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openbsd-compat/readpassphrase_win32.c

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+/*
+* Author: Manoj Ampalam <manoj.ampalam@microsoft.com>
+*
+* Author: Bryan Berns <berns@uwalumni.com>
+*   Modified group detection use s4u token information 
+*
+* Copyright(c) 2016 Microsoft Corp.
+* All rights reserved
+*
+* Misc Unix POSIX routine implementations for Windows
+*
+* Redistribution and use in source and binary forms, with or without
+* modification, are permitted provided that the following conditions
+* are met :
+*
+* 1. Redistributions of source code must retain the above copyright
+* notice, this list of conditions and the following disclaimer.
+* 2. Redistributions in binary form must reproduce the above copyright
+* notice, this list of conditions and the following disclaimer in the
+* documentation and / or other materials provided with the distribution.
+*
+* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES(INCLUDING, BUT
+* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#define UMDF_USING_NTSTATUS 
+#define SECURITY_WIN32
+#include <windows.h>
+#include <stdio.h>
+#include <time.h>
+#include <shlwapi.h>
+#include <conio.h>
+#include <lm.h>
+#include <sddl.h>
+#include <aclapi.h>
+#include <ntsecapi.h>
+#include <security.h>
+#include <ntstatus.h>
+#include <wchar.h>
+
+#include "openbsd-compat.h"
+
+#ifndef HAVE_READPASSPHRASE
+
+/*on error returns NULL and sets errno*/
+static wchar_t *
+utf8_to_utf16(const char *utf8)
+{
+	int needed = 0;
+	wchar_t* utf16 = NULL;
+	if ((needed = MultiByteToWideChar(CP_UTF8, 0, utf8, -1, NULL, 0)) == 0 ||
+	    (utf16 = malloc(needed * sizeof(wchar_t))) == NULL ||
+	    MultiByteToWideChar(CP_UTF8, 0, utf8, -1, utf16, needed) == 0) {
+		/* debug3("failed to convert utf8 payload:%s error:%d", utf8, GetLastError()); */
+		errno = ENOMEM;
+		return NULL;
+	}
+
+	return utf16;
+}
+
+char *
+readpassphrase(const char *prompt, char *outBuf, size_t outBufLen, int flags)
+{
+	size_t current_index = 0;
+	char ch;
+	wchar_t* wtmp = NULL;
+
+	if (outBufLen == 0) {
+		errno = EINVAL;
+		return NULL;
+	}
+
+	while (_kbhit()) (void)_getch();
+
+	wtmp = utf8_to_utf16(prompt);
+	if (wtmp == NULL)
+		errx(1, "unable to alloc memory");
+
+	_cputws(wtmp);
+	free(wtmp);
+
+	while (current_index < outBufLen - 1) {
+		ch = (char)_getch();
+		
+		if (ch == '\r') {
+			if (_kbhit()) (void)_getch(); /* read linefeed if its there */
+			break;
+		} else if (ch == '\n') {
+			break;
+		} else if (ch == '\b') { /* backspace */
+			if (current_index > 0) {
+				if (flags & RPP_ECHO_ON)
+					printf_s("%c \b", ch);
+
+				current_index--; /* overwrite last character */
+			}
+		} else if (ch == '\003') { /* exit on Ctrl+C */
+			errx(1, "");
+		} else {
+			if (flags & RPP_SEVENBIT)
+				ch &= 0x7f;
+
+			if (isalpha((unsigned char)ch)) {
+				if(flags & RPP_FORCELOWER)
+					ch = (char)tolower((unsigned char)ch);
+				if(flags & RPP_FORCEUPPER)
+					ch = (char)toupper((unsigned char)ch);
+			}
+
+			outBuf[current_index++] = ch;
+			if(flags & RPP_ECHO_ON)
+				printf_s("%c", ch);
+		}
+	}
+
+	outBuf[current_index] = '\0';
+	_cputs("\n");
+
+	return outBuf;
+}
+
+#endif /* HAVE_READPASSPHRASE */