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
  23 int
  24 passwd_back_search(
  25     Backend     *be,
  26     Connection  *conn,
  27     Operation   *op,
  28     struct berval *base,
  29     struct berval *nbase,
  30     int         scope,
  31     int         deref,
  32     int         slimit,
  33     int         tlimit,
  34     Filter      *filter,
  35     const char  *filterstr,
  36     AttributeName       *attrs,
  37     int         attrsonly
  38 )
  39 {
  40         struct passwd   *pw;
  41         Entry           *e;
  42         char            *s;
  43         time_t          stoptime;
  44
  45         int sent = 0;
  46         int err = LDAP_SUCCESS;
  47
  48         LDAPRDN *rdn = NULL;
  49         char *parent = NULL;
  50         char *matched = NULL;
  51         char *user = NULL;
  52
  53         AttributeDescription *ad_objectClass = slap_schema.si_ad_objectClass;
  54
  55         tlimit = (tlimit > be->be_timelimit || tlimit < 1) ? be->be_timelimit
  56             : tlimit;
  57         stoptime = op->o_time + tlimit;
  58         slimit = (slimit > be->be_sizelimit || slimit < 1) ? be->be_sizelimit
  59             : slimit;
  60
  61         endpwent();
  62
  63 #ifdef HAVE_SETPWFILE
  64         if ( be->be_private != NULL ) {
  65                 (void) setpwfile( (char *) be->be_private );
  66         }
  67 #endif /* HAVE_SETPWFILE */
  68
  69         /* Handle a query for the base of this backend */
  70         if ( be_issuffix( be,  nbase->bv_val ) ) {
  71                 struct berval   val, *vals[2];
  72
  73                 vals[0] = &val;
  74                 vals[1] = NULL;
  75
  76                 matched = (char *) base;
  77
  78                 if( scope != LDAP_SCOPE_ONELEVEL ) {
  79                         const char *text;
  80                         AttributeDescription *desc = NULL;
  81
  82                         /* Create an entry corresponding to the base DN */
  83                         e = (Entry *) ch_calloc(1, sizeof(Entry));
  84                         e->e_name.bv_val = ch_strdup( base->bv_val );
  85                         e->e_name.bv_len = base->bv_len;
  86                         e->e_nname.bv_val =  ch_strdup( nbase->bv_val );
  87                         e->e_nname.bv_len = nbase->bv_len;
  88                         e->e_attrs = NULL;
  89                         e->e_private = NULL;
  90
  91                         /* Use the first attribute of the DN
  92                         * as an attribute within the entry itself.
  93                         */
  94                         if( ldap_str2rdn( base->bv_val, &rdn, &text,
  95                                 LDAP_DN_FORMAT_LDAP ) ) {
  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                         val = 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                         val.bv_val = "organizationalUnit";
 120                         val.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                                 e = pw2entry( be, pw );
 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                                                 return( 0 );
 160                                         }
 161
 162                                         send_search_entry( be, conn, op,
 163                                                 e, attrs, attrsonly, NULL );
 164                                         sent++;
 165                                 }
 166
 167                                 entry_free( e );
 168                         }
 169                         endpwent();
 170                 }
 171
 172         } else {
 173                 const char *text = NULL;
 174
 175                 parent = dn_parent( be, nbase->bv_val );
 176
 177                 /* This backend is only one layer deep. Don't answer requests for
 178                  * anything deeper than that.
 179                  */
 180                 if( !be_issuffix( be, parent ) ) {
 181                         int i;
 182                         for( i=0; be->be_nsuffix[i] != NULL; i++ ) {
 183                                 if( dnIsSuffix( nbase, be->be_nsuffix[i] ) ) {
 184                                         matched = be->be_suffix[i]->bv_val;
 185                                         break;
 186                                 }
 187                         }
 188                         err = LDAP_NO_SUCH_OBJECT;
 189                         goto done;
 190                 }
 191
 192                 if( scope == LDAP_SCOPE_ONELEVEL ) {
 193                         goto done;
 194                 }
 195
 196                 if ( ldap_str2rdn( base->bv_val, &rdn, &text, LDAP_DN_FORMAT_LDAP )) {
 197                         err = LDAP_OPERATIONS_ERROR;
 198                         goto done;
 199                 }
 200
 201                 if ( (pw = getpwnam( rdn[0][0]->la_value.bv_val )) == NULL ) {
 202                         matched = parent;
 203                         err = LDAP_NO_SUCH_OBJECT;
 204                         goto done;
 205                 }
 206
 207                 e = pw2entry( be, pw );
 208
 209                 if ( test_filter( be, conn, op, e, filter ) == LDAP_COMPARE_TRUE ) {
 210                         send_search_entry( be, conn, op,
 211                                 e, attrs, attrsonly, NULL );
 212                         sent++;
 213                 }
 214
 215                 entry_free( e );
 216         }
 217
 218 done:
 219         send_ldap_result( conn, op,
 220                 err, err == LDAP_NO_SUCH_OBJECT ? matched : NULL, NULL,
 221                 NULL, NULL );
 222
 223         if( rdn != NULL ) ldap_rdnfree( rdn );
 224
 225         return( 0 );
 226 }
 227
 228 static Entry *
 229 pw2entry( Backend *be, struct passwd *pw )
 230 {
 231         size_t pwlen;
 232         Entry           *e;
 233         struct berval   val;
 234         struct berval   *vals[2];
 235         struct berval   bv;
 236
 237         int rc;
 238         const char *text;
 239
 240         AttributeDescription *ad_objectClass = slap_schema.si_ad_objectClass;
 241         AttributeDescription *ad_cn = NULL;
 242         AttributeDescription *ad_sn = NULL;
 243         AttributeDescription *ad_uid = NULL;
 244         AttributeDescription *ad_description = NULL;
 245
 246         rc = slap_str2ad( "cn", &ad_cn, &text );
 247         if(rc != LDAP_SUCCESS) return NULL;
 248         rc = slap_str2ad( "sn", &ad_sn, &text );
 249         if(rc != LDAP_SUCCESS) return NULL;
 250         rc = slap_str2ad( "uid", &ad_uid, &text );
 251         if(rc != LDAP_SUCCESS) return NULL;
 252         rc = slap_str2ad( "description", &ad_description, &text );
 253         if(rc != LDAP_SUCCESS) return NULL;
 254
 255         /*
 256          * from pw we get pw_name and make it cn
 257          * give it an objectclass of person.
 258          */
 259
 260         pwlen = strlen( pw->pw_name );
 261         val.bv_len = (sizeof("uid=,")-1) + ( pwlen + be->be_suffix[0]->bv_len );
 262         val.bv_val = ch_malloc( val.bv_len + 1 );
 263
 264         /* rdn attribute type should be a configuratable item */
 265         sprintf( val.bv_val, "uid=%s,%s",
 266                 pw->pw_name, be->be_suffix[0]->bv_val );
 267
 268         rc = dnNormalize2( NULL, &val, &bv );
 269         if( rc != LDAP_SUCCESS ) {
 270                 free( val.bv_val );
 271                 return NULL;
 272         }
 273
 274         e = (Entry *) ch_calloc( 1, sizeof(Entry) );
 275         e->e_name = val;
 276         e->e_nname = bv;
 277
 278         e->e_attrs = NULL;
 279
 280         vals[0] = &val;
 281         vals[1] = NULL;
 282
 283         /* objectclasses should be configurable items */
 284         val.bv_val = "top";
 285         val.bv_len = sizeof("top")-1;
 286         attr_merge( e, ad_objectClass, vals );
 287
 288         val.bv_val = "person";
 289         val.bv_len = sizeof("person")-1;
 290         attr_merge( e, ad_objectClass, vals );
 291
 292         val.bv_val = "uidObject";
 293         val.bv_len = sizeof("uidObject")-1;
 294         attr_merge( e, ad_objectClass, vals );
 295
 296         val.bv_val = pw->pw_name;
 297         val.bv_len = pwlen;
 298         attr_merge( e, ad_uid, vals );  /* required by uidObject */
 299         attr_merge( e, ad_cn, vals );   /* required by person */
 300         attr_merge( e, ad_sn, vals );   /* required by person */
 301
 302 #ifdef HAVE_PW_GECOS
 303         /*
 304          * if gecos is present, add it as a cn. first process it
 305          * according to standard BSD usage. If the processed cn has
 306          * a space, use the tail as the surname.
 307          */
 308         if (pw->pw_gecos[0]) {
 309                 char *s;
 310
 311                 val.bv_val = pw->pw_gecos;
 312                 val.bv_len = strlen(val.bv_val);
 313                 attr_merge(e, ad_description, vals);
 314
 315                 s = strchr(val.bv_val, ',');
 316                 if (s) *s = '\0';
 317
 318                 s = strchr(val.bv_val, '&');
 319                 if (s) {
 320                         char buf[256];
 321                         int i = s - val.bv_val;
 322                         strncpy(buf, val.bv_val, i);
 323                         s = buf+i;
 324                         strcpy(s, pw->pw_name);
 325                         *s = TOUPPER(*s);
 326                         strcat(s, val.bv_val+i+1);
 327                         val.bv_val = buf;
 328                 }
 329                 val.bv_len = strlen(val.bv_val);
 330                 if ( strcmp( val.bv_val, pw->pw_name ))
 331                         attr_merge( e, ad_cn, vals );
 332                 if ( (s=strrchr(val.bv_val, ' '))) {
 333                         val.bv_val = s + 1;
 334                         val.bv_len = strlen(val.bv_val);
 335                         attr_merge(e, ad_sn, vals);
 336                 }
 337         }
 338 #endif
 339
 340         return( e );
 341 }