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>
81 #include <netinet/in_pcb.h>
82 #include <netinet/tcp_timer.h>
83 #include <netinet/tcp_var.h>
98 # define KMEM _PATH_KMEM
103 # define KERNEL _PATH_UNIX
107 # define KMEM "/dev/kmem"
110 # define KERNEL "/vmunix"
115 static struct proc *getproc __P((void));
117 static struct kinfo_proc *getproc __P((void));
121 int kmemcpy(buf, pos, n)
127 off_t offset = (u_long)pos;
130 kfd = open(KMEM, O_RDONLY);
132 if (lseek(kfd, offset, SEEK_SET) == -1)
137 if (read(kfd, buf, n) == -1)
145 struct nlist names[4] = {
157 static struct proc *getproc()
160 pid_t pid = getpid();
163 n = nlist(KERNEL, names);
166 fprintf(stderr, "nlist(%#x) == %d\n", names, n);
169 if (KMCPY(&nproc, names[1].n_value, sizeof(nproc)) == -1)
171 fprintf(stderr, "read nproc (%#x)\n", names[1].n_value);
174 siz = nproc * sizeof(struct proc);
175 if (KMCPY(&p, names[0].n_value, sizeof(p)) == -1)
177 fprintf(stderr, "read(%#x,%#x,%d) proc\n",
178 names[0].n_value, &p, sizeof(p));
181 proc = (struct proc *)malloc(siz);
182 if (KMCPY(proc, p, siz) == -1)
184 fprintf(stderr, "read(%#x,%#x,%d) proc\n",
191 for (n = nproc; n; n--, p++)
201 struct tcpcb *find_tcp(fd, ti)
212 if (!(p = getproc()))
214 up = (struct user *)malloc(sizeof(*up));
216 if (KMCPY(up, p->p_uarea, sizeof(*up)) == -1)
218 fprintf(stderr, "read(%#x,%#x) failed\n", p, p->p_uarea);
222 if (KMCPY(up, names[2].n_value, sizeof(*up)) == -1)
224 fprintf(stderr, "read(%#x,%#x) failed\n", p, names[2].n_value);
229 o = (struct file **)calloc(1, sizeof(*o) * (up->u_lastfile + 1));
230 if (KMCPY(o, up->u_ofile, (up->u_lastfile + 1) * sizeof(*o)) == -1)
232 fprintf(stderr, "read(%#x,%#x,%d) - u_ofile - failed\n",
233 up->u_ofile, o, sizeof(*o));
236 f = (struct file *)calloc(1, sizeof(*f));
237 if (KMCPY(f, o[fd], sizeof(*f)) == -1)
239 fprintf(stderr, "read(%#x,%#x,%d) - o[fd] - failed\n",
240 up->u_ofile[fd], f, sizeof(*f));
244 s = (struct socket *)calloc(1, sizeof(*s));
245 if (KMCPY(s, f->f_data, sizeof(*s)) == -1)
247 fprintf(stderr, "read(%#x,%#x,%d) - f_data - failed\n",
248 o[fd], s, sizeof(*s));
252 i = (struct inpcb *)calloc(1, sizeof(*i));
253 if (KMCPY(i, s->so_pcb, sizeof(*i)) == -1)
255 fprintf(stderr, "kvm_read(%#x,%#x,%d) - so_pcb - failed\n",
256 s->so_pcb, i, sizeof(*i));
260 t = (struct tcpcb *)calloc(1, sizeof(*t));
261 if (KMCPY(t, i->inp_ppcb, sizeof(*t)) == -1)
263 fprintf(stderr, "read(%#x,%#x,%d) - inp_ppcb - failed\n",
264 i->inp_ppcb, t, sizeof(*t));
267 return (struct tcpcb *)i->inp_ppcb;
270 static struct kinfo_proc *getproc()
272 static struct kinfo_proc kp;
273 pid_t pid = getpid();
279 mib[2] = KERN_PROC_PID;
283 if (sysctl(mib, 4, &kp, &n, NULL, 0) == -1)
292 struct tcpcb *find_tcp(tfd, ti)
300 struct kinfo_proc *p;
303 if (!(p = getproc()))
306 fd = (struct filedesc *)malloc(sizeof(*fd));
309 #if defined( __FreeBSD_version) && __FreeBSD_version >= 500013
310 if (KMCPY(fd, p->ki_fd, sizeof(*fd)) == -1)
312 fprintf(stderr, "read(%#lx,%#lx) failed\n",
313 (u_long)p, (u_long)p->ki_fd);
318 if (KMCPY(fd, p->kp_proc.p_fd, sizeof(*fd)) == -1)
320 fprintf(stderr, "read(%#lx,%#lx) failed\n",
321 (u_long)p, (u_long)p->kp_proc.p_fd);
333 o = (struct file **)calloc(1, sizeof(*o) * (fd->fd_lastfile + 1));
334 if (KMCPY(o, fd->fd_ofiles, (fd->fd_lastfile + 1) * sizeof(*o)) == -1)
336 fprintf(stderr, "read(%#lx,%#lx,%lu) - u_ofile - failed\n",
337 (u_long)fd->fd_ofiles, (u_long)o, (u_long)sizeof(*o));
340 f = (struct file *)calloc(1, sizeof(*f));
341 if (KMCPY(f, o[tfd], sizeof(*f)) == -1)
343 fprintf(stderr, "read(%#lx,%#lx,%lu) - o[tfd] - failed\n",
344 (u_long)o[tfd], (u_long)f, (u_long)sizeof(*f));
348 s = (struct socket *)calloc(1, sizeof(*s));
349 if (KMCPY(s, f->f_data, sizeof(*s)) == -1)
351 fprintf(stderr, "read(%#lx,%#lx,%lu) - f_data - failed\n",
352 (u_long)f->f_data, (u_long)s, (u_long)sizeof(*s));
356 i = (struct inpcb *)calloc(1, sizeof(*i));
357 if (KMCPY(i, s->so_pcb, sizeof(*i)) == -1)
359 fprintf(stderr, "kvm_read(%#lx,%#lx,%lu) - so_pcb - failed\n",
360 (u_long)s->so_pcb, (u_long)i, (u_long)sizeof(*i));
364 t = (struct tcpcb *)calloc(1, sizeof(*t));
365 if (KMCPY(t, i->inp_ppcb, sizeof(*t)) == -1)
367 fprintf(stderr, "read(%#lx,%#lx,%lu) - inp_ppcb - failed\n",
368 (u_long)i->inp_ppcb, (u_long)t, (u_long)sizeof(*t));
371 return (struct tcpcb *)i->inp_ppcb;
386 #endif /* BSD < 199301 */
388 int do_socket(dev, mtu, ti, gwip)
394 struct sockaddr_in rsin, lsin;
395 struct tcpcb *t, tcb;
399 printf("Dest. Port: %d\n", ti->ti_dport);
401 fd = socket(AF_INET, SOCK_STREAM, 0);
408 if (fcntl(fd, F_SETFL, FNDELAY) == -1)
414 bzero((char *)&lsin, sizeof(lsin));
415 lsin.sin_family = AF_INET;
416 bcopy((char *)&ti->ti_src, (char *)&lsin.sin_addr,
417 sizeof(struct in_addr));
418 if (bind(fd, (struct sockaddr *)&lsin, sizeof(lsin)) == -1)
424 (void) getsockname(fd, (struct sockaddr *)&lsin, &len);
425 ti->ti_sport = lsin.sin_port;
426 printf("sport %d\n", ntohs(lsin.sin_port));
428 nfd = initdevice(dev, 1);
432 if (!(t = find_tcp(fd, ti)))
435 bzero((char *)&rsin, sizeof(rsin));
436 rsin.sin_family = AF_INET;
437 bcopy((char *)&ti->ti_dst, (char *)&rsin.sin_addr,
438 sizeof(struct in_addr));
439 rsin.sin_port = ti->ti_dport;
440 if (connect(fd, (struct sockaddr *)&rsin, sizeof(rsin)) == -1 &&
441 errno != EINPROGRESS)
446 KMCPY(&tcb, t, sizeof(tcb));
447 ti->ti_win = tcb.rcv_adv;
448 ti->ti_seq = tcb.snd_nxt - 1;
449 ti->ti_ack = tcb.rcv_nxt;
451 if (send_tcp(nfd, mtu, (ip_t *)ti, gwip) == -1)
453 (void)write(fd, "Hello World\n", 12);