733 lines
18 KiB
C
733 lines
18 KiB
C
/*
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* Copyright 2001-2022 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the Apache License 2.0 (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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#include "internal/e_os.h"
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#include <openssl/e_os2.h>
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#include <openssl/err.h>
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#include <openssl/ui.h>
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#ifndef OPENSSL_NO_UI_CONSOLE
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/*
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* need for #define _POSIX_C_SOURCE arises whenever you pass -ansi to gcc
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* [maybe others?], because it masks interfaces not discussed in standard,
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* sigaction and fileno included. -pedantic would be more appropriate for the
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* intended purposes, but we can't prevent users from adding -ansi.
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*/
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# if defined(OPENSSL_SYS_VXWORKS)
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# include <sys/types.h>
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# endif
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# if !defined(_POSIX_C_SOURCE) && defined(OPENSSL_SYS_VMS)
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# ifndef _POSIX_C_SOURCE
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# define _POSIX_C_SOURCE 2
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# endif
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# endif
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# include <signal.h>
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# include <stdio.h>
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# include <string.h>
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# include <errno.h>
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# if !defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_VMS)
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# include <unistd.h>
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/*
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* If unistd.h defines _POSIX_VERSION, we conclude that we are on a POSIX
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* system and have sigaction and termios.
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*/
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# if defined(_POSIX_VERSION) && _POSIX_VERSION>=199309L
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# define SIGACTION
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# if !defined(TERMIOS) && !defined(TERMIO) && !defined(SGTTY)
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# define TERMIOS
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# endif
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# endif
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# endif
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# include "ui_local.h"
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# include "internal/cryptlib.h"
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# ifdef OPENSSL_SYS_VMS /* prototypes for sys$whatever */
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# include <starlet.h>
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# ifdef __DECC
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# pragma message disable DOLLARID
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# endif
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# endif
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# ifdef WIN_CONSOLE_BUG
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# include <windows.h>
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# ifndef OPENSSL_SYS_WINCE
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# include <wincon.h>
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# endif
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# endif
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/*
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* There are 6 types of terminal interface supported, TERMIO, TERMIOS, VMS,
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* MSDOS, WIN32 Console and SGTTY.
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*
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* If someone defines one of the macros TERMIO, TERMIOS or SGTTY, it will
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* remain respected. Otherwise, we default to TERMIOS except for a few
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* systems that require something different.
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*
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* Note: we do not use SGTTY unless it's defined by the configuration. We
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* may eventually opt to remove its use entirely.
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*/
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# if !defined(TERMIOS) && !defined(TERMIO) && !defined(SGTTY)
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# if defined(_LIBC)
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# undef TERMIOS
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# define TERMIO
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# undef SGTTY
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/*
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* We know that VMS, MSDOS, VXWORKS, use entirely other mechanisms.
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*/
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# elif !defined(OPENSSL_SYS_VMS) \
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&& !defined(OPENSSL_SYS_MSDOS) \
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&& !defined(OPENSSL_SYS_VXWORKS)
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# define TERMIOS
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# undef TERMIO
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# undef SGTTY
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# endif
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# endif
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# if defined(OPENSSL_SYS_VXWORKS)
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# undef TERMIOS
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# undef TERMIO
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# undef SGTTY
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# endif
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# ifdef TERMIOS
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# include <termios.h>
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# define TTY_STRUCT struct termios
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# define TTY_FLAGS c_lflag
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# define TTY_get(tty,data) tcgetattr(tty,data)
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# define TTY_set(tty,data) tcsetattr(tty,TCSANOW,data)
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# endif
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# ifdef TERMIO
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# include <termio.h>
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# define TTY_STRUCT struct termio
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# define TTY_FLAGS c_lflag
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# define TTY_get(tty,data) ioctl(tty,TCGETA,data)
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# define TTY_set(tty,data) ioctl(tty,TCSETA,data)
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# endif
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# ifdef SGTTY
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# include <sgtty.h>
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# define TTY_STRUCT struct sgttyb
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# define TTY_FLAGS sg_flags
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# define TTY_get(tty,data) ioctl(tty,TIOCGETP,data)
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# define TTY_set(tty,data) ioctl(tty,TIOCSETP,data)
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# endif
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# if !defined(_LIBC) && !defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_VMS) && ! (defined(OPENSSL_SYS_TANDEM) && defined(_SPT_MODEL_))
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# include <sys/ioctl.h>
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# endif
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# ifdef OPENSSL_SYS_MSDOS
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# include <conio.h>
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# endif
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# ifdef OPENSSL_SYS_VMS
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# include <ssdef.h>
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# include <iodef.h>
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# include <ttdef.h>
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# include <descrip.h>
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struct IOSB {
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short iosb$w_value;
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short iosb$w_count;
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long iosb$l_info;
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};
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# endif
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# ifndef NX509_SIG
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# define NX509_SIG 32
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# endif
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/* Define globals. They are protected by a lock */
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# ifdef SIGACTION
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static struct sigaction savsig[NX509_SIG];
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# else
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static void (*savsig[NX509_SIG]) (int);
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# endif
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# ifdef OPENSSL_SYS_VMS
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static struct IOSB iosb;
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static $DESCRIPTOR(terminal, "TT");
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static long tty_orig[3], tty_new[3]; /* XXX Is there any guarantee that this
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* will always suffice for the actual
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* structures? */
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static long status;
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static unsigned short channel = 0;
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# elif defined(_WIN32) && !defined(_WIN32_WCE)
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static DWORD tty_orig, tty_new;
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# else
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# if !defined(OPENSSL_SYS_MSDOS) || defined(__DJGPP__)
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static TTY_STRUCT tty_orig, tty_new;
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# endif
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# endif
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static FILE *tty_in, *tty_out;
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static int is_a_tty;
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/* Declare static functions */
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# if !defined(OPENSSL_SYS_WINCE)
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static int read_till_nl(FILE *);
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static void recsig(int);
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static void pushsig(void);
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static void popsig(void);
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# endif
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# if defined(OPENSSL_SYS_MSDOS) && !defined(_WIN32)
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static int noecho_fgets(char *buf, int size, FILE *tty);
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# endif
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static int read_string_inner(UI *ui, UI_STRING *uis, int echo, int strip_nl);
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static int read_string(UI *ui, UI_STRING *uis);
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static int write_string(UI *ui, UI_STRING *uis);
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static int open_console(UI *ui);
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static int echo_console(UI *ui);
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static int noecho_console(UI *ui);
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static int close_console(UI *ui);
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/*
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* The following function makes sure that info and error strings are printed
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* before any prompt.
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*/
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static int write_string(UI *ui, UI_STRING *uis)
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{
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switch (UI_get_string_type(uis)) {
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case UIT_ERROR:
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case UIT_INFO:
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fputs(UI_get0_output_string(uis), tty_out);
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fflush(tty_out);
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break;
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case UIT_NONE:
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case UIT_PROMPT:
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case UIT_VERIFY:
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case UIT_BOOLEAN:
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break;
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}
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return 1;
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}
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static int read_string(UI *ui, UI_STRING *uis)
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{
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int ok = 0;
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switch (UI_get_string_type(uis)) {
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case UIT_BOOLEAN:
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fputs(UI_get0_output_string(uis), tty_out);
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fputs(UI_get0_action_string(uis), tty_out);
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fflush(tty_out);
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return read_string_inner(ui, uis,
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UI_get_input_flags(uis) & UI_INPUT_FLAG_ECHO,
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0);
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case UIT_PROMPT:
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fputs(UI_get0_output_string(uis), tty_out);
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fflush(tty_out);
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return read_string_inner(ui, uis,
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UI_get_input_flags(uis) & UI_INPUT_FLAG_ECHO,
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1);
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case UIT_VERIFY:
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fprintf(tty_out, "Verifying - %s", UI_get0_output_string(uis));
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fflush(tty_out);
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if ((ok = read_string_inner(ui, uis,
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UI_get_input_flags(uis) &
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UI_INPUT_FLAG_ECHO, 1)) <= 0)
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return ok;
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if (strcmp(UI_get0_result_string(uis), UI_get0_test_string(uis)) != 0) {
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fprintf(tty_out, "Verify failure\n");
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fflush(tty_out);
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return 0;
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}
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break;
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case UIT_NONE:
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case UIT_INFO:
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case UIT_ERROR:
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break;
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}
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return 1;
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}
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# if !defined(OPENSSL_SYS_WINCE)
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/* Internal functions to read a string without echoing */
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static int read_till_nl(FILE *in)
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{
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# define SIZE 4
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char buf[SIZE + 1];
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do {
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if (!fgets(buf, SIZE, in))
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return 0;
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} while (strchr(buf, '\n') == NULL);
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return 1;
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}
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static volatile sig_atomic_t intr_signal;
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# endif
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static int read_string_inner(UI *ui, UI_STRING *uis, int echo, int strip_nl)
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{
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static int ps;
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int ok;
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char result[BUFSIZ];
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int maxsize = BUFSIZ - 1;
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# if !defined(OPENSSL_SYS_WINCE)
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char *p = NULL;
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int echo_eol = !echo;
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intr_signal = 0;
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ok = 0;
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ps = 0;
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pushsig();
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ps = 1;
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if (!echo && !noecho_console(ui))
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goto error;
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ps = 2;
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result[0] = '\0';
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# if defined(_WIN32)
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if (is_a_tty) {
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DWORD numread;
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# if defined(CP_UTF8)
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if (GetEnvironmentVariableW(L"OPENSSL_WIN32_UTF8", NULL, 0) != 0) {
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WCHAR wresult[BUFSIZ];
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if (ReadConsoleW(GetStdHandle(STD_INPUT_HANDLE),
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wresult, maxsize, &numread, NULL)) {
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if (numread >= 2 &&
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wresult[numread-2] == L'\r' &&
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wresult[numread-1] == L'\n') {
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wresult[numread-2] = L'\n';
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numread--;
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}
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wresult[numread] = '\0';
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if (WideCharToMultiByte(CP_UTF8, 0, wresult, -1,
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result, sizeof(result), NULL, 0) > 0)
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p = result;
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OPENSSL_cleanse(wresult, sizeof(wresult));
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}
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} else
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# endif
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if (ReadConsoleA(GetStdHandle(STD_INPUT_HANDLE),
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result, maxsize, &numread, NULL)) {
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if (numread >= 2 &&
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result[numread-2] == '\r' && result[numread-1] == '\n') {
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result[numread-2] = '\n';
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numread--;
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}
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result[numread] = '\0';
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p = result;
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}
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} else
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# elif defined(OPENSSL_SYS_MSDOS)
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if (!echo) {
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noecho_fgets(result, maxsize, tty_in);
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p = result; /* FIXME: noecho_fgets doesn't return errors */
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} else
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# endif
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p = fgets(result, maxsize, tty_in);
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if (p == NULL)
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goto error;
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if (feof(tty_in))
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goto error;
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if (ferror(tty_in))
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goto error;
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if ((p = (char *)strchr(result, '\n')) != NULL) {
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if (strip_nl)
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*p = '\0';
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} else if (!read_till_nl(tty_in))
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goto error;
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if (UI_set_result(ui, uis, result) >= 0)
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ok = 1;
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error:
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if (intr_signal == SIGINT)
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ok = -1;
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if (echo_eol)
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fprintf(tty_out, "\n");
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if (ps >= 2 && !echo && !echo_console(ui))
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ok = 0;
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if (ps >= 1)
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popsig();
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# else
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ok = 1;
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# endif
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OPENSSL_cleanse(result, BUFSIZ);
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return ok;
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}
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|
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/* Internal functions to open, handle and close a channel to the console. */
|
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static int open_console(UI *ui)
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{
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if (!CRYPTO_THREAD_write_lock(ui->lock))
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return 0;
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is_a_tty = 1;
|
|
|
|
# if defined(OPENSSL_SYS_VXWORKS)
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tty_in = stdin;
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tty_out = stderr;
|
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# elif defined(_WIN32) && !defined(_WIN32_WCE)
|
|
if ((tty_out = fopen("conout$", "w")) == NULL)
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tty_out = stderr;
|
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|
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if (GetConsoleMode(GetStdHandle(STD_INPUT_HANDLE), &tty_orig)) {
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tty_in = stdin;
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} else {
|
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is_a_tty = 0;
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if ((tty_in = fopen("conin$", "r")) == NULL)
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tty_in = stdin;
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}
|
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# else
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# ifdef OPENSSL_SYS_MSDOS
|
|
# define DEV_TTY "con"
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|
# else
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# define DEV_TTY "/dev/tty"
|
|
# endif
|
|
if ((tty_in = fopen(DEV_TTY, "r")) == NULL)
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tty_in = stdin;
|
|
if ((tty_out = fopen(DEV_TTY, "w")) == NULL)
|
|
tty_out = stderr;
|
|
# endif
|
|
|
|
# if defined(TTY_get) && !defined(OPENSSL_SYS_VMS)
|
|
if (TTY_get(fileno(tty_in), &tty_orig) == -1) {
|
|
# ifdef ENOTTY
|
|
if (errno == ENOTTY)
|
|
is_a_tty = 0;
|
|
else
|
|
# endif
|
|
# ifdef EINVAL
|
|
/*
|
|
* Ariel Glenn reports that solaris can return EINVAL instead.
|
|
* This should be ok
|
|
*/
|
|
if (errno == EINVAL)
|
|
is_a_tty = 0;
|
|
else
|
|
# endif
|
|
# ifdef ENXIO
|
|
/*
|
|
* Solaris can return ENXIO.
|
|
* This should be ok
|
|
*/
|
|
if (errno == ENXIO)
|
|
is_a_tty = 0;
|
|
else
|
|
# endif
|
|
# ifdef EIO
|
|
/*
|
|
* Linux can return EIO.
|
|
* This should be ok
|
|
*/
|
|
if (errno == EIO)
|
|
is_a_tty = 0;
|
|
else
|
|
# endif
|
|
# ifdef EPERM
|
|
/*
|
|
* Linux can return EPERM (Operation not permitted),
|
|
* e.g. if a daemon executes openssl via fork()+execve()
|
|
* This should be ok
|
|
*/
|
|
if (errno == EPERM)
|
|
is_a_tty = 0;
|
|
else
|
|
# endif
|
|
# ifdef ENODEV
|
|
/*
|
|
* MacOS X returns ENODEV (Operation not supported by device),
|
|
* which seems appropriate.
|
|
*/
|
|
if (errno == ENODEV)
|
|
is_a_tty = 0;
|
|
else
|
|
# endif
|
|
{
|
|
ERR_raise_data(ERR_LIB_UI, UI_R_UNKNOWN_TTYGET_ERRNO_VALUE,
|
|
"errno=%d", errno);
|
|
return 0;
|
|
}
|
|
}
|
|
# endif
|
|
# ifdef OPENSSL_SYS_VMS
|
|
status = sys$assign(&terminal, &channel, 0, 0);
|
|
|
|
/* if there isn't a TT device, something is very wrong */
|
|
if (status != SS$_NORMAL) {
|
|
ERR_raise_data(ERR_LIB_UI, UI_R_SYSASSIGN_ERROR,
|
|
"status=%%X%08X", status);
|
|
return 0;
|
|
}
|
|
|
|
status = sys$qiow(0, channel, IO$_SENSEMODE, &iosb, 0, 0, tty_orig, 12,
|
|
0, 0, 0, 0);
|
|
|
|
/* If IO$_SENSEMODE doesn't work, this is not a terminal device */
|
|
if ((status != SS$_NORMAL) || (iosb.iosb$w_value != SS$_NORMAL))
|
|
is_a_tty = 0;
|
|
# endif
|
|
return 1;
|
|
}
|
|
|
|
static int noecho_console(UI *ui)
|
|
{
|
|
# ifdef TTY_FLAGS
|
|
memcpy(&(tty_new), &(tty_orig), sizeof(tty_orig));
|
|
tty_new.TTY_FLAGS &= ~ECHO;
|
|
# endif
|
|
|
|
# if defined(TTY_set) && !defined(OPENSSL_SYS_VMS)
|
|
if (is_a_tty && (TTY_set(fileno(tty_in), &tty_new) == -1))
|
|
return 0;
|
|
# endif
|
|
# ifdef OPENSSL_SYS_VMS
|
|
if (is_a_tty) {
|
|
tty_new[0] = tty_orig[0];
|
|
tty_new[1] = tty_orig[1] | TT$M_NOECHO;
|
|
tty_new[2] = tty_orig[2];
|
|
status = sys$qiow(0, channel, IO$_SETMODE, &iosb, 0, 0, tty_new, 12,
|
|
0, 0, 0, 0);
|
|
if ((status != SS$_NORMAL) || (iosb.iosb$w_value != SS$_NORMAL)) {
|
|
ERR_raise_data(ERR_LIB_UI, UI_R_SYSQIOW_ERROR,
|
|
"status=%%X%08X, iosb.iosb$w_value=%%X%08X",
|
|
status, iosb.iosb$w_value);
|
|
return 0;
|
|
}
|
|
}
|
|
# endif
|
|
# if defined(_WIN32) && !defined(_WIN32_WCE)
|
|
if (is_a_tty) {
|
|
tty_new = tty_orig;
|
|
tty_new &= ~ENABLE_ECHO_INPUT;
|
|
SetConsoleMode(GetStdHandle(STD_INPUT_HANDLE), tty_new);
|
|
}
|
|
# endif
|
|
return 1;
|
|
}
|
|
|
|
static int echo_console(UI *ui)
|
|
{
|
|
# if defined(TTY_set) && !defined(OPENSSL_SYS_VMS)
|
|
memcpy(&(tty_new), &(tty_orig), sizeof(tty_orig));
|
|
if (is_a_tty && (TTY_set(fileno(tty_in), &tty_new) == -1))
|
|
return 0;
|
|
# endif
|
|
# ifdef OPENSSL_SYS_VMS
|
|
if (is_a_tty) {
|
|
tty_new[0] = tty_orig[0];
|
|
tty_new[1] = tty_orig[1];
|
|
tty_new[2] = tty_orig[2];
|
|
status = sys$qiow(0, channel, IO$_SETMODE, &iosb, 0, 0, tty_new, 12,
|
|
0, 0, 0, 0);
|
|
if ((status != SS$_NORMAL) || (iosb.iosb$w_value != SS$_NORMAL)) {
|
|
ERR_raise_data(ERR_LIB_UI, UI_R_SYSQIOW_ERROR,
|
|
"status=%%X%08X, iosb.iosb$w_value=%%X%08X",
|
|
status, iosb.iosb$w_value);
|
|
return 0;
|
|
}
|
|
}
|
|
# endif
|
|
# if defined(_WIN32) && !defined(_WIN32_WCE)
|
|
if (is_a_tty) {
|
|
tty_new = tty_orig;
|
|
SetConsoleMode(GetStdHandle(STD_INPUT_HANDLE), tty_new);
|
|
}
|
|
# endif
|
|
return 1;
|
|
}
|
|
|
|
static int close_console(UI *ui)
|
|
{
|
|
int ret = 1;
|
|
|
|
if (tty_in != stdin)
|
|
fclose(tty_in);
|
|
if (tty_out != stderr)
|
|
fclose(tty_out);
|
|
# ifdef OPENSSL_SYS_VMS
|
|
status = sys$dassgn(channel);
|
|
if (status != SS$_NORMAL) {
|
|
ERR_raise_data(ERR_LIB_UI, UI_R_SYSDASSGN_ERROR,
|
|
"status=%%X%08X", status);
|
|
ret = 0;
|
|
}
|
|
# endif
|
|
CRYPTO_THREAD_unlock(ui->lock);
|
|
|
|
return ret;
|
|
}
|
|
|
|
# if !defined(OPENSSL_SYS_WINCE)
|
|
/* Internal functions to handle signals and act on them */
|
|
static void pushsig(void)
|
|
{
|
|
# ifndef OPENSSL_SYS_WIN32
|
|
int i;
|
|
# endif
|
|
# ifdef SIGACTION
|
|
struct sigaction sa;
|
|
|
|
memset(&sa, 0, sizeof(sa));
|
|
sa.sa_handler = recsig;
|
|
# endif
|
|
|
|
# ifdef OPENSSL_SYS_WIN32
|
|
savsig[SIGABRT] = signal(SIGABRT, recsig);
|
|
savsig[SIGFPE] = signal(SIGFPE, recsig);
|
|
savsig[SIGILL] = signal(SIGILL, recsig);
|
|
savsig[SIGINT] = signal(SIGINT, recsig);
|
|
savsig[SIGSEGV] = signal(SIGSEGV, recsig);
|
|
savsig[SIGTERM] = signal(SIGTERM, recsig);
|
|
# else
|
|
for (i = 1; i < NX509_SIG; i++) {
|
|
# ifdef SIGUSR1
|
|
if (i == SIGUSR1)
|
|
continue;
|
|
# endif
|
|
# ifdef SIGUSR2
|
|
if (i == SIGUSR2)
|
|
continue;
|
|
# endif
|
|
# ifdef SIGKILL
|
|
if (i == SIGKILL) /* We can't make any action on that. */
|
|
continue;
|
|
# endif
|
|
# ifdef SIGACTION
|
|
sigaction(i, &sa, &savsig[i]);
|
|
# else
|
|
savsig[i] = signal(i, recsig);
|
|
# endif
|
|
}
|
|
# endif
|
|
|
|
# ifdef SIGWINCH
|
|
signal(SIGWINCH, SIG_DFL);
|
|
# endif
|
|
}
|
|
|
|
static void popsig(void)
|
|
{
|
|
# ifdef OPENSSL_SYS_WIN32
|
|
signal(SIGABRT, savsig[SIGABRT]);
|
|
signal(SIGFPE, savsig[SIGFPE]);
|
|
signal(SIGILL, savsig[SIGILL]);
|
|
signal(SIGINT, savsig[SIGINT]);
|
|
signal(SIGSEGV, savsig[SIGSEGV]);
|
|
signal(SIGTERM, savsig[SIGTERM]);
|
|
# else
|
|
int i;
|
|
for (i = 1; i < NX509_SIG; i++) {
|
|
# ifdef SIGUSR1
|
|
if (i == SIGUSR1)
|
|
continue;
|
|
# endif
|
|
# ifdef SIGUSR2
|
|
if (i == SIGUSR2)
|
|
continue;
|
|
# endif
|
|
# ifdef SIGACTION
|
|
sigaction(i, &savsig[i], NULL);
|
|
# else
|
|
signal(i, savsig[i]);
|
|
# endif
|
|
}
|
|
# endif
|
|
}
|
|
|
|
static void recsig(int i)
|
|
{
|
|
intr_signal = i;
|
|
}
|
|
# endif
|
|
|
|
/* Internal functions specific for Windows */
|
|
# if defined(OPENSSL_SYS_MSDOS) && !defined(_WIN32)
|
|
static int noecho_fgets(char *buf, int size, FILE *tty)
|
|
{
|
|
int i;
|
|
char *p;
|
|
|
|
p = buf;
|
|
for (;;) {
|
|
if (size == 0) {
|
|
*p = '\0';
|
|
break;
|
|
}
|
|
size--;
|
|
# if defined(_WIN32)
|
|
i = _getch();
|
|
# else
|
|
i = getch();
|
|
# endif
|
|
if (i == '\r')
|
|
i = '\n';
|
|
*(p++) = i;
|
|
if (i == '\n') {
|
|
*p = '\0';
|
|
break;
|
|
}
|
|
}
|
|
# ifdef WIN_CONSOLE_BUG
|
|
/*
|
|
* Win95 has several evil console bugs: one of these is that the last
|
|
* character read using getch() is passed to the next read: this is
|
|
* usually a CR so this can be trouble. No STDIO fix seems to work but
|
|
* flushing the console appears to do the trick.
|
|
*/
|
|
{
|
|
HANDLE inh;
|
|
inh = GetStdHandle(STD_INPUT_HANDLE);
|
|
FlushConsoleInputBuffer(inh);
|
|
}
|
|
# endif
|
|
return strlen(buf);
|
|
}
|
|
# endif
|
|
|
|
static UI_METHOD ui_openssl = {
|
|
"OpenSSL default user interface",
|
|
open_console,
|
|
write_string,
|
|
NULL, /* No flusher is needed for command lines */
|
|
read_string,
|
|
close_console,
|
|
NULL
|
|
};
|
|
|
|
/* The method with all the built-in console thingies */
|
|
UI_METHOD *UI_OpenSSL(void)
|
|
{
|
|
return &ui_openssl;
|
|
}
|
|
|
|
static const UI_METHOD *default_UI_meth = &ui_openssl;
|
|
|
|
#else
|
|
|
|
static const UI_METHOD *default_UI_meth = NULL;
|
|
|
|
#endif
|
|
|
|
void UI_set_default_method(const UI_METHOD *meth)
|
|
{
|
|
default_UI_meth = meth;
|
|
}
|
|
|
|
const UI_METHOD *UI_get_default_method(void)
|
|
{
|
|
return default_UI_meth;
|
|
}
|