Qt/QML edition

dependencies/libarchive-3.4.2/libarchive_fe/passphrase.c

@@ -0,0 +1,333 @@
+/*-
+ * Copyright (c) 2014 Michihiro NAKAJIMA
+ * All rights reserved.
+ *
+ * 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
+ *    in this position and unchanged.
+ * 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(S) ``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(S) 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.
+ */
+/*	$OpenBSD: readpassphrase.c,v 1.27 2019/01/25 00:19:25 millert Exp $	*/
+
+/*
+ * Copyright (c) 2000-2002, 2007, 2010
+ * 	Todd C. Miller <millert@openbsd.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * Sponsored in part by the Defense Advanced Research Projects
+ * Agency (DARPA) and Air Force Research Laboratory, Air Force
+ * Materiel Command, USAF, under agreement number F39502-99-1-0512.
+ */
+
+/* OPENBSD ORIGINAL: lib/libc/gen/readpassphrase.c */
+
+
+#include "lafe_platform.h"
+__FBSDID("$FreeBSD$");
+
+#include <errno.h>
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+#ifdef HAVE_READPASSPHRASE_H
+#include <readpassphrase.h>
+#endif
+
+#include "err.h"
+#include "passphrase.h"
+
+#ifndef HAVE_READPASSPHRASE
+
+#define RPP_ECHO_OFF    0x00		/* Turn off echo (default). */
+#define RPP_ECHO_ON     0x01		/* Leave echo on. */
+#define RPP_REQUIRE_TTY 0x02		/* Fail if there is no tty. */
+#define RPP_FORCELOWER  0x04		/* Force input to lower case. */
+#define RPP_FORCEUPPER  0x08		/* Force input to upper case. */
+#define RPP_SEVENBIT    0x10		/* Strip the high bit from input. */
+#define RPP_STDIN       0x20		/* Read from stdin, not /dev/tty */
+
+
+#if defined(_WIN32) && !defined(__CYGWIN__)
+#include <windows.h>
+
+static char *
+readpassphrase(const char *prompt, char *buf, size_t bufsiz, int flags)
+{
+	HANDLE hStdin, hStdout;
+	DWORD mode, rbytes;
+	BOOL success;
+
+	(void)flags;
+
+	hStdin = GetStdHandle(STD_INPUT_HANDLE);
+	if (hStdin == INVALID_HANDLE_VALUE)
+		return (NULL);
+	hStdout = GetStdHandle(STD_OUTPUT_HANDLE);
+	if (hStdout == INVALID_HANDLE_VALUE)
+		return (NULL);
+
+	success = GetConsoleMode(hStdin, &mode);
+	if (!success)
+		return (NULL);
+	mode &= ~ENABLE_ECHO_INPUT;
+	mode |= ENABLE_LINE_INPUT | ENABLE_PROCESSED_INPUT;
+	success = SetConsoleMode(hStdin, mode);
+	if (!success)
+		return (NULL);
+
+	success = WriteFile(hStdout, prompt, (DWORD)strlen(prompt),
+		NULL, NULL);
+	if (!success)
+		return (NULL);
+	success = ReadFile(hStdin, buf, (DWORD)bufsiz - 1, &rbytes, NULL);
+	if (!success)
+		return (NULL);
+	WriteFile(hStdout, "\r\n", 2, NULL, NULL);
+	buf[rbytes] = '\0';
+	/* Remove trailing carriage return(s). */
+	if (rbytes > 2 && buf[rbytes - 2] == '\r' && buf[rbytes - 1] == '\n')
+		buf[rbytes - 2] = '\0';
+
+	return (buf);
+}
+
+#else /* _WIN32 && !__CYGWIN__ */
+
+#include <assert.h>
+#include <ctype.h>
+#include <fcntl.h>
+#ifdef HAVE_PATHS_H
+#include <paths.h>
+#endif
+#include <signal.h>
+#include <string.h>
+#include <termios.h>
+#include <unistd.h>
+
+#ifndef _PATH_TTY
+#define _PATH_TTY "/dev/tty"
+#endif
+
+#ifdef TCSASOFT
+# define _T_FLUSH	(TCSAFLUSH|TCSASOFT)
+#else
+# define _T_FLUSH	(TCSAFLUSH)
+#endif
+
+/* SunOS 4.x which lacks _POSIX_VDISABLE, but has VDISABLE */
+#if !defined(_POSIX_VDISABLE) && defined(VDISABLE)
+#  define _POSIX_VDISABLE       VDISABLE
+#endif
+
+#define M(a,b) (a > b ? a : b)
+#define MAX_SIGNO M(M(M(SIGALRM, SIGHUP), \
+                      M(SIGINT, SIGPIPE)), \
+                    M(M(SIGQUIT, SIGTERM), \
+                      M(M(SIGTSTP, SIGTTIN), SIGTTOU)))
+
+static volatile sig_atomic_t signo[MAX_SIGNO + 1];
+
+static void
+handler(int s)
+{
+	assert(s <= MAX_SIGNO);
+	signo[s] = 1;
+}
+
+static char *
+readpassphrase(const char *prompt, char *buf, size_t bufsiz, int flags)
+{
+	ssize_t nr;
+	int input, output, save_errno, i, need_restart;
+	char ch, *p, *end;
+	struct termios term, oterm;
+	struct sigaction sa, savealrm, saveint, savehup, savequit, saveterm;
+	struct sigaction savetstp, savettin, savettou, savepipe;
+
+	/* I suppose we could alloc on demand in this case (XXX). */
+	if (bufsiz == 0) {
+		errno = EINVAL;
+		return(NULL);
+	}
+
+restart:
+	for (i = 0; i <= MAX_SIGNO; i++)
+		signo[i] = 0;
+	nr = -1;
+	save_errno = 0;
+	need_restart = 0;
+	/*
+	 * Read and write to /dev/tty if available.  If not, read from
+	 * stdin and write to stderr unless a tty is required.
+	 */
+	if ((flags & RPP_STDIN) ||
+	    (input = output = open(_PATH_TTY, O_RDWR)) == -1) {
+		if (flags & RPP_REQUIRE_TTY) {
+			errno = ENOTTY;
+			return(NULL);
+		}
+		input = STDIN_FILENO;
+		output = STDERR_FILENO;
+	}
+
+	/*
+	 * Turn off echo if possible.
+	 * If we are using a tty but are not the foreground pgrp this will
+	 * generate SIGTTOU, so do it *before* installing the signal handlers.
+	 */
+	if (input != STDIN_FILENO && tcgetattr(input, &oterm) == 0) {
+		memcpy(&term, &oterm, sizeof(term));
+		if (!(flags & RPP_ECHO_ON))
+			term.c_lflag &= ~(ECHO | ECHONL);
+#ifdef VSTATUS
+		if (term.c_cc[VSTATUS] != _POSIX_VDISABLE)
+			term.c_cc[VSTATUS] = _POSIX_VDISABLE;
+#endif
+		(void)tcsetattr(input, _T_FLUSH, &term);
+	} else {
+		memset(&term, 0, sizeof(term));
+		term.c_lflag |= ECHO;
+		memset(&oterm, 0, sizeof(oterm));
+		oterm.c_lflag |= ECHO;
+	}
+
+	/*
+	 * Catch signals that would otherwise cause the user to end
+	 * up with echo turned off in the shell.  Don't worry about
+	 * things like SIGXCPU and SIGVTALRM for now.
+	 */
+	sigemptyset(&sa.sa_mask);
+	sa.sa_flags = 0;		/* don't restart system calls */
+	sa.sa_handler = handler;
+	/* Keep this list in sync with MAX_SIGNO! */
+	(void)sigaction(SIGALRM, &sa, &savealrm);
+	(void)sigaction(SIGHUP, &sa, &savehup);
+	(void)sigaction(SIGINT, &sa, &saveint);
+	(void)sigaction(SIGPIPE, &sa, &savepipe);
+	(void)sigaction(SIGQUIT, &sa, &savequit);
+	(void)sigaction(SIGTERM, &sa, &saveterm);
+	(void)sigaction(SIGTSTP, &sa, &savetstp);
+	(void)sigaction(SIGTTIN, &sa, &savettin);
+	(void)sigaction(SIGTTOU, &sa, &savettou);
+
+	if (!(flags & RPP_STDIN)) {
+		int r = write(output, prompt, strlen(prompt));
+		(void)r;
+	}
+	end = buf + bufsiz - 1;
+	p = buf;
+	while ((nr = read(input, &ch, 1)) == 1 && ch != '\n' && ch != '\r') {
+		if (p < end) {
+			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);
+			}
+			*p++ = ch;
+		}
+	}
+	*p = '\0';
+	save_errno = errno;
+	if (!(term.c_lflag & ECHO)) {
+		int r = write(output, "\n", 1);
+		(void)r;
+	}
+
+	/* Restore old terminal settings and signals. */
+	if (memcmp(&term, &oterm, sizeof(term)) != 0) {
+		const int sigttou = signo[SIGTTOU];
+
+		/* Ignore SIGTTOU generated when we are not the fg pgrp. */
+		while (tcsetattr(input, _T_FLUSH, &oterm) == -1 &&
+		    errno == EINTR && !signo[SIGTTOU])
+			continue;
+		signo[SIGTTOU] = sigttou;
+	}
+	(void)sigaction(SIGALRM, &savealrm, NULL);
+	(void)sigaction(SIGHUP, &savehup, NULL);
+	(void)sigaction(SIGINT, &saveint, NULL);
+	(void)sigaction(SIGQUIT, &savequit, NULL);
+	(void)sigaction(SIGPIPE, &savepipe, NULL);
+	(void)sigaction(SIGTERM, &saveterm, NULL);
+	(void)sigaction(SIGTSTP, &savetstp, NULL);
+	(void)sigaction(SIGTTIN, &savettin, NULL);
+	(void)sigaction(SIGTTOU, &savettou, NULL);
+	if (input != STDIN_FILENO)
+		(void)close(input);
+
+	/*
+	 * If we were interrupted by a signal, resend it to ourselves
+	 * now that we have restored the signal handlers.
+	 */
+	for (i = 0; i <= MAX_SIGNO; i++) {
+		if (signo[i]) {
+			kill(getpid(), i);
+			switch (i) {
+			case SIGTSTP:
+			case SIGTTIN:
+			case SIGTTOU:
+				need_restart = 1;
+			}
+		}
+	}
+	if (need_restart)
+		goto restart;
+
+	if (save_errno)
+		errno = save_errno;
+	return(nr == -1 ? NULL : buf);
+}
+#endif /* _WIN32 && !__CYGWIN__ */
+#endif /* HAVE_READPASSPHRASE */
+
+char *
+lafe_readpassphrase(const char *prompt, char *buf, size_t bufsiz)
+{
+	char *p;
+
+	p = readpassphrase(prompt, buf, bufsiz, RPP_ECHO_OFF);
+	if (p == NULL) {
+		switch (errno) {
+		case EINTR:
+			break;
+		default:
+			lafe_errc(1, errno, "Couldn't read passphrase");
+			break;
+		}
+	}
+	return (p);
+}
+