1 /* $Cambridge: exim/src/src/auths/get_data.c,v 1.6 2009/11/16 19:50:38 nm4 Exp $ */
3 /*************************************************
4 * Exim - an Internet mail transport agent *
5 *************************************************/
7 /* Copyright (c) University of Cambridge 1995 - 2009 */
8 /* See the file NOTICE for conditions of use and distribution. */
13 /*************************************************
14 * Issue a challenge and get a response *
15 *************************************************/
17 /* This function is used by authentication drivers to output a challenge
18 to the SMTP client and read the response line.
21 aptr set to point to the response (which is in big_buffer)
22 challenge the challenge text (unencoded, may be binary)
23 challen the length of the challenge text
25 Returns: OK on success
26 BAD64 if response too large for buffer
27 CANCELLED if response is "*"
31 auth_get_data(uschar
**aptr
, uschar
*challenge
, int challen
)
35 smtp_printf("334 %s\r\n", auth_b64encode(challenge
, challen
));
36 while ((c
= receive_getc()) != '\n' && c
!= EOF
)
38 if (p
>= big_buffer_size
- 1) return BAD64
;
41 if (p
> 0 && big_buffer
[p
-1] == '\r') p
--;
43 DEBUG(D_receive
) debug_printf("SMTP<< %s\n", big_buffer
);
44 if (Ustrcmp(big_buffer
, "*") == 0) return CANCELLED
;
49 /* End of get_data.c */