load.c
2.96 KB
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/* GNU Mailutils -- a suite of utilities for electronic mail
Copyright (C) 1999, 2000, 2001, 2002, 2005,
2007 Free Software Foundation, Inc.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General
Public License along with this library; 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>
#endif
#ifdef HAVE_LIBLTDL
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <sieve.h>
#include <ltdl.h>
typedef int (*sieve_module_init_t) (mu_sieve_machine_t mach);
static void
_free_loaded_module (void *data)
{
lt_dlclose ((lt_dlhandle)data);
lt_dlexit ();
}
static lt_dlhandle
load_module (mu_sieve_machine_t mach, const char *name)
{
lt_dlhandle handle;
if (lt_dlinit ())
return NULL;
handle = lt_dlopenext (name);
if (handle)
{
sieve_module_init_t init = (sieve_module_init_t)
lt_dlsym (handle, "init");
if (init)
{
init (mach);
mu_sieve_machine_add_destructor (mach, _free_loaded_module, handle);
return handle;
}
else
{
lt_dlclose (handle);
handle = NULL;
}
}
if (!handle)
{
mu_sieve_error (mach, "%s", lt_dlerror ());
lt_dlexit ();
}
return handle;
}
static void
fix_module_name (char *name)
{
for (; *name; name++)
{
if (isalnum (*name) || *name == '.' || *name == ',')
continue;
*name = '-';
}
}
int
mu_sieve_load_ext (mu_sieve_machine_t mach, const char *name)
{
lt_dlhandle handle;
char *modname;
modname = strdup (name);
if (!modname)
return 1;
fix_module_name (modname);
handle = load_module (mach, modname);
free (modname);
return handle == NULL;
}
static int
_add_load_dir (void *item, void *unused)
{
return lt_dladdsearchdir (item);
}
int
sieve_load_add_path (mu_list_t path)
{
if (lt_dlinit ())
return 1;
return mu_list_do (path, _add_load_dir, NULL);
}
int
sieve_load_add_dir (mu_sieve_machine_t mach, const char *name)
{
if (lt_dlinit ())
return 1;
mu_sieve_machine_add_destructor (mach, (mu_sieve_destructor_t) lt_dlexit, NULL);
return lt_dladdsearchdir (name);
}
#else
#include <sieve.h>
int
mu_sieve_load_ext (mu_sieve_machine_t mach, const char *name)
{
return 1;
}
int
sieve_load_add_path (mu_list_t path)
{
return 1;
}
int
sieve_load_add_dir (mu_sieve_machine_t mach, const char *name)
{
return 1;
}
#endif /* HAVE_LIBLTDL */