2 * lsock.c (C) 1995-1998 Darren Reed
4 * See the IPFILTER.LICENCE file for details on licencing.
7 static const char sccsid[] = "@(#)lsock.c 1.2 1/11/96 (C)1995 Darren Reed";
8 static const char rcsid[] = "@(#)$Id: lsock.c,v 2.1.4.3 2002/12/06 11:40:36 darrenr Exp $";
10 #if defined(__sgi) && (IRIX > 602)
11 # include <sys/ptimers.h>
19 #include <sys/types.h>
21 #include <sys/param.h>
24 #include <sys/dirent.h>
31 # include <linux/notifier.h>
35 #include "linux/netdevice.h"
39 #include <linux/sched.h>
40 #include <linux/netdevice.h>
43 #include <sys/socket.h>
45 #include <netinet/in.h>
46 #include <netinet/in_systm.h>
49 #include <net/inet/sock.h>
54 struct task_struct *proc;
58 # define KMEM _PATH_KMEM
62 # define KMEM "/dev/kmem"
65 # define KERNEL "/System.map"
68 int kmemcpy(buf, pos, n)
76 kfd = open(KMEM, O_RDONLY);
78 if (lseek(kfd, (off_t)pos, SEEK_SET) == -1)
83 if (read(kfd, buf, n) == -1)
91 struct nlist names[3] = {
97 struct task_struct *getproc()
99 struct task_struct *p, **pp;
101 pid_t pid = getpid();
104 n = nlist(KERNEL, names);
107 fprintf(stderr, "nlist(%#x) == %d\n", names, n);
110 if (KMCPY(&nproc, names[1].n_value, sizeof(nproc)) == -1)
112 fprintf(stderr, "read nproc (%#x)\n", names[1].n_value);
115 siz = nproc * sizeof(struct task_struct *);
116 if (KMCPY(&v, names[0].n_value, sizeof(v)) == -1)
118 fprintf(stderr, "read(%#x,%#x,%d) proc\n",
119 names[0].n_value, &v, sizeof(v));
122 pp = (struct task_struct **)malloc(siz);
123 if (KMCPY(pp, v, siz) == -1)
125 fprintf(stderr, "read(%#x,%#x,%d) proc\n",
129 proc = (struct task_struct *)malloc(siz);
130 for (n = 0; n < NR_TASKS; n++)
132 if (KMCPY((proc + n), pp[n], sizeof(*proc)) == -1)
134 fprintf(stderr, "read(%#x,%#x,%d) proc\n",
135 pp[n], proc + n, sizeof(*proc));
142 for (n = NR_TASKS; n; n--, p++)
152 struct sock *find_tcp(fd, ti)
158 struct files_struct *fs;
159 struct task_struct *p;
162 if (!(p = getproc()))
166 o = (struct file **)calloc(1, sizeof(*o) * (fs->count + 1));
167 if (KMCPY(o, fs->fd, (fs->count + 1) * sizeof(*o)) == -1)
169 fprintf(stderr, "read(%#x,%#x,%d) - fd - failed\n",
170 fs->fd, o, sizeof(*o));
173 f = (struct file *)calloc(1, sizeof(*f));
174 if (KMCPY(f, o[fd], sizeof(*f)) == -1)
176 fprintf(stderr, "read(%#x,%#x,%d) - o[fd] - failed\n",
177 o[fd], f, sizeof(*f));
181 i = (struct inode *)calloc(1, sizeof(*i));
182 if (KMCPY(i, f->f_inode, sizeof(*i)) == -1)
184 fprintf(stderr, "read(%#x,%#x,%d) - f_inode - failed\n",
185 f->f_inode, i, sizeof(*i));
188 return i->u.socket_i.data;
191 int do_socket(dev, mtu, ti, gwip)
197 struct sockaddr_in rsin, lsin;
201 printf("Dest. Port: %d\n", ti->ti_dport);
203 fd = socket(AF_INET, SOCK_STREAM, 0);
210 if (fcntl(fd, F_SETFL, FNDELAY) == -1)
216 bzero((char *)&lsin, sizeof(lsin));
217 lsin.sin_family = AF_INET;
218 bcopy((char *)&ti->ti_src, (char *)&lsin.sin_addr,
219 sizeof(struct in_addr));
220 if (bind(fd, (struct sockaddr *)&lsin, sizeof(lsin)) == -1)
226 (void) getsockname(fd, (struct sockaddr *)&lsin, &len);
227 ti->ti_sport = lsin.sin_port;
228 printf("sport %d\n", ntohs(lsin.sin_port));
229 nfd = initdevice(dev, ntohs(lsin.sin_port), 0);
231 if (!(s = find_tcp(fd, ti)))
234 bzero((char *)&rsin, sizeof(rsin));
235 rsin.sin_family = AF_INET;
236 bcopy((char *)&ti->ti_dst, (char *)&rsin.sin_addr,
237 sizeof(struct in_addr));
238 rsin.sin_port = ti->ti_dport;
239 if (connect(fd, (struct sockaddr *)&rsin, sizeof(rsin)) == -1 &&
240 errno != EINPROGRESS)
245 KMCPY(&sk, s, sizeof(sk));
246 ti->ti_win = sk.window;
247 ti->ti_seq = sk.sent_seq - 1;
248 ti->ti_ack = sk.rcv_ack_seq;
249 ti->ti_flags = TH_SYN;
251 if (send_tcp(nfd, mtu, (ip_t *)ti, gwip) == -1)
253 (void)write(fd, "Hello World\n", 12);