summaryrefslogtreecommitdiff
path: root/source4/winbind/wb_samba3_protocol.c
blob: 4bb0582cd22749c6fe1fbb54b816988a92f44bb9 (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
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
/* 
   Unix SMB/CIFS implementation.
   Main winbindd samba3 server routines

   Copyright (C) Stefan Metzmacher	2005
   Copyright (C) Volker Lendecke	2005

   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 "winbind/wb_server.h"
#include "smbd/service_stream.h"
#include "lib/stream/packet.h"
#include "lib/tsocket/tsocket.h"

/*
  work out if a packet is complete for protocols that use a 32 bit host byte
  order length
*/
NTSTATUS wbsrv_samba3_packet_full_request(void *private_data, DATA_BLOB blob, size_t *size)
{
	uint32_t *len;
	if (blob.length < 4) {
		return STATUS_MORE_ENTRIES;
	}
	len = (uint32_t *)blob.data;
	*size = (*len);
	if (*size > blob.length) {
		return STATUS_MORE_ENTRIES;
	}
	return NT_STATUS_OK;
}


NTSTATUS wbsrv_samba3_pull_request(struct wbsrv_samba3_call *call)
{
	if (call->in.length != sizeof(*call->request)) {
		DEBUG(0,("wbsrv_samba3_pull_request: invalid blob length %lu should be %lu\n"
			 " make sure you use the correct winbind client tools!\n",
			 (long)call->in.length, (long)sizeof(*call->request)));
		return NT_STATUS_INVALID_PARAMETER;
	}

	call->request = talloc_zero(call, struct winbindd_request);
	NT_STATUS_HAVE_NO_MEMORY(call->request);

	/* the packet layout is the same as the in memory layout of the request, so just copy it */
	memcpy(call->request, call->in.data, sizeof(*call->request));

	return NT_STATUS_OK;
}

NTSTATUS wbsrv_samba3_handle_call(struct wbsrv_samba3_call *s3call)
{
	DEBUG(10, ("Got winbind samba3 request %d\n", s3call->request->cmd));

	s3call->response = talloc_zero(s3call, struct winbindd_response);
	NT_STATUS_HAVE_NO_MEMORY(s3call->request);

	s3call->response->length = sizeof(*s3call->response);

	switch(s3call->request->cmd) {
	case WINBINDD_INTERFACE_VERSION:
		return wbsrv_samba3_interface_version(s3call);

	case WINBINDD_CHECK_MACHACC:
		return wbsrv_samba3_check_machacc(s3call);

	case WINBINDD_PING:
		return wbsrv_samba3_ping(s3call);

	case WINBINDD_INFO:
		return wbsrv_samba3_info(s3call);

	case WINBINDD_DOMAIN_NAME:
		return wbsrv_samba3_domain_name(s3call);

	case WINBINDD_NETBIOS_NAME:
		return wbsrv_samba3_netbios_name(s3call);

	case WINBINDD_PRIV_PIPE_DIR:
		return wbsrv_samba3_priv_pipe_dir(s3call);

	case WINBINDD_LOOKUPNAME:
		return wbsrv_samba3_lookupname(s3call);

	case WINBINDD_LOOKUPSID:
		return wbsrv_samba3_lookupsid(s3call);

	case WINBINDD_PAM_AUTH:
		return wbsrv_samba3_pam_auth(s3call);

	case WINBINDD_PAM_AUTH_CRAP:
		return wbsrv_samba3_pam_auth_crap(s3call);

	case WINBINDD_GETDCNAME:
		return wbsrv_samba3_getdcname(s3call);

	case WINBINDD_GETUSERDOMGROUPS:
		return wbsrv_samba3_userdomgroups(s3call);

	case WINBINDD_GETUSERSIDS:
		return wbsrv_samba3_usersids(s3call);

	case WINBINDD_LIST_GROUPS:
		return wbsrv_samba3_list_groups(s3call);

	case WINBINDD_LIST_TRUSTDOM:
		return wbsrv_samba3_list_trustdom(s3call);

	case WINBINDD_LIST_USERS:
		return wbsrv_samba3_list_users(s3call);

	case WINBINDD_GETPWNAM:
		return wbsrv_samba3_getpwnam(s3call);

	case WINBINDD_GETPWUID:
		return wbsrv_samba3_getpwuid(s3call);

	case WINBINDD_SETPWENT:
		return wbsrv_samba3_setpwent(s3call);

	case WINBINDD_GETPWENT:
		return wbsrv_samba3_getpwent(s3call);

	case WINBINDD_ENDPWENT:
		return wbsrv_samba3_endpwent(s3call);

	case WINBINDD_GETGRNAM:
		return wbsrv_samba3_getgrnam(s3call);

	case WINBINDD_GETGRGID:
		return wbsrv_samba3_getgrgid(s3call);

	case WINBINDD_GETGROUPS:
		return wbsrv_samba3_getgroups(s3call);

	case WINBINDD_SETGRENT:
		return wbsrv_samba3_setgrent(s3call);

	case WINBINDD_GETGRENT:
		return wbsrv_samba3_getgrent(s3call);

	case WINBINDD_ENDGRENT:
		return wbsrv_samba3_endgrent(s3call);

	case WINBINDD_SID_TO_UID:
	case WINBINDD_DUAL_SID2UID:
		return wbsrv_samba3_sid2uid(s3call);

	case WINBINDD_SID_TO_GID:
	case WINBINDD_DUAL_SID2GID:
		return wbsrv_samba3_sid2gid(s3call);

	case WINBINDD_UID_TO_SID:
	case WINBINDD_DUAL_UID2SID:
		return wbsrv_samba3_uid2sid(s3call);

	case WINBINDD_GID_TO_SID:
	case WINBINDD_DUAL_GID2SID:
		return wbsrv_samba3_gid2sid(s3call);

	case WINBINDD_DOMAIN_INFO:
		return wbsrv_samba3_domain_info(s3call);

	case WINBINDD_PAM_LOGOFF:
		return wbsrv_samba3_pam_logoff(s3call);

	/* Unimplemented commands */
	case WINBINDD_GETPWSID:
	case WINBINDD_PAM_CHAUTHTOK:
	case WINBINDD_PAM_CHNG_PSWD_AUTH_CRAP:
	case WINBINDD_LOOKUPRIDS:
	case WINBINDD_SIDS_TO_XIDS:
	case WINBINDD_ALLOCATE_UID:
	case WINBINDD_ALLOCATE_GID:
	case WINBINDD_SHOW_SEQUENCE:
	case WINBINDD_WINS_BYIP:
	case WINBINDD_WINS_BYNAME:
	case WINBINDD_GETGRLST:
	case WINBINDD_GETSIDALIASES:
	case WINBINDD_DSGETDCNAME:
	case WINBINDD_INIT_CONNECTION:
	case WINBINDD_DUAL_SIDS2XIDS:
	case WINBINDD_DUAL_USERINFO:
	case WINBINDD_DUAL_GETSIDALIASES:
	case WINBINDD_DUAL_NDRCMD:
	case WINBINDD_CCACHE_NTLMAUTH:
	case WINBINDD_NUM_CMDS:
		DEBUG(10, ("Unimplemented winbind samba3 request %d\n", 
			   s3call->request->cmd));
		break;
	}

	s3call->response->result = WINBINDD_ERROR;
	return NT_STATUS_OK;
}

static NTSTATUS wbsrv_samba3_push_reply(struct wbsrv_samba3_call *call)
{
	uint8_t *extra_data;
	size_t extra_data_len = 0;

	extra_data = (uint8_t *)call->response->extra_data.data;
	if (extra_data != NULL) {
		extra_data_len = call->response->length -
			sizeof(*call->response);
	}

	call->out = data_blob_talloc(call, NULL, call->response->length);
	NT_STATUS_HAVE_NO_MEMORY(call->out.data);

	/* don't push real pointer values into sockets */
	if (extra_data) {
		call->response->extra_data.data = (void *)0xFFFFFFFF;
	}

	memcpy(call->out.data, call->response, sizeof(*call->response));
	/* set back the pointer */
	call->response->extra_data.data = extra_data;

	if (extra_data) {
		memcpy(call->out.data + sizeof(*call->response),
		       extra_data,
		       extra_data_len);
	}

	return NT_STATUS_OK;
}

static void wbsrv_samba3_send_reply_done(struct tevent_req *subreq);

/*
 * queue a wbsrv_call reply on a wbsrv_connection
 * NOTE: that this implies talloc_free(call),
 *       use talloc_reference(call) if you need it after
 *       calling wbsrv_queue_reply
 */
NTSTATUS wbsrv_samba3_send_reply(struct wbsrv_samba3_call *call)
{
	struct wbsrv_connection *wbsrv_conn = call->wbconn;
	struct tevent_req *subreq;
	NTSTATUS status;

	status = wbsrv_samba3_push_reply(call);
	NT_STATUS_NOT_OK_RETURN(status);

	call->out_iov[0].iov_base = (char *) call->out.data;
	call->out_iov[0].iov_len = call->out.length;

	subreq = tstream_writev_queue_send(call,
					   wbsrv_conn->conn->event.ctx,
					   wbsrv_conn->tstream,
					   wbsrv_conn->send_queue,
					   call->out_iov, 1);
	if (subreq == NULL) {
		wbsrv_terminate_connection(wbsrv_conn, "wbsrv_call_loop: "
				"no memory for tstream_writev_queue_send");
		return NT_STATUS_NO_MEMORY;
	}
	tevent_req_set_callback(subreq, wbsrv_samba3_send_reply_done, call);

	return status;
}

static void wbsrv_samba3_send_reply_done(struct tevent_req *subreq)
{
	struct wbsrv_samba3_call *call = tevent_req_callback_data(subreq,
			struct wbsrv_samba3_call);
	int sys_errno;
	int rc;

	rc = tstream_writev_queue_recv(subreq, &sys_errno);
	TALLOC_FREE(subreq);
	if (rc == -1) {
		const char *reason;

		reason = talloc_asprintf(call, "wbsrv_samba3_send_reply_done: "
					 "tstream_writev_queue_recv() - %d:%s",
					 sys_errno, strerror(sys_errno));
		if (reason == NULL) {
			reason = "wbsrv_samba3_send_reply_done: "
				 "tstream_writev_queue_recv() failed";
		}

		wbsrv_terminate_connection(call->wbconn, reason);
		return;
	}

	talloc_free(call);
}

NTSTATUS wbsrv_samba3_process(struct wbsrv_samba3_call *call)
{
	NTSTATUS status;

	status = wbsrv_samba3_pull_request(call);
	
	if (!NT_STATUS_IS_OK(status)) {
		return status;
	}

	status = wbsrv_samba3_handle_call(call);

	if (!NT_STATUS_IS_OK(status)) {
		talloc_free(call);
		return status;
	}

	if (call->flags & WBSRV_CALL_FLAGS_REPLY_ASYNC) {
		return NT_STATUS_OK;
	}

	status = wbsrv_samba3_send_reply(call);
	return status;
}