1/* tls.c - Handle tls/ssl. */ 2/* $OpenLDAP$ */ 3/* This work is part of OpenLDAP Software <http://www.openldap.org/>. 4 * 5 * Copyright 1998-2011 The OpenLDAP Foundation. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted only as authorized by the OpenLDAP 10 * Public License. 11 * 12 * A copy of this license is available in the file LICENSE in the 13 * top-level directory of the distribution or, alternatively, at 14 * <http://www.OpenLDAP.org/license.html>. 15 */ 16/* ACKNOWLEDGEMENTS: restructured by Howard Chu. 17 */ 18 19#include "portable.h" 20#include "ldap_config.h" 21 22#include <stdio.h> 23 24#include <ac/stdlib.h> 25#include <ac/errno.h> 26#include <ac/socket.h> 27#include <ac/string.h> 28#include <ac/ctype.h> 29#include <ac/time.h> 30#include <ac/unistd.h> 31#include <ac/param.h> 32#include <ac/dirent.h> 33 34#include "ldap-int.h" 35 36#ifdef HAVE_TLS 37 38#include "ldap-tls.h" 39 40static tls_impl *tls_imp = &ldap_int_tls_impl; 41#define HAS_TLS( sb ) ber_sockbuf_ctrl( sb, LBER_SB_OPT_HAS_IO, \ 42 (void *)tls_imp->ti_sbio ) 43 44#if defined(__APPLE__) && !defined(HAVE_SECURE_TRANSPORT) 45#include <Security/Security.h> 46#include <syslog.h> 47#include <sys/stat.h> 48 49static void tls_get_cert_from_keychain( char *host ); 50#endif 51 52#endif /* HAVE_TLS */ 53 54/* RFC2459 minimum required set of supported attribute types 55 * in a certificate DN 56 */ 57typedef struct oid_name { 58 struct berval oid; 59 struct berval name; 60} oid_name; 61 62static oid_name oids[] = { 63 { BER_BVC("2.5.4.3"), BER_BVC("cn") }, 64 { BER_BVC("2.5.4.4"), BER_BVC("sn") }, 65 { BER_BVC("2.5.4.6"), BER_BVC("c") }, 66 { BER_BVC("2.5.4.7"), BER_BVC("l") }, 67 { BER_BVC("2.5.4.8"), BER_BVC("st") }, 68 { BER_BVC("2.5.4.10"), BER_BVC("o") }, 69 { BER_BVC("2.5.4.11"), BER_BVC("ou") }, 70 { BER_BVC("2.5.4.12"), BER_BVC("title") }, 71 { BER_BVC("2.5.4.41"), BER_BVC("name") }, 72 { BER_BVC("2.5.4.42"), BER_BVC("givenName") }, 73 { BER_BVC("2.5.4.43"), BER_BVC("initials") }, 74 { BER_BVC("2.5.4.44"), BER_BVC("generationQualifier") }, 75 { BER_BVC("2.5.4.46"), BER_BVC("dnQualifier") }, 76 { BER_BVC("1.2.840.113549.1.9.1"), BER_BVC("email") }, 77 { BER_BVC("0.9.2342.19200300.100.1.25"), BER_BVC("dc") }, 78 { BER_BVNULL, BER_BVNULL } 79}; 80 81#ifdef HAVE_TLS 82 83void 84ldap_pvt_tls_ctx_free ( void *c ) 85{ 86 if ( !c ) return; 87 tls_imp->ti_ctx_free( c ); 88} 89 90static void 91tls_ctx_ref( tls_ctx *ctx ) 92{ 93 if ( !ctx ) return; 94 95 tls_imp->ti_ctx_ref( ctx ); 96} 97 98#ifdef LDAP_R_COMPILE 99/* 100 * an extra mutex for the default ctx. 101 */ 102static ldap_pvt_thread_mutex_t tls_def_ctx_mutex; 103#endif 104 105void 106ldap_int_tls_destroy( struct ldapoptions *lo ) 107{ 108 if ( lo->ldo_tls_ctx ) { 109 ldap_pvt_tls_ctx_free( lo->ldo_tls_ctx ); 110 lo->ldo_tls_ctx = NULL; 111 } 112 113#ifdef HAVE_SECURE_TRANSPORT 114 if ( lo->ldo_tls_identity ) { 115 LDAP_FREE( lo->ldo_tls_identity ); 116 lo->ldo_tls_identity = NULL; 117 } 118 if ( lo->ldo_tls_trusted_certs ) { 119 LDAP_FREE( lo->ldo_tls_trusted_certs ); 120 lo->ldo_tls_trusted_certs = NULL; 121 } 122#else 123 if ( lo->ldo_tls_certfile ) { 124 LDAP_FREE( lo->ldo_tls_certfile ); 125 lo->ldo_tls_certfile = NULL; 126 } 127 if ( lo->ldo_tls_keyfile ) { 128 LDAP_FREE( lo->ldo_tls_keyfile ); 129 lo->ldo_tls_keyfile = NULL; 130 } 131#endif 132 if ( lo->ldo_tls_dhfile ) { 133 LDAP_FREE( lo->ldo_tls_dhfile ); 134 lo->ldo_tls_dhfile = NULL; 135 } 136#ifndef HAVE_SECURE_TRANSPORT 137 if ( lo->ldo_tls_cacertfile ) { 138 LDAP_FREE( lo->ldo_tls_cacertfile ); 139 lo->ldo_tls_cacertfile = NULL; 140 } 141 if ( lo->ldo_tls_cacertdir ) { 142 LDAP_FREE( lo->ldo_tls_cacertdir ); 143 lo->ldo_tls_cacertdir = NULL; 144 } 145#endif 146 if ( lo->ldo_tls_ciphersuite ) { 147 LDAP_FREE( lo->ldo_tls_ciphersuite ); 148 lo->ldo_tls_ciphersuite = NULL; 149 } 150 if ( lo->ldo_tls_crlfile ) { 151 LDAP_FREE( lo->ldo_tls_crlfile ); 152 lo->ldo_tls_crlfile = NULL; 153 } 154#if defined(__APPLE__) && !defined(HAVE_SECURE_TRANSPORT) 155 if ( lo->ldo_tls_cert_ref ) { 156 CFRelease( lo->ldo_tls_cert_ref ); 157 lo->ldo_tls_cert_ref = NULL; 158 } 159#endif 160} 161 162/* 163 * Tear down the TLS subsystem. Should only be called once. 164 */ 165void 166ldap_pvt_tls_destroy( void ) 167{ 168 struct ldapoptions *lo = LDAP_INT_GLOBAL_OPT(); 169 170 ldap_int_tls_destroy( lo ); 171 172 tls_imp->ti_tls_destroy(); 173} 174 175/* 176 * Initialize a particular TLS implementation. 177 * Called once per implementation. 178 */ 179static int 180tls_init(tls_impl *impl ) 181{ 182 static int tls_initialized = 0; 183 184 if ( !tls_initialized++ ) { 185#ifdef LDAP_R_COMPILE 186 ldap_pvt_thread_mutex_init( &tls_def_ctx_mutex ); 187#endif 188 } 189 190 if ( impl->ti_inited++ ) return 0; 191 192#ifdef LDAP_R_COMPILE 193 impl->ti_thr_init(); 194#endif 195 return impl->ti_tls_init(); 196} 197 198/* 199 * Initialize TLS subsystem. Called once per implementation. 200 */ 201int 202ldap_pvt_tls_init( void ) 203{ 204 return tls_init( tls_imp ); 205} 206 207/* 208 * initialize a new TLS context 209 */ 210static int 211ldap_int_tls_init_ctx( struct ldapoptions *lo, int is_server ) 212{ 213 int rc = 0; 214 tls_impl *ti = tls_imp; 215 struct ldaptls lts = lo->ldo_tls_info; 216 217 if ( lo->ldo_tls_ctx ) 218 return 0; 219 220 tls_init( ti ); 221#ifdef __APPLE__ 222# ifdef HAVE_SECURE_TRANSPORT 223 if (is_server && !lts.lt_identity) 224 return LDAP_NOT_SUPPORTED; 225# else 226 if(is_server && !lts.lt_server_ident_ref_name) 227 { 228 return LDAP_NOT_SUPPORTED; 229 } 230# endif 231#else 232 if ( is_server && !lts.lt_certfile && !lts.lt_keyfile && 233 !lts.lt_cacertfile && !lts.lt_cacertdir ) { 234 /* minimum configuration not provided */ 235 return LDAP_NOT_SUPPORTED; 236 } 237#endif 238 239#ifdef HAVE_EBCDIC 240 /* This ASCII/EBCDIC handling is a real pain! */ 241 if ( lts.lt_ciphersuite ) { 242 lts.lt_ciphersuite = LDAP_STRDUP( lts.lt_ciphersuite ); 243 __atoe( lts.lt_ciphersuite ); 244 } 245 if ( lts.lt_cacertfile ) { 246 lts.lt_cacertfile = LDAP_STRDUP( lts.lt_cacertfile ); 247 __atoe( lts.lt_cacertfile ); 248 } 249 if ( lts.lt_certfile ) { 250 lts.lt_certfile = LDAP_STRDUP( lts.lt_certfile ); 251 __atoe( lts.lt_certfile ); 252 } 253 if ( lts.lt_keyfile ) { 254 lts.lt_keyfile = LDAP_STRDUP( lts.lt_keyfile ); 255 __atoe( lts.lt_keyfile ); 256 } 257 if ( lts.lt_crlfile ) { 258 lts.lt_crlfile = LDAP_STRDUP( lts.lt_crlfile ); 259 __atoe( lts.lt_crlfile ); 260 } 261 if ( lts.lt_cacertdir ) { 262 lts.lt_cacertdir = LDAP_STRDUP( lts.lt_cacertdir ); 263 __atoe( lts.lt_cacertdir ); 264 } 265 if ( lts.lt_dhfile ) { 266 lts.lt_dhfile = LDAP_STRDUP( lts.lt_dhfile ); 267 __atoe( lts.lt_dhfile ); 268 } 269#endif 270 lo->ldo_tls_ctx = ti->ti_ctx_new( lo ); 271 if ( lo->ldo_tls_ctx == NULL ) { 272 Debug( LDAP_DEBUG_ANY, 273 "TLS: could not allocate default ctx.\n", 274 0,0,0); 275 rc = -1; 276 goto error_exit; 277 } 278 279 rc = ti->ti_ctx_init( lo, <s, is_server ); 280 281error_exit: 282 if ( rc < 0 && lo->ldo_tls_ctx != NULL ) { 283 ldap_pvt_tls_ctx_free( lo->ldo_tls_ctx ); 284 lo->ldo_tls_ctx = NULL; 285 } 286#ifdef HAVE_EBCDIC 287 LDAP_FREE( lts.lt_ciphersuite ); 288 LDAP_FREE( lts.lt_cacertfile ); 289 LDAP_FREE( lts.lt_certfile ); 290 LDAP_FREE( lts.lt_keyfile ); 291 LDAP_FREE( lts.lt_crlfile ); 292 LDAP_FREE( lts.lt_cacertdir ); 293 LDAP_FREE( lts.lt_dhfile ); 294#endif 295 return rc; 296} 297 298/* 299 * initialize the default context 300 */ 301int 302ldap_pvt_tls_init_def_ctx( int is_server ) 303{ 304 struct ldapoptions *lo = LDAP_INT_GLOBAL_OPT(); 305 int rc; 306 LDAP_MUTEX_LOCK( &tls_def_ctx_mutex ); 307 rc = ldap_int_tls_init_ctx( lo, is_server ); 308 LDAP_MUTEX_UNLOCK( &tls_def_ctx_mutex ); 309 return rc; 310} 311 312static tls_session * 313alloc_handle( void *ctx_arg, int is_server ) 314{ 315 tls_ctx *ctx; 316 tls_session *ssl; 317 318 if ( ctx_arg ) { 319 ctx = ctx_arg; 320 } else { 321 struct ldapoptions *lo = LDAP_INT_GLOBAL_OPT(); 322 if ( ldap_pvt_tls_init_def_ctx( is_server ) < 0 ) return NULL; 323 ctx = lo->ldo_tls_ctx; 324 } 325 326 ssl = tls_imp->ti_session_new( ctx, is_server ); 327 if ( ssl == NULL ) { 328 Debug( LDAP_DEBUG_ANY,"TLS: can't create ssl handle.\n",0,0,0); 329 return NULL; 330 } 331 return ssl; 332} 333 334static int 335update_flags( Sockbuf *sb, tls_session * ssl, int rc ) 336{ 337 sb->sb_trans_needs_read = 0; 338 sb->sb_trans_needs_write = 0; 339 340 return tls_imp->ti_session_upflags( sb, ssl, rc ); 341} 342 343/* 344 * Call this to do a TLS connect on a sockbuf. ctx_arg can be 345 * a SSL_CTX * or NULL, in which case the default ctx is used. 346 * 347 * Return value: 348 * 349 * 0 - Success. Connection is ready for communication. 350 * <0 - Error. Can't create a TLS stream. 351 * >0 - Partial success. 352 * Do a select (using information from lber_pvt_sb_needs_{read,write} 353 * and call again. 354 */ 355 356static int 357ldap_int_tls_connect( LDAP *ld, LDAPConn *conn ) 358{ 359 Sockbuf *sb = conn->lconn_sb; 360 int err; 361 tls_session *ssl = NULL; 362 363 if ( HAS_TLS( sb )) { 364 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_SSL, (void *)&ssl ); 365 } else { 366 struct ldapoptions *lo; 367 tls_ctx *ctx; 368 369 ctx = ld->ld_options.ldo_tls_ctx; 370 371 ssl = alloc_handle( ctx, 0 ); 372 373 if ( ssl == NULL ) return -1; 374 375#ifdef LDAP_DEBUG 376 ber_sockbuf_add_io( sb, &ber_sockbuf_io_debug, 377 LBER_SBIOD_LEVEL_TRANSPORT, (void *)"tls_" ); 378#endif 379 ber_sockbuf_add_io( sb, tls_imp->ti_sbio, 380 LBER_SBIOD_LEVEL_TRANSPORT, (void *)ssl ); 381 382 lo = LDAP_INT_GLOBAL_OPT(); 383 if( ctx == NULL ) { 384 ctx = lo->ldo_tls_ctx; 385 ld->ld_options.ldo_tls_ctx = ctx; 386 tls_ctx_ref( ctx ); 387 } 388 if ( ld->ld_options.ldo_tls_connect_cb ) 389 ld->ld_options.ldo_tls_connect_cb( ld, ssl, ctx, 390 ld->ld_options.ldo_tls_connect_arg ); 391 if ( lo && lo->ldo_tls_connect_cb && lo->ldo_tls_connect_cb != 392 ld->ld_options.ldo_tls_connect_cb ) 393 lo->ldo_tls_connect_cb( ld, ssl, ctx, lo->ldo_tls_connect_arg ); 394 } 395 396 err = tls_imp->ti_session_connect( ld, ssl ); 397 398#ifdef HAVE_WINSOCK 399 errno = WSAGetLastError(); 400#endif 401 402 if ( err < 0 ) 403 { 404 char buf[256], *msg; 405 if ( update_flags( sb, ssl, err )) { 406 return 1; 407 } 408 409 msg = tls_imp->ti_session_errmsg( ssl, err, buf, sizeof(buf) ); 410 if ( msg ) { 411 if ( ld->ld_error ) { 412 LDAP_FREE( ld->ld_error ); 413 } 414 ld->ld_error = LDAP_STRDUP( msg ); 415#ifdef HAVE_EBCDIC 416 if ( ld->ld_error ) __etoa(ld->ld_error); 417#endif 418 } 419 420 Debug( LDAP_DEBUG_ANY,"TLS: can't connect: %s.\n", 421 ld->ld_error ? ld->ld_error : "" ,0,0); 422 423 ber_sockbuf_remove_io( sb, tls_imp->ti_sbio, 424 LBER_SBIOD_LEVEL_TRANSPORT ); 425#ifdef LDAP_DEBUG 426 ber_sockbuf_remove_io( sb, &ber_sockbuf_io_debug, 427 LBER_SBIOD_LEVEL_TRANSPORT ); 428#endif 429 return -1; 430 } 431 432 return 0; 433} 434 435/* 436 * Call this to do a TLS accept on a sockbuf. 437 * Everything else is the same as with tls_connect. 438 */ 439int 440ldap_pvt_tls_accept( Sockbuf *sb, void *ctx_arg ) 441{ 442 int err; 443 tls_session *ssl = NULL; 444 445 if ( HAS_TLS( sb )) { 446 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_SSL, (void *)&ssl ); 447 } else { 448 ssl = alloc_handle( ctx_arg, 1 ); 449 if ( ssl == NULL ) return -1; 450 451#ifdef LDAP_DEBUG 452 ber_sockbuf_add_io( sb, &ber_sockbuf_io_debug, 453 LBER_SBIOD_LEVEL_TRANSPORT, (void *)"tls_" ); 454#endif 455 ber_sockbuf_add_io( sb, tls_imp->ti_sbio, 456 LBER_SBIOD_LEVEL_TRANSPORT, (void *)ssl ); 457 } 458 459 err = tls_imp->ti_session_accept( ssl ); 460 461#ifdef HAVE_WINSOCK 462 errno = WSAGetLastError(); 463#endif 464 465 if ( err < 0 ) 466 { 467 if ( update_flags( sb, ssl, err )) return 1; 468 469 if ( DebugTest( LDAP_DEBUG_ANY ) ) { 470 char buf[256], *msg; 471 msg = tls_imp->ti_session_errmsg( ssl, err, buf, sizeof(buf) ); 472 Debug( LDAP_DEBUG_ANY,"TLS: can't accept: %s.\n", 473 msg ? msg : "(unknown)", 0, 0 ); 474 } 475 476 ber_sockbuf_remove_io( sb, tls_imp->ti_sbio, 477 LBER_SBIOD_LEVEL_TRANSPORT ); 478#ifdef LDAP_DEBUG 479 ber_sockbuf_remove_io( sb, &ber_sockbuf_io_debug, 480 LBER_SBIOD_LEVEL_TRANSPORT ); 481#endif 482 return -1; 483 } 484 return 0; 485} 486 487int 488ldap_pvt_tls_inplace ( Sockbuf *sb ) 489{ 490 return HAS_TLS( sb ) ? 1 : 0; 491} 492 493int 494ldap_tls_inplace( LDAP *ld ) 495{ 496 Sockbuf *sb = NULL; 497 498 if ( ld->ld_defconn && ld->ld_defconn->lconn_sb ) { 499 sb = ld->ld_defconn->lconn_sb; 500 501 } else if ( ld->ld_sb ) { 502 sb = ld->ld_sb; 503 504 } else { 505 return 0; 506 } 507 508 return ldap_pvt_tls_inplace( sb ); 509} 510 511int 512ldap_pvt_tls_get_peer_dn( void *s, struct berval *dn, 513 LDAPDN_rewrite_dummy *func, unsigned flags ) 514{ 515 tls_session *session = s; 516 struct berval bvdn; 517 int rc; 518 519 rc = tls_imp->ti_session_peer_dn( session, &bvdn ); 520 if ( rc ) return rc; 521 522 rc = ldap_X509dn2bv( &bvdn, dn, 523 (LDAPDN_rewrite_func *)func, flags); 524 return rc; 525} 526 527int 528ldap_pvt_tls_check_hostname( LDAP *ld, void *s, const char *name_in ) 529{ 530 tls_session *session = s; 531 532 return tls_imp->ti_session_chkhost( ld, session, name_in ); 533} 534 535int 536ldap_int_tls_config( LDAP *ld, int option, const char *arg ) 537{ 538 int i; 539 540 switch( option ) { 541#ifdef HAVE_SECURE_TRANSPORT 542 case LDAP_OPT_X_TLS_IDENTITY: 543 case LDAP_OPT_X_TLS_TRUSTED_CERTS: 544#else 545 case LDAP_OPT_X_TLS_CACERTFILE: 546 case LDAP_OPT_X_TLS_CACERTDIR: 547 case LDAP_OPT_X_TLS_CERTFILE: 548 case LDAP_OPT_X_TLS_KEYFILE: 549 case LDAP_OPT_X_TLS_RANDOM_FILE: 550#endif 551 case LDAP_OPT_X_TLS_CIPHER_SUITE: 552 case LDAP_OPT_X_TLS_DHFILE: 553 case LDAP_OPT_X_TLS_CRLFILE: /* GnuTLS only */ 554 return ldap_pvt_tls_set_option( ld, option, (void *) arg ); 555 556 case LDAP_OPT_X_TLS_REQUIRE_CERT: 557 case LDAP_OPT_X_TLS: 558 i = -1; 559 if ( strcasecmp( arg, "never" ) == 0 ) { 560 i = LDAP_OPT_X_TLS_NEVER ; 561 562 } else if ( strcasecmp( arg, "demand" ) == 0 ) { 563 i = LDAP_OPT_X_TLS_DEMAND ; 564 565 } else if ( strcasecmp( arg, "allow" ) == 0 ) { 566 i = LDAP_OPT_X_TLS_ALLOW ; 567 568 } else if ( strcasecmp( arg, "try" ) == 0 ) { 569 i = LDAP_OPT_X_TLS_TRY ; 570 571 } else if ( ( strcasecmp( arg, "hard" ) == 0 ) || 572 ( strcasecmp( arg, "on" ) == 0 ) || 573 ( strcasecmp( arg, "yes" ) == 0) || 574 ( strcasecmp( arg, "true" ) == 0 ) ) 575 { 576 i = LDAP_OPT_X_TLS_HARD ; 577 } 578 579 if (i >= 0) { 580 return ldap_pvt_tls_set_option( ld, option, &i ); 581 } 582 return -1; 583 case LDAP_OPT_X_TLS_PROTOCOL_MIN: { 584 char *next; 585 long l; 586 l = strtol( arg, &next, 10 ); 587 if ( l < 0 || l > 0xff || next == arg || 588 ( *next != '\0' && *next != '.' ) ) 589 return -1; 590 i = l << 8; 591 if (*next == '.') { 592 arg = next + 1; 593 l = strtol( arg, &next, 10 ); 594 if ( l < 0 || l > 0xff || next == arg || *next != '\0' ) 595 return -1; 596 i += l; 597 } 598 return ldap_pvt_tls_set_option( ld, option, &i ); 599 } 600#if defined(HAVE_OPENSSL_CRL) || defined(HAVE_SECURE_TRANSPORT) 601 case LDAP_OPT_X_TLS_CRLCHECK: /* OpenSSL and SecureTransport */ 602 i = -1; 603 if ( strcasecmp( arg, "none" ) == 0 ) { 604 i = LDAP_OPT_X_TLS_CRL_NONE ; 605 } else if ( strcasecmp( arg, "peer" ) == 0 ) { 606 i = LDAP_OPT_X_TLS_CRL_PEER ; 607 } else if ( strcasecmp( arg, "all" ) == 0 ) { 608 i = LDAP_OPT_X_TLS_CRL_ALL ; 609 } 610 if (i >= 0) { 611 return ldap_pvt_tls_set_option( ld, option, &i ); 612 } 613 return -1; 614#endif 615 } 616 return -1; 617} 618 619int 620ldap_pvt_tls_get_option( LDAP *ld, int option, void *arg ) 621{ 622 struct ldapoptions *lo; 623 624 if( option == LDAP_OPT_X_TLS_PACKAGE ) { 625 *(char **)arg = LDAP_STRDUP( tls_imp->ti_name ); 626 return 0; 627 } 628 629 if( ld != NULL ) { 630 assert( LDAP_VALID( ld ) ); 631 632 if( !LDAP_VALID( ld ) ) { 633 return LDAP_OPT_ERROR; 634 } 635 636 lo = &ld->ld_options; 637 638 } else { 639 /* Get pointer to global option structure */ 640 lo = LDAP_INT_GLOBAL_OPT(); 641 if ( lo == NULL ) { 642 return LDAP_NO_MEMORY; 643 } 644 } 645 646 switch( option ) { 647 case LDAP_OPT_X_TLS: 648 *(int *)arg = lo->ldo_tls_mode; 649 break; 650 case LDAP_OPT_X_TLS_CTX: 651 *(void **)arg = lo->ldo_tls_ctx; 652 if ( lo->ldo_tls_ctx ) { 653 tls_ctx_ref( lo->ldo_tls_ctx ); 654 } 655 break; 656#ifdef HAVE_SECURE_TRANSPORT 657 case LDAP_OPT_X_TLS_IDENTITY: 658 *(char **)arg = lo->ldo_tls_identity ? 659 LDAP_STRDUP( lo->ldo_tls_identity ) : NULL; 660 break; 661 case LDAP_OPT_X_TLS_TRUSTED_CERTS: 662 *(char **)arg = lo->ldo_tls_trusted_certs ? 663 LDAP_STRDUP( lo->ldo_tls_trusted_certs ) : NULL; 664 break; 665#else 666 case LDAP_OPT_X_TLS_CACERTFILE: 667 *(char **)arg = lo->ldo_tls_cacertfile ? 668 LDAP_STRDUP( lo->ldo_tls_cacertfile ) : NULL; 669 break; 670 case LDAP_OPT_X_TLS_CACERTDIR: 671 *(char **)arg = lo->ldo_tls_cacertdir ? 672 LDAP_STRDUP( lo->ldo_tls_cacertdir ) : NULL; 673 break; 674 case LDAP_OPT_X_TLS_CERTFILE: 675 *(char **)arg = lo->ldo_tls_certfile ? 676 LDAP_STRDUP( lo->ldo_tls_certfile ) : NULL; 677 break; 678 case LDAP_OPT_X_TLS_KEYFILE: 679 *(char **)arg = lo->ldo_tls_keyfile ? 680 LDAP_STRDUP( lo->ldo_tls_keyfile ) : NULL; 681 break; 682#endif 683 case LDAP_OPT_X_TLS_DHFILE: 684 *(char **)arg = lo->ldo_tls_dhfile ? 685 LDAP_STRDUP( lo->ldo_tls_dhfile ) : NULL; 686 break; 687 case LDAP_OPT_X_TLS_CRLFILE: /* GnuTLS only */ 688 *(char **)arg = lo->ldo_tls_crlfile ? 689 LDAP_STRDUP( lo->ldo_tls_crlfile ) : NULL; 690 break; 691 case LDAP_OPT_X_TLS_REQUIRE_CERT: 692 *(int *)arg = lo->ldo_tls_require_cert; 693 break; 694#if defined(HAVE_OPENSSL_CRL) || defined(HAVE_SECURE_TRANSPORT) 695 case LDAP_OPT_X_TLS_CRLCHECK: /* OpenSSL and SecureTransport */ 696 *(int *)arg = lo->ldo_tls_crlcheck; 697 break; 698#endif 699 case LDAP_OPT_X_TLS_CIPHER_SUITE: 700 *(char **)arg = lo->ldo_tls_ciphersuite ? 701 LDAP_STRDUP( lo->ldo_tls_ciphersuite ) : NULL; 702 break; 703 case LDAP_OPT_X_TLS_PROTOCOL_MIN: 704 *(int *)arg = lo->ldo_tls_protocol_min; 705 break; 706#ifndef HAVE_SECURE_TRANSPORT 707 case LDAP_OPT_X_TLS_RANDOM_FILE: 708 *(char **)arg = lo->ldo_tls_randfile ? 709 LDAP_STRDUP( lo->ldo_tls_randfile ) : NULL; 710 break; 711#endif 712 case LDAP_OPT_X_TLS_SSL_CTX: { 713 void *retval = 0; 714 if ( ld != NULL ) { 715 LDAPConn *conn = ld->ld_defconn; 716 if ( conn != NULL ) { 717 Sockbuf *sb = conn->lconn_sb; 718 retval = ldap_pvt_tls_sb_ctx( sb ); 719 } 720 } 721 *(void **)arg = retval; 722 break; 723 } 724 case LDAP_OPT_X_TLS_CONNECT_CB: 725 *(LDAP_TLS_CONNECT_CB **)arg = lo->ldo_tls_connect_cb; 726 break; 727 case LDAP_OPT_X_TLS_CONNECT_ARG: 728 *(void **)arg = lo->ldo_tls_connect_arg; 729 break; 730 731#if defined(__APPLE__) && !defined(HAVE_SECURE_TRANSPORT) 732 case LDAP_OPT_X_TLS_CERT_IDENTITY: 733 *(char **)arg = lo->ldo_tls_server_ident_ref_name ? 734 LDAP_STRDUP( lo->ldo_tls_server_ident_ref_name) : NULL; 735 break; 736#endif 737 738 default: 739 return -1; 740 } 741 return 0; 742} 743 744int 745ldap_pvt_tls_set_option( LDAP *ld, int option, void *arg ) 746{ 747 struct ldapoptions *lo; 748 749 if( ld != NULL ) { 750 assert( LDAP_VALID( ld ) ); 751 752 if( !LDAP_VALID( ld ) ) { 753 return LDAP_OPT_ERROR; 754 } 755 756 lo = &ld->ld_options; 757 758 } else { 759 /* Get pointer to global option structure */ 760 lo = LDAP_INT_GLOBAL_OPT(); 761 if ( lo == NULL ) { 762 return LDAP_NO_MEMORY; 763 } 764 } 765 766 switch( option ) { 767 case LDAP_OPT_X_TLS: 768 if ( !arg ) return -1; 769 770 switch( *(int *) arg ) { 771 case LDAP_OPT_X_TLS_NEVER: 772 case LDAP_OPT_X_TLS_DEMAND: 773 case LDAP_OPT_X_TLS_ALLOW: 774 case LDAP_OPT_X_TLS_TRY: 775 case LDAP_OPT_X_TLS_HARD: 776 if (lo != NULL) { 777 lo->ldo_tls_mode = *(int *)arg; 778 } 779 780 return 0; 781 } 782 return -1; 783 784 case LDAP_OPT_X_TLS_CTX: 785 if ( lo->ldo_tls_ctx ) 786 ldap_pvt_tls_ctx_free( lo->ldo_tls_ctx ); 787 lo->ldo_tls_ctx = arg; 788 tls_ctx_ref( lo->ldo_tls_ctx ); 789 return 0; 790 case LDAP_OPT_X_TLS_CONNECT_CB: 791 lo->ldo_tls_connect_cb = (LDAP_TLS_CONNECT_CB *)arg; 792 return 0; 793 case LDAP_OPT_X_TLS_CONNECT_ARG: 794 lo->ldo_tls_connect_arg = arg; 795 return 0; 796#ifdef HAVE_SECURE_TRANSPORT 797 case LDAP_OPT_X_TLS_IDENTITY: 798 if ( lo->ldo_tls_identity ) LDAP_FREE( lo->ldo_tls_identity ); 799 lo->ldo_tls_identity = arg ? LDAP_STRDUP( (char *) arg ) : NULL; 800 return 0; 801 case LDAP_OPT_X_TLS_TRUSTED_CERTS: 802 if ( lo->ldo_tls_trusted_certs ) LDAP_FREE( lo->ldo_tls_trusted_certs ); 803 lo->ldo_tls_trusted_certs = arg ? LDAP_STRDUP( (char *) arg ) : NULL; 804 return 0; 805#else 806 case LDAP_OPT_X_TLS_CACERTFILE: 807 if ( lo->ldo_tls_cacertfile ) LDAP_FREE( lo->ldo_tls_cacertfile ); 808 lo->ldo_tls_cacertfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL; 809 return 0; 810 case LDAP_OPT_X_TLS_CACERTDIR: 811 if ( lo->ldo_tls_cacertdir ) LDAP_FREE( lo->ldo_tls_cacertdir ); 812 lo->ldo_tls_cacertdir = arg ? LDAP_STRDUP( (char *) arg ) : NULL; 813 return 0; 814 case LDAP_OPT_X_TLS_CERTFILE: 815 if ( lo->ldo_tls_certfile ) LDAP_FREE( lo->ldo_tls_certfile ); 816 lo->ldo_tls_certfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL; 817 return 0; 818 case LDAP_OPT_X_TLS_KEYFILE: 819 if ( lo->ldo_tls_keyfile ) LDAP_FREE( lo->ldo_tls_keyfile ); 820 lo->ldo_tls_keyfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL; 821 return 0; 822#endif 823 case LDAP_OPT_X_TLS_DHFILE: 824 if ( lo->ldo_tls_dhfile ) LDAP_FREE( lo->ldo_tls_dhfile ); 825 lo->ldo_tls_dhfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL; 826 return 0; 827 case LDAP_OPT_X_TLS_CRLFILE: /* GnuTLS only */ 828 if ( lo->ldo_tls_crlfile ) LDAP_FREE( lo->ldo_tls_crlfile ); 829 lo->ldo_tls_crlfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL; 830 return 0; 831 case LDAP_OPT_X_TLS_REQUIRE_CERT: 832 if ( !arg ) return -1; 833 switch( *(int *) arg ) { 834 case LDAP_OPT_X_TLS_NEVER: 835 case LDAP_OPT_X_TLS_DEMAND: 836 case LDAP_OPT_X_TLS_ALLOW: 837 case LDAP_OPT_X_TLS_TRY: 838 case LDAP_OPT_X_TLS_HARD: 839 lo->ldo_tls_require_cert = * (int *) arg; 840 return 0; 841 } 842 return -1; 843#if defined(HAVE_OPENSSL_CRL) || defined(HAVE_SECURE_TRANSPORT) 844 case LDAP_OPT_X_TLS_CRLCHECK: /* OpenSSL and SecureTransport */ 845 if ( !arg ) return -1; 846 switch( *(int *) arg ) { 847 case LDAP_OPT_X_TLS_CRL_NONE: 848 case LDAP_OPT_X_TLS_CRL_PEER: 849 case LDAP_OPT_X_TLS_CRL_ALL: 850 lo->ldo_tls_crlcheck = * (int *) arg; 851 return 0; 852 } 853 return -1; 854#endif 855 case LDAP_OPT_X_TLS_CIPHER_SUITE: 856 if ( lo->ldo_tls_ciphersuite ) LDAP_FREE( lo->ldo_tls_ciphersuite ); 857 lo->ldo_tls_ciphersuite = arg ? LDAP_STRDUP( (char *) arg ) : NULL; 858 return 0; 859 860 case LDAP_OPT_X_TLS_PROTOCOL_MIN: 861 if ( !arg ) return -1; 862 lo->ldo_tls_protocol_min = *(int *)arg; 863 return 0; 864#ifndef HAVE_SECURE_TRANSPORT 865 case LDAP_OPT_X_TLS_RANDOM_FILE: 866 if ( ld != NULL ) 867 return -1; 868 if ( lo->ldo_tls_randfile ) LDAP_FREE (lo->ldo_tls_randfile ); 869 lo->ldo_tls_randfile = arg ? LDAP_STRDUP( (char *) arg ) : NULL; 870 break; 871#ifdef __APPLE__ 872 case LDAP_OPT_X_TLS_CERT_IDENTITY: 873 if( lo->ldo_tls_server_ident_ref_name) LDAP_FREE(lo->ldo_tls_server_ident_ref_name); 874 lo->ldo_tls_server_ident_ref_name = arg ? LDAP_STRDUP( (char*) arg) : NULL; 875 return 0; 876 877 case LDAP_OPT_X_TLS_PASSPHRASE: 878 if( lo->ldo_tls_passphrase) LDAP_FREE(lo->ldo_tls_passphrase); 879 lo->ldo_tls_passphrase = arg ? LDAP_STRDUP( (char*) arg) : NULL; 880 return 0; 881#endif 882#endif 883 case LDAP_OPT_X_TLS_NEWCTX: 884 if ( !arg ) return -1; 885 if ( lo->ldo_tls_ctx ) 886 ldap_pvt_tls_ctx_free( lo->ldo_tls_ctx ); 887 lo->ldo_tls_ctx = NULL; 888 return ldap_int_tls_init_ctx( lo, *(int *)arg ); 889 default: 890 return -1; 891 } 892 return 0; 893} 894 895int 896ldap_int_tls_start ( LDAP *ld, LDAPConn *conn, LDAPURLDesc *srv ) 897{ 898 Sockbuf *sb; 899 char *host; 900 void *ssl; 901 902 if ( !conn ) 903 return LDAP_PARAM_ERROR; 904 905 sb = conn->lconn_sb; 906 if( srv ) { 907 host = srv->lud_host; 908 } else { 909 host = conn->lconn_server->lud_host; 910 } 911 912 /* avoid NULL host */ 913 if( host == NULL ) { 914 host = "localhost"; 915 } 916 917 (void) tls_init( tls_imp ); 918 919#if defined(__APPLE__) && !defined(HAVE_SECURE_TRANSPORT) 920 /* Get the host's certificate from the keychain if possible, and stash 921 * it in the options for use once the SSL context is created. 922 */ 923 tls_get_cert_from_keychain( host ); 924#endif 925 926 /* 927 * Fortunately, the lib uses blocking io... 928 */ 929 if ( ldap_int_tls_connect( ld, conn ) < 0 ) { 930 ld->ld_errno = LDAP_CONNECT_ERROR; 931 return (ld->ld_errno); 932 } 933 934 ssl = ldap_pvt_tls_sb_ctx( sb ); 935 assert( ssl != NULL ); 936 937 /* 938 * compare host with name(s) in certificate 939 */ 940 if (ld->ld_options.ldo_tls_require_cert != LDAP_OPT_X_TLS_NEVER && 941 ld->ld_options.ldo_tls_require_cert != LDAP_OPT_X_TLS_ALLOW) { 942 ld->ld_errno = ldap_pvt_tls_check_hostname( ld, ssl, host ); 943 if (ld->ld_errno != LDAP_SUCCESS) { 944#ifdef __APPLE__ 945 /* If the hostname is really an IP address, do the reverse 946 * lookup and see if that matches the cert. 947 */ 948 char *hostname = ldap_host_connected_to( sb, host ); 949 if (hostname) { 950 Debug( LDAP_DEBUG_ANY, 951 "TLS reverse lookup of '%s' is '%s', checking if that matches the certificate common name\n", 952 host, hostname, 0); 953 954 ld->ld_errno = ldap_pvt_tls_check_hostname( ld, ssl, hostname ); 955 free(hostname); 956 hostname = NULL; 957 } 958#endif 959 return ld->ld_errno; 960 } 961 } 962 963 return LDAP_SUCCESS; 964} 965 966void * 967ldap_pvt_tls_sb_ctx( Sockbuf *sb ) 968{ 969 void *p = NULL; 970 971 ber_sockbuf_ctrl( sb, LBER_SB_OPT_GET_SSL, (void *)&p ); 972 return p; 973} 974 975int 976ldap_pvt_tls_get_strength( void *s ) 977{ 978 tls_session *session = s; 979 980 return tls_imp->ti_session_strength( session ); 981} 982 983int 984ldap_pvt_tls_get_my_dn( void *s, struct berval *dn, LDAPDN_rewrite_dummy *func, unsigned flags ) 985{ 986 tls_session *session = s; 987 struct berval der_dn; 988 int rc; 989 990 rc = tls_imp->ti_session_my_dn( session, &der_dn ); 991 if ( rc == LDAP_SUCCESS ) 992 rc = ldap_X509dn2bv(&der_dn, dn, (LDAPDN_rewrite_func *)func, flags ); 993 return rc; 994} 995#endif /* HAVE_TLS */ 996 997int 998ldap_start_tls( LDAP *ld, 999 LDAPControl **serverctrls, 1000 LDAPControl **clientctrls, 1001 int *msgidp ) 1002{ 1003 return ldap_extended_operation( ld, LDAP_EXOP_START_TLS, 1004 NULL, serverctrls, clientctrls, msgidp ); 1005} 1006 1007int 1008ldap_install_tls( LDAP *ld ) 1009{ 1010#ifndef HAVE_TLS 1011 return LDAP_NOT_SUPPORTED; 1012#else 1013 if ( ldap_tls_inplace( ld ) ) { 1014 return LDAP_LOCAL_ERROR; 1015 } 1016 1017 return ldap_int_tls_start( ld, ld->ld_defconn, NULL ); 1018#endif 1019} 1020 1021int 1022ldap_start_tls_s ( LDAP *ld, 1023 LDAPControl **serverctrls, 1024 LDAPControl **clientctrls ) 1025{ 1026#ifndef HAVE_TLS 1027 return LDAP_NOT_SUPPORTED; 1028#else 1029 int rc; 1030 char *rspoid = NULL; 1031 struct berval *rspdata = NULL; 1032 1033 /* XXYYZ: this initiates operation only on default connection! */ 1034 1035 if ( ldap_tls_inplace( ld ) ) { 1036 return LDAP_LOCAL_ERROR; 1037 } 1038 1039 rc = ldap_extended_operation_s( ld, LDAP_EXOP_START_TLS, 1040 NULL, serverctrls, clientctrls, &rspoid, &rspdata ); 1041 1042 if ( rspoid != NULL ) { 1043 LDAP_FREE(rspoid); 1044 } 1045 1046 if ( rspdata != NULL ) { 1047 ber_bvfree( rspdata ); 1048 } 1049 1050 if ( rc == LDAP_SUCCESS ) { 1051 rc = ldap_int_tls_start( ld, ld->ld_defconn, NULL ); 1052 } 1053 1054 return rc; 1055#endif 1056} 1057 1058/* These tags probably all belong in lber.h, but they're 1059 * not normally encountered when processing LDAP, so maybe 1060 * they belong somewhere else instead. 1061 */ 1062 1063#define LBER_TAG_OID ((ber_tag_t) 0x06UL) 1064 1065/* Tags for string types used in a DirectoryString. 1066 * 1067 * Note that IA5string is not one of the defined choices for 1068 * DirectoryString in X.520, but it gets used for email AVAs. 1069 */ 1070#define LBER_TAG_UTF8 ((ber_tag_t) 0x0cUL) 1071#define LBER_TAG_PRINTABLE ((ber_tag_t) 0x13UL) 1072#define LBER_TAG_TELETEX ((ber_tag_t) 0x14UL) 1073#define LBER_TAG_IA5 ((ber_tag_t) 0x16UL) 1074#define LBER_TAG_UNIVERSAL ((ber_tag_t) 0x1cUL) 1075#define LBER_TAG_BMP ((ber_tag_t) 0x1eUL) 1076 1077static oid_name * 1078find_oid( struct berval *oid ) 1079{ 1080 int i; 1081 1082 for ( i=0; !BER_BVISNULL( &oids[i].oid ); i++ ) { 1083 if ( oids[i].oid.bv_len != oid->bv_len ) continue; 1084 if ( !strcmp( oids[i].oid.bv_val, oid->bv_val )) 1085 return &oids[i]; 1086 } 1087 return NULL; 1088} 1089 1090/* Converts BER Bitstring value to LDAP BitString value (RFC4517) 1091 * 1092 * berValue : IN 1093 * rfc4517Value: OUT 1094 * 1095 * berValue and ldapValue should not be NULL 1096 */ 1097 1098#define BITS_PER_BYTE 8 1099#define SQUOTE_LENGTH 1 1100#define B_CHAR_LENGTH 1 1101#define STR_OVERHEAD (2*SQUOTE_LENGTH + B_CHAR_LENGTH) 1102 1103static int 1104der_to_ldap_BitString (struct berval *berValue, 1105 struct berval *ldapValue) 1106{ 1107 ber_len_t bitPadding=0; 1108 ber_len_t bits, maxBits; 1109 char *tmpStr; 1110 unsigned char byte; 1111 ber_len_t bitLength; 1112 ber_len_t valLen; 1113 unsigned char* valPtr; 1114 1115 ldapValue->bv_len=0; 1116 ldapValue->bv_val=NULL; 1117 1118 /* Gets padding and points to binary data */ 1119 valLen=berValue->bv_len; 1120 valPtr=(unsigned char*)berValue->bv_val; 1121 if (valLen) { 1122 bitPadding=(ber_len_t)(valPtr[0]); 1123 valLen--; 1124 valPtr++; 1125 } 1126 /* If Block is non DER encoding fixes to DER encoding */ 1127 if (bitPadding >= BITS_PER_BYTE) { 1128 if (valLen*BITS_PER_BYTE > bitPadding ) { 1129 valLen-=(bitPadding/BITS_PER_BYTE); 1130 bitPadding%=BITS_PER_BYTE; 1131 } else { 1132 valLen=0; 1133 bitPadding=0; 1134 } 1135 } 1136 /* Just in case bad encoding */ 1137 if (valLen*BITS_PER_BYTE < bitPadding ) { 1138 bitPadding=0; 1139 valLen=0; 1140 } 1141 1142 /* Gets buffer to hold RFC4517 Bit String format */ 1143 bitLength=valLen*BITS_PER_BYTE-bitPadding; 1144 tmpStr=LDAP_MALLOC(bitLength + STR_OVERHEAD + 1); 1145 1146 if (!tmpStr) 1147 return LDAP_NO_MEMORY; 1148 1149 ldapValue->bv_val=tmpStr; 1150 ldapValue->bv_len=bitLength + STR_OVERHEAD; 1151 1152 /* Formatting in '*binary-digit'B format */ 1153 maxBits=BITS_PER_BYTE; 1154 *tmpStr++ ='\''; 1155 while(valLen) { 1156 byte=*valPtr; 1157 if (valLen==1) 1158 maxBits-=bitPadding; 1159 for (bits=0; bits<maxBits; bits++) { 1160 if (0x80 & byte) 1161 *tmpStr='1'; 1162 else 1163 *tmpStr='0'; 1164 tmpStr++; 1165 byte<<=1; 1166 } 1167 valPtr++; 1168 valLen--; 1169 } 1170 *tmpStr++ ='\''; 1171 *tmpStr++ ='B'; 1172 *tmpStr=0; 1173 1174 return LDAP_SUCCESS; 1175} 1176 1177/* Convert a structured DN from an X.509 certificate into an LDAPV3 DN. 1178 * x509_name must be raw DER. If func is non-NULL, the 1179 * constructed DN will use numeric OIDs to identify attributeTypes, 1180 * and the func() will be invoked to rewrite the DN with the given 1181 * flags. 1182 * 1183 * Otherwise the DN will use shortNames from a hardcoded table. 1184 */ 1185int 1186ldap_X509dn2bv( void *x509_name, struct berval *bv, LDAPDN_rewrite_func *func, 1187 unsigned flags ) 1188{ 1189 LDAPDN newDN; 1190 LDAPRDN newRDN; 1191 LDAPAVA *newAVA, *baseAVA; 1192 BerElementBuffer berbuf; 1193 BerElement *ber = (BerElement *)&berbuf; 1194 char oids[8192], *oidptr = oids, *oidbuf = NULL; 1195 void *ptrs[2048]; 1196 char *dn_end, *rdn_end; 1197 int i, navas, nrdns, rc = LDAP_SUCCESS; 1198 size_t dnsize, oidrem = sizeof(oids), oidsize = 0; 1199 int csize; 1200 ber_tag_t tag; 1201 ber_len_t len; 1202 oid_name *oidname; 1203 1204 struct berval Oid, Val, oid2, *in = x509_name; 1205 1206 assert( bv != NULL ); 1207 1208 bv->bv_len = 0; 1209 bv->bv_val = NULL; 1210 1211 navas = 0; 1212 nrdns = 0; 1213 1214 /* A DN is a SEQUENCE of RDNs. An RDN is a SET of AVAs. 1215 * An AVA is a SEQUENCE of attr and value. 1216 * Count the number of AVAs and RDNs 1217 */ 1218 ber_init2( ber, in, LBER_USE_DER ); 1219 tag = ber_peek_tag( ber, &len ); 1220 if ( tag != LBER_SEQUENCE ) 1221 return LDAP_DECODING_ERROR; 1222 1223 for ( tag = ber_first_element( ber, &len, &dn_end ); 1224 tag == LBER_SET; 1225 tag = ber_next_element( ber, &len, dn_end )) { 1226 nrdns++; 1227 for ( tag = ber_first_element( ber, &len, &rdn_end ); 1228 tag == LBER_SEQUENCE; 1229 tag = ber_next_element( ber, &len, rdn_end )) { 1230 tag = ber_skip_tag( ber, &len ); 1231 ber_skip_data( ber, len ); 1232 navas++; 1233 } 1234 } 1235 1236 /* Allocate the DN/RDN/AVA stuff as a single block */ 1237 dnsize = sizeof(LDAPRDN) * (nrdns+1); 1238 dnsize += sizeof(LDAPAVA *) * (navas+nrdns); 1239 dnsize += sizeof(LDAPAVA) * navas; 1240 if (dnsize > sizeof(ptrs)) { 1241 newDN = (LDAPDN)LDAP_MALLOC( dnsize ); 1242 if ( newDN == NULL ) 1243 return LDAP_NO_MEMORY; 1244 } else { 1245 newDN = (LDAPDN)(char *)ptrs; 1246 } 1247 1248 newDN[nrdns] = NULL; 1249 newRDN = (LDAPRDN)(newDN + nrdns+1); 1250 newAVA = (LDAPAVA *)(newRDN + navas + nrdns); 1251 baseAVA = newAVA; 1252 1253 /* Rewind and start extracting */ 1254 ber_rewind( ber ); 1255 1256 tag = ber_first_element( ber, &len, &dn_end ); 1257 for ( i = nrdns - 1; i >= 0; i-- ) { 1258 newDN[i] = newRDN; 1259 1260 for ( tag = ber_first_element( ber, &len, &rdn_end ); 1261 tag == LBER_SEQUENCE; 1262 tag = ber_next_element( ber, &len, rdn_end )) { 1263 1264 *newRDN++ = newAVA; 1265 tag = ber_skip_tag( ber, &len ); 1266 tag = ber_get_stringbv( ber, &Oid, LBER_BV_NOTERM ); 1267 if ( tag != LBER_TAG_OID ) { 1268 rc = LDAP_DECODING_ERROR; 1269 goto nomem; 1270 } 1271 1272 oid2.bv_val = oidptr; 1273 oid2.bv_len = oidrem; 1274 if ( ber_decode_oid( &Oid, &oid2 ) < 0 ) { 1275 rc = LDAP_DECODING_ERROR; 1276 goto nomem; 1277 } 1278 oidname = find_oid( &oid2 ); 1279 if ( !oidname ) { 1280 newAVA->la_attr = oid2; 1281 oidptr += oid2.bv_len + 1; 1282 oidrem -= oid2.bv_len + 1; 1283 1284 /* Running out of OID buffer space? */ 1285 if (oidrem < 128) { 1286 if ( oidsize == 0 ) { 1287 oidsize = sizeof(oids) * 2; 1288 oidrem = oidsize; 1289 oidbuf = LDAP_MALLOC( oidsize ); 1290 if ( oidbuf == NULL ) goto nomem; 1291 oidptr = oidbuf; 1292 } else { 1293 char *old = oidbuf; 1294 oidbuf = LDAP_REALLOC( oidbuf, oidsize*2 ); 1295 if ( oidbuf == NULL ) goto nomem; 1296 /* Buffer moved! Fix AVA pointers */ 1297 if ( old != oidbuf ) { 1298 LDAPAVA *a; 1299 long dif = oidbuf - old; 1300 1301 for (a=baseAVA; a<=newAVA; a++){ 1302 if (a->la_attr.bv_val >= old && 1303 a->la_attr.bv_val <= (old + oidsize)) 1304 a->la_attr.bv_val += dif; 1305 } 1306 } 1307 oidptr = oidbuf + oidsize - oidrem; 1308 oidrem += oidsize; 1309 oidsize *= 2; 1310 } 1311 } 1312 } else { 1313 if ( func ) { 1314 newAVA->la_attr = oidname->oid; 1315 } else { 1316 newAVA->la_attr = oidname->name; 1317 } 1318 } 1319 newAVA->la_private = NULL; 1320 newAVA->la_flags = LDAP_AVA_STRING; 1321 tag = ber_get_stringbv( ber, &Val, LBER_BV_NOTERM ); 1322 switch(tag) { 1323 case LBER_TAG_UNIVERSAL: 1324 /* This uses 32-bit ISO 10646-1 */ 1325 csize = 4; goto to_utf8; 1326 case LBER_TAG_BMP: 1327 /* This uses 16-bit ISO 10646-1 */ 1328 csize = 2; goto to_utf8; 1329 case LBER_TAG_TELETEX: 1330 /* This uses 8-bit, assume ISO 8859-1 */ 1331 csize = 1; 1332to_utf8: rc = ldap_ucs_to_utf8s( &Val, csize, &newAVA->la_value ); 1333 newAVA->la_flags |= LDAP_AVA_NONPRINTABLE; 1334allocd: 1335 newAVA->la_flags |= LDAP_AVA_FREE_VALUE; 1336 if (rc != LDAP_SUCCESS) goto nomem; 1337 break; 1338 case LBER_TAG_UTF8: 1339 newAVA->la_flags |= LDAP_AVA_NONPRINTABLE; 1340 /* This is already in UTF-8 encoding */ 1341 case LBER_TAG_IA5: 1342 case LBER_TAG_PRINTABLE: 1343 /* These are always 7-bit strings */ 1344 newAVA->la_value = Val; 1345 break; 1346 case LBER_BITSTRING: 1347 /* X.690 bitString value converted to RFC4517 Bit String */ 1348 rc = der_to_ldap_BitString( &Val, &newAVA->la_value ); 1349 goto allocd; 1350 default: 1351 /* Not a string type at all */ 1352 newAVA->la_flags = 0; 1353 newAVA->la_value = Val; 1354 break; 1355 } 1356 newAVA++; 1357 } 1358 *newRDN++ = NULL; 1359 tag = ber_next_element( ber, &len, dn_end ); 1360 } 1361 1362 if ( func ) { 1363 rc = func( newDN, flags, NULL ); 1364 if ( rc != LDAP_SUCCESS ) 1365 goto nomem; 1366 } 1367 1368 rc = ldap_dn2bv_x( newDN, bv, LDAP_DN_FORMAT_LDAPV3, NULL ); 1369 1370nomem: 1371 for (;baseAVA < newAVA; baseAVA++) { 1372 if (baseAVA->la_flags & LDAP_AVA_FREE_ATTR) 1373 LDAP_FREE( baseAVA->la_attr.bv_val ); 1374 if (baseAVA->la_flags & LDAP_AVA_FREE_VALUE) 1375 LDAP_FREE( baseAVA->la_value.bv_val ); 1376 } 1377 1378 if ( oidsize != 0 ) 1379 LDAP_FREE( oidbuf ); 1380 if ( newDN != (LDAPDN)(char *) ptrs ) 1381 LDAP_FREE( newDN ); 1382 return rc; 1383} 1384 1385#ifdef HAVE_TLS 1386#if defined(__APPLE__) && !defined(HAVE_SECURE_TRANSPORT) 1387 1388#define SYSTEM_KEYCHAIN_PATH "/Library/Keychains/System.keychain" 1389static void 1390tls_get_cert_from_keychain( char *host ) 1391{ 1392 /* Cert info is kept in the global options. */ 1393 struct ldapoptions *lo = LDAP_INT_GLOBAL_OPT(); 1394 if ( !lo ) return; 1395 1396 /* If the server identity option is set, don't need to do anything 1397 * as the certificate will get set in the SSL context during context 1398 * initialization. 1399 */ 1400 if (lo->ldo_tls_server_ident_ref_name) { 1401 return; 1402 } 1403 1404 /* If the cert is set in the options, don't override it. */ 1405 if ( lo->ldo_tls_cacertfile || lo->ldo_tls_certfile ) { 1406 Debug( LDAP_DEBUG_ANY, 1407 "TLS: not reading certificate from keychain, option %s is set\n", 1408 lo->ldo_tls_cacertfile ? "cacertfile" : "certfile", 0, 0 ); 1409 1410 return; 1411 } 1412 1413 SecKeychainRef keychainRef = NULL; 1414 OSStatus status = SecKeychainOpen( SYSTEM_KEYCHAIN_PATH, &keychainRef ); 1415 if ( status != errSecSuccess ) { 1416 Debug( LDAP_DEBUG_ANY, "TLS: SecKeychainOpen failed for keychain %s: %d", 1417 SYSTEM_KEYCHAIN_PATH, (int)status, 0 ); 1418 syslog( LOG_ERR, "TLS: SecKeychainOpen failed for keychain %s: %d", 1419 SYSTEM_KEYCHAIN_PATH, (int)status, 0 ); 1420 cssmPerror( "SecKeychainOpen", status ); 1421 return; 1422 } 1423 1424 SecKeychainSearchRef searchRef = NULL; 1425 status = SecKeychainSearchCreateFromAttributes( keychainRef, kSecCertificateItemClass, NULL, &searchRef ); 1426 if ( status != errSecSuccess ) { 1427 Debug( LDAP_DEBUG_ANY, "TLS: SecKeychainSearchCreateFromAttributes failed: %d", 1428 (int)status, 0, 0 ); 1429 syslog( LOG_ERR, "TLS: SecKeychainSearchCreateFromAttributes failed: %d", (int)status ); 1430 cssmPerror( "SecKeychainSearchCreateFromAttributes", status ); 1431 } 1432 1433 while ( status == errSecSuccess ) { 1434 1435 SecCertificateRef certificateRef = NULL; 1436 status = SecKeychainSearchCopyNext( searchRef, (SecKeychainItemRef*)&certificateRef ); 1437 1438 /* Bail on any error. */ 1439 if ( status != errSecSuccess ) { 1440 /* Only complain if the error is something other than 1441 * the normal search end. 1442 */ 1443 if ( status != errSecItemNotFound ) { 1444 Debug( LDAP_DEBUG_ANY, "TLS: SecKeychainSearchCopyNext failed: %d", 1445 (int)status, 0, 0 ); 1446 syslog( LOG_ERR, "SecKeychainSearchCopyNext failed: %d", (int)status ); 1447 cssmPerror( "SecKeychainSearchCopyNext", status ); 1448 } 1449 break; 1450 } 1451 1452 /* Extract the name from the certificate. Will check against the host 1453 * name passed in. 1454 */ 1455 CFStringRef commonName = NULL; 1456 status = SecCertificateCopyCommonName( certificateRef, &commonName ); 1457 if ( status != errSecSuccess || !commonName ) { 1458 Debug( LDAP_DEBUG_ANY, "TLS: SecCertificateCopyCommonName failed: %d", 1459 (int)status, 0, 0 ); 1460 cssmPerror( "SecCertificateCopyCommonName", status ); 1461 1462 /* Reset 'status' to allow the loop to continue. No need to 1463 * stop just because we can't get the name from one of the 1464 * certs. 1465 */ 1466 status = errSecSuccess; 1467 } 1468 else { 1469 /* If the common name in the certificate matches the host name, save 1470 * the certificate reference in the options data for later use. 1471 */ 1472 char commonNameCStr[PATH_MAX]; 1473 if ( !CFStringGetCString( commonName, 1474 commonNameCStr, 1475 sizeof(commonNameCStr), 1476 kCFStringEncodingUTF8 ) ) 1477 { 1478 Debug( LDAP_DEBUG_ANY, 1479 "TLS: Unable to convert certificate common name CFString into C String", 1480 0, 0, 0); 1481 } 1482 CFRelease( commonName ); 1483 1484 if ( commonNameCStr && strcmp( commonNameCStr, host ) == 0 ) { 1485 if ( lo->ldo_tls_cert_ref ) { 1486 CFRelease( lo->ldo_tls_cert_ref ); 1487 } 1488 1489 lo->ldo_tls_cert_ref = certificateRef; 1490 status = !errSecSuccess; /* cert found - terminate the loop */ 1491 } 1492 } 1493 1494 /* Only release the ref if we don't care about it. Refs we care 1495 * about get released later (when the connection is closed). 1496 */ 1497 if ( lo->ldo_tls_cert_ref != certificateRef ) { 1498 CFRelease( certificateRef ); 1499 } 1500 } 1501 1502 if ( searchRef ) { 1503 CFRelease( searchRef ); 1504 } 1505 1506 CFRelease( keychainRef ); 1507 1508 Debug( LDAP_DEBUG_ANY, 1509 "TLS: %s certificate in keychain for host \"%s\"\n", 1510 lo->ldo_tls_cert_ref ? "found" : "did not find", host, 0 ); 1511} 1512 1513#endif /* __APPLE__ */ 1514#endif /* HAVE_TLS */ 1515 1516