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