2 Copyright (C) Andrew Tridgell 1995-1999
4 This software may be distributed either under the terms of the
5 BSD-style license that accompanies tcpdump or the GNU GPL version 2
13 static const char rcsid[] =
14 "@(#) $Header: /tcpdump/master/tcpdump/smbutil.c,v 1.12 2000/12/04 00:35:45 guy Exp $";
17 #include <sys/param.h>
19 #include <sys/types.h>
20 #include <sys/socket.h>
23 #include <netinet/in.h>
31 #include "interface.h"
34 extern const uchar *startbuf;
36 /*******************************************************************
37 interpret a 32 bit dos packed date/time to some parameters
38 ********************************************************************/
39 static void interpret_dos_date(uint32 date,int *year,int *month,int *day,int *hour,int *minute,int *second)
43 p0=date&0xFF; p1=((date&0xFF00)>>8)&0xFF;
44 p2=((date&0xFF0000)>>16)&0xFF; p3=((date&0xFF000000)>>24)&0xFF;
46 *second = 2*(p0 & 0x1F);
47 *minute = ((p0>>5)&0xFF) + ((p1&0x7)<<3);
50 *month = ((p2>>5)&0xFF) + ((p3&0x1)<<3) - 1;
51 *year = ((p3>>1)&0xFF) + 80;
54 /*******************************************************************
55 create a unix date from a dos date
56 ********************************************************************/
57 static time_t make_unix_date(const void *date_ptr)
62 dos_date = IVAL(date_ptr,0);
64 if (dos_date == 0) return(0);
66 interpret_dos_date(dos_date,&t.tm_year,&t.tm_mon,
67 &t.tm_mday,&t.tm_hour,&t.tm_min,&t.tm_sec);
75 /*******************************************************************
76 create a unix date from a dos date
77 ********************************************************************/
78 static time_t make_unix_date2(const void *date_ptr)
83 x2 = ((x&0xFFFF)<<16) | ((x&0xFFFF0000)>>16);
86 return(make_unix_date((void *)&x));
89 /****************************************************************************
90 interpret an 8 byte "filetime" structure to a time_t
91 It's originally in "100ns units since jan 1st 1601"
92 ****************************************************************************/
93 static time_t interpret_long_date(const char *p)
98 /* this gives us seconds since jan 1st 1601 (approx) */
99 d = (IVAL(p,4)*256.0 + CVAL(p,3)) * (1.0e-7 * (1<<24));
101 /* now adjust by 369 years to make the secs since 1970 */
102 d -= 369.0*365.25*24*60*60;
104 /* and a fudge factor as we got it wrong by a few days */
105 d += (3*24*60*60 + 6*60*60 + 2);
116 /****************************************************************************
117 interpret the weird netbios "name". Return the name type, or -1 if
118 we run past the end of the buffer
119 ****************************************************************************/
120 static int name_interpret(const uchar *in,const uchar *maxbuf,char *out)
126 return(-1); /* name goes past the end of the buffer */
132 if (len > 30 || len<1) return(0);
136 if (in + 1 >= maxbuf)
137 return(-1); /* name goes past the end of the buffer */
139 if (in[0] < 'A' || in[0] > 'P' || in[1] < 'A' || in[1] > 'P') {
143 *out = ((in[0]-'A')<<4) + (in[1]-'A');
156 /****************************************************************************
157 find a pointer to a netbios name
158 ****************************************************************************/
159 static const uchar *name_ptr(const uchar *buf,int ofs,const uchar *maxbuf)
166 return(NULL); /* name goes past the end of the buffer */
171 /* XXX - this should use the same code that the DNS dissector does */
172 if ((c & 0xC0) == 0xC0)
174 uint16 l = RSVAL(buf, ofs) & 0x3FFF;
177 /* We have a pointer that points to itself. */
182 return(NULL); /* name goes past the end of the buffer */
190 return(NULL); /* name goes past the end of the buffer */
193 /****************************************************************************
194 extract a netbios name from a buf
195 ****************************************************************************/
196 static int name_extract(const uchar *buf,int ofs,const uchar *maxbuf,char *name)
198 const uchar *p = name_ptr(buf,ofs,maxbuf);
200 return(-1); /* error (probably name going past end of buffer) */
202 return(name_interpret(p,maxbuf,name));
206 /****************************************************************************
207 return the total storage length of a mangled name
208 ****************************************************************************/
209 static int name_len(const unsigned char *s, const unsigned char *maxbuf)
211 const unsigned char *s0 = s;
215 return(-1); /* name goes past the end of the buffer */
218 if ((c & 0xC0) == 0xC0)
223 return(-1); /* name goes past the end of the buffer */
227 return(PTR_DIFF(s,s0)+1);
230 return(-1); /* name goes past the end of the buffer */
233 static void print_asc(const unsigned char *buf,int len)
237 printf("%c",isprint(buf[i])?buf[i]:'.');
240 static char *name_type_str(int name_type)
242 static char *f = NULL;
244 case 0: f = "Workstation"; break;
245 case 0x03: f = "Client?"; break;
246 case 0x20: f = "Server"; break;
247 case 0x1d: f = "Master Browser"; break;
248 case 0x1b: f = "Domain Controller"; break;
249 case 0x1e: f = "Browser Server"; break;
250 default: f = "Unknown"; break;
255 void print_data(const unsigned char *buf, int len)
261 printf("%02X ",(int)buf[i]);
263 if (i%8 == 0) printf(" ");
265 print_asc(&buf[i-16],8); printf(" ");
266 print_asc(&buf[i-8],8); printf("\n");
267 if (i<len) printf("[%03X] ",i);
275 if (n>8) printf(" ");
276 while (n--) printf(" ");
279 print_asc(&buf[i-(i%16)],n); printf(" ");
281 if (n>0) print_asc(&buf[i-n],n);
287 static void write_bits(unsigned int val,char *fmt)
292 while ((p=strchr(fmt,'|'))) {
293 int l = PTR_DIFF(p,fmt);
294 if (l && (val & (1<<i)))
295 printf("%.*s ",l,fmt);
301 /* convert a unicode string */
302 static const char *unistr(const char *s, int *len)
304 static char buf[1000];
306 static int use_unicode = -1;
308 if (use_unicode == -1) {
309 char *p = getenv("USE_UNICODE");
310 if (p && (atoi(p) == 1))
316 /* maybe it isn't unicode - a cheap trick */
317 if (!use_unicode || (s[0] && s[1])) {
324 if (s[0] == 0 && s[1] != 0) {
329 while (l < (sizeof(buf)-1) && s[0] && s[1] == 0) {
339 static const uchar *fdata1(const uchar *buf, const char *fmt, const uchar *maxbuf)
342 char *attrib_fmt = "READONLY|HIDDEN|SYSTEM|VOLUME|DIR|ARCHIVE|";
345 while (*fmt && buf<maxbuf) {
348 write_bits(CVAL(buf,0),attrib_fmt);
353 write_bits(SVAL(buf,0),attrib_fmt);
360 char *p = strchr(++fmt,'}');
361 int l = PTR_DIFF(p,fmt);
362 strncpy(bitfmt,fmt,l);
365 write_bits(CVAL(buf,0),bitfmt);
375 while (isdigit(*fmt)) fmt++;
384 unsigned int x = reverse?RIVAL(buf,0):IVAL(buf,0);
385 printf("%d (0x%x)",x, x);
392 unsigned int x1 = reverse?RIVAL(buf,0):IVAL(buf,0);
393 unsigned int x2 = reverse?RIVAL(buf,4):IVAL(buf,4);
395 printf("0x%08x:%08x",x2, x1);
397 printf("%d (0x%08x%08x)",x1, x2, x1);
405 unsigned int x = reverse?RSVAL(buf,0):SVAL(buf,0);
406 printf("%d (0x%x)",x, x);
413 unsigned int x = reverse?RIVAL(buf,0):IVAL(buf,0);
421 unsigned int x = reverse?RSVAL(buf,0):SVAL(buf,0);
429 unsigned int x = CVAL(buf,0);
437 unsigned int x = CVAL(buf,0);
438 printf("%d (0x%x)",x, x);
445 printf("%.*s",(int)PTR_DIFF(maxbuf,buf),unistr(buf, &len));
452 if (*buf != 4 && *buf != 2)
453 printf("Error! ASCIIZ buffer of type %d (safety=%d)\n",
454 *buf,(int)PTR_DIFF(maxbuf,buf));
455 printf("%.*s",(int)PTR_DIFF(maxbuf,buf+1),unistr(buf+1, &len));
463 printf("%-*.*s",l,l,buf);
465 fmt++; while (isdigit(*fmt)) fmt++;
471 while (l--) printf("%02x",*buf++);
472 fmt++; while (isdigit(*fmt)) fmt++;
483 name_type = name_extract(startbuf,PTR_DIFF(buf,startbuf),maxbuf,
487 len = name_len(buf,maxbuf);
491 printf("%-15.15s NameType=0x%02X (%s)",
492 nbuf,name_type,name_type_str(name_type));
496 printf("%-15.15s NameType=0x%02X (%s)",
497 buf,name_type,name_type_str(name_type));
501 fmt++; while (isdigit(*fmt)) fmt++;
508 switch (atoi(fmt+1)) {
510 if (x==0 || x==-1 || x==0xFFFFFFFF)
513 t = make_unix_date(buf);
517 if (x==0 || x==-1 || x==0xFFFFFFFF)
520 t = make_unix_date2(buf);
524 t = interpret_long_date(buf);
528 printf("%s",t?asctime(localtime(&t)):"NULL\n");
529 fmt++; while (isdigit(*fmt)) fmt++;
539 if (buf>=maxbuf && *fmt)
540 printf("END OF BUFFER\n");
546 printf("WARNING: Short packet. Try increasing the snap length\n");
550 const uchar *fdata(const uchar *buf, const char *fmt, const uchar *maxbuf)
560 while (buf < maxbuf) {
563 buf2 = fdata(buf,fmt,maxbuf);
565 if (buf2 == buf) return(buf);
572 if (buf>=maxbuf) return(buf);
587 if (buf>=maxbuf) return(buf);
588 memset(s, 0, sizeof(s));
590 strncpy(s,fmt,p-fmt);
592 buf = fdata1(buf,s,maxbuf);
598 putchar(*fmt); fmt++;
603 if (!depth && buf<maxbuf) {
604 int len = PTR_DIFF(maxbuf,buf);
605 printf("Data: (%d bytes)\n",len);
619 /* Dos Error Messages */
620 static err_code_struct dos_msgs[] = {
621 {"ERRbadfunc",1,"Invalid function."},
622 {"ERRbadfile",2,"File not found."},
623 {"ERRbadpath",3,"Directory invalid."},
624 {"ERRnofids",4,"No file descriptors available"},
625 {"ERRnoaccess",5,"Access denied."},
626 {"ERRbadfid",6,"Invalid file handle."},
627 {"ERRbadmcb",7,"Memory control blocks destroyed."},
628 {"ERRnomem",8,"Insufficient server memory to perform the requested function."},
629 {"ERRbadmem",9,"Invalid memory block address."},
630 {"ERRbadenv",10,"Invalid environment."},
631 {"ERRbadformat",11,"Invalid format."},
632 {"ERRbadaccess",12,"Invalid open mode."},
633 {"ERRbaddata",13,"Invalid data."},
634 {"ERR",14,"reserved."},
635 {"ERRbaddrive",15,"Invalid drive specified."},
636 {"ERRremcd",16,"A Delete Directory request attempted to remove the server's current directory."},
637 {"ERRdiffdevice",17,"Not same device."},
638 {"ERRnofiles",18,"A File Search command can find no more files matching the specified criteria."},
639 {"ERRbadshare",32,"The sharing mode specified for an Open conflicts with existing FIDs on the file."},
640 {"ERRlock",33,"A Lock request conflicted with an existing lock or specified an invalid mode, or an Unlock requested attempted to remove a lock held by another process."},
641 {"ERRfilexists",80,"The file named in a Create Directory, Make New File or Link request already exists."},
642 {"ERRbadpipe",230,"Pipe invalid."},
643 {"ERRpipebusy",231,"All instances of the requested pipe are busy."},
644 {"ERRpipeclosing",232,"Pipe close in progress."},
645 {"ERRnotconnected",233,"No process on other end of pipe."},
646 {"ERRmoredata",234,"There is more data to be returned."},
649 /* Server Error Messages */
650 err_code_struct server_msgs[] = {
651 {"ERRerror",1,"Non-specific error code."},
652 {"ERRbadpw",2,"Bad password - name/password pair in a Tree Connect or Session Setup are invalid."},
653 {"ERRbadtype",3,"reserved."},
654 {"ERRaccess",4,"The requester does not have the necessary access rights within the specified context for the requested function. The context is defined by the TID or the UID."},
655 {"ERRinvnid",5,"The tree ID (TID) specified in a command was invalid."},
656 {"ERRinvnetname",6,"Invalid network name in tree connect."},
657 {"ERRinvdevice",7,"Invalid device - printer request made to non-printer connection or non-printer request made to printer connection."},
658 {"ERRqfull",49,"Print queue full (files) -- returned by open print file."},
659 {"ERRqtoobig",50,"Print queue full -- no space."},
660 {"ERRqeof",51,"EOF on print queue dump."},
661 {"ERRinvpfid",52,"Invalid print file FID."},
662 {"ERRsmbcmd",64,"The server did not recognize the command received."},
663 {"ERRsrverror",65,"The server encountered an internal error, e.g., system file unavailable."},
664 {"ERRfilespecs",67,"The file handle (FID) and pathname parameters contained an invalid combination of values."},
665 {"ERRreserved",68,"reserved."},
666 {"ERRbadpermits",69,"The access permissions specified for a file or directory are not a valid combination. The server cannot set the requested attribute."},
667 {"ERRreserved",70,"reserved."},
668 {"ERRsetattrmode",71,"The attribute mode in the Set File Attribute request is invalid."},
669 {"ERRpaused",81,"Server is paused."},
670 {"ERRmsgoff",82,"Not receiving messages."},
671 {"ERRnoroom",83,"No room to buffer message."},
672 {"ERRrmuns",87,"Too many remote user names."},
673 {"ERRtimeout",88,"Operation timed out."},
674 {"ERRnoresource",89,"No resources currently available for request."},
675 {"ERRtoomanyuids",90,"Too many UIDs active on this session."},
676 {"ERRbaduid",91,"The UID is not known as a valid ID on this session."},
677 {"ERRusempx",250,"Temp unable to support Raw, use MPX mode."},
678 {"ERRusestd",251,"Temp unable to support Raw, use standard read/write."},
679 {"ERRcontmpx",252,"Continue in MPX mode."},
680 {"ERRreserved",253,"reserved."},
681 {"ERRreserved",254,"reserved."},
682 {"ERRnosupport",0xFFFF,"Function not supported."},
685 /* Hard Error Messages */
686 err_code_struct hard_msgs[] = {
687 {"ERRnowrite",19,"Attempt to write on write-protected diskette."},
688 {"ERRbadunit",20,"Unknown unit."},
689 {"ERRnotready",21,"Drive not ready."},
690 {"ERRbadcmd",22,"Unknown command."},
691 {"ERRdata",23,"Data error (CRC)."},
692 {"ERRbadreq",24,"Bad request structure length."},
693 {"ERRseek",25 ,"Seek error."},
694 {"ERRbadmedia",26,"Unknown media type."},
695 {"ERRbadsector",27,"Sector not found."},
696 {"ERRnopaper",28,"Printer out of paper."},
697 {"ERRwrite",29,"Write fault."},
698 {"ERRread",30,"Read fault."},
699 {"ERRgeneral",31,"General failure."},
700 {"ERRbadshare",32,"A open conflicts with an existing open."},
701 {"ERRlock",33,"A Lock request conflicted with an existing lock or specified an invalid mode, or an Unlock requested attempted to remove a lock held by another process."},
702 {"ERRwrongdisk",34,"The wrong disk was found in a drive."},
703 {"ERRFCBUnavail",35,"No FCBs are available to process request."},
704 {"ERRsharebufexc",36,"A sharing buffer has been exceeded."},
712 err_code_struct *err_msgs;
715 {0x01,"ERRDOS",dos_msgs},
716 {0x02,"ERRSRV",server_msgs},
717 {0x03,"ERRHRD",hard_msgs},
718 {0x04,"ERRXOS",NULL},
719 {0xE1,"ERRRMX1",NULL},
720 {0xE2,"ERRRMX2",NULL},
721 {0xE3,"ERRRMX3",NULL},
722 {0xFF,"ERRCMD",NULL},
726 /****************************************************************************
727 return a SMB error string from a SMB buffer
728 ****************************************************************************/
729 char *smb_errstr(int class,int num)
731 static char ret[128];
736 for (i=0;err_classes[i].class;i++)
737 if (err_classes[i].code == class)
739 if (err_classes[i].err_msgs)
741 err_code_struct *err = err_classes[i].err_msgs;
742 for (j=0;err[j].name;j++)
743 if (num == err[j].code)
745 snprintf(ret,sizeof(ret),"%s - %s (%s)",err_classes[i].class,
746 err[j].name,err[j].message);
751 snprintf(ret,sizeof(ret),"%s - %d",err_classes[i].class,num);
755 snprintf(ret,sizeof(ret),"ERROR: Unknown error (%d,%d)",class,num);