parse_eventlog.c

来自「samba-3.0.22.tar.gz 编译smb服务器的源码」· C语言 代码 · 共 432 行

/* 
 *  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

/********************************************************************
********************************************************************/

BOOL prs_ev_open_unknown0( const char *desc, prs_struct *ps, int depth, EVENTLOG_OPEN_UNKNOWN0 *u )
{
	if ( !u )
		return False;
	
	if ( !prs_uint16("", ps, depth, &u->unknown1) )
		return False;
	if ( !prs_uint16("", ps, depth, &u->unknown2) )
		return False;

	return True;
}

/********************************************************************
********************************************************************/

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

	if(!prs_align(ps))
		return False;

	if ( !prs_pointer("", ps, depth, (void**)&q_u->unknown0, sizeof(EVENTLOG_OPEN_UNKNOWN0), (PRS_POINTER_CAST)prs_ev_open_unknown0))
		return False;

	if ( !prs_unistr4("logname", ps, depth, &q_u->logname) )
		return False;
	if ( !prs_align(ps) )
		return False;

	if ( !prs_unistr4("servername", ps, depth, &q_u->servername) )
		return False;
	if ( !prs_align(ps) )
		return False;

	if ( !prs_uint32("unknown1", ps, depth, &q_u->unknown1) )
		return False;
	if ( !prs_uint32("unknown2", ps, depth, &q_u->unknown2) )
		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_ntstatus("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_ntstatus("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_ntstatus("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_ntstatus("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(11, ("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_ntstatus("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_unistr4("backupfile", ps, depth, &q_u->backupfile) )
		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_ntstatus("status code", ps, depth, &r_u->status)))
		return False;

	return True;
}