/* 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 "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; }