mailquota.c
2.96 KB
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/* GNU mailutils - a suite of utilities for electronic mail
Copyright (C) 1999, 2000, 2001 Free Software Foundation, Inc.
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, 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 <mail.local.h>
#ifdef USE_DBM
#define DEFRETVAL MQUOTA_UNLIMITED
size_t groupquota = 5*1024*1024UL;
static int get_size (char *, size_t *, char **);
int
get_size (char *str, size_t *size, char **endp)
{
size_t s;
s = strtol (str, &str, 0);
switch (*str)
{
case 0:
break;
case 'k':
case 'K':
s *= 1024;
break;
case 'm':
case 'M':
s *= 1024*1024;
break;
default:
*endp = str;
return -1;
}
*size = s;
return 0;
}
int
check_quota (char *name, size_t size, size_t *rest)
{
DBM_FILE db;
DBM_DATUM named, contentd;
size_t quota;
char buffer[64];
int unlimited = 0;
int rc;
if (!quotadbname || mu_dbm_open (quotadbname, &db, MU_STREAM_READ, 0600))
return DEFRETVAL;
memset (&named, 0, sizeof named);
MU_DATUM_PTR (named) = name;
MU_DATUM_SIZE (named) = strlen (name);
rc = mu_dbm_fetch (db, named, &contentd);
if (rc || !MU_DATUM_PTR (contentd))
{
/* User not in database, try default quota */
memset (&named, 0, sizeof named);
MU_DATUM_PTR (named) = "DEFAULT";
MU_DATUM_SIZE (named) = strlen ("DEFAULT");
rc = mu_dbm_fetch (db, named, &contentd);
if (rc)
{
//mu_error("can't fetch data: %s", strerror (rc));
return DEFRETVAL;
}
if (!MU_DATUM_PTR (contentd))
return DEFRETVAL;
}
if (strncasecmp("none",
MU_DATUM_PTR (contentd),
MU_DATUM_SIZE (contentd)) == 0)
unlimited = 1;
else if (MU_DATUM_SIZE (contentd) > sizeof(buffer)-1)
{
mu_error ("mailbox quota for `%s' is too big: %d digits",
name, MU_DATUM_SIZE (contentd));
quota = groupquota;
}
else
{
char *p;
strncpy(buffer, MU_DATUM_PTR (contentd), MU_DATUM_SIZE (contentd));
buffer[MU_DATUM_SIZE (contentd)] = 0;
quota = strtoul (buffer, &p, 0);
if (get_size (buffer, "a, &p))
{
mu_error ("bogus mailbox quota for `%s' (near `%s')", name, p);
quota = groupquota;
}
}
mu_dbm_close (db);
if (unlimited)
return MQUOTA_UNLIMITED;
else if (quota < size) /* Mailbox full */
return MQUOTA_EXCEEDED;
if (rest)
*rest = quota - size;
return MQUOTA_OK;
}
#endif