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