X-Git-Url: https://vcs.fsf.org/?a=blobdiff_plain;f=src%2Fsrc%2Ftls.c;h=0625c48b84d93dda9c3f08aa852b9a4b876f3385;hb=bb7b9411e1b4f95418bed7b35035186e261063a6;hp=92a36332d12d6c21099b43a307611ea6a1c20d61;hpb=c4ceed07f17f67af7d96e7fd27c92eb374e62e19;p=exim.git

diff --git a/src/src/tls.c b/src/src/tls.c
index 92a36332d..0625c48b8 100644
--- a/src/src/tls.c
+++ b/src/src/tls.c
@@ -30,15 +30,19 @@ static void dummy(int x) { dummy(x-1); }
 #else
 
 /* Static variables that are used for buffering data by both sets of
-functions and the common functions below. */
+functions and the common functions below.
 
+We're moving away from this; GnuTLS is already using a state, which
+can switch, so we can do TLS callouts during ACLs. */
 
-static uschar *ssl_xfer_buffer = NULL;
 static const int ssl_xfer_buffer_size = 4096;
+#ifndef USE_GNUTLS
+static uschar *ssl_xfer_buffer = NULL;
 static int ssl_xfer_buffer_lwm = 0;
 static int ssl_xfer_buffer_hwm = 0;
 static int ssl_xfer_eof = 0;
 static int ssl_xfer_error = 0;
+#endif
 
 uschar *tls_channelbinding_b64 = NULL;
 
@@ -81,6 +85,13 @@ return TRUE;
 
 #ifdef USE_GNUTLS
 #include "tls-gnu.c"
+
+#define ssl_xfer_buffer (state_server.xfer_buffer)
+#define ssl_xfer_buffer_lwm (state_server.xfer_buffer_lwm)
+#define ssl_xfer_buffer_hwm (state_server.xfer_buffer_hwm)
+#define ssl_xfer_eof (state_server.xfer_eof)
+#define ssl_xfer_error (state_server.xfer_error)
+
 #else
 #include "tls-openssl.c"
 #endif
@@ -93,6 +104,7 @@ return TRUE;
 
 /* Puts a character back in the input buffer. Only ever
 called once.
+Only used by the server-side TLS.
 
 Arguments:
   ch           the character
@@ -114,6 +126,7 @@ return ch;
 *************************************************/
 
 /* Tests for a previous EOF
+Only used by the server-side TLS.
 
 Arguments:     none
 Returns:       non-zero if the eof flag is set
@@ -133,6 +146,7 @@ return ssl_xfer_eof;
 
 /* Tests for a previous read error, and returns with errno
 restored to what it was when the error was detected.
+Only used by the server-side TLS.
 
 >>>>> Hmm. Errno not handled yet. Where do we get it from?  >>>>>
 
@@ -152,6 +166,7 @@ return ssl_xfer_error;
 *************************************************/
 
 /* Tests for unused chars in the TLS input buffer.
+Only used by the server-side TLS.
 
 Arguments:     none
 Returns:       TRUE/FALSE