--- /dev/null
+/*************************************************************************
+*
+* Copyright 2020 highstreet technologies GmbH and others
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+***************************************************************************/
+
+#define _GNU_SOURCE
+
+#include "netconf_call_home.h"
+#include "utils/log_utils.h"
+#include "utils/sys_utils.h"
+#include "utils/rand_utils.h"
+#include "utils/http_client.h"
+#include "utils/nts_utils.h"
+#include <stdio.h>
+#include <assert.h>
+
+#include "core/session.h"
+#include "core/framework.h"
+
+#define NETCONF_CALLHOME_ENABLED_SCHEMA_PATH "/nts-network-function:simulation/network-function/netconf/call-home"
+#define NETCONF_CALLHOME_CURL_SEND_PAYLOAD_FORMAT "{\"odl-netconf-callhome-server:device\":[{\"odl-netconf-callhome-server:unique-id\":\"%s\",\"odl-netconf-callhome-server:ssh-host-key\":\"%s\",\"odl-netconf-callhome-server:credentials\":{\"odl-netconf-callhome-server:username\":\"netconf\",\"odl-netconf-callhome-server:passwords\":[\"netconf\"]}}]}"
+#define SDN_CONTROLLER_DETAILS_SCHEMA_PATH "/nts-network-function:simulation/sdn-controller"
+
+static int create_ssh_callhome_endpoint(sr_session_ctx_t *current_session, struct lyd_node *netconf_node);
+static int create_tls_callhome_endpoint(sr_session_ctx_t *current_session, struct lyd_node *netconf_node);
+static int send_odl_callhome_configuration(sr_session_ctx_t *current_session);
+
+int netconf_call_home_feature_start(sr_session_ctx_t *current_session) {
+ assert(current_session);
+ assert_session();
+
+ sr_val_t *value = 0;
+
+ bool callhome_enabled = false;
+ int rc = sr_get_item(current_session, NETCONF_CALLHOME_ENABLED_SCHEMA_PATH, 0, &value);
+ if(rc == SR_ERR_OK) {
+ callhome_enabled = value->data.bool_val;
+ sr_free_val(value);
+ }
+
+ if(callhome_enabled == false) {
+ log_message(2, "NETCONF CallHome is not enabled, not configuring NETCONF Server.\n");
+ return NTS_ERR_OK;
+ }
+
+ struct lyd_node *netconf_node = 0;
+ netconf_node = lyd_new_path(NULL, session_context, "/ietf-netconf-server:netconf-server", 0, 0, 0);
+ if(netconf_node == 0) {
+ log_error("could not create a new lyd_node");
+ return NTS_ERR_FAILED;
+ }
+
+ rc = create_ssh_callhome_endpoint(current_session, netconf_node);
+ if(rc != NTS_ERR_OK) {
+ log_error("could not create SSH CallHome endpoint on the NETCONF Server");
+ return NTS_ERR_FAILED;
+ }
+
+ rc = create_tls_callhome_endpoint(current_session, netconf_node);
+ if(rc != NTS_ERR_OK) {
+ log_error("could not create TLS CallHome endpoint on the NETCONF Server");
+ return NTS_ERR_FAILED;
+ }
+
+ rc = sr_edit_batch(current_session, netconf_node, "merge");
+ if(rc != SR_ERR_OK) {
+ log_error("could not edit batch on datastore");
+ return NTS_ERR_FAILED;
+ }
+
+ rc = sr_validate(current_session, "ietf-netconf-server", 0);
+ if(rc != SR_ERR_OK) {
+ struct ly_err_item *err = ly_err_first(session_context);
+ log_error("sr_validate issues on STARTUP: %s", err->msg);
+ return NTS_ERR_FAILED;
+ }
+
+ rc = sr_apply_changes(current_session, 0, 0);
+ if(rc != SR_ERR_OK) {
+ log_error("could not apply changes on datastore");
+ return NTS_ERR_FAILED;
+ }
+
+ lyd_free_withsiblings(netconf_node);
+
+ return NTS_ERR_OK;
+}
+
+
+static int create_ssh_callhome_endpoint(sr_session_ctx_t *current_session, struct lyd_node *netconf_node) {
+ assert(current_session);
+ assert(netconf_node);
+
+ sr_val_t *value = 0;
+
+ bool callhome_enabled = false;
+ int rc = sr_get_item(current_session, NETCONF_CALLHOME_ENABLED_SCHEMA_PATH, 0, &value);
+ if(rc == SR_ERR_OK) {
+ callhome_enabled = value->data.bool_val;
+ sr_free_val(value);
+ }
+
+ if(callhome_enabled == false) {
+ log_message(2, "NETCONF CallHome is not enabled, not configuring NETCONF Server.\n");
+ return NTS_ERR_OK;
+ }
+
+ controller_details_t *controller = controller_details_get(current_session);
+ if(controller == 0) {
+ log_error("controller_details_get failed");
+ return NTS_ERR_FAILED;
+ }
+
+ char *controller_ip = strdup(controller->ip);
+ uint16_t controller_callhome_port = controller->nc_callhome_port;
+ controller_details_free(controller);
+
+ if(controller_ip == 0) {
+ log_error("strdup failed");
+ return NTS_ERR_FAILED;
+ }
+
+ char xpath[500];
+ sprintf(xpath, "/ietf-netconf-server:netconf-server/call-home/netconf-client[name='default-client']/endpoints/endpoint[name='callhome-ssh']/ssh/tcp-client-parameters/keepalives/idle-time");
+ struct lyd_node *rcl = lyd_new_path(netconf_node, 0, xpath, "1", 0, LYD_PATH_OPT_NOPARENTRET);
+ if(rcl == 0) {
+ log_error("could not created yang path");
+ free(controller_ip);
+ return NTS_ERR_FAILED;
+ }
+
+ sprintf(xpath, "/ietf-netconf-server:netconf-server/call-home/netconf-client[name='default-client']/endpoints/endpoint[name='callhome-ssh']/ssh/tcp-client-parameters/keepalives/max-probes");
+ rcl = lyd_new_path(netconf_node, 0, xpath, "10", 0, LYD_PATH_OPT_NOPARENTRET);
+ if(rcl == 0) {
+ log_error("could not created yang path");
+ free(controller_ip);
+ return NTS_ERR_FAILED;
+ }
+
+ sprintf(xpath, "/ietf-netconf-server:netconf-server/call-home/netconf-client[name='default-client']/endpoints/endpoint[name='callhome-ssh']/ssh/tcp-client-parameters/keepalives/probe-interval");
+ rcl = lyd_new_path(netconf_node, 0, xpath, "5", 0, LYD_PATH_OPT_NOPARENTRET);
+ if(rcl == 0) {
+ log_error("could not created yang path");
+ free(controller_ip);
+ return NTS_ERR_FAILED;
+ }
+
+ sprintf(xpath, "/ietf-netconf-server:netconf-server/call-home/netconf-client[name='default-client']/endpoints/endpoint[name='callhome-ssh']/ssh/tcp-client-parameters/remote-address");
+ rcl = lyd_new_path(netconf_node, 0, xpath, controller_ip, 0, LYD_PATH_OPT_NOPARENTRET);
+ if(rcl == 0) {
+ log_error("could not created yang path");
+ free(controller_ip);
+ return NTS_ERR_FAILED;
+ }
+ free(controller_ip);
+
+ sprintf(xpath, "/ietf-netconf-server:netconf-server/call-home/netconf-client[name='default-client']/endpoints/endpoint[name='callhome-ssh']/ssh/tcp-client-parameters/remote-port");
+ char port[20];
+ sprintf(port, "%d", controller_callhome_port);
+ rcl = lyd_new_path(netconf_node, 0, xpath, port, 0, LYD_PATH_OPT_NOPARENTRET);
+ if(rcl == 0) {
+ log_error("could not created yang path");
+ return NTS_ERR_FAILED;
+ }
+
+ sprintf(xpath, "/ietf-netconf-server:netconf-server/call-home/netconf-client[name='default-client']/endpoints/endpoint[name='callhome-ssh']/ssh/ssh-server-parameters/server-identity/host-key[name='default-key']/public-key/keystore-reference");
+ rcl = lyd_new_path(netconf_node, 0, xpath, KS_KEY_NAME, 0, LYD_PATH_OPT_NOPARENTRET);
+ if(rcl == 0) {
+ log_error("could not created yang path");
+ return NTS_ERR_FAILED;
+ }
+
+ sprintf(xpath, "/ietf-netconf-server:netconf-server/call-home/netconf-client[name='default-client']/endpoints/endpoint[name='callhome-ssh']/ssh/ssh-server-parameters/client-authentication/supported-authentication-methods/publickey");
+ rcl = lyd_new_path(netconf_node, 0, xpath, "", 0, LYD_PATH_OPT_NOPARENTRET);
+ if(rcl == 0) {
+ log_error("could not created yang path");
+ return NTS_ERR_FAILED;
+ }
+
+ sprintf(xpath, "/ietf-netconf-server:netconf-server/call-home/netconf-client[name='default-client']/endpoints/endpoint[name='callhome-ssh']/ssh/ssh-server-parameters/client-authentication/supported-authentication-methods/passsword");
+ rcl = lyd_new_path(netconf_node, 0, xpath, "", 0, LYD_PATH_OPT_NOPARENTRET);
+ if(rcl == 0) {
+ log_error("could not created yang path");
+ return NTS_ERR_FAILED;
+ }
+
+ sprintf(xpath, "/ietf-netconf-server:netconf-server/call-home/netconf-client[name='default-client']/endpoints/endpoint[name='callhome-ssh']/ssh/ssh-server-parameters/client-authentication/supported-authentication-methods/other");
+ rcl = lyd_new_path(netconf_node, 0, xpath, "interactive", 0, LYD_PATH_OPT_NOPARENTRET);
+ if(rcl == 0) {
+ log_error("could not created yang path");
+ return NTS_ERR_FAILED;
+ }
+
+ sprintf(xpath, "/ietf-netconf-server:netconf-server/call-home/netconf-client[name='default-client']/endpoints/endpoint[name='callhome-ssh']/ssh/ssh-server-parameters/client-authentication/users");
+ rcl = lyd_new_path(netconf_node, 0, xpath, "", 0, LYD_PATH_OPT_NOPARENTRET);
+ if(rcl == 0) {
+ log_error("could not created yang path");
+ return NTS_ERR_FAILED;
+ }
+
+ sprintf(xpath, "/ietf-netconf-server:netconf-server/call-home/netconf-client[name='default-client']/connection-type/persistent");
+ rcl = lyd_new_path(netconf_node, 0, xpath, "", 0, LYD_PATH_OPT_NOPARENTRET);
+ if(rcl == 0) {
+ log_error("could not created yang path");
+ return NTS_ERR_FAILED;
+ }
+
+ rc = send_odl_callhome_configuration(current_session);
+ if(rc != NTS_ERR_OK) {
+ log_message(2, "could not send ODL Call Home configuration.\n");
+ }
+
+ return NTS_ERR_OK;
+}
+
+static int create_tls_callhome_endpoint(sr_session_ctx_t *current_session, struct lyd_node *netconf_node) {
+ assert(current_session);
+ assert(netconf_node);
+
+ // checkAS future usage, TLS endpoint yet supported in ODL
+
+ return NTS_ERR_OK;
+}
+
+
+static int send_odl_callhome_configuration(sr_session_ctx_t *current_session) {
+ assert(current_session);
+
+ char *public_ssh_key = read_key(SERVER_PUBLIC_SSH_KEY_PATH);
+ if(public_ssh_key == 0) {
+ log_error("could not read the public ssh key from file %s", SERVER_PUBLIC_SSH_KEY_PATH);
+ return NTS_ERR_FAILED;
+ }
+
+ char *ssh_key_string;
+ ssh_key_string = strtok(public_ssh_key, " ");
+ ssh_key_string = strtok(NULL, " ");
+
+ // checkAS we have hardcoded here the username and password of the NETCONF Server
+ char *odl_callhome_payload = 0;
+ asprintf(&odl_callhome_payload, NETCONF_CALLHOME_CURL_SEND_PAYLOAD_FORMAT, framework_environment.hostname, ssh_key_string);
+ free(public_ssh_key);
+ if(odl_callhome_payload == 0) {
+ log_error("bad asprintf");
+ return NTS_ERR_FAILED;
+ }
+
+ controller_details_t *controller = controller_details_get(current_session);
+ if(controller == 0) {
+ log_error("controller_details_get failed");
+ return NTS_ERR_FAILED;
+ }
+
+ char *url = 0;
+ asprintf(&url, "%s/rests/data/odl-netconf-callhome-server:netconf-callhome-server/allowed-devices/device=%s", controller->base_url, framework_environment.hostname);
+ if(url == 0) {
+ log_error("bad asprintf");
+ controller_details_free(controller);
+ return NTS_ERR_FAILED;
+ }
+
+ int rc = http_request(url, controller->username, controller->password, "PUT", odl_callhome_payload, 0, 0);
+ if(rc != NTS_ERR_OK) {
+ log_error("http_request failed");
+ }
+
+ free(url);
+ controller_details_free(controller);
+ free(odl_callhome_payload);
+
+ return rc;
+}
Code Review / sim / o1-interface.git / blobdiff