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 2008-2015 The OpenLDAP Foundation.
   6  * Portions Copyright 2008 by Howard Chu, Symas Corp.
   7  * Portions Copyright 2013 by Ted C. Cheng, Symas Corp.
   8  * All rights reserved.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted only as authorized by the OpenLDAP
  12  * Public License.
  13  *
  14  * A copy of this license is available in the file LICENSE in the
  15  * top-level directory of the distribution or, alternatively, at
  16  * <http://www.OpenLDAP.org/license.html>.
  17  */
  18
  19 #include "nssov.h"
  20 #include "lutil.h"
  21
  22 static int ppolicy_cid;
  23 static AttributeDescription *ad_loginStatus;
  24
  25 struct paminfo {
  26         struct berval uid;
  27         struct berval dn;
  28         struct berval svc;
  29         struct berval pwd;
  30         int authz;
  31         struct berval msg;
  32         int ispwdmgr;
  33 };
  34
  35 static int pam_bindcb(
  36         Operation *op, SlapReply *rs)
  37 {
  38         struct paminfo *pi = op->o_callback->sc_private;
  39         LDAPControl *ctrl = ldap_control_find(LDAP_CONTROL_PASSWORDPOLICYRESPONSE,
  40                 rs->sr_ctrls, NULL);
  41         if (ctrl) {
  42                 LDAP *ld;
  43                 ber_int_t expire, grace;
  44                 LDAPPasswordPolicyError error;
  45
  46                 ldap_create(&ld);
  47                 if (ld) {
  48                         int rc = ldap_parse_passwordpolicy_control(ld,ctrl,
  49                                 &expire,&grace,&error);
  50                         if (rc == LDAP_SUCCESS) {
  51                                 if (expire >= 0) {
  52                                         char *unit = "seconds";
  53                                         if (expire > 60) {
  54                                                 expire /= 60;
  55                                                 unit = "minutes";
  56                                         }
  57                                         if (expire > 60) {
  58                                                 expire /= 60;
  59                                                 unit = "hours";
  60                                         }
  61                                         if (expire > 24) {
  62                                                 expire /= 24;
  63                                                 unit = "days";
  64                                         }
  65 #if 0   /* Who warns about expiration so far in advance? */
  66                                         if (expire > 7) {
  67                                                 expire /= 7;
  68                                                 unit = "weeks";
  69                                         }
  70                                         if (expire > 4) {
  71                                                 expire /= 4;
  72                                                 unit = "months";
  73                                         }
  74                                         if (expire > 12) {
  75                                                 expire /= 12;
  76                                                 unit = "years";
  77                                         }
  78 #endif
  79                                         pi->msg.bv_len = sprintf(pi->msg.bv_val,
  80                                                 "\nWARNING: Password expires in %d %s\n", expire, unit);
  81                                 } else if (grace > 0) {
  82                                         pi->msg.bv_len = sprintf(pi->msg.bv_val,
  83                                                 "Password expired; %d grace logins remaining",
  84                                                 grace);
  85                                         pi->authz = NSLCD_PAM_NEW_AUTHTOK_REQD;
  86                                 } else if (error != PP_noError) {
  87                                         ber_str2bv(ldap_passwordpolicy_err2txt(error), 0, 0,
  88                                                 &pi->msg);
  89                                         switch (error) {
  90                                         case PP_passwordExpired:
  91                                                 /* report this during authz */
  92                                                 rs->sr_err = LDAP_SUCCESS;
  93                                                 /* fallthru */
  94                                         case PP_changeAfterReset:
  95                                                 pi->authz = NSLCD_PAM_NEW_AUTHTOK_REQD;
  96                                         }
  97                                 }
  98                         }
  99                         ldap_ld_free(ld,0,NULL,NULL);
 100                 }
 101         }
 102         return LDAP_SUCCESS;
 103 }
 104
 105 static int pam_uid2dn(nssov_info *ni, Operation *op,
 106         struct paminfo *pi)
 107 {
 108         struct berval sdn;
 109
 110         BER_BVZERO(&pi->dn);
 111
 112         if (!isvalidusername(&pi->uid)) {
 113                 Debug(LDAP_DEBUG_ANY,"nssov_pam_uid2dn(%s): invalid user name\n",
 114                         pi->uid.bv_val ? pi->uid.bv_val : "NULL",0,0);
 115                 return NSLCD_PAM_USER_UNKNOWN;
 116         }
 117
 118         if (ni->ni_pam_opts & NI_PAM_SASL2DN) {
 119                 int hlen = global_host_bv.bv_len;
 120
 121                 /* cn=<service>+uid=<user>,cn=<host>,cn=pam,cn=auth */
 122                 sdn.bv_len = pi->uid.bv_len + pi->svc.bv_len + hlen +
 123                         STRLENOF( "cn=+uid=,cn=,cn=pam,cn=auth" );
 124                 sdn.bv_val = op->o_tmpalloc( sdn.bv_len + 1, op->o_tmpmemctx );
 125                 sprintf(sdn.bv_val, "cn=%s+uid=%s,cn=%s,cn=pam,cn=auth",
 126                         pi->svc.bv_val, pi->uid.bv_val, global_host_bv.bv_val);
 127                 slap_sasl2dn(op, &sdn, &pi->dn, 0);
 128                 op->o_tmpfree( sdn.bv_val, op->o_tmpmemctx );
 129         }
 130
 131         /* If no luck, do a basic uid search */
 132         if (BER_BVISEMPTY(&pi->dn) && (ni->ni_pam_opts & NI_PAM_UID2DN)) {
 133                 nssov_uid2dn(op, ni, &pi->uid, &pi->dn);
 134                 if (!BER_BVISEMPTY(&pi->dn)) {
 135                         sdn = pi->dn;
 136                         dnNormalize( 0, NULL, NULL, &sdn, &pi->dn, op->o_tmpmemctx );
 137                 }
 138         }
 139         if (BER_BVISEMPTY(&pi->dn)) {
 140                 return NSLCD_PAM_USER_UNKNOWN;
 141         }
 142         return 0;
 143 }
 144
 145 int pam_do_bind(nssov_info *ni,TFILE *fp,Operation *op,
 146         struct paminfo *pi)
 147 {
 148         int rc;
 149         slap_callback cb = {0};
 150         SlapReply rs = {REP_RESULT};
 151
 152         pi->msg.bv_val = pi->pwd.bv_val;
 153         pi->msg.bv_len = 0;
 154         pi->authz = NSLCD_PAM_SUCCESS;
 155
 156         if (!pi->ispwdmgr) {
 157
 158                 BER_BVZERO(&pi->dn);
 159                 rc = pam_uid2dn(ni, op, pi);
 160                 if (rc) goto finish;
 161
 162                 if (BER_BVISEMPTY(&pi->pwd)) {
 163                         rc = NSLCD_PAM_PERM_DENIED;
 164                         goto finish;
 165                 }
 166
 167                 /* Should only need to do this once at open time, but there's always
 168                  * the possibility that ppolicy will get loaded later.
 169                  */
 170                 if (!ppolicy_cid) {
 171                         rc = slap_find_control_id(LDAP_CONTROL_PASSWORDPOLICYREQUEST,
 172                                 &ppolicy_cid);
 173                 }
 174                 /* of course, 0 is a valid cid, but it won't be ppolicy... */
 175                 if (ppolicy_cid) {
 176                         op->o_ctrlflag[ppolicy_cid] = SLAP_CONTROL_NONCRITICAL;
 177                 }
 178         }
 179
 180         cb.sc_response = pam_bindcb;
 181         cb.sc_private = pi;
 182         op->o_callback = &cb;
 183         op->o_dn.bv_val[0] = 0;
 184         op->o_dn.bv_len = 0;
 185         op->o_ndn.bv_val[0] = 0;
 186         op->o_ndn.bv_len = 0;
 187         op->o_tag = LDAP_REQ_BIND;
 188         op->o_protocol = LDAP_VERSION3;
 189         op->orb_method = LDAP_AUTH_SIMPLE;
 190         op->orb_cred = pi->pwd;
 191         op->o_req_dn = pi->dn;
 192         op->o_req_ndn = pi->dn;
 193         slap_op_time( &op->o_time, &op->o_tincr );
 194         rc = op->o_bd->be_bind( op, &rs );
 195         memset(pi->pwd.bv_val,0,pi->pwd.bv_len);
 196         /* quirk: on successful bind, caller has to send result. we need
 197          * to make sure callbacks run.
 198          */
 199         if (rc == LDAP_SUCCESS)
 200                 send_ldap_result(op, &rs);
 201         switch(rs.sr_err) {
 202         case LDAP_SUCCESS: rc = NSLCD_PAM_SUCCESS; break;
 203         case LDAP_INVALID_CREDENTIALS: rc = NSLCD_PAM_AUTH_ERR; break;
 204         default: rc = NSLCD_PAM_AUTH_ERR; break;
 205         }
 206 finish:
 207         Debug(LDAP_DEBUG_ANY,"pam_do_bind (%s): rc (%d)\n",
 208                 pi->dn.bv_val ? pi->dn.bv_val : "NULL", rc, 0);
 209         return rc;
 210 }
 211
 212 int pam_authc(nssov_info *ni,TFILE *fp,Operation *op)
 213 {
 214         int32_t tmpint32;
 215         int rc;
 216         slap_callback cb = {0};
 217         char dnc[1024];
 218         char uidc[32];
 219         char svcc[256];
 220         char pwdc[256];
 221         struct berval sdn, dn;
 222         struct paminfo pi;
 223
 224
 225         READ_STRING(fp,uidc);
 226         pi.uid.bv_val = uidc;
 227         pi.uid.bv_len = tmpint32;
 228         READ_STRING(fp,dnc);
 229         pi.dn.bv_val = dnc;
 230         pi.dn.bv_len = tmpint32;
 231         READ_STRING(fp,svcc);
 232         pi.svc.bv_val = svcc;
 233         pi.svc.bv_len = tmpint32;
 234         READ_STRING(fp,pwdc);
 235         pi.pwd.bv_val = pwdc;
 236         pi.pwd.bv_len = tmpint32;
 237
 238         Debug(LDAP_DEBUG_TRACE,"nssov_pam_authc(%s)\n",
 239                         pi.uid.bv_val ? pi.uid.bv_val : "NULL",0,0);
 240
 241         pi.ispwdmgr = 0;
 242
 243         /* if service is "passwd" and "nssov-pam-password-prohibit-message */
 244         /* is set, deny the auth request */
 245         if (!strcmp(svcc, "passwd") &&
 246                 !BER_BVISEMPTY(&ni->ni_pam_password_prohibit_message)) {
 247                 Debug(LDAP_DEBUG_TRACE,"nssov_pam_authc(): %s (%s)\n",
 248                         "password_prohibit_message for passwd",
 249                         ni->ni_pam_password_prohibit_message.bv_val,0);
 250                 ber_str2bv(ni->ni_pam_password_prohibit_message.bv_val, 0, 0, &pi.msg);
 251                 pi.authz = NSLCD_PAM_PERM_DENIED;
 252                 rc = NSLCD_PAM_PERM_DENIED;
 253                 goto finish;
 254         }
 255
 256         /* if username is null, pwdmgr password preliminary check */
 257         if (BER_BVISEMPTY(&pi.uid)) {
 258                 if (BER_BVISEMPTY(&ni->ni_pam_pwdmgr_dn)) {
 259                         /* pwdmgr dn not configured */
 260                         Debug(LDAP_DEBUG_TRACE,"nssov_pam_authc(prelim check): %s\n",
 261                                 "pwdmgr dn not configured", 0, 0);
 262                         ber_str2bv("pwdmgr dn not configured", 0, 0, &pi.msg);
 263                         pi.authz = NSLCD_PAM_PERM_DENIED;
 264                         rc = NSLCD_PAM_PERM_DENIED;
 265                         goto finish;
 266                 } else {
 267                         /* use pwdmgr dn */
 268                         ber_str2bv(ni->ni_pam_pwdmgr_dn.bv_val, 0, 0, &pi.dn);
 269                 }
 270
 271                 /* use pwdmgr pwd if configured */
 272                 if (BER_BVISEMPTY(&pi.pwd)) {
 273                         if (BER_BVISEMPTY(&ni->ni_pam_pwdmgr_pwd)) {
 274                                 Debug(LDAP_DEBUG_TRACE,"nssov_pam_authc(prelim check): %s\n",
 275                                         "no pwdmgr pwd", 0, 0);
 276                                 ber_str2bv("pwdmgr pwd not configured", 0, 0, &pi.msg);
 277                                 pi.authz = NSLCD_PAM_PERM_DENIED;
 278                                 rc = NSLCD_PAM_PERM_DENIED;
 279                                 goto finish;
 280                         }
 281                         /* use configured pwdmgr pwd */
 282                         memset((void *) pwdc, 0, 256);
 283                         strncpy(pi.pwd.bv_val, ni->ni_pam_pwdmgr_pwd.bv_val,
 284                                         ni->ni_pam_pwdmgr_pwd.bv_len);
 285                         pi.pwd.bv_len = ni->ni_pam_pwdmgr_pwd.bv_len;
 286                 }
 287                 pi.ispwdmgr = 1;
 288         }
 289
 290
 291         rc = pam_do_bind(ni, fp, op, &pi);
 292
 293 finish:
 294         Debug(LDAP_DEBUG_TRACE,"nssov_pam_authc(%s): rc (%d)\n",
 295                 pi.dn.bv_val ? pi.dn.bv_val : "NULL",rc,0);
 296         WRITE_INT32(fp,NSLCD_VERSION);
 297         WRITE_INT32(fp,NSLCD_ACTION_PAM_AUTHC);
 298         WRITE_INT32(fp,NSLCD_RESULT_BEGIN);
 299         WRITE_BERVAL(fp,&pi.uid);
 300         WRITE_BERVAL(fp,&pi.dn);
 301         WRITE_INT32(fp,rc);
 302         WRITE_INT32(fp,pi.authz);       /* authz */
 303         WRITE_BERVAL(fp,&pi.msg);       /* authzmsg */
 304         return 0;
 305 }
 306
 307 static struct berval grpmsg =
 308         BER_BVC("Access denied by group check");
 309 static struct berval hostmsg =
 310         BER_BVC("Access denied for this host");
 311 static struct berval svcmsg =
 312         BER_BVC("Access denied for this service");
 313 static struct berval uidmsg =
 314         BER_BVC("Access denied by UID check");
 315
 316 static int pam_compare_cb(Operation *op, SlapReply *rs)
 317 {
 318         if (rs->sr_err == LDAP_COMPARE_TRUE)
 319                 op->o_callback->sc_private = (void *)1;
 320         return LDAP_SUCCESS;
 321 }
 322
 323 int pam_authz(nssov_info *ni,TFILE *fp,Operation *op)
 324 {
 325         struct berval dn, uid, svc, ruser, rhost, tty;
 326         struct berval authzmsg = BER_BVNULL;
 327         int32_t tmpint32;
 328         char dnc[1024];
 329         char uidc[32];
 330         char svcc[256];
 331         char ruserc[32];
 332         char rhostc[256];
 333         char ttyc[256];
 334         int rc;
 335         Entry *e = NULL;
 336         Attribute *a;
 337         slap_callback cb = {0};
 338
 339         READ_STRING(fp,uidc);
 340         uid.bv_val = uidc;
 341         uid.bv_len = tmpint32;
 342         READ_STRING(fp,dnc);
 343         dn.bv_val = dnc;
 344         dn.bv_len = tmpint32;
 345         READ_STRING(fp,svcc);
 346         svc.bv_val = svcc;
 347         svc.bv_len = tmpint32;
 348         READ_STRING(fp,ruserc);
 349         ruser.bv_val = ruserc;
 350         ruser.bv_len = tmpint32;
 351         READ_STRING(fp,rhostc);
 352         rhost.bv_val = rhostc;
 353         rhost.bv_len = tmpint32;
 354         READ_STRING(fp,ttyc);
 355         tty.bv_val = ttyc;
 356         tty.bv_len = tmpint32;
 357
 358         Debug(LDAP_DEBUG_TRACE,"nssov_pam_authz(%s)\n",
 359                         dn.bv_val ? dn.bv_val : "NULL",0,0);
 360
 361         /* If we didn't do authc, we don't have a DN yet */
 362         if (BER_BVISEMPTY(&dn)) {
 363                 struct paminfo pi;
 364                 pi.uid = uid;
 365                 pi.svc = svc;
 366
 367                 rc = pam_uid2dn(ni, op, &pi);
 368                 if (rc) goto finish;
 369                 dn = pi.dn;
 370         }
 371
 372         /* See if they have access to the host and service */
 373         if ((ni->ni_pam_opts & NI_PAM_HOSTSVC) && nssov_pam_svc_ad) {
 374                 AttributeAssertion ava = ATTRIBUTEASSERTION_INIT;
 375                 struct berval hostdn = BER_BVNULL;
 376                 struct berval odn = op->o_ndn;
 377                 SlapReply rs = {REP_RESULT};
 378                 op->o_dn = dn;
 379                 op->o_ndn = dn;
 380                 {
 381                         nssov_mapinfo *mi = &ni->ni_maps[NM_host];
 382                         char fbuf[1024];
 383                         struct berval filter = {sizeof(fbuf),fbuf};
 384                         SlapReply rs2 = {REP_RESULT};
 385
 386                         /* Lookup the host entry */
 387                         nssov_filter_byname(mi,0,&global_host_bv,&filter);
 388                         cb.sc_private = &hostdn;
 389                         cb.sc_response = nssov_name2dn_cb;
 390                         op->o_callback = &cb;
 391                         op->o_req_dn = mi->mi_base;
 392                         op->o_req_ndn = mi->mi_base;
 393                         op->ors_scope = mi->mi_scope;
 394                         op->ors_filterstr = filter;
 395                         op->ors_filter = str2filter_x(op, filter.bv_val);
 396                         op->ors_attrs = slap_anlist_no_attrs;
 397                         op->ors_tlimit = SLAP_NO_LIMIT;
 398                         op->ors_slimit = 2;
 399                         rc = op->o_bd->be_search(op, &rs2);
 400                         filter_free_x(op, op->ors_filter, 1);
 401
 402                         if (BER_BVISEMPTY(&hostdn) &&
 403                                 !BER_BVISEMPTY(&ni->ni_pam_defhost)) {
 404                                 filter.bv_len = sizeof(fbuf);
 405                                 filter.bv_val = fbuf;
 406                                 rs_reinit(&rs2, REP_RESULT);
 407                                 nssov_filter_byname(mi,0,&ni->ni_pam_defhost,&filter);
 408                                 op->ors_filterstr = filter;
 409                                 op->ors_filter = str2filter_x(op, filter.bv_val);
 410                                 rc = op->o_bd->be_search(op, &rs2);
 411                                 filter_free_x(op, op->ors_filter, 1);
 412                         }
 413
 414                         /* no host entry, no default host -> deny */
 415                         if (BER_BVISEMPTY(&hostdn)) {
 416                                 rc = NSLCD_PAM_PERM_DENIED;
 417                                 authzmsg = hostmsg;
 418                                 goto finish;
 419                         }
 420                 }
 421
 422                 cb.sc_response = pam_compare_cb;
 423                 cb.sc_private = NULL;
 424                 op->o_tag = LDAP_REQ_COMPARE;
 425                 op->o_req_dn = hostdn;
 426                 op->o_req_ndn = hostdn;
 427                 ava.aa_desc = nssov_pam_svc_ad;
 428                 ava.aa_value = svc;
 429                 op->orc_ava = &ava;
 430                 rc = op->o_bd->be_compare( op, &rs );
 431                 if ( cb.sc_private == NULL ) {
 432                         authzmsg = svcmsg;
 433                         rc = NSLCD_PAM_PERM_DENIED;
 434                         goto finish;
 435                 }
 436                 op->o_dn = odn;
 437                 op->o_ndn = odn;
 438         }
 439
 440         /* See if they're a member of the group */
 441         if ((ni->ni_pam_opts & NI_PAM_USERGRP) &&
 442                 !BER_BVISEMPTY(&ni->ni_pam_group_dn) &&
 443                 ni->ni_pam_group_ad) {
 444                 AttributeAssertion ava = ATTRIBUTEASSERTION_INIT;
 445                 SlapReply rs = {REP_RESULT};
 446                 op->o_callback = &cb;
 447                 cb.sc_response = slap_null_cb;
 448                 op->o_tag = LDAP_REQ_COMPARE;
 449                 op->o_req_dn = ni->ni_pam_group_dn;
 450                 op->o_req_ndn = ni->ni_pam_group_dn;
 451                 ava.aa_desc = ni->ni_pam_group_ad;
 452                 ava.aa_value = dn;
 453                 op->orc_ava = &ava;
 454                 rc = op->o_bd->be_compare( op, &rs );
 455                 if ( rs.sr_err != LDAP_COMPARE_TRUE ) {
 456                         authzmsg = grpmsg;
 457                         rc = NSLCD_PAM_PERM_DENIED;
 458                         goto finish;
 459                 }
 460         }
 461
 462         /* We need to check the user's entry for these bits */
 463         if ((ni->ni_pam_opts & (NI_PAM_USERHOST|NI_PAM_USERSVC)) ||
 464                 ni->ni_pam_template_ad ||
 465                 ni->ni_pam_min_uid || ni->ni_pam_max_uid ) {
 466                 rc = be_entry_get_rw( op, &dn, NULL, NULL, 0, &e );
 467                 if (rc != LDAP_SUCCESS) {
 468                         rc = NSLCD_PAM_USER_UNKNOWN;
 469                         goto finish;
 470                 }
 471         }
 472         if ((ni->ni_pam_opts & NI_PAM_USERHOST) && nssov_pam_host_ad) {
 473                 a = attr_find(e->e_attrs, nssov_pam_host_ad);
 474                 if (!a || attr_valfind( a,
 475                         SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH |
 476                         SLAP_MR_VALUE_OF_SYNTAX,
 477                         &global_host_bv, NULL, op->o_tmpmemctx )) {
 478                         rc = NSLCD_PAM_PERM_DENIED;
 479                         authzmsg = hostmsg;
 480                         goto finish;
 481                 }
 482         }
 483         if ((ni->ni_pam_opts & NI_PAM_USERSVC) && nssov_pam_svc_ad) {
 484                 a = attr_find(e->e_attrs, nssov_pam_svc_ad);
 485                 if (!a || attr_valfind( a,
 486                         SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH |
 487                         SLAP_MR_VALUE_OF_SYNTAX,
 488                         &svc, NULL, op->o_tmpmemctx )) {
 489                         rc = NSLCD_PAM_PERM_DENIED;
 490                         authzmsg = svcmsg;
 491                         goto finish;
 492                 }
 493         }
 494
 495 /* from passwd.c */
 496 #define UIDN_KEY        2
 497
 498         if (ni->ni_pam_min_uid || ni->ni_pam_max_uid) {
 499                 int id;
 500                 char *tmp;
 501                 nssov_mapinfo *mi = &ni->ni_maps[NM_passwd];
 502                 a = attr_find(e->e_attrs, mi->mi_attrs[UIDN_KEY].an_desc);
 503                 if (!a) {
 504                         rc = NSLCD_PAM_PERM_DENIED;
 505                         authzmsg = uidmsg;
 506                         goto finish;
 507                 }
 508                 id = (int)strtol(a->a_vals[0].bv_val,&tmp,0);
 509                 if (a->a_vals[0].bv_val[0] == '\0' || *tmp != '\0') {
 510                         rc = NSLCD_PAM_PERM_DENIED;
 511                         authzmsg = uidmsg;
 512                         goto finish;
 513                 }
 514                 if ((ni->ni_pam_min_uid && id < ni->ni_pam_min_uid) ||
 515                         (ni->ni_pam_max_uid && id > ni->ni_pam_max_uid)) {
 516                         rc = NSLCD_PAM_PERM_DENIED;
 517                         authzmsg = uidmsg;
 518                         goto finish;
 519                 }
 520         }
 521
 522         if (ni->ni_pam_template_ad) {
 523                 a = attr_find(e->e_attrs, ni->ni_pam_template_ad);
 524                 if (a)
 525                         uid = a->a_vals[0];
 526                 else if (!BER_BVISEMPTY(&ni->ni_pam_template))
 527                         uid = ni->ni_pam_template;
 528         }
 529         rc = NSLCD_PAM_SUCCESS;
 530
 531 finish:
 532         WRITE_INT32(fp,NSLCD_VERSION);
 533         WRITE_INT32(fp,NSLCD_ACTION_PAM_AUTHZ);
 534         WRITE_INT32(fp,NSLCD_RESULT_BEGIN);
 535         WRITE_BERVAL(fp,&uid);
 536         WRITE_BERVAL(fp,&dn);
 537         WRITE_INT32(fp,rc);
 538         WRITE_BERVAL(fp,&authzmsg);
 539         if (e) {
 540                 be_entry_release_r(op, e);
 541         }
 542         switch (rc) {
 543         case NSLCD_PAM_SUCCESS:
 544                 Debug(LDAP_DEBUG_TRACE,"nssov_pam_authz(): success\n", 0,0,0);
 545                 break;
 546         case NSLCD_PAM_PERM_DENIED:
 547                 Debug(LDAP_DEBUG_TRACE,"nssov_pam_authz(): %s\n",
 548                         authzmsg.bv_val ? authzmsg.bv_val : "NULL",0,0);
 549                 break;
 550         default:
 551                 Debug(LDAP_DEBUG_TRACE,
 552                         "nssov_pam_authz(): permission denied, rc (%d)\n",
 553                         rc, 0, 0);
 554         }
 555         return 0;
 556 }
 557
 558 static int pam_sess(nssov_info *ni,TFILE *fp,Operation *op,int action)
 559 {
 560         struct berval dn, uid, svc, tty, rhost, ruser;
 561         int32_t tmpint32;
 562         char dnc[1024];
 563         char svcc[256];
 564         char uidc[32];
 565         char ttyc[32];
 566         char rhostc[256];
 567         char ruserc[32];
 568         slap_callback cb = {0};
 569         SlapReply rs = {REP_RESULT};
 570         char timebuf[LDAP_LUTIL_GENTIME_BUFSIZE];
 571         struct berval timestamp, bv[2], *nbv;
 572         time_t stamp;
 573         Modifications mod;
 574         int rc = 0;
 575         int sessionID = -1;
 576
 577         READ_STRING(fp,uidc);
 578         uid.bv_val = uidc;
 579         uid.bv_len = tmpint32;
 580         READ_STRING(fp,dnc);
 581         dn.bv_val = dnc;
 582         dn.bv_len = tmpint32;
 583         READ_STRING(fp,svcc);
 584         svc.bv_val = svcc;
 585         svc.bv_len = tmpint32;
 586         READ_STRING(fp,ttyc);
 587         tty.bv_val = ttyc;
 588         tty.bv_len = tmpint32;
 589         READ_STRING(fp,rhostc);
 590         rhost.bv_val = rhostc;
 591         rhost.bv_len = tmpint32;
 592         READ_STRING(fp,ruserc);
 593         ruser.bv_val = ruserc;
 594         ruser.bv_len = tmpint32;
 595         READ_INT32(fp,stamp);
 596
 597         Debug(LDAP_DEBUG_TRACE,"nssov_pam_sess_%c(%s)\n",
 598                 action==NSLCD_ACTION_PAM_SESS_O ? 'o' : 'c', dn.bv_val,0);
 599
 600         if (!dn.bv_len) {
 601                 Debug(LDAP_DEBUG_TRACE,"nssov_pam_sess_%c(): %s\n",
 602                         action==NSLCD_ACTION_PAM_SESS_O ? 'o' : 'c', "null DN",0);
 603                 rc = -1;
 604                 goto done;
 605         }
 606
 607         if (!ni->ni_pam_sessions) {
 608                 Debug(LDAP_DEBUG_TRACE,"nssov_pam_sess_%c(): %s\n",
 609                         action==NSLCD_ACTION_PAM_SESS_O ? 'o' : 'c',
 610                         "pam session(s) not configured, ignored",0);
 611                 rc = -1;
 612                 goto done;
 613         }
 614
 615         {
 616                 int i, found=0;
 617                 for (i=0; !BER_BVISNULL(&ni->ni_pam_sessions[i]); i++) {
 618                         if (ni->ni_pam_sessions[i].bv_len != svc.bv_len)
 619                                 continue;
 620                         if (!strcasecmp(ni->ni_pam_sessions[i].bv_val, svc.bv_val)) {
 621                                 found = 1;
 622                                 break;
 623                         }
 624                 }
 625                 if (!found) {
 626                         Debug(LDAP_DEBUG_TRACE,
 627                                 "nssov_pam_sess_%c(): service(%s) not configured, ignored\n",
 628                                 action==NSLCD_ACTION_PAM_SESS_O ? 'o' : 'c',
 629                                 svc.bv_val,0);
 630                         rc = -1;
 631                         goto done;
 632                 }
 633         }
 634
 635         slap_op_time( &op->o_time, &op->o_tincr );
 636         timestamp.bv_len = sizeof(timebuf);
 637         timestamp.bv_val = timebuf;
 638         if (action == NSLCD_ACTION_PAM_SESS_O )
 639                 stamp = op->o_time;
 640         slap_timestamp( &stamp, &timestamp );
 641         bv[0].bv_len = timestamp.bv_len + global_host_bv.bv_len + svc.bv_len +
 642                 tty.bv_len + ruser.bv_len + rhost.bv_len + STRLENOF("    (@)");
 643         bv[0].bv_val = op->o_tmpalloc( bv[0].bv_len+1, op->o_tmpmemctx );
 644         sprintf(bv[0].bv_val, "%s %s %s %s (%s@%s)",
 645                 timestamp.bv_val, global_host_bv.bv_val, svc.bv_val, tty.bv_val,
 646                 ruser.bv_val, rhost.bv_val);
 647
 648         Debug(LDAP_DEBUG_TRACE, "nssov_pam_sess_%c(): loginStatus (%s) \n",
 649                         action==NSLCD_ACTION_PAM_SESS_O ? 'o' : 'c', bv[0].bv_val,0);
 650
 651         mod.sml_numvals = 1;
 652         mod.sml_values = bv;
 653         BER_BVZERO(&bv[1]);
 654         attr_normalize( ad_loginStatus, bv, &nbv, op->o_tmpmemctx );
 655         mod.sml_nvalues = nbv;
 656         mod.sml_desc = ad_loginStatus;
 657         mod.sml_op = action == NSLCD_ACTION_PAM_SESS_O ? LDAP_MOD_ADD :
 658                 LDAP_MOD_DELETE;
 659         mod.sml_flags = SLAP_MOD_INTERNAL;
 660         mod.sml_next = NULL;
 661
 662         cb.sc_response = slap_null_cb;
 663         op->o_callback = &cb;
 664         op->o_tag = LDAP_REQ_MODIFY;
 665         op->o_dn = op->o_bd->be_rootdn;
 666         op->o_ndn = op->o_bd->be_rootndn;
 667         op->orm_modlist = &mod;
 668         op->orm_no_opattrs = 1;
 669         op->o_req_dn = dn;
 670         op->o_req_ndn = dn;
 671         if (op->o_bd->be_modify( op, &rs ) != LDAP_SUCCESS) {
 672                 Debug(LDAP_DEBUG_TRACE,
 673                         "nssov_pam_sess_%c(): modify op failed\n",
 674                         action==NSLCD_ACTION_PAM_SESS_O ? 'o' : 'c',
 675                         0,0);
 676                 rc = -1;
 677         }
 678
 679         if ( mod.sml_next ) {
 680                 slap_mods_free( mod.sml_next, 1 );
 681         }
 682         ber_bvarray_free_x( nbv, op->o_tmpmemctx );
 683
 684 done:;
 685
 686         if (rc == 0) {
 687                 Debug(LDAP_DEBUG_TRACE,
 688                         "nssov_pam_sess_%c(): success\n",
 689                         action==NSLCD_ACTION_PAM_SESS_O ? 'o' : 'c',
 690                         0,0);
 691                 sessionID = op->o_time;
 692         }
 693         WRITE_INT32(fp,NSLCD_VERSION);
 694         WRITE_INT32(fp,action);
 695         WRITE_INT32(fp,NSLCD_RESULT_BEGIN);
 696         WRITE_INT32(fp,sessionID);
 697         return 0;
 698 }
 699
 700 int pam_sess_o(nssov_info *ni,TFILE *fp,Operation *op)
 701 {
 702         return pam_sess(ni,fp,op,NSLCD_ACTION_PAM_SESS_O);
 703 }
 704
 705 int pam_sess_c(nssov_info *ni,TFILE *fp,Operation *op)
 706 {
 707         return pam_sess(ni,fp,op,NSLCD_ACTION_PAM_SESS_C);
 708 }
 709
 710 int pam_pwmod(nssov_info *ni,TFILE *fp,Operation *op)
 711 {
 712         struct berval npw;
 713         int32_t tmpint32;
 714         char dnc[1024];
 715         char uidc[32];
 716         char opwc[256];
 717         char npwc[256];
 718         char svcc[256];
 719         struct paminfo pi;
 720         int rc;
 721
 722         READ_STRING(fp,uidc);
 723         pi.uid.bv_val = uidc;
 724         pi.uid.bv_len = tmpint32;
 725         READ_STRING(fp,dnc);
 726         pi.dn.bv_val = dnc;
 727         pi.dn.bv_len = tmpint32;
 728         READ_STRING(fp,svcc);
 729         pi.svc.bv_val = svcc;
 730         pi.svc.bv_len = tmpint32;
 731         READ_STRING(fp,opwc);
 732         pi.pwd.bv_val = opwc;
 733         pi.pwd.bv_len = tmpint32;
 734         READ_STRING(fp,npwc);
 735         npw.bv_val = npwc;
 736         npw.bv_len = tmpint32;
 737
 738         Debug(LDAP_DEBUG_TRACE,"nssov_pam_pwmod(%s), %s\n",
 739                 pi.dn.bv_val ? pi.dn.bv_val : "NULL",
 740                 pi.uid.bv_val ? pi.uid.bv_val : "NULL" ,0);
 741
 742         BER_BVZERO(&pi.msg);
 743         pi.ispwdmgr = 0;
 744
 745         /* nssov_pam prohibits password mod */
 746         if (!BER_BVISEMPTY(&ni->ni_pam_password_prohibit_message)) {
 747                 Debug(LDAP_DEBUG_TRACE,"nssov_pam_pwmod(): %s (%s)\n",
 748                         "password_prohibit_message",
 749                         ni->ni_pam_password_prohibit_message.bv_val,0);
 750                 ber_str2bv(ni->ni_pam_password_prohibit_message.bv_val, 0, 0, &pi.msg);
 751                 rc = NSLCD_PAM_PERM_DENIED;
 752                 goto done;
 753         }
 754
 755         if (BER_BVISEMPTY(&pi.dn)) {
 756                 /* should not be here at all, pam_authc() should have returned */
 757                 /* error */
 758                 Debug(LDAP_DEBUG_TRACE,"nssov_pam_pwmod(), %s\n",
 759                         "prelim checking failed", 0, 0);
 760                 ber_str2bv("no pwmod requesting dn", 0, 0, &pi.msg);
 761                 rc = NSLCD_PAM_PERM_DENIED;
 762                 goto done;
 763         }
 764
 765         if (BER_BVISEMPTY(&ni->ni_pam_pwdmgr_dn)) {
 766                 Debug(LDAP_DEBUG_TRACE,"nssov_pam_pwmod(), %s\n",
 767                         "pwdmgr not configured", 0, 0);
 768                 ber_str2bv("pwdmgr not configured", 0, 0, &pi.msg);
 769                 rc = NSLCD_PAM_PERM_DENIED;
 770                 goto done;
 771         } else if (!ber_bvcmp(&pi.dn, &ni->ni_pam_pwdmgr_dn)) {
 772                 /* root user requesting pwmod, convert uid to dn */
 773                 pi.ispwdmgr = 1;
 774                 rc = pam_uid2dn(ni, op, &pi);
 775                 if (rc) {
 776                         ber_str2bv("unable to convert uid to dn", 0, 0, &pi.msg);
 777                         rc = NSLCD_PAM_PERM_DENIED;
 778                         goto done;
 779                 }
 780         }
 781
 782         BerElementBuffer berbuf;
 783         BerElement *ber = (BerElement *)&berbuf;
 784         struct berval bv;
 785         SlapReply rs = {REP_RESULT};
 786         slap_callback cb = {0};
 787
 788         ber_init_w_nullc(ber, LBER_USE_DER);
 789         ber_printf(ber, "{");
 790         if (!BER_BVISEMPTY(&pi.dn))
 791                 ber_printf(ber, "tO", LDAP_TAG_EXOP_MODIFY_PASSWD_ID,
 792                         &pi.dn);
 793         /* supply old pwd only when end-user changing pwd */
 794         if (!BER_BVISEMPTY(&pi.pwd) && pi.ispwdmgr == 0)
 795                 ber_printf(ber, "tO", LDAP_TAG_EXOP_MODIFY_PASSWD_OLD,
 796                         &pi.pwd);
 797         if (!BER_BVISEMPTY(&npw))
 798                 ber_printf(ber, "tO", LDAP_TAG_EXOP_MODIFY_PASSWD_NEW,
 799                         &npw);
 800         ber_printf(ber, "N}");
 801         ber_flatten2(ber, &bv, 0);
 802         op->o_tag = LDAP_REQ_EXTENDED;
 803         op->ore_reqoid = slap_EXOP_MODIFY_PASSWD;
 804         op->ore_reqdata = &bv;
 805
 806         if (pi.ispwdmgr) {
 807                 /* root user changing end-user passwords */
 808                 op->o_dn = ni->ni_pam_pwdmgr_dn;
 809                 op->o_ndn = ni->ni_pam_pwdmgr_dn;
 810         } else {
 811                 /* end-user self-pwd-mod */
 812                 op->o_dn = pi.dn;
 813                 op->o_ndn = pi.dn;
 814         }
 815         op->o_callback = &cb;
 816         op->o_conn->c_authz_backend = op->o_bd;
 817         cb.sc_response = slap_null_cb;
 818         op->o_bd = frontendDB;
 819         rc = op->o_bd->be_extended(op, &rs);
 820         if (rs.sr_text)
 821                 ber_str2bv(rs.sr_text, 0, 0, &pi.msg);
 822         if (rc == LDAP_SUCCESS)
 823                 rc = NSLCD_PAM_SUCCESS;
 824         else
 825                 rc = NSLCD_PAM_PERM_DENIED;
 826
 827 done:;
 828         Debug(LDAP_DEBUG_TRACE,"nssov_pam_pwmod(), rc (%d)\n", rc, 0, 0);
 829         WRITE_INT32(fp,NSLCD_VERSION);
 830         WRITE_INT32(fp,NSLCD_ACTION_PAM_PWMOD);
 831         WRITE_INT32(fp,NSLCD_RESULT_BEGIN);
 832         WRITE_BERVAL(fp,&pi.uid);
 833         WRITE_BERVAL(fp,&pi.dn);
 834         WRITE_INT32(fp,rc);
 835         WRITE_BERVAL(fp,&pi.msg);
 836         return 0;
 837 }
 838
 839 int nssov_pam_init()
 840 {
 841         int code = 0;
 842         const char *text;
 843         if (!ad_loginStatus)
 844                 code = slap_str2ad("loginStatus", &ad_loginStatus, &text);
 845
 846         return code;
 847 }