]>
Commit | Line | Data |
---|---|---|
989a2c2c | 1 | /* |
569ee3f8 | 2 | * $Source$ |
3 | * $Author$ | |
4 | * $Locker$ | |
5 | * $Header$ | |
989a2c2c | 6 | */ |
7 | ||
8 | #ifndef lint | |
569ee3f8 | 9 | static char *rcsid_userreg_c = "$Header$"; |
989a2c2c | 10 | #endif lint |
11 | ||
12 | #include <curses.h> | |
13 | #include "userreg.h" | |
14 | #include <signal.h> | |
15 | #include <sys/time.h> | |
16 | #include <setjmp.h> | |
6f742fd0 | 17 | #include <ctype.h> |
18 | #include "ureg_err.h" | |
19 | #include <krb.h> | |
20 | #include <errno.h> | |
989a2c2c | 21 | #define EXIT -1 |
22 | ||
23 | ||
569ee3f8 | 24 | struct user user, db_user; |
25 | struct alias alias; | |
26 | char typed_mit_id[100]; | |
989a2c2c | 27 | |
569ee3f8 | 28 | jmp_buf redo; |
29 | int restart(); | |
989a2c2c | 30 | |
569ee3f8 | 31 | extern int errno; |
32 | int user_is_valid = 0; | |
6f742fd0 | 33 | int user_has_login = 0; |
569ee3f8 | 34 | int already_registered = 0; |
989a2c2c | 35 | |
569ee3f8 | 36 | fix_display(sig) |
989a2c2c | 37 | { |
569ee3f8 | 38 | signal(sig, SIG_IGN); /* let us clean up, please */ |
989a2c2c | 39 | noraw(); |
40 | echo(); | |
41 | endwin(); | |
569ee3f8 | 42 | exit(1); |
989a2c2c | 43 | } |
44 | ||
569ee3f8 | 45 | main(argc, argv) |
46 | int argc; | |
47 | char **argv; | |
989a2c2c | 48 | { |
569ee3f8 | 49 | register int ntimes; |
50 | register int reencrypt; | |
51 | char line[100]; | |
6f742fd0 | 52 | int status; |
c16914a2 | 53 | char tmpfirst[100], tmplast[100], tmpmid[100]; |
6f742fd0 | 54 | |
55 | status = ureg_init(); | |
56 | if (status) { | |
57 | com_err(argv[0], status, "while trying to initialize"); | |
58 | exit(1); | |
59 | } | |
569ee3f8 | 60 | |
61 | setup_display(); | |
62 | ||
63 | signal(SIGINT, fix_display); | |
64 | signal(SIGQUIT, fix_display); | |
65 | signal(SIGHUP, fix_display); | |
66 | ||
67 | do { | |
c16914a2 | 68 | |
569ee3f8 | 69 | setjmp(redo); |
70 | reset(); | |
71 | ntimes = 0; | |
72 | ||
73 | display_text(WELCOME); | |
74 | ||
75 | gfirst(); | |
76 | gmi(); | |
77 | glast(); | |
c16914a2 | 78 | strcpy(tmpfirst, user.u_first); |
79 | strcpy(tmplast, user.u_last); | |
80 | FixName(tmplast, tmpfirst, user.u_last, user.u_first, tmpmid); | |
81 | redisp(); | |
82 | ||
569ee3f8 | 83 | gmitid(); |
c16914a2 | 84 | |
569ee3f8 | 85 | while (dolook()) { |
86 | ntimes++; | |
87 | if (ntimes > 3) { | |
88 | display_text_line("Sorry, you still cannot be found in the database."); | |
89 | display_text_line(" "); | |
90 | display_text_line("Please call the account administrator at x1325 for help."); | |
91 | sleep(8); | |
92 | break; | |
93 | } | |
94 | display_text_line(0); /* clear the window */ | |
95 | display_text_line("I'm afraid I was unable to find you in the database."); | |
96 | display_text_line("Do you want to change some input (for example, the spelling"); | |
97 | display_text_line("of part of your name) and try again?"); | |
98 | if (askyn("Do you want to try again ? ") == YES) { | |
99 | reencrypt = 0; | |
100 | display_text_line(0); | |
101 | sprintf(line, | |
102 | "You entered your first name as \"%s\"", user.u_first); | |
103 | display_text_line(line); | |
104 | if (askyn("Do you want to change it? ") == YES) { | |
105 | gfirst(); | |
c16914a2 | 106 | strcpy(tmpfirst, user.u_first); |
107 | strcpy(tmplast, user.u_last); | |
108 | FixName(tmplast, tmpfirst, user.u_last, user.u_first, tmpmid); | |
109 | redisp(); | |
569ee3f8 | 110 | reencrypt = 1; |
111 | } | |
112 | display_text_line(0); | |
113 | sprintf(line, | |
114 | "You entered your middle initial as \"%s\"", user.u_mid_init); | |
115 | display_text_line(line); | |
116 | if (askyn("Do you want to change it? ") == YES) | |
117 | gmi(); | |
118 | display_text_line(0); | |
119 | sprintf(line, | |
120 | "You entered your last name as \"%s\"", user.u_last); | |
121 | display_text_line(line); | |
122 | if (askyn("Do you want to change it? ") == YES) { | |
123 | glast(); | |
c16914a2 | 124 | strcpy(tmpfirst, user.u_first); |
125 | strcpy(tmplast, user.u_last); | |
126 | FixName(tmplast, tmpfirst, user.u_last, user.u_first, tmpmid); | |
127 | redisp(); | |
569ee3f8 | 128 | reencrypt = 1; |
129 | } | |
130 | display_text_line(0); | |
131 | sprintf(line, | |
132 | "You entered your MIT id number as \"%s\"", typed_mit_id); | |
133 | display_text_line(line); | |
134 | if (askyn("Do you want to change it? ") == YES) { | |
135 | gmitid(); | |
136 | reencrypt = 0; | |
137 | } | |
138 | if (reencrypt) { | |
139 | encrypt_mitid(); | |
140 | } | |
141 | } else | |
142 | break; | |
143 | } | |
144 | if (!user_is_valid || already_registered) { | |
145 | qexit(); | |
146 | continue; | |
147 | } | |
148 | redisp(); | |
6f742fd0 | 149 | if (!user_has_login) { |
150 | if (negotiate_login() == -1) { | |
151 | qexit(); | |
152 | continue; | |
153 | } | |
154 | } | |
155 | if (negotiate_passwd() == -1) { | |
569ee3f8 | 156 | qexit(); |
157 | continue; | |
158 | } | |
159 | sleep(1); | |
160 | display_text_line(0); | |
161 | display_text_line("You are now registered to get an Athena account."); | |
162 | sprintf(line, "Please remember your username of \"%s\" and the password", | |
163 | user.u_login); | |
164 | display_text_line(line); | |
165 | display_text_line("you typed in earlier."); | |
c16914a2 | 166 | display_text_line(""); |
167 | display_text_line("Your account should be created within about 12 hours\n"); | |
168 | ||
569ee3f8 | 169 | display_text_line(""); |
170 | display_text_line("You are now finished. Thank you!"); | |
171 | sleep(5); | |
172 | qexit(); | |
173 | } while (getuid() == 0);/* Loop forever if we're root */ | |
174 | restore_display(); | |
175 | exit(0); | |
989a2c2c | 176 | } |
177 | ||
569ee3f8 | 178 | reset() |
179 | { | |
180 | reset_display(); | |
181 | bzero(&user, sizeof(user)); | |
182 | user_is_valid = 0; | |
183 | already_registered = 0; | |
184 | redisp(); | |
989a2c2c | 185 | } |
186 | ||
569ee3f8 | 187 | dolook() |
188 | { | |
189 | /* do the database lookup */ | |
989a2c2c | 190 | |
569ee3f8 | 191 | char line[100]; |
192 | register int result; | |
193 | if (user_is_valid) { | |
194 | /* !! */ | |
195 | return (0); | |
196 | } | |
197 | display_text_line(0); | |
198 | display_text_line( | |
199 | "Looking you up in the database.... This may take a few minutes."); | |
6f742fd0 | 200 | |
c16914a2 | 201 | timer_off(); |
6f742fd0 | 202 | result = verify_user(user.u_first, user.u_last, |
203 | typed_mit_id, user.u_mit_id, db_user.u_login); | |
c16914a2 | 204 | timer_on(); |
6f742fd0 | 205 | switch(result) { |
206 | case 0: | |
207 | display_text_line("You have been located in the user registration database."); | |
208 | user_is_valid = 1; | |
209 | user_has_login = 0; | |
210 | sleep(1); | |
211 | return 0; | |
212 | case UREG_NO_PASSWD_YET: | |
213 | user_is_valid = 1; | |
214 | user_has_login = 1; | |
215 | display_text_line ("You have chosen a login name, but you have not yet chosen a password."); | |
216 | sprintf(line, "Remember: the username you chose was '%s'", | |
217 | db_user.u_login); | |
218 | strcpy(user.u_login, db_user.u_login); | |
219 | display_text_line(line); | |
220 | redisp(); | |
221 | sleep(5); | |
222 | return (0); | |
223 | ||
224 | case UREG_ALREADY_REGISTERED: | |
225 | already_registered = 1; | |
226 | /* | |
227 | * we have to reset this so we dont ask for a | |
228 | * new username | |
229 | */ | |
230 | user_is_valid = 0; | |
231 | display_text_line("You are already registered. An account for you probably already exists"); | |
232 | display_text_line("(if not, it will appear within 12 hours)."); | |
233 | display_text_line(""); | |
234 | display_text_line("Refer to the documents 'Essential Athena' and 'Essential Unix'"); | |
235 | strcpy(user.u_login, db_user.u_login); | |
236 | sprintf(line, "for help logging in. Remember, the username you chose was '%s'", | |
237 | db_user.u_login); | |
238 | display_text_line(line); | |
239 | redisp(); | |
240 | sleep(5); | |
241 | return (0); | |
242 | case UREG_USER_NOT_FOUND: | |
243 | return (1); | |
c16914a2 | 244 | |
6f742fd0 | 245 | case ECONNREFUSED: |
c16914a2 | 246 | case ETIMEDOUT: |
569ee3f8 | 247 | display_text(NETWORK_DOWN); |
6f742fd0 | 248 | return (0); |
249 | ||
250 | default: | |
251 | display_text_line("An unexpected error occurred while trying to access the database"); | |
252 | display_text_line(error_message(result)); | |
253 | redisp(); | |
569ee3f8 | 254 | sleep(5); |
6f742fd0 | 255 | return(1); |
989a2c2c | 256 | } |
989a2c2c | 257 | } |
258 | ||
6f742fd0 | 259 | negotiate_login() |
569ee3f8 | 260 | { |
261 | register int result, result2; | |
262 | int same; | |
263 | char line[100]; | |
264 | char old_login[LOGIN_SIZE]; | |
265 | char old_password[PASSWORD_SIZE]; | |
6f742fd0 | 266 | int i; |
c16914a2 | 267 | char *cp; |
6f742fd0 | 268 | |
569ee3f8 | 269 | display_text(USERNAME_BLURB); |
c16914a2 | 270 | cp = user.u_login; |
271 | if (isalpha(user.u_first[0])) | |
272 | *cp++ = user.u_first[0]; | |
273 | if (isalpha(user.u_mid_init[0])) | |
274 | *cp++ = user.u_mid_init[0]; | |
275 | ||
276 | for (i = 0; user.u_last[i] && cp - user.u_login < 8; i++) { | |
277 | if (isalpha(user.u_last[i])) *cp++ = user.u_last[i]; | |
278 | } | |
279 | ||
6f742fd0 | 280 | for (i=0; user.u_login[i]; i++) |
281 | if (isupper(user.u_login[i])) | |
282 | user.u_login[i]=tolower(user.u_login[i]); | |
283 | ||
569ee3f8 | 284 | strcpy(old_login, user.u_login); |
285 | sprintf(line, "We suggest the username '%s'.", user.u_login); | |
286 | display_text_line(line); | |
287 | display_text_line( | |
288 | "If you are sure you would prefer another username, feel free to enter"); | |
289 | display_text_line( | |
6f742fd0 | 290 | "a different one, but remember that it will remain with you for all the "); |
291 | display_text_line("time you are at MIT."); | |
569ee3f8 | 292 | |
569ee3f8 | 293 | while (1) { |
294 | glogin(); | |
6f742fd0 | 295 | |
569ee3f8 | 296 | display_text_line(0); |
297 | display_text_line("Looking up that username in the database... This may take a few minutes."); | |
c16914a2 | 298 | timer_off(); |
6f742fd0 | 299 | /* |
300 | * Rather than bother SMS with a bunch of different | |
301 | * usernames, all in use, we first try and see if this | |
302 | * guy is known to Kerberos. | |
303 | */ | |
304 | result = get_in_tkt(user.u_login, "", "ATHENA.MIT.EDU", "krbtgt", "ATHENA.MIT.EDU", ""); | |
c16914a2 | 305 | timer_on(); |
6f742fd0 | 306 | if (result != KDC_PR_UNKNOWN) { |
307 | in_use: | |
569ee3f8 | 308 | strcpy(user.u_login, old_login); |
309 | redisp(); | |
6f742fd0 | 310 | display_text_line("I'm sorry, but that username is already taken. Please try again with a different username"); |
569ee3f8 | 311 | continue; |
569ee3f8 | 312 | } |
c16914a2 | 313 | |
6f742fd0 | 314 | /* |
315 | * If he isn't, let's try through SMS. | |
316 | */ | |
c16914a2 | 317 | timer_off(); |
6f742fd0 | 318 | result = grab_login(user.u_first, user.u_last, |
319 | typed_mit_id, user.u_mit_id, | |
320 | user.u_login); | |
c16914a2 | 321 | timer_on(); |
6f742fd0 | 322 | if (result != 0) { |
323 | if (result == UREG_LOGIN_USED) goto in_use; | |
324 | display_text(NETWORK_DOWN); | |
325 | return (qexit()); | |
326 | } else break; | |
569ee3f8 | 327 | } |
569ee3f8 | 328 | /* at this point we have successfully negotiated a username */ |
329 | ||
6f742fd0 | 330 | sprintf(line, "O.K. your username will be \"%s\".", user.u_login); |
569ee3f8 | 331 | display_text_line(0); |
332 | display_text_line(line); | |
333 | redisp(); | |
334 | sleep(3); | |
6f742fd0 | 335 | return 0; |
336 | } | |
337 | negotiate_passwd() | |
338 | { | |
569ee3f8 | 339 | display_text_line(0); |
340 | display_text(PASSWORD_BLURB); | |
6f742fd0 | 341 | |
569ee3f8 | 342 | gpass(); |
6f742fd0 | 343 | display_text_line("Storing password in the database... This may take a few minutes."); |
569ee3f8 | 344 | if (do_replace()) { |
345 | return (-1); | |
346 | } | |
347 | display_text_line("done."); | |
6f742fd0 | 348 | |
989a2c2c | 349 | } |
350 | ||
569ee3f8 | 351 | gfirst() |
352 | { | |
353 | /* input the first name */ | |
354 | char buf[100]; | |
355 | ||
356 | signal(SIGALRM, restart); | |
357 | input("Enter first Name:", buf, 100, FIRSTNAME_TIMEOUT); | |
358 | strncpy(user.u_first, buf, FIRST_NAME_SIZE); | |
359 | user.u_first[FIRST_NAME_SIZE - 1] = '\0'; | |
6f742fd0 | 360 | canon_name(user.u_first); |
569ee3f8 | 361 | redisp(); |
362 | } | |
989a2c2c | 363 | |
569ee3f8 | 364 | glast() |
365 | { | |
366 | /* input the last name */ | |
367 | char buf[100]; | |
368 | ||
369 | signal(SIGALRM, restart); | |
370 | input("Enter last Name:", buf, 100, LASTNAME_TIMEOUT); | |
371 | strncpy(user.u_last, buf, LAST_NAME_SIZE); | |
372 | user.u_last[LAST_NAME_SIZE - 1] = '\0'; | |
6f742fd0 | 373 | canon_name(user.u_last); |
569ee3f8 | 374 | redisp(); |
989a2c2c | 375 | } |
376 | ||
569ee3f8 | 377 | gpass() |
378 | { | |
379 | /* input password */ | |
380 | char old_password[PASSWORD_SIZE]; | |
381 | char new_password[PASSWORD_SIZE]; | |
382 | char new_password_again[PASSWORD_SIZE]; | |
383 | ||
569ee3f8 | 384 | do_input: |
385 | signal(SIGALRM, restart); | |
386 | input_no_echo("Enter password:", new_password, | |
387 | PASSWORD_SIZE, NEW_PASSWORD_TIMEOUT); | |
388 | if (strlen(new_password) < 4) { | |
389 | display_text_line("Please use a password of at least 4 characters."); | |
390 | goto do_input; | |
391 | } | |
392 | signal(SIGALRM, restart); | |
393 | input_no_echo("Enter password again:", new_password_again, | |
394 | PASSWORD_SIZE, REENTER_PASSWORD_TIMEOUT); | |
395 | if (strcmp(new_password, new_password_again)) { | |
396 | display_text_line("Sorry, the two passwords you just typed in don't match."); | |
397 | display_text_line("Please try again."); | |
398 | goto do_input; | |
399 | } | |
569ee3f8 | 400 | |
6f742fd0 | 401 | strcpy(user.u_password, new_password); |
569ee3f8 | 402 | redisp(); |
989a2c2c | 403 | } |
404 | ||
569ee3f8 | 405 | glogin() |
406 | { | |
407 | /* get login name */ | |
408 | register int i; | |
409 | char buf[100]; | |
410 | register char *nbuf = buf; | |
411 | ||
412 | input_login: | |
413 | i = 0; | |
414 | user.u_login[0] = '\0'; | |
415 | nbuf = &buf[0]; | |
416 | signal(SIGALRM, restart); | |
417 | input("Enter username:", buf, 100, USERNAME_TIMEOUT); | |
418 | while (*nbuf != '\0') { | |
22c45376 | 419 | if (!islower(*nbuf) && !isdigit(*nbuf) |
420 | && (*nbuf != '_') && (*nbuf != '.')) { | |
569ee3f8 | 421 | display_text_line("Your username must be all lowercase alphabetic characters."); |
422 | goto input_login; | |
423 | } | |
424 | user.u_login[i] = *nbuf++; | |
425 | i++; | |
426 | if (i > LOGIN_SIZE - 1) { | |
427 | display_text_line("Your username must be no more than 8 characters long."); | |
428 | goto input_login; | |
429 | } | |
430 | } | |
431 | if (i != 0) { | |
432 | user.u_login[i] = '\0'; | |
433 | } | |
c16914a2 | 434 | if (strlen(user.u_login) < 3) { |
435 | display_text_line("Your username must be 3 or more characters long.\n"); | |
569ee3f8 | 436 | goto input_login; |
437 | } | |
569ee3f8 | 438 | redisp(); |
989a2c2c | 439 | } |
440 | ||
569ee3f8 | 441 | gmitid() |
442 | { | |
443 | /* get mid id */ | |
444 | register int i; | |
445 | char buf[100]; | |
446 | register char *nbuf = buf; | |
447 | ||
448 | input_mit_id: | |
449 | signal(SIGALRM, restart); | |
450 | input("Enter MIT Id:", buf, 100, MITID_TIMEOUT); | |
451 | i = 0; | |
452 | nbuf = &buf[0]; | |
453 | while (*nbuf != '\0') { | |
454 | if (*nbuf == ' ' || *nbuf == '-') { | |
455 | nbuf++; | |
456 | continue; | |
457 | } | |
458 | if (!isdigit(*nbuf)) { | |
459 | i = 0; | |
460 | break; | |
461 | } | |
462 | typed_mit_id[i] = *nbuf; | |
463 | nbuf++; | |
464 | i++; | |
465 | } | |
466 | if (i != 9) { | |
467 | display_text_line( | |
468 | "Your MIT id must be a nine-digit number. Please try again."); | |
469 | goto input_mit_id; | |
470 | } | |
471 | typed_mit_id[9] = '\0'; | |
472 | redisp(); | |
473 | encrypt_mitid(); | |
989a2c2c | 474 | } |
475 | ||
569ee3f8 | 476 | encrypt_mitid() |
477 | { | |
478 | char salt[3]; | |
989a2c2c | 479 | |
569ee3f8 | 480 | make_salt(salt, user.u_first, user.u_last); |
481 | strcpy(user.u_mit_id, crypt(&typed_mit_id[2], salt)); | |
989a2c2c | 482 | } |
483 | ||
484 | ||
485 | #define _tolower(c) ((c)|0x60) | |
486 | ||
569ee3f8 | 487 | make_salt(salt, first, last) |
488 | char *salt, *first, *last; | |
989a2c2c | 489 | { |
569ee3f8 | 490 | salt[0] = _tolower(last[0]); |
491 | salt[1] = _tolower(first[0]); | |
989a2c2c | 492 | } |
493 | ||
494 | ||
569ee3f8 | 495 | gmi() |
496 | { | |
497 | /* get middle initial */ | |
498 | char buf[100]; | |
499 | ||
500 | signal(SIGALRM, restart); | |
501 | input("Enter Middle Initial:", buf, 100, MI_TIMEOUT); | |
502 | strncpy(user.u_mid_init, buf, MID_INIT_SIZE); | |
503 | user.u_mid_init[MID_INIT_SIZE - 1] = '\0'; | |
6f742fd0 | 504 | canon_name(user.u_mid_init); |
569ee3f8 | 505 | redisp(); |
989a2c2c | 506 | } |
507 | ||
569ee3f8 | 508 | qexit() |
509 | { | |
510 | /* exit quickly, not saving anything in the database */ | |
511 | bzero(&user, sizeof(user)); | |
512 | typed_mit_id[0] = '\0'; | |
513 | user_is_valid = 0; | |
514 | already_registered = 0; | |
515 | sleep(6); /* give the user a chance to see the screen */ | |
516 | display_text_line(0); | |
517 | return (EXIT); | |
989a2c2c | 518 | } |
519 | ||
520 | ||
569ee3f8 | 521 | do_replace() |
522 | { | |
6f742fd0 | 523 | int status; |
524 | ||
569ee3f8 | 525 | /* |
526 | * replaces a user in the database. If there is an error, it informs | |
527 | * the user and calls qexit(); It returns only if is is successful | |
528 | */ | |
c16914a2 | 529 | timer_off(); |
6f742fd0 | 530 | status = set_password(user.u_first, user.u_last, typed_mit_id, |
c16914a2 | 531 | user.u_mit_id, user.u_password); |
532 | timer_on(); | |
6f742fd0 | 533 | if (status) { |
534 | display_text (NETWORK_DOWN); | |
569ee3f8 | 535 | return (-1); |
6f742fd0 | 536 | } else return 0; |
989a2c2c | 537 | } |
538 | ||
539 | #define _toupper(c) ((c) & ~0x20) | |
540 | ||
569ee3f8 | 541 | lenient_strcmp(string1, string2) |
542 | register char *string1, *string2; | |
989a2c2c | 543 | { |
569ee3f8 | 544 | /* |
545 | * a primitive case insensitive string comparison. It returns only 0 | |
546 | * if the strings are equal (ignoring case) and 1 if they are | |
547 | * different. Also ignores spaces. | |
548 | */ | |
549 | ||
550 | while (1) { | |
551 | if (*string1 == '\0' && *string2 == '\0') { | |
552 | return (0); | |
553 | } | |
554 | if (*string1 == ' ' || *string1 == '.' || *string1 == '-' || *string1 == '\'') { | |
555 | string1++; | |
556 | continue; | |
557 | } | |
558 | if (*string2 == ' ' || *string2 == '.' || *string2 == '-' || *string2 == '\'') { | |
559 | string2++; | |
560 | continue; | |
561 | } | |
562 | if (_toupper(*string1) != _toupper(*string2)) { | |
563 | return (1); | |
564 | } | |
565 | string1++; | |
566 | string2++; | |
567 | } | |
989a2c2c | 568 | } |
569 | ||
569ee3f8 | 570 | /* |
571 | * Input timeout handler. Loop back to asking for the first name. | |
989a2c2c | 572 | */ |
573 | ||
574 | restart() | |
575 | /* Go to asking for first name. */ | |
576 | { | |
569ee3f8 | 577 | qexit(); |
578 | longjmp(redo); | |
989a2c2c | 579 | } |
6f742fd0 | 580 | |
581 | canon_name(cp) | |
582 | register char *cp; | |
583 | { | |
584 | register char *p2 = cp; | |
585 | ||
586 | /* Trim whitespace off both ends. */ | |
587 | for (; *p2 && isspace(*p2); p2++) ; | |
588 | if (*p2) { | |
589 | strcpy(cp, p2); | |
590 | p2 = cp + strlen(cp); | |
591 | --p2; | |
592 | while (p2 >= cp && isspace(*p2)) *(--p2) = '\0'; | |
593 | } | |
594 | /* Make it capitalized */ | |
595 | for (p2=cp; *p2; p2++) { | |
596 | if (isupper(*p2)) *p2 = tolower(*p2); | |
597 | } | |
598 | if (islower(*cp)) *cp=toupper(*cp); | |
599 | } |