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authorChristian Pointner <equinox@anytun.org>2008-05-20 14:36:04 +0000
committerChristian Pointner <equinox@anytun.org>2008-05-20 14:36:04 +0000
commitb2f54ec4947b60b9d989cb887f6c62c93a738e02 (patch)
treed32b3f7427c836adfaea53e0a16fd43585e79879 /src/openvpn/plugin.c
parentadded -i option to anyrtpproxy (diff)
removed openvpn source code
Diffstat (limited to 'src/openvpn/plugin.c')
-rw-r--r--src/openvpn/plugin.c394
1 files changed, 0 insertions, 394 deletions
diff --git a/src/openvpn/plugin.c b/src/openvpn/plugin.c
deleted file mode 100644
index f0d14ba..0000000
--- a/src/openvpn/plugin.c
+++ /dev/null
@@ -1,394 +0,0 @@
-/*
- * 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
- */
-
-#ifdef WIN32
-#include "config-win32.h"
-#else
-#include "config.h"
-#endif
-
-#include "syshead.h"
-
-#ifdef ENABLE_PLUGIN
-
-#include "buffer.h"
-#include "error.h"
-#include "misc.h"
-#include "plugin.h"
-
-#include "memdbg.h"
-
-#define PLUGIN_SYMBOL_REQUIRED (1<<0)
-
-/* used only for program aborts */
-static struct plugin_list *static_plugin_list = NULL; /* GLOBAL */
-
-static void
-plugin_show_string_array (int msglevel, const char *name, const char *array[])
-{
- int i;
- for (i = 0; array[i]; ++i)
- msg (msglevel, "%s[%d] = '%s'", name, i, array[i]);
-}
-
-static void
-plugin_show_args_env (int msglevel, const char *argv[], const char *envp[])
-{
- if (check_debug_level (msglevel))
- {
- plugin_show_string_array (msglevel, "ARGV", argv);
- plugin_show_string_array (msglevel, "ENVP", envp);
- }
-}
-
-static const char *
-plugin_type_name (const int type)
-{
- switch (type)
- {
- case OPENVPN_PLUGIN_UP:
- return "PLUGIN_UP";
- case OPENVPN_PLUGIN_DOWN:
- return "PLUGIN_DOWN";
- case OPENVPN_PLUGIN_ROUTE_UP:
- return "PLUGIN_ROUTE_UP";
- case OPENVPN_PLUGIN_IPCHANGE:
- return "PLUGIN_IPCHANGE";
- case OPENVPN_PLUGIN_TLS_VERIFY:
- return "PLUGIN_TLS_VERIFY";
- case OPENVPN_PLUGIN_AUTH_USER_PASS_VERIFY:
- return "PLUGIN_AUTH_USER_PASS_VERIFY";
- case OPENVPN_PLUGIN_CLIENT_CONNECT:
- return "PLUGIN_CLIENT_CONNECT";
- case OPENVPN_PLUGIN_CLIENT_DISCONNECT:
- return "PLUGIN_CLIENT_DISCONNECT";
- case OPENVPN_PLUGIN_LEARN_ADDRESS:
- return "PLUGIN_LEARN_ADDRESS";
- default:
- return "PLUGIN_???";
- }
-}
-
-static const char *
-plugin_mask_string (const unsigned int type_mask, struct gc_arena *gc)
-{
- struct buffer out = alloc_buf_gc (256, gc);
- bool first = true;
- int i;
-
- for (i = 0; i < OPENVPN_PLUGIN_N; ++i)
- {
- if (OPENVPN_PLUGIN_MASK (i) & type_mask)
- {
- if (!first)
- buf_printf (&out, "|");
- buf_printf (&out, "%s", plugin_type_name (i));
- first = false;
- }
- }
- return BSTR (&out);
-}
-
-static inline unsigned int
-plugin_supported_types (void)
-{
- return ((1<<OPENVPN_PLUGIN_N)-1);
-}
-
-struct plugin_option_list *
-plugin_option_list_new (struct gc_arena *gc)
-{
- struct plugin_option_list *ret;
- ALLOC_OBJ_CLEAR_GC (ret, struct plugin_option_list, gc);
- return ret;
-}
-
-bool
-plugin_option_list_add (struct plugin_option_list *list, const char *so_pathname, const char *args)
-{
- if (list->n < MAX_PLUGINS)
- {
- struct plugin_option *o = &list->plugins[list->n++];
- o->so_pathname = so_pathname;
- o->args = args;
- return true;
- }
- else
- return false;
-}
-
-#ifdef ENABLE_DEBUG
-void
-plugin_option_list_print (const struct plugin_option_list *list, int msglevel)
-{
- int i;
- for (i = 0; i < list->n; ++i)
- {
- const struct plugin_option *o = &list->plugins[i];
- msg (msglevel, " plugin[%d] %s '%s'", i, o->so_pathname, o->args);
- }
-}
-#endif
-
-#if defined(USE_LIBDL)
-
-static void
-libdl_resolve_symbol (void *handle, void **dest, const char *symbol, const char *plugin_name, const unsigned int flags)
-{
- *dest = dlsym (handle, symbol);
- if ((flags & PLUGIN_SYMBOL_REQUIRED) && !*dest)
- msg (M_FATAL, "PLUGIN: could not find required symbol '%s' in plugin shared object %s: %s", symbol, plugin_name, dlerror());
-}
-
-#elif defined(USE_LOAD_LIBRARY)
-
-static void
-dll_resolve_symbol (HMODULE module, void **dest, const char *symbol, const char *plugin_name, const unsigned int flags)
-{
- *dest = GetProcAddress (module, symbol);
- if ((flags & PLUGIN_SYMBOL_REQUIRED) && !*dest)
- msg (M_FATAL, "PLUGIN: could not find required symbol '%s' in plugin DLL %s", symbol, plugin_name);
-}
-
-#endif
-
-static void
-plugin_init_item (struct plugin *p, const struct plugin_option *o, const char **envp)
-{
- struct gc_arena gc = gc_new ();
- const char **argv = make_arg_array (o->so_pathname, o->args, &gc);
- p->so_pathname = o->so_pathname;
- p->plugin_type_mask = plugin_supported_types ();
-
-#if defined(USE_LIBDL)
- p->handle = dlopen (p->so_pathname, RTLD_NOW);
- if (!p->handle)
- msg (M_ERR, "PLUGIN_INIT: could not load plugin shared object %s: %s", p->so_pathname, dlerror());
- libdl_resolve_symbol (p->handle, (void*)&p->open, "openvpn_plugin_open_v1", p->so_pathname, PLUGIN_SYMBOL_REQUIRED);
- libdl_resolve_symbol (p->handle, (void*)&p->func, "openvpn_plugin_func_v1", p->so_pathname, PLUGIN_SYMBOL_REQUIRED);
- libdl_resolve_symbol (p->handle, (void*)&p->close, "openvpn_plugin_close_v1", p->so_pathname, PLUGIN_SYMBOL_REQUIRED);
- libdl_resolve_symbol (p->handle, (void*)&p->abort, "openvpn_plugin_abort_v1", p->so_pathname, 0);
-#elif defined(USE_LOAD_LIBRARY)
- p->module = LoadLibrary (p->so_pathname);
- if (!p->module)
- msg (M_ERR, "PLUGIN_INIT: could not load plugin DLL: %s", p->so_pathname);
- dll_resolve_symbol (p->module, (void*)&p->open, "openvpn_plugin_open_v1", p->so_pathname, PLUGIN_SYMBOL_REQUIRED);
- dll_resolve_symbol (p->module, (void*)&p->func, "openvpn_plugin_func_v1", p->so_pathname, PLUGIN_SYMBOL_REQUIRED);
- dll_resolve_symbol (p->module, (void*)&p->close, "openvpn_plugin_close_v1", p->so_pathname, PLUGIN_SYMBOL_REQUIRED);
- dll_resolve_symbol (p->module, (void*)&p->abort, "openvpn_plugin_abort_v1", p->so_pathname, 0);
-#endif
-
- dmsg (D_PLUGIN_DEBUG, "PLUGIN_INIT: PRE");
- plugin_show_args_env (D_PLUGIN_DEBUG, argv, envp);
-
- /*
- * Call the plugin initialization
- */
- p->plugin_handle = (*p->open)(&p->plugin_type_mask, argv, envp);
-
- msg (D_PLUGIN, "PLUGIN_INIT: POST %s '%s' intercepted=%s",
- p->so_pathname,
- o->args ? o->args : "[NULL]",
- plugin_mask_string (p->plugin_type_mask, &gc));
-
- if ((p->plugin_type_mask | plugin_supported_types()) != plugin_supported_types())
- msg (M_FATAL, "PLUGIN_INIT: plugin %s expressed interest in unsupported plugin types: [want=0x%08x, have=0x%08x]",
- p->so_pathname,
- p->plugin_type_mask,
- plugin_supported_types());
-
- if (p->plugin_handle == NULL)
- msg (M_FATAL, "PLUGIN_INIT: plugin initialization function failed: %s",
- p->so_pathname);
-
- gc_free (&gc);
-}
-
-static int
-plugin_call_item (const struct plugin *p, const int type, const char *args, const char **envp)
-{
- int status = OPENVPN_PLUGIN_FUNC_SUCCESS;
-
- if (p->plugin_type_mask & OPENVPN_PLUGIN_MASK (type))
- {
- struct gc_arena gc = gc_new ();
- const char **argv = make_arg_array (p->so_pathname, args, &gc);
-
- dmsg (D_PLUGIN_DEBUG, "PLUGIN_CALL: PRE type=%s", plugin_type_name (type));
- plugin_show_args_env (D_PLUGIN_DEBUG, argv, envp);
-
- /*
- * Call the plugin work function
- */
- status = (*p->func)(p->plugin_handle, type, argv, envp);
-
- msg (D_PLUGIN, "PLUGIN_CALL: POST %s/%s status=%d",
- p->so_pathname,
- plugin_type_name (type),
- status);
-
- if (status != OPENVPN_PLUGIN_FUNC_SUCCESS)
- msg (M_WARN, "PLUGIN_CALL: plugin function %s failed with status %d: %s",
- plugin_type_name (type),
- status,
- p->so_pathname);
-
- gc_free (&gc);
- }
- return status;
-}
-
-static void
-plugin_close_item (const struct plugin *p)
-{
- msg (D_PLUGIN, "PLUGIN_CLOSE: %s", p->so_pathname);
-
- /*
- * Call the plugin close function
- */
- (*p->close)(p->plugin_handle);
-
-#if defined(USE_LIBDL)
- if (dlclose (p->handle))
- msg (M_WARN, "PLUGIN_CLOSE: dlclose() failed on plugin: %s", p->so_pathname);
-#elif defined(USE_LOAD_LIBRARY)
- if (!FreeLibrary (p->module))
- msg (M_WARN, "PLUGIN_CLOSE: FreeLibrary() failed on plugin: %s", p->so_pathname);
-#endif
-}
-
-static void
-plugin_abort_item (const struct plugin *p)
-{
- /*
- * Call the plugin abort function
- */
- if (p->abort)
- (*p->abort)(p->plugin_handle);
-}
-
-struct plugin_list *
-plugin_list_open (const struct plugin_option_list *list, const struct env_set *es)
-{
- struct gc_arena gc = gc_new ();
- int i;
- struct plugin_list *pl;
- const char **envp;
-
- ALLOC_OBJ_CLEAR (pl, struct plugin_list);
- static_plugin_list = pl;
-
- envp = make_env_array (es, &gc);
-
- for (i = 0; i < list->n; ++i)
- {
- plugin_init_item (&pl->plugins[i], &list->plugins[i], envp);
- pl->n = i + 1;
- }
-
- gc_free (&gc);
- return pl;
-}
-
-int
-plugin_call (const struct plugin_list *pl, const int type, const char *args, struct env_set *es)
-{
- int count = 0;
-
- if (plugin_defined (pl, type))
- {
- struct gc_arena gc = gc_new ();
- int i;
- const char **envp;
-
- mutex_lock_static (L_PLUGIN);
-
- setenv_del (es, "script_type");
- envp = make_env_array (es, &gc);
-
- for (i = 0; i < pl->n; ++i)
- {
- if (!plugin_call_item (&pl->plugins[i], type, args, envp))
- ++count;
- }
-
- mutex_unlock_static (L_PLUGIN);
-
- gc_free (&gc);
- }
-
- return count == pl->n ? 0 : 1; /* if any one plugin in the chain failed, return failure (1) */
-}
-
-void
-plugin_list_close (struct plugin_list *pl)
-{
- static_plugin_list = NULL;
- if (pl)
- {
- int i;
-
- for (i = 0; i < pl->n; ++i)
- plugin_close_item (&pl->plugins[i]);
- free (pl);
- }
-}
-
-void
-plugin_abort (void)
-{
- struct plugin_list *pl = static_plugin_list;
- static_plugin_list = NULL;
- if (pl)
- {
- int i;
-
- for (i = 0; i < pl->n; ++i)
- plugin_abort_item (&pl->plugins[i]);
- }
-}
-
-bool
-plugin_defined (const struct plugin_list *pl, const int type)
-{
- bool ret = false;
- if (pl)
- {
- int i;
- const unsigned int mask = OPENVPN_PLUGIN_MASK (type);
- for (i = 0; i < pl->n; ++i)
- {
- if (pl->plugins[i].plugin_type_mask & mask)
- {
- ret = true;
- break;
- }
- }
- }
- return ret;
-}
-
-#else
-static void dummy(void) {}
-#endif /* ENABLE_PLUGIN */