Add compress_backend, allowing compression of messages and envelopes in the queue.

To use it, just add "queue compress" in smtpd.conf. For now, only zlib is used.

lots of feedback from eric@ and gilles@

ok eric@ gilles@

1 files changed, 56 insertions, 0 deletions

diff --git a/usr.sbin/smtpd/encrypt.c b/usr.sbin/smtpd/encrypt.c
new file mode 100644
index 00000000000..831d92ffce2
--- /dev/null
+++ b/usr.sbin/smtpd/encrypt.c
@@ -0,0 +1,56 @@
+/*
+ * Copyright (c) 2012 Charles Longeau <chl@openbsd.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <sys/types.h>
+#include <sys/queue.h>
+#include <sys/tree.h>
+#include <sys/param.h>
+#include <sys/socket.h>
+#include <sys/stat.h>
+
+#include <imsg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "smtpd.h"
+#include "log.h"
+
+
+int
+encrypt_file(int fdin, int fdout)
+{
+	return (1);
+}
+
+int
+decrypt_file(int fdin, int fdout)
+{
+	return (1);
+}
+
+size_t
+encrypt_buffer(const char *ib, size_t iblen, char *ob, size_t oblen)
+{
+	return (1);
+}
+
+size_t
+decrypt_buffer(const char *ib, size_t iblen, char *ob, size_t oblen)
+{
+	return (1);
+}