samba-mirror/source3/rpc_parse/parse_eventlog.c

/* 
 *  Unix SMB/CIFS implementation.
 *  RPC Pipe client / server routines
 *  Copyright (C) Marcin Krzysztof Porwit    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"

#undef DBGC_CLASS
#define DBGC_CLASS DBGC_RPC_PARSE

/*
 * called from eventlog_q_open_eventlog (srv_eventlog.c)
 */

BOOL eventlog_io_q_open_eventlog(const char *desc, EVENTLOG_Q_OPEN_EVENTLOG *q_u,
				 prs_struct *ps, int depth)
{
	if(q_u == NULL)
		return False;
    
    /** Data format seems to be:
       UNKNOWN structure
         uint32            unknown
         uint16            unknown
         uint16            unknown
       Eventlog name
         uint16            eventlog name length
         uint16            eventlog name size
         Character Array
	   uint32          unknown
	   uint32          max count
           uint32          offset
           uint32          actual count
	   UNISTR2         log file name
       Server Name
         uint16            server name length
         uint16            server name size
	 Character Array
	   UNISTR2         server name
    */

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

	if(!prs_align(ps))
		return False;

	/* Munch unknown bits */

	if(!prs_uint32("", ps, depth, &q_u->unknown1))
		return False;
	if(!prs_uint16("", ps, depth, &q_u->unknown2))
		return False;
	if(!prs_uint16("", ps, depth, &q_u->unknown3))
		return False;
	if(!prs_align(ps))
		return False;

	/* Get name of log source */

	if(!prs_uint16("sourcename_length", ps, depth, &q_u->sourcename_length))
		return False;
	if(!prs_uint16("sourcename_size", ps, depth, &q_u->sourcename_size))
		return False;
	if(!prs_uint32("sourcename_ptr", ps, depth, &q_u->sourcename_ptr))
		return False;
	if(!smb_io_unistr2("", &q_u->sourcename, q_u->sourcename_ptr, ps, depth))
		return False;
	if(!prs_align(ps))
		return False;

	/* Get server name */

	if(!prs_uint32("servername_ptr", ps, depth, &q_u->servername_ptr))
		return False;
	if(!smb_io_unistr2("", &q_u->servername, q_u->servername_ptr, ps, depth))
		return False;

	return True;
}

BOOL eventlog_io_r_open_eventlog(const char *desc, EVENTLOG_R_OPEN_EVENTLOG *r_u,
				 prs_struct *ps, int depth)
{
	if(r_u == NULL)
		return False;

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

	if(!prs_align(ps))
		return False;

	if(!(smb_io_pol_hnd("log handle", &(r_u->handle), ps, depth)))
		return False;

	if(!(prs_werror("status code", ps, depth, &(r_u->status))))
		return False;

	return True;
}

BOOL eventlog_io_q_get_num_records(const char *desc, EVENTLOG_Q_GET_NUM_RECORDS *q_u,
				   prs_struct *ps, int depth)
{
	if(q_u == NULL)
		return False;

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

	if(!(prs_align(ps)))
		return False;

	if(!(smb_io_pol_hnd("log handle", &(q_u->handle), ps, depth)))
		return False;
    
	return True;
}

BOOL eventlog_io_r_get_num_records(const char *desc, EVENTLOG_R_GET_NUM_RECORDS *r_u,
				   prs_struct *ps, int depth)
{
	if(r_u == NULL)
		return False;

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

	if(!(prs_align(ps)))
		return False;

	if(!(prs_uint32("num records", ps, depth, &(r_u->num_records))))
		return False;

	if(!(prs_werror("status code", ps, depth, &(r_u->status))))
		return False;

	return True;
}

BOOL eventlog_io_q_get_oldest_entry(const char *desc, EVENTLOG_Q_GET_OLDEST_ENTRY *q_u,
				    prs_struct *ps, int depth)
{
	if(q_u == NULL)
		return False;

	prs_debug(ps, depth, desc, "eventlog_io_q_get_oldest_entry");
	depth++;
    
	if(!(prs_align(ps)))
		return False;

	if(!(smb_io_pol_hnd("log handle", &(q_u->handle), ps, depth)))
		return False;

	return True;
}

BOOL eventlog_io_r_get_oldest_entry(const char *desc, EVENTLOG_R_GET_OLDEST_ENTRY *r_u,
				    prs_struct *ps, int depth)
{
	if(r_u == NULL)
		return False;

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

	if(!(prs_align(ps)))
		return False;

	if(!(prs_uint32("oldest entry", ps, depth, &(r_u->oldest_entry))))
		return False;

	if(!(prs_werror("status code", ps, depth, &(r_u->status))))
		return False;

	return True;
}

BOOL eventlog_io_q_close_eventlog(const char *desc, EVENTLOG_Q_CLOSE_EVENTLOG *q_u,
				  prs_struct *ps, int depth)
{
	if(q_u == NULL)
		return False;

	prs_debug(ps, depth, desc, "eventlog_io_q_close_eventlog");
	depth++;
    
	if(!(prs_align(ps)))
		return False;

	if(!(smb_io_pol_hnd("log handle", &(q_u->handle), ps, depth)))
		return False;

	return True;
}

BOOL eventlog_io_r_close_eventlog(const char *desc, EVENTLOG_R_CLOSE_EVENTLOG *r_u,
				  prs_struct *ps, int depth)
{
	if(r_u == NULL)
		return False;

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

	if(!(prs_align(ps)))
		return False;

	if(!(smb_io_pol_hnd("log handle", &(r_u->handle), ps, depth)))
		return False;

	if(!(prs_werror("status code", ps, depth, &(r_u->status))))
		return False;

	return True;
}

BOOL eventlog_io_q_read_eventlog(const char *desc, EVENTLOG_Q_READ_EVENTLOG *q_u,
				 prs_struct *ps, int depth)
{
	if(q_u == NULL)
		return False;

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

	if(!(prs_align(ps)))
		return False;

	if(!(smb_io_pol_hnd("log handle", &(q_u->handle), ps, depth)))
		return False;

	if(!(prs_uint32("read flags", ps, depth, &(q_u->flags))))
		return False;

	if(!(prs_uint32("read offset", ps, depth, &(q_u->offset))))
		return False;

	if(!(prs_uint32("read buf size", ps, depth, &(q_u->max_read_size))))
		return False;

	return True;
}
/** Structure of response seems to be:
   DWORD num_bytes_in_resp -- MUST be the same as q_u->max_read_size
   for i=0..n
       EVENTLOGRECORD record
   DWORD sent_size -- sum of EVENTLOGRECORD lengths if records returned, 0 otherwise
   DWORD real_size -- 0 if records returned, otherwise length of next record to be returned
   WERROR status */
BOOL eventlog_io_r_read_eventlog(const char *desc,
				 EVENTLOG_Q_READ_EVENTLOG *q_u,
				 EVENTLOG_R_READ_EVENTLOG *r_u,
				 prs_struct *ps,
				 int depth)
{
	Eventlog_entry *entry;
	uint32 record_written = 0;
	uint32 record_total = 0;

	if(r_u == NULL)
		return False;

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

	/* First, see if we've read more logs than we can output */

	if(r_u->num_bytes_in_resp > q_u->max_read_size) {
		entry = r_u->entry;

		/* remove the size of the last entry from the list */

		while(entry->next != NULL)
			entry = entry->next;

		r_u->num_bytes_in_resp -= entry->record.length;

		/* do not output the last log entry */
	
		r_u->num_records--;
	}
    
	entry = r_u->entry;
	record_total = r_u->num_records;

	if(r_u->num_bytes_in_resp != 0)
		r_u->sent_size = r_u->num_bytes_in_resp;
	else
		r_u->real_size = r_u->bytes_in_next_record;

	if(!(prs_align(ps)))
		return False;
	if(!(prs_uint32("bytes in resp", ps, depth, &(q_u->max_read_size))))
		return False;

	while(entry != NULL && record_written < record_total)
	{
		DEBUG(10, ("eventlog_io_r_read_eventlog: writing record [%d] out of [%d].\n", record_written, record_total));

		/* Encode the actual eventlog record record */

		if(!(prs_uint32("length", ps, depth, &(entry->record.length))))
			return False;
		if(!(prs_uint32("reserved", ps, depth, &(entry->record.reserved1))))
			return False;
		if(!(prs_uint32("record number", ps, depth, &(entry->record.record_number))))
			return False;
		if(!(prs_uint32("time generated", ps, depth, &(entry->record.time_generated))))
			return False;
		if(!(prs_uint32("time written", ps, depth, &(entry->record.time_written))))
			return False;
		if(!(prs_uint32("event id", ps, depth, &(entry->record.event_id))))
			return False;
		if(!(prs_uint16("event type", ps, depth, &(entry->record.event_type))))
			return False;
		if(!(prs_uint16("num strings", ps, depth, &(entry->record.num_strings))))
			return False;
		if(!(prs_uint16("event category", ps, depth, &(entry->record.event_category))))
			return False;
		if(!(prs_uint16("reserved2", ps, depth, &(entry->record.reserved2))))
			return False;
		if(!(prs_uint32("closing record", ps, depth, &(entry->record.closing_record_number))))
			return False;
		if(!(prs_uint32("string offset", ps, depth, &(entry->record.string_offset))))
			return False;
		if(!(prs_uint32("user sid length", ps, depth, &(entry->record.user_sid_length))))
			return False;
		if(!(prs_uint32("user sid offset", ps, depth, &(entry->record.user_sid_offset))))
			return False;
		if(!(prs_uint32("data length", ps, depth, &(entry->record.data_length))))
			return False;
		if(!(prs_uint32("data offset", ps, depth, &(entry->record.data_offset))))
			return False;
		if(!(prs_align(ps)))
			return False;
	
		/* Now encoding data */

		if(!(prs_uint8s(False, "buffer", ps, depth, entry->data, 
			entry->record.length - sizeof(Eventlog_record) - sizeof(entry->record.length))))
		{
			return False;
		}

		if(!(prs_align(ps)))
			return False;
		if(!(prs_uint32("length 2", ps, depth, &(entry->record.length))))
			return False;

		entry = entry->next;
		record_written++;

	} 	/* end of encoding EVENTLOGRECORD */

	/* Now pad with whitespace until the end of the response buffer */

	r_u->end_of_entries_padding =
		SMB_CALLOC_ARRAY(uint8,
				 q_u->max_read_size - r_u->num_bytes_in_resp);

	if(!(prs_uint8s(False, "end of entries padding", ps, 
		depth, r_u->end_of_entries_padding,
		(q_u->max_read_size - r_u->num_bytes_in_resp))))
	{
		return False;
	}

	free(r_u->end_of_entries_padding);

	/* We had better be DWORD aligned here */

	if(!(prs_uint32("sent size", ps, depth, &(r_u->sent_size))))
		return False;
	if(!(prs_uint32("real size", ps, depth, &(r_u->real_size))))
		return False;
	if(!(prs_werror("status code", ps, depth, &(r_u->status))))
		return False;

	return True;
}

/** The windows client seems to be doing something funny with the file name
   A call like
      ClearEventLog(handle, "backup_file")
   on the client side will result in the backup file name looking like this on the
   server side:
      \??\${CWD of client}\backup_file
   If an absolute path gets specified, such as
      ClearEventLog(handle, "C:\\temp\\backup_file")
   then it is still mangled by the client into this:
      \??\C:\temp\backup_file
   when it is on the wire.
   I'm not sure where the \?? is coming from, or why the ${CWD} of the client process
   would be added in given that the backup file gets written on the server side. */

BOOL eventlog_io_q_clear_eventlog(const char *desc, EVENTLOG_Q_CLEAR_EVENTLOG *q_u,
				  prs_struct *ps, int depth)
{
	if(q_u == NULL)
		return False;

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

	if(!prs_align(ps))
		return False;
	if(!(smb_io_pol_hnd("log handle", &(q_u->handle), ps, depth)))
		return False;
	if(!prs_align(ps))
		return False;
	if(!(prs_uint32("unknown1", ps, depth, &q_u->unknown1)))
		return False;
	if(!(prs_uint16("backup_file_length", ps, depth, &q_u->backup_file_length)))
		return False;
	if(!(prs_uint16("backup_file_size", ps, depth, &q_u->backup_file_size)))
		return False;
	if(!prs_uint32("backup_file_ptr", ps, depth, &q_u->backup_file_ptr))
		return False;
	if(!smb_io_unistr2("backup file", &q_u->backup_file, q_u->backup_file_ptr, ps, depth))
		return False;

	return True;

}

BOOL eventlog_io_r_clear_eventlog(const char *desc, EVENTLOG_R_CLEAR_EVENTLOG *r_u,
				  prs_struct *ps, int depth)
{
	if(r_u == NULL)
		return False;

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

	if(!prs_align(ps))
		return False;
	if(!(prs_werror("status code", ps, depth, &(r_u->status))))
		return False;

	return True;
}