1/*
2 * (C)opyright 1992-1998 Darren Reed. (from tcplog)
3 *
4 * See the IPFILTER.LICENCE file for details on licencing.
5 */
6
7#include <stdio.h>
8#include <netdb.h>
9#include <ctype.h>
10#include <fcntl.h>
11#include <signal.h>
12#include <errno.h>
13#include <sys/types.h>
14#include <sys/time.h>
15#include <sys/timeb.h>
16#include <sys/socket.h>
17#include <sys/file.h>
18#include <sys/ioctl.h>
19#include <sys/stropts.h>
20
21#ifdef sun
22#include <sys/pfmod.h>
23#include <sys/bufmod.h>
24#endif
25#include <sys/dlpi.h>
26
27#include <net/if.h>
28#include <netinet/in.h>
29#include <netinet/in_systm.h>
30#include <netinet/ip.h>
31#include <netinet/if_ether.h>
32#include <netinet/ip_var.h>
33#include <netinet/udp.h>
34#include <netinet/udp_var.h>
35#include <netinet/tcp.h>
36
37#include "ipsend.h"
38
39#if !defined(lint)
40static const char sccsid[] = "@(#)sdlpi.c 1.3 10/30/95 (C)1995 Darren Reed";
41static const char rcsid[] = "@(#)$Id: sdlpi.c,v 2.1.4.2 2001/06/26 10:43:22 darrenr Exp $";
42#endif
43
44#define CHUNKSIZE 8192
45#define BUFSPACE (4*CHUNKSIZE)
46
47
48/*
49 * Be careful to only include those defined in the flags option for the
50 * interface are included in the header size.
51 */
52int initdevice(device, sport, tout)
53char *device;
54int sport, tout;
55{
56 char devname[16], *s, buf[256];
57 int i, fd;
58
59 (void) strcpy(devname, "/dev/");
60 (void) strncat(devname, device, sizeof(devname) - strlen(devname));
61
62 s = devname + 5;
63 while (*s && !isdigit(*s))
64 s++;
65 if (!*s)
66 {
67 fprintf(stderr, "bad device name %s\n", devname);
68 exit(-1);
69 }
70 i = atoi(s);
71 *s = '\0';
72 /*
73 * For writing
74 */
75 if ((fd = open(devname, O_RDWR)) < 0)
76 {
77 fprintf(stderr, "O_RDWR(1) ");
78 perror(devname);
79 exit(-1);
80 }
81
82 if (dlattachreq(fd, i) == -1 || dlokack(fd, buf) == -1)
83 {
84 fprintf(stderr, "DLPI error\n");
85 exit(-1);
86 }
87 dlbindreq(fd, ETHERTYPE_IP, 0, DL_CLDLS, 0, 0);
88 dlbindack(fd, buf);
89 /*
90 * write full headers
91 */
92#ifdef sun /* we require RAW DLPI mode, which is a Sun extension */
93 if (strioctl(fd, DLIOCRAW, -1, 0, NULL) == -1)
94 {
95 fprintf(stderr, "DLIOCRAW error\n");
96 exit(-1);
97 }
98#else
99you lose
100#endif
101 return fd;
102}
103
104
105/*
106 * output an IP packet onto a fd opened for /dev/nit
107 */
108int sendip(fd, pkt, len)
109int fd, len;
110char *pkt;
111{
112 struct strbuf dbuf, *dp = &dbuf;
113
114 /*
115 * construct NIT STREAMS messages, first control then data.
116 */
117 dp->buf = pkt;
118 dp->len = len;
119 dp->maxlen = dp->len;
120
121 if (putmsg(fd, NULL, dp, 0) == -1)
122 {
123 perror("putmsg");
124 return -1;
125 }
126 if (ioctl(fd, I_FLUSH, FLUSHW) == -1)
127 {
128 perror("I_FLUSHW");
129 return -1;
130 }
131 return len;
132}