3 * sock.c (C) 1995-1998 Darren Reed
5 * See the IPFILTER.LICENCE file for details on licencing.
9 static const char sccsid[] = "@(#)sock.c 1.2 1/11/96 (C)1995 Darren Reed";
10 static const char rcsid[] = "@(#)$Id$";
12 #include <sys/param.h>
13 #include <sys/types.h>
16 #if defined(__NetBSD__) && defined(__vax__)
18 * XXX need to declare boolean_t for _KERNEL <sys/files.h>
19 * which ends up including <sys/device.h> for vax. See PR#32907
20 * for further details.
22 typedef int boolean_t;
27 #if (__FreeBSD_version >= 300000)
28 # include <sys/dirent.h>
34 # include <machine/lock.h>
44 # include <sys/smp_lock.h>
46 # include <sys/file.h>
56 #include <sys/socket.h>
57 #include <sys/socketvar.h>
59 #if !defined(ultrix) && !defined(hpux) && !defined(__osf__)
63 #include <sys/systm.h>
64 #include <sys/session.h>
67 #include <sys/sysctl.h>
68 #include <sys/filedesc.h>
72 #include <netinet/in.h>
73 #include <netinet/in_systm.h>
74 #include <netinet/ip.h>
75 #include <netinet/tcp.h>
78 # include <net/route.h>
80 #include <netinet/ip_var.h>
82 #include <netinet/in_pcb.h>
83 #include <netinet/tcp_timer.h>
85 #include <netinet/tcp_var.h>
100 # define KMEM _PATH_KMEM
105 # define KERNEL _PATH_UNIX
109 # define KMEM "/dev/kmem"
112 # define KERNEL "/vmunix"
117 static struct proc *getproc __P((void));
119 static struct kinfo_proc *getproc __P((void));
123 int kmemcpy(buf, pos, n)
129 off_t offset = (u_long)pos;
132 kfd = open(KMEM, O_RDONLY);
134 if (lseek(kfd, offset, SEEK_SET) == -1)
139 if (read(kfd, buf, n) == -1)
147 struct nlist names[4] = {
159 static struct proc *getproc()
162 pid_t pid = getpid();
165 n = nlist(KERNEL, names);
168 fprintf(stderr, "nlist(%#x) == %d\n", names, n);
171 if (KMCPY(&nproc, names[1].n_value, sizeof(nproc)) == -1)
173 fprintf(stderr, "read nproc (%#x)\n", names[1].n_value);
176 siz = nproc * sizeof(struct proc);
177 if (KMCPY(&p, names[0].n_value, sizeof(p)) == -1)
179 fprintf(stderr, "read(%#x,%#x,%d) proc\n",
180 names[0].n_value, &p, sizeof(p));
183 proc = (struct proc *)malloc(siz);
184 if (KMCPY(proc, p, siz) == -1)
186 fprintf(stderr, "read(%#x,%#x,%d) proc\n",
193 for (n = nproc; n; n--, p++)
203 struct tcpcb *find_tcp(fd, ti)
214 if (!(p = getproc()))
216 up = (struct user *)malloc(sizeof(*up));
218 if (KMCPY(up, p->p_uarea, sizeof(*up)) == -1)
220 fprintf(stderr, "read(%#x,%#x) failed\n", p, p->p_uarea);
224 if (KMCPY(up, names[2].n_value, sizeof(*up)) == -1)
226 fprintf(stderr, "read(%#x,%#x) failed\n", p, names[2].n_value);
231 o = (struct file **)calloc(up->u_lastfile + 1, sizeof(*o));
232 if (KMCPY(o, up->u_ofile, (up->u_lastfile + 1) * sizeof(*o)) == -1)
234 fprintf(stderr, "read(%#x,%#x,%d) - u_ofile - failed\n",
235 up->u_ofile, o, sizeof(*o));
238 f = (struct file *)calloc(1, sizeof(*f));
239 if (KMCPY(f, o[fd], sizeof(*f)) == -1)
241 fprintf(stderr, "read(%#x,%#x,%d) - o[fd] - failed\n",
242 up->u_ofile[fd], f, sizeof(*f));
246 s = (struct socket *)calloc(1, sizeof(*s));
247 if (KMCPY(s, f->f_data, sizeof(*s)) == -1)
249 fprintf(stderr, "read(%#x,%#x,%d) - f_data - failed\n",
250 o[fd], s, sizeof(*s));
254 i = (struct inpcb *)calloc(1, sizeof(*i));
255 if (KMCPY(i, s->so_pcb, sizeof(*i)) == -1)
257 fprintf(stderr, "kvm_read(%#x,%#x,%d) - so_pcb - failed\n",
258 s->so_pcb, i, sizeof(*i));
262 t = (struct tcpcb *)calloc(1, sizeof(*t));
263 if (KMCPY(t, i->inp_ppcb, sizeof(*t)) == -1)
265 fprintf(stderr, "read(%#x,%#x,%d) - inp_ppcb - failed\n",
266 i->inp_ppcb, t, sizeof(*t));
269 return (struct tcpcb *)i->inp_ppcb;
272 static struct kinfo_proc *getproc()
274 static struct kinfo_proc kp;
275 pid_t pid = getpid();
281 mib[2] = KERN_PROC_PID;
285 if (sysctl(mib, 4, &kp, &n, NULL, 0) == -1)
294 struct tcpcb *find_tcp(tfd, ti)
302 struct kinfo_proc *p;
305 if (!(p = getproc()))
308 fd = (struct filedesc *)malloc(sizeof(*fd));
311 #if defined( __FreeBSD_version) && __FreeBSD_version >= 500013
312 if (KMCPY(fd, p->ki_fd, sizeof(*fd)) == -1)
314 fprintf(stderr, "read(%#lx,%#lx) failed\n",
315 (u_long)p, (u_long)p->ki_fd);
320 if (KMCPY(fd, p->kp_proc.p_fd, sizeof(*fd)) == -1)
322 fprintf(stderr, "read(%#lx,%#lx) failed\n",
323 (u_long)p, (u_long)p->kp_proc.p_fd);
335 o = (struct file **)calloc(fd->fd_lastfile + 1, sizeof(*o));
336 if (KMCPY(o, fd->fd_ofiles, (fd->fd_lastfile + 1) * sizeof(*o)) == -1)
338 fprintf(stderr, "read(%#lx,%#lx,%lu) - u_ofile - failed\n",
339 (u_long)fd->fd_ofiles, (u_long)o, (u_long)sizeof(*o));
342 f = (struct file *)calloc(1, sizeof(*f));
343 if (KMCPY(f, o[tfd], sizeof(*f)) == -1)
345 fprintf(stderr, "read(%#lx,%#lx,%lu) - o[tfd] - failed\n",
346 (u_long)o[tfd], (u_long)f, (u_long)sizeof(*f));
350 s = (struct socket *)calloc(1, sizeof(*s));
351 if (KMCPY(s, f->f_data, sizeof(*s)) == -1)
353 fprintf(stderr, "read(%#lx,%#lx,%lu) - f_data - failed\n",
354 (u_long)f->f_data, (u_long)s, (u_long)sizeof(*s));
358 i = (struct inpcb *)calloc(1, sizeof(*i));
359 if (KMCPY(i, s->so_pcb, sizeof(*i)) == -1)
361 fprintf(stderr, "kvm_read(%#lx,%#lx,%lu) - so_pcb - failed\n",
362 (u_long)s->so_pcb, (u_long)i, (u_long)sizeof(*i));
366 t = (struct tcpcb *)calloc(1, sizeof(*t));
367 if (KMCPY(t, i->inp_ppcb, sizeof(*t)) == -1)
369 fprintf(stderr, "read(%#lx,%#lx,%lu) - inp_ppcb - failed\n",
370 (u_long)i->inp_ppcb, (u_long)t, (u_long)sizeof(*t));
373 return (struct tcpcb *)i->inp_ppcb;
388 #endif /* BSD < 199301 */
390 int do_socket(dev, mtu, ti, gwip)
396 struct sockaddr_in rsin, lsin;
397 struct tcpcb *t, tcb;
401 printf("Dest. Port: %d\n", ti->ti_dport);
403 fd = socket(AF_INET, SOCK_STREAM, 0);
410 if (fcntl(fd, F_SETFL, FNDELAY) == -1)
416 bzero((char *)&lsin, sizeof(lsin));
417 lsin.sin_family = AF_INET;
418 bcopy((char *)&ti->ti_src, (char *)&lsin.sin_addr,
419 sizeof(struct in_addr));
420 if (bind(fd, (struct sockaddr *)&lsin, sizeof(lsin)) == -1)
426 (void) getsockname(fd, (struct sockaddr *)&lsin, &len);
427 ti->ti_sport = lsin.sin_port;
428 printf("sport %d\n", ntohs(lsin.sin_port));
430 nfd = initdevice(dev, 1);
434 if (!(t = find_tcp(fd, ti)))
437 bzero((char *)&rsin, sizeof(rsin));
438 rsin.sin_family = AF_INET;
439 bcopy((char *)&ti->ti_dst, (char *)&rsin.sin_addr,
440 sizeof(struct in_addr));
441 rsin.sin_port = ti->ti_dport;
442 if (connect(fd, (struct sockaddr *)&rsin, sizeof(rsin)) == -1 &&
443 errno != EINPROGRESS)
448 KMCPY(&tcb, t, sizeof(tcb));
449 ti->ti_win = tcb.rcv_adv;
450 ti->ti_seq = tcb.snd_nxt - 1;
451 ti->ti_ack = tcb.rcv_nxt;
453 if (send_tcp(nfd, mtu, (ip_t *)ti, gwip) == -1)
455 (void)write(fd, "Hello World\n", 12);