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         const char **text);
  55
  56 int
  57 passwd_back_search(
  58     Operation   *op,
  59     SlapReply   *rs )
  60 {
  61         struct passwd   *pw;
  62         Entry           *e;
  63         char            *s;
  64         time_t          stoptime;
  65
  66         LDAPRDN rdn = NULL;
  67         struct berval parent = BER_BVNULL;
  68
  69         AttributeDescription *ad_objectClass = slap_schema.si_ad_objectClass;
  70
  71         if (op->ors_tlimit != SLAP_NO_LIMIT ) {
  72                 stoptime = op->o_time + op->ors_tlimit;
  73         }
  74
  75         /* Handle a query for the base of this backend */
  76         if ( be_issuffix( op->o_bd, &op->o_req_ndn ) ) {
  77                 struct berval   vals[2];
  78
  79                 vals[1].bv_val = NULL;
  80
  81                 rs->sr_matched = op->o_req_dn.bv_val;
  82
  83                 if( op->ors_scope != LDAP_SCOPE_ONELEVEL ) {
  84                         AttributeDescription *desc = NULL;
  85
  86                         /* Create an entry corresponding to the base DN */
  87                         e = (Entry *) ch_calloc(1, sizeof(Entry));
  88                         e->e_name.bv_val = ch_strdup( op->o_req_dn.bv_val );
  89                         e->e_name.bv_len = op->o_req_dn.bv_len;
  90                         e->e_nname.bv_val =  ch_strdup( op->o_req_ndn.bv_val );
  91                         e->e_nname.bv_len = op->o_req_ndn.bv_len;
  92                         e->e_attrs = NULL;
  93                         e->e_private = NULL;
  94
  95                         /* Use the first attribute of the DN
  96                         * as an attribute within the entry itself.
  97                         */
  98                         if( ldap_bv2rdn( &op->o_req_dn, &rdn, (char **)&rs->sr_text,
  99                                 LDAP_DN_FORMAT_LDAP ) )
 100                         {
 101                                 rs->sr_err = LDAP_INVALID_DN_SYNTAX;
 102                                 goto done;
 103                         }
 104
 105                         if( slap_bv2ad( &rdn[0]->la_attr, &desc, &rs->sr_text )) {
 106                                 rs->sr_err = LDAP_NO_SUCH_OBJECT;
 107                                 ldap_rdnfree(rdn);
 108                                 goto done;
 109                         }
 110
 111                         vals[0] = rdn[0]->la_value;
 112                         attr_mergeit( e, desc, vals );
 113
 114                         ldap_rdnfree(rdn);
 115                         rdn = NULL;
 116
 117                         /* Every entry needs an objectclass. We don't really
 118                          * know if our hardcoded choice here agrees with the
 119                          * DN that was configured for this backend, but it's
 120                          * better than nothing.
 121                          *
 122                          * should be a configuratable item
 123                          */
 124                         vals[0].bv_val = "organizationalUnit";
 125                         vals[0].bv_len = sizeof("organizationalUnit")-1;
 126                         attr_mergeit( e, ad_objectClass, vals );
 127
 128                         if ( test_filter( op, e, op->ors_filter ) == LDAP_COMPARE_TRUE ) {
 129                                 rs->sr_entry = e;
 130                                 rs->sr_attrs = op->ors_attrs;
 131                                 rs->sr_flags = REP_ENTRY_MODIFIABLE;
 132                                 send_search_entry( op, rs );
 133                         }
 134                 }
 135
 136                 if ( op->ors_scope != LDAP_SCOPE_BASE ) {
 137                         /* check all our "children" */
 138
 139                         ldap_pvt_thread_mutex_lock( &passwd_mutex );
 140                         pw_start( op->o_bd );
 141                         for ( pw = getpwent(); pw != NULL; pw = getpwent() ) {
 142                                 /* check for abandon */
 143                                 if ( op->o_abandon ) {
 144                                         endpwent();
 145                                         ldap_pvt_thread_mutex_unlock( &passwd_mutex );
 146                                         return( -1 );
 147                                 }
 148
 149                                 /* check time limit */
 150                                 if ( op->ors_tlimit != SLAP_NO_LIMIT
 151                                                 && slap_get_time() > stoptime )
 152                                 {
 153                                         send_ldap_error( op, rs, LDAP_TIMELIMIT_EXCEEDED, NULL );
 154                                         endpwent();
 155                                         ldap_pvt_thread_mutex_unlock( &passwd_mutex );
 156                                         return( 0 );
 157                                 }
 158
 159                                 if ( !(e = pw2entry( op->o_bd, pw, &rs->sr_text )) ) {
 160                                         rs->sr_err = LDAP_OTHER;
 161                                         endpwent();
 162                                         ldap_pvt_thread_mutex_unlock( &passwd_mutex );
 163                                         goto done;
 164                                 }
 165
 166                                 if ( test_filter( op, e, op->ors_filter ) == LDAP_COMPARE_TRUE ) {
 167                                         /* check size limit */
 168                                         if ( --op->ors_slimit == -1 ) {
 169                                                 send_ldap_error( op, rs, LDAP_SIZELIMIT_EXCEEDED, NULL );
 170                                                 endpwent();
 171                                                 ldap_pvt_thread_mutex_unlock( &passwd_mutex );
 172                                                 return( 0 );
 173                                         }
 174
 175                                         rs->sr_entry = e;
 176                                         rs->sr_attrs = op->ors_attrs;
 177                                         rs->sr_flags = REP_ENTRY_MODIFIABLE;
 178                                         send_search_entry( op, rs );
 179                                 }
 180
 181                                 entry_free( e );
 182                         }
 183                         endpwent();
 184                         ldap_pvt_thread_mutex_unlock( &passwd_mutex );
 185                 }
 186
 187         } else {
 188                 if (! be_issuffix( op->o_bd, &op->o_req_ndn ) ) {
 189                         dnParent( &op->o_req_ndn, &parent );
 190                 }
 191
 192                 /* This backend is only one layer deep. Don't answer requests for
 193                  * anything deeper than that.
 194                  */
 195                 if( !be_issuffix( op->o_bd, &parent ) ) {
 196                         int i;
 197                         for( i=0; op->o_bd->be_nsuffix[i].bv_val != NULL; i++ ) {
 198                                 if( dnIsSuffix( &op->o_req_ndn, &op->o_bd->be_nsuffix[i] ) ) {
 199                                         rs->sr_matched = op->o_bd->be_suffix[i].bv_val;
 200                                         break;
 201                                 }
 202                         }
 203                         rs->sr_err = LDAP_NO_SUCH_OBJECT;
 204                         goto done;
 205                 }
 206
 207                 if( op->ors_scope == LDAP_SCOPE_ONELEVEL ) {
 208                         goto done;
 209                 }
 210
 211                 if ( ldap_bv2rdn( &op->o_req_dn, &rdn, (char **)&rs->sr_text,
 212                         LDAP_DN_FORMAT_LDAP ))
 213                 {
 214                         rs->sr_err = LDAP_OTHER;
 215                         goto done;
 216                 }
 217
 218                 ldap_pvt_thread_mutex_lock( &passwd_mutex );
 219                 pw_start( op->o_bd );
 220                 if ( (pw = getpwnam( rdn[0]->la_value.bv_val )) == NULL ) {
 221                         rs->sr_matched = parent.bv_val;
 222                         rs->sr_err = LDAP_NO_SUCH_OBJECT;
 223                         ldap_pvt_thread_mutex_unlock( &passwd_mutex );
 224                         goto done;
 225                 }
 226
 227                 e = pw2entry( op->o_bd, pw, &rs->sr_text );
 228                 ldap_pvt_thread_mutex_unlock( &passwd_mutex );
 229                 if ( !e ) {
 230                         rs->sr_err = LDAP_OTHER;
 231                         goto done;
 232                 }
 233
 234                 if ( test_filter( op, e, op->ors_filter ) == LDAP_COMPARE_TRUE ) {
 235                         rs->sr_entry = e;
 236                         rs->sr_attrs = op->ors_attrs;
 237                         rs->sr_flags = REP_ENTRY_MODIFIABLE;
 238                         send_search_entry( op, rs );
 239                 }
 240
 241                 entry_free( e );
 242         }
 243
 244 done:
 245         if( rs->sr_err != LDAP_NO_SUCH_OBJECT ) rs->sr_matched = NULL;
 246         send_ldap_result( op, rs );
 247
 248         if( rdn != NULL ) ldap_rdnfree( rdn );
 249
 250         return( 0 );
 251 }
 252
 253 static void
 254 pw_start(
 255         Backend *be
 256 )
 257 {
 258         endpwent();
 259
 260 #ifdef HAVE_SETPWFILE
 261         if ( be->be_private != NULL ) {
 262                 (void) setpwfile( (char *) be->be_private );
 263         }
 264 #endif /* HAVE_SETPWFILE */
 265 }
 266
 267 static Entry *
 268 pw2entry( Backend *be, struct passwd *pw, const char **text )
 269 {
 270         size_t pwlen;
 271         Entry           *e;
 272         struct berval   vals[2];
 273         struct berval   bv;
 274
 275         int rc;
 276
 277         AttributeDescription *ad_objectClass = slap_schema.si_ad_objectClass;
 278         AttributeDescription *ad_cn = NULL;
 279         AttributeDescription *ad_sn = NULL;
 280         AttributeDescription *ad_uid = NULL;
 281         AttributeDescription *ad_description = NULL;
 282
 283         rc = slap_str2ad( "cn", &ad_cn, text );
 284         if(rc != LDAP_SUCCESS) return NULL;
 285         rc = slap_str2ad( "sn", &ad_sn, text );
 286         if(rc != LDAP_SUCCESS) return NULL;
 287         rc = slap_str2ad( "uid", &ad_uid, text );
 288         if(rc != LDAP_SUCCESS) return NULL;
 289         rc = slap_str2ad( "description", &ad_description, text );
 290         if(rc != LDAP_SUCCESS) return NULL;
 291
 292         /*
 293          * from pw we get pw_name and make it cn
 294          * give it an objectclass of person.
 295          */
 296
 297         pwlen = strlen( pw->pw_name );
 298         vals[0].bv_len = (sizeof("uid=,")-1) + ( pwlen + be->be_suffix[0].bv_len );
 299         vals[0].bv_val = ch_malloc( vals[0].bv_len + 1 );
 300
 301         /* rdn attribute type should be a configuratable item */
 302         sprintf( vals[0].bv_val, "uid=%s,%s",
 303                 pw->pw_name, be->be_suffix[0].bv_val );
 304
 305         rc = dnNormalize( 0, NULL, NULL, vals, &bv, NULL );
 306         if( rc != LDAP_SUCCESS ) {
 307                 free( vals[0].bv_val );
 308                 return NULL;
 309         }
 310
 311         e = (Entry *) ch_calloc( 1, sizeof(Entry) );
 312         e->e_name = vals[0];
 313         e->e_nname = bv;
 314
 315         e->e_attrs = NULL;
 316
 317         vals[1].bv_val = NULL;
 318
 319         /* objectclasses should be configurable items */
 320         vals[0].bv_val = "top";
 321         vals[0].bv_len = sizeof("top")-1;
 322         attr_mergeit( e, ad_objectClass, vals );
 323
 324         vals[0].bv_val = "person";
 325         vals[0].bv_len = sizeof("person")-1;
 326         attr_mergeit( e, ad_objectClass, vals );
 327
 328         vals[0].bv_val = "uidObject";
 329         vals[0].bv_len = sizeof("uidObject")-1;
 330         attr_mergeit( e, ad_objectClass, vals );
 331
 332         vals[0].bv_val = pw->pw_name;
 333         vals[0].bv_len = pwlen;
 334         attr_mergeit( e, ad_uid, vals );        /* required by uidObject */
 335         attr_mergeit( e, ad_cn, vals ); /* required by person */
 336         attr_mergeit( e, ad_sn, vals ); /* required by person */
 337
 338 #ifdef HAVE_PW_GECOS
 339         /*
 340          * if gecos is present, add it as a cn. first process it
 341          * according to standard BSD usage. If the processed cn has
 342          * a space, use the tail as the surname.
 343          */
 344         if (pw->pw_gecos[0]) {
 345                 char *s;
 346
 347                 vals[0].bv_val = pw->pw_gecos;
 348                 vals[0].bv_len = strlen(vals[0].bv_val);
 349                 attr_mergeit(e, ad_description, vals);
 350
 351                 s = strchr(vals[0].bv_val, ',');
 352                 if (s) *s = '\0';
 353
 354                 s = strchr(vals[0].bv_val, '&');
 355                 if (s) {
 356                         char buf[1024];
 357
 358                         if( vals[0].bv_len + pwlen < sizeof(buf) ) {
 359                                 int i = s - vals[0].bv_val;
 360                                 strncpy(buf, vals[0].bv_val, i);
 361                                 s = buf+i;
 362                                 strcpy(s, pw->pw_name);
 363                                 *s = TOUPPER((unsigned char)*s);
 364                                 strcat(s, vals[0].bv_val+i+1);
 365                                 vals[0].bv_val = buf;
 366                         }
 367                 }
 368                 vals[0].bv_len = strlen(vals[0].bv_val);
 369
 370                 if ( vals[0].bv_len && strcasecmp( vals[0].bv_val, pw->pw_name )) {
 371                         attr_mergeit( e, ad_cn, vals );
 372                 }
 373
 374                 if ( (s=strrchr(vals[0].bv_val, ' '))) {
 375                         vals[0].bv_val = s + 1;
 376                         vals[0].bv_len = strlen(vals[0].bv_val);
 377                         attr_mergeit(e, ad_sn, vals);
 378                 }
 379         }
 380 #endif
 381
 382         return( e );
 383 }