static int smtp_open (CONNECTION* conn)
{
int rc;
if (mutt_socket_open (conn))
return -1;
/* get greeting string */
if ((rc = smtp_get_resp (conn)))
return rc;
if ((rc = smtp_helo (conn)))
return rc;
#ifdef USE_SSL
if (conn->ssf)
rc = M_NO;
else if (option (OPTSSLFORCETLS))
rc = M_YES;
else if (mutt_bit_isset (Capabilities, STARTTLS) &&
(rc = query_quadoption (OPT_SSLSTARTTLS,
_("Secure connection with TLS?"))) == -1)
return rc;
if (rc == M_YES) {
if (mutt_socket_write (conn, "STARTTLS\r\n") < 0)
return smtp_err_write;
if ((rc = smtp_get_resp (conn)))
return rc;
if (mutt_ssl_starttls (conn)) {
mutt_error (_("Could not negotiate TLS connection"));
mutt_sleep (1);
return -1;
}
/* re-EHLO to get authentication mechanisms */
if ((rc = smtp_helo (conn)))
return rc;
}
#endif
if (conn->account.flags & M_ACCT_USER) {
if (!mutt_bit_isset (Capabilities, AUTH)) {
mutt_error (_("SMTP server does not support authentication"));
mutt_sleep (1);
return -1;
}
#ifdef USE_SASL
return smtp_auth (conn);
#else
mutt_error (_("SMTP authentication requires SASL"));
mutt_sleep (1);
return -1;
#endif /* USE_SASL */
}
return 0;
}
/*
* Open connection and authenticate
* 0 - successful,
* -1 - conection lost,
* -2 - invalid command or execution error,
* -3 - authentication canceled.
*/
int pop_open_connection (POP_DATA *pop_data)
{
int ret;
unsigned int n, size;
char buf[LONG_STRING];
ret = pop_connect (pop_data);
if (ret < 0)
{
mutt_sleep (2);
return ret;
}
ret = pop_capabilities (pop_data, 0);
if (ret == -1)
goto err_conn;
if (ret == -2)
{
mutt_sleep (2);
return -2;
}
#if defined(USE_SSL)
/* Attempt STLS if available and desired. */
if (!pop_data->conn->ssf && (pop_data->cmd_stls || option(OPTSSLFORCETLS)))
{
if (option(OPTSSLFORCETLS))
pop_data->use_stls = 2;
if (pop_data->use_stls == 0)
{
ret = query_quadoption (OPT_SSLSTARTTLS,
_("Secure connection with TLS?"));
if (ret == -1)
return -2;
pop_data->use_stls = 1;
if (ret == M_YES)
pop_data->use_stls = 2;
}
if (pop_data->use_stls == 2)
{
strfcpy (buf, "STLS\r\n", sizeof (buf));
ret = pop_query (pop_data, buf, sizeof (buf));
if (ret == -1)
goto err_conn;
if (ret != 0)
{
mutt_error ("%s", pop_data->err_msg);
mutt_sleep (2);
}
else if (mutt_ssl_starttls (pop_data->conn))
{
mutt_error (_("Could not negotiate TLS connection"));
mutt_sleep (2);
return -2;
}
else
{
/* recheck capabilities after STLS completes */
ret = pop_capabilities (pop_data, 1);
if (ret == -1)
goto err_conn;
if (ret == -2)
{
mutt_sleep (2);
return -2;
}
}
}
}
if (option(OPTSSLFORCETLS) && !pop_data->conn->ssf)
{
mutt_error _("Encrypted connection unavailable");
mutt_sleep (1);
return -2;
}
#endif
ret = pop_authenticate (pop_data);
if (ret == -1)
goto err_conn;
if (ret == -3)
mutt_clear_error ();
if (ret != 0)
return ret;
/* recheck capabilities after authentication */
ret = pop_capabilities (pop_data, 2);
if (ret == -1)
goto err_conn;
if (ret == -2)
{
mutt_sleep (2);
return -2;
}
/* get total size of mailbox */
strfcpy (buf, "STAT\r\n", sizeof (buf));
ret = pop_query (pop_data, buf, sizeof (buf));
if (ret == -1)
goto err_conn;
if (ret == -2)
{
mutt_error ("%s", pop_data->err_msg);
mutt_sleep (2);
return ret;
}
sscanf (buf, "+OK %u %u", &n, &size);
pop_data->size = size;
return 0;
err_conn:
pop_data->status = POP_DISCONNECTED;
mutt_error _("Server closed connection!");
mutt_sleep (2);
return -1;
}
