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

   1 /* search.c - /etc/passwd backend search function */
   2 /* $OpenLDAP$ */
   3
   4 #include "portable.h"
   5
   6 #include <stdio.h>
   7
   8 #include <ac/ctype.h>
   9 #include <ac/socket.h>
  10 #include <ac/string.h>
  11 #include <ac/time.h>
  12
  13 #include <pwd.h>
  14
  15 #include "slap.h"
  16 #include "external.h"
  17 #include <ldap_pvt.h>
  18
  19 static Entry *pw2entry(
  20         Backend *be,
  21         struct passwd *pw,
  22         const char **text);
  23
  24 int
  25 passwd_back_search(
  26     Backend     *be,
  27     Connection  *conn,
  28     Operation   *op,
  29     struct berval *base,
  30     struct berval *nbase,
  31     int         scope,
  32     int         deref,
  33     int         slimit,
  34     int         tlimit,
  35     Filter      *filter,
  36     struct berval       *filterstr,
  37     AttributeName       *attrs,
  38     int         attrsonly
  39 )
  40 {
  41         struct passwd   *pw;
  42         Entry           *e;
  43         char            *s;
  44         time_t          stoptime;
  45
  46         int sent = 0;
  47         int err = LDAP_SUCCESS;
  48
  49         LDAPRDN *rdn = NULL;
  50         char *parent = NULL;
  51         char *matched = NULL;
  52         const char *text = NULL;
  53
  54         AttributeDescription *ad_objectClass = slap_schema.si_ad_objectClass;
  55
  56         tlimit = (tlimit > be->be_timelimit || tlimit < 1) ? be->be_timelimit
  57             : tlimit;
  58         stoptime = op->o_time + tlimit;
  59         slimit = (slimit > be->be_sizelimit || slimit < 1) ? be->be_sizelimit
  60             : slimit;
  61
  62         endpwent();
  63
  64 #ifdef HAVE_SETPWFILE
  65         if ( be->be_private != NULL ) {
  66                 (void) setpwfile( (char *) be->be_private );
  67         }
  68 #endif /* HAVE_SETPWFILE */
  69
  70         /* Handle a query for the base of this backend */
  71         if ( be_issuffix( be,  nbase->bv_val ) ) {
  72                 struct berval   vals[2];
  73
  74                 vals[1].bv_val = NULL;
  75
  76                 matched = (char *) base;
  77
  78                 if( scope != LDAP_SCOPE_ONELEVEL ) {
  79                         AttributeDescription *desc = NULL;
  80
  81                         /* Create an entry corresponding to the base DN */
  82                         e = (Entry *) ch_calloc(1, sizeof(Entry));
  83                         e->e_name.bv_val = ch_strdup( base->bv_val );
  84                         e->e_name.bv_len = base->bv_len;
  85                         e->e_nname.bv_val =  ch_strdup( nbase->bv_val );
  86                         e->e_nname.bv_len = nbase->bv_len;
  87                         e->e_attrs = NULL;
  88                         e->e_private = NULL;
  89
  90                         /* Use the first attribute of the DN
  91                         * as an attribute within the entry itself.
  92                         */
  93                         if( ldap_str2rdn( base->bv_val, &rdn, (char **)&text,
  94                                 LDAP_DN_FORMAT_LDAP ) )
  95                         {
  96                                 err = LDAP_INVALID_DN_SYNTAX;
  97                                 goto done;
  98                         }
  99
 100                         if( slap_bv2ad( &rdn[0][0]->la_attr, &desc, &text )) {
 101                                 err = LDAP_NO_SUCH_OBJECT;
 102                                 ldap_rdnfree(rdn);
 103                                 goto done;
 104                         }
 105
 106                         vals[0] = rdn[0][0]->la_value;
 107                         attr_merge( e, desc, vals );
 108
 109                         ldap_rdnfree(rdn);
 110                         rdn = NULL;
 111
 112                         /* Every entry needs an objectclass. We don't really
 113                          * know if our hardcoded choice here agrees with the
 114                          * DN that was configured for this backend, but it's
 115                          * better than nothing.
 116                          *
 117                          * should be a configuratable item
 118                          */
 119                         vals[0].bv_val = "organizationalUnit";
 120                         vals[0].bv_len = sizeof("organizationalUnit")-1;
 121                         attr_merge( e, ad_objectClass, vals );
 122
 123                         if ( test_filter( be, conn, op, e, filter ) == LDAP_COMPARE_TRUE ) {
 124                                 send_search_entry( be, conn, op,
 125                                         e, attrs, attrsonly, NULL );
 126                                 sent++;
 127                         }
 128                 }
 129
 130                 if ( scope != LDAP_SCOPE_BASE ) {
 131                         /* check all our "children" */
 132
 133                         for ( pw = getpwent(); pw != NULL; pw = getpwent() ) {
 134                                 /* check for abandon */
 135                                 ldap_pvt_thread_mutex_lock( &op->o_abandonmutex );
 136                                 if ( op->o_abandon ) {
 137                                         ldap_pvt_thread_mutex_unlock( &op->o_abandonmutex );
 138                                         endpwent();
 139                                         return( -1 );
 140                                 }
 141                                 ldap_pvt_thread_mutex_unlock( &op->o_abandonmutex );
 142
 143                                 /* check time limit */
 144                                 if ( slap_get_time() > stoptime ) {
 145                                         send_ldap_result( conn, op, LDAP_TIMELIMIT_EXCEEDED,
 146                                         NULL, NULL, NULL, NULL );
 147                                         endpwent();
 148                                         return( 0 );
 149                                 }
 150
 151                                 if ( !(e = pw2entry( be, pw, &text )) ) {
 152                                         err = LDAP_OPERATIONS_ERROR;
 153                                         endpwent();
 154                                         goto done;
 155                                 }
 156
 157                                 if ( test_filter( be, conn, op, e, filter ) == LDAP_COMPARE_TRUE ) {
 158                                         /* check size limit */
 159                                         if ( --slimit == -1 ) {
 160                                                 send_ldap_result( conn, op, LDAP_SIZELIMIT_EXCEEDED,
 161                                                 NULL, NULL, NULL, NULL );
 162                                                 endpwent();
 163                                                 return( 0 );
 164                                         }
 165
 166                                         send_search_entry( be, conn, op,
 167                                                 e, attrs, attrsonly, NULL );
 168                                         sent++;
 169                                 }
 170
 171                                 entry_free( e );
 172                         }
 173                         endpwent();
 174                 }
 175
 176         } else {
 177                 parent = dn_parent( be, nbase->bv_val );
 178
 179                 /* This backend is only one layer deep. Don't answer requests for
 180                  * anything deeper than that.
 181                  */
 182                 if( !be_issuffix( be, parent ) ) {
 183                         int i;
 184                         for( i=0; be->be_nsuffix[i] != NULL; i++ ) {
 185                                 if( dnIsSuffix( nbase, be->be_nsuffix[i] ) ) {
 186                                         matched = be->be_suffix[i]->bv_val;
 187                                         break;
 188                                 }
 189                         }
 190                         err = LDAP_NO_SUCH_OBJECT;
 191                         goto done;
 192                 }
 193
 194                 if( scope == LDAP_SCOPE_ONELEVEL ) {
 195                         goto done;
 196                 }
 197
 198                 if ( ldap_str2rdn( base->bv_val, &rdn, (char **)&text,
 199                         LDAP_DN_FORMAT_LDAP ))
 200                 {
 201                         err = LDAP_OPERATIONS_ERROR;
 202                         goto done;
 203                 }
 204
 205                 if ( (pw = getpwnam( rdn[0][0]->la_value.bv_val )) == NULL ) {
 206                         matched = parent;
 207                         err = LDAP_NO_SUCH_OBJECT;
 208                         goto done;
 209                 }
 210
 211                 if ( !(e = pw2entry( be, pw, &text )) ) {
 212                         err = LDAP_OPERATIONS_ERROR;
 213                         goto done;
 214                 }
 215
 216                 if ( test_filter( be, conn, op, e, filter ) == LDAP_COMPARE_TRUE ) {
 217                         send_search_entry( be, conn, op,
 218                                 e, attrs, attrsonly, NULL );
 219                         sent++;
 220                 }
 221
 222                 entry_free( e );
 223         }
 224
 225 done:
 226         send_ldap_result( conn, op,
 227                 err, err == LDAP_NO_SUCH_OBJECT ? matched : NULL, text,
 228                 NULL, NULL );
 229
 230         if( rdn != NULL ) ldap_rdnfree( rdn );
 231
 232         return( 0 );
 233 }
 234
 235 static Entry *
 236 pw2entry( Backend *be, struct passwd *pw, const char **text )
 237 {
 238         size_t pwlen;
 239         Entry           *e;
 240         struct berval   vals[2];
 241         struct berval   bv;
 242
 243         int rc;
 244
 245         AttributeDescription *ad_objectClass = slap_schema.si_ad_objectClass;
 246         AttributeDescription *ad_cn = NULL;
 247         AttributeDescription *ad_sn = NULL;
 248         AttributeDescription *ad_uid = NULL;
 249         AttributeDescription *ad_description = NULL;
 250
 251         rc = slap_str2ad( "cn", &ad_cn, text );
 252         if(rc != LDAP_SUCCESS) return NULL;
 253         rc = slap_str2ad( "sn", &ad_sn, text );
 254         if(rc != LDAP_SUCCESS) return NULL;
 255         rc = slap_str2ad( "uid", &ad_uid, text );
 256         if(rc != LDAP_SUCCESS) return NULL;
 257         rc = slap_str2ad( "description", &ad_description, text );
 258         if(rc != LDAP_SUCCESS) return NULL;
 259
 260         /*
 261          * from pw we get pw_name and make it cn
 262          * give it an objectclass of person.
 263          */
 264
 265         pwlen = strlen( pw->pw_name );
 266         vals[0].bv_len = (sizeof("uid=,")-1) + ( pwlen + be->be_suffix[0]->bv_len );
 267         vals[0].bv_val = ch_malloc( vals[0].bv_len + 1 );
 268
 269         /* rdn attribute type should be a configuratable item */
 270         sprintf( vals[0].bv_val, "uid=%s,%s",
 271                 pw->pw_name, be->be_suffix[0]->bv_val );
 272
 273         rc = dnNormalize2( NULL, vals, &bv );
 274         if( rc != LDAP_SUCCESS ) {
 275                 free( vals[0].bv_val );
 276                 return NULL;
 277         }
 278
 279         e = (Entry *) ch_calloc( 1, sizeof(Entry) );
 280         e->e_name = vals[0];
 281         e->e_nname = bv;
 282
 283         e->e_attrs = NULL;
 284
 285         vals[1].bv_val = NULL;
 286
 287         /* objectclasses should be configurable items */
 288         vals[0].bv_val = "top";
 289         vals[0].bv_len = sizeof("top")-1;
 290         attr_merge( e, ad_objectClass, vals );
 291
 292         vals[0].bv_val = "person";
 293         vals[0].bv_len = sizeof("person")-1;
 294         attr_merge( e, ad_objectClass, vals );
 295
 296         vals[0].bv_val = "uidObject";
 297         vals[0].bv_len = sizeof("uidObject")-1;
 298         attr_merge( e, ad_objectClass, vals );
 299
 300         vals[0].bv_val = pw->pw_name;
 301         vals[0].bv_len = pwlen;
 302         attr_merge( e, ad_uid, vals );  /* required by uidObject */
 303         attr_merge( e, ad_cn, vals );   /* required by person */
 304         attr_merge( e, ad_sn, vals );   /* required by person */
 305
 306 #ifdef HAVE_PW_GECOS
 307         /*
 308          * if gecos is present, add it as a cn. first process it
 309          * according to standard BSD usage. If the processed cn has
 310          * a space, use the tail as the surname.
 311          */
 312         if (pw->pw_gecos[0]) {
 313                 char *s;
 314
 315                 vals[0].bv_val = pw->pw_gecos;
 316                 vals[0].bv_len = strlen(vals[0].bv_val);
 317                 attr_merge(e, ad_description, vals);
 318
 319                 s = strchr(vals[0].bv_val, ',');
 320                 if (s) *s = '\0';
 321
 322                 s = strchr(vals[0].bv_val, '&');
 323                 if (s) {
 324                         char buf[256];
 325                         int i = s - vals[0].bv_val;
 326                         strncpy(buf, vals[0].bv_val, i);
 327                         s = buf+i;
 328                         strcpy(s, pw->pw_name);
 329                         *s = TOUPPER(*s);
 330                         strcat(s, vals[0].bv_val+i+1);
 331                         vals[0].bv_val = buf;
 332                 }
 333                 vals[0].bv_len = strlen(vals[0].bv_val);
 334                 if ( strcmp( vals[0].bv_val, pw->pw_name ))
 335                         attr_merge( e, ad_cn, vals );
 336                 if ( (s=strrchr(vals[0].bv_val, ' '))) {
 337                         vals[0].bv_val = s + 1;
 338                         vals[0].bv_len = strlen(vals[0].bv_val);
 339                         attr_merge(e, ad_sn, vals);
 340                 }
 341         }
 342 #endif
 343
 344         return( e );
 345 }