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gerrit.cesnet.cz / github / CESNET / libnetconf2 / b6c64d37d7305eacb1b6048151696476cbb33405 / . / src / server_config.c
blob: d0a7b653f174421650417ee03be1f86768673c19 [file] [log] [blame]
/**
* @file server_config.c
* @author Roman Janota <janota@cesnet.cz>
* @brief libnetconf2 server configuration functions
*
* @copyright
* Copyright (c) 2022-2023 CESNET, z.s.p.o.
*
* This source code is licensed under BSD 3-Clause License (the "License").
* You may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://opensource.org/licenses/BSD-3-Clause
*/
#define _GNU_SOURCE
#include <assert.h>
#include <ctype.h>
#include <pthread.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <libyang/libyang.h>
#include <libyang/tree_data.h>
#include "compat.h"
#include "config.h"
#include "log_p.h"
#include "server_config.h"
#include "server_config_p.h"
#include "session_p.h"
extern struct nc_server_opts server_opts;
/* returns a parent node of 'node' that matches the name 'name' */
static const struct lyd_node *
nc_server_config_get_parent(const struct lyd_node *node, const char *name)
{
NC_CHECK_ARG_RET(NULL, node, name, NULL);
while (node) {
if (!strcmp(LYD_NAME(node), name)) {
return node;
}
node = lyd_parent(node);
}
return NULL;
}
/* returns a parent list node of 'node' that matches the name 'name' */
static const struct lyd_node *
nc_server_config_get_parent_list(const struct lyd_node *node, const char *name)
{
NC_CHECK_ARG_RET(NULL, node, name, NULL);
while (node) {
/* check if the node is a list and its name matches the param */
if ((node->schema->nodetype == LYS_LIST) && (!strcmp(LYD_NAME(node), name))) {
return node;
}
node = lyd_parent(node);
}
return NULL;
}
/* returns the key of a list node with the name 'name' */
static const char *
nc_server_config_get_parent_list_key_value(const struct lyd_node *node, const char *name, const char *key_name)
{
const char *original_name;
NC_CHECK_ARG_RET(NULL, node, name, key_name, NULL);
original_name = LYD_NAME(node);
/* get the supposed parent list */
node = nc_server_config_get_parent_list(node, name);
if (!node) {
ERR(NULL, "Node \"%s\" not contained in \"%s\" subtree.", original_name, name);
return NULL;
}
/* child should be the key */
node = lyd_child(node);
if (!node) {
ERR(NULL, "Node \"%s\" has no child nodes.", name);
return NULL;
}
if (strcmp(LYD_NAME(node), key_name)) {
ERR(NULL, "Node \"%s\" child names mismatch (found:\"%s\", expected:\"%s\").", original_name, LYD_NAME(node), key_name);
return NULL;
}
return lyd_get_value(node);
}
/* returns true if a node is a part of the listen subtree */
static int
is_listen(const struct lyd_node *node)
{
node = nc_server_config_get_parent(node, "listen");
return node != NULL;
}
/* returns true if a node is a part of the Call Home subtree */
static int
is_ch(const struct lyd_node *node)
{
node = nc_server_config_get_parent(node, "call-home");
return node != NULL;
}
#ifdef NC_ENABLED_SSH_TLS
/* returns true if a node is a part of the ssh subtree */
static int
is_ssh(const struct lyd_node *node)
{
node = nc_server_config_get_parent(node, "ssh");
return node != NULL;
}
/* returns true if a node is a part of the tls subtree */
static int
is_tls(const struct lyd_node *node)
{
node = nc_server_config_get_parent(node, "tls");
return node != NULL;
}
#endif /* NC_ENABLED_SSH_TLS */
/* gets the endpoint struct (and optionally bind) based on node's location in the YANG data tree */
static int
nc_server_config_get_endpt(const struct lyd_node *node, struct nc_endpt **endpt, struct nc_bind **bind)
{
uint16_t i;
const char *name;
NC_CHECK_ARG_RET(NULL, node, endpt, 1);
name = nc_server_config_get_parent_list_key_value(node, "endpoint", "name");
if (!name) {
return 1;
}
for (i = 0; i < server_opts.endpt_count; i++) {
if (!strcmp(server_opts.endpts[i].name, name)) {
*endpt = &server_opts.endpts[i];
if (bind) {
*bind = &server_opts.binds[i];
}
return 0;
}
}
ERR(NULL, "Endpoint \"%s\" was not found.", name);
return 1;
}
/* gets the ch_client struct based on node's location in the YANG data tree
* THE ch_client_lock HAS TO BE LOCKED PRIOR TO CALLING THIS
*/
static int
nc_server_config_get_ch_client(const struct lyd_node *node, struct nc_ch_client **ch_client)
{
uint16_t i;
const char *name;
NC_CHECK_ARG_RET(NULL, node, ch_client, 1);
name = nc_server_config_get_parent_list_key_value(node, "netconf-client", "name");
if (!name) {
return 1;
}
for (i = 0; i < server_opts.ch_client_count; i++) {
if (!strcmp(server_opts.ch_clients[i].name, name)) {
*ch_client = &server_opts.ch_clients[i];
return 0;
}
}
ERR(NULL, "Call-home client \"%s\" was not found.", name);
return 1;
}
/* gets the ch_endpt struct based on node's location in the YANG data tree,
* ch_client has to be locked
*/
static int
nc_server_config_get_ch_endpt(const struct lyd_node *node, const struct nc_ch_client *ch_client,
struct nc_ch_endpt **ch_endpt)
{
uint16_t i;
const char *name;
NC_CHECK_ARG_RET(NULL, node, ch_client, ch_endpt, 1);
name = nc_server_config_get_parent_list_key_value(node, "endpoint", "name");
if (!name) {
return 1;
}
for (i = 0; i < ch_client->ch_endpt_count; i++) {
if (!strcmp(ch_client->ch_endpts[i].name, name)) {
*ch_endpt = &ch_client->ch_endpts[i];
return 0;
}
}
ERR(NULL, "Call-home client's \"%s\" endpoint \"%s\" was not found.", ch_client->name, name);
return 1;
}
#ifdef NC_ENABLED_SSH_TLS
/* gets the ssh_opts struct based on node's location in the YANG data tree */
static int
nc_server_config_get_ssh_opts(const struct lyd_node *node, const struct nc_ch_client *ch_client,
struct nc_server_ssh_opts **opts)
{
struct nc_endpt *endpt;
struct nc_ch_endpt *ch_endpt;
NC_CHECK_ARG_RET(NULL, node, opts, 1);
if (is_listen(node)) {
if (nc_server_config_get_endpt(node, &endpt, NULL)) {
return 1;
}
*opts = endpt->opts.ssh;
} else {
if (nc_server_config_get_ch_endpt(node, ch_client, &ch_endpt)) {
return 1;
}
*opts = ch_endpt->opts.ssh;
}
return 0;
}
/* gets the hostkey struct based on node's location in the YANG data tree */
static int
nc_server_config_get_hostkey(const struct lyd_node *node, const struct nc_ch_client *ch_client,
struct nc_hostkey **hostkey)
{
uint16_t i;
const char *name;
struct nc_server_ssh_opts *opts;
NC_CHECK_ARG_RET(NULL, node, hostkey, 1);
if (nc_server_config_get_ssh_opts(node, ch_client, &opts)) {
return 1;
}
name = nc_server_config_get_parent_list_key_value(node, "host-key", "name");
if (!name) {
return 1;
}
for (i = 0; i < opts->hostkey_count; i++) {
if (!strcmp(opts->hostkeys[i].name, name)) {
*hostkey = &opts->hostkeys[i];
return 0;
}
}
ERR(NULL, "Host-key \"%s\" was not found.", name);
return 1;
}
/* gets the client_auth struct based on node's location in the YANG data tree */
static int
nc_server_config_get_auth_client(const struct lyd_node *node, const struct nc_ch_client *ch_client,
struct nc_auth_client **auth_client)
{
uint16_t i;
const char *name;
struct nc_server_ssh_opts *opts;
NC_CHECK_ARG_RET(NULL, node, auth_client, 1);
if (nc_server_config_get_ssh_opts(node, ch_client, &opts)) {
return 1;
}
name = nc_server_config_get_parent_list_key_value(node, "user", "name");
if (!name) {
return 1;
}
for (i = 0; i < opts->client_count; i++) {
if (!strcmp(opts->auth_clients[i].username, name)) {
*auth_client = &opts->auth_clients[i];
return 0;
}
}
ERR(NULL, "Authorized key \"%s\" was not found.", name);
return 1;
}
/* gets the pubkey struct based on node's location in the YANG data tree */
static int
nc_server_config_get_pubkey(const struct lyd_node *node, const struct nc_ch_client *ch_client,
struct nc_public_key **pubkey)
{
uint16_t i;
const char *name;
struct nc_auth_client *auth_client;
NC_CHECK_ARG_RET(NULL, node, pubkey, 1);
if (nc_server_config_get_auth_client(node, ch_client, &auth_client)) {
return 1;
}
name = nc_server_config_get_parent_list_key_value(node, "public-key", "name");
if (!name) {
return 1;
}
for (i = 0; i < auth_client->pubkey_count; i++) {
if (!strcmp(auth_client->pubkeys[i].name, name)) {
*pubkey = &auth_client->pubkeys[i];
return 0;
}
}
ERR(NULL, "Public key \"%s\" was not found.", name);
return 1;
}
/* gets the tls_opts struct based on node's location in the YANG data tree */
static int
nc_server_config_get_tls_opts(const struct lyd_node *node, const struct nc_ch_client *ch_client,
struct nc_server_tls_opts **opts)
{
struct nc_endpt *endpt;
struct nc_ch_endpt *ch_endpt;
NC_CHECK_ARG_RET(NULL, node, opts, 1);
if (is_listen(node)) {
if (nc_server_config_get_endpt(node, &endpt, NULL)) {
return 1;
}
*opts = endpt->opts.tls;
} else {
if (nc_server_config_get_ch_endpt(node, ch_client, &ch_endpt)) {
return 1;
}
*opts = ch_endpt->opts.tls;
}
return 0;
}
/* gets the cert struct based on node's location in the YANG data tree */
static int
nc_server_config_get_cert(const struct lyd_node *node, const struct nc_ch_client *ch_client,
struct nc_certificate **cert)
{
uint16_t i;
const char *name;
struct nc_cert_grouping *certs;
struct nc_server_tls_opts *opts;
int is_cert_end_entity;
const struct lyd_node *tmp;
NC_CHECK_ARG_RET(NULL, node, cert, 1);
if (nc_server_config_get_tls_opts(node, ch_client, &opts)) {
return 1;
}
name = nc_server_config_get_parent_list_key_value(node, "certificate", "name");
if (!name) {
return 1;
}
/* it's in certificate subtree, now check if it's end entity or certificate authority */
tmp = nc_server_config_get_parent(node, "ee-certs");
if (tmp) {
is_cert_end_entity = 1;
} else {
tmp = nc_server_config_get_parent(node, "ca-certs");
if (!tmp) {
ERR(NULL, "Node \"%s\" is not contained in ee-certs nor ca-certs subtree.", name);
return 1;
}
is_cert_end_entity = 0;
}
/* get the right cert stack, either ee or ca */
if (is_cert_end_entity) {
certs = &opts->ee_certs;
} else {
certs = &opts->ca_certs;
}
for (i = 0; i < certs->cert_count; i++) {
if (!strcmp(certs->certs[i].name, name)) {
*cert = &certs->certs[i];
return 0;
}
}
ERR(NULL, "%s certificate \"%s\" was not found.", is_cert_end_entity ? "End-entity" : "Certificate authority", name);
return 1;
}
/* gets the ctn struct based on node's location in the YANG data tree */
static int
nc_server_config_get_ctn(const struct lyd_node *node, const struct nc_ch_client *ch_client,
struct nc_ctn **ctn)
{
uint32_t id;
struct nc_ctn *iter;
struct nc_server_tls_opts *opts;
const char *name;
NC_CHECK_ARG_RET(NULL, node, ctn, 1);
if (nc_server_config_get_tls_opts(node, ch_client, &opts)) {
return 1;
}
name = LYD_NAME(node);
node = nc_server_config_get_parent_list(node, "cert-to-name");
if (!node) {
ERR(NULL, "Node \"%s\" is not contained in a cert-to-name subtree.", name);
return 1;
}
node = lyd_child(node);
assert(!strcmp(LYD_NAME(node), "id"));
id = ((struct lyd_node_term *)node)->value.uint32;
iter = opts->ctn;
while (iter) {
if (iter->id == id) {
*ctn = iter;
return 0;
}
iter = iter->next;
}
ERR(NULL, "Cert-to-name entry with id \"%d\" was not found.", id);
return 1;
}
NC_PRIVKEY_FORMAT
nc_server_config_get_private_key_type(const char *format)
{
if (!strcmp(format, "rsa-private-key-format")) {
return NC_PRIVKEY_FORMAT_RSA;
} else if (!strcmp(format, "ec-private-key-format")) {
return NC_PRIVKEY_FORMAT_EC;
} else if (!strcmp(format, "private-key-info-format")) {
return NC_PRIVKEY_FORMAT_X509;
} else if (!strcmp(format, "openssh-private-key-format")) {
return NC_PRIVKEY_FORMAT_OPENSSH;
} else {
ERR(NULL, "Private key format (%s) not supported.", format);
return NC_PRIVKEY_FORMAT_UNKNOWN;
}
}
#endif /* NC_ENABLED_SSH_TLS */
/* gets the ch_client struct based on node's location in the YANG data tree and locks it for reading */
static int
nc_server_config_get_ch_client_with_lock(const struct lyd_node *node, struct nc_ch_client **ch_client)
{
uint16_t i;
const char *name;
NC_CHECK_ARG_RET(NULL, node, ch_client, 1);
name = nc_server_config_get_parent_list_key_value(node, "netconf-client", "name");
if (!name) {
return 1;
}
/* LOCK */
pthread_rwlock_rdlock(&server_opts.ch_client_lock);
for (i = 0; i < server_opts.ch_client_count; i++) {
if (!strcmp(server_opts.ch_clients[i].name, name)) {
/* LOCK */
pthread_mutex_lock(&server_opts.ch_clients[i].lock);
*ch_client = &server_opts.ch_clients[i];
return 0;
}
}
/* UNLOCK */
pthread_rwlock_unlock(&server_opts.ch_client_lock);
ERR(NULL, "Call-home client \"%s\" was not found.", name);
return 1;
}
static void
nc_ch_client_unlock(struct nc_ch_client *client)
{
assert(client);
pthread_mutex_unlock(&client->lock);
pthread_rwlock_unlock(&server_opts.ch_client_lock);
}
int
equal_parent_name(const struct lyd_node *node, uint16_t parent_count, const char *parent_name)
{
uint16_t i;
assert(node && parent_count && parent_name);
node = lyd_parent(node);
for (i = 1; i < parent_count; i++) {
node = lyd_parent(node);
}
if (!strcmp(LYD_NAME(node), parent_name)) {
return 1;
}
return 0;
}
int
nc_server_config_realloc(const char *key_value, void **ptr, size_t size, uint16_t *count)
{
int ret = 0;
void *tmp;
char **name;
tmp = realloc(*ptr, (*count + 1) * size);
NC_CHECK_ERRMEM_GOTO(!tmp, ret = 1, cleanup);
*ptr = tmp;
/* set the newly allocated memory to 0 */
memset((char *)(*ptr) + (*count * size), 0, size);
(*count)++;
/* access the first member of the supposed structure */
name = (char **)((*ptr) + ((*count - 1) * size));
/* and set it's value */
*name = strdup(key_value);
NC_CHECK_ERRMEM_GOTO(!*name, ret = 1, cleanup);
cleanup:
return ret;
}
#ifdef NC_ENABLED_SSH_TLS
static void
nc_server_config_del_hostkey(struct nc_server_ssh_opts *opts, struct nc_hostkey *hostkey)
{
assert(hostkey->store == NC_STORE_LOCAL || hostkey->store == NC_STORE_KEYSTORE);
free(hostkey->name);
if (hostkey->store == NC_STORE_LOCAL) {
free(hostkey->key.pubkey_data);
free(hostkey->key.privkey_data);
} else {
free(hostkey->ks_ref);
}
opts->hostkey_count--;
if (!opts->hostkey_count) {
free(opts->hostkeys);
opts->hostkeys = NULL;
} else if (hostkey != &opts->hostkeys[opts->hostkey_count]) {
memcpy(hostkey, &opts->hostkeys[opts->hostkey_count], sizeof *opts->hostkeys);
}
}
static void
nc_server_config_del_auth_client_pubkey(struct nc_auth_client *auth_client, struct nc_public_key *pubkey)
{
free(pubkey->name);
free(pubkey->data);
auth_client->pubkey_count--;
if (!auth_client->pubkey_count) {
free(auth_client->pubkeys);
auth_client->pubkeys = NULL;
} else if (pubkey != &auth_client->pubkeys[auth_client->pubkey_count]) {
memcpy(pubkey, &auth_client->pubkeys[auth_client->pubkey_count], sizeof *auth_client->pubkeys);
}
}
static void
nc_server_config_del_auth_client(struct nc_server_ssh_opts *opts, struct nc_auth_client *auth_client)
{
uint16_t i, pubkey_count;
free(auth_client->username);
if (auth_client->store == NC_STORE_LOCAL) {
pubkey_count = auth_client->pubkey_count;
for (i = 0; i < pubkey_count; i++) {
nc_server_config_del_auth_client_pubkey(auth_client, &auth_client->pubkeys[i]);
}
} else if (auth_client->store == NC_STORE_TRUSTSTORE) {
free(auth_client->ts_ref);
}
free(auth_client->password);
opts->client_count--;
if (!opts->client_count) {
free(opts->auth_clients);
opts->auth_clients = NULL;
} else if (auth_client != &opts->auth_clients[opts->client_count]) {
memcpy(auth_client, &opts->auth_clients[opts->client_count], sizeof *opts->auth_clients);
}
}
static void
nc_server_config_del_ssh_opts(struct nc_bind *bind, struct nc_server_ssh_opts *opts)
{
uint16_t i, hostkey_count, client_count;
if (bind) {
free(bind->address);
if (bind->sock > -1) {
close(bind->sock);
}
}
/* store in variable because it gets decremented in the function call */
hostkey_count = opts->hostkey_count;
for (i = 0; i < hostkey_count; i++) {
nc_server_config_del_hostkey(opts, &opts->hostkeys[i]);
}
client_count = opts->client_count;
for (i = 0; i < client_count; i++) {
nc_server_config_del_auth_client(opts, &opts->auth_clients[i]);
}
free(opts->hostkey_algs);
free(opts->kex_algs);
free(opts->encryption_algs);
free(opts->mac_algs);
free(opts);
}
/* delete references to endpoint with the name 'referenced_endpt_name' from other endpts */
static void
nc_server_config_del_endpt_references(const char *referenced_endpt_name)
{
uint16_t i, j;
/* first go through listen endpoints */
for (i = 0; i < server_opts.endpt_count; i++) {
if (server_opts.endpts[i].referenced_endpt_name) {
if (!strcmp(server_opts.endpts[i].referenced_endpt_name, referenced_endpt_name)) {
free(server_opts.endpts[i].referenced_endpt_name);
server_opts.endpts[i].referenced_endpt_name = NULL;
if (server_opts.endpts[i].ti == NC_TI_SSH) {
server_opts.endpts[i].opts.ssh->referenced_endpt_name = NULL;
} else {
server_opts.endpts[i].opts.tls->referenced_endpt_name = NULL;
}
}
}
}
/* LOCK */
pthread_rwlock_rdlock(&server_opts.ch_client_lock);
/* next go through ch endpoints */
for (i = 0; i < server_opts.ch_client_count; i++) {
/* LOCK */
pthread_mutex_lock(&server_opts.ch_clients[i].lock);
for (j = 0; j < server_opts.ch_clients[i].ch_endpt_count; j++) {
if (server_opts.ch_clients[i].ch_endpts[j].referenced_endpt_name) {
if (!strcmp(server_opts.ch_clients[i].ch_endpts[j].referenced_endpt_name, referenced_endpt_name)) {
free(server_opts.ch_clients[i].ch_endpts[j].referenced_endpt_name);
server_opts.ch_clients[i].ch_endpts[j].referenced_endpt_name = NULL;
if (server_opts.ch_clients[i].ch_endpts[j].ti == NC_TI_SSH) {
server_opts.ch_clients[i].ch_endpts[j].opts.ssh->referenced_endpt_name = NULL;
} else {
server_opts.ch_clients[i].ch_endpts[j].opts.tls->referenced_endpt_name = NULL;
}
}
}
}
/* UNLOCK */
pthread_mutex_unlock(&server_opts.ch_clients[i].lock);
}
/* UNLOCK */
pthread_rwlock_unlock(&server_opts.ch_client_lock);
}
void
nc_server_config_del_endpt_ssh(struct nc_endpt *endpt, struct nc_bind *bind)
{
/* delete any references to this endpoint */
nc_server_config_del_endpt_references(endpt->name);
free(endpt->name);
free(endpt->referenced_endpt_name);
nc_server_config_del_ssh_opts(bind, endpt->opts.ssh);
server_opts.endpt_count--;
if (!server_opts.endpt_count) {
free(server_opts.endpts);
free(server_opts.binds);
server_opts.endpts = NULL;
server_opts.binds = NULL;
} else if (endpt != &server_opts.endpts[server_opts.endpt_count]) {
memcpy(endpt, &server_opts.endpts[server_opts.endpt_count], sizeof *server_opts.endpts);
memcpy(bind, &server_opts.binds[server_opts.endpt_count], sizeof *server_opts.binds);
}
}
static void
nc_server_config_del_cert(struct nc_cert_grouping *certs, struct nc_certificate *cert)
{
free(cert->name);
free(cert->data);
certs->cert_count--;
if (!certs->cert_count) {
free(certs->certs);
certs->certs = NULL;
} else if (cert != &certs->certs[certs->cert_count]) {
memcpy(cert, &certs->certs[certs->cert_count], sizeof *certs->certs);
}
}
static void
nc_server_config_del_certs(struct nc_cert_grouping *certs_grp)
{
uint16_t i;
if (certs_grp->store == NC_STORE_LOCAL) {
for (i = 0; i < certs_grp->cert_count; i++) {
free(certs_grp->certs[i].name);
free(certs_grp->certs[i].data);
}
free(certs_grp->certs);
certs_grp->certs = NULL;
} else if (certs_grp->store == NC_STORE_TRUSTSTORE) {
free(certs_grp->ts_ref);
}
}
static void
nc_server_config_del_ctn(struct nc_server_tls_opts *opts, struct nc_ctn *ctn)
{
struct nc_ctn *iter;
free(ctn->name);
free(ctn->fingerprint);
if (opts->ctn == ctn) {
/* it's the first in the list */
opts->ctn = ctn->next;
free(ctn);
return;
}
for (iter = opts->ctn; iter; iter = iter->next) {
if (iter->next == ctn) {
/* found the ctn */
break;
}
}
if (!iter) {
ERRINT;
return;
}
iter->next = ctn->next;
free(ctn);
}
static void
nc_server_config_del_ctns(struct nc_server_tls_opts *opts)
{
struct nc_ctn *cur, *next;
for (cur = opts->ctn; cur; cur = next) {
next = cur->next;
free(cur->name);
free(cur->fingerprint);
free(cur);
}
opts->ctn = NULL;
}
static void
nc_server_config_del_tls_opts(struct nc_bind *bind, struct nc_server_tls_opts *opts)
{
if (bind) {
free(bind->address);
if (bind->sock > -1) {
close(bind->sock);
}
}
if (opts->store == NC_STORE_LOCAL) {
free(opts->pubkey_data);
free(opts->privkey_data);
free(opts->cert_data);
} else if (opts->store == NC_STORE_KEYSTORE) {
free(opts->key_ref);
free(opts->cert_ref);
}
nc_server_config_del_certs(&opts->ca_certs);
nc_server_config_del_certs(&opts->ee_certs);
nc_server_config_del_ctns(opts);
free(opts->ciphers);
free(opts);
}
static void
nc_server_config_del_endpt_tls(struct nc_endpt *endpt, struct nc_bind *bind)
{
/* delete any references to this endpoint */
nc_server_config_del_endpt_references(endpt->name);
free(endpt->name);
free(endpt->referenced_endpt_name);
nc_server_config_del_tls_opts(bind, endpt->opts.tls);
server_opts.endpt_count--;
if (!server_opts.endpt_count) {
free(server_opts.endpts);
free(server_opts.binds);
server_opts.endpts = NULL;
server_opts.binds = NULL;
} else if (endpt != &server_opts.endpts[server_opts.endpt_count]) {
memcpy(endpt, &server_opts.endpts[server_opts.endpt_count], sizeof *server_opts.endpts);
memcpy(bind, &server_opts.binds[server_opts.endpt_count], sizeof *server_opts.binds);
}
}
#endif /* NC_ENABLED_SSH_TLS */
static void
nc_server_config_ch_del_endpt(struct nc_ch_client *ch_client, struct nc_ch_endpt *ch_endpt)
{
free(ch_endpt->name);
#ifdef NC_ENABLED_SSH_TLS
free(ch_endpt->src_addr);
free(ch_endpt->dst_addr);
if (ch_endpt->sock_pending > -1) {
close(ch_endpt->sock_pending);
ch_endpt->sock_pending = -1;
}
free(ch_endpt->referenced_endpt_name);
#endif /* NC_ENABLED_SSH_TLS */
switch (ch_endpt->ti) {
#ifdef NC_ENABLED_SSH_TLS
case NC_TI_SSH:
nc_server_config_del_ssh_opts(NULL, ch_endpt->opts.ssh);
break;
case NC_TI_TLS:
nc_server_config_del_tls_opts(NULL, ch_endpt->opts.tls);
break;
#endif /* NC_ENABLED_SSH_TLS */
default:
ERRINT;
break;
}
ch_client->ch_endpt_count--;
if (!ch_client->ch_endpt_count) {
free(ch_client->ch_endpts);
ch_client->ch_endpts = NULL;
}
}
static void
nc_server_config_destroy_ch_client(struct nc_ch_client *ch_client)
{
pthread_t tid;
uint16_t i, ch_endpt_count;
/* CH COND LOCK */
pthread_mutex_lock(&ch_client->thread_data->cond_lock);
if (ch_client->thread_data->thread_running) {
ch_client->thread_data->thread_running = 0;
pthread_cond_signal(&ch_client->thread_data->cond);
/* CH COND UNLOCK */
pthread_mutex_unlock(&ch_client->thread_data->cond_lock);
/* get tid */
tid = ch_client->tid;
/* wait for the thread to terminate */
pthread_join(tid, NULL);
} else {
/* CH COND UNLOCK */
pthread_mutex_unlock(&ch_client->thread_data->cond_lock);
}
/* free its members */
free(ch_client->name);
ch_endpt_count = ch_client->ch_endpt_count;
for (i = 0; i < ch_endpt_count; i++) {
nc_server_config_ch_del_endpt(ch_client, &ch_client->ch_endpts[i]);
}
}
static void
nc_server_config_ch_del_client(const struct lyd_node *node)
{
struct nc_ch_client client, *ch_client;
/* WR LOCK */
pthread_rwlock_wrlock(&server_opts.ch_client_lock);
if (nc_server_config_get_ch_client(node, &ch_client)) {
/* WR UNLOCK */
pthread_rwlock_unlock(&server_opts.ch_client_lock);
ERR(NULL, "Call-home client \"%s\" not found.", lyd_get_value(lyd_child(node)));
return;
}
/* copy the client we want to delete into a local variable */
memcpy(&client, ch_client, sizeof *ch_client);
/* delete the client */
server_opts.ch_client_count--;
if (!server_opts.ch_client_count) {
free(server_opts.ch_clients);
server_opts.ch_clients = NULL;
} else {
memcpy(ch_client, &server_opts.ch_clients[server_opts.ch_client_count], sizeof *server_opts.ch_clients);
}
/* WR UNLOCK */
pthread_rwlock_unlock(&server_opts.ch_client_lock);
nc_server_config_destroy_ch_client(&client);
}
/* presence container */
int
nc_server_config_listen(const struct lyd_node *node, NC_OPERATION op)
{
uint16_t i, endpt_count;
(void) node;
assert(op == NC_OP_CREATE || op == NC_OP_DELETE);
if (op == NC_OP_DELETE) {
endpt_count = server_opts.endpt_count;
for (i = 0; i < endpt_count; i++) {
switch (server_opts.endpts[i].ti) {
#ifdef NC_ENABLED_SSH_TLS
case NC_TI_SSH:
nc_server_config_del_endpt_ssh(&server_opts.endpts[i], &server_opts.binds[i]);
break;
case NC_TI_TLS:
nc_server_config_del_endpt_tls(&server_opts.endpts[i], &server_opts.binds[i]);
break;
#endif /* NC_ENABLED_SSH_TLS */
case NC_TI_UNIX:
break;
case NC_TI_NONE:
case NC_TI_FD:
ERRINT;
return 1;
}
}
}
return 0;
}
int
nc_server_config_ch(const struct lyd_node *node, NC_OPERATION op)
{
uint16_t i, ch_client_count;
struct nc_ch_client *ch_clients;
(void) node;
/* don't do anything if we're not deleting */
if (op != NC_OP_DELETE) {
return 0;
}
/* WR LOCK */
pthread_rwlock_wrlock(&server_opts.ch_client_lock);
ch_client_count = server_opts.ch_client_count;
ch_clients = server_opts.ch_clients;
/* remove them from the server opts */
server_opts.ch_client_count = 0;
server_opts.ch_clients = NULL;
/* UNLOCK */
pthread_rwlock_unlock(&server_opts.ch_client_lock);
for (i = 0; i < ch_client_count; i++) {
/* now destroy each client */
nc_server_config_destroy_ch_client(&ch_clients[i]);
}
free(ch_clients);
return 0;
}
/* default leaf */
static int
nc_server_config_idle_timeout(const struct lyd_node *node, NC_OPERATION op)
{
struct nc_ch_client *ch_client = NULL;
assert(!strcmp(LYD_NAME(node), "idle-timeout"));
if (is_ch(node)) {
/* call-home idle timeout */
if (nc_server_config_get_ch_client_with_lock(node, &ch_client)) {
/* to avoid unlock on fail */
return 1;
}
if ((op == NC_OP_CREATE) || (op == NC_OP_REPLACE)) {
ch_client->idle_timeout = ((struct lyd_node_term *)node)->value.uint16;
} else if (op == NC_OP_DELETE) {
ch_client->idle_timeout = 180;
}
nc_ch_client_unlock(ch_client);
} else {
/* listen idle timeout */
if ((op == NC_OP_CREATE) || (op == NC_OP_REPLACE)) {
server_opts.idle_timeout = ((struct lyd_node_term *)node)->value.uint16;
} else {
/* default value */
server_opts.idle_timeout = 180;
}
}
return 0;
}
static int
nc_server_config_create_bind(void)
{
int ret = 0;
void *tmp;
tmp = realloc(server_opts.binds, (server_opts.endpt_count + 1) * sizeof *server_opts.binds);
NC_CHECK_ERRMEM_GOTO(!tmp, ret = 1, cleanup);
server_opts.binds = tmp;
memset(&server_opts.binds[server_opts.endpt_count], 0, sizeof *server_opts.binds);
server_opts.binds[server_opts.endpt_count].sock = -1;
cleanup:
return ret;
}
static int
nc_server_config_create_endpoint(const struct lyd_node *node)
{
if (nc_server_config_create_bind()) {
return 1;
}
node = lyd_child(node);
assert(!strcmp(LYD_NAME(node), "name"));
return nc_server_config_realloc(lyd_get_value(node), (void **)&server_opts.endpts, sizeof *server_opts.endpts,
&server_opts.endpt_count);
}
static int
nc_server_config_ch_create_endpoint(const struct lyd_node *node, struct nc_ch_client *ch_client)
{
node = lyd_child(node);
assert(!strcmp(LYD_NAME(node), "name"));
return nc_server_config_realloc(lyd_get_value(node), (void **)&ch_client->ch_endpts, sizeof *ch_client->ch_endpts,
&ch_client->ch_endpt_count);
}
/* list */
static int
nc_server_config_endpoint(const struct lyd_node *node, NC_OPERATION op)
{
int ret = 0;
struct nc_endpt *endpt;
struct nc_bind *bind;
struct nc_ch_endpt *ch_endpt;
struct nc_ch_client *ch_client = NULL;
assert(!strcmp(LYD_NAME(node), "endpoint"));
if (is_listen(node)) {
/* listen */
if (op == NC_OP_CREATE) {
ret = nc_server_config_create_endpoint(node);
if (ret) {
goto cleanup;
}
} else if (op == NC_OP_DELETE) {
/* free all children */
if (nc_server_config_get_endpt(node, &endpt, &bind)) {
ret = 1;
goto cleanup;
}
switch (endpt->ti) {
#ifdef NC_ENABLED_SSH_TLS
case NC_TI_SSH:
nc_server_config_del_endpt_ssh(endpt, bind);
break;
case NC_TI_TLS:
nc_server_config_del_endpt_tls(endpt, bind);
break;
#endif /* NC_ENABLED_SSH_TLS */
case NC_TI_UNIX:
break;
case NC_TI_NONE:
case NC_TI_FD:
ERRINT;
ret = 1;
goto cleanup;
}
}
} else if (is_ch(node)) {
/* LOCK */
if (nc_server_config_get_ch_client_with_lock(node, &ch_client)) {
/* to avoid unlock on fail */
return 1;
}
if (op == NC_OP_CREATE) {
ret = nc_server_config_ch_create_endpoint(node, ch_client);
if (ret) {
goto cleanup;
}
/* init ch sock */
ch_client->ch_endpts[ch_client->ch_endpt_count - 1].sock_pending = -1;
} else if (op == NC_OP_DELETE) {
if (nc_server_config_get_ch_endpt(node, ch_client, &ch_endpt)) {
ret = 1;
goto cleanup;
}
nc_server_config_ch_del_endpt(ch_client, ch_endpt);
}
}
cleanup:
if (is_ch(node)) {
/* UNLOCK */
nc_ch_client_unlock(ch_client);
}
return ret;
}
#ifdef NC_ENABLED_SSH_TLS
static int
nc_server_config_create_ssh(struct nc_endpt *endpt)
{
endpt->ti = NC_TI_SSH;
endpt->opts.ssh = calloc(1, sizeof(struct nc_server_ssh_opts));
NC_CHECK_ERRMEM_RET(!endpt->opts.ssh, 1);
return 0;
}
static int
nc_server_config_ch_create_ssh(struct nc_ch_endpt *ch_endpt)
{
ch_endpt->ti = NC_TI_SSH;
ch_endpt->opts.ssh = calloc(1, sizeof(struct nc_server_ssh_opts));
NC_CHECK_ERRMEM_RET(!ch_endpt->opts.ssh, 1);
return 0;
}
/* NP container */
static int
nc_server_config_ssh(const struct lyd_node *node, NC_OPERATION op)
{
struct nc_endpt *endpt;
struct nc_bind *bind;
struct nc_ch_endpt *ch_endpt;
struct nc_ch_client *ch_client = NULL;
int ret = 0;
assert(!strcmp(LYD_NAME(node), "ssh"));
if (is_listen(node)) {
if (nc_server_config_get_endpt(node, &endpt, &bind)) {
ret = 1;
goto cleanup;
}
if (op == NC_OP_CREATE) {
ret = nc_server_config_create_ssh(endpt);
if (ret) {
goto cleanup;
}
} else if (op == NC_OP_DELETE) {
nc_server_config_del_ssh_opts(bind, endpt->opts.ssh);
}
} else {
/* LOCK */
if (nc_server_config_get_ch_client_with_lock(node, &ch_client)) {
/* to avoid unlock on fail */
return 1;
}
if (nc_server_config_get_ch_endpt(node, ch_client, &ch_endpt)) {
ret = 1;
goto cleanup;
}
if (op == NC_OP_CREATE) {
ret = nc_server_config_ch_create_ssh(ch_endpt);
if (ret) {
goto cleanup;
}
} else if (op == NC_OP_DELETE) {
nc_server_config_del_ssh_opts(NULL, ch_endpt->opts.ssh);
}
}
cleanup:
if (is_ch(node)) {
/* UNLOCK */
nc_ch_client_unlock(ch_client);
}
return ret;
}
static int
nc_server_config_create_tls(struct nc_endpt *endpt)
{
endpt->ti = NC_TI_TLS;
endpt->opts.tls = calloc(1, sizeof *endpt->opts.tls);
NC_CHECK_ERRMEM_RET(!endpt->opts.tls, 1);
return 0;
}
static int
nc_server_config_ch_create_tls(struct nc_ch_endpt *ch_endpt)
{
ch_endpt->ti = NC_TI_TLS;
ch_endpt->opts.tls = calloc(1, sizeof(struct nc_server_tls_opts));
NC_CHECK_ERRMEM_RET(!ch_endpt->opts.tls, 1);
return 0;
}
static int
nc_server_config_tls(const struct lyd_node *node, NC_OPERATION op)
{
struct nc_endpt *endpt;
struct nc_bind *bind;
struct nc_ch_endpt *ch_endpt;
struct nc_ch_client *ch_client = NULL;
int ret = 0;
assert(!strcmp(LYD_NAME(node), "tls"));
if (is_listen(node)) {
if (nc_server_config_get_endpt(node, &endpt, &bind)) {
ret = 1;
goto cleanup;
}
if (op == NC_OP_CREATE) {
ret = nc_server_config_create_tls(endpt);
if (ret) {
goto cleanup;
}
} else if (op == NC_OP_DELETE) {
nc_server_config_del_tls_opts(bind, endpt->opts.tls);
}
} else {
/* LOCK */
if (nc_server_config_get_ch_client_with_lock(node, &ch_client)) {
/* to avoid unlock on fail */
return 1;
}
if (nc_server_config_get_ch_endpt(node, ch_client, &ch_endpt)) {
ret = 1;
goto cleanup;
}
if (op == NC_OP_CREATE) {
ret = nc_server_config_ch_create_tls(ch_endpt);
if (ret) {
goto cleanup;
}
} else if (op == NC_OP_DELETE) {
nc_server_config_del_tls_opts(NULL, ch_endpt->opts.tls);
}
}
cleanup:
if (is_ch(node)) {
/* UNLOCK */
nc_ch_client_unlock(ch_client);
}
return ret;
}
/* leaf */
static int
nc_server_config_local_address(const struct lyd_node *node, NC_OPERATION op)
{
int ret = 0;
struct nc_endpt *endpt;
struct nc_bind *bind;
struct nc_ch_client *ch_client = NULL;
struct nc_ch_endpt *ch_endpt;
assert(!strcmp(LYD_NAME(node), "local-address"));
if (is_listen(node) && equal_parent_name(node, 1, "tcp-server-parameters")) {
if (nc_server_config_get_endpt(node, &endpt, &bind)) {
ret = 1;
goto cleanup;
}
free(bind->address);
bind->address = strdup(lyd_get_value(node));
NC_CHECK_ERRMEM_GOTO(!bind->address, ret = 1, cleanup);
ret = nc_server_set_address_port(endpt, bind, lyd_get_value(node), 0);
if (ret) {
goto cleanup;
}
} else if (is_ch(node) && equal_parent_name(node, 1, "tcp-client-parameters")) {
/* LOCK */
if (nc_server_config_get_ch_client_with_lock(node, &ch_client)) {
/* to avoid unlock on fail */
return 1;
}
if (nc_server_config_get_ch_endpt(node, ch_client, &ch_endpt)) {
ret = 1;
goto cleanup;
}
if ((op == NC_OP_CREATE) || (op == NC_OP_REPLACE)) {
free(ch_endpt->src_addr);
ch_endpt->src_addr = strdup(lyd_get_value(node));
NC_CHECK_ERRMEM_GOTO(!ch_endpt->src_addr, ret = 1, cleanup);
} else if (op == NC_OP_DELETE) {
free(ch_endpt->src_addr);
ch_endpt->src_addr = NULL;
}
}
cleanup:
if (is_ch(node) && equal_parent_name(node, 1, "tcp-client-parameters")) {
/* UNLOCK */
nc_ch_client_unlock(ch_client);
}
return ret;
}
/* leaf with default value */
static int
nc_server_config_local_port(const struct lyd_node *node, NC_OPERATION op)
{
int ret = 0;
struct nc_endpt *endpt;
struct nc_bind *bind;
struct nc_ch_client *ch_client = NULL;
struct nc_ch_endpt *ch_endpt;
assert(!strcmp(LYD_NAME(node), "local-port"));
if (is_listen(node) && equal_parent_name(node, 1, "tcp-server-parameters")) {
if (nc_server_config_get_endpt(node, &endpt, &bind)) {
ret = 1;
goto cleanup;
}
if ((op == NC_OP_CREATE) || (op == NC_OP_REPLACE)) {
bind->port = ((struct lyd_node_term *)node)->value.uint16;
} else {
/* delete -> set to default */
bind->port = 0;
}
ret = nc_server_set_address_port(endpt, bind, NULL, bind->port);
if (ret) {
goto cleanup;
}
} else if (is_ch(node) && equal_parent_name(node, 1, "tcp-client-parameters")) {
/* LOCK */
if (nc_server_config_get_ch_client_with_lock(node, &ch_client)) {
/* to avoid unlock on fail */
return 1;
}
if (nc_server_config_get_ch_endpt(node, ch_client, &ch_endpt)) {
ret = 1;
goto cleanup;
}
if ((op == NC_OP_CREATE) || (op == NC_OP_REPLACE)) {
ch_endpt->src_port = ((struct lyd_node_term *)node)->value.uint16;
} else if (op == NC_OP_DELETE) {
/* delete -> set to default */
ch_endpt->src_port = 0;
}
}
cleanup:
if (is_ch(node) && equal_parent_name(node, 1, "tcp-client-parameters")) {
/* UNLOCK */
nc_ch_client_unlock(ch_client);
}
return ret;
}
/* NP container */
static int
nc_server_config_keepalives(const struct lyd_node *node, NC_OPERATION op)
{
int ret = 0;
struct nc_endpt *endpt;
struct nc_bind *bind;
struct nc_ch_endpt *ch_endpt;
struct nc_ch_client *ch_client = NULL;
assert(!strcmp(LYD_NAME(node), "keepalives"));
if (is_listen(node) && equal_parent_name(node, 1, "tcp-server-parameters")) {
if (nc_server_config_get_endpt(node, &endpt, &bind)) {
ret = 1;
goto cleanup;
}
if (op == NC_OP_CREATE) {
endpt->ka.enabled = 1;
} else {
endpt->ka.enabled = 0;
}
} else if (is_ch(node) && equal_parent_name(node, 1, "tcp-client-parameters")) {
/* LOCK */
if (nc_server_config_get_ch_client_with_lock(node, &ch_client)) {
/* to avoid unlock on fail */
return 1;
}
if (nc_server_config_get_ch_endpt(node, ch_client, &ch_endpt)) {
ret = 1;
goto cleanup;
}
if (op == NC_OP_CREATE) {
ch_endpt->ka.enabled = 1;
} else {
ch_endpt->ka.enabled = 0;
}
}
cleanup:
if (is_ch(node) && equal_parent_name(node, 1, "tcp-client-parameters")) {
/* UNLOCK */
nc_ch_client_unlock(ch_client);
}
return ret;
}
/* leaf with default value */
static int
nc_server_config_idle_time(const struct lyd_node *node, NC_OPERATION op)
{
int ret = 0;
struct nc_endpt *endpt;
struct nc_bind *bind;
struct nc_ch_endpt *ch_endpt;
struct nc_ch_client *ch_client = NULL;
assert(!strcmp(LYD_NAME(node), "idle-time"));
if (is_listen(node) && equal_parent_name(node, 2, "tcp-server-parameters")) {
if (nc_server_config_get_endpt(node, &endpt, &bind)) {
ret = 1;
goto cleanup;
}
if ((op == NC_OP_CREATE) || (op == NC_OP_REPLACE)) {
endpt->ka.idle_time = ((struct lyd_node_term *)node)->value.uint16;
} else {
/* delete -> set to default */
endpt->ka.idle_time = 7200;
}
} else if (is_ch(node) && equal_parent_name(node, 2, "tcp-client-parameters")) {
/* LOCK */
if (nc_server_config_get_ch_client_with_lock(node, &ch_client)) {
/* to avoid unlock on fail */
return 1;
}
if (nc_server_config_get_ch_endpt(node, ch_client, &ch_endpt)) {
ret = 1;
goto cleanup;
}
if ((op == NC_OP_CREATE) || (op == NC_OP_REPLACE)) {
ch_endpt->ka.idle_time = ((struct lyd_node_term *)node)->value.uint16;
} else {
/* delete -> set to default */
ch_endpt->ka.idle_time = 7200;
}
}
cleanup:
if (is_ch(node) && equal_parent_name(node, 2, "tcp-client-parameters")) {
/* UNLOCK */
nc_ch_client_unlock(ch_client);
}
return ret;
}
/* leaf with default value */
static int
nc_server_config_max_probes(const struct lyd_node *node, NC_OPERATION op)
{
int ret = 0;
struct nc_endpt *endpt;
struct nc_bind *bind;
struct nc_ch_endpt *ch_endpt;
struct nc_ch_client *ch_client = NULL;
assert(!strcmp(LYD_NAME(node), "max-probes"));
if (is_listen(node) && equal_parent_name(node, 2, "tcp-server-parameters")) {
if (nc_server_config_get_endpt(node, &endpt, &bind)) {
ret = 1;
goto cleanup;
}
if ((op == NC_OP_CREATE) || (op == NC_OP_REPLACE)) {
endpt->ka.max_probes = ((struct lyd_node_term *)node)->value.uint16;
} else {
/* delete -> set to default */
endpt->ka.max_probes = 9;
}
} else if (is_ch(node) && equal_parent_name(node, 2, "tcp-client-parameters")) {
/* LOCK */
if (nc_server_config_get_ch_client_with_lock(node, &ch_client)) {
/* to avoid unlock on fail */
return 1;
}
if (nc_server_config_get_ch_endpt(node, ch_client, &ch_endpt)) {
ret = 1;
goto cleanup;
}
if ((op == NC_OP_CREATE) || (op == NC_OP_REPLACE)) {
ch_endpt->ka.max_probes = ((struct lyd_node_term *)node)->value.uint16;
} else {
/* delete -> set to default */
ch_endpt->ka.max_probes = 9;
}
}
cleanup:
if (is_ch(node) && equal_parent_name(node, 2, "tcp-client-parameters")) {
/* UNLOCK */
nc_ch_client_unlock(ch_client);
}
return ret;
}
/* leaf with default value */
static int
nc_server_config_probe_interval(const struct lyd_node *node, NC_OPERATION op)
{
int ret = 0;
struct nc_endpt *endpt;
struct nc_bind *bind;
struct nc_ch_endpt *ch_endpt;
struct nc_ch_client *ch_client = NULL;
assert(!strcmp(LYD_NAME(node), "probe-interval"));
if (is_listen(node) && equal_parent_name(node, 2, "tcp-server-parameters")) {
if (nc_server_config_get_endpt(node, &endpt, &bind)) {
ret = 1;
goto cleanup;
}
if ((op == NC_OP_CREATE) || (op == NC_OP_REPLACE)) {
endpt->ka.probe_interval = ((struct lyd_node_term *)node)->value.uint16;
} else {
/* delete -> set to default */
endpt->ka.probe_interval = 75;
}
} else if (is_ch(node) && equal_parent_name(node, 2, "tcp-client-parameters")) {
/* LOCK */
if (nc_server_config_get_ch_client_with_lock(node, &ch_client)) {
/* to avoid unlock on fail */
return 1;
}
if (nc_server_config_get_ch_endpt(node, ch_client, &ch_endpt)) {
ret = 1;
goto cleanup;
}
if ((op == NC_OP_CREATE) || (op == NC_OP_REPLACE)) {
ch_endpt->ka.probe_interval = ((struct lyd_node_term *)node)->value.uint16;
} else {
/* delete -> set to default */
ch_endpt->ka.probe_interval = 75;
}
}
cleanup:
if (is_ch(node) && equal_parent_name(node, 2, "tcp-client-parameters")) {
/* UNLOCK */
nc_ch_client_unlock(ch_client);
}
return ret;
}
static int
nc_server_config_create_host_key(const struct lyd_node *node, struct nc_server_ssh_opts *opts)
{
node = lyd_child(node);
assert(!strcmp(LYD_NAME(node), "name"));
return nc_server_config_realloc(lyd_get_value(node), (void **)&opts->hostkeys, sizeof *opts->hostkeys, &opts->hostkey_count);
}
/* list */
static int
nc_server_config_host_key(const struct lyd_node *node, NC_OPERATION op)
{
int ret = 0;
struct nc_hostkey *hostkey;
struct nc_server_ssh_opts *opts;
struct nc_ch_client *ch_client = NULL;
assert(!strcmp(LYD_NAME(node), "host-key"));
if (equal_parent_name(node, 1, "server-identity")) {
/* LOCK */
if (is_ch(node) && nc_server_config_get_ch_client_with_lock(node, &ch_client)) {
/* to avoid unlock on fail */
return 1;
}
if (nc_server_config_get_ssh_opts(node, ch_client, &opts)) {
ret = 1;
goto cleanup;
}
if (op == NC_OP_CREATE) {
ret = nc_server_config_create_host_key(node, opts);
if (ret) {
goto cleanup;
}
} else if (op == NC_OP_DELETE) {
if (nc_server_config_get_hostkey(node, ch_client, &hostkey)) {
ret = 1;
goto cleanup;
}
nc_server_config_del_hostkey(opts, hostkey);
}
}
cleanup:
if (is_ch(node) && equal_parent_name(node, 1, "server-identity")) {
/* UNLOCK */
nc_ch_client_unlock(ch_client);
}
return ret;
}
/* mandatory leaf */
static int
nc_server_config_public_key_format(const struct lyd_node *node, NC_OPERATION op)
{
int ret = 0;
const char *format;
NC_PUBKEY_FORMAT pubkey_type;
struct nc_public_key *pubkey;
struct nc_hostkey *hostkey;
struct nc_server_tls_opts *opts;
struct nc_ch_client *ch_client = NULL;
assert(!strcmp(LYD_NAME(node), "public-key-format"));
/* LOCK */
if (is_ch(node) && nc_server_config_get_ch_client_with_lock(node, &ch_client)) {
/* to avoid unlock on fail */
return 1;
}
format = ((struct lyd_node_term *)node)->value.ident->name;
if (!strcmp(format, "ssh-public-key-format")) {
pubkey_type = NC_PUBKEY_FORMAT_SSH;
} else if (!strcmp(format, "subject-public-key-info-format")) {
pubkey_type = NC_PUBKEY_FORMAT_X509;
} else {
ERR(NULL, "Public key format (%s) not supported.", format);
ret = 1;
goto cleanup;
}
if (is_ssh(node) && equal_parent_name(node, 4, "server-identity")) {
/* SSH hostkey public key fmt */
if (nc_server_config_get_hostkey(node, ch_client, &hostkey)) {
ret = 1;
goto cleanup;
}
if ((op == NC_OP_CREATE) || (op == NC_OP_REPLACE)) {
hostkey->key.pubkey_type = pubkey_type;
}
} else if (is_ssh(node) && equal_parent_name(node, 6, "client-authentication")) {
/* SSH client auth public key fmt */
if (nc_server_config_get_pubkey(node, ch_client, &pubkey)) {
ret = 1;
goto cleanup;
}
if ((op == NC_OP_CREATE) || (op == NC_OP_REPLACE)) {
pubkey->type = pubkey_type;
}
} else if (is_tls(node) && equal_parent_name(node, 3, "server-identity")) {
/* TLS server-identity */
if (nc_server_config_get_tls_opts(node, ch_client, &opts)) {
ret = 1;
goto cleanup;
}
if ((op == NC_OP_CREATE) || (op == NC_OP_REPLACE)) {
opts->pubkey_type = pubkey_type;
}
}
cleanup:
if (is_ch(node)) {
/* UNLOCK */
nc_ch_client_unlock(ch_client);
}
return ret;
}
static int
nc_server_config_create_auth_key_public_key_list(const struct lyd_node *node, struct nc_auth_client *auth_client)
{
assert(!strcmp(LYD_NAME(node), "public-key"));
node = lyd_child(node);
assert(!strcmp(LYD_NAME(node), "name"));
return nc_server_config_realloc(lyd_get_value(node), (void **)&auth_client->pubkeys, sizeof *auth_client->pubkeys,
&auth_client->pubkey_count);
}
static int
nc_server_config_replace_auth_key_public_key_leaf(const struct lyd_node *node, struct nc_public_key *pubkey)
{
free(pubkey->data);
pubkey->data = strdup(lyd_get_value(node));
NC_CHECK_ERRMEM_RET(!pubkey->data, 1);
return 0;
}
static int
nc_server_config_replace_host_key_public_key(const struct lyd_node *node, struct nc_hostkey *hostkey)
{
free(hostkey->key.pubkey_data);
hostkey->key.pubkey_data = strdup(lyd_get_value(node));
NC_CHECK_ERRMEM_RET(!hostkey->key.pubkey_data, 1);
return 0;
}
static int
nc_server_config_tls_replace_server_public_key(const struct lyd_node *node, struct nc_server_tls_opts *opts)
{
free(opts->pubkey_data);
opts->pubkey_data = strdup(lyd_get_value(node));
NC_CHECK_ERRMEM_RET(!opts->pubkey_data, 1);
return 0;
}
static int
nc_server_config_public_key(const struct lyd_node *node, NC_OPERATION op)
{
int ret = 0;
struct nc_hostkey *hostkey;
struct nc_auth_client *auth_client;
struct nc_public_key *pubkey;
struct nc_server_tls_opts *opts;
struct nc_ch_client *ch_client = NULL;
assert(!strcmp(LYD_NAME(node), "public-key"));
/* LOCK */
if (is_ch(node) && nc_server_config_get_ch_client_with_lock(node, &ch_client)) {
/* to avoid unlock on fail */
return 1;
}
if (is_ssh(node) && equal_parent_name(node, 3, "host-key")) {
/* server's public-key, mandatory leaf */
if (nc_server_config_get_hostkey(node, ch_client, &hostkey)) {
ret = 1;
goto cleanup;
}
/* the public key must not be SubjectPublicKeyInfoFormat, as per the ietf-netconf-server model */
if (nc_is_pk_subject_public_key_info(lyd_get_value(node))) {
ERR(NULL, "Using Public Key in the SubjectPublicKeyInfo format as an SSH hostkey is forbidden!");
ret = 1;
goto cleanup;
}
if ((op == NC_OP_CREATE) || (op == NC_OP_REPLACE)) {
/* set to local */
hostkey->store = NC_STORE_LOCAL;
ret = nc_server_config_replace_host_key_public_key(node, hostkey);
if (ret) {
goto cleanup;
}
}
} else if (is_ssh(node) && equal_parent_name(node, 5, "client-authentication")) {
/* client auth pubkeys, list */
if (nc_server_config_get_auth_client(node, ch_client, &auth_client)) {
ret = 1;
goto cleanup;
}
if (op == NC_OP_CREATE) {
/* set to local */
auth_client->store = NC_STORE_LOCAL;
ret = nc_server_config_create_auth_key_public_key_list(node, auth_client);
if (ret) {
goto cleanup;
}
} else if (op == NC_OP_DELETE) {
if (nc_server_config_get_pubkey(node, ch_client, &pubkey)) {
ret = 1;
goto cleanup;
}
nc_server_config_del_auth_client_pubkey(auth_client, pubkey);
}
} else if (is_ssh(node) && equal_parent_name(node, 6, "client-authentication")) {
/* client auth pubkey, leaf */
if (nc_server_config_get_pubkey(node, ch_client, &pubkey)) {
ret = 1;
goto cleanup;
}
/* the public key must not be SubjectPublicKeyInfoFormat, as per the ietf-netconf-server model */
if (nc_is_pk_subject_public_key_info(lyd_get_value(node))) {
ERR(NULL, "Using Public Key in the SubjectPublicKeyInfo format as an SSH user's key is forbidden!");
ret = 1;
goto cleanup;
}
if ((op == NC_OP_CREATE) || (op == NC_OP_REPLACE)) {
ret = nc_server_config_replace_auth_key_public_key_leaf(node, pubkey);
if (ret) {
goto cleanup;
}
} else if (op == NC_OP_DELETE) {
free(pubkey->data);
pubkey->data = NULL;
}
} else if (is_tls(node) && equal_parent_name(node, 3, "server-identity")) {
/* TLS server-identity */
if (nc_server_config_get_tls_opts(node, ch_client, &opts)) {
ret = 1;
goto cleanup;
}
/* the public key must be SubjectPublicKeyInfoFormat, as per the ietf-netconf-server model */
if (!nc_is_pk_subject_public_key_info(lyd_get_value(node))) {
ERR(NULL, "TLS server certificate's Public Key must be in the SubjectPublicKeyInfo format!");
ret = 1;
goto cleanup;
}
if ((op == NC_OP_CREATE) || (op == NC_OP_REPLACE)) {
/* set to local */
opts->store = NC_STORE_LOCAL;
ret = nc_server_config_tls_replace_server_public_key(node, opts);
if (ret) {
goto cleanup;
}
}
}
cleanup:
if (is_ch(node)) {
/* UNLOCK */
nc_ch_client_unlock(ch_client);
}
return ret;
}
/* leaf */
static int
nc_server_config_private_key_format(const struct lyd_node *node, NC_OPERATION op)
{
int ret = 0;
const char *format;
NC_PRIVKEY_FORMAT privkey_type;
struct nc_hostkey *hostkey;
struct nc_server_tls_opts *opts;
struct nc_ch_client *ch_client = NULL;
(void) op;
assert(!strcmp(LYD_NAME(node), "private-key-format"));
/* LOCK */
if (is_ch(node) && nc_server_config_get_ch_client_with_lock(node, &ch_client)) {
/* to avoid unlock on fail */
return 1;
}
format = ((struct lyd_node_term *)node)->value.ident->name;
if (!format) {
ret = 1;
goto cleanup;
}
privkey_type = nc_server_config_get_private_key_type(format);
if (privkey_type == NC_PRIVKEY_FORMAT_UNKNOWN) {
ERR(NULL, "Unknown private key format.");
ret = 1;
goto cleanup;
}
if (is_ssh(node)) {
/* ssh */
if (nc_server_config_get_hostkey(node, ch_client, &hostkey)) {
ret = 1;
goto cleanup;
}
hostkey->key.privkey_type = privkey_type;
} else if (is_tls(node)) {
/* tls */
if (nc_server_config_get_tls_opts(node, ch_client, &opts)) {
ret = 1;
goto cleanup;
}
opts->privkey_type = privkey_type;
}
cleanup:
if (is_ch(node)) {
/* UNLOCK */
nc_ch_client_unlock(ch_client);
}
return ret;
}
static int
nc_server_config_cleartext_private_key(const struct lyd_node *node, NC_OPERATION op)
{
int ret = 0;
struct nc_hostkey *hostkey;
struct nc_server_tls_opts *opts;
struct nc_ch_client *ch_client = NULL;
assert(!strcmp(LYD_NAME(node), "cleartext-private-key"));
/* LOCK */
if (is_ch(node) && nc_server_config_get_ch_client_with_lock(node, &ch_client)) {
/* to avoid unlock on fail */
return 1;
}
if (is_ssh(node)) {
/* ssh */
if (nc_server_config_get_hostkey(node, ch_client, &hostkey)) {
ret = 1;
goto cleanup;
}
if ((op == NC_OP_CREATE) || (op == NC_OP_REPLACE)) {
free(hostkey->key.privkey_data);
hostkey->key.privkey_data = strdup(lyd_get_value(node));
NC_CHECK_ERRMEM_GOTO(!hostkey->key.privkey_data, ret = 1, cleanup);
} else {
free(hostkey->key.privkey_data);
hostkey->key.privkey_data = NULL;
}
} else if (is_tls(node)) {
/* tls */
if (nc_server_config_get_tls_opts(node, ch_client, &opts)) {
ret = 1;
goto cleanup;
}
if ((op == NC_OP_CREATE) || (op == NC_OP_REPLACE)) {
free(opts->privkey_data);
opts->privkey_data = strdup(lyd_get_value(node));
NC_CHECK_ERRMEM_GOTO(!opts->privkey_data, ret = 1, cleanup);
} else {
free(opts->privkey_data);
opts->privkey_data = NULL;
}
}
cleanup:
if (is_ch(node)) {
/* UNLOCK */
nc_ch_client_unlock(ch_client);
}
return ret;
}
/* leaf */
static int
nc_server_config_keystore_reference(const struct lyd_node *node, NC_OPERATION op)
{
int ret = 0;
struct nc_hostkey *hostkey;
struct nc_ch_client *ch_client = NULL;
assert(!strcmp(LYD_NAME(node), "central-keystore-reference"));
/* LOCK */
if (is_ch(node) && nc_server_config_get_ch_client_with_lock(node, &ch_client)) {
/* to avoid unlock on fail */
return 1;
}
if (is_ssh(node) && equal_parent_name(node, 3, "server-identity")) {
if (nc_server_config_get_hostkey(node, ch_client, &hostkey)) {
ret = 1;
goto cleanup;
}
if ((op == NC_OP_CREATE) || (op == NC_OP_REPLACE)) {
/* set to keystore */
hostkey->store = NC_STORE_KEYSTORE;
free(hostkey->ks_ref);
hostkey->ks_ref = strdup(lyd_get_value(node));
NC_CHECK_ERRMEM_GOTO(!hostkey->ks_ref, ret = 1, cleanup);
} else if (op == NC_OP_DELETE) {
free(hostkey->ks_ref);
hostkey->ks_ref = NULL;
}
}
cleanup:
if (is_ch(node)) {
/* UNLOCK */
nc_ch_client_unlock(ch_client);
}
return ret;
}
static int
nc_server_config_create_auth_client(const struct lyd_node *node, struct nc_server_ssh_opts *opts)
{
node = lyd_child(node);
assert(!strcmp(LYD_NAME(node), "name"));
return nc_server_config_realloc(lyd_get_value(node), (void **)&opts->auth_clients, sizeof *opts->auth_clients, &opts->client_count);
}
/* list */
static int
nc_server_config_user(const struct lyd_node *node, NC_OPERATION op)
{
int ret = 0;
struct nc_auth_client *auth_client;
struct nc_server_ssh_opts *opts;
struct nc_ch_client *ch_client = NULL;
assert(!strcmp(LYD_NAME(node), "user"));
/* LOCK */
if (is_ch(node) && nc_server_config_get_ch_client_with_lock(node, &ch_client)) {
/* to avoid unlock on fail */
return 1;
}
if (nc_server_config_get_ssh_opts(node, ch_client, &opts)) {
ret = 1;
goto cleanup;
}
if (op == NC_OP_CREATE) {
ret = nc_server_config_create_auth_client(node, opts);
if (ret) {
goto cleanup;
}
} else if (op == NC_OP_DELETE) {
if (nc_server_config_get_auth_client(node, ch_client, &auth_client)) {
ret = 1;
goto cleanup;
}
nc_server_config_del_auth_client(opts, auth_client);
}
cleanup:
if (is_ch(node)) {
/* UNLOCK */
nc_ch_client_unlock(ch_client);
}
return ret;
}
static int
nc_server_config_auth_timeout(const struct lyd_node *node, NC_OPERATION op)
{
int ret = 0;
struct nc_server_ssh_opts *opts;
struct nc_ch_client *ch_client = NULL;
assert(!strcmp(LYD_NAME(node), "auth-timeout"));
/* LOCK */
if (is_ch(node) && nc_server_config_get_ch_client_with_lock(node, &ch_client)) {
/* to avoid unlock on fail */
return 1;
}
if (nc_server_config_get_ssh_opts(node, ch_client, &opts)) {
ret = 1;
goto cleanup;
}
if ((op == NC_OP_CREATE) || (op == NC_OP_REPLACE)) {
opts->auth_timeout = ((struct lyd_node_term *)node)->value.uint16;
}
cleanup:
if (is_ch(node)) {
/* UNLOCK */
nc_ch_client_unlock(ch_client);
}
return ret;
}
/* leaf */
static int
nc_server_config_truststore_reference(const struct lyd_node *node, NC_OPERATION op)
{
int ret = 0;
struct nc_auth_client *auth_client;
struct nc_ch_client *ch_client = NULL;
struct nc_server_tls_opts *opts;
struct nc_cert_grouping *certs_grp;
assert(!strcmp(LYD_NAME(node), "central-truststore-reference"));
/* LOCK */
if (is_ch(node) && nc_server_config_get_ch_client_with_lock(node, &ch_client)) {
/* to avoid unlock on fail */
return 1;
}
if (is_ssh(node) && equal_parent_name(node, 1, "public-keys")) {
if (nc_server_config_get_auth_client(node, ch_client, &auth_client)) {
ret = 1;
goto cleanup;
}
if ((op == NC_OP_CREATE) || (op == NC_OP_REPLACE)) {
/* set to truststore */
auth_client->store = NC_STORE_TRUSTSTORE;
free(auth_client->ts_ref);
auth_client->ts_ref = strdup(lyd_get_value(node));
NC_CHECK_ERRMEM_GOTO(!auth_client->ts_ref, ret = 1, cleanup);
} else if (op == NC_OP_DELETE) {
free(auth_client->ts_ref);
auth_client->ts_ref = NULL;
}
} else if (is_tls(node) && (equal_parent_name(node, 1, "ca-certs") || equal_parent_name(node, 1, "ee-certs"))) {
/* ee-certs or ca-certs */
if (nc_server_config_get_tls_opts(node, ch_client, &opts)) {
ret = 1;
goto cleanup;
}
if (equal_parent_name(node, 1, "ca-certs")) {
certs_grp = &opts->ca_certs;
} else {
certs_grp = &opts->ee_certs;
}
if ((op == NC_OP_CREATE) || (op == NC_OP_REPLACE)) {
/* set to truststore */
certs_grp->store = NC_STORE_TRUSTSTORE;
free(certs_grp->ts_ref);
certs_grp->ts_ref = strdup(lyd_get_value(node));
NC_CHECK_ERRMEM_GOTO(!certs_grp->ts_ref, ret = 1, cleanup);
} else if (op == NC_OP_DELETE) {
free(certs_grp->ts_ref);
certs_grp->ts_ref = NULL;
}
}
cleanup:
if (is_ch(node)) {
/* UNLOCK */
nc_ch_client_unlock(ch_client);
}
return ret;
}
static int
nc_server_config_use_system_keys(const struct lyd_node *node, NC_OPERATION op)
{
int ret = 0;
struct nc_auth_client *auth_client;
struct nc_ch_client *ch_client = NULL;
assert(!strcmp(LYD_NAME(node), "use-system-keys"));
/* LOCK */
if (is_ch(node) && nc_server_config_get_ch_client_with_lock(node, &ch_client)) {
/* to avoid unlock on fail */
return 1;
}
if (nc_server_config_get_auth_client(node, ch_client, &auth_client)) {
ret = 1;
goto cleanup;
}
if (op == NC_OP_CREATE) {
auth_client->store = NC_STORE_SYSTEM;
}
cleanup:
if (is_ch(node)) {
/* UNLOCK */
nc_ch_client_unlock(ch_client);
}
return ret;
}
/* leaf */
static int
nc_server_config_password(const struct lyd_node *node, NC_OPERATION op)
{
int ret = 0;
struct nc_auth_client *auth_client;
struct nc_ch_client *ch_client = NULL;
assert(!strcmp(LYD_NAME(node), "password"));
/* LOCK */
if (is_ch(node) && nc_server_config_get_ch_client_with_lock(node, &ch_client)) {
/* to avoid unlock on fail */
return 1;
}
if (nc_server_config_get_auth_client(node, ch_client, &auth_client)) {
ret = 1;
goto cleanup;
}
if ((op == NC_OP_CREATE) || (op == NC_OP_REPLACE)) {
free(auth_client->password);
auth_client->password = strdup(lyd_get_value(node));
NC_CHECK_ERRMEM_GOTO(!auth_client->password, ret = 1, cleanup);
} else {
free(auth_client->password);
auth_client->password = NULL;
}
cleanup:
if (is_ch(node)) {
/* UNLOCK */
nc_ch_client_unlock(ch_client);
}
return ret;
}
static int
nc_server_config_use_system_auth(const struct lyd_node *node, NC_OPERATION op)
{
int ret = 0;
struct nc_auth_client *auth_client;
struct nc_ch_client *ch_client = NULL;
assert(!strcmp(LYD_NAME(node), "use-system-auth"));
/* LOCK */
if (is_ch(node) && nc_server_config_get_ch_client_with_lock(node, &ch_client)) {
/* to avoid unlock on fail */
return 1;
}
if (nc_server_config_get_auth_client(node, ch_client, &auth_client)) {
ret = 1;
goto cleanup;
}
if (op == NC_OP_CREATE) {
auth_client->kb_int_enabled = 1;
} else {
auth_client->kb_int_enabled = 0;
}
cleanup:
if (is_ch(node)) {
/* UNLOCK */
nc_ch_client_unlock(ch_client);
}
return ret;
}
/* leaf */
static int
nc_server_config_none(const struct lyd_node *node, NC_OPERATION op)
{
int ret = 0;
struct nc_auth_client *auth_client;
struct nc_ch_client *ch_client = NULL;
assert(!strcmp(LYD_NAME(node), "none"));
/* LOCK */
if (is_ch(node) && nc_server_config_get_ch_client_with_lock(node, &ch_client)) {
/* to avoid unlock on fail */
return 1;
}
if (nc_server_config_get_auth_client(node, ch_client, &auth_client)) {
ret = 1;
goto cleanup;
}
if (op == NC_OP_CREATE) {
auth_client->none_enabled = 1;
} else {
auth_client->none_enabled = 0;
}
cleanup:
if (is_ch(node)) {
/* UNLOCK */
nc_ch_client_unlock(ch_client);
}
return ret;
}
static int
nc_server_config_delete_substring(const char *haystack, const char *needle, const char delim)
{
size_t needle_len = strlen(needle);
char *substr;
int substr_found = 0, ret = 0;
while ((substr = strstr(haystack, needle))) {
/* iterate over all the substrings */
if (((substr == haystack) && (*(substr + needle_len) == delim)) ||
((substr != haystack) && (*(substr - 1) == delim) && (*(substr + needle_len) == delim))) {
/* either the first element of the string or somewhere in the middle */
memmove(substr, substr + needle_len + 1, strlen(substr + needle_len + 1));
substr_found = 1;
break;
} else if ((*(substr - 1) == delim) && (*(substr + needle_len) == '\0')) {
/* the last element of the string */
*(substr - 1) = '\0';
substr_found = 1;
break;
}
haystack = substr + 1;
}
if (!substr_found) {
ret = 1;
}
return ret;
}
static int
nc_server_config_transport_params(const char *algorithm, char **alg_store, NC_OPERATION op)
{
int ret = 0;
char *alg = NULL;
if (!strncmp(algorithm, "openssh-", 8)) {
/* if the name starts with openssh, convert it to it's original libssh accepted form */
ret = asprintf(&alg, "%s@openssh.com", algorithm + 8);
NC_CHECK_ERRMEM_GOTO(ret == -1, ret = 1; alg = NULL, cleanup);
} else if (!strncmp(algorithm, "libssh-", 7)) {
/* if the name starts with libssh, convert it to it's original libssh accepted form */
ret = asprintf(&alg, "%s@libssh.org", algorithm + 7);
NC_CHECK_ERRMEM_GOTO(ret == -1, ret = 1; alg = NULL, cleanup);
} else {
alg = strdup(algorithm);
NC_CHECK_ERRMEM_GOTO(!alg, ret = 1, cleanup);
}
if ((op == NC_OP_CREATE) || (op == NC_OP_REPLACE)) {
if (!*alg_store) {
/* first call */
*alg_store = strdup(alg);
NC_CHECK_ERRMEM_GOTO(!*alg_store, ret = 1, cleanup);
} else {
/* +1 because of ',' between algorithms */
*alg_store = nc_realloc(*alg_store, strlen(*alg_store) + strlen(alg) + 1 + 1);
NC_CHECK_ERRMEM_GOTO(!*alg_store, ret = 1, cleanup);
strcat(*alg_store, ",");
strcat(*alg_store, alg);
}
} else {
/* delete */
ret = nc_server_config_delete_substring(*alg_store, alg, ',');
if (ret) {
ERR(NULL, "Unable to delete an algorithm (%s), which was not previously added.", alg);
goto cleanup;
}
}
cleanup:
free(alg);
return ret;
}
/* leaf-list */
static int
nc_server_config_host_key_alg(const struct lyd_node *node, NC_OPERATION op)
{
int ret = 0;
const char *alg;
struct nc_server_ssh_opts *opts;
struct nc_ch_client *ch_client = NULL;
assert(!strcmp(LYD_NAME(node), "host-key-alg"));
/* LOCK */
if (is_ch(node) && nc_server_config_get_ch_client_with_lock(node, &ch_client)) {
/* to avoid unlock on fail */
return 1;
}
if (nc_server_config_get_ssh_opts(node, ch_client, &opts)) {
ret = 1;
goto cleanup;
}
/* get the algorithm name and append it to supported algs */
alg = ((struct lyd_node_term *)node)->value.ident->name;
if (nc_server_config_transport_params(alg, &opts->hostkey_algs, op)) {
ret = 1;
goto cleanup;
}
cleanup:
if (is_ch(node)) {
/* UNLOCK */
nc_ch_client_unlock(ch_client);
}
return ret;
}
/* leaf-list */
static int
nc_server_config_kex_alg(const struct lyd_node *node, NC_OPERATION op)
{
int ret = 0;
const char *alg;
struct nc_server_ssh_opts *opts;
struct nc_ch_client *ch_client = NULL;
assert(!strcmp(LYD_NAME(node), "key-exchange-alg"));
/* LOCK */
if (is_ch(node) && nc_server_config_get_ch_client_with_lock(node, &ch_client)) {
/* to avoid unlock on fail */
return 1;
}
if (nc_server_config_get_ssh_opts(node, ch_client, &opts)) {
ret = 1;
goto cleanup;
}
/* get the algorithm name and append it to supported algs */
alg = ((struct lyd_node_term *)node)->value.ident->name;
if (nc_server_config_transport_params(alg, &opts->kex_algs, op)) {
ret = 1;
goto cleanup;
}
cleanup:
if (is_ch(node)) {
/* UNLOCK */
nc_ch_client_unlock(ch_client);
}
return ret;
}
/* leaf-list */
static int
nc_server_config_encryption_alg(const struct lyd_node *node, NC_OPERATION op)
{
int ret = 0;
const char *alg;
struct nc_server_ssh_opts *opts;
struct nc_ch_client *ch_client = NULL;
assert(!strcmp(LYD_NAME(node), "encryption-alg"));
/* LOCK */
if (is_ch(node) && nc_server_config_get_ch_client_with_lock(node, &ch_client)) {
/* to avoid unlock on fail */
return 1;
}
if (nc_server_config_get_ssh_opts(node, ch_client, &opts)) {
ret = 1;
goto cleanup;
}
/* get the algorithm name and append it to supported algs */
alg = ((struct lyd_node_term *)node)->value.ident->name;
if (nc_server_config_transport_params(alg, &opts->encryption_algs, op)) {
ret = 1;
goto cleanup;
}
cleanup:
if (is_ch(node)) {
/* UNLOCK */
nc_ch_client_unlock(ch_client);
}
return ret;
}
/* leaf-list */
static int
nc_server_config_mac_alg(const struct lyd_node *node, NC_OPERATION op)
{
int ret = 0;
const char *alg;
struct nc_server_ssh_opts *opts;
struct nc_ch_client *ch_client = NULL;
assert(!strcmp(LYD_NAME(node), "mac-alg"));
/* LOCK */
if (is_ch(node) && nc_server_config_get_ch_client_with_lock(node, &ch_client)) {
/* to avoid unlock on fail */
return 1;
}
if (nc_server_config_get_ssh_opts(node, ch_client, &opts)) {
ret = 1;
goto cleanup;
}
/* get the algorithm name and append it to supported algs */
alg = ((struct lyd_node_term *)node)->value.ident->name;
if (nc_server_config_transport_params(alg, &opts->mac_algs, op)) {
ret = 1;
goto cleanup;
}
cleanup:
if (is_ch(node)) {
/* UNLOCK */
nc_ch_client_unlock(ch_client);
}
return ret;
}
static int
nc_server_config_check_endpt_reference_cycle(struct nc_endpt *original, struct nc_endpt *next)
{
if (!next->referenced_endpt_name) {
/* no further reference -> no cycle */
return 0;
}
if (!strcmp(original->name, next->referenced_endpt_name)) {
/* found cycle */
return 1;
} else {
if (nc_server_get_referenced_endpt(next->referenced_endpt_name, &next)) {
/* referenced endpoint does not exist */
return 1;
}
/* continue further */
return nc_server_config_check_endpt_reference_cycle(original, next);
}
}
/**
* @brief Set all endpoint references.
*
* @return 0 on success, 1 on error.
*/
static int
nc_server_config_check_endpt_references(void)
{
uint16_t i, j;
struct nc_endpt *referenced_endpt = NULL;
/* first do listen endpoints */
for (i = 0; i < server_opts.endpt_count; i++) {
/* go through all the endpoints */
if (server_opts.endpts[i].referenced_endpt_name) {
/* get referenced endpt */
if (nc_server_get_referenced_endpt(server_opts.endpts[i].referenced_endpt_name, &referenced_endpt)) {
ERR(NULL, "Endpoint \"%s\" referenced by endpoint \"%s\" does not exist.",
server_opts.endpts[i].referenced_endpt_name, server_opts.endpts[i].name);
return 1;
}
/* check if the endpoint references itself */
if (&server_opts.endpts[i] == referenced_endpt) {
ERR(NULL, "Endpoint \"%s\" references itself.", server_opts.endpts[i].name);
return 1;
}
/* check transport */
if ((server_opts.endpts[i].ti != referenced_endpt->ti)) {
ERR(NULL, "Endpoint \"%s\" referenced by endpoint \"%s\" has different transport type.",
server_opts.endpts[i].referenced_endpt_name, server_opts.endpts[i].name);
return 1;
} else if ((referenced_endpt->ti != NC_TI_SSH) && (referenced_endpt->ti != NC_TI_TLS)) {
ERR(NULL, "Endpoint \"%s\" referenced by endpoint \"%s\" has unsupported transport type.",
server_opts.endpts[i].referenced_endpt_name, server_opts.endpts[i].name);
return 1;
}
/* check cyclic reference */
if (nc_server_config_check_endpt_reference_cycle(&server_opts.endpts[i], referenced_endpt)) {
ERR(NULL, "Endpoint \"%s\" referenced by endpoint \"%s\" creates a cycle.",
server_opts.endpts[i].referenced_endpt_name, server_opts.endpts[i].name);
return 1;
}
/* all went well, assign the name to the opts, so we can access it for auth */
if (server_opts.endpts[i].ti == NC_TI_SSH) {
server_opts.endpts[i].opts.ssh->referenced_endpt_name = referenced_endpt->name;
} else {
server_opts.endpts[i].opts.tls->referenced_endpt_name = referenced_endpt->name;
}
}
}
/* now check all the call home endpoints */
/* LOCK */
pthread_rwlock_rdlock(&server_opts.ch_client_lock);
for (i = 0; i < server_opts.ch_client_count; i++) {
/* LOCK */
pthread_mutex_lock(&server_opts.ch_clients[i].lock);
for (j = 0; j < server_opts.ch_clients[i].ch_endpt_count; j++) {
if (server_opts.ch_clients[i].ch_endpts[j].referenced_endpt_name) {
/* get referenced endpt */
if (nc_server_get_referenced_endpt(server_opts.ch_clients[i].ch_endpts[j].referenced_endpt_name, &referenced_endpt)) {
ERR(NULL, "Endpoint \"%s\" referenced by call home endpoint \"%s\" does not exist.",
server_opts.ch_clients[i].ch_endpts[j].referenced_endpt_name, server_opts.ch_clients[i].ch_endpts[j].name);
goto ch_fail;
}
/* check transport */
if (server_opts.ch_clients[i].ch_endpts[j].ti != referenced_endpt->ti) {
ERR(NULL, "Endpoint \"%s\" referenced by call home endpoint \"%s\" has different transport type.",
server_opts.ch_clients[i].ch_endpts[j].referenced_endpt_name, server_opts.ch_clients[i].ch_endpts[j].name);
goto ch_fail;
} else if ((referenced_endpt->ti != NC_TI_SSH) && (referenced_endpt->ti != NC_TI_TLS)) {
ERR(NULL, "Endpoint \"%s\" referenced by call home endpoint \"%s\" has unsupported transport type.",
server_opts.ch_clients[i].ch_endpts[j].referenced_endpt_name, server_opts.ch_clients[i].ch_endpts[j].name);
goto ch_fail;
}
/* check cyclic reference */
if (nc_server_config_check_endpt_reference_cycle(referenced_endpt, referenced_endpt)) {
ERR(NULL, "Endpoint \"%s\" referenced by call home endpoint \"%s\" creates a cycle.",
server_opts.ch_clients[i].ch_endpts[j].referenced_endpt_name, server_opts.ch_clients[i].ch_endpts[j].name);
goto ch_fail;
}
/* all went well, assign the name to the opts, so we can access it for auth */
if (server_opts.ch_clients[i].ch_endpts[j].ti == NC_TI_SSH) {
server_opts.ch_clients[i].ch_endpts[j].opts.ssh->referenced_endpt_name = referenced_endpt->name;
} else {
server_opts.ch_clients[i].ch_endpts[j].opts.tls->referenced_endpt_name = referenced_endpt->name;
}
}
}
/* UNLOCK */
pthread_mutex_unlock(&server_opts.ch_clients[i].lock);
}
/* UNLOCK */
pthread_rwlock_unlock(&server_opts.ch_client_lock);
return 0;
ch_fail:
/* UNLOCK */
pthread_mutex_unlock(&server_opts.ch_clients[i].lock);
/* UNLOCK */
pthread_rwlock_unlock(&server_opts.ch_client_lock);
return 1;
}
static int
nc_server_config_endpoint_reference(const struct lyd_node *node, NC_OPERATION op)
{
int ret = 0;
struct nc_endpt *endpt = NULL;
struct nc_ch_client *ch_client = NULL;
struct nc_ch_endpt *ch_endpt = NULL;
struct nc_server_ssh_opts *ssh = NULL;
struct nc_server_tls_opts *tls = NULL;
assert(!strcmp(LYD_NAME(node), "endpoint-reference"));
if (is_ch(node) && nc_server_config_get_ch_client_with_lock(node, &ch_client)) {
/* to avoid unlock on fail */
return 1;
}
/* get endpt */
if (is_listen(node)) {
ret = nc_server_config_get_endpt(node, &endpt, NULL);
} else {
ret = nc_server_config_get_ch_endpt(node, ch_client, &ch_endpt);
}
if (ret) {
goto cleanup;
}
if (op == NC_OP_DELETE) {
if (endpt) {
/* listen */
free(endpt->referenced_endpt_name);
endpt->referenced_endpt_name = NULL;
} else {
/* call home */
free(ch_endpt->referenced_endpt_name);
ch_endpt->referenced_endpt_name = NULL;
}
if (is_ssh(node)) {
if (nc_server_config_get_ssh_opts(node, ch_client, &ssh)) {
ret = 1;
goto cleanup;
}
ssh->referenced_endpt_name = NULL;
} else {
if (nc_server_config_get_tls_opts(node, ch_client, &tls)) {
ret = 1;
goto cleanup;
}
tls->referenced_endpt_name = NULL;
}
goto cleanup;
} else {
/* just set the name, check it once configuring of all nodes is done */
if (endpt) {
free(endpt->referenced_endpt_name);
endpt->referenced_endpt_name = strdup(lyd_get_value(node));
NC_CHECK_ERRMEM_GOTO(!endpt->referenced_endpt_name, ret = 1, cleanup);
} else {
free(ch_endpt->referenced_endpt_name);
ch_endpt->referenced_endpt_name = strdup(lyd_get_value(node));
NC_CHECK_ERRMEM_GOTO(!ch_endpt->referenced_endpt_name, ret = 1, cleanup);
}
goto cleanup;
}
cleanup:
if (is_ch(node)) {
/* UNLOCK */
nc_ch_client_unlock(ch_client);
}
return ret;
}
static int
nc_server_config_cert_data(const struct lyd_node *node, NC_OPERATION op)
{
int ret = 0;
struct nc_certificate *cert;
struct nc_server_tls_opts *opts;
struct nc_ch_client *ch_client = NULL;
assert(!strcmp(LYD_NAME(node), "cert-data"));
/* LOCK */
if (is_ch(node) && nc_server_config_get_ch_client_with_lock(node, &ch_client)) {
/* to avoid unlock on fail */
return 1;
}
if (equal_parent_name(node, 3, "server-identity")) {
if (nc_server_config_get_tls_opts(node, ch_client, &opts)) {
ret = 1;
goto cleanup;
}
if ((op == NC_OP_CREATE) || (op == NC_OP_REPLACE)) {
free(opts->cert_data);
opts->cert_data = strdup(lyd_get_value(node));
NC_CHECK_ERRMEM_GOTO(!opts->cert_data, ret = 1, cleanup);
}
} else if (equal_parent_name(node, 3, "ca-certs") || equal_parent_name(node, 3, "ee-certs")) {
if (nc_server_config_get_cert(node, ch_client, &cert)) {
ret = 1;
goto cleanup;
}
if ((op == NC_OP_CREATE) || (op == NC_OP_REPLACE)) {
free(cert->data);
cert->data = strdup(lyd_get_value(node));
NC_CHECK_ERRMEM_GOTO(!cert->data, ret = 1, cleanup);
} else {
free(cert->data);
cert->data = NULL;
}
}
cleanup:
if (is_ch(node)) {
/* UNLOCK */
nc_ch_client_unlock(ch_client);
}
return ret;
}
static int
nc_server_config_asymmetric_key(const struct lyd_node *node, NC_OPERATION op)
{
int ret = 0;
struct nc_server_tls_opts *opts;
struct nc_ch_client *ch_client = NULL;
assert(!strcmp(LYD_NAME(node), "asymmetric-key"));
/* LOCK */
if (is_ch(node) && nc_server_config_get_ch_client_with_lock(node, &ch_client)) {
/* to avoid unlock on fail */
return 1;
}
if (nc_server_config_get_tls_opts(node, ch_client, &opts)) {
ret = 1;
goto cleanup;
}
if ((op == NC_OP_CREATE) || (op == NC_OP_REPLACE)) {
/* set to keystore */
opts->store = NC_STORE_KEYSTORE;
free(opts->key_ref);
opts->key_ref = strdup(lyd_get_value(node));
NC_CHECK_ERRMEM_GOTO(!opts->key_ref, ret = 1, cleanup);
} else {
free(opts->key_ref);
opts->key_ref = NULL;
}
cleanup:
if (is_ch(node)) {
/* UNLOCK */
nc_ch_client_unlock(ch_client);
}
return ret;
}
static int
nc_server_config_create_ca_certs_certificate(const struct lyd_node *node, struct nc_server_tls_opts *opts)
{
assert(!strcmp(LYD_NAME(node), "certificate"));
node = lyd_child(node);
assert(!strcmp(LYD_NAME(node), "name"));
return nc_server_config_realloc(lyd_get_value(node), (void **)&opts->ca_certs.certs, sizeof *opts->ca_certs.certs,
&opts->ca_certs.cert_count);
}
static int
nc_server_config_create_ee_certs_certificate(const struct lyd_node *node, struct nc_server_tls_opts *opts)
{
assert(!strcmp(LYD_NAME(node), "certificate"));
node = lyd_child(node);
assert(!strcmp(LYD_NAME(node), "name"));
return nc_server_config_realloc(lyd_get_value(node), (void **)&opts->ee_certs.certs, sizeof *opts->ee_certs.certs,
&opts->ee_certs.cert_count);
}
static int
nc_server_config_certificate(const struct lyd_node *node, NC_OPERATION op)
{
int ret = 0;
struct nc_server_tls_opts *opts;
struct nc_ch_client *ch_client = NULL;
struct nc_certificate *cert;
assert(!strcmp(LYD_NAME(node), "certificate"));
/* LOCK */
if (is_ch(node) && nc_server_config_get_ch_client_with_lock(node, &ch_client)) {
/* to avoid unlock on fail */
return 1;
}
if (nc_server_config_get_tls_opts(node, ch_client, &opts)) {
ret = 1;
goto cleanup;
}
if (equal_parent_name(node, 1, "central-keystore-reference")) {
/* TLS server-identity */
if ((op == NC_OP_CREATE) || (op == NC_OP_REPLACE)) {
/* set to keystore */
opts->store = NC_STORE_KEYSTORE;
free(opts->cert_ref);
opts->cert_ref = strdup(lyd_get_value(node));
NC_CHECK_ERRMEM_GOTO(!opts->cert_ref, ret = 1, cleanup);
} else {
free(opts->cert_ref);
opts->cert_ref = NULL;
}
} else if (equal_parent_name(node, 2, "ca-certs")) {
/* TLS client auth certificate authority */
if ((op == NC_OP_CREATE) || (op == NC_OP_REPLACE)) {
ret = nc_server_config_create_ca_certs_certificate(node, opts);
if (ret) {
goto cleanup;
}
} else {
if (nc_server_config_get_cert(node, ch_client, &cert)) {
ret = 1;
goto cleanup;
}
nc_server_config_del_cert(&opts->ca_certs, cert);
}
} else if (equal_parent_name(node, 2, "ee-certs")) {
/* TLS client auth end entity */
if ((op == NC_OP_CREATE) || (op == NC_OP_REPLACE)) {
ret = nc_server_config_create_ee_certs_certificate(node, opts);
if (ret) {
goto cleanup;
}
} else {
if (nc_server_config_get_cert(node, ch_client, &cert)) {
ret = 1;
goto cleanup;
}
nc_server_config_del_cert(&opts->ee_certs, cert);
}
}
cleanup:
if (is_ch(node)) {
/* UNLOCK */
nc_ch_client_unlock(ch_client);
}
return ret;
}
static int
nc_server_config_create_cert_to_name(const struct lyd_node *node, struct nc_server_tls_opts *opts)
{
int ret = 0;
struct lyd_node *n;
struct nc_ctn *new, *iter;
const char *map_type, *name = NULL;
uint32_t id;
NC_TLS_CTN_MAPTYPE m_type;
assert(!strcmp(LYD_NAME(node), "cert-to-name"));
/* find the list's key */
lyd_find_path(node, "id", 0, &n);
assert(n);
id = ((struct lyd_node_term *)n)->value.uint32;
/* get CTN map-type */
if (lyd_find_path(node, "map-type", 0, &n)) {
ERR(NULL, "Missing CTN map-type.");
ret = 1;
goto cleanup;
}
map_type = ((struct lyd_node_term *)n)->value.ident->name;
if (!strcmp(map_type, "specified")) {
m_type = NC_TLS_CTN_SPECIFIED;
/* get CTN name */
if (lyd_find_path(node, "name", 0, &n)) {
ERR(NULL, "Missing CTN \"specified\" user name.");
ret = 1;
goto cleanup;
}
name = lyd_get_value(n);
} else if (!strcmp(map_type, "san-rfc822-name")) {
m_type = NC_TLS_CTN_SAN_RFC822_NAME;
} else if (!strcmp(map_type, "san-dns-name")) {
m_type = NC_TLS_CTN_SAN_DNS_NAME;
} else if (!strcmp(map_type, "san-ip-address")) {
m_type = NC_TLS_CTN_SAN_IP_ADDRESS;
} else if (!strcmp(map_type, "san-any")) {
m_type = NC_TLS_CTN_SAN_ANY;
} else if (!strcmp(map_type, "common-name")) {
m_type = NC_TLS_CTN_COMMON_NAME;
} else {
ERR(NULL, "CTN map-type \"%s\" not supported.", map_type);
ret = 1;
goto cleanup;
}
/* create new ctn */
new = calloc(1, sizeof *new);
NC_CHECK_ERRMEM_GOTO(!new, ret = 1, cleanup);
/* find the right place for insertion */
if (!opts->ctn) {
/* inserting the first one */
opts->ctn = new;
} else if (opts->ctn->id > id) {
/* insert at the beginning */
new->next = opts->ctn;
opts->ctn = new;
} else {
/* have to find the right place */
for (iter = opts->ctn; iter->next && iter->next->id <= id; iter = iter->next) {}
if (iter->id == id) {
/* collision, replace */
free(new);
new = iter;
free(new->name);
new->name = NULL;
} else {
new->next = iter->next;
iter->next = new;
}
}
/* insert the right data */
new->id = id;
if (name) {
new->name = strdup(name);
NC_CHECK_ERRMEM_GOTO(!new->name, ret = 1, cleanup);
}
new->map_type = m_type;
cleanup:
return ret;
}
static int
nc_server_config_cert_to_name(const struct lyd_node *node, NC_OPERATION op)
{
int ret = 0;
struct nc_server_tls_opts *opts;
struct nc_ctn *ctn;
struct nc_ch_client *ch_client = NULL;
assert(!strcmp(LYD_NAME(node), "cert-to-name"));
/* LOCK */
if (is_ch(node) && nc_server_config_get_ch_client_with_lock(node, &ch_client)) {
/* to avoid unlock on fail */
return 1;
}
if (nc_server_config_get_tls_opts(node, ch_client, &opts)) {
ret = 1;
goto cleanup;
}
if ((op == NC_OP_CREATE) || (op == NC_OP_REPLACE)) {
ret = nc_server_config_create_cert_to_name(node, opts);
if (ret) {
goto cleanup;
}
} else {
/* find the given ctn entry */
if (nc_server_config_get_ctn(node, ch_client, &ctn)) {
ret = 1;
goto cleanup;
}
nc_server_config_del_ctn(opts, ctn);
}
cleanup:
if (is_ch(node)) {
/* UNLOCK */
nc_ch_client_unlock(ch_client);
}
return ret;
}
static int
nc_server_config_fingerprint(const struct lyd_node *node, NC_OPERATION op)
{
int ret = 0;
struct nc_ctn *ctn;
struct nc_ch_client *ch_client = NULL;
assert(!strcmp(LYD_NAME(node), "fingerprint"));
/* LOCK */
if (is_ch(node) && nc_server_config_get_ch_client_with_lock(node, &ch_client)) {
/* to avoid unlock on fail */
return 1;
}
if (nc_server_config_get_ctn(node, ch_client, &ctn)) {
ret = 1;
goto cleanup;
}
if ((op == NC_OP_CREATE) || (op == NC_OP_REPLACE)) {
free(ctn->fingerprint);
ctn->fingerprint = strdup(lyd_get_value(node));
NC_CHECK_ERRMEM_GOTO(!ctn->fingerprint, ret = 1, cleanup);
} else {
free(ctn->fingerprint);
ctn->fingerprint = NULL;
}
cleanup:
if (is_ch(node)) {
/* UNLOCK */
nc_ch_client_unlock(ch_client);
}
return ret;
}
static int
nc_server_config_tls_version(const struct lyd_node *node, NC_OPERATION op)
{
int ret = 0;
struct nc_server_tls_opts *opts;
const char *version = NULL;
struct nc_ch_client *ch_client = NULL;
NC_TLS_VERSION tls_version;
assert(!strcmp(LYD_NAME(node), "tls-version"));
/* LOCK */
if (is_ch(node) && nc_server_config_get_ch_client_with_lock(node, &ch_client)) {
/* to avoid unlock on fail */
return 1;
}
if (nc_server_config_get_tls_opts(node, ch_client, &opts)) {
ret = 1;
goto cleanup;
}
/* str to tls_version */
version = ((struct lyd_node_term *)node)->value.ident->name;
if (!strcmp(version, "tls10")) {
tls_version = NC_TLS_VERSION_10;
} else if (!strcmp(version, "tls11")) {
tls_version = NC_TLS_VERSION_11;
} else if (!strcmp(version, "tls12")) {
tls_version = NC_TLS_VERSION_12;
} else if (!strcmp(version, "tls13")) {
tls_version = NC_TLS_VERSION_13;
} else {
ERR(NULL, "TLS version \"%s\" not supported.", version);
ret = 1;
goto cleanup;
}
if (op == NC_OP_CREATE) {
/* add the version if it isn't there already */
opts->tls_versions |= tls_version;
} else if ((op == NC_OP_DELETE) && (opts->tls_versions & tls_version)) {
/* delete the version if it is there */
opts->tls_versions &= ~tls_version;
}
cleanup:
if (is_ch(node)) {
/* UNLOCK */
nc_ch_client_unlock(ch_client);
}
return ret;
}
static int
nc_server_config_create_cipher_suite(struct nc_server_tls_opts *opts, const char *cipher)
{
int ret = 0;
char *processed_cipher = NULL;
ret = nc_tls_process_cipher_suite_wrap(cipher, &processed_cipher);
if (ret) {
ERR(NULL, "Failed to process the cipher suite \"%s\".", cipher);
goto cleanup;
}
ret = nc_tls_append_cipher_suite_wrap(opts, processed_cipher);
if (ret) {
ERR(NULL, "Failed to append the cipher suite \"%s\".", cipher);
goto cleanup;
}
cleanup:
free(processed_cipher);
return ret;
}
static int
nc_server_config_del_cipher_suite(struct nc_server_tls_opts *opts, const char *cipher)
{
int ret = 0;
ret = nc_server_config_delete_substring(opts->ciphers, cipher, ':');
if (ret) {
ERR(NULL, "Unable to delete a cipher (%s), which was not previously added.", cipher);
return 1;
}
return 0;
}
static int
nc_server_config_cipher_suite(const struct lyd_node *node, NC_OPERATION op)
{
int ret = 0;
struct nc_server_tls_opts *opts;
const char *cipher = NULL;
struct nc_ch_client *ch_client = NULL;
assert(!strcmp(LYD_NAME(node), "cipher-suite"));
/* LOCK */
if (is_ch(node) && nc_server_config_get_ch_client_with_lock(node, &ch_client)) {
/* to avoid unlock on fail */
return 1;
}
if (nc_server_config_get_tls_opts(node, ch_client, &opts)) {
ret = 1;
goto cleanup;
}
cipher = ((struct lyd_node_term *)node)->value.ident->name;
if (op == NC_OP_CREATE) {
ret = nc_server_config_create_cipher_suite(opts, cipher);
if (ret) {
goto cleanup;
}
} else if (op == NC_OP_DELETE) {
ret = nc_server_config_del_cipher_suite(opts, cipher);
if (ret) {
goto cleanup;
}
}
cleanup:
if (is_ch(node)) {
/* UNLOCK */
nc_ch_client_unlock(ch_client);
}
return ret;
}
#endif /* NC_ENABLED_SSH_TLS */
static int
nc_server_config_create_netconf_client(const struct lyd_node *node)
{
int ret = 0;
node = lyd_child(node);
assert(!strcmp(LYD_NAME(node), "name"));
/* LOCK */
pthread_rwlock_wrlock(&server_opts.ch_client_lock);
ret = nc_server_config_realloc(lyd_get_value(node), (void **)&server_opts.ch_clients, sizeof *server_opts.ch_clients, &server_opts.ch_client_count);
if (ret) {
goto cleanup;
}
server_opts.ch_clients[server_opts.ch_client_count - 1].id = ATOMIC_INC_RELAXED(server_opts.new_client_id);
server_opts.ch_clients[server_opts.ch_client_count - 1].start_with = NC_CH_FIRST_LISTED;
server_opts.ch_clients[server_opts.ch_client_count - 1].max_attempts = 3;
pthread_mutex_init(&server_opts.ch_clients[server_opts.ch_client_count - 1].lock, NULL);
cleanup:
/* UNLOCK */
pthread_rwlock_unlock(&server_opts.ch_client_lock);
return ret;
}
static int
nc_server_config_netconf_client(const struct lyd_node *node, NC_OPERATION op)
{
int ret = 0;
assert(!strcmp(LYD_NAME(node), "netconf-client"));
if (op == NC_OP_CREATE) {
ret = nc_server_config_create_netconf_client(node);
if (ret) {
goto cleanup;
}
#ifdef NC_ENABLED_SSH_TLS
if (server_opts.ch_dispatch_data.acquire_ctx_cb && server_opts.ch_dispatch_data.release_ctx_cb &&
server_opts.ch_dispatch_data.new_session_cb) {
/* we have all we need for dispatching a new call home thread */
ret = nc_connect_ch_client_dispatch(lyd_get_value(lyd_child(node)), server_opts.ch_dispatch_data.acquire_ctx_cb,
server_opts.ch_dispatch_data.release_ctx_cb, server_opts.ch_dispatch_data.ctx_cb_data,
server_opts.ch_dispatch_data.new_session_cb, server_opts.ch_dispatch_data.new_session_cb_data);
if (ret) {
ERR(NULL, "Dispatching a new Call Home thread failed for Call Home client \"%s\".", lyd_get_value(lyd_child(node)));
goto cleanup;
}
}
#endif /* NC_ENABLED_SSH_TLS */
} else if (op == NC_OP_DELETE) {
nc_server_config_ch_del_client(node);
}
cleanup:
return ret;
}
#ifdef NC_ENABLED_SSH_TLS
static int
nc_server_config_remote_address(const struct lyd_node *node, NC_OPERATION op)
{
int ret = 0;
struct nc_ch_endpt *ch_endpt;
struct nc_ch_client *ch_client = NULL;
assert(!strcmp(LYD_NAME(node), "remote-address"));
/* LOCK */
if (nc_server_config_get_ch_client_with_lock(node, &ch_client)) {
/* to avoid unlock on fail */
return 1;
}
if (nc_server_config_get_ch_endpt(node, ch_client, &ch_endpt)) {
ret = 1;
goto cleanup;
}
if ((op == NC_OP_CREATE) || (op == NC_OP_REPLACE)) {
free(ch_endpt->dst_addr);
ch_endpt->dst_addr = strdup(lyd_get_value(node));
NC_CHECK_ERRMEM_GOTO(!ch_endpt->dst_addr, ret = 1, cleanup);
} else {
free(ch_endpt->dst_addr);
ch_endpt->dst_addr = NULL;
}
cleanup:
/* UNLOCK */
nc_ch_client_unlock(ch_client);
return ret;
}
static int
nc_server_config_remote_port(const struct lyd_node *node, NC_OPERATION op)
{
int ret = 0;
struct nc_ch_endpt *ch_endpt;
struct nc_ch_client *ch_client = NULL;
assert(!strcmp(LYD_NAME(node), "remote-port"));
/* LOCK */
if (nc_server_config_get_ch_client_with_lock(node, &ch_client)) {
/* to avoid unlock on fail */
return 1;
}
if (nc_server_config_get_ch_endpt(node, ch_client, &ch_endpt)) {
ret = 1;
goto cleanup;
}
if ((op == NC_OP_CREATE) || (op == NC_OP_REPLACE)) {
ch_endpt->dst_port = ((struct lyd_node_term *)node)->value.uint16;
} else {
ch_endpt->dst_port = 0;
}
cleanup:
/* UNLOCK */
nc_ch_client_unlock(ch_client);
return ret;
}
#endif /* NC_ENABLED_SSH_TLS */
static int
nc_server_config_persistent(const struct lyd_node *node, NC_OPERATION op)
{
int ret = 0;
struct nc_ch_client *ch_client = NULL;
assert(!strcmp(LYD_NAME(node), "persistent"));
(void) op;
/* LOCK */
if (nc_server_config_get_ch_client_with_lock(node, &ch_client)) {
/* to avoid unlock on fail */
return 1;
}
ch_client->conn_type = NC_CH_PERSIST;
/* UNLOCK */
nc_ch_client_unlock(ch_client);
return ret;
}
static int
nc_server_config_periodic(const struct lyd_node *node, NC_OPERATION op)
{
int ret = 0;
struct nc_ch_client *ch_client = NULL;
assert(!strcmp(LYD_NAME(node), "periodic"));
(void) op;
/* LOCK */
if (nc_server_config_get_ch_client_with_lock(node, &ch_client)) {
/* to avoid unlock on fail */
return 1;
}
ch_client->conn_type = NC_CH_PERIOD;
/* set default values */
ch_client->period = 60;
ch_client->anchor_time = 0;
ch_client->idle_timeout = 180;
/* UNLOCK */
nc_ch_client_unlock(ch_client);
return ret;
}
static int
nc_server_config_period(const struct lyd_node *node, NC_OPERATION op)
{
int ret = 0;
struct nc_ch_client *ch_client = NULL;
assert(!strcmp(LYD_NAME(node), "period"));
/* LOCK */
if (nc_server_config_get_ch_client_with_lock(node, &ch_client)) {
/* to avoid unlock on fail */
return 1;
}
if ((op == NC_OP_CREATE) || (op == NC_OP_REPLACE)) {
ch_client->period = ((struct lyd_node_term *)node)->value.uint16;
} else if (op == NC_OP_DELETE) {
ch_client->period = 60;
}
/* UNLOCK */
nc_ch_client_unlock(ch_client);
return ret;
}
static int
nc_server_config_anchor_time(const struct lyd_node *node, NC_OPERATION op)
{
int ret = 0;
struct nc_ch_client *ch_client = NULL;
struct lyd_value_date_and_time *anchor_time;
assert(!strcmp(LYD_NAME(node), "anchor-time"));
/* LOCK */
if (nc_server_config_get_ch_client_with_lock(node, &ch_client)) {
/* to avoid unlock on fail */
return 1;
}
/* get the value of time from the node directly */
LYD_VALUE_GET(&((struct lyd_node_term *)node)->value, anchor_time);
if ((op == NC_OP_CREATE) || (op == NC_OP_REPLACE)) {
ch_client->anchor_time = anchor_time->time;
} else if (op == NC_OP_DELETE) {
ch_client->anchor_time = 0;
}
/* UNLOCK */
nc_ch_client_unlock(ch_client);
return ret;
}
static int
nc_server_config_reconnect_strategy(const struct lyd_node *node, NC_OPERATION op)
{
int ret = 0;
struct nc_ch_client *ch_client = NULL;
assert(!strcmp(LYD_NAME(node), "reconnect-strategy"));
(void) op;
/* LOCK */
if (nc_server_config_get_ch_client_with_lock(node, &ch_client)) {
/* to avoid unlock on fail */
return 1;
}
/* set to default values */
ch_client->start_with = NC_CH_FIRST_LISTED;
ch_client->max_wait = 5;
ch_client->max_attempts = 3;
/* UNLOCK */
nc_ch_client_unlock(ch_client);
return ret;
}
static int
nc_server_config_start_with(const struct lyd_node *node, NC_OPERATION op)
{
int ret = 0;
struct nc_ch_client *ch_client = NULL;
const char *value;
assert(!strcmp(LYD_NAME(node), "start-with"));
/* LOCK */
if (nc_server_config_get_ch_client_with_lock(node, &ch_client)) {
/* to avoid unlock on fail */
return 1;
}
if (op == NC_OP_DELETE) {
ch_client->start_with = NC_CH_FIRST_LISTED;
goto cleanup;
}
value = lyd_get_value(node);
if (!strcmp(value, "first-listed")) {
ch_client->start_with = NC_CH_FIRST_LISTED;
} else if (!strcmp(value, "last-connected")) {
ch_client->start_with = NC_CH_LAST_CONNECTED;
} else if (!strcmp(value, "random-selection")) {
ch_client->start_with = NC_CH_RANDOM;
} else {
ERR(NULL, "Unexpected start-with value \"%s\".", value);
ret = 1;
goto cleanup;
}
cleanup:
/* UNLOCK */
nc_ch_client_unlock(ch_client);
return ret;
}
static int
nc_server_config_max_wait(const struct lyd_node *node, NC_OPERATION op)
{
int ret = 0;
struct nc_ch_client *ch_client = NULL;
assert(!strcmp(LYD_NAME(node), "max-wait"));
/* LOCK */
if (nc_server_config_get_ch_client_with_lock(node, &ch_client)) {
/* to avoid unlock on fail */
return 1;
}
if ((op == NC_OP_CREATE) || (op == NC_OP_REPLACE)) {
ch_client->max_wait = ((struct lyd_node_term *)node)->value.uint16;
} else {
ch_client->max_wait = 5;
}
/* UNLOCK */
nc_ch_client_unlock(ch_client);
return ret;
}
static int
nc_server_config_max_attempts(const struct lyd_node *node, NC_OPERATION op)
{
int ret = 0;
struct nc_ch_client *ch_client = NULL;
assert(!strcmp(LYD_NAME(node), "max-attempts"));
/* LOCK */
if (nc_server_config_get_ch_client_with_lock(node, &ch_client)) {
/* to avoid unlock on fail */
return 1;
}
if ((op == NC_OP_CREATE) || (op == NC_OP_REPLACE)) {
ch_client->max_attempts = ((struct lyd_node_term *)node)->value.uint8;
} else {
ch_client->max_attempts = 3;
}
/* UNLOCK */
nc_ch_client_unlock(ch_client);
return ret;
}
static int
nc_server_config_parse_netconf_server(const struct lyd_node *node, NC_OPERATION op)
{
const char *name = LYD_NAME(node);
int ret = 0;
if (!strcmp(name, "listen")) {
ret = nc_server_config_listen(node, op);
} else if (!strcmp(name, "call-home")) {
ret = nc_server_config_ch(node, op);
} else if (!strcmp(name, "endpoint")) {
ret = nc_server_config_endpoint(node, op);
}
#ifdef NC_ENABLED_SSH_TLS
else if (!strcmp(name, "ssh")) {
ret = nc_server_config_ssh(node, op);
} else if (!strcmp(name, "local-address")) {
ret = nc_server_config_local_address(node, op);
} else if (!strcmp(name, "local-port")) {
ret = nc_server_config_local_port(node, op);
} else if (!strcmp(name, "keepalives")) {
ret = nc_server_config_keepalives(node, op);
} else if (!strcmp(name, "idle-time")) {
ret = nc_server_config_idle_time(node, op);
} else if (!strcmp(name, "max-probes")) {
ret = nc_server_config_max_probes(node, op);
} else if (!strcmp(name, "probe-interval")) {
ret = nc_server_config_probe_interval(node, op);
} else if (!strcmp(name, "host-key")) {
ret = nc_server_config_host_key(node, op);
} else if (!strcmp(name, "public-key-format")) {
ret = nc_server_config_public_key_format(node, op);
} else if (!strcmp(name, "public-key")) {
ret = nc_server_config_public_key(node, op);
} else if (!strcmp(name, "private-key-format")) {
ret = nc_server_config_private_key_format(node, op);
} else if (!strcmp(name, "cleartext-private-key")) {
ret = nc_server_config_cleartext_private_key(node, op);
} else if (!strcmp(name, "central-keystore-reference")) {
ret = nc_server_config_keystore_reference(node, op);
} else if (!strcmp(name, "user")) {
ret = nc_server_config_user(node, op);
} else if (!strcmp(name, "auth-timeout")) {
ret = nc_server_config_auth_timeout(node, op);
} else if (!strcmp(name, "central-truststore-reference")) {
ret = nc_server_config_truststore_reference(node, op);
} else if (!strcmp(name, "use-system-keys")) {
ret = nc_server_config_use_system_keys(node, op);
} else if (!strcmp(name, "password")) {
ret = nc_server_config_password(node, op);
} else if (!strcmp(name, "use-system-auth")) {
ret = nc_server_config_use_system_auth(node, op);
} else if (!strcmp(name, "none")) {
ret = nc_server_config_none(node, op);
} else if (!strcmp(name, "host-key-alg")) {
ret = nc_server_config_host_key_alg(node, op);
} else if (!strcmp(name, "key-exchange-alg")) {
ret = nc_server_config_kex_alg(node, op);
} else if (!strcmp(name, "encryption-alg")) {
ret = nc_server_config_encryption_alg(node, op);
} else if (!strcmp(name, "mac-alg")) {
ret = nc_server_config_mac_alg(node, op);
} else if (!strcmp(name, "endpoint-reference")) {
ret = nc_server_config_endpoint_reference(node, op);
} else if (!strcmp(name, "tls")) {
ret = nc_server_config_tls(node, op);
} else if (!strcmp(name, "cert-data")) {
ret = nc_server_config_cert_data(node, op);
} else if (!strcmp(name, "asymmetric-key")) {
ret = nc_server_config_asymmetric_key(node, op);
} else if (!strcmp(name, "certificate")) {
ret = nc_server_config_certificate(node, op);
} else if (!strcmp(name, "cert-to-name")) {
ret = nc_server_config_cert_to_name(node, op);
} else if (!strcmp(name, "fingerprint")) {
ret = nc_server_config_fingerprint(node, op);
} else if (!strcmp(name, "tls-version")) {
ret = nc_server_config_tls_version(node, op);
} else if (!strcmp(name, "cipher-suite")) {
ret = nc_server_config_cipher_suite(node, op);
}
#endif /* NC_ENABLED_SSH_TLS */
else if (!strcmp(name, "netconf-client")) {
ret = nc_server_config_netconf_client(node, op);
}
#ifdef NC_ENABLED_SSH_TLS
else if (!strcmp(name, "remote-address")) {
ret = nc_server_config_remote_address(node, op);
} else if (!strcmp(name, "remote-port")) {
ret = nc_server_config_remote_port(node, op);
}
#endif /* NC_ENABLED_SSH_TLS */
else if (!strcmp(name, "persistent")) {
ret = nc_server_config_persistent(node, op);
} else if (!strcmp(name, "periodic")) {
ret = nc_server_config_periodic(node, op);
} else if (!strcmp(name, "period")) {
ret = nc_server_config_period(node, op);
} else if (!strcmp(name, "anchor-time")) {
ret = nc_server_config_anchor_time(node, op);
} else if (!strcmp(name, "idle-timeout")) {
ret = nc_server_config_idle_timeout(node, op);
} else if (!strcmp(name, "reconnect-strategy")) {
ret = nc_server_config_reconnect_strategy(node, op);
} else if (!strcmp(name, "start-with")) {
ret = nc_server_config_start_with(node, op);
} else if (!strcmp(name, "max-wait")) {
ret = nc_server_config_max_wait(node, op);
} else if (!strcmp(name, "max-attempts")) {
ret = nc_server_config_max_attempts(node, op);
}
if (ret) {
ERR(NULL, "Configuring node \"%s\" failed.", LYD_NAME(node));
return 1;
}
return 0;
}
int
nc_server_config_ln2_netconf_server(const struct lyd_node *node, NC_OPERATION op)
{
(void) node;
assert((op == NC_OP_CREATE) || (op == NC_OP_DELETE));
if (op == NC_OP_DELETE) {
#ifdef NC_ENABLED_SSH_TLS
/* delete the intervals */
pthread_mutex_lock(&server_opts.cert_exp_notif.lock);
free(server_opts.cert_exp_notif.intervals);
server_opts.cert_exp_notif.intervals = NULL;
server_opts.cert_exp_notif.interval_count = 0;
pthread_mutex_unlock(&server_opts.cert_exp_notif.lock);
#endif /* NC_ENABLED_SSH_TLS */
}
return 0;
}
#ifdef NC_ENABLED_SSH_TLS
static int
nc_server_config_yang_value2cert_exp_time(const char *value, struct nc_cert_exp_time *cert_exp_time)
{
char unit;
long val;
unit = value[strlen(value) - 1];
val = strtol(value, NULL, 10);
switch (unit) {
case 'm':
cert_exp_time->months = val;
break;
case 'w':
cert_exp_time->weeks = val;
break;
case 'd':
cert_exp_time->days = val;
break;
case 'h':
cert_exp_time->hours = val;
break;
default:
ERR(NULL, "Unexpected unit in the certificate expiration time \"%s\".", value);
return 1;
}
return 0;
}
static int
nc_server_config_create_interval(const char *anchor, const char *period)
{
int ret = 0;
struct nc_cert_exp_time cert_exp_time = {0};
server_opts.cert_exp_notif.intervals = nc_realloc(server_opts.cert_exp_notif.intervals,
(server_opts.cert_exp_notif.interval_count + 1) * sizeof *server_opts.cert_exp_notif.intervals);
NC_CHECK_ERRMEM_RET(!server_opts.cert_exp_notif.intervals, 1);
/* convert and set the anchor */
ret = nc_server_config_yang_value2cert_exp_time(anchor, &cert_exp_time);
if (ret) {
goto cleanup;
}
memcpy(&server_opts.cert_exp_notif.intervals[server_opts.cert_exp_notif.interval_count].anchor,
&cert_exp_time, sizeof cert_exp_time);
/* convert and set the period */
ret = nc_server_config_yang_value2cert_exp_time(period, &cert_exp_time);
if (ret) {
goto cleanup;
}
memcpy(&server_opts.cert_exp_notif.intervals[server_opts.cert_exp_notif.interval_count].period,
&cert_exp_time, sizeof cert_exp_time);
++server_opts.cert_exp_notif.interval_count;
cleanup:
return ret;
}
static void
nc_server_config_del_interval(const char *anchor, const char *period)
{
int i;
struct nc_cert_exp_time anchor_time = {0}, period_time = {0};
if (nc_server_config_yang_value2cert_exp_time(anchor, &anchor_time)) {
return;
}
if (nc_server_config_yang_value2cert_exp_time(period, &period_time)) {
return;
}
for (i = 0; i < server_opts.cert_exp_notif.interval_count; ++i) {
if (!memcmp(&server_opts.cert_exp_notif.intervals[i].anchor, &anchor_time, sizeof anchor_time) &&
!memcmp(&server_opts.cert_exp_notif.intervals[i].period, &period_time, sizeof period_time)) {
break;
}
}
if (i == server_opts.cert_exp_notif.interval_count) {
ERR(NULL, "Interval \"%s %s\" not found.", anchor, period);
return;
}
server_opts.cert_exp_notif.interval_count--;
if (!server_opts.cert_exp_notif.interval_count) {
free(server_opts.cert_exp_notif.intervals);
server_opts.cert_exp_notif.intervals = NULL;
} else if (i != server_opts.cert_exp_notif.interval_count) {
memcpy(&server_opts.cert_exp_notif.intervals[i],
&server_opts.cert_exp_notif.intervals[server_opts.cert_exp_notif.interval_count],
sizeof *server_opts.cert_exp_notif.intervals);
}
}
static int
nc_server_config_interval(const struct lyd_node *node, NC_OPERATION op)
{
int ret = 0;
struct lyd_node *anchor, *period;
assert(!strcmp(LYD_NAME(node), "interval"));
anchor = lyd_child(node);
assert(anchor);
period = anchor->next;
assert(period);
/* LOCK */
pthread_mutex_lock(&server_opts.cert_exp_notif.lock);
if ((op == NC_OP_CREATE) || (op == NC_OP_REPLACE)) {
ret = nc_server_config_create_interval(lyd_get_value(anchor), lyd_get_value(period));
if (ret) {
goto cleanup;
}
} else {
nc_server_config_del_interval(lyd_get_value(anchor), lyd_get_value(period));
}
cleanup:
pthread_mutex_unlock(&server_opts.cert_exp_notif.lock);
return ret;
}
#endif /* NC_ENABLED_SSH_TLS */
static int
nc_server_config_parse_libnetconf2_netconf_server(const struct lyd_node *node, NC_OPERATION op)
{
const char *name = LYD_NAME(node);
int ret = 0;
if (!strcmp(name, "ln2-netconf-server")) {
ret = nc_server_config_ln2_netconf_server(node, op);
}
#ifdef NC_ENABLED_SSH_TLS
else if (!strcmp(name, "interval")) {
ret = nc_server_config_interval(node, op);
}
#endif /* NC_ENABLED_SSH_TLS */
if (ret) {
ERR(NULL, "Configuring node \"%s\" failed.", LYD_NAME(node));
return 1;
}
return 0;
}
int
nc_server_config_parse_tree(const struct lyd_node *node, NC_OPERATION parent_op, NC_MODULE module)
{
struct lyd_node *child;
struct lyd_meta *m;
NC_OPERATION current_op = NC_OP_UNKNOWN;
int ret;
assert(node);
/* get current op if there is any */
if ((m = lyd_find_meta(node->meta, NULL, "yang:operation"))) {
if (!strcmp(lyd_get_meta_value(m), "create")) {
current_op = NC_OP_CREATE;
} else if (!strcmp(lyd_get_meta_value(m), "delete")) {
current_op = NC_OP_DELETE;
} else if (!strcmp(lyd_get_meta_value(m), "replace")) {
current_op = NC_OP_REPLACE;
} else if (!strcmp(lyd_get_meta_value(m), "none")) {
current_op = NC_OP_NONE;
}
}
/* node has no op, inherit from the parent */
if (!current_op) {
if (!parent_op) {
ERR(NULL, "Unknown operation for node \"%s\".", LYD_NAME(node));
return 1;
}
current_op = parent_op;
}
switch (current_op) {
case NC_OP_NONE:
break;
case NC_OP_CREATE:
case NC_OP_DELETE:
case NC_OP_REPLACE:
#ifdef NC_ENABLED_SSH_TLS
if (module == NC_MODULE_KEYSTORE) {
ret = nc_server_config_parse_keystore(node, current_op);
} else if (module == NC_MODULE_TRUSTSTORE) {
ret = nc_server_config_parse_truststore(node, current_op);
} else
#endif /* NC_ENABLED_SSH_TLS */
if (module == NC_MODULE_LIBNETCONF2_NETCONF_SERVER) {
ret = nc_server_config_parse_libnetconf2_netconf_server(node, current_op);
} else if (module == NC_MODULE_NETCONF_SERVER) {
ret = nc_server_config_parse_netconf_server(node, current_op);
} else {
ERRINT;
ret = 1;
}
if (ret) {
return ret;
}
break;
default:
break;
}
if (current_op != NC_OP_DELETE) {
LY_LIST_FOR(lyd_child(node), child) {
if (nc_server_config_parse_tree(child, current_op, module)) {
return 1;
}
}
}
return 0;
}
API int
nc_server_config_load_modules(struct ly_ctx **ctx)
{
int i, new_ctx = 0;
if (!*ctx) {
if (ly_ctx_new(NC_SERVER_SEARCH_DIR, 0, ctx)) {
ERR(NULL, "Couldn't create new libyang context.\n");
goto error;
}
new_ctx = 1;
}
/* all features */
const char *ietf_nectonf_server[] = {"ssh-listen", "tls-listen", "ssh-call-home", "tls-call-home", "central-netconf-server-supported", NULL};
/* all features */
const char *ietf_x509_cert_to_name[] = {NULL};
/* no private-key-encryption, csr-generation, p10-csr-format, certificate-expiration-notification,
* encrypted-passwords, hidden-symmetric-keys, encrypted-symmetric-keys, hidden-private-keys, encrypted-private-keys,
* one-symmetric-key-format, one-asymmetric-key-format, symmetrically-encrypted-value-format,
* asymmetrically-encrypted-value-format, cms-enveloped-data-format, cms-encrypted-data-format,
* cleartext-symmetric-keys */
const char *ietf_crypto_types[] = {"cleartext-passwords", "cleartext-private-keys", NULL};
/* all features */
const char *ietf_tcp_common[] = {"keepalives-supported", NULL};
/* all features */
const char *ietf_tcp_server[] = {"tcp-server-keepalives", NULL};
/* no proxy-connect, socks5-gss-api, socks5-username-password */
const char *ietf_tcp_client[] = {"local-binding-supported", "tcp-client-keepalives", NULL};
/* no ssh-x509-certs, public-key-generation */
const char *ietf_ssh_common[] = {"transport-params", NULL};
/* no ssh-server-keepalives and local-user-auth-hostbased */
const char *ietf_ssh_server[] = {"local-users-supported", "local-user-auth-publickey", "local-user-auth-password", "local-user-auth-none", NULL};
/* all features */
const char *iana_ssh_encryption_algs[] = {NULL};
/* all features */
const char *iana_ssh_key_exchange_algs[] = {NULL};
/* all features */
const char *iana_ssh_mac_algs[] = {NULL};
/* all features */
const char *iana_ssh_public_key_algs[] = {NULL};
/* all features */
const char *iana_crypt_hash[] = {"crypt-hash-md5", "crypt-hash-sha-256", "crypt-hash-sha-512", NULL};
/* no symmetric-keys */
const char *ietf_keystore[] = {"central-keystore-supported", "inline-definitions-supported", "asymmetric-keys", NULL};
/* all features */
const char *ietf_truststore[] = {"central-truststore-supported", "inline-definitions-supported", "certificates", "public-keys", NULL};
/* no public-key-generation */
const char *ietf_tls_common[] = {"tls10", "tls11", "tls12", "tls13", "hello-params", NULL};
/* no tls-server-keepalives, server-ident-raw-public-key, server-ident-tls12-psk, server-ident-tls13-epsk,
* client-auth-raw-public-key, client-auth-tls12-psk, client-auth-tls13-epsk */
const char *ietf_tls_server[] = {"server-ident-x509-cert", "client-auth-supported", "client-auth-x509-cert", NULL};
/* all features */
const char *iana_tls_cipher_suite_algs[] = {NULL};
/* all features */
const char *libnetconf2_netconf_server[] = {NULL};
const char *module_names[] = {
"ietf-netconf-server", "ietf-x509-cert-to-name", "ietf-crypto-types", "ietf-tcp-common", "ietf-tcp-server",
"ietf-tcp-client", "ietf-ssh-common", "ietf-ssh-server", "iana-ssh-encryption-algs",
"iana-ssh-key-exchange-algs", "iana-ssh-mac-algs", "iana-ssh-public-key-algs", "iana-crypt-hash",
"ietf-keystore", "ietf-truststore", "ietf-tls-common", "ietf-tls-server", "iana-tls-cipher-suite-algs",
"libnetconf2-netconf-server", NULL
};
const char **module_features[] = {
ietf_nectonf_server, ietf_x509_cert_to_name, ietf_crypto_types, ietf_tcp_common,
ietf_tcp_server, ietf_tcp_client, ietf_ssh_common, ietf_ssh_server, iana_ssh_encryption_algs,
iana_ssh_key_exchange_algs, iana_ssh_mac_algs, iana_ssh_public_key_algs, iana_crypt_hash,
ietf_keystore, ietf_truststore, ietf_tls_common, ietf_tls_server, iana_tls_cipher_suite_algs,
libnetconf2_netconf_server, NULL
};
for (i = 0; module_names[i] != NULL; i++) {
if (!ly_ctx_load_module(*ctx, module_names[i], NULL, module_features[i])) {
ERR(NULL, "Loading module \"%s\" failed.\n", module_names[i]);
goto error;
}
}
return 0;
error:
if (new_ctx) {
ly_ctx_destroy(*ctx);
*ctx = NULL;
}
return 1;
}
static int
nc_server_config_fill_netconf_server(const struct lyd_node *data, NC_OPERATION op)
{
int ret = 0;
uint32_t log_options = 0;
struct lyd_node *tree;
/* silently search for ietf-netconf-server, it may not be present */
ly_temp_log_options(&log_options);
ret = lyd_find_path(data, "/ietf-netconf-server:netconf-server", 0, &tree);
if (ret || (tree->flags & LYD_DEFAULT)) {
/* not found */
ret = 0;
goto cleanup;
}
if (nc_server_config_parse_tree(tree, op, NC_MODULE_NETCONF_SERVER)) {
ret = 1;
goto cleanup;
}
#ifdef NC_ENABLED_SSH_TLS
/* check and set all endpoint references */
if (nc_server_config_check_endpt_references()) {
ret = 1;
goto cleanup;
}
#endif /* NC_ENABLED_SSH_TLS */
cleanup:
/* reset the logging options back to what they were */
ly_temp_log_options(NULL);
return ret;
}
static int
nc_server_config_fill_libnetconf2_netconf_server(const struct lyd_node *data, NC_OPERATION op)
{
int ret = 0;
struct lyd_node *tree;
uint32_t log_options = 0;
/* silently search for ln2-netconf-server, it may not be present */
ly_temp_log_options(&log_options);
ret = lyd_find_path(data, "/libnetconf2-netconf-server:ln2-netconf-server", 0, &tree);
if (ret || (tree->flags & LYD_DEFAULT)) {
/* not found */
ret = 0;
goto cleanup;
}
if (nc_server_config_parse_tree(tree, op, NC_MODULE_LIBNETCONF2_NETCONF_SERVER)) {
ret = 1;
goto cleanup;
}
cleanup:
/* reset the logging options back to what they were */
ly_temp_log_options(NULL);
return ret;
}
API int
nc_server_config_setup_diff(const struct lyd_node *data)
{
int ret = 0;
NC_CHECK_ARG_RET(NULL, data, 1);
/* LOCK */
pthread_rwlock_wrlock(&server_opts.config_lock);
#ifdef NC_ENABLED_SSH_TLS
/* configure keystore */
ret = nc_server_config_fill_keystore(data, NC_OP_UNKNOWN);
if (ret) {
ERR(NULL, "Applying ietf-keystore configuration failed.");
goto cleanup;
}
/* configure truststore */
ret = nc_server_config_fill_truststore(data, NC_OP_UNKNOWN);
if (ret) {
ERR(NULL, "Applying ietf-truststore configuration failed.");
goto cleanup;
}
#endif /* NC_ENABLED_SSH_TLS */
/* configure netconf-server */
ret = nc_server_config_fill_netconf_server(data, NC_OP_UNKNOWN);
if (ret) {
ERR(NULL, "Applying ietf-netconf-server configuration failed.");
goto cleanup;
}
/* configure libnetconf2-netconf-server */
ret = nc_server_config_fill_libnetconf2_netconf_server(data, NC_OP_UNKNOWN);
if (ret) {
ERR(NULL, "Applying libnetconf2-netconf-server configuration failed.");
goto cleanup;
}
#ifdef NC_ENABLED_SSH_TLS
/* wake up the cert expiration notif thread if it's running */
pthread_mutex_lock(&server_opts.cert_exp_notif.lock);
if (server_opts.cert_exp_notif.thread_running) {
pthread_cond_signal(&server_opts.cert_exp_notif.cond);
}
pthread_mutex_unlock(&server_opts.cert_exp_notif.lock);
#endif /* NC_ENABLED_SSH_TLS */
cleanup:
/* UNLOCK */
pthread_rwlock_unlock(&server_opts.config_lock);
return ret;
}
API int
nc_server_config_setup_data(const struct lyd_node *data)
{
int ret = 0;
struct lyd_node *tree, *iter, *root;
NC_CHECK_ARG_RET(NULL, data, 1);
/* LOCK */
pthread_rwlock_wrlock(&server_opts.config_lock);
/* find the netconf-server node */
ret = lyd_find_path(data, "/ietf-netconf-server:netconf-server", 0, &root);
if (ret) {
ERR(NULL, "Unable to find the netconf-server container in the YANG data.");
goto cleanup;
}
/* iterate through all the nodes and make sure there is no operation attribute */
LY_LIST_FOR(root, tree) {
LYD_TREE_DFS_BEGIN(tree, iter) {
if (lyd_find_meta(iter->meta, NULL, "yang:operation")) {
ERR(NULL, "Unexpected operation attribute in the YANG data.");
ret = 1;
goto cleanup;
}
LYD_TREE_DFS_END(tree, iter);
}
}
/* delete the current configuration */
nc_server_config_listen(NULL, NC_OP_DELETE);
nc_server_config_ch(NULL, NC_OP_DELETE);
#ifdef NC_ENABLED_SSH_TLS
nc_server_config_ks_keystore(NULL, NC_OP_DELETE);
nc_server_config_ts_truststore(NULL, NC_OP_DELETE);
/* configure keystore */
ret = nc_server_config_fill_keystore(data, NC_OP_CREATE);
if (ret) {
ERR(NULL, "Applying ietf-keystore configuration failed.");
goto cleanup;
}
/* configure truststore */
ret = nc_server_config_fill_truststore(data, NC_OP_CREATE);
if (ret) {
ERR(NULL, "Applying ietf-truststore configuration failed.");
goto cleanup;
}
#endif /* NC_ENABLED_SSH_TLS */
/* configure netconf-server */
ret = nc_server_config_fill_netconf_server(data, NC_OP_CREATE);
if (ret) {
ERR(NULL, "Applying ietf-netconf-server configuration failed.");
goto cleanup;
}
/* configure libnetconf2-netconf-server */
ret = nc_server_config_fill_libnetconf2_netconf_server(data, NC_OP_CREATE);
if (ret) {
ERR(NULL, "Applying libnetconf2-netconf-server configuration failed.");
goto cleanup;
}
#ifdef NC_ENABLED_SSH_TLS
/* wake up the cert expiration notif thread if it's running */
pthread_mutex_lock(&server_opts.cert_exp_notif.lock);
if (server_opts.cert_exp_notif.thread_running) {
pthread_cond_signal(&server_opts.cert_exp_notif.cond);
}
pthread_mutex_unlock(&server_opts.cert_exp_notif.lock);
#endif /* NC_ENABLED_SSH_TLS */
cleanup:
/* UNLOCK */
pthread_rwlock_unlock(&server_opts.config_lock);
return ret;
}
API int
nc_server_config_setup_path(const struct ly_ctx *ctx, const char *path)
{
struct lyd_node *tree = NULL;
int ret = 0;
NC_CHECK_ARG_RET(NULL, path, 1);
ret = lyd_parse_data_path(ctx, path, LYD_UNKNOWN, LYD_PARSE_NO_STATE | LYD_PARSE_STRICT, LYD_VALIDATE_NO_STATE, &tree);
if (ret) {
goto cleanup;
}
ret = nc_server_config_setup_data(tree);
if (ret) {
goto cleanup;
}
cleanup:
lyd_free_all(tree);
return ret;
}
#ifdef NC_ENABLED_SSH_TLS
static int
nc_server_config_oper_get_algs(const struct ly_ctx *ctx, const char *mod_name, const char *ln2_algs[],
const char *mod_algs[], struct lyd_node **algs)
{
int ret, r, i;
struct lyd_node *parent = NULL;
char *path = NULL;
NC_CHECK_ARG_RET(NULL, ctx, mod_name, ln2_algs, mod_algs, algs, 1);
*algs = NULL;
r = asprintf(&path, "/%s:supported-algorithms", mod_name);
NC_CHECK_ERRMEM_RET(r == -1, 1);
/* create supported algorithms container */
ret = lyd_new_path(NULL, ctx, path, NULL, 0, &parent);
free(path);
if (ret) {
ERR(NULL, "Creating supported algorithms container failed.");
goto cleanup;
}
/* append algs from libnetconf2-netconf-server */
for (i = 0; ln2_algs[i]; i++) {
r = asprintf(&path, "libnetconf2-netconf-server:%s", ln2_algs[i]);
NC_CHECK_ERRMEM_GOTO(r == -1, ret = 1, cleanup);
ret = lyd_new_term(parent, NULL, "supported-algorithm", path, 0, NULL);
free(path);
if (ret) {
ERR(NULL, "Creating new supported algorithm failed.");
goto cleanup;
}
}
/* append algs from mod_name module */
for (i = 0; mod_algs[i]; i++) {
r = asprintf(&path, "%s:%s", mod_name, mod_algs[i]);
NC_CHECK_ERRMEM_GOTO(r == -1, ret = 1, cleanup);
ret = lyd_new_term(parent, NULL, "supported-algorithm", path, 0, NULL);
free(path);
if (ret) {
ERR(NULL, "Creating new supported algorithm failed.");
goto cleanup;
}
}
cleanup:
if (ret) {
lyd_free_tree(parent);
} else {
*algs = parent;
}
return ret;
}
API int
nc_server_config_oper_get_hostkey_algs(const struct ly_ctx *ctx, struct lyd_node **hostkey_algs)
{
/* identities of hostkey algs supported by libssh (v0.10.5) defined in libnetconf2-netconf-server yang module */
const char *libnetconf2_hostkey_algs[] = {
"openssh-ssh-ed25519-cert-v01", "openssh-ecdsa-sha2-nistp521-cert-v01",
"openssh-ecdsa-sha2-nistp384-cert-v01", "openssh-ecdsa-sha2-nistp256-cert-v01",
"openssh-rsa-sha2-512-cert-v01", "openssh-rsa-sha2-256-cert-v01",
"openssh-ssh-rsa-cert-v01", "openssh-ssh-dss-cert-v01", NULL
};
/* identities of hostkey algs supported by libssh (v0.10.5) defined in iana-ssh-public-key-algs yang module */
const char *iana_hostkey_algs[] = {
"ssh-ed25519", "ecdsa-sha2-nistp521", "ecdsa-sha2-nistp384", "ecdsa-sha2-nistp256",
"rsa-sha2-512", "rsa-sha2-256", "ssh-rsa", "ssh-dss", NULL
};
NC_CHECK_ARG_RET(NULL, ctx, hostkey_algs, 1);
return nc_server_config_oper_get_algs(ctx, "iana-ssh-public-key-algs", libnetconf2_hostkey_algs,
iana_hostkey_algs, hostkey_algs);
}
API int
nc_server_config_oper_get_kex_algs(const struct ly_ctx *ctx, struct lyd_node **kex_algs)
{
/* identities of kex algs supported by libssh (v0.10.5) defined in libnetconf2-netconf-server yang module */
const char *libnetconf2_kex_algs[] = {
"libssh-curve25519-sha256", NULL
};
/* identities of kex algs supported by libssh (v0.10.5) defined in iana-ssh-key-exchange-algs yang module */
const char *iana_kex_algs[] = {
"diffie-hellman-group-exchange-sha1", "curve25519-sha256", "ecdh-sha2-nistp256", "ecdh-sha2-nistp384",
"ecdh-sha2-nistp521", "diffie-hellman-group18-sha512", "diffie-hellman-group16-sha512",
"diffie-hellman-group-exchange-sha256", "diffie-hellman-group14-sha256", NULL
};
NC_CHECK_ARG_RET(NULL, ctx, kex_algs, 1);
return nc_server_config_oper_get_algs(ctx, "iana-ssh-key-exchange-algs", libnetconf2_kex_algs,
iana_kex_algs, kex_algs);
}
API int
nc_server_config_oper_get_encryption_algs(const struct ly_ctx *ctx, struct lyd_node **encryption_algs)
{
/* identities of encryption algs supported by libssh (v0.10.5) defined in libnetconf2-netconf-server yang module */
const char *libnetconf2_encryption_algs[] = {
"openssh-chacha20-poly1305", "openssh-aes256-gcm", "openssh-aes128-gcm", NULL
};
/* identities of encryption algs supported by libssh (v0.10.5) defined in iana-ssh-encryption-algs yang module */
const char *iana_encryption_algs[] = {
"aes256-ctr", "aes192-ctr", "aes128-ctr", "aes256-cbc", "aes192-cbc", "aes128-cbc",
"blowfish-cbc", "triple-des-cbc", "none", NULL
};
NC_CHECK_ARG_RET(NULL, ctx, encryption_algs, 1);
return nc_server_config_oper_get_algs(ctx, "iana-ssh-encryption-algs", libnetconf2_encryption_algs,
iana_encryption_algs, encryption_algs);
}
API int
nc_server_config_oper_get_mac_algs(const struct ly_ctx *ctx, struct lyd_node **mac_algs)
{
/* identities of mac algs supported by libssh (v0.10.5) defined in libnetconf2-netconf-server yang module */
const char *libnetconf2_mac_algs[] = {
"openssh-hmac-sha2-256-etm", "openssh-hmac-sha2-512-etm", "openssh-hmac-sha1-etm", NULL
};
/* identities of mac algs supported by libssh (v0.10.5) defined in iana-ssh-mac-algs yang module */
const char *iana_mac_algs[] = {
"hmac-sha2-256", "hmac-sha2-512", "hmac-sha1", NULL
};
NC_CHECK_ARG_RET(NULL, ctx, mac_algs, 1);
return nc_server_config_oper_get_algs(ctx, "iana-ssh-mac-algs", libnetconf2_mac_algs,
iana_mac_algs, mac_algs);
}
#endif /* NC_ENABLED_SSH_TLS */