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                         /* Use the first attribute of the DN
  89                         * as an attribute within the entry itself.
  90                         */
  91                         rdn = dn_rdn(NULL, base);
  92
  93                         if( rdn == NULL || (s = strchr(rdn, '=')) == NULL ) {
  94                                 err = LDAP_INVALID_DN_SYNTAX;
  95                                 free(rdn);
  96                                 goto done;
  97                         }
  98
  99                         val.bv_val = rdn_attr_value(rdn);
 100                         val.bv_len = strlen( val.bv_val );
 101
 102                         type = rdn_attr_type(rdn);
 103
 104                         {
 105                                 int rc;
 106                                 const char *text;
 107                                 rc = slap_str2ad( type, &desc, &text );
 108
 109                                 if( rc != LDAP_SUCCESS ) {
 110                                         err = LDAP_NO_SUCH_OBJECT;
 111                                         free(rdn);
 112                                         goto done;
 113                                 }
 114                         }
 115
 116                         attr_merge( e, desc, vals );
 117
 118                         free(rdn);
 119                         rdn = NULL;
 120
 121                         /* Every entry needs an objectclass. We don't really
 122                          * know if our hardcoded choice here agrees with the
 123                          * DN that was configured for this backend, but it's
 124                          * better than nothing.
 125                          *
 126                          * should be a configuratable item
 127                          */
 128                         val.bv_val = "organizationalUnit";
 129                         val.bv_len = sizeof("organizationalUnit")-1;
 130                         attr_merge( e, ad_objectClass, vals );
 131
 132                         if ( test_filter( be, conn, op, e, filter ) == LDAP_COMPARE_TRUE ) {
 133                                 send_search_entry( be, conn, op,
 134                                         e, attrs, attrsonly, NULL );
 135                                 sent++;
 136                         }
 137                 }
 138
 139                 if ( scope != LDAP_SCOPE_BASE ) {
 140                         /* check all our "children" */
 141
 142                         for ( pw = getpwent(); pw != NULL; pw = getpwent() ) {
 143                                 /* check for abandon */
 144                                 ldap_pvt_thread_mutex_lock( &op->o_abandonmutex );
 145                                 if ( op->o_abandon ) {
 146                                         ldap_pvt_thread_mutex_unlock( &op->o_abandonmutex );
 147                                         endpwent();
 148                                         return( -1 );
 149                                 }
 150                                 ldap_pvt_thread_mutex_unlock( &op->o_abandonmutex );
 151
 152                                 /* check time limit */
 153                                 if ( slap_get_time() > stoptime ) {
 154                                         send_ldap_result( conn, op, LDAP_TIMELIMIT_EXCEEDED,
 155                                         NULL, NULL, NULL, NULL );
 156                                         endpwent();
 157                                         return( 0 );
 158                                 }
 159
 160                                 e = pw2entry( be, pw, NULL );
 161
 162                                 if ( test_filter( be, conn, op, e, filter ) == LDAP_COMPARE_TRUE ) {
 163                                         /* check size limit */
 164                                         if ( --slimit == -1 ) {
 165                                                 send_ldap_result( conn, op, LDAP_SIZELIMIT_EXCEEDED,
 166                                                 NULL, NULL, NULL, NULL );
 167                                                 endpwent();
 168                                                 return( 0 );
 169                                         }
 170
 171                                         send_search_entry( be, conn, op,
 172                                                 e, attrs, attrsonly, NULL );
 173                                         sent++;
 174                                 }
 175
 176                                 entry_free( e );
 177                         }
 178                         endpwent();
 179                 }
 180
 181         } else {
 182                 parent = dn_parent( be, nbase );
 183
 184                 /* This backend is only one layer deep. Don't answer requests for
 185                  * anything deeper than that.
 186                  */
 187                 if( !be_issuffix( be, parent ) ) {
 188                         int i;
 189                         for( i=0; be->be_nsuffix[i] != NULL; i++ ) {
 190                                 if( dn_issuffix( nbase, be->be_nsuffix[i] ) ) {
 191                                         matched = ch_strdup( be->be_suffix[i] );
 192                                         break;
 193                                 }
 194                         }
 195                         err = LDAP_NO_SUCH_OBJECT;
 196                         goto done;
 197                 }
 198
 199                 if( scope == LDAP_SCOPE_ONELEVEL ) {
 200                         goto done;
 201                 }
 202
 203                 rdn = dn_rdn( NULL, base );
 204
 205                 if ( (user = rdn_attr_value(rdn)) == NULL) {
 206                         err = LDAP_OPERATIONS_ERROR;
 207                         goto done;
 208                 }
 209
 210                 if ( (pw = getpwnam( user )) == NULL ) {
 211                         matched = parent;
 212                         parent = NULL;
 213                         err = LDAP_NO_SUCH_OBJECT;
 214                         goto done;
 215                 }
 216
 217                 e = pw2entry( be, pw, rdn );
 218
 219                 if ( test_filter( be, conn, op, e, filter ) == LDAP_COMPARE_TRUE ) {
 220                         send_search_entry( be, conn, op,
 221                                 e, attrs, attrsonly, NULL );
 222                         sent++;
 223                 }
 224
 225                 entry_free( e );
 226         }
 227
 228 done:
 229         send_ldap_result( conn, op,
 230                 err, err == LDAP_NO_SUCH_OBJECT ? matched : NULL, NULL,
 231                 NULL, NULL );
 232
 233         if( matched != NULL ) free( matched );
 234         if( parent != NULL ) free( parent );
 235         if( rdn != NULL ) free( rdn );
 236         if( user != NULL ) free( user );
 237
 238         return( 0 );
 239 }
 240
 241 static Entry *
 242 pw2entry( Backend *be, struct passwd *pw, char *rdn )
 243 {
 244         Entry           *e;
 245         char            buf[256];
 246         struct berval   val;
 247         struct berval   *vals[2];
 248
 249         int rc;
 250         const char *text;
 251
 252         AttributeDescription *ad_objectClass = NULL;
 253         AttributeDescription *ad_cn = NULL;
 254         AttributeDescription *ad_sn = NULL;
 255         AttributeDescription *ad_uid = NULL;
 256         AttributeDescription *ad_description = NULL;
 257
 258         rc = slap_str2ad( "objectClass", &ad_objectClass, &text );
 259
 260         if(rc != LDAP_SUCCESS) return NULL;
 261         rc = slap_str2ad( "cn", &ad_cn, &text );
 262         if(rc != LDAP_SUCCESS) return NULL;
 263         rc = slap_str2ad( "sn", &ad_sn, &text );
 264         if(rc != LDAP_SUCCESS) return NULL;
 265         rc = slap_str2ad( "uid", &ad_uid, &text );
 266         if(rc != LDAP_SUCCESS) return NULL;
 267         rc = slap_str2ad( "description", &ad_description, &text );
 268         if(rc != LDAP_SUCCESS) return NULL;
 269
 270
 271         vals[0] = &val;
 272         vals[1] = NULL;
 273
 274         /*
 275          * from pw we get pw_name and make it cn
 276          * give it an objectclass of person.
 277          */
 278
 279         e = (Entry *) ch_calloc( 1, sizeof(Entry) );
 280         e->e_attrs = NULL;
 281
 282         /* objectclasses should be configuratable items */
 283         val.bv_val = "top";
 284         val.bv_len = sizeof("top")-1;
 285         attr_merge( e, ad_objectClass, vals );
 286
 287         val.bv_val = "person";
 288         val.bv_len = sizeof("person")-1;
 289         attr_merge( e, ad_objectClass, vals );
 290
 291         val.bv_val = "uidObject";
 292         val.bv_len = sizeof("uidObject")-1;
 293         attr_merge( e, ad_objectClass, vals );
 294
 295         /* rdn attribute type should be a configuratable item */
 296         sprintf( buf, "uid=%s,%s", pw->pw_name, be->be_suffix[0] );
 297         e->e_dn = ch_strdup( buf );
 298         e->e_ndn = ch_strdup( buf );
 299         (void) dn_normalize( e->e_ndn );
 300
 301         val.bv_val = pw->pw_name;
 302         val.bv_len = strlen( pw->pw_name );
 303         attr_merge( e, ad_uid, vals );  /* required by uidObject */
 304         attr_merge( e, ad_cn, vals );   /* required by person */
 305         attr_merge( e, ad_sn, vals );   /* required by person */
 306
 307 #ifdef HAVE_PW_GECOS
 308         /*
 309          * if gecos is present, add it as a cn. first process it
 310          * according to standard BSD usage. If the processed cn has
 311          * a space, use the tail as the surname.
 312          */
 313         if (pw->pw_gecos[0]) {
 314                 char *s;
 315
 316                 val.bv_val = pw->pw_gecos;
 317                 val.bv_len = strlen(val.bv_val);
 318                 attr_merge(e, ad_description, vals);
 319
 320                 s = strchr(val.bv_val, ',');
 321                 if (s)
 322                         *s = '\0';
 323                 s = strchr(val.bv_val, '&');
 324                 if (s) {
 325                         int i = s - val.bv_val;
 326                         strncpy(buf, val.bv_val, i);
 327                         s = buf+i;
 328                         strcpy(s, pw->pw_name);
 329                         *s = TOUPPER(*s);
 330                         strcat(s, val.bv_val+i+1);
 331                         val.bv_val = buf;
 332                 }
 333                 val.bv_len = strlen(val.bv_val);
 334                 if ( strcmp( val.bv_val, pw->pw_name ))
 335                         attr_merge( e, ad_cn, vals );
 336                 if ( (s=strrchr(val.bv_val, ' '))) {
 337                         val.bv_val = s + 1;
 338                         val.bv_len = strlen(val.bv_val);
 339                         attr_merge(e, ad_sn, vals);
 340                 }
 341         }
 342 #endif
 343
 344         return( e );
 345 }