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      1 /*	$NetBSD: alias.c,v 1.4 2025/09/05 21:16:17 christos Exp $	*/
      2 
      3 /* alias.c - mail alias 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 /* ACKNOWLEDGEMENTS:
     20  * This code references portions of the nss-ldapd package
     21  * written by Arthur de Jong. The nss-ldapd code was forked
     22  * from the nss-ldap library written by Luke Howard.
     23  */
     24 
     25 #include "nssov.h"
     26 
     27 /* Vendor-specific attributes and object classes.
     28  * (Mainly from Sun.)
     29  * ( 1.3.6.1.4.1.42.2.27.1.2.5 NAME 'nisMailAlias' SUP top STRUCTURAL
     30  *   DESC 'NIS mail alias'
     31  *   MUST cn
     32  *   MAY rfc822MailMember )
     33  */
     34 
     35 /* the basic search filter for searches */
     36 static struct berval alias_filter = BER_BVC("(objectClass=nisMailAlias)");
     37 
     38 /* the attributes to request with searches */
     39 static struct berval alias_keys[] = {
     40 	BER_BVC("cn"),
     41 	BER_BVC("rfc822MailMember"),
     42 	BER_BVNULL
     43 };
     44 
     45 NSSOV_INIT(alias)
     46 
     47 NSSOV_CBPRIV(alias,
     48 	struct berval name;
     49 	char buf[256];);
     50 
     51 static int write_alias(nssov_alias_cbp *cbp,Entry *entry)
     52 {
     53 	int32_t tmpint32,tmp2int32,tmp3int32;
     54 	struct berval tmparr[2], empty;
     55 	struct berval *names, *members;
     56 	Attribute *a;
     57 	int i;
     58 
     59 	/* get the name of the alias */
     60 	if (BER_BVISNULL(&cbp->name))
     61 	{
     62 		a = attr_find(entry->e_attrs, cbp->mi->mi_attrs[0].an_desc);
     63 		if ( !a )
     64 		{
     65 			Debug(LDAP_DEBUG_ANY,"alias entry %s does not contain %s value\n",
     66 				entry->e_name.bv_val,cbp->mi->mi_attrs[0].an_desc->ad_cname.bv_val );
     67 			return 0;
     68 		}
     69 		names = a->a_vals;
     70 	}
     71 	else
     72 	{
     73 		names=tmparr;
     74 		names[0]=cbp->name;
     75 		BER_BVZERO(&names[1]);
     76 	}
     77 	/* get the members of the alias */
     78  	a = attr_find(entry->e_attrs, cbp->mi->mi_attrs[1].an_desc);
     79 	if ( !a ) {
     80 		BER_BVZERO( &empty );
     81 		members = &empty;
     82 	} else {
     83 		members = a->a_vals;
     84 	}
     85 	/* for each name, write an entry */
     86 	for (i=0;!BER_BVISNULL(&names[i]);i++)
     87 	{
     88 		WRITE_INT32(cbp->fp,NSLCD_RESULT_BEGIN);
     89 		WRITE_BERVAL(cbp->fp,&names[i]);
     90 		WRITE_BVARRAY(cbp->fp,members);
     91 	}
     92 	return 0;
     93 }
     94 
     95 NSSOV_CB(alias)
     96 
     97 NSSOV_HANDLE(
     98 	alias,byname,
     99 	char fbuf[1024];
    100 	struct berval filter = {sizeof(fbuf)};
    101 	filter.bv_val = fbuf;
    102 	READ_STRING(fp,cbp.buf);
    103 	cbp.name.bv_len = tmpint32;
    104 	cbp.name.bv_val = cbp.buf;,
    105 	Debug(LDAP_DEBUG_TRACE,"nssov_alias_byname(%s)\n",cbp.name.bv_val);,
    106 	NSLCD_ACTION_ALIAS_BYNAME,
    107 	nssov_filter_byname(cbp.mi,0,&cbp.name,&filter)
    108 )
    109 
    110 NSSOV_HANDLE(
    111 	alias,all,
    112 	struct berval filter;
    113 	/* no parameters to read */
    114 	BER_BVZERO(&cbp.name);,
    115 	Debug(LDAP_DEBUG,"nssov_alias_all()\n");,
    116 	NSLCD_ACTION_ALIAS_ALL,
    117 	(filter=cbp.mi->mi_filter,0)
    118 )
    119