2 Unix SMB/CIFS implementation.
3 Infrastructure for async ldap client requests
4 Copyright (C) Volker Lendecke 2009
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program. If not, see <http://www.gnu.org/licenses/>.
22 bool tldap_entry_values(struct tldap_message *msg, const char *attribute,
23 int *num_values, DATA_BLOB **values)
25 struct tldap_attribute *attributes;
26 int i, num_attributes;
28 if (!tldap_entry_attributes(msg, &num_attributes, &attributes)) {
32 for (i=0; i<num_attributes; i++) {
33 if (strequal(attribute, attributes[i].name)) {
37 if (i == num_attributes) {
40 *num_values = attributes[i].num_values;
41 *values = attributes[i].values;
45 bool tldap_get_single_valueblob(struct tldap_message *msg,
46 const char *attribute, DATA_BLOB *blob)
51 if (attribute == NULL) {
54 if (!tldap_entry_values(msg, attribute, &num_values, &values)) {
57 if (num_values != 1) {
64 char *tldap_talloc_single_attribute(struct tldap_message *msg,
65 const char *attribute,
72 if (!tldap_get_single_valueblob(msg, attribute, &val)) {
75 if (!convert_string_talloc(mem_ctx, CH_UTF8, CH_UNIX,
77 &result, &len, false)) {
83 bool tldap_pull_binsid(struct tldap_message *msg, const char *attribute,
88 if (!tldap_get_single_valueblob(msg, attribute, &val)) {
91 return sid_parse((char *)val.data, val.length, sid);
94 static bool tldap_add_blob_vals(TALLOC_CTX *mem_ctx, struct tldap_mod *mod,
95 int num_newvals, DATA_BLOB *newvals)
97 int num_values = talloc_array_length(mod->values);
101 tmp = talloc_realloc(mem_ctx, mod->values, DATA_BLOB,
102 num_values + num_newvals);
108 for (i=0; i<num_newvals; i++) {
109 mod->values[i+num_values].data = (uint8_t *)talloc_memdup(
110 mod->values, newvals[i].data, newvals[i].length);
111 if (mod->values[i+num_values].data == NULL) {
114 mod->values[i+num_values].length = newvals[i].length;
116 mod->num_values = num_values + num_newvals;
120 bool tldap_add_mod_blobs(TALLOC_CTX *mem_ctx, struct tldap_mod **pmods,
121 int mod_op, const char *attrib,
122 int num_newvals, DATA_BLOB *newvals)
124 struct tldap_mod new_mod;
125 struct tldap_mod *mods = *pmods;
126 struct tldap_mod *mod = NULL;
130 mods = talloc_array(mem_ctx, struct tldap_mod, 0);
136 num_mods = talloc_array_length(mods);
138 for (i=0; i<num_mods; i++) {
139 if ((mods[i].mod_op == mod_op)
140 && strequal(mods[i].attribute, attrib)) {
147 new_mod.mod_op = mod_op;
148 new_mod.attribute = talloc_strdup(mods, attrib);
149 if (new_mod.attribute == NULL) {
152 new_mod.num_values = 0;
153 new_mod.values = NULL;
157 if ((num_newvals != 0)
158 && !tldap_add_blob_vals(mods, mod, num_newvals, newvals)) {
163 mods = talloc_realloc(talloc_tos(), mods, struct tldap_mod,
168 mods[num_mods] = *mod;
175 bool tldap_add_mod_str(TALLOC_CTX *mem_ctx, struct tldap_mod **pmods,
176 int mod_op, const char *attrib, const char *str)
181 if (!convert_string_talloc(talloc_tos(), CH_UNIX, CH_UTF8, str,
182 strlen(str), &utf8.data, &utf8.length,
187 ret = tldap_add_mod_blobs(mem_ctx, pmods, mod_op, attrib, 1, &utf8);
188 TALLOC_FREE(utf8.data);
192 static bool tldap_make_mod_blob_int(struct tldap_message *existing,
194 int *pnum_mods, struct tldap_mod **pmods,
195 const char *attrib, DATA_BLOB newval,
196 int (*comparison)(const DATA_BLOB *d1,
197 const DATA_BLOB *d2))
200 DATA_BLOB *values = NULL;
201 DATA_BLOB oldval = data_blob_null;
203 if ((existing != NULL)
204 && tldap_entry_values(existing, attrib, &num_values, &values)) {
206 if (num_values > 1) {
207 /* can't change multivalue attributes atm */
210 if (num_values == 1) {
215 if ((oldval.data != NULL) && (newval.data != NULL)
216 && (comparison(&oldval, &newval) == 0)) {
217 /* Believe it or not, but LDAP will deny a delete and
218 an add at the same time if the values are the
220 DEBUG(10,("smbldap_make_mod_blob: attribute |%s| not "
221 "changed.\n", attrib));
225 if (oldval.data != NULL) {
226 /* By deleting exactly the value we found in the entry this
227 * should be race-free in the sense that the LDAP-Server will
228 * deny the complete operation if somebody changed the
229 * attribute behind our back. */
230 /* This will also allow modifying single valued attributes in
231 * Novell NDS. In NDS you have to first remove attribute and
232 * then you could add new value */
234 DEBUG(10, ("smbldap_make_mod_blob: deleting attribute |%s|\n",
236 if (!tldap_add_mod_blobs(mem_ctx, pmods, TLDAP_MOD_DELETE,
237 attrib, 1, &oldval)) {
242 /* Regardless of the real operation (add or modify)
243 we add the new value here. We rely on deleting
244 the old value, should it exist. */
246 if (newval.data != NULL) {
247 DEBUG(10, ("smbldap_make_mod: adding attribute |%s| value len "
248 "%d\n", attrib, (int)newval.length));
249 if (!tldap_add_mod_blobs(mem_ctx, pmods, TLDAP_MOD_ADD,
250 attrib, 1, &newval)) {
254 *pnum_mods = talloc_array_length(*pmods);
258 bool tldap_make_mod_blob(struct tldap_message *existing, TALLOC_CTX *mem_ctx,
259 int *pnum_mods, struct tldap_mod **pmods,
260 const char *attrib, DATA_BLOB newval)
262 return tldap_make_mod_blob_int(existing, mem_ctx, pnum_mods, pmods,
263 attrib, newval, data_blob_cmp);
266 static int compare_utf8_blobs(const DATA_BLOB *d1, const DATA_BLOB *d2)
272 if (!convert_string_talloc(talloc_tos(), CH_UTF8, CH_UNIX, d1->data,
273 d1->length, &s1, &s1len, false)) {
274 /* can't do much here */
277 if (!convert_string_talloc(talloc_tos(), CH_UTF8, CH_UNIX, d2->data,
278 d2->length, &s2, &s2len, false)) {
279 /* can't do much here */
283 ret = StrCaseCmp(s1, s2);
289 bool tldap_make_mod_fmt(struct tldap_message *existing, TALLOC_CTX *mem_ctx,
290 int *pnum_mods, struct tldap_mod **pmods,
291 const char *attrib, const char *fmt, ...)
296 DATA_BLOB blob = data_blob_null;
299 newval = talloc_vasprintf(talloc_tos(), fmt, ap);
302 if (newval == NULL) {
306 blob.length = strlen(newval);
307 if (blob.length != 0) {
308 blob.data = CONST_DISCARD(uint8_t *, newval);
310 ret = tldap_make_mod_blob_int(existing, mem_ctx, pnum_mods, pmods,
311 attrib, blob, compare_utf8_blobs);
316 const char *tldap_errstr(TALLOC_CTX *mem_ctx, struct tldap_context *ld, int rc)
318 const char *ld_error = NULL;
321 ld_error = tldap_ctx_diagnosticmessage(ld);
322 res = talloc_asprintf(mem_ctx, "LDAP error %d (%s), %s", rc,
323 tldap_err2string(rc),
324 ld_error ? ld_error : "unknown");
328 int tldap_search_fmt(struct tldap_context *ld, const char *base, int scope,
329 const char *attrs[], int num_attrs, int attrsonly,
330 TALLOC_CTX *mem_ctx, struct tldap_message ***res,
331 const char *fmt, ...)
338 filter = talloc_vasprintf(talloc_tos(), fmt, ap);
341 if (filter == NULL) {
342 return TLDAP_NO_MEMORY;
344 ret = tldap_search(ld, base, scope, filter,
345 attrs, num_attrs, attrsonly,
346 NULL /*sctrls*/, 0, NULL /*cctrls*/, 0,
347 0 /*timelimit*/, 0 /*sizelimit*/, 0 /*deref*/,
353 bool tldap_pull_uint64(struct tldap_message *msg, const char *attr,
359 str = tldap_talloc_single_attribute(msg, attr, talloc_tos());
361 DEBUG(10, ("Could not find attribute %s\n", attr));
364 result = strtoull(str, NULL, 10);
370 bool tldap_pull_uint32(struct tldap_message *msg, const char *attr,
375 if (!tldap_pull_uint64(msg, attr, &result)) {
378 *presult = (uint32_t)result;
382 struct tldap_fetch_rootdse_state {
383 struct tldap_context *ld;
384 struct tldap_message *rootdse;
387 static void tldap_fetch_rootdse_done(struct tevent_req *subreq);
389 struct tevent_req *tldap_fetch_rootdse_send(TALLOC_CTX *mem_ctx,
390 struct tevent_context *ev,
391 struct tldap_context *ld)
393 struct tevent_req *req, *subreq;
394 struct tldap_fetch_rootdse_state *state;
395 static const char *attrs[2] = { "*", "+" };
397 req = tevent_req_create(mem_ctx, &state,
398 struct tldap_fetch_rootdse_state);
403 state->rootdse = NULL;
405 subreq = tldap_search_send(
406 mem_ctx, ev, ld, "", TLDAP_SCOPE_BASE, "(objectclass=*)",
407 attrs, ARRAY_SIZE(attrs), 0, NULL, 0, NULL, 0, 0, 0, 0);
408 if (tevent_req_nomem(subreq, req)) {
409 return tevent_req_post(req, ev);
411 tevent_req_set_callback(subreq, tldap_fetch_rootdse_done, req);
415 static void tldap_fetch_rootdse_done(struct tevent_req *subreq)
417 struct tevent_req *req = tevent_req_callback_data(
418 subreq, struct tevent_req);
419 struct tldap_fetch_rootdse_state *state = tevent_req_data(
420 req, struct tldap_fetch_rootdse_state);
421 struct tldap_message *msg;
424 rc = tldap_search_recv(subreq, state, &msg);
425 if (rc != TLDAP_SUCCESS) {
427 tevent_req_error(req, rc);
431 switch (tldap_msg_type(msg)) {
432 case TLDAP_RES_SEARCH_ENTRY:
433 if (state->rootdse != NULL) {
436 state->rootdse = msg;
438 case TLDAP_RES_SEARCH_RESULT:
440 if (state->rootdse == NULL) {
443 tevent_req_done(req);
448 tevent_req_done(req);
452 tevent_req_error(req, TLDAP_PROTOCOL_ERROR);
456 int tldap_fetch_rootdse_recv(struct tevent_req *req)
458 struct tldap_fetch_rootdse_state *state = tevent_req_data(
459 req, struct tldap_fetch_rootdse_state);
463 if (tevent_req_is_ldap_error(req, &err)) {
466 /* Trigger parsing the dn, just to make sure it's ok */
467 if (!tldap_entry_dn(state->rootdse, &dn)) {
468 return TLDAP_DECODING_ERROR;
470 if (!tldap_context_setattr(state->ld, "tldap:rootdse",
472 return TLDAP_NO_MEMORY;
477 int tldap_fetch_rootdse(struct tldap_context *ld)
479 TALLOC_CTX *frame = talloc_stackframe();
480 struct tevent_context *ev;
481 struct tevent_req *req;
484 ev = event_context_init(frame);
486 result = TLDAP_NO_MEMORY;
490 req = tldap_fetch_rootdse_send(frame, ev, ld);
492 result = TLDAP_NO_MEMORY;
496 if (!tevent_req_poll(req, ev)) {
497 result = TLDAP_OPERATIONS_ERROR;
501 result = tldap_fetch_rootdse_recv(req);
507 struct tldap_message *tldap_rootdse(struct tldap_context *ld)
509 return talloc_get_type(tldap_context_getattr(ld, "tldap:rootdse"),
510 struct tldap_message);
513 bool tldap_entry_has_attrvalue(struct tldap_message *msg,
514 const char *attribute,
515 const DATA_BLOB blob)
520 if (!tldap_entry_values(msg, attribute, &num_values, &values)) {
523 for (i=0; i<num_values; i++) {
524 if (data_blob_cmp(&values[i], &blob) == 0) {