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      1 /*	$NetBSD: protocol.c,v 1.4 2025/09/05 21:16:17 christos Exp $	*/
      2 
      3 /* protocol.c - network protocol lookup routines */
      4 /* $OpenLDAP$ */
      5 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
      6  *
      7  * Copyright 2008-2024 The OpenLDAP Foundation.
      8  * Portions Copyright 2008 by Howard Chu, Symas Corp.
      9  * All rights reserved.
     10  *
     11  * Redistribution and use in source and binary forms, with or without
     12  * modification, are permitted only as authorized by the OpenLDAP
     13  * Public License.
     14  *
     15  * A copy of this license is available in the file LICENSE in the
     16  * top-level directory of the distribution or, alternatively, at
     17  * <http://www.OpenLDAP.org/license.html>.
     18  */
     19 /*
     20  * ACKNOWLEDGEMENTS:
     21  * This code references portions of the nss-ldapd package
     22  * written by Arthur de Jong. The nss-ldapd code was forked
     23  * from the nss-ldap library written by Luke Howard.
     24  */
     25 
     26 #include "nssov.h"
     27 
     28 /* ( nisSchema.2.4 NAME 'ipProtocol' SUP top STRUCTURAL
     29  *   DESC 'Abstraction of an IP protocol. Maps a protocol number
     30  *         to one or more names. The distinguished value of the cn
     31  *         attribute denotes the protocol's canonical name'
     32  *   MUST ( cn $ ipProtocolNumber )
     33  *    MAY description )
     34  */
     35 
     36 /* the basic search filter for searches */
     37 static struct berval protocol_filter = BER_BVC("(objectClass=ipProtocol)");
     38 
     39 /* the attributes used in searches */
     40 static struct berval protocol_keys[] = {
     41 	BER_BVC("cn"),
     42 	BER_BVC("ipProtocolNumber"),
     43 	BER_BVNULL
     44 };
     45 
     46 NSSOV_INIT(protocol)
     47 
     48 NSSOV_CBPRIV(protocol,
     49 	char buf[256];
     50 	struct berval name;
     51 	struct berval numb;);
     52 
     53 static int write_protocol(nssov_protocol_cbp *cbp,Entry *entry)
     54 {
     55 	int32_t tmpint32;
     56 	int i,numname,dupname,proto;
     57 	struct berval name,*names;
     58 	Attribute *a;
     59 	char *tmp;
     60 
     61 	/* get the most canonical name */
     62 	nssov_find_rdnval( &entry->e_nname, cbp->mi->mi_attrs[0].an_desc, &name );
     63 	/* get the other names for the protocol */
     64 	a = attr_find( entry->e_attrs, cbp->mi->mi_attrs[0].an_desc );
     65 	if ( !a || !a->a_vals )
     66 	{
     67 		Debug(LDAP_DEBUG_ANY,"protocol entry %s does not contain %s value\n",
     68 			entry->e_name.bv_val, cbp->mi->mi_attrs[0].an_desc->ad_cname.bv_val );
     69 		return 0;
     70 	}
     71 	names = a->a_vals;
     72 	numname = a->a_numvals;
     73 	/* if the name is not yet found, get the first entry from names */
     74 	if (BER_BVISNULL(&name)) {
     75 		name=names[0];
     76 		dupname = 0;
     77 	} else {
     78 		dupname = -1;
     79 		for (i=0; i<numname; i++) {
     80 			if ( bvmatch(&name, &a->a_nvals[i])) {
     81 				dupname = i;
     82 				break;
     83 			}
     84 		}
     85 	}
     86 	/* get the protocol number */
     87 	a = attr_find( entry->e_attrs, cbp->mi->mi_attrs[1].an_desc );
     88 	if ( !a || !a->a_vals )
     89 	{
     90 		Debug(LDAP_DEBUG_ANY,"protocol entry %s does not contain %s value\n",
     91 			entry->e_name.bv_val, cbp->mi->mi_attrs[1].an_desc->ad_cname.bv_val );
     92 		return 0;
     93 	} else if ( a->a_numvals > 1 ) {
     94 		Debug(LDAP_DEBUG_ANY,"protocol entry %s contains multiple %s values\n",
     95 			entry->e_name.bv_val, cbp->mi->mi_attrs[1].an_desc->ad_cname.bv_val );
     96 	}
     97 	proto=(int)strtol(a->a_vals[0].bv_val,&tmp,0);
     98 	if (*tmp)
     99 	{
    100 		Debug(LDAP_DEBUG_ANY,"protocol entry %s contains non-numeric %s value\n",
    101 			entry->e_name.bv_val, cbp->mi->mi_attrs[1].an_desc->ad_cname.bv_val );
    102 		return 0;
    103 	}
    104 	/* write the entry */
    105 	WRITE_INT32(cbp->fp,NSLCD_RESULT_BEGIN);
    106 	WRITE_BERVAL(cbp->fp,&name);
    107 	if ( dupname >= 0 ) {
    108 		WRITE_INT32(cbp->fp,numname-1);
    109 	} else {
    110 		WRITE_INT32(cbp->fp,numname);
    111 	}
    112 	for (i=0;i<numname;i++) {
    113 		if (i == dupname) continue;
    114 		WRITE_BERVAL(cbp->fp,&names[i]);
    115 	}
    116 	WRITE_INT32(cbp->fp,proto);
    117 	return 0;
    118 }
    119 
    120 NSSOV_CB(protocol)
    121 
    122 NSSOV_HANDLE(
    123 	protocol,byname,
    124 	char fbuf[1024];
    125 	struct berval filter = {sizeof(fbuf)};
    126 	filter.bv_val = fbuf;
    127 	BER_BVZERO(&cbp.numb);
    128 	READ_STRING(fp,cbp.buf);
    129 	cbp.name.bv_len = tmpint32;
    130 	cbp.name.bv_val = cbp.buf;,
    131 	Debug(LDAP_DEBUG_TRACE,"nssov_protocol_byname(%s)\n",cbp.name.bv_val);,
    132 	NSLCD_ACTION_PROTOCOL_BYNAME,
    133 	nssov_filter_byname(cbp.mi,0,&cbp.name,&filter)
    134 )
    135 
    136 NSSOV_HANDLE(
    137 	protocol,bynumber,
    138 	int protocol;
    139 	char fbuf[1024];
    140 	struct berval filter = {sizeof(fbuf)};
    141 	filter.bv_val = fbuf;
    142 	READ_INT32(fp,protocol);
    143 	cbp.numb.bv_val = cbp.buf;
    144 	cbp.numb.bv_len = snprintf(cbp.buf,sizeof(cbp.buf),"%d",protocol);
    145 	BER_BVZERO(&cbp.name);,
    146 	Debug(LDAP_DEBUG_TRACE,"nssov_protocol_bynumber(%s)\n",cbp.numb.bv_val);,
    147 	NSLCD_ACTION_PROTOCOL_BYNUMBER,
    148 	nssov_filter_byid(cbp.mi,1,&cbp.numb,&filter)
    149 )
    150 
    151 NSSOV_HANDLE(
    152 	protocol,all,
    153 	struct berval filter;
    154 	/* no parameters to read */,
    155 	Debug(LDAP_DEBUG_TRACE,"nssov_protocol_all()\n");,
    156 	NSLCD_ACTION_PROTOCOL_ALL,
    157 	(filter=cbp.mi->mi_filter,0)
    158 )
    159