Incremented version to 2.1_rc7d.

Support asynchronous authentication by plugins by allowing
OPENVPN_PLUGIN_AUTH_USER_PASS_VERIFY to return
OPENVPN_PLUGIN_FUNC_DEFERRED.  See comments in
openvpn-plugin.h for documentation.  Enabled by ENABLE_DEF_AUTH.

Added a simple packet filter functionality that can be driven by
a plugin.  See comments in openvpn-plugin.h for documentation.
Enabled by ENABLE_PF.

See openvpn/plugin/defer/simple.c for examples of ENABLE_DEF_AUTH
and ENABLE_PF.

"TLS Error: local/remote TLS keys are out of sync" is no longer a
fatal error for TCP-based sessions, since the error can arise
normally in the course of deferred authentication.  In a related
change, allow packet-id sequence to begin at some number n > 0 for
TCP sessions, rather than strictly requiring sequence to begin
at 1.

Added a test to configure.ac for LoadLibrary function on Windows.

Modified "make dist" function to include all files from
install-win32 so that ./domake-win can be run from a
tarball-expanded directory.

setenv and setenv-safe directives may now omit a value argument
which defaults to "".


git-svn-id: http://svn.openvpn.net/projects/openvpn/branches/BETA21/openvpn@2978 e7ae566f-a301-0410-adde-c780ea21d3b5

1 files changed, 103 insertions, 0 deletions

diff --git a/pf.h b/pf.h
new file mode 100644
index 0000000..754db8a
--- /dev/null
+++ b/pf.h
@@ -0,0 +1,103 @@
+/*
+ *  OpenVPN -- An application to securely tunnel IP networks
+ *             over a single TCP/UDP port, with support for SSL/TLS-based
+ *             session authentication and key exchange,
+ *             packet encryption, packet authentication, and
+ *             packet compression.
+ *
+ *  Copyright (C) 2002-2005 OpenVPN Solutions LLC <info@openvpn.net>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2
+ *  as published by the Free Software Foundation.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program (see the file COPYING included with this
+ *  distribution); if not, write to the Free Software Foundation, Inc.,
+ *  59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+/* packet filter functions */
+
+#if defined(ENABLE_PF) && !defined(OPENVPN_PF_H)
+#define OPENVPN_PF_H
+
+#include "list.h"
+#include "mroute.h"
+
+#define PF_DEBUG 0
+
+struct context;
+
+struct ipv4_subnet {
+  bool exclude;
+  in_addr_t network;
+  in_addr_t netmask;
+};
+
+struct pf_subnet {
+  struct pf_subnet *next;
+  struct ipv4_subnet rule;
+};
+
+struct pf_subnet_set {
+  bool default_allow;
+  struct pf_subnet *list;
+};
+
+struct pf_cn {
+  bool exclude;
+  char *cn;
+};
+
+struct pf_cn_elem {
+  struct pf_cn_elem *next;
+  struct pf_cn rule;
+};
+
+struct pf_cn_set {
+  bool default_allow;
+  struct pf_cn_elem *list;
+  struct hash *hash_table;
+};
+
+struct pf_set {
+  bool kill;
+  struct pf_subnet_set sns;
+  struct pf_cn_set cns;
+};
+
+struct pf_context {
+  char *filename;
+  time_t file_last_mod;
+  unsigned int n_check_reload;
+  struct event_timeout reload;
+  struct pf_set *pfs;
+};
+
+void pf_init_context (struct context *c);
+
+void pf_destroy_context (struct pf_context *pfc);
+
+void pf_check_reload (struct context *c);
+
+bool pf_c2c_test (const struct context *src, const struct context *dest);
+
+bool pf_addr_test (const struct context *src, const struct mroute_addr *dest);
+
+static inline bool
+pf_kill_test (const struct pf_set *pfs)
+{
+  return pfs->kill;
+}
+
+#if PF_DEBUG >= 1
+void pf_context_print (const struct pf_context *pfc, const char *prefix, const int lev);
+#endif
+
+#endif