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/*********************************************************************
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*
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* SNMP Defs for Microchip TCP/IP Stack
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*
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*********************************************************************
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* FileName: SNMP.h
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* Dependencies: StackTsk.h
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* UDP.h
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* Processor: PIC18
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* Complier: MCC18 v1.00.50 or higher
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* HITECH PICC-18 V8.10PL1 or higher
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* Company: Microchip Technology, Inc.
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*
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* Software License Agreement
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*
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* Copyright © 2002-2007 Microchip Technology Inc. All rights
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* reserved.
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*
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* Microchip licenses to you the right to use, modify, copy, and
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* distribute:
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* (i) the Software when embedded on a Microchip microcontroller or
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* digital signal controller product (“Device”) which is
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* integrated into Licensee’s product; or
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* (ii) ONLY the Software driver source files ENC28J60.c and
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* ENC28J60.h ported to a non-Microchip device used in
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* conjunction with a Microchip ethernet controller for the
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* sole purpose of interfacing with the ethernet controller.
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*
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* You should refer to the license agreement accompanying this
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* Software for additional information regarding your rights and
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* obligations.
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*
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* THE SOFTWARE AND DOCUMENTATION ARE PROVIDED “AS IS” WITHOUT
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* WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING WITHOUT
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* LIMITATION, ANY WARRANTY OF MERCHANTABILITY, FITNESS FOR A
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* PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT SHALL
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* MICROCHIP BE LIABLE FOR ANY INCIDENTAL, SPECIAL, INDIRECT OR
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* CONSEQUENTIAL DAMAGES, LOST PROFITS OR LOST DATA, COST OF
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* PROCUREMENT OF SUBSTITUTE GOODS, TECHNOLOGY OR SERVICES, ANY CLAIMS
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* BY THIRD PARTIES (INCLUDING BUT NOT LIMITED TO ANY DEFENSE
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* THEREOF), ANY CLAIMS FOR INDEMNITY OR CONTRIBUTION, OR OTHER
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* SIMILAR COSTS, WHETHER ASSERTED ON THE BASIS OF CONTRACT, TORT
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* (INCLUDING NEGLIGENCE), BREACH OF WARRANTY, OR OTHERWISE.
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*
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* Author Date Comment
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*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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* Nilesh Rajbharti 1/9/03 Original (Rev 1.0)
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********************************************************************/
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#ifndef SNMP_H
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#define SNMP_H
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/*
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* This is the file that contains SNMP BIB file.
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* File name must contain all upper case letter and must match
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* with what was included in MPFS image.
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*/
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#define SNMP_BIB_FILE_NAME "SNMP.BIB"
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/*
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* This is the maximum length for community string.
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* Application must ensure that this length is observed.
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* SNMP module does not check for length overflow.
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*/
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#define SNMP_COMMUNITY_MAX_LEN (8)
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#define NOTIFY_COMMUNITY_LEN (SNMP_COMMUNITY_MAX_LEN)
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/*
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* Change this to match your OID string length.
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*/
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#define OID_MAX_LEN (15)
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#define SNMP_START_OF_VAR (0)
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#define SNMP_END_OF_VAR (0xff)
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#define SNMP_INDEX_INVALID (0xff)
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/*********************************************************************
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* Function: void SNMPInit(void)
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*
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* PreCondition: At least one UDP socket must be available.
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* UDPInit() is already called.
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*
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* Input: None
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*
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* Output: SNMP agent module is initialized.
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*
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* Side Effects: One UDP socket will be used.
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*
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* Overview: Initialize SNMP module internals
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*
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* Note: This function is called only once during lifetime
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* of the application.
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********************************************************************/
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void SNMPInit(void);
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/*********************************************************************
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* Function: BOOL SNMPTask(void)
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*
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* PreCondition: SNMPInit is already called.
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*
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* Input: None
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*
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* Output: TRUE if SNMP module has finished with a state
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* FALSE if a state has not been finished.
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*
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*
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* Side Effects: None
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*
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* Overview: Handle incoming SNMP requests as well as any
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* outgoing SNMP responses and timeout conditions
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*
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* Note: None.
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********************************************************************/
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BOOL SNMPTask(void);
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/*
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* This is the SNMP OID variable id.
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* This id is assigned via MIB file. Only dynamic and AgentID
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* variables can contian ID. MIB2BIB utility enforces this
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* rules when BIB was generated.
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*/
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typedef BYTE SNMP_ID;
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typedef BYTE SNMP_INDEX;
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typedef union _SNMP_VAL
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{
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DWORD dword;
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WORD word;
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BYTE byte;
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BYTE v[sizeof(DWORD)];
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} SNMP_VAL;
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/*********************************************************************
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* Function: BOOL SNMPGetVar(SNMP_ID var, SNMP_INDEX index,
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* BYTE *ref, SNMP_VAL* val)
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*
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* PreCondition: None
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*
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* Input: var - Variable id whose value is to be returned
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* index - Index of variable that should be
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* transferred
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* ref - Variable reference used to transfer
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* multi-byte data
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* It is always SNMP_START_OF_VAR when very
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* first byte is requested.
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* Otherwise, use this as a reference to
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* keep track of multi-byte transfers.
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* val - Pointer to up to 4 byte buffer.
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* If var data type is BYTE, transfer data
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* in val->byte
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* If var data type is WORD, transfer data in
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* val->word
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* If var data type is DWORD, transfer data in
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* val->dword
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* If var data type is IP_ADDRESS, transfer data
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* in val->v[] or val->dword
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* If var data type is COUNTER32, TIME_TICKS or
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* GAUGE32, transfer data in val->dword
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* If var data type is ASCII_STRING or OCTET_STRING
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* transfer data in val->byte using multi-byte
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* transfer mechanism.
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*
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* Output: TRUE if a value exists for given variable at given
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* index.
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* FALSE otherwise.
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*
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* Side Effects: None
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*
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* Overview: This is a callback function called by SNMP module.
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* SNMP user must implement this function in
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* user application and provide appropriate data when
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* called.
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*
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* Note: None
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********************************************************************/
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#ifdef __SNMP_C
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extern BOOL SNMPGetVar(SNMP_ID var, SNMP_INDEX index,
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BYTE *ref, SNMP_VAL* val);
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#endif
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/*********************************************************************
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* Function: BOOL SNMPGetNextIndex(SNMP_ID var,
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* SNMP_INDEX *index)
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*
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* PreCondition: None
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*
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* Input: var - Variable id whose value is to be returned
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* idnex - Next Index of variable that should be
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* transferred
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*
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* Output: TRUE if a next index value exists for given variable at given
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* index and index parameter contains next valid index.
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* FALSE otherwise.
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*
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* Side Effects: None
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*
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* Overview: This is a callback function called by SNMP module.
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* SNMP user must implement this function in
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* user application and provide appropriate data when
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* called. This function will only be called for
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* OID variable of type sequence.
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*
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* Note: None
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********************************************************************/
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#ifdef __SNMP_C
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extern BOOL SNMPGetNextIndex(SNMP_ID var, SNMP_INDEX *index);
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#endif
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/*********************************************************************
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* Function: BOOL SNMPIsValidSetLen(SNMP_ID var, BYTE len)
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*
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* PreCondition: None
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*
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* Input: var - Variable id whose value is to be set
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* len - Length value that is to be validated.
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*
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* Output: TRUE if given var can be set to given len
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* FALSE if otherwise.
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*
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* Side Effects: None
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*
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* Overview: This is a callback function called by module.
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* User application must implement this function.
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*
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* Note: This function will be called for only variables
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* that are defined as ASCII_STRING and OCTET_STRING
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* (i.e. data length greater than 4 bytes)
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********************************************************************/
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#ifdef __SNMP_C
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extern BOOL SNMPIsValidSetLen(SNMP_ID var, BYTE len);
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#endif
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/*********************************************************************
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* Function: BOOL SNMPSetVar(SNMP_ID var, SNMP_INDEX index,
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* BYTE ref, SNMP_VAL val)
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*
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* PreCondition: None
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*
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* Input: var - Variable id whose value is to be set
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* ref - Variable reference used to transfer
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* multi-byte data
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* 0 if first byte is set
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* otherwise nonzero value to indicate
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* corresponding byte being set.
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* val - Up to 4 byte data value.
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* If var data type is BYTE, variable
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* value is in val->byte
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* If var data type is WORD, variable
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* value is in val->word
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* If var data type is DWORD, variable
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* value is in val->dword.
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* If var data type is IP_ADDRESS, COUNTER32,
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* or GAUGE32, value is in val->dword
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* If var data type is OCTET_STRING, ASCII_STRING
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* value is in val->byte; multi-byte transfer
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* will be performed to transfer remaining
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* bytes of data.
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*
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* Output: TRUE if it is OK to set more byte(s).
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* FALSE if otherwise.
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*
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* Side Effects: None
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*
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* Overview: This is a callback function called by module.
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* User application must implement this function.
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*
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* Note: This function may get called more than once
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* depending on number of bytes in a specific
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* set request for given variable.
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********************************************************************/
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#ifdef __SNMP_C
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extern BOOL SNMPSetVar(SNMP_ID var, SNMP_INDEX index,
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BYTE ref, SNMP_VAL val);
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#endif
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| 282 |
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| 283 |
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| 284 |
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| 285 |
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/*
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* This is the list of SNMP action a remote NMS can perform.
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* This inforamtion is passed to application via
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* callback SNMPValidate.
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* Application should validate the action for given community
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* string.
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*/
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| 292 |
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typedef enum _SNMP_ACTION
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{
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SNMP_GET = 0xa0,
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SNMP_GET_NEXT = 0xa1,
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SNMP_GET_RESPONSE = 0xa2,
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SNMP_SET = 0xa3,
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SNMP_TRAP = 0xa4,
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SNMP_ACTION_UNKNOWN = 0
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} SNMP_ACTION;
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| 301 |
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| 302 |
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/*********************************************************************
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| 303 |
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* Function: BOOL SNMPValidate(SNMP_ACTION SNMPAction,
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| 304 |
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* char* community)
|
| 305 |
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*
|
| 306 |
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* PreCondition: SNMPInit is already called.
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*
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| 308 |
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* Input: SNMPAction - SNMP_GET to fetch a variable
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| 309 |
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* SNMP_SET to write to a variable
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| 310 |
|
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* community - Community string as sent by NMS
|
| 311 |
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*
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| 312 |
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* Output: TRUE if password matches with given community
|
| 313 |
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* FALSE if otherwise.
|
| 314 |
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*
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| 315 |
|
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* Side Effects: None
|
| 316 |
|
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*
|
| 317 |
|
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* Overview: This is a callback function called by module.
|
| 318 |
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* User application must implement this function
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| 319 |
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* and verify that community matches with predefined
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| 320 |
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* value.
|
| 321 |
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*
|
| 322 |
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* Note: This validation occurs for each NMS request.
|
| 323 |
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********************************************************************/
|
| 324 |
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#ifdef __SNMP_C
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| 325 |
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extern BOOL SNMPValidate(SNMP_ACTION SNMPAction, char* community);
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| 326 |
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#endif
|
| 327 |
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|
| 328 |
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| 329 |
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| 330 |
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/*********************************************************************
|
| 331 |
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* Function: void SNMPNotifyPrepare(IP_ADDR *remoteHost,
|
| 332 |
|
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* char *community,
|
| 333 |
|
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* BYTE communityLen,
|
| 334 |
|
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* SNMP_ID agentIDVar,
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| 335 |
|
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* BYTE notificationCode,
|
| 336 |
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* DWORD timestamp)
|
| 337 |
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*
|
| 338 |
|
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* PreCondition: SNMPInit is already called.
|
| 339 |
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*
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| 340 |
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* Input: remoteHost - pointer to remote Host IP address
|
| 341 |
|
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* community - Community string to use to notify
|
| 342 |
|
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* communityLen- Community string length
|
| 343 |
|
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* agentIDVar - System ID to use identify this agent
|
| 344 |
|
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* notificaitonCode - Notification Code to use
|
| 345 |
|
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* timestamp - Notification timestamp in 100th
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| 346 |
|
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* of second.
|
| 347 |
|
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*
|
| 348 |
|
|
* Output: None
|
| 349 |
|
|
*
|
| 350 |
|
|
* Side Effects: None
|
| 351 |
|
|
*
|
| 352 |
|
|
* Overview: This function prepares SNMP module to send SNMP
|
| 353 |
|
|
* trap (notification) to remote host.
|
| 354 |
|
|
*
|
| 355 |
|
|
* Note: This is first of series of functions to complete
|
| 356 |
|
|
* SNMP notification.
|
| 357 |
|
|
********************************************************************/
|
| 358 |
|
|
void SNMPNotifyPrepare(IP_ADDR *remoteHost,
|
| 359 |
|
|
char *community,
|
| 360 |
|
|
BYTE communityLen,
|
| 361 |
|
|
SNMP_ID agentIDVar,
|
| 362 |
|
|
BYTE notificationCode,
|
| 363 |
|
|
DWORD timestamp);
|
| 364 |
|
|
|
| 365 |
|
|
|
| 366 |
|
|
/*********************************************************************
|
| 367 |
|
|
* Function: BOOL SNMPIsNotifyReady(IP_ADDR *remoteHost)
|
| 368 |
|
|
*
|
| 369 |
|
|
* PreCondition: SNMPNotifyPrepare is already called and returned
|
| 370 |
|
|
* TRUE.
|
| 371 |
|
|
*
|
| 372 |
|
|
* Input: remoteHost - pointer to remote Host IP address
|
| 373 |
|
|
*
|
| 374 |
|
|
* Output: TRUE if remoteHost IP address is resolved and
|
| 375 |
|
|
* SNMPNotify may be called.
|
| 376 |
|
|
* FALSE otherwise.
|
| 377 |
|
|
* This would fail if there were not UDP socket
|
| 378 |
|
|
* to open.
|
| 379 |
|
|
*
|
| 380 |
|
|
* Side Effects: None
|
| 381 |
|
|
*
|
| 382 |
|
|
* Overview: This function resolves given remoteHost IP address
|
| 383 |
|
|
* into MAC address using ARP module.
|
| 384 |
|
|
* If remoteHost is not aviailable, this function
|
| 385 |
|
|
* would never return TRUE.
|
| 386 |
|
|
* Application must implement timeout logic to
|
| 387 |
|
|
* handle "remoteHost not avialable" situation.
|
| 388 |
|
|
*
|
| 389 |
|
|
* Note: None
|
| 390 |
|
|
********************************************************************/
|
| 391 |
|
|
BOOL SNMPIsNotifyReady(IP_ADDR *remoteHost);
|
| 392 |
|
|
|
| 393 |
|
|
|
| 394 |
|
|
/*********************************************************************
|
| 395 |
|
|
* Function: BOOL SNMPNotify(SNMP_ID var,
|
| 396 |
|
|
* SNMP_VAL val,
|
| 397 |
|
|
* SNMP_INDEX index)
|
| 398 |
|
|
*
|
| 399 |
|
|
* PreCondition: SNMPIsNotified is already called and returned
|
| 400 |
|
|
* TRUE.
|
| 401 |
|
|
*
|
| 402 |
|
|
* Input: var - SNMP var ID that is to be used in
|
| 403 |
|
|
* notification
|
| 404 |
|
|
* val - Value of var. Only value of
|
| 405 |
|
|
* BYTE, WORD or DWORD can be sent.
|
| 406 |
|
|
* index - Index of var. If this var is a single,
|
| 407 |
|
|
* index would be 0, or else if this var
|
| 408 |
|
|
* is a sequence, index could be any
|
| 409 |
|
|
* value from 0 to 127.
|
| 410 |
|
|
*
|
| 411 |
|
|
* Output: TRUE if SNMP notification was successful sent.
|
| 412 |
|
|
* This does not guarantee that remoteHost recieved
|
| 413 |
|
|
* it.
|
| 414 |
|
|
* FALSE otherwise.
|
| 415 |
|
|
* This would fail under following contions:
|
| 416 |
|
|
* 1) Given SNMP_BIB_FILE does not exist in MPFS
|
| 417 |
|
|
* 2) Given var does not exist.
|
| 418 |
|
|
* 3) Previously given agentID does not exist
|
| 419 |
|
|
* 4) Data type of given var is unknown - only
|
| 420 |
|
|
* possible if MPFS itself was corrupted.
|
| 421 |
|
|
*
|
| 422 |
|
|
* Side Effects: None
|
| 423 |
|
|
*
|
| 424 |
|
|
* Overview: This function creates SNMP trap PDU and sends it
|
| 425 |
|
|
* to previously specified remoteHost.
|
| 426 |
|
|
*
|
| 427 |
|
|
* Note: None
|
| 428 |
|
|
********************************************************************/
|
| 429 |
|
|
BOOL SNMPNotify(SNMP_ID var, SNMP_VAL val, SNMP_INDEX index);
|
| 430 |
|
|
|
| 431 |
|
|
|
| 432 |
|
|
|
| 433 |
|
|
|
| 434 |
|
|
|
| 435 |
|
|
#endif
|
Parent Directory
| 
Revision Log