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 #define LOG_TAG "installd"
18
19 #include <stdlib.h>
20 #include <string.h>
21
22 #include <log/log.h> // TODO: Move everything to base::logging.
23
24 #include <globals.h>
25 #include <installd_constants.h>
26 #include <utils.h>
27
28 namespace android {
29 namespace installd {
30
31 static constexpr const char* APP_SUBDIR = "app/"; // sub-directory under ANDROID_DATA
32
33 static constexpr const char* PRIV_APP_SUBDIR = "priv-app/"; // sub-directory under ANDROID_DATA
34
35 static constexpr const char* EPHEMERAL_APP_SUBDIR = "app-ephemeral/"; // sub-directory under
36 // ANDROID_DATA
37
38 static constexpr const char* APP_LIB_SUBDIR = "app-lib/"; // sub-directory under ANDROID_DATA
39
40 static constexpr const char* MEDIA_SUBDIR = "media/"; // sub-directory under ANDROID_DATA
41
42 static constexpr const char* PROFILES_SUBDIR = "misc/profiles"; // sub-directory under ANDROID_DATA
43
44 static constexpr const char* PRIVATE_APP_SUBDIR = "app-private/"; // sub-directory under
45 // ANDROID_DATA
46
47 /* Directory records that are used in execution of commands. */
48 dir_rec_t android_app_dir;
49 dir_rec_t android_app_ephemeral_dir;
50 dir_rec_t android_app_lib_dir;
51 dir_rec_t android_app_private_dir;
52 dir_rec_t android_asec_dir;
53 dir_rec_t android_data_dir;
54 dir_rec_t android_media_dir;
55 dir_rec_t android_mnt_expand_dir;
56 dir_rec_t android_profiles_dir;
57
58 dir_rec_array_t android_system_dirs;
59
60 /**
61 * Initialize all the global variables that are used elsewhere. Returns 0 upon
62 * success and -1 on error.
63 */
free_globals()64 void free_globals() {
65 size_t i;
66
67 for (i = 0; i < android_system_dirs.count; i++) {
68 if (android_system_dirs.dirs[i].path != NULL) {
69 free(android_system_dirs.dirs[i].path);
70 }
71 }
72
73 free(android_system_dirs.dirs);
74 }
75
init_globals_from_data_and_root(const char * data,const char * root)76 bool init_globals_from_data_and_root(const char* data, const char* root) {
77 // Get the android data directory.
78 if (get_path_from_string(&android_data_dir, data) < 0) {
79 return false;
80 }
81
82 // Get the android app directory.
83 if (copy_and_append(&android_app_dir, &android_data_dir, APP_SUBDIR) < 0) {
84 return false;
85 }
86
87 // Get the android protected app directory.
88 if (copy_and_append(&android_app_private_dir, &android_data_dir, PRIVATE_APP_SUBDIR) < 0) {
89 return false;
90 }
91
92 // Get the android ephemeral app directory.
93 if (copy_and_append(&android_app_ephemeral_dir, &android_data_dir, EPHEMERAL_APP_SUBDIR) < 0) {
94 return false;
95 }
96
97 // Get the android app native library directory.
98 if (copy_and_append(&android_app_lib_dir, &android_data_dir, APP_LIB_SUBDIR) < 0) {
99 return false;
100 }
101
102 // Get the sd-card ASEC mount point.
103 if (get_path_from_env(&android_asec_dir, ASEC_MOUNTPOINT_ENV_NAME) < 0) {
104 return false;
105 }
106
107 // Get the android media directory.
108 if (copy_and_append(&android_media_dir, &android_data_dir, MEDIA_SUBDIR) < 0) {
109 return false;
110 }
111
112 // Get the android external app directory.
113 if (get_path_from_string(&android_mnt_expand_dir, "/mnt/expand/") < 0) {
114 return false;
115 }
116
117 // Get the android profiles directory.
118 if (copy_and_append(&android_profiles_dir, &android_data_dir, PROFILES_SUBDIR) < 0) {
119 return false;
120 }
121
122 // Take note of the system and vendor directories.
123 android_system_dirs.count = 4;
124
125 android_system_dirs.dirs = (dir_rec_t*) calloc(android_system_dirs.count, sizeof(dir_rec_t));
126 if (android_system_dirs.dirs == NULL) {
127 ALOGE("Couldn't allocate array for dirs; aborting\n");
128 return false;
129 }
130
131 dir_rec_t android_root_dir;
132 if (get_path_from_string(&android_root_dir, root) < 0) {
133 return false;
134 }
135
136 android_system_dirs.dirs[0].path = build_string2(android_root_dir.path, APP_SUBDIR);
137 android_system_dirs.dirs[0].len = strlen(android_system_dirs.dirs[0].path);
138
139 android_system_dirs.dirs[1].path = build_string2(android_root_dir.path, PRIV_APP_SUBDIR);
140 android_system_dirs.dirs[1].len = strlen(android_system_dirs.dirs[1].path);
141
142 android_system_dirs.dirs[2].path = strdup("/vendor/app/");
143 android_system_dirs.dirs[2].len = strlen(android_system_dirs.dirs[2].path);
144
145 android_system_dirs.dirs[3].path = strdup("/oem/app/");
146 android_system_dirs.dirs[3].len = strlen(android_system_dirs.dirs[3].path);
147
148 return true;
149 }
150
151 } // namespace installd
152 } // namespace android
153