diff options
| -rw-r--r-- | source3/smbd/reply.c | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/source3/smbd/reply.c b/source3/smbd/reply.c index 0f2d71eba5..e1364f2462 100644 --- a/source3/smbd/reply.c +++ b/source3/smbd/reply.c @@ -407,6 +407,95 @@ bool fsp_belongs_conn(connection_struct *conn, struct smb_request *req, return False; } +static bool netbios_session_retarget(const char *name, int name_type) +{ + char *trim_name; + char *trim_name_type; + const char *retarget_parm; + char *retarget; + char *p; + int retarget_type = 0x20; + int retarget_port = 139; + struct sockaddr_storage retarget_addr; + struct sockaddr_in *in_addr; + bool ret = false; + uint8_t outbuf[10]; + + if (get_socket_port(smbd_server_fd()) != 139) { + return false; + } + + trim_name = talloc_strdup(talloc_tos(), name); + if (trim_name == NULL) { + goto fail; + } + trim_char(trim_name, ' ', ' '); + + trim_name_type = talloc_asprintf(trim_name, "%s#%2.2x", trim_name, + name_type); + if (trim_name_type == NULL) { + goto fail; + } + + retarget_parm = lp_parm_const_string(-1, "netbios retarget", + trim_name_type, NULL); + if (retarget_parm == NULL) { + retarget_parm = lp_parm_const_string(-1, "netbios retarget", + trim_name, NULL); + } + if (retarget_parm == NULL) { + goto fail; + } + + retarget = talloc_strdup(trim_name, retarget_parm); + if (retarget == NULL) { + goto fail; + } + + DEBUG(10, ("retargeting %s to %s\n", trim_name_type, retarget)); + + p = strchr(retarget, ':'); + if (p != NULL) { + *p++ = '\0'; + retarget_port = atoi(p); + } + + p = strchr_m(retarget, '#'); + if (p != NULL) { + *p++ = '\0'; + sscanf(p, "%x", &retarget_type); + } + + ret = resolve_name(retarget, &retarget_addr, retarget_type); + if (!ret) { + DEBUG(10, ("could not resolve %s\n", retarget)); + goto fail; + } + + if (retarget_addr.ss_family != AF_INET) { + DEBUG(10, ("Retarget target not an IPv4 addr\n")); + goto fail; + } + + in_addr = (struct sockaddr_in *)&retarget_addr; + + _smb_setlen(outbuf, 6); + SCVAL(outbuf, 0, 0x84); + *(uint32_t *)(outbuf+4) = in_addr->sin_addr.s_addr; + *(uint16_t *)(outbuf+8) = htons(retarget_port); + + if (!srv_send_smb(smbd_server_fd(), (char *)outbuf, false, 0, false, + NULL)) { + exit_server_cleanly("netbios_session_regarget: srv_send_smb " + "failed."); + } + + ret = true; + fail: + TALLOC_FREE(trim_name); + return ret; +} + /**************************************************************************** Reply to a (netbios-level) special message. ****************************************************************************/ @@ -450,6 +539,10 @@ void reply_special(char *inbuf) DEBUG(2,("netbios connect: name1=%s0x%x name2=%s0x%x\n", name1, name_type1, name2, name_type2)); + if (netbios_session_retarget(name1, name_type1)) { + exit_server_cleanly("retargeted client"); + } + set_local_machine_name(name1, True); set_remote_machine_name(name2, True); |