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-rw-r--r--contrib/ipfilter/ipsend/sock.c370
1 files changed, 370 insertions, 0 deletions
diff --git a/contrib/ipfilter/ipsend/sock.c b/contrib/ipfilter/ipsend/sock.c
new file mode 100644
index 000000000000..58949c50d608
--- /dev/null
+++ b/contrib/ipfilter/ipsend/sock.c
@@ -0,0 +1,370 @@
+/*
+ * 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.
+ */
+#if !defined(lint) && defined(LIBC_SCCS)
+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;
+
+extern int initdevice(), send_tcp();
+
+#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;
+off_t pos;
+int n;
+{
+ static int kfd = -1;
+
+ if (kfd == -1)
+ kfd = open(KMEM, O_RDONLY);
+
+ if (lseek(kfd, 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, (off_t)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, (off_t)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, (off_t)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, (off_t)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, (off_t)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, (off_t)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, (off_t)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, (off_t)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, (off_t)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 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(%#lx,%#lx) failed\n",
+ (u_long)p, (u_long)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(%#lx,%#lx,%d) - u_ofile - failed\n",
+ (u_long)fd->fd_ofiles, (u_long)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(%#lx,%#lx,%d) - o[tfd] - failed\n",
+ (u_long)o[tfd], (u_long)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(%#lx,%#lx,%d) - f_data - failed\n",
+ (u_long)f->f_data, (u_long)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(%#lx,%#lx,%d) - so_pcb - failed\n",
+ (u_long)s->so_pcb, (u_long)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(%#lx,%#lx,%d) - inp_ppcb - failed\n",
+ (u_long)i->inp_ppcb, (u_long)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;
+}
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