blob: 0bb0c3c66674a82fd98cc8e6d114d75237d24afc [file] [log] [blame]
Mike Lockwood94afecf2012-10-24 10:45:23 -07001/*
2** Copyright 2008, The Android Open Source Project
3**
Jeff Sharkey19803802015-04-07 12:44:51 -07004** 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
Mike Lockwood94afecf2012-10-24 10:45:23 -07007**
Jeff Sharkey19803802015-04-07 12:44:51 -07008** http://www.apache.org/licenses/LICENSE-2.0
Mike Lockwood94afecf2012-10-24 10:45:23 -07009**
Jeff Sharkey19803802015-04-07 12:44:51 -070010** 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
Mike Lockwood94afecf2012-10-24 10:45:23 -070014** limitations under the License.
15*/
16
Andreas Gampe02d0de52015-11-11 20:43:16 -080017#include <fcntl.h>
Stephen Smalleybd558d62013-04-16 12:16:50 -040018#include <selinux/android.h>
19#include <selinux/avc.h>
Andreas Gampe02d0de52015-11-11 20:43:16 -080020#include <sys/capability.h>
Jeff Sharkeyc7d1b222016-01-11 13:07:09 -070021#include <sys/fsuid.h>
Andreas Gampe02d0de52015-11-11 20:43:16 -080022#include <sys/prctl.h>
23#include <sys/socket.h>
24#include <sys/stat.h>
25
26#include <android-base/logging.h>
27#include <cutils/fs.h>
28#include <cutils/log.h> // TODO: Move everything to base::logging.
29#include <cutils/properties.h>
30#include <cutils/sockets.h>
31#include <private/android_filesystem_config.h>
32
33#include <commands.h>
34#include <globals.h>
35#include <installd_constants.h>
36#include <installd_deps.h> // Need to fill in requirements of commands.
37#include <utils.h>
38
39#ifndef LOG_TAG
40#define LOG_TAG "installd"
41#endif
42#define SOCKET_PATH "installd"
Mike Lockwood94afecf2012-10-24 10:45:23 -070043
Mike Lockwood94afecf2012-10-24 10:45:23 -070044#define BUFFER_MAX 1024 /* input buffer for commands */
Fyodor Kupolov88ce4ff2015-03-03 12:25:29 -080045#define TOKEN_MAX 16 /* max number of arguments in buffer */
Mike Lockwood94afecf2012-10-24 10:45:23 -070046#define REPLY_MAX 256 /* largest reply allowed */
47
Andreas Gampe02d0de52015-11-11 20:43:16 -080048namespace android {
49namespace installd {
50
51// Check that installd-deps sizes match cutils sizes.
52static_assert(kPropertyKeyMax == PROPERTY_KEY_MAX, "Size mismatch.");
53static_assert(kPropertyValueMax == PROPERTY_VALUE_MAX, "Size mismatch.");
54
55////////////////////////
56// Plug-in functions. //
57////////////////////////
58
59int get_property(const char *key, char *value, const char *default_value) {
60 return property_get(key, value, default_value);
61}
62
63// Compute the output path of
64bool calculate_oat_file_path(char path[PKG_PATH_MAX],
65 const char *oat_dir,
66 const char *apk_path,
67 const char *instruction_set) {
68 char *file_name_start;
69 char *file_name_end;
70
71 file_name_start = strrchr(apk_path, '/');
72 if (file_name_start == NULL) {
73 ALOGE("apk_path '%s' has no '/'s in it\n", apk_path);
74 return false;
75 }
76 file_name_end = strrchr(apk_path, '.');
77 if (file_name_end < file_name_start) {
78 ALOGE("apk_path '%s' has no extension\n", apk_path);
79 return false;
80 }
81
82 // Calculate file_name
83 int file_name_len = file_name_end - file_name_start - 1;
84 char file_name[file_name_len + 1];
85 memcpy(file_name, file_name_start + 1, file_name_len);
86 file_name[file_name_len] = '\0';
87
88 // <apk_parent_dir>/oat/<isa>/<file_name>.odex
89 snprintf(path, PKG_PATH_MAX, "%s/%s/%s.odex", oat_dir, instruction_set, file_name);
90 return true;
91}
92
93/*
94 * Computes the odex file for the given apk_path and instruction_set.
95 * /system/framework/whatever.jar -> /system/framework/oat/<isa>/whatever.odex
96 *
97 * Returns false if it failed to determine the odex file path.
98 */
99bool calculate_odex_file_path(char path[PKG_PATH_MAX],
100 const char *apk_path,
101 const char *instruction_set) {
102 if (strlen(apk_path) + strlen("oat/") + strlen(instruction_set)
103 + strlen("/") + strlen("odex") + 1 > PKG_PATH_MAX) {
104 ALOGE("apk_path '%s' may be too long to form odex file path.\n", apk_path);
105 return false;
106 }
107
108 strcpy(path, apk_path);
109 char *end = strrchr(path, '/');
110 if (end == NULL) {
111 ALOGE("apk_path '%s' has no '/'s in it?!\n", apk_path);
112 return false;
113 }
114 const char *apk_end = apk_path + (end - path); // strrchr(apk_path, '/');
115
116 strcpy(end + 1, "oat/"); // path = /system/framework/oat/\0
117 strcat(path, instruction_set); // path = /system/framework/oat/<isa>\0
118 strcat(path, apk_end); // path = /system/framework/oat/<isa>/whatever.jar\0
119 end = strrchr(path, '.');
120 if (end == NULL) {
121 ALOGE("apk_path '%s' has no extension.\n", apk_path);
122 return false;
123 }
124 strcpy(end + 1, "odex");
125 return true;
126}
127
128bool create_cache_path(char path[PKG_PATH_MAX],
129 const char *src,
130 const char *instruction_set) {
Greg Kaiser00087b72016-03-14 13:29:10 -0700131 /* demand that we are an absolute path */
132 if ((src == nullptr) || (src[0] != '/') || strstr(src,"..")) {
Andreas Gampe02d0de52015-11-11 20:43:16 -0800133 return false;
134 }
135
Greg Kaiser00087b72016-03-14 13:29:10 -0700136 size_t srclen = strlen(src);
137
Andreas Gampe02d0de52015-11-11 20:43:16 -0800138 if (srclen > PKG_PATH_MAX) { // XXX: PKG_NAME_MAX?
139 return false;
140 }
141
142 size_t dstlen =
143 android_data_dir.len +
144 strlen(DALVIK_CACHE) +
145 1 +
146 strlen(instruction_set) +
147 srclen +
148 strlen(DALVIK_CACHE_POSTFIX) + 2;
149
150 if (dstlen > PKG_PATH_MAX) {
151 return false;
152 }
153
154 sprintf(path,"%s%s/%s/%s%s",
155 android_data_dir.path,
156 DALVIK_CACHE,
157 instruction_set,
158 src + 1, /* skip the leading / */
159 DALVIK_CACHE_POSTFIX);
160
161 char* tmp =
162 path +
163 android_data_dir.len +
164 strlen(DALVIK_CACHE) +
165 1 +
166 strlen(instruction_set) + 1;
167
168 for(; *tmp; tmp++) {
169 if (*tmp == '/') {
170 *tmp = '@';
171 }
172 }
173
174 return true;
175}
176
177
Jeff Sharkey6fe28a02015-04-09 13:10:03 -0700178static char* parse_null(char* arg) {
179 if (strcmp(arg, "!") == 0) {
180 return nullptr;
181 } else {
182 return arg;
183 }
184}
185
Andreas Gampe02d0de52015-11-11 20:43:16 -0800186static int do_ping(char **arg ATTRIBUTE_UNUSED, char reply[REPLY_MAX] ATTRIBUTE_UNUSED)
Mike Lockwood94afecf2012-10-24 10:45:23 -0700187{
188 return 0;
189}
190
Jeff Sharkeyc7d1b222016-01-11 13:07:09 -0700191static int do_create_app_data(char **arg, char reply[REPLY_MAX] ATTRIBUTE_UNUSED) {
192 /* const char *uuid, const char *pkgname, userid_t userid, int flags,
Janis Danisevskiseecb2d22016-01-12 14:45:55 +0000193 appid_t appid, const char* seinfo, int target_sdk_version */
194 return create_app_data(parse_null(arg[0]), arg[1], atoi(arg[2]), atoi(arg[3]),
195 atoi(arg[4]), arg[5], atoi(arg[6]));
Jeff Sharkeyc7d1b222016-01-11 13:07:09 -0700196}
197
198static int do_restorecon_app_data(char **arg, char reply[REPLY_MAX] ATTRIBUTE_UNUSED) {
199 /* const char* uuid, const char* pkgName, userid_t userid, int flags,
200 appid_t appid, const char* seinfo */
201 return restorecon_app_data(parse_null(arg[0]), arg[1], atoi(arg[2]), atoi(arg[3]), atoi(arg[4]), arg[5]);
202}
203
Jeff Sharkeycc6281c2016-02-06 19:46:09 -0700204static int do_migrate_app_data(char **arg, char reply[REPLY_MAX] ATTRIBUTE_UNUSED) {
205 /* const char *uuid, const char *pkgname, userid_t userid, int flags */
206 return migrate_app_data(parse_null(arg[0]), arg[1], atoi(arg[2]), atoi(arg[3]));
207}
208
Jeff Sharkeyc7d1b222016-01-11 13:07:09 -0700209static int do_clear_app_data(char **arg, char reply[REPLY_MAX] ATTRIBUTE_UNUSED) {
210 /* const char *uuid, const char *pkgname, userid_t userid, int flags */
211 return clear_app_data(parse_null(arg[0]), arg[1], atoi(arg[2]), atoi(arg[3]));
212}
213
214static int do_destroy_app_data(char **arg, char reply[REPLY_MAX] ATTRIBUTE_UNUSED) {
215 /* const char *uuid, const char *pkgname, userid_t userid, int flags */
216 return destroy_app_data(parse_null(arg[0]), arg[1], atoi(arg[2]), atoi(arg[3]));
Mike Lockwood94afecf2012-10-24 10:45:23 -0700217}
218
Andreas Gampe01ad5982016-03-09 16:27:29 -0800219// We use otapreopt_chroot to get into the chroot.
220static constexpr const char* kOtaPreopt = "/system/bin/otapreopt_chroot";
Andreas Gampe73dae112015-11-19 14:12:14 -0800221
Andreas Gampe01ad5982016-03-09 16:27:29 -0800222static int do_ota_dexopt(char **arg, char reply[REPLY_MAX] ATTRIBUTE_UNUSED) {
223 // Time to fork and run otapreopt.
224
225 // Check that the tool exists.
226 struct stat s;
227 if (stat(kOtaPreopt, &s) != 0) {
228 LOG(ERROR) << "Otapreopt chroot tool not found.";
229 return -1;
Andreas Gampe73dae112015-11-19 14:12:14 -0800230 }
Andreas Gampe01ad5982016-03-09 16:27:29 -0800231
232 pid_t pid = fork();
233 if (pid == 0) {
234 const char* argv[1 + 9 + 1];
235 argv[0] = kOtaPreopt;
236 for (size_t i = 1; i <= 9; ++i) {
237 argv[i] = arg[i - 1];
238 }
239 argv[10] = nullptr;
240
241 execv(argv[0], (char * const *)argv);
242 PLOG(ERROR) << "execv(OTAPREOPT_CHROOT) failed";
243 exit(99);
244 } else {
245 int res = wait_child(pid);
246 if (res == 0) {
247 ALOGV("DexInv: --- END OTAPREOPT (success) ---\n");
248 } else {
249 ALOGE("DexInv: --- END OTAPREOPT --- status=0x%04x, process failed\n", res);
250 }
251 return res;
252 }
Andreas Gampe73dae112015-11-19 14:12:14 -0800253}
254
255static int do_dexopt(char **arg, char reply[REPLY_MAX])
Mike Lockwood94afecf2012-10-24 10:45:23 -0700256{
Andreas Gampe73dae112015-11-19 14:12:14 -0800257 int dexopt_flags = atoi(arg[6]);
258 if ((dexopt_flags & DEXOPT_OTA) != 0) {
259 return do_ota_dexopt(arg, reply);
260 }
Calin Juravle60a794d2015-12-24 12:36:41 +0200261 /* apk_path, uid, pkgname, instruction_set, dexopt_needed, oat_dir, dexopt_flags, volume_uuid,
262 use_profiles */
Todd Kennedy76e767c2015-09-25 07:47:47 -0700263 return dexopt(arg[0], atoi(arg[1]), arg[2], arg[3], atoi(arg[4]),
Andreas Gampe73dae112015-11-19 14:12:14 -0800264 arg[5], dexopt_flags, parse_null(arg[7]), (atoi(arg[8]) == 0 ? false : true));
Mike Lockwood94afecf2012-10-24 10:45:23 -0700265}
266
Andreas Gampe02d0de52015-11-11 20:43:16 -0800267static int do_mark_boot_complete(char **arg, char reply[REPLY_MAX] ATTRIBUTE_UNUSED)
Narayan Kamath091ea772014-11-10 15:03:46 +0000268{
269 return mark_boot_complete(arg[0] /* instruction set */);
270}
271
Andreas Gampe02d0de52015-11-11 20:43:16 -0800272static int do_rm_dex(char **arg, char reply[REPLY_MAX] ATTRIBUTE_UNUSED)
Mike Lockwood94afecf2012-10-24 10:45:23 -0700273{
Narayan Kamath1b400322014-04-11 13:17:00 +0100274 return rm_dex(arg[0], arg[1]); /* pkgname, instruction_set */
Mike Lockwood94afecf2012-10-24 10:45:23 -0700275}
276
Andreas Gampe02d0de52015-11-11 20:43:16 -0800277static int do_free_cache(char **arg, char reply[REPLY_MAX] ATTRIBUTE_UNUSED) /* TODO int:free_size */
Mike Lockwood94afecf2012-10-24 10:45:23 -0700278{
Jeff Sharkey6fe28a02015-04-09 13:10:03 -0700279 return free_cache(parse_null(arg[0]), (int64_t)atoll(arg[1])); /* uuid, free_size */
Mike Lockwood94afecf2012-10-24 10:45:23 -0700280}
281
Jeff Sharkeyc7d1b222016-01-11 13:07:09 -0700282static int do_get_app_size(char **arg, char reply[REPLY_MAX]) {
Mike Lockwood94afecf2012-10-24 10:45:23 -0700283 int64_t codesize = 0;
284 int64_t datasize = 0;
285 int64_t cachesize = 0;
286 int64_t asecsize = 0;
287 int res = 0;
288
Jeff Sharkeyc7d1b222016-01-11 13:07:09 -0700289 /* const char *uuid, const char *pkgname, userid_t userid, int flags,
290 const char *apkpath, const char *libdirpath, const char *fwdlock_apkpath,
291 const char *asecpath, const char *instruction_set */
292 res = get_app_size(parse_null(arg[0]), arg[1], atoi(arg[2]), atoi(arg[3]), arg[4], arg[5],
293 arg[6], arg[7], arg[8], &codesize, &datasize, &cachesize, &asecsize);
Mike Lockwood94afecf2012-10-24 10:45:23 -0700294
295 /*
296 * Each int64_t can take up 22 characters printed out. Make sure it
297 * doesn't go over REPLY_MAX in the future.
298 */
299 snprintf(reply, REPLY_MAX, "%" PRId64 " %" PRId64 " %" PRId64 " %" PRId64,
300 codesize, datasize, cachesize, asecsize);
301 return res;
302}
303
Jeff Sharkeyc7d1b222016-01-11 13:07:09 -0700304static int do_move_complete_app(char **arg, char reply[REPLY_MAX] ATTRIBUTE_UNUSED) {
305 /* const char* from_uuid, const char *to_uuid, const char *package_name,
Janis Danisevskiseecb2d22016-01-12 14:45:55 +0000306 const char *data_app_name, appid_t appid, const char* seinfo,
307 int target_sdk_version */
308 return move_complete_app(parse_null(arg[0]), parse_null(arg[1]), arg[2], arg[3],
309 atoi(arg[4]), arg[5], atoi(arg[6]));
Mike Lockwood94afecf2012-10-24 10:45:23 -0700310}
311
Andreas Gampe02d0de52015-11-11 20:43:16 -0800312static int do_mk_user_config(char **arg, char reply[REPLY_MAX] ATTRIBUTE_UNUSED)
Robin Lee095c7632014-04-25 15:05:19 +0100313{
Robin Lee7c8bec02014-06-10 18:46:26 +0100314 return make_user_config(atoi(arg[0])); /* userid */
Robin Lee095c7632014-04-25 15:05:19 +0100315}
316
Andreas Gampe02d0de52015-11-11 20:43:16 -0800317static int do_rm_user(char **arg, char reply[REPLY_MAX] ATTRIBUTE_UNUSED)
Mike Lockwood94afecf2012-10-24 10:45:23 -0700318{
Jeff Sharkey6fe28a02015-04-09 13:10:03 -0700319 return delete_user(parse_null(arg[0]), atoi(arg[1])); /* uuid, userid */
Mike Lockwood94afecf2012-10-24 10:45:23 -0700320}
321
Andreas Gampe02d0de52015-11-11 20:43:16 -0800322static int do_linklib(char **arg, char reply[REPLY_MAX] ATTRIBUTE_UNUSED)
Mike Lockwood94afecf2012-10-24 10:45:23 -0700323{
Jeff Sharkey6fe28a02015-04-09 13:10:03 -0700324 return linklib(parse_null(arg[0]), arg[1], arg[2], atoi(arg[3]));
Mike Lockwood94afecf2012-10-24 10:45:23 -0700325}
326
Andreas Gampe02d0de52015-11-11 20:43:16 -0800327static int do_idmap(char **arg, char reply[REPLY_MAX] ATTRIBUTE_UNUSED)
MÃ¥rten Kongstad63568b12014-01-31 14:42:59 +0100328{
329 return idmap(arg[0], arg[1], atoi(arg[2]));
330}
331
Andreas Gampe02d0de52015-11-11 20:43:16 -0800332static int do_create_oat_dir(char **arg, char reply[REPLY_MAX] ATTRIBUTE_UNUSED)
Fyodor Kupolov88ce4ff2015-03-03 12:25:29 -0800333{
334 /* oat_dir, instruction_set */
335 return create_oat_dir(arg[0], arg[1]);
336}
337
Andreas Gampe02d0de52015-11-11 20:43:16 -0800338static int do_rm_package_dir(char **arg, char reply[REPLY_MAX] ATTRIBUTE_UNUSED)
Fyodor Kupolov88ce4ff2015-03-03 12:25:29 -0800339{
340 /* oat_dir */
341 return rm_package_dir(arg[0]);
Alex Light43c5d302014-07-21 12:23:48 -0700342}
343
Calin Juravleedae6692016-03-23 13:55:31 +0000344static int do_clear_app_profiles(char **arg, char reply[REPLY_MAX] ATTRIBUTE_UNUSED)
David Brazdild828d682016-03-08 12:50:20 +0000345{
346 /* package_name */
Calin Juravleedae6692016-03-23 13:55:31 +0000347 return clear_app_profiles(arg[0]);
348}
349
350static int do_destroy_app_profiles(char **arg, char reply[REPLY_MAX] ATTRIBUTE_UNUSED)
351{
352 /* package_name */
353 return destroy_app_profiles(arg[0]);
David Brazdild828d682016-03-08 12:50:20 +0000354}
355
Andreas Gampe02d0de52015-11-11 20:43:16 -0800356static int do_link_file(char **arg, char reply[REPLY_MAX] ATTRIBUTE_UNUSED)
Narayan Kamathd845c962015-06-04 13:20:27 +0100357{
358 /* relative_path, from_base, to_base */
359 return link_file(arg[0], arg[1], arg[2]);
360}
361
Andreas Gampee65b4fa2016-03-01 11:46:45 -0800362static int do_move_ab(char **arg, char reply[REPLY_MAX] ATTRIBUTE_UNUSED) {
363 // apk_path, instruction_set, oat_dir
364 return move_ab(arg[0], arg[1], arg[2]);
365}
366
Mike Lockwood94afecf2012-10-24 10:45:23 -0700367struct cmdinfo {
368 const char *name;
369 unsigned numargs;
370 int (*func)(char **arg, char reply[REPLY_MAX]);
371};
372
373struct cmdinfo cmds[] = {
374 { "ping", 0, do_ping },
Jeff Sharkeyc7d1b222016-01-11 13:07:09 -0700375
Janis Danisevskiseecb2d22016-01-12 14:45:55 +0000376 { "create_app_data", 7, do_create_app_data },
Jeff Sharkeyc7d1b222016-01-11 13:07:09 -0700377 { "restorecon_app_data", 6, do_restorecon_app_data },
Jeff Sharkeycc6281c2016-02-06 19:46:09 -0700378 { "migrate_app_data", 4, do_migrate_app_data },
Jeff Sharkeyc7d1b222016-01-11 13:07:09 -0700379 { "clear_app_data", 4, do_clear_app_data },
380 { "destroy_app_data", 4, do_destroy_app_data },
Janis Danisevskiseecb2d22016-01-12 14:45:55 +0000381 { "move_complete_app", 7, do_move_complete_app },
Jeff Sharkeyc7d1b222016-01-11 13:07:09 -0700382 { "get_app_size", 9, do_get_app_size },
383
Calin Juravle60a794d2015-12-24 12:36:41 +0200384 { "dexopt", 9, do_dexopt },
Narayan Kamath091ea772014-11-10 15:03:46 +0000385 { "markbootcomplete", 1, do_mark_boot_complete },
Narayan Kamath1b400322014-04-11 13:17:00 +0100386 { "rmdex", 2, do_rm_dex },
Jeff Sharkey6fe28a02015-04-09 13:10:03 -0700387 { "freecache", 2, do_free_cache },
Jeff Sharkey6fe28a02015-04-09 13:10:03 -0700388 { "linklib", 4, do_linklib },
Robin Lee7c8bec02014-06-10 18:46:26 +0100389 { "mkuserconfig", 1, do_mk_user_config },
Jeff Sharkey6fe28a02015-04-09 13:10:03 -0700390 { "rmuser", 2, do_rm_user },
MÃ¥rten Kongstad63568b12014-01-31 14:42:59 +0100391 { "idmap", 3, do_idmap },
Fyodor Kupolov88ce4ff2015-03-03 12:25:29 -0800392 { "createoatdir", 2, do_create_oat_dir },
Narayan Kamathd845c962015-06-04 13:20:27 +0100393 { "rmpackagedir", 1, do_rm_package_dir },
Calin Juravleedae6692016-03-23 13:55:31 +0000394 { "clear_app_profiles", 1, do_clear_app_profiles },
395 { "destroy_app_profiles", 1, do_destroy_app_profiles },
Jeff Sharkeyc7d1b222016-01-11 13:07:09 -0700396 { "linkfile", 3, do_link_file },
Andreas Gampee65b4fa2016-03-01 11:46:45 -0800397 { "move_ab", 3, do_move_ab },
Mike Lockwood94afecf2012-10-24 10:45:23 -0700398};
399
400static int readx(int s, void *_buf, int count)
401{
Jeff Sharkey19803802015-04-07 12:44:51 -0700402 char *buf = (char *) _buf;
Mike Lockwood94afecf2012-10-24 10:45:23 -0700403 int n = 0, r;
404 if (count < 0) return -1;
405 while (n < count) {
406 r = read(s, buf + n, count - n);
407 if (r < 0) {
408 if (errno == EINTR) continue;
409 ALOGE("read error: %s\n", strerror(errno));
410 return -1;
411 }
412 if (r == 0) {
413 ALOGE("eof\n");
414 return -1; /* EOF */
415 }
416 n += r;
417 }
418 return 0;
419}
420
421static int writex(int s, const void *_buf, int count)
422{
Jeff Sharkey19803802015-04-07 12:44:51 -0700423 const char *buf = (const char *) _buf;
Mike Lockwood94afecf2012-10-24 10:45:23 -0700424 int n = 0, r;
425 if (count < 0) return -1;
426 while (n < count) {
427 r = write(s, buf + n, count - n);
428 if (r < 0) {
429 if (errno == EINTR) continue;
430 ALOGE("write error: %s\n", strerror(errno));
431 return -1;
432 }
433 n += r;
434 }
435 return 0;
436}
437
438
439/* Tokenize the command buffer, locate a matching command,
440 * ensure that the required number of arguments are provided,
441 * call the function(), return the result.
442 */
443static int execute(int s, char cmd[BUFFER_MAX])
444{
445 char reply[REPLY_MAX];
446 char *arg[TOKEN_MAX+1];
447 unsigned i;
448 unsigned n = 0;
449 unsigned short count;
450 int ret = -1;
451
Brian Carlstrom1705fc42013-03-21 18:20:22 -0700452 // ALOGI("execute('%s')\n", cmd);
Mike Lockwood94afecf2012-10-24 10:45:23 -0700453
454 /* default reply is "" */
455 reply[0] = 0;
456
457 /* n is number of args (not counting arg[0]) */
458 arg[0] = cmd;
459 while (*cmd) {
460 if (isspace(*cmd)) {
461 *cmd++ = 0;
462 n++;
463 arg[n] = cmd;
464 if (n == TOKEN_MAX) {
465 ALOGE("too many arguments\n");
466 goto done;
467 }
468 }
Serguei Katkov62bb3852014-10-29 19:38:01 +0600469 if (*cmd) {
470 cmd++;
471 }
Mike Lockwood94afecf2012-10-24 10:45:23 -0700472 }
473
474 for (i = 0; i < sizeof(cmds) / sizeof(cmds[0]); i++) {
475 if (!strcmp(cmds[i].name,arg[0])) {
476 if (n != cmds[i].numargs) {
477 ALOGE("%s requires %d arguments (%d given)\n",
478 cmds[i].name, cmds[i].numargs, n);
479 } else {
480 ret = cmds[i].func(arg + 1, reply);
481 }
482 goto done;
483 }
484 }
485 ALOGE("unsupported command '%s'\n", arg[0]);
486
487done:
488 if (reply[0]) {
489 n = snprintf(cmd, BUFFER_MAX, "%d %s", ret, reply);
490 } else {
491 n = snprintf(cmd, BUFFER_MAX, "%d", ret);
492 }
493 if (n > BUFFER_MAX) n = BUFFER_MAX;
494 count = n;
495
Brian Carlstrom1705fc42013-03-21 18:20:22 -0700496 // ALOGI("reply: '%s'\n", cmd);
Mike Lockwood94afecf2012-10-24 10:45:23 -0700497 if (writex(s, &count, sizeof(count))) return -1;
498 if (writex(s, cmd, count)) return -1;
499 return 0;
500}
501
Andreas Gampe02d0de52015-11-11 20:43:16 -0800502bool initialize_globals() {
503 const char* data_path = getenv("ANDROID_DATA");
504 if (data_path == nullptr) {
505 ALOGE("Could not find ANDROID_DATA");
506 return false;
507 }
508 const char* root_path = getenv("ANDROID_ROOT");
509 if (root_path == nullptr) {
510 ALOGE("Could not find ANDROID_ROOT");
511 return false;
Mike Lockwood94afecf2012-10-24 10:45:23 -0700512 }
513
Andreas Gampe02d0de52015-11-11 20:43:16 -0800514 return init_globals_from_data_and_root(data_path, root_path);
Mike Lockwood94afecf2012-10-24 10:45:23 -0700515}
516
Andreas Gampe02d0de52015-11-11 20:43:16 -0800517static int initialize_directories() {
Mike Lockwood94afecf2012-10-24 10:45:23 -0700518 int res = -1;
519
520 // Read current filesystem layout version to handle upgrade paths
521 char version_path[PATH_MAX];
522 snprintf(version_path, PATH_MAX, "%s.layout_version", android_data_dir.path);
523
524 int oldVersion;
525 if (fs_read_atomic_int(version_path, &oldVersion) == -1) {
526 oldVersion = 0;
527 }
528 int version = oldVersion;
529
Jeff Sharkeye02657d2016-01-13 09:37:46 -0700530 if (version < 2) {
531 SLOGD("Assuming that device has multi-user storage layout; upgrade no longer supported");
Mike Lockwood94afecf2012-10-24 10:45:23 -0700532 version = 2;
533 }
534
Robin Lee07053fc2014-04-29 19:42:01 +0100535 if (ensure_config_user_dirs(0) == -1) {
536 ALOGE("Failed to setup misc for user 0");
537 goto fail;
538 }
539
Robin Lee095c7632014-04-25 15:05:19 +0100540 if (version == 2) {
541 ALOGD("Upgrading to /data/misc/user directories");
542
Robin Lee60fd3fe2014-10-07 16:55:02 +0100543 char misc_dir[PATH_MAX];
544 snprintf(misc_dir, PATH_MAX, "%smisc", android_data_dir.path);
545
546 char keychain_added_dir[PATH_MAX];
547 snprintf(keychain_added_dir, PATH_MAX, "%s/keychain/cacerts-added", misc_dir);
548
549 char keychain_removed_dir[PATH_MAX];
550 snprintf(keychain_removed_dir, PATH_MAX, "%s/keychain/cacerts-removed", misc_dir);
551
Robin Lee095c7632014-04-25 15:05:19 +0100552 DIR *dir;
553 struct dirent *dirent;
Jeff Sharkeye02657d2016-01-13 09:37:46 -0700554 dir = opendir("/data/user");
Robin Lee095c7632014-04-25 15:05:19 +0100555 if (dir != NULL) {
556 while ((dirent = readdir(dir))) {
Robin Lee60fd3fe2014-10-07 16:55:02 +0100557 const char *name = dirent->d_name;
Robin Lee095c7632014-04-25 15:05:19 +0100558
Robin Lee60fd3fe2014-10-07 16:55:02 +0100559 // skip "." and ".."
560 if (name[0] == '.') {
561 if (name[1] == 0) continue;
562 if ((name[1] == '.') && (name[2] == 0)) continue;
563 }
564
565 uint32_t user_id = atoi(name);
566
567 // /data/misc/user/<user_id>
568 if (ensure_config_user_dirs(user_id) == -1) {
569 goto fail;
570 }
571
572 char misc_added_dir[PATH_MAX];
573 snprintf(misc_added_dir, PATH_MAX, "%s/user/%s/cacerts-added", misc_dir, name);
574
575 char misc_removed_dir[PATH_MAX];
576 snprintf(misc_removed_dir, PATH_MAX, "%s/user/%s/cacerts-removed", misc_dir, name);
577
578 uid_t uid = multiuser_get_uid(user_id, AID_SYSTEM);
579 gid_t gid = uid;
580 if (access(keychain_added_dir, F_OK) == 0) {
581 if (copy_dir_files(keychain_added_dir, misc_added_dir, uid, gid) != 0) {
582 ALOGE("Some files failed to copy");
Robin Lee095c7632014-04-25 15:05:19 +0100583 }
Robin Lee60fd3fe2014-10-07 16:55:02 +0100584 }
585 if (access(keychain_removed_dir, F_OK) == 0) {
586 if (copy_dir_files(keychain_removed_dir, misc_removed_dir, uid, gid) != 0) {
587 ALOGE("Some files failed to copy");
Robin Lee095c7632014-04-25 15:05:19 +0100588 }
589 }
590 }
591 closedir(dir);
Robin Lee095c7632014-04-25 15:05:19 +0100592
Robin Lee60fd3fe2014-10-07 16:55:02 +0100593 if (access(keychain_added_dir, F_OK) == 0) {
594 delete_dir_contents(keychain_added_dir, 1, 0);
Robin Lee07053fc2014-04-29 19:42:01 +0100595 }
Robin Lee60fd3fe2014-10-07 16:55:02 +0100596 if (access(keychain_removed_dir, F_OK) == 0) {
597 delete_dir_contents(keychain_removed_dir, 1, 0);
Robin Lee07053fc2014-04-29 19:42:01 +0100598 }
599 }
600
601 version = 3;
Robin Lee095c7632014-04-25 15:05:19 +0100602 }
603
Mike Lockwood94afecf2012-10-24 10:45:23 -0700604 // Persist layout version if changed
605 if (version != oldVersion) {
606 if (fs_write_atomic_int(version_path, version) == -1) {
607 ALOGE("Failed to save version to %s: %s", version_path, strerror(errno));
608 goto fail;
609 }
610 }
611
612 // Success!
613 res = 0;
614
615fail:
Mike Lockwood94afecf2012-10-24 10:45:23 -0700616 return res;
617}
618
Stephen Smalley7abb52b2014-03-26 09:30:37 -0400619static int log_callback(int type, const char *fmt, ...) {
620 va_list ap;
621 int priority;
622
623 switch (type) {
624 case SELINUX_WARNING:
625 priority = ANDROID_LOG_WARN;
626 break;
627 case SELINUX_INFO:
628 priority = ANDROID_LOG_INFO;
629 break;
630 default:
631 priority = ANDROID_LOG_ERROR;
632 break;
633 }
634 va_start(ap, fmt);
635 LOG_PRI_VA(priority, "SELinux", fmt, ap);
636 va_end(ap);
637 return 0;
638}
639
Andreas Gampe02d0de52015-11-11 20:43:16 -0800640static int installd_main(const int argc ATTRIBUTE_UNUSED, char *argv[]) {
Mike Lockwood94afecf2012-10-24 10:45:23 -0700641 char buf[BUFFER_MAX];
642 struct sockaddr addr;
643 socklen_t alen;
Chih-Hung Hsieh99d9fb12014-09-11 14:44:46 -0700644 int lsocket, s;
Stephen Smalleybd558d62013-04-16 12:16:50 -0400645 int selinux_enabled = (is_selinux_enabled() > 0);
Mike Lockwood94afecf2012-10-24 10:45:23 -0700646
Jeff Sharkeye3637242015-04-08 20:56:42 -0700647 setenv("ANDROID_LOG_TAGS", "*:v", 1);
648 android::base::InitLogging(argv);
649
Mike Lockwood94afecf2012-10-24 10:45:23 -0700650 ALOGI("installd firing up\n");
651
Stephen Smalley7abb52b2014-03-26 09:30:37 -0400652 union selinux_callback cb;
653 cb.func_log = log_callback;
654 selinux_set_callback(SELINUX_CB_LOG, cb);
655
Andreas Gampe02d0de52015-11-11 20:43:16 -0800656 if (!initialize_globals()) {
Mike Lockwood94afecf2012-10-24 10:45:23 -0700657 ALOGE("Could not initialize globals; exiting.\n");
658 exit(1);
659 }
660
661 if (initialize_directories() < 0) {
662 ALOGE("Could not create directories; exiting.\n");
663 exit(1);
664 }
665
Stephen Smalleybd558d62013-04-16 12:16:50 -0400666 if (selinux_enabled && selinux_status_open(true) < 0) {
667 ALOGE("Could not open selinux status; exiting.\n");
668 exit(1);
669 }
670
Mike Lockwood94afecf2012-10-24 10:45:23 -0700671 lsocket = android_get_control_socket(SOCKET_PATH);
672 if (lsocket < 0) {
673 ALOGE("Failed to get socket from environment: %s\n", strerror(errno));
674 exit(1);
675 }
676 if (listen(lsocket, 5)) {
677 ALOGE("Listen on socket failed: %s\n", strerror(errno));
678 exit(1);
679 }
680 fcntl(lsocket, F_SETFD, FD_CLOEXEC);
681
682 for (;;) {
683 alen = sizeof(addr);
684 s = accept(lsocket, &addr, &alen);
685 if (s < 0) {
686 ALOGE("Accept failed: %s\n", strerror(errno));
687 continue;
688 }
689 fcntl(s, F_SETFD, FD_CLOEXEC);
690
691 ALOGI("new connection\n");
692 for (;;) {
693 unsigned short count;
694 if (readx(s, &count, sizeof(count))) {
695 ALOGE("failed to read size\n");
696 break;
697 }
698 if ((count < 1) || (count >= BUFFER_MAX)) {
699 ALOGE("invalid size %d\n", count);
700 break;
701 }
702 if (readx(s, buf, count)) {
703 ALOGE("failed to read command\n");
704 break;
705 }
706 buf[count] = 0;
Stephen Smalleybd558d62013-04-16 12:16:50 -0400707 if (selinux_enabled && selinux_status_updated() > 0) {
708 selinux_android_seapp_context_reload();
709 }
Mike Lockwood94afecf2012-10-24 10:45:23 -0700710 if (execute(s, buf)) break;
711 }
712 ALOGI("closing connection\n");
713 close(s);
714 }
715
716 return 0;
717}
Andreas Gampe02d0de52015-11-11 20:43:16 -0800718
719} // namespace installd
720} // namespace android
721
722int main(const int argc, char *argv[]) {
723 return android::installd::installd_main(argc, argv);
724}