/*
* Copyright 2010-2020 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 <sys/types.h>
#include <stdio.h>
#include <errno.h>
#include <unistd.h>
#include <dirent.h>
#include <fcntl.h>
#include <crm/crm.h>
#include <crm/common/mainloop.h>
#include <crm/services.h>
#include <crm/stonith-ng.h>
#include <crm/msg_xml.h>
#include "services_private.h"
#include "services_lsb.h"
#if SUPPORT_UPSTART
# include <upstart.h>
#endif
#if SUPPORT_SYSTEMD
# include <systemd.h>
#endif
#if SUPPORT_NAGIOS
# include <services_nagios.h>
#endif
/* TODO: Develop a rollover strategy */
static int operations = 0;
static GHashTable *recurring_actions = NULL;
/* ops waiting to run async because of conflicting active
* pending ops */
static GList *blocked_ops = NULL;
/* ops currently active (in-flight) */
static GList *inflight_ops = NULL;
static void handle_blocked_ops(void);
/*!
* \brief Find first service class that can provide a specified agent
*
* \param[in] agent Name of agent to search for
*
* \return Service class if found, NULL otherwise
*
* \note The priority is LSB, then systemd, then upstart. It would be preferable
* to put systemd first, but LSB merely requires a file existence check,
* while systemd requires contacting D-Bus.
*/
const char *
resources_find_service_class(const char *agent)
{
if (services__lsb_agent_exists(agent)) {
return PCMK_RESOURCE_CLASS_LSB;
}
#if SUPPORT_SYSTEMD
if (systemd_unit_exists(agent)) {
return PCMK_RESOURCE_CLASS_SYSTEMD;
}
#endif
#if SUPPORT_UPSTART
if (upstart_job_exists(agent)) {
return PCMK_RESOURCE_CLASS_UPSTART;
}
#endif
return NULL;
}
static inline void
init_recurring_actions(void)
{
if (recurring_actions == NULL) {
recurring_actions = g_hash_table_new_full(g_str_hash, g_str_equal, NULL,
NULL);
}
}
/*!
* \internal
* \brief Check whether op is in-flight systemd or upstart op
*
* \param[in] op Operation to check
*
* \return TRUE if op is in-flight systemd or upstart op
*/
static inline gboolean
inflight_systemd_or_upstart(svc_action_t *op)
{
return pcmk__strcase_any_of(op->standard, PCMK_RESOURCE_CLASS_SYSTEMD,
PCMK_RESOURCE_CLASS_UPSTART, NULL) &&
g_list_find(inflight_ops, op) != NULL;
}
/*!
* \internal
* \brief Expand "service" alias to an actual resource class
*
* \param[in] rsc Resource name (for logging only)
* \param[in] standard Resource class as configured
* \param[in] agent Agent name to look for
*
* \return Newly allocated string with actual resource class
*
* \note The caller is responsible for calling free() on the result.
*/
static char *
expand_resource_class(const char *rsc, const char *standard, const char *agent)
{
char *expanded_class = NULL;
if (strcasecmp(standard, PCMK_RESOURCE_CLASS_SERVICE) == 0) {
const char *found_class = resources_find_service_class(agent);
if (found_class) {
crm_debug("Found %s agent %s for %s", found_class, agent, rsc);
expanded_class = strdup(found_class);
} else {
crm_info("Assuming resource class lsb for agent %s for %s",
agent, rsc);
expanded_class = strdup(PCMK_RESOURCE_CLASS_LSB);
}
} else {
expanded_class = strdup(standard);
}
CRM_ASSERT(expanded_class);
return expanded_class;
}
/*!
* \brief Duplicate a file path, inserting a prefix if not absolute
*
* \param[in] filename File path to duplicate
* \param[in] dirname If filename is not absolute, prefix to add
*
* \return Newly allocated memory with full path
*/
static char *
dup_file_path(const char *filename, const char *dirname)
{
return (*filename == '/')? strdup(filename)
: crm_strdup_printf("%s/%s", dirname, filename);
}
svc_action_t *
resources_action_create(const char *name, const char *standard,
const char *provider, const char *agent,
const char *action, guint interval_ms, int timeout,
GHashTable *params, enum svc_action_flags flags)
{
svc_action_t *op = NULL;
uint32_t ra_caps = 0;
/*
* Do some up front sanity checks before we go off and
* build the svc_action_t instance.
*/
if (pcmk__str_empty(name)) {
crm_err("Cannot create operation without resource name");
goto return_error;
}
if (pcmk__str_empty(standard)) {
crm_err("Cannot create operation for %s without resource class", name);
goto return_error;
}
ra_caps = pcmk_get_ra_caps(standard);
if (pcmk_is_set(ra_caps, pcmk_ra_cap_provider)
&& pcmk__str_empty(provider)) {
crm_err("Cannot create operation for %s without provider", name);
goto return_error;
}
if (pcmk__str_empty(agent)) {
crm_err("Cannot create operation for %s without agent name", name);
goto return_error;
}
if (pcmk__str_empty(action)) {
crm_err("Cannot create operation for %s without operation name", name);
goto return_error;
}
/*
* Sanity checks passed, proceed!
*/
op = calloc(1, sizeof(svc_action_t));
op->opaque = calloc(1, sizeof(svc_action_private_t));
op->rsc = strdup(name);
op->interval_ms = interval_ms;
op->timeout = timeout;
op->standard = expand_resource_class(name, standard, agent);
op->agent = strdup(agent);
op->sequence = ++operations;
op->flags = flags;
op->id = pcmk__op_key(name, action, interval_ms);
if (pcmk_is_set(ra_caps, pcmk_ra_cap_status)
&& pcmk__str_eq(action, "monitor", pcmk__str_casei)) {
op->action = strdup("status");
} else {
op->action = strdup(action);
}
if (pcmk_is_set(ra_caps, pcmk_ra_cap_provider)) {
op->provider = strdup(provider);
}
if (pcmk_is_set(ra_caps, pcmk_ra_cap_params)) {
op->params = params;
params = NULL; // so we don't free them in this function
}
if (strcasecmp(op->standard, PCMK_RESOURCE_CLASS_OCF) == 0) {
op->opaque->exec = crm_strdup_printf("%s/resource.d/%s/%s",
OCF_ROOT_DIR, provider, agent);
op->opaque->args[0] = strdup(op->opaque->exec);
op->opaque->args[1] = strdup(op->action);
} else if (strcasecmp(op->standard, PCMK_RESOURCE_CLASS_LSB) == 0) {
op->opaque->exec = services__lsb_agent_path(op->agent);
op->opaque->args[0] = strdup(op->opaque->exec);
op->opaque->args[1] = strdup(op->action);
#if SUPPORT_SYSTEMD
} else if (strcasecmp(op->standard, PCMK_RESOURCE_CLASS_SYSTEMD) == 0) {
op->opaque->exec = strdup("systemd-dbus");
#endif
#if SUPPORT_UPSTART
} else if (strcasecmp(op->standard, PCMK_RESOURCE_CLASS_UPSTART) == 0) {
op->opaque->exec = strdup("upstart-dbus");
#endif
#if SUPPORT_NAGIOS
} else if (strcasecmp(op->standard, PCMK_RESOURCE_CLASS_NAGIOS) == 0) {
op->opaque->exec = dup_file_path(op->agent, NAGIOS_PLUGIN_DIR);
op->opaque->args[0] = strdup(op->opaque->exec);
if (pcmk__str_eq(op->action, "monitor", pcmk__str_casei) && (op->interval_ms == 0)) {
/* Invoke --version for a nagios probe */
op->opaque->args[1] = strdup("--version");
} else if (op->params) {
GHashTableIter iter;
char *key = NULL;
char *value = NULL;
int index = 1;
static int args_size = sizeof(op->opaque->args) / sizeof(char *);
g_hash_table_iter_init(&iter, op->params);
while (g_hash_table_iter_next(&iter, (gpointer *) & key, (gpointer *) & value) &&
index <= args_size - 3) {
if (pcmk__str_eq(key, XML_ATTR_CRM_VERSION, pcmk__str_casei) || strstr(key, CRM_META "_")) {
continue;
}
op->opaque->args[index++] = crm_strdup_printf("--%s", key);
op->opaque->args[index++] = strdup(value);
}
}
// Nagios actions don't need to keep the parameters
if (op->params != NULL) {
g_hash_table_destroy(op->params);
op->params = NULL;
}
#endif
} else {
crm_err("Unknown resource standard: %s", op->standard);
goto return_error;
}
if(params) {
g_hash_table_destroy(params);
}
return op;
return_error:
if(params) {
g_hash_table_destroy(params);
}
services_action_free(op);
return NULL;
}
svc_action_t *
services_action_create_generic(const char *exec, const char *args[])
{
svc_action_t *op;
unsigned int cur_arg;
op = calloc(1, sizeof(*op));
op->opaque = calloc(1, sizeof(svc_action_private_t));
op->opaque->exec = strdup(exec);
op->opaque->args[0] = strdup(exec);
for (cur_arg = 1; args && args[cur_arg - 1]; cur_arg++) {
op->opaque->args[cur_arg] = strdup(args[cur_arg - 1]);
if (cur_arg == DIMOF(op->opaque->args) - 1) {
crm_err("svc_action_t args list not long enough for '%s' execution request.", exec);
break;
}
}
return op;
}
/*!
* \brief Create an alert agent action
*
* \param[in] id Alert ID
* \param[in] exec Path to alert agent executable
* \param[in] timeout Action timeout
* \param[in] params Parameters to use with action
* \param[in] sequence Action sequence number
* \param[in] cb_data Data to pass to callback function
*
* \return New action on success, NULL on error
* \note It is the caller's responsibility to free cb_data.
* The caller should not free params explicitly.
*/
svc_action_t *
services_alert_create(const char *id, const char *exec, int timeout,
GHashTable *params, int sequence, void *cb_data)
{
svc_action_t *action = services_action_create_generic(exec, NULL);
CRM_ASSERT(action);
action->timeout = timeout;
action->id = strdup(id);
action->params = params;
action->sequence = sequence;
action->cb_data = cb_data;
return action;
}
/*!
* \brief Set the user and group that an action will execute as
*
* \param[in,out] action Action to modify
* \param[in] user Name of user to execute action as
* \param[in] group Name of group to execute action as
*
* \return pcmk_ok on success, -errno otherwise
*
* \note This will have no effect unless the process executing the action runs
* as root, and the action is not a systemd or upstart action.
* We could implement this for systemd by adding User= and Group= to
* [Service] in the override file, but that seems more likely to cause
* problems than be useful.
*/
int
services_action_user(svc_action_t *op, const char *user)
{
CRM_CHECK((op != NULL) && (user != NULL), return -EINVAL);
return crm_user_lookup(user, &(op->opaque->uid), &(op->opaque->gid));
}
/*!
* \brief Execute an alert agent action
*
* \param[in] action Action to execute
* \param[in] cb Function to call when action completes
*
* \return TRUE if the library will free action, FALSE otherwise
*
* \note If this function returns FALSE, it is the caller's responsibility to
* free the action with services_action_free().
*/
gboolean
services_alert_async(svc_action_t *action, void (*cb)(svc_action_t *op))
{
action->synchronous = false;
action->opaque->callback = cb;
return services_os_action_execute(action);
}
#if SUPPORT_DBUS
/*!
* \internal
* \brief Update operation's pending DBus call, unreferencing old one if needed
*
* \param[in,out] op Operation to modify
* \param[in] pending Pending call to set
*/
void
services_set_op_pending(svc_action_t *op, DBusPendingCall *pending)
{
if (op->opaque->pending && (op->opaque->pending != pending)) {
if (pending) {
crm_info("Lost pending %s DBus call (%p)", op->id, op->opaque->pending);
} else {
crm_trace("Done with pending %s DBus call (%p)", op->id, op->opaque->pending);
}
dbus_pending_call_unref(op->opaque->pending);
}
op->opaque->pending = pending;
if (pending) {
crm_trace("Updated pending %s DBus call (%p)", op->id, pending);
} else {
crm_trace("Cleared pending %s DBus call", op->id);
}
}
#endif
void
services_action_cleanup(svc_action_t * op)
{
if ((op == NULL) || (op->opaque == NULL)) {
return;
}
#if SUPPORT_DBUS
if(op->opaque->timerid != 0) {
crm_trace("Removing timer for call %s to %s", op->action, op->rsc);
g_source_remove(op->opaque->timerid);
op->opaque->timerid = 0;
}
if(op->opaque->pending) {
if (dbus_pending_call_get_completed(op->opaque->pending)) {
// This should never be the case
crm_warn("Result of %s op %s was unhandled",
op->standard, op->id);
} else {
crm_debug("Will ignore any result of canceled %s op %s",
op->standard, op->id);
}
dbus_pending_call_cancel(op->opaque->pending);
services_set_op_pending(op, NULL);
}
#endif
if (op->opaque->stderr_gsource) {
mainloop_del_fd(op->opaque->stderr_gsource);
op->opaque->stderr_gsource = NULL;
}
if (op->opaque->stdout_gsource) {
mainloop_del_fd(op->opaque->stdout_gsource);
op->opaque->stdout_gsource = NULL;
}
}
void
services_action_free(svc_action_t * op)
{
unsigned int i;
if (op == NULL) {
return;
}
/* The operation should be removed from all tracking lists by this point.
* If it's not, we have a bug somewhere, so bail. That may lead to a
* memory leak, but it's better than a use-after-free segmentation fault.
*/
CRM_CHECK(g_list_find(inflight_ops, op) == NULL, return);
CRM_CHECK(g_list_find(blocked_ops, op) == NULL, return);
CRM_CHECK((recurring_actions == NULL)
|| (g_hash_table_lookup(recurring_actions, op->id) == NULL),
return);
services_action_cleanup(op);
if (op->opaque->repeat_timer) {
g_source_remove(op->opaque->repeat_timer);
op->opaque->repeat_timer = 0;
}
free(op->id);
free(op->opaque->exec);
for (i = 0; i < DIMOF(op->opaque->args); i++) {
free(op->opaque->args[i]);
}
free(op->opaque);
free(op->rsc);
free(op->action);
free(op->standard);
free(op->agent);
free(op->provider);
free(op->stdout_data);
free(op->stderr_data);
if (op->params) {
g_hash_table_destroy(op->params);
op->params = NULL;
}
free(op);
}
gboolean
cancel_recurring_action(svc_action_t * op)
{
crm_info("Cancelling %s operation %s", op->standard, op->id);
if (recurring_actions) {
g_hash_table_remove(recurring_actions, op->id);
}
if (op->opaque->repeat_timer) {
g_source_remove(op->opaque->repeat_timer);
op->opaque->repeat_timer = 0;
}
return TRUE;
}
/*!
* \brief Cancel a recurring action
*
* \param[in] name Name of resource that operation is for
* \param[in] action Name of operation to cancel
* \param[in] interval_ms Interval of operation to cancel
*
* \return TRUE if action was successfully cancelled, FALSE otherwise
*/
gboolean
services_action_cancel(const char *name, const char *action, guint interval_ms)
{
gboolean cancelled = FALSE;
char *id = pcmk__op_key(name, action, interval_ms);
svc_action_t *op = NULL;
/* We can only cancel a recurring action */
init_recurring_actions();
op = g_hash_table_lookup(recurring_actions, id);
if (op == NULL) {
goto done;
}
/* Tell operation_finalize() not to reschedule the operation */
op->cancel = TRUE;
/* Stop tracking it as a recurring operation, and stop its repeat timer */
cancel_recurring_action(op);
/* If the op has a PID, it's an in-flight child process, so kill it.
*
* Whether the kill succeeds or fails, the main loop will send the op to
* operation_finished() (and thus operation_finalize()) when the process
* goes away.
*/
if (op->pid != 0) {
crm_info("Terminating in-flight op %s[%d] early because it was cancelled",
id, op->pid);
cancelled = mainloop_child_kill(op->pid);
if (cancelled == FALSE) {
crm_err("Termination of %s[%d] failed", id, op->pid);
}
goto done;
}
#if SUPPORT_DBUS
// In-flight systemd and upstart ops don't have a pid
if (inflight_systemd_or_upstart(op)) {
inflight_ops = g_list_remove(inflight_ops, op);
/* This will cause any result that comes in later to be discarded, so we
* don't call the callback and free the operation twice.
*/
services_action_cleanup(op);
}
#endif
// The rest of this is essentially equivalent to operation_finalize(),
// except without calling handle_blocked_ops()
// Report operation as cancelled
op->status = PCMK_LRM_OP_CANCELLED;
if (op->opaque->callback) {
op->opaque->callback(op);
}
blocked_ops = g_list_remove(blocked_ops, op);
services_action_free(op);
cancelled = TRUE;
// @TODO Initiate handle_blocked_ops() asynchronously
done:
free(id);
return cancelled;
}
gboolean
services_action_kick(const char *name, const char *action, guint interval_ms)
{
svc_action_t * op = NULL;
char *id = pcmk__op_key(name, action, interval_ms);
init_recurring_actions();
op = g_hash_table_lookup(recurring_actions, id);
free(id);
if (op == NULL) {
return FALSE;
}
if (op->pid || inflight_systemd_or_upstart(op)) {
return TRUE;
} else {
if (op->opaque->repeat_timer) {
g_source_remove(op->opaque->repeat_timer);
op->opaque->repeat_timer = 0;
}
recurring_action_timer(op);
return TRUE;
}
}
/*!
* \internal
* \brief Add a new recurring operation, checking for duplicates
*
* \param[in] op Operation to add
*
* \return TRUE if duplicate found (and reschedule), FALSE otherwise
*/
static gboolean
handle_duplicate_recurring(svc_action_t * op)
{
svc_action_t * dup = NULL;
/* check for duplicates */
dup = g_hash_table_lookup(recurring_actions, op->id);
if (dup && (dup != op)) {
/* update user data */
if (op->opaque->callback) {
dup->opaque->callback = op->opaque->callback;
dup->cb_data = op->cb_data;
op->cb_data = NULL;
}
/* immediately execute the next interval */
if (dup->pid != 0) {
if (op->opaque->repeat_timer) {
g_source_remove(op->opaque->repeat_timer);
op->opaque->repeat_timer = 0;
}
recurring_action_timer(dup);
}
/* free the duplicate */
services_action_free(op);
return TRUE;
}
return FALSE;
}
inline static gboolean
action_exec_helper(svc_action_t * op)
{
/* Whether a/synchronous must be decided (op->synchronous) beforehand. */
if (op->standard
&& (strcasecmp(op->standard, PCMK_RESOURCE_CLASS_UPSTART) == 0)) {
#if SUPPORT_UPSTART
return upstart_job_exec(op);
#endif
} else if (op->standard && strcasecmp(op->standard,
PCMK_RESOURCE_CLASS_SYSTEMD) == 0) {
#if SUPPORT_SYSTEMD
return systemd_unit_exec(op);
#endif
} else {
return services_os_action_execute(op);
}
/* The 'op' has probably been freed if the execution functions return TRUE
for the asynchronous 'op'. */
/* Avoid using the 'op' in here. */
return FALSE;
}
void
services_add_inflight_op(svc_action_t * op)
{
if (op == NULL) {
return;
}
CRM_ASSERT(op->synchronous == FALSE);
/* keep track of ops that are in-flight to avoid collisions in the same namespace */
if (op->rsc) {
inflight_ops = g_list_append(inflight_ops, op);
}
}
/*!
* \internal
* \brief Stop tracking an operation that completed
*
* \param[in] op Operation to stop tracking
*/
void
services_untrack_op(svc_action_t *op)
{
/* Op is no longer in-flight or blocked */
inflight_ops = g_list_remove(inflight_ops, op);
blocked_ops = g_list_remove(blocked_ops, op);
/* Op is no longer blocking other ops, so check if any need to run */
handle_blocked_ops();
}
gboolean
services_action_async_fork_notify(svc_action_t * op,
void (*action_callback) (svc_action_t *),
void (*action_fork_callback) (svc_action_t *))
{
op->synchronous = false;
if (action_callback) {
op->opaque->callback = action_callback;
}
if (action_fork_callback) {
op->opaque->fork_callback = action_fork_callback;
}
if (op->interval_ms > 0) {
init_recurring_actions();
if (handle_duplicate_recurring(op) == TRUE) {
/* entry rescheduled, dup freed */
/* exit early */
return TRUE;
}
g_hash_table_replace(recurring_actions, op->id, op);
}
if (!pcmk_is_set(op->flags, SVC_ACTION_NON_BLOCKED)
&& op->rsc && is_op_blocked(op->rsc)) {
blocked_ops = g_list_append(blocked_ops, op);
return TRUE;
}
return action_exec_helper(op);
}
gboolean
services_action_async(svc_action_t * op,
void (*action_callback) (svc_action_t *))
{
return services_action_async_fork_notify(op, action_callback, NULL);
}
static gboolean processing_blocked_ops = FALSE;
gboolean
is_op_blocked(const char *rsc)
{
GList *gIter = NULL;
svc_action_t *op = NULL;
for (gIter = inflight_ops; gIter != NULL; gIter = gIter->next) {
op = gIter->data;
if (pcmk__str_eq(op->rsc, rsc, pcmk__str_casei)) {
return TRUE;
}
}
return FALSE;
}
static void
handle_blocked_ops(void)
{
GList *executed_ops = NULL;
GList *gIter = NULL;
svc_action_t *op = NULL;
gboolean res = FALSE;
if (processing_blocked_ops) {
/* avoid nested calling of this function */
return;
}
processing_blocked_ops = TRUE;
/* n^2 operation here, but blocked ops are incredibly rare. this list
* will be empty 99% of the time. */
for (gIter = blocked_ops; gIter != NULL; gIter = gIter->next) {
op = gIter->data;
if (is_op_blocked(op->rsc)) {
continue;
}
executed_ops = g_list_append(executed_ops, op);
res = action_exec_helper(op);
if (res == FALSE) {
op->status = PCMK_LRM_OP_ERROR;
/* this can cause this function to be called recursively
* which is why we have processing_blocked_ops static variable */
operation_finalize(op);
}
}
for (gIter = executed_ops; gIter != NULL; gIter = gIter->next) {
op = gIter->data;
blocked_ops = g_list_remove(blocked_ops, op);
}
g_list_free(executed_ops);
processing_blocked_ops = FALSE;
}
static gboolean
action_get_metadata(svc_action_t *op)
{
const char *class = op->standard;
if (op->agent == NULL) {
crm_err("meta-data requested without specifying agent");
return FALSE;
}
if (class == NULL) {
crm_err("meta-data requested for agent %s without specifying class",
op->agent);
return FALSE;
}
if (!strcmp(class, PCMK_RESOURCE_CLASS_SERVICE)) {
class = resources_find_service_class(op->agent);
}
if (class == NULL) {
crm_err("meta-data requested for %s, but could not determine class",
op->agent);
return FALSE;
}
if (pcmk__str_eq(class, PCMK_RESOURCE_CLASS_LSB, pcmk__str_casei)) {
return (services__get_lsb_metadata(op->agent, &op->stdout_data) >= 0);
}
#if SUPPORT_NAGIOS
if (pcmk__str_eq(class, PCMK_RESOURCE_CLASS_NAGIOS, pcmk__str_casei)) {
return services__get_nagios_metadata(op->agent, &op->stdout_data) >= 0;
}
#endif
return action_exec_helper(op);
}
gboolean
services_action_sync(svc_action_t * op)
{
gboolean rc = TRUE;
if (op == NULL) {
crm_trace("No operation to execute");
return FALSE;
}
op->synchronous = true;
if (pcmk__str_eq(op->action, "meta-data", pcmk__str_casei)) {
/* Synchronous meta-data operations are handled specially. Since most
* resource classes don't provide any meta-data, it has to be
* synthesized from available information about the agent.
*
* services_action_async() doesn't treat meta-data actions specially, so
* it will result in an error for classes that don't support the action.
*/
rc = action_get_metadata(op);
} else {
rc = action_exec_helper(op);
}
crm_trace(" > " PCMK__OP_FMT ": %s = %d",
op->rsc, op->action, op->interval_ms, op->opaque->exec, op->rc);
if (op->stdout_data) {
crm_trace(" > stdout: %s", op->stdout_data);
}
if (op->stderr_data) {
crm_trace(" > stderr: %s", op->stderr_data);
}
return rc;
}
GList *
get_directory_list(const char *root, gboolean files, gboolean executable)
{
return services_os_get_directory_list(root, files, executable);
}
GList *
resources_list_standards(void)
{
GList *standards = NULL;
GList *agents = NULL;
standards = g_list_append(standards, strdup(PCMK_RESOURCE_CLASS_OCF));
standards = g_list_append(standards, strdup(PCMK_RESOURCE_CLASS_LSB));
standards = g_list_append(standards, strdup(PCMK_RESOURCE_CLASS_SERVICE));
#if SUPPORT_SYSTEMD
agents = systemd_unit_listall();
if (agents) {
standards = g_list_append(standards,
strdup(PCMK_RESOURCE_CLASS_SYSTEMD));
g_list_free_full(agents, free);
}
#endif
#if SUPPORT_UPSTART
agents = upstart_job_listall();
if (agents) {
standards = g_list_append(standards,
strdup(PCMK_RESOURCE_CLASS_UPSTART));
g_list_free_full(agents, free);
}
#endif
#if SUPPORT_NAGIOS
agents = services__list_nagios_agents();
if (agents) {
standards = g_list_append(standards,
strdup(PCMK_RESOURCE_CLASS_NAGIOS));
g_list_free_full(agents, free);
}
#endif
return standards;
}
GList *
resources_list_providers(const char *standard)
{
if (pcmk_is_set(pcmk_get_ra_caps(standard), pcmk_ra_cap_provider)) {
return resources_os_list_ocf_providers();
}
return NULL;
}
GList *
resources_list_agents(const char *standard, const char *provider)
{
if ((standard == NULL)
|| (strcasecmp(standard, PCMK_RESOURCE_CLASS_SERVICE) == 0)) {
GList *tmp1;
GList *tmp2;
GList *result = services__list_lsb_agents();
if (standard == NULL) {
tmp1 = result;
tmp2 = resources_os_list_ocf_agents(NULL);
if (tmp2) {
result = g_list_concat(tmp1, tmp2);
}
}
#if SUPPORT_SYSTEMD
tmp1 = result;
tmp2 = systemd_unit_listall();
if (tmp2) {
result = g_list_concat(tmp1, tmp2);
}
#endif
#if SUPPORT_UPSTART
tmp1 = result;
tmp2 = upstart_job_listall();
if (tmp2) {
result = g_list_concat(tmp1, tmp2);
}
#endif
return result;
} else if (strcasecmp(standard, PCMK_RESOURCE_CLASS_OCF) == 0) {
return resources_os_list_ocf_agents(provider);
} else if (strcasecmp(standard, PCMK_RESOURCE_CLASS_LSB) == 0) {
return services__list_lsb_agents();
#if SUPPORT_SYSTEMD
} else if (strcasecmp(standard, PCMK_RESOURCE_CLASS_SYSTEMD) == 0) {
return systemd_unit_listall();
#endif
#if SUPPORT_UPSTART
} else if (strcasecmp(standard, PCMK_RESOURCE_CLASS_UPSTART) == 0) {
return upstart_job_listall();
#endif
#if SUPPORT_NAGIOS
} else if (strcasecmp(standard, PCMK_RESOURCE_CLASS_NAGIOS) == 0) {
return services__list_nagios_agents();
#endif
}
return NULL;
}
gboolean
resources_agent_exists(const char *standard, const char *provider, const char *agent)
{
GList *standards = NULL;
GList *providers = NULL;
GListPtr iter = NULL;
gboolean rc = FALSE;
gboolean has_providers = FALSE;
standards = resources_list_standards();
for (iter = standards; iter != NULL; iter = iter->next) {
if (pcmk__str_eq(iter->data, standard, pcmk__str_none)) {
rc = TRUE;
break;
}
}
if (rc == FALSE) {
goto done;
}
rc = FALSE;
has_providers = pcmk_is_set(pcmk_get_ra_caps(standard), pcmk_ra_cap_provider);
if (has_providers == TRUE && provider != NULL) {
providers = resources_list_providers(standard);
for (iter = providers; iter != NULL; iter = iter->next) {
if (pcmk__str_eq(iter->data, provider, pcmk__str_none)) {
rc = TRUE;
break;
}
}
} else if (has_providers == FALSE && provider == NULL) {
rc = TRUE;
}
if (rc == FALSE) {
goto done;
}
if (pcmk__str_eq(standard, PCMK_RESOURCE_CLASS_SERVICE, pcmk__str_casei)) {
if (services__lsb_agent_exists(agent)) {
rc = TRUE;
#if SUPPORT_SYSTEMD
} else if (systemd_unit_exists(agent)) {
rc = TRUE;
#endif
#if SUPPORT_UPSTART
} else if (upstart_job_exists(agent)) {
rc = TRUE;
#endif
} else {
rc = FALSE;
}
} else if (pcmk__str_eq(standard, PCMK_RESOURCE_CLASS_OCF, pcmk__str_casei)) {
rc = services__ocf_agent_exists(provider, agent);
} else if (pcmk__str_eq(standard, PCMK_RESOURCE_CLASS_LSB, pcmk__str_casei)) {
rc = services__lsb_agent_exists(agent);
#if SUPPORT_SYSTEMD
} else if (pcmk__str_eq(standard, PCMK_RESOURCE_CLASS_SYSTEMD, pcmk__str_casei)) {
rc = systemd_unit_exists(agent);
#endif
#if SUPPORT_UPSTART
} else if (pcmk__str_eq(standard, PCMK_RESOURCE_CLASS_UPSTART, pcmk__str_casei)) {
rc = upstart_job_exists(agent);
#endif
#if SUPPORT_NAGIOS
} else if (pcmk__str_eq(standard, PCMK_RESOURCE_CLASS_NAGIOS, pcmk__str_casei)) {
rc = services__nagios_agent_exists(agent);
#endif
} else {
rc = FALSE;
}
done:
g_list_free(standards);
g_list_free(providers);
return rc;
}