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/*****************************************************************************
*
* Monitoring Plugins net utilities include file
*
* License: GPL
* Copyright (c) 1999 Ethan Galstad (nagios@nagios.org)
* Copyright (c) 2003-2007 Monitoring Plugins Development Team
*
* Description:
*
* This file contains common include files and function definitions
* used in many of the plugins.
*
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*
*****************************************************************************/
#ifndef _NETUTILS_H_
#define _NETUTILS_H_
#include "output.h"
#include "states.h"
#include "utils.h"
#include <netinet/in.h>
#include <arpa/inet.h>
#include <netdb.h>
#ifdef HAVE_SYS_UN_H
# include <sys/un.h>
# ifndef UNIX_PATH_MAX
/* linux uses this, on sun it's hard-coded at 108 without a define, on BSD at 104 */
# define UNIX_PATH_MAX 104
# endif /* UNIX_PATH_MAX */
#endif /* HAVE_SYS_UN_H */
#ifndef HOST_MAX_BYTES
# define HOST_MAX_BYTES 255
#endif
/* process_request and wrapper macros */
#define process_tcp_request(addr, port, sbuf, rbuf, rsize) \
process_request(addr, port, IPPROTO_TCP, sbuf, rbuf, rsize)
#define process_udp_request(addr, port, sbuf, rbuf, rsize) \
process_request(addr, port, IPPROTO_UDP, sbuf, rbuf, rsize)
mp_state_enum process_tcp_request2(const char *server_address, int server_port,
const char *send_buffer, char *recv_buffer, int recv_size);
mp_state_enum process_request(const char *server_address, int server_port, int proto,
const char *send_buffer, char *recv_buffer, int recv_size);
/* my_connect and wrapper macros */
#define my_tcp_connect(addr, port, s) np_net_connect(addr, port, s, IPPROTO_TCP)
#define my_udp_connect(addr, port, s) np_net_connect(addr, port, s, IPPROTO_UDP)
mp_state_enum np_net_connect(const char *host_name, int port, int *socketDescriptor, int proto);
/* send_request and wrapper macros */
#define send_tcp_request(s, sbuf, rbuf, rsize) send_request(s, IPPROTO_TCP, sbuf, rbuf, rsize)
#define send_udp_request(s, sbuf, rbuf, rsize) send_request(s, IPPROTO_UDP, sbuf, rbuf, rsize)
mp_state_enum send_request(int socket, int proto, const char *send_buffer, char *recv_buffer,
int recv_size);
/* "is_*" wrapper macros and functions */
bool is_host(const char *);
bool is_addr(const char *);
bool dns_lookup(const char *, struct sockaddr_storage *, int);
void host_or_die(const char *str);
#define resolve_host_or_addr(addr, family) dns_lookup(addr, NULL, family)
#define is_inet_addr(addr) resolve_host_or_addr(addr, AF_INET)
#ifdef USE_IPV6
# define is_inet6_addr(addr) resolve_host_or_addr(addr, AF_INET6)
# define is_hostname(addr) resolve_host_or_addr(addr, address_family)
#else
# define is_hostname(addr) resolve_host_or_addr(addr, AF_INET)
#endif
extern unsigned int socket_timeout;
extern mp_state_enum socket_timeout_state;
extern mp_state_enum econn_refuse_state;
extern bool was_refused;
extern int address_family;
void socket_timeout_alarm_handler(int) __attribute__((noreturn));
/* SSL-Related functionality */
#ifdef HAVE_SSL
# define MP_SSLv2 1
# define MP_SSLv3 2
# define MP_TLSv1 3
# define MP_TLSv1_1 4
# define MP_TLSv1_2 5
# define MP_SSLv2_OR_NEWER 6
# define MP_SSLv3_OR_NEWER 7
# define MP_TLSv1_OR_NEWER 8
# define MP_TLSv1_1_OR_NEWER 9
# define MP_TLSv1_2_OR_NEWER 10
/* maybe this could be merged with the above np_net_connect, via some flags */
int np_net_ssl_init(int socket);
int np_net_ssl_init_with_hostname(int socket, char *host_name);
int np_net_ssl_init_with_hostname_and_version(int socket, char *host_name, int version);
int np_net_ssl_init_with_hostname_version_and_cert(int socket, char *host_name, int version,
char *cert, char *privkey);
void np_net_ssl_cleanup(void);
int np_net_ssl_write(const void *buf, int num);
int np_net_ssl_read(void *buf, int num);
typedef enum {
ALL_OK,
NO_SERVER_CERTIFICATE_PRESENT,
UNABLE_TO_RETRIEVE_CERTIFICATE_SUBJECT,
WRONG_TIME_FORMAT_IN_CERTIFICATE,
} retrieve_expiration_date_errors;
typedef struct {
double remaining_seconds;
retrieve_expiration_date_errors errors;
} retrieve_expiration_time_result;
typedef struct {
mp_state_enum result_state;
double remaining_seconds;
retrieve_expiration_date_errors errors;
} net_ssl_check_cert_result;
net_ssl_check_cert_result np_net_ssl_check_cert2(int days_till_exp_warn, int days_till_exp_crit);
mp_state_enum np_net_ssl_check_cert(int days_till_exp_warn, int days_till_exp_crit);
mp_subcheck mp_net_ssl_check_cert(int days_till_exp_warn, int days_till_exp_crit);
#endif /* HAVE_SSL */
#endif /* _NETUTILS_H_ */
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