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/*
* Copyright 2004-2021 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>
#ifndef _GNU_SOURCE
# define _GNU_SOURCE
#endif
#include <stdio.h>
#include <string.h>
#include <strings.h>
#include <crm/crm.h>
#include <crm/common/util.h>
/*!
* \brief Get capabilities of a resource agent standard
*
* \param[in] standard Standard name
*
* \return Bitmask of enum pcmk_ra_caps values
*/
uint32_t
pcmk_get_ra_caps(const char *standard)
{
/* @COMPAT This should probably be case-sensitive, but isn't,
* for backward compatibility.
*/
if (standard == NULL) {
return pcmk_ra_cap_none;
} else if (!strcasecmp(standard, PCMK_RESOURCE_CLASS_OCF)) {
return pcmk_ra_cap_provider | pcmk_ra_cap_params
| pcmk_ra_cap_unique | pcmk_ra_cap_promotable;
} else if (!strcasecmp(standard, PCMK_RESOURCE_CLASS_STONITH)) {
/* @COMPAT Stonith resources can't really be unique clones, but we've
* allowed it in the past and have it in some scheduler regression tests
* (which were likely never used as real configurations).
*
* @TODO Remove pcmk_ra_cap_unique at the next major schema version
* bump, with a transform to remove globally-unique from the config.
*/
return pcmk_ra_cap_params | pcmk_ra_cap_unique | pcmk_ra_cap_stdin
| pcmk_ra_cap_fence_params;
} else if (!strcasecmp(standard, PCMK_RESOURCE_CLASS_SYSTEMD)
|| !strcasecmp(standard, PCMK_RESOURCE_CLASS_SERVICE)
|| !strcasecmp(standard, PCMK_RESOURCE_CLASS_LSB)
|| !strcasecmp(standard, PCMK_RESOURCE_CLASS_UPSTART)) {
/* Since service can map to LSB, systemd, or upstart, these should
* have identical capabilities
*/
return pcmk_ra_cap_status;
} else if (!strcasecmp(standard, PCMK_RESOURCE_CLASS_NAGIOS)) {
return pcmk_ra_cap_params;
}
return pcmk_ra_cap_none;
}
int
pcmk__effective_rc(int rc)
{
int remapped_rc = rc;
switch (rc) {
case PCMK_OCF_DEGRADED:
remapped_rc = PCMK_OCF_OK;
break;
case PCMK_OCF_DEGRADED_PROMOTED:
remapped_rc = PCMK_OCF_RUNNING_PROMOTED;
break;
default:
break;
}
return remapped_rc;
}
char *
crm_generate_ra_key(const char *standard, const char *provider,
const char *type)
{
bool std_empty = pcmk__str_empty(standard);
bool prov_empty = pcmk__str_empty(provider);
bool ty_empty = pcmk__str_empty(type);
if (std_empty || ty_empty) {
return NULL;
}
return crm_strdup_printf("%s%s%s:%s",
standard,
(prov_empty ? "" : ":"), (prov_empty ? "" : provider),
type);
}
/*!
* \brief Parse a "standard[:provider]:type" agent specification
*
* \param[in] spec Agent specification
* \param[out] standard Newly allocated memory containing agent standard (or NULL)
* \param[out] provider Newly allocated memory containing agent provider (or NULL)
* \param[put] type Newly allocated memory containing agent type (or NULL)
*
* \return pcmk_ok if the string could be parsed, -EINVAL otherwise
*
* \note It is acceptable for the type to contain a ':' if the standard supports
* that. For example, systemd supports the form "systemd:UNIT@A:B".
* \note It is the caller's responsibility to free the returned values.
*/
int
crm_parse_agent_spec(const char *spec, char **standard, char **provider,
char **type)
{
char *colon;
CRM_CHECK(spec && standard && provider && type, return -EINVAL);
*standard = NULL;
*provider = NULL;
*type = NULL;
colon = strchr(spec, ':');
if ((colon == NULL) || (colon == spec)) {
return -EINVAL;
}
*standard = strndup(spec, colon - spec);
spec = colon + 1;
if (pcmk_is_set(pcmk_get_ra_caps(*standard), pcmk_ra_cap_provider)) {
colon = strchr(spec, ':');
if ((colon == NULL) || (colon == spec)) {
free(*standard);
return -EINVAL;
}
*provider = strndup(spec, colon - spec);
spec = colon + 1;
}
if (*spec == '\0') {
free(*standard);
free(*provider);
return -EINVAL;
}
*type = strdup(spec);
return pcmk_ok;
}
/*!
* \brief Check whether a given stonith parameter is handled by Pacemaker
*
* Return true if a given string is the name of one of the special resource
* instance attributes interpreted directly by Pacemaker for stonith-class
* resources.
*
* \param[in] param Parameter name to check
*
* \return true if \p param is a special fencing parameter
*/
bool
pcmk_stonith_param(const char *param)
{
if (param == NULL) {
return false;
}
if (pcmk__str_any_of(param, PCMK_STONITH_PROVIDES,
PCMK_STONITH_STONITH_TIMEOUT, NULL)) {
return true;
}
if (!pcmk__starts_with(param, "pcmk_")) { // Short-circuit common case
return false;
}
if (pcmk__str_any_of(param,
PCMK_STONITH_ACTION_LIMIT,
PCMK_STONITH_DELAY_BASE,
PCMK_STONITH_DELAY_MAX,
PCMK_STONITH_HOST_ARGUMENT,
PCMK_STONITH_HOST_CHECK,
PCMK_STONITH_HOST_LIST,
PCMK_STONITH_HOST_MAP,
NULL)) {
return true;
}
param = strchr(param + 5, '_'); // Skip past "pcmk_ACTION"
return pcmk__str_any_of(param, "_action", "_timeout", "_retries", NULL);
}
// Deprecated functions kept only for backward API compatibility
// LCOV_EXCL_START
#include <crm/common/agents_compat.h>
bool
crm_provider_required(const char *standard)
{
return pcmk_is_set(pcmk_get_ra_caps(standard), pcmk_ra_cap_provider);
}
// LCOV_EXCL_STOP
// End deprecated API
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