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/**************************************************************************/
/* */
/* OCaml */
/* */
/* Xavier Leroy, projet Cristal, INRIA Rocquencourt */
/* */
/* Copyright 1998 Institut National de Recherche en Informatique et */
/* en Automatique. */
/* */
/* All rights reserved. This file is distributed under the terms of */
/* the GNU Lesser General Public License version 2.1, with the */
/* special exception on linking described in the file LICENSE. */
/* */
/**************************************************************************/
#define STRICT
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#include "caml/mlvalues.h"
#include "caml/exec.h"
#ifndef __MINGW32__
#pragma comment(linker , "/entry:headerentry")
#pragma comment(linker , "/subsystem:console")
#pragma comment(lib , "kernel32")
#ifdef _UCRT
#pragma comment(lib , "ucrt.lib")
#pragma comment(lib , "vcruntime.lib")
#endif
#endif
char * default_runtime_name = RUNTIME_NAME;
static
#if _MSC_VER >= 1200
__forceinline
#else
__inline
#endif
unsigned long read_size(const char * const ptr)
{
const unsigned char * const p = (const unsigned char * const) ptr;
return ((unsigned long) p[0] << 24) | ((unsigned long) p[1] << 16) |
((unsigned long) p[2] << 8) | p[3];
}
static __inline char * read_runtime_path(HANDLE h)
{
char buffer[TRAILER_SIZE];
static char runtime_path[MAX_PATH];
DWORD nread;
int num_sections, path_size, i;
long ofs;
if (SetFilePointer(h, -TRAILER_SIZE, NULL, FILE_END) == -1) return NULL;
if (! ReadFile(h, buffer, TRAILER_SIZE, &nread, NULL)) return NULL;
if (nread != TRAILER_SIZE) return NULL;
num_sections = read_size(buffer);
ofs = TRAILER_SIZE + num_sections * 8;
if (SetFilePointer(h, - ofs, NULL, FILE_END) == -1) return NULL;
path_size = 0;
for (i = 0; i < num_sections; i++) {
if (! ReadFile(h, buffer, 8, &nread, NULL) || nread != 8) return NULL;
if (buffer[0] == 'R' && buffer[1] == 'N' &&
buffer[2] == 'T' && buffer[3] == 'M') {
path_size = read_size(buffer + 4);
ofs += path_size;
} else if (path_size > 0)
ofs += read_size(buffer + 4);
}
if (path_size == 0) return default_runtime_name;
if (path_size >= MAX_PATH) return NULL;
if (SetFilePointer(h, -ofs, NULL, FILE_END) == -1) return NULL;
if (! ReadFile(h, runtime_path, path_size, &nread, NULL)) return NULL;
if (nread != path_size) return NULL;
runtime_path[path_size - 1] = 0;
return runtime_path;
}
static BOOL WINAPI ctrl_handler(DWORD event)
{
if (event == CTRL_C_EVENT || event == CTRL_BREAK_EVENT)
return TRUE; /* pretend we've handled them */
else
return FALSE;
}
#define msg_and_length(msg) msg , (sizeof(msg) - 1)
static __inline void __declspec(noreturn) run_runtime(char * runtime,
char * const cmdline)
{
char path[MAX_PATH];
STARTUPINFO stinfo;
PROCESS_INFORMATION procinfo;
DWORD retcode;
if (SearchPath(NULL, runtime, ".exe", MAX_PATH, path, &runtime) == 0) {
HANDLE errh;
DWORD numwritten;
errh = GetStdHandle(STD_ERROR_HANDLE);
WriteFile(errh, msg_and_length("Cannot exec "), &numwritten, NULL);
WriteFile(errh, runtime, strlen(runtime), &numwritten, NULL);
WriteFile(errh, msg_and_length("\r\n"), &numwritten, NULL);
ExitProcess(2);
#if _MSC_VER >= 1200
__assume(0); /* Not reached */
#endif
}
/* Need to ignore ctrl-C and ctrl-break, otherwise we'll die and take
the underlying OCaml program with us! */
SetConsoleCtrlHandler(ctrl_handler, TRUE);
stinfo.cb = sizeof(stinfo);
stinfo.lpReserved = NULL;
stinfo.lpDesktop = NULL;
stinfo.lpTitle = NULL;
stinfo.dwFlags = 0;
stinfo.cbReserved2 = 0;
stinfo.lpReserved2 = NULL;
if (!CreateProcess(path, cmdline, NULL, NULL, TRUE, 0, NULL, NULL,
&stinfo, &procinfo)) {
HANDLE errh;
DWORD numwritten;
errh = GetStdHandle(STD_ERROR_HANDLE);
WriteFile(errh, msg_and_length("Cannot exec "), &numwritten, NULL);
WriteFile(errh, runtime, strlen(runtime), &numwritten, NULL);
WriteFile(errh, msg_and_length("\r\n"), &numwritten, NULL);
ExitProcess(2);
#if _MSC_VER >= 1200
__assume(0); /* Not reached */
#endif
}
CloseHandle(procinfo.hThread);
WaitForSingleObject(procinfo.hProcess , INFINITE);
GetExitCodeProcess(procinfo.hProcess , &retcode);
CloseHandle(procinfo.hProcess);
ExitProcess(retcode);
#if _MSC_VER >= 1200
__assume(0); /* Not reached */
#endif
}
#ifdef __MINGW32__
int main()
#else
void __declspec(noreturn) __cdecl headerentry()
#endif
{
char truename[MAX_PATH];
char * cmdline = GetCommandLine();
char * runtime_path;
HANDLE h;
GetModuleFileName(NULL, truename, sizeof(truename));
h = CreateFile(truename, GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_WRITE,
NULL, OPEN_EXISTING, 0, NULL);
if (h == INVALID_HANDLE_VALUE ||
(runtime_path = read_runtime_path(h)) == NULL) {
HANDLE errh;
DWORD numwritten;
errh = GetStdHandle(STD_ERROR_HANDLE);
WriteFile(errh, truename, strlen(truename), &numwritten, NULL);
WriteFile(errh, msg_and_length(" not found or is not a bytecode"
" executable file\r\n"),
&numwritten, NULL);
ExitProcess(2);
#if _MSC_VER >= 1200
__assume(0); /* Not reached */
#endif
}
CloseHandle(h);
run_runtime(runtime_path , cmdline);
#if _MSC_VER >= 1200
__assume(0); /* Not reached */
#endif
#ifdef __MINGW32__
return 0;
#endif
}
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