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-rw-r--r--print-cnfp.c474
1 files changed, 474 insertions, 0 deletions
diff --git a/print-cnfp.c b/print-cnfp.c
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+/* $OpenBSD: print-cnfp.c,v 1.2 1998/06/25 20:26:59 mickey Exp $ */
+
+/*
+ * Copyright (c) 1998 Michael Shalayeff
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by Michael Shalayeff.
+ * 4. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/* \summary: Cisco NetFlow protocol printer */
+
+/*
+ * Cisco NetFlow protocol
+ *
+ * See
+ *
+ * http://www.cisco.com/c/en/us/td/docs/net_mgmt/netflow_collection_engine/3-6/user/guide/format.html#wp1005892
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <netdissect-stdinc.h>
+
+#include <stdio.h>
+#include <string.h>
+
+#include "netdissect.h"
+#include "addrtoname.h"
+#include "extract.h"
+
+#include "tcp.h"
+#include "ipproto.h"
+
+struct nfhdr_v1 {
+ uint16_t version; /* version number */
+ uint16_t count; /* # of records */
+ uint32_t msys_uptime;
+ uint32_t utc_sec;
+ uint32_t utc_nsec;
+};
+
+struct nfrec_v1 {
+ struct in_addr src_ina;
+ struct in_addr dst_ina;
+ struct in_addr nhop_ina;
+ uint16_t input; /* SNMP index of input interface */
+ uint16_t output; /* SNMP index of output interface */
+ uint32_t packets; /* packets in the flow */
+ uint32_t octets; /* layer 3 octets in the packets of the flow */
+ uint32_t start_time; /* sys_uptime value at start of flow */
+ uint32_t last_time; /* sys_uptime value when last packet of flow was received */
+ uint16_t srcport; /* TCP/UDP source port or equivalent */
+ uint16_t dstport; /* TCP/UDP source port or equivalent */
+ uint16_t pad1; /* pad */
+ uint8_t proto; /* IP protocol type */
+ uint8_t tos; /* IP type of service */
+ uint8_t tcp_flags; /* cumulative OR of TCP flags */
+ uint8_t pad[3]; /* padding */
+ uint32_t reserved; /* unused */
+};
+
+struct nfhdr_v5 {
+ uint16_t version; /* version number */
+ uint16_t count; /* # of records */
+ uint32_t msys_uptime;
+ uint32_t utc_sec;
+ uint32_t utc_nsec;
+ uint32_t sequence; /* flow sequence number */
+ uint8_t engine_type; /* type of flow-switching engine */
+ uint8_t engine_id; /* slot number of the flow-switching engine */
+ uint16_t sampling_interval; /* sampling mode and interval */
+};
+
+struct nfrec_v5 {
+ struct in_addr src_ina;
+ struct in_addr dst_ina;
+ struct in_addr nhop_ina;
+ uint16_t input; /* SNMP index of input interface */
+ uint16_t output; /* SNMP index of output interface */
+ uint32_t packets; /* packets in the flow */
+ uint32_t octets; /* layer 3 octets in the packets of the flow */
+ uint32_t start_time; /* sys_uptime value at start of flow */
+ uint32_t last_time; /* sys_uptime value when last packet of flow was received */
+ uint16_t srcport; /* TCP/UDP source port or equivalent */
+ uint16_t dstport; /* TCP/UDP source port or equivalent */
+ uint8_t pad1; /* pad */
+ uint8_t tcp_flags; /* cumulative OR of TCP flags */
+ uint8_t proto; /* IP protocol type */
+ uint8_t tos; /* IP type of service */
+ uint16_t src_as; /* AS number of the source */
+ uint16_t dst_as; /* AS number of the destination */
+ uint8_t src_mask; /* source address mask bits */
+ uint8_t dst_mask; /* destination address prefix mask bits */
+ uint16_t pad2;
+ struct in_addr peer_nexthop; /* v6: IP address of the nexthop within the peer (FIB)*/
+};
+
+struct nfhdr_v6 {
+ uint16_t version; /* version number */
+ uint16_t count; /* # of records */
+ uint32_t msys_uptime;
+ uint32_t utc_sec;
+ uint32_t utc_nsec;
+ uint32_t sequence; /* v5 flow sequence number */
+ uint32_t reserved; /* v5 only */
+};
+
+struct nfrec_v6 {
+ struct in_addr src_ina;
+ struct in_addr dst_ina;
+ struct in_addr nhop_ina;
+ uint16_t input; /* SNMP index of input interface */
+ uint16_t output; /* SNMP index of output interface */
+ uint32_t packets; /* packets in the flow */
+ uint32_t octets; /* layer 3 octets in the packets of the flow */
+ uint32_t start_time; /* sys_uptime value at start of flow */
+ uint32_t last_time; /* sys_uptime value when last packet of flow was received */
+ uint16_t srcport; /* TCP/UDP source port or equivalent */
+ uint16_t dstport; /* TCP/UDP source port or equivalent */
+ uint8_t pad1; /* pad */
+ uint8_t tcp_flags; /* cumulative OR of TCP flags */
+ uint8_t proto; /* IP protocol type */
+ uint8_t tos; /* IP type of service */
+ uint16_t src_as; /* AS number of the source */
+ uint16_t dst_as; /* AS number of the destination */
+ uint8_t src_mask; /* source address mask bits */
+ uint8_t dst_mask; /* destination address prefix mask bits */
+ uint16_t flags;
+ struct in_addr peer_nexthop; /* v6: IP address of the nexthop within the peer (FIB)*/
+};
+
+static void
+cnfp_v1_print(netdissect_options *ndo, const u_char *cp)
+{
+ register const struct nfhdr_v1 *nh;
+ register const struct nfrec_v1 *nr;
+ const char *p_name;
+ int nrecs, ver;
+#if 0
+ time_t t;
+#endif
+
+ nh = (const struct nfhdr_v1 *)cp;
+ ND_TCHECK(*nh);
+
+ ver = EXTRACT_16BITS(&nh->version);
+ nrecs = EXTRACT_32BITS(&nh->count);
+#if 0
+ /*
+ * This is seconds since the UN*X epoch, and is followed by
+ * nanoseconds. XXX - format it, rather than just dumping the
+ * raw seconds-since-the-Epoch.
+ */
+ t = EXTRACT_32BITS(&nh->utc_sec);
+#endif
+
+ ND_PRINT((ndo, "NetFlow v%x, %u.%03u uptime, %u.%09u, ", ver,
+ EXTRACT_32BITS(&nh->msys_uptime)/1000,
+ EXTRACT_32BITS(&nh->msys_uptime)%1000,
+ EXTRACT_32BITS(&nh->utc_sec), EXTRACT_32BITS(&nh->utc_nsec)));
+
+ nr = (const struct nfrec_v1 *)&nh[1];
+
+ ND_PRINT((ndo, "%2u recs", nrecs));
+
+ for (; nrecs != 0; nr++, nrecs--) {
+ char buf[20];
+ char asbuf[20];
+
+ /*
+ * Make sure we have the entire record.
+ */
+ ND_TCHECK(*nr);
+ ND_PRINT((ndo, "\n started %u.%03u, last %u.%03u",
+ EXTRACT_32BITS(&nr->start_time)/1000,
+ EXTRACT_32BITS(&nr->start_time)%1000,
+ EXTRACT_32BITS(&nr->last_time)/1000,
+ EXTRACT_32BITS(&nr->last_time)%1000));
+
+ asbuf[0] = buf[0] = '\0';
+ ND_PRINT((ndo, "\n %s%s%s:%u ", intoa(nr->src_ina.s_addr), buf, asbuf,
+ EXTRACT_16BITS(&nr->srcport)));
+
+ ND_PRINT((ndo, "> %s%s%s:%u ", intoa(nr->dst_ina.s_addr), buf, asbuf,
+ EXTRACT_16BITS(&nr->dstport)));
+
+ ND_PRINT((ndo, ">> %s\n ", intoa(nr->nhop_ina.s_addr)));
+
+ if (!ndo->ndo_nflag && (p_name = netdb_protoname(nr->proto)) != NULL)
+ ND_PRINT((ndo, "%s ", p_name));
+ else
+ ND_PRINT((ndo, "%u ", nr->proto));
+
+ /* tcp flags for tcp only */
+ if (nr->proto == IPPROTO_TCP) {
+ int flags;
+ flags = nr->tcp_flags;
+ ND_PRINT((ndo, "%s%s%s%s%s%s%s",
+ flags & TH_FIN ? "F" : "",
+ flags & TH_SYN ? "S" : "",
+ flags & TH_RST ? "R" : "",
+ flags & TH_PUSH ? "P" : "",
+ flags & TH_ACK ? "A" : "",
+ flags & TH_URG ? "U" : "",
+ flags ? " " : ""));
+ }
+
+ buf[0]='\0';
+ ND_PRINT((ndo, "tos %u, %u (%u octets) %s",
+ nr->tos,
+ EXTRACT_32BITS(&nr->packets),
+ EXTRACT_32BITS(&nr->octets), buf));
+ }
+ return;
+
+trunc:
+ ND_PRINT((ndo, "[|cnfp]"));
+ return;
+}
+
+static void
+cnfp_v5_print(netdissect_options *ndo, const u_char *cp)
+{
+ register const struct nfhdr_v5 *nh;
+ register const struct nfrec_v5 *nr;
+ const char *p_name;
+ int nrecs, ver;
+#if 0
+ time_t t;
+#endif
+
+ nh = (const struct nfhdr_v5 *)cp;
+ ND_TCHECK(*nh);
+
+ ver = EXTRACT_16BITS(&nh->version);
+ nrecs = EXTRACT_32BITS(&nh->count);
+#if 0
+ /*
+ * This is seconds since the UN*X epoch, and is followed by
+ * nanoseconds. XXX - format it, rather than just dumping the
+ * raw seconds-since-the-Epoch.
+ */
+ t = EXTRACT_32BITS(&nh->utc_sec);
+#endif
+
+ ND_PRINT((ndo, "NetFlow v%x, %u.%03u uptime, %u.%09u, ", ver,
+ EXTRACT_32BITS(&nh->msys_uptime)/1000,
+ EXTRACT_32BITS(&nh->msys_uptime)%1000,
+ EXTRACT_32BITS(&nh->utc_sec), EXTRACT_32BITS(&nh->utc_nsec)));
+
+ ND_PRINT((ndo, "#%u, ", EXTRACT_32BITS(&nh->sequence)));
+ nr = (const struct nfrec_v5 *)&nh[1];
+
+ ND_PRINT((ndo, "%2u recs", nrecs));
+
+ for (; nrecs != 0; nr++, nrecs--) {
+ char buf[20];
+ char asbuf[20];
+
+ /*
+ * Make sure we have the entire record.
+ */
+ ND_TCHECK(*nr);
+ ND_PRINT((ndo, "\n started %u.%03u, last %u.%03u",
+ EXTRACT_32BITS(&nr->start_time)/1000,
+ EXTRACT_32BITS(&nr->start_time)%1000,
+ EXTRACT_32BITS(&nr->last_time)/1000,
+ EXTRACT_32BITS(&nr->last_time)%1000));
+
+ asbuf[0] = buf[0] = '\0';
+ snprintf(buf, sizeof(buf), "/%u", nr->src_mask);
+ snprintf(asbuf, sizeof(asbuf), ":%u",
+ EXTRACT_16BITS(&nr->src_as));
+ ND_PRINT((ndo, "\n %s%s%s:%u ", intoa(nr->src_ina.s_addr), buf, asbuf,
+ EXTRACT_16BITS(&nr->srcport)));
+
+ snprintf(buf, sizeof(buf), "/%d", nr->dst_mask);
+ snprintf(asbuf, sizeof(asbuf), ":%u",
+ EXTRACT_16BITS(&nr->dst_as));
+ ND_PRINT((ndo, "> %s%s%s:%u ", intoa(nr->dst_ina.s_addr), buf, asbuf,
+ EXTRACT_16BITS(&nr->dstport)));
+
+ ND_PRINT((ndo, ">> %s\n ", intoa(nr->nhop_ina.s_addr)));
+
+ if (!ndo->ndo_nflag && (p_name = netdb_protoname(nr->proto)) != NULL)
+ ND_PRINT((ndo, "%s ", p_name));
+ else
+ ND_PRINT((ndo, "%u ", nr->proto));
+
+ /* tcp flags for tcp only */
+ if (nr->proto == IPPROTO_TCP) {
+ int flags;
+ flags = nr->tcp_flags;
+ ND_PRINT((ndo, "%s%s%s%s%s%s%s",
+ flags & TH_FIN ? "F" : "",
+ flags & TH_SYN ? "S" : "",
+ flags & TH_RST ? "R" : "",
+ flags & TH_PUSH ? "P" : "",
+ flags & TH_ACK ? "A" : "",
+ flags & TH_URG ? "U" : "",
+ flags ? " " : ""));
+ }
+
+ buf[0]='\0';
+ ND_PRINT((ndo, "tos %u, %u (%u octets) %s",
+ nr->tos,
+ EXTRACT_32BITS(&nr->packets),
+ EXTRACT_32BITS(&nr->octets), buf));
+ }
+ return;
+
+trunc:
+ ND_PRINT((ndo, "[|cnfp]"));
+ return;
+}
+
+static void
+cnfp_v6_print(netdissect_options *ndo, const u_char *cp)
+{
+ register const struct nfhdr_v6 *nh;
+ register const struct nfrec_v6 *nr;
+ const char *p_name;
+ int nrecs, ver;
+#if 0
+ time_t t;
+#endif
+
+ nh = (const struct nfhdr_v6 *)cp;
+ ND_TCHECK(*nh);
+
+ ver = EXTRACT_16BITS(&nh->version);
+ nrecs = EXTRACT_32BITS(&nh->count);
+#if 0
+ /*
+ * This is seconds since the UN*X epoch, and is followed by
+ * nanoseconds. XXX - format it, rather than just dumping the
+ * raw seconds-since-the-Epoch.
+ */
+ t = EXTRACT_32BITS(&nh->utc_sec);
+#endif
+
+ ND_PRINT((ndo, "NetFlow v%x, %u.%03u uptime, %u.%09u, ", ver,
+ EXTRACT_32BITS(&nh->msys_uptime)/1000,
+ EXTRACT_32BITS(&nh->msys_uptime)%1000,
+ EXTRACT_32BITS(&nh->utc_sec), EXTRACT_32BITS(&nh->utc_nsec)));
+
+ ND_PRINT((ndo, "#%u, ", EXTRACT_32BITS(&nh->sequence)));
+ nr = (const struct nfrec_v6 *)&nh[1];
+
+ ND_PRINT((ndo, "%2u recs", nrecs));
+
+ for (; nrecs != 0; nr++, nrecs--) {
+ char buf[20];
+ char asbuf[20];
+
+ /*
+ * Make sure we have the entire record.
+ */
+ ND_TCHECK(*nr);
+ ND_PRINT((ndo, "\n started %u.%03u, last %u.%03u",
+ EXTRACT_32BITS(&nr->start_time)/1000,
+ EXTRACT_32BITS(&nr->start_time)%1000,
+ EXTRACT_32BITS(&nr->last_time)/1000,
+ EXTRACT_32BITS(&nr->last_time)%1000));
+
+ asbuf[0] = buf[0] = '\0';
+ snprintf(buf, sizeof(buf), "/%u", nr->src_mask);
+ snprintf(asbuf, sizeof(asbuf), ":%u",
+ EXTRACT_16BITS(&nr->src_as));
+ ND_PRINT((ndo, "\n %s%s%s:%u ", intoa(nr->src_ina.s_addr), buf, asbuf,
+ EXTRACT_16BITS(&nr->srcport)));
+
+ snprintf(buf, sizeof(buf), "/%d", nr->dst_mask);
+ snprintf(asbuf, sizeof(asbuf), ":%u",
+ EXTRACT_16BITS(&nr->dst_as));
+ ND_PRINT((ndo, "> %s%s%s:%u ", intoa(nr->dst_ina.s_addr), buf, asbuf,
+ EXTRACT_16BITS(&nr->dstport)));
+
+ ND_PRINT((ndo, ">> %s\n ", intoa(nr->nhop_ina.s_addr)));
+
+ if (!ndo->ndo_nflag && (p_name = netdb_protoname(nr->proto)) != NULL)
+ ND_PRINT((ndo, "%s ", p_name));
+ else
+ ND_PRINT((ndo, "%u ", nr->proto));
+
+ /* tcp flags for tcp only */
+ if (nr->proto == IPPROTO_TCP) {
+ int flags;
+ flags = nr->tcp_flags;
+ ND_PRINT((ndo, "%s%s%s%s%s%s%s",
+ flags & TH_FIN ? "F" : "",
+ flags & TH_SYN ? "S" : "",
+ flags & TH_RST ? "R" : "",
+ flags & TH_PUSH ? "P" : "",
+ flags & TH_ACK ? "A" : "",
+ flags & TH_URG ? "U" : "",
+ flags ? " " : ""));
+ }
+
+ buf[0]='\0';
+ snprintf(buf, sizeof(buf), "(%u<>%u encaps)",
+ (EXTRACT_16BITS(&nr->flags) >> 8) & 0xff,
+ (EXTRACT_16BITS(&nr->flags)) & 0xff);
+ ND_PRINT((ndo, "tos %u, %u (%u octets) %s",
+ nr->tos,
+ EXTRACT_32BITS(&nr->packets),
+ EXTRACT_32BITS(&nr->octets), buf));
+ }
+ return;
+
+trunc:
+ ND_PRINT((ndo, "[|cnfp]"));
+ return;
+}
+
+void
+cnfp_print(netdissect_options *ndo, const u_char *cp)
+{
+ int ver;
+
+ /*
+ * First 2 bytes are the version number.
+ */
+ ND_TCHECK2(*cp, 2);
+ ver = EXTRACT_16BITS(cp);
+ switch (ver) {
+
+ case 1:
+ cnfp_v1_print(ndo, cp);
+ break;
+
+ case 5:
+ cnfp_v5_print(ndo, cp);
+ break;
+
+ case 6:
+ cnfp_v6_print(ndo, cp);
+ break;
+
+ default:
+ ND_PRINT((ndo, "NetFlow v%x", ver));
+ break;
+ }
+ return;
+
+trunc:
+ ND_PRINT((ndo, "[|cnfp]"));
+ return;
+}
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