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[/] [openrisc/] [trunk/] [rtos/] [ecos-2.0/] [packages/] [net/] [snmp/] [agent/] [v2_0/] [src/] [mibgroup/] [mibII/] [udp.c] - Blame information for rev 174

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//==========================================================================
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//
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//      snmp/snmpagent/current/src/mibgroup/mibII/udp.c
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//
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//
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//==========================================================================
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//####ECOSGPLCOPYRIGHTBEGIN####
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// -------------------------------------------
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// This file is part of eCos, the Embedded Configurable Operating System.
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// Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
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//
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// eCos is free software; you can redistribute it and/or modify it under
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// the terms of the GNU General Public License as published by the Free
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// Software Foundation; either version 2 or (at your option) any later version.
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//
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// eCos is distributed in the hope that it will be useful, but WITHOUT ANY
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// WARRANTY; without even the implied warranty of MERCHANTABILITY or
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// FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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// for more details.
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//
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// You should have received a copy of the GNU General Public License along
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// with eCos; if not, write to the Free Software Foundation, Inc.,
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// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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//
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// As a special exception, if other files instantiate templates or use macros
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// or inline functions from this file, or you compile this file and link it
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// with other works to produce a work based on this file, this file does not
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// by itself cause the resulting work to be covered by the GNU General Public
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// License. However the source code for this file must still be made available
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// in accordance with section (3) of the GNU General Public License.
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//
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// This exception does not invalidate any other reasons why a work based on
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// this file might be covered by the GNU General Public License.
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//
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// Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
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// at http://sources.redhat.com/ecos/ecos-license/
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// -------------------------------------------
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//####ECOSGPLCOPYRIGHTEND####
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//####UCDSNMPCOPYRIGHTBEGIN####
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//
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// -------------------------------------------
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//
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// Portions of this software may have been derived from the UCD-SNMP
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// project,  <http://ucd-snmp.ucdavis.edu/>  from the University of
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// California at Davis, which was originally based on the Carnegie Mellon
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// University SNMP implementation.  Portions of this software are therefore
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// covered by the appropriate copyright disclaimers included herein.
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//
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// The release used was version 4.1.2 of May 2000.  "ucd-snmp-4.1.2"
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// -------------------------------------------
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//
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//####UCDSNMPCOPYRIGHTEND####
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//==========================================================================
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//#####DESCRIPTIONBEGIN####
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//
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// Author(s):    hmt
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// Contributors: hmt, Andrew Lunn
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// Date:         2000-05-30
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// Purpose:      Port of UCD-SNMP distribution to eCos.
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// Description:  
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//              
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//
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//####DESCRIPTIONEND####
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//
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//==========================================================================
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/********************************************************************
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       Copyright 1989, 1991, 1992 by Carnegie Mellon University
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                          Derivative Work -
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Copyright 1996, 1998, 1999, 2000 The Regents of the University of California
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                         All Rights Reserved
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Permission to use, copy, modify and distribute this software and its
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documentation for any purpose and without fee is hereby granted,
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provided that the above copyright notice appears in all copies and
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that both that copyright notice and this permission notice appear in
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supporting documentation, and that the name of CMU and The Regents of
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the University of California not be used in advertising or publicity
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pertaining to distribution of the software without specific written
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permission.
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CMU AND THE REGENTS OF THE UNIVERSITY OF CALIFORNIA DISCLAIM ALL
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WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS.  IN NO EVENT SHALL CMU OR
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THE REGENTS OF THE UNIVERSITY OF CALIFORNIA BE LIABLE FOR ANY SPECIAL,
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INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
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FROM THE LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
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CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
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CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*********************************************************************/
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/* This file was generated by mib2c and is intended for use as a mib module
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   for the ucd-snmp snmpd agent. */
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#include <pkgconf/system.h>
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/* This should always be included first before anything else */
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#include <config.h>
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/* minimal include directives */
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#include "mibincl.h"
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#include "mibgroup/util_funcs.h"
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#include "mibgroup/mibII/udp.h"
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#include <sys/protosw.h>
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#define _KERNEL
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#include <netinet/in.h>
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#include <netinet/in_systm.h>
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#include <netinet/ip.h>
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#include <netinet/in_pcb.h>
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#include <netinet/ip_var.h>
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#include <netinet/udp.h>
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#include <netinet/udp_var.h>
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/*
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 * udp_variables_oid:
118
 *   this is the top level oid that we want to register under.  This
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 *   is essentially a prefix, with the suffix appearing in the
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 *   variable below.
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 */
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123
 
124
oid udp_variables_oid[] = { 1,3,6,1,2,1,7 };
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/*
128
 * variable4 udp_variables:
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 *   this variable defines function callbacks and type return information
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 *   for the udp mib section
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 */
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133
 
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struct variable4 udp_variables[] = {
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/*  magic number        , variable type , ro/rw , callback fn  , L, oidsuffix */
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#define   UDPINDATAGRAMS        1
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  { UDPINDATAGRAMS      , ASN_COUNTER   , RONLY , var_udp, 1, { 1 } },
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#define   UDPNOPORTS            2
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  { UDPNOPORTS          , ASN_COUNTER   , RONLY , var_udp, 1, { 2 } },
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#define   UDPINERRORS           3
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  { UDPINERRORS         , ASN_COUNTER   , RONLY , var_udp, 1, { 3 } },
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#define   UDPOUTDATAGRAMS       4
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  { UDPOUTDATAGRAMS     , ASN_COUNTER   , RONLY , var_udp, 1, { 4 } },
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#define   UDPLOCALADDRESS       7
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  { UDPLOCALADDRESS     , ASN_IPADDRESS , RONLY , var_udpTable, 3, { 5,1,1 } },
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#define   UDPLOCALPORT          8
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  { UDPLOCALPORT        , ASN_INTEGER   , RONLY , var_udpTable, 3, { 5,1,2 } },
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//#define   IPV6UDPIFINDEX        13
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//  { IPV6UDPIFINDEX      , ASN_INTEGER   , RONLY , var_ipv6UdpTable, 3, { 6,1,3 } },
151
 
152
};
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/*    (L = length of the oidsuffix) */
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155
 
156
/*
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 * init_udp():
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 *   Initialization routine.  This is called when the agent starts up.
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 *   At a minimum, registration of your variables should take place here.
160
 */
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void init_udp(void) {
162
 
163
 
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  /* register ourselves with the agent to handle our mib tree */
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  REGISTER_MIB("udp", udp_variables, variable4,
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               udp_variables_oid);
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168
 
169
  /* place any other initialization junk you need here */
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}
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/*
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 * var_udp():
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 *   This function is called every time the agent gets a request for
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 *   a scalar variable that might be found within your mib section
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 *   registered above.  It is up to you to do the right thing and
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 *   return the correct value.
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 *     You should also correct the value of "var_len" if necessary.
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 *
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 *   Please see the documentation for more information about writing
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 *   module extensions, and check out the examples in the examples
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 *   and mibII directories.
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 */
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unsigned char *
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var_udp(struct variable *vp,
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                oid     *name,
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                size_t  *length,
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                int     exact,
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                size_t  *var_len,
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                WriteMethod **write_method)
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{
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    static long long_ret;
194
 
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    if (header_generic(vp,name,length,exact,var_len,write_method)
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        == MATCH_FAILED )
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        return NULL;
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    switch(vp->magic) {
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    case UDPINDATAGRAMS:
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        long_ret = udpstat.udps_ipackets;
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        return (u_char *) &long_ret;
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    case UDPNOPORTS:
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        long_ret = udpstat.udps_noport;
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        return (u_char *) &long_ret;
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    case UDPOUTDATAGRAMS:
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        long_ret = udpstat.udps_opackets;
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        return (u_char *) &long_ret;
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    case UDPINERRORS:
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        long_ret = udpstat.udps_hdrops + udpstat.udps_badsum +
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            udpstat.udps_badlen;
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        return (u_char *) &long_ret;
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    default:
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        ERROR_MSG("");
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    }
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    return NULL;
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}
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/*
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 * var_udpTable():
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 *   Handle this table separately from the scalar value case.
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 *   The workings of this are basically the same as for var_udpTable above.
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 */
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unsigned char *
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var_udpTable(struct variable *vp,
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            oid     *name,
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            size_t  *length,
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            int     exact,
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            size_t  *var_len,
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            WriteMethod **write_method)
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{
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    static long long_ret;
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    static unsigned char string[SPRINT_MAX_LEN];
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    register struct inpcb *inp;
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    register struct inpcb *low_inp = NULL;
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    oid                    lowest[16];
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    oid                    newname[16];
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    u_char                 *cp;
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    oid                    *op;
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    // This is indexed by local-address, local-port, at 1,3,6,1,2,1,7,5,1,1,
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    // so we get 1,3,6,1,2,1,7,5,1,?,A,B,C,D,port
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    // initial length is 10, out-length is 15,
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    // Address is offsets 10-13, port is offset 14.
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    // starting from udbtable, look in
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    //      low_pcb->inp_laddr.s_addr
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    // and  low_pcb->inp_lport
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    /* fill in object part of name for current (less sizeof instance part) */
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    memcpy((char *)newname, (char *)vp->name, (int)vp->namelen * sizeof(oid));
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    for (
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#ifdef CYGPKG_NET_OPENBSD_STACK
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         inp = udbtable.inpt_queue.cqh_first;
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         inp != (struct inpcb *)&udbtable.inpt_queue;
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         inp = inp->inp_queue.cqe_next
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#endif
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#ifdef CYGPKG_NET_FREEBSD_STACK
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         inp = udb.lh_first;
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         inp;
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         inp = inp->inp_list.le_next
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#endif
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         ) {
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        cp = (u_char *)&inp->inp_laddr.s_addr;
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        op = newname + 10;
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        *op++ = *cp++;
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        *op++ = *cp++;
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        *op++ = *cp++;
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        *op++ = *cp++;
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        newname[14] = ntohs(inp->inp_lport);
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        if (exact){
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            if (snmp_oid_compare(newname, 15, name, *length) == 0){
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                memcpy( (char *)lowest,(char *)newname, 15 * sizeof(oid));
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                low_inp = inp;
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                break;  /* no need to search further */
280
            }
281
        } else {
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            if ((snmp_oid_compare(newname, 15, name, *length) > 0) &&
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                (!low_inp || (snmp_oid_compare(newname, 15, lowest, 15) < 0))){
284
                /*
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                 * if new one is greater than input and closer to input than
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                 * previous lowest, save this one as the "next" one.
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                 */
288
                memcpy( (char *)lowest,(char *)newname, 15 * sizeof(oid));
289
                low_inp = inp;
290
            }
291
        }
292
    }
293
 
294
    if ( ! low_inp )
295
        return NULL;
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    memcpy( (char *)name,(char *)lowest, 15 * sizeof(oid));
298
    *length = 15;
299
    *var_len = sizeof( long_ret );
300
    *write_method = 0;
301
 
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    switch(vp->magic) {
303
 
304
    case UDPLOCALADDRESS:
305
        cp = (u_char *)&low_inp->inp_laddr.s_addr;
306
        string[0] = *cp++;
307
        string[1] = *cp++;
308
        string[2] = *cp++;
309
        string[3] = *cp++;
310
        *var_len = 4;
311
        return (unsigned char *) string;
312
 
313
    case UDPLOCALPORT:
314
        long_ret = (long)ntohs(low_inp->inp_lport);
315
        return (unsigned char *) &long_ret;
316
 
317
    default:
318
        ERROR_MSG("");
319
    }
320
    return NULL;
321
}
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// EOF udp.c

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