summaryrefslogtreecommitdiff
path: root/source4/libcli/raw/libcliraw.h
blob: 1b9cba8e380daa7ce89d3b7877fa9b463d38b5c6 (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
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
/*
   Unix SMB/CIFS implementation.
   SMB parameters and setup

   Copyright (C) Andrew Tridgell 2002-2004
   Copyright (C) James Myers 2003 <myersjj@samba.org>

   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/>.
*/

#ifndef __LIBCLI_RAW_H__
#define __LIBCLI_RAW_H__

#include "libcli/raw/request.h"
#include "librpc/gen_ndr/nbt.h"

struct smbcli_tree;  /* forward declare */
struct smbcli_request;  /* forward declare */
struct smbcli_session;  /* forward declare */
struct smbcli_transport;  /* forward declare */

struct resolve_context;
struct cli_credentials;
struct gensec_settings;

/* default timeout for all smb requests */
#define SMB_REQUEST_TIMEOUT 60

/* context that will be and has been negotiated between the client and server */
struct smbcli_negotiate {
	/* 
	 * negotiated maximum transmit size - this is given to us by the server
	 */
	uint32_t max_xmit;

	/* maximum number of requests that can be multiplexed */
	uint16_t max_mux;

	/* the negotiatiated protocol */
	enum protocol_types protocol;

	uint8_t sec_mode;		/* security mode returned by negprot */
	uint8_t key_len;
	DATA_BLOB server_guid;      /* server_guid */
	DATA_BLOB secblob;      /* cryptkey or negTokenInit blob */
	uint32_t sesskey;
	
	struct smb_signing_context sign_info;

	/* capabilities that the server reported */
	uint32_t capabilities;
	
	int server_zone;
	time_t server_time;
	uint_t readbraw_supported:1;
	uint_t writebraw_supported:1;

	char *server_domain;
};
	
/* this is the context for a SMB socket associated with the socket itself */
struct smbcli_socket {
	struct socket_context *sock;

	/* what port we ended up connected to */
	int port;

	/* the hostname we connected to */
	const char *hostname;

	/* the event handle for waiting for socket IO */
	struct {
		struct tevent_context *ctx;
		struct tevent_fd *fde;
		struct tevent_timer *te;
	} event;
};

/*
  this structure allows applications to control the behaviour of the
  client library
*/
struct smbcli_options {
	uint_t use_oplocks:1;
	uint_t use_level2_oplocks:1;
	uint_t use_spnego:1;
	uint_t unicode:1;
	uint_t ntstatus_support:1;
	int max_protocol;
	uint32_t max_xmit;
	uint16_t max_mux;
	int request_timeout;
	enum smb_signing_state signing;
};

/* this is the context for the client transport layer */
struct smbcli_transport {
	/* socket level info */
	struct smbcli_socket *socket;

	/* the next mid to be allocated - needed for signing and
	   request matching */
	uint16_t next_mid;
	
	/* negotiated protocol information */
	struct smbcli_negotiate negotiate;

	/* options to control the behaviour of the client code */
	struct smbcli_options options;

	/* is a readbraw pending? we need to handle that case
	   specially on receiving packets */
	uint_t readbraw_pending:1;
	
	/* an idle function - if this is defined then it will be
	   called once every period microseconds while we are waiting
	   for a packet */
	struct {
		void (*func)(struct smbcli_transport *, void *);
		void *private;
		uint_t period;
	} idle;

	/* the error fields from the last message */
	struct {
		enum {ETYPE_NONE, ETYPE_SMB, ETYPE_SOCKET, ETYPE_NBT} etype;
		union {
			NTSTATUS nt_status;
			enum {SOCKET_READ_TIMEOUT,
			      SOCKET_READ_EOF,
			      SOCKET_READ_ERROR,
			      SOCKET_WRITE_ERROR,
			      SOCKET_READ_BAD_SIG} socket_error;
			uint_t nbt_error;
		} e;
	} error;

	struct {
		/* a oplock break request handler */
		bool (*handler)(struct smbcli_transport *transport, 
				uint16_t tid, uint16_t fnum, uint8_t level, void *private_data);
		/* private data passed to the oplock handler */
		void *private;
	} oplock;

	/* a list of async requests that are pending for receive on this connection */
	struct smbcli_request *pending_recv;

	/* remember the called name - some sub-protocols require us to
	   know the server name */
	struct nbt_name called;

	/* context of the stream -> packet parser */
	struct packet_context *packet;

	/* iconv convenience */
	struct smb_iconv_convenience *iconv_convenience;
};

/* this is the context for the user */

/* this is the context for the session layer */
struct smbcli_session {	
	/* transport layer info */
	struct smbcli_transport *transport;
	
	/* after a session setup the server provides us with
	   a vuid identifying the security context */
	uint16_t vuid;

	/* default pid for this session */
	uint32_t pid;

	/* the flags2 for each packet - this allows
	   the user to control these for torture testing */
	uint16_t flags2;

	DATA_BLOB user_session_key;

	/* the spnego context if we use extented security */
	struct gensec_security *gensec;

	struct smbcli_session_options {
		uint_t lanman_auth:1;
		uint_t ntlmv2_auth:1;
		uint_t plaintext_auth:1;
	} options;
};

/* 
   smbcli_tree context: internal state for a tree connection. 
 */
struct smbcli_tree {
	/* session layer info */
	struct smbcli_session *session;

	uint16_t tid;			/* tree id, aka cnum */
	char *device;
	char *fs_type;
};


/*
  a client request moves between the following 4 states.
*/
enum smbcli_request_state {SMBCLI_REQUEST_INIT, /* we are creating the request */
			SMBCLI_REQUEST_RECV, /* we are waiting for a matching reply */
			SMBCLI_REQUEST_DONE, /* the request is finished */
			SMBCLI_REQUEST_ERROR}; /* a packet or transport level error has occurred */

/* the context for a single SMB request. This is passed to any request-context 
 * functions (similar to context.h, the server version).
 * This will allow requests to be multi-threaded. */
struct smbcli_request {
	/* allow a request to be part of a list of requests */
	struct smbcli_request *next, *prev;

	/* each request is in one of 4 possible states */
	enum smbcli_request_state state;
	
	/* a request always has a transport context, nearly always has
	   a session context and usually has a tree context */
	struct smbcli_transport *transport;
	struct smbcli_session *session;
	struct smbcli_tree *tree;

	/* a receive helper, smbcli_transport_finish_recv will not call
	   req->async.fn callback handler unless the recv_helper returns
	   a value > SMBCLI_REQUEST_RECV. */
	struct {
		enum smbcli_request_state (*fn)(struct smbcli_request *);
		void *private_data;
	} recv_helper;

	/* the flags2 from the SMB request, in raw form (host byte
	   order). Used to parse strings */
	uint16_t flags2;

	/* the NT status for this request. Set by packet receive code
	   or code detecting error. */
	NTSTATUS status;
	
	/* the sequence number of this packet - used for signing */
	uint_t seq_num;

	/* list of ntcancel request for this requests */
	struct smbcli_request *ntcancel;

	/* set if this is a one-way request, meaning we are not
	   expecting a reply from the server. */
	uint_t one_way_request:1;

	/* set this when the request should only increment the signing
	   counter by one */
	uint_t sign_single_increment:1;

	/* the caller wants to do the signing check */
	bool sign_caller_checks;

	/* give the caller a chance to prevent the talloc_free() in the _recv() function */
	bool do_not_free;

	/* the mid of this packet - used to match replies */
	uint16_t mid;

	struct smb_request_buffer in;
	struct smb_request_buffer out;

	/* information on what to do with a reply when it is received
	   asyncronously. If this is not setup when a reply is received then
	   the reply is discarded

	   The private pointer is private to the caller of the client
	   library (the application), not private to the library
	*/
	struct {
		void (*fn)(struct smbcli_request *);
		void *private;
	} async;
};

/* useful way of catching wct errors with file and line number */
#define SMBCLI_CHECK_MIN_WCT(req, wcount) if ((req)->in.wct < (wcount)) { \
      DEBUG(1,("Unexpected WCT %d at %s(%d) - expected min %d\n", (req)->in.wct, __FILE__, __LINE__, wcount)); \
      req->status = NT_STATUS_INVALID_PARAMETER; \
      goto failed; \
}

#define SMBCLI_CHECK_WCT(req, wcount) if ((req)->in.wct != (wcount)) { \
      DEBUG(1,("Unexpected WCT %d at %s(%d) - expected %d\n", (req)->in.wct, __FILE__, __LINE__, wcount)); \
      req->status = NT_STATUS_INVALID_PARAMETER; \
      goto failed; \
}

#include "libcli/raw/interfaces.h" 

NTSTATUS smb_raw_read_recv(struct smbcli_request *req, union smb_read *parms);
struct smbcli_request *smb_raw_read_send(struct smbcli_tree *tree, union smb_read *parms);
NTSTATUS smb_raw_trans_recv(struct smbcli_request *req,
			     TALLOC_CTX *mem_ctx,
			     struct smb_trans2 *parms);
size_t smb_raw_max_trans_data(struct smbcli_tree *tree, size_t param_size);
struct smbcli_request *smb_raw_trans_send(struct smbcli_tree *tree, struct smb_trans2 *parms);
NTSTATUS smbcli_request_destroy(struct smbcli_request *req);
struct smbcli_request *smb_raw_write_send(struct smbcli_tree *tree, union smb_write *parms);
struct smbcli_request *smb_raw_close_send(struct smbcli_tree *tree, union smb_close *parms);
NTSTATUS smb_raw_open_recv(struct smbcli_request *req, TALLOC_CTX *mem_ctx, union smb_open *parms);
struct smbcli_request *smb_raw_open_send(struct smbcli_tree *tree, union smb_open *parms);

bool smbcli_transport_process(struct smbcli_transport *transport);
const char *smbcli_errstr(struct smbcli_tree *tree);
NTSTATUS smb_raw_fsinfo(struct smbcli_tree *tree, TALLOC_CTX *mem_ctx, union smb_fsinfo *fsinfo);
NTSTATUS smb_raw_pathinfo(struct smbcli_tree *tree, TALLOC_CTX *mem_ctx, union smb_fileinfo *parms);
NTSTATUS smb_raw_shadow_data(struct smbcli_tree *tree, TALLOC_CTX *mem_ctx, struct smb_shadow_copy *info);
NTSTATUS smb_raw_fileinfo(struct smbcli_tree *tree, TALLOC_CTX *mem_ctx, union smb_fileinfo *parms);
struct smbcli_tree *smbcli_tree_init(struct smbcli_session *session, TALLOC_CTX *parent_ctx, bool primary);
NTSTATUS smb_raw_tcon(struct smbcli_tree *tree, TALLOC_CTX *mem_ctx, union smb_tcon *parms);
void smbcli_oplock_handler(struct smbcli_transport *transport, 
			bool (*handler)(struct smbcli_transport *, uint16_t, uint16_t, uint8_t, void *),
			void *private_data);
void smbcli_transport_idle_handler(struct smbcli_transport *transport, 
				   void (*idle_func)(struct smbcli_transport *, void *),
				   uint64_t period,
				   void *private_data);
NTSTATUS smbcli_request_simple_recv(struct smbcli_request *req);
bool smbcli_oplock_ack(struct smbcli_tree *tree, uint16_t fnum, uint16_t ack_level);
NTSTATUS smb_raw_open(struct smbcli_tree *tree, TALLOC_CTX *mem_ctx, union smb_open *parms);
NTSTATUS smb_raw_close(struct smbcli_tree *tree, union smb_close *parms);
NTSTATUS smb_raw_unlink(struct smbcli_tree *tree, union smb_unlink *parms);
NTSTATUS smb_raw_chkpath(struct smbcli_tree *tree, union smb_chkpath *parms);
NTSTATUS smb_raw_mkdir(struct smbcli_tree *tree, union smb_mkdir *parms);
NTSTATUS smb_raw_rmdir(struct smbcli_tree *tree, struct smb_rmdir *parms);
NTSTATUS smb_raw_rename(struct smbcli_tree *tree, union smb_rename *parms);
NTSTATUS smb_raw_seek(struct smbcli_tree *tree, union smb_seek *parms);
NTSTATUS smb_raw_read(struct smbcli_tree *tree, union smb_read *parms);
NTSTATUS smb_raw_write(struct smbcli_tree *tree, union smb_write *parms);
NTSTATUS smb_raw_lock(struct smbcli_tree *tree, union smb_lock *parms);
NTSTATUS smb_raw_setpathinfo(struct smbcli_tree *tree, union smb_setfileinfo *parms);
NTSTATUS smb_raw_setfileinfo(struct smbcli_tree *tree, union smb_setfileinfo *parms);

struct smbcli_request *smb_raw_changenotify_send(struct smbcli_tree *tree, union smb_notify *parms);
NTSTATUS smb_raw_changenotify_recv(struct smbcli_request *req, TALLOC_CTX *mem_ctx, union smb_notify *parms);

NTSTATUS smb_tree_disconnect(struct smbcli_tree *tree);
NTSTATUS smbcli_nt_error(struct smbcli_tree *tree);
NTSTATUS smb_raw_exit(struct smbcli_session *session);
NTSTATUS smb_raw_pathinfo_recv(struct smbcli_request *req,
			       TALLOC_CTX *mem_ctx,
			       union smb_fileinfo *parms);
struct smbcli_request *smb_raw_pathinfo_send(struct smbcli_tree *tree,
					     union smb_fileinfo *parms);
struct smbcli_request *smb_raw_setpathinfo_send(struct smbcli_tree *tree,
					     union smb_setfileinfo *parms);
struct smbcli_request *smb_raw_echo_send(struct smbcli_transport *transport,
					 struct smb_echo *p);
NTSTATUS smb_raw_search_first(struct smbcli_tree *tree,
			      TALLOC_CTX *mem_ctx,
			      union smb_search_first *io, void *private_data,
			      smbcli_search_callback callback);
NTSTATUS smb_raw_flush(struct smbcli_tree *tree, union smb_flush *parms);

NTSTATUS smb_raw_trans(struct smbcli_tree *tree,
		       TALLOC_CTX *mem_ctx,
		       struct smb_trans2 *parms);

struct smbcli_socket *smbcli_sock_connect_byname(const char *host, const char **ports,
						 TALLOC_CTX *mem_ctx,
						 struct resolve_context *resolve_ctx,
						 struct tevent_context *event_ctx,
						 const char *socket_options);
void smbcli_sock_dead(struct smbcli_socket *sock);

#endif /* __LIBCLI_RAW__H__ */