git.sur5r.net Git - openldap/blob - servers/slapd/back-dnssrv/search.c

   1 /* search.c - DNS SRV backend search function */
   2 /* $OpenLDAP$ */
   3 /*
   4  * Copyright 2000-2002 The OpenLDAP Foundation, All Rights Reserved.
   5  * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
   6  */
   7
   8
   9 #include "portable.h"
  10
  11 #include <stdio.h>
  12
  13 #include <ac/socket.h>
  14 #include <ac/string.h>
  15 #include <ac/time.h>
  16
  17 #include "slap.h"
  18 #include "external.h"
  19
  20 int
  21 dnssrv_back_search(
  22     Backend     *be,
  23     Connection  *conn,
  24     Operation   *op,
  25     struct berval       *dn,
  26     struct berval       *ndn,
  27     int         scope,
  28     int         deref,
  29     int         size,
  30     int         time,
  31     Filter      *filter,
  32     struct berval       *filterstr,
  33     AttributeName       *attrs,
  34     int         attrsonly )
  35 {
  36         int i;
  37         int rc;
  38         char *domain = NULL;
  39         char *hostlist = NULL;
  40         char **hosts = NULL;
  41         char *refdn;
  42         struct berval nrefdn = { 0, NULL };
  43         BerVarray urls = NULL;
  44
  45         assert( get_manageDSAit( op ) );
  46
  47         if( ldap_dn2domain( dn->bv_val, &domain ) ) {
  48                 send_ldap_result( conn, op, LDAP_REFERRAL,
  49                         NULL, NULL, default_referral, NULL );
  50                 goto done;
  51         }
  52
  53         Debug( LDAP_DEBUG_TRACE, "DNSSRV: dn=\"%s\" -> domain=\"%s\"\n",
  54                 dn->bv_len ? dn->bv_val : "",
  55                 domain == NULL ? "" : domain,
  56                 0 );
  57
  58         if( ( rc = ldap_domain2hostlist( domain, &hostlist ) ) ) {
  59                 Debug( LDAP_DEBUG_TRACE, "DNSSRV: domain2hostlist returned %d\n",
  60                         rc, 0, 0 );
  61                 send_ldap_result( conn, op, LDAP_NO_SUCH_OBJECT,
  62                         NULL, "no DNS SRV RR available for DN", NULL, NULL );
  63                 goto done;
  64         }
  65
  66         hosts = str2charray( hostlist, " " );
  67
  68         if( hosts == NULL ) {
  69                 Debug( LDAP_DEBUG_TRACE, "DNSSRV: str2charrary error\n", 0, 0, 0 );
  70                 send_ldap_result( conn, op, LDAP_OTHER,
  71                         NULL, "problem processing DNS SRV records for DN", NULL, NULL );
  72                 goto done;
  73         }
  74
  75         for( i=0; hosts[i] != NULL; i++) {
  76                 struct berval url;
  77
  78                 url.bv_len = sizeof("ldap://")-1 + strlen(hosts[i]);
  79                 url.bv_val = ch_malloc( url.bv_len + 1 );
  80
  81                 strcpy( url.bv_val, "ldap://" );
  82                 strcpy( &url.bv_val[sizeof("ldap://")-1], hosts[i] );
  83
  84                 if( ber_bvarray_add( &urls, &url ) < 0 ) {
  85                         free( url.bv_val );
  86                         send_ldap_result( conn, op, LDAP_OTHER,
  87                         NULL, "problem processing DNS SRV records for DN",
  88                         NULL, NULL );
  89                         goto done;
  90                 }
  91         }
  92
  93         Statslog( LDAP_DEBUG_STATS,
  94             "conn=%lu op=%lu DNSSRV p=%d dn=\"%s\" url=\"%s\"\n",
  95             op->o_connid, op->o_opid, op->o_protocol,
  96                 dn->bv_len ? dn->bv_val : "", urls[0].bv_val );
  97
  98         Debug( LDAP_DEBUG_TRACE,
  99                 "DNSSRV: ManageDSAit scope=%d dn=\"%s\" -> url=\"%s\"\n",
 100                 scope,
 101                 dn->bv_len ? dn->bv_val : "",
 102                 urls[0].bv_val );
 103
 104         rc = ldap_domain2dn(domain, &refdn);
 105
 106         if( rc != LDAP_SUCCESS ) {
 107                 send_ldap_result( conn, op, LDAP_OTHER,
 108                         NULL, "DNS SRV problem processing manageDSAit control",
 109                         NULL, NULL );
 110                 goto done;
 111
 112         } else {
 113                 struct berval bv;
 114                 bv.bv_val = refdn;
 115                 bv.bv_len = strlen( refdn );
 116
 117                 rc = dnNormalize2( NULL, &bv, &nrefdn );
 118                 if( rc != LDAP_SUCCESS ) {
 119                         send_ldap_result( conn, op, LDAP_OTHER,
 120                                 NULL, "DNS SRV problem processing manageDSAit control",
 121                                 NULL, NULL );
 122                         goto done;
 123                 }
 124         }
 125
 126         if( !dn_match( &nrefdn, ndn ) ) {
 127                 /* requested dn is subordinate */
 128
 129                 Debug( LDAP_DEBUG_TRACE,
 130                         "DNSSRV: dn=\"%s\" subordindate to refdn=\"%s\"\n",
 131                         dn->bv_len ? dn->bv_val : "",
 132                         refdn == NULL ? "" : refdn,
 133                         NULL );
 134
 135                 send_ldap_result( conn, op, LDAP_NO_SUCH_OBJECT,
 136                         refdn, NULL,
 137                         NULL, NULL );
 138
 139         } else if ( scope == LDAP_SCOPE_ONELEVEL ) {
 140                 send_ldap_result( conn, op, LDAP_SUCCESS,
 141                         NULL, NULL, NULL, NULL );
 142
 143         } else {
 144                 struct berval   vals[2];
 145                 Entry *e = ch_calloc( 1, sizeof(Entry) );
 146                 AttributeDescription *ad_objectClass
 147                         = slap_schema.si_ad_objectClass;
 148                 AttributeDescription *ad_ref = slap_schema.si_ad_ref;
 149                 e->e_dn = strdup( dn->bv_val );
 150                 e->e_name.bv_len = dn->bv_len;
 151                 e->e_ndn = strdup( ndn->bv_val );
 152                 e->e_nname.bv_len = ndn->bv_len;
 153
 154                 e->e_attrs = NULL;
 155                 e->e_private = NULL;
 156
 157                 vals[1].bv_val = NULL;
 158
 159                 vals[0].bv_val = "top";
 160                 vals[0].bv_len = sizeof("top")-1;
 161                 attr_merge( e, ad_objectClass, vals );
 162
 163                 vals[0].bv_val = "referral";
 164                 vals[0].bv_len = sizeof("referral")-1;
 165                 attr_merge( e, ad_objectClass, vals );
 166
 167                 vals[0].bv_val = "extensibleObject";
 168                 vals[0].bv_len = sizeof("extensibleObject")-1;
 169                 attr_merge( e, ad_objectClass, vals );
 170
 171                 {
 172                         AttributeDescription *ad = NULL;
 173                         const char *text;
 174
 175                         rc = slap_str2ad( "dc", &ad, &text );
 176
 177                         if( rc == LDAP_SUCCESS ) {
 178                                 char *p;
 179                                 vals[0].bv_val = ch_strdup( domain );
 180
 181                                 p = strchr( vals[0].bv_val, '.' );
 182
 183                                 if( p == vals[0].bv_val ) {
 184                                         vals[0].bv_val[1] = '\0';
 185                                 } else if ( p != NULL ) {
 186                                         *p = '\0';
 187                                 }
 188
 189                                 vals[0].bv_len = strlen(vals[0].bv_val);
 190                                 attr_merge( e, ad, vals );
 191                         }
 192                 }
 193
 194                 {
 195                         AttributeDescription *ad = NULL;
 196                         const char *text;
 197
 198                         rc = slap_str2ad( "associatedDomain", &ad, &text );
 199
 200                         if( rc == LDAP_SUCCESS ) {
 201                                 vals[0].bv_val = domain;
 202                                 vals[0].bv_len = strlen(domain);
 203                                 attr_merge( e, ad, vals );
 204                         }
 205                 }
 206
 207                 attr_merge( e, ad_ref, urls );
 208
 209                 rc = test_filter( be, conn, op, e, filter );
 210
 211                 if( rc == LDAP_COMPARE_TRUE ) {
 212                         send_search_entry( be, conn, op,
 213                                 e, attrs, attrsonly, NULL );
 214                 }
 215
 216                 entry_free( e );
 217
 218                 send_ldap_result( conn, op, LDAP_SUCCESS,
 219                         NULL, NULL, NULL, NULL );
 220         }
 221
 222         if ( refdn ) free( refdn );
 223         if ( nrefdn.bv_val ) free( nrefdn.bv_val );
 224
 225 done:
 226         if( domain != NULL ) ch_free( domain );
 227         if( hostlist != NULL ) ch_free( hostlist );
 228         if( hosts != NULL ) charray_free( hosts );
 229         if( urls != NULL ) ber_bvarray_free( urls );
 230         return 0;
 231 }