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/*
Unix SMB/Netbios implementation.
Version 1.9.
Samba connection status utility functions
Copyright (C) Andrew Tridgell 1992-1999
Copyright (C) Michael Glauche 1999
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;
/*******************************************************************
parse the STATUS..LCK file. caller is responsible for freeing *crec.
********************************************************************/
BOOL get_connection_status(struct connect_record **crec,
uint32 *connection_count)
{
int fd;
pstring fname;
int conn;
int num_recs;
struct connect_record *c;
int i;
if (crec == NULL || connection_count == NULL)
{
return False;
}
pstrcpy(fname,lp_lockdir());
standard_sub_basic(fname);
trim_string(fname,"","/");
pstrcat(fname,"/STATUS..LCK");
fd = sys_open(fname,O_RDONLY, 0);
if (fd == -1)
{
DEBUG(0,("Couldn't open status file %s\n",fname));
return False;
}
(*crec) = NULL;
num_recs = get_file_size(fname) / sizeof(*c);
DEBUG(5,("Opened status file %s, record count %d\n",fname, num_recs));
for (i = 0, conn = 0; i < num_recs; i++)
{
(*crec) = Realloc((*crec), (conn+1) * sizeof((*crec)[conn]));
if ((*crec) == NULL)
{
DEBUG(0,("Realloc failed in get_connection_status\n"));
return False;
}
c = &((*crec)[conn]);
if (sys_lseek(fd,i*sizeof(*c),SEEK_SET) != i*sizeof(*c) ||
read(fd,c,sizeof(*c)) != sizeof(*c))
{
DEBUG(0,("unable to read a crec in get_connection_status\n"));
break;
}
DEBUG(10,("cnum:%u. pid: %d magic: %x\n",
c->cnum, c->pid, c->magic));
/* valid connection, smbd process still going, connection still going */
if ( c->magic == 0x280267 && process_exists(c->pid) && c->cnum != -1 )
{
conn++;
}
}
close(fd);
(*connection_count)=conn;
return True;
}
/*******************************************************************
Get the number of open Sessions. Not optimal yet. Has at least O(n*log(n)).
********************************************************************/
BOOL get_session_count(struct connect_record **srec,uint32 *session_count)
{
struct connect_record *crec = NULL;
struct connect_record *c;
uint32 connection_count;
uint32 conn;
int *pid;
int i;
int MaxPid;
BOOL found;
(*srec) = NULL;
pid = NULL;
if (get_connection_status(&crec, &connection_count))
{
MaxPid = 0;
for (conn = 0; conn < connection_count; conn++)
{
DEBUG(10,("Connection nr : %u\n",conn));
found=False;
for (i = 0; i < MaxPid; i++)
{
if (crec[conn].pid == pid[i])
{
found = True;
i=MaxPid;
}
}
if (!found) {
(*srec) = Realloc((*srec), (MaxPid+1) * sizeof((*srec)[MaxPid]));
if ((*srec) == NULL)
{
DEBUG(0,("Realloc failed in get_connection_status\n"));
return False;
}
pid = Realloc(pid, (MaxPid+1) * sizeof(int));
if (pid == NULL)
{
DEBUG(0,("Realloc failed in get_session_count\n"));
free(crec);
return False;
}
c = &((*srec)[MaxPid]);
pid[MaxPid]=crec[conn].pid;
pstrcpy(c->machine,crec[conn].machine);
c->uid = crec[conn].uid;
c->pid = crec[conn].pid;
c->cnum = crec[conn].cnum;
pstrcpy(c->name,crec[conn].name);
MaxPid++;
}
}
} else {
/* crec is not valid, so no need to free it here */
return False;
}
free(crec);
(*session_count) = MaxPid;
return True;
}
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