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1 | /* | |
2 | * $Source$ | |
3 | * $Author$ | |
4 | * $Header$ | |
5 | * | |
6 | * Copyright (C) 1987, 1988 by the Massachusetts Institute of Technology | |
7 | * For copying and distribution information, please see the file | |
8 | * <mit-copyright.h>. | |
9 | * | |
10 | * Server for user registration with Moira and Kerberos. | |
11 | * | |
12 | * This program is a client of the Kerberos admin_server and a | |
13 | * server for the userreg program. It is not a client of the | |
14 | * Moira server as it is linked with libmoiraglue which bypasses | |
15 | * the network protocol. | |
16 | */ | |
17 | ||
18 | #ifndef lint | |
19 | static char *rcsid_reg_svr_c = "$Header$"; | |
20 | #endif lint | |
21 | ||
22 | #include <mit-copyright.h> | |
23 | #include <stdio.h> | |
24 | #include <strings.h> | |
25 | #include <ctype.h> | |
26 | #include <sys/time.h> | |
27 | #include <sys/types.h> | |
28 | #include <sys/file.h> | |
29 | #include <krb.h> | |
30 | #include <des.h> | |
31 | #include <kadm.h> | |
32 | #include <kadm_err.h> | |
33 | #include <krb_err.h> | |
34 | #include <errno.h> | |
35 | #include "moira.h" | |
36 | #include "moira_site.h" | |
37 | #include "reg_svr.h" | |
38 | ||
39 | extern char admin_errmsg[]; | |
40 | ||
41 | void reg_com_err_hook(); | |
42 | ||
43 | main(argc,argv) | |
44 | int argc; | |
45 | char *argv[]; | |
46 | { | |
47 | struct msg message; /* Storage for parsed packet */ | |
48 | int status = SUCCESS; /* Error status */ | |
49 | char retval[BUFSIZ]; /* Buffer to hold return message for client */ | |
50 | ||
51 | void req_initialize(); /* Initialize request layer */ | |
52 | void get_request(); /* Get a request */ | |
53 | void report(); /* Respond to a request */ | |
54 | ||
55 | /* Initialize */ | |
56 | whoami = argv[0]; | |
57 | ||
58 | /* Error messages sent one line at a time */ | |
59 | setlinebuf(stderr); | |
60 | setlinebuf(stdout); | |
61 | set_com_err_hook(reg_com_err_hook); | |
62 | ||
63 | /* Initialize com_err error tables */ | |
64 | init_ureg_err_tbl(); | |
65 | init_krb_err_tbl(); | |
66 | init_kadm_err_tbl(); | |
67 | initialize_gdss_error_table(); | |
68 | ||
69 | /* Use com_err or output to stderr for all log messages. */ | |
70 | #ifdef DEBUG | |
71 | com_err(whoami, 0, "*** Debugging messages enabled. ***"); | |
72 | #endif DEBUG | |
73 | ||
74 | /* Set the name of our kerberos ticket file */ | |
75 | krb_set_tkt_string("/tmp/tkt_ureg"); | |
76 | ||
77 | /* Connect to the Moira server */ | |
78 | if ((status = mr_connect(MOIRA_SERVER)) != MR_SUCCESS) | |
79 | { | |
80 | com_err(whoami, status, " on mr_connect"); | |
81 | exit(1); | |
82 | } | |
83 | ||
84 | /* Authorize, telling the server who you are */ | |
85 | if ((status = mr_auth(whoami)) != MR_SUCCESS) | |
86 | { | |
87 | com_err(whoami, status, " on mr_auth"); | |
88 | exit(1); | |
89 | } | |
90 | ||
91 | journal = fopen(REGJOURNAL, "a"); | |
92 | if (journal == NULL) { | |
93 | com_err(whoami, errno, " while opening journal file"); | |
94 | exit(1); | |
95 | } | |
96 | ||
97 | /* Allow request layer to initialize */ | |
98 | req_initialize(); | |
99 | ||
100 | /* Sit around waiting for requests from the client. */ | |
101 | for (;;) | |
102 | { | |
103 | get_request(&message); | |
104 | ||
105 | switch((int)message.request) | |
106 | { | |
107 | case UREG_VERIFY_USER: | |
108 | status = verify_user(&message,retval); | |
109 | break; | |
110 | case UREG_RESERVE_LOGIN: | |
111 | status = reserve_user(&message,retval); | |
112 | break; | |
113 | case UREG_SET_PASSWORD: | |
114 | case UREG_GET_KRB: | |
115 | status = set_password(&message,retval); | |
116 | break; | |
117 | case UREG_SET_IDENT: | |
118 | status = set_identity(&message,retval); | |
119 | break; | |
120 | case UREG_GET_SECURE: | |
121 | status = get_secure(&message,retval); | |
122 | break; | |
123 | case UREG_SET_SECURE: | |
124 | status = set_secure(&message,retval); | |
125 | break; | |
126 | default: | |
127 | status = UREG_UNKNOWN_REQUEST; | |
128 | critical_alert(FAIL_INST,"Unknown request %d from userreg.", | |
129 | message.request); | |
130 | break; | |
131 | } | |
132 | ||
133 | /* Report what happened to client */ | |
134 | report(status, retval); | |
135 | } | |
136 | } | |
137 | ||
138 | int parse_encrypted(message,data) | |
139 | struct msg *message; /* Formatted packet */ | |
140 | struct db_data *data; /* Data from the Moira database */ | |
141 | /* This routine makes sure that the ID from the database matches | |
142 | the ID sent accross in the packet. The information in the packet | |
143 | was created in the following way: | |
144 | ||
145 | The database used to contain encrypted IDs. Now we don't encrypt | |
146 | them in the database, although there are still some encrypted IDs | |
147 | there. | |
148 | ||
149 | The plain text ID number was encrypted via EncryptID() resulting | |
150 | in the form that would appear in the Moira database. This is | |
151 | concatinated to the plain text ID so that the ID string contains plain | |
152 | text ID followed by a null followed by the encrypted ID. Other | |
153 | information such as the username or password is appended. The whole | |
154 | thing is then DES encrypted using the encrypted ID as the source of | |
155 | the key. | |
156 | ||
157 | This routine tries each ID in the database that belongs | |
158 | to someone with this user's first and last name and tries to | |
159 | decrypt the packet with this information. If it succeeds, it returns | |
160 | zero and initializes all the fields of the formatted packet structure | |
161 | that depend on the encrypted information. */ | |
162 | { | |
163 | des_cblock key; /* The key for DES en/decryption */ | |
164 | des_key_schedule sched; /* En/decryption schedule */ | |
165 | static char decrypt[BUFSIZ]; /* Buffer to hold decrypted information */ | |
166 | long decrypt_len; /* Length of decypted ID information */ | |
167 | char recrypt[14]; /* Buffer to hold re-encrypted information */ | |
168 | static char hashid[14]; /* Buffer to hold one-way encrypted ID */ | |
169 | char idnumber[BUFSIZ]; /* Buffer to hold plain-text ID */ | |
170 | char *temp; /* A temporary string pointer */ | |
171 | int len; /* Keeps track of length left in packet */ | |
172 | int status = SUCCESS; /* Error status */ | |
173 | ||
174 | #ifdef DEBUG | |
175 | com_err(whoami, 0, "Entering parse_encrypted"); | |
176 | #endif | |
177 | ||
178 | /* Make the decrypted information length the same as the encrypted | |
179 | information length. Both are integral multples of eight bytes | |
180 | because of the DES encryption routines. */ | |
181 | decrypt_len = (long)message->encrypted_len; | |
182 | ||
183 | /* Get key from the possibly one-way encrypted ID in the Moira database */ | |
184 | if (data->mit_id[0] >= '0' && data->mit_id[0] <= '9') { | |
185 | char buf[32]; | |
186 | ||
187 | EncryptID(buf, data->mit_id, message->first, message->last); | |
188 | des_string_to_key(buf, key); | |
189 | } else | |
190 | des_string_to_key(data->mit_id, key); | |
191 | ||
192 | /* Get schedule from key */ | |
193 | des_key_sched(key, sched); | |
194 | /* Decrypt information from packet using this key. Since decrypt_len | |
195 | is an integral multiple of eight bytes, it will probably be null- | |
196 | padded. */ | |
197 | des_pcbc_encrypt(message->encrypted, decrypt, decrypt_len, | |
198 | sched, key, DES_DECRYPT); | |
199 | ||
200 | /* Extract the plain text and encrypted ID fields from the decrypted | |
201 | packet information. */ | |
202 | /* Since the decrypted information starts with the plain-text ID | |
203 | followed by a null, if the decryption worked, this will only | |
204 | copy the plain text part of the decrypted information. It is | |
205 | important that strncpy be used because if we are not using the | |
206 | correct key, there is no guarantee that a null will occur | |
207 | anywhere in the string. */ | |
208 | (void) strncpy(idnumber,decrypt,(int)decrypt_len); | |
209 | /* Check that the idnumber of a mismatched decryption doesn't overflow | |
210 | * the buffer. | |
211 | */ | |
212 | if (strlen(idnumber) != 9) { | |
213 | #ifdef DEBUG | |
214 | com_err(whoami, 0, "idnumber wrong size, probable user mismatch\n"); | |
215 | #endif | |
216 | return(FAILURE); | |
217 | } | |
218 | /* Point temp to the end of the plain text ID number. */ | |
219 | temp = decrypt + strlen(idnumber) + 1; | |
220 | /* Find out how much more packet there is. */ | |
221 | len = message->encrypted_len - (temp - decrypt); | |
222 | /* Copy the next CRYPT_LEN bytes of the decrypted information into | |
223 | hashid if there are CRYPT_LEN more bytes to copy. There will be | |
224 | if we have the right key. */ | |
225 | (void) strncpy(hashid, temp, min(len, CRYPT_LEN)); | |
226 | /* Point temp to the end of the encrypted ID field */ | |
227 | temp += strlen(hashid) + 1; | |
228 | /* Find out how much more room there is. */ | |
229 | len = message->encrypted_len - (temp - decrypt); | |
230 | ||
231 | /* Now compare encrypted ID and clear text ID for a match. */ | |
232 | if (strcmp(hashid, data->mit_id) && | |
233 | strcmp(idnumber, data->mit_id)) | |
234 | status = FAILURE; | |
235 | ||
236 | if (status == SUCCESS) | |
237 | { | |
238 | /* We made it. Now we can finish initializing message. */ | |
239 | /* Point leftover to whatever is left over! */ | |
240 | message->leftover = temp; | |
241 | message->leftover_len = len; | |
242 | /* Since we know we have the right user, fill in the information | |
243 | from the Moira database. */ | |
244 | message->db.reg_status = data->reg_status; | |
245 | (void) strncpy(message->db.uid,data->uid, sizeof(message->db.uid)); | |
246 | (void) strncpy(message->db.mit_id,data->mit_id, | |
247 | sizeof(message->db.mit_id)); | |
248 | (void) strncpy(message->db.login,data->login, sizeof(message->db.login)); | |
249 | } | |
250 | ||
251 | #ifdef DEBUG | |
252 | if (status) | |
253 | com_err(whoami, status, " in parse_encrypted"); | |
254 | else | |
255 | com_err(whoami, status, "parse_encrypted succeeded"); | |
256 | #endif | |
257 | ||
258 | return status; | |
259 | } | |
260 | ||
261 | int db_callproc(argc,argv,queue) | |
262 | int argc; /* Number of arguments returned by Moira */ | |
263 | char *argv[]; /* Arguments returned by Moira */ | |
264 | struct save_queue *queue; /* Queue to save information in */ | |
265 | /* This function is called by mr_query after each tuple found. It is | |
266 | used by find_user to cache information about each user found. */ | |
267 | { | |
268 | struct db_data *data; /* Structure to store the information in */ | |
269 | int status = SUCCESS; /* Error status */ | |
270 | ||
271 | #ifdef DEBUG | |
272 | com_err(whoami, 0, "Entering db_callproc."); | |
273 | #endif | |
274 | ||
275 | if (argc != U_END) | |
276 | { | |
277 | critical_alert | |
278 | (FAIL_INST, | |
279 | "Wrong number of arguments returned from get_user_account_by_name."); | |
280 | status = MR_ABORT; | |
281 | } | |
282 | else | |
283 | { | |
284 | /* extract the needed information from the results of the Moira query */ | |
285 | data = (struct db_data *)malloc(sizeof(struct db_data)); | |
286 | data->reg_status = atoi(argv[U_STATE]); | |
287 | (void) strncpy(data->login,argv[U_NAME],sizeof(data->login)); | |
288 | (void) strncpy(data->mit_id,argv[U_MITID],sizeof(data->mit_id)); | |
289 | (void) strncpy(data->uid,argv[U_UID],sizeof(data->uid)); | |
290 | #ifdef DEBUG | |
291 | fprintf(stderr,"Found in database:\n"); | |
292 | fprintf(stderr," Registration status: %d\n",data->reg_status); | |
293 | fprintf(stderr," login: %s\n",data->login); | |
294 | fprintf(stderr," MIT ID: %s\n",data->mit_id); | |
295 | fprintf(stderr," uid: %s\n",data->uid); | |
296 | #endif | |
297 | sq_save_data(queue,data); | |
298 | } | |
299 | ||
300 | return status; | |
301 | } | |
302 | ||
303 | int find_user(message) | |
304 | struct msg *message; /* Formatted packet structure */ | |
305 | /* This routine verifies that a user is allowed to register by finding | |
306 | him/her in the Moira database. It returns the status of the Moira | |
307 | query that it calls. */ | |
308 | { | |
309 | #define GUBN_ARGS 2 /* Arguements needed by get_user_by_name */ | |
310 | char *q_name; /* Name of query */ | |
311 | int q_argc; /* Number of arguments for query */ | |
312 | char *q_argv[GUBN_ARGS]; /* Arguments to query */ | |
313 | int status = SUCCESS; /* Query return status */ | |
314 | ||
315 | struct save_queue *queue; /* Queue to hold Moira data */ | |
316 | struct db_data *data; /* Structure for data for one tuple */ | |
317 | short verified = FALSE; /* Have we verified the user? */ | |
318 | ||
319 | /* Zero the mit_id field in the formatted packet structure. This | |
320 | being zeroed means that no user was found. */ | |
321 | bzero(message->db.mit_id,sizeof(message->db.mit_id)); | |
322 | ||
323 | if (status == SUCCESS) | |
324 | { | |
325 | /* Get ready to make an Moira query */ | |
326 | q_name = "get_user_account_by_name"; | |
327 | q_argc = GUBN_ARGS; /* #defined in this routine */ | |
328 | q_argv[0] = message->first; | |
329 | q_argv[1] = message->last; | |
330 | ||
331 | /* Create queue to hold information */ | |
332 | queue = sq_create(); | |
333 | ||
334 | /* Do it */ | |
335 | status = mr_query(q_name,q_argc,q_argv,db_callproc,(char *)queue); | |
336 | ||
337 | #ifdef DEBUG | |
338 | fprintf(stderr," %d returned by get_user_by_name\n",status); | |
339 | #endif | |
340 | ||
341 | if (status == MR_SUCCESS) | |
342 | { | |
343 | /* Traverse the list, freeing data as we go. If sq_get_data() | |
344 | returns zero if there is no more data on the queue. */ | |
345 | while (sq_get_data(queue,&data)) | |
346 | { | |
347 | if (!verified) | |
348 | /* parse_encrypted returns zero on success */ | |
349 | verified = (parse_encrypted(message,data) == SUCCESS); | |
350 | free((char *)data); | |
351 | } | |
352 | } | |
353 | ||
354 | /* Destroy the queue */ | |
355 | sq_destroy(queue); | |
356 | } | |
357 | ||
358 | #ifdef DEBUG | |
359 | fprintf(stderr,"Returned from find_user\n"); | |
360 | fprintf(stderr," MIT ID: %s\n", message->db.mit_id); | |
361 | fprintf(stderr," Registration status: %d\n",message->db.reg_status); | |
362 | fprintf(stderr," uid: %s\n",message->db.uid); | |
363 | fprintf(stderr," login: %s\n",message->db.login); | |
364 | fprintf(stderr," Status from query: %d\n",status); | |
365 | #endif DEBGUG | |
366 | ||
367 | return status; | |
368 | } | |
369 | ||
370 | int verify_user(message,retval) | |
371 | struct msg *message; | |
372 | char *retval; | |
373 | /* This routine determines whether a user is in the databse and returns | |
374 | his state so that other routines can figure out whether he is the | |
375 | correct state for various transactions. */ | |
376 | ||
377 | { | |
378 | int status = SUCCESS; /* Return status */ | |
379 | ||
380 | /* Log that we are about to veryify user */ | |
381 | com_err(whoami, 0, "verifying user %s %s",message->first,message->last); | |
382 | ||
383 | /* Figure out what user (if any) can be found based on the | |
384 | encrypted information in the packet. (See the comment on | |
385 | parse_encrypted().) */ | |
386 | ||
387 | status = find_user(message); | |
388 | ||
389 | /* If Moira coudn't find the user */ | |
390 | if (status == MR_NO_MATCH) | |
391 | status = UREG_USER_NOT_FOUND; | |
392 | else if (status == MR_SUCCESS) | |
393 | { | |
394 | /* If the information sent over in the packet did not point to a | |
395 | valid user, the mit_id field in the formatted packet structure | |
396 | will be empty. */ | |
397 | if (message->db.mit_id[0] == NULL) | |
398 | status = UREG_USER_NOT_FOUND; | |
399 | /* If the user was found but the registration has already started, | |
400 | use this as the status */ | |
401 | else | |
402 | { | |
403 | switch (message->db.reg_status) | |
404 | { | |
405 | case US_NO_LOGIN_YET: | |
406 | status = SUCCESS; | |
407 | break; | |
408 | case US_REGISTERED: | |
409 | status = UREG_ALREADY_REGISTERED; | |
410 | break; | |
411 | case US_NO_PASSWD: | |
412 | status = UREG_NO_PASSWD_YET; | |
413 | break; | |
414 | case US_DELETED: | |
415 | status = UREG_DELETED; | |
416 | break; | |
417 | case US_NOT_ALLOWED: | |
418 | status = UREG_NOT_ALLOWED; | |
419 | break; | |
420 | case US_ENROLLED: | |
421 | status = UREG_ENROLLED; | |
422 | break; | |
423 | case US_ENROLL_NOT_ALLOWED: | |
424 | status = UREG_ENROLL_NOT_ALLOWED; | |
425 | break; | |
426 | case US_HALF_ENROLLED: | |
427 | status = UREG_HALF_ENROLLED; | |
428 | break; | |
429 | default: | |
430 | status = UREG_MISC_ERROR; | |
431 | critical_alert(FAIL_INST,"Bad user state %d for login %s.", | |
432 | message->db.reg_status, message->db.login); | |
433 | break; | |
434 | } | |
435 | /* Set retval to the login name so that the client can use | |
436 | it in the error message it will give the user. */ | |
437 | (void) strcpy(retval,message->db.login); | |
438 | } | |
439 | } | |
440 | ||
441 | if (status) | |
442 | com_err(whoami, status, " returned from verify_user"); | |
443 | else | |
444 | com_err(whoami, 0, "User verified"); | |
445 | ||
446 | return status; | |
447 | } | |
448 | ||
449 | int ureg_kadm_init() | |
450 | { | |
451 | unsigned int status = SUCCESS; /* Return status */ | |
452 | static char krbrealm[REALM_SZ]; /* kerberos realm name */ | |
453 | static char hostbuf[BUFSIZ], *host; /* local hostname in principal fmt */ | |
454 | static int inited = 0; | |
455 | char *p; | |
456 | ||
457 | #ifdef DEBUG | |
458 | com_err(whoami, 0, "Entering ureg_kadm_init"); | |
459 | #endif DEBUG | |
460 | ||
461 | if (!inited) { | |
462 | inited++; | |
463 | bzero(krbrealm, sizeof(krbrealm)); | |
464 | if (status = krb_get_lrealm(krbrealm, 1)) { | |
465 | status += krb_err_base; | |
466 | com_err(whoami, status, " fetching kerberos realm"); | |
467 | exit(1); | |
468 | } | |
469 | if (gethostname(hostbuf, sizeof(hostbuf)) < 0) | |
470 | com_err(whoami, errno, "getting local hostname"); | |
471 | host = canonicalize_hostname(strsave(hostbuf)); | |
472 | for (p = host; *p && *p != '.'; p++) | |
473 | if (isupper(*p)) | |
474 | *p = tolower(*p); | |
475 | *p = 0; | |
476 | } | |
477 | ||
478 | /* Get keys for interacting with Kerberos admin server. */ | |
479 | /* principal, instance, realm, service, service instance, life, file */ | |
480 | if (status = krb_get_svc_in_tkt(MOIRA_SNAME, host, krbrealm, PWSERV_NAME, | |
481 | KADM_SINST, 1, KEYFILE)) | |
482 | status += krb_err_base; | |
483 | ||
484 | if (status != SUCCESS) | |
485 | com_err(whoami, status, " while get admin tickets"); | |
486 | #ifdef DEBUG | |
487 | else { | |
488 | com_err(whoami, status, "Succeeded in getting admin tickets"); | |
489 | } | |
490 | #endif | |
491 | ||
492 | if (status == SUCCESS) { | |
493 | if ((status = kadm_init_link(PWSERV_NAME, KADM_SINST, krbrealm)) != | |
494 | KADM_SUCCESS) { | |
495 | com_err(whoami, status, " while initializing kadmin connection"); | |
496 | } | |
497 | } | |
498 | ||
499 | return status; | |
500 | } | |
501 | ||
502 | int null_callproc(argc,argv,message) | |
503 | int argc; | |
504 | char *argv[]; | |
505 | char *message; | |
506 | /* This routine is a null callback that should be used for queries that | |
507 | do not return tuples. If it ever gets called, something is wrong. */ | |
508 | { | |
509 | critical_alert(FAIL_INST,"Something returned from an update query."); | |
510 | return FAILURE; | |
511 | } | |
512 | ||
513 | /* | |
514 | * This routine reserves a principal in kerberos by setting up a | |
515 | * principal with a random initial key. | |
516 | */ | |
517 | int reserve_krb(login) | |
518 | char *login; | |
519 | { | |
520 | int status = SUCCESS; | |
521 | Kadm_vals new; | |
522 | des_cblock key; | |
523 | u_long *lkey = (u_long *)key; | |
524 | ||
525 | #ifdef DEBUG | |
526 | com_err(whoami, 0, "Entering reserve_krb"); | |
527 | #endif DEBUG | |
528 | ||
529 | if ((status = ureg_kadm_init()) == SUCCESS) { | |
530 | bzero((char *)&new, sizeof(new)); | |
531 | SET_FIELD(KADM_DESKEY, new.fields); | |
532 | SET_FIELD(KADM_NAME, new.fields); | |
533 | ||
534 | (void) des_random_key(key); | |
535 | new.key_low = htonl(lkey[0]); | |
536 | new.key_high = htonl(lkey[1]); | |
537 | strcpy(new.name, login); | |
538 | ||
539 | com_err(whoami, 0, "Creating kerberos principal for %s", login); | |
540 | status = kadm_add(&new); | |
541 | if (status != KADM_SUCCESS) | |
542 | com_err(whoami, status, " while reserving principal"); | |
543 | ||
544 | bzero((char *)&new, sizeof(new)); | |
545 | } | |
546 | ||
547 | dest_tkt(); | |
548 | ||
549 | return(status); | |
550 | } | |
551 | ||
552 | /* | |
553 | * This routine reserves a principal in kerberos by setting up a | |
554 | * principal with a random initial key. | |
555 | */ | |
556 | int setpass_krb(login, password) | |
557 | char *login; | |
558 | char *password; | |
559 | { | |
560 | int status = SUCCESS; | |
561 | Kadm_vals new; | |
562 | des_cblock key; | |
563 | u_long *lkey = (u_long *)key; | |
564 | ||
565 | if ((status = ureg_kadm_init()) == SUCCESS) { | |
566 | bzero((char *)&new, sizeof(new)); | |
567 | SET_FIELD(KADM_DESKEY, new.fields); | |
568 | SET_FIELD(KADM_NAME, new.fields); | |
569 | ||
570 | (void) des_string_to_key(password, key); | |
571 | new.key_low = htonl(lkey[0]); | |
572 | new.key_high = htonl(lkey[1]); | |
573 | strcpy(new.name, login); | |
574 | ||
575 | com_err(whoami, 0, "Setting password for %s", login); | |
576 | /* First arguement is not used if user has modify privileges */ | |
577 | if ((status = kadm_mod(&new, &new)) != KADM_SUCCESS) { | |
578 | if (status == KADM_NOENTRY) { | |
579 | com_err(whoami, 0, | |
580 | "kerberos principal doesn't exist; creating"); | |
581 | if ((status = kadm_add(&new)) != KADM_SUCCESS) | |
582 | com_err(whoami, status, | |
583 | " while creating kerberos principal"); | |
584 | } | |
585 | else | |
586 | com_err(whoami, status, " while setting password"); | |
587 | } | |
588 | } | |
589 | ||
590 | dest_tkt(); | |
591 | return(status); | |
592 | } | |
593 | ||
594 | int reserve_user(message,retval) | |
595 | struct msg *message; | |
596 | char *retval; | |
597 | { | |
598 | int q_argc; /* Number of arguments to query */ | |
599 | char *q_argv[3]; /* Arguments to Moira query */ | |
600 | char *q_name; /* Name of Moira query */ | |
601 | int status = SUCCESS; /* General purpose error status */ | |
602 | char fstype_buf[7]; /* Buffer to hold fs_type, a 16 bit number */ | |
603 | char *login; /* The login name the user wants */ | |
604 | register int i; /* A counter */ | |
605 | ||
606 | /* Log that we are about to reserve a user. */ | |
607 | com_err(whoami, 0, "reserving user %s %s", | |
608 | message->first, message->last); | |
609 | ||
610 | /* Check to make sure that we can verify this user. */ | |
611 | if ((status = verify_user(message,retval)) == SUCCESS) | |
612 | { | |
613 | /* Get the requested login name from leftover packet information. */ | |
614 | login = message->leftover; | |
615 | ||
616 | /* Check the login name for validity. The login name is currently | |
617 | is allowed to contain lowercase letters in any position and | |
618 | and numbers and underscore characters in any position but the | |
619 | first. */ | |
620 | if ((strlen(login) < MIN_UNAME) || (strlen(login) > MAX_UNAME)) | |
621 | status = UREG_INVALID_UNAME; | |
622 | } | |
623 | if (status == SUCCESS) | |
624 | if ((login[0] == '_') || isdigit(login[0])) | |
625 | status = UREG_INVALID_UNAME; | |
626 | ||
627 | if (status == SUCCESS) | |
628 | { | |
629 | for (i = 0; i < strlen(login); i++) | |
630 | if (!islower(login[i]) && !isdigit(login[i]) && | |
631 | (login[i] != '_')) | |
632 | { | |
633 | status = UREG_INVALID_UNAME; | |
634 | break; | |
635 | } | |
636 | } | |
637 | if (status == SUCCESS) | |
638 | { | |
639 | /* Now that we have a valid user with a valid login... */ | |
640 | ||
641 | /* First, try to reserve the user in Moira. */ | |
642 | (void) sprintf(fstype_buf,"%d",MR_FS_STUDENT); | |
643 | q_name = "register_user"; | |
644 | q_argv[0] = message->db.uid; | |
645 | q_argv[1] = login; | |
646 | q_argv[2] = fstype_buf; | |
647 | q_argc = 3; | |
648 | status = mr_query(q_name,q_argc,q_argv,null_callproc,(char *)0); | |
649 | switch (status) | |
650 | { | |
651 | case MR_SUCCESS: | |
652 | status = SUCCESS; | |
653 | break; | |
654 | case MR_IN_USE: | |
655 | status = UREG_LOGIN_USED; | |
656 | break; | |
657 | case MR_DEADLOCK: | |
658 | status = UREG_MISC_ERROR; | |
659 | break; | |
660 | default: | |
661 | critical_alert(FAIL_INST,"%s returned from register_user.", | |
662 | error_message(status)); | |
663 | status = UREG_MISC_ERROR; | |
664 | break; | |
665 | } | |
666 | } | |
667 | ||
668 | if (status == SUCCESS) | |
669 | { | |
670 | /* | |
671 | * Moira login was successfully created; try to reserve kerberos | |
672 | * principal. | |
673 | * | |
674 | * If this routine fails, store the login in the retval so | |
675 | * that it can be used in the client-side error message. | |
676 | */ | |
677 | if ((status = reserve_krb(login)) != SUCCESS) | |
678 | (void) strcpy(retval, login); | |
679 | } | |
680 | ||
681 | if (status) | |
682 | com_err(whoami, status, " returned from reserve_user"); | |
683 | else { | |
684 | com_err(whoami, 0, "User reserved"); | |
685 | } | |
686 | ||
687 | return status; | |
688 | } | |
689 | ||
690 | int set_final_status(message) | |
691 | struct msg *message; | |
692 | /* This routine updates a user's registration status to fully | |
693 | registered. */ | |
694 | { | |
695 | char *login; | |
696 | char *q_name; /* Name of Moira query */ | |
697 | int q_argc; /* Number of arguments for Moira query */ | |
698 | char *q_argv[2]; /* Arguments to get user by uid */ | |
699 | char state[7]; /* Can hold a 16 bit integer */ | |
700 | int status; /* Error status */ | |
701 | ||
702 | if (message->request == UREG_SET_PASSWORD) | |
703 | (void) sprintf(state,"%d",US_REGISTERED); | |
704 | else if (message->db.reg_status == US_NO_LOGIN_YET) | |
705 | (void) sprintf(state,"%d",US_ENROLLED); | |
706 | else | |
707 | (void) sprintf(state,"%d",US_ENROLL_NOT_ALLOWED); | |
708 | ||
709 | login = message->db.login; | |
710 | com_err(whoami, 0, "Setting final status for %s to %s", login, state); | |
711 | ||
712 | q_name = "update_user_status"; | |
713 | q_argc = 2; | |
714 | q_argv[0] = login; | |
715 | q_argv[1] = state; | |
716 | if ((status = mr_query(q_name, q_argc, q_argv, null_callproc, | |
717 | (char *)0)) != MR_SUCCESS) { | |
718 | if (status == MR_DEADLOCK) | |
719 | status = UREG_MISC_ERROR; | |
720 | else | |
721 | critical_alert(FAIL_INST,"%s returned from update_user_status.", | |
722 | error_message(status)); | |
723 | } | |
724 | if (status) | |
725 | com_err(whoami, status, " returned from set_final_status"); | |
726 | else | |
727 | com_err(whoami, 0, "Final status set"); | |
728 | return status; | |
729 | } | |
730 | ||
731 | ||
732 | int set_password(message,retval) | |
733 | struct msg *message; | |
734 | char *retval; | |
735 | /* This routine is used to set the initial password for the new user. */ | |
736 | { | |
737 | int status = SUCCESS; /* Return status */ | |
738 | char *passwd; /* User's password */ | |
739 | ||
740 | com_err(whoami, 0, "setting password %s %s", | |
741 | message->first, message->last); | |
742 | ||
743 | status = verify_user(message,retval); | |
744 | ||
745 | /* Don't set the password unless the registration status of the user | |
746 | is that he exists and has no password. */ | |
747 | if (status == SUCCESS) | |
748 | status = UREG_NO_LOGIN_YET; | |
749 | if (((int)message->request == UREG_SET_PASSWORD && | |
750 | status == UREG_NO_PASSWD_YET) || | |
751 | ((int)message->request == UREG_GET_KRB && | |
752 | status == UREG_HALF_ENROLLED)) | |
753 | { | |
754 | /* User is in proper state for this transaction. */ | |
755 | ||
756 | passwd = message->leftover; | |
757 | ||
758 | /* Set password. */ | |
759 | if ((status = setpass_krb(message->db.login, passwd)) != SUCCESS) | |
760 | /* If failure, allow login name to be used in client | |
761 | error message */ | |
762 | (void) strcpy(retval,message->db.login); | |
763 | else | |
764 | /* Otherwise, mark user as finished. */ | |
765 | status = set_final_status(message); | |
766 | } | |
767 | ||
768 | if (status) | |
769 | com_err(whoami, status, " returned from set_passwd"); | |
770 | else | |
771 | com_err(whoami, 0, "Password set"); | |
772 | ||
773 | return status; | |
774 | } | |
775 | ||
776 | ||
777 | int getuserinfo(argc, argv, qargv) | |
778 | int argc; | |
779 | char **argv; | |
780 | char **qargv; | |
781 | { | |
782 | int status = SUCCESS; | |
783 | int i; | |
784 | ||
785 | if (argc != U_END) { | |
786 | critical_alert(FAIL_INST, | |
787 | "Wrong number of args returned from get_user_by_uid"); | |
788 | status = MR_ABORT; | |
789 | } else { | |
790 | qargv[U_NAME] = strsave(argv[U_NAME]); | |
791 | for (i = 1; i < U_MODTIME; i++) | |
792 | qargv[i+1] = strsave(argv[i]); | |
793 | qargv[U_MODTIME+1] = NULL; | |
794 | } | |
795 | return(status); | |
796 | } | |
797 | ||
798 | ||
799 | int set_identity(message,retval) | |
800 | struct msg *message; | |
801 | char *retval; | |
802 | { | |
803 | int q_argc; /* Number of arguments to query */ | |
804 | char *q_argv[U_END]; /* Arguments to Moira query */ | |
805 | char *q_name; /* Name of Moira query */ | |
806 | int status = SUCCESS; /* General purpose error status */ | |
807 | char fstype_buf[7]; /* Buffer to hold fs_type, a 16 bit number */ | |
808 | char *login; /* The login name the user wants */ | |
809 | register int i; /* A counter */ | |
810 | ||
811 | /* Log that we are about to reserve a user. */ | |
812 | com_err(whoami, 0, "setting identity %s %s", | |
813 | message->first, message->last); | |
814 | ||
815 | /* Check to make sure that we can verify this user. */ | |
816 | status = verify_user(message,retval); | |
817 | if (status == SUCCESS || status == UREG_NOT_ALLOWED) | |
818 | { | |
819 | status = SUCCESS; | |
820 | /* Get the requested login name from leftover packet information. */ | |
821 | login = message->leftover; | |
822 | ||
823 | /* Check the login name for validity. The login name is currently | |
824 | is allowed to contain lowercase letters in any position and | |
825 | and numbers and underscore characters in any position but the | |
826 | first. */ | |
827 | if ((strlen(login) < MIN_UNAME) || (strlen(login) > MAX_UNAME)) | |
828 | status = UREG_INVALID_UNAME; | |
829 | } | |
830 | if (status == SUCCESS) | |
831 | if ((login[0] == '_') || isdigit(login[0])) | |
832 | status = UREG_INVALID_UNAME; | |
833 | if (status == SUCCESS) | |
834 | { | |
835 | for (i = 0; i < strlen(login); i++) | |
836 | if (!islower(login[i]) && !isdigit(login[i]) && | |
837 | (login[i] != '_')) | |
838 | { | |
839 | status = UREG_INVALID_UNAME; | |
840 | break; | |
841 | } | |
842 | } | |
843 | if (status == SUCCESS) | |
844 | { | |
845 | /* Now that we have a valid user with a valid login... */ | |
846 | ||
847 | q_argv[0] = message->db.uid; | |
848 | status = mr_query("get_user_account_by_uid", 1, q_argv, | |
849 | getuserinfo, q_argv); | |
850 | if (status != SUCCESS) { | |
851 | com_err(whoami, status, " while getting user info"); | |
852 | return(status); | |
853 | } | |
854 | q_argv[U_NAME+1] = login; | |
855 | q_argv[U_STATE+1] = "7"; | |
856 | q_argv[U_SIGNATURE+1] = ""; | |
857 | status = mr_query("update_user_account", U_MODTIME+1, q_argv, | |
858 | null_callproc, NULL); | |
859 | switch (status) | |
860 | { | |
861 | case MR_SUCCESS: | |
862 | status = SUCCESS; | |
863 | break; | |
864 | case MR_IN_USE: | |
865 | case MR_NOT_UNIQUE: | |
866 | status = UREG_LOGIN_USED; | |
867 | break; | |
868 | case MR_DEADLOCK: | |
869 | status = UREG_MISC_ERROR; | |
870 | break; | |
871 | default: | |
872 | critical_alert(FAIL_INST,"%s returned from update_user_account.", | |
873 | error_message(status)); | |
874 | status = UREG_MISC_ERROR; | |
875 | break; | |
876 | } | |
877 | } | |
878 | if (status == SUCCESS) | |
879 | { | |
880 | /* Moira login was successfully created; try to reserve kerberos | |
881 | principal. */ | |
882 | /* If this routine fails, store the login in the retval so | |
883 | that it can be used in the client-side error message. */ | |
884 | if ((status = reserve_krb(login)) != SUCCESS) | |
885 | (void) strcpy(retval, login); | |
886 | } | |
887 | ||
888 | if (status) | |
889 | com_err(whoami, status, " returned from set_identity"); | |
890 | else | |
891 | com_err(whoami, 0, "Identity set"); | |
892 | ||
893 | return status; | |
894 | } | |
895 | ||
896 | ||
897 | void reg_com_err_hook(whoami, code, fmt, pvar) | |
898 | char *whoami; | |
899 | int code; | |
900 | char *fmt; | |
901 | caddr_t pvar; | |
902 | { | |
903 | if (whoami) { | |
904 | fputs(whoami, stderr); | |
905 | fputs(": ", stderr); | |
906 | } | |
907 | if (code) { | |
908 | fputs(error_message(code), stderr); | |
909 | } | |
910 | if (fmt) { | |
911 | _doprnt(fmt, pvar, stderr); | |
912 | } | |
913 | putc('\n', stderr); | |
914 | fflush(stderr); | |
915 | } | |
916 | ||
917 | ||
918 | /* Find out of someone's secure instance password is set. | |
919 | * Returns UREG_ALREADY_REGISTERED if set, SUCCESS (0) if not. | |
920 | */ | |
921 | ||
922 | int get_secure(message, retval) | |
923 | struct msg *message; | |
924 | char *retval; | |
925 | { | |
926 | int status; | |
927 | char *argv[U_END]; | |
928 | ||
929 | com_err(whoami, 0, "checking status of secure password for %s", | |
930 | message->first); | |
931 | argv[0] = message->first; | |
932 | status = mr_query("get_user_account_by_login", 1, argv, getuserinfo, argv); | |
933 | if (status != SUCCESS) { | |
934 | com_err(whoami, status, " while getting user info"); | |
935 | return(status); | |
936 | } | |
937 | if (atoi(argv[U_SECURE + 1])) | |
938 | return UREG_ALREADY_REGISTERED; | |
939 | return SUCCESS; | |
940 | } | |
941 | ||
942 | ||
943 | /* Set someone's secure instance password. */ | |
944 | ||
945 | int set_secure(message, retval) | |
946 | struct msg *message; | |
947 | char *retval; | |
948 | { | |
949 | int status, i; | |
950 | char *argv[U_END], hostbuf[256], *bp, *p, buf[512], *passwd, *id; | |
951 | KTEXT_ST creds; | |
952 | AUTH_DAT auth; | |
953 | C_Block key; | |
954 | Key_schedule keys; | |
955 | Kadm_vals kv; | |
956 | u_long *lkey = (u_long *)key; | |
957 | struct timeval now; | |
958 | static int inited = 0; | |
959 | static char *host; | |
960 | ||
961 | if (!inited) { | |
962 | inited++; | |
963 | if (gethostname(hostbuf, sizeof(hostbuf)) < 0) | |
964 | com_err(whoami, errno, "getting local hostname"); | |
965 | host = strsave(krb_get_phost(hostbuf)); | |
966 | } | |
967 | ||
968 | com_err(whoami, 0, "setting secure passwd for %s", message->first); | |
969 | argv[0] = message->first; | |
970 | status = mr_query("get_user_account_by_login", 1, argv, getuserinfo, argv); | |
971 | if (status != SUCCESS) { | |
972 | com_err(whoami, status, " while getting user info"); | |
973 | return(status); | |
974 | } | |
975 | if (atoi(argv[U_SECURE + 1])) { | |
976 | com_err(whoami, UREG_ALREADY_REGISTERED, "in set_secure()"); | |
977 | return UREG_ALREADY_REGISTERED; | |
978 | } | |
979 | ||
980 | bp = message->encrypted; | |
981 | /* round up to word boundary */ | |
982 | bp = (char *)((((u_long)bp + 3) >> 2) << 2); | |
983 | ||
984 | creds.length = ntohl(*((int *)bp)); | |
985 | bp += sizeof(int); | |
986 | bcopy(bp, creds.dat, creds.length); | |
987 | creds.mbz = 0; | |
988 | bp += creds.length; | |
989 | ||
990 | #ifdef DEBUG | |
991 | com_err(whoami, 0, "Cred: length %d", creds.length); | |
992 | for (i = 0; i < creds.length; i += 16) | |
993 | com_err(whoami, 0, " %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x", | |
994 | creds.dat[i+0], creds.dat[i+1], creds.dat[i+2], creds.dat[i+3], | |
995 | creds.dat[i+4], creds.dat[i+5], creds.dat[i+6], creds.dat[i+7], | |
996 | creds.dat[i+8], creds.dat[i+9], creds.dat[i+10], creds.dat[i+11], | |
997 | creds.dat[i+12], creds.dat[i+13], creds.dat[i+14], creds.dat[i+15]); | |
998 | #endif /* DEBUG */ | |
999 | ||
1000 | status = krb_rd_req(&creds, "changepw", host, cur_req_sender(), | |
1001 | &auth, ""); | |
1002 | if (status) { | |
1003 | status += krb_err_base; | |
1004 | com_err(whoami, status, " verifying credentials in set_secure()"); | |
1005 | return(status); | |
1006 | } | |
1007 | ||
1008 | message->leftover_len = ntohl(*((int*)(bp))); | |
1009 | bp += sizeof(int); | |
1010 | message->leftover = bp; | |
1011 | ||
1012 | des_key_sched(auth.session, keys); | |
1013 | des_pcbc_encrypt(message->leftover, buf, message->leftover_len, | |
1014 | keys, auth.session, 0); | |
1015 | ||
1016 | id = buf; | |
1017 | passwd = index(buf, ','); | |
1018 | *passwd++ = 0; | |
1019 | #ifdef DEBUG | |
1020 | com_err(whoami, 0, "Got id: %s, passwd %d chars", id, strlen(passwd)); | |
1021 | #endif | |
1022 | ||
1023 | if (strcmp(id, argv[U_MITID + 1])) { | |
1024 | char buf[32]; | |
1025 | ||
1026 | EncryptID(buf, id, argv[U_FIRST+1], argv[U_LAST+1]); | |
1027 | if (strcmp(buf, argv[U_MITID + 1])) { | |
1028 | status = UREG_USER_NOT_FOUND; | |
1029 | com_err(whoami, status, "IDs mismatch: %s (%s), %s", id, buf, | |
1030 | argv[U_MITID + 1]); | |
1031 | return status; | |
1032 | } | |
1033 | } | |
1034 | ||
1035 | /* now do actual password setting stuff */ | |
1036 | ||
1037 | if ((status = ureg_kadm_init()) != SUCCESS) { | |
1038 | com_err(whoami, status, "initing kadm stuff"); | |
1039 | return(status); | |
1040 | } | |
1041 | ||
1042 | bzero((char *)&kv, sizeof(kv)); | |
1043 | SET_FIELD(KADM_DESKEY, kv.fields); | |
1044 | SET_FIELD(KADM_NAME, kv.fields); | |
1045 | SET_FIELD(KADM_INST, kv.fields); | |
1046 | (void) des_string_to_key(passwd, key); | |
1047 | kv.key_low = htonl(lkey[0]); | |
1048 | kv.key_high = htonl(lkey[1]); | |
1049 | strcpy(kv.name, message->first); | |
1050 | strcpy(kv.instance, "extra"); | |
1051 | ||
1052 | if ((status = kadm_add(&kv)) != KADM_SUCCESS) { | |
1053 | com_err(whoami, status, " while creating kerberos principal"); | |
1054 | return(status); | |
1055 | } | |
1056 | ||
1057 | argv[0] = message->first; | |
1058 | argv[1] = buf; | |
1059 | gettimeofday(&now, NULL); | |
1060 | sprintf(buf, "%d", now.tv_sec); | |
1061 | status = mr_query("update_user_security_status", 2, argv, getuserinfo, argv); | |
1062 | if (status != SUCCESS) { | |
1063 | com_err(whoami, status, " while updating user status"); | |
1064 | return(status); | |
1065 | } | |
1066 | return SUCCESS; | |
1067 | } |