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         struct berval parent = { 0, 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 ) ) {
  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_bv2rdn( base, &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                                 if ( op->o_abandon ) {
 136                                         endpwent();
 137                                         return( -1 );
 138                                 }
 139
 140                                 /* check time limit */
 141                                 if ( slap_get_time() > stoptime ) {
 142                                         send_ldap_result( conn, op, LDAP_TIMELIMIT_EXCEEDED,
 143                                         NULL, NULL, NULL, NULL );
 144                                         endpwent();
 145                                         return( 0 );
 146                                 }
 147
 148                                 if ( !(e = pw2entry( be, pw, &text )) ) {
 149                                         err = LDAP_OPERATIONS_ERROR;
 150                                         endpwent();
 151                                         goto done;
 152                                 }
 153
 154                                 if ( test_filter( be, conn, op, e, filter ) == LDAP_COMPARE_TRUE ) {
 155                                         /* check size limit */
 156                                         if ( --slimit == -1 ) {
 157                                                 send_ldap_result( conn, op, LDAP_SIZELIMIT_EXCEEDED,
 158                                                 NULL, NULL, NULL, NULL );
 159                                                 endpwent();
 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                 }
 172
 173         } else {
 174                 if (! be_issuffix( be, nbase ) ) {
 175                         dnParent( nbase, &parent );
 176                 }
 177
 178                 /* This backend is only one layer deep. Don't answer requests for
 179                  * anything deeper than that.
 180                  */
 181                 if( !be_issuffix( be, &parent ) ) {
 182                         int i;
 183                         for( i=0; be->be_nsuffix[i] != NULL; i++ ) {
 184                                 if( dnIsSuffix( nbase, be->be_nsuffix[i] ) ) {
 185                                         matched = be->be_suffix[i]->bv_val;
 186                                         break;
 187                                 }
 188                         }
 189                         err = LDAP_NO_SUCH_OBJECT;
 190                         goto done;
 191                 }
 192
 193                 if( scope == LDAP_SCOPE_ONELEVEL ) {
 194                         goto done;
 195                 }
 196
 197                 if ( ldap_bv2rdn( base, &rdn, (char **)&text,
 198                         LDAP_DN_FORMAT_LDAP ))
 199                 {
 200                         err = LDAP_OPERATIONS_ERROR;
 201                         goto done;
 202                 }
 203
 204                 if ( (pw = getpwnam( rdn[0][0]->la_value.bv_val )) == NULL ) {
 205                         matched = parent.bv_val;
 206                         err = LDAP_NO_SUCH_OBJECT;
 207                         goto done;
 208                 }
 209
 210                 if ( !(e = pw2entry( be, pw, &text )) ) {
 211                         err = LDAP_OPERATIONS_ERROR;
 212                         goto done;
 213                 }
 214
 215                 if ( test_filter( be, conn, op, e, filter ) == LDAP_COMPARE_TRUE ) {
 216                         send_search_entry( be, conn, op,
 217                                 e, attrs, attrsonly, NULL );
 218                         sent++;
 219                 }
 220
 221                 entry_free( e );
 222         }
 223
 224 done:
 225         send_ldap_result( conn, op,
 226                 err, err == LDAP_NO_SUCH_OBJECT ? matched : NULL, text,
 227                 NULL, NULL );
 228
 229         if( rdn != NULL ) ldap_rdnfree( rdn );
 230
 231         return( 0 );
 232 }
 233
 234 static Entry *
 235 pw2entry( Backend *be, struct passwd *pw, const char **text )
 236 {
 237         size_t pwlen;
 238         Entry           *e;
 239         struct berval   vals[2];
 240         struct berval   bv;
 241
 242         int rc;
 243
 244         AttributeDescription *ad_objectClass = slap_schema.si_ad_objectClass;
 245         AttributeDescription *ad_cn = NULL;
 246         AttributeDescription *ad_sn = NULL;
 247         AttributeDescription *ad_uid = NULL;
 248         AttributeDescription *ad_description = NULL;
 249
 250         rc = slap_str2ad( "cn", &ad_cn, text );
 251         if(rc != LDAP_SUCCESS) return NULL;
 252         rc = slap_str2ad( "sn", &ad_sn, text );
 253         if(rc != LDAP_SUCCESS) return NULL;
 254         rc = slap_str2ad( "uid", &ad_uid, text );
 255         if(rc != LDAP_SUCCESS) return NULL;
 256         rc = slap_str2ad( "description", &ad_description, text );
 257         if(rc != LDAP_SUCCESS) return NULL;
 258
 259         /*
 260          * from pw we get pw_name and make it cn
 261          * give it an objectclass of person.
 262          */
 263
 264         pwlen = strlen( pw->pw_name );
 265         vals[0].bv_len = (sizeof("uid=,")-1) + ( pwlen + be->be_suffix[0]->bv_len );
 266         vals[0].bv_val = ch_malloc( vals[0].bv_len + 1 );
 267
 268         /* rdn attribute type should be a configuratable item */
 269         sprintf( vals[0].bv_val, "uid=%s,%s",
 270                 pw->pw_name, be->be_suffix[0]->bv_val );
 271
 272         rc = dnNormalize2( NULL, vals, &bv );
 273         if( rc != LDAP_SUCCESS ) {
 274                 free( vals[0].bv_val );
 275                 return NULL;
 276         }
 277
 278         e = (Entry *) ch_calloc( 1, sizeof(Entry) );
 279         e->e_name = vals[0];
 280         e->e_nname = bv;
 281
 282         e->e_attrs = NULL;
 283
 284         vals[1].bv_val = NULL;
 285
 286         /* objectclasses should be configurable items */
 287         vals[0].bv_val = "top";
 288         vals[0].bv_len = sizeof("top")-1;
 289         attr_merge( e, ad_objectClass, vals );
 290
 291         vals[0].bv_val = "person";
 292         vals[0].bv_len = sizeof("person")-1;
 293         attr_merge( e, ad_objectClass, vals );
 294
 295         vals[0].bv_val = "uidObject";
 296         vals[0].bv_len = sizeof("uidObject")-1;
 297         attr_merge( e, ad_objectClass, vals );
 298
 299         vals[0].bv_val = pw->pw_name;
 300         vals[0].bv_len = pwlen;
 301         attr_merge( e, ad_uid, vals );  /* required by uidObject */
 302         attr_merge( e, ad_cn, vals );   /* required by person */
 303         attr_merge( e, ad_sn, vals );   /* required by person */
 304
 305 #ifdef HAVE_PW_GECOS
 306         /*
 307          * if gecos is present, add it as a cn. first process it
 308          * according to standard BSD usage. If the processed cn has
 309          * a space, use the tail as the surname.
 310          */
 311         if (pw->pw_gecos[0]) {
 312                 char *s;
 313
 314                 vals[0].bv_val = pw->pw_gecos;
 315                 vals[0].bv_len = strlen(vals[0].bv_val);
 316                 attr_merge(e, ad_description, vals);
 317
 318                 s = strchr(vals[0].bv_val, ',');
 319                 if (s) *s = '\0';
 320
 321                 s = strchr(vals[0].bv_val, '&');
 322                 if (s) {
 323                         char buf[256];
 324                         int i = s - vals[0].bv_val;
 325                         strncpy(buf, vals[0].bv_val, i);
 326                         s = buf+i;
 327                         strcpy(s, pw->pw_name);
 328                         *s = TOUPPER((unsigned char)*s);
 329                         strcat(s, vals[0].bv_val+i+1);
 330                         vals[0].bv_val = buf;
 331                 }
 332                 vals[0].bv_len = strlen(vals[0].bv_val);
 333                 if ( strcmp( vals[0].bv_val, pw->pw_name ))
 334                         attr_merge( e, ad_cn, vals );
 335                 if ( (s=strrchr(vals[0].bv_val, ' '))) {
 336                         vals[0].bv_val = s + 1;
 337                         vals[0].bv_len = strlen(vals[0].bv_val);
 338                         attr_merge(e, ad_sn, vals);
 339                 }
 340         }
 341 #endif
 342
 343         return( e );
 344 }