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[exim.git] / src / src / auths / get_no64_data.c

diff --git a/src/src/auths/get_no64_data.c b/src/src/auths/get_no64_data.c
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+++ b/src/src/auths/get_no64_data.c
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+/* $Cambridge: exim/src/src/auths/get_no64_data.c,v 1.1 2004/10/07 13:10:01 ph10 Exp $ */
+
+/*************************************************
+*     Exim - an Internet mail transport agent    *
+*************************************************/
+
+/* Copyright (c) University of Cambridge 1995 - 2004 */
+/* See the file NOTICE for conditions of use and distribution. */
+
+#include "../exim.h"
+
+
+/*************************************************
+*  Issue a non-b64 challenge and get a response  *
+*************************************************/
+
+/* This function is used by authentication drivers to output a challenge
+to the SMTP client and read the response line. This version does not use base
+64 encoding for the text on the 334 line. It is used by the SPA authenticator.
+
+Arguments:
+   aptr       set to point to the response (which is in big_buffer)
+   challenge  the challenge text (unencoded)
+
+Returns:      OK on success
+              BAD64 if response too large for buffer
+              CANCELLED if response is "*"
+*/
+
+int
+auth_get_no64_data(uschar **aptr, uschar *challenge)
+{
+int c;
+int p = 0;
+smtp_printf("334 %s\r\n", challenge);
+while ((c = receive_getc()) != '\n' && c != EOF)
+  {
+  if (p >= big_buffer_size - 1) return BAD64;
+  big_buffer[p++] = c;
+  }
+if (p > 0 && big_buffer[p-1] == '\r') p--;
+big_buffer[p] = 0;
+if (Ustrcmp(big_buffer, "*") == 0) return CANCELLED;
+*aptr = big_buffer;
+return OK;
+}
+
+/* End of get_no64_data.c */