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: sock.c,v 2.8.4.4 2006/03/21 16:10:56 darrenr Exp $";
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>
37 # include <sys/smp_lock.h>
39 # include <sys/file.h>
45 #include <sys/socket.h>
46 #include <sys/socketvar.h>
48 #if !defined(ultrix) && !defined(hpux) && !defined(__osf__)
52 #include <sys/systm.h>
53 #include <sys/session.h>
56 #include <sys/sysctl.h>
57 #include <sys/filedesc.h>
61 #include <netinet/in.h>
62 #include <netinet/in_systm.h>
63 #include <netinet/ip.h>
64 #include <netinet/tcp.h>
66 #if defined(__FreeBSD__)
67 # include "radix_ipf.h"
69 #include <net/route.h>
70 #include <netinet/ip_var.h>
71 #include <netinet/in_pcb.h>
72 #include <netinet/tcp_timer.h>
73 #include <netinet/tcp_var.h>
88 # define KMEM _PATH_KMEM
93 # define KERNEL _PATH_UNIX
97 # define KMEM "/dev/kmem"
100 # define KERNEL "/vmunix"
105 static struct proc *getproc __P((void));
107 static struct kinfo_proc *getproc __P((void));
111 int kmemcpy(buf, pos, n)
117 off_t offset = (u_long)pos;
120 kfd = open(KMEM, O_RDONLY);
122 if (lseek(kfd, offset, SEEK_SET) == -1)
127 if (read(kfd, buf, n) == -1)
135 struct nlist names[4] = {
147 static struct proc *getproc()
150 pid_t pid = getpid();
153 n = nlist(KERNEL, names);
156 fprintf(stderr, "nlist(%#x) == %d\n", names, n);
159 if (KMCPY(&nproc, names[1].n_value, sizeof(nproc)) == -1)
161 fprintf(stderr, "read nproc (%#x)\n", names[1].n_value);
164 siz = nproc * sizeof(struct proc);
165 if (KMCPY(&p, names[0].n_value, sizeof(p)) == -1)
167 fprintf(stderr, "read(%#x,%#x,%d) proc\n",
168 names[0].n_value, &p, sizeof(p));
171 proc = (struct proc *)malloc(siz);
172 if (KMCPY(proc, p, siz) == -1)
174 fprintf(stderr, "read(%#x,%#x,%d) proc\n",
181 for (n = nproc; n; n--, p++)
191 struct tcpcb *find_tcp(fd, ti)
202 if (!(p = getproc()))
204 up = (struct user *)malloc(sizeof(*up));
206 if (KMCPY(up, p->p_uarea, sizeof(*up)) == -1)
208 fprintf(stderr, "read(%#x,%#x) failed\n", p, p->p_uarea);
212 if (KMCPY(up, names[2].n_value, sizeof(*up)) == -1)
214 fprintf(stderr, "read(%#x,%#x) failed\n", p, names[2].n_value);
219 o = (struct file **)calloc(1, sizeof(*o) * (up->u_lastfile + 1));
220 if (KMCPY(o, up->u_ofile, (up->u_lastfile + 1) * sizeof(*o)) == -1)
222 fprintf(stderr, "read(%#x,%#x,%d) - u_ofile - failed\n",
223 up->u_ofile, o, sizeof(*o));
226 f = (struct file *)calloc(1, sizeof(*f));
227 if (KMCPY(f, o[fd], sizeof(*f)) == -1)
229 fprintf(stderr, "read(%#x,%#x,%d) - o[fd] - failed\n",
230 up->u_ofile[fd], f, sizeof(*f));
234 s = (struct socket *)calloc(1, sizeof(*s));
235 if (KMCPY(s, f->f_data, sizeof(*s)) == -1)
237 fprintf(stderr, "read(%#x,%#x,%d) - f_data - failed\n",
238 o[fd], s, sizeof(*s));
242 i = (struct inpcb *)calloc(1, sizeof(*i));
243 if (KMCPY(i, s->so_pcb, sizeof(*i)) == -1)
245 fprintf(stderr, "kvm_read(%#x,%#x,%d) - so_pcb - failed\n",
246 s->so_pcb, i, sizeof(*i));
250 t = (struct tcpcb *)calloc(1, sizeof(*t));
251 if (KMCPY(t, i->inp_ppcb, sizeof(*t)) == -1)
253 fprintf(stderr, "read(%#x,%#x,%d) - inp_ppcb - failed\n",
254 i->inp_ppcb, t, sizeof(*t));
257 return (struct tcpcb *)i->inp_ppcb;
260 static struct kinfo_proc *getproc()
262 static struct kinfo_proc kp;
263 pid_t pid = getpid();
269 mib[2] = KERN_PROC_PID;
273 if (sysctl(mib, 4, &kp, &n, NULL, 0) == -1)
282 struct tcpcb *find_tcp(tfd, ti)
290 struct kinfo_proc *p;
293 if (!(p = getproc()))
296 fd = (struct filedesc *)malloc(sizeof(*fd));
297 #if defined( __FreeBSD_version) && __FreeBSD_version >= 500013
298 if (KMCPY(fd, p->ki_fd, sizeof(*fd)) == -1)
300 fprintf(stderr, "read(%#lx,%#lx) failed\n",
301 (u_long)p, (u_long)p->ki_fd);
305 if (KMCPY(fd, p->kp_proc.p_fd, sizeof(*fd)) == -1)
307 fprintf(stderr, "read(%#lx,%#lx) failed\n",
308 (u_long)p, (u_long)p->kp_proc.p_fd);
319 o = (struct file **)calloc(1, sizeof(*o) * (fd->fd_lastfile + 1));
320 if (KMCPY(o, fd->fd_ofiles, (fd->fd_lastfile + 1) * sizeof(*o)) == -1)
322 fprintf(stderr, "read(%#lx,%#lx,%lu) - u_ofile - failed\n",
323 (u_long)fd->fd_ofiles, (u_long)o, (u_long)sizeof(*o));
326 f = (struct file *)calloc(1, sizeof(*f));
327 if (KMCPY(f, o[tfd], sizeof(*f)) == -1)
329 fprintf(stderr, "read(%#lx,%#lx,%lu) - o[tfd] - failed\n",
330 (u_long)o[tfd], (u_long)f, (u_long)sizeof(*f));
334 s = (struct socket *)calloc(1, sizeof(*s));
335 if (KMCPY(s, f->f_data, sizeof(*s)) == -1)
337 fprintf(stderr, "read(%#lx,%#lx,%lu) - f_data - failed\n",
338 (u_long)f->f_data, (u_long)s, (u_long)sizeof(*s));
342 i = (struct inpcb *)calloc(1, sizeof(*i));
343 if (KMCPY(i, s->so_pcb, sizeof(*i)) == -1)
345 fprintf(stderr, "kvm_read(%#lx,%#lx,%lu) - so_pcb - failed\n",
346 (u_long)s->so_pcb, (u_long)i, (u_long)sizeof(*i));
350 t = (struct tcpcb *)calloc(1, sizeof(*t));
351 if (KMCPY(t, i->inp_ppcb, sizeof(*t)) == -1)
353 fprintf(stderr, "read(%#lx,%#lx,%lu) - inp_ppcb - failed\n",
354 (u_long)i->inp_ppcb, (u_long)t, (u_long)sizeof(*t));
357 return (struct tcpcb *)i->inp_ppcb;
372 #endif /* BSD < 199301 */
374 int do_socket(dev, mtu, ti, gwip)
380 struct sockaddr_in rsin, lsin;
381 struct tcpcb *t, tcb;
384 printf("Dest. Port: %d\n", ti->ti_dport);
386 fd = socket(AF_INET, SOCK_STREAM, 0);
393 if (fcntl(fd, F_SETFL, FNDELAY) == -1)
399 bzero((char *)&lsin, sizeof(lsin));
400 lsin.sin_family = AF_INET;
401 bcopy((char *)&ti->ti_src, (char *)&lsin.sin_addr,
402 sizeof(struct in_addr));
403 if (bind(fd, (struct sockaddr *)&lsin, sizeof(lsin)) == -1)
409 (void) getsockname(fd, (struct sockaddr *)&lsin, &len);
410 ti->ti_sport = lsin.sin_port;
411 printf("sport %d\n", ntohs(lsin.sin_port));
413 nfd = initdevice(dev, 1);
417 if (!(t = find_tcp(fd, ti)))
420 bzero((char *)&rsin, sizeof(rsin));
421 rsin.sin_family = AF_INET;
422 bcopy((char *)&ti->ti_dst, (char *)&rsin.sin_addr,
423 sizeof(struct in_addr));
424 rsin.sin_port = ti->ti_dport;
425 if (connect(fd, (struct sockaddr *)&rsin, sizeof(rsin)) == -1 &&
426 errno != EINPROGRESS)
431 KMCPY(&tcb, t, sizeof(tcb));
432 ti->ti_win = tcb.rcv_adv;
433 ti->ti_seq = tcb.snd_nxt - 1;
434 ti->ti_ack = tcb.rcv_nxt;
436 if (send_tcp(nfd, mtu, (ip_t *)ti, gwip) == -1)
438 (void)write(fd, "Hello World\n", 12);