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openwrt-packages-dist/net/ulogd/patches/030-ipfix-add.patch

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From 4f639231c83b09ea004c03e95c702b7750bf9930 Mon Sep 17 00:00:00 2001
From: Ander Juaristi <a@juaristi.eus>
Date: Fri, 26 Apr 2019 09:58:06 +0200
Subject: IPFIX: Add IPFIX output plugin
This patch adds an IPFIX output plugin to ulogd2. It generates NetFlow/IPFIX
traces and sends them to a remote server (collector) via TCP or UDP.
Based on original work by Holger Eitzenberger <holger@eitzenberger.org>.
How to test this
----------------
I am currently testing this with the NFCT input and Wireshark.
Place the following in ulogd.conf:
# this will print all flows on screen
loglevel=1
# load NFCT and IPFIX plugins
plugin="/lib/ulogd/ulogd_inpflow_NFCT.so"
plugin="/lib/ulogd/ulogd_output_IPFIX.so"
stack=ct1:NFCT,ipfix1:IPFIX
[ct1]
netlink_socket_buffer_size=217088
netlink_socket_buffer_maxsize=1085440
accept_proto_filter=tcp,sctp
[ipfix1]
oid=1
host="127.0.0.1"
#port=4739
#send_template="once"
I am currently testing it by launching a plain NetCat listener on port
4739 (the default for IPFIX) and then running Wireshark and see that it
dissects the IPFIX/NetFlow traffic correctly (obviously this relies on
the Wireshark NetFlow dissector being correct).
First:
nc -vvvv -l 127.0.0.1 4739
Then:
sudo ulogd -vc ulogd.conf
Signed-off-by: Ander Juaristi <a@juaristi.eus>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
---
configure.ac | 2 +-
include/ulogd/ulogd.h | 5 +
input/flow/ulogd_inpflow_IPFIX.c | 2 -
output/Makefile.am | 2 +-
output/ipfix/Makefile.am | 7 +
output/ipfix/ipfix.c | 141 ++++++++++
output/ipfix/ipfix.h | 89 +++++++
output/ipfix/ulogd_output_IPFIX.c | 503 +++++++++++++++++++++++++++++++++++
output/ulogd_output_IPFIX.c | 546 --------------------------------------
9 files changed, 747 insertions(+), 550 deletions(-)
delete mode 100644 input/flow/ulogd_inpflow_IPFIX.c
create mode 100644 output/ipfix/Makefile.am
create mode 100644 output/ipfix/ipfix.c
create mode 100644 output/ipfix/ipfix.h
create mode 100644 output/ipfix/ulogd_output_IPFIX.c
delete mode 100644 output/ulogd_output_IPFIX.c
diff --git a/configure.ac b/configure.ac
index 3aa0624..48b4995 100644
--- a/configure.ac
+++ b/configure.ac
@@ -179,7 +179,7 @@ AC_CONFIG_FILES(include/Makefile include/ulogd/Makefile include/libipulog/Makefi
input/sum/Makefile \
filter/Makefile filter/raw2packet/Makefile filter/packet2flow/Makefile \
output/Makefile output/pcap/Makefile output/mysql/Makefile output/pgsql/Makefile output/sqlite3/Makefile \
- output/dbi/Makefile \
+ output/dbi/Makefile output/ipfix/Makefile \
src/Makefile Makefile Rules.make)
AC_OUTPUT
diff --git a/include/ulogd/ulogd.h b/include/ulogd/ulogd.h
index 2e38195..1636a8c 100644
--- a/include/ulogd/ulogd.h
+++ b/include/ulogd/ulogd.h
@@ -28,6 +28,11 @@
/* types without length */
#define ULOGD_RET_NONE 0x0000
+#define __packed __attribute__((packed))
+#define __noreturn __attribute__((noreturn))
+#define __cold __attribute__((cold))
+
+#define __packed __attribute__((packed))
#define ULOGD_RET_INT8 0x0001
#define ULOGD_RET_INT16 0x0002
diff --git a/output/Makefile.am b/output/Makefile.am
index ff851ad..7ba8217 100644
--- a/output/Makefile.am
+++ b/output/Makefile.am
@@ -2,7 +2,7 @@ AM_CPPFLAGS = -I$(top_srcdir)/include ${LIBNETFILTER_ACCT_CFLAGS} \
${LIBNETFILTER_CONNTRACK_CFLAGS} ${LIBNETFILTER_LOG_CFLAGS}
AM_CFLAGS = ${regular_CFLAGS}
-SUBDIRS= pcap mysql pgsql sqlite3 dbi
+SUBDIRS= pcap mysql pgsql sqlite3 dbi ipfix
pkglib_LTLIBRARIES = ulogd_output_LOGEMU.la ulogd_output_SYSLOG.la \
ulogd_output_OPRINT.la ulogd_output_GPRINT.la \
diff --git a/output/ipfix/Makefile.am b/output/ipfix/Makefile.am
new file mode 100644
index 0000000..cacda26
--- /dev/null
+++ b/output/ipfix/Makefile.am
@@ -0,0 +1,7 @@
+AM_CPPFLAGS = -I$(top_srcdir)/include
+AM_CFLAGS = $(regular_CFLAGS)
+
+pkglib_LTLIBRARIES = ulogd_output_IPFIX.la
+
+ulogd_output_IPFIX_la_SOURCES = ulogd_output_IPFIX.c ipfix.c
+ulogd_output_IPFIX_la_LDFLAGS = -avoid-version -module
diff --git a/output/ipfix/ipfix.c b/output/ipfix/ipfix.c
new file mode 100644
index 0000000..60a4c7f
--- /dev/null
+++ b/output/ipfix/ipfix.c
@@ -0,0 +1,141 @@
+/*
+ * ipfix.c
+ *
+ * Holger Eitzenberger, 2009.
+ */
+
+/* These forward declarations are needed since ulogd.h doesn't like to be the first */
+#include <ulogd/linuxlist.h>
+
+#define __packed __attribute__((packed))
+
+#include "ipfix.h"
+
+#include <ulogd/ulogd.h>
+#include <ulogd/common.h>
+
+struct ipfix_msg *ipfix_msg_alloc(size_t len, uint32_t oid)
+{
+ struct ipfix_msg *msg;
+ struct ipfix_hdr *hdr;
+
+ if (len < IPFIX_HDRLEN + IPFIX_SET_HDRLEN)
+ return NULL;
+
+ msg = malloc(sizeof(struct ipfix_msg) + len);
+ memset(msg, 0, sizeof(struct ipfix_msg));
+ msg->tail = msg->data + IPFIX_HDRLEN;
+ msg->end = msg->data + len;
+
+ hdr = ipfix_msg_hdr(msg);
+ memset(hdr, 0, IPFIX_HDRLEN);
+ hdr->version = htons(IPFIX_VERSION);
+ hdr->oid = htonl(oid);
+
+ return msg;
+}
+
+void ipfix_msg_free(struct ipfix_msg *msg)
+{
+ if (!msg)
+ return;
+
+ if (msg->nrecs > 0)
+ ulogd_log(ULOGD_DEBUG, "%s: %d flows have been lost\n", __func__,
+ msg->nrecs);
+
+ free(msg);
+}
+
+struct ipfix_hdr *ipfix_msg_hdr(const struct ipfix_msg *msg)
+{
+ return (struct ipfix_hdr *)msg->data;
+}
+
+void *ipfix_msg_data(struct ipfix_msg *msg)
+{
+ return msg->data;
+}
+
+size_t ipfix_msg_len(const struct ipfix_msg *msg)
+{
+ return msg->tail - msg->data;
+}
+
+struct ipfix_set_hdr *ipfix_msg_add_set(struct ipfix_msg *msg, uint16_t sid)
+{
+ struct ipfix_set_hdr *shdr;
+
+ if (msg->end - msg->tail < (int) IPFIX_SET_HDRLEN)
+ return NULL;
+
+ shdr = (struct ipfix_set_hdr *)msg->tail;
+ shdr->id = sid;
+ shdr->len = IPFIX_SET_HDRLEN;
+ msg->tail += IPFIX_SET_HDRLEN;
+ msg->last_set = shdr;
+ return shdr;
+}
+
+struct ipfix_set_hdr *ipfix_msg_get_set(const struct ipfix_msg *msg)
+{
+ return msg->last_set;
+}
+
+/**
+ * Add data record to an IPFIX message. The data is accounted properly.
+ *
+ * @return pointer to data or %NULL if not that much space left.
+ */
+void *ipfix_msg_add_data(struct ipfix_msg *msg, size_t len)
+{
+ void *data;
+
+ if (!msg->last_set) {
+ ulogd_log(ULOGD_FATAL, "msg->last_set is NULL\n");
+ return NULL;
+ }
+
+ if ((ssize_t) len > msg->end - msg->tail)
+ return NULL;
+
+ data = msg->tail;
+ msg->tail += len;
+ msg->nrecs++;
+ msg->last_set->len += len;
+
+ return data;
+}
+
+/* check and dump message */
+int ipfix_dump_msg(const struct ipfix_msg *msg)
+{
+ const struct ipfix_hdr *hdr = ipfix_msg_hdr(msg);
+ const struct ipfix_set_hdr *shdr = (struct ipfix_set_hdr *) hdr->data;
+
+ if (ntohs(hdr->len) < IPFIX_HDRLEN) {
+ ulogd_log(ULOGD_FATAL, "Invalid IPFIX message header length\n");
+ return -1;
+ }
+ if (ipfix_msg_len(msg) != IPFIX_HDRLEN + ntohs(shdr->len)) {
+ ulogd_log(ULOGD_FATAL, "Invalid IPFIX message length\n");
+ return -1;
+ }
+
+ ulogd_log(ULOGD_DEBUG, "msg: ver=%#x len=%#x t=%#x seq=%#x oid=%d\n",
+ ntohs(hdr->version), ntohs(hdr->len), htonl(hdr->time),
+ ntohl(hdr->seqno), ntohl(hdr->oid));
+
+ return 0;
+}
+
+/* template management */
+size_t ipfix_rec_len(uint16_t sid)
+{
+ if (sid != htons(VY_IPFIX_SID)) {
+ ulogd_log(ULOGD_FATAL, "Invalid SID\n");
+ return 0;
+ }
+
+ return sizeof(struct vy_ipfix_data);
+}
diff --git a/output/ipfix/ipfix.h b/output/ipfix/ipfix.h
new file mode 100644
index 0000000..cdb5a6f
--- /dev/null
+++ b/output/ipfix/ipfix.h
@@ -0,0 +1,89 @@
+/*
+ * ipfix.h
+ *
+ * Holger Eitzenberger <holger@eitzenberger.org>, 2009.
+ */
+#ifndef IPFIX_H
+#define IPFIX_H
+
+#include <stdint.h>
+#include <netinet/in.h>
+
+
+struct ipfix_hdr {
+#define IPFIX_VERSION 0xa
+ uint16_t version;
+ uint16_t len;
+ uint32_t time;
+ uint32_t seqno;
+ uint32_t oid; /* Observation Domain ID */
+ uint8_t data[];
+} __packed;
+
+#define IPFIX_HDRLEN sizeof(struct ipfix_hdr)
+
+/*
+ * IDs 0-255 are reserved for Template Sets. IDs of Data Sets are > 255.
+ */
+struct ipfix_templ_hdr {
+ uint16_t id;
+ uint16_t cnt;
+ uint8_t data[];
+} __packed;
+
+struct ipfix_set_hdr {
+#define IPFIX_SET_TEMPL 2
+#define IPFIX_SET_OPT_TEMPL 3
+ uint16_t id;
+ uint16_t len;
+ uint8_t data[];
+} __packed;
+
+#define IPFIX_SET_HDRLEN sizeof(struct ipfix_set_hdr)
+
+struct ipfix_msg {
+ struct llist_head link;
+ uint8_t *tail;
+ uint8_t *end;
+ unsigned nrecs;
+ struct ipfix_set_hdr *last_set;
+ uint8_t data[];
+};
+
+struct vy_ipfix_data {
+ struct in_addr saddr;
+ struct in_addr daddr;
+ uint16_t ifi_in;
+ uint16_t ifi_out;
+ uint32_t packets;
+ uint32_t bytes;
+ uint32_t start; /* Unix time */
+ uint32_t end; /* Unix time */
+ uint16_t sport;
+ uint16_t dport;
+ uint32_t aid; /* Application ID */
+ uint8_t l4_proto;
+ uint8_t dscp;
+ uint16_t __padding;
+} __packed;
+
+#define VY_IPFIX_SID 256
+
+#define VY_IPFIX_FLOWS 36
+#define VY_IPFIX_PKT_LEN (IPFIX_HDRLEN + IPFIX_SET_HDRLEN \
+ + VY_IPFIX_FLOWS * sizeof(struct vy_ipfix_data))
+
+/* template management */
+size_t ipfix_rec_len(uint16_t);
+
+/* message handling */
+struct ipfix_msg *ipfix_msg_alloc(size_t, uint32_t);
+void ipfix_msg_free(struct ipfix_msg *);
+struct ipfix_hdr *ipfix_msg_hdr(const struct ipfix_msg *);
+size_t ipfix_msg_len(const struct ipfix_msg *);
+void *ipfix_msg_data(struct ipfix_msg *);
+struct ipfix_set_hdr *ipfix_msg_add_set(struct ipfix_msg *, uint16_t);
+void *ipfix_msg_add_data(struct ipfix_msg *, size_t);
+int ipfix_dump_msg(const struct ipfix_msg *);
+
+#endif /* IPFIX_H */
diff --git a/output/ipfix/ulogd_output_IPFIX.c b/output/ipfix/ulogd_output_IPFIX.c
new file mode 100644
index 0000000..ec143b1
--- /dev/null
+++ b/output/ipfix/ulogd_output_IPFIX.c
@@ -0,0 +1,503 @@
+/*
+ * ulogd_output_IPFIX.c
+ *
+ * ulogd IPFIX Exporter plugin.
+ *
+ * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * Holger Eitzenberger <holger@eitzenberger.org> Astaro AG 2009
+ */
+#include <unistd.h>
+#include <time.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <arpa/inet.h>
+#include <netdb.h>
+#include <ulogd/ulogd.h>
+#include <ulogd/common.h>
+
+#include "ipfix.h"
+
+#define DEFAULT_MTU 512 /* RFC 5101, 10.3.3 */
+#define DEFAULT_PORT 4739 /* RFC 5101, 10.3.4 */
+#define DEFAULT_SPORT 4740
+
+enum {
+ OID_CE = 0,
+ HOST_CE,
+ PORT_CE,
+ PROTO_CE,
+ MTU_CE,
+};
+
+#define oid_ce(x) (x->ces[OID_CE])
+#define host_ce(x) (x->ces[HOST_CE])
+#define port_ce(x) (x->ces[PORT_CE])
+#define proto_ce(x) (x->ces[PROTO_CE])
+#define mtu_ce(x) (x->ces[MTU_CE])
+
+static const struct config_keyset ipfix_kset = {
+ .num_ces = 5,
+ .ces = {
+ {
+ .key = "oid",
+ .type = CONFIG_TYPE_INT,
+ .u.value = 0
+ },
+ {
+ .key = "host",
+ .type = CONFIG_TYPE_STRING,
+ .u.string = ""
+ },
+ {
+ .key = "port",
+ .type = CONFIG_TYPE_INT,
+ .u.value = DEFAULT_PORT
+ },
+ {
+ .key = "proto",
+ .type = CONFIG_TYPE_STRING,
+ .u.string = "tcp"
+ },
+ {
+ .key = "mtu",
+ .type = CONFIG_TYPE_INT,
+ .u.value = DEFAULT_MTU
+ }
+ }
+};
+
+struct ipfix_templ {
+ struct ipfix_templ *next;
+};
+
+struct ipfix_priv {
+ struct ulogd_fd ufd;
+ uint32_t seqno;
+ struct ipfix_msg *msg; /* current message */
+ struct llist_head list;
+ struct ipfix_templ *templates;
+ int proto;
+ struct ulogd_timer timer;
+ struct sockaddr_in sa;
+};
+
+enum {
+ InIpSaddr = 0,
+ InIpDaddr,
+ InRawInPktCount,
+ InRawInPktLen,
+ InRawOutPktCount,
+ InRawOutPktLen,
+ InFlowStartSec,
+ InFlowStartUsec,
+ InFlowEndSec,
+ InFlowEndUsec,
+ InL4SPort,
+ InL4DPort,
+ InIpProto,
+ InCtMark
+};
+
+static struct ulogd_key ipfix_in_keys[] = {
+ [InIpSaddr] = {
+ .type = ULOGD_RET_IPADDR,
+ .name = "orig.ip.saddr"
+ },
+ [InIpDaddr] = {
+ .type = ULOGD_RET_IPADDR,
+ .name = "orig.ip.daddr"
+ },
+ [InRawInPktCount] = {
+ .type = ULOGD_RET_UINT64,
+ .name = "orig.raw.pktcount"
+ },
+ [InRawInPktLen] = {
+ .type = ULOGD_RET_UINT64,
+ .name = "orig.raw.pktlen"
+ },
+ [InRawOutPktCount] = {
+ .type = ULOGD_RET_UINT64,
+ .name = "reply.raw.pktcount"
+ },
+ [InRawOutPktLen] = {
+ .type = ULOGD_RET_UINT64,
+ .name = "reply.raw.pktlen"
+ },
+ [InFlowStartSec] = {
+ .type = ULOGD_RET_UINT32,
+ .name = "flow.start.sec"
+ },
+ [InFlowStartUsec] = {
+ .type = ULOGD_RET_UINT32,
+ .name = "flow.start.usec"
+ },
+ [InFlowEndSec] = {
+ .type = ULOGD_RET_UINT32,
+ .name = "flow.end.sec"
+ },
+ [InFlowEndUsec] = {
+ .type = ULOGD_RET_UINT32,
+ .name = "flow.end.usec"
+ },
+ [InL4SPort] = {
+ .type = ULOGD_RET_UINT16,
+ .name = "orig.l4.sport"
+ },
+ [InL4DPort] = {
+ .type = ULOGD_RET_UINT16,
+ .name = "orig.l4.dport"
+ },
+ [InIpProto] = {
+ .type = ULOGD_RET_UINT8,
+ .name = "orig.ip.protocol"
+ },
+ [InCtMark] = {
+ .type = ULOGD_RET_UINT32,
+ .name = "ct.mark"
+ }
+};
+
+/* do some polishing and enqueue it */
+static void enqueue_msg(struct ipfix_priv *priv, struct ipfix_msg *msg)
+{
+ struct ipfix_hdr *hdr = ipfix_msg_data(msg);
+
+ if (!msg)
+ return;
+
+ hdr->time = htonl(time(NULL));
+ hdr->seqno = htonl(priv->seqno += msg->nrecs);
+ if (msg->last_set) {
+ msg->last_set->id = htons(msg->last_set->id);
+ msg->last_set->len = htons(msg->last_set->len);
+ msg->last_set = NULL;
+ }
+ hdr->len = htons(ipfix_msg_len(msg));
+
+ llist_add(&msg->link, &priv->list);
+}
+
+/**
+ * @return %ULOGD_IRET_OK or error value
+ */
+static int send_msgs(struct ulogd_pluginstance *pi)
+{
+ struct ipfix_priv *priv = (struct ipfix_priv *) &pi->private;
+ struct llist_head *curr, *tmp;
+ struct ipfix_msg *msg;
+ int ret = ULOGD_IRET_OK, sent;
+
+ llist_for_each_prev(curr, &priv->list) {
+ msg = llist_entry(curr, struct ipfix_msg, link);
+
+ sent = send(priv->ufd.fd, ipfix_msg_data(msg), ipfix_msg_len(msg), 0);
+ if (sent < 0) {
+ ulogd_log(ULOGD_ERROR, "send: %m\n");
+ ret = ULOGD_IRET_ERR;
+ goto done;
+ }
+
+ /* TODO handle short send() for other protocols */
+ if ((size_t) sent < ipfix_msg_len(msg))
+ ulogd_log(ULOGD_ERROR, "short send: %d < %d\n",
+ sent, ipfix_msg_len(msg));
+ }
+
+ llist_for_each_safe(curr, tmp, &priv->list) {
+ msg = llist_entry(curr, struct ipfix_msg, link);
+ llist_del(curr);
+ msg->nrecs = 0;
+ ipfix_msg_free(msg);
+ }
+
+done:
+ return ret;
+}
+
+static int ipfix_ufd_cb(int fd, unsigned what, void *arg)
+{
+ struct ulogd_pluginstance *pi = arg;
+ struct ipfix_priv *priv = (struct ipfix_priv *) pi->private;
+ ssize_t nread;
+ char buf[16];
+
+ if (what & ULOGD_FD_READ) {
+ nread = recv(priv->ufd.fd, buf, sizeof(buf), MSG_DONTWAIT);
+ if (nread < 0) {
+ ulogd_log(ULOGD_ERROR, "recv: %m\n");
+ } else if (!nread) {
+ ulogd_log(ULOGD_INFO, "connection reset by peer\n");
+ ulogd_unregister_fd(&priv->ufd);
+ } else
+ ulogd_log(ULOGD_INFO, "unexpected data (%d bytes)\n", nread);
+ }
+
+ return 0;
+}
+
+static void ipfix_timer_cb(struct ulogd_timer *t, void *data)
+{
+ struct ulogd_pluginstance *pi = data;
+ struct ipfix_priv *priv = (struct ipfix_priv *) &pi->private;
+
+ if (priv->msg && priv->msg->nrecs > 0) {
+ enqueue_msg(priv, priv->msg);
+ priv->msg = NULL;
+ send_msgs(pi);
+ }
+}
+
+static int ipfix_configure(struct ulogd_pluginstance *pi, struct ulogd_pluginstance_stack *stack)
+{
+ struct ipfix_priv *priv = (struct ipfix_priv *) &pi->private;
+ int oid, port, mtu, ret;
+ char *host, *proto;
+ char addr[16];
+
+ ret = config_parse_file(pi->id, pi->config_kset);
+ if (ret < 0)
+ return ret;
+
+ oid = oid_ce(pi->config_kset).u.value;
+ host = host_ce(pi->config_kset).u.string;
+ port = port_ce(pi->config_kset).u.value;
+ proto = proto_ce(pi->config_kset).u.string;
+ mtu = mtu_ce(pi->config_kset).u.value;
+
+ if (!oid) {
+ ulogd_log(ULOGD_FATAL, "invalid Observation ID\n");
+ return ULOGD_IRET_ERR;
+ }
+ if (!host || !strcmp(host, "")) {
+ ulogd_log(ULOGD_FATAL, "no destination host specified\n");
+ return ULOGD_IRET_ERR;
+ }
+
+ if (!strcmp(proto, "udp")) {
+ priv->proto = IPPROTO_UDP;
+ } else if (!strcmp(proto, "tcp")) {
+ priv->proto = IPPROTO_TCP;
+ } else {
+ ulogd_log(ULOGD_FATAL, "unsupported protocol '%s'\n", proto);
+ return ULOGD_IRET_ERR;
+ }
+
+ memset(&priv->sa, 0, sizeof(priv->sa));
+ priv->sa.sin_family = AF_INET;
+ priv->sa.sin_port = htons(port);
+ ret = inet_pton(AF_INET, host, &priv->sa.sin_addr);
+ if (ret <= 0) {
+ ulogd_log(ULOGD_FATAL, "inet_pton: %m\n");
+ return ULOGD_IRET_ERR;
+ }
+
+ INIT_LLIST_HEAD(&priv->list);
+
+ ulogd_init_timer(&priv->timer, pi, ipfix_timer_cb);
+
+ ulogd_log(ULOGD_INFO, "using IPFIX Collector at %s:%d (MTU %d)\n",
+ inet_ntop(AF_INET, &priv->sa.sin_addr, addr, sizeof(addr)),
+ port, mtu);
+
+ return ULOGD_IRET_OK;
+}
+
+static int tcp_connect(struct ulogd_pluginstance *pi)
+{
+ struct ipfix_priv *priv = (struct ipfix_priv *) &pi->private;
+ int ret = ULOGD_IRET_ERR;
+
+ if ((priv->ufd.fd = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
+ ulogd_log(ULOGD_FATAL, "socket: %m\n");
+ return ULOGD_IRET_ERR;
+ }
+
+ if (connect(priv->ufd.fd, (struct sockaddr *) &priv->sa, sizeof(priv->sa)) < 0) {
+ ulogd_log(ULOGD_ERROR, "connect: %m\n");
+ ret = ULOGD_IRET_ERR;
+ goto err_close;
+ }
+
+ return ULOGD_IRET_OK;
+
+err_close:
+ close(priv->ufd.fd);
+ return ret;
+}
+
+static int udp_connect(struct ulogd_pluginstance *pi)
+{
+ struct ipfix_priv *priv = (struct ipfix_priv *) &pi->private;
+
+ if ((priv->ufd.fd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
+ ulogd_log(ULOGD_FATAL, "socket: %m\n");
+ return ULOGD_IRET_ERR;
+ }
+
+ if (connect(priv->ufd.fd, (struct sockaddr *) &priv->sa, sizeof(priv->sa)) < 0) {
+ ulogd_log(ULOGD_ERROR, "connect: %m\n");
+ return ULOGD_IRET_ERR;
+ }
+
+ return 0;
+}
+
+static int ipfix_start(struct ulogd_pluginstance *pi)
+{
+ struct ipfix_priv *priv = (struct ipfix_priv *) &pi->private;
+ char addr[16];
+ int port, ret;
+
+ switch (priv->proto) {
+ case IPPROTO_UDP:
+ if ((ret = udp_connect(pi)) < 0)
+ return ret;
+ break;
+ case IPPROTO_TCP:
+ if ((ret = tcp_connect(pi)) < 0)
+ return ret;
+ break;
+
+ default:
+ break;
+ }
+
+ priv->seqno = 0;
+
+ port = port_ce(pi->config_kset).u.value;
+ ulogd_log(ULOGD_INFO, "connected to %s:%d\n",
+ inet_ntop(AF_INET, &priv->sa.sin_addr, addr, sizeof(addr)),
+ port);
+
+ /* Register the socket FD */
+ priv->ufd.when = ULOGD_FD_READ;
+ priv->ufd.cb = ipfix_ufd_cb;
+ priv->ufd.data = pi;
+
+ if (ulogd_register_fd(&priv->ufd) < 0)
+ return ULOGD_IRET_ERR;
+
+ /* Add a 1 second timer */
+ ulogd_add_timer(&priv->timer, 1);
+
+ return ULOGD_IRET_OK;
+}
+
+static int ipfix_stop(struct ulogd_pluginstance *pi)
+{
+ struct ipfix_priv *priv = (struct ipfix_priv *) &pi->private;
+
+ ulogd_unregister_fd(&priv->ufd);
+ close(priv->ufd.fd);
+ priv->ufd.fd = -1;
+
+ ulogd_del_timer(&priv->timer);
+
+ ipfix_msg_free(priv->msg);
+ priv->msg = NULL;
+
+ return 0;
+}
+
+static int ipfix_interp(struct ulogd_pluginstance *pi)
+{
+ struct ipfix_priv *priv = (struct ipfix_priv *) &pi->private;
+ struct vy_ipfix_data *data;
+ int oid, mtu, ret;
+ char addr[16];
+
+ if (!(GET_FLAGS(pi->input.keys, InIpSaddr) & ULOGD_RETF_VALID))
+ return ULOGD_IRET_OK;
+
+ oid = oid_ce(pi->config_kset).u.value;
+ mtu = mtu_ce(pi->config_kset).u.value;
+
+again:
+ if (!priv->msg) {
+ priv->msg = ipfix_msg_alloc(mtu, oid);
+ if (!priv->msg) {
+ /* just drop this flow */
+ ulogd_log(ULOGD_ERROR, "out of memory, dropping flow\n");
+ return ULOGD_IRET_OK;
+ }
+ ipfix_msg_add_set(priv->msg, VY_IPFIX_SID);
+ }
+
+ data = ipfix_msg_add_data(priv->msg, sizeof(struct vy_ipfix_data));
+ if (!data) {
+ enqueue_msg(priv, priv->msg);
+ priv->msg = NULL;
+ /* can't loop because the next will definitely succeed */
+ goto again;
+ }
+
+ data->ifi_in = data->ifi_out = 0;
+
+ data->saddr.s_addr = ikey_get_u32(&pi->input.keys[InIpSaddr]);
+ data->daddr.s_addr = ikey_get_u32(&pi->input.keys[InIpDaddr]);
+
+ data->packets = htonl((uint32_t) (ikey_get_u64(&pi->input.keys[InRawInPktCount])
+ + ikey_get_u64(&pi->input.keys[InRawOutPktCount])));
+ data->bytes = htonl((uint32_t) (ikey_get_u64(&pi->input.keys[InRawInPktLen])
+ + ikey_get_u64(&pi->input.keys[InRawOutPktLen])));
+
+ data->start = htonl(ikey_get_u32(&pi->input.keys[InFlowStartSec]));
+ data->end = htonl(ikey_get_u32(&pi->input.keys[InFlowEndSec]));
+
+ if (GET_FLAGS(pi->input.keys, InL4SPort) & ULOGD_RETF_VALID) {
+ data->sport = htons(ikey_get_u16(&pi->input.keys[InL4SPort]));
+ data->dport = htons(ikey_get_u16(&pi->input.keys[InL4DPort]));
+ }
+
+ data->aid = 0;
+ if (GET_FLAGS(pi->input.keys, InCtMark) & ULOGD_RETF_VALID)
+ data->aid = htonl(ikey_get_u32(&pi->input.keys[InCtMark]));
+
+ data->l4_proto = ikey_get_u8(&pi->input.keys[InIpProto]);
+ data->__padding = 0;
+
+ ulogd_log(ULOGD_DEBUG, "Got new packet (packets = %u, bytes = %u, flow = (%u, %u), saddr = %s, daddr = %s, sport = %u, dport = %u)\n",
+ ntohl(data->packets), ntohl(data->bytes), ntohl(data->start), ntohl(data->end),
+ inet_ntop(AF_INET, &data->saddr.s_addr, addr, sizeof(addr)),
+ inet_ntop(AF_INET, &data->daddr.s_addr, addr, sizeof(addr)),
+ ntohs(data->sport), ntohs(data->dport));
+
+ if ((ret = send_msgs(pi)) < 0)
+ return ret;
+
+ return ULOGD_IRET_OK;
+}
+
+static struct ulogd_plugin ipfix_plugin = {
+ .name = "IPFIX",
+ .input = {
+ .keys = ipfix_in_keys,
+ .num_keys = ARRAY_SIZE(ipfix_in_keys),
+ .type = ULOGD_DTYPE_PACKET | ULOGD_DTYPE_FLOW | ULOGD_DTYPE_SUM
+ },
+ .output = {
+ .type = ULOGD_DTYPE_SINK
+ },
+ .config_kset = (struct config_keyset *) &ipfix_kset,
+ .priv_size = sizeof(struct ipfix_priv),
+ .configure = ipfix_configure,
+ .start = ipfix_start,
+ .stop = ipfix_stop,
+ .interp = ipfix_interp,
+ .version = VERSION,
+};
+
+void __attribute__ ((constructor)) init(void);
+
+void init(void)
+{
+ ulogd_register_plugin(&ipfix_plugin);
+}
--
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