Avoid calling gettimeofday(), select() per char for cmdline message submission. ...

[exim.git] / src / src / tls-gnu.c

diff --git a/src/src/tls-gnu.c b/src/src/tls-gnu.c
index 618caf6a225f19b35fb4780aff6d7b6df5b34231..c6625c0600b9d02f85a0941940f924a2c473049c 100644 (file)
--- a/src/src/tls-gnu.c
+++ b/src/src/tls-gnu.c
@@ -1079,7 +1079,8 @@ static int
 tls_server_clienthello_ext(void * ctx, unsigned tls_id,
   const uschar * data, unsigned size)
 {
-/* https://www.iana.org/assignments/tls-extensiontype-values/tls-extensiontype-values.xhtml */
+/* The values for tls_id are documented here:
+https://www.iana.org/assignments/tls-extensiontype-values/tls-extensiontype-values.xhtml */
 switch (tls_id)
   {
   case 5:      /* Status Request */
@@ -3137,6 +3138,7 @@ state->xfer_buffer = store_malloc(ssl_xfer_buffer_size);
 receive_getc = tls_getc;
 receive_getbuf = tls_getbuf;
 receive_get_cache = tls_get_cache;
+receive_hasc = tls_hasc;
 receive_ungetc = tls_ungetc;
 receive_feof = tls_feof;
 receive_ferror = tls_ferror;
@@ -3739,6 +3741,7 @@ if (!ct_ctx)      /* server */
   receive_getc =       smtp_getc;
   receive_getbuf =     smtp_getbuf;
   receive_get_cache =  smtp_get_cache;
+  receive_hasc =       smtp_hasc;
   receive_ungetc =     smtp_ungetc;
   receive_feof =       smtp_feof;
   receive_ferror =     smtp_ferror;
@@ -3853,6 +3856,13 @@ if (state->xfer_buffer_lwm >= state->xfer_buffer_hwm)
 return state->xfer_buffer[state->xfer_buffer_lwm++];
 }
 
+BOOL
+tls_hasc(void)
+{
+exim_gnutls_state_st * state = &state_server;
+return state->xfer_buffer_lwm < state->xfer_buffer_hwm;
+}
+
 uschar *
 tls_getbuf(unsigned * len)
 {
@@ -3877,12 +3887,15 @@ return buf;
 }
 
 
+/* Get up to the given number of bytes from any cached data, and feed to dkim. */
 void
-tls_get_cache(void)
+tls_get_cache(unsigned lim)
 {
 #ifndef DISABLE_DKIM
 exim_gnutls_state_st * state = &state_server;
 int n = state->xfer_buffer_hwm - state->xfer_buffer_lwm;
+if (n > lim)
+  n = lim;
 if (n > 0)
   dkim_exim_verify_feed(state->xfer_buffer+state->xfer_buffer_lwm, n);
 #endif