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         char *rdn);
  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     const char  *filterstr,
  37     struct berval       **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         char *rdn = NULL;
  50         char *parent = NULL;
  51         char *matched = NULL;
  52         char *user = 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   val, *vals[2];
  73
  74                 vals[0] = &val;
  75                 vals[1] = NULL;
  76
  77                 matched = (char *) base;
  78
  79                 if( scope != LDAP_SCOPE_ONELEVEL ) {
  80                         char *type;
  81                         AttributeDescription *desc = NULL;
  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( base->bv_val );
  86                         e->e_name.bv_len = base->bv_len;
  87                         e->e_nname.bv_val =  ch_strdup( nbase->bv_val );
  88                         e->e_nname.bv_len = nbase->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                         rdn = dn_rdn(NULL, base);
  96
  97                         if( rdn == NULL || (s = strchr(rdn, '=')) == NULL ) {
  98                                 err = LDAP_INVALID_DN_SYNTAX;
  99                                 free(rdn);
 100                                 goto done;
 101                         }
 102
 103                         val.bv_val = rdn_attr_value(rdn);
 104                         val.bv_len = strlen( val.bv_val );
 105
 106                         type = rdn_attr_type(rdn);
 107
 108                         {
 109                                 int rc;
 110                                 const char *text;
 111                                 rc = slap_str2ad( type, &desc, &text );
 112
 113                                 if( rc != LDAP_SUCCESS ) {
 114                                         err = LDAP_NO_SUCH_OBJECT;
 115                                         free(rdn);
 116                                         goto done;
 117                                 }
 118                         }
 119
 120                         attr_merge( e, desc, vals );
 121
 122                         free(rdn);
 123                         rdn = NULL;
 124
 125                         /* Every entry needs an objectclass. We don't really
 126                          * know if our hardcoded choice here agrees with the
 127                          * DN that was configured for this backend, but it's
 128                          * better than nothing.
 129                          *
 130                          * should be a configuratable item
 131                          */
 132                         val.bv_val = "organizationalUnit";
 133                         val.bv_len = sizeof("organizationalUnit")-1;
 134                         attr_merge( e, ad_objectClass, vals );
 135
 136                         if ( test_filter( be, conn, op, e, filter ) == LDAP_COMPARE_TRUE ) {
 137                                 send_search_entry( be, conn, op,
 138                                         e, attrs, attrsonly, NULL );
 139                                 sent++;
 140                         }
 141                 }
 142
 143                 if ( scope != LDAP_SCOPE_BASE ) {
 144                         /* check all our "children" */
 145
 146                         for ( pw = getpwent(); pw != NULL; pw = getpwent() ) {
 147                                 /* check for abandon */
 148                                 ldap_pvt_thread_mutex_lock( &op->o_abandonmutex );
 149                                 if ( op->o_abandon ) {
 150                                         ldap_pvt_thread_mutex_unlock( &op->o_abandonmutex );
 151                                         endpwent();
 152                                         return( -1 );
 153                                 }
 154                                 ldap_pvt_thread_mutex_unlock( &op->o_abandonmutex );
 155
 156                                 /* check time limit */
 157                                 if ( slap_get_time() > stoptime ) {
 158                                         send_ldap_result( conn, op, LDAP_TIMELIMIT_EXCEEDED,
 159                                         NULL, NULL, NULL, NULL );
 160                                         endpwent();
 161                                         return( 0 );
 162                                 }
 163
 164                                 e = pw2entry( be, pw, NULL );
 165
 166                                 if ( test_filter( be, conn, op, e, filter ) == LDAP_COMPARE_TRUE ) {
 167                                         /* check size limit */
 168                                         if ( --slimit == -1 ) {
 169                                                 send_ldap_result( conn, op, LDAP_SIZELIMIT_EXCEEDED,
 170                                                 NULL, NULL, NULL, NULL );
 171                                                 endpwent();
 172                                                 return( 0 );
 173                                         }
 174
 175                                         send_search_entry( be, conn, op,
 176                                                 e, attrs, attrsonly, NULL );
 177                                         sent++;
 178                                 }
 179
 180                                 entry_free( e );
 181                         }
 182                         endpwent();
 183                 }
 184
 185         } else {
 186                 parent = dn_parent( be, nbase->bv_val );
 187
 188                 /* This backend is only one layer deep. Don't answer requests for
 189                  * anything deeper than that.
 190                  */
 191                 if( !be_issuffix( be, parent ) ) {
 192                         int i;
 193                         for( i=0; be->be_nsuffix[i] != NULL; i++ ) {
 194                                 if( dnIsSuffix( nbase, be->be_nsuffix[i] ) ) {
 195                                         matched = be->be_suffix[i]->bv_val;
 196                                         break;
 197                                 }
 198                         }
 199                         err = LDAP_NO_SUCH_OBJECT;
 200                         goto done;
 201                 }
 202
 203                 if( scope == LDAP_SCOPE_ONELEVEL ) {
 204                         goto done;
 205                 }
 206
 207                 rdn = dn_rdn( NULL, base );
 208
 209                 if ( (user = rdn_attr_value(rdn)) == NULL) {
 210                         err = LDAP_OPERATIONS_ERROR;
 211                         goto done;
 212                 }
 213
 214                 if ( (pw = getpwnam( user )) == NULL ) {
 215                         matched = parent;
 216                         err = LDAP_NO_SUCH_OBJECT;
 217                         goto done;
 218                 }
 219
 220                 e = pw2entry( be, pw, rdn );
 221
 222                 if ( test_filter( be, conn, op, e, filter ) == LDAP_COMPARE_TRUE ) {
 223                         send_search_entry( be, conn, op,
 224                                 e, attrs, attrsonly, NULL );
 225                         sent++;
 226                 }
 227
 228                 entry_free( e );
 229         }
 230
 231 done:
 232         send_ldap_result( conn, op,
 233                 err, err == LDAP_NO_SUCH_OBJECT ? matched : NULL, NULL,
 234                 NULL, NULL );
 235
 236         if( rdn != NULL ) free( rdn );
 237         if( user != NULL ) free( user );
 238
 239         return( 0 );
 240 }
 241
 242 static Entry *
 243 pw2entry( Backend *be, struct passwd *pw, char *rdn )
 244 {
 245         size_t pwlen;
 246         Entry           *e;
 247         struct berval   val;
 248         struct berval   *vals[2];
 249         struct berval   bv;
 250
 251         int rc;
 252         const char *text;
 253
 254         AttributeDescription *ad_objectClass = slap_schema.si_ad_objectClass;
 255         AttributeDescription *ad_cn = NULL;
 256         AttributeDescription *ad_sn = NULL;
 257         AttributeDescription *ad_uid = NULL;
 258         AttributeDescription *ad_description = NULL;
 259
 260         rc = slap_str2ad( "cn", &ad_cn, &text );
 261         if(rc != LDAP_SUCCESS) return NULL;
 262         rc = slap_str2ad( "sn", &ad_sn, &text );
 263         if(rc != LDAP_SUCCESS) return NULL;
 264         rc = slap_str2ad( "uid", &ad_uid, &text );
 265         if(rc != LDAP_SUCCESS) return NULL;
 266         rc = slap_str2ad( "description", &ad_description, &text );
 267         if(rc != LDAP_SUCCESS) return NULL;
 268
 269         /*
 270          * from pw we get pw_name and make it cn
 271          * give it an objectclass of person.
 272          */
 273
 274         pwlen = strlen( pw->pw_name );
 275         val.bv_len = (sizeof("uid=,")-1) + ( pwlen + be->be_suffix[0]->bv_len );
 276         val.bv_val = ch_malloc( val.bv_len + 1 );
 277
 278         /* rdn attribute type should be a configuratable item */
 279         sprintf( val.bv_val, "uid=%s,%s",
 280                 pw->pw_name, be->be_suffix[0]->bv_val );
 281
 282         rc = dnNormalize2( NULL, &val, &bv );
 283         if( rc != LDAP_SUCCESS ) {
 284                 free( val.bv_val );
 285                 return NULL;
 286         }
 287
 288         e = (Entry *) ch_calloc( 1, sizeof(Entry) );
 289         e->e_name = val;
 290         e->e_nname = bv;
 291
 292         e->e_attrs = NULL;
 293
 294         vals[0] = &val;
 295         vals[1] = NULL;
 296
 297         /* objectclasses should be configurable items */
 298         val.bv_val = "top";
 299         val.bv_len = sizeof("top")-1;
 300         attr_merge( e, ad_objectClass, vals );
 301
 302         val.bv_val = "person";
 303         val.bv_len = sizeof("person")-1;
 304         attr_merge( e, ad_objectClass, vals );
 305
 306         val.bv_val = "uidObject";
 307         val.bv_len = sizeof("uidObject")-1;
 308         attr_merge( e, ad_objectClass, vals );
 309
 310         val.bv_val = pw->pw_name;
 311         val.bv_len = pwlen;
 312         attr_merge( e, ad_uid, vals );  /* required by uidObject */
 313         attr_merge( e, ad_cn, vals );   /* required by person */
 314         attr_merge( e, ad_sn, vals );   /* required by person */
 315
 316 #ifdef HAVE_PW_GECOS
 317         /*
 318          * if gecos is present, add it as a cn. first process it
 319          * according to standard BSD usage. If the processed cn has
 320          * a space, use the tail as the surname.
 321          */
 322         if (pw->pw_gecos[0]) {
 323                 char *s;
 324
 325                 val.bv_val = pw->pw_gecos;
 326                 val.bv_len = strlen(val.bv_val);
 327                 attr_merge(e, ad_description, vals);
 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[256];
 335                         int i = s - val.bv_val;
 336                         strncpy(buf, val.bv_val, i);
 337                         s = buf+i;
 338                         strcpy(s, pw->pw_name);
 339                         *s = TOUPPER(*s);
 340                         strcat(s, val.bv_val+i+1);
 341                         val.bv_val = buf;
 342                 }
 343                 val.bv_len = strlen(val.bv_val);
 344                 if ( strcmp( val.bv_val, pw->pw_name ))
 345                         attr_merge( e, ad_cn, vals );
 346                 if ( (s=strrchr(val.bv_val, ' '))) {
 347                         val.bv_val = s + 1;
 348                         val.bv_len = strlen(val.bv_val);
 349                         attr_merge(e, ad_sn, vals);
 350                 }
 351         }
 352 #endif
 353
 354         return( e );
 355 }