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-rw-r--r--include/Makefile.in657
-rw-r--r--include/openvpn-msg.h18
-rw-r--r--include/openvpn-plugin.h879
-rw-r--r--include/openvpn-plugin.h.in62
4 files changed, 51 insertions, 1565 deletions
diff --git a/include/Makefile.in b/include/Makefile.in
deleted file mode 100644
index 67fbbc8..0000000
--- a/include/Makefile.in
+++ /dev/null
@@ -1,657 +0,0 @@
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-#
-# OpenVPN -- An application to securely tunnel IP networks
-# over a single UDP port, with support for SSL/TLS-based
-# session authentication and key exchange,
-# packet encryption, packet authentication, and
-# packet compression.
-#
-# Copyright (C) 2002-2018 OpenVPN Inc <sales@openvpn.net>
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- done
-check-am: all-am
-check: check-am
-all-am: Makefile $(HEADERS) openvpn-plugin.h
-installdirs:
- for dir in "$(DESTDIR)$(includedir)"; do \
- test -z "$$dir" || $(MKDIR_P) "$$dir"; \
- done
-install: install-am
-install-exec: install-exec-am
-install-data: install-data-am
-uninstall: uninstall-am
-
-install-am: all-am
- @$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
-
-installcheck: installcheck-am
-install-strip:
- if test -z '$(STRIP)'; then \
- $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
- install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
- install; \
- else \
- $(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
- install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
- "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'" install; \
- fi
-mostlyclean-generic:
-
-clean-generic:
-
-distclean-generic:
- -test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
- -test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
-
-maintainer-clean-generic:
- @echo "This command is intended for maintainers to use"
- @echo "it deletes files that may require special tools to rebuild."
- -test -z "$(MAINTAINERCLEANFILES)" || rm -f $(MAINTAINERCLEANFILES)
-clean: clean-am
-
-clean-am: clean-generic clean-libtool mostlyclean-am
-
-distclean: distclean-am
- -rm -f Makefile
-distclean-am: clean-am distclean-generic distclean-hdr distclean-tags
-
-dvi: dvi-am
-
-dvi-am:
-
-html: html-am
-
-html-am:
-
-info: info-am
-
-info-am:
-
-install-data-am: install-includeHEADERS
-
-install-dvi: install-dvi-am
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-
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- -rm -f Makefile
-maintainer-clean-am: distclean-am maintainer-clean-generic
-
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-
-pdf: pdf-am
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-pdf-am:
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-ps-am:
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-uninstall-am: uninstall-includeHEADERS
-
-.MAKE: all install-am install-strip
-
-.PHONY: CTAGS GTAGS TAGS all all-am check check-am clean clean-generic \
- clean-libtool cscopelist-am ctags ctags-am distclean \
- distclean-generic distclean-hdr distclean-libtool \
- distclean-tags distdir dvi dvi-am html html-am info info-am \
- install install-am install-data install-data-am install-dvi \
- install-dvi-am install-exec install-exec-am install-html \
- install-html-am install-includeHEADERS install-info \
- install-info-am install-man install-pdf install-pdf-am \
- install-ps install-ps-am install-strip installcheck \
- installcheck-am installdirs maintainer-clean \
- maintainer-clean-generic mostlyclean mostlyclean-generic \
- mostlyclean-libtool pdf pdf-am ps ps-am tags tags-am uninstall \
- uninstall-am uninstall-includeHEADERS
-
-.PRECIOUS: Makefile
-
-
-# Tell versions [3.59,3.63) of GNU make to not export all variables.
-# Otherwise a system limit (for SysV at least) may be exceeded.
-.NOEXPORT:
diff --git a/include/openvpn-msg.h b/include/openvpn-msg.h
index 66177a2..a4789e3 100644
--- a/include/openvpn-msg.h
+++ b/include/openvpn-msg.h
@@ -39,6 +39,8 @@ typedef enum {
msg_del_block_dns,
msg_register_dns,
msg_enable_dhcp,
+ msg_register_ring_buffers,
+ msg_set_mtu
} message_type_t;
typedef struct {
@@ -117,4 +119,20 @@ typedef struct {
interface_t iface;
} enable_dhcp_message_t;
+typedef struct {
+ message_header_t header;
+ HANDLE device;
+ HANDLE send_ring_handle;
+ HANDLE receive_ring_handle;
+ HANDLE send_tail_moved;
+ HANDLE receive_tail_moved;
+} register_ring_buffers_message_t;
+
+typedef struct {
+ message_header_t header;
+ interface_t iface;
+ short family;
+ int mtu;
+} set_mtu_message_t;
+
#endif /* ifndef OPENVPN_MSG_H_ */
diff --git a/include/openvpn-plugin.h b/include/openvpn-plugin.h
deleted file mode 100644
index 03399f9..0000000
--- a/include/openvpn-plugin.h
+++ /dev/null
@@ -1,879 +0,0 @@
-/* include/openvpn-plugin.h. Generated from openvpn-plugin.h.in by configure. */
-/*
- * 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) 2002-2018 OpenVPN Inc <sales@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; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- */
-
-#ifndef OPENVPN_PLUGIN_H_
-#define OPENVPN_PLUGIN_H_
-
-#define OPENVPN_PLUGIN_VERSION 3
-
-#ifdef ENABLE_CRYPTO
-#ifdef ENABLE_CRYPTO_MBEDTLS
-#include <mbedtls/x509_crt.h>
-#ifndef __OPENVPN_X509_CERT_T_DECLARED
-#define __OPENVPN_X509_CERT_T_DECLARED
-typedef mbedtls_x509_crt openvpn_x509_cert_t;
-#endif
-#else /* ifdef ENABLE_CRYPTO_MBEDTLS */
-#include <openssl/x509.h>
-#ifndef __OPENVPN_X509_CERT_T_DECLARED
-#define __OPENVPN_X509_CERT_T_DECLARED
-typedef X509 openvpn_x509_cert_t;
-#endif
-#endif
-#endif
-
-#include <stdarg.h>
-#include <stddef.h>
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-/* Provide some basic version information to plug-ins at OpenVPN compile time
- * This is will not be the complete version
- */
-#define OPENVPN_VERSION_MAJOR 2
-#define OPENVPN_VERSION_MINOR 4
-#define OPENVPN_VERSION_PATCH ".9"
-
-/*
- * Plug-in types. These types correspond to the set of script callbacks
- * supported by OpenVPN.
- *
- * This is the general call sequence to expect when running in server mode:
- *
- * Initial Server Startup:
- *
- * FUNC: openvpn_plugin_open_v1
- * FUNC: openvpn_plugin_client_constructor_v1 (this is the top-level "generic"
- * client template)
- * FUNC: openvpn_plugin_func_v1 OPENVPN_PLUGIN_UP
- * FUNC: openvpn_plugin_func_v1 OPENVPN_PLUGIN_ROUTE_UP
- *
- * New Client Connection:
- *
- * FUNC: openvpn_plugin_client_constructor_v1
- * FUNC: openvpn_plugin_func_v1 OPENVPN_PLUGIN_ENABLE_PF
- * FUNC: openvpn_plugin_func_v1 OPENVPN_PLUGIN_TLS_VERIFY (called once for every cert
- * in the server chain)
- * FUNC: openvpn_plugin_func_v1 OPENVPN_PLUGIN_AUTH_USER_PASS_VERIFY
- * FUNC: openvpn_plugin_func_v1 OPENVPN_PLUGIN_TLS_FINAL
- * FUNC: openvpn_plugin_func_v1 OPENVPN_PLUGIN_IPCHANGE
- *
- * [If OPENVPN_PLUGIN_AUTH_USER_PASS_VERIFY returned OPENVPN_PLUGIN_FUNC_DEFERRED,
- * we don't proceed until authentication is verified via auth_control_file]
- *
- * FUNC: openvpn_plugin_func_v1 OPENVPN_PLUGIN_CLIENT_CONNECT_V2
- * FUNC: openvpn_plugin_func_v1 OPENVPN_PLUGIN_LEARN_ADDRESS
- *
- * [Client session ensues]
- *
- * For each "TLS soft reset", according to reneg-sec option (or similar):
- *
- * FUNC: openvpn_plugin_func_v1 OPENVPN_PLUGIN_ENABLE_PF
- *
- * FUNC: openvpn_plugin_func_v1 OPENVPN_PLUGIN_TLS_VERIFY (called once for every cert
- * in the server chain)
- * FUNC: openvpn_plugin_func_v1 OPENVPN_PLUGIN_AUTH_USER_PASS_VERIFY
- * FUNC: openvpn_plugin_func_v1 OPENVPN_PLUGIN_TLS_FINAL
- *
- * [If OPENVPN_PLUGIN_AUTH_USER_PASS_VERIFY returned OPENVPN_PLUGIN_FUNC_DEFERRED,
- * we expect that authentication is verified via auth_control_file within
- * the number of seconds defined by the "hand-window" option. Data channel traffic
- * will continue to flow uninterrupted during this period.]
- *
- * [Client session continues]
- *
- * FUNC: openvpn_plugin_func_v1 OPENVPN_PLUGIN_CLIENT_DISCONNECT
- * FUNC: openvpn_plugin_client_destructor_v1
- *
- * [ some time may pass ]
- *
- * FUNC: openvpn_plugin_func_v1 OPENVPN_PLUGIN_LEARN_ADDRESS (this coincides with a
- * lazy free of initial
- * learned addr object)
- * Server Shutdown:
- *
- * FUNC: openvpn_plugin_func_v1 OPENVPN_PLUGIN_DOWN
- * FUNC: openvpn_plugin_client_destructor_v1 (top-level "generic" client)
- * FUNC: openvpn_plugin_close_v1
- */
-#define OPENVPN_PLUGIN_UP 0
-#define OPENVPN_PLUGIN_DOWN 1
-#define OPENVPN_PLUGIN_ROUTE_UP 2
-#define OPENVPN_PLUGIN_IPCHANGE 3
-#define OPENVPN_PLUGIN_TLS_VERIFY 4
-#define OPENVPN_PLUGIN_AUTH_USER_PASS_VERIFY 5
-#define OPENVPN_PLUGIN_CLIENT_CONNECT 6
-#define OPENVPN_PLUGIN_CLIENT_DISCONNECT 7
-#define OPENVPN_PLUGIN_LEARN_ADDRESS 8
-#define OPENVPN_PLUGIN_CLIENT_CONNECT_V2 9
-#define OPENVPN_PLUGIN_TLS_FINAL 10
-#define OPENVPN_PLUGIN_ENABLE_PF 11
-#define OPENVPN_PLUGIN_ROUTE_PREDOWN 12
-#define OPENVPN_PLUGIN_N 13
-
-/*
- * Build a mask out of a set of plug-in types.
- */
-#define OPENVPN_PLUGIN_MASK(x) (1<<(x))
-
-/*
- * A pointer to a plugin-defined object which contains
- * the object state.
- */
-typedef void *openvpn_plugin_handle_t;
-
-/*
- * Return value for openvpn_plugin_func_v1 function
- */
-#define OPENVPN_PLUGIN_FUNC_SUCCESS 0
-#define OPENVPN_PLUGIN_FUNC_ERROR 1
-#define OPENVPN_PLUGIN_FUNC_DEFERRED 2
-
-/*
- * For Windows (needs to be modified for MSVC)
- */
-#if defined(_WIN32) && !defined(OPENVPN_PLUGIN_H)
-#define OPENVPN_EXPORT __declspec(dllexport)
-#else
-#define OPENVPN_EXPORT
-#endif
-
-/*
- * If OPENVPN_PLUGIN_H is defined, we know that we are being
- * included in an OpenVPN compile, rather than a plugin compile.
- */
-#ifdef OPENVPN_PLUGIN_H
-
-/*
- * We are compiling OpenVPN.
- */
-#define OPENVPN_PLUGIN_DEF typedef
-#define OPENVPN_PLUGIN_FUNC(name) (*name)
-
-#else /* ifdef OPENVPN_PLUGIN_H */
-
-/*
- * We are compiling plugin.
- */
-#define OPENVPN_PLUGIN_DEF OPENVPN_EXPORT
-#define OPENVPN_PLUGIN_FUNC(name) name
-
-#endif
-
-/*
- * Used by openvpn_plugin_func to return structured
- * data. The plugin should allocate all structure
- * instances, name strings, and value strings with
- * malloc, since OpenVPN will assume that it
- * can free the list by calling free() over the same.
- */
-struct openvpn_plugin_string_list
-{
- struct openvpn_plugin_string_list *next;
- char *name;
- char *value;
-};
-
-
-/* openvpn_plugin_{open,func}_v3() related structs */
-
-/**
- * Defines version of the v3 plugin argument structs
- *
- * Whenever one or more of these structs are modified, this constant
- * must be updated. A changelog should be appended in this comment
- * as well, to make it easier to see what information is available
- * in the different versions.
- *
- * Version Comment
- * 1 Initial plugin v3 structures providing the same API as
- * the v2 plugin interface, X509 certificate information +
- * a logging API for plug-ins.
- *
- * 2 Added ssl_api member in struct openvpn_plugin_args_open_in
- * which identifies the SSL implementation OpenVPN is compiled
- * against.
- *
- * 3 Added ovpn_version, ovpn_version_major, ovpn_version_minor
- * and ovpn_version_patch to provide the runtime version of
- * OpenVPN to plug-ins.
- *
- * 4 Exported secure_memzero() as plugin_secure_memzero()
- *
- * 5 Exported openvpn_base64_encode() as plugin_base64_encode()
- * Exported openvpn_base64_decode() as plugin_base64_decode()
- */
-#define OPENVPN_PLUGINv3_STRUCTVER 5
-
-/**
- * Definitions needed for the plug-in callback functions.
- */
-typedef enum
-{
- PLOG_ERR = (1 << 0),/* Error condition message */
- PLOG_WARN = (1 << 1),/* General warning message */
- PLOG_NOTE = (1 << 2),/* Informational message */
- PLOG_DEBUG = (1 << 3),/* Debug message, displayed if verb >= 7 */
-
- PLOG_ERRNO = (1 << 8),/* Add error description to message */
- PLOG_NOMUTE = (1 << 9), /* Mute setting does not apply for message */
-
-} openvpn_plugin_log_flags_t;
-
-
-#ifdef __GNUC__
-#if __USE_MINGW_ANSI_STDIO
-#define _ovpn_chk_fmt(a, b) __attribute__ ((format(gnu_printf, (a), (b))))
-#else
-#define _ovpn_chk_fmt(a, b) __attribute__ ((format(__printf__, (a), (b))))
-#endif
-#else /* ifdef __GNUC__ */
-#define _ovpn_chk_fmt(a, b)
-#endif
-
-typedef void (*plugin_log_t)(openvpn_plugin_log_flags_t flags,
- const char *plugin_name,
- const char *format, ...) _ovpn_chk_fmt (3, 4);
-
-typedef void (*plugin_vlog_t)(openvpn_plugin_log_flags_t flags,
- const char *plugin_name,
- const char *format,
- va_list arglist) _ovpn_chk_fmt (3, 0);
-/* #undef _ovpn_chk_fmt */
-
-/**
- * Export of secure_memzero() to be used inside plug-ins
- *
- * @param data Pointer to data to zeroise
- * @param len Length of data, in bytes
- *
- */
-typedef void (*plugin_secure_memzero_t)(void *data, size_t len);
-
-/**
- * Export of openvpn_base64_encode() to be used inside plug-ins
- *
- * @param data Pointer to data to BASE64 encode
- * @param size Length of data, in bytes
- * @param *str Pointer to the return buffer. This needed memory is
- * allocated by openvpn_base64_encode() and needs to be free()d
- * after use.
- *
- * @return int Returns the length of the buffer created, or -1 on error.
- *
- */
-typedef int (*plugin_base64_encode_t)(const void *data, int size, char **str);
-
-/**
- * Export of openvpn_base64_decode() to be used inside plug-ins
- *
- * @param str Pointer to the BASE64 encoded data
- * @param data Pointer to the buffer where save the decoded data
- * @param size Size of the destination buffer
- *
- * @return int Returns the length of the decoded data, or -1 on error or
- * if the destination buffer is too small.
- *
- */
-typedef int (*plugin_base64_decode_t)(const char *str, void *data, int size);
-
-
-/**
- * Used by the openvpn_plugin_open_v3() function to pass callback
- * function pointers to the plug-in.
- *
- * plugin_log
- * plugin_vlog : Use these functions to add information to the OpenVPN log file.
- * Messages will only be displayed if the plugin_name parameter
- * is set. PLOG_DEBUG messages will only be displayed with plug-in
- * debug log verbosity (at the time of writing that's verb >= 7).
- *
- * plugin_secure_memzero
- * : Use this function to securely wipe sensitive information from
- * memory. This function is declared in a way that the compiler
- * will not remove these function calls during the compiler
- * optimization phase.
- */
-struct openvpn_plugin_callbacks
-{
- plugin_log_t plugin_log;
- plugin_vlog_t plugin_vlog;
- plugin_secure_memzero_t plugin_secure_memzero;
- plugin_base64_encode_t plugin_base64_encode;
- plugin_base64_decode_t plugin_base64_decode;
-};
-
-/**
- * Used by the openvpn_plugin_open_v3() function to indicate to the
- * plug-in what kind of SSL implementation OpenVPN uses. This is
- * to avoid SEGV issues when OpenVPN is complied against mbed TLS
- * and the plug-in against OpenSSL.
- */
-typedef enum {
- SSLAPI_NONE,
- SSLAPI_OPENSSL,
- SSLAPI_MBEDTLS
-} ovpnSSLAPI;
-
-/**
- * Arguments used to transport variables to the plug-in.
- * The struct openvpn_plugin_args_open_in is only used
- * by the openvpn_plugin_open_v3() function.
- *
- * STRUCT MEMBERS
- *
- * type_mask : Set by OpenVPN to the logical OR of all script
- * types which this version of OpenVPN supports.
- *
- * argv : a NULL-terminated array of options provided to the OpenVPN
- * "plug-in" directive. argv[0] is the dynamic library pathname.
- *
- * envp : a NULL-terminated array of OpenVPN-set environmental
- * variables in "name=value" format. Note that for security reasons,
- * these variables are not actually written to the "official"
- * environmental variable store of the process.
- *
- * callbacks : a pointer to the plug-in callback function struct.
- *
- */
-struct openvpn_plugin_args_open_in
-{
- const int type_mask;
- const char **const argv;
- const char **const envp;
- struct openvpn_plugin_callbacks *callbacks;
- const ovpnSSLAPI ssl_api;
- const char *ovpn_version;
- const unsigned int ovpn_version_major;
- const unsigned int ovpn_version_minor;
- const char *const ovpn_version_patch;
-};
-
-
-/**
- * Arguments used to transport variables from the plug-in back
- * to the OpenVPN process. The struct openvpn_plugin_args_open_return
- * is only used by the openvpn_plugin_open_v3() function.
- *
- * STRUCT MEMBERS
- *
- * type_mask : The plug-in should set this value to the logical OR of all script
- * types which the plug-in wants to intercept. For example, if the
- * script wants to intercept the client-connect and client-disconnect
- * script types:
- *
- * type_mask = OPENVPN_PLUGIN_MASK(OPENVPN_PLUGIN_CLIENT_CONNECT)
- * | OPENVPN_PLUGIN_MASK(OPENVPN_PLUGIN_CLIENT_DISCONNECT)
- *
- * handle : Pointer to a global plug-in context, created by the plug-in. This pointer
- * is passed on to the other plug-in calls.
- *
- * return_list : used to return data back to OpenVPN.
- *
- */
-struct openvpn_plugin_args_open_return
-{
- int type_mask;
- openvpn_plugin_handle_t handle;
- struct openvpn_plugin_string_list **return_list;
-};
-
-/**
- * Arguments used to transport variables to and from the
- * plug-in. The struct openvpn_plugin_args_func is only used
- * by the openvpn_plugin_func_v3() function.
- *
- * STRUCT MEMBERS:
- *
- * type : one of the PLUGIN_x types.
- *
- * argv : a NULL-terminated array of "command line" options which
- * would normally be passed to the script. argv[0] is the dynamic
- * library pathname.
- *
- * envp : a NULL-terminated array of OpenVPN-set environmental
- * variables in "name=value" format. Note that for security reasons,
- * these variables are not actually written to the "official"
- * environmental variable store of the process.
- *
- * handle : Pointer to a global plug-in context, created by the plug-in's openvpn_plugin_open_v3().
- *
- * per_client_context : the per-client context pointer which was returned by
- * openvpn_plugin_client_constructor_v1, if defined.
- *
- * current_cert_depth : Certificate depth of the certificate being passed over (only if compiled with ENABLE_CRYPTO defined)
- *
- * *current_cert : X509 Certificate object received from the client (only if compiled with ENABLE_CRYPTO defined)
- *
- */
-struct openvpn_plugin_args_func_in
-{
- const int type;
- const char **const argv;
- const char **const envp;
- openvpn_plugin_handle_t handle;
- void *per_client_context;
-#ifdef ENABLE_CRYPTO
- int current_cert_depth;
- openvpn_x509_cert_t *current_cert;
-#else
- int __current_cert_depth_disabled; /* Unused, for compatibility purposes only */
- void *__current_cert_disabled; /* Unused, for compatibility purposes only */
-#endif
-};
-
-
-/**
- * Arguments used to transport variables to and from the
- * plug-in. The struct openvpn_plugin_args_func is only used
- * by the openvpn_plugin_func_v3() function.
- *
- * STRUCT MEMBERS:
- *
- * return_list : used to return data back to OpenVPN for further processing/usage by
- * the OpenVPN executable.
- *
- */
-struct openvpn_plugin_args_func_return
-{
- struct openvpn_plugin_string_list **return_list;
-};
-
-/*
- * Multiple plugin modules can be cascaded, and modules can be
- * used in tandem with scripts. The order of operation is that
- * the module func() functions are called in the order that
- * the modules were specified in the config file. If a script
- * was specified as well, it will be called last. If the
- * return code of the module/script controls an authentication
- * function (such as tls-verify or auth-user-pass-verify), then
- * every module and script must return success (0) in order for
- * the connection to be authenticated.
- *
- * Notes:
- *
- * Plugins which use a privilege-separation model (by forking in
- * their initialization function before the main OpenVPN process
- * downgrades root privileges and/or executes a chroot) must
- * daemonize after a fork if the "daemon" environmental variable is
- * set. In addition, if the "daemon_log_redirect" variable is set,
- * the plugin should preserve stdout/stderr across the daemon()
- * syscall. See the daemonize() function in plugin/auth-pam/auth-pam.c
- * for an example.
- */
-
-/*
- * Prototypes for functions which OpenVPN plug-ins must define.
- */
-
-/*
- * FUNCTION: openvpn_plugin_open_v2
- *
- * REQUIRED: YES
- *
- * Called on initial plug-in load. OpenVPN will preserve plug-in state
- * across SIGUSR1 restarts but not across SIGHUP restarts. A SIGHUP reset
- * will cause the plugin to be closed and reopened.
- *
- * ARGUMENTS
- *
- * *type_mask : Set by OpenVPN to the logical OR of all script
- * types which this version of OpenVPN supports. The plug-in
- * should set this value to the logical OR of all script types
- * which the plug-in wants to intercept. For example, if the
- * script wants to intercept the client-connect and
- * client-disconnect script types:
- *
- * *type_mask = OPENVPN_PLUGIN_MASK(OPENVPN_PLUGIN_CLIENT_CONNECT)
- * | OPENVPN_PLUGIN_MASK(OPENVPN_PLUGIN_CLIENT_DISCONNECT)
- *
- * argv : a NULL-terminated array of options provided to the OpenVPN
- * "plug-in" directive. argv[0] is the dynamic library pathname.
- *
- * envp : a NULL-terminated array of OpenVPN-set environmental
- * variables in "name=value" format. Note that for security reasons,
- * these variables are not actually written to the "official"
- * environmental variable store of the process.
- *
- * return_list : used to return data back to OpenVPN.
- *
- * RETURN VALUE
- *
- * An openvpn_plugin_handle_t value on success, NULL on failure
- */
-OPENVPN_PLUGIN_DEF openvpn_plugin_handle_t OPENVPN_PLUGIN_FUNC(openvpn_plugin_open_v2)
- (unsigned int *type_mask,
- const char *argv[],
- const char *envp[],
- struct openvpn_plugin_string_list **return_list);
-
-/*
- * FUNCTION: openvpn_plugin_func_v2
- *
- * Called to perform the work of a given script type.
- *
- * REQUIRED: YES
- *
- * ARGUMENTS
- *
- * handle : the openvpn_plugin_handle_t value which was returned by
- * openvpn_plugin_open.
- *
- * type : one of the PLUGIN_x types
- *
- * argv : a NULL-terminated array of "command line" options which
- * would normally be passed to the script. argv[0] is the dynamic
- * library pathname.
- *
- * envp : a NULL-terminated array of OpenVPN-set environmental
- * variables in "name=value" format. Note that for security reasons,
- * these variables are not actually written to the "official"
- * environmental variable store of the process.
- *
- * per_client_context : the per-client context pointer which was returned by
- * openvpn_plugin_client_constructor_v1, if defined.
- *
- * return_list : used to return data back to OpenVPN.
- *
- * RETURN VALUE
- *
- * OPENVPN_PLUGIN_FUNC_SUCCESS on success, OPENVPN_PLUGIN_FUNC_ERROR on failure
- *
- * In addition, OPENVPN_PLUGIN_FUNC_DEFERRED may be returned by
- * OPENVPN_PLUGIN_AUTH_USER_PASS_VERIFY. This enables asynchronous
- * authentication where the plugin (or one of its agents) may indicate
- * authentication success/failure some number of seconds after the return
- * of the OPENVPN_PLUGIN_AUTH_USER_PASS_VERIFY handler by writing a single
- * char to the file named by auth_control_file in the environmental variable
- * list (envp).
- *
- * first char of auth_control_file:
- * '0' -- indicates auth failure
- * '1' -- indicates auth success
- *
- * OpenVPN will delete the auth_control_file after it goes out of scope.
- *
- * If an OPENVPN_PLUGIN_ENABLE_PF handler is defined and returns success
- * for a particular client instance, packet filtering will be enabled for that
- * instance. OpenVPN will then attempt to read the packet filter configuration
- * from the temporary file named by the environmental variable pf_file. This
- * file may be generated asynchronously and may be dynamically updated during the
- * client session, however the client will be blocked from sending or receiving
- * VPN tunnel packets until the packet filter file has been generated. OpenVPN
- * will periodically test the packet filter file over the life of the client
- * instance and reload when modified. OpenVPN will delete the packet filter file
- * when the client instance goes out of scope.
- *
- * Packet filter file grammar:
- *
- * [CLIENTS DROP|ACCEPT]
- * {+|-}common_name1
- * {+|-}common_name2
- * . . .
- * [SUBNETS DROP|ACCEPT]
- * {+|-}subnet1
- * {+|-}subnet2
- * . . .
- * [END]
- *
- * Subnet: IP-ADDRESS | IP-ADDRESS/NUM_NETWORK_BITS
- *
- * CLIENTS refers to the set of clients (by their common-name) which
- * this instance is allowed ('+') to connect to, or is excluded ('-')
- * from connecting to. Note that in the case of client-to-client
- * connections, such communication must be allowed by the packet filter
- * configuration files of both clients.
- *
- * SUBNETS refers to IP addresses or IP address subnets which this
- * instance may connect to ('+') or is excluded ('-') from connecting
- * to.
- *
- * DROP or ACCEPT defines default policy when there is no explicit match
- * for a common-name or subnet. The [END] tag must exist. A special
- * purpose tag called [KILL] will immediately kill the client instance.
- * A given client or subnet rule applies to both incoming and outgoing
- * packets.
- *
- * See plugin/defer/simple.c for an example on using asynchronous
- * authentication and client-specific packet filtering.
- */
-OPENVPN_PLUGIN_DEF int OPENVPN_PLUGIN_FUNC(openvpn_plugin_func_v2)
- (openvpn_plugin_handle_t handle,
- const int type,
- const char *argv[],
- const char *envp[],
- void *per_client_context,
- struct openvpn_plugin_string_list **return_list);
-
-
-/*
- * FUNCTION: openvpn_plugin_open_v3
- *
- * REQUIRED: YES
- *
- * Called on initial plug-in load. OpenVPN will preserve plug-in state
- * across SIGUSR1 restarts but not across SIGHUP restarts. A SIGHUP reset
- * will cause the plugin to be closed and reopened.
- *
- * ARGUMENTS
- *
- * version : fixed value, defines the API version of the OpenVPN plug-in API. The plug-in
- * should validate that this value is matching the OPENVPN_PLUGINv3_STRUCTVER
- * value.
- *
- * arguments : Structure with all arguments available to the plug-in.
- *
- * retptr : used to return data back to OpenVPN.
- *
- * RETURN VALUE
- *
- * OPENVPN_PLUGIN_FUNC_SUCCESS on success, OPENVPN_PLUGIN_FUNC_ERROR on failure
- */
-OPENVPN_PLUGIN_DEF int OPENVPN_PLUGIN_FUNC(openvpn_plugin_open_v3)
- (const int version,
- struct openvpn_plugin_args_open_in const *arguments,
- struct openvpn_plugin_args_open_return *retptr);
-
-/*
- * FUNCTION: openvpn_plugin_func_v3
- *
- * Called to perform the work of a given script type.
- *
- * REQUIRED: YES
- *
- * ARGUMENTS
- *
- * version : fixed value, defines the API version of the OpenVPN plug-in API. The plug-in
- * should validate that this value is matching the OPENVPN_PLUGIN_VERSION value.
- *
- * handle : the openvpn_plugin_handle_t value which was returned by
- * openvpn_plugin_open.
- *
- * return_list : used to return data back to OpenVPN.
- *
- * RETURN VALUE
- *
- * OPENVPN_PLUGIN_FUNC_SUCCESS on success, OPENVPN_PLUGIN_FUNC_ERROR on failure
- *
- * In addition, OPENVPN_PLUGIN_FUNC_DEFERRED may be returned by
- * OPENVPN_PLUGIN_AUTH_USER_PASS_VERIFY. This enables asynchronous
- * authentication where the plugin (or one of its agents) may indicate
- * authentication success/failure some number of seconds after the return
- * of the OPENVPN_PLUGIN_AUTH_USER_PASS_VERIFY handler by writing a single
- * char to the file named by auth_control_file in the environmental variable
- * list (envp).
- *
- * first char of auth_control_file:
- * '0' -- indicates auth failure
- * '1' -- indicates auth success
- *
- * OpenVPN will delete the auth_control_file after it goes out of scope.
- *
- * If an OPENVPN_PLUGIN_ENABLE_PF handler is defined and returns success
- * for a particular client instance, packet filtering will be enabled for that
- * instance. OpenVPN will then attempt to read the packet filter configuration
- * from the temporary file named by the environmental variable pf_file. This
- * file may be generated asynchronously and may be dynamically updated during the
- * client session, however the client will be blocked from sending or receiving
- * VPN tunnel packets until the packet filter file has been generated. OpenVPN
- * will periodically test the packet filter file over the life of the client
- * instance and reload when modified. OpenVPN will delete the packet filter file
- * when the client instance goes out of scope.
- *
- * Packet filter file grammar:
- *
- * [CLIENTS DROP|ACCEPT]
- * {+|-}common_name1
- * {+|-}common_name2
- * . . .
- * [SUBNETS DROP|ACCEPT]
- * {+|-}subnet1
- * {+|-}subnet2
- * . . .
- * [END]
- *
- * Subnet: IP-ADDRESS | IP-ADDRESS/NUM_NETWORK_BITS
- *
- * CLIENTS refers to the set of clients (by their common-name) which
- * this instance is allowed ('+') to connect to, or is excluded ('-')
- * from connecting to. Note that in the case of client-to-client
- * connections, such communication must be allowed by the packet filter
- * configuration files of both clients.
- *
- * SUBNETS refers to IP addresses or IP address subnets which this
- * instance may connect to ('+') or is excluded ('-') from connecting
- * to.
- *
- * DROP or ACCEPT defines default policy when there is no explicit match
- * for a common-name or subnet. The [END] tag must exist. A special
- * purpose tag called [KILL] will immediately kill the client instance.
- * A given client or subnet rule applies to both incoming and outgoing
- * packets.
- *
- * See plugin/defer/simple.c for an example on using asynchronous
- * authentication and client-specific packet filtering.
- */
-OPENVPN_PLUGIN_DEF int OPENVPN_PLUGIN_FUNC(openvpn_plugin_func_v3)
- (const int version,
- struct openvpn_plugin_args_func_in const *arguments,
- struct openvpn_plugin_args_func_return *retptr);
-
-/*
- * FUNCTION: openvpn_plugin_close_v1
- *
- * REQUIRED: YES
- *
- * ARGUMENTS
- *
- * handle : the openvpn_plugin_handle_t value which was returned by
- * openvpn_plugin_open.
- *
- * Called immediately prior to plug-in unload.
- */
-OPENVPN_PLUGIN_DEF void OPENVPN_PLUGIN_FUNC(openvpn_plugin_close_v1)
- (openvpn_plugin_handle_t handle);
-
-/*
- * FUNCTION: openvpn_plugin_abort_v1
- *
- * REQUIRED: NO
- *
- * ARGUMENTS
- *
- * handle : the openvpn_plugin_handle_t value which was returned by
- * openvpn_plugin_open.
- *
- * Called when OpenVPN is in the process of aborting due to a fatal error.
- * Will only be called on an open context returned by a prior successful
- * openvpn_plugin_open callback.
- */
-OPENVPN_PLUGIN_DEF void OPENVPN_PLUGIN_FUNC(openvpn_plugin_abort_v1)
- (openvpn_plugin_handle_t handle);
-
-/*
- * FUNCTION: openvpn_plugin_client_constructor_v1
- *
- * Called to allocate a per-client memory region, which
- * is then passed to the openvpn_plugin_func_v2 function.
- * This function is called every time the OpenVPN server
- * constructs a client instance object, which normally
- * occurs when a session-initiating packet is received
- * by a new client, even before the client has authenticated.
- *
- * This function should allocate the private memory needed
- * by the plugin to track individual OpenVPN clients, and
- * return a void * to this memory region.
- *
- * REQUIRED: NO
- *
- * ARGUMENTS
- *
- * handle : the openvpn_plugin_handle_t value which was returned by
- * openvpn_plugin_open.
- *
- * RETURN VALUE
- *
- * void * pointer to plugin's private per-client memory region, or NULL
- * if no memory region is required.
- */
-OPENVPN_PLUGIN_DEF void *OPENVPN_PLUGIN_FUNC(openvpn_plugin_client_constructor_v1)
- (openvpn_plugin_handle_t handle);
-
-/*
- * FUNCTION: openvpn_plugin_client_destructor_v1
- *
- * This function is called on client instance object destruction.
- *
- * REQUIRED: NO
- *
- * ARGUMENTS
- *
- * handle : the openvpn_plugin_handle_t value which was returned by
- * openvpn_plugin_open.
- *
- * per_client_context : the per-client context pointer which was returned by
- * openvpn_plugin_client_constructor_v1, if defined.
- */
-OPENVPN_PLUGIN_DEF void OPENVPN_PLUGIN_FUNC(openvpn_plugin_client_destructor_v1)
- (openvpn_plugin_handle_t handle, void *per_client_context);
-
-/*
- * FUNCTION: openvpn_plugin_select_initialization_point_v1
- *
- * Several different points exist in OpenVPN's initialization sequence where
- * the openvpn_plugin_open function can be called. While the default is
- * OPENVPN_PLUGIN_INIT_PRE_DAEMON, this function can be used to select a
- * different initialization point. For example, if your plugin needs to
- * return configuration parameters to OpenVPN, use
- * OPENVPN_PLUGIN_INIT_PRE_CONFIG_PARSE.
- *
- * REQUIRED: NO
- *
- * RETURN VALUE:
- *
- * An OPENVPN_PLUGIN_INIT_x value.
- */
-#define OPENVPN_PLUGIN_INIT_PRE_CONFIG_PARSE 1
-#define OPENVPN_PLUGIN_INIT_PRE_DAEMON 2 /* default */
-#define OPENVPN_PLUGIN_INIT_POST_DAEMON 3
-#define OPENVPN_PLUGIN_INIT_POST_UID_CHANGE 4
-
-OPENVPN_PLUGIN_DEF int OPENVPN_PLUGIN_FUNC(openvpn_plugin_select_initialization_point_v1)
- (void);
-
-/*
- * FUNCTION: openvpn_plugin_min_version_required_v1
- *
- * This function is called by OpenVPN to query the minimum
- * plugin interface version number required by the plugin.
- *
- * REQUIRED: NO
- *
- * RETURN VALUE
- *
- * The minimum OpenVPN plugin interface version number necessary to support
- * this plugin.
- */
-OPENVPN_PLUGIN_DEF int OPENVPN_PLUGIN_FUNC(openvpn_plugin_min_version_required_v1)
- (void);
-
-/*
- * Deprecated functions which are still supported for backward compatibility.
- */
-
-OPENVPN_PLUGIN_DEF openvpn_plugin_handle_t OPENVPN_PLUGIN_FUNC(openvpn_plugin_open_v1)
- (unsigned int *type_mask,
- const char *argv[],
- const char *envp[]);
-
-OPENVPN_PLUGIN_DEF int OPENVPN_PLUGIN_FUNC(openvpn_plugin_func_v1)
- (openvpn_plugin_handle_t handle, const int type, const char *argv[], const char *envp[]);
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* OPENVPN_PLUGIN_H_ */
diff --git a/include/openvpn-plugin.h.in b/include/openvpn-plugin.h.in
index a604f1c..64b2088 100644
--- a/include/openvpn-plugin.h.in
+++ b/include/openvpn-plugin.h.in
@@ -26,7 +26,6 @@
#define OPENVPN_PLUGIN_VERSION 3
-#ifdef ENABLE_CRYPTO
#ifdef ENABLE_CRYPTO_MBEDTLS
#include <mbedtls/x509_crt.h>
#ifndef __OPENVPN_X509_CERT_T_DECLARED
@@ -40,7 +39,6 @@ typedef mbedtls_x509_crt openvpn_x509_cert_t;
typedef X509 openvpn_x509_cert_t;
#endif
#endif
-#endif
#include <stdarg.h>
#include <stddef.h>
@@ -118,20 +116,22 @@ extern "C" {
* FUNC: openvpn_plugin_client_destructor_v1 (top-level "generic" client)
* FUNC: openvpn_plugin_close_v1
*/
-#define OPENVPN_PLUGIN_UP 0
-#define OPENVPN_PLUGIN_DOWN 1
-#define OPENVPN_PLUGIN_ROUTE_UP 2
-#define OPENVPN_PLUGIN_IPCHANGE 3
-#define OPENVPN_PLUGIN_TLS_VERIFY 4
-#define OPENVPN_PLUGIN_AUTH_USER_PASS_VERIFY 5
-#define OPENVPN_PLUGIN_CLIENT_CONNECT 6
-#define OPENVPN_PLUGIN_CLIENT_DISCONNECT 7
-#define OPENVPN_PLUGIN_LEARN_ADDRESS 8
-#define OPENVPN_PLUGIN_CLIENT_CONNECT_V2 9
-#define OPENVPN_PLUGIN_TLS_FINAL 10
-#define OPENVPN_PLUGIN_ENABLE_PF 11
-#define OPENVPN_PLUGIN_ROUTE_PREDOWN 12
-#define OPENVPN_PLUGIN_N 13
+#define OPENVPN_PLUGIN_UP 0
+#define OPENVPN_PLUGIN_DOWN 1
+#define OPENVPN_PLUGIN_ROUTE_UP 2
+#define OPENVPN_PLUGIN_IPCHANGE 3
+#define OPENVPN_PLUGIN_TLS_VERIFY 4
+#define OPENVPN_PLUGIN_AUTH_USER_PASS_VERIFY 5
+#define OPENVPN_PLUGIN_CLIENT_CONNECT 6
+#define OPENVPN_PLUGIN_CLIENT_DISCONNECT 7
+#define OPENVPN_PLUGIN_LEARN_ADDRESS 8
+#define OPENVPN_PLUGIN_CLIENT_CONNECT_V2 9
+#define OPENVPN_PLUGIN_TLS_FINAL 10
+#define OPENVPN_PLUGIN_ENABLE_PF 11
+#define OPENVPN_PLUGIN_ROUTE_PREDOWN 12
+#define OPENVPN_PLUGIN_CLIENT_CONNECT_DEFER 13
+#define OPENVPN_PLUGIN_CLIENT_CONNECT_DEFER_V2 14
+#define OPENVPN_PLUGIN_N 15
/*
* Build a mask out of a set of plug-in types.
@@ -423,9 +423,9 @@ struct openvpn_plugin_args_open_return
* per_client_context : the per-client context pointer which was returned by
* openvpn_plugin_client_constructor_v1, if defined.
*
- * current_cert_depth : Certificate depth of the certificate being passed over (only if compiled with ENABLE_CRYPTO defined)
+ * current_cert_depth : Certificate depth of the certificate being passed over
*
- * *current_cert : X509 Certificate object received from the client (only if compiled with ENABLE_CRYPTO defined)
+ * *current_cert : X509 Certificate object received from the client
*
*/
struct openvpn_plugin_args_func_in
@@ -435,13 +435,8 @@ struct openvpn_plugin_args_func_in
const char **const envp;
openvpn_plugin_handle_t handle;
void *per_client_context;
-#ifdef ENABLE_CRYPTO
int current_cert_depth;
openvpn_x509_cert_t *current_cert;
-#else
- int __current_cert_depth_disabled; /* Unused, for compatibility purposes only */
- void *__current_cert_disabled; /* Unused, for compatibility purposes only */
-#endif
};
@@ -562,12 +557,21 @@ OPENVPN_PLUGIN_DEF openvpn_plugin_handle_t OPENVPN_PLUGIN_FUNC(openvpn_plugin_op
* OPENVPN_PLUGIN_FUNC_SUCCESS on success, OPENVPN_PLUGIN_FUNC_ERROR on failure
*
* In addition, OPENVPN_PLUGIN_FUNC_DEFERRED may be returned by
- * OPENVPN_PLUGIN_AUTH_USER_PASS_VERIFY. This enables asynchronous
- * authentication where the plugin (or one of its agents) may indicate
- * authentication success/failure some number of seconds after the return
- * of the OPENVPN_PLUGIN_AUTH_USER_PASS_VERIFY handler by writing a single
- * char to the file named by auth_control_file in the environmental variable
- * list (envp).
+ * OPENVPN_PLUGIN_AUTH_USER_PASS_VERIFY, OPENVPN_PLUGIN_CLIENT_CONNECT and
+ * OPENVPN_PLUGIN_CLIENT_CONNECT_V2. This enables asynchronous
+ * authentication or client connect where the plugin (or one of its agents)
+ * may indicate authentication success/failure or client configuration some
+ * number of seconds after the return of the function handler.
+ * For OPENVPN_PLUGIN_AUTH_USER_PASS_VERIFY and OPENVPN_PLUGIN_CLIENT_CONNECT
+ * this is done by writing a single char to the file named by
+ * auth_control_file/client_connect_deferred_file
+ * in the environmental variable list (envp).
+ *
+ * In addition the OPENVPN_PLUGIN_CLIENT_CONNECT_DEFER and
+ * OPENVPN_PLUGIN_CLIENT_CONNECT_DEFER_V2 are called when OpenVPN tries to
+ * get the deferred result. For a V2 call implementing this function is
+ * required as information is not passed by files. For the normal version
+ * the call is optional.
*
* first char of auth_control_file:
* '0' -- indicates auth failure