/* 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.] */ #if !defined(MSDOS) && !defined(VMS) && !defined(WIN32) #include /* 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 SIGACTION */ /* Define this if you have sigaction() */ #ifdef WIN16TTY #undef WIN16 #undef _WINDOWS #include #endif /* 06-Apr-92 Luke Brennan Support for VMS */ #include "des_locl.h" #include "cryptlib.h" #include #include #include #include #include #ifdef VMS /* prototypes for sys$whatever */ #include #ifdef __DECC #pragma message disable DOLLARID #endif #endif #ifdef WIN_CONSOLE_BUG #include #include #endif /* There are 5 types of terminal interface supported, * TERMIO, TERMIOS, VMS, MSDOS and SGTTY */ #if defined(__sgi) && !defined(TERMIOS) #define TERMIOS #undef TERMIO #undef SGTTY #endif #if defined(linux) && !defined(TERMIO) #undef TERMIOS #define TERMIO #undef SGTTY #endif #ifdef _LIBC #undef TERMIOS #define TERMIO #undef SGTTY #endif #if !defined(TERMIO) && !defined(TERMIOS) && !defined(VMS) && !defined(MSDOS) #undef TERMIOS #undef TERMIO #define SGTTY #endif #ifdef TERMIOS #include #define TTY_STRUCT struct termios #define TTY_FLAGS c_lflag #define TTY_get(tty,data) tcgetattr(tty,data) #define TTY_set(tty,data) tcsetattr(tty,TCSANOW,data) #endif #ifdef TERMIO #include #define TTY_STRUCT struct termio #define TTY_FLAGS c_lflag #define TTY_get(tty,data) ioctl(tty,TCGETA,data) #define TTY_set(tty,data) ioctl(tty,TCSETA,data) #endif #ifdef SGTTY #include #define TTY_STRUCT struct sgttyb #define TTY_FLAGS sg_flags #define TTY_get(tty,data) ioctl(tty,TIOCGETP,data) #define TTY_set(tty,data) ioctl(tty,TIOCSETP,data) #endif #if !defined(_LIBC) && !defined(MSDOS) && !defined(VMS) #include #endif #ifdef MSDOS #include #define fgets(a,b,c) noecho_fgets(a,b,c) #endif #ifdef VMS #include #include #include #include struct IOSB { short iosb$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(MSDOS) && !defined(WIN16) static int noecho_fgets(char *buf, int size, FILE *tty); #endif #ifdef SIGACTION static struct sigaction savsig[NX509_SIG]; #else # ifndef NOPROTO static void (*savsig[NX509_SIG])(int ); # else static void (*savsig[NX509_SIG])(); # endif #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); memset(buff,0,BUFSIZ); return(ret); } #ifndef WIN16 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 VMS struct IOSB iosb; $DESCRIPTOR(terminal,"TT"); long tty_orig[3], tty_new[3]; long status; unsigned short channel = 0; #else #ifndef MSDOS TTY_STRUCT tty_orig,tty_new; #endif #endif int number; int ok; /* statics are simply to avoid warnings about longjmp clobbering things */ static int ps; int is_a_tty; static FILE *tty; char *p; if (setjmp(save)) { ok=0; goto error; } number=5; ok=0; ps=0; is_a_tty=1; tty=NULL; #ifndef MSDOS if ((tty=fopen("/dev/tty","r")) == NULL) tty=stdin; #else /* MSDOS */ if ((tty=fopen("con","r")) == NULL) tty=stdin; #endif /* MSDOS */ #if defined(TTY_get) && !defined(VMS) if (TTY_get(fileno(tty),&tty_orig) == -1) { #ifdef ENOTTY if (errno == ENOTTY) is_a_tty=0; else #endif #ifdef EINVAL /* Ariel Glenn ariel@columbia.edu reports that solaris * can return EINVAL instead. This should be ok */ if (errno == EINVAL) is_a_tty=0; else #endif return(-1); } memcpy(&(tty_new),&(tty_orig),sizeof(tty_orig)); #endif #ifdef VMS status = sys$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(VMS) if (is_a_tty && (TTY_set(fileno(tty),&tty_new) == -1)) return(-1); #endif #ifdef 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"); #ifdef DEBUG perror("fgets(tty)"); #endif /* What can we do if there is an error? */ #if defined(TTY_set) && !defined(VMS) if (ps >= 2) TTY_set(fileno(tty),&tty_orig); #endif #ifdef 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 VMS status = sys$dassgn(channel); #endif return(!ok); } #else /* WIN16 */ int des_read_pw(char *buf, char *buff, int size, char *prompt, int verify) { memset(buf,0,size); memset(buff,0,size); return(0); } #endif 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