authdata.c

samba-3.0.22.tar.gz 编译smb服务器的源码

/* 
   Unix SMB/CIFS implementation.
   kerberos authorization data (PAC) utility library
   Copyright (C) Jim McDonough <[e-mail]> 2003   
   Copyright (C) Andrew Bartlett <[e-mail]> 2004-2005
   Copyright (C) Andrew Tridgell 2001
   Copyright (C) Luke Howard 2002-2003
   Copyright (C) Stefan Metzmacher 2004-2005
   Copyright (C) Guenther Deschner 2005
   
   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"

#ifdef HAVE_KRB5

static BOOL pac_io_logon_name(const char *desc, PAC_LOGON_NAME *logon_name,
			      prs_struct *ps, int depth)
{
	if (NULL == logon_name)
		return False;

	prs_debug(ps, depth, desc, "pac_io_logon_name");
	depth++;

	if (!smb_io_time("logon_time", &logon_name->logon_time, ps, depth))
		return False;

	if (!prs_uint16("len", ps, depth, &logon_name->len))
		return False;

	/* The following string is always in little endian 16 bit values,
	   copy as 8 bits to avoid endian reversal on big-endian machines.
	   len is the length in bytes. */

	if (UNMARSHALLING(ps) && logon_name->len) {
		logon_name->username = PRS_ALLOC_MEM(ps, uint8, logon_name->len);
		if (!logon_name->username) {
			DEBUG(3, ("No memory available\n"));
			return False;
		}
	}

	if (!prs_uint8s(True, "name", ps, depth, logon_name->username, logon_name->len))
		return False;

	return True;
}

#if 0 /* Unused (handled now in net_io_user_info3()) - Guenther */
static BOOL pac_io_krb_sids(const char *desc, KRB_SID_AND_ATTRS *sid_and_attr,
			    prs_struct *ps, int depth)
{
	if (NULL == sid_and_attr)
		return False;

	prs_debug(ps, depth, desc, "pac_io_krb_sids");
	depth++;

	if (UNMARSHALLING(ps)) {
		sid_and_attr->sid = PRS_ALLOC_MEM(ps, DOM_SID2, 1);
		if (!sid_and_attr->sid) {
			DEBUG(3, ("No memory available\n"));
			return False;
		}
	}

	if(!smb_io_dom_sid2("sid", sid_and_attr->sid, ps, depth))
		return False;

	return True;
}


static BOOL pac_io_krb_attrs(const char *desc, KRB_SID_AND_ATTRS *sid_and_attr,
			     prs_struct *ps, int depth)
{
	if (NULL == sid_and_attr)
		return False;

	prs_debug(ps, depth, desc, "pac_io_krb_attrs");
	depth++;

	if (!prs_uint32("sid_ptr", ps, depth, &sid_and_attr->sid_ptr))
		return False;
	if (!prs_uint32("attrs", ps, depth, &sid_and_attr->attrs))
		return False;

	return True;
}

static BOOL pac_io_krb_sid_and_attr_array(const char *desc, 
					  KRB_SID_AND_ATTR_ARRAY *array,
					  uint32 num,
					  prs_struct *ps, int depth)
{
	int i;

	if (NULL == array)
		return False;

	prs_debug(ps, depth, desc, "pac_io_krb_sid_and_attr_array");
	depth++;


	if (!prs_uint32("count", ps, depth, &array->count))
		return False;

	if (UNMARSHALLING(ps)) {
		array->krb_sid_and_attrs = PRS_ALLOC_MEM(ps, KRB_SID_AND_ATTRS, num);
		if (!array->krb_sid_and_attrs) {
			DEBUG(3, ("No memory available\n"));
			return False;
		}
	}

	for (i=0; i<num; i++) {
		if (!pac_io_krb_attrs(desc, 
				      &array->krb_sid_and_attrs[i],
				      ps, depth))
			return False;

	}
	for (i=0; i<num; i++) {
		if (!pac_io_krb_sids(desc, 
				     &array->krb_sid_and_attrs[i],
				     ps, depth))
			return False;

	}

	return True;

}
#endif

static BOOL pac_io_group_membership(const char *desc, 
				    GROUP_MEMBERSHIP *membership,
				    prs_struct *ps, int depth)
{
	if (NULL == membership)
		return False;

	prs_debug(ps, depth, desc, "pac_io_group_membership");
	depth++;

	if (!prs_uint32("rid", ps, depth, &membership->rid))
		return False;
	if (!prs_uint32("attrs", ps, depth, &membership->attrs))
		return False;

	return True;
}


static BOOL pac_io_group_membership_array(const char *desc, 
					  GROUP_MEMBERSHIP_ARRAY *array,
					  uint32 num,
					  prs_struct *ps, int depth)
{
	int i;

	if (NULL == array)
		return False;

	prs_debug(ps, depth, desc, "pac_io_group_membership_array");
	depth++;


	if (!prs_uint32("count", ps, depth, &array->count))
		return False;

	if (UNMARSHALLING(ps)) {
		array->group_membership = PRS_ALLOC_MEM(ps, GROUP_MEMBERSHIP, num);
		if (!array->group_membership) {
			DEBUG(3, ("No memory available\n"));
			return False;
		}
	}

	for (i=0; i<num; i++) {
		if (!pac_io_group_membership(desc, 
					     &array->group_membership[i],
					     ps, depth))
			return False;

	}

	return True;

}

#if 0 /* Unused, replaced using an expanded net_io_user_info3() now - Guenther */
static BOOL pac_io_pac_logon_info(const char *desc, PAC_LOGON_INFO *info, 
				  prs_struct *ps, int depth)
{
	uint32 garbage, i;

	if (NULL == info)
		return False;

	prs_debug(ps, depth, desc, "pac_io_pac_logon_info");
	depth++;

	if (!prs_align(ps))
		return False;
	if (!prs_uint32("unknown", ps, depth, &garbage)) /* 00081001 */
		return False;
	if (!prs_uint32("unknown", ps, depth, &garbage)) /* cccccccc */
		return False;
	if (!prs_uint32("bufferlen", ps, depth, &garbage))
		return False;
	if (!prs_uint32("bufferlenhi", ps, depth, &garbage)) /* 00000000 */
		return False;

	if (!prs_uint32("pointer", ps, depth, &garbage))
		return False;

	if (!prs_align(ps))
		return False;
	if (!smb_io_time("logon_time", &info->logon_time, ps, depth))
		return False;
	if (!smb_io_time("logoff_time", &info->logoff_time, ps, depth))
		return False;
	if (!smb_io_time("kickoff_time", &info->kickoff_time, ps, depth))
		return False;
	if (!smb_io_time("pass_last_set_time", &info->pass_last_set_time, 
			 ps, depth))
		return False;
	if (!smb_io_time("pass_can_change_time", &info->pass_can_change_time, 
			 ps, depth))
		return False;
	if (!smb_io_time("pass_must_change_time", &info->pass_must_change_time,
			 ps, depth))
		return False;

	if (!smb_io_unihdr("hdr_user_name", &info->hdr_user_name, ps, depth))
		return False;
	if (!smb_io_unihdr("hdr_full_name", &info->hdr_full_name, ps, depth))
		return False;
	if (!smb_io_unihdr("hdr_logon_script", &info->hdr_logon_script, 
			   ps, depth))
		return False;
	if (!smb_io_unihdr("hdr_profile_path", &info->hdr_profile_path, 
			   ps, depth))
		return False;
	if (!smb_io_unihdr("hdr_home_dir", &info->hdr_home_dir, ps, depth))
		return False;
	if (!smb_io_unihdr("hdr_dir_drive", &info->hdr_dir_drive, ps, depth))
		return False;

	if (!prs_uint16("logon_count", ps, depth, &info->logon_count))
		return False;
	if (!prs_uint16("bad_password_count", ps, depth, &info->bad_password_count))
		return False;
	if (!prs_uint32("user_rid", ps, depth, &info->user_rid))
		return False;
	if (!prs_uint32("group_rid", ps, depth, &info->group_rid))
		return False;
	if (!prs_uint32("group_count", ps, depth, &info->group_count))
		return False;
	/* I haven't seen this contain anything yet, but when it does
	   we will have to make sure we decode the contents in the middle
	   all the unistr2s ... */
	if (!prs_uint32("group_mem_ptr", ps, depth, 
			&info->group_membership_ptr))
		return False;
	if (!prs_uint32("user_flags", ps, depth, &info->user_flags))
		return False;

	if (!prs_uint8s(False, "session_key", ps, depth, info->session_key, 16)) 
		return False;
	
	if (!smb_io_unihdr("hdr_dom_controller", 
			   &info->hdr_dom_controller, ps, depth))
		return False;
	if (!smb_io_unihdr("hdr_dom_name", &info->hdr_dom_name, ps, depth))
		return False;

	/* this should be followed, but just get ptr for now */
	if (!prs_uint32("ptr_dom_sid", ps, depth, &info->ptr_dom_sid))
		return False;

	if (!prs_uint8s(False, "lm_session_key", ps, depth, info->lm_session_key, 8)) 
		return False;

	if (!prs_uint32("acct_flags", ps, depth, &info->acct_flags))
		return False;

	for (i = 0; i < 7; i++)
	{
		if (!prs_uint32("unkown", ps, depth, &info->unknown[i])) /* unknown */
                        return False;
	}

	if (!prs_uint32("sid_count", ps, depth, &info->sid_count))
		return False;
	if (!prs_uint32("ptr_extra_sids", ps, depth, &info->ptr_extra_sids))
		return False;
	if (!prs_uint32("ptr_res_group_dom_sid", ps, depth, 
			&info->ptr_res_group_dom_sid))
		return False;
	if (!prs_uint32("res_group_count", ps, depth, &info->res_group_count))
		return False;
	if (!prs_uint32("ptr_res_groups", ps, depth, &info->ptr_res_groups))
		return False;

	if(!smb_io_unistr2("uni_user_name", &info->uni_user_name, 
			   info->hdr_user_name.buffer, ps, depth))
		return False;
	if(!smb_io_unistr2("uni_full_name", &info->uni_full_name, 
			   info->hdr_full_name.buffer, ps, depth))
		return False;
	if(!smb_io_unistr2("uni_logon_script", &info->uni_logon_script, 
			   info->hdr_logon_script.buffer, ps, depth))
		return False;
	if(!smb_io_unistr2("uni_profile_path", &info->uni_profile_path,
			   info->hdr_profile_path.buffer, ps, depth))
		return False;
	if(!smb_io_unistr2("uni_home_dir", &info->uni_home_dir,
			   info->hdr_home_dir.buffer, ps, depth))
		return False;
	if(!smb_io_unistr2("uni_dir_drive", &info->uni_dir_drive,
			   info->hdr_dir_drive.buffer, ps, depth))
		return False;

	if (info->group_membership_ptr) {
		if (!pac_io_group_membership_array("group membership",
						   &info->groups,
						   info->group_count,
						   ps, depth))
			return False;
	}


	if(!smb_io_unistr2("uni_dom_controller", &info->uni_dom_controller,
			   info->hdr_dom_controller.buffer, ps, depth))
		return False;
	if(!smb_io_unistr2("uni_dom_name", &info->uni_dom_name, 
			   info->hdr_dom_name.buffer, ps, depth))
		return False;

	if(info->ptr_dom_sid)
		if(!smb_io_dom_sid2("dom_sid", &info->dom_sid, ps, depth))
			return False;

	
	if (info->sid_count && info->ptr_extra_sids)
		if (!pac_io_krb_sid_and_attr_array("extra_sids", 
						   &info->extra_sids,
						   info->sid_count,
						   ps, depth))
			return False;

	if (info->ptr_res_group_dom_sid)
		if (!smb_io_dom_sid2("res_group_dom_sid", 
				     &info->res_group_dom_sid, ps, depth))
			return False;

	if (info->ptr_res_groups) {

		if (!(info->user_flgs & LOGON_RESOURCE_GROUPS)) {
			DEBUG(0,("user_flgs attribute does not have LOGON_RESOURCE_GROUPS\n"));
			/* return False; */
		}

		if (!pac_io_group_membership_array("res group membership",
						   &info->res_groups,
						   info->res_group_count,
						   ps, depth))
			return False;
	}

	return True;
}
#endif

static BOOL pac_io_pac_logon_info(const char *desc, PAC_LOGON_INFO *info, 
				  prs_struct *ps, int depth)
{
	uint32 garbage;
	BOOL kerb_validation_info = True;

	if (NULL == info)
		return False;

	prs_debug(ps, depth, desc, "pac_io_pac_logon_info");
	depth++;

	if (!prs_align(ps))
		return False;
	if (!prs_uint32("unknown", ps, depth, &garbage)) /* 00081001 */
		return False;
	if (!prs_uint32("unknown", ps, depth, &garbage)) /* cccccccc */
		return False;
	if (!prs_uint32("bufferlen", ps, depth, &garbage))
		return False;
	if (!prs_uint32("bufferlenhi", ps, depth, &garbage)) /* 00000000 */
		return False;

	if(!net_io_user_info3("", &info->info3, ps, depth, 3, kerb_validation_info))
		return False;

	if (info->info3.ptr_res_group_dom_sid) {
		if (!smb_io_dom_sid2("res_group_dom_sid", 
				     &info->res_group_dom_sid, ps, depth))
			return False;
	}

	if (info->info3.ptr_res_groups) {

		if (!(info->info3.user_flgs & LOGON_RESOURCE_GROUPS)) {
			DEBUG(0,("user_flgs attribute does not have LOGON_RESOURCE_GROUPS\n"));
			/* return False; */
		}

		if (!pac_io_group_membership_array("res group membership",
						   &info->res_groups,
						   info->info3.res_group_count,
						   ps, depth))
			return False;
	}

	return True;
}



static BOOL pac_io_pac_signature_data(const char *desc, 
				      PAC_SIGNATURE_DATA *data, uint32 length,
				      prs_struct *ps, int depth)
{
	uint32 siglen = length - sizeof(uint32);
	prs_debug(ps, depth, desc, "pac_io_pac_signature_data");
	depth++;
	
	if (data == NULL)
		return False;

	if (!prs_align(ps))
		return False;
	if (!prs_uint32("type", ps, depth, &data->type))
		return False;

	if (UNMARSHALLING(ps) && length) {
		data->signature.buffer = PRS_ALLOC_MEM(ps, uint8, siglen);
		if (!data->signature.buffer) {
			DEBUG(3, ("No memory available\n"));
			return False;
		}
	}

	data->signature.buf_len = siglen;

	if (!prs_uint8s(False, "signature", ps, depth, data->signature.buffer, data->signature.buf_len))
		return False;


	return True;