git.sur5r.net Git - openldap/blob - contrib/slapd-modules/smbk5pwd/smbk5pwd.c

   1 /* smbk5pwd.c - Overlay for managing Samba and Heimdal passwords */
   2 /* $OpenLDAP$ */
   3 /*
   4  * Copyright 2004-2005 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  * Support for sambaPwdMustChange added by Marco D'Ettorre.
  17  * Support for table-driven configuration added by Pierangelo Masarati.
  18  *
  19  * The conditions of the OpenLDAP Public License apply.
  20  */
  21
  22 #include <portable.h>
  23
  24 #ifndef SLAPD_OVER_SMBK5PWD
  25 #define SLAPD_OVER_SMBK5PWD SLAPD_MOD_DYNAMIC
  26 #endif
  27
  28 #ifdef SLAPD_OVER_SMBK5PWD
  29
  30 #include <slap.h>
  31 #include <ac/errno.h>
  32 #include <ac/string.h>
  33
  34 #include "config.h"
  35
  36 #ifdef DO_KRB5
  37 #include <lber.h>
  38 #include <lber_pvt.h>
  39 #include <lutil.h>
  40
  41 /* make ASN1_MALLOC_ENCODE use our allocator */
  42 #define malloc  ch_malloc
  43
  44 #include <krb5.h>
  45 #include <kadm5/admin.h>
  46 #include <hdb.h>
  47
  48 #ifndef HDB_INTERFACE_VERSION
  49 #define HDB_MASTER_KEY_SET      master_key_set
  50 #else
  51 #define HDB_MASTER_KEY_SET      hdb_master_key_set
  52 #endif
  53
  54 static krb5_context context;
  55 static void *kadm_context;
  56 static kadm5_config_params conf;
  57 static HDB *db;
  58
  59 static AttributeDescription *ad_krb5Key;
  60 static AttributeDescription *ad_krb5KeyVersionNumber;
  61 static AttributeDescription *ad_krb5PrincipalName;
  62 static ObjectClass *oc_krb5KDCEntry;
  63 #endif
  64
  65 #ifdef DO_SAMBA
  66 #include <openssl/des.h>
  67 #include <openssl/md4.h>
  68 #include "ldap_utf8.h"
  69
  70 static AttributeDescription *ad_sambaLMPassword;
  71 static AttributeDescription *ad_sambaNTPassword;
  72 static AttributeDescription *ad_sambaPwdLastSet;
  73 static AttributeDescription *ad_sambaPwdMustChange;
  74 static ObjectClass *oc_sambaSamAccount;
  75 #endif
  76
  77 /* Per-instance configuration information */
  78 typedef struct smbk5pwd_t {
  79         unsigned        mode;
  80 #define SMBK5PWD_F_KRB5         (0x1U)
  81 #define SMBK5PWD_F_SAMBA        (0x2U)
  82
  83 #define SMBK5PWD_DO_KRB5(pi)    ((pi)->mode & SMBK5PWD_F_KRB5)
  84 #define SMBK5PWD_DO_SAMBA(pi)   ((pi)->mode & SMBK5PWD_F_SAMBA)
  85
  86 #ifdef DO_KRB5
  87         /* nothing yet */
  88 #endif
  89
  90 #ifdef DO_SAMBA
  91         /* How many seconds before forcing a password change? */
  92         time_t  smb_must_change;
  93 #endif
  94 } smbk5pwd_t;
  95
  96 static const unsigned SMBK5PWD_F_ALL    =
  97         0
  98 #ifdef DO_KRB5
  99         | SMBK5PWD_F_KRB5
 100 #endif
 101 #ifdef DO_SAMBA
 102         | SMBK5PWD_F_SAMBA
 103 #endif
 104 ;
 105
 106 static int smbk5pwd_modules_init( smbk5pwd_t *pi );
 107
 108 #ifdef DO_SAMBA
 109 static const char hex[] = "0123456789abcdef";
 110
 111 /* From liblutil/passwd.c... */
 112 static void lmPasswd_to_key(
 113         const char *lmPasswd,
 114         des_cblock *key)
 115 {
 116         const unsigned char *lpw = (const unsigned char *)lmPasswd;
 117         unsigned char *k = (unsigned char *)key;
 118
 119         /* make room for parity bits */
 120         k[0] = lpw[0];
 121         k[1] = ((lpw[0]&0x01)<<7) | (lpw[1]>>1);
 122         k[2] = ((lpw[1]&0x03)<<6) | (lpw[2]>>2);
 123         k[3] = ((lpw[2]&0x07)<<5) | (lpw[3]>>3);
 124         k[4] = ((lpw[3]&0x0F)<<4) | (lpw[4]>>4);
 125         k[5] = ((lpw[4]&0x1F)<<3) | (lpw[5]>>5);
 126         k[6] = ((lpw[5]&0x3F)<<2) | (lpw[6]>>6);
 127         k[7] = ((lpw[6]&0x7F)<<1);
 128
 129         des_set_odd_parity( key );
 130 }
 131
 132 #define MAX_PWLEN 256
 133 #define HASHLEN 16
 134
 135 static void hexify(
 136         const char in[HASHLEN],
 137         struct berval *out
 138 )
 139 {
 140         int i;
 141         char *a;
 142         unsigned char *b;
 143
 144         out->bv_val = ch_malloc(HASHLEN*2 + 1);
 145         out->bv_len = HASHLEN*2;
 146
 147         a = out->bv_val;
 148         b = (unsigned char *)in;
 149         for (i=0; i<HASHLEN; i++) {
 150                 *a++ = hex[*b >> 4];
 151                 *a++ = hex[*b++ & 0x0f];
 152         }
 153         *a++ = '\0';
 154 }
 155
 156 static void lmhash(
 157         struct berval *passwd,
 158         struct berval *hash
 159 )
 160 {
 161         char UcasePassword[15];
 162         des_cblock key;
 163         des_key_schedule schedule;
 164         des_cblock StdText = "KGS!@#$%";
 165         des_cblock hbuf[2];
 166
 167         strncpy( UcasePassword, passwd->bv_val, 14 );
 168         UcasePassword[14] = '\0';
 169         ldap_pvt_str2upper( UcasePassword );
 170
 171         lmPasswd_to_key( UcasePassword, &key );
 172         des_set_key_unchecked( &key, schedule );
 173         des_ecb_encrypt( &StdText, &hbuf[0], schedule , DES_ENCRYPT );
 174
 175         lmPasswd_to_key( &UcasePassword[7], &key );
 176         des_set_key_unchecked( &key, schedule );
 177         des_ecb_encrypt( &StdText, &hbuf[1], schedule , DES_ENCRYPT );
 178
 179         hexify( (char *)hbuf, hash );
 180 }
 181
 182 static void nthash(
 183         struct berval *passwd,
 184         struct berval *hash
 185 )
 186 {
 187         /* Windows currently only allows 14 character passwords, but
 188          * may support up to 256 in the future. We assume this means
 189          * 256 UCS2 characters, not 256 bytes...
 190          */
 191         char hbuf[HASHLEN];
 192         MD4_CTX ctx;
 193
 194         if (passwd->bv_len > MAX_PWLEN*2)
 195                 passwd->bv_len = MAX_PWLEN*2;
 196
 197         MD4_Init( &ctx );
 198         MD4_Update( &ctx, passwd->bv_val, passwd->bv_len );
 199         MD4_Final( (unsigned char *)hbuf, &ctx );
 200
 201         hexify( hbuf, hash );
 202 }
 203 #endif /* DO_SAMBA */
 204
 205 #ifdef DO_KRB5
 206
 207 static int smbk5pwd_op_cleanup(
 208         Operation *op,
 209         SlapReply *rs )
 210 {
 211         slap_callback *cb;
 212
 213         /* clear out the current key */
 214         ldap_pvt_thread_pool_setkey( op->o_threadctx, smbk5pwd_op_cleanup,
 215                 NULL, NULL );
 216
 217         /* free the callback */
 218         cb = op->o_callback;
 219         op->o_callback = cb->sc_next;
 220         op->o_tmpfree( cb, op->o_tmpmemctx );
 221         return 0;
 222 }
 223
 224 static int smbk5pwd_op_bind(
 225         Operation *op,
 226         SlapReply *rs )
 227 {
 228         /* If this is a simple Bind, stash the Op pointer so our chk
 229          * function can find it. Set a cleanup callback to clear it
 230          * out when the Bind completes.
 231          */
 232         if ( op->oq_bind.rb_method == LDAP_AUTH_SIMPLE ) {
 233                 slap_callback *cb;
 234                 ldap_pvt_thread_pool_setkey( op->o_threadctx, smbk5pwd_op_cleanup, op,
 235                         NULL );
 236                 cb = op->o_tmpcalloc( 1, sizeof(slap_callback), op->o_tmpmemctx );
 237                 cb->sc_cleanup = smbk5pwd_op_cleanup;
 238                 cb->sc_next = op->o_callback;
 239                 op->o_callback = cb;
 240         }
 241         return SLAP_CB_CONTINUE;
 242 }
 243
 244 static LUTIL_PASSWD_CHK_FUNC k5key_chk;
 245 static LUTIL_PASSWD_HASH_FUNC k5key_hash;
 246 static const struct berval k5key_scheme = BER_BVC("{K5KEY}");
 247
 248 /* This password scheme stores no data in the userPassword attribute
 249  * other than the scheme name. It assumes the invoking entry is a
 250  * krb5KDCentry and compares the passed-in credentials against the
 251  * krb5Key attribute. The krb5Key may be multi-valued, but they are
 252  * simply multiple keytypes generated from the same input string, so
 253  * only the first value needs to be compared here.
 254  *
 255  * Since the lutil_passwd API doesn't pass the Entry object in, we
 256  * have to fetch it ourselves in order to get access to the other
 257  * attributes. We accomplish this with the help of the overlay's Bind
 258  * function, which stores the current Operation pointer in thread-specific
 259  * storage so we can retrieve it here. The Operation provides all
 260  * the necessary context for us to get Entry from the database.
 261  */
 262 static int k5key_chk(
 263         const struct berval *sc,
 264         const struct berval *passwd,
 265         const struct berval *cred,
 266         const char **text )
 267 {
 268         void *ctx;
 269         Operation *op;
 270         int rc;
 271         Entry *e;
 272         Attribute *a;
 273     krb5_error_code ret;
 274     krb5_keyblock key;
 275     krb5_salt salt;
 276         hdb_entry ent;
 277
 278         /* Find our thread context, find our Operation */
 279         ctx = ldap_pvt_thread_pool_context();
 280
 281         if ( ldap_pvt_thread_pool_getkey( ctx, smbk5pwd_op_cleanup, (void **)&op, NULL ) ||
 282                 !op )
 283                 return LUTIL_PASSWD_ERR;
 284
 285         rc = be_entry_get_rw( op, &op->o_req_ndn, NULL, NULL, 0, &e );
 286         if ( rc != LDAP_SUCCESS ) return LUTIL_PASSWD_ERR;
 287
 288         rc = LUTIL_PASSWD_ERR;
 289         do {
 290                 size_t l;
 291                 Key ekey = {0};
 292
 293                 a = attr_find( e->e_attrs, ad_krb5PrincipalName );
 294                 if (!a ) break;
 295
 296                 memset( &ent, 0, sizeof(ent) );
 297                 ret = krb5_parse_name(context, a->a_vals[0].bv_val, &ent.principal);
 298                 if ( ret ) break;
 299                 krb5_get_pw_salt( context, ent.principal, &salt );
 300                 krb5_free_principal( context, ent.principal );
 301
 302                 a = attr_find( e->e_attrs, ad_krb5Key );
 303                 if ( !a ) break;
 304
 305                 ent.keys.len = 1;
 306                 ent.keys.val = &ekey;
 307                 decode_Key((unsigned char *) a->a_vals[0].bv_val,
 308                         (size_t) a->a_vals[0].bv_len, &ent.keys.val[0], &l);
 309                 if ( db->HDB_MASTER_KEY_SET )
 310                         hdb_unseal_keys( context, db, &ent );
 311
 312                 krb5_string_to_key_salt( context, ekey.key.keytype, cred->bv_val,
 313                         salt, &key );
 314
 315                 krb5_free_salt( context, salt );
 316
 317                 if ( memcmp( ekey.key.keyvalue.data, key.keyvalue.data,
 318                         key.keyvalue.length ) == 0 ) rc = LUTIL_PASSWD_OK;
 319
 320                 krb5_free_keyblock_contents( context, &key );
 321                 krb5_free_keyblock_contents( context, &ekey.key );
 322
 323         } while(0);
 324         be_entry_release_r( op, e );
 325         return rc;
 326 }
 327
 328 static int k5key_hash(
 329         const struct berval *scheme,
 330         const struct berval *passwd,
 331         struct berval *hash,
 332         const char **text )
 333 {
 334         ber_dupbv( hash, (struct berval *)&k5key_scheme );
 335         return LUTIL_PASSWD_OK;
 336 }
 337 #endif /* DO_KRB5 */
 338
 339 static int smbk5pwd_exop_passwd(
 340         Operation *op,
 341         SlapReply *rs )
 342 {
 343         int rc;
 344         req_pwdexop_s *qpw = &op->oq_pwdexop;
 345         Entry *e;
 346         Modifications *ml;
 347         slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
 348         smbk5pwd_t *pi = on->on_bi.bi_private;
 349
 350         /* Not the operation we expected, pass it on... */
 351         if ( ber_bvcmp( &slap_EXOP_MODIFY_PASSWD, &op->ore_reqoid ) ) {
 352                 return SLAP_CB_CONTINUE;
 353         }
 354
 355         op->o_bd->bd_info = (BackendInfo *)on->on_info;
 356         rc = be_entry_get_rw( op, &op->o_req_ndn, NULL, NULL, 0, &e );
 357         if ( rc != LDAP_SUCCESS ) return rc;
 358
 359 #ifdef DO_KRB5
 360         /* Kerberos stuff */
 361         do {
 362                 krb5_error_code ret;
 363                 hdb_entry ent;
 364                 struct berval *keys;
 365                 int kvno, i;
 366                 Attribute *a;
 367
 368                 if ( !SMBK5PWD_DO_KRB5( pi ) ) break;
 369
 370                 if ( !is_entry_objectclass(e, oc_krb5KDCEntry, 0 ) ) break;
 371
 372                 a = attr_find( e->e_attrs, ad_krb5PrincipalName );
 373                 if ( !a ) break;
 374
 375                 memset( &ent, 0, sizeof(ent) );
 376                 ret = krb5_parse_name(context, a->a_vals[0].bv_val, &ent.principal);
 377                 if ( ret ) break;
 378
 379                 a = attr_find( e->e_attrs, ad_krb5KeyVersionNumber );
 380                 if ( a ) {
 381                         kvno = atoi(a->a_vals[0].bv_val);
 382                 } else {
 383                         /* shouldn't happen, this is a required attr */
 384                         kvno = 0;
 385                 }
 386
 387                 ret = _kadm5_set_keys(kadm_context, &ent, qpw->rs_new.bv_val);
 388                 hdb_seal_keys(context, db, &ent);
 389                 krb5_free_principal( context, ent.principal );
 390
 391                 keys = ch_malloc( (ent.keys.len + 1) * sizeof(struct berval));
 392
 393                 for (i = 0; i < ent.keys.len; i++) {
 394                         unsigned char *buf;
 395                         size_t len;
 396
 397                         ASN1_MALLOC_ENCODE(Key, buf, len, &ent.keys.val[i], &len, ret);
 398                         if (ret != 0)
 399                                 break;
 400
 401                         keys[i].bv_val = (char *)buf;
 402                         keys[i].bv_len = len;
 403                 }
 404                 BER_BVZERO( &keys[i] );
 405
 406                 _kadm5_free_keys(kadm_context, ent.keys.len, ent.keys.val);
 407
 408                 if ( i != ent.keys.len ) {
 409                         ber_bvarray_free( keys );
 410                         break;
 411                 }
 412
 413                 ml = ch_malloc(sizeof(Modifications));
 414                 if (!qpw->rs_modtail) qpw->rs_modtail = &ml->sml_next;
 415                 ml->sml_next = qpw->rs_mods;
 416                 qpw->rs_mods = ml;
 417
 418                 ml->sml_desc = ad_krb5Key;
 419                 ml->sml_op = LDAP_MOD_REPLACE;
 420 #ifdef SLAP_MOD_INTERNAL
 421                 ml->sml_flags = SLAP_MOD_INTERNAL;
 422 #endif
 423                 ml->sml_values = keys;
 424                 ml->sml_nvalues = NULL;
 425
 426                 ml = ch_malloc(sizeof(Modifications));
 427                 ml->sml_next = qpw->rs_mods;
 428                 qpw->rs_mods = ml;
 429
 430                 ml->sml_desc = ad_krb5KeyVersionNumber;
 431                 ml->sml_op = LDAP_MOD_REPLACE;
 432 #ifdef SLAP_MOD_INTERNAL
 433                 ml->sml_flags = SLAP_MOD_INTERNAL;
 434 #endif
 435                 ml->sml_values = ch_malloc( 2 * sizeof(struct berval));
 436                 ml->sml_values[0].bv_val = ch_malloc( 64 );
 437                 ml->sml_values[0].bv_len = sprintf(ml->sml_values[0].bv_val,
 438                         "%d", kvno+1 );
 439                 BER_BVZERO( &ml->sml_values[1] );
 440                 ml->sml_nvalues = NULL;
 441         } while ( 0 );
 442 #endif /* DO_KRB5 */
 443
 444 #ifdef DO_SAMBA
 445         /* Samba stuff */
 446         if ( SMBK5PWD_DO_SAMBA( pi ) && is_entry_objectclass(e, oc_sambaSamAccount, 0 ) ) {
 447                 struct berval *keys;
 448                 ber_len_t j,l;
 449                 wchar_t *wcs, wc;
 450                 char *c, *d;
 451                 struct berval pwd;
 452
 453                 /* Expand incoming UTF8 string to UCS4 */
 454                 l = ldap_utf8_chars(qpw->rs_new.bv_val);
 455                 wcs = ch_malloc((l+1) * sizeof(wchar_t));
 456
 457                 ldap_x_utf8s_to_wcs( wcs, qpw->rs_new.bv_val, l );
 458
 459                 /* Truncate UCS4 to UCS2 */
 460                 c = (char *)wcs;
 461                 for (j=0; j<l; j++) {
 462                         wc = wcs[j];
 463                         *c++ = wc & 0xff;
 464                         *c++ = (wc >> 8) & 0xff;
 465                 }
 466                 *c++ = 0;
 467                 pwd.bv_val = (char *)wcs;
 468                 pwd.bv_len = l * 2;
 469
 470                 ml = ch_malloc(sizeof(Modifications));
 471                 if (!qpw->rs_modtail) qpw->rs_modtail = &ml->sml_next;
 472                 ml->sml_next = qpw->rs_mods;
 473                 qpw->rs_mods = ml;
 474
 475                 keys = ch_malloc( 2 * sizeof(struct berval) );
 476                 BER_BVZERO( &keys[1] );
 477                 nthash( &pwd, keys );
 478
 479                 ml->sml_desc = ad_sambaNTPassword;
 480                 ml->sml_op = LDAP_MOD_REPLACE;
 481 #ifdef SLAP_MOD_INTERNAL
 482                 ml->sml_flags = SLAP_MOD_INTERNAL;
 483 #endif
 484                 ml->sml_values = keys;
 485                 ml->sml_nvalues = NULL;
 486
 487                 /* Truncate UCS2 to 8-bit ASCII */
 488                 c = pwd.bv_val+1;
 489                 d = pwd.bv_val+2;
 490                 for (j=1; j<l; j++) {
 491                         *c++ = *d++;
 492                         d++;
 493                 }
 494                 pwd.bv_len /= 2;
 495                 pwd.bv_val[pwd.bv_len] = '\0';
 496
 497                 ml = ch_malloc(sizeof(Modifications));
 498                 ml->sml_next = qpw->rs_mods;
 499                 qpw->rs_mods = ml;
 500
 501                 keys = ch_malloc( 2 * sizeof(struct berval) );
 502                 BER_BVZERO( &keys[1] );
 503                 lmhash( &pwd, keys );
 504
 505                 ml->sml_desc = ad_sambaLMPassword;
 506                 ml->sml_op = LDAP_MOD_REPLACE;
 507 #ifdef SLAP_MOD_INTERNAL
 508                 ml->sml_flags = SLAP_MOD_INTERNAL;
 509 #endif
 510                 ml->sml_values = keys;
 511                 ml->sml_nvalues = NULL;
 512
 513                 ch_free(wcs);
 514
 515                 ml = ch_malloc(sizeof(Modifications));
 516                 ml->sml_next = qpw->rs_mods;
 517                 qpw->rs_mods = ml;
 518
 519                 keys = ch_malloc( 2 * sizeof(struct berval) );
 520                 keys[0].bv_val = ch_malloc( STRLENOF( "9223372036854775807L" ) + 1 );
 521                 keys[0].bv_len = snprintf(keys[0].bv_val,
 522                         STRLENOF( "9223372036854775807L" ) + 1,
 523                         "%ld", slap_get_time());
 524                 BER_BVZERO( &keys[1] );
 525
 526                 ml->sml_desc = ad_sambaPwdLastSet;
 527                 ml->sml_op = LDAP_MOD_REPLACE;
 528 #ifdef SLAP_MOD_INTERNAL
 529                 ml->sml_flags = SLAP_MOD_INTERNAL;
 530 #endif
 531                 ml->sml_values = keys;
 532                 ml->sml_nvalues = NULL;
 533
 534                 if (pi->smb_must_change)
 535                 {
 536                         ml = ch_malloc(sizeof(Modifications));
 537                         ml->sml_next = qpw->rs_mods;
 538                         qpw->rs_mods = ml;
 539
 540                         keys = ch_malloc( 2 * sizeof(struct berval) );
 541                         keys[0].bv_val = ch_malloc( STRLENOF( "9223372036854775807L" ) + 1 );
 542                         keys[0].bv_len = snprintf(keys[0].bv_val,
 543                                         STRLENOF( "9223372036854775807L" ) + 1,
 544                                         "%ld", slap_get_time() + pi->smb_must_change);
 545                         BER_BVZERO( &keys[1] );
 546
 547                         ml->sml_desc = ad_sambaPwdMustChange;
 548                         ml->sml_op = LDAP_MOD_REPLACE;
 549 #ifdef SLAP_MOD_INTERNAL
 550                         ml->sml_flags = SLAP_MOD_INTERNAL;
 551 #endif
 552                         ml->sml_values = keys;
 553                         ml->sml_nvalues = NULL;
 554                 }
 555         }
 556 #endif /* DO_SAMBA */
 557         be_entry_release_r( op, e );
 558
 559         return SLAP_CB_CONTINUE;
 560 }
 561
 562 static slap_overinst smbk5pwd;
 563
 564 /* back-config stuff */
 565 enum {
 566         PC_SMB_MUST_CHANGE = 1,
 567         PC_SMB_ENABLE
 568 };
 569
 570 static ConfigDriver smbk5pwd_cf_func;
 571
 572 /*
 573  * NOTE: uses OID arcs OLcfgOvAt:6 and OLcfgOvOc:6
 574  */
 575
 576 static ConfigTable smbk5pwd_cfats[] = {
 577         { "smbk5pwd-enable", "arg",
 578                 2, 0, 0, ARG_MAGIC|PC_SMB_ENABLE, smbk5pwd_cf_func,
 579                 "( OLcfgOvAt:6.1 NAME 'olcSmbK5PwdEnable' "
 580                 "DESC 'Modules to be enabled' "
 581                 "SYNTAX OMsDirectoryString )", NULL, NULL },
 582         { "smbk5pwd-must-change", "time",
 583                 2, 2, 0, ARG_MAGIC|ARG_INT|PC_SMB_MUST_CHANGE, smbk5pwd_cf_func,
 584                 "( OLcfgOvAt:6.2 NAME 'olcSmbK5PwdMustChange' "
 585                 "DESC 'Credentials validity interval' "
 586                 "SYNTAX OMsInteger SINGLE-VALUE )", NULL, NULL },
 587
 588         { NULL, NULL, 0, 0, 0, ARG_IGNORED }
 589 };
 590
 591 static ConfigOCs smbk5pwd_cfocs[] = {
 592         { "( OLcfgOvOc:6.1 "
 593                 "NAME 'olcSmbK5PwdConfig' "
 594                 "DESC 'smbk5pwd overlay configuration' "
 595                 "SUP olcOverlayConfig "
 596                 "MAY ( "
 597                         "olcSmbK5PwdEnable "
 598                         "$ olcSmbK5PwdMustChange "
 599                 ") )", Cft_Overlay, smbk5pwd_cfats },
 600
 601         { NULL, 0, NULL }
 602 };
 603
 604 /*
 605  * add here other functionalities; handle their initialization
 606  * as appropriate in smbk5pwd_modules_init().
 607  */
 608 static slap_verbmasks smbk5pwd_modules[] = {
 609         { BER_BVC( "krb5" ),            SMBK5PWD_F_KRB5 },
 610         { BER_BVC( "samba" ),           SMBK5PWD_F_SAMBA },
 611         { BER_BVNULL,                   -1 }
 612 };
 613
 614 static int
 615 smbk5pwd_cf_func( ConfigArgs *c )
 616 {
 617         slap_overinst   *on = (slap_overinst *)c->bi;
 618
 619         int             rc = 0;
 620         smbk5pwd_t      *pi = on->on_bi.bi_private;
 621
 622         if ( c->op == SLAP_CONFIG_EMIT ) {
 623                 switch( c->type ) {
 624                 case PC_SMB_MUST_CHANGE:
 625 #ifdef DO_SAMBA
 626                         c->value_int = pi->smb_must_change;
 627 #else /* ! DO_SAMBA */
 628                         c->value_int = 0;
 629 #endif /* ! DO_SAMBA */
 630                         break;
 631
 632                 case PC_SMB_ENABLE:
 633                         c->rvalue_vals = NULL;
 634                         if ( pi->mode ) {
 635                                 mask_to_verbs( smbk5pwd_modules, pi->mode, &c->rvalue_vals );
 636                                 if ( c->rvalue_vals == NULL ) {
 637                                         rc = 1;
 638                                 }
 639                         }
 640                         break;
 641
 642                 default:
 643                         assert( 0 );
 644                         rc = 1;
 645                 }
 646                 return rc;
 647
 648         } else if ( c->op == LDAP_MOD_DELETE ) {
 649                 switch( c->type ) {
 650                 case PC_SMB_MUST_CHANGE:
 651                         break;
 652
 653                 case PC_SMB_ENABLE:
 654                         if ( !c->line ) {
 655                                 pi->mode = 0;
 656
 657                         } else {
 658                                 slap_mask_t     m;
 659
 660                                 m = verb_to_mask( c->line, smbk5pwd_modules );
 661                                 pi->mode &= ~m;
 662                         }
 663                         break;
 664
 665                 default:
 666                         assert( 0 );
 667                         rc = 1;
 668                 }
 669                 return rc;
 670         }
 671
 672         switch( c->type ) {
 673         case PC_SMB_MUST_CHANGE:
 674 #ifdef DO_SAMBA
 675                 if ( c->value_int < 0 ) {
 676                         Debug( LDAP_DEBUG_ANY, "%s: smbk5pwd: "
 677                                 "<%s> invalid negative value \"%d\".",
 678                                 c->log, c->argv[ 0 ], 0 );
 679                         return 1;
 680                 }
 681                 pi->smb_must_change = c->value_int;
 682 #else /* ! DO_SAMBA */
 683                 Debug( LDAP_DEBUG_ANY, "%s: smbk5pwd: "
 684                         "<%s> only meaningful "
 685                         "when compiled with -DDO_SAMBA.\n",
 686                         c->log, c->argv[ 0 ], 0 );
 687                 return 1;
 688 #endif /* ! DO_SAMBA */
 689                 break;
 690
 691         case PC_SMB_ENABLE: {
 692                 slap_mask_t     mode = pi->mode, m;
 693
 694                 rc = verbs_to_mask( c->argc, c->argv, smbk5pwd_modules, &m );
 695                 if ( rc > 0 ) {
 696                         Debug( LDAP_DEBUG_ANY, "%s: smbk5pwd: "
 697                                 "<%s> unknown module \"%s\".\n",
 698                                 c->log, c->argv[ 0 ], c->argv[ rc ] );
 699                         return 1;
 700                 }
 701
 702                 /* we can hijack the smbk5pwd_t structure because
 703                  * from within the configuration, this is the only
 704                  * active thread. */
 705                 pi->mode |= m;
 706
 707 #ifndef DO_KRB5
 708                 if ( SMBK5PWD_DO_KRB5( pi ) ) {
 709                         Debug( LDAP_DEBUG_ANY, "%s: smbk5pwd: "
 710                                 "<%s> module \"%s\" only allowed when compiled with -DDO_KRB5.\n",
 711                                 c->log, c->argv[ 0 ], c->argv[ rc ] );
 712                         pi->mode = mode;
 713                         return 1;
 714                 }
 715 #endif /* ! DO_KRB5 */
 716
 717 #ifndef DO_SAMBA
 718                 if ( SMBK5PWD_DO_SAMBA( pi ) ) {
 719                         Debug( LDAP_DEBUG_ANY, "%s: smbk5pwd: "
 720                                 "<%s> module \"%s\" only allowed when compiled with -DDO_SAMBA.\n",
 721                                 c->log, c->argv[ 0 ], c->argv[ rc ] );
 722                         pi->mode = mode;
 723                         return 1;
 724                 }
 725 #endif /* ! DO_SAMBA */
 726
 727                 {
 728                         BackendDB       db = *c->be;
 729
 730                         /* Re-initialize the module, because
 731                          * the configuration might have changed */
 732                         db.bd_info = (BackendInfo *)on;
 733                         rc = smbk5pwd_modules_init( pi );
 734                         if ( rc ) {
 735                                 pi->mode = mode;
 736                                 return 1;
 737                         }
 738                 }
 739
 740                 } break;
 741
 742         default:
 743                 assert( 0 );
 744                 return 1;
 745         }
 746         return rc;
 747 }
 748
 749 static int
 750 smbk5pwd_modules_init( smbk5pwd_t *pi )
 751 {
 752         int             rc;
 753         const char      *text;
 754
 755 #ifdef DO_KRB5
 756         if ( SMBK5PWD_DO_KRB5( pi ) && oc_krb5KDCEntry == NULL ) {
 757                 krb5_error_code ret;
 758                 extern HDB      *_kadm5_s_get_db(void *);
 759
 760                 /* Make sure all of our necessary schema items are loaded */
 761                 oc_krb5KDCEntry = oc_find( "krb5KDCEntry" );
 762                 if ( !oc_krb5KDCEntry ) {
 763                         Debug( LDAP_DEBUG_ANY, "smbk5pwd: "
 764                                 "unable to find \"krb5KDCEntry\" objectClass.\n",
 765                                 0, 0, 0 );
 766                         rc = -1;
 767                         goto cleanup_krb5;
 768                 }
 769
 770                 ad_krb5Key = NULL;
 771                 rc = slap_str2ad( "krb5Key", &ad_krb5Key, &text );
 772                 if ( rc != LDAP_SUCCESS ) {
 773                         Debug( LDAP_DEBUG_ANY, "smbk5pwd: "
 774                                 "unable to find \"krb5Key\" attributeType: %s (%d).\n",
 775                                 text, rc, 0 );
 776                         goto cleanup_krb5;
 777                 }
 778
 779                 ad_krb5KeyVersionNumber = NULL;
 780                 rc = slap_str2ad( "krb5KeyVersionNumber", &ad_krb5KeyVersionNumber, &text );
 781                 if ( rc != LDAP_SUCCESS ) {
 782                         Debug( LDAP_DEBUG_ANY, "smbk5pwd: "
 783                                 "unable to find \"krb5KeyVersionNumber\" attributeType: %s (%d).\n",
 784                                 text, rc, 0 );
 785                         goto cleanup_krb5;
 786                 }
 787
 788                 ad_krb5PrincipalName = NULL;
 789                 rc = slap_str2ad( "krb5PrincipalName", &ad_krb5PrincipalName, &text );
 790                 if ( rc != LDAP_SUCCESS ) {
 791                         Debug( LDAP_DEBUG_ANY, "smbk5pwd: "
 792                                 "unable to find \"krb5PrincipalName\" attributeType: %s (%d).\n",
 793                                 text, rc, 0 );
 794                         goto cleanup_krb5;
 795                 }
 796
 797                 /* Initialize Kerberos context */
 798                 ret = krb5_init_context(&context);
 799                 if (ret) {
 800                         Debug( LDAP_DEBUG_ANY, "smbk5pwd: "
 801                                 "unable to initialize krb5 context.\n",
 802                                 0, 0, 0 );
 803                         rc = -1;
 804                         goto cleanup_krb5;
 805                 }
 806
 807                 if ( context == NULL ) {
 808                         ret = kadm5_s_init_with_password_ctx( context,
 809                                 KADM5_ADMIN_SERVICE,
 810                                 NULL,
 811                                 KADM5_ADMIN_SERVICE,
 812                                 &conf, 0, 0, &kadm_context );
 813
 814                         db = _kadm5_s_get_db( kadm_context );
 815                 }
 816
 817                 if ( 0 ) {
 818 cleanup_krb5:;
 819                         oc_krb5KDCEntry = NULL;
 820
 821                         return rc;
 822                 }
 823         }
 824 #endif /* DO_KRB5 */
 825
 826 #ifdef DO_SAMBA
 827         if ( SMBK5PWD_DO_SAMBA( pi ) && oc_sambaSamAccount == NULL ) {
 828                 oc_sambaSamAccount = oc_find( "sambaSamAccount" );
 829                 if ( !oc_sambaSamAccount ) {
 830                         Debug( LDAP_DEBUG_ANY, "smbk5pwd: "
 831                                 "unable to find \"sambaSamAccount\" objectClass.\n",
 832                                 0, 0, 0 );
 833                         rc = -1;
 834                         goto cleanup_samba;
 835                 }
 836
 837                 ad_sambaLMPassword = NULL;
 838                 rc = slap_str2ad( "sambaLMPassword", &ad_sambaLMPassword, &text );
 839                 if ( rc != LDAP_SUCCESS ) {
 840                         Debug( LDAP_DEBUG_ANY, "smbk5pwd: "
 841                                 "unable to find \"sambaLMPassword\" attributeType: %s (%d).\n",
 842                                 text, rc, 0 );
 843                         goto cleanup_samba;
 844                 }
 845
 846                 ad_sambaNTPassword = NULL;
 847                 rc = slap_str2ad( "sambaNTPassword", &ad_sambaNTPassword, &text );
 848                 if ( rc != LDAP_SUCCESS ) {
 849                         Debug( LDAP_DEBUG_ANY, "smbk5pwd: "
 850                                 "unable to find \"sambaNTPassword\" attributeType: %s (%d).\n",
 851                                 text, rc, 0 );
 852                         goto cleanup_samba;
 853                 }
 854
 855                 ad_sambaPwdLastSet = NULL;
 856                 if ( rc != LDAP_SUCCESS ) {
 857                         Debug( LDAP_DEBUG_ANY, "smbk5pwd: "
 858                                 "unable to find \"sambaPwdLastSet\" attributeType: %s (%d).\n",
 859                                 text, rc, 0 );
 860                         goto cleanup_samba;
 861                 }
 862
 863                 ad_sambaPwdMustChange = NULL;
 864                 if ( rc != LDAP_SUCCESS ) {
 865                         Debug( LDAP_DEBUG_ANY, "smbk5pwd: "
 866                                 "unable to find \"sambaPwdMustChange\" attributeType: %s (%d).\n",
 867                                 text, rc, 0 );
 868                         goto cleanup_samba;
 869                 }
 870
 871                 if ( 0 ) {
 872 cleanup_samba:;
 873                         oc_sambaSamAccount = NULL;
 874
 875
 876                         return rc;
 877                 }
 878         }
 879 #endif /* DO_SAMBA */
 880
 881         return 0;
 882 }
 883
 884 static int
 885 smbk5pwd_db_init(BackendDB *be)
 886 {
 887         slap_overinst   *on = (slap_overinst *)be->bd_info;
 888         smbk5pwd_t *pi;
 889
 890         pi = ch_calloc( 1, sizeof( smbk5pwd_t ) );
 891         if ( pi == NULL ) {
 892                 return 1;
 893         }
 894         on->on_bi.bi_private = (void *)pi;
 895
 896         return 0;
 897 }
 898
 899 static int
 900 smbk5pwd_db_open(BackendDB *be)
 901 {
 902         slap_overinst   *on = (slap_overinst *)be->bd_info;
 903         smbk5pwd_t      *pi = (smbk5pwd_t *)on->on_bi.bi_private;
 904
 905         int     rc;
 906
 907         if ( pi->mode == 0 ) {
 908                 pi->mode = SMBK5PWD_F_ALL;
 909         }
 910
 911         rc = smbk5pwd_modules_init( pi );
 912         if ( rc ) {
 913                 return rc;
 914         }
 915
 916         return 0;
 917 }
 918
 919 static int
 920 smbk5pwd_db_destroy(BackendDB *be)
 921 {
 922         slap_overinst   *on = (slap_overinst *)be->bd_info;
 923         smbk5pwd_t      *pi = (smbk5pwd_t *)on->on_bi.bi_private;
 924
 925         if ( pi ) {
 926                 ch_free( pi );
 927         }
 928
 929         return 0;
 930 }
 931
 932 int
 933 smbk5pwd_initialize(void)
 934 {
 935         int             rc;
 936
 937         smbk5pwd.on_bi.bi_type = "smbk5pwd";
 938
 939         smbk5pwd.on_bi.bi_db_init = smbk5pwd_db_init;
 940         smbk5pwd.on_bi.bi_db_open = smbk5pwd_db_open;
 941         smbk5pwd.on_bi.bi_db_destroy = smbk5pwd_db_destroy;
 942
 943         smbk5pwd.on_bi.bi_extended = smbk5pwd_exop_passwd;
 944
 945 #ifdef DO_KRB5
 946         smbk5pwd.on_bi.bi_op_bind = smbk5pwd_op_bind;
 947
 948         lutil_passwd_add( (struct berval *)&k5key_scheme, k5key_chk, k5key_hash );
 949 #endif
 950
 951         smbk5pwd.on_bi.bi_cf_ocs = smbk5pwd_cfocs;
 952
 953         rc = config_register_schema( smbk5pwd_cfats, smbk5pwd_cfocs );
 954         if ( rc ) {
 955                 return rc;
 956         }
 957
 958         return overlay_register( &smbk5pwd );
 959 }
 960
 961 #if SLAPD_OVER_SMBK5PWD == SLAPD_MOD_DYNAMIC
 962 int init_module(int argc, char *argv[]) {
 963         return smbk5pwd_initialize();
 964 }
 965 #endif
 966
 967 #endif /* defined(SLAPD_OVER_SMBK5PWD) */