/*
* 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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#elif defined(_MSC_VER)
#include "config-msvc.h"
#endif
#ifdef HAVE_CONFIG_VERSION_H
#include "config-version.h"
#endif
#include "syshead.h"
#ifdef ENABLE_PLUGIN
#ifdef HAVE_DLFCN_H
#include <dlfcn.h>
#endif
#include "buffer.h"
#include "error.h"
#include "misc.h"
#include "plugin.h"
#include "ssl_backend.h"
#include "base64.h"
#include "win32.h"
#include "memdbg.h"
#define PLUGIN_SYMBOL_REQUIRED (1<<0)
/* used only for program aborts */
static struct plugin_common *static_plugin_common = NULL; /* GLOBAL */
static void
plugin_show_string_array(int msglevel, const char *name, const char *array[])
{
int i;
for (i = 0; array[i]; ++i)
{
if (env_safe_to_print(array[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_CONNECT_V2:
return "PLUGIN_CLIENT_CONNECT";
case OPENVPN_PLUGIN_CLIENT_DISCONNECT:
return "PLUGIN_CLIENT_DISCONNECT";
case OPENVPN_PLUGIN_LEARN_ADDRESS:
return "PLUGIN_LEARN_ADDRESS";
case OPENVPN_PLUGIN_TLS_FINAL:
return "PLUGIN_TLS_FINAL";
case OPENVPN_PLUGIN_ENABLE_PF:
return "PLUGIN_ENABLE_PF";
case OPENVPN_PLUGIN_ROUTE_PREDOWN:
return "PLUGIN_ROUTE_PREDOWN";
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, char **p, struct gc_arena *gc)
{
if (list->n < MAX_PLUGINS)
{
struct plugin_option *o = &list->plugins[list->n++];
o->argv = make_extended_arg_array(p, gc);
if (o->argv[0])
{
o->so_pathname = o->argv[0];
}
return true;
}
else
{
return false;
}
}
#ifndef ENABLE_SMALL
void
plugin_option_list_print(const struct plugin_option_list *list, int msglevel)
{
int i;
struct gc_arena gc = gc_new();
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, print_argv(o->argv, &gc, PA_BRACKET));
}
gc_free(&gc);
}
#endif
#ifndef _WIN32
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());
}
}
#else /* ifndef _WIN32 */
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 /* ifndef _WIN32 */
static void
plugin_init_item(struct plugin *p, const struct plugin_option *o)
{
struct gc_arena gc = gc_new();
bool rel = false;
p->so_pathname = o->so_pathname;
p->plugin_type_mask = plugin_supported_types();
#ifndef _WIN32
p->handle = NULL;
/* If the plug-in filename is not an absolute path,
* or beginning with '.', it should use the PLUGIN_LIBDIR
* as the base directory for loading the plug-in.
*
* This means the following scenarios are loaded from these places:
* --plugin fancyplug.so -> $PLUGIN_LIBDIR/fancyplug.so
* --plugin my/fancyplug.so -> $PLUGIN_LIBDIR/my/fancyplug.so
* --plugin ./fancyplug.so -> $CWD/fancyplug.so
* --plugin /usr/lib/my/fancyplug.so -> /usr/lib/my/fancyplug.so
*
* Please note that $CWD means the directory OpenVPN is either started from
* or the directory OpenVPN have changed into using --cd before --plugin
* was parsed.
*
*/
if (!platform_absolute_pathname(p->so_pathname)
&& p->so_pathname[0] != '.')
{
char full[PATH_MAX];
openvpn_snprintf(full, sizeof(full), "%s/%s", PLUGIN_LIBDIR, p->so_pathname);
p->handle = dlopen(full, RTLD_NOW);
}
else
{
rel = !platform_absolute_pathname(p->so_pathname);
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());
}
#define PLUGIN_SYM(var, name, flags) libdl_resolve_symbol(p->handle, (void *)&p->var, name, p->so_pathname, flags)
#else /* ifndef _WIN32 */
rel = !platform_absolute_pathname(p->so_pathname);
p->module = LoadLibraryW(wide_string(p->so_pathname, &gc));
if (!p->module)
{
msg(M_ERR, "PLUGIN_INIT: could not load plugin DLL: %s", p->so_pathname);
}
#define PLUGIN_SYM(var, name, flags) dll_resolve_symbol(p->module, (void *)&p->var, name, p->so_pathname, flags)
#endif /* ifndef _WIN32 */
PLUGIN_SYM(open1, "openvpn_plugin_open_v1", 0);
PLUGIN_SYM(open2, "openvpn_plugin_open_v2", 0);
PLUGIN_SYM(open3, "openvpn_plugin_open_v3", 0);
PLUGIN_SYM(func1, "openvpn_plugin_func_v1", 0);
PLUGIN_SYM(func2, "openvpn_plugin_func_v2", 0);
PLUGIN_SYM(func3, "openvpn_plugin_func_v3", 0);
PLUGIN_SYM(close, "openvpn_plugin_close_v1", PLUGIN_SYMBOL_REQUIRED);
PLUGIN_SYM(abort, "openvpn_plugin_abort_v1", 0);
PLUGIN_SYM(client_constructor, "openvpn_plugin_client_constructor_v1", 0);
PLUGIN_SYM(client_destructor, "openvpn_plugin_client_destructor_v1", 0);
PLUGIN_SYM(min_version_required, "openvpn_plugin_min_version_required_v1", 0);
PLUGIN_SYM(initialization_point, "openvpn_plugin_select_initialization_point_v1", 0);
if (!p->open1 && !p->open2 && !p->open3)
{
msg(M_FATAL, "PLUGIN: symbol openvpn_plugin_open_vX is undefined in plugin: %s", p->so_pathname);
}
if (!p->func1 && !p->func2 && !p->func3)
{
msg(M_FATAL, "PLUGIN: symbol openvpn_plugin_func_vX is undefined in plugin: %s", p->so_pathname);
}
/*
* Verify that we are sufficiently up-to-date to handle the plugin
*/
if (p->min_version_required)
{
const int plugin_needs_version = (*p->min_version_required)();
if (plugin_needs_version > OPENVPN_PLUGIN_VERSION)
{
msg(M_FATAL, "PLUGIN_INIT: plugin needs interface version %d, but this version of OpenVPN only supports version %d: %s",
plugin_needs_version,
OPENVPN_PLUGIN_VERSION,
p->so_pathname);
}
}
if (p->initialization_point)
{
p->requested_initialization_point = (*p->initialization_point)();
}
else
{
p->requested_initialization_point = OPENVPN_PLUGIN_INIT_PRE_DAEMON;
}
if (rel)
{
msg(M_WARN, "WARNING: plugin '%s' specified by a relative pathname -- using an absolute pathname would be more secure", p->so_pathname);
}
p->initialized = true;
gc_free(&gc);
}
static void
plugin_vlog(openvpn_plugin_log_flags_t flags, const char *name, const char *format, va_list arglist)
{
unsigned int msg_flags = 0;
if (!format)
{
return;
}
if (!name || name[0] == '\0')
{
msg(D_PLUGIN_DEBUG, "PLUGIN: suppressed log message from plugin with unknown name");
return;
}
if (flags & PLOG_ERR)
{
msg_flags = M_INFO | M_NONFATAL;
}
else if (flags & PLOG_WARN)
{
msg_flags = M_INFO | M_WARN;
}
else if (flags & PLOG_NOTE)
{
msg_flags = M_INFO;
}
else if (flags & PLOG_DEBUG)
{
msg_flags = D_PLUGIN_DEBUG;
}
if (flags & PLOG_ERRNO)
{
msg_flags |= M_ERRNO;
}
if (flags & PLOG_NOMUTE)
{
msg_flags |= M_NOMUTE;
}
if (msg_test(msg_flags))
{
struct gc_arena gc;
char *msg_fmt;
/* Never add instance prefix; not thread safe */
msg_flags |= M_NOIPREFIX;
gc_init(&gc);
msg_fmt = gc_malloc(ERR_BUF_SIZE, false, &gc);
openvpn_snprintf(msg_fmt, ERR_BUF_SIZE, "PLUGIN %s: %s", name, format);
x_msg_va(msg_flags, msg_fmt, arglist);
gc_free(&gc);
}
}
static void
plugin_log(openvpn_plugin_log_flags_t flags, const char *name, const char *format, ...)
{
va_list arglist;
va_start(arglist, format);
plugin_vlog(flags, name, format, arglist);
va_end(arglist);
}
static struct openvpn_plugin_callbacks callbacks = {
plugin_log,
plugin_vlog,
secure_memzero, /* plugin_secure_memzero */
openvpn_base64_encode, /* plugin_base64_encode */
openvpn_base64_decode, /* plugin_base64_decode */
};
/* Provide a wrapper macro for a version patch level string to plug-ins.
* This is located here purely to not make the code too messy with #ifndef
* inside a struct declaration
*/
#ifndef CONFIGURE_GIT_REVISION
#define _OPENVPN_PATCH_LEVEL OPENVPN_VERSION_PATCH
#else
#define _OPENVPN_PATCH_LEVEL "git:" CONFIGURE_GIT_REVISION CONFIGURE_GIT_FLAGS
#endif
static void
plugin_open_item(struct plugin *p,
const struct plugin_option *o,
struct openvpn_plugin_string_list **retlist,
const char **envp,
const int init_point)
{
ASSERT(p->initialized);
/* clear return list */
if (retlist)
{
*retlist = NULL;
}
if (!p->plugin_handle && init_point == p->requested_initialization_point)
{
struct gc_arena gc = gc_new();
dmsg(D_PLUGIN_DEBUG, "PLUGIN_INIT: PRE");
plugin_show_args_env(D_PLUGIN_DEBUG, o->argv, envp);
/*
* Call the plugin initialization
*/
if (p->open3)
{
struct openvpn_plugin_args_open_in args = { p->plugin_type_mask,
(const char **const) o->argv,
(const char **const) envp,
&callbacks,
SSLAPI,
PACKAGE_VERSION,
OPENVPN_VERSION_MAJOR,
OPENVPN_VERSION_MINOR,
_OPENVPN_PATCH_LEVEL};
struct openvpn_plugin_args_open_return retargs;
CLEAR(retargs);
retargs.return_list = retlist;
if ((*p->open3)(OPENVPN_PLUGINv3_STRUCTVER, &args, &retargs) == OPENVPN_PLUGIN_FUNC_SUCCESS)
{
p->plugin_type_mask = retargs.type_mask;
p->plugin_handle = retargs.handle;
}
else
{
p->plugin_handle = NULL;
}
}
else if (p->open2)
{
p->plugin_handle = (*p->open2)(&p->plugin_type_mask, o->argv, envp, retlist);
}
else if (p->open1)
{
p->plugin_handle = (*p->open1)(&p->plugin_type_mask, o->argv, envp);
}
else
{
ASSERT(0);
}
msg(D_PLUGIN, "PLUGIN_INIT: POST %s '%s' intercepted=%s %s",
p->so_pathname,
print_argv(o->argv, &gc, PA_BRACKET),
plugin_mask_string(p->plugin_type_mask, &gc),
(retlist && *retlist) ? "[RETLIST]" : "");
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,
void *per_client_context,
const int type,
const struct argv *av,
struct openvpn_plugin_string_list **retlist,
const char **envp,
int certdepth,
openvpn_x509_cert_t *current_cert
)
{
int status = OPENVPN_PLUGIN_FUNC_SUCCESS;
/* clear return list */
if (retlist)
{
*retlist = NULL;
}
if (p->plugin_handle && (p->plugin_type_mask & OPENVPN_PLUGIN_MASK(type)))
{
struct gc_arena gc = gc_new();
struct argv a = argv_insert_head(av, p->so_pathname);
dmsg(D_PLUGIN_DEBUG, "PLUGIN_CALL: PRE type=%s", plugin_type_name(type));
plugin_show_args_env(D_PLUGIN_DEBUG, (const char **)a.argv, envp);
/*
* Call the plugin work function
*/
if (p->func3)
{
struct openvpn_plugin_args_func_in args = { type,
(const char **const) a.argv,
(const char **const) envp,
p->plugin_handle,
per_client_context,
(current_cert ? certdepth : -1),
current_cert
};
struct openvpn_plugin_args_func_return retargs;
CLEAR(retargs);
retargs.return_list = retlist;
status = (*p->func3)(OPENVPN_PLUGINv3_STRUCTVER, &args, &retargs);
}
else if (p->func2)
{
status = (*p->func2)(p->plugin_handle, type, (const char **)a.argv, envp, per_client_context, retlist);
}
else if (p->func1)
{
status = (*p->func1)(p->plugin_handle, type, (const char **)a.argv, envp);
}
else
{
ASSERT(0);
}
msg(D_PLUGIN, "PLUGIN_CALL: POST %s/%s status=%d",
p->so_pathname,
plugin_type_name(type),
status);
if (status == OPENVPN_PLUGIN_FUNC_ERROR)
{
msg(M_WARN, "PLUGIN_CALL: plugin function %s failed with status %d: %s",
plugin_type_name(type),
status,
p->so_pathname);
}
argv_reset(&a);
gc_free(&gc);
}
return status;
}
static void
plugin_close_item(struct plugin *p)
{
if (p->initialized)
{
msg(D_PLUGIN, "PLUGIN_CLOSE: %s", p->so_pathname);
/*
* Call the plugin close function
*/
if (p->plugin_handle)
{
(*p->close)(p->plugin_handle);
}
#ifndef _WIN32
if (dlclose(p->handle))
{
msg(M_WARN, "PLUGIN_CLOSE: dlclose() failed on plugin: %s", p->so_pathname);
}
#elif defined(_WIN32)
if (!FreeLibrary(p->module))
{
msg(M_WARN, "PLUGIN_CLOSE: FreeLibrary() failed on plugin: %s", p->so_pathname);
}
#endif
p->initialized = false;
}
}
static void
plugin_abort_item(const struct plugin *p)
{
/*
* Call the plugin abort function
*/
if (p->abort)
{
(*p->abort)(p->plugin_handle);
}
}
static void
plugin_per_client_init(const struct plugin_common *pc,
struct plugin_per_client *cli,
const int init_point)
{
const int n = pc->n;
int i;
for (i = 0; i < n; ++i)
{
const struct plugin *p = &pc->plugins[i];
if (p->plugin_handle
&& (init_point < 0 || init_point == p->requested_initialization_point)
&& p->client_constructor)
{
cli->per_client_context[i] = (*p->client_constructor)(p->plugin_handle);
}
}
}
static void
plugin_per_client_destroy(const struct plugin_common *pc, struct plugin_per_client *cli)
{
const int n = pc->n;
int i;
for (i = 0; i < n; ++i)
{
const struct plugin *p = &pc->plugins[i];
void *cc = cli->per_client_context[i];
if (p->client_destructor && cc)
{
(*p->client_destructor)(p->plugin_handle, cc);
}
}
CLEAR(*cli);
}
struct plugin_list *
plugin_list_inherit(const struct plugin_list *src)
{
struct plugin_list *pl;
ALLOC_OBJ_CLEAR(pl, struct plugin_list);
pl->common = src->common;
ASSERT(pl->common);
plugin_per_client_init(pl->common, &pl->per_client, -1);
return pl;
}
static struct plugin_common *
plugin_common_init(const struct plugin_option_list *list)
{
int i;
struct plugin_common *pc;
ALLOC_OBJ_CLEAR(pc, struct plugin_common);
for (i = 0; i < list->n; ++i)
{
plugin_init_item(&pc->plugins[i],
&list->plugins[i]);
pc->n = i + 1;
}
static_plugin_common = pc;
return pc;
}
static void
plugin_common_open(struct plugin_common *pc,
const struct plugin_option_list *list,
struct plugin_return *pr,
const struct env_set *es,
const int init_point)
{
struct gc_arena gc = gc_new();
int i;
const char **envp;
envp = make_env_array(es, false, &gc);
if (pr)
{
plugin_return_init(pr);
}
for (i = 0; i < pc->n; ++i)
{
plugin_open_item(&pc->plugins[i],
&list->plugins[i],
pr ? &pr->list[i] : NULL,
envp,
init_point);
}
if (pr)
{
pr->n = i;
}
gc_free(&gc);
}
static void
plugin_common_close(struct plugin_common *pc)
{
static_plugin_common = NULL;
if (pc)
{
int i;
for (i = 0; i < pc->n; ++i)
{
plugin_close_item(&pc->plugins[i]);
}
free(pc);
}
}
struct plugin_list *
plugin_list_init(const struct plugin_option_list *list)
{
struct plugin_list *pl;
ALLOC_OBJ_CLEAR(pl, struct plugin_list);
pl->common = plugin_common_init(list);
pl->common_owned = true;
return pl;
}
void
plugin_list_open(struct plugin_list *pl,
const struct plugin_option_list *list,
struct plugin_return *pr,
const struct env_set *es,
const int init_point)
{
plugin_common_open(pl->common, list, pr, es, init_point);
plugin_per_client_init(pl->common, &pl->per_client, init_point);
}
int
plugin_call_ssl(const struct plugin_list *pl,
const int type,
const struct argv *av,
struct plugin_return *pr,
struct env_set *es,
int certdepth,
openvpn_x509_cert_t *current_cert
)
{
if (pr)
{
plugin_return_init(pr);
}
if (plugin_defined(pl, type))
{
struct gc_arena gc = gc_new();
int i;
const char **envp;
const int n = plugin_n(pl);
bool success = false;
bool error = false;
bool deferred = false;
setenv_del(es, "script_type");
envp = make_env_array(es, false, &gc);
for (i = 0; i < n; ++i)
{
const int status = plugin_call_item(&pl->common->plugins[i],
pl->per_client.per_client_context[i],
type,
av,
pr ? &pr->list[i] : NULL,
envp,
certdepth,
current_cert
);
switch (status)
{
case OPENVPN_PLUGIN_FUNC_SUCCESS:
success = true;
break;
case OPENVPN_PLUGIN_FUNC_DEFERRED:
deferred = true;
break;
default:
error = true;
break;
}
}
if (pr)
{
pr->n = i;
}
gc_free(&gc);
if (type == OPENVPN_PLUGIN_ENABLE_PF && success)
{
return OPENVPN_PLUGIN_FUNC_SUCCESS;
}
else if (error)
{
return OPENVPN_PLUGIN_FUNC_ERROR;
}
else if (deferred)
{
return OPENVPN_PLUGIN_FUNC_DEFERRED;
}
}
return OPENVPN_PLUGIN_FUNC_SUCCESS;
}
void
plugin_list_close(struct plugin_list *pl)
{
if (pl)
{
if (pl->common)
{
plugin_per_client_destroy(pl->common, &pl->per_client);
if (pl->common_owned)
{
plugin_common_close(pl->common);
}
}
free(pl);
}
}
void
plugin_abort(void)
{
struct plugin_common *pc = static_plugin_common;
static_plugin_common = NULL;
if (pc)
{
int i;
for (i = 0; i < pc->n; ++i)
{
plugin_abort_item(&pc->plugins[i]);
}
}
}
bool
plugin_defined(const struct plugin_list *pl, const int type)
{
bool ret = false;
if (pl)
{
const struct plugin_common *pc = pl->common;
if (pc)
{
int i;
const unsigned int mask = OPENVPN_PLUGIN_MASK(type);
for (i = 0; i < pc->n; ++i)
{
if (pc->plugins[i].plugin_type_mask & mask)
{
ret = true;
break;
}
}
}
}
return ret;
}
/*
* Plugin return functions
*/
static void
openvpn_plugin_string_list_item_free(struct openvpn_plugin_string_list *l)
{
if (l)
{
free(l->name);
string_clear(l->value);
free(l->value);
free(l);
}
}
static void
openvpn_plugin_string_list_free(struct openvpn_plugin_string_list *l)
{
struct openvpn_plugin_string_list *next;
while (l)
{
next = l->next;
openvpn_plugin_string_list_item_free(l);
l = next;
}
}
static struct openvpn_plugin_string_list *
openvpn_plugin_string_list_find(struct openvpn_plugin_string_list *l, const char *name)
{
while (l)
{
if (!strcmp(l->name, name))
{
return l;
}
l = l->next;
}
return NULL;
}
void
plugin_return_get_column(const struct plugin_return *src,
struct plugin_return *dest,
const char *colname)
{
int i;
dest->n = 0;
for (i = 0; i < src->n; ++i)
{
dest->list[i] = openvpn_plugin_string_list_find(src->list[i], colname);
}
dest->n = i;
}
void
plugin_return_free(struct plugin_return *pr)
{
int i;
for (i = 0; i < pr->n; ++i)
{
openvpn_plugin_string_list_free(pr->list[i]);
}
pr->n = 0;
}
#ifdef ENABLE_DEBUG
void
plugin_return_print(const int msglevel, const char *prefix, const struct plugin_return *pr)
{
int i;
msg(msglevel, "PLUGIN_RETURN_PRINT %s", prefix);
for (i = 0; i < pr->n; ++i)
{
struct openvpn_plugin_string_list *l = pr->list[i];
int count = 0;
msg(msglevel, "PLUGIN #%d (%s)", i, prefix);
while (l)
{
msg(msglevel, "[%d] '%s' -> '%s'\n",
++count,
l->name,
l->value);
l = l->next;
}
}
}
#endif /* ifdef ENABLE_DEBUG */
#else /* ifdef ENABLE_PLUGIN */
static void
dummy(void)
{
}
#endif /* ENABLE_PLUGIN */