1 /*
2 * Copyright (C) 2021 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 /* this program is used to read a set of system properties and their values
18 * from the emulator program and set them in the currently-running emulated
19 * system. It does so by connecting to the 'boot-properties' qemud service.
20 *
21 * This program should be run as root and called from
22 * /system/etc/init.ranchu.rc exclusively.
23 */
24
25 #define LOG_TAG "qemu-adb-keys"
26
27 #define DEBUG 0
28 //#define LOG_NDEBUG 0
29
30 #include <sys/stat.h>
31
32 #include <fstream>
33 #include <iostream>
34 #include <string.h>
35
36 #include <log/log.h>
37
38 #if DEBUG
39 # define DD(...) ALOGD(__VA_ARGS__)
40 #else
41 # define DD(...) ((void)0)
42 #endif
43
44 #define ADB_PUBKEY_PROP "qemu.adb.pubkey"
45 // init will copy over this file to /data/misc/adb/adb_keys
46 #define ADB_KEYS_FILE "/data/vendor/adb/adb_keys"
47
48 extern bool fs_mgr_get_boot_config(const std::string& key, std::string* out_val);
49
main(void)50 int main(void) {
51 struct stat st;
52 if (stat(ADB_KEYS_FILE, &st) == 0) {
53 ALOGV("%s already exists", ADB_KEYS_FILE);
54 return 0;
55 }
56
57 std::string adbkey_pub;
58 if (!fs_mgr_get_boot_config(ADB_PUBKEY_PROP, &adbkey_pub)) {
59 ALOGE("Failed to read %s bootconfig prop", ADB_PUBKEY_PROP);
60 exit(1);
61 }
62
63 std::ofstream f;
64 f.open(ADB_KEYS_FILE);
65 if (!f.is_open()) {
66 ALOGE("Failed to open %s\n", ADB_KEYS_FILE);
67 exit(1);
68 }
69
70 ALOGV("Got %s=[%s]", ADB_PUBKEY_PROP, adbkey_pub.c_str());
71 f << adbkey_pub;
72 f.close();
73 return 0;
74 }
75