Пример #1
0
static void
remote_cache_refresh_helper(xmlNode *cib, const char *xpath, const char *field, int flags)
{
    const char *remote = NULL;
    crm_node_t *node = NULL;
    xmlXPathObjectPtr xpathObj = NULL;
    int max = 0;
    int lpc = 0;

    xpathObj = xpath_search(cib, xpath);
    max = numXpathResults(xpathObj);
    for (lpc = 0; lpc < max; lpc++) {
        xmlNode *xml = getXpathResult(xpathObj, lpc);

        CRM_CHECK(xml != NULL, continue);

        remote = crm_element_value(xml, field);
        if (remote) {
            crm_trace("added %s to remote cache", remote);
            node = calloc(1, sizeof(crm_node_t));
            node->flags = flags;
            CRM_ASSERT(node);
            node->uname = strdup(remote);
            node->uuid = strdup(remote);
            node->state = strdup(CRM_NODE_MEMBER);
            g_hash_table_replace(crm_remote_peer_cache, node->uname, node);
        }
    }
    freeXpathObject(xpathObj);
}
Пример #2
0
void
pcmk__apply_acl(xmlNode *xml)
{
    GListPtr aIter = NULL;
    xml_private_t *p = xml->doc->_private;
    xmlXPathObjectPtr xpathObj = NULL;

    if (xml_acl_enabled(xml) == FALSE) {
        crm_trace("Not applying ACLs for %s", p->user);
        return;
    }

    for (aIter = p->acls; aIter != NULL; aIter = aIter->next) {
        int max = 0, lpc = 0;
        xml_acl_t *acl = aIter->data;

        xpathObj = xpath_search(xml, acl->xpath);
        max = numXpathResults(xpathObj);

        for (lpc = 0; lpc < max; lpc++) {
            xmlNode *match = getXpathResult(xpathObj, lpc);
            char *path = xml_get_path(match);

            p = match->_private;
            crm_trace("Applying %x to %s for %s", acl->mode, path, acl->xpath);

#ifdef SUSE_ACL_COMPAT
            if (is_not_set(p->flags, acl->mode)
                && (is_set(p->flags, xpf_acl_read)
                    || is_set(p->flags, xpf_acl_write)
                    || is_set(p->flags, xpf_acl_deny))) {
                crm_config_warn("Configuration element %s is matched by "
                                "multiple ACL rules, only the first applies "
                                "('%s' wins over '%s')",
                                path, __xml_acl_to_text(p->flags),
                                __xml_acl_to_text(acl->mode));
                free(path);
                continue;
            }
#endif
            p->flags |= acl->mode;
            free(path);
        }
        crm_trace("Now enforcing ACL: %s (%d matches)", acl->xpath, max);
        freeXpathObject(xpathObj);
    }

    p = xml->_private;
    if (is_not_set(p->flags, xpf_acl_read)
        && is_not_set(p->flags, xpf_acl_write)) {

        p->flags |= xpf_acl_deny;
        p = xml->doc->_private;
        crm_info("Enforcing default ACL for %s to %s",
                 p->user, crm_element_name(xml));
    }

}
Пример #3
0
gboolean
process_te_message(xmlNode * msg, xmlNode * xml_data)
{
    const char *from = crm_element_value(msg, F_ORIG);
    const char *sys_to = crm_element_value(msg, F_CRM_SYS_TO);
    const char *sys_from = crm_element_value(msg, F_CRM_SYS_FROM);
    const char *ref = crm_element_value(msg, F_CRM_REFERENCE);
    const char *op = crm_element_value(msg, F_CRM_TASK);
    const char *type = crm_element_value(msg, F_CRM_MSG_TYPE);

    crm_trace("Processing %s (%s) message", op, ref);
    crm_log_xml_trace(msg, "ipc");

    if (op == NULL) {
        /* error */

    } else if (sys_to == NULL || strcasecmp(sys_to, CRM_SYSTEM_TENGINE) != 0) {
        crm_trace("Bad sys-to %s", crm_str(sys_to));
        return FALSE;

    } else if (safe_str_eq(op, CRM_OP_INVOKE_LRM)
               && safe_str_eq(sys_from, CRM_SYSTEM_LRMD)
/* 		  && safe_str_eq(type, XML_ATTR_RESPONSE) */
        ) {
        xmlXPathObject *xpathObj = NULL;

        crm_log_xml_trace(msg, "Processing (N)ACK");
        crm_debug("Processing (N)ACK %s from %s", crm_element_value(msg, F_CRM_REFERENCE), from);

        xpathObj = xpath_search(xml_data, "//" XML_LRM_TAG_RSC_OP);
        if (numXpathResults(xpathObj)) {
            int lpc = 0, max = numXpathResults(xpathObj);

            for (lpc = 0; lpc < max; lpc++) {
                xmlNode *rsc_op = getXpathResult(xpathObj, lpc);
                const char *node = get_node_id(rsc_op);

                process_graph_event(rsc_op, node);
            }
            freeXpathObject(xpathObj);

        } else {
            crm_log_xml_err(msg, "Invalid (N)ACK");
            freeXpathObject(xpathObj);
            return FALSE;
        }

    } else {
        crm_err("Unknown command: %s::%s from %s", type, op, sys_from);
    }

    crm_trace("finished processing message");

    return TRUE;
}
Пример #4
0
static void
force_local_option(xmlNode *xml, const char *attr_name, const char *attr_value)
{
    int max = 0;
    int lpc = 0;
    char *xpath_string = NULL;
    xmlXPathObjectPtr xpathObj = NULL;

    xpath_string = crm_strdup_printf("%.128s//%s//nvpair[@name='%.128s']",
                                     get_object_path(XML_CIB_TAG_CRMCONFIG),
                                     XML_CIB_TAG_PROPSET, attr_name);
    xpathObj = xpath_search(xml, xpath_string);
    max = numXpathResults(xpathObj);
    free(xpath_string);

    for (lpc = 0; lpc < max; lpc++) {
        xmlNode *match = getXpathResult(xpathObj, lpc);
        crm_trace("Forcing %s/%s = %s", ID(match), attr_name, attr_value);
        crm_xml_add(match, XML_NVPAIR_ATTR_VALUE, attr_value);
    }

    if(max == 0) {
        xmlNode *configuration = NULL;
        xmlNode *crm_config = NULL;
        xmlNode *cluster_property_set = NULL;

        crm_trace("Creating %s-%s for %s=%s",
                  CIB_OPTIONS_FIRST, attr_name, attr_name, attr_value);

        configuration = find_entity(xml, XML_CIB_TAG_CONFIGURATION, NULL);
        if (configuration == NULL) {
            configuration = create_xml_node(xml, XML_CIB_TAG_CONFIGURATION);
        }

        crm_config = find_entity(configuration, XML_CIB_TAG_CRMCONFIG, NULL);
        if (crm_config == NULL) {
            crm_config = create_xml_node(configuration, XML_CIB_TAG_CRMCONFIG);
        }

        cluster_property_set = find_entity(crm_config, XML_CIB_TAG_PROPSET, NULL);
        if (cluster_property_set == NULL) {
            cluster_property_set = create_xml_node(crm_config, XML_CIB_TAG_PROPSET);
            crm_xml_add(cluster_property_set, XML_ATTR_ID, CIB_OPTIONS_FIRST);
        }

        xml = create_xml_node(cluster_property_set, XML_CIB_TAG_NVPAIR);

        crm_xml_set_id(xml, "%s-%s", CIB_OPTIONS_FIRST, attr_name);
        crm_xml_add(xml, XML_NVPAIR_ATTR_NAME, attr_name);
        crm_xml_add(xml, XML_NVPAIR_ATTR_VALUE, attr_value);
    }
    freeXpathObject(xpathObj);
}
Пример #5
0
gboolean
process_te_message(xmlNode * msg, xmlNode * xml_data)
{
    const char *from = crm_element_value(msg, F_ORIG);
    const char *sys_to = crm_element_value(msg, F_CRM_SYS_TO);
    const char *sys_from = crm_element_value(msg, F_CRM_SYS_FROM);
    const char *ref = crm_element_value(msg, F_CRM_REFERENCE);
    const char *op = crm_element_value(msg, F_CRM_TASK);
    const char *type = crm_element_value(msg, F_CRM_MSG_TYPE);

    crm_trace("Processing %s (%s) message", op, ref);
    crm_log_xml_trace(msg, "ipc");

    if (op == NULL) {
        /* error */

    } else if (sys_to == NULL || strcasecmp(sys_to, CRM_SYSTEM_TENGINE) != 0) {
        crm_trace("Bad sys-to %s", crm_str(sys_to));
        return FALSE;

    } else if (safe_str_eq(op, CRM_OP_INVOKE_LRM)
               && safe_str_eq(sys_from, CRM_SYSTEM_LRMD)
/* 		  && safe_str_eq(type, XML_ATTR_RESPONSE) */
        ) {
        xmlXPathObject *xpathObj = NULL;

        crm_log_xml_trace(msg, "Processing (N)ACK");
        crm_debug("Processing (N)ACK %s from %s", crm_element_value(msg, F_CRM_REFERENCE), from);

        xpathObj = xpath_search(xml_data, "//" XML_LRM_TAG_RSC_OP);
        if (xpathObj) {
            process_resource_updates(xpathObj);
            xmlXPathFreeObject(xpathObj);
            xpathObj = NULL;

        } else {
            crm_log_xml_err(msg, "Invalid (N)ACK");
            return FALSE;
        }

    } else {
        crm_err("Unknown command: %s::%s from %s", type, op, sys_from);
    }

    crm_trace("finished processing message");

    return TRUE;
}
Пример #6
0
static GListPtr
build_constraint_list(xmlNode *root)
{
    GListPtr retval = NULL;
    xmlNode *cib_constraints = NULL;
    xmlXPathObjectPtr xpathObj = NULL;
    int ndx = 0;

    cib_constraints = get_object_root(XML_CIB_TAG_CONSTRAINTS, root);
    xpathObj = xpath_search(cib_constraints, "//" XML_CONS_TAG_RSC_LOCATION);

    for (ndx = 0; ndx < numXpathResults(xpathObj); ndx++) {
        xmlNode *match = getXpathResult(xpathObj, ndx);
        retval = g_list_insert_sorted(retval, (gpointer) ID(match), compare_id);
    }

    freeXpathObject(xpathObj);
    return retval;
}
Пример #7
0
void
te_update_diff(const char *event, xmlNode * msg)
{
    int rc = -1;
    const char *op = NULL;

    xmlNode *diff = NULL;
    xmlXPathObject *xpathObj = NULL;

    int diff_add_updates = 0;
    int diff_add_epoch = 0;
    int diff_add_admin_epoch = 0;

    int diff_del_updates = 0;
    int diff_del_epoch = 0;
    int diff_del_admin_epoch = 0;

    CRM_CHECK(msg != NULL, return);
    crm_element_value_int(msg, F_CIB_RC, &rc);

    if (transition_graph == NULL) {
        crm_trace("No graph");
        return;

    } else if (rc < pcmk_ok) {
        crm_trace("Filter rc=%d (%s)", rc, pcmk_strerror(rc));
        return;

    } else if (transition_graph->complete == TRUE
               && fsa_state != S_IDLE
               && fsa_state != S_TRANSITION_ENGINE && fsa_state != S_POLICY_ENGINE) {
        crm_trace("Filter state=%s, complete=%d", fsa_state2string(fsa_state),
                  transition_graph->complete);
        return;
    }

    op = crm_element_value(msg, F_CIB_OPERATION);
    diff = get_message_xml(msg, F_CIB_UPDATE_RESULT);

    cib_diff_version_details(diff,
                             &diff_add_admin_epoch, &diff_add_epoch, &diff_add_updates,
                             &diff_del_admin_epoch, &diff_del_epoch, &diff_del_updates);

    crm_debug("Processing diff (%s): %d.%d.%d -> %d.%d.%d (%s)", op,
              diff_del_admin_epoch, diff_del_epoch, diff_del_updates,
              diff_add_admin_epoch, diff_add_epoch, diff_add_updates, fsa_state2string(fsa_state));
    log_cib_diff(LOG_DEBUG_2, diff, op);

    if (cib_config_changed(NULL, NULL, &diff)) {
        abort_transition(INFINITY, tg_restart, "Non-status change", diff);
        goto bail;              /* configuration changed */
    }

    /* Tickets Attributes - Added/Updated */
    xpathObj =
        xpath_search(diff,
                     "//" F_CIB_UPDATE_RESULT "//" XML_TAG_DIFF_ADDED "//" XML_CIB_TAG_TICKETS);
    if (xpathObj && xpathObj->nodesetval->nodeNr > 0) {
        xmlNode *aborted = getXpathResult(xpathObj, 0);

        abort_transition(INFINITY, tg_restart, "Ticket attribute: update", aborted);
        goto bail;

    } else if (xpathObj) {
        xmlXPathFreeObject(xpathObj);
    }

    /* Tickets Attributes - Removed */
    xpathObj =
        xpath_search(diff,
                     "//" F_CIB_UPDATE_RESULT "//" XML_TAG_DIFF_REMOVED "//" XML_CIB_TAG_TICKETS);
    if (xpathObj && xpathObj->nodesetval->nodeNr > 0) {
        xmlNode *aborted = getXpathResult(xpathObj, 0);

        abort_transition(INFINITY, tg_restart, "Ticket attribute: removal", aborted);
        goto bail;

    } else if (xpathObj) {
        xmlXPathFreeObject(xpathObj);
    }

    /* Transient Attributes - Added/Updated */
    xpathObj =
        xpath_search(diff,
                     "//" F_CIB_UPDATE_RESULT "//" XML_TAG_DIFF_ADDED "//"
                     XML_TAG_TRANSIENT_NODEATTRS "//" XML_CIB_TAG_NVPAIR);
    if (xpathObj && xpathObj->nodesetval->nodeNr > 0) {
        int lpc;

        for (lpc = 0; lpc < xpathObj->nodesetval->nodeNr; lpc++) {
            xmlNode *attr = getXpathResult(xpathObj, lpc);
            const char *name = crm_element_value(attr, XML_NVPAIR_ATTR_NAME);
            const char *value = NULL;

            if (safe_str_eq(CRM_OP_PROBED, name)) {
                value = crm_element_value(attr, XML_NVPAIR_ATTR_VALUE);
            }

            if (crm_is_true(value) == FALSE) {
                abort_transition(INFINITY, tg_restart, "Transient attribute: update", attr);
                crm_log_xml_trace(attr, "Abort");
                goto bail;
            }
        }

    } else if (xpathObj) {
        xmlXPathFreeObject(xpathObj);
    }

    /* Transient Attributes - Removed */
    xpathObj =
        xpath_search(diff,
                     "//" F_CIB_UPDATE_RESULT "//" XML_TAG_DIFF_REMOVED "//"
                     XML_TAG_TRANSIENT_NODEATTRS);
    if (xpathObj && xpathObj->nodesetval->nodeNr > 0) {
        xmlNode *aborted = getXpathResult(xpathObj, 0);

        abort_transition(INFINITY, tg_restart, "Transient attribute: removal", aborted);
        goto bail;

    } else if (xpathObj) {
        xmlXPathFreeObject(xpathObj);
    }

    /*
     * Check for and fast-track the processing of LRM refreshes
     * In large clusters this can result in _huge_ speedups
     *
     * Unfortunately we can only do so when there are no pending actions
     * Otherwise we could miss updates we're waiting for and stall 
     *
     */
    xpathObj = NULL;
    if (transition_graph->pending == 0) {
        xpathObj =
            xpath_search(diff,
                         "//" F_CIB_UPDATE_RESULT "//" XML_TAG_DIFF_ADDED "//"
                         XML_LRM_TAG_RESOURCE);
    }

    if (xpathObj) {
        int updates = xpathObj->nodesetval->nodeNr;

        if (updates > 1) {
            /* Updates by, or in response to, TE actions will never contain updates
             * for more than one resource at a time
             */
            crm_debug("Detected LRM refresh - %d resources updated: Skipping all resource events",
                      updates);
            crm_log_xml_trace(diff, "lrm-refresh");
            abort_transition(INFINITY, tg_restart, "LRM Refresh", NULL);
            goto bail;
        }
        xmlXPathFreeObject(xpathObj);
    }

    /* Process operation updates */
    xpathObj =
        xpath_search(diff,
                     "//" F_CIB_UPDATE_RESULT "//" XML_TAG_DIFF_ADDED "//" XML_LRM_TAG_RSC_OP);
    if (xpathObj) {
        process_resource_updates(xpathObj);
        xmlXPathFreeObject(xpathObj);
    }

    /* Detect deleted (as opposed to replaced or added) actions - eg. crm_resource -C */
    xpathObj = xpath_search(diff, "//" XML_TAG_DIFF_REMOVED "//" XML_LRM_TAG_RSC_OP);
    if (xpathObj) {
        int lpc = 0, max = xpathObj->nodesetval->nodeNr;

        for (lpc = 0; lpc < max; lpc++) {
            int max = 0;
            const char *op_id = NULL;
            char *rsc_op_xpath = NULL;
            xmlXPathObject *op_match = NULL;
            xmlNode *match = getXpathResult(xpathObj, lpc);

            CRM_CHECK(match != NULL, continue);

            op_id = ID(match);

            max = strlen(rsc_op_template) + strlen(op_id) + 1;
            rsc_op_xpath = calloc(1, max);
            snprintf(rsc_op_xpath, max, rsc_op_template, op_id);

            op_match = xpath_search(diff, rsc_op_xpath);
            if (op_match == NULL || op_match->nodesetval->nodeNr == 0) {
                /* Prevent false positives by matching cancelations too */
                const char *node = get_node_id(match);
                crm_action_t *cancelled = get_cancel_action(op_id, node);

                if (cancelled == NULL) {
                    crm_debug("No match for deleted action %s (%s on %s)", rsc_op_xpath, op_id,
                              node);
                    abort_transition(INFINITY, tg_restart, "Resource op removal", match);
                    if (op_match) {
                        xmlXPathFreeObject(op_match);
                    }
                    free(rsc_op_xpath);
                    goto bail;

                } else {
                    crm_debug("Deleted lrm_rsc_op %s on %s was for graph event %d",
                              op_id, node, cancelled->id);
                }
            }

            if (op_match) {
                xmlXPathFreeObject(op_match);
            }
            free(rsc_op_xpath);
        }
    }

  bail:
    if (xpathObj) {
        xmlXPathFreeObject(xpathObj);
    }
}
Пример #8
0
int
cib_process_xpath(const char *op, int options, const char *section, xmlNode * req, xmlNode * input,
                  xmlNode * existing_cib, xmlNode ** result_cib, xmlNode ** answer)
{
    int lpc = 0;
    int max = 0;
    int rc = pcmk_ok;
    gboolean is_query = safe_str_eq(op, CIB_OP_QUERY);

    xmlXPathObjectPtr xpathObj = NULL;

    crm_trace("Processing \"%s\" event", op);

    if (is_query) {
        xpathObj = xpath_search(existing_cib, section);
    } else {
        xpathObj = xpath_search(*result_cib, section);
    }

    max = numXpathResults(xpathObj);

    if (max < 1 && safe_str_eq(op, CIB_OP_DELETE)) {
        crm_debug("%s was already removed", section);

    } else if (max < 1) {
        crm_debug("%s: %s does not exist", op, section);
        rc = -ENXIO;

    } else if (is_query) {
        if (max > 1) {
            *answer = create_xml_node(NULL, "xpath-query");
        }
    }

    if (safe_str_eq(op, CIB_OP_DELETE) && (options & cib_multiple)) {
        dedupXpathResults(xpathObj);
    }

    for (lpc = 0; lpc < max; lpc++) {
        xmlChar *path = NULL;
        xmlNode *match = getXpathResult(xpathObj, lpc);

        if (match == NULL) {
            continue;
        }

        path = xmlGetNodePath(match);
        crm_debug("Processing %s op for %s (%s)", op, section, path);
        free(path);

        if (safe_str_eq(op, CIB_OP_DELETE)) {
            if (match == *result_cib) {
                /* Attempting to delete the whole "/cib" */
                crm_warn("Cannot perform %s for %s: The xpath is addressing the whole /cib", op, section);
                rc = -EINVAL;
                break;
            }

            free_xml(match);
            if ((options & cib_multiple) == 0) {
                break;
            }

        } else if (safe_str_eq(op, CIB_OP_MODIFY)) {
            if (update_xml_child(match, input) == FALSE) {
                rc = -ENXIO;
            } else if ((options & cib_multiple) == 0) {
                break;
            }

        } else if (safe_str_eq(op, CIB_OP_CREATE)) {
            add_node_copy(match, input);
            break;

        } else if (safe_str_eq(op, CIB_OP_QUERY)) {

            if (options & cib_no_children) {
                const char *tag = TYPE(match);
                xmlNode *shallow = create_xml_node(*answer, tag);

                copy_in_properties(shallow, match);

                if (*answer == NULL) {
                    *answer = shallow;
                }

            } else if (options & cib_xpath_address) {

                int path_len = 0;
                char *path = NULL;
                xmlNode *parent = match;

                while (parent && parent->type == XML_ELEMENT_NODE) {
                    int extra = 1;
                    char *new_path = NULL;
                    const char *id = crm_element_value(parent, XML_ATTR_ID);

                    extra += strlen((const char *)parent->name);
                    if (id) {
                        extra += 8;     /* [@id=""] */
                        extra += strlen(id);
                    }

                    path_len += extra;
                    new_path = malloc(path_len + 1);
                    if(new_path == NULL) {
                        break;

                    } else if (id) {
                        snprintf(new_path, path_len + 1, "/%s[@id='%s']%s", parent->name, id,
                                 path ? path : "");
                    } else {
                        snprintf(new_path, path_len + 1, "/%s%s", parent->name, path ? path : "");
                    }
                    free(path);
                    path = new_path;
                    parent = parent->parent;
                }
                crm_trace("Got: %s\n", path);

                if (*answer == NULL) {
                    *answer = create_xml_node(NULL, "xpath-query");
                }
                parent = create_xml_node(*answer, "xpath-query-path");
                crm_xml_add(parent, XML_ATTR_ID, path);
                free(path);

            } else if (*answer) {
                add_node_copy(*answer, match);

            } else {
                *answer = match;
            }

        } else if (safe_str_eq(op, CIB_OP_REPLACE)) {
            xmlNode *parent = match->parent;

            free_xml(match);
            if (input != NULL) {
                add_node_copy(parent, input);
            }

            if ((options & cib_multiple) == 0) {
                break;
            }
        }
    }

    freeXpathObject(xpathObj);
    return rc;
}
Пример #9
0
gboolean
cib_config_changed(xmlNode * last, xmlNode * next, xmlNode ** diff)
{
    int lpc = 0, max = 0;
    gboolean config_changes = FALSE;
    xmlXPathObject *xpathObj = NULL;

    CRM_ASSERT(diff != NULL);

    if (*diff == NULL && last != NULL && next != NULL) {
        *diff = diff_xml_object(last, next, FALSE);
    }

    if (*diff == NULL) {
        goto done;
    }

    xpathObj = xpath_search(*diff, "//" XML_CIB_TAG_CONFIGURATION);
    if (numXpathResults(xpathObj) > 0) {
        config_changes = TRUE;
        goto done;
    }
    freeXpathObject(xpathObj);

    /*
     * Do not check XML_TAG_DIFF_ADDED "//" XML_TAG_CIB
     * This always contains every field and would produce a false positive
     * every time if the checked value existed
     */
    xpathObj = xpath_search(*diff, "//" XML_TAG_DIFF_REMOVED "//" XML_TAG_CIB);
    max = numXpathResults(xpathObj);

    for (lpc = 0; lpc < max; lpc++) {
        xmlNode *top = getXpathResult(xpathObj, lpc);

        if (crm_element_value(top, XML_ATTR_GENERATION) != NULL) {
            config_changes = TRUE;
            goto done;
        }
        if (crm_element_value(top, XML_ATTR_GENERATION_ADMIN) != NULL) {
            config_changes = TRUE;
            goto done;
        }

        if (crm_element_value(top, XML_ATTR_VALIDATION) != NULL) {
            config_changes = TRUE;
            goto done;
        }
        if (crm_element_value(top, XML_ATTR_CRM_VERSION) != NULL) {
            config_changes = TRUE;
            goto done;
        }
        if (crm_element_value(top, "remote-clear-port") != NULL) {
            config_changes = TRUE;
            goto done;
        }
        if (crm_element_value(top, "remote-tls-port") != NULL) {
            config_changes = TRUE;
            goto done;
        }
    }

  done:
    freeXpathObject(xpathObj);
    return config_changes;
}
Пример #10
0
int
cib_process_modify(const char *op, int options, const char *section, xmlNode * req, xmlNode * input,
                   xmlNode * existing_cib, xmlNode ** result_cib, xmlNode ** answer)
{
    xmlNode *obj_root = NULL;

    crm_trace("Processing \"%s\" event", op);

    if (options & cib_xpath) {
        return cib_process_xpath(op, options, section, req, input,
                                 existing_cib, result_cib, answer);
    }

    if (input == NULL) {
        crm_err("Cannot perform modification with no data");
        return -EINVAL;
    }

    obj_root = get_object_root(section, *result_cib);
    if (obj_root == NULL) {
        xmlNode *tmp_section = NULL;
        const char *path = get_object_parent(section);

        if (path == NULL) {
            return -EINVAL;
        }

        tmp_section = create_xml_node(NULL, section);
        cib_process_xpath(CIB_OP_CREATE, 0, path, NULL, tmp_section, NULL, result_cib, answer);
        free_xml(tmp_section);

        obj_root = get_object_root(section, *result_cib);
    }

    CRM_CHECK(obj_root != NULL, return -EINVAL);

    if (update_xml_child(obj_root, input) == FALSE) {
        if (options & cib_can_create) {
            add_node_copy(obj_root, input);
        } else {
            return -ENXIO;
        }
    }

    if(options & cib_mixed_update) {
        int max = 0, lpc;
        xmlXPathObjectPtr xpathObj = xpath_search(*result_cib, "//@__delete__");

        if (xpathObj) {
            max = numXpathResults(xpathObj);
            crm_log_xml_trace(*result_cib, "Mixed result");
        }

        for (lpc = 0; lpc < max; lpc++) {
            xmlNode *match = getXpathResult(xpathObj, lpc);
            xmlChar *match_path = xmlGetNodePath(match);

            crm_debug("Destroying %s", match_path);
            free(match_path);
            free_xml(match);
        }

        freeXpathObject(xpathObj);
    }
    return pcmk_ok;
}
Пример #11
0
int
cli_resource_clear_all_expired(xmlNode *root, cib_t *cib_conn, const char *rsc, const char *node, bool scope_master)
{
    xmlXPathObject *xpathObj = NULL;
    xmlNode *cib_constraints = NULL;
    crm_time_t *now = crm_time_new(NULL);
    int i;
    int rc = pcmk_ok;

    cib_constraints = get_object_root(XML_CIB_TAG_CONSTRAINTS, root);
    xpathObj = xpath_search(cib_constraints, "//" XML_CONS_TAG_RSC_LOCATION);

    for (i = 0; i < numXpathResults(xpathObj); i++) {
        xmlNode *constraint_node = getXpathResult(xpathObj, i);
        xmlNode *date_expr_node = NULL;
        crm_time_t *end = NULL;
        char *xpath_string = NULL;

        xpath_string = build_clear_xpath_string(constraint_node, rsc, node, scope_master);
        if (xpath_string == NULL) {
            continue;
        }

        date_expr_node = get_xpath_object(xpath_string, constraint_node, LOG_DEBUG);
        if (date_expr_node == NULL) {
            free(xpath_string);
            continue;
        }

        /* And then finally, see if the date expression is expired.  If so,
         * clear the constraint.
         */
        end = crm_time_new(crm_element_value(date_expr_node, "end"));

        if (crm_time_compare(now, end) == 1) {
            xmlNode *fragment = NULL;
            xmlNode *location = NULL;

            fragment = create_xml_node(NULL, XML_CIB_TAG_CONSTRAINTS);
            location = create_xml_node(fragment, XML_CONS_TAG_RSC_LOCATION);
            crm_xml_set_id(location, "%s", ID(constraint_node));
            crm_log_xml_info(fragment, "Delete");

            rc = cib_conn->cmds->remove(cib_conn, XML_CIB_TAG_CONSTRAINTS,
                                        fragment, cib_options);
            if (rc != pcmk_ok) {
                free(xpath_string);
                goto bail;
            }

            free_xml(fragment);
        }

        crm_time_free(end);
        free(xpath_string);
    }

    rc = pcmk_ok;

bail:
    freeXpathObject(xpathObj);
    crm_time_free(now);
    return rc;
}
Пример #12
0
static gboolean
block_failure(node_t *node, resource_t *rsc, xmlNode *xml_op,
              pe_working_set_t *data_set)
{
    char *xml_name = clone_strip(rsc->id);
    char *xpath = crm_strdup_printf("//primitive[@id='%s']//op[@on-fail='block']",
                                    xml_name);
    xmlXPathObject *xpathObj = xpath_search(rsc->xml, xpath);
    gboolean should_block = FALSE;

    free(xpath);

#if 0
    /* A good idea? */
    if (rsc->container == NULL && is_not_set(data_set->flags, pe_flag_stonith_enabled)) {
        /* In this case, stop on-fail defaults to block in unpack_operation() */
        return TRUE;
    }
#endif

    if (xpathObj) {
        int max = numXpathResults(xpathObj);
        int lpc = 0;

        for (lpc = 0; lpc < max; lpc++) {
            xmlNode *pref = getXpathResult(xpathObj, lpc);

            if (xml_op) {
                should_block = is_matched_failure(xml_name, pref, xml_op);
                if (should_block) {
                    break;
                }

            } else {
                const char *conf_op_name = NULL;
                int conf_op_interval = 0;
                char *lrm_op_xpath = NULL;
                xmlXPathObject *lrm_op_xpathObj = NULL;

                conf_op_name = crm_element_value(pref, "name");
                conf_op_interval = crm_get_msec(crm_element_value(pref, "interval"));

                lrm_op_xpath = crm_strdup_printf("//node_state[@uname='%s']"
                                               "//lrm_resource[@id='%s']"
                                               "/lrm_rsc_op[@operation='%s'][@interval='%d']",
                                               node->details->uname, xml_name,
                                               conf_op_name, conf_op_interval);
                lrm_op_xpathObj = xpath_search(data_set->input, lrm_op_xpath);

                free(lrm_op_xpath);

                if (lrm_op_xpathObj) {
                    int max2 = numXpathResults(lrm_op_xpathObj);
                    int lpc2 = 0;

                    for (lpc2 = 0; lpc2 < max2; lpc2++) {
                        xmlNode *lrm_op_xml = getXpathResult(lrm_op_xpathObj,
                                                             lpc2);

                        should_block = is_matched_failure(xml_name, pref,
                                                          lrm_op_xml);
                        if (should_block) {
                            break;
                        }
                    }
                }
                freeXpathObject(lrm_op_xpathObj);

                if (should_block) {
                    break;
                }
            }
        }
    }

    free(xml_name);
    freeXpathObject(xpathObj);

    return should_block;
}
Пример #13
0
void
te_update_diff(const char *event, xmlNode *msg)
{
	int rc = -1;
	const char *op = NULL;

	xmlNode *diff = NULL;
	xmlNode *cib_top = NULL;
	xmlXPathObject *xpathObj = NULL;

	int diff_add_updates     = 0;
	int diff_add_epoch       = 0;
	int diff_add_admin_epoch = 0;

	int diff_del_updates     = 0;
	int diff_del_epoch       = 0;
	int diff_del_admin_epoch = 0;
	
	CRM_CHECK(msg != NULL, return);
	crm_element_value_int(msg, F_CIB_RC, &rc);	

	if(transition_graph == NULL) {
	    crm_debug_3("No graph");
	    return;

	} else if(rc < cib_ok) {
	    crm_debug_3("Filter rc=%d (%s)", rc, cib_error2string(rc));
	    return;

	} else if(transition_graph->complete == TRUE
		  && fsa_state != S_IDLE
		  && fsa_state != S_TRANSITION_ENGINE
		  && fsa_state != S_POLICY_ENGINE) {
	    crm_debug_2("Filter state=%s, complete=%d", fsa_state2string(fsa_state), transition_graph->complete);
	    return;
	} 	

	op = crm_element_value(msg, F_CIB_OPERATION);
	diff = get_message_xml(msg, F_CIB_UPDATE_RESULT);

	cib_diff_version_details(
		diff,
		&diff_add_admin_epoch, &diff_add_epoch, &diff_add_updates, 
		&diff_del_admin_epoch, &diff_del_epoch, &diff_del_updates);
	
	crm_debug("Processing diff (%s): %d.%d.%d -> %d.%d.%d (%s)", op,
		  diff_del_admin_epoch,diff_del_epoch,diff_del_updates,
		  diff_add_admin_epoch,diff_add_epoch,diff_add_updates,
		  fsa_state2string(fsa_state));
	log_cib_diff(LOG_DEBUG_2, diff, op);

	/* Process anything that was added */
	cib_top = get_xpath_object("//"F_CIB_UPDATE_RESULT"//"XML_TAG_DIFF_ADDED"//"XML_TAG_CIB, diff, LOG_ERR);
	if(need_abort(cib_top)) {
	    goto bail; /* configuration changed */
	}

	/* Process anything that was removed */
	cib_top = get_xpath_object("//"F_CIB_UPDATE_RESULT"//"XML_TAG_DIFF_REMOVED"//"XML_TAG_CIB, diff, LOG_ERR);
	if(need_abort(cib_top)) {
	    goto bail; /* configuration changed */
	}

	/* Transient Attributes - Added/Updated */
	xpathObj = xpath_search(diff,"//"F_CIB_UPDATE_RESULT"//"XML_TAG_DIFF_ADDED"//"XML_TAG_TRANSIENT_NODEATTRS"//"XML_CIB_TAG_NVPAIR);
	if(xpathObj && xpathObj->nodesetval->nodeNr > 0) {
	    int lpc;
	    for(lpc = 0; lpc < xpathObj->nodesetval->nodeNr; lpc++) {
		xmlNode *attr = getXpathResult(xpathObj, lpc);
		const char *name = crm_element_value(attr, XML_NVPAIR_ATTR_NAME);
		const char *value = NULL;
		
		if(safe_str_eq(CRM_OP_PROBED, name)) {
		    value = crm_element_value(attr, XML_NVPAIR_ATTR_VALUE);
		}

		if(crm_is_true(value) == FALSE) {
		    abort_transition(INFINITY, tg_restart, "Transient attribute: update", attr);
		    crm_log_xml_debug_2(attr, "Abort");
		    goto bail;
		}
	    }

	} else if(xpathObj) {
	    xmlXPathFreeObject(xpathObj);
	}
	
	/* Transient Attributes - Removed */
	xpathObj = xpath_search(diff,"//"F_CIB_UPDATE_RESULT"//"XML_TAG_DIFF_REMOVED"//"XML_TAG_TRANSIENT_NODEATTRS);
	if(xpathObj && xpathObj->nodesetval->nodeNr > 0) {
	    xmlNode *aborted = getXpathResult(xpathObj, 0);
	    abort_transition(INFINITY, tg_restart, "Transient attribute: removal", aborted);
	    goto bail;

	} else if(xpathObj) {
	    xmlXPathFreeObject(xpathObj);
	}

	/* Check for node state updates... possibly from a shutdown we requested */
	xpathObj = xpath_search(diff, "//"F_CIB_UPDATE_RESULT"//"XML_TAG_DIFF_ADDED"//"XML_CIB_TAG_STATE);
	if(xpathObj) {
	    int lpc = 0, max = xpathObj->nodesetval->nodeNr;
	    for(lpc = 0; lpc < max; lpc++) {
		xmlNode *node = getXpathResult(xpathObj, lpc);
		const char *event_node = crm_element_value(node, XML_ATTR_ID);
		const char *ccm_state  = crm_element_value(node, XML_CIB_ATTR_INCCM);
		const char *ha_state   = crm_element_value(node, XML_CIB_ATTR_HASTATE);
		const char *shutdown_s = crm_element_value(node, XML_CIB_ATTR_SHUTDOWN);
		const char *crmd_state = crm_element_value(node, XML_CIB_ATTR_CRMDSTATE);

		if(safe_str_eq(ccm_state, XML_BOOLEAN_FALSE)
		   || safe_str_eq(ha_state, DEADSTATUS)
		   || safe_str_eq(crmd_state, CRMD_JOINSTATE_DOWN)) {
		    crm_action_t *shutdown = match_down_event(0, event_node, NULL);
		    
		    if(shutdown != NULL) {
			const char *task = crm_element_value(shutdown->xml, XML_LRM_ATTR_TASK);
			if(safe_str_neq(task, CRM_OP_FENCE)) {
			    /* Wait for stonithd to tell us it is complete via tengine_stonith_callback() */
			    update_graph(transition_graph, shutdown);
			    trigger_graph();
			}
			
		    } else {
			crm_info("Stonith/shutdown of %s not matched", event_node);
			abort_transition(INFINITY, tg_restart, "Node failure", node);
		    }			
		    fail_incompletable_actions(transition_graph, event_node);
		}
	 
		if(shutdown_s) {
		    int shutdown = crm_parse_int(shutdown_s, NULL);
		    if(shutdown > 0) {
			crm_info("Aborting on "XML_CIB_ATTR_SHUTDOWN" attribute for %s", event_node);
			abort_transition(INFINITY, tg_restart, "Shutdown request", node);
		    }
		}
	    }
	    xmlXPathFreeObject(xpathObj);
	}

	/*
	 * Check for and fast-track the processing of LRM refreshes
	 * In large clusters this can result in _huge_ speedups
	 *
	 * Unfortunately we can only do so when there are no pending actions
	 * Otherwise we could miss updates we're waiting for and stall 
	 *
	 */
	xpathObj = NULL;
	if(transition_graph->pending == 0) {
	    xpathObj = xpath_search(diff, "//"F_CIB_UPDATE_RESULT"//"XML_TAG_DIFF_ADDED"//"XML_LRM_TAG_RESOURCE);
	}
	
	if(xpathObj) {
	    int updates = xpathObj->nodesetval->nodeNr;
	    if(updates > 1) {
		/* Updates by, or in response to, TE actions will never contain updates
		 * for more than one resource at a time
		 */
		crm_info("Detected LRM refresh - %d resources updated: Skipping all resource events", updates);
		abort_transition(INFINITY, tg_restart, "LRM Refresh", diff);
		goto bail;
	    }
	    xmlXPathFreeObject(xpathObj);
	}

	/* Process operation updates */
	xpathObj = xpath_search(diff, "//"F_CIB_UPDATE_RESULT"//"XML_TAG_DIFF_ADDED"//"XML_LRM_TAG_RSC_OP);
	if(xpathObj) {
	    process_resource_updates(xpathObj);
	    xmlXPathFreeObject(xpathObj);
	}
	
	/* Detect deleted (as opposed to replaced or added) actions - eg. crm_resource -C */ 
	xpathObj = xpath_search(diff, "//"XML_TAG_DIFF_REMOVED"//"XML_LRM_TAG_RSC_OP);
	if(xpathObj) {
	    int lpc = 0, max = xpathObj->nodesetval->nodeNr;
	    
	    for(lpc = 0; lpc < max; lpc++) {
		int max = 0;
		const char *op_id = NULL;
		char *rsc_op_xpath = NULL;
		xmlXPathObject *op_match = NULL;
		xmlNode *match = getXpathResult(xpathObj, lpc);
		CRM_CHECK(match != NULL, continue);

		op_id = ID(match);

		max = strlen(rsc_op_template) + strlen(op_id) + 1;
		crm_malloc0(rsc_op_xpath, max);
		snprintf(rsc_op_xpath, max, rsc_op_template, op_id);
		
		op_match = xpath_search(diff, rsc_op_xpath);
		if(op_match == NULL || op_match->nodesetval->nodeNr == 0) {
		    /* Prevent false positives by matching cancelations too */
		    const char *node = get_node_id(match);
		    crm_action_t *cancelled = get_cancel_action(op_id, node);

		    if(cancelled == NULL) {
			crm_debug("No match for deleted action %s (%s on %s)", rsc_op_xpath, op_id, node);
			abort_transition(INFINITY, tg_restart, "Resource op removal", match);
			if(op_match) {
			    xmlXPathFreeObject(op_match);
			}
			crm_free(rsc_op_xpath);
			goto bail;

		    } else {
			crm_debug("Deleted lrm_rsc_op %s on %s was for graph event %d",
				  op_id, node, cancelled->id);
		    }
		}

		if(op_match) {
		    xmlXPathFreeObject(op_match);
		}
		crm_free(rsc_op_xpath);
	    }
	}

  bail:
	if(xpathObj) {
	    xmlXPathFreeObject(xpathObj);
	}
}
Пример #14
0
static void
te_update_diff_v1(const char *event, xmlNode *diff)
{
    int lpc, max;
    xmlXPathObject *xpathObj = NULL;

    CRM_CHECK(diff != NULL, return);

    xml_log_patchset(LOG_TRACE, __FUNCTION__, diff);
    if (cib_config_changed(NULL, NULL, &diff)) {
        abort_transition(INFINITY, tg_restart, "Non-status change", diff);
        goto bail;              /* configuration changed */
    }

    /* Tickets Attributes - Added/Updated */
    xpathObj =
        xpath_search(diff,
                     "//" F_CIB_UPDATE_RESULT "//" XML_TAG_DIFF_ADDED "//" XML_CIB_TAG_TICKETS);
    if (numXpathResults(xpathObj) > 0) {
        xmlNode *aborted = getXpathResult(xpathObj, 0);

        abort_transition(INFINITY, tg_restart, "Ticket attribute: update", aborted);
        goto bail;

    }
    freeXpathObject(xpathObj);

    /* Tickets Attributes - Removed */
    xpathObj =
        xpath_search(diff,
                     "//" F_CIB_UPDATE_RESULT "//" XML_TAG_DIFF_REMOVED "//" XML_CIB_TAG_TICKETS);
    if (numXpathResults(xpathObj) > 0) {
        xmlNode *aborted = getXpathResult(xpathObj, 0);

        abort_transition(INFINITY, tg_restart, "Ticket attribute: removal", aborted);
        goto bail;
    }
    freeXpathObject(xpathObj);

    /* Transient Attributes - Added/Updated */
    xpathObj =
        xpath_search(diff,
                     "//" F_CIB_UPDATE_RESULT "//" XML_TAG_DIFF_ADDED "//"
                     XML_TAG_TRANSIENT_NODEATTRS "//" XML_CIB_TAG_NVPAIR);
    max = numXpathResults(xpathObj);

    for (lpc = 0; lpc < max; lpc++) {
        xmlNode *attr = getXpathResult(xpathObj, lpc);
        const char *name = crm_element_value(attr, XML_NVPAIR_ATTR_NAME);
        const char *value = NULL;

        if (safe_str_eq(CRM_OP_PROBED, name)) {
            value = crm_element_value(attr, XML_NVPAIR_ATTR_VALUE);
        }

        if (crm_is_true(value) == FALSE) {
            abort_transition(INFINITY, tg_restart, "Transient attribute: update", attr);
            crm_log_xml_trace(attr, "Abort");
            goto bail;
        }
    }

    freeXpathObject(xpathObj);

    /* Transient Attributes - Removed */
    xpathObj =
        xpath_search(diff,
                     "//" F_CIB_UPDATE_RESULT "//" XML_TAG_DIFF_REMOVED "//"
                     XML_TAG_TRANSIENT_NODEATTRS);
    if (numXpathResults(xpathObj) > 0) {
        xmlNode *aborted = getXpathResult(xpathObj, 0);

        abort_transition(INFINITY, tg_restart, "Transient attribute: removal", aborted);
        goto bail;

    }
    freeXpathObject(xpathObj);

    /*
     * Updates by, or in response to, TE actions will never contain updates
     * for more than one resource at a time, so such updates indicate an
     * LRM refresh.
     *
     * In that case, start a new transition rather than check each result
     * individually, which can result in _huge_ speedups in large clusters.
     *
     * Unfortunately, we can only do so when there are no pending actions.
     * Otherwise, we could mistakenly throw away those results here, and
     * the cluster will stall waiting for them and time out the operation.
     */
    if (transition_graph->pending == 0) {
        xpathObj = xpath_search(diff,
                                "//" F_CIB_UPDATE_RESULT
                                "//" XML_TAG_DIFF_ADDED
                                "//" XML_LRM_TAG_RESOURCE);
        max = numXpathResults(xpathObj);
        if (max > 1) {
            crm_debug("Ignoring resource operation updates due to history refresh of %d resources",
                      max);
            crm_log_xml_trace(diff, "lrm-refresh");
            abort_transition(INFINITY, tg_restart, "History refresh", NULL);
            goto bail;
        }
        freeXpathObject(xpathObj);
    }

    /* Process operation updates */
    xpathObj =
        xpath_search(diff,
                     "//" F_CIB_UPDATE_RESULT "//" XML_TAG_DIFF_ADDED "//" XML_LRM_TAG_RSC_OP);
    max = numXpathResults(xpathObj);
    if (max > 0) {
        int lpc = 0;

        for (lpc = 0; lpc < max; lpc++) {
            xmlNode *rsc_op = getXpathResult(xpathObj, lpc);
            const char *node = get_node_id(rsc_op);

            process_graph_event(rsc_op, node);
        }
    }
    freeXpathObject(xpathObj);

    /* Detect deleted (as opposed to replaced or added) actions - eg. crm_resource -C */
    xpathObj = xpath_search(diff, "//" XML_TAG_DIFF_REMOVED "//" XML_LRM_TAG_RSC_OP);
    max = numXpathResults(xpathObj);
    for (lpc = 0; lpc < max; lpc++) {
        int path_max = 0;
        const char *op_id = NULL;
        char *rsc_op_xpath = NULL;
        xmlXPathObject *op_match = NULL;
        xmlNode *match = getXpathResult(xpathObj, lpc);

        CRM_LOG_ASSERT(match != NULL);
        if(match == NULL) { continue; };

        op_id = ID(match);

        path_max = strlen(RSC_OP_TEMPLATE) + strlen(op_id) + 1;
        rsc_op_xpath = calloc(1, path_max);
        snprintf(rsc_op_xpath, path_max, RSC_OP_TEMPLATE, op_id);

        op_match = xpath_search(diff, rsc_op_xpath);
        if (numXpathResults(op_match) == 0) {
            /* Prevent false positives by matching cancelations too */
            const char *node = get_node_id(match);
            crm_action_t *cancelled = get_cancel_action(op_id, node);

            if (cancelled == NULL) {
                crm_debug("No match for deleted action %s (%s on %s)", rsc_op_xpath, op_id,
                          node);
                abort_transition(INFINITY, tg_restart, "Resource op removal", match);
                freeXpathObject(op_match);
                free(rsc_op_xpath);
                goto bail;

            } else {
                crm_debug("Deleted lrm_rsc_op %s on %s was for graph event %d",
                          op_id, node, cancelled->id);
            }
        }

        freeXpathObject(op_match);
        free(rsc_op_xpath);
    }

  bail:
    freeXpathObject(xpathObj);
}
Пример #15
0
static void
te_legacy_update_diff(const char *event, xmlNode * diff)
{
    int lpc, max;
    xmlXPathObject *xpathObj = NULL;

    CRM_CHECK(diff != NULL, return);

    xml_log_patchset(LOG_TRACE, __FUNCTION__, diff);
    if (cib_config_changed(NULL, NULL, &diff)) {
        abort_transition(INFINITY, tg_restart, "Non-status change", diff);
        goto bail;              /* configuration changed */
    }

    /* Tickets Attributes - Added/Updated */
    xpathObj =
        xpath_search(diff,
                     "//" F_CIB_UPDATE_RESULT "//" XML_TAG_DIFF_ADDED "//" XML_CIB_TAG_TICKETS);
    if (numXpathResults(xpathObj) > 0) {
        xmlNode *aborted = getXpathResult(xpathObj, 0);

        abort_transition(INFINITY, tg_restart, "Ticket attribute: update", aborted);
        goto bail;

    }
    freeXpathObject(xpathObj);

    /* Tickets Attributes - Removed */
    xpathObj =
        xpath_search(diff,
                     "//" F_CIB_UPDATE_RESULT "//" XML_TAG_DIFF_REMOVED "//" XML_CIB_TAG_TICKETS);
    if (numXpathResults(xpathObj) > 0) {
        xmlNode *aborted = getXpathResult(xpathObj, 0);

        abort_transition(INFINITY, tg_restart, "Ticket attribute: removal", aborted);
        goto bail;
    }
    freeXpathObject(xpathObj);

    /* Transient Attributes - Added/Updated */
    xpathObj =
        xpath_search(diff,
                     "//" F_CIB_UPDATE_RESULT "//" XML_TAG_DIFF_ADDED "//"
                     XML_TAG_TRANSIENT_NODEATTRS "//" XML_CIB_TAG_NVPAIR);
    max = numXpathResults(xpathObj);

    for (lpc = 0; lpc < max; lpc++) {
        xmlNode *attr = getXpathResult(xpathObj, lpc);
        const char *name = crm_element_value(attr, XML_NVPAIR_ATTR_NAME);
        const char *value = NULL;

        if (safe_str_eq(CRM_OP_PROBED, name)) {
            value = crm_element_value(attr, XML_NVPAIR_ATTR_VALUE);
        }

        if (crm_is_true(value) == FALSE) {
            abort_transition(INFINITY, tg_restart, "Transient attribute: update", attr);
            crm_log_xml_trace(attr, "Abort");
            goto bail;
        }
    }

    freeXpathObject(xpathObj);

    /* Transient Attributes - Removed */
    xpathObj =
        xpath_search(diff,
                     "//" F_CIB_UPDATE_RESULT "//" XML_TAG_DIFF_REMOVED "//"
                     XML_TAG_TRANSIENT_NODEATTRS);
    if (numXpathResults(xpathObj) > 0) {
        xmlNode *aborted = getXpathResult(xpathObj, 0);

        abort_transition(INFINITY, tg_restart, "Transient attribute: removal", aborted);
        goto bail;

    }
    freeXpathObject(xpathObj);

    /*
     * Check for and fast-track the processing of LRM refreshes
     * In large clusters this can result in _huge_ speedups
     *
     * Unfortunately we can only do so when there are no pending actions
     * Otherwise we could miss updates we're waiting for and stall
     *
     */
    xpathObj = NULL;
    if (transition_graph->pending == 0) {
        xpathObj =
            xpath_search(diff,
                         "//" F_CIB_UPDATE_RESULT "//" XML_TAG_DIFF_ADDED "//"
                         XML_LRM_TAG_RESOURCE);
    }

    max = numXpathResults(xpathObj);
    if (max > 1) {
        /* Updates by, or in response to, TE actions will never contain updates
         * for more than one resource at a time
         */
        crm_debug("Detected LRM refresh - %d resources updated: Skipping all resource events", max);
        crm_log_xml_trace(diff, "lrm-refresh");
        abort_transition(INFINITY, tg_restart, "LRM Refresh", NULL);
        goto bail;
    }
    freeXpathObject(xpathObj);

    /* Process operation updates */
    xpathObj =
        xpath_search(diff,
                     "//" F_CIB_UPDATE_RESULT "//" XML_TAG_DIFF_ADDED "//" XML_LRM_TAG_RSC_OP);
    if (numXpathResults(xpathObj)) {
/*
    <status>
       <node_state id="node1" state=CRMD_JOINSTATE_MEMBER exp_state="active">
          <lrm>
             <lrm_resources>
        	<rsc_state id="" rsc_id="rsc4" node_id="node1" rsc_state="stopped"/>
*/
        int lpc = 0, max = numXpathResults(xpathObj);

        for (lpc = 0; lpc < max; lpc++) {
            xmlNode *rsc_op = getXpathResult(xpathObj, lpc);
            const char *node = get_node_id(rsc_op);

            process_graph_event(rsc_op, node);
        }
    }
    freeXpathObject(xpathObj);

    /* Detect deleted (as opposed to replaced or added) actions - eg. crm_resource -C */
    xpathObj = xpath_search(diff, "//" XML_TAG_DIFF_REMOVED "//" XML_LRM_TAG_RSC_OP);
    max = numXpathResults(xpathObj);
    for (lpc = 0; lpc < max; lpc++) {
        int path_max = 0;
        const char *op_id = NULL;
        char *rsc_op_xpath = NULL;
        xmlXPathObject *op_match = NULL;
        xmlNode *match = getXpathResult(xpathObj, lpc);

        CRM_LOG_ASSERT(match != NULL);
        if(match == NULL) { continue; };

        op_id = ID(match);

        path_max = strlen(rsc_op_template) + strlen(op_id) + 1;
        rsc_op_xpath = calloc(1, path_max);
        snprintf(rsc_op_xpath, path_max, rsc_op_template, op_id);

        op_match = xpath_search(diff, rsc_op_xpath);
        if (numXpathResults(op_match) == 0) {
            /* Prevent false positives by matching cancelations too */
            const char *node = get_node_id(match);
            crm_action_t *cancelled = get_cancel_action(op_id, node);

            if (cancelled == NULL) {
                crm_debug("No match for deleted action %s (%s on %s)", rsc_op_xpath, op_id,
                          node);
                abort_transition(INFINITY, tg_restart, "Resource op removal", match);
                freeXpathObject(op_match);
                free(rsc_op_xpath);
                goto bail;

            } else {
                crm_debug("Deleted lrm_rsc_op %s on %s was for graph event %d",
                          op_id, node, cancelled->id);
            }
        }

        freeXpathObject(op_match);
        free(rsc_op_xpath);
    }

  bail:
    freeXpathObject(xpathObj);
}
Пример #16
0
bool
xml_acl_filtered_copy(const char *user, xmlNode *acl_source, xmlNode *xml,
                      xmlNode **result)
{
    GListPtr aIter = NULL;
    xmlNode *target = NULL;
    xml_private_t *p = NULL;
    xml_private_t *doc = NULL;

    *result = NULL;
    if (xml == NULL || pcmk_acl_required(user) == FALSE) {
        crm_trace("no acls needed for '%s'", user);
        return FALSE;
    }

    crm_trace("filtering copy of %p for '%s'", xml, user);
    target = copy_xml(xml);
    if (target == NULL) {
        return TRUE;
    }

    pcmk__unpack_acl(acl_source, target, user);
    pcmk__set_xml_flag(target, xpf_acl_enabled);
    pcmk__apply_acl(target);

    doc = target->doc->_private;
    for(aIter = doc->acls; aIter != NULL && target; aIter = aIter->next) {
        int max = 0;
        xml_acl_t *acl = aIter->data;

        if (acl->mode != xpf_acl_deny) {
            /* Nothing to do */

        } else if (acl->xpath) {
            int lpc = 0;
            xmlXPathObjectPtr xpathObj = xpath_search(target, acl->xpath);

            max = numXpathResults(xpathObj);
            for(lpc = 0; lpc < max; lpc++) {
                xmlNode *match = getXpathResult(xpathObj, lpc);

                crm_trace("Purging attributes from %s", acl->xpath);
                if (__xml_purge_attributes(match) == FALSE && match == target) {
                    crm_trace("No access to the entire document for %s", user);
                    freeXpathObject(xpathObj);
                    return TRUE;
                }
            }
            crm_trace("Enforced ACL %s (%d matches)", acl->xpath, max);
            freeXpathObject(xpathObj);
        }
    }

    p = target->_private;
    if (is_set(p->flags, xpf_acl_deny)
        && (__xml_purge_attributes(target) == FALSE)) {
        crm_trace("No access to the entire document for %s", user);
        return TRUE;
    }

    if (doc->acls) {
        g_list_free_full(doc->acls, __xml_acl_free);
        doc->acls = NULL;

    } else {
        crm_trace("Ordinary user '%s' cannot access the CIB without any defined ACLs",
                  doc->user);
        free_xml(target);
        target = NULL;
    }

    if (target) {
        *result = target;
    }

    return TRUE;
}