2 Unix SMB/CIFS implementation.
4 Copyright (C) Rafal Szczesniak 2005
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/>.
21 a composite function for name resolving
25 #include "lib/events/events.h"
26 #include "libnet/libnet.h"
27 #include "libcli/composite/composite.h"
28 #include "auth/credentials/credentials.h"
29 #include "lib/messaging/messaging.h"
30 #include "lib/messaging/irpc.h"
31 #include "libcli/resolve/resolve.h"
32 #include "libcli/libcli.h"
33 #include "libcli/finddc.h"
34 #include "libcli/security/security.h"
35 #include "librpc/gen_ndr/lsa.h"
36 #include "librpc/gen_ndr/ndr_lsa_c.h"
38 #include "param/param.h"
41 struct nbt_name hostname;
46 static void continue_name_resolved(struct composite_context *ctx);
50 * Sends asynchronous Lookup request
52 * @param io arguments and result of the call
55 struct composite_context *libnet_Lookup_send(struct libnet_context *ctx,
56 struct libnet_Lookup *io)
58 struct composite_context *c;
59 struct lookup_state *s;
60 struct composite_context *cresolve_req;
61 struct resolve_context *resolve_ctx;
63 /* allocate context and state structures */
64 c = composite_create(ctx, ctx->event_ctx);
65 if (c == NULL) return NULL;
67 s = talloc_zero(c, struct lookup_state);
68 if (composite_nomem(s, c)) return c;
72 if (io == NULL || io->in.hostname == NULL) {
73 composite_error(c, NT_STATUS_INVALID_PARAMETER);
78 s->hostname.name = talloc_strdup(s, io->in.hostname);
79 if (composite_nomem(s->hostname.name, c)) return c;
81 s->hostname.type = io->in.type;
82 s->hostname.scope = NULL;
84 /* name resolution methods */
85 if (io->in.resolve_ctx) {
86 resolve_ctx = io->in.resolve_ctx;
88 resolve_ctx = ctx->resolve_ctx;
91 /* send resolve request */
92 cresolve_req = resolve_name_send(resolve_ctx, s, &s->hostname, c->event_ctx);
93 if (composite_nomem(cresolve_req, c)) return c;
95 composite_continue(c, cresolve_req, continue_name_resolved, c);
100 static void continue_name_resolved(struct composite_context *ctx)
102 struct composite_context *c;
103 struct lookup_state *s;
105 c = talloc_get_type(ctx->async.private_data, struct composite_context);
106 s = talloc_get_type(c->private_data, struct lookup_state);
108 c->status = resolve_name_recv(ctx, s, &s->address);
115 * Waits for and receives results of asynchronous Lookup call
117 * @param c composite context returned by asynchronous Lookup call
118 * @param mem_ctx memory context of the call
119 * @param io pointer to results (and arguments) of the call
120 * @return nt status code of execution
123 NTSTATUS libnet_Lookup_recv(struct composite_context *c, TALLOC_CTX *mem_ctx,
124 struct libnet_Lookup *io)
127 struct lookup_state *s;
129 status = composite_wait(c);
130 if (NT_STATUS_IS_OK(status)) {
131 s = talloc_get_type(c->private_data, struct lookup_state);
133 io->out.address = (const char **)str_list_make_single(mem_ctx, s->address);
134 NT_STATUS_HAVE_NO_MEMORY(io->out.address);
143 * Synchronous version of Lookup call
145 * @param mem_ctx memory context for the call
146 * @param io arguments and results of the call
147 * @return nt status code of execution
150 NTSTATUS libnet_Lookup(struct libnet_context *ctx, TALLOC_CTX *mem_ctx,
151 struct libnet_Lookup *io)
153 struct composite_context *c = libnet_Lookup_send(ctx, io);
154 return libnet_Lookup_recv(c, mem_ctx, io);
159 * Shortcut functions to find common types of name
160 * (and skip nbt name type argument)
165 * Sends asynchronous LookupHost request
167 struct composite_context* libnet_LookupHost_send(struct libnet_context *ctx,
168 struct libnet_Lookup *io)
170 io->in.type = NBT_NAME_SERVER;
171 return libnet_Lookup_send(ctx, io);
177 * Synchronous version of LookupHost call
179 NTSTATUS libnet_LookupHost(struct libnet_context *ctx, TALLOC_CTX *mem_ctx,
180 struct libnet_Lookup *io)
182 struct composite_context *c = libnet_LookupHost_send(ctx, io);
183 return libnet_Lookup_recv(c, mem_ctx, io);
188 * Sends asynchronous LookupDCs request
190 struct tevent_req *libnet_LookupDCs_send(struct libnet_context *ctx,
192 struct libnet_LookupDCs *io)
194 struct tevent_req *req;
195 struct finddcs finddcs_io;
197 ZERO_STRUCT(finddcs_io);
198 finddcs_io.in.domain_name = lpcfg_realm(ctx->lp_ctx);
199 if (strcmp(finddcs_io.in.domain_name, "") == 0) {
200 finddcs_io.in.domain_name = lpcfg_workgroup(ctx->lp_ctx);
202 finddcs_io.in.minimum_dc_flags = NBT_SERVER_LDAP | NBT_SERVER_DS | NBT_SERVER_WRITABLE;
205 req = finddcs_cldap_send(mem_ctx, &finddcs_io, ctx->resolve_ctx, ctx->event_ctx);
210 * Waits for and receives results of asynchronous Lookup call
212 * @param c composite context returned by asynchronous Lookup call
213 * @param mem_ctx memory context of the call
214 * @param io pointer to results (and arguments) of the call
215 * @return nt status code of execution
218 NTSTATUS libnet_LookupDCs_recv(struct tevent_req *req, TALLOC_CTX *mem_ctx,
219 struct libnet_LookupDCs *io)
222 struct finddcs finddcs_io;
223 status = finddcs_cldap_recv(req, mem_ctx, &finddcs_io);
226 io->out.dcs = talloc(mem_ctx, struct nbt_dc_name);
227 NT_STATUS_HAVE_NO_MEMORY(io->out.dcs);
228 io->out.dcs[0].address = finddcs_io.out.address;
229 io->out.dcs[0].name = finddcs_io.out.netlogon.data.nt5_ex.pdc_dns_name;
235 * Synchronous version of LookupDCs
237 NTSTATUS libnet_LookupDCs(struct libnet_context *ctx, TALLOC_CTX *mem_ctx,
238 struct libnet_LookupDCs *io)
240 struct tevent_req *req = libnet_LookupDCs_send(ctx, mem_ctx, io);
241 return libnet_LookupDCs_recv(req, mem_ctx, io);
245 struct lookup_name_state {
246 struct libnet_context *ctx;
249 struct libnet_DomainOpen domopen;
250 struct lsa_LookupNames lookup;
251 struct lsa_TransSidArray sids;
252 struct lsa_String *names;
254 /* information about the progress */
255 void (*monitor_fn)(struct monitor_msg *);
259 static bool prepare_lookup_params(struct libnet_context *ctx,
260 struct composite_context *c,
261 struct lookup_name_state *s);
262 static void continue_lookup_name(struct composite_context *ctx);
263 static void continue_name_found(struct tevent_req *subreq);
266 struct composite_context* libnet_LookupName_send(struct libnet_context *ctx,
268 struct libnet_LookupName *io,
269 void (*monitor)(struct monitor_msg*))
271 struct composite_context *c;
272 struct lookup_name_state *s;
273 struct tevent_req *subreq;
274 bool prereq_met = false;
276 c = composite_create(mem_ctx, ctx->event_ctx);
277 if (c == NULL) return NULL;
279 s = talloc_zero(c, struct lookup_name_state);
280 if (composite_nomem(s, c)) return c;
284 s->name = talloc_strdup(c, io->in.name);
285 s->monitor_fn = monitor;
288 prereq_met = lsa_domain_opened(ctx, io->in.domain_name, &c, &s->domopen,
289 continue_lookup_name, monitor);
290 if (!prereq_met) return c;
292 if (!prepare_lookup_params(ctx, c, s)) return c;
294 subreq = dcerpc_lsa_LookupNames_r_send(s, c->event_ctx,
295 ctx->lsa.pipe->binding_handle,
297 if (composite_nomem(subreq, c)) return c;
299 tevent_req_set_callback(subreq, continue_name_found, c);
304 static bool prepare_lookup_params(struct libnet_context *ctx,
305 struct composite_context *c,
306 struct lookup_name_state *s)
308 const int single_name = 1;
313 s->names = talloc_array(ctx, struct lsa_String, single_name);
314 if (composite_nomem(s->names, c)) return false;
315 s->names[0].string = s->name;
317 s->lookup.in.handle = &ctx->lsa.handle;
318 s->lookup.in.num_names = single_name;
319 s->lookup.in.names = s->names;
320 s->lookup.in.sids = &s->sids;
321 s->lookup.in.level = 1;
322 s->lookup.in.count = &s->count;
323 s->lookup.out.count = &s->count;
324 s->lookup.out.sids = &s->sids;
325 s->lookup.out.domains = talloc_zero(ctx, struct lsa_RefDomainList *);
326 if (composite_nomem(s->lookup.out.domains, c)) return false;
332 static void continue_lookup_name(struct composite_context *ctx)
334 struct composite_context *c;
335 struct lookup_name_state *s;
336 struct tevent_req *subreq;
338 c = talloc_get_type(ctx->async.private_data, struct composite_context);
339 s = talloc_get_type(c->private_data, struct lookup_name_state);
341 c->status = libnet_DomainOpen_recv(ctx, s->ctx, c, &s->domopen);
342 if (!composite_is_ok(c)) return;
344 if (!prepare_lookup_params(s->ctx, c, s)) return;
346 subreq = dcerpc_lsa_LookupNames_r_send(s, c->event_ctx,
347 s->ctx->lsa.pipe->binding_handle,
349 if (composite_nomem(subreq, c)) return;
351 tevent_req_set_callback(subreq, continue_name_found, c);
355 static void continue_name_found(struct tevent_req *subreq)
357 struct composite_context *c;
358 struct lookup_name_state *s;
360 c = tevent_req_callback_data(subreq, struct composite_context);
361 s = talloc_get_type(c->private_data, struct lookup_name_state);
363 c->status = dcerpc_lsa_LookupNames_r_recv(subreq, s);
365 if (!composite_is_ok(c)) return;
367 c->status = s->lookup.out.result;
368 if (!composite_is_ok(c)) return;
374 NTSTATUS libnet_LookupName_recv(struct composite_context *c, TALLOC_CTX *mem_ctx,
375 struct libnet_LookupName *io)
378 struct lookup_name_state *s;
380 status = composite_wait(c);
382 if (NT_STATUS_IS_OK(status)) {
383 s = talloc_get_type(c->private_data, struct lookup_name_state);
387 io->out.sidstr = NULL;
389 if (*s->lookup.out.count > 0) {
390 struct lsa_RefDomainList *domains = *s->lookup.out.domains;
391 struct lsa_TransSidArray *sids = s->lookup.out.sids;
393 if (domains == NULL || sids == NULL) {
394 status = NT_STATUS_UNSUCCESSFUL;
395 io->out.error_string = talloc_asprintf(mem_ctx, "Error: %s", nt_errstr(status));
399 if (sids->count > 0) {
400 io->out.rid = sids->sids[0].rid;
401 io->out.sid_type = sids->sids[0].sid_type;
402 if (domains->count > 0) {
403 io->out.sid = dom_sid_add_rid(mem_ctx, domains->domains[0].sid, io->out.rid);
404 NT_STATUS_HAVE_NO_MEMORY(io->out.sid);
405 io->out.sidstr = dom_sid_string(mem_ctx, io->out.sid);
406 NT_STATUS_HAVE_NO_MEMORY(io->out.sidstr);
411 io->out.error_string = talloc_strdup(mem_ctx, "Success");
413 } else if (!NT_STATUS_IS_OK(status)) {
414 io->out.error_string = talloc_asprintf(mem_ctx, "Error: %s", nt_errstr(status));
423 NTSTATUS libnet_LookupName(struct libnet_context *ctx, TALLOC_CTX *mem_ctx,
424 struct libnet_LookupName *io)
426 struct composite_context *c;
428 c = libnet_LookupName_send(ctx, mem_ctx, io, NULL);
429 return libnet_LookupName_recv(c, mem_ctx, io);