1 /*
2 * Copyright (C) 2020 The Android Open Source Project
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 <app_mgmt_port_consts.h>
18 #include <app_mgmt_test.h>
19 #include <inttypes.h>
20 #include <lib/tipc/tipc.h>
21 #include <stddef.h>
22 #include <stdio.h>
23 #include <stdlib.h>
24 #include <string.h>
25 #include <trusty_ipc.h>
26 #include <uapi/err.h>
27
28 #define TLOG_TAG "port-waiter-srv"
29
main(void)30 int main(void) {
31 int rc;
32 handle_t shandle = INVALID_IPC_HANDLE;
33 handle_t phandle = INVALID_IPC_HANDLE;
34 handle_t chandle = INVALID_IPC_HANDLE;
35 struct uevent uevt;
36 uuid_t peer_uuid;
37
38 rc = connect(START_PORT, IPC_CONNECT_WAIT_FOR_PORT);
39 if (rc < 0) {
40 TLOGI("Failed (%d) to connect to start port\n", rc);
41 goto err_connect;
42 }
43 shandle = (handle_t)rc;
44
45 rc = port_create(PORT_WAITER_PORT, 1, 1, IPC_PORT_ALLOW_TA_CONNECT);
46 if (rc < 0) {
47 TLOGI("Failed (%d) to create port-waiter port\n", rc);
48 goto err_port_create;
49 }
50 phandle = (handle_t)rc;
51
52 rc = wait(phandle, &uevt, INFINITE_TIME);
53 if (rc != NO_ERROR || !(uevt.event & IPC_HANDLE_POLL_READY)) {
54 TLOGI("Port wait failed(%d) event:%d handle:%d\n", rc, uevt.event,
55 phandle);
56 goto err_wait_accept;
57 }
58
59 rc = accept(uevt.handle, &peer_uuid);
60 if (rc == ERR_CHANNEL_CLOSED) {
61 /* client already closed connection, nothing to do */
62 goto err_channel_closed;
63 }
64 if (rc < 0) {
65 TLOGI("Accept failed %d\n", rc);
66 goto err_accept;
67 }
68
69 chandle = (handle_t)rc;
70
71 uint8_t cmd = CMD_EXIT;
72 rc = tipc_send1(shandle, &cmd, sizeof(cmd));
73 if (rc != (int)sizeof(cmd)) {
74 TLOGI("Failed (%d) to send exit command\n", rc);
75 goto err_send_cmd;
76 }
77
78 rc = wait(shandle, &uevt, INFINITE_TIME);
79 if (rc != NO_ERROR || !(uevt.event & IPC_HANDLE_POLL_MSG)) {
80 TLOGI("Port wait failed(%d) event:%d handle:%d\n", rc, uevt.event,
81 shandle);
82 goto err_wait_resp;
83 }
84
85 uint8_t rsp;
86 rc = tipc_recv1(shandle, sizeof(rsp), &rsp, sizeof(rsp));
87 if (rc != (int)sizeof(rsp)) {
88 TLOGI("Failed (%d) to receive exit response\n", rc);
89 goto err_recv_resp;
90 }
91
92 TLOGI("Received exit response: %" PRIu8 "\n", rsp);
93
94 rc = tipc_send1(chandle, &rsp, sizeof(rsp));
95 if (rc != (int)sizeof(rsp)) {
96 TLOGI("Failed (%d) to send exit response\n", rc);
97 goto err_send_resp;
98 }
99
100 close(chandle);
101 close(phandle);
102 close(shandle);
103
104 return 0;
105
106 err_send_resp:
107 err_recv_resp:
108 err_wait_resp:
109 err_send_cmd:
110 close(chandle);
111 err_accept:
112 err_channel_closed:
113 err_wait_accept:
114 close(phandle);
115 err_port_create:
116 close(shandle);
117 err_connect:
118 return rc;
119 }
120