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Decompile fn_24371 (ReplaceClientExecutable)

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Batch #8061 by Yommy: 0 byte-identical, 1 confirmed by peer review.

- fn_24371 ReplaceClientExecutable: logic confirmed by peer review

Peer-reviewed-by: eAthena, secret
Accepted without human review: peers confirmed the logic ("same" ahead by at least 3, with 70% of the votes).
This commit is contained in:
ragnarok-clanker 2026-10-31 13:52:51 +00:00
commit af01a4fcd4
2 changed files with 43 additions and 1 deletions
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42
Source/Client/Application/Launcher.cpp
View file

@ -10,6 +10,7 @@
#include <string>
#include <windows.h>
#include <shellapi.h>
#include <sys/stat.h>
// STATIC: 0x0173ad64
// GLOBAL: gl_24472
@ -760,3 +761,44 @@ HANDLE StartClientProcess(char* program) {
CreateProcessA(nullptr, commandLine, nullptr, nullptr, FALSE, 0, nullptr, nullptr, &startup, &process);
return process.hProcess;
}
// OFFSET: 0x00E5C100
// FUNCTION: fn_24371
bool ReplaceClientExecutable(char* executable, const char* update) {
ApplyAiPatch();
if (_access(update, 0) != 0) {
return false;
}
const char* format;
if (g_serviceType == 12) {
const std::uint8_t messageSource[] = {0xBA, 0xB0, 0x67, 0xDB, 0x84, 0x2E, 0xC1, 0xFC, 0xF0, 0xA7, 0x2E, 0xDB, 0x82, 0x24, 0x80, 0xF5,
0xFE, 0xED, 0x67, 0xFE, 0x87, 0x2E, 0x90, 0xE4, 0xFA, 0xE3, 0x22, 0xD0, 0xCB, 0x08, 0x8A, 0xB1,
0xEF, 0xA2, 0x35, 0xDC, 0xCB, 0x24, 0x8E, 0xFF, 0xEB, 0xAA, 0x29, 0xC8, 0x8A, 0x35, 0xCF, 0x91};
thread_local EncryptedName<sizeof(messageSource), 0x91E147EBBD47C39FULL> message(messageSource);
format = message.Text();
} else {
const std::uint8_t messageSource[] = {0x24, 0x24, 0xB7, 0xB6, 0x60, 0xA5, 0x30, 0xB9, 0x60, 0x39, 0xF0, 0xBA, 0x77, 0xAB, 0x73, 0x81, 0x73, 0x32,
0xE4, 0xAC, 0x33, 0xEA, 0x38, 0xF1, 0x75, 0x38, 0xB7, 0xAD, 0x76, 0xF6, 0x27, 0xB0, 0x73, 0x23, 0x97};
thread_local EncryptedName<sizeof(messageSource), 0xD1538513DF975701ULL> message(messageSource);
format = message.Text();
}
char text[256];
std::sprintf(text, format, executable);
const std::uint8_t titleSource[] = {0x0C, 0x49, 0xFC, 0x3B, 0x27, 0x43};
thread_local EncryptedName<sizeof(titleSource), 0x078143534999254DULL> title(titleSource);
if (MessageBoxA(nullptr, text, title.Text(), MB_OKCANCEL | MB_ICONINFORMATION) != IDOK) {
return false;
}
_chmod(executable, _S_IWRITE);
_unlink(executable);
if (std::rename(update, executable) != 0) {
return false;
}
StartClientProcess(executable);
return true;
}

2
Source/Client/Application/Launcher.h
View file

@ -19,6 +19,6 @@ extern char g_launchAccountPassword[24];
extern char g_launchAccountSex;
extern bool g_launchPassCommandLine;
HANDLE StartClientProcess(char* program);
__declspec(noinline) HANDLE StartClientProcess(char* program);
#endif