1/*
2** Copyright 2015, 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 <stdlib.h>
18#include <string.h>
19
20#include <cutils/log.h>               // TODO: Move everything to base::logging.
21
22#include <globals.h>
23#include <installd_constants.h>
24#include <utils.h>
25
26#ifndef LOG_TAG
27#define LOG_TAG "installd"
28#endif
29
30namespace android {
31namespace installd {
32
33/* Directory records that are used in execution of commands. */
34dir_rec_t android_app_dir;
35dir_rec_t android_app_ephemeral_dir;
36dir_rec_t android_app_lib_dir;
37dir_rec_t android_app_private_dir;
38dir_rec_t android_asec_dir;
39dir_rec_t android_data_dir;
40dir_rec_t android_media_dir;
41dir_rec_t android_mnt_expand_dir;
42dir_rec_t android_profiles_dir;
43
44dir_rec_array_t android_system_dirs;
45
46/**
47 * Initialize all the global variables that are used elsewhere. Returns 0 upon
48 * success and -1 on error.
49 */
50void free_globals() {
51    size_t i;
52
53    for (i = 0; i < android_system_dirs.count; i++) {
54        if (android_system_dirs.dirs[i].path != NULL) {
55            free(android_system_dirs.dirs[i].path);
56        }
57    }
58
59    free(android_system_dirs.dirs);
60}
61
62bool init_globals_from_data_and_root(const char* data, const char* root) {
63    // Get the android data directory.
64    if (get_path_from_string(&android_data_dir, data) < 0) {
65        return false;
66    }
67
68    // Get the android app directory.
69    if (copy_and_append(&android_app_dir, &android_data_dir, APP_SUBDIR) < 0) {
70        return false;
71    }
72
73    // Get the android protected app directory.
74    if (copy_and_append(&android_app_private_dir, &android_data_dir, PRIVATE_APP_SUBDIR) < 0) {
75        return false;
76    }
77
78    // Get the android ephemeral app directory.
79    if (copy_and_append(&android_app_ephemeral_dir, &android_data_dir, EPHEMERAL_APP_SUBDIR) < 0) {
80        return -1;
81    }
82
83    // Get the android app native library directory.
84    if (copy_and_append(&android_app_lib_dir, &android_data_dir, APP_LIB_SUBDIR) < 0) {
85        return false;
86    }
87
88    // Get the sd-card ASEC mount point.
89    if (get_path_from_env(&android_asec_dir, "ASEC_MOUNTPOINT") < 0) {
90        return false;
91    }
92
93    // Get the android media directory.
94    if (copy_and_append(&android_media_dir, &android_data_dir, MEDIA_SUBDIR) < 0) {
95        return false;
96    }
97
98    // Get the android external app directory.
99    if (get_path_from_string(&android_mnt_expand_dir, "/mnt/expand/") < 0) {
100        return false;
101    }
102
103    // Get the android profiles directory.
104    if (copy_and_append(&android_profiles_dir, &android_data_dir, PROFILES_SUBDIR) < 0) {
105        return false;
106    }
107
108    // Take note of the system and vendor directories.
109    android_system_dirs.count = 4;
110
111    android_system_dirs.dirs = (dir_rec_t*) calloc(android_system_dirs.count, sizeof(dir_rec_t));
112    if (android_system_dirs.dirs == NULL) {
113        ALOGE("Couldn't allocate array for dirs; aborting\n");
114        return false;
115    }
116
117    dir_rec_t android_root_dir;
118    if (get_path_from_string(&android_root_dir, root) < 0) {
119        return false;
120    }
121
122    android_system_dirs.dirs[0].path = build_string2(android_root_dir.path, APP_SUBDIR);
123    android_system_dirs.dirs[0].len = strlen(android_system_dirs.dirs[0].path);
124
125    android_system_dirs.dirs[1].path = build_string2(android_root_dir.path, PRIV_APP_SUBDIR);
126    android_system_dirs.dirs[1].len = strlen(android_system_dirs.dirs[1].path);
127
128    android_system_dirs.dirs[2].path = strdup("/vendor/app/");
129    android_system_dirs.dirs[2].len = strlen(android_system_dirs.dirs[2].path);
130
131    android_system_dirs.dirs[3].path = strdup("/oem/app/");
132    android_system_dirs.dirs[3].len = strlen(android_system_dirs.dirs[3].path);
133
134    return true;
135}
136
137}  // namespace installd
138}  // namespace android
139