1 /*-
2  * Copyright (c) 2004 Lev Walkin <vlm@lionet.info>.
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  *
14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24  * SUCH DAMAGE.
25  *
26  * $Id: psrc-dynamic.c,v 1.2 2004/07/27 09:49:00 vlm Exp $
27  */
28 
29 #include "ipcad.h"
30 #include "opt.h"
31 #include "cfgvar.h"
32 #include <assert.h>
33 
34 int
init_packet_source_dynamic(packet_source_t * ps)35 init_packet_source_dynamic(packet_source_t *ps) {
36 	int fd = -1;
37 
38 	assert(ps->state != PST_INVALID);	/* Embryonic or Ready */
39 	assert(ps->iface_type == IFACE_DYNAMIC);	/* Don't cook crap */
40 
41 	/*
42 	 * Open routing socket.
43 	 */
44 	fd = ps->fd;
45 	if(fd != -1) {
46 		ps->state = PST_READY;
47 		return 0;
48 	} else {
49 		ps->state = PST_EMBRYONIC;
50 	}
51 
52 #ifdef	PF_ROUTE
53 	fd = socket(PF_ROUTE, SOCK_RAW, AF_INET);
54 #endif
55 	if(fd == -1) {
56 		fd = open("/proc/net/dev", O_RDONLY);
57 	}
58 	if(fd == -1)
59 		return -1;
60 
61 	/*
62 	 * Finish initialization of the structure.
63 	 */
64 	ps->fd = fd;
65 	ps->state = PST_READY;
66 
67 	return 0;
68 }
69 
70 void
print_stats_dynamic(FILE * f,packet_source_t * ps)71 print_stats_dynamic(FILE *f, packet_source_t *ps) {
72 
73 	assert(ps->iface_type == IFACE_DYNAMIC);
74 
75 	fprintf(f, "Interface %s: dynamic, forked %d\n",
76 		IFNameBySource(ps), genhash_count(ps->iface.dynamic.already_got));
77 }
78 
79