1 /*
2 * Copyright (C) 2012 Samsung Electronics Co., LTD
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include <stdlib.h>
18
19 #include "tlc_communication.h"
20
21 #define LOG_TAG "tlc_communication"
22 #include "log.h"
23
tlc_open(mc_comm_ctx * comm_ctx)24 mcResult_t tlc_open(mc_comm_ctx *comm_ctx) {
25 mcResult_t mcRet;
26
27 LOG_I("open() called");
28 do {
29 // -------------------------------------------------------------
30 // Step 1: Open the MobiCore device
31 LOG_I("Opening MobiCore device");
32 mcRet = mcOpenDevice(comm_ctx->device_id);
33 if (MC_DRV_OK != mcRet)
34 LOG_I("mcOpenDevice result: %d", mcRet);
35
36
37 // -------------------------------------------------------------
38 // Step 2: Allocate WSM buffer for the TCI
39 LOG_I("Allocating WSM for TCI");
40 mcRet = mcMallocWsm(comm_ctx->device_id, 0, sizeof(tciMessage_t), (uint8_t **)&(comm_ctx->tci_msg), 0);
41 if (MC_DRV_OK != mcRet) {
42 LOG_E("Allocation of TCI WSM failed: %d", mcRet);
43 break;
44 }
45
46 // -------------------------------------------------------------
47 // Step 3: Open session with the Trustlet
48 LOG_I("Opening the session");
49 bzero(&(comm_ctx->handle), sizeof(mcSessionHandle_t)); // Clear the session handle
50
51 comm_ctx->handle.deviceId = comm_ctx->device_id; // The device ID (default device is used)
52
53 mcRet = mcOpenSession(&(comm_ctx->handle), &(comm_ctx->uuid), (uint8_t *)(comm_ctx->tci_msg),
54 (uint32_t) sizeof(tciMessage_t));
55 if (MC_DRV_OK != mcRet) {
56 LOG_E("Open session failed: %d", mcRet);
57 break;
58 }
59
60 LOG_I("tlc_open() succeeded");
61 } while (false);
62
63 return mcRet;
64 }
65
tlc_close(mc_comm_ctx * comm_ctx)66 mcResult_t tlc_close(mc_comm_ctx *comm_ctx) {
67 mcResult_t mcRet;
68
69 LOG_I("close() called");
70 do {
71
72 // -------------------------------------------------------------
73 // Step 1: Free WSM
74 LOG_I("Free WSM");
75 mcRet = mcFreeWsm((comm_ctx->device_id), (uint8_t *)(comm_ctx->tci_msg));
76 if (MC_DRV_OK != mcRet) {
77 LOG_E("Free WSM failed: %d", mcRet);
78 break;
79 }
80
81 // -------------------------------------------------------------
82 // Step 2: Close session with the Trustlet
83 LOG_I("Closing the session");
84 mcRet = mcCloseSession(&(comm_ctx->handle));
85 if (MC_DRV_OK != mcRet) {
86 LOG_E("Closing session failed: %d", mcRet);
87 break;
88 }
89
90 // -------------------------------------------------------------
91 // Step 3: Close the MobiCore device
92 LOG_I("Closing MobiCore device");
93 mcRet = mcCloseDevice(comm_ctx->device_id);
94 if (MC_DRV_OK != mcRet) {
95 LOG_E("Closing MobiCore device failed: %d", mcRet);
96 break;
97 }
98
99 LOG_I("tlc_close() succeeded");
100 } while (false);
101
102 return mcRet;
103 }
104
tlc_communicate(mc_comm_ctx * comm_ctx)105 mcResult_t tlc_communicate(mc_comm_ctx *comm_ctx) {
106 mcResult_t mcRet;
107
108 do {
109 // -------------------------------------------------------------
110 // Step 1: signal the Trustlet
111 mcRet = mcNotify(&(comm_ctx->handle));
112 if (MC_DRV_OK != mcRet) {
113 LOG_E("Notify failed: %d", mcRet);
114 break;
115 }
116 LOG_I("mcNotify is completed\n");
117
118 // -------------------------------------------------------------
119 // Step 2: Wait for the Trustlet response
120 mcRet = mcWaitNotification(&(comm_ctx->handle), -1);
121 if (MC_DRV_OK != mcRet) {
122 LOG_E("Wait for response notification failed: %d", mcRet);
123 break;
124 }
125
126 LOG_I("mcWaitNotification is completed");
127
128 } while (false);
129
130 return mcRet;
131 }
132