/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 1998-2009 The OpenLDAP Foundation.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+
#include "portable.h"
#include <stdio.h>
#include "slap.h"
#include <ltdl.h>
-int load_null (const void *module, const char *file_name);
-int load_extension (const void *module, const char *file_name);
+typedef int (*MODULE_INIT_FN)(
+ int argc,
+ char *argv[]);
+typedef int (*MODULE_LOAD_FN)(
+ const void *module,
+ const char *filename);
+typedef int (*MODULE_TERM_FN)(void);
+
struct module_regtable_t {
char *type;
- int (*proc)(const void *module, const char *file_name);
+ MODULE_LOAD_FN proc;
} module_regtable[] = {
- { "null", load_null },
+ { "null", load_null_module },
#ifdef SLAPD_EXTERNAL_EXTENSIONS
- { "extension", load_extension },
+ { "extension", load_extop_module },
#endif
- { NULL, NULL }
- };
+ { NULL, NULL }
+};
typedef struct module_loaded_t {
struct module_loaded_t *next;
- lt_dlhandle *lib;
+ lt_dlhandle lib;
+ char name[1];
} module_loaded_t;
module_loaded_t *module_list = NULL;
-int module_unload (module_loaded_t *module);
+static int module_int_unload (module_loaded_t *module);
+
+#ifdef HAVE_EBCDIC
+static char ebuf[BUFSIZ];
+#endif
int module_init (void)
{
if (lt_dlinit()) {
const char *error = lt_dlerror();
+#ifdef HAVE_EBCDIC
+ strcpy( ebuf, error );
+ __etoa( ebuf );
+ error = ebuf;
+#endif
Debug(LDAP_DEBUG_ANY, "lt_dlinit failed: %s\n", error, 0, 0);
+
return -1;
}
- return 0;
+
+ return module_path( LDAP_MODULEDIR );
}
int module_kill (void)
{
/* unload all modules before shutdown */
while (module_list != NULL) {
- module_unload(module_list);
+ module_int_unload(module_list);
}
if (lt_dlexit()) {
const char *error = lt_dlerror();
+#ifdef HAVE_EBCDIC
+ strcpy( ebuf, error );
+ __etoa( ebuf );
+ error = ebuf;
+#endif
Debug(LDAP_DEBUG_ANY, "lt_dlexit failed: %s\n", error, 0, 0);
+
return -1;
}
return 0;
}
+void * module_handle( const char *file_name )
+{
+ module_loaded_t *module;
+
+ for ( module = module_list; module; module= module->next ) {
+ if ( !strcmp( module->name, file_name )) {
+ return module;
+ }
+ }
+ return NULL;
+}
+
+int module_unload( const char *file_name )
+{
+ module_loaded_t *module;
+
+ module = module_handle( file_name );
+ if ( module ) {
+ module_int_unload( module );
+ return 0;
+ }
+ return -1; /* not found */
+}
+
int module_load(const char* file_name, int argc, char *argv[])
{
- module_loaded_t *module = NULL;
+ module_loaded_t *module;
const char *error;
int rc;
- int (*initialize) LDAP_P((int argc, char *argv[]));
+ MODULE_INIT_FN initialize;
+#ifdef HAVE_EBCDIC
+#define file ebuf
+#else
+#define file file_name
+#endif
+
+ module = module_handle( file_name );
+ if ( module ) {
+ Debug( LDAP_DEBUG_ANY, "module_load: (%s) already loaded\n",
+ file_name, 0, 0 );
+ return -1;
+ }
+
+ /* If loading a backend, see if we already have it */
+ if ( !strncasecmp( file_name, "back_", 5 )) {
+ char *name = (char *)file_name + 5;
+ char *dot = strchr( name, '.');
+ if (dot) *dot = '\0';
+ rc = backend_info( name ) != NULL;
+ if (dot) *dot = '.';
+ if ( rc ) {
+ Debug( LDAP_DEBUG_CONFIG, "module_load: (%s) already present (static)\n",
+ file_name, 0, 0 );
+ return 0;
+ }
+ } else {
+ /* check for overlays too */
+ char *dot = strchr( file_name, '.' );
+ if ( dot ) *dot = '\0';
+ rc = overlay_find( file_name ) != NULL;
+ if ( dot ) *dot = '.';
+ if ( rc ) {
+ Debug( LDAP_DEBUG_CONFIG, "module_load: (%s) already present (static)\n",
+ file_name, 0, 0 );
+ return 0;
+ }
+ }
- module = (module_loaded_t *)ch_calloc(1, sizeof(module_loaded_t));
+ module = (module_loaded_t *)ch_calloc(1, sizeof(module_loaded_t) +
+ strlen(file_name));
if (module == NULL) {
Debug(LDAP_DEBUG_ANY, "module_load failed: (%s) out of memory\n", file_name,
0, 0);
+
return -1;
}
+ strcpy( module->name, file_name );
+#ifdef HAVE_EBCDIC
+ strcpy( file, file_name );
+ __atoe( file );
+#endif
/*
* The result of lt_dlerror(), when called, must be cached prior
* to calling Debug. This is because Debug is a macro that expands
* into multiple function calls.
*/
- if ((module->lib = lt_dlopen(file_name)) == NULL) {
+ if ((module->lib = lt_dlopenext(file)) == NULL) {
error = lt_dlerror();
- Debug(LDAP_DEBUG_ANY, "lt_dlopen failed: (%s) %s\n", file_name,
+#ifdef HAVE_EBCDIC
+ strcpy( ebuf, error );
+ __etoa( ebuf );
+ error = ebuf;
+#endif
+ Debug(LDAP_DEBUG_ANY, "lt_dlopenext failed: (%s) %s\n", file_name,
error, 0);
+
ch_free(module);
return -1;
}
Debug(LDAP_DEBUG_CONFIG, "loaded module %s\n", file_name, 0, 0);
+
+#ifdef HAVE_EBCDIC
+#pragma convlit(suspend)
+#endif
if ((initialize = lt_dlsym(module->lib, "init_module")) == NULL) {
+#ifdef HAVE_EBCDIC
+#pragma convlit(resume)
+#endif
Debug(LDAP_DEBUG_CONFIG, "module %s: no init_module() function found\n",
file_name, 0, 0);
+
lt_dlclose(module->lib);
ch_free(module);
return -1;
if (rc == -1) {
Debug(LDAP_DEBUG_CONFIG, "module %s: init_module() failed\n",
file_name, 0, 0);
+
lt_dlclose(module->lib);
ch_free(module);
return rc;
}
- if (rc >= (sizeof(module_regtable) / sizeof(struct module_regtable_t))
+ if (rc >= (int)(sizeof(module_regtable) / sizeof(struct module_regtable_t))
|| module_regtable[rc].proc == NULL)
{
Debug(LDAP_DEBUG_CONFIG, "module %s: unknown registration type (%d)\n",
file_name, rc, 0);
- module_unload(module);
+
+ module_int_unload(module);
return -1;
}
if (rc != 0) {
Debug(LDAP_DEBUG_CONFIG, "module %s: %s module could not be registered\n",
file_name, module_regtable[rc].type, 0);
- module_unload(module);
+
+ module_int_unload(module);
return rc;
}
Debug(LDAP_DEBUG_CONFIG, "module %s: %s module registered\n",
file_name, module_regtable[rc].type, 0);
+
return 0;
}
int module_path(const char *path)
{
+#ifdef HAVE_EBCDIC
+ strcpy(ebuf, path);
+ __atoe(ebuf);
+ path = ebuf;
+#endif
return lt_dlsetsearchpath( path );
}
void *module_resolve (const void *module, const char *name)
{
+#ifdef HAVE_EBCDIC
+ strcpy(ebuf, name);
+ __atoe(ebuf);
+ name = ebuf;
+#endif
if (module == NULL || name == NULL)
return(NULL);
return(lt_dlsym(((module_loaded_t *)module)->lib, name));
}
-int module_unload (module_loaded_t *module)
+static int module_int_unload (module_loaded_t *module)
{
module_loaded_t *mod;
- int (*terminate) LDAP_P((void));
+ MODULE_TERM_FN terminate;
if (module != NULL) {
/* remove module from tracking list */
}
/* call module's terminate routine, if present */
- if (terminate = lt_dlsym(module->lib, "term_module")) {
+#ifdef HAVE_EBCDIC
+#pragma convlit(suspend)
+#endif
+ if ((terminate = lt_dlsym(module->lib, "term_module"))) {
+#ifdef HAVE_EBCDIC
+#pragma convlit(resume)
+#endif
terminate();
}
return 0;
}
-int load_null (const void *module, const char *file_name)
+int load_null_module (const void *module, const char *file_name)
{
return 0;
}
+#ifdef SLAPD_EXTERNAL_EXTENSIONS
+int
+load_extop_module (
+ const void *module,
+ const char *file_name
+)
+{
+ SLAP_EXTOP_MAIN_FN *ext_main;
+ SLAP_EXTOP_GETOID_FN *ext_getoid;
+ struct berval oid;
+ int rc;
+
+ ext_main = (SLAP_EXTOP_MAIN_FN *)module_resolve(module, "ext_main");
+ if (ext_main == NULL) {
+ return(-1);
+ }
+
+ ext_getoid = module_resolve(module, "ext_getoid");
+ if (ext_getoid == NULL) {
+ return(-1);
+ }
+
+ rc = (ext_getoid)(0, &oid, 256);
+ if (rc != 0) {
+ return(rc);
+ }
+ if (oid.bv_val == NULL || oid.bv_len == 0) {
+ return(-1);
+ }
+
+ /* FIXME: this is broken, and no longer needed,
+ * as a module can call load_extop() itself... */
+ rc = load_extop( &oid, ext_main );
+ return rc;
+}
+#endif /* SLAPD_EXTERNAL_EXTENSIONS */
#endif /* SLAPD_MODULES */