/* WIN32.C
*
* (c) 1995 Microsoft Corporation. All rights reserved.
* Developed by hip communications inc.
* Portions (c) 1993 Intergraph Corporation. All rights reserved.
*
* You may distribute under the terms of either the GNU General Public
* License or the Artistic License, as specified in the README file.
*/
#define PERLIO_NOT_STDIO 0
#define WIN32_LEAN_AND_MEAN
#define WIN32IO_IS_STDIO
/* for CreateSymbolicLinkA() etc */
#define _WIN32_WINNT 0x0601
#include <tchar.h>
#ifdef __GNUC__
# define Win32_Winsock
#endif
#include <windows.h>
#ifndef HWND_MESSAGE
# define HWND_MESSAGE ((HWND)-3)
#endif
#ifndef PROCESSOR_ARCHITECTURE_AMD64
# define PROCESSOR_ARCHITECTURE_AMD64 9
#endif
#ifndef WC_NO_BEST_FIT_CHARS
# define WC_NO_BEST_FIT_CHARS 0x00000400
#endif
#include <winnt.h>
#include <commctrl.h>
#include <tlhelp32.h>
#include <io.h>
#include <signal.h>
#include <winioctl.h>
#include <winternl.h>
/* #include "config.h" */
#define PerlIO FILE
#include <sys/stat.h>
#include "EXTERN.h"
#include "perl.h"
#define NO_XSLOCKS
#define PERL_NO_GET_CONTEXT
#include "XSUB.h"
#include <fcntl.h>
#ifndef __GNUC__
/* assert.h conflicts with #define of assert in perl.h */
# include <assert.h>
#endif
#include <string.h>
#include <stdarg.h>
#include <float.h>
#include <time.h>
#include <sys/utime.h>
#include <wchar.h>
#ifdef __GNUC__
/* Mingw32 defaults to globing command line
* So we turn it off like this:
*/
int _CRT_glob = 0;
#endif
#if defined(__MINGW32__) && (__MINGW32_MAJOR_VERSION==1)
/* Mingw32-1.1 is missing some prototypes */
START_EXTERN_C
FILE * _wfopen(LPCWSTR wszFileName, LPCWSTR wszMode);
FILE * _wfdopen(int nFd, LPCWSTR wszMode);
FILE * _freopen(LPCWSTR wszFileName, LPCWSTR wszMode, FILE * pOldStream);
int _flushall();
int _fcloseall();
END_EXTERN_C
#endif
#define EXECF_EXEC 1
#define EXECF_SPAWN 2
#define EXECF_SPAWN_NOWAIT 3
#if defined(PERL_IMPLICIT_SYS)
# undef getlogin
# define getlogin g_getlogin
#endif
#ifdef _MSC_VER
# define SET_INVALID_PARAMETER_HANDLER
#endif
#ifdef SET_INVALID_PARAMETER_HANDLER
static BOOL set_silent_invalid_parameter_handler(BOOL newvalue);
static void my_invalid_parameter_handler(const wchar_t* expression,
const wchar_t* function, const wchar_t* file,
unsigned int line, uintptr_t pReserved);
#endif
#ifndef WIN32_NO_REGISTRY
static char* get_regstr_from(HKEY hkey, const char *valuename, SV **svp);
static char* get_regstr(const char *valuename, SV **svp);
#endif
static char* get_emd_part(SV **prev_pathp, STRLEN *const len,
const char *trailing, ...);
static char* win32_get_xlib(const char *pl,
WIN32_NO_REGISTRY_M_(const char *xlib)
const char *libname, STRLEN *const len);
static BOOL has_shell_metachars(const char *ptr);
static long tokenize(const char *str, char **dest, char ***destv);
static int get_shell(void);
static char* find_next_space(const char *s);
static int do_spawn2(pTHX_ const char *cmd, int exectype);
static int do_spawn2_handles(pTHX_ const char *cmd, int exectype,
const int *handles);
static int do_spawnvp_handles(int mode, const char *cmdname,
const char * const *argv, const int *handles);
static PerlIO * do_popen(const char *mode, const char *command, IV narg,
SV **args);
static long find_pid(pTHX_ int pid);
static void remove_dead_process(long child);
static int terminate_process(DWORD pid, HANDLE process_handle, int sig);
static int my_killpg(int pid, int sig);
static int my_kill(int pid, int sig);
static void out_of_memory(const char *context, STRLEN len);
#ifdef _DEBUG
static char* wstr_to_str(const wchar_t* wstr);
#endif
static long filetime_to_clock(PFILETIME ft);
static BOOL filetime_from_time(PFILETIME ft, time_t t);
static char* create_command_line(char *cname, STRLEN clen,
const char * const *args);
static char* qualified_path(const char *cmd, bool other_exts);
static void ansify_path(void);
static LRESULT win32_process_message(HWND hwnd, UINT msg,
WPARAM wParam, LPARAM lParam);
#ifdef USE_ITHREADS
static long find_pseudo_pid(pTHX_ int pid);
static void remove_dead_pseudo_process(long child);
static HWND get_hwnd_delay(pTHX, long child, DWORD tries);
#endif
#ifdef HAVE_INTERP_INTERN
static void win32_csighandler(int sig);
#endif
static void translate_to_errno(void);
START_EXTERN_C
HANDLE w32_perldll_handle = INVALID_HANDLE_VALUE;
char w32_module_name[MAX_PATH+1];
END_EXTERN_C
static OSVERSIONINFO g_osver = {0, 0, 0, 0, 0, ""};
#ifndef WIN32_NO_REGISTRY
/* initialized by Perl_win32_init/PERL_SYS_INIT */
static HKEY HKCU_Perl_hnd;
static HKEY HKLM_Perl_hnd;
#endif
/* the time_t epoch start time as a filetime expressed as a large integer */
static ULARGE_INTEGER time_t_epoch_base_filetime;
static const SYSTEMTIME time_t_epoch_base_systemtime = {
1970, /* wYear */
1, /* wMonth */
0, /* wDayOfWeek */
1, /* wDay */
0, /* wHour */
0, /* wMinute */
0, /* wSecond */
0 /* wMilliseconds */
};
#define FILETIME_CHUNKS_PER_SECOND (10000000UL)
#ifdef USE_ITHREADS
static perl_mutex win32_read_console_mutex;
#endif
#ifdef SET_INVALID_PARAMETER_HANDLER
static BOOL silent_invalid_parameter_handler = FALSE;
static BOOL
set_silent_invalid_parameter_handler(BOOL newvalue)
{
BOOL oldvalue = silent_invalid_parameter_handler;
# ifdef _DEBUG
silent_invalid_parameter_handler = newvalue;
# endif
return oldvalue;
}
static void
my_invalid_parameter_handler(const wchar_t* expression,
const wchar_t* function,
const wchar_t* file,
unsigned int line,
uintptr_t pReserved)
{
# ifdef _DEBUG
char* ansi_expression;
char* ansi_function;
char* ansi_file;
if (silent_invalid_parameter_handler)
return;
ansi_expression = wstr_to_str(expression);
ansi_function = wstr_to_str(function);
ansi_file = wstr_to_str(file);
fprintf(stderr, "Invalid parameter detected in function %s. "
"File: %s, line: %d\n", ansi_function, ansi_file, line);
fprintf(stderr, "Expression: %s\n", ansi_expression);
free(ansi_expression);
free(ansi_function);
free(ansi_file);
# endif
}
#endif
EXTERN_C void
set_w32_module_name(void)
{
/* this function may be called at DLL_PROCESS_ATTACH time */
char* ptr;
HMODULE module = (HMODULE)((w32_perldll_handle == INVALID_HANDLE_VALUE)
? GetModuleHandle(NULL)
: w32_perldll_handle);
WCHAR modulename[MAX_PATH];
WCHAR fullname[MAX_PATH];
char *ansi;
DWORD (__stdcall *pfnGetLongPathNameW)(LPCWSTR, LPWSTR, DWORD) =
(DWORD (__stdcall *)(LPCWSTR, LPWSTR, DWORD))
GetProcAddress(GetModuleHandle("kernel32.dll"), "GetLongPathNameW");
GetModuleFileNameW(module, modulename, sizeof(modulename)/sizeof(WCHAR));
/* Make sure we get an absolute pathname in case the module was loaded
* explicitly by LoadLibrary() with a relative path. */
GetFullPathNameW(modulename, sizeof(fullname)/sizeof(WCHAR), fullname, NULL);
/* Make sure we start with the long path name of the module because we
* later scan for pathname components to match "5.xx" to locate
* compatible sitelib directories, and the short pathname might mangle
* this path segment (e.g. by removing the dot on NTFS to something
* like "5xx~1.yy") */
if (pfnGetLongPathNameW)
pfnGetLongPathNameW(fullname, fullname, sizeof(fullname)/sizeof(WCHAR));
/* remove \\?\ prefix */
if (memcmp(fullname, L"\\\\?\\", 4*sizeof(WCHAR)) == 0)
memmove(fullname, fullname+4, (wcslen(fullname+4)+1)*sizeof(WCHAR));
ansi = win32_ansipath(fullname);
my_strlcpy(w32_module_name, ansi, sizeof(w32_module_name));
win32_free(ansi);
/* normalize to forward slashes */
ptr = w32_module_name;
while (*ptr) {
if (*ptr == '\\')
*ptr = '/';
++ptr;
}
}
#ifndef WIN32_NO_REGISTRY
/* *svp (if non-NULL) is expected to be POK (valid allocated SvPVX(*svp)) */
static char*
get_regstr_from(HKEY handle, const char *valuename, SV **svp)
{
/* Retrieve a REG_SZ or REG_EXPAND_SZ from the registry */
DWORD type;
char *str = NULL;
long retval;
DWORD datalen;
retval = RegQueryValueEx(handle, valuename, 0, &type, NULL, &datalen);
if (retval == ERROR_SUCCESS
&& (type == REG_SZ || type == REG_EXPAND_SZ))
{
dTHX;
if (!*svp)
*svp = sv_2mortal(newSVpvs(""));
SvGROW(*svp, datalen);
retval = RegQueryValueEx(handle, valuename, 0, NULL,
(PBYTE)SvPVX(*svp), &datalen);
if (retval == ERROR_SUCCESS) {
str = SvPVX(*svp);
SvCUR_set(*svp,datalen-1);
}
}
return str;
}
/* *svp (if non-NULL) is expected to be POK (valid allocated SvPVX(*svp)) */
static char*
get_regstr(const char *valuename, SV **svp)
{
char *str;
if (HKCU_Perl_hnd) {
str = get_regstr_from(HKCU_Perl_hnd, valuename, svp);
if (!str)
goto try_HKLM;
}
else {
try_HKLM:
if (HKLM_Perl_hnd)
str = get_regstr_from(HKLM_Perl_hnd, valuename, svp);
else
str = NULL;
}
return str;
}
#endif /* ifndef WIN32_NO_REGISTRY */
/* *prev_pathp (if non-NULL) is expected to be POK (valid allocated SvPVX(sv)) */
static char *
get_emd_part(SV **prev_pathp, STRLEN *const len, const char *trailing_path, ...)
{
char base[10];
va_list ap;
char mod_name[MAX_PATH+1];
char *ptr;
char *optr;
char *strip;
STRLEN baselen;
va_start(ap, trailing_path);
strip = va_arg(ap, char *);
sprintf(base, "%d.%d", (int)PERL_REVISION, (int)PERL_VERSION);
baselen = strlen(base);
if (!*w32_module_name) {
set_w32_module_name();
}
strcpy(mod_name, w32_module_name);
ptr = strrchr(mod_name, '/');
while (ptr && strip) {
/* look for directories to skip back */
optr = ptr;
*ptr = '\0';
ptr = strrchr(mod_name, '/');
/* avoid stripping component if there is no slash,
* or it doesn't match ... */
if (!ptr || stricmp(ptr+1, strip) != 0) {
/* ... but not if component matches m|5\.$patchlevel.*| */
if (!ptr || !(*strip == '5' && *(ptr+1) == '5'
&& strnEQ(strip, base, baselen)
&& strnEQ(ptr+1, base, baselen)))
{
*optr = '/';
ptr = optr;
}
}
strip = va_arg(ap, char *);
}
if (!ptr) {
ptr = mod_name;
*ptr++ = '.';
*ptr = '/';
}
va_end(ap);
strcpy(++ptr, trailing_path);
/* only add directory if it exists */
if (GetFileAttributes(mod_name) != (DWORD) -1) {
/* directory exists */
dTHX;
if (!*prev_pathp)
*prev_pathp = sv_2mortal(newSVpvs(""));
else if (SvPVX(*prev_pathp))
sv_catpvs(*prev_pathp, ";");
sv_catpv(*prev_pathp, mod_name);
if(len)
*len = SvCUR(*prev_pathp);
return SvPVX(*prev_pathp);
}
return NULL;
}
EXTERN_C char *
win32_get_privlib(WIN32_NO_REGISTRY_M_(const char *pl) STRLEN *const len)
{
const char *stdlib = "lib";
SV *sv = NULL;
#ifndef WIN32_NO_REGISTRY
char buffer[MAX_PATH+1];
/* $stdlib = $HKCU{"lib-$]"} || $HKLM{"lib-$]"} || $HKCU{"lib"} || $HKLM{"lib"} || ""; */
sprintf(buffer, "%s-%s", stdlib, pl);
if (!get_regstr(buffer, &sv))
(void)get_regstr(stdlib, &sv);
#endif
/* $stdlib .= ";$EMD/../../lib" */
return get_emd_part(&sv, len, stdlib, ARCHNAME, "bin", NULL);
}
static char *
win32_get_xlib(const char *pl, WIN32_NO_REGISTRY_M_(const char *xlib)
const char *libname, STRLEN *const len)
{
#ifndef WIN32_NO_REGISTRY
char regstr[40];
#endif
char pathstr[MAX_PATH+1];
SV *sv1 = NULL;
SV *sv2 = NULL;
#ifndef WIN32_NO_REGISTRY
/* $HKCU{"$xlib-$]"} || $HKLM{"$xlib-$]"} . ---; */
sprintf(regstr, "%s-%s", xlib, pl);
(void)get_regstr(regstr, &sv1);
#endif
/* $xlib .=
* ";$EMD/" . ((-d $EMD/../../../$]) ? "../../.." : "../.."). "/$libname/$]/lib"; */
sprintf(pathstr, "%s/%s/lib", libname, pl);
(void)get_emd_part(&sv1, NULL, pathstr, ARCHNAME, "bin", pl, NULL);
#ifndef WIN32_NO_REGISTRY
/* $HKCU{$xlib} || $HKLM{$xlib} . ---; */
(void)get_regstr(xlib, &sv2);
#endif
/* $xlib .=
* ";$EMD/" . ((-d $EMD/../../../$]) ? "../../.." : "../.."). "/$libname/lib"; */
sprintf(pathstr, "%s/lib", libname);
(void)get_emd_part(&sv2, NULL, pathstr, ARCHNAME, "bin", pl, NULL);
if (!sv1 && !sv2)
return NULL;
if (!sv1) {
sv1 = sv2;
} else if (sv2) {
dTHX;
sv_catpvs(sv1, ";");
sv_catsv(sv1, sv2);
}
if (len)
*len = SvCUR(sv1);
return SvPVX(sv1);
}
EXTERN_C char *
win32_get_sitelib(const char *pl, STRLEN *const len)
{
return win32_get_xlib(pl, WIN32_NO_REGISTRY_M_("sitelib") "site", len);
}
#ifndef PERL_VENDORLIB_NAME
# define PERL_VENDORLIB_NAME "vendor"
#endif
EXTERN_C char *
win32_get_vendorlib(const char *pl, STRLEN *const len)
{
return win32_get_xlib(pl, WIN32_NO_REGISTRY_M_("vendorlib") PERL_VENDORLIB_NAME, len);
}
static BOOL
has_shell_metachars(const char *ptr)
{
int inquote = 0;
char quote = '\0';
/*
* Scan string looking for redirection (< or >) or pipe
* characters (|) that are not in a quoted string.
* Shell variable interpolation (%VAR%) can also happen inside strings.
*/
while (*ptr) {
switch(*ptr) {
case '%':
return TRUE;
case '\'':
case '\"':
if (inquote) {
if (quote == *ptr) {
inquote = 0;
quote = '\0';
}
}
else {
quote = *ptr;
inquote++;
}
break;
case '>':
case '<':
case '|':
if (!inquote)
return TRUE;
default:
break;
}
++ptr;
}
return FALSE;
}
#if !defined(PERL_IMPLICIT_SYS)
/* since the current process environment is being updated in util.c
* the library functions will get the correct environment
*/
PerlIO *
Perl_my_popen(pTHX_ const char *cmd, const char *mode)
{
PERL_FLUSHALL_FOR_CHILD;
return win32_popen(cmd, mode);
}
long
Perl_my_pclose(pTHX_ PerlIO *fp)
{
return win32_pclose(fp);
}
#endif
DllExport unsigned long
win32_os_id(void)
{
return (unsigned long)g_osver.dwPlatformId;
}
DllExport int
win32_getpid(void)
{
#ifdef USE_ITHREADS
dTHX;
if (w32_pseudo_id)
return -((int)w32_pseudo_id);
#endif
return _getpid();
}
/* Tokenize a string. Words are null-separated, and the list
* ends with a doubled null. Any character (except null and
* including backslash) may be escaped by preceding it with a
* backslash (the backslash will be stripped).
* Returns number of words in result buffer.
*/
static long
tokenize(const char *str, char **dest, char ***destv)
{
char *retstart = NULL;
char **retvstart = 0;
int items = -1;
if (str) {
int slen = strlen(str);
char *ret;
char **retv;
Newx(ret, slen+2, char);
Newx(retv, (slen+3)/2, char*);
retstart = ret;
retvstart = retv;
*retv = ret;
items = 0;
while (*str) {
*ret = *str++;
if (*ret == '\\' && *str)
*ret = *str++;
else if (*ret == ' ') {
while (*str == ' ')
str++;
if (ret == retstart)
ret--;
else {
*ret = '\0';
++items;
if (*str)
*++retv = ret+1;
}
}
else if (!*str)
++items;
ret++;
}
retvstart[items] = NULL;
*ret++ = '\0';
*ret = '\0';
}
*dest = retstart;
*destv = retvstart;
return items;
}
static const char
cmd_opts[] = "/x/d/c";
static const char
shell_cmd[] = "cmd.exe";
static int
get_shell(void)
{
dTHX;
if (!w32_perlshell_tokens) {
/* we don't use COMSPEC here for two reasons:
* 1. the same reason perl on UNIX doesn't use SHELL--rampant and
* uncontrolled unportability of the ensuing scripts.
* 2. PERL5SHELL could be set to a shell that may not be fit for
* interactive use (which is what most programs look in COMSPEC
* for).
*/
const char *shell = PerlEnv_getenv("PERL5SHELL");
if (shell) {
w32_perlshell_items = tokenize(shell,
&w32_perlshell_tokens,
&w32_perlshell_vec);
}
else {
/* tokenize does some Unix-ish like things like
\\ escaping that don't work well here
*/
char shellbuf[MAX_PATH];
UINT len = GetSystemDirectoryA(shellbuf, sizeof(shellbuf));
if (len == 0) {
translate_to_errno();
return -1;
}
else if (len >= MAX_PATH) {
/* buffer too small */
errno = E2BIG;
return -1;
}
if (shellbuf[len-1] != '\\') {
my_strlcat(shellbuf, "\\", sizeof(shellbuf));
++len;
}
if (len + sizeof(shell_cmd) > sizeof(shellbuf)) {
errno = E2BIG;
return -1;
}
my_strlcat(shellbuf, shell_cmd, sizeof(shellbuf));
len += sizeof(shell_cmd)-1;
Newx(w32_perlshell_vec, 3, char *);
Newx(w32_perlshell_tokens, len + 1 + sizeof(cmd_opts), char);
my_strlcpy(w32_perlshell_tokens, shellbuf, len+1);
my_strlcpy(w32_perlshell_tokens + len +1, cmd_opts,
sizeof(cmd_opts));
w32_perlshell_vec[0] = w32_perlshell_tokens;
w32_perlshell_vec[1] = w32_perlshell_tokens + len + 1;
w32_perlshell_vec[2] = NULL;
w32_perlshell_items = 2;
}
}
return 0;
}
int
Perl_do_aspawn(pTHX_ SV *really, SV **mark, SV **sp)
{
const char **argv;
char *str;
int status;
int flag = P_WAIT;
int index = 0;
int eno;
PERL_ARGS_ASSERT_DO_ASPAWN;
if (sp <= mark)
return -1;
if (get_shell() < 0)
return -1;
Newx(argv, (sp - mark) + w32_perlshell_items + 2, const char*);
if (SvNIOKp(*(mark+1)) && !SvPOKp(*(mark+1))) {
++mark;
flag = SvIVx(*mark);
}
while (++mark <= sp) {
if (*mark && (str = SvPV_nolen(*mark)))
argv[index++] = str;
else
argv[index++] = "";
}
argv[index++] = 0;
status = win32_spawnvp(flag,
(const char*)(really ? SvPV_nolen(really) : argv[0]),
(const char* const*)argv);
if (status < 0 && (eno = errno, (eno == ENOEXEC || eno == ENOENT))) {
/* possible shell-builtin, invoke with shell */
int sh_items;
sh_items = w32_perlshell_items;
while (--index >= 0)
argv[index+sh_items] = argv[index];
while (--sh_items >= 0)
argv[sh_items] = w32_perlshell_vec[sh_items];
status = win32_spawnvp(flag,
(const char*)(really ? SvPV_nolen(really) : argv[0]),
(const char* const*)argv);
}
if (flag == P_NOWAIT) {
PL_statusvalue = -1; /* >16bits hint for pp_system() */
}
else {
if (status < 0) {
ck_warner(packWARN(WARN_EXEC), "Can't spawn \"%s\": %s", argv[0], strerror(errno));
status = 255 * 256;
}
else
status *= 256;
PL_statusvalue = status;
}
Safefree(argv);
return (status);
}
/* returns pointer to the next unquoted space or the end of the string */
static char*
find_next_space(const char *s)
{
bool in_quotes = FALSE;
while (*s) {
/* ignore doubled backslashes, or backslash+quote */
if (*s == '\\' && (s[1] == '\\' || s[1] == '"')) {
s += 2;
}
/* keep track of when we're within quotes */
else if (*s == '"') {
s++;
in_quotes = !in_quotes;
}
/* break it up only at spaces that aren't in quotes */
else if (!in_quotes && isSPACE(*s))
return (char*)s;
else
s++;
}
return (char*)s;
}
static int
do_spawn2(pTHX_ const char *cmd, int exectype) {
return do_spawn2_handles(aTHX_ cmd, exectype, NULL);
}
static int
do_spawn2_handles(pTHX_ const char *cmd, int exectype, const int *handles)
{
char **a;
char *s;
char **argv;
int status = -1;
BOOL needToTry = TRUE;
char *cmd2;
/* Save an extra exec if possible. See if there are shell
* metacharacters in it */
if (!has_shell_metachars(cmd)) {
Newx(argv, strlen(cmd) / 2 + 2, char*);
Newx(cmd2, strlen(cmd) + 1, char);
strcpy(cmd2, cmd);
a = argv;
for (s = cmd2; *s;) {
while (*s && isSPACE(*s))
s++;
if (*s)
*(a++) = s;
s = find_next_space(s);
if (*s)
*s++ = '\0';
}
*a = NULL;
if (argv[0]) {
switch (exectype) {
case EXECF_SPAWN:
status = win32_spawnvp(P_WAIT, argv[0],
(const char* const*)argv);
break;
case EXECF_SPAWN_NOWAIT:
status = do_spawnvp_handles(P_NOWAIT, argv[0],
(const char* const*)argv, handles);
break;
case EXECF_EXEC:
status = win32_execvp(argv[0], (const char* const*)argv);
break;
}
if (status != -1 || errno == 0)
needToTry = FALSE;
}
Safefree(argv);
Safefree(cmd2);
}
if (needToTry) {
char **argv;
int i = -1;
if (get_shell() < 0)
return -1;
Newx(argv, w32_perlshell_items + 2, char*);
while (++i < w32_perlshell_items)
argv[i] = w32_perlshell_vec[i];
argv[i++] = (char *)cmd;
argv[i] = NULL;
switch (exectype) {
case EXECF_SPAWN:
status = win32_spawnvp(P_WAIT, argv[0],
(const char* const*)argv);
break;
case EXECF_SPAWN_NOWAIT:
status = do_spawnvp_handles(P_NOWAIT, argv[0],
(const char* const*)argv, handles);
break;
case EXECF_EXEC:
status = win32_execvp(argv[0], (const char* const*)argv);
break;
}
cmd = argv[0];
Safefree(argv);
}
if (exectype == EXECF_SPAWN_NOWAIT) {
PL_statusvalue = -1; /* >16bits hint for pp_system() */
}
else {
if (status < 0) {
ck_warner(packWARN(WARN_EXEC), "Can't %s \"%s\": %s",
(exectype == EXECF_EXEC ? "exec" : "spawn"),
cmd, strerror(errno));
status = 255 * 256;
}
else
status *= 256;
PL_statusvalue = status;
}
return (status);
}
int
Perl_do_spawn(pTHX_ char *cmd)
{
PERL_ARGS_ASSERT_DO_SPAWN;
return do_spawn2(aTHX_ cmd, EXECF_SPAWN);
}
int
Perl_do_spawn_nowait(pTHX_ char *cmd)
{
PERL_ARGS_ASSERT_DO_SPAWN_NOWAIT;
return do_spawn2(aTHX_ cmd, EXECF_SPAWN_NOWAIT);
}
bool
Perl_do_exec(pTHX_ const char *cmd)
{
PERL_ARGS_ASSERT_DO_EXEC;
do_spawn2(aTHX_ cmd, EXECF_EXEC);
return FALSE;
}
/* The idea here is to read all the directory names into a string table
* (separated by nulls) and when one of the other dir functions is called
* return the pointer to the current file name.
*/
DllExport DIR *
win32_opendir(const char *filename)
{
dTHXa(NULL);
DIR *dirp;
long len;
long idx;
char scanname[MAX_PATH+3];
WCHAR wscanname[sizeof(scanname)];
WIN32_FIND_DATAW wFindData;
char buffer[MAX_PATH*2];
BOOL use_default;
len = strlen(filename);
if (len == 0) {
errno = ENOENT;
return NULL;
}
if (len > MAX_PATH) {
errno = ENAMETOOLONG;
return NULL;
}
/* Get us a DIR structure */
Newxz(dirp, 1, DIR);
/* Create the search pattern */
strcpy(scanname, filename);
/* bare drive name means look in cwd for drive */
if (len == 2 && isALPHA(scanname[0]) && scanname[1] == ':') {
scanname[len++] = '.';
scanname[len++] = '/';
}
else if (scanname[len-1] != '/' && scanname[len-1] != '\\') {
scanname[len++] = '/';
}
scanname[len++] = '*';
scanname[len] = '\0';
/* do the FindFirstFile call */
MultiByteToWideChar(CP_ACP, 0, scanname, -1, wscanname, sizeof(wscanname)/sizeof(WCHAR));
aTHXa(PERL_GET_THX);
dirp->handle = FindFirstFileW(PerlDir_mapW(wscanname), &wFindData);
if (dirp->handle == INVALID_HANDLE_VALUE) {
DWORD err = GetLastError();
/* FindFirstFile() fails on empty drives! */
switch (err) {
case ERROR_FILE_NOT_FOUND:
return dirp;
case ERROR_NO_MORE_FILES:
case ERROR_PATH_NOT_FOUND:
errno = ENOENT;
break;
case ERROR_NOT_ENOUGH_MEMORY:
errno = ENOMEM;
break;
default:
errno = EINVAL;
break;
}
Safefree(dirp);
return NULL;
}
use_default = FALSE;
WideCharToMultiByte(CP_ACP, WC_NO_BEST_FIT_CHARS,
wFindData.cFileName, -1,
buffer, sizeof(buffer), NULL, &use_default);
if (use_default && *wFindData.cAlternateFileName) {
WideCharToMultiByte(CP_ACP, WC_NO_BEST_FIT_CHARS,
wFindData.cAlternateFileName, -1,
buffer, sizeof(buffer), NULL, NULL);
}
/* now allocate the first part of the string table for
* the filenames that we find.
*/
idx = strlen(buffer)+1;
if (idx < 256)
dirp->size = 256;
else
dirp->size = idx;
Newx(dirp->start, dirp->size, char);
strcpy(dirp->start, buffer);
dirp->nfiles++;
dirp->end = dirp->curr = dirp->start;
dirp->end += idx;
return dirp;
}
/* Readdir just returns the current string pointer and bumps the
* string pointer to the nDllExport entry.
*/
DllExport struct direct *
win32_readdir(DIR *dirp)
{
long len;
if (dirp->curr) {
/* first set up the structure to return */
len = strlen(dirp->curr);
strcpy(dirp->dirstr.d_name, dirp->curr);
dirp->dirstr.d_namlen = len;
/* Fake an inode */
dirp->dirstr.d_ino = dirp->curr - dirp->start;
/* Now set up for the next call to readdir */
dirp->curr += len + 1;
if (dirp->curr >= dirp->end) {
BOOL res;
char buffer[MAX_PATH*2];
if (dirp->handle == INVALID_HANDLE_VALUE) {
res = 0;
}
/* finding the next file that matches the wildcard
* (which should be all of them in this directory!).
*/
else {
WIN32_FIND_DATAW wFindData;
res = FindNextFileW(dirp->handle, &wFindData);
if (res) {
BOOL use_default = FALSE;
WideCharToMultiByte(CP_ACP, WC_NO_BEST_FIT_CHARS,
wFindData.cFileName, -1,
buffer, sizeof(buffer), NULL, &use_default);
if (use_default && *wFindData.cAlternateFileName) {
WideCharToMultiByte(CP_ACP, WC_NO_BEST_FIT_CHARS,
wFindData.cAlternateFileName, -1,
buffer, sizeof(buffer), NULL, NULL);
}
}
}
if (res) {
long endpos = dirp->end - dirp->start;
long newsize = endpos + strlen(buffer) + 1;
/* bump the string table size by enough for the
* new name and its null terminator */
while (newsize > dirp->size) {
long curpos = dirp->curr - dirp->start;
Renew(dirp->start, dirp->size * 2, char);
dirp->size *= 2;
dirp->curr = dirp->start + curpos;
}
strcpy(dirp->start + endpos, buffer);
dirp->end = dirp->start + newsize;
dirp->nfiles++;
}
else {
dirp->curr = NULL;
if (dirp->handle != INVALID_HANDLE_VALUE) {
FindClose(dirp->handle);
dirp->handle = INVALID_HANDLE_VALUE;
}
}
}
return &(dirp->dirstr);
}
else
return NULL;
}
/* Telldir returns the current string pointer position */
DllExport long
win32_telldir(DIR *dirp)
{
return dirp->curr ? (dirp->curr - dirp->start) : -1;
}
/* Seekdir moves the string pointer to a previously saved position
* (returned by telldir).
*/
DllExport void
win32_seekdir(DIR *dirp, long loc)
{
/* Ensure dirp->curr remains within `dirp->start` buffer. */
if (loc >= 0 && dirp->end - dirp->start > (ptrdiff_t) loc) {
dirp->curr = dirp->start + loc;
} else {
dirp->curr = NULL;
}
}
/* Rewinddir resets the string pointer to the start */
DllExport void
win32_rewinddir(DIR *dirp)
{
dirp->curr = dirp->start;
}
/* free the memory allocated by opendir */
DllExport int
win32_closedir(DIR *dirp)
{
if (dirp->handle != INVALID_HANDLE_VALUE)
FindClose(dirp->handle);
Safefree(dirp->start);
Safefree(dirp);
return 1;
}
/* duplicate a open DIR* for interpreter cloning */
DllExport DIR *
win32_dirp_dup(DIR *const dirp, CLONE_PARAMS *const param)
{
PerlInterpreter *const from = param->proto_perl;
PerlInterpreter *const to = (PerlInterpreter *)PERL_GET_THX;
long pos;
DIR *dup;
/* switch back to original interpreter because win32_readdir()
* might Renew(dirp->start).
*/
if (from != to) {
PERL_SET_THX(from);
}
/* mark current position; read all remaining entries into the
* cache, and then restore to current position.
*/
pos = win32_telldir(dirp);
while (win32_readdir(dirp)) {
/* read all entries into cache */
}
win32_seekdir(dirp, pos);
/* switch back to new interpreter to allocate new DIR structure */
if (from != to) {
PERL_SET_THX(to);
}
Newx(dup, 1, DIR);
memcpy(dup, dirp, sizeof(DIR));
Newx(dup->start, dirp->size, char);
memcpy(dup->start, dirp->start, dirp->size);
dup->end = dup->start + (dirp->end - dirp->start);
if (dirp->curr)
dup->curr = dup->start + (dirp->curr - dirp->start);
return dup;
}
/*
* various stubs
*/
/* Ownership
*
* Just pretend that everyone is a superuser. NT will let us know if
* we don\'t really have permission to do something.
*/
#define ROOT_UID ((uid_t)0)
#define ROOT_GID ((gid_t)0)
uid_t
getuid(void)
{
return ROOT_UID;
}
uid_t
geteuid(void)
{
return ROOT_UID;
}
gid_t
getgid(void)
{
return ROOT_GID;
}
gid_t
getegid(void)
{
return ROOT_GID;
}
int
setuid(uid_t auid)
{
return (auid == ROOT_UID ? 0 : -1);
}
int
setgid(gid_t agid)
{
return (agid == ROOT_GID ? 0 : -1);
}
EXTERN_C char *
getlogin(void)
{
dTHX;
char *buf = w32_getlogin_buffer;
DWORD size = sizeof(w32_getlogin_buffer);
if (GetUserName(buf,&size))
return buf;
return (char*)NULL;
}
int
chown(const char *path, uid_t owner, gid_t group)
{
/* XXX noop */
PERL_UNUSED_ARG(path);
PERL_UNUSED_ARG(owner);
PERL_UNUSED_ARG(group);
return 0;
}
/*
* XXX this needs strengthening (for PerlIO)
* -- BKS, 11-11-200
*/
#if((!defined(__MINGW64_VERSION_MAJOR) || __MINGW64_VERSION_MAJOR < 4) && \
(!defined(__MINGW32_MAJOR_VERSION) || __MINGW32_MAJOR_VERSION < 3 || \
(__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION < 21)))
int mkstemp(const char *path)
{
dTHX;
char buf[MAX_PATH+1];
int i = 0, fd = -1;
retry:
if (i++ > 10) { /* give up */
errno = ENOENT;
return -1;
}
if (!GetTempFileNameA((LPCSTR)path, "plr", 1, buf)) {
errno = ENOENT;
return -1;
}
fd = PerlLIO_open3(buf, O_CREAT|O_RDWR|O_EXCL, 0600);
if (fd == -1)
goto retry;
return fd;
}
#endif
static long
find_pid(pTHX_ int pid)
{
long child = w32_num_children;
while (--child >= 0) {
if ((int)w32_child_pids[child] == pid)
return child;
}
return -1;
}
static void
remove_dead_process(long child)
{
if (child >= 0) {
dTHX;
CloseHandle(w32_child_handles[child]);
Move(&w32_child_handles[child+1], &w32_child_handles[child],
(w32_num_children-child-1), HANDLE);
Move(&w32_child_pids[child+1], &w32_child_pids[child],
(w32_num_children-child-1), DWORD);
w32_num_children--;
}
}
#ifdef USE_ITHREADS
static long
find_pseudo_pid(pTHX_ int pid)
{
long child = w32_num_pseudo_children;
while (--child >= 0) {
if ((int)w32_pseudo_child_pids[child] == pid)
return child;
}
return -1;
}
static void
remove_dead_pseudo_process(long child)
{
if (child >= 0) {
dTHX;
CloseHandle(w32_pseudo_child_handles[child]);
Move(&w32_pseudo_child_handles[child+1], &w32_pseudo_child_handles[child],
(w32_num_pseudo_children-child-1), HANDLE);
Move(&w32_pseudo_child_pids[child+1], &w32_pseudo_child_pids[child],
(w32_num_pseudo_children-child-1), DWORD);
Move(&w32_pseudo_child_message_hwnds[child+1], &w32_pseudo_child_message_hwnds[child],
(w32_num_pseudo_children-child-1), HWND);
Move(&w32_pseudo_child_sigterm[child+1], &w32_pseudo_child_sigterm[child],
(w32_num_pseudo_children-child-1), char);
w32_num_pseudo_children--;
}
}
void
win32_wait_for_children(pTHX)
{
if (w32_pseudo_children && w32_num_pseudo_children) {
long child = 0;
long count = 0;
HANDLE handles[MAXIMUM_WAIT_OBJECTS];
for (child = 0; child < w32_num_pseudo_children; ++child) {
if (!w32_pseudo_child_sigterm[child])
handles[count++] = w32_pseudo_child_handles[child];
}
/* XXX should use MsgWaitForMultipleObjects() to continue
* XXX processing messages while we wait.
*/
WaitForMultipleObjects(count, handles, TRUE, INFINITE);
while (w32_num_pseudo_children)
CloseHandle(w32_pseudo_child_handles[--w32_num_pseudo_children]);
}
}
#endif
static int
terminate_process(DWORD pid, HANDLE process_handle, int sig)
{
switch(sig) {
case 0:
/* "Does process exist?" use of kill */
return 1;
case 2:
if (GenerateConsoleCtrlEvent(CTRL_C_EVENT, pid))
return 1;
break;
case SIGBREAK:
case SIGTERM:
if (GenerateConsoleCtrlEvent(CTRL_BREAK_EVENT, pid))
return 1;
break;
default: /* For now be backwards compatible with perl 5.6 */
case 9:
/* Note that we will only be able to kill processes owned by the
* current process owner, even when we are running as an administrator.
* To kill processes of other owners we would need to set the
* 'SeDebugPrivilege' privilege before obtaining the process handle.
*/
if (TerminateProcess(process_handle, sig))
return 1;
break;
}
return 0;
}
/* returns number of processes killed */
static int
my_killpg(int pid, int sig)
{
HANDLE process_handle;
HANDLE snapshot_handle;
int killed = 0;
process_handle = OpenProcess(PROCESS_TERMINATE, FALSE, pid);
if (process_handle == NULL)
return 0;
killed += terminate_process(pid, process_handle, sig);
snapshot_handle = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
if (snapshot_handle != INVALID_HANDLE_VALUE) {
PROCESSENTRY32 entry;
entry.dwSize = sizeof(entry);
if (Process32First(snapshot_handle, &entry)) {
do {
if (entry.th32ParentProcessID == (DWORD)pid)
killed += my_killpg(entry.th32ProcessID, sig);
entry.dwSize = sizeof(entry);
}
while (Process32Next(snapshot_handle, &entry));
}
CloseHandle(snapshot_handle);
}
CloseHandle(process_handle);
return killed;
}
/* returns number of processes killed */
static int
my_kill(int pid, int sig)
{
int retval = 0;
HANDLE process_handle;
if (sig < 0)
return my_killpg(pid, -sig);
process_handle = OpenProcess(PROCESS_TERMINATE, FALSE, pid);
/* OpenProcess() returns NULL on error, *not* INVALID_HANDLE_VALUE */
if (process_handle != NULL) {
retval = terminate_process(pid, process_handle, sig);
CloseHandle(process_handle);
}
return retval;
}
#ifdef USE_ITHREADS
/* Get a child pseudo-process HWND, with retrying and delaying/yielding.
* The "tries" parameter is the number of retries to make, with a Sleep(1)
* (waiting and yielding the time slot) between each try. Specifying 0 causes
* only Sleep(0) (no waiting and potentially no yielding) to be used, so is not
* recommended
* Returns an hwnd != INVALID_HANDLE_VALUE (so be aware that NULL can be
* returned) or croaks if the child pseudo-process doesn't schedule and deliver
* a HWND in the time period allowed.
*/
static HWND
get_hwnd_delay(pTHX, long child, DWORD tries)
{
HWND hwnd = w32_pseudo_child_message_hwnds[child];
if (hwnd != INVALID_HANDLE_VALUE) return hwnd;
/* Pseudo-process has not yet properly initialized since hwnd isn't set.
* Fast sleep: On some NT kernels/systems, a Sleep(0) won't deschedule a
* thread 100% of the time since threads are attached to a CPU for NUMA and
* caching reasons, and the child thread was attached to a different CPU
* therefore there is no workload on that CPU and Sleep(0) returns control
* without yielding the time slot.
* https://github.com/Perl/perl5/issues/11267
*/
Sleep(0);
win32_async_check(aTHX);
hwnd = w32_pseudo_child_message_hwnds[child];
if (hwnd != INVALID_HANDLE_VALUE) return hwnd;
{
unsigned int count = 0;
/* No Sleep(1) if tries==0, just fail instead if we get this far. */
while (count++ < tries) {
Sleep(1);
win32_async_check(aTHX);
hwnd = w32_pseudo_child_message_hwnds[child];
if (hwnd != INVALID_HANDLE_VALUE) return hwnd;
}
}
croak("panic: child pseudo-process was never scheduled");
}
#endif
DllExport int
win32_kill(int pid, int sig)
{
dTHX;
long child;
#ifdef USE_ITHREADS
if (pid < 0) {
/* it is a pseudo-forked child */
child = find_pseudo_pid(aTHX_ -pid);
if (child >= 0) {
HANDLE hProcess = w32_pseudo_child_handles[child];
switch (sig) {
case 0:
/* "Does process exist?" use of kill */
return 0;
case 9: {
/* kill -9 style un-graceful exit */
/* Do a wait to make sure child starts and isn't in DLL
* Loader Lock */
(void)get_hwnd_delay(aTHX, child, 5);
if (TerminateThread(hProcess, sig)) {
/* Allow the scheduler to finish cleaning up the other
* thread.
* Otherwise, if we ExitProcess() before another context
* switch happens we will end up with a process exit
* code of "sig" instead of our own exit status.
* https://rt.cpan.org/Ticket/Display.html?id=66016#txn-908976
*/
Sleep(0);
remove_dead_pseudo_process(child);
return 0;
}
break;
}
default: {
HWND hwnd = get_hwnd_delay(aTHX, child, 5);
/* We fake signals to pseudo-processes using Win32
* message queue. */
if ((hwnd != NULL && PostMessage(hwnd, WM_USER_KILL, sig, 0)) ||
PostThreadMessage(-pid, WM_USER_KILL, sig, 0))
{
/* Don't wait for child process to terminate after we send a
* SIGTERM because the child may be blocked in a system call
* and never receive the signal.
*/
if (sig == SIGTERM) {
Sleep(0);
w32_pseudo_child_sigterm[child] = 1;
}
/* It might be us ... */
PERL_ASYNC_CHECK();
return 0;
}
break;
}
} /* switch */
}
}
else
#endif
{
child = find_pid(aTHX_ pid);
if (child >= 0) {
if (my_kill(pid, sig)) {
DWORD exitcode = 0;
if (GetExitCodeProcess(w32_child_handles[child], &exitcode) &&
exitcode != STILL_ACTIVE)
{
remove_dead_process(child);
}
return 0;
}
}
else {
if (my_kill(pid, sig))
return 0;
}
}
errno = EINVAL;
return -1;
}
PERL_STATIC_INLINE
time_t
translate_ft_to_time_t(FILETIME ft) {
SYSTEMTIME st;
struct tm pt;
time_t retval;
dTHX;
if (!FileTimeToSystemTime(&ft, &st))
return -1;
Zero(&pt, 1, struct tm);
pt.tm_year = st.wYear - 1900;
pt.tm_mon = st.wMonth - 1;
pt.tm_mday = st.wDay;
pt.tm_hour = st.wHour;
pt.tm_min = st.wMinute;
pt.tm_sec = st.wSecond;
MKTIME_LOCK;
retval = _mkgmtime(&pt);
MKTIME_UNLOCK;
return retval;
}
typedef DWORD (__stdcall *pGetFinalPathNameByHandleA_t)(HANDLE, LPSTR, DWORD, DWORD);
/* Adapted from:
https://docs.microsoft.com/en-us/windows-hardware/drivers/ddi/ntifs/ns-ntifs-_reparse_data_buffer
Renamed to avoid conflicts, apparently some SDKs define this
structure.
Hoisted the symlink and mount point data into a new type to allow us
to make a pointer to it, and to avoid C++ scoping issues.
*/
typedef struct {
USHORT SubstituteNameOffset;
USHORT SubstituteNameLength;
USHORT PrintNameOffset;
USHORT PrintNameLength;
ULONG Flags;
WCHAR PathBuffer[MAX_PATH*3];
} MY_SYMLINK_REPARSE_BUFFER, *PMY_SYMLINK_REPARSE_BUFFER;
typedef struct {
USHORT SubstituteNameOffset;
USHORT SubstituteNameLength;
USHORT PrintNameOffset;
USHORT PrintNameLength;
WCHAR PathBuffer[MAX_PATH*3];
} MY_MOUNT_POINT_REPARSE_BUFFER;
typedef struct {
ULONG ReparseTag;
USHORT ReparseDataLength;
USHORT Reserved;
union {
MY_SYMLINK_REPARSE_BUFFER SymbolicLinkReparseBuffer;
MY_MOUNT_POINT_REPARSE_BUFFER MountPointReparseBuffer;
struct {
UCHAR DataBuffer[1];
} GenericReparseBuffer;
} Data;
} MY_REPARSE_DATA_BUFFER, *PMY_REPARSE_DATA_BUFFER;
#ifndef IO_REPARSE_TAG_SYMLINK
# define IO_REPARSE_TAG_SYMLINK (0xA000000CL)
#endif
#ifndef IO_REPARSE_TAG_AF_UNIX
# define IO_REPARSE_TAG_AF_UNIX 0x80000023
#endif
#ifndef IO_REPARSE_TAG_LX_FIFO
# define IO_REPARSE_TAG_LX_FIFO 0x80000024
#endif
#ifndef IO_REPARSE_TAG_LX_CHR
# define IO_REPARSE_TAG_LX_CHR 0x80000025
#endif
#ifndef IO_REPARSE_TAG_LX_BLK
# define IO_REPARSE_TAG_LX_BLK 0x80000026
#endif
static int
win32_stat_low(HANDLE handle, const char *path, STRLEN len, Stat_t *sbuf,
DWORD reparse_type) {
DWORD type = GetFileType(handle);
BY_HANDLE_FILE_INFORMATION bhi;
Zero(sbuf, 1, Stat_t);
if (reparse_type) {
/* Lie to get to the right place */
type = FILE_TYPE_DISK;
}
type &= ~FILE_TYPE_REMOTE;
switch (type) {
case FILE_TYPE_DISK:
if (GetFileInformationByHandle(handle, &bhi)) {
sbuf->st_dev = bhi.dwVolumeSerialNumber;
sbuf->st_ino = bhi.nFileIndexHigh;
sbuf->st_ino <<= 32;
sbuf->st_ino |= bhi.nFileIndexLow;
sbuf->st_nlink = bhi.nNumberOfLinks;
sbuf->st_uid = 0;
sbuf->st_gid = 0;
/* ucrt sets this to the drive letter for
stat(), lets not reproduce that mistake */
sbuf->st_rdev = 0;
sbuf->st_size = bhi.nFileSizeHigh;
sbuf->st_size <<= 32;
sbuf->st_size |= bhi.nFileSizeLow;
sbuf->st_atime = translate_ft_to_time_t(bhi.ftLastAccessTime);
sbuf->st_mtime = translate_ft_to_time_t(bhi.ftLastWriteTime);
sbuf->st_ctime = translate_ft_to_time_t(bhi.ftCreationTime);
if (reparse_type) {
/* https://docs.microsoft.com/en-us/openspecs/windows_protocols/ms-fscc/c8e77b37-3909-4fe6-a4ea-2b9d423b1ee4
describes all of these as WSL only, but the AF_UNIX tag
is known to be used for AF_UNIX sockets without WSL.
*/
switch (reparse_type) {
case IO_REPARSE_TAG_AF_UNIX:
sbuf->st_mode = _S_IFSOCK;
break;
case IO_REPARSE_TAG_LX_FIFO:
sbuf->st_mode = _S_IFIFO;
break;
case IO_REPARSE_TAG_LX_CHR:
sbuf->st_mode = _S_IFCHR;
break;
case IO_REPARSE_TAG_LX_BLK:
sbuf->st_mode = _S_IFBLK;
break;
default:
/* Is there anything else we can do here? */
errno = EINVAL;
return -1;
}
}
else if (bhi.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) {
sbuf->st_mode = _S_IFDIR | _S_IREAD | _S_IEXEC;
/* duplicate the logic from the end of the old win32_stat() */
if (!(bhi.dwFileAttributes & FILE_ATTRIBUTE_READONLY)) {
sbuf->st_mode |= S_IWRITE;
}
}
else {
char path_buf[MAX_PATH+1];
sbuf->st_mode = _S_IFREG;
if (!path) {
pGetFinalPathNameByHandleA_t pGetFinalPathNameByHandleA =
(pGetFinalPathNameByHandleA_t)GetProcAddress(GetModuleHandle("kernel32.dll"), "GetFinalPathNameByHandleA");
if (pGetFinalPathNameByHandleA) {
len = pGetFinalPathNameByHandleA(handle, path_buf, sizeof(path_buf), 0);
}
else {
len = 0;
}
/* < to ensure there's space for the \0 */
if (len && len < sizeof(path_buf)) {
path = path_buf;
}
}
if (path && len > 4 &&
(_stricmp(path + len - 4, ".exe") == 0 ||
_stricmp(path + len - 4, ".bat") == 0 ||
_stricmp(path + len - 4, ".cmd") == 0 ||
_stricmp(path + len - 4, ".com") == 0)) {
sbuf->st_mode |= _S_IEXEC;
}
if (!(bhi.dwFileAttributes & FILE_ATTRIBUTE_READONLY)) {
sbuf->st_mode |= _S_IWRITE;
}
sbuf->st_mode |= _S_IREAD;
}
}
else {
translate_to_errno();
return -1;
}
break;
case FILE_TYPE_CHAR:
case FILE_TYPE_PIPE:
sbuf->st_mode = (type == FILE_TYPE_CHAR) ? _S_IFCHR : _S_IFIFO;
if (handle == GetStdHandle(STD_INPUT_HANDLE) ||
handle == GetStdHandle(STD_OUTPUT_HANDLE) ||
handle == GetStdHandle(STD_ERROR_HANDLE)) {
sbuf->st_mode |= _S_IWRITE | _S_IREAD;
}
break;
default:
return -1;
}
/* owner == user == group */
sbuf->st_mode |= (sbuf->st_mode & 0700) >> 3;
sbuf->st_mode |= (sbuf->st_mode & 0700) >> 6;
return 0;
}
/* https://docs.microsoft.com/en-us/windows/win32/fileio/reparse-points */
#define SYMLINK_FOLLOW_LIMIT 63
/*
Given a pathname, required to be a symlink, follow it until we find a
non-symlink path.
This should only be called when the symlink() chain doesn't lead to a
normal file, which should have been caught earlier.
On success, returns a HANDLE to the target and sets *reparse_type to
the ReparseTag of the target.
Returns INVALID_HANDLE_VALUE on error, which might be that the symlink
chain is broken, or requires too many links to resolve.
*/
static HANDLE
S_follow_symlinks_to(pTHX_ const char *pathname, DWORD *reparse_type) {
char link_target[MAX_PATH];
SV *work_path = newSVpvn(pathname, strlen(pathname));
int link_count = 0;
int link_len;
HANDLE handle;
*reparse_type = 0;
while ((link_len = win32_readlink(SvPVX(work_path), link_target,
sizeof(link_target))) > 0) {
if (link_count++ >= SYMLINK_FOLLOW_LIMIT) {
/* Windows doesn't appear to ever return ELOOP,
let's do better ourselves
*/
SvREFCNT_dec(work_path);
errno = ELOOP;
return INVALID_HANDLE_VALUE;
}
/* Adjust the linktarget based on the link source or current
directory as needed.
*/
if (link_target[0] == '\\'
|| link_target[0] == '/'
|| (link_len >=2 && link_target[1] == ':')) {
/* link is absolute */
sv_setpvn(work_path, link_target, link_len);
}
else {
STRLEN work_len;
const char *workp = SvPV(work_path, work_len);
const char *final_bslash =
(const char *)my_memrchr(workp, '\\', work_len);
const char *final_slash =
(const char *)my_memrchr(workp, '/', work_len);
const char *path_sep = NULL;
if (final_bslash && final_slash)
path_sep = final_bslash > final_slash ? final_bslash : final_slash;
else if (final_bslash)
path_sep = final_bslash;
else if (final_slash)
path_sep = final_slash;
if (path_sep) {
SV *new_path = newSVpv(workp, path_sep - workp + 1);
sv_catpvn(new_path, link_target, link_len);
SvREFCNT_dec(work_path);
work_path = new_path;
}
else {
/* should only get here the first time around */
assert(link_count == 1);
char path_temp[MAX_PATH];
DWORD path_len = GetCurrentDirectoryA(sizeof(path_temp), path_temp);
if (!path_len || path_len > sizeof(path_temp)) {
SvREFCNT_dec(work_path);
errno = EINVAL;
return INVALID_HANDLE_VALUE;
}
SV *new_path = newSVpvn(path_temp, path_len);
if (path_temp[path_len-1] != '\\') {
sv_catpvs(new_path, "\\");
}
sv_catpvn(new_path, link_target, link_len);
SvREFCNT_dec(work_path);
work_path = new_path;
}
}
}
handle =
CreateFileA(SvPVX(work_path), GENERIC_READ, 0, NULL, OPEN_EXISTING,
FILE_FLAG_OPEN_REPARSE_POINT|FILE_FLAG_BACKUP_SEMANTICS, 0);
SvREFCNT_dec(work_path);
if (handle != INVALID_HANDLE_VALUE) {
MY_REPARSE_DATA_BUFFER linkdata;
DWORD linkdata_returned;
if (!DeviceIoControl(handle, FSCTL_GET_REPARSE_POINT, NULL, 0,
&linkdata, sizeof(linkdata),
&linkdata_returned, NULL)) {
translate_to_errno();
CloseHandle(handle);
return INVALID_HANDLE_VALUE;
}
*reparse_type = linkdata.ReparseTag;
return handle;
}
else {
translate_to_errno();
}
return handle;
}
DllExport int
win32_stat(const char *path, Stat_t *sbuf)
{
dTHX;
int result;
HANDLE handle;
DWORD reparse_type = 0;
path = PerlDir_mapA(path);
handle =
CreateFileA(path, FILE_READ_ATTRIBUTES,
FILE_SHARE_DELETE | FILE_SHARE_READ | FILE_SHARE_WRITE,
NULL, OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, NULL);
if (handle == INVALID_HANDLE_VALUE) {
/* AF_UNIX sockets need to be opened as a reparse point, but
that will also open symlinks rather than following them.
There may be other reparse points that need similar
treatment.
*/
handle = S_follow_symlinks_to(aTHX_ path, &reparse_type);
if (handle == INVALID_HANDLE_VALUE) {
/* S_follow_symlinks_to() will set errno */
return -1;
}
}
if (handle != INVALID_HANDLE_VALUE) {
result = win32_stat_low(handle, path, strlen(path), sbuf, reparse_type);
CloseHandle(handle);
}
else {
translate_to_errno();
result = -1;
}
return result;
}
static void
translate_to_errno(void)
{
/* This isn't perfect, eg. Win32 returns ERROR_ACCESS_DENIED for
both permissions errors and if the source is a directory, while
POSIX wants EACCES and EPERM respectively.
*/
switch (GetLastError()) {
case ERROR_BAD_NET_NAME:
case ERROR_BAD_NETPATH:
case ERROR_BAD_PATHNAME:
case ERROR_FILE_NOT_FOUND:
case ERROR_FILENAME_EXCED_RANGE:
case ERROR_INVALID_DRIVE:
case ERROR_PATH_NOT_FOUND:
errno = ENOENT;
break;
case ERROR_ALREADY_EXISTS:
errno = EEXIST;
break;
case ERROR_ACCESS_DENIED:
errno = EACCES;
break;
case ERROR_PRIVILEGE_NOT_HELD:
errno = EPERM;
break;
case ERROR_NOT_SAME_DEVICE:
errno = EXDEV;
break;
case ERROR_DISK_FULL:
errno = ENOSPC;
break;
case ERROR_NOT_ENOUGH_QUOTA:
errno = EDQUOT;
break;
default:
/* ERROR_INVALID_FUNCTION - eg. symlink on a FAT volume */
errno = EINVAL;
break;
}
}
static BOOL
is_symlink(HANDLE h) {
MY_REPARSE_DATA_BUFFER linkdata;
DWORD linkdata_returned;
if (!DeviceIoControl(h, FSCTL_GET_REPARSE_POINT, NULL, 0, &linkdata, sizeof(linkdata), &linkdata_returned, NULL)) {
return FALSE;
}
if (linkdata_returned < offsetof(MY_REPARSE_DATA_BUFFER, Data.SymbolicLinkReparseBuffer.PathBuffer)
|| (linkdata.ReparseTag != IO_REPARSE_TAG_SYMLINK
&& linkdata.ReparseTag != IO_REPARSE_TAG_MOUNT_POINT)) {
/* some other type of reparse point */
return FALSE;
}
return TRUE;
}
static BOOL
is_symlink_name(const char *name) {
HANDLE f = CreateFileA(name, GENERIC_READ, 0, NULL, OPEN_EXISTING,
FILE_FLAG_OPEN_REPARSE_POINT|FILE_FLAG_BACKUP_SEMANTICS, 0);
BOOL result;
if (f == INVALID_HANDLE_VALUE) {
return FALSE;
}
result = is_symlink(f);
CloseHandle(f);
return result;
}
static int
do_readlink_handle(HANDLE hlink, char *buf, size_t bufsiz, bool *is_symlink) {
MY_REPARSE_DATA_BUFFER linkdata;
DWORD linkdata_returned;
if (is_symlink)
*is_symlink = FALSE;
if (!DeviceIoControl(hlink, FSCTL_GET_REPARSE_POINT, NULL, 0, &linkdata, sizeof(linkdata), &linkdata_returned, NULL)) {
translate_to_errno();
return -1;
}
int bytes_out;
BOOL used_default;
switch (linkdata.ReparseTag) {
case IO_REPARSE_TAG_SYMLINK:
{
const MY_SYMLINK_REPARSE_BUFFER * const sd =
&linkdata.Data.SymbolicLinkReparseBuffer;
if (linkdata_returned < offsetof(MY_REPARSE_DATA_BUFFER, Data.SymbolicLinkReparseBuffer.PathBuffer)) {
errno = EINVAL;
return -1;
}
bytes_out =
WideCharToMultiByte(CP_ACP, WC_NO_BEST_FIT_CHARS,
sd->PathBuffer + sd->PrintNameOffset/2,
sd->PrintNameLength/2,
buf, (int)bufsiz, NULL, &used_default);
if (is_symlink)
*is_symlink = TRUE;
}
break;
case IO_REPARSE_TAG_MOUNT_POINT:
{
const MY_MOUNT_POINT_REPARSE_BUFFER * const rd =
&linkdata.Data.MountPointReparseBuffer;
if (linkdata_returned < offsetof(MY_REPARSE_DATA_BUFFER, Data.MountPointReparseBuffer.PathBuffer)) {
errno = EINVAL;
return -1;
}
bytes_out =
WideCharToMultiByte(CP_ACP, WC_NO_BEST_FIT_CHARS,
rd->PathBuffer + rd->PrintNameOffset/2,
rd->PrintNameLength/2,
buf, (int)bufsiz, NULL, &used_default);
if (is_symlink)
*is_symlink = TRUE;
}
break;
default:
errno = EINVAL;
return -1;
}
if (bytes_out == 0 || used_default) {
/* failed conversion from unicode to ANSI or otherwise failed */
errno = EINVAL;
return -1;
}
return bytes_out;
}
DllExport int
win32_readlink(const char *pathname, char *buf, size_t bufsiz) {
if (pathname == NULL || buf == NULL) {
errno = EFAULT;
return -1;
}
if (bufsiz <= 0) {
errno = EINVAL;
return -1;
}
DWORD fileattr = GetFileAttributes(pathname);
if (fileattr == INVALID_FILE_ATTRIBUTES) {
translate_to_errno();
return -1;
}
if (!(fileattr & FILE_ATTRIBUTE_REPARSE_POINT)) {
/* not a symbolic link */
errno = EINVAL;
return -1;
}
HANDLE hlink =
CreateFileA(pathname, GENERIC_READ, 0, NULL, OPEN_EXISTING,
FILE_FLAG_OPEN_REPARSE_POINT|FILE_FLAG_BACKUP_SEMANTICS, 0);
if (hlink == INVALID_HANDLE_VALUE) {
translate_to_errno();
return -1;
}
int bytes_out = do_readlink_handle(hlink, buf, bufsiz, NULL);
CloseHandle(hlink);
if (bytes_out < 0) {
/* errno already set */
return -1;
}
if ((size_t)bytes_out > bufsiz) {
errno = EINVAL;
return -1;
}
return bytes_out;
}
DllExport int
win32_lstat(const char *path, Stat_t *sbuf)
{
HANDLE f;
int result;
DWORD attr = GetFileAttributes(path); /* doesn't follow symlinks */
if (attr == INVALID_FILE_ATTRIBUTES) {
translate_to_errno();
return -1;
}
if (!(attr & FILE_ATTRIBUTE_REPARSE_POINT)) {
return win32_stat(path, sbuf);
}
f = CreateFileA(path, GENERIC_READ, 0, NULL, OPEN_EXISTING,
FILE_FLAG_OPEN_REPARSE_POINT|FILE_FLAG_BACKUP_SEMANTICS, 0);
if (f == INVALID_HANDLE_VALUE) {
translate_to_errno();
return -1;
}
bool is_symlink;
int size = do_readlink_handle(f, NULL, 0, &is_symlink);
if (!is_symlink) {
/* it isn't a symlink, fallback to normal stat */
CloseHandle(f);
return win32_stat(path, sbuf);
}
else if (size < 0) {
/* some other error, errno already set */
CloseHandle(f);
return -1;
}
result = win32_stat_low(f, NULL, 0, sbuf, 0);
if (result != -1){
sbuf->st_mode = (sbuf->st_mode & ~_S_IFMT) | _S_IFLNK;
sbuf->st_size = size;
}
CloseHandle(f);
return result;
}
#define isSLASH(c) ((c) == '/' || (c) == '\\')
#define SKIP_SLASHES(s) \
STMT_START { \
while (*(s) && isSLASH(*(s))) \
++(s); \
} STMT_END
#define COPY_NONSLASHES(d,s) \
STMT_START { \
while (*(s) && !isSLASH(*(s))) \
*(d)++ = *(s)++; \
} STMT_END
/* Find the longname of a given path. path is destructively modified.
* It should have space for at least MAX_PATH characters. */
DllExport char *
win32_longpath(char *path)
{
WIN32_FIND_DATA fdata;
HANDLE fhand;
char tmpbuf[MAX_PATH+1];
char *tmpstart = tmpbuf;
char *start = path;
char sep;
if (!path)
return NULL;
/* drive prefix */
if (isALPHA(path[0]) && path[1] == ':') {
start = path + 2;
*tmpstart++ = path[0];
*tmpstart++ = ':';
}
/* UNC prefix */
else if (isSLASH(path[0]) && isSLASH(path[1])) {
start = path + 2;
*tmpstart++ = path[0];
*tmpstart++ = path[1];
SKIP_SLASHES(start);
COPY_NONSLASHES(tmpstart,start); /* copy machine name */
if (*start) {
*tmpstart++ = *start++;
SKIP_SLASHES(start);
COPY_NONSLASHES(tmpstart,start); /* copy share name */
}
}
*tmpstart = '\0';
while (*start) {
/* copy initial slash, if any */
if (isSLASH(*start)) {
*tmpstart++ = *start++;
*tmpstart = '\0';
SKIP_SLASHES(start);
}
/* FindFirstFile() expands "." and "..", so we need to pass
* those through unmolested */
if (*start == '.'
&& (!start[1] || isSLASH(start[1])
|| (start[1] == '.' && (!start[2] || isSLASH(start[2])))))
{
COPY_NONSLASHES(tmpstart,start); /* copy "." or ".." */
*tmpstart = '\0';
continue;
}
/* if this is the end, bust outta here */
if (!*start)
break;
/* now we're at a non-slash; walk up to next slash */
while (*start && !isSLASH(*start))
++start;
/* stop and find full name of component */
sep = *start;
*start = '\0';
fhand = FindFirstFile(path,&fdata);
*start = sep;
if (fhand != INVALID_HANDLE_VALUE) {
STRLEN len = strlen(fdata.cFileName);
if ((STRLEN)(tmpbuf + sizeof(tmpbuf) - tmpstart) > len) {
strcpy(tmpstart, fdata.cFileName);
tmpstart += len;
FindClose(fhand);
}
else {
FindClose(fhand);
errno = ERANGE;
return NULL;
}
}
else {
/* failed a step, just return without side effects */
errno = EINVAL;
return NULL;
}
}
strcpy(path,tmpbuf);
return path;
}
static void
out_of_memory(const char *context, STRLEN len)
{
if (PL_curinterp)
croak_no_mem_ext(context, len);
exit(1);
}
void
win32_croak_not_implemented(const char * fname)
{
PERL_ARGS_ASSERT_WIN32_CROAK_NOT_IMPLEMENTED;
Perl_croak_nocontext("%s not implemented!\n", fname);
}
#ifdef _DEBUG
/* Converts a wide character (UTF-16) string to the Windows ANSI code page,
* potentially using the system's default replacement character for any
* unrepresentable characters. The caller must free() the returned string. */
static char*
wstr_to_str(const wchar_t* wstr)
{
BOOL used_default = FALSE;
size_t wlen = wcslen(wstr) + 1;
int len = WideCharToMultiByte(CP_ACP, WC_NO_BEST_FIT_CHARS, wstr, wlen,
NULL, 0, NULL, NULL);
char* str = (char*)malloc(len);
if (!str)
out_of_memory(STR_WITH_LEN("win32:wstr_to_str"));
WideCharToMultiByte(CP_ACP, WC_NO_BEST_FIT_CHARS, wstr, wlen,
str, len, NULL, &used_default);
return str;
}
#endif
/* The win32_ansipath() function takes a Unicode filename and converts it
* into the current Windows codepage. If some characters cannot be mapped,
* then it will convert the short name instead.
*
* The buffer to the ansi pathname must be freed with win32_free() when it
* is no longer needed.
*
* The argument to win32_ansipath() must exist before this function is
* called; otherwise there is no way to determine the short path name.
*
* Ideas for future refinement:
* - Only convert those segments of the path that are not in the current
* codepage, but leave the other segments in their long form.
* - If the resulting name is longer than MAX_PATH, start converting
* additional path segments into short names until the full name
* is shorter than MAX_PATH. Shorten the filename part last!
*/
DllExport char *
win32_ansipath(const WCHAR *widename)
{
char *name;
BOOL use_default = FALSE;
size_t widelen = wcslen(widename)+1;
int len = WideCharToMultiByte(CP_ACP, WC_NO_BEST_FIT_CHARS, widename, widelen,
NULL, 0, NULL, NULL);
name = (char*)win32_malloc(len);
if (!name)
out_of_memory(STR_WITH_LEN("win32:win32_ansipath"));
WideCharToMultiByte(CP_ACP, WC_NO_BEST_FIT_CHARS, widename, widelen,
name, len, NULL, &use_default);
if (use_default) {
DWORD shortlen = GetShortPathNameW(widename, NULL, 0);
if (shortlen) {
WCHAR *shortname = (WCHAR*)win32_malloc(shortlen*sizeof(WCHAR));
if (!shortname)
out_of_memory(STR_WITH_LEN("win32:win32_ansipath"));
shortlen = GetShortPathNameW(widename, shortname, shortlen)+1;
len = WideCharToMultiByte(CP_ACP, WC_NO_BEST_FIT_CHARS, shortname, shortlen,
NULL, 0, NULL, NULL);
name = (char*)win32_realloc(name, len);
if (!name)
out_of_memory(STR_WITH_LEN("win32:win32_ansipath"));
WideCharToMultiByte(CP_ACP, WC_NO_BEST_FIT_CHARS, shortname, shortlen,
name, len, NULL, NULL);
win32_free(shortname);
}
}
return name;
}
/* the returned string must be freed with win32_freeenvironmentstrings which is
* implemented as a macro
* void win32_freeenvironmentstrings(void* block)
*/
DllExport char *
win32_getenvironmentstrings(void)
{
LPWSTR lpWStr, lpWTmp;
LPSTR lpStr, lpTmp;
DWORD env_len, wenvstrings_len = 0, aenvstrings_len = 0;
/* Get the process environment strings */
lpWTmp = lpWStr = (LPWSTR) GetEnvironmentStringsW();
for (wenvstrings_len = 1; *lpWTmp != '\0'; lpWTmp += env_len + 1) {
env_len = wcslen(lpWTmp);
/* calculate the size of the environment strings */
wenvstrings_len += env_len + 1;
}
/* Get the number of bytes required to store the ACP encoded string */
aenvstrings_len = WideCharToMultiByte(CP_ACP, WC_NO_BEST_FIT_CHARS,
lpWStr, wenvstrings_len, NULL, 0, NULL, NULL);
lpTmp = lpStr = (char *)win32_calloc(aenvstrings_len, sizeof(char));
if(!lpTmp)
out_of_memory(STR_WITH_LEN("win32:win32_getenvironmentstrings"));
/* Convert the string from UTF-16 encoding to ACP encoding */
WideCharToMultiByte(CP_ACP, WC_NO_BEST_FIT_CHARS, lpWStr, wenvstrings_len, lpStr,
aenvstrings_len, NULL, NULL);
FreeEnvironmentStringsW(lpWStr);
return(lpStr);
}
DllExport char *
win32_getenv(const char *name)
{
dTHX;
DWORD needlen;
SV *curitem = NULL;
DWORD last_err;
needlen = GetEnvironmentVariableA(name,NULL,0);
if (needlen != 0) {
curitem = sv_2mortal(newSVpvs(""));
do {
SvGROW(curitem, needlen+1);
needlen = GetEnvironmentVariableA(name,SvPVX(curitem),
needlen);
} while (needlen >= SvLEN(curitem));
SvCUR_set(curitem, needlen);
}
else {
last_err = GetLastError();
if (last_err == ERROR_NOT_ENOUGH_MEMORY) {
/* It appears the variable is in the env, but the Win32 API
doesn't have a canned way of getting it. So we fall back to
grabbing the whole env and pulling this value out if possible */
char *envv = GetEnvironmentStrings();
char *cur = envv;
STRLEN len;
while (*cur) {
char *end = strchr(cur,'=');
if (end && end != cur) {
*end = '\0';
if (strEQ(cur,name)) {
curitem = sv_2mortal(newSVpv(end+1,0));
*end = '=';
break;
}
*end = '=';
cur = end + strlen(end+1)+2;
}
else if ((len = strlen(cur)))
cur += len+1;
}
FreeEnvironmentStrings(envv);
}
#ifndef WIN32_NO_REGISTRY
else {
/* last ditch: allow any environment variables that begin with 'PERL'
to be obtained from the registry, if found there */
if (strBEGINs(name, "PERL"))
(void)get_regstr(name, &curitem);
}
#endif
}
if (curitem && SvCUR(curitem))
return SvPVX(curitem);
return NULL;
}
DllExport int
win32_putenv(const char *name)
{
char* curitem;
char* val;
int relval = -1;
if (name) {
curitem = (char *) win32_malloc(strlen(name)+1);
strcpy(curitem, name);
val = strchr(curitem, '=');
if (val) {
/* The sane way to deal with the environment.
* Has these advantages over putenv() & co.:
* * enables us to store a truly empty value in the
* environment (like in UNIX).
* * we don't have to deal with RTL globals, bugs and leaks
* (specifically, see http://support.microsoft.com/kb/235601).
* * Much faster.
* Why you may want to use the RTL environment handling
* (previously enabled by USE_WIN32_RTL_ENV):
* * environ[] and RTL functions will not reflect changes,
* which might be an issue if extensions want to access
* the env. via RTL. This cuts both ways, since RTL will
* not see changes made by extensions that call the Win32
* functions directly, either.
* GSAR 97-06-07
*/
*val++ = '\0';
if (SetEnvironmentVariableA(curitem, *val ? val : NULL))
relval = 0;
}
win32_free(curitem);
}
return relval;
}
static long
filetime_to_clock(PFILETIME ft)
{
__int64 qw = ft->dwHighDateTime;
qw <<= 32;
qw |= ft->dwLowDateTime;
qw /= 10000; /* File time ticks at 0.1uS, clock at 1mS */
return (long) qw;
}
DllExport int
win32_times(struct tms *timebuf)
{
FILETIME user;
FILETIME kernel;
FILETIME dummy;
clock_t process_time_so_far = clock();
if (GetProcessTimes(GetCurrentProcess(), &dummy, &dummy,
&kernel,&user)) {
timebuf->tms_utime = filetime_to_clock(&user);
timebuf->tms_stime = filetime_to_clock(&kernel);
timebuf->tms_cutime = 0;
timebuf->tms_cstime = 0;
} else {
/* That failed - e.g. Win95 fallback to clock() */
timebuf->tms_utime = process_time_so_far;
timebuf->tms_stime = 0;
timebuf->tms_cutime = 0;
timebuf->tms_cstime = 0;
}
return process_time_so_far;
}
static BOOL
filetime_from_time(PFILETIME pFileTime, time_t Time)
{
struct tm *pt;
SYSTEMTIME st;
dTHX;
GMTIME_LOCK;
pt = gmtime(&Time);
if (!pt) {
GMTIME_UNLOCK;
pFileTime->dwLowDateTime = 0;
pFileTime->dwHighDateTime = 0;
return FALSE;
}
st.wYear = pt->tm_year + 1900;
st.wMonth = pt->tm_mon + 1;
st.wDay = pt->tm_mday;
st.wHour = pt->tm_hour;
st.wMinute = pt->tm_min;
st.wSecond = pt->tm_sec;
st.wMilliseconds = 0;
GMTIME_UNLOCK;
if (!SystemTimeToFileTime(&st, pFileTime)) {
pFileTime->dwLowDateTime = 0;
pFileTime->dwHighDateTime = 0;
return FALSE;
}
return TRUE;
}
DllExport int
win32_unlink(const char *filename)
{
dTHX;
int ret;
DWORD attrs;
filename = PerlDir_mapA(filename);
attrs = GetFileAttributesA(filename);
if (attrs == 0xFFFFFFFF) {
errno = ENOENT;
return -1;
}
if (attrs & FILE_ATTRIBUTE_READONLY) {
(void)SetFileAttributesA(filename, attrs & ~FILE_ATTRIBUTE_READONLY);
ret = unlink(filename);
if (ret == -1)
(void)SetFileAttributesA(filename, attrs);
}
else if ((attrs & (FILE_ATTRIBUTE_REPARSE_POINT | FILE_ATTRIBUTE_DIRECTORY))
== (FILE_ATTRIBUTE_REPARSE_POINT | FILE_ATTRIBUTE_DIRECTORY)
&& is_symlink_name(filename)) {
ret = rmdir(filename);
}
else {
ret = unlink(filename);
}
return ret;
}
DllExport int
win32_utime(const char *filename, struct utimbuf *times)
{
dTHX;
HANDLE handle;
FILETIME ftAccess;
FILETIME ftWrite;
struct utimbuf TimeBuffer;
int rc = -1;
filename = PerlDir_mapA(filename);
/* This will (and should) still fail on readonly files */
handle = CreateFileA(filename, GENERIC_READ | GENERIC_WRITE,
FILE_SHARE_READ | FILE_SHARE_WRITE, NULL,
OPEN_EXISTING, FILE_FLAG_BACKUP_SEMANTICS, NULL);
if (handle == INVALID_HANDLE_VALUE) {
translate_to_errno();
return -1;
}
if (times == NULL) {
times = &TimeBuffer;
time(×->actime);
times->modtime = times->actime;
}
if (filetime_from_time(&ftAccess, times->actime) &&
filetime_from_time(&ftWrite, times->modtime)) {
if (SetFileTime(handle, NULL, &ftAccess, &ftWrite)) {
rc = 0;
}
else {
translate_to_errno();
}
}
else {
errno = EINVAL; /* bad time? */
}
CloseHandle(handle);
return rc;
}
typedef union {
unsigned __int64 ft_i64;
FILETIME ft_val;
} FT_t;
#ifdef __GNUC__
#define Const64(x) x##LL
#else
#define Const64(x) x##i64
#endif
/* Number of 100 nanosecond units from 1/1/1601 to 1/1/1970 */
#define EPOCH_BIAS Const64(116444736000000000)
/* NOTE: This does not compute the timezone info (doing so can be expensive,
* and appears to be unsupported even by glibc) */
DllExport int
win32_gettimeofday(struct timeval *tp, void *not_used)
{
FT_t ft;
PERL_UNUSED_ARG(not_used);
/* this returns time in 100-nanosecond units (i.e. tens of usecs) */
GetSystemTimeAsFileTime(&ft.ft_val);
/* seconds since epoch */
tp->tv_sec = (long)((ft.ft_i64 - EPOCH_BIAS) / Const64(10000000));
/* microseconds remaining */
tp->tv_usec = (long)((ft.ft_i64 / Const64(10)) % Const64(1000000));
return 0;
}
DllExport int
win32_uname(struct utsname *name)
{
struct hostent *hep;
STRLEN nodemax = sizeof(name->nodename)-1;
/* sysname */
switch (g_osver.dwPlatformId) {
case VER_PLATFORM_WIN32_WINDOWS:
strcpy(name->sysname, "Windows");
break;
case VER_PLATFORM_WIN32_NT:
strcpy(name->sysname, "Windows NT");
break;
case VER_PLATFORM_WIN32s:
strcpy(name->sysname, "Win32s");
break;
default:
strcpy(name->sysname, "Win32 Unknown");
break;
}
/* release */
sprintf(name->release, "%d.%d",
g_osver.dwMajorVersion, g_osver.dwMinorVersion);
/* version */
sprintf(name->version, "Build %d",
g_osver.dwPlatformId == VER_PLATFORM_WIN32_NT
? g_osver.dwBuildNumber : (g_osver.dwBuildNumber & 0xffff));
if (g_osver.szCSDVersion[0]) {
char *buf = name->version + strlen(name->version);
sprintf(buf, " (%s)", g_osver.szCSDVersion);
}
/* nodename */
hep = win32_gethostbyname("localhost");
if (hep) {
STRLEN len = strlen(hep->h_name);
if (len <= nodemax) {
strcpy(name->nodename, hep->h_name);
}
else {
strncpy(name->nodename, hep->h_name, nodemax);
name->nodename[nodemax] = '\0';
}
}
else {
DWORD sz = nodemax;
if (!GetComputerName(name->nodename, &sz))
*name->nodename = '\0';
}
/* machine (architecture) */
{
SYSTEM_INFO info;
DWORD procarch;
const char *arch;
GetSystemInfo(&info);
#if (defined(__MINGW32__) && !defined(_ANONYMOUS_UNION) && !defined(__MINGW_EXTENSION))
procarch = info.u.s.wProcessorArchitecture;
#else
procarch = info.wProcessorArchitecture;
#endif
switch (procarch) {
case PROCESSOR_ARCHITECTURE_INTEL:
arch = "x86"; break;
case PROCESSOR_ARCHITECTURE_IA64:
arch = "ia64"; break;
case PROCESSOR_ARCHITECTURE_AMD64:
arch = "amd64"; break;
case PROCESSOR_ARCHITECTURE_UNKNOWN:
arch = "unknown"; break;
default:
sprintf(name->machine, "unknown(0x%x)", procarch);
arch = name->machine;
break;
}
if (name->machine != arch)
strcpy(name->machine, arch);
}
return 0;
}
/* Timing related stuff */
int
do_raise(pTHX_ int sig)
{
if (sig < SIG_SIZE) {
Sighandler_t handler = w32_sighandler[sig];
if (handler == SIG_IGN) {
return 0;
}
else if (handler != SIG_DFL) {
(*handler)(sig);
return 0;
}
else {
/* Choose correct default behaviour */
switch (sig) {
#ifdef SIGCLD
case SIGCLD:
#endif
#ifdef SIGCHLD
case SIGCHLD:
#endif
case 0:
return 0;
case SIGTERM:
default:
break;
}
}
}
/* Tell caller to exit thread/process as appropriate */
return 1;
}
void
sig_terminate(pTHX_ int sig)
{
warn("Terminating on signal SIG%s(%d)\n",PL_sig_name[sig], sig);
/* exit() seems to be safe, my_exit() or die() is a problem in ^C
thread
*/
exit(sig);
}
DllExport int
win32_async_check(pTHX)
{
MSG msg;
HWND hwnd = w32_message_hwnd;
/* Reset w32_poll_count before doing anything else, in case we dispatch
* messages that end up calling back into perl */
w32_poll_count = 0;
if (hwnd != INVALID_HANDLE_VALUE) {
/* Passing PeekMessage -1 as HWND (2nd arg) only gets PostThreadMessage() messages
* and ignores window messages - should co-exist better with windows apps e.g. Tk
*/
if (hwnd == NULL)
hwnd = (HWND)-1;
while (PeekMessage(&msg, hwnd, WM_TIMER, WM_TIMER, PM_REMOVE|PM_NOYIELD) ||
PeekMessage(&msg, hwnd, WM_USER_MIN, WM_USER_MAX, PM_REMOVE|PM_NOYIELD))
{
/* re-post a WM_QUIT message (we'll mark it as read later) */
if(msg.message == WM_QUIT) {
PostQuitMessage((int)msg.wParam);
break;
}
if(!CallMsgFilter(&msg, MSGF_USER))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
}
}
/* Call PeekMessage() to mark all pending messages in the queue as "old".
* This is necessary when we are being called by win32_msgwait() to
* make sure MsgWaitForMultipleObjects() stops reporting the same waiting
* message over and over. An example how this can happen is when
* Perl is calling win32_waitpid() inside a GUI application and the GUI
* is generating messages before the process terminated.
*/
PeekMessage(&msg, NULL, 0, 0, PM_NOREMOVE|PM_NOYIELD);
/* Above or other stuff may have set a signal flag */
if (PL_sig_pending)
despatch_signals();
return 1;
}
/* This function will not return until the timeout has elapsed, or until
* one of the handles is ready. */
DllExport DWORD
win32_msgwait(pTHX_ DWORD count, LPHANDLE handles, DWORD timeout, LPDWORD resultp)
{
/* We may need several goes at this - so compute when we stop */
FT_t ticks = {0};
unsigned __int64 endtime = timeout;
if (timeout != INFINITE) {
GetSystemTimeAsFileTime(&ticks.ft_val);
ticks.ft_i64 /= 10000;
endtime += ticks.ft_i64;
}
/* This was a race condition. Do not let a non INFINITE timeout to
* MsgWaitForMultipleObjects roll under 0 creating a near
* infinity/~(UINT32)0 timeout which will appear as a deadlock to the
* user who did a CORE perl function with a non infinity timeout,
* sleep for example. This is 64 to 32 truncation minefield.
*
* This scenario can only be created if the timespan from the return of
* MsgWaitForMultipleObjects to GetSystemTimeAsFileTime exceeds 1 ms. To
* generate the scenario, manual breakpoints in a C debugger are required,
* or a context switch occurred in win32_async_check in PeekMessage, or random
* messages are delivered to the *thread* message queue of the Perl thread
* from another process (msctf.dll doing IPC among its instances, VS debugger
* causes msctf.dll to be loaded into Perl by kernel), see [perl #33096].
*/
while (ticks.ft_i64 <= endtime) {
/* if timeout's type is lengthened, remember to split 64b timeout
* into multiple non-infinity runs of MWFMO */
DWORD result = MsgWaitForMultipleObjects(count, handles, FALSE,
(DWORD)(endtime - ticks.ft_i64),
QS_POSTMESSAGE|QS_TIMER|QS_SENDMESSAGE);
if (resultp)
*resultp = result;
if (result == WAIT_TIMEOUT) {
/* Ran out of time - explicit return of zero to avoid -ve if we
have scheduling issues
*/
return 0;
}
if (timeout != INFINITE) {
GetSystemTimeAsFileTime(&ticks.ft_val);
ticks.ft_i64 /= 10000;
}
if (result == WAIT_OBJECT_0 + count) {
/* Message has arrived - check it */
(void)win32_async_check(aTHX);
/* retry */
if (ticks.ft_i64 > endtime)
endtime = ticks.ft_i64;
continue;
}
else {
/* Not timeout or message - one of handles is ready */
break;
}
}
/* If we are past the end say zero */
if (!ticks.ft_i64 || ticks.ft_i64 > endtime)
return 0;
/* compute time left to wait */
ticks.ft_i64 = endtime - ticks.ft_i64;
/* if more ms than DWORD, then return max DWORD */
return ticks.ft_i64 <= UINT_MAX ? (DWORD)ticks.ft_i64 : UINT_MAX;
}
int
win32_internal_wait(pTHX_ int *status, DWORD timeout)
{
/* XXX this wait emulation only knows about processes
* spawned via win32_spawnvp(P_NOWAIT, ...).
*/
int i, retval;
DWORD exitcode, waitcode;
#ifdef USE_ITHREADS
if (w32_num_pseudo_children) {
win32_msgwait(aTHX_ w32_num_pseudo_children, w32_pseudo_child_handles,
timeout, &waitcode);
/* Time out here if there are no other children to wait for. */
if (waitcode == WAIT_TIMEOUT) {
if (!w32_num_children) {
return 0;
}
}
else if (waitcode != WAIT_FAILED) {
if (waitcode >= WAIT_ABANDONED_0
&& waitcode < WAIT_ABANDONED_0 + w32_num_pseudo_children)
i = waitcode - WAIT_ABANDONED_0;
else
i = waitcode - WAIT_OBJECT_0;
if (GetExitCodeThread(w32_pseudo_child_handles[i], &exitcode)) {
*status = (int)(((U8) exitcode) << 8);
retval = (int)w32_pseudo_child_pids[i];
remove_dead_pseudo_process(i);
return -retval;
}
}
}
#endif
if (!w32_num_children) {
errno = ECHILD;
return -1;
}
/* if a child exists, wait for it to die */
win32_msgwait(aTHX_ w32_num_children, w32_child_handles, timeout, &waitcode);
if (waitcode == WAIT_TIMEOUT) {
return 0;
}
if (waitcode != WAIT_FAILED) {
if (waitcode >= WAIT_ABANDONED_0
&& waitcode < WAIT_ABANDONED_0 + w32_num_children)
i = waitcode - WAIT_ABANDONED_0;
else
i = waitcode - WAIT_OBJECT_0;
if (GetExitCodeProcess(w32_child_handles[i], &exitcode) ) {
*status = (int)(((U8) exitcode) << 8);
retval = (int)w32_child_pids[i];
remove_dead_process(i);
return retval;
}
}
errno = GetLastError();
return -1;
}
DllExport int
win32_waitpid(int pid, int *status, int flags)
{
dTHX;
DWORD timeout = (flags & WNOHANG) ? 0 : INFINITE;
int retval = -1;
long child;
if (pid == -1) /* XXX threadid == 1 ? */
return win32_internal_wait(aTHX_ status, timeout);
#ifdef USE_ITHREADS
else if (pid < 0) {
child = find_pseudo_pid(aTHX_ -pid);
if (child >= 0) {
HANDLE hThread = w32_pseudo_child_handles[child];
DWORD waitcode;
win32_msgwait(aTHX_ 1, &hThread, timeout, &waitcode);
if (waitcode == WAIT_TIMEOUT) {
return 0;
}
else if (waitcode == WAIT_OBJECT_0) {
if (GetExitCodeThread(hThread, &waitcode)) {
*status = (int)(((U8) waitcode) << 8);
retval = (int)w32_pseudo_child_pids[child];
remove_dead_pseudo_process(child);
return -retval;
}
}
else
errno = ECHILD;
}
}
#endif
else {
HANDLE hProcess;
DWORD waitcode;
child = find_pid(aTHX_ pid);
if (child >= 0) {
hProcess = w32_child_handles[child];
win32_msgwait(aTHX_ 1, &hProcess, timeout, &waitcode);
if (waitcode == WAIT_TIMEOUT) {
return 0;
}
else if (waitcode == WAIT_OBJECT_0) {
if (GetExitCodeProcess(hProcess, &waitcode)) {
*status = (int)(((U8) waitcode) << 8);
retval = (int)w32_child_pids[child];
remove_dead_process(child);
return retval;
}
}
else
errno = ECHILD;
}
else {
hProcess = OpenProcess(PROCESS_ALL_ACCESS, TRUE, pid);
if (hProcess) {
win32_msgwait(aTHX_ 1, &hProcess, timeout, &waitcode);
if (waitcode == WAIT_TIMEOUT) {
CloseHandle(hProcess);
return 0;
}
else if (waitcode == WAIT_OBJECT_0) {
if (GetExitCodeProcess(hProcess, &waitcode)) {
*status = (int)(((U8) waitcode) << 8);
CloseHandle(hProcess);
return pid;
}
}
CloseHandle(hProcess);
}
else
errno = ECHILD;
}
}
return retval >= 0 ? pid : retval;
}
DllExport int
win32_wait(int *status)
{
dTHX;
return win32_internal_wait(aTHX_ status, INFINITE);
}
DllExport unsigned int
win32_sleep(unsigned int t)
{
dTHX;
/* Win32 times are in ms so *1000 in and /1000 out */
if (t > UINT_MAX / 1000) {
ck_warner(packWARN(WARN_OVERFLOW),
"sleep(%lu) too large", t);
}
return win32_msgwait(aTHX_ 0, NULL, t * 1000, NULL) / 1000;
}
DllExport int
win32_pause(void)
{
dTHX;
win32_msgwait(aTHX_ 0, NULL, INFINITE, NULL);
return -1;
}
DllExport unsigned int
win32_alarm(unsigned int sec)
{
/*
* the 'obvious' implementation is SetTimer() with a callback
* which does whatever receiving SIGALRM would do
* we cannot use SIGALRM even via raise() as it is not
* one of the supported codes in <signal.h>
*/
dTHX;
if (w32_message_hwnd == INVALID_HANDLE_VALUE)
w32_message_hwnd = win32_create_message_window();
if (sec) {
if (w32_message_hwnd == NULL)
w32_timerid = SetTimer(NULL, w32_timerid, sec*1000, NULL);
else {
w32_timerid = 1;
SetTimer(w32_message_hwnd, w32_timerid, sec*1000, NULL);
}
}
else {
if (w32_timerid) {
KillTimer(w32_message_hwnd, w32_timerid);
w32_timerid = 0;
}
}
return 0;
}
extern char * des_fcrypt(const char *txt, const char *salt, char *cbuf);
DllExport char *
win32_crypt(const char *txt, const char *salt)
{
dTHX;
return des_fcrypt(txt, salt, w32_crypt_buffer);
}
/* simulate flock by locking a range on the file */
#define LK_LEN 0xffff0000
DllExport int
win32_flock(int fd, int oper)
{
OVERLAPPED o;
int i = -1;
HANDLE fh;
fh = (HANDLE)_get_osfhandle(fd);
if (fh == (HANDLE)-1) /* _get_osfhandle() already sets errno to EBADF */
return -1;
memset(&o, 0, sizeof(o));
switch(oper) {
case LOCK_SH: /* shared lock */
if (LockFileEx(fh, 0, 0, LK_LEN, 0, &o))
i = 0;
break;
case LOCK_EX: /* exclusive lock */
if (LockFileEx(fh, LOCKFILE_EXCLUSIVE_LOCK, 0, LK_LEN, 0, &o))
i = 0;
break;
case LOCK_SH|LOCK_NB: /* non-blocking shared lock */
if (LockFileEx(fh, LOCKFILE_FAIL_IMMEDIATELY, 0, LK_LEN, 0, &o))
i = 0;
break;
case LOCK_EX|LOCK_NB: /* non-blocking exclusive lock */
if (LockFileEx(fh, LOCKFILE_EXCLUSIVE_LOCK|LOCKFILE_FAIL_IMMEDIATELY,
0, LK_LEN, 0, &o))
i = 0;
break;
case LOCK_UN: /* unlock lock */
if (UnlockFileEx(fh, 0, LK_LEN, 0, &o))
i = 0;
break;
default: /* unknown */
errno = EINVAL;
return -1;
}
if (i == -1) {
if (GetLastError() == ERROR_LOCK_VIOLATION)
errno = EWOULDBLOCK;
else
errno = EINVAL;
}
return i;
}
#undef LK_LEN
extern int convert_wsa_error_to_errno(int wsaerr); /* in win32sck.c */
/* Get the errno value corresponding to the given err. This function is not
* intended to handle conversion of general GetLastError() codes. It only exists
* to translate Windows sockets error codes from WSAGetLastError(). Such codes
* used to be assigned to errno/$! in earlier versions of perl; this function is
* used to catch any old Perl code which is still trying to assign such values
* to $! and convert them to errno values instead.
*/
int
win32_get_errno(int err)
{
return convert_wsa_error_to_errno(err);
}
/*
* redirected io subsystem for all XS modules
*
*/
DllExport int *
win32_errno(void)
{
return (&errno);
}
DllExport char ***
win32_environ(void)
{
return (&(_environ));
}
/* the rest are the remapped stdio routines */
DllExport FILE *
win32_stderr(void)
{
return (stderr);
}
DllExport FILE *
win32_stdin(void)
{
return (stdin);
}
DllExport FILE *
win32_stdout(void)
{
return (stdout);
}
DllExport int
win32_ferror(FILE *fp)
{
return (ferror(fp));
}
DllExport int
win32_feof(FILE *fp)
{
return (feof(fp));
}
#ifdef ERRNO_HAS_POSIX_SUPPLEMENT
extern int convert_errno_to_wsa_error(int err); /* in win32sck.c */
#endif
/*
* Since the errors returned by the socket error function
* WSAGetLastError() are not known by the library routine strerror
* we have to roll our own to cover the case of socket errors
* that could not be converted to regular errno values by
* get_last_socket_error() in win32/win32sck.c.
*/
DllExport char *
win32_strerror(int e)
{
#if !defined __MINGW32__ /* compiler intolerance */
extern int sys_nerr;
#endif
if (e < 0 || e > sys_nerr) {
dTHXa(NULL);
if (e < 0)
e = GetLastError();
#ifdef ERRNO_HAS_POSIX_SUPPLEMENT
/* VC10+ and some MinGW/gcc-4.8+ define a "POSIX supplement" of errno
* values ranging from EADDRINUSE (100) to EWOULDBLOCK (140), but
* sys_nerr is still 43 and strerror() returns "Unknown error" for them.
* We must therefore still roll our own messages for these codes, and
* additionally map them to corresponding Windows (sockets) error codes
* first to avoid getting the wrong system message.
*/
else if (inRANGE(e, EADDRINUSE, EWOULDBLOCK)) {
e = convert_errno_to_wsa_error(e);
}
#endif
aTHXa(PERL_GET_THX);
if (FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM
|FORMAT_MESSAGE_IGNORE_INSERTS, NULL, e, 0,
w32_strerror_buffer, sizeof(w32_strerror_buffer),
NULL) == 0)
{
strcpy(w32_strerror_buffer, "Unknown Error");
}
return w32_strerror_buffer;
}
#undef strerror
return strerror(e);
#define strerror win32_strerror
}
DllExport void
win32_str_os_error(void *sv, DWORD dwErr)
{
DWORD dwLen;
char *sMsg;
dwLen = FormatMessageA(FORMAT_MESSAGE_ALLOCATE_BUFFER
|FORMAT_MESSAGE_IGNORE_INSERTS
|FORMAT_MESSAGE_FROM_SYSTEM, NULL,
dwErr, 0, (char *)&sMsg, 1, NULL);
/* strip trailing whitespace and period */
if (0 < dwLen) {
do {
--dwLen; /* dwLen doesn't include trailing null */
} while (0 < dwLen && isSPACE(sMsg[dwLen]));
if ('.' != sMsg[dwLen])
dwLen++;
sMsg[dwLen] = '\0';
}
if (0 == dwLen) {
sMsg = (char*)LocalAlloc(0, 64/**sizeof(TCHAR)*/);
if (sMsg)
dwLen = sprintf(sMsg,
"Unknown error #0x%lX (lookup 0x%lX)",
dwErr, GetLastError());
}
if (sMsg) {
dTHX;
sv_setpvn((SV*)sv, sMsg, dwLen);
LocalFree(sMsg);
}
}
DllExport int
win32_fprintf(FILE *fp, const char *format, ...)
{
va_list marker;
va_start(marker, format); /* Initialize variable arguments. */
return (vfprintf(fp, format, marker));
}
DllExport int
win32_printf(const char *format, ...)
{
va_list marker;
va_start(marker, format); /* Initialize variable arguments. */
return (vprintf(format, marker));
}
DllExport int
win32_vfprintf(FILE *fp, const char *format, va_list args)
{
return (vfprintf(fp, format, args));
}
DllExport int
win32_vprintf(const char *format, va_list args)
{
return (vprintf(format, args));
}
DllExport size_t
win32_fread(void *buf, size_t size, size_t count, FILE *fp)
{
return fread(buf, size, count, fp);
}
DllExport size_t
win32_fwrite(const void *buf, size_t size, size_t count, FILE *fp)
{
return fwrite(buf, size, count, fp);
}
#define MODE_SIZE 10
DllExport FILE *
win32_fopen(const char *filename, const char *mode)
{
dTHXa(NULL);
FILE *f;
if (!*filename)
return NULL;
if (stricmp(filename, "/dev/null")==0)
filename = "NUL";
aTHXa(PERL_GET_THX);
f = fopen(PerlDir_mapA(filename), mode);
/* avoid buffering headaches for child processes */
if (f && *mode == 'a')
win32_fseek(f, 0, SEEK_END);
return f;
}
DllExport FILE *
win32_fdopen(int handle, const char *mode)
{
FILE *f;
f = fdopen(handle, (char *) mode);
/* avoid buffering headaches for child processes */
if (f && *mode == 'a')
win32_fseek(f, 0, SEEK_END);
return f;
}
DllExport FILE *
win32_freopen(const char *path, const char *mode, FILE *stream)
{
dTHXa(NULL);
if (stricmp(path, "/dev/null")==0)
path = "NUL";
aTHXa(PERL_GET_THX);
return freopen(PerlDir_mapA(path), mode, stream);
}
DllExport int
win32_fclose(FILE *pf)
{
return fclose(pf);
}
DllExport int
win32_fputs(const char *s,FILE *pf)
{
return fputs(s, pf);
}
DllExport int
win32_fputc(int c,FILE *pf)
{
return fputc(c,pf);
}
DllExport int
win32_ungetc(int c,FILE *pf)
{
return ungetc(c,pf);
}
DllExport int
win32_getc(FILE *pf)
{
return getc(pf);
}
DllExport int
win32_fileno(FILE *pf)
{
return fileno(pf);
}
DllExport void
win32_clearerr(FILE *pf)
{
clearerr(pf);
return;
}
DllExport int
win32_fflush(FILE *pf)
{
return fflush(pf);
}
DllExport Off_t
win32_ftell(FILE *pf)
{
fpos_t pos;
if (fgetpos(pf, &pos))
return -1;
return (Off_t)pos;
}
DllExport int
win32_fseek(FILE *pf, Off_t offset,int origin)
{
fpos_t pos;
switch (origin) {
case SEEK_CUR:
if (fgetpos(pf, &pos))
return -1;
offset += pos;
break;
case SEEK_END:
fseek(pf, 0, SEEK_END);
pos = _telli64(fileno(pf));
offset += pos;
break;
case SEEK_SET:
break;
default:
errno = EINVAL;
return -1;
}
return fsetpos(pf, &offset);
}
DllExport int
win32_fgetpos(FILE *pf,fpos_t *p)
{
return fgetpos(pf, p);
}
DllExport int
win32_fsetpos(FILE *pf,const fpos_t *p)
{
return fsetpos(pf, p);
}
DllExport void
win32_rewind(FILE *pf)
{
rewind(pf);
return;
}
DllExport int
win32_tmpfd(void)
{
return win32_tmpfd_mode(0);
}
DllExport int
win32_tmpfd_mode(int mode)
{
char prefix[MAX_PATH+1];
char filename[MAX_PATH+1];
DWORD len = GetTempPath(MAX_PATH, prefix);
mode &= ~( O_ACCMODE | O_CREAT | O_EXCL );
mode |= O_RDWR;
if (len && len < MAX_PATH) {
if (GetTempFileName(prefix, "plx", 0, filename)) {
HANDLE fh = CreateFile(filename,
DELETE | GENERIC_READ | GENERIC_WRITE,
0,
NULL,
CREATE_ALWAYS,
FILE_ATTRIBUTE_NORMAL
| FILE_FLAG_DELETE_ON_CLOSE,
NULL);
if (fh != INVALID_HANDLE_VALUE) {
int fd = win32_open_osfhandle((intptr_t)fh, mode);
if (fd >= 0) {
PERL_DEB(dTHX;)
DEBUG_p(PerlIO_printf(Perl_debug_log,
"Created tmpfile=%s\n",filename));
return fd;
}
}
}
}
return -1;
}
DllExport FILE*
win32_tmpfile(void)
{
int fd = win32_tmpfd();
if (fd >= 0)
return win32_fdopen(fd, "w+b");
return NULL;
}
DllExport void
win32_abort(void)
{
abort();
return;
}
DllExport int
win32_fstat(int fd, Stat_t *sbufptr)
{
HANDLE handle = (HANDLE)win32_get_osfhandle(fd);
return win32_stat_low(handle, NULL, 0, sbufptr, 0);
}
DllExport int
win32_pipe(int *pfd, unsigned int size, int mode)
{
return _pipe(pfd, size, mode);
}
DllExport PerlIO*
win32_popenlist(const char *mode, IV narg, SV **args)
{
if (get_shell() < 0)
return NULL;
return do_popen(mode, NULL, narg, args);
}
STATIC PerlIO*
do_popen(const char *mode, const char *command, IV narg, SV **args) {
int p[2];
int handles[3];
int parent, child;
int ourmode;
int childpid;
const char **args_pvs = NULL;
/* establish which ends read and write */
if (strchr(mode,'w')) {
parent = 1;
child = 0;
}
else if (strchr(mode,'r')) {
parent = 0;
child = 1;
}
else
return NULL;
/* set the correct mode */
if (strchr(mode,'b'))
ourmode = O_BINARY;
else if (strchr(mode,'t'))
ourmode = O_TEXT;
else
ourmode = _fmode & (O_TEXT | O_BINARY);
/* the child doesn't inherit handles */
ourmode |= O_NOINHERIT;
if (win32_pipe(p, 512, ourmode) == -1)
return NULL;
/* Previously this code redirected stdin/out temporarily so the
child process inherited those handles, this caused race
conditions when another thread was writing/reading those
handles.
To avoid that we just feed the handles to CreateProcess() so
the handles are redirected only in the child.
*/
handles[child] = p[child];
handles[parent] = -1;
handles[2] = -1;
/* CreateProcess() requires inheritable handles */
if (!SetHandleInformation((HANDLE)_get_osfhandle(p[child]), HANDLE_FLAG_INHERIT,
HANDLE_FLAG_INHERIT)) {
goto cleanup;
}
/* start the child */
{
dTHX;
if (command) {
if ((childpid = do_spawn2_handles(aTHX_ command, EXECF_SPAWN_NOWAIT, handles)) == -1)
goto cleanup;
}
else {
int i;
const char *exe_name;
Newx(args_pvs, narg + 1 + w32_perlshell_items, const char *);
SAVEFREEPV(args_pvs);
for (i = 0; i < narg; ++i)
args_pvs[i] = SvPV_nolen(args[i]);
args_pvs[i] = NULL;
exe_name = qualified_path(args_pvs[0], TRUE);
if (!exe_name)
/* let CreateProcess() try to find it instead */
exe_name = args_pvs[0];
if ((childpid = do_spawnvp_handles(P_NOWAIT, exe_name, args_pvs, handles)) == -1) {
goto cleanup;
}
}
win32_close(p[child]);
sv_setiv(*av_fetch(w32_fdpid, p[parent], TRUE), childpid);
/* set process id so that it can be returned by perl's open() */
PL_forkprocess = childpid;
}
/* we have an fd, return a file stream */
return (PerlIO_fdopen(p[parent], (char *)mode));
cleanup:
/* we don't need to check for errors here */
win32_close(p[0]);
win32_close(p[1]);
return (NULL);
}
/*
* a popen() clone that respects PERL5SHELL
*
* changed to return PerlIO* rather than FILE * by BKS, 11-11-2000
*/
DllExport PerlIO*
win32_popen(const char *command, const char *mode)
{
#ifdef USE_RTL_POPEN
return _popen(command, mode);
#else
return do_popen(mode, command, 0, NULL);
#endif /* USE_RTL_POPEN */
}
/*
* pclose() clone
*/
DllExport int
win32_pclose(PerlIO *pf)
{
#ifdef USE_RTL_POPEN
return _pclose(pf);
#else
dTHX;
int childpid, status;
SV *sv;
sv = *av_fetch(w32_fdpid, PerlIO_fileno(pf), TRUE);
if (SvIOK(sv))
childpid = SvIVX(sv);
else
childpid = 0;
if (!childpid) {
errno = EBADF;
return -1;
}
#ifdef USE_PERLIO
PerlIO_close(pf);
#else
fclose(pf);
#endif
SvIVX(sv) = 0;
if (win32_waitpid(childpid, &status, 0) == -1)
return -1;
return status;
#endif /* USE_RTL_POPEN */
}
/* wcscpy() arguments are restrict qualified, but if they're equal
we don't need to do the copy
*/
static inline WCHAR *
cond_wcsncpy(WCHAR *out, const WCHAR *in, size_t n) {
assert(wcslen(in) < n);
if (out != in)
wcsncpy(out, in, n);
return out;
}
DllExport int
win32_link(const char *oldname, const char *newname)
{
dTHXa(NULL);
WCHAR wOldName[MAX_PATH+1];
WCHAR wNewName[MAX_PATH+1];
if (MultiByteToWideChar(CP_ACP, 0, oldname, -1, wOldName, MAX_PATH+1) &&
MultiByteToWideChar(CP_ACP, 0, newname, -1, wNewName, MAX_PATH+1) &&
((aTHXa(PERL_GET_THX)),
cond_wcsncpy(wOldName, PerlDir_mapW(wOldName), C_ARRAY_LENGTH(wOldName)),
CreateHardLinkW(PerlDir_mapW(wNewName), wOldName, NULL)))
{
return 0;
}
translate_to_errno();
return -1;
}
typedef BOOLEAN (__stdcall *pCreateSymbolicLinkA_t)(LPCSTR, LPCSTR, DWORD);
#ifndef SYMBOLIC_LINK_FLAG_DIRECTORY
# define SYMBOLIC_LINK_FLAG_DIRECTORY 0x1
#endif
#ifndef SYMBOLIC_LINK_FLAG_ALLOW_UNPRIVILEGED_CREATE
# define SYMBOLIC_LINK_FLAG_ALLOW_UNPRIVILEGED_CREATE 0x2
#endif
DllExport int
win32_symlink(const char *oldfile, const char *newfile)
{
dTHX;
size_t oldfile_len = strlen(oldfile);
GCC_DIAG_IGNORE_DECL(-Wcast-function-type);
pCreateSymbolicLinkA_t pCreateSymbolicLinkA =
(pCreateSymbolicLinkA_t)GetProcAddress(GetModuleHandle("kernel32.dll"), "CreateSymbolicLinkA");
GCC_DIAG_RESTORE_DECL;
DWORD create_flags = 0;
/* this flag can be used only on Windows 10 1703 or newer */
if (g_osver.dwMajorVersion > 10 ||
(g_osver.dwMajorVersion == 10 &&
(g_osver.dwMinorVersion > 0 || g_osver.dwBuildNumber > 15063)))
{
create_flags |= SYMBOLIC_LINK_FLAG_ALLOW_UNPRIVILEGED_CREATE;
}
if (!pCreateSymbolicLinkA) {
errno = ENOSYS;
return -1;
}
/* oldfile might be relative and we don't want to change that,
so don't map that.
*/
newfile = PerlDir_mapA(newfile);
if (strchr(oldfile, '/')) {
/* Win32 (or perhaps NTFS) won't follow symlinks containing
/, so replace any with \\
*/
char *temp = savepv(oldfile);
SAVEFREEPV(temp);
char *p = temp;
while (*p) {
if (*p == '/') {
*p = '\\';
}
++p;
}
*p = 0;
oldfile = temp;
oldfile_len = p - temp;
}
/* are we linking to a directory?
CreateSymlinkA() needs to know if the target is a directory,
If it looks like a directory name:
- ends in slash
- is just . or ..
- ends in /. or /.. (with either slash)
- is a simple drive letter
assume it's a directory.
Otherwise if the oldfile is relative we need to make a relative path
based on the newfile to check if the target is a directory.
*/
if ((oldfile_len >= 1 && isSLASH(oldfile[oldfile_len-1])) ||
strEQ(oldfile, "..") ||
strEQ(oldfile, ".") ||
(isSLASH(oldfile[oldfile_len-2]) && oldfile[oldfile_len-1] == '.') ||
strEQ(oldfile+oldfile_len-3, "\\..") ||
(oldfile_len == 2 && oldfile[1] == ':')) {
create_flags |= SYMBOLIC_LINK_FLAG_DIRECTORY;
}
else {
DWORD dest_attr;
const char *dest_path = oldfile;
char szTargetName[MAX_PATH+1];
if (oldfile_len >= 3 && oldfile[1] == ':') {
/* relative to current directory on a drive, or absolute */
/* dest_path = oldfile; already done */
}
else if (oldfile[0] != '\\') {
const char *last_slash = strrchr(newfile, '/');
const char *last_bslash = strrchr(newfile, '\\');
const char *end_dir = last_slash && last_bslash
? ( last_slash > last_bslash ? last_slash : last_bslash)
: last_slash ? last_slash : last_bslash ? last_bslash : NULL;
if (end_dir) {
if ((end_dir - newfile + 1) + oldfile_len > MAX_PATH) {
/* too long */
errno = EINVAL;
return -1;
}
memcpy(szTargetName, newfile, end_dir - newfile + 1);
strcpy(szTargetName + (end_dir - newfile + 1), oldfile);
dest_path = szTargetName;
}
else {
/* newpath is just a filename */
/* dest_path = oldfile; */
}
}
dest_attr = GetFileAttributes(dest_path);
if (dest_attr != (DWORD)-1 && (dest_attr & FILE_ATTRIBUTE_DIRECTORY)) {
create_flags |= SYMBOLIC_LINK_FLAG_DIRECTORY;
}
}
if (!pCreateSymbolicLinkA(newfile, oldfile, create_flags)) {
translate_to_errno();
return -1;
}
return 0;
}
DllExport int
win32_rename(const char *oname, const char *newname)
{
char szOldName[MAX_PATH+1];
BOOL bResult;
DWORD dwFlags = MOVEFILE_COPY_ALLOWED;
dTHX;
if (stricmp(newname, oname))
dwFlags |= MOVEFILE_REPLACE_EXISTING;
strcpy(szOldName, PerlDir_mapA(oname));
bResult = MoveFileExA(szOldName,PerlDir_mapA(newname), dwFlags);
if (!bResult) {
DWORD err = GetLastError();
switch (err) {
case ERROR_BAD_NET_NAME:
case ERROR_BAD_NETPATH:
case ERROR_BAD_PATHNAME:
case ERROR_FILE_NOT_FOUND:
case ERROR_FILENAME_EXCED_RANGE:
case ERROR_INVALID_DRIVE:
case ERROR_NO_MORE_FILES:
case ERROR_PATH_NOT_FOUND:
errno = ENOENT;
break;
case ERROR_DISK_FULL:
errno = ENOSPC;
break;
case ERROR_NOT_ENOUGH_QUOTA:
errno = EDQUOT;
break;
default:
errno = EACCES;
break;
}
return -1;
}
return 0;
}
DllExport int
win32_setmode(int fd, int mode)
{
return setmode(fd, mode);
}
DllExport int
win32_chsize(int fd, Off_t size)
{
int retval = 0;
Off_t cur, end, extend;
cur = win32_tell(fd);
if (cur < 0)
return -1;
end = win32_lseek(fd, 0, SEEK_END);
if (end < 0)
return -1;
extend = size - end;
if (extend == 0) {
/* do nothing */
}
else if (extend > 0) {
/* must grow the file, padding with nulls */
char b[4096];
int oldmode = win32_setmode(fd, O_BINARY);
Off_t count;
memset(b, '\0', sizeof(b));
do {
/* Casts to 'Off_t' avoid '[-Wsign-compare]' warning */
count = extend >= (Off_t)sizeof(b) ? (Off_t)sizeof(b) : extend;
count = win32_write(fd, b, count);
if ((int)count < 0) {
retval = -1;
break;
}
} while ((extend -= count) > 0);
win32_setmode(fd, oldmode);
}
else {
/* shrink the file */
win32_lseek(fd, size, SEEK_SET);
if (!SetEndOfFile((HANDLE)_get_osfhandle(fd))) {
errno = EACCES;
retval = -1;
}
}
win32_lseek(fd, cur, SEEK_SET);
return retval;
}
DllExport Off_t
win32_lseek(int fd, Off_t offset, int origin)
{
return _lseeki64(fd, offset, origin);
}
DllExport Off_t
win32_tell(int fd)
{
return _telli64(fd);
}
DllExport int
win32_open(const char *path, int flag, ...)
{
dTHXa(NULL);
va_list ap;
int pmode;
va_start(ap, flag);
pmode = va_arg(ap, int);
va_end(ap);
if (stricmp(path, "/dev/null")==0)
path = "NUL";
aTHXa(PERL_GET_THX);
return open(PerlDir_mapA(path), flag, pmode);
}
DllExport int
win32_close(int fd)
{
return _close(fd);
}
DllExport int
win32_eof(int fd)
{
return eof(fd);
}
DllExport int
win32_isatty(int fd)
{
/* The Microsoft isatty() function returns true for *all*
* character mode devices, including "nul". Our implementation
* should only return true if the handle has a console buffer.
*/
DWORD mode;
HANDLE fh = (HANDLE)_get_osfhandle(fd);
if (fh == (HANDLE)-1) {
/* errno is already set to EBADF */
return 0;
}
if (GetConsoleMode(fh, &mode))
return 1;
errno = ENOTTY;
return 0;
}
DllExport int
win32_dup(int fd)
{
return dup(fd);
}
DllExport int
win32_dup2(int fd1,int fd2)
{
return dup2(fd1,fd2);
}
static int
win32_read_console(int fd, U8 *buf, unsigned int cnt)
{
/* This function is a workaround for a bug in Windows:
* https://github.com/microsoft/terminal/issues/4551
* tl;dr: ReadFile() and ReadConsoleA() return garbage when reading
* non-ASCII characters from the console with the 65001 codepage.
*/
HANDLE h = (HANDLE)_get_osfhandle(fd);
size_t left_to_read = cnt;
DWORD mode;
if (h == INVALID_HANDLE_VALUE) {
errno = EBADF;
return -1;
}
if (!GetConsoleMode(h, &mode)) {
translate_to_errno();
return -1;
}
while (left_to_read) {
/* The purpose of converted_buf is to preserve partial UTF-8 (or of any
* other multibyte encoding) code points between read() calls. Since
* there's only one console, the buffer is global. It's needed because
* ReadConsoleW() returns a string of UTF-16 code units and its result,
* after conversion to the current console codepage, may not fit in the
* return buffer.
*
* The buffer's size is 8 because it will contain at most two UTF-8 code
* points.
*/
static char converted_buf[8];
static size_t converted_buf_len = 0;
WCHAR wbuf[2];
DWORD wbuf_len = 0, chars_read;
if (converted_buf_len) {
bool newline = 0;
size_t to_write = MIN(converted_buf_len, left_to_read);
/* Don't read anything if the *first* character is ^Z and
* ENABLE_PROCESSED_INPUT is enabled. On some versions of Windows,
* ReadFile() ignores ENABLE_PROCESSED_INPUT, but apparently it's a
* bug: https://github.com/microsoft/terminal/issues/4958
*/
if (left_to_read == cnt && (mode & ENABLE_PROCESSED_INPUT) &&
converted_buf[0] == 0x1a)
break;
/* Are we returning a newline? */
if (memchr(converted_buf, '\n', to_write))
newline = 1;
memcpy(buf, converted_buf, to_write);
buf += to_write;
/* If there's anything left in converted_buf, move it to the
* beginning of the buffer. */
converted_buf_len -= to_write;
if (converted_buf_len)
memmove(
converted_buf, converted_buf + to_write, converted_buf_len
);
left_to_read -= to_write;
/* With ENABLE_LINE_INPUT enabled, we stop reading after the first
* newline, otherwise we stop reading after the first character. */
if (!left_to_read || newline || (mode & ENABLE_LINE_INPUT) == 0)
break;
}
/* Reading one code unit at a time is inefficient, but since this code
* is used only for the interactive console, that shouldn't matter. */
if (!ReadConsoleW(h, wbuf, 1, &chars_read, 0)) {
translate_to_errno();
return -1;
}
if (!chars_read)
break;
++wbuf_len;
if (wbuf[0] >= 0xD800 && wbuf[0] <= 0xDBFF) {
/* High surrogate, read one more code unit. */
if (!ReadConsoleW(h, wbuf + 1, 1, &chars_read, 0)) {
translate_to_errno();
return -1;
}
if (chars_read)
++wbuf_len;
}
converted_buf_len = WideCharToMultiByte(
GetConsoleCP(), 0, wbuf, wbuf_len, converted_buf,
sizeof(converted_buf), NULL, NULL
);
if (!converted_buf_len) {
translate_to_errno();
return -1;
}
}
return cnt - left_to_read;
}
DllExport int
win32_read(int fd, void *buf, unsigned int cnt)
{
int ret;
if (UNLIKELY(win32_isatty(fd) && GetConsoleCP() == 65001)) {
MUTEX_LOCK(&win32_read_console_mutex);
ret = win32_read_console(fd, (U8 *)buf, cnt);
MUTEX_UNLOCK(&win32_read_console_mutex);
}
else
ret = read(fd, buf, cnt);
return ret;
}
DllExport int
win32_write(int fd, const void *buf, unsigned int cnt)
{
return write(fd, buf, cnt);
}
DllExport int
win32_mkdir(const char *dir, int mode)
{
dTHX;
PERL_UNUSED_ARG(mode);
return mkdir(PerlDir_mapA(dir)); /* just ignore mode */
}
DllExport int
win32_rmdir(const char *dir)
{
dTHX;
return rmdir(PerlDir_mapA(dir));
}
DllExport int
win32_chdir(const char *dir)
{
if (!dir || !*dir) {
errno = ENOENT;
return -1;
}
return chdir(dir);
}
DllExport int
win32_access(const char *path, int mode)
{
dTHX;
return access(PerlDir_mapA(path), mode);
}
DllExport int
win32_chmod(const char *path, int mode)
{
dTHX;
return chmod(PerlDir_mapA(path), mode);
}
static char *
create_command_line(char *cname, STRLEN clen, const char * const *args)
{
PERL_DEB(dTHX;)
int index;
char *cmd, *ptr;
const char *arg;
STRLEN len = 0;
bool bat_file = FALSE;
bool cmd_shell = FALSE;
bool dumb_shell = FALSE;
bool extra_quotes = FALSE;
bool quote_next = FALSE;
if (!cname)
cname = (char*)args[0];
/* The NT cmd.exe shell has the following peculiarity that needs to be
* worked around. It strips a leading and trailing dquote when any
* of the following is true:
* 1. the /S switch was used
* 2. there are more than two dquotes
* 3. there is a special character from this set: &<>()@^|
* 4. no whitespace characters within the two dquotes
* 5. string between two dquotes isn't an executable file
* To work around this, we always add a leading and trailing dquote
* to the string, if the first argument is either "cmd.exe" or "cmd",
* and there were at least two or more arguments passed to cmd.exe
* (not including switches).
* XXX the above rules (from "cmd /?") don't seem to be applied
* always, making for the convolutions below :-(
*/
if (cname) {
if (!clen)
clen = strlen(cname);
if (clen > 4
&& (stricmp(&cname[clen-4], ".bat") == 0
|| (stricmp(&cname[clen-4], ".cmd") == 0)))
{
bat_file = TRUE;
len += 3;
}
else {
char *exe = strrchr(cname, '/');
char *exe2 = strrchr(cname, '\\');
if (exe2 > exe)
exe = exe2;
if (exe)
++exe;
else
exe = cname;
if (stricmp(exe, "cmd.exe") == 0 || stricmp(exe, "cmd") == 0) {
cmd_shell = TRUE;
len += 3;
}
else if (stricmp(exe, "command.com") == 0
|| stricmp(exe, "command") == 0)
{
dumb_shell = TRUE;
}
}
}
DEBUG_p(PerlIO_printf(Perl_debug_log, "Args "));
for (index = 0; (arg = (char*)args[index]) != NULL; ++index) {
STRLEN curlen = strlen(arg);
if (!(arg[0] == '"' && arg[curlen-1] == '"'))
len += 2; /* assume quoting needed (worst case) */
len += curlen + 1;
DEBUG_p(PerlIO_printf(Perl_debug_log, "[%s]",arg));
}
DEBUG_p(PerlIO_printf(Perl_debug_log, "\n"));
Newx(cmd, len, char);
ptr = cmd;
if (bat_file) {
*ptr++ = '"';
extra_quotes = TRUE;
}
for (index = 0; (arg = (char*)args[index]) != NULL; ++index) {
bool do_quote = 0;
STRLEN curlen = strlen(arg);
/* we want to protect empty arguments and ones with spaces with
* dquotes, but only if they aren't already there */
if (!dumb_shell) {
if (!curlen) {
do_quote = 1;
}
else if (quote_next) {
/* see if it really is multiple arguments pretending to
* be one and force a set of quotes around it */
if (*find_next_space(arg))
do_quote = 1;
}
else if (!(arg[0] == '"' && curlen > 1 && arg[curlen-1] == '"')) {
STRLEN i = 0;
while (i < curlen) {
if (isSPACE(arg[i])) {
do_quote = 1;
}
else if (arg[i] == '"') {
do_quote = 0;
break;
}
i++;
}
}
}
if (do_quote)
*ptr++ = '"';
strcpy(ptr, arg);
ptr += curlen;
if (do_quote)
*ptr++ = '"';
if (args[index+1])
*ptr++ = ' ';
if (!extra_quotes
&& cmd_shell
&& curlen >= 2
&& *arg == '/' /* see if arg is "/c", "/x/c", "/x/d/c" etc. */
&& stricmp(arg+curlen-2, "/c") == 0)
{
/* is there a next argument? */
if (args[index+1]) {
/* are there two or more next arguments? */
if (args[index+2]) {
*ptr++ = '"';
extra_quotes = TRUE;
}
else {
/* single argument, force quoting if it has spaces */
quote_next = TRUE;
}
}
}
}
if (extra_quotes)
*ptr++ = '"';
*ptr = '\0';
return cmd;
}
static const char *exe_extensions[] =
{
".exe", /* this must be first */
".cmd",
".bat"
};
static char *
qualified_path(const char *cmd, bool other_exts)
{
char *pathstr;
char *fullcmd, *curfullcmd;
STRLEN cmdlen = 0;
int has_slash = 0;
if (!cmd)
return NULL;
fullcmd = (char*)cmd;
while (*fullcmd) {
if (*fullcmd == '/' || *fullcmd == '\\')
has_slash++;
fullcmd++;
cmdlen++;
}
/* look in PATH */
{
dTHX;
pathstr = PerlEnv_getenv("PATH");
}
/* worst case: PATH is a single directory; we need additional space
* to append "/", ".exe" and trailing "\0" */
Newx(fullcmd, (pathstr ? strlen(pathstr) : 0) + cmdlen + 6, char);
curfullcmd = fullcmd;
while (1) {
DWORD res;
/* start by appending the name to the current prefix */
strcpy(curfullcmd, cmd);
curfullcmd += cmdlen;
/* if it doesn't end with '.', or has no extension, try adding
* a trailing .exe first */
if (cmd[cmdlen-1] != '.'
&& (cmdlen < 4 || cmd[cmdlen-4] != '.'))
{
int i;
/* first extension is .exe */
int ext_limit = other_exts ? C_ARRAY_LENGTH(exe_extensions) : 1;
for (i = 0; i < ext_limit; ++i) {
strcpy(curfullcmd, exe_extensions[i]);
res = GetFileAttributes(fullcmd);
if (res != 0xFFFFFFFF && !(res & FILE_ATTRIBUTE_DIRECTORY))
return fullcmd;
}
*curfullcmd = '\0';
}
/* that failed, try the bare name */
res = GetFileAttributes(fullcmd);
if (res != 0xFFFFFFFF && !(res & FILE_ATTRIBUTE_DIRECTORY))
return fullcmd;
/* quit if no other path exists, or if cmd already has path */
if (!pathstr || !*pathstr || has_slash)
break;
/* skip leading semis */
while (*pathstr == ';')
pathstr++;
/* build a new prefix from scratch */
curfullcmd = fullcmd;
while (*pathstr && *pathstr != ';') {
if (*pathstr == '"') { /* foo;"baz;etc";bar */
pathstr++; /* skip initial '"' */
while (*pathstr && *pathstr != '"') {
*curfullcmd++ = *pathstr++;
}
if (*pathstr)
pathstr++; /* skip trailing '"' */
}
else {
*curfullcmd++ = *pathstr++;
}
}
if (*pathstr)
pathstr++; /* skip trailing semi */
if (curfullcmd > fullcmd /* append a dir separator */
&& curfullcmd[-1] != '/' && curfullcmd[-1] != '\\')
{
*curfullcmd++ = '\\';
}
}
Safefree(fullcmd);
return NULL;
}
/* The following are just place holders.
* Some hosts may provide and environment that the OS is
* not tracking, therefore, these host must provide that
* environment and the current directory to CreateProcess
*/
DllExport void*
win32_get_childenv(void)
{
return NULL;
}
DllExport void
win32_free_childenv(void* d)
{
PERL_UNUSED_ARG(d);
}
DllExport void
win32_clearenv(void)
{
char *envv = GetEnvironmentStrings();
char *cur = envv;
STRLEN len;
while (*cur) {
char *end = strchr(cur,'=');
if (end && end != cur) {
*end = '\0';
SetEnvironmentVariable(cur, NULL);
*end = '=';
cur = end + strlen(end+1)+2;
}
else if ((len = strlen(cur)))
cur += len+1;
}
FreeEnvironmentStrings(envv);
}
DllExport char*
win32_get_childdir(void)
{
char* ptr;
char szfilename[MAX_PATH+1];
GetCurrentDirectoryA(MAX_PATH+1, szfilename);
Newx(ptr, strlen(szfilename)+1, char);
strcpy(ptr, szfilename);
return ptr;
}
DllExport void
win32_free_childdir(char* d)
{
Safefree(d);
}
/* XXX this needs to be made more compatible with the spawnvp()
* provided by the various RTLs. In particular, searching for
* *.{com,bat,cmd} files (as done by the RTLs) is unimplemented.
* This doesn't significantly affect perl itself, because we
* always invoke things using PERL5SHELL if a direct attempt to
* spawn the executable fails.
*
* XXX splitting and rejoining the commandline between do_aspawn()
* and win32_spawnvp() could also be avoided.
*/
DllExport int
win32_spawnvp(int mode, const char *cmdname, const char *const *argv)
{
#ifdef USE_RTL_SPAWNVP
return _spawnvp(mode, cmdname, (char * const *)argv);
#else
return do_spawnvp_handles(mode, cmdname, argv, NULL);
#endif
}
static int
do_spawnvp_handles(int mode, const char *cmdname, const char *const *argv,
const int *handles) {
dTHXa(NULL);
int ret;
void* env;
char* dir;
child_IO_table tbl;
STARTUPINFO StartupInfo;
PROCESS_INFORMATION ProcessInformation;
DWORD create = 0;
char *cmd;
char *fullcmd = NULL;
char *cname = (char *)cmdname;
STRLEN clen = 0;
if (cname) {
clen = strlen(cname);
/* if command name contains dquotes, must remove them */
if (strchr(cname, '"')) {
cmd = cname;
Newx(cname,clen+1,char);
clen = 0;
while (*cmd) {
if (*cmd != '"') {
cname[clen] = *cmd;
++clen;
}
++cmd;
}
cname[clen] = '\0';
}
}
cmd = create_command_line(cname, clen, argv);
aTHXa(PERL_GET_THX);
env = PerlEnv_get_childenv();
dir = PerlEnv_get_childdir();
switch(mode) {
case P_NOWAIT: /* asynch + remember result */
if (w32_num_children >= MAXIMUM_WAIT_OBJECTS) {
errno = EAGAIN;
ret = -1;
goto RETVAL;
}
/* Create a new process group so we can use GenerateConsoleCtrlEvent()
* in win32_kill()
*/
create |= CREATE_NEW_PROCESS_GROUP;
/* FALL THROUGH */
case P_WAIT: /* synchronous execution */
break;
default: /* invalid mode */
errno = EINVAL;
ret = -1;
goto RETVAL;
}
memset(&StartupInfo,0,sizeof(StartupInfo));
StartupInfo.cb = sizeof(StartupInfo);
memset(&tbl,0,sizeof(tbl));
PerlEnv_get_child_IO(&tbl);
StartupInfo.dwFlags = tbl.dwFlags;
StartupInfo.dwX = tbl.dwX;
StartupInfo.dwY = tbl.dwY;
StartupInfo.dwXSize = tbl.dwXSize;
StartupInfo.dwYSize = tbl.dwYSize;
StartupInfo.dwXCountChars = tbl.dwXCountChars;
StartupInfo.dwYCountChars = tbl.dwYCountChars;
StartupInfo.dwFillAttribute = tbl.dwFillAttribute;
StartupInfo.wShowWindow = tbl.wShowWindow;
StartupInfo.hStdInput = handles && handles[0] != -1 ?
(HANDLE)_get_osfhandle(handles[0]) : tbl.childStdIn;
StartupInfo.hStdOutput = handles && handles[1] != -1 ?
(HANDLE)_get_osfhandle(handles[1]) : tbl.childStdOut;
StartupInfo.hStdError = handles && handles[2] != -1 ?
(HANDLE)_get_osfhandle(handles[2]) : tbl.childStdErr;
if (StartupInfo.hStdInput == INVALID_HANDLE_VALUE &&
StartupInfo.hStdOutput == INVALID_HANDLE_VALUE &&
StartupInfo.hStdError == INVALID_HANDLE_VALUE)
{
create |= CREATE_NEW_CONSOLE;
}
else {
StartupInfo.dwFlags |= STARTF_USESTDHANDLES;
}
if (w32_use_showwindow) {
StartupInfo.dwFlags |= STARTF_USESHOWWINDOW;
StartupInfo.wShowWindow = w32_showwindow;
}
DEBUG_p(PerlIO_printf(Perl_debug_log, "Spawning [%s] with [%s]\n",
cname,cmd));
RETRY:
if (!CreateProcess(cname, /* search PATH to find executable */
cmd, /* executable, and its arguments */
NULL, /* process attributes */
NULL, /* thread attributes */
TRUE, /* inherit handles */
create, /* creation flags */
(LPVOID)env, /* inherit environment */
dir, /* inherit cwd */
&StartupInfo,
&ProcessInformation))
{
/* initial NULL argument to CreateProcess() does a PATH
* search, but it always first looks in the directory
* where the current process was started, which behavior
* is undesirable for backward compatibility. So we
* jump through our own hoops by picking out the path
* we really want it to use. */
if (!fullcmd) {
fullcmd = qualified_path(cname, FALSE);
if (fullcmd) {
if (cname != cmdname)
Safefree(cname);
cname = fullcmd;
DEBUG_p(PerlIO_printf(Perl_debug_log,
"Retrying [%s] with same args\n",
cname));
goto RETRY;
}
}
errno = ENOENT;
ret = -1;
goto RETVAL;
}
if (mode == P_NOWAIT) {
/* asynchronous spawn -- store handle, return PID */
ret = (int)ProcessInformation.dwProcessId;
w32_child_handles[w32_num_children] = ProcessInformation.hProcess;
w32_child_pids[w32_num_children] = (DWORD)ret;
++w32_num_children;
}
else {
DWORD status;
win32_msgwait(aTHX_ 1, &ProcessInformation.hProcess, INFINITE, NULL);
/* FIXME: if msgwait returned due to message perhaps forward the
"signal" to the process
*/
GetExitCodeProcess(ProcessInformation.hProcess, &status);
ret = (int)status;
CloseHandle(ProcessInformation.hProcess);
}
CloseHandle(ProcessInformation.hThread);
RETVAL:
PerlEnv_free_childenv(env);
PerlEnv_free_childdir(dir);
Safefree(cmd);
if (cname != cmdname)
Safefree(cname);
return ret;
}
DllExport int
win32_execv(const char *cmdname, const char *const *argv)
{
#ifdef USE_ITHREADS
dTHX;
/* if this is a pseudo-forked child, we just want to spawn
* the new program, and return */
if (w32_pseudo_id)
return _spawnv(P_WAIT, cmdname, argv);
#endif
return _execv(cmdname, argv);
}
DllExport int
win32_execvp(const char *cmdname, const char *const *argv)
{
#ifdef USE_ITHREADS
dTHX;
/* if this is a pseudo-forked child, we just want to spawn
* the new program, and return */
if (w32_pseudo_id) {
int status = win32_spawnvp(P_WAIT, cmdname, (const char *const *)argv);
if (status != -1) {
my_exit(status);
return 0;
}
else
return status;
}
#endif
return _execvp(cmdname, argv);
}
DllExport void
win32_perror(const char *str)
{
perror(str);
}
DllExport void
win32_setbuf(FILE *pf, char *buf)
{
setbuf(pf, buf);
}
DllExport int
win32_setvbuf(FILE *pf, char *buf, int type, size_t size)
{
return setvbuf(pf, buf, type, size);
}
DllExport int
win32_flushall(void)
{
return flushall();
}
DllExport int
win32_fcloseall(void)
{
return fcloseall();
}
DllExport char*
win32_fgets(char *s, int n, FILE *pf)
{
return fgets(s, n, pf);
}
DllExport char*
win32_gets(char *s)
{
GCC_DIAG_IGNORE_STMT(-Wattribute-warning); /* gets() only for compat */
return gets(s);
GCC_DIAG_RESTORE_STMT;
}
DllExport int
win32_fgetc(FILE *pf)
{
return fgetc(pf);
}
DllExport int
win32_putc(int c, FILE *pf)
{
return putc(c,pf);
}
DllExport int
win32_puts(const char *s)
{
return puts(s);
}
DllExport int
win32_getchar(void)
{
return getchar();
}
DllExport int
win32_putchar(int c)
{
return putchar(c);
}
#ifdef MYMALLOC
#ifndef USE_PERL_SBRK
static char *committed = NULL; /* XXX threadead */
static char *base = NULL; /* XXX threadead */
static char *reserved = NULL; /* XXX threadead */
static char *brk = NULL; /* XXX threadead */
static DWORD pagesize = 0; /* XXX threadead */
void *
sbrk(ptrdiff_t need)
{
void *result;
if (!pagesize)
{SYSTEM_INFO info;
GetSystemInfo(&info);
/* Pretend page size is larger so we don't perpetually
* call the OS to commit just one page ...
*/
pagesize = info.dwPageSize << 3;
}
if (brk+need >= reserved)
{
DWORD size = brk+need-reserved;
char *addr;
char *prev_committed = NULL;
if (committed && reserved && committed < reserved)
{
/* Commit last of previous chunk cannot span allocations */
addr = (char *) VirtualAlloc(committed,reserved-committed,MEM_COMMIT,PAGE_READWRITE);
if (addr)
{
/* Remember where we committed from in case we want to decommit later */
prev_committed = committed;
committed = reserved;
}
}
/* Reserve some (more) space
* Contiguous blocks give us greater efficiency, so reserve big blocks -
* this is only address space not memory...
* Note this is a little sneaky, 1st call passes NULL as reserved
* so lets system choose where we start, subsequent calls pass
* the old end address so ask for a contiguous block
*/
sbrk_reserve:
if (size < 64*1024*1024)
size = 64*1024*1024;
size = ((size + pagesize - 1) / pagesize) * pagesize;
addr = (char *) VirtualAlloc(reserved,size,MEM_RESERVE,PAGE_NOACCESS);
if (addr)
{
reserved = addr+size;
if (!base)
base = addr;
if (!committed)
committed = base;
if (!brk)
brk = committed;
}
else if (reserved)
{
/* The existing block could not be extended far enough, so decommit
* anything that was just committed above and start anew */
if (prev_committed)
{
if (!VirtualFree(prev_committed,reserved-prev_committed,MEM_DECOMMIT))
return (void *) -1;
}
reserved = base = committed = brk = NULL;
size = need;
goto sbrk_reserve;
}
else
{
return (void *) -1;
}
}
result = brk;
brk += need;
if (brk > committed)
{
DWORD size = ((brk-committed + pagesize -1)/pagesize) * pagesize;
char *addr;
if (committed+size > reserved)
size = reserved-committed;
addr = (char *) VirtualAlloc(committed,size,MEM_COMMIT,PAGE_READWRITE);
if (addr)
committed += size;
else
return (void *) -1;
}
return result;
}
#endif
#endif
DllExport void*
win32_malloc(size_t size)
{
return malloc(size);
}
DllExport void*
win32_calloc(size_t numitems, size_t size)
{
return calloc(numitems,size);
}
DllExport void*
win32_realloc(void *block, size_t size)
{
return realloc(block,size);
}
DllExport void
win32_free(void *block)
{
free(block);
}
DllExport int
win32_open_osfhandle(intptr_t handle, int flags)
{
return _open_osfhandle(handle, flags);
}
DllExport intptr_t
win32_get_osfhandle(int fd)
{
return (intptr_t)_get_osfhandle(fd);
}
DllExport FILE *
win32_fdupopen(FILE *pf)
{
FILE* pfdup;
fpos_t pos;
char mode[3];
int fileno = win32_dup(win32_fileno(pf));
/* open the file in the same mode */
if (PERLIO_FILE_flag(pf) & PERLIO_FILE_flag_RD) {
mode[0] = 'r';
mode[1] = 0;
}
else if (PERLIO_FILE_flag(pf) & PERLIO_FILE_flag_WR) {
mode[0] = 'a';
mode[1] = 0;
}
else if (PERLIO_FILE_flag(pf) & PERLIO_FILE_flag_RW) {
mode[0] = 'r';
mode[1] = '+';
mode[2] = 0;
}
/* it appears that the binmode is attached to the
* file descriptor so binmode files will be handled
* correctly
*/
pfdup = win32_fdopen(fileno, mode);
/* move the file pointer to the same position */
if (!fgetpos(pf, &pos)) {
fsetpos(pfdup, &pos);
}
return pfdup;
}
DllExport void*
win32_dynaload(const char* filename)
{
dTHXa(NULL);
char buf[MAX_PATH+1];
const char *first;
/* LoadLibrary() doesn't recognize forward slashes correctly,
* so turn 'em back. */
first = strchr(filename, '/');
if (first) {
STRLEN len = strlen(filename);
if (len <= MAX_PATH) {
strcpy(buf, filename);
filename = &buf[first - filename];
while (*filename) {
if (*filename == '/')
*(char*)filename = '\\';
++filename;
}
filename = buf;
}
}
aTHXa(PERL_GET_THX);
return LoadLibraryExA(PerlDir_mapA(filename), NULL, LOAD_WITH_ALTERED_SEARCH_PATH);
}
XS(w32_SetChildShowWindow)
{
dXSARGS;
BOOL use_showwindow = w32_use_showwindow;
/* use "unsigned short" because Perl has redefined "WORD" */
unsigned short showwindow = w32_showwindow;
if (items > 1)
croak_xs_usage(cv, "[showwindow]");
if (items == 0 || !SvOK(ST(0)))
w32_use_showwindow = FALSE;
else {
w32_use_showwindow = TRUE;
w32_showwindow = (unsigned short)SvIV(ST(0));
}
EXTEND(SP, 1);
if (use_showwindow)
ST(0) = sv_2mortal(newSViv(showwindow));
else
ST(0) = &PL_sv_undef;
XSRETURN(1);
}
#ifdef PERL_IS_MINIPERL
/* shelling out is much slower, full perl uses Win32.pm */
XS(w32_GetCwd)
{
dXSARGS;
PERL_UNUSED_VAR(items);
/* Make the host for current directory */
char* ptr = PerlEnv_get_childdir();
/*
* If ptr != Nullch
* then it worked, set PV valid,
* else return 'undef'
*/
if (ptr) {
SV *sv = sv_newmortal();
sv_setpv(sv, ptr);
PerlEnv_free_childdir(ptr);
#ifndef INCOMPLETE_TAINTS
SvTAINTED_on(sv);
#endif
ST(0) = sv;
XSRETURN(1);
}
XSRETURN_UNDEF;
}
#endif
void
Perl_init_os_extras(void)
{
dTHXa(NULL);
const char *file = __FILE__;
/* Initialize Win32CORE if it has been statically linked. */
#ifndef PERL_IS_MINIPERL
void (*pfn_init)(pTHX);
HMODULE module = (HMODULE)((w32_perldll_handle == INVALID_HANDLE_VALUE)
? GetModuleHandle(NULL)
: w32_perldll_handle);
GCC_DIAG_IGNORE_DECL(-Wcast-function-type);
pfn_init = (void (*)(pTHX))GetProcAddress(module, "init_Win32CORE");
GCC_DIAG_RESTORE_DECL;
aTHXa(PERL_GET_THX);
if (pfn_init)
pfn_init(aTHX);
#else
aTHXa(PERL_GET_THX);
#endif
newXS("Win32::SetChildShowWindow", w32_SetChildShowWindow, file);
#ifdef PERL_IS_MINIPERL
newXS("Win32::GetCwd", w32_GetCwd, file);
#endif
}
void *
win32_signal_context(void)
{
dTHX;
#ifdef MULTIPLICITY
if (!my_perl) {
my_perl = PL_curinterp;
PERL_SET_THX(my_perl);
}
return my_perl;
#else
return PL_curinterp;
#endif
}
BOOL WINAPI
win32_ctrlhandler(DWORD dwCtrlType)
{
#ifdef MULTIPLICITY
dTHXa(PERL_GET_SIG_CONTEXT);
if (!my_perl)
return FALSE;
#endif
switch(dwCtrlType) {
case CTRL_CLOSE_EVENT:
/* A signal that the system sends to all processes attached to a console when
the user closes the console (either by choosing the Close command from the
console window's System menu, or by choosing the End Task command from the
Task List
*/
if (do_raise(aTHX_ 1)) /* SIGHUP */
sig_terminate(aTHX_ 1);
return TRUE;
case CTRL_C_EVENT:
/* A CTRL+c signal was received */
if (do_raise(aTHX_ SIGINT))
sig_terminate(aTHX_ SIGINT);
return TRUE;
case CTRL_BREAK_EVENT:
/* A CTRL+BREAK signal was received */
if (do_raise(aTHX_ SIGBREAK))
sig_terminate(aTHX_ SIGBREAK);
return TRUE;
case CTRL_LOGOFF_EVENT:
/* A signal that the system sends to all console processes when a user is logging
off. This signal does not indicate which user is logging off, so no
assumptions can be made.
*/
break;
case CTRL_SHUTDOWN_EVENT:
/* A signal that the system sends to all console processes when the system is
shutting down.
*/
if (do_raise(aTHX_ SIGTERM))
sig_terminate(aTHX_ SIGTERM);
return TRUE;
default:
break;
}
return FALSE;
}
#ifdef SET_INVALID_PARAMETER_HANDLER
# include <crtdbg.h>
#endif
static void
ansify_path(void)
{
size_t len;
char *ansi_path;
WCHAR *wide_path;
WCHAR *wide_dir;
/* fetch Unicode version of PATH */
len = 2000;
wide_path = (WCHAR*)win32_malloc(len*sizeof(WCHAR));
while (wide_path) {
size_t newlen = GetEnvironmentVariableW(L"PATH", wide_path, len);
if (newlen == 0) {
win32_free(wide_path);
return;
}
if (newlen < len)
break;
len = newlen;
wide_path = (WCHAR*)win32_realloc(wide_path, len*sizeof(WCHAR));
}
if (!wide_path)
return;
/* convert to ANSI pathnames */
wide_dir = wide_path;
ansi_path = NULL;
while (wide_dir) {
WCHAR *sep = wcschr(wide_dir, ';');
char *ansi_dir;
size_t ansi_len;
size_t wide_len;
if (sep)
*sep++ = '\0';
/* remove quotes around pathname */
if (*wide_dir == '"')
++wide_dir;
wide_len = wcslen(wide_dir);
if (wide_len && wide_dir[wide_len-1] == '"')
wide_dir[wide_len-1] = '\0';
/* append ansi_dir to ansi_path */
ansi_dir = win32_ansipath(wide_dir);
ansi_len = strlen(ansi_dir);
if (ansi_path) {
size_t newlen = len + 1 + ansi_len;
ansi_path = (char*)win32_realloc(ansi_path, newlen+1);
if (!ansi_path)
break;
ansi_path[len] = ';';
memcpy(ansi_path+len+1, ansi_dir, ansi_len+1);
len = newlen;
}
else {
len = ansi_len;
ansi_path = (char*)win32_malloc(5+len+1);
if (!ansi_path)
break;
memcpy(ansi_path, "PATH=", 5);
memcpy(ansi_path+5, ansi_dir, len+1);
len += 5;
}
win32_free(ansi_dir);
wide_dir = sep;
}
if (ansi_path) {
/* Update C RTL environ array. This will only have full effect if
* perl_parse() is later called with `environ` as the `env` argument.
* Otherwise S_init_postdump_symbols() will overwrite PATH again.
*
* We do have to ansify() the PATH before Perl has been fully
* initialized because S_find_script() uses the PATH when perl
* is being invoked with the -S option. This happens before %ENV
* is initialized in S_init_postdump_symbols().
*
* XXX Is this a bug? Should S_find_script() use the environment
* XXX passed in the `env` arg to parse_perl()?
*/
putenv(ansi_path);
/* Keep system environment in sync because S_init_postdump_symbols()
* will not call mg_set() if it initializes %ENV from `environ`.
*/
SetEnvironmentVariableA("PATH", ansi_path+5);
win32_free(ansi_path);
}
win32_free(wide_path);
}
/* This hooks a function that is imported by the specified module. The hook is
* local to that module. */
static bool
win32_hook_imported_function_in_module(
HMODULE module, LPCSTR fun_name, FARPROC hook_ptr
)
{
ULONG_PTR image_base = (ULONG_PTR)module;
PIMAGE_DOS_HEADER dos_header = (PIMAGE_DOS_HEADER)image_base;
PIMAGE_NT_HEADERS nt_headers
= (PIMAGE_NT_HEADERS)(image_base + dos_header->e_lfanew);
PIMAGE_OPTIONAL_HEADER opt_header = &nt_headers->OptionalHeader;
PIMAGE_DATA_DIRECTORY data_dir = opt_header->DataDirectory;
DWORD data_dir_len = opt_header->NumberOfRvaAndSizes;
BOOL is_idt_present = data_dir_len > IMAGE_DIRECTORY_ENTRY_IMPORT
&& data_dir[IMAGE_DIRECTORY_ENTRY_IMPORT].VirtualAddress != 0;
if (!is_idt_present)
return FALSE;
BOOL found = FALSE;
/* Import Directory Table */
PIMAGE_IMPORT_DESCRIPTOR idt = (PIMAGE_IMPORT_DESCRIPTOR)(
image_base + data_dir[IMAGE_DIRECTORY_ENTRY_IMPORT].VirtualAddress
);
for (; idt->Name != 0; ++idt) {
/* Import Lookup Table */
PIMAGE_THUNK_DATA ilt
= (PIMAGE_THUNK_DATA)(image_base + idt->OriginalFirstThunk);
/* Import Address Table */
PIMAGE_THUNK_DATA iat
= (PIMAGE_THUNK_DATA)(image_base + idt->FirstThunk);
ULONG_PTR address_of_data;
for (; (address_of_data = ilt->u1.AddressOfData); ++ilt, ++iat) {
/* Ordinal imports are quite rare, so skipping them will most likely
* not cause any problems. */
BOOL is_ordinal
= address_of_data >> ((sizeof(address_of_data) * 8) - 1);
if (is_ordinal)
continue;
LPCSTR name = (
(PIMAGE_IMPORT_BY_NAME)(image_base + address_of_data)
)->Name;
if (strEQ(name, fun_name)) {
DWORD old_protect = 0;
BOOL succ = VirtualProtect(
&iat->u1.Function, sizeof(iat->u1.Function), PAGE_READWRITE,
&old_protect
);
if (!succ)
return FALSE;
iat->u1.Function = (ULONG_PTR)hook_ptr;
found = TRUE;
VirtualProtect(
&iat->u1.Function, sizeof(iat->u1.Function), old_protect,
&old_protect
);
break;
}
}
}
return found;
}
typedef NTSTATUS (NTAPI *pNtQueryInformationFile_t)(HANDLE, PIO_STATUS_BLOCK, PVOID, ULONG, ULONG);
pNtQueryInformationFile_t pNtQueryInformationFile = NULL;
typedef BOOL (WINAPI *pCloseHandle)(HANDLE h);
static pCloseHandle CloseHandle_orig;
/* CloseHandle() that supports sockets. CRT uses mutexes during file operations,
* so the lack of thread safety in this function isn't a problem. */
static BOOL WINAPI
my_CloseHandle(HANDLE h)
{
/* In theory, passing a non-socket handle to closesocket() is fine. It
* should return a WSAENOTSOCK error, which is easy to recover from.
* However, we should avoid doing that because it's not that simple in
* practice. For instance, it can deadlock on a handle to a stuck pipe (see:
* https://github.com/Perl/perl5/issues/19963).
*
* There's no foolproof way to tell if a handle is a socket (mostly because
* of the non-IFS sockets), but in some cases we can tell if a handle
* is definitely *not* a socket.
*/
/* GetFileType() always returns FILE_TYPE_PIPE for sockets. */
BOOL maybe_socket = (GetFileType(h) == FILE_TYPE_PIPE);
if (maybe_socket && pNtQueryInformationFile) {
IO_STATUS_BLOCK isb;
struct {
ULONG name_len;
WCHAR name[100];
} volume = {0};
/* There are many ways to tell a named pipe from a socket, but almost
* all of them can deadlock on a handle to a stuck pipe (like in the
* bug ticket mentioned above). According to my tests,
* FileVolumeNameInfomation is the only relevant function that doesn't
* suffer from this problem.
*
* It's undocumented and it requires Windows 10, so on older systems
* we always pass pipes to closesocket().
*/
NTSTATUS s = pNtQueryInformationFile(
h, &isb, &volume, sizeof(volume), 58 /* FileVolumeNameInformation */
);
if (NT_SUCCESS(s)) {
maybe_socket = (_wcsnicmp(
volume.name, L"\\Device\\NamedPipe", C_ARRAY_LENGTH(volume.name)
) != 0);
}
}
if (maybe_socket) {
if (closesocket((SOCKET)h) == 0)
return TRUE;
else if (WSAGetLastError() != WSAENOTSOCK)
return FALSE;
}
return CloseHandle_orig(h);
}
/* Hook CloseHandle() inside CRT so its functions like _close() or
* _dup2() can close sockets properly. */
static void
win32_hook_closehandle_in_crt()
{
/* Get the handle to the CRT module basing on the address of _close()
* function. */
HMODULE crt_handle;
BOOL succ = GetModuleHandleExA(
GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS
| GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT, (LPCSTR)_close,
&crt_handle
);
if (!succ)
return;
CloseHandle_orig = (pCloseHandle)GetProcAddress(
GetModuleHandleA("kernel32.dll"), "CloseHandle"
);
if (!CloseHandle_orig)
return;
win32_hook_imported_function_in_module(
crt_handle, "CloseHandle", (FARPROC)my_CloseHandle
);
pNtQueryInformationFile = (pNtQueryInformationFile_t)GetProcAddress(
GetModuleHandleA("ntdll.dll"), "NtQueryInformationFile"
);
}
/* Remove the hook installed by win32_hook_closehandle_crt(). This is needed in
* case the Perl DLL is unloaded, which would cause the hook become invalid.
* This can happen in embedded Perls, for example in mod_perl. */
static void
win32_unhook_closehandle_in_crt()
{
if (!CloseHandle_orig)
return;
HMODULE crt_handle;
BOOL succ = GetModuleHandleExA(
GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS
| GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT, (LPCSTR)_close,
&crt_handle
);
if (!succ)
return;
win32_hook_imported_function_in_module(
crt_handle, "CloseHandle", (FARPROC)CloseHandle_orig
);
CloseHandle_orig = NULL;
}
void
Perl_win32_init(int *argcp, char ***argvp)
{
PERL_UNUSED_ARG(argcp);
PERL_UNUSED_ARG(argvp);
#ifdef SET_INVALID_PARAMETER_HANDLER
_invalid_parameter_handler oldHandler, newHandler;
newHandler = my_invalid_parameter_handler;
oldHandler = _set_invalid_parameter_handler(newHandler);
_CrtSetReportMode(_CRT_ASSERT, 0);
#endif
/* Disable floating point errors, Perl will trap the ones we
* care about. VC++ RTL defaults to switching these off
* already, but some RTLs don't. Since we don't
* want to be at the vendor's whim on the default, we set
* it explicitly here.
*/
#if !defined(__GNUC__)
_control87(MCW_EM, MCW_EM);
#endif
MALLOC_INIT;
/* When the manifest resource requests Common-Controls v6 then
* user32.dll no longer registers all the Windows classes used for
* standard controls but leaves some of them to be registered by
* comctl32.dll. InitCommonControls() doesn't do anything but calling
* it makes sure comctl32.dll gets loaded into the process and registers
* the standard control classes. Without this even normal Windows APIs
* like MessageBox() can fail under some versions of Windows XP.
*/
InitCommonControls();
WSADATA wsadata;
WSAStartup(MAKEWORD(2, 2), &wsadata);
g_osver.dwOSVersionInfoSize = sizeof(g_osver);
GetVersionEx(&g_osver);
win32_hook_closehandle_in_crt();
ansify_path();
#ifndef WIN32_NO_REGISTRY
{
LONG retval;
retval = RegOpenKeyExW(HKEY_CURRENT_USER, L"SOFTWARE\\Perl", 0, KEY_READ, &HKCU_Perl_hnd);
if (retval != ERROR_SUCCESS) {
HKCU_Perl_hnd = NULL;
}
retval = RegOpenKeyExW(HKEY_LOCAL_MACHINE, L"SOFTWARE\\Perl", 0, KEY_READ, &HKLM_Perl_hnd);
if (retval != ERROR_SUCCESS) {
HKLM_Perl_hnd = NULL;
}
}
#endif
{
FILETIME ft;
if (!SystemTimeToFileTime(&time_t_epoch_base_systemtime,
&ft)) {
fprintf(stderr, "panic: cannot convert base system time to filetime\n"); /* no interp */
exit(1);
}
time_t_epoch_base_filetime.LowPart = ft.dwLowDateTime;
time_t_epoch_base_filetime.HighPart = ft.dwHighDateTime;
}
MUTEX_INIT(&win32_read_console_mutex);
}
void
Perl_win32_term(void)
{
SHUTDOWN_TERM;
HINTS_REFCNT_TERM;
OP_REFCNT_TERM;
PERLIO_TERM;
MALLOC_TERM;
LOCALE_TERM;
ENV_TERM;
#ifndef WIN32_NO_REGISTRY
/* handles might be NULL, RegCloseKey then returns ERROR_INVALID_HANDLE
but no point of checking and we can't die() at this point */
RegCloseKey(HKLM_Perl_hnd);
RegCloseKey(HKCU_Perl_hnd);
/* the handles are in an undefined state until the next PERL_SYS_INIT3 */
#endif
win32_unhook_closehandle_in_crt();
}
void
win32_get_child_IO(child_IO_table* ptbl)
{
ptbl->childStdIn = GetStdHandle(STD_INPUT_HANDLE);
ptbl->childStdOut = GetStdHandle(STD_OUTPUT_HANDLE);
ptbl->childStdErr = GetStdHandle(STD_ERROR_HANDLE);
}
Sighandler_t
win32_signal(int sig, Sighandler_t subcode)
{
dTHXa(NULL);
if (sig < SIG_SIZE) {
int save_errno = errno;
Sighandler_t result;
#ifdef SET_INVALID_PARAMETER_HANDLER
/* Silence our invalid parameter handler since we expect to make some
* calls with invalid signal numbers giving a SIG_ERR result. */
BOOL oldvalue = set_silent_invalid_parameter_handler(TRUE);
#endif
result = signal(sig, subcode);
#ifdef SET_INVALID_PARAMETER_HANDLER
set_silent_invalid_parameter_handler(oldvalue);
#endif
aTHXa(PERL_GET_THX);
if (result == SIG_ERR) {
result = w32_sighandler[sig];
errno = save_errno;
}
w32_sighandler[sig] = subcode;
return result;
}
else {
errno = EINVAL;
return SIG_ERR;
}
}
/* The PerlMessageWindowClass's WindowProc */
LRESULT CALLBACK
win32_message_window_proc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
return win32_process_message(hwnd, msg, wParam, lParam) ?
0 : DefWindowProc(hwnd, msg, wParam, lParam);
}
/* The real message handler. Can be called with
* hwnd == NULL to process our thread messages. Returns TRUE for any messages
* that it processes */
static LRESULT
win32_process_message(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
/* BEWARE. The context retrieved using dTHX; is the context of the
* 'parent' thread during the CreateWindow() phase - i.e. for all messages
* up to and including WM_CREATE. If it ever happens that you need the
* 'child' context before this, then it needs to be passed into
* win32_create_message_window(), and passed to the WM_NCCREATE handler
* from the lparam of CreateWindow(). It could then be stored/retrieved
* using [GS]etWindowLongPtr(... GWLP_USERDATA ...), possibly eliminating
* the dTHX calls here. */
/* XXX For now it is assumed that the overhead of the dTHX; for what
* are relativley infrequent code-paths, is better than the added
* complexity of getting the correct context passed into
* win32_create_message_window() */
dTHX;
PERL_UNUSED_ARG(hwnd);
PERL_UNUSED_ARG(lParam);
switch(msg) {
#ifdef USE_ITHREADS
case WM_USER_MESSAGE: {
long child = find_pseudo_pid(aTHX_ (int)wParam);
if (child >= 0) {
w32_pseudo_child_message_hwnds[child] = (HWND)lParam;
return 1;
}
break;
}
#endif
case WM_USER_KILL: {
/* We use WM_USER_KILL to fake kill() with other signals */
int sig = (int)wParam;
if (do_raise(aTHX_ sig))
sig_terminate(aTHX_ sig);
return 1;
}
case WM_TIMER: {
/* alarm() is a one-shot but SetTimer() repeats so kill it */
if (w32_timerid && w32_timerid==(UINT)wParam) {
KillTimer(w32_message_hwnd, w32_timerid);
w32_timerid=0;
/* Now fake a call to signal handler */
if (do_raise(aTHX_ 14))
sig_terminate(aTHX_ 14);
return 1;
}
break;
}
default:
break;
} /* switch */
/* Above or other stuff may have set a signal flag, and we may not have
* been called from win32_async_check() (e.g. some other GUI's message
* loop. BUT DON'T dispatch signals here: If someone has set a SIGALRM
* handler that die's, and the message loop that calls here is wrapped
* in an eval, then you may well end up with orphaned windows - signals
* are dispatched by win32_async_check() */
return 0;
}
void
win32_create_message_window_class(void)
{
/* create the window class for "message only" windows */
WNDCLASS wc;
Zero(&wc, 1, wc);
wc.lpfnWndProc = win32_message_window_proc;
wc.hInstance = (HINSTANCE)GetModuleHandle(NULL);
wc.lpszClassName = "PerlMessageWindowClass";
/* second and subsequent calls will fail, but class
* will already be registered */
RegisterClass(&wc);
}
HWND
win32_create_message_window(void)
{
win32_create_message_window_class();
return CreateWindow("PerlMessageWindowClass", "PerlMessageWindow",
0, 0, 0, 0, 0, HWND_MESSAGE, NULL, NULL, NULL);
}
#ifdef HAVE_INTERP_INTERN
static void
win32_csighandler(int sig)
{
#if 0
dTHXa(PERL_GET_SIG_CONTEXT);
warn("Got signal %d",sig);
#endif
PERL_UNUSED_ARG(sig);
/* Does nothing */
}
#if defined(__MINGW32__) && defined(__cplusplus)
#define CAST_HWND__(x) (HWND__*)(x)
#else
#define CAST_HWND__(x) x
#endif
void
Perl_sys_intern_init(pTHX)
{
int i;
w32_perlshell_tokens = NULL;
w32_perlshell_vec = (char**)NULL;
w32_perlshell_items = 0;
w32_fdpid = newAV();
Newx(w32_children, 1, child_tab);
w32_num_children = 0;
# ifdef USE_ITHREADS
w32_pseudo_id = 0;
Newx(w32_pseudo_children, 1, pseudo_child_tab);
w32_num_pseudo_children = 0;
PL_sys_intern.cur_tid = GetCurrentThreadId();
#endif
w32_timerid = 0;
w32_message_hwnd = CAST_HWND__(INVALID_HANDLE_VALUE);
w32_poll_count = 0;
for (i=0; i < SIG_SIZE; i++) {
w32_sighandler[i] = SIG_DFL;
}
# ifdef MULTIPLICITY
if (my_perl == PL_curinterp) {
# else
{
# endif
/* Force C runtime signal stuff to set its console handler */
signal(SIGINT,win32_csighandler);
signal(SIGBREAK,win32_csighandler);
/* We spawn asynchronous processes with the CREATE_NEW_PROCESS_GROUP
* flag. This has the side-effect of disabling Ctrl-C events in all
* processes in this group.
* We re-enable Ctrl-C handling by calling SetConsoleCtrlHandler()
* with a NULL handler.
*/
SetConsoleCtrlHandler(NULL,FALSE);
/* Push our handler on top */
SetConsoleCtrlHandler(win32_ctrlhandler,TRUE);
}
}
void
Perl_sys_intern_clear(pTHX)
{
Safefree(w32_perlshell_tokens);
Safefree(w32_perlshell_vec);
/* NOTE: w32_fdpid is freed by sv_clean_all() */
Safefree(w32_children);
if (w32_timerid) {
KillTimer(w32_message_hwnd, w32_timerid);
w32_timerid = 0;
}
if (w32_message_hwnd != NULL && w32_message_hwnd != INVALID_HANDLE_VALUE)
DestroyWindow(w32_message_hwnd);
/* "win32_checkTLS()" executes very late in perl_destruct() and/or perl_free().
Field cur_tid must be working to the very end of the
interp struct/mem alloc/process.
#ifdef USE_ITHREADS
PL_sys_intern.cur_tid = 0;
#endif
*/
# ifdef MULTIPLICITY
if (my_perl == PL_curinterp) {
# else
{
# endif
SetConsoleCtrlHandler(win32_ctrlhandler,FALSE);
}
# ifdef USE_ITHREADS
Safefree(w32_pseudo_children);
# endif
}
# ifdef USE_ITHREADS
void
Perl_sys_intern_dup(pTHX_ struct interp_intern *src, struct interp_intern *dst)
{
PERL_ARGS_ASSERT_SYS_INTERN_DUP;
dst->perlshell_tokens = NULL;
dst->perlshell_vec = (char**)NULL;
dst->perlshell_items = 0;
dst->fdpid = newAV();
Newxz(dst->children, 1, child_tab);
dst->pseudo_id = 0;
dst->cur_tid = 0;
Newxz(dst->pseudo_children, 1, pseudo_child_tab);
dst->timerid = 0;
dst->message_hwnd = CAST_HWND__(INVALID_HANDLE_VALUE);
dst->poll_count = 0;
Copy(src->sigtable,dst->sigtable,SIG_SIZE,Sighandler_t);
}
# endif /* USE_ITHREADS */
#endif /* HAVE_INTERP_INTERN */