mirror of
https://github.com/topjohnwu/Magisk.git
synced 2024-12-01 05:55:26 +00:00
142 lines
3.4 KiB
C
142 lines
3.4 KiB
C
/*
|
|
** Copyright 2017, John Wu (@topjohnwu)
|
|
** Copyright 2010, Adam Shanks (@ChainsDD)
|
|
** Copyright 2008, Zinx Verituse (@zinxv)
|
|
**
|
|
*/
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/wait.h>
|
|
#include <unistd.h>
|
|
#include <stdlib.h>
|
|
#include <fcntl.h>
|
|
#include <stdio.h>
|
|
|
|
#include "magisk.h"
|
|
#include "su.h"
|
|
|
|
/* intent actions */
|
|
#define ACTION_REQUEST "%s/" REQUESTOR_PREFIX ".RequestActivity"
|
|
#define ACTION_RESULT "%s/" REQUESTOR_PREFIX ".SuReceiver"
|
|
|
|
#define AM_PATH "/system/bin/app_process", "/system/bin", "com.android.commands.am.Am"
|
|
|
|
static char *get_command(const struct su_request *to) {
|
|
if (to->command)
|
|
return to->command;
|
|
if (to->shell)
|
|
return to->shell;
|
|
return DEFAULT_SHELL;
|
|
}
|
|
|
|
static void silent_run(char* const args[]) {
|
|
set_identity(0);
|
|
if (fork())
|
|
return;
|
|
int zero = open("/dev/zero", O_RDONLY | O_CLOEXEC);
|
|
dup2(zero, 0);
|
|
int null = open("/dev/null", O_WRONLY | O_CLOEXEC);
|
|
dup2(null, 1);
|
|
dup2(null, 2);
|
|
setenv("CLASSPATH", "/system/framework/am.jar", 1);
|
|
execv(args[0], args);
|
|
PLOGE("exec am");
|
|
_exit(EXIT_FAILURE);
|
|
}
|
|
|
|
static int setup_user(struct su_context *ctx, char* user) {
|
|
switch (ctx->info->dbs.v[SU_MULTIUSER_MODE]) {
|
|
case MULTIUSER_MODE_OWNER_ONLY: /* Should already be denied if not owner */
|
|
case MULTIUSER_MODE_OWNER_MANAGED:
|
|
sprintf(user, "%d", 0);
|
|
return ctx->info->uid / 100000;
|
|
case MULTIUSER_MODE_USER:
|
|
sprintf(user, "%d", ctx->info->uid / 100000);
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
void app_send_result(struct su_context *ctx, policy_t policy) {
|
|
char fromUid[16];
|
|
if (ctx->info->dbs.v[SU_MULTIUSER_MODE] == MULTIUSER_MODE_OWNER_MANAGED)
|
|
sprintf(fromUid, "%d", ctx->info->uid % 100000);
|
|
else
|
|
sprintf(fromUid, "%d", ctx->info->uid);
|
|
|
|
char toUid[16];
|
|
sprintf(toUid, "%d", ctx->to.uid);
|
|
|
|
char pid[16];
|
|
sprintf(pid, "%d", ctx->pid);
|
|
|
|
char user[16];
|
|
int notify = setup_user(ctx, user);
|
|
|
|
char activity[128];
|
|
sprintf(activity, ACTION_RESULT, ctx->info->str.s[SU_MANAGER]);
|
|
|
|
// Send notice to manager, enable logging
|
|
char *result_command[] = {
|
|
AM_PATH, "broadcast", "-n",
|
|
activity,
|
|
"--user", user,
|
|
"--ei", "mode", "0",
|
|
"--ei", "from.uid", fromUid,
|
|
"--ei", "to.uid", toUid,
|
|
"--ei", "pid", pid,
|
|
"--es", "command", get_command(&ctx->to),
|
|
"--es", "action", policy == ALLOW ? "allow" : "deny",
|
|
NULL
|
|
};
|
|
silent_run(result_command);
|
|
|
|
// Send notice to user (if needed) to create toasts
|
|
if (notify) {
|
|
sprintf(fromUid, "%d", ctx->info->uid);
|
|
sprintf(user, "%d", notify);
|
|
char *notify_command[] = {
|
|
AM_PATH, "broadcast", "-n",
|
|
activity,
|
|
"--user", user,
|
|
"--ei", "mode", "1",
|
|
"--ei", "from.uid", fromUid,
|
|
"--es", "action", policy == ALLOW ? "allow" : "deny",
|
|
NULL
|
|
};
|
|
silent_run(notify_command);
|
|
}
|
|
}
|
|
|
|
void app_send_request(struct su_context *ctx) {
|
|
char user[16];
|
|
int notify = setup_user(ctx, user);
|
|
|
|
char activity[128];
|
|
sprintf(activity, ACTION_REQUEST, ctx->info->str.s[SU_MANAGER]);
|
|
|
|
char *request_command[] = {
|
|
AM_PATH, "start", "-n",
|
|
activity,
|
|
"--user", user,
|
|
"--es", "socket", ctx->sock_path,
|
|
"--ez", "timeout", notify ? "false" : "true",
|
|
NULL
|
|
};
|
|
silent_run(request_command);
|
|
|
|
// Send notice to user to tell them root is managed by owner
|
|
if (notify) {
|
|
sprintf(user, "%d", notify);
|
|
sprintf(activity, ACTION_RESULT, ctx->info->str.s[SU_MANAGER]);
|
|
char *notify_command[] = {
|
|
AM_PATH, "broadcast", "-n",
|
|
activity,
|
|
"--user", user,
|
|
"--ei", "mode", "2",
|
|
NULL
|
|
};
|
|
silent_run(notify_command);
|
|
}
|
|
}
|