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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) && !defin
ed(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 | |
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 | |
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 | |
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 | |
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 */ | |
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 | |
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 | |
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 | |
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 | |
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 */ | |
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