git.sur5r.net Git - openldap/blob - contrib/slapd-modules/nssov/nssov.c

   1 /* nssov.c - nss-ldap overlay for slapd */
   2 /* $OpenLDAP$ */
   3 /*
   4  * Copyright 2008 by Howard Chu, Symas Corp.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted only as authorized by the OpenLDAP
   9  * Public License.
  10  *
  11  * A copy of this license is available in the file LICENSE in the
  12  * top-level directory of the distribution or, alternatively, at
  13  * <http://www.OpenLDAP.org/license.html>.
  14  */
  15 /*
  16  * This code references portions of the nss-ldapd package
  17  * written by Arthur de Jong. The nss-ldapd code was forked
  18  * from the nss-ldap library written by Luke Howard.
  19  */
  20
  21 #include "nssov.h"
  22
  23 #ifndef SLAPD_OVER_NSSOV
  24 #define SLAPD_OVER_NSSOV SLAPD_MOD_DYNAMIC
  25 #endif
  26
  27 #include "../slapd/config.h"    /* not nss-ldapd config.h */
  28
  29 #include "lutil.h"
  30
  31 #include <ac/errno.h>
  32 #include <ac/unistd.h>
  33 #include <fcntl.h>
  34 #include <sys/stat.h>
  35
  36 /* buffer sizes for I/O */
  37 #define READBUFFER_MINSIZE 32
  38 #define READBUFFER_MAXSIZE 64
  39 #define WRITEBUFFER_MINSIZE 64
  40 #define WRITEBUFFER_MAXSIZE 64*1024
  41
  42 /* Find the given attribute's value in the RDN of the DN */
  43 int nssov_find_rdnval(struct berval *dn, AttributeDescription *ad, struct berval *value)
  44 {
  45         struct berval rdn;
  46         char *next;
  47
  48         BER_BVZERO(value);
  49         dnRdn( dn, &rdn );
  50         do {
  51                 next = ber_bvchr( &rdn, '+' );
  52                 if ( rdn.bv_val[ad->ad_cname.bv_len] == '=' &&
  53                         !ber_bvcmp( &rdn, &ad->ad_cname )) {
  54                         if ( next )
  55                                 rdn.bv_len = next - rdn.bv_val;
  56                         value->bv_val = rdn.bv_val + ad->ad_cname.bv_len + 1;
  57                         value->bv_len = rdn.bv_len - ad->ad_cname.bv_len - 1;
  58                         break;
  59                 }
  60                 if ( !next )
  61                         break;
  62                 next++;
  63                 rdn.bv_len -= next - rdn.bv_val;
  64                 rdn.bv_val = next;
  65         } while (1);
  66 }
  67
  68 /* create a search filter using a name that requires escaping */
  69 int nssov_filter_byname(nssov_mapinfo *mi,int key,struct berval *name,struct berval *buf)
  70 {
  71         char buf2[1024];
  72         struct berval bv2 = {sizeof(buf2),buf2};
  73
  74         /* escape attribute */
  75         if (nssov_escape(name,&bv2))
  76                 return -1;
  77         /* build filter */
  78         if (bv2.bv_len + mi->mi_filter.bv_len + mi->mi_attrs[key].an_desc->ad_cname.bv_len + 6 >
  79                 buf->bv_len )
  80                 return -1;
  81         buf->bv_len = snprintf(buf->bv_val, buf->bv_len, "(&%s(%s=%s))",
  82                 mi->mi_filter.bv_val, mi->mi_attrs[key].an_desc->ad_cname.bv_val,
  83                 bv2.bv_val );
  84         return 0;
  85 }
  86
  87 /* create a search filter using a string converted from an int */
  88 int nssov_filter_byid(nssov_mapinfo *mi,int key,struct berval *id,struct berval *buf)
  89 {
  90         /* build filter */
  91         if (id->bv_len + mi->mi_filter.bv_len + mi->mi_attrs[key].an_desc->ad_cname.bv_len + 6 >
  92                 buf->bv_len )
  93                 return -1;
  94         buf->bv_len = snprintf(buf->bv_val, buf->bv_len, "(&%s(%s=%s))",
  95                 mi->mi_filter.bv_val, mi->mi_attrs[key].an_desc->ad_cname.bv_val,
  96                 id->bv_val );
  97         return 0;
  98 }
  99
 100 void get_userpassword(struct berval *attr,struct berval *pw)
 101 {
 102         int i;
 103         /* go over the entries and return the remainder of the value if it
 104                  starts with {crypt} or crypt$ */
 105         for (i=0;!BER_BVISNULL(&attr[i]);i++)
 106         {
 107                 if (strncasecmp(attr[i].bv_val,"{crypt}",7)==0) {
 108                         pw->bv_val = attr[i].bv_val + 7;
 109                         pw->bv_len = attr[i].bv_len - 7;
 110                         return;
 111                 }
 112                 if (strncasecmp(attr[i].bv_val,"crypt$",6)==0) {
 113                         pw->bv_val = attr[i].bv_val + 6;
 114                         pw->bv_len = attr[i].bv_len - 6;
 115                         return;
 116                 }
 117         }
 118         /* just return the first value completely */
 119         *pw = *attr;
 120         /* TODO: support more password formats e.g. SMD5
 121                 (which is $1$ but in a different format)
 122                 (any code for this is more than welcome) */
 123 }
 124
 125 /* this writes a single address to the stream */
 126 int write_address(TFILE *fp,struct berval *addr)
 127 {
 128         int32_t tmpint32;
 129         struct in_addr ipv4addr;
 130         struct in6_addr ipv6addr;
 131         /* try to parse the address as IPv4 first, fall back to IPv6 */
 132         if (inet_pton(AF_INET,addr->bv_val,&ipv4addr)>0)
 133         {
 134                 /* write address type */
 135                 WRITE_INT32(fp,AF_INET);
 136                 /* write the address length */
 137                 WRITE_INT32(fp,sizeof(struct in_addr));
 138                 /* write the address itself (in network byte order) */
 139                 WRITE_TYPE(fp,ipv4addr,struct in_addr);
 140         }
 141         else if (inet_pton(AF_INET6,addr->bv_val,&ipv6addr)>0)
 142         {
 143                 /* write address type */
 144                 WRITE_INT32(fp,AF_INET6);
 145                 /* write the address length */
 146                 WRITE_INT32(fp,sizeof(struct in6_addr));
 147                 /* write the address itself (in network byte order) */
 148                 WRITE_TYPE(fp,ipv6addr,struct in6_addr);
 149         }
 150         else
 151         {
 152                 /* failure, log but write simple invalid address
 153                          (otherwise the address list is messed up) */
 154                 /* TODO: have error message in correct format */
 155                 Debug(LDAP_DEBUG_ANY,"nssov: unparseable address: %s",addr->bv_val,0,0);
 156                 /* write an illegal address type */
 157                 WRITE_INT32(fp,-1);
 158                 /* write an empty address */
 159                 WRITE_INT32(fp,0);
 160         }
 161         /* we're done */
 162         return 0;
 163 }
 164
 165 int read_address(TFILE *fp,char *addr,int *addrlen,int *af)
 166 {
 167         int32_t tmpint32;
 168         int len;
 169         /* read address family */
 170         READ_INT32(fp,*af);
 171         if ((*af!=AF_INET)&&(*af!=AF_INET6))
 172         {
 173                 Debug(LDAP_DEBUG_ANY,"nssov: incorrect address family specified: %d",*af,0,0);
 174                 return -1;
 175         }
 176         /* read address length */
 177         READ_INT32(fp,len);
 178         if ((len>*addrlen)||(len<=0))
 179         {
 180                 Debug(LDAP_DEBUG_ANY,"nssov: address length incorrect: %d",len,0,0);
 181                 return -1;
 182         }
 183         *addrlen=len;
 184         /* read address */
 185         READ(fp,addr,len);
 186         /* we're done */
 187         return 0;
 188 }
 189
 190 int nssov_escape(struct berval *src,struct berval *dst)
 191 {
 192         size_t pos=0;
 193         int i;
 194         /* go over all characters in source string */
 195         for (i=0;i<src->bv_len;i++)
 196         {
 197                 /* check if char will fit */
 198                 if (pos>=(dst->bv_len-4))
 199                         return -1;
 200                 /* do escaping for some characters */
 201                 switch (src->bv_val[i])
 202                 {
 203                         case '*':
 204                                 strcpy(dst->bv_val+pos,"\\2a");
 205                                 pos+=3;
 206                                 break;
 207                         case '(':
 208                                 strcpy(dst->bv_val+pos,"\\28");
 209                                 pos+=3;
 210                                 break;
 211                         case ')':
 212                                 strcpy(dst->bv_val+pos,"\\29");
 213                                 pos+=3;
 214                                 break;
 215                         case '\\':
 216                                 strcpy(dst->bv_val+pos,"\\5c");
 217                                 pos+=3;
 218                                 break;
 219                         default:
 220                                 /* just copy character */
 221                                 dst->bv_val[pos++]=src->bv_val[i];
 222                                 break;
 223                 }
 224         }
 225         /* terminate destination string */
 226         dst->bv_val[pos]='\0';
 227         dst->bv_len = pos;
 228         return 0;
 229 }
 230
 231 /* read the version information and action from the stream
 232    this function returns the read action in location pointer to by action */
 233 static int read_header(TFILE *fp,int32_t *action)
 234 {
 235   int32_t tmpint32;
 236   /* read the protocol version */
 237   READ_TYPE(fp,tmpint32,int32_t);
 238   if (tmpint32 != (int32_t)NSLCD_VERSION)
 239   {
 240     Debug( LDAP_DEBUG_TRACE,"nssov: wrong nslcd version id (%d)",(int)tmpint32,0,0);
 241     return -1;
 242   }
 243   /* read the request type */
 244   READ(fp,action,sizeof(int32_t));
 245   return 0;
 246 }
 247
 248 /* read a request message, returns <0 in case of errors,
 249    this function closes the socket */
 250 static void handleconnection(nssov_info *ni,int sock,Operation *op)
 251 {
 252   TFILE *fp;
 253   int32_t action;
 254   struct timeval readtimeout,writetimeout;
 255   uid_t uid;
 256   gid_t gid;
 257   char authid[sizeof("gidNumber=4294967295+uidNumber=424967295,cn=peercred,cn=external,cn=auth")];
 258
 259   /* log connection */
 260   if (lutil_getpeereid(sock,&uid,&gid))
 261     Debug( LDAP_DEBUG_TRACE,"nssov: connection from unknown client: %s",strerror(errno),0,0);
 262   else
 263     Debug( LDAP_DEBUG_TRACE,"nssov: connection from uid=%d gid=%d",
 264                       (int)uid,(int)gid,0);
 265
 266   /* Should do authid mapping too */
 267   op->o_dn.bv_len = sprintf(authid,"gidNumber=%d+uidNumber=%d,cn=peercred,cn=external,cn=auth",
 268         (int)uid, (int)gid );
 269   op->o_dn.bv_val = authid;
 270   op->o_ndn = op->o_dn;
 271
 272   /* set the timeouts */
 273   readtimeout.tv_sec=0; /* clients should send their request quickly */
 274   readtimeout.tv_usec=500000;
 275   writetimeout.tv_sec=5; /* clients could be taking some time to process the results */
 276   writetimeout.tv_usec=0;
 277   /* create a stream object */
 278   if ((fp=tio_fdopen(sock,&readtimeout,&writetimeout,
 279                      READBUFFER_MINSIZE,READBUFFER_MAXSIZE,
 280                      WRITEBUFFER_MINSIZE,WRITEBUFFER_MAXSIZE))==NULL)
 281   {
 282     Debug( LDAP_DEBUG_ANY,"nssov: cannot create stream for writing: %s",strerror(errno),0,0);
 283     (void)close(sock);
 284     return;
 285   }
 286   /* read request */
 287   if (read_header(fp,&action))
 288   {
 289     (void)tio_close(fp);
 290     return;
 291   }
 292   /* handle request */
 293   switch (action)
 294   {
 295     case NSLCD_ACTION_ALIAS_BYNAME:     (void)nssov_alias_byname(ni,fp,op); break;
 296     case NSLCD_ACTION_ALIAS_ALL:        (void)nssov_alias_all(ni,fp,op); break;
 297     case NSLCD_ACTION_ETHER_BYNAME:     (void)nssov_ether_byname(ni,fp,op); break;
 298     case NSLCD_ACTION_ETHER_BYETHER:    (void)nssov_ether_byether(ni,fp,op); break;
 299     case NSLCD_ACTION_ETHER_ALL:        (void)nssov_ether_all(ni,fp,op); break;
 300     case NSLCD_ACTION_GROUP_BYNAME:     (void)nssov_group_byname(ni,fp,op); break;
 301     case NSLCD_ACTION_GROUP_BYGID:      (void)nssov_group_bygid(ni,fp,op); break;
 302     case NSLCD_ACTION_GROUP_BYMEMBER:   (void)nssov_group_bymember(ni,fp,op); break;
 303     case NSLCD_ACTION_GROUP_ALL:        (void)nssov_group_all(ni,fp,op); break;
 304     case NSLCD_ACTION_HOST_BYNAME:      (void)nssov_host_byname(ni,fp,op); break;
 305     case NSLCD_ACTION_HOST_BYADDR:      (void)nssov_host_byaddr(ni,fp,op); break;
 306     case NSLCD_ACTION_HOST_ALL:         (void)nssov_host_all(ni,fp,op); break;
 307     case NSLCD_ACTION_NETGROUP_BYNAME:  (void)nssov_netgroup_byname(ni,fp,op); break;
 308     case NSLCD_ACTION_NETWORK_BYNAME:   (void)nssov_network_byname(ni,fp,op); break;
 309     case NSLCD_ACTION_NETWORK_BYADDR:   (void)nssov_network_byaddr(ni,fp,op); break;
 310     case NSLCD_ACTION_NETWORK_ALL:      (void)nssov_network_all(ni,fp,op); break;
 311     case NSLCD_ACTION_PASSWD_BYNAME:    (void)nssov_passwd_byname(ni,fp,op); break;
 312     case NSLCD_ACTION_PASSWD_BYUID:     (void)nssov_passwd_byuid(ni,fp,op); break;
 313     case NSLCD_ACTION_PASSWD_ALL:       (void)nssov_passwd_all(ni,fp,op); break;
 314     case NSLCD_ACTION_PROTOCOL_BYNAME:  (void)nssov_protocol_byname(ni,fp,op); break;
 315     case NSLCD_ACTION_PROTOCOL_BYNUMBER:(void)nssov_protocol_bynumber(ni,fp,op); break;
 316     case NSLCD_ACTION_PROTOCOL_ALL:     (void)nssov_protocol_all(ni,fp,op); break;
 317     case NSLCD_ACTION_RPC_BYNAME:       (void)nssov_rpc_byname(ni,fp,op); break;
 318     case NSLCD_ACTION_RPC_BYNUMBER:     (void)nssov_rpc_bynumber(ni,fp,op); break;
 319     case NSLCD_ACTION_RPC_ALL:          (void)nssov_rpc_all(ni,fp,op); break;
 320     case NSLCD_ACTION_SERVICE_BYNAME:   (void)nssov_service_byname(ni,fp,op); break;
 321     case NSLCD_ACTION_SERVICE_BYNUMBER: (void)nssov_service_bynumber(ni,fp,op); break;
 322     case NSLCD_ACTION_SERVICE_ALL:      (void)nssov_service_all(ni,fp,op); break;
 323     case NSLCD_ACTION_SHADOW_BYNAME:    if (uid==0) (void)nssov_shadow_byname(ni,fp,op); break;
 324     case NSLCD_ACTION_SHADOW_ALL:       if (uid==0) (void)nssov_shadow_all(ni,fp,op); break;
 325     default:
 326       Debug( LDAP_DEBUG_ANY,"nssov: invalid request id: %d",(int)action,0,0);
 327       break;
 328   }
 329   /* we're done with the request */
 330   (void)tio_close(fp);
 331   return;
 332 }
 333
 334 /* accept a connection on the socket */
 335 static void *acceptconn(void *ctx, void *arg)
 336 {
 337         nssov_info *ni = arg;
 338         Connection conn = {0};
 339         OperationBuffer opbuf;
 340         Operation *op;
 341         int csock;
 342
 343         if ( slapd_shutdown )
 344                 return NULL;
 345
 346         {
 347                 struct sockaddr_storage addr;
 348                 socklen_t alen;
 349                 int j;
 350
 351                 /* accept a new connection */
 352                 alen=(socklen_t)sizeof(struct sockaddr_storage);
 353                 csock=accept(ni->ni_socket,(struct sockaddr *)&addr,&alen);
 354                 connection_client_enable(ni->ni_conn);
 355                 if (csock<0)
 356                 {
 357                         if ((errno==EINTR)||(errno==EAGAIN)||(errno==EWOULDBLOCK))
 358                         {
 359                                 Debug( LDAP_DEBUG_TRACE,"nssov: accept() failed (ignored): %s",strerror(errno),0,0);
 360                                 return;
 361                         }
 362                         Debug( LDAP_DEBUG_ANY,"nssov: accept() failed: %s",strerror(errno),0,0);
 363                         return;
 364                 }
 365                 /* make sure O_NONBLOCK is not inherited */
 366                 if ((j=fcntl(csock,F_GETFL,0))<0)
 367                 {
 368                         Debug( LDAP_DEBUG_ANY,"nssov: fcntl(F_GETFL) failed: %s",strerror(errno),0,0);
 369                         if (close(csock))
 370                                 Debug( LDAP_DEBUG_ANY,"nssov: problem closing socket: %s",strerror(errno),0,0);
 371                         return;
 372                 }
 373                 if (fcntl(csock,F_SETFL,j&~O_NONBLOCK)<0)
 374                 {
 375                         Debug( LDAP_DEBUG_ANY,"nssov: fcntl(F_SETFL,~O_NONBLOCK) failed: %s",strerror(errno),0,0);
 376                         if (close(csock))
 377                                 Debug( LDAP_DEBUG_ANY,"nssov: problem closing socket: %s",strerror(errno),0,0);
 378                         return;
 379                 }
 380         }
 381         connection_fake_init( &conn, &opbuf, ctx );
 382         op=&opbuf.ob_op;
 383         op->o_bd = ni->ni_db;
 384         op->o_tag = LDAP_REQ_SEARCH;
 385
 386         /* handle the connection */
 387         handleconnection(ni,csock,op);
 388 }
 389
 390 static slap_verbmasks nss_svcs[] = {
 391         { BER_BVC("alias"), NM_alias },
 392         { BER_BVC("ether"), NM_ether },
 393         { BER_BVC("group"), NM_group },
 394         { BER_BVC("host"), NM_host },
 395         { BER_BVC("netgroup"), NM_netgroup },
 396         { BER_BVC("network"), NM_network },
 397         { BER_BVC("passwd"), NM_passwd },
 398         { BER_BVC("protocol"), NM_protocol },
 399         { BER_BVC("rpc"), NM_rpc },
 400         { BER_BVC("service"), NM_service },
 401         { BER_BVC("shadow"), NM_shadow },
 402         { BER_BVNULL, 0 }
 403 };
 404
 405 enum {
 406         NSS_SSD=1,
 407         NSS_MAP
 408 };
 409
 410 static ConfigDriver nss_cf_gen;
 411
 412 static ConfigTable nsscfg[] = {
 413         { "nssov-ssd", "service> <url", 3, 3, 0, ARG_MAGIC|NSS_SSD,
 414                 nss_cf_gen, "(OLcfgCtAt:3.1 NAME 'olcNssSsd' "
 415                         "DESC 'URL for searches in a given service' "
 416                         "EQUALITY caseIgnoreMatch "
 417                         "SYNTAX OMsDirectoryString )", NULL, NULL },
 418         { "nssov-map", "service> <orig> <new", 4, 4, 0, ARG_MAGIC|NSS_MAP,
 419                 nss_cf_gen, "(OLcfgCtAt:3.2 NAME 'olcNssMap' "
 420                         "DESC 'Map <service> lookups of <orig> attr to <new> attr' "
 421                         "EQUALITY caseIgnoreMatch "
 422                         "SYNTAX OMsDirectoryString )", NULL, NULL },
 423         { NULL, NULL, 0,0,0, ARG_IGNORED }
 424 };
 425
 426 static ConfigOCs nssocs[] = {
 427         { "( OLcfgCtOc:3.1 "
 428                 "NAME 'olcNssOvConfig' "
 429                 "DESC 'NSS lookup configuration' "
 430                 "SUP olcOverlayConfig "
 431                 "MAY ( olcNssSsd $ olcNssMap ) )",
 432                 Cft_Overlay, nsscfg },
 433         { NULL, 0, NULL }
 434 };
 435
 436 static int
 437 nss_cf_gen(ConfigArgs *c)
 438 {
 439         slap_overinst *on = (slap_overinst *)c->bi;
 440         nssov_info *ni = on->on_bi.bi_private;
 441         nssov_mapinfo *mi;
 442         int i, j, rc = 0;
 443
 444         if ( c->op == SLAP_CONFIG_EMIT ) {
 445                 switch(c->type) {
 446                 case NSS_SSD:
 447                         rc = 1;
 448                         for (i=NM_alias;i<NM_NONE;i++) {
 449                                 struct berval scope;
 450                                 struct berval ssd;
 451                                 struct berval base;
 452
 453                                 mi = &ni->ni_maps[i];
 454
 455                                 /* ignore all-default services */
 456                                 if ( mi->mi_scope == LDAP_SCOPE_DEFAULT &&
 457                                         bvmatch( &mi->mi_filter, &mi->mi_filter0 ) &&
 458                                         BER_BVISNULL( &mi->mi_base ))
 459                                         continue;
 460
 461                                 if ( BER_BVISNULL( &mi->mi_base ))
 462                                         base = ni->ni_db->be_nsuffix[0];
 463                                 else
 464                                         base = mi->mi_base;
 465                                 ldap_pvt_scope2bv(mi->mi_scope == LDAP_SCOPE_DEFAULT ?
 466                                         LDAP_SCOPE_SUBTREE : mi->mi_scope, &scope);
 467                                 ssd.bv_len = STRLENOF(" ldap:///???") + nss_svcs[i].word.bv_len +
 468                                         base.bv_len + scope.bv_len + mi->mi_filter.bv_len;
 469                                 ssd.bv_val = ch_malloc( ssd.bv_len + 1 );
 470                                 sprintf(ssd.bv_val, "%s ldap:///%s??%s?%s", nss_svcs[i].word.bv_val,
 471                                         base.bv_val, scope.bv_val, mi->mi_filter.bv_val );
 472                                 ber_bvarray_add( &c->rvalue_vals, &ssd );
 473                                 rc = 0;
 474                         }
 475                         break;
 476                 case NSS_MAP:
 477                         rc = 1;
 478                         for (i=NM_alias;i<NM_NONE;i++) {
 479
 480                                 mi = &ni->ni_maps[i];
 481                                 for (j=0;!BER_BVISNULL(&mi->mi_attrkeys[j]);j++) {
 482                                         if ( ber_bvstrcasecmp(&mi->mi_attrkeys[j],
 483                                                 &mi->mi_attrs[j].an_name)) {
 484                                                 struct berval map;
 485
 486                                                 map.bv_len = nss_svcs[i].word.bv_len +
 487                                                         mi->mi_attrkeys[j].bv_len +
 488                                                         mi->mi_attrs[j].an_desc->ad_cname.bv_len + 2;
 489                                                 map.bv_val = ch_malloc(map.bv_len + 1);
 490                                                 sprintf(map.bv_val, "%s %s %s", nss_svcs[i].word.bv_val,
 491                                                         mi->mi_attrkeys[j].bv_val, mi->mi_attrs[j].an_desc->ad_cname.bv_val );
 492                                                 ber_bvarray_add( &c->rvalue_vals, &map );
 493                                                 rc = 0;
 494                                         }
 495                                 }
 496                         }
 497                         break;
 498                 }
 499                 return rc;
 500         } else if ( c->op == LDAP_MOD_DELETE ) {
 501                 return 1;
 502         }
 503         switch( c->type ) {
 504         case NSS_SSD: {
 505                 LDAPURLDesc *lud;
 506
 507                 i = verb_to_mask(c->argv[1], nss_svcs);
 508                 if ( i == NM_NONE )
 509                         return 1;
 510
 511                 mi = &ni->ni_maps[i];
 512                 rc = ldap_url_parse(c->argv[2], &lud);
 513                 if ( rc )
 514                         return 1;
 515                 do {
 516                         struct berval base;
 517                         /* Must be LDAP scheme */
 518                         if (strcasecmp(lud->lud_scheme,"ldap")) {
 519                                 rc = 1;
 520                                 break;
 521                         }
 522                         /* Host part, attrs, and extensions must be empty */
 523                         if (( lud->lud_host && *lud->lud_host ) ||
 524                                 lud->lud_attrs || lud->lud_exts ) {
 525                                 rc = 1;
 526                                 break;
 527                         }
 528                         ber_str2bv( lud->lud_dn,0,0,&base);
 529                         rc = dnNormalize( 0,NULL,NULL,&base,&mi->mi_base,NULL);
 530                         if ( rc )
 531                                 break;
 532                         if ( lud->lud_filter ) {
 533                                 /* steal this */
 534                                 ber_str2bv( lud->lud_filter,0,0,&mi->mi_filter);
 535                                 lud->lud_filter = NULL;
 536                         }
 537                         mi->mi_scope = lud->lud_scope;
 538                 } while(0);
 539                 ldap_free_urldesc( lud );
 540                 }
 541                 break;
 542         case NSS_MAP:
 543                 i = verb_to_mask(c->argv[1], nss_svcs);
 544                 if ( i == NM_NONE )
 545                         return 1;
 546                 rc = 1;
 547                 mi = &ni->ni_maps[i];
 548                 for (j=0; !BER_BVISNULL(&mi->mi_attrkeys[j]); j++) {
 549                         if (!strcasecmp(c->argv[2],mi->mi_attrkeys[j].bv_val)) {
 550                                 AttributeDescription *ad = NULL;
 551                                 const char *text;
 552                                 rc = slap_str2ad( c->argv[3], &ad, &text);
 553                                 if ( rc == 0 ) {
 554                                         mi->mi_attrs[j].an_desc = ad;
 555                                         mi->mi_attrs[j].an_name = ad->ad_cname;
 556                                 }
 557                                 break;
 558                         }
 559                 }
 560                 break;
 561         }
 562         return rc;
 563 }
 564
 565 static int
 566 nssov_db_init(
 567         BackendDB *be,
 568         ConfigReply *cr )
 569 {
 570         slap_overinst *on = (slap_overinst *)be->bd_info;
 571         nssov_info *ni;
 572         nssov_mapinfo *mi;
 573         int i, j;
 574
 575         ni = ch_malloc( sizeof(nssov_info) );
 576         on->on_bi.bi_private = ni;
 577
 578         /* set up map keys */
 579         nssov_alias_init(ni);
 580         nssov_ether_init(ni);
 581         nssov_group_init(ni);
 582         nssov_host_init(ni);
 583         nssov_netgroup_init(ni);
 584         nssov_network_init(ni);
 585         nssov_passwd_init(ni);
 586         nssov_protocol_init(ni);
 587         nssov_rpc_init(ni);
 588         nssov_service_init(ni);
 589         nssov_shadow_init(ni);
 590
 591         ni->ni_db = be->bd_self;
 592
 593         return 0;
 594 }
 595
 596 static int
 597 nssov_db_destroy(
 598         BackendDB *be,
 599         ConfigReply *cr )
 600 {
 601 }
 602
 603 static int
 604 nssov_db_open(
 605         BackendDB *be,
 606         ConfigReply *cr )
 607 {
 608         slap_overinst *on = (slap_overinst *)be->bd_info;
 609         nssov_info *ni = on->on_bi.bi_private;
 610         nssov_mapinfo *mi;
 611
 612         int i, sock;
 613         struct sockaddr_un addr;
 614
 615         /* Set default bases */
 616         for (i=0; i<NM_NONE; i++) {
 617                 if ( BER_BVISNULL( &ni->ni_maps[i].mi_base )) {
 618                         ber_dupbv( &ni->ni_maps[i].mi_base, &be->be_nsuffix[0] );
 619                 }
 620                 if ( ni->ni_maps[i].mi_scope == LDAP_SCOPE_DEFAULT )
 621                         ni->ni_maps[i].mi_scope = LDAP_SCOPE_SUBTREE;
 622         }
 623         /* validate attribute maps */
 624         mi = ni->ni_maps;
 625         for ( i=0; i<NM_NONE; i++,mi++) {
 626                 const char *text;
 627                 int j;
 628                 for (j=0; !BER_BVISNULL(&mi->mi_attrkeys[j]); j++) {
 629                         /* skip attrs we already validated */
 630                         if ( mi->mi_attrs[j].an_desc ) continue;
 631                         if ( slap_bv2ad( &mi->mi_attrs[j].an_name,
 632                                 &mi->mi_attrs[j].an_desc, &text )) {
 633                                 Debug(LDAP_DEBUG_ANY,"nssov: invalid attr \"%s\": %s\n",
 634                                         mi->mi_attrs[j].an_name.bv_val, text, 0 );
 635                                 return -1;
 636                         }
 637                 }
 638                 BER_BVZERO(&mi->mi_attrs[j].an_name);
 639                 mi->mi_attrs[j].an_desc = NULL;
 640         }
 641
 642         if ( slapMode & SLAP_SERVER_MODE ) {
 643                 /* create a socket */
 644                 if ( (sock=socket(PF_UNIX,SOCK_STREAM,0))<0 )
 645                 {
 646                         Debug(LDAP_DEBUG_ANY,"nssov: cannot create socket: %s",strerror(errno),0,0);
 647                         return -1;
 648                 }
 649                 /* remove existing named socket */
 650                 if (unlink(NSLCD_SOCKET)<0)
 651                 {
 652                         Debug( LDAP_DEBUG_TRACE,"nssov: unlink() of "NSLCD_SOCKET" failed (ignored): %s",
 653                                                         strerror(errno),0,0);
 654                 }
 655                 /* create socket address structure */
 656                 memset(&addr,0,sizeof(struct sockaddr_un));
 657                 addr.sun_family=AF_UNIX;
 658                 strncpy(addr.sun_path,NSLCD_SOCKET,sizeof(addr.sun_path));
 659                 addr.sun_path[sizeof(addr.sun_path)-1]='\0';
 660                 /* bind to the named socket */
 661                 if (bind(sock,(struct sockaddr *)&addr,sizeof(struct sockaddr_un)))
 662                 {
 663                         Debug( LDAP_DEBUG_ANY,"nssov: bind() to "NSLCD_SOCKET" failed: %s",
 664                                                         strerror(errno),0,0);
 665                         if (close(sock))
 666                                 Debug( LDAP_DEBUG_ANY,"nssov: problem closing socket: %s",strerror(errno),0,0);
 667                         return -1;
 668                 }
 669                 /* close the file descriptor on exit */
 670                 if (fcntl(sock,F_SETFD,FD_CLOEXEC)<0)
 671                 {
 672                         Debug( LDAP_DEBUG_ANY,"nssov: fcntl(F_SETFL,O_NONBLOCK) failed: %s",strerror(errno),0,0);
 673                         if (close(sock))
 674                                 Debug( LDAP_DEBUG_ANY,"nssov: problem closing socket: %s",strerror(errno),0,0);
 675                         return -1;
 676                 }
 677                 /* set permissions of socket so anybody can do requests */
 678                 /* Note: we use chmod() here instead of fchmod() because
 679                          fchmod does not work on sockets
 680                          http://www.opengroup.org/onlinepubs/009695399/functions/fchmod.html
 681                          http://lkml.org/lkml/2005/5/16/11 */
 682                 if (chmod(NSLCD_SOCKET,(mode_t)0666))
 683                 {
 684                         Debug( LDAP_DEBUG_ANY,"nssov: chmod(0666) failed: %s",strerror(errno),0,0);
 685                         if (close(sock))
 686                                 Debug( LDAP_DEBUG_ANY,"nssov: problem closing socket: %s",strerror(errno),0,0);
 687                         return -1;
 688                 }
 689                 /* start listening for connections */
 690                 if (listen(sock,SOMAXCONN)<0)
 691                 {
 692                         Debug( LDAP_DEBUG_ANY,"nssov: listen() failed: %s",strerror(errno),0,0);
 693                         if (close(sock))
 694                                 Debug( LDAP_DEBUG_ANY,"nssov: problem closing socket: %s",strerror(errno),0,0);
 695                         return -1;
 696                 }
 697                 ni->ni_socket = sock;
 698                 ni->ni_conn = connection_client_setup( sock, acceptconn, ni );
 699         }
 700
 701         return 0;
 702 }
 703
 704 static int
 705 nssov_db_close(
 706         BackendDB *be,
 707         ConfigReply *cr )
 708 {
 709         slap_overinst *on = (slap_overinst *)be->bd_info;
 710         nssov_info *ni = on->on_bi.bi_private;
 711
 712         /* close socket if it's still in use */
 713         if (ni->ni_socket >= 0);
 714         {
 715                 if (close(ni->ni_socket))
 716                         Debug( LDAP_DEBUG_ANY,"problem closing server socket (ignored): %s",strerror(errno),0,0);
 717                 ni->ni_socket = -1;
 718         }
 719         /* remove existing named socket */
 720         if (unlink(NSLCD_SOCKET)<0)
 721         {
 722                 Debug( LDAP_DEBUG_TRACE,"unlink() of "NSLCD_SOCKET" failed (ignored): %s",
 723                         strerror(errno),0,0);
 724         }
 725 }
 726
 727 static slap_overinst nssov;
 728
 729 int
 730 nssov_initialize( void )
 731 {
 732         int rc;
 733
 734         nssov.on_bi.bi_type = "nssov";
 735         nssov.on_bi.bi_db_init = nssov_db_init;
 736         nssov.on_bi.bi_db_destroy = nssov_db_destroy;
 737         nssov.on_bi.bi_db_open = nssov_db_open;
 738         nssov.on_bi.bi_db_close = nssov_db_close;
 739
 740         nssov.on_bi.bi_cf_ocs = nssocs;
 741
 742         rc = config_register_schema( nsscfg, nssocs );
 743         if ( rc ) return rc;
 744
 745         return overlay_register(&nssov);
 746 }
 747
 748 #if SLAPD_OVER_NSSOV == SLAPD_MOD_DYNAMIC
 749 int
 750 init_module( int argc, char *argv[] )
 751 {
 752         return nssov_initialize();
 753 }
 754 #endif