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Try to use broadcast for su logging and notify

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In commit 8d4c407, native Magisk always launches an activity for
communicating with Magisk Manager. While this works extremely well,
since it also workaround stupid OEMs that blocks broadcasts, it has a
problem: launching an activity will claim the focus of the device,
which could be super annoying in some circumstances.

This commit adds a new feature to run a broadcast test on boot complete.
If Magisk Manager successfully receives the broadcast, it will toggle
a setting in magiskd so all future su loggings and notifies will always
use broadcasts instead of launching activities.

Fix #1412
This commit is contained in:
topjohnwu 2019-05-13 02:01:10 -07:00
parent 89275270f3
commit 80cd85b061
12 changed files with 173 additions and 133 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

84
app/src/main/java/com/topjohnwu/magisk/model/receiver/GeneralReceiver.java
View File

@ -1,84 +0,0 @@
package com.topjohnwu.magisk.model.receiver;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import com.topjohnwu.magisk.App;
import com.topjohnwu.magisk.ClassMap;
import com.topjohnwu.magisk.Config;
import com.topjohnwu.magisk.Const;
import com.topjohnwu.magisk.ui.surequest.SuRequestActivity;
import com.topjohnwu.magisk.utils.DownloadApp;
import com.topjohnwu.magisk.utils.SuLogger;
import com.topjohnwu.magisk.view.Notifications;
import com.topjohnwu.magisk.view.Shortcuts;
import com.topjohnwu.superuser.Shell;
public class GeneralReceiver extends BroadcastReceiver {
private String getPkg(Intent i) {
return i.getData() == null ? "" : i.getData().getEncodedSchemeSpecificPart();
}
@Override
public void onReceive(Context context, Intent intent) {
App app = App.self;
if (intent == null)
return;
String action = intent.getAction();
if (action == null)
return;
switch (action) {
case Intent.ACTION_REBOOT:
case Intent.ACTION_BOOT_COMPLETED:
action = intent.getStringExtra("action");
if (action == null) {
// Actual boot completed event
Shell.su("mm_patch_dtbo").submit(result -> {
if (result.isSuccess())
Notifications.dtboPatched();
});
break;
}
switch (action) {
case SuRequestActivity.REQUEST:
Intent i = new Intent(app, ClassMap.get(SuRequestActivity.class))
.setAction(action)
.putExtra("socket", intent.getStringExtra("socket"))
.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
.addFlags(Intent.FLAG_ACTIVITY_MULTIPLE_TASK);
app.startActivity(i);
break;
case SuRequestActivity.LOG:
SuLogger.handleLogs(intent);
break;
case SuRequestActivity.NOTIFY:
SuLogger.handleNotify(intent);
break;
}
break;
case Intent.ACTION_PACKAGE_REPLACED:
// This will only work pre-O
if (Config.get(Config.Key.SU_REAUTH)) {
app.getDB().deletePolicy(getPkg(intent));
}
break;
case Intent.ACTION_PACKAGE_FULLY_REMOVED:
String pkg = getPkg(intent);
app.getDB().deletePolicy(pkg);
Shell.su("magiskhide --rm " + pkg).submit();
break;
case Intent.ACTION_LOCALE_CHANGED:
Shortcuts.setup(context);
break;
case Const.Key.BROADCAST_MANAGER_UPDATE:
Config.managerLink = intent.getStringExtra(Const.Key.INTENT_SET_LINK);
DownloadApp.upgrade(intent.getStringExtra(Const.Key.INTENT_SET_NAME));
break;
case Const.Key.BROADCAST_REBOOT:
Shell.su("/system/bin/reboot").submit();
break;
}
}
}

80
app/src/main/java/com/topjohnwu/magisk/model/receiver/GeneralReceiver.kt Normal file
View File

@ -0,0 +1,80 @@
package com.topjohnwu.magisk.model.receiver
import android.content.BroadcastReceiver
import android.content.Context
import android.content.Intent
import com.topjohnwu.magisk.ClassMap
import com.topjohnwu.magisk.Config
import com.topjohnwu.magisk.Const
import com.topjohnwu.magisk.data.database.MagiskDB
import com.topjohnwu.magisk.ui.surequest.SuRequestActivity
import com.topjohnwu.magisk.utils.DownloadApp
import com.topjohnwu.magisk.utils.RootUtils
import com.topjohnwu.magisk.utils.SuLogger
import com.topjohnwu.magisk.utils.get
import com.topjohnwu.magisk.view.Notifications
import com.topjohnwu.magisk.view.Shortcuts
import com.topjohnwu.superuser.Shell
open class GeneralReceiver : BroadcastReceiver() {
companion object {
const val REQUEST = "request"
const val LOG = "log"
const val NOTIFY = "notify"
const val TEST = "test"
}
private fun getPkg(intent: Intent): String {
return intent.data?.encodedSchemeSpecificPart ?: ""
}
override fun onReceive(context: Context, intent: Intent?) {
if (intent == null)
return
val mDB: MagiskDB = get()
var action: String? = intent.action ?: return
when (action) {
Intent.ACTION_REBOOT, Intent.ACTION_BOOT_COMPLETED -> {
action = intent.getStringExtra("action")
if (action == null) {
// Actual boot completed event
Shell.su("mm_patch_dtbo").submit { result ->
if (result.isSuccess)
Notifications.dtboPatched()
}
return
}
when (action) {
REQUEST -> {
val i = Intent(context, ClassMap.get<Any>(SuRequestActivity::class.java))
.setAction(action)
.putExtra("socket", intent.getStringExtra("socket"))
.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
.addFlags(Intent.FLAG_ACTIVITY_MULTIPLE_TASK)
context.startActivity(i)
}
LOG -> SuLogger.handleLogs(intent)
NOTIFY -> SuLogger.handleNotify(intent)
TEST -> Shell.su("magisk --use-broadcast").submit()
}
}
Intent.ACTION_PACKAGE_REPLACED ->
// This will only work pre-O
if (Config.get<Boolean>(Config.Key.SU_REAUTH)!!) {
mDB.deletePolicy(getPkg(intent))
}
Intent.ACTION_PACKAGE_FULLY_REMOVED -> {
val pkg = getPkg(intent)
mDB.deletePolicy(pkg)
Shell.su("magiskhide --rm $pkg").submit()
}
Intent.ACTION_LOCALE_CHANGED -> Shortcuts.setup(context)
Const.Key.BROADCAST_MANAGER_UPDATE -> {
Config.managerLink = intent.getStringExtra(Const.Key.INTENT_SET_LINK)
DownloadApp.upgrade(intent.getStringExtra(Const.Key.INTENT_SET_NAME))
}
Const.Key.BROADCAST_REBOOT -> RootUtils.reboot()
}
}
}

13
app/src/main/java/com/topjohnwu/magisk/ui/surequest/SuRequestActivity.kt
View File

@ -10,6 +10,7 @@ import com.topjohnwu.magisk.R
import com.topjohnwu.magisk.databinding.ActivityRequestBinding
import com.topjohnwu.magisk.model.entity.Policy
import com.topjohnwu.magisk.model.events.DieEvent
import com.topjohnwu.magisk.model.receiver.GeneralReceiver
import com.topjohnwu.magisk.ui.base.MagiskActivity
import com.topjohnwu.magisk.utils.SuLogger
import org.koin.androidx.viewmodel.ext.android.viewModel
@ -31,15 +32,15 @@ open class SuRequestActivity : MagiskActivity<SuRequestViewModel, ActivityReques
val intent = intent
val action = intent.action
if (TextUtils.equals(action, REQUEST)) {
if (TextUtils.equals(action, GeneralReceiver.REQUEST)) {
if (!viewModel.handleRequest(intent) {})
finish()
return
}
if (TextUtils.equals(action, LOG))
if (TextUtils.equals(action, GeneralReceiver.LOG))
SuLogger.handleLogs(intent)
else if (TextUtils.equals(action, NOTIFY))
else if (TextUtils.equals(action, GeneralReceiver.NOTIFY))
SuLogger.handleNotify(intent)
finish()
@ -58,10 +59,4 @@ open class SuRequestActivity : MagiskActivity<SuRequestViewModel, ActivityReques
else
ActivityInfo.SCREEN_ORIENTATION_LOCKED
}
companion object {
const val REQUEST = "request"
const val LOG = "log"
const val NOTIFY = "notify"
}
}

3
native/jni/core/bootstages.cpp
View File

@ -732,4 +732,7 @@ void boot_complete(int client) {
install_apk("/data/magisk.apk");
}
}
// Test whether broadcast can be used or not
broadcast_test();
}

5
native/jni/core/daemon.cpp
View File

@ -54,6 +54,7 @@ static void *request_handler(void *args) {
case LATE_START:
case BOOT_COMPLETE:
case SQLITE_CMD:
case BROADCAST_ACK:
if (credential.uid != 0) {
write_int(client, ROOT_REQUIRED);
close(client);
@ -90,6 +91,10 @@ static void *request_handler(void *args) {
case SQLITE_CMD:
exec_sql(client);
break;
case BROADCAST_ACK:
LOGD("* Use broadcasts for su logging and notify\n");
CONNECT_BROADCAST = true;
close(client);
default:
close(client);
break;

2
native/jni/core/db.cpp
View File

@ -233,7 +233,7 @@ int get_db_strings(db_strings &str, int key) {
return 0;
}
int get_uid_policy(int uid, su_access &su) {
int get_uid_policy(su_access &su, int uid) {
char query[256], *err;
sprintf(query, "SELECT policy, logging, notification FROM policies "
"WHERE uid=%d AND (until=0 OR until>%li)", uid, time(nullptr));

35
native/jni/core/magisk.cpp
View File

@ -12,6 +12,8 @@
#include <db.h>
#include <flags.h>
using namespace std::literals;
[[noreturn]] static void usage() {
fprintf(stderr,
FULL_VER(Magisk) " multi-call binary\n"
@ -33,6 +35,7 @@
" --clone-attr SRC DEST clone permission, owner, and selinux context\n"
" --clone SRC DEST clone SRC to DEST\n"
" --sqlite SQL exec SQL to Magisk database\n"
" --use-broadcast use broadcast for su logging and notify\n"
"\n"
"Supported init triggers:\n"
" post-fs-data, service, boot-complete\n"
@ -48,66 +51,70 @@
int magisk_main(int argc, char *argv[]) {
if (argc < 2)
usage();
if (strcmp(argv[1], "-c") == 0) {
if (argv[1] == "-c"sv) {
printf(MAGISK_VERSION ":MAGISK (" str(MAGISK_VER_CODE) ")\n");
return 0;
} else if (strcmp(argv[1], "-v") == 0) {
} else if (argv[1] == "-v"sv) {
int fd = connect_daemon();
write_int(fd, CHECK_VERSION);
char *v = read_string(fd);
printf("%s\n", v);
free(v);
return 0;
} else if (strcmp(argv[1], "-V") == 0) {
} else if (argv[1] == "-V"sv) {
int fd = connect_daemon();
write_int(fd, CHECK_VERSION_CODE);
printf("%d\n", read_int(fd));
return 0;
} else if (strcmp(argv[1], "--list") == 0) {
} else if (argv[1] == "--list"sv) {
for (int i = 0; applet_names[i]; ++i)
printf("%s\n", applet_names[i]);
return 0;
} else if (strcmp(argv[1], "--unlock-blocks") == 0) {
} else if (argv[1] == "--unlock-blocks"sv) {
unlock_blocks();
return 0;
} else if (strcmp(argv[1], "--restorecon") == 0) {
} else if (argv[1] == "--restorecon"sv) {
restore_rootcon();
restorecon();
return 0;
} else if (strcmp(argv[1], "--clone-attr") == 0) {
} else if (argv[1] == "--clone-attr"sv) {
if (argc < 4) usage();
clone_attr(argv[2], argv[3]);
return 0;
} else if (strcmp(argv[1], "--clone") == 0) {
} else if (argv[1] == "--clone"sv) {
if (argc < 4) usage();
cp_afc(argv[2], argv[3]);
return 0;
} else if (strcmp(argv[1], "--daemon") == 0) {
} else if (argv[1] == "--daemon"sv) {
int fd = connect_daemon(true);
write_int(fd, DO_NOTHING);
return 0;
} else if (strcmp(argv[1], "--post-fs-data") == 0) {
} else if (argv[1] == "--post-fs-data"sv) {
int fd = connect_daemon(true);
write_int(fd, POST_FS_DATA);
return read_int(fd);
} else if (strcmp(argv[1], "--service") == 0) {
} else if (argv[1] == "--service"sv) {
int fd = connect_daemon(true);
write_int(fd, LATE_START);
return read_int(fd);
} else if (strcmp(argv[1], "--boot-complete") == 0) {
} else if (argv[1] == "--boot-complete"sv) {
int fd = connect_daemon(true);
write_int(fd, BOOT_COMPLETE);
return read_int(fd);
} else if (strcmp(argv[1], "--sqlite") == 0) {
} else if (argv[1] == "--sqlite"sv) {
int fd = connect_daemon();
write_int(fd, SQLITE_CMD);
write_string(fd, argv[2]);
send_fd(fd, STDOUT_FILENO);
return read_int(fd);
} else if (argv[1] == "--use-broadcast"sv) {
int fd = connect_daemon();
write_int(fd, BROADCAST_ACK);
return 0;
}
#if 0
/* Entry point for testing stuffs */
else if (strcmp(argv[1], "--test") == 0) {
else if (argv[1] == "--test"sv) {
return 0;
}
#endif

4
native/jni/include/daemon.h
View File

@ -17,7 +17,7 @@ enum {
BOOT_COMPLETE,
MAGISKHIDE,
SQLITE_CMD,
ZYGOTE_NOTIFY,
BROADCAST_ACK,
};
// Return codes for daemon
@ -82,6 +82,8 @@ void magiskhide_handler(int client);
*************/
void su_daemon_handler(int client, struct ucred *credential);
void broadcast_test();
extern int SDK_INT;
extern bool RECOVERY_MODE;
extern bool CONNECT_BROADCAST;

2
native/jni/include/db.h
View File

@ -154,7 +154,7 @@ typedef std::function<bool(db_row&)> db_row_cb;
int get_db_settings(db_settings &cfg, int key = -1);
int get_db_strings(db_strings &str, int key = -1);
int get_uid_policy(int uid, su_access &su);
int get_uid_policy(su_access &su, int uid);
int validate_manager(std::string &alt_pkg, int userid, struct stat *st);
void exec_sql(int client);
char *db_exec(const char *sql);

74
native/jni/su/connect.cpp
View File

@ -11,12 +11,21 @@
#include "su.h"
bool CONNECT_BROADCAST;
#define START_ACTIVITY \
"/system/bin/app_process", "/system/bin", "com.android.commands.am.Am", \
"start", "-n", nullptr, "--user", nullptr, "-f", "0x18000020", "-a"
// 0x18000020 = FLAG_ACTIVITY_NEW_TASK|FLAG_ACTIVITY_MULTIPLE_TASK|FLAG_INCLUDE_STOPPED_PACKAGES
#define START_BROADCAST \
"/system/bin/app_process", "/system/bin", "com.android.commands.am.Am", \
"broadcast", "-n", nullptr, "--user", nullptr, "-f", "0x00000020", \
"-a", "android.intent.action.REBOOT", "--es", "action"
// 0x00000020 = FLAG_INCLUDE_STOPPED_PACKAGES
static inline const char *get_command(const su_request *to) {
if (to->command[0])
return to->command;
@ -39,9 +48,9 @@ static inline void get_uid(char *uid, su_info *info) {
: info->uid);
}
static void silent_run(const char **args, su_info *info) {
static void exec_am_cmd(const char **args, su_info *info) {
char component[128];
sprintf(component, "%s/a.m", info->str[SU_MANAGER].data());
sprintf(component, "%s/%s", info->str[SU_MANAGER].data(), args[3][0] == 'b' ? "a.h" : "a.m");
char user[8];
get_user(user, info);
@ -62,6 +71,16 @@ static void silent_run(const char **args, su_info *info) {
exec_command(exec);
}
#define LOG_BODY \
"log", \
"--ei", "from.uid", fromUid, \
"--ei", "to.uid", toUid, \
"--ei", "pid", pid, \
"--ei", "policy", policy, \
"--es", "command", get_command(&ctx->req), \
"--ez", "notify", ctx->info->access.notify ? "true" : "false", \
nullptr
void app_log(su_context *ctx) {
char fromUid[8];
get_uid(fromUid, ctx->info);
@ -75,19 +94,21 @@ void app_log(su_context *ctx) {
char policy[2];
sprintf(policy, "%d", ctx->info->access.policy);
const char *cmd[] = {
START_ACTIVITY, "log",
"--ei", "from.uid", fromUid,
"--ei", "to.uid", toUid,
"--ei", "pid", pid,
"--ei", "policy", policy,
"--es", "command", get_command(&ctx->req),
"--ez", "notify", ctx->info->access.notify ? "true" : "false",
nullptr
};
silent_run(cmd, ctx->info);
if (CONNECT_BROADCAST) {
const char *cmd[] = { START_BROADCAST, LOG_BODY };
exec_am_cmd(cmd, ctx->info);
} else {
const char *cmd[] = { START_ACTIVITY, LOG_BODY };
exec_am_cmd(cmd, ctx->info);
}
}
#define NOTIFY_BODY \
"notify", \
"--ei", "from.uid", fromUid, \
"--ei", "policy", policy, \
nullptr
void app_notify(su_context *ctx) {
char fromUid[8];
get_uid(fromUid, ctx->info);
@ -95,13 +116,14 @@ void app_notify(su_context *ctx) {
char policy[2];
sprintf(policy, "%d", ctx->info->access.policy);
const char *cmd[] = {
START_ACTIVITY, "notify",
"--ei", "from.uid", fromUid,
"--ei", "policy", policy,
nullptr
};
silent_run(cmd, ctx->info);
if (CONNECT_BROADCAST) {
const char *cmd[] = { START_BROADCAST, NOTIFY_BODY };
exec_am_cmd(cmd, ctx->info);
} else {
const char *cmd[] = { START_ACTIVITY, NOTIFY_BODY };
exec_am_cmd(cmd, ctx->info);
}
}
void app_connect(const char *socket, su_info *info) {
@ -110,7 +132,17 @@ void app_connect(const char *socket, su_info *info) {
"--es", "socket", socket,
nullptr
};
silent_run(cmd, info);
exec_am_cmd(cmd, info);
}
void broadcast_test() {
su_info info;
get_db_settings(info.cfg);
get_db_strings(info.str);
validate_manager(info.str[SU_MANAGER], 0, &info.mgr_st);
const char *cmd[] = { START_BROADCAST, "test", nullptr };
exec_am_cmd(cmd, &info);
}
void socket_send_request(int fd, su_info *info) {

2
native/jni/su/su.h
View File

@ -32,7 +32,7 @@ public:
int ref;
time_t timestamp;
su_info(unsigned uid);
su_info(unsigned uid = 0);
~su_info();
void lock();
void unlock();

2
native/jni/su/su_daemon.cpp
View File

@ -83,7 +83,7 @@ static void database_check(su_info *info) {
}
if (uid > 0)
get_uid_policy(uid, info->access);
get_uid_policy(info->access, uid);
// We need to check our manager
if (info->access.log || info->access.notify)