| 1 | /*
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| 2 | Unix SMB/CIFS implementation.
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| 3 | Main COM functionality
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| 4 | Copyright (C) 2004 Jelmer Vernooij <jelmer@samba.org>
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| 5 |
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| 6 | This program is free software; you can redistribute it and/or modify
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| 7 | it under the terms of the GNU General Public License as published by
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| 8 | the Free Software Foundation; either version 2 of the License, or
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| 9 | (at your option) any later version.
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| 10 |
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| 11 | This program is distributed in the hope that it will be useful,
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| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 14 | GNU General Public License for more details.
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| 15 |
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| 16 | You should have received a copy of the GNU General Public License
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| 17 | along with this program; if not, write to the Free Software
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| 18 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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| 19 | */
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| 20 |
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| 21 | #include "includes.h"
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| 22 | #include "../lib/util/dlinklist.h"
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| 23 | #include "lib/com/com.h"
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| 24 | #include "lib/events/events.h"
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| 25 | #include "librpc/gen_ndr/com_dcom.h"
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| 26 |
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| 27 | WERROR com_init_ctx(struct com_context **ctx, struct tevent_context *event_ctx)
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| 28 | {
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| 29 | *ctx = talloc(NULL, struct com_context);
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| 30 | if (event_ctx == NULL) {
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| 31 | event_ctx = event_context_init(*ctx);
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| 32 | }
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| 33 | (*ctx)->event_ctx = event_ctx;
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| 34 | return WERR_OK;
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| 35 | }
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| 36 |
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| 37 | WERROR com_create_object(struct com_context *ctx, struct GUID *clsid, int num_ifaces, struct GUID *iid, struct IUnknown **ip, WERROR *results)
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| 38 | {
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| 39 | struct IUnknown *iunk = NULL;
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| 40 | struct IClassFactory *factory;
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| 41 | WERROR error;
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| 42 | int i;
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| 43 | struct GUID classfact_iid;
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| 44 |
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| 45 | GUID_from_string(NDR_ICLASSFACTORY_UUID, &classfact_iid);
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| 46 |
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| 47 | /* Obtain class object */
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| 48 | error = com_get_class_object(ctx, clsid, &classfact_iid, (struct IUnknown **)&factory);
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| 49 | if (!W_ERROR_IS_OK(error)) {
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| 50 | DEBUG(3, ("Unable to obtain class object for %s\n", GUID_string(NULL, clsid)));
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| 51 | return error;
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| 52 | }
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| 53 |
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| 54 | /* Run IClassFactory::CreateInstance() */
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| 55 | error = IClassFactory_CreateInstance(factory, ctx, NULL, &classfact_iid, &iunk);
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| 56 | if (!W_ERROR_IS_OK(error)) {
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| 57 | DEBUG(3, ("Error while calling IClassFactory::CreateInstance : %s\n", win_errstr(error)));
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| 58 | return error;
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| 59 | }
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| 60 |
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| 61 | if (!iunk) {
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| 62 | DEBUG(0, ("IClassFactory_CreateInstance returned success but result pointer is still NULL!\n"));
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| 63 | return WERR_GENERAL_FAILURE;
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| 64 | }
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| 65 |
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| 66 | /* Release class object */
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| 67 | IUnknown_Release(factory, ctx);
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| 68 |
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| 69 | error = WERR_OK;
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| 70 |
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| 71 | /* Do one or more QueryInterface calls */
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| 72 | for (i = 0; i < num_ifaces; i++) {
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| 73 | results[i] = IUnknown_QueryInterface(iunk, ctx, &iid[i], &ip[i]);
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| 74 | if (!W_ERROR_IS_OK(results[i])) error = results[i];
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| 75 | }
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| 76 |
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| 77 | return error;
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| 78 | }
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| 79 |
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| 80 | WERROR com_get_class_object(struct com_context *ctx, struct GUID *clsid, struct GUID *iid, struct IUnknown **ip)
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| 81 | {
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| 82 | struct IUnknown *iu;
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| 83 |
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| 84 | iu = com_class_by_clsid(ctx, clsid);
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| 85 | if (!iu) {
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| 86 | return WERR_CLASS_NOT_REGISTERED;
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| 87 | }
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| 88 |
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| 89 | return IUnknown_QueryInterface(iu, ctx, iid, ip);
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| 90 | }
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