*** ./openssh-3.4p1/session.c   Wed Jun 26 06:51:06 2002
--- ./openssh-3.4p1-chroot/session.c    Mon Jul  8 10:35:44 2002
***************
*** 64,69 ****
--- 64,71 ----
  #define is_winnt       (GetVersion() < 0x80000000)
  #endif

+ #define CHROOT
+
  /* func */

  Session *session_new(void);
***************
*** 1159,1164 ****
--- 1161,1171 ----
  void
  do_setusercontext(struct passwd *pw)
  {
+ #ifdef CHROOT
+       char *user_dir;
+       char *new_root;
+ #endif /* CHROOT */
+
        char tty='\0';

  #ifdef HAVE_CYGWIN
***************
*** 1187,1192 ****
--- 1194,1220 ----

                if (setlogin(pw->pw_name) < 0)
                        error("setlogin failed: %s", strerror(errno));
+
+               #ifdef CHROOT
+                       user_dir = xstrdup(pw->pw_dir);
+                       new_root = user_dir + 1;
+
+                       while((new_root = strchr(new_root, '.')) != NULL) {
+                               new_root--;
+                               if(strncmp(new_root, "/./", 3) == 0) {
+                                       *new_root = '\0';
+                                       new_root += 2;
+
+                                       if(chroot(user_dir) != 0)
+                                               fatal("Couldn't chroot to user directory %s", user_dir);
+
+                                       pw->pw_dir = new_root;
+                                       break;
+                               }
+                               new_root += 2;
+                       }
+               #endif /* CHROOT */
+
                if (setgid(pw->pw_gid) < 0) {
                        perror("setgid");
                        exit(1);