ui_openssl.c
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- /* crypto/ui/ui_openssl.c -*- mode:C; c-file-style: "eay" -*- */
- /* Written by Richard Levitte (richard@levitte.org) and others
- * for the OpenSSL project 2001.
- */
- /* ====================================================================
- * Copyright (c) 2001 The OpenSSL Project. 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.
- *
- * 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.
- *
- * 3. All advertising materials mentioning features or use of this
- * software must display the following acknowledgment:
- * "This product includes software developed by the OpenSSL Project
- * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
- *
- * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
- * endorse or promote products derived from this software without
- * prior written permission. For written permission, please contact
- * openssl-core@openssl.org.
- *
- * 5. Products derived from this software may not be called "OpenSSL"
- * nor may "OpenSSL" appear in their names without prior written
- * permission of the OpenSSL Project.
- *
- * 6. Redistributions of any form whatsoever must retain the following
- * acknowledgment:
- * "This product includes software developed by the OpenSSL Project
- * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
- *
- * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
- * EXPRESSED 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 OpenSSL PROJECT OR
- * ITS CONTRIBUTORS 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.
- * ====================================================================
- *
- * This product includes cryptographic software written by Eric Young
- * (eay@cryptsoft.com). This product includes software written by Tim
- * Hudson (tjh@cryptsoft.com).
- *
- */
- /* The lowest level part of this file was previously in crypto/des/read_pwd.c,
- * Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
- * All rights reserved.
- *
- * This package is an SSL implementation written
- * by Eric Young (eay@cryptsoft.com).
- * The implementation was written so as to conform with Netscapes SSL.
- *
- * This library is free for commercial and non-commercial use as long as
- * the following conditions are aheared to. The following conditions
- * apply to all code found in this distribution, be it the RC4, RSA,
- * lhash, DES, etc., code; not just the SSL code. The SSL documentation
- * included with this distribution is covered by the same copyright terms
- * except that the holder is Tim Hudson (tjh@cryptsoft.com).
- *
- * Copyright remains Eric Young's, and as such any Copyright notices in
- * the code are not to be removed.
- * If this package is used in a product, Eric Young should be given attribution
- * as the author of the parts of the library used.
- * This can be in the form of a textual message at program startup or
- * in documentation (online or textual) provided with the package.
- *
- * 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 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.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * "This product includes cryptographic software written by
- * Eric Young (eay@cryptsoft.com)"
- * The word 'cryptographic' can be left out if the rouines from the library
- * being used are not cryptographic related :-).
- * 4. If you include any Windows specific code (or a derivative thereof) from
- * the apps directory (application code) you must include an acknowledgement:
- * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
- *
- * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``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 OR CONTRIBUTORS 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.
- *
- * The licence and distribution terms for any publically available version or
- * derivative of this code cannot be changed. i.e. this code cannot simply be
- * copied and put under another distribution licence
- * [including the GNU Public Licence.]
- */
- #include <openssl/e_os2.h>
- /* need for #define _POSIX_C_SOURCE arises whenever you pass -ansi to gcc
- * [maybe others?], because it masks interfaces not discussed in standard,
- * sigaction and fileno included. -pedantic would be more appropriate for
- * the intended purposes, but we can't prevent users from adding -ansi.
- */
- #define _POSIX_C_SOURCE 1
- #include <signal.h>
- #include <stdio.h>
- #include <string.h>
- #include <errno.h>
- #if !defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_VMS)
- # ifdef OPENSSL_UNISTD
- # include OPENSSL_UNISTD
- # else
- # include <unistd.h>
- # endif
- /* If unistd.h defines _POSIX_VERSION, we conclude that we
- * are on a POSIX system and have sigaction and termios. */
- # if defined(_POSIX_VERSION)
- # define SIGACTION
- # if !defined(TERMIOS) && !defined(TERMIO) && !defined(SGTTY)
- # define TERMIOS
- # endif
- # endif
- #endif
- #ifdef WIN16TTY
- # undef OPENSSL_SYS_WIN16
- # undef WIN16
- # undef _WINDOWS
- # include <graph.h>
- #endif
- /* 06-Apr-92 Luke Brennan Support for VMS */
- #include "ui_locl.h"
- #include "cryptlib.h"
- #ifdef OPENSSL_SYS_VMS /* prototypes for sys$whatever */
- # include <starlet.h>
- # ifdef __DECC
- # pragma message disable DOLLARID
- # endif
- #endif
- #ifdef WIN_CONSOLE_BUG
- # include <windows.h>
- #ifndef OPENSSL_SYS_WINCE
- # include <wincon.h>
- #endif
- #endif
- /* There are 5 types of terminal interface supported,
- * TERMIO, TERMIOS, VMS, MSDOS and SGTTY
- */
- #if defined(__sgi) && !defined(TERMIOS)
- # define TERMIOS
- # undef TERMIO
- # undef SGTTY
- #endif
- #if defined(linux) && !defined(TERMIO)
- # undef TERMIOS
- # define TERMIO
- # undef SGTTY
- #endif
- #ifdef _LIBC
- # undef TERMIOS
- # define TERMIO
- # undef SGTTY
- #endif
- #if !defined(TERMIO) && !defined(TERMIOS) && !defined(OPENSSL_SYS_VMS) && !defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_MACINTOSH_CLASSIC) && !defined(MAC_OS_GUSI_SOURCE)
- # undef TERMIOS
- # undef TERMIO
- # define SGTTY
- #endif
- #if defined(OPENSSL_SYS_VXWORKS)
- #undef TERMIOS
- #undef TERMIO
- #undef SGTTY
- #endif
- #if defined(OPENSSL_SYS_NETWARE)
- #undef TERMIOS
- #undef TERMIO
- #undef SGTTY
- #endif
- #ifdef TERMIOS
- # include <termios.h>
- # define TTY_STRUCT struct termios
- # define TTY_FLAGS c_lflag
- # define TTY_get(tty,data) tcgetattr(tty,data)
- # define TTY_set(tty,data) tcsetattr(tty,TCSANOW,data)
- #endif
- #ifdef TERMIO
- # include <termio.h>
- # define TTY_STRUCT struct termio
- # define TTY_FLAGS c_lflag
- # define TTY_get(tty,data) ioctl(tty,TCGETA,data)
- # define TTY_set(tty,data) ioctl(tty,TCSETA,data)
- #endif
- #ifdef SGTTY
- # include <sgtty.h>
- # define TTY_STRUCT struct sgttyb
- # define TTY_FLAGS sg_flags
- # define TTY_get(tty,data) ioctl(tty,TIOCGETP,data)
- # define TTY_set(tty,data) ioctl(tty,TIOCSETP,data)
- #endif
- #if !defined(_LIBC) && !defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_VMS) && !defined(OPENSSL_SYS_MACINTOSH_CLASSIC) && !defined(OPENSSL_SYS_SUNOS)
- # include <sys/ioctl.h>
- #endif
- #ifdef OPENSSL_SYS_MSDOS
- # include <conio.h>
- #endif
- #ifdef OPENSSL_SYS_VMS
- # include <ssdef.h>
- # include <iodef.h>
- # include <ttdef.h>
- # include <descrip.h>
- struct IOSB {
- short iosb$w_value;
- short iosb$w_count;
- long iosb$l_info;
- };
- #endif
- #ifdef OPENSSL_SYS_SUNOS
- typedef int sig_atomic_t;
- #endif
- #if defined(OPENSSL_SYS_MACINTOSH_CLASSIC) || defined(MAC_OS_GUSI_SOURCE) || defined(OPENSSL_SYS_NETWARE)
- /*
- * This one needs work. As a matter of fact the code is unoperational
- * and this is only a trick to get it compiled.
- * <appro@fy.chalmers.se>
- */
- # define TTY_STRUCT int
- #endif
- #ifndef NX509_SIG
- # define NX509_SIG 32
- #endif
- /* Define globals. They are protected by a lock */
- #ifdef SIGACTION
- static struct sigaction savsig[NX509_SIG];
- #else
- static void (*savsig[NX509_SIG])(int );
- #endif
- #ifdef OPENSSL_SYS_VMS
- static struct IOSB iosb;
- static $DESCRIPTOR(terminal,"TT");
- static long tty_orig[3], tty_new[3]; /* XXX Is there any guarantee that this will always suffice for the actual structures? */
- static long status;
- static unsigned short channel = 0;
- #else
- #if !defined(OPENSSL_SYS_MSDOS) || defined(__DJGPP__)
- static TTY_STRUCT tty_orig,tty_new;
- #endif
- #endif
- static FILE *tty_in, *tty_out;
- static int is_a_tty;
- /* Declare static functions */
- #if !defined(OPENSSL_SYS_WIN16) && !defined(OPENSSL_SYS_WINCE)
- static void read_till_nl(FILE *);
- static void recsig(int);
- static void pushsig(void);
- static void popsig(void);
- #endif
- #if defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_WIN16)
- static int noecho_fgets(char *buf, int size, FILE *tty);
- #endif
- static int read_string_inner(UI *ui, UI_STRING *uis, int echo, int strip_nl);
- static int read_string(UI *ui, UI_STRING *uis);
- static int write_string(UI *ui, UI_STRING *uis);
- static int open_console(UI *ui);
- static int echo_console(UI *ui);
- static int noecho_console(UI *ui);
- static int close_console(UI *ui);
- 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 thingies */
- UI_METHOD *UI_OpenSSL(void)
- {
- return &ui_openssl;
- }
- /* The following function makes sure that info and error strings are printed
- before any prompt. */
- static int write_string(UI *ui, UI_STRING *uis)
- {
- switch (UI_get_string_type(uis))
- {
- case UIT_ERROR:
- case UIT_INFO:
- fputs(UI_get0_output_string(uis), tty_out);
- fflush(tty_out);
- break;
- default:
- break;
- }
- return 1;
- }
- static int read_string(UI *ui, UI_STRING *uis)
- {
- int ok = 0;
- switch (UI_get_string_type(uis))
- {
- case UIT_BOOLEAN:
- fputs(UI_get0_output_string(uis), tty_out);
- fputs(UI_get0_action_string(uis), tty_out);
- fflush(tty_out);
- return read_string_inner(ui, uis,
- UI_get_input_flags(uis) & UI_INPUT_FLAG_ECHO, 0);
- case UIT_PROMPT:
- fputs(UI_get0_output_string(uis), tty_out);
- fflush(tty_out);
- return read_string_inner(ui, uis,
- UI_get_input_flags(uis) & UI_INPUT_FLAG_ECHO, 1);
- case UIT_VERIFY:
- fprintf(tty_out,"Verifying - %s",
- UI_get0_output_string(uis));
- fflush(tty_out);
- if ((ok = read_string_inner(ui, uis,
- UI_get_input_flags(uis) & UI_INPUT_FLAG_ECHO, 1)) <= 0)
- return ok;
- if (strcmp(UI_get0_result_string(uis),
- UI_get0_test_string(uis)) != 0)
- {
- fprintf(tty_out,"Verify failuren");
- fflush(tty_out);
- return 0;
- }
- break;
- default:
- break;
- }
- return 1;
- }
- #if !defined(OPENSSL_SYS_WIN16) && !defined(OPENSSL_SYS_WINCE)
- /* Internal functions to read a string without echoing */
- static void read_till_nl(FILE *in)
- {
- #define SIZE 4
- char buf[SIZE+1];
- do {
- fgets(buf,SIZE,in);
- } while (strchr(buf,'n') == NULL);
- }
- static volatile sig_atomic_t intr_signal;
- #endif
- static int read_string_inner(UI *ui, UI_STRING *uis, int echo, int strip_nl)
- {
- static int ps;
- int ok;
- char result[BUFSIZ];
- int maxsize = BUFSIZ-1;
- #if !defined(OPENSSL_SYS_WIN16) && !defined(OPENSSL_SYS_WINCE)
- char *p;
- intr_signal=0;
- ok=0;
- ps=0;
- pushsig();
- ps=1;
- if (!echo && !noecho_console(ui))
- goto error;
- ps=2;
- result[0]=' ';
- #ifdef OPENSSL_SYS_MSDOS
- if (!echo)
- {
- noecho_fgets(result,maxsize,tty_in);
- p=result; /* FIXME: noecho_fgets doesn't return errors */
- }
- else
- p=fgets(result,maxsize,tty_in);
- #else
- p=fgets(result,maxsize,tty_in);
- #endif
- if(!p)
- goto error;
- if (feof(tty_in)) goto error;
- if (ferror(tty_in)) goto error;
- if ((p=(char *)strchr(result,'n')) != NULL)
- {
- if (strip_nl)
- *p=' ';
- }
- else
- read_till_nl(tty_in);
- if (UI_set_result(ui, uis, result) >= 0)
- ok=1;
- error:
- if (intr_signal == SIGINT)
- ok=-1;
- if (!echo) fprintf(tty_out,"n");
- if (ps >= 2 && !echo && !echo_console(ui))
- ok=0;
- if (ps >= 1)
- popsig();
- #else
- ok=1;
- #endif
- OPENSSL_cleanse(result,BUFSIZ);
- return ok;
- }
- /* Internal functions to open, handle and close a channel to the console. */
- static int open_console(UI *ui)
- {
- CRYPTO_w_lock(CRYPTO_LOCK_UI);
- is_a_tty = 1;
- #if defined(OPENSSL_SYS_MACINTOSH_CLASSIC) || defined(OPENSSL_SYS_VXWORKS) || defined(OPENSSL_SYS_NETWARE)
- tty_in=stdin;
- tty_out=stderr;
- #else
- # ifdef OPENSSL_SYS_MSDOS
- # define DEV_TTY "con"
- # else
- # define DEV_TTY "/dev/tty"
- # endif
- if ((tty_in=fopen(DEV_TTY,"r")) == NULL)
- 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 ariel@columbia.edu reports that solaris
- * can return EINVAL instead. This should be ok */
- if (errno == EINVAL)
- is_a_tty=0;
- else
- #endif
- return 0;
- }
- #endif
- #ifdef OPENSSL_SYS_VMS
- status = sys$assign(&terminal,&channel,0,0);
- if (status != SS$_NORMAL)
- return 0;
- status=sys$qiow(0,channel,IO$_SENSEMODE,&iosb,0,0,tty_orig,12,0,0,0,0);
- if ((status != SS$_NORMAL) || (iosb.iosb$w_value != SS$_NORMAL))
- return 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
- 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))
- return 0;
- #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));
- 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
- 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))
- return 0;
- #endif
- return 1;
- }
- static int close_console(UI *ui)
- {
- if (tty_in != stdin) fclose(tty_in);
- if (tty_out != stderr) fclose(tty_out);
- #ifdef OPENSSL_SYS_VMS
- status = sys$dassgn(channel);
- #endif
- CRYPTO_w_unlock(CRYPTO_LOCK_UI);
- return 1;
- }
- #if !defined(OPENSSL_SYS_WIN16) && !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(OPENSSL_SYS_WIN16) && !defined(OPENSSL_SYS_WINCE)
- static int noecho_fgets(char *buf, int size, FILE *tty)
- {
- int i;
- char *p;
- p=buf;
- for (;;)
- {
- if (size == 0)
- {
- *p=' ';
- break;
- }
- size--;
- #ifdef WIN16TTY
- i=_inchar();
- #else
- i=getch();
- #endif
- if (i == 'r') i='n';
- *(p++)=i;
- if (i == 'n')
- {
- *p=' ';
- 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