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 "back-passwd.h"
  17 #include <ldap_pvt.h>
  18
  19 static void pw_start( Backend *be );
  20
  21 static Entry *pw2entry(
  22         Backend *be,
  23         struct passwd *pw,
  24         const char **text);
  25
  26 int
  27 passwd_back_search(
  28     Backend     *be,
  29     Connection  *conn,
  30     Operation   *op,
  31     struct berval *base,
  32     struct berval *nbase,
  33     int         scope,
  34     int         deref,
  35     int         slimit,
  36     int         tlimit,
  37     Filter      *filter,
  38     struct berval       *filterstr,
  39     AttributeName       *attrs,
  40     int         attrsonly
  41 )
  42 {
  43         struct passwd   *pw;
  44         Entry           *e;
  45         char            *s;
  46         time_t          stoptime;
  47
  48         int sent = 0;
  49         int err = LDAP_SUCCESS;
  50
  51         LDAPRDN *rdn = NULL;
  52         struct berval parent = { 0, NULL };
  53         char *matched = NULL;
  54         const char *text = NULL;
  55
  56         AttributeDescription *ad_objectClass = slap_schema.si_ad_objectClass;
  57
  58         tlimit = (tlimit > be->be_timelimit || tlimit < 1) ? be->be_timelimit
  59             : tlimit;
  60         stoptime = op->o_time + tlimit;
  61         slimit = (slimit > be->be_sizelimit || slimit < 1) ? be->be_sizelimit
  62             : slimit;
  63
  64         /* Handle a query for the base of this backend */
  65         if ( be_issuffix( be, nbase ) ) {
  66                 struct berval   vals[2];
  67
  68                 vals[1].bv_val = NULL;
  69
  70                 matched = (char *) base;
  71
  72                 if( scope != LDAP_SCOPE_ONELEVEL ) {
  73                         AttributeDescription *desc = NULL;
  74
  75                         /* Create an entry corresponding to the base DN */
  76                         e = (Entry *) ch_calloc(1, sizeof(Entry));
  77                         e->e_name.bv_val = ch_strdup( base->bv_val );
  78                         e->e_name.bv_len = base->bv_len;
  79                         e->e_nname.bv_val =  ch_strdup( nbase->bv_val );
  80                         e->e_nname.bv_len = nbase->bv_len;
  81                         e->e_attrs = NULL;
  82                         e->e_private = NULL;
  83
  84                         /* Use the first attribute of the DN
  85                         * as an attribute within the entry itself.
  86                         */
  87                         if( ldap_bv2rdn( base, &rdn, (char **)&text,
  88                                 LDAP_DN_FORMAT_LDAP ) )
  89                         {
  90                                 err = LDAP_INVALID_DN_SYNTAX;
  91                                 goto done;
  92                         }
  93
  94                         if( slap_bv2ad( &rdn[0][0]->la_attr, &desc, &text )) {
  95                                 err = LDAP_NO_SUCH_OBJECT;
  96                                 ldap_rdnfree(rdn);
  97                                 goto done;
  98                         }
  99
 100                         vals[0] = rdn[0][0]->la_value;
 101                         attr_merge( e, desc, vals );
 102
 103                         ldap_rdnfree(rdn);
 104                         rdn = NULL;
 105
 106                         /* Every entry needs an objectclass. We don't really
 107                          * know if our hardcoded choice here agrees with the
 108                          * DN that was configured for this backend, but it's
 109                          * better than nothing.
 110                          *
 111                          * should be a configuratable item
 112                          */
 113                         vals[0].bv_val = "organizationalUnit";
 114                         vals[0].bv_len = sizeof("organizationalUnit")-1;
 115                         attr_merge( e, ad_objectClass, vals );
 116
 117                         if ( test_filter( be, conn, op, e, filter ) == LDAP_COMPARE_TRUE ) {
 118                                 send_search_entry( be, conn, op,
 119                                         e, attrs, attrsonly, NULL );
 120                                 sent++;
 121                         }
 122                 }
 123
 124                 if ( scope != LDAP_SCOPE_BASE ) {
 125                         /* check all our "children" */
 126
 127                         ldap_pvt_thread_mutex_lock( &passwd_mutex );
 128                         pw_start( be );
 129                         for ( pw = getpwent(); pw != NULL; pw = getpwent() ) {
 130                                 /* check for abandon */
 131                                 if ( op->o_abandon ) {
 132                                         endpwent();
 133                                         ldap_pvt_thread_mutex_unlock( &passwd_mutex );
 134                                         return( -1 );
 135                                 }
 136
 137                                 /* check time limit */
 138                                 if ( slap_get_time() > stoptime ) {
 139                                         send_ldap_result( conn, op, LDAP_TIMELIMIT_EXCEEDED,
 140                                         NULL, NULL, NULL, NULL );
 141                                         endpwent();
 142                                         ldap_pvt_thread_mutex_unlock( &passwd_mutex );
 143                                         return( 0 );
 144                                 }
 145
 146                                 if ( !(e = pw2entry( be, pw, &text )) ) {
 147                                         err = LDAP_OTHER;
 148                                         endpwent();
 149                                         ldap_pvt_thread_mutex_unlock( &passwd_mutex );
 150                                         goto done;
 151                                 }
 152
 153                                 if ( test_filter( be, conn, op, e, filter ) == LDAP_COMPARE_TRUE ) {
 154                                         /* check size limit */
 155                                         if ( --slimit == -1 ) {
 156                                                 send_ldap_result( conn, op, LDAP_SIZELIMIT_EXCEEDED,
 157                                                 NULL, NULL, NULL, NULL );
 158                                                 endpwent();
 159                                                 ldap_pvt_thread_mutex_unlock( &passwd_mutex );
 160                                                 return( 0 );
 161                                         }
 162
 163                                         send_search_entry( be, conn, op,
 164                                                 e, attrs, attrsonly, NULL );
 165                                         sent++;
 166                                 }
 167
 168                                 entry_free( e );
 169                         }
 170                         endpwent();
 171                         ldap_pvt_thread_mutex_unlock( &passwd_mutex );
 172                 }
 173
 174         } else {
 175                 if (! be_issuffix( be, nbase ) ) {
 176                         dnParent( nbase, &parent );
 177                 }
 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].bv_val != 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_bv2rdn( base, &rdn, (char **)&text,
 199                         LDAP_DN_FORMAT_LDAP ))
 200                 {
 201                         err = LDAP_OTHER;
 202                         goto done;
 203                 }
 204
 205                 ldap_pvt_thread_mutex_lock( &passwd_mutex );
 206                 pw_start( be );
 207                 if ( (pw = getpwnam( rdn[0][0]->la_value.bv_val )) == NULL ) {
 208                         matched = parent.bv_val;
 209                         err = LDAP_NO_SUCH_OBJECT;
 210                         ldap_pvt_thread_mutex_unlock( &passwd_mutex );
 211                         goto done;
 212                 }
 213
 214                 e = pw2entry( be, pw, &text );
 215                 ldap_pvt_thread_mutex_unlock( &passwd_mutex );
 216                 if ( !e ) {
 217                         err = LDAP_OTHER;
 218                         goto done;
 219                 }
 220
 221                 if ( test_filter( be, conn, op, e, filter ) == LDAP_COMPARE_TRUE ) {
 222                         send_search_entry( be, conn, op,
 223                                 e, attrs, attrsonly, NULL );
 224                         sent++;
 225                 }
 226
 227                 entry_free( e );
 228         }
 229
 230 done:
 231         send_ldap_result( conn, op,
 232                 err, err == LDAP_NO_SUCH_OBJECT ? matched : NULL, text,
 233                 NULL, NULL );
 234
 235         if( rdn != NULL ) ldap_rdnfree( rdn );
 236
 237         return( 0 );
 238 }
 239
 240 static void
 241 pw_start(
 242         Backend *be
 243 )
 244 {
 245         endpwent();
 246
 247 #ifdef HAVE_SETPWFILE
 248         if ( be->be_private != NULL ) {
 249                 (void) setpwfile( (char *) be->be_private );
 250         }
 251 #endif /* HAVE_SETPWFILE */
 252 }
 253
 254 static Entry *
 255 pw2entry( Backend *be, struct passwd *pw, const char **text )
 256 {
 257         size_t pwlen;
 258         Entry           *e;
 259         struct berval   vals[2];
 260         struct berval   bv;
 261
 262         int rc;
 263
 264         AttributeDescription *ad_objectClass = slap_schema.si_ad_objectClass;
 265         AttributeDescription *ad_cn = NULL;
 266         AttributeDescription *ad_sn = NULL;
 267         AttributeDescription *ad_uid = NULL;
 268         AttributeDescription *ad_description = NULL;
 269
 270         rc = slap_str2ad( "cn", &ad_cn, text );
 271         if(rc != LDAP_SUCCESS) return NULL;
 272         rc = slap_str2ad( "sn", &ad_sn, text );
 273         if(rc != LDAP_SUCCESS) return NULL;
 274         rc = slap_str2ad( "uid", &ad_uid, text );
 275         if(rc != LDAP_SUCCESS) return NULL;
 276         rc = slap_str2ad( "description", &ad_description, text );
 277         if(rc != LDAP_SUCCESS) return NULL;
 278
 279         /*
 280          * from pw we get pw_name and make it cn
 281          * give it an objectclass of person.
 282          */
 283
 284         pwlen = strlen( pw->pw_name );
 285         vals[0].bv_len = (sizeof("uid=,")-1) + ( pwlen + be->be_suffix[0].bv_len );
 286         vals[0].bv_val = ch_malloc( vals[0].bv_len + 1 );
 287
 288         /* rdn attribute type should be a configuratable item */
 289         sprintf( vals[0].bv_val, "uid=%s,%s",
 290                 pw->pw_name, be->be_suffix[0].bv_val );
 291
 292         rc = dnNormalize2( NULL, vals, &bv );
 293         if( rc != LDAP_SUCCESS ) {
 294                 free( vals[0].bv_val );
 295                 return NULL;
 296         }
 297
 298         e = (Entry *) ch_calloc( 1, sizeof(Entry) );
 299         e->e_name = vals[0];
 300         e->e_nname = bv;
 301
 302         e->e_attrs = NULL;
 303
 304         vals[1].bv_val = NULL;
 305
 306         /* objectclasses should be configurable items */
 307         vals[0].bv_val = "top";
 308         vals[0].bv_len = sizeof("top")-1;
 309         attr_merge( e, ad_objectClass, vals );
 310
 311         vals[0].bv_val = "person";
 312         vals[0].bv_len = sizeof("person")-1;
 313         attr_merge( e, ad_objectClass, vals );
 314
 315         vals[0].bv_val = "uidObject";
 316         vals[0].bv_len = sizeof("uidObject")-1;
 317         attr_merge( e, ad_objectClass, vals );
 318
 319         vals[0].bv_val = pw->pw_name;
 320         vals[0].bv_len = pwlen;
 321         attr_merge( e, ad_uid, vals );  /* required by uidObject */
 322         attr_merge( e, ad_cn, vals );   /* required by person */
 323         attr_merge( e, ad_sn, vals );   /* required by person */
 324
 325 #ifdef HAVE_PW_GECOS
 326         /*
 327          * if gecos is present, add it as a cn. first process it
 328          * according to standard BSD usage. If the processed cn has
 329          * a space, use the tail as the surname.
 330          */
 331         if (pw->pw_gecos[0]) {
 332                 char *s;
 333
 334                 vals[0].bv_val = pw->pw_gecos;
 335                 vals[0].bv_len = strlen(vals[0].bv_val);
 336                 attr_merge(e, ad_description, vals);
 337
 338                 s = strchr(vals[0].bv_val, ',');
 339                 if (s) *s = '\0';
 340
 341                 s = strchr(vals[0].bv_val, '&');
 342                 if (s) {
 343                         char buf[1024];
 344
 345                         if( vals[0].bv_len + pwlen < sizeof(buf) ) {
 346                                 int i = s - vals[0].bv_val;
 347                                 strncpy(buf, vals[0].bv_val, i);
 348                                 s = buf+i;
 349                                 strcpy(s, pw->pw_name);
 350                                 *s = TOUPPER((unsigned char)*s);
 351                                 strcat(s, vals[0].bv_val+i+1);
 352                                 vals[0].bv_val = buf;
 353                         }
 354                 }
 355                 vals[0].bv_len = strlen(vals[0].bv_val);
 356
 357                 if ( vals[0].bv_len && strcasecmp( vals[0].bv_val, pw->pw_name )) {
 358                         attr_merge( e, ad_cn, vals );
 359                 }
 360
 361                 if ( (s=strrchr(vals[0].bv_val, ' '))) {
 362                         vals[0].bv_val = s + 1;
 363                         vals[0].bv_len = strlen(vals[0].bv_val);
 364                         attr_merge(e, ad_sn, vals);
 365                 }
 366         }
 367 #endif
 368
 369         return( e );
 370 }