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Commit | Line | Data |
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b50f996d | 1 | /* $Id$ |
2 | * | |
3 | * Server for user registration with Moira and Kerberos. | |
4 | * | |
5 | * Copyright (C) 1987-1998 by the Massachusetts Institute of Technology | |
6 | * For copying and distribution information, please see the file | |
7 | * <mit-copyright.h>. | |
8 | */ | |
9 | ||
10 | #include <mit-copyright.h> | |
11 | #include <moira.h> | |
12 | #include <mr_private.h> | |
13 | #include <moira_schema.h> | |
14 | #include <moira_site.h> | |
15 | #include "reg_svr.h" | |
16 | ||
17 | #include <sys/types.h> | |
18 | #include <sys/socket.h> | |
19 | #include <sys/stat.h> | |
20 | #include <sys/time.h> | |
21 | #include <sys/utsname.h> | |
22 | ||
23 | #include <netinet/in.h> | |
24 | #include <netdb.h> | |
25 | ||
26 | #include <ctype.h> | |
27 | #include <errno.h> | |
28 | #include <signal.h> | |
29 | #include <stdarg.h> | |
30 | #include <stdio.h> | |
31 | #include <stdlib.h> | |
32 | #include <string.h> | |
33 | #include <unistd.h> | |
34 | ||
35 | #include <com_err.h> | |
36 | #include <krb.h> | |
37 | ||
38 | EXEC SQL INCLUDE sqlca; | |
39 | ||
40 | RCSID("$Header$"); | |
41 | ||
42 | char *whoami, *hostname, *shorthostname; | |
43 | ||
44 | char *find_usernames(char *first, char *middle, char *last); | |
276949c1 | 45 | int check_username_available(char *username); |
b50f996d | 46 | void fixname(char *name); |
47 | int register_user(int uid, char *username); | |
48 | void mr_com_err(const char *whoami, long code, const char *fmt, va_list pvar); | |
49 | void sigshut(int); | |
50 | ||
51 | reg_client *cl = NULL; | |
52 | enum { RS_RUNNING, RS_SLEEPING, RS_EXITING } state = RS_RUNNING; | |
53 | ||
54 | int main(int argc, char **argv) | |
55 | { | |
56 | int listener, nfds, i, clientid = 0; | |
57 | fd_set readfds, xreadfds; | |
58 | reg_client *clients; | |
59 | int nclients, clientssize; | |
60 | long status; | |
61 | char *db = "moira"; | |
62 | struct utsname uts; | |
63 | struct hostent *h; | |
64 | struct sigaction sa; | |
65 | struct stat st; | |
66 | ||
67 | whoami = strrchr(argv[0], '/'); | |
68 | whoami = whoami ? whoami + 1 : argv[0]; | |
69 | ||
70 | set_com_err_hook(mr_com_err); | |
71 | ||
72 | /* Read keys */ | |
73 | if (!read_rsa_key()) | |
74 | { | |
75 | com_err(whoami, errno, "reading RSA key"); | |
76 | exit(1); | |
77 | } | |
78 | if (!read_hmac_key()) | |
79 | { | |
80 | com_err(whoami, errno, "reading HMAC key"); | |
81 | exit(1); | |
82 | } | |
83 | ||
84 | /* Read error messages */ | |
85 | if (!read_errors()) | |
86 | { | |
87 | com_err(whoami, errno, "reading error messages"); | |
88 | exit(1); | |
89 | } | |
90 | ||
91 | /* Connect to database */ | |
92 | EXEC SQL CONNECT :db IDENTIFIED BY :db; | |
93 | if (sqlca.sqlcode) | |
94 | { | |
95 | char err_msg[256]; | |
96 | int bufsize = 256, msglength = 0; | |
97 | ||
98 | sqlglm(err_msg, &bufsize, &msglength); | |
99 | err_msg[msglength] = 0; | |
100 | com_err(whoami, 0, "SQL error connecting to DBMS:\n%s", err_msg); | |
101 | exit(1); | |
102 | } | |
103 | ||
104 | /* Get my hostname */ | |
105 | uname(&uts); | |
106 | h = gethostbyname(uts.nodename); | |
107 | if (!h) | |
108 | { | |
109 | com_err(whoami, 0, "Couldn't resolve hostname %s", uts.nodename); | |
110 | exit(1); | |
111 | } | |
112 | hostname = lowercase(xstrdup(h->h_name)); | |
113 | shorthostname = xstrdup(hostname); | |
114 | if (strchr(shorthostname, '.')) | |
115 | *strchr(shorthostname, '.') = '\0'; | |
116 | ||
117 | /* Initialize kerberos */ | |
118 | status = init_kerberos(); | |
119 | if (status) | |
120 | { | |
121 | com_err(whoami, status, "initializing kerberos library"); | |
122 | exit(1); | |
123 | } | |
124 | ||
125 | /* Set up listening socket. */ | |
126 | listener = mr_listen("moira_ureg"); | |
127 | if (listener < 0) | |
128 | { | |
129 | com_err(whoami, errno, "couldn't create listening socket"); | |
130 | exit(1); | |
131 | } | |
132 | FD_ZERO(&xreadfds); | |
133 | FD_SET(listener, &xreadfds); | |
134 | nfds = listener + 1; | |
135 | ||
136 | /* Initialize client array. */ | |
137 | nclients = 0; | |
138 | clientssize = 5; | |
139 | clients = malloc(clientssize * sizeof(reg_client)); | |
140 | if (!clients) | |
141 | { | |
142 | com_err(whoami, errno, "creating client array"); | |
143 | exit(1); | |
144 | } | |
145 | ||
146 | /* Set up signal handlers */ | |
147 | sa.sa_flags = 0; | |
148 | sigemptyset(&sa.sa_mask); | |
149 | sa.sa_handler = sigshut; | |
150 | sigaction(SIGTERM, &sa, NULL); | |
151 | sigaction(SIGINT, &sa, NULL); | |
152 | sigaction(SIGHUP, &sa, NULL); | |
153 | sa.sa_handler = SIG_IGN; | |
154 | sigaction(SIGPIPE, &sa, NULL); | |
155 | ||
156 | com_err(whoami, 0, "started (pid %d)", getpid()); | |
157 | com_err(whoami, 0, rcsid); | |
158 | ||
159 | /* Main loop */ | |
160 | while (state != RS_EXITING) | |
161 | { | |
162 | if (state == RS_RUNNING && stat(MOIRA_MOTD_FILE, &st) == 0) | |
163 | { | |
9dcee057 | 164 | state = RS_SLEEPING; |
b50f996d | 165 | com_err(whoami, 0, "found motd. reg_svr is sleeping"); |
166 | } | |
167 | else if (state == RS_SLEEPING && stat(MOIRA_MOTD_FILE, &st) == -1) | |
168 | { | |
9dcee057 | 169 | state = RS_RUNNING; |
b50f996d | 170 | com_err(whoami, 0, "motd gone. reg_svr is running"); |
171 | } | |
172 | ||
173 | memcpy(&readfds, &xreadfds, sizeof(readfds)); | |
174 | if (select(nfds, &readfds, NULL, NULL, NULL) == -1) | |
175 | { | |
176 | if (errno != EINTR) | |
177 | com_err(whoami, errno, "in select"); | |
178 | continue; | |
179 | } | |
180 | ||
181 | if (FD_ISSET(listener, &readfds)) | |
182 | { | |
183 | int newconn, addrlen = sizeof(struct sockaddr_in); | |
184 | struct sockaddr_in addr; | |
185 | ||
186 | newconn = accept(listener, (struct sockaddr *)&addr, &addrlen); | |
187 | if (newconn < 0) | |
188 | com_err(whoami, errno, "accepting new connection"); | |
189 | else | |
190 | { | |
191 | nclients++; | |
192 | if (nclients > clientssize) | |
193 | { | |
194 | clientssize = 2 * clientssize; | |
195 | clients = xrealloc(clients, clientssize * | |
196 | sizeof(reg_client)); | |
197 | } | |
198 | ||
199 | cl = &clients[nclients - 1]; | |
200 | memset(cl, 0, sizeof(reg_client)); | |
201 | cl->fd = newconn; | |
202 | cl->lastmod = time(NULL); | |
203 | cl->clientid = ++clientid; | |
204 | cl->random = init_rand(cl); | |
205 | FD_SET(newconn, &xreadfds); | |
206 | if (newconn >= nfds) | |
207 | nfds = newconn + 1; | |
208 | ||
209 | com_err(whoami, 0, | |
210 | "New connection from %s port %d (now %d client%s)", | |
211 | inet_ntoa(addr.sin_addr), (int)ntohs(addr.sin_port), | |
212 | nclients, nclients != 1 ? "s" : ""); | |
213 | } | |
214 | } | |
215 | ||
216 | for (i = 0; i < nclients; i++) | |
217 | { | |
218 | cl = &clients[i]; | |
219 | if (FD_ISSET(cl->fd, &readfds)) | |
220 | { | |
221 | cl->lastmod = time(NULL); | |
222 | if (!cl->buf) | |
223 | { | |
224 | /* We're just starting */ | |
225 | cl->buf = malloc(3); | |
226 | if (!cl->buf) | |
227 | { | |
228 | com_err(whoami, errno, "allocating read buffer"); | |
229 | reply(cl, INTERNAL_ERROR, "INIT", "c", NULL, | |
230 | "Out of memory"); | |
231 | goto reap; | |
232 | } | |
233 | cl->nread = 0; | |
234 | } | |
235 | ||
236 | if (cl->nread < 3) | |
237 | { | |
238 | /* We haven't read the length byte yet... */ | |
239 | cl->nread += read(cl->fd, cl->buf + cl->nread, | |
240 | 3 - cl->nread); | |
241 | if (cl->nread == 3) | |
242 | { | |
243 | cl->nmax = cl->buf[1] * 256 + cl->buf[2] + 3; | |
244 | cl->buf = realloc(cl->buf, cl->nmax + 3); | |
245 | if (!cl->buf) | |
246 | { | |
247 | com_err(whoami, errno, "reallocating read buffer"); | |
248 | reply(cl, INTERNAL_ERROR, "INIT", "c", NULL, | |
249 | "Out of memory"); | |
250 | goto reap; | |
251 | } | |
252 | } | |
253 | else if (cl->nread == 0) | |
254 | { | |
255 | /* client has closed connection. setting | |
256 | lastmod will cause it to be reaped */ | |
257 | cl->lastmod = 0; | |
258 | } | |
259 | } | |
260 | else | |
261 | { | |
262 | /* We know how long the packet is supposed to be */ | |
263 | cl->nread += read(cl->fd, cl->buf + cl->nread, | |
264 | cl->nmax - cl->nread); | |
265 | if (cl->nread == cl->nmax) | |
266 | { | |
267 | parse_packet(cl, cl->buf[0], cl->nread - 3, cl->buf + 3, | |
268 | state == RS_SLEEPING); | |
269 | free(cl->buf); | |
270 | cl->buf = NULL; | |
271 | } | |
272 | } | |
273 | } | |
274 | ||
275 | reap: | |
276 | if (cl->lastmod < time(NULL) - TIMEOUT) | |
277 | { | |
278 | com_err(whoami, 0, "Closed connection. (now %d client%s)", | |
279 | nclients - 1, nclients != 2 ? "s" : ""); | |
280 | shutdown(cl->fd, 2); | |
281 | close(cl->fd); | |
282 | FD_CLR(cl->fd, &xreadfds); | |
283 | free(cl->buf); | |
284 | free(cl->id); | |
285 | free(cl->username); | |
286 | free(cl->suggestions); | |
287 | free(cl->random); | |
288 | clients[i] = clients[--nclients]; | |
289 | i--; | |
290 | } | |
291 | } | |
292 | cl = NULL; | |
293 | } | |
294 | com_err(whoami, 0, "Exiting."); | |
295 | } | |
296 | ||
297 | void RIFO(reg_client *rc, int argc, char **argv) | |
298 | { | |
299 | EXEC SQL BEGIN DECLARE SECTION; | |
300 | char *ufirst, *umiddle, *ulast, *id; | |
301 | char login[USERS_LOGIN_SIZE], first[USERS_FIRST_SIZE]; | |
302 | char middle[USERS_MIDDLE_SIZE], last[USERS_LAST_SIZE]; | |
303 | char fullname[USERS_FIRST_SIZE + USERS_MIDDLE_SIZE + USERS_LAST_SIZE]; | |
ee47c73a | 304 | char class[USERS_TYPE_SIZE], pin[USERS_PIN_SIZE]; |
1dc2ec48 | 305 | int uid, status, secure, sqlstatus, count; |
b50f996d | 306 | EXEC SQL END DECLARE SECTION; |
307 | ||
308 | if (rc->uid || argc != 4) | |
309 | { | |
310 | reply(rc, PROTOCOL_ERROR, "INIT", "c", NULL); | |
311 | return; | |
312 | } | |
313 | ||
314 | ufirst = argv[0]; | |
315 | umiddle = argv[1]; | |
316 | ulast = argv[2]; | |
317 | id = argv[3]; | |
318 | ||
1dc2ec48 | 319 | EXEC SQL SELECT count(login) INTO :count FROM users WHERE clearid = :id; |
320 | ||
b50f996d | 321 | /* "ORDER BY status" so that if there's both a matching state 0 entry |
322 | and a matching state 3 entry, we'll get the former. */ | |
323 | EXEC SQL DECLARE csr_id CURSOR FOR | |
ee47c73a | 324 | SELECT login, unix_uid, status, secure, pin, first, middle, last, type |
b50f996d | 325 | FROM users WHERE clearid = :id ORDER BY status; |
326 | EXEC SQL OPEN csr_id; | |
327 | while (1) | |
328 | { | |
329 | EXEC SQL FETCH csr_id INTO :login, :uid, :status, | |
ee47c73a | 330 | :secure, :pin, :first, :middle, :last, :class; |
b50f996d | 331 | if (sqlca.sqlcode) |
332 | break; | |
333 | strtrim(login); | |
334 | strtrim(first); | |
335 | strtrim(middle); | |
336 | strtrim(last); | |
337 | strtrim(class); | |
ee47c73a | 338 | strtrim(pin); |
b50f996d | 339 | |
1dc2ec48 | 340 | /* It's possible they have both a deleted account and a status 8 |
341 | * account. We can't compensate for that in the ORDER BY clause | |
342 | * above, so check here. If they have more than one entry and the | |
343 | * first one we get is deleted, skip it. | |
344 | */ | |
345 | if (status == US_DELETED && count > 1) | |
346 | continue; | |
347 | ||
b50f996d | 348 | /* Check names, allowing for the possibility that Moira and the |
349 | user might have them split up differently. eg, Mary/Ann/Singleton | |
350 | vs. Mary Ann/Singleton. */ | |
351 | if (strcasecmp(last, ulast) && strncasecmp(last, ulast, strlen(last)) && | |
352 | strncasecmp(last, ulast, strlen(ulast))) | |
353 | continue; | |
354 | if (strlen(last) > 3 && strlen(ulast) < 3) | |
355 | continue; | |
356 | if (strcasecmp(first, ufirst) && | |
357 | strncasecmp(first, ufirst, strlen(first)) && | |
358 | strncasecmp(first, ufirst, strlen(ufirst))) | |
359 | continue; | |
360 | if (strlen(first) > 3 && strlen(ufirst) < 3) | |
361 | continue; | |
ba41d432 | 362 | if (!*ufirst && !*ulast) |
363 | continue; | |
364 | ||
b50f996d | 365 | /* Ignore the middle name since Moira doesn't have those reliably */ |
366 | break; | |
367 | } | |
368 | sqlstatus = sqlca.sqlcode; | |
369 | EXEC SQL CLOSE csr_id; | |
370 | ||
371 | if (sqlstatus) | |
372 | { | |
373 | reply(rc, NOT_FOUND_IN_DATABASE, "GETN", "d", NULL); | |
374 | return; | |
375 | } | |
376 | ||
377 | switch (status) | |
378 | { | |
379 | case US_REGISTERED: | |
380 | case US_ENROLLED: | |
381 | case US_ENROLL_NOT_ALLOWED: | |
9d5ca0f4 | 382 | case US_REGISTERED_KERBEROS_ONLY: |
b50f996d | 383 | reply(rc, ALREADY_REGISTERED, "INIT", "c", NULL, login); |
384 | return; | |
385 | ||
386 | case US_DELETED: | |
387 | reply(rc, ACCOUNT_DELETED, "INIT", "c", NULL, login); | |
388 | return; | |
389 | ||
390 | case US_NOT_ALLOWED: | |
391 | reply(rc, NOT_ELIGIBLE, "INIT", "c", NULL); | |
392 | return; | |
393 | ||
394 | default: | |
395 | break; | |
396 | } | |
397 | ||
9d5ca0f4 | 398 | rc->user_status = status; |
b50f996d | 399 | rc->uid = uid; |
400 | sprintf(fullname, "%s %s%s%s", first, middle, *middle ? " " : "", last); | |
401 | if (!strcmp(class, "MITS")) | |
402 | strcpy(class, "STAFF"); | |
403 | if (secure == 1) | |
404 | { | |
405 | rc->id = strdup(id); | |
406 | if (!rc->id) | |
407 | { | |
408 | com_err(whoami, errno, "in RIFO"); | |
409 | reply(rc, INTERNAL_ERROR, "INIT", "c", NULL, "Out of memory"); | |
410 | return; | |
411 | } | |
412 | } | |
413 | if (*login != '#') | |
414 | { | |
415 | rc->reserved_username = 1; | |
416 | rc->username = strdup(login); | |
417 | if (!rc->username) | |
418 | { | |
419 | com_err(whoami, errno, "in RIFO"); | |
420 | reply(rc, INTERNAL_ERROR, "INIT", "c", NULL, "Out of memory"); | |
421 | return; | |
422 | } | |
423 | } | |
424 | else | |
425 | { | |
426 | rc->suggestions = find_usernames(first, middle, last); | |
8dc13a24 | 427 | if (!rc->suggestions && errno) |
b50f996d | 428 | { |
429 | com_err(whoami, errno, "in RIFO"); | |
8dc13a24 | 430 | reply(rc, INTERNAL_ERROR, "INIT", "c", NULL, error_message(errno)); |
b50f996d | 431 | return; |
432 | } | |
433 | } | |
434 | ||
435 | if (rc->id) | |
ee47c73a | 436 | { |
437 | if (*pin != '\0') | |
438 | reply(rc, FOUND, "GETI", "c", NULL, fullname, class); | |
439 | else | |
440 | reply(rc, FOUND, "GETW", "c", NULL, fullname, class); | |
441 | } | |
b50f996d | 442 | else if (!rc->username) |
443 | reply(rc, FOUND, "GETL", "c", rc->suggestions, fullname, class); | |
444 | else | |
78b14dbc | 445 | { |
9d5ca0f4 | 446 | if (rc->user_status == US_NO_LOGIN_YET || |
447 | rc->user_status == US_NO_LOGIN_YET_KERBEROS_ONLY) | |
78b14dbc | 448 | { |
449 | status = check_kerberos(login); | |
9d5ca0f4 | 450 | if (status == MR_SUCCESS && |
451 | rc->user_status != US_NO_LOGIN_YET_KERBEROS_ONLY) | |
452 | status = register_user(rc->uid, login); | |
78b14dbc | 453 | if (status == MR_IN_USE) |
454 | { | |
455 | reply(rc, RESERVED_USERNAME_UNAVAILABLE, "INIT", "c", NULL, | |
456 | rc->username); | |
457 | return; | |
458 | } | |
459 | else if (status == MR_DOWN) | |
460 | { | |
461 | reply(rc, DATABASE_CLOSED, "INIT", "c", NULL); | |
462 | return; | |
463 | } | |
464 | else if (status != MR_SUCCESS) | |
465 | { | |
466 | reply(rc, INTERNAL_ERROR, "INIT", "c", NULL, | |
467 | error_message(status)); | |
468 | return; | |
469 | } | |
470 | } | |
471 | reply(rc, FORCED_USERNAME, "GETP", "c", NULL, rc->username); | |
472 | } | |
b50f996d | 473 | } |
474 | ||
475 | void SWRD(reg_client *rc, int argc, char **argv) | |
476 | { | |
477 | char *words[6]; | |
478 | int i; | |
479 | ||
480 | if (!rc->id || argc != 6) | |
481 | { | |
482 | reply(rc, PROTOCOL_ERROR, "INIT", "c", NULL); | |
483 | return; | |
484 | } | |
485 | ||
486 | getwordlist(rc->id, words); | |
487 | for (i = 0; i < 6; i++) | |
488 | { | |
489 | if (strcasecmp(strtrim(argv[i]), words[i])) | |
490 | break; | |
491 | } | |
492 | if (i != 6) | |
493 | { | |
494 | reply(rc, BAD_SIX_WORDS, "GETW", "d", NULL); | |
495 | return; | |
496 | } | |
497 | ||
498 | free(rc->id); | |
499 | rc->id = NULL; | |
500 | if (!rc->username) | |
501 | reply(rc, NO_MESSAGE, "GETL", "c", rc->suggestions); | |
502 | else | |
503 | reply(rc, FORCED_USERNAME, "GETP", "c", NULL, rc->username); | |
504 | } | |
505 | ||
ee47c73a | 506 | void SPIN(reg_client *rc, int argc, char **argv) |
507 | { | |
508 | EXEC SQL BEGIN DECLARE SECTION; | |
509 | char pin[USERS_PIN_SIZE]; | |
510 | EXEC SQL END DECLARE SECTION; | |
511 | ||
512 | if (!rc->id || argc != 1) | |
513 | { | |
514 | reply(rc, PROTOCOL_ERROR, "INIT", "c", NULL); | |
515 | return; | |
516 | } | |
517 | ||
483aa0a7 | 518 | EXEC SQL SELECT pin INTO :pin FROM users WHERE clearid = :rc->id |
1dc2ec48 | 519 | AND status = :rc->user_status; |
ee47c73a | 520 | strtrim(pin); |
521 | if (strcmp(argv[0], pin) != 0) | |
522 | { | |
523 | reply(rc, BAD_PIN, "GETI", "d", NULL); | |
524 | return; | |
525 | } | |
526 | ||
527 | free(rc->id); | |
528 | rc->id = NULL; | |
529 | if (!rc->username) | |
530 | reply(rc, NO_MESSAGE, "GETL", "c", rc->suggestions); | |
531 | else | |
d10e2ed1 | 532 | { |
533 | register_user(rc->uid, rc->username); | |
534 | reply(rc, FORCED_USERNAME, "GETP", "c", NULL, rc->username); | |
535 | } | |
ee47c73a | 536 | } |
537 | ||
276949c1 | 538 | void CLGN(reg_client *rc, int argc, char **argv) |
539 | { | |
540 | int i; | |
541 | char *login; | |
542 | long status; | |
543 | ||
544 | if (!rc->uid || rc->id || rc->username || argc != 1) | |
545 | { | |
546 | reply(rc, PROTOCOL_ERROR, "INIT", "c", NULL); | |
547 | return; | |
548 | } | |
549 | ||
550 | login = argv[0]; | |
551 | ||
552 | /* make sure someone's not trying to overrun reply */ | |
553 | if (strlen(login) > 100) | |
554 | { | |
555 | com_err(whoami, 0, "Buffer overrun attempted? Closing connection"); | |
556 | rc->lastmod = 0; | |
557 | return; | |
558 | } | |
559 | ||
560 | if ((strlen(login) < 3) || (strlen(login) > USERS_LOGIN_SIZE - 1) || | |
561 | (login[0] == '_') || isdigit(login[0])) | |
562 | { | |
563 | reply(rc, BAD_USERNAME, "GETL", "c", rc->suggestions, login, | |
564 | 3, USERS_LOGIN_SIZE - 1); | |
565 | return; | |
566 | } | |
567 | ||
568 | for (i = 0; i < strlen(login); i++) | |
569 | { | |
570 | if (!islower(login[i]) && !isdigit(login[i]) && (login[i] != '_')) | |
571 | { | |
572 | reply(rc, BAD_USERNAME, "GETL", "c", rc->suggestions, login, | |
573 | 3, USERS_LOGIN_SIZE - 1); | |
574 | return; | |
575 | } | |
576 | } | |
577 | ||
578 | status = check_kerberos(login); | |
579 | if (status == MR_SUCCESS) | |
580 | { | |
581 | status = check_username_available(login); | |
582 | if (status == MR_SUCCESS) | |
583 | { | |
584 | reply(rc, USERNAME_AVAILABLE, "LOGC", "c", login, login); | |
585 | return; | |
586 | } | |
587 | } | |
588 | ||
589 | if (status == MR_IN_USE) | |
590 | { | |
591 | if (rc->reserved_username) | |
592 | { | |
593 | reply(rc, RESERVED_USERNAME_UNAVAILABLE, "INIT", "c", NULL, | |
594 | rc->username); | |
595 | return; | |
596 | } | |
597 | reply(rc, USERNAME_UNAVAILABLE, "GETL", "c", rc->suggestions); | |
598 | return; | |
599 | } | |
600 | else if (status == MR_DOWN) | |
601 | { | |
602 | reply(rc, DATABASE_CLOSED, "INIT", "c", NULL); | |
603 | return; | |
604 | } | |
605 | else if (status != MR_SUCCESS) | |
606 | { | |
607 | reply(rc, INTERNAL_ERROR, "INIT", "c", NULL, error_message(status)); | |
608 | return; | |
609 | } | |
610 | } | |
611 | ||
b50f996d | 612 | void LOGN(reg_client *rc, int argc, char **argv) |
613 | { | |
614 | int i; | |
615 | char *login; | |
616 | long status; | |
617 | ||
618 | if (!rc->uid || rc->id || rc->username || argc != 1) | |
619 | { | |
620 | reply(rc, PROTOCOL_ERROR, "INIT", "c", NULL); | |
621 | return; | |
622 | } | |
623 | ||
624 | login = argv[0]; | |
625 | ||
626 | /* make sure someone's not trying to overrun reply */ | |
627 | if (strlen(login) > 100) | |
628 | { | |
629 | com_err(whoami, 0, "Buffer overrun attempted? Closing connection"); | |
630 | rc->lastmod = 0; | |
631 | return; | |
632 | } | |
633 | ||
634 | if ((strlen(login) < 3) || (strlen(login) > USERS_LOGIN_SIZE - 1) || | |
635 | (login[0] == '_') || isdigit(login[0])) | |
636 | { | |
637 | reply(rc, BAD_USERNAME, "GETL", "c", rc->suggestions, login, | |
638 | 3, USERS_LOGIN_SIZE - 1); | |
639 | return; | |
640 | } | |
641 | ||
642 | for (i = 0; i < strlen(login); i++) | |
643 | { | |
644 | if (!islower(login[i]) && !isdigit(login[i]) && (login[i] != '_')) | |
645 | { | |
646 | reply(rc, BAD_USERNAME, "GETL", "c", rc->suggestions, login, | |
647 | 3, USERS_LOGIN_SIZE - 1); | |
648 | return; | |
649 | } | |
650 | } | |
651 | ||
652 | status = check_kerberos(login); | |
653 | if (status == MR_SUCCESS) | |
9d5ca0f4 | 654 | { |
655 | if (rc->user_status == US_NO_LOGIN_YET_KERBEROS_ONLY) | |
656 | EXEC SQL UPDATE users SET login = :login WHERE unix_uid = :rc->uid; | |
657 | else | |
658 | status = register_user(rc->uid, login); | |
659 | } | |
b50f996d | 660 | if (status == MR_IN_USE) |
661 | { | |
662 | if (rc->reserved_username) | |
663 | { | |
664 | reply(rc, RESERVED_USERNAME_UNAVAILABLE, "INIT", "c", NULL, | |
665 | rc->username); | |
666 | return; | |
667 | } | |
668 | reply(rc, USERNAME_UNAVAILABLE, "GETL", "c", rc->suggestions); | |
669 | return; | |
670 | } | |
671 | else if (status == MR_DOWN) | |
672 | { | |
673 | reply(rc, DATABASE_CLOSED, "INIT", "c", NULL); | |
674 | return; | |
675 | } | |
676 | else if (status != MR_SUCCESS) | |
677 | { | |
678 | reply(rc, INTERNAL_ERROR, "INIT", "c", NULL, error_message(status)); | |
679 | return; | |
680 | } | |
681 | ||
682 | rc->username = strdup(login); | |
683 | if (!rc->username) | |
684 | { | |
685 | com_err(whoami, errno, "in LOGN"); | |
686 | reply(rc, INTERNAL_ERROR, "INIT", "c", NULL, "Out of memory"); | |
687 | return; | |
688 | } | |
689 | reply(rc, USERNAME_OK, "GETP", "c", NULL, login); | |
690 | } | |
691 | ||
692 | int ctypes[256] = { | |
693 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* ^@ - ^O */ | |
694 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* ^P - ^_ */ | |
695 | 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, /* SPACE - / */ | |
696 | 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, /* 0 - ? */ | |
697 | 2, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, /* : - O */ | |
698 | 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, /* P - _ */ | |
699 | 2, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, /* ` - o */ | |
700 | 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 0, /* p - ^? */ | |
701 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
702 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
703 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
704 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
705 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
706 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
707 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
708 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
709 | }; | |
710 | ||
711 | void PSWD(reg_client *rc, int argc, char **argv) | |
712 | { | |
713 | long status; | |
714 | char *password = argv[0], *p; | |
715 | EXEC SQL BEGIN DECLARE SECTION; | |
716 | char *login = rc->username; | |
717 | EXEC SQL END DECLARE SECTION; | |
718 | ||
719 | if (!rc->username || rc->id || argc != 1) | |
720 | { | |
721 | reply(rc, PROTOCOL_ERROR, "INIT", "c", NULL); | |
722 | return; | |
723 | } | |
724 | ||
725 | /* password quality checking */ | |
726 | if (strlen(password) < 4) | |
727 | { | |
728 | reply(rc, PASSWORD_SHORT, "GETP", "c", NULL); | |
729 | return; | |
730 | } | |
731 | ||
732 | if (strlen(password) < 7) | |
733 | { | |
734 | for (p = password + 1; *p; p++) | |
735 | { | |
736 | if (ctypes[*p] != ctypes[*(p - 1)]) | |
737 | break; | |
738 | } | |
739 | if (!*p) | |
740 | { | |
741 | reply(rc, PASSWORD_SIMPLE, "GETP", "c", NULL); | |
742 | return; | |
743 | } | |
744 | } | |
745 | ||
746 | if (!strcasecmp(password, "GykoR-66") || | |
747 | !strcasecmp(password, "slaRooBey") || | |
748 | !strcasecmp(password, "krang-its") || | |
749 | !strcasecmp(password, "2HotPeetzas") || | |
750 | !strcasecmp(password, "ItzAGurl")) | |
751 | { | |
752 | reply(rc, PASSWORD_SAMPLE, "GETP", "c", NULL); | |
753 | return; | |
754 | } | |
755 | ||
756 | status = register_kerberos(rc->username, password); | |
9c0c1480 | 757 | if (status == MR_QUALITY) |
758 | { | |
759 | reply(rc, PASSWORD_SIMPLE, "GETP", "c", NULL); | |
760 | return; | |
761 | } | |
762 | else if (status == MR_IN_USE) | |
b50f996d | 763 | { |
764 | reply(rc, RESERVED_USERNAME_UNAVAILABLE, "INIT", "c", NULL, | |
765 | rc->username); | |
766 | return; | |
767 | } | |
768 | else if (status) | |
769 | { | |
770 | com_err(whoami, status, "registering username with Kerberos"); | |
771 | reply(rc, KADM_ERROR, "INIT", "c", NULL, error_message(status)); | |
772 | return; | |
773 | } | |
9d5ca0f4 | 774 | |
775 | if (rc->user_status == US_NO_LOGIN_YET_KERBEROS_ONLY) | |
776 | EXEC SQL UPDATE users SET status = 9 WHERE login = :login; | |
777 | else | |
778 | EXEC SQL UPDATE users SET status = 1 WHERE login = :login; | |
b50f996d | 779 | EXEC SQL COMMIT; |
780 | ||
781 | reply(rc, DONE, "INIT", "c", NULL, rc->username); | |
782 | } | |
783 | ||
784 | void QUIT(reg_client *rc, int argc, char **argv) | |
785 | { | |
786 | } | |
787 | ||
788 | /* Register a user in Moira */ | |
789 | int register_user(int uid, char *username) | |
790 | { | |
93ab973b | 791 | EXEC SQL BEGIN DECLARE SECTION; |
792 | char pin[USERS_PIN_SIZE]; | |
793 | EXEC SQL END DECLARE SECTION; | |
b50f996d | 794 | char uidbuf[10], *qargv[3], *motd = NULL; |
795 | long status; | |
796 | ||
797 | status = mr_connect(hostname); | |
798 | if (status) | |
799 | return status; | |
800 | ||
801 | status = mr_motd(&motd); | |
802 | if (status || motd) | |
803 | { | |
804 | mr_disconnect(); | |
805 | return MR_DOWN; | |
806 | } | |
807 | ||
808 | status = krb_get_svc_in_tkt(REG_SVR_PRINCIPAL, REG_SVR_INSTANCE, | |
809 | krb_realmofhost(hostname), MOIRA_SNAME, | |
8e2c32b2 | 810 | shorthostname, 3, KEYFILE); |
b50f996d | 811 | if (status) |
812 | status += ERROR_TABLE_BASE_krb; | |
813 | else | |
991417e4 | 814 | status = mr_krb5_auth("reg_svr"); |
b50f996d | 815 | if (status) |
816 | { | |
817 | com_err(whoami, status, "authenticating to moira"); | |
818 | mr_disconnect(); | |
819 | return MR_INTERNAL; | |
820 | } | |
821 | ||
93ab973b | 822 | EXEC SQL SELECT pin INTO :pin FROM users WHERE unix_uid = :uid; |
823 | ||
b50f996d | 824 | sprintf(uidbuf, "%d", uid); |
825 | qargv[0] = uidbuf; | |
826 | qargv[1] = username; | |
93ab973b | 827 | |
828 | /* HACK: If user has a PIN set, they're from Sloan. | |
829 | * Give them Exchange poboxes. | |
830 | */ | |
831 | if (*pin != '\0') | |
832 | qargv[2] = "EXCHANGE"; | |
833 | else | |
834 | qargv[2] = "IMAP"; | |
835 | ||
b50f996d | 836 | status = mr_query("register_user", 3, qargv, NULL, NULL); |
837 | mr_disconnect(); | |
838 | return status; | |
839 | } | |
840 | ||
841 | ||
842 | /* Find some typical available usernames */ | |
843 | ||
844 | char *uname_patterns[] = { | |
845 | "FL", /* johndoe */ | |
846 | "fmllllll", /* jmdoe... (last name truncated) */ | |
847 | "flllllll", /* jdoe.... ("") */ | |
848 | "llllllll", /* doe..... ("") */ | |
849 | "fml", /* jmd */ | |
850 | "Fl", /* johnd */ | |
851 | "Lf", /* doej */ | |
852 | "Lfm", /* doejm */ | |
853 | "F", /* john */ | |
854 | }; | |
855 | int num_patterns = sizeof(uname_patterns) / sizeof(char *); | |
856 | ||
857 | char *find_usernames(char *first, char *middle, char *last) | |
858 | { | |
859 | EXEC SQL BEGIN DECLARE SECTION; | |
860 | char username[2 * USERS_LOGIN_SIZE]; | |
861 | int count; | |
862 | EXEC SQL END DECLARE SECTION; | |
863 | int pat, len; | |
864 | char *pp, *up, *fp, *mp, *lp, *unames = NULL; | |
865 | ||
866 | fixname(first); | |
867 | fixname(middle); | |
868 | fixname(last); | |
869 | ||
870 | for (pat = 0; pat < num_patterns; pat++) | |
871 | { | |
872 | up = username; | |
873 | fp = first; | |
874 | mp = middle; | |
875 | lp = last; | |
876 | for (pp = uname_patterns[pat]; *pp; pp++) | |
877 | { | |
878 | switch (*pp) | |
879 | { | |
880 | case 'f': | |
881 | if (*fp) | |
882 | *up++ = *fp++; | |
883 | break; | |
884 | ||
885 | case 'F': | |
886 | if (up - username + strlen(first) < USERS_LOGIN_SIZE) | |
887 | up += sprintf(up, "%s", first); | |
888 | else | |
889 | goto nextpattern; | |
890 | break; | |
891 | ||
892 | case 'm': | |
893 | if (!*middle) | |
894 | goto nextpattern; | |
895 | if (*mp) | |
896 | *up++ = *mp++; | |
897 | break; | |
898 | ||
899 | case 'l': | |
900 | if (*lp) | |
901 | *up++ = *lp++; | |
902 | break; | |
903 | ||
904 | case 'L': | |
905 | if (up - username + strlen(last) < USERS_LOGIN_SIZE) | |
906 | up += sprintf(up, "%s", last); | |
907 | else | |
908 | goto nextpattern; | |
909 | break; | |
910 | } | |
911 | } | |
912 | *up = '\0'; | |
913 | ||
d1d04a6c | 914 | if (strlen(username) < 3 || strlen(username) >= USERS_LOGIN_SIZE) |
b50f996d | 915 | continue; |
916 | ||
917 | EXEC SQL SELECT COUNT(login) INTO :count FROM users | |
918 | WHERE login = :username; | |
919 | if (sqlca.sqlcode) | |
8dc13a24 | 920 | { |
921 | errno = MR_DBMS_ERR; | |
922 | return NULL; | |
923 | } | |
b50f996d | 924 | if (count == 0) |
925 | { | |
926 | EXEC SQL SELECT COUNT(name) INTO :count FROM list | |
927 | WHERE name = :username; | |
928 | if (sqlca.sqlcode) | |
8dc13a24 | 929 | { |
930 | errno = MR_DBMS_ERR; | |
931 | return NULL; | |
932 | } | |
b50f996d | 933 | } |
934 | if (count == 0) | |
935 | { | |
936 | EXEC SQL SELECT COUNT(label) INTO :count FROM filesys | |
937 | WHERE label = :username; | |
938 | if (sqlca.sqlcode) | |
8dc13a24 | 939 | { |
940 | errno = MR_DBMS_ERR; | |
941 | return NULL; | |
942 | } | |
b50f996d | 943 | } |
944 | ||
945 | if (count == 0) | |
946 | { | |
947 | if (unames) | |
948 | { | |
949 | unames = realloc(unames, strlen(unames) + strlen(username) + 3); | |
950 | if (!unames) | |
951 | return NULL; | |
952 | strcat(unames, ", "); | |
953 | strcat(unames, username); | |
954 | } | |
955 | else | |
956 | { | |
957 | unames = strdup(username); | |
958 | if (!unames) | |
959 | return NULL; | |
960 | } | |
961 | } | |
962 | ||
963 | nextpattern: | |
964 | ; | |
965 | } | |
966 | ||
8dc13a24 | 967 | /* unames will be NULL if we couldn't suggest a username. Clear |
968 | errno so the caller can distinguish this from an error case. */ | |
969 | errno = 0; | |
b50f996d | 970 | return unames; |
971 | } | |
972 | ||
276949c1 | 973 | /* This does the database-side checks to make sure a username is |
974 | * available. | |
975 | */ | |
976 | int check_username_available(char *username) | |
977 | { | |
978 | int count; | |
979 | ||
980 | EXEC SQL SELECT COUNT(login) INTO :count FROM users | |
981 | WHERE login = :username; | |
982 | if (sqlca.sqlcode) | |
983 | return MR_DBMS_ERR; | |
984 | if (count != 0) | |
985 | return MR_IN_USE; | |
986 | ||
987 | EXEC SQL SELECT COUNT(name) INTO :count FROM list | |
988 | WHERE name = :username; | |
989 | if (sqlca.sqlcode) | |
990 | return MR_DBMS_ERR; | |
991 | if (count != 0) | |
992 | return MR_IN_USE; | |
993 | ||
994 | EXEC SQL SELECT COUNT(label) INTO :count FROM filesys | |
995 | WHERE label = :username; | |
996 | if (sqlca.sqlcode) | |
997 | return MR_DBMS_ERR; | |
998 | if (count != 0) | |
999 | return MR_IN_USE; | |
1000 | ||
1001 | return MR_SUCCESS; | |
1002 | } | |
1003 | ||
b50f996d | 1004 | void fixname(char *name) |
1005 | { | |
1006 | char *s, *d; | |
1007 | ||
1008 | for (s = d = name; *s; s++) | |
1009 | { | |
1010 | if (isalnum(*s)) | |
1011 | *d++ = tolower(*s); | |
1012 | } | |
1013 | *d = '\0'; | |
1014 | } | |
1015 | ||
1016 | void *xmalloc(size_t bytes) | |
1017 | { | |
1018 | void *buf = malloc(bytes); | |
1019 | ||
1020 | if (buf) | |
1021 | return buf; | |
1022 | ||
1023 | com_err(whoami, errno, "in xmalloc"); | |
1024 | exit(1); | |
1025 | } | |
1026 | ||
1027 | void *xrealloc(void *ptr, size_t bytes) | |
1028 | { | |
1029 | void *buf = realloc(ptr, bytes); | |
1030 | ||
1031 | if (buf) | |
1032 | return buf; | |
1033 | ||
1034 | com_err(whoami, errno, "in xrealloc"); | |
1035 | exit(1); | |
1036 | } | |
1037 | ||
1038 | char *xstrdup(char *str) | |
1039 | { | |
1040 | char *buf = strdup(str); | |
1041 | ||
1042 | if (buf) | |
1043 | return buf; | |
1044 | ||
1045 | com_err(whoami, errno, "in xstrdup"); | |
1046 | exit(1); | |
1047 | } | |
1048 | ||
1049 | void mr_com_err(const char *whoami, long code, const char *fmt, va_list pvar) | |
1050 | { | |
1051 | if (whoami) | |
1052 | { | |
1053 | fputs(whoami, stderr); | |
1054 | if (cl) | |
1055 | fprintf(stderr, "[#%d]", cl->clientid); | |
1056 | fputs(": ", stderr); | |
1057 | } | |
1058 | if (code) { | |
1059 | fputs(error_message(code), stderr); | |
1060 | fputs(" ", stderr); | |
1061 | } | |
1062 | if (fmt) | |
1063 | vfprintf(stderr, fmt, pvar); | |
1064 | putc('\n', stderr); | |
1065 | } | |
1066 | ||
1067 | void sigshut(int sig) | |
1068 | { | |
1069 | state = RS_EXITING; | |
1070 | } |