2 * Copyright 2000, International Business Machines Corporation and others.
5 * This software has been released under the terms of the IBM Public
6 * License. For details, see the LICENSE file in the top-level source
7 * directory or online at http://www.openafs.org/dl/license10.html
10 #include <afsconfig.h>
11 #include <afs/param.h>
16 #ifdef HAVE_SYS_RESOURCE_H
17 # include <sys/resource.h>
20 #ifdef IGNORE_SOME_GCC_WARNINGS
21 # pragma GCC diagnostic warning "-Wdeprecated-declarations"
27 #include <hcrypto/des.h>
35 #include <afs/cellconfig.h>
37 #include <afs/com_err.h>
38 #include <afs/afsutil.h>
39 #include <afs/audit.h>
45 #include "kauth_internal.h"
47 #include "kadatabase.h"
50 extern struct ubik_dbase *KA_dbase;
51 struct kaheader cheader;
52 Date cheaderReadTime; /* time cheader last read in */
53 extern struct afsconf_dir *KA_conf; /* for getting cell info */
57 char lrealm[MAXKTCREALMLEN];
59 #ifndef EXPIREPW /* password expiration default yes */
63 #ifndef AUTOCPWINTERVAL
64 #define AUTOCPWINTERVAL (24*3600)
66 #ifndef AUTOCPWUPDATES
67 #define AUTOCPWUPDATES 128
72 static afs_int32 autoCPWInterval;
73 static afs_int32 autoCPWUpdates;
75 static afs_int32 set_password(struct ubik_trans *tt, char *name,
77 struct ktc_encryptionKey *password,
78 afs_int32 kvno, afs_int32 caller);
79 static afs_int32 impose_reuse_limits(EncryptionKey *password,
80 struct kaentry *tentry);
81 static int create_user(struct ubik_trans *tt, char *name, char *instance,
82 struct ktc_encryptionKey *key, afs_int32 caller,
85 /* This routine is called whenever an RPC interface needs the time. It uses
86 the current time to randomize a 128 bit value that is used to change the
87 AuthServer Admin and TGS keys automatically. */
89 static Date nextAutoCPWTime = 0;
90 static afs_int32 totalUpdates = 0;
92 /* This routine is ostensibly to get the current time, but basically its job is
93 to periodically update a random number. It also periodically updates the
94 keys for the builtin servers. This is why it needs a transaction pointer
95 and returns an error code. If the caller is in a read transaction, the tt
96 ptr should be zero and the return code need not be checked. */
100 struct ubik_trans *tt, /* tt != 0: a write transaction */
101 int admin) /* the caller is an admin user */
103 /* random value used to change Admin & TGS keys, this is at risk during
104 * multi-threaded operation, but I think the consequences are fairly
106 static afs_uint32 random_value[4];
109 unsigned int bit, nbit;
113 gettimeofday(&time, NULL);
114 bit = (random_value[3] >> 31) & 1; /* get high bit of high word */
115 for (i = 0; i < 4; i++) {
116 nbit = random_value[i] >> 31;
117 random_value[i] = (random_value[i] << 1) + bit;
120 /* get 60ths from usec. This is all the real randomness there is. */
121 random_value[0] += time.tv_usec / 16667;
123 if (nextAutoCPWTime == 0) { /* initialize things */
124 nextAutoCPWTime = time.tv_sec + autoCPWInterval;
125 memcpy(&random_value[0], &time, 8);
126 memcpy(&random_value[2], &time, 8);
129 if ((++totalUpdates >= autoCPWUpdates) && tt && /* a write transaction */
130 ((admin && (time.tv_sec >= nextAutoCPWTime))
131 || (time.tv_sec >= nextAutoCPWTime + autoCPWInterval))) {
132 struct ktc_encryptionKey key;
133 char buf[4 * sizeof(key) + 1];
134 struct kaentry tentry;
136 char bob[KA_TIMESTR_LEN];
138 ka_timestr(time.tv_sec, bob, KA_TIMESTR_LEN);
139 es_Report("Auto CPW at %s\n", bob);
141 es_Report(" ... even though no ADMIN user\n");
143 code = FindBlock(tt, KA_ADMIN_NAME, KA_ADMIN_INST, &to, &tentry);
146 if (to) { /* check if auto cpw is disabled */
147 if (!(ntohl(tentry.flags) & KAFNOCPW)) {
148 memcpy(&key, &random_value[0], sizeof(key));
149 DES_set_odd_parity(ktc_to_cblock(&key));
151 set_password(tt, KA_ADMIN_NAME, KA_ADMIN_INST, &key, 0,
154 DES_init_random_number_generator(ktc_to_cblock(&key));
155 ka_ConvertBytes(buf, sizeof(buf), (char *)&key,
157 es_Report("New Admin key is %s\n", buf);
160 ("in get_time: set_password failed because: %d\n",
167 code = FindBlock(tt, KA_TGS_NAME, lrealm, &to, &tentry);
170 if (to) { /* check if auto cpw is disabled */
171 if (!(ntohl(tentry.flags) & KAFNOCPW)) {
172 memcpy(&key, &random_value[2], sizeof(key));
173 DES_set_odd_parity(ktc_to_cblock(&key));
174 code = set_password(tt, KA_TGS_NAME, lrealm, &key, 0, 0);
176 ka_ConvertBytes(buf, sizeof(buf), (char *)&key,
178 es_Report("New TGS key is %s\n", buf);
181 ("in get_time: set_password failed because: %s\n",
182 afs_error_message(code));
187 code = ka_FillKeyCache(tt); /* ensure in-core copy is uptodate */
191 nextAutoCPWTime = time.tv_sec + autoCPWInterval;
195 *timeP = time.tv_sec;
199 static int noAuthenticationRequired; /* global state */
200 static int recheckNoAuth; /* global state */
202 /* kaprocsInited is sort of a lock: during a transaction only one process runs
203 while kaprocsInited is false. */
205 static int kaprocsInited = 0;
207 /* This variable is protected by the kaprocsInited flag. */
209 static int (*rebuildDatabase) (struct ubik_trans *);
211 /* This is called to initialize the database */
214 initialize_database(struct ubik_trans *tt)
216 struct ktc_encryptionKey key;
219 gettimeofday((struct timeval *)&key, NULL); /* this is just a cheap seed key */
220 DES_set_odd_parity(ktc_to_cblock(&key));
221 DES_init_random_number_generator(ktc_to_cblock(&key));
222 if ((code = DES_new_random_key(ktc_to_cblock(&key)))
224 create_user(tt, KA_ADMIN_NAME, KA_ADMIN_INST, &key, 0,
225 KAFNORMAL | KAFNOSEAL | KAFNOTGS)))
227 if ((code = DES_new_random_key(ktc_to_cblock(&key)))
229 create_user(tt, KA_TGS_NAME, lrealm, &key, 0,
230 KAFNORMAL | KAFNOSEAL | KAFNOTGS)))
235 /* This routine handles initialization required by this module. The initFlags
236 parameter passes some information about the command line arguments. */
239 init_kaprocs(const char *lclpath, int initFlags)
242 struct ubik_trans *tt;
243 struct ktc_encryptionKey key;
248 return KAINTERNALERROR;
250 return KAINTERNALERROR;
251 code = afsconf_GetLocalCell(KA_conf, lrealm, sizeof(lrealm));
253 printf("** Can't determine local cell name!\n");
256 ucstring(lrealm, lrealm, sizeof(lrealm));
260 noAuthenticationRequired = 1;
264 noAuthenticationRequired = afsconf_GetNoAuthFlag(KA_conf);
265 if (noAuthenticationRequired)
266 printf("Running server with security disabled\n");
269 autoCPWInterval = 10;
272 autoCPWInterval = AUTOCPWINTERVAL;
273 autoCPWUpdates = AUTOCPWUPDATES;
276 init_kadatabase(initFlags);
277 rebuildDatabase = initialize_database;
279 if ((code = InitAuthServ(&tt, LOCKREAD, 0))) {
280 printf("init_kaprocs: InitAuthServ failed: code = %d\n", code);
283 code = ka_LookupKey(tt, KA_ADMIN_NAME, KA_ADMIN_INST, &kvno, &key);
287 ("init_kaprocs: ka_LookupKey (code = %d) DB not initialized properly?\n",
291 DES_init_random_number_generator(ktc_to_cblock(&key));
293 code = ubik_EndTrans(tt);
295 printf("init_kaprocs: ubik_EndTrans failed: code = %d\n", code);
299 kaux_opendb((char *)lclpath);/* aux database stores failure counters */
300 rebuildDatabase = 0; /* only do this during init */
305 /* These variable are for returning debugging info about the state of the
306 server. If they get trashed during multi-threaded operation it doesn't
309 /* this is global so COUNT_REQ in krb_udp.c can refer to it. */
310 char *lastOperation = 0; /* name of last operation */
311 static Date lastTrans; /* time of last transaction */
313 static char adminPrincipal[256];
314 static char authPrincipal[256];
315 static char tgsPrincipal[256];
316 static char tgsServerPrincipal[256];
319 save_principal(char *p, char *n, char *i, char *c)
329 if (i && strlen(i)) {
339 if (c && strlen(c)) {
351 check_auth(struct rx_call *call,
352 struct ubik_trans *at,
353 int admin, /* require caller to be ADMIN */
354 afs_int32 *acaller_id)
357 char name[MAXKTCNAMELEN];
358 char instance[MAXKTCNAMELEN];
359 char cell[MAXKTCREALMLEN];
361 Date expiration; /* checked by Security Module */
362 struct kaentry tentry;
369 noAuthenticationRequired = afsconf_GetNoAuthFlag(KA_conf);
371 si = rx_SecurityClassOf(rx_ConnectionOf(call));
372 if (si == RX_SCINDEX_VAB) {
373 printf("No support for VAB security module yet.\n");
375 } else if (si == RX_SCINDEX_NULL) {
378 } else if (si != RX_SCINDEX_KAD) {
379 es_Report("Unknown security index %d\n", si);
384 rxkad_GetServerInfo(rx_ConnectionOf(call), &level, &expiration, name,
385 instance, cell, &kvno);
389 if (level != rxkad_crypt) {
390 es_Report("Incorrect security level = %d\n", level);
395 if (!name_instance_legal(name, instance))
399 ("Authorization rejected because we don't understand intercell stuff yet: ",
401 printf("@%s\n", cell);
405 code = FindBlock(at, name, instance, acaller_id, &tentry);
408 if (*acaller_id == 0) {
409 ka_PrintUserID("User ", name, instance, " unknown.\n");
412 save_principal(adminPrincipal, name, instance, 0);
415 if (!(ntohl(tentry.flags) & KAFADMIN)) {
416 if (noAuthenticationRequired) {
417 ka_PrintUserID("Authorization approved for ", name, instance,
418 " because there is no authentication required\n");
419 osi_auditU(call, UnAuthEvent, code, AUD_STR, name, AUD_STR,
420 instance, AUD_STR, cell, AUD_END);
423 ka_PrintUserID("User ", name, instance, " is not ADMIN.\n");
426 osi_auditU(call, UseOfPrivilegeEvent, code, AUD_STR, name, AUD_STR,
427 instance, AUD_STR, cell, AUD_END);
432 if (noAuthenticationRequired) {
434 ("Caller w/o authorization approved no authentication required\n");
435 osi_auditU(call, UnAuthEvent, code, AUD_STR, name, AUD_STR, instance,
436 AUD_STR, cell, AUD_END);
439 return code; /* no auth info */
443 AwaitInitialization(void)
446 while (!kaprocsInited) {
449 else if (time(0) - start > 5)
456 /* This is called by every RPC interface to create a Ubik transaction and read
457 the database header into core */
460 InitAuthServ(struct ubik_trans **tt,
461 int lock, /* indicate read/write transaction */
462 int *this_op) /* opcode of RPC proc, for COUNT_ABO */
465 afs_int32 start = 0; /* time started waiting for quorum */
466 float wait = 0.91; /* start waiting for 1 second */
468 /* Wait for server initialization to finish if not during init_kaprocs */
470 if ((code = AwaitInitialization()))
473 for (code = UNOQUORUM; code == UNOQUORUM;) {
474 if (lock == LOCKREAD)
475 code = ubik_BeginTransReadAny(KA_dbase, UBIK_READTRANS, tt);
477 code = ubik_BeginTrans(KA_dbase, UBIK_WRITETRANS, tt);
478 if (code == UNOQUORUM) { /* no quorum elected */
482 int delay = time(0) - start;
483 if (this_op) { /* punt quickly, if RPC call */
486 } else { /* more patient during init. */
491 printf("Waiting for quorum election.\n");
494 IOMGR_Sleep((int)wait);
499 if ((code = ubik_SetLock(*tt, 1, 1, lock))) {
502 ubik_AbortTrans(*tt);
505 /* check that dbase is initialized and setup cheader */
506 if (lock == LOCKREAD) {
507 /* init but don't fix because this is read only */
508 code = CheckInit(*tt, 0);
510 ubik_AbortTrans(*tt); /* abort, since probably I/O error */
511 /* we did the check under a ReadAny transaction, but now, after
512 * getting a write transaction (and thus some real guarantees
513 * about what databases are really out there), we will check again
514 * in CheckInit before nuking the database. Since this may now get
515 * a UNOQUORUM we'll just do this from the top.
517 if ((code = InitAuthServ(tt, LOCKWRITE, this_op)))
519 if ((code = ubik_EndTrans(*tt)))
522 /* now open the read transaction that was originally requested. */
523 return InitAuthServ(tt, lock, this_op);
526 if ((code = CheckInit(*tt, rebuildDatabase))) {
529 ubik_AbortTrans(*tt);
534 ka_FillKeyCache(*tt); /* ensure in-core copy is uptodate */
538 /* returns true if name is specially known by AuthServer */
541 special_name(char *name, char *instance)
544 return ((!strcmp(name, KA_TGS_NAME) && !strcmp(instance, lrealm))
545 || (strcmp(name, KA_ADMIN_NAME) == 0));
549 create_user(struct ubik_trans *tt, char *name, char *instance,
550 struct ktc_encryptionKey *key, afs_int32 caller,
555 struct kaentry tentry;
556 afs_int32 maxLifetime;
558 code = FindBlock(tt, name, instance, &to, &tentry);
562 return KAEXIST; /* name already exists, we fail */
564 to = AllocBlock(tt, &tentry);
568 /* otherwise we have a block */
569 strncpy(tentry.userID.name, name, sizeof(tentry.userID.name));
570 strncpy(tentry.userID.instance, instance, sizeof(tentry.userID.instance));
571 tentry.flags = htonl(flags);
572 if (special_name(name, instance)) { /* this overrides key & version */
573 tentry.flags = htonl(ntohl(tentry.flags) | KAFSPECIAL);
574 tentry.key_version = htonl(-1); /* don't save this key */
575 if ((code = ka_NewKey(tt, to, &tentry, key)))
578 memcpy(&tentry.key, key, sizeof(tentry.key));
579 tentry.key_version = htonl(0);
581 tentry.user_expiration = htonl(NEVERDATE);
582 code = get_time(&tentry.modification_time, tt, 1);
586 /* time and addr of entry for guy changing this entry */
587 tentry.modification_time = htonl(tentry.modification_time);
588 tentry.modification_id = htonl(caller);
589 tentry.change_password_time = tentry.modification_time;
591 if (strcmp(name, KA_TGS_NAME) == 0)
592 maxLifetime = MAXKTCTICKETLIFETIME;
593 else if (strcmp(name, KA_ADMIN_NAME) == 0)
594 maxLifetime = 10 * 3600;
595 else if (strcmp(name, AUTH_SUPERUSER) == 0)
596 maxLifetime = 100 * 3600;
598 maxLifetime = 25 * 3600; /* regular users */
599 tentry.max_ticket_lifetime = htonl(maxLifetime);
601 code = ThreadBlock(tt, to, &tentry);
605 /* Put actual stub routines here */
608 SKAM_CreateUser(struct rx_call *call, char *aname, char *ainstance,
609 EncryptionKey ainitpw)
613 code = kamCreateUser(call, aname, ainstance, ainitpw);
614 osi_auditU(call, AFS_KAM_CrUserEvent, code, AUD_STR, aname, AUD_STR,
621 kamCreateUser(struct rx_call *call, char *aname, char *ainstance,
622 EncryptionKey ainitpw)
625 struct ubik_trans *tt;
626 afs_int32 caller; /* Disk offset of caller's entry */
628 COUNT_REQ(CreateUser);
629 if (!DES_check_key_parity(EncryptionKey_to_cblock(&ainitpw)) ||
630 DES_is_weak_key(EncryptionKey_to_cblock(&ainitpw)))
632 if (!name_instance_legal(aname, ainstance))
634 if ((code = InitAuthServ(&tt, LOCKWRITE, this_op)))
636 code = check_auth(call, tt, 1, &caller);
642 code = create_user(tt, aname, ainstance, EncryptionKey_to_ktc(&ainitpw), caller, KAFNORMAL);
648 code = ubik_EndTrans(tt);
649 KALOG(aname, ainstance, NULL, NULL, NULL, call->conn->peer->host,
655 SKAA_ChangePassword(struct rx_call *call, char *aname, char *ainstance,
656 ka_CBS *arequest, ka_BBS *oanswer)
660 code = ChangePassWord(call, aname, ainstance, arequest, oanswer);
661 osi_auditU(call, AFS_KAA_ChPswdEvent, code, AUD_STR, aname, AUD_STR,
667 ChangePassWord(struct rx_call *call, char *aname, char *ainstance,
668 ka_CBS *arequest, ka_BBS *oanswer)
671 struct ubik_trans *tt;
672 afs_int32 to; /* offset of block */
673 struct kaentry tentry;
674 struct ka_cpwRequest request; /* request after decryption */
675 char *answer; /* where answer is to be put */
676 int answer_len; /* length of answer packet */
677 afs_int32 kvno; /* requested key version number */
678 DES_key_schedule user_schedule; /* key schedule for user's key */
679 Date request_time; /* time request originated */
681 COUNT_REQ(ChangePassword);
682 if (!name_instance_legal(aname, ainstance))
684 if (strcmp(ainstance, KA_ADMIN_NAME) == 0)
686 if ((code = InitAuthServ(&tt, LOCKWRITE, this_op)))
689 code = FindBlock(tt, aname, ainstance, &to, &tentry);
693 if (to == 0) { /* no such user */
697 if (ntohl(tentry.flags) & KAFNOCPW) {
702 /* decrypt request w/ user password */
703 if ((code = DES_key_sched(ktc_to_cblock(&tentry.key), &user_schedule)))
704 es_Report("In KAChangePassword: key_sched returned %d\n", code);
705 DES_pcbc_encrypt(arequest->SeqBody, &request,
706 min(arequest->SeqLen, sizeof(request)), &user_schedule,
707 ktc_to_cblockptr(&tentry.key), DECRYPT);
709 /* validate the request */
710 request_time = ntohl(request.time); /* reorder date */
711 kvno = ntohl(request.kvno);
712 if ((abs(request_time - time(0)) > KTC_TIME_UNCERTAINTY) || strncmp(request.label, KA_CPW_REQ_LABEL, sizeof(request.label)) || (request.spare) || (kvno > MAXKAKVNO)) { /* these are reseved */
717 /* check to see if the new password was used before, or if there has
718 * not been sufficient time since the last password change
720 code = impose_reuse_limits(ktc_to_EncryptionKey(&request.newpw), &tentry);
725 /* Create the Answer Packet */
726 answer_len = sizeof(Date) + KA_LABELSIZE;
727 if (oanswer->MaxSeqLen < answer_len) {
728 code = KAANSWERTOOLONG;
731 oanswer->SeqLen = answer_len;
732 answer = oanswer->SeqBody;
733 request.time = htonl(request_time + 1);
734 memcpy(answer, (char *)&request.time, sizeof(Date));
735 answer += sizeof(Date);
736 memcpy(answer, KA_CPW_ANS_LABEL, KA_LABELSIZE);
738 DES_pcbc_encrypt(oanswer->SeqBody, oanswer->SeqBody, answer_len,
739 &user_schedule, ktc_to_cblockptr(&tentry.key), ENCRYPT);
741 code = set_password(tt, aname, ainstance, &request.newpw, kvno, 0);
747 cheader.stats.cpws = htonl(ntohl(cheader.stats.cpws) + 1);
749 kawrite(tt, DOFFSET(0, &cheader, &cheader.stats.cpws),
750 (char *)&cheader.stats.cpws, sizeof(afs_int32));
756 code = ubik_EndTrans(tt);
766 impose_reuse_limits(EncryptionKey *password, struct kaentry *tentry)
774 if (!tentry->pwsums[0] && npwSums > 1 && !tentry->pwsums[1])
775 return 0; /* password reuse limits not in effect */
777 code = get_time(&now, 0, 0);
781 if ((now - ntohl(tentry->change_password_time)) < MinHours * 60 * 60)
784 if (!memcmp(password, &(tentry->key), sizeof(EncryptionKey)))
787 code = ka_KeyCheckSum((char *)password, &newsum);
791 newsum = newsum & 0x000000ff;
792 for (i = 0; i < npwSums; i++) {
793 if (newsum == tentry->pwsums[i])
802 set_password(struct ubik_trans *tt, char *name, char *instance,
803 struct ktc_encryptionKey *password, afs_int32 kvno, afs_int32 caller)
806 afs_int32 to; /* offset of block */
807 struct kaentry tentry;
813 code = FindBlock(tt, name, instance, &to, &tentry);
817 return KANOENT; /* no such user */
819 /* if password reuse limits in effect, set the checksums, the hard way */
820 if (!tentry.pwsums[0] && npwSums > 1 && !tentry.pwsums[1]) {
821 /* do nothing, no limits */ ;
823 code = ka_KeyCheckSum((char *)&(tentry.key), &newsum);
826 for (i = npwSums - 1; i; i--)
827 tentry.pwsums[i] = tentry.pwsums[i - 1];
828 tentry.pwsums[0] = newsum & 0x000000ff;
832 if (special_name(name, instance)) { /* set key over rides key_version */
833 tentry.flags = htonl(ntohl(tentry.flags) | KAFSPECIAL);
834 if ((code = ka_NewKey(tt, to, &tentry, password)))
837 memcpy(&tentry.key, password, sizeof(tentry.key));
839 kvno = ntohl(tentry.key_version);
840 if ((kvno < 1) || (kvno >= MAXKAKVNO))
845 tentry.key_version = htonl((afs_int32) kvno); /* requested key version */
850 /* no-write prevents recursive call to set_password by AuthCPW code. */
851 code = get_time(&now, 0, 0);
855 tentry.modification_time = htonl(now);
856 tentry.modification_id = htonl(caller);
859 tentry.change_password_time = htonl(now);
861 if ((code = kawrite(tt, to, (char *) &tentry, sizeof(tentry))))
867 SKAM_SetPassword(struct rx_call *call, char *aname, char *ainstance,
868 afs_int32 akvno, EncryptionKey apassword)
872 code = kamSetPassword(call, aname, ainstance, akvno, apassword);
873 osi_auditU(call, AFS_KAM_SetPswdEvent, code, AUD_STR, aname, AUD_STR,
879 kamSetPassword(struct rx_call *call, char *aname, char *ainstance,
880 afs_int32 akvno, EncryptionKey apassword)
883 struct ubik_trans *tt;
884 afs_int32 caller; /* Disk offset of caller's entry */
885 struct kaentry tentry;
887 COUNT_REQ(SetPassword);
888 if (akvno > MAXKAKVNO)
889 return KABADARGUMENT;
890 if (!DES_check_key_parity(EncryptionKey_to_cblock(&apassword)) ||
891 DES_is_weak_key(EncryptionKey_to_cblock(&apassword)))
894 if (!name_instance_legal(aname, ainstance))
896 if ((code = InitAuthServ(&tt, LOCKWRITE, this_op)))
898 code = check_auth(call, tt, 0, &caller);
902 if ((code = karead(tt, caller, (char *)&tentry, sizeof(tentry)))) {
906 /* if the user is changing his own password or ADMIN then go ahead. */
907 if ((strcmp(tentry.userID.name, aname) == 0)
908 && (strcmp(tentry.userID.instance, ainstance) == 0)) {
909 if (ntohl(tentry.flags) & KAFNOCPW)
912 code = impose_reuse_limits(&apassword, &tentry);
915 set_password(tt, aname, ainstance, EncryptionKey_to_ktc(&apassword), akvno, 0);
917 } else if (ntohl(tentry.flags) & KAFADMIN) {
918 code = set_password(tt, aname, ainstance, EncryptionKey_to_ktc(&apassword), akvno, caller);
924 code = ubik_EndTrans(tt);
925 KALOG(aname, ainstance, NULL, NULL, NULL, call->conn->peer->host,
936 CoerseLifetime(Date start, Date end)
938 unsigned char kerberosV4Life;
939 kerberosV4Life = time_to_life(start, end);
940 end = life_to_time(start, kerberosV4Life);
945 GetEndTime(Date start, /* start time of ticket */
946 Date reqEnd, /* requested end time */
947 Date expiration, /* authorizing ticket's expiration */
948 struct kaentry *caller,
949 struct kaentry *server,
950 Date *endP) /* actual end time */
956 if (ntohl(caller->flags) & KAFNOTGS)
957 return KABADUSER; /* no new tickets for this user */
958 if (expiration && (ntohl(server->flags) & KAFNOSEAL))
959 return KABADSERVER; /* can't be target of GetTicket req */
961 expiration = NEVERDATE;
963 cExp = ntohl(caller->user_expiration);
964 sExp = ntohl(server->user_expiration);
969 cLife = start + ntohl(caller->max_ticket_lifetime);
970 sLife = start + ntohl(server->max_ticket_lifetime);
972 umin(umin(reqEnd, expiration),
973 umin(umin(cLife, sLife), umin(cExp, sExp)));
974 end = CoerseLifetime(start, end);
980 PrepareTicketAnswer(ka_BBS *oanswer, afs_int32 challenge, char *ticket,
981 afs_int32 ticketLen, struct ktc_encryptionKey *sessionKey,
982 Date start, Date end, struct kaentry *caller,
983 struct kaentry *server, char *cell, char *label)
986 struct ka_ticketAnswer *answer;
989 code = KAANSWERTOOLONG;
990 if (oanswer->MaxSeqLen <
991 sizeof(struct ka_ticketAnswer) - 5 * MAXKTCNAMELEN - MAXKTCTICKETLEN +
995 answer = (struct ka_ticketAnswer *)oanswer->SeqBody;
996 answer->challenge = htonl(challenge);
997 memcpy(&answer->sessionKey, sessionKey, sizeof(struct ktc_encryptionKey));
998 answer->startTime = htonl(start);
999 answer->endTime = htonl(end);
1000 answer->kvno = server->key_version;
1001 answer->ticketLen = htonl(ticketLen);
1004 char *ans = answer->name; /* pointer to variable part */
1005 int rem; /* space remaining */
1006 int len; /* macro temp. */
1008 rem = oanswer->MaxSeqLen - (ans - oanswer->SeqBody);
1010 #define putstr(str) len = strlen (str)+1;\
1011 if (rem < len) return code;\
1013 ans += len; rem -= len
1014 putstr(caller->userID.name);
1015 putstr(caller->userID.instance);
1017 putstr(server->userID.name);
1018 putstr(server->userID.instance);
1019 if (rem < ticketLen + KA_LABELSIZE)
1021 memcpy(ans, ticket, ticketLen);
1024 memcpy(ans, label, KA_LABELSIZE);
1026 memset(ans, 0, KA_LABELSIZE);
1027 ans += KA_LABELSIZE;
1028 oanswer->SeqLen = (ans - oanswer->SeqBody);
1031 answer->cksum = htonl(cksum);
1032 oanswer->SeqLen = round_up_to_ebs(oanswer->SeqLen);
1033 if (oanswer->SeqLen > oanswer->MaxSeqLen)
1038 /* This is used to get a ticket granting ticket or an admininstration ticket.
1039 These two specific, built-in servers are special cases, which require the
1040 client's key as an additional security precaution. The GetTicket operation
1041 is normally disabled for these two principals. */
1044 Authenticate(int version, struct rx_call *call, char *aname, char *ainstance,
1045 Date start, Date end, ka_CBS *arequest, ka_BBS *oanswer)
1048 struct ubik_trans *tt;
1049 afs_int32 to; /* offset of block */
1051 struct kaentry server; /* entry for desired server */
1052 struct ka_gettgtRequest request; /* request after decryption */
1053 int tgt, adm; /* type of request */
1054 char *sname; /* principal of server */
1056 char ticket[MAXKTCTICKETLEN]; /* our copy of the ticket */
1058 struct ktc_encryptionKey sessionKey; /* we have to invent a session key */
1059 char *answer; /* where answer is to be put */
1060 int answer_len; /* length of answer packet */
1061 Date answer_time; /* 1+ request time in network order */
1062 afs_int32 temp; /* for htonl conversions */
1063 DES_key_schedule user_schedule; /* key schedule for user's key */
1064 afs_int32 tgskvno; /* key version of service key */
1065 struct ktc_encryptionKey tgskey; /* service key for encrypting ticket */
1067 afs_uint32 pwexpires;
1069 COUNT_REQ(Authenticate);
1070 if (!name_instance_legal(aname, ainstance))
1072 if ((code = InitAuthServ(&tt, LOCKREAD, this_op)))
1074 get_time(&now, 0, 0);
1076 sname = sinst = NULL;
1078 code = FindBlock(tt, aname, ainstance, &to, &tentry);
1082 if (to == 0) { /* no such user */
1087 /* have to check for locked before verifying the password, otherwise all
1088 * KALOCKED means is "yup, you guessed the password all right, now wait a
1089 * few minutes and we'll let you in"
1092 (to, (u_int) tentry.misc_auth_bytes[ATTEMPTS],
1093 (afs_uint32) tentry.misc_auth_bytes[LOCKTIME] << 9)) {
1099 save_principal(authPrincipal, aname, ainstance, 0);
1101 /* decrypt request w/ user password */
1102 if ((code = DES_key_sched(ktc_to_cblock(&tentry.key), &user_schedule)))
1103 es_Report("In KAAuthenticate: key_sched returned %d\n", code);
1104 DES_pcbc_encrypt(arequest->SeqBody, &request,
1105 min(arequest->SeqLen, sizeof(request)), &user_schedule,
1106 ktc_to_cblockptr(&tentry.key), DECRYPT);
1108 request.time = ntohl(request.time); /* reorder date */
1109 tgt = !strncmp(request.label, KA_GETTGT_REQ_LABEL, sizeof(request.label));
1110 adm = !strncmp(request.label, KA_GETADM_REQ_LABEL, sizeof(request.label));
1111 if (!(tgt || adm)) {
1112 kaux_inc(to, ((unsigned char)tentry.misc_auth_bytes[LOCKTIME]) << 9);
1113 code = KABADREQUEST;
1116 kaux_write(to, 0, 0); /* reset counters */
1119 if (!tentry.misc_auth_bytes[EXPIRES]) {
1120 /* 0 in the database means never, but 0 on the network means today */
1121 /* 255 on the network means "long time, maybe never" */
1124 pwexpires = tentry.misc_auth_bytes[EXPIRES];
1127 ntohl(tentry.change_password_time) + 24 * 60 * 60 * pwexpires;
1128 if (adm) { /* provide a little slack for admin ticket */
1129 pwexpires += 30 * 24 * 60 * 60; /* 30 days */
1131 if (pwexpires < now) {
1135 pwexpires = (pwexpires - now) / (24 * 60 * 60);
1136 if (pwexpires > 255)
1140 #endif /* EXPIREPW */
1142 if (abs(request.time - now) > KTC_TIME_UNCERTAINTY) {
1144 if (oanswer->MaxSeqLen < sizeof(afs_int32))
1145 code = KAANSWERTOOLONG;
1146 else { /* return our time if possible */
1147 oanswer->SeqLen = sizeof(afs_int32);
1148 request.time = htonl(now);
1149 memcpy(oanswer->SeqBody, &request.time, sizeof(afs_int32));
1155 sname = (tgt ? KA_TGS_NAME : KA_ADMIN_NAME);
1156 sinst = (tgt ? lrealm : KA_ADMIN_INST);
1157 code = FindBlock(tt, sname, sinst, &to, &server);
1165 tgskvno = ntohl(server.key_version);
1166 memcpy(&tgskey, &server.key, sizeof(tgskey));
1168 code = DES_new_random_key(ktc_to_cblock(&sessionKey));
1174 code = GetEndTime(start, end, 0 /*!GetTicket */ , &tentry, &server, &end);
1179 tkt_MakeTicket(ticket, &ticketLen, &tgskey, aname, ainstance, "",
1180 start, end, &sessionKey,
1181 rx_HostOf(rx_PeerOf(rx_ConnectionOf(call))), sname,
1189 ticketLen + sizeof(Date) + sizeof(struct ktc_encryptionKey) +
1190 2 * sizeof(afs_int32) + KA_LABELSIZE;
1191 answer_len = round_up_to_ebs(answer_len);
1192 if (answer_len > oanswer->MaxSeqLen) {
1193 code = KAANSWERTOOLONG;
1196 oanswer->SeqLen = answer_len;
1197 answer = oanswer->SeqBody;
1198 answer_time = htonl(request.time + 1);
1199 memcpy(answer, (char *)&answer_time, sizeof(Date));
1200 answer += sizeof(Date);
1201 memcpy(answer, (char *)&sessionKey, sizeof(struct ktc_encryptionKey));
1202 answer += sizeof(struct ktc_encryptionKey);
1203 temp = htonl(tgskvno);
1204 memcpy(answer, (char *)&temp, sizeof(afs_int32));
1205 answer += sizeof(afs_int32);
1206 temp = htonl(ticketLen);
1207 memcpy(answer, (char *)&temp, sizeof(afs_int32));
1208 answer += sizeof(afs_int32);
1209 memcpy(answer, ticket, ticketLen);
1210 answer += ticketLen;
1211 memcpy(answer, (tgt ? KA_GETTGT_ANS_LABEL : KA_GETADM_ANS_LABEL),
1217 PrepareTicketAnswer(oanswer, request.time + 1, ticket, ticketLen,
1218 &sessionKey, start, end, &tentry, &server, "",
1219 (tgt ? KA_GETTGT_ANS_LABEL :
1220 KA_GETADM_ANS_LABEL));
1225 && oanswer->SeqLen < oanswer->MaxSeqLen + sizeof(afs_int32)) {
1226 temp = pwexpires << 24; /* move it into the high byte */
1227 pwexpires = htonl(temp);
1229 memcpy((char *)oanswer->SeqBody + oanswer->SeqLen, &pwexpires,
1231 oanswer->SeqLen += sizeof(afs_int32);
1232 oanswer->SeqLen = round_up_to_ebs(oanswer->SeqLen);
1233 if (oanswer->SeqLen > oanswer->MaxSeqLen) {
1234 code = KAANSWERTOOLONG;
1238 #endif /* EXPIREPW */
1242 code = KAINTERNALERROR;
1245 DES_pcbc_encrypt(oanswer->SeqBody, oanswer->SeqBody, oanswer->SeqLen,
1246 &user_schedule, ktc_to_cblockptr(&tentry.key), ENCRYPT);
1247 code = ubik_EndTrans(tt);
1248 KALOG(aname, ainstance, sname, sinst, NULL, call->conn->peer->host,
1254 ubik_AbortTrans(tt);
1255 KALOG(aname, ainstance, sname, sinst, NULL, call->conn->peer->host,
1261 SKAA_Authenticate_old(struct rx_call *call, char *aname, char *ainstance,
1262 Date start, Date end, ka_CBS *arequest,
1267 IOMGR_Sleep(1); /* discourage use of this mechanism */
1269 Authenticate(0, call, aname, ainstance, start, end, arequest,
1271 osi_auditU(call, AFS_KAA_AuthOEvent, code, AUD_STR, aname, AUD_STR,
1272 ainstance, AUD_END);
1278 SKAA_Authenticate(struct rx_call *call, char *aname, char *ainstance,
1279 Date start, Date end, ka_CBS *arequest, ka_BBS *oanswer)
1284 Authenticate(1, call, aname, ainstance, start, end, arequest,
1286 osi_auditU(call, AFS_KAA_AuthEvent, code, AUD_STR, aname, AUD_STR,
1287 ainstance, AUD_END);
1293 SKAA_AuthenticateV2(struct rx_call *call, char *aname, char *ainstance,
1294 Date start, Date end, ka_CBS *arequest, ka_BBS *oanswer)
1299 Authenticate(2, call, aname, ainstance, start, end, arequest,
1301 osi_auditU(call, AFS_KAA_AuthEvent, code, AUD_STR, aname, AUD_STR,
1302 ainstance, AUD_END);
1308 SKAM_SetFields(struct rx_call *call,
1313 afs_int32 alifetime,
1314 afs_int32 amaxAssociates,
1315 afs_uint32 misc_auth_bytes, /* 4 bytes, each 0 means unspecified */
1321 kamSetFields(call, aname, ainstance, aflags, aexpiration, alifetime,
1322 amaxAssociates, misc_auth_bytes, spare2);
1323 osi_auditU(call, AFS_KAM_SetFldEvent, code, AUD_STR, aname, AUD_STR,
1324 ainstance, AUD_LONG, aflags, AUD_DATE, aexpiration, AUD_LONG,
1325 alifetime, AUD_LONG, amaxAssociates, AUD_END);
1330 kamSetFields(struct rx_call *call,
1335 afs_int32 alifetime,
1336 afs_int32 amaxAssociates,
1337 afs_uint32 misc_auth_bytes, /* 4 bytes, each 0 means unspecified */
1342 struct ubik_trans *tt;
1344 afs_int32 tentry_offset; /* offset of entry */
1345 struct kaentry tentry;
1346 unsigned char newvals[4];
1348 COUNT_REQ(SetFields);
1351 return KABADARGUMENT; /* not supported yet... */
1353 /* make sure we're supposed to do something */
1354 if (!(aflags || aexpiration || alifetime || (amaxAssociates >= 0)
1356 || ((aflags & ~KAFNORMAL) & ~KAF_SETTABLE_FLAGS))
1357 return KABADARGUMENT; /* arguments no good */
1358 if (!name_instance_legal(aname, ainstance))
1360 if ((code = InitAuthServ(&tt, LOCKWRITE, this_op)))
1362 code = check_auth(call, tt, 1, &caller);
1367 code = FindBlock(tt, aname, ainstance, &tentry_offset, &tentry);
1370 if (tentry_offset == 0) { /* no such user */
1374 if ((ntohl(tentry.flags) & KAFNORMAL) == 0)
1375 return KAINTERNALERROR;
1377 /* Keep track of the total number of admin accounts. This way we can
1378 * update database without any admin privilege initially */
1379 if ((aflags & KAFADMIN) != (ntohl(tentry.flags) & KAFADMIN)) {
1380 /* if admin state is changing */
1382 if (ntohl(tentry.flags) & KAFADMIN)
1386 if ((code = update_admin_count(tt, delta)))
1390 htonl((ntohl(tentry.flags) & ~KAF_SETTABLE_FLAGS) | aflags);
1392 if ((code = get_time(&now, tt, 1)))
1395 tentry.user_expiration = htonl(aexpiration);
1396 if (!ntohl(tentry.change_password_time)) {
1397 tentry.change_password_time = htonl(now);
1401 tentry.max_ticket_lifetime = htonl(alifetime);
1403 #ifndef NOPWCONTROLS
1405 * We've packed a bunch of bytes into a long for backward compatibility.
1406 * These include password expiration time, and some failed login limits
1407 * counters. Now let's unpack them and stick them into the
1408 * kaentry struct. All the bytes have values in the range
1409 * 1..255, else they were not specified in the interface, and are
1411 * In the case of password expiration times, 1 means password never
1412 * expires (==>0), 2 means password only lives for one day (==>1),
1415 if (misc_auth_bytes) {
1416 unpack_long(misc_auth_bytes, newvals);
1417 if (newvals[EXPIRES]) {
1418 tentry.misc_auth_bytes[EXPIRES] = newvals[EXPIRES] - 1;
1421 if (newvals[REUSEFLAGS]) {
1422 if (newvals[REUSEFLAGS] & KA_REUSEPW)
1423 memset(tentry.pwsums, 0, KA_NPWSUMS);
1424 else if ((newvals[REUSEFLAGS] & KA_NOREUSEPW)
1425 && !tentry.pwsums[0])
1426 tentry.pwsums[0] = 0xff;
1429 if (newvals[ATTEMPTS]) {
1430 tentry.misc_auth_bytes[ATTEMPTS] = newvals[ATTEMPTS] - 1;
1432 if (newvals[LOCKTIME]) {
1433 tentry.misc_auth_bytes[LOCKTIME] = newvals[LOCKTIME] - 1;
1436 tentry.misc_auth_bytes = htonl(tentry.misc_auth_bytes);
1439 #endif /* NOPWCONTROLS */
1441 if (amaxAssociates >= 0) {
1442 if ((ntohl(tentry.flags) & KAFASSOC)
1443 || (ntohl(tentry.flags) & KAFSPECIAL))
1445 if (((ntohl(tentry.flags) & KAFASSOCROOT) == 0) && (amaxAssociates > 0)) /* convert normal user to assoc root */
1446 tentry.flags = htonl(ntohl(tentry.flags) | KAFASSOCROOT);
1447 tentry.misc.assocRoot.maxAssociates = htonl(amaxAssociates);
1450 tentry.modification_time = htonl(now);
1451 tentry.modification_id = htonl(caller);
1452 code = kawrite(tt, tentry_offset, (char *) &tentry, sizeof(tentry));
1456 code = ubik_EndTrans(tt);
1457 KALOG(aname, ainstance, NULL, NULL, NULL, call->conn->peer->host,
1463 ubik_AbortTrans(tt);
1470 SKAM_DeleteUser(struct rx_call *call, char *aname, char *ainstance)
1474 code = kamDeleteUser(call, aname, ainstance);
1475 osi_auditU(call, AFS_KAM_DelUserEvent, code, AUD_STR, aname, AUD_STR,
1476 ainstance, AUD_END);
1481 kamDeleteUser(struct rx_call *call, char *aname, char *ainstance)
1484 struct ubik_trans *tt;
1487 struct kaentry tentry;
1488 unsigned int nfailures;
1489 afs_uint32 locktime;
1491 COUNT_REQ(DeleteUser);
1492 if (!name_instance_legal(aname, ainstance))
1494 if ((code = InitAuthServ(&tt, LOCKWRITE, this_op)))
1496 code = check_auth(call, tt, 1, &caller);
1500 ubik_AbortTrans(tt);
1504 code = FindBlock(tt, aname, ainstance, &to, &tentry);
1507 if (to == 0) { /* name not found */
1512 kaux_read(to, &nfailures, &locktime);
1513 if (nfailures || locktime)
1514 kaux_write(to, 0, 0); /* zero failure counters at this offset */
1516 /* track all AuthServer identities */
1517 if (special_name(aname, ainstance))
1518 if ((code = ka_DelKey(tt, to, &tentry)))
1521 if (ntohl(tentry.flags) & KAFADMIN) /* keep admin count up-to-date */
1522 if ((code = update_admin_count(tt, -1)))
1525 if ((code = UnthreadBlock(tt, &tentry)) || (code = FreeBlock(tt, to)) || (code = get_time(0, tt, 1)) /* update randomness */
1529 code = ubik_EndTrans(tt);
1530 KALOG(aname, ainstance, NULL, NULL, NULL, call->conn->peer->host,
1535 /* we set a bit in here which indicates that the user's limit of
1536 * authentication failures has been exceeded. If that bit is not set,
1537 * kas can take it on faith that the user ID is not locked. If that
1538 * bit is set, kas has to check all the servers to find one who will
1539 * report that the ID is not locked, or else to find out when the ID
1543 SKAM_GetEntry(struct rx_call *call,
1546 afs_int32 aversion, /* major version assumed by caller */
1547 kaentryinfo *aentry) /* entry data copied here */
1551 code = kamGetEntry(call, aname, ainstance, aversion, aentry);
1552 osi_auditU(call, AFS_KAM_GetEntEvent, code, AUD_STR, aname, AUD_STR,
1553 ainstance, AUD_END);
1558 kamGetEntry(struct rx_call *call,
1561 afs_int32 aversion, /* major version assumed by caller */
1562 kaentryinfo *aentry) /* entry data copied here */
1565 struct ubik_trans *tt;
1566 afs_int32 callerIndex;
1567 struct kaentry caller;
1570 struct kaentry tentry;
1571 rxkad_level enc_level = rxkad_clear;
1572 int callerIsAdmin = 0;
1574 COUNT_REQ(GetEntry);
1575 if (aversion != KAMAJORVERSION)
1576 return KAOLDINTERFACE;
1577 if (!name_instance_legal(aname, ainstance))
1579 if ((code = InitAuthServ(&tt, LOCKREAD, this_op)))
1581 code = check_auth(call, tt, 0, &callerIndex);
1585 if (noAuthenticationRequired) {
1586 } else if (!callerIndex) {
1590 if ((code = karead(tt, callerIndex, (char *)&caller, sizeof(caller)))) {
1594 /* if the user is checking his own entry or ADMIN then go ahead. */
1595 callerIsAdmin = (ntohl(caller.flags) & KAFADMIN);
1597 if (strcmp(caller.userID.name, aname) != 0 && !callerIsAdmin) {
1603 code = FindBlock(tt, aname, ainstance, &to, &tentry);
1606 if (to == 0) { /* entry not found */
1611 get_time(0, 0, 0); /* generate random update */
1613 memset(aentry, 0, sizeof(*aentry));
1614 aentry->minor_version = KAMINORVERSION;
1615 aentry->flags = ntohl(tentry.flags);
1616 aentry->user_expiration = ntohl(tentry.user_expiration);
1617 aentry->modification_time = ntohl(tentry.modification_time);
1618 aentry->change_password_time = ntohl(tentry.change_password_time);
1619 aentry->max_ticket_lifetime = ntohl(tentry.max_ticket_lifetime);
1620 aentry->key_version = ntohl(tentry.key_version);
1622 temp = (unsigned char)tentry.misc_auth_bytes[LOCKTIME];
1624 if (kaux_islocked(to, (u_int) tentry.misc_auth_bytes[ATTEMPTS], temp))
1625 tentry.misc_auth_bytes[REUSEFLAGS] |= KA_ISLOCKED; /* saves an RPC */
1627 temp = pack_long(tentry.misc_auth_bytes);
1628 aentry->misc_auth_bytes = temp;
1630 * only return user's key if security disabled or if admin and
1631 * we have an encrypted connection to the user
1633 rxkad_GetServerInfo(call->conn, &enc_level, 0, 0, 0, 0, 0);
1634 if ((noAuthenticationRequired)
1635 || (callerIsAdmin && enc_level == rxkad_crypt))
1636 memcpy(&aentry->key, &tentry.key, sizeof(struct ktc_encryptionKey));
1638 memset(&aentry->key, 0, sizeof(aentry->key));
1639 code = ka_KeyCheckSum((char *)&tentry.key, &aentry->keyCheckSum);
1640 if (!tentry.pwsums[0] && npwSums > 1 && !tentry.pwsums[1]) {
1641 aentry->reserved3 = 0x12340000;
1643 aentry->reserved3 = 0x12340001;
1646 /* Now get entry of user who last modified this entry */
1647 if (ntohl(tentry.modification_id)) {
1648 temp = ntohl(tentry.modification_id);
1649 code = karead(tt, temp, (char *)&tentry, sizeof(tentry));
1654 aentry->modification_user = tentry.userID;
1656 strcpy(aentry->modification_user.name, "<none>");
1657 strcpy(aentry->modification_user.instance, "\0");
1659 code = ubik_EndTrans(tt);
1664 ubik_AbortTrans(tt);
1669 SKAM_ListEntry(struct rx_call *call,
1670 afs_int32 previous_index, /* last entry ret'd or 0 for first */
1671 afs_int32 *index, /* index of this entry */
1672 afs_int32 *count, /* total entries in database */
1673 kaident *name) /* name & instance of this entry */
1677 code = kamListEntry(call, previous_index, index, count, name);
1678 osi_auditU(call, AFS_KAM_LstEntEvent, code, AUD_LONG, *index, AUD_END);
1684 kamListEntry(struct rx_call *call,
1685 afs_int32 previous_index, /* last entry ret'd or 0 for first */
1686 afs_int32 *index, /* index of this entry */
1687 afs_int32 *count, /* total entries in database */
1688 kaident *name) /* name & instance of this entry */
1691 struct ubik_trans *tt;
1693 struct kaentry tentry;
1695 COUNT_REQ(ListEntry);
1696 if ((code = InitAuthServ(&tt, LOCKREAD, this_op)))
1698 code = check_auth(call, tt, 1, &caller);
1703 *index = NextBlock(tt, previous_index, &tentry, count);
1709 if (*index) { /* return name & inst of this entry */
1710 strncpy(name->name, tentry.userID.name, sizeof(name->name));
1711 strncpy(name->instance, tentry.userID.instance,
1712 sizeof(name->instance));
1714 strcpy(name->name, "\0");
1715 strcpy(name->instance, "\0");
1717 code = ubik_EndTrans(tt);
1722 ubik_AbortTrans(tt);
1727 GetTicket(int version,
1728 struct rx_call *call,
1734 ka_CBS *atimes, /* encrypted start & end time */
1739 struct ubik_trans *tt;
1740 struct ktc_encryptionKey tgskey;
1741 DES_key_schedule schedule;
1743 char name[MAXKTCNAMELEN];
1744 char instance[MAXKTCNAMELEN];
1745 char cell[MAXKTCNAMELEN];
1747 struct kaentry caller;
1748 struct kaentry server;
1749 struct ktc_encryptionKey authSessionKey;
1750 struct ktc_encryptionKey sessionKey;
1752 char ticket[MAXKTCTICKETLEN];
1758 struct ka_getTicketTimes times;
1759 struct ka_getTicketAnswer *answer;
1761 COUNT_REQ(GetTicket);
1762 if (!name_instance_legal(sname, sinstance))
1764 if (atimes->SeqLen != sizeof(times))
1765 return KABADARGUMENT;
1766 if ((code = InitAuthServ(&tt, LOCKREAD, this_op)))
1769 export = import = 0;
1770 if ((strcmp(sname, KA_TGS_NAME) == 0) && (strcmp(sinstance, lrealm) != 0))
1772 if ((strlen(authDomain) > 0) && (strcmp(authDomain, lrealm) != 0))
1775 if (strlen(authDomain) == 0)
1776 authDomain = lrealm;
1777 code = ka_LookupKvno(tt, KA_TGS_NAME, authDomain, kvno, &tgskey);
1782 tkt_DecodeTicket(aticket->SeqBody, aticket->SeqLen, &tgskey, name,
1783 instance, cell, &authSessionKey, &host, &start,
1789 save_principal(tgsPrincipal, name, instance, cell);
1791 if ((code = get_time(&now, 0, 0)))
1794 code = tkt_CheckTimes(start, expiration, now);
1797 code = RXKADEXPIRED;
1802 code = DES_key_sched(ktc_to_cblock(&authSessionKey), &schedule);
1807 celllen = strlen(cell);
1808 if (import && (celllen == 0)) {
1812 if (export && (celllen == 0))
1813 strcpy(cell, lrealm);
1815 if (!krb4_cross && celllen && strcmp(lrealm, cell) != 0) {
1820 DES_ecb_encrypt((DES_cblock *)atimes->SeqBody, (DES_cblock *)×, &schedule, DECRYPT);
1821 times.start = ntohl(times.start);
1822 times.end = ntohl(times.end);
1823 code = tkt_CheckTimes(times.start, times.end, now);
1825 code = KABADREQUEST;
1830 strcpy(caller.userID.name, name);
1831 strcpy(caller.userID.instance, instance);
1832 caller.max_ticket_lifetime = htonl(MAXKTCTICKETLIFETIME);
1833 caller.flags = htonl(KAFNORMAL);
1834 caller.user_expiration = htonl(NEVERDATE);
1836 code = FindBlock(tt, name, instance, &to, &caller);
1840 ka_PrintUserID("GetTicket: User ", name, instance, " unknown.\n");
1846 /* get server's entry */
1847 code = FindBlock(tt, sname, sinstance, &to, &server);
1850 if (to == 0) { /* entry not found */
1851 ka_PrintUserID("GetTicket: Server ", sname, sinstance, " unknown.\n");
1855 save_principal(tgsServerPrincipal, sname, sinstance, 0);
1857 code = DES_new_random_key(ktc_to_cblock(&sessionKey));
1864 GetEndTime(times.start, times.end, expiration, &caller, &server,
1870 tkt_MakeTicket(ticket, &ticketLen, &server.key, caller.userID.name,
1871 caller.userID.instance, cell, times.start, end,
1873 rx_HostOf(rx_PeerOf(rx_ConnectionOf(call))),
1874 server.userID.name, server.userID.instance);
1880 code = KAANSWERTOOLONG;
1881 if (oanswer->MaxSeqLen <
1882 sizeof(struct ka_getTicketAnswer) - 5 * MAXKTCNAMELEN -
1883 MAXKTCTICKETLEN + ticketLen)
1886 answer = (struct ka_getTicketAnswer *)oanswer->SeqBody;
1887 memcpy(&answer->sessionKey, &sessionKey,
1888 sizeof(struct ktc_encryptionKey));
1889 answer->startTime = htonl(times.start);
1890 answer->endTime = htonl(end);
1891 answer->kvno = server.key_version;
1892 answer->ticketLen = htonl(ticketLen);
1895 char *ans = answer->name; /* ptr to variable part of answer */
1898 /* space remaining */
1899 rem = oanswer->MaxSeqLen - (ans - oanswer->SeqBody);
1901 #define putstr(str) len = strlen (str)+1;\
1902 if (rem < len) goto abort;\
1904 ans += len; rem -= len
1911 if (rem < ticketLen)
1913 memcpy(ans, ticket, ticketLen);
1914 oanswer->SeqLen = (ans - oanswer->SeqBody) + ticketLen;
1916 oanswer->SeqLen = round_up_to_ebs(oanswer->SeqLen);
1920 PrepareTicketAnswer(oanswer, /*challenge */ 0, ticket, ticketLen,
1921 &sessionKey, times.start, end, &caller,
1922 &server, cell, KA_GETTICKET_ANS_LABEL);
1927 code = KAINTERNALERROR;
1930 DES_pcbc_encrypt(oanswer->SeqBody, oanswer->SeqBody, oanswer->SeqLen,
1931 &schedule, ktc_to_cblockptr(&authSessionKey), ENCRYPT);
1932 code = ubik_EndTrans(tt);
1933 KALOG(name, instance, sname, sinstance, (import ? authDomain : NULL),
1934 call->conn->peer->host, LOG_GETTICKET);
1939 ubik_AbortTrans(tt);
1944 SKAT_GetTicket_old(struct rx_call *call,
1950 ka_CBS *atimes, /* encrypted start & end time */
1955 sleep(1); /* strongly discourage this */
1957 GetTicket(0, call, kvno, authDomain, aticket, sname, sinstance,
1960 osi_auditU(call, AFS_KAT_GetTicketOEvent, code, AUD_STR, sname, AUD_STR,
1961 sinstance, AUD_END);
1966 SKAT_GetTicket(struct rx_call *call,
1972 ka_CBS *atimes, /* encrypted start & end time */
1978 GetTicket(1, call, kvno, authDomain, aticket, sname, sinstance,
1980 osi_auditU(call, AFS_KAT_GetTicketEvent, code, AUD_STR, sname, AUD_STR,
1981 sinstance, AUD_END);
1986 SKAM_GetStats(struct rx_call *call, afs_int32 version,
1987 afs_int32 *admin_accounts, kasstats *statics,
1992 code = kamGetStats(call, version, admin_accounts, statics, dynamics);
1993 osi_auditU(call, AFS_KAM_GetStatEvent, code, AUD_END);
1998 kamGetStats(struct rx_call *call, afs_int32 version,
1999 afs_int32 *admin_accounts, kasstats *statics,
2003 struct ubik_trans *tt;
2006 COUNT_REQ(GetStats);
2007 if (version != KAMAJORVERSION)
2008 return KAOLDINTERFACE;
2009 if ((code = InitAuthServ(&tt, LOCKREAD, this_op)))
2011 code = check_auth(call, tt, 1, &caller);
2014 ubik_AbortTrans(tt);
2018 *admin_accounts = ntohl(cheader.admin_accounts);
2019 /* memcpy((char *)statics, (char *)&cheader.stats, sizeof(kasstats)); */
2020 /* these are stored in network byte order and must be copied */
2021 statics->allocs = ntohl(cheader.stats.allocs);
2022 statics->frees = ntohl(cheader.stats.frees);
2023 statics->cpws = ntohl(cheader.stats.cpws);
2024 #if KADBVERSION != 5
2025 check that the statistics command copies all the fields
2027 memcpy((char *)dynamics, (char *)&dynamic_statistics, sizeof(kadstats));
2028 statics->minor_version = KAMINORVERSION;
2029 dynamics->minor_version = KAMINORVERSION;
2035 for (i = 0; i < HASHSIZE; i++)
2036 if (cheader.nameHash[i])
2038 dynamics->hashTableUtilization =
2039 (used * 10000 + HASHSIZE / 2) / HASHSIZE;
2042 #if !defined(AFS_AIX_ENV) && !defined(AFS_HPUX_ENV) && !defined(AFS_NT40_ENV)
2044 /* Unfortunately, although aix_22 has a minimal compatibility
2045 * method of getting to some rusage fields (i.e. stime &
2046 * utime), the version that we have doesn't even have the
2047 * related include files needed for the aix vtimes() call; so
2048 * ignore this for aix till v3.1... */
2049 getrusage(RUSAGE_SELF, &ru);
2050 #if (KAMAJORVERSION>5)
2051 memcpy(&dynamics->utime, &ru.ru_utime, sizeof(struct katimeval));
2052 memcpy(&dynamics->stime, &ru.ru_stime, sizeof(struct katimeval));
2053 dynamics->dataSize = ru.ru_idrss;
2054 dynamics->stackSize = ru.ru_isrss;
2055 dynamics->pageFailts = ru.ru_majflt;
2057 dynamics->string_checks =
2058 (afs_int32) (1000.0 *
2059 ((ru.ru_utime.tv_sec +
2060 ru.ru_utime.tv_usec / 1000000.0) +
2061 (ru.ru_stime.tv_sec +
2062 ru.ru_stime.tv_usec / 1000000.0)));
2064 #endif /* AFS_AIX_ENV && AFS_HPUX_ENV && AFS_NT40_ENV */
2067 code = ubik_EndTrans(tt);
2072 SKAM_GetPassword(struct rx_call *call, char *name, EncryptionKey *password)
2076 code = kamGetPassword(call, name, password);
2077 osi_auditU(call, AFS_KAM_GetPswdEvent, code, AUD_STR, name, AUD_END);
2082 kamGetPassword(struct rx_call *call, char *name, EncryptionKey *password)
2084 int code = KANOAUTH;
2085 AFS_UNUSED COUNT_REQ(GetPassword);
2089 struct ubik_trans *tt;
2090 struct kaentry tentry;
2092 if (!name_instance_legal(name, ""))
2094 /* only requests from this host work */
2095 if (rx_HostOf(rx_PeerOf(rx_ConnectionOf(call))) !=
2096 htonl(INADDR_LOOPBACK))
2098 if (code = InitAuthServ(&tt, LOCKREAD, this_op))
2101 /* this isn't likely to be used because of string to key problems, so since
2102 * this is a temporary thing anyway, we'll use it here. */
2104 extern char udpAuthPrincipal[256];
2106 save_principal(udpAuthPrincipal, name, 0, 0);
2109 get_time(0, 0, 0); /* update random value */
2110 code = FindBlock(tt, name, "", &to, &tentry);
2117 ubik_AbortTrans(tt);
2121 memcpy(password, &tentry.key, sizeof(*password));
2122 code = ubik_EndTrans(tt);
2129 SKAM_GetRandomKey(struct rx_call *call, EncryptionKey *key)
2133 code = kamGetRandomKey(call, key);
2134 osi_auditU(call, AFS_KAM_GetRndKeyEvent, code, AUD_END);
2139 kamGetRandomKey(struct rx_call *call, EncryptionKey *key)
2143 AFS_UNUSED COUNT_REQ(GetRandomKey);
2144 if ((code = AwaitInitialization()))
2146 code = DES_new_random_key(EncryptionKey_to_cblock(key));
2153 SKAM_Debug(struct rx_call *call,
2155 int checkDB, /* start a transaction to examine DB */
2156 struct ka_debugInfo *info)
2160 code = kamDebug(call, version, checkDB, info);
2161 osi_auditU(call, AFS_KAM_DbgEvent, code, AUD_END);
2166 kamDebug(struct rx_call *call,
2168 int checkDB, /* start a transaction to examine DB */
2169 struct ka_debugInfo *info)
2171 /* COUNT_REQ (Debug); */
2172 if (sizeof(struct kaentry) != sizeof(struct kaOldKeys))
2173 return KAINTERNALERROR;
2174 if (sizeof(struct ka_cpwRequest) % 8)
2175 return KAINTERNALERROR;
2176 if (version != KAMAJORVERSION)
2177 return KAOLDINTERFACE;
2179 memset(info, 0, sizeof(*info));
2181 info->minorVersion = KAMINORVERSION;
2182 info->host = dynamic_statistics.host;
2183 info->startTime = dynamic_statistics.start_time;
2185 #if (KAMAJORVERSION>5)
2191 info->noAuth = noAuthenticationRequired;
2193 info->dbVersion = ntohl(cheader.version);
2194 info->dbFreePtr = ntohl(cheader.freePtr);
2195 info->dbEofPtr = ntohl(cheader.eofPtr);
2196 info->dbKvnoPtr = ntohl(cheader.kvnoPtr);
2197 info->dbSpecialKeysVersion = ntohl(cheader.specialKeysVersion);
2199 info->dbHeaderRead = cheaderReadTime;
2200 info->lastTrans = lastTrans;
2202 lastOperation = "(Not Available)";
2203 strncpy(info->lastOperation, lastOperation, sizeof(info->lastOperation));
2204 strncpy(info->lastAuth, authPrincipal, sizeof(info->lastAuth));
2205 strncpy(info->lastTGS, tgsPrincipal, sizeof(info->lastTGS));
2206 strncpy(info->lastAdmin, adminPrincipal, sizeof(info->lastAdmin));
2207 strncpy(info->lastTGSServer, tgsServerPrincipal,
2208 sizeof(info->lastTGSServer));
2210 extern char udpAuthPrincipal[256];
2211 extern char udptgsPrincipal[256];
2212 extern char udptgsServerPrincipal[256];
2214 strncpy(info->lastUAuth, udpAuthPrincipal, sizeof(info->lastUAuth));
2215 strncpy(info->lastUTGS, udptgsPrincipal, sizeof(info->lastUTGS));
2216 strncpy(info->lastUTGSServer, udptgsServerPrincipal,
2217 sizeof(info->lastUTGSServer));
2219 info->nextAutoCPW = nextAutoCPWTime;
2220 info->updatesRemaining = autoCPWUpdates - totalUpdates;
2221 ka_debugKeyCache(info);
2225 /* these are auxiliary routines. They don't do any Ubik stuff. They use
2226 * a tacked-on-the-side data file.
2227 * prob'ly ought to check the noauth flag.
2229 #define ABORTIF(A) {if((code = A)){goto abort;}}
2231 SKAM_Unlock(struct rx_call *call,
2240 struct ubik_trans *tt;
2243 struct kaentry tentry;
2246 if (!name_instance_legal(aname, ainstance)) {
2250 if ((code = InitAuthServ(&tt, LOCKREAD, this_op)))
2253 ABORTIF(check_auth(call, tt, 1, &caller));
2254 ABORTIF(FindBlock(tt, aname, ainstance, &to, &tentry));
2255 ABORTIF((to == 0 ? KANOENT : 0));
2257 kaux_write(to, 0, 0); /* zero failure counters at this offset */
2259 code = ubik_EndTrans(tt);
2260 KALOG(aname, ainstance, NULL, NULL, NULL, call->conn->peer->host,
2266 ubik_AbortTrans(tt);
2269 osi_auditU(call, UnlockEvent, code, AUD_STR, aname, AUD_STR, ainstance,
2275 SKAM_LockStatus(struct rx_call *call,
2278 afs_int32 *lockeduntil,
2285 struct ubik_trans *tt;
2286 afs_int32 callerIndex;
2288 struct kaentry caller;
2289 struct kaentry tentry;
2292 COUNT_REQ(LockStatus);
2294 if (!name_instance_legal(aname, ainstance)) {
2298 if ((code = InitAuthServ(&tt, LOCKREAD, this_op)))
2301 if ((code = check_auth(call, tt, 0, &callerIndex)))
2304 if (!noAuthenticationRequired && callerIndex) {
2305 if (karead(tt, callerIndex, (char *)&caller, sizeof(caller))) {
2309 /* if the user is checking his own entry or ADMIN then go ahead. */
2310 if ((strcmp(caller.userID.name, aname) != 0)
2311 && !(ntohl(caller.flags) & KAFADMIN)) {
2317 if ((code = FindBlock(tt, aname, ainstance, &to, &tentry)))
2325 temp = (unsigned char)tentry.misc_auth_bytes[LOCKTIME];
2328 kaux_islocked(to, (u_int) tentry.misc_auth_bytes[ATTEMPTS], temp);
2330 code = ubik_EndTrans(tt);
2335 ubik_AbortTrans(tt);
2336 osi_auditU(call, LockStatusEvent, code, AUD_STR, aname, AUD_STR,
2337 ainstance, AUD_END);