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 1.4 2007/02/01 10:33:25 corecode Exp $ */
4 * sock.c (C) 1995-1998 Darren Reed
6 * See the IPFILTER.LICENCE file for details on licencing.
10 #if defined(__sgi) && (IRIX > 602)
11 # include <sys/ptimers.h>
19 #include <sys/types.h>
21 #include <sys/param.h>
26 #if (__FreeBSD_version >= 300000)
27 # include <sys/dirent.h>
29 # include <sys/dirent.h>
35 # include <sys/smp_lock.h>
41 #include <sys/socket.h>
42 #include <sys/socketvar.h>
44 #if !defined(ultrix) && !defined(hpux)
48 #include <sys/systm.h>
49 #include <sys/session.h>
52 #include <sys/sysctl.h>
53 #include <sys/filedesc.h>
57 #include <netinet/in.h>
58 #include <netinet/in_systm.h>
59 #include <netinet/ip.h>
60 #include <netinet/tcp.h>
62 #include <net/route.h>
63 #include <netinet/ip_var.h>
64 #include <netinet/in_pcb.h>
65 #include <netinet/tcp_timer.h>
66 #include <netinet/tcp_var.h>
70 static const char sccsid[] = "@(#)sock.c 1.2 1/11/96 (C)1995 Darren Reed";
71 static const char rcsid[] = "@(#)$Id: sock.c,v 2.1.4.6 2002/12/06 11:40:36 darrenr Exp $";
80 # define KMEM _PATH_KMEM
85 # define KERNEL _PATH_UNIX
89 # define KMEM "/dev/kmem"
92 # define KERNEL "/vmunix"
97 static struct proc *getproc __P((void));
99 static struct kinfo_proc *getproc __P((void));
103 int kmemcpy(buf, pos, n)
109 off_t offset = (u_long)pos;
112 kfd = open(KMEM, O_RDONLY);
114 if (lseek(kfd, offset, SEEK_SET) == -1)
119 if (read(kfd, buf, n) == -1)
127 struct nlist names[4] = {
139 static struct proc *getproc()
142 pid_t pid = getpid();
145 n = nlist(KERNEL, names);
148 fprintf(stderr, "nlist(%#x) == %d\n", names, n);
151 if (KMCPY(&nproc, names[1].n_value, sizeof(nproc)) == -1)
153 fprintf(stderr, "read nproc (%#x)\n", names[1].n_value);
156 siz = nproc * sizeof(struct proc);
157 if (KMCPY(&p, names[0].n_value, sizeof(p)) == -1)
159 fprintf(stderr, "read(%#x,%#x,%d) proc\n",
160 names[0].n_value, &p, sizeof(p));
163 proc = (struct proc *)malloc(siz);
164 if (KMCPY(proc, p, siz) == -1)
166 fprintf(stderr, "read(%#x,%#x,%d) proc\n",
173 for (n = nproc; n; n--, p++)
183 struct tcpcb *find_tcp(fd, ti)
195 if (!(p = getproc()))
197 up = (struct user *)malloc(sizeof(*up));
199 if (KMCPY(up, p->p_uarea, sizeof(*up)) == -1)
201 fprintf(stderr, "read(%#x,%#x) failed\n", p, p->p_uarea);
205 if (KMCPY(up, names[2].n_value, sizeof(*up)) == -1)
207 fprintf(stderr, "read(%#x,%#x) failed\n", p, names[2].n_value);
212 o = (struct fdnode *)calloc(1, sizeof(*o) * (up->u_lastfile + 1));
213 if (KMCPY(o, up->u_ofile, (up->u_lastfile + 1) * sizeof(*o)) == -1)
215 fprintf(stderr, "read(%#x,%#x,%d) - u_ofile - failed\n",
216 up->u_ofile, o, sizeof(*o));
219 f = (struct file *)calloc(1, sizeof(*f));
220 if (KMCPY(f, o[fd].fp, sizeof(*f)) == -1)
222 fprintf(stderr, "read(%#x,%#x,%d) - o[fd].fp - failed\n",
223 up->u_ofile[fd], f, sizeof(*f));
227 s = (struct socket *)calloc(1, sizeof(*s));
228 if (KMCPY(s, f->f_data, sizeof(*s)) == -1)
230 fprintf(stderr, "read(%#x,%#x,%d) - f_data - failed\n",
231 o[fd], s, sizeof(*s));
235 i = (struct inpcb *)calloc(1, sizeof(*i));
236 if (KMCPY(i, s->so_pcb, sizeof(*i)) == -1)
238 fprintf(stderr, "kvm_read(%#x,%#x,%d) - so_pcb - failed\n",
239 s->so_pcb, i, sizeof(*i));
243 t = (struct tcpcb *)calloc(1, sizeof(*t));
244 if (KMCPY(t, i->inp_ppcb, sizeof(*t)) == -1)
246 fprintf(stderr, "read(%#x,%#x,%d) - inp_ppcb - failed\n",
247 i->inp_ppcb, t, sizeof(*t));
250 return (struct tcpcb *)i->inp_ppcb;
253 static struct kinfo_proc *getproc()
255 static struct kinfo_proc kp;
256 pid_t pid = getpid();
262 mib[2] = KERN_PROC_PID;
266 if (sysctl(mib, 4, &kp, &n, NULL, 0) == -1)
274 struct tcpcb *find_tcp(tfd, ti)
282 struct kinfo_proc *p;
286 if (!(p = getproc()))
289 fd = (struct filedesc *)malloc(sizeof(*fd));
290 if (KMCPY(fd, p->kp_fd, sizeof(*fd)) == -1)
292 fprintf(stderr, "read(%#lx,%#lx) failed\n",
293 (u_long)p, (u_long)p->kp_fd);
297 o = (struct fdnode *)calloc(1, sizeof(*o) * (fd->fd_lastfile + 1));
298 if (KMCPY(o, fd->fd_files, (fd->fd_lastfile + 1) * sizeof(*o)) == -1)
300 fprintf(stderr, "read(%#lx,%#lx,%lu) - u_ofile - failed\n",
301 (u_long)fd->fd_files, (u_long)o, (u_long)sizeof(*o));
304 f = (struct file *)calloc(1, sizeof(*f));
305 if (KMCPY(f, o[tfd].fp, sizeof(*f)) == -1)
307 fprintf(stderr, "read(%#lx,%#lx,%lu) - o[tfd].fp - failed\n",
308 (u_long)o[tfd].fp, (u_long)f, (u_long)sizeof(*f));
312 s = (struct socket *)calloc(1, sizeof(*s));
313 if (KMCPY(s, f->f_data, sizeof(*s)) == -1)
315 fprintf(stderr, "read(%#lx,%#lx,%lu) - f_data - failed\n",
316 (u_long)f->f_data, (u_long)s, (u_long)sizeof(*s));
320 i = (struct inpcb *)calloc(1, sizeof(*i));
321 if (KMCPY(i, s->so_pcb, sizeof(*i)) == -1)
323 fprintf(stderr, "kvm_read(%#lx,%#lx,%lu) - so_pcb - failed\n",
324 (u_long)s->so_pcb, (u_long)i, (u_long)sizeof(*i));
328 t = (struct tcpcb *)calloc(1, sizeof(*t));
329 if (KMCPY(t, i->inp_ppcb, sizeof(*t)) == -1)
331 fprintf(stderr, "read(%#lx,%#lx,%lu) - inp_ppcb - failed\n",
332 (u_long)i->inp_ppcb, (u_long)t, (u_long)sizeof(*t));
335 return (struct tcpcb *)i->inp_ppcb;
337 #endif /* BSD < 199301 */
339 int do_socket(dev, mtu, ti, gwip)
345 struct sockaddr_in rsin, lsin;
346 struct tcpcb *t, tcb;
349 printf("Dest. Port: %d\n", ti->ti_dport);
351 fd = socket(AF_INET, SOCK_STREAM, 0);
358 if (fcntl(fd, F_SETFL, FNDELAY) == -1)
364 bzero((char *)&lsin, sizeof(lsin));
365 lsin.sin_family = AF_INET;
366 bcopy((char *)&ti->ti_src, (char *)&lsin.sin_addr,
367 sizeof(struct in_addr));
368 if (bind(fd, (struct sockaddr *)&lsin, sizeof(lsin)) == -1)
374 (void) getsockname(fd, (struct sockaddr *)&lsin, &len);
375 ti->ti_sport = lsin.sin_port;
376 printf("sport %d\n", ntohs(lsin.sin_port));
377 nfd = initdevice(dev, ntohs(lsin.sin_port), 1);
379 if (!(t = find_tcp(fd, ti)))
382 bzero((char *)&rsin, sizeof(rsin));
383 rsin.sin_family = AF_INET;
384 bcopy((char *)&ti->ti_dst, (char *)&rsin.sin_addr,
385 sizeof(struct in_addr));
386 rsin.sin_port = ti->ti_dport;
387 if (connect(fd, (struct sockaddr *)&rsin, sizeof(rsin)) == -1 &&
388 errno != EINPROGRESS)
393 KMCPY(&tcb, t, sizeof(tcb));
394 ti->ti_win = tcb.rcv_adv;
395 ti->ti_seq = tcb.snd_nxt - 1;
396 ti->ti_ack = tcb.rcv_nxt;
398 if (send_tcp(nfd, mtu, (ip_t *)ti, gwip) == -1)
400 (void)write(fd, "Hello World\n", 12);