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