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/***************************************************************************/
/* */
/* Project: OpenSLP - OpenSource implementation of Service Location */
/* Protocol */
/* */
/* File: slp_dhcp.h */
/* */
/* Abstract: Common for DHCP Lookup routines for OpenSLP. */
/* */
/*-------------------------------------------------------------------------*/
/* */
/* Please submit patches to http://www.openslp.org */
/* */
/*-------------------------------------------------------------------------*/
/* */
/* Copyright (C) 2000 Caldera Systems, Inc */
/* All rights reserved. */
/* */
/* Redistribution and use in source and binary forms, with or without */
/* modification, are permitted provided that the following conditions are */
/* met: */
/* */
/* Redistributions of source code must retain the above copyright */
/* notice, this list of conditions and the following disclaimer. */
/* */
/* Redistributions in binary form must reproduce the above copyright */
/* notice, this list of conditions and the following disclaimer in */
/* the documentation and/or other materials provided with the */
/* distribution. */
/* */
/* Neither the name of Caldera Systems nor the names of its */
/* contributors may be used to endorse or promote products derived */
/* from this software without specific prior written permission. */
/* */
/* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS */
/* `AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT */
/* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR */
/* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE CALDERA */
/* SYSTEMS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, */
/* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT */
/* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, */
/* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON */
/* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT */
/* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE */
/* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
/***************************************************************************/
#ifndef SLP_DHCP_H_INCLUDED
#define SLP_DHCP_H_INCLUDED
#include <stddef.h>
/* Applicable IANA BOOTP/DHCP option tag values */
#define TAG_PAD 0 /* Fixed size, 1 byte (0), no length */
#define TAG_DHCP_MSG_TYPE 53
#define TAG_DHCP_PARAM_REQ 55
#define TAG_CLIENT_IDENTIFIER 61
#define TAG_SLP_DA 78
#define TAG_SLP_SCOPE 79
#define TAG_END 255
/* The Novell (pre-rfc2610 or draft 3) format for the DHCP TAG_SLP_DA option
has the 'mandatory' flag containing other bits besides simply 'mandatory'.
These flags are important because if the DA_NAME_PRESENT flag is set, then
we know we are parsing this format, otherwise it's the rfc2610 format. */
#define DA_NAME_PRESENT 0x80 /* DA name present in option */
#define DA_NAME_IS_DNS 0x40 /* DA name is host name or DNS name */
#define DISABLE_DA_MCAST 0x20 /* Multicast for DA's is disabled */
#define SCOPE_PRESENT 0x10 /* Scope is present in option */
/* Character type encodings that we expect to be supported. */
#define CT_ASCII 3 /* standard 7 or 8 bit ASCII */
#define CT_UTF8 106 /* UTF-8 */
#define CT_UNICODE 1000 /* normal Unicode */
/*=========================================================================*/
typedef int DHCPInfoCallBack(int tag, void *optdata,
size_t optdatasz, void *context);
/* Callback routine used by DHCPGetOptionInfo - called once for each */
/* option specified in the option array passed to that routine. If this */
/* routine returns a non-zero value, that value will be immediately */
/* returned to the caller of DHCPGetOptionInfo. */
/* */
/* Returns - zero on success, non-zero on 'stop processing options'. */
/*=========================================================================*/
/*=========================================================================*/
int DHCPGetOptionInfo(unsigned char *dhcpOptCodes, int dhcpOptCodeCnt,
DHCPInfoCallBack *dhcpInfoCB, void *context);
/* Calls dhcpInfoCB once for each requested option in dhcpOptCodes. */
/* */
/* Returns - zero on success, non-zero on failure */
/*=========================================================================*/
/*=========================================================================*/
int DHCPParseSLPTags(int tag, void *optdata, size_t optdatasz, void *context);
/* Callback routined tests each DA discovered from DHCP and add it to the */
/* DA cache. */
/* */
/* Returns: 0 on success, or nonzero to stop being called. */
/* This type definition is used as the context block by this callback. */
typedef struct _DHCPContext
{
int addrlistlen;
int scopelistlen;
char scopelist[256];
unsigned char addrlist[256];
} DHCPContext;
/*=========================================================================*/
#endif
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