* Copyright (C) 2009 Aman Gupta
*
* 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; only version 2 of the License is applicable.
+ * under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation; only version 2.1 of the License is
+ * applicable.
*
* 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.
+ * Lesser 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.,
- * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* Authors:
* Florian octo Forster <octo at verplant.org>
#if HAVE_POLL_H
# include <poll.h>
#endif
+#if HAVE_NET_IF_H
+# include <net/if.h>
+#endif
#if HAVE_LIBGCRYPT
# include <gcrypt.h>
* Private variables
*/
static int network_config_ttl = 0;
+static int network_config_interface_idx = 0;
static size_t network_config_packet_size = 1024;
static int network_config_forward = 0;
static int network_config_stats = 0;
return (0);
} /* int network_set_ttl */
+static int network_set_interface (const sockent_t *se, const struct addrinfo *ai) /* {{{ */
+{
+ DEBUG ("network plugin: network_set_interface: interface index = %i;",
+ network_config_interface_idx);
+
+ assert (se->type == SOCKENT_TYPE_CLIENT);
+
+ if (ai->ai_family == AF_INET)
+ {
+ struct sockaddr_in *addr = (struct sockaddr_in *) ai->ai_addr;
+
+ if (IN_MULTICAST (ntohl (addr->sin_addr.s_addr)))
+ {
+#if KERNEL_LINUX
+ struct ip_mreqn mreq;
+#else
+ struct ip_mreq mreq;
+#endif
+
+ mreq.imr_multiaddr.s_addr = addr->sin_addr.s_addr;
+#if KERNEL_LINUX
+ mreq.imr_address.s_addr = ntohl (INADDR_ANY);
+ mreq.imr_ifindex = network_config_interface_idx;
+#else
+ mreq.imr_interface.s_addr = ntohl (INADDR_ANY);
+#endif
+
+ if (setsockopt (se->data.client.fd, IPPROTO_IP, IP_MULTICAST_IF,
+ &mreq, sizeof (mreq)) == -1)
+ {
+ char errbuf[1024];
+ ERROR ("setsockopt: %s",
+ sstrerror (errno, errbuf, sizeof (errbuf)));
+ return (-1);
+ }
+
+ return (0);
+ }
+ }
+ else if (ai->ai_family == AF_INET6)
+ {
+ struct sockaddr_in6 *addr = (struct sockaddr_in6 *) ai->ai_addr;
+
+ if (IN6_IS_ADDR_MULTICAST (&addr->sin6_addr))
+ {
+ if (setsockopt (se->data.client.fd, IPPROTO_IPV6, IPV6_MULTICAST_IF,
+ &network_config_interface_idx,
+ sizeof (network_config_interface_idx)) == -1)
+ {
+ char errbuf[1024];
+ ERROR ("setsockopt: %s",
+ sstrerror (errno, errbuf,
+ sizeof (errbuf)));
+ return (-1);
+ }
+
+ return (0);
+ }
+ }
+
+#if KERNEL_LINUX
+ if (network_config_interface_idx != 0)
+ {
+ char interface_name[IFNAMSIZ];
+
+ if (if_indextoname (network_config_interface_idx, interface_name) == NULL)
+ return (-1);
+
+ DEBUG ("network plugin: Binding socket to interface %s", interface_name);
+
+ if (setsockopt (se->data.client.fd, SOL_SOCKET, SO_BINDTODEVICE,
+ interface_name,
+ sizeof(interface_name)) == -1 )
+ {
+ char errbuf[1024];
+ ERROR ("setsockopt: %s",
+ sstrerror (errno, errbuf, sizeof (errbuf)));
+ return (-1);
+ }
+ }
+#endif
+
+ return (0);
+} /* }}} network_set_interface */
+
static int network_bind_socket (int fd, const struct addrinfo *ai)
{
int loop = 0;
struct sockaddr_in *addr = (struct sockaddr_in *) ai->ai_addr;
if (IN_MULTICAST (ntohl (addr->sin_addr.s_addr)))
{
+#if KERNEL_LINUX
+ struct ip_mreqn mreq;
+#else
struct ip_mreq mreq;
+#endif
DEBUG ("fd = %i; IPv4 multicast address found", fd);
mreq.imr_multiaddr.s_addr = addr->sin_addr.s_addr;
- mreq.imr_interface.s_addr = htonl (INADDR_ANY);
+#if KERNEL_LINUX
+ mreq.imr_address.s_addr = ntohl (INADDR_ANY);
+ mreq.imr_ifindex = network_config_interface_idx;
+#else
+ mreq.imr_interface.s_addr = ntohl (INADDR_ANY);
+#endif
if (setsockopt (fd, IPPROTO_IP, IP_MULTICAST_LOOP,
&loop, sizeof (loop)) == -1)
sizeof (errbuf)));
return (-1);
}
+
+ return (0);
}
}
else if (ai->ai_family == AF_INET6)
* single interface; programs running on
* multihomed hosts may need to join the same
* group on more than one interface.*/
- mreq.ipv6mr_interface = 0;
+ mreq.ipv6mr_interface = network_config_interface_idx;
if (setsockopt (fd, IPPROTO_IPV6, IPV6_MULTICAST_LOOP,
&loop, sizeof (loop)) == -1)
sizeof (errbuf)));
return (-1);
}
+
+ return (0);
+ }
+ }
+
+#if KERNEL_LINUX
+ /* if a specific interface was set, bind the socket to it. But to avoid
+ * possible problems with multicast routing, only do that for non-multicast
+ * addresses */
+ if (network_config_interface_idx != 0)
+ {
+ char interface_name[IFNAMSIZ];
+
+ if (if_indextoname (network_config_interface_idx, interface_name) == NULL)
+ return (-1);
+
+ DEBUG ("fd = %i; Binding socket to interface %s", fd, interface_name);
+
+ if (setsockopt (fd, SOL_SOCKET, SO_BINDTODEVICE,
+ interface_name,
+ sizeof(interface_name)) == -1 )
+ {
+ char errbuf[1024];
+ ERROR ("setsockopt: %s",
+ sstrerror (errno, errbuf, sizeof (errbuf)));
+ return (-1);
}
}
+#endif
return (0);
} /* int network_bind_socket */
se->data.client.addrlen = ai_ptr->ai_addrlen;
network_set_ttl (se, ai_ptr);
+ network_set_interface (se, ai_ptr);
/* We don't open more than one write-socket per
* node/service pair.. */
return (0);
} /* }}} int network_config_set_ttl */
+static int network_config_set_interface (const oconfig_item_t *ci) /* {{{ */
+{
+ if ((ci->values_num != 1)
+ || (ci->values[0].type != OCONFIG_TYPE_STRING))
+ {
+ WARNING ("network plugin: The `Interface' config option needs exactly "
+ "one string argument.");
+ return (-1);
+ }
+
+ network_config_interface_idx = if_nametoindex (ci->values[0].value.string);
+
+ return (0);
+} /* }}} int network_config_set_interface */
+
static int network_config_set_buffer_size (const oconfig_item_t *ci) /* {{{ */
{
int tmp;
network_config_add_server (child);
else if (strcasecmp ("TimeToLive", child->key) == 0)
network_config_set_ttl (child);
+ else if (strcasecmp ("Interface", child->key) == 0)
+ network_config_set_interface (child);
else if (strcasecmp ("MaxPacketSize", child->key) == 0)
network_config_set_buffer_size (child);
else if (strcasecmp ("Forward", child->key) == 0)
projects / collectd.git / blobdiff