Update openvpn to Version 2.3_alpha3

--HG--
rename : openvpn/src/plugins/README => openvpn/doc/README.plugins
rename : openvpn/src/plugins/defer/README => openvpn/sample/sample-plugins/defer/README
rename : openvpn/src/plugins/defer/build => openvpn/sample/sample-plugins/defer/build
rename : openvpn/src/plugins/defer/simple.c => openvpn/sample/sample-plugins/defer/simple.c
rename : openvpn/src/plugins/examples/simple.def => openvpn/sample/sample-plugins/defer/simple.def
rename : openvpn/src/plugins/defer/winbuild => openvpn/sample/sample-plugins/defer/winbuild
rename : openvpn/src/plugins/examples/build => openvpn/sample/sample-plugins/log/build
rename : openvpn/src/plugins/examples/log.c => openvpn/sample/sample-plugins/log/log.c
rename : openvpn/src/plugins/examples/log_v3.c => openvpn/sample/sample-plugins/log/log_v3.c
rename : openvpn/src/plugins/examples/winbuild => openvpn/sample/sample-plugins/log/winbuild
rename : openvpn/src/plugins/examples/README => openvpn/sample/sample-plugins/simple/README
rename : openvpn/src/plugins/examples/build => openvpn/sample/sample-plugins/simple/build
rename : openvpn/src/plugins/examples/simple.c => openvpn/sample/sample-plugins/simple/simple.c
rename : openvpn/src/plugins/examples/simple.def => openvpn/sample/sample-plugins/simple/simple.def
rename : openvpn/src/plugins/examples/winbuild => openvpn/sample/sample-plugins/simple/winbuild
rename : openvpn/src/plugins/auth-pam/README => openvpn/src/plugins/auth-pam/README.auth-pam
rename : openvpn/src/plugins/down-root/README => openvpn/src/plugins/down-root/README.down-root

1 files changed, 47 insertions, 0 deletions

diff --git a/openvpn/doc/README.plugins b/openvpn/doc/README.plugins
new file mode 100644
index 00000000..6e490c5a
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+++ b/openvpn/doc/README.plugins
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+OpenVPN Plugins
+---------------
+
+Starting with OpenVPN 2.0-beta17, compiled plugin modules are
+supported on any *nix OS which includes libdl or on Windows.
+One or more modules may be loaded into OpenVPN using
+the --plugin directive, and each plugin module is capable of
+intercepting any of the script callbacks which OpenVPN supports:
+
+(1) up
+(2) down
+(3) route-up
+(4) ipchange
+(5) tls-verify
+(6) auth-user-pass-verify
+(7) client-connect
+(8) client-disconnect
+(9) learn-address
+
+See the openvpn-plugin.h file in the top-level directory of the
+OpenVPN source distribution for more detailed information
+on the plugin interface.
+
+Included Plugins
+----------------
+
+auth-pam -- Authenticate using PAM and a split privilege
+            execution model which functions even if
+            root privileges or the execution environment
+            have been altered with --user/--group/--chroot.
+            Tested on Linux only.
+
+down-root -- Enable the running of down scripts with root privileges
+             even if --user/--group/--chroot have been used
+             to drop root privileges or change the execution
+             environment.  Not applicable on Windows.
+
+examples -- A simple example that demonstrates a portable
+            plugin, i.e. one which can be built for *nix
+            or Windows from the same source.
+
+Building Plugins
+----------------
+
+cd to the top-level directory of a plugin, and use the
+"make" command to build it.  The examples plugin is
+built using a build script, not a makefile.