[thirdparty/openssl.git] / crypto / cryptlib.c

/*
 * Copyright 1998-2023 The OpenSSL Project Authors. All Rights Reserved.
 * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved
 *
 * Licensed under the Apache License 2.0 (the "License").  You may not use
 * this file except in compliance with the License.  You can obtain a copy
 * in the file LICENSE in the source distribution or at
 * https://www.openssl.org/source/license.html
 */

#include "internal/e_os.h"
#include "crypto/cryptlib.h"
#include <openssl/safestack.h>

#if defined(_WIN32) && !defined(OPENSSL_SYS_UEFI)
# include <tchar.h>
# include <signal.h>
# ifdef __WATCOMC__
#  if defined(_UNICODE) || defined(__UNICODE__)
#   define _vsntprintf _vsnwprintf
#  else
#   define _vsntprintf _vsnprintf
#  endif
# endif
# ifdef _MSC_VER
#  define alloca _alloca
# endif

# if defined(_WIN32_WINNT) && _WIN32_WINNT>=0x0333
#  ifdef OPENSSL_SYS_WIN_CORE

int OPENSSL_isservice(void)
{
    /* OneCore API cannot interact with GUI */
    return 1;
}
#  else
int OPENSSL_isservice(void)
{
    HWINSTA h;
    DWORD len;
    WCHAR *name;
    static union {
        void *p;
        FARPROC f;
    } _OPENSSL_isservice = {
        NULL
    };

    if (_OPENSSL_isservice.p == NULL) {
        HANDLE mod = GetModuleHandle(NULL);
        FARPROC f = NULL;

        if (mod != NULL)
            f = GetProcAddress(mod, "_OPENSSL_isservice");
        if (f == NULL)
            _OPENSSL_isservice.p = (void *)-1;
        else
            _OPENSSL_isservice.f = f;
    }

    if (_OPENSSL_isservice.p != (void *)-1)
        return (*_OPENSSL_isservice.f) ();

    h = GetProcessWindowStation();
    if (h == NULL)
        return -1;

    if (GetUserObjectInformationW(h, UOI_NAME, NULL, 0, &len) ||
        GetLastError() != ERROR_INSUFFICIENT_BUFFER)
        return -1;

    if (len > 512)
        return -1;              /* paranoia */
    len++, len &= ~1;           /* paranoia */
    name = (WCHAR *)alloca(len + sizeof(WCHAR));
    if (!GetUserObjectInformationW(h, UOI_NAME, name, len, &len))
        return -1;

    len++, len &= ~1;           /* paranoia */
    name[len / sizeof(WCHAR)] = L'\0'; /* paranoia */
#   if 1
    /*
     * This doesn't cover "interactive" services [working with real
     * WinSta0's] nor programs started non-interactively by Task Scheduler
     * [those are working with SAWinSta].
     */
    if (wcsstr(name, L"Service-0x"))
        return 1;
#   else
    /* This covers all non-interactive programs such as services. */
    if (!wcsstr(name, L"WinSta0"))
        return 1;
#   endif
    else
        return 0;
}
#  endif
# else
int OPENSSL_isservice(void)
{
    return 0;
}
# endif

void OPENSSL_showfatal(const char *fmta, ...)
{
    va_list ap;
    TCHAR buf[256];
    const TCHAR *fmt;
    /*
     * First check if it's a console application, in which case the
     * error message would be printed to standard error.
     * Windows CE does not have a concept of a console application,
     * so we need to guard the check.
     */
# ifdef STD_ERROR_HANDLE
    HANDLE h;

    if ((h = GetStdHandle(STD_ERROR_HANDLE)) != NULL &&
        GetFileType(h) != FILE_TYPE_UNKNOWN) {
        /* must be console application */
        int len;
        DWORD out;

        va_start(ap, fmta);
        len = _vsnprintf((char *)buf, sizeof(buf), fmta, ap);
        WriteFile(h, buf, len < 0 ? sizeof(buf) : (DWORD) len, &out, NULL);
        va_end(ap);
        return;
    }
# endif

    if (sizeof(TCHAR) == sizeof(char))
        fmt = (const TCHAR *)fmta;
    else
        do {
            int keepgoing;
            size_t len_0 = strlen(fmta) + 1, i;
            WCHAR *fmtw;

            fmtw = (WCHAR *)alloca(len_0 * sizeof(WCHAR));
            if (fmtw == NULL) {
                fmt = (const TCHAR *)L"no stack?";
                break;
            }
            if (!MultiByteToWideChar(CP_ACP, 0, fmta, len_0, fmtw, len_0))
                for (i = 0; i < len_0; i++)
                    fmtw[i] = (WCHAR)fmta[i];
            for (i = 0; i < len_0; i++) {
                if (fmtw[i] == L'%')
                    do {
                        keepgoing = 0;
                        switch (fmtw[i + 1]) {
                        case L'0':
                        case L'1':
                        case L'2':
                        case L'3':
                        case L'4':
                        case L'5':
                        case L'6':
                        case L'7':
                        case L'8':
                        case L'9':
                        case L'.':
                        case L'*':
                        case L'-':
                            i++;
                            keepgoing = 1;
                            break;
                        case L's':
                            fmtw[i + 1] = L'S';
                            break;
                        case L'S':
                            fmtw[i + 1] = L's';
                            break;
                        case L'c':
                            fmtw[i + 1] = L'C';
                            break;
                        case L'C':
                            fmtw[i + 1] = L'c';
                            break;
                        }
                    } while (keepgoing);
            }
            fmt = (const TCHAR *)fmtw;
        } while (0);

    va_start(ap, fmta);
    _vsntprintf(buf, OSSL_NELEM(buf) - 1, fmt, ap);
    buf[OSSL_NELEM(buf) - 1] = _T('\0');
    va_end(ap);

# if defined(_WIN32_WINNT) && _WIN32_WINNT>=0x0333
#  ifdef OPENSSL_SYS_WIN_CORE
    /* ONECORE is always NONGUI and NT >= 0x0601 */
#   if !defined(NDEBUG)
        /*
        * We are in a situation where we tried to report a critical
        * error and this failed for some reason. As a last resort,
        * in debug builds, send output to the debugger or any other
        * tool like DebugView which can monitor the output.
        */
        OutputDebugString(buf);
#   endif
#  else
    /* this -------------v--- guards NT-specific calls */
    if (check_winnt() && OPENSSL_isservice() > 0) {
        HANDLE hEventLog = RegisterEventSource(NULL, _T("OpenSSL"));

        if (hEventLog != NULL) {
            const TCHAR *pmsg = buf;

            if (!ReportEvent(hEventLog, EVENTLOG_ERROR_TYPE, 0, 0, NULL,
                             1, 0, &pmsg, NULL)) {
#   if !defined(NDEBUG)
                /*
                 * We are in a situation where we tried to report a critical
                 * error and this failed for some reason. As a last resort,
                 * in debug builds, send output to the debugger or any other
                 * tool like DebugView which can monitor the output.
                 */
                OutputDebugString(pmsg);
#   endif
            }

            (void)DeregisterEventSource(hEventLog);
        }
    } else {
        MessageBox(NULL, buf, _T("OpenSSL: FATAL"), MB_OK | MB_ICONERROR);
    }
#  endif
# else
    MessageBox(NULL, buf, _T("OpenSSL: FATAL"), MB_OK | MB_ICONERROR);
# endif
}
#else
void OPENSSL_showfatal(const char *fmta, ...)
{
#ifndef OPENSSL_NO_STDIO
    va_list ap;

    va_start(ap, fmta);
    vfprintf(stderr, fmta, ap);
    va_end(ap);
#endif
}

int OPENSSL_isservice(void)
{
    return 0;
}
#endif

void OPENSSL_die(const char *message, const char *file, int line)
{
    OPENSSL_showfatal("%s:%d: OpenSSL internal error: %s\n",
                      file, line, message);
#if !defined(_WIN32) || defined(OPENSSL_SYS_UEFI)
    abort();
#else
    /*
     * Win32 abort() customarily shows a dialog, but we just did that...
     */
# if !defined(_WIN32_WCE)
    raise(SIGABRT);
# endif
    _exit(3);
#endif
}

#if defined(__TANDEM) && defined(OPENSSL_VPROC)
/*
 * Define a VPROC function for HP NonStop build crypto library.
 * This is used by platform version identification tools.
 * Do not inline this procedure or make it static.
 */
# define OPENSSL_VPROC_STRING_(x)    x##_CRYPTO
# define OPENSSL_VPROC_STRING(x)     OPENSSL_VPROC_STRING_(x)
# define OPENSSL_VPROC_FUNC          OPENSSL_VPROC_STRING(OPENSSL_VPROC)
void OPENSSL_VPROC_FUNC(void) {}
#endif /* __TANDEM */
Commit	Line	Data
d2e9e320	1	/*
da1c088f	2	* Copyright 1998-2023 The OpenSSL Project Authors. All Rights Reserved.
aa8f3d76	3	* Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved
19b8d06a	4	*
0e9725bc	5	* Licensed under the Apache License 2.0 (the "License"). You may not use
d2e9e320 RS	6	* this file except in compliance with the License. You can obtain a copy
	7	* in the file LICENSE in the source distribution or at
	8	* https://www.openssl.org/source/license.html
19b8d06a	9	*/
d2e9e320	10
d5f9166b	11	#include "internal/e_os.h"
25f2138b	12	#include "crypto/cryptlib.h"
c7922304	13	#include <openssl/safestack.h>
d02b48c6	14
c0e090bd	15	#if defined(_WIN32) && !defined(OPENSSL_SYS_UEFI)
0f113f3e MC	16	# include <tchar.h>
	17	# include <signal.h>
	18	# ifdef __WATCOMC__
	19	# if defined(_UNICODE) \|\| defined(__UNICODE__)
	20	# define _vsntprintf _vsnwprintf
	21	# else
	22	# define _vsntprintf _vsnprintf
	23	# endif
	24	# endif
	25	# ifdef _MSC_VER
	26	# define alloca _alloca
	27	# endif
	28
	29	# if defined(_WIN32_WINNT) && _WIN32_WINNT>=0x0333
b2b4dfcc P	30	# ifdef OPENSSL_SYS_WIN_CORE
	31
	32	int OPENSSL_isservice(void)
	33	{
	34	/* OneCore API cannot interact with GUI */
	35	return 1;
	36	}
	37	# else
e476f942	38	int OPENSSL_isservice(void)
0f113f3e MC	39	{
	40	HWINSTA h;
	41	DWORD len;
	42	WCHAR *name;
	43	static union {
	44	void *p;
156561b0	45	FARPROC f;
0f113f3e MC	46	} _OPENSSL_isservice = {
	47	NULL
	48	};
471d0eb3 AP	49
471d0eb3 AP	50	if (_OPENSSL_isservice.p == NULL) {
156561b0	51	HANDLE mod = GetModuleHandle(NULL);
af7d8d34	52	FARPROC f = NULL;
9e4a1c3f	53
156561b0	54	if (mod != NULL)
9e4a1c3f AP	55	f = GetProcAddress(mod, "_OPENSSL_isservice");
9e4a1c3f AP	56	if (f == NULL)
0f113f3e	57	_OPENSSL_isservice.p = (void *)-1;
9e4a1c3f AP	58	else
9e4a1c3f AP	59	_OPENSSL_isservice.f = f;
471d0eb3 AP	60	}
	61
	62	if (_OPENSSL_isservice.p != (void *)-1)
0f113f3e	63	return (*_OPENSSL_isservice.f) ();
9f2027e5	64
9f2027e5	65	h = GetProcessWindowStation();
0f113f3e MC	66	if (h == NULL)
	67	return -1;
	68
	69	if (GetUserObjectInformationW(h, UOI_NAME, NULL, 0, &len) \|\|
	70	GetLastError() != ERROR_INSUFFICIENT_BUFFER)
	71	return -1;
	72
	73	if (len > 512)
	74	return -1; /* paranoia */
	75	len++, len &= ~1; /* paranoia */
	76	name = (WCHAR *)alloca(len + sizeof(WCHAR));
	77	if (!GetUserObjectInformationW(h, UOI_NAME, name, len, &len))
	78	return -1;
	79
	80	len++, len &= ~1; /* paranoia */
	81	name[len / sizeof(WCHAR)] = L'\0'; /* paranoia */
b2b4dfcc	82	# if 1
0f113f3e MC	83	/*
	84	* This doesn't cover "interactive" services [working with real
	85	* WinSta0's] nor programs started non-interactively by Task Scheduler
	86	* [those are working with SAWinSta].
	87	*/
	88	if (wcsstr(name, L"Service-0x"))
	89	return 1;
b2b4dfcc	90	# else
9f2027e5	91	/* This covers all non-interactive programs such as services. */
0f113f3e MC	92	if (!wcsstr(name, L"WinSta0"))
0f113f3e MC	93	return 1;
b2b4dfcc	94	# endif
0f113f3e MC	95	else
0f113f3e MC	96	return 0;
9f2027e5	97	}
b2b4dfcc	98	# endif
0f113f3e MC	99	# else
	100	int OPENSSL_isservice(void)
	101	{
	102	return 0;
	103	}
	104	# endif
	105
	106	void OPENSSL_showfatal(const char *fmta, ...)
	107	{
	108	va_list ap;
	109	TCHAR buf[256];
	110	const TCHAR *fmt;
2f0ca54c EK	111	/*
	112	* First check if it's a console application, in which case the
	113	* error message would be printed to standard error.
	114	* Windows CE does not have a concept of a console application,
	115	* so we need to guard the check.
	116	*/
	117	# ifdef STD_ERROR_HANDLE
0f113f3e MC	118	HANDLE h;
	119
	120	if ((h = GetStdHandle(STD_ERROR_HANDLE)) != NULL &&
	121	GetFileType(h) != FILE_TYPE_UNKNOWN) {
	122	/* must be console application */
	123	int len;
	124	DWORD out;
	125
	126	va_start(ap, fmta);
	127	len = _vsnprintf((char *)buf, sizeof(buf), fmta, ap);
	128	WriteFile(h, buf, len < 0 ? sizeof(buf) : (DWORD) len, &out, NULL);
	129	va_end(ap);
	130	return;
9f2027e5	131	}
0f113f3e	132	# endif
9f2027e5	133
0f113f3e MC	134	if (sizeof(TCHAR) == sizeof(char))
0f113f3e MC	135	fmt = (const TCHAR *)fmta;
9f2027e5	136	else
0f113f3e MC	137	do {
	138	int keepgoing;
	139	size_t len_0 = strlen(fmta) + 1, i;
	140	WCHAR *fmtw;
	141
	142	fmtw = (WCHAR )alloca(len_0 sizeof(WCHAR));
	143	if (fmtw == NULL) {
	144	fmt = (const TCHAR *)L"no stack?";
	145	break;
	146	}
0f113f3e	147	if (!MultiByteToWideChar(CP_ACP, 0, fmta, len_0, fmtw, len_0))
0f113f3e MC	148	for (i = 0; i < len_0; i++)
0f113f3e MC	149	fmtw[i] = (WCHAR)fmta[i];
0f113f3e MC	150	for (i = 0; i < len_0; i++) {
	151	if (fmtw[i] == L'%')
	152	do {
	153	keepgoing = 0;
	154	switch (fmtw[i + 1]) {
	155	case L'0':
	156	case L'1':
	157	case L'2':
	158	case L'3':
	159	case L'4':
	160	case L'5':
	161	case L'6':
	162	case L'7':
	163	case L'8':
	164	case L'9':
	165	case L'.':
	166	case L'*':
	167	case L'-':
	168	i++;
	169	keepgoing = 1;
	170	break;
	171	case L's':
	172	fmtw[i + 1] = L'S';
	173	break;
	174	case L'S':
	175	fmtw[i + 1] = L's';
	176	break;
	177	case L'c':
	178	fmtw[i + 1] = L'C';
	179	break;
	180	case L'C':
	181	fmtw[i + 1] = L'c';
	182	break;
	183	}
	184	} while (keepgoing);
	185	}
	186	fmt = (const TCHAR *)fmtw;
	187	} while (0);
	188
	189	va_start(ap, fmta);
bdcb1a2c DSH	190	_vsntprintf(buf, OSSL_NELEM(buf) - 1, fmt, ap);
bdcb1a2c DSH	191	buf[OSSL_NELEM(buf) - 1] = _T('\0');
0f113f3e MC	192	va_end(ap);
	193
	194	# if defined(_WIN32_WINNT) && _WIN32_WINNT>=0x0333
b2b4dfcc P	195	# ifdef OPENSSL_SYS_WIN_CORE
b2b4dfcc P	196	/* ONECORE is always NONGUI and NT >= 0x0601 */
b2b4dfcc P	197	# if !defined(NDEBUG)
	198	/*
	199	* We are in a situation where we tried to report a critical
	200	* error and this failed for some reason. As a last resort,
	201	* in debug builds, send output to the debugger or any other
	202	* tool like DebugView which can monitor the output.
	203	*/
	204	OutputDebugString(buf);
	205	# endif
	206	# else
0f113f3e MC	207	/* this -------------v--- guards NT-specific calls */
0f113f3e MC	208	if (check_winnt() && OPENSSL_isservice() > 0) {
4cd94416 GK	209	HANDLE hEventLog = RegisterEventSource(NULL, _T("OpenSSL"));
	210
	211	if (hEventLog != NULL) {
	212	const TCHAR *pmsg = buf;
	213
	214	if (!ReportEvent(hEventLog, EVENTLOG_ERROR_TYPE, 0, 0, NULL,
	215	1, 0, &pmsg, NULL)) {
b2b4dfcc	216	# if !defined(NDEBUG)
4cd94416 GK	217	/*
	218	* We are in a situation where we tried to report a critical
	219	* error and this failed for some reason. As a last resort,
	220	* in debug builds, send output to the debugger or any other
	221	* tool like DebugView which can monitor the output.
	222	*/
	223	OutputDebugString(pmsg);
b2b4dfcc	224	# endif
4cd94416 GK	225	}
	226
	227	(void)DeregisterEventSource(hEventLog);
	228	}
b2b4dfcc	229	} else {
4cd94416	230	MessageBox(NULL, buf, _T("OpenSSL: FATAL"), MB_OK \| MB_ICONERROR);
b2b4dfcc P	231	}
	232	# endif
	233	# else
	234	MessageBox(NULL, buf, _T("OpenSSL: FATAL"), MB_OK \| MB_ICONERROR);
df443918	235	# endif
9f2027e5 AP	236	}
9f2027e5 AP	237	#else
0f113f3e MC	238	void OPENSSL_showfatal(const char *fmta, ...)
0f113f3e MC	239	{
984d6c60	240	#ifndef OPENSSL_NO_STDIO
0f113f3e MC	241	va_list ap;
	242
	243	va_start(ap, fmta);
	244	vfprintf(stderr, fmta, ap);
	245	va_end(ap);
984d6c60	246	#endif
0f113f3e	247	}
9f2027e5	248
0f113f3e MC	249	int OPENSSL_isservice(void)
	250	{
	251	return 0;
9f2027e5 AP	252	}
	253	#endif
	254
040d43b3	255	void OPENSSL_die(const char message, const char file, int line)
0f113f3e	256	{
040d43b3 RS	257	OPENSSL_showfatal("%s:%d: OpenSSL internal error: %s\n",
040d43b3 RS	258	file, line, message);
c0e090bd	259	#if !defined(_WIN32) \|\| defined(OPENSSL_SYS_UEFI)
0f113f3e	260	abort();
3b58c74c	261	#else
0f113f3e MC	262	/*
	263	* Win32 abort() customarily shows a dialog, but we just did that...
	264	*/
	265	# if !defined(_WIN32_WCE)
	266	raise(SIGABRT);
	267	# endif
	268	_exit(3);
3b58c74c	269	#endif
0f113f3e	270	}
9e88c827	271
08073700 RB	272	#if defined(__TANDEM) && defined(OPENSSL_VPROC)
	273	/*
	274	* Define a VPROC function for HP NonStop build crypto library.
	275	* This is used by platform version identification tools.
	276	* Do not inline this procedure or make it static.
	277	*/
	278	# define OPENSSL_VPROC_STRING_(x) x##_CRYPTO
	279	# define OPENSSL_VPROC_STRING(x) OPENSSL_VPROC_STRING_(x)
	280	# define OPENSSL_VPROC_FUNC OPENSSL_VPROC_STRING(OPENSSL_VPROC)
	281	void OPENSSL_VPROC_FUNC(void) {}
	282	#endif /* __TANDEM */