X-Git-Url: https://git.netwichtig.de/gitweb/?a=blobdiff_plain;f=src%2Fsrc%2Fdkim_transport.c;h=28d567b035936483a111622f10dcc68bf01aa6d8;hb=9a1edd98a95b013a5130316611778fde070a5124;hp=1ef4cfa6ceb5a4a1a2782bb2f16cb2d52c5cfabb;hpb=cab0c27721a3c1f3a146e44bcc6462eefb9eb9e7;p=user%2Fhenk%2Fcode%2Fexim.git

diff --git a/src/src/dkim_transport.c b/src/src/dkim_transport.c
index 1ef4cfa6c..28d567b03 100644
--- a/src/src/dkim_transport.c
+++ b/src/src/dkim_transport.c
@@ -2,7 +2,7 @@
 *     Exim - an Internet mail transport agent    *
 *************************************************/
 
-/* Copyright (c) University of Cambridge 1995 - 2016 */
+/* Copyright (c) University of Cambridge 1995 - 2018 */
 /* See the file NOTICE for conditions of use and distribution. */
 
 /* Transport shim for dkim signing */
@@ -37,9 +37,17 @@ return TRUE;
 /* Send the file at in_fd down the output fd */
 
 static BOOL
-dkt_send_file(int out_fd, int in_fd, off_t off, size_t size)
+dkt_send_file(int out_fd, int in_fd, off_t off
+#ifdef OS_SENDFILE
+  , size_t size
+#endif
+  )
 {
+#ifdef OS_SENDFILE
 DEBUG(D_transport) debug_printf("send file fd=%d size=%u\n", out_fd, (unsigned)(size - off));
+#else
+DEBUG(D_transport) debug_printf("send file fd=%d\n", out_fd);
+#endif
 
 /*XXX should implement timeout, like transport_write_block_fd() ? */
 
@@ -117,9 +125,11 @@ dkt_direct(transport_ctx * tctx, struct ob_dkim * dkim,
 int save_fd = tctx->u.fd;
 int save_options = tctx->options;
 BOOL save_wireformat = spool_file_wireformat;
-uschar * hdrs, * dkim_signature;
-int siglen = 0, hsize;
+uschar * hdrs;
+gstring * dkim_signature;
+int hsize;
 const uschar * errstr;
+uschar * verrstr;
 BOOL rc;
 
 DEBUG(D_transport) debug_printf("dkim signing direct-mode\n");
@@ -132,8 +142,8 @@ tctx->options = tctx->options & ~(topt_end_dot | topt_use_bdat)
   | topt_output_string | topt_no_body;
 
 rc = transport_write_message(tctx, 0);
-hdrs = tctx->u.msg;
-hdrs[hsize = tctx->msg_ptr] = '\0';
+hdrs = string_from_gstring(tctx->u.msg);
+hsize = tctx->u.msg->ptr;
 
 tctx->u.fd = save_fd;
 tctx->options = save_options;
@@ -143,14 +153,23 @@ if (!rc) return FALSE;
 
 dkim->dot_stuffed = !!(save_options & topt_end_dot);
 
-if ((dkim_signature = dkim_exim_sign(deliver_datafile, SPOOL_DATA_START_OFFSET,
+if (!(dkim_signature = dkim_exim_sign(deliver_datafile, SPOOL_DATA_START_OFFSET,
 				    hdrs, dkim, &errstr)))
-  siglen = Ustrlen(dkim_signature);
-else if (!(rc = dkt_sign_fail(dkim, &errno)))
-  {
-  *err = errstr;
-  return FALSE;
-  }
+  if (!(rc = dkt_sign_fail(dkim, &errno)))
+    {
+    *err = errstr;
+    return FALSE;
+    }
+
+#ifdef EXPERIMENTAL_ARC
+if (dkim->arc_signspec)			/* Prepend ARC headers */
+  if (!(dkim_signature =
+	arc_sign(dkim->arc_signspec, dkim_signature, &verrstr)))
+    {
+    *err = verrstr;
+    return FALSE;
+    }
+#endif
 
 /* Write the signature and headers into the deliver-out-buffer.  This should
 mean they go out in the same packet as the MAIL, RCPT and (first) BDAT commands
@@ -162,8 +181,12 @@ temporarily set the marker for possible already-CRLF input. */
 tctx->options &= ~topt_escape_headers;
 spool_file_wireformat = TRUE;
 transport_write_reset(0);
-if (  siglen > 0 && !write_chunk(tctx, dkim_signature, siglen)
-   || !write_chunk(tctx, hdrs, hsize))
+if (  (  dkim_signature
+      && dkim_signature->ptr > 0
+      && !write_chunk(tctx, dkim_signature->s, dkim_signature->ptr)
+      )
+   || !write_chunk(tctx, hdrs, hsize)
+   )
   return FALSE;
 
 spool_file_wireformat = save_wireformat;
@@ -199,8 +222,9 @@ dkt_via_kfile(transport_ctx * tctx, struct ob_dkim * dkim, const uschar ** err)
 int dkim_fd;
 int save_errno = 0;
 BOOL rc;
-uschar * dkim_spool_name, * dkim_signature;
-int siglen = 0, options;
+uschar * dkim_spool_name;
+gstring * dkim_signature;
+int options, dlen;
 off_t k_file_size;
 const uschar * errstr;
 
@@ -243,13 +267,26 @@ if (!rc)
 /* Feed the file to the goats^W DKIM lib */
 
 dkim->dot_stuffed = !!(options & topt_end_dot);
-if ((dkim_signature = dkim_exim_sign(dkim_fd, 0, NULL, dkim, &errstr)))
-  siglen = Ustrlen(dkim_signature);
-else if (!(rc = dkt_sign_fail(dkim, &save_errno)))
+if (!(dkim_signature = dkim_exim_sign(dkim_fd, 0, NULL, dkim, &errstr)))
   {
-  *err = errstr;
-  goto CLEANUP;
+  dlen = 0;
+  if (!(rc = dkt_sign_fail(dkim, &save_errno)))
+    {
+    *err = errstr;
+    goto CLEANUP;
+    }
+  }
+else
+  dlen = dkim_signature->ptr;
+
+#ifdef EXPERIMENTAL_ARC
+if (dkim->arc_signspec)				/* Prepend ARC headers */
+  {
+  if (!(dkim_signature = arc_sign(dkim->arc_signspec, dkim_signature, USS err)))
+    goto CLEANUP;
+  dlen = dkim_signature->ptr;
   }
+#endif
 
 #ifndef OS_SENDFILE
 if (options & topt_use_bdat)
@@ -266,27 +303,33 @@ if (options & topt_use_bdat)
   MAIL & RCPT commands flushed, then reap the responses so we can
   error out on RCPT rejects before sending megabytes. */
 
-  if (siglen + k_file_size > DELIVER_OUT_BUFFER_SIZE && siglen > 0)
+  if (  dlen + k_file_size > DELIVER_OUT_BUFFER_SIZE
+     && dlen > 0)
     {
-    if (  tctx->chunk_cb(tctx, siglen, 0) != OK
-       || !transport_write_block(tctx, dkim_signature, siglen, FALSE)
+    if (  tctx->chunk_cb(tctx, dlen, 0) != OK
+       || !transport_write_block(tctx,
+		    dkim_signature->s, dlen, FALSE)
        || tctx->chunk_cb(tctx, 0, tc_reap_prev) != OK
        )
       goto err;
-    siglen = 0;
+    dlen = 0;
     }
 
   /* Send the BDAT command for the entire message, as a single LAST-marked
   chunk. */
 
-  if (tctx->chunk_cb(tctx, siglen + k_file_size, tc_chunk_last) != OK)
+  if (tctx->chunk_cb(tctx, dlen + k_file_size, tc_chunk_last) != OK)
     goto err;
   }
 
-if(siglen > 0 && !transport_write_block(tctx, dkim_signature, siglen, TRUE))
+if(dlen > 0 && !transport_write_block(tctx, dkim_signature->s, dlen, TRUE))
   goto err;
 
-if (!dkt_send_file(tctx->u.fd, dkim_fd, 0, k_file_size))
+if (!dkt_send_file(tctx->u.fd, dkim_fd, 0
+#ifdef OS_SENDFILE
+  , k_file_size
+#endif
+  ))
   {
   save_errno = errno;
   rc = FALSE;
@@ -328,7 +371,8 @@ dkim_transport_write_message(transport_ctx * tctx,
 {
 /* If we can't sign, just call the original function. */
 
-if (!(dkim->dkim_private_key && dkim->dkim_domain && dkim->dkim_selector))
+if (  !(dkim->dkim_private_key && dkim->dkim_domain && dkim->dkim_selector)
+   && !dkim->force_bodyhash)
   return transport_write_message(tctx, 0);
 
 /* If there is no filter command set up, construct the message and calculate