summaryrefslogtreecommitdiff
path: root/source3/winbindd/wb_gettoken.c
blob: 2f4cec811cfd282c0fc1fe2da446ecdc9f0e71f0 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
/*
   Unix SMB/CIFS implementation.
   async gettoken
   Copyright (C) Volker Lendecke 2009

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

#include "includes.h"
#include "winbindd.h"
#include "librpc/gen_ndr/ndr_wbint_c.h"
#include "../libcli/security/security.h"

struct wb_gettoken_state {
	struct tevent_context *ev;
	struct dom_sid usersid;
	int num_sids;
	struct dom_sid *sids;
};

static bool wb_add_rids_to_sids(TALLOC_CTX *mem_ctx,
				int *pnum_sids, struct dom_sid **psids,
				const struct dom_sid *domain_sid,
				int num_rids, uint32_t *rids);

static void wb_gettoken_gotgroups(struct tevent_req *subreq);
static void wb_gettoken_gotlocalgroups(struct tevent_req *subreq);
static void wb_gettoken_gotbuiltins(struct tevent_req *subreq);

struct tevent_req *wb_gettoken_send(TALLOC_CTX *mem_ctx,
				    struct tevent_context *ev,
				    const struct dom_sid *sid)
{
	struct tevent_req *req, *subreq;
	struct wb_gettoken_state *state;
	struct winbindd_domain *domain;

	req = tevent_req_create(mem_ctx, &state, struct wb_gettoken_state);
	if (req == NULL) {
		return NULL;
	}
	sid_copy(&state->usersid, sid);
	state->ev = ev;

	domain = find_domain_from_sid_noinit(sid);
	if (domain == NULL) {
		DEBUG(5, ("Could not find domain from SID %s\n",
			  sid_string_dbg(sid)));
		tevent_req_nterror(req, NT_STATUS_NO_SUCH_USER);
		return tevent_req_post(req, ev);
	}

	if (lp_winbind_trusted_domains_only() && domain->primary) {
		DEBUG(7, ("wb_gettoken: My domain -- rejecting getgroups() "
			  "for %s.\n", sid_string_tos(sid)));
		tevent_req_nterror(req, NT_STATUS_NO_SUCH_USER);
		return tevent_req_post(req, ev);
	}

	subreq = wb_lookupusergroups_send(state, ev, domain, &state->usersid);
	if (tevent_req_nomem(subreq, req)) {
		return tevent_req_post(req, ev);
	}
	tevent_req_set_callback(subreq, wb_gettoken_gotgroups, req);
	return req;
}

static void wb_gettoken_gotgroups(struct tevent_req *subreq)
{
	struct tevent_req *req = tevent_req_callback_data(
		subreq, struct tevent_req);
	struct wb_gettoken_state *state = tevent_req_data(
		req, struct wb_gettoken_state);
        struct dom_sid *sids;
	struct winbindd_domain *domain;
	NTSTATUS status;

	status = wb_lookupusergroups_recv(subreq, state, &state->num_sids,
					  &state->sids);
	TALLOC_FREE(subreq);
	if (!NT_STATUS_IS_OK(status)) {
		tevent_req_nterror(req, status);
		return;
	}

	sids = talloc_realloc(state, state->sids, struct dom_sid,
			      state->num_sids + 1);
	if (tevent_req_nomem(sids, req)) {
		return;
	}
	memmove(&sids[1], &sids[0], state->num_sids * sizeof(sids[0]));
	sid_copy(&sids[0], &state->usersid);
	state->num_sids += 1;
	state->sids = sids;

	/*
	 * Expand our domain's aliases
	 */
	domain = find_domain_from_sid_noinit(get_global_sam_sid());
	if (domain == NULL) {
		tevent_req_nterror(req, NT_STATUS_INTERNAL_ERROR);
		return;
	}

	subreq = wb_lookupuseraliases_send(state, state->ev, domain,
					   state->num_sids, state->sids);
	if (tevent_req_nomem(subreq, req)) {
		return;
	}
	tevent_req_set_callback(subreq, wb_gettoken_gotlocalgroups, req);
}

static void wb_gettoken_gotlocalgroups(struct tevent_req *subreq)
{
	struct tevent_req *req = tevent_req_callback_data(
		subreq, struct tevent_req);
	struct wb_gettoken_state *state = tevent_req_data(
		req, struct wb_gettoken_state);
	uint32_t num_rids;
	uint32_t *rids;
	struct winbindd_domain *domain;
	NTSTATUS status;

	status = wb_lookupuseraliases_recv(subreq, state, &num_rids, &rids);
	TALLOC_FREE(subreq);
	if (!NT_STATUS_IS_OK(status)) {
		tevent_req_nterror(req, status);
		return;
	}
	domain = find_domain_from_sid_noinit(get_global_sam_sid());
	if (domain == NULL) {
		tevent_req_nterror(req, NT_STATUS_INTERNAL_ERROR);
		return;
	}
	if (!wb_add_rids_to_sids(state, &state->num_sids, &state->sids,
				 &domain->sid, num_rids, rids)) {
		tevent_req_nterror(req, NT_STATUS_NO_MEMORY);
		return;
	}
	TALLOC_FREE(rids);

	/*
	 * Now expand the builtin groups
	 */

	domain = find_builtin_domain();
	if (domain == NULL) {
		tevent_req_nterror(req, NT_STATUS_INTERNAL_ERROR);
		return;
	}

	subreq = wb_lookupuseraliases_send(state, state->ev, domain,
					   state->num_sids, state->sids);
	if (tevent_req_nomem(subreq, req)) {
		return;
	}
	tevent_req_set_callback(subreq, wb_gettoken_gotbuiltins, req);
}

static void wb_gettoken_gotbuiltins(struct tevent_req *subreq)
{
	struct tevent_req *req = tevent_req_callback_data(
		subreq, struct tevent_req);
	struct wb_gettoken_state *state = tevent_req_data(
		req, struct wb_gettoken_state);
	uint32_t num_rids;
        uint32_t *rids;
	NTSTATUS status;

	status = wb_lookupuseraliases_recv(subreq, state, &num_rids, &rids);
	TALLOC_FREE(subreq);
	if (!NT_STATUS_IS_OK(status)) {
		tevent_req_nterror(req, status);
		return;
	}
	if (!wb_add_rids_to_sids(state, &state->num_sids, &state->sids,
				 &global_sid_Builtin, num_rids, rids)) {
		tevent_req_nterror(req, NT_STATUS_NO_MEMORY);
		return;
	}
	tevent_req_done(req);
}

NTSTATUS wb_gettoken_recv(struct tevent_req *req, TALLOC_CTX *mem_ctx,
			  int *num_sids, struct dom_sid **sids)
{
	struct wb_gettoken_state *state = tevent_req_data(
		req, struct wb_gettoken_state);
	NTSTATUS status;

	if (tevent_req_is_nterror(req, &status)) {
		return status;
	}
	*num_sids = state->num_sids;
	*sids = talloc_move(mem_ctx, &state->sids);
	return NT_STATUS_OK;
}

static bool wb_add_rids_to_sids(TALLOC_CTX *mem_ctx,
				int *pnum_sids, struct dom_sid **psids,
				const struct dom_sid *domain_sid,
				int num_rids, uint32_t *rids)
{
	struct dom_sid *sids;
	int i;

	sids = talloc_realloc(mem_ctx, *psids, struct dom_sid,
			      *pnum_sids + num_rids);
	if (sids == NULL) {
		return false;
	}
	for (i=0; i<num_rids; i++) {
		sid_compose(&sids[i+*pnum_sids], domain_sid, rids[i]);
	}

	*pnum_sids += num_rids;
	*psids = sids;
	return true;
}