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>
33 # include <machine/lock.h>
43 # include <sys/smp_lock.h>
45 # include <sys/file.h>
54 #include <sys/socket.h>
55 #include <sys/socketvar.h>
57 #if !defined(ultrix) && !defined(hpux) && !defined(__osf__)
61 #include <sys/systm.h>
62 #include <sys/session.h>
65 #include <sys/sysctl.h>
66 #include <sys/filedesc.h>
70 #include <netinet/in.h>
71 #include <netinet/in_systm.h>
72 #include <netinet/ip.h>
73 #include <netinet/tcp.h>
75 # include <net/route.h>
76 #include <netinet/ip_var.h>
78 #include <netinet/in_pcb.h>
79 #include <netinet/tcp_timer.h>
81 #include <netinet/tcp_var.h>
96 # define KMEM _PATH_KMEM
101 # define KERNEL _PATH_UNIX
105 # define KMEM "/dev/kmem"
108 # define KERNEL "/vmunix"
113 static struct proc *getproc __P((void));
115 static struct kinfo_proc *getproc __P((void));
119 int kmemcpy(buf, pos, n)
125 off_t offset = (u_long)pos;
128 kfd = open(KMEM, O_RDONLY);
130 if (lseek(kfd, offset, SEEK_SET) == -1)
135 if (read(kfd, buf, n) == -1)
143 struct nlist names[4] = {
155 static struct proc *getproc()
158 pid_t pid = getpid();
161 n = nlist(KERNEL, names);
164 fprintf(stderr, "nlist(%#x) == %d\n", names, n);
167 if (KMCPY(&nproc, names[1].n_value, sizeof(nproc)) == -1)
169 fprintf(stderr, "read nproc (%#x)\n", names[1].n_value);
172 siz = nproc * sizeof(struct proc);
173 if (KMCPY(&p, names[0].n_value, sizeof(p)) == -1)
175 fprintf(stderr, "read(%#x,%#x,%d) proc\n",
176 names[0].n_value, &p, sizeof(p));
179 proc = (struct proc *)malloc(siz);
180 if (KMCPY(proc, p, siz) == -1)
182 fprintf(stderr, "read(%#x,%#x,%d) proc\n",
189 for (n = nproc; n; n--, p++)
199 struct tcpcb *find_tcp(fd, ti)
210 if (!(p = getproc()))
212 up = (struct user *)malloc(sizeof(*up));
214 if (KMCPY(up, p->p_uarea, sizeof(*up)) == -1)
216 fprintf(stderr, "read(%#x,%#x) failed\n", p, p->p_uarea);
220 if (KMCPY(up, names[2].n_value, sizeof(*up)) == -1)
222 fprintf(stderr, "read(%#x,%#x) failed\n", p, names[2].n_value);
227 o = (struct file **)calloc(up->u_lastfile + 1, sizeof(*o));
228 if (KMCPY(o, up->u_ofile, (up->u_lastfile + 1) * sizeof(*o)) == -1)
230 fprintf(stderr, "read(%#x,%#x,%d) - u_ofile - failed\n",
231 up->u_ofile, o, sizeof(*o));
234 f = (struct file *)calloc(1, sizeof(*f));
235 if (KMCPY(f, o[fd], sizeof(*f)) == -1)
237 fprintf(stderr, "read(%#x,%#x,%d) - o[fd] - failed\n",
238 up->u_ofile[fd], f, sizeof(*f));
242 s = (struct socket *)calloc(1, sizeof(*s));
243 if (KMCPY(s, f->f_data, sizeof(*s)) == -1)
245 fprintf(stderr, "read(%#x,%#x,%d) - f_data - failed\n",
246 o[fd], s, sizeof(*s));
250 i = (struct inpcb *)calloc(1, sizeof(*i));
251 if (KMCPY(i, s->so_pcb, sizeof(*i)) == -1)
253 fprintf(stderr, "kvm_read(%#x,%#x,%d) - so_pcb - failed\n",
254 s->so_pcb, i, sizeof(*i));
258 t = (struct tcpcb *)calloc(1, sizeof(*t));
259 if (KMCPY(t, i->inp_ppcb, sizeof(*t)) == -1)
261 fprintf(stderr, "read(%#x,%#x,%d) - inp_ppcb - failed\n",
262 i->inp_ppcb, t, sizeof(*t));
265 return (struct tcpcb *)i->inp_ppcb;
268 static struct kinfo_proc *getproc()
270 static struct kinfo_proc kp;
271 pid_t pid = getpid();
277 mib[2] = KERN_PROC_PID;
281 if (sysctl(mib, 4, &kp, &n, NULL, 0) == -1)
290 struct tcpcb *find_tcp(tfd, ti)
298 struct kinfo_proc *p;
301 if (!(p = getproc()))
304 fd = (struct filedesc *)malloc(sizeof(*fd));
307 #if defined( __FreeBSD_version) && __FreeBSD_version >= 500013
308 if (KMCPY(fd, p->ki_fd, sizeof(*fd)) == -1)
310 fprintf(stderr, "read(%#lx,%#lx) failed\n",
311 (u_long)p, (u_long)p->ki_fd);
316 if (KMCPY(fd, p->kp_proc.p_fd, sizeof(*fd)) == -1)
318 fprintf(stderr, "read(%#lx,%#lx) failed\n",
319 (u_long)p, (u_long)p->kp_proc.p_fd);
331 o = (struct file **)calloc(fd->fd_lastfile + 1, sizeof(*o));
332 if (KMCPY(o, fd->fd_ofiles, (fd->fd_lastfile + 1) * sizeof(*o)) == -1)
334 fprintf(stderr, "read(%#lx,%#lx,%lu) - u_ofile - failed\n",
335 (u_long)fd->fd_ofiles, (u_long)o, (u_long)sizeof(*o));
338 f = (struct file *)calloc(1, sizeof(*f));
339 if (KMCPY(f, o[tfd], sizeof(*f)) == -1)
341 fprintf(stderr, "read(%#lx,%#lx,%lu) - o[tfd] - failed\n",
342 (u_long)o[tfd], (u_long)f, (u_long)sizeof(*f));
346 s = (struct socket *)calloc(1, sizeof(*s));
347 if (KMCPY(s, f->f_data, sizeof(*s)) == -1)
349 fprintf(stderr, "read(%#lx,%#lx,%lu) - f_data - failed\n",
350 (u_long)f->f_data, (u_long)s, (u_long)sizeof(*s));
354 i = (struct inpcb *)calloc(1, sizeof(*i));
355 if (KMCPY(i, s->so_pcb, sizeof(*i)) == -1)
357 fprintf(stderr, "kvm_read(%#lx,%#lx,%lu) - so_pcb - failed\n",
358 (u_long)s->so_pcb, (u_long)i, (u_long)sizeof(*i));
362 t = (struct tcpcb *)calloc(1, sizeof(*t));
363 if (KMCPY(t, i->inp_ppcb, sizeof(*t)) == -1)
365 fprintf(stderr, "read(%#lx,%#lx,%lu) - inp_ppcb - failed\n",
366 (u_long)i->inp_ppcb, (u_long)t, (u_long)sizeof(*t));
369 return (struct tcpcb *)i->inp_ppcb;
384 #endif /* BSD < 199301 */
386 int do_socket(dev, mtu, ti, gwip)
392 struct sockaddr_in rsin, lsin;
393 struct tcpcb *t, tcb;
397 printf("Dest. Port: %d\n", ti->ti_dport);
399 fd = socket(AF_INET, SOCK_STREAM, 0);
406 if (fcntl(fd, F_SETFL, FNDELAY) == -1)
412 bzero((char *)&lsin, sizeof(lsin));
413 lsin.sin_family = AF_INET;
414 bcopy((char *)&ti->ti_src, (char *)&lsin.sin_addr,
415 sizeof(struct in_addr));
416 if (bind(fd, (struct sockaddr *)&lsin, sizeof(lsin)) == -1)
422 (void) getsockname(fd, (struct sockaddr *)&lsin, &len);
423 ti->ti_sport = lsin.sin_port;
424 printf("sport %d\n", ntohs(lsin.sin_port));
426 nfd = initdevice(dev, 1);
430 if (!(t = find_tcp(fd, ti)))
433 bzero((char *)&rsin, sizeof(rsin));
434 rsin.sin_family = AF_INET;
435 bcopy((char *)&ti->ti_dst, (char *)&rsin.sin_addr,
436 sizeof(struct in_addr));
437 rsin.sin_port = ti->ti_dport;
438 if (connect(fd, (struct sockaddr *)&rsin, sizeof(rsin)) == -1 &&
439 errno != EINPROGRESS)
444 KMCPY(&tcb, t, sizeof(tcb));
445 ti->ti_win = tcb.rcv_adv;
446 ti->ti_seq = tcb.snd_nxt - 1;
447 ti->ti_ack = tcb.rcv_nxt;
449 if (send_tcp(nfd, mtu, (ip_t *)ti, gwip) == -1)
451 (void)write(fd, "Hello World\n", 12);