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unity: timezone spoofing fixed, close #27

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This commit is contained in:
Dniel97 2024-08-06 11:14:27 +02:00
parent b9204d4765
commit 686d57d3ee
Signed by untrusted user: Dniel97
GPG Key ID: 6180B3C768FB2E08
3 changed files with 20 additions and 29 deletions
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45
platform/clock.c
View File

@ -20,7 +20,9 @@ static BOOL WINAPI my_SetTimeZoneInformation(TIME_ZONE_INFORMATION *tzinfo);
static BOOL (WINAPI * next_GetSystemTimeAsFileTime)(FILETIME *out);
static int64_t clock_current_day;
static bool clock_timezone;
static bool clock_time_warp;
static bool clock_writeable;
static const struct hook_symbol clock_base_hook_syms[] = {
{
@ -226,56 +228,41 @@ HRESULT clock_hook_init(const struct clock_config *cfg)
{
assert(cfg != NULL);
clock_timezone = cfg->timezone;
clock_time_warp = cfg->timewarp;
clock_writeable = cfg->writeable;
if (cfg->timezone || cfg->timewarp || !cfg->writeable) {
clock_hook_insert_hooks(NULL);
return S_OK;
}
void clock_hook_insert_hooks(HMODULE target) {
if (clock_timezone || clock_time_warp || !clock_writeable) {
/* All the clock hooks require the core GSTAFT hook to be installed */
/* Note the ! up there btw. */
hook_table_apply(
NULL,
target,
"kernel32.dll",
clock_base_hook_syms,
_countof(clock_base_hook_syms));
proc_addr_table_push(
NULL,
"kernel32.dll",
clock_base_hook_syms,
_countof(clock_base_hook_syms)
);
}
if (cfg->timezone) {
if (clock_timezone) {
hook_table_apply(
NULL,
target,
"kernel32.dll",
clock_read_hook_syms,
_countof(clock_read_hook_syms));
proc_addr_table_push(
NULL,
"kernel32.dll",
clock_read_hook_syms,
_countof(clock_read_hook_syms)
);
}
if (!cfg->writeable) {
if (!clock_writeable) {
/* Install hook if this config parameter is FALSE! */
hook_table_apply(
NULL,
target,
"kernel32.dll",
clock_write_hook_syms,
_countof(clock_write_hook_syms));
proc_addr_table_push(
NULL,
"kernel32.dll",
clock_write_hook_syms,
_countof(clock_write_hook_syms)
);
}
return S_OK;
}

1
platform/clock.h
View File

@ -11,3 +11,4 @@ struct clock_config {
};
HRESULT clock_hook_init(const struct clock_config *cfg);
void clock_hook_insert_hooks(HMODULE target);

3
unityhook/hook.c
View File

@ -1,6 +1,8 @@
#include <assert.h>
#include <stdbool.h>
#include "platform/clock.h"
#include "hook/table.h"
#include "hook/procaddr.h"
#include "hook/iohook.h"
@ -140,6 +142,7 @@ static HMODULE WINAPI hook_LoadLibraryW(const wchar_t *name)
path_hook_insert_hooks(result);
reg_hook_insert_hooks(result);
clock_hook_insert_hooks(result);
proc_addr_insert_hooks(result);
// Not needed?