/* 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 #if !defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_VMS) && !defined(OPENSSL_SYS_WIN32) # ifdef OPENSSL_UNISTD # include OPENSSL_UNISTD # else # include # 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 /* Define this if you have sigaction() */ /* #define SIGACTION */ /* 06-Apr-92 Luke Brennan Support for VMS */ #include "des_locl.h" #include "cryptlib.h" #include #include #include #include #include #ifdef OPENSSL_SYS_VMS /* prototypes for sys$whatever */ # include # ifdef __DECC # pragma message disable DOLLARID # endif #endif #ifdef WIN_CONSOLE_BUG # include # ifndef OPENSSL_SYS_WINCE # include # endif #endif /* * There are 5 types of terminal interface supported, TERMIO, TERMIOS, VMS, * MSDOS and SGTTY */ #if defined(__sgi) && !defined(TERMIOS) # define TERMIOS # undef TERMIO # undef SGTTY #endif #if defined(linux) && !defined(TERMIO) # undef TERMIOS # define TERMIO # undef SGTTY #endif #ifdef _LIBC # undef TERMIOS # define TERMIO # undef SGTTY #endif #if !defined(TERMIO) && !defined(TERMIOS) && !defined(OPENSSL_SYS_VMS) && !defined(OPENSSL_SYS_MSDOS) # undef TERMIOS # undef TERMIO # define SGTTY #endif #if defined(OPENSSL_SYS_VXWORKS) # undef TERMIOS # undef TERMIO # undef SGTTY #endif #ifdef TERMIOS # include # define TTY_STRUCT struct termios # define TTY_FLAGS c_lflag # define TTY_get(tty,data) tcgetattr(tty,data) # define TTY_set(tty,data) tcsetattr(tty,TCSANOW,data) #endif #ifdef TERMIO # include # define TTY_STRUCT struct termio # define TTY_FLAGS c_lflag # define TTY_get(tty,data) ioctl(tty,TCGETA,data) # define TTY_set(tty,data) ioctl(tty,TCSETA,data) #endif #ifdef SGTTY # include # define TTY_STRUCT struct sgttyb # define TTY_FLAGS sg_flags # define TTY_get(tty,data) ioctl(tty,TIOCGETP,data) # define TTY_set(tty,data) ioctl(tty,TIOCSETP,data) #endif #if !defined(_LIBC) && !defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_VMS) # include #endif #if defined(OPENSSL_SYS_MSDOS) && !defined(__CYGWIN32__) && !defined(OPENSSL_SYS_WINCE) # include # define fgets(a,b,c) noecho_fgets(a,b,c) #endif #ifdef OPENSSL_SYS_VMS # include # include # include # include struct IOSB { short iosb$w_value; short iosb$w_count; long iosb$l_info; }; #endif #ifndef NX509_SIG # define NX509_SIG 32 #endif static void read_till_nl(FILE *); static void recsig(int); static void pushsig(void); static void popsig(void); #if defined(OPENSSL_SYS_MSDOS) static int noecho_fgets(char *buf, int size, FILE *tty); #endif #ifdef SIGACTION static struct sigaction savsig[NX509_SIG]; #else static void (*savsig[NX509_SIG]) (int); #endif static jmp_buf save; int des_read_pw_string(char *buf, int length, const char *prompt, int verify) { char buff[BUFSIZ]; int ret; ret = des_read_pw(buf, buff, (length > BUFSIZ) ? BUFSIZ : length, prompt, verify); OPENSSL_cleanse(buff, BUFSIZ); return (ret); } #ifdef OPENSSL_SYS_WINCE int des_read_pw(char *buf, char *buff, int size, const char *prompt, int verify) { memset(buf, 0, size); memset(buff, 0, size); return (0); } #else /* !OPENSSL_SYS_WINCE */ static void read_till_nl(FILE *in) { # define SIZE 4 char buf[SIZE + 1]; do { fgets(buf, SIZE, in); } while (strchr(buf, '\n') == NULL); } /* return 0 if ok, 1 (or -1) otherwise */ int des_read_pw(char *buf, char *buff, int size, const char *prompt, int verify) { # ifdef OPENSSL_SYS_VMS struct IOSB iosb; $DESCRIPTOR(terminal, "TT"); long tty_orig[3], tty_new[3]; long status; unsigned short channel = 0; # else # if !defined(OPENSSL_SYS_MSDOS) || defined(__DJGPP__) TTY_STRUCT tty_orig, tty_new; # endif # endif int number; int ok; /* * statics are simply to avoid warnings about longjmp clobbering things */ static int ps; int is_a_tty; static FILE *tty; char *p; if (setjmp(save)) { ok = 0; goto error; } number = 5; ok = 0; ps = 0; is_a_tty = 1; tty = NULL; # ifdef OPENSSL_SYS_MSDOS if ((tty = fopen("con", "r")) == NULL) tty = stdin; # elif defined(OPENSSL_SYS_VXWORKS) tty = stdin; # else if ((tty = fopen("/dev/tty", "r")) == NULL) tty = stdin; # endif # if defined(TTY_get) && !defined(OPENSSL_SYS_VMS) if (TTY_get(fileno(tty), &tty_orig) == -1) { # ifdef ENOTTY if (errno == ENOTTY) is_a_tty = 0; else # endif # ifdef EINVAL /* * Ariel Glenn ariel@columbia.edu reports that solaris can return * EINVAL instead. This should be ok */ if (errno == EINVAL) is_a_tty = 0; else # endif return (-1); } memcpy(&(tty_new), &(tty_orig), sizeof(tty_orig)); # endif # ifdef OPENSSL_SYS_VMS status = sys$assign(&terminal, &channel, 0, 0); if (status != SS$_NORMAL) return (-1); status = sys$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 (-1); # endif pushsig(); ps = 1; # ifdef TTY_FLAGS tty_new.TTY_FLAGS &= ~ECHO; # endif # if defined(TTY_set) && !defined(OPENSSL_SYS_VMS) if (is_a_tty && (TTY_set(fileno(tty), &tty_new) == -1)) return (-1); # 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 (-1); # endif ps = 2; while ((!ok) && (number--)) { fputs(prompt, stderr); fflush(stderr); buf[0] = '\0'; fgets(buf, size, tty); if (feof(tty)) goto error; if (ferror(tty)) goto error; if ((p = (char *)strchr(buf, '\n')) != NULL) *p = '\0'; else read_till_nl(tty); if (verify) { fprintf(stderr, "\nVerifying password - %s", prompt); fflush(stderr); buff[0] = '\0'; fgets(buff, size, tty); if (feof(tty)) goto error; if ((p = (char *)strchr(buff, '\n')) != NULL) *p = '\0'; else read_till_nl(tty); if (strcmp(buf, buff) != 0) { fprintf(stderr, "\nVerify failure"); fflush(stderr); break; /* continue; */ } } ok = 1; } error: fprintf(stderr, "\n"); # if 0 perror("fgets(tty)"); # endif /* What can we do if there is an error? */ # if defined(TTY_set) && !defined(OPENSSL_SYS_VMS) if (ps >= 2) TTY_set(fileno(tty), &tty_orig); # endif # ifdef OPENSSL_SYS_VMS if (ps >= 2) status = sys$qiow(0, channel, IO$_SETMODE, &iosb, 0, 0, tty_orig, 12, 0, 0, 0, 0); # endif if (ps >= 1) popsig(); if (stdin != tty) fclose(tty); # ifdef OPENSSL_SYS_VMS status = sys$dassgn(channel); # endif return (!ok); } static void pushsig(void) { int i; # ifdef SIGACTION struct sigaction sa; memset(&sa, 0, sizeof sa); sa.sa_handler = recsig; # endif 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, &sa, &savsig[i]); # else savsig[i] = signal(i, recsig); # endif } # ifdef SIGWINCH signal(SIGWINCH, SIG_DFL); # endif } static void popsig(void) { 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 } } static void recsig(int i) { longjmp(save, 1); } # ifdef OPENSSL_SYS_MSDOS static int noecho_fgets(char *buf, int size, FILE *tty) { int i; char *p; p = buf; for (;;) { if (size == 0) { *p = '\0'; break; } size--; i = getch(); 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 #endif /* !OPENSSL_SYS_WINCE */