packet parsing routines. for use in SMB and Mailslots

1 files changed, 385 insertions, 0 deletions

diff --git a/source/smbparse.c b/source/smbparse.c
new file mode 100644
index 00000000000..bff1a1453a4
--- /dev/null
+++ b/source/smbparse.c
@@ -0,0 +1,385 @@
+/* 
+   Unix SMB/Netbios implementation.
+   Version 1.9.
+   Samba utility functions
+   Copyright (C) Luke Leighton 1996 - 1997
+   
+   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.
+*/
+
+#include "includes.h"
+
+extern int DEBUGLEVEL;
+
+
+/*******************************************************************
+reads or writes an NTTIME structure.
+********************************************************************/
+char* smb_io_time(BOOL io, NTTIME *nttime, char *q, char *base, int align)
+{
+	if (nttime == NULL) return NULL;
+
+	q = align_offset(q, base, align);
+	
+	RW_IVAL(io, q, nttime->low , 0); q += 4; /* low part */
+	RW_IVAL(io, q, nttime->high, 0); q += 4; /* high part */
+
+	return q;
+}
+
+/*******************************************************************
+reads or writes a DOM_SID structure.
+********************************************************************/
+char* smb_io_sid(BOOL io, DOM_SID *sid, char *q, char *base, int align)
+{
+	int i;
+
+	if (sid == NULL) return NULL;
+
+	q = align_offset(q, base, align);
+	
+	RW_CVAL(io, q, sid->sid_no, 0); q++; 
+	RW_CVAL(io, q, sid->num_auths, 0); q++;
+
+	for (i = 0; i < 6; i++)
+	{
+		RW_CVAL(io, q, sid->id_auth[i], 0); q++;
+	}
+
+	/* oops! XXXX should really issue a warning here... */
+	if (sid->num_auths > MAXSUBAUTHS) sid->num_auths = MAXSUBAUTHS;
+
+	RW_PSVAL(io, q, sid->sub_auths, sid->num_auths); q += sid->num_auths * 2;
+
+	return q;
+}
+
+/*******************************************************************
+reads or writes a UNIHDR structure.
+********************************************************************/
+char* smb_io_unihdr(BOOL io, UNIHDR *hdr, char *q, char *base, int align)
+{
+	if (hdr == NULL) return NULL;
+
+	/* should be value 4, so enforce it. */
+	hdr->undoc = 4;
+
+	q = align_offset(q, base, align);
+	
+	RW_IVAL(io, q, hdr->uni_max_len, 0); q += 4;
+	RW_IVAL(io, q, hdr->uni_str_len, 0); q += 4;
+	RW_IVAL(io, q, hdr->undoc      , 0); q += 4;
+
+	return q;
+}
+
+/*******************************************************************
+reads or writes a UNIHDR2 structure.
+********************************************************************/
+char* smb_io_unihdr2(BOOL io, UNIHDR2 *hdr2, char *q, char *base, int align)
+{
+	if (hdr2 == NULL) return NULL;
+
+	q = align_offset(q, base, align);
+
+	q = smb_io_unihdr(io, &(hdr2->unihdr), q, base, align);
+	RW_IVAL(io, q, hdr2->undoc_buffer, 0); q += 4;
+
+	return q;
+}
+
+/*******************************************************************
+reads or writes a UNISTR structure.
+XXXX NOTE: UNISTR structures NEED to be null-terminated.
+********************************************************************/
+char* smb_io_unistr(BOOL io, UNISTR *uni, char *q, char *base, int align)
+{
+	if (uni == NULL) return NULL;
+
+	q = align_offset(q, base, align);
+	
+	if (io)
+	{
+		/* io True indicates read _from_ the SMB buffer into the string */
+		q += 2 * unistrcpy((char*)uni->buffer, q);
+	}
+	else
+	{
+		/* io True indicates copy _from_ the string into SMB buffer */
+		q += 2 * unistrcpy(q, (char*)uni->buffer);
+	}
+	return q;
+}
+
+/*******************************************************************
+reads or writes a UNISTR2 structure.
+XXXX NOTE: UNISTR2 structures need NOT be null-terminated.
+     the uni_str_len member tells you how long the string is;
+     the uni_max_len member tells you how large the buffer is.
+********************************************************************/
+char* smb_io_unistr2(BOOL io, UNISTR2 *uni2, char *q, char *base, int align)
+{
+	if (uni2 == NULL) return NULL;
+
+	q = align_offset(q, base, align);
+	
+	/* should be value 0, so enforce it. */
+	uni2->undoc = 0;
+
+	RW_IVAL(io, q, uni2->uni_max_len, 0); q += 4;
+	RW_IVAL(io, q, uni2->undoc      , 0); q += 4;
+	RW_IVAL(io, q, uni2->uni_str_len, 0); q += 4;
+
+	/* oops! XXXX maybe issue a warning that this is happening... */
+	if (uni2->uni_max_len > MAX_UNISTRLEN) uni2->uni_max_len = MAX_UNISTRLEN;
+	if (uni2->uni_str_len > MAX_UNISTRLEN) uni2->uni_str_len = MAX_UNISTRLEN;
+
+	/* buffer advanced by indicated length of string
+       NOT by searching for null-termination */
+	RW_PSVAL(io, q, uni2->buffer, uni2->uni_max_len); q += uni2->uni_max_len * 2;
+
+	return q;
+}
+
+/*******************************************************************
+reads or writes a DOM_SID2 structure.
+********************************************************************/
+char* smb_io_dom_sid2(BOOL io, DOM_SID2 *sid2, char *q, char *base, int align)
+{
+	if (sid2 == NULL) return NULL;
+
+	q = align_offset(q, base, align);
+	
+	/* should be value 5, so enforce it */
+	sid2->type = 5;
+
+	/* should be value 0, so enforce it */
+	sid2->undoc = 0;
+
+	RW_IVAL(io, q, sid2->type , 0); q += 4;
+	RW_IVAL(io, q, sid2->undoc, 0); q += 4;
+
+	q = smb_io_unihdr2(io, &(sid2->hdr), q, base, align);
+	q = smb_io_unistr (io, &(sid2->str), q, base, align);
+
+	return q;
+}
+
+/*******************************************************************
+reads or writes a DOM_RID2 structure.
+********************************************************************/
+char* smb_io_dom_rid2(BOOL io, DOM_RID2 *rid2, char *q, char *base, int align)
+{
+	if (rid2 == NULL) return NULL;
+
+	q = align_offset(q, base, align);
+	
+	/* should be value 5, so enforce it */
+	rid2->type = 5;
+
+	/* should be value 5, so enforce it */
+	rid2->undoc = 5;
+
+	RW_IVAL(io, q, rid2->type, 0); q += 4;
+	RW_IVAL(io, q, rid2->undoc   , 0); q += 4;
+	RW_IVAL(io, q, rid2->rid     , 0); q += 4;
+	RW_IVAL(io, q, rid2->rid_idx , 0); q += 4;
+
+	return q;
+}
+
+/*******************************************************************
+reads or writes a DOM_LOG_INFO structure.
+********************************************************************/
+char* smb_io_log_info(BOOL io, DOM_LOG_INFO *log, char *q, char *base, int align)
+{
+	if (log == NULL) return NULL;
+
+	q = align_offset(q, base, align);
+	
+	RW_IVAL(io, q, log->undoc_buffer, 0); q += 4;
+
+	q = smb_io_unistr2(io, &(log->uni_logon_srv), q, base, align);
+	q = smb_io_unistr2(io, &(log->uni_acct_name), q, base, align);
+
+	RW_SVAL(io, q, log->sec_chan, 0); q += 2;
+
+	/* XXXX no alignment required between sec_chan and uni_comp_name */
+	q = smb_io_unistr2(io, &(log->uni_comp_name), q, base, 0);
+
+	return q;
+}
+
+/*******************************************************************
+reads or writes a DOM_CRED structure.
+********************************************************************/
+char* smb_io_cred(BOOL io, DOM_CRED *cred, char *q, char *base, int align)
+{
+	if (cred == NULL) return NULL;
+
+	q = align_offset(q, base, align);
+	
+	RW_PCVAL(io, q, cred->data, 8); q += 8;
+	RW_IVAL (io, q, cred->timestamp, 0); q += 4;
+
+	return q;
+}
+
+/*******************************************************************
+reads or writes a DOM_CLNT_INFO structure.
+********************************************************************/
+char* smb_io_clnt_info(BOOL io, DOM_CLNT_INFO *clnt, char *q, char *base, int align)
+{
+	if (clnt == NULL) return NULL;
+
+	q = align_offset(q, base, align);
+	
+	q = smb_io_log_info(io, &(clnt->login), q, base, align);
+	q = smb_io_cred    (io, &(clnt->cred ), q, base, align);
+
+	return q;
+}
+
+/*******************************************************************
+reads or writes a DOM_LOGON_ID structure.
+********************************************************************/
+char* smb_io_logon_id(BOOL io, DOM_LOGON_ID *log, char *q, char *base, int align)
+{
+	if (log == NULL) return NULL;
+
+	q = align_offset(q, base, align);
+	
+	RW_IVAL(io, q, log->low , 0); q += 4;
+	RW_IVAL(io, q, log->high, 0); q += 4;
+
+	return q;
+}
+
+/*******************************************************************
+reads or writes an RC4_OWF structure.
+********************************************************************/
+char* smb_io_rc4_owf(BOOL io, RC4_OWF *hash, char *q, char *base, int align)
+{
+	if (hash == NULL) return NULL;
+
+	q = align_offset(q, base, align);
+	
+	RW_PCVAL(io, q, hash->data, 16); q += 16;
+
+	return q;
+}
+
+/*******************************************************************
+reads or writes an DOM_ID_INFO_1 structure.
+********************************************************************/
+char* smb_io_id_info1(BOOL io, DOM_ID_INFO_1 *id, char *q, char *base, int align)
+{
+	if (id == NULL) return NULL;
+
+	q = align_offset(q, base, align);
+	
+	q = smb_io_unihdr(io, &(id->hdr_domain_name   ), q, base, align);
+
+	RW_IVAL(io, q, id->param, 0); q += 4;
+	q = smb_io_logon_id(io, &(id->logon_id), q, base, align);
+
+	q = smb_io_unihdr(io, &(id->hdr_user_name     ), q, base, align);
+	q = smb_io_unihdr(io, &(id->hdr_workgroup_name), q, base, align);
+
+	q = smb_io_rc4_owf(io, &(id->rc4_lm_owf), q, base, align);
+	q = smb_io_rc4_owf(io, &(id->rc4_nt_owf), q, base, align);
+
+	q = smb_io_unistr2(io, &(id->uni_domain_name   ), q, base, align);
+	q = smb_io_unistr2(io, &(id->uni_user_name     ), q, base, align);
+	q = smb_io_unistr2(io, &(id->uni_workgroup_name), q, base, align);
+
+	return q;
+}
+
+/*******************************************************************
+reads or writes a DOM_SAM_INFO structure.
+********************************************************************/
+char* smb_io_sam_info(BOOL io, DOM_SAM_INFO *sam, char *q, char *base, int align)
+{
+	if (sam == NULL) return NULL;
+
+	q = align_offset(q, base, align);
+	
+	q = smb_io_clnt_info(io, &(sam->client  ), q, base, align);
+	q = smb_io_cred     (io, &(sam->rtn_cred), q, base, align);
+
+	RW_IVAL(io, q, sam->logon_level, 0); q += 4;
+	RW_SVAL(io, q, sam->auth_level , 0); q += 4;
+
+	switch (sam->auth_level)
+	{
+		case 1:
+		{
+			q = smb_io_id_info1(io, &(sam->auth.id1), q, base, align);
+			break;
+		}
+		default:
+		{
+			/* PANIC! */
+			break;
+		}
+	}
+	return q;
+}
+
+/*******************************************************************
+reads or writes a DOM_GID structure.
+********************************************************************/
+char* smb_io_gid(BOOL io, DOM_GID *gid, char *q, char *base, int align)
+{
+	if (gid == NULL) return NULL;
+
+	q = align_offset(q, base, align);
+	
+	RW_IVAL(io, q, gid->gid , 0); q += 4;
+	RW_IVAL(io, q, gid->attr, 0); q += 4;
+
+	return q;
+}
+
+#if 0
+/*******************************************************************
+reads or writes a structure.
+********************************************************************/
+ char* smb_io_(BOOL io, *, char *q, char *base, int align)
+{
+	if (== NULL) return NULL;
+
+	q = align_offset(q, base, align);
+	
+	RW_IVAL(io, q, , 0); q += 4;
+
+	return q;
+}
+
+/*******************************************************************
+reads or writes a structure.
+********************************************************************/
+ char* smb_io_(BOOL io, *, char *q, char *base, int align)
+{
+	if (== NULL) return NULL;
+
+	q = align_offset(q, base, align);
+	
+	RW_IVAL(io, q, , 0); q += 4;
+
+	return q;
+}
+#endif