- int dkim_fd;
- int save_errno = 0;
- BOOL rc;
- uschar dkim_spool_name[256];
- char sbuf[2048];
- int sread = 0;
- int wwritten = 0;
- uschar *dkim_signature = NULL;
- off_t size = 0;
-
- if (!( ((dkim_private_key != NULL) && (dkim_domain != NULL) && (dkim_selector != NULL)) )) {
- /* If we can't sign, just call the original function. */
- return transport_write_message(addr, fd, options,
- size_limit, add_headers, remove_headers,
- check_string, escape_string, rewrite_rules,
- rewrite_existflags);
+int dkim_fd;
+int save_errno = 0;
+BOOL rc;
+uschar dkim_spool_name[256];
+char sbuf[2048];
+int sread = 0;
+int wwritten = 0;
+uschar *dkim_signature = NULL;
+
+/* If we can't sign, just call the original function. */
+
+if (!(dkim_private_key && dkim_domain && dkim_selector))
+ return transport_write_message(addr, fd, options,
+ size_limit, add_headers, remove_headers,
+ check_string, escape_string, rewrite_rules,
+ rewrite_existflags);
+
+(void)string_format(dkim_spool_name, 256, "%s/input/%s/%s-%d-K",
+ spool_directory, message_subdir, message_id, (int)getpid());
+
+if ((dkim_fd = Uopen(dkim_spool_name, O_RDWR|O_CREAT|O_TRUNC, SPOOL_MODE)) < 0)
+ {
+ /* Can't create spool file. Ugh. */
+ rc = FALSE;
+ save_errno = errno;
+ goto CLEANUP;