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packet parsing routines. for use in SMB and Mailslots
This commit is contained in:
Luke Leighton
-
parent
25b7ada358
commit
297d5ef46c
385
source/smbparse.c
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385
source/smbparse.c
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/*
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Unix SMB/Netbios implementation.
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Version 1.9.
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Samba utility functions
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Copyright (C) Luke Leighton 1996 - 1997
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include "includes.h"
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extern int DEBUGLEVEL;
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/*******************************************************************
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reads or writes an NTTIME structure.
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********************************************************************/
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char* smb_io_time(BOOL io, NTTIME *nttime, char *q, char *base, int align)
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{
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if (nttime == NULL) return NULL;
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q = align_offset(q, base, align);
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RW_IVAL(io, q, nttime->low , 0); q += 4; /* low part */
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RW_IVAL(io, q, nttime->high, 0); q += 4; /* high part */
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return q;
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}
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/*******************************************************************
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reads or writes a DOM_SID structure.
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********************************************************************/
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char* smb_io_sid(BOOL io, DOM_SID *sid, char *q, char *base, int align)
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{
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int i;
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if (sid == NULL) return NULL;
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q = align_offset(q, base, align);
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RW_CVAL(io, q, sid->sid_no, 0); q++;
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RW_CVAL(io, q, sid->num_auths, 0); q++;
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for (i = 0; i < 6; i++)
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{
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RW_CVAL(io, q, sid->id_auth[i], 0); q++;
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}
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/* oops! XXXX should really issue a warning here... */
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if (sid->num_auths > MAXSUBAUTHS) sid->num_auths = MAXSUBAUTHS;
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RW_PSVAL(io, q, sid->sub_auths, sid->num_auths); q += sid->num_auths * 2;
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return q;
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}
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/*******************************************************************
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reads or writes a UNIHDR structure.
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********************************************************************/
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char* smb_io_unihdr(BOOL io, UNIHDR *hdr, char *q, char *base, int align)
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{
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if (hdr == NULL) return NULL;
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/* should be value 4, so enforce it. */
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hdr->undoc = 4;
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q = align_offset(q, base, align);
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RW_IVAL(io, q, hdr->uni_max_len, 0); q += 4;
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RW_IVAL(io, q, hdr->uni_str_len, 0); q += 4;
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RW_IVAL(io, q, hdr->undoc , 0); q += 4;
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return q;
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}
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/*******************************************************************
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reads or writes a UNIHDR2 structure.
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********************************************************************/
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char* smb_io_unihdr2(BOOL io, UNIHDR2 *hdr2, char *q, char *base, int align)
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{
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if (hdr2 == NULL) return NULL;
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q = align_offset(q, base, align);
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q = smb_io_unihdr(io, &(hdr2->unihdr), q, base, align);
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RW_IVAL(io, q, hdr2->undoc_buffer, 0); q += 4;
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return q;
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}
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/*******************************************************************
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reads or writes a UNISTR structure.
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XXXX NOTE: UNISTR structures NEED to be null-terminated.
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********************************************************************/
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char* smb_io_unistr(BOOL io, UNISTR *uni, char *q, char *base, int align)
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{
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if (uni == NULL) return NULL;
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q = align_offset(q, base, align);
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if (io)
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{
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/* io True indicates read _from_ the SMB buffer into the string */
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q += 2 * unistrcpy((char*)uni->buffer, q);
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}
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else
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{
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/* io True indicates copy _from_ the string into SMB buffer */
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q += 2 * unistrcpy(q, (char*)uni->buffer);
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}
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return q;
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}
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/*******************************************************************
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reads or writes a UNISTR2 structure.
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XXXX NOTE: UNISTR2 structures need NOT be null-terminated.
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the uni_str_len member tells you how long the string is;
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the uni_max_len member tells you how large the buffer is.
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********************************************************************/
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char* smb_io_unistr2(BOOL io, UNISTR2 *uni2, char *q, char *base, int align)
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{
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if (uni2 == NULL) return NULL;
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q = align_offset(q, base, align);
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/* should be value 0, so enforce it. */
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uni2->undoc = 0;
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RW_IVAL(io, q, uni2->uni_max_len, 0); q += 4;
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RW_IVAL(io, q, uni2->undoc , 0); q += 4;
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RW_IVAL(io, q, uni2->uni_str_len, 0); q += 4;
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/* oops! XXXX maybe issue a warning that this is happening... */
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if (uni2->uni_max_len > MAX_UNISTRLEN) uni2->uni_max_len = MAX_UNISTRLEN;
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if (uni2->uni_str_len > MAX_UNISTRLEN) uni2->uni_str_len = MAX_UNISTRLEN;
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/* buffer advanced by indicated length of string
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NOT by searching for null-termination */
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RW_PSVAL(io, q, uni2->buffer, uni2->uni_max_len); q += uni2->uni_max_len * 2;
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return q;
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}
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/*******************************************************************
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reads or writes a DOM_SID2 structure.
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********************************************************************/
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char* smb_io_dom_sid2(BOOL io, DOM_SID2 *sid2, char *q, char *base, int align)
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{
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if (sid2 == NULL) return NULL;
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q = align_offset(q, base, align);
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/* should be value 5, so enforce it */
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sid2->type = 5;
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/* should be value 0, so enforce it */
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sid2->undoc = 0;
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RW_IVAL(io, q, sid2->type , 0); q += 4;
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RW_IVAL(io, q, sid2->undoc, 0); q += 4;
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q = smb_io_unihdr2(io, &(sid2->hdr), q, base, align);
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q = smb_io_unistr (io, &(sid2->str), q, base, align);
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return q;
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}
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/*******************************************************************
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reads or writes a DOM_RID2 structure.
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********************************************************************/
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char* smb_io_dom_rid2(BOOL io, DOM_RID2 *rid2, char *q, char *base, int align)
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{
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if (rid2 == NULL) return NULL;
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q = align_offset(q, base, align);
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/* should be value 5, so enforce it */
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rid2->type = 5;
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/* should be value 5, so enforce it */
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rid2->undoc = 5;
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RW_IVAL(io, q, rid2->type, 0); q += 4;
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RW_IVAL(io, q, rid2->undoc , 0); q += 4;
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RW_IVAL(io, q, rid2->rid , 0); q += 4;
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RW_IVAL(io, q, rid2->rid_idx , 0); q += 4;
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return q;
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}
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/*******************************************************************
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reads or writes a DOM_LOG_INFO structure.
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********************************************************************/
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char* smb_io_log_info(BOOL io, DOM_LOG_INFO *log, char *q, char *base, int align)
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{
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if (log == NULL) return NULL;
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q = align_offset(q, base, align);
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RW_IVAL(io, q, log->undoc_buffer, 0); q += 4;
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q = smb_io_unistr2(io, &(log->uni_logon_srv), q, base, align);
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q = smb_io_unistr2(io, &(log->uni_acct_name), q, base, align);
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RW_SVAL(io, q, log->sec_chan, 0); q += 2;
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/* XXXX no alignment required between sec_chan and uni_comp_name */
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q = smb_io_unistr2(io, &(log->uni_comp_name), q, base, 0);
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return q;
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}
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/*******************************************************************
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reads or writes a DOM_CRED structure.
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********************************************************************/
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char* smb_io_cred(BOOL io, DOM_CRED *cred, char *q, char *base, int align)
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{
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if (cred == NULL) return NULL;
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q = align_offset(q, base, align);
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RW_PCVAL(io, q, cred->data, 8); q += 8;
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RW_IVAL (io, q, cred->timestamp, 0); q += 4;
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return q;
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}
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/*******************************************************************
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reads or writes a DOM_CLNT_INFO structure.
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********************************************************************/
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char* smb_io_clnt_info(BOOL io, DOM_CLNT_INFO *clnt, char *q, char *base, int align)
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{
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if (clnt == NULL) return NULL;
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q = align_offset(q, base, align);
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q = smb_io_log_info(io, &(clnt->login), q, base, align);
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q = smb_io_cred (io, &(clnt->cred ), q, base, align);
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return q;
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}
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/*******************************************************************
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reads or writes a DOM_LOGON_ID structure.
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********************************************************************/
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char* smb_io_logon_id(BOOL io, DOM_LOGON_ID *log, char *q, char *base, int align)
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{
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if (log == NULL) return NULL;
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q = align_offset(q, base, align);
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RW_IVAL(io, q, log->low , 0); q += 4;
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RW_IVAL(io, q, log->high, 0); q += 4;
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return q;
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}
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/*******************************************************************
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reads or writes an RC4_OWF structure.
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********************************************************************/
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char* smb_io_rc4_owf(BOOL io, RC4_OWF *hash, char *q, char *base, int align)
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{
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if (hash == NULL) return NULL;
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q = align_offset(q, base, align);
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RW_PCVAL(io, q, hash->data, 16); q += 16;
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return q;
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}
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/*******************************************************************
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reads or writes an DOM_ID_INFO_1 structure.
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********************************************************************/
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char* smb_io_id_info1(BOOL io, DOM_ID_INFO_1 *id, char *q, char *base, int align)
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{
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if (id == NULL) return NULL;
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q = align_offset(q, base, align);
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q = smb_io_unihdr(io, &(id->hdr_domain_name ), q, base, align);
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RW_IVAL(io, q, id->param, 0); q += 4;
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q = smb_io_logon_id(io, &(id->logon_id), q, base, align);
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q = smb_io_unihdr(io, &(id->hdr_user_name ), q, base, align);
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q = smb_io_unihdr(io, &(id->hdr_workgroup_name), q, base, align);
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q = smb_io_rc4_owf(io, &(id->rc4_lm_owf), q, base, align);
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q = smb_io_rc4_owf(io, &(id->rc4_nt_owf), q, base, align);
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q = smb_io_unistr2(io, &(id->uni_domain_name ), q, base, align);
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q = smb_io_unistr2(io, &(id->uni_user_name ), q, base, align);
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q = smb_io_unistr2(io, &(id->uni_workgroup_name), q, base, align);
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return q;
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}
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/*******************************************************************
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reads or writes a DOM_SAM_INFO structure.
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********************************************************************/
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char* smb_io_sam_info(BOOL io, DOM_SAM_INFO *sam, char *q, char *base, int align)
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{
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if (sam == NULL) return NULL;
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q = align_offset(q, base, align);
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q = smb_io_clnt_info(io, &(sam->client ), q, base, align);
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q = smb_io_cred (io, &(sam->rtn_cred), q, base, align);
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RW_IVAL(io, q, sam->logon_level, 0); q += 4;
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RW_SVAL(io, q, sam->auth_level , 0); q += 4;
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switch (sam->auth_level)
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{
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case 1:
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{
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q = smb_io_id_info1(io, &(sam->auth.id1), q, base, align);
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break;
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}
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default:
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{
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/* PANIC! */
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break;
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}
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}
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return q;
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}
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/*******************************************************************
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reads or writes a DOM_GID structure.
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********************************************************************/
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char* smb_io_gid(BOOL io, DOM_GID *gid, char *q, char *base, int align)
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{
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if (gid == NULL) return NULL;
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q = align_offset(q, base, align);
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RW_IVAL(io, q, gid->gid , 0); q += 4;
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RW_IVAL(io, q, gid->attr, 0); q += 4;
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return q;
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}
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#if 0
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/*******************************************************************
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reads or writes a structure.
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********************************************************************/
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char* smb_io_(BOOL io, *, char *q, char *base, int align)
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{
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if (== NULL) return NULL;
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q = align_offset(q, base, align);
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RW_IVAL(io, q, , 0); q += 4;
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return q;
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}
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/*******************************************************************
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reads or writes a structure.
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********************************************************************/
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char* smb_io_(BOOL io, *, char *q, char *base, int align)
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{
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if (== NULL) return NULL;
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q = align_offset(q, base, align);
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RW_IVAL(io, q, , 0); q += 4;
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return q;
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}
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#endif
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