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     char        *base,
  30     int         scope,
  31     int         deref,
  32     int         slimit,
  33     int         tlimit,
  34     Filter      *filter,
  35     char        *filterstr,
  36     char        **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         char *rdn = NULL;
  49         char *parent = NULL;
  50         char *matched = NULL;
  51         char *user = NULL;
  52
  53         tlimit = (tlimit > be->be_timelimit || tlimit < 1) ? be->be_timelimit
  54             : tlimit;
  55         stoptime = op->o_time + tlimit;
  56         slimit = (slimit > be->be_sizelimit || slimit < 1) ? be->be_sizelimit
  57             : slimit;
  58
  59         endpwent();
  60
  61 #ifdef HAVE_SETPWFILE
  62         if ( be->be_private != NULL ) {
  63                 (void) setpwfile( (char *) be->be_private );
  64         }
  65 #endif /* HAVE_SETPWFILE */
  66
  67         /* Handle a query for the base of this backend */
  68         if ( be_issuffix( be,  base ) ) {
  69                 struct berval   val, *vals[2];
  70
  71                 vals[0] = &val;
  72                 vals[1] = NULL;
  73
  74                 matched = ch_strdup( base );
  75
  76                 if( scope != LDAP_SCOPE_ONELEVEL ) {
  77                         /* Create an entry corresponding to the base DN */
  78                         e = (Entry *) ch_calloc(1, sizeof(Entry));
  79                         e->e_attrs = NULL;
  80                         e->e_dn = ch_strdup( base );
  81
  82                         /* Use the first attribute of the DN
  83                         * as an attribute within the entry itself.
  84                         */
  85                         rdn = dn_rdn(NULL, base);
  86
  87                         if( rdn == NULL || (s = strchr(rdn, '=')) == NULL ) {
  88                                 err = LDAP_INVALID_DN_SYNTAX;
  89                                 goto done;
  90                         }
  91
  92                         val.bv_val = rdn_attr_value(rdn);
  93                         val.bv_len = strlen( val.bv_val );
  94                         attr_merge( e, rdn_attr_type(rdn), vals );
  95
  96                         free(rdn);
  97                         rdn = NULL;
  98
  99                         /* Every entry needs an objectclass. We don't really
 100                          * know if our hardcoded choice here agrees with the
 101                          * DN that was configured for this backend, but it's
 102                          * better than nothing.
 103                          *
 104                          * should be a configuratable item
 105                          */
 106                         val.bv_val = "organizationalUnit";
 107                         val.bv_len = strlen( val.bv_val );
 108                         attr_merge( e, "objectClass", vals );
 109
 110                         if ( test_filter( be, conn, op, e, filter ) == 0 ) {
 111                                 send_search_entry( be, conn, op,
 112                                         e, attrs, attrsonly, NULL );
 113                                 sent++;
 114                         }
 115                 }
 116
 117                 if ( scope != LDAP_SCOPE_BASE ) {
 118                         /* check all our "children" */
 119
 120                         for ( pw = getpwent(); pw != NULL; pw = getpwent() ) {
 121                                 /* check for abandon */
 122                                 ldap_pvt_thread_mutex_lock( &op->o_abandonmutex );
 123                                 if ( op->o_abandon ) {
 124                                         ldap_pvt_thread_mutex_unlock( &op->o_abandonmutex );
 125                                         endpwent();
 126                                         return( -1 );
 127                                 }
 128                                 ldap_pvt_thread_mutex_unlock( &op->o_abandonmutex );
 129
 130                                 /* check time limit */
 131                                 if ( slap_get_time() > stoptime ) {
 132                                         send_ldap_result( conn, op, LDAP_TIMELIMIT_EXCEEDED,
 133                                         NULL, NULL, NULL, NULL );
 134                                         endpwent();
 135                                         return( 0 );
 136                                 }
 137
 138                                 e = pw2entry( be, pw, NULL );
 139
 140                                 if ( test_filter( be, conn, op, e, filter ) == 0 ) {
 141                                         /* check size limit */
 142                                         if ( --slimit == -1 ) {
 143                                                 send_ldap_result( conn, op, LDAP_SIZELIMIT_EXCEEDED,
 144                                                 NULL, NULL, NULL, NULL );
 145                                                 endpwent();
 146                                                 return( 0 );
 147                                         }
 148
 149                                         send_search_entry( be, conn, op,
 150                                                 e, attrs, attrsonly, NULL );
 151                                         sent++;
 152                                 }
 153
 154                                 entry_free( e );
 155                         }
 156                         endpwent();
 157                 }
 158
 159         } else {
 160                 parent = dn_parent( be, base );
 161
 162                 /* This backend is only one layer deep. Don't answer requests for
 163                  * anything deeper than that.
 164                  */
 165                 if( !be_issuffix( be, parent ) ) {
 166                         int i;
 167                         for( i=0; be->be_suffix[i] != NULL; i++ ) {
 168                                 if( dn_issuffix( base, be->be_suffix[i] ) ) {
 169                                         matched = ch_strdup( be->be_suffix[i] );
 170                                         break;
 171                                 }
 172                         }
 173                         err = LDAP_NO_SUCH_OBJECT;
 174                         goto done;
 175                 }
 176
 177                 if( scope == LDAP_SCOPE_ONELEVEL ) {
 178                         goto done;
 179                 }
 180
 181                 rdn = dn_rdn( NULL, base );
 182
 183                 if ( (user = rdn_attr_value(rdn)) == NULL) {
 184                         err = LDAP_OPERATIONS_ERROR;
 185                         goto done;
 186                 }
 187
 188                 user = ldap_pvt_str2lower( user );
 189
 190                 if ( (pw = getpwnam( user )) == NULL ) {
 191                         matched = parent;
 192                         parent = NULL;
 193                         err = LDAP_NO_SUCH_OBJECT;
 194                         goto done;
 195                 }
 196
 197                 e = pw2entry( be, pw, rdn );
 198
 199                 if ( test_filter( be, conn, op, e, filter ) == 0 ) {
 200                         send_search_entry( be, conn, op,
 201                                 e, attrs, attrsonly, NULL );
 202                         sent++;
 203                 }
 204
 205                 entry_free( e );
 206         }
 207
 208 done:
 209         send_ldap_result( conn, op,
 210                 err, err == LDAP_NO_SUCH_OBJECT ? matched : NULL, NULL,
 211                 NULL, NULL );
 212
 213         if( matched != NULL ) free( matched );
 214         if( parent != NULL ) free( parent );
 215         if( rdn != NULL ) free( rdn );
 216         if( user != NULL ) free( user );
 217
 218         return( 0 );
 219 }
 220
 221 static Entry *
 222 pw2entry( Backend *be, struct passwd *pw, char *rdn )
 223 {
 224         Entry           *e;
 225         char            buf[256];
 226         struct berval   val;
 227         struct berval   *vals[2];
 228
 229         vals[0] = &val;
 230         vals[1] = NULL;
 231
 232         /*
 233          * from pw we get pw_name and make it cn
 234          * give it an objectclass of person.
 235          */
 236
 237         e = (Entry *) ch_calloc( 1, sizeof(Entry) );
 238         e->e_attrs = NULL;
 239
 240         /* rdn attribute type should be a configuratable item */
 241         sprintf( buf, "uid=%s,%s", pw->pw_name, be->be_suffix[0] );
 242         e->e_dn = ch_strdup( buf );
 243         e->e_ndn = ch_strdup( buf );
 244         (void) dn_normalize_case( e->e_ndn );
 245
 246         val.bv_val = pw->pw_name;
 247         val.bv_len = strlen( pw->pw_name );
 248         attr_merge( e, "uid", vals );   /* required by uidObject */
 249         attr_merge( e, "cn", vals );    /* required by person */
 250         attr_merge( e, "sn", vals );    /* required by person */
 251
 252 #ifdef HAVE_PW_GECOS
 253         /*
 254          * if gecos is present, add it as a cn. first process it
 255          * according to standard BSD usage. If the processed cn has
 256          * a space, use the tail as the surname.
 257          */
 258         if (pw->pw_gecos[0]) {
 259                 char *s;
 260
 261                 val.bv_val = pw->pw_gecos;
 262                 val.bv_len = strlen(val.bv_val);
 263                 attr_merge(e, "description", vals);
 264
 265                 s = strchr(val.bv_val, ',');
 266                 if (s)
 267                         *s = '\0';
 268                 s = strchr(val.bv_val, '&');
 269                 if (s) {
 270                         int i = s - val.bv_val;
 271                         strncpy(buf, val.bv_val, i);
 272                         s = buf+i;
 273                         strcpy(s, pw->pw_name);
 274                         *s = TOUPPER(*s);
 275                         strcat(s, val.bv_val+i+1);
 276                         val.bv_val = buf;
 277                 }
 278                 val.bv_len = strlen(val.bv_val);
 279                 if ( strcmp( val.bv_val, pw->pw_name ))
 280                         attr_merge( e, "cn", vals );
 281                 if ( (s=strrchr(val.bv_val, ' '))) {
 282                         val.bv_val = s + 1;
 283                         val.bv_len = strlen(val.bv_val);
 284                         attr_merge(e, "sn", vals);
 285                 }
 286         }
 287 #endif
 288
 289         /* objectclasses should be configuratable items */
 290         val.bv_val = "person";
 291         val.bv_len = strlen( val.bv_val );
 292         attr_merge( e, "objectclass", vals );
 293
 294         val.bv_val = "uidObject";
 295         val.bv_len = strlen( val.bv_val );
 296         attr_merge( e, "objectclass", vals );
 297         return( e );
 298 }