %s", pcmk_rc_str(rc));
goto done;
}
scheduler->priv = out;
rc = pcmk__verify(scheduler, out, &cib_object);
done:
pe_free_working_set(scheduler);
pcmk__xml_output_finish(out, pcmk_rc2exitc(rc), xml);
free_xml(cib_object);
return rc;
}

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