plugins/netutils.h

   1 /*****************************************************************************
   2 *
   3 * Nagios plugins net utilities include file
   4 *
   5 * License: GPL
   6 * Copyright (c) 1999 Ethan Galstad (nagios@nagios.org)
   7 * Copyright (c) 2003-2007 Nagios Plugins Development Team
   8 *
   9 * Description:
  10 *
  11 * This file contains common include files and function definitions
  12 * used in many of the plugins.
  13 *
  14 *
  15 * This program is free software: you can redistribute it and/or modify
  16 * it under the terms of the GNU General Public License as published by
  17 * the Free Software Foundation, either version 3 of the License, or
  18 * (at your option) any later version.
  19 *
  20 * This program is distributed in the hope that it will be useful,
  21 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  22 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  23 * GNU General Public License for more details.
  24 *
  25 * You should have received a copy of the GNU General Public License
  26 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  27 *
  28 *
  29 *****************************************************************************/
  30
  31 #ifndef _NETUTILS_H_
  32 #define _NETUTILS_H_
  33
  34 #include "common.h"
  35 #include "utils.h"
  36 #include <netinet/in.h>
  37 #include <arpa/inet.h>
  38 #include <netdb.h>
  39
  40 #ifdef HAVE_SYS_UN_H
  41 # include <sys/un.h>
  42 # ifndef UNIX_PATH_MAX
  43    /* linux uses this, on sun it's hard-coded at 108 without a define */
  44 #  define UNIX_PATH_MAX 108
  45 # endif /* UNIX_PATH_MAX */
  46 #endif /* HAVE_SYS_UN_H */
  47
  48 /* process_request and wrapper macros */
  49 #define process_tcp_request(addr, port, sbuf, rbuf, rsize) \
  50         process_request(addr, port, IPPROTO_TCP, sbuf, rbuf, rsize)
  51 #define process_udp_request(addr, port, sbuf, rbuf, rsize) \
  52         process_request(addr, port, IPPROTO_UDP, sbuf, rbuf, rsize)
  53 int process_tcp_request2 (const char *address, int port,
  54   const char *sbuffer, char *rbuffer, int rsize);
  55 int process_request (const char *address, int port, int proto,
  56   const char *sbuffer, char *rbuffer, int rsize);
  57
  58 /* my_connect and wrapper macros */
  59 #define my_tcp_connect(addr, port, s) np_net_connect(addr, port, s, IPPROTO_TCP)
  60 #define my_udp_connect(addr, port, s) np_net_connect(addr, port, s, IPPROTO_UDP)
  61 int np_net_connect(const char *address, int port, int *sd, int proto);
  62
  63 /* send_request and wrapper macros */
  64 #define send_tcp_request(s, sbuf, rbuf, rsize) \
  65         send_request(s, IPPROTO_TCP, sbuf, rbuf, rsize)
  66 #define send_udp_request(s, sbuf, rbuf, rsize) \
  67         send_request(s, IPPROTO_UDP, sbuf, rbuf, rsize)
  68 int send_request (int sd, int proto, const char *send_buffer, char *recv_buffer, int recv_size);
  69
  70
  71 /* "is_*" wrapper macros and functions */
  72 int is_host (const char *);
  73 int is_addr (const char *);
  74 int resolve_host_or_addr (const char *, int);
  75 void host_or_die(const char *str);
  76 #define is_inet_addr(addr) resolve_host_or_addr(addr, AF_INET)
  77 #ifdef USE_IPV6
  78 #  define is_inet6_addr(addr) resolve_host_or_addr(addr, AF_INET6)
  79 #  define is_hostname(addr) resolve_host_or_addr(addr, address_family)
  80 #else
  81 #  define is_hostname(addr) resolve_host_or_addr(addr, AF_INET)
  82 #endif
  83
  84 #ifdef LOCAL_TIMEOUT_ALARM_HANDLER
  85 extern unsigned int socket_timeout;
  86 extern int socket_timeout_state;
  87 RETSIGTYPE socket_timeout_alarm_handler (int) __attribute__((noreturn));
  88 #else
  89 unsigned int socket_timeout = DEFAULT_SOCKET_TIMEOUT;
  90 unsigned int socket_timeout_state = STATE_CRITICAL;
  91 extern RETSIGTYPE socket_timeout_alarm_handler (int) __attribute__((noreturn));
  92 #endif
  93
  94 extern int econn_refuse_state;
  95 extern int was_refused;
  96 extern int address_family;
  97
  98 /* SSL-Related functionality */
  99 #ifdef HAVE_SSL
 100 /* maybe this could be merged with the above np_net_connect, via some flags */
 101 int np_net_ssl_init(int sd);
 102 int np_net_ssl_init_with_hostname(int sd, char *host_name);
 103 int np_net_ssl_init_with_hostname_and_version(int sd, char *host_name, int version);
 104 int np_net_ssl_init_with_hostname_version_and_certificate(int sd, char *host_name, int version, char *cert, char *privkey);
 105 void np_net_ssl_cleanup();
 106 int np_net_ssl_write(const void *buf, int num);
 107 int np_net_ssl_read(void *buf, int num);
 108 int np_net_ssl_check_cert(int days_till_exp_warn, int days_till_exp_crit);
 109 #endif /* HAVE_SSL */
 110
 111 #endif /* _NETUTILS_H_ */