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/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* Fluent Bit
* ==========
* Copyright (C) 2015-2022 The Fluent Bit Authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <fluent-bit/flb_info.h>
#include <fluent-bit/flb_io.h>
#include <fluent-bit/flb_log.h>
#include <fluent-bit/flb_mem.h>
#include <fluent-bit/flb_sds.h>
#include <fluent-bit/tls/flb_tls.h>
#include <fluent-bit/flb_hash_table.h>
#include <fluent-bit/flb_upstream_node.h>
/* Create a new Upstream Node context */
struct flb_upstream_node *flb_upstream_node_create(flb_sds_t name, flb_sds_t host,
flb_sds_t port,
int tls, int tls_verify,
int tls_debug,
const char *tls_vhost,
const char *tls_ca_path,
const char *tls_ca_file,
const char *tls_crt_file,
const char *tls_key_file,
const char *tls_key_passwd,
struct flb_hash_table *ht,
struct flb_config *config)
{
int i_port;
int io_flags;
char tmp[255];
struct flb_upstream_node *node;
if (!host || !port) {
return NULL;
}
/* port */
i_port = atoi(port);
/* Allocate node context */
node = flb_calloc(1, sizeof(struct flb_upstream_node));
if (!node) {
flb_errno();
return NULL;
}
/* Set node name */
if (!name) {
/* compose a name using given host and port */
snprintf(tmp, sizeof(tmp) - 1, "%s:%s", host, port);
node->name = flb_sds_create(tmp);
}
else {
node->name = name;
}
/* host */
node->host = host;
if (!node->host) {
flb_upstream_node_destroy(node);
return NULL;
}
/* port */
node->port = port;
if (!node->port) {
flb_upstream_node_destroy(node);
return NULL;
}
#ifdef FLB_HAVE_TLS
/* tls: ca path */
node->tls_ca_path = flb_sds_create(tls_ca_path);
if (!node->tls_ca_path) {
flb_upstream_node_destroy(node);
return NULL;
}
/* tls: ca file */
node->tls_ca_file = flb_sds_create(tls_ca_file);
if (!node->tls_ca_file) {
flb_upstream_node_destroy(node);
return NULL;
}
/* tls: crt file */
node->tls_crt_file = flb_sds_create(tls_crt_file);
if (!node->tls_crt_file) {
flb_upstream_node_destroy(node);
return NULL;
}
/* tls: key file */
node->tls_key_file = flb_sds_create(tls_key_file);
if (!node->tls_key_file) {
flb_upstream_node_destroy(node);
return NULL;
}
/* tls: key passwd */
node->tls_key_passwd = flb_sds_create(tls_key_passwd);
if (!node->tls_key_passwd) {
flb_upstream_node_destroy(node);
return NULL;
}
#endif
/* hash table */
node->ht = ht;
#ifdef FLB_HAVE_TLS
/* TLS setup */
if (tls == FLB_TRUE) {
node->tls = flb_tls_create(FLB_TLS_CLIENT_MODE,
tls_verify,
tls_debug,
tls_vhost,
tls_ca_path,
tls_ca_file,
tls_crt_file,
tls_key_file,
tls_key_passwd);
if (!node->tls) {
flb_error("[upstream_node] error initializing TLS context "
"on node '%s'", name);
flb_upstream_node_destroy(node);
return NULL;
}
node->tls_enabled = FLB_TRUE;
}
#endif
/* Upstream flags */
if (tls == FLB_TRUE) {
io_flags = FLB_IO_TLS;
}
else {
io_flags = FLB_IO_TCP;
}
/* upstream context */
node->u = flb_upstream_create(config, node->host, i_port,
io_flags, node->tls);
if (!node->u) {
flb_error("[upstream_node] error creating upstream context "
"for node '%s'", name);
flb_upstream_node_destroy(node);
return NULL;
}
return node;
}
const char *flb_upstream_node_get_property(const char *prop,
struct flb_upstream_node *node)
{
int ret;
int len;
void *value;
size_t size;
len = strlen(prop);
ret = flb_hash_table_get(node->ht, prop, len, &value, &size);
if (ret == -1) {
return NULL;
}
return (char *) value;
}
void flb_upstream_node_destroy(struct flb_upstream_node *node)
{
flb_sds_destroy(node->name);
flb_sds_destroy(node->host);
flb_sds_destroy(node->port);
flb_hash_table_destroy(node->ht);
if (node->u) {
flb_upstream_destroy(node->u);
}
#ifdef FLB_HAVE_TLS
flb_sds_destroy(node->tls_ca_path);
flb_sds_destroy(node->tls_ca_file);
flb_sds_destroy(node->tls_crt_file);
flb_sds_destroy(node->tls_key_file);
flb_sds_destroy(node->tls_key_passwd);
if (node->tls) {
flb_tls_destroy(node->tls);
}
#endif
/* note: node link must be handled by the caller before this call */
flb_free(node);
}
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