1 /* crypto/des/read_pwd.c */
2 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3 * All rights reserved.
4 *
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
8 *
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 *
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
22 *
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
25 * are met:
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 *
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51 * SUCH DAMAGE.
52 *
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
57 */
58
59 #include <openssl/e_os2.h>
60 #if !defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_VMS) && !defined(OPENSSL_SYS_WIN32)
61 #ifdef OPENSSL_UNISTD
62 # include OPENSSL_UNISTD
63 #else
64 # include <unistd.h>
65 #endif
66 /* If unistd.h defines _POSIX_VERSION, we conclude that we
67 * are on a POSIX system and have sigaction and termios. */
68 #if defined(_POSIX_VERSION)
69
70 # define SIGACTION
71 # if !defined(TERMIOS) && !defined(TERMIO) && !defined(SGTTY)
72 # define TERMIOS
73 # endif
74
75 #endif
76 #endif
77
78 /* #define SIGACTION */ /* Define this if you have sigaction() */
79
80 #ifdef WIN16TTY
81 #undef OPENSSL_SYS_WIN16
82 #undef _WINDOWS
83 #include <graph.h>
84 #endif
85
86 /* 06-Apr-92 Luke Brennan Support for VMS */
87 #include "des_locl.h"
88 #include "cryptlib.h"
89 #include <signal.h>
90 #include <stdio.h>
91 #include <string.h>
92 #include <setjmp.h>
93 #include <errno.h>
94
95 #ifdef OPENSSL_SYS_VMS /* prototypes for sys$whatever */
96 #include <starlet.h>
97 #ifdef __DECC
98 #pragma message disable DOLLARID
99 #endif
100 #endif
101
102 #ifdef WIN_CONSOLE_BUG
103 #include <windows.h>
104 #ifndef OPENSSL_SYS_WINCE
105 #include <wincon.h>
106 #endif
107 #endif
108
109
110 /* There are 5 types of terminal interface supported,
111 * TERMIO, TERMIOS, VMS, MSDOS and SGTTY
112 */
113
114 #if defined(__sgi) && !defined(TERMIOS)
115 #define TERMIOS
116 #undef TERMIO
117 #undef SGTTY
118 #endif
119
120 #if defined(linux) && !defined(TERMIO)
121 #undef TERMIOS
122 #define TERMIO
123 #undef SGTTY
124 #endif
125
126 #ifdef _LIBC
127 #undef TERMIOS
128 #define TERMIO
129 #undef SGTTY
130 #endif
131
132 #if !defined(TERMIO) && !defined(TERMIOS) && !defined(OPENSSL_SYS_VMS) && !defined(OPENSSL_SYS_MSDOS) && !defined(MAC_OS_pre_X) && !defined(MAC_OS_GUSI_SOURCE)
133 #undef TERMIOS
134 #undef TERMIO
135 #define SGTTY
136 #endif
137
138 #if defined(OPENSSL_SYS_VXWORKS)
139 #undef TERMIOS
140 #undef TERMIO
141 #undef SGTTY
142 #endif
143
144 #ifdef TERMIOS
145 #include <termios.h>
146 #define TTY_STRUCT struct termios
147 #define TTY_FLAGS c_lflag
148 #define TTY_get(tty,data) tcgetattr(tty,data)
149 #define TTY_set(tty,data) tcsetattr(tty,TCSANOW,data)
150 #endif
151
152 #ifdef TERMIO
153 #include <termio.h>
154 #define TTY_STRUCT struct termio
155 #define TTY_FLAGS c_lflag
156 #define TTY_get(tty,data) ioctl(tty,TCGETA,data)
157 #define TTY_set(tty,data) ioctl(tty,TCSETA,data)
158 #endif
159
160 #ifdef SGTTY
161 #include <sgtty.h>
162 #define TTY_STRUCT struct sgttyb
163 #define TTY_FLAGS sg_flags
164 #define TTY_get(tty,data) ioctl(tty,TIOCGETP,data)
165 #define TTY_set(tty,data) ioctl(tty,TIOCSETP,data)
166 #endif
167
168 #if !defined(_LIBC) && !defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_VMS) && !defined(MAC_OS_pre_X)
169 #include <sys/ioctl.h>
170 #endif
171
172 #if defined(OPENSSL_SYS_MSDOS) && !defined(__CYGWIN32__) && !defined(OPENSSL_SYS_WINCE)
173 #include <conio.h>
174 #define fgets(a,b,c) noecho_fgets(a,b,c)
175 #endif
176
177 #ifdef OPENSSL_SYS_VMS
178 #include <ssdef.h>
179 #include <iodef.h>
180 #include <ttdef.h>
181 #include <descrip.h>
182 struct IOSB {
183 short iosb$w_value;
184 short iosb$w_count;
185 long iosb$l_info;
186 };
187 #endif
188
189 #if defined(MAC_OS_pre_X) || defined(MAC_OS_GUSI_SOURCE)
190 /*
191 * This one needs work. As a matter of fact the code is unoperational
192 * and this is only a trick to get it compiled.
193 * <appro@fy.chalmers.se>
194 */
195 #define TTY_STRUCT int
196 #endif
197
198 #ifndef NX509_SIG
199 #define NX509_SIG 32
200 #endif
201
202 static void read_till_nl(FILE *);
203 static void recsig(int);
204 static void pushsig(void);
205 static void popsig(void);
206 #if defined(OPENSSL_SYS_MSDOS) && !defined(OPENSSL_SYS_WIN16)
207 static int noecho_fgets(char *buf, int size, FILE *tty);
208 #endif
209 #ifdef SIGACTION
210 static struct sigaction savsig[NX509_SIG];
211 #else
212 static void (*savsig[NX509_SIG])(int );
213 #endif
214 static jmp_buf save;
215
des_read_pw_string(char * buf,int length,const char * prompt,int verify)216 int des_read_pw_string(char *buf, int length, const char *prompt,
217 int verify)
218 {
219 char buff[BUFSIZ];
220 int ret;
221
222 ret=des_read_pw(buf,buff,(length>BUFSIZ)?BUFSIZ:length,prompt,verify);
223 OPENSSL_cleanse(buff,BUFSIZ);
224 return(ret);
225 }
226
227 #ifdef OPENSSL_SYS_WINCE
228
des_read_pw(char * buf,char * buff,int size,const char * prompt,int verify)229 int des_read_pw(char *buf, char *buff, int size, const char *prompt, int verify)
230 {
231 memset(buf,0,size);
232 memset(buff,0,size);
233 return(0);
234 }
235
236 #elif defined(OPENSSL_SYS_WIN16)
237
des_read_pw(char * buf,char * buff,int size,char * prompt,int verify)238 int des_read_pw(char *buf, char *buff, int size, char *prompt, int verify)
239 {
240 memset(buf,0,size);
241 memset(buff,0,size);
242 return(0);
243 }
244
245 #else /* !OPENSSL_SYS_WINCE && !OPENSSL_SYS_WIN16 */
246
read_till_nl(FILE * in)247 static void read_till_nl(FILE *in)
248 {
249 #define SIZE 4
250 char buf[SIZE+1];
251
252 do {
253 fgets(buf,SIZE,in);
254 } while (strchr(buf,'\n') == NULL);
255 }
256
257
258 /* return 0 if ok, 1 (or -1) otherwise */
des_read_pw(char * buf,char * buff,int size,const char * prompt,int verify)259 int des_read_pw(char *buf, char *buff, int size, const char *prompt,
260 int verify)
261 {
262 #ifdef OPENSSL_SYS_VMS
263 struct IOSB iosb;
264 $DESCRIPTOR(terminal,"TT");
265 long tty_orig[3], tty_new[3];
266 long status;
267 unsigned short channel = 0;
268 #else
269 #if !defined(OPENSSL_SYS_MSDOS) || defined(__DJGPP__)
270 TTY_STRUCT tty_orig,tty_new;
271 #endif
272 #endif
273 int number;
274 int ok;
275 /* statics are simply to avoid warnings about longjmp clobbering
276 things */
277 static int ps;
278 int is_a_tty;
279 static FILE *tty;
280 char *p;
281
282 if (setjmp(save))
283 {
284 ok=0;
285 goto error;
286 }
287
288 number=5;
289 ok=0;
290 ps=0;
291 is_a_tty=1;
292 tty=NULL;
293
294 #ifdef OPENSSL_SYS_MSDOS
295 if ((tty=fopen("con","r")) == NULL)
296 tty=stdin;
297 #elif defined(MAC_OS_pre_X) || defined(OPENSSL_SYS_VXWORKS)
298 tty=stdin;
299 #else
300 #ifndef OPENSSL_SYS_MPE
301 if ((tty=fopen("/dev/tty","r")) == NULL)
302 #endif
303 tty=stdin;
304 #endif
305
306 #if defined(TTY_get) && !defined(OPENSSL_SYS_VMS)
307 if (TTY_get(fileno(tty),&tty_orig) == -1)
308 {
309 #ifdef ENOTTY
310 if (errno == ENOTTY)
311 is_a_tty=0;
312 else
313 #endif
314 #ifdef EINVAL
315 /* Ariel Glenn ariel@columbia.edu reports that solaris
316 * can return EINVAL instead. This should be ok */
317 if (errno == EINVAL)
318 is_a_tty=0;
319 else
320 #endif
321 return(-1);
322 }
323 memcpy(&(tty_new),&(tty_orig),sizeof(tty_orig));
324 #endif
325 #ifdef OPENSSL_SYS_VMS
326 status = sys$assign(&terminal,&channel,0,0);
327 if (status != SS$_NORMAL)
328 return(-1);
329 status=sys$qiow(0,channel,IO$_SENSEMODE,&iosb,0,0,tty_orig,12,0,0,0,0);
330 if ((status != SS$_NORMAL) || (iosb.iosb$w_value != SS$_NORMAL))
331 return(-1);
332 #endif
333
334 pushsig();
335 ps=1;
336
337 #ifdef TTY_FLAGS
338 tty_new.TTY_FLAGS &= ~ECHO;
339 #endif
340
341 #if defined(TTY_set) && !defined(OPENSSL_SYS_VMS)
342 if (is_a_tty && (TTY_set(fileno(tty),&tty_new) == -1))
343 #ifdef OPENSSL_SYS_MPE
344 ; /* MPE lies -- echo really has been disabled */
345 #else
346 return(-1);
347 #endif
348 #endif
349 #ifdef OPENSSL_SYS_VMS
350 tty_new[0] = tty_orig[0];
351 tty_new[1] = tty_orig[1] | TT$M_NOECHO;
352 tty_new[2] = tty_orig[2];
353 status = sys$qiow(0,channel,IO$_SETMODE,&iosb,0,0,tty_new,12,0,0,0,0);
354 if ((status != SS$_NORMAL) || (iosb.iosb$w_value != SS$_NORMAL))
355 return(-1);
356 #endif
357 ps=2;
358
359 while ((!ok) && (number--))
360 {
361 fputs(prompt,stderr);
362 fflush(stderr);
363
364 buf[0]='\0';
365 fgets(buf,size,tty);
366 if (feof(tty)) goto error;
367 if (ferror(tty)) goto error;
368 if ((p=(char *)strchr(buf,'\n')) != NULL)
369 *p='\0';
370 else read_till_nl(tty);
371 if (verify)
372 {
373 fprintf(stderr,"\nVerifying password - %s",prompt);
374 fflush(stderr);
375 buff[0]='\0';
376 fgets(buff,size,tty);
377 if (feof(tty)) goto error;
378 if ((p=(char *)strchr(buff,'\n')) != NULL)
379 *p='\0';
380 else read_till_nl(tty);
381
382 if (strcmp(buf,buff) != 0)
383 {
384 fprintf(stderr,"\nVerify failure");
385 fflush(stderr);
386 break;
387 /* continue; */
388 }
389 }
390 ok=1;
391 }
392
393 error:
394 fprintf(stderr,"\n");
395 #if 0
396 perror("fgets(tty)");
397 #endif
398 /* What can we do if there is an error? */
399 #if defined(TTY_set) && !defined(OPENSSL_SYS_VMS)
400 if (ps >= 2) TTY_set(fileno(tty),&tty_orig);
401 #endif
402 #ifdef OPENSSL_SYS_VMS
403 if (ps >= 2)
404 status = sys$qiow(0,channel,IO$_SETMODE,&iosb,0,0
405 ,tty_orig,12,0,0,0,0);
406 #endif
407
408 if (ps >= 1) popsig();
409 if (stdin != tty) fclose(tty);
410 #ifdef OPENSSL_SYS_VMS
411 status = sys$dassgn(channel);
412 #endif
413 return(!ok);
414 }
415
pushsig(void)416 static void pushsig(void)
417 {
418 int i;
419 #ifdef SIGACTION
420 struct sigaction sa;
421
422 memset(&sa,0,sizeof sa);
423 sa.sa_handler=recsig;
424 #endif
425
426 for (i=1; i<NX509_SIG; i++)
427 {
428 #ifdef SIGUSR1
429 if (i == SIGUSR1)
430 continue;
431 #endif
432 #ifdef SIGUSR2
433 if (i == SIGUSR2)
434 continue;
435 #endif
436 #ifdef SIGACTION
437 sigaction(i,&sa,&savsig[i]);
438 #else
439 savsig[i]=signal(i,recsig);
440 #endif
441 }
442
443 #ifdef SIGWINCH
444 signal(SIGWINCH,SIG_DFL);
445 #endif
446 }
447
popsig(void)448 static void popsig(void)
449 {
450 int i;
451
452 for (i=1; i<NX509_SIG; i++)
453 {
454 #ifdef SIGUSR1
455 if (i == SIGUSR1)
456 continue;
457 #endif
458 #ifdef SIGUSR2
459 if (i == SIGUSR2)
460 continue;
461 #endif
462 #ifdef SIGACTION
463 sigaction(i,&savsig[i],NULL);
464 #else
465 signal(i,savsig[i]);
466 #endif
467 }
468 }
469
recsig(int i)470 static void recsig(int i)
471 {
472 longjmp(save,1);
473 #ifdef LINT
474 i=i;
475 #endif
476 }
477
478 #ifdef OPENSSL_SYS_MSDOS
noecho_fgets(char * buf,int size,FILE * tty)479 static int noecho_fgets(char *buf, int size, FILE *tty)
480 {
481 int i;
482 char *p;
483
484 p=buf;
485 for (;;)
486 {
487 if (size == 0)
488 {
489 *p='\0';
490 break;
491 }
492 size--;
493 #ifdef WIN16TTY
494 i=_inchar();
495 #else
496 i=getch();
497 #endif
498 if (i == '\r') i='\n';
499 *(p++)=i;
500 if (i == '\n')
501 {
502 *p='\0';
503 break;
504 }
505 }
506 #ifdef WIN_CONSOLE_BUG
507 /* Win95 has several evil console bugs: one of these is that the
508 * last character read using getch() is passed to the next read: this is
509 * usually a CR so this can be trouble. No STDIO fix seems to work but
510 * flushing the console appears to do the trick.
511 */
512 {
513 HANDLE inh;
514 inh = GetStdHandle(STD_INPUT_HANDLE);
515 FlushConsoleInputBuffer(inh);
516 }
517 #endif
518 return(strlen(buf));
519 }
520 #endif
521 #endif /* !OPENSSL_SYS_WINCE && !WIN16 */
522