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

   1 /* search.c - /etc/passwd backend search function */
   2 /* $OpenLDAP$ */
   3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   4  *
   5  * Copyright 1998-2005 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 Entry *pw2entry(
  52         Backend *be,
  53         struct passwd *pw );
  54
  55 int
  56 passwd_back_search(
  57     Operation   *op,
  58     SlapReply   *rs )
  59 {
  60         struct passwd   *pw;
  61         Entry           *e;
  62         time_t          stoptime;
  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
  83                         /* Create an entry corresponding to the base DN */
  84                         e = (Entry *) ch_calloc(1, sizeof(Entry));
  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                         e->e_attrs = NULL;
  90                         e->e_private = NULL;
  91
  92                         /* Use the first attribute of the DN
  93                         * as an attribute within the entry itself.
  94                         */
  95                         if( ldap_bv2rdn( &op->o_req_dn, &rdn, &next,
  96                                 LDAP_DN_FORMAT_LDAP ) )
  97                         {
  98                                 rs->sr_err = LDAP_INVALID_DN_SYNTAX;
  99                                 goto done;
 100                         }
 101
 102                         if( slap_bv2ad( &rdn[0]->la_attr, &desc, &rs->sr_text )) {
 103                                 rs->sr_err = LDAP_NO_SUCH_OBJECT;
 104                                 ldap_rdnfree(rdn);
 105                                 goto done;
 106                         }
 107
 108                         attr_mergeit_one( e, desc, &rdn[0]->la_value );
 109
 110                         ldap_rdnfree(rdn);
 111                         rdn = NULL;
 112
 113                         /* Every entry needs an objectclass. We don't really
 114                          * know if our hardcoded choice here agrees with the
 115                          * DN that was configured for this backend, but it's
 116                          * better than nothing.
 117                          *
 118                          * should be a configuratable item
 119                          */
 120                         BER_BVSTR( &val, "organizationalUnit" );
 121                         attr_mergeit_one( e, ad_objectClass, &val );
 122
 123                         if ( test_filter( op, e, op->ors_filter ) == LDAP_COMPARE_TRUE ) {
 124                                 rs->sr_entry = e;
 125                                 rs->sr_attrs = op->ors_attrs;
 126                                 rs->sr_flags = REP_ENTRY_MODIFIABLE;
 127                                 send_search_entry( op, rs );
 128                         }
 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                                 /* check for abandon */
 138                                 if ( op->o_abandon ) {
 139                                         endpwent();
 140                                         ldap_pvt_thread_mutex_unlock( &passwd_mutex );
 141                                         return( SLAPD_ABANDON );
 142                                 }
 143
 144                                 /* check time limit */
 145                                 if ( op->ors_tlimit != SLAP_NO_LIMIT
 146                                                 && slap_get_time() > stoptime )
 147                                 {
 148                                         send_ldap_error( op, rs, LDAP_TIMELIMIT_EXCEEDED, NULL );
 149                                         endpwent();
 150                                         ldap_pvt_thread_mutex_unlock( &passwd_mutex );
 151                                         return( 0 );
 152                                 }
 153
 154                                 if ( !( e = pw2entry( op->o_bd, pw ) ) ) {
 155                                         rs->sr_err = LDAP_OTHER;
 156                                         endpwent();
 157                                         ldap_pvt_thread_mutex_unlock( &passwd_mutex );
 158                                         goto done;
 159                                 }
 160
 161                                 if ( test_filter( op, e, op->ors_filter ) == LDAP_COMPARE_TRUE ) {
 162                                         /* check size limit */
 163                                         if ( --op->ors_slimit == -1 ) {
 164                                                 send_ldap_error( op, rs, LDAP_SIZELIMIT_EXCEEDED, NULL );
 165                                                 endpwent();
 166                                                 ldap_pvt_thread_mutex_unlock( &passwd_mutex );
 167                                                 return( 0 );
 168                                         }
 169
 170                                         rs->sr_entry = e;
 171                                         rs->sr_attrs = op->ors_attrs;
 172                                         rs->sr_flags = REP_ENTRY_MODIFIABLE;
 173                                         send_search_entry( op, rs );
 174                                 }
 175
 176                                 entry_free( e );
 177                         }
 178                         endpwent();
 179                         ldap_pvt_thread_mutex_unlock( &passwd_mutex );
 180                 }
 181
 182         } else {
 183                 char    *next;
 184                 if (! be_issuffix( op->o_bd, &op->o_req_ndn ) ) {
 185                         dnParent( &op->o_req_ndn, &parent );
 186                 }
 187
 188                 /* This backend is only one layer deep. Don't answer requests for
 189                  * anything deeper than that.
 190                  */
 191                 if( !be_issuffix( op->o_bd, &parent ) ) {
 192                         int i;
 193                         for( i=0; op->o_bd->be_nsuffix[i].bv_val != NULL; i++ ) {
 194                                 if( dnIsSuffix( &op->o_req_ndn, &op->o_bd->be_nsuffix[i] ) ) {
 195                                         rs->sr_matched = op->o_bd->be_suffix[i].bv_val;
 196                                         break;
 197                                 }
 198                         }
 199                         rs->sr_err = LDAP_NO_SUCH_OBJECT;
 200                         goto done;
 201                 }
 202
 203                 if( op->ors_scope == LDAP_SCOPE_ONELEVEL ) {
 204                         goto done;
 205                 }
 206
 207                 if ( ldap_bv2rdn( &op->o_req_dn, &rdn, &next,
 208                         LDAP_DN_FORMAT_LDAP ))
 209                 {
 210                         rs->sr_err = LDAP_OTHER;
 211                         goto done;
 212                 }
 213
 214                 ldap_pvt_thread_mutex_lock( &passwd_mutex );
 215                 pw_start( op->o_bd );
 216                 if ( (pw = getpwnam( rdn[0]->la_value.bv_val )) == NULL ) {
 217                         rs->sr_matched = parent.bv_val;
 218                         rs->sr_err = LDAP_NO_SUCH_OBJECT;
 219                         ldap_pvt_thread_mutex_unlock( &passwd_mutex );
 220                         goto done;
 221                 }
 222
 223                 e = pw2entry( op->o_bd, pw );
 224                 ldap_pvt_thread_mutex_unlock( &passwd_mutex );
 225                 if ( !e ) {
 226                         rs->sr_err = LDAP_OTHER;
 227                         goto done;
 228                 }
 229
 230                 if ( test_filter( op, e, op->ors_filter ) == LDAP_COMPARE_TRUE ) {
 231                         rs->sr_entry = e;
 232                         rs->sr_attrs = op->ors_attrs;
 233                         rs->sr_flags = REP_ENTRY_MODIFIABLE;
 234                         send_search_entry( op, rs );
 235                 }
 236
 237                 entry_free( e );
 238         }
 239
 240 done:
 241         if( rs->sr_err != LDAP_NO_SUCH_OBJECT ) rs->sr_matched = NULL;
 242         send_ldap_result( op, rs );
 243
 244         if( rdn != NULL ) ldap_rdnfree( rdn );
 245
 246         return( 0 );
 247 }
 248
 249 static void
 250 pw_start(
 251         Backend *be
 252 )
 253 {
 254         endpwent();
 255
 256 #ifdef HAVE_SETPWFILE
 257         if ( be->be_private != NULL ) {
 258                 (void) setpwfile( (char *) be->be_private );
 259         }
 260 #endif /* HAVE_SETPWFILE */
 261 }
 262
 263 static Entry *
 264 pw2entry( Backend *be, struct passwd *pw )
 265 {
 266         size_t          pwlen;
 267         Entry           *e;
 268         struct berval   val;
 269         struct berval   bv;
 270
 271         int             rc;
 272
 273         /*
 274          * from pw we get pw_name and make it cn
 275          * give it an objectclass of person.
 276          */
 277
 278         pwlen = strlen( pw->pw_name );
 279         val.bv_len = STRLENOF("uid=,") + ( pwlen + be->be_suffix[0].bv_len );
 280         val.bv_val = ch_malloc( val.bv_len + 1 );
 281
 282         /* rdn attribute type should be a configuratable item */
 283         sprintf( val.bv_val, "uid=%s,%s",
 284                 pw->pw_name, be->be_suffix[0].bv_val );
 285
 286         rc = dnNormalize( 0, NULL, NULL, &val, &bv, NULL );
 287         if( rc != LDAP_SUCCESS ) {
 288                 free( val.bv_val );
 289                 return NULL;
 290         }
 291
 292         e = (Entry *) ch_calloc( 1, sizeof(Entry) );
 293         e->e_name = val;
 294         e->e_nname = bv;
 295
 296         e->e_attrs = NULL;
 297
 298         /* objectclasses should be configurable items */
 299 #if 0
 300         /* "top" is redundant */
 301         BER_BVSTR( &val, "top" );
 302         attr_mergeit_one( e, ad_objectClass, &val );
 303 #endif
 304
 305         BER_BVSTR( &val, "person" );
 306         attr_mergeit_one( e, slap_schema.si_ad_objectClass, &val );
 307
 308         BER_BVSTR( &val, "uidObject" );
 309         attr_mergeit_one( e, slap_schema.si_ad_objectClass, &val );
 310
 311         val.bv_val = pw->pw_name;
 312         val.bv_len = pwlen;
 313         attr_mergeit_one( e, slap_schema.si_ad_uid, &val );     /* required by uidObject */
 314         attr_mergeit_one( e, slap_schema.si_ad_cn, &val );      /* required by person */
 315         attr_mergeit_one( e, ad_sn, &val );     /* required by person */
 316
 317 #ifdef HAVE_PW_GECOS
 318         /*
 319          * if gecos is present, add it as a cn. first process it
 320          * according to standard BSD usage. If the processed cn has
 321          * a space, use the tail as the surname.
 322          */
 323         if (pw->pw_gecos[0]) {
 324                 char *s;
 325
 326                 ber_str2bv( pw->pw_gecos, 0, 0, &val );
 327                 attr_mergeit_one( e, ad_desc, &val );
 328
 329                 s = strchr( val.bv_val, ',' );
 330                 if ( s ) *s = '\0';
 331
 332                 s = strchr( val.bv_val, '&' );
 333                 if ( s ) {
 334                         char buf[1024];
 335
 336                         if( val.bv_len + pwlen < sizeof(buf) ) {
 337                                 int i = s - val.bv_val;
 338                                 strncpy( buf, val.bv_val, i );
 339                                 s = buf + i;
 340                                 strcpy( s, pw->pw_name );
 341                                 *s = TOUPPER((unsigned char)*s);
 342                                 strcat( s, val.bv_val + i + 1 );
 343                                 val.bv_val = buf;
 344                         }
 345                 }
 346                 val.bv_len = strlen( val.bv_val );
 347
 348                 if ( val.bv_len && strcasecmp( val.bv_val, pw->pw_name ) ) {
 349                         attr_mergeit_one( e, slap_schema.si_ad_cn, &val );
 350                 }
 351
 352                 if ( ( s = strrchr(val.bv_val, ' ' ) ) ) {
 353                         ber_str2bv( s + 1, 0, 0, &val );
 354                         attr_mergeit_one( e, ad_sn, &val );
 355                 }
 356         }
 357 #endif
 358
 359         return( e );
 360 }