+static int gen_message_payload(int state, int old_state, const char *interface,
+ cdtime_t timestamp, char **buf) {
+ const unsigned char *buf2;
+ yajl_gen g;
+ char json_str[DATA_MAX_NAME_LEN];
+
+#if !defined(HAVE_YAJL_V2)
+ yajl_gen_config conf = {0};
+#endif
+
+#if HAVE_YAJL_V2
+ size_t len;
+ g = yajl_gen_alloc(NULL);
+ yajl_gen_config(g, yajl_gen_beautify, 0);
+#else
+ unsigned int len;
+ g = yajl_gen_alloc(&conf, NULL);
+#endif
+
+ yajl_gen_clear(g);
+
+ // *** BEGIN common event header ***
+
+ if (yajl_gen_map_open(g) != yajl_gen_status_ok)
+ goto err;
+
+ // domain
+ if (yajl_gen_string(g, (u_char *)CONNECTIVITY_DOMAIN_FIELD,
+ strlen(CONNECTIVITY_DOMAIN_FIELD)) != yajl_gen_status_ok)
+ goto err;
+
+ if (yajl_gen_string(g, (u_char *)CONNECTIVITY_DOMAIN_VALUE,
+ strlen(CONNECTIVITY_DOMAIN_VALUE)) != yajl_gen_status_ok)
+ goto err;
+
+ // eventId
+ if (yajl_gen_string(g, (u_char *)CONNECTIVITY_EVENT_ID_FIELD,
+ strlen(CONNECTIVITY_EVENT_ID_FIELD)) !=
+ yajl_gen_status_ok)
+ goto err;
+
+ event_id = event_id + 1;
+ if (snprintf(json_str, sizeof(json_str), "%d", event_id) < 0) {
+ goto err;
+ }
+
+ if (yajl_gen_number(g, json_str, strlen(json_str)) != yajl_gen_status_ok) {
+ goto err;
+ }
+
+ // eventName
+ if (yajl_gen_string(g, (u_char *)CONNECTIVITY_EVENT_NAME_FIELD,
+ strlen(CONNECTIVITY_EVENT_NAME_FIELD)) !=
+ yajl_gen_status_ok)
+ goto err;
+
+ if (snprintf(json_str, sizeof(json_str), "interface %s %s", interface,
+ (state == 0 ? CONNECTIVITY_EVENT_NAME_DOWN_VALUE
+ : CONNECTIVITY_EVENT_NAME_UP_VALUE)) < 0) {
+ goto err;
+ }
+
+ if (yajl_gen_string(g, (u_char *)json_str, strlen(json_str)) !=
+ yajl_gen_status_ok) {
+ goto err;
+ }
+
+ // lastEpochMicrosec
+ if (yajl_gen_string(g, (u_char *)CONNECTIVITY_LAST_EPOCH_MICROSEC_FIELD,
+ strlen(CONNECTIVITY_LAST_EPOCH_MICROSEC_FIELD)) !=
+ yajl_gen_status_ok)
+ goto err;
+
+ if (snprintf(json_str, sizeof(json_str), "%" PRIu64,
+ CDTIME_T_TO_US(cdtime())) < 0) {
+ goto err;
+ }
+
+ if (yajl_gen_number(g, json_str, strlen(json_str)) != yajl_gen_status_ok) {
+ goto err;
+ }
+
+ // priority
+ if (yajl_gen_string(g, (u_char *)CONNECTIVITY_PRIORITY_FIELD,
+ strlen(CONNECTIVITY_PRIORITY_FIELD)) !=
+ yajl_gen_status_ok)
+ goto err;
+
+ if (yajl_gen_string(g, (u_char *)CONNECTIVITY_PRIORITY_VALUE,
+ strlen(CONNECTIVITY_PRIORITY_VALUE)) !=
+ yajl_gen_status_ok)
+ goto err;
+
+ // reportingEntityName
+ if (yajl_gen_string(g, (u_char *)CONNECTIVITY_REPORTING_ENTITY_NAME_FIELD,
+ strlen(CONNECTIVITY_REPORTING_ENTITY_NAME_FIELD)) !=
+ yajl_gen_status_ok)
+ goto err;
+
+ if (yajl_gen_string(g, (u_char *)CONNECTIVITY_REPORTING_ENTITY_NAME_VALUE,
+ strlen(CONNECTIVITY_REPORTING_ENTITY_NAME_VALUE)) !=
+ yajl_gen_status_ok)
+ goto err;
+
+ // sequence
+ if (yajl_gen_string(g, (u_char *)CONNECTIVITY_SEQUENCE_FIELD,
+ strlen(CONNECTIVITY_SEQUENCE_FIELD)) !=
+ yajl_gen_status_ok)
+ goto err;
+
+ if (yajl_gen_number(g, CONNECTIVITY_SEQUENCE_VALUE,
+ strlen(CONNECTIVITY_SEQUENCE_VALUE)) !=
+ yajl_gen_status_ok)
+ goto err;
+
+ // sourceName
+ if (yajl_gen_string(g, (u_char *)CONNECTIVITY_SOURCE_NAME_FIELD,
+ strlen(CONNECTIVITY_SOURCE_NAME_FIELD)) !=
+ yajl_gen_status_ok)
+ goto err;
+
+ if (yajl_gen_string(g, (u_char *)interface, strlen(interface)) !=
+ yajl_gen_status_ok)
+ goto err;
+
+ // startEpochMicrosec
+ if (yajl_gen_string(g, (u_char *)CONNECTIVITY_START_EPOCH_MICROSEC_FIELD,
+ strlen(CONNECTIVITY_START_EPOCH_MICROSEC_FIELD)) !=
+ yajl_gen_status_ok)
+ goto err;
+
+ if (snprintf(json_str, sizeof(json_str), "%" PRIu64,
+ CDTIME_T_TO_US(timestamp)) < 0) {
+ goto err;
+ }
+
+ if (yajl_gen_number(g, json_str, strlen(json_str)) != yajl_gen_status_ok) {
+ goto err;
+ }
+
+ // version
+ if (yajl_gen_string(g, (u_char *)CONNECTIVITY_VERSION_FIELD,
+ strlen(CONNECTIVITY_VERSION_FIELD)) != yajl_gen_status_ok)
+ goto err;
+
+ if (yajl_gen_number(g, CONNECTIVITY_VERSION_VALUE,
+ strlen(CONNECTIVITY_VERSION_VALUE)) != yajl_gen_status_ok)
+ goto err;
+
+ // *** END common event header ***
+
+ // *** BEGIN state change fields ***
+
+ if (yajl_gen_string(g, (u_char *)CONNECTIVITY_STATE_CHANGE_FIELDS_FIELD,
+ strlen(CONNECTIVITY_STATE_CHANGE_FIELDS_FIELD)) !=
+ yajl_gen_status_ok)
+ goto err;
+
+ if (yajl_gen_map_open(g) != yajl_gen_status_ok)
+ goto err;
+
+ // newState
+ if (yajl_gen_string(g, (u_char *)CONNECTIVITY_NEW_STATE_FIELD,
+ strlen(CONNECTIVITY_NEW_STATE_FIELD)) !=
+ yajl_gen_status_ok)
+ goto err;
+
+ int new_state_len =
+ (state == 0 ? strlen(CONNECTIVITY_NEW_STATE_FIELD_DOWN_VALUE)
+ : strlen(CONNECTIVITY_NEW_STATE_FIELD_UP_VALUE));
+
+ if (yajl_gen_string(g,
+ (u_char *)(state == 0
+ ? CONNECTIVITY_NEW_STATE_FIELD_DOWN_VALUE
+ : CONNECTIVITY_NEW_STATE_FIELD_UP_VALUE),
+ new_state_len) != yajl_gen_status_ok)
+ goto err;
+
+ // oldState
+ if (yajl_gen_string(g, (u_char *)CONNECTIVITY_OLD_STATE_FIELD,
+ strlen(CONNECTIVITY_OLD_STATE_FIELD)) !=
+ yajl_gen_status_ok)
+ goto err;
+
+ int old_state_len =
+ (old_state == 0 ? strlen(CONNECTIVITY_OLD_STATE_FIELD_DOWN_VALUE)
+ : strlen(CONNECTIVITY_OLD_STATE_FIELD_UP_VALUE));
+
+ if (yajl_gen_string(g,
+ (u_char *)(old_state == 0
+ ? CONNECTIVITY_OLD_STATE_FIELD_DOWN_VALUE
+ : CONNECTIVITY_OLD_STATE_FIELD_UP_VALUE),
+ old_state_len) != yajl_gen_status_ok)
+ goto err;
+
+ // stateChangeFieldsVersion
+ if (yajl_gen_string(g,
+ (u_char *)CONNECTIVITY_STATE_CHANGE_FIELDS_VERSION_FIELD,
+ strlen(CONNECTIVITY_STATE_CHANGE_FIELDS_VERSION_FIELD)) !=
+ yajl_gen_status_ok)
+ goto err;
+
+ if (yajl_gen_number(g, CONNECTIVITY_STATE_CHANGE_FIELDS_VERSION_VALUE,
+ strlen(CONNECTIVITY_STATE_CHANGE_FIELDS_VERSION_VALUE)) !=
+ yajl_gen_status_ok)
+ goto err;
+
+ // stateInterface
+ if (yajl_gen_string(g, (u_char *)CONNECTIVITY_STATE_INTERFACE_FIELD,
+ strlen(CONNECTIVITY_STATE_INTERFACE_FIELD)) !=
+ yajl_gen_status_ok)
+ goto err;
+
+ if (yajl_gen_string(g, (u_char *)interface, strlen(interface)) !=
+ yajl_gen_status_ok)
+ goto err;
+
+ // close state change and header fields
+ if (yajl_gen_map_close(g) != yajl_gen_status_ok ||
+ yajl_gen_map_close(g) != yajl_gen_status_ok)
+ goto err;
+
+ // *** END state change fields ***
+
+ if (yajl_gen_get_buf(g, &buf2, &len) != yajl_gen_status_ok)
+ goto err;
+
+ *buf = strdup((char *)buf2);
+
+ if (*buf == NULL) {
+ ERROR("connectivity plugin: strdup failed during gen_message_payload: %s",
+ STRERRNO);
+ goto err;
+ }
+
+ yajl_gen_free(g);
+
+ return 0;
+
+err:
+ yajl_gen_free(g);
+ ERROR("connectivity plugin: gen_message_payload failed to generate JSON");
+ return -1;
+}
+
+static interface_list_t *add_interface(const char *interface, int status,
+ int prev_status) {
+ interface_list_t *il = calloc(1, sizeof(*il));
+
+ if (il == NULL) {
+ ERROR("connectivity plugin: calloc failed during add_interface: %s",
+ STRERRNO);
+ return NULL;
+ }
+
+ char *interface2 = strdup(interface);
+ if (interface2 == NULL) {
+ sfree(il);
+ ERROR("connectivity plugin: strdup failed during add_interface: %s",
+ STRERRNO);
+ return NULL;
+ }
+
+ il->interface = interface2;
+ il->status = status;
+ il->prev_status = prev_status;
+ il->timestamp = cdtime();
+ il->sent = 0;
+ il->next = interface_list_head;
+ interface_list_head = il;