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145 lines
4.8 KiB
145 lines
4.8 KiB
/*
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** Zabbix
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** Copyright (C) 2001-2023 Zabbix SIA
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**
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** This program is free software; you can redistribute it and/or modify
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** it under the terms of the GNU General Public License as published by
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** the Free Software Foundation; either version 2 of the License, or
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** (at your option) any later version.
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**
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** This program is distributed in the hope that it will be useful,
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** but WITHOUT ANY WARRANTY; without even the implied warranty of
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** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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** GNU General Public License for more details.
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**
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** You should have received a copy of the GNU General Public License
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** along with this program; if not, write to the Free Software
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** Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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**/
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#ifndef ZABBIX_ZBXIPCSERVICE_H
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#define ZABBIX_ZBXIPCSERVICE_H
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#include "zbxalgo.h"
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#include "zbxtime.h"
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#define ZBX_IPC_SOCKET_BUFFER_SIZE 4096
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#define ZBX_IPC_RECV_IMMEDIATE 0
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#define ZBX_IPC_RECV_WAIT 1
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#define ZBX_IPC_RECV_TIMEOUT 2
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#define ZBX_IPC_WAIT_FOREVER -1
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typedef struct
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{
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/* the message code */
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zbx_uint32_t code;
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/* the data size */
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zbx_uint32_t size;
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/* the data */
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unsigned char *data;
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}
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zbx_ipc_message_t;
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/* Messaging socket, providing blocking connections to IPC service. */
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/* The IPC socket api is used for simple write/read operations. */
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typedef struct
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{
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/* socket descriptor */
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int fd;
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/* incoming data buffer */
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unsigned char rx_buffer[ZBX_IPC_SOCKET_BUFFER_SIZE];
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zbx_uint32_t rx_buffer_bytes;
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zbx_uint32_t rx_buffer_offset;
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}
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zbx_ipc_socket_t;
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typedef struct zbx_ipc_client zbx_ipc_client_t;
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/* IPC service */
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typedef struct
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{
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/* the listening socket descriptor */
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int fd;
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struct event_base *ev;
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struct event *ev_listener;
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struct event *ev_timer;
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struct event *ev_alert;
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/* the unix socket path */
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char *path;
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/* the connected clients */
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zbx_vector_ptr_t clients;
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/* the clients with messages */
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zbx_queue_ptr_t clients_recv;
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}
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zbx_ipc_service_t;
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typedef struct
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{
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zbx_ipc_client_t *client;
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struct event_base *ev;
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struct event *ev_timer;
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unsigned char state;
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}
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zbx_ipc_async_socket_t;
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int zbx_ipc_service_init_env(const char *path, char **error);
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void zbx_ipc_service_free_env(void);
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int zbx_ipc_service_start(zbx_ipc_service_t *service, const char *service_name, char **error);
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int zbx_ipc_service_recv(zbx_ipc_service_t *service, const zbx_timespec_t *timeout, zbx_ipc_client_t **client,
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zbx_ipc_message_t **message);
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void zbx_ipc_service_alert(zbx_ipc_service_t *service);
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void zbx_ipc_service_close(zbx_ipc_service_t *service);
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int zbx_ipc_client_send(zbx_ipc_client_t *client, zbx_uint32_t code, const unsigned char *data, zbx_uint32_t size);
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void zbx_ipc_client_close(zbx_ipc_client_t *client);
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int zbx_ipc_client_get_fd(zbx_ipc_client_t *client);
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void zbx_ipc_client_addref(zbx_ipc_client_t *client);
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void zbx_ipc_client_release(zbx_ipc_client_t *client);
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int zbx_ipc_client_connected(zbx_ipc_client_t *client);
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zbx_uint64_t zbx_ipc_client_id(const zbx_ipc_client_t *client);
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zbx_ipc_client_t *zbx_ipc_client_by_id(const zbx_ipc_service_t *service, zbx_uint64_t id);
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void zbx_ipc_client_set_userdata(zbx_ipc_client_t *client, void *userdata);
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void *zbx_ipc_client_get_userdata(zbx_ipc_client_t *client);
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int zbx_ipc_socket_open(zbx_ipc_socket_t *csocket, const char *service_name, int timeout, char **error);
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void zbx_ipc_socket_close(zbx_ipc_socket_t *csocket);
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int zbx_ipc_socket_write(zbx_ipc_socket_t *csocket, zbx_uint32_t code, const unsigned char *data,
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zbx_uint32_t size);
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int zbx_ipc_socket_read(zbx_ipc_socket_t *csocket, zbx_ipc_message_t *message);
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int zbx_ipc_socket_connected(const zbx_ipc_socket_t *csocket);
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int zbx_ipc_async_socket_open(zbx_ipc_async_socket_t *asocket, const char *service_name, int timeout, char **error);
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void zbx_ipc_async_socket_close(zbx_ipc_async_socket_t *asocket);
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int zbx_ipc_async_socket_send(zbx_ipc_async_socket_t *asocket, zbx_uint32_t code, const unsigned char *data,
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zbx_uint32_t size);
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int zbx_ipc_async_socket_recv(zbx_ipc_async_socket_t *asocket, int timeout, zbx_ipc_message_t **message);
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int zbx_ipc_async_socket_flush(zbx_ipc_async_socket_t *asocket, int timeout);
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int zbx_ipc_async_socket_check_unsent(zbx_ipc_async_socket_t *asocket);
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int zbx_ipc_async_socket_connected(zbx_ipc_async_socket_t *asocket);
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int zbx_ipc_async_exchange(const char *service_name, zbx_uint32_t code, int timeout, const unsigned char *data,
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zbx_uint32_t size, unsigned char **out, char **error);
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void zbx_ipc_message_free(zbx_ipc_message_t *message);
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void zbx_ipc_message_clean(zbx_ipc_message_t *message);
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void zbx_ipc_message_init(zbx_ipc_message_t *message);
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void zbx_ipc_message_format(const zbx_ipc_message_t *message, char **data);
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#ifdef HAVE_OPENIPMI
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void zbx_ipc_message_copy(zbx_ipc_message_t *dst, const zbx_ipc_message_t *src);
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#endif
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void zbx_init_library_ipcservice(unsigned char program_type);
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#endif
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