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/*
Unix SMB/CIFS implementation.
COM class tables
Copyright (C) 2004 Jelmer Vernooij <jelmer@samba.org>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "includes.h"
#include "lib/util/dlinklist.h"
#include "lib/com/com.h"
#include "librpc/gen_ndr/ndr_misc.h"
/* Specific implementation of one or more interfaces */
struct com_class
{
const char *progid;
struct GUID clsid;
struct IUnknown *class_object;
struct com_class *prev, *next;
} * running_classes = NULL;
static struct IUnknown *get_com_class_running(const struct GUID *clsid)
{
struct com_class *c = running_classes;
while(c) {
if (GUID_equal(clsid, &c->clsid)) {
return c->class_object;
}
c = c->next;
}
return NULL;
}
static struct IUnknown *get_com_class_so(TALLOC_CTX *mem_ctx, const struct GUID *clsid)
{
char *mod_name;
char *clsid_str;
void *mod;
get_class_object_function f;
clsid_str = GUID_string(mem_ctx, clsid);
mod_name = talloc_asprintf(mem_ctx, "%s.so", clsid_str);
talloc_free(clsid_str);
mod = dlopen(mod_name, 0);
if (!mod) {
return NULL;
}
f = dlsym(mod, "get_class_object");
if (!f) {
return NULL;
}
return f(clsid);
}
struct IUnknown *com_class_by_clsid(struct com_context *ctx, const struct GUID *clsid)
{
struct IUnknown *c;
/* Check list of running COM classes first */
c = get_com_class_running(clsid);
if (c != NULL) {
return c;
}
c = get_com_class_so(ctx, clsid);
if (c != NULL) {
return c;
}
return NULL;
}
NTSTATUS com_register_running_class(struct GUID *clsid, const char *progid, struct IUnknown *p)
{
struct com_class *l = talloc_zero(running_classes?running_classes:talloc_autofree_context(), struct com_class);
l->clsid = *clsid;
l->progid = talloc_strdup(l, progid);
l->class_object = p;
DLIST_ADD(running_classes, l);
return NT_STATUS_OK;
}
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