qdevices/qnetd-instance.c

   1 /*
   2  * Copyright (c) 2015-2020 Red Hat, Inc.
   3  *
   4  * All rights reserved.
   5  *
   6  * Author: Jan Friesse (jfriesse@redhat.com)
   7  *
   8  * This software licensed under BSD license, the text of which follows:
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions are met:
  12  *
  13  * - Redistributions of source code must retain the above copyright notice,
  14  *   this list of conditions and the following disclaimer.
  15  * - Redistributions in binary form must reproduce the above copyright notice,
  16  *   this list of conditions and the following disclaimer in the documentation
  17  *   and/or other materials provided with the distribution.
  18  * - Neither the name of the Red Hat, Inc. nor the names of its
  19  *   contributors may be used to endorse or promote products derived from this
  20  *   software without specific prior written permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  23  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  25  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  26  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  27  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  28  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  29  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  30  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  31  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
  32  * THE POSSIBILITY OF SUCH DAMAGE.
  33  */
  34
  35 #include <sys/types.h>
  36
  37 #include <pk11func.h>
  38 #include "qnetd-instance.h"
  39 #include "qnetd-client.h"
  40 #include "qnetd-algorithm.h"
  41 #include "qnetd-log-debug.h"
  42 #include "qnetd-dpd-timer.h"
  43 #include "qnetd-client-algo-timer.h"
  44
  45 int
  46 qnetd_instance_init(struct qnetd_instance *instance,
  47     enum tlv_tls_supported tls_supported, int tls_client_cert_required, size_t max_clients,
  48     const struct qnetd_advanced_settings *advanced_settings)
  49 {
  50
  51         memset(instance, 0, sizeof(*instance));
  52
  53         instance->advanced_settings = advanced_settings;
  54
  55         qnetd_client_list_init(&instance->clients);
  56         qnetd_cluster_list_init(&instance->clusters);
  57
  58         instance->tls_supported = tls_supported;
  59         instance->tls_client_cert_required = tls_client_cert_required;
  60
  61         instance->max_clients = max_clients;
  62
  63         pr_poll_loop_init(&instance->main_poll_loop);
  64
  65         if (qnetd_dpd_timer_init(instance) != 0) {
  66                 return (0);
  67         }
  68
  69         return (0);
  70 }
  71
  72 int
  73 qnetd_instance_destroy(struct qnetd_instance *instance)
  74 {
  75         struct qnetd_client *client;
  76         struct qnetd_client *client_next;
  77
  78         qnetd_dpd_timer_destroy(instance);
  79
  80         client = TAILQ_FIRST(&instance->clients);
  81         while (client != NULL) {
  82                 client_next = TAILQ_NEXT(client, entries);
  83
  84                 qnetd_instance_client_disconnect(instance, client, 1);
  85
  86                 client = client_next;
  87         }
  88
  89         qnetd_cluster_list_free(&instance->clusters);
  90         qnetd_client_list_free(&instance->clients);
  91
  92         pr_poll_loop_destroy(&instance->main_poll_loop);
  93
  94         return (0);
  95 }
  96
  97 void
  98 qnetd_instance_client_disconnect(struct qnetd_instance *instance, struct qnetd_client *client,
  99     int server_going_down)
 100 {
 101
 102         qnetd_log_debug_client_disconnect(client, server_going_down);
 103
 104         if (client->init_received) {
 105                 qnetd_algorithm_client_disconnect(client, server_going_down);
 106         }
 107
 108         PR_Close(client->socket);
 109         if (client->cluster != NULL) {
 110                 qnetd_cluster_list_del_client(&instance->clusters, client->cluster, client);
 111         }
 112         qnetd_client_algo_timer_abort(client);
 113         qnetd_client_list_del(&instance->clients, client);
 114 }
 115
 116 int
 117 qnetd_instance_init_certs(struct qnetd_instance *instance)
 118 {
 119
 120         instance->server.cert = PK11_FindCertFromNickname(
 121             instance->advanced_settings->cert_nickname, NULL);
 122         if (instance->server.cert == NULL) {
 123                 return (-1);
 124         }
 125
 126         instance->server.private_key = PK11_FindKeyByAnyCert(instance->server.cert, NULL);
 127         if (instance->server.private_key == NULL) {
 128                 return (-1);
 129         }
 130
 131         return (0);
 132 }