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282 lines
6.9 KiB
C
282 lines
6.9 KiB
C
/*-
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* Copyright (c) 2004-2005 Gleb Smirnoff <glebius@FreeBSD.org>
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* Copyright (c) 2001-2003 Roman V. Palagin <romanp@unshadow.net>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $SourceForge: flowctl.c,v 1.15 2004/08/31 20:24:58 glebius Exp $
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*/
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#ifndef lint
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static const char rcs_id[] =
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"@(#) $FreeBSD$";
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#endif
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#include <sys/types.h>
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#include <sys/time.h>
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#include <sys/socket.h>
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#include <sys/queue.h>
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#include <net/if.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <err.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <netgraph.h>
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#include <netgraph/netflow/ng_netflow.h>
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#define CISCO_SH_FLOW_HEADER "SrcIf SrcIPaddress DstIf DstIPaddress Pr SrcP DstP Pkts\n"
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#define CISCO_SH_FLOW "%-13s %-15s %-13s %-15s %2u %4.4x %4.4x %6lu\n"
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#define CISCO_SH_VERB_FLOW_HEADER "SrcIf SrcIPaddress DstIf DstIPaddress Pr TOS Flgs Pkts\n" \
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"Port Msk AS Port Msk AS NextHop B/Pk Active\n"
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#define CISCO_SH_VERB_FLOW "%-14s %-15s %-14s %-15s %2u %3x %4x %6lu\n" \
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"%4.4x /%-2u %-5u %4.4x /%-2u %-5u %-15s %9u %8u\n\n"
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static int flow_cache_print(struct ngnf_flows *recs);
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static int flow_cache_print_verbose(struct ngnf_flows *recs);
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static int ctl_show(int, char **);
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static void help(void);
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static void execute_command(int, char **);
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struct ip_ctl_cmd {
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char *cmd_name;
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int (*cmd_func)(int argc, char **argv);
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};
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struct ip_ctl_cmd cmds[] = {
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{"show", ctl_show},
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{NULL, NULL},
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};
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int cs;
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char ng_nodename[NG_PATHLEN + 1];
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int
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main(int argc, char **argv)
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{
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int c;
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char sname[NG_NODESIZ];
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int rcvbuf = SORCVBUF_SIZE;
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char *ng_name;
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/* parse options */
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while ((c = getopt(argc, argv, "d:")) != -1) {
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switch (c) {
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case 'd': /* set libnetgraph debug level. */
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NgSetDebug(atoi(optarg));
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break;
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}
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}
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argc -= optind;
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argv += optind;
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ng_name = argv[0];
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if (ng_name == NULL)
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help();
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argc--;
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argv++;
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snprintf(ng_nodename, sizeof(ng_nodename), "%s:", ng_name);
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/* create control socket. */
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snprintf(sname, sizeof(sname), "flowctl%i", getpid());
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if (NgMkSockNode(sname, &cs, NULL) == -1)
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err(1, "NgMkSockNode");
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/* set receive buffer size */
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if (setsockopt(cs, SOL_SOCKET, SO_RCVBUF, &rcvbuf, sizeof(int)) == -1)
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err(1, "setsockopt(SOL_SOCKET, SO_RCVBUF)");
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/* parse and execute command */
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execute_command(argc, argv);
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close(cs);
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exit(0);
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}
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static void
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execute_command(int argc, char **argv)
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{
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int cindex = -1;
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int i;
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if (!argc)
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help();
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for (i = 0; cmds[i].cmd_name != NULL; i++)
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if (!strncmp(argv[0], cmds[i].cmd_name, strlen(argv[0]))) {
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if (cindex != -1)
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errx(1, "ambiguous command: %s", argv[0]);
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cindex = i;
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}
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if (cindex == -1)
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errx(1, "bad command: %s", argv[0]);
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argc--;
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argv++;
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(*cmds[cindex].cmd_func)(argc, argv);
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}
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static int
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ctl_show(int argc, char **argv)
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{
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struct ng_mesg *ng_mesg;
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struct ngnf_flows *data;
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char path[NG_PATHLEN + 1];
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int token, nread, last = 0;
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int verbose = 0;
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if (argc > 0 && !strncmp(argv[0], "verbose", strlen(argv[0])))
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verbose = 1;
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ng_mesg = alloca(SORCVBUF_SIZE);
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if (verbose)
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printf(CISCO_SH_VERB_FLOW_HEADER);
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else
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printf(CISCO_SH_FLOW_HEADER);
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for (;;) {
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/* request set of accounting records */
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token = NgSendMsg(cs, ng_nodename, NGM_NETFLOW_COOKIE,
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NGM_NETFLOW_SHOW, (void *)&last, sizeof(last));
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if (token == -1)
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err(1, "NgSendMsg(NGM_NETFLOW_SHOW)");
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/* read reply */
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nread = NgRecvMsg(cs, ng_mesg, SORCVBUF_SIZE, path);
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if (nread == -1)
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err(1, "NgRecvMsg() failed");
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if (ng_mesg->header.token != token)
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err(1, "NgRecvMsg(NGM_NETFLOW_SHOW): token mismatch");
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data = (struct ngnf_flows*)ng_mesg->data;
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if ((ng_mesg->header.arglen < (sizeof(*data))) ||
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(ng_mesg->header.arglen < (sizeof(*data) +
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(data->nentries * sizeof(struct flow_entry_data)))))
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err(1, "NgRecvMsg(NGM_NETFLOW_SHOW): arglen too small");
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if (verbose)
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(void )flow_cache_print_verbose(data);
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else
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(void )flow_cache_print(data);
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if (data->last != 0)
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last = data->last;
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else
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break;
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}
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return (0);
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}
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static int
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flow_cache_print(struct ngnf_flows *recs)
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{
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struct flow_entry_data *fle;
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char src[INET_ADDRSTRLEN], dst[INET_ADDRSTRLEN];
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char src_if[IFNAMSIZ], dst_if[IFNAMSIZ];
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int i;
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/* quick check */
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if (recs->nentries == 0)
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return (0);
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fle = recs->entries;
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for (i = 0; i < recs->nentries; i++, fle++) {
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inet_ntop(AF_INET, &fle->r.r_src, src, sizeof(src));
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inet_ntop(AF_INET, &fle->r.r_dst, dst, sizeof(dst));
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printf(CISCO_SH_FLOW,
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if_indextoname(fle->fle_i_ifx, src_if),
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src,
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if_indextoname(fle->fle_o_ifx, dst_if),
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dst,
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fle->r.r_ip_p,
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ntohs(fle->r.r_sport),
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ntohs(fle->r.r_dport),
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fle->packets);
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}
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return (i);
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}
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static int
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flow_cache_print_verbose(struct ngnf_flows *recs)
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{
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struct flow_entry_data *fle;
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char src[INET_ADDRSTRLEN], dst[INET_ADDRSTRLEN], next[INET_ADDRSTRLEN];
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char src_if[IFNAMSIZ], dst_if[IFNAMSIZ];
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int i;
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/* quick check */
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if (recs->nentries == 0)
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return (0);
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fle = recs->entries;
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for (i = 0; i < recs->nentries; i++, fle++) {
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inet_ntop(AF_INET, &fle->r.r_src, src, sizeof(src));
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inet_ntop(AF_INET, &fle->r.r_dst, dst, sizeof(dst));
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inet_ntop(AF_INET, &fle->next_hop, next, sizeof(next));
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printf(CISCO_SH_VERB_FLOW,
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if_indextoname(fle->fle_i_ifx, src_if),
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src,
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if_indextoname(fle->fle_o_ifx, dst_if),
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dst,
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fle->r.r_ip_p,
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fle->r.r_tos,
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fle->tcp_flags,
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fle->packets,
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ntohs(fle->r.r_sport),
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fle->src_mask,
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0,
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ntohs(fle->r.r_dport),
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fle->dst_mask,
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0,
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next,
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(u_int)(fle->bytes / fle->packets),
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0);
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}
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return (i);
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}
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static void
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help(void)
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{
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extern char *__progname;
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fprintf(stderr, "usage: %s [-d level] nodename command\n", __progname);
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exit (0);
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}
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