mirror of
https://github.com/radareorg/radare2.git
synced 2024-12-04 11:43:39 +00:00
610 lines
15 KiB
C
610 lines
15 KiB
C
/* radare - LGPL - Copyright 2007-2019 - pancake */
|
|
|
|
#include <r_main.h>
|
|
#include <r_util.h>
|
|
#include <r_util/r_print.h>
|
|
|
|
// dont use fixed sized buffers
|
|
#define STDIN_BUFFER_SIZE 354096
|
|
|
|
static RNum *num;
|
|
static int help();
|
|
static ut64 flags = 0;
|
|
static int use_stdin();
|
|
static int force_mode = 0;
|
|
static int rax(char *str, int len, int last);
|
|
static const char *nl = "";
|
|
|
|
static int format_output(char mode, const char *s) {
|
|
ut64 n = r_num_math (num, s);
|
|
char strbits[65];
|
|
if (force_mode) {
|
|
mode = force_mode;
|
|
}
|
|
if (flags & 2) {
|
|
ut64 n2 = n;
|
|
r_mem_swapendian ((ut8 *) &n, (ut8 *) &n2, (n >> 32)? 8: 4);
|
|
}
|
|
switch (mode) {
|
|
case 'I':
|
|
printf ("%" PFMT64d "\n", n);
|
|
break;
|
|
case '0':
|
|
printf ("0x%" PFMT64x "\n", n);
|
|
break;
|
|
case 'F': {
|
|
float *f = (float *) &n;
|
|
printf ("%ff\n", *f);
|
|
} break;
|
|
case 'f': printf ("%.01lf\n", num->fvalue); break;
|
|
case 'l':
|
|
R_STATIC_ASSERT (sizeof (float) == 4);
|
|
float f = (float) num->fvalue;
|
|
ut8 *p = (ut8 *) &f;
|
|
printf ("Fx%02x%02x%02x%02x\n", p[3], p[2], p[1], p[0]);
|
|
break;
|
|
case 'O': printf ("0%" PFMT64o "\n", n); break;
|
|
case 'B':
|
|
if (n) {
|
|
r_num_to_bits (strbits, n);
|
|
printf ("%sb\n", strbits);
|
|
} else {
|
|
printf ("0b\n");
|
|
}
|
|
break;
|
|
case 'T':
|
|
if (n) {
|
|
r_num_to_trits (strbits, n);
|
|
printf ("%st\n", strbits);
|
|
} else {
|
|
printf ("0t\n");
|
|
}
|
|
break;
|
|
default:
|
|
eprintf ("Unknown output mode %d\n", mode);
|
|
break;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
static void print_ascii_table() {
|
|
printf("%s", ret_ascii_table());
|
|
}
|
|
|
|
static int help() {
|
|
printf (
|
|
" =[base] ; rax2 =10 0x46 -> output in base 10\n"
|
|
" int -> hex ; rax2 10\n"
|
|
" hex -> int ; rax2 0xa\n"
|
|
" -int -> hex ; rax2 -77\n"
|
|
" -hex -> int ; rax2 0xffffffb3\n"
|
|
" int -> bin ; rax2 b30\n"
|
|
" int -> ternary ; rax2 t42\n"
|
|
" bin -> int ; rax2 1010d\n"
|
|
" ternary -> int ; rax2 1010dt\n"
|
|
" float -> hex ; rax2 3.33f\n"
|
|
" hex -> float ; rax2 Fx40551ed8\n"
|
|
" oct -> hex ; rax2 35o\n"
|
|
" hex -> oct ; rax2 Ox12 (O is a letter)\n"
|
|
" bin -> hex ; rax2 1100011b\n"
|
|
" hex -> bin ; rax2 Bx63\n"
|
|
" ternary -> hex ; rax2 212t\n"
|
|
" hex -> ternary ; rax2 Tx23\n"
|
|
" raw -> hex ; rax2 -S < /binfile\n"
|
|
" hex -> raw ; rax2 -s 414141\n"
|
|
" -l ; append newline to output (for -E/-D/-r/..\n"
|
|
" -a show ascii table ; rax2 -a\n"
|
|
" -b bin -> str ; rax2 -b 01000101 01110110\n"
|
|
" -B str -> bin ; rax2 -B hello\n"
|
|
" -d force integer ; rax2 -d 3 -> 3 instead of 0x3\n"
|
|
" -e swap endianness ; rax2 -e 0x33\n"
|
|
" -D base64 decode ;\n"
|
|
" -E base64 encode ;\n"
|
|
" -f floating point ; rax2 -f 6.3+2.1\n"
|
|
" -F stdin slurp code hex ; rax2 -F < shellcode.[c/py/js]\n"
|
|
" -h help ; rax2 -h\n"
|
|
" -i dump as C byte array ; rax2 -i < bytes\n"
|
|
" -k keep base ; rax2 -k 33+3 -> 36\n"
|
|
" -K randomart ; rax2 -K 0x34 1020304050\n"
|
|
" -L bin -> hex(bignum) ; rax2 -L 111111111 # 0x1ff\n"
|
|
" -n binary number ; rax2 -n 0x1234 # 34120000\n"
|
|
" -o octalstr -> raw ; rax2 -o \\162 \\62 # r2\n"
|
|
" -N binary number ; rax2 -N 0x1234 # \\x34\\x12\\x00\\x00\n"
|
|
" -r r2 style output ; rax2 -r 0x1234\n"
|
|
" -s hexstr -> raw ; rax2 -s 43 4a 50\n"
|
|
" -S raw -> hexstr ; rax2 -S < /bin/ls > ls.hex\n"
|
|
" -t tstamp -> str ; rax2 -t 1234567890\n"
|
|
" -x hash string ; rax2 -x linux osx\n"
|
|
" -u units ; rax2 -u 389289238 # 317.0M\n"
|
|
" -w signed word ; rax2 -w 16 0xffff\n"
|
|
" -v version ; rax2 -v\n");
|
|
return true;
|
|
}
|
|
|
|
static int rax(char *str, int len, int last) {
|
|
ut8 *buf;
|
|
char *p, out_mode = (flags & 128)? 'I': '0';
|
|
int i;
|
|
if (!(flags & 4) || !len) {
|
|
len = strlen (str);
|
|
}
|
|
if ((flags & 4)) {
|
|
goto dotherax;
|
|
}
|
|
if (*str == '=') {
|
|
switch (atoi (str + 1)) {
|
|
case 2: force_mode = 'B'; break;
|
|
case 3: force_mode = 'T'; break;
|
|
case 8: force_mode = 'O'; break;
|
|
case 10: force_mode = 'I'; break;
|
|
case 16: force_mode = '0'; break;
|
|
case 0: force_mode = str[1]; break;
|
|
}
|
|
return true;
|
|
}
|
|
if (*str == '-') {
|
|
while (str[1] && str[1] != ' ') {
|
|
switch (str[1]) {
|
|
case 'l': nl = "\n"; break;
|
|
case 'a': print_ascii_table (); return 0;
|
|
case 's': flags ^= 1; break;
|
|
case 'e': flags ^= 1 << 1; break;
|
|
case 'S': flags ^= 1 << 2; break;
|
|
case 'b': flags ^= 1 << 3; break;
|
|
case 'B': flags ^= 1 << 17; break;
|
|
case 'x': flags ^= 1 << 4; break;
|
|
case 'k': flags ^= 1 << 5; break;
|
|
case 'f': flags ^= 1 << 6; break;
|
|
case 'd': flags ^= 1 << 7; break;
|
|
case 'K': flags ^= 1 << 8; break;
|
|
case 'n': flags ^= 1 << 9; break;
|
|
case 'u': flags ^= 1 << 10; break;
|
|
case 't': flags ^= 1 << 11; break;
|
|
case 'E': flags ^= 1 << 12; break;
|
|
case 'D': flags ^= 1 << 13; break;
|
|
case 'F': flags ^= 1 << 14; break;
|
|
case 'N': flags ^= 1 << 15; break;
|
|
case 'w': flags ^= 1 << 16; break;
|
|
case 'r': flags ^= 1 << 18; break;
|
|
case 'L': flags ^= 1 << 19; break;
|
|
case 'i': flags ^= 1 << 21; break;
|
|
case 'o': flags ^= 1 << 22; break;
|
|
case 'v': return r_main_version_print ("rax2");
|
|
case '\0': return !use_stdin ();
|
|
default:
|
|
/* not as complete as for positive numbers */
|
|
out_mode = (flags ^ 32)? '0': 'I';
|
|
if (str[1] >= '0' && str[1] <= '9') {
|
|
if (str[2] == 'x') {
|
|
out_mode = 'I';
|
|
} else if (r_str_endswith (str, "f")) {
|
|
out_mode = 'l';
|
|
}
|
|
return format_output (out_mode, str);
|
|
}
|
|
printf ("Usage: rax2 [options] [expr ...]\n");
|
|
return help ();
|
|
}
|
|
str++;
|
|
}
|
|
if (last) {
|
|
return !use_stdin ();
|
|
}
|
|
return true;
|
|
}
|
|
if (!flags && r_str_nlen (str, 2) == 1) {
|
|
if (*str == 'q') {
|
|
return false;
|
|
}
|
|
if (*str == 'h' || *str == '?') {
|
|
help ();
|
|
return false;
|
|
}
|
|
}
|
|
dotherax:
|
|
if (flags & 1) { // -s
|
|
int n = ((strlen (str)) >> 1) + 1;
|
|
buf = malloc (n);
|
|
if (buf) {
|
|
memset (buf, '\0', n);
|
|
n = r_hex_str2bin (str, (ut8 *) buf);
|
|
if (n > 0) {
|
|
fwrite (buf, n, 1, stdout);
|
|
}
|
|
#if __EMSCRIPTEN__
|
|
puts ("");
|
|
#else
|
|
if (nl && *nl) {
|
|
puts ("");
|
|
}
|
|
#endif
|
|
fflush (stdout);
|
|
free (buf);
|
|
}
|
|
return true;
|
|
}
|
|
if (flags & (1 << 2)) { // -S
|
|
for (i = 0; i < len; i++) {
|
|
printf ("%02x", (ut8) str[i]);
|
|
}
|
|
printf ("\n");
|
|
return true;
|
|
} else if (flags & (1 << 3)) { // -b
|
|
int i, len;
|
|
ut8 buf[4096];
|
|
len = r_str_binstr2bin (str, buf, sizeof (buf));
|
|
for (i = 0; i < len; i++) {
|
|
printf ("%c", buf[i]);
|
|
}
|
|
return true;
|
|
} else if (flags & (1 << 4)) { // -x
|
|
int h = r_str_hash (str);
|
|
printf ("0x%x\n", h);
|
|
return true;
|
|
} else if (flags & (1 << 5)) { // -k
|
|
out_mode = 'I';
|
|
} else if (flags & (1 << 6)) { // -f
|
|
out_mode = 'f';
|
|
} else if (flags & (1 << 8)) { // -K
|
|
int n = ((strlen (str)) >> 1) + 1;
|
|
char *s = NULL;
|
|
ut32 *m;
|
|
buf = (ut8 *) malloc (n);
|
|
if (!buf) {
|
|
return false;
|
|
}
|
|
m = (ut32 *) buf;
|
|
memset (buf, '\0', n);
|
|
n = r_hex_str2bin (str, (ut8 *) buf);
|
|
if (n < 1 || !memcmp (str, "0x", 2)) {
|
|
ut64 q = r_num_math (num, str);
|
|
s = r_print_randomart ((ut8 *) &q, sizeof (q), q);
|
|
printf ("%s\n", s);
|
|
free (s);
|
|
} else {
|
|
s = r_print_randomart ((ut8 *) buf, n, *m);
|
|
printf ("%s\n", s);
|
|
free (s);
|
|
}
|
|
free (m);
|
|
return true;
|
|
} else if (flags & (1 << 9)) { // -n
|
|
ut64 n = r_num_math (num, str);
|
|
if (n >> 32) {
|
|
/* is 64 bit value */
|
|
ut8 *np = (ut8 *) &n;
|
|
if (flags & 1) {
|
|
fwrite (&n, sizeof (n), 1, stdout);
|
|
} else {
|
|
printf ("%02x%02x%02x%02x"
|
|
"%02x%02x%02x%02x\n",
|
|
np[0], np[1], np[2], np[3],
|
|
np[4], np[5], np[6], np[7]);
|
|
}
|
|
} else {
|
|
/* is 32 bit value */
|
|
ut32 n32 = (ut32) (n & UT32_MAX);
|
|
ut8 *np = (ut8 *) &n32;
|
|
if (flags & 1) {
|
|
fwrite (&n32, sizeof (n32), 1, stdout);
|
|
} else {
|
|
printf ("%02x%02x%02x%02x\n",
|
|
np[0], np[1], np[2], np[3]);
|
|
}
|
|
}
|
|
fflush (stdout);
|
|
return true;
|
|
} else if (flags & (1 << 17)) { // -B (bin -> str)
|
|
int i = 0;
|
|
// TODO: move to r_util
|
|
for (i = 0; i < strlen (str); i++) {
|
|
ut8 ch = str[i];
|
|
printf ("%d%d%d%d"
|
|
"%d%d%d%d",
|
|
ch & 128? 1: 0,
|
|
ch & 64? 1: 0,
|
|
ch & 32? 1: 0,
|
|
ch & 16? 1: 0,
|
|
ch & 8? 1: 0,
|
|
ch & 4? 1: 0,
|
|
ch & 2? 1: 0,
|
|
ch & 1? 1: 0);
|
|
}
|
|
return true;
|
|
} else if (flags & (1 << 16)) { // -w
|
|
ut64 n = r_num_math (num, str);
|
|
if (n >> 31) {
|
|
// is >32bit
|
|
n = (st64) (st32) n;
|
|
} else if (n >> 14) {
|
|
n = (st64) (st16) n;
|
|
} else if (n >> 7) {
|
|
n = (st64) (st8) n;
|
|
}
|
|
printf ("%" PFMT64d "\n", n);
|
|
fflush (stdout);
|
|
return true;
|
|
} else if (flags & (1 << 15)) { // -N
|
|
ut64 n = r_num_math (num, str);
|
|
if (n >> 32) {
|
|
/* is 64 bit value */
|
|
ut8 *np = (ut8 *) &n;
|
|
if (flags & 1) {
|
|
fwrite (&n, sizeof (n), 1, stdout);
|
|
} else {
|
|
printf ("\\x%02x\\x%02x\\x%02x\\x%02x"
|
|
"\\x%02x\\x%02x\\x%02x\\x%02x\n",
|
|
np[0], np[1], np[2], np[3],
|
|
np[4], np[5], np[6], np[7]);
|
|
}
|
|
} else {
|
|
/* is 32 bit value */
|
|
ut32 n32 = (ut32) (n & UT32_MAX);
|
|
ut8 *np = (ut8 *) &n32;
|
|
if (flags & 1) {
|
|
fwrite (&n32, sizeof (n32), 1, stdout);
|
|
} else {
|
|
printf ("\\x%02x\\x%02x\\x%02x\\x%02x\n",
|
|
np[0], np[1], np[2], np[3]);
|
|
}
|
|
}
|
|
fflush (stdout);
|
|
return true;
|
|
} else if (flags & (1 << 10)) { // -u
|
|
char buf[8];
|
|
r_num_units (buf, sizeof (buf), r_num_math (NULL, str));
|
|
printf ("%s\n", buf);
|
|
return true;
|
|
} else if (flags & (1 << 11)) { // -t
|
|
ut32 n = r_num_math (num, str);
|
|
RPrint *p = r_print_new ();
|
|
r_print_date_unix (p, (const ut8 *) &n, sizeof (ut32));
|
|
r_print_free (p);
|
|
return true;
|
|
} else if (flags & (1 << 12)) { // -E
|
|
const int len = strlen (str);
|
|
/* http://stackoverflow.com/questions/4715415/base64-what-is-the-worst-possible-increase-in-space-usage */
|
|
char *out = calloc (sizeof (char), (len + 2) / 3 * 4 + 1); // ceil(len/3)*4 plus 1 for NUL
|
|
if (out) {
|
|
r_base64_encode (out, (const ut8 *) str, len);
|
|
printf ("%s%s", out, nl);
|
|
fflush (stdout);
|
|
free (out);
|
|
}
|
|
return true;
|
|
} else if (flags & (1 << 13)) { // -D
|
|
const int len = strlen (str);
|
|
ut8 *out = calloc (sizeof (ut8), len / 4 * 3 + 1);
|
|
if (out) {
|
|
r_base64_decode (out, str, len);
|
|
printf ("%s%s", out, nl);
|
|
fflush (stdout);
|
|
free (out);
|
|
}
|
|
return true;
|
|
} else if (flags & 1 << 14) { // -F
|
|
char *str = r_stdin_slurp (NULL);
|
|
if (str) {
|
|
char *res = r_hex_from_code (str);
|
|
if (res) {
|
|
printf ("%s\n", res);
|
|
fflush (stdout);
|
|
free (res);
|
|
} else {
|
|
eprintf ("Invalid input.\n");
|
|
}
|
|
free (str);
|
|
}
|
|
return false;
|
|
} else if (flags & (1 << 18)) { // -r
|
|
char *asnum, unit[8];
|
|
char out[128];
|
|
ut32 n32, s, a;
|
|
double d;
|
|
float f;
|
|
ut64 n = r_num_math (num, str);
|
|
|
|
if (num->dbz) {
|
|
eprintf ("RNum ERROR: Division by Zero\n");
|
|
return false;
|
|
}
|
|
n32 = (ut32) (n & UT32_MAX);
|
|
asnum = r_num_as_string (NULL, n, false);
|
|
memcpy (&f, &n32, sizeof (f));
|
|
memcpy (&d, &n, sizeof (d));
|
|
|
|
/* decimal, hexa, octal */
|
|
s = n >> 16 << 12;
|
|
a = n & 0x0fff;
|
|
r_num_units (unit, sizeof (unit), n);
|
|
#if 0
|
|
eprintf ("%" PFMT64d " 0x%" PFMT64x " 0%" PFMT64o
|
|
" %s %04x:%04x ",
|
|
n, n, n, unit, s, a);
|
|
|
|
if (n >> 32) {
|
|
eprintf ("%" PFMT64d " ", (st64) n);
|
|
} else {
|
|
eprintf ("%d ", (st32) n);
|
|
}
|
|
if (asnum) {
|
|
eprintf ("\"%s\" ", asnum);
|
|
free (asnum);
|
|
}
|
|
/* binary and floating point */
|
|
r_str_bits (out, (const ut8 *) &n, sizeof (n), NULL);
|
|
eprintf ("%s %.01lf %ff %lf\n",
|
|
out, num->fvalue, f, d);
|
|
#endif
|
|
printf ("hex 0x%"PFMT64x"\n", n);
|
|
printf ("octal 0%"PFMT64o"\n", n);
|
|
printf ("unit %s\n", unit);
|
|
printf ("segment %04x:%04x\n", s, a);
|
|
if (n >> 32) {
|
|
printf ("int64 %"PFMT64d"\n", (st64)n);
|
|
} else {
|
|
printf ("int32 %d\n", (st32)n);
|
|
}
|
|
if (asnum) {
|
|
printf ("string \"%s\"\n", asnum);
|
|
free (asnum);
|
|
}
|
|
/* binary and floating point */
|
|
r_str_bits64 (out, n);
|
|
memcpy (&f, &n, sizeof (f));
|
|
memcpy (&d, &n, sizeof (d));
|
|
printf ("binary 0b%s\n", out);
|
|
printf ("float: %ff\n", f);
|
|
printf ("double: %lf\n", d);
|
|
|
|
/* ternary */
|
|
r_num_to_trits (out, n);
|
|
printf ("trits 0t%s\n", out);
|
|
|
|
return true;
|
|
} else if (flags & (1 << 19)) { // -L
|
|
r_print_hex_from_bin (NULL, str);
|
|
return true;
|
|
} else if (flags & (1 << 21)) { // -i
|
|
static const char start[] = "unsigned char buf[] = {";
|
|
printf (start);
|
|
/* resonable amount of bytes per line */
|
|
const int byte_per_col = 12;
|
|
for (i = 0; i < len-1; i++) {
|
|
/* wrapping every N bytes */
|
|
if (i % byte_per_col == 0) {
|
|
printf ("\n ");
|
|
}
|
|
printf ("0x%02x, ", (ut8) str[i]);
|
|
}
|
|
/* some care for the last element */
|
|
if (i % byte_per_col == 0) {
|
|
printf("\n ");
|
|
}
|
|
printf ("0x%02x\n", (ut8) str[len-1]);
|
|
printf ("};\n");
|
|
printf ("unsigned int buf_len = %d;\n", len);
|
|
return true;
|
|
} else if (flags & (1 << 22)) { // -o
|
|
// check -r
|
|
// flags & (1 << 18)
|
|
char *asnum, *modified_str;
|
|
|
|
// To distinguish octal values.
|
|
if (*str != '0') {
|
|
modified_str = r_str_newf ("0%s", str);
|
|
} else {
|
|
modified_str = r_str_newf (str);
|
|
}
|
|
|
|
ut64 n = r_num_math (num, modified_str);
|
|
free (modified_str);
|
|
if (num->dbz) {
|
|
eprintf ("RNum ERROR: Division by Zero\n");
|
|
return false;
|
|
}
|
|
|
|
asnum = r_num_as_string (NULL, n, false);
|
|
if (asnum) {
|
|
printf ("%s", asnum);
|
|
free (asnum);
|
|
} else {
|
|
printf("No String Possible");
|
|
}
|
|
return true;
|
|
}
|
|
|
|
if (r_str_startswith (str, "0x")) {
|
|
out_mode = (flags & 32)? '0': 'I';
|
|
} else if (r_str_startswith (str, "b")) {
|
|
out_mode = 'B';
|
|
str++;
|
|
} else if (r_str_startswith (str, "t")) {
|
|
out_mode = 'T';
|
|
str++;
|
|
} else if (r_str_startswith (str, "Fx")) {
|
|
out_mode = 'F';
|
|
*str = '0';
|
|
} else if (r_str_startswith (str, "Bx")) {
|
|
out_mode = 'B';
|
|
*str = '0';
|
|
} else if (r_str_startswith (str, "Tx")) {
|
|
out_mode = 'T';
|
|
*str = '0';
|
|
} else if (r_str_startswith (str, "Ox")) {
|
|
out_mode = 'O';
|
|
*str = '0';
|
|
} else if (r_str_endswith (str, "d")) {
|
|
out_mode = 'I';
|
|
str[strlen (str) - 1] = 'b';
|
|
// TODO: Move print into format_output
|
|
} else if (r_str_endswith (str, "f")) {
|
|
out_mode = 'l';
|
|
} else if (r_str_endswith (str, "dt")) {
|
|
out_mode = 'I';
|
|
str[strlen (str) - 2] = 't';
|
|
str[strlen (str) - 1] = '\0';
|
|
}
|
|
while ((p = strchr (str, ' '))) {
|
|
*p = 0;
|
|
format_output (out_mode, str);
|
|
str = p + 1;
|
|
}
|
|
if (*str) {
|
|
format_output (out_mode, str);
|
|
}
|
|
return true;
|
|
}
|
|
|
|
static int use_stdin() {
|
|
char *buf = calloc (1, STDIN_BUFFER_SIZE + 1);
|
|
int l; // , sflag = (flags & 5);
|
|
if (!buf) {
|
|
return 0;
|
|
}
|
|
if (!(flags & (1<<14))) {
|
|
for (l = 0; l >= 0 && l < STDIN_BUFFER_SIZE; l++) {
|
|
// make sure we don't read beyond boundaries
|
|
int n = read (0, buf + l, STDIN_BUFFER_SIZE - l);
|
|
if (n < 1) {
|
|
break;
|
|
}
|
|
l += n;
|
|
if (buf[l - 1] == 0) {
|
|
l--;
|
|
continue;
|
|
}
|
|
buf[n] = 0;
|
|
// if (sflag && strlen (buf) < STDIN_BUFFER_SIZE) // -S
|
|
buf[STDIN_BUFFER_SIZE] = '\0';
|
|
if (!rax (buf, l, 0)) {
|
|
break;
|
|
}
|
|
l = -1;
|
|
}
|
|
} else {
|
|
l = 1;
|
|
}
|
|
if (l > 0) {
|
|
rax (buf, l, 0);
|
|
}
|
|
free (buf);
|
|
return 0;
|
|
}
|
|
|
|
R_API int r_main_rax2(int argc, char **argv) {
|
|
int i;
|
|
num = r_num_new (NULL, NULL, NULL);
|
|
if (argc == 1) {
|
|
use_stdin ();
|
|
} else {
|
|
for (i = 1; i < argc; i++) {
|
|
r_str_unescape (argv[i]);
|
|
rax (argv[i], 0, i == argc - 1);
|
|
}
|
|
}
|
|
r_num_free (num);
|
|
num = NULL;
|
|
return 0;
|
|
}
|