2 Unix SMB/CIFS implementation.
4 Async helpers for blocking functions
6 Copyright (C) Volker Lendecke 2005
7 Copyright (C) Gerald Carter 2006
9 The helpers always consist of three functions:
11 * A request setup function that takes the necessary parameters together
12 with a continuation function that is to be called upon completion
14 * A private continuation function that is internal only. This is to be
15 called by the lower-level functions in do_async(). Its only task is to
16 properly call the continuation function named above.
18 * A worker function that is called inside the appropriate child process.
20 This program is free software; you can redistribute it and/or modify
21 it under the terms of the GNU General Public License as published by
22 the Free Software Foundation; either version 3 of the License, or
23 (at your option) any later version.
25 This program is distributed in the hope that it will be useful,
26 but WITHOUT ANY WARRANTY; without even the implied warranty of
27 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
28 GNU General Public License for more details.
30 You should have received a copy of the GNU General Public License
31 along with this program. If not, see <http://www.gnu.org/licenses/>.
38 #define DBGC_CLASS DBGC_WINBIND
40 struct do_async_state {
42 struct winbindd_request request;
43 struct winbindd_response response;
44 void (*cont)(TALLOC_CTX *mem_ctx,
46 struct winbindd_response *response,
47 void *c, void *private_data);
48 void *c, *private_data;
51 static void do_async_recv(void *private_data, bool success)
53 struct do_async_state *state =
54 talloc_get_type_abort(private_data, struct do_async_state);
56 state->cont(state->mem_ctx, success, &state->response,
57 state->c, state->private_data);
60 void do_async(TALLOC_CTX *mem_ctx, struct winbindd_child *child,
61 const struct winbindd_request *request,
62 void (*cont)(TALLOC_CTX *mem_ctx, bool success,
63 struct winbindd_response *response,
64 void *c, void *private_data),
65 void *c, void *private_data)
67 struct do_async_state *state;
69 state = TALLOC_ZERO_P(mem_ctx, struct do_async_state);
71 DEBUG(0, ("talloc failed\n"));
72 cont(mem_ctx, False, NULL, c, private_data);
76 state->mem_ctx = mem_ctx;
77 state->request = *request;
78 state->request.length = sizeof(state->request);
81 state->private_data = private_data;
83 async_request(mem_ctx, child, &state->request,
84 &state->response, do_async_recv, state);
87 static void do_async_domain(TALLOC_CTX *mem_ctx, struct winbindd_domain *domain,
88 const struct winbindd_request *request,
89 void (*cont)(TALLOC_CTX *mem_ctx, bool success,
90 struct winbindd_response *response,
91 void *c, void *private_data),
92 void *c, void *private_data)
94 struct do_async_state *state;
96 state = TALLOC_ZERO_P(mem_ctx, struct do_async_state);
98 DEBUG(0, ("talloc failed\n"));
99 cont(mem_ctx, False, NULL, c, private_data);
103 state->mem_ctx = mem_ctx;
104 state->request = *request;
105 state->request.length = sizeof(state->request);
108 state->private_data = private_data;
110 async_domain_request(mem_ctx, domain, &state->request,
111 &state->response, do_async_recv, state);
114 enum winbindd_result winbindd_dual_lookupsid(struct winbindd_domain *domain,
115 struct winbindd_cli_state *state)
117 enum lsa_SidType type;
122 /* Ensure null termination */
123 state->request->data.sid[sizeof(state->request->data.sid)-1]='\0';
125 DEBUG(3, ("[%5lu]: lookupsid %s\n", (unsigned long)state->pid,
126 state->request->data.sid));
128 /* Lookup sid from PDC using lsa_lookup_sids() */
130 if (!string_to_sid(&sid, state->request->data.sid)) {
131 DEBUG(5, ("%s not a SID\n", state->request->data.sid));
132 return WINBINDD_ERROR;
137 if (!winbindd_lookup_name_by_sid(state->mem_ctx, domain, &sid,
138 &dom_name, &name, &type))
140 TALLOC_FREE(dom_name);
142 return WINBINDD_ERROR;
145 fstrcpy(state->response->data.name.dom_name, dom_name);
146 fstrcpy(state->response->data.name.name, name);
147 state->response->data.name.type = type;
149 TALLOC_FREE(dom_name);
154 /********************************************************************
155 This is the second callback after contacting the forest root
156 ********************************************************************/
158 struct lookupname_state {
161 void *caller_private_data;
165 static void lookupname_recv2(TALLOC_CTX *mem_ctx, bool success,
166 struct winbindd_response *response,
167 void *c, void *private_data)
169 void (*cont)(void *priv, bool succ, const DOM_SID *sid,
170 enum lsa_SidType type) =
171 (void (*)(void *, bool, const DOM_SID *, enum lsa_SidType))c;
173 struct lookupname_state *s = talloc_get_type_abort( private_data,
174 struct lookupname_state );
177 DEBUG(5, ("Could not trigger lookup_name\n"));
178 cont(s->caller_private_data, False, NULL, SID_NAME_UNKNOWN);
182 if (response->result != WINBINDD_OK) {
183 DEBUG(5, ("lookup_name returned an error\n"));
184 cont(s->caller_private_data, False, NULL, SID_NAME_UNKNOWN);
188 if (!string_to_sid(&sid, response->data.sid.sid)) {
189 DEBUG(0, ("Could not convert string %s to sid\n",
190 response->data.sid.sid));
191 cont(s->caller_private_data, False, NULL, SID_NAME_UNKNOWN);
195 cont(s->caller_private_data, True, &sid,
196 (enum lsa_SidType)response->data.sid.type);
199 /********************************************************************
200 This is the first callback after contacting our own domain
201 ********************************************************************/
203 static void lookupname_recv(TALLOC_CTX *mem_ctx, bool success,
204 struct winbindd_response *response,
205 void *c, void *private_data)
207 void (*cont)(void *priv, bool succ, const DOM_SID *sid,
208 enum lsa_SidType type) =
209 (void (*)(void *, bool, const DOM_SID *, enum lsa_SidType))c;
211 struct lookupname_state *s = talloc_get_type_abort( private_data,
212 struct lookupname_state );
215 DEBUG(5, ("lookupname_recv: lookup_name() failed!\n"));
216 cont(s->caller_private_data, False, NULL, SID_NAME_UNKNOWN);
220 if (response->result != WINBINDD_OK) {
221 /* Try again using the forest root */
222 struct winbindd_domain *root_domain = find_root_domain();
223 struct winbindd_request request;
225 if ( !root_domain ) {
226 DEBUG(5,("lookupname_recv: unable to determine forest root\n"));
227 cont(s->caller_private_data, False, NULL, SID_NAME_UNKNOWN);
231 ZERO_STRUCT(request);
232 request.cmd = WINBINDD_LOOKUPNAME;
234 fstrcpy( request.data.name.dom_name, s->dom_name );
235 fstrcpy( request.data.name.name, s->name );
237 do_async_domain(mem_ctx, root_domain, &request, lookupname_recv2,
243 if (!string_to_sid(&sid, response->data.sid.sid)) {
244 DEBUG(0, ("Could not convert string %s to sid\n",
245 response->data.sid.sid));
246 cont(s->caller_private_data, False, NULL, SID_NAME_UNKNOWN);
250 cont(s->caller_private_data, True, &sid,
251 (enum lsa_SidType)response->data.sid.type);
254 /********************************************************************
255 The lookup name call first contacts a DC in its own domain
256 and fallbacks to contact a DC if the forest in our domain doesn't
258 ********************************************************************/
260 void winbindd_lookupname_async(TALLOC_CTX *mem_ctx,
261 const char *dom_name, const char *name,
262 void (*cont)(void *private_data, bool success,
264 enum lsa_SidType type),
265 enum winbindd_cmd orig_cmd,
268 struct winbindd_request request;
269 struct winbindd_domain *domain;
270 struct lookupname_state *s;
272 domain = find_lookup_domain_from_name(dom_name);
273 if (domain == NULL) {
274 DEBUG(5, ("Could not find domain for name '%s'\n", dom_name));
275 cont(private_data, False, NULL, SID_NAME_UNKNOWN);
279 ZERO_STRUCT(request);
280 request.cmd = WINBINDD_LOOKUPNAME;
281 request.original_cmd = orig_cmd;
282 fstrcpy(request.data.name.dom_name, dom_name);
283 fstrcpy(request.data.name.name, name);
285 if ( (s = TALLOC_ZERO_P(mem_ctx, struct lookupname_state)) == NULL ) {
286 DEBUG(0, ("winbindd_lookupname_async: talloc failed\n"));
287 cont(private_data, False, NULL, SID_NAME_UNKNOWN);
291 s->dom_name = talloc_strdup( s, dom_name );
292 s->name = talloc_strdup( s, name );
293 if (!s->dom_name || !s->name) {
294 cont(private_data, False, NULL, SID_NAME_UNKNOWN);
298 s->caller_private_data = private_data;
300 do_async_domain(mem_ctx, domain, &request, lookupname_recv,
304 enum winbindd_result winbindd_dual_lookupname(struct winbindd_domain *domain,
305 struct winbindd_cli_state *state)
307 enum lsa_SidType type;
308 char *name_domain, *name_user;
312 /* Ensure null termination */
313 state->request->data.name.dom_name[sizeof(state->request->data.name.dom_name)-1]='\0';
315 /* Ensure null termination */
316 state->request->data.name.name[sizeof(state->request->data.name.name)-1]='\0';
318 /* cope with the name being a fully qualified name */
319 p = strstr(state->request->data.name.name, lp_winbind_separator());
322 name_domain = state->request->data.name.name;
325 name_domain = state->request->data.name.dom_name;
326 name_user = state->request->data.name.name;
329 DEBUG(3, ("[%5lu]: lookupname %s%s%s\n", (unsigned long)state->pid,
330 name_domain, lp_winbind_separator(), name_user));
332 /* Lookup name from DC using lsa_lookup_names() */
333 if (!winbindd_lookup_sid_by_name(state->mem_ctx, state->request->original_cmd, domain, name_domain,
334 name_user, &sid, &type)) {
335 return WINBINDD_ERROR;
338 sid_to_fstring(state->response->data.sid.sid, &sid);
339 state->response->data.sid.type = type;
344 bool print_sidlist(TALLOC_CTX *mem_ctx, const DOM_SID *sids,
345 size_t num_sids, char **result, ssize_t *len)
352 for (i=0; i<num_sids; i++) {
354 sprintf_append(mem_ctx, result, len, &buflen,
355 "%s\n", sid_to_fstring(tmp, &sids[i]));
358 if ((num_sids != 0) && (*result == NULL)) {
365 bool parse_sidlist(TALLOC_CTX *mem_ctx, const char *sidstr,
366 DOM_SID **sids, size_t *num_sids)
374 while (p[0] != '\0') {
380 DEBUG(0, ("Got invalid sidstr: %s\n", p));
383 sidlen = PTR_DIFF(q, p);
384 if (sidlen >= sizeof(tmp)-1) {
387 memcpy(tmp, p, sidlen);
390 if (!string_to_sid(&sid, tmp)) {
391 DEBUG(0, ("Could not parse sid %s\n", p));
394 if (!NT_STATUS_IS_OK(add_sid_to_array(mem_ctx, &sid, sids,
404 static void getsidaliases_recv(TALLOC_CTX *mem_ctx, bool success,
405 struct winbindd_response *response,
406 void *c, void *private_data)
408 void (*cont)(void *priv, bool succ,
409 DOM_SID *aliases, size_t num_aliases) =
410 (void (*)(void *, bool, DOM_SID *, size_t))c;
412 DOM_SID *sids = NULL;
416 DEBUG(5, ("Could not trigger getsidaliases\n"));
417 cont(private_data, success, NULL, 0);
421 if (response->result != WINBINDD_OK) {
422 DEBUG(5, ("getsidaliases returned an error\n"));
423 cont(private_data, False, NULL, 0);
427 aliases_str = (char *)response->extra_data.data;
429 if (aliases_str == NULL) {
430 DEBUG(10, ("getsidaliases return 0 SIDs\n"));
431 cont(private_data, True, NULL, 0);
435 if (!parse_sidlist(mem_ctx, aliases_str, &sids, &num_sids)) {
436 DEBUG(0, ("Could not parse sids\n"));
437 cont(private_data, False, NULL, 0);
441 cont(private_data, True, sids, num_sids);
444 void winbindd_getsidaliases_async(struct winbindd_domain *domain,
446 const DOM_SID *sids, size_t num_sids,
447 void (*cont)(void *private_data,
449 const DOM_SID *aliases,
453 struct winbindd_request request;
458 cont(private_data, True, NULL, 0);
462 if (!print_sidlist(mem_ctx, sids, num_sids, &sidstr, &len)) {
463 cont(private_data, False, NULL, 0);
467 ZERO_STRUCT(request);
468 request.cmd = WINBINDD_DUAL_GETSIDALIASES;
469 request.extra_len = len;
470 request.extra_data.data = sidstr;
472 do_async_domain(mem_ctx, domain, &request, getsidaliases_recv,
473 (void *)cont, private_data);
476 static void query_user_recv(TALLOC_CTX *mem_ctx, bool success,
477 struct winbindd_response *response,
478 void *c, void *private_data)
480 void (*cont)(void *priv, bool succ, const char *acct_name,
481 const char *full_name, const char *homedir,
482 const char *shell, uint32 gid, uint32 group_rid) =
483 (void (*)(void *, bool, const char *, const char *,
484 const char *, const char *, uint32, uint32))c;
487 DEBUG(5, ("Could not trigger query_user\n"));
488 cont(private_data, False, NULL, NULL, NULL, NULL, -1, -1);
492 if (response->result != WINBINDD_OK) {
493 DEBUG(5, ("query_user returned an error\n"));
494 cont(private_data, False, NULL, NULL, NULL, NULL, -1, -1);
498 cont(private_data, True, response->data.user_info.acct_name,
499 response->data.user_info.full_name,
500 response->data.user_info.homedir,
501 response->data.user_info.shell,
502 response->data.user_info.primary_gid,
503 response->data.user_info.group_rid);
506 void query_user_async(TALLOC_CTX *mem_ctx, struct winbindd_domain *domain,
508 void (*cont)(void *private_data, bool success,
509 const char *acct_name,
510 const char *full_name,
517 struct winbindd_request request;
518 ZERO_STRUCT(request);
519 request.cmd = WINBINDD_DUAL_USERINFO;
520 sid_to_fstring(request.data.sid, sid);
521 do_async_domain(mem_ctx, domain, &request, query_user_recv,
522 (void *)cont, private_data);
525 enum winbindd_result winbindd_dual_ping(struct winbindd_domain *domain,
526 struct winbindd_cli_state *state)