summaryrefslogtreecommitdiff
path: root/source3/include/smb_macros.h
blob: 2b3140783bf642b324bc1a042e9fff4394497e23 (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
/* 
   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 2 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, write to the Free Software
   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/

#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)

#ifndef SAFE_FREE /* Oh no this is also defined in tdb.h */

/**
 * Free memory if the pointer and zero the pointer.
 *
 * @note You are explicitly allowed to pass NULL pointers -- they will
 * always be ignored.
 **/
#define SAFE_FREE(x) do { if ((x) != NULL) {free(CONST_DISCARD(void *, (x))); x=NULL;} } while(0)
#endif

/* zero a structure */
#define ZERO_STRUCT(x) memset((char *)&(x), 0, sizeof(x))

/* zero a structure given a pointer to the structure */
#define ZERO_STRUCTP(x) do { if ((x) != NULL) memset((char *)(x), 0, sizeof(*(x))); } while(0)

/* zero a structure given a pointer to the structure - no zero check */
#define ZERO_STRUCTPN(x) memset((char *)(x), 0, sizeof(*(x)))

/* zero an array - note that sizeof(array) must work - ie. it must not be a 
   pointer */
#define ZERO_ARRAY(x) memset((char *)(x), 0, sizeof(x))

/* pointer difference macro */
#define PTR_DIFF(p1,p2) ((ptrdiff_t)(((const char *)(p1)) - (const char *)(p2)))

/* work out how many elements there are in a static array */
#define ARRAY_SIZE(a) (sizeof(a)/sizeof(a[0]))

/* assert macros */
#define SMB_ASSERT(b) ((b)?(void)0: \
        (DEBUG(0,("PANIC: assert failed at %s(%d)\n", \
		 __FILE__, __LINE__)), smb_panic("assert failed")))
#define SMB_ASSERT_ARRAY(a,n) SMB_ASSERT((sizeof(a)/sizeof((a)[0])) >= (n))

/* these are useful macros for checking validity of handles */
#define OPEN_FSP(fsp)    ((fsp) && !(fsp)->is_directory)
#define OPEN_CONN(conn)    ((conn) && (conn)->open)
#define IS_IPC(conn)       ((conn) && (conn)->ipc)
#define IS_PRINT(conn)       ((conn) && (conn)->printer)
#define FSP_BELONGS_CONN(fsp,conn) do {\
			extern struct current_user current_user;\
			if (!((fsp) && (conn) && ((conn)==(fsp)->conn) && (current_user.vuid==(fsp)->vuid))) \
				return(ERROR_DOS(ERRDOS,ERRbadfid));\
			} while(0)

#define FNUM_OK(fsp,c) (OPEN_FSP(fsp) && (c)==(fsp)->conn && current_user.vuid==(fsp)->vuid)

#define CHECK_FSP(fsp,conn) do {\
			extern struct current_user current_user;\
			if (!FNUM_OK(fsp,conn)) \
				return(ERROR_DOS(ERRDOS,ERRbadfid)); \
			else if((fsp)->fd == -1) \
				return(ERROR_DOS(ERRDOS,ERRbadaccess));\
			} while(0)

#define CHECK_READ(fsp) if (!(fsp)->can_read) \
				return(ERROR_DOS(ERRDOS,ERRbadaccess))
#define CHECK_WRITE(fsp) if (!(fsp)->can_write) \
				return(ERROR_DOS(ERRDOS,ERRbadaccess))

#define CHECK_ERROR(fsp) if (HAS_CACHED_ERROR(fsp)) \
				return(CACHED_ERROR(fsp))

#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)->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((conn)->service))
#define MAP_HIDDEN(conn)   ((conn) && lp_map_hidden((conn)->service))
#define MAP_SYSTEM(conn)   ((conn) && lp_map_system((conn)->service))
#define MAP_ARCHIVE(conn)   ((conn) && lp_map_archive((conn)->service))
#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_nlink != 0)  
#define VALID_STAT_OF_DIR(st) (VALID_STAT(st) && S_ISDIR((st).st_mode))

#ifndef MIN
#define MIN(a,b) ((a)<(b)?(a):(b))
#endif
#ifndef MAX
#define MAX(a,b) ((a)>(b)?(a):(b))
#endif

#ifndef ABS
#define ABS(a) ((a)>0?(a):(-(a)))
#endif

/* 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)))

/* Macro to cache an error in a write_bmpx_struct */
#define CACHE_ERROR(w,c,e) ((w)->wr_errclass = (c), (w)->wr_error = (e), \
                w->wr_discard = True, -1)
/* Macro to test if an error has been cached for this fnum */
#define HAS_CACHED_ERROR(fsp) ((fsp)->wbmpx_ptr && \
                (fsp)->wbmpx_ptr->wr_discard)
/* Macro to turn the cached error into an error packet */
#define CACHED_ERROR(fsp) cached_error_packet(outbuf,fsp,__LINE__,__FILE__)

/* these are the datagram types */
#define DGRAM_DIRECT_UNIQUE 0x10

#define ERROR_DOS(class,code) error_packet(outbuf,NT_STATUS_OK,class,code,False,__LINE__,__FILE__)
#define ERROR_FORCE_DOS(class,code) error_packet(outbuf,NT_STATUS_OK,class,code,True,__LINE__,__FILE__)
#define ERROR_NT(status) error_packet(outbuf,status,0,0,False,__LINE__,__FILE__)
#define ERROR_BOTH(status,class,code) error_packet(outbuf,status,class,code,False,__LINE__,__FILE__)

/* this is how errors are generated */
#define UNIXERROR(defclass,deferror) unix_error_packet(outbuf,defclass,deferror,__LINE__,__FILE__)

#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)))

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

#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)

/*******************************************************************
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 IP addresses are equal
****************************************************************************/

#define ip_equal(ip1,ip2) ((ip1).s_addr == (ip2).s_addr)
#define ip_service_equal(ip1,ip2) ( ((ip1).ip.s_addr == (ip2).ip.s_addr) && ((ip1).port == (ip2).port) )

/*****************************************************************
 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)

/****************************************************************************
 Used by dptr_zero.
****************************************************************************/

#define DPTR_MASK ((uint32)(((uint32)1)<<31))

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

#define dptr_zero(buf) ((IVAL(buf,1)&~DPTR_MASK) == 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 DO 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_REALLOC(p,s) Realloc((p),(s))
#define SMB_REALLOC_ARRAY(p,type,count) (type *)realloc_array((p),sizeof(type),(count))
#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))

/* limiting size of ipc replies */
#define SMB_REALLOC_LIMIT(ptr,size) SMB_REALLOC(ptr,MAX((size),4*1024))

/* #define PARANOID_MALLOC_CHECKER 1 */

#if defined(PARANOID_MALLOC_CHECKER)

#define TALLOC(ctx, size) talloc_((ctx),(size))
#define TALLOC_P(ctx, type) (type *)talloc_((ctx),sizeof(type))
#define TALLOC_ARRAY(ctx, type, count) (type *)talloc_array_((ctx),sizeof(type),(count))
#define TALLOC_MEMDUP(ctx, ptr, size) talloc_memdup_((ctx),(ptr),(size))
#define TALLOC_ZERO(ctx, size) talloc_zero_((ctx),(size))
#define TALLOC_ZERO_P(ctx, type) (type *)talloc_zero_((ctx),sizeof(type))
#define TALLOC_ZERO_ARRAY(ctx, type, count) (type *)talloc_zero_array_((ctx),sizeof(type),(count))
#define TALLOC_REALLOC(ctx, ptr, count) talloc_realloc_((ctx),(ptr),(count))
#define TALLOC_REALLOC_ARRAY(ctx, ptr, type, count) (type *)talloc_realloc_array_((ctx),(ptr),sizeof(type),(count))

#define PRS_ALLOC_MEM(ps, type, count) (type *)prs_alloc_mem_((ps),sizeof(type),(count))
#define PRS_ALLOC_MEM_VOID(ps, size) prs_alloc_mem_((ps),(size),1)


/* 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 TALLOC(ctx, size) talloc((ctx),(size))
#define TALLOC_P(ctx, type) (type *)talloc((ctx),sizeof(type))
#define TALLOC_ARRAY(ctx, type, count) (type *)talloc_array((ctx),sizeof(type),(count))
#define TALLOC_MEMDUP(ctx, ptr, size) talloc_memdup((ctx),(ptr),(size))
#define TALLOC_ZERO(ctx, size) talloc_zero((ctx),(size))
#define TALLOC_ZERO_P(ctx, type) (type *)talloc_zero((ctx),sizeof(type))
#define TALLOC_ZERO_ARRAY(ctx, type, count) (type *)talloc_zero_array((ctx),sizeof(type),(count))
#define TALLOC_REALLOC(ctx, ptr, count) talloc_realloc((ctx),(ptr),(count))
#define TALLOC_REALLOC_ARRAY(ctx, ptr, type, count) (type *)talloc_realloc_array((ctx),(ptr),sizeof(type),(count))

#define PRS_ALLOC_MEM(ps, type, count) (type *)prs_alloc_mem((ps),sizeof(type),(count))
#define PRS_ALLOC_MEM_VOID(ps, size) prs_alloc_mem((ps),(size),1)

/* 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

#endif /* _SMB_MACROS_H */