1 /*
2 * Copyright 2004 Sun Microsystems, Inc. All rights reserved.
3 * Use is subject to license terms.
4 */
5
6
7 /*
8 * The contents of this file are subject to the Netscape Public
9 * License Version 1.1 (the "License"); you may not use this file
10 * except in compliance with the License. You may obtain a copy of
11 * the License at http://www.mozilla.org/NPL/
12 *
13 * Software distributed under the License is distributed on an "AS
14 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
15 * implied. See the License for the specific language governing
16 * rights and limitations under the License.
17 *
18 * The Original Code is Mozilla Communicator client code, released
19 * March 31, 1998.
20 *
21 * The Initial Developer of the Original Code is Netscape
22 * Communications Corporation. Portions created by Netscape are
23 * Copyright (C) 1998-1999 Netscape Communications Corporation. All
24 * Rights Reserved.
25 *
26 * Contributor(s):
27 */
28 /*
29 * Copyright (c) 1995 Regents of the University of Michigan.
30 * All rights reserved.
31 */
32 /*
33 * open.c
34 */
35
36 #if 0
37 #ifndef lint
38 static char copyright[] = "@(#) Copyright (c) 1995 Regents of the University of Michigan.\nAll rights reserved.\n";
39 #endif
40 #endif
41
42 #include "ldap-int.h"
43 #ifdef LDAP_SASLIO_HOOKS
44 /* Valid for any ANSI C compiler */
45 #include <limits.h>
46 #endif
47
48 #define VI_PRODUCTVERSION 3
49
50 #ifndef INADDR_LOOPBACK
51 #define INADDR_LOOPBACK ((unsigned long) 0x7f000001)
52 #endif
53
54 #ifndef MAXHOSTNAMELEN
55 #define MAXHOSTNAMELEN 64
56 #endif
57
58 #ifdef LDAP_DEBUG
59 int ldap_debug;
60 #endif
61
62
63 /*
64 * global defaults for callbacks are stored here. callers of the API set
65 * these by passing a NULL "ld" to ldap_set_option(). Everything in
66 * nsldapi_ld_defaults can be overridden on a per-ld basis as well (the
67 * memory allocation functions are global to all ld's).
68 */
69 struct ldap nsldapi_ld_defaults;
70 struct ldap_memalloc_fns nsldapi_memalloc_fns = { 0, 0, 0, 0 };
71 int nsldapi_initialized = 0;
72
73 #ifndef _WINDOWS
74 #include <pthread.h>
75 static pthread_key_t nsldapi_key;
76
77 struct nsldapi_ldap_error {
78 int le_errno;
79 char *le_matched;
80 char *le_errmsg;
81 };
82 #else
83 __declspec ( thread ) int nsldapi_gldaperrno;
84 __declspec ( thread ) char *nsldapi_gmatched = NULL;
85 __declspec ( thread ) char *nsldapi_gldaperror = NULL;
86 #endif /* _WINDOWS */
87
88 #ifdef _WINDOWS
89 #define LDAP_MUTEX_T HANDLE
90
91 int
pthread_mutex_init(LDAP_MUTEX_T * mp,void * attr)92 pthread_mutex_init( LDAP_MUTEX_T *mp, void *attr)
93 {
94 if ( (*mp = CreateMutex(NULL, FALSE, NULL)) == NULL )
95 return( 1 );
96 else
97 return( 0 );
98 }
99
100 static void *
pthread_mutex_alloc(void)101 pthread_mutex_alloc( void )
102 {
103 LDAP_MUTEX_T *mutexp;
104
105 if ( (mutexp = malloc( sizeof(LDAP_MUTEX_T) )) != NULL ) {
106 pthread_mutex_init( mutexp, NULL );
107 }
108 return( mutexp );
109 }
110
111 int
pthread_mutex_destroy(LDAP_MUTEX_T * mp)112 pthread_mutex_destroy( LDAP_MUTEX_T *mp )
113 {
114 if ( !(CloseHandle(*mp)) )
115 return( 1 );
116 else
117 return( 0 );
118 }
119
120 static void
pthread_mutex_free(void * mutexp)121 pthread_mutex_free( void *mutexp )
122 {
123 pthread_mutex_destroy( (LDAP_MUTEX_T *) mutexp );
124 free( mutexp );
125 }
126
127 int
pthread_mutex_lock(LDAP_MUTEX_T * mp)128 pthread_mutex_lock( LDAP_MUTEX_T *mp )
129 {
130 if ( (WaitForSingleObject(*mp, INFINITE) != WAIT_OBJECT_0) )
131 return( 1 );
132 else
133 return( 0 );
134 }
135
136 int
pthread_mutex_unlock(LDAP_MUTEX_T * mp)137 pthread_mutex_unlock( LDAP_MUTEX_T *mp )
138 {
139 if ( !(ReleaseMutex(*mp)) )
140 return( 1 );
141 else
142 return( 0 );
143 }
144
145 static int
get_errno(void)146 get_errno( void )
147 {
148 return errno;
149 }
150
151 static void
set_errno(int Errno)152 set_errno( int Errno )
153 {
154 errno = Errno;
155 }
156
157 static int
get_ld_error(char ** LDMatched,char ** LDError,void * Args)158 get_ld_error( char **LDMatched, char **LDError, void * Args )
159 {
160 if ( LDMatched != NULL )
161 {
162 *LDMatched = nsldapi_gmatched;
163 }
164 if ( LDError != NULL )
165 {
166 *LDError = nsldapi_gldaperror;
167 }
168 return nsldapi_gldaperrno;
169 }
170
171 static void
set_ld_error(int LDErrno,char * LDMatched,char * LDError,void * Args)172 set_ld_error( int LDErrno, char * LDMatched, char * LDError,
173 void * Args )
174 {
175 /* Clean up any previous string storage. */
176 if ( nsldapi_gmatched != NULL )
177 {
178 ldap_memfree( nsldapi_gmatched );
179 }
180 if ( nsldapi_gldaperror != NULL )
181 {
182 ldap_memfree( nsldapi_gldaperror );
183 }
184
185 nsldapi_gldaperrno = LDErrno;
186 nsldapi_gmatched = LDMatched;
187 nsldapi_gldaperror = LDError;
188 }
189 #else
190 static void *
pthread_mutex_alloc(void)191 pthread_mutex_alloc( void )
192 {
193 pthread_mutex_t *mutexp;
194
195 if ( (mutexp = malloc( sizeof(pthread_mutex_t) )) != NULL ) {
196 pthread_mutex_init( mutexp, NULL );
197 }
198 return( mutexp );
199 }
200
201 static void
pthread_mutex_free(void * mutexp)202 pthread_mutex_free( void *mutexp )
203 {
204 pthread_mutex_destroy( (pthread_mutex_t *) mutexp );
205 free( mutexp );
206 }
207
208 static void
set_ld_error(int err,char * matched,char * errmsg,void * dummy)209 set_ld_error( int err, char *matched, char *errmsg, void *dummy )
210 {
211 struct nsldapi_ldap_error *le;
212 void *tsd;
213
214 le = pthread_getspecific( nsldapi_key );
215
216 if (le == NULL) {
217 tsd = (void *)calloc(1, sizeof(struct nsldapi_ldap_error));
218 pthread_setspecific( nsldapi_key, tsd );
219 }
220
221 le = pthread_getspecific( nsldapi_key );
222
223 if (le == NULL) {
224 free(tsd);
225 return;
226 }
227
228 le->le_errno = err;
229
230 if ( le->le_matched != NULL ) {
231 ldap_memfree( le->le_matched );
232 }
233 le->le_matched = matched;
234
235 if ( le->le_errmsg != NULL ) {
236 ldap_memfree( le->le_errmsg );
237 }
238 le->le_errmsg = errmsg;
239 }
240
241 static int
get_ld_error(char ** matched,char ** errmsg,void * dummy)242 get_ld_error( char **matched, char **errmsg, void *dummy )
243 {
244 struct nsldapi_ldap_error *le;
245
246 le = pthread_getspecific( nsldapi_key );
247 if (le != NULL) {
248 if ( matched != NULL ) {
249 *matched = le->le_matched;
250 }
251 if ( errmsg != NULL ) {
252 *errmsg = le->le_errmsg;
253 }
254 return( le->le_errno );
255 } else {
256 if ( matched != NULL )
257 *matched = NULL;
258 if ( errmsg != NULL )
259 *errmsg = NULL;
260 }
261 return (LDAP_SUCCESS);
262 }
263
264 static void
set_errno(int err)265 set_errno( int err )
266 {
267 errno = err;
268 }
269
270 static int
get_errno(void)271 get_errno( void )
272 {
273 return( errno );
274 }
275 #endif /* _WINDOWS */
276
277 static struct ldap_thread_fns
278 nsldapi_default_thread_fns = {
279 (void *(*)(void))pthread_mutex_alloc,
280 (void (*)(void *))pthread_mutex_free,
281 (int (*)(void *))pthread_mutex_lock,
282 (int (*)(void *))pthread_mutex_unlock,
283 (int (*)(void))get_errno,
284 (void (*)(int))set_errno,
285 (int (*)(char **, char **, void *))get_ld_error,
286 (void (*)(int, char *, char *, void *))set_ld_error,
287 0 };
288
289 static struct ldap_extra_thread_fns
290 nsldapi_default_extra_thread_fns = {
291 0, 0, 0, 0, 0,
292 #ifdef _WINDOWS
293 0
294 #else
295 (void *(*)(void))pthread_self
296 #endif /* _WINDOWS */
297 };
298
299 void
nsldapi_initialize_defaults(void)300 nsldapi_initialize_defaults( void )
301 {
302
303 if ( nsldapi_initialized ) {
304 return;
305 }
306 #ifdef _SOLARIS_SDK
307 /*
308 * This has to be called before nsldapi_initialized is set to 1
309 * because nsldapi_initialized does not have mutex protection
310 */
311 prldap_nspr_init();
312 #endif
313
314 #ifndef _WINDOWS
315 if ( pthread_key_create(&nsldapi_key, free ) != 0) {
316 perror("pthread_key_create");
317 }
318 #endif /* _WINDOWS */
319
320 nsldapi_initialized = 1;
321 memset( &nsldapi_memalloc_fns, 0, sizeof( nsldapi_memalloc_fns ));
322 memset( &nsldapi_ld_defaults, 0, sizeof( nsldapi_ld_defaults ));
323 nsldapi_ld_defaults.ld_options = LDAP_BITOPT_REFERRALS;
324 nsldapi_ld_defaults.ld_version = LDAP_VERSION2;
325 nsldapi_ld_defaults.ld_lberoptions = LBER_OPT_USE_DER;
326 nsldapi_ld_defaults.ld_refhoplimit = LDAP_DEFAULT_REFHOPLIMIT;
327
328 #ifdef LDAP_SASLIO_HOOKS
329 /* SASL default option settings */
330 nsldapi_ld_defaults.ld_def_sasl_mech = NULL;
331 nsldapi_ld_defaults.ld_def_sasl_realm = NULL;
332 nsldapi_ld_defaults.ld_def_sasl_authcid = NULL;
333 nsldapi_ld_defaults.ld_def_sasl_authzid = NULL;
334 /* SASL Security properties */
335 nsldapi_ld_defaults.ld_sasl_secprops.max_ssf = UINT_MAX;
336 nsldapi_ld_defaults.ld_sasl_secprops.maxbufsize = SASL_MAX_BUFF_SIZE;
337 nsldapi_ld_defaults.ld_sasl_secprops.security_flags =
338 SASL_SEC_NOPLAINTEXT | SASL_SEC_NOANONYMOUS;
339 #endif
340
341 #if defined( STR_TRANSLATION ) && defined( LDAP_DEFAULT_CHARSET )
342 nsldapi_ld_defaults.ld_lberoptions |= LBER_OPT_TRANSLATE_STRINGS;
343 #if LDAP_CHARSET_8859 == LDAP_DEFAULT_CHARSET
344 ldap_set_string_translators( &nsldapi_ld_defaults, ldap_8859_to_t61,
345 ldap_t61_to_8859 );
346 #endif /* LDAP_CHARSET_8859 == LDAP_DEFAULT_CHARSET */
347 #endif /* STR_TRANSLATION && LDAP_DEFAULT_CHARSET */
348
349 /* set default connect timeout (in milliseconds) */
350 /* this was picked as it is the standard tcp timeout as well */
351 nsldapi_ld_defaults.ld_connect_timeout = LDAP_X_IO_TIMEOUT_NO_TIMEOUT;
352
353 /* load up default platform specific locking routines */
354 if (ldap_set_option( NULL, LDAP_OPT_THREAD_FN_PTRS,
355 (void *)&nsldapi_default_thread_fns) != LDAP_SUCCESS) {
356 return;
357 }
358
359 #ifndef _WINDOWS
360 /* load up default threadid function */
361 if (ldap_set_option( NULL, LDAP_OPT_EXTRA_THREAD_FN_PTRS,
362 (void *)&nsldapi_default_extra_thread_fns) != LDAP_SUCCESS) {
363 return;
364 }
365 #endif /* _WINDOWS */
366 }
367
368
369 /*
370 * ldap_version - report version levels for important properties
371 * This function is deprecated. Use ldap_get_option( ..., LDAP_OPT_API_INFO,
372 * ... ) instead.
373 *
374 * Example:
375 * LDAPVersion ver;
376 * ldap_version( &ver );
377 * if ( (ver.sdk_version < 100) || (ver.SSL_version < 300) )
378 * fprintf( stderr, "LDAP SDK level insufficient\n" );
379 *
380 * or:
381 * if ( ldap_version(NULL) < 100 )
382 * fprintf( stderr, "LDAP SDK level insufficient\n" );
383 *
384 */
385
386 int
387 LDAP_CALL
ldap_version(LDAPVersion * ver)388 ldap_version( LDAPVersion *ver )
389 {
390 if ( NULL != ver )
391 {
392 memset( ver, 0, sizeof(*ver) );
393 ver->sdk_version = (int)(VI_PRODUCTVERSION * 100);
394 ver->protocol_version = LDAP_VERSION_MAX * 100;
395 ver->SSL_version = SSL_VERSION * 100;
396 /*
397 * set security to none by default
398 */
399
400 ver->security_level = LDAP_SECURITY_NONE;
401 #if defined(LINK_SSL)
402 ver->security_level = 128;
403 #endif
404
405 }
406 return (int)(VI_PRODUCTVERSION * 100);
407 }
408
409 /*
410 * ldap_open - initialize and connect to an ldap server. A magic cookie to
411 * be used for future communication is returned on success, NULL on failure.
412 * "host" may be a space-separated list of hosts or IP addresses
413 *
414 * Example:
415 * LDAP *ld;
416 * ld = ldap_open( hostname, port );
417 */
418
419 LDAP *
420 LDAP_CALL
ldap_open(const char * host,int port)421 ldap_open( const char *host, int port )
422 {
423 LDAP *ld;
424
425 LDAPDebug( LDAP_DEBUG_TRACE, "ldap_open\n", 0, 0, 0 );
426
427 if (( ld = ldap_init( host, port )) == NULL ) {
428 return( NULL );
429 }
430
431 LDAP_MUTEX_LOCK( ld, LDAP_CONN_LOCK );
432 if ( nsldapi_open_ldap_defconn( ld ) < 0 ) {
433 LDAP_MUTEX_UNLOCK( ld, LDAP_CONN_LOCK );
434 ldap_ld_free( ld, NULL, NULL, 0 );
435 return( NULL );
436 }
437
438 LDAP_MUTEX_UNLOCK( ld, LDAP_CONN_LOCK );
439 LDAPDebug( LDAP_DEBUG_TRACE, "ldap_open successful, ld_host is %s\n",
440 ( ld->ld_host == NULL ) ? "(null)" : ld->ld_host, 0, 0 );
441
442 return( ld );
443 }
444
445
446 /*
447 * ldap_init - initialize the LDAP library. A magic cookie to be used for
448 * future communication is returned on success, NULL on failure.
449 * "defhost" may be a space-separated list of hosts or IP addresses
450 *
451 * Example:
452 * LDAP *ld;
453 * ld = ldap_init( default_hostname, default_port );
454 */
455 LDAP *
456 LDAP_CALL
ldap_init(const char * defhost,int defport)457 ldap_init( const char *defhost, int defport )
458 {
459 LDAP *ld;
460
461 if ( !nsldapi_initialized ) {
462 nsldapi_initialize_defaults();
463 }
464
465 if ( defport < 0 || defport > LDAP_PORT_MAX ) {
466 LDAPDebug( LDAP_DEBUG_ANY,
467 "ldap_init: port %d is invalid (port numbers must range from 1 to %d)\n",
468 defport, LDAP_PORT_MAX, 0 );
469 #if !defined( macintosh ) && !defined( DOS )
470 errno = EINVAL;
471 #endif
472 return( NULL );
473 }
474
475 LDAPDebug( LDAP_DEBUG_TRACE, "ldap_init\n", 0, 0, 0 );
476
477 if ( (ld = (LDAP*)NSLDAPI_MALLOC( sizeof(struct ldap) )) == NULL ) {
478 return( NULL );
479 }
480
481 /* copy defaults */
482 SAFEMEMCPY( ld, &nsldapi_ld_defaults, sizeof( struct ldap ));
483 if ( nsldapi_ld_defaults.ld_io_fns_ptr != NULL ) {
484 if (( ld->ld_io_fns_ptr = (struct ldap_io_fns *)NSLDAPI_MALLOC(
485 sizeof( struct ldap_io_fns ))) == NULL ) {
486 NSLDAPI_FREE( (char *)ld );
487 return( NULL );
488 }
489 /* struct copy */
490 *(ld->ld_io_fns_ptr) = *(nsldapi_ld_defaults.ld_io_fns_ptr);
491 }
492
493 /* call the new handle I/O callback if one is defined */
494 if ( ld->ld_extnewhandle_fn != NULL ) {
495 /*
496 * We always pass the session extended I/O argument to
497 * the new handle callback.
498 */
499 if ( ld->ld_extnewhandle_fn( ld, ld->ld_ext_session_arg )
500 != LDAP_SUCCESS ) {
501 NSLDAPI_FREE( (char*)ld );
502 return( NULL );
503 }
504 }
505
506 /* allocate session-specific resources */
507 if (( ld->ld_sbp = ber_sockbuf_alloc()) == NULL ||
508 ( defhost != NULL &&
509 ( ld->ld_defhost = nsldapi_strdup( defhost )) == NULL ) ||
510 ((ld->ld_mutex = (void **) NSLDAPI_CALLOC( LDAP_MAX_LOCK, sizeof(void *))) == NULL )) {
511 if ( ld->ld_sbp != NULL ) {
512 ber_sockbuf_free( ld->ld_sbp );
513 }
514 if( ld->ld_mutex != NULL ) {
515 NSLDAPI_FREE( ld->ld_mutex );
516 }
517 NSLDAPI_FREE( (char*)ld );
518 return( NULL );
519 }
520
521 /* install Sockbuf I/O functions if set in LDAP * */
522 if ( ld->ld_extread_fn != NULL || ld->ld_extwrite_fn != NULL ) {
523 struct lber_x_ext_io_fns lberiofns;
524
525 memset( &lberiofns, 0, sizeof( lberiofns ));
526
527 lberiofns.lbextiofn_size = LBER_X_EXTIO_FNS_SIZE;
528 lberiofns.lbextiofn_read = ld->ld_extread_fn;
529 lberiofns.lbextiofn_write = ld->ld_extwrite_fn;
530 lberiofns.lbextiofn_writev = ld->ld_extwritev_fn;
531 lberiofns.lbextiofn_socket_arg = NULL;
532 ber_sockbuf_set_option( ld->ld_sbp, LBER_SOCKBUF_OPT_EXT_IO_FNS,
533 (void *)&lberiofns );
534 }
535
536 #ifdef _SOLARIS_SDK
537 /* Install the functions for IPv6 support */
538 /* code sequencing is critical from here to nsldapi_mutex_alloc_all */
539 if ( prldap_install_thread_functions( ld, 1 ) != 0 ||
540 prldap_install_io_functions( ld, 1 ) != 0 ||
541 prldap_install_dns_functions( ld ) != 0 ) {
542 /* go through ld and free resources */
543 ldap_unbind( ld );
544 ld = NULL;
545 return( NULL );
546 }
547 #else
548
549 /* allocate mutexes */
550 nsldapi_mutex_alloc_all( ld );
551 #endif
552
553 /* set default port */
554 ld->ld_defport = ( defport == 0 ) ? LDAP_PORT : defport;
555
556 return( ld );
557 }
558
559 void
nsldapi_mutex_alloc_all(LDAP * ld)560 nsldapi_mutex_alloc_all( LDAP *ld )
561 {
562 int i;
563
564 if ( ld != &nsldapi_ld_defaults && ld->ld_mutex != NULL ) {
565 for ( i = 0; i<LDAP_MAX_LOCK; i++ ) {
566 ld->ld_mutex[i] = LDAP_MUTEX_ALLOC( ld );
567 ld->ld_mutex_threadid[i] = (void *) -1;
568 ld->ld_mutex_refcnt[i] = 0;
569 }
570 }
571 }
572
573
574 void
nsldapi_mutex_free_all(LDAP * ld)575 nsldapi_mutex_free_all( LDAP *ld )
576 {
577 int i;
578
579 if ( ld != &nsldapi_ld_defaults && ld->ld_mutex != NULL ) {
580 for ( i = 0; i<LDAP_MAX_LOCK; i++ ) {
581 LDAP_MUTEX_FREE( ld, ld->ld_mutex[i] );
582 }
583 }
584 }
585
586 /* returns 0 if connection opened and -1 if an error occurs */
587 int
nsldapi_open_ldap_defconn(LDAP * ld)588 nsldapi_open_ldap_defconn( LDAP *ld )
589 {
590 LDAPServer *srv;
591
592 if (( srv = (LDAPServer *)NSLDAPI_CALLOC( 1, sizeof( LDAPServer ))) ==
593 NULL || ( ld->ld_defhost != NULL && ( srv->lsrv_host =
594 nsldapi_strdup( ld->ld_defhost )) == NULL )) {
595 LDAP_SET_LDERRNO( ld, LDAP_NO_MEMORY, NULL, NULL );
596 return( -1 );
597 }
598 srv->lsrv_port = ld->ld_defport;
599
600 #ifdef LDAP_SSLIO_HOOKS
601 if (( ld->ld_options & LDAP_BITOPT_SSL ) != 0 ) {
602 srv->lsrv_options |= LDAP_SRV_OPT_SECURE;
603 }
604 #endif
605
606 if (( ld->ld_defconn = nsldapi_new_connection( ld, &srv, 1, 1, 0 ))
607 == NULL ) {
608 if ( ld->ld_defhost != NULL ) {
609 NSLDAPI_FREE( srv->lsrv_host );
610 }
611 NSLDAPI_FREE( (char *)srv );
612 return( -1 );
613 }
614 ++ld->ld_defconn->lconn_refcnt; /* so it never gets closed/freed */
615
616 return( 0 );
617 }
618
619
620 struct ldap_x_hostlist_status {
621 char *lhs_hostlist;
622 char *lhs_nexthost;
623 int lhs_defport;
624 };
625
626 /*
627 * Return the first host and port in hostlist (setting *hostp and *portp).
628 * Return value is an LDAP API error code (LDAP_SUCCESS if all goes well).
629 * Note that a NULL or zero-length hostlist causes the host "127.0.0.1" to
630 * be returned.
631 */
632 int LDAP_CALL
ldap_x_hostlist_first(const char * hostlist,int defport,char ** hostp,int * portp,struct ldap_x_hostlist_status ** statusp)633 ldap_x_hostlist_first( const char *hostlist, int defport, char **hostp,
634 int *portp, struct ldap_x_hostlist_status **statusp )
635 {
636
637 if ( NULL == hostp || NULL == portp || NULL == statusp ) {
638 return( LDAP_PARAM_ERROR );
639 }
640
641 if ( NULL == hostlist || *hostlist == '\0' ) {
642 *hostp = nsldapi_strdup( "127.0.0.1" );
643 if ( NULL == *hostp ) {
644 return( LDAP_NO_MEMORY );
645 }
646 *portp = defport;
647 *statusp = NULL;
648 return( LDAP_SUCCESS );
649 }
650
651 *statusp = NSLDAPI_CALLOC( 1, sizeof( struct ldap_x_hostlist_status ));
652 if ( NULL == *statusp ) {
653 return( LDAP_NO_MEMORY );
654 }
655 (*statusp)->lhs_hostlist = nsldapi_strdup( hostlist );
656 if ( NULL == (*statusp)->lhs_hostlist ) {
657 return( LDAP_NO_MEMORY );
658 }
659 (*statusp)->lhs_nexthost = (*statusp)->lhs_hostlist;
660 (*statusp)->lhs_defport = defport;
661 return( ldap_x_hostlist_next( hostp, portp, *statusp ));
662 }
663
664 /*
665 * Return the next host and port in hostlist (setting *hostp and *portp).
666 * Return value is an LDAP API error code (LDAP_SUCCESS if all goes well).
667 * If no more hosts are available, LDAP_SUCCESS is returned but *hostp is set
668 * to NULL.
669 */
670 int LDAP_CALL
ldap_x_hostlist_next(char ** hostp,int * portp,struct ldap_x_hostlist_status * status)671 ldap_x_hostlist_next( char **hostp, int *portp,
672 struct ldap_x_hostlist_status *status )
673 {
674 char *q;
675 int squarebrackets = 0;
676
677 if ( NULL == hostp || NULL == portp ) {
678 return( LDAP_PARAM_ERROR );
679 }
680
681 if ( NULL == status || NULL == status->lhs_nexthost ) {
682 *hostp = NULL;
683 return( LDAP_SUCCESS );
684 }
685
686 /*
687 * skip past leading '[' if present (IPv6 addresses may be surrounded
688 * with square brackets, e.g., [fe80::a00:20ff:fee5:c0b4]:389
689 */
690 if ( status->lhs_nexthost[0] == '[' ) {
691 ++status->lhs_nexthost;
692 squarebrackets = 1;
693 }
694
695 /* copy host into *hostp */
696 if ( NULL != ( q = strchr( status->lhs_nexthost, ' ' ))) {
697 size_t len = q - status->lhs_nexthost;
698 *hostp = NSLDAPI_MALLOC( len + 1 );
699 if ( NULL == *hostp ) {
700 return( LDAP_NO_MEMORY );
701 }
702 strncpy( *hostp, status->lhs_nexthost, len );
703 (*hostp)[len] = '\0';
704 status->lhs_nexthost += ( len + 1 );
705 } else { /* last host */
706 *hostp = nsldapi_strdup( status->lhs_nexthost );
707 if ( NULL == *hostp ) {
708 return( LDAP_NO_MEMORY );
709 }
710 status->lhs_nexthost = NULL;
711 }
712
713 /*
714 * Look for closing ']' and skip past it before looking for port.
715 */
716 if ( squarebrackets && NULL != ( q = strchr( *hostp, ']' ))) {
717 *q++ = '\0';
718 } else {
719 q = *hostp;
720 }
721
722 /* determine and set port */
723 if ( NULL != ( q = strchr( q, ':' ))) {
724 *q++ = '\0';
725 *portp = atoi( q );
726 } else {
727 *portp = status->lhs_defport;
728 }
729
730 return( LDAP_SUCCESS );
731 }
732
733
734 void LDAP_CALL
ldap_x_hostlist_statusfree(struct ldap_x_hostlist_status * status)735 ldap_x_hostlist_statusfree( struct ldap_x_hostlist_status *status )
736 {
737 if ( NULL != status ) {
738 if ( NULL != status->lhs_hostlist ) {
739 NSLDAPI_FREE( status->lhs_hostlist );
740 }
741 NSLDAPI_FREE( status );
742 }
743 }
744
745
746
747 /*
748 * memory allocation functions. we include these in open.c since every
749 * LDAP application is likely to pull the rest of the code in this file
750 * in anyways.
751 */
752 void *
ldap_x_malloc(size_t size)753 ldap_x_malloc( size_t size )
754 {
755 return( nsldapi_memalloc_fns.ldapmem_malloc == NULL ?
756 malloc( size ) :
757 nsldapi_memalloc_fns.ldapmem_malloc( size ));
758 }
759
760
761 void *
ldap_x_calloc(size_t nelem,size_t elsize)762 ldap_x_calloc( size_t nelem, size_t elsize )
763 {
764 return( nsldapi_memalloc_fns.ldapmem_calloc == NULL ?
765 calloc( nelem, elsize ) :
766 nsldapi_memalloc_fns.ldapmem_calloc( nelem, elsize ));
767 }
768
769
770 void *
ldap_x_realloc(void * ptr,size_t size)771 ldap_x_realloc( void *ptr, size_t size )
772 {
773 return( nsldapi_memalloc_fns.ldapmem_realloc == NULL ?
774 realloc( ptr, size ) :
775 nsldapi_memalloc_fns.ldapmem_realloc( ptr, size ));
776 }
777
778
779 void
ldap_x_free(void * ptr)780 ldap_x_free( void *ptr )
781 {
782 if ( nsldapi_memalloc_fns.ldapmem_free == NULL ) {
783 free( ptr );
784 } else {
785 nsldapi_memalloc_fns.ldapmem_free( ptr );
786 }
787 }
788
789
790 /* if s is NULL, returns NULL */
791 char *
nsldapi_strdup(const char * s)792 nsldapi_strdup( const char *s )
793 {
794 char *p;
795
796 if ( s == NULL ||
797 (p = (char *)NSLDAPI_MALLOC( strlen( s ) + 1 )) == NULL )
798 return( NULL );
799
800 strcpy( p, s );
801
802 return( p );
803 }
804