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-rw-r--r--src/auths/get_no64_data.c47
1 files changed, 47 insertions, 0 deletions
diff --git a/src/auths/get_no64_data.c b/src/auths/get_no64_data.c
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+++ b/src/auths/get_no64_data.c
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+/*************************************************
+* Exim - an Internet mail transport agent *
+*************************************************/
+
+/* Copyright (c) University of Cambridge 1995 - 2018 */
+/* 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, dovecot
+and gsasl authenticators.
+
+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", FALSE, challenge);
+while ((c = receive_getc(GETC_BUFFER_UNLIMITED)) != '\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 */