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 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     const char  *filterstr,
  33     struct berval       **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, *nrefdn;
  42         struct berval **urls = NULL;
  43
  44         assert( get_manageDSAit( op ) );
  45
  46         if( ldap_dn2domain( dn->bv_val, &domain ) ) {
  47                 send_ldap_result( conn, op, LDAP_REFERRAL,
  48                         NULL, NULL, default_referral, NULL );
  49                 goto done;
  50         }
  51
  52         Debug( LDAP_DEBUG_TRACE, "DNSSRV: dn=\"%s\" -> domain=\"%s\"\n",
  53                 dn->bv_len ? dn->bv_val : "",
  54                 domain == NULL ? "" : domain,
  55                 0 );
  56
  57         if( rc = ldap_domain2hostlist( domain, &hostlist ) ) {
  58                 Debug( LDAP_DEBUG_TRACE, "DNSSRV: domain2hostlist returned %d\n",
  59                         rc, 0, 0 );
  60                 send_ldap_result( conn, op, LDAP_NO_SUCH_OBJECT,
  61                         NULL, "no DNS SRV RR available for DN", NULL, NULL );
  62                 goto done;
  63         }
  64
  65         hosts = str2charray( hostlist, " " );
  66
  67         if( hosts == NULL ) {
  68                 Debug( LDAP_DEBUG_TRACE, "DNSSRV: str2charrary error\n", 0, 0, 0 );
  69                 send_ldap_result( conn, op, LDAP_OTHER,
  70                         NULL, "problem processing DNS SRV records for DN", NULL, NULL );
  71                 goto done;
  72         }
  73
  74         for( i=0; hosts[i] != NULL; i++) {
  75                 struct berval *url = ch_malloc( sizeof( struct berval ) );
  76
  77                 url->bv_len = sizeof("ldap://")-1 + strlen(hosts[i]);
  78                 url->bv_val = ch_malloc( url->bv_len + 1 );
  79
  80                 strcpy( url->bv_val, "ldap://" );
  81                 strcpy( &url->bv_val[sizeof("ldap://")-1], hosts[i] );
  82
  83                 if( ber_bvecadd( &urls, url ) < 0 ) {
  84                         ber_bvfree( url );
  85                         send_ldap_result( conn, op, LDAP_OTHER,
  86                                 NULL, "problem processing DNS SRV records for DN",
  87                                 NULL, NULL );
  88                         goto done;
  89                 }
  90         }
  91
  92         Statslog( LDAP_DEBUG_STATS,
  93             "conn=%ld op=%d DNSSRV p=%d dn=\"%s\" url=\"%s\"\n",
  94             op->o_connid, op->o_opid, op->o_protocol,
  95                 dn->bv_len ? dn->bv_val : "", urls[0]->bv_val );
  96
  97         Debug( LDAP_DEBUG_TRACE,
  98                 "DNSSRV: ManageDSAit scope=%d dn=\"%s\" -> url=\"%s\"\n",
  99                 scope,
 100                 dn->bv_len ? dn->bv_val : "",
 101                 urls[0]->bv_val );
 102
 103         rc = ldap_domain2dn(domain, &refdn);
 104
 105         if( rc != LDAP_SUCCESS ) {
 106                 send_ldap_result( conn, op, LDAP_OTHER,
 107                         NULL, "DNS SRV problem processing manageDSAit control",
 108                         NULL, NULL );
 109                 goto done;
 110         }
 111
 112         nrefdn = ch_strdup( refdn );
 113         dn_normalize(nrefdn);
 114
 115         if( strcmp( nrefdn, ndn->bv_val ) != 0 ) {
 116                 /* requested dn is subordinate */
 117
 118                 Debug( LDAP_DEBUG_TRACE,
 119                         "DNSSRV: dn=\"%s\" subordindate to refdn=\"%s\"\n",
 120                         dn->bv_len ? dn->bv_val : "",
 121                         refdn == NULL ? "" : refdn,
 122                         NULL );
 123
 124                 send_ldap_result( conn, op, LDAP_NO_SUCH_OBJECT,
 125                         refdn, NULL,
 126                         NULL, NULL );
 127
 128         } else if ( scope == LDAP_SCOPE_ONELEVEL ) {
 129                 send_ldap_result( conn, op, LDAP_SUCCESS,
 130                         NULL, NULL, NULL, NULL );
 131
 132         } else {
 133                 struct berval   val;
 134                 struct berval   *vals[2];
 135                 Entry *e = ch_calloc( 1, sizeof(Entry) );
 136                 AttributeDescription *ad_objectClass
 137                         = slap_schema.si_ad_objectClass;
 138                 AttributeDescription *ad_ref = slap_schema.si_ad_ref;
 139                 e->e_dn = strdup( dn->bv_val );
 140                 e->e_name.bv_len = dn->bv_len;
 141                 e->e_ndn = strdup( ndn->bv_val );
 142                 e->e_nname.bv_len = ndn->bv_len;
 143
 144                 e->e_attrs = NULL;
 145                 e->e_private = NULL;
 146
 147                 vals[0] = &val;
 148                 vals[1] = NULL;
 149
 150                 val.bv_val = "top";
 151                 val.bv_len = sizeof("top")-1;
 152                 attr_merge( e, ad_objectClass, vals );
 153
 154                 val.bv_val = "referral";
 155                 val.bv_len = sizeof("referral")-1;
 156                 attr_merge( e, ad_objectClass, vals );
 157
 158                 val.bv_val = "extensibleObject";
 159                 val.bv_len = sizeof("extensibleObject")-1;
 160                 attr_merge( e, ad_objectClass, vals );
 161
 162                 {
 163                         AttributeDescription *ad = NULL;
 164                         const char *text;
 165
 166                         rc = slap_str2ad( "dc", &ad, &text );
 167
 168                         if( rc == LDAP_SUCCESS ) {
 169                                 char *p;
 170                                 val.bv_val = ch_strdup( domain );
 171
 172                                 p = strchr( val.bv_val, '.' );
 173
 174                                 if( p == val.bv_val ) {
 175                                         val.bv_val[1] = '\0';
 176                                 } else if ( p != NULL ) {
 177                                         *p = '\0';
 178                                 }
 179
 180                                 val.bv_len = strlen(val.bv_val);
 181                                 attr_merge( e, ad, vals );
 182                         }
 183                 }
 184
 185                 {
 186                         AttributeDescription *ad = NULL;
 187                         const char *text;
 188
 189                         rc = slap_str2ad( "associatedDomain", &ad, &text );
 190
 191                         if( rc == LDAP_SUCCESS ) {
 192                                 val.bv_val = domain;
 193                                 val.bv_len = strlen(domain);
 194                                 attr_merge( e, ad, vals );
 195                         }
 196                 }
 197
 198                 attr_merge( e, ad_ref, urls );
 199
 200                 rc = test_filter( be, conn, op, e, filter );
 201
 202                 if( rc == LDAP_COMPARE_TRUE ) {
 203                         send_search_entry( be, conn, op,
 204                                 e, attrs, attrsonly, NULL );
 205                 }
 206
 207                 entry_free( e );
 208
 209                 send_ldap_result( conn, op, LDAP_SUCCESS,
 210                         NULL, NULL, NULL, NULL );
 211         }
 212
 213         free( refdn );
 214         free( nrefdn );
 215
 216 done:
 217         if( domain != NULL ) ch_free( domain );
 218         if( hostlist != NULL ) ch_free( hostlist );
 219         if( hosts != NULL ) charray_free( hosts );
 220         if( urls != NULL ) ber_bvecfree( urls );
 221         return 0;
 222 }