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diff --git a/plugins/netutils.c b/plugins/netutils.c
index aee53d35e70b2aca97f924e707d2eb2a3b07c6d0..5e00723e10c9fda42e170d1946f80fbc5b2d1c66 100644 (file)
--- a/plugins/netutils.c
+++ b/plugins/netutils.c
-/****************************************************************************
-*
+/*****************************************************************************
+*
* Nagios plugins network utilities
-*
+*
* License: GPL
* Copyright (c) 1999 Ethan Galstad (nagios@nagios.org)
-*
+* Copyright (c) 2003-2008 Nagios Plugins Development Team
+*
* Last Modified: $Date$
-*
+*
* Description:
-*
+*
* This file contains commons functions used in many of the plugins.
-*
-* License Information:
-*
-* This program is free software; you can redistribute it and/or modify
+*
+*
+* 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 2 of the License, or
+* 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, write to the Free Software
-* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-*
-****************************************************************************/
+* along with this program. If not, see <http://www.gnu.org/licenses/>.
+*
+* $Id$
+*
+*****************************************************************************/
+
+#define LOCAL_TIMEOUT_ALARM_HANDLER
#include "common.h"
#include "netutils.h"
unsigned int socket_timeout = DEFAULT_SOCKET_TIMEOUT;
int econn_refuse_state = STATE_CRITICAL;
int was_refused = FALSE;
+#if USE_IPV6
int address_family = AF_UNSPEC;
+#else
+int address_family = AF_INET;
+#endif
-static int my_connect(const char *address, int port, int *sd, int proto);
/* handles socket timeouts */
void
socket_timeout_alarm_handler (int sig)
{
if (sig == SIGALRM)
- printf ("CRITICAL - Socket timeout after %d seconds\n", socket_timeout);
+ printf (_("CRITICAL - Socket timeout after %d seconds\n"), socket_timeout);
else
- printf ("CRITICAL - Abnormal timeout after %d seconds\n", socket_timeout);
+ printf (_("CRITICAL - Abnormal timeout after %d seconds\n"), socket_timeout);
exit (STATE_CRITICAL);
}
-/* connects to a host on a specified TCP port, sends a string,
- and gets a response */
-int
-process_tcp_request (const char *server_address, int server_port,
- const char *send_buffer, char *recv_buffer, int recv_size)
-{
- int result;
-
- result = process_request (server_address, server_port,
- IPPROTO_TCP, send_buffer, recv_buffer, recv_size);
-
- return result;
-}
-
-
-/* connects to a host on a specified UDP port, sends a string, and gets a
- response */
-int
-process_udp_request (const char *server_address, int server_port,
- const char *send_buffer, char *recv_buffer, int recv_size)
-{
- int result;
-
- result = process_request (server_address, server_port,
- IPPROTO_UDP, send_buffer, recv_buffer, recv_size);
-
- return result;
-}
-
-
-
/* connects to a host on a specified tcp port, sends a string, and gets a
response. loops on select-recv until timeout or eof to get all of a
multi-packet answer */
fd_set readfds;
int recv_length = 0;
- result = my_connect (server_address, server_port, &sd, IPPROTO_TCP);
+ result = np_net_connect (server_address, server_port, &sd, IPPROTO_TCP);
if (result != STATE_OK)
return STATE_CRITICAL;
send_result = send (sd, send_buffer, strlen (send_buffer), 0);
if (send_result<0 || (size_t)send_result!=strlen(send_buffer)) {
- printf ("send() failed\n");
+ printf ("%s\n", _("Send failed"));
result = STATE_WARNING;
}
if (!FD_ISSET (sd, &readfds)) { /* it hasn't */
if (!recv_length) {
strcpy (recv_buffer, "");
- printf ("No data was received from host!\n");
+ printf ("%s\n", _("No data was received from host!"));
result = STATE_WARNING;
}
else { /* this one failed, but previous ones worked */
return result;
}
+
/* connects to a host on a specified port, sends a string, and gets a
response */
int
result = STATE_OK;
- result = my_connect (server_address, server_port, &sd, proto);
+ result = np_net_connect (server_address, server_port, &sd, proto);
if (result != STATE_OK)
return STATE_CRITICAL;
}
-/* opens a connection to a remote host/tcp port */
-int
-my_tcp_connect (const char *host_name, int port, int *sd)
-{
- int result;
-
- result = my_connect (host_name, port, sd, IPPROTO_TCP);
-
- return result;
-}
-
-
-/* opens a connection to a remote host/udp port */
+/* opens a tcp or udp connection to a remote host or local socket */
int
-my_udp_connect (const char *host_name, int port, int *sd)
-{
- int result;
-
- result = my_connect (host_name, port, sd, IPPROTO_UDP);
-
- return result;
-}
-
-
-/* opens a tcp or udp connection to a remote host */
-static int
-my_connect (const char *host_name, int port, int *sd, int proto)
+np_net_connect (const char *host_name, int port, int *sd, int proto)
{
struct addrinfo hints;
- struct addrinfo *res, *res0;
- char port_str[6];
- int result;
-
- memset (&hints, 0, sizeof (hints));
- hints.ai_family = address_family;
- hints.ai_protocol = proto;
- hints.ai_socktype = (proto == IPPROTO_UDP) ? SOCK_DGRAM : SOCK_STREAM;
+ struct addrinfo *r, *res;
+ struct sockaddr_un su;
+ char port_str[6], host[MAX_HOST_ADDRESS_LENGTH];
+ size_t len;
+ int socktype, result;
+
+ socktype = (proto == IPPROTO_UDP) ? SOCK_DGRAM : SOCK_STREAM;
+
+ /* as long as it doesn't start with a '/', it's assumed a host or ip */
+ if(host_name[0] != '/'){
+ memset (&hints, 0, sizeof (hints));
+ hints.ai_family = address_family;
+ hints.ai_protocol = proto;
+ hints.ai_socktype = socktype;
+
+ len = strlen (host_name);
+ /* check for an [IPv6] address (and strip the brackets) */
+ if (len >= 2 && host_name[0] == '[' && host_name[len - 1] == ']') {
+ host_name++;
+ len -= 2;
+ }
+ if (len >= sizeof(host))
+ return STATE_UNKNOWN;
+ memcpy (host, host_name, len);
+ host[len] = '\0';
+ snprintf (port_str, sizeof (port_str), "%d", port);
+ result = getaddrinfo (host, port_str, &hints, &res);
- snprintf (port_str, sizeof (port_str), "%d", port);
- result = getaddrinfo (host_name, port_str, &hints, &res0);
+ if (result != 0) {
+ printf ("%s\n", gai_strerror (result));
+ return STATE_UNKNOWN;
+ }
- if (result != 0) {
- printf ("%s\n", gai_strerror (result));
- return STATE_UNKNOWN;
- }
- else {
- res = res0;
- while (res) {
+ r = res;
+ while (r) {
/* attempt to create a socket */
- *sd = socket (res->ai_family, (proto == IPPROTO_UDP) ?
- SOCK_DGRAM : SOCK_STREAM, res->ai_protocol);
+ *sd = socket (r->ai_family, socktype, r->ai_protocol);
if (*sd < 0) {
- printf ("Socket creation failed\n");
- freeaddrinfo (res);
+ printf ("%s\n", _("Socket creation failed"));
+ freeaddrinfo (r);
return STATE_UNKNOWN;
}
/* attempt to open a connection */
- result = connect (*sd, res->ai_addr, res->ai_addrlen);
+ result = connect (*sd, r->ai_addr, r->ai_addrlen);
if (result == 0) {
was_refused = FALSE;
}
close (*sd);
- res = res->ai_next;
+ r = r->ai_next;
+ }
+ freeaddrinfo (res);
+ }
+ /* else the hostname is interpreted as a path to a unix socket */
+ else {
+ if(strlen(host_name) >= UNIX_PATH_MAX){
+ die(STATE_UNKNOWN, _("Supplied path too long unix domain socket"));
+ }
+ memset(&su, 0, sizeof(su));
+ su.sun_family = AF_UNIX;
+ strncpy(su.sun_path, host_name, UNIX_PATH_MAX);
+ *sd = socket(PF_UNIX, SOCK_STREAM, 0);
+ if(*sd < 0){
+ die(STATE_UNKNOWN, _("Socket creation failed"));
}
- freeaddrinfo (res0);
+ result = connect(*sd, (struct sockaddr *)&su, sizeof(su));
+ if (result < 0 && errno == ECONNREFUSED)
+ was_refused = TRUE;
}
if (result == 0)
}
}
-
-int
-send_tcp_request (int sd, const char *send_buffer, char *recv_buffer, int recv_size)
-{
- return send_request (sd, IPPROTO_TCP, send_buffer, recv_buffer, recv_size);
-}
-
-
-int
-send_udp_request (int sd, const char *send_buffer, char *recv_buffer, int recv_size)
-{
- return send_request (sd, IPPROTO_UDP, send_buffer, recv_buffer, recv_size);
-}
-
-
int
send_request (int sd, int proto, const char *send_buffer, char *recv_buffer, int recv_size)
{
@@ -313,7 +281,7 @@ send_request (int sd, int proto, const char *send_buffer, char *recv_buffer, int
send_result = send (sd, send_buffer, strlen (send_buffer), 0);
if (send_result<0 || (size_t)send_result!=strlen(send_buffer)) {
- printf ("send() failed\n");
+ printf ("%s\n", _("Send failed"));
result = STATE_WARNING;
}
@@ -328,7 +296,7 @@ send_request (int sd, int proto, const char *send_buffer, char *recv_buffer, int
/* make sure some data has arrived */
if (!FD_ISSET (sd, &readfds)) {
strcpy (recv_buffer, "");
- printf ("No data was received from host!\n");
+ printf ("%s\n", _("No data was received from host!"));
result = STATE_WARNING;
}
@@ -337,7 +305,7 @@ send_request (int sd, int proto, const char *send_buffer, char *recv_buffer, int
if (recv_result == -1) {
strcpy (recv_buffer, "");
if (proto != IPPROTO_TCP)
- printf ("recv() failed\n");
+ printf ("%s\n", _("Receive failed"));
result = STATE_WARNING;
}
else
return (FALSE);
}
+void
+host_or_die(const char *str)
+{
+ if(!str || (!is_addr(str) && !is_hostname(str)))
+ usage_va(_("Invalid hostname/address - %s"), str);
+}
+
int
is_addr (const char *address)
{
#ifdef USE_IPV6
- if (is_inet_addr (address) && address_family != AF_INET6)
+ if (address_family == AF_INET && is_inet_addr (address))
+ return TRUE;
+ else if (address_family == AF_INET6 && is_inet6_addr (address))
+ return TRUE;
#else
if (is_inet_addr (address))
-#endif
- return (TRUE);
-
-#ifdef USE_IPV6
- if (is_inet6_addr (address) && address_family != AF_INET)
return (TRUE);
#endif
return TRUE;
}
}
-
-int
-is_inet_addr (const char *address)
-{
- return resolve_host_or_addr (address, AF_INET);
-}
-
-#ifdef USE_IPV6
-int
-is_inet6_addr (const char *address)
-{
- return resolve_host_or_addr (address, AF_INET6);
-}
-#endif
-
-int
-is_hostname (const char *s1)
-{
-#ifdef USE_IPV6
- return resolve_host_or_addr (s1, address_family);
-#else
- return resolve_host_or_addr (s1, AF_INET);
-#endif
-}
-