ipfilter 3.0.4

1 files changed, 367 insertions, 0 deletions

diff --git a/usr.sbin/ipsend/common/sock.c b/usr.sbin/ipsend/common/sock.c
new file mode 100644
index 00000000000..70c2e390cfc
--- /dev/null
+++ b/usr.sbin/ipsend/common/sock.c
@@ -0,0 +1,367 @@
+/*
+ * sock.c (C) 1995 Darren Reed
+ *
+ * The author provides this program as-is, with no gaurantee for its
+ * suitability for any specific purpose.  The author takes no responsibility
+ * for the misuse/abuse of this program and provides it for the sole purpose
+ * of testing packet filter policies.  This file maybe distributed freely
+ * providing it is not modified and that this notice remains in tact.
+ */
+#ifndef	lint
+static	char	sccsid[] = "@(#)sock.c	1.2 1/11/96 (C)1995 Darren Reed";
+#endif
+#include <stdio.h>
+#include <unistd.h>
+#include <string.h>
+#include <stdlib.h>
+#include <stddef.h>
+#include <pwd.h>
+#include <sys/types.h>
+#include <sys/time.h>
+#include <sys/param.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <sys/dir.h>
+#define _KERNEL
+#define	KERNEL
+#include <sys/file.h>
+#undef  _KERNEL
+#undef  KERNEL
+#include <nlist.h>
+#include <sys/user.h>
+#include <sys/socket.h>
+#include <sys/socketvar.h>
+#include <sys/proc.h>
+#include <kvm.h>
+#ifdef sun
+#include <sys/systm.h>
+#include <sys/session.h>
+#endif
+#if BSD >= 199103
+#include <sys/sysctl.h>
+#include <sys/filedesc.h>
+#include <paths.h>
+#endif
+#include <math.h>
+#include <netinet/in.h>
+#include <netinet/in_systm.h>
+#include <netinet/ip.h>
+#include <netinet/tcp.h>
+#include <net/if.h>
+#include <net/route.h>
+#include <netinet/ip_var.h>
+#include <netinet/in_pcb.h>
+#include <netinet/tcp_timer.h>
+#include <netinet/tcp_var.h>
+#include <netinet/tcpip.h>
+
+int	nproc;
+struct	proc	*proc;
+
+#ifndef	KMEM
+# ifdef	_PATH_KMEM
+#  define	KMEM	_PATH_KMEM
+# endif
+#endif
+#ifndef	KERNEL
+# ifdef	_PATH_UNIX
+#  define	KERNEL	_PATH_UNIX
+# endif
+#endif
+#ifndef	KMEM
+# define	KMEM	"/dev/kmem"
+#endif
+#ifndef	KERNEL
+# define	KERNEL	"/vmunix"
+#endif
+
+int	kmemcpy(buf, pos, n)
+char	*buf;
+void	*pos;
+int	n;
+{
+	static	int	kfd = -1;
+
+	if (kfd == -1)
+		kfd = open(KMEM, O_RDONLY);
+
+	if (lseek(kfd, (off_t)(u_long)pos, SEEK_SET) == -1)
+	    {
+		perror("lseek");
+		return -1;
+	    }
+	if (read(kfd, buf, n) == -1)
+	    {
+		perror("read");
+		return -1;
+	    }
+	return n;
+}
+
+struct	nlist	names[3] = {
+	{ "_proc" },
+	{ "_nproc" },
+	{ NULL }
+	};
+
+#if BSD < 199103
+struct	proc	*getproc()
+{
+	struct	proc	*p;
+	pid_t	pid = getpid();
+	int	siz, n;
+
+	n = nlist(KERNEL, names);
+	if (n != 0)
+	    {
+		fprintf(stderr, "nlist(%#x) == %d\n", names, n);
+		return NULL;
+	    }
+	if (kmemcpy((char *)&nproc, (void *)names[1].n_value,
+		    sizeof(nproc)) == -1)
+	    {
+		fprintf(stderr, "read nproc (%#x)\n", names[1].n_value);
+		return NULL;
+	    }
+	siz = nproc * sizeof(struct proc);
+	if (kmemcpy((char *)&p, (void *)names[0].n_value, sizeof(p)) == -1)
+	    {
+		fprintf(stderr, "read(%#x,%#x,%d) proc\n",
+			names[0].n_value, &p, sizeof(p));
+		return NULL;
+	    }
+	proc = (struct proc *)malloc(siz);
+	if (kmemcpy((char *)proc, (void *)p, siz) == -1)
+	    {
+		fprintf(stderr, "read(%#x,%#x,%d) proc\n",
+			p, proc, siz);
+		return NULL;
+	    }
+
+	p = proc;
+
+	for (n = nproc; n; n--, p++)
+		if (p->p_pid == pid)
+			break;
+	if (!n)
+		return NULL;
+
+	return p;
+}
+
+
+struct	tcpcb	*find_tcp(fd, ti)
+int	fd;
+struct	tcpiphdr *ti;
+{
+	struct	tcpcb	*t;
+	struct	inpcb	*i;
+	struct	socket	*s;
+	struct	user	*up;
+	struct	proc	*p;
+	struct	file	*f, **o;
+
+	if (!(p = getproc()))
+		return NULL;
+
+	up = (struct user *)malloc(sizeof(*up));
+	if (kmemcpy((char *)up, (void *)p->p_uarea, sizeof(*up)) == -1)
+	    {
+		fprintf(stderr, "read(%#x,%#x) failed\n", p, p->p_uarea);
+		return NULL;
+	    }
+
+	o = (struct file **)calloc(1, sizeof(*o) * (up->u_lastfile + 1));
+	if (kmemcpy((char *)o, (void *)up->u_ofile,
+		    (up->u_lastfile + 1) * sizeof(*o)) == -1)
+	    {
+		fprintf(stderr, "read(%#x,%#x,%d) - u_ofile - failed\n",
+			up->u_ofile_arr, o, sizeof(*o));
+		return NULL;
+	    }
+	f = (struct file *)calloc(1, sizeof(*f));
+	if (kmemcpy((char *)f, (void *)o[fd], sizeof(*f)) == -1)
+	    {
+		fprintf(stderr, "read(%#x,%#x,%d) - o[fd] - failed\n",
+			up->u_ofile_arr[fd], f, sizeof(*f));
+		return NULL;
+	    }
+
+	s = (struct socket *)calloc(1, sizeof(*s));
+	if (kmemcpy((char *)s, (void *)f->f_data, sizeof(*s)) == -1)
+	    {
+		fprintf(stderr, "read(%#x,%#x,%d) - f_data - failed\n",
+			o[fd], s, sizeof(*s));
+		return NULL;
+	    }
+
+	i = (struct inpcb *)calloc(1, sizeof(*i));
+	if (kmemcpy((char *)i, (void *)s->so_pcb, sizeof(*i)) == -1)
+	    {
+		fprintf(stderr, "kvm_read(%#x,%#x,%d) - so_pcb - failed\n",
+			s->so_pcb, i, sizeof(*i));
+		return NULL;
+	    }
+
+	t = (struct tcpcb *)calloc(1, sizeof(*t));
+	if (kmemcpy((char *)t, (void *)i->inp_ppcb, sizeof(*t)) == -1)
+	    {
+		fprintf(stderr, "read(%#x,%#x,%d) - inp_ppcb - failed\n",
+			i->inp_ppcb, t, sizeof(*t));
+		return NULL;
+	    }
+	return (struct tcpcb *)i->inp_ppcb;
+}
+#else
+struct	kinfo_proc	*getproc()
+{
+	static	struct	kinfo_proc kp;
+	pid_t	pid = getpid();
+	int	siz, n, mib[4];
+
+	mib[0] = CTL_KERN;
+	mib[1] = KERN_PROC;
+	mib[2] = KERN_PROC_PID;
+	mib[3] = pid;
+
+	n = 1;
+	if (sysctl(mib, 4, &kp, &n, NULL, 0) == -1)
+	    {
+		perror("sysctl");
+		return NULL;
+	    }
+	return &kp;
+}
+
+
+struct	tcpcb	*find_tcp(tfd, ti)
+int	tfd;
+struct	tcpiphdr *ti;
+{
+	struct	tcpcb	*t;
+	struct	inpcb	*i;
+	struct	socket	*s;
+	struct	filedesc	*fd;
+	struct	kinfo_proc	*p;
+	struct	file	*f, **o;
+
+	if (!(p = getproc()))
+		return NULL;
+
+	fd = (struct filedesc *)malloc(sizeof(*fd));
+	if (kmemcpy((char *)fd, (void *)p->kp_proc.p_fd, sizeof(*fd)) == -1)
+	    {
+		fprintf(stderr, "read(%#x,%#x) failed\n", p, p->kp_proc.p_fd);
+		return NULL;
+	    }
+
+	o = (struct file **)calloc(1, sizeof(*o) * (fd->fd_lastfile + 1));
+	if (kmemcpy((char *)o, (void *)fd->fd_ofiles,
+		    (fd->fd_lastfile + 1) * sizeof(*o)) == -1)
+	    {
+		fprintf(stderr, "read(%#x,%#x,%d) - u_ofile - failed\n",
+			fd->fd_ofiles, o, sizeof(*o));
+		return NULL;
+	    }
+	f = (struct file *)calloc(1, sizeof(*f));
+	if (kmemcpy((char *)f, (void *)o[tfd], sizeof(*f)) == -1)
+	    {
+		fprintf(stderr, "read(%#x,%#x,%d) - o[tfd] - failed\n",
+			o[tfd], f, sizeof(*f));
+		return NULL;
+	    }
+
+	s = (struct socket *)calloc(1, sizeof(*s));
+	if (kmemcpy((char *)s, (void *)f->f_data, sizeof(*s)) == -1)
+	    {
+		fprintf(stderr, "read(%#x,%#x,%d) - f_data - failed\n",
+			f->f_data, s, sizeof(*s));
+		return NULL;
+	    }
+
+	i = (struct inpcb *)calloc(1, sizeof(*i));
+	if (kmemcpy((char *)i, (void *)s->so_pcb, sizeof(*i)) == -1)
+	    {
+		fprintf(stderr, "kvm_read(%#x,%#x,%d) - so_pcb - failed\n",
+			s->so_pcb, i, sizeof(*i));
+		return NULL;
+	    }
+
+	t = (struct tcpcb *)calloc(1, sizeof(*t));
+	if (kmemcpy((char *)t, (void *)i->inp_ppcb, sizeof(*t)) == -1)
+	    {
+		fprintf(stderr, "read(%#x,%#x,%d) - inp_ppcb - failed\n",
+			i->inp_ppcb, t, sizeof(*t));
+		return NULL;
+	    }
+	return (struct tcpcb *)i->inp_ppcb;
+}
+#endif /* BSD < 199301 */
+
+int	do_socket(dev, mtu, ti, gwip, flags)
+char	*dev;
+int	mtu;
+struct	tcpiphdr *ti;
+struct	in_addr	gwip;
+int	flags;
+{
+	struct	sockaddr_in	rsin, lsin;
+	struct	tcpcb	*t, tcb;
+	int	fd, nfd, len;
+
+	printf("Dest. Port: %d\n", ti->ti_dport);
+
+	fd = socket(AF_INET, SOCK_STREAM, 0);
+	if (fd == -1)
+	    {
+		perror("socket");
+		return -1;
+	    }
+
+	if (fcntl(fd, F_SETFL, FNDELAY) == -1)
+	    {
+		perror("fcntl");
+		return -1;
+	    }
+
+	bzero((char *)&lsin, sizeof(lsin));
+	lsin.sin_family = AF_INET;
+	bcopy((char *)&ti->ti_src, (char *)&lsin.sin_addr,
+	      sizeof(struct in_addr));
+	if (bind(fd, (struct sockaddr *)&lsin, sizeof(lsin)) == -1)
+	    {
+		perror("bind");
+		return -1;
+	    }
+	len = sizeof(lsin);
+	(void) getsockname(fd, (struct sockaddr *)&lsin, &len);
+	ti->ti_sport = lsin.sin_port;
+	printf("sport %d\n", ntohs(lsin.sin_port));
+	nfd = initdevice(dev, ntohs(lsin.sin_port));
+
+	if (!(t = find_tcp(fd, ti)))
+		return -1;
+
+	bzero((char *)&rsin, sizeof(rsin));
+	rsin.sin_family = AF_INET;
+	bcopy((char *)&ti->ti_dst, (char *)&rsin.sin_addr,
+	      sizeof(struct in_addr));
+	rsin.sin_port = ti->ti_dport;
+	if (connect(fd, (struct sockaddr *)&rsin, sizeof(rsin)) == -1 &&
+	    errno != EINPROGRESS)
+	    {
+		perror("connect");
+		return -1;
+	    }
+	kmemcpy((char*)&tcb, (void *)t, sizeof(tcb));
+	ti->ti_win = tcb.rcv_adv;
+	ti->ti_seq = tcb.snd_nxt - 1;
+	ti->ti_ack = tcb.rcv_nxt;
+
+	if (send_tcp(nfd, mtu, ti, gwip, TH_SYN) == -1)
+		return -1;
+	(void)write(fd, "Hello World\n", 12);
+	sleep(2);
+	close(fd);
+	return 0;
+}