1 /* $FreeBSD: src/contrib/ipfilter/ipsend/sock.c,v 1.3.2.4 2003/03/01 03:55:53 darrenr Exp $ */
2 /* $DragonFly: src/contrib/ipfilter/ipsend/sock.c,v 1.2 2003/06/17 04:24:02 dillon Exp $ */
4 * sock.c (C) 1995-1998 Darren Reed
6 * See the IPFILTER.LICENCE file for details on licencing.
8 #if defined(__sgi) && (IRIX > 602)
9 # include <sys/ptimers.h>
17 #include <sys/types.h>
19 #include <sys/param.h>
24 #if (__FreeBSD_version >= 300000)
25 # include <sys/dirent.h>
33 # include <sys/smp_lock.h>
40 #include <sys/socket.h>
41 #include <sys/socketvar.h>
43 #if !defined(ultrix) && !defined(hpux)
47 #include <sys/systm.h>
48 #include <sys/session.h>
51 #include <sys/sysctl.h>
52 #include <sys/filedesc.h>
56 #include <netinet/in.h>
57 #include <netinet/in_systm.h>
58 #include <netinet/ip.h>
59 #include <netinet/tcp.h>
61 #include <net/route.h>
62 #include <netinet/ip_var.h>
63 #include <netinet/in_pcb.h>
64 #include <netinet/tcp_timer.h>
65 #include <netinet/tcp_var.h>
69 static const char sccsid[] = "@(#)sock.c 1.2 1/11/96 (C)1995 Darren Reed";
70 static const char rcsid[] = "@(#)$Id: sock.c,v 2.1.4.6 2002/12/06 11:40:36 darrenr Exp $";
79 # define KMEM _PATH_KMEM
84 # define KERNEL _PATH_UNIX
88 # define KMEM "/dev/kmem"
91 # define KERNEL "/vmunix"
96 static struct proc *getproc __P((void));
98 static struct kinfo_proc *getproc __P((void));
102 int kmemcpy(buf, pos, n)
108 off_t offset = (u_long)pos;
111 kfd = open(KMEM, O_RDONLY);
113 if (lseek(kfd, offset, SEEK_SET) == -1)
118 if (read(kfd, buf, n) == -1)
126 struct nlist names[4] = {
138 static struct proc *getproc()
141 pid_t pid = getpid();
144 n = nlist(KERNEL, names);
147 fprintf(stderr, "nlist(%#x) == %d\n", names, n);
150 if (KMCPY(&nproc, names[1].n_value, sizeof(nproc)) == -1)
152 fprintf(stderr, "read nproc (%#x)\n", names[1].n_value);
155 siz = nproc * sizeof(struct proc);
156 if (KMCPY(&p, names[0].n_value, sizeof(p)) == -1)
158 fprintf(stderr, "read(%#x,%#x,%d) proc\n",
159 names[0].n_value, &p, sizeof(p));
162 proc = (struct proc *)malloc(siz);
163 if (KMCPY(proc, p, siz) == -1)
165 fprintf(stderr, "read(%#x,%#x,%d) proc\n",
172 for (n = nproc; n; n--, p++)
182 struct tcpcb *find_tcp(fd, ti)
193 if (!(p = getproc()))
195 up = (struct user *)malloc(sizeof(*up));
197 if (KMCPY(up, p->p_uarea, sizeof(*up)) == -1)
199 fprintf(stderr, "read(%#x,%#x) failed\n", p, p->p_uarea);
203 if (KMCPY(up, names[2].n_value, sizeof(*up)) == -1)
205 fprintf(stderr, "read(%#x,%#x) failed\n", p, names[2].n_value);
210 o = (struct file **)calloc(1, sizeof(*o) * (up->u_lastfile + 1));
211 if (KMCPY(o, up->u_ofile, (up->u_lastfile + 1) * sizeof(*o)) == -1)
213 fprintf(stderr, "read(%#x,%#x,%d) - u_ofile - failed\n",
214 up->u_ofile, o, sizeof(*o));
217 f = (struct file *)calloc(1, sizeof(*f));
218 if (KMCPY(f, o[fd], sizeof(*f)) == -1)
220 fprintf(stderr, "read(%#x,%#x,%d) - o[fd] - failed\n",
221 up->u_ofile[fd], f, sizeof(*f));
225 s = (struct socket *)calloc(1, sizeof(*s));
226 if (KMCPY(s, f->f_data, sizeof(*s)) == -1)
228 fprintf(stderr, "read(%#x,%#x,%d) - f_data - failed\n",
229 o[fd], s, sizeof(*s));
233 i = (struct inpcb *)calloc(1, sizeof(*i));
234 if (KMCPY(i, s->so_pcb, sizeof(*i)) == -1)
236 fprintf(stderr, "kvm_read(%#x,%#x,%d) - so_pcb - failed\n",
237 s->so_pcb, i, sizeof(*i));
241 t = (struct tcpcb *)calloc(1, sizeof(*t));
242 if (KMCPY(t, i->inp_ppcb, sizeof(*t)) == -1)
244 fprintf(stderr, "read(%#x,%#x,%d) - inp_ppcb - failed\n",
245 i->inp_ppcb, t, sizeof(*t));
248 return (struct tcpcb *)i->inp_ppcb;
251 static struct kinfo_proc *getproc()
253 static struct kinfo_proc kp;
254 pid_t pid = getpid();
260 mib[2] = KERN_PROC_PID;
264 if (sysctl(mib, 4, &kp, &n, NULL, 0) == -1)
273 struct tcpcb *find_tcp(tfd, ti)
281 struct kinfo_proc *p;
284 if (!(p = getproc()))
287 fd = (struct filedesc *)malloc(sizeof(*fd));
288 #if defined( __FreeBSD_version) && __FreeBSD_version >= 500013
289 if (KMCPY(fd, p->ki_fd, sizeof(*fd)) == -1)
291 fprintf(stderr, "read(%#lx,%#lx) failed\n",
292 (u_long)p, (u_long)p->ki_fd);
296 if (KMCPY(fd, p->kp_proc.p_fd, sizeof(*fd)) == -1)
298 fprintf(stderr, "read(%#lx,%#lx) failed\n",
299 (u_long)p, (u_long)p->kp_proc.p_fd);
304 o = (struct file **)calloc(1, sizeof(*o) * (fd->fd_lastfile + 1));
305 if (KMCPY(o, fd->fd_ofiles, (fd->fd_lastfile + 1) * sizeof(*o)) == -1)
307 fprintf(stderr, "read(%#lx,%#lx,%lu) - u_ofile - failed\n",
308 (u_long)fd->fd_ofiles, (u_long)o, (u_long)sizeof(*o));
311 f = (struct file *)calloc(1, sizeof(*f));
312 if (KMCPY(f, o[tfd], sizeof(*f)) == -1)
314 fprintf(stderr, "read(%#lx,%#lx,%lu) - o[tfd] - failed\n",
315 (u_long)o[tfd], (u_long)f, (u_long)sizeof(*f));
319 s = (struct socket *)calloc(1, sizeof(*s));
320 if (KMCPY(s, f->f_data, sizeof(*s)) == -1)
322 fprintf(stderr, "read(%#lx,%#lx,%lu) - f_data - failed\n",
323 (u_long)f->f_data, (u_long)s, (u_long)sizeof(*s));
327 i = (struct inpcb *)calloc(1, sizeof(*i));
328 if (KMCPY(i, s->so_pcb, sizeof(*i)) == -1)
330 fprintf(stderr, "kvm_read(%#lx,%#lx,%lu) - so_pcb - failed\n",
331 (u_long)s->so_pcb, (u_long)i, (u_long)sizeof(*i));
335 t = (struct tcpcb *)calloc(1, sizeof(*t));
336 if (KMCPY(t, i->inp_ppcb, sizeof(*t)) == -1)
338 fprintf(stderr, "read(%#lx,%#lx,%lu) - inp_ppcb - failed\n",
339 (u_long)i->inp_ppcb, (u_long)t, (u_long)sizeof(*t));
342 return (struct tcpcb *)i->inp_ppcb;
344 #endif /* BSD < 199301 */
346 int do_socket(dev, mtu, ti, gwip)
352 struct sockaddr_in rsin, lsin;
353 struct tcpcb *t, tcb;
356 printf("Dest. Port: %d\n", ti->ti_dport);
358 fd = socket(AF_INET, SOCK_STREAM, 0);
365 if (fcntl(fd, F_SETFL, FNDELAY) == -1)
371 bzero((char *)&lsin, sizeof(lsin));
372 lsin.sin_family = AF_INET;
373 bcopy((char *)&ti->ti_src, (char *)&lsin.sin_addr,
374 sizeof(struct in_addr));
375 if (bind(fd, (struct sockaddr *)&lsin, sizeof(lsin)) == -1)
381 (void) getsockname(fd, (struct sockaddr *)&lsin, &len);
382 ti->ti_sport = lsin.sin_port;
383 printf("sport %d\n", ntohs(lsin.sin_port));
384 nfd = initdevice(dev, ntohs(lsin.sin_port), 1);
386 if (!(t = find_tcp(fd, ti)))
389 bzero((char *)&rsin, sizeof(rsin));
390 rsin.sin_family = AF_INET;
391 bcopy((char *)&ti->ti_dst, (char *)&rsin.sin_addr,
392 sizeof(struct in_addr));
393 rsin.sin_port = ti->ti_dport;
394 if (connect(fd, (struct sockaddr *)&rsin, sizeof(rsin)) == -1 &&
395 errno != EINPROGRESS)
400 KMCPY(&tcb, t, sizeof(tcb));
401 ti->ti_win = tcb.rcv_adv;
402 ti->ti_seq = tcb.snd_nxt - 1;
403 ti->ti_ack = tcb.rcv_nxt;
405 if (send_tcp(nfd, mtu, (ip_t *)ti, gwip) == -1)
407 (void)write(fd, "Hello World\n", 12);