| 1 | /*
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| 2 | * Copyright 1998-2022 The OpenSSL Project Authors. All Rights Reserved.
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| 3 | * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved
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| 4 | *
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| 5 | * Licensed under the Apache License 2.0 (the "License"). You may not use
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| 6 | * this file except in compliance with the License. You can obtain a copy
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| 7 | * in the file LICENSE in the source distribution or at
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| 8 | * https://www.openssl.org/source/license.html
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| 9 | */
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| 10 |
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| 11 | #include "internal/e_os.h"
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| 12 | #include "crypto/cryptlib.h"
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| 13 | #include <openssl/safestack.h>
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| 14 |
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| 15 | #if defined(_WIN32)
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| 16 | # include <tchar.h>
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| 17 | # include <signal.h>
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| 18 | # ifdef __WATCOMC__
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| 19 | # if defined(_UNICODE) || defined(__UNICODE__)
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| 20 | # define _vsntprintf _vsnwprintf
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| 21 | # else
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| 22 | # define _vsntprintf _vsnprintf
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| 23 | # endif
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| 24 | # endif
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| 25 | # ifdef _MSC_VER
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| 26 | # define alloca _alloca
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| 27 | # endif
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| 28 |
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| 29 | # if defined(_WIN32_WINNT) && _WIN32_WINNT>=0x0333
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| 30 | # ifdef OPENSSL_SYS_WIN_CORE
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| 31 |
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| 32 | int OPENSSL_isservice(void)
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| 33 | {
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| 34 | /* OneCore API cannot interact with GUI */
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| 35 | return 1;
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| 36 | }
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| 37 | # else
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| 38 | int OPENSSL_isservice(void)
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| 39 | {
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| 40 | HWINSTA h;
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| 41 | DWORD len;
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| 42 | WCHAR *name;
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| 43 | static union {
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| 44 | void *p;
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| 45 | FARPROC f;
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| 46 | } _OPENSSL_isservice = {
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| 47 | NULL
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| 48 | };
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| 49 |
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| 50 | if (_OPENSSL_isservice.p == NULL) {
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| 51 | HANDLE mod = GetModuleHandle(NULL);
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| 52 | FARPROC f = NULL;
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| 53 |
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| 54 | if (mod != NULL)
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| 55 | f = GetProcAddress(mod, "_OPENSSL_isservice");
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| 56 | if (f == NULL)
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| 57 | _OPENSSL_isservice.p = (void *)-1;
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| 58 | else
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| 59 | _OPENSSL_isservice.f = f;
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| 60 | }
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| 61 |
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| 62 | if (_OPENSSL_isservice.p != (void *)-1)
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| 63 | return (*_OPENSSL_isservice.f) ();
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| 64 |
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| 65 | h = GetProcessWindowStation();
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| 66 | if (h == NULL)
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| 67 | return -1;
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| 68 |
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| 69 | if (GetUserObjectInformationW(h, UOI_NAME, NULL, 0, &len) ||
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| 70 | GetLastError() != ERROR_INSUFFICIENT_BUFFER)
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| 71 | return -1;
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| 72 |
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| 73 | if (len > 512)
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| 74 | return -1; /* paranoia */
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| 75 | len++, len &= ~1; /* paranoia */
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| 76 | name = (WCHAR *)alloca(len + sizeof(WCHAR));
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| 77 | if (!GetUserObjectInformationW(h, UOI_NAME, name, len, &len))
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| 78 | return -1;
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| 79 |
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| 80 | len++, len &= ~1; /* paranoia */
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| 81 | name[len / sizeof(WCHAR)] = L'\0'; /* paranoia */
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| 82 | # if 1
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| 83 | /*
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| 84 | * This doesn't cover "interactive" services [working with real
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| 85 | * WinSta0's] nor programs started non-interactively by Task Scheduler
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| 86 | * [those are working with SAWinSta].
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| 87 | */
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| 88 | if (wcsstr(name, L"Service-0x"))
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| 89 | return 1;
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| 90 | # else
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| 91 | /* This covers all non-interactive programs such as services. */
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| 92 | if (!wcsstr(name, L"WinSta0"))
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| 93 | return 1;
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| 94 | # endif
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| 95 | else
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| 96 | return 0;
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| 97 | }
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| 98 | # endif
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| 99 | # else
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| 100 | int OPENSSL_isservice(void)
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| 101 | {
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| 102 | return 0;
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| 103 | }
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| 104 | # endif
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| 105 |
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| 106 | void OPENSSL_showfatal(const char *fmta, ...)
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| 107 | {
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| 108 | va_list ap;
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| 109 | TCHAR buf[256];
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| 110 | const TCHAR *fmt;
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| 111 | /*
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| 112 | * First check if it's a console application, in which case the
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| 113 | * error message would be printed to standard error.
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| 114 | * Windows CE does not have a concept of a console application,
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| 115 | * so we need to guard the check.
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| 116 | */
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| 117 | # ifdef STD_ERROR_HANDLE
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| 118 | HANDLE h;
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| 119 |
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| 120 | if ((h = GetStdHandle(STD_ERROR_HANDLE)) != NULL &&
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| 121 | GetFileType(h) != FILE_TYPE_UNKNOWN) {
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| 122 | /* must be console application */
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| 123 | int len;
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| 124 | DWORD out;
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| 125 |
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| 126 | va_start(ap, fmta);
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| 127 | len = _vsnprintf((char *)buf, sizeof(buf), fmta, ap);
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| 128 | WriteFile(h, buf, len < 0 ? sizeof(buf) : (DWORD) len, &out, NULL);
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| 129 | va_end(ap);
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| 130 | return;
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| 131 | }
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| 132 | # endif
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| 133 |
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| 134 | if (sizeof(TCHAR) == sizeof(char))
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| 135 | fmt = (const TCHAR *)fmta;
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| 136 | else
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| 137 | do {
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| 138 | int keepgoing;
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| 139 | size_t len_0 = strlen(fmta) + 1, i;
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| 140 | WCHAR *fmtw;
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| 141 |
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| 142 | fmtw = (WCHAR *)alloca(len_0 * sizeof(WCHAR));
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| 143 | if (fmtw == NULL) {
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| 144 | fmt = (const TCHAR *)L"no stack?";
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| 145 | break;
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| 146 | }
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| 147 | if (!MultiByteToWideChar(CP_ACP, 0, fmta, len_0, fmtw, len_0))
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| 148 | for (i = 0; i < len_0; i++)
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| 149 | fmtw[i] = (WCHAR)fmta[i];
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| 150 | for (i = 0; i < len_0; i++) {
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| 151 | if (fmtw[i] == L'%')
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| 152 | do {
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| 153 | keepgoing = 0;
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| 154 | switch (fmtw[i + 1]) {
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| 155 | case L'0':
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| 156 | case L'1':
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| 157 | case L'2':
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| 158 | case L'3':
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| 159 | case L'4':
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| 160 | case L'5':
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| 161 | case L'6':
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| 162 | case L'7':
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| 163 | case L'8':
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| 164 | case L'9':
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| 165 | case L'.':
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| 166 | case L'*':
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| 167 | case L'-':
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| 168 | i++;
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| 169 | keepgoing = 1;
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| 170 | break;
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| 171 | case L's':
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| 172 | fmtw[i + 1] = L'S';
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| 173 | break;
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| 174 | case L'S':
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| 175 | fmtw[i + 1] = L's';
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| 176 | break;
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| 177 | case L'c':
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| 178 | fmtw[i + 1] = L'C';
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| 179 | break;
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| 180 | case L'C':
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| 181 | fmtw[i + 1] = L'c';
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| 182 | break;
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| 183 | }
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| 184 | } while (keepgoing);
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| 185 | }
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| 186 | fmt = (const TCHAR *)fmtw;
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| 187 | } while (0);
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| 188 |
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| 189 | va_start(ap, fmta);
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| 190 | _vsntprintf(buf, OSSL_NELEM(buf) - 1, fmt, ap);
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| 191 | buf[OSSL_NELEM(buf) - 1] = _T('\0');
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| 192 | va_end(ap);
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| 193 |
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| 194 | # if defined(_WIN32_WINNT) && _WIN32_WINNT>=0x0333
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| 195 | # ifdef OPENSSL_SYS_WIN_CORE
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| 196 | /* ONECORE is always NONGUI and NT >= 0x0601 */
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| 197 | # if !defined(NDEBUG)
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| 198 | /*
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| 199 | * We are in a situation where we tried to report a critical
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| 200 | * error and this failed for some reason. As a last resort,
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| 201 | * in debug builds, send output to the debugger or any other
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| 202 | * tool like DebugView which can monitor the output.
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| 203 | */
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| 204 | OutputDebugString(buf);
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| 205 | # endif
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| 206 | # else
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| 207 | /* this -------------v--- guards NT-specific calls */
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| 208 | if (check_winnt() && OPENSSL_isservice() > 0) {
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| 209 | HANDLE hEventLog = RegisterEventSource(NULL, _T("OpenSSL"));
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| 210 |
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| 211 | if (hEventLog != NULL) {
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| 212 | const TCHAR *pmsg = buf;
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| 213 |
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| 214 | if (!ReportEvent(hEventLog, EVENTLOG_ERROR_TYPE, 0, 0, NULL,
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| 215 | 1, 0, &pmsg, NULL)) {
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| 216 | # if !defined(NDEBUG)
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| 217 | /*
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| 218 | * We are in a situation where we tried to report a critical
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| 219 | * error and this failed for some reason. As a last resort,
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| 220 | * in debug builds, send output to the debugger or any other
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| 221 | * tool like DebugView which can monitor the output.
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| 222 | */
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| 223 | OutputDebugString(pmsg);
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| 224 | # endif
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| 225 | }
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| 226 |
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| 227 | (void)DeregisterEventSource(hEventLog);
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| 228 | }
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| 229 | } else {
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| 230 | MessageBox(NULL, buf, _T("OpenSSL: FATAL"), MB_OK | MB_ICONERROR);
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| 231 | }
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| 232 | # endif
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| 233 | # else
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| 234 | MessageBox(NULL, buf, _T("OpenSSL: FATAL"), MB_OK | MB_ICONERROR);
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| 235 | # endif
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| 236 | }
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| 237 | #else
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| 238 | void OPENSSL_showfatal(const char *fmta, ...)
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| 239 | {
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| 240 | #ifndef OPENSSL_NO_STDIO
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| 241 | va_list ap;
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| 242 |
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| 243 | va_start(ap, fmta);
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| 244 | vfprintf(stderr, fmta, ap);
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| 245 | va_end(ap);
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| 246 | #endif
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| 247 | }
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| 248 |
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| 249 | int OPENSSL_isservice(void)
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| 250 | {
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| 251 | return 0;
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| 252 | }
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| 253 | #endif
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| 254 |
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| 255 | void OPENSSL_die(const char *message, const char *file, int line)
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| 256 | {
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| 257 | OPENSSL_showfatal("%s:%d: OpenSSL internal error: %s\n",
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| 258 | file, line, message);
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| 259 | #if !defined(_WIN32)
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| 260 | abort();
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| 261 | #else
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| 262 | /*
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| 263 | * Win32 abort() customarily shows a dialog, but we just did that...
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| 264 | */
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| 265 | # if !defined(_WIN32_WCE)
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| 266 | raise(SIGABRT);
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| 267 | # endif
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| 268 | _exit(3);
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| 269 | #endif
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| 270 | }
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| 271 |
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| 272 | #if defined(__TANDEM) && defined(OPENSSL_VPROC)
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| 273 | /*
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| 274 | * Define a VPROC function for HP NonStop build crypto library.
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| 275 | * This is used by platform version identification tools.
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| 276 | * Do not inline this procedure or make it static.
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| 277 | */
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| 278 | # define OPENSSL_VPROC_STRING_(x) x##_CRYPTO
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| 279 | # define OPENSSL_VPROC_STRING(x) OPENSSL_VPROC_STRING_(x)
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| 280 | # define OPENSSL_VPROC_FUNC OPENSSL_VPROC_STRING(OPENSSL_VPROC)
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| 281 | void OPENSSL_VPROC_FUNC(void) {}
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| 282 | #endif /* __TANDEM */
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