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 1998-2004 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 #include <ldap_pvt.h>
  49
  50 static void pw_start( Backend *be );
  51
  52 static Entry *pw2entry(
  53         Backend *be,
  54         struct passwd *pw,
  55         const char **text);
  56
  57 int
  58 passwd_back_search(
  59     Operation   *op,
  60     SlapReply   *rs )
  61 {
  62         struct passwd   *pw;
  63         Entry           *e;
  64         char            *s;
  65         time_t          stoptime;
  66
  67         LDAPRDN rdn = NULL;
  68         struct berval parent = { 0, NULL };
  69
  70         AttributeDescription *ad_objectClass = slap_schema.si_ad_objectClass;
  71
  72         op->ors_tlimit = (op->ors_tlimit > op->o_bd->be_timelimit || op->ors_tlimit < 1) ? op->o_bd->be_timelimit
  73             : op->ors_tlimit;
  74         stoptime = op->o_time + op->ors_tlimit;
  75         op->ors_slimit = (op->ors_slimit > op->o_bd->be_sizelimit || op->ors_slimit < 1) ? op->o_bd->be_sizelimit
  76             : op->ors_slimit;
  77
  78         /* Handle a query for the base of this backend */
  79         if ( be_issuffix( op->o_bd, &op->o_req_ndn ) ) {
  80                 struct berval   vals[2];
  81
  82                 vals[1].bv_val = NULL;
  83
  84                 rs->sr_matched = op->o_req_dn.bv_val;
  85
  86                 if( op->ors_scope != LDAP_SCOPE_ONELEVEL ) {
  87                         AttributeDescription *desc = NULL;
  88
  89                         /* Create an entry corresponding to the base DN */
  90                         e = (Entry *) ch_calloc(1, sizeof(Entry));
  91                         e->e_name.bv_val = ch_strdup( op->o_req_dn.bv_val );
  92                         e->e_name.bv_len = op->o_req_dn.bv_len;
  93                         e->e_nname.bv_val =  ch_strdup( op->o_req_ndn.bv_val );
  94                         e->e_nname.bv_len = op->o_req_ndn.bv_len;
  95                         e->e_attrs = NULL;
  96                         e->e_private = NULL;
  97
  98                         /* Use the first attribute of the DN
  99                         * as an attribute within the entry itself.
 100                         */
 101                         if( ldap_bv2rdn( &op->o_req_dn, &rdn, (char **)&rs->sr_text,
 102                                 LDAP_DN_FORMAT_LDAP ) )
 103                         {
 104                                 rs->sr_err = LDAP_INVALID_DN_SYNTAX;
 105                                 goto done;
 106                         }
 107
 108                         if( slap_bv2ad( &rdn[0]->la_attr, &desc, &rs->sr_text )) {
 109                                 rs->sr_err = LDAP_NO_SUCH_OBJECT;
 110                                 ldap_rdnfree(rdn);
 111                                 goto done;
 112                         }
 113
 114                         vals[0] = rdn[0]->la_value;
 115                         attr_mergeit( e, desc, vals );
 116
 117                         ldap_rdnfree(rdn);
 118                         rdn = NULL;
 119
 120                         /* Every entry needs an objectclass. We don't really
 121                          * know if our hardcoded choice here agrees with the
 122                          * DN that was configured for this backend, but it's
 123                          * better than nothing.
 124                          *
 125                          * should be a configuratable item
 126                          */
 127                         vals[0].bv_val = "organizationalUnit";
 128                         vals[0].bv_len = sizeof("organizationalUnit")-1;
 129                         attr_mergeit( e, ad_objectClass, vals );
 130
 131                         if ( test_filter( op, e, op->ors_filter ) == LDAP_COMPARE_TRUE ) {
 132                                 rs->sr_entry = e;
 133                                 rs->sr_attrs = op->ors_attrs;
 134                                 send_search_entry( op, rs );
 135                         }
 136                 }
 137
 138                 if ( op->ors_scope != LDAP_SCOPE_BASE ) {
 139                         /* check all our "children" */
 140
 141                         ldap_pvt_thread_mutex_lock( &passwd_mutex );
 142                         pw_start( op->o_bd );
 143                         for ( pw = getpwent(); pw != NULL; pw = getpwent() ) {
 144                                 /* check for abandon */
 145                                 if ( op->o_abandon ) {
 146                                         endpwent();
 147                                         ldap_pvt_thread_mutex_unlock( &passwd_mutex );
 148                                         return( -1 );
 149                                 }
 150
 151                                 /* check time limit */
 152                                 if ( slap_get_time() > stoptime ) {
 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                                         send_search_entry( op, rs );
 178                                 }
 179
 180                                 entry_free( e );
 181                         }
 182                         endpwent();
 183                         ldap_pvt_thread_mutex_unlock( &passwd_mutex );
 184                 }
 185
 186         } else {
 187                 if (! be_issuffix( op->o_bd, &op->o_req_ndn ) ) {
 188                         dnParent( &op->o_req_ndn, &parent );
 189                 }
 190
 191                 /* This backend is only one layer deep. Don't answer requests for
 192                  * anything deeper than that.
 193                  */
 194                 if( !be_issuffix( op->o_bd, &parent ) ) {
 195                         int i;
 196                         for( i=0; op->o_bd->be_nsuffix[i].bv_val != NULL; i++ ) {
 197                                 if( dnIsSuffix( &op->o_req_ndn, &op->o_bd->be_nsuffix[i] ) ) {
 198                                         rs->sr_matched = op->o_bd->be_suffix[i].bv_val;
 199                                         break;
 200                                 }
 201                         }
 202                         rs->sr_err = LDAP_NO_SUCH_OBJECT;
 203                         goto done;
 204                 }
 205
 206                 if( op->ors_scope == LDAP_SCOPE_ONELEVEL ) {
 207                         goto done;
 208                 }
 209
 210                 if ( ldap_bv2rdn( &op->o_req_dn, &rdn, (char **)&rs->sr_text,
 211                         LDAP_DN_FORMAT_LDAP ))
 212                 {
 213                         rs->sr_err = LDAP_OTHER;
 214                         goto done;
 215                 }
 216
 217                 ldap_pvt_thread_mutex_lock( &passwd_mutex );
 218                 pw_start( op->o_bd );
 219                 if ( (pw = getpwnam( rdn[0]->la_value.bv_val )) == NULL ) {
 220                         rs->sr_matched = parent.bv_val;
 221                         rs->sr_err = LDAP_NO_SUCH_OBJECT;
 222                         ldap_pvt_thread_mutex_unlock( &passwd_mutex );
 223                         goto done;
 224                 }
 225
 226                 e = pw2entry( op->o_bd, pw, &rs->sr_text );
 227                 ldap_pvt_thread_mutex_unlock( &passwd_mutex );
 228                 if ( !e ) {
 229                         rs->sr_err = LDAP_OTHER;
 230                         goto done;
 231                 }
 232
 233                 if ( test_filter( op, e, op->ors_filter ) == LDAP_COMPARE_TRUE ) {
 234                         rs->sr_entry = e;
 235                         rs->sr_attrs = op->ors_attrs;
 236                         send_search_entry( op, rs );
 237                 }
 238
 239                 entry_free( e );
 240         }
 241
 242 done:
 243         if( rs->sr_err != LDAP_NO_SUCH_OBJECT ) rs->sr_matched = NULL;
 244         send_ldap_result( op, rs );
 245
 246         if( rdn != NULL ) ldap_rdnfree( rdn );
 247
 248         return( 0 );
 249 }
 250
 251 static void
 252 pw_start(
 253         Backend *be
 254 )
 255 {
 256         endpwent();
 257
 258 #ifdef HAVE_SETPWFILE
 259         if ( be->be_private != NULL ) {
 260                 (void) setpwfile( (char *) be->be_private );
 261         }
 262 #endif /* HAVE_SETPWFILE */
 263 }
 264
 265 static Entry *
 266 pw2entry( Backend *be, struct passwd *pw, const char **text )
 267 {
 268         size_t pwlen;
 269         Entry           *e;
 270         struct berval   vals[2];
 271         struct berval   bv;
 272
 273         int rc;
 274
 275         AttributeDescription *ad_objectClass = slap_schema.si_ad_objectClass;
 276         AttributeDescription *ad_cn = NULL;
 277         AttributeDescription *ad_sn = NULL;
 278         AttributeDescription *ad_uid = NULL;
 279         AttributeDescription *ad_description = NULL;
 280
 281         rc = slap_str2ad( "cn", &ad_cn, text );
 282         if(rc != LDAP_SUCCESS) return NULL;
 283         rc = slap_str2ad( "sn", &ad_sn, text );
 284         if(rc != LDAP_SUCCESS) return NULL;
 285         rc = slap_str2ad( "uid", &ad_uid, text );
 286         if(rc != LDAP_SUCCESS) return NULL;
 287         rc = slap_str2ad( "description", &ad_description, text );
 288         if(rc != LDAP_SUCCESS) return NULL;
 289
 290         /*
 291          * from pw we get pw_name and make it cn
 292          * give it an objectclass of person.
 293          */
 294
 295         pwlen = strlen( pw->pw_name );
 296         vals[0].bv_len = (sizeof("uid=,")-1) + ( pwlen + be->be_suffix[0].bv_len );
 297         vals[0].bv_val = ch_malloc( vals[0].bv_len + 1 );
 298
 299         /* rdn attribute type should be a configuratable item */
 300         sprintf( vals[0].bv_val, "uid=%s,%s",
 301                 pw->pw_name, be->be_suffix[0].bv_val );
 302
 303         rc = dnNormalize( 0, NULL, NULL, vals, &bv, NULL );
 304         if( rc != LDAP_SUCCESS ) {
 305                 free( vals[0].bv_val );
 306                 return NULL;
 307         }
 308
 309         e = (Entry *) ch_calloc( 1, sizeof(Entry) );
 310         e->e_name = vals[0];
 311         e->e_nname = bv;
 312
 313         e->e_attrs = NULL;
 314
 315         vals[1].bv_val = NULL;
 316
 317         /* objectclasses should be configurable items */
 318         vals[0].bv_val = "top";
 319         vals[0].bv_len = sizeof("top")-1;
 320         attr_mergeit( e, ad_objectClass, vals );
 321
 322         vals[0].bv_val = "person";
 323         vals[0].bv_len = sizeof("person")-1;
 324         attr_mergeit( e, ad_objectClass, vals );
 325
 326         vals[0].bv_val = "uidObject";
 327         vals[0].bv_len = sizeof("uidObject")-1;
 328         attr_mergeit( e, ad_objectClass, vals );
 329
 330         vals[0].bv_val = pw->pw_name;
 331         vals[0].bv_len = pwlen;
 332         attr_mergeit( e, ad_uid, vals );        /* required by uidObject */
 333         attr_mergeit( e, ad_cn, vals ); /* required by person */
 334         attr_mergeit( e, ad_sn, vals ); /* required by person */
 335
 336 #ifdef HAVE_PW_GECOS
 337         /*
 338          * if gecos is present, add it as a cn. first process it
 339          * according to standard BSD usage. If the processed cn has
 340          * a space, use the tail as the surname.
 341          */
 342         if (pw->pw_gecos[0]) {
 343                 char *s;
 344
 345                 vals[0].bv_val = pw->pw_gecos;
 346                 vals[0].bv_len = strlen(vals[0].bv_val);
 347                 attr_mergeit(e, ad_description, vals);
 348
 349                 s = strchr(vals[0].bv_val, ',');
 350                 if (s) *s = '\0';
 351
 352                 s = strchr(vals[0].bv_val, '&');
 353                 if (s) {
 354                         char buf[1024];
 355
 356                         if( vals[0].bv_len + pwlen < sizeof(buf) ) {
 357                                 int i = s - vals[0].bv_val;
 358                                 strncpy(buf, vals[0].bv_val, i);
 359                                 s = buf+i;
 360                                 strcpy(s, pw->pw_name);
 361                                 *s = TOUPPER((unsigned char)*s);
 362                                 strcat(s, vals[0].bv_val+i+1);
 363                                 vals[0].bv_val = buf;
 364                         }
 365                 }
 366                 vals[0].bv_len = strlen(vals[0].bv_val);
 367
 368                 if ( vals[0].bv_len && strcasecmp( vals[0].bv_val, pw->pw_name )) {
 369                         attr_mergeit( e, ad_cn, vals );
 370                 }
 371
 372                 if ( (s=strrchr(vals[0].bv_val, ' '))) {
 373                         vals[0].bv_val = s + 1;
 374                         vals[0].bv_len = strlen(vals[0].bv_val);
 375                         attr_mergeit(e, ad_sn, vals);
 376                 }
 377         }
 378 #endif
 379
 380         return( e );
 381 }