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     const char  *base,
  30     const char  *nbase,
  31     int         scope,
  32     int         deref,
  33     int         slimit,
  34     int         tlimit,
  35     Filter      *filter,
  36     const char  *filterstr,
  37     char        **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 ) ) {
  72                 struct berval   val, *vals[2];
  73
  74                 vals[0] = &val;
  75                 vals[1] = NULL;
  76
  77                 matched = ch_strdup( 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_attrs = NULL;
  86                         e->e_dn = ch_strdup( base );
  87
  88                         e->e_ndn = ch_strdup( e->e_dn );
  89                         (void) dn_normalize( e->e_ndn );
  90
  91                         /* Use the first attribute of the DN
  92                         * as an attribute within the entry itself.
  93                         */
  94                         rdn = dn_rdn(NULL, base);
  95
  96                         if( rdn == NULL || (s = strchr(rdn, '=')) == NULL ) {
  97                                 err = LDAP_INVALID_DN_SYNTAX;
  98                                 free(rdn);
  99                                 goto done;
 100                         }
 101
 102                         val.bv_val = rdn_attr_value(rdn);
 103                         val.bv_len = strlen( val.bv_val );
 104
 105                         type = rdn_attr_type(rdn);
 106
 107                         {
 108                                 int rc;
 109                                 const char *text;
 110                                 rc = slap_str2ad( type, &desc, &text );
 111
 112                                 if( rc != LDAP_SUCCESS ) {
 113                                         err = LDAP_NO_SUCH_OBJECT;
 114                                         free(rdn);
 115                                         goto done;
 116                                 }
 117                         }
 118
 119                         attr_merge( e, desc, vals );
 120
 121                         free(rdn);
 122                         rdn = NULL;
 123
 124                         /* Every entry needs an objectclass. We don't really
 125                          * know if our hardcoded choice here agrees with the
 126                          * DN that was configured for this backend, but it's
 127                          * better than nothing.
 128                          *
 129                          * should be a configuratable item
 130                          */
 131                         val.bv_val = "organizationalUnit";
 132                         val.bv_len = sizeof("organizationalUnit")-1;
 133                         attr_merge( e, ad_objectClass, vals );
 134
 135                         if ( test_filter( be, conn, op, e, filter ) == LDAP_COMPARE_TRUE ) {
 136                                 send_search_entry( be, conn, op,
 137                                         e, attrs, attrsonly, NULL );
 138                                 sent++;
 139                         }
 140                 }
 141
 142                 if ( scope != LDAP_SCOPE_BASE ) {
 143                         /* check all our "children" */
 144
 145                         for ( pw = getpwent(); pw != NULL; pw = getpwent() ) {
 146                                 /* check for abandon */
 147                                 ldap_pvt_thread_mutex_lock( &op->o_abandonmutex );
 148                                 if ( op->o_abandon ) {
 149                                         ldap_pvt_thread_mutex_unlock( &op->o_abandonmutex );
 150                                         endpwent();
 151                                         return( -1 );
 152                                 }
 153                                 ldap_pvt_thread_mutex_unlock( &op->o_abandonmutex );
 154
 155                                 /* check time limit */
 156                                 if ( slap_get_time() > stoptime ) {
 157                                         send_ldap_result( conn, op, LDAP_TIMELIMIT_EXCEEDED,
 158                                         NULL, NULL, NULL, NULL );
 159                                         endpwent();
 160                                         return( 0 );
 161                                 }
 162
 163                                 e = pw2entry( be, pw, NULL );
 164
 165                                 if ( test_filter( be, conn, op, e, filter ) == LDAP_COMPARE_TRUE ) {
 166                                         /* check size limit */
 167                                         if ( --slimit == -1 ) {
 168                                                 send_ldap_result( conn, op, LDAP_SIZELIMIT_EXCEEDED,
 169                                                 NULL, NULL, NULL, NULL );
 170                                                 endpwent();
 171                                                 return( 0 );
 172                                         }
 173
 174                                         send_search_entry( be, conn, op,
 175                                                 e, attrs, attrsonly, NULL );
 176                                         sent++;
 177                                 }
 178
 179                                 entry_free( e );
 180                         }
 181                         endpwent();
 182                 }
 183
 184         } else {
 185                 parent = dn_parent( be, nbase );
 186
 187                 /* This backend is only one layer deep. Don't answer requests for
 188                  * anything deeper than that.
 189                  */
 190                 if( !be_issuffix( be, parent ) ) {
 191                         int i;
 192                         for( i=0; be->be_nsuffix[i] != NULL; i++ ) {
 193                                 if( dn_issuffix( nbase, be->be_nsuffix[i] ) ) {
 194                                         matched = ch_strdup( be->be_suffix[i] );
 195                                         break;
 196                                 }
 197                         }
 198                         err = LDAP_NO_SUCH_OBJECT;
 199                         goto done;
 200                 }
 201
 202                 if( scope == LDAP_SCOPE_ONELEVEL ) {
 203                         goto done;
 204                 }
 205
 206                 rdn = dn_rdn( NULL, base );
 207
 208                 if ( (user = rdn_attr_value(rdn)) == NULL) {
 209                         err = LDAP_OPERATIONS_ERROR;
 210                         goto done;
 211                 }
 212
 213                 if ( (pw = getpwnam( user )) == NULL ) {
 214                         matched = parent;
 215                         parent = NULL;
 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( matched != NULL ) free( matched );
 237         if( parent != NULL ) free( parent );
 238         if( rdn != NULL ) free( rdn );
 239         if( user != NULL ) free( user );
 240
 241         return( 0 );
 242 }
 243
 244 static Entry *
 245 pw2entry( Backend *be, struct passwd *pw, char *rdn )
 246 {
 247         Entry           *e;
 248         char            buf[256];
 249         struct berval   val;
 250         struct berval   *vals[2];
 251
 252         int rc;
 253         const char *text;
 254
 255         AttributeDescription *ad_objectClass = NULL;
 256         AttributeDescription *ad_cn = NULL;
 257         AttributeDescription *ad_sn = NULL;
 258         AttributeDescription *ad_uid = NULL;
 259         AttributeDescription *ad_description = NULL;
 260
 261         rc = slap_str2ad( "objectClass", &ad_objectClass, &text );
 262
 263         if(rc != LDAP_SUCCESS) return NULL;
 264         rc = slap_str2ad( "cn", &ad_cn, &text );
 265         if(rc != LDAP_SUCCESS) return NULL;
 266         rc = slap_str2ad( "sn", &ad_sn, &text );
 267         if(rc != LDAP_SUCCESS) return NULL;
 268         rc = slap_str2ad( "uid", &ad_uid, &text );
 269         if(rc != LDAP_SUCCESS) return NULL;
 270         rc = slap_str2ad( "description", &ad_description, &text );
 271         if(rc != LDAP_SUCCESS) return NULL;
 272
 273
 274         vals[0] = &val;
 275         vals[1] = NULL;
 276
 277         /*
 278          * from pw we get pw_name and make it cn
 279          * give it an objectclass of person.
 280          */
 281
 282         e = (Entry *) ch_calloc( 1, sizeof(Entry) );
 283         e->e_attrs = NULL;
 284
 285         /* objectclasses should be configuratable items */
 286         val.bv_val = "top";
 287         val.bv_len = sizeof("top")-1;
 288         attr_merge( e, ad_objectClass, vals );
 289
 290         val.bv_val = "person";
 291         val.bv_len = sizeof("person")-1;
 292         attr_merge( e, ad_objectClass, vals );
 293
 294         val.bv_val = "uidObject";
 295         val.bv_len = sizeof("uidObject")-1;
 296         attr_merge( e, ad_objectClass, vals );
 297
 298         /* rdn attribute type should be a configuratable item */
 299         sprintf( buf, "uid=%s,%s", pw->pw_name, be->be_suffix[0] );
 300         e->e_dn = ch_strdup( buf );
 301         e->e_ndn = ch_strdup( buf );
 302         (void) dn_normalize( e->e_ndn );
 303
 304         val.bv_val = pw->pw_name;
 305         val.bv_len = strlen( pw->pw_name );
 306         attr_merge( e, ad_uid, vals );  /* required by uidObject */
 307         attr_merge( e, ad_cn, vals );   /* required by person */
 308         attr_merge( e, ad_sn, vals );   /* required by person */
 309
 310 #ifdef HAVE_PW_GECOS
 311         /*
 312          * if gecos is present, add it as a cn. first process it
 313          * according to standard BSD usage. If the processed cn has
 314          * a space, use the tail as the surname.
 315          */
 316         if (pw->pw_gecos[0]) {
 317                 char *s;
 318
 319                 val.bv_val = pw->pw_gecos;
 320                 val.bv_len = strlen(val.bv_val);
 321                 attr_merge(e, ad_description, vals);
 322
 323                 s = strchr(val.bv_val, ',');
 324                 if (s)
 325                         *s = '\0';
 326                 s = strchr(val.bv_val, '&');
 327                 if (s) {
 328                         int i = s - val.bv_val;
 329                         strncpy(buf, val.bv_val, i);
 330                         s = buf+i;
 331                         strcpy(s, pw->pw_name);
 332                         *s = TOUPPER(*s);
 333                         strcat(s, val.bv_val+i+1);
 334                         val.bv_val = buf;
 335                 }
 336                 val.bv_len = strlen(val.bv_val);
 337                 if ( strcmp( val.bv_val, pw->pw_name ))
 338                         attr_merge( e, ad_cn, vals );
 339                 if ( (s=strrchr(val.bv_val, ' '))) {
 340                         val.bv_val = s + 1;
 341                         val.bv_len = strlen(val.bv_val);
 342                         attr_merge(e, ad_sn, vals);
 343                 }
 344         }
 345 #endif
 346
 347         return( e );
 348 }