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/* GNU Mailutils -- a suite of utilities for electronic mail
Copyright (C) 2003 Free Software Foundation, Inc.
GNU Mailutils 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.
GNU Mailutils 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 GNU Mailutils; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
MA 02110-1301 USA */
#include "pop3d.h"
#ifdef ENABLE_LOGIN_DELAY
static int
open_stat_db (DBM_FILE *db, int mode)
{
int rc = mu_dbm_open (login_stat_file, db, mode, 0660);
if (rc)
{
if (rc == -1)
syslog (LOG_INFO, _("Bad permissions on statistics db"));
else
syslog (LOG_ERR, _("Unable to open statistics db: %s"),
mu_strerror (rc));
}
return rc;
}
int
check_login_delay (char *username)
{
time_t now, prev_time;
DBM_FILE db;
DBM_DATUM key, data;
char text[64], *p;
int rc;
if (login_delay == 0)
return 0;
time (&now);
if (open_stat_db (&db, MU_STREAM_RDWR))
return 0;
memset (&key, 0, sizeof key);
MU_DATUM_PTR(key) = username;
MU_DATUM_SIZE(key) = strlen (username);
memset (&data, 0, sizeof data);
rc = mu_dbm_fetch (db, key, &data);
if (rc)
{
syslog (LOG_ERR, _("Can't fetch APOP data: %s"), mu_strerror (rc));
mu_dbm_close (db);
return 0;
}
if (MU_DATUM_SIZE(data) > sizeof (text) - 1)
{
syslog (LOG_ERR, _("Invalid entry for '%s': wrong timestamp size"),
username);
mu_dbm_close (db);
return 0;
}
memcpy (text, MU_DATUM_PTR(data), MU_DATUM_SIZE(data));
text[MU_DATUM_SIZE(data)] = 0;
mu_dbm_close (db);
prev_time = strtoul (text, &p, 0);
if (*p)
{
syslog (LOG_ERR, _("Malformed timestamp for '%s': %s"),
username, text);
return 0;
}
return now - prev_time < login_delay;
}
void
update_login_delay (char *username)
{
time_t now;
DBM_FILE db;
DBM_DATUM key, data;
char text[64];
if (login_delay == 0 || username == NULL)
return;
time (&now);
if (open_stat_db (&db, MU_STREAM_RDWR))
return;
memset(&key, 0, sizeof(key));
memset(&data, 0, sizeof(data));
MU_DATUM_PTR(key) = username;
MU_DATUM_SIZE(key) = strlen (username);
snprintf (text, sizeof text, "%lu", (unsigned long) now);
MU_DATUM_PTR(data) = text;
MU_DATUM_SIZE(data) = strlen (text);
if (mu_dbm_insert (db, key, data, 1))
mu_error (_("%s: can't store datum %s/%s"),
login_stat_file, username, text);
mu_dbm_close (db);
}
void
login_delay_capa ()
{
DBM_FILE db;
if (login_delay && open_stat_db (&db, MU_STREAM_RDWR) == 0)
{
pop3d_outf ("LOGIN-DELAY %lu\r\n", (unsigned long)login_delay);
mu_dbm_close (db);
}
}
#endif
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