external/bsd/openldap/dist/servers/slapd/back-passwd/search.c

   1 /* search.c - /etc/passwd backend search function */
   2 /* $OpenLDAP: pkg/ldap/servers/slapd/back-passwd/search.c,v 1.79.2.3 2008/02/11 23:26:47 kurt Exp $ */
   3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   4  *
   5  * Copyright 1998-2008 The OpenLDAP Foundation.
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted only as authorized by the OpenLDAP
  10  * Public License.
  11  *
  12  * A copy of this license is available in the file LICENSE in the
  13  * top-level directory of the distribution or, alternatively, at
  14  * <http://www.OpenLDAP.org/license.html>.
  15  */
  16 /* Portions Copyright (c) 1995 Regents of the University of Michigan.
  17  * All rights reserved.
  18  *
  19  * Redistribution and use in source and binary forms are permitted
  20  * provided that this notice is preserved and that due credit is given
  21  * to the University of Michigan at Ann Arbor. The name of the University
  22  * may not be used to endorse or promote products derived from this
  23  * software without specific prior written permission. This software
  24  * is provided ``as is'' without express or implied warranty.
  25  */
  26 /* ACKNOWLEDGEMENTS:
  27  * This work was originally developed by the University of Michigan
  28  * (as part of U-MICH LDAP).  Additional significant contributors
  29  * include:
  30  *     Hallvard B. Furuseth
  31  *     Howard Chu
  32  *     Kurt D. Zeilenga
  33  */
  34
  35 #include "portable.h"
  36
  37 #include <stdio.h>
  38
  39 #include <ac/ctype.h>
  40 #include <ac/socket.h>
  41 #include <ac/string.h>
  42 #include <ac/time.h>
  43
  44 #include <pwd.h>
  45
  46 #include "slap.h"
  47 #include "back-passwd.h"
  48
  49 static void pw_start( Backend *be );
  50
  51 static int pw2entry(
  52         Backend         *be,
  53         struct passwd   *pw,
  54         Entry           *ep );
  55
  56 int
  57 passwd_back_search(
  58     Operation   *op,
  59     SlapReply   *rs )
  60 {
  61         struct passwd   *pw;
  62         time_t          stoptime = (time_t)-1;
  63
  64         LDAPRDN rdn = NULL;
  65         struct berval parent = BER_BVNULL;
  66
  67         AttributeDescription *ad_objectClass = slap_schema.si_ad_objectClass;
  68
  69         if ( op->ors_tlimit != SLAP_NO_LIMIT ) {
  70                 stoptime = op->o_time + op->ors_tlimit;
  71         }
  72
  73         /* Handle a query for the base of this backend */
  74         if ( be_issuffix( op->o_bd, &op->o_req_ndn ) ) {
  75                 struct berval   val;
  76
  77                 rs->sr_matched = op->o_req_dn.bv_val;
  78
  79                 if( op->ors_scope != LDAP_SCOPE_ONELEVEL ) {
  80                         AttributeDescription    *desc = NULL;
  81                         char                    *next;
  82                         Entry                   e = { 0 };
  83
  84                         /* Create an entry corresponding to the base DN */
  85                         e.e_name.bv_val = ch_strdup( op->o_req_dn.bv_val );
  86                         e.e_name.bv_len = op->o_req_dn.bv_len;
  87                         e.e_nname.bv_val =  ch_strdup( op->o_req_ndn.bv_val );
  88                         e.e_nname.bv_len = op->o_req_ndn.bv_len;
  89
  90                         /* Use the first attribute of the DN
  91                         * as an attribute within the entry itself.
  92                         */
  93                         if( ldap_bv2rdn( &op->o_req_dn, &rdn, &next,
  94                                 LDAP_DN_FORMAT_LDAP ) )
  95                         {
  96                                 rs->sr_err = LDAP_INVALID_DN_SYNTAX;
  97                                 goto done;
  98                         }
  99
 100                         if( slap_bv2ad( &rdn[0]->la_attr, &desc, &rs->sr_text )) {
 101                                 rs->sr_err = LDAP_NO_SUCH_OBJECT;
 102                                 ldap_rdnfree(rdn);
 103                                 goto done;
 104                         }
 105
 106                         attr_merge_normalize_one( &e, desc, &rdn[0]->la_value, NULL );
 107
 108                         ldap_rdnfree(rdn);
 109                         rdn = NULL;
 110
 111                         /* Every entry needs an objectclass. We don't really
 112                          * know if our hardcoded choice here agrees with the
 113                          * DN that was configured for this backend, but it's
 114                          * better than nothing.
 115                          *
 116                          * should be a configuratable item
 117                          */
 118                         BER_BVSTR( &val, "organizationalUnit" );
 119                         attr_merge_one( &e, ad_objectClass, &val, NULL );
 120
 121                         if ( test_filter( op, &e, op->ors_filter ) == LDAP_COMPARE_TRUE ) {
 122                                 rs->sr_entry = &e;
 123                                 rs->sr_attrs = op->ors_attrs;
 124                                 rs->sr_flags = REP_ENTRY_MODIFIABLE;
 125                                 send_search_entry( op, rs );
 126                         }
 127
 128                         entry_clean( &e );
 129                 }
 130
 131                 if ( op->ors_scope != LDAP_SCOPE_BASE ) {
 132                         /* check all our "children" */
 133
 134                         ldap_pvt_thread_mutex_lock( &passwd_mutex );
 135                         pw_start( op->o_bd );
 136                         for ( pw = getpwent(); pw != NULL; pw = getpwent() ) {
 137                                 Entry           e = { 0 };
 138
 139                                 /* check for abandon */
 140                                 if ( op->o_abandon ) {
 141                                         endpwent();
 142                                         ldap_pvt_thread_mutex_unlock( &passwd_mutex );
 143                                         return( SLAPD_ABANDON );
 144                                 }
 145
 146                                 /* check time limit */
 147                                 if ( op->ors_tlimit != SLAP_NO_LIMIT
 148                                                 && slap_get_time() > stoptime )
 149                                 {
 150                                         send_ldap_error( op, rs, LDAP_TIMELIMIT_EXCEEDED, NULL );
 151                                         endpwent();
 152                                         ldap_pvt_thread_mutex_unlock( &passwd_mutex );
 153                                         return( 0 );
 154                                 }
 155
 156                                 if ( pw2entry( op->o_bd, pw, &e ) ) {
 157                                         rs->sr_err = LDAP_OTHER;
 158                                         endpwent();
 159                                         ldap_pvt_thread_mutex_unlock( &passwd_mutex );
 160                                         goto done;
 161                                 }
 162
 163                                 if ( test_filter( op, &e, op->ors_filter ) == LDAP_COMPARE_TRUE ) {
 164                                         /* check size limit */
 165                                         if ( --op->ors_slimit == -1 ) {
 166                                                 send_ldap_error( op, rs, LDAP_SIZELIMIT_EXCEEDED, NULL );
 167                                                 endpwent();
 168                                                 ldap_pvt_thread_mutex_unlock( &passwd_mutex );
 169                                                 return( 0 );
 170                                         }
 171
 172                                         rs->sr_entry = &e;
 173                                         rs->sr_attrs = op->ors_attrs;
 174                                         rs->sr_flags = REP_ENTRY_MODIFIABLE;
 175                                         send_search_entry( op, rs );
 176                                 }
 177
 178                                 entry_clean( &e );
 179                         }
 180                         endpwent();
 181                         ldap_pvt_thread_mutex_unlock( &passwd_mutex );
 182                 }
 183
 184         } else {
 185                 char    *next;
 186                 Entry   e = { 0 };
 187                 int     rc;
 188
 189                 if (! be_issuffix( op->o_bd, &op->o_req_ndn ) ) {
 190                         dnParent( &op->o_req_ndn, &parent );
 191                 }
 192
 193                 /* This backend is only one layer deep. Don't answer requests for
 194                  * anything deeper than that.
 195                  */
 196                 if( !be_issuffix( op->o_bd, &parent ) ) {
 197                         int i;
 198                         for( i=0; op->o_bd->be_nsuffix[i].bv_val != NULL; i++ ) {
 199                                 if( dnIsSuffix( &op->o_req_ndn, &op->o_bd->be_nsuffix[i] ) ) {
 200                                         rs->sr_matched = op->o_bd->be_suffix[i].bv_val;
 201                                         break;
 202                                 }
 203                         }
 204                         rs->sr_err = LDAP_NO_SUCH_OBJECT;
 205                         goto done;
 206                 }
 207
 208                 if( op->ors_scope == LDAP_SCOPE_ONELEVEL ) {
 209                         goto done;
 210                 }
 211
 212                 if ( ldap_bv2rdn( &op->o_req_dn, &rdn, &next,
 213                         LDAP_DN_FORMAT_LDAP ))
 214                 {
 215                         rs->sr_err = LDAP_OTHER;
 216                         goto done;
 217                 }
 218
 219                 ldap_pvt_thread_mutex_lock( &passwd_mutex );
 220                 pw_start( op->o_bd );
 221                 pw = getpwnam( rdn[0]->la_value.bv_val );
 222                 if ( pw == NULL ) {
 223                         rs->sr_matched = parent.bv_val;
 224                         rs->sr_err = LDAP_NO_SUCH_OBJECT;
 225                         ldap_pvt_thread_mutex_unlock( &passwd_mutex );
 226                         goto done;
 227                 }
 228
 229                 rc = pw2entry( op->o_bd, pw, &e );
 230                 ldap_pvt_thread_mutex_unlock( &passwd_mutex );
 231                 if ( rc ) {
 232                         rs->sr_err = LDAP_OTHER;
 233                         goto done;
 234                 }
 235
 236                 if ( test_filter( op, &e, op->ors_filter ) == LDAP_COMPARE_TRUE ) {
 237                         rs->sr_entry = &e;
 238                         rs->sr_attrs = op->ors_attrs;
 239                         rs->sr_flags = REP_ENTRY_MODIFIABLE;
 240                         send_search_entry( op, rs );
 241                 }
 242
 243                 entry_clean( &e );
 244         }
 245
 246 done:
 247         if( rs->sr_err != LDAP_NO_SUCH_OBJECT ) rs->sr_matched = NULL;
 248         send_ldap_result( op, rs );
 249
 250         if( rdn != NULL ) ldap_rdnfree( rdn );
 251
 252         return( 0 );
 253 }
 254
 255 static void
 256 pw_start(
 257         Backend *be
 258 )
 259 {
 260         endpwent();
 261
 262 #ifdef HAVE_SETPWFILE
 263         if ( be->be_private != NULL ) {
 264                 (void) setpwfile( (char *) be->be_private );
 265         }
 266 #endif /* HAVE_SETPWFILE */
 267 }
 268
 269 static int
 270 pw2entry( Backend *be, struct passwd *pw, Entry *e )
 271 {
 272         size_t          pwlen;
 273         struct berval   val;
 274         struct berval   bv;
 275
 276         int             rc;
 277
 278         /*
 279          * from pw we get pw_name and make it cn
 280          * give it an objectclass of person.
 281          */
 282
 283         pwlen = strlen( pw->pw_name );
 284         val.bv_len = STRLENOF("uid=,") + ( pwlen + be->be_suffix[0].bv_len );
 285         val.bv_val = ch_malloc( val.bv_len + 1 );
 286
 287         /* rdn attribute type should be a configuratable item */
 288         sprintf( val.bv_val, "uid=%s,%s",
 289                 pw->pw_name, be->be_suffix[0].bv_val );
 290
 291         rc = dnNormalize( 0, NULL, NULL, &val, &bv, NULL );
 292         if( rc != LDAP_SUCCESS ) {
 293                 free( val.bv_val );
 294                 return( -1 );
 295         }
 296
 297         e->e_name = val;
 298         e->e_nname = bv;
 299
 300         e->e_attrs = NULL;
 301
 302         /* objectclasses should be configurable items */
 303         BER_BVSTR( &val, "person" );
 304         attr_merge_one( e, slap_schema.si_ad_objectClass, &val, NULL );
 305
 306         BER_BVSTR( &val, "uidObject" );
 307         attr_merge_one( e, slap_schema.si_ad_objectClass, &val, NULL );
 308
 309         val.bv_val = pw->pw_name;
 310         val.bv_len = pwlen;
 311         attr_merge_normalize_one( e, slap_schema.si_ad_uid, &val, NULL );       /* required by uidObject */
 312         attr_merge_normalize_one( e, slap_schema.si_ad_cn, &val, NULL );        /* required by person */
 313         attr_merge_normalize_one( e, ad_sn, &val, NULL );       /* required by person */
 314
 315 #ifdef HAVE_STRUCT_PASSWD_PW_GECOS
 316         /*
 317          * if gecos is present, add it as a cn. first process it
 318          * according to standard BSD usage. If the processed cn has
 319          * a space, use the tail as the surname.
 320          */
 321         if (pw->pw_gecos[0]) {
 322                 char *s;
 323
 324                 ber_str2bv( pw->pw_gecos, 0, 0, &val );
 325                 attr_merge_normalize_one( e, ad_desc, &val, NULL );
 326
 327                 s = ber_bvchr( &val, ',' );
 328                 if ( s ) *s = '\0';
 329
 330                 s = ber_bvchr( &val, '&' );
 331                 if ( s ) {
 332                         char buf[1024];
 333
 334                         if( val.bv_len + pwlen < sizeof(buf) ) {
 335                                 int i = s - val.bv_val;
 336                                 strncpy( buf, val.bv_val, i );
 337                                 s = buf + i;
 338                                 strcpy( s, pw->pw_name );
 339                                 *s = TOUPPER((unsigned char)*s);
 340                                 strcat( s, val.bv_val + i + 1 );
 341                                 val.bv_val = buf;
 342                         }
 343                 }
 344                 val.bv_len = strlen( val.bv_val );
 345
 346                 if ( val.bv_len && strcasecmp( val.bv_val, pw->pw_name ) ) {
 347                         attr_merge_normalize_one( e, slap_schema.si_ad_cn, &val, NULL );
 348                 }
 349
 350                 if ( ( s = strrchr(val.bv_val, ' ' ) ) ) {
 351                         ber_str2bv( s + 1, 0, 0, &val );
 352                         attr_merge_normalize_one( e, ad_sn, &val, NULL );
 353                 }
 354         }
 355 #endif /* HAVE_STRUCT_PASSWD_PW_GECOS */
 356
 357         return( 0 );
 358 }