/*
- Unix SMB/Netbios implementation.
- Version 1.9.
+ Unix SMB/CIFS implementation.
SMB Byte handling
Copyright (C) Andrew Tridgell 1992-1998
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
+ 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,
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
+#ifndef _BYTEORDER_H
+#define _BYTEORDER_H
+
/*
This file implements macros for machine independent short and
int manipulation
SIVALS(buf,pos,val) - signed version of SIVAL()
RSVAL(buf,pos) - like SVAL() but for NMB byte ordering
+RSVALS(buf,pos) - like SVALS() but for NMB byte ordering
RIVAL(buf,pos) - like IVAL() but for NMB byte ordering
+RIVALS(buf,pos) - like IVALS() but for NMB byte ordering
RSSVAL(buf,pos,val) - like SSVAL() but for NMB ordering
RSIVAL(buf,pos,val) - like SIVAL() but for NMB ordering
+RSIVALS(buf,pos,val) - like SIVALS() but for NMB ordering
it also defines lots of intermediate macros, just ignore those :-)
*/
-/* some switch macros that do both store and read to and from SMB buffers */
-
-#define RW_PCVAL(read,inbuf,outbuf,len) \
- if (read) { PCVAL (inbuf,0,outbuf,len) } \
- else { PSCVAL(inbuf,0,outbuf,len) }
-
-#define RW_PIVAL(read,inbuf,outbuf,len) \
- if (read) { PIVAL (inbuf,0,outbuf,len) } \
- else { PSIVAL(inbuf,0,outbuf,len) }
-
-#define RW_PSVAL(read,inbuf,outbuf,len) \
- if (read) { PSVAL (inbuf,0,outbuf,len) } \
- else { PSSVAL(inbuf,0,outbuf,len) }
-
-#define RW_CVAL(read, inbuf, outbuf, offset) \
- if (read) (outbuf) = CVAL (inbuf,offset); \
- else SCVAL(inbuf,offset,outbuf);
-
-#define RW_IVAL(read, inbuf, outbuf, offset) \
- if (read) (outbuf)= IVAL (inbuf,offset); \
- else SIVAL(inbuf,offset,outbuf);
-
-#define RW_SVAL(read, inbuf, outbuf, offset) \
- if (read) (outbuf)= SVAL (inbuf,offset); \
- else SSVAL(inbuf,offset,outbuf);
-
#undef CAREFUL_ALIGNMENT
/* we know that the 386 can handle misalignment and has the "right"
#define CAREFUL_ALIGNMENT 1
#endif
-#define CVAL(buf,pos) (((unsigned char *)(buf))[pos])
-#define PVAL(buf,pos) ((unsigned)CVAL(buf,pos))
-#define SCVAL(buf,pos,val) (CVAL(buf,pos) = (val))
+#define CVAL(buf,pos) ((unsigned)(((const unsigned char *)(buf))[pos]))
+#define CVAL_NC(buf,pos) (((unsigned char *)(buf))[pos]) /* Non-const version of CVAL */
+#define PVAL(buf,pos) (CVAL(buf,pos))
+#define SCVAL(buf,pos,val) (CVAL_NC(buf,pos) = (val))
#if CAREFUL_ALIGNMENT
#define SVAL(buf,pos) (PVAL(buf,pos)|PVAL(buf,(pos)+1)<<8)
#define IVAL(buf,pos) (SVAL(buf,pos)|SVAL(buf,(pos)+2)<<16)
-#define SSVALX(buf,pos,val) (CVAL(buf,pos)=(val)&0xFF,CVAL(buf,pos+1)=(val)>>8)
+#define SSVALX(buf,pos,val) (CVAL_NC(buf,pos)=(unsigned char)((val)&0xFF),CVAL_NC(buf,pos+1)=(unsigned char)((val)>>8))
#define SIVALX(buf,pos,val) (SSVALX(buf,pos,val&0xFFFF),SSVALX(buf,pos+2,val>>16))
#define SVALS(buf,pos) ((int16)SVAL(buf,pos))
#define IVALS(buf,pos) ((int32)IVAL(buf,pos))
#define SSVALS(buf,pos,val) SSVALX((buf),(pos),((int16)(val)))
#define SIVALS(buf,pos,val) SIVALX((buf),(pos),((int32)(val)))
-#else
+#else /* CAREFUL_ALIGNMENT */
/* this handles things for architectures like the 386 that can handle
alignment errors */
/* get single value from an SMB buffer */
#define SVAL(buf,pos) (*(const uint16 *)((const char *)(buf) + (pos)))
+#define SVAL_NC(buf,pos) (*(uint16 *)((char *)(buf) + (pos))) /* Non const version of above. */
#define IVAL(buf,pos) (*(const uint32 *)((const char *)(buf) + (pos)))
+#define IVAL_NC(buf,pos) (*(uint32 *)((char *)(buf) + (pos))) /* Non const version of above. */
#define SVALS(buf,pos) (*(const int16 *)((const char *)(buf) + (pos)))
+#define SVALS_NC(buf,pos) (*(int16 *)((char *)(buf) + (pos))) /* Non const version of above. */
#define IVALS(buf,pos) (*(const int32 *)((const char *)(buf) + (pos)))
-
-#define SVALMOD(buf,pos) (*(uint16 *)((char *)(buf) + (pos)))
-#define IVALMOD(buf,pos) (*(uint32 *)((char *)(buf) + (pos)))
-#define SVALMODS(buf,pos) (*(int16 *)((char *)(buf) + (pos)))
-#define IVALMODS(buf,pos) (*(int32 *)((char *)(buf) + (pos)))
+#define IVALS_NC(buf,pos) (*(int32 *)((char *)(buf) + (pos))) /* Non const version of above. */
/* store single value in an SMB buffer */
-#define SSVAL(buf,pos,val) SVALMOD(buf,pos)=((uint16)(val))
-#define SIVAL(buf,pos,val) IVALMOD(buf,pos)=((uint32)(val))
-#define SSVALS(buf,pos,val) SVALMODS(buf,pos)=((int16)(val))
-#define SIVALS(buf,pos,val) IVALMODS(buf,pos)=((int32)(val))
-
-#endif
-
-
-/* macros for reading / writing arrays */
-
-#define SMBMACRO(macro,buf,pos,val,len,size) \
-{ int l; for (l = 0; l < (len); l++) (val)[l] = macro((buf), (pos) + (size)*l); }
-
-#define SSMBMACRO(macro,buf,pos,val,len,size) \
-{ int l; for (l = 0; l < (len); l++) macro((buf), (pos) + (size)*l, (val)[l]); }
-
-/* reads multiple data from an SMB buffer */
-#define PCVAL(buf,pos,val,len) SMBMACRO(CVAL,buf,pos,val,len,1)
-#define PSVAL(buf,pos,val,len) SMBMACRO(SVAL,buf,pos,val,len,2)
-#define PIVAL(buf,pos,val,len) SMBMACRO(IVAL,buf,pos,val,len,4)
-#define PCVALS(buf,pos,val,len) SMBMACRO(CVALS,buf,pos,val,len,1)
-#define PSVALS(buf,pos,val,len) SMBMACRO(SVALS,buf,pos,val,len,2)
-#define PIVALS(buf,pos,val,len) SMBMACRO(IVALS,buf,pos,val,len,4)
-
-/* stores multiple data in an SMB buffer */
-#define PSCVAL(buf,pos,val,len) SSMBMACRO(SCVAL,buf,pos,val,len,1)
-#define PSSVAL(buf,pos,val,len) SSMBMACRO(SSVAL,buf,pos,val,len,2)
-#define PSIVAL(buf,pos,val,len) SSMBMACRO(SIVAL,buf,pos,val,len,4)
-#define PSCVALS(buf,pos,val,len) SSMBMACRO(SCVALS,buf,pos,val,len,1)
-#define PSSVALS(buf,pos,val,len) SSMBMACRO(SSVALS,buf,pos,val,len,2)
-#define PSIVALS(buf,pos,val,len) SSMBMACRO(SIVALS,buf,pos,val,len,4)
+#define SSVAL(buf,pos,val) SVAL_NC(buf,pos)=((uint16)(val))
+#define SIVAL(buf,pos,val) IVAL_NC(buf,pos)=((uint32)(val))
+#define SSVALS(buf,pos,val) SVALS_NC(buf,pos)=((int16)(val))
+#define SIVALS(buf,pos,val) IVALS_NC(buf,pos)=((int32)(val))
+#endif /* CAREFUL_ALIGNMENT */
/* now the reverse routines - these are used in nmb packets (mostly) */
#define SREV(x) ((((x)&0xFF)<<8) | (((x)>>8)&0xFF))
#define IREV(x) ((SREV(x)<<16) | (SREV((x)>>16)))
#define RSVAL(buf,pos) SREV(SVAL(buf,pos))
+#define RSVALS(buf,pos) SREV(SVALS(buf,pos))
#define RIVAL(buf,pos) IREV(IVAL(buf,pos))
+#define RIVALS(buf,pos) IREV(IVALS(buf,pos))
#define RSSVAL(buf,pos,val) SSVAL(buf,pos,SREV(val))
+#define RSSVALS(buf,pos,val) SSVALS(buf,pos,SREV(val))
#define RSIVAL(buf,pos,val) SIVAL(buf,pos,IREV(val))
+#define RSIVALS(buf,pos,val) SIVALS(buf,pos,IREV(val))
-#define DBG_RW_PCVAL(charmode,string,depth,base,read,inbuf,outbuf,len) \
- RW_PCVAL(read,inbuf,outbuf,len) \
- DEBUG(5,("%s%04x %s: ", \
- tab_depth(depth), base,string)); \
- if (charmode) print_asc(5, (unsigned char*)(outbuf), (len)); else \
- { int idx; for (idx = 0; idx < len; idx++) { DEBUG(5,("%02x ", (outbuf)[idx])); } } \
- DEBUG(5,("\n"));
-
-#define DBG_RW_PSVAL(charmode,string,depth,base,read,inbuf,outbuf,len) \
- RW_PSVAL(read,inbuf,outbuf,len) \
- DEBUG(5,("%s%04x %s: ", \
- tab_depth(depth), base,string)); \
- if (charmode) print_asc(5, (unsigned char*)(outbuf), 2*(len)); else \
- { int idx; for (idx = 0; idx < len; idx++) { DEBUG(5,("%04x ", (outbuf)[idx])); } } \
- DEBUG(5,("\n"));
-
-#define DBG_RW_PIVAL(charmode,string,depth,base,read,inbuf,outbuf,len) \
- RW_PIVAL(read,inbuf,outbuf,len) \
- DEBUG(5,("%s%04x %s: ", \
- tab_depth(depth), base,string)); \
- if (charmode) print_asc(5, (unsigned char*)(outbuf), 4*(len)); else \
- { int idx; for (idx = 0; idx < len; idx++) { DEBUG(5,("%08x ", (outbuf)[idx])); } } \
- DEBUG(5,("\n"));
-
-#define DBG_RW_CVAL(string,depth,base,read,inbuf,outbuf) \
- RW_CVAL(read,inbuf,outbuf,0) \
- DEBUG(5,("%s%04x %s: %02x\n", \
- tab_depth(depth), base, string, outbuf));
-
-#define DBG_RW_SVAL(string,depth,base,read,inbuf,outbuf) \
- RW_SVAL(read,inbuf,outbuf,0) \
- DEBUG(5,("%s%04x %s: %04x\n", \
- tab_depth(depth), base, string, outbuf));
-
-#define DBG_RW_IVAL(string,depth,base,read,inbuf,outbuf) \
- RW_IVAL(read,inbuf,outbuf,0) \
- DEBUG(5,("%s%04x %s: %08x\n", \
- tab_depth(depth), base, string, outbuf));
+/* Alignment macros. */
+#define ALIGN4(p,base) ((p) + ((4 - (PTR_DIFF((p), (base)) & 3)) & 3))
+#define ALIGN2(p,base) ((p) + ((2 - (PTR_DIFF((p), (base)) & 1)) & 1))
+#endif /* _BYTEORDER_H */
git.samba.org / samba.git / blobdiff