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ldap.c@ 331

Last change on this file since 331 was 331, checked in by coas-nagasima, 6 years ago
prototoolに関連するプロジェクトをnewlibからmuslを使うよう変更・更新 ntshellをnewlibの下位の実装から、muslのsyscallの実装に変更・更新以下のOSSをアップデート・mruby-1.3.0 ・musl-1.1.18 ・onigmo-6.1.3 ・tcc-0.9.27 以下のOSSを追加・openssl-1.1.0e ・curl-7.57.0 ・zlib-1.2.11 以下のmrbgemsを追加・iij/mruby-digest ・iij/mruby-env ・iij/mruby-errno ・iij/mruby-iijson ・iij/mruby-ipaddr ・iij/mruby-mock ・iij/mruby-require ・iij/mruby-tls-openssl
Property svn:eol-style set to `native` Property svn:mime-type set to `text/x-csrc`
File size: 28.0 KB

Line
1	/***************************************************************************
2	* _ _ ____ _
3	* Project ___\| \| \| \| _ \\| \|
4	* / __\| \| \| \| \|_) \| \|
5	* \| (__\| \|_\| \| _ <\| \|___
6	* \___\|\___/\|_\| \_\_____\|
7	*
8	* Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al.
9	*
10	* This software is licensed as described in the file COPYING, which
11	* you should have received as part of this distribution. The terms
12	* are also available at https://curl.haxx.se/docs/copyright.html.
13	*
14	* You may opt to use, copy, modify, merge, publish, distribute and/or sell
15	* copies of the Software, and permit persons to whom the Software is
16	* furnished to do so, under the terms of the COPYING file.
17	*
18	* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
19	* KIND, either express or implied.
20	*
21	***************************************************************************/
22
23	#include "curl_setup.h"
24
25	#if !defined(CURL_DISABLE_LDAP) && !defined(USE_OPENLDAP)
26
27	/*
28	* Notice that USE_OPENLDAP is only a source code selection switch. When
29	* libcurl is built with USE_OPENLDAP defined the libcurl source code that
30	* gets compiled is the code from openldap.c, otherwise the code that gets
31	* compiled is the code from ldap.c.
32	*
33	* When USE_OPENLDAP is defined a recent version of the OpenLDAP library
34	* might be required for compilation and runtime. In order to use ancient
35	* OpenLDAP library versions, USE_OPENLDAP shall not be defined.
36	*/
37
38	#ifdef USE_WIN32_LDAP /* Use Windows LDAP implementation. */
39	# include <winldap.h>
40	# ifndef LDAP_VENDOR_NAME
41	# error Your Platform SDK is NOT sufficient for LDAP support! \
42	Update your Platform SDK, or disable LDAP support!
43	# else
44	# include <winber.h>
45	# endif
46	#else
47	# define LDAP_DEPRECATED 1 /* Be sure ldap_init() is defined. */
48	# ifdef HAVE_LBER_H
49	# include <lber.h>
50	# endif
51	# include <ldap.h>
52	# if (defined(HAVE_LDAP_SSL) && defined(HAVE_LDAP_SSL_H))
53	# include <ldap_ssl.h>
54	# endif /* HAVE_LDAP_SSL && HAVE_LDAP_SSL_H */
55	#endif
56
57	/* These are macros in both <wincrypt.h> (in above <winldap.h>) and typedefs
58	* in BoringSSL's <openssl/x509.h>
59	*/
60	#ifdef HAVE_BORINGSSL
61	# undef X509_NAME
62	# undef X509_CERT_PAIR
63	# undef X509_EXTENSIONS
64	#endif
65
66	#include "urldata.h"
67	#include <curl/curl.h>
68	#include "sendf.h"
69	#include "escape.h"
70	#include "progress.h"
71	#include "transfer.h"
72	#include "strcase.h"
73	#include "strtok.h"
74	#include "curl_ldap.h"
75	#include "curl_multibyte.h"
76	#include "curl_base64.h"
77	#include "connect.h"
78	/* The last 3 #include files should be in this order */
79	#include "curl_printf.h"
80	#include "curl_memory.h"
81	#include "memdebug.h"
82
83	#ifndef HAVE_LDAP_URL_PARSE
84
85	/* Use our own implementation. */
86
87	typedef struct {
88	char *lud_host;
89	int lud_port;
90	#if defined(USE_WIN32_LDAP)
91	TCHAR *lud_dn;
92	TCHAR **lud_attrs;
93	#else
94	char *lud_dn;
95	char **lud_attrs;
96	#endif
97	int lud_scope;
98	#if defined(USE_WIN32_LDAP)
99	TCHAR *lud_filter;
100	#else
101	char *lud_filter;
102	#endif
103	char **lud_exts;
104	size_t lud_attrs_dups; /* how many were dup'ed, this field is not in the
105	"real" struct so can only be used in code
106	without HAVE_LDAP_URL_PARSE defined */
107	} CURL_LDAPURLDesc;
108
109	#undef LDAPURLDesc
110	#define LDAPURLDesc CURL_LDAPURLDesc
111
112	static int _ldap_url_parse(const struct connectdata *conn,
113	LDAPURLDesc **ludp);
114	static void _ldap_free_urldesc(LDAPURLDesc *ludp);
115
116	#undef ldap_free_urldesc
117	#define ldap_free_urldesc _ldap_free_urldesc
118	#endif
119
120	#ifdef DEBUG_LDAP
121	#define LDAP_TRACE(x) do { \
122	_ldap_trace("%u: ", __LINE__); \
123	_ldap_trace x; \
124	} WHILE_FALSE
125
126	static void _ldap_trace(const char *fmt, ...);
127	#else
128	#define LDAP_TRACE(x) Curl_nop_stmt
129	#endif
130
131
132	static CURLcode Curl_ldap(struct connectdata conn, bool done);
133
134	/*
135	* LDAP protocol handler.
136	*/
137
138	const struct Curl_handler Curl_handler_ldap = {
139	"LDAP", /* scheme */
140	ZERO_NULL, /* setup_connection */
141	Curl_ldap, /* do_it */
142	ZERO_NULL, /* done */
143	ZERO_NULL, /* do_more */
144	ZERO_NULL, /* connect_it */
145	ZERO_NULL, /* connecting */
146	ZERO_NULL, /* doing */
147	ZERO_NULL, /* proto_getsock */
148	ZERO_NULL, /* doing_getsock */
149	ZERO_NULL, /* domore_getsock */
150	ZERO_NULL, /* perform_getsock */
151	ZERO_NULL, /* disconnect */
152	ZERO_NULL, /* readwrite */
153	ZERO_NULL, /* connection_check */
154	PORT_LDAP, /* defport */
155	CURLPROTO_LDAP, /* protocol */
156	PROTOPT_NONE /* flags */
157	};
158
159	#ifdef HAVE_LDAP_SSL
160	/*
161	* LDAPS protocol handler.
162	*/
163
164	const struct Curl_handler Curl_handler_ldaps = {
165	"LDAPS", /* scheme */
166	ZERO_NULL, /* setup_connection */
167	Curl_ldap, /* do_it */
168	ZERO_NULL, /* done */
169	ZERO_NULL, /* do_more */
170	ZERO_NULL, /* connect_it */
171	ZERO_NULL, /* connecting */
172	ZERO_NULL, /* doing */
173	ZERO_NULL, /* proto_getsock */
174	ZERO_NULL, /* doing_getsock */
175	ZERO_NULL, /* domore_getsock */
176	ZERO_NULL, /* perform_getsock */
177	ZERO_NULL, /* disconnect */
178	ZERO_NULL, /* readwrite */
179	ZERO_NULL, /* connection_check */
180	PORT_LDAPS, /* defport */
181	CURLPROTO_LDAPS, /* protocol */
182	PROTOPT_SSL /* flags */
183	};
184	#endif
185
186	#if defined(USE_WIN32_LDAP)
187
188	#if defined(USE_WINDOWS_SSPI)
189	static int ldap_win_bind_auth(LDAP server, const char user,
190	const char *passwd, unsigned long authflags)
191	{
192	ULONG method = 0;
193	SEC_WINNT_AUTH_IDENTITY cred;
194	int rc = LDAP_AUTH_METHOD_NOT_SUPPORTED;
195
196	memset(&cred, 0, sizeof(cred));
197
198	#if defined(USE_SPNEGO)
199	if(authflags & CURLAUTH_NEGOTIATE) {
200	method = LDAP_AUTH_NEGOTIATE;
201	}
202	else
203	#endif
204	#if defined(USE_NTLM)
205	if(authflags & CURLAUTH_NTLM) {
206	method = LDAP_AUTH_NTLM;
207	}
208	else
209	#endif
210	#if !defined(CURL_DISABLE_CRYPTO_AUTH)
211	if(authflags & CURLAUTH_DIGEST) {
212	method = LDAP_AUTH_DIGEST;
213	}
214	else
215	#endif
216	{
217	/* required anyway if one of upper preprocessor definitions enabled */
218	}
219
220	if(method && user && passwd) {
221	rc = Curl_create_sspi_identity(user, passwd, &cred);
222	if(!rc) {
223	rc = ldap_bind_s(server, NULL, (TCHAR *)&cred, method);
224	Curl_sspi_free_identity(&cred);
225	}
226	}
227	else {
228	/* proceed with current user credentials */
229	method = LDAP_AUTH_NEGOTIATE;
230	rc = ldap_bind_s(server, NULL, NULL, method);
231	}
232	return rc;
233	}
234	#endif /* #if defined(USE_WINDOWS_SSPI) */
235
236	static int ldap_win_bind(struct connectdata conn, LDAP server,
237	const char user, const char passwd)
238	{
239	int rc = LDAP_INVALID_CREDENTIALS;
240
241	PTCHAR inuser = NULL;
242	PTCHAR inpass = NULL;
243
244	if(user && passwd && (conn->data->set.httpauth & CURLAUTH_BASIC)) {
245	inuser = Curl_convert_UTF8_to_tchar((char *) user);
246	inpass = Curl_convert_UTF8_to_tchar((char *) passwd);
247
248	rc = ldap_simple_bind_s(server, inuser, inpass);
249
250	Curl_unicodefree(inuser);
251	Curl_unicodefree(inpass);
252	}
253	#if defined(USE_WINDOWS_SSPI)
254	else {
255	rc = ldap_win_bind_auth(server, user, passwd, conn->data->set.httpauth);
256	}
257	#endif
258
259	return rc;
260	}
261	#endif /* #if defined(USE_WIN32_LDAP) */
262
263	static CURLcode Curl_ldap(struct connectdata conn, bool done)
264	{
265	CURLcode result = CURLE_OK;
266	int rc = 0;
267	LDAP *server = NULL;
268	LDAPURLDesc *ludp = NULL;
269	LDAPMessage *ldapmsg = NULL;
270	LDAPMessage *entryIterator;
271	int num = 0;
272	struct Curl_easy *data = conn->data;
273	int ldap_proto = LDAP_VERSION3;
274	int ldap_ssl = 0;
275	char *val_b64 = NULL;
276	size_t val_b64_sz = 0;
277	curl_off_t dlsize = 0;
278	#ifdef LDAP_OPT_NETWORK_TIMEOUT
279	struct timeval ldap_timeout = {10, 0}; /* 10 sec connection/search timeout */
280	#endif
281	#if defined(USE_WIN32_LDAP)
282	TCHAR *host = NULL;
283	#else
284	char *host = NULL;
285	#endif
286	char *user = NULL;
287	char *passwd = NULL;
288
289	done = TRUE; / unconditionally */
290	infof(data, "LDAP local: LDAP Vendor = %s ; LDAP Version = %d\n",
291	LDAP_VENDOR_NAME, LDAP_VENDOR_VERSION);
292	infof(data, "LDAP local: %s\n", data->change.url);
293
294	#ifdef HAVE_LDAP_URL_PARSE
295	rc = ldap_url_parse(data->change.url, &ludp);
296	#else
297	rc = _ldap_url_parse(conn, &ludp);
298	#endif
299	if(rc != 0) {
300	failf(data, "LDAP local: %s", ldap_err2string(rc));
301	result = CURLE_LDAP_INVALID_URL;
302	goto quit;
303	}
304
305	/* Get the URL scheme (either ldap or ldaps) */
306	if(conn->given->flags & PROTOPT_SSL)
307	ldap_ssl = 1;
308	infof(data, "LDAP local: trying to establish %s connection\n",
309	ldap_ssl ? "encrypted" : "cleartext");
310
311	#if defined(USE_WIN32_LDAP)
312	host = Curl_convert_UTF8_to_tchar(conn->host.name);
313	if(!host) {
314	result = CURLE_OUT_OF_MEMORY;
315
316	goto quit;
317	}
318	#else
319	host = conn->host.name;
320	#endif
321
322	if(conn->bits.user_passwd) {
323	user = conn->user;
324	passwd = conn->passwd;
325	}
326
327	#ifdef LDAP_OPT_NETWORK_TIMEOUT
328	ldap_set_option(NULL, LDAP_OPT_NETWORK_TIMEOUT, &ldap_timeout);
329	#endif
330	ldap_set_option(NULL, LDAP_OPT_PROTOCOL_VERSION, &ldap_proto);
331
332	if(ldap_ssl) {
333	#ifdef HAVE_LDAP_SSL
334	#ifdef USE_WIN32_LDAP
335	/* Win32 LDAP SDK doesn't support insecure mode without CA! */
336	server = ldap_sslinit(host, (int)conn->port, 1);
337	ldap_set_option(server, LDAP_OPT_SSL, LDAP_OPT_ON);
338	#else
339	int ldap_option;
340	char *ldap_ca = conn->ssl_config.CAfile;
341	#if defined(CURL_HAS_NOVELL_LDAPSDK)
342	rc = ldapssl_client_init(NULL, NULL);
343	if(rc != LDAP_SUCCESS) {
344	failf(data, "LDAP local: ldapssl_client_init %s", ldap_err2string(rc));
345	result = CURLE_SSL_CERTPROBLEM;
346	goto quit;
347	}
348	if(conn->ssl_config.verifypeer) {
349	/* Novell SDK supports DER or BASE64 files. */
350	int cert_type = LDAPSSL_CERT_FILETYPE_B64;
351	if((data->set.ssl.cert_type) &&
352	(strcasecompare(data->set.ssl.cert_type, "DER")))
353	cert_type = LDAPSSL_CERT_FILETYPE_DER;
354	if(!ldap_ca) {
355	failf(data, "LDAP local: ERROR %s CA cert not set!",
356	(cert_type == LDAPSSL_CERT_FILETYPE_DER ? "DER" : "PEM"));
357	result = CURLE_SSL_CERTPROBLEM;
358	goto quit;
359	}
360	infof(data, "LDAP local: using %s CA cert '%s'\n",
361	(cert_type == LDAPSSL_CERT_FILETYPE_DER ? "DER" : "PEM"),
362	ldap_ca);
363	rc = ldapssl_add_trusted_cert(ldap_ca, cert_type);
364	if(rc != LDAP_SUCCESS) {
365	failf(data, "LDAP local: ERROR setting %s CA cert: %s",
366	(cert_type == LDAPSSL_CERT_FILETYPE_DER ? "DER" : "PEM"),
367	ldap_err2string(rc));
368	result = CURLE_SSL_CERTPROBLEM;
369	goto quit;
370	}
371	ldap_option = LDAPSSL_VERIFY_SERVER;
372	}
373	else
374	ldap_option = LDAPSSL_VERIFY_NONE;
375	rc = ldapssl_set_verify_mode(ldap_option);
376	if(rc != LDAP_SUCCESS) {
377	failf(data, "LDAP local: ERROR setting cert verify mode: %s",
378	ldap_err2string(rc));
379	result = CURLE_SSL_CERTPROBLEM;
380	goto quit;
381	}
382	server = ldapssl_init(host, (int)conn->port, 1);
383	if(server == NULL) {
384	failf(data, "LDAP local: Cannot connect to %s:%ld",
385	conn->host.dispname, conn->port);
386	result = CURLE_COULDNT_CONNECT;
387	goto quit;
388	}
389	#elif defined(LDAP_OPT_X_TLS)
390	if(conn->ssl_config.verifypeer) {
391	/* OpenLDAP SDK supports BASE64 files. */
392	if((data->set.ssl.cert_type) &&
393	(!strcasecompare(data->set.ssl.cert_type, "PEM"))) {
394	failf(data, "LDAP local: ERROR OpenLDAP only supports PEM cert-type!");
395	result = CURLE_SSL_CERTPROBLEM;
396	goto quit;
397	}
398	if(!ldap_ca) {
399	failf(data, "LDAP local: ERROR PEM CA cert not set!");
400	result = CURLE_SSL_CERTPROBLEM;
401	goto quit;
402	}
403	infof(data, "LDAP local: using PEM CA cert: %s\n", ldap_ca);
404	rc = ldap_set_option(NULL, LDAP_OPT_X_TLS_CACERTFILE, ldap_ca);
405	if(rc != LDAP_SUCCESS) {
406	failf(data, "LDAP local: ERROR setting PEM CA cert: %s",
407	ldap_err2string(rc));
408	result = CURLE_SSL_CERTPROBLEM;
409	goto quit;
410	}
411	ldap_option = LDAP_OPT_X_TLS_DEMAND;
412	}
413	else
414	ldap_option = LDAP_OPT_X_TLS_NEVER;
415
416	rc = ldap_set_option(NULL, LDAP_OPT_X_TLS_REQUIRE_CERT, &ldap_option);
417	if(rc != LDAP_SUCCESS) {
418	failf(data, "LDAP local: ERROR setting cert verify mode: %s",
419	ldap_err2string(rc));
420	result = CURLE_SSL_CERTPROBLEM;
421	goto quit;
422	}
423	server = ldap_init(host, (int)conn->port);
424	if(server == NULL) {
425	failf(data, "LDAP local: Cannot connect to %s:%ld",
426	conn->host.dispname, conn->port);
427	result = CURLE_COULDNT_CONNECT;
428	goto quit;
429	}
430	ldap_option = LDAP_OPT_X_TLS_HARD;
431	rc = ldap_set_option(server, LDAP_OPT_X_TLS, &ldap_option);
432	if(rc != LDAP_SUCCESS) {
433	failf(data, "LDAP local: ERROR setting SSL/TLS mode: %s",
434	ldap_err2string(rc));
435	result = CURLE_SSL_CERTPROBLEM;
436	goto quit;
437	}
438	/*
439	rc = ldap_start_tls_s(server, NULL, NULL);
440	if(rc != LDAP_SUCCESS) {
441	failf(data, "LDAP local: ERROR starting SSL/TLS mode: %s",
442	ldap_err2string(rc));
443	result = CURLE_SSL_CERTPROBLEM;
444	goto quit;
445	}
446	*/
447	#else
448	/* we should probably never come up to here since configure
449	should check in first place if we can support LDAP SSL/TLS */
450	failf(data, "LDAP local: SSL/TLS not supported with this version "
451	"of the OpenLDAP toolkit\n");
452	result = CURLE_SSL_CERTPROBLEM;
453	goto quit;
454	#endif
455	#endif
456	#endif /* CURL_LDAP_USE_SSL */
457	}
458	else {
459	server = ldap_init(host, (int)conn->port);
460	if(server == NULL) {
461	failf(data, "LDAP local: Cannot connect to %s:%ld",
462	conn->host.dispname, conn->port);
463	result = CURLE_COULDNT_CONNECT;
464	goto quit;
465	}
466	}
467	#ifdef USE_WIN32_LDAP
468	ldap_set_option(server, LDAP_OPT_PROTOCOL_VERSION, &ldap_proto);
469	#endif
470
471	#ifdef USE_WIN32_LDAP
472	rc = ldap_win_bind(conn, server, user, passwd);
473	#else
474	rc = ldap_simple_bind_s(server, user, passwd);
475	#endif
476	if(!ldap_ssl && rc != 0) {
477	ldap_proto = LDAP_VERSION2;
478	ldap_set_option(server, LDAP_OPT_PROTOCOL_VERSION, &ldap_proto);
479	#ifdef USE_WIN32_LDAP
480	rc = ldap_win_bind(conn, server, user, passwd);
481	#else
482	rc = ldap_simple_bind_s(server, user, passwd);
483	#endif
484	}
485	if(rc != 0) {
486	failf(data, "LDAP local: ldap_simple_bind_s %s", ldap_err2string(rc));
487	result = CURLE_LDAP_CANNOT_BIND;
488	goto quit;
489	}
490
491	rc = ldap_search_s(server, ludp->lud_dn, ludp->lud_scope,
492	ludp->lud_filter, ludp->lud_attrs, 0, &ldapmsg);
493
494	if(rc != 0 && rc != LDAP_SIZELIMIT_EXCEEDED) {
495	failf(data, "LDAP remote: %s", ldap_err2string(rc));
496	result = CURLE_LDAP_SEARCH_FAILED;
497	goto quit;
498	}
499
500	for(num = 0, entryIterator = ldap_first_entry(server, ldapmsg);
501	entryIterator;
502	entryIterator = ldap_next_entry(server, entryIterator), num++) {
503	BerElement *ber = NULL;
504	#if defined(USE_WIN32_LDAP)
505	TCHAR *attribute;
506	#else
507	char attribute; /! suspicious that this isn't 'const' */
508	#endif
509	int i;
510
511	/* Get the DN and write it to the client */
512	{
513	char *name;
514	size_t name_len;
515	#if defined(USE_WIN32_LDAP)
516	TCHAR *dn = ldap_get_dn(server, entryIterator);
517	name = Curl_convert_tchar_to_UTF8(dn);
518	if(!name) {
519	ldap_memfree(dn);
520
521	result = CURLE_OUT_OF_MEMORY;
522
523	goto quit;
524	}
525	#else
526	char *dn = name = ldap_get_dn(server, entryIterator);
527	#endif
528	name_len = strlen(name);
529
530	result = Curl_client_write(conn, CLIENTWRITE_BODY, (char *)"DN: ", 4);
531	if(result) {
532	#if defined(USE_WIN32_LDAP)
533	Curl_unicodefree(name);
534	#endif
535	ldap_memfree(dn);
536
537	goto quit;
538	}
539
540	result = Curl_client_write(conn, CLIENTWRITE_BODY, (char *) name,
541	name_len);
542	if(result) {
543	#if defined(USE_WIN32_LDAP)
544	Curl_unicodefree(name);
545	#endif
546	ldap_memfree(dn);
547
548	goto quit;
549	}
550
551	result = Curl_client_write(conn, CLIENTWRITE_BODY, (char *)"\n", 1);
552	if(result) {
553	#if defined(USE_WIN32_LDAP)
554	Curl_unicodefree(name);
555	#endif
556	ldap_memfree(dn);
557
558	goto quit;
559	}
560
561	dlsize += name_len + 5;
562
563	#if defined(USE_WIN32_LDAP)
564	Curl_unicodefree(name);
565	#endif
566	ldap_memfree(dn);
567	}
568
569	/* Get the attributes and write them to the client */
570	for(attribute = ldap_first_attribute(server, entryIterator, &ber);
571	attribute;
572	attribute = ldap_next_attribute(server, entryIterator, ber)) {
573	BerValue **vals;
574	size_t attr_len;
575	#if defined(USE_WIN32_LDAP)
576	char *attr = Curl_convert_tchar_to_UTF8(attribute);
577	if(!attr) {
578	if(ber)
579	ber_free(ber, 0);
580
581	result = CURLE_OUT_OF_MEMORY;
582
583	goto quit;
584	}
585	#else
586	char *attr = attribute;
587	#endif
588	attr_len = strlen(attr);
589
590	vals = ldap_get_values_len(server, entryIterator, attribute);
591	if(vals != NULL) {
592	for(i = 0; (vals[i] != NULL); i++) {
593	result = Curl_client_write(conn, CLIENTWRITE_BODY, (char *)"\t", 1);
594	if(result) {
595	ldap_value_free_len(vals);
596	#if defined(USE_WIN32_LDAP)
597	Curl_unicodefree(attr);
598	#endif
599	ldap_memfree(attribute);
600	if(ber)
601	ber_free(ber, 0);
602
603	goto quit;
604	}
605
606	result = Curl_client_write(conn, CLIENTWRITE_BODY,
607	(char *) attr, attr_len);
608	if(result) {
609	ldap_value_free_len(vals);
610	#if defined(USE_WIN32_LDAP)
611	Curl_unicodefree(attr);
612	#endif
613	ldap_memfree(attribute);
614	if(ber)
615	ber_free(ber, 0);
616
617	goto quit;
618	}
619
620	result = Curl_client_write(conn, CLIENTWRITE_BODY, (char *)": ", 2);
621	if(result) {
622	ldap_value_free_len(vals);
623	#if defined(USE_WIN32_LDAP)
624	Curl_unicodefree(attr);
625	#endif
626	ldap_memfree(attribute);
627	if(ber)
628	ber_free(ber, 0);
629
630	goto quit;
631	}
632
633	dlsize += attr_len + 3;
634
635	if((attr_len > 7) &&
636	(strcmp(";binary", (char *) attr + (attr_len - 7)) == 0)) {
637	/* Binary attribute, encode to base64. */
638	result = Curl_base64_encode(data,
639	vals[i]->bv_val,
640	vals[i]->bv_len,
641	&val_b64,
642	&val_b64_sz);
643	if(result) {
644	ldap_value_free_len(vals);
645	#if defined(USE_WIN32_LDAP)
646	Curl_unicodefree(attr);
647	#endif
648	ldap_memfree(attribute);
649	if(ber)
650	ber_free(ber, 0);
651
652	goto quit;
653	}
654
655	if(val_b64_sz > 0) {
656	result = Curl_client_write(conn, CLIENTWRITE_BODY, val_b64,
657	val_b64_sz);
658	free(val_b64);
659	if(result) {
660	ldap_value_free_len(vals);
661	#if defined(USE_WIN32_LDAP)
662	Curl_unicodefree(attr);
663	#endif
664	ldap_memfree(attribute);
665	if(ber)
666	ber_free(ber, 0);
667
668	goto quit;
669	}
670
671	dlsize += val_b64_sz;
672	}
673	}
674	else {
675	result = Curl_client_write(conn, CLIENTWRITE_BODY, vals[i]->bv_val,
676	vals[i]->bv_len);
677	if(result) {
678	ldap_value_free_len(vals);
679	#if defined(USE_WIN32_LDAP)
680	Curl_unicodefree(attr);
681	#endif
682	ldap_memfree(attribute);
683	if(ber)
684	ber_free(ber, 0);
685
686	goto quit;
687	}
688
689	dlsize += vals[i]->bv_len;
690	}
691
692	result = Curl_client_write(conn, CLIENTWRITE_BODY, (char *)"\n", 1);
693	if(result) {
694	ldap_value_free_len(vals);
695	#if defined(USE_WIN32_LDAP)
696	Curl_unicodefree(attr);
697	#endif
698	ldap_memfree(attribute);
699	if(ber)
700	ber_free(ber, 0);
701
702	goto quit;
703	}
704
705	dlsize++;
706	}
707
708	/* Free memory used to store values */
709	ldap_value_free_len(vals);
710	}
711
712	/* Free the attribute as we are done with it */
713	#if defined(USE_WIN32_LDAP)
714	Curl_unicodefree(attr);
715	#endif
716	ldap_memfree(attribute);
717
718	result = Curl_client_write(conn, CLIENTWRITE_BODY, (char *)"\n", 1);
719	if(result)
720	goto quit;
721	dlsize++;
722	Curl_pgrsSetDownloadCounter(data, dlsize);
723	}
724
725	if(ber)
726	ber_free(ber, 0);
727	}
728
729	quit:
730	if(ldapmsg) {
731	ldap_msgfree(ldapmsg);
732	LDAP_TRACE(("Received %d entries\n", num));
733	}
734	if(rc == LDAP_SIZELIMIT_EXCEEDED)
735	infof(data, "There are more than %d entries\n", num);
736	if(ludp)
737	ldap_free_urldesc(ludp);
738	if(server)
739	ldap_unbind_s(server);
740	#if defined(HAVE_LDAP_SSL) && defined(CURL_HAS_NOVELL_LDAPSDK)
741	if(ldap_ssl)
742	ldapssl_client_deinit();
743	#endif /* HAVE_LDAP_SSL && CURL_HAS_NOVELL_LDAPSDK */
744
745	#if defined(USE_WIN32_LDAP)
746	Curl_unicodefree(host);
747	#endif
748
749	/* no data to transfer */
750	Curl_setup_transfer(conn, -1, -1, FALSE, NULL, -1, NULL);
751	connclose(conn, "LDAP connection always disable re-use");
752
753	return result;
754	}
755
756	#ifdef DEBUG_LDAP
757	static void _ldap_trace(const char *fmt, ...)
758	{
759	static int do_trace = -1;
760	va_list args;
761
762	if(do_trace == -1) {
763	const char *env = getenv("CURL_TRACE");
764	do_trace = (env && strtol(env, NULL, 10) > 0);
765	}
766	if(!do_trace)
767	return;
768
769	va_start(args, fmt);
770	vfprintf(stderr, fmt, args);
771	va_end(args);
772	}
773	#endif
774
775	#ifndef HAVE_LDAP_URL_PARSE
776
777	/*
778	* Return scope-value for a scope-string.
779	*/
780	static int str2scope(const char *p)
781	{
782	if(strcasecompare(p, "one"))
783	return LDAP_SCOPE_ONELEVEL;
784	if(strcasecompare(p, "onetree"))
785	return LDAP_SCOPE_ONELEVEL;
786	if(strcasecompare(p, "base"))
787	return LDAP_SCOPE_BASE;
788	if(strcasecompare(p, "sub"))
789	return LDAP_SCOPE_SUBTREE;
790	if(strcasecompare(p, "subtree"))
791	return LDAP_SCOPE_SUBTREE;
792	return (-1);
793	}
794
795	/*
796	* Split 'str' into strings separated by commas.
797	* Note: out[] points into 'str'.
798	*/
799	static bool split_str(char str, char *out, size_t count)
800	{
801	char **res;
802	char *lasts;
803	char *s;
804	size_t i;
805	size_t items = 1;
806
807	s = strchr(str, ',');
808	while(s) {
809	items++;
810	s = strchr(++s, ',');
811	}
812
813	res = calloc(items, sizeof(char *));
814	if(!res)
815	return FALSE;
816
817	for(i = 0, s = strtok_r(str, ",", &lasts); s && i < items;
818	s = strtok_r(NULL, ",", &lasts), i++)
819	res[i] = s;
820
821	*out = res;
822	*count = items;
823
824	return TRUE;
825	}
826
827	/*
828	* Break apart the pieces of an LDAP URL.
829	* Syntax:
830	* ldap://<hostname>:<port>/<base_dn>?<attributes>?<scope>?<filter>?<ext>
831	*
832	* <hostname> already known from 'conn->host.name'.
833	* <port> already known from 'conn->remote_port'.
834	* extract the rest from 'conn->data->state.path+1'. All fields are optional.
835	* e.g.
836	* ldap://<hostname>:<port>/?<attributes>?<scope>?<filter>
837	* yields ludp->lud_dn = "".
838	*
839	* Defined in RFC4516 section 2.
840	*/
841	static int _ldap_url_parse2(const struct connectdata conn, LDAPURLDesc ludp)
842	{
843	int rc = LDAP_SUCCESS;
844	char *path;
845	char *p;
846	char *q;
847	size_t i;
848
849	if(!conn->data \|\|
850	!conn->data->state.path \|\|
851	conn->data->state.path[0] != '/' \|\|
852	!checkprefix("LDAP", conn->data->change.url))
853	return LDAP_INVALID_SYNTAX;
854
855	ludp->lud_scope = LDAP_SCOPE_BASE;
856	ludp->lud_port = conn->remote_port;
857	ludp->lud_host = conn->host.name;
858
859	/* Duplicate the path */
860	p = path = strdup(conn->data->state.path + 1);
861	if(!path)
862	return LDAP_NO_MEMORY;
863
864	/* Parse the DN (Distinguished Name) */
865	q = strchr(p, '?');
866	if(q)
867	*q++ = '\0';
868
869	if(*p) {
870	char *dn = p;
871	char *unescaped;
872	CURLcode result;
873
874	LDAP_TRACE(("DN '%s'\n", dn));
875
876	/* Unescape the DN */
877	result = Curl_urldecode(conn->data, dn, 0, &unescaped, NULL, FALSE);
878	if(result) {
879	rc = LDAP_NO_MEMORY;
880
881	goto quit;
882	}
883
884	#if defined(USE_WIN32_LDAP)
885	/* Convert the unescaped string to a tchar */
886	ludp->lud_dn = Curl_convert_UTF8_to_tchar(unescaped);
887
888	/* Free the unescaped string as we are done with it */
889	Curl_unicodefree(unescaped);
890
891	if(!ludp->lud_dn) {
892	rc = LDAP_NO_MEMORY;
893
894	goto quit;
895	}
896	#else
897	ludp->lud_dn = unescaped;
898	#endif
899	}
900
901	p = q;
902	if(!p)
903	goto quit;
904
905	/* Parse the attributes. skip "??" */
906	q = strchr(p, '?');
907	if(q)
908	*q++ = '\0';
909
910	if(*p) {
911	char **attributes;
912	size_t count = 0;
913
914	/* Split the string into an array of attributes */
915	if(!split_str(p, &attributes, &count)) {
916	rc = LDAP_NO_MEMORY;
917
918	goto quit;
919	}
920
921	/* Allocate our array (+1 for the NULL entry) */
922	#if defined(USE_WIN32_LDAP)
923	ludp->lud_attrs = calloc(count + 1, sizeof(TCHAR *));
924	#else
925	ludp->lud_attrs = calloc(count + 1, sizeof(char *));
926	#endif
927	if(!ludp->lud_attrs) {
928	free(attributes);
929
930	rc = LDAP_NO_MEMORY;
931
932	goto quit;
933	}
934
935	for(i = 0; i < count; i++) {
936	char *unescaped;
937	CURLcode result;
938
939	LDAP_TRACE(("attr[%d] '%s'\n", i, attributes[i]));
940
941	/* Unescape the attribute */
942	result = Curl_urldecode(conn->data, attributes[i], 0, &unescaped, NULL,
943	FALSE);
944	if(result) {
945	free(attributes);
946
947	rc = LDAP_NO_MEMORY;
948
949	goto quit;
950	}
951
952	#if defined(USE_WIN32_LDAP)
953	/* Convert the unescaped string to a tchar */
954	ludp->lud_attrs[i] = Curl_convert_UTF8_to_tchar(unescaped);
955
956	/* Free the unescaped string as we are done with it */
957	Curl_unicodefree(unescaped);
958
959	if(!ludp->lud_attrs[i]) {
960	free(attributes);
961
962	rc = LDAP_NO_MEMORY;
963
964	goto quit;
965	}
966	#else
967	ludp->lud_attrs[i] = unescaped;
968	#endif
969
970	ludp->lud_attrs_dups++;
971	}
972
973	free(attributes);
974	}
975
976	p = q;
977	if(!p)
978	goto quit;
979
980	/* Parse the scope. skip "??" */
981	q = strchr(p, '?');
982	if(q)
983	*q++ = '\0';
984
985	if(*p) {
986	ludp->lud_scope = str2scope(p);
987	if(ludp->lud_scope == -1) {
988	rc = LDAP_INVALID_SYNTAX;
989
990	goto quit;
991	}
992	LDAP_TRACE(("scope %d\n", ludp->lud_scope));
993	}
994
995	p = q;
996	if(!p)
997	goto quit;
998
999	/* Parse the filter */
1000	q = strchr(p, '?');
1001	if(q)
1002	*q++ = '\0';
1003
1004	if(*p) {
1005	char *filter = p;
1006	char *unescaped;
1007	CURLcode result;
1008
1009	LDAP_TRACE(("filter '%s'\n", filter));
1010
1011	/* Unescape the filter */
1012	result = Curl_urldecode(conn->data, filter, 0, &unescaped, NULL, FALSE);
1013	if(result) {
1014	rc = LDAP_NO_MEMORY;
1015
1016	goto quit;
1017	}
1018
1019	#if defined(USE_WIN32_LDAP)
1020	/* Convert the unescaped string to a tchar */
1021	ludp->lud_filter = Curl_convert_UTF8_to_tchar(unescaped);
1022
1023	/* Free the unescaped string as we are done with it */
1024	Curl_unicodefree(unescaped);
1025
1026	if(!ludp->lud_filter) {
1027	rc = LDAP_NO_MEMORY;
1028
1029	goto quit;
1030	}
1031	#else
1032	ludp->lud_filter = unescaped;
1033	#endif
1034	}
1035
1036	p = q;
1037	if(p && !*p) {
1038	rc = LDAP_INVALID_SYNTAX;
1039
1040	goto quit;
1041	}
1042
1043	quit:
1044	free(path);
1045
1046	return rc;
1047	}
1048
1049	static int _ldap_url_parse(const struct connectdata *conn,
1050	LDAPURLDesc **ludpp)
1051	{
1052	LDAPURLDesc ludp = calloc(1, sizeof(ludp));
1053	int rc;
1054
1055	*ludpp = NULL;
1056	if(!ludp)
1057	return LDAP_NO_MEMORY;
1058
1059	rc = _ldap_url_parse2(conn, ludp);
1060	if(rc != LDAP_SUCCESS) {
1061	_ldap_free_urldesc(ludp);
1062	ludp = NULL;
1063	}
1064	*ludpp = ludp;
1065	return (rc);
1066	}
1067
1068	static void _ldap_free_urldesc(LDAPURLDesc *ludp)
1069	{
1070	size_t i;
1071
1072	if(!ludp)
1073	return;
1074
1075	free(ludp->lud_dn);
1076	free(ludp->lud_filter);
1077
1078	if(ludp->lud_attrs) {
1079	for(i = 0; i < ludp->lud_attrs_dups; i++)
1080	free(ludp->lud_attrs[i]);
1081	free(ludp->lud_attrs);
1082	}
1083
1084	free(ludp);
1085	}
1086	#endif /* !HAVE_LDAP_URL_PARSE */
1087	#endif /* !CURL_DISABLE_LDAP && !USE_OPENLDAP */

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source: EcnlProtoTool/trunk/curl-7.57.0/lib/ldap.c@ 331

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