2 Unix SMB/CIFS implementation.
4 Copyright (C) Volker Lendecke 2004
5 Copyright (C) Stefan Metzmacher 2004
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
25 close the socket and shutdown a server_context
27 void ldapsrv_terminate_connection(struct ldapsrv_connection *ldap_conn, const char *reason)
29 server_terminate_connection(ldap_conn->connection, reason);
33 add a socket address to the list of events, one event per port
35 static void add_socket(struct server_service *service,
36 const struct model_ops *model_ops,
39 struct server_socket *srv_sock;
41 char *ip_str = talloc_strdup(service->mem_ctx, inet_ntoa(*ifip));
43 srv_sock = service_setup_socket(service, model_ops, ip_str, &port);
48 /****************************************************************************
49 Open the socket communication.
50 ****************************************************************************/
51 static void ldapsrv_init(struct server_service *service,
52 const struct model_ops *model_ops)
54 DEBUG(1,("ldapsrv_init\n"));
56 if (lp_interfaces() && lp_bind_interfaces_only()) {
57 int num_interfaces = iface_count();
60 /* We have been given an interfaces line, and been
61 told to only bind to those interfaces. Create a
62 socket per interface and bind to only these.
64 for(i = 0; i < num_interfaces; i++) {
65 struct in_addr *ifip = iface_n_ip(i);
68 DEBUG(0,("ldapsrv_init: interface %d has NULL "
69 "IP address !\n", i));
73 add_socket(service, model_ops, ifip);
77 TALLOC_CTX *mem_ctx = talloc_init("ldapsrv_init");
80 smb_panic("No memory");
83 /* Just bind to lp_socket_address() (usually 0.0.0.0) */
84 ifip = interpret_addr2(mem_ctx, lp_socket_address());
85 add_socket(service, model_ops, ifip);
87 talloc_destroy(mem_ctx);
91 /* This rw-buf api is made to avoid memcpy. For now do that like mad... The
92 idea is to write into a circular list of buffers where the ideal case is
93 that a read(2) holds a complete request that is then thrown away
96 static void consumed_from_buf(struct rw_buffer *buf,
99 memcpy(buf->data, buf->data+length, buf->length-length);
100 buf->length -= length;
103 static BOOL append_to_buf(struct rw_buffer *buf, uint8_t *data, size_t length)
105 buf->data = realloc(buf->data, buf->length+length);
107 if (buf->data == NULL)
110 memcpy(buf->data+buf->length, data, length);
112 buf->length += length;
116 static BOOL read_into_buf(struct socket_context *sock, struct rw_buffer *buf)
122 status = socket_recv(sock, sock, &tmp_blob, 1024, 0);
123 if (!NT_STATUS_IS_OK(status)) {
124 DEBUG(0,("socket_recv: %s\n",nt_errstr(status)));
128 ret = append_to_buf(buf, tmp_blob.data, tmp_blob.length);
130 talloc_free(tmp_blob.data);
135 static BOOL write_from_buf(struct socket_context *sock, struct rw_buffer *buf)
141 tmp_blob.data = buf->data;
142 tmp_blob.length = buf->length;
144 status = socket_send(sock, sock, &tmp_blob, &sendlen, 0);
145 if (!NT_STATUS_IS_OK(status)) {
146 DEBUG(0,("socket_send() %s\n",nt_errstr(status)));
150 consumed_from_buf(buf, sendlen);
155 static void peek_into_read_buf(struct rw_buffer *buf, uint8_t **out,
159 *out_length = buf->length;
162 static BOOL ldap_append_to_buf(struct ldap_message *msg, struct rw_buffer *buf)
167 if (!ldap_encode(msg, &blob))
170 res = append_to_buf(buf, blob.data, blob.length);
172 data_blob_free(&blob);
176 struct ldapsrv_reply *ldapsrv_init_reply(struct ldapsrv_call *call, enum ldap_request_tag type)
178 struct ldapsrv_reply *reply;
180 reply = talloc_p(call, struct ldapsrv_reply);
185 reply->prev = reply->next = NULL;
186 reply->state = LDAPSRV_REPLY_STATE_NEW;
187 reply->msg.messageid = call->request.messageid;
188 reply->msg.type = type;
189 reply->msg.mem_ctx = reply;
194 void ldapsrv_queue_reply(struct ldapsrv_call *call, struct ldapsrv_reply *reply)
196 DLIST_ADD_END(call->replies, reply, struct ldapsrv_reply *);
199 struct ldapsrv_partition *ldapsrv_get_partition(struct ldapsrv_connection *conn, const char *dn)
201 static const struct ldapsrv_partition_ops null_ops;
202 static struct ldapsrv_partition null_part = {
209 void ldapsrv_unwilling(struct ldapsrv_call *call, int error)
211 struct ldapsrv_reply *reply;
212 struct ldap_ExtendedResponse *r;
214 DEBUG(0,("Unwilling type[%d] id[%d]\n", call->request.type, call->request.messageid));
216 reply = ldapsrv_init_reply(call, LDAP_TAG_ExtendedResponse);
218 ldapsrv_terminate_connection(call->conn, "ldapsrv_init_reply() failed");
222 r = &reply->msg.r.ExtendedResponse;
223 r->response.resultcode = error;
224 r->response.dn = NULL;
225 r->response.errormessage = NULL;
226 r->response.referral = NULL;
228 r->value.data = NULL;
231 ldapsrv_queue_reply(call, reply);
234 static void ldapsrv_BindRequest(struct ldapsrv_call *call)
236 struct ldap_BindRequest *req = &call->request.r.BindRequest;
237 struct ldapsrv_reply *reply;
238 struct ldap_BindResponse *resp;
240 DEBUG(5, ("BindRequest dn: %s\n",req->dn));
242 reply = ldapsrv_init_reply(call, LDAP_TAG_BindResponse);
244 ldapsrv_terminate_connection(call->conn, "ldapsrv_init_reply() failed");
248 resp = &reply->msg.r.BindResponse;
249 resp->response.resultcode = 0;
250 resp->response.dn = NULL;
251 resp->response.errormessage = NULL;
252 resp->response.referral = NULL;
253 resp->SASL.secblob = data_blob(NULL, 0);
255 ldapsrv_queue_reply(call, reply);
258 static void ldapsrv_UnbindRequest(struct ldapsrv_call *call)
260 /* struct ldap_UnbindRequest *req = &call->request->r.UnbindRequest;*/
261 DEBUG(10, ("UnbindRequest\n"));
264 static void ldapsrv_SearchRequest(struct ldapsrv_call *call)
266 struct ldap_SearchRequest *req = &call->request.r.SearchRequest;
267 struct ldapsrv_partition *part;
269 DEBUG(10, ("SearchRequest"));
270 DEBUGADD(10, (" basedn: %s", req->basedn));
271 DEBUGADD(10, (" filter: %s\n", req->filter));
273 if ((strcasecmp("", req->basedn) == 0) &&
274 (req->scope == LDAP_SEARCH_SCOPE_BASE)) {
275 ldapsrv_RootDSE_Search(call, req);
279 part = ldapsrv_get_partition(call->conn, req->basedn);
281 if (!part->ops->Search) {
282 ldapsrv_unwilling(call, 2);
286 part->ops->Search(part, call, req);
289 static void ldapsrv_ModifyRequest(struct ldapsrv_call *call)
291 struct ldap_ModifyRequest *req = &call->request.r.ModifyRequest;
292 struct ldapsrv_partition *part;
294 DEBUG(10, ("ModifyRequest"));
295 DEBUGADD(10, (" dn: %s", req->dn));
297 part = ldapsrv_get_partition(call->conn, req->dn);
299 if (!part->ops->Modify) {
300 ldapsrv_unwilling(call, 2);
304 part->ops->Modify(part, call, req);
307 static void ldapsrv_AddRequest(struct ldapsrv_call *call)
309 struct ldap_AddRequest *req = &call->request.r.AddRequest;
310 struct ldapsrv_partition *part;
312 DEBUG(10, ("AddRequest"));
313 DEBUGADD(10, (" dn: %s", req->dn));
315 part = ldapsrv_get_partition(call->conn, req->dn);
317 if (!part->ops->Add) {
318 ldapsrv_unwilling(call, 2);
322 part->ops->Add(part, call, req);
325 static void ldapsrv_DelRequest(struct ldapsrv_call *call)
327 struct ldap_DelRequest *req = &call->request.r.DelRequest;
328 struct ldapsrv_partition *part;
330 DEBUG(10, ("DelRequest"));
331 DEBUGADD(10, (" dn: %s", req->dn));
333 part = ldapsrv_get_partition(call->conn, req->dn);
335 if (!part->ops->Del) {
336 ldapsrv_unwilling(call, 2);
340 part->ops->Del(part, call, req);
343 static void ldapsrv_ModifyDNRequest(struct ldapsrv_call *call)
345 struct ldap_ModifyDNRequest *req = &call->request.r.ModifyDNRequest;
346 struct ldapsrv_partition *part;
348 DEBUG(10, ("ModifyDNRequrest"));
349 DEBUGADD(10, (" dn: %s", req->dn));
350 DEBUGADD(10, (" newrdn: %s", req->newrdn));
352 part = ldapsrv_get_partition(call->conn, req->dn);
354 if (!part->ops->ModifyDN) {
355 ldapsrv_unwilling(call, 2);
359 part->ops->ModifyDN(part, call, req);
362 static void ldapsrv_CompareRequest(struct ldapsrv_call *call)
364 struct ldap_CompareRequest *req = &call->request.r.CompareRequest;
365 struct ldapsrv_partition *part;
367 DEBUG(10, ("CompareRequest"));
368 DEBUGADD(10, (" dn: %s", req->dn));
370 part = ldapsrv_get_partition(call->conn, req->dn);
372 if (!part->ops->Compare) {
373 ldapsrv_unwilling(call, 2);
377 part->ops->Compare(part, call, req);
380 static void ldapsrv_AbandonRequest(struct ldapsrv_call *call)
382 /* struct ldap_AbandonRequest *req = &call->request.r.AbandonRequest;*/
383 DEBUG(10, ("AbandonRequest\n"));
386 static void ldapsrv_ExtendedRequest(struct ldapsrv_call *call)
388 /* struct ldap_ExtendedRequest *req = &call->request.r.ExtendedRequest;*/
389 struct ldapsrv_reply *reply;
391 DEBUG(10, ("Extended\n"));
393 reply = ldapsrv_init_reply(call, LDAP_TAG_ExtendedResponse);
395 ldapsrv_terminate_connection(call->conn, "ldapsrv_init_reply() failed");
399 ZERO_STRUCT(reply->msg.r);
401 ldapsrv_queue_reply(call, reply);
404 static void ldapsrv_do_call(struct ldapsrv_call *call)
406 switch(call->request.type) {
407 case LDAP_TAG_BindRequest:
408 ldapsrv_BindRequest(call);
410 case LDAP_TAG_UnbindRequest:
411 ldapsrv_UnbindRequest(call);
413 case LDAP_TAG_SearchRequest:
414 ldapsrv_SearchRequest(call);
416 case LDAP_TAG_ModifyRequest:
417 ldapsrv_ModifyRequest(call);
419 case LDAP_TAG_AddRequest:
420 ldapsrv_AddRequest(call);
422 case LDAP_TAG_DelRequest:
423 ldapsrv_DelRequest(call);
425 case LDAP_TAG_ModifyDNRequest:
426 ldapsrv_ModifyDNRequest(call);
428 case LDAP_TAG_CompareRequest:
429 ldapsrv_CompareRequest(call);
431 case LDAP_TAG_AbandonRequest:
432 ldapsrv_AbandonRequest(call);
434 case LDAP_TAG_ExtendedRequest:
435 ldapsrv_ExtendedRequest(call);
438 ldapsrv_unwilling(call, 2);
443 static void ldapsrv_do_responses(struct ldapsrv_connection *conn)
445 struct ldapsrv_call *call, *next_call = NULL;
446 struct ldapsrv_reply *reply, *next_reply = NULL;
448 for (call=conn->calls; call; call=next_call) {
449 for (reply=call->replies; reply; reply=next_reply) {
450 if (!ldap_append_to_buf(&reply->msg, &conn->out_buffer)) {
451 ldapsrv_terminate_connection(conn, "append_to_buf() failed");
454 next_reply = reply->next;
455 DLIST_REMOVE(call->replies, reply);
456 reply->state = LDAPSRV_REPLY_STATE_SEND;
459 next_call = call->next;
460 DLIST_REMOVE(conn->calls, call);
461 call->state = LDAPSRV_CALL_STATE_COMPLETE;
467 called when a LDAP socket becomes readable
469 static void ldapsrv_recv(struct server_connection *conn, time_t t,
472 struct ldapsrv_connection *ldap_conn = conn->private_data;
474 int buf_length, msg_length;
477 struct ldapsrv_call *call;
479 DEBUG(10,("ldapsrv_recv\n"));
481 if (!read_into_buf(conn->socket, &ldap_conn->in_buffer)) {
482 ldapsrv_terminate_connection(ldap_conn, "read_into_buf() failed");
486 peek_into_read_buf(&ldap_conn->in_buffer, &buf, &buf_length);
488 while (buf_length > 0) {
490 peek_into_read_buf(&ldap_conn->in_buffer, &buf, &buf_length);
491 /* LDAP Messages are always SEQUENCES */
493 if (!asn1_object_length(buf, buf_length, ASN1_SEQUENCE(0),
495 ldapsrv_terminate_connection(ldap_conn, "asn1_object_length() failed");
499 if (buf_length < msg_length) {
504 /* We've got a complete LDAP request in the in-buffer, convert
505 * that to a ldap_message and put it into the incoming
509 blob.length = msg_length;
511 if (!asn1_load(&data, blob)) {
512 ldapsrv_terminate_connection(ldap_conn, "asn1_load() failed");
516 call = talloc_p(ldap_conn, struct ldapsrv_call);
518 ldapsrv_terminate_connection(ldap_conn, "no memory");
523 call->state = LDAPSRV_CALL_STATE_NEW;
524 call->conn = ldap_conn;
525 call->request.mem_ctx = call;
527 if (!ldap_decode(&data, &call->request)) {
528 dump_data(0,buf, msg_length);
529 ldapsrv_terminate_connection(ldap_conn, "ldap_decode() failed");
533 DLIST_ADD_END(ldap_conn->calls, call,
534 struct ldapsrv_call *);
536 consumed_from_buf(&ldap_conn->in_buffer, msg_length);
538 ldapsrv_do_call(call);
540 peek_into_read_buf(&ldap_conn->in_buffer, &buf, &buf_length);
543 ldapsrv_do_responses(ldap_conn);
545 if (ldap_conn->out_buffer.length > 0) {
546 conn->event.fde->flags |= EVENT_FD_WRITE;
553 called when a LDAP socket becomes writable
555 static void ldapsrv_send(struct server_connection *conn, time_t t,
558 struct ldapsrv_connection *ldap_conn = conn->private_data;
560 DEBUG(10,("ldapsrv_send\n"));
562 if (!write_from_buf(conn->socket, &ldap_conn->out_buffer)) {
563 ldapsrv_terminate_connection(ldap_conn, "write_from_buf() failed");
567 if (ldap_conn->out_buffer.length == 0) {
568 conn->event.fde->flags &= ~EVENT_FD_WRITE;
575 called when connection is idle
577 static void ldapsrv_idle(struct server_connection *conn, time_t t)
579 DEBUG(10,("ldapsrv_idle: not implemented!\n"));
583 static void ldapsrv_close(struct server_connection *conn, const char *reason)
585 struct ldapsrv_connection *ldap_conn = conn->private_data;
587 talloc_free(ldap_conn);
593 initialise a server_context from a open socket and register a event handler
594 for reading from that socket
596 static void ldapsrv_accept(struct server_connection *conn)
598 struct ldapsrv_connection *ldap_conn;
600 DEBUG(5, ("ldapsrv_accept\n"));
602 ldap_conn = talloc_p(NULL, struct ldapsrv_connection);
604 if (ldap_conn == NULL)
607 ZERO_STRUCTP(ldap_conn);
608 ldap_conn->connection = conn;
610 conn->private_data = ldap_conn;
616 called on a fatal error that should cause this server to terminate
618 static void ldapsrv_exit(struct server_service *service, const char *reason)
620 DEBUG(1,("ldapsrv_exit\n"));
624 static const struct server_service_ops ldap_server_ops = {
626 .service_init = ldapsrv_init,
627 .accept_connection = ldapsrv_accept,
628 .recv_handler = ldapsrv_recv,
629 .send_handler = ldapsrv_send,
630 .idle_handler = ldapsrv_idle,
631 .close_connection = ldapsrv_close,
632 .service_exit = ldapsrv_exit,
635 const struct server_service_ops *ldapsrv_get_ops(void)
637 return &ldap_server_ops;
640 NTSTATUS server_service_ldap_init(void)