summaryrefslogtreecommitdiff
path: root/source3/include/smb_macros.h
blob: a4a9ca088ac55c467b0d5a0ae0c6fb82a7b54437 (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
/* 
   Unix SMB/CIFS implementation.
   SMB parameters and setup
   Copyright (C) Andrew Tridgell 1992-1999
   Copyright (C) John H Terpstra 1996-1999
   Copyright (C) Luke Kenneth Casson Leighton 1996-1999
   Copyright (C) Paul Ashton 1998 - 1999
   
   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 _SMB_MACROS_H
#define _SMB_MACROS_H

/* Misc bit macros */
#define BOOLSTR(b) ((b) ? "Yes" : "No")
#define BITSETW(ptr,bit) ((SVAL(ptr,0) & (1<<(bit)))!=0)

/* for readability... */
#define IS_DOS_READONLY(test_mode) (((test_mode) & aRONLY) != 0)
#define IS_DOS_DIR(test_mode)      (((test_mode) & aDIR) != 0)
#define IS_DOS_ARCHIVE(test_mode)  (((test_mode) & aARCH) != 0)
#define IS_DOS_SYSTEM(test_mode)   (((test_mode) & aSYSTEM) != 0)
#define IS_DOS_HIDDEN(test_mode)   (((test_mode) & aHIDDEN) != 0)

#define SMB_WARN(condition, message) \
    ((condition) ? (void)0 : \
     DEBUG(0, ("WARNING: %s: %s\n", #condition, message)))

#define SMB_ASSERT_ARRAY(a,n) SMB_ASSERT((sizeof(a)/sizeof((a)[0])) >= (n))

/* these are useful macros for checking validity of handles */
#define IS_IPC(conn)       ((conn) && (conn)->ipc)
#define IS_PRINT(conn)       ((conn) && (conn)->printer)
/* you must add the following extern declaration to files using this macro
 * (do not add it to the macro as that causes nested extern declaration warnings)
 * extern struct current_user current_user;
 */
#define FSP_BELONGS_CONN(fsp,conn) do {\
			if (!((fsp) && (conn) && ((conn)==(fsp)->conn) && (current_user.vuid==(fsp)->vuid))) \
				return ERROR_NT(NT_STATUS_INVALID_HANDLE); \
			} while(0)

#define CHECK_READ(fsp,req) (((fsp)->fh->fd != -1) && ((fsp)->can_read || \
			((req->flags2 & FLAGS2_READ_PERMIT_EXECUTE) && \
			 (fsp->access_mask & FILE_EXECUTE))))

#define CHECK_WRITE(fsp) ((fsp)->can_write && ((fsp)->fh->fd != -1))

#define ERROR_WAS_LOCK_DENIED(status) (NT_STATUS_EQUAL((status), NT_STATUS_LOCK_NOT_GRANTED) || \
				NT_STATUS_EQUAL((status), NT_STATUS_FILE_LOCK_CONFLICT) )

/* the service number for the [globals] defaults */ 
#define GLOBAL_SECTION_SNUM	(-1)
/* translates a connection number into a service number */
#define SNUM(conn)         	((conn)?(conn)->params->service:GLOBAL_SECTION_SNUM)


/* access various service details */
#define SERVICE(snum)      (lp_servicename(snum))
#define PRINTERNAME(snum)  (lp_printername(snum))
#define CAN_WRITE(conn)    (!conn->read_only)
#define VALID_SNUM(snum)   (lp_snum_ok(snum))
#define GUEST_OK(snum)     (VALID_SNUM(snum) && lp_guest_ok(snum))
#define GUEST_ONLY(snum)   (VALID_SNUM(snum) && lp_guest_only(snum))
#define CAN_SETDIR(snum)   (!lp_no_set_dir(snum))
#define CAN_PRINT(conn)    ((conn) && lp_print_ok(SNUM(conn)))
#define MAP_HIDDEN(conn)   ((conn) && lp_map_hidden(SNUM(conn)))
#define MAP_SYSTEM(conn)   ((conn) && lp_map_system(SNUM(conn)))
#define MAP_ARCHIVE(conn)   ((conn) && lp_map_archive(SNUM(conn)))
#define IS_HIDDEN_PATH(conn,path)  ((conn) && is_in_path((path),(conn)->hide_list,(conn)->case_sensitive))
#define IS_VETO_PATH(conn,path)  ((conn) && is_in_path((path),(conn)->veto_list,(conn)->case_sensitive))
#define IS_VETO_OPLOCK_PATH(conn,path)  ((conn) && is_in_path((path),(conn)->veto_oplock_list,(conn)->case_sensitive))

/* 
 * Used by the stat cache code to check if a returned
 * stat structure is valid.
 */

#define VALID_STAT(st) ((st).st_ex_nlink != 0)
#define VALID_STAT_OF_DIR(st) (VALID_STAT(st) && S_ISDIR((st).st_ex_mode))
#define SET_STAT_INVALID(st) ((st).st_ex_nlink = 0)

/* Macros to get at offsets within smb_lkrng and smb_unlkrng
   structures. We cannot define these as actual structures
   due to possible differences in structure packing
   on different machines/compilers. */

#define SMB_LPID_OFFSET(indx) (10 * (indx))
#define SMB_LKOFF_OFFSET(indx) ( 2 + (10 * (indx)))
#define SMB_LKLEN_OFFSET(indx) ( 6 + (10 * (indx)))
#define SMB_LARGE_LPID_OFFSET(indx) (20 * (indx))
#define SMB_LARGE_LKOFF_OFFSET_HIGH(indx) (4 + (20 * (indx)))
#define SMB_LARGE_LKOFF_OFFSET_LOW(indx) (8 + (20 * (indx)))
#define SMB_LARGE_LKLEN_OFFSET_HIGH(indx) (12 + (20 * (indx)))
#define SMB_LARGE_LKLEN_OFFSET_LOW(indx) (16 + (20 * (indx)))

#define ERROR_DOS(class,code) error_packet(outbuf,class,code,NT_STATUS_OK,__LINE__,__FILE__)
#define ERROR_NT(status) error_packet(outbuf,0,0,status,__LINE__,__FILE__)
#define ERROR_FORCE_NT(status) error_packet(outbuf,-1,-1,status,__LINE__,__FILE__)
#define ERROR_BOTH(status,class,code) error_packet(outbuf,class,code,status,__LINE__,__FILE__)

#define reply_nterror(req,status) reply_nt_error(req,status,__LINE__,__FILE__)
#define reply_doserror(req,eclass,ecode) reply_dos_error(req,eclass,ecode,__LINE__,__FILE__)
#define reply_botherror(req,status,eclass,ecode) reply_both_error(req,eclass,ecode,status,__LINE__,__FILE__)

#if 0
/* defined in IDL */
/* these are the datagram types */
#define DGRAM_DIRECT_UNIQUE 0x10
#endif

#define SMB_ROUNDUP(x,r) ( ((x)%(r)) ? ( (((x)+(r))/(r))*(r) ) : (x))

/* Extra macros added by Ying Chen at IBM - speed increase by inlining. */
#define smb_buf(buf) (((char *)(buf)) + smb_size + CVAL(buf,smb_wct)*2)
#define smb_buflen(buf) (SVAL(buf,smb_vwv0 + (int)CVAL(buf, smb_wct)*2))

/* the remaining number of bytes in smb buffer 'buf' from pointer 'p'. */
#define smb_bufrem(buf, p) (smb_buflen(buf)-PTR_DIFF(p, smb_buf(buf)))
#define smbreq_bufrem(req, p) (req->buflen - PTR_DIFF(p, req->buf))


/* Note that chain_size must be available as an extern int to this macro. */
#define smb_offset(p,buf) (PTR_DIFF(p,buf+4))

#define smb_len(buf) (PVAL(buf,3)|(PVAL(buf,2)<<8)|((PVAL(buf,1)&1)<<16))
#define _smb_setlen(buf,len) do { buf[0] = 0; buf[1] = ((len)&0x10000)>>16; \
        buf[2] = ((len)&0xFF00)>>8; buf[3] = (len)&0xFF; } while (0)

#define smb_len_large(buf) (PVAL(buf,3)|(PVAL(buf,2)<<8)|(PVAL(buf,1)<<16))
#define _smb_setlen_large(buf,len) do { buf[0] = 0; buf[1] = ((len)&0xFF0000)>>16; \
        buf[2] = ((len)&0xFF00)>>8; buf[3] = (len)&0xFF; } while (0)

#define ENCRYPTION_REQUIRED(conn) ((conn) ? ((conn)->encrypt_level == Required) : false)
#define IS_CONN_ENCRYPTED(conn) ((conn) ? (conn)->encrypted_tid : false)

/*******************************************************************
find the difference in milliseconds between two struct timeval
values
********************************************************************/

#define TvalDiff(tvalold,tvalnew) \
  (((tvalnew)->tv_sec - (tvalold)->tv_sec)*1000 +  \
	 ((int)(tvalnew)->tv_usec - (int)(tvalold)->tv_usec)/1000)

/****************************************************************************
true if two IPv4 addresses are equal
****************************************************************************/

#define ip_equal_v4(ip1,ip2) ((ip1).s_addr == (ip2).s_addr)

/*****************************************************************
 splits out the last subkey of a key
 *****************************************************************/  

#define reg_get_subkey(full_keyname, key_name, subkey_name) \
	split_at_last_component(full_keyname, key_name, '\\', subkey_name)

/****************************************************************************
 Return True if the offset is at zero.
****************************************************************************/

#define dptr_zero(buf) (IVAL(buf,1) == 0)

/*******************************************************************
copy an IP address from one buffer to another
********************************************************************/

#define putip(dest,src) memcpy(dest,src,4)

/*******************************************************************
 Return True if a server has CIFS UNIX capabilities.
********************************************************************/

#define SERVER_HAS_UNIX_CIFS(c) ((c)->capabilities & CAP_UNIX)

/****************************************************************************
 Make a filename into unix format.
****************************************************************************/

#define IS_DIRECTORY_SEP(c) ((c) == '\\' || (c) == '/')
#define unix_format(fname) string_replace(fname,'\\','/')
#define unix_format_w(fname) string_replace_w(fname, UCS2_CHAR('\\'), UCS2_CHAR('/'))

/****************************************************************************
 Make a file into DOS format.
****************************************************************************/

#define dos_format(fname) string_replace(fname,'/','\\')

/*****************************************************************************
 Check to see if we are a DC for this domain
*****************************************************************************/

#define IS_DC  (lp_server_role()==ROLE_DOMAIN_PDC || lp_server_role()==ROLE_DOMAIN_BDC) 

/*****************************************************************************
 Safe allocation macros.
*****************************************************************************/

#define SMB_MALLOC_ARRAY(type,count) (type *)malloc_array(sizeof(type),(count))
#define SMB_MEMALIGN_ARRAY(type,align,count) (type *)memalign_array(sizeof(type),align,(count))
#define SMB_REALLOC(p,s) Realloc((p),(s),True)	/* Always frees p on error or s == 0 */
#define SMB_REALLOC_KEEP_OLD_ON_ERROR(p,s) Realloc((p),(s),False) /* Never frees p on error or s == 0 */
#define SMB_REALLOC_ARRAY(p,type,count) (type *)realloc_array((p),sizeof(type),(count),True) /* Always frees p on error or s == 0 */
#define SMB_REALLOC_ARRAY_KEEP_OLD_ON_ERROR(p,type,count) (type *)realloc_array((p),sizeof(type),(count),False) /* Never frees p on error or s == 0 */
#define SMB_CALLOC_ARRAY(type,count) (type *)calloc_array(sizeof(type),(count))
#define SMB_XMALLOC_P(type) (type *)smb_xmalloc_array(sizeof(type),1)
#define SMB_XMALLOC_ARRAY(type,count) (type *)smb_xmalloc_array(sizeof(type),(count))

/* The new talloc is paranoid malloc checker safe. */

#if 0

Disable these now we have checked all code paths and ensured
NULL returns on zero request. JRA.

#define TALLOC(ctx, size) talloc_zeronull(ctx, size, __location__)
#define TALLOC_P(ctx, type) (type *)talloc_zeronull(ctx, sizeof(type), #type)
#define TALLOC_ARRAY(ctx, type, count) (type *)_talloc_array_zeronull(ctx, sizeof(type), count, #type)
#define TALLOC_MEMDUP(ctx, ptr, size) _talloc_memdup_zeronull(ctx, ptr, size, __location__)
#define TALLOC_ZERO(ctx, size) _talloc_zero_zeronull(ctx, size, __location__)
#define TALLOC_ZERO_P(ctx, type) (type *)_talloc_zero_zeronull(ctx, sizeof(type), #type)
#define TALLOC_ZERO_ARRAY(ctx, type, count) (type *)_talloc_zero_array_zeronull(ctx, sizeof(type), count, #type)
#define TALLOC_SIZE(ctx, size) talloc_zeronull(ctx, size, __location__)
#define TALLOC_ZERO_SIZE(ctx, size) _talloc_zero_zeronull(ctx, size, __location__)

#else

#define TALLOC(ctx, size) talloc_named_const(ctx, size, __location__)
#define TALLOC_P(ctx, type) (type *)talloc_named_const(ctx, sizeof(type), #type)
#define TALLOC_ARRAY(ctx, type, count) (type *)_talloc_array(ctx, sizeof(type), count, #type)
#define TALLOC_MEMDUP(ctx, ptr, size) _talloc_memdup(ctx, ptr, size, __location__)
#define TALLOC_ZERO(ctx, size) _talloc_zero(ctx, size, __location__)
#define TALLOC_ZERO_P(ctx, type) (type *)_talloc_zero(ctx, sizeof(type), #type)
#define TALLOC_ZERO_ARRAY(ctx, type, count) (type *)_talloc_zero_array(ctx, sizeof(type), count, #type)
#define TALLOC_SIZE(ctx, size) talloc_named_const(ctx, size, __location__)
#define TALLOC_ZERO_SIZE(ctx, size) _talloc_zero(ctx, size, __location__)

#endif

#define TALLOC_REALLOC(ctx, ptr, count) _talloc_realloc(ctx, ptr, count, __location__)
#define TALLOC_REALLOC_ARRAY(ctx, ptr, type, count) (type *)_talloc_realloc_array(ctx, ptr, sizeof(type), count, #type)
#define talloc_destroy(ctx) talloc_free(ctx)
#ifndef TALLOC_FREE
#define TALLOC_FREE(ctx) do { talloc_free(ctx); ctx=NULL; } while(0)
#endif

/* only define PARANOID_MALLOC_CHECKER with --enable-developer */

#if defined(DEVELOPER)
#  define PARANOID_MALLOC_CHECKER 1
#endif

#if defined(PARANOID_MALLOC_CHECKER)

#define PRS_ALLOC_MEM(ps, type, count) (type *)prs_alloc_mem_((ps),sizeof(type),(count))

/* Get medieval on our ass about malloc.... */

/* Restrictions on malloc/realloc/calloc. */
#ifdef malloc
#undef malloc
#endif
#define malloc(s) __ERROR_DONT_USE_MALLOC_DIRECTLY

#ifdef realloc
#undef realloc
#endif
#define realloc(p,s) __ERROR_DONT_USE_REALLOC_DIRECTLY

#ifdef calloc
#undef calloc
#endif
#define calloc(n,s) __ERROR_DONT_USE_CALLOC_DIRECTLY

#ifdef strndup
#undef strndup
#endif
#define strndup(s,n) __ERROR_DONT_USE_STRNDUP_DIRECTLY

#ifdef strdup
#undef strdup
#endif
#define strdup(s) __ERROR_DONT_USE_STRDUP_DIRECTLY

#define SMB_MALLOC(s) malloc_(s)
#define SMB_MALLOC_P(type) (type *)malloc_(sizeof(type))

#define SMB_STRDUP(s) smb_xstrdup(s)
#define SMB_STRNDUP(s,n) smb_xstrndup(s,n)

#else

#define PRS_ALLOC_MEM(ps, type, count) (type *)prs_alloc_mem((ps),sizeof(type),(count))

/* Regular malloc code. */

#define SMB_MALLOC(s) malloc(s)
#define SMB_MALLOC_P(type) (type *)malloc(sizeof(type))

#define SMB_STRDUP(s) strdup(s)
#define SMB_STRNDUP(s,n) strndup(s,n)

#endif

#define ADD_TO_ARRAY(mem_ctx, type, elem, array, num) \
do { \
	*(array) = ((mem_ctx) != NULL) ? \
		TALLOC_REALLOC_ARRAY(mem_ctx, (*(array)), type, (*(num))+1) : \
		SMB_REALLOC_ARRAY((*(array)), type, (*(num))+1); \
	SMB_ASSERT((*(array)) != NULL); \
	(*(array))[*(num)] = (elem); \
	(*(num)) += 1; \
} while (0)

#define ADD_TO_LARGE_ARRAY(mem_ctx, type, elem, array, num, size) \
	add_to_large_array((mem_ctx), sizeof(type), &(elem), (void *)(array), (num), (size));

#ifndef toupper_ascii_fast
/* Warning - this must only be called with 0 <= c < 128. IT WILL
 * GIVE GARBAGE if c > 128 or c < 0. JRA.
 */
extern const char toupper_ascii_fast_table[];
#define toupper_ascii_fast(c) toupper_ascii_fast_table[(unsigned int)(c)];
#endif

#endif /* _SMB_MACROS_H */