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

   1 /* pam.c - pam processing routines */
   2 /* $OpenLDAP$ */
   3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   4  *
   5  * Copyright 2008-2012 The OpenLDAP Foundation.
   6  * Portions Copyright 2008 by Howard Chu, Symas Corp.
   7  * All rights reserved.
   8  *
   9  * Redistribution and use in source and binary forms, with or without
  10  * modification, are permitted only as authorized by the OpenLDAP
  11  * Public License.
  12  *
  13  * A copy of this license is available in the file LICENSE in the
  14  * top-level directory of the distribution or, alternatively, at
  15  * <http://www.OpenLDAP.org/license.html>.
  16  */
  17
  18 #include "nssov.h"
  19 #include "lutil.h"
  20
  21 static int ppolicy_cid;
  22 static AttributeDescription *ad_loginStatus;
  23
  24 struct paminfo {
  25         struct berval uid;
  26         struct berval dn;
  27         struct berval svc;
  28         struct berval pwd;
  29         int authz;
  30         struct berval msg;
  31 };
  32
  33 static int pam_bindcb(
  34         Operation *op, SlapReply *rs)
  35 {
  36         struct paminfo *pi = op->o_callback->sc_private;
  37         LDAPControl *ctrl = ldap_control_find(LDAP_CONTROL_PASSWORDPOLICYRESPONSE,
  38                 rs->sr_ctrls, NULL);
  39         if (ctrl) {
  40                 LDAP *ld;
  41                 ber_int_t expire, grace;
  42                 LDAPPasswordPolicyError error;
  43
  44                 ldap_create(&ld);
  45                 if (ld) {
  46                         int rc = ldap_parse_passwordpolicy_control(ld,ctrl,
  47                                 &expire,&grace,&error);
  48                         if (rc == LDAP_SUCCESS) {
  49                                 if (expire >= 0) {
  50                                         char *unit = "seconds";
  51                                         if (expire > 60) {
  52                                                 expire /= 60;
  53                                                 unit = "minutes";
  54                                         }
  55                                         if (expire > 60) {
  56                                                 expire /= 60;
  57                                                 unit = "hours";
  58                                         }
  59                                         if (expire > 24) {
  60                                                 expire /= 24;
  61                                                 unit = "days";
  62                                         }
  63 #if 0   /* Who warns about expiration so far in advance? */
  64                                         if (expire > 7) {
  65                                                 expire /= 7;
  66                                                 unit = "weeks";
  67                                         }
  68                                         if (expire > 4) {
  69                                                 expire /= 4;
  70                                                 unit = "months";
  71                                         }
  72                                         if (expire > 12) {
  73                                                 expire /= 12;
  74                                                 unit = "years";
  75                                         }
  76 #endif
  77                                         pi->msg.bv_len = sprintf(pi->msg.bv_val,
  78                                                 "\nWARNING: Password expires in %d %s\n", expire, unit);
  79                                 } else if (grace > 0) {
  80                                         pi->msg.bv_len = sprintf(pi->msg.bv_val,
  81                                                 "Password expired; %d grace logins remaining",
  82                                                 grace);
  83                                         pi->authz = NSLCD_PAM_NEW_AUTHTOK_REQD;
  84                                 } else if (error != PP_noError) {
  85                                         ber_str2bv(ldap_passwordpolicy_err2txt(error), 0, 0,
  86                                                 &pi->msg);
  87                                         switch (error) {
  88                                         case PP_passwordExpired:
  89                                                 /* report this during authz */
  90                                                 rs->sr_err = LDAP_SUCCESS;
  91                                                 /* fallthru */
  92                                         case PP_changeAfterReset:
  93                                                 pi->authz = NSLCD_PAM_NEW_AUTHTOK_REQD;
  94                                         }
  95                                 }
  96                         }
  97                         ldap_ld_free(ld,0,NULL,NULL);
  98                 }
  99         }
 100         return LDAP_SUCCESS;
 101 }
 102
 103 static int pam_uid2dn(nssov_info *ni, Operation *op,
 104         struct paminfo *pi)
 105 {
 106         struct berval sdn;
 107
 108         BER_BVZERO(&pi->dn);
 109
 110         if (!isvalidusername(&pi->uid)) {
 111                 Debug(LDAP_DEBUG_ANY,"nssov_pam_uid2dn(%s): invalid user name\n",
 112                         pi->uid.bv_val,0,0);
 113                 return NSLCD_PAM_USER_UNKNOWN;
 114         }
 115
 116         if (ni->ni_pam_opts & NI_PAM_SASL2DN) {
 117                 int hlen = global_host_bv.bv_len;
 118
 119                 /* cn=<service>+uid=<user>,cn=<host>,cn=pam,cn=auth */
 120                 sdn.bv_len = pi->uid.bv_len + pi->svc.bv_len + hlen +
 121                         STRLENOF( "cn=+uid=,cn=,cn=pam,cn=auth" );
 122                 sdn.bv_val = op->o_tmpalloc( sdn.bv_len + 1, op->o_tmpmemctx );
 123                 sprintf(sdn.bv_val, "cn=%s+uid=%s,cn=%s,cn=pam,cn=auth",
 124                         pi->svc.bv_val, pi->uid.bv_val, global_host_bv.bv_val);
 125                 slap_sasl2dn(op, &sdn, &pi->dn, 0);
 126                 op->o_tmpfree( sdn.bv_val, op->o_tmpmemctx );
 127         }
 128
 129         /* If no luck, do a basic uid search */
 130         if (BER_BVISEMPTY(&pi->dn) && (ni->ni_pam_opts & NI_PAM_UID2DN)) {
 131                 nssov_uid2dn(op, ni, &pi->uid, &pi->dn);
 132                 if (!BER_BVISEMPTY(&pi->dn)) {
 133                         sdn = pi->dn;
 134                         dnNormalize( 0, NULL, NULL, &sdn, &pi->dn, op->o_tmpmemctx );
 135                 }
 136         }
 137         if (BER_BVISEMPTY(&pi->dn)) {
 138                 return NSLCD_PAM_USER_UNKNOWN;
 139         }
 140         return 0;
 141 }
 142
 143 int pam_do_bind(nssov_info *ni,TFILE *fp,Operation *op,
 144         struct paminfo *pi)
 145 {
 146         int rc;
 147         slap_callback cb = {0};
 148         SlapReply rs = {REP_RESULT};
 149
 150         pi->msg.bv_val = pi->pwd.bv_val;
 151         pi->msg.bv_len = 0;
 152         pi->authz = NSLCD_PAM_SUCCESS;
 153         BER_BVZERO(&pi->dn);
 154
 155         rc = pam_uid2dn(ni, op, pi);
 156         if (rc) goto finish;
 157
 158         if (BER_BVISEMPTY(&pi->pwd)) {
 159                 rc = NSLCD_PAM_IGNORE;
 160                 goto finish;
 161         }
 162
 163         /* Should only need to do this once at open time, but there's always
 164          * the possibility that ppolicy will get loaded later.
 165          */
 166         if (!ppolicy_cid) {
 167                 rc = slap_find_control_id(LDAP_CONTROL_PASSWORDPOLICYREQUEST,
 168                         &ppolicy_cid);
 169         }
 170         /* of course, 0 is a valid cid, but it won't be ppolicy... */
 171         if (ppolicy_cid) {
 172                 op->o_ctrlflag[ppolicy_cid] = SLAP_CONTROL_NONCRITICAL;
 173         }
 174         cb.sc_response = pam_bindcb;
 175         cb.sc_private = pi;
 176         op->o_callback = &cb;
 177         op->o_dn.bv_val[0] = 0;
 178         op->o_dn.bv_len = 0;
 179         op->o_ndn.bv_val[0] = 0;
 180         op->o_ndn.bv_len = 0;
 181         op->o_tag = LDAP_REQ_BIND;
 182         op->o_protocol = LDAP_VERSION3;
 183         op->orb_method = LDAP_AUTH_SIMPLE;
 184         op->orb_cred = pi->pwd;
 185         op->o_req_dn = pi->dn;
 186         op->o_req_ndn = pi->dn;
 187         slap_op_time( &op->o_time, &op->o_tincr );
 188         rc = op->o_bd->be_bind( op, &rs );
 189         memset(pi->pwd.bv_val,0,pi->pwd.bv_len);
 190         /* quirk: on successful bind, caller has to send result. we need
 191          * to make sure callbacks run.
 192          */
 193         if (rc == LDAP_SUCCESS)
 194                 send_ldap_result(op, &rs);
 195         switch(rs.sr_err) {
 196         case LDAP_SUCCESS: rc = NSLCD_PAM_SUCCESS; break;
 197         case LDAP_INVALID_CREDENTIALS: rc = NSLCD_PAM_AUTH_ERR; break;
 198         default: rc = NSLCD_PAM_AUTH_ERR; break;
 199         }
 200 finish:
 201         return rc;
 202 }
 203
 204 int pam_authc(nssov_info *ni,TFILE *fp,Operation *op)
 205 {
 206         int32_t tmpint32;
 207         int rc;
 208         slap_callback cb = {0};
 209         char dnc[1024];
 210         char uidc[32];
 211         char svcc[256];
 212         char pwdc[256];
 213         struct berval sdn, dn;
 214         struct paminfo pi;
 215
 216
 217         READ_STRING(fp,uidc);
 218         pi.uid.bv_val = uidc;
 219         pi.uid.bv_len = tmpint32;
 220         READ_STRING(fp,dnc);
 221         pi.dn.bv_val = dnc;
 222         pi.dn.bv_len = tmpint32;
 223         READ_STRING(fp,svcc);
 224         pi.svc.bv_val = svcc;
 225         pi.svc.bv_len = tmpint32;
 226         READ_STRING(fp,pwdc);
 227         pi.pwd.bv_val = pwdc;
 228         pi.pwd.bv_len = tmpint32;
 229
 230         Debug(LDAP_DEBUG_TRACE,"nssov_pam_authc(%s)\n",pi.uid.bv_val,0,0);
 231
 232         rc = pam_do_bind(ni, fp, op, &pi);
 233
 234 finish:
 235         WRITE_INT32(fp,NSLCD_VERSION);
 236         WRITE_INT32(fp,NSLCD_ACTION_PAM_AUTHC);
 237         WRITE_INT32(fp,NSLCD_RESULT_BEGIN);
 238         WRITE_BERVAL(fp,&pi.uid);
 239         WRITE_BERVAL(fp,&pi.dn);
 240         WRITE_INT32(fp,rc);
 241         WRITE_INT32(fp,pi.authz);       /* authz */
 242         WRITE_BERVAL(fp,&pi.msg);       /* authzmsg */
 243         return 0;
 244 }
 245
 246 static struct berval grpmsg =
 247         BER_BVC("Access denied by group check");
 248 static struct berval hostmsg =
 249         BER_BVC("Access denied for this host");
 250 static struct berval svcmsg =
 251         BER_BVC("Access denied for this service");
 252 static struct berval uidmsg =
 253         BER_BVC("Access denied by UID check");
 254
 255 static int pam_compare_cb(Operation *op, SlapReply *rs)
 256 {
 257         if (rs->sr_err == LDAP_COMPARE_TRUE)
 258                 op->o_callback->sc_private = (void *)1;
 259         return LDAP_SUCCESS;
 260 }
 261
 262 int pam_authz(nssov_info *ni,TFILE *fp,Operation *op)
 263 {
 264         struct berval dn, uid, svc, ruser, rhost, tty;
 265         struct berval authzmsg = BER_BVNULL;
 266         int32_t tmpint32;
 267         char dnc[1024];
 268         char uidc[32];
 269         char svcc[256];
 270         char ruserc[32];
 271         char rhostc[256];
 272         char ttyc[256];
 273         int rc;
 274         Entry *e = NULL;
 275         Attribute *a;
 276         slap_callback cb = {0};
 277
 278         READ_STRING(fp,uidc);
 279         uid.bv_val = uidc;
 280         uid.bv_len = tmpint32;
 281         READ_STRING(fp,dnc);
 282         dn.bv_val = dnc;
 283         dn.bv_len = tmpint32;
 284         READ_STRING(fp,svcc);
 285         svc.bv_val = svcc;
 286         svc.bv_len = tmpint32;
 287         READ_STRING(fp,ruserc);
 288         ruser.bv_val = ruserc;
 289         ruser.bv_len = tmpint32;
 290         READ_STRING(fp,rhostc);
 291         rhost.bv_val = rhostc;
 292         rhost.bv_len = tmpint32;
 293         READ_STRING(fp,ttyc);
 294         tty.bv_val = ttyc;
 295         tty.bv_len = tmpint32;
 296
 297         Debug(LDAP_DEBUG_TRACE,"nssov_pam_authz(%s)\n",dn.bv_val,0,0);
 298
 299         /* If we didn't do authc, we don't have a DN yet */
 300         if (BER_BVISEMPTY(&dn)) {
 301                 struct paminfo pi;
 302                 pi.uid = uid;
 303                 pi.svc = svc;
 304
 305                 rc = pam_uid2dn(ni, op, &pi);
 306                 if (rc) goto finish;
 307                 dn = pi.dn;
 308         }
 309
 310         /* See if they have access to the host and service */
 311         if ((ni->ni_pam_opts & NI_PAM_HOSTSVC) && nssov_pam_svc_ad) {
 312                 AttributeAssertion ava = ATTRIBUTEASSERTION_INIT;
 313                 struct berval hostdn = BER_BVNULL;
 314                 struct berval odn = op->o_ndn;
 315                 SlapReply rs = {REP_RESULT};
 316                 op->o_dn = dn;
 317                 op->o_ndn = dn;
 318                 {
 319                         nssov_mapinfo *mi = &ni->ni_maps[NM_host];
 320                         char fbuf[1024];
 321                         struct berval filter = {sizeof(fbuf),fbuf};
 322                         SlapReply rs2 = {REP_RESULT};
 323
 324                         /* Lookup the host entry */
 325                         nssov_filter_byname(mi,0,&global_host_bv,&filter);
 326                         cb.sc_private = &hostdn;
 327                         cb.sc_response = nssov_name2dn_cb;
 328                         op->o_callback = &cb;
 329                         op->o_req_dn = mi->mi_base;
 330                         op->o_req_ndn = mi->mi_base;
 331                         op->ors_scope = mi->mi_scope;
 332                         op->ors_filterstr = filter;
 333                         op->ors_filter = str2filter_x(op, filter.bv_val);
 334                         op->ors_attrs = slap_anlist_no_attrs;
 335                         op->ors_tlimit = SLAP_NO_LIMIT;
 336                         op->ors_slimit = 2;
 337                         rc = op->o_bd->be_search(op, &rs2);
 338                         filter_free_x(op, op->ors_filter, 1);
 339
 340                         if (BER_BVISEMPTY(&hostdn) &&
 341                                 !BER_BVISEMPTY(&ni->ni_pam_defhost)) {
 342                                 filter.bv_len = sizeof(fbuf);
 343                                 filter.bv_val = fbuf;
 344                                 rs_reinit(&rs2, REP_RESULT);
 345                                 nssov_filter_byname(mi,0,&ni->ni_pam_defhost,&filter);
 346                                 op->ors_filterstr = filter;
 347                                 op->ors_filter = str2filter_x(op, filter.bv_val);
 348                                 rc = op->o_bd->be_search(op, &rs2);
 349                                 filter_free_x(op, op->ors_filter, 1);
 350                         }
 351
 352                         /* no host entry, no default host -> deny */
 353                         if (BER_BVISEMPTY(&hostdn)) {
 354                                 rc = NSLCD_PAM_PERM_DENIED;
 355                                 authzmsg = hostmsg;
 356                                 goto finish;
 357                         }
 358                 }
 359
 360                 cb.sc_response = pam_compare_cb;
 361                 cb.sc_private = NULL;
 362                 op->o_tag = LDAP_REQ_COMPARE;
 363                 op->o_req_dn = hostdn;
 364                 op->o_req_ndn = hostdn;
 365                 ava.aa_desc = nssov_pam_svc_ad;
 366                 ava.aa_value = svc;
 367                 op->orc_ava = &ava;
 368                 rc = op->o_bd->be_compare( op, &rs );
 369                 if ( cb.sc_private == NULL ) {
 370                         authzmsg = svcmsg;
 371                         rc = NSLCD_PAM_PERM_DENIED;
 372                         goto finish;
 373                 }
 374                 op->o_dn = odn;
 375                 op->o_ndn = odn;
 376         }
 377
 378         /* See if they're a member of the group */
 379         if ((ni->ni_pam_opts & NI_PAM_USERGRP) &&
 380                 !BER_BVISEMPTY(&ni->ni_pam_group_dn) &&
 381                 ni->ni_pam_group_ad) {
 382                 AttributeAssertion ava = ATTRIBUTEASSERTION_INIT;
 383                 SlapReply rs = {REP_RESULT};
 384                 op->o_callback = &cb;
 385                 cb.sc_response = slap_null_cb;
 386                 op->o_tag = LDAP_REQ_COMPARE;
 387                 op->o_req_dn = ni->ni_pam_group_dn;
 388                 op->o_req_ndn = ni->ni_pam_group_dn;
 389                 ava.aa_desc = ni->ni_pam_group_ad;
 390                 ava.aa_value = dn;
 391                 op->orc_ava = &ava;
 392                 rc = op->o_bd->be_compare( op, &rs );
 393                 if ( rs.sr_err != LDAP_COMPARE_TRUE ) {
 394                         authzmsg = grpmsg;
 395                         rc = NSLCD_PAM_PERM_DENIED;
 396                         goto finish;
 397                 }
 398         }
 399
 400         /* We need to check the user's entry for these bits */
 401         if ((ni->ni_pam_opts & (NI_PAM_USERHOST|NI_PAM_USERSVC)) ||
 402                 ni->ni_pam_template_ad ||
 403                 ni->ni_pam_min_uid || ni->ni_pam_max_uid ) {
 404                 rc = be_entry_get_rw( op, &dn, NULL, NULL, 0, &e );
 405                 if (rc != LDAP_SUCCESS) {
 406                         rc = NSLCD_PAM_USER_UNKNOWN;
 407                         goto finish;
 408                 }
 409         }
 410         if ((ni->ni_pam_opts & NI_PAM_USERHOST) && nssov_pam_host_ad) {
 411                 a = attr_find(e->e_attrs, nssov_pam_host_ad);
 412                 if (!a || attr_valfind( a,
 413                         SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH |
 414                         SLAP_MR_VALUE_OF_SYNTAX,
 415                         &global_host_bv, NULL, op->o_tmpmemctx )) {
 416                         rc = NSLCD_PAM_PERM_DENIED;
 417                         authzmsg = hostmsg;
 418                         goto finish;
 419                 }
 420         }
 421         if ((ni->ni_pam_opts & NI_PAM_USERSVC) && nssov_pam_svc_ad) {
 422                 a = attr_find(e->e_attrs, nssov_pam_svc_ad);
 423                 if (!a || attr_valfind( a,
 424                         SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH |
 425                         SLAP_MR_VALUE_OF_SYNTAX,
 426                         &svc, NULL, op->o_tmpmemctx )) {
 427                         rc = NSLCD_PAM_PERM_DENIED;
 428                         authzmsg = svcmsg;
 429                         goto finish;
 430                 }
 431         }
 432
 433 /* from passwd.c */
 434 #define UIDN_KEY        2
 435
 436         if (ni->ni_pam_min_uid || ni->ni_pam_max_uid) {
 437                 int id;
 438                 char *tmp;
 439                 nssov_mapinfo *mi = &ni->ni_maps[NM_passwd];
 440                 a = attr_find(e->e_attrs, mi->mi_attrs[UIDN_KEY].an_desc);
 441                 if (!a) {
 442                         rc = NSLCD_PAM_PERM_DENIED;
 443                         authzmsg = uidmsg;
 444                         goto finish;
 445                 }
 446                 id = (int)strtol(a->a_vals[0].bv_val,&tmp,0);
 447                 if (a->a_vals[0].bv_val[0] == '\0' || *tmp != '\0') {
 448                         rc = NSLCD_PAM_PERM_DENIED;
 449                         authzmsg = uidmsg;
 450                         goto finish;
 451                 }
 452                 if ((ni->ni_pam_min_uid && id < ni->ni_pam_min_uid) ||
 453                         (ni->ni_pam_max_uid && id > ni->ni_pam_max_uid)) {
 454                         rc = NSLCD_PAM_PERM_DENIED;
 455                         authzmsg = uidmsg;
 456                         goto finish;
 457                 }
 458         }
 459
 460         if (ni->ni_pam_template_ad) {
 461                 a = attr_find(e->e_attrs, ni->ni_pam_template_ad);
 462                 if (a)
 463                         uid = a->a_vals[0];
 464                 else if (!BER_BVISEMPTY(&ni->ni_pam_template))
 465                         uid = ni->ni_pam_template;
 466         }
 467         rc = NSLCD_PAM_SUCCESS;
 468
 469 finish:
 470         WRITE_INT32(fp,NSLCD_VERSION);
 471         WRITE_INT32(fp,NSLCD_ACTION_PAM_AUTHZ);
 472         WRITE_INT32(fp,NSLCD_RESULT_BEGIN);
 473         WRITE_BERVAL(fp,&uid);
 474         WRITE_BERVAL(fp,&dn);
 475         WRITE_INT32(fp,rc);
 476         WRITE_BERVAL(fp,&authzmsg);
 477         if (e) {
 478                 be_entry_release_r(op, e);
 479         }
 480         return 0;
 481 }
 482
 483 static int pam_sess(nssov_info *ni,TFILE *fp,Operation *op,int action)
 484 {
 485         struct berval dn, uid, svc, tty, rhost, ruser;
 486         int32_t tmpint32;
 487         char dnc[1024];
 488         char svcc[256];
 489         char uidc[32];
 490         char ttyc[32];
 491         char rhostc[256];
 492         char ruserc[32];
 493         slap_callback cb = {0};
 494         SlapReply rs = {REP_RESULT};
 495         char timebuf[LDAP_LUTIL_GENTIME_BUFSIZE];
 496         struct berval timestamp, bv[2], *nbv;
 497         time_t stamp;
 498         Modifications mod;
 499
 500         READ_STRING(fp,uidc);
 501         uid.bv_val = uidc;
 502         uid.bv_len = tmpint32;
 503         READ_STRING(fp,dnc);
 504         dn.bv_val = dnc;
 505         dn.bv_len = tmpint32;
 506         READ_STRING(fp,svcc);
 507         svc.bv_val = svcc;
 508         svc.bv_len = tmpint32;
 509         READ_STRING(fp,ttyc);
 510         tty.bv_val = ttyc;
 511         tty.bv_len = tmpint32;
 512         READ_STRING(fp,rhostc);
 513         rhost.bv_val = rhostc;
 514         rhost.bv_len = tmpint32;
 515         READ_STRING(fp,ruserc);
 516         ruser.bv_val = ruserc;
 517         ruser.bv_len = tmpint32;
 518         READ_INT32(fp,stamp);
 519
 520         Debug(LDAP_DEBUG_TRACE,"nssov_pam_sess_%c(%s)\n",
 521                 action==NSLCD_ACTION_PAM_SESS_O ? 'o' : 'c', dn.bv_val,0);
 522
 523         if (!dn.bv_len || !ni->ni_pam_sessions) return 0;
 524
 525         {
 526                 int i, found=0;
 527                 for (i=0; !BER_BVISNULL(&ni->ni_pam_sessions[i]); i++) {
 528                         if (ni->ni_pam_sessions[i].bv_len != svc.bv_len)
 529                                 continue;
 530                         if (!strcasecmp(ni->ni_pam_sessions[i].bv_val, svc.bv_val)) {
 531                                 found = 1;
 532                                 break;
 533                         }
 534                 }
 535                 if (!found) return 0;
 536         }
 537
 538         slap_op_time( &op->o_time, &op->o_tincr );
 539         timestamp.bv_len = sizeof(timebuf);
 540         timestamp.bv_val = timebuf;
 541         if (action == NSLCD_ACTION_PAM_SESS_O )
 542                 stamp = op->o_time;
 543         slap_timestamp( &stamp, &timestamp );
 544         bv[0].bv_len = timestamp.bv_len + global_host_bv.bv_len + svc.bv_len +
 545                 tty.bv_len + ruser.bv_len + rhost.bv_len + STRLENOF("    (@)");
 546         bv[0].bv_val = op->o_tmpalloc( bv[0].bv_len+1, op->o_tmpmemctx );
 547         sprintf(bv[0].bv_val, "%s %s %s %s (%s@%s)",
 548                 timestamp.bv_val, global_host_bv.bv_val, svc.bv_val, tty.bv_val,
 549                 ruser.bv_val, rhost.bv_val);
 550
 551         mod.sml_numvals = 1;
 552         mod.sml_values = bv;
 553         BER_BVZERO(&bv[1]);
 554         attr_normalize( ad_loginStatus, bv, &nbv, op->o_tmpmemctx );
 555         mod.sml_nvalues = nbv;
 556         mod.sml_desc = ad_loginStatus;
 557         mod.sml_op = action == NSLCD_ACTION_PAM_SESS_O ? LDAP_MOD_ADD :
 558                 LDAP_MOD_DELETE;
 559         mod.sml_flags = SLAP_MOD_INTERNAL;
 560         mod.sml_next = NULL;
 561
 562         cb.sc_response = slap_null_cb;
 563         op->o_callback = &cb;
 564         op->o_tag = LDAP_REQ_MODIFY;
 565         op->o_dn = op->o_bd->be_rootdn;
 566         op->o_ndn = op->o_bd->be_rootndn;
 567         op->orm_modlist = &mod;
 568         op->orm_no_opattrs = 1;
 569         op->o_req_dn = dn;
 570         op->o_req_ndn = dn;
 571         op->o_bd->be_modify( op, &rs );
 572         if ( mod.sml_next ) {
 573                 slap_mods_free( mod.sml_next, 1 );
 574         }
 575         ber_bvarray_free_x( nbv, op->o_tmpmemctx );
 576
 577         WRITE_INT32(fp,NSLCD_VERSION);
 578         WRITE_INT32(fp,action);
 579         WRITE_INT32(fp,NSLCD_RESULT_BEGIN);
 580         WRITE_INT32(fp,op->o_time);
 581         return 0;
 582 }
 583
 584 int pam_sess_o(nssov_info *ni,TFILE *fp,Operation *op)
 585 {
 586         return pam_sess(ni,fp,op,NSLCD_ACTION_PAM_SESS_O);
 587 }
 588
 589 int pam_sess_c(nssov_info *ni,TFILE *fp,Operation *op)
 590 {
 591         return pam_sess(ni,fp,op,NSLCD_ACTION_PAM_SESS_C);
 592 }
 593
 594 int pam_pwmod(nssov_info *ni,TFILE *fp,Operation *op)
 595 {
 596         struct berval npw;
 597         int32_t tmpint32;
 598         char dnc[1024];
 599         char uidc[32];
 600         char opwc[256];
 601         char npwc[256];
 602         char svcc[256];
 603         struct paminfo pi;
 604         int rc;
 605
 606         READ_STRING(fp,uidc);
 607         pi.uid.bv_val = uidc;
 608         pi.uid.bv_len = tmpint32;
 609         READ_STRING(fp,dnc);
 610         pi.dn.bv_val = dnc;
 611         pi.dn.bv_len = tmpint32;
 612         READ_STRING(fp,svcc);
 613         pi.svc.bv_val = svcc;
 614         pi.svc.bv_len = tmpint32;
 615         READ_STRING(fp,opwc);
 616         pi.pwd.bv_val = opwc;
 617         pi.pwd.bv_len = tmpint32;
 618         READ_STRING(fp,npwc);
 619         npw.bv_val = npwc;
 620         npw.bv_len = tmpint32;
 621
 622         Debug(LDAP_DEBUG_TRACE,"nssov_pam_pwmod(%s), %s\n",
 623                 pi.dn.bv_val,pi.uid.bv_val,0);
 624
 625         BER_BVZERO(&pi.msg);
 626
 627         /* This is a prelim check */
 628         if (BER_BVISEMPTY(&pi.dn)) {
 629                 rc = pam_do_bind(ni,fp,op,&pi);
 630                 if (rc == NSLCD_PAM_IGNORE)
 631                         rc = NSLCD_PAM_SUCCESS;
 632         } else {
 633                 BerElementBuffer berbuf;
 634                 BerElement *ber = (BerElement *)&berbuf;
 635                 struct berval bv;
 636                 SlapReply rs = {REP_RESULT};
 637                 slap_callback cb = {0};
 638
 639                 ber_init_w_nullc(ber, LBER_USE_DER);
 640                 ber_printf(ber, "{");
 641                 if (!BER_BVISEMPTY(&pi.pwd))
 642                         ber_printf(ber, "tO", LDAP_TAG_EXOP_MODIFY_PASSWD_OLD,
 643                                 &pi.pwd);
 644                 if (!BER_BVISEMPTY(&npw))
 645                         ber_printf(ber, "tO", LDAP_TAG_EXOP_MODIFY_PASSWD_NEW,
 646                                 &npw);
 647                 ber_printf(ber, "N}");
 648                 ber_flatten2(ber, &bv, 0);
 649                 op->o_tag = LDAP_REQ_EXTENDED;
 650                 op->ore_reqoid = slap_EXOP_MODIFY_PASSWD;
 651                 op->ore_reqdata = &bv;
 652                 op->o_dn = pi.dn;
 653                 op->o_ndn = pi.dn;
 654                 op->o_callback = &cb;
 655                 op->o_conn->c_authz_backend = op->o_bd;
 656                 cb.sc_response = slap_null_cb;
 657                 op->o_bd = frontendDB;
 658                 rc = op->o_bd->be_extended(op, &rs);
 659                 if (rs.sr_text)
 660                         ber_str2bv(rs.sr_text, 0, 0, &pi.msg);
 661                 if (rc == LDAP_SUCCESS)
 662                         rc = NSLCD_PAM_SUCCESS;
 663                 else
 664                         rc = NSLCD_PAM_PERM_DENIED;
 665         }
 666         WRITE_INT32(fp,NSLCD_VERSION);
 667         WRITE_INT32(fp,NSLCD_ACTION_PAM_PWMOD);
 668         WRITE_INT32(fp,NSLCD_RESULT_BEGIN);
 669         WRITE_BERVAL(fp,&pi.uid);
 670         WRITE_BERVAL(fp,&pi.dn);
 671         WRITE_INT32(fp,rc);
 672         WRITE_BERVAL(fp,&pi.msg);
 673         return 0;
 674 }
 675
 676 int nssov_pam_init()
 677 {
 678         int code = 0;
 679         const char *text;
 680         if (!ad_loginStatus)
 681                 code = slap_str2ad("loginStatus", &ad_loginStatus, &text);
 682
 683         return code;
 684 }